1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 * Copyright 2015-2017 Intel Deutschland GmbH 7 * Copyright (C) 2018 Intel Corporation 8 */ 9 10 #include <linux/if.h> 11 #include <linux/module.h> 12 #include <linux/err.h> 13 #include <linux/slab.h> 14 #include <linux/list.h> 15 #include <linux/if_ether.h> 16 #include <linux/ieee80211.h> 17 #include <linux/nl80211.h> 18 #include <linux/rtnetlink.h> 19 #include <linux/netlink.h> 20 #include <linux/nospec.h> 21 #include <linux/etherdevice.h> 22 #include <net/net_namespace.h> 23 #include <net/genetlink.h> 24 #include <net/cfg80211.h> 25 #include <net/sock.h> 26 #include <net/inet_connection_sock.h> 27 #include "core.h" 28 #include "nl80211.h" 29 #include "reg.h" 30 #include "rdev-ops.h" 31 32 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 33 struct genl_info *info, 34 struct cfg80211_crypto_settings *settings, 35 int cipher_limit); 36 37 /* the netlink family */ 38 static struct genl_family nl80211_fam; 39 40 /* multicast groups */ 41 enum nl80211_multicast_groups { 42 NL80211_MCGRP_CONFIG, 43 NL80211_MCGRP_SCAN, 44 NL80211_MCGRP_REGULATORY, 45 NL80211_MCGRP_MLME, 46 NL80211_MCGRP_VENDOR, 47 NL80211_MCGRP_NAN, 48 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 49 }; 50 51 static const struct genl_multicast_group nl80211_mcgrps[] = { 52 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 53 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 54 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 55 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 56 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 57 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, 58 #ifdef CONFIG_NL80211_TESTMODE 59 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 60 #endif 61 }; 62 63 /* returns ERR_PTR values */ 64 static struct wireless_dev * 65 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 66 { 67 struct cfg80211_registered_device *rdev; 68 struct wireless_dev *result = NULL; 69 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 70 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 71 u64 wdev_id; 72 int wiphy_idx = -1; 73 int ifidx = -1; 74 75 ASSERT_RTNL(); 76 77 if (!have_ifidx && !have_wdev_id) 78 return ERR_PTR(-EINVAL); 79 80 if (have_ifidx) 81 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 82 if (have_wdev_id) { 83 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 84 wiphy_idx = wdev_id >> 32; 85 } 86 87 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 88 struct wireless_dev *wdev; 89 90 if (wiphy_net(&rdev->wiphy) != netns) 91 continue; 92 93 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 94 continue; 95 96 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 97 if (have_ifidx && wdev->netdev && 98 wdev->netdev->ifindex == ifidx) { 99 result = wdev; 100 break; 101 } 102 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 103 result = wdev; 104 break; 105 } 106 } 107 108 if (result) 109 break; 110 } 111 112 if (result) 113 return result; 114 return ERR_PTR(-ENODEV); 115 } 116 117 static struct cfg80211_registered_device * 118 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 119 { 120 struct cfg80211_registered_device *rdev = NULL, *tmp; 121 struct net_device *netdev; 122 123 ASSERT_RTNL(); 124 125 if (!attrs[NL80211_ATTR_WIPHY] && 126 !attrs[NL80211_ATTR_IFINDEX] && 127 !attrs[NL80211_ATTR_WDEV]) 128 return ERR_PTR(-EINVAL); 129 130 if (attrs[NL80211_ATTR_WIPHY]) 131 rdev = cfg80211_rdev_by_wiphy_idx( 132 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 133 134 if (attrs[NL80211_ATTR_WDEV]) { 135 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 136 struct wireless_dev *wdev; 137 bool found = false; 138 139 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 140 if (tmp) { 141 /* make sure wdev exists */ 142 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 143 if (wdev->identifier != (u32)wdev_id) 144 continue; 145 found = true; 146 break; 147 } 148 149 if (!found) 150 tmp = NULL; 151 152 if (rdev && tmp != rdev) 153 return ERR_PTR(-EINVAL); 154 rdev = tmp; 155 } 156 } 157 158 if (attrs[NL80211_ATTR_IFINDEX]) { 159 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 160 161 netdev = __dev_get_by_index(netns, ifindex); 162 if (netdev) { 163 if (netdev->ieee80211_ptr) 164 tmp = wiphy_to_rdev( 165 netdev->ieee80211_ptr->wiphy); 166 else 167 tmp = NULL; 168 169 /* not wireless device -- return error */ 170 if (!tmp) 171 return ERR_PTR(-EINVAL); 172 173 /* mismatch -- return error */ 174 if (rdev && tmp != rdev) 175 return ERR_PTR(-EINVAL); 176 177 rdev = tmp; 178 } 179 } 180 181 if (!rdev) 182 return ERR_PTR(-ENODEV); 183 184 if (netns != wiphy_net(&rdev->wiphy)) 185 return ERR_PTR(-ENODEV); 186 187 return rdev; 188 } 189 190 /* 191 * This function returns a pointer to the driver 192 * that the genl_info item that is passed refers to. 193 * 194 * The result of this can be a PTR_ERR and hence must 195 * be checked with IS_ERR() for errors. 196 */ 197 static struct cfg80211_registered_device * 198 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 199 { 200 return __cfg80211_rdev_from_attrs(netns, info->attrs); 201 } 202 203 static int validate_ie_attr(const struct nlattr *attr, 204 struct netlink_ext_ack *extack) 205 { 206 const u8 *pos; 207 int len; 208 209 pos = nla_data(attr); 210 len = nla_len(attr); 211 212 while (len) { 213 u8 elemlen; 214 215 if (len < 2) 216 goto error; 217 len -= 2; 218 219 elemlen = pos[1]; 220 if (elemlen > len) 221 goto error; 222 223 len -= elemlen; 224 pos += 2 + elemlen; 225 } 226 227 return 0; 228 error: 229 NL_SET_ERR_MSG_ATTR(extack, attr, "malformed information elements"); 230 return -EINVAL; 231 } 232 233 /* policy for the attributes */ 234 static const struct nla_policy 235 nl80211_ftm_responder_policy[NL80211_FTM_RESP_ATTR_MAX + 1] = { 236 [NL80211_FTM_RESP_ATTR_ENABLED] = { .type = NLA_FLAG, }, 237 [NL80211_FTM_RESP_ATTR_LCI] = { .type = NLA_BINARY, 238 .len = U8_MAX }, 239 [NL80211_FTM_RESP_ATTR_CIVICLOC] = { .type = NLA_BINARY, 240 .len = U8_MAX }, 241 }; 242 243 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 244 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 245 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 246 .len = 20-1 }, 247 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 248 249 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 250 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 251 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 252 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 253 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 254 255 [NL80211_ATTR_WIPHY_RETRY_SHORT] = NLA_POLICY_MIN(NLA_U8, 1), 256 [NL80211_ATTR_WIPHY_RETRY_LONG] = NLA_POLICY_MIN(NLA_U8, 1), 257 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 258 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 259 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 260 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 261 262 [NL80211_ATTR_IFTYPE] = NLA_POLICY_MAX(NLA_U32, NL80211_IFTYPE_MAX), 263 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 264 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 265 266 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 267 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 268 269 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 270 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 271 .len = WLAN_MAX_KEY_LEN }, 272 [NL80211_ATTR_KEY_IDX] = NLA_POLICY_MAX(NLA_U8, 5), 273 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 274 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 275 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 276 [NL80211_ATTR_KEY_TYPE] = 277 NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES), 278 279 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 280 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 281 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 282 .len = IEEE80211_MAX_DATA_LEN }, 283 [NL80211_ATTR_BEACON_TAIL] = 284 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 285 IEEE80211_MAX_DATA_LEN), 286 [NL80211_ATTR_STA_AID] = 287 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 288 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 289 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 290 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 291 .len = NL80211_MAX_SUPP_RATES }, 292 [NL80211_ATTR_STA_PLINK_ACTION] = 293 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_ACTIONS - 1), 294 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 295 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 296 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 297 .len = IEEE80211_MAX_MESH_ID_LEN }, 298 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 299 300 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 301 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 302 303 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 304 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 305 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 306 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 307 .len = NL80211_MAX_SUPP_RATES }, 308 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 309 310 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 311 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 312 313 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 314 315 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 316 [NL80211_ATTR_IE] = NLA_POLICY_VALIDATE_FN(NLA_BINARY, 317 validate_ie_attr, 318 IEEE80211_MAX_DATA_LEN), 319 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 320 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 321 322 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 323 .len = IEEE80211_MAX_SSID_LEN }, 324 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 325 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 326 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 327 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 328 [NL80211_ATTR_USE_MFP] = NLA_POLICY_RANGE(NLA_U32, 329 NL80211_MFP_NO, 330 NL80211_MFP_OPTIONAL), 331 [NL80211_ATTR_STA_FLAGS2] = { 332 .len = sizeof(struct nl80211_sta_flag_update), 333 }, 334 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 336 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG }, 338 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 339 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 340 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 341 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 342 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 343 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN }, 344 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 345 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 346 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 347 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 348 .len = IEEE80211_MAX_DATA_LEN }, 349 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 350 [NL80211_ATTR_PS_STATE] = NLA_POLICY_RANGE(NLA_U32, 351 NL80211_PS_DISABLED, 352 NL80211_PS_ENABLED), 353 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 354 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 355 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 356 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 357 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 358 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 359 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 360 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 361 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 362 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 363 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 364 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 365 [NL80211_ATTR_STA_PLINK_STATE] = 366 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_PLINK_STATES - 1), 367 [NL80211_ATTR_MESH_PEER_AID] = 368 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 369 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 370 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 371 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 372 [NL80211_ATTR_HIDDEN_SSID] = 373 NLA_POLICY_RANGE(NLA_U32, 374 NL80211_HIDDEN_SSID_NOT_IN_USE, 375 NL80211_HIDDEN_SSID_ZERO_CONTENTS), 376 [NL80211_ATTR_IE_PROBE_RESP] = 377 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 378 IEEE80211_MAX_DATA_LEN), 379 [NL80211_ATTR_IE_ASSOC_RESP] = 380 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 381 IEEE80211_MAX_DATA_LEN), 382 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 383 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 384 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 385 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 386 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 387 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 388 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 389 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 390 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 391 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 392 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 393 .len = IEEE80211_MAX_DATA_LEN }, 394 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 395 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 396 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 397 .len = NL80211_HT_CAPABILITY_LEN 398 }, 399 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 400 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 401 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 402 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 403 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 404 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, }, 405 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 406 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 407 [NL80211_ATTR_P2P_CTWINDOW] = NLA_POLICY_MAX(NLA_U8, 127), 408 [NL80211_ATTR_P2P_OPPPS] = NLA_POLICY_MAX(NLA_U8, 1), 409 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = 410 NLA_POLICY_RANGE(NLA_U32, 411 NL80211_MESH_POWER_UNKNOWN + 1, 412 NL80211_MESH_POWER_MAX), 413 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 414 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 415 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 416 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 417 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 418 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 419 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 420 .len = NL80211_VHT_CAPABILITY_LEN, 421 }, 422 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 423 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 424 .len = IEEE80211_MAX_DATA_LEN }, 425 [NL80211_ATTR_PEER_AID] = 426 NLA_POLICY_RANGE(NLA_U16, 1, IEEE80211_MAX_AID), 427 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 428 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 429 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 430 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 431 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 432 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 433 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 434 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 435 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 436 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 437 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 438 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 439 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 440 .len = IEEE80211_QOS_MAP_LEN_MAX }, 441 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 442 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 443 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 444 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 445 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 446 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 447 [NL80211_ATTR_TSID] = NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_TIDS - 1), 448 [NL80211_ATTR_USER_PRIO] = 449 NLA_POLICY_MAX(NLA_U8, IEEE80211_NUM_UPS - 1), 450 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 451 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 452 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 453 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 454 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 455 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 456 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 457 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 458 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 459 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = 460 NLA_POLICY_MAX(NLA_U8, NUM_NL80211_P2P_PS_STATUS - 1), 461 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 462 .len = VHT_MUMIMO_GROUPS_DATA_LEN 463 }, 464 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN }, 465 [NL80211_ATTR_NAN_MASTER_PREF] = NLA_POLICY_MIN(NLA_U8, 1), 466 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 467 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 468 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 469 .len = FILS_MAX_KEK_LEN }, 470 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN }, 471 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 472 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN }, 473 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 474 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 475 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 476 }, 477 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 478 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 479 .len = FILS_ERP_MAX_USERNAME_LEN }, 480 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 481 .len = FILS_ERP_MAX_REALM_LEN }, 482 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 483 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 484 .len = FILS_ERP_MAX_RRK_LEN }, 485 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 }, 486 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 487 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 488 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG }, 489 490 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 }, 491 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 }, 492 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 }, 493 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY, 494 .len = NL80211_HE_MAX_CAPABILITY_LEN }, 495 496 [NL80211_ATTR_FTM_RESPONDER] = { 497 .type = NLA_NESTED, 498 .validation_data = nl80211_ftm_responder_policy, 499 }, 500 }; 501 502 /* policy for the key attributes */ 503 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 504 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 505 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 506 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 507 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 508 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 509 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 510 [NL80211_KEY_TYPE] = NLA_POLICY_MAX(NLA_U32, NUM_NL80211_KEYTYPES - 1), 511 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 512 }; 513 514 /* policy for the key default flags */ 515 static const struct nla_policy 516 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 517 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 518 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 519 }; 520 521 #ifdef CONFIG_PM 522 /* policy for WoWLAN attributes */ 523 static const struct nla_policy 524 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 525 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 526 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 527 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 528 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 529 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 530 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 531 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 532 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 533 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 534 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 535 }; 536 537 static const struct nla_policy 538 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 539 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 540 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 541 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 542 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 543 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 544 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 545 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 546 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 547 }, 548 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 549 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 550 }, 551 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 552 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 553 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 554 }; 555 #endif /* CONFIG_PM */ 556 557 /* policy for coalesce rule attributes */ 558 static const struct nla_policy 559 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 560 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 561 [NL80211_ATTR_COALESCE_RULE_CONDITION] = 562 NLA_POLICY_RANGE(NLA_U32, 563 NL80211_COALESCE_CONDITION_MATCH, 564 NL80211_COALESCE_CONDITION_NO_MATCH), 565 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 566 }; 567 568 /* policy for GTK rekey offload attributes */ 569 static const struct nla_policy 570 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 571 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 572 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 573 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 574 }; 575 576 static const struct nla_policy 577 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 578 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 579 .len = IEEE80211_MAX_SSID_LEN }, 580 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN }, 581 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 582 }; 583 584 static const struct nla_policy 585 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 586 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 587 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 588 }; 589 590 static const struct nla_policy 591 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 592 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 593 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 594 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 595 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 596 }, 597 }; 598 599 /* policy for NAN function attributes */ 600 static const struct nla_policy 601 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 602 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 }, 603 [NL80211_NAN_FUNC_SERVICE_ID] = { 604 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 605 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 606 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 607 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 608 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 609 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 610 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN }, 611 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 612 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 613 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 614 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 615 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 616 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 617 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 618 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 619 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 620 }; 621 622 /* policy for Service Response Filter attributes */ 623 static const struct nla_policy 624 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 625 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 626 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 627 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 628 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 629 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 630 }; 631 632 /* policy for packet pattern attributes */ 633 static const struct nla_policy 634 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 635 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 636 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 637 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 638 }; 639 640 static int nl80211_prepare_wdev_dump(struct netlink_callback *cb, 641 struct cfg80211_registered_device **rdev, 642 struct wireless_dev **wdev) 643 { 644 int err; 645 646 if (!cb->args[0]) { 647 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 648 genl_family_attrbuf(&nl80211_fam), 649 nl80211_fam.maxattr, nl80211_policy, NULL); 650 if (err) 651 return err; 652 653 *wdev = __cfg80211_wdev_from_attrs( 654 sock_net(cb->skb->sk), 655 genl_family_attrbuf(&nl80211_fam)); 656 if (IS_ERR(*wdev)) 657 return PTR_ERR(*wdev); 658 *rdev = wiphy_to_rdev((*wdev)->wiphy); 659 /* 0 is the first index - add 1 to parse only once */ 660 cb->args[0] = (*rdev)->wiphy_idx + 1; 661 cb->args[1] = (*wdev)->identifier; 662 } else { 663 /* subtract the 1 again here */ 664 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 665 struct wireless_dev *tmp; 666 667 if (!wiphy) 668 return -ENODEV; 669 *rdev = wiphy_to_rdev(wiphy); 670 *wdev = NULL; 671 672 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 673 if (tmp->identifier == cb->args[1]) { 674 *wdev = tmp; 675 break; 676 } 677 } 678 679 if (!*wdev) 680 return -ENODEV; 681 } 682 683 return 0; 684 } 685 686 /* message building helper */ 687 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 688 int flags, u8 cmd) 689 { 690 /* since there is no private header just add the generic one */ 691 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 692 } 693 694 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, 695 const struct ieee80211_reg_rule *rule) 696 { 697 int j; 698 struct nlattr *nl_wmm_rules = 699 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM); 700 701 if (!nl_wmm_rules) 702 goto nla_put_failure; 703 704 for (j = 0; j < IEEE80211_NUM_ACS; j++) { 705 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j); 706 707 if (!nl_wmm_rule) 708 goto nla_put_failure; 709 710 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN, 711 rule->wmm_rule.client[j].cw_min) || 712 nla_put_u16(msg, NL80211_WMMR_CW_MAX, 713 rule->wmm_rule.client[j].cw_max) || 714 nla_put_u8(msg, NL80211_WMMR_AIFSN, 715 rule->wmm_rule.client[j].aifsn) || 716 nla_put_u16(msg, NL80211_WMMR_TXOP, 717 rule->wmm_rule.client[j].cot)) 718 goto nla_put_failure; 719 720 nla_nest_end(msg, nl_wmm_rule); 721 } 722 nla_nest_end(msg, nl_wmm_rules); 723 724 return 0; 725 726 nla_put_failure: 727 return -ENOBUFS; 728 } 729 730 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, 731 struct ieee80211_channel *chan, 732 bool large) 733 { 734 /* Some channels must be completely excluded from the 735 * list to protect old user-space tools from breaking 736 */ 737 if (!large && chan->flags & 738 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 739 return 0; 740 741 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 742 chan->center_freq)) 743 goto nla_put_failure; 744 745 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 746 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 747 goto nla_put_failure; 748 if (chan->flags & IEEE80211_CHAN_NO_IR) { 749 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 750 goto nla_put_failure; 751 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 752 goto nla_put_failure; 753 } 754 if (chan->flags & IEEE80211_CHAN_RADAR) { 755 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 756 goto nla_put_failure; 757 if (large) { 758 u32 time; 759 760 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 761 762 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 763 chan->dfs_state)) 764 goto nla_put_failure; 765 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 766 time)) 767 goto nla_put_failure; 768 if (nla_put_u32(msg, 769 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 770 chan->dfs_cac_ms)) 771 goto nla_put_failure; 772 } 773 } 774 775 if (large) { 776 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 777 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 778 goto nla_put_failure; 779 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 780 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 781 goto nla_put_failure; 782 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 783 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 784 goto nla_put_failure; 785 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 786 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 787 goto nla_put_failure; 788 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 789 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 790 goto nla_put_failure; 791 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 792 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 793 goto nla_put_failure; 794 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 795 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 796 goto nla_put_failure; 797 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 798 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 799 goto nla_put_failure; 800 } 801 802 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 803 DBM_TO_MBM(chan->max_power))) 804 goto nla_put_failure; 805 806 if (large) { 807 const struct ieee80211_reg_rule *rule = 808 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); 809 810 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) { 811 if (nl80211_msg_put_wmm_rules(msg, rule)) 812 goto nla_put_failure; 813 } 814 } 815 816 return 0; 817 818 nla_put_failure: 819 return -ENOBUFS; 820 } 821 822 static bool nl80211_put_txq_stats(struct sk_buff *msg, 823 struct cfg80211_txq_stats *txqstats, 824 int attrtype) 825 { 826 struct nlattr *txqattr; 827 828 #define PUT_TXQVAL_U32(attr, memb) do { \ 829 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \ 830 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \ 831 return false; \ 832 } while (0) 833 834 txqattr = nla_nest_start(msg, attrtype); 835 if (!txqattr) 836 return false; 837 838 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes); 839 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets); 840 PUT_TXQVAL_U32(FLOWS, flows); 841 PUT_TXQVAL_U32(DROPS, drops); 842 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks); 843 PUT_TXQVAL_U32(OVERLIMIT, overlimit); 844 PUT_TXQVAL_U32(OVERMEMORY, overmemory); 845 PUT_TXQVAL_U32(COLLISIONS, collisions); 846 PUT_TXQVAL_U32(TX_BYTES, tx_bytes); 847 PUT_TXQVAL_U32(TX_PACKETS, tx_packets); 848 PUT_TXQVAL_U32(MAX_FLOWS, max_flows); 849 nla_nest_end(msg, txqattr); 850 851 #undef PUT_TXQVAL_U32 852 return true; 853 } 854 855 /* netlink command implementations */ 856 857 struct key_parse { 858 struct key_params p; 859 int idx; 860 int type; 861 bool def, defmgmt; 862 bool def_uni, def_multi; 863 }; 864 865 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key, 866 struct key_parse *k) 867 { 868 struct nlattr *tb[NL80211_KEY_MAX + 1]; 869 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 870 nl80211_key_policy, info->extack); 871 if (err) 872 return err; 873 874 k->def = !!tb[NL80211_KEY_DEFAULT]; 875 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 876 877 if (k->def) { 878 k->def_uni = true; 879 k->def_multi = true; 880 } 881 if (k->defmgmt) 882 k->def_multi = true; 883 884 if (tb[NL80211_KEY_IDX]) 885 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 886 887 if (tb[NL80211_KEY_DATA]) { 888 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 889 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 890 } 891 892 if (tb[NL80211_KEY_SEQ]) { 893 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 894 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 895 } 896 897 if (tb[NL80211_KEY_CIPHER]) 898 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 899 900 if (tb[NL80211_KEY_TYPE]) 901 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 902 903 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 904 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 905 906 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 907 tb[NL80211_KEY_DEFAULT_TYPES], 908 nl80211_key_default_policy, 909 info->extack); 910 if (err) 911 return err; 912 913 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 914 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 915 } 916 917 return 0; 918 } 919 920 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 921 { 922 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 923 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 924 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 925 } 926 927 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 928 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 929 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 930 } 931 932 if (info->attrs[NL80211_ATTR_KEY_IDX]) 933 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 934 935 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 936 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 937 938 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 939 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 940 941 if (k->def) { 942 k->def_uni = true; 943 k->def_multi = true; 944 } 945 if (k->defmgmt) 946 k->def_multi = true; 947 948 if (info->attrs[NL80211_ATTR_KEY_TYPE]) 949 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 950 951 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 952 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 953 int err = nla_parse_nested(kdt, 954 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 955 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 956 nl80211_key_default_policy, 957 info->extack); 958 if (err) 959 return err; 960 961 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 962 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 963 } 964 965 return 0; 966 } 967 968 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 969 { 970 int err; 971 972 memset(k, 0, sizeof(*k)); 973 k->idx = -1; 974 k->type = -1; 975 976 if (info->attrs[NL80211_ATTR_KEY]) 977 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k); 978 else 979 err = nl80211_parse_key_old(info, k); 980 981 if (err) 982 return err; 983 984 if (k->def && k->defmgmt) { 985 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid"); 986 return -EINVAL; 987 } 988 989 if (k->defmgmt) { 990 if (k->def_uni || !k->def_multi) { 991 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast"); 992 return -EINVAL; 993 } 994 } 995 996 if (k->idx != -1) { 997 if (k->defmgmt) { 998 if (k->idx < 4 || k->idx > 5) { 999 GENL_SET_ERR_MSG(info, 1000 "defmgmt key idx not 4 or 5"); 1001 return -EINVAL; 1002 } 1003 } else if (k->def) { 1004 if (k->idx < 0 || k->idx > 3) { 1005 GENL_SET_ERR_MSG(info, "def key idx not 0-3"); 1006 return -EINVAL; 1007 } 1008 } else { 1009 if (k->idx < 0 || k->idx > 5) { 1010 GENL_SET_ERR_MSG(info, "key idx not 0-5"); 1011 return -EINVAL; 1012 } 1013 } 1014 } 1015 1016 return 0; 1017 } 1018 1019 static struct cfg80211_cached_keys * 1020 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 1021 struct genl_info *info, bool *no_ht) 1022 { 1023 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS]; 1024 struct key_parse parse; 1025 struct nlattr *key; 1026 struct cfg80211_cached_keys *result; 1027 int rem, err, def = 0; 1028 bool have_key = false; 1029 1030 nla_for_each_nested(key, keys, rem) { 1031 have_key = true; 1032 break; 1033 } 1034 1035 if (!have_key) 1036 return NULL; 1037 1038 result = kzalloc(sizeof(*result), GFP_KERNEL); 1039 if (!result) 1040 return ERR_PTR(-ENOMEM); 1041 1042 result->def = -1; 1043 1044 nla_for_each_nested(key, keys, rem) { 1045 memset(&parse, 0, sizeof(parse)); 1046 parse.idx = -1; 1047 1048 err = nl80211_parse_key_new(info, key, &parse); 1049 if (err) 1050 goto error; 1051 err = -EINVAL; 1052 if (!parse.p.key) 1053 goto error; 1054 if (parse.idx < 0 || parse.idx > 3) { 1055 GENL_SET_ERR_MSG(info, "key index out of range [0-3]"); 1056 goto error; 1057 } 1058 if (parse.def) { 1059 if (def) { 1060 GENL_SET_ERR_MSG(info, 1061 "only one key can be default"); 1062 goto error; 1063 } 1064 def = 1; 1065 result->def = parse.idx; 1066 if (!parse.def_uni || !parse.def_multi) 1067 goto error; 1068 } else if (parse.defmgmt) 1069 goto error; 1070 err = cfg80211_validate_key_settings(rdev, &parse.p, 1071 parse.idx, false, NULL); 1072 if (err) 1073 goto error; 1074 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 1075 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 1076 GENL_SET_ERR_MSG(info, "connect key must be WEP"); 1077 err = -EINVAL; 1078 goto error; 1079 } 1080 result->params[parse.idx].cipher = parse.p.cipher; 1081 result->params[parse.idx].key_len = parse.p.key_len; 1082 result->params[parse.idx].key = result->data[parse.idx]; 1083 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 1084 1085 /* must be WEP key if we got here */ 1086 if (no_ht) 1087 *no_ht = true; 1088 } 1089 1090 if (result->def < 0) { 1091 err = -EINVAL; 1092 GENL_SET_ERR_MSG(info, "need a default/TX key"); 1093 goto error; 1094 } 1095 1096 return result; 1097 error: 1098 kfree(result); 1099 return ERR_PTR(err); 1100 } 1101 1102 static int nl80211_key_allowed(struct wireless_dev *wdev) 1103 { 1104 ASSERT_WDEV_LOCK(wdev); 1105 1106 switch (wdev->iftype) { 1107 case NL80211_IFTYPE_AP: 1108 case NL80211_IFTYPE_AP_VLAN: 1109 case NL80211_IFTYPE_P2P_GO: 1110 case NL80211_IFTYPE_MESH_POINT: 1111 break; 1112 case NL80211_IFTYPE_ADHOC: 1113 case NL80211_IFTYPE_STATION: 1114 case NL80211_IFTYPE_P2P_CLIENT: 1115 if (!wdev->current_bss) 1116 return -ENOLINK; 1117 break; 1118 case NL80211_IFTYPE_UNSPECIFIED: 1119 case NL80211_IFTYPE_OCB: 1120 case NL80211_IFTYPE_MONITOR: 1121 case NL80211_IFTYPE_NAN: 1122 case NL80211_IFTYPE_P2P_DEVICE: 1123 case NL80211_IFTYPE_WDS: 1124 case NUM_NL80211_IFTYPES: 1125 return -EINVAL; 1126 } 1127 1128 return 0; 1129 } 1130 1131 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 1132 struct nlattr *tb) 1133 { 1134 struct ieee80211_channel *chan; 1135 1136 if (tb == NULL) 1137 return NULL; 1138 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 1139 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 1140 return NULL; 1141 return chan; 1142 } 1143 1144 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1145 { 1146 struct nlattr *nl_modes = nla_nest_start(msg, attr); 1147 int i; 1148 1149 if (!nl_modes) 1150 goto nla_put_failure; 1151 1152 i = 0; 1153 while (ifmodes) { 1154 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1155 goto nla_put_failure; 1156 ifmodes >>= 1; 1157 i++; 1158 } 1159 1160 nla_nest_end(msg, nl_modes); 1161 return 0; 1162 1163 nla_put_failure: 1164 return -ENOBUFS; 1165 } 1166 1167 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1168 struct sk_buff *msg, 1169 bool large) 1170 { 1171 struct nlattr *nl_combis; 1172 int i, j; 1173 1174 nl_combis = nla_nest_start(msg, 1175 NL80211_ATTR_INTERFACE_COMBINATIONS); 1176 if (!nl_combis) 1177 goto nla_put_failure; 1178 1179 for (i = 0; i < wiphy->n_iface_combinations; i++) { 1180 const struct ieee80211_iface_combination *c; 1181 struct nlattr *nl_combi, *nl_limits; 1182 1183 c = &wiphy->iface_combinations[i]; 1184 1185 nl_combi = nla_nest_start(msg, i + 1); 1186 if (!nl_combi) 1187 goto nla_put_failure; 1188 1189 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 1190 if (!nl_limits) 1191 goto nla_put_failure; 1192 1193 for (j = 0; j < c->n_limits; j++) { 1194 struct nlattr *nl_limit; 1195 1196 nl_limit = nla_nest_start(msg, j + 1); 1197 if (!nl_limit) 1198 goto nla_put_failure; 1199 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 1200 c->limits[j].max)) 1201 goto nla_put_failure; 1202 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1203 c->limits[j].types)) 1204 goto nla_put_failure; 1205 nla_nest_end(msg, nl_limit); 1206 } 1207 1208 nla_nest_end(msg, nl_limits); 1209 1210 if (c->beacon_int_infra_match && 1211 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1212 goto nla_put_failure; 1213 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1214 c->num_different_channels) || 1215 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1216 c->max_interfaces)) 1217 goto nla_put_failure; 1218 if (large && 1219 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1220 c->radar_detect_widths) || 1221 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1222 c->radar_detect_regions))) 1223 goto nla_put_failure; 1224 if (c->beacon_int_min_gcd && 1225 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1226 c->beacon_int_min_gcd)) 1227 goto nla_put_failure; 1228 1229 nla_nest_end(msg, nl_combi); 1230 } 1231 1232 nla_nest_end(msg, nl_combis); 1233 1234 return 0; 1235 nla_put_failure: 1236 return -ENOBUFS; 1237 } 1238 1239 #ifdef CONFIG_PM 1240 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1241 struct sk_buff *msg) 1242 { 1243 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1244 struct nlattr *nl_tcp; 1245 1246 if (!tcp) 1247 return 0; 1248 1249 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1250 if (!nl_tcp) 1251 return -ENOBUFS; 1252 1253 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1254 tcp->data_payload_max)) 1255 return -ENOBUFS; 1256 1257 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1258 tcp->data_payload_max)) 1259 return -ENOBUFS; 1260 1261 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1262 return -ENOBUFS; 1263 1264 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1265 sizeof(*tcp->tok), tcp->tok)) 1266 return -ENOBUFS; 1267 1268 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1269 tcp->data_interval_max)) 1270 return -ENOBUFS; 1271 1272 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1273 tcp->wake_payload_max)) 1274 return -ENOBUFS; 1275 1276 nla_nest_end(msg, nl_tcp); 1277 return 0; 1278 } 1279 1280 static int nl80211_send_wowlan(struct sk_buff *msg, 1281 struct cfg80211_registered_device *rdev, 1282 bool large) 1283 { 1284 struct nlattr *nl_wowlan; 1285 1286 if (!rdev->wiphy.wowlan) 1287 return 0; 1288 1289 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1290 if (!nl_wowlan) 1291 return -ENOBUFS; 1292 1293 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1294 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1295 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1296 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1297 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1298 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1299 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1300 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1301 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1302 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1303 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1304 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1305 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1306 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1307 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1308 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1309 return -ENOBUFS; 1310 1311 if (rdev->wiphy.wowlan->n_patterns) { 1312 struct nl80211_pattern_support pat = { 1313 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1314 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1315 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1316 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1317 }; 1318 1319 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1320 sizeof(pat), &pat)) 1321 return -ENOBUFS; 1322 } 1323 1324 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1325 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1326 rdev->wiphy.wowlan->max_nd_match_sets)) 1327 return -ENOBUFS; 1328 1329 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1330 return -ENOBUFS; 1331 1332 nla_nest_end(msg, nl_wowlan); 1333 1334 return 0; 1335 } 1336 #endif 1337 1338 static int nl80211_send_coalesce(struct sk_buff *msg, 1339 struct cfg80211_registered_device *rdev) 1340 { 1341 struct nl80211_coalesce_rule_support rule; 1342 1343 if (!rdev->wiphy.coalesce) 1344 return 0; 1345 1346 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1347 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1348 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1349 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1350 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1351 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1352 1353 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1354 return -ENOBUFS; 1355 1356 return 0; 1357 } 1358 1359 static int 1360 nl80211_send_iftype_data(struct sk_buff *msg, 1361 const struct ieee80211_sband_iftype_data *iftdata) 1362 { 1363 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap; 1364 1365 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES, 1366 iftdata->types_mask)) 1367 return -ENOBUFS; 1368 1369 if (he_cap->has_he) { 1370 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC, 1371 sizeof(he_cap->he_cap_elem.mac_cap_info), 1372 he_cap->he_cap_elem.mac_cap_info) || 1373 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY, 1374 sizeof(he_cap->he_cap_elem.phy_cap_info), 1375 he_cap->he_cap_elem.phy_cap_info) || 1376 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET, 1377 sizeof(he_cap->he_mcs_nss_supp), 1378 &he_cap->he_mcs_nss_supp) || 1379 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE, 1380 sizeof(he_cap->ppe_thres), he_cap->ppe_thres)) 1381 return -ENOBUFS; 1382 } 1383 1384 return 0; 1385 } 1386 1387 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1388 struct ieee80211_supported_band *sband) 1389 { 1390 struct nlattr *nl_rates, *nl_rate; 1391 struct ieee80211_rate *rate; 1392 int i; 1393 1394 /* add HT info */ 1395 if (sband->ht_cap.ht_supported && 1396 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1397 sizeof(sband->ht_cap.mcs), 1398 &sband->ht_cap.mcs) || 1399 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1400 sband->ht_cap.cap) || 1401 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1402 sband->ht_cap.ampdu_factor) || 1403 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1404 sband->ht_cap.ampdu_density))) 1405 return -ENOBUFS; 1406 1407 /* add VHT info */ 1408 if (sband->vht_cap.vht_supported && 1409 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1410 sizeof(sband->vht_cap.vht_mcs), 1411 &sband->vht_cap.vht_mcs) || 1412 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1413 sband->vht_cap.cap))) 1414 return -ENOBUFS; 1415 1416 if (sband->n_iftype_data) { 1417 struct nlattr *nl_iftype_data = 1418 nla_nest_start(msg, NL80211_BAND_ATTR_IFTYPE_DATA); 1419 int err; 1420 1421 if (!nl_iftype_data) 1422 return -ENOBUFS; 1423 1424 for (i = 0; i < sband->n_iftype_data; i++) { 1425 struct nlattr *iftdata; 1426 1427 iftdata = nla_nest_start(msg, i + 1); 1428 if (!iftdata) 1429 return -ENOBUFS; 1430 1431 err = nl80211_send_iftype_data(msg, 1432 &sband->iftype_data[i]); 1433 if (err) 1434 return err; 1435 1436 nla_nest_end(msg, iftdata); 1437 } 1438 1439 nla_nest_end(msg, nl_iftype_data); 1440 } 1441 1442 /* add bitrates */ 1443 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1444 if (!nl_rates) 1445 return -ENOBUFS; 1446 1447 for (i = 0; i < sband->n_bitrates; i++) { 1448 nl_rate = nla_nest_start(msg, i); 1449 if (!nl_rate) 1450 return -ENOBUFS; 1451 1452 rate = &sband->bitrates[i]; 1453 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1454 rate->bitrate)) 1455 return -ENOBUFS; 1456 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1457 nla_put_flag(msg, 1458 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1459 return -ENOBUFS; 1460 1461 nla_nest_end(msg, nl_rate); 1462 } 1463 1464 nla_nest_end(msg, nl_rates); 1465 1466 return 0; 1467 } 1468 1469 static int 1470 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1471 const struct ieee80211_txrx_stypes *mgmt_stypes) 1472 { 1473 u16 stypes; 1474 struct nlattr *nl_ftypes, *nl_ifs; 1475 enum nl80211_iftype ift; 1476 int i; 1477 1478 if (!mgmt_stypes) 1479 return 0; 1480 1481 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1482 if (!nl_ifs) 1483 return -ENOBUFS; 1484 1485 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1486 nl_ftypes = nla_nest_start(msg, ift); 1487 if (!nl_ftypes) 1488 return -ENOBUFS; 1489 i = 0; 1490 stypes = mgmt_stypes[ift].tx; 1491 while (stypes) { 1492 if ((stypes & 1) && 1493 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1494 (i << 4) | IEEE80211_FTYPE_MGMT)) 1495 return -ENOBUFS; 1496 stypes >>= 1; 1497 i++; 1498 } 1499 nla_nest_end(msg, nl_ftypes); 1500 } 1501 1502 nla_nest_end(msg, nl_ifs); 1503 1504 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1505 if (!nl_ifs) 1506 return -ENOBUFS; 1507 1508 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1509 nl_ftypes = nla_nest_start(msg, ift); 1510 if (!nl_ftypes) 1511 return -ENOBUFS; 1512 i = 0; 1513 stypes = mgmt_stypes[ift].rx; 1514 while (stypes) { 1515 if ((stypes & 1) && 1516 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1517 (i << 4) | IEEE80211_FTYPE_MGMT)) 1518 return -ENOBUFS; 1519 stypes >>= 1; 1520 i++; 1521 } 1522 nla_nest_end(msg, nl_ftypes); 1523 } 1524 nla_nest_end(msg, nl_ifs); 1525 1526 return 0; 1527 } 1528 1529 #define CMD(op, n) \ 1530 do { \ 1531 if (rdev->ops->op) { \ 1532 i++; \ 1533 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1534 goto nla_put_failure; \ 1535 } \ 1536 } while (0) 1537 1538 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 1539 struct sk_buff *msg) 1540 { 1541 int i = 0; 1542 1543 /* 1544 * do *NOT* add anything into this function, new things need to be 1545 * advertised only to new versions of userspace that can deal with 1546 * the split (and they can't possibly care about new features... 1547 */ 1548 CMD(add_virtual_intf, NEW_INTERFACE); 1549 CMD(change_virtual_intf, SET_INTERFACE); 1550 CMD(add_key, NEW_KEY); 1551 CMD(start_ap, START_AP); 1552 CMD(add_station, NEW_STATION); 1553 CMD(add_mpath, NEW_MPATH); 1554 CMD(update_mesh_config, SET_MESH_CONFIG); 1555 CMD(change_bss, SET_BSS); 1556 CMD(auth, AUTHENTICATE); 1557 CMD(assoc, ASSOCIATE); 1558 CMD(deauth, DEAUTHENTICATE); 1559 CMD(disassoc, DISASSOCIATE); 1560 CMD(join_ibss, JOIN_IBSS); 1561 CMD(join_mesh, JOIN_MESH); 1562 CMD(set_pmksa, SET_PMKSA); 1563 CMD(del_pmksa, DEL_PMKSA); 1564 CMD(flush_pmksa, FLUSH_PMKSA); 1565 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1566 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1567 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1568 CMD(mgmt_tx, FRAME); 1569 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1570 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1571 i++; 1572 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1573 goto nla_put_failure; 1574 } 1575 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1576 rdev->ops->join_mesh) { 1577 i++; 1578 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1579 goto nla_put_failure; 1580 } 1581 CMD(set_wds_peer, SET_WDS_PEER); 1582 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1583 CMD(tdls_mgmt, TDLS_MGMT); 1584 CMD(tdls_oper, TDLS_OPER); 1585 } 1586 if (rdev->wiphy.max_sched_scan_reqs) 1587 CMD(sched_scan_start, START_SCHED_SCAN); 1588 CMD(probe_client, PROBE_CLIENT); 1589 CMD(set_noack_map, SET_NOACK_MAP); 1590 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1591 i++; 1592 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1593 goto nla_put_failure; 1594 } 1595 CMD(start_p2p_device, START_P2P_DEVICE); 1596 CMD(set_mcast_rate, SET_MCAST_RATE); 1597 #ifdef CONFIG_NL80211_TESTMODE 1598 CMD(testmode_cmd, TESTMODE); 1599 #endif 1600 1601 if (rdev->ops->connect || rdev->ops->auth) { 1602 i++; 1603 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1604 goto nla_put_failure; 1605 } 1606 1607 if (rdev->ops->disconnect || rdev->ops->deauth) { 1608 i++; 1609 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1610 goto nla_put_failure; 1611 } 1612 1613 return i; 1614 nla_put_failure: 1615 return -ENOBUFS; 1616 } 1617 1618 struct nl80211_dump_wiphy_state { 1619 s64 filter_wiphy; 1620 long start; 1621 long split_start, band_start, chan_start, capa_start; 1622 bool split; 1623 }; 1624 1625 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1626 enum nl80211_commands cmd, 1627 struct sk_buff *msg, u32 portid, u32 seq, 1628 int flags, struct nl80211_dump_wiphy_state *state) 1629 { 1630 void *hdr; 1631 struct nlattr *nl_bands, *nl_band; 1632 struct nlattr *nl_freqs, *nl_freq; 1633 struct nlattr *nl_cmds; 1634 enum nl80211_band band; 1635 struct ieee80211_channel *chan; 1636 int i; 1637 const struct ieee80211_txrx_stypes *mgmt_stypes = 1638 rdev->wiphy.mgmt_stypes; 1639 u32 features; 1640 1641 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1642 if (!hdr) 1643 return -ENOBUFS; 1644 1645 if (WARN_ON(!state)) 1646 return -EINVAL; 1647 1648 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1649 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1650 wiphy_name(&rdev->wiphy)) || 1651 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1652 cfg80211_rdev_list_generation)) 1653 goto nla_put_failure; 1654 1655 if (cmd != NL80211_CMD_NEW_WIPHY) 1656 goto finish; 1657 1658 switch (state->split_start) { 1659 case 0: 1660 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1661 rdev->wiphy.retry_short) || 1662 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1663 rdev->wiphy.retry_long) || 1664 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1665 rdev->wiphy.frag_threshold) || 1666 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1667 rdev->wiphy.rts_threshold) || 1668 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1669 rdev->wiphy.coverage_class) || 1670 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1671 rdev->wiphy.max_scan_ssids) || 1672 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1673 rdev->wiphy.max_sched_scan_ssids) || 1674 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1675 rdev->wiphy.max_scan_ie_len) || 1676 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1677 rdev->wiphy.max_sched_scan_ie_len) || 1678 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1679 rdev->wiphy.max_match_sets) || 1680 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1681 rdev->wiphy.max_sched_scan_plans) || 1682 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1683 rdev->wiphy.max_sched_scan_plan_interval) || 1684 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1685 rdev->wiphy.max_sched_scan_plan_iterations)) 1686 goto nla_put_failure; 1687 1688 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1689 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1690 goto nla_put_failure; 1691 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1692 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1693 goto nla_put_failure; 1694 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1695 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1696 goto nla_put_failure; 1697 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1698 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1699 goto nla_put_failure; 1700 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1701 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1702 goto nla_put_failure; 1703 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1704 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1705 goto nla_put_failure; 1706 state->split_start++; 1707 if (state->split) 1708 break; 1709 case 1: 1710 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1711 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1712 rdev->wiphy.cipher_suites)) 1713 goto nla_put_failure; 1714 1715 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1716 rdev->wiphy.max_num_pmkids)) 1717 goto nla_put_failure; 1718 1719 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1720 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1721 goto nla_put_failure; 1722 1723 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1724 rdev->wiphy.available_antennas_tx) || 1725 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1726 rdev->wiphy.available_antennas_rx)) 1727 goto nla_put_failure; 1728 1729 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1730 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1731 rdev->wiphy.probe_resp_offload)) 1732 goto nla_put_failure; 1733 1734 if ((rdev->wiphy.available_antennas_tx || 1735 rdev->wiphy.available_antennas_rx) && 1736 rdev->ops->get_antenna) { 1737 u32 tx_ant = 0, rx_ant = 0; 1738 int res; 1739 1740 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1741 if (!res) { 1742 if (nla_put_u32(msg, 1743 NL80211_ATTR_WIPHY_ANTENNA_TX, 1744 tx_ant) || 1745 nla_put_u32(msg, 1746 NL80211_ATTR_WIPHY_ANTENNA_RX, 1747 rx_ant)) 1748 goto nla_put_failure; 1749 } 1750 } 1751 1752 state->split_start++; 1753 if (state->split) 1754 break; 1755 case 2: 1756 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1757 rdev->wiphy.interface_modes)) 1758 goto nla_put_failure; 1759 state->split_start++; 1760 if (state->split) 1761 break; 1762 case 3: 1763 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1764 if (!nl_bands) 1765 goto nla_put_failure; 1766 1767 for (band = state->band_start; 1768 band < NUM_NL80211_BANDS; band++) { 1769 struct ieee80211_supported_band *sband; 1770 1771 sband = rdev->wiphy.bands[band]; 1772 1773 if (!sband) 1774 continue; 1775 1776 nl_band = nla_nest_start(msg, band); 1777 if (!nl_band) 1778 goto nla_put_failure; 1779 1780 switch (state->chan_start) { 1781 case 0: 1782 if (nl80211_send_band_rateinfo(msg, sband)) 1783 goto nla_put_failure; 1784 state->chan_start++; 1785 if (state->split) 1786 break; 1787 default: 1788 /* add frequencies */ 1789 nl_freqs = nla_nest_start( 1790 msg, NL80211_BAND_ATTR_FREQS); 1791 if (!nl_freqs) 1792 goto nla_put_failure; 1793 1794 for (i = state->chan_start - 1; 1795 i < sband->n_channels; 1796 i++) { 1797 nl_freq = nla_nest_start(msg, i); 1798 if (!nl_freq) 1799 goto nla_put_failure; 1800 1801 chan = &sband->channels[i]; 1802 1803 if (nl80211_msg_put_channel( 1804 msg, &rdev->wiphy, chan, 1805 state->split)) 1806 goto nla_put_failure; 1807 1808 nla_nest_end(msg, nl_freq); 1809 if (state->split) 1810 break; 1811 } 1812 if (i < sband->n_channels) 1813 state->chan_start = i + 2; 1814 else 1815 state->chan_start = 0; 1816 nla_nest_end(msg, nl_freqs); 1817 } 1818 1819 nla_nest_end(msg, nl_band); 1820 1821 if (state->split) { 1822 /* start again here */ 1823 if (state->chan_start) 1824 band--; 1825 break; 1826 } 1827 } 1828 nla_nest_end(msg, nl_bands); 1829 1830 if (band < NUM_NL80211_BANDS) 1831 state->band_start = band + 1; 1832 else 1833 state->band_start = 0; 1834 1835 /* if bands & channels are done, continue outside */ 1836 if (state->band_start == 0 && state->chan_start == 0) 1837 state->split_start++; 1838 if (state->split) 1839 break; 1840 case 4: 1841 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1842 if (!nl_cmds) 1843 goto nla_put_failure; 1844 1845 i = nl80211_add_commands_unsplit(rdev, msg); 1846 if (i < 0) 1847 goto nla_put_failure; 1848 if (state->split) { 1849 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1850 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1851 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1852 CMD(channel_switch, CHANNEL_SWITCH); 1853 CMD(set_qos_map, SET_QOS_MAP); 1854 if (rdev->wiphy.features & 1855 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1856 CMD(add_tx_ts, ADD_TX_TS); 1857 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 1858 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 1859 } 1860 #undef CMD 1861 1862 nla_nest_end(msg, nl_cmds); 1863 state->split_start++; 1864 if (state->split) 1865 break; 1866 case 5: 1867 if (rdev->ops->remain_on_channel && 1868 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1869 nla_put_u32(msg, 1870 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1871 rdev->wiphy.max_remain_on_channel_duration)) 1872 goto nla_put_failure; 1873 1874 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1875 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1876 goto nla_put_failure; 1877 1878 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1879 goto nla_put_failure; 1880 state->split_start++; 1881 if (state->split) 1882 break; 1883 case 6: 1884 #ifdef CONFIG_PM 1885 if (nl80211_send_wowlan(msg, rdev, state->split)) 1886 goto nla_put_failure; 1887 state->split_start++; 1888 if (state->split) 1889 break; 1890 #else 1891 state->split_start++; 1892 #endif 1893 case 7: 1894 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1895 rdev->wiphy.software_iftypes)) 1896 goto nla_put_failure; 1897 1898 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1899 state->split)) 1900 goto nla_put_failure; 1901 1902 state->split_start++; 1903 if (state->split) 1904 break; 1905 case 8: 1906 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1907 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1908 rdev->wiphy.ap_sme_capa)) 1909 goto nla_put_failure; 1910 1911 features = rdev->wiphy.features; 1912 /* 1913 * We can only add the per-channel limit information if the 1914 * dump is split, otherwise it makes it too big. Therefore 1915 * only advertise it in that case. 1916 */ 1917 if (state->split) 1918 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1919 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1920 goto nla_put_failure; 1921 1922 if (rdev->wiphy.ht_capa_mod_mask && 1923 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1924 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1925 rdev->wiphy.ht_capa_mod_mask)) 1926 goto nla_put_failure; 1927 1928 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1929 rdev->wiphy.max_acl_mac_addrs && 1930 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1931 rdev->wiphy.max_acl_mac_addrs)) 1932 goto nla_put_failure; 1933 1934 /* 1935 * Any information below this point is only available to 1936 * applications that can deal with it being split. This 1937 * helps ensure that newly added capabilities don't break 1938 * older tools by overrunning their buffers. 1939 * 1940 * We still increment split_start so that in the split 1941 * case we'll continue with more data in the next round, 1942 * but break unconditionally so unsplit data stops here. 1943 */ 1944 state->split_start++; 1945 break; 1946 case 9: 1947 if (rdev->wiphy.extended_capabilities && 1948 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1949 rdev->wiphy.extended_capabilities_len, 1950 rdev->wiphy.extended_capabilities) || 1951 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1952 rdev->wiphy.extended_capabilities_len, 1953 rdev->wiphy.extended_capabilities_mask))) 1954 goto nla_put_failure; 1955 1956 if (rdev->wiphy.vht_capa_mod_mask && 1957 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1958 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1959 rdev->wiphy.vht_capa_mod_mask)) 1960 goto nla_put_failure; 1961 1962 state->split_start++; 1963 break; 1964 case 10: 1965 if (nl80211_send_coalesce(msg, rdev)) 1966 goto nla_put_failure; 1967 1968 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1969 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1970 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1971 goto nla_put_failure; 1972 1973 if (rdev->wiphy.max_ap_assoc_sta && 1974 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1975 rdev->wiphy.max_ap_assoc_sta)) 1976 goto nla_put_failure; 1977 1978 state->split_start++; 1979 break; 1980 case 11: 1981 if (rdev->wiphy.n_vendor_commands) { 1982 const struct nl80211_vendor_cmd_info *info; 1983 struct nlattr *nested; 1984 1985 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1986 if (!nested) 1987 goto nla_put_failure; 1988 1989 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1990 info = &rdev->wiphy.vendor_commands[i].info; 1991 if (nla_put(msg, i + 1, sizeof(*info), info)) 1992 goto nla_put_failure; 1993 } 1994 nla_nest_end(msg, nested); 1995 } 1996 1997 if (rdev->wiphy.n_vendor_events) { 1998 const struct nl80211_vendor_cmd_info *info; 1999 struct nlattr *nested; 2000 2001 nested = nla_nest_start(msg, 2002 NL80211_ATTR_VENDOR_EVENTS); 2003 if (!nested) 2004 goto nla_put_failure; 2005 2006 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 2007 info = &rdev->wiphy.vendor_events[i]; 2008 if (nla_put(msg, i + 1, sizeof(*info), info)) 2009 goto nla_put_failure; 2010 } 2011 nla_nest_end(msg, nested); 2012 } 2013 state->split_start++; 2014 break; 2015 case 12: 2016 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 2017 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 2018 rdev->wiphy.max_num_csa_counters)) 2019 goto nla_put_failure; 2020 2021 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 2022 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 2023 goto nla_put_failure; 2024 2025 if (rdev->wiphy.max_sched_scan_reqs && 2026 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 2027 rdev->wiphy.max_sched_scan_reqs)) 2028 goto nla_put_failure; 2029 2030 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 2031 sizeof(rdev->wiphy.ext_features), 2032 rdev->wiphy.ext_features)) 2033 goto nla_put_failure; 2034 2035 if (rdev->wiphy.bss_select_support) { 2036 struct nlattr *nested; 2037 u32 bss_select_support = rdev->wiphy.bss_select_support; 2038 2039 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT); 2040 if (!nested) 2041 goto nla_put_failure; 2042 2043 i = 0; 2044 while (bss_select_support) { 2045 if ((bss_select_support & 1) && 2046 nla_put_flag(msg, i)) 2047 goto nla_put_failure; 2048 i++; 2049 bss_select_support >>= 1; 2050 } 2051 nla_nest_end(msg, nested); 2052 } 2053 2054 state->split_start++; 2055 break; 2056 case 13: 2057 if (rdev->wiphy.num_iftype_ext_capab && 2058 rdev->wiphy.iftype_ext_capab) { 2059 struct nlattr *nested_ext_capab, *nested; 2060 2061 nested = nla_nest_start(msg, 2062 NL80211_ATTR_IFTYPE_EXT_CAPA); 2063 if (!nested) 2064 goto nla_put_failure; 2065 2066 for (i = state->capa_start; 2067 i < rdev->wiphy.num_iftype_ext_capab; i++) { 2068 const struct wiphy_iftype_ext_capab *capab; 2069 2070 capab = &rdev->wiphy.iftype_ext_capab[i]; 2071 2072 nested_ext_capab = nla_nest_start(msg, i); 2073 if (!nested_ext_capab || 2074 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 2075 capab->iftype) || 2076 nla_put(msg, NL80211_ATTR_EXT_CAPA, 2077 capab->extended_capabilities_len, 2078 capab->extended_capabilities) || 2079 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 2080 capab->extended_capabilities_len, 2081 capab->extended_capabilities_mask)) 2082 goto nla_put_failure; 2083 2084 nla_nest_end(msg, nested_ext_capab); 2085 if (state->split) 2086 break; 2087 } 2088 nla_nest_end(msg, nested); 2089 if (i < rdev->wiphy.num_iftype_ext_capab) { 2090 state->capa_start = i + 1; 2091 break; 2092 } 2093 } 2094 2095 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 2096 rdev->wiphy.nan_supported_bands)) 2097 goto nla_put_failure; 2098 2099 if (wiphy_ext_feature_isset(&rdev->wiphy, 2100 NL80211_EXT_FEATURE_TXQS)) { 2101 struct cfg80211_txq_stats txqstats = {}; 2102 int res; 2103 2104 res = rdev_get_txq_stats(rdev, NULL, &txqstats); 2105 if (!res && 2106 !nl80211_put_txq_stats(msg, &txqstats, 2107 NL80211_ATTR_TXQ_STATS)) 2108 goto nla_put_failure; 2109 2110 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT, 2111 rdev->wiphy.txq_limit)) 2112 goto nla_put_failure; 2113 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT, 2114 rdev->wiphy.txq_memory_limit)) 2115 goto nla_put_failure; 2116 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM, 2117 rdev->wiphy.txq_quantum)) 2118 goto nla_put_failure; 2119 } 2120 2121 /* done */ 2122 state->split_start = 0; 2123 break; 2124 } 2125 finish: 2126 genlmsg_end(msg, hdr); 2127 return 0; 2128 2129 nla_put_failure: 2130 genlmsg_cancel(msg, hdr); 2131 return -EMSGSIZE; 2132 } 2133 2134 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 2135 struct netlink_callback *cb, 2136 struct nl80211_dump_wiphy_state *state) 2137 { 2138 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam); 2139 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb, 2140 nl80211_fam.maxattr, nl80211_policy, NULL); 2141 /* ignore parse errors for backward compatibility */ 2142 if (ret) 2143 return 0; 2144 2145 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 2146 if (tb[NL80211_ATTR_WIPHY]) 2147 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 2148 if (tb[NL80211_ATTR_WDEV]) 2149 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 2150 if (tb[NL80211_ATTR_IFINDEX]) { 2151 struct net_device *netdev; 2152 struct cfg80211_registered_device *rdev; 2153 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2154 2155 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 2156 if (!netdev) 2157 return -ENODEV; 2158 if (netdev->ieee80211_ptr) { 2159 rdev = wiphy_to_rdev( 2160 netdev->ieee80211_ptr->wiphy); 2161 state->filter_wiphy = rdev->wiphy_idx; 2162 } 2163 } 2164 2165 return 0; 2166 } 2167 2168 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 2169 { 2170 int idx = 0, ret; 2171 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 2172 struct cfg80211_registered_device *rdev; 2173 2174 rtnl_lock(); 2175 if (!state) { 2176 state = kzalloc(sizeof(*state), GFP_KERNEL); 2177 if (!state) { 2178 rtnl_unlock(); 2179 return -ENOMEM; 2180 } 2181 state->filter_wiphy = -1; 2182 ret = nl80211_dump_wiphy_parse(skb, cb, state); 2183 if (ret) { 2184 kfree(state); 2185 rtnl_unlock(); 2186 return ret; 2187 } 2188 cb->args[0] = (long)state; 2189 } 2190 2191 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2192 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2193 continue; 2194 if (++idx <= state->start) 2195 continue; 2196 if (state->filter_wiphy != -1 && 2197 state->filter_wiphy != rdev->wiphy_idx) 2198 continue; 2199 /* attempt to fit multiple wiphy data chunks into the skb */ 2200 do { 2201 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 2202 skb, 2203 NETLINK_CB(cb->skb).portid, 2204 cb->nlh->nlmsg_seq, 2205 NLM_F_MULTI, state); 2206 if (ret < 0) { 2207 /* 2208 * If sending the wiphy data didn't fit (ENOBUFS 2209 * or EMSGSIZE returned), this SKB is still 2210 * empty (so it's not too big because another 2211 * wiphy dataset is already in the skb) and 2212 * we've not tried to adjust the dump allocation 2213 * yet ... then adjust the alloc size to be 2214 * bigger, and return 1 but with the empty skb. 2215 * This results in an empty message being RX'ed 2216 * in userspace, but that is ignored. 2217 * 2218 * We can then retry with the larger buffer. 2219 */ 2220 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 2221 !skb->len && !state->split && 2222 cb->min_dump_alloc < 4096) { 2223 cb->min_dump_alloc = 4096; 2224 state->split_start = 0; 2225 rtnl_unlock(); 2226 return 1; 2227 } 2228 idx--; 2229 break; 2230 } 2231 } while (state->split_start > 0); 2232 break; 2233 } 2234 rtnl_unlock(); 2235 2236 state->start = idx; 2237 2238 return skb->len; 2239 } 2240 2241 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 2242 { 2243 kfree((void *)cb->args[0]); 2244 return 0; 2245 } 2246 2247 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 2248 { 2249 struct sk_buff *msg; 2250 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2251 struct nl80211_dump_wiphy_state state = {}; 2252 2253 msg = nlmsg_new(4096, GFP_KERNEL); 2254 if (!msg) 2255 return -ENOMEM; 2256 2257 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 2258 info->snd_portid, info->snd_seq, 0, 2259 &state) < 0) { 2260 nlmsg_free(msg); 2261 return -ENOBUFS; 2262 } 2263 2264 return genlmsg_reply(msg, info); 2265 } 2266 2267 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 2268 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 2269 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 2270 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 2271 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 2272 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 2273 }; 2274 2275 static int parse_txq_params(struct nlattr *tb[], 2276 struct ieee80211_txq_params *txq_params) 2277 { 2278 u8 ac; 2279 2280 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 2281 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 2282 !tb[NL80211_TXQ_ATTR_AIFS]) 2283 return -EINVAL; 2284 2285 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 2286 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 2287 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 2288 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 2289 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 2290 2291 if (ac >= NL80211_NUM_ACS) 2292 return -EINVAL; 2293 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS); 2294 return 0; 2295 } 2296 2297 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 2298 { 2299 /* 2300 * You can only set the channel explicitly for WDS interfaces, 2301 * all others have their channel managed via their respective 2302 * "establish a connection" command (connect, join, ...) 2303 * 2304 * For AP/GO and mesh mode, the channel can be set with the 2305 * channel userspace API, but is only stored and passed to the 2306 * low-level driver when the AP starts or the mesh is joined. 2307 * This is for backward compatibility, userspace can also give 2308 * the channel in the start-ap or join-mesh commands instead. 2309 * 2310 * Monitors are special as they are normally slaved to 2311 * whatever else is going on, so they have their own special 2312 * operation to set the monitor channel if possible. 2313 */ 2314 return !wdev || 2315 wdev->iftype == NL80211_IFTYPE_AP || 2316 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2317 wdev->iftype == NL80211_IFTYPE_MONITOR || 2318 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2319 } 2320 2321 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2322 struct genl_info *info, 2323 struct cfg80211_chan_def *chandef) 2324 { 2325 struct netlink_ext_ack *extack = info->extack; 2326 struct nlattr **attrs = info->attrs; 2327 u32 control_freq; 2328 2329 if (!attrs[NL80211_ATTR_WIPHY_FREQ]) 2330 return -EINVAL; 2331 2332 control_freq = nla_get_u32(attrs[NL80211_ATTR_WIPHY_FREQ]); 2333 2334 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 2335 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2336 chandef->center_freq1 = control_freq; 2337 chandef->center_freq2 = 0; 2338 2339 /* Primary channel not allowed */ 2340 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) { 2341 NL_SET_ERR_MSG_ATTR(extack, attrs[NL80211_ATTR_WIPHY_FREQ], 2342 "Channel is disabled"); 2343 return -EINVAL; 2344 } 2345 2346 if (attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2347 enum nl80211_channel_type chantype; 2348 2349 chantype = nla_get_u32(attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2350 2351 switch (chantype) { 2352 case NL80211_CHAN_NO_HT: 2353 case NL80211_CHAN_HT20: 2354 case NL80211_CHAN_HT40PLUS: 2355 case NL80211_CHAN_HT40MINUS: 2356 cfg80211_chandef_create(chandef, chandef->chan, 2357 chantype); 2358 /* user input for center_freq is incorrect */ 2359 if (attrs[NL80211_ATTR_CENTER_FREQ1] && 2360 chandef->center_freq1 != nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1])) { 2361 NL_SET_ERR_MSG_ATTR(extack, 2362 attrs[NL80211_ATTR_CENTER_FREQ1], 2363 "bad center frequency 1"); 2364 return -EINVAL; 2365 } 2366 /* center_freq2 must be zero */ 2367 if (attrs[NL80211_ATTR_CENTER_FREQ2] && 2368 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2])) { 2369 NL_SET_ERR_MSG_ATTR(extack, 2370 attrs[NL80211_ATTR_CENTER_FREQ2], 2371 "center frequency 2 can't be used"); 2372 return -EINVAL; 2373 } 2374 break; 2375 default: 2376 NL_SET_ERR_MSG_ATTR(extack, 2377 attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE], 2378 "invalid channel type"); 2379 return -EINVAL; 2380 } 2381 } else if (attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2382 chandef->width = 2383 nla_get_u32(attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2384 if (attrs[NL80211_ATTR_CENTER_FREQ1]) 2385 chandef->center_freq1 = 2386 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ1]); 2387 if (attrs[NL80211_ATTR_CENTER_FREQ2]) 2388 chandef->center_freq2 = 2389 nla_get_u32(attrs[NL80211_ATTR_CENTER_FREQ2]); 2390 } 2391 2392 if (!cfg80211_chandef_valid(chandef)) { 2393 NL_SET_ERR_MSG(extack, "invalid channel definition"); 2394 return -EINVAL; 2395 } 2396 2397 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2398 IEEE80211_CHAN_DISABLED)) { 2399 NL_SET_ERR_MSG(extack, "(extension) channel is disabled"); 2400 return -EINVAL; 2401 } 2402 2403 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2404 chandef->width == NL80211_CHAN_WIDTH_10) && 2405 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) { 2406 NL_SET_ERR_MSG(extack, "5/10 MHz not supported"); 2407 return -EINVAL; 2408 } 2409 2410 return 0; 2411 } 2412 2413 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 2414 struct net_device *dev, 2415 struct genl_info *info) 2416 { 2417 struct cfg80211_chan_def chandef; 2418 int result; 2419 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2420 struct wireless_dev *wdev = NULL; 2421 2422 if (dev) 2423 wdev = dev->ieee80211_ptr; 2424 if (!nl80211_can_set_dev_channel(wdev)) 2425 return -EOPNOTSUPP; 2426 if (wdev) 2427 iftype = wdev->iftype; 2428 2429 result = nl80211_parse_chandef(rdev, info, &chandef); 2430 if (result) 2431 return result; 2432 2433 switch (iftype) { 2434 case NL80211_IFTYPE_AP: 2435 case NL80211_IFTYPE_P2P_GO: 2436 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2437 iftype)) { 2438 result = -EINVAL; 2439 break; 2440 } 2441 if (wdev->beacon_interval) { 2442 if (!dev || !rdev->ops->set_ap_chanwidth || 2443 !(rdev->wiphy.features & 2444 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2445 result = -EBUSY; 2446 break; 2447 } 2448 2449 /* Only allow dynamic channel width changes */ 2450 if (chandef.chan != wdev->preset_chandef.chan) { 2451 result = -EBUSY; 2452 break; 2453 } 2454 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2455 if (result) 2456 break; 2457 } 2458 wdev->preset_chandef = chandef; 2459 result = 0; 2460 break; 2461 case NL80211_IFTYPE_MESH_POINT: 2462 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2463 break; 2464 case NL80211_IFTYPE_MONITOR: 2465 result = cfg80211_set_monitor_channel(rdev, &chandef); 2466 break; 2467 default: 2468 result = -EINVAL; 2469 } 2470 2471 return result; 2472 } 2473 2474 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2475 { 2476 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2477 struct net_device *netdev = info->user_ptr[1]; 2478 2479 return __nl80211_set_channel(rdev, netdev, info); 2480 } 2481 2482 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2483 { 2484 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2485 struct net_device *dev = info->user_ptr[1]; 2486 struct wireless_dev *wdev = dev->ieee80211_ptr; 2487 const u8 *bssid; 2488 2489 if (!info->attrs[NL80211_ATTR_MAC]) 2490 return -EINVAL; 2491 2492 if (netif_running(dev)) 2493 return -EBUSY; 2494 2495 if (!rdev->ops->set_wds_peer) 2496 return -EOPNOTSUPP; 2497 2498 if (wdev->iftype != NL80211_IFTYPE_WDS) 2499 return -EOPNOTSUPP; 2500 2501 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2502 return rdev_set_wds_peer(rdev, dev, bssid); 2503 } 2504 2505 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2506 { 2507 struct cfg80211_registered_device *rdev; 2508 struct net_device *netdev = NULL; 2509 struct wireless_dev *wdev; 2510 int result = 0, rem_txq_params = 0; 2511 struct nlattr *nl_txq_params; 2512 u32 changed; 2513 u8 retry_short = 0, retry_long = 0; 2514 u32 frag_threshold = 0, rts_threshold = 0; 2515 u8 coverage_class = 0; 2516 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0; 2517 2518 ASSERT_RTNL(); 2519 2520 /* 2521 * Try to find the wiphy and netdev. Normally this 2522 * function shouldn't need the netdev, but this is 2523 * done for backward compatibility -- previously 2524 * setting the channel was done per wiphy, but now 2525 * it is per netdev. Previous userland like hostapd 2526 * also passed a netdev to set_wiphy, so that it is 2527 * possible to let that go to the right netdev! 2528 */ 2529 2530 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2531 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2532 2533 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2534 if (netdev && netdev->ieee80211_ptr) 2535 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2536 else 2537 netdev = NULL; 2538 } 2539 2540 if (!netdev) { 2541 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2542 info->attrs); 2543 if (IS_ERR(rdev)) 2544 return PTR_ERR(rdev); 2545 wdev = NULL; 2546 netdev = NULL; 2547 result = 0; 2548 } else 2549 wdev = netdev->ieee80211_ptr; 2550 2551 /* 2552 * end workaround code, by now the rdev is available 2553 * and locked, and wdev may or may not be NULL. 2554 */ 2555 2556 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2557 result = cfg80211_dev_rename( 2558 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2559 2560 if (result) 2561 return result; 2562 2563 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2564 struct ieee80211_txq_params txq_params; 2565 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2566 2567 if (!rdev->ops->set_txq_params) 2568 return -EOPNOTSUPP; 2569 2570 if (!netdev) 2571 return -EINVAL; 2572 2573 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2574 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2575 return -EINVAL; 2576 2577 if (!netif_running(netdev)) 2578 return -ENETDOWN; 2579 2580 nla_for_each_nested(nl_txq_params, 2581 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2582 rem_txq_params) { 2583 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX, 2584 nl_txq_params, 2585 txq_params_policy, 2586 info->extack); 2587 if (result) 2588 return result; 2589 result = parse_txq_params(tb, &txq_params); 2590 if (result) 2591 return result; 2592 2593 result = rdev_set_txq_params(rdev, netdev, 2594 &txq_params); 2595 if (result) 2596 return result; 2597 } 2598 } 2599 2600 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2601 result = __nl80211_set_channel( 2602 rdev, 2603 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2604 info); 2605 if (result) 2606 return result; 2607 } 2608 2609 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2610 struct wireless_dev *txp_wdev = wdev; 2611 enum nl80211_tx_power_setting type; 2612 int idx, mbm = 0; 2613 2614 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2615 txp_wdev = NULL; 2616 2617 if (!rdev->ops->set_tx_power) 2618 return -EOPNOTSUPP; 2619 2620 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2621 type = nla_get_u32(info->attrs[idx]); 2622 2623 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2624 (type != NL80211_TX_POWER_AUTOMATIC)) 2625 return -EINVAL; 2626 2627 if (type != NL80211_TX_POWER_AUTOMATIC) { 2628 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2629 mbm = nla_get_u32(info->attrs[idx]); 2630 } 2631 2632 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2633 if (result) 2634 return result; 2635 } 2636 2637 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2638 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2639 u32 tx_ant, rx_ant; 2640 2641 if ((!rdev->wiphy.available_antennas_tx && 2642 !rdev->wiphy.available_antennas_rx) || 2643 !rdev->ops->set_antenna) 2644 return -EOPNOTSUPP; 2645 2646 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2647 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2648 2649 /* reject antenna configurations which don't match the 2650 * available antenna masks, except for the "all" mask */ 2651 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2652 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2653 return -EINVAL; 2654 2655 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2656 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2657 2658 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2659 if (result) 2660 return result; 2661 } 2662 2663 changed = 0; 2664 2665 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2666 retry_short = nla_get_u8( 2667 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2668 2669 changed |= WIPHY_PARAM_RETRY_SHORT; 2670 } 2671 2672 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2673 retry_long = nla_get_u8( 2674 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2675 2676 changed |= WIPHY_PARAM_RETRY_LONG; 2677 } 2678 2679 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2680 frag_threshold = nla_get_u32( 2681 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2682 if (frag_threshold < 256) 2683 return -EINVAL; 2684 2685 if (frag_threshold != (u32) -1) { 2686 /* 2687 * Fragments (apart from the last one) are required to 2688 * have even length. Make the fragmentation code 2689 * simpler by stripping LSB should someone try to use 2690 * odd threshold value. 2691 */ 2692 frag_threshold &= ~0x1; 2693 } 2694 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2695 } 2696 2697 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2698 rts_threshold = nla_get_u32( 2699 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2700 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2701 } 2702 2703 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2704 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2705 return -EINVAL; 2706 2707 coverage_class = nla_get_u8( 2708 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2709 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2710 } 2711 2712 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2713 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2714 return -EOPNOTSUPP; 2715 2716 changed |= WIPHY_PARAM_DYN_ACK; 2717 } 2718 2719 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) { 2720 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2721 NL80211_EXT_FEATURE_TXQS)) 2722 return -EOPNOTSUPP; 2723 txq_limit = nla_get_u32( 2724 info->attrs[NL80211_ATTR_TXQ_LIMIT]); 2725 changed |= WIPHY_PARAM_TXQ_LIMIT; 2726 } 2727 2728 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) { 2729 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2730 NL80211_EXT_FEATURE_TXQS)) 2731 return -EOPNOTSUPP; 2732 txq_memory_limit = nla_get_u32( 2733 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]); 2734 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT; 2735 } 2736 2737 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) { 2738 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2739 NL80211_EXT_FEATURE_TXQS)) 2740 return -EOPNOTSUPP; 2741 txq_quantum = nla_get_u32( 2742 info->attrs[NL80211_ATTR_TXQ_QUANTUM]); 2743 changed |= WIPHY_PARAM_TXQ_QUANTUM; 2744 } 2745 2746 if (changed) { 2747 u8 old_retry_short, old_retry_long; 2748 u32 old_frag_threshold, old_rts_threshold; 2749 u8 old_coverage_class; 2750 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum; 2751 2752 if (!rdev->ops->set_wiphy_params) 2753 return -EOPNOTSUPP; 2754 2755 old_retry_short = rdev->wiphy.retry_short; 2756 old_retry_long = rdev->wiphy.retry_long; 2757 old_frag_threshold = rdev->wiphy.frag_threshold; 2758 old_rts_threshold = rdev->wiphy.rts_threshold; 2759 old_coverage_class = rdev->wiphy.coverage_class; 2760 old_txq_limit = rdev->wiphy.txq_limit; 2761 old_txq_memory_limit = rdev->wiphy.txq_memory_limit; 2762 old_txq_quantum = rdev->wiphy.txq_quantum; 2763 2764 if (changed & WIPHY_PARAM_RETRY_SHORT) 2765 rdev->wiphy.retry_short = retry_short; 2766 if (changed & WIPHY_PARAM_RETRY_LONG) 2767 rdev->wiphy.retry_long = retry_long; 2768 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2769 rdev->wiphy.frag_threshold = frag_threshold; 2770 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2771 rdev->wiphy.rts_threshold = rts_threshold; 2772 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2773 rdev->wiphy.coverage_class = coverage_class; 2774 if (changed & WIPHY_PARAM_TXQ_LIMIT) 2775 rdev->wiphy.txq_limit = txq_limit; 2776 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT) 2777 rdev->wiphy.txq_memory_limit = txq_memory_limit; 2778 if (changed & WIPHY_PARAM_TXQ_QUANTUM) 2779 rdev->wiphy.txq_quantum = txq_quantum; 2780 2781 result = rdev_set_wiphy_params(rdev, changed); 2782 if (result) { 2783 rdev->wiphy.retry_short = old_retry_short; 2784 rdev->wiphy.retry_long = old_retry_long; 2785 rdev->wiphy.frag_threshold = old_frag_threshold; 2786 rdev->wiphy.rts_threshold = old_rts_threshold; 2787 rdev->wiphy.coverage_class = old_coverage_class; 2788 rdev->wiphy.txq_limit = old_txq_limit; 2789 rdev->wiphy.txq_memory_limit = old_txq_memory_limit; 2790 rdev->wiphy.txq_quantum = old_txq_quantum; 2791 return result; 2792 } 2793 } 2794 return 0; 2795 } 2796 2797 static inline u64 wdev_id(struct wireless_dev *wdev) 2798 { 2799 return (u64)wdev->identifier | 2800 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2801 } 2802 2803 static int nl80211_send_chandef(struct sk_buff *msg, 2804 const struct cfg80211_chan_def *chandef) 2805 { 2806 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2807 return -EINVAL; 2808 2809 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2810 chandef->chan->center_freq)) 2811 return -ENOBUFS; 2812 switch (chandef->width) { 2813 case NL80211_CHAN_WIDTH_20_NOHT: 2814 case NL80211_CHAN_WIDTH_20: 2815 case NL80211_CHAN_WIDTH_40: 2816 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2817 cfg80211_get_chandef_type(chandef))) 2818 return -ENOBUFS; 2819 break; 2820 default: 2821 break; 2822 } 2823 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2824 return -ENOBUFS; 2825 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2826 return -ENOBUFS; 2827 if (chandef->center_freq2 && 2828 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2829 return -ENOBUFS; 2830 return 0; 2831 } 2832 2833 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2834 struct cfg80211_registered_device *rdev, 2835 struct wireless_dev *wdev, bool removal) 2836 { 2837 struct net_device *dev = wdev->netdev; 2838 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2839 void *hdr; 2840 2841 if (removal) 2842 cmd = NL80211_CMD_DEL_INTERFACE; 2843 2844 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2845 if (!hdr) 2846 return -1; 2847 2848 if (dev && 2849 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2850 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2851 goto nla_put_failure; 2852 2853 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2854 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2855 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 2856 NL80211_ATTR_PAD) || 2857 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2858 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2859 rdev->devlist_generation ^ 2860 (cfg80211_rdev_list_generation << 2)) || 2861 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr)) 2862 goto nla_put_failure; 2863 2864 if (rdev->ops->get_channel) { 2865 int ret; 2866 struct cfg80211_chan_def chandef; 2867 2868 ret = rdev_get_channel(rdev, wdev, &chandef); 2869 if (ret == 0) { 2870 if (nl80211_send_chandef(msg, &chandef)) 2871 goto nla_put_failure; 2872 } 2873 } 2874 2875 if (rdev->ops->get_tx_power) { 2876 int dbm, ret; 2877 2878 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2879 if (ret == 0 && 2880 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2881 DBM_TO_MBM(dbm))) 2882 goto nla_put_failure; 2883 } 2884 2885 wdev_lock(wdev); 2886 switch (wdev->iftype) { 2887 case NL80211_IFTYPE_AP: 2888 if (wdev->ssid_len && 2889 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2890 goto nla_put_failure_locked; 2891 break; 2892 case NL80211_IFTYPE_STATION: 2893 case NL80211_IFTYPE_P2P_CLIENT: 2894 case NL80211_IFTYPE_ADHOC: { 2895 const u8 *ssid_ie; 2896 if (!wdev->current_bss) 2897 break; 2898 rcu_read_lock(); 2899 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, 2900 WLAN_EID_SSID); 2901 if (ssid_ie && 2902 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2)) 2903 goto nla_put_failure_rcu_locked; 2904 rcu_read_unlock(); 2905 break; 2906 } 2907 default: 2908 /* nothing */ 2909 break; 2910 } 2911 wdev_unlock(wdev); 2912 2913 if (rdev->ops->get_txq_stats) { 2914 struct cfg80211_txq_stats txqstats = {}; 2915 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats); 2916 2917 if (ret == 0 && 2918 !nl80211_put_txq_stats(msg, &txqstats, 2919 NL80211_ATTR_TXQ_STATS)) 2920 goto nla_put_failure; 2921 } 2922 2923 genlmsg_end(msg, hdr); 2924 return 0; 2925 2926 nla_put_failure_rcu_locked: 2927 rcu_read_unlock(); 2928 nla_put_failure_locked: 2929 wdev_unlock(wdev); 2930 nla_put_failure: 2931 genlmsg_cancel(msg, hdr); 2932 return -EMSGSIZE; 2933 } 2934 2935 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2936 { 2937 int wp_idx = 0; 2938 int if_idx = 0; 2939 int wp_start = cb->args[0]; 2940 int if_start = cb->args[1]; 2941 int filter_wiphy = -1; 2942 struct cfg80211_registered_device *rdev; 2943 struct wireless_dev *wdev; 2944 int ret; 2945 2946 rtnl_lock(); 2947 if (!cb->args[2]) { 2948 struct nl80211_dump_wiphy_state state = { 2949 .filter_wiphy = -1, 2950 }; 2951 2952 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 2953 if (ret) 2954 goto out_unlock; 2955 2956 filter_wiphy = state.filter_wiphy; 2957 2958 /* 2959 * if filtering, set cb->args[2] to +1 since 0 is the default 2960 * value needed to determine that parsing is necessary. 2961 */ 2962 if (filter_wiphy >= 0) 2963 cb->args[2] = filter_wiphy + 1; 2964 else 2965 cb->args[2] = -1; 2966 } else if (cb->args[2] > 0) { 2967 filter_wiphy = cb->args[2] - 1; 2968 } 2969 2970 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2971 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2972 continue; 2973 if (wp_idx < wp_start) { 2974 wp_idx++; 2975 continue; 2976 } 2977 2978 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 2979 continue; 2980 2981 if_idx = 0; 2982 2983 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 2984 if (if_idx < if_start) { 2985 if_idx++; 2986 continue; 2987 } 2988 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2989 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2990 rdev, wdev, false) < 0) { 2991 goto out; 2992 } 2993 if_idx++; 2994 } 2995 2996 wp_idx++; 2997 } 2998 out: 2999 cb->args[0] = wp_idx; 3000 cb->args[1] = if_idx; 3001 3002 ret = skb->len; 3003 out_unlock: 3004 rtnl_unlock(); 3005 3006 return ret; 3007 } 3008 3009 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 3010 { 3011 struct sk_buff *msg; 3012 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3013 struct wireless_dev *wdev = info->user_ptr[1]; 3014 3015 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3016 if (!msg) 3017 return -ENOMEM; 3018 3019 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3020 rdev, wdev, false) < 0) { 3021 nlmsg_free(msg); 3022 return -ENOBUFS; 3023 } 3024 3025 return genlmsg_reply(msg, info); 3026 } 3027 3028 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 3029 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 3030 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 3031 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 3032 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 3033 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 3034 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 3035 }; 3036 3037 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 3038 { 3039 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 3040 int flag; 3041 3042 *mntrflags = 0; 3043 3044 if (!nla) 3045 return -EINVAL; 3046 3047 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla, 3048 mntr_flags_policy, NULL)) 3049 return -EINVAL; 3050 3051 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 3052 if (flags[flag]) 3053 *mntrflags |= (1<<flag); 3054 3055 *mntrflags |= MONITOR_FLAG_CHANGED; 3056 3057 return 0; 3058 } 3059 3060 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 3061 enum nl80211_iftype type, 3062 struct genl_info *info, 3063 struct vif_params *params) 3064 { 3065 bool change = false; 3066 int err; 3067 3068 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 3069 if (type != NL80211_IFTYPE_MONITOR) 3070 return -EINVAL; 3071 3072 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 3073 ¶ms->flags); 3074 if (err) 3075 return err; 3076 3077 change = true; 3078 } 3079 3080 if (params->flags & MONITOR_FLAG_ACTIVE && 3081 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 3082 return -EOPNOTSUPP; 3083 3084 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 3085 const u8 *mumimo_groups; 3086 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3087 3088 if (type != NL80211_IFTYPE_MONITOR) 3089 return -EINVAL; 3090 3091 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3092 return -EOPNOTSUPP; 3093 3094 mumimo_groups = 3095 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 3096 3097 /* bits 0 and 63 are reserved and must be zero */ 3098 if ((mumimo_groups[0] & BIT(0)) || 3099 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 3100 return -EINVAL; 3101 3102 params->vht_mumimo_groups = mumimo_groups; 3103 change = true; 3104 } 3105 3106 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 3107 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3108 3109 if (type != NL80211_IFTYPE_MONITOR) 3110 return -EINVAL; 3111 3112 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3113 return -EOPNOTSUPP; 3114 3115 params->vht_mumimo_follow_addr = 3116 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 3117 change = true; 3118 } 3119 3120 return change ? 1 : 0; 3121 } 3122 3123 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 3124 struct net_device *netdev, u8 use_4addr, 3125 enum nl80211_iftype iftype) 3126 { 3127 if (!use_4addr) { 3128 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 3129 return -EBUSY; 3130 return 0; 3131 } 3132 3133 switch (iftype) { 3134 case NL80211_IFTYPE_AP_VLAN: 3135 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 3136 return 0; 3137 break; 3138 case NL80211_IFTYPE_STATION: 3139 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 3140 return 0; 3141 break; 3142 default: 3143 break; 3144 } 3145 3146 return -EOPNOTSUPP; 3147 } 3148 3149 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 3150 { 3151 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3152 struct vif_params params; 3153 int err; 3154 enum nl80211_iftype otype, ntype; 3155 struct net_device *dev = info->user_ptr[1]; 3156 bool change = false; 3157 3158 memset(¶ms, 0, sizeof(params)); 3159 3160 otype = ntype = dev->ieee80211_ptr->iftype; 3161 3162 if (info->attrs[NL80211_ATTR_IFTYPE]) { 3163 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3164 if (otype != ntype) 3165 change = true; 3166 } 3167 3168 if (info->attrs[NL80211_ATTR_MESH_ID]) { 3169 struct wireless_dev *wdev = dev->ieee80211_ptr; 3170 3171 if (ntype != NL80211_IFTYPE_MESH_POINT) 3172 return -EINVAL; 3173 if (netif_running(dev)) 3174 return -EBUSY; 3175 3176 wdev_lock(wdev); 3177 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3178 IEEE80211_MAX_MESH_ID_LEN); 3179 wdev->mesh_id_up_len = 3180 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3181 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3182 wdev->mesh_id_up_len); 3183 wdev_unlock(wdev); 3184 } 3185 3186 if (info->attrs[NL80211_ATTR_4ADDR]) { 3187 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3188 change = true; 3189 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 3190 if (err) 3191 return err; 3192 } else { 3193 params.use_4addr = -1; 3194 } 3195 3196 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 3197 if (err < 0) 3198 return err; 3199 if (err > 0) 3200 change = true; 3201 3202 if (change) 3203 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 3204 else 3205 err = 0; 3206 3207 if (!err && params.use_4addr != -1) 3208 dev->ieee80211_ptr->use_4addr = params.use_4addr; 3209 3210 return err; 3211 } 3212 3213 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 3214 { 3215 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3216 struct vif_params params; 3217 struct wireless_dev *wdev; 3218 struct sk_buff *msg; 3219 int err; 3220 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 3221 3222 /* to avoid failing a new interface creation due to pending removal */ 3223 cfg80211_destroy_ifaces(rdev); 3224 3225 memset(¶ms, 0, sizeof(params)); 3226 3227 if (!info->attrs[NL80211_ATTR_IFNAME]) 3228 return -EINVAL; 3229 3230 if (info->attrs[NL80211_ATTR_IFTYPE]) 3231 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3232 3233 if (!rdev->ops->add_virtual_intf || 3234 !(rdev->wiphy.interface_modes & (1 << type))) 3235 return -EOPNOTSUPP; 3236 3237 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 3238 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 3239 info->attrs[NL80211_ATTR_MAC]) { 3240 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 3241 ETH_ALEN); 3242 if (!is_valid_ether_addr(params.macaddr)) 3243 return -EADDRNOTAVAIL; 3244 } 3245 3246 if (info->attrs[NL80211_ATTR_4ADDR]) { 3247 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3248 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 3249 if (err) 3250 return err; 3251 } 3252 3253 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 3254 if (err < 0) 3255 return err; 3256 3257 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3258 if (!msg) 3259 return -ENOMEM; 3260 3261 wdev = rdev_add_virtual_intf(rdev, 3262 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 3263 NET_NAME_USER, type, ¶ms); 3264 if (WARN_ON(!wdev)) { 3265 nlmsg_free(msg); 3266 return -EPROTO; 3267 } else if (IS_ERR(wdev)) { 3268 nlmsg_free(msg); 3269 return PTR_ERR(wdev); 3270 } 3271 3272 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 3273 wdev->owner_nlportid = info->snd_portid; 3274 3275 switch (type) { 3276 case NL80211_IFTYPE_MESH_POINT: 3277 if (!info->attrs[NL80211_ATTR_MESH_ID]) 3278 break; 3279 wdev_lock(wdev); 3280 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3281 IEEE80211_MAX_MESH_ID_LEN); 3282 wdev->mesh_id_up_len = 3283 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3284 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3285 wdev->mesh_id_up_len); 3286 wdev_unlock(wdev); 3287 break; 3288 case NL80211_IFTYPE_NAN: 3289 case NL80211_IFTYPE_P2P_DEVICE: 3290 /* 3291 * P2P Device and NAN do not have a netdev, so don't go 3292 * through the netdev notifier and must be added here 3293 */ 3294 cfg80211_init_wdev(rdev, wdev); 3295 break; 3296 default: 3297 break; 3298 } 3299 3300 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3301 rdev, wdev, false) < 0) { 3302 nlmsg_free(msg); 3303 return -ENOBUFS; 3304 } 3305 3306 return genlmsg_reply(msg, info); 3307 } 3308 3309 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 3310 { 3311 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3312 struct wireless_dev *wdev = info->user_ptr[1]; 3313 3314 if (!rdev->ops->del_virtual_intf) 3315 return -EOPNOTSUPP; 3316 3317 /* 3318 * If we remove a wireless device without a netdev then clear 3319 * user_ptr[1] so that nl80211_post_doit won't dereference it 3320 * to check if it needs to do dev_put(). Otherwise it crashes 3321 * since the wdev has been freed, unlike with a netdev where 3322 * we need the dev_put() for the netdev to really be freed. 3323 */ 3324 if (!wdev->netdev) 3325 info->user_ptr[1] = NULL; 3326 3327 return rdev_del_virtual_intf(rdev, wdev); 3328 } 3329 3330 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 3331 { 3332 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3333 struct net_device *dev = info->user_ptr[1]; 3334 u16 noack_map; 3335 3336 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 3337 return -EINVAL; 3338 3339 if (!rdev->ops->set_noack_map) 3340 return -EOPNOTSUPP; 3341 3342 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 3343 3344 return rdev_set_noack_map(rdev, dev, noack_map); 3345 } 3346 3347 struct get_key_cookie { 3348 struct sk_buff *msg; 3349 int error; 3350 int idx; 3351 }; 3352 3353 static void get_key_callback(void *c, struct key_params *params) 3354 { 3355 struct nlattr *key; 3356 struct get_key_cookie *cookie = c; 3357 3358 if ((params->key && 3359 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 3360 params->key_len, params->key)) || 3361 (params->seq && 3362 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 3363 params->seq_len, params->seq)) || 3364 (params->cipher && 3365 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 3366 params->cipher))) 3367 goto nla_put_failure; 3368 3369 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 3370 if (!key) 3371 goto nla_put_failure; 3372 3373 if ((params->key && 3374 nla_put(cookie->msg, NL80211_KEY_DATA, 3375 params->key_len, params->key)) || 3376 (params->seq && 3377 nla_put(cookie->msg, NL80211_KEY_SEQ, 3378 params->seq_len, params->seq)) || 3379 (params->cipher && 3380 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 3381 params->cipher))) 3382 goto nla_put_failure; 3383 3384 if (nla_put_u8(cookie->msg, NL80211_KEY_IDX, cookie->idx)) 3385 goto nla_put_failure; 3386 3387 nla_nest_end(cookie->msg, key); 3388 3389 return; 3390 nla_put_failure: 3391 cookie->error = 1; 3392 } 3393 3394 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 3395 { 3396 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3397 int err; 3398 struct net_device *dev = info->user_ptr[1]; 3399 u8 key_idx = 0; 3400 const u8 *mac_addr = NULL; 3401 bool pairwise; 3402 struct get_key_cookie cookie = { 3403 .error = 0, 3404 }; 3405 void *hdr; 3406 struct sk_buff *msg; 3407 3408 if (info->attrs[NL80211_ATTR_KEY_IDX]) 3409 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 3410 3411 if (info->attrs[NL80211_ATTR_MAC]) 3412 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3413 3414 pairwise = !!mac_addr; 3415 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 3416 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 3417 3418 if (kt != NL80211_KEYTYPE_GROUP && 3419 kt != NL80211_KEYTYPE_PAIRWISE) 3420 return -EINVAL; 3421 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 3422 } 3423 3424 if (!rdev->ops->get_key) 3425 return -EOPNOTSUPP; 3426 3427 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3428 return -ENOENT; 3429 3430 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3431 if (!msg) 3432 return -ENOMEM; 3433 3434 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 3435 NL80211_CMD_NEW_KEY); 3436 if (!hdr) 3437 goto nla_put_failure; 3438 3439 cookie.msg = msg; 3440 cookie.idx = key_idx; 3441 3442 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3443 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 3444 goto nla_put_failure; 3445 if (mac_addr && 3446 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 3447 goto nla_put_failure; 3448 3449 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 3450 get_key_callback); 3451 3452 if (err) 3453 goto free_msg; 3454 3455 if (cookie.error) 3456 goto nla_put_failure; 3457 3458 genlmsg_end(msg, hdr); 3459 return genlmsg_reply(msg, info); 3460 3461 nla_put_failure: 3462 err = -ENOBUFS; 3463 free_msg: 3464 nlmsg_free(msg); 3465 return err; 3466 } 3467 3468 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 3469 { 3470 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3471 struct key_parse key; 3472 int err; 3473 struct net_device *dev = info->user_ptr[1]; 3474 3475 err = nl80211_parse_key(info, &key); 3476 if (err) 3477 return err; 3478 3479 if (key.idx < 0) 3480 return -EINVAL; 3481 3482 /* only support setting default key */ 3483 if (!key.def && !key.defmgmt) 3484 return -EINVAL; 3485 3486 wdev_lock(dev->ieee80211_ptr); 3487 3488 if (key.def) { 3489 if (!rdev->ops->set_default_key) { 3490 err = -EOPNOTSUPP; 3491 goto out; 3492 } 3493 3494 err = nl80211_key_allowed(dev->ieee80211_ptr); 3495 if (err) 3496 goto out; 3497 3498 err = rdev_set_default_key(rdev, dev, key.idx, 3499 key.def_uni, key.def_multi); 3500 3501 if (err) 3502 goto out; 3503 3504 #ifdef CONFIG_CFG80211_WEXT 3505 dev->ieee80211_ptr->wext.default_key = key.idx; 3506 #endif 3507 } else { 3508 if (key.def_uni || !key.def_multi) { 3509 err = -EINVAL; 3510 goto out; 3511 } 3512 3513 if (!rdev->ops->set_default_mgmt_key) { 3514 err = -EOPNOTSUPP; 3515 goto out; 3516 } 3517 3518 err = nl80211_key_allowed(dev->ieee80211_ptr); 3519 if (err) 3520 goto out; 3521 3522 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 3523 if (err) 3524 goto out; 3525 3526 #ifdef CONFIG_CFG80211_WEXT 3527 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3528 #endif 3529 } 3530 3531 out: 3532 wdev_unlock(dev->ieee80211_ptr); 3533 3534 return err; 3535 } 3536 3537 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3538 { 3539 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3540 int err; 3541 struct net_device *dev = info->user_ptr[1]; 3542 struct key_parse key; 3543 const u8 *mac_addr = NULL; 3544 3545 err = nl80211_parse_key(info, &key); 3546 if (err) 3547 return err; 3548 3549 if (!key.p.key) 3550 return -EINVAL; 3551 3552 if (info->attrs[NL80211_ATTR_MAC]) 3553 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3554 3555 if (key.type == -1) { 3556 if (mac_addr) 3557 key.type = NL80211_KEYTYPE_PAIRWISE; 3558 else 3559 key.type = NL80211_KEYTYPE_GROUP; 3560 } 3561 3562 /* for now */ 3563 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3564 key.type != NL80211_KEYTYPE_GROUP) 3565 return -EINVAL; 3566 3567 if (!rdev->ops->add_key) 3568 return -EOPNOTSUPP; 3569 3570 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3571 key.type == NL80211_KEYTYPE_PAIRWISE, 3572 mac_addr)) 3573 return -EINVAL; 3574 3575 wdev_lock(dev->ieee80211_ptr); 3576 err = nl80211_key_allowed(dev->ieee80211_ptr); 3577 if (!err) 3578 err = rdev_add_key(rdev, dev, key.idx, 3579 key.type == NL80211_KEYTYPE_PAIRWISE, 3580 mac_addr, &key.p); 3581 wdev_unlock(dev->ieee80211_ptr); 3582 3583 return err; 3584 } 3585 3586 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3587 { 3588 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3589 int err; 3590 struct net_device *dev = info->user_ptr[1]; 3591 u8 *mac_addr = NULL; 3592 struct key_parse key; 3593 3594 err = nl80211_parse_key(info, &key); 3595 if (err) 3596 return err; 3597 3598 if (info->attrs[NL80211_ATTR_MAC]) 3599 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3600 3601 if (key.type == -1) { 3602 if (mac_addr) 3603 key.type = NL80211_KEYTYPE_PAIRWISE; 3604 else 3605 key.type = NL80211_KEYTYPE_GROUP; 3606 } 3607 3608 /* for now */ 3609 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3610 key.type != NL80211_KEYTYPE_GROUP) 3611 return -EINVAL; 3612 3613 if (!rdev->ops->del_key) 3614 return -EOPNOTSUPP; 3615 3616 wdev_lock(dev->ieee80211_ptr); 3617 err = nl80211_key_allowed(dev->ieee80211_ptr); 3618 3619 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3620 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3621 err = -ENOENT; 3622 3623 if (!err) 3624 err = rdev_del_key(rdev, dev, key.idx, 3625 key.type == NL80211_KEYTYPE_PAIRWISE, 3626 mac_addr); 3627 3628 #ifdef CONFIG_CFG80211_WEXT 3629 if (!err) { 3630 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3631 dev->ieee80211_ptr->wext.default_key = -1; 3632 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3633 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3634 } 3635 #endif 3636 wdev_unlock(dev->ieee80211_ptr); 3637 3638 return err; 3639 } 3640 3641 /* This function returns an error or the number of nested attributes */ 3642 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3643 { 3644 struct nlattr *attr; 3645 int n_entries = 0, tmp; 3646 3647 nla_for_each_nested(attr, nl_attr, tmp) { 3648 if (nla_len(attr) != ETH_ALEN) 3649 return -EINVAL; 3650 3651 n_entries++; 3652 } 3653 3654 return n_entries; 3655 } 3656 3657 /* 3658 * This function parses ACL information and allocates memory for ACL data. 3659 * On successful return, the calling function is responsible to free the 3660 * ACL buffer returned by this function. 3661 */ 3662 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3663 struct genl_info *info) 3664 { 3665 enum nl80211_acl_policy acl_policy; 3666 struct nlattr *attr; 3667 struct cfg80211_acl_data *acl; 3668 int i = 0, n_entries, tmp; 3669 3670 if (!wiphy->max_acl_mac_addrs) 3671 return ERR_PTR(-EOPNOTSUPP); 3672 3673 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3674 return ERR_PTR(-EINVAL); 3675 3676 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3677 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3678 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3679 return ERR_PTR(-EINVAL); 3680 3681 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3682 return ERR_PTR(-EINVAL); 3683 3684 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3685 if (n_entries < 0) 3686 return ERR_PTR(n_entries); 3687 3688 if (n_entries > wiphy->max_acl_mac_addrs) 3689 return ERR_PTR(-ENOTSUPP); 3690 3691 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3692 GFP_KERNEL); 3693 if (!acl) 3694 return ERR_PTR(-ENOMEM); 3695 3696 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3697 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3698 i++; 3699 } 3700 3701 acl->n_acl_entries = n_entries; 3702 acl->acl_policy = acl_policy; 3703 3704 return acl; 3705 } 3706 3707 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3708 { 3709 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3710 struct net_device *dev = info->user_ptr[1]; 3711 struct cfg80211_acl_data *acl; 3712 int err; 3713 3714 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3715 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3716 return -EOPNOTSUPP; 3717 3718 if (!dev->ieee80211_ptr->beacon_interval) 3719 return -EINVAL; 3720 3721 acl = parse_acl_data(&rdev->wiphy, info); 3722 if (IS_ERR(acl)) 3723 return PTR_ERR(acl); 3724 3725 err = rdev_set_mac_acl(rdev, dev, acl); 3726 3727 kfree(acl); 3728 3729 return err; 3730 } 3731 3732 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 3733 u8 *rates, u8 rates_len) 3734 { 3735 u8 i; 3736 u32 mask = 0; 3737 3738 for (i = 0; i < rates_len; i++) { 3739 int rate = (rates[i] & 0x7f) * 5; 3740 int ridx; 3741 3742 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 3743 struct ieee80211_rate *srate = 3744 &sband->bitrates[ridx]; 3745 if (rate == srate->bitrate) { 3746 mask |= 1 << ridx; 3747 break; 3748 } 3749 } 3750 if (ridx == sband->n_bitrates) 3751 return 0; /* rate not found */ 3752 } 3753 3754 return mask; 3755 } 3756 3757 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 3758 u8 *rates, u8 rates_len, 3759 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 3760 { 3761 u8 i; 3762 3763 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 3764 3765 for (i = 0; i < rates_len; i++) { 3766 int ridx, rbit; 3767 3768 ridx = rates[i] / 8; 3769 rbit = BIT(rates[i] % 8); 3770 3771 /* check validity */ 3772 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 3773 return false; 3774 3775 /* check availability */ 3776 ridx = array_index_nospec(ridx, IEEE80211_HT_MCS_MASK_LEN); 3777 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 3778 mcs[ridx] |= rbit; 3779 else 3780 return false; 3781 } 3782 3783 return true; 3784 } 3785 3786 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 3787 { 3788 u16 mcs_mask = 0; 3789 3790 switch (vht_mcs_map) { 3791 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 3792 break; 3793 case IEEE80211_VHT_MCS_SUPPORT_0_7: 3794 mcs_mask = 0x00FF; 3795 break; 3796 case IEEE80211_VHT_MCS_SUPPORT_0_8: 3797 mcs_mask = 0x01FF; 3798 break; 3799 case IEEE80211_VHT_MCS_SUPPORT_0_9: 3800 mcs_mask = 0x03FF; 3801 break; 3802 default: 3803 break; 3804 } 3805 3806 return mcs_mask; 3807 } 3808 3809 static void vht_build_mcs_mask(u16 vht_mcs_map, 3810 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 3811 { 3812 u8 nss; 3813 3814 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 3815 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 3816 vht_mcs_map >>= 2; 3817 } 3818 } 3819 3820 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 3821 struct nl80211_txrate_vht *txrate, 3822 u16 mcs[NL80211_VHT_NSS_MAX]) 3823 { 3824 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3825 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 3826 u8 i; 3827 3828 if (!sband->vht_cap.vht_supported) 3829 return false; 3830 3831 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 3832 3833 /* Build vht_mcs_mask from VHT capabilities */ 3834 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 3835 3836 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3837 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 3838 mcs[i] = txrate->mcs[i]; 3839 else 3840 return false; 3841 } 3842 3843 return true; 3844 } 3845 3846 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 3847 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 3848 .len = NL80211_MAX_SUPP_RATES }, 3849 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 3850 .len = NL80211_MAX_SUPP_HT_RATES }, 3851 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 3852 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 3853 }; 3854 3855 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 3856 struct cfg80211_bitrate_mask *mask) 3857 { 3858 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 3859 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3860 int rem, i; 3861 struct nlattr *tx_rates; 3862 struct ieee80211_supported_band *sband; 3863 u16 vht_tx_mcs_map; 3864 3865 memset(mask, 0, sizeof(*mask)); 3866 /* Default to all rates enabled */ 3867 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3868 sband = rdev->wiphy.bands[i]; 3869 3870 if (!sband) 3871 continue; 3872 3873 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 3874 memcpy(mask->control[i].ht_mcs, 3875 sband->ht_cap.mcs.rx_mask, 3876 sizeof(mask->control[i].ht_mcs)); 3877 3878 if (!sband->vht_cap.vht_supported) 3879 continue; 3880 3881 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3882 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 3883 } 3884 3885 /* if no rates are given set it back to the defaults */ 3886 if (!info->attrs[NL80211_ATTR_TX_RATES]) 3887 goto out; 3888 3889 /* The nested attribute uses enum nl80211_band as the index. This maps 3890 * directly to the enum nl80211_band values used in cfg80211. 3891 */ 3892 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 3893 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 3894 enum nl80211_band band = nla_type(tx_rates); 3895 int err; 3896 3897 if (band < 0 || band >= NUM_NL80211_BANDS) 3898 return -EINVAL; 3899 sband = rdev->wiphy.bands[band]; 3900 if (sband == NULL) 3901 return -EINVAL; 3902 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates, 3903 nl80211_txattr_policy, info->extack); 3904 if (err) 3905 return err; 3906 if (tb[NL80211_TXRATE_LEGACY]) { 3907 mask->control[band].legacy = rateset_to_mask( 3908 sband, 3909 nla_data(tb[NL80211_TXRATE_LEGACY]), 3910 nla_len(tb[NL80211_TXRATE_LEGACY])); 3911 if ((mask->control[band].legacy == 0) && 3912 nla_len(tb[NL80211_TXRATE_LEGACY])) 3913 return -EINVAL; 3914 } 3915 if (tb[NL80211_TXRATE_HT]) { 3916 if (!ht_rateset_to_mask( 3917 sband, 3918 nla_data(tb[NL80211_TXRATE_HT]), 3919 nla_len(tb[NL80211_TXRATE_HT]), 3920 mask->control[band].ht_mcs)) 3921 return -EINVAL; 3922 } 3923 if (tb[NL80211_TXRATE_VHT]) { 3924 if (!vht_set_mcs_mask( 3925 sband, 3926 nla_data(tb[NL80211_TXRATE_VHT]), 3927 mask->control[band].vht_mcs)) 3928 return -EINVAL; 3929 } 3930 if (tb[NL80211_TXRATE_GI]) { 3931 mask->control[band].gi = 3932 nla_get_u8(tb[NL80211_TXRATE_GI]); 3933 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 3934 return -EINVAL; 3935 } 3936 3937 if (mask->control[band].legacy == 0) { 3938 /* don't allow empty legacy rates if HT or VHT 3939 * are not even supported. 3940 */ 3941 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 3942 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 3943 return -EINVAL; 3944 3945 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 3946 if (mask->control[band].ht_mcs[i]) 3947 goto out; 3948 3949 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 3950 if (mask->control[band].vht_mcs[i]) 3951 goto out; 3952 3953 /* legacy and mcs rates may not be both empty */ 3954 return -EINVAL; 3955 } 3956 } 3957 3958 out: 3959 return 0; 3960 } 3961 3962 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 3963 enum nl80211_band band, 3964 struct cfg80211_bitrate_mask *beacon_rate) 3965 { 3966 u32 count_ht, count_vht, i; 3967 u32 rate = beacon_rate->control[band].legacy; 3968 3969 /* Allow only one rate */ 3970 if (hweight32(rate) > 1) 3971 return -EINVAL; 3972 3973 count_ht = 0; 3974 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3975 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 3976 return -EINVAL; 3977 } else if (beacon_rate->control[band].ht_mcs[i]) { 3978 count_ht++; 3979 if (count_ht > 1) 3980 return -EINVAL; 3981 } 3982 if (count_ht && rate) 3983 return -EINVAL; 3984 } 3985 3986 count_vht = 0; 3987 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3988 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 3989 return -EINVAL; 3990 } else if (beacon_rate->control[band].vht_mcs[i]) { 3991 count_vht++; 3992 if (count_vht > 1) 3993 return -EINVAL; 3994 } 3995 if (count_vht && rate) 3996 return -EINVAL; 3997 } 3998 3999 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht)) 4000 return -EINVAL; 4001 4002 if (rate && 4003 !wiphy_ext_feature_isset(&rdev->wiphy, 4004 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 4005 return -EINVAL; 4006 if (count_ht && 4007 !wiphy_ext_feature_isset(&rdev->wiphy, 4008 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 4009 return -EINVAL; 4010 if (count_vht && 4011 !wiphy_ext_feature_isset(&rdev->wiphy, 4012 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 4013 return -EINVAL; 4014 4015 return 0; 4016 } 4017 4018 static int nl80211_parse_beacon(struct cfg80211_registered_device *rdev, 4019 struct nlattr *attrs[], 4020 struct cfg80211_beacon_data *bcn) 4021 { 4022 bool haveinfo = false; 4023 int err; 4024 4025 memset(bcn, 0, sizeof(*bcn)); 4026 4027 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 4028 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 4029 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 4030 if (!bcn->head_len) 4031 return -EINVAL; 4032 haveinfo = true; 4033 } 4034 4035 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 4036 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 4037 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 4038 haveinfo = true; 4039 } 4040 4041 if (!haveinfo) 4042 return -EINVAL; 4043 4044 if (attrs[NL80211_ATTR_IE]) { 4045 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 4046 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 4047 } 4048 4049 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 4050 bcn->proberesp_ies = 4051 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4052 bcn->proberesp_ies_len = 4053 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4054 } 4055 4056 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 4057 bcn->assocresp_ies = 4058 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4059 bcn->assocresp_ies_len = 4060 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4061 } 4062 4063 if (attrs[NL80211_ATTR_PROBE_RESP]) { 4064 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 4065 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 4066 } 4067 4068 if (attrs[NL80211_ATTR_FTM_RESPONDER]) { 4069 struct nlattr *tb[NL80211_FTM_RESP_ATTR_MAX + 1]; 4070 4071 err = nla_parse_nested(tb, NL80211_FTM_RESP_ATTR_MAX, 4072 attrs[NL80211_ATTR_FTM_RESPONDER], 4073 NULL, NULL); 4074 if (err) 4075 return err; 4076 4077 if (tb[NL80211_FTM_RESP_ATTR_ENABLED] && 4078 wiphy_ext_feature_isset(&rdev->wiphy, 4079 NL80211_EXT_FEATURE_ENABLE_FTM_RESPONDER)) 4080 bcn->ftm_responder = 1; 4081 else 4082 return -EOPNOTSUPP; 4083 4084 if (tb[NL80211_FTM_RESP_ATTR_LCI]) { 4085 bcn->lci = nla_data(tb[NL80211_FTM_RESP_ATTR_LCI]); 4086 bcn->lci_len = nla_len(tb[NL80211_FTM_RESP_ATTR_LCI]); 4087 } 4088 4089 if (tb[NL80211_FTM_RESP_ATTR_CIVICLOC]) { 4090 bcn->civicloc = nla_data(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 4091 bcn->civicloc_len = nla_len(tb[NL80211_FTM_RESP_ATTR_CIVICLOC]); 4092 } 4093 } else { 4094 bcn->ftm_responder = -1; 4095 } 4096 4097 return 0; 4098 } 4099 4100 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 4101 const u8 *rates) 4102 { 4103 int i; 4104 4105 if (!rates) 4106 return; 4107 4108 for (i = 0; i < rates[1]; i++) { 4109 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 4110 params->ht_required = true; 4111 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 4112 params->vht_required = true; 4113 } 4114 } 4115 4116 /* 4117 * Since the nl80211 API didn't include, from the beginning, attributes about 4118 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 4119 * benefit of drivers that rebuild IEs in the firmware. 4120 */ 4121 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 4122 { 4123 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 4124 size_t ies_len = bcn->tail_len; 4125 const u8 *ies = bcn->tail; 4126 const u8 *rates; 4127 const u8 *cap; 4128 4129 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); 4130 nl80211_check_ap_rate_selectors(params, rates); 4131 4132 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 4133 nl80211_check_ap_rate_selectors(params, rates); 4134 4135 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); 4136 if (cap && cap[1] >= sizeof(*params->ht_cap)) 4137 params->ht_cap = (void *)(cap + 2); 4138 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 4139 if (cap && cap[1] >= sizeof(*params->vht_cap)) 4140 params->vht_cap = (void *)(cap + 2); 4141 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); 4142 if (cap && cap[1] >= sizeof(*params->he_cap) + 1) 4143 params->he_cap = (void *)(cap + 3); 4144 } 4145 4146 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 4147 struct cfg80211_ap_settings *params) 4148 { 4149 struct wireless_dev *wdev; 4150 bool ret = false; 4151 4152 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 4153 if (wdev->iftype != NL80211_IFTYPE_AP && 4154 wdev->iftype != NL80211_IFTYPE_P2P_GO) 4155 continue; 4156 4157 if (!wdev->preset_chandef.chan) 4158 continue; 4159 4160 params->chandef = wdev->preset_chandef; 4161 ret = true; 4162 break; 4163 } 4164 4165 return ret; 4166 } 4167 4168 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 4169 enum nl80211_auth_type auth_type, 4170 enum nl80211_commands cmd) 4171 { 4172 if (auth_type > NL80211_AUTHTYPE_MAX) 4173 return false; 4174 4175 switch (cmd) { 4176 case NL80211_CMD_AUTHENTICATE: 4177 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 4178 auth_type == NL80211_AUTHTYPE_SAE) 4179 return false; 4180 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4181 NL80211_EXT_FEATURE_FILS_STA) && 4182 (auth_type == NL80211_AUTHTYPE_FILS_SK || 4183 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4184 auth_type == NL80211_AUTHTYPE_FILS_PK)) 4185 return false; 4186 return true; 4187 case NL80211_CMD_CONNECT: 4188 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 4189 auth_type == NL80211_AUTHTYPE_SAE) 4190 return false; 4191 4192 /* FILS with SK PFS or PK not supported yet */ 4193 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4194 auth_type == NL80211_AUTHTYPE_FILS_PK) 4195 return false; 4196 if (!wiphy_ext_feature_isset( 4197 &rdev->wiphy, 4198 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 4199 auth_type == NL80211_AUTHTYPE_FILS_SK) 4200 return false; 4201 return true; 4202 case NL80211_CMD_START_AP: 4203 /* SAE not supported yet */ 4204 if (auth_type == NL80211_AUTHTYPE_SAE) 4205 return false; 4206 /* FILS not supported yet */ 4207 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 4208 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4209 auth_type == NL80211_AUTHTYPE_FILS_PK) 4210 return false; 4211 return true; 4212 default: 4213 return false; 4214 } 4215 } 4216 4217 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 4218 { 4219 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4220 struct net_device *dev = info->user_ptr[1]; 4221 struct wireless_dev *wdev = dev->ieee80211_ptr; 4222 struct cfg80211_ap_settings params; 4223 int err; 4224 4225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4227 return -EOPNOTSUPP; 4228 4229 if (!rdev->ops->start_ap) 4230 return -EOPNOTSUPP; 4231 4232 if (wdev->beacon_interval) 4233 return -EALREADY; 4234 4235 memset(¶ms, 0, sizeof(params)); 4236 4237 /* these are required for START_AP */ 4238 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 4239 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 4240 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 4241 return -EINVAL; 4242 4243 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon); 4244 if (err) 4245 return err; 4246 4247 params.beacon_interval = 4248 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 4249 params.dtim_period = 4250 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 4251 4252 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 4253 params.beacon_interval); 4254 if (err) 4255 return err; 4256 4257 /* 4258 * In theory, some of these attributes should be required here 4259 * but since they were not used when the command was originally 4260 * added, keep them optional for old user space programs to let 4261 * them continue to work with drivers that do not need the 4262 * additional information -- drivers must check! 4263 */ 4264 if (info->attrs[NL80211_ATTR_SSID]) { 4265 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4266 params.ssid_len = 4267 nla_len(info->attrs[NL80211_ATTR_SSID]); 4268 if (params.ssid_len == 0 || 4269 params.ssid_len > IEEE80211_MAX_SSID_LEN) 4270 return -EINVAL; 4271 } 4272 4273 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) 4274 params.hidden_ssid = nla_get_u32( 4275 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 4276 4277 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 4278 4279 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 4280 params.auth_type = nla_get_u32( 4281 info->attrs[NL80211_ATTR_AUTH_TYPE]); 4282 if (!nl80211_valid_auth_type(rdev, params.auth_type, 4283 NL80211_CMD_START_AP)) 4284 return -EINVAL; 4285 } else 4286 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 4287 4288 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 4289 NL80211_MAX_NR_CIPHER_SUITES); 4290 if (err) 4291 return err; 4292 4293 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 4294 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 4295 return -EOPNOTSUPP; 4296 params.inactivity_timeout = nla_get_u16( 4297 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 4298 } 4299 4300 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4301 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4302 return -EINVAL; 4303 params.p2p_ctwindow = 4304 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4305 if (params.p2p_ctwindow != 0 && 4306 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4307 return -EINVAL; 4308 } 4309 4310 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4311 u8 tmp; 4312 4313 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4314 return -EINVAL; 4315 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4316 params.p2p_opp_ps = tmp; 4317 if (params.p2p_opp_ps != 0 && 4318 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4319 return -EINVAL; 4320 } 4321 4322 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 4323 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 4324 if (err) 4325 return err; 4326 } else if (wdev->preset_chandef.chan) { 4327 params.chandef = wdev->preset_chandef; 4328 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 4329 return -EINVAL; 4330 4331 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 4332 wdev->iftype)) 4333 return -EINVAL; 4334 4335 if (info->attrs[NL80211_ATTR_TX_RATES]) { 4336 err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate); 4337 if (err) 4338 return err; 4339 4340 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band, 4341 ¶ms.beacon_rate); 4342 if (err) 4343 return err; 4344 } 4345 4346 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 4347 params.smps_mode = 4348 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 4349 switch (params.smps_mode) { 4350 case NL80211_SMPS_OFF: 4351 break; 4352 case NL80211_SMPS_STATIC: 4353 if (!(rdev->wiphy.features & 4354 NL80211_FEATURE_STATIC_SMPS)) 4355 return -EINVAL; 4356 break; 4357 case NL80211_SMPS_DYNAMIC: 4358 if (!(rdev->wiphy.features & 4359 NL80211_FEATURE_DYNAMIC_SMPS)) 4360 return -EINVAL; 4361 break; 4362 default: 4363 return -EINVAL; 4364 } 4365 } else { 4366 params.smps_mode = NL80211_SMPS_OFF; 4367 } 4368 4369 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 4370 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 4371 return -EOPNOTSUPP; 4372 4373 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 4374 params.acl = parse_acl_data(&rdev->wiphy, info); 4375 if (IS_ERR(params.acl)) 4376 return PTR_ERR(params.acl); 4377 } 4378 4379 nl80211_calculate_ap_params(¶ms); 4380 4381 wdev_lock(wdev); 4382 err = rdev_start_ap(rdev, dev, ¶ms); 4383 if (!err) { 4384 wdev->preset_chandef = params.chandef; 4385 wdev->beacon_interval = params.beacon_interval; 4386 wdev->chandef = params.chandef; 4387 wdev->ssid_len = params.ssid_len; 4388 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 4389 4390 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 4391 wdev->conn_owner_nlportid = info->snd_portid; 4392 } 4393 wdev_unlock(wdev); 4394 4395 kfree(params.acl); 4396 4397 return err; 4398 } 4399 4400 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 4401 { 4402 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4403 struct net_device *dev = info->user_ptr[1]; 4404 struct wireless_dev *wdev = dev->ieee80211_ptr; 4405 struct cfg80211_beacon_data params; 4406 int err; 4407 4408 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4409 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4410 return -EOPNOTSUPP; 4411 4412 if (!rdev->ops->change_beacon) 4413 return -EOPNOTSUPP; 4414 4415 if (!wdev->beacon_interval) 4416 return -EINVAL; 4417 4418 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms); 4419 if (err) 4420 return err; 4421 4422 wdev_lock(wdev); 4423 err = rdev_change_beacon(rdev, dev, ¶ms); 4424 wdev_unlock(wdev); 4425 4426 return err; 4427 } 4428 4429 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 4430 { 4431 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4432 struct net_device *dev = info->user_ptr[1]; 4433 4434 return cfg80211_stop_ap(rdev, dev, false); 4435 } 4436 4437 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 4438 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 4439 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 4440 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 4441 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 4442 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 4443 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 4444 }; 4445 4446 static int parse_station_flags(struct genl_info *info, 4447 enum nl80211_iftype iftype, 4448 struct station_parameters *params) 4449 { 4450 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 4451 struct nlattr *nla; 4452 int flag; 4453 4454 /* 4455 * Try parsing the new attribute first so userspace 4456 * can specify both for older kernels. 4457 */ 4458 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 4459 if (nla) { 4460 struct nl80211_sta_flag_update *sta_flags; 4461 4462 sta_flags = nla_data(nla); 4463 params->sta_flags_mask = sta_flags->mask; 4464 params->sta_flags_set = sta_flags->set; 4465 params->sta_flags_set &= params->sta_flags_mask; 4466 if ((params->sta_flags_mask | 4467 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 4468 return -EINVAL; 4469 return 0; 4470 } 4471 4472 /* if present, parse the old attribute */ 4473 4474 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 4475 if (!nla) 4476 return 0; 4477 4478 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla, 4479 sta_flags_policy, info->extack)) 4480 return -EINVAL; 4481 4482 /* 4483 * Only allow certain flags for interface types so that 4484 * other attributes are silently ignored. Remember that 4485 * this is backward compatibility code with old userspace 4486 * and shouldn't be hit in other cases anyway. 4487 */ 4488 switch (iftype) { 4489 case NL80211_IFTYPE_AP: 4490 case NL80211_IFTYPE_AP_VLAN: 4491 case NL80211_IFTYPE_P2P_GO: 4492 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4493 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4494 BIT(NL80211_STA_FLAG_WME) | 4495 BIT(NL80211_STA_FLAG_MFP); 4496 break; 4497 case NL80211_IFTYPE_P2P_CLIENT: 4498 case NL80211_IFTYPE_STATION: 4499 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4500 BIT(NL80211_STA_FLAG_TDLS_PEER); 4501 break; 4502 case NL80211_IFTYPE_MESH_POINT: 4503 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4504 BIT(NL80211_STA_FLAG_MFP) | 4505 BIT(NL80211_STA_FLAG_AUTHORIZED); 4506 break; 4507 default: 4508 return -EINVAL; 4509 } 4510 4511 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 4512 if (flags[flag]) { 4513 params->sta_flags_set |= (1<<flag); 4514 4515 /* no longer support new API additions in old API */ 4516 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 4517 return -EINVAL; 4518 } 4519 } 4520 4521 return 0; 4522 } 4523 4524 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 4525 int attr) 4526 { 4527 struct nlattr *rate; 4528 u32 bitrate; 4529 u16 bitrate_compat; 4530 enum nl80211_rate_info rate_flg; 4531 4532 rate = nla_nest_start(msg, attr); 4533 if (!rate) 4534 return false; 4535 4536 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 4537 bitrate = cfg80211_calculate_bitrate(info); 4538 /* report 16-bit bitrate only if we can */ 4539 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 4540 if (bitrate > 0 && 4541 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 4542 return false; 4543 if (bitrate_compat > 0 && 4544 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 4545 return false; 4546 4547 switch (info->bw) { 4548 case RATE_INFO_BW_5: 4549 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 4550 break; 4551 case RATE_INFO_BW_10: 4552 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 4553 break; 4554 default: 4555 WARN_ON(1); 4556 /* fall through */ 4557 case RATE_INFO_BW_20: 4558 rate_flg = 0; 4559 break; 4560 case RATE_INFO_BW_40: 4561 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 4562 break; 4563 case RATE_INFO_BW_80: 4564 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 4565 break; 4566 case RATE_INFO_BW_160: 4567 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 4568 break; 4569 case RATE_INFO_BW_HE_RU: 4570 rate_flg = 0; 4571 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS)); 4572 } 4573 4574 if (rate_flg && nla_put_flag(msg, rate_flg)) 4575 return false; 4576 4577 if (info->flags & RATE_INFO_FLAGS_MCS) { 4578 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 4579 return false; 4580 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4581 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4582 return false; 4583 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 4584 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 4585 return false; 4586 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 4587 return false; 4588 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4589 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4590 return false; 4591 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) { 4592 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs)) 4593 return false; 4594 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss)) 4595 return false; 4596 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi)) 4597 return false; 4598 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm)) 4599 return false; 4600 if (info->bw == RATE_INFO_BW_HE_RU && 4601 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC, 4602 info->he_ru_alloc)) 4603 return false; 4604 } 4605 4606 nla_nest_end(msg, rate); 4607 return true; 4608 } 4609 4610 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 4611 int id) 4612 { 4613 void *attr; 4614 int i = 0; 4615 4616 if (!mask) 4617 return true; 4618 4619 attr = nla_nest_start(msg, id); 4620 if (!attr) 4621 return false; 4622 4623 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 4624 if (!(mask & BIT(i))) 4625 continue; 4626 4627 if (nla_put_u8(msg, i, signal[i])) 4628 return false; 4629 } 4630 4631 nla_nest_end(msg, attr); 4632 4633 return true; 4634 } 4635 4636 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 4637 u32 seq, int flags, 4638 struct cfg80211_registered_device *rdev, 4639 struct net_device *dev, 4640 const u8 *mac_addr, struct station_info *sinfo) 4641 { 4642 void *hdr; 4643 struct nlattr *sinfoattr, *bss_param; 4644 4645 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 4646 if (!hdr) 4647 return -1; 4648 4649 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4650 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 4651 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 4652 goto nla_put_failure; 4653 4654 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 4655 if (!sinfoattr) 4656 goto nla_put_failure; 4657 4658 #define PUT_SINFO(attr, memb, type) do { \ 4659 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 4660 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 4661 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 4662 sinfo->memb)) \ 4663 goto nla_put_failure; \ 4664 } while (0) 4665 #define PUT_SINFO_U64(attr, memb) do { \ 4666 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 4667 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 4668 sinfo->memb, NL80211_STA_INFO_PAD)) \ 4669 goto nla_put_failure; \ 4670 } while (0) 4671 4672 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 4673 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 4674 4675 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 4676 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) && 4677 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 4678 (u32)sinfo->rx_bytes)) 4679 goto nla_put_failure; 4680 4681 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 4682 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) && 4683 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 4684 (u32)sinfo->tx_bytes)) 4685 goto nla_put_failure; 4686 4687 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 4688 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 4689 PUT_SINFO(LLID, llid, u16); 4690 PUT_SINFO(PLID, plid, u16); 4691 PUT_SINFO(PLINK_STATE, plink_state, u8); 4692 PUT_SINFO_U64(RX_DURATION, rx_duration); 4693 4694 switch (rdev->wiphy.signal_type) { 4695 case CFG80211_SIGNAL_TYPE_MBM: 4696 PUT_SINFO(SIGNAL, signal, u8); 4697 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 4698 break; 4699 default: 4700 break; 4701 } 4702 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) { 4703 if (!nl80211_put_signal(msg, sinfo->chains, 4704 sinfo->chain_signal, 4705 NL80211_STA_INFO_CHAIN_SIGNAL)) 4706 goto nla_put_failure; 4707 } 4708 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 4709 if (!nl80211_put_signal(msg, sinfo->chains, 4710 sinfo->chain_signal_avg, 4711 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 4712 goto nla_put_failure; 4713 } 4714 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) { 4715 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 4716 NL80211_STA_INFO_TX_BITRATE)) 4717 goto nla_put_failure; 4718 } 4719 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) { 4720 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 4721 NL80211_STA_INFO_RX_BITRATE)) 4722 goto nla_put_failure; 4723 } 4724 4725 PUT_SINFO(RX_PACKETS, rx_packets, u32); 4726 PUT_SINFO(TX_PACKETS, tx_packets, u32); 4727 PUT_SINFO(TX_RETRIES, tx_retries, u32); 4728 PUT_SINFO(TX_FAILED, tx_failed, u32); 4729 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 4730 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 4731 PUT_SINFO(LOCAL_PM, local_pm, u32); 4732 PUT_SINFO(PEER_PM, peer_pm, u32); 4733 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 4734 4735 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) { 4736 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 4737 if (!bss_param) 4738 goto nla_put_failure; 4739 4740 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 4741 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 4742 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 4743 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 4744 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 4745 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 4746 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 4747 sinfo->bss_param.dtim_period) || 4748 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 4749 sinfo->bss_param.beacon_interval)) 4750 goto nla_put_failure; 4751 4752 nla_nest_end(msg, bss_param); 4753 } 4754 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) && 4755 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 4756 sizeof(struct nl80211_sta_flag_update), 4757 &sinfo->sta_flags)) 4758 goto nla_put_failure; 4759 4760 PUT_SINFO_U64(T_OFFSET, t_offset); 4761 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 4762 PUT_SINFO_U64(BEACON_RX, rx_beacon); 4763 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 4764 PUT_SINFO(RX_MPDUS, rx_mpdu_count, u32); 4765 PUT_SINFO(FCS_ERROR_COUNT, fcs_err_count, u32); 4766 if (wiphy_ext_feature_isset(&rdev->wiphy, 4767 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) { 4768 PUT_SINFO(ACK_SIGNAL, ack_signal, u8); 4769 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8); 4770 } 4771 4772 #undef PUT_SINFO 4773 #undef PUT_SINFO_U64 4774 4775 if (sinfo->pertid) { 4776 struct nlattr *tidsattr; 4777 int tid; 4778 4779 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 4780 if (!tidsattr) 4781 goto nla_put_failure; 4782 4783 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 4784 struct cfg80211_tid_stats *tidstats; 4785 struct nlattr *tidattr; 4786 4787 tidstats = &sinfo->pertid[tid]; 4788 4789 if (!tidstats->filled) 4790 continue; 4791 4792 tidattr = nla_nest_start(msg, tid + 1); 4793 if (!tidattr) 4794 goto nla_put_failure; 4795 4796 #define PUT_TIDVAL_U64(attr, memb) do { \ 4797 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 4798 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 4799 tidstats->memb, NL80211_TID_STATS_PAD)) \ 4800 goto nla_put_failure; \ 4801 } while (0) 4802 4803 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 4804 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 4805 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 4806 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 4807 4808 #undef PUT_TIDVAL_U64 4809 if ((tidstats->filled & 4810 BIT(NL80211_TID_STATS_TXQ_STATS)) && 4811 !nl80211_put_txq_stats(msg, &tidstats->txq_stats, 4812 NL80211_TID_STATS_TXQ_STATS)) 4813 goto nla_put_failure; 4814 4815 nla_nest_end(msg, tidattr); 4816 } 4817 4818 nla_nest_end(msg, tidsattr); 4819 } 4820 4821 nla_nest_end(msg, sinfoattr); 4822 4823 if (sinfo->assoc_req_ies_len && 4824 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 4825 sinfo->assoc_req_ies)) 4826 goto nla_put_failure; 4827 4828 cfg80211_sinfo_release_content(sinfo); 4829 genlmsg_end(msg, hdr); 4830 return 0; 4831 4832 nla_put_failure: 4833 cfg80211_sinfo_release_content(sinfo); 4834 genlmsg_cancel(msg, hdr); 4835 return -EMSGSIZE; 4836 } 4837 4838 static int nl80211_dump_station(struct sk_buff *skb, 4839 struct netlink_callback *cb) 4840 { 4841 struct station_info sinfo; 4842 struct cfg80211_registered_device *rdev; 4843 struct wireless_dev *wdev; 4844 u8 mac_addr[ETH_ALEN]; 4845 int sta_idx = cb->args[2]; 4846 int err; 4847 4848 rtnl_lock(); 4849 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 4850 if (err) 4851 goto out_err; 4852 4853 if (!wdev->netdev) { 4854 err = -EINVAL; 4855 goto out_err; 4856 } 4857 4858 if (!rdev->ops->dump_station) { 4859 err = -EOPNOTSUPP; 4860 goto out_err; 4861 } 4862 4863 while (1) { 4864 memset(&sinfo, 0, sizeof(sinfo)); 4865 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 4866 mac_addr, &sinfo); 4867 if (err == -ENOENT) 4868 break; 4869 if (err) 4870 goto out_err; 4871 4872 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 4873 NETLINK_CB(cb->skb).portid, 4874 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4875 rdev, wdev->netdev, mac_addr, 4876 &sinfo) < 0) 4877 goto out; 4878 4879 sta_idx++; 4880 } 4881 4882 out: 4883 cb->args[2] = sta_idx; 4884 err = skb->len; 4885 out_err: 4886 rtnl_unlock(); 4887 4888 return err; 4889 } 4890 4891 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 4892 { 4893 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4894 struct net_device *dev = info->user_ptr[1]; 4895 struct station_info sinfo; 4896 struct sk_buff *msg; 4897 u8 *mac_addr = NULL; 4898 int err; 4899 4900 memset(&sinfo, 0, sizeof(sinfo)); 4901 4902 if (!info->attrs[NL80211_ATTR_MAC]) 4903 return -EINVAL; 4904 4905 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4906 4907 if (!rdev->ops->get_station) 4908 return -EOPNOTSUPP; 4909 4910 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 4911 if (err) 4912 return err; 4913 4914 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4915 if (!msg) { 4916 cfg80211_sinfo_release_content(&sinfo); 4917 return -ENOMEM; 4918 } 4919 4920 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 4921 info->snd_portid, info->snd_seq, 0, 4922 rdev, dev, mac_addr, &sinfo) < 0) { 4923 nlmsg_free(msg); 4924 return -ENOBUFS; 4925 } 4926 4927 return genlmsg_reply(msg, info); 4928 } 4929 4930 int cfg80211_check_station_change(struct wiphy *wiphy, 4931 struct station_parameters *params, 4932 enum cfg80211_station_type statype) 4933 { 4934 if (params->listen_interval != -1 && 4935 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4936 return -EINVAL; 4937 4938 if (params->support_p2p_ps != -1 && 4939 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4940 return -EINVAL; 4941 4942 if (params->aid && 4943 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 4944 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4945 return -EINVAL; 4946 4947 /* When you run into this, adjust the code below for the new flag */ 4948 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4949 4950 switch (statype) { 4951 case CFG80211_STA_MESH_PEER_KERNEL: 4952 case CFG80211_STA_MESH_PEER_USER: 4953 /* 4954 * No ignoring the TDLS flag here -- the userspace mesh 4955 * code doesn't have the bug of including TDLS in the 4956 * mask everywhere. 4957 */ 4958 if (params->sta_flags_mask & 4959 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4960 BIT(NL80211_STA_FLAG_MFP) | 4961 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4962 return -EINVAL; 4963 break; 4964 case CFG80211_STA_TDLS_PEER_SETUP: 4965 case CFG80211_STA_TDLS_PEER_ACTIVE: 4966 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4967 return -EINVAL; 4968 /* ignore since it can't change */ 4969 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4970 break; 4971 default: 4972 /* disallow mesh-specific things */ 4973 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4974 return -EINVAL; 4975 if (params->local_pm) 4976 return -EINVAL; 4977 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4978 return -EINVAL; 4979 } 4980 4981 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4982 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4983 /* TDLS can't be set, ... */ 4984 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4985 return -EINVAL; 4986 /* 4987 * ... but don't bother the driver with it. This works around 4988 * a hostapd/wpa_supplicant issue -- it always includes the 4989 * TLDS_PEER flag in the mask even for AP mode. 4990 */ 4991 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4992 } 4993 4994 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4995 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4996 /* reject other things that can't change */ 4997 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4998 return -EINVAL; 4999 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 5000 return -EINVAL; 5001 if (params->supported_rates) 5002 return -EINVAL; 5003 if (params->ext_capab || params->ht_capa || params->vht_capa || 5004 params->he_capa) 5005 return -EINVAL; 5006 } 5007 5008 if (statype != CFG80211_STA_AP_CLIENT && 5009 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 5010 if (params->vlan) 5011 return -EINVAL; 5012 } 5013 5014 switch (statype) { 5015 case CFG80211_STA_AP_MLME_CLIENT: 5016 /* Use this only for authorizing/unauthorizing a station */ 5017 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 5018 return -EOPNOTSUPP; 5019 break; 5020 case CFG80211_STA_AP_CLIENT: 5021 case CFG80211_STA_AP_CLIENT_UNASSOC: 5022 /* accept only the listed bits */ 5023 if (params->sta_flags_mask & 5024 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 5025 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5026 BIT(NL80211_STA_FLAG_ASSOCIATED) | 5027 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 5028 BIT(NL80211_STA_FLAG_WME) | 5029 BIT(NL80211_STA_FLAG_MFP))) 5030 return -EINVAL; 5031 5032 /* but authenticated/associated only if driver handles it */ 5033 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 5034 params->sta_flags_mask & 5035 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5036 BIT(NL80211_STA_FLAG_ASSOCIATED))) 5037 return -EINVAL; 5038 break; 5039 case CFG80211_STA_IBSS: 5040 case CFG80211_STA_AP_STA: 5041 /* reject any changes other than AUTHORIZED */ 5042 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 5043 return -EINVAL; 5044 break; 5045 case CFG80211_STA_TDLS_PEER_SETUP: 5046 /* reject any changes other than AUTHORIZED or WME */ 5047 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 5048 BIT(NL80211_STA_FLAG_WME))) 5049 return -EINVAL; 5050 /* force (at least) rates when authorizing */ 5051 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 5052 !params->supported_rates) 5053 return -EINVAL; 5054 break; 5055 case CFG80211_STA_TDLS_PEER_ACTIVE: 5056 /* reject any changes */ 5057 return -EINVAL; 5058 case CFG80211_STA_MESH_PEER_KERNEL: 5059 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 5060 return -EINVAL; 5061 break; 5062 case CFG80211_STA_MESH_PEER_USER: 5063 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 5064 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 5065 return -EINVAL; 5066 break; 5067 } 5068 5069 /* 5070 * Older kernel versions ignored this attribute entirely, so don't 5071 * reject attempts to update it but mark it as unused instead so the 5072 * driver won't look at the data. 5073 */ 5074 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 5075 statype != CFG80211_STA_TDLS_PEER_SETUP) 5076 params->opmode_notif_used = false; 5077 5078 return 0; 5079 } 5080 EXPORT_SYMBOL(cfg80211_check_station_change); 5081 5082 /* 5083 * Get vlan interface making sure it is running and on the right wiphy. 5084 */ 5085 static struct net_device *get_vlan(struct genl_info *info, 5086 struct cfg80211_registered_device *rdev) 5087 { 5088 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 5089 struct net_device *v; 5090 int ret; 5091 5092 if (!vlanattr) 5093 return NULL; 5094 5095 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 5096 if (!v) 5097 return ERR_PTR(-ENODEV); 5098 5099 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 5100 ret = -EINVAL; 5101 goto error; 5102 } 5103 5104 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5105 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5106 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 5107 ret = -EINVAL; 5108 goto error; 5109 } 5110 5111 if (!netif_running(v)) { 5112 ret = -ENETDOWN; 5113 goto error; 5114 } 5115 5116 return v; 5117 error: 5118 dev_put(v); 5119 return ERR_PTR(ret); 5120 } 5121 5122 static const struct nla_policy 5123 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 5124 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 5125 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 5126 }; 5127 5128 static int nl80211_parse_sta_wme(struct genl_info *info, 5129 struct station_parameters *params) 5130 { 5131 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 5132 struct nlattr *nla; 5133 int err; 5134 5135 /* parse WME attributes if present */ 5136 if (!info->attrs[NL80211_ATTR_STA_WME]) 5137 return 0; 5138 5139 nla = info->attrs[NL80211_ATTR_STA_WME]; 5140 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 5141 nl80211_sta_wme_policy, info->extack); 5142 if (err) 5143 return err; 5144 5145 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 5146 params->uapsd_queues = nla_get_u8( 5147 tb[NL80211_STA_WME_UAPSD_QUEUES]); 5148 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 5149 return -EINVAL; 5150 5151 if (tb[NL80211_STA_WME_MAX_SP]) 5152 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 5153 5154 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 5155 return -EINVAL; 5156 5157 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 5158 5159 return 0; 5160 } 5161 5162 static int nl80211_parse_sta_channel_info(struct genl_info *info, 5163 struct station_parameters *params) 5164 { 5165 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 5166 params->supported_channels = 5167 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 5168 params->supported_channels_len = 5169 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 5170 /* 5171 * Need to include at least one (first channel, number of 5172 * channels) tuple for each subband, and must have proper 5173 * tuples for the rest of the data as well. 5174 */ 5175 if (params->supported_channels_len < 2) 5176 return -EINVAL; 5177 if (params->supported_channels_len % 2) 5178 return -EINVAL; 5179 } 5180 5181 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 5182 params->supported_oper_classes = 5183 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 5184 params->supported_oper_classes_len = 5185 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 5186 /* 5187 * The value of the Length field of the Supported Operating 5188 * Classes element is between 2 and 253. 5189 */ 5190 if (params->supported_oper_classes_len < 2 || 5191 params->supported_oper_classes_len > 253) 5192 return -EINVAL; 5193 } 5194 return 0; 5195 } 5196 5197 static int nl80211_set_station_tdls(struct genl_info *info, 5198 struct station_parameters *params) 5199 { 5200 int err; 5201 /* Dummy STA entry gets updated once the peer capabilities are known */ 5202 if (info->attrs[NL80211_ATTR_PEER_AID]) 5203 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5204 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5205 params->ht_capa = 5206 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5207 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5208 params->vht_capa = 5209 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5210 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 5211 params->he_capa = 5212 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5213 params->he_capa_len = 5214 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5215 5216 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN) 5217 return -EINVAL; 5218 } 5219 5220 err = nl80211_parse_sta_channel_info(info, params); 5221 if (err) 5222 return err; 5223 5224 return nl80211_parse_sta_wme(info, params); 5225 } 5226 5227 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 5228 { 5229 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5230 struct net_device *dev = info->user_ptr[1]; 5231 struct station_parameters params; 5232 u8 *mac_addr; 5233 int err; 5234 5235 memset(¶ms, 0, sizeof(params)); 5236 5237 if (!rdev->ops->change_station) 5238 return -EOPNOTSUPP; 5239 5240 /* 5241 * AID and listen_interval properties can be set only for unassociated 5242 * station. Include these parameters here and will check them in 5243 * cfg80211_check_station_change(). 5244 */ 5245 if (info->attrs[NL80211_ATTR_STA_AID]) 5246 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5247 5248 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5249 params.listen_interval = 5250 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5251 else 5252 params.listen_interval = -1; 5253 5254 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) 5255 params.support_p2p_ps = 5256 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5257 else 5258 params.support_p2p_ps = -1; 5259 5260 if (!info->attrs[NL80211_ATTR_MAC]) 5261 return -EINVAL; 5262 5263 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5264 5265 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 5266 params.supported_rates = 5267 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5268 params.supported_rates_len = 5269 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5270 } 5271 5272 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5273 params.capability = 5274 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5275 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5276 } 5277 5278 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5279 params.ext_capab = 5280 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5281 params.ext_capab_len = 5282 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5283 } 5284 5285 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5286 return -EINVAL; 5287 5288 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 5289 params.plink_action = 5290 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5291 5292 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 5293 params.plink_state = 5294 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 5295 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) 5296 params.peer_aid = nla_get_u16( 5297 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 5298 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 5299 } 5300 5301 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) 5302 params.local_pm = nla_get_u32( 5303 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 5304 5305 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5306 params.opmode_notif_used = true; 5307 params.opmode_notif = 5308 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5309 } 5310 5311 /* Include parameters for TDLS peer (will check later) */ 5312 err = nl80211_set_station_tdls(info, ¶ms); 5313 if (err) 5314 return err; 5315 5316 params.vlan = get_vlan(info, rdev); 5317 if (IS_ERR(params.vlan)) 5318 return PTR_ERR(params.vlan); 5319 5320 switch (dev->ieee80211_ptr->iftype) { 5321 case NL80211_IFTYPE_AP: 5322 case NL80211_IFTYPE_AP_VLAN: 5323 case NL80211_IFTYPE_P2P_GO: 5324 case NL80211_IFTYPE_P2P_CLIENT: 5325 case NL80211_IFTYPE_STATION: 5326 case NL80211_IFTYPE_ADHOC: 5327 case NL80211_IFTYPE_MESH_POINT: 5328 break; 5329 default: 5330 err = -EOPNOTSUPP; 5331 goto out_put_vlan; 5332 } 5333 5334 /* driver will call cfg80211_check_station_change() */ 5335 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 5336 5337 out_put_vlan: 5338 if (params.vlan) 5339 dev_put(params.vlan); 5340 5341 return err; 5342 } 5343 5344 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 5345 { 5346 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5347 int err; 5348 struct net_device *dev = info->user_ptr[1]; 5349 struct station_parameters params; 5350 u8 *mac_addr = NULL; 5351 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5352 BIT(NL80211_STA_FLAG_ASSOCIATED); 5353 5354 memset(¶ms, 0, sizeof(params)); 5355 5356 if (!rdev->ops->add_station) 5357 return -EOPNOTSUPP; 5358 5359 if (!info->attrs[NL80211_ATTR_MAC]) 5360 return -EINVAL; 5361 5362 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5363 return -EINVAL; 5364 5365 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 5366 return -EINVAL; 5367 5368 if (!info->attrs[NL80211_ATTR_STA_AID] && 5369 !info->attrs[NL80211_ATTR_PEER_AID]) 5370 return -EINVAL; 5371 5372 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5373 params.supported_rates = 5374 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5375 params.supported_rates_len = 5376 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5377 params.listen_interval = 5378 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5379 5380 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 5381 params.support_p2p_ps = 5382 nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5383 } else { 5384 /* 5385 * if not specified, assume it's supported for P2P GO interface, 5386 * and is NOT supported for AP interface 5387 */ 5388 params.support_p2p_ps = 5389 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 5390 } 5391 5392 if (info->attrs[NL80211_ATTR_PEER_AID]) 5393 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5394 else 5395 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5396 5397 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5398 params.capability = 5399 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5400 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5401 } 5402 5403 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5404 params.ext_capab = 5405 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5406 params.ext_capab_len = 5407 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5408 } 5409 5410 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5411 params.ht_capa = 5412 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5413 5414 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5415 params.vht_capa = 5416 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5417 5418 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 5419 params.he_capa = 5420 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5421 params.he_capa_len = 5422 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5423 5424 /* max len is validated in nla policy */ 5425 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN) 5426 return -EINVAL; 5427 } 5428 5429 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5430 params.opmode_notif_used = true; 5431 params.opmode_notif = 5432 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5433 } 5434 5435 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) 5436 params.plink_action = 5437 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5438 5439 err = nl80211_parse_sta_channel_info(info, ¶ms); 5440 if (err) 5441 return err; 5442 5443 err = nl80211_parse_sta_wme(info, ¶ms); 5444 if (err) 5445 return err; 5446 5447 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5448 return -EINVAL; 5449 5450 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 5451 * as userspace might just pass through the capabilities from the IEs 5452 * directly, rather than enforcing this restriction and returning an 5453 * error in this case. 5454 */ 5455 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 5456 params.ht_capa = NULL; 5457 params.vht_capa = NULL; 5458 5459 /* HE requires WME */ 5460 if (params.he_capa_len) 5461 return -EINVAL; 5462 } 5463 5464 /* When you run into this, adjust the code below for the new flag */ 5465 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 5466 5467 switch (dev->ieee80211_ptr->iftype) { 5468 case NL80211_IFTYPE_AP: 5469 case NL80211_IFTYPE_AP_VLAN: 5470 case NL80211_IFTYPE_P2P_GO: 5471 /* ignore WME attributes if iface/sta is not capable */ 5472 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 5473 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 5474 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5475 5476 /* TDLS peers cannot be added */ 5477 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5478 info->attrs[NL80211_ATTR_PEER_AID]) 5479 return -EINVAL; 5480 /* but don't bother the driver with it */ 5481 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5482 5483 /* allow authenticated/associated only if driver handles it */ 5484 if (!(rdev->wiphy.features & 5485 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 5486 params.sta_flags_mask & auth_assoc) 5487 return -EINVAL; 5488 5489 /* Older userspace, or userspace wanting to be compatible with 5490 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 5491 * and assoc flags in the mask, but assumes the station will be 5492 * added as associated anyway since this was the required driver 5493 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 5494 * introduced. 5495 * In order to not bother drivers with this quirk in the API 5496 * set the flags in both the mask and set for new stations in 5497 * this case. 5498 */ 5499 if (!(params.sta_flags_mask & auth_assoc)) { 5500 params.sta_flags_mask |= auth_assoc; 5501 params.sta_flags_set |= auth_assoc; 5502 } 5503 5504 /* must be last in here for error handling */ 5505 params.vlan = get_vlan(info, rdev); 5506 if (IS_ERR(params.vlan)) 5507 return PTR_ERR(params.vlan); 5508 break; 5509 case NL80211_IFTYPE_MESH_POINT: 5510 /* ignore uAPSD data */ 5511 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5512 5513 /* associated is disallowed */ 5514 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 5515 return -EINVAL; 5516 /* TDLS peers cannot be added */ 5517 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5518 info->attrs[NL80211_ATTR_PEER_AID]) 5519 return -EINVAL; 5520 break; 5521 case NL80211_IFTYPE_STATION: 5522 case NL80211_IFTYPE_P2P_CLIENT: 5523 /* ignore uAPSD data */ 5524 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5525 5526 /* these are disallowed */ 5527 if (params.sta_flags_mask & 5528 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 5529 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 5530 return -EINVAL; 5531 /* Only TDLS peers can be added */ 5532 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 5533 return -EINVAL; 5534 /* Can only add if TDLS ... */ 5535 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 5536 return -EOPNOTSUPP; 5537 /* ... with external setup is supported */ 5538 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 5539 return -EOPNOTSUPP; 5540 /* 5541 * Older wpa_supplicant versions always mark the TDLS peer 5542 * as authorized, but it shouldn't yet be. 5543 */ 5544 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 5545 break; 5546 default: 5547 return -EOPNOTSUPP; 5548 } 5549 5550 /* be aware of params.vlan when changing code here */ 5551 5552 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 5553 5554 if (params.vlan) 5555 dev_put(params.vlan); 5556 return err; 5557 } 5558 5559 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 5560 { 5561 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5562 struct net_device *dev = info->user_ptr[1]; 5563 struct station_del_parameters params; 5564 5565 memset(¶ms, 0, sizeof(params)); 5566 5567 if (info->attrs[NL80211_ATTR_MAC]) 5568 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 5569 5570 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5571 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5572 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 5573 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5574 return -EINVAL; 5575 5576 if (!rdev->ops->del_station) 5577 return -EOPNOTSUPP; 5578 5579 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 5580 params.subtype = 5581 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 5582 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 5583 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 5584 return -EINVAL; 5585 } else { 5586 /* Default to Deauthentication frame */ 5587 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 5588 } 5589 5590 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 5591 params.reason_code = 5592 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 5593 if (params.reason_code == 0) 5594 return -EINVAL; /* 0 is reserved */ 5595 } else { 5596 /* Default to reason code 2 */ 5597 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 5598 } 5599 5600 return rdev_del_station(rdev, dev, ¶ms); 5601 } 5602 5603 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 5604 int flags, struct net_device *dev, 5605 u8 *dst, u8 *next_hop, 5606 struct mpath_info *pinfo) 5607 { 5608 void *hdr; 5609 struct nlattr *pinfoattr; 5610 5611 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 5612 if (!hdr) 5613 return -1; 5614 5615 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5616 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 5617 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 5618 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 5619 goto nla_put_failure; 5620 5621 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 5622 if (!pinfoattr) 5623 goto nla_put_failure; 5624 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 5625 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 5626 pinfo->frame_qlen)) 5627 goto nla_put_failure; 5628 if (((pinfo->filled & MPATH_INFO_SN) && 5629 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 5630 ((pinfo->filled & MPATH_INFO_METRIC) && 5631 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 5632 pinfo->metric)) || 5633 ((pinfo->filled & MPATH_INFO_EXPTIME) && 5634 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 5635 pinfo->exptime)) || 5636 ((pinfo->filled & MPATH_INFO_FLAGS) && 5637 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 5638 pinfo->flags)) || 5639 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 5640 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 5641 pinfo->discovery_timeout)) || 5642 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 5643 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 5644 pinfo->discovery_retries))) 5645 goto nla_put_failure; 5646 5647 nla_nest_end(msg, pinfoattr); 5648 5649 genlmsg_end(msg, hdr); 5650 return 0; 5651 5652 nla_put_failure: 5653 genlmsg_cancel(msg, hdr); 5654 return -EMSGSIZE; 5655 } 5656 5657 static int nl80211_dump_mpath(struct sk_buff *skb, 5658 struct netlink_callback *cb) 5659 { 5660 struct mpath_info pinfo; 5661 struct cfg80211_registered_device *rdev; 5662 struct wireless_dev *wdev; 5663 u8 dst[ETH_ALEN]; 5664 u8 next_hop[ETH_ALEN]; 5665 int path_idx = cb->args[2]; 5666 int err; 5667 5668 rtnl_lock(); 5669 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 5670 if (err) 5671 goto out_err; 5672 5673 if (!rdev->ops->dump_mpath) { 5674 err = -EOPNOTSUPP; 5675 goto out_err; 5676 } 5677 5678 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5679 err = -EOPNOTSUPP; 5680 goto out_err; 5681 } 5682 5683 while (1) { 5684 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 5685 next_hop, &pinfo); 5686 if (err == -ENOENT) 5687 break; 5688 if (err) 5689 goto out_err; 5690 5691 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5692 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5693 wdev->netdev, dst, next_hop, 5694 &pinfo) < 0) 5695 goto out; 5696 5697 path_idx++; 5698 } 5699 5700 out: 5701 cb->args[2] = path_idx; 5702 err = skb->len; 5703 out_err: 5704 rtnl_unlock(); 5705 return err; 5706 } 5707 5708 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 5709 { 5710 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5711 int err; 5712 struct net_device *dev = info->user_ptr[1]; 5713 struct mpath_info pinfo; 5714 struct sk_buff *msg; 5715 u8 *dst = NULL; 5716 u8 next_hop[ETH_ALEN]; 5717 5718 memset(&pinfo, 0, sizeof(pinfo)); 5719 5720 if (!info->attrs[NL80211_ATTR_MAC]) 5721 return -EINVAL; 5722 5723 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5724 5725 if (!rdev->ops->get_mpath) 5726 return -EOPNOTSUPP; 5727 5728 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5729 return -EOPNOTSUPP; 5730 5731 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 5732 if (err) 5733 return err; 5734 5735 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5736 if (!msg) 5737 return -ENOMEM; 5738 5739 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5740 dev, dst, next_hop, &pinfo) < 0) { 5741 nlmsg_free(msg); 5742 return -ENOBUFS; 5743 } 5744 5745 return genlmsg_reply(msg, info); 5746 } 5747 5748 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 5749 { 5750 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5751 struct net_device *dev = info->user_ptr[1]; 5752 u8 *dst = NULL; 5753 u8 *next_hop = NULL; 5754 5755 if (!info->attrs[NL80211_ATTR_MAC]) 5756 return -EINVAL; 5757 5758 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5759 return -EINVAL; 5760 5761 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5762 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5763 5764 if (!rdev->ops->change_mpath) 5765 return -EOPNOTSUPP; 5766 5767 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5768 return -EOPNOTSUPP; 5769 5770 return rdev_change_mpath(rdev, dev, dst, next_hop); 5771 } 5772 5773 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 5774 { 5775 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5776 struct net_device *dev = info->user_ptr[1]; 5777 u8 *dst = NULL; 5778 u8 *next_hop = NULL; 5779 5780 if (!info->attrs[NL80211_ATTR_MAC]) 5781 return -EINVAL; 5782 5783 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5784 return -EINVAL; 5785 5786 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5787 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5788 5789 if (!rdev->ops->add_mpath) 5790 return -EOPNOTSUPP; 5791 5792 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5793 return -EOPNOTSUPP; 5794 5795 return rdev_add_mpath(rdev, dev, dst, next_hop); 5796 } 5797 5798 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 5799 { 5800 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5801 struct net_device *dev = info->user_ptr[1]; 5802 u8 *dst = NULL; 5803 5804 if (info->attrs[NL80211_ATTR_MAC]) 5805 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5806 5807 if (!rdev->ops->del_mpath) 5808 return -EOPNOTSUPP; 5809 5810 return rdev_del_mpath(rdev, dev, dst); 5811 } 5812 5813 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 5814 { 5815 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5816 int err; 5817 struct net_device *dev = info->user_ptr[1]; 5818 struct mpath_info pinfo; 5819 struct sk_buff *msg; 5820 u8 *dst = NULL; 5821 u8 mpp[ETH_ALEN]; 5822 5823 memset(&pinfo, 0, sizeof(pinfo)); 5824 5825 if (!info->attrs[NL80211_ATTR_MAC]) 5826 return -EINVAL; 5827 5828 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5829 5830 if (!rdev->ops->get_mpp) 5831 return -EOPNOTSUPP; 5832 5833 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5834 return -EOPNOTSUPP; 5835 5836 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 5837 if (err) 5838 return err; 5839 5840 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5841 if (!msg) 5842 return -ENOMEM; 5843 5844 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5845 dev, dst, mpp, &pinfo) < 0) { 5846 nlmsg_free(msg); 5847 return -ENOBUFS; 5848 } 5849 5850 return genlmsg_reply(msg, info); 5851 } 5852 5853 static int nl80211_dump_mpp(struct sk_buff *skb, 5854 struct netlink_callback *cb) 5855 { 5856 struct mpath_info pinfo; 5857 struct cfg80211_registered_device *rdev; 5858 struct wireless_dev *wdev; 5859 u8 dst[ETH_ALEN]; 5860 u8 mpp[ETH_ALEN]; 5861 int path_idx = cb->args[2]; 5862 int err; 5863 5864 rtnl_lock(); 5865 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 5866 if (err) 5867 goto out_err; 5868 5869 if (!rdev->ops->dump_mpp) { 5870 err = -EOPNOTSUPP; 5871 goto out_err; 5872 } 5873 5874 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5875 err = -EOPNOTSUPP; 5876 goto out_err; 5877 } 5878 5879 while (1) { 5880 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 5881 mpp, &pinfo); 5882 if (err == -ENOENT) 5883 break; 5884 if (err) 5885 goto out_err; 5886 5887 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5888 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5889 wdev->netdev, dst, mpp, 5890 &pinfo) < 0) 5891 goto out; 5892 5893 path_idx++; 5894 } 5895 5896 out: 5897 cb->args[2] = path_idx; 5898 err = skb->len; 5899 out_err: 5900 rtnl_unlock(); 5901 return err; 5902 } 5903 5904 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 5905 { 5906 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5907 struct net_device *dev = info->user_ptr[1]; 5908 struct wireless_dev *wdev = dev->ieee80211_ptr; 5909 struct bss_parameters params; 5910 int err; 5911 5912 memset(¶ms, 0, sizeof(params)); 5913 /* default to not changing parameters */ 5914 params.use_cts_prot = -1; 5915 params.use_short_preamble = -1; 5916 params.use_short_slot_time = -1; 5917 params.ap_isolate = -1; 5918 params.ht_opmode = -1; 5919 params.p2p_ctwindow = -1; 5920 params.p2p_opp_ps = -1; 5921 5922 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 5923 params.use_cts_prot = 5924 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 5925 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 5926 params.use_short_preamble = 5927 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 5928 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 5929 params.use_short_slot_time = 5930 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 5931 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 5932 params.basic_rates = 5933 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5934 params.basic_rates_len = 5935 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5936 } 5937 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 5938 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 5939 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 5940 params.ht_opmode = 5941 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 5942 5943 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5945 return -EINVAL; 5946 params.p2p_ctwindow = 5947 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5948 if (params.p2p_ctwindow != 0 && 5949 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5950 return -EINVAL; 5951 } 5952 5953 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5954 u8 tmp; 5955 5956 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5957 return -EINVAL; 5958 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5959 params.p2p_opp_ps = tmp; 5960 if (params.p2p_opp_ps && 5961 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5962 return -EINVAL; 5963 } 5964 5965 if (!rdev->ops->change_bss) 5966 return -EOPNOTSUPP; 5967 5968 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5969 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5970 return -EOPNOTSUPP; 5971 5972 wdev_lock(wdev); 5973 err = rdev_change_bss(rdev, dev, ¶ms); 5974 wdev_unlock(wdev); 5975 5976 return err; 5977 } 5978 5979 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 5980 { 5981 char *data = NULL; 5982 bool is_indoor; 5983 enum nl80211_user_reg_hint_type user_reg_hint_type; 5984 u32 owner_nlportid; 5985 5986 /* 5987 * You should only get this when cfg80211 hasn't yet initialized 5988 * completely when built-in to the kernel right between the time 5989 * window between nl80211_init() and regulatory_init(), if that is 5990 * even possible. 5991 */ 5992 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 5993 return -EINPROGRESS; 5994 5995 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 5996 user_reg_hint_type = 5997 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 5998 else 5999 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 6000 6001 switch (user_reg_hint_type) { 6002 case NL80211_USER_REG_HINT_USER: 6003 case NL80211_USER_REG_HINT_CELL_BASE: 6004 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6005 return -EINVAL; 6006 6007 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6008 return regulatory_hint_user(data, user_reg_hint_type); 6009 case NL80211_USER_REG_HINT_INDOOR: 6010 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 6011 owner_nlportid = info->snd_portid; 6012 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 6013 } else { 6014 owner_nlportid = 0; 6015 is_indoor = true; 6016 } 6017 6018 return regulatory_hint_indoor(is_indoor, owner_nlportid); 6019 default: 6020 return -EINVAL; 6021 } 6022 } 6023 6024 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info) 6025 { 6026 return reg_reload_regdb(); 6027 } 6028 6029 static int nl80211_get_mesh_config(struct sk_buff *skb, 6030 struct genl_info *info) 6031 { 6032 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6033 struct net_device *dev = info->user_ptr[1]; 6034 struct wireless_dev *wdev = dev->ieee80211_ptr; 6035 struct mesh_config cur_params; 6036 int err = 0; 6037 void *hdr; 6038 struct nlattr *pinfoattr; 6039 struct sk_buff *msg; 6040 6041 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6042 return -EOPNOTSUPP; 6043 6044 if (!rdev->ops->get_mesh_config) 6045 return -EOPNOTSUPP; 6046 6047 wdev_lock(wdev); 6048 /* If not connected, get default parameters */ 6049 if (!wdev->mesh_id_len) 6050 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 6051 else 6052 err = rdev_get_mesh_config(rdev, dev, &cur_params); 6053 wdev_unlock(wdev); 6054 6055 if (err) 6056 return err; 6057 6058 /* Draw up a netlink message to send back */ 6059 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6060 if (!msg) 6061 return -ENOMEM; 6062 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6063 NL80211_CMD_GET_MESH_CONFIG); 6064 if (!hdr) 6065 goto out; 6066 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 6067 if (!pinfoattr) 6068 goto nla_put_failure; 6069 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 6070 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 6071 cur_params.dot11MeshRetryTimeout) || 6072 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 6073 cur_params.dot11MeshConfirmTimeout) || 6074 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 6075 cur_params.dot11MeshHoldingTimeout) || 6076 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 6077 cur_params.dot11MeshMaxPeerLinks) || 6078 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 6079 cur_params.dot11MeshMaxRetries) || 6080 nla_put_u8(msg, NL80211_MESHCONF_TTL, 6081 cur_params.dot11MeshTTL) || 6082 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 6083 cur_params.element_ttl) || 6084 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 6085 cur_params.auto_open_plinks) || 6086 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 6087 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 6088 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 6089 cur_params.dot11MeshHWMPmaxPREQretries) || 6090 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 6091 cur_params.path_refresh_time) || 6092 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 6093 cur_params.min_discovery_timeout) || 6094 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 6095 cur_params.dot11MeshHWMPactivePathTimeout) || 6096 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 6097 cur_params.dot11MeshHWMPpreqMinInterval) || 6098 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 6099 cur_params.dot11MeshHWMPperrMinInterval) || 6100 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 6101 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 6102 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 6103 cur_params.dot11MeshHWMPRootMode) || 6104 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 6105 cur_params.dot11MeshHWMPRannInterval) || 6106 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 6107 cur_params.dot11MeshGateAnnouncementProtocol) || 6108 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 6109 cur_params.dot11MeshForwarding) || 6110 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 6111 cur_params.rssi_threshold) || 6112 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 6113 cur_params.ht_opmode) || 6114 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6115 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 6116 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6117 cur_params.dot11MeshHWMProotInterval) || 6118 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6119 cur_params.dot11MeshHWMPconfirmationInterval) || 6120 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 6121 cur_params.power_mode) || 6122 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 6123 cur_params.dot11MeshAwakeWindowDuration) || 6124 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 6125 cur_params.plink_timeout)) 6126 goto nla_put_failure; 6127 nla_nest_end(msg, pinfoattr); 6128 genlmsg_end(msg, hdr); 6129 return genlmsg_reply(msg, info); 6130 6131 nla_put_failure: 6132 out: 6133 nlmsg_free(msg); 6134 return -ENOBUFS; 6135 } 6136 6137 static const struct nla_policy 6138 nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 6139 [NL80211_MESHCONF_RETRY_TIMEOUT] = 6140 NLA_POLICY_RANGE(NLA_U16, 1, 255), 6141 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = 6142 NLA_POLICY_RANGE(NLA_U16, 1, 255), 6143 [NL80211_MESHCONF_HOLDING_TIMEOUT] = 6144 NLA_POLICY_RANGE(NLA_U16, 1, 255), 6145 [NL80211_MESHCONF_MAX_PEER_LINKS] = 6146 NLA_POLICY_RANGE(NLA_U16, 0, 255), 6147 [NL80211_MESHCONF_MAX_RETRIES] = NLA_POLICY_MAX(NLA_U8, 16), 6148 [NL80211_MESHCONF_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 6149 [NL80211_MESHCONF_ELEMENT_TTL] = NLA_POLICY_MIN(NLA_U8, 1), 6150 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = NLA_POLICY_MAX(NLA_U8, 1), 6151 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = 6152 NLA_POLICY_RANGE(NLA_U32, 1, 255), 6153 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 6154 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 6155 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = NLA_POLICY_MIN(NLA_U16, 1), 6156 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 6157 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = 6158 NLA_POLICY_MIN(NLA_U16, 1), 6159 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = 6160 NLA_POLICY_MIN(NLA_U16, 1), 6161 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = 6162 NLA_POLICY_MIN(NLA_U16, 1), 6163 [NL80211_MESHCONF_HWMP_ROOTMODE] = NLA_POLICY_MAX(NLA_U8, 4), 6164 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = 6165 NLA_POLICY_MIN(NLA_U16, 1), 6166 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = NLA_POLICY_MAX(NLA_U8, 1), 6167 [NL80211_MESHCONF_FORWARDING] = NLA_POLICY_MAX(NLA_U8, 1), 6168 [NL80211_MESHCONF_RSSI_THRESHOLD] = 6169 NLA_POLICY_RANGE(NLA_S32, -255, 0), 6170 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 6171 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 6172 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = 6173 NLA_POLICY_MIN(NLA_U16, 1), 6174 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = 6175 NLA_POLICY_MIN(NLA_U16, 1), 6176 [NL80211_MESHCONF_POWER_MODE] = 6177 NLA_POLICY_RANGE(NLA_U32, 6178 NL80211_MESH_POWER_ACTIVE, 6179 NL80211_MESH_POWER_MAX), 6180 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 6181 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 6182 }; 6183 6184 static const struct nla_policy 6185 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 6186 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 6187 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 6188 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 6189 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 6190 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 6191 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 6192 [NL80211_MESH_SETUP_IE] = 6193 NLA_POLICY_VALIDATE_FN(NLA_BINARY, validate_ie_attr, 6194 IEEE80211_MAX_DATA_LEN), 6195 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 6196 }; 6197 6198 static int nl80211_parse_mesh_config(struct genl_info *info, 6199 struct mesh_config *cfg, 6200 u32 *mask_out) 6201 { 6202 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 6203 u32 mask = 0; 6204 u16 ht_opmode; 6205 6206 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, mask, attr, fn) \ 6207 do { \ 6208 if (tb[attr]) { \ 6209 cfg->param = fn(tb[attr]); \ 6210 mask |= BIT((attr) - 1); \ 6211 } \ 6212 } while (0) 6213 6214 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 6215 return -EINVAL; 6216 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 6217 info->attrs[NL80211_ATTR_MESH_CONFIG], 6218 nl80211_meshconf_params_policy, info->extack)) 6219 return -EINVAL; 6220 6221 /* This makes sure that there aren't more than 32 mesh config 6222 * parameters (otherwise our bitfield scheme would not work.) */ 6223 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 6224 6225 /* Fill in the params struct */ 6226 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, mask, 6227 NL80211_MESHCONF_RETRY_TIMEOUT, nla_get_u16); 6228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, mask, 6229 NL80211_MESHCONF_CONFIRM_TIMEOUT, 6230 nla_get_u16); 6231 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, mask, 6232 NL80211_MESHCONF_HOLDING_TIMEOUT, 6233 nla_get_u16); 6234 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, mask, 6235 NL80211_MESHCONF_MAX_PEER_LINKS, 6236 nla_get_u16); 6237 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, mask, 6238 NL80211_MESHCONF_MAX_RETRIES, nla_get_u8); 6239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, mask, 6240 NL80211_MESHCONF_TTL, nla_get_u8); 6241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, mask, 6242 NL80211_MESHCONF_ELEMENT_TTL, nla_get_u8); 6243 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, mask, 6244 NL80211_MESHCONF_AUTO_OPEN_PLINKS, 6245 nla_get_u8); 6246 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 6247 mask, 6248 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 6249 nla_get_u32); 6250 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, mask, 6251 NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 6252 nla_get_u8); 6253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, mask, 6254 NL80211_MESHCONF_PATH_REFRESH_TIME, 6255 nla_get_u32); 6256 if (mask & BIT(NL80211_MESHCONF_PATH_REFRESH_TIME) && 6257 (cfg->path_refresh_time < 1 || cfg->path_refresh_time > 65535)) 6258 return -EINVAL; 6259 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, mask, 6260 NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 6261 nla_get_u16); 6262 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 6263 mask, 6264 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 6265 nla_get_u32); 6266 if (mask & BIT(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT) && 6267 (cfg->dot11MeshHWMPactivePathTimeout < 1 || 6268 cfg->dot11MeshHWMPactivePathTimeout > 65535)) 6269 return -EINVAL; 6270 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, mask, 6271 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 6272 nla_get_u16); 6273 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, mask, 6274 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 6275 nla_get_u16); 6276 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6277 dot11MeshHWMPnetDiameterTraversalTime, mask, 6278 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 6279 nla_get_u16); 6280 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, mask, 6281 NL80211_MESHCONF_HWMP_ROOTMODE, nla_get_u8); 6282 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, mask, 6283 NL80211_MESHCONF_HWMP_RANN_INTERVAL, 6284 nla_get_u16); 6285 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshGateAnnouncementProtocol, 6286 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 6287 nla_get_u8); 6288 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, mask, 6289 NL80211_MESHCONF_FORWARDING, nla_get_u8); 6290 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, mask, 6291 NL80211_MESHCONF_RSSI_THRESHOLD, 6292 nla_get_s32); 6293 /* 6294 * Check HT operation mode based on 6295 * IEEE 802.11-2016 9.4.2.57 HT Operation element. 6296 */ 6297 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 6298 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 6299 6300 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 6301 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 6302 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6303 return -EINVAL; 6304 6305 /* NON_HT_STA bit is reserved, but some programs set it */ 6306 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT; 6307 6308 cfg->ht_opmode = ht_opmode; 6309 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 6310 } 6311 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6312 dot11MeshHWMPactivePathToRootTimeout, mask, 6313 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6314 nla_get_u32); 6315 if (mask & BIT(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT) && 6316 (cfg->dot11MeshHWMPactivePathToRootTimeout < 1 || 6317 cfg->dot11MeshHWMPactivePathToRootTimeout > 65535)) 6318 return -EINVAL; 6319 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, mask, 6320 NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6321 nla_get_u16); 6322 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPconfirmationInterval, 6323 mask, 6324 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6325 nla_get_u16); 6326 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, mask, 6327 NL80211_MESHCONF_POWER_MODE, nla_get_u32); 6328 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, mask, 6329 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 6330 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, mask, 6331 NL80211_MESHCONF_PLINK_TIMEOUT, nla_get_u32); 6332 if (mask_out) 6333 *mask_out = mask; 6334 6335 return 0; 6336 6337 #undef FILL_IN_MESH_PARAM_IF_SET 6338 } 6339 6340 static int nl80211_parse_mesh_setup(struct genl_info *info, 6341 struct mesh_setup *setup) 6342 { 6343 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6344 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 6345 6346 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 6347 return -EINVAL; 6348 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 6349 info->attrs[NL80211_ATTR_MESH_SETUP], 6350 nl80211_mesh_setup_params_policy, info->extack)) 6351 return -EINVAL; 6352 6353 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 6354 setup->sync_method = 6355 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 6356 IEEE80211_SYNC_METHOD_VENDOR : 6357 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 6358 6359 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 6360 setup->path_sel_proto = 6361 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 6362 IEEE80211_PATH_PROTOCOL_VENDOR : 6363 IEEE80211_PATH_PROTOCOL_HWMP; 6364 6365 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 6366 setup->path_metric = 6367 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 6368 IEEE80211_PATH_METRIC_VENDOR : 6369 IEEE80211_PATH_METRIC_AIRTIME; 6370 6371 if (tb[NL80211_MESH_SETUP_IE]) { 6372 struct nlattr *ieattr = 6373 tb[NL80211_MESH_SETUP_IE]; 6374 setup->ie = nla_data(ieattr); 6375 setup->ie_len = nla_len(ieattr); 6376 } 6377 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 6378 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 6379 return -EINVAL; 6380 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 6381 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 6382 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 6383 if (setup->is_secure) 6384 setup->user_mpm = true; 6385 6386 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 6387 if (!setup->user_mpm) 6388 return -EINVAL; 6389 setup->auth_id = 6390 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 6391 } 6392 6393 return 0; 6394 } 6395 6396 static int nl80211_update_mesh_config(struct sk_buff *skb, 6397 struct genl_info *info) 6398 { 6399 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6400 struct net_device *dev = info->user_ptr[1]; 6401 struct wireless_dev *wdev = dev->ieee80211_ptr; 6402 struct mesh_config cfg; 6403 u32 mask; 6404 int err; 6405 6406 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6407 return -EOPNOTSUPP; 6408 6409 if (!rdev->ops->update_mesh_config) 6410 return -EOPNOTSUPP; 6411 6412 err = nl80211_parse_mesh_config(info, &cfg, &mask); 6413 if (err) 6414 return err; 6415 6416 wdev_lock(wdev); 6417 if (!wdev->mesh_id_len) 6418 err = -ENOLINK; 6419 6420 if (!err) 6421 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 6422 6423 wdev_unlock(wdev); 6424 6425 return err; 6426 } 6427 6428 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 6429 struct sk_buff *msg) 6430 { 6431 struct nlattr *nl_reg_rules; 6432 unsigned int i; 6433 6434 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 6435 (regdom->dfs_region && 6436 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 6437 goto nla_put_failure; 6438 6439 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 6440 if (!nl_reg_rules) 6441 goto nla_put_failure; 6442 6443 for (i = 0; i < regdom->n_reg_rules; i++) { 6444 struct nlattr *nl_reg_rule; 6445 const struct ieee80211_reg_rule *reg_rule; 6446 const struct ieee80211_freq_range *freq_range; 6447 const struct ieee80211_power_rule *power_rule; 6448 unsigned int max_bandwidth_khz; 6449 6450 reg_rule = ®dom->reg_rules[i]; 6451 freq_range = ®_rule->freq_range; 6452 power_rule = ®_rule->power_rule; 6453 6454 nl_reg_rule = nla_nest_start(msg, i); 6455 if (!nl_reg_rule) 6456 goto nla_put_failure; 6457 6458 max_bandwidth_khz = freq_range->max_bandwidth_khz; 6459 if (!max_bandwidth_khz) 6460 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 6461 reg_rule); 6462 6463 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 6464 reg_rule->flags) || 6465 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 6466 freq_range->start_freq_khz) || 6467 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 6468 freq_range->end_freq_khz) || 6469 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 6470 max_bandwidth_khz) || 6471 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 6472 power_rule->max_antenna_gain) || 6473 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 6474 power_rule->max_eirp) || 6475 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 6476 reg_rule->dfs_cac_ms)) 6477 goto nla_put_failure; 6478 6479 nla_nest_end(msg, nl_reg_rule); 6480 } 6481 6482 nla_nest_end(msg, nl_reg_rules); 6483 return 0; 6484 6485 nla_put_failure: 6486 return -EMSGSIZE; 6487 } 6488 6489 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 6490 { 6491 const struct ieee80211_regdomain *regdom = NULL; 6492 struct cfg80211_registered_device *rdev; 6493 struct wiphy *wiphy = NULL; 6494 struct sk_buff *msg; 6495 void *hdr; 6496 6497 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6498 if (!msg) 6499 return -ENOBUFS; 6500 6501 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6502 NL80211_CMD_GET_REG); 6503 if (!hdr) 6504 goto put_failure; 6505 6506 if (info->attrs[NL80211_ATTR_WIPHY]) { 6507 bool self_managed; 6508 6509 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 6510 if (IS_ERR(rdev)) { 6511 nlmsg_free(msg); 6512 return PTR_ERR(rdev); 6513 } 6514 6515 wiphy = &rdev->wiphy; 6516 self_managed = wiphy->regulatory_flags & 6517 REGULATORY_WIPHY_SELF_MANAGED; 6518 regdom = get_wiphy_regdom(wiphy); 6519 6520 /* a self-managed-reg device must have a private regdom */ 6521 if (WARN_ON(!regdom && self_managed)) { 6522 nlmsg_free(msg); 6523 return -EINVAL; 6524 } 6525 6526 if (regdom && 6527 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6528 goto nla_put_failure; 6529 } 6530 6531 if (!wiphy && reg_last_request_cell_base() && 6532 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6533 NL80211_USER_REG_HINT_CELL_BASE)) 6534 goto nla_put_failure; 6535 6536 rcu_read_lock(); 6537 6538 if (!regdom) 6539 regdom = rcu_dereference(cfg80211_regdomain); 6540 6541 if (nl80211_put_regdom(regdom, msg)) 6542 goto nla_put_failure_rcu; 6543 6544 rcu_read_unlock(); 6545 6546 genlmsg_end(msg, hdr); 6547 return genlmsg_reply(msg, info); 6548 6549 nla_put_failure_rcu: 6550 rcu_read_unlock(); 6551 nla_put_failure: 6552 put_failure: 6553 nlmsg_free(msg); 6554 return -EMSGSIZE; 6555 } 6556 6557 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 6558 u32 seq, int flags, struct wiphy *wiphy, 6559 const struct ieee80211_regdomain *regdom) 6560 { 6561 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6562 NL80211_CMD_GET_REG); 6563 6564 if (!hdr) 6565 return -1; 6566 6567 genl_dump_check_consistent(cb, hdr); 6568 6569 if (nl80211_put_regdom(regdom, msg)) 6570 goto nla_put_failure; 6571 6572 if (!wiphy && reg_last_request_cell_base() && 6573 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6574 NL80211_USER_REG_HINT_CELL_BASE)) 6575 goto nla_put_failure; 6576 6577 if (wiphy && 6578 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6579 goto nla_put_failure; 6580 6581 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 6582 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 6583 goto nla_put_failure; 6584 6585 genlmsg_end(msg, hdr); 6586 return 0; 6587 6588 nla_put_failure: 6589 genlmsg_cancel(msg, hdr); 6590 return -EMSGSIZE; 6591 } 6592 6593 static int nl80211_get_reg_dump(struct sk_buff *skb, 6594 struct netlink_callback *cb) 6595 { 6596 const struct ieee80211_regdomain *regdom = NULL; 6597 struct cfg80211_registered_device *rdev; 6598 int err, reg_idx, start = cb->args[2]; 6599 6600 rtnl_lock(); 6601 6602 if (cfg80211_regdomain && start == 0) { 6603 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6604 NLM_F_MULTI, NULL, 6605 rtnl_dereference(cfg80211_regdomain)); 6606 if (err < 0) 6607 goto out_err; 6608 } 6609 6610 /* the global regdom is idx 0 */ 6611 reg_idx = 1; 6612 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 6613 regdom = get_wiphy_regdom(&rdev->wiphy); 6614 if (!regdom) 6615 continue; 6616 6617 if (++reg_idx <= start) 6618 continue; 6619 6620 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6621 NLM_F_MULTI, &rdev->wiphy, regdom); 6622 if (err < 0) { 6623 reg_idx--; 6624 break; 6625 } 6626 } 6627 6628 cb->args[2] = reg_idx; 6629 err = skb->len; 6630 out_err: 6631 rtnl_unlock(); 6632 return err; 6633 } 6634 6635 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 6636 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 6637 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 6638 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 6639 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 6640 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 6641 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 6642 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 6643 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 6644 }; 6645 6646 static int parse_reg_rule(struct nlattr *tb[], 6647 struct ieee80211_reg_rule *reg_rule) 6648 { 6649 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 6650 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 6651 6652 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 6653 return -EINVAL; 6654 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 6655 return -EINVAL; 6656 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 6657 return -EINVAL; 6658 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 6659 return -EINVAL; 6660 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 6661 return -EINVAL; 6662 6663 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 6664 6665 freq_range->start_freq_khz = 6666 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 6667 freq_range->end_freq_khz = 6668 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 6669 freq_range->max_bandwidth_khz = 6670 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 6671 6672 power_rule->max_eirp = 6673 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 6674 6675 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 6676 power_rule->max_antenna_gain = 6677 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 6678 6679 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 6680 reg_rule->dfs_cac_ms = 6681 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 6682 6683 return 0; 6684 } 6685 6686 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 6687 { 6688 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 6689 struct nlattr *nl_reg_rule; 6690 char *alpha2; 6691 int rem_reg_rules, r; 6692 u32 num_rules = 0, rule_idx = 0, size_of_regd; 6693 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 6694 struct ieee80211_regdomain *rd; 6695 6696 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6697 return -EINVAL; 6698 6699 if (!info->attrs[NL80211_ATTR_REG_RULES]) 6700 return -EINVAL; 6701 6702 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6703 6704 if (info->attrs[NL80211_ATTR_DFS_REGION]) 6705 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 6706 6707 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6708 rem_reg_rules) { 6709 num_rules++; 6710 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 6711 return -EINVAL; 6712 } 6713 6714 if (!reg_is_valid_request(alpha2)) 6715 return -EINVAL; 6716 6717 size_of_regd = sizeof(struct ieee80211_regdomain) + 6718 num_rules * sizeof(struct ieee80211_reg_rule); 6719 6720 rd = kzalloc(size_of_regd, GFP_KERNEL); 6721 if (!rd) 6722 return -ENOMEM; 6723 6724 rd->n_reg_rules = num_rules; 6725 rd->alpha2[0] = alpha2[0]; 6726 rd->alpha2[1] = alpha2[1]; 6727 6728 /* 6729 * Disable DFS master mode if the DFS region was 6730 * not supported or known on this kernel. 6731 */ 6732 if (reg_supported_dfs_region(dfs_region)) 6733 rd->dfs_region = dfs_region; 6734 6735 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6736 rem_reg_rules) { 6737 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX, 6738 nl_reg_rule, reg_rule_policy, 6739 info->extack); 6740 if (r) 6741 goto bad_reg; 6742 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 6743 if (r) 6744 goto bad_reg; 6745 6746 rule_idx++; 6747 6748 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 6749 r = -EINVAL; 6750 goto bad_reg; 6751 } 6752 } 6753 6754 /* set_regdom takes ownership of rd */ 6755 return set_regdom(rd, REGD_SOURCE_CRDA); 6756 bad_reg: 6757 kfree(rd); 6758 return r; 6759 } 6760 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 6761 6762 static int validate_scan_freqs(struct nlattr *freqs) 6763 { 6764 struct nlattr *attr1, *attr2; 6765 int n_channels = 0, tmp1, tmp2; 6766 6767 nla_for_each_nested(attr1, freqs, tmp1) 6768 if (nla_len(attr1) != sizeof(u32)) 6769 return 0; 6770 6771 nla_for_each_nested(attr1, freqs, tmp1) { 6772 n_channels++; 6773 /* 6774 * Some hardware has a limited channel list for 6775 * scanning, and it is pretty much nonsensical 6776 * to scan for a channel twice, so disallow that 6777 * and don't require drivers to check that the 6778 * channel list they get isn't longer than what 6779 * they can scan, as long as they can scan all 6780 * the channels they registered at once. 6781 */ 6782 nla_for_each_nested(attr2, freqs, tmp2) 6783 if (attr1 != attr2 && 6784 nla_get_u32(attr1) == nla_get_u32(attr2)) 6785 return 0; 6786 } 6787 6788 return n_channels; 6789 } 6790 6791 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 6792 { 6793 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 6794 } 6795 6796 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 6797 struct cfg80211_bss_selection *bss_select) 6798 { 6799 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 6800 struct nlattr *nest; 6801 int err; 6802 bool found = false; 6803 int i; 6804 6805 /* only process one nested attribute */ 6806 nest = nla_data(nla); 6807 if (!nla_ok(nest, nla_len(nest))) 6808 return -EINVAL; 6809 6810 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest, 6811 nl80211_bss_select_policy, NULL); 6812 if (err) 6813 return err; 6814 6815 /* only one attribute may be given */ 6816 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 6817 if (attr[i]) { 6818 if (found) 6819 return -EINVAL; 6820 found = true; 6821 } 6822 } 6823 6824 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 6825 6826 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 6827 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 6828 6829 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 6830 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 6831 bss_select->param.band_pref = 6832 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6833 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6834 return -EINVAL; 6835 } 6836 6837 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6838 struct nl80211_bss_select_rssi_adjust *adj_param; 6839 6840 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6841 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6842 bss_select->param.adjust.band = adj_param->band; 6843 bss_select->param.adjust.delta = adj_param->delta; 6844 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6845 return -EINVAL; 6846 } 6847 6848 /* user-space did not provide behaviour attribute */ 6849 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6850 return -EINVAL; 6851 6852 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6853 return -EINVAL; 6854 6855 return 0; 6856 } 6857 6858 static int nl80211_parse_random_mac(struct nlattr **attrs, 6859 u8 *mac_addr, u8 *mac_addr_mask) 6860 { 6861 int i; 6862 6863 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6864 eth_zero_addr(mac_addr); 6865 eth_zero_addr(mac_addr_mask); 6866 mac_addr[0] = 0x2; 6867 mac_addr_mask[0] = 0x3; 6868 6869 return 0; 6870 } 6871 6872 /* need both or none */ 6873 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6874 return -EINVAL; 6875 6876 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6877 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6878 6879 /* don't allow or configure an mcast address */ 6880 if (!is_multicast_ether_addr(mac_addr_mask) || 6881 is_multicast_ether_addr(mac_addr)) 6882 return -EINVAL; 6883 6884 /* 6885 * allow users to pass a MAC address that has bits set outside 6886 * of the mask, but don't bother drivers with having to deal 6887 * with such bits 6888 */ 6889 for (i = 0; i < ETH_ALEN; i++) 6890 mac_addr[i] &= mac_addr_mask[i]; 6891 6892 return 0; 6893 } 6894 6895 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev) 6896 { 6897 ASSERT_WDEV_LOCK(wdev); 6898 6899 if (!cfg80211_beaconing_iface_active(wdev)) 6900 return true; 6901 6902 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR)) 6903 return true; 6904 6905 return regulatory_pre_cac_allowed(wdev->wiphy); 6906 } 6907 6908 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag, 6909 enum nl80211_ext_feature_index feat) 6910 { 6911 if (!(flags & flag)) 6912 return true; 6913 if (wiphy_ext_feature_isset(wiphy, feat)) 6914 return true; 6915 return false; 6916 } 6917 6918 static int 6919 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, 6920 void *request, struct nlattr **attrs, 6921 bool is_sched_scan) 6922 { 6923 u8 *mac_addr, *mac_addr_mask; 6924 u32 *flags; 6925 enum nl80211_feature_flags randomness_flag; 6926 6927 if (!attrs[NL80211_ATTR_SCAN_FLAGS]) 6928 return 0; 6929 6930 if (is_sched_scan) { 6931 struct cfg80211_sched_scan_request *req = request; 6932 6933 randomness_flag = wdev ? 6934 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR : 6935 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6936 flags = &req->flags; 6937 mac_addr = req->mac_addr; 6938 mac_addr_mask = req->mac_addr_mask; 6939 } else { 6940 struct cfg80211_scan_request *req = request; 6941 6942 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 6943 flags = &req->flags; 6944 mac_addr = req->mac_addr; 6945 mac_addr_mask = req->mac_addr_mask; 6946 } 6947 6948 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); 6949 6950 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6951 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 6952 !nl80211_check_scan_feat(wiphy, *flags, 6953 NL80211_SCAN_FLAG_LOW_SPAN, 6954 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) || 6955 !nl80211_check_scan_feat(wiphy, *flags, 6956 NL80211_SCAN_FLAG_LOW_POWER, 6957 NL80211_EXT_FEATURE_LOW_POWER_SCAN) || 6958 !nl80211_check_scan_feat(wiphy, *flags, 6959 NL80211_SCAN_FLAG_HIGH_ACCURACY, 6960 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) || 6961 !nl80211_check_scan_feat(wiphy, *flags, 6962 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME, 6963 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) || 6964 !nl80211_check_scan_feat(wiphy, *flags, 6965 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP, 6966 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) || 6967 !nl80211_check_scan_feat(wiphy, *flags, 6968 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION, 6969 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) || 6970 !nl80211_check_scan_feat(wiphy, *flags, 6971 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE, 6972 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) || 6973 !nl80211_check_scan_feat(wiphy, *flags, 6974 NL80211_SCAN_FLAG_RANDOM_SN, 6975 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) || 6976 !nl80211_check_scan_feat(wiphy, *flags, 6977 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT, 6978 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT)) 6979 return -EOPNOTSUPP; 6980 6981 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6982 int err; 6983 6984 if (!(wiphy->features & randomness_flag) || 6985 (wdev && wdev->current_bss)) 6986 return -EOPNOTSUPP; 6987 6988 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask); 6989 if (err) 6990 return err; 6991 } 6992 6993 return 0; 6994 } 6995 6996 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 6997 { 6998 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6999 struct wireless_dev *wdev = info->user_ptr[1]; 7000 struct cfg80211_scan_request *request; 7001 struct nlattr *attr; 7002 struct wiphy *wiphy; 7003 int err, tmp, n_ssids = 0, n_channels, i; 7004 size_t ie_len; 7005 7006 wiphy = &rdev->wiphy; 7007 7008 if (wdev->iftype == NL80211_IFTYPE_NAN) 7009 return -EOPNOTSUPP; 7010 7011 if (!rdev->ops->scan) 7012 return -EOPNOTSUPP; 7013 7014 if (rdev->scan_req || rdev->scan_msg) { 7015 err = -EBUSY; 7016 goto unlock; 7017 } 7018 7019 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7020 n_channels = validate_scan_freqs( 7021 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7022 if (!n_channels) { 7023 err = -EINVAL; 7024 goto unlock; 7025 } 7026 } else { 7027 n_channels = ieee80211_get_num_supported_channels(wiphy); 7028 } 7029 7030 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 7031 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 7032 n_ssids++; 7033 7034 if (n_ssids > wiphy->max_scan_ssids) { 7035 err = -EINVAL; 7036 goto unlock; 7037 } 7038 7039 if (info->attrs[NL80211_ATTR_IE]) 7040 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7041 else 7042 ie_len = 0; 7043 7044 if (ie_len > wiphy->max_scan_ie_len) { 7045 err = -EINVAL; 7046 goto unlock; 7047 } 7048 7049 request = kzalloc(sizeof(*request) 7050 + sizeof(*request->ssids) * n_ssids 7051 + sizeof(*request->channels) * n_channels 7052 + ie_len, GFP_KERNEL); 7053 if (!request) { 7054 err = -ENOMEM; 7055 goto unlock; 7056 } 7057 7058 if (n_ssids) 7059 request->ssids = (void *)&request->channels[n_channels]; 7060 request->n_ssids = n_ssids; 7061 if (ie_len) { 7062 if (n_ssids) 7063 request->ie = (void *)(request->ssids + n_ssids); 7064 else 7065 request->ie = (void *)(request->channels + n_channels); 7066 } 7067 7068 i = 0; 7069 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7070 /* user specified, bail out if channel not found */ 7071 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 7072 struct ieee80211_channel *chan; 7073 7074 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7075 7076 if (!chan) { 7077 err = -EINVAL; 7078 goto out_free; 7079 } 7080 7081 /* ignore disabled channels */ 7082 if (chan->flags & IEEE80211_CHAN_DISABLED) 7083 continue; 7084 7085 request->channels[i] = chan; 7086 i++; 7087 } 7088 } else { 7089 enum nl80211_band band; 7090 7091 /* all channels */ 7092 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7093 int j; 7094 7095 if (!wiphy->bands[band]) 7096 continue; 7097 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7098 struct ieee80211_channel *chan; 7099 7100 chan = &wiphy->bands[band]->channels[j]; 7101 7102 if (chan->flags & IEEE80211_CHAN_DISABLED) 7103 continue; 7104 7105 request->channels[i] = chan; 7106 i++; 7107 } 7108 } 7109 } 7110 7111 if (!i) { 7112 err = -EINVAL; 7113 goto out_free; 7114 } 7115 7116 request->n_channels = i; 7117 7118 wdev_lock(wdev); 7119 if (!cfg80211_off_channel_oper_allowed(wdev)) { 7120 struct ieee80211_channel *chan; 7121 7122 if (request->n_channels != 1) { 7123 wdev_unlock(wdev); 7124 err = -EBUSY; 7125 goto out_free; 7126 } 7127 7128 chan = request->channels[0]; 7129 if (chan->center_freq != wdev->chandef.chan->center_freq) { 7130 wdev_unlock(wdev); 7131 err = -EBUSY; 7132 goto out_free; 7133 } 7134 } 7135 wdev_unlock(wdev); 7136 7137 i = 0; 7138 if (n_ssids) { 7139 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 7140 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7141 err = -EINVAL; 7142 goto out_free; 7143 } 7144 request->ssids[i].ssid_len = nla_len(attr); 7145 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 7146 i++; 7147 } 7148 } 7149 7150 if (info->attrs[NL80211_ATTR_IE]) { 7151 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7152 memcpy((void *)request->ie, 7153 nla_data(info->attrs[NL80211_ATTR_IE]), 7154 request->ie_len); 7155 } 7156 7157 for (i = 0; i < NUM_NL80211_BANDS; i++) 7158 if (wiphy->bands[i]) 7159 request->rates[i] = 7160 (1 << wiphy->bands[i]->n_bitrates) - 1; 7161 7162 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 7163 nla_for_each_nested(attr, 7164 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 7165 tmp) { 7166 enum nl80211_band band = nla_type(attr); 7167 7168 if (band < 0 || band >= NUM_NL80211_BANDS) { 7169 err = -EINVAL; 7170 goto out_free; 7171 } 7172 7173 if (!wiphy->bands[band]) 7174 continue; 7175 7176 err = ieee80211_get_ratemask(wiphy->bands[band], 7177 nla_data(attr), 7178 nla_len(attr), 7179 &request->rates[band]); 7180 if (err) 7181 goto out_free; 7182 } 7183 } 7184 7185 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 7186 if (!wiphy_ext_feature_isset(wiphy, 7187 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 7188 err = -EOPNOTSUPP; 7189 goto out_free; 7190 } 7191 7192 request->duration = 7193 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 7194 request->duration_mandatory = 7195 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 7196 } 7197 7198 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs, 7199 false); 7200 if (err) 7201 goto out_free; 7202 7203 request->no_cck = 7204 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7205 7206 /* Initial implementation used NL80211_ATTR_MAC to set the specific 7207 * BSSID to scan for. This was problematic because that same attribute 7208 * was already used for another purpose (local random MAC address). The 7209 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 7210 * compatibility with older userspace components, also use the 7211 * NL80211_ATTR_MAC value here if it can be determined to be used for 7212 * the specific BSSID use case instead of the random MAC address 7213 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 7214 */ 7215 if (info->attrs[NL80211_ATTR_BSSID]) 7216 memcpy(request->bssid, 7217 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 7218 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 7219 info->attrs[NL80211_ATTR_MAC]) 7220 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 7221 ETH_ALEN); 7222 else 7223 eth_broadcast_addr(request->bssid); 7224 7225 request->wdev = wdev; 7226 request->wiphy = &rdev->wiphy; 7227 request->scan_start = jiffies; 7228 7229 rdev->scan_req = request; 7230 err = rdev_scan(rdev, request); 7231 7232 if (!err) { 7233 nl80211_send_scan_start(rdev, wdev); 7234 if (wdev->netdev) 7235 dev_hold(wdev->netdev); 7236 } else { 7237 out_free: 7238 rdev->scan_req = NULL; 7239 kfree(request); 7240 } 7241 7242 unlock: 7243 return err; 7244 } 7245 7246 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 7247 { 7248 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7249 struct wireless_dev *wdev = info->user_ptr[1]; 7250 7251 if (!rdev->ops->abort_scan) 7252 return -EOPNOTSUPP; 7253 7254 if (rdev->scan_msg) 7255 return 0; 7256 7257 if (!rdev->scan_req) 7258 return -ENOENT; 7259 7260 rdev_abort_scan(rdev, wdev); 7261 return 0; 7262 } 7263 7264 static int 7265 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 7266 struct cfg80211_sched_scan_request *request, 7267 struct nlattr **attrs) 7268 { 7269 int tmp, err, i = 0; 7270 struct nlattr *attr; 7271 7272 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7273 u32 interval; 7274 7275 /* 7276 * If scan plans are not specified, 7277 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 7278 * case one scan plan will be set with the specified scan 7279 * interval and infinite number of iterations. 7280 */ 7281 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 7282 if (!interval) 7283 return -EINVAL; 7284 7285 request->scan_plans[0].interval = 7286 DIV_ROUND_UP(interval, MSEC_PER_SEC); 7287 if (!request->scan_plans[0].interval) 7288 return -EINVAL; 7289 7290 if (request->scan_plans[0].interval > 7291 wiphy->max_sched_scan_plan_interval) 7292 request->scan_plans[0].interval = 7293 wiphy->max_sched_scan_plan_interval; 7294 7295 return 0; 7296 } 7297 7298 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 7299 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 7300 7301 if (WARN_ON(i >= n_plans)) 7302 return -EINVAL; 7303 7304 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX, 7305 attr, nl80211_plan_policy, NULL); 7306 if (err) 7307 return err; 7308 7309 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 7310 return -EINVAL; 7311 7312 request->scan_plans[i].interval = 7313 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 7314 if (!request->scan_plans[i].interval || 7315 request->scan_plans[i].interval > 7316 wiphy->max_sched_scan_plan_interval) 7317 return -EINVAL; 7318 7319 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 7320 request->scan_plans[i].iterations = 7321 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 7322 if (!request->scan_plans[i].iterations || 7323 (request->scan_plans[i].iterations > 7324 wiphy->max_sched_scan_plan_iterations)) 7325 return -EINVAL; 7326 } else if (i < n_plans - 1) { 7327 /* 7328 * All scan plans but the last one must specify 7329 * a finite number of iterations 7330 */ 7331 return -EINVAL; 7332 } 7333 7334 i++; 7335 } 7336 7337 /* 7338 * The last scan plan must not specify the number of 7339 * iterations, it is supposed to run infinitely 7340 */ 7341 if (request->scan_plans[n_plans - 1].iterations) 7342 return -EINVAL; 7343 7344 return 0; 7345 } 7346 7347 static struct cfg80211_sched_scan_request * 7348 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 7349 struct nlattr **attrs, int max_match_sets) 7350 { 7351 struct cfg80211_sched_scan_request *request; 7352 struct nlattr *attr; 7353 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 7354 enum nl80211_band band; 7355 size_t ie_len; 7356 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 7357 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 7358 7359 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7360 n_channels = validate_scan_freqs( 7361 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7362 if (!n_channels) 7363 return ERR_PTR(-EINVAL); 7364 } else { 7365 n_channels = ieee80211_get_num_supported_channels(wiphy); 7366 } 7367 7368 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 7369 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7370 tmp) 7371 n_ssids++; 7372 7373 if (n_ssids > wiphy->max_sched_scan_ssids) 7374 return ERR_PTR(-EINVAL); 7375 7376 /* 7377 * First, count the number of 'real' matchsets. Due to an issue with 7378 * the old implementation, matchsets containing only the RSSI attribute 7379 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 7380 * RSSI for all matchsets, rather than their own matchset for reporting 7381 * all APs with a strong RSSI. This is needed to be compatible with 7382 * older userspace that treated a matchset with only the RSSI as the 7383 * global RSSI for all other matchsets - if there are other matchsets. 7384 */ 7385 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7386 nla_for_each_nested(attr, 7387 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7388 tmp) { 7389 struct nlattr *rssi; 7390 7391 err = nla_parse_nested(tb, 7392 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7393 attr, nl80211_match_policy, 7394 NULL); 7395 if (err) 7396 return ERR_PTR(err); 7397 7398 /* SSID and BSSID are mutually exclusive */ 7399 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 7400 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 7401 return ERR_PTR(-EINVAL); 7402 7403 /* add other standalone attributes here */ 7404 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 7405 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 7406 n_match_sets++; 7407 continue; 7408 } 7409 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7410 if (rssi) 7411 default_match_rssi = nla_get_s32(rssi); 7412 } 7413 } 7414 7415 /* However, if there's no other matchset, add the RSSI one */ 7416 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 7417 n_match_sets = 1; 7418 7419 if (n_match_sets > max_match_sets) 7420 return ERR_PTR(-EINVAL); 7421 7422 if (attrs[NL80211_ATTR_IE]) 7423 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 7424 else 7425 ie_len = 0; 7426 7427 if (ie_len > wiphy->max_sched_scan_ie_len) 7428 return ERR_PTR(-EINVAL); 7429 7430 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7431 /* 7432 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 7433 * each scan plan already specifies its own interval 7434 */ 7435 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7436 return ERR_PTR(-EINVAL); 7437 7438 nla_for_each_nested(attr, 7439 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 7440 n_plans++; 7441 } else { 7442 /* 7443 * The scan interval attribute is kept for backward 7444 * compatibility. If no scan plans are specified and sched scan 7445 * interval is specified, one scan plan will be set with this 7446 * scan interval and infinite number of iterations. 7447 */ 7448 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7449 return ERR_PTR(-EINVAL); 7450 7451 n_plans = 1; 7452 } 7453 7454 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 7455 return ERR_PTR(-EINVAL); 7456 7457 if (!wiphy_ext_feature_isset( 7458 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 7459 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 7460 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 7461 return ERR_PTR(-EINVAL); 7462 7463 request = kzalloc(sizeof(*request) 7464 + sizeof(*request->ssids) * n_ssids 7465 + sizeof(*request->match_sets) * n_match_sets 7466 + sizeof(*request->scan_plans) * n_plans 7467 + sizeof(*request->channels) * n_channels 7468 + ie_len, GFP_KERNEL); 7469 if (!request) 7470 return ERR_PTR(-ENOMEM); 7471 7472 if (n_ssids) 7473 request->ssids = (void *)&request->channels[n_channels]; 7474 request->n_ssids = n_ssids; 7475 if (ie_len) { 7476 if (n_ssids) 7477 request->ie = (void *)(request->ssids + n_ssids); 7478 else 7479 request->ie = (void *)(request->channels + n_channels); 7480 } 7481 7482 if (n_match_sets) { 7483 if (request->ie) 7484 request->match_sets = (void *)(request->ie + ie_len); 7485 else if (n_ssids) 7486 request->match_sets = 7487 (void *)(request->ssids + n_ssids); 7488 else 7489 request->match_sets = 7490 (void *)(request->channels + n_channels); 7491 } 7492 request->n_match_sets = n_match_sets; 7493 7494 if (n_match_sets) 7495 request->scan_plans = (void *)(request->match_sets + 7496 n_match_sets); 7497 else if (request->ie) 7498 request->scan_plans = (void *)(request->ie + ie_len); 7499 else if (n_ssids) 7500 request->scan_plans = (void *)(request->ssids + n_ssids); 7501 else 7502 request->scan_plans = (void *)(request->channels + n_channels); 7503 7504 request->n_scan_plans = n_plans; 7505 7506 i = 0; 7507 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7508 /* user specified, bail out if channel not found */ 7509 nla_for_each_nested(attr, 7510 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 7511 tmp) { 7512 struct ieee80211_channel *chan; 7513 7514 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7515 7516 if (!chan) { 7517 err = -EINVAL; 7518 goto out_free; 7519 } 7520 7521 /* ignore disabled channels */ 7522 if (chan->flags & IEEE80211_CHAN_DISABLED) 7523 continue; 7524 7525 request->channels[i] = chan; 7526 i++; 7527 } 7528 } else { 7529 /* all channels */ 7530 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7531 int j; 7532 7533 if (!wiphy->bands[band]) 7534 continue; 7535 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7536 struct ieee80211_channel *chan; 7537 7538 chan = &wiphy->bands[band]->channels[j]; 7539 7540 if (chan->flags & IEEE80211_CHAN_DISABLED) 7541 continue; 7542 7543 request->channels[i] = chan; 7544 i++; 7545 } 7546 } 7547 } 7548 7549 if (!i) { 7550 err = -EINVAL; 7551 goto out_free; 7552 } 7553 7554 request->n_channels = i; 7555 7556 i = 0; 7557 if (n_ssids) { 7558 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7559 tmp) { 7560 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7561 err = -EINVAL; 7562 goto out_free; 7563 } 7564 request->ssids[i].ssid_len = nla_len(attr); 7565 memcpy(request->ssids[i].ssid, nla_data(attr), 7566 nla_len(attr)); 7567 i++; 7568 } 7569 } 7570 7571 i = 0; 7572 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7573 nla_for_each_nested(attr, 7574 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7575 tmp) { 7576 struct nlattr *ssid, *bssid, *rssi; 7577 7578 err = nla_parse_nested(tb, 7579 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7580 attr, nl80211_match_policy, 7581 NULL); 7582 if (err) 7583 goto out_free; 7584 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 7585 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 7586 if (ssid || bssid) { 7587 if (WARN_ON(i >= n_match_sets)) { 7588 /* this indicates a programming error, 7589 * the loop above should have verified 7590 * things properly 7591 */ 7592 err = -EINVAL; 7593 goto out_free; 7594 } 7595 7596 if (ssid) { 7597 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 7598 err = -EINVAL; 7599 goto out_free; 7600 } 7601 memcpy(request->match_sets[i].ssid.ssid, 7602 nla_data(ssid), nla_len(ssid)); 7603 request->match_sets[i].ssid.ssid_len = 7604 nla_len(ssid); 7605 } 7606 if (bssid) { 7607 if (nla_len(bssid) != ETH_ALEN) { 7608 err = -EINVAL; 7609 goto out_free; 7610 } 7611 memcpy(request->match_sets[i].bssid, 7612 nla_data(bssid), ETH_ALEN); 7613 } 7614 7615 /* special attribute - old implementation w/a */ 7616 request->match_sets[i].rssi_thold = 7617 default_match_rssi; 7618 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7619 if (rssi) 7620 request->match_sets[i].rssi_thold = 7621 nla_get_s32(rssi); 7622 } 7623 i++; 7624 } 7625 7626 /* there was no other matchset, so the RSSI one is alone */ 7627 if (i == 0 && n_match_sets) 7628 request->match_sets[0].rssi_thold = default_match_rssi; 7629 7630 request->min_rssi_thold = INT_MAX; 7631 for (i = 0; i < n_match_sets; i++) 7632 request->min_rssi_thold = 7633 min(request->match_sets[i].rssi_thold, 7634 request->min_rssi_thold); 7635 } else { 7636 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 7637 } 7638 7639 if (ie_len) { 7640 request->ie_len = ie_len; 7641 memcpy((void *)request->ie, 7642 nla_data(attrs[NL80211_ATTR_IE]), 7643 request->ie_len); 7644 } 7645 7646 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true); 7647 if (err) 7648 goto out_free; 7649 7650 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 7651 request->delay = 7652 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 7653 7654 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 7655 request->relative_rssi = nla_get_s8( 7656 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 7657 request->relative_rssi_set = true; 7658 } 7659 7660 if (request->relative_rssi_set && 7661 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 7662 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 7663 7664 rssi_adjust = nla_data( 7665 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 7666 request->rssi_adjust.band = rssi_adjust->band; 7667 request->rssi_adjust.delta = rssi_adjust->delta; 7668 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 7669 err = -EINVAL; 7670 goto out_free; 7671 } 7672 } 7673 7674 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 7675 if (err) 7676 goto out_free; 7677 7678 request->scan_start = jiffies; 7679 7680 return request; 7681 7682 out_free: 7683 kfree(request); 7684 return ERR_PTR(err); 7685 } 7686 7687 static int nl80211_start_sched_scan(struct sk_buff *skb, 7688 struct genl_info *info) 7689 { 7690 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7691 struct net_device *dev = info->user_ptr[1]; 7692 struct wireless_dev *wdev = dev->ieee80211_ptr; 7693 struct cfg80211_sched_scan_request *sched_scan_req; 7694 bool want_multi; 7695 int err; 7696 7697 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 7698 return -EOPNOTSUPP; 7699 7700 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 7701 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 7702 if (err) 7703 return err; 7704 7705 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 7706 info->attrs, 7707 rdev->wiphy.max_match_sets); 7708 7709 err = PTR_ERR_OR_ZERO(sched_scan_req); 7710 if (err) 7711 goto out_err; 7712 7713 /* leave request id zero for legacy request 7714 * or if driver does not support multi-scheduled scan 7715 */ 7716 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) { 7717 while (!sched_scan_req->reqid) 7718 sched_scan_req->reqid = cfg80211_assign_cookie(rdev); 7719 } 7720 7721 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 7722 if (err) 7723 goto out_free; 7724 7725 sched_scan_req->dev = dev; 7726 sched_scan_req->wiphy = &rdev->wiphy; 7727 7728 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 7729 sched_scan_req->owner_nlportid = info->snd_portid; 7730 7731 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 7732 7733 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 7734 return 0; 7735 7736 out_free: 7737 kfree(sched_scan_req); 7738 out_err: 7739 return err; 7740 } 7741 7742 static int nl80211_stop_sched_scan(struct sk_buff *skb, 7743 struct genl_info *info) 7744 { 7745 struct cfg80211_sched_scan_request *req; 7746 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7747 u64 cookie; 7748 7749 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 7750 return -EOPNOTSUPP; 7751 7752 if (info->attrs[NL80211_ATTR_COOKIE]) { 7753 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7754 return __cfg80211_stop_sched_scan(rdev, cookie, false); 7755 } 7756 7757 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 7758 struct cfg80211_sched_scan_request, 7759 list); 7760 if (!req || req->reqid || 7761 (req->owner_nlportid && 7762 req->owner_nlportid != info->snd_portid)) 7763 return -ENOENT; 7764 7765 return cfg80211_stop_sched_scan_req(rdev, req, false); 7766 } 7767 7768 static int nl80211_start_radar_detection(struct sk_buff *skb, 7769 struct genl_info *info) 7770 { 7771 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7772 struct net_device *dev = info->user_ptr[1]; 7773 struct wireless_dev *wdev = dev->ieee80211_ptr; 7774 struct wiphy *wiphy = wdev->wiphy; 7775 struct cfg80211_chan_def chandef; 7776 enum nl80211_dfs_regions dfs_region; 7777 unsigned int cac_time_ms; 7778 int err; 7779 7780 dfs_region = reg_get_dfs_region(wiphy); 7781 if (dfs_region == NL80211_DFS_UNSET) 7782 return -EINVAL; 7783 7784 err = nl80211_parse_chandef(rdev, info, &chandef); 7785 if (err) 7786 return err; 7787 7788 if (netif_carrier_ok(dev)) 7789 return -EBUSY; 7790 7791 if (wdev->cac_started) 7792 return -EBUSY; 7793 7794 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 7795 if (err < 0) 7796 return err; 7797 7798 if (err == 0) 7799 return -EINVAL; 7800 7801 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) 7802 return -EINVAL; 7803 7804 /* CAC start is offloaded to HW and can't be started manually */ 7805 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) 7806 return -EOPNOTSUPP; 7807 7808 if (!rdev->ops->start_radar_detection) 7809 return -EOPNOTSUPP; 7810 7811 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 7812 if (WARN_ON(!cac_time_ms)) 7813 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 7814 7815 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 7816 if (!err) { 7817 wdev->chandef = chandef; 7818 wdev->cac_started = true; 7819 wdev->cac_start_time = jiffies; 7820 wdev->cac_time_ms = cac_time_ms; 7821 } 7822 return err; 7823 } 7824 7825 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 7826 { 7827 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7828 struct net_device *dev = info->user_ptr[1]; 7829 struct wireless_dev *wdev = dev->ieee80211_ptr; 7830 struct cfg80211_csa_settings params; 7831 /* csa_attrs is defined static to avoid waste of stack size - this 7832 * function is called under RTNL lock, so this should not be a problem. 7833 */ 7834 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 7835 int err; 7836 bool need_new_beacon = false; 7837 bool need_handle_dfs_flag = true; 7838 int len, i; 7839 u32 cs_count; 7840 7841 if (!rdev->ops->channel_switch || 7842 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 7843 return -EOPNOTSUPP; 7844 7845 switch (dev->ieee80211_ptr->iftype) { 7846 case NL80211_IFTYPE_AP: 7847 case NL80211_IFTYPE_P2P_GO: 7848 need_new_beacon = true; 7849 /* For all modes except AP the handle_dfs flag needs to be 7850 * supplied to tell the kernel that userspace will handle radar 7851 * events when they happen. Otherwise a switch to a channel 7852 * requiring DFS will be rejected. 7853 */ 7854 need_handle_dfs_flag = false; 7855 7856 /* useless if AP is not running */ 7857 if (!wdev->beacon_interval) 7858 return -ENOTCONN; 7859 break; 7860 case NL80211_IFTYPE_ADHOC: 7861 if (!wdev->ssid_len) 7862 return -ENOTCONN; 7863 break; 7864 case NL80211_IFTYPE_MESH_POINT: 7865 if (!wdev->mesh_id_len) 7866 return -ENOTCONN; 7867 break; 7868 default: 7869 return -EOPNOTSUPP; 7870 } 7871 7872 memset(¶ms, 0, sizeof(params)); 7873 params.beacon_csa.ftm_responder = -1; 7874 7875 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7876 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 7877 return -EINVAL; 7878 7879 /* only important for AP, IBSS and mesh create IEs internally */ 7880 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 7881 return -EINVAL; 7882 7883 /* Even though the attribute is u32, the specification says 7884 * u8, so let's make sure we don't overflow. 7885 */ 7886 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 7887 if (cs_count > 255) 7888 return -EINVAL; 7889 7890 params.count = cs_count; 7891 7892 if (!need_new_beacon) 7893 goto skip_beacons; 7894 7895 err = nl80211_parse_beacon(rdev, info->attrs, ¶ms.beacon_after); 7896 if (err) 7897 return err; 7898 7899 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 7900 info->attrs[NL80211_ATTR_CSA_IES], 7901 nl80211_policy, info->extack); 7902 if (err) 7903 return err; 7904 7905 err = nl80211_parse_beacon(rdev, csa_attrs, ¶ms.beacon_csa); 7906 if (err) 7907 return err; 7908 7909 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 7910 return -EINVAL; 7911 7912 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7913 if (!len || (len % sizeof(u16))) 7914 return -EINVAL; 7915 7916 params.n_counter_offsets_beacon = len / sizeof(u16); 7917 if (rdev->wiphy.max_num_csa_counters && 7918 (params.n_counter_offsets_beacon > 7919 rdev->wiphy.max_num_csa_counters)) 7920 return -EINVAL; 7921 7922 params.counter_offsets_beacon = 7923 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7924 7925 /* sanity checks - counters should fit and be the same */ 7926 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 7927 u16 offset = params.counter_offsets_beacon[i]; 7928 7929 if (offset >= params.beacon_csa.tail_len) 7930 return -EINVAL; 7931 7932 if (params.beacon_csa.tail[offset] != params.count) 7933 return -EINVAL; 7934 } 7935 7936 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 7937 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7938 if (!len || (len % sizeof(u16))) 7939 return -EINVAL; 7940 7941 params.n_counter_offsets_presp = len / sizeof(u16); 7942 if (rdev->wiphy.max_num_csa_counters && 7943 (params.n_counter_offsets_presp > 7944 rdev->wiphy.max_num_csa_counters)) 7945 return -EINVAL; 7946 7947 params.counter_offsets_presp = 7948 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7949 7950 /* sanity checks - counters should fit and be the same */ 7951 for (i = 0; i < params.n_counter_offsets_presp; i++) { 7952 u16 offset = params.counter_offsets_presp[i]; 7953 7954 if (offset >= params.beacon_csa.probe_resp_len) 7955 return -EINVAL; 7956 7957 if (params.beacon_csa.probe_resp[offset] != 7958 params.count) 7959 return -EINVAL; 7960 } 7961 } 7962 7963 skip_beacons: 7964 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 7965 if (err) 7966 return err; 7967 7968 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 7969 wdev->iftype)) 7970 return -EINVAL; 7971 7972 err = cfg80211_chandef_dfs_required(wdev->wiphy, 7973 ¶ms.chandef, 7974 wdev->iftype); 7975 if (err < 0) 7976 return err; 7977 7978 if (err > 0) { 7979 params.radar_required = true; 7980 if (need_handle_dfs_flag && 7981 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 7982 return -EINVAL; 7983 } 7984 } 7985 7986 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 7987 params.block_tx = true; 7988 7989 wdev_lock(wdev); 7990 err = rdev_channel_switch(rdev, dev, ¶ms); 7991 wdev_unlock(wdev); 7992 7993 return err; 7994 } 7995 7996 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 7997 u32 seq, int flags, 7998 struct cfg80211_registered_device *rdev, 7999 struct wireless_dev *wdev, 8000 struct cfg80211_internal_bss *intbss) 8001 { 8002 struct cfg80211_bss *res = &intbss->pub; 8003 const struct cfg80211_bss_ies *ies; 8004 void *hdr; 8005 struct nlattr *bss; 8006 8007 ASSERT_WDEV_LOCK(wdev); 8008 8009 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 8010 NL80211_CMD_NEW_SCAN_RESULTS); 8011 if (!hdr) 8012 return -1; 8013 8014 genl_dump_check_consistent(cb, hdr); 8015 8016 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 8017 goto nla_put_failure; 8018 if (wdev->netdev && 8019 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 8020 goto nla_put_failure; 8021 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 8022 NL80211_ATTR_PAD)) 8023 goto nla_put_failure; 8024 8025 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 8026 if (!bss) 8027 goto nla_put_failure; 8028 if ((!is_zero_ether_addr(res->bssid) && 8029 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 8030 goto nla_put_failure; 8031 8032 rcu_read_lock(); 8033 /* indicate whether we have probe response data or not */ 8034 if (rcu_access_pointer(res->proberesp_ies) && 8035 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 8036 goto fail_unlock_rcu; 8037 8038 /* this pointer prefers to be pointed to probe response data 8039 * but is always valid 8040 */ 8041 ies = rcu_dereference(res->ies); 8042 if (ies) { 8043 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 8044 NL80211_BSS_PAD)) 8045 goto fail_unlock_rcu; 8046 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 8047 ies->len, ies->data)) 8048 goto fail_unlock_rcu; 8049 } 8050 8051 /* and this pointer is always (unless driver didn't know) beacon data */ 8052 ies = rcu_dereference(res->beacon_ies); 8053 if (ies && ies->from_beacon) { 8054 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 8055 NL80211_BSS_PAD)) 8056 goto fail_unlock_rcu; 8057 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 8058 ies->len, ies->data)) 8059 goto fail_unlock_rcu; 8060 } 8061 rcu_read_unlock(); 8062 8063 if (res->beacon_interval && 8064 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 8065 goto nla_put_failure; 8066 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 8067 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 8068 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 8069 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 8070 jiffies_to_msecs(jiffies - intbss->ts))) 8071 goto nla_put_failure; 8072 8073 if (intbss->parent_tsf && 8074 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 8075 intbss->parent_tsf, NL80211_BSS_PAD) || 8076 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 8077 intbss->parent_bssid))) 8078 goto nla_put_failure; 8079 8080 if (intbss->ts_boottime && 8081 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 8082 intbss->ts_boottime, NL80211_BSS_PAD)) 8083 goto nla_put_failure; 8084 8085 if (!nl80211_put_signal(msg, intbss->pub.chains, 8086 intbss->pub.chain_signal, 8087 NL80211_BSS_CHAIN_SIGNAL)) 8088 goto nla_put_failure; 8089 8090 switch (rdev->wiphy.signal_type) { 8091 case CFG80211_SIGNAL_TYPE_MBM: 8092 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 8093 goto nla_put_failure; 8094 break; 8095 case CFG80211_SIGNAL_TYPE_UNSPEC: 8096 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 8097 goto nla_put_failure; 8098 break; 8099 default: 8100 break; 8101 } 8102 8103 switch (wdev->iftype) { 8104 case NL80211_IFTYPE_P2P_CLIENT: 8105 case NL80211_IFTYPE_STATION: 8106 if (intbss == wdev->current_bss && 8107 nla_put_u32(msg, NL80211_BSS_STATUS, 8108 NL80211_BSS_STATUS_ASSOCIATED)) 8109 goto nla_put_failure; 8110 break; 8111 case NL80211_IFTYPE_ADHOC: 8112 if (intbss == wdev->current_bss && 8113 nla_put_u32(msg, NL80211_BSS_STATUS, 8114 NL80211_BSS_STATUS_IBSS_JOINED)) 8115 goto nla_put_failure; 8116 break; 8117 default: 8118 break; 8119 } 8120 8121 nla_nest_end(msg, bss); 8122 8123 genlmsg_end(msg, hdr); 8124 return 0; 8125 8126 fail_unlock_rcu: 8127 rcu_read_unlock(); 8128 nla_put_failure: 8129 genlmsg_cancel(msg, hdr); 8130 return -EMSGSIZE; 8131 } 8132 8133 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 8134 { 8135 struct cfg80211_registered_device *rdev; 8136 struct cfg80211_internal_bss *scan; 8137 struct wireless_dev *wdev; 8138 int start = cb->args[2], idx = 0; 8139 int err; 8140 8141 rtnl_lock(); 8142 err = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 8143 if (err) { 8144 rtnl_unlock(); 8145 return err; 8146 } 8147 8148 wdev_lock(wdev); 8149 spin_lock_bh(&rdev->bss_lock); 8150 8151 /* 8152 * dump_scan will be called multiple times to break up the scan results 8153 * into multiple messages. It is unlikely that any more bss-es will be 8154 * expired after the first call, so only call only call this on the 8155 * first dump_scan invocation. 8156 */ 8157 if (start == 0) 8158 cfg80211_bss_expire(rdev); 8159 8160 cb->seq = rdev->bss_generation; 8161 8162 list_for_each_entry(scan, &rdev->bss_list, list) { 8163 if (++idx <= start) 8164 continue; 8165 if (nl80211_send_bss(skb, cb, 8166 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8167 rdev, wdev, scan) < 0) { 8168 idx--; 8169 break; 8170 } 8171 } 8172 8173 spin_unlock_bh(&rdev->bss_lock); 8174 wdev_unlock(wdev); 8175 8176 cb->args[2] = idx; 8177 rtnl_unlock(); 8178 8179 return skb->len; 8180 } 8181 8182 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 8183 int flags, struct net_device *dev, 8184 bool allow_radio_stats, 8185 struct survey_info *survey) 8186 { 8187 void *hdr; 8188 struct nlattr *infoattr; 8189 8190 /* skip radio stats if userspace didn't request them */ 8191 if (!survey->channel && !allow_radio_stats) 8192 return 0; 8193 8194 hdr = nl80211hdr_put(msg, portid, seq, flags, 8195 NL80211_CMD_NEW_SURVEY_RESULTS); 8196 if (!hdr) 8197 return -ENOMEM; 8198 8199 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 8200 goto nla_put_failure; 8201 8202 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 8203 if (!infoattr) 8204 goto nla_put_failure; 8205 8206 if (survey->channel && 8207 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 8208 survey->channel->center_freq)) 8209 goto nla_put_failure; 8210 8211 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 8212 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 8213 goto nla_put_failure; 8214 if ((survey->filled & SURVEY_INFO_IN_USE) && 8215 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 8216 goto nla_put_failure; 8217 if ((survey->filled & SURVEY_INFO_TIME) && 8218 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 8219 survey->time, NL80211_SURVEY_INFO_PAD)) 8220 goto nla_put_failure; 8221 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 8222 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 8223 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 8224 goto nla_put_failure; 8225 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 8226 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 8227 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 8228 goto nla_put_failure; 8229 if ((survey->filled & SURVEY_INFO_TIME_RX) && 8230 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 8231 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 8232 goto nla_put_failure; 8233 if ((survey->filled & SURVEY_INFO_TIME_TX) && 8234 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 8235 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 8236 goto nla_put_failure; 8237 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 8238 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 8239 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 8240 goto nla_put_failure; 8241 8242 nla_nest_end(msg, infoattr); 8243 8244 genlmsg_end(msg, hdr); 8245 return 0; 8246 8247 nla_put_failure: 8248 genlmsg_cancel(msg, hdr); 8249 return -EMSGSIZE; 8250 } 8251 8252 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 8253 { 8254 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 8255 struct survey_info survey; 8256 struct cfg80211_registered_device *rdev; 8257 struct wireless_dev *wdev; 8258 int survey_idx = cb->args[2]; 8259 int res; 8260 bool radio_stats; 8261 8262 rtnl_lock(); 8263 res = nl80211_prepare_wdev_dump(cb, &rdev, &wdev); 8264 if (res) 8265 goto out_err; 8266 8267 /* prepare_wdev_dump parsed the attributes */ 8268 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 8269 8270 if (!wdev->netdev) { 8271 res = -EINVAL; 8272 goto out_err; 8273 } 8274 8275 if (!rdev->ops->dump_survey) { 8276 res = -EOPNOTSUPP; 8277 goto out_err; 8278 } 8279 8280 while (1) { 8281 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 8282 if (res == -ENOENT) 8283 break; 8284 if (res) 8285 goto out_err; 8286 8287 /* don't send disabled channels, but do send non-channel data */ 8288 if (survey.channel && 8289 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 8290 survey_idx++; 8291 continue; 8292 } 8293 8294 if (nl80211_send_survey(skb, 8295 NETLINK_CB(cb->skb).portid, 8296 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8297 wdev->netdev, radio_stats, &survey) < 0) 8298 goto out; 8299 survey_idx++; 8300 } 8301 8302 out: 8303 cb->args[2] = survey_idx; 8304 res = skb->len; 8305 out_err: 8306 rtnl_unlock(); 8307 return res; 8308 } 8309 8310 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 8311 { 8312 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 8313 NL80211_WPA_VERSION_2)); 8314 } 8315 8316 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 8317 { 8318 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8319 struct net_device *dev = info->user_ptr[1]; 8320 struct ieee80211_channel *chan; 8321 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL; 8322 int err, ssid_len, ie_len = 0, auth_data_len = 0; 8323 enum nl80211_auth_type auth_type; 8324 struct key_parse key; 8325 bool local_state_change; 8326 8327 if (!info->attrs[NL80211_ATTR_MAC]) 8328 return -EINVAL; 8329 8330 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 8331 return -EINVAL; 8332 8333 if (!info->attrs[NL80211_ATTR_SSID]) 8334 return -EINVAL; 8335 8336 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8337 return -EINVAL; 8338 8339 err = nl80211_parse_key(info, &key); 8340 if (err) 8341 return err; 8342 8343 if (key.idx >= 0) { 8344 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 8345 return -EINVAL; 8346 if (!key.p.key || !key.p.key_len) 8347 return -EINVAL; 8348 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 8349 key.p.key_len != WLAN_KEY_LEN_WEP40) && 8350 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 8351 key.p.key_len != WLAN_KEY_LEN_WEP104)) 8352 return -EINVAL; 8353 if (key.idx > 3) 8354 return -EINVAL; 8355 } else { 8356 key.p.key_len = 0; 8357 key.p.key = NULL; 8358 } 8359 8360 if (key.idx >= 0) { 8361 int i; 8362 bool ok = false; 8363 8364 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 8365 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 8366 ok = true; 8367 break; 8368 } 8369 } 8370 if (!ok) 8371 return -EINVAL; 8372 } 8373 8374 if (!rdev->ops->auth) 8375 return -EOPNOTSUPP; 8376 8377 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8378 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8379 return -EOPNOTSUPP; 8380 8381 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8382 chan = nl80211_get_valid_chan(&rdev->wiphy, 8383 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8384 if (!chan) 8385 return -EINVAL; 8386 8387 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8388 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8389 8390 if (info->attrs[NL80211_ATTR_IE]) { 8391 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8392 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8393 } 8394 8395 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8396 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 8397 return -EINVAL; 8398 8399 if ((auth_type == NL80211_AUTHTYPE_SAE || 8400 auth_type == NL80211_AUTHTYPE_FILS_SK || 8401 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 8402 auth_type == NL80211_AUTHTYPE_FILS_PK) && 8403 !info->attrs[NL80211_ATTR_AUTH_DATA]) 8404 return -EINVAL; 8405 8406 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 8407 if (auth_type != NL80211_AUTHTYPE_SAE && 8408 auth_type != NL80211_AUTHTYPE_FILS_SK && 8409 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 8410 auth_type != NL80211_AUTHTYPE_FILS_PK) 8411 return -EINVAL; 8412 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 8413 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 8414 /* need to include at least Auth Transaction and Status Code */ 8415 if (auth_data_len < 4) 8416 return -EINVAL; 8417 } 8418 8419 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8420 8421 /* 8422 * Since we no longer track auth state, ignore 8423 * requests to only change local state. 8424 */ 8425 if (local_state_change) 8426 return 0; 8427 8428 wdev_lock(dev->ieee80211_ptr); 8429 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 8430 ssid, ssid_len, ie, ie_len, 8431 key.p.key, key.p.key_len, key.idx, 8432 auth_data, auth_data_len); 8433 wdev_unlock(dev->ieee80211_ptr); 8434 return err; 8435 } 8436 8437 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev, 8438 struct genl_info *info) 8439 { 8440 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8441 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set"); 8442 return -EINVAL; 8443 } 8444 8445 if (!rdev->ops->tx_control_port || 8446 !wiphy_ext_feature_isset(&rdev->wiphy, 8447 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 8448 return -EOPNOTSUPP; 8449 8450 return 0; 8451 } 8452 8453 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 8454 struct genl_info *info, 8455 struct cfg80211_crypto_settings *settings, 8456 int cipher_limit) 8457 { 8458 memset(settings, 0, sizeof(*settings)); 8459 8460 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 8461 8462 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 8463 u16 proto; 8464 8465 proto = nla_get_u16( 8466 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 8467 settings->control_port_ethertype = cpu_to_be16(proto); 8468 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 8469 proto != ETH_P_PAE) 8470 return -EINVAL; 8471 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 8472 settings->control_port_no_encrypt = true; 8473 } else 8474 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 8475 8476 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 8477 int r = validate_pae_over_nl80211(rdev, info); 8478 8479 if (r < 0) 8480 return r; 8481 8482 settings->control_port_over_nl80211 = true; 8483 } 8484 8485 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 8486 void *data; 8487 int len, i; 8488 8489 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8490 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8491 settings->n_ciphers_pairwise = len / sizeof(u32); 8492 8493 if (len % sizeof(u32)) 8494 return -EINVAL; 8495 8496 if (settings->n_ciphers_pairwise > cipher_limit) 8497 return -EINVAL; 8498 8499 memcpy(settings->ciphers_pairwise, data, len); 8500 8501 for (i = 0; i < settings->n_ciphers_pairwise; i++) 8502 if (!cfg80211_supported_cipher_suite( 8503 &rdev->wiphy, 8504 settings->ciphers_pairwise[i])) 8505 return -EINVAL; 8506 } 8507 8508 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 8509 settings->cipher_group = 8510 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 8511 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 8512 settings->cipher_group)) 8513 return -EINVAL; 8514 } 8515 8516 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 8517 settings->wpa_versions = 8518 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 8519 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 8520 return -EINVAL; 8521 } 8522 8523 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 8524 void *data; 8525 int len; 8526 8527 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 8528 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 8529 settings->n_akm_suites = len / sizeof(u32); 8530 8531 if (len % sizeof(u32)) 8532 return -EINVAL; 8533 8534 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 8535 return -EINVAL; 8536 8537 memcpy(settings->akm_suites, data, len); 8538 } 8539 8540 if (info->attrs[NL80211_ATTR_PMK]) { 8541 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 8542 return -EINVAL; 8543 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8544 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK)) 8545 return -EINVAL; 8546 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 8547 } 8548 8549 return 0; 8550 } 8551 8552 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 8553 { 8554 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8555 struct net_device *dev = info->user_ptr[1]; 8556 struct ieee80211_channel *chan; 8557 struct cfg80211_assoc_request req = {}; 8558 const u8 *bssid, *ssid; 8559 int err, ssid_len = 0; 8560 8561 if (dev->ieee80211_ptr->conn_owner_nlportid && 8562 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8563 return -EPERM; 8564 8565 if (!info->attrs[NL80211_ATTR_MAC] || 8566 !info->attrs[NL80211_ATTR_SSID] || 8567 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8568 return -EINVAL; 8569 8570 if (!rdev->ops->assoc) 8571 return -EOPNOTSUPP; 8572 8573 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8574 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8575 return -EOPNOTSUPP; 8576 8577 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8578 8579 chan = nl80211_get_valid_chan(&rdev->wiphy, 8580 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8581 if (!chan) 8582 return -EINVAL; 8583 8584 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8585 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8586 8587 if (info->attrs[NL80211_ATTR_IE]) { 8588 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8589 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8590 } 8591 8592 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8593 enum nl80211_mfp mfp = 8594 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8595 if (mfp == NL80211_MFP_REQUIRED) 8596 req.use_mfp = true; 8597 else if (mfp != NL80211_MFP_NO) 8598 return -EINVAL; 8599 } 8600 8601 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8602 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8603 8604 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8605 req.flags |= ASSOC_REQ_DISABLE_HT; 8606 8607 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8608 memcpy(&req.ht_capa_mask, 8609 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8610 sizeof(req.ht_capa_mask)); 8611 8612 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8613 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8614 return -EINVAL; 8615 memcpy(&req.ht_capa, 8616 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8617 sizeof(req.ht_capa)); 8618 } 8619 8620 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8621 req.flags |= ASSOC_REQ_DISABLE_VHT; 8622 8623 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8624 memcpy(&req.vht_capa_mask, 8625 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8626 sizeof(req.vht_capa_mask)); 8627 8628 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8629 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8630 return -EINVAL; 8631 memcpy(&req.vht_capa, 8632 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8633 sizeof(req.vht_capa)); 8634 } 8635 8636 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8637 if (!((rdev->wiphy.features & 8638 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8639 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8640 !wiphy_ext_feature_isset(&rdev->wiphy, 8641 NL80211_EXT_FEATURE_RRM)) 8642 return -EINVAL; 8643 req.flags |= ASSOC_REQ_USE_RRM; 8644 } 8645 8646 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 8647 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 8648 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 8649 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 8650 return -EINVAL; 8651 req.fils_nonces = 8652 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 8653 } 8654 8655 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 8656 if (!err) { 8657 wdev_lock(dev->ieee80211_ptr); 8658 8659 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 8660 ssid, ssid_len, &req); 8661 8662 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8663 dev->ieee80211_ptr->conn_owner_nlportid = 8664 info->snd_portid; 8665 memcpy(dev->ieee80211_ptr->disconnect_bssid, 8666 bssid, ETH_ALEN); 8667 } 8668 8669 wdev_unlock(dev->ieee80211_ptr); 8670 } 8671 8672 return err; 8673 } 8674 8675 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 8676 { 8677 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8678 struct net_device *dev = info->user_ptr[1]; 8679 const u8 *ie = NULL, *bssid; 8680 int ie_len = 0, err; 8681 u16 reason_code; 8682 bool local_state_change; 8683 8684 if (dev->ieee80211_ptr->conn_owner_nlportid && 8685 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8686 return -EPERM; 8687 8688 if (!info->attrs[NL80211_ATTR_MAC]) 8689 return -EINVAL; 8690 8691 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8692 return -EINVAL; 8693 8694 if (!rdev->ops->deauth) 8695 return -EOPNOTSUPP; 8696 8697 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8699 return -EOPNOTSUPP; 8700 8701 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8702 8703 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8704 if (reason_code == 0) { 8705 /* Reason Code 0 is reserved */ 8706 return -EINVAL; 8707 } 8708 8709 if (info->attrs[NL80211_ATTR_IE]) { 8710 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8711 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8712 } 8713 8714 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8715 8716 wdev_lock(dev->ieee80211_ptr); 8717 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 8718 local_state_change); 8719 wdev_unlock(dev->ieee80211_ptr); 8720 return err; 8721 } 8722 8723 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 8724 { 8725 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8726 struct net_device *dev = info->user_ptr[1]; 8727 const u8 *ie = NULL, *bssid; 8728 int ie_len = 0, err; 8729 u16 reason_code; 8730 bool local_state_change; 8731 8732 if (dev->ieee80211_ptr->conn_owner_nlportid && 8733 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8734 return -EPERM; 8735 8736 if (!info->attrs[NL80211_ATTR_MAC]) 8737 return -EINVAL; 8738 8739 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8740 return -EINVAL; 8741 8742 if (!rdev->ops->disassoc) 8743 return -EOPNOTSUPP; 8744 8745 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8746 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8747 return -EOPNOTSUPP; 8748 8749 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8750 8751 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8752 if (reason_code == 0) { 8753 /* Reason Code 0 is reserved */ 8754 return -EINVAL; 8755 } 8756 8757 if (info->attrs[NL80211_ATTR_IE]) { 8758 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8759 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8760 } 8761 8762 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8763 8764 wdev_lock(dev->ieee80211_ptr); 8765 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 8766 local_state_change); 8767 wdev_unlock(dev->ieee80211_ptr); 8768 return err; 8769 } 8770 8771 static bool 8772 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 8773 int mcast_rate[NUM_NL80211_BANDS], 8774 int rateval) 8775 { 8776 struct wiphy *wiphy = &rdev->wiphy; 8777 bool found = false; 8778 int band, i; 8779 8780 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8781 struct ieee80211_supported_band *sband; 8782 8783 sband = wiphy->bands[band]; 8784 if (!sband) 8785 continue; 8786 8787 for (i = 0; i < sband->n_bitrates; i++) { 8788 if (sband->bitrates[i].bitrate == rateval) { 8789 mcast_rate[band] = i + 1; 8790 found = true; 8791 break; 8792 } 8793 } 8794 } 8795 8796 return found; 8797 } 8798 8799 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 8800 { 8801 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8802 struct net_device *dev = info->user_ptr[1]; 8803 struct cfg80211_ibss_params ibss; 8804 struct wiphy *wiphy; 8805 struct cfg80211_cached_keys *connkeys = NULL; 8806 int err; 8807 8808 memset(&ibss, 0, sizeof(ibss)); 8809 8810 if (!info->attrs[NL80211_ATTR_SSID] || 8811 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8812 return -EINVAL; 8813 8814 ibss.beacon_interval = 100; 8815 8816 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 8817 ibss.beacon_interval = 8818 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8819 8820 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 8821 ibss.beacon_interval); 8822 if (err) 8823 return err; 8824 8825 if (!rdev->ops->join_ibss) 8826 return -EOPNOTSUPP; 8827 8828 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8829 return -EOPNOTSUPP; 8830 8831 wiphy = &rdev->wiphy; 8832 8833 if (info->attrs[NL80211_ATTR_MAC]) { 8834 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8835 8836 if (!is_valid_ether_addr(ibss.bssid)) 8837 return -EINVAL; 8838 } 8839 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8840 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8841 8842 if (info->attrs[NL80211_ATTR_IE]) { 8843 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8844 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8845 } 8846 8847 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 8848 if (err) 8849 return err; 8850 8851 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 8852 NL80211_IFTYPE_ADHOC)) 8853 return -EINVAL; 8854 8855 switch (ibss.chandef.width) { 8856 case NL80211_CHAN_WIDTH_5: 8857 case NL80211_CHAN_WIDTH_10: 8858 case NL80211_CHAN_WIDTH_20_NOHT: 8859 break; 8860 case NL80211_CHAN_WIDTH_20: 8861 case NL80211_CHAN_WIDTH_40: 8862 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8863 return -EINVAL; 8864 break; 8865 case NL80211_CHAN_WIDTH_80: 8866 case NL80211_CHAN_WIDTH_80P80: 8867 case NL80211_CHAN_WIDTH_160: 8868 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8869 return -EINVAL; 8870 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8871 NL80211_EXT_FEATURE_VHT_IBSS)) 8872 return -EINVAL; 8873 break; 8874 default: 8875 return -EINVAL; 8876 } 8877 8878 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 8879 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 8880 8881 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8882 u8 *rates = 8883 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8884 int n_rates = 8885 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8886 struct ieee80211_supported_band *sband = 8887 wiphy->bands[ibss.chandef.chan->band]; 8888 8889 err = ieee80211_get_ratemask(sband, rates, n_rates, 8890 &ibss.basic_rates); 8891 if (err) 8892 return err; 8893 } 8894 8895 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8896 memcpy(&ibss.ht_capa_mask, 8897 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8898 sizeof(ibss.ht_capa_mask)); 8899 8900 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8901 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8902 return -EINVAL; 8903 memcpy(&ibss.ht_capa, 8904 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8905 sizeof(ibss.ht_capa)); 8906 } 8907 8908 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8909 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 8910 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8911 return -EINVAL; 8912 8913 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8914 bool no_ht = false; 8915 8916 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht); 8917 if (IS_ERR(connkeys)) 8918 return PTR_ERR(connkeys); 8919 8920 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 8921 no_ht) { 8922 kzfree(connkeys); 8923 return -EINVAL; 8924 } 8925 } 8926 8927 ibss.control_port = 8928 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 8929 8930 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 8931 int r = validate_pae_over_nl80211(rdev, info); 8932 8933 if (r < 0) 8934 return r; 8935 8936 ibss.control_port_over_nl80211 = true; 8937 } 8938 8939 ibss.userspace_handles_dfs = 8940 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 8941 8942 wdev_lock(dev->ieee80211_ptr); 8943 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 8944 if (err) 8945 kzfree(connkeys); 8946 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 8947 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 8948 wdev_unlock(dev->ieee80211_ptr); 8949 8950 return err; 8951 } 8952 8953 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 8954 { 8955 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8956 struct net_device *dev = info->user_ptr[1]; 8957 8958 if (!rdev->ops->leave_ibss) 8959 return -EOPNOTSUPP; 8960 8961 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8962 return -EOPNOTSUPP; 8963 8964 return cfg80211_leave_ibss(rdev, dev, false); 8965 } 8966 8967 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 8968 { 8969 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8970 struct net_device *dev = info->user_ptr[1]; 8971 int mcast_rate[NUM_NL80211_BANDS]; 8972 u32 nla_rate; 8973 int err; 8974 8975 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 8976 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 8977 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 8978 return -EOPNOTSUPP; 8979 8980 if (!rdev->ops->set_mcast_rate) 8981 return -EOPNOTSUPP; 8982 8983 memset(mcast_rate, 0, sizeof(mcast_rate)); 8984 8985 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 8986 return -EINVAL; 8987 8988 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 8989 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 8990 return -EINVAL; 8991 8992 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 8993 8994 return err; 8995 } 8996 8997 static struct sk_buff * 8998 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 8999 struct wireless_dev *wdev, int approxlen, 9000 u32 portid, u32 seq, enum nl80211_commands cmd, 9001 enum nl80211_attrs attr, 9002 const struct nl80211_vendor_cmd_info *info, 9003 gfp_t gfp) 9004 { 9005 struct sk_buff *skb; 9006 void *hdr; 9007 struct nlattr *data; 9008 9009 skb = nlmsg_new(approxlen + 100, gfp); 9010 if (!skb) 9011 return NULL; 9012 9013 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 9014 if (!hdr) { 9015 kfree_skb(skb); 9016 return NULL; 9017 } 9018 9019 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 9020 goto nla_put_failure; 9021 9022 if (info) { 9023 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 9024 info->vendor_id)) 9025 goto nla_put_failure; 9026 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 9027 info->subcmd)) 9028 goto nla_put_failure; 9029 } 9030 9031 if (wdev) { 9032 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 9033 wdev_id(wdev), NL80211_ATTR_PAD)) 9034 goto nla_put_failure; 9035 if (wdev->netdev && 9036 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 9037 wdev->netdev->ifindex)) 9038 goto nla_put_failure; 9039 } 9040 9041 data = nla_nest_start(skb, attr); 9042 if (!data) 9043 goto nla_put_failure; 9044 9045 ((void **)skb->cb)[0] = rdev; 9046 ((void **)skb->cb)[1] = hdr; 9047 ((void **)skb->cb)[2] = data; 9048 9049 return skb; 9050 9051 nla_put_failure: 9052 kfree_skb(skb); 9053 return NULL; 9054 } 9055 9056 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 9057 struct wireless_dev *wdev, 9058 enum nl80211_commands cmd, 9059 enum nl80211_attrs attr, 9060 int vendor_event_idx, 9061 int approxlen, gfp_t gfp) 9062 { 9063 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9064 const struct nl80211_vendor_cmd_info *info; 9065 9066 switch (cmd) { 9067 case NL80211_CMD_TESTMODE: 9068 if (WARN_ON(vendor_event_idx != -1)) 9069 return NULL; 9070 info = NULL; 9071 break; 9072 case NL80211_CMD_VENDOR: 9073 if (WARN_ON(vendor_event_idx < 0 || 9074 vendor_event_idx >= wiphy->n_vendor_events)) 9075 return NULL; 9076 info = &wiphy->vendor_events[vendor_event_idx]; 9077 break; 9078 default: 9079 WARN_ON(1); 9080 return NULL; 9081 } 9082 9083 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 9084 cmd, attr, info, gfp); 9085 } 9086 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 9087 9088 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 9089 { 9090 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9091 void *hdr = ((void **)skb->cb)[1]; 9092 struct nlattr *data = ((void **)skb->cb)[2]; 9093 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 9094 9095 /* clear CB data for netlink core to own from now on */ 9096 memset(skb->cb, 0, sizeof(skb->cb)); 9097 9098 nla_nest_end(skb, data); 9099 genlmsg_end(skb, hdr); 9100 9101 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 9102 mcgrp = NL80211_MCGRP_VENDOR; 9103 9104 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 9105 mcgrp, gfp); 9106 } 9107 EXPORT_SYMBOL(__cfg80211_send_event_skb); 9108 9109 #ifdef CONFIG_NL80211_TESTMODE 9110 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 9111 { 9112 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9113 struct wireless_dev *wdev = 9114 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9115 int err; 9116 9117 if (!rdev->ops->testmode_cmd) 9118 return -EOPNOTSUPP; 9119 9120 if (IS_ERR(wdev)) { 9121 err = PTR_ERR(wdev); 9122 if (err != -EINVAL) 9123 return err; 9124 wdev = NULL; 9125 } else if (wdev->wiphy != &rdev->wiphy) { 9126 return -EINVAL; 9127 } 9128 9129 if (!info->attrs[NL80211_ATTR_TESTDATA]) 9130 return -EINVAL; 9131 9132 rdev->cur_cmd_info = info; 9133 err = rdev_testmode_cmd(rdev, wdev, 9134 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 9135 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 9136 rdev->cur_cmd_info = NULL; 9137 9138 return err; 9139 } 9140 9141 static int nl80211_testmode_dump(struct sk_buff *skb, 9142 struct netlink_callback *cb) 9143 { 9144 struct cfg80211_registered_device *rdev; 9145 int err; 9146 long phy_idx; 9147 void *data = NULL; 9148 int data_len = 0; 9149 9150 rtnl_lock(); 9151 9152 if (cb->args[0]) { 9153 /* 9154 * 0 is a valid index, but not valid for args[0], 9155 * so we need to offset by 1. 9156 */ 9157 phy_idx = cb->args[0] - 1; 9158 9159 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 9160 if (!rdev) { 9161 err = -ENOENT; 9162 goto out_err; 9163 } 9164 } else { 9165 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 9166 9167 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 9168 attrbuf, nl80211_fam.maxattr, 9169 nl80211_policy, NULL); 9170 if (err) 9171 goto out_err; 9172 9173 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 9174 if (IS_ERR(rdev)) { 9175 err = PTR_ERR(rdev); 9176 goto out_err; 9177 } 9178 phy_idx = rdev->wiphy_idx; 9179 9180 if (attrbuf[NL80211_ATTR_TESTDATA]) 9181 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 9182 } 9183 9184 if (cb->args[1]) { 9185 data = nla_data((void *)cb->args[1]); 9186 data_len = nla_len((void *)cb->args[1]); 9187 } 9188 9189 if (!rdev->ops->testmode_dump) { 9190 err = -EOPNOTSUPP; 9191 goto out_err; 9192 } 9193 9194 while (1) { 9195 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 9196 cb->nlh->nlmsg_seq, NLM_F_MULTI, 9197 NL80211_CMD_TESTMODE); 9198 struct nlattr *tmdata; 9199 9200 if (!hdr) 9201 break; 9202 9203 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 9204 genlmsg_cancel(skb, hdr); 9205 break; 9206 } 9207 9208 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 9209 if (!tmdata) { 9210 genlmsg_cancel(skb, hdr); 9211 break; 9212 } 9213 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 9214 nla_nest_end(skb, tmdata); 9215 9216 if (err == -ENOBUFS || err == -ENOENT) { 9217 genlmsg_cancel(skb, hdr); 9218 break; 9219 } else if (err) { 9220 genlmsg_cancel(skb, hdr); 9221 goto out_err; 9222 } 9223 9224 genlmsg_end(skb, hdr); 9225 } 9226 9227 err = skb->len; 9228 /* see above */ 9229 cb->args[0] = phy_idx + 1; 9230 out_err: 9231 rtnl_unlock(); 9232 return err; 9233 } 9234 #endif 9235 9236 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 9237 { 9238 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9239 struct net_device *dev = info->user_ptr[1]; 9240 struct cfg80211_connect_params connect; 9241 struct wiphy *wiphy; 9242 struct cfg80211_cached_keys *connkeys = NULL; 9243 int err; 9244 9245 memset(&connect, 0, sizeof(connect)); 9246 9247 if (!info->attrs[NL80211_ATTR_SSID] || 9248 !nla_len(info->attrs[NL80211_ATTR_SSID])) 9249 return -EINVAL; 9250 9251 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 9252 connect.auth_type = 9253 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 9254 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 9255 NL80211_CMD_CONNECT)) 9256 return -EINVAL; 9257 } else 9258 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 9259 9260 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 9261 9262 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 9263 !wiphy_ext_feature_isset(&rdev->wiphy, 9264 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 9265 return -EINVAL; 9266 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 9267 9268 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 9269 NL80211_MAX_NR_CIPHER_SUITES); 9270 if (err) 9271 return err; 9272 9273 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9274 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9275 return -EOPNOTSUPP; 9276 9277 wiphy = &rdev->wiphy; 9278 9279 connect.bg_scan_period = -1; 9280 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 9281 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 9282 connect.bg_scan_period = 9283 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 9284 } 9285 9286 if (info->attrs[NL80211_ATTR_MAC]) 9287 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9288 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 9289 connect.bssid_hint = 9290 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 9291 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9292 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9293 9294 if (info->attrs[NL80211_ATTR_IE]) { 9295 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9296 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9297 } 9298 9299 if (info->attrs[NL80211_ATTR_USE_MFP]) { 9300 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 9301 if (connect.mfp == NL80211_MFP_OPTIONAL && 9302 !wiphy_ext_feature_isset(&rdev->wiphy, 9303 NL80211_EXT_FEATURE_MFP_OPTIONAL)) 9304 return -EOPNOTSUPP; 9305 } else { 9306 connect.mfp = NL80211_MFP_NO; 9307 } 9308 9309 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 9310 connect.prev_bssid = 9311 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 9312 9313 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9314 connect.channel = nl80211_get_valid_chan( 9315 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 9316 if (!connect.channel) 9317 return -EINVAL; 9318 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 9319 connect.channel_hint = nl80211_get_valid_chan( 9320 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 9321 if (!connect.channel_hint) 9322 return -EINVAL; 9323 } 9324 9325 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 9326 connkeys = nl80211_parse_connkeys(rdev, info, NULL); 9327 if (IS_ERR(connkeys)) 9328 return PTR_ERR(connkeys); 9329 } 9330 9331 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 9332 connect.flags |= ASSOC_REQ_DISABLE_HT; 9333 9334 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 9335 memcpy(&connect.ht_capa_mask, 9336 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 9337 sizeof(connect.ht_capa_mask)); 9338 9339 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 9340 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 9341 kzfree(connkeys); 9342 return -EINVAL; 9343 } 9344 memcpy(&connect.ht_capa, 9345 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 9346 sizeof(connect.ht_capa)); 9347 } 9348 9349 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 9350 connect.flags |= ASSOC_REQ_DISABLE_VHT; 9351 9352 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 9353 memcpy(&connect.vht_capa_mask, 9354 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 9355 sizeof(connect.vht_capa_mask)); 9356 9357 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 9358 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 9359 kzfree(connkeys); 9360 return -EINVAL; 9361 } 9362 memcpy(&connect.vht_capa, 9363 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 9364 sizeof(connect.vht_capa)); 9365 } 9366 9367 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 9368 if (!((rdev->wiphy.features & 9369 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 9370 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 9371 !wiphy_ext_feature_isset(&rdev->wiphy, 9372 NL80211_EXT_FEATURE_RRM)) { 9373 kzfree(connkeys); 9374 return -EINVAL; 9375 } 9376 connect.flags |= ASSOC_REQ_USE_RRM; 9377 } 9378 9379 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 9380 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 9381 kzfree(connkeys); 9382 return -EOPNOTSUPP; 9383 } 9384 9385 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 9386 /* bss selection makes no sense if bssid is set */ 9387 if (connect.bssid) { 9388 kzfree(connkeys); 9389 return -EINVAL; 9390 } 9391 9392 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 9393 wiphy, &connect.bss_select); 9394 if (err) { 9395 kzfree(connkeys); 9396 return err; 9397 } 9398 } 9399 9400 if (wiphy_ext_feature_isset(&rdev->wiphy, 9401 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 9402 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9403 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9404 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9405 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9406 connect.fils_erp_username = 9407 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9408 connect.fils_erp_username_len = 9409 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9410 connect.fils_erp_realm = 9411 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9412 connect.fils_erp_realm_len = 9413 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9414 connect.fils_erp_next_seq_num = 9415 nla_get_u16( 9416 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9417 connect.fils_erp_rrk = 9418 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9419 connect.fils_erp_rrk_len = 9420 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9421 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9422 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9423 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9424 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9425 kzfree(connkeys); 9426 return -EINVAL; 9427 } 9428 9429 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) { 9430 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9431 kzfree(connkeys); 9432 GENL_SET_ERR_MSG(info, 9433 "external auth requires connection ownership"); 9434 return -EINVAL; 9435 } 9436 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT; 9437 } 9438 9439 wdev_lock(dev->ieee80211_ptr); 9440 9441 err = cfg80211_connect(rdev, dev, &connect, connkeys, 9442 connect.prev_bssid); 9443 if (err) 9444 kzfree(connkeys); 9445 9446 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9447 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 9448 if (connect.bssid) 9449 memcpy(dev->ieee80211_ptr->disconnect_bssid, 9450 connect.bssid, ETH_ALEN); 9451 else 9452 memset(dev->ieee80211_ptr->disconnect_bssid, 9453 0, ETH_ALEN); 9454 } 9455 9456 wdev_unlock(dev->ieee80211_ptr); 9457 9458 return err; 9459 } 9460 9461 static int nl80211_update_connect_params(struct sk_buff *skb, 9462 struct genl_info *info) 9463 { 9464 struct cfg80211_connect_params connect = {}; 9465 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9466 struct net_device *dev = info->user_ptr[1]; 9467 struct wireless_dev *wdev = dev->ieee80211_ptr; 9468 bool fils_sk_offload; 9469 u32 auth_type; 9470 u32 changed = 0; 9471 int ret; 9472 9473 if (!rdev->ops->update_connect_params) 9474 return -EOPNOTSUPP; 9475 9476 if (info->attrs[NL80211_ATTR_IE]) { 9477 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9478 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9479 changed |= UPDATE_ASSOC_IES; 9480 } 9481 9482 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy, 9483 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD); 9484 9485 /* 9486 * when driver supports fils-sk offload all attributes must be 9487 * provided. So the else covers "fils-sk-not-all" and 9488 * "no-fils-sk-any". 9489 */ 9490 if (fils_sk_offload && 9491 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9492 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9493 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9494 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9495 connect.fils_erp_username = 9496 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9497 connect.fils_erp_username_len = 9498 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9499 connect.fils_erp_realm = 9500 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9501 connect.fils_erp_realm_len = 9502 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9503 connect.fils_erp_next_seq_num = 9504 nla_get_u16( 9505 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9506 connect.fils_erp_rrk = 9507 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9508 connect.fils_erp_rrk_len = 9509 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9510 changed |= UPDATE_FILS_ERP_INFO; 9511 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9512 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9513 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9514 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9515 return -EINVAL; 9516 } 9517 9518 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 9519 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 9520 if (!nl80211_valid_auth_type(rdev, auth_type, 9521 NL80211_CMD_CONNECT)) 9522 return -EINVAL; 9523 9524 if (auth_type == NL80211_AUTHTYPE_FILS_SK && 9525 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO)) 9526 return -EINVAL; 9527 9528 connect.auth_type = auth_type; 9529 changed |= UPDATE_AUTH_TYPE; 9530 } 9531 9532 wdev_lock(dev->ieee80211_ptr); 9533 if (!wdev->current_bss) 9534 ret = -ENOLINK; 9535 else 9536 ret = rdev_update_connect_params(rdev, dev, &connect, changed); 9537 wdev_unlock(dev->ieee80211_ptr); 9538 9539 return ret; 9540 } 9541 9542 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 9543 { 9544 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9545 struct net_device *dev = info->user_ptr[1]; 9546 u16 reason; 9547 int ret; 9548 9549 if (dev->ieee80211_ptr->conn_owner_nlportid && 9550 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 9551 return -EPERM; 9552 9553 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9554 reason = WLAN_REASON_DEAUTH_LEAVING; 9555 else 9556 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9557 9558 if (reason == 0) 9559 return -EINVAL; 9560 9561 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9562 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9563 return -EOPNOTSUPP; 9564 9565 wdev_lock(dev->ieee80211_ptr); 9566 ret = cfg80211_disconnect(rdev, dev, reason, true); 9567 wdev_unlock(dev->ieee80211_ptr); 9568 return ret; 9569 } 9570 9571 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 9572 { 9573 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9574 struct net *net; 9575 int err; 9576 9577 if (info->attrs[NL80211_ATTR_PID]) { 9578 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 9579 9580 net = get_net_ns_by_pid(pid); 9581 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 9582 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 9583 9584 net = get_net_ns_by_fd(fd); 9585 } else { 9586 return -EINVAL; 9587 } 9588 9589 if (IS_ERR(net)) 9590 return PTR_ERR(net); 9591 9592 err = 0; 9593 9594 /* check if anything to do */ 9595 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 9596 err = cfg80211_switch_netns(rdev, net); 9597 9598 put_net(net); 9599 return err; 9600 } 9601 9602 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 9603 { 9604 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9605 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 9606 struct cfg80211_pmksa *pmksa) = NULL; 9607 struct net_device *dev = info->user_ptr[1]; 9608 struct cfg80211_pmksa pmksa; 9609 9610 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 9611 9612 if (!info->attrs[NL80211_ATTR_PMKID]) 9613 return -EINVAL; 9614 9615 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 9616 9617 if (info->attrs[NL80211_ATTR_MAC]) { 9618 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9619 } else if (info->attrs[NL80211_ATTR_SSID] && 9620 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 9621 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA || 9622 info->attrs[NL80211_ATTR_PMK])) { 9623 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9624 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9625 pmksa.cache_id = 9626 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 9627 } else { 9628 return -EINVAL; 9629 } 9630 if (info->attrs[NL80211_ATTR_PMK]) { 9631 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 9632 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 9633 } 9634 9635 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9636 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9637 return -EOPNOTSUPP; 9638 9639 switch (info->genlhdr->cmd) { 9640 case NL80211_CMD_SET_PMKSA: 9641 rdev_ops = rdev->ops->set_pmksa; 9642 break; 9643 case NL80211_CMD_DEL_PMKSA: 9644 rdev_ops = rdev->ops->del_pmksa; 9645 break; 9646 default: 9647 WARN_ON(1); 9648 break; 9649 } 9650 9651 if (!rdev_ops) 9652 return -EOPNOTSUPP; 9653 9654 return rdev_ops(&rdev->wiphy, dev, &pmksa); 9655 } 9656 9657 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 9658 { 9659 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9660 struct net_device *dev = info->user_ptr[1]; 9661 9662 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9663 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9664 return -EOPNOTSUPP; 9665 9666 if (!rdev->ops->flush_pmksa) 9667 return -EOPNOTSUPP; 9668 9669 return rdev_flush_pmksa(rdev, dev); 9670 } 9671 9672 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 9673 { 9674 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9675 struct net_device *dev = info->user_ptr[1]; 9676 u8 action_code, dialog_token; 9677 u32 peer_capability = 0; 9678 u16 status_code; 9679 u8 *peer; 9680 bool initiator; 9681 9682 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9683 !rdev->ops->tdls_mgmt) 9684 return -EOPNOTSUPP; 9685 9686 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 9687 !info->attrs[NL80211_ATTR_STATUS_CODE] || 9688 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 9689 !info->attrs[NL80211_ATTR_IE] || 9690 !info->attrs[NL80211_ATTR_MAC]) 9691 return -EINVAL; 9692 9693 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9694 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 9695 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 9696 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 9697 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 9698 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 9699 peer_capability = 9700 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 9701 9702 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 9703 dialog_token, status_code, peer_capability, 9704 initiator, 9705 nla_data(info->attrs[NL80211_ATTR_IE]), 9706 nla_len(info->attrs[NL80211_ATTR_IE])); 9707 } 9708 9709 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 9710 { 9711 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9712 struct net_device *dev = info->user_ptr[1]; 9713 enum nl80211_tdls_operation operation; 9714 u8 *peer; 9715 9716 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9717 !rdev->ops->tdls_oper) 9718 return -EOPNOTSUPP; 9719 9720 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 9721 !info->attrs[NL80211_ATTR_MAC]) 9722 return -EINVAL; 9723 9724 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 9725 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9726 9727 return rdev_tdls_oper(rdev, dev, peer, operation); 9728 } 9729 9730 static int nl80211_remain_on_channel(struct sk_buff *skb, 9731 struct genl_info *info) 9732 { 9733 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9734 struct wireless_dev *wdev = info->user_ptr[1]; 9735 struct cfg80211_chan_def chandef; 9736 const struct cfg80211_chan_def *compat_chandef; 9737 struct sk_buff *msg; 9738 void *hdr; 9739 u64 cookie; 9740 u32 duration; 9741 int err; 9742 9743 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 9744 !info->attrs[NL80211_ATTR_DURATION]) 9745 return -EINVAL; 9746 9747 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9748 9749 if (!rdev->ops->remain_on_channel || 9750 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 9751 return -EOPNOTSUPP; 9752 9753 /* 9754 * We should be on that channel for at least a minimum amount of 9755 * time (10ms) but no longer than the driver supports. 9756 */ 9757 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9758 duration > rdev->wiphy.max_remain_on_channel_duration) 9759 return -EINVAL; 9760 9761 err = nl80211_parse_chandef(rdev, info, &chandef); 9762 if (err) 9763 return err; 9764 9765 wdev_lock(wdev); 9766 if (!cfg80211_off_channel_oper_allowed(wdev) && 9767 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) { 9768 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef, 9769 &chandef); 9770 if (compat_chandef != &chandef) { 9771 wdev_unlock(wdev); 9772 return -EBUSY; 9773 } 9774 } 9775 wdev_unlock(wdev); 9776 9777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9778 if (!msg) 9779 return -ENOMEM; 9780 9781 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9782 NL80211_CMD_REMAIN_ON_CHANNEL); 9783 if (!hdr) { 9784 err = -ENOBUFS; 9785 goto free_msg; 9786 } 9787 9788 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 9789 duration, &cookie); 9790 9791 if (err) 9792 goto free_msg; 9793 9794 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9795 NL80211_ATTR_PAD)) 9796 goto nla_put_failure; 9797 9798 genlmsg_end(msg, hdr); 9799 9800 return genlmsg_reply(msg, info); 9801 9802 nla_put_failure: 9803 err = -ENOBUFS; 9804 free_msg: 9805 nlmsg_free(msg); 9806 return err; 9807 } 9808 9809 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 9810 struct genl_info *info) 9811 { 9812 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9813 struct wireless_dev *wdev = info->user_ptr[1]; 9814 u64 cookie; 9815 9816 if (!info->attrs[NL80211_ATTR_COOKIE]) 9817 return -EINVAL; 9818 9819 if (!rdev->ops->cancel_remain_on_channel) 9820 return -EOPNOTSUPP; 9821 9822 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9823 9824 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 9825 } 9826 9827 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 9828 struct genl_info *info) 9829 { 9830 struct cfg80211_bitrate_mask mask; 9831 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9832 struct net_device *dev = info->user_ptr[1]; 9833 int err; 9834 9835 if (!rdev->ops->set_bitrate_mask) 9836 return -EOPNOTSUPP; 9837 9838 err = nl80211_parse_tx_bitrate_mask(info, &mask); 9839 if (err) 9840 return err; 9841 9842 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 9843 } 9844 9845 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 9846 { 9847 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9848 struct wireless_dev *wdev = info->user_ptr[1]; 9849 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 9850 9851 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 9852 return -EINVAL; 9853 9854 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 9855 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 9856 9857 switch (wdev->iftype) { 9858 case NL80211_IFTYPE_STATION: 9859 case NL80211_IFTYPE_ADHOC: 9860 case NL80211_IFTYPE_P2P_CLIENT: 9861 case NL80211_IFTYPE_AP: 9862 case NL80211_IFTYPE_AP_VLAN: 9863 case NL80211_IFTYPE_MESH_POINT: 9864 case NL80211_IFTYPE_P2P_GO: 9865 case NL80211_IFTYPE_P2P_DEVICE: 9866 break; 9867 case NL80211_IFTYPE_NAN: 9868 default: 9869 return -EOPNOTSUPP; 9870 } 9871 9872 /* not much point in registering if we can't reply */ 9873 if (!rdev->ops->mgmt_tx) 9874 return -EOPNOTSUPP; 9875 9876 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 9877 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 9878 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 9879 } 9880 9881 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 9882 { 9883 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9884 struct wireless_dev *wdev = info->user_ptr[1]; 9885 struct cfg80211_chan_def chandef; 9886 int err; 9887 void *hdr = NULL; 9888 u64 cookie; 9889 struct sk_buff *msg = NULL; 9890 struct cfg80211_mgmt_tx_params params = { 9891 .dont_wait_for_ack = 9892 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 9893 }; 9894 9895 if (!info->attrs[NL80211_ATTR_FRAME]) 9896 return -EINVAL; 9897 9898 if (!rdev->ops->mgmt_tx) 9899 return -EOPNOTSUPP; 9900 9901 switch (wdev->iftype) { 9902 case NL80211_IFTYPE_P2P_DEVICE: 9903 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9904 return -EINVAL; 9905 case NL80211_IFTYPE_STATION: 9906 case NL80211_IFTYPE_ADHOC: 9907 case NL80211_IFTYPE_P2P_CLIENT: 9908 case NL80211_IFTYPE_AP: 9909 case NL80211_IFTYPE_AP_VLAN: 9910 case NL80211_IFTYPE_MESH_POINT: 9911 case NL80211_IFTYPE_P2P_GO: 9912 break; 9913 case NL80211_IFTYPE_NAN: 9914 default: 9915 return -EOPNOTSUPP; 9916 } 9917 9918 if (info->attrs[NL80211_ATTR_DURATION]) { 9919 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9920 return -EINVAL; 9921 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9922 9923 /* 9924 * We should wait on the channel for at least a minimum amount 9925 * of time (10ms) but no longer than the driver supports. 9926 */ 9927 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9928 params.wait > rdev->wiphy.max_remain_on_channel_duration) 9929 return -EINVAL; 9930 } 9931 9932 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 9933 9934 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9935 return -EINVAL; 9936 9937 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 9938 9939 /* get the channel if any has been specified, otherwise pass NULL to 9940 * the driver. The latter will use the current one 9941 */ 9942 chandef.chan = NULL; 9943 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9944 err = nl80211_parse_chandef(rdev, info, &chandef); 9945 if (err) 9946 return err; 9947 } 9948 9949 if (!chandef.chan && params.offchan) 9950 return -EINVAL; 9951 9952 wdev_lock(wdev); 9953 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) { 9954 wdev_unlock(wdev); 9955 return -EBUSY; 9956 } 9957 wdev_unlock(wdev); 9958 9959 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 9960 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 9961 9962 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 9963 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9964 int i; 9965 9966 if (len % sizeof(u16)) 9967 return -EINVAL; 9968 9969 params.n_csa_offsets = len / sizeof(u16); 9970 params.csa_offsets = 9971 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9972 9973 /* check that all the offsets fit the frame */ 9974 for (i = 0; i < params.n_csa_offsets; i++) { 9975 if (params.csa_offsets[i] >= params.len) 9976 return -EINVAL; 9977 } 9978 } 9979 9980 if (!params.dont_wait_for_ack) { 9981 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9982 if (!msg) 9983 return -ENOMEM; 9984 9985 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9986 NL80211_CMD_FRAME); 9987 if (!hdr) { 9988 err = -ENOBUFS; 9989 goto free_msg; 9990 } 9991 } 9992 9993 params.chan = chandef.chan; 9994 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 9995 if (err) 9996 goto free_msg; 9997 9998 if (msg) { 9999 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 10000 NL80211_ATTR_PAD)) 10001 goto nla_put_failure; 10002 10003 genlmsg_end(msg, hdr); 10004 return genlmsg_reply(msg, info); 10005 } 10006 10007 return 0; 10008 10009 nla_put_failure: 10010 err = -ENOBUFS; 10011 free_msg: 10012 nlmsg_free(msg); 10013 return err; 10014 } 10015 10016 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 10017 { 10018 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10019 struct wireless_dev *wdev = info->user_ptr[1]; 10020 u64 cookie; 10021 10022 if (!info->attrs[NL80211_ATTR_COOKIE]) 10023 return -EINVAL; 10024 10025 if (!rdev->ops->mgmt_tx_cancel_wait) 10026 return -EOPNOTSUPP; 10027 10028 switch (wdev->iftype) { 10029 case NL80211_IFTYPE_STATION: 10030 case NL80211_IFTYPE_ADHOC: 10031 case NL80211_IFTYPE_P2P_CLIENT: 10032 case NL80211_IFTYPE_AP: 10033 case NL80211_IFTYPE_AP_VLAN: 10034 case NL80211_IFTYPE_P2P_GO: 10035 case NL80211_IFTYPE_P2P_DEVICE: 10036 break; 10037 case NL80211_IFTYPE_NAN: 10038 default: 10039 return -EOPNOTSUPP; 10040 } 10041 10042 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 10043 10044 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 10045 } 10046 10047 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 10048 { 10049 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10050 struct wireless_dev *wdev; 10051 struct net_device *dev = info->user_ptr[1]; 10052 u8 ps_state; 10053 bool state; 10054 int err; 10055 10056 if (!info->attrs[NL80211_ATTR_PS_STATE]) 10057 return -EINVAL; 10058 10059 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 10060 10061 wdev = dev->ieee80211_ptr; 10062 10063 if (!rdev->ops->set_power_mgmt) 10064 return -EOPNOTSUPP; 10065 10066 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 10067 10068 if (state == wdev->ps) 10069 return 0; 10070 10071 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 10072 if (!err) 10073 wdev->ps = state; 10074 return err; 10075 } 10076 10077 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 10078 { 10079 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10080 enum nl80211_ps_state ps_state; 10081 struct wireless_dev *wdev; 10082 struct net_device *dev = info->user_ptr[1]; 10083 struct sk_buff *msg; 10084 void *hdr; 10085 int err; 10086 10087 wdev = dev->ieee80211_ptr; 10088 10089 if (!rdev->ops->set_power_mgmt) 10090 return -EOPNOTSUPP; 10091 10092 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10093 if (!msg) 10094 return -ENOMEM; 10095 10096 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10097 NL80211_CMD_GET_POWER_SAVE); 10098 if (!hdr) { 10099 err = -ENOBUFS; 10100 goto free_msg; 10101 } 10102 10103 if (wdev->ps) 10104 ps_state = NL80211_PS_ENABLED; 10105 else 10106 ps_state = NL80211_PS_DISABLED; 10107 10108 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 10109 goto nla_put_failure; 10110 10111 genlmsg_end(msg, hdr); 10112 return genlmsg_reply(msg, info); 10113 10114 nla_put_failure: 10115 err = -ENOBUFS; 10116 free_msg: 10117 nlmsg_free(msg); 10118 return err; 10119 } 10120 10121 static const struct nla_policy 10122 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 10123 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 10124 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 10125 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 10126 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 10127 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 10128 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 10129 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 10130 }; 10131 10132 static int nl80211_set_cqm_txe(struct genl_info *info, 10133 u32 rate, u32 pkts, u32 intvl) 10134 { 10135 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10136 struct net_device *dev = info->user_ptr[1]; 10137 struct wireless_dev *wdev = dev->ieee80211_ptr; 10138 10139 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 10140 return -EINVAL; 10141 10142 if (!rdev->ops->set_cqm_txe_config) 10143 return -EOPNOTSUPP; 10144 10145 if (wdev->iftype != NL80211_IFTYPE_STATION && 10146 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 10147 return -EOPNOTSUPP; 10148 10149 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 10150 } 10151 10152 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 10153 struct net_device *dev) 10154 { 10155 struct wireless_dev *wdev = dev->ieee80211_ptr; 10156 s32 last, low, high; 10157 u32 hyst; 10158 int i, n, low_index; 10159 int err; 10160 10161 /* RSSI reporting disabled? */ 10162 if (!wdev->cqm_config) 10163 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 10164 10165 /* 10166 * Obtain current RSSI value if possible, if not and no RSSI threshold 10167 * event has been received yet, we should receive an event after a 10168 * connection is established and enough beacons received to calculate 10169 * the average. 10170 */ 10171 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss && 10172 rdev->ops->get_station) { 10173 struct station_info sinfo = {}; 10174 u8 *mac_addr; 10175 10176 mac_addr = wdev->current_bss->pub.bssid; 10177 10178 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 10179 if (err) 10180 return err; 10181 10182 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 10183 wdev->cqm_config->last_rssi_event_value = 10184 (s8) sinfo.rx_beacon_signal_avg; 10185 } 10186 10187 last = wdev->cqm_config->last_rssi_event_value; 10188 hyst = wdev->cqm_config->rssi_hyst; 10189 n = wdev->cqm_config->n_rssi_thresholds; 10190 10191 for (i = 0; i < n; i++) 10192 if (last < wdev->cqm_config->rssi_thresholds[i]) 10193 break; 10194 10195 low_index = i - 1; 10196 if (low_index >= 0) { 10197 low_index = array_index_nospec(low_index, n); 10198 low = wdev->cqm_config->rssi_thresholds[low_index] - hyst; 10199 } else { 10200 low = S32_MIN; 10201 } 10202 if (i < n) { 10203 i = array_index_nospec(i, n); 10204 high = wdev->cqm_config->rssi_thresholds[i] + hyst - 1; 10205 } else { 10206 high = S32_MAX; 10207 } 10208 10209 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 10210 } 10211 10212 static int nl80211_set_cqm_rssi(struct genl_info *info, 10213 const s32 *thresholds, int n_thresholds, 10214 u32 hysteresis) 10215 { 10216 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10217 struct net_device *dev = info->user_ptr[1]; 10218 struct wireless_dev *wdev = dev->ieee80211_ptr; 10219 int i, err; 10220 s32 prev = S32_MIN; 10221 10222 /* Check all values negative and sorted */ 10223 for (i = 0; i < n_thresholds; i++) { 10224 if (thresholds[i] > 0 || thresholds[i] <= prev) 10225 return -EINVAL; 10226 10227 prev = thresholds[i]; 10228 } 10229 10230 if (wdev->iftype != NL80211_IFTYPE_STATION && 10231 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 10232 return -EOPNOTSUPP; 10233 10234 wdev_lock(wdev); 10235 cfg80211_cqm_config_free(wdev); 10236 wdev_unlock(wdev); 10237 10238 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { 10239 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ 10240 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 10241 10242 return rdev_set_cqm_rssi_config(rdev, dev, 10243 thresholds[0], hysteresis); 10244 } 10245 10246 if (!wiphy_ext_feature_isset(&rdev->wiphy, 10247 NL80211_EXT_FEATURE_CQM_RSSI_LIST)) 10248 return -EOPNOTSUPP; 10249 10250 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 10251 n_thresholds = 0; 10252 10253 wdev_lock(wdev); 10254 if (n_thresholds) { 10255 struct cfg80211_cqm_config *cqm_config; 10256 10257 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) + 10258 n_thresholds * sizeof(s32), GFP_KERNEL); 10259 if (!cqm_config) { 10260 err = -ENOMEM; 10261 goto unlock; 10262 } 10263 10264 cqm_config->rssi_hyst = hysteresis; 10265 cqm_config->n_rssi_thresholds = n_thresholds; 10266 memcpy(cqm_config->rssi_thresholds, thresholds, 10267 n_thresholds * sizeof(s32)); 10268 10269 wdev->cqm_config = cqm_config; 10270 } 10271 10272 err = cfg80211_cqm_rssi_update(rdev, dev); 10273 10274 unlock: 10275 wdev_unlock(wdev); 10276 10277 return err; 10278 } 10279 10280 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 10281 { 10282 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 10283 struct nlattr *cqm; 10284 int err; 10285 10286 cqm = info->attrs[NL80211_ATTR_CQM]; 10287 if (!cqm) 10288 return -EINVAL; 10289 10290 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 10291 nl80211_attr_cqm_policy, info->extack); 10292 if (err) 10293 return err; 10294 10295 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 10296 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 10297 const s32 *thresholds = 10298 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 10299 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 10300 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 10301 10302 if (len % 4) 10303 return -EINVAL; 10304 10305 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 10306 hysteresis); 10307 } 10308 10309 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 10310 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 10311 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 10312 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 10313 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 10314 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 10315 10316 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 10317 } 10318 10319 return -EINVAL; 10320 } 10321 10322 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 10323 { 10324 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10325 struct net_device *dev = info->user_ptr[1]; 10326 struct ocb_setup setup = {}; 10327 int err; 10328 10329 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 10330 if (err) 10331 return err; 10332 10333 return cfg80211_join_ocb(rdev, dev, &setup); 10334 } 10335 10336 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 10337 { 10338 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10339 struct net_device *dev = info->user_ptr[1]; 10340 10341 return cfg80211_leave_ocb(rdev, dev); 10342 } 10343 10344 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 10345 { 10346 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10347 struct net_device *dev = info->user_ptr[1]; 10348 struct mesh_config cfg; 10349 struct mesh_setup setup; 10350 int err; 10351 10352 /* start with default */ 10353 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 10354 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 10355 10356 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 10357 /* and parse parameters if given */ 10358 err = nl80211_parse_mesh_config(info, &cfg, NULL); 10359 if (err) 10360 return err; 10361 } 10362 10363 if (!info->attrs[NL80211_ATTR_MESH_ID] || 10364 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 10365 return -EINVAL; 10366 10367 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 10368 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 10369 10370 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 10371 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 10372 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 10373 return -EINVAL; 10374 10375 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 10376 setup.beacon_interval = 10377 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 10378 10379 err = cfg80211_validate_beacon_int(rdev, 10380 NL80211_IFTYPE_MESH_POINT, 10381 setup.beacon_interval); 10382 if (err) 10383 return err; 10384 } 10385 10386 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 10387 setup.dtim_period = 10388 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 10389 if (setup.dtim_period < 1 || setup.dtim_period > 100) 10390 return -EINVAL; 10391 } 10392 10393 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 10394 /* parse additional setup parameters if given */ 10395 err = nl80211_parse_mesh_setup(info, &setup); 10396 if (err) 10397 return err; 10398 } 10399 10400 if (setup.user_mpm) 10401 cfg.auto_open_plinks = false; 10402 10403 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 10404 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 10405 if (err) 10406 return err; 10407 } else { 10408 /* __cfg80211_join_mesh() will sort it out */ 10409 setup.chandef.chan = NULL; 10410 } 10411 10412 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 10413 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10414 int n_rates = 10415 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10416 struct ieee80211_supported_band *sband; 10417 10418 if (!setup.chandef.chan) 10419 return -EINVAL; 10420 10421 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 10422 10423 err = ieee80211_get_ratemask(sband, rates, n_rates, 10424 &setup.basic_rates); 10425 if (err) 10426 return err; 10427 } 10428 10429 if (info->attrs[NL80211_ATTR_TX_RATES]) { 10430 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate); 10431 if (err) 10432 return err; 10433 10434 if (!setup.chandef.chan) 10435 return -EINVAL; 10436 10437 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 10438 &setup.beacon_rate); 10439 if (err) 10440 return err; 10441 } 10442 10443 setup.userspace_handles_dfs = 10444 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 10445 10446 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 10447 int r = validate_pae_over_nl80211(rdev, info); 10448 10449 if (r < 0) 10450 return r; 10451 10452 setup.control_port_over_nl80211 = true; 10453 } 10454 10455 wdev_lock(dev->ieee80211_ptr); 10456 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg); 10457 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) 10458 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 10459 wdev_unlock(dev->ieee80211_ptr); 10460 10461 return err; 10462 } 10463 10464 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 10465 { 10466 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10467 struct net_device *dev = info->user_ptr[1]; 10468 10469 return cfg80211_leave_mesh(rdev, dev); 10470 } 10471 10472 #ifdef CONFIG_PM 10473 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 10474 struct cfg80211_registered_device *rdev) 10475 { 10476 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 10477 struct nlattr *nl_pats, *nl_pat; 10478 int i, pat_len; 10479 10480 if (!wowlan->n_patterns) 10481 return 0; 10482 10483 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 10484 if (!nl_pats) 10485 return -ENOBUFS; 10486 10487 for (i = 0; i < wowlan->n_patterns; i++) { 10488 nl_pat = nla_nest_start(msg, i + 1); 10489 if (!nl_pat) 10490 return -ENOBUFS; 10491 pat_len = wowlan->patterns[i].pattern_len; 10492 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 10493 wowlan->patterns[i].mask) || 10494 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10495 wowlan->patterns[i].pattern) || 10496 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10497 wowlan->patterns[i].pkt_offset)) 10498 return -ENOBUFS; 10499 nla_nest_end(msg, nl_pat); 10500 } 10501 nla_nest_end(msg, nl_pats); 10502 10503 return 0; 10504 } 10505 10506 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 10507 struct cfg80211_wowlan_tcp *tcp) 10508 { 10509 struct nlattr *nl_tcp; 10510 10511 if (!tcp) 10512 return 0; 10513 10514 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 10515 if (!nl_tcp) 10516 return -ENOBUFS; 10517 10518 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 10519 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 10520 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 10521 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 10522 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 10523 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 10524 tcp->payload_len, tcp->payload) || 10525 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 10526 tcp->data_interval) || 10527 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 10528 tcp->wake_len, tcp->wake_data) || 10529 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 10530 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 10531 return -ENOBUFS; 10532 10533 if (tcp->payload_seq.len && 10534 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 10535 sizeof(tcp->payload_seq), &tcp->payload_seq)) 10536 return -ENOBUFS; 10537 10538 if (tcp->payload_tok.len && 10539 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 10540 sizeof(tcp->payload_tok) + tcp->tokens_size, 10541 &tcp->payload_tok)) 10542 return -ENOBUFS; 10543 10544 nla_nest_end(msg, nl_tcp); 10545 10546 return 0; 10547 } 10548 10549 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 10550 struct cfg80211_sched_scan_request *req) 10551 { 10552 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 10553 int i; 10554 10555 if (!req) 10556 return 0; 10557 10558 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 10559 if (!nd) 10560 return -ENOBUFS; 10561 10562 if (req->n_scan_plans == 1 && 10563 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 10564 req->scan_plans[0].interval * 1000)) 10565 return -ENOBUFS; 10566 10567 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 10568 return -ENOBUFS; 10569 10570 if (req->relative_rssi_set) { 10571 struct nl80211_bss_select_rssi_adjust rssi_adjust; 10572 10573 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 10574 req->relative_rssi)) 10575 return -ENOBUFS; 10576 10577 rssi_adjust.band = req->rssi_adjust.band; 10578 rssi_adjust.delta = req->rssi_adjust.delta; 10579 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 10580 sizeof(rssi_adjust), &rssi_adjust)) 10581 return -ENOBUFS; 10582 } 10583 10584 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 10585 if (!freqs) 10586 return -ENOBUFS; 10587 10588 for (i = 0; i < req->n_channels; i++) { 10589 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 10590 return -ENOBUFS; 10591 } 10592 10593 nla_nest_end(msg, freqs); 10594 10595 if (req->n_match_sets) { 10596 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 10597 if (!matches) 10598 return -ENOBUFS; 10599 10600 for (i = 0; i < req->n_match_sets; i++) { 10601 match = nla_nest_start(msg, i); 10602 if (!match) 10603 return -ENOBUFS; 10604 10605 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 10606 req->match_sets[i].ssid.ssid_len, 10607 req->match_sets[i].ssid.ssid)) 10608 return -ENOBUFS; 10609 nla_nest_end(msg, match); 10610 } 10611 nla_nest_end(msg, matches); 10612 } 10613 10614 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 10615 if (!scan_plans) 10616 return -ENOBUFS; 10617 10618 for (i = 0; i < req->n_scan_plans; i++) { 10619 scan_plan = nla_nest_start(msg, i + 1); 10620 if (!scan_plan) 10621 return -ENOBUFS; 10622 10623 if (nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 10624 req->scan_plans[i].interval) || 10625 (req->scan_plans[i].iterations && 10626 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 10627 req->scan_plans[i].iterations))) 10628 return -ENOBUFS; 10629 nla_nest_end(msg, scan_plan); 10630 } 10631 nla_nest_end(msg, scan_plans); 10632 10633 nla_nest_end(msg, nd); 10634 10635 return 0; 10636 } 10637 10638 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 10639 { 10640 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10641 struct sk_buff *msg; 10642 void *hdr; 10643 u32 size = NLMSG_DEFAULT_SIZE; 10644 10645 if (!rdev->wiphy.wowlan) 10646 return -EOPNOTSUPP; 10647 10648 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 10649 /* adjust size to have room for all the data */ 10650 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 10651 rdev->wiphy.wowlan_config->tcp->payload_len + 10652 rdev->wiphy.wowlan_config->tcp->wake_len + 10653 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 10654 } 10655 10656 msg = nlmsg_new(size, GFP_KERNEL); 10657 if (!msg) 10658 return -ENOMEM; 10659 10660 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10661 NL80211_CMD_GET_WOWLAN); 10662 if (!hdr) 10663 goto nla_put_failure; 10664 10665 if (rdev->wiphy.wowlan_config) { 10666 struct nlattr *nl_wowlan; 10667 10668 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10669 if (!nl_wowlan) 10670 goto nla_put_failure; 10671 10672 if ((rdev->wiphy.wowlan_config->any && 10673 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 10674 (rdev->wiphy.wowlan_config->disconnect && 10675 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 10676 (rdev->wiphy.wowlan_config->magic_pkt && 10677 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 10678 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 10679 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 10680 (rdev->wiphy.wowlan_config->eap_identity_req && 10681 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 10682 (rdev->wiphy.wowlan_config->four_way_handshake && 10683 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 10684 (rdev->wiphy.wowlan_config->rfkill_release && 10685 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 10686 goto nla_put_failure; 10687 10688 if (nl80211_send_wowlan_patterns(msg, rdev)) 10689 goto nla_put_failure; 10690 10691 if (nl80211_send_wowlan_tcp(msg, 10692 rdev->wiphy.wowlan_config->tcp)) 10693 goto nla_put_failure; 10694 10695 if (nl80211_send_wowlan_nd( 10696 msg, 10697 rdev->wiphy.wowlan_config->nd_config)) 10698 goto nla_put_failure; 10699 10700 nla_nest_end(msg, nl_wowlan); 10701 } 10702 10703 genlmsg_end(msg, hdr); 10704 return genlmsg_reply(msg, info); 10705 10706 nla_put_failure: 10707 nlmsg_free(msg); 10708 return -ENOBUFS; 10709 } 10710 10711 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 10712 struct nlattr *attr, 10713 struct cfg80211_wowlan *trig) 10714 { 10715 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 10716 struct cfg80211_wowlan_tcp *cfg; 10717 struct nl80211_wowlan_tcp_data_token *tok = NULL; 10718 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 10719 u32 size; 10720 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 10721 int err, port; 10722 10723 if (!rdev->wiphy.wowlan->tcp) 10724 return -EINVAL; 10725 10726 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr, 10727 nl80211_wowlan_tcp_policy, NULL); 10728 if (err) 10729 return err; 10730 10731 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 10732 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 10733 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 10734 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 10735 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 10736 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 10737 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 10738 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 10739 return -EINVAL; 10740 10741 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 10742 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 10743 return -EINVAL; 10744 10745 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 10746 rdev->wiphy.wowlan->tcp->data_interval_max || 10747 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 10748 return -EINVAL; 10749 10750 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 10751 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 10752 return -EINVAL; 10753 10754 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 10755 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 10756 return -EINVAL; 10757 10758 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 10759 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10760 10761 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10762 tokens_size = tokln - sizeof(*tok); 10763 10764 if (!tok->len || tokens_size % tok->len) 10765 return -EINVAL; 10766 if (!rdev->wiphy.wowlan->tcp->tok) 10767 return -EINVAL; 10768 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 10769 return -EINVAL; 10770 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 10771 return -EINVAL; 10772 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 10773 return -EINVAL; 10774 if (tok->offset + tok->len > data_size) 10775 return -EINVAL; 10776 } 10777 10778 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 10779 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 10780 if (!rdev->wiphy.wowlan->tcp->seq) 10781 return -EINVAL; 10782 if (seq->len == 0 || seq->len > 4) 10783 return -EINVAL; 10784 if (seq->len + seq->offset > data_size) 10785 return -EINVAL; 10786 } 10787 10788 size = sizeof(*cfg); 10789 size += data_size; 10790 size += wake_size + wake_mask_size; 10791 size += tokens_size; 10792 10793 cfg = kzalloc(size, GFP_KERNEL); 10794 if (!cfg) 10795 return -ENOMEM; 10796 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 10797 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 10798 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 10799 ETH_ALEN); 10800 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 10801 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 10802 else 10803 port = 0; 10804 #ifdef CONFIG_INET 10805 /* allocate a socket and port for it and use it */ 10806 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 10807 IPPROTO_TCP, &cfg->sock, 1); 10808 if (err) { 10809 kfree(cfg); 10810 return err; 10811 } 10812 if (inet_csk_get_port(cfg->sock->sk, port)) { 10813 sock_release(cfg->sock); 10814 kfree(cfg); 10815 return -EADDRINUSE; 10816 } 10817 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 10818 #else 10819 if (!port) { 10820 kfree(cfg); 10821 return -EINVAL; 10822 } 10823 cfg->src_port = port; 10824 #endif 10825 10826 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 10827 cfg->payload_len = data_size; 10828 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 10829 memcpy((void *)cfg->payload, 10830 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 10831 data_size); 10832 if (seq) 10833 cfg->payload_seq = *seq; 10834 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 10835 cfg->wake_len = wake_size; 10836 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 10837 memcpy((void *)cfg->wake_data, 10838 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 10839 wake_size); 10840 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 10841 data_size + wake_size; 10842 memcpy((void *)cfg->wake_mask, 10843 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 10844 wake_mask_size); 10845 if (tok) { 10846 cfg->tokens_size = tokens_size; 10847 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 10848 } 10849 10850 trig->tcp = cfg; 10851 10852 return 0; 10853 } 10854 10855 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 10856 const struct wiphy_wowlan_support *wowlan, 10857 struct nlattr *attr, 10858 struct cfg80211_wowlan *trig) 10859 { 10860 struct nlattr **tb; 10861 int err; 10862 10863 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 10864 if (!tb) 10865 return -ENOMEM; 10866 10867 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 10868 err = -EOPNOTSUPP; 10869 goto out; 10870 } 10871 10872 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy, 10873 NULL); 10874 if (err) 10875 goto out; 10876 10877 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 10878 wowlan->max_nd_match_sets); 10879 err = PTR_ERR_OR_ZERO(trig->nd_config); 10880 if (err) 10881 trig->nd_config = NULL; 10882 10883 out: 10884 kfree(tb); 10885 return err; 10886 } 10887 10888 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 10889 { 10890 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10891 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 10892 struct cfg80211_wowlan new_triggers = {}; 10893 struct cfg80211_wowlan *ntrig; 10894 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 10895 int err, i; 10896 bool prev_enabled = rdev->wiphy.wowlan_config; 10897 bool regular = false; 10898 10899 if (!wowlan) 10900 return -EOPNOTSUPP; 10901 10902 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 10903 cfg80211_rdev_free_wowlan(rdev); 10904 rdev->wiphy.wowlan_config = NULL; 10905 goto set_wakeup; 10906 } 10907 10908 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG, 10909 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 10910 nl80211_wowlan_policy, info->extack); 10911 if (err) 10912 return err; 10913 10914 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 10915 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 10916 return -EINVAL; 10917 new_triggers.any = true; 10918 } 10919 10920 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 10921 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 10922 return -EINVAL; 10923 new_triggers.disconnect = true; 10924 regular = true; 10925 } 10926 10927 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 10928 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 10929 return -EINVAL; 10930 new_triggers.magic_pkt = true; 10931 regular = true; 10932 } 10933 10934 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 10935 return -EINVAL; 10936 10937 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 10938 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 10939 return -EINVAL; 10940 new_triggers.gtk_rekey_failure = true; 10941 regular = true; 10942 } 10943 10944 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 10945 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 10946 return -EINVAL; 10947 new_triggers.eap_identity_req = true; 10948 regular = true; 10949 } 10950 10951 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 10952 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 10953 return -EINVAL; 10954 new_triggers.four_way_handshake = true; 10955 regular = true; 10956 } 10957 10958 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 10959 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 10960 return -EINVAL; 10961 new_triggers.rfkill_release = true; 10962 regular = true; 10963 } 10964 10965 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 10966 struct nlattr *pat; 10967 int n_patterns = 0; 10968 int rem, pat_len, mask_len, pkt_offset; 10969 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10970 10971 regular = true; 10972 10973 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10974 rem) 10975 n_patterns++; 10976 if (n_patterns > wowlan->n_patterns) 10977 return -EINVAL; 10978 10979 new_triggers.patterns = kcalloc(n_patterns, 10980 sizeof(new_triggers.patterns[0]), 10981 GFP_KERNEL); 10982 if (!new_triggers.patterns) 10983 return -ENOMEM; 10984 10985 new_triggers.n_patterns = n_patterns; 10986 i = 0; 10987 10988 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10989 rem) { 10990 u8 *mask_pat; 10991 10992 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 10993 nl80211_packet_pattern_policy, 10994 info->extack); 10995 if (err) 10996 goto error; 10997 10998 err = -EINVAL; 10999 if (!pat_tb[NL80211_PKTPAT_MASK] || 11000 !pat_tb[NL80211_PKTPAT_PATTERN]) 11001 goto error; 11002 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 11003 mask_len = DIV_ROUND_UP(pat_len, 8); 11004 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 11005 goto error; 11006 if (pat_len > wowlan->pattern_max_len || 11007 pat_len < wowlan->pattern_min_len) 11008 goto error; 11009 11010 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 11011 pkt_offset = 0; 11012 else 11013 pkt_offset = nla_get_u32( 11014 pat_tb[NL80211_PKTPAT_OFFSET]); 11015 if (pkt_offset > wowlan->max_pkt_offset) 11016 goto error; 11017 new_triggers.patterns[i].pkt_offset = pkt_offset; 11018 11019 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 11020 if (!mask_pat) { 11021 err = -ENOMEM; 11022 goto error; 11023 } 11024 new_triggers.patterns[i].mask = mask_pat; 11025 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 11026 mask_len); 11027 mask_pat += mask_len; 11028 new_triggers.patterns[i].pattern = mask_pat; 11029 new_triggers.patterns[i].pattern_len = pat_len; 11030 memcpy(mask_pat, 11031 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 11032 pat_len); 11033 i++; 11034 } 11035 } 11036 11037 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 11038 regular = true; 11039 err = nl80211_parse_wowlan_tcp( 11040 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 11041 &new_triggers); 11042 if (err) 11043 goto error; 11044 } 11045 11046 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 11047 regular = true; 11048 err = nl80211_parse_wowlan_nd( 11049 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 11050 &new_triggers); 11051 if (err) 11052 goto error; 11053 } 11054 11055 /* The 'any' trigger means the device continues operating more or less 11056 * as in its normal operation mode and wakes up the host on most of the 11057 * normal interrupts (like packet RX, ...) 11058 * It therefore makes little sense to combine with the more constrained 11059 * wakeup trigger modes. 11060 */ 11061 if (new_triggers.any && regular) { 11062 err = -EINVAL; 11063 goto error; 11064 } 11065 11066 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 11067 if (!ntrig) { 11068 err = -ENOMEM; 11069 goto error; 11070 } 11071 cfg80211_rdev_free_wowlan(rdev); 11072 rdev->wiphy.wowlan_config = ntrig; 11073 11074 set_wakeup: 11075 if (rdev->ops->set_wakeup && 11076 prev_enabled != !!rdev->wiphy.wowlan_config) 11077 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 11078 11079 return 0; 11080 error: 11081 for (i = 0; i < new_triggers.n_patterns; i++) 11082 kfree(new_triggers.patterns[i].mask); 11083 kfree(new_triggers.patterns); 11084 if (new_triggers.tcp && new_triggers.tcp->sock) 11085 sock_release(new_triggers.tcp->sock); 11086 kfree(new_triggers.tcp); 11087 kfree(new_triggers.nd_config); 11088 return err; 11089 } 11090 #endif 11091 11092 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 11093 struct cfg80211_registered_device *rdev) 11094 { 11095 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 11096 int i, j, pat_len; 11097 struct cfg80211_coalesce_rules *rule; 11098 11099 if (!rdev->coalesce->n_rules) 11100 return 0; 11101 11102 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 11103 if (!nl_rules) 11104 return -ENOBUFS; 11105 11106 for (i = 0; i < rdev->coalesce->n_rules; i++) { 11107 nl_rule = nla_nest_start(msg, i + 1); 11108 if (!nl_rule) 11109 return -ENOBUFS; 11110 11111 rule = &rdev->coalesce->rules[i]; 11112 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 11113 rule->delay)) 11114 return -ENOBUFS; 11115 11116 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 11117 rule->condition)) 11118 return -ENOBUFS; 11119 11120 nl_pats = nla_nest_start(msg, 11121 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 11122 if (!nl_pats) 11123 return -ENOBUFS; 11124 11125 for (j = 0; j < rule->n_patterns; j++) { 11126 nl_pat = nla_nest_start(msg, j + 1); 11127 if (!nl_pat) 11128 return -ENOBUFS; 11129 pat_len = rule->patterns[j].pattern_len; 11130 if (nla_put(msg, NL80211_PKTPAT_MASK, 11131 DIV_ROUND_UP(pat_len, 8), 11132 rule->patterns[j].mask) || 11133 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 11134 rule->patterns[j].pattern) || 11135 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 11136 rule->patterns[j].pkt_offset)) 11137 return -ENOBUFS; 11138 nla_nest_end(msg, nl_pat); 11139 } 11140 nla_nest_end(msg, nl_pats); 11141 nla_nest_end(msg, nl_rule); 11142 } 11143 nla_nest_end(msg, nl_rules); 11144 11145 return 0; 11146 } 11147 11148 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 11149 { 11150 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11151 struct sk_buff *msg; 11152 void *hdr; 11153 11154 if (!rdev->wiphy.coalesce) 11155 return -EOPNOTSUPP; 11156 11157 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11158 if (!msg) 11159 return -ENOMEM; 11160 11161 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11162 NL80211_CMD_GET_COALESCE); 11163 if (!hdr) 11164 goto nla_put_failure; 11165 11166 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 11167 goto nla_put_failure; 11168 11169 genlmsg_end(msg, hdr); 11170 return genlmsg_reply(msg, info); 11171 11172 nla_put_failure: 11173 nlmsg_free(msg); 11174 return -ENOBUFS; 11175 } 11176 11177 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 11178 { 11179 struct cfg80211_coalesce *coalesce = rdev->coalesce; 11180 int i, j; 11181 struct cfg80211_coalesce_rules *rule; 11182 11183 if (!coalesce) 11184 return; 11185 11186 for (i = 0; i < coalesce->n_rules; i++) { 11187 rule = &coalesce->rules[i]; 11188 for (j = 0; j < rule->n_patterns; j++) 11189 kfree(rule->patterns[j].mask); 11190 kfree(rule->patterns); 11191 } 11192 kfree(coalesce->rules); 11193 kfree(coalesce); 11194 rdev->coalesce = NULL; 11195 } 11196 11197 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 11198 struct nlattr *rule, 11199 struct cfg80211_coalesce_rules *new_rule) 11200 { 11201 int err, i; 11202 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 11203 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 11204 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 11205 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 11206 11207 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule, 11208 nl80211_coalesce_policy, NULL); 11209 if (err) 11210 return err; 11211 11212 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 11213 new_rule->delay = 11214 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 11215 if (new_rule->delay > coalesce->max_delay) 11216 return -EINVAL; 11217 11218 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 11219 new_rule->condition = 11220 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 11221 11222 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 11223 return -EINVAL; 11224 11225 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 11226 rem) 11227 n_patterns++; 11228 if (n_patterns > coalesce->n_patterns) 11229 return -EINVAL; 11230 11231 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 11232 GFP_KERNEL); 11233 if (!new_rule->patterns) 11234 return -ENOMEM; 11235 11236 new_rule->n_patterns = n_patterns; 11237 i = 0; 11238 11239 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 11240 rem) { 11241 u8 *mask_pat; 11242 11243 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 11244 nl80211_packet_pattern_policy, NULL); 11245 if (err) 11246 return err; 11247 11248 if (!pat_tb[NL80211_PKTPAT_MASK] || 11249 !pat_tb[NL80211_PKTPAT_PATTERN]) 11250 return -EINVAL; 11251 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 11252 mask_len = DIV_ROUND_UP(pat_len, 8); 11253 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 11254 return -EINVAL; 11255 if (pat_len > coalesce->pattern_max_len || 11256 pat_len < coalesce->pattern_min_len) 11257 return -EINVAL; 11258 11259 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 11260 pkt_offset = 0; 11261 else 11262 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 11263 if (pkt_offset > coalesce->max_pkt_offset) 11264 return -EINVAL; 11265 new_rule->patterns[i].pkt_offset = pkt_offset; 11266 11267 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 11268 if (!mask_pat) 11269 return -ENOMEM; 11270 11271 new_rule->patterns[i].mask = mask_pat; 11272 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 11273 mask_len); 11274 11275 mask_pat += mask_len; 11276 new_rule->patterns[i].pattern = mask_pat; 11277 new_rule->patterns[i].pattern_len = pat_len; 11278 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 11279 pat_len); 11280 i++; 11281 } 11282 11283 return 0; 11284 } 11285 11286 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 11287 { 11288 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11289 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 11290 struct cfg80211_coalesce new_coalesce = {}; 11291 struct cfg80211_coalesce *n_coalesce; 11292 int err, rem_rule, n_rules = 0, i, j; 11293 struct nlattr *rule; 11294 struct cfg80211_coalesce_rules *tmp_rule; 11295 11296 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 11297 return -EOPNOTSUPP; 11298 11299 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 11300 cfg80211_rdev_free_coalesce(rdev); 11301 rdev_set_coalesce(rdev, NULL); 11302 return 0; 11303 } 11304 11305 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 11306 rem_rule) 11307 n_rules++; 11308 if (n_rules > coalesce->n_rules) 11309 return -EINVAL; 11310 11311 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 11312 GFP_KERNEL); 11313 if (!new_coalesce.rules) 11314 return -ENOMEM; 11315 11316 new_coalesce.n_rules = n_rules; 11317 i = 0; 11318 11319 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 11320 rem_rule) { 11321 err = nl80211_parse_coalesce_rule(rdev, rule, 11322 &new_coalesce.rules[i]); 11323 if (err) 11324 goto error; 11325 11326 i++; 11327 } 11328 11329 err = rdev_set_coalesce(rdev, &new_coalesce); 11330 if (err) 11331 goto error; 11332 11333 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 11334 if (!n_coalesce) { 11335 err = -ENOMEM; 11336 goto error; 11337 } 11338 cfg80211_rdev_free_coalesce(rdev); 11339 rdev->coalesce = n_coalesce; 11340 11341 return 0; 11342 error: 11343 for (i = 0; i < new_coalesce.n_rules; i++) { 11344 tmp_rule = &new_coalesce.rules[i]; 11345 for (j = 0; j < tmp_rule->n_patterns; j++) 11346 kfree(tmp_rule->patterns[j].mask); 11347 kfree(tmp_rule->patterns); 11348 } 11349 kfree(new_coalesce.rules); 11350 11351 return err; 11352 } 11353 11354 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 11355 { 11356 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11357 struct net_device *dev = info->user_ptr[1]; 11358 struct wireless_dev *wdev = dev->ieee80211_ptr; 11359 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 11360 struct cfg80211_gtk_rekey_data rekey_data; 11361 int err; 11362 11363 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 11364 return -EINVAL; 11365 11366 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA, 11367 info->attrs[NL80211_ATTR_REKEY_DATA], 11368 nl80211_rekey_policy, info->extack); 11369 if (err) 11370 return err; 11371 11372 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 11373 !tb[NL80211_REKEY_DATA_KCK]) 11374 return -EINVAL; 11375 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 11376 return -ERANGE; 11377 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 11378 return -ERANGE; 11379 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 11380 return -ERANGE; 11381 11382 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 11383 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 11384 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 11385 11386 wdev_lock(wdev); 11387 if (!wdev->current_bss) { 11388 err = -ENOTCONN; 11389 goto out; 11390 } 11391 11392 if (!rdev->ops->set_rekey_data) { 11393 err = -EOPNOTSUPP; 11394 goto out; 11395 } 11396 11397 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 11398 out: 11399 wdev_unlock(wdev); 11400 return err; 11401 } 11402 11403 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 11404 struct genl_info *info) 11405 { 11406 struct net_device *dev = info->user_ptr[1]; 11407 struct wireless_dev *wdev = dev->ieee80211_ptr; 11408 11409 if (wdev->iftype != NL80211_IFTYPE_AP && 11410 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11411 return -EINVAL; 11412 11413 if (wdev->ap_unexpected_nlportid) 11414 return -EBUSY; 11415 11416 wdev->ap_unexpected_nlportid = info->snd_portid; 11417 return 0; 11418 } 11419 11420 static int nl80211_probe_client(struct sk_buff *skb, 11421 struct genl_info *info) 11422 { 11423 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11424 struct net_device *dev = info->user_ptr[1]; 11425 struct wireless_dev *wdev = dev->ieee80211_ptr; 11426 struct sk_buff *msg; 11427 void *hdr; 11428 const u8 *addr; 11429 u64 cookie; 11430 int err; 11431 11432 if (wdev->iftype != NL80211_IFTYPE_AP && 11433 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11434 return -EOPNOTSUPP; 11435 11436 if (!info->attrs[NL80211_ATTR_MAC]) 11437 return -EINVAL; 11438 11439 if (!rdev->ops->probe_client) 11440 return -EOPNOTSUPP; 11441 11442 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11443 if (!msg) 11444 return -ENOMEM; 11445 11446 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11447 NL80211_CMD_PROBE_CLIENT); 11448 if (!hdr) { 11449 err = -ENOBUFS; 11450 goto free_msg; 11451 } 11452 11453 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 11454 11455 err = rdev_probe_client(rdev, dev, addr, &cookie); 11456 if (err) 11457 goto free_msg; 11458 11459 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11460 NL80211_ATTR_PAD)) 11461 goto nla_put_failure; 11462 11463 genlmsg_end(msg, hdr); 11464 11465 return genlmsg_reply(msg, info); 11466 11467 nla_put_failure: 11468 err = -ENOBUFS; 11469 free_msg: 11470 nlmsg_free(msg); 11471 return err; 11472 } 11473 11474 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 11475 { 11476 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11477 struct cfg80211_beacon_registration *reg, *nreg; 11478 int rv; 11479 11480 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 11481 return -EOPNOTSUPP; 11482 11483 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 11484 if (!nreg) 11485 return -ENOMEM; 11486 11487 /* First, check if already registered. */ 11488 spin_lock_bh(&rdev->beacon_registrations_lock); 11489 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11490 if (reg->nlportid == info->snd_portid) { 11491 rv = -EALREADY; 11492 goto out_err; 11493 } 11494 } 11495 /* Add it to the list */ 11496 nreg->nlportid = info->snd_portid; 11497 list_add(&nreg->list, &rdev->beacon_registrations); 11498 11499 spin_unlock_bh(&rdev->beacon_registrations_lock); 11500 11501 return 0; 11502 out_err: 11503 spin_unlock_bh(&rdev->beacon_registrations_lock); 11504 kfree(nreg); 11505 return rv; 11506 } 11507 11508 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 11509 { 11510 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11511 struct wireless_dev *wdev = info->user_ptr[1]; 11512 int err; 11513 11514 if (!rdev->ops->start_p2p_device) 11515 return -EOPNOTSUPP; 11516 11517 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11518 return -EOPNOTSUPP; 11519 11520 if (wdev_running(wdev)) 11521 return 0; 11522 11523 if (rfkill_blocked(rdev->rfkill)) 11524 return -ERFKILL; 11525 11526 err = rdev_start_p2p_device(rdev, wdev); 11527 if (err) 11528 return err; 11529 11530 wdev->is_running = true; 11531 rdev->opencount++; 11532 11533 return 0; 11534 } 11535 11536 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 11537 { 11538 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11539 struct wireless_dev *wdev = info->user_ptr[1]; 11540 11541 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11542 return -EOPNOTSUPP; 11543 11544 if (!rdev->ops->stop_p2p_device) 11545 return -EOPNOTSUPP; 11546 11547 cfg80211_stop_p2p_device(rdev, wdev); 11548 11549 return 0; 11550 } 11551 11552 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 11553 { 11554 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11555 struct wireless_dev *wdev = info->user_ptr[1]; 11556 struct cfg80211_nan_conf conf = {}; 11557 int err; 11558 11559 if (wdev->iftype != NL80211_IFTYPE_NAN) 11560 return -EOPNOTSUPP; 11561 11562 if (wdev_running(wdev)) 11563 return -EEXIST; 11564 11565 if (rfkill_blocked(rdev->rfkill)) 11566 return -ERFKILL; 11567 11568 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 11569 return -EINVAL; 11570 11571 conf.master_pref = 11572 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11573 11574 if (info->attrs[NL80211_ATTR_BANDS]) { 11575 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11576 11577 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11578 return -EOPNOTSUPP; 11579 11580 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11581 return -EINVAL; 11582 11583 conf.bands = bands; 11584 } 11585 11586 err = rdev_start_nan(rdev, wdev, &conf); 11587 if (err) 11588 return err; 11589 11590 wdev->is_running = true; 11591 rdev->opencount++; 11592 11593 return 0; 11594 } 11595 11596 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 11597 { 11598 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11599 struct wireless_dev *wdev = info->user_ptr[1]; 11600 11601 if (wdev->iftype != NL80211_IFTYPE_NAN) 11602 return -EOPNOTSUPP; 11603 11604 cfg80211_stop_nan(rdev, wdev); 11605 11606 return 0; 11607 } 11608 11609 static int validate_nan_filter(struct nlattr *filter_attr) 11610 { 11611 struct nlattr *attr; 11612 int len = 0, n_entries = 0, rem; 11613 11614 nla_for_each_nested(attr, filter_attr, rem) { 11615 len += nla_len(attr); 11616 n_entries++; 11617 } 11618 11619 if (len >= U8_MAX) 11620 return -EINVAL; 11621 11622 return n_entries; 11623 } 11624 11625 static int handle_nan_filter(struct nlattr *attr_filter, 11626 struct cfg80211_nan_func *func, 11627 bool tx) 11628 { 11629 struct nlattr *attr; 11630 int n_entries, rem, i; 11631 struct cfg80211_nan_func_filter *filter; 11632 11633 n_entries = validate_nan_filter(attr_filter); 11634 if (n_entries < 0) 11635 return n_entries; 11636 11637 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 11638 11639 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 11640 if (!filter) 11641 return -ENOMEM; 11642 11643 i = 0; 11644 nla_for_each_nested(attr, attr_filter, rem) { 11645 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 11646 filter[i].len = nla_len(attr); 11647 i++; 11648 } 11649 if (tx) { 11650 func->num_tx_filters = n_entries; 11651 func->tx_filters = filter; 11652 } else { 11653 func->num_rx_filters = n_entries; 11654 func->rx_filters = filter; 11655 } 11656 11657 return 0; 11658 } 11659 11660 static int nl80211_nan_add_func(struct sk_buff *skb, 11661 struct genl_info *info) 11662 { 11663 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11664 struct wireless_dev *wdev = info->user_ptr[1]; 11665 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 11666 struct cfg80211_nan_func *func; 11667 struct sk_buff *msg = NULL; 11668 void *hdr = NULL; 11669 int err = 0; 11670 11671 if (wdev->iftype != NL80211_IFTYPE_NAN) 11672 return -EOPNOTSUPP; 11673 11674 if (!wdev_running(wdev)) 11675 return -ENOTCONN; 11676 11677 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 11678 return -EINVAL; 11679 11680 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX, 11681 info->attrs[NL80211_ATTR_NAN_FUNC], 11682 nl80211_nan_func_policy, info->extack); 11683 if (err) 11684 return err; 11685 11686 func = kzalloc(sizeof(*func), GFP_KERNEL); 11687 if (!func) 11688 return -ENOMEM; 11689 11690 func->cookie = cfg80211_assign_cookie(rdev); 11691 11692 if (!tb[NL80211_NAN_FUNC_TYPE] || 11693 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) { 11694 err = -EINVAL; 11695 goto out; 11696 } 11697 11698 11699 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 11700 11701 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 11702 err = -EINVAL; 11703 goto out; 11704 } 11705 11706 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 11707 sizeof(func->service_id)); 11708 11709 func->close_range = 11710 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 11711 11712 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 11713 func->serv_spec_info_len = 11714 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 11715 func->serv_spec_info = 11716 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 11717 func->serv_spec_info_len, 11718 GFP_KERNEL); 11719 if (!func->serv_spec_info) { 11720 err = -ENOMEM; 11721 goto out; 11722 } 11723 } 11724 11725 if (tb[NL80211_NAN_FUNC_TTL]) 11726 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 11727 11728 switch (func->type) { 11729 case NL80211_NAN_FUNC_PUBLISH: 11730 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 11731 err = -EINVAL; 11732 goto out; 11733 } 11734 11735 func->publish_type = 11736 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 11737 func->publish_bcast = 11738 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 11739 11740 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 11741 func->publish_bcast) { 11742 err = -EINVAL; 11743 goto out; 11744 } 11745 break; 11746 case NL80211_NAN_FUNC_SUBSCRIBE: 11747 func->subscribe_active = 11748 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 11749 break; 11750 case NL80211_NAN_FUNC_FOLLOW_UP: 11751 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 11752 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] || 11753 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) { 11754 err = -EINVAL; 11755 goto out; 11756 } 11757 11758 func->followup_id = 11759 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 11760 func->followup_reqid = 11761 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 11762 memcpy(func->followup_dest.addr, 11763 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 11764 sizeof(func->followup_dest.addr)); 11765 if (func->ttl) { 11766 err = -EINVAL; 11767 goto out; 11768 } 11769 break; 11770 default: 11771 err = -EINVAL; 11772 goto out; 11773 } 11774 11775 if (tb[NL80211_NAN_FUNC_SRF]) { 11776 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 11777 11778 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX, 11779 tb[NL80211_NAN_FUNC_SRF], 11780 nl80211_nan_srf_policy, info->extack); 11781 if (err) 11782 goto out; 11783 11784 func->srf_include = 11785 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 11786 11787 if (srf_tb[NL80211_NAN_SRF_BF]) { 11788 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 11789 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 11790 err = -EINVAL; 11791 goto out; 11792 } 11793 11794 func->srf_bf_len = 11795 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 11796 func->srf_bf = 11797 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 11798 func->srf_bf_len, GFP_KERNEL); 11799 if (!func->srf_bf) { 11800 err = -ENOMEM; 11801 goto out; 11802 } 11803 11804 func->srf_bf_idx = 11805 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 11806 } else { 11807 struct nlattr *attr, *mac_attr = 11808 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 11809 int n_entries, rem, i = 0; 11810 11811 if (!mac_attr) { 11812 err = -EINVAL; 11813 goto out; 11814 } 11815 11816 n_entries = validate_acl_mac_addrs(mac_attr); 11817 if (n_entries <= 0) { 11818 err = -EINVAL; 11819 goto out; 11820 } 11821 11822 func->srf_num_macs = n_entries; 11823 func->srf_macs = 11824 kcalloc(n_entries, sizeof(*func->srf_macs), 11825 GFP_KERNEL); 11826 if (!func->srf_macs) { 11827 err = -ENOMEM; 11828 goto out; 11829 } 11830 11831 nla_for_each_nested(attr, mac_attr, rem) 11832 memcpy(func->srf_macs[i++].addr, nla_data(attr), 11833 sizeof(*func->srf_macs)); 11834 } 11835 } 11836 11837 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 11838 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 11839 func, true); 11840 if (err) 11841 goto out; 11842 } 11843 11844 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 11845 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 11846 func, false); 11847 if (err) 11848 goto out; 11849 } 11850 11851 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11852 if (!msg) { 11853 err = -ENOMEM; 11854 goto out; 11855 } 11856 11857 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11858 NL80211_CMD_ADD_NAN_FUNCTION); 11859 /* This can't really happen - we just allocated 4KB */ 11860 if (WARN_ON(!hdr)) { 11861 err = -ENOMEM; 11862 goto out; 11863 } 11864 11865 err = rdev_add_nan_func(rdev, wdev, func); 11866 out: 11867 if (err < 0) { 11868 cfg80211_free_nan_func(func); 11869 nlmsg_free(msg); 11870 return err; 11871 } 11872 11873 /* propagate the instance id and cookie to userspace */ 11874 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 11875 NL80211_ATTR_PAD)) 11876 goto nla_put_failure; 11877 11878 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11879 if (!func_attr) 11880 goto nla_put_failure; 11881 11882 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 11883 func->instance_id)) 11884 goto nla_put_failure; 11885 11886 nla_nest_end(msg, func_attr); 11887 11888 genlmsg_end(msg, hdr); 11889 return genlmsg_reply(msg, info); 11890 11891 nla_put_failure: 11892 nlmsg_free(msg); 11893 return -ENOBUFS; 11894 } 11895 11896 static int nl80211_nan_del_func(struct sk_buff *skb, 11897 struct genl_info *info) 11898 { 11899 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11900 struct wireless_dev *wdev = info->user_ptr[1]; 11901 u64 cookie; 11902 11903 if (wdev->iftype != NL80211_IFTYPE_NAN) 11904 return -EOPNOTSUPP; 11905 11906 if (!wdev_running(wdev)) 11907 return -ENOTCONN; 11908 11909 if (!info->attrs[NL80211_ATTR_COOKIE]) 11910 return -EINVAL; 11911 11912 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11913 11914 rdev_del_nan_func(rdev, wdev, cookie); 11915 11916 return 0; 11917 } 11918 11919 static int nl80211_nan_change_config(struct sk_buff *skb, 11920 struct genl_info *info) 11921 { 11922 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11923 struct wireless_dev *wdev = info->user_ptr[1]; 11924 struct cfg80211_nan_conf conf = {}; 11925 u32 changed = 0; 11926 11927 if (wdev->iftype != NL80211_IFTYPE_NAN) 11928 return -EOPNOTSUPP; 11929 11930 if (!wdev_running(wdev)) 11931 return -ENOTCONN; 11932 11933 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 11934 conf.master_pref = 11935 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11936 if (conf.master_pref <= 1 || conf.master_pref == 255) 11937 return -EINVAL; 11938 11939 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 11940 } 11941 11942 if (info->attrs[NL80211_ATTR_BANDS]) { 11943 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11944 11945 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11946 return -EOPNOTSUPP; 11947 11948 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11949 return -EINVAL; 11950 11951 conf.bands = bands; 11952 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 11953 } 11954 11955 if (!changed) 11956 return -EINVAL; 11957 11958 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 11959 } 11960 11961 void cfg80211_nan_match(struct wireless_dev *wdev, 11962 struct cfg80211_nan_match_params *match, gfp_t gfp) 11963 { 11964 struct wiphy *wiphy = wdev->wiphy; 11965 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11966 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 11967 struct sk_buff *msg; 11968 void *hdr; 11969 11970 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 11971 return; 11972 11973 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11974 if (!msg) 11975 return; 11976 11977 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 11978 if (!hdr) { 11979 nlmsg_free(msg); 11980 return; 11981 } 11982 11983 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11984 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11985 wdev->netdev->ifindex)) || 11986 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11987 NL80211_ATTR_PAD)) 11988 goto nla_put_failure; 11989 11990 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 11991 NL80211_ATTR_PAD) || 11992 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 11993 goto nla_put_failure; 11994 11995 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH); 11996 if (!match_attr) 11997 goto nla_put_failure; 11998 11999 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL); 12000 if (!local_func_attr) 12001 goto nla_put_failure; 12002 12003 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 12004 goto nla_put_failure; 12005 12006 nla_nest_end(msg, local_func_attr); 12007 12008 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER); 12009 if (!peer_func_attr) 12010 goto nla_put_failure; 12011 12012 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 12013 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 12014 goto nla_put_failure; 12015 12016 if (match->info && match->info_len && 12017 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 12018 match->info)) 12019 goto nla_put_failure; 12020 12021 nla_nest_end(msg, peer_func_attr); 12022 nla_nest_end(msg, match_attr); 12023 genlmsg_end(msg, hdr); 12024 12025 if (!wdev->owner_nlportid) 12026 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 12027 msg, 0, NL80211_MCGRP_NAN, gfp); 12028 else 12029 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 12030 wdev->owner_nlportid); 12031 12032 return; 12033 12034 nla_put_failure: 12035 nlmsg_free(msg); 12036 } 12037 EXPORT_SYMBOL(cfg80211_nan_match); 12038 12039 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 12040 u8 inst_id, 12041 enum nl80211_nan_func_term_reason reason, 12042 u64 cookie, gfp_t gfp) 12043 { 12044 struct wiphy *wiphy = wdev->wiphy; 12045 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12046 struct sk_buff *msg; 12047 struct nlattr *func_attr; 12048 void *hdr; 12049 12050 if (WARN_ON(!inst_id)) 12051 return; 12052 12053 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12054 if (!msg) 12055 return; 12056 12057 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 12058 if (!hdr) { 12059 nlmsg_free(msg); 12060 return; 12061 } 12062 12063 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12064 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12065 wdev->netdev->ifindex)) || 12066 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12067 NL80211_ATTR_PAD)) 12068 goto nla_put_failure; 12069 12070 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12071 NL80211_ATTR_PAD)) 12072 goto nla_put_failure; 12073 12074 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 12075 if (!func_attr) 12076 goto nla_put_failure; 12077 12078 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 12079 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 12080 goto nla_put_failure; 12081 12082 nla_nest_end(msg, func_attr); 12083 genlmsg_end(msg, hdr); 12084 12085 if (!wdev->owner_nlportid) 12086 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 12087 msg, 0, NL80211_MCGRP_NAN, gfp); 12088 else 12089 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 12090 wdev->owner_nlportid); 12091 12092 return; 12093 12094 nla_put_failure: 12095 nlmsg_free(msg); 12096 } 12097 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 12098 12099 static int nl80211_get_protocol_features(struct sk_buff *skb, 12100 struct genl_info *info) 12101 { 12102 void *hdr; 12103 struct sk_buff *msg; 12104 12105 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12106 if (!msg) 12107 return -ENOMEM; 12108 12109 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 12110 NL80211_CMD_GET_PROTOCOL_FEATURES); 12111 if (!hdr) 12112 goto nla_put_failure; 12113 12114 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 12115 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 12116 goto nla_put_failure; 12117 12118 genlmsg_end(msg, hdr); 12119 return genlmsg_reply(msg, info); 12120 12121 nla_put_failure: 12122 kfree_skb(msg); 12123 return -ENOBUFS; 12124 } 12125 12126 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 12127 { 12128 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12129 struct cfg80211_update_ft_ies_params ft_params; 12130 struct net_device *dev = info->user_ptr[1]; 12131 12132 if (!rdev->ops->update_ft_ies) 12133 return -EOPNOTSUPP; 12134 12135 if (!info->attrs[NL80211_ATTR_MDID] || 12136 !info->attrs[NL80211_ATTR_IE]) 12137 return -EINVAL; 12138 12139 memset(&ft_params, 0, sizeof(ft_params)); 12140 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 12141 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12142 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12143 12144 return rdev_update_ft_ies(rdev, dev, &ft_params); 12145 } 12146 12147 static int nl80211_crit_protocol_start(struct sk_buff *skb, 12148 struct genl_info *info) 12149 { 12150 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12151 struct wireless_dev *wdev = info->user_ptr[1]; 12152 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 12153 u16 duration; 12154 int ret; 12155 12156 if (!rdev->ops->crit_proto_start) 12157 return -EOPNOTSUPP; 12158 12159 if (WARN_ON(!rdev->ops->crit_proto_stop)) 12160 return -EINVAL; 12161 12162 if (rdev->crit_proto_nlportid) 12163 return -EBUSY; 12164 12165 /* determine protocol if provided */ 12166 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 12167 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 12168 12169 if (proto >= NUM_NL80211_CRIT_PROTO) 12170 return -EINVAL; 12171 12172 /* timeout must be provided */ 12173 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 12174 return -EINVAL; 12175 12176 duration = 12177 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 12178 12179 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 12180 return -ERANGE; 12181 12182 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 12183 if (!ret) 12184 rdev->crit_proto_nlportid = info->snd_portid; 12185 12186 return ret; 12187 } 12188 12189 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 12190 struct genl_info *info) 12191 { 12192 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12193 struct wireless_dev *wdev = info->user_ptr[1]; 12194 12195 if (!rdev->ops->crit_proto_stop) 12196 return -EOPNOTSUPP; 12197 12198 if (rdev->crit_proto_nlportid) { 12199 rdev->crit_proto_nlportid = 0; 12200 rdev_crit_proto_stop(rdev, wdev); 12201 } 12202 return 0; 12203 } 12204 12205 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 12206 { 12207 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12208 struct wireless_dev *wdev = 12209 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 12210 int i, err; 12211 u32 vid, subcmd; 12212 12213 if (!rdev->wiphy.vendor_commands) 12214 return -EOPNOTSUPP; 12215 12216 if (IS_ERR(wdev)) { 12217 err = PTR_ERR(wdev); 12218 if (err != -EINVAL) 12219 return err; 12220 wdev = NULL; 12221 } else if (wdev->wiphy != &rdev->wiphy) { 12222 return -EINVAL; 12223 } 12224 12225 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 12226 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 12227 return -EINVAL; 12228 12229 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 12230 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 12231 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 12232 const struct wiphy_vendor_command *vcmd; 12233 void *data = NULL; 12234 int len = 0; 12235 12236 vcmd = &rdev->wiphy.vendor_commands[i]; 12237 12238 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 12239 continue; 12240 12241 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 12242 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 12243 if (!wdev) 12244 return -EINVAL; 12245 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 12246 !wdev->netdev) 12247 return -EINVAL; 12248 12249 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 12250 if (!wdev_running(wdev)) 12251 return -ENETDOWN; 12252 } 12253 12254 if (!vcmd->doit) 12255 return -EOPNOTSUPP; 12256 } else { 12257 wdev = NULL; 12258 } 12259 12260 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 12261 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 12262 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 12263 } 12264 12265 rdev->cur_cmd_info = info; 12266 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 12267 data, len); 12268 rdev->cur_cmd_info = NULL; 12269 return err; 12270 } 12271 12272 return -EOPNOTSUPP; 12273 } 12274 12275 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 12276 struct netlink_callback *cb, 12277 struct cfg80211_registered_device **rdev, 12278 struct wireless_dev **wdev) 12279 { 12280 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 12281 u32 vid, subcmd; 12282 unsigned int i; 12283 int vcmd_idx = -1; 12284 int err; 12285 void *data = NULL; 12286 unsigned int data_len = 0; 12287 12288 if (cb->args[0]) { 12289 /* subtract the 1 again here */ 12290 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 12291 struct wireless_dev *tmp; 12292 12293 if (!wiphy) 12294 return -ENODEV; 12295 *rdev = wiphy_to_rdev(wiphy); 12296 *wdev = NULL; 12297 12298 if (cb->args[1]) { 12299 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 12300 if (tmp->identifier == cb->args[1] - 1) { 12301 *wdev = tmp; 12302 break; 12303 } 12304 } 12305 } 12306 12307 /* keep rtnl locked in successful case */ 12308 return 0; 12309 } 12310 12311 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf, 12312 nl80211_fam.maxattr, nl80211_policy, NULL); 12313 if (err) 12314 return err; 12315 12316 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 12317 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) 12318 return -EINVAL; 12319 12320 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf); 12321 if (IS_ERR(*wdev)) 12322 *wdev = NULL; 12323 12324 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 12325 if (IS_ERR(*rdev)) 12326 return PTR_ERR(*rdev); 12327 12328 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 12329 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 12330 12331 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 12332 const struct wiphy_vendor_command *vcmd; 12333 12334 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 12335 12336 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 12337 continue; 12338 12339 if (!vcmd->dumpit) 12340 return -EOPNOTSUPP; 12341 12342 vcmd_idx = i; 12343 break; 12344 } 12345 12346 if (vcmd_idx < 0) 12347 return -EOPNOTSUPP; 12348 12349 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 12350 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 12351 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 12352 } 12353 12354 /* 0 is the first index - add 1 to parse only once */ 12355 cb->args[0] = (*rdev)->wiphy_idx + 1; 12356 /* add 1 to know if it was NULL */ 12357 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 12358 cb->args[2] = vcmd_idx; 12359 cb->args[3] = (unsigned long)data; 12360 cb->args[4] = data_len; 12361 12362 /* keep rtnl locked in successful case */ 12363 return 0; 12364 } 12365 12366 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 12367 struct netlink_callback *cb) 12368 { 12369 struct cfg80211_registered_device *rdev; 12370 struct wireless_dev *wdev; 12371 unsigned int vcmd_idx; 12372 const struct wiphy_vendor_command *vcmd; 12373 void *data; 12374 int data_len; 12375 int err; 12376 struct nlattr *vendor_data; 12377 12378 rtnl_lock(); 12379 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 12380 if (err) 12381 goto out; 12382 12383 vcmd_idx = cb->args[2]; 12384 data = (void *)cb->args[3]; 12385 data_len = cb->args[4]; 12386 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 12387 12388 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 12389 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 12390 if (!wdev) { 12391 err = -EINVAL; 12392 goto out; 12393 } 12394 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 12395 !wdev->netdev) { 12396 err = -EINVAL; 12397 goto out; 12398 } 12399 12400 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 12401 if (!wdev_running(wdev)) { 12402 err = -ENETDOWN; 12403 goto out; 12404 } 12405 } 12406 } 12407 12408 while (1) { 12409 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 12410 cb->nlh->nlmsg_seq, NLM_F_MULTI, 12411 NL80211_CMD_VENDOR); 12412 if (!hdr) 12413 break; 12414 12415 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12416 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 12417 wdev_id(wdev), 12418 NL80211_ATTR_PAD))) { 12419 genlmsg_cancel(skb, hdr); 12420 break; 12421 } 12422 12423 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 12424 if (!vendor_data) { 12425 genlmsg_cancel(skb, hdr); 12426 break; 12427 } 12428 12429 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 12430 (unsigned long *)&cb->args[5]); 12431 nla_nest_end(skb, vendor_data); 12432 12433 if (err == -ENOBUFS || err == -ENOENT) { 12434 genlmsg_cancel(skb, hdr); 12435 break; 12436 } else if (err) { 12437 genlmsg_cancel(skb, hdr); 12438 goto out; 12439 } 12440 12441 genlmsg_end(skb, hdr); 12442 } 12443 12444 err = skb->len; 12445 out: 12446 rtnl_unlock(); 12447 return err; 12448 } 12449 12450 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 12451 enum nl80211_commands cmd, 12452 enum nl80211_attrs attr, 12453 int approxlen) 12454 { 12455 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12456 12457 if (WARN_ON(!rdev->cur_cmd_info)) 12458 return NULL; 12459 12460 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 12461 rdev->cur_cmd_info->snd_portid, 12462 rdev->cur_cmd_info->snd_seq, 12463 cmd, attr, NULL, GFP_KERNEL); 12464 } 12465 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 12466 12467 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 12468 { 12469 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 12470 void *hdr = ((void **)skb->cb)[1]; 12471 struct nlattr *data = ((void **)skb->cb)[2]; 12472 12473 /* clear CB data for netlink core to own from now on */ 12474 memset(skb->cb, 0, sizeof(skb->cb)); 12475 12476 if (WARN_ON(!rdev->cur_cmd_info)) { 12477 kfree_skb(skb); 12478 return -EINVAL; 12479 } 12480 12481 nla_nest_end(skb, data); 12482 genlmsg_end(skb, hdr); 12483 return genlmsg_reply(skb, rdev->cur_cmd_info); 12484 } 12485 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 12486 12487 static int nl80211_set_qos_map(struct sk_buff *skb, 12488 struct genl_info *info) 12489 { 12490 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12491 struct cfg80211_qos_map *qos_map = NULL; 12492 struct net_device *dev = info->user_ptr[1]; 12493 u8 *pos, len, num_des, des_len, des; 12494 int ret; 12495 12496 if (!rdev->ops->set_qos_map) 12497 return -EOPNOTSUPP; 12498 12499 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 12500 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 12501 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 12502 12503 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 12504 len > IEEE80211_QOS_MAP_LEN_MAX) 12505 return -EINVAL; 12506 12507 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 12508 if (!qos_map) 12509 return -ENOMEM; 12510 12511 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 12512 if (num_des) { 12513 des_len = num_des * 12514 sizeof(struct cfg80211_dscp_exception); 12515 memcpy(qos_map->dscp_exception, pos, des_len); 12516 qos_map->num_des = num_des; 12517 for (des = 0; des < num_des; des++) { 12518 if (qos_map->dscp_exception[des].up > 7) { 12519 kfree(qos_map); 12520 return -EINVAL; 12521 } 12522 } 12523 pos += des_len; 12524 } 12525 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 12526 } 12527 12528 wdev_lock(dev->ieee80211_ptr); 12529 ret = nl80211_key_allowed(dev->ieee80211_ptr); 12530 if (!ret) 12531 ret = rdev_set_qos_map(rdev, dev, qos_map); 12532 wdev_unlock(dev->ieee80211_ptr); 12533 12534 kfree(qos_map); 12535 return ret; 12536 } 12537 12538 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 12539 { 12540 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12541 struct net_device *dev = info->user_ptr[1]; 12542 struct wireless_dev *wdev = dev->ieee80211_ptr; 12543 const u8 *peer; 12544 u8 tsid, up; 12545 u16 admitted_time = 0; 12546 int err; 12547 12548 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 12549 return -EOPNOTSUPP; 12550 12551 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 12552 !info->attrs[NL80211_ATTR_USER_PRIO]) 12553 return -EINVAL; 12554 12555 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12556 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 12557 12558 /* WMM uses TIDs 0-7 even for TSPEC */ 12559 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 12560 /* TODO: handle 802.11 TSPEC/admission control 12561 * need more attributes for that (e.g. BA session requirement); 12562 * change the WMM adminssion test above to allow both then 12563 */ 12564 return -EINVAL; 12565 } 12566 12567 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12568 12569 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 12570 admitted_time = 12571 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 12572 if (!admitted_time) 12573 return -EINVAL; 12574 } 12575 12576 wdev_lock(wdev); 12577 switch (wdev->iftype) { 12578 case NL80211_IFTYPE_STATION: 12579 case NL80211_IFTYPE_P2P_CLIENT: 12580 if (wdev->current_bss) 12581 break; 12582 err = -ENOTCONN; 12583 goto out; 12584 default: 12585 err = -EOPNOTSUPP; 12586 goto out; 12587 } 12588 12589 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 12590 12591 out: 12592 wdev_unlock(wdev); 12593 return err; 12594 } 12595 12596 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 12597 { 12598 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12599 struct net_device *dev = info->user_ptr[1]; 12600 struct wireless_dev *wdev = dev->ieee80211_ptr; 12601 const u8 *peer; 12602 u8 tsid; 12603 int err; 12604 12605 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 12606 return -EINVAL; 12607 12608 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12609 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12610 12611 wdev_lock(wdev); 12612 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 12613 wdev_unlock(wdev); 12614 12615 return err; 12616 } 12617 12618 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 12619 struct genl_info *info) 12620 { 12621 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12622 struct net_device *dev = info->user_ptr[1]; 12623 struct wireless_dev *wdev = dev->ieee80211_ptr; 12624 struct cfg80211_chan_def chandef = {}; 12625 const u8 *addr; 12626 u8 oper_class; 12627 int err; 12628 12629 if (!rdev->ops->tdls_channel_switch || 12630 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12631 return -EOPNOTSUPP; 12632 12633 switch (dev->ieee80211_ptr->iftype) { 12634 case NL80211_IFTYPE_STATION: 12635 case NL80211_IFTYPE_P2P_CLIENT: 12636 break; 12637 default: 12638 return -EOPNOTSUPP; 12639 } 12640 12641 if (!info->attrs[NL80211_ATTR_MAC] || 12642 !info->attrs[NL80211_ATTR_OPER_CLASS]) 12643 return -EINVAL; 12644 12645 err = nl80211_parse_chandef(rdev, info, &chandef); 12646 if (err) 12647 return err; 12648 12649 /* 12650 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 12651 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 12652 * specification is not defined for them. 12653 */ 12654 if (chandef.chan->band == NL80211_BAND_2GHZ && 12655 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 12656 chandef.width != NL80211_CHAN_WIDTH_20) 12657 return -EINVAL; 12658 12659 /* we will be active on the TDLS link */ 12660 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 12661 wdev->iftype)) 12662 return -EINVAL; 12663 12664 /* don't allow switching to DFS channels */ 12665 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 12666 return -EINVAL; 12667 12668 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12669 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 12670 12671 wdev_lock(wdev); 12672 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 12673 wdev_unlock(wdev); 12674 12675 return err; 12676 } 12677 12678 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 12679 struct genl_info *info) 12680 { 12681 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12682 struct net_device *dev = info->user_ptr[1]; 12683 struct wireless_dev *wdev = dev->ieee80211_ptr; 12684 const u8 *addr; 12685 12686 if (!rdev->ops->tdls_channel_switch || 12687 !rdev->ops->tdls_cancel_channel_switch || 12688 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12689 return -EOPNOTSUPP; 12690 12691 switch (dev->ieee80211_ptr->iftype) { 12692 case NL80211_IFTYPE_STATION: 12693 case NL80211_IFTYPE_P2P_CLIENT: 12694 break; 12695 default: 12696 return -EOPNOTSUPP; 12697 } 12698 12699 if (!info->attrs[NL80211_ATTR_MAC]) 12700 return -EINVAL; 12701 12702 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12703 12704 wdev_lock(wdev); 12705 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 12706 wdev_unlock(wdev); 12707 12708 return 0; 12709 } 12710 12711 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 12712 struct genl_info *info) 12713 { 12714 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12715 struct net_device *dev = info->user_ptr[1]; 12716 struct wireless_dev *wdev = dev->ieee80211_ptr; 12717 const struct nlattr *nla; 12718 bool enabled; 12719 12720 if (!rdev->ops->set_multicast_to_unicast) 12721 return -EOPNOTSUPP; 12722 12723 if (wdev->iftype != NL80211_IFTYPE_AP && 12724 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12725 return -EOPNOTSUPP; 12726 12727 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 12728 enabled = nla_get_flag(nla); 12729 12730 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 12731 } 12732 12733 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 12734 { 12735 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12736 struct net_device *dev = info->user_ptr[1]; 12737 struct wireless_dev *wdev = dev->ieee80211_ptr; 12738 struct cfg80211_pmk_conf pmk_conf = {}; 12739 int ret; 12740 12741 if (wdev->iftype != NL80211_IFTYPE_STATION && 12742 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12743 return -EOPNOTSUPP; 12744 12745 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12746 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12747 return -EOPNOTSUPP; 12748 12749 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 12750 return -EINVAL; 12751 12752 wdev_lock(wdev); 12753 if (!wdev->current_bss) { 12754 ret = -ENOTCONN; 12755 goto out; 12756 } 12757 12758 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12759 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) { 12760 ret = -EINVAL; 12761 goto out; 12762 } 12763 12764 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 12765 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 12766 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 12767 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) { 12768 ret = -EINVAL; 12769 goto out; 12770 } 12771 12772 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) { 12773 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12774 12775 if (r0_name_len != WLAN_PMK_NAME_LEN) { 12776 ret = -EINVAL; 12777 goto out; 12778 } 12779 12780 pmk_conf.pmk_r0_name = 12781 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12782 } 12783 12784 ret = rdev_set_pmk(rdev, dev, &pmk_conf); 12785 out: 12786 wdev_unlock(wdev); 12787 return ret; 12788 } 12789 12790 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 12791 { 12792 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12793 struct net_device *dev = info->user_ptr[1]; 12794 struct wireless_dev *wdev = dev->ieee80211_ptr; 12795 const u8 *aa; 12796 int ret; 12797 12798 if (wdev->iftype != NL80211_IFTYPE_STATION && 12799 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12800 return -EOPNOTSUPP; 12801 12802 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12803 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12804 return -EOPNOTSUPP; 12805 12806 if (!info->attrs[NL80211_ATTR_MAC]) 12807 return -EINVAL; 12808 12809 wdev_lock(wdev); 12810 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12811 ret = rdev_del_pmk(rdev, dev, aa); 12812 wdev_unlock(wdev); 12813 12814 return ret; 12815 } 12816 12817 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info) 12818 { 12819 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12820 struct net_device *dev = info->user_ptr[1]; 12821 struct cfg80211_external_auth_params params; 12822 12823 if (!rdev->ops->external_auth) 12824 return -EOPNOTSUPP; 12825 12826 if (!info->attrs[NL80211_ATTR_SSID]) 12827 return -EINVAL; 12828 12829 if (!info->attrs[NL80211_ATTR_BSSID]) 12830 return -EINVAL; 12831 12832 if (!info->attrs[NL80211_ATTR_STATUS_CODE]) 12833 return -EINVAL; 12834 12835 memset(¶ms, 0, sizeof(params)); 12836 12837 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 12838 if (params.ssid.ssid_len == 0 || 12839 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN) 12840 return -EINVAL; 12841 memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]), 12842 params.ssid.ssid_len); 12843 12844 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]), 12845 ETH_ALEN); 12846 12847 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 12848 12849 return rdev_external_auth(rdev, dev, ¶ms); 12850 } 12851 12852 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info) 12853 { 12854 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12855 struct net_device *dev = info->user_ptr[1]; 12856 struct wireless_dev *wdev = dev->ieee80211_ptr; 12857 const u8 *buf; 12858 size_t len; 12859 u8 *dest; 12860 u16 proto; 12861 bool noencrypt; 12862 int err; 12863 12864 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12865 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 12866 return -EOPNOTSUPP; 12867 12868 if (!rdev->ops->tx_control_port) 12869 return -EOPNOTSUPP; 12870 12871 if (!info->attrs[NL80211_ATTR_FRAME] || 12872 !info->attrs[NL80211_ATTR_MAC] || 12873 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 12874 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing"); 12875 return -EINVAL; 12876 } 12877 12878 wdev_lock(wdev); 12879 12880 switch (wdev->iftype) { 12881 case NL80211_IFTYPE_AP: 12882 case NL80211_IFTYPE_P2P_GO: 12883 case NL80211_IFTYPE_MESH_POINT: 12884 break; 12885 case NL80211_IFTYPE_ADHOC: 12886 case NL80211_IFTYPE_STATION: 12887 case NL80211_IFTYPE_P2P_CLIENT: 12888 if (wdev->current_bss) 12889 break; 12890 err = -ENOTCONN; 12891 goto out; 12892 default: 12893 err = -EOPNOTSUPP; 12894 goto out; 12895 } 12896 12897 wdev_unlock(wdev); 12898 12899 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 12900 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 12901 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 12902 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 12903 noencrypt = 12904 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]); 12905 12906 return rdev_tx_control_port(rdev, dev, buf, len, 12907 dest, cpu_to_be16(proto), noencrypt); 12908 12909 out: 12910 wdev_unlock(wdev); 12911 return err; 12912 } 12913 12914 static int nl80211_get_ftm_responder_stats(struct sk_buff *skb, 12915 struct genl_info *info) 12916 { 12917 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12918 struct net_device *dev = info->user_ptr[1]; 12919 struct wireless_dev *wdev = dev->ieee80211_ptr; 12920 struct cfg80211_ftm_responder_stats ftm_stats = {}; 12921 struct sk_buff *msg; 12922 void *hdr; 12923 struct nlattr *ftm_stats_attr; 12924 int err; 12925 12926 if (wdev->iftype != NL80211_IFTYPE_AP || !wdev->beacon_interval) 12927 return -EOPNOTSUPP; 12928 12929 err = rdev_get_ftm_responder_stats(rdev, dev, &ftm_stats); 12930 if (err) 12931 return err; 12932 12933 if (!ftm_stats.filled) 12934 return -ENODATA; 12935 12936 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12937 if (!msg) 12938 return -ENOMEM; 12939 12940 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 12941 NL80211_CMD_GET_FTM_RESPONDER_STATS); 12942 if (!hdr) 12943 return -ENOBUFS; 12944 12945 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12946 goto nla_put_failure; 12947 12948 ftm_stats_attr = nla_nest_start(msg, NL80211_ATTR_FTM_RESPONDER_STATS); 12949 if (!ftm_stats_attr) 12950 goto nla_put_failure; 12951 12952 #define SET_FTM(field, name, type) \ 12953 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 12954 nla_put_ ## type(msg, NL80211_FTM_STATS_ ## name, \ 12955 ftm_stats.field)) \ 12956 goto nla_put_failure; } while (0) 12957 #define SET_FTM_U64(field, name) \ 12958 do { if ((ftm_stats.filled & BIT(NL80211_FTM_STATS_ ## name)) && \ 12959 nla_put_u64_64bit(msg, NL80211_FTM_STATS_ ## name, \ 12960 ftm_stats.field, NL80211_FTM_STATS_PAD)) \ 12961 goto nla_put_failure; } while (0) 12962 12963 SET_FTM(success_num, SUCCESS_NUM, u32); 12964 SET_FTM(partial_num, PARTIAL_NUM, u32); 12965 SET_FTM(failed_num, FAILED_NUM, u32); 12966 SET_FTM(asap_num, ASAP_NUM, u32); 12967 SET_FTM(non_asap_num, NON_ASAP_NUM, u32); 12968 SET_FTM_U64(total_duration_ms, TOTAL_DURATION_MSEC); 12969 SET_FTM(unknown_triggers_num, UNKNOWN_TRIGGERS_NUM, u32); 12970 SET_FTM(reschedule_requests_num, RESCHEDULE_REQUESTS_NUM, u32); 12971 SET_FTM(out_of_window_triggers_num, OUT_OF_WINDOW_TRIGGERS_NUM, u32); 12972 #undef SET_FTM 12973 12974 nla_nest_end(msg, ftm_stats_attr); 12975 12976 genlmsg_end(msg, hdr); 12977 return genlmsg_reply(msg, info); 12978 12979 nla_put_failure: 12980 nlmsg_free(msg); 12981 return -ENOBUFS; 12982 } 12983 12984 #define NL80211_FLAG_NEED_WIPHY 0x01 12985 #define NL80211_FLAG_NEED_NETDEV 0x02 12986 #define NL80211_FLAG_NEED_RTNL 0x04 12987 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 12988 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 12989 NL80211_FLAG_CHECK_NETDEV_UP) 12990 #define NL80211_FLAG_NEED_WDEV 0x10 12991 /* If a netdev is associated, it must be UP, P2P must be started */ 12992 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 12993 NL80211_FLAG_CHECK_NETDEV_UP) 12994 #define NL80211_FLAG_CLEAR_SKB 0x20 12995 12996 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 12997 struct genl_info *info) 12998 { 12999 struct cfg80211_registered_device *rdev; 13000 struct wireless_dev *wdev; 13001 struct net_device *dev; 13002 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 13003 13004 if (rtnl) 13005 rtnl_lock(); 13006 13007 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 13008 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 13009 if (IS_ERR(rdev)) { 13010 if (rtnl) 13011 rtnl_unlock(); 13012 return PTR_ERR(rdev); 13013 } 13014 info->user_ptr[0] = rdev; 13015 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 13016 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 13017 ASSERT_RTNL(); 13018 13019 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 13020 info->attrs); 13021 if (IS_ERR(wdev)) { 13022 if (rtnl) 13023 rtnl_unlock(); 13024 return PTR_ERR(wdev); 13025 } 13026 13027 dev = wdev->netdev; 13028 rdev = wiphy_to_rdev(wdev->wiphy); 13029 13030 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 13031 if (!dev) { 13032 if (rtnl) 13033 rtnl_unlock(); 13034 return -EINVAL; 13035 } 13036 13037 info->user_ptr[1] = dev; 13038 } else { 13039 info->user_ptr[1] = wdev; 13040 } 13041 13042 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 13043 !wdev_running(wdev)) { 13044 if (rtnl) 13045 rtnl_unlock(); 13046 return -ENETDOWN; 13047 } 13048 13049 if (dev) 13050 dev_hold(dev); 13051 13052 info->user_ptr[0] = rdev; 13053 } 13054 13055 return 0; 13056 } 13057 13058 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 13059 struct genl_info *info) 13060 { 13061 if (info->user_ptr[1]) { 13062 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 13063 struct wireless_dev *wdev = info->user_ptr[1]; 13064 13065 if (wdev->netdev) 13066 dev_put(wdev->netdev); 13067 } else { 13068 dev_put(info->user_ptr[1]); 13069 } 13070 } 13071 13072 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 13073 rtnl_unlock(); 13074 13075 /* If needed, clear the netlink message payload from the SKB 13076 * as it might contain key data that shouldn't stick around on 13077 * the heap after the SKB is freed. The netlink message header 13078 * is still needed for further processing, so leave it intact. 13079 */ 13080 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 13081 struct nlmsghdr *nlh = nlmsg_hdr(skb); 13082 13083 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 13084 } 13085 } 13086 13087 static const struct genl_ops nl80211_ops[] = { 13088 { 13089 .cmd = NL80211_CMD_GET_WIPHY, 13090 .doit = nl80211_get_wiphy, 13091 .dumpit = nl80211_dump_wiphy, 13092 .done = nl80211_dump_wiphy_done, 13093 .policy = nl80211_policy, 13094 /* can be retrieved by unprivileged users */ 13095 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13096 NL80211_FLAG_NEED_RTNL, 13097 }, 13098 { 13099 .cmd = NL80211_CMD_SET_WIPHY, 13100 .doit = nl80211_set_wiphy, 13101 .policy = nl80211_policy, 13102 .flags = GENL_UNS_ADMIN_PERM, 13103 .internal_flags = NL80211_FLAG_NEED_RTNL, 13104 }, 13105 { 13106 .cmd = NL80211_CMD_GET_INTERFACE, 13107 .doit = nl80211_get_interface, 13108 .dumpit = nl80211_dump_interface, 13109 .policy = nl80211_policy, 13110 /* can be retrieved by unprivileged users */ 13111 .internal_flags = NL80211_FLAG_NEED_WDEV | 13112 NL80211_FLAG_NEED_RTNL, 13113 }, 13114 { 13115 .cmd = NL80211_CMD_SET_INTERFACE, 13116 .doit = nl80211_set_interface, 13117 .policy = nl80211_policy, 13118 .flags = GENL_UNS_ADMIN_PERM, 13119 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13120 NL80211_FLAG_NEED_RTNL, 13121 }, 13122 { 13123 .cmd = NL80211_CMD_NEW_INTERFACE, 13124 .doit = nl80211_new_interface, 13125 .policy = nl80211_policy, 13126 .flags = GENL_UNS_ADMIN_PERM, 13127 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13128 NL80211_FLAG_NEED_RTNL, 13129 }, 13130 { 13131 .cmd = NL80211_CMD_DEL_INTERFACE, 13132 .doit = nl80211_del_interface, 13133 .policy = nl80211_policy, 13134 .flags = GENL_UNS_ADMIN_PERM, 13135 .internal_flags = NL80211_FLAG_NEED_WDEV | 13136 NL80211_FLAG_NEED_RTNL, 13137 }, 13138 { 13139 .cmd = NL80211_CMD_GET_KEY, 13140 .doit = nl80211_get_key, 13141 .policy = nl80211_policy, 13142 .flags = GENL_UNS_ADMIN_PERM, 13143 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13144 NL80211_FLAG_NEED_RTNL, 13145 }, 13146 { 13147 .cmd = NL80211_CMD_SET_KEY, 13148 .doit = nl80211_set_key, 13149 .policy = nl80211_policy, 13150 .flags = GENL_UNS_ADMIN_PERM, 13151 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13152 NL80211_FLAG_NEED_RTNL | 13153 NL80211_FLAG_CLEAR_SKB, 13154 }, 13155 { 13156 .cmd = NL80211_CMD_NEW_KEY, 13157 .doit = nl80211_new_key, 13158 .policy = nl80211_policy, 13159 .flags = GENL_UNS_ADMIN_PERM, 13160 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13161 NL80211_FLAG_NEED_RTNL | 13162 NL80211_FLAG_CLEAR_SKB, 13163 }, 13164 { 13165 .cmd = NL80211_CMD_DEL_KEY, 13166 .doit = nl80211_del_key, 13167 .policy = nl80211_policy, 13168 .flags = GENL_UNS_ADMIN_PERM, 13169 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13170 NL80211_FLAG_NEED_RTNL, 13171 }, 13172 { 13173 .cmd = NL80211_CMD_SET_BEACON, 13174 .policy = nl80211_policy, 13175 .flags = GENL_UNS_ADMIN_PERM, 13176 .doit = nl80211_set_beacon, 13177 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13178 NL80211_FLAG_NEED_RTNL, 13179 }, 13180 { 13181 .cmd = NL80211_CMD_START_AP, 13182 .policy = nl80211_policy, 13183 .flags = GENL_UNS_ADMIN_PERM, 13184 .doit = nl80211_start_ap, 13185 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13186 NL80211_FLAG_NEED_RTNL, 13187 }, 13188 { 13189 .cmd = NL80211_CMD_STOP_AP, 13190 .policy = nl80211_policy, 13191 .flags = GENL_UNS_ADMIN_PERM, 13192 .doit = nl80211_stop_ap, 13193 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13194 NL80211_FLAG_NEED_RTNL, 13195 }, 13196 { 13197 .cmd = NL80211_CMD_GET_STATION, 13198 .doit = nl80211_get_station, 13199 .dumpit = nl80211_dump_station, 13200 .policy = nl80211_policy, 13201 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13202 NL80211_FLAG_NEED_RTNL, 13203 }, 13204 { 13205 .cmd = NL80211_CMD_SET_STATION, 13206 .doit = nl80211_set_station, 13207 .policy = nl80211_policy, 13208 .flags = GENL_UNS_ADMIN_PERM, 13209 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13210 NL80211_FLAG_NEED_RTNL, 13211 }, 13212 { 13213 .cmd = NL80211_CMD_NEW_STATION, 13214 .doit = nl80211_new_station, 13215 .policy = nl80211_policy, 13216 .flags = GENL_UNS_ADMIN_PERM, 13217 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13218 NL80211_FLAG_NEED_RTNL, 13219 }, 13220 { 13221 .cmd = NL80211_CMD_DEL_STATION, 13222 .doit = nl80211_del_station, 13223 .policy = nl80211_policy, 13224 .flags = GENL_UNS_ADMIN_PERM, 13225 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13226 NL80211_FLAG_NEED_RTNL, 13227 }, 13228 { 13229 .cmd = NL80211_CMD_GET_MPATH, 13230 .doit = nl80211_get_mpath, 13231 .dumpit = nl80211_dump_mpath, 13232 .policy = nl80211_policy, 13233 .flags = GENL_UNS_ADMIN_PERM, 13234 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13235 NL80211_FLAG_NEED_RTNL, 13236 }, 13237 { 13238 .cmd = NL80211_CMD_GET_MPP, 13239 .doit = nl80211_get_mpp, 13240 .dumpit = nl80211_dump_mpp, 13241 .policy = nl80211_policy, 13242 .flags = GENL_UNS_ADMIN_PERM, 13243 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13244 NL80211_FLAG_NEED_RTNL, 13245 }, 13246 { 13247 .cmd = NL80211_CMD_SET_MPATH, 13248 .doit = nl80211_set_mpath, 13249 .policy = nl80211_policy, 13250 .flags = GENL_UNS_ADMIN_PERM, 13251 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13252 NL80211_FLAG_NEED_RTNL, 13253 }, 13254 { 13255 .cmd = NL80211_CMD_NEW_MPATH, 13256 .doit = nl80211_new_mpath, 13257 .policy = nl80211_policy, 13258 .flags = GENL_UNS_ADMIN_PERM, 13259 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13260 NL80211_FLAG_NEED_RTNL, 13261 }, 13262 { 13263 .cmd = NL80211_CMD_DEL_MPATH, 13264 .doit = nl80211_del_mpath, 13265 .policy = nl80211_policy, 13266 .flags = GENL_UNS_ADMIN_PERM, 13267 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13268 NL80211_FLAG_NEED_RTNL, 13269 }, 13270 { 13271 .cmd = NL80211_CMD_SET_BSS, 13272 .doit = nl80211_set_bss, 13273 .policy = nl80211_policy, 13274 .flags = GENL_UNS_ADMIN_PERM, 13275 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13276 NL80211_FLAG_NEED_RTNL, 13277 }, 13278 { 13279 .cmd = NL80211_CMD_GET_REG, 13280 .doit = nl80211_get_reg_do, 13281 .dumpit = nl80211_get_reg_dump, 13282 .policy = nl80211_policy, 13283 .internal_flags = NL80211_FLAG_NEED_RTNL, 13284 /* can be retrieved by unprivileged users */ 13285 }, 13286 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 13287 { 13288 .cmd = NL80211_CMD_SET_REG, 13289 .doit = nl80211_set_reg, 13290 .policy = nl80211_policy, 13291 .flags = GENL_ADMIN_PERM, 13292 .internal_flags = NL80211_FLAG_NEED_RTNL, 13293 }, 13294 #endif 13295 { 13296 .cmd = NL80211_CMD_REQ_SET_REG, 13297 .doit = nl80211_req_set_reg, 13298 .policy = nl80211_policy, 13299 .flags = GENL_ADMIN_PERM, 13300 }, 13301 { 13302 .cmd = NL80211_CMD_RELOAD_REGDB, 13303 .doit = nl80211_reload_regdb, 13304 .policy = nl80211_policy, 13305 .flags = GENL_ADMIN_PERM, 13306 }, 13307 { 13308 .cmd = NL80211_CMD_GET_MESH_CONFIG, 13309 .doit = nl80211_get_mesh_config, 13310 .policy = nl80211_policy, 13311 /* can be retrieved by unprivileged users */ 13312 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13313 NL80211_FLAG_NEED_RTNL, 13314 }, 13315 { 13316 .cmd = NL80211_CMD_SET_MESH_CONFIG, 13317 .doit = nl80211_update_mesh_config, 13318 .policy = nl80211_policy, 13319 .flags = GENL_UNS_ADMIN_PERM, 13320 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13321 NL80211_FLAG_NEED_RTNL, 13322 }, 13323 { 13324 .cmd = NL80211_CMD_TRIGGER_SCAN, 13325 .doit = nl80211_trigger_scan, 13326 .policy = nl80211_policy, 13327 .flags = GENL_UNS_ADMIN_PERM, 13328 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13329 NL80211_FLAG_NEED_RTNL, 13330 }, 13331 { 13332 .cmd = NL80211_CMD_ABORT_SCAN, 13333 .doit = nl80211_abort_scan, 13334 .policy = nl80211_policy, 13335 .flags = GENL_UNS_ADMIN_PERM, 13336 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13337 NL80211_FLAG_NEED_RTNL, 13338 }, 13339 { 13340 .cmd = NL80211_CMD_GET_SCAN, 13341 .policy = nl80211_policy, 13342 .dumpit = nl80211_dump_scan, 13343 }, 13344 { 13345 .cmd = NL80211_CMD_START_SCHED_SCAN, 13346 .doit = nl80211_start_sched_scan, 13347 .policy = nl80211_policy, 13348 .flags = GENL_UNS_ADMIN_PERM, 13349 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13350 NL80211_FLAG_NEED_RTNL, 13351 }, 13352 { 13353 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 13354 .doit = nl80211_stop_sched_scan, 13355 .policy = nl80211_policy, 13356 .flags = GENL_UNS_ADMIN_PERM, 13357 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13358 NL80211_FLAG_NEED_RTNL, 13359 }, 13360 { 13361 .cmd = NL80211_CMD_AUTHENTICATE, 13362 .doit = nl80211_authenticate, 13363 .policy = nl80211_policy, 13364 .flags = GENL_UNS_ADMIN_PERM, 13365 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13366 NL80211_FLAG_NEED_RTNL | 13367 NL80211_FLAG_CLEAR_SKB, 13368 }, 13369 { 13370 .cmd = NL80211_CMD_ASSOCIATE, 13371 .doit = nl80211_associate, 13372 .policy = nl80211_policy, 13373 .flags = GENL_UNS_ADMIN_PERM, 13374 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13375 NL80211_FLAG_NEED_RTNL, 13376 }, 13377 { 13378 .cmd = NL80211_CMD_DEAUTHENTICATE, 13379 .doit = nl80211_deauthenticate, 13380 .policy = nl80211_policy, 13381 .flags = GENL_UNS_ADMIN_PERM, 13382 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13383 NL80211_FLAG_NEED_RTNL, 13384 }, 13385 { 13386 .cmd = NL80211_CMD_DISASSOCIATE, 13387 .doit = nl80211_disassociate, 13388 .policy = nl80211_policy, 13389 .flags = GENL_UNS_ADMIN_PERM, 13390 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13391 NL80211_FLAG_NEED_RTNL, 13392 }, 13393 { 13394 .cmd = NL80211_CMD_JOIN_IBSS, 13395 .doit = nl80211_join_ibss, 13396 .policy = nl80211_policy, 13397 .flags = GENL_UNS_ADMIN_PERM, 13398 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13399 NL80211_FLAG_NEED_RTNL, 13400 }, 13401 { 13402 .cmd = NL80211_CMD_LEAVE_IBSS, 13403 .doit = nl80211_leave_ibss, 13404 .policy = nl80211_policy, 13405 .flags = GENL_UNS_ADMIN_PERM, 13406 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13407 NL80211_FLAG_NEED_RTNL, 13408 }, 13409 #ifdef CONFIG_NL80211_TESTMODE 13410 { 13411 .cmd = NL80211_CMD_TESTMODE, 13412 .doit = nl80211_testmode_do, 13413 .dumpit = nl80211_testmode_dump, 13414 .policy = nl80211_policy, 13415 .flags = GENL_UNS_ADMIN_PERM, 13416 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13417 NL80211_FLAG_NEED_RTNL, 13418 }, 13419 #endif 13420 { 13421 .cmd = NL80211_CMD_CONNECT, 13422 .doit = nl80211_connect, 13423 .policy = nl80211_policy, 13424 .flags = GENL_UNS_ADMIN_PERM, 13425 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13426 NL80211_FLAG_NEED_RTNL, 13427 }, 13428 { 13429 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 13430 .doit = nl80211_update_connect_params, 13431 .policy = nl80211_policy, 13432 .flags = GENL_ADMIN_PERM, 13433 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13434 NL80211_FLAG_NEED_RTNL, 13435 }, 13436 { 13437 .cmd = NL80211_CMD_DISCONNECT, 13438 .doit = nl80211_disconnect, 13439 .policy = nl80211_policy, 13440 .flags = GENL_UNS_ADMIN_PERM, 13441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13442 NL80211_FLAG_NEED_RTNL, 13443 }, 13444 { 13445 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 13446 .doit = nl80211_wiphy_netns, 13447 .policy = nl80211_policy, 13448 .flags = GENL_UNS_ADMIN_PERM, 13449 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13450 NL80211_FLAG_NEED_RTNL, 13451 }, 13452 { 13453 .cmd = NL80211_CMD_GET_SURVEY, 13454 .policy = nl80211_policy, 13455 .dumpit = nl80211_dump_survey, 13456 }, 13457 { 13458 .cmd = NL80211_CMD_SET_PMKSA, 13459 .doit = nl80211_setdel_pmksa, 13460 .policy = nl80211_policy, 13461 .flags = GENL_UNS_ADMIN_PERM, 13462 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13463 NL80211_FLAG_NEED_RTNL, 13464 }, 13465 { 13466 .cmd = NL80211_CMD_DEL_PMKSA, 13467 .doit = nl80211_setdel_pmksa, 13468 .policy = nl80211_policy, 13469 .flags = GENL_UNS_ADMIN_PERM, 13470 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13471 NL80211_FLAG_NEED_RTNL, 13472 }, 13473 { 13474 .cmd = NL80211_CMD_FLUSH_PMKSA, 13475 .doit = nl80211_flush_pmksa, 13476 .policy = nl80211_policy, 13477 .flags = GENL_UNS_ADMIN_PERM, 13478 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13479 NL80211_FLAG_NEED_RTNL, 13480 }, 13481 { 13482 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 13483 .doit = nl80211_remain_on_channel, 13484 .policy = nl80211_policy, 13485 .flags = GENL_UNS_ADMIN_PERM, 13486 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13487 NL80211_FLAG_NEED_RTNL, 13488 }, 13489 { 13490 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 13491 .doit = nl80211_cancel_remain_on_channel, 13492 .policy = nl80211_policy, 13493 .flags = GENL_UNS_ADMIN_PERM, 13494 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13495 NL80211_FLAG_NEED_RTNL, 13496 }, 13497 { 13498 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 13499 .doit = nl80211_set_tx_bitrate_mask, 13500 .policy = nl80211_policy, 13501 .flags = GENL_UNS_ADMIN_PERM, 13502 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13503 NL80211_FLAG_NEED_RTNL, 13504 }, 13505 { 13506 .cmd = NL80211_CMD_REGISTER_FRAME, 13507 .doit = nl80211_register_mgmt, 13508 .policy = nl80211_policy, 13509 .flags = GENL_UNS_ADMIN_PERM, 13510 .internal_flags = NL80211_FLAG_NEED_WDEV | 13511 NL80211_FLAG_NEED_RTNL, 13512 }, 13513 { 13514 .cmd = NL80211_CMD_FRAME, 13515 .doit = nl80211_tx_mgmt, 13516 .policy = nl80211_policy, 13517 .flags = GENL_UNS_ADMIN_PERM, 13518 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13519 NL80211_FLAG_NEED_RTNL, 13520 }, 13521 { 13522 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 13523 .doit = nl80211_tx_mgmt_cancel_wait, 13524 .policy = nl80211_policy, 13525 .flags = GENL_UNS_ADMIN_PERM, 13526 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13527 NL80211_FLAG_NEED_RTNL, 13528 }, 13529 { 13530 .cmd = NL80211_CMD_SET_POWER_SAVE, 13531 .doit = nl80211_set_power_save, 13532 .policy = nl80211_policy, 13533 .flags = GENL_UNS_ADMIN_PERM, 13534 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13535 NL80211_FLAG_NEED_RTNL, 13536 }, 13537 { 13538 .cmd = NL80211_CMD_GET_POWER_SAVE, 13539 .doit = nl80211_get_power_save, 13540 .policy = nl80211_policy, 13541 /* can be retrieved by unprivileged users */ 13542 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13543 NL80211_FLAG_NEED_RTNL, 13544 }, 13545 { 13546 .cmd = NL80211_CMD_SET_CQM, 13547 .doit = nl80211_set_cqm, 13548 .policy = nl80211_policy, 13549 .flags = GENL_UNS_ADMIN_PERM, 13550 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13551 NL80211_FLAG_NEED_RTNL, 13552 }, 13553 { 13554 .cmd = NL80211_CMD_SET_CHANNEL, 13555 .doit = nl80211_set_channel, 13556 .policy = nl80211_policy, 13557 .flags = GENL_UNS_ADMIN_PERM, 13558 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13559 NL80211_FLAG_NEED_RTNL, 13560 }, 13561 { 13562 .cmd = NL80211_CMD_SET_WDS_PEER, 13563 .doit = nl80211_set_wds_peer, 13564 .policy = nl80211_policy, 13565 .flags = GENL_UNS_ADMIN_PERM, 13566 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13567 NL80211_FLAG_NEED_RTNL, 13568 }, 13569 { 13570 .cmd = NL80211_CMD_JOIN_MESH, 13571 .doit = nl80211_join_mesh, 13572 .policy = nl80211_policy, 13573 .flags = GENL_UNS_ADMIN_PERM, 13574 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13575 NL80211_FLAG_NEED_RTNL, 13576 }, 13577 { 13578 .cmd = NL80211_CMD_LEAVE_MESH, 13579 .doit = nl80211_leave_mesh, 13580 .policy = nl80211_policy, 13581 .flags = GENL_UNS_ADMIN_PERM, 13582 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13583 NL80211_FLAG_NEED_RTNL, 13584 }, 13585 { 13586 .cmd = NL80211_CMD_JOIN_OCB, 13587 .doit = nl80211_join_ocb, 13588 .policy = nl80211_policy, 13589 .flags = GENL_UNS_ADMIN_PERM, 13590 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13591 NL80211_FLAG_NEED_RTNL, 13592 }, 13593 { 13594 .cmd = NL80211_CMD_LEAVE_OCB, 13595 .doit = nl80211_leave_ocb, 13596 .policy = nl80211_policy, 13597 .flags = GENL_UNS_ADMIN_PERM, 13598 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13599 NL80211_FLAG_NEED_RTNL, 13600 }, 13601 #ifdef CONFIG_PM 13602 { 13603 .cmd = NL80211_CMD_GET_WOWLAN, 13604 .doit = nl80211_get_wowlan, 13605 .policy = nl80211_policy, 13606 /* can be retrieved by unprivileged users */ 13607 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13608 NL80211_FLAG_NEED_RTNL, 13609 }, 13610 { 13611 .cmd = NL80211_CMD_SET_WOWLAN, 13612 .doit = nl80211_set_wowlan, 13613 .policy = nl80211_policy, 13614 .flags = GENL_UNS_ADMIN_PERM, 13615 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13616 NL80211_FLAG_NEED_RTNL, 13617 }, 13618 #endif 13619 { 13620 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 13621 .doit = nl80211_set_rekey_data, 13622 .policy = nl80211_policy, 13623 .flags = GENL_UNS_ADMIN_PERM, 13624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13625 NL80211_FLAG_NEED_RTNL | 13626 NL80211_FLAG_CLEAR_SKB, 13627 }, 13628 { 13629 .cmd = NL80211_CMD_TDLS_MGMT, 13630 .doit = nl80211_tdls_mgmt, 13631 .policy = nl80211_policy, 13632 .flags = GENL_UNS_ADMIN_PERM, 13633 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13634 NL80211_FLAG_NEED_RTNL, 13635 }, 13636 { 13637 .cmd = NL80211_CMD_TDLS_OPER, 13638 .doit = nl80211_tdls_oper, 13639 .policy = nl80211_policy, 13640 .flags = GENL_UNS_ADMIN_PERM, 13641 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13642 NL80211_FLAG_NEED_RTNL, 13643 }, 13644 { 13645 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 13646 .doit = nl80211_register_unexpected_frame, 13647 .policy = nl80211_policy, 13648 .flags = GENL_UNS_ADMIN_PERM, 13649 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13650 NL80211_FLAG_NEED_RTNL, 13651 }, 13652 { 13653 .cmd = NL80211_CMD_PROBE_CLIENT, 13654 .doit = nl80211_probe_client, 13655 .policy = nl80211_policy, 13656 .flags = GENL_UNS_ADMIN_PERM, 13657 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13658 NL80211_FLAG_NEED_RTNL, 13659 }, 13660 { 13661 .cmd = NL80211_CMD_REGISTER_BEACONS, 13662 .doit = nl80211_register_beacons, 13663 .policy = nl80211_policy, 13664 .flags = GENL_UNS_ADMIN_PERM, 13665 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13666 NL80211_FLAG_NEED_RTNL, 13667 }, 13668 { 13669 .cmd = NL80211_CMD_SET_NOACK_MAP, 13670 .doit = nl80211_set_noack_map, 13671 .policy = nl80211_policy, 13672 .flags = GENL_UNS_ADMIN_PERM, 13673 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13674 NL80211_FLAG_NEED_RTNL, 13675 }, 13676 { 13677 .cmd = NL80211_CMD_START_P2P_DEVICE, 13678 .doit = nl80211_start_p2p_device, 13679 .policy = nl80211_policy, 13680 .flags = GENL_UNS_ADMIN_PERM, 13681 .internal_flags = NL80211_FLAG_NEED_WDEV | 13682 NL80211_FLAG_NEED_RTNL, 13683 }, 13684 { 13685 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 13686 .doit = nl80211_stop_p2p_device, 13687 .policy = nl80211_policy, 13688 .flags = GENL_UNS_ADMIN_PERM, 13689 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13690 NL80211_FLAG_NEED_RTNL, 13691 }, 13692 { 13693 .cmd = NL80211_CMD_START_NAN, 13694 .doit = nl80211_start_nan, 13695 .policy = nl80211_policy, 13696 .flags = GENL_ADMIN_PERM, 13697 .internal_flags = NL80211_FLAG_NEED_WDEV | 13698 NL80211_FLAG_NEED_RTNL, 13699 }, 13700 { 13701 .cmd = NL80211_CMD_STOP_NAN, 13702 .doit = nl80211_stop_nan, 13703 .policy = nl80211_policy, 13704 .flags = GENL_ADMIN_PERM, 13705 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13706 NL80211_FLAG_NEED_RTNL, 13707 }, 13708 { 13709 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 13710 .doit = nl80211_nan_add_func, 13711 .policy = nl80211_policy, 13712 .flags = GENL_ADMIN_PERM, 13713 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13714 NL80211_FLAG_NEED_RTNL, 13715 }, 13716 { 13717 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 13718 .doit = nl80211_nan_del_func, 13719 .policy = nl80211_policy, 13720 .flags = GENL_ADMIN_PERM, 13721 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13722 NL80211_FLAG_NEED_RTNL, 13723 }, 13724 { 13725 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 13726 .doit = nl80211_nan_change_config, 13727 .policy = nl80211_policy, 13728 .flags = GENL_ADMIN_PERM, 13729 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13730 NL80211_FLAG_NEED_RTNL, 13731 }, 13732 { 13733 .cmd = NL80211_CMD_SET_MCAST_RATE, 13734 .doit = nl80211_set_mcast_rate, 13735 .policy = nl80211_policy, 13736 .flags = GENL_UNS_ADMIN_PERM, 13737 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13738 NL80211_FLAG_NEED_RTNL, 13739 }, 13740 { 13741 .cmd = NL80211_CMD_SET_MAC_ACL, 13742 .doit = nl80211_set_mac_acl, 13743 .policy = nl80211_policy, 13744 .flags = GENL_UNS_ADMIN_PERM, 13745 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13746 NL80211_FLAG_NEED_RTNL, 13747 }, 13748 { 13749 .cmd = NL80211_CMD_RADAR_DETECT, 13750 .doit = nl80211_start_radar_detection, 13751 .policy = nl80211_policy, 13752 .flags = GENL_UNS_ADMIN_PERM, 13753 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13754 NL80211_FLAG_NEED_RTNL, 13755 }, 13756 { 13757 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 13758 .doit = nl80211_get_protocol_features, 13759 .policy = nl80211_policy, 13760 }, 13761 { 13762 .cmd = NL80211_CMD_UPDATE_FT_IES, 13763 .doit = nl80211_update_ft_ies, 13764 .policy = nl80211_policy, 13765 .flags = GENL_UNS_ADMIN_PERM, 13766 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13767 NL80211_FLAG_NEED_RTNL, 13768 }, 13769 { 13770 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 13771 .doit = nl80211_crit_protocol_start, 13772 .policy = nl80211_policy, 13773 .flags = GENL_UNS_ADMIN_PERM, 13774 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13775 NL80211_FLAG_NEED_RTNL, 13776 }, 13777 { 13778 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 13779 .doit = nl80211_crit_protocol_stop, 13780 .policy = nl80211_policy, 13781 .flags = GENL_UNS_ADMIN_PERM, 13782 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13783 NL80211_FLAG_NEED_RTNL, 13784 }, 13785 { 13786 .cmd = NL80211_CMD_GET_COALESCE, 13787 .doit = nl80211_get_coalesce, 13788 .policy = nl80211_policy, 13789 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13790 NL80211_FLAG_NEED_RTNL, 13791 }, 13792 { 13793 .cmd = NL80211_CMD_SET_COALESCE, 13794 .doit = nl80211_set_coalesce, 13795 .policy = nl80211_policy, 13796 .flags = GENL_UNS_ADMIN_PERM, 13797 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13798 NL80211_FLAG_NEED_RTNL, 13799 }, 13800 { 13801 .cmd = NL80211_CMD_CHANNEL_SWITCH, 13802 .doit = nl80211_channel_switch, 13803 .policy = nl80211_policy, 13804 .flags = GENL_UNS_ADMIN_PERM, 13805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13806 NL80211_FLAG_NEED_RTNL, 13807 }, 13808 { 13809 .cmd = NL80211_CMD_VENDOR, 13810 .doit = nl80211_vendor_cmd, 13811 .dumpit = nl80211_vendor_cmd_dump, 13812 .policy = nl80211_policy, 13813 .flags = GENL_UNS_ADMIN_PERM, 13814 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13815 NL80211_FLAG_NEED_RTNL, 13816 }, 13817 { 13818 .cmd = NL80211_CMD_SET_QOS_MAP, 13819 .doit = nl80211_set_qos_map, 13820 .policy = nl80211_policy, 13821 .flags = GENL_UNS_ADMIN_PERM, 13822 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13823 NL80211_FLAG_NEED_RTNL, 13824 }, 13825 { 13826 .cmd = NL80211_CMD_ADD_TX_TS, 13827 .doit = nl80211_add_tx_ts, 13828 .policy = nl80211_policy, 13829 .flags = GENL_UNS_ADMIN_PERM, 13830 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13831 NL80211_FLAG_NEED_RTNL, 13832 }, 13833 { 13834 .cmd = NL80211_CMD_DEL_TX_TS, 13835 .doit = nl80211_del_tx_ts, 13836 .policy = nl80211_policy, 13837 .flags = GENL_UNS_ADMIN_PERM, 13838 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13839 NL80211_FLAG_NEED_RTNL, 13840 }, 13841 { 13842 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 13843 .doit = nl80211_tdls_channel_switch, 13844 .policy = nl80211_policy, 13845 .flags = GENL_UNS_ADMIN_PERM, 13846 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13847 NL80211_FLAG_NEED_RTNL, 13848 }, 13849 { 13850 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 13851 .doit = nl80211_tdls_cancel_channel_switch, 13852 .policy = nl80211_policy, 13853 .flags = GENL_UNS_ADMIN_PERM, 13854 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13855 NL80211_FLAG_NEED_RTNL, 13856 }, 13857 { 13858 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 13859 .doit = nl80211_set_multicast_to_unicast, 13860 .policy = nl80211_policy, 13861 .flags = GENL_UNS_ADMIN_PERM, 13862 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13863 NL80211_FLAG_NEED_RTNL, 13864 }, 13865 { 13866 .cmd = NL80211_CMD_SET_PMK, 13867 .doit = nl80211_set_pmk, 13868 .policy = nl80211_policy, 13869 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13870 NL80211_FLAG_NEED_RTNL, 13871 }, 13872 { 13873 .cmd = NL80211_CMD_DEL_PMK, 13874 .doit = nl80211_del_pmk, 13875 .policy = nl80211_policy, 13876 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13877 NL80211_FLAG_NEED_RTNL, 13878 }, 13879 { 13880 .cmd = NL80211_CMD_EXTERNAL_AUTH, 13881 .doit = nl80211_external_auth, 13882 .policy = nl80211_policy, 13883 .flags = GENL_ADMIN_PERM, 13884 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13885 NL80211_FLAG_NEED_RTNL, 13886 }, 13887 { 13888 .cmd = NL80211_CMD_CONTROL_PORT_FRAME, 13889 .doit = nl80211_tx_control_port, 13890 .policy = nl80211_policy, 13891 .flags = GENL_UNS_ADMIN_PERM, 13892 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13893 NL80211_FLAG_NEED_RTNL, 13894 }, 13895 { 13896 .cmd = NL80211_CMD_GET_FTM_RESPONDER_STATS, 13897 .doit = nl80211_get_ftm_responder_stats, 13898 .policy = nl80211_policy, 13899 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13900 NL80211_FLAG_NEED_RTNL, 13901 }, 13902 }; 13903 13904 static struct genl_family nl80211_fam __ro_after_init = { 13905 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 13906 .hdrsize = 0, /* no private header */ 13907 .version = 1, /* no particular meaning now */ 13908 .maxattr = NL80211_ATTR_MAX, 13909 .netnsok = true, 13910 .pre_doit = nl80211_pre_doit, 13911 .post_doit = nl80211_post_doit, 13912 .module = THIS_MODULE, 13913 .ops = nl80211_ops, 13914 .n_ops = ARRAY_SIZE(nl80211_ops), 13915 .mcgrps = nl80211_mcgrps, 13916 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 13917 }; 13918 13919 /* notification functions */ 13920 13921 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 13922 enum nl80211_commands cmd) 13923 { 13924 struct sk_buff *msg; 13925 struct nl80211_dump_wiphy_state state = {}; 13926 13927 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 13928 cmd != NL80211_CMD_DEL_WIPHY); 13929 13930 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13931 if (!msg) 13932 return; 13933 13934 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 13935 nlmsg_free(msg); 13936 return; 13937 } 13938 13939 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13940 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13941 } 13942 13943 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 13944 struct wireless_dev *wdev, 13945 enum nl80211_commands cmd) 13946 { 13947 struct sk_buff *msg; 13948 13949 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 13950 cmd != NL80211_CMD_DEL_INTERFACE); 13951 13952 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13953 if (!msg) 13954 return; 13955 13956 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, 13957 cmd == NL80211_CMD_DEL_INTERFACE) < 0) { 13958 nlmsg_free(msg); 13959 return; 13960 } 13961 13962 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13963 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13964 } 13965 13966 static int nl80211_add_scan_req(struct sk_buff *msg, 13967 struct cfg80211_registered_device *rdev) 13968 { 13969 struct cfg80211_scan_request *req = rdev->scan_req; 13970 struct nlattr *nest; 13971 int i; 13972 13973 if (WARN_ON(!req)) 13974 return 0; 13975 13976 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 13977 if (!nest) 13978 goto nla_put_failure; 13979 for (i = 0; i < req->n_ssids; i++) { 13980 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 13981 goto nla_put_failure; 13982 } 13983 nla_nest_end(msg, nest); 13984 13985 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 13986 if (!nest) 13987 goto nla_put_failure; 13988 for (i = 0; i < req->n_channels; i++) { 13989 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 13990 goto nla_put_failure; 13991 } 13992 nla_nest_end(msg, nest); 13993 13994 if (req->ie && 13995 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 13996 goto nla_put_failure; 13997 13998 if (req->flags && 13999 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 14000 goto nla_put_failure; 14001 14002 if (req->info.scan_start_tsf && 14003 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 14004 req->info.scan_start_tsf, NL80211_BSS_PAD) || 14005 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 14006 req->info.tsf_bssid))) 14007 goto nla_put_failure; 14008 14009 return 0; 14010 nla_put_failure: 14011 return -ENOBUFS; 14012 } 14013 14014 static int nl80211_prep_scan_msg(struct sk_buff *msg, 14015 struct cfg80211_registered_device *rdev, 14016 struct wireless_dev *wdev, 14017 u32 portid, u32 seq, int flags, 14018 u32 cmd) 14019 { 14020 void *hdr; 14021 14022 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 14023 if (!hdr) 14024 return -1; 14025 14026 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14027 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14028 wdev->netdev->ifindex)) || 14029 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14030 NL80211_ATTR_PAD)) 14031 goto nla_put_failure; 14032 14033 /* ignore errors and send incomplete event anyway */ 14034 nl80211_add_scan_req(msg, rdev); 14035 14036 genlmsg_end(msg, hdr); 14037 return 0; 14038 14039 nla_put_failure: 14040 genlmsg_cancel(msg, hdr); 14041 return -EMSGSIZE; 14042 } 14043 14044 static int 14045 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 14046 struct cfg80211_sched_scan_request *req, u32 cmd) 14047 { 14048 void *hdr; 14049 14050 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14051 if (!hdr) 14052 return -1; 14053 14054 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 14055 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 14056 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 14057 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 14058 NL80211_ATTR_PAD)) 14059 goto nla_put_failure; 14060 14061 genlmsg_end(msg, hdr); 14062 return 0; 14063 14064 nla_put_failure: 14065 genlmsg_cancel(msg, hdr); 14066 return -EMSGSIZE; 14067 } 14068 14069 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 14070 struct wireless_dev *wdev) 14071 { 14072 struct sk_buff *msg; 14073 14074 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14075 if (!msg) 14076 return; 14077 14078 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 14079 NL80211_CMD_TRIGGER_SCAN) < 0) { 14080 nlmsg_free(msg); 14081 return; 14082 } 14083 14084 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14085 NL80211_MCGRP_SCAN, GFP_KERNEL); 14086 } 14087 14088 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 14089 struct wireless_dev *wdev, bool aborted) 14090 { 14091 struct sk_buff *msg; 14092 14093 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14094 if (!msg) 14095 return NULL; 14096 14097 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 14098 aborted ? NL80211_CMD_SCAN_ABORTED : 14099 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 14100 nlmsg_free(msg); 14101 return NULL; 14102 } 14103 14104 return msg; 14105 } 14106 14107 /* send message created by nl80211_build_scan_msg() */ 14108 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 14109 struct sk_buff *msg) 14110 { 14111 if (!msg) 14112 return; 14113 14114 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14115 NL80211_MCGRP_SCAN, GFP_KERNEL); 14116 } 14117 14118 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 14119 { 14120 struct sk_buff *msg; 14121 14122 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14123 if (!msg) 14124 return; 14125 14126 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 14127 nlmsg_free(msg); 14128 return; 14129 } 14130 14131 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 14132 NL80211_MCGRP_SCAN, GFP_KERNEL); 14133 } 14134 14135 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 14136 struct regulatory_request *request) 14137 { 14138 /* Userspace can always count this one always being set */ 14139 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 14140 goto nla_put_failure; 14141 14142 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 14143 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14144 NL80211_REGDOM_TYPE_WORLD)) 14145 goto nla_put_failure; 14146 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 14147 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14148 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 14149 goto nla_put_failure; 14150 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 14151 request->intersect) { 14152 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14153 NL80211_REGDOM_TYPE_INTERSECTION)) 14154 goto nla_put_failure; 14155 } else { 14156 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14157 NL80211_REGDOM_TYPE_COUNTRY) || 14158 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 14159 request->alpha2)) 14160 goto nla_put_failure; 14161 } 14162 14163 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 14164 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 14165 14166 if (wiphy && 14167 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 14168 goto nla_put_failure; 14169 14170 if (wiphy && 14171 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 14172 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 14173 goto nla_put_failure; 14174 } 14175 14176 return true; 14177 14178 nla_put_failure: 14179 return false; 14180 } 14181 14182 /* 14183 * This can happen on global regulatory changes or device specific settings 14184 * based on custom regulatory domains. 14185 */ 14186 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 14187 struct regulatory_request *request) 14188 { 14189 struct sk_buff *msg; 14190 void *hdr; 14191 14192 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14193 if (!msg) 14194 return; 14195 14196 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 14197 if (!hdr) { 14198 nlmsg_free(msg); 14199 return; 14200 } 14201 14202 if (nl80211_reg_change_event_fill(msg, request) == false) 14203 goto nla_put_failure; 14204 14205 genlmsg_end(msg, hdr); 14206 14207 rcu_read_lock(); 14208 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14209 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14210 rcu_read_unlock(); 14211 14212 return; 14213 14214 nla_put_failure: 14215 nlmsg_free(msg); 14216 } 14217 14218 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 14219 struct net_device *netdev, 14220 const u8 *buf, size_t len, 14221 enum nl80211_commands cmd, gfp_t gfp, 14222 int uapsd_queues) 14223 { 14224 struct sk_buff *msg; 14225 void *hdr; 14226 14227 msg = nlmsg_new(100 + len, gfp); 14228 if (!msg) 14229 return; 14230 14231 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14232 if (!hdr) { 14233 nlmsg_free(msg); 14234 return; 14235 } 14236 14237 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14238 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14239 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 14240 goto nla_put_failure; 14241 14242 if (uapsd_queues >= 0) { 14243 struct nlattr *nla_wmm = 14244 nla_nest_start(msg, NL80211_ATTR_STA_WME); 14245 if (!nla_wmm) 14246 goto nla_put_failure; 14247 14248 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 14249 uapsd_queues)) 14250 goto nla_put_failure; 14251 14252 nla_nest_end(msg, nla_wmm); 14253 } 14254 14255 genlmsg_end(msg, hdr); 14256 14257 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14258 NL80211_MCGRP_MLME, gfp); 14259 return; 14260 14261 nla_put_failure: 14262 nlmsg_free(msg); 14263 } 14264 14265 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 14266 struct net_device *netdev, const u8 *buf, 14267 size_t len, gfp_t gfp) 14268 { 14269 nl80211_send_mlme_event(rdev, netdev, buf, len, 14270 NL80211_CMD_AUTHENTICATE, gfp, -1); 14271 } 14272 14273 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 14274 struct net_device *netdev, const u8 *buf, 14275 size_t len, gfp_t gfp, int uapsd_queues) 14276 { 14277 nl80211_send_mlme_event(rdev, netdev, buf, len, 14278 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 14279 } 14280 14281 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 14282 struct net_device *netdev, const u8 *buf, 14283 size_t len, gfp_t gfp) 14284 { 14285 nl80211_send_mlme_event(rdev, netdev, buf, len, 14286 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 14287 } 14288 14289 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 14290 struct net_device *netdev, const u8 *buf, 14291 size_t len, gfp_t gfp) 14292 { 14293 nl80211_send_mlme_event(rdev, netdev, buf, len, 14294 NL80211_CMD_DISASSOCIATE, gfp, -1); 14295 } 14296 14297 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 14298 size_t len) 14299 { 14300 struct wireless_dev *wdev = dev->ieee80211_ptr; 14301 struct wiphy *wiphy = wdev->wiphy; 14302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14303 const struct ieee80211_mgmt *mgmt = (void *)buf; 14304 u32 cmd; 14305 14306 if (WARN_ON(len < 2)) 14307 return; 14308 14309 if (ieee80211_is_deauth(mgmt->frame_control)) 14310 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 14311 else 14312 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 14313 14314 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 14315 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 14316 } 14317 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 14318 14319 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 14320 struct net_device *netdev, int cmd, 14321 const u8 *addr, gfp_t gfp) 14322 { 14323 struct sk_buff *msg; 14324 void *hdr; 14325 14326 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14327 if (!msg) 14328 return; 14329 14330 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14331 if (!hdr) { 14332 nlmsg_free(msg); 14333 return; 14334 } 14335 14336 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14337 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14338 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 14339 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14340 goto nla_put_failure; 14341 14342 genlmsg_end(msg, hdr); 14343 14344 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14345 NL80211_MCGRP_MLME, gfp); 14346 return; 14347 14348 nla_put_failure: 14349 nlmsg_free(msg); 14350 } 14351 14352 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 14353 struct net_device *netdev, const u8 *addr, 14354 gfp_t gfp) 14355 { 14356 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 14357 addr, gfp); 14358 } 14359 14360 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 14361 struct net_device *netdev, const u8 *addr, 14362 gfp_t gfp) 14363 { 14364 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 14365 addr, gfp); 14366 } 14367 14368 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 14369 struct net_device *netdev, 14370 struct cfg80211_connect_resp_params *cr, 14371 gfp_t gfp) 14372 { 14373 struct sk_buff *msg; 14374 void *hdr; 14375 14376 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 14377 cr->fils.kek_len + cr->fils.pmk_len + 14378 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 14379 if (!msg) 14380 return; 14381 14382 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 14383 if (!hdr) { 14384 nlmsg_free(msg); 14385 return; 14386 } 14387 14388 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14389 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14390 (cr->bssid && 14391 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) || 14392 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 14393 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 14394 cr->status) || 14395 (cr->status < 0 && 14396 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 14397 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 14398 cr->timeout_reason))) || 14399 (cr->req_ie && 14400 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 14401 (cr->resp_ie && 14402 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 14403 cr->resp_ie)) || 14404 (cr->fils.update_erp_next_seq_num && 14405 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 14406 cr->fils.erp_next_seq_num)) || 14407 (cr->status == WLAN_STATUS_SUCCESS && 14408 ((cr->fils.kek && 14409 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len, 14410 cr->fils.kek)) || 14411 (cr->fils.pmk && 14412 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) || 14413 (cr->fils.pmkid && 14414 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid))))) 14415 goto nla_put_failure; 14416 14417 genlmsg_end(msg, hdr); 14418 14419 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14420 NL80211_MCGRP_MLME, gfp); 14421 return; 14422 14423 nla_put_failure: 14424 nlmsg_free(msg); 14425 } 14426 14427 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 14428 struct net_device *netdev, 14429 struct cfg80211_roam_info *info, gfp_t gfp) 14430 { 14431 struct sk_buff *msg; 14432 void *hdr; 14433 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid; 14434 14435 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len + 14436 info->fils.kek_len + info->fils.pmk_len + 14437 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 14438 if (!msg) 14439 return; 14440 14441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 14442 if (!hdr) { 14443 nlmsg_free(msg); 14444 return; 14445 } 14446 14447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14448 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 14450 (info->req_ie && 14451 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 14452 info->req_ie)) || 14453 (info->resp_ie && 14454 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 14455 info->resp_ie)) || 14456 (info->fils.update_erp_next_seq_num && 14457 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 14458 info->fils.erp_next_seq_num)) || 14459 (info->fils.kek && 14460 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len, 14461 info->fils.kek)) || 14462 (info->fils.pmk && 14463 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) || 14464 (info->fils.pmkid && 14465 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid))) 14466 goto nla_put_failure; 14467 14468 genlmsg_end(msg, hdr); 14469 14470 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14471 NL80211_MCGRP_MLME, gfp); 14472 return; 14473 14474 nla_put_failure: 14475 nlmsg_free(msg); 14476 } 14477 14478 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev, 14479 struct net_device *netdev, const u8 *bssid) 14480 { 14481 struct sk_buff *msg; 14482 void *hdr; 14483 14484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14485 if (!msg) 14486 return; 14487 14488 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED); 14489 if (!hdr) { 14490 nlmsg_free(msg); 14491 return; 14492 } 14493 14494 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14495 goto nla_put_failure; 14496 14497 genlmsg_end(msg, hdr); 14498 14499 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14500 NL80211_MCGRP_MLME, GFP_KERNEL); 14501 return; 14502 14503 nla_put_failure: 14504 nlmsg_free(msg); 14505 } 14506 14507 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 14508 struct net_device *netdev, u16 reason, 14509 const u8 *ie, size_t ie_len, bool from_ap) 14510 { 14511 struct sk_buff *msg; 14512 void *hdr; 14513 14514 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 14515 if (!msg) 14516 return; 14517 14518 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 14519 if (!hdr) { 14520 nlmsg_free(msg); 14521 return; 14522 } 14523 14524 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14525 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14526 (reason && 14527 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 14528 (from_ap && 14529 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 14530 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 14531 goto nla_put_failure; 14532 14533 genlmsg_end(msg, hdr); 14534 14535 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14536 NL80211_MCGRP_MLME, GFP_KERNEL); 14537 return; 14538 14539 nla_put_failure: 14540 nlmsg_free(msg); 14541 } 14542 14543 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 14544 struct net_device *netdev, const u8 *bssid, 14545 gfp_t gfp) 14546 { 14547 struct sk_buff *msg; 14548 void *hdr; 14549 14550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14551 if (!msg) 14552 return; 14553 14554 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 14555 if (!hdr) { 14556 nlmsg_free(msg); 14557 return; 14558 } 14559 14560 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14561 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14562 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14563 goto nla_put_failure; 14564 14565 genlmsg_end(msg, hdr); 14566 14567 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14568 NL80211_MCGRP_MLME, gfp); 14569 return; 14570 14571 nla_put_failure: 14572 nlmsg_free(msg); 14573 } 14574 14575 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 14576 const u8* ie, u8 ie_len, gfp_t gfp) 14577 { 14578 struct wireless_dev *wdev = dev->ieee80211_ptr; 14579 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14580 struct sk_buff *msg; 14581 void *hdr; 14582 14583 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 14584 return; 14585 14586 trace_cfg80211_notify_new_peer_candidate(dev, addr); 14587 14588 msg = nlmsg_new(100 + ie_len, gfp); 14589 if (!msg) 14590 return; 14591 14592 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 14593 if (!hdr) { 14594 nlmsg_free(msg); 14595 return; 14596 } 14597 14598 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14599 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14600 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 14601 (ie_len && ie && 14602 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 14603 goto nla_put_failure; 14604 14605 genlmsg_end(msg, hdr); 14606 14607 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14608 NL80211_MCGRP_MLME, gfp); 14609 return; 14610 14611 nla_put_failure: 14612 nlmsg_free(msg); 14613 } 14614 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 14615 14616 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 14617 struct net_device *netdev, const u8 *addr, 14618 enum nl80211_key_type key_type, int key_id, 14619 const u8 *tsc, gfp_t gfp) 14620 { 14621 struct sk_buff *msg; 14622 void *hdr; 14623 14624 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14625 if (!msg) 14626 return; 14627 14628 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 14629 if (!hdr) { 14630 nlmsg_free(msg); 14631 return; 14632 } 14633 14634 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14635 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14636 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 14637 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 14638 (key_id != -1 && 14639 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 14640 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 14641 goto nla_put_failure; 14642 14643 genlmsg_end(msg, hdr); 14644 14645 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14646 NL80211_MCGRP_MLME, gfp); 14647 return; 14648 14649 nla_put_failure: 14650 nlmsg_free(msg); 14651 } 14652 14653 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 14654 struct ieee80211_channel *channel_before, 14655 struct ieee80211_channel *channel_after) 14656 { 14657 struct sk_buff *msg; 14658 void *hdr; 14659 struct nlattr *nl_freq; 14660 14661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 14662 if (!msg) 14663 return; 14664 14665 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 14666 if (!hdr) { 14667 nlmsg_free(msg); 14668 return; 14669 } 14670 14671 /* 14672 * Since we are applying the beacon hint to a wiphy we know its 14673 * wiphy_idx is valid 14674 */ 14675 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 14676 goto nla_put_failure; 14677 14678 /* Before */ 14679 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 14680 if (!nl_freq) 14681 goto nla_put_failure; 14682 14683 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false)) 14684 goto nla_put_failure; 14685 nla_nest_end(msg, nl_freq); 14686 14687 /* After */ 14688 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 14689 if (!nl_freq) 14690 goto nla_put_failure; 14691 14692 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false)) 14693 goto nla_put_failure; 14694 nla_nest_end(msg, nl_freq); 14695 14696 genlmsg_end(msg, hdr); 14697 14698 rcu_read_lock(); 14699 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14700 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14701 rcu_read_unlock(); 14702 14703 return; 14704 14705 nla_put_failure: 14706 nlmsg_free(msg); 14707 } 14708 14709 static void nl80211_send_remain_on_chan_event( 14710 int cmd, struct cfg80211_registered_device *rdev, 14711 struct wireless_dev *wdev, u64 cookie, 14712 struct ieee80211_channel *chan, 14713 unsigned int duration, gfp_t gfp) 14714 { 14715 struct sk_buff *msg; 14716 void *hdr; 14717 14718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14719 if (!msg) 14720 return; 14721 14722 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14723 if (!hdr) { 14724 nlmsg_free(msg); 14725 return; 14726 } 14727 14728 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14729 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14730 wdev->netdev->ifindex)) || 14731 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14732 NL80211_ATTR_PAD) || 14733 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 14734 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 14735 NL80211_CHAN_NO_HT) || 14736 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14737 NL80211_ATTR_PAD)) 14738 goto nla_put_failure; 14739 14740 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 14741 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 14742 goto nla_put_failure; 14743 14744 genlmsg_end(msg, hdr); 14745 14746 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14747 NL80211_MCGRP_MLME, gfp); 14748 return; 14749 14750 nla_put_failure: 14751 nlmsg_free(msg); 14752 } 14753 14754 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 14755 struct ieee80211_channel *chan, 14756 unsigned int duration, gfp_t gfp) 14757 { 14758 struct wiphy *wiphy = wdev->wiphy; 14759 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14760 14761 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 14762 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 14763 rdev, wdev, cookie, chan, 14764 duration, gfp); 14765 } 14766 EXPORT_SYMBOL(cfg80211_ready_on_channel); 14767 14768 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 14769 struct ieee80211_channel *chan, 14770 gfp_t gfp) 14771 { 14772 struct wiphy *wiphy = wdev->wiphy; 14773 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14774 14775 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 14776 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 14777 rdev, wdev, cookie, chan, 0, gfp); 14778 } 14779 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 14780 14781 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 14782 struct station_info *sinfo, gfp_t gfp) 14783 { 14784 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14785 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14786 struct sk_buff *msg; 14787 14788 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 14789 14790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14791 if (!msg) 14792 return; 14793 14794 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 14795 rdev, dev, mac_addr, sinfo) < 0) { 14796 nlmsg_free(msg); 14797 return; 14798 } 14799 14800 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14801 NL80211_MCGRP_MLME, gfp); 14802 } 14803 EXPORT_SYMBOL(cfg80211_new_sta); 14804 14805 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 14806 struct station_info *sinfo, gfp_t gfp) 14807 { 14808 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14809 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14810 struct sk_buff *msg; 14811 struct station_info empty_sinfo = {}; 14812 14813 if (!sinfo) 14814 sinfo = &empty_sinfo; 14815 14816 trace_cfg80211_del_sta(dev, mac_addr); 14817 14818 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14819 if (!msg) { 14820 cfg80211_sinfo_release_content(sinfo); 14821 return; 14822 } 14823 14824 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 14825 rdev, dev, mac_addr, sinfo) < 0) { 14826 nlmsg_free(msg); 14827 return; 14828 } 14829 14830 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14831 NL80211_MCGRP_MLME, gfp); 14832 } 14833 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 14834 14835 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 14836 enum nl80211_connect_failed_reason reason, 14837 gfp_t gfp) 14838 { 14839 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14840 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14841 struct sk_buff *msg; 14842 void *hdr; 14843 14844 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 14845 if (!msg) 14846 return; 14847 14848 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 14849 if (!hdr) { 14850 nlmsg_free(msg); 14851 return; 14852 } 14853 14854 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14855 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 14856 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 14857 goto nla_put_failure; 14858 14859 genlmsg_end(msg, hdr); 14860 14861 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14862 NL80211_MCGRP_MLME, gfp); 14863 return; 14864 14865 nla_put_failure: 14866 nlmsg_free(msg); 14867 } 14868 EXPORT_SYMBOL(cfg80211_conn_failed); 14869 14870 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 14871 const u8 *addr, gfp_t gfp) 14872 { 14873 struct wireless_dev *wdev = dev->ieee80211_ptr; 14874 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14875 struct sk_buff *msg; 14876 void *hdr; 14877 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid); 14878 14879 if (!nlportid) 14880 return false; 14881 14882 msg = nlmsg_new(100, gfp); 14883 if (!msg) 14884 return true; 14885 14886 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14887 if (!hdr) { 14888 nlmsg_free(msg); 14889 return true; 14890 } 14891 14892 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14893 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14894 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14895 goto nla_put_failure; 14896 14897 genlmsg_end(msg, hdr); 14898 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14899 return true; 14900 14901 nla_put_failure: 14902 nlmsg_free(msg); 14903 return true; 14904 } 14905 14906 bool cfg80211_rx_spurious_frame(struct net_device *dev, 14907 const u8 *addr, gfp_t gfp) 14908 { 14909 struct wireless_dev *wdev = dev->ieee80211_ptr; 14910 bool ret; 14911 14912 trace_cfg80211_rx_spurious_frame(dev, addr); 14913 14914 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14915 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 14916 trace_cfg80211_return_bool(false); 14917 return false; 14918 } 14919 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 14920 addr, gfp); 14921 trace_cfg80211_return_bool(ret); 14922 return ret; 14923 } 14924 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 14925 14926 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 14927 const u8 *addr, gfp_t gfp) 14928 { 14929 struct wireless_dev *wdev = dev->ieee80211_ptr; 14930 bool ret; 14931 14932 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 14933 14934 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14935 wdev->iftype != NL80211_IFTYPE_P2P_GO && 14936 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 14937 trace_cfg80211_return_bool(false); 14938 return false; 14939 } 14940 ret = __nl80211_unexpected_frame(dev, 14941 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 14942 addr, gfp); 14943 trace_cfg80211_return_bool(ret); 14944 return ret; 14945 } 14946 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 14947 14948 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 14949 struct wireless_dev *wdev, u32 nlportid, 14950 int freq, int sig_dbm, 14951 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 14952 { 14953 struct net_device *netdev = wdev->netdev; 14954 struct sk_buff *msg; 14955 void *hdr; 14956 14957 msg = nlmsg_new(100 + len, gfp); 14958 if (!msg) 14959 return -ENOMEM; 14960 14961 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14962 if (!hdr) { 14963 nlmsg_free(msg); 14964 return -ENOMEM; 14965 } 14966 14967 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14968 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14969 netdev->ifindex)) || 14970 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14971 NL80211_ATTR_PAD) || 14972 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 14973 (sig_dbm && 14974 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14975 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14976 (flags && 14977 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 14978 goto nla_put_failure; 14979 14980 genlmsg_end(msg, hdr); 14981 14982 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14983 14984 nla_put_failure: 14985 nlmsg_free(msg); 14986 return -ENOBUFS; 14987 } 14988 14989 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 14990 const u8 *buf, size_t len, bool ack, gfp_t gfp) 14991 { 14992 struct wiphy *wiphy = wdev->wiphy; 14993 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14994 struct net_device *netdev = wdev->netdev; 14995 struct sk_buff *msg; 14996 void *hdr; 14997 14998 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 14999 15000 msg = nlmsg_new(100 + len, gfp); 15001 if (!msg) 15002 return; 15003 15004 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 15005 if (!hdr) { 15006 nlmsg_free(msg); 15007 return; 15008 } 15009 15010 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15011 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15012 netdev->ifindex)) || 15013 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15014 NL80211_ATTR_PAD) || 15015 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 15016 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 15017 NL80211_ATTR_PAD) || 15018 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 15019 goto nla_put_failure; 15020 15021 genlmsg_end(msg, hdr); 15022 15023 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15024 NL80211_MCGRP_MLME, gfp); 15025 return; 15026 15027 nla_put_failure: 15028 nlmsg_free(msg); 15029 } 15030 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 15031 15032 static int __nl80211_rx_control_port(struct net_device *dev, 15033 struct sk_buff *skb, 15034 bool unencrypted, gfp_t gfp) 15035 { 15036 struct wireless_dev *wdev = dev->ieee80211_ptr; 15037 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15038 struct ethhdr *ehdr = eth_hdr(skb); 15039 const u8 *addr = ehdr->h_source; 15040 u16 proto = be16_to_cpu(skb->protocol); 15041 struct sk_buff *msg; 15042 void *hdr; 15043 struct nlattr *frame; 15044 15045 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid); 15046 15047 if (!nlportid) 15048 return -ENOENT; 15049 15050 msg = nlmsg_new(100 + skb->len, gfp); 15051 if (!msg) 15052 return -ENOMEM; 15053 15054 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME); 15055 if (!hdr) { 15056 nlmsg_free(msg); 15057 return -ENOBUFS; 15058 } 15059 15060 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15061 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15062 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15063 NL80211_ATTR_PAD) || 15064 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 15065 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) || 15066 (unencrypted && nla_put_flag(msg, 15067 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 15068 goto nla_put_failure; 15069 15070 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len); 15071 if (!frame) 15072 goto nla_put_failure; 15073 15074 skb_copy_bits(skb, 0, nla_data(frame), skb->len); 15075 genlmsg_end(msg, hdr); 15076 15077 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15078 15079 nla_put_failure: 15080 nlmsg_free(msg); 15081 return -ENOBUFS; 15082 } 15083 15084 bool cfg80211_rx_control_port(struct net_device *dev, 15085 struct sk_buff *skb, bool unencrypted) 15086 { 15087 int ret; 15088 15089 trace_cfg80211_rx_control_port(dev, skb, unencrypted); 15090 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC); 15091 trace_cfg80211_return_bool(ret == 0); 15092 return ret == 0; 15093 } 15094 EXPORT_SYMBOL(cfg80211_rx_control_port); 15095 15096 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 15097 const char *mac, gfp_t gfp) 15098 { 15099 struct wireless_dev *wdev = dev->ieee80211_ptr; 15100 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15101 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15102 void **cb; 15103 15104 if (!msg) 15105 return NULL; 15106 15107 cb = (void **)msg->cb; 15108 15109 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 15110 if (!cb[0]) { 15111 nlmsg_free(msg); 15112 return NULL; 15113 } 15114 15115 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15116 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 15117 goto nla_put_failure; 15118 15119 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 15120 goto nla_put_failure; 15121 15122 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 15123 if (!cb[1]) 15124 goto nla_put_failure; 15125 15126 cb[2] = rdev; 15127 15128 return msg; 15129 nla_put_failure: 15130 nlmsg_free(msg); 15131 return NULL; 15132 } 15133 15134 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 15135 { 15136 void **cb = (void **)msg->cb; 15137 struct cfg80211_registered_device *rdev = cb[2]; 15138 15139 nla_nest_end(msg, cb[1]); 15140 genlmsg_end(msg, cb[0]); 15141 15142 memset(msg->cb, 0, sizeof(msg->cb)); 15143 15144 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15145 NL80211_MCGRP_MLME, gfp); 15146 } 15147 15148 void cfg80211_cqm_rssi_notify(struct net_device *dev, 15149 enum nl80211_cqm_rssi_threshold_event rssi_event, 15150 s32 rssi_level, gfp_t gfp) 15151 { 15152 struct sk_buff *msg; 15153 struct wireless_dev *wdev = dev->ieee80211_ptr; 15154 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15155 15156 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 15157 15158 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 15159 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 15160 return; 15161 15162 if (wdev->cqm_config) { 15163 wdev->cqm_config->last_rssi_event_value = rssi_level; 15164 15165 cfg80211_cqm_rssi_update(rdev, dev); 15166 15167 if (rssi_level == 0) 15168 rssi_level = wdev->cqm_config->last_rssi_event_value; 15169 } 15170 15171 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 15172 if (!msg) 15173 return; 15174 15175 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 15176 rssi_event)) 15177 goto nla_put_failure; 15178 15179 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 15180 rssi_level)) 15181 goto nla_put_failure; 15182 15183 cfg80211_send_cqm(msg, gfp); 15184 15185 return; 15186 15187 nla_put_failure: 15188 nlmsg_free(msg); 15189 } 15190 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 15191 15192 void cfg80211_cqm_txe_notify(struct net_device *dev, 15193 const u8 *peer, u32 num_packets, 15194 u32 rate, u32 intvl, gfp_t gfp) 15195 { 15196 struct sk_buff *msg; 15197 15198 msg = cfg80211_prepare_cqm(dev, peer, gfp); 15199 if (!msg) 15200 return; 15201 15202 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 15203 goto nla_put_failure; 15204 15205 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 15206 goto nla_put_failure; 15207 15208 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 15209 goto nla_put_failure; 15210 15211 cfg80211_send_cqm(msg, gfp); 15212 return; 15213 15214 nla_put_failure: 15215 nlmsg_free(msg); 15216 } 15217 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 15218 15219 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 15220 const u8 *peer, u32 num_packets, gfp_t gfp) 15221 { 15222 struct sk_buff *msg; 15223 15224 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 15225 15226 msg = cfg80211_prepare_cqm(dev, peer, gfp); 15227 if (!msg) 15228 return; 15229 15230 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 15231 goto nla_put_failure; 15232 15233 cfg80211_send_cqm(msg, gfp); 15234 return; 15235 15236 nla_put_failure: 15237 nlmsg_free(msg); 15238 } 15239 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 15240 15241 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 15242 { 15243 struct sk_buff *msg; 15244 15245 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 15246 if (!msg) 15247 return; 15248 15249 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 15250 goto nla_put_failure; 15251 15252 cfg80211_send_cqm(msg, gfp); 15253 return; 15254 15255 nla_put_failure: 15256 nlmsg_free(msg); 15257 } 15258 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 15259 15260 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 15261 struct net_device *netdev, const u8 *bssid, 15262 const u8 *replay_ctr, gfp_t gfp) 15263 { 15264 struct sk_buff *msg; 15265 struct nlattr *rekey_attr; 15266 void *hdr; 15267 15268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15269 if (!msg) 15270 return; 15271 15272 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 15273 if (!hdr) { 15274 nlmsg_free(msg); 15275 return; 15276 } 15277 15278 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15279 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15280 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 15281 goto nla_put_failure; 15282 15283 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 15284 if (!rekey_attr) 15285 goto nla_put_failure; 15286 15287 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 15288 NL80211_REPLAY_CTR_LEN, replay_ctr)) 15289 goto nla_put_failure; 15290 15291 nla_nest_end(msg, rekey_attr); 15292 15293 genlmsg_end(msg, hdr); 15294 15295 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15296 NL80211_MCGRP_MLME, gfp); 15297 return; 15298 15299 nla_put_failure: 15300 nlmsg_free(msg); 15301 } 15302 15303 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 15304 const u8 *replay_ctr, gfp_t gfp) 15305 { 15306 struct wireless_dev *wdev = dev->ieee80211_ptr; 15307 struct wiphy *wiphy = wdev->wiphy; 15308 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15309 15310 trace_cfg80211_gtk_rekey_notify(dev, bssid); 15311 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 15312 } 15313 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 15314 15315 static void 15316 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 15317 struct net_device *netdev, int index, 15318 const u8 *bssid, bool preauth, gfp_t gfp) 15319 { 15320 struct sk_buff *msg; 15321 struct nlattr *attr; 15322 void *hdr; 15323 15324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15325 if (!msg) 15326 return; 15327 15328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 15329 if (!hdr) { 15330 nlmsg_free(msg); 15331 return; 15332 } 15333 15334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 15336 goto nla_put_failure; 15337 15338 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 15339 if (!attr) 15340 goto nla_put_failure; 15341 15342 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 15343 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 15344 (preauth && 15345 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 15346 goto nla_put_failure; 15347 15348 nla_nest_end(msg, attr); 15349 15350 genlmsg_end(msg, hdr); 15351 15352 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15353 NL80211_MCGRP_MLME, gfp); 15354 return; 15355 15356 nla_put_failure: 15357 nlmsg_free(msg); 15358 } 15359 15360 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 15361 const u8 *bssid, bool preauth, gfp_t gfp) 15362 { 15363 struct wireless_dev *wdev = dev->ieee80211_ptr; 15364 struct wiphy *wiphy = wdev->wiphy; 15365 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15366 15367 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 15368 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 15369 } 15370 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 15371 15372 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 15373 struct net_device *netdev, 15374 struct cfg80211_chan_def *chandef, 15375 gfp_t gfp, 15376 enum nl80211_commands notif, 15377 u8 count) 15378 { 15379 struct sk_buff *msg; 15380 void *hdr; 15381 15382 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15383 if (!msg) 15384 return; 15385 15386 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 15387 if (!hdr) { 15388 nlmsg_free(msg); 15389 return; 15390 } 15391 15392 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 15393 goto nla_put_failure; 15394 15395 if (nl80211_send_chandef(msg, chandef)) 15396 goto nla_put_failure; 15397 15398 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 15399 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 15400 goto nla_put_failure; 15401 15402 genlmsg_end(msg, hdr); 15403 15404 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15405 NL80211_MCGRP_MLME, gfp); 15406 return; 15407 15408 nla_put_failure: 15409 nlmsg_free(msg); 15410 } 15411 15412 void cfg80211_ch_switch_notify(struct net_device *dev, 15413 struct cfg80211_chan_def *chandef) 15414 { 15415 struct wireless_dev *wdev = dev->ieee80211_ptr; 15416 struct wiphy *wiphy = wdev->wiphy; 15417 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15418 15419 ASSERT_WDEV_LOCK(wdev); 15420 15421 trace_cfg80211_ch_switch_notify(dev, chandef); 15422 15423 wdev->chandef = *chandef; 15424 wdev->preset_chandef = *chandef; 15425 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 15426 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 15427 } 15428 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 15429 15430 void cfg80211_ch_switch_started_notify(struct net_device *dev, 15431 struct cfg80211_chan_def *chandef, 15432 u8 count) 15433 { 15434 struct wireless_dev *wdev = dev->ieee80211_ptr; 15435 struct wiphy *wiphy = wdev->wiphy; 15436 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15437 15438 trace_cfg80211_ch_switch_started_notify(dev, chandef); 15439 15440 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 15441 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 15442 } 15443 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 15444 15445 void 15446 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 15447 const struct cfg80211_chan_def *chandef, 15448 enum nl80211_radar_event event, 15449 struct net_device *netdev, gfp_t gfp) 15450 { 15451 struct sk_buff *msg; 15452 void *hdr; 15453 15454 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15455 if (!msg) 15456 return; 15457 15458 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 15459 if (!hdr) { 15460 nlmsg_free(msg); 15461 return; 15462 } 15463 15464 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 15465 goto nla_put_failure; 15466 15467 /* NOP and radar events don't need a netdev parameter */ 15468 if (netdev) { 15469 struct wireless_dev *wdev = netdev->ieee80211_ptr; 15470 15471 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15472 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15473 NL80211_ATTR_PAD)) 15474 goto nla_put_failure; 15475 } 15476 15477 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 15478 goto nla_put_failure; 15479 15480 if (nl80211_send_chandef(msg, chandef)) 15481 goto nla_put_failure; 15482 15483 genlmsg_end(msg, hdr); 15484 15485 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15486 NL80211_MCGRP_MLME, gfp); 15487 return; 15488 15489 nla_put_failure: 15490 nlmsg_free(msg); 15491 } 15492 15493 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, 15494 struct sta_opmode_info *sta_opmode, 15495 gfp_t gfp) 15496 { 15497 struct sk_buff *msg; 15498 struct wireless_dev *wdev = dev->ieee80211_ptr; 15499 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15500 void *hdr; 15501 15502 if (WARN_ON(!mac)) 15503 return; 15504 15505 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15506 if (!msg) 15507 return; 15508 15509 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED); 15510 if (!hdr) { 15511 nlmsg_free(msg); 15512 return; 15513 } 15514 15515 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 15516 goto nla_put_failure; 15517 15518 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 15519 goto nla_put_failure; 15520 15521 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 15522 goto nla_put_failure; 15523 15524 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) && 15525 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode)) 15526 goto nla_put_failure; 15527 15528 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) && 15529 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw)) 15530 goto nla_put_failure; 15531 15532 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) && 15533 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss)) 15534 goto nla_put_failure; 15535 15536 genlmsg_end(msg, hdr); 15537 15538 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15539 NL80211_MCGRP_MLME, gfp); 15540 15541 return; 15542 15543 nla_put_failure: 15544 nlmsg_free(msg); 15545 } 15546 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify); 15547 15548 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 15549 u64 cookie, bool acked, s32 ack_signal, 15550 bool is_valid_ack_signal, gfp_t gfp) 15551 { 15552 struct wireless_dev *wdev = dev->ieee80211_ptr; 15553 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15554 struct sk_buff *msg; 15555 void *hdr; 15556 15557 trace_cfg80211_probe_status(dev, addr, cookie, acked); 15558 15559 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15560 15561 if (!msg) 15562 return; 15563 15564 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 15565 if (!hdr) { 15566 nlmsg_free(msg); 15567 return; 15568 } 15569 15570 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15571 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15572 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 15573 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 15574 NL80211_ATTR_PAD) || 15575 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) || 15576 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL, 15577 ack_signal))) 15578 goto nla_put_failure; 15579 15580 genlmsg_end(msg, hdr); 15581 15582 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15583 NL80211_MCGRP_MLME, gfp); 15584 return; 15585 15586 nla_put_failure: 15587 nlmsg_free(msg); 15588 } 15589 EXPORT_SYMBOL(cfg80211_probe_status); 15590 15591 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 15592 const u8 *frame, size_t len, 15593 int freq, int sig_dbm) 15594 { 15595 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15596 struct sk_buff *msg; 15597 void *hdr; 15598 struct cfg80211_beacon_registration *reg; 15599 15600 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 15601 15602 spin_lock_bh(&rdev->beacon_registrations_lock); 15603 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 15604 msg = nlmsg_new(len + 100, GFP_ATOMIC); 15605 if (!msg) { 15606 spin_unlock_bh(&rdev->beacon_registrations_lock); 15607 return; 15608 } 15609 15610 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 15611 if (!hdr) 15612 goto nla_put_failure; 15613 15614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15615 (freq && 15616 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 15617 (sig_dbm && 15618 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 15619 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 15620 goto nla_put_failure; 15621 15622 genlmsg_end(msg, hdr); 15623 15624 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 15625 } 15626 spin_unlock_bh(&rdev->beacon_registrations_lock); 15627 return; 15628 15629 nla_put_failure: 15630 spin_unlock_bh(&rdev->beacon_registrations_lock); 15631 nlmsg_free(msg); 15632 } 15633 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 15634 15635 #ifdef CONFIG_PM 15636 static int cfg80211_net_detect_results(struct sk_buff *msg, 15637 struct cfg80211_wowlan_wakeup *wakeup) 15638 { 15639 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 15640 struct nlattr *nl_results, *nl_match, *nl_freqs; 15641 int i, j; 15642 15643 nl_results = nla_nest_start( 15644 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 15645 if (!nl_results) 15646 return -EMSGSIZE; 15647 15648 for (i = 0; i < nd->n_matches; i++) { 15649 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 15650 15651 nl_match = nla_nest_start(msg, i); 15652 if (!nl_match) 15653 break; 15654 15655 /* The SSID attribute is optional in nl80211, but for 15656 * simplicity reasons it's always present in the 15657 * cfg80211 structure. If a driver can't pass the 15658 * SSID, that needs to be changed. A zero length SSID 15659 * is still a valid SSID (wildcard), so it cannot be 15660 * used for this purpose. 15661 */ 15662 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 15663 match->ssid.ssid)) { 15664 nla_nest_cancel(msg, nl_match); 15665 goto out; 15666 } 15667 15668 if (match->n_channels) { 15669 nl_freqs = nla_nest_start( 15670 msg, NL80211_ATTR_SCAN_FREQUENCIES); 15671 if (!nl_freqs) { 15672 nla_nest_cancel(msg, nl_match); 15673 goto out; 15674 } 15675 15676 for (j = 0; j < match->n_channels; j++) { 15677 if (nla_put_u32(msg, j, match->channels[j])) { 15678 nla_nest_cancel(msg, nl_freqs); 15679 nla_nest_cancel(msg, nl_match); 15680 goto out; 15681 } 15682 } 15683 15684 nla_nest_end(msg, nl_freqs); 15685 } 15686 15687 nla_nest_end(msg, nl_match); 15688 } 15689 15690 out: 15691 nla_nest_end(msg, nl_results); 15692 return 0; 15693 } 15694 15695 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 15696 struct cfg80211_wowlan_wakeup *wakeup, 15697 gfp_t gfp) 15698 { 15699 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15700 struct sk_buff *msg; 15701 void *hdr; 15702 int size = 200; 15703 15704 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 15705 15706 if (wakeup) 15707 size += wakeup->packet_present_len; 15708 15709 msg = nlmsg_new(size, gfp); 15710 if (!msg) 15711 return; 15712 15713 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 15714 if (!hdr) 15715 goto free_msg; 15716 15717 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15718 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15719 NL80211_ATTR_PAD)) 15720 goto free_msg; 15721 15722 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15723 wdev->netdev->ifindex)) 15724 goto free_msg; 15725 15726 if (wakeup) { 15727 struct nlattr *reasons; 15728 15729 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 15730 if (!reasons) 15731 goto free_msg; 15732 15733 if (wakeup->disconnect && 15734 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 15735 goto free_msg; 15736 if (wakeup->magic_pkt && 15737 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 15738 goto free_msg; 15739 if (wakeup->gtk_rekey_failure && 15740 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 15741 goto free_msg; 15742 if (wakeup->eap_identity_req && 15743 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 15744 goto free_msg; 15745 if (wakeup->four_way_handshake && 15746 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 15747 goto free_msg; 15748 if (wakeup->rfkill_release && 15749 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 15750 goto free_msg; 15751 15752 if (wakeup->pattern_idx >= 0 && 15753 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 15754 wakeup->pattern_idx)) 15755 goto free_msg; 15756 15757 if (wakeup->tcp_match && 15758 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 15759 goto free_msg; 15760 15761 if (wakeup->tcp_connlost && 15762 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 15763 goto free_msg; 15764 15765 if (wakeup->tcp_nomoretokens && 15766 nla_put_flag(msg, 15767 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 15768 goto free_msg; 15769 15770 if (wakeup->packet) { 15771 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 15772 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 15773 15774 if (!wakeup->packet_80211) { 15775 pkt_attr = 15776 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 15777 len_attr = 15778 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 15779 } 15780 15781 if (wakeup->packet_len && 15782 nla_put_u32(msg, len_attr, wakeup->packet_len)) 15783 goto free_msg; 15784 15785 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 15786 wakeup->packet)) 15787 goto free_msg; 15788 } 15789 15790 if (wakeup->net_detect && 15791 cfg80211_net_detect_results(msg, wakeup)) 15792 goto free_msg; 15793 15794 nla_nest_end(msg, reasons); 15795 } 15796 15797 genlmsg_end(msg, hdr); 15798 15799 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15800 NL80211_MCGRP_MLME, gfp); 15801 return; 15802 15803 free_msg: 15804 nlmsg_free(msg); 15805 } 15806 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 15807 #endif 15808 15809 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 15810 enum nl80211_tdls_operation oper, 15811 u16 reason_code, gfp_t gfp) 15812 { 15813 struct wireless_dev *wdev = dev->ieee80211_ptr; 15814 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15815 struct sk_buff *msg; 15816 void *hdr; 15817 15818 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 15819 reason_code); 15820 15821 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15822 if (!msg) 15823 return; 15824 15825 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 15826 if (!hdr) { 15827 nlmsg_free(msg); 15828 return; 15829 } 15830 15831 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15832 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15833 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 15834 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 15835 (reason_code > 0 && 15836 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 15837 goto nla_put_failure; 15838 15839 genlmsg_end(msg, hdr); 15840 15841 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15842 NL80211_MCGRP_MLME, gfp); 15843 return; 15844 15845 nla_put_failure: 15846 nlmsg_free(msg); 15847 } 15848 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 15849 15850 static int nl80211_netlink_notify(struct notifier_block * nb, 15851 unsigned long state, 15852 void *_notify) 15853 { 15854 struct netlink_notify *notify = _notify; 15855 struct cfg80211_registered_device *rdev; 15856 struct wireless_dev *wdev; 15857 struct cfg80211_beacon_registration *reg, *tmp; 15858 15859 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 15860 return NOTIFY_DONE; 15861 15862 rcu_read_lock(); 15863 15864 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 15865 struct cfg80211_sched_scan_request *sched_scan_req; 15866 15867 list_for_each_entry_rcu(sched_scan_req, 15868 &rdev->sched_scan_req_list, 15869 list) { 15870 if (sched_scan_req->owner_nlportid == notify->portid) { 15871 sched_scan_req->nl_owner_dead = true; 15872 schedule_work(&rdev->sched_scan_stop_wk); 15873 } 15874 } 15875 15876 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 15877 cfg80211_mlme_unregister_socket(wdev, notify->portid); 15878 15879 if (wdev->owner_nlportid == notify->portid) { 15880 wdev->nl_owner_dead = true; 15881 schedule_work(&rdev->destroy_work); 15882 } else if (wdev->conn_owner_nlportid == notify->portid) { 15883 schedule_work(&wdev->disconnect_wk); 15884 } 15885 } 15886 15887 spin_lock_bh(&rdev->beacon_registrations_lock); 15888 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 15889 list) { 15890 if (reg->nlportid == notify->portid) { 15891 list_del(®->list); 15892 kfree(reg); 15893 break; 15894 } 15895 } 15896 spin_unlock_bh(&rdev->beacon_registrations_lock); 15897 } 15898 15899 rcu_read_unlock(); 15900 15901 /* 15902 * It is possible that the user space process that is controlling the 15903 * indoor setting disappeared, so notify the regulatory core. 15904 */ 15905 regulatory_netlink_notify(notify->portid); 15906 return NOTIFY_OK; 15907 } 15908 15909 static struct notifier_block nl80211_netlink_notifier = { 15910 .notifier_call = nl80211_netlink_notify, 15911 }; 15912 15913 void cfg80211_ft_event(struct net_device *netdev, 15914 struct cfg80211_ft_event_params *ft_event) 15915 { 15916 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 15917 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15918 struct sk_buff *msg; 15919 void *hdr; 15920 15921 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 15922 15923 if (!ft_event->target_ap) 15924 return; 15925 15926 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len, 15927 GFP_KERNEL); 15928 if (!msg) 15929 return; 15930 15931 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 15932 if (!hdr) 15933 goto out; 15934 15935 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15936 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15937 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 15938 goto out; 15939 15940 if (ft_event->ies && 15941 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 15942 goto out; 15943 if (ft_event->ric_ies && 15944 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 15945 ft_event->ric_ies)) 15946 goto out; 15947 15948 genlmsg_end(msg, hdr); 15949 15950 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15951 NL80211_MCGRP_MLME, GFP_KERNEL); 15952 return; 15953 out: 15954 nlmsg_free(msg); 15955 } 15956 EXPORT_SYMBOL(cfg80211_ft_event); 15957 15958 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 15959 { 15960 struct cfg80211_registered_device *rdev; 15961 struct sk_buff *msg; 15962 void *hdr; 15963 u32 nlportid; 15964 15965 rdev = wiphy_to_rdev(wdev->wiphy); 15966 if (!rdev->crit_proto_nlportid) 15967 return; 15968 15969 nlportid = rdev->crit_proto_nlportid; 15970 rdev->crit_proto_nlportid = 0; 15971 15972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15973 if (!msg) 15974 return; 15975 15976 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 15977 if (!hdr) 15978 goto nla_put_failure; 15979 15980 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15981 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15982 NL80211_ATTR_PAD)) 15983 goto nla_put_failure; 15984 15985 genlmsg_end(msg, hdr); 15986 15987 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15988 return; 15989 15990 nla_put_failure: 15991 nlmsg_free(msg); 15992 } 15993 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 15994 15995 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 15996 { 15997 struct wiphy *wiphy = wdev->wiphy; 15998 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15999 struct sk_buff *msg; 16000 void *hdr; 16001 16002 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 16003 if (!msg) 16004 return; 16005 16006 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 16007 if (!hdr) 16008 goto out; 16009 16010 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16011 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 16012 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16013 NL80211_ATTR_PAD)) 16014 goto out; 16015 16016 genlmsg_end(msg, hdr); 16017 16018 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 16019 NL80211_MCGRP_MLME, GFP_KERNEL); 16020 return; 16021 out: 16022 nlmsg_free(msg); 16023 } 16024 16025 int cfg80211_external_auth_request(struct net_device *dev, 16026 struct cfg80211_external_auth_params *params, 16027 gfp_t gfp) 16028 { 16029 struct wireless_dev *wdev = dev->ieee80211_ptr; 16030 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16031 struct sk_buff *msg; 16032 void *hdr; 16033 16034 if (!wdev->conn_owner_nlportid) 16035 return -EINVAL; 16036 16037 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16038 if (!msg) 16039 return -ENOMEM; 16040 16041 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH); 16042 if (!hdr) 16043 goto nla_put_failure; 16044 16045 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16046 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16047 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) || 16048 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION, 16049 params->action) || 16050 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) || 16051 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len, 16052 params->ssid.ssid)) 16053 goto nla_put_failure; 16054 16055 genlmsg_end(msg, hdr); 16056 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 16057 wdev->conn_owner_nlportid); 16058 return 0; 16059 16060 nla_put_failure: 16061 nlmsg_free(msg); 16062 return -ENOBUFS; 16063 } 16064 EXPORT_SYMBOL(cfg80211_external_auth_request); 16065 16066 /* initialisation/exit functions */ 16067 16068 int __init nl80211_init(void) 16069 { 16070 int err; 16071 16072 err = genl_register_family(&nl80211_fam); 16073 if (err) 16074 return err; 16075 16076 err = netlink_register_notifier(&nl80211_netlink_notifier); 16077 if (err) 16078 goto err_out; 16079 16080 return 0; 16081 err_out: 16082 genl_unregister_family(&nl80211_fam); 16083 return err; 16084 } 16085 16086 void nl80211_exit(void) 16087 { 16088 netlink_unregister_notifier(&nl80211_netlink_notifier); 16089 genl_unregister_family(&nl80211_fam); 16090 } 16091