1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * This is the new netlink-based wireless configuration interface. 4 * 5 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 6 * Copyright 2013-2014 Intel Mobile Communications GmbH 7 * Copyright 2015-2017 Intel Deutschland GmbH 8 * Copyright (C) 2018-2020 Intel Corporation 9 */ 10 11 #include <linux/if.h> 12 #include <linux/module.h> 13 #include <linux/err.h> 14 #include <linux/slab.h> 15 #include <linux/list.h> 16 #include <linux/if_ether.h> 17 #include <linux/ieee80211.h> 18 #include <linux/nl80211.h> 19 #include <linux/rtnetlink.h> 20 #include <linux/netlink.h> 21 #include <linux/nospec.h> 22 #include <linux/etherdevice.h> 23 #include <linux/if_vlan.h> 24 #include <net/net_namespace.h> 25 #include <net/genetlink.h> 26 #include <net/cfg80211.h> 27 #include <net/sock.h> 28 #include <net/inet_connection_sock.h> 29 #include "core.h" 30 #include "nl80211.h" 31 #include "reg.h" 32 #include "rdev-ops.h" 33 34 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 35 struct genl_info *info, 36 struct cfg80211_crypto_settings *settings, 37 int cipher_limit); 38 39 /* the netlink family */ 40 static struct genl_family nl80211_fam; 41 42 /* multicast groups */ 43 enum nl80211_multicast_groups { 44 NL80211_MCGRP_CONFIG, 45 NL80211_MCGRP_SCAN, 46 NL80211_MCGRP_REGULATORY, 47 NL80211_MCGRP_MLME, 48 NL80211_MCGRP_VENDOR, 49 NL80211_MCGRP_NAN, 50 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 51 }; 52 53 static const struct genl_multicast_group nl80211_mcgrps[] = { 54 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 55 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 56 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 57 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 58 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 59 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, 60 #ifdef CONFIG_NL80211_TESTMODE 61 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 62 #endif 63 }; 64 65 /* returns ERR_PTR values */ 66 static struct wireless_dev * 67 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 68 { 69 struct cfg80211_registered_device *rdev; 70 struct wireless_dev *result = NULL; 71 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 72 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 73 u64 wdev_id; 74 int wiphy_idx = -1; 75 int ifidx = -1; 76 77 ASSERT_RTNL(); 78 79 if (!have_ifidx && !have_wdev_id) 80 return ERR_PTR(-EINVAL); 81 82 if (have_ifidx) 83 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 84 if (have_wdev_id) { 85 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 86 wiphy_idx = wdev_id >> 32; 87 } 88 89 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 90 struct wireless_dev *wdev; 91 92 if (wiphy_net(&rdev->wiphy) != netns) 93 continue; 94 95 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 96 continue; 97 98 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 99 if (have_ifidx && wdev->netdev && 100 wdev->netdev->ifindex == ifidx) { 101 result = wdev; 102 break; 103 } 104 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 105 result = wdev; 106 break; 107 } 108 } 109 110 if (result) 111 break; 112 } 113 114 if (result) 115 return result; 116 return ERR_PTR(-ENODEV); 117 } 118 119 static struct cfg80211_registered_device * 120 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 121 { 122 struct cfg80211_registered_device *rdev = NULL, *tmp; 123 struct net_device *netdev; 124 125 ASSERT_RTNL(); 126 127 if (!attrs[NL80211_ATTR_WIPHY] && 128 !attrs[NL80211_ATTR_IFINDEX] && 129 !attrs[NL80211_ATTR_WDEV]) 130 return ERR_PTR(-EINVAL); 131 132 if (attrs[NL80211_ATTR_WIPHY]) 133 rdev = cfg80211_rdev_by_wiphy_idx( 134 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 135 136 if (attrs[NL80211_ATTR_WDEV]) { 137 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 138 struct wireless_dev *wdev; 139 bool found = false; 140 141 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 142 if (tmp) { 143 /* make sure wdev exists */ 144 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 145 if (wdev->identifier != (u32)wdev_id) 146 continue; 147 found = true; 148 break; 149 } 150 151 if (!found) 152 tmp = NULL; 153 154 if (rdev && tmp != rdev) 155 return ERR_PTR(-EINVAL); 156 rdev = tmp; 157 } 158 } 159 160 if (attrs[NL80211_ATTR_IFINDEX]) { 161 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 162 163 netdev = __dev_get_by_index(netns, ifindex); 164 if (netdev) { 165 if (netdev->ieee80211_ptr) 166 tmp = wiphy_to_rdev( 167 netdev->ieee80211_ptr->wiphy); 168 else 169 tmp = NULL; 170 171 /* not wireless device -- return error */ 172 if (!tmp) 173 return ERR_PTR(-EINVAL); 174 175 /* mismatch -- return error */ 176 if (rdev && tmp != rdev) 177 return ERR_PTR(-EINVAL); 178 179 rdev = tmp; 180 } 181 } 182 183 if (!rdev) 184 return ERR_PTR(-ENODEV); 185 186 if (netns != wiphy_net(&rdev->wiphy)) 187 return ERR_PTR(-ENODEV); 188 189 return rdev; 190 } 191 192 /* 193 * This function returns a pointer to the driver 194 * that the genl_info item that is passed refers to. 195 * 196 * The result of this can be a PTR_ERR and hence must 197 * be checked with IS_ERR() for errors. 198 */ 199 static struct cfg80211_registered_device * 200 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 201 { 202 return __cfg80211_rdev_from_attrs(netns, info->attrs); 203 } 204 205 static int validate_beacon_head(const struct nlattr *attr, 206 struct netlink_ext_ack *extack) 207 { 208 const u8 *data = nla_data(attr); 209 unsigned int len = nla_len(attr); 210 const struct element *elem; 211 const struct ieee80211_mgmt *mgmt = (void *)data; 212 bool s1g_bcn = ieee80211_is_s1g_beacon(mgmt->frame_control); 213 unsigned int fixedlen, hdrlen; 214 215 if (s1g_bcn) { 216 fixedlen = offsetof(struct ieee80211_ext, 217 u.s1g_beacon.variable); 218 hdrlen = offsetof(struct ieee80211_ext, u.s1g_beacon); 219 } else { 220 fixedlen = offsetof(struct ieee80211_mgmt, 221 u.beacon.variable); 222 hdrlen = offsetof(struct ieee80211_mgmt, u.beacon); 223 } 224 225 if (len < fixedlen) 226 goto err; 227 228 if (ieee80211_hdrlen(mgmt->frame_control) != hdrlen) 229 goto err; 230 231 data += fixedlen; 232 len -= fixedlen; 233 234 for_each_element(elem, data, len) { 235 /* nothing */ 236 } 237 238 if (for_each_element_completed(elem, data, len)) 239 return 0; 240 241 err: 242 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed beacon head"); 243 return -EINVAL; 244 } 245 246 static int validate_ie_attr(const struct nlattr *attr, 247 struct netlink_ext_ack *extack) 248 { 249 const u8 *data = nla_data(attr); 250 unsigned int len = nla_len(attr); 251 const struct element *elem; 252 253 for_each_element(elem, data, len) { 254 /* nothing */ 255 } 256 257 if (for_each_element_completed(elem, data, len)) 258 return 0; 259 260 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements"); 261 return -EINVAL; 262 } 263 264 /* policy for the attributes */ 265 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR]; 266 267 static const struct nla_policy 268 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = { 269 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, }, 270 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY, 271 .len = U8_MAX }, 272 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY, 273 .len = U8_MAX }, 274 }; 275 276 static const struct nla_policy 277 nl80211_pmsr_ftm_req_attr_policy[NL80211_PMSR_FTM_REQ_ATTR_MAX + 1] = { 278 [NL80211_PMSR_FTM_REQ_ATTR_ASAP] = { .type = NLA_FLAG }, 279 [NL80211_PMSR_FTM_REQ_ATTR_PREAMBLE] = { .type = NLA_U32 }, 280 [NL80211_PMSR_FTM_REQ_ATTR_NUM_BURSTS_EXP] = 281 NLA_POLICY_MAX(NLA_U8, 15), 282 [NL80211_PMSR_FTM_REQ_ATTR_BURST_PERIOD] = { .type = NLA_U16 }, 283 [NL80211_PMSR_FTM_REQ_ATTR_BURST_DURATION] = 284 NLA_POLICY_MAX(NLA_U8, 15), 285 [NL80211_PMSR_FTM_REQ_ATTR_FTMS_PER_BURST] = 286 NLA_POLICY_MAX(NLA_U8, 31), 287 [NL80211_PMSR_FTM_REQ_ATTR_NUM_FTMR_RETRIES] = { .type = NLA_U8 }, 288 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_LCI] = { .type = NLA_FLAG }, 289 [NL80211_PMSR_FTM_REQ_ATTR_REQUEST_CIVICLOC] = { .type = NLA_FLAG }, 290 [NL80211_PMSR_FTM_REQ_ATTR_TRIGGER_BASED] = { .type = NLA_FLAG }, 291 [NL80211_PMSR_FTM_REQ_ATTR_NON_TRIGGER_BASED] = { .type = NLA_FLAG }, 292 }; 293 294 static const struct nla_policy 295 nl80211_pmsr_req_data_policy[NL80211_PMSR_TYPE_MAX + 1] = { 296 [NL80211_PMSR_TYPE_FTM] = 297 NLA_POLICY_NESTED(nl80211_pmsr_ftm_req_attr_policy), 298 }; 299 300 static const struct nla_policy 301 nl80211_pmsr_req_attr_policy[NL80211_PMSR_REQ_ATTR_MAX + 1] = { 302 [NL80211_PMSR_REQ_ATTR_DATA] = 303 NLA_POLICY_NESTED(nl80211_pmsr_req_data_policy), 304 [NL80211_PMSR_REQ_ATTR_GET_AP_TSF] = { .type = NLA_FLAG }, 305 }; 306 307 static const struct nla_policy 308 nl80211_psmr_peer_attr_policy[NL80211_PMSR_PEER_ATTR_MAX + 1] = { 309 [NL80211_PMSR_PEER_ATTR_ADDR] = NLA_POLICY_ETH_ADDR, 310 [NL80211_PMSR_PEER_ATTR_CHAN] = NLA_POLICY_NESTED(nl80211_policy), 311 [NL80211_PMSR_PEER_ATTR_REQ] = 312 NLA_POLICY_NESTED(nl80211_pmsr_req_attr_policy), 313 [NL80211_PMSR_PEER_ATTR_RESP] = { .type = NLA_REJECT }, 314 }; 315 316 static const struct nla_policy 317 nl80211_pmsr_attr_policy[NL80211_PMSR_ATTR_MAX + 1] = { 318 [NL80211_PMSR_ATTR_MAX_PEERS] = { .type = NLA_REJECT }, 319 [NL80211_PMSR_ATTR_REPORT_AP_TSF] = { .type = NLA_REJECT }, 320 [NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR] = { .type = NLA_REJECT }, 321 [NL80211_PMSR_ATTR_TYPE_CAPA] = { .type = NLA_REJECT }, 322 [NL80211_PMSR_ATTR_PEERS] = 323 NLA_POLICY_NESTED_ARRAY(nl80211_psmr_peer_attr_policy), 324 }; 325 326 static const struct nla_policy 327 he_obss_pd_policy[NL80211_HE_OBSS_PD_ATTR_MAX + 1] = { 328 [NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET] = 329 NLA_POLICY_RANGE(NLA_U8, 1, 20), 330 [NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET] = 331 NLA_POLICY_RANGE(NLA_U8, 1, 20), 332 [NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET] = 333 NLA_POLICY_RANGE(NLA_U8, 1, 20), 334 [NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP] = 335 NLA_POLICY_EXACT_LEN(8), 336 [NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP] = 337 NLA_POLICY_EXACT_LEN(8), 338 [NL80211_HE_OBSS_PD_ATTR_SR_CTRL] = { .type = NLA_U8 }, 339 }; 340 341 static const struct nla_policy 342 he_bss_color_policy[NL80211_HE_BSS_COLOR_ATTR_MAX + 1] = { 343 [NL80211_HE_BSS_COLOR_ATTR_COLOR] = NLA_POLICY_RANGE(NLA_U8, 1, 63), 344 [NL80211_HE_BSS_COLOR_ATTR_DISABLED] = { .type = NLA_FLAG }, 345 [NL80211_HE_BSS_COLOR_ATTR_PARTIAL] = { .type = NLA_FLAG }, 346 }; 347 348 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 349 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 350 .len = NL80211_MAX_SUPP_RATES }, 351 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 352 .len = NL80211_MAX_SUPP_HT_RATES }, 353 [NL80211_TXRATE_VHT] = NLA_POLICY_EXACT_LEN_WARN(sizeof(struct nl80211_txrate_vht)), 354 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 355 [NL80211_TXRATE_HE] = NLA_POLICY_EXACT_LEN(sizeof(struct nl80211_txrate_he)), 356 [NL80211_TXRATE_HE_GI] = NLA_POLICY_RANGE(NLA_U8, 357 NL80211_RATE_INFO_HE_GI_0_8, 358 NL80211_RATE_INFO_HE_GI_3_2), 359 [NL80211_TXRATE_HE_LTF] = NLA_POLICY_RANGE(NLA_U8, 360 NL80211_RATE_INFO_HE_1XLTF, 361 NL80211_RATE_INFO_HE_4XLTF), 362 }; 363 364 static const struct nla_policy 365 nl80211_tid_config_attr_policy[NL80211_TID_CONFIG_ATTR_MAX + 1] = { 366 [NL80211_TID_CONFIG_ATTR_VIF_SUPP] = { .type = NLA_U64 }, 367 [NL80211_TID_CONFIG_ATTR_PEER_SUPP] = { .type = NLA_U64 }, 368 [NL80211_TID_CONFIG_ATTR_OVERRIDE] = { .type = NLA_FLAG }, 369 [NL80211_TID_CONFIG_ATTR_TIDS] = NLA_POLICY_RANGE(NLA_U16, 1, 0xff), 370 [NL80211_TID_CONFIG_ATTR_NOACK] = 371 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 372 [NL80211_TID_CONFIG_ATTR_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1), 373 [NL80211_TID_CONFIG_ATTR_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1), 374 [NL80211_TID_CONFIG_ATTR_AMPDU_CTRL] = 375 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 376 [NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL] = 377 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 378 [NL80211_TID_CONFIG_ATTR_AMSDU_CTRL] = 379 NLA_POLICY_MAX(NLA_U8, NL80211_TID_CONFIG_DISABLE), 380 [NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE] = 381 NLA_POLICY_MAX(NLA_U8, NL80211_TX_RATE_FIXED), 382 [NL80211_TID_CONFIG_ATTR_TX_RATE] = 383 NLA_POLICY_NESTED(nl80211_txattr_policy), 384 }; 385 386 static const struct nla_policy 387 nl80211_fils_discovery_policy[NL80211_FILS_DISCOVERY_ATTR_MAX + 1] = { 388 [NL80211_FILS_DISCOVERY_ATTR_INT_MIN] = NLA_POLICY_MAX(NLA_U32, 10000), 389 [NL80211_FILS_DISCOVERY_ATTR_INT_MAX] = NLA_POLICY_MAX(NLA_U32, 10000), 390 NLA_POLICY_RANGE(NLA_BINARY, 391 NL80211_FILS_DISCOVERY_TMPL_MIN_LEN, 392 IEEE80211_MAX_DATA_LEN), 393 }; 394 395 static const struct nla_policy 396 nl80211_unsol_bcast_probe_resp_policy[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1] = { 397 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] = NLA_POLICY_MAX(NLA_U32, 20), 398 [NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL] = { .type = NLA_BINARY, 399 .len = IEEE80211_MAX_DATA_LEN } 400 }; 401 402 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 403 [0] = { .strict_start_type = NL80211_ATTR_HE_OBSS_PD }, 404 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 405 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 406 .len = 20-1 }, 407 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 408 409 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 410 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 411 [NL80211_ATTR_WIPHY_EDMG_CHANNELS] = NLA_POLICY_RANGE(NLA_U8, 412 NL80211_EDMG_CHANNELS_MIN, 413 NL80211_EDMG_CHANNELS_MAX), 414 [NL80211_ATTR_WIPHY_EDMG_BW_CONFIG] = NLA_POLICY_RANGE(NLA_U8, 415 NL80211_EDMG_BW_CONFIG_MIN, 416 NL80211_EDMG_BW_CONFIG_MAX), 417 418 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 419 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 420 [NL80211_ATTR_CENTER_FREQ1_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999), 421 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 422 423 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1), 424 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1), 425 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 426 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 427 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 428 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 429 430 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX), 431 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 432 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 433 434 [NL80211_ATTR_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 435 [NL80211_ATTR_PREV_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 436 437 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 438 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 439 .len = WLAN_MAX_KEY_LEN }, 440 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 7), 441 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 442 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 443 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 444 [NL80211_ATTR_KEY_TYPE] = 445 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES), 446 447 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 448 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 449 [NL80211_ATTR_BEACON_HEAD] = 450 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_beacon_head, 451 IEEE80211_MAX_DATA_LEN), 452 [NL80211_ATTR_BEACON_TAIL] = 453 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 454 IEEE80211_MAX_DATA_LEN), 455 [NL80211_ATTR_STA_AID] = 456 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 457 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 458 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 459 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 460 .len = NL80211_MAX_SUPP_RATES }, 461 [NL80211_ATTR_STA_PLINK_ACTION] = 462 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1), 463 [NL80211_ATTR_STA_TX_POWER_SETTING] = 464 NLA_POLICY_RANGE(NLA_U8, 465 NL80211_TX_POWER_AUTOMATIC, 466 NL80211_TX_POWER_FIXED), 467 [NL80211_ATTR_STA_TX_POWER] = { .type = NLA_S16 }, 468 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 469 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 470 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 471 .len = IEEE80211_MAX_MESH_ID_LEN }, 472 [NL80211_ATTR_MPATH_NEXT_HOP] = NLA_POLICY_ETH_ADDR_COMPAT, 473 474 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 475 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 476 477 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 478 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 479 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 480 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 481 .len = NL80211_MAX_SUPP_RATES }, 482 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 483 484 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 485 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 486 487 [NL80211_ATTR_HT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_HT_CAPABILITY_LEN), 488 489 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 490 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, 491 validate_ie_attr, 492 IEEE80211_MAX_DATA_LEN), 493 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 494 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 495 496 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 497 .len = IEEE80211_MAX_SSID_LEN }, 498 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 499 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 500 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 501 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 502 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32, 503 NL80211_MFP_NO, 504 NL80211_MFP_OPTIONAL), 505 [NL80211_ATTR_STA_FLAGS2] = { 506 .len = sizeof(struct nl80211_sta_flag_update), 507 }, 508 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 509 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 510 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 511 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG }, 512 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 513 [NL80211_ATTR_STATUS_CODE] = { .type = NLA_U16 }, 514 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 515 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 516 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 517 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 518 [NL80211_ATTR_PMKID] = NLA_POLICY_EXACT_LEN_WARN(WLAN_PMKID_LEN), 519 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 520 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 521 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 522 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 523 .len = IEEE80211_MAX_DATA_LEN }, 524 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 525 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32, 526 NL80211_PS_DISABLED, 527 NL80211_PS_ENABLED), 528 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 529 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 530 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 531 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 532 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 533 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 534 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 535 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 536 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 537 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 538 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 539 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 540 [NL80211_ATTR_STA_PLINK_STATE] = 541 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1), 542 [NL80211_ATTR_MEASUREMENT_DURATION] = { .type = NLA_U16 }, 543 [NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY] = { .type = NLA_FLAG }, 544 [NL80211_ATTR_MESH_PEER_AID] = 545 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 546 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 547 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 548 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 549 [NL80211_ATTR_HIDDEN_SSID] = 550 NLA_POLICY_RANGE(NLA_U32, 551 NL80211_HIDDEN_SSID_NOT_IN_USE, 552 NL80211_HIDDEN_SSID_ZERO_CONTENTS), 553 [NL80211_ATTR_IE_PROBE_RESP] = 554 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 555 IEEE80211_MAX_DATA_LEN), 556 [NL80211_ATTR_IE_ASSOC_RESP] = 557 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 558 IEEE80211_MAX_DATA_LEN), 559 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 560 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 561 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 562 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 563 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 564 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 565 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 566 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 567 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 568 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 569 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 570 .len = IEEE80211_MAX_DATA_LEN }, 571 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 572 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 573 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 574 .len = NL80211_HT_CAPABILITY_LEN 575 }, 576 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 577 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 578 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 579 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 580 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 581 582 /* need to include at least Auth Transaction and Status Code */ 583 [NL80211_ATTR_AUTH_DATA] = NLA_POLICY_MIN_LEN(4), 584 585 [NL80211_ATTR_VHT_CAPABILITY] = NLA_POLICY_EXACT_LEN_WARN(NL80211_VHT_CAPABILITY_LEN), 586 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 587 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127), 588 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1), 589 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = 590 NLA_POLICY_RANGE(NLA_U32, 591 NL80211_MESH_POWER_UNKNOWN + 1, 592 NL80211_MESH_POWER_MAX), 593 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 594 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 595 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 596 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 597 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 598 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 599 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 600 .len = NL80211_VHT_CAPABILITY_LEN, 601 }, 602 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 603 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 604 .len = IEEE80211_MAX_DATA_LEN }, 605 [NL80211_ATTR_CRIT_PROT_ID] = { .type = NLA_U16 }, 606 [NL80211_ATTR_MAX_CRIT_PROT_DURATION] = 607 NLA_POLICY_MAX(NLA_U16, NL80211_CRIT_PROTO_MAX_DURATION), 608 [NL80211_ATTR_PEER_AID] = 609 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 610 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 611 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 612 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 613 [NL80211_ATTR_CNTDWN_OFFS_BEACON] = { .type = NLA_BINARY }, 614 [NL80211_ATTR_CNTDWN_OFFS_PRESP] = { .type = NLA_BINARY }, 615 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = NLA_POLICY_MIN_LEN(2), 616 /* 617 * The value of the Length field of the Supported Operating 618 * Classes element is between 2 and 253. 619 */ 620 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = 621 NLA_POLICY_RANGE(NLA_BINARY, 2, 253), 622 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 623 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 624 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 625 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 626 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 627 [NL80211_ATTR_QOS_MAP] = NLA_POLICY_RANGE(NLA_BINARY, 628 IEEE80211_QOS_MAP_LEN_MIN, 629 IEEE80211_QOS_MAP_LEN_MAX), 630 [NL80211_ATTR_MAC_HINT] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 631 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 632 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 633 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 634 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 635 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 636 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1), 637 [NL80211_ATTR_USER_PRIO] = 638 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1), 639 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 640 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 641 [NL80211_ATTR_OPER_CLASS] = { .type = NLA_U8 }, 642 [NL80211_ATTR_MAC_MASK] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 643 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 644 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 645 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 646 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 647 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 648 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 649 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = 650 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1), 651 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 652 .len = VHT_MUMIMO_GROUPS_DATA_LEN 653 }, 654 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 655 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1), 656 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 657 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 658 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 659 .len = FILS_MAX_KEK_LEN }, 660 [NL80211_ATTR_FILS_NONCES] = NLA_POLICY_EXACT_LEN_WARN(2 * FILS_NONCE_LEN), 661 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 662 [NL80211_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 663 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 664 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 665 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 666 }, 667 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 668 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 669 .len = FILS_ERP_MAX_USERNAME_LEN }, 670 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 671 .len = FILS_ERP_MAX_REALM_LEN }, 672 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 673 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 674 .len = FILS_ERP_MAX_RRK_LEN }, 675 [NL80211_ATTR_FILS_CACHE_ID] = NLA_POLICY_EXACT_LEN_WARN(2), 676 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 677 [NL80211_ATTR_PMKR0_NAME] = NLA_POLICY_EXACT_LEN(WLAN_PMK_NAME_LEN), 678 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 679 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG }, 680 681 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 }, 682 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 }, 683 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 }, 684 [NL80211_ATTR_HE_CAPABILITY] = 685 NLA_POLICY_RANGE(NLA_BINARY, 686 NL80211_HE_MIN_CAPABILITY_LEN, 687 NL80211_HE_MAX_CAPABILITY_LEN), 688 [NL80211_ATTR_FTM_RESPONDER] = 689 NLA_POLICY_NESTED(nl80211_ftm_responder_policy), 690 [NL80211_ATTR_TIMEOUT] = NLA_POLICY_MIN(NLA_U32, 1), 691 [NL80211_ATTR_PEER_MEASUREMENTS] = 692 NLA_POLICY_NESTED(nl80211_pmsr_attr_policy), 693 [NL80211_ATTR_AIRTIME_WEIGHT] = NLA_POLICY_MIN(NLA_U16, 1), 694 [NL80211_ATTR_SAE_PASSWORD] = { .type = NLA_BINARY, 695 .len = SAE_PASSWORD_MAX_LEN }, 696 [NL80211_ATTR_TWT_RESPONDER] = { .type = NLA_FLAG }, 697 [NL80211_ATTR_HE_OBSS_PD] = NLA_POLICY_NESTED(he_obss_pd_policy), 698 [NL80211_ATTR_VLAN_ID] = NLA_POLICY_RANGE(NLA_U16, 1, VLAN_N_VID - 2), 699 [NL80211_ATTR_HE_BSS_COLOR] = NLA_POLICY_NESTED(he_bss_color_policy), 700 [NL80211_ATTR_TID_CONFIG] = 701 NLA_POLICY_NESTED_ARRAY(nl80211_tid_config_attr_policy), 702 [NL80211_ATTR_CONTROL_PORT_NO_PREAUTH] = { .type = NLA_FLAG }, 703 [NL80211_ATTR_PMK_LIFETIME] = NLA_POLICY_MIN(NLA_U32, 1), 704 [NL80211_ATTR_PMK_REAUTH_THRESHOLD] = NLA_POLICY_RANGE(NLA_U8, 1, 100), 705 [NL80211_ATTR_RECEIVE_MULTICAST] = { .type = NLA_FLAG }, 706 [NL80211_ATTR_WIPHY_FREQ_OFFSET] = NLA_POLICY_RANGE(NLA_U32, 0, 999), 707 [NL80211_ATTR_SCAN_FREQ_KHZ] = { .type = NLA_NESTED }, 708 [NL80211_ATTR_HE_6GHZ_CAPABILITY] = 709 NLA_POLICY_EXACT_LEN(sizeof(struct ieee80211_he_6ghz_capa)), 710 [NL80211_ATTR_FILS_DISCOVERY] = 711 NLA_POLICY_NESTED(nl80211_fils_discovery_policy), 712 [NL80211_ATTR_UNSOL_BCAST_PROBE_RESP] = 713 NLA_POLICY_NESTED(nl80211_unsol_bcast_probe_resp_policy), 714 [NL80211_ATTR_S1G_CAPABILITY] = 715 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN), 716 [NL80211_ATTR_S1G_CAPABILITY_MASK] = 717 NLA_POLICY_EXACT_LEN(IEEE80211_S1G_CAPABILITY_LEN), 718 [NL80211_ATTR_SAE_PWE] = 719 NLA_POLICY_RANGE(NLA_U8, NL80211_SAE_PWE_HUNT_AND_PECK, 720 NL80211_SAE_PWE_BOTH), 721 }; 722 723 /* policy for the key attributes */ 724 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 725 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 726 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 727 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 728 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 729 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 730 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 731 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1), 732 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 733 [NL80211_KEY_MODE] = NLA_POLICY_RANGE(NLA_U8, 0, NL80211_KEY_SET_TX), 734 }; 735 736 /* policy for the key default flags */ 737 static const struct nla_policy 738 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 739 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 740 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 741 }; 742 743 #ifdef CONFIG_PM 744 /* policy for WoWLAN attributes */ 745 static const struct nla_policy 746 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 747 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 748 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 749 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 750 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 751 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 752 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 753 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 754 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 755 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 756 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 757 }; 758 759 static const struct nla_policy 760 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 761 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 762 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 763 [NL80211_WOWLAN_TCP_DST_MAC] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 764 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 765 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 766 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = NLA_POLICY_MIN_LEN(1), 767 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 768 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 769 }, 770 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 771 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 772 }, 773 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 774 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = NLA_POLICY_MIN_LEN(1), 775 [NL80211_WOWLAN_TCP_WAKE_MASK] = NLA_POLICY_MIN_LEN(1), 776 }; 777 #endif /* CONFIG_PM */ 778 779 /* policy for coalesce rule attributes */ 780 static const struct nla_policy 781 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 782 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 783 [NL80211_ATTR_COALESCE_RULE_CONDITION] = 784 NLA_POLICY_RANGE(NLA_U32, 785 NL80211_COALESCE_CONDITION_MATCH, 786 NL80211_COALESCE_CONDITION_NO_MATCH), 787 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 788 }; 789 790 /* policy for GTK rekey offload attributes */ 791 static const struct nla_policy 792 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 793 [NL80211_REKEY_DATA_KEK] = { 794 .type = NLA_BINARY, 795 .len = NL80211_KEK_EXT_LEN 796 }, 797 [NL80211_REKEY_DATA_KCK] = { 798 .type = NLA_BINARY, 799 .len = NL80211_KCK_EXT_LEN 800 }, 801 [NL80211_REKEY_DATA_REPLAY_CTR] = NLA_POLICY_EXACT_LEN(NL80211_REPLAY_CTR_LEN), 802 [NL80211_REKEY_DATA_AKM] = { .type = NLA_U32 }, 803 }; 804 805 static const struct nla_policy 806 nl80211_match_band_rssi_policy[NUM_NL80211_BANDS] = { 807 [NL80211_BAND_2GHZ] = { .type = NLA_S32 }, 808 [NL80211_BAND_5GHZ] = { .type = NLA_S32 }, 809 [NL80211_BAND_6GHZ] = { .type = NLA_S32 }, 810 [NL80211_BAND_60GHZ] = { .type = NLA_S32 }, 811 }; 812 813 static const struct nla_policy 814 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 815 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 816 .len = IEEE80211_MAX_SSID_LEN }, 817 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 818 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 819 [NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI] = 820 NLA_POLICY_NESTED(nl80211_match_band_rssi_policy), 821 }; 822 823 static const struct nla_policy 824 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 825 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 826 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 827 }; 828 829 static const struct nla_policy 830 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 831 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 832 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 833 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 834 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 835 }, 836 }; 837 838 /* policy for NAN function attributes */ 839 static const struct nla_policy 840 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 841 [NL80211_NAN_FUNC_TYPE] = 842 NLA_POLICY_MAX(NLA_U8, NL80211_NAN_FUNC_MAX_TYPE), 843 [NL80211_NAN_FUNC_SERVICE_ID] = { 844 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 845 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 846 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 847 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 848 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 849 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 850 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = NLA_POLICY_EXACT_LEN_WARN(ETH_ALEN), 851 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 852 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 853 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 854 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 855 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 856 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 857 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 858 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 859 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 860 }; 861 862 /* policy for Service Response Filter attributes */ 863 static const struct nla_policy 864 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 865 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 866 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 867 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 868 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 869 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 870 }; 871 872 /* policy for packet pattern attributes */ 873 static const struct nla_policy 874 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 875 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 876 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 877 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 878 }; 879 880 int nl80211_prepare_wdev_dump(struct netlink_callback *cb, 881 struct cfg80211_registered_device **rdev, 882 struct wireless_dev **wdev) 883 { 884 int err; 885 886 if (!cb->args[0]) { 887 struct nlattr **attrbuf; 888 889 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), 890 GFP_KERNEL); 891 if (!attrbuf) 892 return -ENOMEM; 893 894 err = nlmsg_parse_deprecated(cb->nlh, 895 GENL_HDRLEN + nl80211_fam.hdrsize, 896 attrbuf, nl80211_fam.maxattr, 897 nl80211_policy, NULL); 898 if (err) { 899 kfree(attrbuf); 900 return err; 901 } 902 903 *wdev = __cfg80211_wdev_from_attrs(sock_net(cb->skb->sk), 904 attrbuf); 905 kfree(attrbuf); 906 if (IS_ERR(*wdev)) 907 return PTR_ERR(*wdev); 908 *rdev = wiphy_to_rdev((*wdev)->wiphy); 909 /* 0 is the first index - add 1 to parse only once */ 910 cb->args[0] = (*rdev)->wiphy_idx + 1; 911 cb->args[1] = (*wdev)->identifier; 912 } else { 913 /* subtract the 1 again here */ 914 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 915 struct wireless_dev *tmp; 916 917 if (!wiphy) 918 return -ENODEV; 919 *rdev = wiphy_to_rdev(wiphy); 920 *wdev = NULL; 921 922 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 923 if (tmp->identifier == cb->args[1]) { 924 *wdev = tmp; 925 break; 926 } 927 } 928 929 if (!*wdev) 930 return -ENODEV; 931 } 932 933 return 0; 934 } 935 936 /* message building helper */ 937 void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 938 int flags, u8 cmd) 939 { 940 /* since there is no private header just add the generic one */ 941 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 942 } 943 944 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, 945 const struct ieee80211_reg_rule *rule) 946 { 947 int j; 948 struct nlattr *nl_wmm_rules = 949 nla_nest_start_noflag(msg, NL80211_FREQUENCY_ATTR_WMM); 950 951 if (!nl_wmm_rules) 952 goto nla_put_failure; 953 954 for (j = 0; j < IEEE80211_NUM_ACS; j++) { 955 struct nlattr *nl_wmm_rule = nla_nest_start_noflag(msg, j); 956 957 if (!nl_wmm_rule) 958 goto nla_put_failure; 959 960 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN, 961 rule->wmm_rule.client[j].cw_min) || 962 nla_put_u16(msg, NL80211_WMMR_CW_MAX, 963 rule->wmm_rule.client[j].cw_max) || 964 nla_put_u8(msg, NL80211_WMMR_AIFSN, 965 rule->wmm_rule.client[j].aifsn) || 966 nla_put_u16(msg, NL80211_WMMR_TXOP, 967 rule->wmm_rule.client[j].cot)) 968 goto nla_put_failure; 969 970 nla_nest_end(msg, nl_wmm_rule); 971 } 972 nla_nest_end(msg, nl_wmm_rules); 973 974 return 0; 975 976 nla_put_failure: 977 return -ENOBUFS; 978 } 979 980 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, 981 struct ieee80211_channel *chan, 982 bool large) 983 { 984 /* Some channels must be completely excluded from the 985 * list to protect old user-space tools from breaking 986 */ 987 if (!large && chan->flags & 988 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 989 return 0; 990 if (!large && chan->freq_offset) 991 return 0; 992 993 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 994 chan->center_freq)) 995 goto nla_put_failure; 996 997 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_OFFSET, chan->freq_offset)) 998 goto nla_put_failure; 999 1000 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 1001 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 1002 goto nla_put_failure; 1003 if (chan->flags & IEEE80211_CHAN_NO_IR) { 1004 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 1005 goto nla_put_failure; 1006 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 1007 goto nla_put_failure; 1008 } 1009 if (chan->flags & IEEE80211_CHAN_RADAR) { 1010 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 1011 goto nla_put_failure; 1012 if (large) { 1013 u32 time; 1014 1015 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 1016 1017 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 1018 chan->dfs_state)) 1019 goto nla_put_failure; 1020 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 1021 time)) 1022 goto nla_put_failure; 1023 if (nla_put_u32(msg, 1024 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 1025 chan->dfs_cac_ms)) 1026 goto nla_put_failure; 1027 } 1028 } 1029 1030 if (large) { 1031 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 1032 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 1033 goto nla_put_failure; 1034 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 1035 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 1036 goto nla_put_failure; 1037 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 1038 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 1039 goto nla_put_failure; 1040 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 1041 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 1042 goto nla_put_failure; 1043 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 1044 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 1045 goto nla_put_failure; 1046 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 1047 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 1048 goto nla_put_failure; 1049 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 1050 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 1051 goto nla_put_failure; 1052 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 1053 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 1054 goto nla_put_failure; 1055 if ((chan->flags & IEEE80211_CHAN_NO_HE) && 1056 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HE)) 1057 goto nla_put_failure; 1058 if ((chan->flags & IEEE80211_CHAN_1MHZ) && 1059 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_1MHZ)) 1060 goto nla_put_failure; 1061 if ((chan->flags & IEEE80211_CHAN_2MHZ) && 1062 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_2MHZ)) 1063 goto nla_put_failure; 1064 if ((chan->flags & IEEE80211_CHAN_4MHZ) && 1065 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_4MHZ)) 1066 goto nla_put_failure; 1067 if ((chan->flags & IEEE80211_CHAN_8MHZ) && 1068 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_8MHZ)) 1069 goto nla_put_failure; 1070 if ((chan->flags & IEEE80211_CHAN_16MHZ) && 1071 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_16MHZ)) 1072 goto nla_put_failure; 1073 } 1074 1075 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 1076 DBM_TO_MBM(chan->max_power))) 1077 goto nla_put_failure; 1078 1079 if (large) { 1080 const struct ieee80211_reg_rule *rule = 1081 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); 1082 1083 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) { 1084 if (nl80211_msg_put_wmm_rules(msg, rule)) 1085 goto nla_put_failure; 1086 } 1087 } 1088 1089 return 0; 1090 1091 nla_put_failure: 1092 return -ENOBUFS; 1093 } 1094 1095 static bool nl80211_put_txq_stats(struct sk_buff *msg, 1096 struct cfg80211_txq_stats *txqstats, 1097 int attrtype) 1098 { 1099 struct nlattr *txqattr; 1100 1101 #define PUT_TXQVAL_U32(attr, memb) do { \ 1102 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \ 1103 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \ 1104 return false; \ 1105 } while (0) 1106 1107 txqattr = nla_nest_start_noflag(msg, attrtype); 1108 if (!txqattr) 1109 return false; 1110 1111 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes); 1112 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets); 1113 PUT_TXQVAL_U32(FLOWS, flows); 1114 PUT_TXQVAL_U32(DROPS, drops); 1115 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks); 1116 PUT_TXQVAL_U32(OVERLIMIT, overlimit); 1117 PUT_TXQVAL_U32(OVERMEMORY, overmemory); 1118 PUT_TXQVAL_U32(COLLISIONS, collisions); 1119 PUT_TXQVAL_U32(TX_BYTES, tx_bytes); 1120 PUT_TXQVAL_U32(TX_PACKETS, tx_packets); 1121 PUT_TXQVAL_U32(MAX_FLOWS, max_flows); 1122 nla_nest_end(msg, txqattr); 1123 1124 #undef PUT_TXQVAL_U32 1125 return true; 1126 } 1127 1128 /* netlink command implementations */ 1129 1130 struct key_parse { 1131 struct key_params p; 1132 int idx; 1133 int type; 1134 bool def, defmgmt, defbeacon; 1135 bool def_uni, def_multi; 1136 }; 1137 1138 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key, 1139 struct key_parse *k) 1140 { 1141 struct nlattr *tb[NL80211_KEY_MAX + 1]; 1142 int err = nla_parse_nested_deprecated(tb, NL80211_KEY_MAX, key, 1143 nl80211_key_policy, 1144 info->extack); 1145 if (err) 1146 return err; 1147 1148 k->def = !!tb[NL80211_KEY_DEFAULT]; 1149 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 1150 k->defbeacon = !!tb[NL80211_KEY_DEFAULT_BEACON]; 1151 1152 if (k->def) { 1153 k->def_uni = true; 1154 k->def_multi = true; 1155 } 1156 if (k->defmgmt || k->defbeacon) 1157 k->def_multi = true; 1158 1159 if (tb[NL80211_KEY_IDX]) 1160 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 1161 1162 if (tb[NL80211_KEY_DATA]) { 1163 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 1164 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 1165 } 1166 1167 if (tb[NL80211_KEY_SEQ]) { 1168 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 1169 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 1170 } 1171 1172 if (tb[NL80211_KEY_CIPHER]) 1173 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 1174 1175 if (tb[NL80211_KEY_TYPE]) 1176 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 1177 1178 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 1179 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 1180 1181 err = nla_parse_nested_deprecated(kdt, 1182 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 1183 tb[NL80211_KEY_DEFAULT_TYPES], 1184 nl80211_key_default_policy, 1185 info->extack); 1186 if (err) 1187 return err; 1188 1189 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 1190 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 1191 } 1192 1193 if (tb[NL80211_KEY_MODE]) 1194 k->p.mode = nla_get_u8(tb[NL80211_KEY_MODE]); 1195 1196 return 0; 1197 } 1198 1199 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 1200 { 1201 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 1202 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 1203 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 1204 } 1205 1206 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 1207 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 1208 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 1209 } 1210 1211 if (info->attrs[NL80211_ATTR_KEY_IDX]) 1212 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 1213 1214 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 1215 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 1216 1217 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 1218 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 1219 1220 if (k->def) { 1221 k->def_uni = true; 1222 k->def_multi = true; 1223 } 1224 if (k->defmgmt) 1225 k->def_multi = true; 1226 1227 if (info->attrs[NL80211_ATTR_KEY_TYPE]) 1228 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 1229 1230 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 1231 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 1232 int err = nla_parse_nested_deprecated(kdt, 1233 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 1234 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 1235 nl80211_key_default_policy, 1236 info->extack); 1237 if (err) 1238 return err; 1239 1240 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 1241 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 1242 } 1243 1244 return 0; 1245 } 1246 1247 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 1248 { 1249 int err; 1250 1251 memset(k, 0, sizeof(*k)); 1252 k->idx = -1; 1253 k->type = -1; 1254 1255 if (info->attrs[NL80211_ATTR_KEY]) 1256 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k); 1257 else 1258 err = nl80211_parse_key_old(info, k); 1259 1260 if (err) 1261 return err; 1262 1263 if ((k->def ? 1 : 0) + (k->defmgmt ? 1 : 0) + 1264 (k->defbeacon ? 1 : 0) > 1) { 1265 GENL_SET_ERR_MSG(info, 1266 "key with multiple default flags is invalid"); 1267 return -EINVAL; 1268 } 1269 1270 if (k->defmgmt || k->defbeacon) { 1271 if (k->def_uni || !k->def_multi) { 1272 GENL_SET_ERR_MSG(info, 1273 "defmgmt/defbeacon key must be mcast"); 1274 return -EINVAL; 1275 } 1276 } 1277 1278 if (k->idx != -1) { 1279 if (k->defmgmt) { 1280 if (k->idx < 4 || k->idx > 5) { 1281 GENL_SET_ERR_MSG(info, 1282 "defmgmt key idx not 4 or 5"); 1283 return -EINVAL; 1284 } 1285 } else if (k->defbeacon) { 1286 if (k->idx < 6 || k->idx > 7) { 1287 GENL_SET_ERR_MSG(info, 1288 "defbeacon key idx not 6 or 7"); 1289 return -EINVAL; 1290 } 1291 } else if (k->def) { 1292 if (k->idx < 0 || k->idx > 3) { 1293 GENL_SET_ERR_MSG(info, "def key idx not 0-3"); 1294 return -EINVAL; 1295 } 1296 } else { 1297 if (k->idx < 0 || k->idx > 7) { 1298 GENL_SET_ERR_MSG(info, "key idx not 0-7"); 1299 return -EINVAL; 1300 } 1301 } 1302 } 1303 1304 return 0; 1305 } 1306 1307 static struct cfg80211_cached_keys * 1308 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 1309 struct genl_info *info, bool *no_ht) 1310 { 1311 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS]; 1312 struct key_parse parse; 1313 struct nlattr *key; 1314 struct cfg80211_cached_keys *result; 1315 int rem, err, def = 0; 1316 bool have_key = false; 1317 1318 nla_for_each_nested(key, keys, rem) { 1319 have_key = true; 1320 break; 1321 } 1322 1323 if (!have_key) 1324 return NULL; 1325 1326 result = kzalloc(sizeof(*result), GFP_KERNEL); 1327 if (!result) 1328 return ERR_PTR(-ENOMEM); 1329 1330 result->def = -1; 1331 1332 nla_for_each_nested(key, keys, rem) { 1333 memset(&parse, 0, sizeof(parse)); 1334 parse.idx = -1; 1335 1336 err = nl80211_parse_key_new(info, key, &parse); 1337 if (err) 1338 goto error; 1339 err = -EINVAL; 1340 if (!parse.p.key) 1341 goto error; 1342 if (parse.idx < 0 || parse.idx > 3) { 1343 GENL_SET_ERR_MSG(info, "key index out of range [0-3]"); 1344 goto error; 1345 } 1346 if (parse.def) { 1347 if (def) { 1348 GENL_SET_ERR_MSG(info, 1349 "only one key can be default"); 1350 goto error; 1351 } 1352 def = 1; 1353 result->def = parse.idx; 1354 if (!parse.def_uni || !parse.def_multi) 1355 goto error; 1356 } else if (parse.defmgmt) 1357 goto error; 1358 err = cfg80211_validate_key_settings(rdev, &parse.p, 1359 parse.idx, false, NULL); 1360 if (err) 1361 goto error; 1362 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 1363 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 1364 GENL_SET_ERR_MSG(info, "connect key must be WEP"); 1365 err = -EINVAL; 1366 goto error; 1367 } 1368 result->params[parse.idx].cipher = parse.p.cipher; 1369 result->params[parse.idx].key_len = parse.p.key_len; 1370 result->params[parse.idx].key = result->data[parse.idx]; 1371 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 1372 1373 /* must be WEP key if we got here */ 1374 if (no_ht) 1375 *no_ht = true; 1376 } 1377 1378 if (result->def < 0) { 1379 err = -EINVAL; 1380 GENL_SET_ERR_MSG(info, "need a default/TX key"); 1381 goto error; 1382 } 1383 1384 return result; 1385 error: 1386 kfree(result); 1387 return ERR_PTR(err); 1388 } 1389 1390 static int nl80211_key_allowed(struct wireless_dev *wdev) 1391 { 1392 ASSERT_WDEV_LOCK(wdev); 1393 1394 switch (wdev->iftype) { 1395 case NL80211_IFTYPE_AP: 1396 case NL80211_IFTYPE_AP_VLAN: 1397 case NL80211_IFTYPE_P2P_GO: 1398 case NL80211_IFTYPE_MESH_POINT: 1399 break; 1400 case NL80211_IFTYPE_ADHOC: 1401 case NL80211_IFTYPE_STATION: 1402 case NL80211_IFTYPE_P2P_CLIENT: 1403 if (!wdev->current_bss) 1404 return -ENOLINK; 1405 break; 1406 case NL80211_IFTYPE_UNSPECIFIED: 1407 case NL80211_IFTYPE_OCB: 1408 case NL80211_IFTYPE_MONITOR: 1409 case NL80211_IFTYPE_NAN: 1410 case NL80211_IFTYPE_P2P_DEVICE: 1411 case NL80211_IFTYPE_WDS: 1412 case NUM_NL80211_IFTYPES: 1413 return -EINVAL; 1414 } 1415 1416 return 0; 1417 } 1418 1419 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 1420 u32 freq) 1421 { 1422 struct ieee80211_channel *chan; 1423 1424 chan = ieee80211_get_channel_khz(wiphy, freq); 1425 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 1426 return NULL; 1427 return chan; 1428 } 1429 1430 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1431 { 1432 struct nlattr *nl_modes = nla_nest_start_noflag(msg, attr); 1433 int i; 1434 1435 if (!nl_modes) 1436 goto nla_put_failure; 1437 1438 i = 0; 1439 while (ifmodes) { 1440 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1441 goto nla_put_failure; 1442 ifmodes >>= 1; 1443 i++; 1444 } 1445 1446 nla_nest_end(msg, nl_modes); 1447 return 0; 1448 1449 nla_put_failure: 1450 return -ENOBUFS; 1451 } 1452 1453 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1454 struct sk_buff *msg, 1455 bool large) 1456 { 1457 struct nlattr *nl_combis; 1458 int i, j; 1459 1460 nl_combis = nla_nest_start_noflag(msg, 1461 NL80211_ATTR_INTERFACE_COMBINATIONS); 1462 if (!nl_combis) 1463 goto nla_put_failure; 1464 1465 for (i = 0; i < wiphy->n_iface_combinations; i++) { 1466 const struct ieee80211_iface_combination *c; 1467 struct nlattr *nl_combi, *nl_limits; 1468 1469 c = &wiphy->iface_combinations[i]; 1470 1471 nl_combi = nla_nest_start_noflag(msg, i + 1); 1472 if (!nl_combi) 1473 goto nla_put_failure; 1474 1475 nl_limits = nla_nest_start_noflag(msg, 1476 NL80211_IFACE_COMB_LIMITS); 1477 if (!nl_limits) 1478 goto nla_put_failure; 1479 1480 for (j = 0; j < c->n_limits; j++) { 1481 struct nlattr *nl_limit; 1482 1483 nl_limit = nla_nest_start_noflag(msg, j + 1); 1484 if (!nl_limit) 1485 goto nla_put_failure; 1486 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 1487 c->limits[j].max)) 1488 goto nla_put_failure; 1489 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1490 c->limits[j].types)) 1491 goto nla_put_failure; 1492 nla_nest_end(msg, nl_limit); 1493 } 1494 1495 nla_nest_end(msg, nl_limits); 1496 1497 if (c->beacon_int_infra_match && 1498 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1499 goto nla_put_failure; 1500 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1501 c->num_different_channels) || 1502 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1503 c->max_interfaces)) 1504 goto nla_put_failure; 1505 if (large && 1506 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1507 c->radar_detect_widths) || 1508 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1509 c->radar_detect_regions))) 1510 goto nla_put_failure; 1511 if (c->beacon_int_min_gcd && 1512 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1513 c->beacon_int_min_gcd)) 1514 goto nla_put_failure; 1515 1516 nla_nest_end(msg, nl_combi); 1517 } 1518 1519 nla_nest_end(msg, nl_combis); 1520 1521 return 0; 1522 nla_put_failure: 1523 return -ENOBUFS; 1524 } 1525 1526 #ifdef CONFIG_PM 1527 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1528 struct sk_buff *msg) 1529 { 1530 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1531 struct nlattr *nl_tcp; 1532 1533 if (!tcp) 1534 return 0; 1535 1536 nl_tcp = nla_nest_start_noflag(msg, 1537 NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1538 if (!nl_tcp) 1539 return -ENOBUFS; 1540 1541 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1542 tcp->data_payload_max)) 1543 return -ENOBUFS; 1544 1545 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1546 tcp->data_payload_max)) 1547 return -ENOBUFS; 1548 1549 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1550 return -ENOBUFS; 1551 1552 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1553 sizeof(*tcp->tok), tcp->tok)) 1554 return -ENOBUFS; 1555 1556 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1557 tcp->data_interval_max)) 1558 return -ENOBUFS; 1559 1560 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1561 tcp->wake_payload_max)) 1562 return -ENOBUFS; 1563 1564 nla_nest_end(msg, nl_tcp); 1565 return 0; 1566 } 1567 1568 static int nl80211_send_wowlan(struct sk_buff *msg, 1569 struct cfg80211_registered_device *rdev, 1570 bool large) 1571 { 1572 struct nlattr *nl_wowlan; 1573 1574 if (!rdev->wiphy.wowlan) 1575 return 0; 1576 1577 nl_wowlan = nla_nest_start_noflag(msg, 1578 NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1579 if (!nl_wowlan) 1580 return -ENOBUFS; 1581 1582 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1583 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1584 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1585 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1586 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1587 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1588 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1590 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1591 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1592 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1593 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1594 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1595 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1596 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1597 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1598 return -ENOBUFS; 1599 1600 if (rdev->wiphy.wowlan->n_patterns) { 1601 struct nl80211_pattern_support pat = { 1602 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1603 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1604 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1605 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1606 }; 1607 1608 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1609 sizeof(pat), &pat)) 1610 return -ENOBUFS; 1611 } 1612 1613 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1614 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1615 rdev->wiphy.wowlan->max_nd_match_sets)) 1616 return -ENOBUFS; 1617 1618 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1619 return -ENOBUFS; 1620 1621 nla_nest_end(msg, nl_wowlan); 1622 1623 return 0; 1624 } 1625 #endif 1626 1627 static int nl80211_send_coalesce(struct sk_buff *msg, 1628 struct cfg80211_registered_device *rdev) 1629 { 1630 struct nl80211_coalesce_rule_support rule; 1631 1632 if (!rdev->wiphy.coalesce) 1633 return 0; 1634 1635 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1636 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1637 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1638 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1639 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1640 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1641 1642 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1643 return -ENOBUFS; 1644 1645 return 0; 1646 } 1647 1648 static int 1649 nl80211_send_iftype_data(struct sk_buff *msg, 1650 const struct ieee80211_supported_band *sband, 1651 const struct ieee80211_sband_iftype_data *iftdata) 1652 { 1653 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap; 1654 1655 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES, 1656 iftdata->types_mask)) 1657 return -ENOBUFS; 1658 1659 if (he_cap->has_he) { 1660 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC, 1661 sizeof(he_cap->he_cap_elem.mac_cap_info), 1662 he_cap->he_cap_elem.mac_cap_info) || 1663 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY, 1664 sizeof(he_cap->he_cap_elem.phy_cap_info), 1665 he_cap->he_cap_elem.phy_cap_info) || 1666 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET, 1667 sizeof(he_cap->he_mcs_nss_supp), 1668 &he_cap->he_mcs_nss_supp) || 1669 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE, 1670 sizeof(he_cap->ppe_thres), he_cap->ppe_thres)) 1671 return -ENOBUFS; 1672 } 1673 1674 if (sband->band == NL80211_BAND_6GHZ && 1675 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_6GHZ_CAPA, 1676 sizeof(iftdata->he_6ghz_capa), 1677 &iftdata->he_6ghz_capa)) 1678 return -ENOBUFS; 1679 1680 return 0; 1681 } 1682 1683 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1684 struct ieee80211_supported_band *sband, 1685 bool large) 1686 { 1687 struct nlattr *nl_rates, *nl_rate; 1688 struct ieee80211_rate *rate; 1689 int i; 1690 1691 /* add HT info */ 1692 if (sband->ht_cap.ht_supported && 1693 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1694 sizeof(sband->ht_cap.mcs), 1695 &sband->ht_cap.mcs) || 1696 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1697 sband->ht_cap.cap) || 1698 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1699 sband->ht_cap.ampdu_factor) || 1700 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1701 sband->ht_cap.ampdu_density))) 1702 return -ENOBUFS; 1703 1704 /* add VHT info */ 1705 if (sband->vht_cap.vht_supported && 1706 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1707 sizeof(sband->vht_cap.vht_mcs), 1708 &sband->vht_cap.vht_mcs) || 1709 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1710 sband->vht_cap.cap))) 1711 return -ENOBUFS; 1712 1713 if (large && sband->n_iftype_data) { 1714 struct nlattr *nl_iftype_data = 1715 nla_nest_start_noflag(msg, 1716 NL80211_BAND_ATTR_IFTYPE_DATA); 1717 int err; 1718 1719 if (!nl_iftype_data) 1720 return -ENOBUFS; 1721 1722 for (i = 0; i < sband->n_iftype_data; i++) { 1723 struct nlattr *iftdata; 1724 1725 iftdata = nla_nest_start_noflag(msg, i + 1); 1726 if (!iftdata) 1727 return -ENOBUFS; 1728 1729 err = nl80211_send_iftype_data(msg, sband, 1730 &sband->iftype_data[i]); 1731 if (err) 1732 return err; 1733 1734 nla_nest_end(msg, iftdata); 1735 } 1736 1737 nla_nest_end(msg, nl_iftype_data); 1738 } 1739 1740 /* add EDMG info */ 1741 if (large && sband->edmg_cap.channels && 1742 (nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_CHANNELS, 1743 sband->edmg_cap.channels) || 1744 nla_put_u8(msg, NL80211_BAND_ATTR_EDMG_BW_CONFIG, 1745 sband->edmg_cap.bw_config))) 1746 1747 return -ENOBUFS; 1748 1749 /* add bitrates */ 1750 nl_rates = nla_nest_start_noflag(msg, NL80211_BAND_ATTR_RATES); 1751 if (!nl_rates) 1752 return -ENOBUFS; 1753 1754 for (i = 0; i < sband->n_bitrates; i++) { 1755 nl_rate = nla_nest_start_noflag(msg, i); 1756 if (!nl_rate) 1757 return -ENOBUFS; 1758 1759 rate = &sband->bitrates[i]; 1760 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1761 rate->bitrate)) 1762 return -ENOBUFS; 1763 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1764 nla_put_flag(msg, 1765 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1766 return -ENOBUFS; 1767 1768 nla_nest_end(msg, nl_rate); 1769 } 1770 1771 nla_nest_end(msg, nl_rates); 1772 1773 return 0; 1774 } 1775 1776 static int 1777 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1778 const struct ieee80211_txrx_stypes *mgmt_stypes) 1779 { 1780 u16 stypes; 1781 struct nlattr *nl_ftypes, *nl_ifs; 1782 enum nl80211_iftype ift; 1783 int i; 1784 1785 if (!mgmt_stypes) 1786 return 0; 1787 1788 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_TX_FRAME_TYPES); 1789 if (!nl_ifs) 1790 return -ENOBUFS; 1791 1792 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1793 nl_ftypes = nla_nest_start_noflag(msg, ift); 1794 if (!nl_ftypes) 1795 return -ENOBUFS; 1796 i = 0; 1797 stypes = mgmt_stypes[ift].tx; 1798 while (stypes) { 1799 if ((stypes & 1) && 1800 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1801 (i << 4) | IEEE80211_FTYPE_MGMT)) 1802 return -ENOBUFS; 1803 stypes >>= 1; 1804 i++; 1805 } 1806 nla_nest_end(msg, nl_ftypes); 1807 } 1808 1809 nla_nest_end(msg, nl_ifs); 1810 1811 nl_ifs = nla_nest_start_noflag(msg, NL80211_ATTR_RX_FRAME_TYPES); 1812 if (!nl_ifs) 1813 return -ENOBUFS; 1814 1815 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1816 nl_ftypes = nla_nest_start_noflag(msg, ift); 1817 if (!nl_ftypes) 1818 return -ENOBUFS; 1819 i = 0; 1820 stypes = mgmt_stypes[ift].rx; 1821 while (stypes) { 1822 if ((stypes & 1) && 1823 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1824 (i << 4) | IEEE80211_FTYPE_MGMT)) 1825 return -ENOBUFS; 1826 stypes >>= 1; 1827 i++; 1828 } 1829 nla_nest_end(msg, nl_ftypes); 1830 } 1831 nla_nest_end(msg, nl_ifs); 1832 1833 return 0; 1834 } 1835 1836 #define CMD(op, n) \ 1837 do { \ 1838 if (rdev->ops->op) { \ 1839 i++; \ 1840 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1841 goto nla_put_failure; \ 1842 } \ 1843 } while (0) 1844 1845 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 1846 struct sk_buff *msg) 1847 { 1848 int i = 0; 1849 1850 /* 1851 * do *NOT* add anything into this function, new things need to be 1852 * advertised only to new versions of userspace that can deal with 1853 * the split (and they can't possibly care about new features... 1854 */ 1855 CMD(add_virtual_intf, NEW_INTERFACE); 1856 CMD(change_virtual_intf, SET_INTERFACE); 1857 CMD(add_key, NEW_KEY); 1858 CMD(start_ap, START_AP); 1859 CMD(add_station, NEW_STATION); 1860 CMD(add_mpath, NEW_MPATH); 1861 CMD(update_mesh_config, SET_MESH_CONFIG); 1862 CMD(change_bss, SET_BSS); 1863 CMD(auth, AUTHENTICATE); 1864 CMD(assoc, ASSOCIATE); 1865 CMD(deauth, DEAUTHENTICATE); 1866 CMD(disassoc, DISASSOCIATE); 1867 CMD(join_ibss, JOIN_IBSS); 1868 CMD(join_mesh, JOIN_MESH); 1869 CMD(set_pmksa, SET_PMKSA); 1870 CMD(del_pmksa, DEL_PMKSA); 1871 CMD(flush_pmksa, FLUSH_PMKSA); 1872 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1873 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1874 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1875 CMD(mgmt_tx, FRAME); 1876 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1877 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1878 i++; 1879 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1880 goto nla_put_failure; 1881 } 1882 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1883 rdev->ops->join_mesh) { 1884 i++; 1885 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1886 goto nla_put_failure; 1887 } 1888 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1889 CMD(tdls_mgmt, TDLS_MGMT); 1890 CMD(tdls_oper, TDLS_OPER); 1891 } 1892 if (rdev->wiphy.max_sched_scan_reqs) 1893 CMD(sched_scan_start, START_SCHED_SCAN); 1894 CMD(probe_client, PROBE_CLIENT); 1895 CMD(set_noack_map, SET_NOACK_MAP); 1896 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1897 i++; 1898 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1899 goto nla_put_failure; 1900 } 1901 CMD(start_p2p_device, START_P2P_DEVICE); 1902 CMD(set_mcast_rate, SET_MCAST_RATE); 1903 #ifdef CONFIG_NL80211_TESTMODE 1904 CMD(testmode_cmd, TESTMODE); 1905 #endif 1906 1907 if (rdev->ops->connect || rdev->ops->auth) { 1908 i++; 1909 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1910 goto nla_put_failure; 1911 } 1912 1913 if (rdev->ops->disconnect || rdev->ops->deauth) { 1914 i++; 1915 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1916 goto nla_put_failure; 1917 } 1918 1919 return i; 1920 nla_put_failure: 1921 return -ENOBUFS; 1922 } 1923 1924 static int 1925 nl80211_send_pmsr_ftm_capa(const struct cfg80211_pmsr_capabilities *cap, 1926 struct sk_buff *msg) 1927 { 1928 struct nlattr *ftm; 1929 1930 if (!cap->ftm.supported) 1931 return 0; 1932 1933 ftm = nla_nest_start_noflag(msg, NL80211_PMSR_TYPE_FTM); 1934 if (!ftm) 1935 return -ENOBUFS; 1936 1937 if (cap->ftm.asap && nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_ASAP)) 1938 return -ENOBUFS; 1939 if (cap->ftm.non_asap && 1940 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_ASAP)) 1941 return -ENOBUFS; 1942 if (cap->ftm.request_lci && 1943 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_LCI)) 1944 return -ENOBUFS; 1945 if (cap->ftm.request_civicloc && 1946 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_REQ_CIVICLOC)) 1947 return -ENOBUFS; 1948 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_PREAMBLES, 1949 cap->ftm.preambles)) 1950 return -ENOBUFS; 1951 if (nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_BANDWIDTHS, 1952 cap->ftm.bandwidths)) 1953 return -ENOBUFS; 1954 if (cap->ftm.max_bursts_exponent >= 0 && 1955 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_BURSTS_EXPONENT, 1956 cap->ftm.max_bursts_exponent)) 1957 return -ENOBUFS; 1958 if (cap->ftm.max_ftms_per_burst && 1959 nla_put_u32(msg, NL80211_PMSR_FTM_CAPA_ATTR_MAX_FTMS_PER_BURST, 1960 cap->ftm.max_ftms_per_burst)) 1961 return -ENOBUFS; 1962 if (cap->ftm.trigger_based && 1963 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_TRIGGER_BASED)) 1964 return -ENOBUFS; 1965 if (cap->ftm.non_trigger_based && 1966 nla_put_flag(msg, NL80211_PMSR_FTM_CAPA_ATTR_NON_TRIGGER_BASED)) 1967 return -ENOBUFS; 1968 1969 nla_nest_end(msg, ftm); 1970 return 0; 1971 } 1972 1973 static int nl80211_send_pmsr_capa(struct cfg80211_registered_device *rdev, 1974 struct sk_buff *msg) 1975 { 1976 const struct cfg80211_pmsr_capabilities *cap = rdev->wiphy.pmsr_capa; 1977 struct nlattr *pmsr, *caps; 1978 1979 if (!cap) 1980 return 0; 1981 1982 /* 1983 * we don't need to clean up anything here since the caller 1984 * will genlmsg_cancel() if we fail 1985 */ 1986 1987 pmsr = nla_nest_start_noflag(msg, NL80211_ATTR_PEER_MEASUREMENTS); 1988 if (!pmsr) 1989 return -ENOBUFS; 1990 1991 if (nla_put_u32(msg, NL80211_PMSR_ATTR_MAX_PEERS, cap->max_peers)) 1992 return -ENOBUFS; 1993 1994 if (cap->report_ap_tsf && 1995 nla_put_flag(msg, NL80211_PMSR_ATTR_REPORT_AP_TSF)) 1996 return -ENOBUFS; 1997 1998 if (cap->randomize_mac_addr && 1999 nla_put_flag(msg, NL80211_PMSR_ATTR_RANDOMIZE_MAC_ADDR)) 2000 return -ENOBUFS; 2001 2002 caps = nla_nest_start_noflag(msg, NL80211_PMSR_ATTR_TYPE_CAPA); 2003 if (!caps) 2004 return -ENOBUFS; 2005 2006 if (nl80211_send_pmsr_ftm_capa(cap, msg)) 2007 return -ENOBUFS; 2008 2009 nla_nest_end(msg, caps); 2010 nla_nest_end(msg, pmsr); 2011 2012 return 0; 2013 } 2014 2015 static int 2016 nl80211_put_iftype_akm_suites(struct cfg80211_registered_device *rdev, 2017 struct sk_buff *msg) 2018 { 2019 int i; 2020 struct nlattr *nested, *nested_akms; 2021 const struct wiphy_iftype_akm_suites *iftype_akms; 2022 2023 if (!rdev->wiphy.num_iftype_akm_suites || 2024 !rdev->wiphy.iftype_akm_suites) 2025 return 0; 2026 2027 nested = nla_nest_start(msg, NL80211_ATTR_IFTYPE_AKM_SUITES); 2028 if (!nested) 2029 return -ENOBUFS; 2030 2031 for (i = 0; i < rdev->wiphy.num_iftype_akm_suites; i++) { 2032 nested_akms = nla_nest_start(msg, i + 1); 2033 if (!nested_akms) 2034 return -ENOBUFS; 2035 2036 iftype_akms = &rdev->wiphy.iftype_akm_suites[i]; 2037 2038 if (nl80211_put_iftypes(msg, NL80211_IFTYPE_AKM_ATTR_IFTYPES, 2039 iftype_akms->iftypes_mask)) 2040 return -ENOBUFS; 2041 2042 if (nla_put(msg, NL80211_IFTYPE_AKM_ATTR_SUITES, 2043 sizeof(u32) * iftype_akms->n_akm_suites, 2044 iftype_akms->akm_suites)) { 2045 return -ENOBUFS; 2046 } 2047 nla_nest_end(msg, nested_akms); 2048 } 2049 2050 nla_nest_end(msg, nested); 2051 2052 return 0; 2053 } 2054 2055 static int 2056 nl80211_put_tid_config_support(struct cfg80211_registered_device *rdev, 2057 struct sk_buff *msg) 2058 { 2059 struct nlattr *supp; 2060 2061 if (!rdev->wiphy.tid_config_support.vif && 2062 !rdev->wiphy.tid_config_support.peer) 2063 return 0; 2064 2065 supp = nla_nest_start(msg, NL80211_ATTR_TID_CONFIG); 2066 if (!supp) 2067 return -ENOSPC; 2068 2069 if (rdev->wiphy.tid_config_support.vif && 2070 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_VIF_SUPP, 2071 rdev->wiphy.tid_config_support.vif, 2072 NL80211_TID_CONFIG_ATTR_PAD)) 2073 goto fail; 2074 2075 if (rdev->wiphy.tid_config_support.peer && 2076 nla_put_u64_64bit(msg, NL80211_TID_CONFIG_ATTR_PEER_SUPP, 2077 rdev->wiphy.tid_config_support.peer, 2078 NL80211_TID_CONFIG_ATTR_PAD)) 2079 goto fail; 2080 2081 /* for now we just use the same value ... makes more sense */ 2082 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_SHORT, 2083 rdev->wiphy.tid_config_support.max_retry)) 2084 goto fail; 2085 if (nla_put_u8(msg, NL80211_TID_CONFIG_ATTR_RETRY_LONG, 2086 rdev->wiphy.tid_config_support.max_retry)) 2087 goto fail; 2088 2089 nla_nest_end(msg, supp); 2090 2091 return 0; 2092 fail: 2093 nla_nest_cancel(msg, supp); 2094 return -ENOBUFS; 2095 } 2096 2097 struct nl80211_dump_wiphy_state { 2098 s64 filter_wiphy; 2099 long start; 2100 long split_start, band_start, chan_start, capa_start; 2101 bool split; 2102 }; 2103 2104 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 2105 enum nl80211_commands cmd, 2106 struct sk_buff *msg, u32 portid, u32 seq, 2107 int flags, struct nl80211_dump_wiphy_state *state) 2108 { 2109 void *hdr; 2110 struct nlattr *nl_bands, *nl_band; 2111 struct nlattr *nl_freqs, *nl_freq; 2112 struct nlattr *nl_cmds; 2113 enum nl80211_band band; 2114 struct ieee80211_channel *chan; 2115 int i; 2116 const struct ieee80211_txrx_stypes *mgmt_stypes = 2117 rdev->wiphy.mgmt_stypes; 2118 u32 features; 2119 2120 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2121 if (!hdr) 2122 return -ENOBUFS; 2123 2124 if (WARN_ON(!state)) 2125 return -EINVAL; 2126 2127 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2128 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 2129 wiphy_name(&rdev->wiphy)) || 2130 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2131 cfg80211_rdev_list_generation)) 2132 goto nla_put_failure; 2133 2134 if (cmd != NL80211_CMD_NEW_WIPHY) 2135 goto finish; 2136 2137 switch (state->split_start) { 2138 case 0: 2139 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 2140 rdev->wiphy.retry_short) || 2141 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 2142 rdev->wiphy.retry_long) || 2143 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 2144 rdev->wiphy.frag_threshold) || 2145 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 2146 rdev->wiphy.rts_threshold) || 2147 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 2148 rdev->wiphy.coverage_class) || 2149 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 2150 rdev->wiphy.max_scan_ssids) || 2151 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 2152 rdev->wiphy.max_sched_scan_ssids) || 2153 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 2154 rdev->wiphy.max_scan_ie_len) || 2155 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 2156 rdev->wiphy.max_sched_scan_ie_len) || 2157 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 2158 rdev->wiphy.max_match_sets)) 2159 goto nla_put_failure; 2160 2161 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 2162 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 2163 goto nla_put_failure; 2164 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 2165 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 2166 goto nla_put_failure; 2167 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 2168 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 2169 goto nla_put_failure; 2170 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 2171 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 2172 goto nla_put_failure; 2173 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 2174 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 2175 goto nla_put_failure; 2176 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 2177 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 2178 goto nla_put_failure; 2179 state->split_start++; 2180 if (state->split) 2181 break; 2182 fallthrough; 2183 case 1: 2184 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 2185 sizeof(u32) * rdev->wiphy.n_cipher_suites, 2186 rdev->wiphy.cipher_suites)) 2187 goto nla_put_failure; 2188 2189 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 2190 rdev->wiphy.max_num_pmkids)) 2191 goto nla_put_failure; 2192 2193 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 2194 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 2195 goto nla_put_failure; 2196 2197 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 2198 rdev->wiphy.available_antennas_tx) || 2199 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 2200 rdev->wiphy.available_antennas_rx)) 2201 goto nla_put_failure; 2202 2203 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 2204 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 2205 rdev->wiphy.probe_resp_offload)) 2206 goto nla_put_failure; 2207 2208 if ((rdev->wiphy.available_antennas_tx || 2209 rdev->wiphy.available_antennas_rx) && 2210 rdev->ops->get_antenna) { 2211 u32 tx_ant = 0, rx_ant = 0; 2212 int res; 2213 2214 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 2215 if (!res) { 2216 if (nla_put_u32(msg, 2217 NL80211_ATTR_WIPHY_ANTENNA_TX, 2218 tx_ant) || 2219 nla_put_u32(msg, 2220 NL80211_ATTR_WIPHY_ANTENNA_RX, 2221 rx_ant)) 2222 goto nla_put_failure; 2223 } 2224 } 2225 2226 state->split_start++; 2227 if (state->split) 2228 break; 2229 fallthrough; 2230 case 2: 2231 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 2232 rdev->wiphy.interface_modes)) 2233 goto nla_put_failure; 2234 state->split_start++; 2235 if (state->split) 2236 break; 2237 fallthrough; 2238 case 3: 2239 nl_bands = nla_nest_start_noflag(msg, 2240 NL80211_ATTR_WIPHY_BANDS); 2241 if (!nl_bands) 2242 goto nla_put_failure; 2243 2244 for (band = state->band_start; 2245 band < NUM_NL80211_BANDS; band++) { 2246 struct ieee80211_supported_band *sband; 2247 2248 /* omit higher bands for ancient software */ 2249 if (band > NL80211_BAND_5GHZ && !state->split) 2250 break; 2251 2252 sband = rdev->wiphy.bands[band]; 2253 2254 if (!sband) 2255 continue; 2256 2257 nl_band = nla_nest_start_noflag(msg, band); 2258 if (!nl_band) 2259 goto nla_put_failure; 2260 2261 switch (state->chan_start) { 2262 case 0: 2263 if (nl80211_send_band_rateinfo(msg, sband, 2264 state->split)) 2265 goto nla_put_failure; 2266 state->chan_start++; 2267 if (state->split) 2268 break; 2269 fallthrough; 2270 default: 2271 /* add frequencies */ 2272 nl_freqs = nla_nest_start_noflag(msg, 2273 NL80211_BAND_ATTR_FREQS); 2274 if (!nl_freqs) 2275 goto nla_put_failure; 2276 2277 for (i = state->chan_start - 1; 2278 i < sband->n_channels; 2279 i++) { 2280 nl_freq = nla_nest_start_noflag(msg, 2281 i); 2282 if (!nl_freq) 2283 goto nla_put_failure; 2284 2285 chan = &sband->channels[i]; 2286 2287 if (nl80211_msg_put_channel( 2288 msg, &rdev->wiphy, chan, 2289 state->split)) 2290 goto nla_put_failure; 2291 2292 nla_nest_end(msg, nl_freq); 2293 if (state->split) 2294 break; 2295 } 2296 if (i < sband->n_channels) 2297 state->chan_start = i + 2; 2298 else 2299 state->chan_start = 0; 2300 nla_nest_end(msg, nl_freqs); 2301 } 2302 2303 nla_nest_end(msg, nl_band); 2304 2305 if (state->split) { 2306 /* start again here */ 2307 if (state->chan_start) 2308 band--; 2309 break; 2310 } 2311 } 2312 nla_nest_end(msg, nl_bands); 2313 2314 if (band < NUM_NL80211_BANDS) 2315 state->band_start = band + 1; 2316 else 2317 state->band_start = 0; 2318 2319 /* if bands & channels are done, continue outside */ 2320 if (state->band_start == 0 && state->chan_start == 0) 2321 state->split_start++; 2322 if (state->split) 2323 break; 2324 fallthrough; 2325 case 4: 2326 nl_cmds = nla_nest_start_noflag(msg, 2327 NL80211_ATTR_SUPPORTED_COMMANDS); 2328 if (!nl_cmds) 2329 goto nla_put_failure; 2330 2331 i = nl80211_add_commands_unsplit(rdev, msg); 2332 if (i < 0) 2333 goto nla_put_failure; 2334 if (state->split) { 2335 CMD(crit_proto_start, CRIT_PROTOCOL_START); 2336 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 2337 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 2338 CMD(channel_switch, CHANNEL_SWITCH); 2339 CMD(set_qos_map, SET_QOS_MAP); 2340 if (rdev->wiphy.features & 2341 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 2342 CMD(add_tx_ts, ADD_TX_TS); 2343 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 2344 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 2345 CMD(update_ft_ies, UPDATE_FT_IES); 2346 } 2347 #undef CMD 2348 2349 nla_nest_end(msg, nl_cmds); 2350 state->split_start++; 2351 if (state->split) 2352 break; 2353 fallthrough; 2354 case 5: 2355 if (rdev->ops->remain_on_channel && 2356 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 2357 nla_put_u32(msg, 2358 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 2359 rdev->wiphy.max_remain_on_channel_duration)) 2360 goto nla_put_failure; 2361 2362 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 2363 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 2364 goto nla_put_failure; 2365 2366 state->split_start++; 2367 if (state->split) 2368 break; 2369 fallthrough; 2370 case 6: 2371 #ifdef CONFIG_PM 2372 if (nl80211_send_wowlan(msg, rdev, state->split)) 2373 goto nla_put_failure; 2374 state->split_start++; 2375 if (state->split) 2376 break; 2377 #else 2378 state->split_start++; 2379 #endif 2380 fallthrough; 2381 case 7: 2382 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 2383 rdev->wiphy.software_iftypes)) 2384 goto nla_put_failure; 2385 2386 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 2387 state->split)) 2388 goto nla_put_failure; 2389 2390 state->split_start++; 2391 if (state->split) 2392 break; 2393 fallthrough; 2394 case 8: 2395 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 2396 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 2397 rdev->wiphy.ap_sme_capa)) 2398 goto nla_put_failure; 2399 2400 features = rdev->wiphy.features; 2401 /* 2402 * We can only add the per-channel limit information if the 2403 * dump is split, otherwise it makes it too big. Therefore 2404 * only advertise it in that case. 2405 */ 2406 if (state->split) 2407 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 2408 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 2409 goto nla_put_failure; 2410 2411 if (rdev->wiphy.ht_capa_mod_mask && 2412 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 2413 sizeof(*rdev->wiphy.ht_capa_mod_mask), 2414 rdev->wiphy.ht_capa_mod_mask)) 2415 goto nla_put_failure; 2416 2417 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 2418 rdev->wiphy.max_acl_mac_addrs && 2419 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 2420 rdev->wiphy.max_acl_mac_addrs)) 2421 goto nla_put_failure; 2422 2423 /* 2424 * Any information below this point is only available to 2425 * applications that can deal with it being split. This 2426 * helps ensure that newly added capabilities don't break 2427 * older tools by overrunning their buffers. 2428 * 2429 * We still increment split_start so that in the split 2430 * case we'll continue with more data in the next round, 2431 * but break unconditionally so unsplit data stops here. 2432 */ 2433 if (state->split) 2434 state->split_start++; 2435 else 2436 state->split_start = 0; 2437 break; 2438 case 9: 2439 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 2440 goto nla_put_failure; 2441 2442 if (nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 2443 rdev->wiphy.max_sched_scan_plans) || 2444 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 2445 rdev->wiphy.max_sched_scan_plan_interval) || 2446 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 2447 rdev->wiphy.max_sched_scan_plan_iterations)) 2448 goto nla_put_failure; 2449 2450 if (rdev->wiphy.extended_capabilities && 2451 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 2452 rdev->wiphy.extended_capabilities_len, 2453 rdev->wiphy.extended_capabilities) || 2454 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 2455 rdev->wiphy.extended_capabilities_len, 2456 rdev->wiphy.extended_capabilities_mask))) 2457 goto nla_put_failure; 2458 2459 if (rdev->wiphy.vht_capa_mod_mask && 2460 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 2461 sizeof(*rdev->wiphy.vht_capa_mod_mask), 2462 rdev->wiphy.vht_capa_mod_mask)) 2463 goto nla_put_failure; 2464 2465 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, 2466 rdev->wiphy.perm_addr)) 2467 goto nla_put_failure; 2468 2469 if (!is_zero_ether_addr(rdev->wiphy.addr_mask) && 2470 nla_put(msg, NL80211_ATTR_MAC_MASK, ETH_ALEN, 2471 rdev->wiphy.addr_mask)) 2472 goto nla_put_failure; 2473 2474 if (rdev->wiphy.n_addresses > 1) { 2475 void *attr; 2476 2477 attr = nla_nest_start(msg, NL80211_ATTR_MAC_ADDRS); 2478 if (!attr) 2479 goto nla_put_failure; 2480 2481 for (i = 0; i < rdev->wiphy.n_addresses; i++) 2482 if (nla_put(msg, i + 1, ETH_ALEN, 2483 rdev->wiphy.addresses[i].addr)) 2484 goto nla_put_failure; 2485 2486 nla_nest_end(msg, attr); 2487 } 2488 2489 state->split_start++; 2490 break; 2491 case 10: 2492 if (nl80211_send_coalesce(msg, rdev)) 2493 goto nla_put_failure; 2494 2495 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 2496 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 2497 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 2498 goto nla_put_failure; 2499 2500 if (rdev->wiphy.max_ap_assoc_sta && 2501 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 2502 rdev->wiphy.max_ap_assoc_sta)) 2503 goto nla_put_failure; 2504 2505 state->split_start++; 2506 break; 2507 case 11: 2508 if (rdev->wiphy.n_vendor_commands) { 2509 const struct nl80211_vendor_cmd_info *info; 2510 struct nlattr *nested; 2511 2512 nested = nla_nest_start_noflag(msg, 2513 NL80211_ATTR_VENDOR_DATA); 2514 if (!nested) 2515 goto nla_put_failure; 2516 2517 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 2518 info = &rdev->wiphy.vendor_commands[i].info; 2519 if (nla_put(msg, i + 1, sizeof(*info), info)) 2520 goto nla_put_failure; 2521 } 2522 nla_nest_end(msg, nested); 2523 } 2524 2525 if (rdev->wiphy.n_vendor_events) { 2526 const struct nl80211_vendor_cmd_info *info; 2527 struct nlattr *nested; 2528 2529 nested = nla_nest_start_noflag(msg, 2530 NL80211_ATTR_VENDOR_EVENTS); 2531 if (!nested) 2532 goto nla_put_failure; 2533 2534 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 2535 info = &rdev->wiphy.vendor_events[i]; 2536 if (nla_put(msg, i + 1, sizeof(*info), info)) 2537 goto nla_put_failure; 2538 } 2539 nla_nest_end(msg, nested); 2540 } 2541 state->split_start++; 2542 break; 2543 case 12: 2544 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 2545 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 2546 rdev->wiphy.max_num_csa_counters)) 2547 goto nla_put_failure; 2548 2549 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 2550 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 2551 goto nla_put_failure; 2552 2553 if (rdev->wiphy.max_sched_scan_reqs && 2554 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 2555 rdev->wiphy.max_sched_scan_reqs)) 2556 goto nla_put_failure; 2557 2558 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 2559 sizeof(rdev->wiphy.ext_features), 2560 rdev->wiphy.ext_features)) 2561 goto nla_put_failure; 2562 2563 if (rdev->wiphy.bss_select_support) { 2564 struct nlattr *nested; 2565 u32 bss_select_support = rdev->wiphy.bss_select_support; 2566 2567 nested = nla_nest_start_noflag(msg, 2568 NL80211_ATTR_BSS_SELECT); 2569 if (!nested) 2570 goto nla_put_failure; 2571 2572 i = 0; 2573 while (bss_select_support) { 2574 if ((bss_select_support & 1) && 2575 nla_put_flag(msg, i)) 2576 goto nla_put_failure; 2577 i++; 2578 bss_select_support >>= 1; 2579 } 2580 nla_nest_end(msg, nested); 2581 } 2582 2583 state->split_start++; 2584 break; 2585 case 13: 2586 if (rdev->wiphy.num_iftype_ext_capab && 2587 rdev->wiphy.iftype_ext_capab) { 2588 struct nlattr *nested_ext_capab, *nested; 2589 2590 nested = nla_nest_start_noflag(msg, 2591 NL80211_ATTR_IFTYPE_EXT_CAPA); 2592 if (!nested) 2593 goto nla_put_failure; 2594 2595 for (i = state->capa_start; 2596 i < rdev->wiphy.num_iftype_ext_capab; i++) { 2597 const struct wiphy_iftype_ext_capab *capab; 2598 2599 capab = &rdev->wiphy.iftype_ext_capab[i]; 2600 2601 nested_ext_capab = nla_nest_start_noflag(msg, 2602 i); 2603 if (!nested_ext_capab || 2604 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 2605 capab->iftype) || 2606 nla_put(msg, NL80211_ATTR_EXT_CAPA, 2607 capab->extended_capabilities_len, 2608 capab->extended_capabilities) || 2609 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 2610 capab->extended_capabilities_len, 2611 capab->extended_capabilities_mask)) 2612 goto nla_put_failure; 2613 2614 nla_nest_end(msg, nested_ext_capab); 2615 if (state->split) 2616 break; 2617 } 2618 nla_nest_end(msg, nested); 2619 if (i < rdev->wiphy.num_iftype_ext_capab) { 2620 state->capa_start = i + 1; 2621 break; 2622 } 2623 } 2624 2625 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 2626 rdev->wiphy.nan_supported_bands)) 2627 goto nla_put_failure; 2628 2629 if (wiphy_ext_feature_isset(&rdev->wiphy, 2630 NL80211_EXT_FEATURE_TXQS)) { 2631 struct cfg80211_txq_stats txqstats = {}; 2632 int res; 2633 2634 res = rdev_get_txq_stats(rdev, NULL, &txqstats); 2635 if (!res && 2636 !nl80211_put_txq_stats(msg, &txqstats, 2637 NL80211_ATTR_TXQ_STATS)) 2638 goto nla_put_failure; 2639 2640 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT, 2641 rdev->wiphy.txq_limit)) 2642 goto nla_put_failure; 2643 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT, 2644 rdev->wiphy.txq_memory_limit)) 2645 goto nla_put_failure; 2646 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM, 2647 rdev->wiphy.txq_quantum)) 2648 goto nla_put_failure; 2649 } 2650 2651 state->split_start++; 2652 break; 2653 case 14: 2654 if (nl80211_send_pmsr_capa(rdev, msg)) 2655 goto nla_put_failure; 2656 2657 state->split_start++; 2658 break; 2659 case 15: 2660 if (rdev->wiphy.akm_suites && 2661 nla_put(msg, NL80211_ATTR_AKM_SUITES, 2662 sizeof(u32) * rdev->wiphy.n_akm_suites, 2663 rdev->wiphy.akm_suites)) 2664 goto nla_put_failure; 2665 2666 if (nl80211_put_iftype_akm_suites(rdev, msg)) 2667 goto nla_put_failure; 2668 2669 if (nl80211_put_tid_config_support(rdev, msg)) 2670 goto nla_put_failure; 2671 2672 /* done */ 2673 state->split_start = 0; 2674 break; 2675 } 2676 finish: 2677 genlmsg_end(msg, hdr); 2678 return 0; 2679 2680 nla_put_failure: 2681 genlmsg_cancel(msg, hdr); 2682 return -EMSGSIZE; 2683 } 2684 2685 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 2686 struct netlink_callback *cb, 2687 struct nl80211_dump_wiphy_state *state) 2688 { 2689 struct nlattr **tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 2690 int ret; 2691 2692 if (!tb) 2693 return -ENOMEM; 2694 2695 ret = nlmsg_parse_deprecated(cb->nlh, 2696 GENL_HDRLEN + nl80211_fam.hdrsize, 2697 tb, nl80211_fam.maxattr, 2698 nl80211_policy, NULL); 2699 /* ignore parse errors for backward compatibility */ 2700 if (ret) { 2701 ret = 0; 2702 goto out; 2703 } 2704 2705 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 2706 if (tb[NL80211_ATTR_WIPHY]) 2707 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 2708 if (tb[NL80211_ATTR_WDEV]) 2709 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 2710 if (tb[NL80211_ATTR_IFINDEX]) { 2711 struct net_device *netdev; 2712 struct cfg80211_registered_device *rdev; 2713 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2714 2715 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 2716 if (!netdev) { 2717 ret = -ENODEV; 2718 goto out; 2719 } 2720 if (netdev->ieee80211_ptr) { 2721 rdev = wiphy_to_rdev( 2722 netdev->ieee80211_ptr->wiphy); 2723 state->filter_wiphy = rdev->wiphy_idx; 2724 } 2725 } 2726 2727 ret = 0; 2728 out: 2729 kfree(tb); 2730 return ret; 2731 } 2732 2733 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 2734 { 2735 int idx = 0, ret; 2736 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 2737 struct cfg80211_registered_device *rdev; 2738 2739 rtnl_lock(); 2740 if (!state) { 2741 state = kzalloc(sizeof(*state), GFP_KERNEL); 2742 if (!state) { 2743 rtnl_unlock(); 2744 return -ENOMEM; 2745 } 2746 state->filter_wiphy = -1; 2747 ret = nl80211_dump_wiphy_parse(skb, cb, state); 2748 if (ret) { 2749 kfree(state); 2750 rtnl_unlock(); 2751 return ret; 2752 } 2753 cb->args[0] = (long)state; 2754 } 2755 2756 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2757 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2758 continue; 2759 if (++idx <= state->start) 2760 continue; 2761 if (state->filter_wiphy != -1 && 2762 state->filter_wiphy != rdev->wiphy_idx) 2763 continue; 2764 /* attempt to fit multiple wiphy data chunks into the skb */ 2765 do { 2766 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 2767 skb, 2768 NETLINK_CB(cb->skb).portid, 2769 cb->nlh->nlmsg_seq, 2770 NLM_F_MULTI, state); 2771 if (ret < 0) { 2772 /* 2773 * If sending the wiphy data didn't fit (ENOBUFS 2774 * or EMSGSIZE returned), this SKB is still 2775 * empty (so it's not too big because another 2776 * wiphy dataset is already in the skb) and 2777 * we've not tried to adjust the dump allocation 2778 * yet ... then adjust the alloc size to be 2779 * bigger, and return 1 but with the empty skb. 2780 * This results in an empty message being RX'ed 2781 * in userspace, but that is ignored. 2782 * 2783 * We can then retry with the larger buffer. 2784 */ 2785 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 2786 !skb->len && !state->split && 2787 cb->min_dump_alloc < 4096) { 2788 cb->min_dump_alloc = 4096; 2789 state->split_start = 0; 2790 rtnl_unlock(); 2791 return 1; 2792 } 2793 idx--; 2794 break; 2795 } 2796 } while (state->split_start > 0); 2797 break; 2798 } 2799 rtnl_unlock(); 2800 2801 state->start = idx; 2802 2803 return skb->len; 2804 } 2805 2806 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 2807 { 2808 kfree((void *)cb->args[0]); 2809 return 0; 2810 } 2811 2812 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 2813 { 2814 struct sk_buff *msg; 2815 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2816 struct nl80211_dump_wiphy_state state = {}; 2817 2818 msg = nlmsg_new(4096, GFP_KERNEL); 2819 if (!msg) 2820 return -ENOMEM; 2821 2822 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 2823 info->snd_portid, info->snd_seq, 0, 2824 &state) < 0) { 2825 nlmsg_free(msg); 2826 return -ENOBUFS; 2827 } 2828 2829 return genlmsg_reply(msg, info); 2830 } 2831 2832 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 2833 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 2834 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 2835 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 2836 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 2837 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 2838 }; 2839 2840 static int parse_txq_params(struct nlattr *tb[], 2841 struct ieee80211_txq_params *txq_params) 2842 { 2843 u8 ac; 2844 2845 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 2846 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 2847 !tb[NL80211_TXQ_ATTR_AIFS]) 2848 return -EINVAL; 2849 2850 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 2851 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 2852 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 2853 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 2854 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 2855 2856 if (ac >= NL80211_NUM_ACS) 2857 return -EINVAL; 2858 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS); 2859 return 0; 2860 } 2861 2862 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 2863 { 2864 /* 2865 * You can only set the channel explicitly for some interfaces, 2866 * most have their channel managed via their respective 2867 * "establish a connection" command (connect, join, ...) 2868 * 2869 * For AP/GO and mesh mode, the channel can be set with the 2870 * channel userspace API, but is only stored and passed to the 2871 * low-level driver when the AP starts or the mesh is joined. 2872 * This is for backward compatibility, userspace can also give 2873 * the channel in the start-ap or join-mesh commands instead. 2874 * 2875 * Monitors are special as they are normally slaved to 2876 * whatever else is going on, so they have their own special 2877 * operation to set the monitor channel if possible. 2878 */ 2879 return !wdev || 2880 wdev->iftype == NL80211_IFTYPE_AP || 2881 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2882 wdev->iftype == NL80211_IFTYPE_MONITOR || 2883 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2884 } 2885 2886 int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2887 struct genl_info *info, 2888 struct cfg80211_chan_def *chandef) 2889 { 2890 struct netlink_ext_ack *extack = info->extack; 2891 struct nlattr **attrs = info->attrs; 2892 u32 control_freq; 2893 2894 if (!attrs[NL80211_ATTR_WIPHY_FREQ]) 2895 return -EINVAL; 2896 2897 control_freq = MHZ_TO_KHZ( 2898 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 2899 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 2900 control_freq += 2901 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 2902 2903 memset(chandef, 0, sizeof(*chandef)); 2904 chandef->chan = ieee80211_get_channel_khz(&rdev->wiphy, control_freq); 2905 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2906 chandef->center_freq1 = KHZ_TO_MHZ(control_freq); 2907 chandef->freq1_offset = control_freq % 1000; 2908 chandef->center_freq2 = 0; 2909 2910 /* Primary channel not allowed */ 2911 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) { 2912 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ], 2913 "Channel is disabled"); 2914 return -EINVAL; 2915 } 2916 2917 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2918 enum nl80211_channel_type chantype; 2919 2920 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2921 2922 switch (chantype) { 2923 case NL80211_CHAN_NO_HT: 2924 case NL80211_CHAN_HT20: 2925 case NL80211_CHAN_HT40PLUS: 2926 case NL80211_CHAN_HT40MINUS: 2927 cfg80211_chandef_create(chandef, chandef->chan, 2928 chantype); 2929 /* user input for center_freq is incorrect */ 2930 if (attrs[NL80211_ATTR_CENTER_FREQ1] && 2931 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) { 2932 NL_SET_ERR_MSG_ATTR(extack, 2933 attrs[NL80211_ATTR_CENTER_FREQ1], 2934 "bad center frequency 1"); 2935 return -EINVAL; 2936 } 2937 /* center_freq2 must be zero */ 2938 if (attrs[NL80211_ATTR_CENTER_FREQ2] && 2939 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) { 2940 NL_SET_ERR_MSG_ATTR(extack, 2941 attrs[NL80211_ATTR_CENTER_FREQ2], 2942 "center frequency 2 can't be used"); 2943 return -EINVAL; 2944 } 2945 break; 2946 default: 2947 NL_SET_ERR_MSG_ATTR(extack, 2948 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE], 2949 "invalid channel type"); 2950 return -EINVAL; 2951 } 2952 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2953 chandef->width = 2954 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2955 if (attrs[NL80211_ATTR_CENTER_FREQ1]) { 2956 chandef->center_freq1 = 2957 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]); 2958 if (attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]) 2959 chandef->freq1_offset = nla_get_u32( 2960 attrs[NL80211_ATTR_CENTER_FREQ1_OFFSET]); 2961 else 2962 chandef->freq1_offset = 0; 2963 } 2964 if (attrs[NL80211_ATTR_CENTER_FREQ2]) 2965 chandef->center_freq2 = 2966 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]); 2967 } 2968 2969 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) { 2970 chandef->edmg.channels = 2971 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]); 2972 2973 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]) 2974 chandef->edmg.bw_config = 2975 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]); 2976 } else { 2977 chandef->edmg.bw_config = 0; 2978 chandef->edmg.channels = 0; 2979 } 2980 2981 if (!cfg80211_chandef_valid(chandef)) { 2982 NL_SET_ERR_MSG(extack, "invalid channel definition"); 2983 return -EINVAL; 2984 } 2985 2986 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2987 IEEE80211_CHAN_DISABLED)) { 2988 NL_SET_ERR_MSG(extack, "(extension) channel is disabled"); 2989 return -EINVAL; 2990 } 2991 2992 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2993 chandef->width == NL80211_CHAN_WIDTH_10) && 2994 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) { 2995 NL_SET_ERR_MSG(extack, "5/10 MHz not supported"); 2996 return -EINVAL; 2997 } 2998 2999 return 0; 3000 } 3001 3002 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 3003 struct net_device *dev, 3004 struct genl_info *info) 3005 { 3006 struct cfg80211_chan_def chandef; 3007 int result; 3008 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 3009 struct wireless_dev *wdev = NULL; 3010 3011 if (dev) 3012 wdev = dev->ieee80211_ptr; 3013 if (!nl80211_can_set_dev_channel(wdev)) 3014 return -EOPNOTSUPP; 3015 if (wdev) 3016 iftype = wdev->iftype; 3017 3018 result = nl80211_parse_chandef(rdev, info, &chandef); 3019 if (result) 3020 return result; 3021 3022 switch (iftype) { 3023 case NL80211_IFTYPE_AP: 3024 case NL80211_IFTYPE_P2P_GO: 3025 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 3026 iftype)) { 3027 result = -EINVAL; 3028 break; 3029 } 3030 if (wdev->beacon_interval) { 3031 if (!dev || !rdev->ops->set_ap_chanwidth || 3032 !(rdev->wiphy.features & 3033 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 3034 result = -EBUSY; 3035 break; 3036 } 3037 3038 /* Only allow dynamic channel width changes */ 3039 if (chandef.chan != wdev->preset_chandef.chan) { 3040 result = -EBUSY; 3041 break; 3042 } 3043 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 3044 if (result) 3045 break; 3046 } 3047 wdev->preset_chandef = chandef; 3048 result = 0; 3049 break; 3050 case NL80211_IFTYPE_MESH_POINT: 3051 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 3052 break; 3053 case NL80211_IFTYPE_MONITOR: 3054 result = cfg80211_set_monitor_channel(rdev, &chandef); 3055 break; 3056 default: 3057 result = -EINVAL; 3058 } 3059 3060 return result; 3061 } 3062 3063 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 3064 { 3065 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3066 struct net_device *netdev = info->user_ptr[1]; 3067 3068 return __nl80211_set_channel(rdev, netdev, info); 3069 } 3070 3071 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 3072 { 3073 struct cfg80211_registered_device *rdev; 3074 struct net_device *netdev = NULL; 3075 struct wireless_dev *wdev; 3076 int result = 0, rem_txq_params = 0; 3077 struct nlattr *nl_txq_params; 3078 u32 changed; 3079 u8 retry_short = 0, retry_long = 0; 3080 u32 frag_threshold = 0, rts_threshold = 0; 3081 u8 coverage_class = 0; 3082 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0; 3083 3084 ASSERT_RTNL(); 3085 3086 /* 3087 * Try to find the wiphy and netdev. Normally this 3088 * function shouldn't need the netdev, but this is 3089 * done for backward compatibility -- previously 3090 * setting the channel was done per wiphy, but now 3091 * it is per netdev. Previous userland like hostapd 3092 * also passed a netdev to set_wiphy, so that it is 3093 * possible to let that go to the right netdev! 3094 */ 3095 3096 if (info->attrs[NL80211_ATTR_IFINDEX]) { 3097 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 3098 3099 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 3100 if (netdev && netdev->ieee80211_ptr) 3101 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 3102 else 3103 netdev = NULL; 3104 } 3105 3106 if (!netdev) { 3107 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 3108 info->attrs); 3109 if (IS_ERR(rdev)) 3110 return PTR_ERR(rdev); 3111 wdev = NULL; 3112 netdev = NULL; 3113 result = 0; 3114 } else 3115 wdev = netdev->ieee80211_ptr; 3116 3117 /* 3118 * end workaround code, by now the rdev is available 3119 * and locked, and wdev may or may not be NULL. 3120 */ 3121 3122 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 3123 result = cfg80211_dev_rename( 3124 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 3125 3126 if (result) 3127 return result; 3128 3129 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 3130 struct ieee80211_txq_params txq_params; 3131 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 3132 3133 if (!rdev->ops->set_txq_params) 3134 return -EOPNOTSUPP; 3135 3136 if (!netdev) 3137 return -EINVAL; 3138 3139 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3140 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3141 return -EINVAL; 3142 3143 if (!netif_running(netdev)) 3144 return -ENETDOWN; 3145 3146 nla_for_each_nested(nl_txq_params, 3147 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 3148 rem_txq_params) { 3149 result = nla_parse_nested_deprecated(tb, 3150 NL80211_TXQ_ATTR_MAX, 3151 nl_txq_params, 3152 txq_params_policy, 3153 info->extack); 3154 if (result) 3155 return result; 3156 result = parse_txq_params(tb, &txq_params); 3157 if (result) 3158 return result; 3159 3160 result = rdev_set_txq_params(rdev, netdev, 3161 &txq_params); 3162 if (result) 3163 return result; 3164 } 3165 } 3166 3167 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3168 result = __nl80211_set_channel( 3169 rdev, 3170 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 3171 info); 3172 if (result) 3173 return result; 3174 } 3175 3176 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 3177 struct wireless_dev *txp_wdev = wdev; 3178 enum nl80211_tx_power_setting type; 3179 int idx, mbm = 0; 3180 3181 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 3182 txp_wdev = NULL; 3183 3184 if (!rdev->ops->set_tx_power) 3185 return -EOPNOTSUPP; 3186 3187 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 3188 type = nla_get_u32(info->attrs[idx]); 3189 3190 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 3191 (type != NL80211_TX_POWER_AUTOMATIC)) 3192 return -EINVAL; 3193 3194 if (type != NL80211_TX_POWER_AUTOMATIC) { 3195 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 3196 mbm = nla_get_u32(info->attrs[idx]); 3197 } 3198 3199 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 3200 if (result) 3201 return result; 3202 } 3203 3204 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 3205 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 3206 u32 tx_ant, rx_ant; 3207 3208 if ((!rdev->wiphy.available_antennas_tx && 3209 !rdev->wiphy.available_antennas_rx) || 3210 !rdev->ops->set_antenna) 3211 return -EOPNOTSUPP; 3212 3213 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 3214 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 3215 3216 /* reject antenna configurations which don't match the 3217 * available antenna masks, except for the "all" mask */ 3218 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 3219 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 3220 return -EINVAL; 3221 3222 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 3223 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 3224 3225 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 3226 if (result) 3227 return result; 3228 } 3229 3230 changed = 0; 3231 3232 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 3233 retry_short = nla_get_u8( 3234 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 3235 3236 changed |= WIPHY_PARAM_RETRY_SHORT; 3237 } 3238 3239 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 3240 retry_long = nla_get_u8( 3241 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 3242 3243 changed |= WIPHY_PARAM_RETRY_LONG; 3244 } 3245 3246 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 3247 frag_threshold = nla_get_u32( 3248 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 3249 if (frag_threshold < 256) 3250 return -EINVAL; 3251 3252 if (frag_threshold != (u32) -1) { 3253 /* 3254 * Fragments (apart from the last one) are required to 3255 * have even length. Make the fragmentation code 3256 * simpler by stripping LSB should someone try to use 3257 * odd threshold value. 3258 */ 3259 frag_threshold &= ~0x1; 3260 } 3261 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 3262 } 3263 3264 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 3265 rts_threshold = nla_get_u32( 3266 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 3267 changed |= WIPHY_PARAM_RTS_THRESHOLD; 3268 } 3269 3270 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 3271 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 3272 return -EINVAL; 3273 3274 coverage_class = nla_get_u8( 3275 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 3276 changed |= WIPHY_PARAM_COVERAGE_CLASS; 3277 } 3278 3279 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 3280 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 3281 return -EOPNOTSUPP; 3282 3283 changed |= WIPHY_PARAM_DYN_ACK; 3284 } 3285 3286 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) { 3287 if (!wiphy_ext_feature_isset(&rdev->wiphy, 3288 NL80211_EXT_FEATURE_TXQS)) 3289 return -EOPNOTSUPP; 3290 txq_limit = nla_get_u32( 3291 info->attrs[NL80211_ATTR_TXQ_LIMIT]); 3292 changed |= WIPHY_PARAM_TXQ_LIMIT; 3293 } 3294 3295 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) { 3296 if (!wiphy_ext_feature_isset(&rdev->wiphy, 3297 NL80211_EXT_FEATURE_TXQS)) 3298 return -EOPNOTSUPP; 3299 txq_memory_limit = nla_get_u32( 3300 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]); 3301 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT; 3302 } 3303 3304 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) { 3305 if (!wiphy_ext_feature_isset(&rdev->wiphy, 3306 NL80211_EXT_FEATURE_TXQS)) 3307 return -EOPNOTSUPP; 3308 txq_quantum = nla_get_u32( 3309 info->attrs[NL80211_ATTR_TXQ_QUANTUM]); 3310 changed |= WIPHY_PARAM_TXQ_QUANTUM; 3311 } 3312 3313 if (changed) { 3314 u8 old_retry_short, old_retry_long; 3315 u32 old_frag_threshold, old_rts_threshold; 3316 u8 old_coverage_class; 3317 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum; 3318 3319 if (!rdev->ops->set_wiphy_params) 3320 return -EOPNOTSUPP; 3321 3322 old_retry_short = rdev->wiphy.retry_short; 3323 old_retry_long = rdev->wiphy.retry_long; 3324 old_frag_threshold = rdev->wiphy.frag_threshold; 3325 old_rts_threshold = rdev->wiphy.rts_threshold; 3326 old_coverage_class = rdev->wiphy.coverage_class; 3327 old_txq_limit = rdev->wiphy.txq_limit; 3328 old_txq_memory_limit = rdev->wiphy.txq_memory_limit; 3329 old_txq_quantum = rdev->wiphy.txq_quantum; 3330 3331 if (changed & WIPHY_PARAM_RETRY_SHORT) 3332 rdev->wiphy.retry_short = retry_short; 3333 if (changed & WIPHY_PARAM_RETRY_LONG) 3334 rdev->wiphy.retry_long = retry_long; 3335 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 3336 rdev->wiphy.frag_threshold = frag_threshold; 3337 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 3338 rdev->wiphy.rts_threshold = rts_threshold; 3339 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 3340 rdev->wiphy.coverage_class = coverage_class; 3341 if (changed & WIPHY_PARAM_TXQ_LIMIT) 3342 rdev->wiphy.txq_limit = txq_limit; 3343 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT) 3344 rdev->wiphy.txq_memory_limit = txq_memory_limit; 3345 if (changed & WIPHY_PARAM_TXQ_QUANTUM) 3346 rdev->wiphy.txq_quantum = txq_quantum; 3347 3348 result = rdev_set_wiphy_params(rdev, changed); 3349 if (result) { 3350 rdev->wiphy.retry_short = old_retry_short; 3351 rdev->wiphy.retry_long = old_retry_long; 3352 rdev->wiphy.frag_threshold = old_frag_threshold; 3353 rdev->wiphy.rts_threshold = old_rts_threshold; 3354 rdev->wiphy.coverage_class = old_coverage_class; 3355 rdev->wiphy.txq_limit = old_txq_limit; 3356 rdev->wiphy.txq_memory_limit = old_txq_memory_limit; 3357 rdev->wiphy.txq_quantum = old_txq_quantum; 3358 return result; 3359 } 3360 } 3361 return 0; 3362 } 3363 3364 static int nl80211_send_chandef(struct sk_buff *msg, 3365 const struct cfg80211_chan_def *chandef) 3366 { 3367 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 3368 return -EINVAL; 3369 3370 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 3371 chandef->chan->center_freq)) 3372 return -ENOBUFS; 3373 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, 3374 chandef->chan->freq_offset)) 3375 return -ENOBUFS; 3376 switch (chandef->width) { 3377 case NL80211_CHAN_WIDTH_20_NOHT: 3378 case NL80211_CHAN_WIDTH_20: 3379 case NL80211_CHAN_WIDTH_40: 3380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 3381 cfg80211_get_chandef_type(chandef))) 3382 return -ENOBUFS; 3383 break; 3384 default: 3385 break; 3386 } 3387 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 3388 return -ENOBUFS; 3389 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 3390 return -ENOBUFS; 3391 if (chandef->center_freq2 && 3392 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 3393 return -ENOBUFS; 3394 return 0; 3395 } 3396 3397 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 3398 struct cfg80211_registered_device *rdev, 3399 struct wireless_dev *wdev, 3400 enum nl80211_commands cmd) 3401 { 3402 struct net_device *dev = wdev->netdev; 3403 void *hdr; 3404 3405 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 3406 cmd != NL80211_CMD_DEL_INTERFACE && 3407 cmd != NL80211_CMD_SET_INTERFACE); 3408 3409 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3410 if (!hdr) 3411 return -1; 3412 3413 if (dev && 3414 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3415 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 3416 goto nla_put_failure; 3417 3418 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 3419 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 3420 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 3421 NL80211_ATTR_PAD) || 3422 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 3423 nla_put_u32(msg, NL80211_ATTR_GENERATION, 3424 rdev->devlist_generation ^ 3425 (cfg80211_rdev_list_generation << 2)) || 3426 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr)) 3427 goto nla_put_failure; 3428 3429 if (rdev->ops->get_channel) { 3430 int ret; 3431 struct cfg80211_chan_def chandef = {}; 3432 3433 ret = rdev_get_channel(rdev, wdev, &chandef); 3434 if (ret == 0) { 3435 if (nl80211_send_chandef(msg, &chandef)) 3436 goto nla_put_failure; 3437 } 3438 } 3439 3440 if (rdev->ops->get_tx_power) { 3441 int dbm, ret; 3442 3443 ret = rdev_get_tx_power(rdev, wdev, &dbm); 3444 if (ret == 0 && 3445 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 3446 DBM_TO_MBM(dbm))) 3447 goto nla_put_failure; 3448 } 3449 3450 wdev_lock(wdev); 3451 switch (wdev->iftype) { 3452 case NL80211_IFTYPE_AP: 3453 if (wdev->ssid_len && 3454 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 3455 goto nla_put_failure_locked; 3456 break; 3457 case NL80211_IFTYPE_STATION: 3458 case NL80211_IFTYPE_P2P_CLIENT: 3459 case NL80211_IFTYPE_ADHOC: { 3460 const u8 *ssid_ie; 3461 if (!wdev->current_bss) 3462 break; 3463 rcu_read_lock(); 3464 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, 3465 WLAN_EID_SSID); 3466 if (ssid_ie && 3467 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2)) 3468 goto nla_put_failure_rcu_locked; 3469 rcu_read_unlock(); 3470 break; 3471 } 3472 default: 3473 /* nothing */ 3474 break; 3475 } 3476 wdev_unlock(wdev); 3477 3478 if (rdev->ops->get_txq_stats) { 3479 struct cfg80211_txq_stats txqstats = {}; 3480 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats); 3481 3482 if (ret == 0 && 3483 !nl80211_put_txq_stats(msg, &txqstats, 3484 NL80211_ATTR_TXQ_STATS)) 3485 goto nla_put_failure; 3486 } 3487 3488 genlmsg_end(msg, hdr); 3489 return 0; 3490 3491 nla_put_failure_rcu_locked: 3492 rcu_read_unlock(); 3493 nla_put_failure_locked: 3494 wdev_unlock(wdev); 3495 nla_put_failure: 3496 genlmsg_cancel(msg, hdr); 3497 return -EMSGSIZE; 3498 } 3499 3500 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 3501 { 3502 int wp_idx = 0; 3503 int if_idx = 0; 3504 int wp_start = cb->args[0]; 3505 int if_start = cb->args[1]; 3506 int filter_wiphy = -1; 3507 struct cfg80211_registered_device *rdev; 3508 struct wireless_dev *wdev; 3509 int ret; 3510 3511 rtnl_lock(); 3512 if (!cb->args[2]) { 3513 struct nl80211_dump_wiphy_state state = { 3514 .filter_wiphy = -1, 3515 }; 3516 3517 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 3518 if (ret) 3519 goto out_unlock; 3520 3521 filter_wiphy = state.filter_wiphy; 3522 3523 /* 3524 * if filtering, set cb->args[2] to +1 since 0 is the default 3525 * value needed to determine that parsing is necessary. 3526 */ 3527 if (filter_wiphy >= 0) 3528 cb->args[2] = filter_wiphy + 1; 3529 else 3530 cb->args[2] = -1; 3531 } else if (cb->args[2] > 0) { 3532 filter_wiphy = cb->args[2] - 1; 3533 } 3534 3535 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 3536 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 3537 continue; 3538 if (wp_idx < wp_start) { 3539 wp_idx++; 3540 continue; 3541 } 3542 3543 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 3544 continue; 3545 3546 if_idx = 0; 3547 3548 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 3549 if (if_idx < if_start) { 3550 if_idx++; 3551 continue; 3552 } 3553 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 3554 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3555 rdev, wdev, 3556 NL80211_CMD_NEW_INTERFACE) < 0) { 3557 goto out; 3558 } 3559 if_idx++; 3560 } 3561 3562 wp_idx++; 3563 } 3564 out: 3565 cb->args[0] = wp_idx; 3566 cb->args[1] = if_idx; 3567 3568 ret = skb->len; 3569 out_unlock: 3570 rtnl_unlock(); 3571 3572 return ret; 3573 } 3574 3575 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 3576 { 3577 struct sk_buff *msg; 3578 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3579 struct wireless_dev *wdev = info->user_ptr[1]; 3580 3581 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3582 if (!msg) 3583 return -ENOMEM; 3584 3585 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3586 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) { 3587 nlmsg_free(msg); 3588 return -ENOBUFS; 3589 } 3590 3591 return genlmsg_reply(msg, info); 3592 } 3593 3594 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 3595 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 3596 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 3597 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 3598 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 3599 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 3600 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 3601 }; 3602 3603 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 3604 { 3605 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 3606 int flag; 3607 3608 *mntrflags = 0; 3609 3610 if (!nla) 3611 return -EINVAL; 3612 3613 if (nla_parse_nested_deprecated(flags, NL80211_MNTR_FLAG_MAX, nla, mntr_flags_policy, NULL)) 3614 return -EINVAL; 3615 3616 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 3617 if (flags[flag]) 3618 *mntrflags |= (1<<flag); 3619 3620 *mntrflags |= MONITOR_FLAG_CHANGED; 3621 3622 return 0; 3623 } 3624 3625 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 3626 enum nl80211_iftype type, 3627 struct genl_info *info, 3628 struct vif_params *params) 3629 { 3630 bool change = false; 3631 int err; 3632 3633 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 3634 if (type != NL80211_IFTYPE_MONITOR) 3635 return -EINVAL; 3636 3637 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 3638 ¶ms->flags); 3639 if (err) 3640 return err; 3641 3642 change = true; 3643 } 3644 3645 if (params->flags & MONITOR_FLAG_ACTIVE && 3646 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 3647 return -EOPNOTSUPP; 3648 3649 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 3650 const u8 *mumimo_groups; 3651 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3652 3653 if (type != NL80211_IFTYPE_MONITOR) 3654 return -EINVAL; 3655 3656 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3657 return -EOPNOTSUPP; 3658 3659 mumimo_groups = 3660 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 3661 3662 /* bits 0 and 63 are reserved and must be zero */ 3663 if ((mumimo_groups[0] & BIT(0)) || 3664 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 3665 return -EINVAL; 3666 3667 params->vht_mumimo_groups = mumimo_groups; 3668 change = true; 3669 } 3670 3671 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 3672 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3673 3674 if (type != NL80211_IFTYPE_MONITOR) 3675 return -EINVAL; 3676 3677 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3678 return -EOPNOTSUPP; 3679 3680 params->vht_mumimo_follow_addr = 3681 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 3682 change = true; 3683 } 3684 3685 return change ? 1 : 0; 3686 } 3687 3688 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 3689 struct net_device *netdev, u8 use_4addr, 3690 enum nl80211_iftype iftype) 3691 { 3692 if (!use_4addr) { 3693 if (netdev && netif_is_bridge_port(netdev)) 3694 return -EBUSY; 3695 return 0; 3696 } 3697 3698 switch (iftype) { 3699 case NL80211_IFTYPE_AP_VLAN: 3700 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 3701 return 0; 3702 break; 3703 case NL80211_IFTYPE_STATION: 3704 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 3705 return 0; 3706 break; 3707 default: 3708 break; 3709 } 3710 3711 return -EOPNOTSUPP; 3712 } 3713 3714 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 3715 { 3716 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3717 struct vif_params params; 3718 int err; 3719 enum nl80211_iftype otype, ntype; 3720 struct net_device *dev = info->user_ptr[1]; 3721 bool change = false; 3722 3723 memset(¶ms, 0, sizeof(params)); 3724 3725 otype = ntype = dev->ieee80211_ptr->iftype; 3726 3727 if (info->attrs[NL80211_ATTR_IFTYPE]) { 3728 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3729 if (otype != ntype) 3730 change = true; 3731 } 3732 3733 if (info->attrs[NL80211_ATTR_MESH_ID]) { 3734 struct wireless_dev *wdev = dev->ieee80211_ptr; 3735 3736 if (ntype != NL80211_IFTYPE_MESH_POINT) 3737 return -EINVAL; 3738 if (netif_running(dev)) 3739 return -EBUSY; 3740 3741 wdev_lock(wdev); 3742 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3743 IEEE80211_MAX_MESH_ID_LEN); 3744 wdev->mesh_id_up_len = 3745 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3746 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3747 wdev->mesh_id_up_len); 3748 wdev_unlock(wdev); 3749 } 3750 3751 if (info->attrs[NL80211_ATTR_4ADDR]) { 3752 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3753 change = true; 3754 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 3755 if (err) 3756 return err; 3757 } else { 3758 params.use_4addr = -1; 3759 } 3760 3761 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 3762 if (err < 0) 3763 return err; 3764 if (err > 0) 3765 change = true; 3766 3767 if (change) 3768 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 3769 else 3770 err = 0; 3771 3772 if (!err && params.use_4addr != -1) 3773 dev->ieee80211_ptr->use_4addr = params.use_4addr; 3774 3775 if (change && !err) { 3776 struct wireless_dev *wdev = dev->ieee80211_ptr; 3777 3778 nl80211_notify_iface(rdev, wdev, NL80211_CMD_SET_INTERFACE); 3779 } 3780 3781 return err; 3782 } 3783 3784 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 3785 { 3786 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3787 struct vif_params params; 3788 struct wireless_dev *wdev; 3789 struct sk_buff *msg; 3790 int err; 3791 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 3792 3793 /* to avoid failing a new interface creation due to pending removal */ 3794 cfg80211_destroy_ifaces(rdev); 3795 3796 memset(¶ms, 0, sizeof(params)); 3797 3798 if (!info->attrs[NL80211_ATTR_IFNAME]) 3799 return -EINVAL; 3800 3801 if (info->attrs[NL80211_ATTR_IFTYPE]) 3802 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3803 3804 if (!rdev->ops->add_virtual_intf) 3805 return -EOPNOTSUPP; 3806 3807 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 3808 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 3809 info->attrs[NL80211_ATTR_MAC]) { 3810 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 3811 ETH_ALEN); 3812 if (!is_valid_ether_addr(params.macaddr)) 3813 return -EADDRNOTAVAIL; 3814 } 3815 3816 if (info->attrs[NL80211_ATTR_4ADDR]) { 3817 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3818 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 3819 if (err) 3820 return err; 3821 } 3822 3823 if (!cfg80211_iftype_allowed(&rdev->wiphy, type, params.use_4addr, 0)) 3824 return -EOPNOTSUPP; 3825 3826 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 3827 if (err < 0) 3828 return err; 3829 3830 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3831 if (!msg) 3832 return -ENOMEM; 3833 3834 wdev = rdev_add_virtual_intf(rdev, 3835 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 3836 NET_NAME_USER, type, ¶ms); 3837 if (WARN_ON(!wdev)) { 3838 nlmsg_free(msg); 3839 return -EPROTO; 3840 } else if (IS_ERR(wdev)) { 3841 nlmsg_free(msg); 3842 return PTR_ERR(wdev); 3843 } 3844 3845 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 3846 wdev->owner_nlportid = info->snd_portid; 3847 3848 switch (type) { 3849 case NL80211_IFTYPE_MESH_POINT: 3850 if (!info->attrs[NL80211_ATTR_MESH_ID]) 3851 break; 3852 wdev_lock(wdev); 3853 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3854 IEEE80211_MAX_MESH_ID_LEN); 3855 wdev->mesh_id_up_len = 3856 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3857 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3858 wdev->mesh_id_up_len); 3859 wdev_unlock(wdev); 3860 break; 3861 case NL80211_IFTYPE_NAN: 3862 case NL80211_IFTYPE_P2P_DEVICE: 3863 /* 3864 * P2P Device and NAN do not have a netdev, so don't go 3865 * through the netdev notifier and must be added here 3866 */ 3867 cfg80211_init_wdev(wdev); 3868 cfg80211_register_wdev(rdev, wdev); 3869 break; 3870 default: 3871 break; 3872 } 3873 3874 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3875 rdev, wdev, NL80211_CMD_NEW_INTERFACE) < 0) { 3876 nlmsg_free(msg); 3877 return -ENOBUFS; 3878 } 3879 3880 return genlmsg_reply(msg, info); 3881 } 3882 3883 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 3884 { 3885 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3886 struct wireless_dev *wdev = info->user_ptr[1]; 3887 3888 if (!rdev->ops->del_virtual_intf) 3889 return -EOPNOTSUPP; 3890 3891 /* 3892 * If we remove a wireless device without a netdev then clear 3893 * user_ptr[1] so that nl80211_post_doit won't dereference it 3894 * to check if it needs to do dev_put(). Otherwise it crashes 3895 * since the wdev has been freed, unlike with a netdev where 3896 * we need the dev_put() for the netdev to really be freed. 3897 */ 3898 if (!wdev->netdev) 3899 info->user_ptr[1] = NULL; 3900 3901 return rdev_del_virtual_intf(rdev, wdev); 3902 } 3903 3904 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 3905 { 3906 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3907 struct net_device *dev = info->user_ptr[1]; 3908 u16 noack_map; 3909 3910 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 3911 return -EINVAL; 3912 3913 if (!rdev->ops->set_noack_map) 3914 return -EOPNOTSUPP; 3915 3916 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 3917 3918 return rdev_set_noack_map(rdev, dev, noack_map); 3919 } 3920 3921 struct get_key_cookie { 3922 struct sk_buff *msg; 3923 int error; 3924 int idx; 3925 }; 3926 3927 static void get_key_callback(void *c, struct key_params *params) 3928 { 3929 struct nlattr *key; 3930 struct get_key_cookie *cookie = c; 3931 3932 if ((params->key && 3933 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 3934 params->key_len, params->key)) || 3935 (params->seq && 3936 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 3937 params->seq_len, params->seq)) || 3938 (params->cipher && 3939 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 3940 params->cipher))) 3941 goto nla_put_failure; 3942 3943 key = nla_nest_start_noflag(cookie->msg, NL80211_ATTR_KEY); 3944 if (!key) 3945 goto nla_put_failure; 3946 3947 if ((params->key && 3948 nla_put(cookie->msg, NL80211_KEY_DATA, 3949 params->key_len, params->key)) || 3950 (params->seq && 3951 nla_put(cookie->msg, NL80211_KEY_SEQ, 3952 params->seq_len, params->seq)) || 3953 (params->cipher && 3954 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 3955 params->cipher))) 3956 goto nla_put_failure; 3957 3958 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx)) 3959 goto nla_put_failure; 3960 3961 nla_nest_end(cookie->msg, key); 3962 3963 return; 3964 nla_put_failure: 3965 cookie->error = 1; 3966 } 3967 3968 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 3969 { 3970 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3971 int err; 3972 struct net_device *dev = info->user_ptr[1]; 3973 u8 key_idx = 0; 3974 const u8 *mac_addr = NULL; 3975 bool pairwise; 3976 struct get_key_cookie cookie = { 3977 .error = 0, 3978 }; 3979 void *hdr; 3980 struct sk_buff *msg; 3981 bool bigtk_support = false; 3982 3983 if (wiphy_ext_feature_isset(&rdev->wiphy, 3984 NL80211_EXT_FEATURE_BEACON_PROTECTION)) 3985 bigtk_support = true; 3986 3987 if ((dev->ieee80211_ptr->iftype == NL80211_IFTYPE_STATION || 3988 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_CLIENT) && 3989 wiphy_ext_feature_isset(&rdev->wiphy, 3990 NL80211_EXT_FEATURE_BEACON_PROTECTION_CLIENT)) 3991 bigtk_support = true; 3992 3993 if (info->attrs[NL80211_ATTR_KEY_IDX]) { 3994 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 3995 3996 if (key_idx >= 6 && key_idx <= 7 && !bigtk_support) { 3997 GENL_SET_ERR_MSG(info, "BIGTK not supported"); 3998 return -EINVAL; 3999 } 4000 } 4001 4002 if (info->attrs[NL80211_ATTR_MAC]) 4003 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4004 4005 pairwise = !!mac_addr; 4006 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 4007 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 4008 4009 if (kt != NL80211_KEYTYPE_GROUP && 4010 kt != NL80211_KEYTYPE_PAIRWISE) 4011 return -EINVAL; 4012 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 4013 } 4014 4015 if (!rdev->ops->get_key) 4016 return -EOPNOTSUPP; 4017 4018 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 4019 return -ENOENT; 4020 4021 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4022 if (!msg) 4023 return -ENOMEM; 4024 4025 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4026 NL80211_CMD_NEW_KEY); 4027 if (!hdr) 4028 goto nla_put_failure; 4029 4030 cookie.msg = msg; 4031 cookie.idx = key_idx; 4032 4033 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4034 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 4035 goto nla_put_failure; 4036 if (mac_addr && 4037 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 4038 goto nla_put_failure; 4039 4040 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 4041 get_key_callback); 4042 4043 if (err) 4044 goto free_msg; 4045 4046 if (cookie.error) 4047 goto nla_put_failure; 4048 4049 genlmsg_end(msg, hdr); 4050 return genlmsg_reply(msg, info); 4051 4052 nla_put_failure: 4053 err = -ENOBUFS; 4054 free_msg: 4055 nlmsg_free(msg); 4056 return err; 4057 } 4058 4059 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 4060 { 4061 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4062 struct key_parse key; 4063 int err; 4064 struct net_device *dev = info->user_ptr[1]; 4065 4066 err = nl80211_parse_key(info, &key); 4067 if (err) 4068 return err; 4069 4070 if (key.idx < 0) 4071 return -EINVAL; 4072 4073 /* Only support setting default key and 4074 * Extended Key ID action NL80211_KEY_SET_TX. 4075 */ 4076 if (!key.def && !key.defmgmt && !key.defbeacon && 4077 !(key.p.mode == NL80211_KEY_SET_TX)) 4078 return -EINVAL; 4079 4080 wdev_lock(dev->ieee80211_ptr); 4081 4082 if (key.def) { 4083 if (!rdev->ops->set_default_key) { 4084 err = -EOPNOTSUPP; 4085 goto out; 4086 } 4087 4088 err = nl80211_key_allowed(dev->ieee80211_ptr); 4089 if (err) 4090 goto out; 4091 4092 err = rdev_set_default_key(rdev, dev, key.idx, 4093 key.def_uni, key.def_multi); 4094 4095 if (err) 4096 goto out; 4097 4098 #ifdef CONFIG_CFG80211_WEXT 4099 dev->ieee80211_ptr->wext.default_key = key.idx; 4100 #endif 4101 } else if (key.defmgmt) { 4102 if (key.def_uni || !key.def_multi) { 4103 err = -EINVAL; 4104 goto out; 4105 } 4106 4107 if (!rdev->ops->set_default_mgmt_key) { 4108 err = -EOPNOTSUPP; 4109 goto out; 4110 } 4111 4112 err = nl80211_key_allowed(dev->ieee80211_ptr); 4113 if (err) 4114 goto out; 4115 4116 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 4117 if (err) 4118 goto out; 4119 4120 #ifdef CONFIG_CFG80211_WEXT 4121 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 4122 #endif 4123 } else if (key.defbeacon) { 4124 if (key.def_uni || !key.def_multi) { 4125 err = -EINVAL; 4126 goto out; 4127 } 4128 4129 if (!rdev->ops->set_default_beacon_key) { 4130 err = -EOPNOTSUPP; 4131 goto out; 4132 } 4133 4134 err = nl80211_key_allowed(dev->ieee80211_ptr); 4135 if (err) 4136 goto out; 4137 4138 err = rdev_set_default_beacon_key(rdev, dev, key.idx); 4139 if (err) 4140 goto out; 4141 } else if (key.p.mode == NL80211_KEY_SET_TX && 4142 wiphy_ext_feature_isset(&rdev->wiphy, 4143 NL80211_EXT_FEATURE_EXT_KEY_ID)) { 4144 u8 *mac_addr = NULL; 4145 4146 if (info->attrs[NL80211_ATTR_MAC]) 4147 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4148 4149 if (!mac_addr || key.idx < 0 || key.idx > 1) { 4150 err = -EINVAL; 4151 goto out; 4152 } 4153 4154 err = rdev_add_key(rdev, dev, key.idx, 4155 NL80211_KEYTYPE_PAIRWISE, 4156 mac_addr, &key.p); 4157 } else { 4158 err = -EINVAL; 4159 } 4160 out: 4161 wdev_unlock(dev->ieee80211_ptr); 4162 4163 return err; 4164 } 4165 4166 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 4167 { 4168 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4169 int err; 4170 struct net_device *dev = info->user_ptr[1]; 4171 struct key_parse key; 4172 const u8 *mac_addr = NULL; 4173 4174 err = nl80211_parse_key(info, &key); 4175 if (err) 4176 return err; 4177 4178 if (!key.p.key) { 4179 GENL_SET_ERR_MSG(info, "no key"); 4180 return -EINVAL; 4181 } 4182 4183 if (info->attrs[NL80211_ATTR_MAC]) 4184 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4185 4186 if (key.type == -1) { 4187 if (mac_addr) 4188 key.type = NL80211_KEYTYPE_PAIRWISE; 4189 else 4190 key.type = NL80211_KEYTYPE_GROUP; 4191 } 4192 4193 /* for now */ 4194 if (key.type != NL80211_KEYTYPE_PAIRWISE && 4195 key.type != NL80211_KEYTYPE_GROUP) { 4196 GENL_SET_ERR_MSG(info, "key type not pairwise or group"); 4197 return -EINVAL; 4198 } 4199 4200 if (key.type == NL80211_KEYTYPE_GROUP && 4201 info->attrs[NL80211_ATTR_VLAN_ID]) 4202 key.p.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 4203 4204 if (!rdev->ops->add_key) 4205 return -EOPNOTSUPP; 4206 4207 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 4208 key.type == NL80211_KEYTYPE_PAIRWISE, 4209 mac_addr)) { 4210 GENL_SET_ERR_MSG(info, "key setting validation failed"); 4211 return -EINVAL; 4212 } 4213 4214 wdev_lock(dev->ieee80211_ptr); 4215 err = nl80211_key_allowed(dev->ieee80211_ptr); 4216 if (err) 4217 GENL_SET_ERR_MSG(info, "key not allowed"); 4218 if (!err) { 4219 err = rdev_add_key(rdev, dev, key.idx, 4220 key.type == NL80211_KEYTYPE_PAIRWISE, 4221 mac_addr, &key.p); 4222 if (err) 4223 GENL_SET_ERR_MSG(info, "key addition failed"); 4224 } 4225 wdev_unlock(dev->ieee80211_ptr); 4226 4227 return err; 4228 } 4229 4230 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 4231 { 4232 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4233 int err; 4234 struct net_device *dev = info->user_ptr[1]; 4235 u8 *mac_addr = NULL; 4236 struct key_parse key; 4237 4238 err = nl80211_parse_key(info, &key); 4239 if (err) 4240 return err; 4241 4242 if (key.idx < 0) 4243 return -EINVAL; 4244 4245 if (info->attrs[NL80211_ATTR_MAC]) 4246 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4247 4248 if (key.type == -1) { 4249 if (mac_addr) 4250 key.type = NL80211_KEYTYPE_PAIRWISE; 4251 else 4252 key.type = NL80211_KEYTYPE_GROUP; 4253 } 4254 4255 /* for now */ 4256 if (key.type != NL80211_KEYTYPE_PAIRWISE && 4257 key.type != NL80211_KEYTYPE_GROUP) 4258 return -EINVAL; 4259 4260 if (!rdev->ops->del_key) 4261 return -EOPNOTSUPP; 4262 4263 wdev_lock(dev->ieee80211_ptr); 4264 err = nl80211_key_allowed(dev->ieee80211_ptr); 4265 4266 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 4267 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 4268 err = -ENOENT; 4269 4270 if (!err) 4271 err = rdev_del_key(rdev, dev, key.idx, 4272 key.type == NL80211_KEYTYPE_PAIRWISE, 4273 mac_addr); 4274 4275 #ifdef CONFIG_CFG80211_WEXT 4276 if (!err) { 4277 if (key.idx == dev->ieee80211_ptr->wext.default_key) 4278 dev->ieee80211_ptr->wext.default_key = -1; 4279 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 4280 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 4281 } 4282 #endif 4283 wdev_unlock(dev->ieee80211_ptr); 4284 4285 return err; 4286 } 4287 4288 /* This function returns an error or the number of nested attributes */ 4289 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 4290 { 4291 struct nlattr *attr; 4292 int n_entries = 0, tmp; 4293 4294 nla_for_each_nested(attr, nl_attr, tmp) { 4295 if (nla_len(attr) != ETH_ALEN) 4296 return -EINVAL; 4297 4298 n_entries++; 4299 } 4300 4301 return n_entries; 4302 } 4303 4304 /* 4305 * This function parses ACL information and allocates memory for ACL data. 4306 * On successful return, the calling function is responsible to free the 4307 * ACL buffer returned by this function. 4308 */ 4309 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 4310 struct genl_info *info) 4311 { 4312 enum nl80211_acl_policy acl_policy; 4313 struct nlattr *attr; 4314 struct cfg80211_acl_data *acl; 4315 int i = 0, n_entries, tmp; 4316 4317 if (!wiphy->max_acl_mac_addrs) 4318 return ERR_PTR(-EOPNOTSUPP); 4319 4320 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 4321 return ERR_PTR(-EINVAL); 4322 4323 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 4324 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 4325 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 4326 return ERR_PTR(-EINVAL); 4327 4328 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 4329 return ERR_PTR(-EINVAL); 4330 4331 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 4332 if (n_entries < 0) 4333 return ERR_PTR(n_entries); 4334 4335 if (n_entries > wiphy->max_acl_mac_addrs) 4336 return ERR_PTR(-ENOTSUPP); 4337 4338 acl = kzalloc(struct_size(acl, mac_addrs, n_entries), GFP_KERNEL); 4339 if (!acl) 4340 return ERR_PTR(-ENOMEM); 4341 4342 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 4343 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 4344 i++; 4345 } 4346 4347 acl->n_acl_entries = n_entries; 4348 acl->acl_policy = acl_policy; 4349 4350 return acl; 4351 } 4352 4353 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 4354 { 4355 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4356 struct net_device *dev = info->user_ptr[1]; 4357 struct cfg80211_acl_data *acl; 4358 int err; 4359 4360 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4361 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4362 return -EOPNOTSUPP; 4363 4364 if (!dev->ieee80211_ptr->beacon_interval) 4365 return -EINVAL; 4366 4367 acl = parse_acl_data(&rdev->wiphy, info); 4368 if (IS_ERR(acl)) 4369 return PTR_ERR(acl); 4370 4371 err = rdev_set_mac_acl(rdev, dev, acl); 4372 4373 kfree(acl); 4374 4375 return err; 4376 } 4377 4378 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 4379 u8 *rates, u8 rates_len) 4380 { 4381 u8 i; 4382 u32 mask = 0; 4383 4384 for (i = 0; i < rates_len; i++) { 4385 int rate = (rates[i] & 0x7f) * 5; 4386 int ridx; 4387 4388 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 4389 struct ieee80211_rate *srate = 4390 &sband->bitrates[ridx]; 4391 if (rate == srate->bitrate) { 4392 mask |= 1 << ridx; 4393 break; 4394 } 4395 } 4396 if (ridx == sband->n_bitrates) 4397 return 0; /* rate not found */ 4398 } 4399 4400 return mask; 4401 } 4402 4403 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 4404 u8 *rates, u8 rates_len, 4405 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 4406 { 4407 u8 i; 4408 4409 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 4410 4411 for (i = 0; i < rates_len; i++) { 4412 int ridx, rbit; 4413 4414 ridx = rates[i] / 8; 4415 rbit = BIT(rates[i] % 8); 4416 4417 /* check validity */ 4418 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 4419 return false; 4420 4421 /* check availability */ 4422 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN); 4423 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 4424 mcs[ridx] |= rbit; 4425 else 4426 return false; 4427 } 4428 4429 return true; 4430 } 4431 4432 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 4433 { 4434 u16 mcs_mask = 0; 4435 4436 switch (vht_mcs_map) { 4437 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 4438 break; 4439 case IEEE80211_VHT_MCS_SUPPORT_0_7: 4440 mcs_mask = 0x00FF; 4441 break; 4442 case IEEE80211_VHT_MCS_SUPPORT_0_8: 4443 mcs_mask = 0x01FF; 4444 break; 4445 case IEEE80211_VHT_MCS_SUPPORT_0_9: 4446 mcs_mask = 0x03FF; 4447 break; 4448 default: 4449 break; 4450 } 4451 4452 return mcs_mask; 4453 } 4454 4455 static void vht_build_mcs_mask(u16 vht_mcs_map, 4456 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 4457 { 4458 u8 nss; 4459 4460 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 4461 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 4462 vht_mcs_map >>= 2; 4463 } 4464 } 4465 4466 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 4467 struct nl80211_txrate_vht *txrate, 4468 u16 mcs[NL80211_VHT_NSS_MAX]) 4469 { 4470 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 4471 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 4472 u8 i; 4473 4474 if (!sband->vht_cap.vht_supported) 4475 return false; 4476 4477 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 4478 4479 /* Build vht_mcs_mask from VHT capabilities */ 4480 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 4481 4482 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 4483 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 4484 mcs[i] = txrate->mcs[i]; 4485 else 4486 return false; 4487 } 4488 4489 return true; 4490 } 4491 4492 static u16 he_mcs_map_to_mcs_mask(u8 he_mcs_map) 4493 { 4494 switch (he_mcs_map) { 4495 case IEEE80211_HE_MCS_NOT_SUPPORTED: 4496 return 0; 4497 case IEEE80211_HE_MCS_SUPPORT_0_7: 4498 return 0x00FF; 4499 case IEEE80211_HE_MCS_SUPPORT_0_9: 4500 return 0x03FF; 4501 case IEEE80211_HE_MCS_SUPPORT_0_11: 4502 return 0xFFF; 4503 default: 4504 break; 4505 } 4506 return 0; 4507 } 4508 4509 static void he_build_mcs_mask(u16 he_mcs_map, 4510 u16 he_mcs_mask[NL80211_HE_NSS_MAX]) 4511 { 4512 u8 nss; 4513 4514 for (nss = 0; nss < NL80211_HE_NSS_MAX; nss++) { 4515 he_mcs_mask[nss] = he_mcs_map_to_mcs_mask(he_mcs_map & 0x03); 4516 he_mcs_map >>= 2; 4517 } 4518 } 4519 4520 static u16 he_get_txmcsmap(struct genl_info *info, 4521 const struct ieee80211_sta_he_cap *he_cap) 4522 { 4523 struct net_device *dev = info->user_ptr[1]; 4524 struct wireless_dev *wdev = dev->ieee80211_ptr; 4525 __le16 tx_mcs; 4526 4527 switch (wdev->chandef.width) { 4528 case NL80211_CHAN_WIDTH_80P80: 4529 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80p80; 4530 break; 4531 case NL80211_CHAN_WIDTH_160: 4532 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_160; 4533 break; 4534 default: 4535 tx_mcs = he_cap->he_mcs_nss_supp.tx_mcs_80; 4536 break; 4537 } 4538 return le16_to_cpu(tx_mcs); 4539 } 4540 4541 static bool he_set_mcs_mask(struct genl_info *info, 4542 struct wireless_dev *wdev, 4543 struct ieee80211_supported_band *sband, 4544 struct nl80211_txrate_he *txrate, 4545 u16 mcs[NL80211_HE_NSS_MAX]) 4546 { 4547 const struct ieee80211_sta_he_cap *he_cap; 4548 u16 tx_mcs_mask[NL80211_HE_NSS_MAX] = {}; 4549 u16 tx_mcs_map = 0; 4550 u8 i; 4551 4552 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype); 4553 if (!he_cap) 4554 return false; 4555 4556 memset(mcs, 0, sizeof(u16) * NL80211_HE_NSS_MAX); 4557 4558 tx_mcs_map = he_get_txmcsmap(info, he_cap); 4559 4560 /* Build he_mcs_mask from HE capabilities */ 4561 he_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 4562 4563 for (i = 0; i < NL80211_HE_NSS_MAX; i++) { 4564 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 4565 mcs[i] = txrate->mcs[i]; 4566 else 4567 return false; 4568 } 4569 4570 return true; 4571 } 4572 4573 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 4574 struct nlattr *attrs[], 4575 enum nl80211_attrs attr, 4576 struct cfg80211_bitrate_mask *mask, 4577 struct net_device *dev, 4578 bool default_all_enabled) 4579 { 4580 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 4581 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4582 struct wireless_dev *wdev = dev->ieee80211_ptr; 4583 int rem, i; 4584 struct nlattr *tx_rates; 4585 struct ieee80211_supported_band *sband; 4586 u16 vht_tx_mcs_map, he_tx_mcs_map; 4587 4588 memset(mask, 0, sizeof(*mask)); 4589 /* Default to all rates enabled */ 4590 for (i = 0; i < NUM_NL80211_BANDS; i++) { 4591 const struct ieee80211_sta_he_cap *he_cap; 4592 4593 if (!default_all_enabled) 4594 break; 4595 4596 sband = rdev->wiphy.bands[i]; 4597 4598 if (!sband) 4599 continue; 4600 4601 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 4602 memcpy(mask->control[i].ht_mcs, 4603 sband->ht_cap.mcs.rx_mask, 4604 sizeof(mask->control[i].ht_mcs)); 4605 4606 if (!sband->vht_cap.vht_supported) 4607 continue; 4608 4609 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 4610 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 4611 4612 he_cap = ieee80211_get_he_iftype_cap(sband, wdev->iftype); 4613 if (!he_cap) 4614 continue; 4615 4616 he_tx_mcs_map = he_get_txmcsmap(info, he_cap); 4617 he_build_mcs_mask(he_tx_mcs_map, mask->control[i].he_mcs); 4618 4619 mask->control[i].he_gi = 0xFF; 4620 mask->control[i].he_ltf = 0xFF; 4621 } 4622 4623 /* if no rates are given set it back to the defaults */ 4624 if (!attrs[attr]) 4625 goto out; 4626 4627 /* The nested attribute uses enum nl80211_band as the index. This maps 4628 * directly to the enum nl80211_band values used in cfg80211. 4629 */ 4630 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 4631 nla_for_each_nested(tx_rates, attrs[attr], rem) { 4632 enum nl80211_band band = nla_type(tx_rates); 4633 int err; 4634 4635 if (band < 0 || band >= NUM_NL80211_BANDS) 4636 return -EINVAL; 4637 sband = rdev->wiphy.bands[band]; 4638 if (sband == NULL) 4639 return -EINVAL; 4640 err = nla_parse_nested_deprecated(tb, NL80211_TXRATE_MAX, 4641 tx_rates, 4642 nl80211_txattr_policy, 4643 info->extack); 4644 if (err) 4645 return err; 4646 if (tb[NL80211_TXRATE_LEGACY]) { 4647 mask->control[band].legacy = rateset_to_mask( 4648 sband, 4649 nla_data(tb[NL80211_TXRATE_LEGACY]), 4650 nla_len(tb[NL80211_TXRATE_LEGACY])); 4651 if ((mask->control[band].legacy == 0) && 4652 nla_len(tb[NL80211_TXRATE_LEGACY])) 4653 return -EINVAL; 4654 } 4655 if (tb[NL80211_TXRATE_HT]) { 4656 if (!ht_rateset_to_mask( 4657 sband, 4658 nla_data(tb[NL80211_TXRATE_HT]), 4659 nla_len(tb[NL80211_TXRATE_HT]), 4660 mask->control[band].ht_mcs)) 4661 return -EINVAL; 4662 } 4663 4664 if (tb[NL80211_TXRATE_VHT]) { 4665 if (!vht_set_mcs_mask( 4666 sband, 4667 nla_data(tb[NL80211_TXRATE_VHT]), 4668 mask->control[band].vht_mcs)) 4669 return -EINVAL; 4670 } 4671 4672 if (tb[NL80211_TXRATE_GI]) { 4673 mask->control[band].gi = 4674 nla_get_u8(tb[NL80211_TXRATE_GI]); 4675 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 4676 return -EINVAL; 4677 } 4678 if (tb[NL80211_TXRATE_HE] && 4679 !he_set_mcs_mask(info, wdev, sband, 4680 nla_data(tb[NL80211_TXRATE_HE]), 4681 mask->control[band].he_mcs)) 4682 return -EINVAL; 4683 4684 if (tb[NL80211_TXRATE_HE_GI]) 4685 mask->control[band].he_gi = 4686 nla_get_u8(tb[NL80211_TXRATE_HE_GI]); 4687 if (tb[NL80211_TXRATE_HE_LTF]) 4688 mask->control[band].he_ltf = 4689 nla_get_u8(tb[NL80211_TXRATE_HE_LTF]); 4690 4691 if (mask->control[band].legacy == 0) { 4692 /* don't allow empty legacy rates if HT, VHT or HE 4693 * are not even supported. 4694 */ 4695 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 4696 rdev->wiphy.bands[band]->vht_cap.vht_supported || 4697 ieee80211_get_he_iftype_cap(sband, wdev->iftype))) 4698 return -EINVAL; 4699 4700 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 4701 if (mask->control[band].ht_mcs[i]) 4702 goto out; 4703 4704 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 4705 if (mask->control[band].vht_mcs[i]) 4706 goto out; 4707 4708 for (i = 0; i < NL80211_HE_NSS_MAX; i++) 4709 if (mask->control[band].he_mcs[i]) 4710 goto out; 4711 4712 /* legacy and mcs rates may not be both empty */ 4713 return -EINVAL; 4714 } 4715 } 4716 4717 out: 4718 return 0; 4719 } 4720 4721 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 4722 enum nl80211_band band, 4723 struct cfg80211_bitrate_mask *beacon_rate) 4724 { 4725 u32 count_ht, count_vht, count_he, i; 4726 u32 rate = beacon_rate->control[band].legacy; 4727 4728 /* Allow only one rate */ 4729 if (hweight32(rate) > 1) 4730 return -EINVAL; 4731 4732 count_ht = 0; 4733 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 4734 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 4735 return -EINVAL; 4736 } else if (beacon_rate->control[band].ht_mcs[i]) { 4737 count_ht++; 4738 if (count_ht > 1) 4739 return -EINVAL; 4740 } 4741 if (count_ht && rate) 4742 return -EINVAL; 4743 } 4744 4745 count_vht = 0; 4746 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 4747 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 4748 return -EINVAL; 4749 } else if (beacon_rate->control[band].vht_mcs[i]) { 4750 count_vht++; 4751 if (count_vht > 1) 4752 return -EINVAL; 4753 } 4754 if (count_vht && rate) 4755 return -EINVAL; 4756 } 4757 4758 count_he = 0; 4759 for (i = 0; i < NL80211_HE_NSS_MAX; i++) { 4760 if (hweight16(beacon_rate->control[band].he_mcs[i]) > 1) { 4761 return -EINVAL; 4762 } else if (beacon_rate->control[band].he_mcs[i]) { 4763 count_he++; 4764 if (count_he > 1) 4765 return -EINVAL; 4766 } 4767 if (count_he && rate) 4768 return -EINVAL; 4769 } 4770 4771 if ((count_ht && count_vht && count_he) || 4772 (!rate && !count_ht && !count_vht && !count_he)) 4773 return -EINVAL; 4774 4775 if (rate && 4776 !wiphy_ext_feature_isset(&rdev->wiphy, 4777 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 4778 return -EINVAL; 4779 if (count_ht && 4780 !wiphy_ext_feature_isset(&rdev->wiphy, 4781 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 4782 return -EINVAL; 4783 if (count_vht && 4784 !wiphy_ext_feature_isset(&rdev->wiphy, 4785 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 4786 return -EINVAL; 4787 if (count_he && 4788 !wiphy_ext_feature_isset(&rdev->wiphy, 4789 NL80211_EXT_FEATURE_BEACON_RATE_HE)) 4790 return -EINVAL; 4791 4792 return 0; 4793 } 4794 4795 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev, 4796 struct nlattr *attrs[], 4797 struct cfg80211_beacon_data *bcn) 4798 { 4799 bool haveinfo = false; 4800 int err; 4801 4802 memset(bcn, 0, sizeof(*bcn)); 4803 4804 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 4805 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 4806 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 4807 if (!bcn->head_len) 4808 return -EINVAL; 4809 haveinfo = true; 4810 } 4811 4812 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 4813 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 4814 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 4815 haveinfo = true; 4816 } 4817 4818 if (!haveinfo) 4819 return -EINVAL; 4820 4821 if (attrs[NL80211_ATTR_IE]) { 4822 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 4823 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 4824 } 4825 4826 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 4827 bcn->proberesp_ies = 4828 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4829 bcn->proberesp_ies_len = 4830 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4831 } 4832 4833 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 4834 bcn->assocresp_ies = 4835 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4836 bcn->assocresp_ies_len = 4837 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4838 } 4839 4840 if (attrs[NL80211_ATTR_PROBE_RESP]) { 4841 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 4842 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 4843 } 4844 4845 if (attrs[NL80211_ATTR_FTM_RESPONDER]) { 4846 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1]; 4847 4848 err = nla_parse_nested_deprecated(tb, 4849 NL80211_FTM_RESP_ATTR_MAX, 4850 attrs[NL80211_ATTR_FTM_RESPONDER], 4851 NULL, NULL); 4852 if (err) 4853 return err; 4854 4855 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] && 4856 wiphy_ext_feature_isset(&rdev->wiphy, 4857 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 4858 bcn->ftm_responder = 1; 4859 else 4860 return -EOPNOTSUPP; 4861 4862 if (tb[NL80211_FTM_RESP_ATTR_LCI]) { 4863 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]); 4864 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]); 4865 } 4866 4867 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) { 4868 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 4869 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 4870 } 4871 } else { 4872 bcn->ftm_responder = -1; 4873 } 4874 4875 return 0; 4876 } 4877 4878 static int nl80211_parse_he_obss_pd(struct nlattr *attrs, 4879 struct ieee80211_he_obss_pd *he_obss_pd) 4880 { 4881 struct nlattr *tb[NL80211_HE_OBSS_PD_ATTR_MAX + 1]; 4882 int err; 4883 4884 err = nla_parse_nested(tb, NL80211_HE_OBSS_PD_ATTR_MAX, attrs, 4885 he_obss_pd_policy, NULL); 4886 if (err) 4887 return err; 4888 4889 if (!tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]) 4890 return -EINVAL; 4891 4892 he_obss_pd->sr_ctrl = nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_SR_CTRL]); 4893 4894 if (tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]) 4895 he_obss_pd->min_offset = 4896 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MIN_OFFSET]); 4897 if (tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]) 4898 he_obss_pd->max_offset = 4899 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_MAX_OFFSET]); 4900 if (tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]) 4901 he_obss_pd->non_srg_max_offset = 4902 nla_get_u8(tb[NL80211_HE_OBSS_PD_ATTR_NON_SRG_MAX_OFFSET]); 4903 4904 if (he_obss_pd->min_offset > he_obss_pd->max_offset) 4905 return -EINVAL; 4906 4907 if (tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]) 4908 memcpy(he_obss_pd->bss_color_bitmap, 4909 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_BSS_COLOR_BITMAP]), 4910 sizeof(he_obss_pd->bss_color_bitmap)); 4911 4912 if (tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]) 4913 memcpy(he_obss_pd->partial_bssid_bitmap, 4914 nla_data(tb[NL80211_HE_OBSS_PD_ATTR_PARTIAL_BSSID_BITMAP]), 4915 sizeof(he_obss_pd->partial_bssid_bitmap)); 4916 4917 he_obss_pd->enable = true; 4918 4919 return 0; 4920 } 4921 4922 static int nl80211_parse_he_bss_color(struct nlattr *attrs, 4923 struct cfg80211_he_bss_color *he_bss_color) 4924 { 4925 struct nlattr *tb[NL80211_HE_BSS_COLOR_ATTR_MAX + 1]; 4926 int err; 4927 4928 err = nla_parse_nested(tb, NL80211_HE_BSS_COLOR_ATTR_MAX, attrs, 4929 he_bss_color_policy, NULL); 4930 if (err) 4931 return err; 4932 4933 if (!tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]) 4934 return -EINVAL; 4935 4936 he_bss_color->color = 4937 nla_get_u8(tb[NL80211_HE_BSS_COLOR_ATTR_COLOR]); 4938 he_bss_color->enabled = 4939 !nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_DISABLED]); 4940 he_bss_color->partial = 4941 nla_get_flag(tb[NL80211_HE_BSS_COLOR_ATTR_PARTIAL]); 4942 4943 return 0; 4944 } 4945 4946 static int nl80211_parse_fils_discovery(struct cfg80211_registered_device *rdev, 4947 struct nlattr *attrs, 4948 struct cfg80211_ap_settings *params) 4949 { 4950 struct nlattr *tb[NL80211_FILS_DISCOVERY_ATTR_MAX + 1]; 4951 int ret; 4952 struct cfg80211_fils_discovery *fd = ¶ms->fils_discovery; 4953 4954 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4955 NL80211_EXT_FEATURE_FILS_DISCOVERY)) 4956 return -EINVAL; 4957 4958 ret = nla_parse_nested(tb, NL80211_FILS_DISCOVERY_ATTR_MAX, attrs, 4959 NULL, NULL); 4960 if (ret) 4961 return ret; 4962 4963 if (!tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN] || 4964 !tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX] || 4965 !tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]) 4966 return -EINVAL; 4967 4968 fd->tmpl_len = nla_len(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); 4969 fd->tmpl = nla_data(tb[NL80211_FILS_DISCOVERY_ATTR_TMPL]); 4970 fd->min_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MIN]); 4971 fd->max_interval = nla_get_u32(tb[NL80211_FILS_DISCOVERY_ATTR_INT_MAX]); 4972 4973 return 0; 4974 } 4975 4976 static int 4977 nl80211_parse_unsol_bcast_probe_resp(struct cfg80211_registered_device *rdev, 4978 struct nlattr *attrs, 4979 struct cfg80211_ap_settings *params) 4980 { 4981 struct nlattr *tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX + 1]; 4982 int ret; 4983 struct cfg80211_unsol_bcast_probe_resp *presp = 4984 ¶ms->unsol_bcast_probe_resp; 4985 4986 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4987 NL80211_EXT_FEATURE_UNSOL_BCAST_PROBE_RESP)) 4988 return -EINVAL; 4989 4990 ret = nla_parse_nested(tb, NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_MAX, 4991 attrs, NULL, NULL); 4992 if (ret) 4993 return ret; 4994 4995 if (!tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT] || 4996 !tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]) 4997 return -EINVAL; 4998 4999 presp->tmpl = nla_data(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]); 5000 presp->tmpl_len = nla_len(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_TMPL]); 5001 presp->interval = nla_get_u32(tb[NL80211_UNSOL_BCAST_PROBE_RESP_ATTR_INT]); 5002 return 0; 5003 } 5004 5005 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 5006 const u8 *rates) 5007 { 5008 int i; 5009 5010 if (!rates) 5011 return; 5012 5013 for (i = 0; i < rates[1]; i++) { 5014 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 5015 params->ht_required = true; 5016 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 5017 params->vht_required = true; 5018 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HE_PHY) 5019 params->he_required = true; 5020 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_SAE_H2E) 5021 params->sae_h2e_required = true; 5022 } 5023 } 5024 5025 /* 5026 * Since the nl80211 API didn't include, from the beginning, attributes about 5027 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 5028 * benefit of drivers that rebuild IEs in the firmware. 5029 */ 5030 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 5031 { 5032 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 5033 size_t ies_len = bcn->tail_len; 5034 const u8 *ies = bcn->tail; 5035 const u8 *rates; 5036 const u8 *cap; 5037 5038 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); 5039 nl80211_check_ap_rate_selectors(params, rates); 5040 5041 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 5042 nl80211_check_ap_rate_selectors(params, rates); 5043 5044 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); 5045 if (cap && cap[1] >= sizeof(*params->ht_cap)) 5046 params->ht_cap = (void *)(cap + 2); 5047 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 5048 if (cap && cap[1] >= sizeof(*params->vht_cap)) 5049 params->vht_cap = (void *)(cap + 2); 5050 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); 5051 if (cap && cap[1] >= sizeof(*params->he_cap) + 1) 5052 params->he_cap = (void *)(cap + 3); 5053 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_OPERATION, ies, ies_len); 5054 if (cap && cap[1] >= sizeof(*params->he_oper) + 1) 5055 params->he_oper = (void *)(cap + 3); 5056 } 5057 5058 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 5059 struct cfg80211_ap_settings *params) 5060 { 5061 struct wireless_dev *wdev; 5062 bool ret = false; 5063 5064 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 5065 if (wdev->iftype != NL80211_IFTYPE_AP && 5066 wdev->iftype != NL80211_IFTYPE_P2P_GO) 5067 continue; 5068 5069 if (!wdev->preset_chandef.chan) 5070 continue; 5071 5072 params->chandef = wdev->preset_chandef; 5073 ret = true; 5074 break; 5075 } 5076 5077 return ret; 5078 } 5079 5080 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 5081 enum nl80211_auth_type auth_type, 5082 enum nl80211_commands cmd) 5083 { 5084 if (auth_type > NL80211_AUTHTYPE_MAX) 5085 return false; 5086 5087 switch (cmd) { 5088 case NL80211_CMD_AUTHENTICATE: 5089 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 5090 auth_type == NL80211_AUTHTYPE_SAE) 5091 return false; 5092 if (!wiphy_ext_feature_isset(&rdev->wiphy, 5093 NL80211_EXT_FEATURE_FILS_STA) && 5094 (auth_type == NL80211_AUTHTYPE_FILS_SK || 5095 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 5096 auth_type == NL80211_AUTHTYPE_FILS_PK)) 5097 return false; 5098 return true; 5099 case NL80211_CMD_CONNECT: 5100 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 5101 !wiphy_ext_feature_isset(&rdev->wiphy, 5102 NL80211_EXT_FEATURE_SAE_OFFLOAD) && 5103 auth_type == NL80211_AUTHTYPE_SAE) 5104 return false; 5105 5106 /* FILS with SK PFS or PK not supported yet */ 5107 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 5108 auth_type == NL80211_AUTHTYPE_FILS_PK) 5109 return false; 5110 if (!wiphy_ext_feature_isset( 5111 &rdev->wiphy, 5112 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 5113 auth_type == NL80211_AUTHTYPE_FILS_SK) 5114 return false; 5115 return true; 5116 case NL80211_CMD_START_AP: 5117 if (!wiphy_ext_feature_isset(&rdev->wiphy, 5118 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP) && 5119 auth_type == NL80211_AUTHTYPE_SAE) 5120 return false; 5121 /* FILS not supported yet */ 5122 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 5123 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 5124 auth_type == NL80211_AUTHTYPE_FILS_PK) 5125 return false; 5126 return true; 5127 default: 5128 return false; 5129 } 5130 } 5131 5132 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 5133 { 5134 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5135 struct net_device *dev = info->user_ptr[1]; 5136 struct wireless_dev *wdev = dev->ieee80211_ptr; 5137 struct cfg80211_ap_settings params; 5138 int err; 5139 5140 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5141 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5142 return -EOPNOTSUPP; 5143 5144 if (!rdev->ops->start_ap) 5145 return -EOPNOTSUPP; 5146 5147 if (wdev->beacon_interval) 5148 return -EALREADY; 5149 5150 memset(¶ms, 0, sizeof(params)); 5151 5152 /* these are required for START_AP */ 5153 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 5154 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 5155 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 5156 return -EINVAL; 5157 5158 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon); 5159 if (err) 5160 return err; 5161 5162 params.beacon_interval = 5163 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 5164 params.dtim_period = 5165 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 5166 5167 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 5168 params.beacon_interval); 5169 if (err) 5170 return err; 5171 5172 /* 5173 * In theory, some of these attributes should be required here 5174 * but since they were not used when the command was originally 5175 * added, keep them optional for old user space programs to let 5176 * them continue to work with drivers that do not need the 5177 * additional information -- drivers must check! 5178 */ 5179 if (info->attrs[NL80211_ATTR_SSID]) { 5180 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 5181 params.ssid_len = 5182 nla_len(info->attrs[NL80211_ATTR_SSID]); 5183 if (params.ssid_len == 0) 5184 return -EINVAL; 5185 } 5186 5187 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) 5188 params.hidden_ssid = nla_get_u32( 5189 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 5190 5191 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 5192 5193 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 5194 params.auth_type = nla_get_u32( 5195 info->attrs[NL80211_ATTR_AUTH_TYPE]); 5196 if (!nl80211_valid_auth_type(rdev, params.auth_type, 5197 NL80211_CMD_START_AP)) 5198 return -EINVAL; 5199 } else 5200 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 5201 5202 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 5203 NL80211_MAX_NR_CIPHER_SUITES); 5204 if (err) 5205 return err; 5206 5207 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 5208 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 5209 return -EOPNOTSUPP; 5210 params.inactivity_timeout = nla_get_u16( 5211 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 5212 } 5213 5214 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5216 return -EINVAL; 5217 params.p2p_ctwindow = 5218 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5219 if (params.p2p_ctwindow != 0 && 5220 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5221 return -EINVAL; 5222 } 5223 5224 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5225 u8 tmp; 5226 5227 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5228 return -EINVAL; 5229 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5230 params.p2p_opp_ps = tmp; 5231 if (params.p2p_opp_ps != 0 && 5232 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5233 return -EINVAL; 5234 } 5235 5236 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 5237 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 5238 if (err) 5239 return err; 5240 } else if (wdev->preset_chandef.chan) { 5241 params.chandef = wdev->preset_chandef; 5242 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 5243 return -EINVAL; 5244 5245 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 5246 wdev->iftype)) 5247 return -EINVAL; 5248 5249 if (info->attrs[NL80211_ATTR_TX_RATES]) { 5250 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 5251 NL80211_ATTR_TX_RATES, 5252 ¶ms.beacon_rate, 5253 dev, false); 5254 if (err) 5255 return err; 5256 5257 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band, 5258 ¶ms.beacon_rate); 5259 if (err) 5260 return err; 5261 } 5262 5263 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 5264 params.smps_mode = 5265 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 5266 switch (params.smps_mode) { 5267 case NL80211_SMPS_OFF: 5268 break; 5269 case NL80211_SMPS_STATIC: 5270 if (!(rdev->wiphy.features & 5271 NL80211_FEATURE_STATIC_SMPS)) 5272 return -EINVAL; 5273 break; 5274 case NL80211_SMPS_DYNAMIC: 5275 if (!(rdev->wiphy.features & 5276 NL80211_FEATURE_DYNAMIC_SMPS)) 5277 return -EINVAL; 5278 break; 5279 default: 5280 return -EINVAL; 5281 } 5282 } else { 5283 params.smps_mode = NL80211_SMPS_OFF; 5284 } 5285 5286 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 5287 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 5288 return -EOPNOTSUPP; 5289 5290 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 5291 params.acl = parse_acl_data(&rdev->wiphy, info); 5292 if (IS_ERR(params.acl)) 5293 return PTR_ERR(params.acl); 5294 } 5295 5296 params.twt_responder = 5297 nla_get_flag(info->attrs[NL80211_ATTR_TWT_RESPONDER]); 5298 5299 if (info->attrs[NL80211_ATTR_HE_OBSS_PD]) { 5300 err = nl80211_parse_he_obss_pd( 5301 info->attrs[NL80211_ATTR_HE_OBSS_PD], 5302 ¶ms.he_obss_pd); 5303 if (err) 5304 goto out; 5305 } 5306 5307 if (info->attrs[NL80211_ATTR_HE_BSS_COLOR]) { 5308 err = nl80211_parse_he_bss_color( 5309 info->attrs[NL80211_ATTR_HE_BSS_COLOR], 5310 ¶ms.he_bss_color); 5311 if (err) 5312 goto out; 5313 } 5314 5315 if (info->attrs[NL80211_ATTR_FILS_DISCOVERY]) { 5316 err = nl80211_parse_fils_discovery(rdev, 5317 info->attrs[NL80211_ATTR_FILS_DISCOVERY], 5318 ¶ms); 5319 if (err) 5320 goto out; 5321 } 5322 5323 if (info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP]) { 5324 err = nl80211_parse_unsol_bcast_probe_resp( 5325 rdev, info->attrs[NL80211_ATTR_UNSOL_BCAST_PROBE_RESP], 5326 ¶ms); 5327 if (err) 5328 return err; 5329 } 5330 5331 nl80211_calculate_ap_params(¶ms); 5332 5333 if (info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT]) 5334 params.flags |= AP_SETTINGS_EXTERNAL_AUTH_SUPPORT; 5335 5336 wdev_lock(wdev); 5337 err = rdev_start_ap(rdev, dev, ¶ms); 5338 if (!err) { 5339 wdev->preset_chandef = params.chandef; 5340 wdev->beacon_interval = params.beacon_interval; 5341 wdev->chandef = params.chandef; 5342 wdev->ssid_len = params.ssid_len; 5343 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 5344 5345 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 5346 wdev->conn_owner_nlportid = info->snd_portid; 5347 } 5348 wdev_unlock(wdev); 5349 5350 out: 5351 kfree(params.acl); 5352 5353 return err; 5354 } 5355 5356 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 5357 { 5358 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5359 struct net_device *dev = info->user_ptr[1]; 5360 struct wireless_dev *wdev = dev->ieee80211_ptr; 5361 struct cfg80211_beacon_data params; 5362 int err; 5363 5364 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5365 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5366 return -EOPNOTSUPP; 5367 5368 if (!rdev->ops->change_beacon) 5369 return -EOPNOTSUPP; 5370 5371 if (!wdev->beacon_interval) 5372 return -EINVAL; 5373 5374 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms); 5375 if (err) 5376 return err; 5377 5378 wdev_lock(wdev); 5379 err = rdev_change_beacon(rdev, dev, ¶ms); 5380 wdev_unlock(wdev); 5381 5382 return err; 5383 } 5384 5385 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 5386 { 5387 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5388 struct net_device *dev = info->user_ptr[1]; 5389 5390 return cfg80211_stop_ap(rdev, dev, false); 5391 } 5392 5393 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 5394 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 5395 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 5396 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 5397 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 5398 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 5399 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 5400 }; 5401 5402 static int parse_station_flags(struct genl_info *info, 5403 enum nl80211_iftype iftype, 5404 struct station_parameters *params) 5405 { 5406 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 5407 struct nlattr *nla; 5408 int flag; 5409 5410 /* 5411 * Try parsing the new attribute first so userspace 5412 * can specify both for older kernels. 5413 */ 5414 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 5415 if (nla) { 5416 struct nl80211_sta_flag_update *sta_flags; 5417 5418 sta_flags = nla_data(nla); 5419 params->sta_flags_mask = sta_flags->mask; 5420 params->sta_flags_set = sta_flags->set; 5421 params->sta_flags_set &= params->sta_flags_mask; 5422 if ((params->sta_flags_mask | 5423 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 5424 return -EINVAL; 5425 return 0; 5426 } 5427 5428 /* if present, parse the old attribute */ 5429 5430 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 5431 if (!nla) 5432 return 0; 5433 5434 if (nla_parse_nested_deprecated(flags, NL80211_STA_FLAG_MAX, nla, sta_flags_policy, info->extack)) 5435 return -EINVAL; 5436 5437 /* 5438 * Only allow certain flags for interface types so that 5439 * other attributes are silently ignored. Remember that 5440 * this is backward compatibility code with old userspace 5441 * and shouldn't be hit in other cases anyway. 5442 */ 5443 switch (iftype) { 5444 case NL80211_IFTYPE_AP: 5445 case NL80211_IFTYPE_AP_VLAN: 5446 case NL80211_IFTYPE_P2P_GO: 5447 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 5448 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 5449 BIT(NL80211_STA_FLAG_WME) | 5450 BIT(NL80211_STA_FLAG_MFP); 5451 break; 5452 case NL80211_IFTYPE_P2P_CLIENT: 5453 case NL80211_IFTYPE_STATION: 5454 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 5455 BIT(NL80211_STA_FLAG_TDLS_PEER); 5456 break; 5457 case NL80211_IFTYPE_MESH_POINT: 5458 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5459 BIT(NL80211_STA_FLAG_MFP) | 5460 BIT(NL80211_STA_FLAG_AUTHORIZED); 5461 break; 5462 default: 5463 return -EINVAL; 5464 } 5465 5466 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 5467 if (flags[flag]) { 5468 params->sta_flags_set |= (1<<flag); 5469 5470 /* no longer support new API additions in old API */ 5471 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 5472 return -EINVAL; 5473 } 5474 } 5475 5476 return 0; 5477 } 5478 5479 bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, int attr) 5480 { 5481 struct nlattr *rate; 5482 u32 bitrate; 5483 u16 bitrate_compat; 5484 enum nl80211_rate_info rate_flg; 5485 5486 rate = nla_nest_start_noflag(msg, attr); 5487 if (!rate) 5488 return false; 5489 5490 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 5491 bitrate = cfg80211_calculate_bitrate(info); 5492 /* report 16-bit bitrate only if we can */ 5493 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 5494 if (bitrate > 0 && 5495 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 5496 return false; 5497 if (bitrate_compat > 0 && 5498 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 5499 return false; 5500 5501 switch (info->bw) { 5502 case RATE_INFO_BW_5: 5503 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 5504 break; 5505 case RATE_INFO_BW_10: 5506 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 5507 break; 5508 default: 5509 WARN_ON(1); 5510 fallthrough; 5511 case RATE_INFO_BW_20: 5512 rate_flg = 0; 5513 break; 5514 case RATE_INFO_BW_40: 5515 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 5516 break; 5517 case RATE_INFO_BW_80: 5518 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 5519 break; 5520 case RATE_INFO_BW_160: 5521 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 5522 break; 5523 case RATE_INFO_BW_HE_RU: 5524 rate_flg = 0; 5525 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS)); 5526 } 5527 5528 if (rate_flg && nla_put_flag(msg, rate_flg)) 5529 return false; 5530 5531 if (info->flags & RATE_INFO_FLAGS_MCS) { 5532 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 5533 return false; 5534 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 5535 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 5536 return false; 5537 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 5538 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 5539 return false; 5540 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 5541 return false; 5542 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 5543 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 5544 return false; 5545 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) { 5546 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs)) 5547 return false; 5548 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss)) 5549 return false; 5550 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi)) 5551 return false; 5552 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm)) 5553 return false; 5554 if (info->bw == RATE_INFO_BW_HE_RU && 5555 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC, 5556 info->he_ru_alloc)) 5557 return false; 5558 } 5559 5560 nla_nest_end(msg, rate); 5561 return true; 5562 } 5563 5564 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 5565 int id) 5566 { 5567 void *attr; 5568 int i = 0; 5569 5570 if (!mask) 5571 return true; 5572 5573 attr = nla_nest_start_noflag(msg, id); 5574 if (!attr) 5575 return false; 5576 5577 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 5578 if (!(mask & BIT(i))) 5579 continue; 5580 5581 if (nla_put_u8(msg, i, signal[i])) 5582 return false; 5583 } 5584 5585 nla_nest_end(msg, attr); 5586 5587 return true; 5588 } 5589 5590 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 5591 u32 seq, int flags, 5592 struct cfg80211_registered_device *rdev, 5593 struct net_device *dev, 5594 const u8 *mac_addr, struct station_info *sinfo) 5595 { 5596 void *hdr; 5597 struct nlattr *sinfoattr, *bss_param; 5598 5599 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 5600 if (!hdr) { 5601 cfg80211_sinfo_release_content(sinfo); 5602 return -1; 5603 } 5604 5605 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5606 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 5607 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 5608 goto nla_put_failure; 5609 5610 sinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_STA_INFO); 5611 if (!sinfoattr) 5612 goto nla_put_failure; 5613 5614 #define PUT_SINFO(attr, memb, type) do { \ 5615 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 5616 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 5617 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 5618 sinfo->memb)) \ 5619 goto nla_put_failure; \ 5620 } while (0) 5621 #define PUT_SINFO_U64(attr, memb) do { \ 5622 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 5623 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 5624 sinfo->memb, NL80211_STA_INFO_PAD)) \ 5625 goto nla_put_failure; \ 5626 } while (0) 5627 5628 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 5629 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 5630 PUT_SINFO_U64(ASSOC_AT_BOOTTIME, assoc_at); 5631 5632 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 5633 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) && 5634 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 5635 (u32)sinfo->rx_bytes)) 5636 goto nla_put_failure; 5637 5638 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 5639 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) && 5640 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 5641 (u32)sinfo->tx_bytes)) 5642 goto nla_put_failure; 5643 5644 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 5645 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 5646 PUT_SINFO(LLID, llid, u16); 5647 PUT_SINFO(PLID, plid, u16); 5648 PUT_SINFO(PLINK_STATE, plink_state, u8); 5649 PUT_SINFO_U64(RX_DURATION, rx_duration); 5650 PUT_SINFO_U64(TX_DURATION, tx_duration); 5651 5652 if (wiphy_ext_feature_isset(&rdev->wiphy, 5653 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 5654 PUT_SINFO(AIRTIME_WEIGHT, airtime_weight, u16); 5655 5656 switch (rdev->wiphy.signal_type) { 5657 case CFG80211_SIGNAL_TYPE_MBM: 5658 PUT_SINFO(SIGNAL, signal, u8); 5659 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 5660 break; 5661 default: 5662 break; 5663 } 5664 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) { 5665 if (!nl80211_put_signal(msg, sinfo->chains, 5666 sinfo->chain_signal, 5667 NL80211_STA_INFO_CHAIN_SIGNAL)) 5668 goto nla_put_failure; 5669 } 5670 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 5671 if (!nl80211_put_signal(msg, sinfo->chains, 5672 sinfo->chain_signal_avg, 5673 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 5674 goto nla_put_failure; 5675 } 5676 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) { 5677 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 5678 NL80211_STA_INFO_TX_BITRATE)) 5679 goto nla_put_failure; 5680 } 5681 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) { 5682 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 5683 NL80211_STA_INFO_RX_BITRATE)) 5684 goto nla_put_failure; 5685 } 5686 5687 PUT_SINFO(RX_PACKETS, rx_packets, u32); 5688 PUT_SINFO(TX_PACKETS, tx_packets, u32); 5689 PUT_SINFO(TX_RETRIES, tx_retries, u32); 5690 PUT_SINFO(TX_FAILED, tx_failed, u32); 5691 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 5692 PUT_SINFO(AIRTIME_LINK_METRIC, airtime_link_metric, u32); 5693 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 5694 PUT_SINFO(LOCAL_PM, local_pm, u32); 5695 PUT_SINFO(PEER_PM, peer_pm, u32); 5696 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 5697 PUT_SINFO(CONNECTED_TO_GATE, connected_to_gate, u8); 5698 PUT_SINFO(CONNECTED_TO_AS, connected_to_as, u8); 5699 5700 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) { 5701 bss_param = nla_nest_start_noflag(msg, 5702 NL80211_STA_INFO_BSS_PARAM); 5703 if (!bss_param) 5704 goto nla_put_failure; 5705 5706 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 5707 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 5708 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 5709 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 5710 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 5711 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 5712 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 5713 sinfo->bss_param.dtim_period) || 5714 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 5715 sinfo->bss_param.beacon_interval)) 5716 goto nla_put_failure; 5717 5718 nla_nest_end(msg, bss_param); 5719 } 5720 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) && 5721 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 5722 sizeof(struct nl80211_sta_flag_update), 5723 &sinfo->sta_flags)) 5724 goto nla_put_failure; 5725 5726 PUT_SINFO_U64(T_OFFSET, t_offset); 5727 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 5728 PUT_SINFO_U64(BEACON_RX, rx_beacon); 5729 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 5730 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32); 5731 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32); 5732 if (wiphy_ext_feature_isset(&rdev->wiphy, 5733 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) { 5734 PUT_SINFO(ACK_SIGNAL, ack_signal, u8); 5735 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8); 5736 } 5737 5738 #undef PUT_SINFO 5739 #undef PUT_SINFO_U64 5740 5741 if (sinfo->pertid) { 5742 struct nlattr *tidsattr; 5743 int tid; 5744 5745 tidsattr = nla_nest_start_noflag(msg, 5746 NL80211_STA_INFO_TID_STATS); 5747 if (!tidsattr) 5748 goto nla_put_failure; 5749 5750 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 5751 struct cfg80211_tid_stats *tidstats; 5752 struct nlattr *tidattr; 5753 5754 tidstats = &sinfo->pertid[tid]; 5755 5756 if (!tidstats->filled) 5757 continue; 5758 5759 tidattr = nla_nest_start_noflag(msg, tid + 1); 5760 if (!tidattr) 5761 goto nla_put_failure; 5762 5763 #define PUT_TIDVAL_U64(attr, memb) do { \ 5764 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 5765 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 5766 tidstats->memb, NL80211_TID_STATS_PAD)) \ 5767 goto nla_put_failure; \ 5768 } while (0) 5769 5770 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 5771 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 5772 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 5773 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 5774 5775 #undef PUT_TIDVAL_U64 5776 if ((tidstats->filled & 5777 BIT(NL80211_TID_STATS_TXQ_STATS)) && 5778 !nl80211_put_txq_stats(msg, &tidstats->txq_stats, 5779 NL80211_TID_STATS_TXQ_STATS)) 5780 goto nla_put_failure; 5781 5782 nla_nest_end(msg, tidattr); 5783 } 5784 5785 nla_nest_end(msg, tidsattr); 5786 } 5787 5788 nla_nest_end(msg, sinfoattr); 5789 5790 if (sinfo->assoc_req_ies_len && 5791 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 5792 sinfo->assoc_req_ies)) 5793 goto nla_put_failure; 5794 5795 cfg80211_sinfo_release_content(sinfo); 5796 genlmsg_end(msg, hdr); 5797 return 0; 5798 5799 nla_put_failure: 5800 cfg80211_sinfo_release_content(sinfo); 5801 genlmsg_cancel(msg, hdr); 5802 return -EMSGSIZE; 5803 } 5804 5805 static int nl80211_dump_station(struct sk_buff *skb, 5806 struct netlink_callback *cb) 5807 { 5808 struct station_info sinfo; 5809 struct cfg80211_registered_device *rdev; 5810 struct wireless_dev *wdev; 5811 u8 mac_addr[ETH_ALEN]; 5812 int sta_idx = cb->args[2]; 5813 int err; 5814 5815 rtnl_lock(); 5816 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 5817 if (err) 5818 goto out_err; 5819 5820 if (!wdev->netdev) { 5821 err = -EINVAL; 5822 goto out_err; 5823 } 5824 5825 if (!rdev->ops->dump_station) { 5826 err = -EOPNOTSUPP; 5827 goto out_err; 5828 } 5829 5830 while (1) { 5831 memset(&sinfo, 0, sizeof(sinfo)); 5832 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 5833 mac_addr, &sinfo); 5834 if (err == -ENOENT) 5835 break; 5836 if (err) 5837 goto out_err; 5838 5839 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 5840 NETLINK_CB(cb->skb).portid, 5841 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5842 rdev, wdev->netdev, mac_addr, 5843 &sinfo) < 0) 5844 goto out; 5845 5846 sta_idx++; 5847 } 5848 5849 out: 5850 cb->args[2] = sta_idx; 5851 err = skb->len; 5852 out_err: 5853 rtnl_unlock(); 5854 5855 return err; 5856 } 5857 5858 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 5859 { 5860 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5861 struct net_device *dev = info->user_ptr[1]; 5862 struct station_info sinfo; 5863 struct sk_buff *msg; 5864 u8 *mac_addr = NULL; 5865 int err; 5866 5867 memset(&sinfo, 0, sizeof(sinfo)); 5868 5869 if (!info->attrs[NL80211_ATTR_MAC]) 5870 return -EINVAL; 5871 5872 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5873 5874 if (!rdev->ops->get_station) 5875 return -EOPNOTSUPP; 5876 5877 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 5878 if (err) 5879 return err; 5880 5881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5882 if (!msg) { 5883 cfg80211_sinfo_release_content(&sinfo); 5884 return -ENOMEM; 5885 } 5886 5887 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 5888 info->snd_portid, info->snd_seq, 0, 5889 rdev, dev, mac_addr, &sinfo) < 0) { 5890 nlmsg_free(msg); 5891 return -ENOBUFS; 5892 } 5893 5894 return genlmsg_reply(msg, info); 5895 } 5896 5897 int cfg80211_check_station_change(struct wiphy *wiphy, 5898 struct station_parameters *params, 5899 enum cfg80211_station_type statype) 5900 { 5901 if (params->listen_interval != -1 && 5902 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 5903 return -EINVAL; 5904 5905 if (params->support_p2p_ps != -1 && 5906 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 5907 return -EINVAL; 5908 5909 if (params->aid && 5910 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 5911 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 5912 return -EINVAL; 5913 5914 /* When you run into this, adjust the code below for the new flag */ 5915 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 5916 5917 switch (statype) { 5918 case CFG80211_STA_MESH_PEER_KERNEL: 5919 case CFG80211_STA_MESH_PEER_USER: 5920 /* 5921 * No ignoring the TDLS flag here -- the userspace mesh 5922 * code doesn't have the bug of including TDLS in the 5923 * mask everywhere. 5924 */ 5925 if (params->sta_flags_mask & 5926 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5927 BIT(NL80211_STA_FLAG_MFP) | 5928 BIT(NL80211_STA_FLAG_AUTHORIZED))) 5929 return -EINVAL; 5930 break; 5931 case CFG80211_STA_TDLS_PEER_SETUP: 5932 case CFG80211_STA_TDLS_PEER_ACTIVE: 5933 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 5934 return -EINVAL; 5935 /* ignore since it can't change */ 5936 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5937 break; 5938 default: 5939 /* disallow mesh-specific things */ 5940 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 5941 return -EINVAL; 5942 if (params->local_pm) 5943 return -EINVAL; 5944 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 5945 return -EINVAL; 5946 } 5947 5948 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 5949 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 5950 /* TDLS can't be set, ... */ 5951 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 5952 return -EINVAL; 5953 /* 5954 * ... but don't bother the driver with it. This works around 5955 * a hostapd/wpa_supplicant issue -- it always includes the 5956 * TLDS_PEER flag in the mask even for AP mode. 5957 */ 5958 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5959 } 5960 5961 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 5962 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 5963 /* reject other things that can't change */ 5964 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 5965 return -EINVAL; 5966 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 5967 return -EINVAL; 5968 if (params->supported_rates) 5969 return -EINVAL; 5970 if (params->ext_capab || params->ht_capa || params->vht_capa || 5971 params->he_capa) 5972 return -EINVAL; 5973 } 5974 5975 if (statype != CFG80211_STA_AP_CLIENT && 5976 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 5977 if (params->vlan) 5978 return -EINVAL; 5979 } 5980 5981 switch (statype) { 5982 case CFG80211_STA_AP_MLME_CLIENT: 5983 /* Use this only for authorizing/unauthorizing a station */ 5984 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 5985 return -EOPNOTSUPP; 5986 break; 5987 case CFG80211_STA_AP_CLIENT: 5988 case CFG80211_STA_AP_CLIENT_UNASSOC: 5989 /* accept only the listed bits */ 5990 if (params->sta_flags_mask & 5991 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 5992 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5993 BIT(NL80211_STA_FLAG_ASSOCIATED) | 5994 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 5995 BIT(NL80211_STA_FLAG_WME) | 5996 BIT(NL80211_STA_FLAG_MFP))) 5997 return -EINVAL; 5998 5999 /* but authenticated/associated only if driver handles it */ 6000 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 6001 params->sta_flags_mask & 6002 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 6003 BIT(NL80211_STA_FLAG_ASSOCIATED))) 6004 return -EINVAL; 6005 break; 6006 case CFG80211_STA_IBSS: 6007 case CFG80211_STA_AP_STA: 6008 /* reject any changes other than AUTHORIZED */ 6009 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 6010 return -EINVAL; 6011 break; 6012 case CFG80211_STA_TDLS_PEER_SETUP: 6013 /* reject any changes other than AUTHORIZED or WME */ 6014 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 6015 BIT(NL80211_STA_FLAG_WME))) 6016 return -EINVAL; 6017 /* force (at least) rates when authorizing */ 6018 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 6019 !params->supported_rates) 6020 return -EINVAL; 6021 break; 6022 case CFG80211_STA_TDLS_PEER_ACTIVE: 6023 /* reject any changes */ 6024 return -EINVAL; 6025 case CFG80211_STA_MESH_PEER_KERNEL: 6026 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 6027 return -EINVAL; 6028 break; 6029 case CFG80211_STA_MESH_PEER_USER: 6030 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 6031 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 6032 return -EINVAL; 6033 break; 6034 } 6035 6036 /* 6037 * Older kernel versions ignored this attribute entirely, so don't 6038 * reject attempts to update it but mark it as unused instead so the 6039 * driver won't look at the data. 6040 */ 6041 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 6042 statype != CFG80211_STA_TDLS_PEER_SETUP) 6043 params->opmode_notif_used = false; 6044 6045 return 0; 6046 } 6047 EXPORT_SYMBOL(cfg80211_check_station_change); 6048 6049 /* 6050 * Get vlan interface making sure it is running and on the right wiphy. 6051 */ 6052 static struct net_device *get_vlan(struct genl_info *info, 6053 struct cfg80211_registered_device *rdev) 6054 { 6055 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 6056 struct net_device *v; 6057 int ret; 6058 6059 if (!vlanattr) 6060 return NULL; 6061 6062 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 6063 if (!v) 6064 return ERR_PTR(-ENODEV); 6065 6066 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 6067 ret = -EINVAL; 6068 goto error; 6069 } 6070 6071 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 6072 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 6073 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 6074 ret = -EINVAL; 6075 goto error; 6076 } 6077 6078 if (!netif_running(v)) { 6079 ret = -ENETDOWN; 6080 goto error; 6081 } 6082 6083 return v; 6084 error: 6085 dev_put(v); 6086 return ERR_PTR(ret); 6087 } 6088 6089 static const struct nla_policy 6090 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 6091 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 6092 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 6093 }; 6094 6095 static int nl80211_parse_sta_wme(struct genl_info *info, 6096 struct station_parameters *params) 6097 { 6098 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 6099 struct nlattr *nla; 6100 int err; 6101 6102 /* parse WME attributes if present */ 6103 if (!info->attrs[NL80211_ATTR_STA_WME]) 6104 return 0; 6105 6106 nla = info->attrs[NL80211_ATTR_STA_WME]; 6107 err = nla_parse_nested_deprecated(tb, NL80211_STA_WME_MAX, nla, 6108 nl80211_sta_wme_policy, 6109 info->extack); 6110 if (err) 6111 return err; 6112 6113 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 6114 params->uapsd_queues = nla_get_u8( 6115 tb[NL80211_STA_WME_UAPSD_QUEUES]); 6116 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 6117 return -EINVAL; 6118 6119 if (tb[NL80211_STA_WME_MAX_SP]) 6120 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 6121 6122 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 6123 return -EINVAL; 6124 6125 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 6126 6127 return 0; 6128 } 6129 6130 static int nl80211_parse_sta_channel_info(struct genl_info *info, 6131 struct station_parameters *params) 6132 { 6133 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 6134 params->supported_channels = 6135 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 6136 params->supported_channels_len = 6137 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 6138 /* 6139 * Need to include at least one (first channel, number of 6140 * channels) tuple for each subband (checked in policy), 6141 * and must have proper tuples for the rest of the data as well. 6142 */ 6143 if (params->supported_channels_len % 2) 6144 return -EINVAL; 6145 } 6146 6147 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 6148 params->supported_oper_classes = 6149 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 6150 params->supported_oper_classes_len = 6151 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 6152 } 6153 return 0; 6154 } 6155 6156 static int nl80211_set_station_tdls(struct genl_info *info, 6157 struct station_parameters *params) 6158 { 6159 int err; 6160 /* Dummy STA entry gets updated once the peer capabilities are known */ 6161 if (info->attrs[NL80211_ATTR_PEER_AID]) 6162 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 6163 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 6164 params->ht_capa = 6165 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 6166 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 6167 params->vht_capa = 6168 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 6169 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 6170 params->he_capa = 6171 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 6172 params->he_capa_len = 6173 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 6174 } 6175 6176 err = nl80211_parse_sta_channel_info(info, params); 6177 if (err) 6178 return err; 6179 6180 return nl80211_parse_sta_wme(info, params); 6181 } 6182 6183 static int nl80211_parse_sta_txpower_setting(struct genl_info *info, 6184 struct station_parameters *params) 6185 { 6186 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6187 int idx; 6188 6189 if (info->attrs[NL80211_ATTR_STA_TX_POWER_SETTING]) { 6190 if (!rdev->ops->set_tx_power || 6191 !wiphy_ext_feature_isset(&rdev->wiphy, 6192 NL80211_EXT_FEATURE_STA_TX_PWR)) 6193 return -EOPNOTSUPP; 6194 6195 idx = NL80211_ATTR_STA_TX_POWER_SETTING; 6196 params->txpwr.type = nla_get_u8(info->attrs[idx]); 6197 6198 if (params->txpwr.type == NL80211_TX_POWER_LIMITED) { 6199 idx = NL80211_ATTR_STA_TX_POWER; 6200 6201 if (info->attrs[idx]) 6202 params->txpwr.power = 6203 nla_get_s16(info->attrs[idx]); 6204 else 6205 return -EINVAL; 6206 } 6207 params->sta_modify_mask |= STATION_PARAM_APPLY_STA_TXPOWER; 6208 } 6209 6210 return 0; 6211 } 6212 6213 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 6214 { 6215 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6216 struct net_device *dev = info->user_ptr[1]; 6217 struct station_parameters params; 6218 u8 *mac_addr; 6219 int err; 6220 6221 memset(¶ms, 0, sizeof(params)); 6222 6223 if (!rdev->ops->change_station) 6224 return -EOPNOTSUPP; 6225 6226 /* 6227 * AID and listen_interval properties can be set only for unassociated 6228 * station. Include these parameters here and will check them in 6229 * cfg80211_check_station_change(). 6230 */ 6231 if (info->attrs[NL80211_ATTR_STA_AID]) 6232 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 6233 6234 if (info->attrs[NL80211_ATTR_VLAN_ID]) 6235 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 6236 6237 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 6238 params.listen_interval = 6239 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 6240 else 6241 params.listen_interval = -1; 6242 6243 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) 6244 params.support_p2p_ps = 6245 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 6246 else 6247 params.support_p2p_ps = -1; 6248 6249 if (!info->attrs[NL80211_ATTR_MAC]) 6250 return -EINVAL; 6251 6252 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 6253 6254 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 6255 params.supported_rates = 6256 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 6257 params.supported_rates_len = 6258 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 6259 } 6260 6261 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 6262 params.capability = 6263 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 6264 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 6265 } 6266 6267 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 6268 params.ext_capab = 6269 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 6270 params.ext_capab_len = 6271 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 6272 } 6273 6274 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 6275 return -EINVAL; 6276 6277 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 6278 params.plink_action = 6279 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 6280 6281 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 6282 params.plink_state = 6283 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 6284 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) 6285 params.peer_aid = nla_get_u16( 6286 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 6287 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 6288 } 6289 6290 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) 6291 params.local_pm = nla_get_u32( 6292 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 6293 6294 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 6295 params.opmode_notif_used = true; 6296 params.opmode_notif = 6297 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 6298 } 6299 6300 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]) 6301 params.he_6ghz_capa = 6302 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]); 6303 6304 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) 6305 params.airtime_weight = 6306 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); 6307 6308 if (params.airtime_weight && 6309 !wiphy_ext_feature_isset(&rdev->wiphy, 6310 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 6311 return -EOPNOTSUPP; 6312 6313 err = nl80211_parse_sta_txpower_setting(info, ¶ms); 6314 if (err) 6315 return err; 6316 6317 /* Include parameters for TDLS peer (will check later) */ 6318 err = nl80211_set_station_tdls(info, ¶ms); 6319 if (err) 6320 return err; 6321 6322 params.vlan = get_vlan(info, rdev); 6323 if (IS_ERR(params.vlan)) 6324 return PTR_ERR(params.vlan); 6325 6326 switch (dev->ieee80211_ptr->iftype) { 6327 case NL80211_IFTYPE_AP: 6328 case NL80211_IFTYPE_AP_VLAN: 6329 case NL80211_IFTYPE_P2P_GO: 6330 case NL80211_IFTYPE_P2P_CLIENT: 6331 case NL80211_IFTYPE_STATION: 6332 case NL80211_IFTYPE_ADHOC: 6333 case NL80211_IFTYPE_MESH_POINT: 6334 break; 6335 default: 6336 err = -EOPNOTSUPP; 6337 goto out_put_vlan; 6338 } 6339 6340 /* driver will call cfg80211_check_station_change() */ 6341 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 6342 6343 out_put_vlan: 6344 if (params.vlan) 6345 dev_put(params.vlan); 6346 6347 return err; 6348 } 6349 6350 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 6351 { 6352 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6353 int err; 6354 struct net_device *dev = info->user_ptr[1]; 6355 struct station_parameters params; 6356 u8 *mac_addr = NULL; 6357 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 6358 BIT(NL80211_STA_FLAG_ASSOCIATED); 6359 6360 memset(¶ms, 0, sizeof(params)); 6361 6362 if (!rdev->ops->add_station) 6363 return -EOPNOTSUPP; 6364 6365 if (!info->attrs[NL80211_ATTR_MAC]) 6366 return -EINVAL; 6367 6368 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 6369 return -EINVAL; 6370 6371 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 6372 return -EINVAL; 6373 6374 if (!info->attrs[NL80211_ATTR_STA_AID] && 6375 !info->attrs[NL80211_ATTR_PEER_AID]) 6376 return -EINVAL; 6377 6378 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 6379 params.supported_rates = 6380 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 6381 params.supported_rates_len = 6382 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 6383 params.listen_interval = 6384 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 6385 6386 if (info->attrs[NL80211_ATTR_VLAN_ID]) 6387 params.vlan_id = nla_get_u16(info->attrs[NL80211_ATTR_VLAN_ID]); 6388 6389 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 6390 params.support_p2p_ps = 6391 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 6392 } else { 6393 /* 6394 * if not specified, assume it's supported for P2P GO interface, 6395 * and is NOT supported for AP interface 6396 */ 6397 params.support_p2p_ps = 6398 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 6399 } 6400 6401 if (info->attrs[NL80211_ATTR_PEER_AID]) 6402 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 6403 else 6404 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 6405 6406 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 6407 params.capability = 6408 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 6409 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 6410 } 6411 6412 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 6413 params.ext_capab = 6414 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 6415 params.ext_capab_len = 6416 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 6417 } 6418 6419 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 6420 params.ht_capa = 6421 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 6422 6423 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 6424 params.vht_capa = 6425 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 6426 6427 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 6428 params.he_capa = 6429 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 6430 params.he_capa_len = 6431 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 6432 } 6433 6434 if (info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]) 6435 params.he_6ghz_capa = 6436 nla_data(info->attrs[NL80211_ATTR_HE_6GHZ_CAPABILITY]); 6437 6438 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 6439 params.opmode_notif_used = true; 6440 params.opmode_notif = 6441 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 6442 } 6443 6444 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 6445 params.plink_action = 6446 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 6447 6448 if (info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]) 6449 params.airtime_weight = 6450 nla_get_u16(info->attrs[NL80211_ATTR_AIRTIME_WEIGHT]); 6451 6452 if (params.airtime_weight && 6453 !wiphy_ext_feature_isset(&rdev->wiphy, 6454 NL80211_EXT_FEATURE_AIRTIME_FAIRNESS)) 6455 return -EOPNOTSUPP; 6456 6457 err = nl80211_parse_sta_txpower_setting(info, ¶ms); 6458 if (err) 6459 return err; 6460 6461 err = nl80211_parse_sta_channel_info(info, ¶ms); 6462 if (err) 6463 return err; 6464 6465 err = nl80211_parse_sta_wme(info, ¶ms); 6466 if (err) 6467 return err; 6468 6469 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 6470 return -EINVAL; 6471 6472 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 6473 * as userspace might just pass through the capabilities from the IEs 6474 * directly, rather than enforcing this restriction and returning an 6475 * error in this case. 6476 */ 6477 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 6478 params.ht_capa = NULL; 6479 params.vht_capa = NULL; 6480 6481 /* HE requires WME */ 6482 if (params.he_capa_len || params.he_6ghz_capa) 6483 return -EINVAL; 6484 } 6485 6486 /* Ensure that HT/VHT capabilities are not set for 6 GHz HE STA */ 6487 if (params.he_6ghz_capa && (params.ht_capa || params.vht_capa)) 6488 return -EINVAL; 6489 6490 /* When you run into this, adjust the code below for the new flag */ 6491 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 6492 6493 switch (dev->ieee80211_ptr->iftype) { 6494 case NL80211_IFTYPE_AP: 6495 case NL80211_IFTYPE_AP_VLAN: 6496 case NL80211_IFTYPE_P2P_GO: 6497 /* ignore WME attributes if iface/sta is not capable */ 6498 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 6499 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 6500 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 6501 6502 /* TDLS peers cannot be added */ 6503 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 6504 info->attrs[NL80211_ATTR_PEER_AID]) 6505 return -EINVAL; 6506 /* but don't bother the driver with it */ 6507 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 6508 6509 /* allow authenticated/associated only if driver handles it */ 6510 if (!(rdev->wiphy.features & 6511 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 6512 params.sta_flags_mask & auth_assoc) 6513 return -EINVAL; 6514 6515 /* Older userspace, or userspace wanting to be compatible with 6516 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 6517 * and assoc flags in the mask, but assumes the station will be 6518 * added as associated anyway since this was the required driver 6519 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 6520 * introduced. 6521 * In order to not bother drivers with this quirk in the API 6522 * set the flags in both the mask and set for new stations in 6523 * this case. 6524 */ 6525 if (!(params.sta_flags_mask & auth_assoc)) { 6526 params.sta_flags_mask |= auth_assoc; 6527 params.sta_flags_set |= auth_assoc; 6528 } 6529 6530 /* must be last in here for error handling */ 6531 params.vlan = get_vlan(info, rdev); 6532 if (IS_ERR(params.vlan)) 6533 return PTR_ERR(params.vlan); 6534 break; 6535 case NL80211_IFTYPE_MESH_POINT: 6536 /* ignore uAPSD data */ 6537 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 6538 6539 /* associated is disallowed */ 6540 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 6541 return -EINVAL; 6542 /* TDLS peers cannot be added */ 6543 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 6544 info->attrs[NL80211_ATTR_PEER_AID]) 6545 return -EINVAL; 6546 break; 6547 case NL80211_IFTYPE_STATION: 6548 case NL80211_IFTYPE_P2P_CLIENT: 6549 /* ignore uAPSD data */ 6550 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 6551 6552 /* these are disallowed */ 6553 if (params.sta_flags_mask & 6554 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 6555 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 6556 return -EINVAL; 6557 /* Only TDLS peers can be added */ 6558 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 6559 return -EINVAL; 6560 /* Can only add if TDLS ... */ 6561 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 6562 return -EOPNOTSUPP; 6563 /* ... with external setup is supported */ 6564 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 6565 return -EOPNOTSUPP; 6566 /* 6567 * Older wpa_supplicant versions always mark the TDLS peer 6568 * as authorized, but it shouldn't yet be. 6569 */ 6570 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 6571 break; 6572 default: 6573 return -EOPNOTSUPP; 6574 } 6575 6576 /* be aware of params.vlan when changing code here */ 6577 6578 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 6579 6580 if (params.vlan) 6581 dev_put(params.vlan); 6582 return err; 6583 } 6584 6585 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 6586 { 6587 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6588 struct net_device *dev = info->user_ptr[1]; 6589 struct station_del_parameters params; 6590 6591 memset(¶ms, 0, sizeof(params)); 6592 6593 if (info->attrs[NL80211_ATTR_MAC]) 6594 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 6595 6596 switch (dev->ieee80211_ptr->iftype) { 6597 case NL80211_IFTYPE_AP: 6598 case NL80211_IFTYPE_AP_VLAN: 6599 case NL80211_IFTYPE_MESH_POINT: 6600 case NL80211_IFTYPE_P2P_GO: 6601 /* always accept these */ 6602 break; 6603 case NL80211_IFTYPE_ADHOC: 6604 /* conditionally accept */ 6605 if (wiphy_ext_feature_isset(&rdev->wiphy, 6606 NL80211_EXT_FEATURE_DEL_IBSS_STA)) 6607 break; 6608 return -EINVAL; 6609 default: 6610 return -EINVAL; 6611 } 6612 6613 if (!rdev->ops->del_station) 6614 return -EOPNOTSUPP; 6615 6616 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 6617 params.subtype = 6618 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 6619 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 6620 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 6621 return -EINVAL; 6622 } else { 6623 /* Default to Deauthentication frame */ 6624 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 6625 } 6626 6627 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 6628 params.reason_code = 6629 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6630 if (params.reason_code == 0) 6631 return -EINVAL; /* 0 is reserved */ 6632 } else { 6633 /* Default to reason code 2 */ 6634 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 6635 } 6636 6637 return rdev_del_station(rdev, dev, ¶ms); 6638 } 6639 6640 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 6641 int flags, struct net_device *dev, 6642 u8 *dst, u8 *next_hop, 6643 struct mpath_info *pinfo) 6644 { 6645 void *hdr; 6646 struct nlattr *pinfoattr; 6647 6648 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 6649 if (!hdr) 6650 return -1; 6651 6652 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 6653 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 6654 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 6655 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 6656 goto nla_put_failure; 6657 6658 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MPATH_INFO); 6659 if (!pinfoattr) 6660 goto nla_put_failure; 6661 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 6662 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 6663 pinfo->frame_qlen)) 6664 goto nla_put_failure; 6665 if (((pinfo->filled & MPATH_INFO_SN) && 6666 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 6667 ((pinfo->filled & MPATH_INFO_METRIC) && 6668 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 6669 pinfo->metric)) || 6670 ((pinfo->filled & MPATH_INFO_EXPTIME) && 6671 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 6672 pinfo->exptime)) || 6673 ((pinfo->filled & MPATH_INFO_FLAGS) && 6674 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 6675 pinfo->flags)) || 6676 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 6677 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 6678 pinfo->discovery_timeout)) || 6679 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 6680 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 6681 pinfo->discovery_retries)) || 6682 ((pinfo->filled & MPATH_INFO_HOP_COUNT) && 6683 nla_put_u8(msg, NL80211_MPATH_INFO_HOP_COUNT, 6684 pinfo->hop_count)) || 6685 ((pinfo->filled & MPATH_INFO_PATH_CHANGE) && 6686 nla_put_u32(msg, NL80211_MPATH_INFO_PATH_CHANGE, 6687 pinfo->path_change_count))) 6688 goto nla_put_failure; 6689 6690 nla_nest_end(msg, pinfoattr); 6691 6692 genlmsg_end(msg, hdr); 6693 return 0; 6694 6695 nla_put_failure: 6696 genlmsg_cancel(msg, hdr); 6697 return -EMSGSIZE; 6698 } 6699 6700 static int nl80211_dump_mpath(struct sk_buff *skb, 6701 struct netlink_callback *cb) 6702 { 6703 struct mpath_info pinfo; 6704 struct cfg80211_registered_device *rdev; 6705 struct wireless_dev *wdev; 6706 u8 dst[ETH_ALEN]; 6707 u8 next_hop[ETH_ALEN]; 6708 int path_idx = cb->args[2]; 6709 int err; 6710 6711 rtnl_lock(); 6712 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 6713 if (err) 6714 goto out_err; 6715 6716 if (!rdev->ops->dump_mpath) { 6717 err = -EOPNOTSUPP; 6718 goto out_err; 6719 } 6720 6721 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 6722 err = -EOPNOTSUPP; 6723 goto out_err; 6724 } 6725 6726 while (1) { 6727 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 6728 next_hop, &pinfo); 6729 if (err == -ENOENT) 6730 break; 6731 if (err) 6732 goto out_err; 6733 6734 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 6735 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6736 wdev->netdev, dst, next_hop, 6737 &pinfo) < 0) 6738 goto out; 6739 6740 path_idx++; 6741 } 6742 6743 out: 6744 cb->args[2] = path_idx; 6745 err = skb->len; 6746 out_err: 6747 rtnl_unlock(); 6748 return err; 6749 } 6750 6751 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 6752 { 6753 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6754 int err; 6755 struct net_device *dev = info->user_ptr[1]; 6756 struct mpath_info pinfo; 6757 struct sk_buff *msg; 6758 u8 *dst = NULL; 6759 u8 next_hop[ETH_ALEN]; 6760 6761 memset(&pinfo, 0, sizeof(pinfo)); 6762 6763 if (!info->attrs[NL80211_ATTR_MAC]) 6764 return -EINVAL; 6765 6766 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 6767 6768 if (!rdev->ops->get_mpath) 6769 return -EOPNOTSUPP; 6770 6771 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6772 return -EOPNOTSUPP; 6773 6774 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 6775 if (err) 6776 return err; 6777 6778 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6779 if (!msg) 6780 return -ENOMEM; 6781 6782 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 6783 dev, dst, next_hop, &pinfo) < 0) { 6784 nlmsg_free(msg); 6785 return -ENOBUFS; 6786 } 6787 6788 return genlmsg_reply(msg, info); 6789 } 6790 6791 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 6792 { 6793 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6794 struct net_device *dev = info->user_ptr[1]; 6795 u8 *dst = NULL; 6796 u8 *next_hop = NULL; 6797 6798 if (!info->attrs[NL80211_ATTR_MAC]) 6799 return -EINVAL; 6800 6801 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 6802 return -EINVAL; 6803 6804 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 6805 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 6806 6807 if (!rdev->ops->change_mpath) 6808 return -EOPNOTSUPP; 6809 6810 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6811 return -EOPNOTSUPP; 6812 6813 return rdev_change_mpath(rdev, dev, dst, next_hop); 6814 } 6815 6816 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 6817 { 6818 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6819 struct net_device *dev = info->user_ptr[1]; 6820 u8 *dst = NULL; 6821 u8 *next_hop = NULL; 6822 6823 if (!info->attrs[NL80211_ATTR_MAC]) 6824 return -EINVAL; 6825 6826 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 6827 return -EINVAL; 6828 6829 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 6830 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 6831 6832 if (!rdev->ops->add_mpath) 6833 return -EOPNOTSUPP; 6834 6835 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6836 return -EOPNOTSUPP; 6837 6838 return rdev_add_mpath(rdev, dev, dst, next_hop); 6839 } 6840 6841 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 6842 { 6843 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6844 struct net_device *dev = info->user_ptr[1]; 6845 u8 *dst = NULL; 6846 6847 if (info->attrs[NL80211_ATTR_MAC]) 6848 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 6849 6850 if (!rdev->ops->del_mpath) 6851 return -EOPNOTSUPP; 6852 6853 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6854 return -EOPNOTSUPP; 6855 6856 return rdev_del_mpath(rdev, dev, dst); 6857 } 6858 6859 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 6860 { 6861 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6862 int err; 6863 struct net_device *dev = info->user_ptr[1]; 6864 struct mpath_info pinfo; 6865 struct sk_buff *msg; 6866 u8 *dst = NULL; 6867 u8 mpp[ETH_ALEN]; 6868 6869 memset(&pinfo, 0, sizeof(pinfo)); 6870 6871 if (!info->attrs[NL80211_ATTR_MAC]) 6872 return -EINVAL; 6873 6874 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 6875 6876 if (!rdev->ops->get_mpp) 6877 return -EOPNOTSUPP; 6878 6879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 6880 return -EOPNOTSUPP; 6881 6882 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 6883 if (err) 6884 return err; 6885 6886 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6887 if (!msg) 6888 return -ENOMEM; 6889 6890 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 6891 dev, dst, mpp, &pinfo) < 0) { 6892 nlmsg_free(msg); 6893 return -ENOBUFS; 6894 } 6895 6896 return genlmsg_reply(msg, info); 6897 } 6898 6899 static int nl80211_dump_mpp(struct sk_buff *skb, 6900 struct netlink_callback *cb) 6901 { 6902 struct mpath_info pinfo; 6903 struct cfg80211_registered_device *rdev; 6904 struct wireless_dev *wdev; 6905 u8 dst[ETH_ALEN]; 6906 u8 mpp[ETH_ALEN]; 6907 int path_idx = cb->args[2]; 6908 int err; 6909 6910 rtnl_lock(); 6911 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 6912 if (err) 6913 goto out_err; 6914 6915 if (!rdev->ops->dump_mpp) { 6916 err = -EOPNOTSUPP; 6917 goto out_err; 6918 } 6919 6920 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 6921 err = -EOPNOTSUPP; 6922 goto out_err; 6923 } 6924 6925 while (1) { 6926 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 6927 mpp, &pinfo); 6928 if (err == -ENOENT) 6929 break; 6930 if (err) 6931 goto out_err; 6932 6933 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 6934 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6935 wdev->netdev, dst, mpp, 6936 &pinfo) < 0) 6937 goto out; 6938 6939 path_idx++; 6940 } 6941 6942 out: 6943 cb->args[2] = path_idx; 6944 err = skb->len; 6945 out_err: 6946 rtnl_unlock(); 6947 return err; 6948 } 6949 6950 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 6951 { 6952 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6953 struct net_device *dev = info->user_ptr[1]; 6954 struct wireless_dev *wdev = dev->ieee80211_ptr; 6955 struct bss_parameters params; 6956 int err; 6957 6958 memset(¶ms, 0, sizeof(params)); 6959 /* default to not changing parameters */ 6960 params.use_cts_prot = -1; 6961 params.use_short_preamble = -1; 6962 params.use_short_slot_time = -1; 6963 params.ap_isolate = -1; 6964 params.ht_opmode = -1; 6965 params.p2p_ctwindow = -1; 6966 params.p2p_opp_ps = -1; 6967 6968 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 6969 params.use_cts_prot = 6970 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 6971 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 6972 params.use_short_preamble = 6973 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 6974 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 6975 params.use_short_slot_time = 6976 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 6977 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 6978 params.basic_rates = 6979 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6980 params.basic_rates_len = 6981 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 6982 } 6983 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 6984 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 6985 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 6986 params.ht_opmode = 6987 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 6988 6989 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 6990 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 6991 return -EINVAL; 6992 params.p2p_ctwindow = 6993 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 6994 if (params.p2p_ctwindow != 0 && 6995 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 6996 return -EINVAL; 6997 } 6998 6999 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 7000 u8 tmp; 7001 7002 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 7003 return -EINVAL; 7004 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 7005 params.p2p_opp_ps = tmp; 7006 if (params.p2p_opp_ps && 7007 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 7008 return -EINVAL; 7009 } 7010 7011 if (!rdev->ops->change_bss) 7012 return -EOPNOTSUPP; 7013 7014 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 7015 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 7016 return -EOPNOTSUPP; 7017 7018 wdev_lock(wdev); 7019 err = rdev_change_bss(rdev, dev, ¶ms); 7020 wdev_unlock(wdev); 7021 7022 return err; 7023 } 7024 7025 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 7026 { 7027 char *data = NULL; 7028 bool is_indoor; 7029 enum nl80211_user_reg_hint_type user_reg_hint_type; 7030 u32 owner_nlportid; 7031 7032 /* 7033 * You should only get this when cfg80211 hasn't yet initialized 7034 * completely when built-in to the kernel right between the time 7035 * window between nl80211_init() and regulatory_init(), if that is 7036 * even possible. 7037 */ 7038 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 7039 return -EINPROGRESS; 7040 7041 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 7042 user_reg_hint_type = 7043 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 7044 else 7045 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 7046 7047 switch (user_reg_hint_type) { 7048 case NL80211_USER_REG_HINT_USER: 7049 case NL80211_USER_REG_HINT_CELL_BASE: 7050 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 7051 return -EINVAL; 7052 7053 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 7054 return regulatory_hint_user(data, user_reg_hint_type); 7055 case NL80211_USER_REG_HINT_INDOOR: 7056 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 7057 owner_nlportid = info->snd_portid; 7058 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 7059 } else { 7060 owner_nlportid = 0; 7061 is_indoor = true; 7062 } 7063 7064 return regulatory_hint_indoor(is_indoor, owner_nlportid); 7065 default: 7066 return -EINVAL; 7067 } 7068 } 7069 7070 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info) 7071 { 7072 return reg_reload_regdb(); 7073 } 7074 7075 static int nl80211_get_mesh_config(struct sk_buff *skb, 7076 struct genl_info *info) 7077 { 7078 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7079 struct net_device *dev = info->user_ptr[1]; 7080 struct wireless_dev *wdev = dev->ieee80211_ptr; 7081 struct mesh_config cur_params; 7082 int err = 0; 7083 void *hdr; 7084 struct nlattr *pinfoattr; 7085 struct sk_buff *msg; 7086 7087 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 7088 return -EOPNOTSUPP; 7089 7090 if (!rdev->ops->get_mesh_config) 7091 return -EOPNOTSUPP; 7092 7093 wdev_lock(wdev); 7094 /* If not connected, get default parameters */ 7095 if (!wdev->mesh_id_len) 7096 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 7097 else 7098 err = rdev_get_mesh_config(rdev, dev, &cur_params); 7099 wdev_unlock(wdev); 7100 7101 if (err) 7102 return err; 7103 7104 /* Draw up a netlink message to send back */ 7105 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7106 if (!msg) 7107 return -ENOMEM; 7108 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7109 NL80211_CMD_GET_MESH_CONFIG); 7110 if (!hdr) 7111 goto out; 7112 pinfoattr = nla_nest_start_noflag(msg, NL80211_ATTR_MESH_CONFIG); 7113 if (!pinfoattr) 7114 goto nla_put_failure; 7115 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 7116 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 7117 cur_params.dot11MeshRetryTimeout) || 7118 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 7119 cur_params.dot11MeshConfirmTimeout) || 7120 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 7121 cur_params.dot11MeshHoldingTimeout) || 7122 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 7123 cur_params.dot11MeshMaxPeerLinks) || 7124 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 7125 cur_params.dot11MeshMaxRetries) || 7126 nla_put_u8(msg, NL80211_MESHCONF_TTL, 7127 cur_params.dot11MeshTTL) || 7128 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 7129 cur_params.element_ttl) || 7130 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 7131 cur_params.auto_open_plinks) || 7132 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 7133 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 7134 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 7135 cur_params.dot11MeshHWMPmaxPREQretries) || 7136 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 7137 cur_params.path_refresh_time) || 7138 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 7139 cur_params.min_discovery_timeout) || 7140 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 7141 cur_params.dot11MeshHWMPactivePathTimeout) || 7142 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 7143 cur_params.dot11MeshHWMPpreqMinInterval) || 7144 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 7145 cur_params.dot11MeshHWMPperrMinInterval) || 7146 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 7147 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 7148 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 7149 cur_params.dot11MeshHWMPRootMode) || 7150 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 7151 cur_params.dot11MeshHWMPRannInterval) || 7152 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 7153 cur_params.dot11MeshGateAnnouncementProtocol) || 7154 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 7155 cur_params.dot11MeshForwarding) || 7156 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 7157 cur_params.rssi_threshold) || 7158 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 7159 cur_params.ht_opmode) || 7160 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 7161 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 7162 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 7163 cur_params.dot11MeshHWMProotInterval) || 7164 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 7165 cur_params.dot11MeshHWMPconfirmationInterval) || 7166 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 7167 cur_params.power_mode) || 7168 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 7169 cur_params.dot11MeshAwakeWindowDuration) || 7170 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 7171 cur_params.plink_timeout) || 7172 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_GATE, 7173 cur_params.dot11MeshConnectedToMeshGate) || 7174 nla_put_u8(msg, NL80211_MESHCONF_NOLEARN, 7175 cur_params.dot11MeshNolearn) || 7176 nla_put_u8(msg, NL80211_MESHCONF_CONNECTED_TO_AS, 7177 cur_params.dot11MeshConnectedToAuthServer)) 7178 goto nla_put_failure; 7179 nla_nest_end(msg, pinfoattr); 7180 genlmsg_end(msg, hdr); 7181 return genlmsg_reply(msg, info); 7182 7183 nla_put_failure: 7184 out: 7185 nlmsg_free(msg); 7186 return -ENOBUFS; 7187 } 7188 7189 static const struct nla_policy 7190 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 7191 [NL80211_MESHCONF_RETRY_TIMEOUT] = 7192 NLA_POLICY_RANGE(NLA_U16, 1, 255), 7193 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = 7194 NLA_POLICY_RANGE(NLA_U16, 1, 255), 7195 [NL80211_MESHCONF_HOLDING_TIMEOUT] = 7196 NLA_POLICY_RANGE(NLA_U16, 1, 255), 7197 [NL80211_MESHCONF_MAX_PEER_LINKS] = 7198 NLA_POLICY_RANGE(NLA_U16, 0, 255), 7199 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16), 7200 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 7201 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 7202 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1), 7203 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = 7204 NLA_POLICY_RANGE(NLA_U32, 1, 255), 7205 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 7206 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 7207 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1), 7208 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 7209 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = 7210 NLA_POLICY_MIN(NLA_U16, 1), 7211 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = 7212 NLA_POLICY_MIN(NLA_U16, 1), 7213 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = 7214 NLA_POLICY_MIN(NLA_U16, 1), 7215 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4), 7216 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = 7217 NLA_POLICY_MIN(NLA_U16, 1), 7218 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1), 7219 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1), 7220 [NL80211_MESHCONF_RSSI_THRESHOLD] = 7221 NLA_POLICY_RANGE(NLA_S32, -255, 0), 7222 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 7223 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 7224 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = 7225 NLA_POLICY_MIN(NLA_U16, 1), 7226 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = 7227 NLA_POLICY_MIN(NLA_U16, 1), 7228 [NL80211_MESHCONF_POWER_MODE] = 7229 NLA_POLICY_RANGE(NLA_U32, 7230 NL80211_MESH_POWER_ACTIVE, 7231 NL80211_MESH_POWER_MAX), 7232 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 7233 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 7234 [NL80211_MESHCONF_CONNECTED_TO_GATE] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 7235 [NL80211_MESHCONF_NOLEARN] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 7236 [NL80211_MESHCONF_CONNECTED_TO_AS] = NLA_POLICY_RANGE(NLA_U8, 0, 1), 7237 }; 7238 7239 static const struct nla_policy 7240 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 7241 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 7242 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 7243 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 7244 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 7245 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 7246 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 7247 [NL80211_MESH_SETUP_IE] = 7248 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 7249 IEEE80211_MAX_DATA_LEN), 7250 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 7251 }; 7252 7253 static int nl80211_parse_mesh_config(struct genl_info *info, 7254 struct mesh_config *cfg, 7255 u32 *mask_out) 7256 { 7257 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 7258 u32 mask = 0; 7259 u16 ht_opmode; 7260 7261 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \ 7262 do { \ 7263 if (tb[attr]) { \ 7264 cfg->param = fn(tb[attr]); \ 7265 mask |= BIT((attr) - 1); \ 7266 } \ 7267 } while (0) 7268 7269 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 7270 return -EINVAL; 7271 if (nla_parse_nested_deprecated(tb, NL80211_MESHCONF_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_CONFIG], nl80211_meshconf_params_policy, info->extack)) 7272 return -EINVAL; 7273 7274 /* This makes sure that there aren't more than 32 mesh config 7275 * parameters (otherwise our bitfield scheme would not work.) */ 7276 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 7277 7278 /* Fill in the params struct */ 7279 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask, 7280 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); 7281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask, 7282 NL80211_MESHCONF_CONFIRM_TIMEOUT, 7283 nla_get_u16); 7284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask, 7285 NL80211_MESHCONF_HOLDING_TIMEOUT, 7286 nla_get_u16); 7287 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask, 7288 NL80211_MESHCONF_MAX_PEER_LINKS, 7289 nla_get_u16); 7290 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask, 7291 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); 7292 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask, 7293 NL80211_MESHCONF_TTL, nla_get_u8); 7294 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask, 7295 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8); 7296 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask, 7297 NL80211_MESHCONF_AUTO_OPEN_PLINKS, 7298 nla_get_u8); 7299 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 7300 mask, 7301 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 7302 nla_get_u32); 7303 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask, 7304 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 7305 nla_get_u8); 7306 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask, 7307 NL80211_MESHCONF_PATH_REFRESH_TIME, 7308 nla_get_u32); 7309 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) && 7310 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535)) 7311 return -EINVAL; 7312 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask, 7313 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 7314 nla_get_u16); 7315 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 7316 mask, 7317 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 7318 nla_get_u32); 7319 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) && 7320 (cfg->dot11MeshHWMPactivePathTimeout < 1 || 7321 cfg->dot11MeshHWMPactivePathTimeout > 65535)) 7322 return -EINVAL; 7323 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask, 7324 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 7325 nla_get_u16); 7326 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask, 7327 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 7328 nla_get_u16); 7329 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 7330 dot11MeshHWMPnetDiameterTraversalTime, mask, 7331 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 7332 nla_get_u16); 7333 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask, 7334 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8); 7335 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask, 7336 NL80211_MESHCONF_HWMP_RANN_INTERVAL, 7337 nla_get_u16); 7338 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol, 7339 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 7340 nla_get_u8); 7341 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask, 7342 NL80211_MESHCONF_FORWARDING, nla_get_u8); 7343 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask, 7344 NL80211_MESHCONF_RSSI_THRESHOLD, 7345 nla_get_s32); 7346 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToMeshGate, mask, 7347 NL80211_MESHCONF_CONNECTED_TO_GATE, 7348 nla_get_u8); 7349 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConnectedToAuthServer, mask, 7350 NL80211_MESHCONF_CONNECTED_TO_AS, 7351 nla_get_u8); 7352 /* 7353 * Check HT operation mode based on 7354 * IEEE 802.11-2016 9.4.2.57 HT Operation element. 7355 */ 7356 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 7357 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 7358 7359 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 7360 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 7361 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 7362 return -EINVAL; 7363 7364 /* NON_HT_STA bit is reserved, but some programs set it */ 7365 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT; 7366 7367 cfg->ht_opmode = ht_opmode; 7368 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 7369 } 7370 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 7371 dot11MeshHWMPactivePathToRootTimeout, mask, 7372 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 7373 nla_get_u32); 7374 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) && 7375 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 || 7376 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535)) 7377 return -EINVAL; 7378 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask, 7379 NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 7380 nla_get_u16); 7381 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval, 7382 mask, 7383 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 7384 nla_get_u16); 7385 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask, 7386 NL80211_MESHCONF_POWER_MODE, nla_get_u32); 7387 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask, 7388 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 7389 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask, 7390 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32); 7391 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNolearn, mask, 7392 NL80211_MESHCONF_NOLEARN, nla_get_u8); 7393 if (mask_out) 7394 *mask_out = mask; 7395 7396 return 0; 7397 7398 #undef FILL_IN_MESH_PARAM_IF_SET 7399 } 7400 7401 static int nl80211_parse_mesh_setup(struct genl_info *info, 7402 struct mesh_setup *setup) 7403 { 7404 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7405 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 7406 7407 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 7408 return -EINVAL; 7409 if (nla_parse_nested_deprecated(tb, NL80211_MESH_SETUP_ATTR_MAX, info->attrs[NL80211_ATTR_MESH_SETUP], nl80211_mesh_setup_params_policy, info->extack)) 7410 return -EINVAL; 7411 7412 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 7413 setup->sync_method = 7414 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 7415 IEEE80211_SYNC_METHOD_VENDOR : 7416 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 7417 7418 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 7419 setup->path_sel_proto = 7420 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 7421 IEEE80211_PATH_PROTOCOL_VENDOR : 7422 IEEE80211_PATH_PROTOCOL_HWMP; 7423 7424 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 7425 setup->path_metric = 7426 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 7427 IEEE80211_PATH_METRIC_VENDOR : 7428 IEEE80211_PATH_METRIC_AIRTIME; 7429 7430 if (tb[NL80211_MESH_SETUP_IE]) { 7431 struct nlattr *ieattr = 7432 tb[NL80211_MESH_SETUP_IE]; 7433 setup->ie = nla_data(ieattr); 7434 setup->ie_len = nla_len(ieattr); 7435 } 7436 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 7437 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 7438 return -EINVAL; 7439 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 7440 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 7441 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 7442 if (setup->is_secure) 7443 setup->user_mpm = true; 7444 7445 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 7446 if (!setup->user_mpm) 7447 return -EINVAL; 7448 setup->auth_id = 7449 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 7450 } 7451 7452 return 0; 7453 } 7454 7455 static int nl80211_update_mesh_config(struct sk_buff *skb, 7456 struct genl_info *info) 7457 { 7458 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7459 struct net_device *dev = info->user_ptr[1]; 7460 struct wireless_dev *wdev = dev->ieee80211_ptr; 7461 struct mesh_config cfg; 7462 u32 mask; 7463 int err; 7464 7465 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 7466 return -EOPNOTSUPP; 7467 7468 if (!rdev->ops->update_mesh_config) 7469 return -EOPNOTSUPP; 7470 7471 err = nl80211_parse_mesh_config(info, &cfg, &mask); 7472 if (err) 7473 return err; 7474 7475 wdev_lock(wdev); 7476 if (!wdev->mesh_id_len) 7477 err = -ENOLINK; 7478 7479 if (!err) 7480 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 7481 7482 wdev_unlock(wdev); 7483 7484 return err; 7485 } 7486 7487 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 7488 struct sk_buff *msg) 7489 { 7490 struct nlattr *nl_reg_rules; 7491 unsigned int i; 7492 7493 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 7494 (regdom->dfs_region && 7495 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 7496 goto nla_put_failure; 7497 7498 nl_reg_rules = nla_nest_start_noflag(msg, NL80211_ATTR_REG_RULES); 7499 if (!nl_reg_rules) 7500 goto nla_put_failure; 7501 7502 for (i = 0; i < regdom->n_reg_rules; i++) { 7503 struct nlattr *nl_reg_rule; 7504 const struct ieee80211_reg_rule *reg_rule; 7505 const struct ieee80211_freq_range *freq_range; 7506 const struct ieee80211_power_rule *power_rule; 7507 unsigned int max_bandwidth_khz; 7508 7509 reg_rule = ®dom->reg_rules[i]; 7510 freq_range = ®_rule->freq_range; 7511 power_rule = ®_rule->power_rule; 7512 7513 nl_reg_rule = nla_nest_start_noflag(msg, i); 7514 if (!nl_reg_rule) 7515 goto nla_put_failure; 7516 7517 max_bandwidth_khz = freq_range->max_bandwidth_khz; 7518 if (!max_bandwidth_khz) 7519 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 7520 reg_rule); 7521 7522 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 7523 reg_rule->flags) || 7524 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 7525 freq_range->start_freq_khz) || 7526 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 7527 freq_range->end_freq_khz) || 7528 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 7529 max_bandwidth_khz) || 7530 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 7531 power_rule->max_antenna_gain) || 7532 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 7533 power_rule->max_eirp) || 7534 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 7535 reg_rule->dfs_cac_ms)) 7536 goto nla_put_failure; 7537 7538 nla_nest_end(msg, nl_reg_rule); 7539 } 7540 7541 nla_nest_end(msg, nl_reg_rules); 7542 return 0; 7543 7544 nla_put_failure: 7545 return -EMSGSIZE; 7546 } 7547 7548 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 7549 { 7550 const struct ieee80211_regdomain *regdom = NULL; 7551 struct cfg80211_registered_device *rdev; 7552 struct wiphy *wiphy = NULL; 7553 struct sk_buff *msg; 7554 void *hdr; 7555 7556 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7557 if (!msg) 7558 return -ENOBUFS; 7559 7560 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7561 NL80211_CMD_GET_REG); 7562 if (!hdr) 7563 goto put_failure; 7564 7565 if (info->attrs[NL80211_ATTR_WIPHY]) { 7566 bool self_managed; 7567 7568 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 7569 if (IS_ERR(rdev)) { 7570 nlmsg_free(msg); 7571 return PTR_ERR(rdev); 7572 } 7573 7574 wiphy = &rdev->wiphy; 7575 self_managed = wiphy->regulatory_flags & 7576 REGULATORY_WIPHY_SELF_MANAGED; 7577 regdom = get_wiphy_regdom(wiphy); 7578 7579 /* a self-managed-reg device must have a private regdom */ 7580 if (WARN_ON(!regdom && self_managed)) { 7581 nlmsg_free(msg); 7582 return -EINVAL; 7583 } 7584 7585 if (regdom && 7586 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 7587 goto nla_put_failure; 7588 } 7589 7590 if (!wiphy && reg_last_request_cell_base() && 7591 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 7592 NL80211_USER_REG_HINT_CELL_BASE)) 7593 goto nla_put_failure; 7594 7595 rcu_read_lock(); 7596 7597 if (!regdom) 7598 regdom = rcu_dereference(cfg80211_regdomain); 7599 7600 if (nl80211_put_regdom(regdom, msg)) 7601 goto nla_put_failure_rcu; 7602 7603 rcu_read_unlock(); 7604 7605 genlmsg_end(msg, hdr); 7606 return genlmsg_reply(msg, info); 7607 7608 nla_put_failure_rcu: 7609 rcu_read_unlock(); 7610 nla_put_failure: 7611 put_failure: 7612 nlmsg_free(msg); 7613 return -EMSGSIZE; 7614 } 7615 7616 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 7617 u32 seq, int flags, struct wiphy *wiphy, 7618 const struct ieee80211_regdomain *regdom) 7619 { 7620 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 7621 NL80211_CMD_GET_REG); 7622 7623 if (!hdr) 7624 return -1; 7625 7626 genl_dump_check_consistent(cb, hdr); 7627 7628 if (nl80211_put_regdom(regdom, msg)) 7629 goto nla_put_failure; 7630 7631 if (!wiphy && reg_last_request_cell_base() && 7632 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 7633 NL80211_USER_REG_HINT_CELL_BASE)) 7634 goto nla_put_failure; 7635 7636 if (wiphy && 7637 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 7638 goto nla_put_failure; 7639 7640 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 7641 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 7642 goto nla_put_failure; 7643 7644 genlmsg_end(msg, hdr); 7645 return 0; 7646 7647 nla_put_failure: 7648 genlmsg_cancel(msg, hdr); 7649 return -EMSGSIZE; 7650 } 7651 7652 static int nl80211_get_reg_dump(struct sk_buff *skb, 7653 struct netlink_callback *cb) 7654 { 7655 const struct ieee80211_regdomain *regdom = NULL; 7656 struct cfg80211_registered_device *rdev; 7657 int err, reg_idx, start = cb->args[2]; 7658 7659 rtnl_lock(); 7660 7661 if (cfg80211_regdomain && start == 0) { 7662 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 7663 NLM_F_MULTI, NULL, 7664 rtnl_dereference(cfg80211_regdomain)); 7665 if (err < 0) 7666 goto out_err; 7667 } 7668 7669 /* the global regdom is idx 0 */ 7670 reg_idx = 1; 7671 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 7672 regdom = get_wiphy_regdom(&rdev->wiphy); 7673 if (!regdom) 7674 continue; 7675 7676 if (++reg_idx <= start) 7677 continue; 7678 7679 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 7680 NLM_F_MULTI, &rdev->wiphy, regdom); 7681 if (err < 0) { 7682 reg_idx--; 7683 break; 7684 } 7685 } 7686 7687 cb->args[2] = reg_idx; 7688 err = skb->len; 7689 out_err: 7690 rtnl_unlock(); 7691 return err; 7692 } 7693 7694 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 7695 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 7696 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 7697 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 7698 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 7699 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 7700 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 7701 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 7702 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 7703 }; 7704 7705 static int parse_reg_rule(struct nlattr *tb[], 7706 struct ieee80211_reg_rule *reg_rule) 7707 { 7708 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 7709 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 7710 7711 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 7712 return -EINVAL; 7713 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 7714 return -EINVAL; 7715 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 7716 return -EINVAL; 7717 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 7718 return -EINVAL; 7719 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 7720 return -EINVAL; 7721 7722 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 7723 7724 freq_range->start_freq_khz = 7725 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 7726 freq_range->end_freq_khz = 7727 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 7728 freq_range->max_bandwidth_khz = 7729 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 7730 7731 power_rule->max_eirp = 7732 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 7733 7734 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 7735 power_rule->max_antenna_gain = 7736 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 7737 7738 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 7739 reg_rule->dfs_cac_ms = 7740 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 7741 7742 return 0; 7743 } 7744 7745 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 7746 { 7747 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 7748 struct nlattr *nl_reg_rule; 7749 char *alpha2; 7750 int rem_reg_rules, r; 7751 u32 num_rules = 0, rule_idx = 0; 7752 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 7753 struct ieee80211_regdomain *rd; 7754 7755 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 7756 return -EINVAL; 7757 7758 if (!info->attrs[NL80211_ATTR_REG_RULES]) 7759 return -EINVAL; 7760 7761 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 7762 7763 if (info->attrs[NL80211_ATTR_DFS_REGION]) 7764 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 7765 7766 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 7767 rem_reg_rules) { 7768 num_rules++; 7769 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 7770 return -EINVAL; 7771 } 7772 7773 if (!reg_is_valid_request(alpha2)) 7774 return -EINVAL; 7775 7776 rd = kzalloc(struct_size(rd, reg_rules, num_rules), GFP_KERNEL); 7777 if (!rd) 7778 return -ENOMEM; 7779 7780 rd->n_reg_rules = num_rules; 7781 rd->alpha2[0] = alpha2[0]; 7782 rd->alpha2[1] = alpha2[1]; 7783 7784 /* 7785 * Disable DFS master mode if the DFS region was 7786 * not supported or known on this kernel. 7787 */ 7788 if (reg_supported_dfs_region(dfs_region)) 7789 rd->dfs_region = dfs_region; 7790 7791 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 7792 rem_reg_rules) { 7793 r = nla_parse_nested_deprecated(tb, NL80211_REG_RULE_ATTR_MAX, 7794 nl_reg_rule, reg_rule_policy, 7795 info->extack); 7796 if (r) 7797 goto bad_reg; 7798 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 7799 if (r) 7800 goto bad_reg; 7801 7802 rule_idx++; 7803 7804 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 7805 r = -EINVAL; 7806 goto bad_reg; 7807 } 7808 } 7809 7810 /* set_regdom takes ownership of rd */ 7811 return set_regdom(rd, REGD_SOURCE_CRDA); 7812 bad_reg: 7813 kfree(rd); 7814 return r; 7815 } 7816 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 7817 7818 static int validate_scan_freqs(struct nlattr *freqs) 7819 { 7820 struct nlattr *attr1, *attr2; 7821 int n_channels = 0, tmp1, tmp2; 7822 7823 nla_for_each_nested(attr1, freqs, tmp1) 7824 if (nla_len(attr1) != sizeof(u32)) 7825 return 0; 7826 7827 nla_for_each_nested(attr1, freqs, tmp1) { 7828 n_channels++; 7829 /* 7830 * Some hardware has a limited channel list for 7831 * scanning, and it is pretty much nonsensical 7832 * to scan for a channel twice, so disallow that 7833 * and don't require drivers to check that the 7834 * channel list they get isn't longer than what 7835 * they can scan, as long as they can scan all 7836 * the channels they registered at once. 7837 */ 7838 nla_for_each_nested(attr2, freqs, tmp2) 7839 if (attr1 != attr2 && 7840 nla_get_u32(attr1) == nla_get_u32(attr2)) 7841 return 0; 7842 } 7843 7844 return n_channels; 7845 } 7846 7847 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 7848 { 7849 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 7850 } 7851 7852 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 7853 struct cfg80211_bss_selection *bss_select) 7854 { 7855 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 7856 struct nlattr *nest; 7857 int err; 7858 bool found = false; 7859 int i; 7860 7861 /* only process one nested attribute */ 7862 nest = nla_data(nla); 7863 if (!nla_ok(nest, nla_len(nest))) 7864 return -EINVAL; 7865 7866 err = nla_parse_nested_deprecated(attr, NL80211_BSS_SELECT_ATTR_MAX, 7867 nest, nl80211_bss_select_policy, 7868 NULL); 7869 if (err) 7870 return err; 7871 7872 /* only one attribute may be given */ 7873 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 7874 if (attr[i]) { 7875 if (found) 7876 return -EINVAL; 7877 found = true; 7878 } 7879 } 7880 7881 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 7882 7883 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 7884 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 7885 7886 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 7887 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 7888 bss_select->param.band_pref = 7889 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 7890 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 7891 return -EINVAL; 7892 } 7893 7894 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 7895 struct nl80211_bss_select_rssi_adjust *adj_param; 7896 7897 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 7898 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 7899 bss_select->param.adjust.band = adj_param->band; 7900 bss_select->param.adjust.delta = adj_param->delta; 7901 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 7902 return -EINVAL; 7903 } 7904 7905 /* user-space did not provide behaviour attribute */ 7906 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 7907 return -EINVAL; 7908 7909 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 7910 return -EINVAL; 7911 7912 return 0; 7913 } 7914 7915 int nl80211_parse_random_mac(struct nlattr **attrs, 7916 u8 *mac_addr, u8 *mac_addr_mask) 7917 { 7918 int i; 7919 7920 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 7921 eth_zero_addr(mac_addr); 7922 eth_zero_addr(mac_addr_mask); 7923 mac_addr[0] = 0x2; 7924 mac_addr_mask[0] = 0x3; 7925 7926 return 0; 7927 } 7928 7929 /* need both or none */ 7930 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 7931 return -EINVAL; 7932 7933 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 7934 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 7935 7936 /* don't allow or configure an mcast address */ 7937 if (!is_multicast_ether_addr(mac_addr_mask) || 7938 is_multicast_ether_addr(mac_addr)) 7939 return -EINVAL; 7940 7941 /* 7942 * allow users to pass a MAC address that has bits set outside 7943 * of the mask, but don't bother drivers with having to deal 7944 * with such bits 7945 */ 7946 for (i = 0; i < ETH_ALEN; i++) 7947 mac_addr[i] &= mac_addr_mask[i]; 7948 7949 return 0; 7950 } 7951 7952 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev) 7953 { 7954 ASSERT_WDEV_LOCK(wdev); 7955 7956 if (!cfg80211_beaconing_iface_active(wdev)) 7957 return true; 7958 7959 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR)) 7960 return true; 7961 7962 return regulatory_pre_cac_allowed(wdev->wiphy); 7963 } 7964 7965 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag, 7966 enum nl80211_ext_feature_index feat) 7967 { 7968 if (!(flags & flag)) 7969 return true; 7970 if (wiphy_ext_feature_isset(wiphy, feat)) 7971 return true; 7972 return false; 7973 } 7974 7975 static int 7976 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, 7977 void *request, struct nlattr **attrs, 7978 bool is_sched_scan) 7979 { 7980 u8 *mac_addr, *mac_addr_mask; 7981 u32 *flags; 7982 enum nl80211_feature_flags randomness_flag; 7983 7984 if (!attrs[NL80211_ATTR_SCAN_FLAGS]) 7985 return 0; 7986 7987 if (is_sched_scan) { 7988 struct cfg80211_sched_scan_request *req = request; 7989 7990 randomness_flag = wdev ? 7991 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR : 7992 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 7993 flags = &req->flags; 7994 mac_addr = req->mac_addr; 7995 mac_addr_mask = req->mac_addr_mask; 7996 } else { 7997 struct cfg80211_scan_request *req = request; 7998 7999 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 8000 flags = &req->flags; 8001 mac_addr = req->mac_addr; 8002 mac_addr_mask = req->mac_addr_mask; 8003 } 8004 8005 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); 8006 8007 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 8008 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 8009 !nl80211_check_scan_feat(wiphy, *flags, 8010 NL80211_SCAN_FLAG_LOW_SPAN, 8011 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) || 8012 !nl80211_check_scan_feat(wiphy, *flags, 8013 NL80211_SCAN_FLAG_LOW_POWER, 8014 NL80211_EXT_FEATURE_LOW_POWER_SCAN) || 8015 !nl80211_check_scan_feat(wiphy, *flags, 8016 NL80211_SCAN_FLAG_HIGH_ACCURACY, 8017 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) || 8018 !nl80211_check_scan_feat(wiphy, *flags, 8019 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME, 8020 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) || 8021 !nl80211_check_scan_feat(wiphy, *flags, 8022 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP, 8023 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) || 8024 !nl80211_check_scan_feat(wiphy, *flags, 8025 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION, 8026 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) || 8027 !nl80211_check_scan_feat(wiphy, *flags, 8028 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE, 8029 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) || 8030 !nl80211_check_scan_feat(wiphy, *flags, 8031 NL80211_SCAN_FLAG_RANDOM_SN, 8032 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) || 8033 !nl80211_check_scan_feat(wiphy, *flags, 8034 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT, 8035 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT)) 8036 return -EOPNOTSUPP; 8037 8038 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 8039 int err; 8040 8041 if (!(wiphy->features & randomness_flag) || 8042 (wdev && wdev->current_bss)) 8043 return -EOPNOTSUPP; 8044 8045 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask); 8046 if (err) 8047 return err; 8048 } 8049 8050 return 0; 8051 } 8052 8053 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 8054 { 8055 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8056 struct wireless_dev *wdev = info->user_ptr[1]; 8057 struct cfg80211_scan_request *request; 8058 struct nlattr *scan_freqs = NULL; 8059 bool scan_freqs_khz = false; 8060 struct nlattr *attr; 8061 struct wiphy *wiphy; 8062 int err, tmp, n_ssids = 0, n_channels, i; 8063 size_t ie_len; 8064 8065 wiphy = &rdev->wiphy; 8066 8067 if (wdev->iftype == NL80211_IFTYPE_NAN) 8068 return -EOPNOTSUPP; 8069 8070 if (!rdev->ops->scan) 8071 return -EOPNOTSUPP; 8072 8073 if (rdev->scan_req || rdev->scan_msg) 8074 return -EBUSY; 8075 8076 if (info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]) { 8077 if (!wiphy_ext_feature_isset(wiphy, 8078 NL80211_EXT_FEATURE_SCAN_FREQ_KHZ)) 8079 return -EOPNOTSUPP; 8080 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQ_KHZ]; 8081 scan_freqs_khz = true; 8082 } else if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) 8083 scan_freqs = info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]; 8084 8085 if (scan_freqs) { 8086 n_channels = validate_scan_freqs(scan_freqs); 8087 if (!n_channels) 8088 return -EINVAL; 8089 } else { 8090 n_channels = ieee80211_get_num_supported_channels(wiphy); 8091 } 8092 8093 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 8094 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 8095 n_ssids++; 8096 8097 if (n_ssids > wiphy->max_scan_ssids) 8098 return -EINVAL; 8099 8100 if (info->attrs[NL80211_ATTR_IE]) 8101 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8102 else 8103 ie_len = 0; 8104 8105 if (ie_len > wiphy->max_scan_ie_len) 8106 return -EINVAL; 8107 8108 request = kzalloc(sizeof(*request) 8109 + sizeof(*request->ssids) * n_ssids 8110 + sizeof(*request->channels) * n_channels 8111 + ie_len, GFP_KERNEL); 8112 if (!request) 8113 return -ENOMEM; 8114 8115 if (n_ssids) 8116 request->ssids = (void *)&request->channels[n_channels]; 8117 request->n_ssids = n_ssids; 8118 if (ie_len) { 8119 if (n_ssids) 8120 request->ie = (void *)(request->ssids + n_ssids); 8121 else 8122 request->ie = (void *)(request->channels + n_channels); 8123 } 8124 8125 i = 0; 8126 if (scan_freqs) { 8127 /* user specified, bail out if channel not found */ 8128 nla_for_each_nested(attr, scan_freqs, tmp) { 8129 struct ieee80211_channel *chan; 8130 int freq = nla_get_u32(attr); 8131 8132 if (!scan_freqs_khz) 8133 freq = MHZ_TO_KHZ(freq); 8134 8135 chan = ieee80211_get_channel_khz(wiphy, freq); 8136 if (!chan) { 8137 err = -EINVAL; 8138 goto out_free; 8139 } 8140 8141 /* ignore disabled channels */ 8142 if (chan->flags & IEEE80211_CHAN_DISABLED) 8143 continue; 8144 8145 request->channels[i] = chan; 8146 i++; 8147 } 8148 } else { 8149 enum nl80211_band band; 8150 8151 /* all channels */ 8152 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8153 int j; 8154 8155 if (!wiphy->bands[band]) 8156 continue; 8157 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 8158 struct ieee80211_channel *chan; 8159 8160 chan = &wiphy->bands[band]->channels[j]; 8161 8162 if (chan->flags & IEEE80211_CHAN_DISABLED) 8163 continue; 8164 8165 request->channels[i] = chan; 8166 i++; 8167 } 8168 } 8169 } 8170 8171 if (!i) { 8172 err = -EINVAL; 8173 goto out_free; 8174 } 8175 8176 request->n_channels = i; 8177 8178 wdev_lock(wdev); 8179 if (!cfg80211_off_channel_oper_allowed(wdev)) { 8180 struct ieee80211_channel *chan; 8181 8182 if (request->n_channels != 1) { 8183 wdev_unlock(wdev); 8184 err = -EBUSY; 8185 goto out_free; 8186 } 8187 8188 chan = request->channels[0]; 8189 if (chan->center_freq != wdev->chandef.chan->center_freq) { 8190 wdev_unlock(wdev); 8191 err = -EBUSY; 8192 goto out_free; 8193 } 8194 } 8195 wdev_unlock(wdev); 8196 8197 i = 0; 8198 if (n_ssids) { 8199 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 8200 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 8201 err = -EINVAL; 8202 goto out_free; 8203 } 8204 request->ssids[i].ssid_len = nla_len(attr); 8205 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 8206 i++; 8207 } 8208 } 8209 8210 if (info->attrs[NL80211_ATTR_IE]) { 8211 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8212 memcpy((void *)request->ie, 8213 nla_data(info->attrs[NL80211_ATTR_IE]), 8214 request->ie_len); 8215 } 8216 8217 for (i = 0; i < NUM_NL80211_BANDS; i++) 8218 if (wiphy->bands[i]) 8219 request->rates[i] = 8220 (1 << wiphy->bands[i]->n_bitrates) - 1; 8221 8222 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 8223 nla_for_each_nested(attr, 8224 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 8225 tmp) { 8226 enum nl80211_band band = nla_type(attr); 8227 8228 if (band < 0 || band >= NUM_NL80211_BANDS) { 8229 err = -EINVAL; 8230 goto out_free; 8231 } 8232 8233 if (!wiphy->bands[band]) 8234 continue; 8235 8236 err = ieee80211_get_ratemask(wiphy->bands[band], 8237 nla_data(attr), 8238 nla_len(attr), 8239 &request->rates[band]); 8240 if (err) 8241 goto out_free; 8242 } 8243 } 8244 8245 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 8246 if (!wiphy_ext_feature_isset(wiphy, 8247 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 8248 err = -EOPNOTSUPP; 8249 goto out_free; 8250 } 8251 8252 request->duration = 8253 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 8254 request->duration_mandatory = 8255 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 8256 } 8257 8258 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs, 8259 false); 8260 if (err) 8261 goto out_free; 8262 8263 request->no_cck = 8264 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8265 8266 /* Initial implementation used NL80211_ATTR_MAC to set the specific 8267 * BSSID to scan for. This was problematic because that same attribute 8268 * was already used for another purpose (local random MAC address). The 8269 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 8270 * compatibility with older userspace components, also use the 8271 * NL80211_ATTR_MAC value here if it can be determined to be used for 8272 * the specific BSSID use case instead of the random MAC address 8273 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 8274 */ 8275 if (info->attrs[NL80211_ATTR_BSSID]) 8276 memcpy(request->bssid, 8277 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 8278 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 8279 info->attrs[NL80211_ATTR_MAC]) 8280 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 8281 ETH_ALEN); 8282 else 8283 eth_broadcast_addr(request->bssid); 8284 8285 request->wdev = wdev; 8286 request->wiphy = &rdev->wiphy; 8287 request->scan_start = jiffies; 8288 8289 rdev->scan_req = request; 8290 err = cfg80211_scan(rdev); 8291 8292 if (err) 8293 goto out_free; 8294 8295 nl80211_send_scan_start(rdev, wdev); 8296 if (wdev->netdev) 8297 dev_hold(wdev->netdev); 8298 8299 return 0; 8300 8301 out_free: 8302 rdev->scan_req = NULL; 8303 kfree(request); 8304 8305 return err; 8306 } 8307 8308 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 8309 { 8310 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8311 struct wireless_dev *wdev = info->user_ptr[1]; 8312 8313 if (!rdev->ops->abort_scan) 8314 return -EOPNOTSUPP; 8315 8316 if (rdev->scan_msg) 8317 return 0; 8318 8319 if (!rdev->scan_req) 8320 return -ENOENT; 8321 8322 rdev_abort_scan(rdev, wdev); 8323 return 0; 8324 } 8325 8326 static int 8327 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 8328 struct cfg80211_sched_scan_request *request, 8329 struct nlattr **attrs) 8330 { 8331 int tmp, err, i = 0; 8332 struct nlattr *attr; 8333 8334 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 8335 u32 interval; 8336 8337 /* 8338 * If scan plans are not specified, 8339 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 8340 * case one scan plan will be set with the specified scan 8341 * interval and infinite number of iterations. 8342 */ 8343 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 8344 if (!interval) 8345 return -EINVAL; 8346 8347 request->scan_plans[0].interval = 8348 DIV_ROUND_UP(interval, MSEC_PER_SEC); 8349 if (!request->scan_plans[0].interval) 8350 return -EINVAL; 8351 8352 if (request->scan_plans[0].interval > 8353 wiphy->max_sched_scan_plan_interval) 8354 request->scan_plans[0].interval = 8355 wiphy->max_sched_scan_plan_interval; 8356 8357 return 0; 8358 } 8359 8360 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 8361 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 8362 8363 if (WARN_ON(i >= n_plans)) 8364 return -EINVAL; 8365 8366 err = nla_parse_nested_deprecated(plan, 8367 NL80211_SCHED_SCAN_PLAN_MAX, 8368 attr, nl80211_plan_policy, 8369 NULL); 8370 if (err) 8371 return err; 8372 8373 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 8374 return -EINVAL; 8375 8376 request->scan_plans[i].interval = 8377 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 8378 if (!request->scan_plans[i].interval || 8379 request->scan_plans[i].interval > 8380 wiphy->max_sched_scan_plan_interval) 8381 return -EINVAL; 8382 8383 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 8384 request->scan_plans[i].iterations = 8385 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 8386 if (!request->scan_plans[i].iterations || 8387 (request->scan_plans[i].iterations > 8388 wiphy->max_sched_scan_plan_iterations)) 8389 return -EINVAL; 8390 } else if (i < n_plans - 1) { 8391 /* 8392 * All scan plans but the last one must specify 8393 * a finite number of iterations 8394 */ 8395 return -EINVAL; 8396 } 8397 8398 i++; 8399 } 8400 8401 /* 8402 * The last scan plan must not specify the number of 8403 * iterations, it is supposed to run infinitely 8404 */ 8405 if (request->scan_plans[n_plans - 1].iterations) 8406 return -EINVAL; 8407 8408 return 0; 8409 } 8410 8411 static int 8412 nl80211_parse_sched_scan_per_band_rssi(struct wiphy *wiphy, 8413 struct cfg80211_match_set *match_sets, 8414 struct nlattr *tb_band_rssi, 8415 s32 rssi_thold) 8416 { 8417 struct nlattr *attr; 8418 int i, tmp, ret = 0; 8419 8420 if (!wiphy_ext_feature_isset(wiphy, 8421 NL80211_EXT_FEATURE_SCHED_SCAN_BAND_SPECIFIC_RSSI_THOLD)) { 8422 if (tb_band_rssi) 8423 ret = -EOPNOTSUPP; 8424 else 8425 for (i = 0; i < NUM_NL80211_BANDS; i++) 8426 match_sets->per_band_rssi_thold[i] = 8427 NL80211_SCAN_RSSI_THOLD_OFF; 8428 return ret; 8429 } 8430 8431 for (i = 0; i < NUM_NL80211_BANDS; i++) 8432 match_sets->per_band_rssi_thold[i] = rssi_thold; 8433 8434 nla_for_each_nested(attr, tb_band_rssi, tmp) { 8435 enum nl80211_band band = nla_type(attr); 8436 8437 if (band < 0 || band >= NUM_NL80211_BANDS) 8438 return -EINVAL; 8439 8440 match_sets->per_band_rssi_thold[band] = nla_get_s32(attr); 8441 } 8442 8443 return 0; 8444 } 8445 8446 static struct cfg80211_sched_scan_request * 8447 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 8448 struct nlattr **attrs, int max_match_sets) 8449 { 8450 struct cfg80211_sched_scan_request *request; 8451 struct nlattr *attr; 8452 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 8453 enum nl80211_band band; 8454 size_t ie_len; 8455 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 8456 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 8457 8458 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 8459 n_channels = validate_scan_freqs( 8460 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 8461 if (!n_channels) 8462 return ERR_PTR(-EINVAL); 8463 } else { 8464 n_channels = ieee80211_get_num_supported_channels(wiphy); 8465 } 8466 8467 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 8468 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 8469 tmp) 8470 n_ssids++; 8471 8472 if (n_ssids > wiphy->max_sched_scan_ssids) 8473 return ERR_PTR(-EINVAL); 8474 8475 /* 8476 * First, count the number of 'real' matchsets. Due to an issue with 8477 * the old implementation, matchsets containing only the RSSI attribute 8478 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 8479 * RSSI for all matchsets, rather than their own matchset for reporting 8480 * all APs with a strong RSSI. This is needed to be compatible with 8481 * older userspace that treated a matchset with only the RSSI as the 8482 * global RSSI for all other matchsets - if there are other matchsets. 8483 */ 8484 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 8485 nla_for_each_nested(attr, 8486 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 8487 tmp) { 8488 struct nlattr *rssi; 8489 8490 err = nla_parse_nested_deprecated(tb, 8491 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 8492 attr, 8493 nl80211_match_policy, 8494 NULL); 8495 if (err) 8496 return ERR_PTR(err); 8497 8498 /* SSID and BSSID are mutually exclusive */ 8499 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 8500 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 8501 return ERR_PTR(-EINVAL); 8502 8503 /* add other standalone attributes here */ 8504 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 8505 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 8506 n_match_sets++; 8507 continue; 8508 } 8509 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 8510 if (rssi) 8511 default_match_rssi = nla_get_s32(rssi); 8512 } 8513 } 8514 8515 /* However, if there's no other matchset, add the RSSI one */ 8516 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 8517 n_match_sets = 1; 8518 8519 if (n_match_sets > max_match_sets) 8520 return ERR_PTR(-EINVAL); 8521 8522 if (attrs[NL80211_ATTR_IE]) 8523 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 8524 else 8525 ie_len = 0; 8526 8527 if (ie_len > wiphy->max_sched_scan_ie_len) 8528 return ERR_PTR(-EINVAL); 8529 8530 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 8531 /* 8532 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 8533 * each scan plan already specifies its own interval 8534 */ 8535 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 8536 return ERR_PTR(-EINVAL); 8537 8538 nla_for_each_nested(attr, 8539 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 8540 n_plans++; 8541 } else { 8542 /* 8543 * The scan interval attribute is kept for backward 8544 * compatibility. If no scan plans are specified and sched scan 8545 * interval is specified, one scan plan will be set with this 8546 * scan interval and infinite number of iterations. 8547 */ 8548 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 8549 return ERR_PTR(-EINVAL); 8550 8551 n_plans = 1; 8552 } 8553 8554 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 8555 return ERR_PTR(-EINVAL); 8556 8557 if (!wiphy_ext_feature_isset( 8558 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 8559 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 8560 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 8561 return ERR_PTR(-EINVAL); 8562 8563 request = kzalloc(sizeof(*request) 8564 + sizeof(*request->ssids) * n_ssids 8565 + sizeof(*request->match_sets) * n_match_sets 8566 + sizeof(*request->scan_plans) * n_plans 8567 + sizeof(*request->channels) * n_channels 8568 + ie_len, GFP_KERNEL); 8569 if (!request) 8570 return ERR_PTR(-ENOMEM); 8571 8572 if (n_ssids) 8573 request->ssids = (void *)&request->channels[n_channels]; 8574 request->n_ssids = n_ssids; 8575 if (ie_len) { 8576 if (n_ssids) 8577 request->ie = (void *)(request->ssids + n_ssids); 8578 else 8579 request->ie = (void *)(request->channels + n_channels); 8580 } 8581 8582 if (n_match_sets) { 8583 if (request->ie) 8584 request->match_sets = (void *)(request->ie + ie_len); 8585 else if (n_ssids) 8586 request->match_sets = 8587 (void *)(request->ssids + n_ssids); 8588 else 8589 request->match_sets = 8590 (void *)(request->channels + n_channels); 8591 } 8592 request->n_match_sets = n_match_sets; 8593 8594 if (n_match_sets) 8595 request->scan_plans = (void *)(request->match_sets + 8596 n_match_sets); 8597 else if (request->ie) 8598 request->scan_plans = (void *)(request->ie + ie_len); 8599 else if (n_ssids) 8600 request->scan_plans = (void *)(request->ssids + n_ssids); 8601 else 8602 request->scan_plans = (void *)(request->channels + n_channels); 8603 8604 request->n_scan_plans = n_plans; 8605 8606 i = 0; 8607 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 8608 /* user specified, bail out if channel not found */ 8609 nla_for_each_nested(attr, 8610 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 8611 tmp) { 8612 struct ieee80211_channel *chan; 8613 8614 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 8615 8616 if (!chan) { 8617 err = -EINVAL; 8618 goto out_free; 8619 } 8620 8621 /* ignore disabled channels */ 8622 if (chan->flags & IEEE80211_CHAN_DISABLED) 8623 continue; 8624 8625 request->channels[i] = chan; 8626 i++; 8627 } 8628 } else { 8629 /* all channels */ 8630 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8631 int j; 8632 8633 if (!wiphy->bands[band]) 8634 continue; 8635 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 8636 struct ieee80211_channel *chan; 8637 8638 chan = &wiphy->bands[band]->channels[j]; 8639 8640 if (chan->flags & IEEE80211_CHAN_DISABLED) 8641 continue; 8642 8643 request->channels[i] = chan; 8644 i++; 8645 } 8646 } 8647 } 8648 8649 if (!i) { 8650 err = -EINVAL; 8651 goto out_free; 8652 } 8653 8654 request->n_channels = i; 8655 8656 i = 0; 8657 if (n_ssids) { 8658 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 8659 tmp) { 8660 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 8661 err = -EINVAL; 8662 goto out_free; 8663 } 8664 request->ssids[i].ssid_len = nla_len(attr); 8665 memcpy(request->ssids[i].ssid, nla_data(attr), 8666 nla_len(attr)); 8667 i++; 8668 } 8669 } 8670 8671 i = 0; 8672 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 8673 nla_for_each_nested(attr, 8674 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 8675 tmp) { 8676 struct nlattr *ssid, *bssid, *rssi; 8677 8678 err = nla_parse_nested_deprecated(tb, 8679 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 8680 attr, 8681 nl80211_match_policy, 8682 NULL); 8683 if (err) 8684 goto out_free; 8685 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 8686 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 8687 8688 if (!ssid && !bssid) { 8689 i++; 8690 continue; 8691 } 8692 8693 if (WARN_ON(i >= n_match_sets)) { 8694 /* this indicates a programming error, 8695 * the loop above should have verified 8696 * things properly 8697 */ 8698 err = -EINVAL; 8699 goto out_free; 8700 } 8701 8702 if (ssid) { 8703 memcpy(request->match_sets[i].ssid.ssid, 8704 nla_data(ssid), nla_len(ssid)); 8705 request->match_sets[i].ssid.ssid_len = 8706 nla_len(ssid); 8707 } 8708 if (bssid) 8709 memcpy(request->match_sets[i].bssid, 8710 nla_data(bssid), ETH_ALEN); 8711 8712 /* special attribute - old implementation w/a */ 8713 request->match_sets[i].rssi_thold = default_match_rssi; 8714 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 8715 if (rssi) 8716 request->match_sets[i].rssi_thold = 8717 nla_get_s32(rssi); 8718 8719 /* Parse per band RSSI attribute */ 8720 err = nl80211_parse_sched_scan_per_band_rssi(wiphy, 8721 &request->match_sets[i], 8722 tb[NL80211_SCHED_SCAN_MATCH_PER_BAND_RSSI], 8723 request->match_sets[i].rssi_thold); 8724 if (err) 8725 goto out_free; 8726 8727 i++; 8728 } 8729 8730 /* there was no other matchset, so the RSSI one is alone */ 8731 if (i == 0 && n_match_sets) 8732 request->match_sets[0].rssi_thold = default_match_rssi; 8733 8734 request->min_rssi_thold = INT_MAX; 8735 for (i = 0; i < n_match_sets; i++) 8736 request->min_rssi_thold = 8737 min(request->match_sets[i].rssi_thold, 8738 request->min_rssi_thold); 8739 } else { 8740 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 8741 } 8742 8743 if (ie_len) { 8744 request->ie_len = ie_len; 8745 memcpy((void *)request->ie, 8746 nla_data(attrs[NL80211_ATTR_IE]), 8747 request->ie_len); 8748 } 8749 8750 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true); 8751 if (err) 8752 goto out_free; 8753 8754 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 8755 request->delay = 8756 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 8757 8758 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 8759 request->relative_rssi = nla_get_s8( 8760 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 8761 request->relative_rssi_set = true; 8762 } 8763 8764 if (request->relative_rssi_set && 8765 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 8766 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 8767 8768 rssi_adjust = nla_data( 8769 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 8770 request->rssi_adjust.band = rssi_adjust->band; 8771 request->rssi_adjust.delta = rssi_adjust->delta; 8772 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 8773 err = -EINVAL; 8774 goto out_free; 8775 } 8776 } 8777 8778 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 8779 if (err) 8780 goto out_free; 8781 8782 request->scan_start = jiffies; 8783 8784 return request; 8785 8786 out_free: 8787 kfree(request); 8788 return ERR_PTR(err); 8789 } 8790 8791 static int nl80211_start_sched_scan(struct sk_buff *skb, 8792 struct genl_info *info) 8793 { 8794 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8795 struct net_device *dev = info->user_ptr[1]; 8796 struct wireless_dev *wdev = dev->ieee80211_ptr; 8797 struct cfg80211_sched_scan_request *sched_scan_req; 8798 bool want_multi; 8799 int err; 8800 8801 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 8802 return -EOPNOTSUPP; 8803 8804 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 8805 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 8806 if (err) 8807 return err; 8808 8809 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 8810 info->attrs, 8811 rdev->wiphy.max_match_sets); 8812 8813 err = PTR_ERR_OR_ZERO(sched_scan_req); 8814 if (err) 8815 goto out_err; 8816 8817 /* leave request id zero for legacy request 8818 * or if driver does not support multi-scheduled scan 8819 */ 8820 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) 8821 sched_scan_req->reqid = cfg80211_assign_cookie(rdev); 8822 8823 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 8824 if (err) 8825 goto out_free; 8826 8827 sched_scan_req->dev = dev; 8828 sched_scan_req->wiphy = &rdev->wiphy; 8829 8830 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 8831 sched_scan_req->owner_nlportid = info->snd_portid; 8832 8833 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 8834 8835 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 8836 return 0; 8837 8838 out_free: 8839 kfree(sched_scan_req); 8840 out_err: 8841 return err; 8842 } 8843 8844 static int nl80211_stop_sched_scan(struct sk_buff *skb, 8845 struct genl_info *info) 8846 { 8847 struct cfg80211_sched_scan_request *req; 8848 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8849 u64 cookie; 8850 8851 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 8852 return -EOPNOTSUPP; 8853 8854 if (info->attrs[NL80211_ATTR_COOKIE]) { 8855 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8856 return __cfg80211_stop_sched_scan(rdev, cookie, false); 8857 } 8858 8859 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 8860 struct cfg80211_sched_scan_request, 8861 list); 8862 if (!req || req->reqid || 8863 (req->owner_nlportid && 8864 req->owner_nlportid != info->snd_portid)) 8865 return -ENOENT; 8866 8867 return cfg80211_stop_sched_scan_req(rdev, req, false); 8868 } 8869 8870 static int nl80211_start_radar_detection(struct sk_buff *skb, 8871 struct genl_info *info) 8872 { 8873 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8874 struct net_device *dev = info->user_ptr[1]; 8875 struct wireless_dev *wdev = dev->ieee80211_ptr; 8876 struct wiphy *wiphy = wdev->wiphy; 8877 struct cfg80211_chan_def chandef; 8878 enum nl80211_dfs_regions dfs_region; 8879 unsigned int cac_time_ms; 8880 int err; 8881 8882 dfs_region = reg_get_dfs_region(wiphy); 8883 if (dfs_region == NL80211_DFS_UNSET) 8884 return -EINVAL; 8885 8886 err = nl80211_parse_chandef(rdev, info, &chandef); 8887 if (err) 8888 return err; 8889 8890 if (netif_carrier_ok(dev)) 8891 return -EBUSY; 8892 8893 if (wdev->cac_started) 8894 return -EBUSY; 8895 8896 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 8897 if (err < 0) 8898 return err; 8899 8900 if (err == 0) 8901 return -EINVAL; 8902 8903 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) 8904 return -EINVAL; 8905 8906 /* CAC start is offloaded to HW and can't be started manually */ 8907 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) 8908 return -EOPNOTSUPP; 8909 8910 if (!rdev->ops->start_radar_detection) 8911 return -EOPNOTSUPP; 8912 8913 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 8914 if (WARN_ON(!cac_time_ms)) 8915 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 8916 8917 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 8918 if (!err) { 8919 wdev->chandef = chandef; 8920 wdev->cac_started = true; 8921 wdev->cac_start_time = jiffies; 8922 wdev->cac_time_ms = cac_time_ms; 8923 } 8924 return err; 8925 } 8926 8927 static int nl80211_notify_radar_detection(struct sk_buff *skb, 8928 struct genl_info *info) 8929 { 8930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8931 struct net_device *dev = info->user_ptr[1]; 8932 struct wireless_dev *wdev = dev->ieee80211_ptr; 8933 struct wiphy *wiphy = wdev->wiphy; 8934 struct cfg80211_chan_def chandef; 8935 enum nl80211_dfs_regions dfs_region; 8936 int err; 8937 8938 dfs_region = reg_get_dfs_region(wiphy); 8939 if (dfs_region == NL80211_DFS_UNSET) { 8940 GENL_SET_ERR_MSG(info, 8941 "DFS Region is not set. Unexpected Radar indication"); 8942 return -EINVAL; 8943 } 8944 8945 err = nl80211_parse_chandef(rdev, info, &chandef); 8946 if (err) { 8947 GENL_SET_ERR_MSG(info, "Unable to extract chandef info"); 8948 return err; 8949 } 8950 8951 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 8952 if (err < 0) { 8953 GENL_SET_ERR_MSG(info, "chandef is invalid"); 8954 return err; 8955 } 8956 8957 if (err == 0) { 8958 GENL_SET_ERR_MSG(info, 8959 "Unexpected Radar indication for chandef/iftype"); 8960 return -EINVAL; 8961 } 8962 8963 /* Do not process this notification if radar is already detected 8964 * by kernel on this channel, and return success. 8965 */ 8966 if (chandef.chan->dfs_state == NL80211_DFS_UNAVAILABLE) 8967 return 0; 8968 8969 cfg80211_set_dfs_state(wiphy, &chandef, NL80211_DFS_UNAVAILABLE); 8970 8971 cfg80211_sched_dfs_chan_update(rdev); 8972 8973 rdev->radar_chandef = chandef; 8974 8975 /* Propagate this notification to other radios as well */ 8976 queue_work(cfg80211_wq, &rdev->propagate_radar_detect_wk); 8977 8978 return 0; 8979 } 8980 8981 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 8982 { 8983 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8984 struct net_device *dev = info->user_ptr[1]; 8985 struct wireless_dev *wdev = dev->ieee80211_ptr; 8986 struct cfg80211_csa_settings params; 8987 /* csa_attrs is defined static to avoid waste of stack size - this 8988 * function is called under RTNL lock, so this should not be a problem. 8989 */ 8990 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 8991 int err; 8992 bool need_new_beacon = false; 8993 bool need_handle_dfs_flag = true; 8994 int len, i; 8995 u32 cs_count; 8996 8997 if (!rdev->ops->channel_switch || 8998 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 8999 return -EOPNOTSUPP; 9000 9001 switch (dev->ieee80211_ptr->iftype) { 9002 case NL80211_IFTYPE_AP: 9003 case NL80211_IFTYPE_P2P_GO: 9004 need_new_beacon = true; 9005 /* For all modes except AP the handle_dfs flag needs to be 9006 * supplied to tell the kernel that userspace will handle radar 9007 * events when they happen. Otherwise a switch to a channel 9008 * requiring DFS will be rejected. 9009 */ 9010 need_handle_dfs_flag = false; 9011 9012 /* useless if AP is not running */ 9013 if (!wdev->beacon_interval) 9014 return -ENOTCONN; 9015 break; 9016 case NL80211_IFTYPE_ADHOC: 9017 if (!wdev->ssid_len) 9018 return -ENOTCONN; 9019 break; 9020 case NL80211_IFTYPE_MESH_POINT: 9021 if (!wdev->mesh_id_len) 9022 return -ENOTCONN; 9023 break; 9024 default: 9025 return -EOPNOTSUPP; 9026 } 9027 9028 memset(¶ms, 0, sizeof(params)); 9029 params.beacon_csa.ftm_responder = -1; 9030 9031 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 9032 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 9033 return -EINVAL; 9034 9035 /* only important for AP, IBSS and mesh create IEs internally */ 9036 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 9037 return -EINVAL; 9038 9039 /* Even though the attribute is u32, the specification says 9040 * u8, so let's make sure we don't overflow. 9041 */ 9042 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 9043 if (cs_count > 255) 9044 return -EINVAL; 9045 9046 params.count = cs_count; 9047 9048 if (!need_new_beacon) 9049 goto skip_beacons; 9050 9051 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after); 9052 if (err) 9053 return err; 9054 9055 err = nla_parse_nested_deprecated(csa_attrs, NL80211_ATTR_MAX, 9056 info->attrs[NL80211_ATTR_CSA_IES], 9057 nl80211_policy, info->extack); 9058 if (err) 9059 return err; 9060 9061 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa); 9062 if (err) 9063 return err; 9064 9065 if (!csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]) 9066 return -EINVAL; 9067 9068 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]); 9069 if (!len || (len % sizeof(u16))) 9070 return -EINVAL; 9071 9072 params.n_counter_offsets_beacon = len / sizeof(u16); 9073 if (rdev->wiphy.max_num_csa_counters && 9074 (params.n_counter_offsets_beacon > 9075 rdev->wiphy.max_num_csa_counters)) 9076 return -EINVAL; 9077 9078 params.counter_offsets_beacon = 9079 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_BEACON]); 9080 9081 /* sanity checks - counters should fit and be the same */ 9082 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 9083 u16 offset = params.counter_offsets_beacon[i]; 9084 9085 if (offset >= params.beacon_csa.tail_len) 9086 return -EINVAL; 9087 9088 if (params.beacon_csa.tail[offset] != params.count) 9089 return -EINVAL; 9090 } 9091 9092 if (csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]) { 9093 len = nla_len(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]); 9094 if (!len || (len % sizeof(u16))) 9095 return -EINVAL; 9096 9097 params.n_counter_offsets_presp = len / sizeof(u16); 9098 if (rdev->wiphy.max_num_csa_counters && 9099 (params.n_counter_offsets_presp > 9100 rdev->wiphy.max_num_csa_counters)) 9101 return -EINVAL; 9102 9103 params.counter_offsets_presp = 9104 nla_data(csa_attrs[NL80211_ATTR_CNTDWN_OFFS_PRESP]); 9105 9106 /* sanity checks - counters should fit and be the same */ 9107 for (i = 0; i < params.n_counter_offsets_presp; i++) { 9108 u16 offset = params.counter_offsets_presp[i]; 9109 9110 if (offset >= params.beacon_csa.probe_resp_len) 9111 return -EINVAL; 9112 9113 if (params.beacon_csa.probe_resp[offset] != 9114 params.count) 9115 return -EINVAL; 9116 } 9117 } 9118 9119 skip_beacons: 9120 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 9121 if (err) 9122 return err; 9123 9124 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 9125 wdev->iftype)) 9126 return -EINVAL; 9127 9128 err = cfg80211_chandef_dfs_required(wdev->wiphy, 9129 ¶ms.chandef, 9130 wdev->iftype); 9131 if (err < 0) 9132 return err; 9133 9134 if (err > 0) { 9135 params.radar_required = true; 9136 if (need_handle_dfs_flag && 9137 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 9138 return -EINVAL; 9139 } 9140 } 9141 9142 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 9143 params.block_tx = true; 9144 9145 wdev_lock(wdev); 9146 err = rdev_channel_switch(rdev, dev, ¶ms); 9147 wdev_unlock(wdev); 9148 9149 return err; 9150 } 9151 9152 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 9153 u32 seq, int flags, 9154 struct cfg80211_registered_device *rdev, 9155 struct wireless_dev *wdev, 9156 struct cfg80211_internal_bss *intbss) 9157 { 9158 struct cfg80211_bss *res = &intbss->pub; 9159 const struct cfg80211_bss_ies *ies; 9160 void *hdr; 9161 struct nlattr *bss; 9162 9163 ASSERT_WDEV_LOCK(wdev); 9164 9165 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 9166 NL80211_CMD_NEW_SCAN_RESULTS); 9167 if (!hdr) 9168 return -1; 9169 9170 genl_dump_check_consistent(cb, hdr); 9171 9172 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 9173 goto nla_put_failure; 9174 if (wdev->netdev && 9175 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 9176 goto nla_put_failure; 9177 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 9178 NL80211_ATTR_PAD)) 9179 goto nla_put_failure; 9180 9181 bss = nla_nest_start_noflag(msg, NL80211_ATTR_BSS); 9182 if (!bss) 9183 goto nla_put_failure; 9184 if ((!is_zero_ether_addr(res->bssid) && 9185 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 9186 goto nla_put_failure; 9187 9188 rcu_read_lock(); 9189 /* indicate whether we have probe response data or not */ 9190 if (rcu_access_pointer(res->proberesp_ies) && 9191 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 9192 goto fail_unlock_rcu; 9193 9194 /* this pointer prefers to be pointed to probe response data 9195 * but is always valid 9196 */ 9197 ies = rcu_dereference(res->ies); 9198 if (ies) { 9199 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 9200 NL80211_BSS_PAD)) 9201 goto fail_unlock_rcu; 9202 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 9203 ies->len, ies->data)) 9204 goto fail_unlock_rcu; 9205 } 9206 9207 /* and this pointer is always (unless driver didn't know) beacon data */ 9208 ies = rcu_dereference(res->beacon_ies); 9209 if (ies && ies->from_beacon) { 9210 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 9211 NL80211_BSS_PAD)) 9212 goto fail_unlock_rcu; 9213 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 9214 ies->len, ies->data)) 9215 goto fail_unlock_rcu; 9216 } 9217 rcu_read_unlock(); 9218 9219 if (res->beacon_interval && 9220 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 9221 goto nla_put_failure; 9222 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 9223 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 9224 nla_put_u32(msg, NL80211_BSS_FREQUENCY_OFFSET, 9225 res->channel->freq_offset) || 9226 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 9227 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 9228 jiffies_to_msecs(jiffies - intbss->ts))) 9229 goto nla_put_failure; 9230 9231 if (intbss->parent_tsf && 9232 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 9233 intbss->parent_tsf, NL80211_BSS_PAD) || 9234 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 9235 intbss->parent_bssid))) 9236 goto nla_put_failure; 9237 9238 if (intbss->ts_boottime && 9239 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 9240 intbss->ts_boottime, NL80211_BSS_PAD)) 9241 goto nla_put_failure; 9242 9243 if (!nl80211_put_signal(msg, intbss->pub.chains, 9244 intbss->pub.chain_signal, 9245 NL80211_BSS_CHAIN_SIGNAL)) 9246 goto nla_put_failure; 9247 9248 switch (rdev->wiphy.signal_type) { 9249 case CFG80211_SIGNAL_TYPE_MBM: 9250 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 9251 goto nla_put_failure; 9252 break; 9253 case CFG80211_SIGNAL_TYPE_UNSPEC: 9254 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 9255 goto nla_put_failure; 9256 break; 9257 default: 9258 break; 9259 } 9260 9261 switch (wdev->iftype) { 9262 case NL80211_IFTYPE_P2P_CLIENT: 9263 case NL80211_IFTYPE_STATION: 9264 if (intbss == wdev->current_bss && 9265 nla_put_u32(msg, NL80211_BSS_STATUS, 9266 NL80211_BSS_STATUS_ASSOCIATED)) 9267 goto nla_put_failure; 9268 break; 9269 case NL80211_IFTYPE_ADHOC: 9270 if (intbss == wdev->current_bss && 9271 nla_put_u32(msg, NL80211_BSS_STATUS, 9272 NL80211_BSS_STATUS_IBSS_JOINED)) 9273 goto nla_put_failure; 9274 break; 9275 default: 9276 break; 9277 } 9278 9279 nla_nest_end(msg, bss); 9280 9281 genlmsg_end(msg, hdr); 9282 return 0; 9283 9284 fail_unlock_rcu: 9285 rcu_read_unlock(); 9286 nla_put_failure: 9287 genlmsg_cancel(msg, hdr); 9288 return -EMSGSIZE; 9289 } 9290 9291 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 9292 { 9293 struct cfg80211_registered_device *rdev; 9294 struct cfg80211_internal_bss *scan; 9295 struct wireless_dev *wdev; 9296 int start = cb->args[2], idx = 0; 9297 int err; 9298 9299 rtnl_lock(); 9300 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 9301 if (err) { 9302 rtnl_unlock(); 9303 return err; 9304 } 9305 9306 wdev_lock(wdev); 9307 spin_lock_bh(&rdev->bss_lock); 9308 9309 /* 9310 * dump_scan will be called multiple times to break up the scan results 9311 * into multiple messages. It is unlikely that any more bss-es will be 9312 * expired after the first call, so only call only call this on the 9313 * first dump_scan invocation. 9314 */ 9315 if (start == 0) 9316 cfg80211_bss_expire(rdev); 9317 9318 cb->seq = rdev->bss_generation; 9319 9320 list_for_each_entry(scan, &rdev->bss_list, list) { 9321 if (++idx <= start) 9322 continue; 9323 if (nl80211_send_bss(skb, cb, 9324 cb->nlh->nlmsg_seq, NLM_F_MULTI, 9325 rdev, wdev, scan) < 0) { 9326 idx--; 9327 break; 9328 } 9329 } 9330 9331 spin_unlock_bh(&rdev->bss_lock); 9332 wdev_unlock(wdev); 9333 9334 cb->args[2] = idx; 9335 rtnl_unlock(); 9336 9337 return skb->len; 9338 } 9339 9340 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 9341 int flags, struct net_device *dev, 9342 bool allow_radio_stats, 9343 struct survey_info *survey) 9344 { 9345 void *hdr; 9346 struct nlattr *infoattr; 9347 9348 /* skip radio stats if userspace didn't request them */ 9349 if (!survey->channel && !allow_radio_stats) 9350 return 0; 9351 9352 hdr = nl80211hdr_put(msg, portid, seq, flags, 9353 NL80211_CMD_NEW_SURVEY_RESULTS); 9354 if (!hdr) 9355 return -ENOMEM; 9356 9357 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 9358 goto nla_put_failure; 9359 9360 infoattr = nla_nest_start_noflag(msg, NL80211_ATTR_SURVEY_INFO); 9361 if (!infoattr) 9362 goto nla_put_failure; 9363 9364 if (survey->channel && 9365 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 9366 survey->channel->center_freq)) 9367 goto nla_put_failure; 9368 9369 if (survey->channel && survey->channel->freq_offset && 9370 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY_OFFSET, 9371 survey->channel->freq_offset)) 9372 goto nla_put_failure; 9373 9374 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 9375 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 9376 goto nla_put_failure; 9377 if ((survey->filled & SURVEY_INFO_IN_USE) && 9378 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 9379 goto nla_put_failure; 9380 if ((survey->filled & SURVEY_INFO_TIME) && 9381 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 9382 survey->time, NL80211_SURVEY_INFO_PAD)) 9383 goto nla_put_failure; 9384 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 9385 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 9386 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 9387 goto nla_put_failure; 9388 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 9389 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 9390 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 9391 goto nla_put_failure; 9392 if ((survey->filled & SURVEY_INFO_TIME_RX) && 9393 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 9394 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 9395 goto nla_put_failure; 9396 if ((survey->filled & SURVEY_INFO_TIME_TX) && 9397 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 9398 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 9399 goto nla_put_failure; 9400 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 9401 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 9402 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 9403 goto nla_put_failure; 9404 if ((survey->filled & SURVEY_INFO_TIME_BSS_RX) && 9405 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BSS_RX, 9406 survey->time_bss_rx, NL80211_SURVEY_INFO_PAD)) 9407 goto nla_put_failure; 9408 9409 nla_nest_end(msg, infoattr); 9410 9411 genlmsg_end(msg, hdr); 9412 return 0; 9413 9414 nla_put_failure: 9415 genlmsg_cancel(msg, hdr); 9416 return -EMSGSIZE; 9417 } 9418 9419 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 9420 { 9421 struct nlattr **attrbuf; 9422 struct survey_info survey; 9423 struct cfg80211_registered_device *rdev; 9424 struct wireless_dev *wdev; 9425 int survey_idx = cb->args[2]; 9426 int res; 9427 bool radio_stats; 9428 9429 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL); 9430 if (!attrbuf) 9431 return -ENOMEM; 9432 9433 rtnl_lock(); 9434 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 9435 if (res) 9436 goto out_err; 9437 9438 /* prepare_wdev_dump parsed the attributes */ 9439 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 9440 9441 if (!wdev->netdev) { 9442 res = -EINVAL; 9443 goto out_err; 9444 } 9445 9446 if (!rdev->ops->dump_survey) { 9447 res = -EOPNOTSUPP; 9448 goto out_err; 9449 } 9450 9451 while (1) { 9452 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 9453 if (res == -ENOENT) 9454 break; 9455 if (res) 9456 goto out_err; 9457 9458 /* don't send disabled channels, but do send non-channel data */ 9459 if (survey.channel && 9460 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 9461 survey_idx++; 9462 continue; 9463 } 9464 9465 if (nl80211_send_survey(skb, 9466 NETLINK_CB(cb->skb).portid, 9467 cb->nlh->nlmsg_seq, NLM_F_MULTI, 9468 wdev->netdev, radio_stats, &survey) < 0) 9469 goto out; 9470 survey_idx++; 9471 } 9472 9473 out: 9474 cb->args[2] = survey_idx; 9475 res = skb->len; 9476 out_err: 9477 kfree(attrbuf); 9478 rtnl_unlock(); 9479 return res; 9480 } 9481 9482 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 9483 { 9484 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 9485 NL80211_WPA_VERSION_2 | 9486 NL80211_WPA_VERSION_3)); 9487 } 9488 9489 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 9490 { 9491 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9492 struct net_device *dev = info->user_ptr[1]; 9493 struct ieee80211_channel *chan; 9494 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL; 9495 int err, ssid_len, ie_len = 0, auth_data_len = 0; 9496 enum nl80211_auth_type auth_type; 9497 struct key_parse key; 9498 bool local_state_change; 9499 u32 freq; 9500 9501 if (!info->attrs[NL80211_ATTR_MAC]) 9502 return -EINVAL; 9503 9504 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 9505 return -EINVAL; 9506 9507 if (!info->attrs[NL80211_ATTR_SSID]) 9508 return -EINVAL; 9509 9510 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9511 return -EINVAL; 9512 9513 err = nl80211_parse_key(info, &key); 9514 if (err) 9515 return err; 9516 9517 if (key.idx >= 0) { 9518 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 9519 return -EINVAL; 9520 if (!key.p.key || !key.p.key_len) 9521 return -EINVAL; 9522 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 9523 key.p.key_len != WLAN_KEY_LEN_WEP40) && 9524 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 9525 key.p.key_len != WLAN_KEY_LEN_WEP104)) 9526 return -EINVAL; 9527 if (key.idx > 3) 9528 return -EINVAL; 9529 } else { 9530 key.p.key_len = 0; 9531 key.p.key = NULL; 9532 } 9533 9534 if (key.idx >= 0) { 9535 int i; 9536 bool ok = false; 9537 9538 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 9539 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 9540 ok = true; 9541 break; 9542 } 9543 } 9544 if (!ok) 9545 return -EINVAL; 9546 } 9547 9548 if (!rdev->ops->auth) 9549 return -EOPNOTSUPP; 9550 9551 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9552 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9553 return -EOPNOTSUPP; 9554 9555 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9556 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 9557 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 9558 freq += 9559 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 9560 9561 chan = nl80211_get_valid_chan(&rdev->wiphy, freq); 9562 if (!chan) 9563 return -EINVAL; 9564 9565 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9566 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9567 9568 if (info->attrs[NL80211_ATTR_IE]) { 9569 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9570 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9571 } 9572 9573 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 9574 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 9575 return -EINVAL; 9576 9577 if ((auth_type == NL80211_AUTHTYPE_SAE || 9578 auth_type == NL80211_AUTHTYPE_FILS_SK || 9579 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 9580 auth_type == NL80211_AUTHTYPE_FILS_PK) && 9581 !info->attrs[NL80211_ATTR_AUTH_DATA]) 9582 return -EINVAL; 9583 9584 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 9585 if (auth_type != NL80211_AUTHTYPE_SAE && 9586 auth_type != NL80211_AUTHTYPE_FILS_SK && 9587 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 9588 auth_type != NL80211_AUTHTYPE_FILS_PK) 9589 return -EINVAL; 9590 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 9591 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 9592 } 9593 9594 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 9595 9596 /* 9597 * Since we no longer track auth state, ignore 9598 * requests to only change local state. 9599 */ 9600 if (local_state_change) 9601 return 0; 9602 9603 wdev_lock(dev->ieee80211_ptr); 9604 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 9605 ssid, ssid_len, ie, ie_len, 9606 key.p.key, key.p.key_len, key.idx, 9607 auth_data, auth_data_len); 9608 wdev_unlock(dev->ieee80211_ptr); 9609 return err; 9610 } 9611 9612 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev, 9613 struct genl_info *info) 9614 { 9615 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9616 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set"); 9617 return -EINVAL; 9618 } 9619 9620 if (!rdev->ops->tx_control_port || 9621 !wiphy_ext_feature_isset(&rdev->wiphy, 9622 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 9623 return -EOPNOTSUPP; 9624 9625 return 0; 9626 } 9627 9628 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 9629 struct genl_info *info, 9630 struct cfg80211_crypto_settings *settings, 9631 int cipher_limit) 9632 { 9633 memset(settings, 0, sizeof(*settings)); 9634 9635 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 9636 9637 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 9638 u16 proto; 9639 9640 proto = nla_get_u16( 9641 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 9642 settings->control_port_ethertype = cpu_to_be16(proto); 9643 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 9644 proto != ETH_P_PAE) 9645 return -EINVAL; 9646 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 9647 settings->control_port_no_encrypt = true; 9648 } else 9649 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 9650 9651 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 9652 int r = validate_pae_over_nl80211(rdev, info); 9653 9654 if (r < 0) 9655 return r; 9656 9657 settings->control_port_over_nl80211 = true; 9658 9659 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_PREAUTH]) 9660 settings->control_port_no_preauth = true; 9661 } 9662 9663 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 9664 void *data; 9665 int len, i; 9666 9667 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 9668 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 9669 settings->n_ciphers_pairwise = len / sizeof(u32); 9670 9671 if (len % sizeof(u32)) 9672 return -EINVAL; 9673 9674 if (settings->n_ciphers_pairwise > cipher_limit) 9675 return -EINVAL; 9676 9677 memcpy(settings->ciphers_pairwise, data, len); 9678 9679 for (i = 0; i < settings->n_ciphers_pairwise; i++) 9680 if (!cfg80211_supported_cipher_suite( 9681 &rdev->wiphy, 9682 settings->ciphers_pairwise[i])) 9683 return -EINVAL; 9684 } 9685 9686 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 9687 settings->cipher_group = 9688 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 9689 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 9690 settings->cipher_group)) 9691 return -EINVAL; 9692 } 9693 9694 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 9695 settings->wpa_versions = 9696 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 9697 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 9698 return -EINVAL; 9699 } 9700 9701 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 9702 void *data; 9703 int len; 9704 9705 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 9706 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 9707 settings->n_akm_suites = len / sizeof(u32); 9708 9709 if (len % sizeof(u32)) 9710 return -EINVAL; 9711 9712 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 9713 return -EINVAL; 9714 9715 memcpy(settings->akm_suites, data, len); 9716 } 9717 9718 if (info->attrs[NL80211_ATTR_PMK]) { 9719 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 9720 return -EINVAL; 9721 if (!wiphy_ext_feature_isset(&rdev->wiphy, 9722 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK) && 9723 !wiphy_ext_feature_isset(&rdev->wiphy, 9724 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_AP_PSK)) 9725 return -EINVAL; 9726 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 9727 } 9728 9729 if (info->attrs[NL80211_ATTR_SAE_PASSWORD]) { 9730 if (!wiphy_ext_feature_isset(&rdev->wiphy, 9731 NL80211_EXT_FEATURE_SAE_OFFLOAD) && 9732 !wiphy_ext_feature_isset(&rdev->wiphy, 9733 NL80211_EXT_FEATURE_SAE_OFFLOAD_AP)) 9734 return -EINVAL; 9735 settings->sae_pwd = 9736 nla_data(info->attrs[NL80211_ATTR_SAE_PASSWORD]); 9737 settings->sae_pwd_len = 9738 nla_len(info->attrs[NL80211_ATTR_SAE_PASSWORD]); 9739 } 9740 9741 if (info->attrs[NL80211_ATTR_SAE_PWE]) 9742 settings->sae_pwe = 9743 nla_get_u8(info->attrs[NL80211_ATTR_SAE_PWE]); 9744 else 9745 settings->sae_pwe = NL80211_SAE_PWE_UNSPECIFIED; 9746 9747 return 0; 9748 } 9749 9750 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 9751 { 9752 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9753 struct net_device *dev = info->user_ptr[1]; 9754 struct ieee80211_channel *chan; 9755 struct cfg80211_assoc_request req = {}; 9756 const u8 *bssid, *ssid; 9757 int err, ssid_len = 0; 9758 u32 freq; 9759 9760 if (dev->ieee80211_ptr->conn_owner_nlportid && 9761 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 9762 return -EPERM; 9763 9764 if (!info->attrs[NL80211_ATTR_MAC] || 9765 !info->attrs[NL80211_ATTR_SSID] || 9766 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9767 return -EINVAL; 9768 9769 if (!rdev->ops->assoc) 9770 return -EOPNOTSUPP; 9771 9772 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9773 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9774 return -EOPNOTSUPP; 9775 9776 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9777 9778 freq = MHZ_TO_KHZ(nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ])); 9779 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 9780 freq += 9781 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 9782 chan = nl80211_get_valid_chan(&rdev->wiphy, freq); 9783 if (!chan) 9784 return -EINVAL; 9785 9786 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9787 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9788 9789 if (info->attrs[NL80211_ATTR_IE]) { 9790 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9791 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9792 } 9793 9794 if (info->attrs[NL80211_ATTR_USE_MFP]) { 9795 enum nl80211_mfp mfp = 9796 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 9797 if (mfp == NL80211_MFP_REQUIRED) 9798 req.use_mfp = true; 9799 else if (mfp != NL80211_MFP_NO) 9800 return -EINVAL; 9801 } 9802 9803 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 9804 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 9805 9806 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 9807 req.flags |= ASSOC_REQ_DISABLE_HT; 9808 9809 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 9810 memcpy(&req.ht_capa_mask, 9811 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 9812 sizeof(req.ht_capa_mask)); 9813 9814 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 9815 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 9816 return -EINVAL; 9817 memcpy(&req.ht_capa, 9818 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 9819 sizeof(req.ht_capa)); 9820 } 9821 9822 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 9823 req.flags |= ASSOC_REQ_DISABLE_VHT; 9824 9825 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 9826 memcpy(&req.vht_capa_mask, 9827 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 9828 sizeof(req.vht_capa_mask)); 9829 9830 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 9831 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 9832 return -EINVAL; 9833 memcpy(&req.vht_capa, 9834 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 9835 sizeof(req.vht_capa)); 9836 } 9837 9838 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 9839 if (!((rdev->wiphy.features & 9840 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 9841 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 9842 !wiphy_ext_feature_isset(&rdev->wiphy, 9843 NL80211_EXT_FEATURE_RRM)) 9844 return -EINVAL; 9845 req.flags |= ASSOC_REQ_USE_RRM; 9846 } 9847 9848 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 9849 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 9850 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 9851 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 9852 return -EINVAL; 9853 req.fils_nonces = 9854 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 9855 } 9856 9857 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) { 9858 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY]) 9859 return -EINVAL; 9860 memcpy(&req.s1g_capa_mask, 9861 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]), 9862 sizeof(req.s1g_capa_mask)); 9863 } 9864 9865 if (info->attrs[NL80211_ATTR_S1G_CAPABILITY]) { 9866 if (!info->attrs[NL80211_ATTR_S1G_CAPABILITY_MASK]) 9867 return -EINVAL; 9868 memcpy(&req.s1g_capa, 9869 nla_data(info->attrs[NL80211_ATTR_S1G_CAPABILITY]), 9870 sizeof(req.s1g_capa)); 9871 } 9872 9873 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 9874 if (!err) { 9875 wdev_lock(dev->ieee80211_ptr); 9876 9877 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 9878 ssid, ssid_len, &req); 9879 9880 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9881 dev->ieee80211_ptr->conn_owner_nlportid = 9882 info->snd_portid; 9883 memcpy(dev->ieee80211_ptr->disconnect_bssid, 9884 bssid, ETH_ALEN); 9885 } 9886 9887 wdev_unlock(dev->ieee80211_ptr); 9888 } 9889 9890 return err; 9891 } 9892 9893 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 9894 { 9895 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9896 struct net_device *dev = info->user_ptr[1]; 9897 const u8 *ie = NULL, *bssid; 9898 int ie_len = 0, err; 9899 u16 reason_code; 9900 bool local_state_change; 9901 9902 if (dev->ieee80211_ptr->conn_owner_nlportid && 9903 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 9904 return -EPERM; 9905 9906 if (!info->attrs[NL80211_ATTR_MAC]) 9907 return -EINVAL; 9908 9909 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9910 return -EINVAL; 9911 9912 if (!rdev->ops->deauth) 9913 return -EOPNOTSUPP; 9914 9915 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9916 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9917 return -EOPNOTSUPP; 9918 9919 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9920 9921 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9922 if (reason_code == 0) { 9923 /* Reason Code 0 is reserved */ 9924 return -EINVAL; 9925 } 9926 9927 if (info->attrs[NL80211_ATTR_IE]) { 9928 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9929 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9930 } 9931 9932 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 9933 9934 wdev_lock(dev->ieee80211_ptr); 9935 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 9936 local_state_change); 9937 wdev_unlock(dev->ieee80211_ptr); 9938 return err; 9939 } 9940 9941 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 9942 { 9943 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9944 struct net_device *dev = info->user_ptr[1]; 9945 const u8 *ie = NULL, *bssid; 9946 int ie_len = 0, err; 9947 u16 reason_code; 9948 bool local_state_change; 9949 9950 if (dev->ieee80211_ptr->conn_owner_nlportid && 9951 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 9952 return -EPERM; 9953 9954 if (!info->attrs[NL80211_ATTR_MAC]) 9955 return -EINVAL; 9956 9957 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9958 return -EINVAL; 9959 9960 if (!rdev->ops->disassoc) 9961 return -EOPNOTSUPP; 9962 9963 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9964 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9965 return -EOPNOTSUPP; 9966 9967 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9968 9969 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9970 if (reason_code == 0) { 9971 /* Reason Code 0 is reserved */ 9972 return -EINVAL; 9973 } 9974 9975 if (info->attrs[NL80211_ATTR_IE]) { 9976 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9977 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9978 } 9979 9980 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 9981 9982 wdev_lock(dev->ieee80211_ptr); 9983 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 9984 local_state_change); 9985 wdev_unlock(dev->ieee80211_ptr); 9986 return err; 9987 } 9988 9989 static bool 9990 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 9991 int mcast_rate[NUM_NL80211_BANDS], 9992 int rateval) 9993 { 9994 struct wiphy *wiphy = &rdev->wiphy; 9995 bool found = false; 9996 int band, i; 9997 9998 for (band = 0; band < NUM_NL80211_BANDS; band++) { 9999 struct ieee80211_supported_band *sband; 10000 10001 sband = wiphy->bands[band]; 10002 if (!sband) 10003 continue; 10004 10005 for (i = 0; i < sband->n_bitrates; i++) { 10006 if (sband->bitrates[i].bitrate == rateval) { 10007 mcast_rate[band] = i + 1; 10008 found = true; 10009 break; 10010 } 10011 } 10012 } 10013 10014 return found; 10015 } 10016 10017 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 10018 { 10019 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10020 struct net_device *dev = info->user_ptr[1]; 10021 struct cfg80211_ibss_params ibss; 10022 struct wiphy *wiphy; 10023 struct cfg80211_cached_keys *connkeys = NULL; 10024 int err; 10025 10026 memset(&ibss, 0, sizeof(ibss)); 10027 10028 if (!info->attrs[NL80211_ATTR_SSID] || 10029 !nla_len(info->attrs[NL80211_ATTR_SSID])) 10030 return -EINVAL; 10031 10032 ibss.beacon_interval = 100; 10033 10034 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 10035 ibss.beacon_interval = 10036 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 10037 10038 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 10039 ibss.beacon_interval); 10040 if (err) 10041 return err; 10042 10043 if (!rdev->ops->join_ibss) 10044 return -EOPNOTSUPP; 10045 10046 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 10047 return -EOPNOTSUPP; 10048 10049 wiphy = &rdev->wiphy; 10050 10051 if (info->attrs[NL80211_ATTR_MAC]) { 10052 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 10053 10054 if (!is_valid_ether_addr(ibss.bssid)) 10055 return -EINVAL; 10056 } 10057 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 10058 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 10059 10060 if (info->attrs[NL80211_ATTR_IE]) { 10061 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10062 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10063 } 10064 10065 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 10066 if (err) 10067 return err; 10068 10069 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 10070 NL80211_IFTYPE_ADHOC)) 10071 return -EINVAL; 10072 10073 switch (ibss.chandef.width) { 10074 case NL80211_CHAN_WIDTH_5: 10075 case NL80211_CHAN_WIDTH_10: 10076 case NL80211_CHAN_WIDTH_20_NOHT: 10077 break; 10078 case NL80211_CHAN_WIDTH_20: 10079 case NL80211_CHAN_WIDTH_40: 10080 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 10081 return -EINVAL; 10082 break; 10083 case NL80211_CHAN_WIDTH_80: 10084 case NL80211_CHAN_WIDTH_80P80: 10085 case NL80211_CHAN_WIDTH_160: 10086 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 10087 return -EINVAL; 10088 if (!wiphy_ext_feature_isset(&rdev->wiphy, 10089 NL80211_EXT_FEATURE_VHT_IBSS)) 10090 return -EINVAL; 10091 break; 10092 default: 10093 return -EINVAL; 10094 } 10095 10096 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 10097 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 10098 10099 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 10100 u8 *rates = 10101 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10102 int n_rates = 10103 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10104 struct ieee80211_supported_band *sband = 10105 wiphy->bands[ibss.chandef.chan->band]; 10106 10107 err = ieee80211_get_ratemask(sband, rates, n_rates, 10108 &ibss.basic_rates); 10109 if (err) 10110 return err; 10111 } 10112 10113 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 10114 memcpy(&ibss.ht_capa_mask, 10115 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 10116 sizeof(ibss.ht_capa_mask)); 10117 10118 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 10119 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 10120 return -EINVAL; 10121 memcpy(&ibss.ht_capa, 10122 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 10123 sizeof(ibss.ht_capa)); 10124 } 10125 10126 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 10127 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 10128 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 10129 return -EINVAL; 10130 10131 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 10132 bool no_ht = false; 10133 10134 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht); 10135 if (IS_ERR(connkeys)) 10136 return PTR_ERR(connkeys); 10137 10138 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 10139 no_ht) { 10140 kfree_sensitive(connkeys); 10141 return -EINVAL; 10142 } 10143 } 10144 10145 ibss.control_port = 10146 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 10147 10148 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 10149 int r = validate_pae_over_nl80211(rdev, info); 10150 10151 if (r < 0) { 10152 kfree_sensitive(connkeys); 10153 return r; 10154 } 10155 10156 ibss.control_port_over_nl80211 = true; 10157 } 10158 10159 ibss.userspace_handles_dfs = 10160 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 10161 10162 wdev_lock(dev->ieee80211_ptr); 10163 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 10164 if (err) 10165 kfree_sensitive(connkeys); 10166 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 10167 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 10168 wdev_unlock(dev->ieee80211_ptr); 10169 10170 return err; 10171 } 10172 10173 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 10174 { 10175 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10176 struct net_device *dev = info->user_ptr[1]; 10177 10178 if (!rdev->ops->leave_ibss) 10179 return -EOPNOTSUPP; 10180 10181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 10182 return -EOPNOTSUPP; 10183 10184 return cfg80211_leave_ibss(rdev, dev, false); 10185 } 10186 10187 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 10188 { 10189 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10190 struct net_device *dev = info->user_ptr[1]; 10191 int mcast_rate[NUM_NL80211_BANDS]; 10192 u32 nla_rate; 10193 int err; 10194 10195 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 10196 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 10197 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 10198 return -EOPNOTSUPP; 10199 10200 if (!rdev->ops->set_mcast_rate) 10201 return -EOPNOTSUPP; 10202 10203 memset(mcast_rate, 0, sizeof(mcast_rate)); 10204 10205 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 10206 return -EINVAL; 10207 10208 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 10209 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 10210 return -EINVAL; 10211 10212 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 10213 10214 return err; 10215 } 10216 10217 static struct sk_buff * 10218 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 10219 struct wireless_dev *wdev, int approxlen, 10220 u32 portid, u32 seq, enum nl80211_commands cmd, 10221 enum nl80211_attrs attr, 10222 const struct nl80211_vendor_cmd_info *info, 10223 gfp_t gfp) 10224 { 10225 struct sk_buff *skb; 10226 void *hdr; 10227 struct nlattr *data; 10228 10229 skb = nlmsg_new(approxlen + 100, gfp); 10230 if (!skb) 10231 return NULL; 10232 10233 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 10234 if (!hdr) { 10235 kfree_skb(skb); 10236 return NULL; 10237 } 10238 10239 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 10240 goto nla_put_failure; 10241 10242 if (info) { 10243 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 10244 info->vendor_id)) 10245 goto nla_put_failure; 10246 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 10247 info->subcmd)) 10248 goto nla_put_failure; 10249 } 10250 10251 if (wdev) { 10252 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 10253 wdev_id(wdev), NL80211_ATTR_PAD)) 10254 goto nla_put_failure; 10255 if (wdev->netdev && 10256 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 10257 wdev->netdev->ifindex)) 10258 goto nla_put_failure; 10259 } 10260 10261 data = nla_nest_start_noflag(skb, attr); 10262 if (!data) 10263 goto nla_put_failure; 10264 10265 ((void **)skb->cb)[0] = rdev; 10266 ((void **)skb->cb)[1] = hdr; 10267 ((void **)skb->cb)[2] = data; 10268 10269 return skb; 10270 10271 nla_put_failure: 10272 kfree_skb(skb); 10273 return NULL; 10274 } 10275 10276 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 10277 struct wireless_dev *wdev, 10278 enum nl80211_commands cmd, 10279 enum nl80211_attrs attr, 10280 unsigned int portid, 10281 int vendor_event_idx, 10282 int approxlen, gfp_t gfp) 10283 { 10284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 10285 const struct nl80211_vendor_cmd_info *info; 10286 10287 switch (cmd) { 10288 case NL80211_CMD_TESTMODE: 10289 if (WARN_ON(vendor_event_idx != -1)) 10290 return NULL; 10291 info = NULL; 10292 break; 10293 case NL80211_CMD_VENDOR: 10294 if (WARN_ON(vendor_event_idx < 0 || 10295 vendor_event_idx >= wiphy->n_vendor_events)) 10296 return NULL; 10297 info = &wiphy->vendor_events[vendor_event_idx]; 10298 break; 10299 default: 10300 WARN_ON(1); 10301 return NULL; 10302 } 10303 10304 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, portid, 0, 10305 cmd, attr, info, gfp); 10306 } 10307 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 10308 10309 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 10310 { 10311 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 10312 void *hdr = ((void **)skb->cb)[1]; 10313 struct nlmsghdr *nlhdr = nlmsg_hdr(skb); 10314 struct nlattr *data = ((void **)skb->cb)[2]; 10315 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 10316 10317 /* clear CB data for netlink core to own from now on */ 10318 memset(skb->cb, 0, sizeof(skb->cb)); 10319 10320 nla_nest_end(skb, data); 10321 genlmsg_end(skb, hdr); 10322 10323 if (nlhdr->nlmsg_pid) { 10324 genlmsg_unicast(wiphy_net(&rdev->wiphy), skb, 10325 nlhdr->nlmsg_pid); 10326 } else { 10327 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 10328 mcgrp = NL80211_MCGRP_VENDOR; 10329 10330 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 10331 skb, 0, mcgrp, gfp); 10332 } 10333 } 10334 EXPORT_SYMBOL(__cfg80211_send_event_skb); 10335 10336 #ifdef CONFIG_NL80211_TESTMODE 10337 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 10338 { 10339 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10340 struct wireless_dev *wdev = 10341 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 10342 int err; 10343 10344 if (!rdev->ops->testmode_cmd) 10345 return -EOPNOTSUPP; 10346 10347 if (IS_ERR(wdev)) { 10348 err = PTR_ERR(wdev); 10349 if (err != -EINVAL) 10350 return err; 10351 wdev = NULL; 10352 } else if (wdev->wiphy != &rdev->wiphy) { 10353 return -EINVAL; 10354 } 10355 10356 if (!info->attrs[NL80211_ATTR_TESTDATA]) 10357 return -EINVAL; 10358 10359 rdev->cur_cmd_info = info; 10360 err = rdev_testmode_cmd(rdev, wdev, 10361 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 10362 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 10363 rdev->cur_cmd_info = NULL; 10364 10365 return err; 10366 } 10367 10368 static int nl80211_testmode_dump(struct sk_buff *skb, 10369 struct netlink_callback *cb) 10370 { 10371 struct cfg80211_registered_device *rdev; 10372 struct nlattr **attrbuf = NULL; 10373 int err; 10374 long phy_idx; 10375 void *data = NULL; 10376 int data_len = 0; 10377 10378 rtnl_lock(); 10379 10380 if (cb->args[0]) { 10381 /* 10382 * 0 is a valid index, but not valid for args[0], 10383 * so we need to offset by 1. 10384 */ 10385 phy_idx = cb->args[0] - 1; 10386 10387 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 10388 if (!rdev) { 10389 err = -ENOENT; 10390 goto out_err; 10391 } 10392 } else { 10393 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), 10394 GFP_KERNEL); 10395 if (!attrbuf) { 10396 err = -ENOMEM; 10397 goto out_err; 10398 } 10399 10400 err = nlmsg_parse_deprecated(cb->nlh, 10401 GENL_HDRLEN + nl80211_fam.hdrsize, 10402 attrbuf, nl80211_fam.maxattr, 10403 nl80211_policy, NULL); 10404 if (err) 10405 goto out_err; 10406 10407 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 10408 if (IS_ERR(rdev)) { 10409 err = PTR_ERR(rdev); 10410 goto out_err; 10411 } 10412 phy_idx = rdev->wiphy_idx; 10413 10414 if (attrbuf[NL80211_ATTR_TESTDATA]) 10415 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 10416 } 10417 10418 if (cb->args[1]) { 10419 data = nla_data((void *)cb->args[1]); 10420 data_len = nla_len((void *)cb->args[1]); 10421 } 10422 10423 if (!rdev->ops->testmode_dump) { 10424 err = -EOPNOTSUPP; 10425 goto out_err; 10426 } 10427 10428 while (1) { 10429 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 10430 cb->nlh->nlmsg_seq, NLM_F_MULTI, 10431 NL80211_CMD_TESTMODE); 10432 struct nlattr *tmdata; 10433 10434 if (!hdr) 10435 break; 10436 10437 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 10438 genlmsg_cancel(skb, hdr); 10439 break; 10440 } 10441 10442 tmdata = nla_nest_start_noflag(skb, NL80211_ATTR_TESTDATA); 10443 if (!tmdata) { 10444 genlmsg_cancel(skb, hdr); 10445 break; 10446 } 10447 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 10448 nla_nest_end(skb, tmdata); 10449 10450 if (err == -ENOBUFS || err == -ENOENT) { 10451 genlmsg_cancel(skb, hdr); 10452 break; 10453 } else if (err) { 10454 genlmsg_cancel(skb, hdr); 10455 goto out_err; 10456 } 10457 10458 genlmsg_end(skb, hdr); 10459 } 10460 10461 err = skb->len; 10462 /* see above */ 10463 cb->args[0] = phy_idx + 1; 10464 out_err: 10465 kfree(attrbuf); 10466 rtnl_unlock(); 10467 return err; 10468 } 10469 #endif 10470 10471 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 10472 { 10473 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10474 struct net_device *dev = info->user_ptr[1]; 10475 struct cfg80211_connect_params connect; 10476 struct wiphy *wiphy; 10477 struct cfg80211_cached_keys *connkeys = NULL; 10478 u32 freq = 0; 10479 int err; 10480 10481 memset(&connect, 0, sizeof(connect)); 10482 10483 if (!info->attrs[NL80211_ATTR_SSID] || 10484 !nla_len(info->attrs[NL80211_ATTR_SSID])) 10485 return -EINVAL; 10486 10487 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 10488 connect.auth_type = 10489 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 10490 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 10491 NL80211_CMD_CONNECT)) 10492 return -EINVAL; 10493 } else 10494 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 10495 10496 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 10497 10498 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 10499 !wiphy_ext_feature_isset(&rdev->wiphy, 10500 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 10501 return -EINVAL; 10502 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 10503 10504 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 10505 NL80211_MAX_NR_CIPHER_SUITES); 10506 if (err) 10507 return err; 10508 10509 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 10510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 10511 return -EOPNOTSUPP; 10512 10513 wiphy = &rdev->wiphy; 10514 10515 connect.bg_scan_period = -1; 10516 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 10517 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 10518 connect.bg_scan_period = 10519 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 10520 } 10521 10522 if (info->attrs[NL80211_ATTR_MAC]) 10523 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 10524 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 10525 connect.bssid_hint = 10526 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 10527 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 10528 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 10529 10530 if (info->attrs[NL80211_ATTR_IE]) { 10531 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10532 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10533 } 10534 10535 if (info->attrs[NL80211_ATTR_USE_MFP]) { 10536 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 10537 if (connect.mfp == NL80211_MFP_OPTIONAL && 10538 !wiphy_ext_feature_isset(&rdev->wiphy, 10539 NL80211_EXT_FEATURE_MFP_OPTIONAL)) 10540 return -EOPNOTSUPP; 10541 } else { 10542 connect.mfp = NL80211_MFP_NO; 10543 } 10544 10545 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 10546 connect.prev_bssid = 10547 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 10548 10549 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) 10550 freq = MHZ_TO_KHZ(nla_get_u32( 10551 info->attrs[NL80211_ATTR_WIPHY_FREQ])); 10552 if (info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]) 10553 freq += 10554 nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_OFFSET]); 10555 10556 if (freq) { 10557 connect.channel = nl80211_get_valid_chan(wiphy, freq); 10558 if (!connect.channel) 10559 return -EINVAL; 10560 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 10561 freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 10562 freq = MHZ_TO_KHZ(freq); 10563 connect.channel_hint = nl80211_get_valid_chan(wiphy, freq); 10564 if (!connect.channel_hint) 10565 return -EINVAL; 10566 } 10567 10568 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]) { 10569 connect.edmg.channels = 10570 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_CHANNELS]); 10571 10572 if (info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]) 10573 connect.edmg.bw_config = 10574 nla_get_u8(info->attrs[NL80211_ATTR_WIPHY_EDMG_BW_CONFIG]); 10575 } 10576 10577 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 10578 connkeys = nl80211_parse_connkeys(rdev, info, NULL); 10579 if (IS_ERR(connkeys)) 10580 return PTR_ERR(connkeys); 10581 } 10582 10583 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 10584 connect.flags |= ASSOC_REQ_DISABLE_HT; 10585 10586 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 10587 memcpy(&connect.ht_capa_mask, 10588 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 10589 sizeof(connect.ht_capa_mask)); 10590 10591 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 10592 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 10593 kfree_sensitive(connkeys); 10594 return -EINVAL; 10595 } 10596 memcpy(&connect.ht_capa, 10597 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 10598 sizeof(connect.ht_capa)); 10599 } 10600 10601 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 10602 connect.flags |= ASSOC_REQ_DISABLE_VHT; 10603 10604 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 10605 memcpy(&connect.vht_capa_mask, 10606 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 10607 sizeof(connect.vht_capa_mask)); 10608 10609 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 10610 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 10611 kfree_sensitive(connkeys); 10612 return -EINVAL; 10613 } 10614 memcpy(&connect.vht_capa, 10615 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 10616 sizeof(connect.vht_capa)); 10617 } 10618 10619 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 10620 if (!((rdev->wiphy.features & 10621 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 10622 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 10623 !wiphy_ext_feature_isset(&rdev->wiphy, 10624 NL80211_EXT_FEATURE_RRM)) { 10625 kfree_sensitive(connkeys); 10626 return -EINVAL; 10627 } 10628 connect.flags |= ASSOC_REQ_USE_RRM; 10629 } 10630 10631 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 10632 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 10633 kfree_sensitive(connkeys); 10634 return -EOPNOTSUPP; 10635 } 10636 10637 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 10638 /* bss selection makes no sense if bssid is set */ 10639 if (connect.bssid) { 10640 kfree_sensitive(connkeys); 10641 return -EINVAL; 10642 } 10643 10644 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 10645 wiphy, &connect.bss_select); 10646 if (err) { 10647 kfree_sensitive(connkeys); 10648 return err; 10649 } 10650 } 10651 10652 if (wiphy_ext_feature_isset(&rdev->wiphy, 10653 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 10654 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 10655 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 10656 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 10657 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 10658 connect.fils_erp_username = 10659 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 10660 connect.fils_erp_username_len = 10661 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 10662 connect.fils_erp_realm = 10663 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 10664 connect.fils_erp_realm_len = 10665 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 10666 connect.fils_erp_next_seq_num = 10667 nla_get_u16( 10668 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 10669 connect.fils_erp_rrk = 10670 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 10671 connect.fils_erp_rrk_len = 10672 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 10673 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 10674 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 10675 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 10676 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 10677 kfree_sensitive(connkeys); 10678 return -EINVAL; 10679 } 10680 10681 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) { 10682 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 10683 kfree_sensitive(connkeys); 10684 GENL_SET_ERR_MSG(info, 10685 "external auth requires connection ownership"); 10686 return -EINVAL; 10687 } 10688 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT; 10689 } 10690 10691 wdev_lock(dev->ieee80211_ptr); 10692 10693 err = cfg80211_connect(rdev, dev, &connect, connkeys, 10694 connect.prev_bssid); 10695 if (err) 10696 kfree_sensitive(connkeys); 10697 10698 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 10699 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 10700 if (connect.bssid) 10701 memcpy(dev->ieee80211_ptr->disconnect_bssid, 10702 connect.bssid, ETH_ALEN); 10703 else 10704 eth_zero_addr(dev->ieee80211_ptr->disconnect_bssid); 10705 } 10706 10707 wdev_unlock(dev->ieee80211_ptr); 10708 10709 return err; 10710 } 10711 10712 static int nl80211_update_connect_params(struct sk_buff *skb, 10713 struct genl_info *info) 10714 { 10715 struct cfg80211_connect_params connect = {}; 10716 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10717 struct net_device *dev = info->user_ptr[1]; 10718 struct wireless_dev *wdev = dev->ieee80211_ptr; 10719 bool fils_sk_offload; 10720 u32 auth_type; 10721 u32 changed = 0; 10722 int ret; 10723 10724 if (!rdev->ops->update_connect_params) 10725 return -EOPNOTSUPP; 10726 10727 if (info->attrs[NL80211_ATTR_IE]) { 10728 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10729 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10730 changed |= UPDATE_ASSOC_IES; 10731 } 10732 10733 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy, 10734 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD); 10735 10736 /* 10737 * when driver supports fils-sk offload all attributes must be 10738 * provided. So the else covers "fils-sk-not-all" and 10739 * "no-fils-sk-any". 10740 */ 10741 if (fils_sk_offload && 10742 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 10743 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 10744 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 10745 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 10746 connect.fils_erp_username = 10747 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 10748 connect.fils_erp_username_len = 10749 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 10750 connect.fils_erp_realm = 10751 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 10752 connect.fils_erp_realm_len = 10753 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 10754 connect.fils_erp_next_seq_num = 10755 nla_get_u16( 10756 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 10757 connect.fils_erp_rrk = 10758 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 10759 connect.fils_erp_rrk_len = 10760 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 10761 changed |= UPDATE_FILS_ERP_INFO; 10762 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 10763 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 10764 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 10765 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 10766 return -EINVAL; 10767 } 10768 10769 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 10770 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 10771 if (!nl80211_valid_auth_type(rdev, auth_type, 10772 NL80211_CMD_CONNECT)) 10773 return -EINVAL; 10774 10775 if (auth_type == NL80211_AUTHTYPE_FILS_SK && 10776 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO)) 10777 return -EINVAL; 10778 10779 connect.auth_type = auth_type; 10780 changed |= UPDATE_AUTH_TYPE; 10781 } 10782 10783 wdev_lock(dev->ieee80211_ptr); 10784 if (!wdev->current_bss) 10785 ret = -ENOLINK; 10786 else 10787 ret = rdev_update_connect_params(rdev, dev, &connect, changed); 10788 wdev_unlock(dev->ieee80211_ptr); 10789 10790 return ret; 10791 } 10792 10793 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 10794 { 10795 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10796 struct net_device *dev = info->user_ptr[1]; 10797 u16 reason; 10798 int ret; 10799 10800 if (dev->ieee80211_ptr->conn_owner_nlportid && 10801 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 10802 return -EPERM; 10803 10804 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 10805 reason = WLAN_REASON_DEAUTH_LEAVING; 10806 else 10807 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 10808 10809 if (reason == 0) 10810 return -EINVAL; 10811 10812 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 10813 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 10814 return -EOPNOTSUPP; 10815 10816 wdev_lock(dev->ieee80211_ptr); 10817 ret = cfg80211_disconnect(rdev, dev, reason, true); 10818 wdev_unlock(dev->ieee80211_ptr); 10819 return ret; 10820 } 10821 10822 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 10823 { 10824 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10825 struct net *net; 10826 int err; 10827 10828 if (info->attrs[NL80211_ATTR_PID]) { 10829 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 10830 10831 net = get_net_ns_by_pid(pid); 10832 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 10833 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 10834 10835 net = get_net_ns_by_fd(fd); 10836 } else { 10837 return -EINVAL; 10838 } 10839 10840 if (IS_ERR(net)) 10841 return PTR_ERR(net); 10842 10843 err = 0; 10844 10845 /* check if anything to do */ 10846 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 10847 err = cfg80211_switch_netns(rdev, net); 10848 10849 put_net(net); 10850 return err; 10851 } 10852 10853 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 10854 { 10855 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10856 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 10857 struct cfg80211_pmksa *pmksa) = NULL; 10858 struct net_device *dev = info->user_ptr[1]; 10859 struct cfg80211_pmksa pmksa; 10860 10861 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 10862 10863 if (!info->attrs[NL80211_ATTR_PMKID]) 10864 return -EINVAL; 10865 10866 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 10867 10868 if (info->attrs[NL80211_ATTR_MAC]) { 10869 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 10870 } else if (info->attrs[NL80211_ATTR_SSID] && 10871 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 10872 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA || 10873 info->attrs[NL80211_ATTR_PMK])) { 10874 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 10875 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 10876 pmksa.cache_id = 10877 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 10878 } else { 10879 return -EINVAL; 10880 } 10881 if (info->attrs[NL80211_ATTR_PMK]) { 10882 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 10883 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 10884 } 10885 10886 if (info->attrs[NL80211_ATTR_PMK_LIFETIME]) 10887 pmksa.pmk_lifetime = 10888 nla_get_u32(info->attrs[NL80211_ATTR_PMK_LIFETIME]); 10889 10890 if (info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]) 10891 pmksa.pmk_reauth_threshold = 10892 nla_get_u8( 10893 info->attrs[NL80211_ATTR_PMK_REAUTH_THRESHOLD]); 10894 10895 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 10896 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT && 10897 !(dev->ieee80211_ptr->iftype == NL80211_IFTYPE_AP && 10898 wiphy_ext_feature_isset(&rdev->wiphy, 10899 NL80211_EXT_FEATURE_AP_PMKSA_CACHING))) 10900 return -EOPNOTSUPP; 10901 10902 switch (info->genlhdr->cmd) { 10903 case NL80211_CMD_SET_PMKSA: 10904 rdev_ops = rdev->ops->set_pmksa; 10905 break; 10906 case NL80211_CMD_DEL_PMKSA: 10907 rdev_ops = rdev->ops->del_pmksa; 10908 break; 10909 default: 10910 WARN_ON(1); 10911 break; 10912 } 10913 10914 if (!rdev_ops) 10915 return -EOPNOTSUPP; 10916 10917 return rdev_ops(&rdev->wiphy, dev, &pmksa); 10918 } 10919 10920 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 10921 { 10922 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10923 struct net_device *dev = info->user_ptr[1]; 10924 10925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 10926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 10927 return -EOPNOTSUPP; 10928 10929 if (!rdev->ops->flush_pmksa) 10930 return -EOPNOTSUPP; 10931 10932 return rdev_flush_pmksa(rdev, dev); 10933 } 10934 10935 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 10936 { 10937 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10938 struct net_device *dev = info->user_ptr[1]; 10939 u8 action_code, dialog_token; 10940 u32 peer_capability = 0; 10941 u16 status_code; 10942 u8 *peer; 10943 bool initiator; 10944 10945 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 10946 !rdev->ops->tdls_mgmt) 10947 return -EOPNOTSUPP; 10948 10949 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 10950 !info->attrs[NL80211_ATTR_STATUS_CODE] || 10951 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 10952 !info->attrs[NL80211_ATTR_IE] || 10953 !info->attrs[NL80211_ATTR_MAC]) 10954 return -EINVAL; 10955 10956 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10957 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 10958 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 10959 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 10960 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 10961 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 10962 peer_capability = 10963 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 10964 10965 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 10966 dialog_token, status_code, peer_capability, 10967 initiator, 10968 nla_data(info->attrs[NL80211_ATTR_IE]), 10969 nla_len(info->attrs[NL80211_ATTR_IE])); 10970 } 10971 10972 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 10973 { 10974 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10975 struct net_device *dev = info->user_ptr[1]; 10976 enum nl80211_tdls_operation operation; 10977 u8 *peer; 10978 10979 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 10980 !rdev->ops->tdls_oper) 10981 return -EOPNOTSUPP; 10982 10983 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 10984 !info->attrs[NL80211_ATTR_MAC]) 10985 return -EINVAL; 10986 10987 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 10988 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10989 10990 return rdev_tdls_oper(rdev, dev, peer, operation); 10991 } 10992 10993 static int nl80211_remain_on_channel(struct sk_buff *skb, 10994 struct genl_info *info) 10995 { 10996 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10997 struct wireless_dev *wdev = info->user_ptr[1]; 10998 struct cfg80211_chan_def chandef; 10999 const struct cfg80211_chan_def *compat_chandef; 11000 struct sk_buff *msg; 11001 void *hdr; 11002 u64 cookie; 11003 u32 duration; 11004 int err; 11005 11006 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 11007 !info->attrs[NL80211_ATTR_DURATION]) 11008 return -EINVAL; 11009 11010 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 11011 11012 if (!rdev->ops->remain_on_channel || 11013 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 11014 return -EOPNOTSUPP; 11015 11016 /* 11017 * We should be on that channel for at least a minimum amount of 11018 * time (10ms) but no longer than the driver supports. 11019 */ 11020 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 11021 duration > rdev->wiphy.max_remain_on_channel_duration) 11022 return -EINVAL; 11023 11024 err = nl80211_parse_chandef(rdev, info, &chandef); 11025 if (err) 11026 return err; 11027 11028 wdev_lock(wdev); 11029 if (!cfg80211_off_channel_oper_allowed(wdev) && 11030 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) { 11031 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef, 11032 &chandef); 11033 if (compat_chandef != &chandef) { 11034 wdev_unlock(wdev); 11035 return -EBUSY; 11036 } 11037 } 11038 wdev_unlock(wdev); 11039 11040 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11041 if (!msg) 11042 return -ENOMEM; 11043 11044 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11045 NL80211_CMD_REMAIN_ON_CHANNEL); 11046 if (!hdr) { 11047 err = -ENOBUFS; 11048 goto free_msg; 11049 } 11050 11051 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 11052 duration, &cookie); 11053 11054 if (err) 11055 goto free_msg; 11056 11057 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11058 NL80211_ATTR_PAD)) 11059 goto nla_put_failure; 11060 11061 genlmsg_end(msg, hdr); 11062 11063 return genlmsg_reply(msg, info); 11064 11065 nla_put_failure: 11066 err = -ENOBUFS; 11067 free_msg: 11068 nlmsg_free(msg); 11069 return err; 11070 } 11071 11072 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 11073 struct genl_info *info) 11074 { 11075 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11076 struct wireless_dev *wdev = info->user_ptr[1]; 11077 u64 cookie; 11078 11079 if (!info->attrs[NL80211_ATTR_COOKIE]) 11080 return -EINVAL; 11081 11082 if (!rdev->ops->cancel_remain_on_channel) 11083 return -EOPNOTSUPP; 11084 11085 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11086 11087 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 11088 } 11089 11090 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 11091 struct genl_info *info) 11092 { 11093 struct cfg80211_bitrate_mask mask; 11094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11095 struct net_device *dev = info->user_ptr[1]; 11096 int err; 11097 11098 if (!rdev->ops->set_bitrate_mask) 11099 return -EOPNOTSUPP; 11100 11101 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 11102 NL80211_ATTR_TX_RATES, &mask, 11103 dev, true); 11104 if (err) 11105 return err; 11106 11107 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 11108 } 11109 11110 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 11111 { 11112 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11113 struct wireless_dev *wdev = info->user_ptr[1]; 11114 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 11115 11116 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 11117 return -EINVAL; 11118 11119 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 11120 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 11121 11122 switch (wdev->iftype) { 11123 case NL80211_IFTYPE_STATION: 11124 case NL80211_IFTYPE_ADHOC: 11125 case NL80211_IFTYPE_P2P_CLIENT: 11126 case NL80211_IFTYPE_AP: 11127 case NL80211_IFTYPE_AP_VLAN: 11128 case NL80211_IFTYPE_MESH_POINT: 11129 case NL80211_IFTYPE_P2P_GO: 11130 case NL80211_IFTYPE_P2P_DEVICE: 11131 break; 11132 case NL80211_IFTYPE_NAN: 11133 default: 11134 return -EOPNOTSUPP; 11135 } 11136 11137 /* not much point in registering if we can't reply */ 11138 if (!rdev->ops->mgmt_tx) 11139 return -EOPNOTSUPP; 11140 11141 if (info->attrs[NL80211_ATTR_RECEIVE_MULTICAST] && 11142 !wiphy_ext_feature_isset(&rdev->wiphy, 11143 NL80211_EXT_FEATURE_MULTICAST_REGISTRATIONS)) { 11144 GENL_SET_ERR_MSG(info, 11145 "multicast RX registrations are not supported"); 11146 return -EOPNOTSUPP; 11147 } 11148 11149 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 11150 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 11151 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH]), 11152 info->attrs[NL80211_ATTR_RECEIVE_MULTICAST], 11153 info->extack); 11154 } 11155 11156 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 11157 { 11158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11159 struct wireless_dev *wdev = info->user_ptr[1]; 11160 struct cfg80211_chan_def chandef; 11161 int err; 11162 void *hdr = NULL; 11163 u64 cookie; 11164 struct sk_buff *msg = NULL; 11165 struct cfg80211_mgmt_tx_params params = { 11166 .dont_wait_for_ack = 11167 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 11168 }; 11169 11170 if (!info->attrs[NL80211_ATTR_FRAME]) 11171 return -EINVAL; 11172 11173 if (!rdev->ops->mgmt_tx) 11174 return -EOPNOTSUPP; 11175 11176 switch (wdev->iftype) { 11177 case NL80211_IFTYPE_P2P_DEVICE: 11178 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 11179 return -EINVAL; 11180 break; 11181 case NL80211_IFTYPE_STATION: 11182 case NL80211_IFTYPE_ADHOC: 11183 case NL80211_IFTYPE_P2P_CLIENT: 11184 case NL80211_IFTYPE_AP: 11185 case NL80211_IFTYPE_AP_VLAN: 11186 case NL80211_IFTYPE_MESH_POINT: 11187 case NL80211_IFTYPE_P2P_GO: 11188 break; 11189 case NL80211_IFTYPE_NAN: 11190 default: 11191 return -EOPNOTSUPP; 11192 } 11193 11194 if (info->attrs[NL80211_ATTR_DURATION]) { 11195 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 11196 return -EINVAL; 11197 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 11198 11199 /* 11200 * We should wait on the channel for at least a minimum amount 11201 * of time (10ms) but no longer than the driver supports. 11202 */ 11203 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 11204 params.wait > rdev->wiphy.max_remain_on_channel_duration) 11205 return -EINVAL; 11206 } 11207 11208 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 11209 11210 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 11211 return -EINVAL; 11212 11213 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 11214 11215 /* get the channel if any has been specified, otherwise pass NULL to 11216 * the driver. The latter will use the current one 11217 */ 11218 chandef.chan = NULL; 11219 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 11220 err = nl80211_parse_chandef(rdev, info, &chandef); 11221 if (err) 11222 return err; 11223 } 11224 11225 if (!chandef.chan && params.offchan) 11226 return -EINVAL; 11227 11228 wdev_lock(wdev); 11229 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) { 11230 wdev_unlock(wdev); 11231 return -EBUSY; 11232 } 11233 wdev_unlock(wdev); 11234 11235 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 11236 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 11237 11238 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 11239 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 11240 int i; 11241 11242 if (len % sizeof(u16)) 11243 return -EINVAL; 11244 11245 params.n_csa_offsets = len / sizeof(u16); 11246 params.csa_offsets = 11247 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 11248 11249 /* check that all the offsets fit the frame */ 11250 for (i = 0; i < params.n_csa_offsets; i++) { 11251 if (params.csa_offsets[i] >= params.len) 11252 return -EINVAL; 11253 } 11254 } 11255 11256 if (!params.dont_wait_for_ack) { 11257 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11258 if (!msg) 11259 return -ENOMEM; 11260 11261 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11262 NL80211_CMD_FRAME); 11263 if (!hdr) { 11264 err = -ENOBUFS; 11265 goto free_msg; 11266 } 11267 } 11268 11269 params.chan = chandef.chan; 11270 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 11271 if (err) 11272 goto free_msg; 11273 11274 if (msg) { 11275 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11276 NL80211_ATTR_PAD)) 11277 goto nla_put_failure; 11278 11279 genlmsg_end(msg, hdr); 11280 return genlmsg_reply(msg, info); 11281 } 11282 11283 return 0; 11284 11285 nla_put_failure: 11286 err = -ENOBUFS; 11287 free_msg: 11288 nlmsg_free(msg); 11289 return err; 11290 } 11291 11292 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 11293 { 11294 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11295 struct wireless_dev *wdev = info->user_ptr[1]; 11296 u64 cookie; 11297 11298 if (!info->attrs[NL80211_ATTR_COOKIE]) 11299 return -EINVAL; 11300 11301 if (!rdev->ops->mgmt_tx_cancel_wait) 11302 return -EOPNOTSUPP; 11303 11304 switch (wdev->iftype) { 11305 case NL80211_IFTYPE_STATION: 11306 case NL80211_IFTYPE_ADHOC: 11307 case NL80211_IFTYPE_P2P_CLIENT: 11308 case NL80211_IFTYPE_AP: 11309 case NL80211_IFTYPE_AP_VLAN: 11310 case NL80211_IFTYPE_P2P_GO: 11311 case NL80211_IFTYPE_P2P_DEVICE: 11312 break; 11313 case NL80211_IFTYPE_NAN: 11314 default: 11315 return -EOPNOTSUPP; 11316 } 11317 11318 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11319 11320 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 11321 } 11322 11323 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 11324 { 11325 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11326 struct wireless_dev *wdev; 11327 struct net_device *dev = info->user_ptr[1]; 11328 u8 ps_state; 11329 bool state; 11330 int err; 11331 11332 if (!info->attrs[NL80211_ATTR_PS_STATE]) 11333 return -EINVAL; 11334 11335 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 11336 11337 wdev = dev->ieee80211_ptr; 11338 11339 if (!rdev->ops->set_power_mgmt) 11340 return -EOPNOTSUPP; 11341 11342 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 11343 11344 if (state == wdev->ps) 11345 return 0; 11346 11347 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 11348 if (!err) 11349 wdev->ps = state; 11350 return err; 11351 } 11352 11353 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 11354 { 11355 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11356 enum nl80211_ps_state ps_state; 11357 struct wireless_dev *wdev; 11358 struct net_device *dev = info->user_ptr[1]; 11359 struct sk_buff *msg; 11360 void *hdr; 11361 int err; 11362 11363 wdev = dev->ieee80211_ptr; 11364 11365 if (!rdev->ops->set_power_mgmt) 11366 return -EOPNOTSUPP; 11367 11368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11369 if (!msg) 11370 return -ENOMEM; 11371 11372 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11373 NL80211_CMD_GET_POWER_SAVE); 11374 if (!hdr) { 11375 err = -ENOBUFS; 11376 goto free_msg; 11377 } 11378 11379 if (wdev->ps) 11380 ps_state = NL80211_PS_ENABLED; 11381 else 11382 ps_state = NL80211_PS_DISABLED; 11383 11384 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 11385 goto nla_put_failure; 11386 11387 genlmsg_end(msg, hdr); 11388 return genlmsg_reply(msg, info); 11389 11390 nla_put_failure: 11391 err = -ENOBUFS; 11392 free_msg: 11393 nlmsg_free(msg); 11394 return err; 11395 } 11396 11397 static const struct nla_policy 11398 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 11399 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 11400 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 11401 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 11402 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 11403 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 11404 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 11405 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 11406 }; 11407 11408 static int nl80211_set_cqm_txe(struct genl_info *info, 11409 u32 rate, u32 pkts, u32 intvl) 11410 { 11411 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11412 struct net_device *dev = info->user_ptr[1]; 11413 struct wireless_dev *wdev = dev->ieee80211_ptr; 11414 11415 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 11416 return -EINVAL; 11417 11418 if (!rdev->ops->set_cqm_txe_config) 11419 return -EOPNOTSUPP; 11420 11421 if (wdev->iftype != NL80211_IFTYPE_STATION && 11422 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 11423 return -EOPNOTSUPP; 11424 11425 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 11426 } 11427 11428 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 11429 struct net_device *dev) 11430 { 11431 struct wireless_dev *wdev = dev->ieee80211_ptr; 11432 s32 last, low, high; 11433 u32 hyst; 11434 int i, n, low_index; 11435 int err; 11436 11437 /* RSSI reporting disabled? */ 11438 if (!wdev->cqm_config) 11439 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 11440 11441 /* 11442 * Obtain current RSSI value if possible, if not and no RSSI threshold 11443 * event has been received yet, we should receive an event after a 11444 * connection is established and enough beacons received to calculate 11445 * the average. 11446 */ 11447 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss && 11448 rdev->ops->get_station) { 11449 struct station_info sinfo = {}; 11450 u8 *mac_addr; 11451 11452 mac_addr = wdev->current_bss->pub.bssid; 11453 11454 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 11455 if (err) 11456 return err; 11457 11458 cfg80211_sinfo_release_content(&sinfo); 11459 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 11460 wdev->cqm_config->last_rssi_event_value = 11461 (s8) sinfo.rx_beacon_signal_avg; 11462 } 11463 11464 last = wdev->cqm_config->last_rssi_event_value; 11465 hyst = wdev->cqm_config->rssi_hyst; 11466 n = wdev->cqm_config->n_rssi_thresholds; 11467 11468 for (i = 0; i < n; i++) { 11469 i = array_index_nospec(i, n); 11470 if (last < wdev->cqm_config->rssi_thresholds[i]) 11471 break; 11472 } 11473 11474 low_index = i - 1; 11475 if (low_index >= 0) { 11476 low_index = array_index_nospec(low_index, n); 11477 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst; 11478 } else { 11479 low = S32_MIN; 11480 } 11481 if (i < n) { 11482 i = array_index_nospec(i, n); 11483 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1; 11484 } else { 11485 high = S32_MAX; 11486 } 11487 11488 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 11489 } 11490 11491 static int nl80211_set_cqm_rssi(struct genl_info *info, 11492 const s32 *thresholds, int n_thresholds, 11493 u32 hysteresis) 11494 { 11495 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11496 struct net_device *dev = info->user_ptr[1]; 11497 struct wireless_dev *wdev = dev->ieee80211_ptr; 11498 int i, err; 11499 s32 prev = S32_MIN; 11500 11501 /* Check all values negative and sorted */ 11502 for (i = 0; i < n_thresholds; i++) { 11503 if (thresholds[i] > 0 || thresholds[i] <= prev) 11504 return -EINVAL; 11505 11506 prev = thresholds[i]; 11507 } 11508 11509 if (wdev->iftype != NL80211_IFTYPE_STATION && 11510 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 11511 return -EOPNOTSUPP; 11512 11513 wdev_lock(wdev); 11514 cfg80211_cqm_config_free(wdev); 11515 wdev_unlock(wdev); 11516 11517 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { 11518 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ 11519 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 11520 11521 return rdev_set_cqm_rssi_config(rdev, dev, 11522 thresholds[0], hysteresis); 11523 } 11524 11525 if (!wiphy_ext_feature_isset(&rdev->wiphy, 11526 NL80211_EXT_FEATURE_CQM_RSSI_LIST)) 11527 return -EOPNOTSUPP; 11528 11529 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 11530 n_thresholds = 0; 11531 11532 wdev_lock(wdev); 11533 if (n_thresholds) { 11534 struct cfg80211_cqm_config *cqm_config; 11535 11536 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) + 11537 n_thresholds * sizeof(s32), GFP_KERNEL); 11538 if (!cqm_config) { 11539 err = -ENOMEM; 11540 goto unlock; 11541 } 11542 11543 cqm_config->rssi_hyst = hysteresis; 11544 cqm_config->n_rssi_thresholds = n_thresholds; 11545 memcpy(cqm_config->rssi_thresholds, thresholds, 11546 n_thresholds * sizeof(s32)); 11547 11548 wdev->cqm_config = cqm_config; 11549 } 11550 11551 err = cfg80211_cqm_rssi_update(rdev, dev); 11552 11553 unlock: 11554 wdev_unlock(wdev); 11555 11556 return err; 11557 } 11558 11559 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 11560 { 11561 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 11562 struct nlattr *cqm; 11563 int err; 11564 11565 cqm = info->attrs[NL80211_ATTR_CQM]; 11566 if (!cqm) 11567 return -EINVAL; 11568 11569 err = nla_parse_nested_deprecated(attrs, NL80211_ATTR_CQM_MAX, cqm, 11570 nl80211_attr_cqm_policy, 11571 info->extack); 11572 if (err) 11573 return err; 11574 11575 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 11576 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 11577 const s32 *thresholds = 11578 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 11579 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 11580 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 11581 11582 if (len % 4) 11583 return -EINVAL; 11584 11585 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 11586 hysteresis); 11587 } 11588 11589 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 11590 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 11591 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 11592 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 11593 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 11594 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 11595 11596 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 11597 } 11598 11599 return -EINVAL; 11600 } 11601 11602 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 11603 { 11604 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11605 struct net_device *dev = info->user_ptr[1]; 11606 struct ocb_setup setup = {}; 11607 int err; 11608 11609 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 11610 if (err) 11611 return err; 11612 11613 return cfg80211_join_ocb(rdev, dev, &setup); 11614 } 11615 11616 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 11617 { 11618 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11619 struct net_device *dev = info->user_ptr[1]; 11620 11621 return cfg80211_leave_ocb(rdev, dev); 11622 } 11623 11624 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 11625 { 11626 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11627 struct net_device *dev = info->user_ptr[1]; 11628 struct mesh_config cfg; 11629 struct mesh_setup setup; 11630 int err; 11631 11632 /* start with default */ 11633 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 11634 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 11635 11636 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 11637 /* and parse parameters if given */ 11638 err = nl80211_parse_mesh_config(info, &cfg, NULL); 11639 if (err) 11640 return err; 11641 } 11642 11643 if (!info->attrs[NL80211_ATTR_MESH_ID] || 11644 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 11645 return -EINVAL; 11646 11647 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 11648 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 11649 11650 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 11651 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 11652 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 11653 return -EINVAL; 11654 11655 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 11656 setup.beacon_interval = 11657 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 11658 11659 err = cfg80211_validate_beacon_int(rdev, 11660 NL80211_IFTYPE_MESH_POINT, 11661 setup.beacon_interval); 11662 if (err) 11663 return err; 11664 } 11665 11666 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 11667 setup.dtim_period = 11668 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 11669 if (setup.dtim_period < 1 || setup.dtim_period > 100) 11670 return -EINVAL; 11671 } 11672 11673 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 11674 /* parse additional setup parameters if given */ 11675 err = nl80211_parse_mesh_setup(info, &setup); 11676 if (err) 11677 return err; 11678 } 11679 11680 if (setup.user_mpm) 11681 cfg.auto_open_plinks = false; 11682 11683 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 11684 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 11685 if (err) 11686 return err; 11687 } else { 11688 /* __cfg80211_join_mesh() will sort it out */ 11689 setup.chandef.chan = NULL; 11690 } 11691 11692 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 11693 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 11694 int n_rates = 11695 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 11696 struct ieee80211_supported_band *sband; 11697 11698 if (!setup.chandef.chan) 11699 return -EINVAL; 11700 11701 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 11702 11703 err = ieee80211_get_ratemask(sband, rates, n_rates, 11704 &setup.basic_rates); 11705 if (err) 11706 return err; 11707 } 11708 11709 if (info->attrs[NL80211_ATTR_TX_RATES]) { 11710 err = nl80211_parse_tx_bitrate_mask(info, info->attrs, 11711 NL80211_ATTR_TX_RATES, 11712 &setup.beacon_rate, 11713 dev, false); 11714 if (err) 11715 return err; 11716 11717 if (!setup.chandef.chan) 11718 return -EINVAL; 11719 11720 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 11721 &setup.beacon_rate); 11722 if (err) 11723 return err; 11724 } 11725 11726 setup.userspace_handles_dfs = 11727 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 11728 11729 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 11730 int r = validate_pae_over_nl80211(rdev, info); 11731 11732 if (r < 0) 11733 return r; 11734 11735 setup.control_port_over_nl80211 = true; 11736 } 11737 11738 wdev_lock(dev->ieee80211_ptr); 11739 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg); 11740 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) 11741 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 11742 wdev_unlock(dev->ieee80211_ptr); 11743 11744 return err; 11745 } 11746 11747 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 11748 { 11749 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11750 struct net_device *dev = info->user_ptr[1]; 11751 11752 return cfg80211_leave_mesh(rdev, dev); 11753 } 11754 11755 #ifdef CONFIG_PM 11756 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 11757 struct cfg80211_registered_device *rdev) 11758 { 11759 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 11760 struct nlattr *nl_pats, *nl_pat; 11761 int i, pat_len; 11762 11763 if (!wowlan->n_patterns) 11764 return 0; 11765 11766 nl_pats = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 11767 if (!nl_pats) 11768 return -ENOBUFS; 11769 11770 for (i = 0; i < wowlan->n_patterns; i++) { 11771 nl_pat = nla_nest_start_noflag(msg, i + 1); 11772 if (!nl_pat) 11773 return -ENOBUFS; 11774 pat_len = wowlan->patterns[i].pattern_len; 11775 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 11776 wowlan->patterns[i].mask) || 11777 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 11778 wowlan->patterns[i].pattern) || 11779 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 11780 wowlan->patterns[i].pkt_offset)) 11781 return -ENOBUFS; 11782 nla_nest_end(msg, nl_pat); 11783 } 11784 nla_nest_end(msg, nl_pats); 11785 11786 return 0; 11787 } 11788 11789 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 11790 struct cfg80211_wowlan_tcp *tcp) 11791 { 11792 struct nlattr *nl_tcp; 11793 11794 if (!tcp) 11795 return 0; 11796 11797 nl_tcp = nla_nest_start_noflag(msg, 11798 NL80211_WOWLAN_TRIG_TCP_CONNECTION); 11799 if (!nl_tcp) 11800 return -ENOBUFS; 11801 11802 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 11803 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 11804 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 11805 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 11806 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 11807 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 11808 tcp->payload_len, tcp->payload) || 11809 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 11810 tcp->data_interval) || 11811 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 11812 tcp->wake_len, tcp->wake_data) || 11813 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 11814 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 11815 return -ENOBUFS; 11816 11817 if (tcp->payload_seq.len && 11818 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 11819 sizeof(tcp->payload_seq), &tcp->payload_seq)) 11820 return -ENOBUFS; 11821 11822 if (tcp->payload_tok.len && 11823 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 11824 sizeof(tcp->payload_tok) + tcp->tokens_size, 11825 &tcp->payload_tok)) 11826 return -ENOBUFS; 11827 11828 nla_nest_end(msg, nl_tcp); 11829 11830 return 0; 11831 } 11832 11833 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 11834 struct cfg80211_sched_scan_request *req) 11835 { 11836 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 11837 int i; 11838 11839 if (!req) 11840 return 0; 11841 11842 nd = nla_nest_start_noflag(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 11843 if (!nd) 11844 return -ENOBUFS; 11845 11846 if (req->n_scan_plans == 1 && 11847 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 11848 req->scan_plans[0].interval * 1000)) 11849 return -ENOBUFS; 11850 11851 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 11852 return -ENOBUFS; 11853 11854 if (req->relative_rssi_set) { 11855 struct nl80211_bss_select_rssi_adjust rssi_adjust; 11856 11857 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 11858 req->relative_rssi)) 11859 return -ENOBUFS; 11860 11861 rssi_adjust.band = req->rssi_adjust.band; 11862 rssi_adjust.delta = req->rssi_adjust.delta; 11863 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 11864 sizeof(rssi_adjust), &rssi_adjust)) 11865 return -ENOBUFS; 11866 } 11867 11868 freqs = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11869 if (!freqs) 11870 return -ENOBUFS; 11871 11872 for (i = 0; i < req->n_channels; i++) { 11873 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11874 return -ENOBUFS; 11875 } 11876 11877 nla_nest_end(msg, freqs); 11878 11879 if (req->n_match_sets) { 11880 matches = nla_nest_start_noflag(msg, 11881 NL80211_ATTR_SCHED_SCAN_MATCH); 11882 if (!matches) 11883 return -ENOBUFS; 11884 11885 for (i = 0; i < req->n_match_sets; i++) { 11886 match = nla_nest_start_noflag(msg, i); 11887 if (!match) 11888 return -ENOBUFS; 11889 11890 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 11891 req->match_sets[i].ssid.ssid_len, 11892 req->match_sets[i].ssid.ssid)) 11893 return -ENOBUFS; 11894 nla_nest_end(msg, match); 11895 } 11896 nla_nest_end(msg, matches); 11897 } 11898 11899 scan_plans = nla_nest_start_noflag(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 11900 if (!scan_plans) 11901 return -ENOBUFS; 11902 11903 for (i = 0; i < req->n_scan_plans; i++) { 11904 scan_plan = nla_nest_start_noflag(msg, i + 1); 11905 if (!scan_plan) 11906 return -ENOBUFS; 11907 11908 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 11909 req->scan_plans[i].interval) || 11910 (req->scan_plans[i].iterations && 11911 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 11912 req->scan_plans[i].iterations))) 11913 return -ENOBUFS; 11914 nla_nest_end(msg, scan_plan); 11915 } 11916 nla_nest_end(msg, scan_plans); 11917 11918 nla_nest_end(msg, nd); 11919 11920 return 0; 11921 } 11922 11923 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 11924 { 11925 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11926 struct sk_buff *msg; 11927 void *hdr; 11928 u32 size = NLMSG_DEFAULT_SIZE; 11929 11930 if (!rdev->wiphy.wowlan) 11931 return -EOPNOTSUPP; 11932 11933 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 11934 /* adjust size to have room for all the data */ 11935 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 11936 rdev->wiphy.wowlan_config->tcp->payload_len + 11937 rdev->wiphy.wowlan_config->tcp->wake_len + 11938 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 11939 } 11940 11941 msg = nlmsg_new(size, GFP_KERNEL); 11942 if (!msg) 11943 return -ENOMEM; 11944 11945 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11946 NL80211_CMD_GET_WOWLAN); 11947 if (!hdr) 11948 goto nla_put_failure; 11949 11950 if (rdev->wiphy.wowlan_config) { 11951 struct nlattr *nl_wowlan; 11952 11953 nl_wowlan = nla_nest_start_noflag(msg, 11954 NL80211_ATTR_WOWLAN_TRIGGERS); 11955 if (!nl_wowlan) 11956 goto nla_put_failure; 11957 11958 if ((rdev->wiphy.wowlan_config->any && 11959 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 11960 (rdev->wiphy.wowlan_config->disconnect && 11961 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 11962 (rdev->wiphy.wowlan_config->magic_pkt && 11963 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 11964 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 11965 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 11966 (rdev->wiphy.wowlan_config->eap_identity_req && 11967 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 11968 (rdev->wiphy.wowlan_config->four_way_handshake && 11969 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 11970 (rdev->wiphy.wowlan_config->rfkill_release && 11971 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 11972 goto nla_put_failure; 11973 11974 if (nl80211_send_wowlan_patterns(msg, rdev)) 11975 goto nla_put_failure; 11976 11977 if (nl80211_send_wowlan_tcp(msg, 11978 rdev->wiphy.wowlan_config->tcp)) 11979 goto nla_put_failure; 11980 11981 if (nl80211_send_wowlan_nd( 11982 msg, 11983 rdev->wiphy.wowlan_config->nd_config)) 11984 goto nla_put_failure; 11985 11986 nla_nest_end(msg, nl_wowlan); 11987 } 11988 11989 genlmsg_end(msg, hdr); 11990 return genlmsg_reply(msg, info); 11991 11992 nla_put_failure: 11993 nlmsg_free(msg); 11994 return -ENOBUFS; 11995 } 11996 11997 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 11998 struct nlattr *attr, 11999 struct cfg80211_wowlan *trig) 12000 { 12001 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 12002 struct cfg80211_wowlan_tcp *cfg; 12003 struct nl80211_wowlan_tcp_data_token *tok = NULL; 12004 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 12005 u32 size; 12006 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 12007 int err, port; 12008 12009 if (!rdev->wiphy.wowlan->tcp) 12010 return -EINVAL; 12011 12012 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TCP, attr, 12013 nl80211_wowlan_tcp_policy, NULL); 12014 if (err) 12015 return err; 12016 12017 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 12018 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 12019 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 12020 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 12021 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 12022 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 12023 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 12024 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 12025 return -EINVAL; 12026 12027 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 12028 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 12029 return -EINVAL; 12030 12031 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 12032 rdev->wiphy.wowlan->tcp->data_interval_max || 12033 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 12034 return -EINVAL; 12035 12036 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 12037 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 12038 return -EINVAL; 12039 12040 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 12041 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 12042 return -EINVAL; 12043 12044 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 12045 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 12046 12047 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 12048 tokens_size = tokln - sizeof(*tok); 12049 12050 if (!tok->len || tokens_size % tok->len) 12051 return -EINVAL; 12052 if (!rdev->wiphy.wowlan->tcp->tok) 12053 return -EINVAL; 12054 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 12055 return -EINVAL; 12056 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 12057 return -EINVAL; 12058 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 12059 return -EINVAL; 12060 if (tok->offset + tok->len > data_size) 12061 return -EINVAL; 12062 } 12063 12064 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 12065 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 12066 if (!rdev->wiphy.wowlan->tcp->seq) 12067 return -EINVAL; 12068 if (seq->len == 0 || seq->len > 4) 12069 return -EINVAL; 12070 if (seq->len + seq->offset > data_size) 12071 return -EINVAL; 12072 } 12073 12074 size = sizeof(*cfg); 12075 size += data_size; 12076 size += wake_size + wake_mask_size; 12077 size += tokens_size; 12078 12079 cfg = kzalloc(size, GFP_KERNEL); 12080 if (!cfg) 12081 return -ENOMEM; 12082 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 12083 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 12084 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 12085 ETH_ALEN); 12086 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 12087 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 12088 else 12089 port = 0; 12090 #ifdef CONFIG_INET 12091 /* allocate a socket and port for it and use it */ 12092 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 12093 IPPROTO_TCP, &cfg->sock, 1); 12094 if (err) { 12095 kfree(cfg); 12096 return err; 12097 } 12098 if (inet_csk_get_port(cfg->sock->sk, port)) { 12099 sock_release(cfg->sock); 12100 kfree(cfg); 12101 return -EADDRINUSE; 12102 } 12103 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 12104 #else 12105 if (!port) { 12106 kfree(cfg); 12107 return -EINVAL; 12108 } 12109 cfg->src_port = port; 12110 #endif 12111 12112 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 12113 cfg->payload_len = data_size; 12114 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 12115 memcpy((void *)cfg->payload, 12116 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 12117 data_size); 12118 if (seq) 12119 cfg->payload_seq = *seq; 12120 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 12121 cfg->wake_len = wake_size; 12122 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 12123 memcpy((void *)cfg->wake_data, 12124 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 12125 wake_size); 12126 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 12127 data_size + wake_size; 12128 memcpy((void *)cfg->wake_mask, 12129 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 12130 wake_mask_size); 12131 if (tok) { 12132 cfg->tokens_size = tokens_size; 12133 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 12134 } 12135 12136 trig->tcp = cfg; 12137 12138 return 0; 12139 } 12140 12141 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 12142 const struct wiphy_wowlan_support *wowlan, 12143 struct nlattr *attr, 12144 struct cfg80211_wowlan *trig) 12145 { 12146 struct nlattr **tb; 12147 int err; 12148 12149 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 12150 if (!tb) 12151 return -ENOMEM; 12152 12153 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 12154 err = -EOPNOTSUPP; 12155 goto out; 12156 } 12157 12158 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_MAX, attr, 12159 nl80211_policy, NULL); 12160 if (err) 12161 goto out; 12162 12163 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 12164 wowlan->max_nd_match_sets); 12165 err = PTR_ERR_OR_ZERO(trig->nd_config); 12166 if (err) 12167 trig->nd_config = NULL; 12168 12169 out: 12170 kfree(tb); 12171 return err; 12172 } 12173 12174 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 12175 { 12176 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12177 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 12178 struct cfg80211_wowlan new_triggers = {}; 12179 struct cfg80211_wowlan *ntrig; 12180 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 12181 int err, i; 12182 bool prev_enabled = rdev->wiphy.wowlan_config; 12183 bool regular = false; 12184 12185 if (!wowlan) 12186 return -EOPNOTSUPP; 12187 12188 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 12189 cfg80211_rdev_free_wowlan(rdev); 12190 rdev->wiphy.wowlan_config = NULL; 12191 goto set_wakeup; 12192 } 12193 12194 err = nla_parse_nested_deprecated(tb, MAX_NL80211_WOWLAN_TRIG, 12195 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 12196 nl80211_wowlan_policy, info->extack); 12197 if (err) 12198 return err; 12199 12200 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 12201 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 12202 return -EINVAL; 12203 new_triggers.any = true; 12204 } 12205 12206 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 12207 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 12208 return -EINVAL; 12209 new_triggers.disconnect = true; 12210 regular = true; 12211 } 12212 12213 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 12214 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 12215 return -EINVAL; 12216 new_triggers.magic_pkt = true; 12217 regular = true; 12218 } 12219 12220 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 12221 return -EINVAL; 12222 12223 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 12224 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 12225 return -EINVAL; 12226 new_triggers.gtk_rekey_failure = true; 12227 regular = true; 12228 } 12229 12230 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 12231 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 12232 return -EINVAL; 12233 new_triggers.eap_identity_req = true; 12234 regular = true; 12235 } 12236 12237 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 12238 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 12239 return -EINVAL; 12240 new_triggers.four_way_handshake = true; 12241 regular = true; 12242 } 12243 12244 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 12245 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 12246 return -EINVAL; 12247 new_triggers.rfkill_release = true; 12248 regular = true; 12249 } 12250 12251 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 12252 struct nlattr *pat; 12253 int n_patterns = 0; 12254 int rem, pat_len, mask_len, pkt_offset; 12255 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 12256 12257 regular = true; 12258 12259 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 12260 rem) 12261 n_patterns++; 12262 if (n_patterns > wowlan->n_patterns) 12263 return -EINVAL; 12264 12265 new_triggers.patterns = kcalloc(n_patterns, 12266 sizeof(new_triggers.patterns[0]), 12267 GFP_KERNEL); 12268 if (!new_triggers.patterns) 12269 return -ENOMEM; 12270 12271 new_triggers.n_patterns = n_patterns; 12272 i = 0; 12273 12274 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 12275 rem) { 12276 u8 *mask_pat; 12277 12278 err = nla_parse_nested_deprecated(pat_tb, 12279 MAX_NL80211_PKTPAT, 12280 pat, 12281 nl80211_packet_pattern_policy, 12282 info->extack); 12283 if (err) 12284 goto error; 12285 12286 err = -EINVAL; 12287 if (!pat_tb[NL80211_PKTPAT_MASK] || 12288 !pat_tb[NL80211_PKTPAT_PATTERN]) 12289 goto error; 12290 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 12291 mask_len = DIV_ROUND_UP(pat_len, 8); 12292 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 12293 goto error; 12294 if (pat_len > wowlan->pattern_max_len || 12295 pat_len < wowlan->pattern_min_len) 12296 goto error; 12297 12298 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 12299 pkt_offset = 0; 12300 else 12301 pkt_offset = nla_get_u32( 12302 pat_tb[NL80211_PKTPAT_OFFSET]); 12303 if (pkt_offset > wowlan->max_pkt_offset) 12304 goto error; 12305 new_triggers.patterns[i].pkt_offset = pkt_offset; 12306 12307 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 12308 if (!mask_pat) { 12309 err = -ENOMEM; 12310 goto error; 12311 } 12312 new_triggers.patterns[i].mask = mask_pat; 12313 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 12314 mask_len); 12315 mask_pat += mask_len; 12316 new_triggers.patterns[i].pattern = mask_pat; 12317 new_triggers.patterns[i].pattern_len = pat_len; 12318 memcpy(mask_pat, 12319 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 12320 pat_len); 12321 i++; 12322 } 12323 } 12324 12325 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 12326 regular = true; 12327 err = nl80211_parse_wowlan_tcp( 12328 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 12329 &new_triggers); 12330 if (err) 12331 goto error; 12332 } 12333 12334 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 12335 regular = true; 12336 err = nl80211_parse_wowlan_nd( 12337 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 12338 &new_triggers); 12339 if (err) 12340 goto error; 12341 } 12342 12343 /* The 'any' trigger means the device continues operating more or less 12344 * as in its normal operation mode and wakes up the host on most of the 12345 * normal interrupts (like packet RX, ...) 12346 * It therefore makes little sense to combine with the more constrained 12347 * wakeup trigger modes. 12348 */ 12349 if (new_triggers.any && regular) { 12350 err = -EINVAL; 12351 goto error; 12352 } 12353 12354 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 12355 if (!ntrig) { 12356 err = -ENOMEM; 12357 goto error; 12358 } 12359 cfg80211_rdev_free_wowlan(rdev); 12360 rdev->wiphy.wowlan_config = ntrig; 12361 12362 set_wakeup: 12363 if (rdev->ops->set_wakeup && 12364 prev_enabled != !!rdev->wiphy.wowlan_config) 12365 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 12366 12367 return 0; 12368 error: 12369 for (i = 0; i < new_triggers.n_patterns; i++) 12370 kfree(new_triggers.patterns[i].mask); 12371 kfree(new_triggers.patterns); 12372 if (new_triggers.tcp && new_triggers.tcp->sock) 12373 sock_release(new_triggers.tcp->sock); 12374 kfree(new_triggers.tcp); 12375 kfree(new_triggers.nd_config); 12376 return err; 12377 } 12378 #endif 12379 12380 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 12381 struct cfg80211_registered_device *rdev) 12382 { 12383 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 12384 int i, j, pat_len; 12385 struct cfg80211_coalesce_rules *rule; 12386 12387 if (!rdev->coalesce->n_rules) 12388 return 0; 12389 12390 nl_rules = nla_nest_start_noflag(msg, NL80211_ATTR_COALESCE_RULE); 12391 if (!nl_rules) 12392 return -ENOBUFS; 12393 12394 for (i = 0; i < rdev->coalesce->n_rules; i++) { 12395 nl_rule = nla_nest_start_noflag(msg, i + 1); 12396 if (!nl_rule) 12397 return -ENOBUFS; 12398 12399 rule = &rdev->coalesce->rules[i]; 12400 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 12401 rule->delay)) 12402 return -ENOBUFS; 12403 12404 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 12405 rule->condition)) 12406 return -ENOBUFS; 12407 12408 nl_pats = nla_nest_start_noflag(msg, 12409 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 12410 if (!nl_pats) 12411 return -ENOBUFS; 12412 12413 for (j = 0; j < rule->n_patterns; j++) { 12414 nl_pat = nla_nest_start_noflag(msg, j + 1); 12415 if (!nl_pat) 12416 return -ENOBUFS; 12417 pat_len = rule->patterns[j].pattern_len; 12418 if (nla_put(msg, NL80211_PKTPAT_MASK, 12419 DIV_ROUND_UP(pat_len, 8), 12420 rule->patterns[j].mask) || 12421 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 12422 rule->patterns[j].pattern) || 12423 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 12424 rule->patterns[j].pkt_offset)) 12425 return -ENOBUFS; 12426 nla_nest_end(msg, nl_pat); 12427 } 12428 nla_nest_end(msg, nl_pats); 12429 nla_nest_end(msg, nl_rule); 12430 } 12431 nla_nest_end(msg, nl_rules); 12432 12433 return 0; 12434 } 12435 12436 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 12437 { 12438 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12439 struct sk_buff *msg; 12440 void *hdr; 12441 12442 if (!rdev->wiphy.coalesce) 12443 return -EOPNOTSUPP; 12444 12445 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12446 if (!msg) 12447 return -ENOMEM; 12448 12449 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 12450 NL80211_CMD_GET_COALESCE); 12451 if (!hdr) 12452 goto nla_put_failure; 12453 12454 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 12455 goto nla_put_failure; 12456 12457 genlmsg_end(msg, hdr); 12458 return genlmsg_reply(msg, info); 12459 12460 nla_put_failure: 12461 nlmsg_free(msg); 12462 return -ENOBUFS; 12463 } 12464 12465 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 12466 { 12467 struct cfg80211_coalesce *coalesce = rdev->coalesce; 12468 int i, j; 12469 struct cfg80211_coalesce_rules *rule; 12470 12471 if (!coalesce) 12472 return; 12473 12474 for (i = 0; i < coalesce->n_rules; i++) { 12475 rule = &coalesce->rules[i]; 12476 for (j = 0; j < rule->n_patterns; j++) 12477 kfree(rule->patterns[j].mask); 12478 kfree(rule->patterns); 12479 } 12480 kfree(coalesce->rules); 12481 kfree(coalesce); 12482 rdev->coalesce = NULL; 12483 } 12484 12485 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 12486 struct nlattr *rule, 12487 struct cfg80211_coalesce_rules *new_rule) 12488 { 12489 int err, i; 12490 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 12491 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 12492 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 12493 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 12494 12495 err = nla_parse_nested_deprecated(tb, NL80211_ATTR_COALESCE_RULE_MAX, 12496 rule, nl80211_coalesce_policy, NULL); 12497 if (err) 12498 return err; 12499 12500 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 12501 new_rule->delay = 12502 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 12503 if (new_rule->delay > coalesce->max_delay) 12504 return -EINVAL; 12505 12506 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 12507 new_rule->condition = 12508 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 12509 12510 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 12511 return -EINVAL; 12512 12513 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 12514 rem) 12515 n_patterns++; 12516 if (n_patterns > coalesce->n_patterns) 12517 return -EINVAL; 12518 12519 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 12520 GFP_KERNEL); 12521 if (!new_rule->patterns) 12522 return -ENOMEM; 12523 12524 new_rule->n_patterns = n_patterns; 12525 i = 0; 12526 12527 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 12528 rem) { 12529 u8 *mask_pat; 12530 12531 err = nla_parse_nested_deprecated(pat_tb, MAX_NL80211_PKTPAT, 12532 pat, 12533 nl80211_packet_pattern_policy, 12534 NULL); 12535 if (err) 12536 return err; 12537 12538 if (!pat_tb[NL80211_PKTPAT_MASK] || 12539 !pat_tb[NL80211_PKTPAT_PATTERN]) 12540 return -EINVAL; 12541 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 12542 mask_len = DIV_ROUND_UP(pat_len, 8); 12543 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 12544 return -EINVAL; 12545 if (pat_len > coalesce->pattern_max_len || 12546 pat_len < coalesce->pattern_min_len) 12547 return -EINVAL; 12548 12549 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 12550 pkt_offset = 0; 12551 else 12552 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 12553 if (pkt_offset > coalesce->max_pkt_offset) 12554 return -EINVAL; 12555 new_rule->patterns[i].pkt_offset = pkt_offset; 12556 12557 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 12558 if (!mask_pat) 12559 return -ENOMEM; 12560 12561 new_rule->patterns[i].mask = mask_pat; 12562 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 12563 mask_len); 12564 12565 mask_pat += mask_len; 12566 new_rule->patterns[i].pattern = mask_pat; 12567 new_rule->patterns[i].pattern_len = pat_len; 12568 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 12569 pat_len); 12570 i++; 12571 } 12572 12573 return 0; 12574 } 12575 12576 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 12577 { 12578 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12579 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 12580 struct cfg80211_coalesce new_coalesce = {}; 12581 struct cfg80211_coalesce *n_coalesce; 12582 int err, rem_rule, n_rules = 0, i, j; 12583 struct nlattr *rule; 12584 struct cfg80211_coalesce_rules *tmp_rule; 12585 12586 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 12587 return -EOPNOTSUPP; 12588 12589 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 12590 cfg80211_rdev_free_coalesce(rdev); 12591 rdev_set_coalesce(rdev, NULL); 12592 return 0; 12593 } 12594 12595 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 12596 rem_rule) 12597 n_rules++; 12598 if (n_rules > coalesce->n_rules) 12599 return -EINVAL; 12600 12601 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 12602 GFP_KERNEL); 12603 if (!new_coalesce.rules) 12604 return -ENOMEM; 12605 12606 new_coalesce.n_rules = n_rules; 12607 i = 0; 12608 12609 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 12610 rem_rule) { 12611 err = nl80211_parse_coalesce_rule(rdev, rule, 12612 &new_coalesce.rules[i]); 12613 if (err) 12614 goto error; 12615 12616 i++; 12617 } 12618 12619 err = rdev_set_coalesce(rdev, &new_coalesce); 12620 if (err) 12621 goto error; 12622 12623 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 12624 if (!n_coalesce) { 12625 err = -ENOMEM; 12626 goto error; 12627 } 12628 cfg80211_rdev_free_coalesce(rdev); 12629 rdev->coalesce = n_coalesce; 12630 12631 return 0; 12632 error: 12633 for (i = 0; i < new_coalesce.n_rules; i++) { 12634 tmp_rule = &new_coalesce.rules[i]; 12635 for (j = 0; j < tmp_rule->n_patterns; j++) 12636 kfree(tmp_rule->patterns[j].mask); 12637 kfree(tmp_rule->patterns); 12638 } 12639 kfree(new_coalesce.rules); 12640 12641 return err; 12642 } 12643 12644 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 12645 { 12646 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12647 struct net_device *dev = info->user_ptr[1]; 12648 struct wireless_dev *wdev = dev->ieee80211_ptr; 12649 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 12650 struct cfg80211_gtk_rekey_data rekey_data; 12651 int err; 12652 12653 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 12654 return -EINVAL; 12655 12656 err = nla_parse_nested_deprecated(tb, MAX_NL80211_REKEY_DATA, 12657 info->attrs[NL80211_ATTR_REKEY_DATA], 12658 nl80211_rekey_policy, info->extack); 12659 if (err) 12660 return err; 12661 12662 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 12663 !tb[NL80211_REKEY_DATA_KCK]) 12664 return -EINVAL; 12665 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN && 12666 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && 12667 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KEK_EXT_LEN)) 12668 return -ERANGE; 12669 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN && 12670 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_EXT_KEK_KCK && 12671 nla_len(tb[NL80211_REKEY_DATA_KEK]) == NL80211_KCK_EXT_LEN)) 12672 return -ERANGE; 12673 12674 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 12675 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 12676 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 12677 rekey_data.kek_len = nla_len(tb[NL80211_REKEY_DATA_KEK]); 12678 rekey_data.kck_len = nla_len(tb[NL80211_REKEY_DATA_KCK]); 12679 if (tb[NL80211_REKEY_DATA_AKM]) 12680 rekey_data.akm = nla_get_u32(tb[NL80211_REKEY_DATA_AKM]); 12681 12682 wdev_lock(wdev); 12683 if (!wdev->current_bss) { 12684 err = -ENOTCONN; 12685 goto out; 12686 } 12687 12688 if (!rdev->ops->set_rekey_data) { 12689 err = -EOPNOTSUPP; 12690 goto out; 12691 } 12692 12693 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 12694 out: 12695 wdev_unlock(wdev); 12696 return err; 12697 } 12698 12699 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 12700 struct genl_info *info) 12701 { 12702 struct net_device *dev = info->user_ptr[1]; 12703 struct wireless_dev *wdev = dev->ieee80211_ptr; 12704 12705 if (wdev->iftype != NL80211_IFTYPE_AP && 12706 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12707 return -EINVAL; 12708 12709 if (wdev->ap_unexpected_nlportid) 12710 return -EBUSY; 12711 12712 wdev->ap_unexpected_nlportid = info->snd_portid; 12713 return 0; 12714 } 12715 12716 static int nl80211_probe_client(struct sk_buff *skb, 12717 struct genl_info *info) 12718 { 12719 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12720 struct net_device *dev = info->user_ptr[1]; 12721 struct wireless_dev *wdev = dev->ieee80211_ptr; 12722 struct sk_buff *msg; 12723 void *hdr; 12724 const u8 *addr; 12725 u64 cookie; 12726 int err; 12727 12728 if (wdev->iftype != NL80211_IFTYPE_AP && 12729 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12730 return -EOPNOTSUPP; 12731 12732 if (!info->attrs[NL80211_ATTR_MAC]) 12733 return -EINVAL; 12734 12735 if (!rdev->ops->probe_client) 12736 return -EOPNOTSUPP; 12737 12738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12739 if (!msg) 12740 return -ENOMEM; 12741 12742 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 12743 NL80211_CMD_PROBE_CLIENT); 12744 if (!hdr) { 12745 err = -ENOBUFS; 12746 goto free_msg; 12747 } 12748 12749 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12750 12751 err = rdev_probe_client(rdev, dev, addr, &cookie); 12752 if (err) 12753 goto free_msg; 12754 12755 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12756 NL80211_ATTR_PAD)) 12757 goto nla_put_failure; 12758 12759 genlmsg_end(msg, hdr); 12760 12761 return genlmsg_reply(msg, info); 12762 12763 nla_put_failure: 12764 err = -ENOBUFS; 12765 free_msg: 12766 nlmsg_free(msg); 12767 return err; 12768 } 12769 12770 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 12771 { 12772 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12773 struct cfg80211_beacon_registration *reg, *nreg; 12774 int rv; 12775 12776 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 12777 return -EOPNOTSUPP; 12778 12779 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 12780 if (!nreg) 12781 return -ENOMEM; 12782 12783 /* First, check if already registered. */ 12784 spin_lock_bh(&rdev->beacon_registrations_lock); 12785 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12786 if (reg->nlportid == info->snd_portid) { 12787 rv = -EALREADY; 12788 goto out_err; 12789 } 12790 } 12791 /* Add it to the list */ 12792 nreg->nlportid = info->snd_portid; 12793 list_add(&nreg->list, &rdev->beacon_registrations); 12794 12795 spin_unlock_bh(&rdev->beacon_registrations_lock); 12796 12797 return 0; 12798 out_err: 12799 spin_unlock_bh(&rdev->beacon_registrations_lock); 12800 kfree(nreg); 12801 return rv; 12802 } 12803 12804 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 12805 { 12806 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12807 struct wireless_dev *wdev = info->user_ptr[1]; 12808 int err; 12809 12810 if (!rdev->ops->start_p2p_device) 12811 return -EOPNOTSUPP; 12812 12813 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 12814 return -EOPNOTSUPP; 12815 12816 if (wdev_running(wdev)) 12817 return 0; 12818 12819 if (rfkill_blocked(rdev->rfkill)) 12820 return -ERFKILL; 12821 12822 err = rdev_start_p2p_device(rdev, wdev); 12823 if (err) 12824 return err; 12825 12826 wdev->is_running = true; 12827 rdev->opencount++; 12828 12829 return 0; 12830 } 12831 12832 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 12833 { 12834 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12835 struct wireless_dev *wdev = info->user_ptr[1]; 12836 12837 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 12838 return -EOPNOTSUPP; 12839 12840 if (!rdev->ops->stop_p2p_device) 12841 return -EOPNOTSUPP; 12842 12843 cfg80211_stop_p2p_device(rdev, wdev); 12844 12845 return 0; 12846 } 12847 12848 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 12849 { 12850 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12851 struct wireless_dev *wdev = info->user_ptr[1]; 12852 struct cfg80211_nan_conf conf = {}; 12853 int err; 12854 12855 if (wdev->iftype != NL80211_IFTYPE_NAN) 12856 return -EOPNOTSUPP; 12857 12858 if (wdev_running(wdev)) 12859 return -EEXIST; 12860 12861 if (rfkill_blocked(rdev->rfkill)) 12862 return -ERFKILL; 12863 12864 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 12865 return -EINVAL; 12866 12867 conf.master_pref = 12868 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 12869 12870 if (info->attrs[NL80211_ATTR_BANDS]) { 12871 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 12872 12873 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 12874 return -EOPNOTSUPP; 12875 12876 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 12877 return -EINVAL; 12878 12879 conf.bands = bands; 12880 } 12881 12882 err = rdev_start_nan(rdev, wdev, &conf); 12883 if (err) 12884 return err; 12885 12886 wdev->is_running = true; 12887 rdev->opencount++; 12888 12889 return 0; 12890 } 12891 12892 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 12893 { 12894 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12895 struct wireless_dev *wdev = info->user_ptr[1]; 12896 12897 if (wdev->iftype != NL80211_IFTYPE_NAN) 12898 return -EOPNOTSUPP; 12899 12900 cfg80211_stop_nan(rdev, wdev); 12901 12902 return 0; 12903 } 12904 12905 static int validate_nan_filter(struct nlattr *filter_attr) 12906 { 12907 struct nlattr *attr; 12908 int len = 0, n_entries = 0, rem; 12909 12910 nla_for_each_nested(attr, filter_attr, rem) { 12911 len += nla_len(attr); 12912 n_entries++; 12913 } 12914 12915 if (len >= U8_MAX) 12916 return -EINVAL; 12917 12918 return n_entries; 12919 } 12920 12921 static int handle_nan_filter(struct nlattr *attr_filter, 12922 struct cfg80211_nan_func *func, 12923 bool tx) 12924 { 12925 struct nlattr *attr; 12926 int n_entries, rem, i; 12927 struct cfg80211_nan_func_filter *filter; 12928 12929 n_entries = validate_nan_filter(attr_filter); 12930 if (n_entries < 0) 12931 return n_entries; 12932 12933 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 12934 12935 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 12936 if (!filter) 12937 return -ENOMEM; 12938 12939 i = 0; 12940 nla_for_each_nested(attr, attr_filter, rem) { 12941 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 12942 filter[i].len = nla_len(attr); 12943 i++; 12944 } 12945 if (tx) { 12946 func->num_tx_filters = n_entries; 12947 func->tx_filters = filter; 12948 } else { 12949 func->num_rx_filters = n_entries; 12950 func->rx_filters = filter; 12951 } 12952 12953 return 0; 12954 } 12955 12956 static int nl80211_nan_add_func(struct sk_buff *skb, 12957 struct genl_info *info) 12958 { 12959 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12960 struct wireless_dev *wdev = info->user_ptr[1]; 12961 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 12962 struct cfg80211_nan_func *func; 12963 struct sk_buff *msg = NULL; 12964 void *hdr = NULL; 12965 int err = 0; 12966 12967 if (wdev->iftype != NL80211_IFTYPE_NAN) 12968 return -EOPNOTSUPP; 12969 12970 if (!wdev_running(wdev)) 12971 return -ENOTCONN; 12972 12973 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 12974 return -EINVAL; 12975 12976 err = nla_parse_nested_deprecated(tb, NL80211_NAN_FUNC_ATTR_MAX, 12977 info->attrs[NL80211_ATTR_NAN_FUNC], 12978 nl80211_nan_func_policy, 12979 info->extack); 12980 if (err) 12981 return err; 12982 12983 func = kzalloc(sizeof(*func), GFP_KERNEL); 12984 if (!func) 12985 return -ENOMEM; 12986 12987 func->cookie = cfg80211_assign_cookie(rdev); 12988 12989 if (!tb[NL80211_NAN_FUNC_TYPE]) { 12990 err = -EINVAL; 12991 goto out; 12992 } 12993 12994 12995 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 12996 12997 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 12998 err = -EINVAL; 12999 goto out; 13000 } 13001 13002 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 13003 sizeof(func->service_id)); 13004 13005 func->close_range = 13006 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 13007 13008 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 13009 func->serv_spec_info_len = 13010 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 13011 func->serv_spec_info = 13012 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 13013 func->serv_spec_info_len, 13014 GFP_KERNEL); 13015 if (!func->serv_spec_info) { 13016 err = -ENOMEM; 13017 goto out; 13018 } 13019 } 13020 13021 if (tb[NL80211_NAN_FUNC_TTL]) 13022 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 13023 13024 switch (func->type) { 13025 case NL80211_NAN_FUNC_PUBLISH: 13026 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 13027 err = -EINVAL; 13028 goto out; 13029 } 13030 13031 func->publish_type = 13032 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 13033 func->publish_bcast = 13034 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 13035 13036 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 13037 func->publish_bcast) { 13038 err = -EINVAL; 13039 goto out; 13040 } 13041 break; 13042 case NL80211_NAN_FUNC_SUBSCRIBE: 13043 func->subscribe_active = 13044 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 13045 break; 13046 case NL80211_NAN_FUNC_FOLLOW_UP: 13047 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 13048 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] || 13049 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) { 13050 err = -EINVAL; 13051 goto out; 13052 } 13053 13054 func->followup_id = 13055 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 13056 func->followup_reqid = 13057 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 13058 memcpy(func->followup_dest.addr, 13059 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 13060 sizeof(func->followup_dest.addr)); 13061 if (func->ttl) { 13062 err = -EINVAL; 13063 goto out; 13064 } 13065 break; 13066 default: 13067 err = -EINVAL; 13068 goto out; 13069 } 13070 13071 if (tb[NL80211_NAN_FUNC_SRF]) { 13072 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 13073 13074 err = nla_parse_nested_deprecated(srf_tb, 13075 NL80211_NAN_SRF_ATTR_MAX, 13076 tb[NL80211_NAN_FUNC_SRF], 13077 nl80211_nan_srf_policy, 13078 info->extack); 13079 if (err) 13080 goto out; 13081 13082 func->srf_include = 13083 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 13084 13085 if (srf_tb[NL80211_NAN_SRF_BF]) { 13086 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 13087 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 13088 err = -EINVAL; 13089 goto out; 13090 } 13091 13092 func->srf_bf_len = 13093 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 13094 func->srf_bf = 13095 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 13096 func->srf_bf_len, GFP_KERNEL); 13097 if (!func->srf_bf) { 13098 err = -ENOMEM; 13099 goto out; 13100 } 13101 13102 func->srf_bf_idx = 13103 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 13104 } else { 13105 struct nlattr *attr, *mac_attr = 13106 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 13107 int n_entries, rem, i = 0; 13108 13109 if (!mac_attr) { 13110 err = -EINVAL; 13111 goto out; 13112 } 13113 13114 n_entries = validate_acl_mac_addrs(mac_attr); 13115 if (n_entries <= 0) { 13116 err = -EINVAL; 13117 goto out; 13118 } 13119 13120 func->srf_num_macs = n_entries; 13121 func->srf_macs = 13122 kcalloc(n_entries, sizeof(*func->srf_macs), 13123 GFP_KERNEL); 13124 if (!func->srf_macs) { 13125 err = -ENOMEM; 13126 goto out; 13127 } 13128 13129 nla_for_each_nested(attr, mac_attr, rem) 13130 memcpy(func->srf_macs[i++].addr, nla_data(attr), 13131 sizeof(*func->srf_macs)); 13132 } 13133 } 13134 13135 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 13136 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 13137 func, true); 13138 if (err) 13139 goto out; 13140 } 13141 13142 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 13143 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 13144 func, false); 13145 if (err) 13146 goto out; 13147 } 13148 13149 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13150 if (!msg) { 13151 err = -ENOMEM; 13152 goto out; 13153 } 13154 13155 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 13156 NL80211_CMD_ADD_NAN_FUNCTION); 13157 /* This can't really happen - we just allocated 4KB */ 13158 if (WARN_ON(!hdr)) { 13159 err = -ENOMEM; 13160 goto out; 13161 } 13162 13163 err = rdev_add_nan_func(rdev, wdev, func); 13164 out: 13165 if (err < 0) { 13166 cfg80211_free_nan_func(func); 13167 nlmsg_free(msg); 13168 return err; 13169 } 13170 13171 /* propagate the instance id and cookie to userspace */ 13172 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 13173 NL80211_ATTR_PAD)) 13174 goto nla_put_failure; 13175 13176 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC); 13177 if (!func_attr) 13178 goto nla_put_failure; 13179 13180 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 13181 func->instance_id)) 13182 goto nla_put_failure; 13183 13184 nla_nest_end(msg, func_attr); 13185 13186 genlmsg_end(msg, hdr); 13187 return genlmsg_reply(msg, info); 13188 13189 nla_put_failure: 13190 nlmsg_free(msg); 13191 return -ENOBUFS; 13192 } 13193 13194 static int nl80211_nan_del_func(struct sk_buff *skb, 13195 struct genl_info *info) 13196 { 13197 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13198 struct wireless_dev *wdev = info->user_ptr[1]; 13199 u64 cookie; 13200 13201 if (wdev->iftype != NL80211_IFTYPE_NAN) 13202 return -EOPNOTSUPP; 13203 13204 if (!wdev_running(wdev)) 13205 return -ENOTCONN; 13206 13207 if (!info->attrs[NL80211_ATTR_COOKIE]) 13208 return -EINVAL; 13209 13210 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 13211 13212 rdev_del_nan_func(rdev, wdev, cookie); 13213 13214 return 0; 13215 } 13216 13217 static int nl80211_nan_change_config(struct sk_buff *skb, 13218 struct genl_info *info) 13219 { 13220 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13221 struct wireless_dev *wdev = info->user_ptr[1]; 13222 struct cfg80211_nan_conf conf = {}; 13223 u32 changed = 0; 13224 13225 if (wdev->iftype != NL80211_IFTYPE_NAN) 13226 return -EOPNOTSUPP; 13227 13228 if (!wdev_running(wdev)) 13229 return -ENOTCONN; 13230 13231 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 13232 conf.master_pref = 13233 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 13234 if (conf.master_pref <= 1 || conf.master_pref == 255) 13235 return -EINVAL; 13236 13237 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 13238 } 13239 13240 if (info->attrs[NL80211_ATTR_BANDS]) { 13241 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 13242 13243 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 13244 return -EOPNOTSUPP; 13245 13246 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 13247 return -EINVAL; 13248 13249 conf.bands = bands; 13250 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 13251 } 13252 13253 if (!changed) 13254 return -EINVAL; 13255 13256 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 13257 } 13258 13259 void cfg80211_nan_match(struct wireless_dev *wdev, 13260 struct cfg80211_nan_match_params *match, gfp_t gfp) 13261 { 13262 struct wiphy *wiphy = wdev->wiphy; 13263 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13264 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 13265 struct sk_buff *msg; 13266 void *hdr; 13267 13268 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 13269 return; 13270 13271 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13272 if (!msg) 13273 return; 13274 13275 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 13276 if (!hdr) { 13277 nlmsg_free(msg); 13278 return; 13279 } 13280 13281 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13282 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13283 wdev->netdev->ifindex)) || 13284 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13285 NL80211_ATTR_PAD)) 13286 goto nla_put_failure; 13287 13288 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 13289 NL80211_ATTR_PAD) || 13290 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 13291 goto nla_put_failure; 13292 13293 match_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_MATCH); 13294 if (!match_attr) 13295 goto nla_put_failure; 13296 13297 local_func_attr = nla_nest_start_noflag(msg, 13298 NL80211_NAN_MATCH_FUNC_LOCAL); 13299 if (!local_func_attr) 13300 goto nla_put_failure; 13301 13302 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 13303 goto nla_put_failure; 13304 13305 nla_nest_end(msg, local_func_attr); 13306 13307 peer_func_attr = nla_nest_start_noflag(msg, 13308 NL80211_NAN_MATCH_FUNC_PEER); 13309 if (!peer_func_attr) 13310 goto nla_put_failure; 13311 13312 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 13313 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 13314 goto nla_put_failure; 13315 13316 if (match->info && match->info_len && 13317 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 13318 match->info)) 13319 goto nla_put_failure; 13320 13321 nla_nest_end(msg, peer_func_attr); 13322 nla_nest_end(msg, match_attr); 13323 genlmsg_end(msg, hdr); 13324 13325 if (!wdev->owner_nlportid) 13326 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 13327 msg, 0, NL80211_MCGRP_NAN, gfp); 13328 else 13329 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 13330 wdev->owner_nlportid); 13331 13332 return; 13333 13334 nla_put_failure: 13335 nlmsg_free(msg); 13336 } 13337 EXPORT_SYMBOL(cfg80211_nan_match); 13338 13339 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 13340 u8 inst_id, 13341 enum nl80211_nan_func_term_reason reason, 13342 u64 cookie, gfp_t gfp) 13343 { 13344 struct wiphy *wiphy = wdev->wiphy; 13345 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13346 struct sk_buff *msg; 13347 struct nlattr *func_attr; 13348 void *hdr; 13349 13350 if (WARN_ON(!inst_id)) 13351 return; 13352 13353 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13354 if (!msg) 13355 return; 13356 13357 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 13358 if (!hdr) { 13359 nlmsg_free(msg); 13360 return; 13361 } 13362 13363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13364 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13365 wdev->netdev->ifindex)) || 13366 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13367 NL80211_ATTR_PAD)) 13368 goto nla_put_failure; 13369 13370 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 13371 NL80211_ATTR_PAD)) 13372 goto nla_put_failure; 13373 13374 func_attr = nla_nest_start_noflag(msg, NL80211_ATTR_NAN_FUNC); 13375 if (!func_attr) 13376 goto nla_put_failure; 13377 13378 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 13379 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 13380 goto nla_put_failure; 13381 13382 nla_nest_end(msg, func_attr); 13383 genlmsg_end(msg, hdr); 13384 13385 if (!wdev->owner_nlportid) 13386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 13387 msg, 0, NL80211_MCGRP_NAN, gfp); 13388 else 13389 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 13390 wdev->owner_nlportid); 13391 13392 return; 13393 13394 nla_put_failure: 13395 nlmsg_free(msg); 13396 } 13397 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 13398 13399 static int nl80211_get_protocol_features(struct sk_buff *skb, 13400 struct genl_info *info) 13401 { 13402 void *hdr; 13403 struct sk_buff *msg; 13404 13405 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13406 if (!msg) 13407 return -ENOMEM; 13408 13409 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 13410 NL80211_CMD_GET_PROTOCOL_FEATURES); 13411 if (!hdr) 13412 goto nla_put_failure; 13413 13414 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 13415 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 13416 goto nla_put_failure; 13417 13418 genlmsg_end(msg, hdr); 13419 return genlmsg_reply(msg, info); 13420 13421 nla_put_failure: 13422 kfree_skb(msg); 13423 return -ENOBUFS; 13424 } 13425 13426 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 13427 { 13428 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13429 struct cfg80211_update_ft_ies_params ft_params; 13430 struct net_device *dev = info->user_ptr[1]; 13431 13432 if (!rdev->ops->update_ft_ies) 13433 return -EOPNOTSUPP; 13434 13435 if (!info->attrs[NL80211_ATTR_MDID] || 13436 !info->attrs[NL80211_ATTR_IE]) 13437 return -EINVAL; 13438 13439 memset(&ft_params, 0, sizeof(ft_params)); 13440 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 13441 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 13442 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 13443 13444 return rdev_update_ft_ies(rdev, dev, &ft_params); 13445 } 13446 13447 static int nl80211_crit_protocol_start(struct sk_buff *skb, 13448 struct genl_info *info) 13449 { 13450 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13451 struct wireless_dev *wdev = info->user_ptr[1]; 13452 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 13453 u16 duration; 13454 int ret; 13455 13456 if (!rdev->ops->crit_proto_start) 13457 return -EOPNOTSUPP; 13458 13459 if (WARN_ON(!rdev->ops->crit_proto_stop)) 13460 return -EINVAL; 13461 13462 if (rdev->crit_proto_nlportid) 13463 return -EBUSY; 13464 13465 /* determine protocol if provided */ 13466 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 13467 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 13468 13469 if (proto >= NUM_NL80211_CRIT_PROTO) 13470 return -EINVAL; 13471 13472 /* timeout must be provided */ 13473 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 13474 return -EINVAL; 13475 13476 duration = 13477 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 13478 13479 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 13480 if (!ret) 13481 rdev->crit_proto_nlportid = info->snd_portid; 13482 13483 return ret; 13484 } 13485 13486 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 13487 struct genl_info *info) 13488 { 13489 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13490 struct wireless_dev *wdev = info->user_ptr[1]; 13491 13492 if (!rdev->ops->crit_proto_stop) 13493 return -EOPNOTSUPP; 13494 13495 if (rdev->crit_proto_nlportid) { 13496 rdev->crit_proto_nlportid = 0; 13497 rdev_crit_proto_stop(rdev, wdev); 13498 } 13499 return 0; 13500 } 13501 13502 static int nl80211_vendor_check_policy(const struct wiphy_vendor_command *vcmd, 13503 struct nlattr *attr, 13504 struct netlink_ext_ack *extack) 13505 { 13506 if (vcmd->policy == VENDOR_CMD_RAW_DATA) { 13507 if (attr->nla_type & NLA_F_NESTED) { 13508 NL_SET_ERR_MSG_ATTR(extack, attr, 13509 "unexpected nested data"); 13510 return -EINVAL; 13511 } 13512 13513 return 0; 13514 } 13515 13516 if (!(attr->nla_type & NLA_F_NESTED)) { 13517 NL_SET_ERR_MSG_ATTR(extack, attr, "expected nested data"); 13518 return -EINVAL; 13519 } 13520 13521 return nla_validate_nested(attr, vcmd->maxattr, vcmd->policy, extack); 13522 } 13523 13524 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 13525 { 13526 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13527 struct wireless_dev *wdev = 13528 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 13529 int i, err; 13530 u32 vid, subcmd; 13531 13532 if (!rdev->wiphy.vendor_commands) 13533 return -EOPNOTSUPP; 13534 13535 if (IS_ERR(wdev)) { 13536 err = PTR_ERR(wdev); 13537 if (err != -EINVAL) 13538 return err; 13539 wdev = NULL; 13540 } else if (wdev->wiphy != &rdev->wiphy) { 13541 return -EINVAL; 13542 } 13543 13544 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 13545 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 13546 return -EINVAL; 13547 13548 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 13549 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 13550 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 13551 const struct wiphy_vendor_command *vcmd; 13552 void *data = NULL; 13553 int len = 0; 13554 13555 vcmd = &rdev->wiphy.vendor_commands[i]; 13556 13557 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 13558 continue; 13559 13560 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 13561 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 13562 if (!wdev) 13563 return -EINVAL; 13564 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 13565 !wdev->netdev) 13566 return -EINVAL; 13567 13568 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 13569 if (!wdev_running(wdev)) 13570 return -ENETDOWN; 13571 } 13572 } else { 13573 wdev = NULL; 13574 } 13575 13576 if (!vcmd->doit) 13577 return -EOPNOTSUPP; 13578 13579 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 13580 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 13581 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 13582 13583 err = nl80211_vendor_check_policy(vcmd, 13584 info->attrs[NL80211_ATTR_VENDOR_DATA], 13585 info->extack); 13586 if (err) 13587 return err; 13588 } 13589 13590 rdev->cur_cmd_info = info; 13591 err = vcmd->doit(&rdev->wiphy, wdev, data, len); 13592 rdev->cur_cmd_info = NULL; 13593 return err; 13594 } 13595 13596 return -EOPNOTSUPP; 13597 } 13598 13599 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 13600 struct netlink_callback *cb, 13601 struct cfg80211_registered_device **rdev, 13602 struct wireless_dev **wdev) 13603 { 13604 struct nlattr **attrbuf; 13605 u32 vid, subcmd; 13606 unsigned int i; 13607 int vcmd_idx = -1; 13608 int err; 13609 void *data = NULL; 13610 unsigned int data_len = 0; 13611 13612 if (cb->args[0]) { 13613 /* subtract the 1 again here */ 13614 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 13615 struct wireless_dev *tmp; 13616 13617 if (!wiphy) 13618 return -ENODEV; 13619 *rdev = wiphy_to_rdev(wiphy); 13620 *wdev = NULL; 13621 13622 if (cb->args[1]) { 13623 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 13624 if (tmp->identifier == cb->args[1] - 1) { 13625 *wdev = tmp; 13626 break; 13627 } 13628 } 13629 } 13630 13631 /* keep rtnl locked in successful case */ 13632 return 0; 13633 } 13634 13635 attrbuf = kcalloc(NUM_NL80211_ATTR, sizeof(*attrbuf), GFP_KERNEL); 13636 if (!attrbuf) 13637 return -ENOMEM; 13638 13639 err = nlmsg_parse_deprecated(cb->nlh, 13640 GENL_HDRLEN + nl80211_fam.hdrsize, 13641 attrbuf, nl80211_fam.maxattr, 13642 nl80211_policy, NULL); 13643 if (err) 13644 goto out; 13645 13646 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 13647 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) { 13648 err = -EINVAL; 13649 goto out; 13650 } 13651 13652 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf); 13653 if (IS_ERR(*wdev)) 13654 *wdev = NULL; 13655 13656 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 13657 if (IS_ERR(*rdev)) { 13658 err = PTR_ERR(*rdev); 13659 goto out; 13660 } 13661 13662 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 13663 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 13664 13665 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 13666 const struct wiphy_vendor_command *vcmd; 13667 13668 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 13669 13670 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 13671 continue; 13672 13673 if (!vcmd->dumpit) { 13674 err = -EOPNOTSUPP; 13675 goto out; 13676 } 13677 13678 vcmd_idx = i; 13679 break; 13680 } 13681 13682 if (vcmd_idx < 0) { 13683 err = -EOPNOTSUPP; 13684 goto out; 13685 } 13686 13687 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 13688 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 13689 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 13690 13691 err = nl80211_vendor_check_policy( 13692 &(*rdev)->wiphy.vendor_commands[vcmd_idx], 13693 attrbuf[NL80211_ATTR_VENDOR_DATA], 13694 cb->extack); 13695 if (err) 13696 goto out; 13697 } 13698 13699 /* 0 is the first index - add 1 to parse only once */ 13700 cb->args[0] = (*rdev)->wiphy_idx + 1; 13701 /* add 1 to know if it was NULL */ 13702 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 13703 cb->args[2] = vcmd_idx; 13704 cb->args[3] = (unsigned long)data; 13705 cb->args[4] = data_len; 13706 13707 /* keep rtnl locked in successful case */ 13708 err = 0; 13709 out: 13710 kfree(attrbuf); 13711 return err; 13712 } 13713 13714 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 13715 struct netlink_callback *cb) 13716 { 13717 struct cfg80211_registered_device *rdev; 13718 struct wireless_dev *wdev; 13719 unsigned int vcmd_idx; 13720 const struct wiphy_vendor_command *vcmd; 13721 void *data; 13722 int data_len; 13723 int err; 13724 struct nlattr *vendor_data; 13725 13726 rtnl_lock(); 13727 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 13728 if (err) 13729 goto out; 13730 13731 vcmd_idx = cb->args[2]; 13732 data = (void *)cb->args[3]; 13733 data_len = cb->args[4]; 13734 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 13735 13736 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 13737 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 13738 if (!wdev) { 13739 err = -EINVAL; 13740 goto out; 13741 } 13742 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 13743 !wdev->netdev) { 13744 err = -EINVAL; 13745 goto out; 13746 } 13747 13748 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 13749 if (!wdev_running(wdev)) { 13750 err = -ENETDOWN; 13751 goto out; 13752 } 13753 } 13754 } 13755 13756 while (1) { 13757 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 13758 cb->nlh->nlmsg_seq, NLM_F_MULTI, 13759 NL80211_CMD_VENDOR); 13760 if (!hdr) 13761 break; 13762 13763 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13764 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 13765 wdev_id(wdev), 13766 NL80211_ATTR_PAD))) { 13767 genlmsg_cancel(skb, hdr); 13768 break; 13769 } 13770 13771 vendor_data = nla_nest_start_noflag(skb, 13772 NL80211_ATTR_VENDOR_DATA); 13773 if (!vendor_data) { 13774 genlmsg_cancel(skb, hdr); 13775 break; 13776 } 13777 13778 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 13779 (unsigned long *)&cb->args[5]); 13780 nla_nest_end(skb, vendor_data); 13781 13782 if (err == -ENOBUFS || err == -ENOENT) { 13783 genlmsg_cancel(skb, hdr); 13784 break; 13785 } else if (err <= 0) { 13786 genlmsg_cancel(skb, hdr); 13787 goto out; 13788 } 13789 13790 genlmsg_end(skb, hdr); 13791 } 13792 13793 err = skb->len; 13794 out: 13795 rtnl_unlock(); 13796 return err; 13797 } 13798 13799 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 13800 enum nl80211_commands cmd, 13801 enum nl80211_attrs attr, 13802 int approxlen) 13803 { 13804 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13805 13806 if (WARN_ON(!rdev->cur_cmd_info)) 13807 return NULL; 13808 13809 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 13810 rdev->cur_cmd_info->snd_portid, 13811 rdev->cur_cmd_info->snd_seq, 13812 cmd, attr, NULL, GFP_KERNEL); 13813 } 13814 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 13815 13816 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 13817 { 13818 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 13819 void *hdr = ((void **)skb->cb)[1]; 13820 struct nlattr *data = ((void **)skb->cb)[2]; 13821 13822 /* clear CB data for netlink core to own from now on */ 13823 memset(skb->cb, 0, sizeof(skb->cb)); 13824 13825 if (WARN_ON(!rdev->cur_cmd_info)) { 13826 kfree_skb(skb); 13827 return -EINVAL; 13828 } 13829 13830 nla_nest_end(skb, data); 13831 genlmsg_end(skb, hdr); 13832 return genlmsg_reply(skb, rdev->cur_cmd_info); 13833 } 13834 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 13835 13836 unsigned int cfg80211_vendor_cmd_get_sender(struct wiphy *wiphy) 13837 { 13838 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13839 13840 if (WARN_ON(!rdev->cur_cmd_info)) 13841 return 0; 13842 13843 return rdev->cur_cmd_info->snd_portid; 13844 } 13845 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_get_sender); 13846 13847 static int nl80211_set_qos_map(struct sk_buff *skb, 13848 struct genl_info *info) 13849 { 13850 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13851 struct cfg80211_qos_map *qos_map = NULL; 13852 struct net_device *dev = info->user_ptr[1]; 13853 u8 *pos, len, num_des, des_len, des; 13854 int ret; 13855 13856 if (!rdev->ops->set_qos_map) 13857 return -EOPNOTSUPP; 13858 13859 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 13860 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 13861 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 13862 13863 if (len % 2) 13864 return -EINVAL; 13865 13866 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 13867 if (!qos_map) 13868 return -ENOMEM; 13869 13870 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 13871 if (num_des) { 13872 des_len = num_des * 13873 sizeof(struct cfg80211_dscp_exception); 13874 memcpy(qos_map->dscp_exception, pos, des_len); 13875 qos_map->num_des = num_des; 13876 for (des = 0; des < num_des; des++) { 13877 if (qos_map->dscp_exception[des].up > 7) { 13878 kfree(qos_map); 13879 return -EINVAL; 13880 } 13881 } 13882 pos += des_len; 13883 } 13884 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 13885 } 13886 13887 wdev_lock(dev->ieee80211_ptr); 13888 ret = nl80211_key_allowed(dev->ieee80211_ptr); 13889 if (!ret) 13890 ret = rdev_set_qos_map(rdev, dev, qos_map); 13891 wdev_unlock(dev->ieee80211_ptr); 13892 13893 kfree(qos_map); 13894 return ret; 13895 } 13896 13897 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 13898 { 13899 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13900 struct net_device *dev = info->user_ptr[1]; 13901 struct wireless_dev *wdev = dev->ieee80211_ptr; 13902 const u8 *peer; 13903 u8 tsid, up; 13904 u16 admitted_time = 0; 13905 int err; 13906 13907 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 13908 return -EOPNOTSUPP; 13909 13910 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 13911 !info->attrs[NL80211_ATTR_USER_PRIO]) 13912 return -EINVAL; 13913 13914 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 13915 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 13916 13917 /* WMM uses TIDs 0-7 even for TSPEC */ 13918 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 13919 /* TODO: handle 802.11 TSPEC/admission control 13920 * need more attributes for that (e.g. BA session requirement); 13921 * change the WMM adminssion test above to allow both then 13922 */ 13923 return -EINVAL; 13924 } 13925 13926 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 13927 13928 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 13929 admitted_time = 13930 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 13931 if (!admitted_time) 13932 return -EINVAL; 13933 } 13934 13935 wdev_lock(wdev); 13936 switch (wdev->iftype) { 13937 case NL80211_IFTYPE_STATION: 13938 case NL80211_IFTYPE_P2P_CLIENT: 13939 if (wdev->current_bss) 13940 break; 13941 err = -ENOTCONN; 13942 goto out; 13943 default: 13944 err = -EOPNOTSUPP; 13945 goto out; 13946 } 13947 13948 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 13949 13950 out: 13951 wdev_unlock(wdev); 13952 return err; 13953 } 13954 13955 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 13956 { 13957 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13958 struct net_device *dev = info->user_ptr[1]; 13959 struct wireless_dev *wdev = dev->ieee80211_ptr; 13960 const u8 *peer; 13961 u8 tsid; 13962 int err; 13963 13964 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 13965 return -EINVAL; 13966 13967 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 13968 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 13969 13970 wdev_lock(wdev); 13971 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 13972 wdev_unlock(wdev); 13973 13974 return err; 13975 } 13976 13977 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 13978 struct genl_info *info) 13979 { 13980 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 13981 struct net_device *dev = info->user_ptr[1]; 13982 struct wireless_dev *wdev = dev->ieee80211_ptr; 13983 struct cfg80211_chan_def chandef = {}; 13984 const u8 *addr; 13985 u8 oper_class; 13986 int err; 13987 13988 if (!rdev->ops->tdls_channel_switch || 13989 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 13990 return -EOPNOTSUPP; 13991 13992 switch (dev->ieee80211_ptr->iftype) { 13993 case NL80211_IFTYPE_STATION: 13994 case NL80211_IFTYPE_P2P_CLIENT: 13995 break; 13996 default: 13997 return -EOPNOTSUPP; 13998 } 13999 14000 if (!info->attrs[NL80211_ATTR_MAC] || 14001 !info->attrs[NL80211_ATTR_OPER_CLASS]) 14002 return -EINVAL; 14003 14004 err = nl80211_parse_chandef(rdev, info, &chandef); 14005 if (err) 14006 return err; 14007 14008 /* 14009 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 14010 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 14011 * specification is not defined for them. 14012 */ 14013 if (chandef.chan->band == NL80211_BAND_2GHZ && 14014 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 14015 chandef.width != NL80211_CHAN_WIDTH_20) 14016 return -EINVAL; 14017 14018 /* we will be active on the TDLS link */ 14019 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 14020 wdev->iftype)) 14021 return -EINVAL; 14022 14023 /* don't allow switching to DFS channels */ 14024 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 14025 return -EINVAL; 14026 14027 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 14028 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 14029 14030 wdev_lock(wdev); 14031 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 14032 wdev_unlock(wdev); 14033 14034 return err; 14035 } 14036 14037 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 14038 struct genl_info *info) 14039 { 14040 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14041 struct net_device *dev = info->user_ptr[1]; 14042 struct wireless_dev *wdev = dev->ieee80211_ptr; 14043 const u8 *addr; 14044 14045 if (!rdev->ops->tdls_channel_switch || 14046 !rdev->ops->tdls_cancel_channel_switch || 14047 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 14048 return -EOPNOTSUPP; 14049 14050 switch (dev->ieee80211_ptr->iftype) { 14051 case NL80211_IFTYPE_STATION: 14052 case NL80211_IFTYPE_P2P_CLIENT: 14053 break; 14054 default: 14055 return -EOPNOTSUPP; 14056 } 14057 14058 if (!info->attrs[NL80211_ATTR_MAC]) 14059 return -EINVAL; 14060 14061 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 14062 14063 wdev_lock(wdev); 14064 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 14065 wdev_unlock(wdev); 14066 14067 return 0; 14068 } 14069 14070 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 14071 struct genl_info *info) 14072 { 14073 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14074 struct net_device *dev = info->user_ptr[1]; 14075 struct wireless_dev *wdev = dev->ieee80211_ptr; 14076 const struct nlattr *nla; 14077 bool enabled; 14078 14079 if (!rdev->ops->set_multicast_to_unicast) 14080 return -EOPNOTSUPP; 14081 14082 if (wdev->iftype != NL80211_IFTYPE_AP && 14083 wdev->iftype != NL80211_IFTYPE_P2P_GO) 14084 return -EOPNOTSUPP; 14085 14086 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 14087 enabled = nla_get_flag(nla); 14088 14089 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 14090 } 14091 14092 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 14093 { 14094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14095 struct net_device *dev = info->user_ptr[1]; 14096 struct wireless_dev *wdev = dev->ieee80211_ptr; 14097 struct cfg80211_pmk_conf pmk_conf = {}; 14098 int ret; 14099 14100 if (wdev->iftype != NL80211_IFTYPE_STATION && 14101 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 14102 return -EOPNOTSUPP; 14103 14104 if (!wiphy_ext_feature_isset(&rdev->wiphy, 14105 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 14106 return -EOPNOTSUPP; 14107 14108 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 14109 return -EINVAL; 14110 14111 wdev_lock(wdev); 14112 if (!wdev->current_bss) { 14113 ret = -ENOTCONN; 14114 goto out; 14115 } 14116 14117 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 14118 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) { 14119 ret = -EINVAL; 14120 goto out; 14121 } 14122 14123 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 14124 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 14125 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 14126 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) { 14127 ret = -EINVAL; 14128 goto out; 14129 } 14130 14131 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) 14132 pmk_conf.pmk_r0_name = 14133 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 14134 14135 ret = rdev_set_pmk(rdev, dev, &pmk_conf); 14136 out: 14137 wdev_unlock(wdev); 14138 return ret; 14139 } 14140 14141 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 14142 { 14143 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14144 struct net_device *dev = info->user_ptr[1]; 14145 struct wireless_dev *wdev = dev->ieee80211_ptr; 14146 const u8 *aa; 14147 int ret; 14148 14149 if (wdev->iftype != NL80211_IFTYPE_STATION && 14150 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 14151 return -EOPNOTSUPP; 14152 14153 if (!wiphy_ext_feature_isset(&rdev->wiphy, 14154 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 14155 return -EOPNOTSUPP; 14156 14157 if (!info->attrs[NL80211_ATTR_MAC]) 14158 return -EINVAL; 14159 14160 wdev_lock(wdev); 14161 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 14162 ret = rdev_del_pmk(rdev, dev, aa); 14163 wdev_unlock(wdev); 14164 14165 return ret; 14166 } 14167 14168 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info) 14169 { 14170 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14171 struct net_device *dev = info->user_ptr[1]; 14172 struct cfg80211_external_auth_params params; 14173 14174 if (!rdev->ops->external_auth) 14175 return -EOPNOTSUPP; 14176 14177 if (!info->attrs[NL80211_ATTR_SSID] && 14178 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 14179 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 14180 return -EINVAL; 14181 14182 if (!info->attrs[NL80211_ATTR_BSSID]) 14183 return -EINVAL; 14184 14185 if (!info->attrs[NL80211_ATTR_STATUS_CODE]) 14186 return -EINVAL; 14187 14188 memset(¶ms, 0, sizeof(params)); 14189 14190 if (info->attrs[NL80211_ATTR_SSID]) { 14191 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 14192 if (params.ssid.ssid_len == 0) 14193 return -EINVAL; 14194 memcpy(params.ssid.ssid, 14195 nla_data(info->attrs[NL80211_ATTR_SSID]), 14196 params.ssid.ssid_len); 14197 } 14198 14199 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]), 14200 ETH_ALEN); 14201 14202 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 14203 14204 if (info->attrs[NL80211_ATTR_PMKID]) 14205 params.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 14206 14207 return rdev_external_auth(rdev, dev, ¶ms); 14208 } 14209 14210 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info) 14211 { 14212 bool dont_wait_for_ack = info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK]; 14213 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14214 struct net_device *dev = info->user_ptr[1]; 14215 struct wireless_dev *wdev = dev->ieee80211_ptr; 14216 const u8 *buf; 14217 size_t len; 14218 u8 *dest; 14219 u16 proto; 14220 bool noencrypt; 14221 u64 cookie = 0; 14222 int err; 14223 14224 if (!wiphy_ext_feature_isset(&rdev->wiphy, 14225 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 14226 return -EOPNOTSUPP; 14227 14228 if (!rdev->ops->tx_control_port) 14229 return -EOPNOTSUPP; 14230 14231 if (!info->attrs[NL80211_ATTR_FRAME] || 14232 !info->attrs[NL80211_ATTR_MAC] || 14233 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 14234 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing"); 14235 return -EINVAL; 14236 } 14237 14238 wdev_lock(wdev); 14239 14240 switch (wdev->iftype) { 14241 case NL80211_IFTYPE_AP: 14242 case NL80211_IFTYPE_P2P_GO: 14243 case NL80211_IFTYPE_MESH_POINT: 14244 break; 14245 case NL80211_IFTYPE_ADHOC: 14246 case NL80211_IFTYPE_STATION: 14247 case NL80211_IFTYPE_P2P_CLIENT: 14248 if (wdev->current_bss) 14249 break; 14250 err = -ENOTCONN; 14251 goto out; 14252 default: 14253 err = -EOPNOTSUPP; 14254 goto out; 14255 } 14256 14257 wdev_unlock(wdev); 14258 14259 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 14260 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 14261 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 14262 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 14263 noencrypt = 14264 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]); 14265 14266 err = rdev_tx_control_port(rdev, dev, buf, len, 14267 dest, cpu_to_be16(proto), noencrypt, 14268 dont_wait_for_ack ? NULL : &cookie); 14269 if (!err && !dont_wait_for_ack) 14270 nl_set_extack_cookie_u64(info->extack, cookie); 14271 return err; 14272 out: 14273 wdev_unlock(wdev); 14274 return err; 14275 } 14276 14277 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb, 14278 struct genl_info *info) 14279 { 14280 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14281 struct net_device *dev = info->user_ptr[1]; 14282 struct wireless_dev *wdev = dev->ieee80211_ptr; 14283 struct cfg80211_ftm_responder_stats ftm_stats = {}; 14284 struct sk_buff *msg; 14285 void *hdr; 14286 struct nlattr *ftm_stats_attr; 14287 int err; 14288 14289 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval) 14290 return -EOPNOTSUPP; 14291 14292 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats); 14293 if (err) 14294 return err; 14295 14296 if (!ftm_stats.filled) 14297 return -ENODATA; 14298 14299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14300 if (!msg) 14301 return -ENOMEM; 14302 14303 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 14304 NL80211_CMD_GET_FTM_RESPONDER_STATS); 14305 if (!hdr) 14306 goto nla_put_failure; 14307 14308 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 14309 goto nla_put_failure; 14310 14311 ftm_stats_attr = nla_nest_start_noflag(msg, 14312 NL80211_ATTR_FTM_RESPONDER_STATS); 14313 if (!ftm_stats_attr) 14314 goto nla_put_failure; 14315 14316 #define SET_FTM(field, name, type) \ 14317 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 14318 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \ 14319 ftm_stats.field)) \ 14320 goto nla_put_failure; } while (0) 14321 #define SET_FTM_U64(field, name) \ 14322 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 14323 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \ 14324 ftm_stats.field, NL80211_FTM_STATS_PAD)) \ 14325 goto nla_put_failure; } while (0) 14326 14327 SET_FTM(success_num, SUCCESS_NUM, u32); 14328 SET_FTM(partial_num, PARTIAL_NUM, u32); 14329 SET_FTM(failed_num, FAILED_NUM, u32); 14330 SET_FTM(asap_num, ASAP_NUM, u32); 14331 SET_FTM(non_asap_num, NON_ASAP_NUM, u32); 14332 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC); 14333 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32); 14334 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32); 14335 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32); 14336 #undef SET_FTM 14337 14338 nla_nest_end(msg, ftm_stats_attr); 14339 14340 genlmsg_end(msg, hdr); 14341 return genlmsg_reply(msg, info); 14342 14343 nla_put_failure: 14344 nlmsg_free(msg); 14345 return -ENOBUFS; 14346 } 14347 14348 static int nl80211_update_owe_info(struct sk_buff *skb, struct genl_info *info) 14349 { 14350 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14351 struct cfg80211_update_owe_info owe_info; 14352 struct net_device *dev = info->user_ptr[1]; 14353 14354 if (!rdev->ops->update_owe_info) 14355 return -EOPNOTSUPP; 14356 14357 if (!info->attrs[NL80211_ATTR_STATUS_CODE] || 14358 !info->attrs[NL80211_ATTR_MAC]) 14359 return -EINVAL; 14360 14361 memset(&owe_info, 0, sizeof(owe_info)); 14362 owe_info.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 14363 nla_memcpy(owe_info.peer, info->attrs[NL80211_ATTR_MAC], ETH_ALEN); 14364 14365 if (info->attrs[NL80211_ATTR_IE]) { 14366 owe_info.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 14367 owe_info.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 14368 } 14369 14370 return rdev_update_owe_info(rdev, dev, &owe_info); 14371 } 14372 14373 static int nl80211_probe_mesh_link(struct sk_buff *skb, struct genl_info *info) 14374 { 14375 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14376 struct net_device *dev = info->user_ptr[1]; 14377 struct wireless_dev *wdev = dev->ieee80211_ptr; 14378 struct station_info sinfo = {}; 14379 const u8 *buf; 14380 size_t len; 14381 u8 *dest; 14382 int err; 14383 14384 if (!rdev->ops->probe_mesh_link || !rdev->ops->get_station) 14385 return -EOPNOTSUPP; 14386 14387 if (!info->attrs[NL80211_ATTR_MAC] || 14388 !info->attrs[NL80211_ATTR_FRAME]) { 14389 GENL_SET_ERR_MSG(info, "Frame or MAC missing"); 14390 return -EINVAL; 14391 } 14392 14393 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 14394 return -EOPNOTSUPP; 14395 14396 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 14397 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 14398 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 14399 14400 if (len < sizeof(struct ethhdr)) 14401 return -EINVAL; 14402 14403 if (!ether_addr_equal(buf, dest) || is_multicast_ether_addr(buf) || 14404 !ether_addr_equal(buf + ETH_ALEN, dev->dev_addr)) 14405 return -EINVAL; 14406 14407 err = rdev_get_station(rdev, dev, dest, &sinfo); 14408 if (err) 14409 return err; 14410 14411 cfg80211_sinfo_release_content(&sinfo); 14412 14413 return rdev_probe_mesh_link(rdev, dev, dest, buf, len); 14414 } 14415 14416 static int parse_tid_conf(struct cfg80211_registered_device *rdev, 14417 struct nlattr *attrs[], struct net_device *dev, 14418 struct cfg80211_tid_cfg *tid_conf, 14419 struct genl_info *info, const u8 *peer) 14420 { 14421 struct netlink_ext_ack *extack = info->extack; 14422 u64 mask; 14423 int err; 14424 14425 if (!attrs[NL80211_TID_CONFIG_ATTR_TIDS]) 14426 return -EINVAL; 14427 14428 tid_conf->config_override = 14429 nla_get_flag(attrs[NL80211_TID_CONFIG_ATTR_OVERRIDE]); 14430 tid_conf->tids = nla_get_u16(attrs[NL80211_TID_CONFIG_ATTR_TIDS]); 14431 14432 if (tid_conf->config_override) { 14433 if (rdev->ops->reset_tid_config) { 14434 err = rdev_reset_tid_config(rdev, dev, peer, 14435 tid_conf->tids); 14436 if (err) 14437 return err; 14438 } else { 14439 return -EINVAL; 14440 } 14441 } 14442 14443 if (attrs[NL80211_TID_CONFIG_ATTR_NOACK]) { 14444 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_NOACK); 14445 tid_conf->noack = 14446 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_NOACK]); 14447 } 14448 14449 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]) { 14450 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_SHORT); 14451 tid_conf->retry_short = 14452 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_SHORT]); 14453 14454 if (tid_conf->retry_short > rdev->wiphy.max_data_retry_count) 14455 return -EINVAL; 14456 } 14457 14458 if (attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]) { 14459 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RETRY_LONG); 14460 tid_conf->retry_long = 14461 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RETRY_LONG]); 14462 14463 if (tid_conf->retry_long > rdev->wiphy.max_data_retry_count) 14464 return -EINVAL; 14465 } 14466 14467 if (attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]) { 14468 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMPDU_CTRL); 14469 tid_conf->ampdu = 14470 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMPDU_CTRL]); 14471 } 14472 14473 if (attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]) { 14474 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL); 14475 tid_conf->rtscts = 14476 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_RTSCTS_CTRL]); 14477 } 14478 14479 if (attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]) { 14480 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_AMSDU_CTRL); 14481 tid_conf->amsdu = 14482 nla_get_u8(attrs[NL80211_TID_CONFIG_ATTR_AMSDU_CTRL]); 14483 } 14484 14485 if (attrs[NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE]) { 14486 u32 idx = NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE, attr; 14487 14488 tid_conf->txrate_type = nla_get_u8(attrs[idx]); 14489 14490 if (tid_conf->txrate_type != NL80211_TX_RATE_AUTOMATIC) { 14491 attr = NL80211_TID_CONFIG_ATTR_TX_RATE; 14492 err = nl80211_parse_tx_bitrate_mask(info, attrs, attr, 14493 &tid_conf->txrate_mask, dev, 14494 true); 14495 if (err) 14496 return err; 14497 14498 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE); 14499 } 14500 tid_conf->mask |= BIT(NL80211_TID_CONFIG_ATTR_TX_RATE_TYPE); 14501 } 14502 14503 if (peer) 14504 mask = rdev->wiphy.tid_config_support.peer; 14505 else 14506 mask = rdev->wiphy.tid_config_support.vif; 14507 14508 if (tid_conf->mask & ~mask) { 14509 NL_SET_ERR_MSG(extack, "unsupported TID configuration"); 14510 return -ENOTSUPP; 14511 } 14512 14513 return 0; 14514 } 14515 14516 static int nl80211_set_tid_config(struct sk_buff *skb, 14517 struct genl_info *info) 14518 { 14519 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 14520 struct nlattr *attrs[NL80211_TID_CONFIG_ATTR_MAX + 1]; 14521 struct net_device *dev = info->user_ptr[1]; 14522 struct cfg80211_tid_config *tid_config; 14523 struct nlattr *tid; 14524 int conf_idx = 0, rem_conf; 14525 int ret = -EINVAL; 14526 u32 num_conf = 0; 14527 14528 if (!info->attrs[NL80211_ATTR_TID_CONFIG]) 14529 return -EINVAL; 14530 14531 if (!rdev->ops->set_tid_config) 14532 return -EOPNOTSUPP; 14533 14534 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG], 14535 rem_conf) 14536 num_conf++; 14537 14538 tid_config = kzalloc(struct_size(tid_config, tid_conf, num_conf), 14539 GFP_KERNEL); 14540 if (!tid_config) 14541 return -ENOMEM; 14542 14543 tid_config->n_tid_conf = num_conf; 14544 14545 if (info->attrs[NL80211_ATTR_MAC]) 14546 tid_config->peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 14547 14548 nla_for_each_nested(tid, info->attrs[NL80211_ATTR_TID_CONFIG], 14549 rem_conf) { 14550 ret = nla_parse_nested(attrs, NL80211_TID_CONFIG_ATTR_MAX, 14551 tid, NULL, NULL); 14552 14553 if (ret) 14554 goto bad_tid_conf; 14555 14556 ret = parse_tid_conf(rdev, attrs, dev, 14557 &tid_config->tid_conf[conf_idx], 14558 info, tid_config->peer); 14559 if (ret) 14560 goto bad_tid_conf; 14561 14562 conf_idx++; 14563 } 14564 14565 ret = rdev_set_tid_config(rdev, dev, tid_config); 14566 14567 bad_tid_conf: 14568 kfree(tid_config); 14569 return ret; 14570 } 14571 14572 #define NL80211_FLAG_NEED_WIPHY 0x01 14573 #define NL80211_FLAG_NEED_NETDEV 0x02 14574 #define NL80211_FLAG_NEED_RTNL 0x04 14575 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 14576 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 14577 NL80211_FLAG_CHECK_NETDEV_UP) 14578 #define NL80211_FLAG_NEED_WDEV 0x10 14579 /* If a netdev is associated, it must be UP, P2P must be started */ 14580 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 14581 NL80211_FLAG_CHECK_NETDEV_UP) 14582 #define NL80211_FLAG_CLEAR_SKB 0x20 14583 14584 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 14585 struct genl_info *info) 14586 { 14587 struct cfg80211_registered_device *rdev; 14588 struct wireless_dev *wdev; 14589 struct net_device *dev; 14590 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 14591 14592 if (rtnl) 14593 rtnl_lock(); 14594 14595 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 14596 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 14597 if (IS_ERR(rdev)) { 14598 if (rtnl) 14599 rtnl_unlock(); 14600 return PTR_ERR(rdev); 14601 } 14602 info->user_ptr[0] = rdev; 14603 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 14604 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 14605 ASSERT_RTNL(); 14606 14607 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 14608 info->attrs); 14609 if (IS_ERR(wdev)) { 14610 if (rtnl) 14611 rtnl_unlock(); 14612 return PTR_ERR(wdev); 14613 } 14614 14615 dev = wdev->netdev; 14616 rdev = wiphy_to_rdev(wdev->wiphy); 14617 14618 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 14619 if (!dev) { 14620 if (rtnl) 14621 rtnl_unlock(); 14622 return -EINVAL; 14623 } 14624 14625 info->user_ptr[1] = dev; 14626 } else { 14627 info->user_ptr[1] = wdev; 14628 } 14629 14630 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 14631 !wdev_running(wdev)) { 14632 if (rtnl) 14633 rtnl_unlock(); 14634 return -ENETDOWN; 14635 } 14636 14637 if (dev) 14638 dev_hold(dev); 14639 14640 info->user_ptr[0] = rdev; 14641 } 14642 14643 return 0; 14644 } 14645 14646 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 14647 struct genl_info *info) 14648 { 14649 if (info->user_ptr[1]) { 14650 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 14651 struct wireless_dev *wdev = info->user_ptr[1]; 14652 14653 if (wdev->netdev) 14654 dev_put(wdev->netdev); 14655 } else { 14656 dev_put(info->user_ptr[1]); 14657 } 14658 } 14659 14660 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 14661 rtnl_unlock(); 14662 14663 /* If needed, clear the netlink message payload from the SKB 14664 * as it might contain key data that shouldn't stick around on 14665 * the heap after the SKB is freed. The netlink message header 14666 * is still needed for further processing, so leave it intact. 14667 */ 14668 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 14669 struct nlmsghdr *nlh = nlmsg_hdr(skb); 14670 14671 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 14672 } 14673 } 14674 14675 static const struct genl_ops nl80211_ops[] = { 14676 { 14677 .cmd = NL80211_CMD_GET_WIPHY, 14678 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14679 .doit = nl80211_get_wiphy, 14680 .dumpit = nl80211_dump_wiphy, 14681 .done = nl80211_dump_wiphy_done, 14682 /* can be retrieved by unprivileged users */ 14683 .internal_flags = NL80211_FLAG_NEED_WIPHY | 14684 NL80211_FLAG_NEED_RTNL, 14685 }, 14686 }; 14687 14688 static const struct genl_small_ops nl80211_small_ops[] = { 14689 { 14690 .cmd = NL80211_CMD_SET_WIPHY, 14691 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14692 .doit = nl80211_set_wiphy, 14693 .flags = GENL_UNS_ADMIN_PERM, 14694 .internal_flags = NL80211_FLAG_NEED_RTNL, 14695 }, 14696 { 14697 .cmd = NL80211_CMD_GET_INTERFACE, 14698 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14699 .doit = nl80211_get_interface, 14700 .dumpit = nl80211_dump_interface, 14701 /* can be retrieved by unprivileged users */ 14702 .internal_flags = NL80211_FLAG_NEED_WDEV | 14703 NL80211_FLAG_NEED_RTNL, 14704 }, 14705 { 14706 .cmd = NL80211_CMD_SET_INTERFACE, 14707 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14708 .doit = nl80211_set_interface, 14709 .flags = GENL_UNS_ADMIN_PERM, 14710 .internal_flags = NL80211_FLAG_NEED_NETDEV | 14711 NL80211_FLAG_NEED_RTNL, 14712 }, 14713 { 14714 .cmd = NL80211_CMD_NEW_INTERFACE, 14715 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14716 .doit = nl80211_new_interface, 14717 .flags = GENL_UNS_ADMIN_PERM, 14718 .internal_flags = NL80211_FLAG_NEED_WIPHY | 14719 NL80211_FLAG_NEED_RTNL, 14720 }, 14721 { 14722 .cmd = NL80211_CMD_DEL_INTERFACE, 14723 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14724 .doit = nl80211_del_interface, 14725 .flags = GENL_UNS_ADMIN_PERM, 14726 .internal_flags = NL80211_FLAG_NEED_WDEV | 14727 NL80211_FLAG_NEED_RTNL, 14728 }, 14729 { 14730 .cmd = NL80211_CMD_GET_KEY, 14731 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14732 .doit = nl80211_get_key, 14733 .flags = GENL_UNS_ADMIN_PERM, 14734 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14735 NL80211_FLAG_NEED_RTNL, 14736 }, 14737 { 14738 .cmd = NL80211_CMD_SET_KEY, 14739 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14740 .doit = nl80211_set_key, 14741 .flags = GENL_UNS_ADMIN_PERM, 14742 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14743 NL80211_FLAG_NEED_RTNL | 14744 NL80211_FLAG_CLEAR_SKB, 14745 }, 14746 { 14747 .cmd = NL80211_CMD_NEW_KEY, 14748 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14749 .doit = nl80211_new_key, 14750 .flags = GENL_UNS_ADMIN_PERM, 14751 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14752 NL80211_FLAG_NEED_RTNL | 14753 NL80211_FLAG_CLEAR_SKB, 14754 }, 14755 { 14756 .cmd = NL80211_CMD_DEL_KEY, 14757 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14758 .doit = nl80211_del_key, 14759 .flags = GENL_UNS_ADMIN_PERM, 14760 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14761 NL80211_FLAG_NEED_RTNL, 14762 }, 14763 { 14764 .cmd = NL80211_CMD_SET_BEACON, 14765 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14766 .flags = GENL_UNS_ADMIN_PERM, 14767 .doit = nl80211_set_beacon, 14768 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14769 NL80211_FLAG_NEED_RTNL, 14770 }, 14771 { 14772 .cmd = NL80211_CMD_START_AP, 14773 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14774 .flags = GENL_UNS_ADMIN_PERM, 14775 .doit = nl80211_start_ap, 14776 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14777 NL80211_FLAG_NEED_RTNL, 14778 }, 14779 { 14780 .cmd = NL80211_CMD_STOP_AP, 14781 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14782 .flags = GENL_UNS_ADMIN_PERM, 14783 .doit = nl80211_stop_ap, 14784 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14785 NL80211_FLAG_NEED_RTNL, 14786 }, 14787 { 14788 .cmd = NL80211_CMD_GET_STATION, 14789 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14790 .doit = nl80211_get_station, 14791 .dumpit = nl80211_dump_station, 14792 .internal_flags = NL80211_FLAG_NEED_NETDEV | 14793 NL80211_FLAG_NEED_RTNL, 14794 }, 14795 { 14796 .cmd = NL80211_CMD_SET_STATION, 14797 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14798 .doit = nl80211_set_station, 14799 .flags = GENL_UNS_ADMIN_PERM, 14800 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14801 NL80211_FLAG_NEED_RTNL, 14802 }, 14803 { 14804 .cmd = NL80211_CMD_NEW_STATION, 14805 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14806 .doit = nl80211_new_station, 14807 .flags = GENL_UNS_ADMIN_PERM, 14808 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14809 NL80211_FLAG_NEED_RTNL, 14810 }, 14811 { 14812 .cmd = NL80211_CMD_DEL_STATION, 14813 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14814 .doit = nl80211_del_station, 14815 .flags = GENL_UNS_ADMIN_PERM, 14816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14817 NL80211_FLAG_NEED_RTNL, 14818 }, 14819 { 14820 .cmd = NL80211_CMD_GET_MPATH, 14821 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14822 .doit = nl80211_get_mpath, 14823 .dumpit = nl80211_dump_mpath, 14824 .flags = GENL_UNS_ADMIN_PERM, 14825 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14826 NL80211_FLAG_NEED_RTNL, 14827 }, 14828 { 14829 .cmd = NL80211_CMD_GET_MPP, 14830 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14831 .doit = nl80211_get_mpp, 14832 .dumpit = nl80211_dump_mpp, 14833 .flags = GENL_UNS_ADMIN_PERM, 14834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14835 NL80211_FLAG_NEED_RTNL, 14836 }, 14837 { 14838 .cmd = NL80211_CMD_SET_MPATH, 14839 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14840 .doit = nl80211_set_mpath, 14841 .flags = GENL_UNS_ADMIN_PERM, 14842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14843 NL80211_FLAG_NEED_RTNL, 14844 }, 14845 { 14846 .cmd = NL80211_CMD_NEW_MPATH, 14847 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14848 .doit = nl80211_new_mpath, 14849 .flags = GENL_UNS_ADMIN_PERM, 14850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14851 NL80211_FLAG_NEED_RTNL, 14852 }, 14853 { 14854 .cmd = NL80211_CMD_DEL_MPATH, 14855 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14856 .doit = nl80211_del_mpath, 14857 .flags = GENL_UNS_ADMIN_PERM, 14858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14859 NL80211_FLAG_NEED_RTNL, 14860 }, 14861 { 14862 .cmd = NL80211_CMD_SET_BSS, 14863 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14864 .doit = nl80211_set_bss, 14865 .flags = GENL_UNS_ADMIN_PERM, 14866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14867 NL80211_FLAG_NEED_RTNL, 14868 }, 14869 { 14870 .cmd = NL80211_CMD_GET_REG, 14871 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14872 .doit = nl80211_get_reg_do, 14873 .dumpit = nl80211_get_reg_dump, 14874 .internal_flags = NL80211_FLAG_NEED_RTNL, 14875 /* can be retrieved by unprivileged users */ 14876 }, 14877 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 14878 { 14879 .cmd = NL80211_CMD_SET_REG, 14880 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14881 .doit = nl80211_set_reg, 14882 .flags = GENL_ADMIN_PERM, 14883 .internal_flags = NL80211_FLAG_NEED_RTNL, 14884 }, 14885 #endif 14886 { 14887 .cmd = NL80211_CMD_REQ_SET_REG, 14888 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14889 .doit = nl80211_req_set_reg, 14890 .flags = GENL_ADMIN_PERM, 14891 }, 14892 { 14893 .cmd = NL80211_CMD_RELOAD_REGDB, 14894 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14895 .doit = nl80211_reload_regdb, 14896 .flags = GENL_ADMIN_PERM, 14897 }, 14898 { 14899 .cmd = NL80211_CMD_GET_MESH_CONFIG, 14900 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14901 .doit = nl80211_get_mesh_config, 14902 /* can be retrieved by unprivileged users */ 14903 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14904 NL80211_FLAG_NEED_RTNL, 14905 }, 14906 { 14907 .cmd = NL80211_CMD_SET_MESH_CONFIG, 14908 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14909 .doit = nl80211_update_mesh_config, 14910 .flags = GENL_UNS_ADMIN_PERM, 14911 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14912 NL80211_FLAG_NEED_RTNL, 14913 }, 14914 { 14915 .cmd = NL80211_CMD_TRIGGER_SCAN, 14916 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14917 .doit = nl80211_trigger_scan, 14918 .flags = GENL_UNS_ADMIN_PERM, 14919 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 14920 NL80211_FLAG_NEED_RTNL, 14921 }, 14922 { 14923 .cmd = NL80211_CMD_ABORT_SCAN, 14924 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14925 .doit = nl80211_abort_scan, 14926 .flags = GENL_UNS_ADMIN_PERM, 14927 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 14928 NL80211_FLAG_NEED_RTNL, 14929 }, 14930 { 14931 .cmd = NL80211_CMD_GET_SCAN, 14932 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14933 .dumpit = nl80211_dump_scan, 14934 }, 14935 { 14936 .cmd = NL80211_CMD_START_SCHED_SCAN, 14937 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14938 .doit = nl80211_start_sched_scan, 14939 .flags = GENL_UNS_ADMIN_PERM, 14940 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14941 NL80211_FLAG_NEED_RTNL, 14942 }, 14943 { 14944 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 14945 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14946 .doit = nl80211_stop_sched_scan, 14947 .flags = GENL_UNS_ADMIN_PERM, 14948 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14949 NL80211_FLAG_NEED_RTNL, 14950 }, 14951 { 14952 .cmd = NL80211_CMD_AUTHENTICATE, 14953 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14954 .doit = nl80211_authenticate, 14955 .flags = GENL_UNS_ADMIN_PERM, 14956 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14957 NL80211_FLAG_NEED_RTNL | 14958 NL80211_FLAG_CLEAR_SKB, 14959 }, 14960 { 14961 .cmd = NL80211_CMD_ASSOCIATE, 14962 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14963 .doit = nl80211_associate, 14964 .flags = GENL_UNS_ADMIN_PERM, 14965 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14966 NL80211_FLAG_NEED_RTNL | 14967 NL80211_FLAG_CLEAR_SKB, 14968 }, 14969 { 14970 .cmd = NL80211_CMD_DEAUTHENTICATE, 14971 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14972 .doit = nl80211_deauthenticate, 14973 .flags = GENL_UNS_ADMIN_PERM, 14974 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14975 NL80211_FLAG_NEED_RTNL, 14976 }, 14977 { 14978 .cmd = NL80211_CMD_DISASSOCIATE, 14979 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14980 .doit = nl80211_disassociate, 14981 .flags = GENL_UNS_ADMIN_PERM, 14982 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14983 NL80211_FLAG_NEED_RTNL, 14984 }, 14985 { 14986 .cmd = NL80211_CMD_JOIN_IBSS, 14987 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14988 .doit = nl80211_join_ibss, 14989 .flags = GENL_UNS_ADMIN_PERM, 14990 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14991 NL80211_FLAG_NEED_RTNL, 14992 }, 14993 { 14994 .cmd = NL80211_CMD_LEAVE_IBSS, 14995 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 14996 .doit = nl80211_leave_ibss, 14997 .flags = GENL_UNS_ADMIN_PERM, 14998 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 14999 NL80211_FLAG_NEED_RTNL, 15000 }, 15001 #ifdef CONFIG_NL80211_TESTMODE 15002 { 15003 .cmd = NL80211_CMD_TESTMODE, 15004 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15005 .doit = nl80211_testmode_do, 15006 .dumpit = nl80211_testmode_dump, 15007 .flags = GENL_UNS_ADMIN_PERM, 15008 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15009 NL80211_FLAG_NEED_RTNL, 15010 }, 15011 #endif 15012 { 15013 .cmd = NL80211_CMD_CONNECT, 15014 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15015 .doit = nl80211_connect, 15016 .flags = GENL_UNS_ADMIN_PERM, 15017 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15018 NL80211_FLAG_NEED_RTNL | 15019 NL80211_FLAG_CLEAR_SKB, 15020 }, 15021 { 15022 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 15023 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15024 .doit = nl80211_update_connect_params, 15025 .flags = GENL_ADMIN_PERM, 15026 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15027 NL80211_FLAG_NEED_RTNL | 15028 NL80211_FLAG_CLEAR_SKB, 15029 }, 15030 { 15031 .cmd = NL80211_CMD_DISCONNECT, 15032 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15033 .doit = nl80211_disconnect, 15034 .flags = GENL_UNS_ADMIN_PERM, 15035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15036 NL80211_FLAG_NEED_RTNL, 15037 }, 15038 { 15039 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 15040 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15041 .doit = nl80211_wiphy_netns, 15042 .flags = GENL_UNS_ADMIN_PERM, 15043 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15044 NL80211_FLAG_NEED_RTNL, 15045 }, 15046 { 15047 .cmd = NL80211_CMD_GET_SURVEY, 15048 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15049 .dumpit = nl80211_dump_survey, 15050 }, 15051 { 15052 .cmd = NL80211_CMD_SET_PMKSA, 15053 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15054 .doit = nl80211_setdel_pmksa, 15055 .flags = GENL_UNS_ADMIN_PERM, 15056 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15057 NL80211_FLAG_NEED_RTNL | 15058 NL80211_FLAG_CLEAR_SKB, 15059 }, 15060 { 15061 .cmd = NL80211_CMD_DEL_PMKSA, 15062 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15063 .doit = nl80211_setdel_pmksa, 15064 .flags = GENL_UNS_ADMIN_PERM, 15065 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15066 NL80211_FLAG_NEED_RTNL, 15067 }, 15068 { 15069 .cmd = NL80211_CMD_FLUSH_PMKSA, 15070 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15071 .doit = nl80211_flush_pmksa, 15072 .flags = GENL_UNS_ADMIN_PERM, 15073 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15074 NL80211_FLAG_NEED_RTNL, 15075 }, 15076 { 15077 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 15078 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15079 .doit = nl80211_remain_on_channel, 15080 .flags = GENL_UNS_ADMIN_PERM, 15081 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15082 NL80211_FLAG_NEED_RTNL, 15083 }, 15084 { 15085 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 15086 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15087 .doit = nl80211_cancel_remain_on_channel, 15088 .flags = GENL_UNS_ADMIN_PERM, 15089 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15090 NL80211_FLAG_NEED_RTNL, 15091 }, 15092 { 15093 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 15094 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15095 .doit = nl80211_set_tx_bitrate_mask, 15096 .flags = GENL_UNS_ADMIN_PERM, 15097 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15098 NL80211_FLAG_NEED_RTNL, 15099 }, 15100 { 15101 .cmd = NL80211_CMD_REGISTER_FRAME, 15102 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15103 .doit = nl80211_register_mgmt, 15104 .flags = GENL_UNS_ADMIN_PERM, 15105 .internal_flags = NL80211_FLAG_NEED_WDEV | 15106 NL80211_FLAG_NEED_RTNL, 15107 }, 15108 { 15109 .cmd = NL80211_CMD_FRAME, 15110 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15111 .doit = nl80211_tx_mgmt, 15112 .flags = GENL_UNS_ADMIN_PERM, 15113 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15114 NL80211_FLAG_NEED_RTNL, 15115 }, 15116 { 15117 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 15118 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15119 .doit = nl80211_tx_mgmt_cancel_wait, 15120 .flags = GENL_UNS_ADMIN_PERM, 15121 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15122 NL80211_FLAG_NEED_RTNL, 15123 }, 15124 { 15125 .cmd = NL80211_CMD_SET_POWER_SAVE, 15126 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15127 .doit = nl80211_set_power_save, 15128 .flags = GENL_UNS_ADMIN_PERM, 15129 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15130 NL80211_FLAG_NEED_RTNL, 15131 }, 15132 { 15133 .cmd = NL80211_CMD_GET_POWER_SAVE, 15134 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15135 .doit = nl80211_get_power_save, 15136 /* can be retrieved by unprivileged users */ 15137 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15138 NL80211_FLAG_NEED_RTNL, 15139 }, 15140 { 15141 .cmd = NL80211_CMD_SET_CQM, 15142 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15143 .doit = nl80211_set_cqm, 15144 .flags = GENL_UNS_ADMIN_PERM, 15145 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15146 NL80211_FLAG_NEED_RTNL, 15147 }, 15148 { 15149 .cmd = NL80211_CMD_SET_CHANNEL, 15150 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15151 .doit = nl80211_set_channel, 15152 .flags = GENL_UNS_ADMIN_PERM, 15153 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15154 NL80211_FLAG_NEED_RTNL, 15155 }, 15156 { 15157 .cmd = NL80211_CMD_JOIN_MESH, 15158 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15159 .doit = nl80211_join_mesh, 15160 .flags = GENL_UNS_ADMIN_PERM, 15161 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15162 NL80211_FLAG_NEED_RTNL, 15163 }, 15164 { 15165 .cmd = NL80211_CMD_LEAVE_MESH, 15166 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15167 .doit = nl80211_leave_mesh, 15168 .flags = GENL_UNS_ADMIN_PERM, 15169 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15170 NL80211_FLAG_NEED_RTNL, 15171 }, 15172 { 15173 .cmd = NL80211_CMD_JOIN_OCB, 15174 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15175 .doit = nl80211_join_ocb, 15176 .flags = GENL_UNS_ADMIN_PERM, 15177 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15178 NL80211_FLAG_NEED_RTNL, 15179 }, 15180 { 15181 .cmd = NL80211_CMD_LEAVE_OCB, 15182 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15183 .doit = nl80211_leave_ocb, 15184 .flags = GENL_UNS_ADMIN_PERM, 15185 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15186 NL80211_FLAG_NEED_RTNL, 15187 }, 15188 #ifdef CONFIG_PM 15189 { 15190 .cmd = NL80211_CMD_GET_WOWLAN, 15191 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15192 .doit = nl80211_get_wowlan, 15193 /* can be retrieved by unprivileged users */ 15194 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15195 NL80211_FLAG_NEED_RTNL, 15196 }, 15197 { 15198 .cmd = NL80211_CMD_SET_WOWLAN, 15199 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15200 .doit = nl80211_set_wowlan, 15201 .flags = GENL_UNS_ADMIN_PERM, 15202 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15203 NL80211_FLAG_NEED_RTNL, 15204 }, 15205 #endif 15206 { 15207 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 15208 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15209 .doit = nl80211_set_rekey_data, 15210 .flags = GENL_UNS_ADMIN_PERM, 15211 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15212 NL80211_FLAG_NEED_RTNL | 15213 NL80211_FLAG_CLEAR_SKB, 15214 }, 15215 { 15216 .cmd = NL80211_CMD_TDLS_MGMT, 15217 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15218 .doit = nl80211_tdls_mgmt, 15219 .flags = GENL_UNS_ADMIN_PERM, 15220 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15221 NL80211_FLAG_NEED_RTNL, 15222 }, 15223 { 15224 .cmd = NL80211_CMD_TDLS_OPER, 15225 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15226 .doit = nl80211_tdls_oper, 15227 .flags = GENL_UNS_ADMIN_PERM, 15228 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15229 NL80211_FLAG_NEED_RTNL, 15230 }, 15231 { 15232 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 15233 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15234 .doit = nl80211_register_unexpected_frame, 15235 .flags = GENL_UNS_ADMIN_PERM, 15236 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15237 NL80211_FLAG_NEED_RTNL, 15238 }, 15239 { 15240 .cmd = NL80211_CMD_PROBE_CLIENT, 15241 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15242 .doit = nl80211_probe_client, 15243 .flags = GENL_UNS_ADMIN_PERM, 15244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15245 NL80211_FLAG_NEED_RTNL, 15246 }, 15247 { 15248 .cmd = NL80211_CMD_REGISTER_BEACONS, 15249 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15250 .doit = nl80211_register_beacons, 15251 .flags = GENL_UNS_ADMIN_PERM, 15252 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15253 NL80211_FLAG_NEED_RTNL, 15254 }, 15255 { 15256 .cmd = NL80211_CMD_SET_NOACK_MAP, 15257 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15258 .doit = nl80211_set_noack_map, 15259 .flags = GENL_UNS_ADMIN_PERM, 15260 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15261 NL80211_FLAG_NEED_RTNL, 15262 }, 15263 { 15264 .cmd = NL80211_CMD_START_P2P_DEVICE, 15265 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15266 .doit = nl80211_start_p2p_device, 15267 .flags = GENL_UNS_ADMIN_PERM, 15268 .internal_flags = NL80211_FLAG_NEED_WDEV | 15269 NL80211_FLAG_NEED_RTNL, 15270 }, 15271 { 15272 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 15273 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15274 .doit = nl80211_stop_p2p_device, 15275 .flags = GENL_UNS_ADMIN_PERM, 15276 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15277 NL80211_FLAG_NEED_RTNL, 15278 }, 15279 { 15280 .cmd = NL80211_CMD_START_NAN, 15281 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15282 .doit = nl80211_start_nan, 15283 .flags = GENL_ADMIN_PERM, 15284 .internal_flags = NL80211_FLAG_NEED_WDEV | 15285 NL80211_FLAG_NEED_RTNL, 15286 }, 15287 { 15288 .cmd = NL80211_CMD_STOP_NAN, 15289 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15290 .doit = nl80211_stop_nan, 15291 .flags = GENL_ADMIN_PERM, 15292 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15293 NL80211_FLAG_NEED_RTNL, 15294 }, 15295 { 15296 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 15297 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15298 .doit = nl80211_nan_add_func, 15299 .flags = GENL_ADMIN_PERM, 15300 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15301 NL80211_FLAG_NEED_RTNL, 15302 }, 15303 { 15304 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 15305 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15306 .doit = nl80211_nan_del_func, 15307 .flags = GENL_ADMIN_PERM, 15308 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15309 NL80211_FLAG_NEED_RTNL, 15310 }, 15311 { 15312 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 15313 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15314 .doit = nl80211_nan_change_config, 15315 .flags = GENL_ADMIN_PERM, 15316 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15317 NL80211_FLAG_NEED_RTNL, 15318 }, 15319 { 15320 .cmd = NL80211_CMD_SET_MCAST_RATE, 15321 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15322 .doit = nl80211_set_mcast_rate, 15323 .flags = GENL_UNS_ADMIN_PERM, 15324 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15325 NL80211_FLAG_NEED_RTNL, 15326 }, 15327 { 15328 .cmd = NL80211_CMD_SET_MAC_ACL, 15329 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15330 .doit = nl80211_set_mac_acl, 15331 .flags = GENL_UNS_ADMIN_PERM, 15332 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15333 NL80211_FLAG_NEED_RTNL, 15334 }, 15335 { 15336 .cmd = NL80211_CMD_RADAR_DETECT, 15337 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15338 .doit = nl80211_start_radar_detection, 15339 .flags = GENL_UNS_ADMIN_PERM, 15340 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15341 NL80211_FLAG_NEED_RTNL, 15342 }, 15343 { 15344 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 15345 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15346 .doit = nl80211_get_protocol_features, 15347 }, 15348 { 15349 .cmd = NL80211_CMD_UPDATE_FT_IES, 15350 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15351 .doit = nl80211_update_ft_ies, 15352 .flags = GENL_UNS_ADMIN_PERM, 15353 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15354 NL80211_FLAG_NEED_RTNL, 15355 }, 15356 { 15357 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 15358 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15359 .doit = nl80211_crit_protocol_start, 15360 .flags = GENL_UNS_ADMIN_PERM, 15361 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15362 NL80211_FLAG_NEED_RTNL, 15363 }, 15364 { 15365 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 15366 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15367 .doit = nl80211_crit_protocol_stop, 15368 .flags = GENL_UNS_ADMIN_PERM, 15369 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15370 NL80211_FLAG_NEED_RTNL, 15371 }, 15372 { 15373 .cmd = NL80211_CMD_GET_COALESCE, 15374 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15375 .doit = nl80211_get_coalesce, 15376 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15377 NL80211_FLAG_NEED_RTNL, 15378 }, 15379 { 15380 .cmd = NL80211_CMD_SET_COALESCE, 15381 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15382 .doit = nl80211_set_coalesce, 15383 .flags = GENL_UNS_ADMIN_PERM, 15384 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15385 NL80211_FLAG_NEED_RTNL, 15386 }, 15387 { 15388 .cmd = NL80211_CMD_CHANNEL_SWITCH, 15389 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15390 .doit = nl80211_channel_switch, 15391 .flags = GENL_UNS_ADMIN_PERM, 15392 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15393 NL80211_FLAG_NEED_RTNL, 15394 }, 15395 { 15396 .cmd = NL80211_CMD_VENDOR, 15397 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15398 .doit = nl80211_vendor_cmd, 15399 .dumpit = nl80211_vendor_cmd_dump, 15400 .flags = GENL_UNS_ADMIN_PERM, 15401 .internal_flags = NL80211_FLAG_NEED_WIPHY | 15402 NL80211_FLAG_NEED_RTNL | 15403 NL80211_FLAG_CLEAR_SKB, 15404 }, 15405 { 15406 .cmd = NL80211_CMD_SET_QOS_MAP, 15407 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15408 .doit = nl80211_set_qos_map, 15409 .flags = GENL_UNS_ADMIN_PERM, 15410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15411 NL80211_FLAG_NEED_RTNL, 15412 }, 15413 { 15414 .cmd = NL80211_CMD_ADD_TX_TS, 15415 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15416 .doit = nl80211_add_tx_ts, 15417 .flags = GENL_UNS_ADMIN_PERM, 15418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15419 NL80211_FLAG_NEED_RTNL, 15420 }, 15421 { 15422 .cmd = NL80211_CMD_DEL_TX_TS, 15423 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15424 .doit = nl80211_del_tx_ts, 15425 .flags = GENL_UNS_ADMIN_PERM, 15426 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15427 NL80211_FLAG_NEED_RTNL, 15428 }, 15429 { 15430 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 15431 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15432 .doit = nl80211_tdls_channel_switch, 15433 .flags = GENL_UNS_ADMIN_PERM, 15434 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15435 NL80211_FLAG_NEED_RTNL, 15436 }, 15437 { 15438 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 15439 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15440 .doit = nl80211_tdls_cancel_channel_switch, 15441 .flags = GENL_UNS_ADMIN_PERM, 15442 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15443 NL80211_FLAG_NEED_RTNL, 15444 }, 15445 { 15446 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 15447 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15448 .doit = nl80211_set_multicast_to_unicast, 15449 .flags = GENL_UNS_ADMIN_PERM, 15450 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15451 NL80211_FLAG_NEED_RTNL, 15452 }, 15453 { 15454 .cmd = NL80211_CMD_SET_PMK, 15455 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15456 .doit = nl80211_set_pmk, 15457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15458 NL80211_FLAG_NEED_RTNL | 15459 NL80211_FLAG_CLEAR_SKB, 15460 }, 15461 { 15462 .cmd = NL80211_CMD_DEL_PMK, 15463 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15464 .doit = nl80211_del_pmk, 15465 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15466 NL80211_FLAG_NEED_RTNL, 15467 }, 15468 { 15469 .cmd = NL80211_CMD_EXTERNAL_AUTH, 15470 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15471 .doit = nl80211_external_auth, 15472 .flags = GENL_ADMIN_PERM, 15473 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15474 NL80211_FLAG_NEED_RTNL, 15475 }, 15476 { 15477 .cmd = NL80211_CMD_CONTROL_PORT_FRAME, 15478 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15479 .doit = nl80211_tx_control_port, 15480 .flags = GENL_UNS_ADMIN_PERM, 15481 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15482 NL80211_FLAG_NEED_RTNL, 15483 }, 15484 { 15485 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS, 15486 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15487 .doit = nl80211_get_ftm_responder_stats, 15488 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15489 NL80211_FLAG_NEED_RTNL, 15490 }, 15491 { 15492 .cmd = NL80211_CMD_PEER_MEASUREMENT_START, 15493 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15494 .doit = nl80211_pmsr_start, 15495 .flags = GENL_UNS_ADMIN_PERM, 15496 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 15497 NL80211_FLAG_NEED_RTNL, 15498 }, 15499 { 15500 .cmd = NL80211_CMD_NOTIFY_RADAR, 15501 .validate = GENL_DONT_VALIDATE_STRICT | GENL_DONT_VALIDATE_DUMP, 15502 .doit = nl80211_notify_radar_detection, 15503 .flags = GENL_UNS_ADMIN_PERM, 15504 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15505 NL80211_FLAG_NEED_RTNL, 15506 }, 15507 { 15508 .cmd = NL80211_CMD_UPDATE_OWE_INFO, 15509 .doit = nl80211_update_owe_info, 15510 .flags = GENL_ADMIN_PERM, 15511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15512 NL80211_FLAG_NEED_RTNL, 15513 }, 15514 { 15515 .cmd = NL80211_CMD_PROBE_MESH_LINK, 15516 .doit = nl80211_probe_mesh_link, 15517 .flags = GENL_UNS_ADMIN_PERM, 15518 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 15519 NL80211_FLAG_NEED_RTNL, 15520 }, 15521 { 15522 .cmd = NL80211_CMD_SET_TID_CONFIG, 15523 .doit = nl80211_set_tid_config, 15524 .flags = GENL_UNS_ADMIN_PERM, 15525 .internal_flags = NL80211_FLAG_NEED_NETDEV | 15526 NL80211_FLAG_NEED_RTNL, 15527 }, 15528 }; 15529 15530 static struct genl_family nl80211_fam __ro_after_init = { 15531 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 15532 .hdrsize = 0, /* no private header */ 15533 .version = 1, /* no particular meaning now */ 15534 .maxattr = NL80211_ATTR_MAX, 15535 .policy = nl80211_policy, 15536 .netnsok = true, 15537 .pre_doit = nl80211_pre_doit, 15538 .post_doit = nl80211_post_doit, 15539 .module = THIS_MODULE, 15540 .ops = nl80211_ops, 15541 .n_ops = ARRAY_SIZE(nl80211_ops), 15542 .small_ops = nl80211_small_ops, 15543 .n_small_ops = ARRAY_SIZE(nl80211_small_ops), 15544 .mcgrps = nl80211_mcgrps, 15545 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 15546 .parallel_ops = true, 15547 }; 15548 15549 /* notification functions */ 15550 15551 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 15552 enum nl80211_commands cmd) 15553 { 15554 struct sk_buff *msg; 15555 struct nl80211_dump_wiphy_state state = {}; 15556 15557 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 15558 cmd != NL80211_CMD_DEL_WIPHY); 15559 15560 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15561 if (!msg) 15562 return; 15563 15564 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 15565 nlmsg_free(msg); 15566 return; 15567 } 15568 15569 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15570 NL80211_MCGRP_CONFIG, GFP_KERNEL); 15571 } 15572 15573 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 15574 struct wireless_dev *wdev, 15575 enum nl80211_commands cmd) 15576 { 15577 struct sk_buff *msg; 15578 15579 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15580 if (!msg) 15581 return; 15582 15583 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, cmd) < 0) { 15584 nlmsg_free(msg); 15585 return; 15586 } 15587 15588 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15589 NL80211_MCGRP_CONFIG, GFP_KERNEL); 15590 } 15591 15592 static int nl80211_add_scan_req(struct sk_buff *msg, 15593 struct cfg80211_registered_device *rdev) 15594 { 15595 struct cfg80211_scan_request *req = rdev->scan_req; 15596 struct nlattr *nest; 15597 int i; 15598 struct cfg80211_scan_info *info; 15599 15600 if (WARN_ON(!req)) 15601 return 0; 15602 15603 nest = nla_nest_start_noflag(msg, NL80211_ATTR_SCAN_SSIDS); 15604 if (!nest) 15605 goto nla_put_failure; 15606 for (i = 0; i < req->n_ssids; i++) { 15607 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 15608 goto nla_put_failure; 15609 } 15610 nla_nest_end(msg, nest); 15611 15612 if (req->flags & NL80211_SCAN_FLAG_FREQ_KHZ) { 15613 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQ_KHZ); 15614 if (!nest) 15615 goto nla_put_failure; 15616 for (i = 0; i < req->n_channels; i++) { 15617 if (nla_put_u32(msg, i, 15618 ieee80211_channel_to_khz(req->channels[i]))) 15619 goto nla_put_failure; 15620 } 15621 nla_nest_end(msg, nest); 15622 } else { 15623 nest = nla_nest_start_noflag(msg, 15624 NL80211_ATTR_SCAN_FREQUENCIES); 15625 if (!nest) 15626 goto nla_put_failure; 15627 for (i = 0; i < req->n_channels; i++) { 15628 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 15629 goto nla_put_failure; 15630 } 15631 nla_nest_end(msg, nest); 15632 } 15633 15634 if (req->ie && 15635 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 15636 goto nla_put_failure; 15637 15638 if (req->flags && 15639 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 15640 goto nla_put_failure; 15641 15642 info = rdev->int_scan_req ? &rdev->int_scan_req->info : 15643 &rdev->scan_req->info; 15644 if (info->scan_start_tsf && 15645 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 15646 info->scan_start_tsf, NL80211_BSS_PAD) || 15647 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 15648 info->tsf_bssid))) 15649 goto nla_put_failure; 15650 15651 return 0; 15652 nla_put_failure: 15653 return -ENOBUFS; 15654 } 15655 15656 static int nl80211_prep_scan_msg(struct sk_buff *msg, 15657 struct cfg80211_registered_device *rdev, 15658 struct wireless_dev *wdev, 15659 u32 portid, u32 seq, int flags, 15660 u32 cmd) 15661 { 15662 void *hdr; 15663 15664 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 15665 if (!hdr) 15666 return -1; 15667 15668 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15669 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15670 wdev->netdev->ifindex)) || 15671 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15672 NL80211_ATTR_PAD)) 15673 goto nla_put_failure; 15674 15675 /* ignore errors and send incomplete event anyway */ 15676 nl80211_add_scan_req(msg, rdev); 15677 15678 genlmsg_end(msg, hdr); 15679 return 0; 15680 15681 nla_put_failure: 15682 genlmsg_cancel(msg, hdr); 15683 return -EMSGSIZE; 15684 } 15685 15686 static int 15687 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 15688 struct cfg80211_sched_scan_request *req, u32 cmd) 15689 { 15690 void *hdr; 15691 15692 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 15693 if (!hdr) 15694 return -1; 15695 15696 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 15697 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 15698 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 15699 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 15700 NL80211_ATTR_PAD)) 15701 goto nla_put_failure; 15702 15703 genlmsg_end(msg, hdr); 15704 return 0; 15705 15706 nla_put_failure: 15707 genlmsg_cancel(msg, hdr); 15708 return -EMSGSIZE; 15709 } 15710 15711 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 15712 struct wireless_dev *wdev) 15713 { 15714 struct sk_buff *msg; 15715 15716 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15717 if (!msg) 15718 return; 15719 15720 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 15721 NL80211_CMD_TRIGGER_SCAN) < 0) { 15722 nlmsg_free(msg); 15723 return; 15724 } 15725 15726 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15727 NL80211_MCGRP_SCAN, GFP_KERNEL); 15728 } 15729 15730 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 15731 struct wireless_dev *wdev, bool aborted) 15732 { 15733 struct sk_buff *msg; 15734 15735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15736 if (!msg) 15737 return NULL; 15738 15739 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 15740 aborted ? NL80211_CMD_SCAN_ABORTED : 15741 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 15742 nlmsg_free(msg); 15743 return NULL; 15744 } 15745 15746 return msg; 15747 } 15748 15749 /* send message created by nl80211_build_scan_msg() */ 15750 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 15751 struct sk_buff *msg) 15752 { 15753 if (!msg) 15754 return; 15755 15756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15757 NL80211_MCGRP_SCAN, GFP_KERNEL); 15758 } 15759 15760 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 15761 { 15762 struct sk_buff *msg; 15763 15764 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15765 if (!msg) 15766 return; 15767 15768 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 15769 nlmsg_free(msg); 15770 return; 15771 } 15772 15773 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 15774 NL80211_MCGRP_SCAN, GFP_KERNEL); 15775 } 15776 15777 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 15778 struct regulatory_request *request) 15779 { 15780 /* Userspace can always count this one always being set */ 15781 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 15782 goto nla_put_failure; 15783 15784 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 15785 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 15786 NL80211_REGDOM_TYPE_WORLD)) 15787 goto nla_put_failure; 15788 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 15789 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 15790 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 15791 goto nla_put_failure; 15792 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 15793 request->intersect) { 15794 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 15795 NL80211_REGDOM_TYPE_INTERSECTION)) 15796 goto nla_put_failure; 15797 } else { 15798 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 15799 NL80211_REGDOM_TYPE_COUNTRY) || 15800 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 15801 request->alpha2)) 15802 goto nla_put_failure; 15803 } 15804 15805 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 15806 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 15807 15808 if (wiphy && 15809 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 15810 goto nla_put_failure; 15811 15812 if (wiphy && 15813 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 15814 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 15815 goto nla_put_failure; 15816 } 15817 15818 return true; 15819 15820 nla_put_failure: 15821 return false; 15822 } 15823 15824 /* 15825 * This can happen on global regulatory changes or device specific settings 15826 * based on custom regulatory domains. 15827 */ 15828 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 15829 struct regulatory_request *request) 15830 { 15831 struct sk_buff *msg; 15832 void *hdr; 15833 15834 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15835 if (!msg) 15836 return; 15837 15838 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 15839 if (!hdr) 15840 goto nla_put_failure; 15841 15842 if (!nl80211_reg_change_event_fill(msg, request)) 15843 goto nla_put_failure; 15844 15845 genlmsg_end(msg, hdr); 15846 15847 rcu_read_lock(); 15848 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 15849 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 15850 rcu_read_unlock(); 15851 15852 return; 15853 15854 nla_put_failure: 15855 nlmsg_free(msg); 15856 } 15857 15858 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 15859 struct net_device *netdev, 15860 const u8 *buf, size_t len, 15861 enum nl80211_commands cmd, gfp_t gfp, 15862 int uapsd_queues, const u8 *req_ies, 15863 size_t req_ies_len) 15864 { 15865 struct sk_buff *msg; 15866 void *hdr; 15867 15868 msg = nlmsg_new(100 + len + req_ies_len, gfp); 15869 if (!msg) 15870 return; 15871 15872 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 15873 if (!hdr) { 15874 nlmsg_free(msg); 15875 return; 15876 } 15877 15878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15880 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 15881 (req_ies && 15882 nla_put(msg, NL80211_ATTR_REQ_IE, req_ies_len, req_ies))) 15883 goto nla_put_failure; 15884 15885 if (uapsd_queues >= 0) { 15886 struct nlattr *nla_wmm = 15887 nla_nest_start_noflag(msg, NL80211_ATTR_STA_WME); 15888 if (!nla_wmm) 15889 goto nla_put_failure; 15890 15891 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 15892 uapsd_queues)) 15893 goto nla_put_failure; 15894 15895 nla_nest_end(msg, nla_wmm); 15896 } 15897 15898 genlmsg_end(msg, hdr); 15899 15900 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15901 NL80211_MCGRP_MLME, gfp); 15902 return; 15903 15904 nla_put_failure: 15905 nlmsg_free(msg); 15906 } 15907 15908 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 15909 struct net_device *netdev, const u8 *buf, 15910 size_t len, gfp_t gfp) 15911 { 15912 nl80211_send_mlme_event(rdev, netdev, buf, len, 15913 NL80211_CMD_AUTHENTICATE, gfp, -1, NULL, 0); 15914 } 15915 15916 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 15917 struct net_device *netdev, const u8 *buf, 15918 size_t len, gfp_t gfp, int uapsd_queues, 15919 const u8 *req_ies, size_t req_ies_len) 15920 { 15921 nl80211_send_mlme_event(rdev, netdev, buf, len, 15922 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues, 15923 req_ies, req_ies_len); 15924 } 15925 15926 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 15927 struct net_device *netdev, const u8 *buf, 15928 size_t len, gfp_t gfp) 15929 { 15930 nl80211_send_mlme_event(rdev, netdev, buf, len, 15931 NL80211_CMD_DEAUTHENTICATE, gfp, -1, NULL, 0); 15932 } 15933 15934 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 15935 struct net_device *netdev, const u8 *buf, 15936 size_t len, gfp_t gfp) 15937 { 15938 nl80211_send_mlme_event(rdev, netdev, buf, len, 15939 NL80211_CMD_DISASSOCIATE, gfp, -1, NULL, 0); 15940 } 15941 15942 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 15943 size_t len) 15944 { 15945 struct wireless_dev *wdev = dev->ieee80211_ptr; 15946 struct wiphy *wiphy = wdev->wiphy; 15947 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15948 const struct ieee80211_mgmt *mgmt = (void *)buf; 15949 u32 cmd; 15950 15951 if (WARN_ON(len < 2)) 15952 return; 15953 15954 if (ieee80211_is_deauth(mgmt->frame_control)) { 15955 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 15956 } else if (ieee80211_is_disassoc(mgmt->frame_control)) { 15957 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 15958 } else if (ieee80211_is_beacon(mgmt->frame_control)) { 15959 if (wdev->unprot_beacon_reported && 15960 elapsed_jiffies_msecs(wdev->unprot_beacon_reported) < 10000) 15961 return; 15962 cmd = NL80211_CMD_UNPROT_BEACON; 15963 wdev->unprot_beacon_reported = jiffies; 15964 } else { 15965 return; 15966 } 15967 15968 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 15969 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1, 15970 NULL, 0); 15971 } 15972 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 15973 15974 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 15975 struct net_device *netdev, int cmd, 15976 const u8 *addr, gfp_t gfp) 15977 { 15978 struct sk_buff *msg; 15979 void *hdr; 15980 15981 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15982 if (!msg) 15983 return; 15984 15985 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 15986 if (!hdr) { 15987 nlmsg_free(msg); 15988 return; 15989 } 15990 15991 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15992 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15993 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 15994 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 15995 goto nla_put_failure; 15996 15997 genlmsg_end(msg, hdr); 15998 15999 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16000 NL80211_MCGRP_MLME, gfp); 16001 return; 16002 16003 nla_put_failure: 16004 nlmsg_free(msg); 16005 } 16006 16007 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 16008 struct net_device *netdev, const u8 *addr, 16009 gfp_t gfp) 16010 { 16011 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 16012 addr, gfp); 16013 } 16014 16015 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 16016 struct net_device *netdev, const u8 *addr, 16017 gfp_t gfp) 16018 { 16019 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 16020 addr, gfp); 16021 } 16022 16023 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 16024 struct net_device *netdev, 16025 struct cfg80211_connect_resp_params *cr, 16026 gfp_t gfp) 16027 { 16028 struct sk_buff *msg; 16029 void *hdr; 16030 16031 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 16032 cr->fils.kek_len + cr->fils.pmk_len + 16033 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 16034 if (!msg) 16035 return; 16036 16037 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 16038 if (!hdr) { 16039 nlmsg_free(msg); 16040 return; 16041 } 16042 16043 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16044 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16045 (cr->bssid && 16046 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) || 16047 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 16048 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 16049 cr->status) || 16050 (cr->status < 0 && 16051 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 16052 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 16053 cr->timeout_reason))) || 16054 (cr->req_ie && 16055 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 16056 (cr->resp_ie && 16057 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 16058 cr->resp_ie)) || 16059 (cr->fils.update_erp_next_seq_num && 16060 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 16061 cr->fils.erp_next_seq_num)) || 16062 (cr->status == WLAN_STATUS_SUCCESS && 16063 ((cr->fils.kek && 16064 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len, 16065 cr->fils.kek)) || 16066 (cr->fils.pmk && 16067 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) || 16068 (cr->fils.pmkid && 16069 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid))))) 16070 goto nla_put_failure; 16071 16072 genlmsg_end(msg, hdr); 16073 16074 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16075 NL80211_MCGRP_MLME, gfp); 16076 return; 16077 16078 nla_put_failure: 16079 nlmsg_free(msg); 16080 } 16081 16082 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 16083 struct net_device *netdev, 16084 struct cfg80211_roam_info *info, gfp_t gfp) 16085 { 16086 struct sk_buff *msg; 16087 void *hdr; 16088 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid; 16089 16090 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len + 16091 info->fils.kek_len + info->fils.pmk_len + 16092 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 16093 if (!msg) 16094 return; 16095 16096 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 16097 if (!hdr) { 16098 nlmsg_free(msg); 16099 return; 16100 } 16101 16102 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16103 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16104 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 16105 (info->req_ie && 16106 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 16107 info->req_ie)) || 16108 (info->resp_ie && 16109 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 16110 info->resp_ie)) || 16111 (info->fils.update_erp_next_seq_num && 16112 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 16113 info->fils.erp_next_seq_num)) || 16114 (info->fils.kek && 16115 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len, 16116 info->fils.kek)) || 16117 (info->fils.pmk && 16118 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) || 16119 (info->fils.pmkid && 16120 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid))) 16121 goto nla_put_failure; 16122 16123 genlmsg_end(msg, hdr); 16124 16125 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16126 NL80211_MCGRP_MLME, gfp); 16127 return; 16128 16129 nla_put_failure: 16130 nlmsg_free(msg); 16131 } 16132 16133 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev, 16134 struct net_device *netdev, const u8 *bssid) 16135 { 16136 struct sk_buff *msg; 16137 void *hdr; 16138 16139 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 16140 if (!msg) 16141 return; 16142 16143 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED); 16144 if (!hdr) { 16145 nlmsg_free(msg); 16146 return; 16147 } 16148 16149 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16150 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16151 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 16152 goto nla_put_failure; 16153 16154 genlmsg_end(msg, hdr); 16155 16156 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16157 NL80211_MCGRP_MLME, GFP_KERNEL); 16158 return; 16159 16160 nla_put_failure: 16161 nlmsg_free(msg); 16162 } 16163 16164 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 16165 struct net_device *netdev, u16 reason, 16166 const u8 *ie, size_t ie_len, bool from_ap) 16167 { 16168 struct sk_buff *msg; 16169 void *hdr; 16170 16171 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 16172 if (!msg) 16173 return; 16174 16175 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 16176 if (!hdr) { 16177 nlmsg_free(msg); 16178 return; 16179 } 16180 16181 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16182 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16183 (reason && 16184 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 16185 (from_ap && 16186 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 16187 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 16188 goto nla_put_failure; 16189 16190 genlmsg_end(msg, hdr); 16191 16192 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16193 NL80211_MCGRP_MLME, GFP_KERNEL); 16194 return; 16195 16196 nla_put_failure: 16197 nlmsg_free(msg); 16198 } 16199 16200 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 16201 struct net_device *netdev, const u8 *bssid, 16202 gfp_t gfp) 16203 { 16204 struct sk_buff *msg; 16205 void *hdr; 16206 16207 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16208 if (!msg) 16209 return; 16210 16211 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 16212 if (!hdr) { 16213 nlmsg_free(msg); 16214 return; 16215 } 16216 16217 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16218 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16219 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 16220 goto nla_put_failure; 16221 16222 genlmsg_end(msg, hdr); 16223 16224 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16225 NL80211_MCGRP_MLME, gfp); 16226 return; 16227 16228 nla_put_failure: 16229 nlmsg_free(msg); 16230 } 16231 16232 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 16233 const u8 *ie, u8 ie_len, 16234 int sig_dbm, gfp_t gfp) 16235 { 16236 struct wireless_dev *wdev = dev->ieee80211_ptr; 16237 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16238 struct sk_buff *msg; 16239 void *hdr; 16240 16241 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 16242 return; 16243 16244 trace_cfg80211_notify_new_peer_candidate(dev, addr); 16245 16246 msg = nlmsg_new(100 + ie_len, gfp); 16247 if (!msg) 16248 return; 16249 16250 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 16251 if (!hdr) { 16252 nlmsg_free(msg); 16253 return; 16254 } 16255 16256 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16257 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16258 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 16259 (ie_len && ie && 16260 nla_put(msg, NL80211_ATTR_IE, ie_len, ie)) || 16261 (sig_dbm && 16262 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm))) 16263 goto nla_put_failure; 16264 16265 genlmsg_end(msg, hdr); 16266 16267 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16268 NL80211_MCGRP_MLME, gfp); 16269 return; 16270 16271 nla_put_failure: 16272 nlmsg_free(msg); 16273 } 16274 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 16275 16276 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 16277 struct net_device *netdev, const u8 *addr, 16278 enum nl80211_key_type key_type, int key_id, 16279 const u8 *tsc, gfp_t gfp) 16280 { 16281 struct sk_buff *msg; 16282 void *hdr; 16283 16284 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16285 if (!msg) 16286 return; 16287 16288 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 16289 if (!hdr) { 16290 nlmsg_free(msg); 16291 return; 16292 } 16293 16294 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16295 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16296 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 16297 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 16298 (key_id != -1 && 16299 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 16300 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 16301 goto nla_put_failure; 16302 16303 genlmsg_end(msg, hdr); 16304 16305 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16306 NL80211_MCGRP_MLME, gfp); 16307 return; 16308 16309 nla_put_failure: 16310 nlmsg_free(msg); 16311 } 16312 16313 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 16314 struct ieee80211_channel *channel_before, 16315 struct ieee80211_channel *channel_after) 16316 { 16317 struct sk_buff *msg; 16318 void *hdr; 16319 struct nlattr *nl_freq; 16320 16321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 16322 if (!msg) 16323 return; 16324 16325 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 16326 if (!hdr) { 16327 nlmsg_free(msg); 16328 return; 16329 } 16330 16331 /* 16332 * Since we are applying the beacon hint to a wiphy we know its 16333 * wiphy_idx is valid 16334 */ 16335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 16336 goto nla_put_failure; 16337 16338 /* Before */ 16339 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_BEFORE); 16340 if (!nl_freq) 16341 goto nla_put_failure; 16342 16343 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false)) 16344 goto nla_put_failure; 16345 nla_nest_end(msg, nl_freq); 16346 16347 /* After */ 16348 nl_freq = nla_nest_start_noflag(msg, NL80211_ATTR_FREQ_AFTER); 16349 if (!nl_freq) 16350 goto nla_put_failure; 16351 16352 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false)) 16353 goto nla_put_failure; 16354 nla_nest_end(msg, nl_freq); 16355 16356 genlmsg_end(msg, hdr); 16357 16358 rcu_read_lock(); 16359 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 16360 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 16361 rcu_read_unlock(); 16362 16363 return; 16364 16365 nla_put_failure: 16366 nlmsg_free(msg); 16367 } 16368 16369 static void nl80211_send_remain_on_chan_event( 16370 int cmd, struct cfg80211_registered_device *rdev, 16371 struct wireless_dev *wdev, u64 cookie, 16372 struct ieee80211_channel *chan, 16373 unsigned int duration, gfp_t gfp) 16374 { 16375 struct sk_buff *msg; 16376 void *hdr; 16377 16378 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16379 if (!msg) 16380 return; 16381 16382 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 16383 if (!hdr) { 16384 nlmsg_free(msg); 16385 return; 16386 } 16387 16388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16389 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 16390 wdev->netdev->ifindex)) || 16391 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16392 NL80211_ATTR_PAD) || 16393 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 16394 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 16395 NL80211_CHAN_NO_HT) || 16396 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 16397 NL80211_ATTR_PAD)) 16398 goto nla_put_failure; 16399 16400 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 16401 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 16402 goto nla_put_failure; 16403 16404 genlmsg_end(msg, hdr); 16405 16406 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16407 NL80211_MCGRP_MLME, gfp); 16408 return; 16409 16410 nla_put_failure: 16411 nlmsg_free(msg); 16412 } 16413 16414 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 16415 struct ieee80211_channel *chan, 16416 unsigned int duration, gfp_t gfp) 16417 { 16418 struct wiphy *wiphy = wdev->wiphy; 16419 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16420 16421 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 16422 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 16423 rdev, wdev, cookie, chan, 16424 duration, gfp); 16425 } 16426 EXPORT_SYMBOL(cfg80211_ready_on_channel); 16427 16428 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 16429 struct ieee80211_channel *chan, 16430 gfp_t gfp) 16431 { 16432 struct wiphy *wiphy = wdev->wiphy; 16433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16434 16435 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 16436 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 16437 rdev, wdev, cookie, chan, 0, gfp); 16438 } 16439 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 16440 16441 void cfg80211_tx_mgmt_expired(struct wireless_dev *wdev, u64 cookie, 16442 struct ieee80211_channel *chan, 16443 gfp_t gfp) 16444 { 16445 struct wiphy *wiphy = wdev->wiphy; 16446 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16447 16448 trace_cfg80211_tx_mgmt_expired(wdev, cookie, chan); 16449 nl80211_send_remain_on_chan_event(NL80211_CMD_FRAME_WAIT_CANCEL, 16450 rdev, wdev, cookie, chan, 0, gfp); 16451 } 16452 EXPORT_SYMBOL(cfg80211_tx_mgmt_expired); 16453 16454 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 16455 struct station_info *sinfo, gfp_t gfp) 16456 { 16457 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 16458 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16459 struct sk_buff *msg; 16460 16461 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 16462 16463 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16464 if (!msg) 16465 return; 16466 16467 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 16468 rdev, dev, mac_addr, sinfo) < 0) { 16469 nlmsg_free(msg); 16470 return; 16471 } 16472 16473 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16474 NL80211_MCGRP_MLME, gfp); 16475 } 16476 EXPORT_SYMBOL(cfg80211_new_sta); 16477 16478 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 16479 struct station_info *sinfo, gfp_t gfp) 16480 { 16481 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 16482 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16483 struct sk_buff *msg; 16484 struct station_info empty_sinfo = {}; 16485 16486 if (!sinfo) 16487 sinfo = &empty_sinfo; 16488 16489 trace_cfg80211_del_sta(dev, mac_addr); 16490 16491 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16492 if (!msg) { 16493 cfg80211_sinfo_release_content(sinfo); 16494 return; 16495 } 16496 16497 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 16498 rdev, dev, mac_addr, sinfo) < 0) { 16499 nlmsg_free(msg); 16500 return; 16501 } 16502 16503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16504 NL80211_MCGRP_MLME, gfp); 16505 } 16506 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 16507 16508 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 16509 enum nl80211_connect_failed_reason reason, 16510 gfp_t gfp) 16511 { 16512 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 16513 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16514 struct sk_buff *msg; 16515 void *hdr; 16516 16517 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 16518 if (!msg) 16519 return; 16520 16521 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 16522 if (!hdr) { 16523 nlmsg_free(msg); 16524 return; 16525 } 16526 16527 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16528 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 16529 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 16530 goto nla_put_failure; 16531 16532 genlmsg_end(msg, hdr); 16533 16534 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16535 NL80211_MCGRP_MLME, gfp); 16536 return; 16537 16538 nla_put_failure: 16539 nlmsg_free(msg); 16540 } 16541 EXPORT_SYMBOL(cfg80211_conn_failed); 16542 16543 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 16544 const u8 *addr, gfp_t gfp) 16545 { 16546 struct wireless_dev *wdev = dev->ieee80211_ptr; 16547 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16548 struct sk_buff *msg; 16549 void *hdr; 16550 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid); 16551 16552 if (!nlportid) 16553 return false; 16554 16555 msg = nlmsg_new(100, gfp); 16556 if (!msg) 16557 return true; 16558 16559 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 16560 if (!hdr) { 16561 nlmsg_free(msg); 16562 return true; 16563 } 16564 16565 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16566 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16567 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 16568 goto nla_put_failure; 16569 16570 genlmsg_end(msg, hdr); 16571 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 16572 return true; 16573 16574 nla_put_failure: 16575 nlmsg_free(msg); 16576 return true; 16577 } 16578 16579 bool cfg80211_rx_spurious_frame(struct net_device *dev, 16580 const u8 *addr, gfp_t gfp) 16581 { 16582 struct wireless_dev *wdev = dev->ieee80211_ptr; 16583 bool ret; 16584 16585 trace_cfg80211_rx_spurious_frame(dev, addr); 16586 16587 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 16588 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 16589 trace_cfg80211_return_bool(false); 16590 return false; 16591 } 16592 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 16593 addr, gfp); 16594 trace_cfg80211_return_bool(ret); 16595 return ret; 16596 } 16597 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 16598 16599 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 16600 const u8 *addr, gfp_t gfp) 16601 { 16602 struct wireless_dev *wdev = dev->ieee80211_ptr; 16603 bool ret; 16604 16605 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 16606 16607 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 16608 wdev->iftype != NL80211_IFTYPE_P2P_GO && 16609 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 16610 trace_cfg80211_return_bool(false); 16611 return false; 16612 } 16613 ret = __nl80211_unexpected_frame(dev, 16614 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 16615 addr, gfp); 16616 trace_cfg80211_return_bool(ret); 16617 return ret; 16618 } 16619 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 16620 16621 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 16622 struct wireless_dev *wdev, u32 nlportid, 16623 int freq, int sig_dbm, 16624 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 16625 { 16626 struct net_device *netdev = wdev->netdev; 16627 struct sk_buff *msg; 16628 void *hdr; 16629 16630 msg = nlmsg_new(100 + len, gfp); 16631 if (!msg) 16632 return -ENOMEM; 16633 16634 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 16635 if (!hdr) { 16636 nlmsg_free(msg); 16637 return -ENOMEM; 16638 } 16639 16640 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16641 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 16642 netdev->ifindex)) || 16643 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16644 NL80211_ATTR_PAD) || 16645 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, KHZ_TO_MHZ(freq)) || 16646 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, freq % 1000) || 16647 (sig_dbm && 16648 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 16649 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 16650 (flags && 16651 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 16652 goto nla_put_failure; 16653 16654 genlmsg_end(msg, hdr); 16655 16656 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 16657 16658 nla_put_failure: 16659 nlmsg_free(msg); 16660 return -ENOBUFS; 16661 } 16662 16663 static void nl80211_frame_tx_status(struct wireless_dev *wdev, u64 cookie, 16664 const u8 *buf, size_t len, bool ack, 16665 gfp_t gfp, enum nl80211_commands command) 16666 { 16667 struct wiphy *wiphy = wdev->wiphy; 16668 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16669 struct net_device *netdev = wdev->netdev; 16670 struct sk_buff *msg; 16671 void *hdr; 16672 16673 if (command == NL80211_CMD_FRAME_TX_STATUS) 16674 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 16675 else 16676 trace_cfg80211_control_port_tx_status(wdev, cookie, ack); 16677 16678 msg = nlmsg_new(100 + len, gfp); 16679 if (!msg) 16680 return; 16681 16682 hdr = nl80211hdr_put(msg, 0, 0, 0, command); 16683 if (!hdr) { 16684 nlmsg_free(msg); 16685 return; 16686 } 16687 16688 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16689 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 16690 netdev->ifindex)) || 16691 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16692 NL80211_ATTR_PAD) || 16693 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 16694 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 16695 NL80211_ATTR_PAD) || 16696 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 16697 goto nla_put_failure; 16698 16699 genlmsg_end(msg, hdr); 16700 16701 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16702 NL80211_MCGRP_MLME, gfp); 16703 return; 16704 16705 nla_put_failure: 16706 nlmsg_free(msg); 16707 } 16708 16709 void cfg80211_control_port_tx_status(struct wireless_dev *wdev, u64 cookie, 16710 const u8 *buf, size_t len, bool ack, 16711 gfp_t gfp) 16712 { 16713 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp, 16714 NL80211_CMD_CONTROL_PORT_FRAME_TX_STATUS); 16715 } 16716 EXPORT_SYMBOL(cfg80211_control_port_tx_status); 16717 16718 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 16719 const u8 *buf, size_t len, bool ack, gfp_t gfp) 16720 { 16721 nl80211_frame_tx_status(wdev, cookie, buf, len, ack, gfp, 16722 NL80211_CMD_FRAME_TX_STATUS); 16723 } 16724 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 16725 16726 static int __nl80211_rx_control_port(struct net_device *dev, 16727 struct sk_buff *skb, 16728 bool unencrypted, gfp_t gfp) 16729 { 16730 struct wireless_dev *wdev = dev->ieee80211_ptr; 16731 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16732 struct ethhdr *ehdr = eth_hdr(skb); 16733 const u8 *addr = ehdr->h_source; 16734 u16 proto = be16_to_cpu(skb->protocol); 16735 struct sk_buff *msg; 16736 void *hdr; 16737 struct nlattr *frame; 16738 16739 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid); 16740 16741 if (!nlportid) 16742 return -ENOENT; 16743 16744 msg = nlmsg_new(100 + skb->len, gfp); 16745 if (!msg) 16746 return -ENOMEM; 16747 16748 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME); 16749 if (!hdr) { 16750 nlmsg_free(msg); 16751 return -ENOBUFS; 16752 } 16753 16754 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16755 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16756 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16757 NL80211_ATTR_PAD) || 16758 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 16759 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) || 16760 (unencrypted && nla_put_flag(msg, 16761 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 16762 goto nla_put_failure; 16763 16764 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len); 16765 if (!frame) 16766 goto nla_put_failure; 16767 16768 skb_copy_bits(skb, 0, nla_data(frame), skb->len); 16769 genlmsg_end(msg, hdr); 16770 16771 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 16772 16773 nla_put_failure: 16774 nlmsg_free(msg); 16775 return -ENOBUFS; 16776 } 16777 16778 bool cfg80211_rx_control_port(struct net_device *dev, 16779 struct sk_buff *skb, bool unencrypted) 16780 { 16781 int ret; 16782 16783 trace_cfg80211_rx_control_port(dev, skb, unencrypted); 16784 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC); 16785 trace_cfg80211_return_bool(ret == 0); 16786 return ret == 0; 16787 } 16788 EXPORT_SYMBOL(cfg80211_rx_control_port); 16789 16790 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 16791 const char *mac, gfp_t gfp) 16792 { 16793 struct wireless_dev *wdev = dev->ieee80211_ptr; 16794 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16795 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16796 void **cb; 16797 16798 if (!msg) 16799 return NULL; 16800 16801 cb = (void **)msg->cb; 16802 16803 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 16804 if (!cb[0]) { 16805 nlmsg_free(msg); 16806 return NULL; 16807 } 16808 16809 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16810 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 16811 goto nla_put_failure; 16812 16813 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 16814 goto nla_put_failure; 16815 16816 cb[1] = nla_nest_start_noflag(msg, NL80211_ATTR_CQM); 16817 if (!cb[1]) 16818 goto nla_put_failure; 16819 16820 cb[2] = rdev; 16821 16822 return msg; 16823 nla_put_failure: 16824 nlmsg_free(msg); 16825 return NULL; 16826 } 16827 16828 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 16829 { 16830 void **cb = (void **)msg->cb; 16831 struct cfg80211_registered_device *rdev = cb[2]; 16832 16833 nla_nest_end(msg, cb[1]); 16834 genlmsg_end(msg, cb[0]); 16835 16836 memset(msg->cb, 0, sizeof(msg->cb)); 16837 16838 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16839 NL80211_MCGRP_MLME, gfp); 16840 } 16841 16842 void cfg80211_cqm_rssi_notify(struct net_device *dev, 16843 enum nl80211_cqm_rssi_threshold_event rssi_event, 16844 s32 rssi_level, gfp_t gfp) 16845 { 16846 struct sk_buff *msg; 16847 struct wireless_dev *wdev = dev->ieee80211_ptr; 16848 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16849 16850 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 16851 16852 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 16853 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 16854 return; 16855 16856 if (wdev->cqm_config) { 16857 wdev->cqm_config->last_rssi_event_value = rssi_level; 16858 16859 cfg80211_cqm_rssi_update(rdev, dev); 16860 16861 if (rssi_level == 0) 16862 rssi_level = wdev->cqm_config->last_rssi_event_value; 16863 } 16864 16865 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 16866 if (!msg) 16867 return; 16868 16869 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 16870 rssi_event)) 16871 goto nla_put_failure; 16872 16873 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 16874 rssi_level)) 16875 goto nla_put_failure; 16876 16877 cfg80211_send_cqm(msg, gfp); 16878 16879 return; 16880 16881 nla_put_failure: 16882 nlmsg_free(msg); 16883 } 16884 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 16885 16886 void cfg80211_cqm_txe_notify(struct net_device *dev, 16887 const u8 *peer, u32 num_packets, 16888 u32 rate, u32 intvl, gfp_t gfp) 16889 { 16890 struct sk_buff *msg; 16891 16892 msg = cfg80211_prepare_cqm(dev, peer, gfp); 16893 if (!msg) 16894 return; 16895 16896 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 16897 goto nla_put_failure; 16898 16899 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 16900 goto nla_put_failure; 16901 16902 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 16903 goto nla_put_failure; 16904 16905 cfg80211_send_cqm(msg, gfp); 16906 return; 16907 16908 nla_put_failure: 16909 nlmsg_free(msg); 16910 } 16911 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 16912 16913 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 16914 const u8 *peer, u32 num_packets, gfp_t gfp) 16915 { 16916 struct sk_buff *msg; 16917 16918 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 16919 16920 msg = cfg80211_prepare_cqm(dev, peer, gfp); 16921 if (!msg) 16922 return; 16923 16924 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 16925 goto nla_put_failure; 16926 16927 cfg80211_send_cqm(msg, gfp); 16928 return; 16929 16930 nla_put_failure: 16931 nlmsg_free(msg); 16932 } 16933 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 16934 16935 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 16936 { 16937 struct sk_buff *msg; 16938 16939 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 16940 if (!msg) 16941 return; 16942 16943 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 16944 goto nla_put_failure; 16945 16946 cfg80211_send_cqm(msg, gfp); 16947 return; 16948 16949 nla_put_failure: 16950 nlmsg_free(msg); 16951 } 16952 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 16953 16954 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 16955 struct net_device *netdev, const u8 *bssid, 16956 const u8 *replay_ctr, gfp_t gfp) 16957 { 16958 struct sk_buff *msg; 16959 struct nlattr *rekey_attr; 16960 void *hdr; 16961 16962 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16963 if (!msg) 16964 return; 16965 16966 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 16967 if (!hdr) { 16968 nlmsg_free(msg); 16969 return; 16970 } 16971 16972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16973 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 16974 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 16975 goto nla_put_failure; 16976 16977 rekey_attr = nla_nest_start_noflag(msg, NL80211_ATTR_REKEY_DATA); 16978 if (!rekey_attr) 16979 goto nla_put_failure; 16980 16981 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 16982 NL80211_REPLAY_CTR_LEN, replay_ctr)) 16983 goto nla_put_failure; 16984 16985 nla_nest_end(msg, rekey_attr); 16986 16987 genlmsg_end(msg, hdr); 16988 16989 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 16990 NL80211_MCGRP_MLME, gfp); 16991 return; 16992 16993 nla_put_failure: 16994 nlmsg_free(msg); 16995 } 16996 16997 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 16998 const u8 *replay_ctr, gfp_t gfp) 16999 { 17000 struct wireless_dev *wdev = dev->ieee80211_ptr; 17001 struct wiphy *wiphy = wdev->wiphy; 17002 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17003 17004 trace_cfg80211_gtk_rekey_notify(dev, bssid); 17005 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 17006 } 17007 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 17008 17009 static void 17010 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 17011 struct net_device *netdev, int index, 17012 const u8 *bssid, bool preauth, gfp_t gfp) 17013 { 17014 struct sk_buff *msg; 17015 struct nlattr *attr; 17016 void *hdr; 17017 17018 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17019 if (!msg) 17020 return; 17021 17022 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 17023 if (!hdr) { 17024 nlmsg_free(msg); 17025 return; 17026 } 17027 17028 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17029 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 17030 goto nla_put_failure; 17031 17032 attr = nla_nest_start_noflag(msg, NL80211_ATTR_PMKSA_CANDIDATE); 17033 if (!attr) 17034 goto nla_put_failure; 17035 17036 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 17037 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 17038 (preauth && 17039 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 17040 goto nla_put_failure; 17041 17042 nla_nest_end(msg, attr); 17043 17044 genlmsg_end(msg, hdr); 17045 17046 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17047 NL80211_MCGRP_MLME, gfp); 17048 return; 17049 17050 nla_put_failure: 17051 nlmsg_free(msg); 17052 } 17053 17054 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 17055 const u8 *bssid, bool preauth, gfp_t gfp) 17056 { 17057 struct wireless_dev *wdev = dev->ieee80211_ptr; 17058 struct wiphy *wiphy = wdev->wiphy; 17059 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17060 17061 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 17062 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 17063 } 17064 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 17065 17066 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 17067 struct net_device *netdev, 17068 struct cfg80211_chan_def *chandef, 17069 gfp_t gfp, 17070 enum nl80211_commands notif, 17071 u8 count) 17072 { 17073 struct sk_buff *msg; 17074 void *hdr; 17075 17076 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17077 if (!msg) 17078 return; 17079 17080 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 17081 if (!hdr) { 17082 nlmsg_free(msg); 17083 return; 17084 } 17085 17086 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 17087 goto nla_put_failure; 17088 17089 if (nl80211_send_chandef(msg, chandef)) 17090 goto nla_put_failure; 17091 17092 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 17093 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 17094 goto nla_put_failure; 17095 17096 genlmsg_end(msg, hdr); 17097 17098 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17099 NL80211_MCGRP_MLME, gfp); 17100 return; 17101 17102 nla_put_failure: 17103 nlmsg_free(msg); 17104 } 17105 17106 void cfg80211_ch_switch_notify(struct net_device *dev, 17107 struct cfg80211_chan_def *chandef) 17108 { 17109 struct wireless_dev *wdev = dev->ieee80211_ptr; 17110 struct wiphy *wiphy = wdev->wiphy; 17111 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17112 17113 ASSERT_WDEV_LOCK(wdev); 17114 17115 trace_cfg80211_ch_switch_notify(dev, chandef); 17116 17117 wdev->chandef = *chandef; 17118 wdev->preset_chandef = *chandef; 17119 17120 if (wdev->iftype == NL80211_IFTYPE_STATION && 17121 !WARN_ON(!wdev->current_bss)) 17122 cfg80211_update_assoc_bss_entry(wdev, chandef->chan); 17123 17124 cfg80211_sched_dfs_chan_update(rdev); 17125 17126 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 17127 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 17128 } 17129 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 17130 17131 void cfg80211_ch_switch_started_notify(struct net_device *dev, 17132 struct cfg80211_chan_def *chandef, 17133 u8 count) 17134 { 17135 struct wireless_dev *wdev = dev->ieee80211_ptr; 17136 struct wiphy *wiphy = wdev->wiphy; 17137 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17138 17139 trace_cfg80211_ch_switch_started_notify(dev, chandef); 17140 17141 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 17142 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 17143 } 17144 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 17145 17146 void 17147 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 17148 const struct cfg80211_chan_def *chandef, 17149 enum nl80211_radar_event event, 17150 struct net_device *netdev, gfp_t gfp) 17151 { 17152 struct sk_buff *msg; 17153 void *hdr; 17154 17155 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17156 if (!msg) 17157 return; 17158 17159 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 17160 if (!hdr) { 17161 nlmsg_free(msg); 17162 return; 17163 } 17164 17165 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 17166 goto nla_put_failure; 17167 17168 /* NOP and radar events don't need a netdev parameter */ 17169 if (netdev) { 17170 struct wireless_dev *wdev = netdev->ieee80211_ptr; 17171 17172 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 17173 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 17174 NL80211_ATTR_PAD)) 17175 goto nla_put_failure; 17176 } 17177 17178 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 17179 goto nla_put_failure; 17180 17181 if (nl80211_send_chandef(msg, chandef)) 17182 goto nla_put_failure; 17183 17184 genlmsg_end(msg, hdr); 17185 17186 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17187 NL80211_MCGRP_MLME, gfp); 17188 return; 17189 17190 nla_put_failure: 17191 nlmsg_free(msg); 17192 } 17193 17194 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, 17195 struct sta_opmode_info *sta_opmode, 17196 gfp_t gfp) 17197 { 17198 struct sk_buff *msg; 17199 struct wireless_dev *wdev = dev->ieee80211_ptr; 17200 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 17201 void *hdr; 17202 17203 if (WARN_ON(!mac)) 17204 return; 17205 17206 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17207 if (!msg) 17208 return; 17209 17210 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED); 17211 if (!hdr) { 17212 nlmsg_free(msg); 17213 return; 17214 } 17215 17216 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 17217 goto nla_put_failure; 17218 17219 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 17220 goto nla_put_failure; 17221 17222 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 17223 goto nla_put_failure; 17224 17225 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) && 17226 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode)) 17227 goto nla_put_failure; 17228 17229 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) && 17230 nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw)) 17231 goto nla_put_failure; 17232 17233 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) && 17234 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss)) 17235 goto nla_put_failure; 17236 17237 genlmsg_end(msg, hdr); 17238 17239 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17240 NL80211_MCGRP_MLME, gfp); 17241 17242 return; 17243 17244 nla_put_failure: 17245 nlmsg_free(msg); 17246 } 17247 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify); 17248 17249 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 17250 u64 cookie, bool acked, s32 ack_signal, 17251 bool is_valid_ack_signal, gfp_t gfp) 17252 { 17253 struct wireless_dev *wdev = dev->ieee80211_ptr; 17254 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 17255 struct sk_buff *msg; 17256 void *hdr; 17257 17258 trace_cfg80211_probe_status(dev, addr, cookie, acked); 17259 17260 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17261 17262 if (!msg) 17263 return; 17264 17265 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 17266 if (!hdr) { 17267 nlmsg_free(msg); 17268 return; 17269 } 17270 17271 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17272 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 17273 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 17274 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 17275 NL80211_ATTR_PAD) || 17276 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) || 17277 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL, 17278 ack_signal))) 17279 goto nla_put_failure; 17280 17281 genlmsg_end(msg, hdr); 17282 17283 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17284 NL80211_MCGRP_MLME, gfp); 17285 return; 17286 17287 nla_put_failure: 17288 nlmsg_free(msg); 17289 } 17290 EXPORT_SYMBOL(cfg80211_probe_status); 17291 17292 void cfg80211_report_obss_beacon_khz(struct wiphy *wiphy, const u8 *frame, 17293 size_t len, int freq, int sig_dbm) 17294 { 17295 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17296 struct sk_buff *msg; 17297 void *hdr; 17298 struct cfg80211_beacon_registration *reg; 17299 17300 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 17301 17302 spin_lock_bh(&rdev->beacon_registrations_lock); 17303 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 17304 msg = nlmsg_new(len + 100, GFP_ATOMIC); 17305 if (!msg) { 17306 spin_unlock_bh(&rdev->beacon_registrations_lock); 17307 return; 17308 } 17309 17310 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 17311 if (!hdr) 17312 goto nla_put_failure; 17313 17314 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17315 (freq && 17316 (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 17317 KHZ_TO_MHZ(freq)) || 17318 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ_OFFSET, 17319 freq % 1000))) || 17320 (sig_dbm && 17321 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 17322 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 17323 goto nla_put_failure; 17324 17325 genlmsg_end(msg, hdr); 17326 17327 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 17328 } 17329 spin_unlock_bh(&rdev->beacon_registrations_lock); 17330 return; 17331 17332 nla_put_failure: 17333 spin_unlock_bh(&rdev->beacon_registrations_lock); 17334 nlmsg_free(msg); 17335 } 17336 EXPORT_SYMBOL(cfg80211_report_obss_beacon_khz); 17337 17338 #ifdef CONFIG_PM 17339 static int cfg80211_net_detect_results(struct sk_buff *msg, 17340 struct cfg80211_wowlan_wakeup *wakeup) 17341 { 17342 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 17343 struct nlattr *nl_results, *nl_match, *nl_freqs; 17344 int i, j; 17345 17346 nl_results = nla_nest_start_noflag(msg, 17347 NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 17348 if (!nl_results) 17349 return -EMSGSIZE; 17350 17351 for (i = 0; i < nd->n_matches; i++) { 17352 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 17353 17354 nl_match = nla_nest_start_noflag(msg, i); 17355 if (!nl_match) 17356 break; 17357 17358 /* The SSID attribute is optional in nl80211, but for 17359 * simplicity reasons it's always present in the 17360 * cfg80211 structure. If a driver can't pass the 17361 * SSID, that needs to be changed. A zero length SSID 17362 * is still a valid SSID (wildcard), so it cannot be 17363 * used for this purpose. 17364 */ 17365 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 17366 match->ssid.ssid)) { 17367 nla_nest_cancel(msg, nl_match); 17368 goto out; 17369 } 17370 17371 if (match->n_channels) { 17372 nl_freqs = nla_nest_start_noflag(msg, 17373 NL80211_ATTR_SCAN_FREQUENCIES); 17374 if (!nl_freqs) { 17375 nla_nest_cancel(msg, nl_match); 17376 goto out; 17377 } 17378 17379 for (j = 0; j < match->n_channels; j++) { 17380 if (nla_put_u32(msg, j, match->channels[j])) { 17381 nla_nest_cancel(msg, nl_freqs); 17382 nla_nest_cancel(msg, nl_match); 17383 goto out; 17384 } 17385 } 17386 17387 nla_nest_end(msg, nl_freqs); 17388 } 17389 17390 nla_nest_end(msg, nl_match); 17391 } 17392 17393 out: 17394 nla_nest_end(msg, nl_results); 17395 return 0; 17396 } 17397 17398 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 17399 struct cfg80211_wowlan_wakeup *wakeup, 17400 gfp_t gfp) 17401 { 17402 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 17403 struct sk_buff *msg; 17404 void *hdr; 17405 int size = 200; 17406 17407 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 17408 17409 if (wakeup) 17410 size += wakeup->packet_present_len; 17411 17412 msg = nlmsg_new(size, gfp); 17413 if (!msg) 17414 return; 17415 17416 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 17417 if (!hdr) 17418 goto free_msg; 17419 17420 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17421 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 17422 NL80211_ATTR_PAD)) 17423 goto free_msg; 17424 17425 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 17426 wdev->netdev->ifindex)) 17427 goto free_msg; 17428 17429 if (wakeup) { 17430 struct nlattr *reasons; 17431 17432 reasons = nla_nest_start_noflag(msg, 17433 NL80211_ATTR_WOWLAN_TRIGGERS); 17434 if (!reasons) 17435 goto free_msg; 17436 17437 if (wakeup->disconnect && 17438 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 17439 goto free_msg; 17440 if (wakeup->magic_pkt && 17441 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 17442 goto free_msg; 17443 if (wakeup->gtk_rekey_failure && 17444 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 17445 goto free_msg; 17446 if (wakeup->eap_identity_req && 17447 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 17448 goto free_msg; 17449 if (wakeup->four_way_handshake && 17450 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 17451 goto free_msg; 17452 if (wakeup->rfkill_release && 17453 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 17454 goto free_msg; 17455 17456 if (wakeup->pattern_idx >= 0 && 17457 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 17458 wakeup->pattern_idx)) 17459 goto free_msg; 17460 17461 if (wakeup->tcp_match && 17462 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 17463 goto free_msg; 17464 17465 if (wakeup->tcp_connlost && 17466 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 17467 goto free_msg; 17468 17469 if (wakeup->tcp_nomoretokens && 17470 nla_put_flag(msg, 17471 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 17472 goto free_msg; 17473 17474 if (wakeup->packet) { 17475 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 17476 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 17477 17478 if (!wakeup->packet_80211) { 17479 pkt_attr = 17480 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 17481 len_attr = 17482 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 17483 } 17484 17485 if (wakeup->packet_len && 17486 nla_put_u32(msg, len_attr, wakeup->packet_len)) 17487 goto free_msg; 17488 17489 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 17490 wakeup->packet)) 17491 goto free_msg; 17492 } 17493 17494 if (wakeup->net_detect && 17495 cfg80211_net_detect_results(msg, wakeup)) 17496 goto free_msg; 17497 17498 nla_nest_end(msg, reasons); 17499 } 17500 17501 genlmsg_end(msg, hdr); 17502 17503 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17504 NL80211_MCGRP_MLME, gfp); 17505 return; 17506 17507 free_msg: 17508 nlmsg_free(msg); 17509 } 17510 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 17511 #endif 17512 17513 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 17514 enum nl80211_tdls_operation oper, 17515 u16 reason_code, gfp_t gfp) 17516 { 17517 struct wireless_dev *wdev = dev->ieee80211_ptr; 17518 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 17519 struct sk_buff *msg; 17520 void *hdr; 17521 17522 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 17523 reason_code); 17524 17525 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17526 if (!msg) 17527 return; 17528 17529 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 17530 if (!hdr) { 17531 nlmsg_free(msg); 17532 return; 17533 } 17534 17535 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17536 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 17537 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 17538 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 17539 (reason_code > 0 && 17540 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 17541 goto nla_put_failure; 17542 17543 genlmsg_end(msg, hdr); 17544 17545 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17546 NL80211_MCGRP_MLME, gfp); 17547 return; 17548 17549 nla_put_failure: 17550 nlmsg_free(msg); 17551 } 17552 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 17553 17554 static int nl80211_netlink_notify(struct notifier_block * nb, 17555 unsigned long state, 17556 void *_notify) 17557 { 17558 struct netlink_notify *notify = _notify; 17559 struct cfg80211_registered_device *rdev; 17560 struct wireless_dev *wdev; 17561 struct cfg80211_beacon_registration *reg, *tmp; 17562 17563 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 17564 return NOTIFY_DONE; 17565 17566 rcu_read_lock(); 17567 17568 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 17569 struct cfg80211_sched_scan_request *sched_scan_req; 17570 17571 list_for_each_entry_rcu(sched_scan_req, 17572 &rdev->sched_scan_req_list, 17573 list) { 17574 if (sched_scan_req->owner_nlportid == notify->portid) { 17575 sched_scan_req->nl_owner_dead = true; 17576 schedule_work(&rdev->sched_scan_stop_wk); 17577 } 17578 } 17579 17580 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 17581 cfg80211_mlme_unregister_socket(wdev, notify->portid); 17582 17583 if (wdev->owner_nlportid == notify->portid) { 17584 wdev->nl_owner_dead = true; 17585 schedule_work(&rdev->destroy_work); 17586 } else if (wdev->conn_owner_nlportid == notify->portid) { 17587 schedule_work(&wdev->disconnect_wk); 17588 } 17589 17590 cfg80211_release_pmsr(wdev, notify->portid); 17591 } 17592 17593 spin_lock_bh(&rdev->beacon_registrations_lock); 17594 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 17595 list) { 17596 if (reg->nlportid == notify->portid) { 17597 list_del(®->list); 17598 kfree(reg); 17599 break; 17600 } 17601 } 17602 spin_unlock_bh(&rdev->beacon_registrations_lock); 17603 } 17604 17605 rcu_read_unlock(); 17606 17607 /* 17608 * It is possible that the user space process that is controlling the 17609 * indoor setting disappeared, so notify the regulatory core. 17610 */ 17611 regulatory_netlink_notify(notify->portid); 17612 return NOTIFY_OK; 17613 } 17614 17615 static struct notifier_block nl80211_netlink_notifier = { 17616 .notifier_call = nl80211_netlink_notify, 17617 }; 17618 17619 void cfg80211_ft_event(struct net_device *netdev, 17620 struct cfg80211_ft_event_params *ft_event) 17621 { 17622 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 17623 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17624 struct sk_buff *msg; 17625 void *hdr; 17626 17627 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 17628 17629 if (!ft_event->target_ap) 17630 return; 17631 17632 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len, 17633 GFP_KERNEL); 17634 if (!msg) 17635 return; 17636 17637 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 17638 if (!hdr) 17639 goto out; 17640 17641 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17642 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 17643 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 17644 goto out; 17645 17646 if (ft_event->ies && 17647 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 17648 goto out; 17649 if (ft_event->ric_ies && 17650 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 17651 ft_event->ric_ies)) 17652 goto out; 17653 17654 genlmsg_end(msg, hdr); 17655 17656 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17657 NL80211_MCGRP_MLME, GFP_KERNEL); 17658 return; 17659 out: 17660 nlmsg_free(msg); 17661 } 17662 EXPORT_SYMBOL(cfg80211_ft_event); 17663 17664 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 17665 { 17666 struct cfg80211_registered_device *rdev; 17667 struct sk_buff *msg; 17668 void *hdr; 17669 u32 nlportid; 17670 17671 rdev = wiphy_to_rdev(wdev->wiphy); 17672 if (!rdev->crit_proto_nlportid) 17673 return; 17674 17675 nlportid = rdev->crit_proto_nlportid; 17676 rdev->crit_proto_nlportid = 0; 17677 17678 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17679 if (!msg) 17680 return; 17681 17682 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 17683 if (!hdr) 17684 goto nla_put_failure; 17685 17686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17687 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 17688 NL80211_ATTR_PAD)) 17689 goto nla_put_failure; 17690 17691 genlmsg_end(msg, hdr); 17692 17693 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 17694 return; 17695 17696 nla_put_failure: 17697 nlmsg_free(msg); 17698 } 17699 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 17700 17701 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 17702 { 17703 struct wiphy *wiphy = wdev->wiphy; 17704 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17705 struct sk_buff *msg; 17706 void *hdr; 17707 17708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 17709 if (!msg) 17710 return; 17711 17712 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 17713 if (!hdr) 17714 goto out; 17715 17716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17717 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 17718 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 17719 NL80211_ATTR_PAD)) 17720 goto out; 17721 17722 genlmsg_end(msg, hdr); 17723 17724 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 17725 NL80211_MCGRP_MLME, GFP_KERNEL); 17726 return; 17727 out: 17728 nlmsg_free(msg); 17729 } 17730 17731 int cfg80211_external_auth_request(struct net_device *dev, 17732 struct cfg80211_external_auth_params *params, 17733 gfp_t gfp) 17734 { 17735 struct wireless_dev *wdev = dev->ieee80211_ptr; 17736 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 17737 struct sk_buff *msg; 17738 void *hdr; 17739 17740 if (!wdev->conn_owner_nlportid) 17741 return -EINVAL; 17742 17743 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17744 if (!msg) 17745 return -ENOMEM; 17746 17747 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH); 17748 if (!hdr) 17749 goto nla_put_failure; 17750 17751 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17752 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 17753 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) || 17754 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION, 17755 params->action) || 17756 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) || 17757 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len, 17758 params->ssid.ssid)) 17759 goto nla_put_failure; 17760 17761 genlmsg_end(msg, hdr); 17762 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 17763 wdev->conn_owner_nlportid); 17764 return 0; 17765 17766 nla_put_failure: 17767 nlmsg_free(msg); 17768 return -ENOBUFS; 17769 } 17770 EXPORT_SYMBOL(cfg80211_external_auth_request); 17771 17772 void cfg80211_update_owe_info_event(struct net_device *netdev, 17773 struct cfg80211_update_owe_info *owe_info, 17774 gfp_t gfp) 17775 { 17776 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 17777 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 17778 struct sk_buff *msg; 17779 void *hdr; 17780 17781 trace_cfg80211_update_owe_info_event(wiphy, netdev, owe_info); 17782 17783 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 17784 if (!msg) 17785 return; 17786 17787 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_UPDATE_OWE_INFO); 17788 if (!hdr) 17789 goto nla_put_failure; 17790 17791 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 17792 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 17793 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, owe_info->peer)) 17794 goto nla_put_failure; 17795 17796 if (!owe_info->ie_len || 17797 nla_put(msg, NL80211_ATTR_IE, owe_info->ie_len, owe_info->ie)) 17798 goto nla_put_failure; 17799 17800 genlmsg_end(msg, hdr); 17801 17802 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 17803 NL80211_MCGRP_MLME, gfp); 17804 return; 17805 17806 nla_put_failure: 17807 genlmsg_cancel(msg, hdr); 17808 nlmsg_free(msg); 17809 } 17810 EXPORT_SYMBOL(cfg80211_update_owe_info_event); 17811 17812 /* initialisation/exit functions */ 17813 17814 int __init nl80211_init(void) 17815 { 17816 int err; 17817 17818 err = genl_register_family(&nl80211_fam); 17819 if (err) 17820 return err; 17821 17822 err = netlink_register_notifier(&nl80211_netlink_notifier); 17823 if (err) 17824 goto err_out; 17825 17826 return 0; 17827 err_out: 17828 genl_unregister_family(&nl80211_fam); 17829 return err; 17830 } 17831 17832 void nl80211_exit(void) 17833 { 17834 netlink_unregister_notifier(&nl80211_netlink_notifier); 17835 genl_unregister_family(&nl80211_fam); 17836 } 17837