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 /* policy for the attributes */ 204 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 205 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 206 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 207 .len = 20-1 }, 208 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 209 210 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 211 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 212 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 213 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 214 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 215 216 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 217 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 218 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 219 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 220 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 221 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 222 223 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 224 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 225 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 226 227 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 228 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 229 230 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 231 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 232 .len = WLAN_MAX_KEY_LEN }, 233 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 234 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 235 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 236 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 237 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 238 239 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 240 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 241 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 242 .len = IEEE80211_MAX_DATA_LEN }, 243 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 244 .len = IEEE80211_MAX_DATA_LEN }, 245 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 246 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 247 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 248 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 249 .len = NL80211_MAX_SUPP_RATES }, 250 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 251 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 252 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 253 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 254 .len = IEEE80211_MAX_MESH_ID_LEN }, 255 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 256 257 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 258 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 259 260 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 261 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 262 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 263 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 264 .len = NL80211_MAX_SUPP_RATES }, 265 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 266 267 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 268 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 269 270 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 271 272 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 273 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 274 .len = IEEE80211_MAX_DATA_LEN }, 275 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 276 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 277 278 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 279 .len = IEEE80211_MAX_SSID_LEN }, 280 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 281 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 282 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 283 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 284 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 285 [NL80211_ATTR_STA_FLAGS2] = { 286 .len = sizeof(struct nl80211_sta_flag_update), 287 }, 288 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 289 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 290 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 291 [NL80211_ATTR_CONTROL_PORT_OVER_NL80211] = { .type = NLA_FLAG }, 292 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 293 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 294 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 295 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 296 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 297 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN }, 298 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 299 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 300 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 301 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 302 .len = IEEE80211_MAX_DATA_LEN }, 303 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 304 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 305 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 306 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 307 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 308 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 309 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 310 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 311 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 312 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 313 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 314 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 315 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 316 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 317 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 318 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 319 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 320 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 321 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 322 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 323 .len = IEEE80211_MAX_DATA_LEN }, 324 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 325 .len = IEEE80211_MAX_DATA_LEN }, 326 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 327 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 328 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 329 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 330 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 331 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 332 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 333 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 334 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 336 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 337 .len = IEEE80211_MAX_DATA_LEN }, 338 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 339 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 340 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 341 .len = NL80211_HT_CAPABILITY_LEN 342 }, 343 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 344 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 345 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 346 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 347 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 348 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, }, 349 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 350 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 351 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 352 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 353 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 }, 354 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 355 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 356 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 357 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 358 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 359 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 360 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 361 .len = NL80211_VHT_CAPABILITY_LEN, 362 }, 363 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 364 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 365 .len = IEEE80211_MAX_DATA_LEN }, 366 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 367 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 368 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 369 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 370 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 371 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 372 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 373 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 374 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 375 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 376 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 377 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 378 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 379 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 380 .len = IEEE80211_QOS_MAP_LEN_MAX }, 381 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 382 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 383 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 384 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 385 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 386 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 387 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 388 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 389 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 390 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 391 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 392 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 393 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 394 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 395 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 396 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 397 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 398 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 }, 399 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 400 .len = VHT_MUMIMO_GROUPS_DATA_LEN 401 }, 402 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN }, 403 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 }, 404 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 405 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 406 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 407 .len = FILS_MAX_KEK_LEN }, 408 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN }, 409 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 410 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN }, 411 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 412 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 413 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 414 }, 415 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 416 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 417 .len = FILS_ERP_MAX_USERNAME_LEN }, 418 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 419 .len = FILS_ERP_MAX_REALM_LEN }, 420 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 421 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 422 .len = FILS_ERP_MAX_RRK_LEN }, 423 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 }, 424 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 425 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 426 [NL80211_ATTR_EXTERNAL_AUTH_SUPPORT] = { .type = NLA_FLAG }, 427 428 [NL80211_ATTR_TXQ_LIMIT] = { .type = NLA_U32 }, 429 [NL80211_ATTR_TXQ_MEMORY_LIMIT] = { .type = NLA_U32 }, 430 [NL80211_ATTR_TXQ_QUANTUM] = { .type = NLA_U32 }, 431 [NL80211_ATTR_HE_CAPABILITY] = { .type = NLA_BINARY, 432 .len = NL80211_HE_MAX_CAPABILITY_LEN }, 433 }; 434 435 /* policy for the key attributes */ 436 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 437 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 438 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 439 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 440 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 441 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 442 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 443 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 444 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 445 }; 446 447 /* policy for the key default flags */ 448 static const struct nla_policy 449 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 450 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 451 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 452 }; 453 454 #ifdef CONFIG_PM 455 /* policy for WoWLAN attributes */ 456 static const struct nla_policy 457 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 458 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 459 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 460 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 461 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 462 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 463 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 464 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 465 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 466 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 467 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 468 }; 469 470 static const struct nla_policy 471 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 472 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 473 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 474 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 475 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 476 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 477 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 478 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 479 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 480 }, 481 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 482 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 483 }, 484 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 485 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 486 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 487 }; 488 #endif /* CONFIG_PM */ 489 490 /* policy for coalesce rule attributes */ 491 static const struct nla_policy 492 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 493 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 494 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 495 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 496 }; 497 498 /* policy for GTK rekey offload attributes */ 499 static const struct nla_policy 500 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 501 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 502 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 503 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 504 }; 505 506 static const struct nla_policy 507 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 508 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 509 .len = IEEE80211_MAX_SSID_LEN }, 510 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN }, 511 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 512 }; 513 514 static const struct nla_policy 515 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 516 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 517 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 518 }; 519 520 static const struct nla_policy 521 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 522 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 523 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 524 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 525 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 526 }, 527 }; 528 529 /* policy for NAN function attributes */ 530 static const struct nla_policy 531 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 532 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 }, 533 [NL80211_NAN_FUNC_SERVICE_ID] = { 534 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 535 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 536 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 537 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 538 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 539 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 540 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN }, 541 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 542 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 543 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 544 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 545 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 546 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 547 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 548 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 549 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 550 }; 551 552 /* policy for Service Response Filter attributes */ 553 static const struct nla_policy 554 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 555 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 556 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 557 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 558 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 559 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 560 }; 561 562 /* policy for packet pattern attributes */ 563 static const struct nla_policy 564 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 565 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 566 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 567 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 568 }; 569 570 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 571 struct netlink_callback *cb, 572 struct cfg80211_registered_device **rdev, 573 struct wireless_dev **wdev) 574 { 575 int err; 576 577 if (!cb->args[0]) { 578 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 579 genl_family_attrbuf(&nl80211_fam), 580 nl80211_fam.maxattr, nl80211_policy, NULL); 581 if (err) 582 return err; 583 584 *wdev = __cfg80211_wdev_from_attrs( 585 sock_net(skb->sk), 586 genl_family_attrbuf(&nl80211_fam)); 587 if (IS_ERR(*wdev)) 588 return PTR_ERR(*wdev); 589 *rdev = wiphy_to_rdev((*wdev)->wiphy); 590 /* 0 is the first index - add 1 to parse only once */ 591 cb->args[0] = (*rdev)->wiphy_idx + 1; 592 cb->args[1] = (*wdev)->identifier; 593 } else { 594 /* subtract the 1 again here */ 595 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 596 struct wireless_dev *tmp; 597 598 if (!wiphy) 599 return -ENODEV; 600 *rdev = wiphy_to_rdev(wiphy); 601 *wdev = NULL; 602 603 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 604 if (tmp->identifier == cb->args[1]) { 605 *wdev = tmp; 606 break; 607 } 608 } 609 610 if (!*wdev) 611 return -ENODEV; 612 } 613 614 return 0; 615 } 616 617 /* IE validation */ 618 static bool is_valid_ie_attr(const struct nlattr *attr) 619 { 620 const u8 *pos; 621 int len; 622 623 if (!attr) 624 return true; 625 626 pos = nla_data(attr); 627 len = nla_len(attr); 628 629 while (len) { 630 u8 elemlen; 631 632 if (len < 2) 633 return false; 634 len -= 2; 635 636 elemlen = pos[1]; 637 if (elemlen > len) 638 return false; 639 640 len -= elemlen; 641 pos += 2 + elemlen; 642 } 643 644 return true; 645 } 646 647 /* message building helper */ 648 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 649 int flags, u8 cmd) 650 { 651 /* since there is no private header just add the generic one */ 652 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 653 } 654 655 static int nl80211_msg_put_wmm_rules(struct sk_buff *msg, 656 const struct ieee80211_reg_rule *rule) 657 { 658 int j; 659 struct nlattr *nl_wmm_rules = 660 nla_nest_start(msg, NL80211_FREQUENCY_ATTR_WMM); 661 662 if (!nl_wmm_rules) 663 goto nla_put_failure; 664 665 for (j = 0; j < IEEE80211_NUM_ACS; j++) { 666 struct nlattr *nl_wmm_rule = nla_nest_start(msg, j); 667 668 if (!nl_wmm_rule) 669 goto nla_put_failure; 670 671 if (nla_put_u16(msg, NL80211_WMMR_CW_MIN, 672 rule->wmm_rule.client[j].cw_min) || 673 nla_put_u16(msg, NL80211_WMMR_CW_MAX, 674 rule->wmm_rule.client[j].cw_max) || 675 nla_put_u8(msg, NL80211_WMMR_AIFSN, 676 rule->wmm_rule.client[j].aifsn) || 677 nla_put_u16(msg, NL80211_WMMR_TXOP, 678 rule->wmm_rule.client[j].cot)) 679 goto nla_put_failure; 680 681 nla_nest_end(msg, nl_wmm_rule); 682 } 683 nla_nest_end(msg, nl_wmm_rules); 684 685 return 0; 686 687 nla_put_failure: 688 return -ENOBUFS; 689 } 690 691 static int nl80211_msg_put_channel(struct sk_buff *msg, struct wiphy *wiphy, 692 struct ieee80211_channel *chan, 693 bool large) 694 { 695 /* Some channels must be completely excluded from the 696 * list to protect old user-space tools from breaking 697 */ 698 if (!large && chan->flags & 699 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 700 return 0; 701 702 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 703 chan->center_freq)) 704 goto nla_put_failure; 705 706 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 707 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 708 goto nla_put_failure; 709 if (chan->flags & IEEE80211_CHAN_NO_IR) { 710 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 711 goto nla_put_failure; 712 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 713 goto nla_put_failure; 714 } 715 if (chan->flags & IEEE80211_CHAN_RADAR) { 716 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 717 goto nla_put_failure; 718 if (large) { 719 u32 time; 720 721 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 722 723 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 724 chan->dfs_state)) 725 goto nla_put_failure; 726 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 727 time)) 728 goto nla_put_failure; 729 if (nla_put_u32(msg, 730 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 731 chan->dfs_cac_ms)) 732 goto nla_put_failure; 733 } 734 } 735 736 if (large) { 737 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 738 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 739 goto nla_put_failure; 740 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 741 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 742 goto nla_put_failure; 743 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 744 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 745 goto nla_put_failure; 746 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 747 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 748 goto nla_put_failure; 749 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 750 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 751 goto nla_put_failure; 752 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 753 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 754 goto nla_put_failure; 755 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 756 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 757 goto nla_put_failure; 758 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 759 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 760 goto nla_put_failure; 761 } 762 763 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 764 DBM_TO_MBM(chan->max_power))) 765 goto nla_put_failure; 766 767 if (large) { 768 const struct ieee80211_reg_rule *rule = 769 freq_reg_info(wiphy, MHZ_TO_KHZ(chan->center_freq)); 770 771 if (!IS_ERR_OR_NULL(rule) && rule->has_wmm) { 772 if (nl80211_msg_put_wmm_rules(msg, rule)) 773 goto nla_put_failure; 774 } 775 } 776 777 return 0; 778 779 nla_put_failure: 780 return -ENOBUFS; 781 } 782 783 static bool nl80211_put_txq_stats(struct sk_buff *msg, 784 struct cfg80211_txq_stats *txqstats, 785 int attrtype) 786 { 787 struct nlattr *txqattr; 788 789 #define PUT_TXQVAL_U32(attr, memb) do { \ 790 if (txqstats->filled & BIT(NL80211_TXQ_STATS_ ## attr) && \ 791 nla_put_u32(msg, NL80211_TXQ_STATS_ ## attr, txqstats->memb)) \ 792 return false; \ 793 } while (0) 794 795 txqattr = nla_nest_start(msg, attrtype); 796 if (!txqattr) 797 return false; 798 799 PUT_TXQVAL_U32(BACKLOG_BYTES, backlog_bytes); 800 PUT_TXQVAL_U32(BACKLOG_PACKETS, backlog_packets); 801 PUT_TXQVAL_U32(FLOWS, flows); 802 PUT_TXQVAL_U32(DROPS, drops); 803 PUT_TXQVAL_U32(ECN_MARKS, ecn_marks); 804 PUT_TXQVAL_U32(OVERLIMIT, overlimit); 805 PUT_TXQVAL_U32(OVERMEMORY, overmemory); 806 PUT_TXQVAL_U32(COLLISIONS, collisions); 807 PUT_TXQVAL_U32(TX_BYTES, tx_bytes); 808 PUT_TXQVAL_U32(TX_PACKETS, tx_packets); 809 PUT_TXQVAL_U32(MAX_FLOWS, max_flows); 810 nla_nest_end(msg, txqattr); 811 812 #undef PUT_TXQVAL_U32 813 return true; 814 } 815 816 /* netlink command implementations */ 817 818 struct key_parse { 819 struct key_params p; 820 int idx; 821 int type; 822 bool def, defmgmt; 823 bool def_uni, def_multi; 824 }; 825 826 static int nl80211_parse_key_new(struct genl_info *info, struct nlattr *key, 827 struct key_parse *k) 828 { 829 struct nlattr *tb[NL80211_KEY_MAX + 1]; 830 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 831 nl80211_key_policy, info->extack); 832 if (err) 833 return err; 834 835 k->def = !!tb[NL80211_KEY_DEFAULT]; 836 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 837 838 if (k->def) { 839 k->def_uni = true; 840 k->def_multi = true; 841 } 842 if (k->defmgmt) 843 k->def_multi = true; 844 845 if (tb[NL80211_KEY_IDX]) 846 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 847 848 if (tb[NL80211_KEY_DATA]) { 849 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 850 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 851 } 852 853 if (tb[NL80211_KEY_SEQ]) { 854 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 855 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 856 } 857 858 if (tb[NL80211_KEY_CIPHER]) 859 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 860 861 if (tb[NL80211_KEY_TYPE]) { 862 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 863 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 864 return genl_err_attr(info, -EINVAL, 865 tb[NL80211_KEY_TYPE]); 866 } 867 868 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 869 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 870 871 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 872 tb[NL80211_KEY_DEFAULT_TYPES], 873 nl80211_key_default_policy, 874 info->extack); 875 if (err) 876 return err; 877 878 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 879 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 880 } 881 882 return 0; 883 } 884 885 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 886 { 887 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 888 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 889 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 890 } 891 892 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 893 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 894 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 895 } 896 897 if (info->attrs[NL80211_ATTR_KEY_IDX]) 898 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 899 900 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 901 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 902 903 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 904 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 905 906 if (k->def) { 907 k->def_uni = true; 908 k->def_multi = true; 909 } 910 if (k->defmgmt) 911 k->def_multi = true; 912 913 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 914 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 915 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) { 916 GENL_SET_ERR_MSG(info, "key type out of range"); 917 return -EINVAL; 918 } 919 } 920 921 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 922 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 923 int err = nla_parse_nested(kdt, 924 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 925 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 926 nl80211_key_default_policy, 927 info->extack); 928 if (err) 929 return err; 930 931 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 932 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 933 } 934 935 return 0; 936 } 937 938 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 939 { 940 int err; 941 942 memset(k, 0, sizeof(*k)); 943 k->idx = -1; 944 k->type = -1; 945 946 if (info->attrs[NL80211_ATTR_KEY]) 947 err = nl80211_parse_key_new(info, info->attrs[NL80211_ATTR_KEY], k); 948 else 949 err = nl80211_parse_key_old(info, k); 950 951 if (err) 952 return err; 953 954 if (k->def && k->defmgmt) { 955 GENL_SET_ERR_MSG(info, "key with def && defmgmt is invalid"); 956 return -EINVAL; 957 } 958 959 if (k->defmgmt) { 960 if (k->def_uni || !k->def_multi) { 961 GENL_SET_ERR_MSG(info, "defmgmt key must be mcast"); 962 return -EINVAL; 963 } 964 } 965 966 if (k->idx != -1) { 967 if (k->defmgmt) { 968 if (k->idx < 4 || k->idx > 5) { 969 GENL_SET_ERR_MSG(info, 970 "defmgmt key idx not 4 or 5"); 971 return -EINVAL; 972 } 973 } else if (k->def) { 974 if (k->idx < 0 || k->idx > 3) { 975 GENL_SET_ERR_MSG(info, "def key idx not 0-3"); 976 return -EINVAL; 977 } 978 } else { 979 if (k->idx < 0 || k->idx > 5) { 980 GENL_SET_ERR_MSG(info, "key idx not 0-5"); 981 return -EINVAL; 982 } 983 } 984 } 985 986 return 0; 987 } 988 989 static struct cfg80211_cached_keys * 990 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 991 struct genl_info *info, bool *no_ht) 992 { 993 struct nlattr *keys = info->attrs[NL80211_ATTR_KEYS]; 994 struct key_parse parse; 995 struct nlattr *key; 996 struct cfg80211_cached_keys *result; 997 int rem, err, def = 0; 998 bool have_key = false; 999 1000 nla_for_each_nested(key, keys, rem) { 1001 have_key = true; 1002 break; 1003 } 1004 1005 if (!have_key) 1006 return NULL; 1007 1008 result = kzalloc(sizeof(*result), GFP_KERNEL); 1009 if (!result) 1010 return ERR_PTR(-ENOMEM); 1011 1012 result->def = -1; 1013 1014 nla_for_each_nested(key, keys, rem) { 1015 memset(&parse, 0, sizeof(parse)); 1016 parse.idx = -1; 1017 1018 err = nl80211_parse_key_new(info, key, &parse); 1019 if (err) 1020 goto error; 1021 err = -EINVAL; 1022 if (!parse.p.key) 1023 goto error; 1024 if (parse.idx < 0 || parse.idx > 3) { 1025 GENL_SET_ERR_MSG(info, "key index out of range [0-3]"); 1026 goto error; 1027 } 1028 if (parse.def) { 1029 if (def) { 1030 GENL_SET_ERR_MSG(info, 1031 "only one key can be default"); 1032 goto error; 1033 } 1034 def = 1; 1035 result->def = parse.idx; 1036 if (!parse.def_uni || !parse.def_multi) 1037 goto error; 1038 } else if (parse.defmgmt) 1039 goto error; 1040 err = cfg80211_validate_key_settings(rdev, &parse.p, 1041 parse.idx, false, NULL); 1042 if (err) 1043 goto error; 1044 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 1045 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 1046 GENL_SET_ERR_MSG(info, "connect key must be WEP"); 1047 err = -EINVAL; 1048 goto error; 1049 } 1050 result->params[parse.idx].cipher = parse.p.cipher; 1051 result->params[parse.idx].key_len = parse.p.key_len; 1052 result->params[parse.idx].key = result->data[parse.idx]; 1053 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 1054 1055 /* must be WEP key if we got here */ 1056 if (no_ht) 1057 *no_ht = true; 1058 } 1059 1060 if (result->def < 0) { 1061 err = -EINVAL; 1062 GENL_SET_ERR_MSG(info, "need a default/TX key"); 1063 goto error; 1064 } 1065 1066 return result; 1067 error: 1068 kfree(result); 1069 return ERR_PTR(err); 1070 } 1071 1072 static int nl80211_key_allowed(struct wireless_dev *wdev) 1073 { 1074 ASSERT_WDEV_LOCK(wdev); 1075 1076 switch (wdev->iftype) { 1077 case NL80211_IFTYPE_AP: 1078 case NL80211_IFTYPE_AP_VLAN: 1079 case NL80211_IFTYPE_P2P_GO: 1080 case NL80211_IFTYPE_MESH_POINT: 1081 break; 1082 case NL80211_IFTYPE_ADHOC: 1083 case NL80211_IFTYPE_STATION: 1084 case NL80211_IFTYPE_P2P_CLIENT: 1085 if (!wdev->current_bss) 1086 return -ENOLINK; 1087 break; 1088 case NL80211_IFTYPE_UNSPECIFIED: 1089 case NL80211_IFTYPE_OCB: 1090 case NL80211_IFTYPE_MONITOR: 1091 case NL80211_IFTYPE_NAN: 1092 case NL80211_IFTYPE_P2P_DEVICE: 1093 case NL80211_IFTYPE_WDS: 1094 case NUM_NL80211_IFTYPES: 1095 return -EINVAL; 1096 } 1097 1098 return 0; 1099 } 1100 1101 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 1102 struct nlattr *tb) 1103 { 1104 struct ieee80211_channel *chan; 1105 1106 if (tb == NULL) 1107 return NULL; 1108 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 1109 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 1110 return NULL; 1111 return chan; 1112 } 1113 1114 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1115 { 1116 struct nlattr *nl_modes = nla_nest_start(msg, attr); 1117 int i; 1118 1119 if (!nl_modes) 1120 goto nla_put_failure; 1121 1122 i = 0; 1123 while (ifmodes) { 1124 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1125 goto nla_put_failure; 1126 ifmodes >>= 1; 1127 i++; 1128 } 1129 1130 nla_nest_end(msg, nl_modes); 1131 return 0; 1132 1133 nla_put_failure: 1134 return -ENOBUFS; 1135 } 1136 1137 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1138 struct sk_buff *msg, 1139 bool large) 1140 { 1141 struct nlattr *nl_combis; 1142 int i, j; 1143 1144 nl_combis = nla_nest_start(msg, 1145 NL80211_ATTR_INTERFACE_COMBINATIONS); 1146 if (!nl_combis) 1147 goto nla_put_failure; 1148 1149 for (i = 0; i < wiphy->n_iface_combinations; i++) { 1150 const struct ieee80211_iface_combination *c; 1151 struct nlattr *nl_combi, *nl_limits; 1152 1153 c = &wiphy->iface_combinations[i]; 1154 1155 nl_combi = nla_nest_start(msg, i + 1); 1156 if (!nl_combi) 1157 goto nla_put_failure; 1158 1159 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 1160 if (!nl_limits) 1161 goto nla_put_failure; 1162 1163 for (j = 0; j < c->n_limits; j++) { 1164 struct nlattr *nl_limit; 1165 1166 nl_limit = nla_nest_start(msg, j + 1); 1167 if (!nl_limit) 1168 goto nla_put_failure; 1169 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 1170 c->limits[j].max)) 1171 goto nla_put_failure; 1172 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1173 c->limits[j].types)) 1174 goto nla_put_failure; 1175 nla_nest_end(msg, nl_limit); 1176 } 1177 1178 nla_nest_end(msg, nl_limits); 1179 1180 if (c->beacon_int_infra_match && 1181 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1182 goto nla_put_failure; 1183 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1184 c->num_different_channels) || 1185 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1186 c->max_interfaces)) 1187 goto nla_put_failure; 1188 if (large && 1189 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1190 c->radar_detect_widths) || 1191 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1192 c->radar_detect_regions))) 1193 goto nla_put_failure; 1194 if (c->beacon_int_min_gcd && 1195 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1196 c->beacon_int_min_gcd)) 1197 goto nla_put_failure; 1198 1199 nla_nest_end(msg, nl_combi); 1200 } 1201 1202 nla_nest_end(msg, nl_combis); 1203 1204 return 0; 1205 nla_put_failure: 1206 return -ENOBUFS; 1207 } 1208 1209 #ifdef CONFIG_PM 1210 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1211 struct sk_buff *msg) 1212 { 1213 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1214 struct nlattr *nl_tcp; 1215 1216 if (!tcp) 1217 return 0; 1218 1219 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1220 if (!nl_tcp) 1221 return -ENOBUFS; 1222 1223 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1224 tcp->data_payload_max)) 1225 return -ENOBUFS; 1226 1227 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1228 tcp->data_payload_max)) 1229 return -ENOBUFS; 1230 1231 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1232 return -ENOBUFS; 1233 1234 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1235 sizeof(*tcp->tok), tcp->tok)) 1236 return -ENOBUFS; 1237 1238 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1239 tcp->data_interval_max)) 1240 return -ENOBUFS; 1241 1242 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1243 tcp->wake_payload_max)) 1244 return -ENOBUFS; 1245 1246 nla_nest_end(msg, nl_tcp); 1247 return 0; 1248 } 1249 1250 static int nl80211_send_wowlan(struct sk_buff *msg, 1251 struct cfg80211_registered_device *rdev, 1252 bool large) 1253 { 1254 struct nlattr *nl_wowlan; 1255 1256 if (!rdev->wiphy.wowlan) 1257 return 0; 1258 1259 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1260 if (!nl_wowlan) 1261 return -ENOBUFS; 1262 1263 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1264 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1265 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1266 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1267 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1268 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1269 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1270 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1271 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1272 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1273 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1274 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1275 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1276 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1277 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1278 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1279 return -ENOBUFS; 1280 1281 if (rdev->wiphy.wowlan->n_patterns) { 1282 struct nl80211_pattern_support pat = { 1283 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1284 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1285 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1286 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1287 }; 1288 1289 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1290 sizeof(pat), &pat)) 1291 return -ENOBUFS; 1292 } 1293 1294 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1295 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1296 rdev->wiphy.wowlan->max_nd_match_sets)) 1297 return -ENOBUFS; 1298 1299 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1300 return -ENOBUFS; 1301 1302 nla_nest_end(msg, nl_wowlan); 1303 1304 return 0; 1305 } 1306 #endif 1307 1308 static int nl80211_send_coalesce(struct sk_buff *msg, 1309 struct cfg80211_registered_device *rdev) 1310 { 1311 struct nl80211_coalesce_rule_support rule; 1312 1313 if (!rdev->wiphy.coalesce) 1314 return 0; 1315 1316 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1317 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1318 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1319 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1320 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1321 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1322 1323 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1324 return -ENOBUFS; 1325 1326 return 0; 1327 } 1328 1329 static int 1330 nl80211_send_iftype_data(struct sk_buff *msg, 1331 const struct ieee80211_sband_iftype_data *iftdata) 1332 { 1333 const struct ieee80211_sta_he_cap *he_cap = &iftdata->he_cap; 1334 1335 if (nl80211_put_iftypes(msg, NL80211_BAND_IFTYPE_ATTR_IFTYPES, 1336 iftdata->types_mask)) 1337 return -ENOBUFS; 1338 1339 if (he_cap->has_he) { 1340 if (nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MAC, 1341 sizeof(he_cap->he_cap_elem.mac_cap_info), 1342 he_cap->he_cap_elem.mac_cap_info) || 1343 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PHY, 1344 sizeof(he_cap->he_cap_elem.phy_cap_info), 1345 he_cap->he_cap_elem.phy_cap_info) || 1346 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_MCS_SET, 1347 sizeof(he_cap->he_mcs_nss_supp), 1348 &he_cap->he_mcs_nss_supp) || 1349 nla_put(msg, NL80211_BAND_IFTYPE_ATTR_HE_CAP_PPE, 1350 sizeof(he_cap->ppe_thres), he_cap->ppe_thres)) 1351 return -ENOBUFS; 1352 } 1353 1354 return 0; 1355 } 1356 1357 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1358 struct ieee80211_supported_band *sband) 1359 { 1360 struct nlattr *nl_rates, *nl_rate; 1361 struct ieee80211_rate *rate; 1362 int i; 1363 1364 /* add HT info */ 1365 if (sband->ht_cap.ht_supported && 1366 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1367 sizeof(sband->ht_cap.mcs), 1368 &sband->ht_cap.mcs) || 1369 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1370 sband->ht_cap.cap) || 1371 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1372 sband->ht_cap.ampdu_factor) || 1373 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1374 sband->ht_cap.ampdu_density))) 1375 return -ENOBUFS; 1376 1377 /* add VHT info */ 1378 if (sband->vht_cap.vht_supported && 1379 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1380 sizeof(sband->vht_cap.vht_mcs), 1381 &sband->vht_cap.vht_mcs) || 1382 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1383 sband->vht_cap.cap))) 1384 return -ENOBUFS; 1385 1386 if (sband->n_iftype_data) { 1387 struct nlattr *nl_iftype_data = 1388 nla_nest_start(msg, NL80211_BAND_ATTR_IFTYPE_DATA); 1389 int err; 1390 1391 if (!nl_iftype_data) 1392 return -ENOBUFS; 1393 1394 for (i = 0; i < sband->n_iftype_data; i++) { 1395 struct nlattr *iftdata; 1396 1397 iftdata = nla_nest_start(msg, i + 1); 1398 if (!iftdata) 1399 return -ENOBUFS; 1400 1401 err = nl80211_send_iftype_data(msg, 1402 &sband->iftype_data[i]); 1403 if (err) 1404 return err; 1405 1406 nla_nest_end(msg, iftdata); 1407 } 1408 1409 nla_nest_end(msg, nl_iftype_data); 1410 } 1411 1412 /* add bitrates */ 1413 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1414 if (!nl_rates) 1415 return -ENOBUFS; 1416 1417 for (i = 0; i < sband->n_bitrates; i++) { 1418 nl_rate = nla_nest_start(msg, i); 1419 if (!nl_rate) 1420 return -ENOBUFS; 1421 1422 rate = &sband->bitrates[i]; 1423 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1424 rate->bitrate)) 1425 return -ENOBUFS; 1426 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1427 nla_put_flag(msg, 1428 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1429 return -ENOBUFS; 1430 1431 nla_nest_end(msg, nl_rate); 1432 } 1433 1434 nla_nest_end(msg, nl_rates); 1435 1436 return 0; 1437 } 1438 1439 static int 1440 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1441 const struct ieee80211_txrx_stypes *mgmt_stypes) 1442 { 1443 u16 stypes; 1444 struct nlattr *nl_ftypes, *nl_ifs; 1445 enum nl80211_iftype ift; 1446 int i; 1447 1448 if (!mgmt_stypes) 1449 return 0; 1450 1451 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1452 if (!nl_ifs) 1453 return -ENOBUFS; 1454 1455 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1456 nl_ftypes = nla_nest_start(msg, ift); 1457 if (!nl_ftypes) 1458 return -ENOBUFS; 1459 i = 0; 1460 stypes = mgmt_stypes[ift].tx; 1461 while (stypes) { 1462 if ((stypes & 1) && 1463 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1464 (i << 4) | IEEE80211_FTYPE_MGMT)) 1465 return -ENOBUFS; 1466 stypes >>= 1; 1467 i++; 1468 } 1469 nla_nest_end(msg, nl_ftypes); 1470 } 1471 1472 nla_nest_end(msg, nl_ifs); 1473 1474 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1475 if (!nl_ifs) 1476 return -ENOBUFS; 1477 1478 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1479 nl_ftypes = nla_nest_start(msg, ift); 1480 if (!nl_ftypes) 1481 return -ENOBUFS; 1482 i = 0; 1483 stypes = mgmt_stypes[ift].rx; 1484 while (stypes) { 1485 if ((stypes & 1) && 1486 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1487 (i << 4) | IEEE80211_FTYPE_MGMT)) 1488 return -ENOBUFS; 1489 stypes >>= 1; 1490 i++; 1491 } 1492 nla_nest_end(msg, nl_ftypes); 1493 } 1494 nla_nest_end(msg, nl_ifs); 1495 1496 return 0; 1497 } 1498 1499 #define CMD(op, n) \ 1500 do { \ 1501 if (rdev->ops->op) { \ 1502 i++; \ 1503 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1504 goto nla_put_failure; \ 1505 } \ 1506 } while (0) 1507 1508 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 1509 struct sk_buff *msg) 1510 { 1511 int i = 0; 1512 1513 /* 1514 * do *NOT* add anything into this function, new things need to be 1515 * advertised only to new versions of userspace that can deal with 1516 * the split (and they can't possibly care about new features... 1517 */ 1518 CMD(add_virtual_intf, NEW_INTERFACE); 1519 CMD(change_virtual_intf, SET_INTERFACE); 1520 CMD(add_key, NEW_KEY); 1521 CMD(start_ap, START_AP); 1522 CMD(add_station, NEW_STATION); 1523 CMD(add_mpath, NEW_MPATH); 1524 CMD(update_mesh_config, SET_MESH_CONFIG); 1525 CMD(change_bss, SET_BSS); 1526 CMD(auth, AUTHENTICATE); 1527 CMD(assoc, ASSOCIATE); 1528 CMD(deauth, DEAUTHENTICATE); 1529 CMD(disassoc, DISASSOCIATE); 1530 CMD(join_ibss, JOIN_IBSS); 1531 CMD(join_mesh, JOIN_MESH); 1532 CMD(set_pmksa, SET_PMKSA); 1533 CMD(del_pmksa, DEL_PMKSA); 1534 CMD(flush_pmksa, FLUSH_PMKSA); 1535 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1536 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1537 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1538 CMD(mgmt_tx, FRAME); 1539 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1540 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1541 i++; 1542 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1543 goto nla_put_failure; 1544 } 1545 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1546 rdev->ops->join_mesh) { 1547 i++; 1548 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1549 goto nla_put_failure; 1550 } 1551 CMD(set_wds_peer, SET_WDS_PEER); 1552 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1553 CMD(tdls_mgmt, TDLS_MGMT); 1554 CMD(tdls_oper, TDLS_OPER); 1555 } 1556 if (rdev->wiphy.max_sched_scan_reqs) 1557 CMD(sched_scan_start, START_SCHED_SCAN); 1558 CMD(probe_client, PROBE_CLIENT); 1559 CMD(set_noack_map, SET_NOACK_MAP); 1560 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1561 i++; 1562 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1563 goto nla_put_failure; 1564 } 1565 CMD(start_p2p_device, START_P2P_DEVICE); 1566 CMD(set_mcast_rate, SET_MCAST_RATE); 1567 #ifdef CONFIG_NL80211_TESTMODE 1568 CMD(testmode_cmd, TESTMODE); 1569 #endif 1570 1571 if (rdev->ops->connect || rdev->ops->auth) { 1572 i++; 1573 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1574 goto nla_put_failure; 1575 } 1576 1577 if (rdev->ops->disconnect || rdev->ops->deauth) { 1578 i++; 1579 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1580 goto nla_put_failure; 1581 } 1582 1583 return i; 1584 nla_put_failure: 1585 return -ENOBUFS; 1586 } 1587 1588 struct nl80211_dump_wiphy_state { 1589 s64 filter_wiphy; 1590 long start; 1591 long split_start, band_start, chan_start, capa_start; 1592 bool split; 1593 }; 1594 1595 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1596 enum nl80211_commands cmd, 1597 struct sk_buff *msg, u32 portid, u32 seq, 1598 int flags, struct nl80211_dump_wiphy_state *state) 1599 { 1600 void *hdr; 1601 struct nlattr *nl_bands, *nl_band; 1602 struct nlattr *nl_freqs, *nl_freq; 1603 struct nlattr *nl_cmds; 1604 enum nl80211_band band; 1605 struct ieee80211_channel *chan; 1606 int i; 1607 const struct ieee80211_txrx_stypes *mgmt_stypes = 1608 rdev->wiphy.mgmt_stypes; 1609 u32 features; 1610 1611 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1612 if (!hdr) 1613 return -ENOBUFS; 1614 1615 if (WARN_ON(!state)) 1616 return -EINVAL; 1617 1618 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1619 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1620 wiphy_name(&rdev->wiphy)) || 1621 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1622 cfg80211_rdev_list_generation)) 1623 goto nla_put_failure; 1624 1625 if (cmd != NL80211_CMD_NEW_WIPHY) 1626 goto finish; 1627 1628 switch (state->split_start) { 1629 case 0: 1630 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1631 rdev->wiphy.retry_short) || 1632 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1633 rdev->wiphy.retry_long) || 1634 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1635 rdev->wiphy.frag_threshold) || 1636 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1637 rdev->wiphy.rts_threshold) || 1638 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1639 rdev->wiphy.coverage_class) || 1640 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1641 rdev->wiphy.max_scan_ssids) || 1642 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1643 rdev->wiphy.max_sched_scan_ssids) || 1644 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1645 rdev->wiphy.max_scan_ie_len) || 1646 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1647 rdev->wiphy.max_sched_scan_ie_len) || 1648 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1649 rdev->wiphy.max_match_sets) || 1650 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1651 rdev->wiphy.max_sched_scan_plans) || 1652 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1653 rdev->wiphy.max_sched_scan_plan_interval) || 1654 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1655 rdev->wiphy.max_sched_scan_plan_iterations)) 1656 goto nla_put_failure; 1657 1658 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1659 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1660 goto nla_put_failure; 1661 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1662 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1663 goto nla_put_failure; 1664 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1665 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1666 goto nla_put_failure; 1667 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1668 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1669 goto nla_put_failure; 1670 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1671 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1672 goto nla_put_failure; 1673 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1674 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1675 goto nla_put_failure; 1676 state->split_start++; 1677 if (state->split) 1678 break; 1679 case 1: 1680 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1681 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1682 rdev->wiphy.cipher_suites)) 1683 goto nla_put_failure; 1684 1685 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1686 rdev->wiphy.max_num_pmkids)) 1687 goto nla_put_failure; 1688 1689 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1690 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1691 goto nla_put_failure; 1692 1693 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1694 rdev->wiphy.available_antennas_tx) || 1695 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1696 rdev->wiphy.available_antennas_rx)) 1697 goto nla_put_failure; 1698 1699 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1700 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1701 rdev->wiphy.probe_resp_offload)) 1702 goto nla_put_failure; 1703 1704 if ((rdev->wiphy.available_antennas_tx || 1705 rdev->wiphy.available_antennas_rx) && 1706 rdev->ops->get_antenna) { 1707 u32 tx_ant = 0, rx_ant = 0; 1708 int res; 1709 1710 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1711 if (!res) { 1712 if (nla_put_u32(msg, 1713 NL80211_ATTR_WIPHY_ANTENNA_TX, 1714 tx_ant) || 1715 nla_put_u32(msg, 1716 NL80211_ATTR_WIPHY_ANTENNA_RX, 1717 rx_ant)) 1718 goto nla_put_failure; 1719 } 1720 } 1721 1722 state->split_start++; 1723 if (state->split) 1724 break; 1725 case 2: 1726 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1727 rdev->wiphy.interface_modes)) 1728 goto nla_put_failure; 1729 state->split_start++; 1730 if (state->split) 1731 break; 1732 case 3: 1733 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1734 if (!nl_bands) 1735 goto nla_put_failure; 1736 1737 for (band = state->band_start; 1738 band < NUM_NL80211_BANDS; band++) { 1739 struct ieee80211_supported_band *sband; 1740 1741 sband = rdev->wiphy.bands[band]; 1742 1743 if (!sband) 1744 continue; 1745 1746 nl_band = nla_nest_start(msg, band); 1747 if (!nl_band) 1748 goto nla_put_failure; 1749 1750 switch (state->chan_start) { 1751 case 0: 1752 if (nl80211_send_band_rateinfo(msg, sband)) 1753 goto nla_put_failure; 1754 state->chan_start++; 1755 if (state->split) 1756 break; 1757 default: 1758 /* add frequencies */ 1759 nl_freqs = nla_nest_start( 1760 msg, NL80211_BAND_ATTR_FREQS); 1761 if (!nl_freqs) 1762 goto nla_put_failure; 1763 1764 for (i = state->chan_start - 1; 1765 i < sband->n_channels; 1766 i++) { 1767 nl_freq = nla_nest_start(msg, i); 1768 if (!nl_freq) 1769 goto nla_put_failure; 1770 1771 chan = &sband->channels[i]; 1772 1773 if (nl80211_msg_put_channel( 1774 msg, &rdev->wiphy, chan, 1775 state->split)) 1776 goto nla_put_failure; 1777 1778 nla_nest_end(msg, nl_freq); 1779 if (state->split) 1780 break; 1781 } 1782 if (i < sband->n_channels) 1783 state->chan_start = i + 2; 1784 else 1785 state->chan_start = 0; 1786 nla_nest_end(msg, nl_freqs); 1787 } 1788 1789 nla_nest_end(msg, nl_band); 1790 1791 if (state->split) { 1792 /* start again here */ 1793 if (state->chan_start) 1794 band--; 1795 break; 1796 } 1797 } 1798 nla_nest_end(msg, nl_bands); 1799 1800 if (band < NUM_NL80211_BANDS) 1801 state->band_start = band + 1; 1802 else 1803 state->band_start = 0; 1804 1805 /* if bands & channels are done, continue outside */ 1806 if (state->band_start == 0 && state->chan_start == 0) 1807 state->split_start++; 1808 if (state->split) 1809 break; 1810 case 4: 1811 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1812 if (!nl_cmds) 1813 goto nla_put_failure; 1814 1815 i = nl80211_add_commands_unsplit(rdev, msg); 1816 if (i < 0) 1817 goto nla_put_failure; 1818 if (state->split) { 1819 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1820 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1821 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1822 CMD(channel_switch, CHANNEL_SWITCH); 1823 CMD(set_qos_map, SET_QOS_MAP); 1824 if (rdev->wiphy.features & 1825 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1826 CMD(add_tx_ts, ADD_TX_TS); 1827 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 1828 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 1829 } 1830 #undef CMD 1831 1832 nla_nest_end(msg, nl_cmds); 1833 state->split_start++; 1834 if (state->split) 1835 break; 1836 case 5: 1837 if (rdev->ops->remain_on_channel && 1838 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1839 nla_put_u32(msg, 1840 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1841 rdev->wiphy.max_remain_on_channel_duration)) 1842 goto nla_put_failure; 1843 1844 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1845 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1846 goto nla_put_failure; 1847 1848 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1849 goto nla_put_failure; 1850 state->split_start++; 1851 if (state->split) 1852 break; 1853 case 6: 1854 #ifdef CONFIG_PM 1855 if (nl80211_send_wowlan(msg, rdev, state->split)) 1856 goto nla_put_failure; 1857 state->split_start++; 1858 if (state->split) 1859 break; 1860 #else 1861 state->split_start++; 1862 #endif 1863 case 7: 1864 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1865 rdev->wiphy.software_iftypes)) 1866 goto nla_put_failure; 1867 1868 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1869 state->split)) 1870 goto nla_put_failure; 1871 1872 state->split_start++; 1873 if (state->split) 1874 break; 1875 case 8: 1876 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1877 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1878 rdev->wiphy.ap_sme_capa)) 1879 goto nla_put_failure; 1880 1881 features = rdev->wiphy.features; 1882 /* 1883 * We can only add the per-channel limit information if the 1884 * dump is split, otherwise it makes it too big. Therefore 1885 * only advertise it in that case. 1886 */ 1887 if (state->split) 1888 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1889 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1890 goto nla_put_failure; 1891 1892 if (rdev->wiphy.ht_capa_mod_mask && 1893 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1894 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1895 rdev->wiphy.ht_capa_mod_mask)) 1896 goto nla_put_failure; 1897 1898 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1899 rdev->wiphy.max_acl_mac_addrs && 1900 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1901 rdev->wiphy.max_acl_mac_addrs)) 1902 goto nla_put_failure; 1903 1904 /* 1905 * Any information below this point is only available to 1906 * applications that can deal with it being split. This 1907 * helps ensure that newly added capabilities don't break 1908 * older tools by overrunning their buffers. 1909 * 1910 * We still increment split_start so that in the split 1911 * case we'll continue with more data in the next round, 1912 * but break unconditionally so unsplit data stops here. 1913 */ 1914 state->split_start++; 1915 break; 1916 case 9: 1917 if (rdev->wiphy.extended_capabilities && 1918 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1919 rdev->wiphy.extended_capabilities_len, 1920 rdev->wiphy.extended_capabilities) || 1921 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1922 rdev->wiphy.extended_capabilities_len, 1923 rdev->wiphy.extended_capabilities_mask))) 1924 goto nla_put_failure; 1925 1926 if (rdev->wiphy.vht_capa_mod_mask && 1927 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1928 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1929 rdev->wiphy.vht_capa_mod_mask)) 1930 goto nla_put_failure; 1931 1932 state->split_start++; 1933 break; 1934 case 10: 1935 if (nl80211_send_coalesce(msg, rdev)) 1936 goto nla_put_failure; 1937 1938 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1939 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1940 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1941 goto nla_put_failure; 1942 1943 if (rdev->wiphy.max_ap_assoc_sta && 1944 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1945 rdev->wiphy.max_ap_assoc_sta)) 1946 goto nla_put_failure; 1947 1948 state->split_start++; 1949 break; 1950 case 11: 1951 if (rdev->wiphy.n_vendor_commands) { 1952 const struct nl80211_vendor_cmd_info *info; 1953 struct nlattr *nested; 1954 1955 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1956 if (!nested) 1957 goto nla_put_failure; 1958 1959 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1960 info = &rdev->wiphy.vendor_commands[i].info; 1961 if (nla_put(msg, i + 1, sizeof(*info), info)) 1962 goto nla_put_failure; 1963 } 1964 nla_nest_end(msg, nested); 1965 } 1966 1967 if (rdev->wiphy.n_vendor_events) { 1968 const struct nl80211_vendor_cmd_info *info; 1969 struct nlattr *nested; 1970 1971 nested = nla_nest_start(msg, 1972 NL80211_ATTR_VENDOR_EVENTS); 1973 if (!nested) 1974 goto nla_put_failure; 1975 1976 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1977 info = &rdev->wiphy.vendor_events[i]; 1978 if (nla_put(msg, i + 1, sizeof(*info), info)) 1979 goto nla_put_failure; 1980 } 1981 nla_nest_end(msg, nested); 1982 } 1983 state->split_start++; 1984 break; 1985 case 12: 1986 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1987 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1988 rdev->wiphy.max_num_csa_counters)) 1989 goto nla_put_failure; 1990 1991 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1992 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1993 goto nla_put_failure; 1994 1995 if (rdev->wiphy.max_sched_scan_reqs && 1996 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 1997 rdev->wiphy.max_sched_scan_reqs)) 1998 goto nla_put_failure; 1999 2000 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 2001 sizeof(rdev->wiphy.ext_features), 2002 rdev->wiphy.ext_features)) 2003 goto nla_put_failure; 2004 2005 if (rdev->wiphy.bss_select_support) { 2006 struct nlattr *nested; 2007 u32 bss_select_support = rdev->wiphy.bss_select_support; 2008 2009 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT); 2010 if (!nested) 2011 goto nla_put_failure; 2012 2013 i = 0; 2014 while (bss_select_support) { 2015 if ((bss_select_support & 1) && 2016 nla_put_flag(msg, i)) 2017 goto nla_put_failure; 2018 i++; 2019 bss_select_support >>= 1; 2020 } 2021 nla_nest_end(msg, nested); 2022 } 2023 2024 state->split_start++; 2025 break; 2026 case 13: 2027 if (rdev->wiphy.num_iftype_ext_capab && 2028 rdev->wiphy.iftype_ext_capab) { 2029 struct nlattr *nested_ext_capab, *nested; 2030 2031 nested = nla_nest_start(msg, 2032 NL80211_ATTR_IFTYPE_EXT_CAPA); 2033 if (!nested) 2034 goto nla_put_failure; 2035 2036 for (i = state->capa_start; 2037 i < rdev->wiphy.num_iftype_ext_capab; i++) { 2038 const struct wiphy_iftype_ext_capab *capab; 2039 2040 capab = &rdev->wiphy.iftype_ext_capab[i]; 2041 2042 nested_ext_capab = nla_nest_start(msg, i); 2043 if (!nested_ext_capab || 2044 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 2045 capab->iftype) || 2046 nla_put(msg, NL80211_ATTR_EXT_CAPA, 2047 capab->extended_capabilities_len, 2048 capab->extended_capabilities) || 2049 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 2050 capab->extended_capabilities_len, 2051 capab->extended_capabilities_mask)) 2052 goto nla_put_failure; 2053 2054 nla_nest_end(msg, nested_ext_capab); 2055 if (state->split) 2056 break; 2057 } 2058 nla_nest_end(msg, nested); 2059 if (i < rdev->wiphy.num_iftype_ext_capab) { 2060 state->capa_start = i + 1; 2061 break; 2062 } 2063 } 2064 2065 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 2066 rdev->wiphy.nan_supported_bands)) 2067 goto nla_put_failure; 2068 2069 if (wiphy_ext_feature_isset(&rdev->wiphy, 2070 NL80211_EXT_FEATURE_TXQS)) { 2071 struct cfg80211_txq_stats txqstats = {}; 2072 int res; 2073 2074 res = rdev_get_txq_stats(rdev, NULL, &txqstats); 2075 if (!res && 2076 !nl80211_put_txq_stats(msg, &txqstats, 2077 NL80211_ATTR_TXQ_STATS)) 2078 goto nla_put_failure; 2079 2080 if (nla_put_u32(msg, NL80211_ATTR_TXQ_LIMIT, 2081 rdev->wiphy.txq_limit)) 2082 goto nla_put_failure; 2083 if (nla_put_u32(msg, NL80211_ATTR_TXQ_MEMORY_LIMIT, 2084 rdev->wiphy.txq_memory_limit)) 2085 goto nla_put_failure; 2086 if (nla_put_u32(msg, NL80211_ATTR_TXQ_QUANTUM, 2087 rdev->wiphy.txq_quantum)) 2088 goto nla_put_failure; 2089 } 2090 2091 /* done */ 2092 state->split_start = 0; 2093 break; 2094 } 2095 finish: 2096 genlmsg_end(msg, hdr); 2097 return 0; 2098 2099 nla_put_failure: 2100 genlmsg_cancel(msg, hdr); 2101 return -EMSGSIZE; 2102 } 2103 2104 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 2105 struct netlink_callback *cb, 2106 struct nl80211_dump_wiphy_state *state) 2107 { 2108 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam); 2109 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb, 2110 nl80211_fam.maxattr, nl80211_policy, NULL); 2111 /* ignore parse errors for backward compatibility */ 2112 if (ret) 2113 return 0; 2114 2115 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 2116 if (tb[NL80211_ATTR_WIPHY]) 2117 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 2118 if (tb[NL80211_ATTR_WDEV]) 2119 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 2120 if (tb[NL80211_ATTR_IFINDEX]) { 2121 struct net_device *netdev; 2122 struct cfg80211_registered_device *rdev; 2123 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 2124 2125 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 2126 if (!netdev) 2127 return -ENODEV; 2128 if (netdev->ieee80211_ptr) { 2129 rdev = wiphy_to_rdev( 2130 netdev->ieee80211_ptr->wiphy); 2131 state->filter_wiphy = rdev->wiphy_idx; 2132 } 2133 } 2134 2135 return 0; 2136 } 2137 2138 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 2139 { 2140 int idx = 0, ret; 2141 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 2142 struct cfg80211_registered_device *rdev; 2143 2144 rtnl_lock(); 2145 if (!state) { 2146 state = kzalloc(sizeof(*state), GFP_KERNEL); 2147 if (!state) { 2148 rtnl_unlock(); 2149 return -ENOMEM; 2150 } 2151 state->filter_wiphy = -1; 2152 ret = nl80211_dump_wiphy_parse(skb, cb, state); 2153 if (ret) { 2154 kfree(state); 2155 rtnl_unlock(); 2156 return ret; 2157 } 2158 cb->args[0] = (long)state; 2159 } 2160 2161 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2162 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2163 continue; 2164 if (++idx <= state->start) 2165 continue; 2166 if (state->filter_wiphy != -1 && 2167 state->filter_wiphy != rdev->wiphy_idx) 2168 continue; 2169 /* attempt to fit multiple wiphy data chunks into the skb */ 2170 do { 2171 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 2172 skb, 2173 NETLINK_CB(cb->skb).portid, 2174 cb->nlh->nlmsg_seq, 2175 NLM_F_MULTI, state); 2176 if (ret < 0) { 2177 /* 2178 * If sending the wiphy data didn't fit (ENOBUFS 2179 * or EMSGSIZE returned), this SKB is still 2180 * empty (so it's not too big because another 2181 * wiphy dataset is already in the skb) and 2182 * we've not tried to adjust the dump allocation 2183 * yet ... then adjust the alloc size to be 2184 * bigger, and return 1 but with the empty skb. 2185 * This results in an empty message being RX'ed 2186 * in userspace, but that is ignored. 2187 * 2188 * We can then retry with the larger buffer. 2189 */ 2190 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 2191 !skb->len && !state->split && 2192 cb->min_dump_alloc < 4096) { 2193 cb->min_dump_alloc = 4096; 2194 state->split_start = 0; 2195 rtnl_unlock(); 2196 return 1; 2197 } 2198 idx--; 2199 break; 2200 } 2201 } while (state->split_start > 0); 2202 break; 2203 } 2204 rtnl_unlock(); 2205 2206 state->start = idx; 2207 2208 return skb->len; 2209 } 2210 2211 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 2212 { 2213 kfree((void *)cb->args[0]); 2214 return 0; 2215 } 2216 2217 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 2218 { 2219 struct sk_buff *msg; 2220 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2221 struct nl80211_dump_wiphy_state state = {}; 2222 2223 msg = nlmsg_new(4096, GFP_KERNEL); 2224 if (!msg) 2225 return -ENOMEM; 2226 2227 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 2228 info->snd_portid, info->snd_seq, 0, 2229 &state) < 0) { 2230 nlmsg_free(msg); 2231 return -ENOBUFS; 2232 } 2233 2234 return genlmsg_reply(msg, info); 2235 } 2236 2237 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 2238 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 2239 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 2240 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 2241 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 2242 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 2243 }; 2244 2245 static int parse_txq_params(struct nlattr *tb[], 2246 struct ieee80211_txq_params *txq_params) 2247 { 2248 u8 ac; 2249 2250 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 2251 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 2252 !tb[NL80211_TXQ_ATTR_AIFS]) 2253 return -EINVAL; 2254 2255 ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 2256 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 2257 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 2258 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 2259 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 2260 2261 if (ac >= NL80211_NUM_ACS) 2262 return -EINVAL; 2263 txq_params->ac = array_index_nospec(ac, NL80211_NUM_ACS); 2264 return 0; 2265 } 2266 2267 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 2268 { 2269 /* 2270 * You can only set the channel explicitly for WDS interfaces, 2271 * all others have their channel managed via their respective 2272 * "establish a connection" command (connect, join, ...) 2273 * 2274 * For AP/GO and mesh mode, the channel can be set with the 2275 * channel userspace API, but is only stored and passed to the 2276 * low-level driver when the AP starts or the mesh is joined. 2277 * This is for backward compatibility, userspace can also give 2278 * the channel in the start-ap or join-mesh commands instead. 2279 * 2280 * Monitors are special as they are normally slaved to 2281 * whatever else is going on, so they have their own special 2282 * operation to set the monitor channel if possible. 2283 */ 2284 return !wdev || 2285 wdev->iftype == NL80211_IFTYPE_AP || 2286 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2287 wdev->iftype == NL80211_IFTYPE_MONITOR || 2288 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2289 } 2290 2291 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2292 struct genl_info *info, 2293 struct cfg80211_chan_def *chandef) 2294 { 2295 u32 control_freq; 2296 2297 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 2298 return -EINVAL; 2299 2300 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 2301 2302 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 2303 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2304 chandef->center_freq1 = control_freq; 2305 chandef->center_freq2 = 0; 2306 2307 /* Primary channel not allowed */ 2308 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 2309 return -EINVAL; 2310 2311 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2312 enum nl80211_channel_type chantype; 2313 2314 chantype = nla_get_u32( 2315 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2316 2317 switch (chantype) { 2318 case NL80211_CHAN_NO_HT: 2319 case NL80211_CHAN_HT20: 2320 case NL80211_CHAN_HT40PLUS: 2321 case NL80211_CHAN_HT40MINUS: 2322 cfg80211_chandef_create(chandef, chandef->chan, 2323 chantype); 2324 /* user input for center_freq is incorrect */ 2325 if (info->attrs[NL80211_ATTR_CENTER_FREQ1] && 2326 chandef->center_freq1 != nla_get_u32( 2327 info->attrs[NL80211_ATTR_CENTER_FREQ1])) 2328 return -EINVAL; 2329 /* center_freq2 must be zero */ 2330 if (info->attrs[NL80211_ATTR_CENTER_FREQ2] && 2331 nla_get_u32(info->attrs[NL80211_ATTR_CENTER_FREQ2])) 2332 return -EINVAL; 2333 break; 2334 default: 2335 return -EINVAL; 2336 } 2337 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2338 chandef->width = 2339 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2340 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 2341 chandef->center_freq1 = 2342 nla_get_u32( 2343 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 2344 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 2345 chandef->center_freq2 = 2346 nla_get_u32( 2347 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 2348 } 2349 2350 if (!cfg80211_chandef_valid(chandef)) 2351 return -EINVAL; 2352 2353 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2354 IEEE80211_CHAN_DISABLED)) 2355 return -EINVAL; 2356 2357 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2358 chandef->width == NL80211_CHAN_WIDTH_10) && 2359 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 2360 return -EINVAL; 2361 2362 return 0; 2363 } 2364 2365 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 2366 struct net_device *dev, 2367 struct genl_info *info) 2368 { 2369 struct cfg80211_chan_def chandef; 2370 int result; 2371 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2372 struct wireless_dev *wdev = NULL; 2373 2374 if (dev) 2375 wdev = dev->ieee80211_ptr; 2376 if (!nl80211_can_set_dev_channel(wdev)) 2377 return -EOPNOTSUPP; 2378 if (wdev) 2379 iftype = wdev->iftype; 2380 2381 result = nl80211_parse_chandef(rdev, info, &chandef); 2382 if (result) 2383 return result; 2384 2385 switch (iftype) { 2386 case NL80211_IFTYPE_AP: 2387 case NL80211_IFTYPE_P2P_GO: 2388 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2389 iftype)) { 2390 result = -EINVAL; 2391 break; 2392 } 2393 if (wdev->beacon_interval) { 2394 if (!dev || !rdev->ops->set_ap_chanwidth || 2395 !(rdev->wiphy.features & 2396 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2397 result = -EBUSY; 2398 break; 2399 } 2400 2401 /* Only allow dynamic channel width changes */ 2402 if (chandef.chan != wdev->preset_chandef.chan) { 2403 result = -EBUSY; 2404 break; 2405 } 2406 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2407 if (result) 2408 break; 2409 } 2410 wdev->preset_chandef = chandef; 2411 result = 0; 2412 break; 2413 case NL80211_IFTYPE_MESH_POINT: 2414 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2415 break; 2416 case NL80211_IFTYPE_MONITOR: 2417 result = cfg80211_set_monitor_channel(rdev, &chandef); 2418 break; 2419 default: 2420 result = -EINVAL; 2421 } 2422 2423 return result; 2424 } 2425 2426 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2427 { 2428 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2429 struct net_device *netdev = info->user_ptr[1]; 2430 2431 return __nl80211_set_channel(rdev, netdev, info); 2432 } 2433 2434 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2435 { 2436 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2437 struct net_device *dev = info->user_ptr[1]; 2438 struct wireless_dev *wdev = dev->ieee80211_ptr; 2439 const u8 *bssid; 2440 2441 if (!info->attrs[NL80211_ATTR_MAC]) 2442 return -EINVAL; 2443 2444 if (netif_running(dev)) 2445 return -EBUSY; 2446 2447 if (!rdev->ops->set_wds_peer) 2448 return -EOPNOTSUPP; 2449 2450 if (wdev->iftype != NL80211_IFTYPE_WDS) 2451 return -EOPNOTSUPP; 2452 2453 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2454 return rdev_set_wds_peer(rdev, dev, bssid); 2455 } 2456 2457 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2458 { 2459 struct cfg80211_registered_device *rdev; 2460 struct net_device *netdev = NULL; 2461 struct wireless_dev *wdev; 2462 int result = 0, rem_txq_params = 0; 2463 struct nlattr *nl_txq_params; 2464 u32 changed; 2465 u8 retry_short = 0, retry_long = 0; 2466 u32 frag_threshold = 0, rts_threshold = 0; 2467 u8 coverage_class = 0; 2468 u32 txq_limit = 0, txq_memory_limit = 0, txq_quantum = 0; 2469 2470 ASSERT_RTNL(); 2471 2472 /* 2473 * Try to find the wiphy and netdev. Normally this 2474 * function shouldn't need the netdev, but this is 2475 * done for backward compatibility -- previously 2476 * setting the channel was done per wiphy, but now 2477 * it is per netdev. Previous userland like hostapd 2478 * also passed a netdev to set_wiphy, so that it is 2479 * possible to let that go to the right netdev! 2480 */ 2481 2482 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2483 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2484 2485 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2486 if (netdev && netdev->ieee80211_ptr) 2487 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2488 else 2489 netdev = NULL; 2490 } 2491 2492 if (!netdev) { 2493 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2494 info->attrs); 2495 if (IS_ERR(rdev)) 2496 return PTR_ERR(rdev); 2497 wdev = NULL; 2498 netdev = NULL; 2499 result = 0; 2500 } else 2501 wdev = netdev->ieee80211_ptr; 2502 2503 /* 2504 * end workaround code, by now the rdev is available 2505 * and locked, and wdev may or may not be NULL. 2506 */ 2507 2508 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2509 result = cfg80211_dev_rename( 2510 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2511 2512 if (result) 2513 return result; 2514 2515 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2516 struct ieee80211_txq_params txq_params; 2517 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2518 2519 if (!rdev->ops->set_txq_params) 2520 return -EOPNOTSUPP; 2521 2522 if (!netdev) 2523 return -EINVAL; 2524 2525 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2526 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2527 return -EINVAL; 2528 2529 if (!netif_running(netdev)) 2530 return -ENETDOWN; 2531 2532 nla_for_each_nested(nl_txq_params, 2533 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2534 rem_txq_params) { 2535 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX, 2536 nl_txq_params, 2537 txq_params_policy, 2538 info->extack); 2539 if (result) 2540 return result; 2541 result = parse_txq_params(tb, &txq_params); 2542 if (result) 2543 return result; 2544 2545 result = rdev_set_txq_params(rdev, netdev, 2546 &txq_params); 2547 if (result) 2548 return result; 2549 } 2550 } 2551 2552 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2553 result = __nl80211_set_channel( 2554 rdev, 2555 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2556 info); 2557 if (result) 2558 return result; 2559 } 2560 2561 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2562 struct wireless_dev *txp_wdev = wdev; 2563 enum nl80211_tx_power_setting type; 2564 int idx, mbm = 0; 2565 2566 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2567 txp_wdev = NULL; 2568 2569 if (!rdev->ops->set_tx_power) 2570 return -EOPNOTSUPP; 2571 2572 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2573 type = nla_get_u32(info->attrs[idx]); 2574 2575 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2576 (type != NL80211_TX_POWER_AUTOMATIC)) 2577 return -EINVAL; 2578 2579 if (type != NL80211_TX_POWER_AUTOMATIC) { 2580 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2581 mbm = nla_get_u32(info->attrs[idx]); 2582 } 2583 2584 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2585 if (result) 2586 return result; 2587 } 2588 2589 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2590 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2591 u32 tx_ant, rx_ant; 2592 2593 if ((!rdev->wiphy.available_antennas_tx && 2594 !rdev->wiphy.available_antennas_rx) || 2595 !rdev->ops->set_antenna) 2596 return -EOPNOTSUPP; 2597 2598 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2599 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2600 2601 /* reject antenna configurations which don't match the 2602 * available antenna masks, except for the "all" mask */ 2603 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2604 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2605 return -EINVAL; 2606 2607 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2608 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2609 2610 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2611 if (result) 2612 return result; 2613 } 2614 2615 changed = 0; 2616 2617 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2618 retry_short = nla_get_u8( 2619 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2620 if (retry_short == 0) 2621 return -EINVAL; 2622 2623 changed |= WIPHY_PARAM_RETRY_SHORT; 2624 } 2625 2626 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2627 retry_long = nla_get_u8( 2628 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2629 if (retry_long == 0) 2630 return -EINVAL; 2631 2632 changed |= WIPHY_PARAM_RETRY_LONG; 2633 } 2634 2635 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2636 frag_threshold = nla_get_u32( 2637 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2638 if (frag_threshold < 256) 2639 return -EINVAL; 2640 2641 if (frag_threshold != (u32) -1) { 2642 /* 2643 * Fragments (apart from the last one) are required to 2644 * have even length. Make the fragmentation code 2645 * simpler by stripping LSB should someone try to use 2646 * odd threshold value. 2647 */ 2648 frag_threshold &= ~0x1; 2649 } 2650 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2651 } 2652 2653 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2654 rts_threshold = nla_get_u32( 2655 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2656 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2657 } 2658 2659 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2660 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2661 return -EINVAL; 2662 2663 coverage_class = nla_get_u8( 2664 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2665 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2666 } 2667 2668 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2669 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2670 return -EOPNOTSUPP; 2671 2672 changed |= WIPHY_PARAM_DYN_ACK; 2673 } 2674 2675 if (info->attrs[NL80211_ATTR_TXQ_LIMIT]) { 2676 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2677 NL80211_EXT_FEATURE_TXQS)) 2678 return -EOPNOTSUPP; 2679 txq_limit = nla_get_u32( 2680 info->attrs[NL80211_ATTR_TXQ_LIMIT]); 2681 changed |= WIPHY_PARAM_TXQ_LIMIT; 2682 } 2683 2684 if (info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]) { 2685 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2686 NL80211_EXT_FEATURE_TXQS)) 2687 return -EOPNOTSUPP; 2688 txq_memory_limit = nla_get_u32( 2689 info->attrs[NL80211_ATTR_TXQ_MEMORY_LIMIT]); 2690 changed |= WIPHY_PARAM_TXQ_MEMORY_LIMIT; 2691 } 2692 2693 if (info->attrs[NL80211_ATTR_TXQ_QUANTUM]) { 2694 if (!wiphy_ext_feature_isset(&rdev->wiphy, 2695 NL80211_EXT_FEATURE_TXQS)) 2696 return -EOPNOTSUPP; 2697 txq_quantum = nla_get_u32( 2698 info->attrs[NL80211_ATTR_TXQ_QUANTUM]); 2699 changed |= WIPHY_PARAM_TXQ_QUANTUM; 2700 } 2701 2702 if (changed) { 2703 u8 old_retry_short, old_retry_long; 2704 u32 old_frag_threshold, old_rts_threshold; 2705 u8 old_coverage_class; 2706 u32 old_txq_limit, old_txq_memory_limit, old_txq_quantum; 2707 2708 if (!rdev->ops->set_wiphy_params) 2709 return -EOPNOTSUPP; 2710 2711 old_retry_short = rdev->wiphy.retry_short; 2712 old_retry_long = rdev->wiphy.retry_long; 2713 old_frag_threshold = rdev->wiphy.frag_threshold; 2714 old_rts_threshold = rdev->wiphy.rts_threshold; 2715 old_coverage_class = rdev->wiphy.coverage_class; 2716 old_txq_limit = rdev->wiphy.txq_limit; 2717 old_txq_memory_limit = rdev->wiphy.txq_memory_limit; 2718 old_txq_quantum = rdev->wiphy.txq_quantum; 2719 2720 if (changed & WIPHY_PARAM_RETRY_SHORT) 2721 rdev->wiphy.retry_short = retry_short; 2722 if (changed & WIPHY_PARAM_RETRY_LONG) 2723 rdev->wiphy.retry_long = retry_long; 2724 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2725 rdev->wiphy.frag_threshold = frag_threshold; 2726 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2727 rdev->wiphy.rts_threshold = rts_threshold; 2728 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2729 rdev->wiphy.coverage_class = coverage_class; 2730 if (changed & WIPHY_PARAM_TXQ_LIMIT) 2731 rdev->wiphy.txq_limit = txq_limit; 2732 if (changed & WIPHY_PARAM_TXQ_MEMORY_LIMIT) 2733 rdev->wiphy.txq_memory_limit = txq_memory_limit; 2734 if (changed & WIPHY_PARAM_TXQ_QUANTUM) 2735 rdev->wiphy.txq_quantum = txq_quantum; 2736 2737 result = rdev_set_wiphy_params(rdev, changed); 2738 if (result) { 2739 rdev->wiphy.retry_short = old_retry_short; 2740 rdev->wiphy.retry_long = old_retry_long; 2741 rdev->wiphy.frag_threshold = old_frag_threshold; 2742 rdev->wiphy.rts_threshold = old_rts_threshold; 2743 rdev->wiphy.coverage_class = old_coverage_class; 2744 rdev->wiphy.txq_limit = old_txq_limit; 2745 rdev->wiphy.txq_memory_limit = old_txq_memory_limit; 2746 rdev->wiphy.txq_quantum = old_txq_quantum; 2747 return result; 2748 } 2749 } 2750 return 0; 2751 } 2752 2753 static inline u64 wdev_id(struct wireless_dev *wdev) 2754 { 2755 return (u64)wdev->identifier | 2756 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2757 } 2758 2759 static int nl80211_send_chandef(struct sk_buff *msg, 2760 const struct cfg80211_chan_def *chandef) 2761 { 2762 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2763 return -EINVAL; 2764 2765 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2766 chandef->chan->center_freq)) 2767 return -ENOBUFS; 2768 switch (chandef->width) { 2769 case NL80211_CHAN_WIDTH_20_NOHT: 2770 case NL80211_CHAN_WIDTH_20: 2771 case NL80211_CHAN_WIDTH_40: 2772 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2773 cfg80211_get_chandef_type(chandef))) 2774 return -ENOBUFS; 2775 break; 2776 default: 2777 break; 2778 } 2779 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2780 return -ENOBUFS; 2781 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2782 return -ENOBUFS; 2783 if (chandef->center_freq2 && 2784 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2785 return -ENOBUFS; 2786 return 0; 2787 } 2788 2789 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2790 struct cfg80211_registered_device *rdev, 2791 struct wireless_dev *wdev, bool removal) 2792 { 2793 struct net_device *dev = wdev->netdev; 2794 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2795 void *hdr; 2796 2797 if (removal) 2798 cmd = NL80211_CMD_DEL_INTERFACE; 2799 2800 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2801 if (!hdr) 2802 return -1; 2803 2804 if (dev && 2805 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2806 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2807 goto nla_put_failure; 2808 2809 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2810 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2811 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 2812 NL80211_ATTR_PAD) || 2813 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2814 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2815 rdev->devlist_generation ^ 2816 (cfg80211_rdev_list_generation << 2)) || 2817 nla_put_u8(msg, NL80211_ATTR_4ADDR, wdev->use_4addr)) 2818 goto nla_put_failure; 2819 2820 if (rdev->ops->get_channel) { 2821 int ret; 2822 struct cfg80211_chan_def chandef; 2823 2824 ret = rdev_get_channel(rdev, wdev, &chandef); 2825 if (ret == 0) { 2826 if (nl80211_send_chandef(msg, &chandef)) 2827 goto nla_put_failure; 2828 } 2829 } 2830 2831 if (rdev->ops->get_tx_power) { 2832 int dbm, ret; 2833 2834 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2835 if (ret == 0 && 2836 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2837 DBM_TO_MBM(dbm))) 2838 goto nla_put_failure; 2839 } 2840 2841 wdev_lock(wdev); 2842 switch (wdev->iftype) { 2843 case NL80211_IFTYPE_AP: 2844 if (wdev->ssid_len && 2845 nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2846 goto nla_put_failure_locked; 2847 break; 2848 case NL80211_IFTYPE_STATION: 2849 case NL80211_IFTYPE_P2P_CLIENT: 2850 case NL80211_IFTYPE_ADHOC: { 2851 const u8 *ssid_ie; 2852 if (!wdev->current_bss) 2853 break; 2854 rcu_read_lock(); 2855 ssid_ie = ieee80211_bss_get_ie(&wdev->current_bss->pub, 2856 WLAN_EID_SSID); 2857 if (ssid_ie && 2858 nla_put(msg, NL80211_ATTR_SSID, ssid_ie[1], ssid_ie + 2)) 2859 goto nla_put_failure_rcu_locked; 2860 rcu_read_unlock(); 2861 break; 2862 } 2863 default: 2864 /* nothing */ 2865 break; 2866 } 2867 wdev_unlock(wdev); 2868 2869 if (rdev->ops->get_txq_stats) { 2870 struct cfg80211_txq_stats txqstats = {}; 2871 int ret = rdev_get_txq_stats(rdev, wdev, &txqstats); 2872 2873 if (ret == 0 && 2874 !nl80211_put_txq_stats(msg, &txqstats, 2875 NL80211_ATTR_TXQ_STATS)) 2876 goto nla_put_failure; 2877 } 2878 2879 genlmsg_end(msg, hdr); 2880 return 0; 2881 2882 nla_put_failure_rcu_locked: 2883 rcu_read_unlock(); 2884 nla_put_failure_locked: 2885 wdev_unlock(wdev); 2886 nla_put_failure: 2887 genlmsg_cancel(msg, hdr); 2888 return -EMSGSIZE; 2889 } 2890 2891 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2892 { 2893 int wp_idx = 0; 2894 int if_idx = 0; 2895 int wp_start = cb->args[0]; 2896 int if_start = cb->args[1]; 2897 int filter_wiphy = -1; 2898 struct cfg80211_registered_device *rdev; 2899 struct wireless_dev *wdev; 2900 int ret; 2901 2902 rtnl_lock(); 2903 if (!cb->args[2]) { 2904 struct nl80211_dump_wiphy_state state = { 2905 .filter_wiphy = -1, 2906 }; 2907 2908 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 2909 if (ret) 2910 goto out_unlock; 2911 2912 filter_wiphy = state.filter_wiphy; 2913 2914 /* 2915 * if filtering, set cb->args[2] to +1 since 0 is the default 2916 * value needed to determine that parsing is necessary. 2917 */ 2918 if (filter_wiphy >= 0) 2919 cb->args[2] = filter_wiphy + 1; 2920 else 2921 cb->args[2] = -1; 2922 } else if (cb->args[2] > 0) { 2923 filter_wiphy = cb->args[2] - 1; 2924 } 2925 2926 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2927 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2928 continue; 2929 if (wp_idx < wp_start) { 2930 wp_idx++; 2931 continue; 2932 } 2933 2934 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 2935 continue; 2936 2937 if_idx = 0; 2938 2939 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 2940 if (if_idx < if_start) { 2941 if_idx++; 2942 continue; 2943 } 2944 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2945 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2946 rdev, wdev, false) < 0) { 2947 goto out; 2948 } 2949 if_idx++; 2950 } 2951 2952 wp_idx++; 2953 } 2954 out: 2955 cb->args[0] = wp_idx; 2956 cb->args[1] = if_idx; 2957 2958 ret = skb->len; 2959 out_unlock: 2960 rtnl_unlock(); 2961 2962 return ret; 2963 } 2964 2965 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2966 { 2967 struct sk_buff *msg; 2968 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2969 struct wireless_dev *wdev = info->user_ptr[1]; 2970 2971 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2972 if (!msg) 2973 return -ENOMEM; 2974 2975 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2976 rdev, wdev, false) < 0) { 2977 nlmsg_free(msg); 2978 return -ENOBUFS; 2979 } 2980 2981 return genlmsg_reply(msg, info); 2982 } 2983 2984 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2985 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2986 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2987 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2988 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2989 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2990 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2991 }; 2992 2993 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2994 { 2995 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2996 int flag; 2997 2998 *mntrflags = 0; 2999 3000 if (!nla) 3001 return -EINVAL; 3002 3003 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla, 3004 mntr_flags_policy, NULL)) 3005 return -EINVAL; 3006 3007 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 3008 if (flags[flag]) 3009 *mntrflags |= (1<<flag); 3010 3011 *mntrflags |= MONITOR_FLAG_CHANGED; 3012 3013 return 0; 3014 } 3015 3016 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 3017 enum nl80211_iftype type, 3018 struct genl_info *info, 3019 struct vif_params *params) 3020 { 3021 bool change = false; 3022 int err; 3023 3024 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 3025 if (type != NL80211_IFTYPE_MONITOR) 3026 return -EINVAL; 3027 3028 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 3029 ¶ms->flags); 3030 if (err) 3031 return err; 3032 3033 change = true; 3034 } 3035 3036 if (params->flags & MONITOR_FLAG_ACTIVE && 3037 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 3038 return -EOPNOTSUPP; 3039 3040 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 3041 const u8 *mumimo_groups; 3042 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3043 3044 if (type != NL80211_IFTYPE_MONITOR) 3045 return -EINVAL; 3046 3047 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3048 return -EOPNOTSUPP; 3049 3050 mumimo_groups = 3051 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 3052 3053 /* bits 0 and 63 are reserved and must be zero */ 3054 if ((mumimo_groups[0] & BIT(0)) || 3055 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 3056 return -EINVAL; 3057 3058 params->vht_mumimo_groups = mumimo_groups; 3059 change = true; 3060 } 3061 3062 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 3063 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 3064 3065 if (type != NL80211_IFTYPE_MONITOR) 3066 return -EINVAL; 3067 3068 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 3069 return -EOPNOTSUPP; 3070 3071 params->vht_mumimo_follow_addr = 3072 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 3073 change = true; 3074 } 3075 3076 return change ? 1 : 0; 3077 } 3078 3079 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 3080 struct net_device *netdev, u8 use_4addr, 3081 enum nl80211_iftype iftype) 3082 { 3083 if (!use_4addr) { 3084 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 3085 return -EBUSY; 3086 return 0; 3087 } 3088 3089 switch (iftype) { 3090 case NL80211_IFTYPE_AP_VLAN: 3091 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 3092 return 0; 3093 break; 3094 case NL80211_IFTYPE_STATION: 3095 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 3096 return 0; 3097 break; 3098 default: 3099 break; 3100 } 3101 3102 return -EOPNOTSUPP; 3103 } 3104 3105 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 3106 { 3107 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3108 struct vif_params params; 3109 int err; 3110 enum nl80211_iftype otype, ntype; 3111 struct net_device *dev = info->user_ptr[1]; 3112 bool change = false; 3113 3114 memset(¶ms, 0, sizeof(params)); 3115 3116 otype = ntype = dev->ieee80211_ptr->iftype; 3117 3118 if (info->attrs[NL80211_ATTR_IFTYPE]) { 3119 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3120 if (otype != ntype) 3121 change = true; 3122 if (ntype > NL80211_IFTYPE_MAX) 3123 return -EINVAL; 3124 } 3125 3126 if (info->attrs[NL80211_ATTR_MESH_ID]) { 3127 struct wireless_dev *wdev = dev->ieee80211_ptr; 3128 3129 if (ntype != NL80211_IFTYPE_MESH_POINT) 3130 return -EINVAL; 3131 if (netif_running(dev)) 3132 return -EBUSY; 3133 3134 wdev_lock(wdev); 3135 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3136 IEEE80211_MAX_MESH_ID_LEN); 3137 wdev->mesh_id_up_len = 3138 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3139 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3140 wdev->mesh_id_up_len); 3141 wdev_unlock(wdev); 3142 } 3143 3144 if (info->attrs[NL80211_ATTR_4ADDR]) { 3145 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3146 change = true; 3147 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 3148 if (err) 3149 return err; 3150 } else { 3151 params.use_4addr = -1; 3152 } 3153 3154 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 3155 if (err < 0) 3156 return err; 3157 if (err > 0) 3158 change = true; 3159 3160 if (change) 3161 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 3162 else 3163 err = 0; 3164 3165 if (!err && params.use_4addr != -1) 3166 dev->ieee80211_ptr->use_4addr = params.use_4addr; 3167 3168 return err; 3169 } 3170 3171 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 3172 { 3173 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3174 struct vif_params params; 3175 struct wireless_dev *wdev; 3176 struct sk_buff *msg; 3177 int err; 3178 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 3179 3180 /* to avoid failing a new interface creation due to pending removal */ 3181 cfg80211_destroy_ifaces(rdev); 3182 3183 memset(¶ms, 0, sizeof(params)); 3184 3185 if (!info->attrs[NL80211_ATTR_IFNAME]) 3186 return -EINVAL; 3187 3188 if (info->attrs[NL80211_ATTR_IFTYPE]) { 3189 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 3190 if (type > NL80211_IFTYPE_MAX) 3191 return -EINVAL; 3192 } 3193 3194 if (!rdev->ops->add_virtual_intf || 3195 !(rdev->wiphy.interface_modes & (1 << type))) 3196 return -EOPNOTSUPP; 3197 3198 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 3199 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 3200 info->attrs[NL80211_ATTR_MAC]) { 3201 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 3202 ETH_ALEN); 3203 if (!is_valid_ether_addr(params.macaddr)) 3204 return -EADDRNOTAVAIL; 3205 } 3206 3207 if (info->attrs[NL80211_ATTR_4ADDR]) { 3208 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 3209 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 3210 if (err) 3211 return err; 3212 } 3213 3214 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 3215 if (err < 0) 3216 return err; 3217 3218 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3219 if (!msg) 3220 return -ENOMEM; 3221 3222 wdev = rdev_add_virtual_intf(rdev, 3223 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 3224 NET_NAME_USER, type, ¶ms); 3225 if (WARN_ON(!wdev)) { 3226 nlmsg_free(msg); 3227 return -EPROTO; 3228 } else if (IS_ERR(wdev)) { 3229 nlmsg_free(msg); 3230 return PTR_ERR(wdev); 3231 } 3232 3233 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 3234 wdev->owner_nlportid = info->snd_portid; 3235 3236 switch (type) { 3237 case NL80211_IFTYPE_MESH_POINT: 3238 if (!info->attrs[NL80211_ATTR_MESH_ID]) 3239 break; 3240 wdev_lock(wdev); 3241 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 3242 IEEE80211_MAX_MESH_ID_LEN); 3243 wdev->mesh_id_up_len = 3244 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 3245 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 3246 wdev->mesh_id_up_len); 3247 wdev_unlock(wdev); 3248 break; 3249 case NL80211_IFTYPE_NAN: 3250 case NL80211_IFTYPE_P2P_DEVICE: 3251 /* 3252 * P2P Device and NAN do not have a netdev, so don't go 3253 * through the netdev notifier and must be added here 3254 */ 3255 mutex_init(&wdev->mtx); 3256 INIT_LIST_HEAD(&wdev->event_list); 3257 spin_lock_init(&wdev->event_lock); 3258 INIT_LIST_HEAD(&wdev->mgmt_registrations); 3259 spin_lock_init(&wdev->mgmt_registrations_lock); 3260 3261 wdev->identifier = ++rdev->wdev_id; 3262 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); 3263 rdev->devlist_generation++; 3264 break; 3265 default: 3266 break; 3267 } 3268 3269 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 3270 rdev, wdev, false) < 0) { 3271 nlmsg_free(msg); 3272 return -ENOBUFS; 3273 } 3274 3275 /* 3276 * For wdevs which have no associated netdev object (e.g. of type 3277 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here. 3278 * For all other types, the event will be generated from the 3279 * netdev notifier 3280 */ 3281 if (!wdev->netdev) 3282 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); 3283 3284 return genlmsg_reply(msg, info); 3285 } 3286 3287 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 3288 { 3289 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3290 struct wireless_dev *wdev = info->user_ptr[1]; 3291 3292 if (!rdev->ops->del_virtual_intf) 3293 return -EOPNOTSUPP; 3294 3295 /* 3296 * If we remove a wireless device without a netdev then clear 3297 * user_ptr[1] so that nl80211_post_doit won't dereference it 3298 * to check if it needs to do dev_put(). Otherwise it crashes 3299 * since the wdev has been freed, unlike with a netdev where 3300 * we need the dev_put() for the netdev to really be freed. 3301 */ 3302 if (!wdev->netdev) 3303 info->user_ptr[1] = NULL; 3304 3305 return rdev_del_virtual_intf(rdev, wdev); 3306 } 3307 3308 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 3309 { 3310 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3311 struct net_device *dev = info->user_ptr[1]; 3312 u16 noack_map; 3313 3314 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 3315 return -EINVAL; 3316 3317 if (!rdev->ops->set_noack_map) 3318 return -EOPNOTSUPP; 3319 3320 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 3321 3322 return rdev_set_noack_map(rdev, dev, noack_map); 3323 } 3324 3325 struct get_key_cookie { 3326 struct sk_buff *msg; 3327 int error; 3328 int idx; 3329 }; 3330 3331 static void get_key_callback(void *c, struct key_params *params) 3332 { 3333 struct nlattr *key; 3334 struct get_key_cookie *cookie = c; 3335 3336 if ((params->key && 3337 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 3338 params->key_len, params->key)) || 3339 (params->seq && 3340 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 3341 params->seq_len, params->seq)) || 3342 (params->cipher && 3343 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 3344 params->cipher))) 3345 goto nla_put_failure; 3346 3347 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 3348 if (!key) 3349 goto nla_put_failure; 3350 3351 if ((params->key && 3352 nla_put(cookie->msg, NL80211_KEY_DATA, 3353 params->key_len, params->key)) || 3354 (params->seq && 3355 nla_put(cookie->msg, NL80211_KEY_SEQ, 3356 params->seq_len, params->seq)) || 3357 (params->cipher && 3358 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 3359 params->cipher))) 3360 goto nla_put_failure; 3361 3362 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 3363 goto nla_put_failure; 3364 3365 nla_nest_end(cookie->msg, key); 3366 3367 return; 3368 nla_put_failure: 3369 cookie->error = 1; 3370 } 3371 3372 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 3373 { 3374 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3375 int err; 3376 struct net_device *dev = info->user_ptr[1]; 3377 u8 key_idx = 0; 3378 const u8 *mac_addr = NULL; 3379 bool pairwise; 3380 struct get_key_cookie cookie = { 3381 .error = 0, 3382 }; 3383 void *hdr; 3384 struct sk_buff *msg; 3385 3386 if (info->attrs[NL80211_ATTR_KEY_IDX]) 3387 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 3388 3389 if (key_idx > 5) 3390 return -EINVAL; 3391 3392 if (info->attrs[NL80211_ATTR_MAC]) 3393 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3394 3395 pairwise = !!mac_addr; 3396 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 3397 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 3398 3399 if (kt >= NUM_NL80211_KEYTYPES) 3400 return -EINVAL; 3401 if (kt != NL80211_KEYTYPE_GROUP && 3402 kt != NL80211_KEYTYPE_PAIRWISE) 3403 return -EINVAL; 3404 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 3405 } 3406 3407 if (!rdev->ops->get_key) 3408 return -EOPNOTSUPP; 3409 3410 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3411 return -ENOENT; 3412 3413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3414 if (!msg) 3415 return -ENOMEM; 3416 3417 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 3418 NL80211_CMD_NEW_KEY); 3419 if (!hdr) 3420 goto nla_put_failure; 3421 3422 cookie.msg = msg; 3423 cookie.idx = key_idx; 3424 3425 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3426 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 3427 goto nla_put_failure; 3428 if (mac_addr && 3429 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 3430 goto nla_put_failure; 3431 3432 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 3433 get_key_callback); 3434 3435 if (err) 3436 goto free_msg; 3437 3438 if (cookie.error) 3439 goto nla_put_failure; 3440 3441 genlmsg_end(msg, hdr); 3442 return genlmsg_reply(msg, info); 3443 3444 nla_put_failure: 3445 err = -ENOBUFS; 3446 free_msg: 3447 nlmsg_free(msg); 3448 return err; 3449 } 3450 3451 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 3452 { 3453 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3454 struct key_parse key; 3455 int err; 3456 struct net_device *dev = info->user_ptr[1]; 3457 3458 err = nl80211_parse_key(info, &key); 3459 if (err) 3460 return err; 3461 3462 if (key.idx < 0) 3463 return -EINVAL; 3464 3465 /* only support setting default key */ 3466 if (!key.def && !key.defmgmt) 3467 return -EINVAL; 3468 3469 wdev_lock(dev->ieee80211_ptr); 3470 3471 if (key.def) { 3472 if (!rdev->ops->set_default_key) { 3473 err = -EOPNOTSUPP; 3474 goto out; 3475 } 3476 3477 err = nl80211_key_allowed(dev->ieee80211_ptr); 3478 if (err) 3479 goto out; 3480 3481 err = rdev_set_default_key(rdev, dev, key.idx, 3482 key.def_uni, key.def_multi); 3483 3484 if (err) 3485 goto out; 3486 3487 #ifdef CONFIG_CFG80211_WEXT 3488 dev->ieee80211_ptr->wext.default_key = key.idx; 3489 #endif 3490 } else { 3491 if (key.def_uni || !key.def_multi) { 3492 err = -EINVAL; 3493 goto out; 3494 } 3495 3496 if (!rdev->ops->set_default_mgmt_key) { 3497 err = -EOPNOTSUPP; 3498 goto out; 3499 } 3500 3501 err = nl80211_key_allowed(dev->ieee80211_ptr); 3502 if (err) 3503 goto out; 3504 3505 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 3506 if (err) 3507 goto out; 3508 3509 #ifdef CONFIG_CFG80211_WEXT 3510 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3511 #endif 3512 } 3513 3514 out: 3515 wdev_unlock(dev->ieee80211_ptr); 3516 3517 return err; 3518 } 3519 3520 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3521 { 3522 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3523 int err; 3524 struct net_device *dev = info->user_ptr[1]; 3525 struct key_parse key; 3526 const u8 *mac_addr = NULL; 3527 3528 err = nl80211_parse_key(info, &key); 3529 if (err) 3530 return err; 3531 3532 if (!key.p.key) 3533 return -EINVAL; 3534 3535 if (info->attrs[NL80211_ATTR_MAC]) 3536 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3537 3538 if (key.type == -1) { 3539 if (mac_addr) 3540 key.type = NL80211_KEYTYPE_PAIRWISE; 3541 else 3542 key.type = NL80211_KEYTYPE_GROUP; 3543 } 3544 3545 /* for now */ 3546 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3547 key.type != NL80211_KEYTYPE_GROUP) 3548 return -EINVAL; 3549 3550 if (!rdev->ops->add_key) 3551 return -EOPNOTSUPP; 3552 3553 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3554 key.type == NL80211_KEYTYPE_PAIRWISE, 3555 mac_addr)) 3556 return -EINVAL; 3557 3558 wdev_lock(dev->ieee80211_ptr); 3559 err = nl80211_key_allowed(dev->ieee80211_ptr); 3560 if (!err) 3561 err = rdev_add_key(rdev, dev, key.idx, 3562 key.type == NL80211_KEYTYPE_PAIRWISE, 3563 mac_addr, &key.p); 3564 wdev_unlock(dev->ieee80211_ptr); 3565 3566 return err; 3567 } 3568 3569 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3570 { 3571 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3572 int err; 3573 struct net_device *dev = info->user_ptr[1]; 3574 u8 *mac_addr = NULL; 3575 struct key_parse key; 3576 3577 err = nl80211_parse_key(info, &key); 3578 if (err) 3579 return err; 3580 3581 if (info->attrs[NL80211_ATTR_MAC]) 3582 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3583 3584 if (key.type == -1) { 3585 if (mac_addr) 3586 key.type = NL80211_KEYTYPE_PAIRWISE; 3587 else 3588 key.type = NL80211_KEYTYPE_GROUP; 3589 } 3590 3591 /* for now */ 3592 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3593 key.type != NL80211_KEYTYPE_GROUP) 3594 return -EINVAL; 3595 3596 if (!rdev->ops->del_key) 3597 return -EOPNOTSUPP; 3598 3599 wdev_lock(dev->ieee80211_ptr); 3600 err = nl80211_key_allowed(dev->ieee80211_ptr); 3601 3602 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3603 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3604 err = -ENOENT; 3605 3606 if (!err) 3607 err = rdev_del_key(rdev, dev, key.idx, 3608 key.type == NL80211_KEYTYPE_PAIRWISE, 3609 mac_addr); 3610 3611 #ifdef CONFIG_CFG80211_WEXT 3612 if (!err) { 3613 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3614 dev->ieee80211_ptr->wext.default_key = -1; 3615 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3616 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3617 } 3618 #endif 3619 wdev_unlock(dev->ieee80211_ptr); 3620 3621 return err; 3622 } 3623 3624 /* This function returns an error or the number of nested attributes */ 3625 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3626 { 3627 struct nlattr *attr; 3628 int n_entries = 0, tmp; 3629 3630 nla_for_each_nested(attr, nl_attr, tmp) { 3631 if (nla_len(attr) != ETH_ALEN) 3632 return -EINVAL; 3633 3634 n_entries++; 3635 } 3636 3637 return n_entries; 3638 } 3639 3640 /* 3641 * This function parses ACL information and allocates memory for ACL data. 3642 * On successful return, the calling function is responsible to free the 3643 * ACL buffer returned by this function. 3644 */ 3645 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3646 struct genl_info *info) 3647 { 3648 enum nl80211_acl_policy acl_policy; 3649 struct nlattr *attr; 3650 struct cfg80211_acl_data *acl; 3651 int i = 0, n_entries, tmp; 3652 3653 if (!wiphy->max_acl_mac_addrs) 3654 return ERR_PTR(-EOPNOTSUPP); 3655 3656 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3657 return ERR_PTR(-EINVAL); 3658 3659 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3660 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3661 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3662 return ERR_PTR(-EINVAL); 3663 3664 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3665 return ERR_PTR(-EINVAL); 3666 3667 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3668 if (n_entries < 0) 3669 return ERR_PTR(n_entries); 3670 3671 if (n_entries > wiphy->max_acl_mac_addrs) 3672 return ERR_PTR(-ENOTSUPP); 3673 3674 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3675 GFP_KERNEL); 3676 if (!acl) 3677 return ERR_PTR(-ENOMEM); 3678 3679 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3680 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3681 i++; 3682 } 3683 3684 acl->n_acl_entries = n_entries; 3685 acl->acl_policy = acl_policy; 3686 3687 return acl; 3688 } 3689 3690 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3691 { 3692 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3693 struct net_device *dev = info->user_ptr[1]; 3694 struct cfg80211_acl_data *acl; 3695 int err; 3696 3697 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3698 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3699 return -EOPNOTSUPP; 3700 3701 if (!dev->ieee80211_ptr->beacon_interval) 3702 return -EINVAL; 3703 3704 acl = parse_acl_data(&rdev->wiphy, info); 3705 if (IS_ERR(acl)) 3706 return PTR_ERR(acl); 3707 3708 err = rdev_set_mac_acl(rdev, dev, acl); 3709 3710 kfree(acl); 3711 3712 return err; 3713 } 3714 3715 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 3716 u8 *rates, u8 rates_len) 3717 { 3718 u8 i; 3719 u32 mask = 0; 3720 3721 for (i = 0; i < rates_len; i++) { 3722 int rate = (rates[i] & 0x7f) * 5; 3723 int ridx; 3724 3725 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 3726 struct ieee80211_rate *srate = 3727 &sband->bitrates[ridx]; 3728 if (rate == srate->bitrate) { 3729 mask |= 1 << ridx; 3730 break; 3731 } 3732 } 3733 if (ridx == sband->n_bitrates) 3734 return 0; /* rate not found */ 3735 } 3736 3737 return mask; 3738 } 3739 3740 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 3741 u8 *rates, u8 rates_len, 3742 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 3743 { 3744 u8 i; 3745 3746 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 3747 3748 for (i = 0; i < rates_len; i++) { 3749 int ridx, rbit; 3750 3751 ridx = rates[i] / 8; 3752 rbit = BIT(rates[i] % 8); 3753 3754 /* check validity */ 3755 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 3756 return false; 3757 3758 /* check availability */ 3759 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 3760 mcs[ridx] |= rbit; 3761 else 3762 return false; 3763 } 3764 3765 return true; 3766 } 3767 3768 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 3769 { 3770 u16 mcs_mask = 0; 3771 3772 switch (vht_mcs_map) { 3773 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 3774 break; 3775 case IEEE80211_VHT_MCS_SUPPORT_0_7: 3776 mcs_mask = 0x00FF; 3777 break; 3778 case IEEE80211_VHT_MCS_SUPPORT_0_8: 3779 mcs_mask = 0x01FF; 3780 break; 3781 case IEEE80211_VHT_MCS_SUPPORT_0_9: 3782 mcs_mask = 0x03FF; 3783 break; 3784 default: 3785 break; 3786 } 3787 3788 return mcs_mask; 3789 } 3790 3791 static void vht_build_mcs_mask(u16 vht_mcs_map, 3792 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 3793 { 3794 u8 nss; 3795 3796 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 3797 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 3798 vht_mcs_map >>= 2; 3799 } 3800 } 3801 3802 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 3803 struct nl80211_txrate_vht *txrate, 3804 u16 mcs[NL80211_VHT_NSS_MAX]) 3805 { 3806 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3807 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 3808 u8 i; 3809 3810 if (!sband->vht_cap.vht_supported) 3811 return false; 3812 3813 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 3814 3815 /* Build vht_mcs_mask from VHT capabilities */ 3816 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 3817 3818 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3819 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 3820 mcs[i] = txrate->mcs[i]; 3821 else 3822 return false; 3823 } 3824 3825 return true; 3826 } 3827 3828 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 3829 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 3830 .len = NL80211_MAX_SUPP_RATES }, 3831 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 3832 .len = NL80211_MAX_SUPP_HT_RATES }, 3833 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 3834 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 3835 }; 3836 3837 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 3838 struct cfg80211_bitrate_mask *mask) 3839 { 3840 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 3841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3842 int rem, i; 3843 struct nlattr *tx_rates; 3844 struct ieee80211_supported_band *sband; 3845 u16 vht_tx_mcs_map; 3846 3847 memset(mask, 0, sizeof(*mask)); 3848 /* Default to all rates enabled */ 3849 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3850 sband = rdev->wiphy.bands[i]; 3851 3852 if (!sband) 3853 continue; 3854 3855 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 3856 memcpy(mask->control[i].ht_mcs, 3857 sband->ht_cap.mcs.rx_mask, 3858 sizeof(mask->control[i].ht_mcs)); 3859 3860 if (!sband->vht_cap.vht_supported) 3861 continue; 3862 3863 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3864 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 3865 } 3866 3867 /* if no rates are given set it back to the defaults */ 3868 if (!info->attrs[NL80211_ATTR_TX_RATES]) 3869 goto out; 3870 3871 /* The nested attribute uses enum nl80211_band as the index. This maps 3872 * directly to the enum nl80211_band values used in cfg80211. 3873 */ 3874 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 3875 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 3876 enum nl80211_band band = nla_type(tx_rates); 3877 int err; 3878 3879 if (band < 0 || band >= NUM_NL80211_BANDS) 3880 return -EINVAL; 3881 sband = rdev->wiphy.bands[band]; 3882 if (sband == NULL) 3883 return -EINVAL; 3884 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates, 3885 nl80211_txattr_policy, info->extack); 3886 if (err) 3887 return err; 3888 if (tb[NL80211_TXRATE_LEGACY]) { 3889 mask->control[band].legacy = rateset_to_mask( 3890 sband, 3891 nla_data(tb[NL80211_TXRATE_LEGACY]), 3892 nla_len(tb[NL80211_TXRATE_LEGACY])); 3893 if ((mask->control[band].legacy == 0) && 3894 nla_len(tb[NL80211_TXRATE_LEGACY])) 3895 return -EINVAL; 3896 } 3897 if (tb[NL80211_TXRATE_HT]) { 3898 if (!ht_rateset_to_mask( 3899 sband, 3900 nla_data(tb[NL80211_TXRATE_HT]), 3901 nla_len(tb[NL80211_TXRATE_HT]), 3902 mask->control[band].ht_mcs)) 3903 return -EINVAL; 3904 } 3905 if (tb[NL80211_TXRATE_VHT]) { 3906 if (!vht_set_mcs_mask( 3907 sband, 3908 nla_data(tb[NL80211_TXRATE_VHT]), 3909 mask->control[band].vht_mcs)) 3910 return -EINVAL; 3911 } 3912 if (tb[NL80211_TXRATE_GI]) { 3913 mask->control[band].gi = 3914 nla_get_u8(tb[NL80211_TXRATE_GI]); 3915 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 3916 return -EINVAL; 3917 } 3918 3919 if (mask->control[band].legacy == 0) { 3920 /* don't allow empty legacy rates if HT or VHT 3921 * are not even supported. 3922 */ 3923 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 3924 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 3925 return -EINVAL; 3926 3927 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 3928 if (mask->control[band].ht_mcs[i]) 3929 goto out; 3930 3931 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 3932 if (mask->control[band].vht_mcs[i]) 3933 goto out; 3934 3935 /* legacy and mcs rates may not be both empty */ 3936 return -EINVAL; 3937 } 3938 } 3939 3940 out: 3941 return 0; 3942 } 3943 3944 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 3945 enum nl80211_band band, 3946 struct cfg80211_bitrate_mask *beacon_rate) 3947 { 3948 u32 count_ht, count_vht, i; 3949 u32 rate = beacon_rate->control[band].legacy; 3950 3951 /* Allow only one rate */ 3952 if (hweight32(rate) > 1) 3953 return -EINVAL; 3954 3955 count_ht = 0; 3956 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3957 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 3958 return -EINVAL; 3959 } else if (beacon_rate->control[band].ht_mcs[i]) { 3960 count_ht++; 3961 if (count_ht > 1) 3962 return -EINVAL; 3963 } 3964 if (count_ht && rate) 3965 return -EINVAL; 3966 } 3967 3968 count_vht = 0; 3969 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3970 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 3971 return -EINVAL; 3972 } else if (beacon_rate->control[band].vht_mcs[i]) { 3973 count_vht++; 3974 if (count_vht > 1) 3975 return -EINVAL; 3976 } 3977 if (count_vht && rate) 3978 return -EINVAL; 3979 } 3980 3981 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht)) 3982 return -EINVAL; 3983 3984 if (rate && 3985 !wiphy_ext_feature_isset(&rdev->wiphy, 3986 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 3987 return -EINVAL; 3988 if (count_ht && 3989 !wiphy_ext_feature_isset(&rdev->wiphy, 3990 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 3991 return -EINVAL; 3992 if (count_vht && 3993 !wiphy_ext_feature_isset(&rdev->wiphy, 3994 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 3995 return -EINVAL; 3996 3997 return 0; 3998 } 3999 4000 static int nl80211_parse_beacon(struct nlattr *attrs[], 4001 struct cfg80211_beacon_data *bcn) 4002 { 4003 bool haveinfo = false; 4004 4005 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 4006 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 4007 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 4008 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 4009 return -EINVAL; 4010 4011 memset(bcn, 0, sizeof(*bcn)); 4012 4013 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 4014 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 4015 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 4016 if (!bcn->head_len) 4017 return -EINVAL; 4018 haveinfo = true; 4019 } 4020 4021 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 4022 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 4023 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 4024 haveinfo = true; 4025 } 4026 4027 if (!haveinfo) 4028 return -EINVAL; 4029 4030 if (attrs[NL80211_ATTR_IE]) { 4031 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 4032 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 4033 } 4034 4035 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 4036 bcn->proberesp_ies = 4037 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4038 bcn->proberesp_ies_len = 4039 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 4040 } 4041 4042 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 4043 bcn->assocresp_ies = 4044 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4045 bcn->assocresp_ies_len = 4046 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 4047 } 4048 4049 if (attrs[NL80211_ATTR_PROBE_RESP]) { 4050 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 4051 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 4052 } 4053 4054 return 0; 4055 } 4056 4057 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 4058 const u8 *rates) 4059 { 4060 int i; 4061 4062 if (!rates) 4063 return; 4064 4065 for (i = 0; i < rates[1]; i++) { 4066 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 4067 params->ht_required = true; 4068 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 4069 params->vht_required = true; 4070 } 4071 } 4072 4073 /* 4074 * Since the nl80211 API didn't include, from the beginning, attributes about 4075 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 4076 * benefit of drivers that rebuild IEs in the firmware. 4077 */ 4078 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 4079 { 4080 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 4081 size_t ies_len = bcn->tail_len; 4082 const u8 *ies = bcn->tail; 4083 const u8 *rates; 4084 const u8 *cap; 4085 4086 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); 4087 nl80211_check_ap_rate_selectors(params, rates); 4088 4089 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 4090 nl80211_check_ap_rate_selectors(params, rates); 4091 4092 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); 4093 if (cap && cap[1] >= sizeof(*params->ht_cap)) 4094 params->ht_cap = (void *)(cap + 2); 4095 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 4096 if (cap && cap[1] >= sizeof(*params->vht_cap)) 4097 params->vht_cap = (void *)(cap + 2); 4098 cap = cfg80211_find_ext_ie(WLAN_EID_EXT_HE_CAPABILITY, ies, ies_len); 4099 if (cap && cap[1] >= sizeof(*params->he_cap) + 1) 4100 params->he_cap = (void *)(cap + 3); 4101 } 4102 4103 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 4104 struct cfg80211_ap_settings *params) 4105 { 4106 struct wireless_dev *wdev; 4107 bool ret = false; 4108 4109 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 4110 if (wdev->iftype != NL80211_IFTYPE_AP && 4111 wdev->iftype != NL80211_IFTYPE_P2P_GO) 4112 continue; 4113 4114 if (!wdev->preset_chandef.chan) 4115 continue; 4116 4117 params->chandef = wdev->preset_chandef; 4118 ret = true; 4119 break; 4120 } 4121 4122 return ret; 4123 } 4124 4125 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 4126 enum nl80211_auth_type auth_type, 4127 enum nl80211_commands cmd) 4128 { 4129 if (auth_type > NL80211_AUTHTYPE_MAX) 4130 return false; 4131 4132 switch (cmd) { 4133 case NL80211_CMD_AUTHENTICATE: 4134 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 4135 auth_type == NL80211_AUTHTYPE_SAE) 4136 return false; 4137 if (!wiphy_ext_feature_isset(&rdev->wiphy, 4138 NL80211_EXT_FEATURE_FILS_STA) && 4139 (auth_type == NL80211_AUTHTYPE_FILS_SK || 4140 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4141 auth_type == NL80211_AUTHTYPE_FILS_PK)) 4142 return false; 4143 return true; 4144 case NL80211_CMD_CONNECT: 4145 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 4146 auth_type == NL80211_AUTHTYPE_SAE) 4147 return false; 4148 4149 /* FILS with SK PFS or PK not supported yet */ 4150 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4151 auth_type == NL80211_AUTHTYPE_FILS_PK) 4152 return false; 4153 if (!wiphy_ext_feature_isset( 4154 &rdev->wiphy, 4155 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 4156 auth_type == NL80211_AUTHTYPE_FILS_SK) 4157 return false; 4158 return true; 4159 case NL80211_CMD_START_AP: 4160 /* SAE not supported yet */ 4161 if (auth_type == NL80211_AUTHTYPE_SAE) 4162 return false; 4163 /* FILS not supported yet */ 4164 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 4165 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 4166 auth_type == NL80211_AUTHTYPE_FILS_PK) 4167 return false; 4168 return true; 4169 default: 4170 return false; 4171 } 4172 } 4173 4174 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 4175 { 4176 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4177 struct net_device *dev = info->user_ptr[1]; 4178 struct wireless_dev *wdev = dev->ieee80211_ptr; 4179 struct cfg80211_ap_settings params; 4180 int err; 4181 4182 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4183 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4184 return -EOPNOTSUPP; 4185 4186 if (!rdev->ops->start_ap) 4187 return -EOPNOTSUPP; 4188 4189 if (wdev->beacon_interval) 4190 return -EALREADY; 4191 4192 memset(¶ms, 0, sizeof(params)); 4193 4194 /* these are required for START_AP */ 4195 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 4196 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 4197 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 4198 return -EINVAL; 4199 4200 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 4201 if (err) 4202 return err; 4203 4204 params.beacon_interval = 4205 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 4206 params.dtim_period = 4207 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 4208 4209 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 4210 params.beacon_interval); 4211 if (err) 4212 return err; 4213 4214 /* 4215 * In theory, some of these attributes should be required here 4216 * but since they were not used when the command was originally 4217 * added, keep them optional for old user space programs to let 4218 * them continue to work with drivers that do not need the 4219 * additional information -- drivers must check! 4220 */ 4221 if (info->attrs[NL80211_ATTR_SSID]) { 4222 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 4223 params.ssid_len = 4224 nla_len(info->attrs[NL80211_ATTR_SSID]); 4225 if (params.ssid_len == 0 || 4226 params.ssid_len > IEEE80211_MAX_SSID_LEN) 4227 return -EINVAL; 4228 } 4229 4230 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 4231 params.hidden_ssid = nla_get_u32( 4232 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 4233 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 4234 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 4235 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 4236 return -EINVAL; 4237 } 4238 4239 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 4240 4241 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 4242 params.auth_type = nla_get_u32( 4243 info->attrs[NL80211_ATTR_AUTH_TYPE]); 4244 if (!nl80211_valid_auth_type(rdev, params.auth_type, 4245 NL80211_CMD_START_AP)) 4246 return -EINVAL; 4247 } else 4248 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 4249 4250 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 4251 NL80211_MAX_NR_CIPHER_SUITES); 4252 if (err) 4253 return err; 4254 4255 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 4256 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 4257 return -EOPNOTSUPP; 4258 params.inactivity_timeout = nla_get_u16( 4259 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 4260 } 4261 4262 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4263 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4264 return -EINVAL; 4265 params.p2p_ctwindow = 4266 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4267 if (params.p2p_ctwindow > 127) 4268 return -EINVAL; 4269 if (params.p2p_ctwindow != 0 && 4270 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4271 return -EINVAL; 4272 } 4273 4274 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4275 u8 tmp; 4276 4277 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4278 return -EINVAL; 4279 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4280 if (tmp > 1) 4281 return -EINVAL; 4282 params.p2p_opp_ps = tmp; 4283 if (params.p2p_opp_ps != 0 && 4284 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4285 return -EINVAL; 4286 } 4287 4288 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 4289 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 4290 if (err) 4291 return err; 4292 } else if (wdev->preset_chandef.chan) { 4293 params.chandef = wdev->preset_chandef; 4294 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 4295 return -EINVAL; 4296 4297 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 4298 wdev->iftype)) 4299 return -EINVAL; 4300 4301 if (info->attrs[NL80211_ATTR_TX_RATES]) { 4302 err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate); 4303 if (err) 4304 return err; 4305 4306 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band, 4307 ¶ms.beacon_rate); 4308 if (err) 4309 return err; 4310 } 4311 4312 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 4313 params.smps_mode = 4314 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 4315 switch (params.smps_mode) { 4316 case NL80211_SMPS_OFF: 4317 break; 4318 case NL80211_SMPS_STATIC: 4319 if (!(rdev->wiphy.features & 4320 NL80211_FEATURE_STATIC_SMPS)) 4321 return -EINVAL; 4322 break; 4323 case NL80211_SMPS_DYNAMIC: 4324 if (!(rdev->wiphy.features & 4325 NL80211_FEATURE_DYNAMIC_SMPS)) 4326 return -EINVAL; 4327 break; 4328 default: 4329 return -EINVAL; 4330 } 4331 } else { 4332 params.smps_mode = NL80211_SMPS_OFF; 4333 } 4334 4335 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 4336 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 4337 return -EOPNOTSUPP; 4338 4339 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 4340 params.acl = parse_acl_data(&rdev->wiphy, info); 4341 if (IS_ERR(params.acl)) 4342 return PTR_ERR(params.acl); 4343 } 4344 4345 nl80211_calculate_ap_params(¶ms); 4346 4347 wdev_lock(wdev); 4348 err = rdev_start_ap(rdev, dev, ¶ms); 4349 if (!err) { 4350 wdev->preset_chandef = params.chandef; 4351 wdev->beacon_interval = params.beacon_interval; 4352 wdev->chandef = params.chandef; 4353 wdev->ssid_len = params.ssid_len; 4354 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 4355 4356 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 4357 wdev->conn_owner_nlportid = info->snd_portid; 4358 } 4359 wdev_unlock(wdev); 4360 4361 kfree(params.acl); 4362 4363 return err; 4364 } 4365 4366 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 4367 { 4368 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4369 struct net_device *dev = info->user_ptr[1]; 4370 struct wireless_dev *wdev = dev->ieee80211_ptr; 4371 struct cfg80211_beacon_data params; 4372 int err; 4373 4374 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4375 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4376 return -EOPNOTSUPP; 4377 4378 if (!rdev->ops->change_beacon) 4379 return -EOPNOTSUPP; 4380 4381 if (!wdev->beacon_interval) 4382 return -EINVAL; 4383 4384 err = nl80211_parse_beacon(info->attrs, ¶ms); 4385 if (err) 4386 return err; 4387 4388 wdev_lock(wdev); 4389 err = rdev_change_beacon(rdev, dev, ¶ms); 4390 wdev_unlock(wdev); 4391 4392 return err; 4393 } 4394 4395 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 4396 { 4397 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4398 struct net_device *dev = info->user_ptr[1]; 4399 4400 return cfg80211_stop_ap(rdev, dev, false); 4401 } 4402 4403 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 4404 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 4405 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 4406 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 4407 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 4408 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 4409 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 4410 }; 4411 4412 static int parse_station_flags(struct genl_info *info, 4413 enum nl80211_iftype iftype, 4414 struct station_parameters *params) 4415 { 4416 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 4417 struct nlattr *nla; 4418 int flag; 4419 4420 /* 4421 * Try parsing the new attribute first so userspace 4422 * can specify both for older kernels. 4423 */ 4424 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 4425 if (nla) { 4426 struct nl80211_sta_flag_update *sta_flags; 4427 4428 sta_flags = nla_data(nla); 4429 params->sta_flags_mask = sta_flags->mask; 4430 params->sta_flags_set = sta_flags->set; 4431 params->sta_flags_set &= params->sta_flags_mask; 4432 if ((params->sta_flags_mask | 4433 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 4434 return -EINVAL; 4435 return 0; 4436 } 4437 4438 /* if present, parse the old attribute */ 4439 4440 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 4441 if (!nla) 4442 return 0; 4443 4444 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla, 4445 sta_flags_policy, info->extack)) 4446 return -EINVAL; 4447 4448 /* 4449 * Only allow certain flags for interface types so that 4450 * other attributes are silently ignored. Remember that 4451 * this is backward compatibility code with old userspace 4452 * and shouldn't be hit in other cases anyway. 4453 */ 4454 switch (iftype) { 4455 case NL80211_IFTYPE_AP: 4456 case NL80211_IFTYPE_AP_VLAN: 4457 case NL80211_IFTYPE_P2P_GO: 4458 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4459 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4460 BIT(NL80211_STA_FLAG_WME) | 4461 BIT(NL80211_STA_FLAG_MFP); 4462 break; 4463 case NL80211_IFTYPE_P2P_CLIENT: 4464 case NL80211_IFTYPE_STATION: 4465 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4466 BIT(NL80211_STA_FLAG_TDLS_PEER); 4467 break; 4468 case NL80211_IFTYPE_MESH_POINT: 4469 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4470 BIT(NL80211_STA_FLAG_MFP) | 4471 BIT(NL80211_STA_FLAG_AUTHORIZED); 4472 break; 4473 default: 4474 return -EINVAL; 4475 } 4476 4477 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 4478 if (flags[flag]) { 4479 params->sta_flags_set |= (1<<flag); 4480 4481 /* no longer support new API additions in old API */ 4482 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 4483 return -EINVAL; 4484 } 4485 } 4486 4487 return 0; 4488 } 4489 4490 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 4491 int attr) 4492 { 4493 struct nlattr *rate; 4494 u32 bitrate; 4495 u16 bitrate_compat; 4496 enum nl80211_rate_info rate_flg; 4497 4498 rate = nla_nest_start(msg, attr); 4499 if (!rate) 4500 return false; 4501 4502 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 4503 bitrate = cfg80211_calculate_bitrate(info); 4504 /* report 16-bit bitrate only if we can */ 4505 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 4506 if (bitrate > 0 && 4507 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 4508 return false; 4509 if (bitrate_compat > 0 && 4510 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 4511 return false; 4512 4513 switch (info->bw) { 4514 case RATE_INFO_BW_5: 4515 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 4516 break; 4517 case RATE_INFO_BW_10: 4518 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 4519 break; 4520 default: 4521 WARN_ON(1); 4522 /* fall through */ 4523 case RATE_INFO_BW_20: 4524 rate_flg = 0; 4525 break; 4526 case RATE_INFO_BW_40: 4527 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 4528 break; 4529 case RATE_INFO_BW_80: 4530 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 4531 break; 4532 case RATE_INFO_BW_160: 4533 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 4534 break; 4535 case RATE_INFO_BW_HE_RU: 4536 rate_flg = 0; 4537 WARN_ON(!(info->flags & RATE_INFO_FLAGS_HE_MCS)); 4538 } 4539 4540 if (rate_flg && nla_put_flag(msg, rate_flg)) 4541 return false; 4542 4543 if (info->flags & RATE_INFO_FLAGS_MCS) { 4544 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 4545 return false; 4546 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4547 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4548 return false; 4549 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 4550 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 4551 return false; 4552 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 4553 return false; 4554 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4555 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4556 return false; 4557 } else if (info->flags & RATE_INFO_FLAGS_HE_MCS) { 4558 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_MCS, info->mcs)) 4559 return false; 4560 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_NSS, info->nss)) 4561 return false; 4562 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_GI, info->he_gi)) 4563 return false; 4564 if (nla_put_u8(msg, NL80211_RATE_INFO_HE_DCM, info->he_dcm)) 4565 return false; 4566 if (info->bw == RATE_INFO_BW_HE_RU && 4567 nla_put_u8(msg, NL80211_RATE_INFO_HE_RU_ALLOC, 4568 info->he_ru_alloc)) 4569 return false; 4570 } 4571 4572 nla_nest_end(msg, rate); 4573 return true; 4574 } 4575 4576 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 4577 int id) 4578 { 4579 void *attr; 4580 int i = 0; 4581 4582 if (!mask) 4583 return true; 4584 4585 attr = nla_nest_start(msg, id); 4586 if (!attr) 4587 return false; 4588 4589 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 4590 if (!(mask & BIT(i))) 4591 continue; 4592 4593 if (nla_put_u8(msg, i, signal[i])) 4594 return false; 4595 } 4596 4597 nla_nest_end(msg, attr); 4598 4599 return true; 4600 } 4601 4602 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 4603 u32 seq, int flags, 4604 struct cfg80211_registered_device *rdev, 4605 struct net_device *dev, 4606 const u8 *mac_addr, struct station_info *sinfo) 4607 { 4608 void *hdr; 4609 struct nlattr *sinfoattr, *bss_param; 4610 4611 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 4612 if (!hdr) 4613 return -1; 4614 4615 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4616 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 4617 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 4618 goto nla_put_failure; 4619 4620 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 4621 if (!sinfoattr) 4622 goto nla_put_failure; 4623 4624 #define PUT_SINFO(attr, memb, type) do { \ 4625 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 4626 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 4627 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 4628 sinfo->memb)) \ 4629 goto nla_put_failure; \ 4630 } while (0) 4631 #define PUT_SINFO_U64(attr, memb) do { \ 4632 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_ ## attr) && \ 4633 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 4634 sinfo->memb, NL80211_STA_INFO_PAD)) \ 4635 goto nla_put_failure; \ 4636 } while (0) 4637 4638 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 4639 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 4640 4641 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_RX_BYTES) | 4642 BIT_ULL(NL80211_STA_INFO_RX_BYTES64)) && 4643 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 4644 (u32)sinfo->rx_bytes)) 4645 goto nla_put_failure; 4646 4647 if (sinfo->filled & (BIT_ULL(NL80211_STA_INFO_TX_BYTES) | 4648 BIT_ULL(NL80211_STA_INFO_TX_BYTES64)) && 4649 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 4650 (u32)sinfo->tx_bytes)) 4651 goto nla_put_failure; 4652 4653 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 4654 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 4655 PUT_SINFO(LLID, llid, u16); 4656 PUT_SINFO(PLID, plid, u16); 4657 PUT_SINFO(PLINK_STATE, plink_state, u8); 4658 PUT_SINFO_U64(RX_DURATION, rx_duration); 4659 4660 switch (rdev->wiphy.signal_type) { 4661 case CFG80211_SIGNAL_TYPE_MBM: 4662 PUT_SINFO(SIGNAL, signal, u8); 4663 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 4664 break; 4665 default: 4666 break; 4667 } 4668 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL)) { 4669 if (!nl80211_put_signal(msg, sinfo->chains, 4670 sinfo->chain_signal, 4671 NL80211_STA_INFO_CHAIN_SIGNAL)) 4672 goto nla_put_failure; 4673 } 4674 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 4675 if (!nl80211_put_signal(msg, sinfo->chains, 4676 sinfo->chain_signal_avg, 4677 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 4678 goto nla_put_failure; 4679 } 4680 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_TX_BITRATE)) { 4681 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 4682 NL80211_STA_INFO_TX_BITRATE)) 4683 goto nla_put_failure; 4684 } 4685 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_RX_BITRATE)) { 4686 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 4687 NL80211_STA_INFO_RX_BITRATE)) 4688 goto nla_put_failure; 4689 } 4690 4691 PUT_SINFO(RX_PACKETS, rx_packets, u32); 4692 PUT_SINFO(TX_PACKETS, tx_packets, u32); 4693 PUT_SINFO(TX_RETRIES, tx_retries, u32); 4694 PUT_SINFO(TX_FAILED, tx_failed, u32); 4695 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 4696 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 4697 PUT_SINFO(LOCAL_PM, local_pm, u32); 4698 PUT_SINFO(PEER_PM, peer_pm, u32); 4699 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 4700 4701 if (sinfo->filled & BIT_ULL(NL80211_STA_INFO_BSS_PARAM)) { 4702 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 4703 if (!bss_param) 4704 goto nla_put_failure; 4705 4706 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 4707 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 4708 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 4709 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 4710 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 4711 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 4712 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 4713 sinfo->bss_param.dtim_period) || 4714 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 4715 sinfo->bss_param.beacon_interval)) 4716 goto nla_put_failure; 4717 4718 nla_nest_end(msg, bss_param); 4719 } 4720 if ((sinfo->filled & BIT_ULL(NL80211_STA_INFO_STA_FLAGS)) && 4721 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 4722 sizeof(struct nl80211_sta_flag_update), 4723 &sinfo->sta_flags)) 4724 goto nla_put_failure; 4725 4726 PUT_SINFO_U64(T_OFFSET, t_offset); 4727 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 4728 PUT_SINFO_U64(BEACON_RX, rx_beacon); 4729 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 4730 if (wiphy_ext_feature_isset(&rdev->wiphy, 4731 NL80211_EXT_FEATURE_ACK_SIGNAL_SUPPORT)) { 4732 PUT_SINFO(ACK_SIGNAL, ack_signal, u8); 4733 PUT_SINFO(ACK_SIGNAL_AVG, avg_ack_signal, s8); 4734 } 4735 4736 #undef PUT_SINFO 4737 #undef PUT_SINFO_U64 4738 4739 if (sinfo->pertid) { 4740 struct nlattr *tidsattr; 4741 int tid; 4742 4743 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 4744 if (!tidsattr) 4745 goto nla_put_failure; 4746 4747 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 4748 struct cfg80211_tid_stats *tidstats; 4749 struct nlattr *tidattr; 4750 4751 tidstats = &sinfo->pertid[tid]; 4752 4753 if (!tidstats->filled) 4754 continue; 4755 4756 tidattr = nla_nest_start(msg, tid + 1); 4757 if (!tidattr) 4758 goto nla_put_failure; 4759 4760 #define PUT_TIDVAL_U64(attr, memb) do { \ 4761 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 4762 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 4763 tidstats->memb, NL80211_TID_STATS_PAD)) \ 4764 goto nla_put_failure; \ 4765 } while (0) 4766 4767 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 4768 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 4769 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 4770 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 4771 4772 #undef PUT_TIDVAL_U64 4773 if ((tidstats->filled & 4774 BIT(NL80211_TID_STATS_TXQ_STATS)) && 4775 !nl80211_put_txq_stats(msg, &tidstats->txq_stats, 4776 NL80211_TID_STATS_TXQ_STATS)) 4777 goto nla_put_failure; 4778 4779 nla_nest_end(msg, tidattr); 4780 } 4781 4782 nla_nest_end(msg, tidsattr); 4783 } 4784 4785 nla_nest_end(msg, sinfoattr); 4786 4787 if (sinfo->assoc_req_ies_len && 4788 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 4789 sinfo->assoc_req_ies)) 4790 goto nla_put_failure; 4791 4792 cfg80211_sinfo_release_content(sinfo); 4793 genlmsg_end(msg, hdr); 4794 return 0; 4795 4796 nla_put_failure: 4797 cfg80211_sinfo_release_content(sinfo); 4798 genlmsg_cancel(msg, hdr); 4799 return -EMSGSIZE; 4800 } 4801 4802 static int nl80211_dump_station(struct sk_buff *skb, 4803 struct netlink_callback *cb) 4804 { 4805 struct station_info sinfo; 4806 struct cfg80211_registered_device *rdev; 4807 struct wireless_dev *wdev; 4808 u8 mac_addr[ETH_ALEN]; 4809 int sta_idx = cb->args[2]; 4810 int err; 4811 4812 rtnl_lock(); 4813 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4814 if (err) 4815 goto out_err; 4816 4817 if (!wdev->netdev) { 4818 err = -EINVAL; 4819 goto out_err; 4820 } 4821 4822 if (!rdev->ops->dump_station) { 4823 err = -EOPNOTSUPP; 4824 goto out_err; 4825 } 4826 4827 while (1) { 4828 memset(&sinfo, 0, sizeof(sinfo)); 4829 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 4830 mac_addr, &sinfo); 4831 if (err == -ENOENT) 4832 break; 4833 if (err) 4834 goto out_err; 4835 4836 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 4837 NETLINK_CB(cb->skb).portid, 4838 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4839 rdev, wdev->netdev, mac_addr, 4840 &sinfo) < 0) 4841 goto out; 4842 4843 sta_idx++; 4844 } 4845 4846 out: 4847 cb->args[2] = sta_idx; 4848 err = skb->len; 4849 out_err: 4850 rtnl_unlock(); 4851 4852 return err; 4853 } 4854 4855 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 4856 { 4857 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4858 struct net_device *dev = info->user_ptr[1]; 4859 struct station_info sinfo; 4860 struct sk_buff *msg; 4861 u8 *mac_addr = NULL; 4862 int err; 4863 4864 memset(&sinfo, 0, sizeof(sinfo)); 4865 4866 if (!info->attrs[NL80211_ATTR_MAC]) 4867 return -EINVAL; 4868 4869 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4870 4871 if (!rdev->ops->get_station) 4872 return -EOPNOTSUPP; 4873 4874 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 4875 if (err) 4876 return err; 4877 4878 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4879 if (!msg) { 4880 cfg80211_sinfo_release_content(&sinfo); 4881 return -ENOMEM; 4882 } 4883 4884 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 4885 info->snd_portid, info->snd_seq, 0, 4886 rdev, dev, mac_addr, &sinfo) < 0) { 4887 nlmsg_free(msg); 4888 return -ENOBUFS; 4889 } 4890 4891 return genlmsg_reply(msg, info); 4892 } 4893 4894 int cfg80211_check_station_change(struct wiphy *wiphy, 4895 struct station_parameters *params, 4896 enum cfg80211_station_type statype) 4897 { 4898 if (params->listen_interval != -1 && 4899 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4900 return -EINVAL; 4901 4902 if (params->support_p2p_ps != -1 && 4903 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4904 return -EINVAL; 4905 4906 if (params->aid && 4907 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 4908 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4909 return -EINVAL; 4910 4911 /* When you run into this, adjust the code below for the new flag */ 4912 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4913 4914 switch (statype) { 4915 case CFG80211_STA_MESH_PEER_KERNEL: 4916 case CFG80211_STA_MESH_PEER_USER: 4917 /* 4918 * No ignoring the TDLS flag here -- the userspace mesh 4919 * code doesn't have the bug of including TDLS in the 4920 * mask everywhere. 4921 */ 4922 if (params->sta_flags_mask & 4923 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4924 BIT(NL80211_STA_FLAG_MFP) | 4925 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4926 return -EINVAL; 4927 break; 4928 case CFG80211_STA_TDLS_PEER_SETUP: 4929 case CFG80211_STA_TDLS_PEER_ACTIVE: 4930 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4931 return -EINVAL; 4932 /* ignore since it can't change */ 4933 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4934 break; 4935 default: 4936 /* disallow mesh-specific things */ 4937 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4938 return -EINVAL; 4939 if (params->local_pm) 4940 return -EINVAL; 4941 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4942 return -EINVAL; 4943 } 4944 4945 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4946 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4947 /* TDLS can't be set, ... */ 4948 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4949 return -EINVAL; 4950 /* 4951 * ... but don't bother the driver with it. This works around 4952 * a hostapd/wpa_supplicant issue -- it always includes the 4953 * TLDS_PEER flag in the mask even for AP mode. 4954 */ 4955 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4956 } 4957 4958 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4959 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4960 /* reject other things that can't change */ 4961 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4962 return -EINVAL; 4963 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4964 return -EINVAL; 4965 if (params->supported_rates) 4966 return -EINVAL; 4967 if (params->ext_capab || params->ht_capa || params->vht_capa || 4968 params->he_capa) 4969 return -EINVAL; 4970 } 4971 4972 if (statype != CFG80211_STA_AP_CLIENT && 4973 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4974 if (params->vlan) 4975 return -EINVAL; 4976 } 4977 4978 switch (statype) { 4979 case CFG80211_STA_AP_MLME_CLIENT: 4980 /* Use this only for authorizing/unauthorizing a station */ 4981 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4982 return -EOPNOTSUPP; 4983 break; 4984 case CFG80211_STA_AP_CLIENT: 4985 case CFG80211_STA_AP_CLIENT_UNASSOC: 4986 /* accept only the listed bits */ 4987 if (params->sta_flags_mask & 4988 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4989 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4990 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4991 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4992 BIT(NL80211_STA_FLAG_WME) | 4993 BIT(NL80211_STA_FLAG_MFP))) 4994 return -EINVAL; 4995 4996 /* but authenticated/associated only if driver handles it */ 4997 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4998 params->sta_flags_mask & 4999 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5000 BIT(NL80211_STA_FLAG_ASSOCIATED))) 5001 return -EINVAL; 5002 break; 5003 case CFG80211_STA_IBSS: 5004 case CFG80211_STA_AP_STA: 5005 /* reject any changes other than AUTHORIZED */ 5006 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 5007 return -EINVAL; 5008 break; 5009 case CFG80211_STA_TDLS_PEER_SETUP: 5010 /* reject any changes other than AUTHORIZED or WME */ 5011 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 5012 BIT(NL80211_STA_FLAG_WME))) 5013 return -EINVAL; 5014 /* force (at least) rates when authorizing */ 5015 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 5016 !params->supported_rates) 5017 return -EINVAL; 5018 break; 5019 case CFG80211_STA_TDLS_PEER_ACTIVE: 5020 /* reject any changes */ 5021 return -EINVAL; 5022 case CFG80211_STA_MESH_PEER_KERNEL: 5023 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 5024 return -EINVAL; 5025 break; 5026 case CFG80211_STA_MESH_PEER_USER: 5027 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 5028 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 5029 return -EINVAL; 5030 break; 5031 } 5032 5033 /* 5034 * Older kernel versions ignored this attribute entirely, so don't 5035 * reject attempts to update it but mark it as unused instead so the 5036 * driver won't look at the data. 5037 */ 5038 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 5039 statype != CFG80211_STA_TDLS_PEER_SETUP) 5040 params->opmode_notif_used = false; 5041 5042 return 0; 5043 } 5044 EXPORT_SYMBOL(cfg80211_check_station_change); 5045 5046 /* 5047 * Get vlan interface making sure it is running and on the right wiphy. 5048 */ 5049 static struct net_device *get_vlan(struct genl_info *info, 5050 struct cfg80211_registered_device *rdev) 5051 { 5052 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 5053 struct net_device *v; 5054 int ret; 5055 5056 if (!vlanattr) 5057 return NULL; 5058 5059 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 5060 if (!v) 5061 return ERR_PTR(-ENODEV); 5062 5063 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 5064 ret = -EINVAL; 5065 goto error; 5066 } 5067 5068 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5069 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5070 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 5071 ret = -EINVAL; 5072 goto error; 5073 } 5074 5075 if (!netif_running(v)) { 5076 ret = -ENETDOWN; 5077 goto error; 5078 } 5079 5080 return v; 5081 error: 5082 dev_put(v); 5083 return ERR_PTR(ret); 5084 } 5085 5086 static const struct nla_policy 5087 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 5088 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 5089 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 5090 }; 5091 5092 static int nl80211_parse_sta_wme(struct genl_info *info, 5093 struct station_parameters *params) 5094 { 5095 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 5096 struct nlattr *nla; 5097 int err; 5098 5099 /* parse WME attributes if present */ 5100 if (!info->attrs[NL80211_ATTR_STA_WME]) 5101 return 0; 5102 5103 nla = info->attrs[NL80211_ATTR_STA_WME]; 5104 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 5105 nl80211_sta_wme_policy, info->extack); 5106 if (err) 5107 return err; 5108 5109 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 5110 params->uapsd_queues = nla_get_u8( 5111 tb[NL80211_STA_WME_UAPSD_QUEUES]); 5112 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 5113 return -EINVAL; 5114 5115 if (tb[NL80211_STA_WME_MAX_SP]) 5116 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 5117 5118 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 5119 return -EINVAL; 5120 5121 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 5122 5123 return 0; 5124 } 5125 5126 static int nl80211_parse_sta_channel_info(struct genl_info *info, 5127 struct station_parameters *params) 5128 { 5129 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 5130 params->supported_channels = 5131 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 5132 params->supported_channels_len = 5133 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 5134 /* 5135 * Need to include at least one (first channel, number of 5136 * channels) tuple for each subband, and must have proper 5137 * tuples for the rest of the data as well. 5138 */ 5139 if (params->supported_channels_len < 2) 5140 return -EINVAL; 5141 if (params->supported_channels_len % 2) 5142 return -EINVAL; 5143 } 5144 5145 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 5146 params->supported_oper_classes = 5147 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 5148 params->supported_oper_classes_len = 5149 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 5150 /* 5151 * The value of the Length field of the Supported Operating 5152 * Classes element is between 2 and 253. 5153 */ 5154 if (params->supported_oper_classes_len < 2 || 5155 params->supported_oper_classes_len > 253) 5156 return -EINVAL; 5157 } 5158 return 0; 5159 } 5160 5161 static int nl80211_set_station_tdls(struct genl_info *info, 5162 struct station_parameters *params) 5163 { 5164 int err; 5165 /* Dummy STA entry gets updated once the peer capabilities are known */ 5166 if (info->attrs[NL80211_ATTR_PEER_AID]) 5167 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5168 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5169 params->ht_capa = 5170 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5171 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5172 params->vht_capa = 5173 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5174 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 5175 params->he_capa = 5176 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5177 params->he_capa_len = 5178 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5179 5180 if (params->he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN) 5181 return -EINVAL; 5182 } 5183 5184 err = nl80211_parse_sta_channel_info(info, params); 5185 if (err) 5186 return err; 5187 5188 return nl80211_parse_sta_wme(info, params); 5189 } 5190 5191 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 5192 { 5193 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5194 struct net_device *dev = info->user_ptr[1]; 5195 struct station_parameters params; 5196 u8 *mac_addr; 5197 int err; 5198 5199 memset(¶ms, 0, sizeof(params)); 5200 5201 if (!rdev->ops->change_station) 5202 return -EOPNOTSUPP; 5203 5204 /* 5205 * AID and listen_interval properties can be set only for unassociated 5206 * station. Include these parameters here and will check them in 5207 * cfg80211_check_station_change(). 5208 */ 5209 if (info->attrs[NL80211_ATTR_STA_AID]) 5210 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5211 5212 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5213 params.listen_interval = 5214 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5215 else 5216 params.listen_interval = -1; 5217 5218 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 5219 u8 tmp; 5220 5221 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5222 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 5223 return -EINVAL; 5224 5225 params.support_p2p_ps = tmp; 5226 } else { 5227 params.support_p2p_ps = -1; 5228 } 5229 5230 if (!info->attrs[NL80211_ATTR_MAC]) 5231 return -EINVAL; 5232 5233 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5234 5235 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 5236 params.supported_rates = 5237 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5238 params.supported_rates_len = 5239 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5240 } 5241 5242 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5243 params.capability = 5244 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5245 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5246 } 5247 5248 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5249 params.ext_capab = 5250 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5251 params.ext_capab_len = 5252 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5253 } 5254 5255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5256 return -EINVAL; 5257 5258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 5259 params.plink_action = 5260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 5262 return -EINVAL; 5263 } 5264 5265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 5266 params.plink_state = 5267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 5268 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 5269 return -EINVAL; 5270 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) { 5271 params.peer_aid = nla_get_u16( 5272 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 5273 if (params.peer_aid > IEEE80211_MAX_AID) 5274 return -EINVAL; 5275 } 5276 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 5277 } 5278 5279 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 5280 enum nl80211_mesh_power_mode pm = nla_get_u32( 5281 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 5282 5283 if (pm <= NL80211_MESH_POWER_UNKNOWN || 5284 pm > NL80211_MESH_POWER_MAX) 5285 return -EINVAL; 5286 5287 params.local_pm = pm; 5288 } 5289 5290 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5291 params.opmode_notif_used = true; 5292 params.opmode_notif = 5293 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5294 } 5295 5296 /* Include parameters for TDLS peer (will check later) */ 5297 err = nl80211_set_station_tdls(info, ¶ms); 5298 if (err) 5299 return err; 5300 5301 params.vlan = get_vlan(info, rdev); 5302 if (IS_ERR(params.vlan)) 5303 return PTR_ERR(params.vlan); 5304 5305 switch (dev->ieee80211_ptr->iftype) { 5306 case NL80211_IFTYPE_AP: 5307 case NL80211_IFTYPE_AP_VLAN: 5308 case NL80211_IFTYPE_P2P_GO: 5309 case NL80211_IFTYPE_P2P_CLIENT: 5310 case NL80211_IFTYPE_STATION: 5311 case NL80211_IFTYPE_ADHOC: 5312 case NL80211_IFTYPE_MESH_POINT: 5313 break; 5314 default: 5315 err = -EOPNOTSUPP; 5316 goto out_put_vlan; 5317 } 5318 5319 /* driver will call cfg80211_check_station_change() */ 5320 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 5321 5322 out_put_vlan: 5323 if (params.vlan) 5324 dev_put(params.vlan); 5325 5326 return err; 5327 } 5328 5329 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 5330 { 5331 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5332 int err; 5333 struct net_device *dev = info->user_ptr[1]; 5334 struct station_parameters params; 5335 u8 *mac_addr = NULL; 5336 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5337 BIT(NL80211_STA_FLAG_ASSOCIATED); 5338 5339 memset(¶ms, 0, sizeof(params)); 5340 5341 if (!rdev->ops->add_station) 5342 return -EOPNOTSUPP; 5343 5344 if (!info->attrs[NL80211_ATTR_MAC]) 5345 return -EINVAL; 5346 5347 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5348 return -EINVAL; 5349 5350 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 5351 return -EINVAL; 5352 5353 if (!info->attrs[NL80211_ATTR_STA_AID] && 5354 !info->attrs[NL80211_ATTR_PEER_AID]) 5355 return -EINVAL; 5356 5357 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5358 params.supported_rates = 5359 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5360 params.supported_rates_len = 5361 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5362 params.listen_interval = 5363 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5364 5365 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 5366 u8 tmp; 5367 5368 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5369 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 5370 return -EINVAL; 5371 5372 params.support_p2p_ps = tmp; 5373 } else { 5374 /* 5375 * if not specified, assume it's supported for P2P GO interface, 5376 * and is NOT supported for AP interface 5377 */ 5378 params.support_p2p_ps = 5379 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 5380 } 5381 5382 if (info->attrs[NL80211_ATTR_PEER_AID]) 5383 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5384 else 5385 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5386 if (!params.aid || params.aid > IEEE80211_MAX_AID) 5387 return -EINVAL; 5388 5389 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5390 params.capability = 5391 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5392 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5393 } 5394 5395 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5396 params.ext_capab = 5397 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5398 params.ext_capab_len = 5399 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5400 } 5401 5402 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5403 params.ht_capa = 5404 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5405 5406 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5407 params.vht_capa = 5408 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5409 5410 if (info->attrs[NL80211_ATTR_HE_CAPABILITY]) { 5411 params.he_capa = 5412 nla_data(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5413 params.he_capa_len = 5414 nla_len(info->attrs[NL80211_ATTR_HE_CAPABILITY]); 5415 5416 /* max len is validated in nla policy */ 5417 if (params.he_capa_len < NL80211_HE_MIN_CAPABILITY_LEN) 5418 return -EINVAL; 5419 } 5420 5421 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5422 params.opmode_notif_used = true; 5423 params.opmode_notif = 5424 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5425 } 5426 5427 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 5428 params.plink_action = 5429 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5430 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 5431 return -EINVAL; 5432 } 5433 5434 err = nl80211_parse_sta_channel_info(info, ¶ms); 5435 if (err) 5436 return err; 5437 5438 err = nl80211_parse_sta_wme(info, ¶ms); 5439 if (err) 5440 return err; 5441 5442 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5443 return -EINVAL; 5444 5445 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 5446 * as userspace might just pass through the capabilities from the IEs 5447 * directly, rather than enforcing this restriction and returning an 5448 * error in this case. 5449 */ 5450 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 5451 params.ht_capa = NULL; 5452 params.vht_capa = NULL; 5453 5454 /* HE requires WME */ 5455 if (params.he_capa_len) 5456 return -EINVAL; 5457 } 5458 5459 /* When you run into this, adjust the code below for the new flag */ 5460 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 5461 5462 switch (dev->ieee80211_ptr->iftype) { 5463 case NL80211_IFTYPE_AP: 5464 case NL80211_IFTYPE_AP_VLAN: 5465 case NL80211_IFTYPE_P2P_GO: 5466 /* ignore WME attributes if iface/sta is not capable */ 5467 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 5468 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 5469 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5470 5471 /* TDLS peers cannot be added */ 5472 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5473 info->attrs[NL80211_ATTR_PEER_AID]) 5474 return -EINVAL; 5475 /* but don't bother the driver with it */ 5476 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5477 5478 /* allow authenticated/associated only if driver handles it */ 5479 if (!(rdev->wiphy.features & 5480 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 5481 params.sta_flags_mask & auth_assoc) 5482 return -EINVAL; 5483 5484 /* Older userspace, or userspace wanting to be compatible with 5485 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 5486 * and assoc flags in the mask, but assumes the station will be 5487 * added as associated anyway since this was the required driver 5488 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 5489 * introduced. 5490 * In order to not bother drivers with this quirk in the API 5491 * set the flags in both the mask and set for new stations in 5492 * this case. 5493 */ 5494 if (!(params.sta_flags_mask & auth_assoc)) { 5495 params.sta_flags_mask |= auth_assoc; 5496 params.sta_flags_set |= auth_assoc; 5497 } 5498 5499 /* must be last in here for error handling */ 5500 params.vlan = get_vlan(info, rdev); 5501 if (IS_ERR(params.vlan)) 5502 return PTR_ERR(params.vlan); 5503 break; 5504 case NL80211_IFTYPE_MESH_POINT: 5505 /* ignore uAPSD data */ 5506 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5507 5508 /* associated is disallowed */ 5509 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 5510 return -EINVAL; 5511 /* TDLS peers cannot be added */ 5512 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5513 info->attrs[NL80211_ATTR_PEER_AID]) 5514 return -EINVAL; 5515 break; 5516 case NL80211_IFTYPE_STATION: 5517 case NL80211_IFTYPE_P2P_CLIENT: 5518 /* ignore uAPSD data */ 5519 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5520 5521 /* these are disallowed */ 5522 if (params.sta_flags_mask & 5523 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 5524 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 5525 return -EINVAL; 5526 /* Only TDLS peers can be added */ 5527 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 5528 return -EINVAL; 5529 /* Can only add if TDLS ... */ 5530 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 5531 return -EOPNOTSUPP; 5532 /* ... with external setup is supported */ 5533 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 5534 return -EOPNOTSUPP; 5535 /* 5536 * Older wpa_supplicant versions always mark the TDLS peer 5537 * as authorized, but it shouldn't yet be. 5538 */ 5539 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 5540 break; 5541 default: 5542 return -EOPNOTSUPP; 5543 } 5544 5545 /* be aware of params.vlan when changing code here */ 5546 5547 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 5548 5549 if (params.vlan) 5550 dev_put(params.vlan); 5551 return err; 5552 } 5553 5554 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 5555 { 5556 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5557 struct net_device *dev = info->user_ptr[1]; 5558 struct station_del_parameters params; 5559 5560 memset(¶ms, 0, sizeof(params)); 5561 5562 if (info->attrs[NL80211_ATTR_MAC]) 5563 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 5564 5565 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5566 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 5568 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5569 return -EINVAL; 5570 5571 if (!rdev->ops->del_station) 5572 return -EOPNOTSUPP; 5573 5574 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 5575 params.subtype = 5576 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 5577 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 5578 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 5579 return -EINVAL; 5580 } else { 5581 /* Default to Deauthentication frame */ 5582 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 5583 } 5584 5585 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 5586 params.reason_code = 5587 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 5588 if (params.reason_code == 0) 5589 return -EINVAL; /* 0 is reserved */ 5590 } else { 5591 /* Default to reason code 2 */ 5592 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 5593 } 5594 5595 return rdev_del_station(rdev, dev, ¶ms); 5596 } 5597 5598 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 5599 int flags, struct net_device *dev, 5600 u8 *dst, u8 *next_hop, 5601 struct mpath_info *pinfo) 5602 { 5603 void *hdr; 5604 struct nlattr *pinfoattr; 5605 5606 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 5607 if (!hdr) 5608 return -1; 5609 5610 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5611 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 5612 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 5613 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 5614 goto nla_put_failure; 5615 5616 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 5617 if (!pinfoattr) 5618 goto nla_put_failure; 5619 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 5620 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 5621 pinfo->frame_qlen)) 5622 goto nla_put_failure; 5623 if (((pinfo->filled & MPATH_INFO_SN) && 5624 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 5625 ((pinfo->filled & MPATH_INFO_METRIC) && 5626 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 5627 pinfo->metric)) || 5628 ((pinfo->filled & MPATH_INFO_EXPTIME) && 5629 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 5630 pinfo->exptime)) || 5631 ((pinfo->filled & MPATH_INFO_FLAGS) && 5632 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 5633 pinfo->flags)) || 5634 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 5635 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 5636 pinfo->discovery_timeout)) || 5637 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 5638 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 5639 pinfo->discovery_retries))) 5640 goto nla_put_failure; 5641 5642 nla_nest_end(msg, pinfoattr); 5643 5644 genlmsg_end(msg, hdr); 5645 return 0; 5646 5647 nla_put_failure: 5648 genlmsg_cancel(msg, hdr); 5649 return -EMSGSIZE; 5650 } 5651 5652 static int nl80211_dump_mpath(struct sk_buff *skb, 5653 struct netlink_callback *cb) 5654 { 5655 struct mpath_info pinfo; 5656 struct cfg80211_registered_device *rdev; 5657 struct wireless_dev *wdev; 5658 u8 dst[ETH_ALEN]; 5659 u8 next_hop[ETH_ALEN]; 5660 int path_idx = cb->args[2]; 5661 int err; 5662 5663 rtnl_lock(); 5664 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5665 if (err) 5666 goto out_err; 5667 5668 if (!rdev->ops->dump_mpath) { 5669 err = -EOPNOTSUPP; 5670 goto out_err; 5671 } 5672 5673 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5674 err = -EOPNOTSUPP; 5675 goto out_err; 5676 } 5677 5678 while (1) { 5679 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 5680 next_hop, &pinfo); 5681 if (err == -ENOENT) 5682 break; 5683 if (err) 5684 goto out_err; 5685 5686 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5687 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5688 wdev->netdev, dst, next_hop, 5689 &pinfo) < 0) 5690 goto out; 5691 5692 path_idx++; 5693 } 5694 5695 out: 5696 cb->args[2] = path_idx; 5697 err = skb->len; 5698 out_err: 5699 rtnl_unlock(); 5700 return err; 5701 } 5702 5703 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 5704 { 5705 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5706 int err; 5707 struct net_device *dev = info->user_ptr[1]; 5708 struct mpath_info pinfo; 5709 struct sk_buff *msg; 5710 u8 *dst = NULL; 5711 u8 next_hop[ETH_ALEN]; 5712 5713 memset(&pinfo, 0, sizeof(pinfo)); 5714 5715 if (!info->attrs[NL80211_ATTR_MAC]) 5716 return -EINVAL; 5717 5718 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5719 5720 if (!rdev->ops->get_mpath) 5721 return -EOPNOTSUPP; 5722 5723 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5724 return -EOPNOTSUPP; 5725 5726 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 5727 if (err) 5728 return err; 5729 5730 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5731 if (!msg) 5732 return -ENOMEM; 5733 5734 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5735 dev, dst, next_hop, &pinfo) < 0) { 5736 nlmsg_free(msg); 5737 return -ENOBUFS; 5738 } 5739 5740 return genlmsg_reply(msg, info); 5741 } 5742 5743 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 5744 { 5745 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5746 struct net_device *dev = info->user_ptr[1]; 5747 u8 *dst = NULL; 5748 u8 *next_hop = NULL; 5749 5750 if (!info->attrs[NL80211_ATTR_MAC]) 5751 return -EINVAL; 5752 5753 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5754 return -EINVAL; 5755 5756 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5757 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5758 5759 if (!rdev->ops->change_mpath) 5760 return -EOPNOTSUPP; 5761 5762 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5763 return -EOPNOTSUPP; 5764 5765 return rdev_change_mpath(rdev, dev, dst, next_hop); 5766 } 5767 5768 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 5769 { 5770 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5771 struct net_device *dev = info->user_ptr[1]; 5772 u8 *dst = NULL; 5773 u8 *next_hop = NULL; 5774 5775 if (!info->attrs[NL80211_ATTR_MAC]) 5776 return -EINVAL; 5777 5778 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5779 return -EINVAL; 5780 5781 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5782 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5783 5784 if (!rdev->ops->add_mpath) 5785 return -EOPNOTSUPP; 5786 5787 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5788 return -EOPNOTSUPP; 5789 5790 return rdev_add_mpath(rdev, dev, dst, next_hop); 5791 } 5792 5793 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 5794 { 5795 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5796 struct net_device *dev = info->user_ptr[1]; 5797 u8 *dst = NULL; 5798 5799 if (info->attrs[NL80211_ATTR_MAC]) 5800 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5801 5802 if (!rdev->ops->del_mpath) 5803 return -EOPNOTSUPP; 5804 5805 return rdev_del_mpath(rdev, dev, dst); 5806 } 5807 5808 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 5809 { 5810 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5811 int err; 5812 struct net_device *dev = info->user_ptr[1]; 5813 struct mpath_info pinfo; 5814 struct sk_buff *msg; 5815 u8 *dst = NULL; 5816 u8 mpp[ETH_ALEN]; 5817 5818 memset(&pinfo, 0, sizeof(pinfo)); 5819 5820 if (!info->attrs[NL80211_ATTR_MAC]) 5821 return -EINVAL; 5822 5823 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5824 5825 if (!rdev->ops->get_mpp) 5826 return -EOPNOTSUPP; 5827 5828 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5829 return -EOPNOTSUPP; 5830 5831 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 5832 if (err) 5833 return err; 5834 5835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5836 if (!msg) 5837 return -ENOMEM; 5838 5839 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5840 dev, dst, mpp, &pinfo) < 0) { 5841 nlmsg_free(msg); 5842 return -ENOBUFS; 5843 } 5844 5845 return genlmsg_reply(msg, info); 5846 } 5847 5848 static int nl80211_dump_mpp(struct sk_buff *skb, 5849 struct netlink_callback *cb) 5850 { 5851 struct mpath_info pinfo; 5852 struct cfg80211_registered_device *rdev; 5853 struct wireless_dev *wdev; 5854 u8 dst[ETH_ALEN]; 5855 u8 mpp[ETH_ALEN]; 5856 int path_idx = cb->args[2]; 5857 int err; 5858 5859 rtnl_lock(); 5860 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5861 if (err) 5862 goto out_err; 5863 5864 if (!rdev->ops->dump_mpp) { 5865 err = -EOPNOTSUPP; 5866 goto out_err; 5867 } 5868 5869 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5870 err = -EOPNOTSUPP; 5871 goto out_err; 5872 } 5873 5874 while (1) { 5875 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 5876 mpp, &pinfo); 5877 if (err == -ENOENT) 5878 break; 5879 if (err) 5880 goto out_err; 5881 5882 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5883 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5884 wdev->netdev, dst, mpp, 5885 &pinfo) < 0) 5886 goto out; 5887 5888 path_idx++; 5889 } 5890 5891 out: 5892 cb->args[2] = path_idx; 5893 err = skb->len; 5894 out_err: 5895 rtnl_unlock(); 5896 return err; 5897 } 5898 5899 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 5900 { 5901 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5902 struct net_device *dev = info->user_ptr[1]; 5903 struct wireless_dev *wdev = dev->ieee80211_ptr; 5904 struct bss_parameters params; 5905 int err; 5906 5907 memset(¶ms, 0, sizeof(params)); 5908 /* default to not changing parameters */ 5909 params.use_cts_prot = -1; 5910 params.use_short_preamble = -1; 5911 params.use_short_slot_time = -1; 5912 params.ap_isolate = -1; 5913 params.ht_opmode = -1; 5914 params.p2p_ctwindow = -1; 5915 params.p2p_opp_ps = -1; 5916 5917 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 5918 params.use_cts_prot = 5919 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 5920 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 5921 params.use_short_preamble = 5922 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 5923 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 5924 params.use_short_slot_time = 5925 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 5926 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 5927 params.basic_rates = 5928 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5929 params.basic_rates_len = 5930 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5931 } 5932 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 5933 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 5934 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 5935 params.ht_opmode = 5936 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 5937 5938 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5939 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5940 return -EINVAL; 5941 params.p2p_ctwindow = 5942 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5943 if (params.p2p_ctwindow < 0) 5944 return -EINVAL; 5945 if (params.p2p_ctwindow != 0 && 5946 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5947 return -EINVAL; 5948 } 5949 5950 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5951 u8 tmp; 5952 5953 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5954 return -EINVAL; 5955 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5956 if (tmp > 1) 5957 return -EINVAL; 5958 params.p2p_opp_ps = tmp; 5959 if (params.p2p_opp_ps && 5960 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5961 return -EINVAL; 5962 } 5963 5964 if (!rdev->ops->change_bss) 5965 return -EOPNOTSUPP; 5966 5967 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5968 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5969 return -EOPNOTSUPP; 5970 5971 wdev_lock(wdev); 5972 err = rdev_change_bss(rdev, dev, ¶ms); 5973 wdev_unlock(wdev); 5974 5975 return err; 5976 } 5977 5978 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 5979 { 5980 char *data = NULL; 5981 bool is_indoor; 5982 enum nl80211_user_reg_hint_type user_reg_hint_type; 5983 u32 owner_nlportid; 5984 5985 /* 5986 * You should only get this when cfg80211 hasn't yet initialized 5987 * completely when built-in to the kernel right between the time 5988 * window between nl80211_init() and regulatory_init(), if that is 5989 * even possible. 5990 */ 5991 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 5992 return -EINPROGRESS; 5993 5994 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 5995 user_reg_hint_type = 5996 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 5997 else 5998 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 5999 6000 switch (user_reg_hint_type) { 6001 case NL80211_USER_REG_HINT_USER: 6002 case NL80211_USER_REG_HINT_CELL_BASE: 6003 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6004 return -EINVAL; 6005 6006 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6007 return regulatory_hint_user(data, user_reg_hint_type); 6008 case NL80211_USER_REG_HINT_INDOOR: 6009 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 6010 owner_nlportid = info->snd_portid; 6011 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 6012 } else { 6013 owner_nlportid = 0; 6014 is_indoor = true; 6015 } 6016 6017 return regulatory_hint_indoor(is_indoor, owner_nlportid); 6018 default: 6019 return -EINVAL; 6020 } 6021 } 6022 6023 static int nl80211_reload_regdb(struct sk_buff *skb, struct genl_info *info) 6024 { 6025 return reg_reload_regdb(); 6026 } 6027 6028 static int nl80211_get_mesh_config(struct sk_buff *skb, 6029 struct genl_info *info) 6030 { 6031 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6032 struct net_device *dev = info->user_ptr[1]; 6033 struct wireless_dev *wdev = dev->ieee80211_ptr; 6034 struct mesh_config cur_params; 6035 int err = 0; 6036 void *hdr; 6037 struct nlattr *pinfoattr; 6038 struct sk_buff *msg; 6039 6040 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6041 return -EOPNOTSUPP; 6042 6043 if (!rdev->ops->get_mesh_config) 6044 return -EOPNOTSUPP; 6045 6046 wdev_lock(wdev); 6047 /* If not connected, get default parameters */ 6048 if (!wdev->mesh_id_len) 6049 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 6050 else 6051 err = rdev_get_mesh_config(rdev, dev, &cur_params); 6052 wdev_unlock(wdev); 6053 6054 if (err) 6055 return err; 6056 6057 /* Draw up a netlink message to send back */ 6058 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6059 if (!msg) 6060 return -ENOMEM; 6061 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6062 NL80211_CMD_GET_MESH_CONFIG); 6063 if (!hdr) 6064 goto out; 6065 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 6066 if (!pinfoattr) 6067 goto nla_put_failure; 6068 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 6069 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 6070 cur_params.dot11MeshRetryTimeout) || 6071 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 6072 cur_params.dot11MeshConfirmTimeout) || 6073 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 6074 cur_params.dot11MeshHoldingTimeout) || 6075 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 6076 cur_params.dot11MeshMaxPeerLinks) || 6077 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 6078 cur_params.dot11MeshMaxRetries) || 6079 nla_put_u8(msg, NL80211_MESHCONF_TTL, 6080 cur_params.dot11MeshTTL) || 6081 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 6082 cur_params.element_ttl) || 6083 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 6084 cur_params.auto_open_plinks) || 6085 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 6086 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 6087 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 6088 cur_params.dot11MeshHWMPmaxPREQretries) || 6089 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 6090 cur_params.path_refresh_time) || 6091 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 6092 cur_params.min_discovery_timeout) || 6093 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 6094 cur_params.dot11MeshHWMPactivePathTimeout) || 6095 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 6096 cur_params.dot11MeshHWMPpreqMinInterval) || 6097 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 6098 cur_params.dot11MeshHWMPperrMinInterval) || 6099 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 6100 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 6101 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 6102 cur_params.dot11MeshHWMPRootMode) || 6103 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 6104 cur_params.dot11MeshHWMPRannInterval) || 6105 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 6106 cur_params.dot11MeshGateAnnouncementProtocol) || 6107 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 6108 cur_params.dot11MeshForwarding) || 6109 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 6110 cur_params.rssi_threshold) || 6111 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 6112 cur_params.ht_opmode) || 6113 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6114 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 6115 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6116 cur_params.dot11MeshHWMProotInterval) || 6117 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6118 cur_params.dot11MeshHWMPconfirmationInterval) || 6119 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 6120 cur_params.power_mode) || 6121 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 6122 cur_params.dot11MeshAwakeWindowDuration) || 6123 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 6124 cur_params.plink_timeout)) 6125 goto nla_put_failure; 6126 nla_nest_end(msg, pinfoattr); 6127 genlmsg_end(msg, hdr); 6128 return genlmsg_reply(msg, info); 6129 6130 nla_put_failure: 6131 out: 6132 nlmsg_free(msg); 6133 return -ENOBUFS; 6134 } 6135 6136 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 6137 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 6138 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 6139 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 6140 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 6141 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 6142 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 6143 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 6144 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 6145 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 6146 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 6147 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 6148 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 6149 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 6150 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 6151 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 6152 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 6153 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 6154 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 6155 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 6156 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 6157 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 6158 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 6159 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 6160 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 6161 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 6162 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 6163 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 6164 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 6165 }; 6166 6167 static const struct nla_policy 6168 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 6169 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 6170 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 6171 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 6172 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 6173 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 6174 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 6175 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 6176 .len = IEEE80211_MAX_DATA_LEN }, 6177 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 6178 }; 6179 6180 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out) 6181 { 6182 u8 val = nla_get_u8(nla); 6183 if (val < min || val > max) 6184 return -EINVAL; 6185 *out = val; 6186 return 0; 6187 } 6188 6189 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out) 6190 { 6191 u8 val = nla_get_u8(nla); 6192 if (val < min || val > max) 6193 return -EINVAL; 6194 *out = val; 6195 return 0; 6196 } 6197 6198 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out) 6199 { 6200 u16 val = nla_get_u16(nla); 6201 if (val < min || val > max) 6202 return -EINVAL; 6203 *out = val; 6204 return 0; 6205 } 6206 6207 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out) 6208 { 6209 u32 val = nla_get_u32(nla); 6210 if (val < min || val > max) 6211 return -EINVAL; 6212 *out = val; 6213 return 0; 6214 } 6215 6216 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out) 6217 { 6218 s32 val = nla_get_s32(nla); 6219 if (val < min || val > max) 6220 return -EINVAL; 6221 *out = val; 6222 return 0; 6223 } 6224 6225 static int nl80211_check_power_mode(const struct nlattr *nla, 6226 enum nl80211_mesh_power_mode min, 6227 enum nl80211_mesh_power_mode max, 6228 enum nl80211_mesh_power_mode *out) 6229 { 6230 u32 val = nla_get_u32(nla); 6231 if (val < min || val > max) 6232 return -EINVAL; 6233 *out = val; 6234 return 0; 6235 } 6236 6237 static int nl80211_parse_mesh_config(struct genl_info *info, 6238 struct mesh_config *cfg, 6239 u32 *mask_out) 6240 { 6241 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 6242 u32 mask = 0; 6243 u16 ht_opmode; 6244 6245 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 6246 do { \ 6247 if (tb[attr]) { \ 6248 if (fn(tb[attr], min, max, &cfg->param)) \ 6249 return -EINVAL; \ 6250 mask |= (1 << (attr - 1)); \ 6251 } \ 6252 } while (0) 6253 6254 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 6255 return -EINVAL; 6256 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 6257 info->attrs[NL80211_ATTR_MESH_CONFIG], 6258 nl80211_meshconf_params_policy, info->extack)) 6259 return -EINVAL; 6260 6261 /* This makes sure that there aren't more than 32 mesh config 6262 * parameters (otherwise our bitfield scheme would not work.) */ 6263 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 6264 6265 /* Fill in the params struct */ 6266 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 6267 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 6268 nl80211_check_u16); 6269 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 6270 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 6271 nl80211_check_u16); 6272 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 6273 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 6274 nl80211_check_u16); 6275 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 6276 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 6277 nl80211_check_u16); 6278 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 6279 mask, NL80211_MESHCONF_MAX_RETRIES, 6280 nl80211_check_u8); 6281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 6282 mask, NL80211_MESHCONF_TTL, nl80211_check_u8); 6283 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 6284 mask, NL80211_MESHCONF_ELEMENT_TTL, 6285 nl80211_check_u8); 6286 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 6287 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 6288 nl80211_check_bool); 6289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 6290 1, 255, mask, 6291 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 6292 nl80211_check_u32); 6293 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 6294 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 6295 nl80211_check_u8); 6296 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 6297 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 6298 nl80211_check_u32); 6299 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 6300 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 6301 nl80211_check_u16); 6302 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 6303 1, 65535, mask, 6304 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 6305 nl80211_check_u32); 6306 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 6307 1, 65535, mask, 6308 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 6309 nl80211_check_u16); 6310 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 6311 1, 65535, mask, 6312 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 6313 nl80211_check_u16); 6314 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6315 dot11MeshHWMPnetDiameterTraversalTime, 6316 1, 65535, mask, 6317 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 6318 nl80211_check_u16); 6319 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 6320 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 6321 nl80211_check_u8); 6322 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 6323 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 6324 nl80211_check_u16); 6325 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6326 dot11MeshGateAnnouncementProtocol, 0, 1, 6327 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 6328 nl80211_check_bool); 6329 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 6330 mask, NL80211_MESHCONF_FORWARDING, 6331 nl80211_check_bool); 6332 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 6333 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 6334 nl80211_check_s32); 6335 /* 6336 * Check HT operation mode based on 6337 * IEEE 802.11-2016 9.4.2.57 HT Operation element. 6338 */ 6339 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 6340 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 6341 6342 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 6343 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 6344 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6345 return -EINVAL; 6346 6347 /* NON_HT_STA bit is reserved, but some programs set it */ 6348 ht_opmode &= ~IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT; 6349 6350 cfg->ht_opmode = ht_opmode; 6351 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 6352 } 6353 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 6354 1, 65535, mask, 6355 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6356 nl80211_check_u32); 6357 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 6358 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6359 nl80211_check_u16); 6360 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6361 dot11MeshHWMPconfirmationInterval, 6362 1, 65535, mask, 6363 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6364 nl80211_check_u16); 6365 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 6366 NL80211_MESH_POWER_ACTIVE, 6367 NL80211_MESH_POWER_MAX, 6368 mask, NL80211_MESHCONF_POWER_MODE, 6369 nl80211_check_power_mode); 6370 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 6371 0, 65535, mask, 6372 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16); 6373 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 6374 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 6375 nl80211_check_u32); 6376 if (mask_out) 6377 *mask_out = mask; 6378 6379 return 0; 6380 6381 #undef FILL_IN_MESH_PARAM_IF_SET 6382 } 6383 6384 static int nl80211_parse_mesh_setup(struct genl_info *info, 6385 struct mesh_setup *setup) 6386 { 6387 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6388 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 6389 6390 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 6391 return -EINVAL; 6392 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 6393 info->attrs[NL80211_ATTR_MESH_SETUP], 6394 nl80211_mesh_setup_params_policy, info->extack)) 6395 return -EINVAL; 6396 6397 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 6398 setup->sync_method = 6399 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 6400 IEEE80211_SYNC_METHOD_VENDOR : 6401 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 6402 6403 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 6404 setup->path_sel_proto = 6405 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 6406 IEEE80211_PATH_PROTOCOL_VENDOR : 6407 IEEE80211_PATH_PROTOCOL_HWMP; 6408 6409 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 6410 setup->path_metric = 6411 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 6412 IEEE80211_PATH_METRIC_VENDOR : 6413 IEEE80211_PATH_METRIC_AIRTIME; 6414 6415 if (tb[NL80211_MESH_SETUP_IE]) { 6416 struct nlattr *ieattr = 6417 tb[NL80211_MESH_SETUP_IE]; 6418 if (!is_valid_ie_attr(ieattr)) 6419 return -EINVAL; 6420 setup->ie = nla_data(ieattr); 6421 setup->ie_len = nla_len(ieattr); 6422 } 6423 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 6424 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 6425 return -EINVAL; 6426 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 6427 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 6428 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 6429 if (setup->is_secure) 6430 setup->user_mpm = true; 6431 6432 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 6433 if (!setup->user_mpm) 6434 return -EINVAL; 6435 setup->auth_id = 6436 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 6437 } 6438 6439 return 0; 6440 } 6441 6442 static int nl80211_update_mesh_config(struct sk_buff *skb, 6443 struct genl_info *info) 6444 { 6445 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6446 struct net_device *dev = info->user_ptr[1]; 6447 struct wireless_dev *wdev = dev->ieee80211_ptr; 6448 struct mesh_config cfg; 6449 u32 mask; 6450 int err; 6451 6452 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6453 return -EOPNOTSUPP; 6454 6455 if (!rdev->ops->update_mesh_config) 6456 return -EOPNOTSUPP; 6457 6458 err = nl80211_parse_mesh_config(info, &cfg, &mask); 6459 if (err) 6460 return err; 6461 6462 wdev_lock(wdev); 6463 if (!wdev->mesh_id_len) 6464 err = -ENOLINK; 6465 6466 if (!err) 6467 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 6468 6469 wdev_unlock(wdev); 6470 6471 return err; 6472 } 6473 6474 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 6475 struct sk_buff *msg) 6476 { 6477 struct nlattr *nl_reg_rules; 6478 unsigned int i; 6479 6480 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 6481 (regdom->dfs_region && 6482 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 6483 goto nla_put_failure; 6484 6485 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 6486 if (!nl_reg_rules) 6487 goto nla_put_failure; 6488 6489 for (i = 0; i < regdom->n_reg_rules; i++) { 6490 struct nlattr *nl_reg_rule; 6491 const struct ieee80211_reg_rule *reg_rule; 6492 const struct ieee80211_freq_range *freq_range; 6493 const struct ieee80211_power_rule *power_rule; 6494 unsigned int max_bandwidth_khz; 6495 6496 reg_rule = ®dom->reg_rules[i]; 6497 freq_range = ®_rule->freq_range; 6498 power_rule = ®_rule->power_rule; 6499 6500 nl_reg_rule = nla_nest_start(msg, i); 6501 if (!nl_reg_rule) 6502 goto nla_put_failure; 6503 6504 max_bandwidth_khz = freq_range->max_bandwidth_khz; 6505 if (!max_bandwidth_khz) 6506 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 6507 reg_rule); 6508 6509 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 6510 reg_rule->flags) || 6511 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 6512 freq_range->start_freq_khz) || 6513 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 6514 freq_range->end_freq_khz) || 6515 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 6516 max_bandwidth_khz) || 6517 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 6518 power_rule->max_antenna_gain) || 6519 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 6520 power_rule->max_eirp) || 6521 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 6522 reg_rule->dfs_cac_ms)) 6523 goto nla_put_failure; 6524 6525 nla_nest_end(msg, nl_reg_rule); 6526 } 6527 6528 nla_nest_end(msg, nl_reg_rules); 6529 return 0; 6530 6531 nla_put_failure: 6532 return -EMSGSIZE; 6533 } 6534 6535 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 6536 { 6537 const struct ieee80211_regdomain *regdom = NULL; 6538 struct cfg80211_registered_device *rdev; 6539 struct wiphy *wiphy = NULL; 6540 struct sk_buff *msg; 6541 void *hdr; 6542 6543 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6544 if (!msg) 6545 return -ENOBUFS; 6546 6547 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6548 NL80211_CMD_GET_REG); 6549 if (!hdr) 6550 goto put_failure; 6551 6552 if (info->attrs[NL80211_ATTR_WIPHY]) { 6553 bool self_managed; 6554 6555 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 6556 if (IS_ERR(rdev)) { 6557 nlmsg_free(msg); 6558 return PTR_ERR(rdev); 6559 } 6560 6561 wiphy = &rdev->wiphy; 6562 self_managed = wiphy->regulatory_flags & 6563 REGULATORY_WIPHY_SELF_MANAGED; 6564 regdom = get_wiphy_regdom(wiphy); 6565 6566 /* a self-managed-reg device must have a private regdom */ 6567 if (WARN_ON(!regdom && self_managed)) { 6568 nlmsg_free(msg); 6569 return -EINVAL; 6570 } 6571 6572 if (regdom && 6573 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6574 goto nla_put_failure; 6575 } 6576 6577 if (!wiphy && reg_last_request_cell_base() && 6578 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6579 NL80211_USER_REG_HINT_CELL_BASE)) 6580 goto nla_put_failure; 6581 6582 rcu_read_lock(); 6583 6584 if (!regdom) 6585 regdom = rcu_dereference(cfg80211_regdomain); 6586 6587 if (nl80211_put_regdom(regdom, msg)) 6588 goto nla_put_failure_rcu; 6589 6590 rcu_read_unlock(); 6591 6592 genlmsg_end(msg, hdr); 6593 return genlmsg_reply(msg, info); 6594 6595 nla_put_failure_rcu: 6596 rcu_read_unlock(); 6597 nla_put_failure: 6598 put_failure: 6599 nlmsg_free(msg); 6600 return -EMSGSIZE; 6601 } 6602 6603 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 6604 u32 seq, int flags, struct wiphy *wiphy, 6605 const struct ieee80211_regdomain *regdom) 6606 { 6607 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6608 NL80211_CMD_GET_REG); 6609 6610 if (!hdr) 6611 return -1; 6612 6613 genl_dump_check_consistent(cb, hdr); 6614 6615 if (nl80211_put_regdom(regdom, msg)) 6616 goto nla_put_failure; 6617 6618 if (!wiphy && reg_last_request_cell_base() && 6619 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6620 NL80211_USER_REG_HINT_CELL_BASE)) 6621 goto nla_put_failure; 6622 6623 if (wiphy && 6624 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6625 goto nla_put_failure; 6626 6627 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 6628 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 6629 goto nla_put_failure; 6630 6631 genlmsg_end(msg, hdr); 6632 return 0; 6633 6634 nla_put_failure: 6635 genlmsg_cancel(msg, hdr); 6636 return -EMSGSIZE; 6637 } 6638 6639 static int nl80211_get_reg_dump(struct sk_buff *skb, 6640 struct netlink_callback *cb) 6641 { 6642 const struct ieee80211_regdomain *regdom = NULL; 6643 struct cfg80211_registered_device *rdev; 6644 int err, reg_idx, start = cb->args[2]; 6645 6646 rtnl_lock(); 6647 6648 if (cfg80211_regdomain && start == 0) { 6649 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6650 NLM_F_MULTI, NULL, 6651 rtnl_dereference(cfg80211_regdomain)); 6652 if (err < 0) 6653 goto out_err; 6654 } 6655 6656 /* the global regdom is idx 0 */ 6657 reg_idx = 1; 6658 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 6659 regdom = get_wiphy_regdom(&rdev->wiphy); 6660 if (!regdom) 6661 continue; 6662 6663 if (++reg_idx <= start) 6664 continue; 6665 6666 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6667 NLM_F_MULTI, &rdev->wiphy, regdom); 6668 if (err < 0) { 6669 reg_idx--; 6670 break; 6671 } 6672 } 6673 6674 cb->args[2] = reg_idx; 6675 err = skb->len; 6676 out_err: 6677 rtnl_unlock(); 6678 return err; 6679 } 6680 6681 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 6682 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 6683 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 6684 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 6685 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 6686 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 6687 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 6688 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 6689 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 6690 }; 6691 6692 static int parse_reg_rule(struct nlattr *tb[], 6693 struct ieee80211_reg_rule *reg_rule) 6694 { 6695 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 6696 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 6697 6698 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 6699 return -EINVAL; 6700 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 6701 return -EINVAL; 6702 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 6703 return -EINVAL; 6704 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 6705 return -EINVAL; 6706 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 6707 return -EINVAL; 6708 6709 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 6710 6711 freq_range->start_freq_khz = 6712 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 6713 freq_range->end_freq_khz = 6714 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 6715 freq_range->max_bandwidth_khz = 6716 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 6717 6718 power_rule->max_eirp = 6719 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 6720 6721 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 6722 power_rule->max_antenna_gain = 6723 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 6724 6725 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 6726 reg_rule->dfs_cac_ms = 6727 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 6728 6729 return 0; 6730 } 6731 6732 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 6733 { 6734 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 6735 struct nlattr *nl_reg_rule; 6736 char *alpha2; 6737 int rem_reg_rules, r; 6738 u32 num_rules = 0, rule_idx = 0, size_of_regd; 6739 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 6740 struct ieee80211_regdomain *rd; 6741 6742 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6743 return -EINVAL; 6744 6745 if (!info->attrs[NL80211_ATTR_REG_RULES]) 6746 return -EINVAL; 6747 6748 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6749 6750 if (info->attrs[NL80211_ATTR_DFS_REGION]) 6751 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 6752 6753 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6754 rem_reg_rules) { 6755 num_rules++; 6756 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 6757 return -EINVAL; 6758 } 6759 6760 if (!reg_is_valid_request(alpha2)) 6761 return -EINVAL; 6762 6763 size_of_regd = sizeof(struct ieee80211_regdomain) + 6764 num_rules * sizeof(struct ieee80211_reg_rule); 6765 6766 rd = kzalloc(size_of_regd, GFP_KERNEL); 6767 if (!rd) 6768 return -ENOMEM; 6769 6770 rd->n_reg_rules = num_rules; 6771 rd->alpha2[0] = alpha2[0]; 6772 rd->alpha2[1] = alpha2[1]; 6773 6774 /* 6775 * Disable DFS master mode if the DFS region was 6776 * not supported or known on this kernel. 6777 */ 6778 if (reg_supported_dfs_region(dfs_region)) 6779 rd->dfs_region = dfs_region; 6780 6781 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6782 rem_reg_rules) { 6783 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX, 6784 nl_reg_rule, reg_rule_policy, 6785 info->extack); 6786 if (r) 6787 goto bad_reg; 6788 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 6789 if (r) 6790 goto bad_reg; 6791 6792 rule_idx++; 6793 6794 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 6795 r = -EINVAL; 6796 goto bad_reg; 6797 } 6798 } 6799 6800 /* set_regdom takes ownership of rd */ 6801 return set_regdom(rd, REGD_SOURCE_CRDA); 6802 bad_reg: 6803 kfree(rd); 6804 return r; 6805 } 6806 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 6807 6808 static int validate_scan_freqs(struct nlattr *freqs) 6809 { 6810 struct nlattr *attr1, *attr2; 6811 int n_channels = 0, tmp1, tmp2; 6812 6813 nla_for_each_nested(attr1, freqs, tmp1) 6814 if (nla_len(attr1) != sizeof(u32)) 6815 return 0; 6816 6817 nla_for_each_nested(attr1, freqs, tmp1) { 6818 n_channels++; 6819 /* 6820 * Some hardware has a limited channel list for 6821 * scanning, and it is pretty much nonsensical 6822 * to scan for a channel twice, so disallow that 6823 * and don't require drivers to check that the 6824 * channel list they get isn't longer than what 6825 * they can scan, as long as they can scan all 6826 * the channels they registered at once. 6827 */ 6828 nla_for_each_nested(attr2, freqs, tmp2) 6829 if (attr1 != attr2 && 6830 nla_get_u32(attr1) == nla_get_u32(attr2)) 6831 return 0; 6832 } 6833 6834 return n_channels; 6835 } 6836 6837 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 6838 { 6839 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 6840 } 6841 6842 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 6843 struct cfg80211_bss_selection *bss_select) 6844 { 6845 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 6846 struct nlattr *nest; 6847 int err; 6848 bool found = false; 6849 int i; 6850 6851 /* only process one nested attribute */ 6852 nest = nla_data(nla); 6853 if (!nla_ok(nest, nla_len(nest))) 6854 return -EINVAL; 6855 6856 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest, 6857 nl80211_bss_select_policy, NULL); 6858 if (err) 6859 return err; 6860 6861 /* only one attribute may be given */ 6862 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 6863 if (attr[i]) { 6864 if (found) 6865 return -EINVAL; 6866 found = true; 6867 } 6868 } 6869 6870 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 6871 6872 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 6873 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 6874 6875 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 6876 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 6877 bss_select->param.band_pref = 6878 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6879 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6880 return -EINVAL; 6881 } 6882 6883 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6884 struct nl80211_bss_select_rssi_adjust *adj_param; 6885 6886 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6887 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6888 bss_select->param.adjust.band = adj_param->band; 6889 bss_select->param.adjust.delta = adj_param->delta; 6890 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6891 return -EINVAL; 6892 } 6893 6894 /* user-space did not provide behaviour attribute */ 6895 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6896 return -EINVAL; 6897 6898 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6899 return -EINVAL; 6900 6901 return 0; 6902 } 6903 6904 static int nl80211_parse_random_mac(struct nlattr **attrs, 6905 u8 *mac_addr, u8 *mac_addr_mask) 6906 { 6907 int i; 6908 6909 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6910 eth_zero_addr(mac_addr); 6911 eth_zero_addr(mac_addr_mask); 6912 mac_addr[0] = 0x2; 6913 mac_addr_mask[0] = 0x3; 6914 6915 return 0; 6916 } 6917 6918 /* need both or none */ 6919 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6920 return -EINVAL; 6921 6922 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6923 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6924 6925 /* don't allow or configure an mcast address */ 6926 if (!is_multicast_ether_addr(mac_addr_mask) || 6927 is_multicast_ether_addr(mac_addr)) 6928 return -EINVAL; 6929 6930 /* 6931 * allow users to pass a MAC address that has bits set outside 6932 * of the mask, but don't bother drivers with having to deal 6933 * with such bits 6934 */ 6935 for (i = 0; i < ETH_ALEN; i++) 6936 mac_addr[i] &= mac_addr_mask[i]; 6937 6938 return 0; 6939 } 6940 6941 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev) 6942 { 6943 ASSERT_WDEV_LOCK(wdev); 6944 6945 if (!cfg80211_beaconing_iface_active(wdev)) 6946 return true; 6947 6948 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR)) 6949 return true; 6950 6951 return regulatory_pre_cac_allowed(wdev->wiphy); 6952 } 6953 6954 static bool nl80211_check_scan_feat(struct wiphy *wiphy, u32 flags, u32 flag, 6955 enum nl80211_ext_feature_index feat) 6956 { 6957 if (!(flags & flag)) 6958 return true; 6959 if (wiphy_ext_feature_isset(wiphy, feat)) 6960 return true; 6961 return false; 6962 } 6963 6964 static int 6965 nl80211_check_scan_flags(struct wiphy *wiphy, struct wireless_dev *wdev, 6966 void *request, struct nlattr **attrs, 6967 bool is_sched_scan) 6968 { 6969 u8 *mac_addr, *mac_addr_mask; 6970 u32 *flags; 6971 enum nl80211_feature_flags randomness_flag; 6972 6973 if (!attrs[NL80211_ATTR_SCAN_FLAGS]) 6974 return 0; 6975 6976 if (is_sched_scan) { 6977 struct cfg80211_sched_scan_request *req = request; 6978 6979 randomness_flag = wdev ? 6980 NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR : 6981 NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6982 flags = &req->flags; 6983 mac_addr = req->mac_addr; 6984 mac_addr_mask = req->mac_addr_mask; 6985 } else { 6986 struct cfg80211_scan_request *req = request; 6987 6988 randomness_flag = NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR; 6989 flags = &req->flags; 6990 mac_addr = req->mac_addr; 6991 mac_addr_mask = req->mac_addr_mask; 6992 } 6993 6994 *flags = nla_get_u32(attrs[NL80211_ATTR_SCAN_FLAGS]); 6995 6996 if (((*flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6997 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) || 6998 !nl80211_check_scan_feat(wiphy, *flags, 6999 NL80211_SCAN_FLAG_LOW_SPAN, 7000 NL80211_EXT_FEATURE_LOW_SPAN_SCAN) || 7001 !nl80211_check_scan_feat(wiphy, *flags, 7002 NL80211_SCAN_FLAG_LOW_POWER, 7003 NL80211_EXT_FEATURE_LOW_POWER_SCAN) || 7004 !nl80211_check_scan_feat(wiphy, *flags, 7005 NL80211_SCAN_FLAG_HIGH_ACCURACY, 7006 NL80211_EXT_FEATURE_HIGH_ACCURACY_SCAN) || 7007 !nl80211_check_scan_feat(wiphy, *flags, 7008 NL80211_SCAN_FLAG_FILS_MAX_CHANNEL_TIME, 7009 NL80211_EXT_FEATURE_FILS_MAX_CHANNEL_TIME) || 7010 !nl80211_check_scan_feat(wiphy, *flags, 7011 NL80211_SCAN_FLAG_ACCEPT_BCAST_PROBE_RESP, 7012 NL80211_EXT_FEATURE_ACCEPT_BCAST_PROBE_RESP) || 7013 !nl80211_check_scan_feat(wiphy, *flags, 7014 NL80211_SCAN_FLAG_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION, 7015 NL80211_EXT_FEATURE_OCE_PROBE_REQ_DEFERRAL_SUPPRESSION) || 7016 !nl80211_check_scan_feat(wiphy, *flags, 7017 NL80211_SCAN_FLAG_OCE_PROBE_REQ_HIGH_TX_RATE, 7018 NL80211_EXT_FEATURE_OCE_PROBE_REQ_HIGH_TX_RATE) || 7019 !nl80211_check_scan_feat(wiphy, *flags, 7020 NL80211_SCAN_FLAG_RANDOM_SN, 7021 NL80211_EXT_FEATURE_SCAN_RANDOM_SN) || 7022 !nl80211_check_scan_feat(wiphy, *flags, 7023 NL80211_SCAN_FLAG_MIN_PREQ_CONTENT, 7024 NL80211_EXT_FEATURE_SCAN_MIN_PREQ_CONTENT)) 7025 return -EOPNOTSUPP; 7026 7027 if (*flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 7028 int err; 7029 7030 if (!(wiphy->features & randomness_flag) || 7031 (wdev && wdev->current_bss)) 7032 return -EOPNOTSUPP; 7033 7034 err = nl80211_parse_random_mac(attrs, mac_addr, mac_addr_mask); 7035 if (err) 7036 return err; 7037 } 7038 7039 return 0; 7040 } 7041 7042 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 7043 { 7044 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7045 struct wireless_dev *wdev = info->user_ptr[1]; 7046 struct cfg80211_scan_request *request; 7047 struct nlattr *attr; 7048 struct wiphy *wiphy; 7049 int err, tmp, n_ssids = 0, n_channels, i; 7050 size_t ie_len; 7051 7052 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7053 return -EINVAL; 7054 7055 wiphy = &rdev->wiphy; 7056 7057 if (wdev->iftype == NL80211_IFTYPE_NAN) 7058 return -EOPNOTSUPP; 7059 7060 if (!rdev->ops->scan) 7061 return -EOPNOTSUPP; 7062 7063 if (rdev->scan_req || rdev->scan_msg) { 7064 err = -EBUSY; 7065 goto unlock; 7066 } 7067 7068 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7069 n_channels = validate_scan_freqs( 7070 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7071 if (!n_channels) { 7072 err = -EINVAL; 7073 goto unlock; 7074 } 7075 } else { 7076 n_channels = ieee80211_get_num_supported_channels(wiphy); 7077 } 7078 7079 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 7080 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 7081 n_ssids++; 7082 7083 if (n_ssids > wiphy->max_scan_ssids) { 7084 err = -EINVAL; 7085 goto unlock; 7086 } 7087 7088 if (info->attrs[NL80211_ATTR_IE]) 7089 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7090 else 7091 ie_len = 0; 7092 7093 if (ie_len > wiphy->max_scan_ie_len) { 7094 err = -EINVAL; 7095 goto unlock; 7096 } 7097 7098 request = kzalloc(sizeof(*request) 7099 + sizeof(*request->ssids) * n_ssids 7100 + sizeof(*request->channels) * n_channels 7101 + ie_len, GFP_KERNEL); 7102 if (!request) { 7103 err = -ENOMEM; 7104 goto unlock; 7105 } 7106 7107 if (n_ssids) 7108 request->ssids = (void *)&request->channels[n_channels]; 7109 request->n_ssids = n_ssids; 7110 if (ie_len) { 7111 if (n_ssids) 7112 request->ie = (void *)(request->ssids + n_ssids); 7113 else 7114 request->ie = (void *)(request->channels + n_channels); 7115 } 7116 7117 i = 0; 7118 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7119 /* user specified, bail out if channel not found */ 7120 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 7121 struct ieee80211_channel *chan; 7122 7123 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7124 7125 if (!chan) { 7126 err = -EINVAL; 7127 goto out_free; 7128 } 7129 7130 /* ignore disabled channels */ 7131 if (chan->flags & IEEE80211_CHAN_DISABLED) 7132 continue; 7133 7134 request->channels[i] = chan; 7135 i++; 7136 } 7137 } else { 7138 enum nl80211_band band; 7139 7140 /* all channels */ 7141 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7142 int j; 7143 7144 if (!wiphy->bands[band]) 7145 continue; 7146 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7147 struct ieee80211_channel *chan; 7148 7149 chan = &wiphy->bands[band]->channels[j]; 7150 7151 if (chan->flags & IEEE80211_CHAN_DISABLED) 7152 continue; 7153 7154 request->channels[i] = chan; 7155 i++; 7156 } 7157 } 7158 } 7159 7160 if (!i) { 7161 err = -EINVAL; 7162 goto out_free; 7163 } 7164 7165 request->n_channels = i; 7166 7167 wdev_lock(wdev); 7168 if (!cfg80211_off_channel_oper_allowed(wdev)) { 7169 struct ieee80211_channel *chan; 7170 7171 if (request->n_channels != 1) { 7172 wdev_unlock(wdev); 7173 err = -EBUSY; 7174 goto out_free; 7175 } 7176 7177 chan = request->channels[0]; 7178 if (chan->center_freq != wdev->chandef.chan->center_freq) { 7179 wdev_unlock(wdev); 7180 err = -EBUSY; 7181 goto out_free; 7182 } 7183 } 7184 wdev_unlock(wdev); 7185 7186 i = 0; 7187 if (n_ssids) { 7188 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 7189 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7190 err = -EINVAL; 7191 goto out_free; 7192 } 7193 request->ssids[i].ssid_len = nla_len(attr); 7194 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 7195 i++; 7196 } 7197 } 7198 7199 if (info->attrs[NL80211_ATTR_IE]) { 7200 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7201 memcpy((void *)request->ie, 7202 nla_data(info->attrs[NL80211_ATTR_IE]), 7203 request->ie_len); 7204 } 7205 7206 for (i = 0; i < NUM_NL80211_BANDS; i++) 7207 if (wiphy->bands[i]) 7208 request->rates[i] = 7209 (1 << wiphy->bands[i]->n_bitrates) - 1; 7210 7211 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 7212 nla_for_each_nested(attr, 7213 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 7214 tmp) { 7215 enum nl80211_band band = nla_type(attr); 7216 7217 if (band < 0 || band >= NUM_NL80211_BANDS) { 7218 err = -EINVAL; 7219 goto out_free; 7220 } 7221 7222 if (!wiphy->bands[band]) 7223 continue; 7224 7225 err = ieee80211_get_ratemask(wiphy->bands[band], 7226 nla_data(attr), 7227 nla_len(attr), 7228 &request->rates[band]); 7229 if (err) 7230 goto out_free; 7231 } 7232 } 7233 7234 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 7235 if (!wiphy_ext_feature_isset(wiphy, 7236 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 7237 err = -EOPNOTSUPP; 7238 goto out_free; 7239 } 7240 7241 request->duration = 7242 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 7243 request->duration_mandatory = 7244 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 7245 } 7246 7247 err = nl80211_check_scan_flags(wiphy, wdev, request, info->attrs, 7248 false); 7249 if (err) 7250 goto out_free; 7251 7252 request->no_cck = 7253 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 7254 7255 /* Initial implementation used NL80211_ATTR_MAC to set the specific 7256 * BSSID to scan for. This was problematic because that same attribute 7257 * was already used for another purpose (local random MAC address). The 7258 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 7259 * compatibility with older userspace components, also use the 7260 * NL80211_ATTR_MAC value here if it can be determined to be used for 7261 * the specific BSSID use case instead of the random MAC address 7262 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 7263 */ 7264 if (info->attrs[NL80211_ATTR_BSSID]) 7265 memcpy(request->bssid, 7266 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 7267 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 7268 info->attrs[NL80211_ATTR_MAC]) 7269 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 7270 ETH_ALEN); 7271 else 7272 eth_broadcast_addr(request->bssid); 7273 7274 request->wdev = wdev; 7275 request->wiphy = &rdev->wiphy; 7276 request->scan_start = jiffies; 7277 7278 rdev->scan_req = request; 7279 err = rdev_scan(rdev, request); 7280 7281 if (!err) { 7282 nl80211_send_scan_start(rdev, wdev); 7283 if (wdev->netdev) 7284 dev_hold(wdev->netdev); 7285 } else { 7286 out_free: 7287 rdev->scan_req = NULL; 7288 kfree(request); 7289 } 7290 7291 unlock: 7292 return err; 7293 } 7294 7295 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 7296 { 7297 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7298 struct wireless_dev *wdev = info->user_ptr[1]; 7299 7300 if (!rdev->ops->abort_scan) 7301 return -EOPNOTSUPP; 7302 7303 if (rdev->scan_msg) 7304 return 0; 7305 7306 if (!rdev->scan_req) 7307 return -ENOENT; 7308 7309 rdev_abort_scan(rdev, wdev); 7310 return 0; 7311 } 7312 7313 static int 7314 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 7315 struct cfg80211_sched_scan_request *request, 7316 struct nlattr **attrs) 7317 { 7318 int tmp, err, i = 0; 7319 struct nlattr *attr; 7320 7321 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7322 u32 interval; 7323 7324 /* 7325 * If scan plans are not specified, 7326 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 7327 * case one scan plan will be set with the specified scan 7328 * interval and infinite number of iterations. 7329 */ 7330 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 7331 if (!interval) 7332 return -EINVAL; 7333 7334 request->scan_plans[0].interval = 7335 DIV_ROUND_UP(interval, MSEC_PER_SEC); 7336 if (!request->scan_plans[0].interval) 7337 return -EINVAL; 7338 7339 if (request->scan_plans[0].interval > 7340 wiphy->max_sched_scan_plan_interval) 7341 request->scan_plans[0].interval = 7342 wiphy->max_sched_scan_plan_interval; 7343 7344 return 0; 7345 } 7346 7347 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 7348 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 7349 7350 if (WARN_ON(i >= n_plans)) 7351 return -EINVAL; 7352 7353 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX, 7354 attr, nl80211_plan_policy, NULL); 7355 if (err) 7356 return err; 7357 7358 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 7359 return -EINVAL; 7360 7361 request->scan_plans[i].interval = 7362 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 7363 if (!request->scan_plans[i].interval || 7364 request->scan_plans[i].interval > 7365 wiphy->max_sched_scan_plan_interval) 7366 return -EINVAL; 7367 7368 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 7369 request->scan_plans[i].iterations = 7370 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 7371 if (!request->scan_plans[i].iterations || 7372 (request->scan_plans[i].iterations > 7373 wiphy->max_sched_scan_plan_iterations)) 7374 return -EINVAL; 7375 } else if (i < n_plans - 1) { 7376 /* 7377 * All scan plans but the last one must specify 7378 * a finite number of iterations 7379 */ 7380 return -EINVAL; 7381 } 7382 7383 i++; 7384 } 7385 7386 /* 7387 * The last scan plan must not specify the number of 7388 * iterations, it is supposed to run infinitely 7389 */ 7390 if (request->scan_plans[n_plans - 1].iterations) 7391 return -EINVAL; 7392 7393 return 0; 7394 } 7395 7396 static struct cfg80211_sched_scan_request * 7397 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 7398 struct nlattr **attrs, int max_match_sets) 7399 { 7400 struct cfg80211_sched_scan_request *request; 7401 struct nlattr *attr; 7402 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 7403 enum nl80211_band band; 7404 size_t ie_len; 7405 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 7406 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 7407 7408 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 7409 return ERR_PTR(-EINVAL); 7410 7411 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7412 n_channels = validate_scan_freqs( 7413 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7414 if (!n_channels) 7415 return ERR_PTR(-EINVAL); 7416 } else { 7417 n_channels = ieee80211_get_num_supported_channels(wiphy); 7418 } 7419 7420 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 7421 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7422 tmp) 7423 n_ssids++; 7424 7425 if (n_ssids > wiphy->max_sched_scan_ssids) 7426 return ERR_PTR(-EINVAL); 7427 7428 /* 7429 * First, count the number of 'real' matchsets. Due to an issue with 7430 * the old implementation, matchsets containing only the RSSI attribute 7431 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 7432 * RSSI for all matchsets, rather than their own matchset for reporting 7433 * all APs with a strong RSSI. This is needed to be compatible with 7434 * older userspace that treated a matchset with only the RSSI as the 7435 * global RSSI for all other matchsets - if there are other matchsets. 7436 */ 7437 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7438 nla_for_each_nested(attr, 7439 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7440 tmp) { 7441 struct nlattr *rssi; 7442 7443 err = nla_parse_nested(tb, 7444 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7445 attr, nl80211_match_policy, 7446 NULL); 7447 if (err) 7448 return ERR_PTR(err); 7449 7450 /* SSID and BSSID are mutually exclusive */ 7451 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 7452 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 7453 return ERR_PTR(-EINVAL); 7454 7455 /* add other standalone attributes here */ 7456 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 7457 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 7458 n_match_sets++; 7459 continue; 7460 } 7461 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7462 if (rssi) 7463 default_match_rssi = nla_get_s32(rssi); 7464 } 7465 } 7466 7467 /* However, if there's no other matchset, add the RSSI one */ 7468 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 7469 n_match_sets = 1; 7470 7471 if (n_match_sets > max_match_sets) 7472 return ERR_PTR(-EINVAL); 7473 7474 if (attrs[NL80211_ATTR_IE]) 7475 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 7476 else 7477 ie_len = 0; 7478 7479 if (ie_len > wiphy->max_sched_scan_ie_len) 7480 return ERR_PTR(-EINVAL); 7481 7482 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7483 /* 7484 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 7485 * each scan plan already specifies its own interval 7486 */ 7487 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7488 return ERR_PTR(-EINVAL); 7489 7490 nla_for_each_nested(attr, 7491 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 7492 n_plans++; 7493 } else { 7494 /* 7495 * The scan interval attribute is kept for backward 7496 * compatibility. If no scan plans are specified and sched scan 7497 * interval is specified, one scan plan will be set with this 7498 * scan interval and infinite number of iterations. 7499 */ 7500 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7501 return ERR_PTR(-EINVAL); 7502 7503 n_plans = 1; 7504 } 7505 7506 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 7507 return ERR_PTR(-EINVAL); 7508 7509 if (!wiphy_ext_feature_isset( 7510 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 7511 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 7512 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 7513 return ERR_PTR(-EINVAL); 7514 7515 request = kzalloc(sizeof(*request) 7516 + sizeof(*request->ssids) * n_ssids 7517 + sizeof(*request->match_sets) * n_match_sets 7518 + sizeof(*request->scan_plans) * n_plans 7519 + sizeof(*request->channels) * n_channels 7520 + ie_len, GFP_KERNEL); 7521 if (!request) 7522 return ERR_PTR(-ENOMEM); 7523 7524 if (n_ssids) 7525 request->ssids = (void *)&request->channels[n_channels]; 7526 request->n_ssids = n_ssids; 7527 if (ie_len) { 7528 if (n_ssids) 7529 request->ie = (void *)(request->ssids + n_ssids); 7530 else 7531 request->ie = (void *)(request->channels + n_channels); 7532 } 7533 7534 if (n_match_sets) { 7535 if (request->ie) 7536 request->match_sets = (void *)(request->ie + ie_len); 7537 else if (n_ssids) 7538 request->match_sets = 7539 (void *)(request->ssids + n_ssids); 7540 else 7541 request->match_sets = 7542 (void *)(request->channels + n_channels); 7543 } 7544 request->n_match_sets = n_match_sets; 7545 7546 if (n_match_sets) 7547 request->scan_plans = (void *)(request->match_sets + 7548 n_match_sets); 7549 else if (request->ie) 7550 request->scan_plans = (void *)(request->ie + ie_len); 7551 else if (n_ssids) 7552 request->scan_plans = (void *)(request->ssids + n_ssids); 7553 else 7554 request->scan_plans = (void *)(request->channels + n_channels); 7555 7556 request->n_scan_plans = n_plans; 7557 7558 i = 0; 7559 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7560 /* user specified, bail out if channel not found */ 7561 nla_for_each_nested(attr, 7562 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 7563 tmp) { 7564 struct ieee80211_channel *chan; 7565 7566 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7567 7568 if (!chan) { 7569 err = -EINVAL; 7570 goto out_free; 7571 } 7572 7573 /* ignore disabled channels */ 7574 if (chan->flags & IEEE80211_CHAN_DISABLED) 7575 continue; 7576 7577 request->channels[i] = chan; 7578 i++; 7579 } 7580 } else { 7581 /* all channels */ 7582 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7583 int j; 7584 7585 if (!wiphy->bands[band]) 7586 continue; 7587 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7588 struct ieee80211_channel *chan; 7589 7590 chan = &wiphy->bands[band]->channels[j]; 7591 7592 if (chan->flags & IEEE80211_CHAN_DISABLED) 7593 continue; 7594 7595 request->channels[i] = chan; 7596 i++; 7597 } 7598 } 7599 } 7600 7601 if (!i) { 7602 err = -EINVAL; 7603 goto out_free; 7604 } 7605 7606 request->n_channels = i; 7607 7608 i = 0; 7609 if (n_ssids) { 7610 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7611 tmp) { 7612 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7613 err = -EINVAL; 7614 goto out_free; 7615 } 7616 request->ssids[i].ssid_len = nla_len(attr); 7617 memcpy(request->ssids[i].ssid, nla_data(attr), 7618 nla_len(attr)); 7619 i++; 7620 } 7621 } 7622 7623 i = 0; 7624 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7625 nla_for_each_nested(attr, 7626 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7627 tmp) { 7628 struct nlattr *ssid, *bssid, *rssi; 7629 7630 err = nla_parse_nested(tb, 7631 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7632 attr, nl80211_match_policy, 7633 NULL); 7634 if (err) 7635 goto out_free; 7636 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 7637 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 7638 if (ssid || bssid) { 7639 if (WARN_ON(i >= n_match_sets)) { 7640 /* this indicates a programming error, 7641 * the loop above should have verified 7642 * things properly 7643 */ 7644 err = -EINVAL; 7645 goto out_free; 7646 } 7647 7648 if (ssid) { 7649 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 7650 err = -EINVAL; 7651 goto out_free; 7652 } 7653 memcpy(request->match_sets[i].ssid.ssid, 7654 nla_data(ssid), nla_len(ssid)); 7655 request->match_sets[i].ssid.ssid_len = 7656 nla_len(ssid); 7657 } 7658 if (bssid) { 7659 if (nla_len(bssid) != ETH_ALEN) { 7660 err = -EINVAL; 7661 goto out_free; 7662 } 7663 memcpy(request->match_sets[i].bssid, 7664 nla_data(bssid), ETH_ALEN); 7665 } 7666 7667 /* special attribute - old implementation w/a */ 7668 request->match_sets[i].rssi_thold = 7669 default_match_rssi; 7670 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7671 if (rssi) 7672 request->match_sets[i].rssi_thold = 7673 nla_get_s32(rssi); 7674 } 7675 i++; 7676 } 7677 7678 /* there was no other matchset, so the RSSI one is alone */ 7679 if (i == 0 && n_match_sets) 7680 request->match_sets[0].rssi_thold = default_match_rssi; 7681 7682 request->min_rssi_thold = INT_MAX; 7683 for (i = 0; i < n_match_sets; i++) 7684 request->min_rssi_thold = 7685 min(request->match_sets[i].rssi_thold, 7686 request->min_rssi_thold); 7687 } else { 7688 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 7689 } 7690 7691 if (ie_len) { 7692 request->ie_len = ie_len; 7693 memcpy((void *)request->ie, 7694 nla_data(attrs[NL80211_ATTR_IE]), 7695 request->ie_len); 7696 } 7697 7698 err = nl80211_check_scan_flags(wiphy, wdev, request, attrs, true); 7699 if (err) 7700 goto out_free; 7701 7702 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 7703 request->delay = 7704 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 7705 7706 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 7707 request->relative_rssi = nla_get_s8( 7708 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 7709 request->relative_rssi_set = true; 7710 } 7711 7712 if (request->relative_rssi_set && 7713 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 7714 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 7715 7716 rssi_adjust = nla_data( 7717 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 7718 request->rssi_adjust.band = rssi_adjust->band; 7719 request->rssi_adjust.delta = rssi_adjust->delta; 7720 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 7721 err = -EINVAL; 7722 goto out_free; 7723 } 7724 } 7725 7726 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 7727 if (err) 7728 goto out_free; 7729 7730 request->scan_start = jiffies; 7731 7732 return request; 7733 7734 out_free: 7735 kfree(request); 7736 return ERR_PTR(err); 7737 } 7738 7739 static int nl80211_start_sched_scan(struct sk_buff *skb, 7740 struct genl_info *info) 7741 { 7742 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7743 struct net_device *dev = info->user_ptr[1]; 7744 struct wireless_dev *wdev = dev->ieee80211_ptr; 7745 struct cfg80211_sched_scan_request *sched_scan_req; 7746 bool want_multi; 7747 int err; 7748 7749 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 7750 return -EOPNOTSUPP; 7751 7752 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 7753 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 7754 if (err) 7755 return err; 7756 7757 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 7758 info->attrs, 7759 rdev->wiphy.max_match_sets); 7760 7761 err = PTR_ERR_OR_ZERO(sched_scan_req); 7762 if (err) 7763 goto out_err; 7764 7765 /* leave request id zero for legacy request 7766 * or if driver does not support multi-scheduled scan 7767 */ 7768 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) { 7769 while (!sched_scan_req->reqid) 7770 sched_scan_req->reqid = rdev->wiphy.cookie_counter++; 7771 } 7772 7773 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 7774 if (err) 7775 goto out_free; 7776 7777 sched_scan_req->dev = dev; 7778 sched_scan_req->wiphy = &rdev->wiphy; 7779 7780 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 7781 sched_scan_req->owner_nlportid = info->snd_portid; 7782 7783 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 7784 7785 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 7786 return 0; 7787 7788 out_free: 7789 kfree(sched_scan_req); 7790 out_err: 7791 return err; 7792 } 7793 7794 static int nl80211_stop_sched_scan(struct sk_buff *skb, 7795 struct genl_info *info) 7796 { 7797 struct cfg80211_sched_scan_request *req; 7798 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7799 u64 cookie; 7800 7801 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 7802 return -EOPNOTSUPP; 7803 7804 if (info->attrs[NL80211_ATTR_COOKIE]) { 7805 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7806 return __cfg80211_stop_sched_scan(rdev, cookie, false); 7807 } 7808 7809 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 7810 struct cfg80211_sched_scan_request, 7811 list); 7812 if (!req || req->reqid || 7813 (req->owner_nlportid && 7814 req->owner_nlportid != info->snd_portid)) 7815 return -ENOENT; 7816 7817 return cfg80211_stop_sched_scan_req(rdev, req, false); 7818 } 7819 7820 static int nl80211_start_radar_detection(struct sk_buff *skb, 7821 struct genl_info *info) 7822 { 7823 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7824 struct net_device *dev = info->user_ptr[1]; 7825 struct wireless_dev *wdev = dev->ieee80211_ptr; 7826 struct wiphy *wiphy = wdev->wiphy; 7827 struct cfg80211_chan_def chandef; 7828 enum nl80211_dfs_regions dfs_region; 7829 unsigned int cac_time_ms; 7830 int err; 7831 7832 dfs_region = reg_get_dfs_region(wiphy); 7833 if (dfs_region == NL80211_DFS_UNSET) 7834 return -EINVAL; 7835 7836 err = nl80211_parse_chandef(rdev, info, &chandef); 7837 if (err) 7838 return err; 7839 7840 if (netif_carrier_ok(dev)) 7841 return -EBUSY; 7842 7843 if (wdev->cac_started) 7844 return -EBUSY; 7845 7846 err = cfg80211_chandef_dfs_required(wiphy, &chandef, wdev->iftype); 7847 if (err < 0) 7848 return err; 7849 7850 if (err == 0) 7851 return -EINVAL; 7852 7853 if (!cfg80211_chandef_dfs_usable(wiphy, &chandef)) 7854 return -EINVAL; 7855 7856 /* CAC start is offloaded to HW and can't be started manually */ 7857 if (wiphy_ext_feature_isset(wiphy, NL80211_EXT_FEATURE_DFS_OFFLOAD)) 7858 return -EOPNOTSUPP; 7859 7860 if (!rdev->ops->start_radar_detection) 7861 return -EOPNOTSUPP; 7862 7863 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 7864 if (WARN_ON(!cac_time_ms)) 7865 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 7866 7867 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 7868 if (!err) { 7869 wdev->chandef = chandef; 7870 wdev->cac_started = true; 7871 wdev->cac_start_time = jiffies; 7872 wdev->cac_time_ms = cac_time_ms; 7873 } 7874 return err; 7875 } 7876 7877 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 7878 { 7879 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7880 struct net_device *dev = info->user_ptr[1]; 7881 struct wireless_dev *wdev = dev->ieee80211_ptr; 7882 struct cfg80211_csa_settings params; 7883 /* csa_attrs is defined static to avoid waste of stack size - this 7884 * function is called under RTNL lock, so this should not be a problem. 7885 */ 7886 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 7887 int err; 7888 bool need_new_beacon = false; 7889 bool need_handle_dfs_flag = true; 7890 int len, i; 7891 u32 cs_count; 7892 7893 if (!rdev->ops->channel_switch || 7894 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 7895 return -EOPNOTSUPP; 7896 7897 switch (dev->ieee80211_ptr->iftype) { 7898 case NL80211_IFTYPE_AP: 7899 case NL80211_IFTYPE_P2P_GO: 7900 need_new_beacon = true; 7901 /* For all modes except AP the handle_dfs flag needs to be 7902 * supplied to tell the kernel that userspace will handle radar 7903 * events when they happen. Otherwise a switch to a channel 7904 * requiring DFS will be rejected. 7905 */ 7906 need_handle_dfs_flag = false; 7907 7908 /* useless if AP is not running */ 7909 if (!wdev->beacon_interval) 7910 return -ENOTCONN; 7911 break; 7912 case NL80211_IFTYPE_ADHOC: 7913 if (!wdev->ssid_len) 7914 return -ENOTCONN; 7915 break; 7916 case NL80211_IFTYPE_MESH_POINT: 7917 if (!wdev->mesh_id_len) 7918 return -ENOTCONN; 7919 break; 7920 default: 7921 return -EOPNOTSUPP; 7922 } 7923 7924 memset(¶ms, 0, sizeof(params)); 7925 7926 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7927 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 7928 return -EINVAL; 7929 7930 /* only important for AP, IBSS and mesh create IEs internally */ 7931 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 7932 return -EINVAL; 7933 7934 /* Even though the attribute is u32, the specification says 7935 * u8, so let's make sure we don't overflow. 7936 */ 7937 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 7938 if (cs_count > 255) 7939 return -EINVAL; 7940 7941 params.count = cs_count; 7942 7943 if (!need_new_beacon) 7944 goto skip_beacons; 7945 7946 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 7947 if (err) 7948 return err; 7949 7950 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 7951 info->attrs[NL80211_ATTR_CSA_IES], 7952 nl80211_policy, info->extack); 7953 if (err) 7954 return err; 7955 7956 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 7957 if (err) 7958 return err; 7959 7960 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 7961 return -EINVAL; 7962 7963 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7964 if (!len || (len % sizeof(u16))) 7965 return -EINVAL; 7966 7967 params.n_counter_offsets_beacon = len / sizeof(u16); 7968 if (rdev->wiphy.max_num_csa_counters && 7969 (params.n_counter_offsets_beacon > 7970 rdev->wiphy.max_num_csa_counters)) 7971 return -EINVAL; 7972 7973 params.counter_offsets_beacon = 7974 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7975 7976 /* sanity checks - counters should fit and be the same */ 7977 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 7978 u16 offset = params.counter_offsets_beacon[i]; 7979 7980 if (offset >= params.beacon_csa.tail_len) 7981 return -EINVAL; 7982 7983 if (params.beacon_csa.tail[offset] != params.count) 7984 return -EINVAL; 7985 } 7986 7987 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 7988 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7989 if (!len || (len % sizeof(u16))) 7990 return -EINVAL; 7991 7992 params.n_counter_offsets_presp = len / sizeof(u16); 7993 if (rdev->wiphy.max_num_csa_counters && 7994 (params.n_counter_offsets_presp > 7995 rdev->wiphy.max_num_csa_counters)) 7996 return -EINVAL; 7997 7998 params.counter_offsets_presp = 7999 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 8000 8001 /* sanity checks - counters should fit and be the same */ 8002 for (i = 0; i < params.n_counter_offsets_presp; i++) { 8003 u16 offset = params.counter_offsets_presp[i]; 8004 8005 if (offset >= params.beacon_csa.probe_resp_len) 8006 return -EINVAL; 8007 8008 if (params.beacon_csa.probe_resp[offset] != 8009 params.count) 8010 return -EINVAL; 8011 } 8012 } 8013 8014 skip_beacons: 8015 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 8016 if (err) 8017 return err; 8018 8019 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 8020 wdev->iftype)) 8021 return -EINVAL; 8022 8023 err = cfg80211_chandef_dfs_required(wdev->wiphy, 8024 ¶ms.chandef, 8025 wdev->iftype); 8026 if (err < 0) 8027 return err; 8028 8029 if (err > 0) { 8030 params.radar_required = true; 8031 if (need_handle_dfs_flag && 8032 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 8033 return -EINVAL; 8034 } 8035 } 8036 8037 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 8038 params.block_tx = true; 8039 8040 wdev_lock(wdev); 8041 err = rdev_channel_switch(rdev, dev, ¶ms); 8042 wdev_unlock(wdev); 8043 8044 return err; 8045 } 8046 8047 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 8048 u32 seq, int flags, 8049 struct cfg80211_registered_device *rdev, 8050 struct wireless_dev *wdev, 8051 struct cfg80211_internal_bss *intbss) 8052 { 8053 struct cfg80211_bss *res = &intbss->pub; 8054 const struct cfg80211_bss_ies *ies; 8055 void *hdr; 8056 struct nlattr *bss; 8057 8058 ASSERT_WDEV_LOCK(wdev); 8059 8060 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 8061 NL80211_CMD_NEW_SCAN_RESULTS); 8062 if (!hdr) 8063 return -1; 8064 8065 genl_dump_check_consistent(cb, hdr); 8066 8067 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 8068 goto nla_put_failure; 8069 if (wdev->netdev && 8070 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 8071 goto nla_put_failure; 8072 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 8073 NL80211_ATTR_PAD)) 8074 goto nla_put_failure; 8075 8076 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 8077 if (!bss) 8078 goto nla_put_failure; 8079 if ((!is_zero_ether_addr(res->bssid) && 8080 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 8081 goto nla_put_failure; 8082 8083 rcu_read_lock(); 8084 /* indicate whether we have probe response data or not */ 8085 if (rcu_access_pointer(res->proberesp_ies) && 8086 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 8087 goto fail_unlock_rcu; 8088 8089 /* this pointer prefers to be pointed to probe response data 8090 * but is always valid 8091 */ 8092 ies = rcu_dereference(res->ies); 8093 if (ies) { 8094 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 8095 NL80211_BSS_PAD)) 8096 goto fail_unlock_rcu; 8097 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 8098 ies->len, ies->data)) 8099 goto fail_unlock_rcu; 8100 } 8101 8102 /* and this pointer is always (unless driver didn't know) beacon data */ 8103 ies = rcu_dereference(res->beacon_ies); 8104 if (ies && ies->from_beacon) { 8105 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 8106 NL80211_BSS_PAD)) 8107 goto fail_unlock_rcu; 8108 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 8109 ies->len, ies->data)) 8110 goto fail_unlock_rcu; 8111 } 8112 rcu_read_unlock(); 8113 8114 if (res->beacon_interval && 8115 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 8116 goto nla_put_failure; 8117 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 8118 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 8119 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 8120 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 8121 jiffies_to_msecs(jiffies - intbss->ts))) 8122 goto nla_put_failure; 8123 8124 if (intbss->parent_tsf && 8125 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 8126 intbss->parent_tsf, NL80211_BSS_PAD) || 8127 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 8128 intbss->parent_bssid))) 8129 goto nla_put_failure; 8130 8131 if (intbss->ts_boottime && 8132 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 8133 intbss->ts_boottime, NL80211_BSS_PAD)) 8134 goto nla_put_failure; 8135 8136 if (!nl80211_put_signal(msg, intbss->pub.chains, 8137 intbss->pub.chain_signal, 8138 NL80211_BSS_CHAIN_SIGNAL)) 8139 goto nla_put_failure; 8140 8141 switch (rdev->wiphy.signal_type) { 8142 case CFG80211_SIGNAL_TYPE_MBM: 8143 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 8144 goto nla_put_failure; 8145 break; 8146 case CFG80211_SIGNAL_TYPE_UNSPEC: 8147 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 8148 goto nla_put_failure; 8149 break; 8150 default: 8151 break; 8152 } 8153 8154 switch (wdev->iftype) { 8155 case NL80211_IFTYPE_P2P_CLIENT: 8156 case NL80211_IFTYPE_STATION: 8157 if (intbss == wdev->current_bss && 8158 nla_put_u32(msg, NL80211_BSS_STATUS, 8159 NL80211_BSS_STATUS_ASSOCIATED)) 8160 goto nla_put_failure; 8161 break; 8162 case NL80211_IFTYPE_ADHOC: 8163 if (intbss == wdev->current_bss && 8164 nla_put_u32(msg, NL80211_BSS_STATUS, 8165 NL80211_BSS_STATUS_IBSS_JOINED)) 8166 goto nla_put_failure; 8167 break; 8168 default: 8169 break; 8170 } 8171 8172 nla_nest_end(msg, bss); 8173 8174 genlmsg_end(msg, hdr); 8175 return 0; 8176 8177 fail_unlock_rcu: 8178 rcu_read_unlock(); 8179 nla_put_failure: 8180 genlmsg_cancel(msg, hdr); 8181 return -EMSGSIZE; 8182 } 8183 8184 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 8185 { 8186 struct cfg80211_registered_device *rdev; 8187 struct cfg80211_internal_bss *scan; 8188 struct wireless_dev *wdev; 8189 int start = cb->args[2], idx = 0; 8190 int err; 8191 8192 rtnl_lock(); 8193 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 8194 if (err) { 8195 rtnl_unlock(); 8196 return err; 8197 } 8198 8199 wdev_lock(wdev); 8200 spin_lock_bh(&rdev->bss_lock); 8201 8202 /* 8203 * dump_scan will be called multiple times to break up the scan results 8204 * into multiple messages. It is unlikely that any more bss-es will be 8205 * expired after the first call, so only call only call this on the 8206 * first dump_scan invocation. 8207 */ 8208 if (start == 0) 8209 cfg80211_bss_expire(rdev); 8210 8211 cb->seq = rdev->bss_generation; 8212 8213 list_for_each_entry(scan, &rdev->bss_list, list) { 8214 if (++idx <= start) 8215 continue; 8216 if (nl80211_send_bss(skb, cb, 8217 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8218 rdev, wdev, scan) < 0) { 8219 idx--; 8220 break; 8221 } 8222 } 8223 8224 spin_unlock_bh(&rdev->bss_lock); 8225 wdev_unlock(wdev); 8226 8227 cb->args[2] = idx; 8228 rtnl_unlock(); 8229 8230 return skb->len; 8231 } 8232 8233 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 8234 int flags, struct net_device *dev, 8235 bool allow_radio_stats, 8236 struct survey_info *survey) 8237 { 8238 void *hdr; 8239 struct nlattr *infoattr; 8240 8241 /* skip radio stats if userspace didn't request them */ 8242 if (!survey->channel && !allow_radio_stats) 8243 return 0; 8244 8245 hdr = nl80211hdr_put(msg, portid, seq, flags, 8246 NL80211_CMD_NEW_SURVEY_RESULTS); 8247 if (!hdr) 8248 return -ENOMEM; 8249 8250 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 8251 goto nla_put_failure; 8252 8253 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 8254 if (!infoattr) 8255 goto nla_put_failure; 8256 8257 if (survey->channel && 8258 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 8259 survey->channel->center_freq)) 8260 goto nla_put_failure; 8261 8262 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 8263 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 8264 goto nla_put_failure; 8265 if ((survey->filled & SURVEY_INFO_IN_USE) && 8266 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 8267 goto nla_put_failure; 8268 if ((survey->filled & SURVEY_INFO_TIME) && 8269 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 8270 survey->time, NL80211_SURVEY_INFO_PAD)) 8271 goto nla_put_failure; 8272 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 8273 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 8274 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 8275 goto nla_put_failure; 8276 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 8277 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 8278 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 8279 goto nla_put_failure; 8280 if ((survey->filled & SURVEY_INFO_TIME_RX) && 8281 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 8282 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 8283 goto nla_put_failure; 8284 if ((survey->filled & SURVEY_INFO_TIME_TX) && 8285 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 8286 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 8287 goto nla_put_failure; 8288 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 8289 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 8290 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 8291 goto nla_put_failure; 8292 8293 nla_nest_end(msg, infoattr); 8294 8295 genlmsg_end(msg, hdr); 8296 return 0; 8297 8298 nla_put_failure: 8299 genlmsg_cancel(msg, hdr); 8300 return -EMSGSIZE; 8301 } 8302 8303 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 8304 { 8305 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 8306 struct survey_info survey; 8307 struct cfg80211_registered_device *rdev; 8308 struct wireless_dev *wdev; 8309 int survey_idx = cb->args[2]; 8310 int res; 8311 bool radio_stats; 8312 8313 rtnl_lock(); 8314 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 8315 if (res) 8316 goto out_err; 8317 8318 /* prepare_wdev_dump parsed the attributes */ 8319 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 8320 8321 if (!wdev->netdev) { 8322 res = -EINVAL; 8323 goto out_err; 8324 } 8325 8326 if (!rdev->ops->dump_survey) { 8327 res = -EOPNOTSUPP; 8328 goto out_err; 8329 } 8330 8331 while (1) { 8332 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 8333 if (res == -ENOENT) 8334 break; 8335 if (res) 8336 goto out_err; 8337 8338 /* don't send disabled channels, but do send non-channel data */ 8339 if (survey.channel && 8340 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 8341 survey_idx++; 8342 continue; 8343 } 8344 8345 if (nl80211_send_survey(skb, 8346 NETLINK_CB(cb->skb).portid, 8347 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8348 wdev->netdev, radio_stats, &survey) < 0) 8349 goto out; 8350 survey_idx++; 8351 } 8352 8353 out: 8354 cb->args[2] = survey_idx; 8355 res = skb->len; 8356 out_err: 8357 rtnl_unlock(); 8358 return res; 8359 } 8360 8361 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 8362 { 8363 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 8364 NL80211_WPA_VERSION_2)); 8365 } 8366 8367 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 8368 { 8369 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8370 struct net_device *dev = info->user_ptr[1]; 8371 struct ieee80211_channel *chan; 8372 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL; 8373 int err, ssid_len, ie_len = 0, auth_data_len = 0; 8374 enum nl80211_auth_type auth_type; 8375 struct key_parse key; 8376 bool local_state_change; 8377 8378 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8379 return -EINVAL; 8380 8381 if (!info->attrs[NL80211_ATTR_MAC]) 8382 return -EINVAL; 8383 8384 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 8385 return -EINVAL; 8386 8387 if (!info->attrs[NL80211_ATTR_SSID]) 8388 return -EINVAL; 8389 8390 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8391 return -EINVAL; 8392 8393 err = nl80211_parse_key(info, &key); 8394 if (err) 8395 return err; 8396 8397 if (key.idx >= 0) { 8398 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 8399 return -EINVAL; 8400 if (!key.p.key || !key.p.key_len) 8401 return -EINVAL; 8402 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 8403 key.p.key_len != WLAN_KEY_LEN_WEP40) && 8404 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 8405 key.p.key_len != WLAN_KEY_LEN_WEP104)) 8406 return -EINVAL; 8407 if (key.idx > 3) 8408 return -EINVAL; 8409 } else { 8410 key.p.key_len = 0; 8411 key.p.key = NULL; 8412 } 8413 8414 if (key.idx >= 0) { 8415 int i; 8416 bool ok = false; 8417 8418 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 8419 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 8420 ok = true; 8421 break; 8422 } 8423 } 8424 if (!ok) 8425 return -EINVAL; 8426 } 8427 8428 if (!rdev->ops->auth) 8429 return -EOPNOTSUPP; 8430 8431 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8432 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8433 return -EOPNOTSUPP; 8434 8435 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8436 chan = nl80211_get_valid_chan(&rdev->wiphy, 8437 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8438 if (!chan) 8439 return -EINVAL; 8440 8441 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8442 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8443 8444 if (info->attrs[NL80211_ATTR_IE]) { 8445 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8446 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8447 } 8448 8449 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8450 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 8451 return -EINVAL; 8452 8453 if ((auth_type == NL80211_AUTHTYPE_SAE || 8454 auth_type == NL80211_AUTHTYPE_FILS_SK || 8455 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 8456 auth_type == NL80211_AUTHTYPE_FILS_PK) && 8457 !info->attrs[NL80211_ATTR_AUTH_DATA]) 8458 return -EINVAL; 8459 8460 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 8461 if (auth_type != NL80211_AUTHTYPE_SAE && 8462 auth_type != NL80211_AUTHTYPE_FILS_SK && 8463 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 8464 auth_type != NL80211_AUTHTYPE_FILS_PK) 8465 return -EINVAL; 8466 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 8467 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 8468 /* need to include at least Auth Transaction and Status Code */ 8469 if (auth_data_len < 4) 8470 return -EINVAL; 8471 } 8472 8473 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8474 8475 /* 8476 * Since we no longer track auth state, ignore 8477 * requests to only change local state. 8478 */ 8479 if (local_state_change) 8480 return 0; 8481 8482 wdev_lock(dev->ieee80211_ptr); 8483 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 8484 ssid, ssid_len, ie, ie_len, 8485 key.p.key, key.p.key_len, key.idx, 8486 auth_data, auth_data_len); 8487 wdev_unlock(dev->ieee80211_ptr); 8488 return err; 8489 } 8490 8491 static int validate_pae_over_nl80211(struct cfg80211_registered_device *rdev, 8492 struct genl_info *info) 8493 { 8494 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8495 GENL_SET_ERR_MSG(info, "SOCKET_OWNER not set"); 8496 return -EINVAL; 8497 } 8498 8499 if (!rdev->ops->tx_control_port || 8500 !wiphy_ext_feature_isset(&rdev->wiphy, 8501 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 8502 return -EOPNOTSUPP; 8503 8504 return 0; 8505 } 8506 8507 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 8508 struct genl_info *info, 8509 struct cfg80211_crypto_settings *settings, 8510 int cipher_limit) 8511 { 8512 memset(settings, 0, sizeof(*settings)); 8513 8514 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 8515 8516 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 8517 u16 proto; 8518 8519 proto = nla_get_u16( 8520 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 8521 settings->control_port_ethertype = cpu_to_be16(proto); 8522 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 8523 proto != ETH_P_PAE) 8524 return -EINVAL; 8525 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 8526 settings->control_port_no_encrypt = true; 8527 } else 8528 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 8529 8530 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 8531 int r = validate_pae_over_nl80211(rdev, info); 8532 8533 if (r < 0) 8534 return r; 8535 8536 settings->control_port_over_nl80211 = true; 8537 } 8538 8539 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 8540 void *data; 8541 int len, i; 8542 8543 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8544 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8545 settings->n_ciphers_pairwise = len / sizeof(u32); 8546 8547 if (len % sizeof(u32)) 8548 return -EINVAL; 8549 8550 if (settings->n_ciphers_pairwise > cipher_limit) 8551 return -EINVAL; 8552 8553 memcpy(settings->ciphers_pairwise, data, len); 8554 8555 for (i = 0; i < settings->n_ciphers_pairwise; i++) 8556 if (!cfg80211_supported_cipher_suite( 8557 &rdev->wiphy, 8558 settings->ciphers_pairwise[i])) 8559 return -EINVAL; 8560 } 8561 8562 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 8563 settings->cipher_group = 8564 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 8565 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 8566 settings->cipher_group)) 8567 return -EINVAL; 8568 } 8569 8570 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 8571 settings->wpa_versions = 8572 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 8573 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 8574 return -EINVAL; 8575 } 8576 8577 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 8578 void *data; 8579 int len; 8580 8581 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 8582 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 8583 settings->n_akm_suites = len / sizeof(u32); 8584 8585 if (len % sizeof(u32)) 8586 return -EINVAL; 8587 8588 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 8589 return -EINVAL; 8590 8591 memcpy(settings->akm_suites, data, len); 8592 } 8593 8594 if (info->attrs[NL80211_ATTR_PMK]) { 8595 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 8596 return -EINVAL; 8597 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8598 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK)) 8599 return -EINVAL; 8600 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 8601 } 8602 8603 return 0; 8604 } 8605 8606 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 8607 { 8608 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8609 struct net_device *dev = info->user_ptr[1]; 8610 struct ieee80211_channel *chan; 8611 struct cfg80211_assoc_request req = {}; 8612 const u8 *bssid, *ssid; 8613 int err, ssid_len = 0; 8614 8615 if (dev->ieee80211_ptr->conn_owner_nlportid && 8616 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8617 return -EPERM; 8618 8619 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8620 return -EINVAL; 8621 8622 if (!info->attrs[NL80211_ATTR_MAC] || 8623 !info->attrs[NL80211_ATTR_SSID] || 8624 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8625 return -EINVAL; 8626 8627 if (!rdev->ops->assoc) 8628 return -EOPNOTSUPP; 8629 8630 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8631 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8632 return -EOPNOTSUPP; 8633 8634 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8635 8636 chan = nl80211_get_valid_chan(&rdev->wiphy, 8637 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8638 if (!chan) 8639 return -EINVAL; 8640 8641 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8642 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8643 8644 if (info->attrs[NL80211_ATTR_IE]) { 8645 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8646 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8647 } 8648 8649 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8650 enum nl80211_mfp mfp = 8651 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8652 if (mfp == NL80211_MFP_REQUIRED) 8653 req.use_mfp = true; 8654 else if (mfp != NL80211_MFP_NO) 8655 return -EINVAL; 8656 } 8657 8658 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8659 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8660 8661 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8662 req.flags |= ASSOC_REQ_DISABLE_HT; 8663 8664 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8665 memcpy(&req.ht_capa_mask, 8666 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8667 sizeof(req.ht_capa_mask)); 8668 8669 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8670 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8671 return -EINVAL; 8672 memcpy(&req.ht_capa, 8673 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8674 sizeof(req.ht_capa)); 8675 } 8676 8677 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8678 req.flags |= ASSOC_REQ_DISABLE_VHT; 8679 8680 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8681 memcpy(&req.vht_capa_mask, 8682 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8683 sizeof(req.vht_capa_mask)); 8684 8685 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8686 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8687 return -EINVAL; 8688 memcpy(&req.vht_capa, 8689 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8690 sizeof(req.vht_capa)); 8691 } 8692 8693 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8694 if (!((rdev->wiphy.features & 8695 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8696 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8697 !wiphy_ext_feature_isset(&rdev->wiphy, 8698 NL80211_EXT_FEATURE_RRM)) 8699 return -EINVAL; 8700 req.flags |= ASSOC_REQ_USE_RRM; 8701 } 8702 8703 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 8704 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 8705 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 8706 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 8707 return -EINVAL; 8708 req.fils_nonces = 8709 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 8710 } 8711 8712 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 8713 if (!err) { 8714 wdev_lock(dev->ieee80211_ptr); 8715 8716 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 8717 ssid, ssid_len, &req); 8718 8719 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8720 dev->ieee80211_ptr->conn_owner_nlportid = 8721 info->snd_portid; 8722 memcpy(dev->ieee80211_ptr->disconnect_bssid, 8723 bssid, ETH_ALEN); 8724 } 8725 8726 wdev_unlock(dev->ieee80211_ptr); 8727 } 8728 8729 return err; 8730 } 8731 8732 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 8733 { 8734 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8735 struct net_device *dev = info->user_ptr[1]; 8736 const u8 *ie = NULL, *bssid; 8737 int ie_len = 0, err; 8738 u16 reason_code; 8739 bool local_state_change; 8740 8741 if (dev->ieee80211_ptr->conn_owner_nlportid && 8742 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8743 return -EPERM; 8744 8745 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8746 return -EINVAL; 8747 8748 if (!info->attrs[NL80211_ATTR_MAC]) 8749 return -EINVAL; 8750 8751 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8752 return -EINVAL; 8753 8754 if (!rdev->ops->deauth) 8755 return -EOPNOTSUPP; 8756 8757 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8758 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8759 return -EOPNOTSUPP; 8760 8761 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8762 8763 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8764 if (reason_code == 0) { 8765 /* Reason Code 0 is reserved */ 8766 return -EINVAL; 8767 } 8768 8769 if (info->attrs[NL80211_ATTR_IE]) { 8770 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8771 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8772 } 8773 8774 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8775 8776 wdev_lock(dev->ieee80211_ptr); 8777 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 8778 local_state_change); 8779 wdev_unlock(dev->ieee80211_ptr); 8780 return err; 8781 } 8782 8783 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 8784 { 8785 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8786 struct net_device *dev = info->user_ptr[1]; 8787 const u8 *ie = NULL, *bssid; 8788 int ie_len = 0, err; 8789 u16 reason_code; 8790 bool local_state_change; 8791 8792 if (dev->ieee80211_ptr->conn_owner_nlportid && 8793 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 8794 return -EPERM; 8795 8796 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8797 return -EINVAL; 8798 8799 if (!info->attrs[NL80211_ATTR_MAC]) 8800 return -EINVAL; 8801 8802 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8803 return -EINVAL; 8804 8805 if (!rdev->ops->disassoc) 8806 return -EOPNOTSUPP; 8807 8808 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8809 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8810 return -EOPNOTSUPP; 8811 8812 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8813 8814 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8815 if (reason_code == 0) { 8816 /* Reason Code 0 is reserved */ 8817 return -EINVAL; 8818 } 8819 8820 if (info->attrs[NL80211_ATTR_IE]) { 8821 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8822 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8823 } 8824 8825 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8826 8827 wdev_lock(dev->ieee80211_ptr); 8828 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 8829 local_state_change); 8830 wdev_unlock(dev->ieee80211_ptr); 8831 return err; 8832 } 8833 8834 static bool 8835 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 8836 int mcast_rate[NUM_NL80211_BANDS], 8837 int rateval) 8838 { 8839 struct wiphy *wiphy = &rdev->wiphy; 8840 bool found = false; 8841 int band, i; 8842 8843 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8844 struct ieee80211_supported_band *sband; 8845 8846 sband = wiphy->bands[band]; 8847 if (!sband) 8848 continue; 8849 8850 for (i = 0; i < sband->n_bitrates; i++) { 8851 if (sband->bitrates[i].bitrate == rateval) { 8852 mcast_rate[band] = i + 1; 8853 found = true; 8854 break; 8855 } 8856 } 8857 } 8858 8859 return found; 8860 } 8861 8862 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 8863 { 8864 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8865 struct net_device *dev = info->user_ptr[1]; 8866 struct cfg80211_ibss_params ibss; 8867 struct wiphy *wiphy; 8868 struct cfg80211_cached_keys *connkeys = NULL; 8869 int err; 8870 8871 memset(&ibss, 0, sizeof(ibss)); 8872 8873 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8874 return -EINVAL; 8875 8876 if (!info->attrs[NL80211_ATTR_SSID] || 8877 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8878 return -EINVAL; 8879 8880 ibss.beacon_interval = 100; 8881 8882 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 8883 ibss.beacon_interval = 8884 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8885 8886 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 8887 ibss.beacon_interval); 8888 if (err) 8889 return err; 8890 8891 if (!rdev->ops->join_ibss) 8892 return -EOPNOTSUPP; 8893 8894 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8895 return -EOPNOTSUPP; 8896 8897 wiphy = &rdev->wiphy; 8898 8899 if (info->attrs[NL80211_ATTR_MAC]) { 8900 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8901 8902 if (!is_valid_ether_addr(ibss.bssid)) 8903 return -EINVAL; 8904 } 8905 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8906 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8907 8908 if (info->attrs[NL80211_ATTR_IE]) { 8909 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8910 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8911 } 8912 8913 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 8914 if (err) 8915 return err; 8916 8917 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 8918 NL80211_IFTYPE_ADHOC)) 8919 return -EINVAL; 8920 8921 switch (ibss.chandef.width) { 8922 case NL80211_CHAN_WIDTH_5: 8923 case NL80211_CHAN_WIDTH_10: 8924 case NL80211_CHAN_WIDTH_20_NOHT: 8925 break; 8926 case NL80211_CHAN_WIDTH_20: 8927 case NL80211_CHAN_WIDTH_40: 8928 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8929 return -EINVAL; 8930 break; 8931 case NL80211_CHAN_WIDTH_80: 8932 case NL80211_CHAN_WIDTH_80P80: 8933 case NL80211_CHAN_WIDTH_160: 8934 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8935 return -EINVAL; 8936 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8937 NL80211_EXT_FEATURE_VHT_IBSS)) 8938 return -EINVAL; 8939 break; 8940 default: 8941 return -EINVAL; 8942 } 8943 8944 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 8945 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 8946 8947 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8948 u8 *rates = 8949 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8950 int n_rates = 8951 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8952 struct ieee80211_supported_band *sband = 8953 wiphy->bands[ibss.chandef.chan->band]; 8954 8955 err = ieee80211_get_ratemask(sband, rates, n_rates, 8956 &ibss.basic_rates); 8957 if (err) 8958 return err; 8959 } 8960 8961 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8962 memcpy(&ibss.ht_capa_mask, 8963 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8964 sizeof(ibss.ht_capa_mask)); 8965 8966 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8967 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8968 return -EINVAL; 8969 memcpy(&ibss.ht_capa, 8970 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8971 sizeof(ibss.ht_capa)); 8972 } 8973 8974 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8975 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 8976 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8977 return -EINVAL; 8978 8979 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8980 bool no_ht = false; 8981 8982 connkeys = nl80211_parse_connkeys(rdev, info, &no_ht); 8983 if (IS_ERR(connkeys)) 8984 return PTR_ERR(connkeys); 8985 8986 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 8987 no_ht) { 8988 kzfree(connkeys); 8989 return -EINVAL; 8990 } 8991 } 8992 8993 ibss.control_port = 8994 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 8995 8996 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 8997 int r = validate_pae_over_nl80211(rdev, info); 8998 8999 if (r < 0) 9000 return r; 9001 9002 ibss.control_port_over_nl80211 = true; 9003 } 9004 9005 ibss.userspace_handles_dfs = 9006 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 9007 9008 wdev_lock(dev->ieee80211_ptr); 9009 err = __cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 9010 if (err) 9011 kzfree(connkeys); 9012 else if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 9013 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 9014 wdev_unlock(dev->ieee80211_ptr); 9015 9016 return err; 9017 } 9018 9019 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 9020 { 9021 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9022 struct net_device *dev = info->user_ptr[1]; 9023 9024 if (!rdev->ops->leave_ibss) 9025 return -EOPNOTSUPP; 9026 9027 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 9028 return -EOPNOTSUPP; 9029 9030 return cfg80211_leave_ibss(rdev, dev, false); 9031 } 9032 9033 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 9034 { 9035 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9036 struct net_device *dev = info->user_ptr[1]; 9037 int mcast_rate[NUM_NL80211_BANDS]; 9038 u32 nla_rate; 9039 int err; 9040 9041 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 9042 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 9043 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 9044 return -EOPNOTSUPP; 9045 9046 if (!rdev->ops->set_mcast_rate) 9047 return -EOPNOTSUPP; 9048 9049 memset(mcast_rate, 0, sizeof(mcast_rate)); 9050 9051 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 9052 return -EINVAL; 9053 9054 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 9055 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 9056 return -EINVAL; 9057 9058 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 9059 9060 return err; 9061 } 9062 9063 static struct sk_buff * 9064 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 9065 struct wireless_dev *wdev, int approxlen, 9066 u32 portid, u32 seq, enum nl80211_commands cmd, 9067 enum nl80211_attrs attr, 9068 const struct nl80211_vendor_cmd_info *info, 9069 gfp_t gfp) 9070 { 9071 struct sk_buff *skb; 9072 void *hdr; 9073 struct nlattr *data; 9074 9075 skb = nlmsg_new(approxlen + 100, gfp); 9076 if (!skb) 9077 return NULL; 9078 9079 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 9080 if (!hdr) { 9081 kfree_skb(skb); 9082 return NULL; 9083 } 9084 9085 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 9086 goto nla_put_failure; 9087 9088 if (info) { 9089 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 9090 info->vendor_id)) 9091 goto nla_put_failure; 9092 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 9093 info->subcmd)) 9094 goto nla_put_failure; 9095 } 9096 9097 if (wdev) { 9098 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 9099 wdev_id(wdev), NL80211_ATTR_PAD)) 9100 goto nla_put_failure; 9101 if (wdev->netdev && 9102 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 9103 wdev->netdev->ifindex)) 9104 goto nla_put_failure; 9105 } 9106 9107 data = nla_nest_start(skb, attr); 9108 if (!data) 9109 goto nla_put_failure; 9110 9111 ((void **)skb->cb)[0] = rdev; 9112 ((void **)skb->cb)[1] = hdr; 9113 ((void **)skb->cb)[2] = data; 9114 9115 return skb; 9116 9117 nla_put_failure: 9118 kfree_skb(skb); 9119 return NULL; 9120 } 9121 9122 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 9123 struct wireless_dev *wdev, 9124 enum nl80211_commands cmd, 9125 enum nl80211_attrs attr, 9126 int vendor_event_idx, 9127 int approxlen, gfp_t gfp) 9128 { 9129 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9130 const struct nl80211_vendor_cmd_info *info; 9131 9132 switch (cmd) { 9133 case NL80211_CMD_TESTMODE: 9134 if (WARN_ON(vendor_event_idx != -1)) 9135 return NULL; 9136 info = NULL; 9137 break; 9138 case NL80211_CMD_VENDOR: 9139 if (WARN_ON(vendor_event_idx < 0 || 9140 vendor_event_idx >= wiphy->n_vendor_events)) 9141 return NULL; 9142 info = &wiphy->vendor_events[vendor_event_idx]; 9143 break; 9144 default: 9145 WARN_ON(1); 9146 return NULL; 9147 } 9148 9149 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 9150 cmd, attr, info, gfp); 9151 } 9152 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 9153 9154 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 9155 { 9156 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9157 void *hdr = ((void **)skb->cb)[1]; 9158 struct nlattr *data = ((void **)skb->cb)[2]; 9159 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 9160 9161 /* clear CB data for netlink core to own from now on */ 9162 memset(skb->cb, 0, sizeof(skb->cb)); 9163 9164 nla_nest_end(skb, data); 9165 genlmsg_end(skb, hdr); 9166 9167 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 9168 mcgrp = NL80211_MCGRP_VENDOR; 9169 9170 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 9171 mcgrp, gfp); 9172 } 9173 EXPORT_SYMBOL(__cfg80211_send_event_skb); 9174 9175 #ifdef CONFIG_NL80211_TESTMODE 9176 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 9177 { 9178 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9179 struct wireless_dev *wdev = 9180 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9181 int err; 9182 9183 if (!rdev->ops->testmode_cmd) 9184 return -EOPNOTSUPP; 9185 9186 if (IS_ERR(wdev)) { 9187 err = PTR_ERR(wdev); 9188 if (err != -EINVAL) 9189 return err; 9190 wdev = NULL; 9191 } else if (wdev->wiphy != &rdev->wiphy) { 9192 return -EINVAL; 9193 } 9194 9195 if (!info->attrs[NL80211_ATTR_TESTDATA]) 9196 return -EINVAL; 9197 9198 rdev->cur_cmd_info = info; 9199 err = rdev_testmode_cmd(rdev, wdev, 9200 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 9201 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 9202 rdev->cur_cmd_info = NULL; 9203 9204 return err; 9205 } 9206 9207 static int nl80211_testmode_dump(struct sk_buff *skb, 9208 struct netlink_callback *cb) 9209 { 9210 struct cfg80211_registered_device *rdev; 9211 int err; 9212 long phy_idx; 9213 void *data = NULL; 9214 int data_len = 0; 9215 9216 rtnl_lock(); 9217 9218 if (cb->args[0]) { 9219 /* 9220 * 0 is a valid index, but not valid for args[0], 9221 * so we need to offset by 1. 9222 */ 9223 phy_idx = cb->args[0] - 1; 9224 9225 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 9226 if (!rdev) { 9227 err = -ENOENT; 9228 goto out_err; 9229 } 9230 } else { 9231 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 9232 9233 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 9234 attrbuf, nl80211_fam.maxattr, 9235 nl80211_policy, NULL); 9236 if (err) 9237 goto out_err; 9238 9239 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 9240 if (IS_ERR(rdev)) { 9241 err = PTR_ERR(rdev); 9242 goto out_err; 9243 } 9244 phy_idx = rdev->wiphy_idx; 9245 9246 if (attrbuf[NL80211_ATTR_TESTDATA]) 9247 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 9248 } 9249 9250 if (cb->args[1]) { 9251 data = nla_data((void *)cb->args[1]); 9252 data_len = nla_len((void *)cb->args[1]); 9253 } 9254 9255 if (!rdev->ops->testmode_dump) { 9256 err = -EOPNOTSUPP; 9257 goto out_err; 9258 } 9259 9260 while (1) { 9261 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 9262 cb->nlh->nlmsg_seq, NLM_F_MULTI, 9263 NL80211_CMD_TESTMODE); 9264 struct nlattr *tmdata; 9265 9266 if (!hdr) 9267 break; 9268 9269 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 9270 genlmsg_cancel(skb, hdr); 9271 break; 9272 } 9273 9274 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 9275 if (!tmdata) { 9276 genlmsg_cancel(skb, hdr); 9277 break; 9278 } 9279 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 9280 nla_nest_end(skb, tmdata); 9281 9282 if (err == -ENOBUFS || err == -ENOENT) { 9283 genlmsg_cancel(skb, hdr); 9284 break; 9285 } else if (err) { 9286 genlmsg_cancel(skb, hdr); 9287 goto out_err; 9288 } 9289 9290 genlmsg_end(skb, hdr); 9291 } 9292 9293 err = skb->len; 9294 /* see above */ 9295 cb->args[0] = phy_idx + 1; 9296 out_err: 9297 rtnl_unlock(); 9298 return err; 9299 } 9300 #endif 9301 9302 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 9303 { 9304 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9305 struct net_device *dev = info->user_ptr[1]; 9306 struct cfg80211_connect_params connect; 9307 struct wiphy *wiphy; 9308 struct cfg80211_cached_keys *connkeys = NULL; 9309 int err; 9310 9311 memset(&connect, 0, sizeof(connect)); 9312 9313 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9314 return -EINVAL; 9315 9316 if (!info->attrs[NL80211_ATTR_SSID] || 9317 !nla_len(info->attrs[NL80211_ATTR_SSID])) 9318 return -EINVAL; 9319 9320 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 9321 connect.auth_type = 9322 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 9323 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 9324 NL80211_CMD_CONNECT)) 9325 return -EINVAL; 9326 } else 9327 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 9328 9329 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 9330 9331 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 9332 !wiphy_ext_feature_isset(&rdev->wiphy, 9333 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 9334 return -EINVAL; 9335 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 9336 9337 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 9338 NL80211_MAX_NR_CIPHER_SUITES); 9339 if (err) 9340 return err; 9341 9342 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9343 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9344 return -EOPNOTSUPP; 9345 9346 wiphy = &rdev->wiphy; 9347 9348 connect.bg_scan_period = -1; 9349 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 9350 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 9351 connect.bg_scan_period = 9352 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 9353 } 9354 9355 if (info->attrs[NL80211_ATTR_MAC]) 9356 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9357 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 9358 connect.bssid_hint = 9359 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 9360 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9361 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9362 9363 if (info->attrs[NL80211_ATTR_IE]) { 9364 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9365 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9366 } 9367 9368 if (info->attrs[NL80211_ATTR_USE_MFP]) { 9369 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 9370 if (connect.mfp == NL80211_MFP_OPTIONAL && 9371 !wiphy_ext_feature_isset(&rdev->wiphy, 9372 NL80211_EXT_FEATURE_MFP_OPTIONAL)) 9373 return -EOPNOTSUPP; 9374 9375 if (connect.mfp != NL80211_MFP_REQUIRED && 9376 connect.mfp != NL80211_MFP_NO && 9377 connect.mfp != NL80211_MFP_OPTIONAL) 9378 return -EINVAL; 9379 } else { 9380 connect.mfp = NL80211_MFP_NO; 9381 } 9382 9383 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 9384 connect.prev_bssid = 9385 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 9386 9387 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9388 connect.channel = nl80211_get_valid_chan( 9389 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 9390 if (!connect.channel) 9391 return -EINVAL; 9392 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 9393 connect.channel_hint = nl80211_get_valid_chan( 9394 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 9395 if (!connect.channel_hint) 9396 return -EINVAL; 9397 } 9398 9399 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 9400 connkeys = nl80211_parse_connkeys(rdev, info, NULL); 9401 if (IS_ERR(connkeys)) 9402 return PTR_ERR(connkeys); 9403 } 9404 9405 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 9406 connect.flags |= ASSOC_REQ_DISABLE_HT; 9407 9408 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 9409 memcpy(&connect.ht_capa_mask, 9410 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 9411 sizeof(connect.ht_capa_mask)); 9412 9413 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 9414 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 9415 kzfree(connkeys); 9416 return -EINVAL; 9417 } 9418 memcpy(&connect.ht_capa, 9419 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 9420 sizeof(connect.ht_capa)); 9421 } 9422 9423 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 9424 connect.flags |= ASSOC_REQ_DISABLE_VHT; 9425 9426 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 9427 memcpy(&connect.vht_capa_mask, 9428 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 9429 sizeof(connect.vht_capa_mask)); 9430 9431 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 9432 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 9433 kzfree(connkeys); 9434 return -EINVAL; 9435 } 9436 memcpy(&connect.vht_capa, 9437 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 9438 sizeof(connect.vht_capa)); 9439 } 9440 9441 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 9442 if (!((rdev->wiphy.features & 9443 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 9444 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 9445 !wiphy_ext_feature_isset(&rdev->wiphy, 9446 NL80211_EXT_FEATURE_RRM)) { 9447 kzfree(connkeys); 9448 return -EINVAL; 9449 } 9450 connect.flags |= ASSOC_REQ_USE_RRM; 9451 } 9452 9453 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 9454 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 9455 kzfree(connkeys); 9456 return -EOPNOTSUPP; 9457 } 9458 9459 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 9460 /* bss selection makes no sense if bssid is set */ 9461 if (connect.bssid) { 9462 kzfree(connkeys); 9463 return -EINVAL; 9464 } 9465 9466 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 9467 wiphy, &connect.bss_select); 9468 if (err) { 9469 kzfree(connkeys); 9470 return err; 9471 } 9472 } 9473 9474 if (wiphy_ext_feature_isset(&rdev->wiphy, 9475 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 9476 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9477 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9478 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9479 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9480 connect.fils_erp_username = 9481 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9482 connect.fils_erp_username_len = 9483 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9484 connect.fils_erp_realm = 9485 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9486 connect.fils_erp_realm_len = 9487 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9488 connect.fils_erp_next_seq_num = 9489 nla_get_u16( 9490 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9491 connect.fils_erp_rrk = 9492 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9493 connect.fils_erp_rrk_len = 9494 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9495 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9496 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9497 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9498 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9499 kzfree(connkeys); 9500 return -EINVAL; 9501 } 9502 9503 if (nla_get_flag(info->attrs[NL80211_ATTR_EXTERNAL_AUTH_SUPPORT])) { 9504 if (!info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9505 kzfree(connkeys); 9506 GENL_SET_ERR_MSG(info, 9507 "external auth requires connection ownership"); 9508 return -EINVAL; 9509 } 9510 connect.flags |= CONNECT_REQ_EXTERNAL_AUTH_SUPPORT; 9511 } 9512 9513 wdev_lock(dev->ieee80211_ptr); 9514 9515 err = cfg80211_connect(rdev, dev, &connect, connkeys, 9516 connect.prev_bssid); 9517 if (err) 9518 kzfree(connkeys); 9519 9520 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9521 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 9522 if (connect.bssid) 9523 memcpy(dev->ieee80211_ptr->disconnect_bssid, 9524 connect.bssid, ETH_ALEN); 9525 else 9526 memset(dev->ieee80211_ptr->disconnect_bssid, 9527 0, ETH_ALEN); 9528 } 9529 9530 wdev_unlock(dev->ieee80211_ptr); 9531 9532 return err; 9533 } 9534 9535 static int nl80211_update_connect_params(struct sk_buff *skb, 9536 struct genl_info *info) 9537 { 9538 struct cfg80211_connect_params connect = {}; 9539 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9540 struct net_device *dev = info->user_ptr[1]; 9541 struct wireless_dev *wdev = dev->ieee80211_ptr; 9542 bool fils_sk_offload; 9543 u32 auth_type; 9544 u32 changed = 0; 9545 int ret; 9546 9547 if (!rdev->ops->update_connect_params) 9548 return -EOPNOTSUPP; 9549 9550 if (info->attrs[NL80211_ATTR_IE]) { 9551 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9552 return -EINVAL; 9553 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9554 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9555 changed |= UPDATE_ASSOC_IES; 9556 } 9557 9558 fils_sk_offload = wiphy_ext_feature_isset(&rdev->wiphy, 9559 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD); 9560 9561 /* 9562 * when driver supports fils-sk offload all attributes must be 9563 * provided. So the else covers "fils-sk-not-all" and 9564 * "no-fils-sk-any". 9565 */ 9566 if (fils_sk_offload && 9567 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9568 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9569 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9570 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9571 connect.fils_erp_username = 9572 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9573 connect.fils_erp_username_len = 9574 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9575 connect.fils_erp_realm = 9576 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9577 connect.fils_erp_realm_len = 9578 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9579 connect.fils_erp_next_seq_num = 9580 nla_get_u16( 9581 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9582 connect.fils_erp_rrk = 9583 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9584 connect.fils_erp_rrk_len = 9585 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9586 changed |= UPDATE_FILS_ERP_INFO; 9587 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9588 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9589 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9590 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9591 return -EINVAL; 9592 } 9593 9594 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 9595 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 9596 if (!nl80211_valid_auth_type(rdev, auth_type, 9597 NL80211_CMD_CONNECT)) 9598 return -EINVAL; 9599 9600 if (auth_type == NL80211_AUTHTYPE_FILS_SK && 9601 fils_sk_offload && !(changed & UPDATE_FILS_ERP_INFO)) 9602 return -EINVAL; 9603 9604 connect.auth_type = auth_type; 9605 changed |= UPDATE_AUTH_TYPE; 9606 } 9607 9608 wdev_lock(dev->ieee80211_ptr); 9609 if (!wdev->current_bss) 9610 ret = -ENOLINK; 9611 else 9612 ret = rdev_update_connect_params(rdev, dev, &connect, changed); 9613 wdev_unlock(dev->ieee80211_ptr); 9614 9615 return ret; 9616 } 9617 9618 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 9619 { 9620 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9621 struct net_device *dev = info->user_ptr[1]; 9622 u16 reason; 9623 int ret; 9624 9625 if (dev->ieee80211_ptr->conn_owner_nlportid && 9626 dev->ieee80211_ptr->conn_owner_nlportid != info->snd_portid) 9627 return -EPERM; 9628 9629 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9630 reason = WLAN_REASON_DEAUTH_LEAVING; 9631 else 9632 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9633 9634 if (reason == 0) 9635 return -EINVAL; 9636 9637 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9638 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9639 return -EOPNOTSUPP; 9640 9641 wdev_lock(dev->ieee80211_ptr); 9642 ret = cfg80211_disconnect(rdev, dev, reason, true); 9643 wdev_unlock(dev->ieee80211_ptr); 9644 return ret; 9645 } 9646 9647 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 9648 { 9649 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9650 struct net *net; 9651 int err; 9652 9653 if (info->attrs[NL80211_ATTR_PID]) { 9654 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 9655 9656 net = get_net_ns_by_pid(pid); 9657 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 9658 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 9659 9660 net = get_net_ns_by_fd(fd); 9661 } else { 9662 return -EINVAL; 9663 } 9664 9665 if (IS_ERR(net)) 9666 return PTR_ERR(net); 9667 9668 err = 0; 9669 9670 /* check if anything to do */ 9671 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 9672 err = cfg80211_switch_netns(rdev, net); 9673 9674 put_net(net); 9675 return err; 9676 } 9677 9678 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 9679 { 9680 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9681 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 9682 struct cfg80211_pmksa *pmksa) = NULL; 9683 struct net_device *dev = info->user_ptr[1]; 9684 struct cfg80211_pmksa pmksa; 9685 9686 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 9687 9688 if (!info->attrs[NL80211_ATTR_PMKID]) 9689 return -EINVAL; 9690 9691 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 9692 9693 if (info->attrs[NL80211_ATTR_MAC]) { 9694 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9695 } else if (info->attrs[NL80211_ATTR_SSID] && 9696 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 9697 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA || 9698 info->attrs[NL80211_ATTR_PMK])) { 9699 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9700 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9701 pmksa.cache_id = 9702 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 9703 } else { 9704 return -EINVAL; 9705 } 9706 if (info->attrs[NL80211_ATTR_PMK]) { 9707 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 9708 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 9709 } 9710 9711 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9712 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9713 return -EOPNOTSUPP; 9714 9715 switch (info->genlhdr->cmd) { 9716 case NL80211_CMD_SET_PMKSA: 9717 rdev_ops = rdev->ops->set_pmksa; 9718 break; 9719 case NL80211_CMD_DEL_PMKSA: 9720 rdev_ops = rdev->ops->del_pmksa; 9721 break; 9722 default: 9723 WARN_ON(1); 9724 break; 9725 } 9726 9727 if (!rdev_ops) 9728 return -EOPNOTSUPP; 9729 9730 return rdev_ops(&rdev->wiphy, dev, &pmksa); 9731 } 9732 9733 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 9734 { 9735 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9736 struct net_device *dev = info->user_ptr[1]; 9737 9738 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9739 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9740 return -EOPNOTSUPP; 9741 9742 if (!rdev->ops->flush_pmksa) 9743 return -EOPNOTSUPP; 9744 9745 return rdev_flush_pmksa(rdev, dev); 9746 } 9747 9748 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 9749 { 9750 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9751 struct net_device *dev = info->user_ptr[1]; 9752 u8 action_code, dialog_token; 9753 u32 peer_capability = 0; 9754 u16 status_code; 9755 u8 *peer; 9756 bool initiator; 9757 9758 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9759 !rdev->ops->tdls_mgmt) 9760 return -EOPNOTSUPP; 9761 9762 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 9763 !info->attrs[NL80211_ATTR_STATUS_CODE] || 9764 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 9765 !info->attrs[NL80211_ATTR_IE] || 9766 !info->attrs[NL80211_ATTR_MAC]) 9767 return -EINVAL; 9768 9769 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9770 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 9771 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 9772 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 9773 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 9774 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 9775 peer_capability = 9776 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 9777 9778 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 9779 dialog_token, status_code, peer_capability, 9780 initiator, 9781 nla_data(info->attrs[NL80211_ATTR_IE]), 9782 nla_len(info->attrs[NL80211_ATTR_IE])); 9783 } 9784 9785 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 9786 { 9787 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9788 struct net_device *dev = info->user_ptr[1]; 9789 enum nl80211_tdls_operation operation; 9790 u8 *peer; 9791 9792 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9793 !rdev->ops->tdls_oper) 9794 return -EOPNOTSUPP; 9795 9796 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 9797 !info->attrs[NL80211_ATTR_MAC]) 9798 return -EINVAL; 9799 9800 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 9801 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9802 9803 return rdev_tdls_oper(rdev, dev, peer, operation); 9804 } 9805 9806 static int nl80211_remain_on_channel(struct sk_buff *skb, 9807 struct genl_info *info) 9808 { 9809 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9810 struct wireless_dev *wdev = info->user_ptr[1]; 9811 struct cfg80211_chan_def chandef; 9812 const struct cfg80211_chan_def *compat_chandef; 9813 struct sk_buff *msg; 9814 void *hdr; 9815 u64 cookie; 9816 u32 duration; 9817 int err; 9818 9819 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 9820 !info->attrs[NL80211_ATTR_DURATION]) 9821 return -EINVAL; 9822 9823 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9824 9825 if (!rdev->ops->remain_on_channel || 9826 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 9827 return -EOPNOTSUPP; 9828 9829 /* 9830 * We should be on that channel for at least a minimum amount of 9831 * time (10ms) but no longer than the driver supports. 9832 */ 9833 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9834 duration > rdev->wiphy.max_remain_on_channel_duration) 9835 return -EINVAL; 9836 9837 err = nl80211_parse_chandef(rdev, info, &chandef); 9838 if (err) 9839 return err; 9840 9841 wdev_lock(wdev); 9842 if (!cfg80211_off_channel_oper_allowed(wdev) && 9843 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) { 9844 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef, 9845 &chandef); 9846 if (compat_chandef != &chandef) { 9847 wdev_unlock(wdev); 9848 return -EBUSY; 9849 } 9850 } 9851 wdev_unlock(wdev); 9852 9853 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9854 if (!msg) 9855 return -ENOMEM; 9856 9857 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9858 NL80211_CMD_REMAIN_ON_CHANNEL); 9859 if (!hdr) { 9860 err = -ENOBUFS; 9861 goto free_msg; 9862 } 9863 9864 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 9865 duration, &cookie); 9866 9867 if (err) 9868 goto free_msg; 9869 9870 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9871 NL80211_ATTR_PAD)) 9872 goto nla_put_failure; 9873 9874 genlmsg_end(msg, hdr); 9875 9876 return genlmsg_reply(msg, info); 9877 9878 nla_put_failure: 9879 err = -ENOBUFS; 9880 free_msg: 9881 nlmsg_free(msg); 9882 return err; 9883 } 9884 9885 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 9886 struct genl_info *info) 9887 { 9888 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9889 struct wireless_dev *wdev = info->user_ptr[1]; 9890 u64 cookie; 9891 9892 if (!info->attrs[NL80211_ATTR_COOKIE]) 9893 return -EINVAL; 9894 9895 if (!rdev->ops->cancel_remain_on_channel) 9896 return -EOPNOTSUPP; 9897 9898 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9899 9900 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 9901 } 9902 9903 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 9904 struct genl_info *info) 9905 { 9906 struct cfg80211_bitrate_mask mask; 9907 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9908 struct net_device *dev = info->user_ptr[1]; 9909 int err; 9910 9911 if (!rdev->ops->set_bitrate_mask) 9912 return -EOPNOTSUPP; 9913 9914 err = nl80211_parse_tx_bitrate_mask(info, &mask); 9915 if (err) 9916 return err; 9917 9918 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 9919 } 9920 9921 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 9922 { 9923 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9924 struct wireless_dev *wdev = info->user_ptr[1]; 9925 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 9926 9927 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 9928 return -EINVAL; 9929 9930 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 9931 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 9932 9933 switch (wdev->iftype) { 9934 case NL80211_IFTYPE_STATION: 9935 case NL80211_IFTYPE_ADHOC: 9936 case NL80211_IFTYPE_P2P_CLIENT: 9937 case NL80211_IFTYPE_AP: 9938 case NL80211_IFTYPE_AP_VLAN: 9939 case NL80211_IFTYPE_MESH_POINT: 9940 case NL80211_IFTYPE_P2P_GO: 9941 case NL80211_IFTYPE_P2P_DEVICE: 9942 break; 9943 case NL80211_IFTYPE_NAN: 9944 default: 9945 return -EOPNOTSUPP; 9946 } 9947 9948 /* not much point in registering if we can't reply */ 9949 if (!rdev->ops->mgmt_tx) 9950 return -EOPNOTSUPP; 9951 9952 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 9953 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 9954 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 9955 } 9956 9957 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 9958 { 9959 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9960 struct wireless_dev *wdev = info->user_ptr[1]; 9961 struct cfg80211_chan_def chandef; 9962 int err; 9963 void *hdr = NULL; 9964 u64 cookie; 9965 struct sk_buff *msg = NULL; 9966 struct cfg80211_mgmt_tx_params params = { 9967 .dont_wait_for_ack = 9968 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 9969 }; 9970 9971 if (!info->attrs[NL80211_ATTR_FRAME]) 9972 return -EINVAL; 9973 9974 if (!rdev->ops->mgmt_tx) 9975 return -EOPNOTSUPP; 9976 9977 switch (wdev->iftype) { 9978 case NL80211_IFTYPE_P2P_DEVICE: 9979 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9980 return -EINVAL; 9981 case NL80211_IFTYPE_STATION: 9982 case NL80211_IFTYPE_ADHOC: 9983 case NL80211_IFTYPE_P2P_CLIENT: 9984 case NL80211_IFTYPE_AP: 9985 case NL80211_IFTYPE_AP_VLAN: 9986 case NL80211_IFTYPE_MESH_POINT: 9987 case NL80211_IFTYPE_P2P_GO: 9988 break; 9989 case NL80211_IFTYPE_NAN: 9990 default: 9991 return -EOPNOTSUPP; 9992 } 9993 9994 if (info->attrs[NL80211_ATTR_DURATION]) { 9995 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9996 return -EINVAL; 9997 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9998 9999 /* 10000 * We should wait on the channel for at least a minimum amount 10001 * of time (10ms) but no longer than the driver supports. 10002 */ 10003 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 10004 params.wait > rdev->wiphy.max_remain_on_channel_duration) 10005 return -EINVAL; 10006 } 10007 10008 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 10009 10010 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 10011 return -EINVAL; 10012 10013 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 10014 10015 /* get the channel if any has been specified, otherwise pass NULL to 10016 * the driver. The latter will use the current one 10017 */ 10018 chandef.chan = NULL; 10019 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 10020 err = nl80211_parse_chandef(rdev, info, &chandef); 10021 if (err) 10022 return err; 10023 } 10024 10025 if (!chandef.chan && params.offchan) 10026 return -EINVAL; 10027 10028 wdev_lock(wdev); 10029 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) { 10030 wdev_unlock(wdev); 10031 return -EBUSY; 10032 } 10033 wdev_unlock(wdev); 10034 10035 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 10036 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 10037 10038 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 10039 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 10040 int i; 10041 10042 if (len % sizeof(u16)) 10043 return -EINVAL; 10044 10045 params.n_csa_offsets = len / sizeof(u16); 10046 params.csa_offsets = 10047 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 10048 10049 /* check that all the offsets fit the frame */ 10050 for (i = 0; i < params.n_csa_offsets; i++) { 10051 if (params.csa_offsets[i] >= params.len) 10052 return -EINVAL; 10053 } 10054 } 10055 10056 if (!params.dont_wait_for_ack) { 10057 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10058 if (!msg) 10059 return -ENOMEM; 10060 10061 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10062 NL80211_CMD_FRAME); 10063 if (!hdr) { 10064 err = -ENOBUFS; 10065 goto free_msg; 10066 } 10067 } 10068 10069 params.chan = chandef.chan; 10070 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 10071 if (err) 10072 goto free_msg; 10073 10074 if (msg) { 10075 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 10076 NL80211_ATTR_PAD)) 10077 goto nla_put_failure; 10078 10079 genlmsg_end(msg, hdr); 10080 return genlmsg_reply(msg, info); 10081 } 10082 10083 return 0; 10084 10085 nla_put_failure: 10086 err = -ENOBUFS; 10087 free_msg: 10088 nlmsg_free(msg); 10089 return err; 10090 } 10091 10092 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 10093 { 10094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10095 struct wireless_dev *wdev = info->user_ptr[1]; 10096 u64 cookie; 10097 10098 if (!info->attrs[NL80211_ATTR_COOKIE]) 10099 return -EINVAL; 10100 10101 if (!rdev->ops->mgmt_tx_cancel_wait) 10102 return -EOPNOTSUPP; 10103 10104 switch (wdev->iftype) { 10105 case NL80211_IFTYPE_STATION: 10106 case NL80211_IFTYPE_ADHOC: 10107 case NL80211_IFTYPE_P2P_CLIENT: 10108 case NL80211_IFTYPE_AP: 10109 case NL80211_IFTYPE_AP_VLAN: 10110 case NL80211_IFTYPE_P2P_GO: 10111 case NL80211_IFTYPE_P2P_DEVICE: 10112 break; 10113 case NL80211_IFTYPE_NAN: 10114 default: 10115 return -EOPNOTSUPP; 10116 } 10117 10118 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 10119 10120 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 10121 } 10122 10123 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 10124 { 10125 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10126 struct wireless_dev *wdev; 10127 struct net_device *dev = info->user_ptr[1]; 10128 u8 ps_state; 10129 bool state; 10130 int err; 10131 10132 if (!info->attrs[NL80211_ATTR_PS_STATE]) 10133 return -EINVAL; 10134 10135 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 10136 10137 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 10138 return -EINVAL; 10139 10140 wdev = dev->ieee80211_ptr; 10141 10142 if (!rdev->ops->set_power_mgmt) 10143 return -EOPNOTSUPP; 10144 10145 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 10146 10147 if (state == wdev->ps) 10148 return 0; 10149 10150 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 10151 if (!err) 10152 wdev->ps = state; 10153 return err; 10154 } 10155 10156 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 10157 { 10158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10159 enum nl80211_ps_state ps_state; 10160 struct wireless_dev *wdev; 10161 struct net_device *dev = info->user_ptr[1]; 10162 struct sk_buff *msg; 10163 void *hdr; 10164 int err; 10165 10166 wdev = dev->ieee80211_ptr; 10167 10168 if (!rdev->ops->set_power_mgmt) 10169 return -EOPNOTSUPP; 10170 10171 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10172 if (!msg) 10173 return -ENOMEM; 10174 10175 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10176 NL80211_CMD_GET_POWER_SAVE); 10177 if (!hdr) { 10178 err = -ENOBUFS; 10179 goto free_msg; 10180 } 10181 10182 if (wdev->ps) 10183 ps_state = NL80211_PS_ENABLED; 10184 else 10185 ps_state = NL80211_PS_DISABLED; 10186 10187 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 10188 goto nla_put_failure; 10189 10190 genlmsg_end(msg, hdr); 10191 return genlmsg_reply(msg, info); 10192 10193 nla_put_failure: 10194 err = -ENOBUFS; 10195 free_msg: 10196 nlmsg_free(msg); 10197 return err; 10198 } 10199 10200 static const struct nla_policy 10201 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 10202 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 10203 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 10204 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 10205 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 10206 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 10207 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 10208 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 10209 }; 10210 10211 static int nl80211_set_cqm_txe(struct genl_info *info, 10212 u32 rate, u32 pkts, u32 intvl) 10213 { 10214 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10215 struct net_device *dev = info->user_ptr[1]; 10216 struct wireless_dev *wdev = dev->ieee80211_ptr; 10217 10218 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 10219 return -EINVAL; 10220 10221 if (!rdev->ops->set_cqm_txe_config) 10222 return -EOPNOTSUPP; 10223 10224 if (wdev->iftype != NL80211_IFTYPE_STATION && 10225 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 10226 return -EOPNOTSUPP; 10227 10228 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 10229 } 10230 10231 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 10232 struct net_device *dev) 10233 { 10234 struct wireless_dev *wdev = dev->ieee80211_ptr; 10235 s32 last, low, high; 10236 u32 hyst; 10237 int i, n; 10238 int err; 10239 10240 /* RSSI reporting disabled? */ 10241 if (!wdev->cqm_config) 10242 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 10243 10244 /* 10245 * Obtain current RSSI value if possible, if not and no RSSI threshold 10246 * event has been received yet, we should receive an event after a 10247 * connection is established and enough beacons received to calculate 10248 * the average. 10249 */ 10250 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss && 10251 rdev->ops->get_station) { 10252 struct station_info sinfo = {}; 10253 u8 *mac_addr; 10254 10255 mac_addr = wdev->current_bss->pub.bssid; 10256 10257 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 10258 if (err) 10259 return err; 10260 10261 if (sinfo.filled & BIT_ULL(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 10262 wdev->cqm_config->last_rssi_event_value = 10263 (s8) sinfo.rx_beacon_signal_avg; 10264 } 10265 10266 last = wdev->cqm_config->last_rssi_event_value; 10267 hyst = wdev->cqm_config->rssi_hyst; 10268 n = wdev->cqm_config->n_rssi_thresholds; 10269 10270 for (i = 0; i < n; i++) 10271 if (last < wdev->cqm_config->rssi_thresholds[i]) 10272 break; 10273 10274 low = i > 0 ? 10275 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN; 10276 high = i < n ? 10277 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX; 10278 10279 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 10280 } 10281 10282 static int nl80211_set_cqm_rssi(struct genl_info *info, 10283 const s32 *thresholds, int n_thresholds, 10284 u32 hysteresis) 10285 { 10286 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10287 struct net_device *dev = info->user_ptr[1]; 10288 struct wireless_dev *wdev = dev->ieee80211_ptr; 10289 int i, err; 10290 s32 prev = S32_MIN; 10291 10292 /* Check all values negative and sorted */ 10293 for (i = 0; i < n_thresholds; i++) { 10294 if (thresholds[i] > 0 || thresholds[i] <= prev) 10295 return -EINVAL; 10296 10297 prev = thresholds[i]; 10298 } 10299 10300 if (wdev->iftype != NL80211_IFTYPE_STATION && 10301 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 10302 return -EOPNOTSUPP; 10303 10304 wdev_lock(wdev); 10305 cfg80211_cqm_config_free(wdev); 10306 wdev_unlock(wdev); 10307 10308 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { 10309 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ 10310 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 10311 10312 return rdev_set_cqm_rssi_config(rdev, dev, 10313 thresholds[0], hysteresis); 10314 } 10315 10316 if (!wiphy_ext_feature_isset(&rdev->wiphy, 10317 NL80211_EXT_FEATURE_CQM_RSSI_LIST)) 10318 return -EOPNOTSUPP; 10319 10320 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 10321 n_thresholds = 0; 10322 10323 wdev_lock(wdev); 10324 if (n_thresholds) { 10325 struct cfg80211_cqm_config *cqm_config; 10326 10327 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) + 10328 n_thresholds * sizeof(s32), GFP_KERNEL); 10329 if (!cqm_config) { 10330 err = -ENOMEM; 10331 goto unlock; 10332 } 10333 10334 cqm_config->rssi_hyst = hysteresis; 10335 cqm_config->n_rssi_thresholds = n_thresholds; 10336 memcpy(cqm_config->rssi_thresholds, thresholds, 10337 n_thresholds * sizeof(s32)); 10338 10339 wdev->cqm_config = cqm_config; 10340 } 10341 10342 err = cfg80211_cqm_rssi_update(rdev, dev); 10343 10344 unlock: 10345 wdev_unlock(wdev); 10346 10347 return err; 10348 } 10349 10350 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 10351 { 10352 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 10353 struct nlattr *cqm; 10354 int err; 10355 10356 cqm = info->attrs[NL80211_ATTR_CQM]; 10357 if (!cqm) 10358 return -EINVAL; 10359 10360 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 10361 nl80211_attr_cqm_policy, info->extack); 10362 if (err) 10363 return err; 10364 10365 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 10366 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 10367 const s32 *thresholds = 10368 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 10369 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 10370 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 10371 10372 if (len % 4) 10373 return -EINVAL; 10374 10375 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 10376 hysteresis); 10377 } 10378 10379 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 10380 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 10381 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 10382 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 10383 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 10384 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 10385 10386 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 10387 } 10388 10389 return -EINVAL; 10390 } 10391 10392 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 10393 { 10394 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10395 struct net_device *dev = info->user_ptr[1]; 10396 struct ocb_setup setup = {}; 10397 int err; 10398 10399 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 10400 if (err) 10401 return err; 10402 10403 return cfg80211_join_ocb(rdev, dev, &setup); 10404 } 10405 10406 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 10407 { 10408 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10409 struct net_device *dev = info->user_ptr[1]; 10410 10411 return cfg80211_leave_ocb(rdev, dev); 10412 } 10413 10414 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 10415 { 10416 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10417 struct net_device *dev = info->user_ptr[1]; 10418 struct mesh_config cfg; 10419 struct mesh_setup setup; 10420 int err; 10421 10422 /* start with default */ 10423 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 10424 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 10425 10426 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 10427 /* and parse parameters if given */ 10428 err = nl80211_parse_mesh_config(info, &cfg, NULL); 10429 if (err) 10430 return err; 10431 } 10432 10433 if (!info->attrs[NL80211_ATTR_MESH_ID] || 10434 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 10435 return -EINVAL; 10436 10437 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 10438 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 10439 10440 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 10441 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 10442 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 10443 return -EINVAL; 10444 10445 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 10446 setup.beacon_interval = 10447 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 10448 10449 err = cfg80211_validate_beacon_int(rdev, 10450 NL80211_IFTYPE_MESH_POINT, 10451 setup.beacon_interval); 10452 if (err) 10453 return err; 10454 } 10455 10456 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 10457 setup.dtim_period = 10458 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 10459 if (setup.dtim_period < 1 || setup.dtim_period > 100) 10460 return -EINVAL; 10461 } 10462 10463 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 10464 /* parse additional setup parameters if given */ 10465 err = nl80211_parse_mesh_setup(info, &setup); 10466 if (err) 10467 return err; 10468 } 10469 10470 if (setup.user_mpm) 10471 cfg.auto_open_plinks = false; 10472 10473 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 10474 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 10475 if (err) 10476 return err; 10477 } else { 10478 /* __cfg80211_join_mesh() will sort it out */ 10479 setup.chandef.chan = NULL; 10480 } 10481 10482 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 10483 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10484 int n_rates = 10485 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 10486 struct ieee80211_supported_band *sband; 10487 10488 if (!setup.chandef.chan) 10489 return -EINVAL; 10490 10491 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 10492 10493 err = ieee80211_get_ratemask(sband, rates, n_rates, 10494 &setup.basic_rates); 10495 if (err) 10496 return err; 10497 } 10498 10499 if (info->attrs[NL80211_ATTR_TX_RATES]) { 10500 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate); 10501 if (err) 10502 return err; 10503 10504 if (!setup.chandef.chan) 10505 return -EINVAL; 10506 10507 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 10508 &setup.beacon_rate); 10509 if (err) 10510 return err; 10511 } 10512 10513 setup.userspace_handles_dfs = 10514 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 10515 10516 if (info->attrs[NL80211_ATTR_CONTROL_PORT_OVER_NL80211]) { 10517 int r = validate_pae_over_nl80211(rdev, info); 10518 10519 if (r < 0) 10520 return r; 10521 10522 setup.control_port_over_nl80211 = true; 10523 } 10524 10525 wdev_lock(dev->ieee80211_ptr); 10526 err = __cfg80211_join_mesh(rdev, dev, &setup, &cfg); 10527 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) 10528 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 10529 wdev_unlock(dev->ieee80211_ptr); 10530 10531 return err; 10532 } 10533 10534 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 10535 { 10536 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10537 struct net_device *dev = info->user_ptr[1]; 10538 10539 return cfg80211_leave_mesh(rdev, dev); 10540 } 10541 10542 #ifdef CONFIG_PM 10543 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 10544 struct cfg80211_registered_device *rdev) 10545 { 10546 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 10547 struct nlattr *nl_pats, *nl_pat; 10548 int i, pat_len; 10549 10550 if (!wowlan->n_patterns) 10551 return 0; 10552 10553 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 10554 if (!nl_pats) 10555 return -ENOBUFS; 10556 10557 for (i = 0; i < wowlan->n_patterns; i++) { 10558 nl_pat = nla_nest_start(msg, i + 1); 10559 if (!nl_pat) 10560 return -ENOBUFS; 10561 pat_len = wowlan->patterns[i].pattern_len; 10562 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 10563 wowlan->patterns[i].mask) || 10564 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10565 wowlan->patterns[i].pattern) || 10566 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10567 wowlan->patterns[i].pkt_offset)) 10568 return -ENOBUFS; 10569 nla_nest_end(msg, nl_pat); 10570 } 10571 nla_nest_end(msg, nl_pats); 10572 10573 return 0; 10574 } 10575 10576 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 10577 struct cfg80211_wowlan_tcp *tcp) 10578 { 10579 struct nlattr *nl_tcp; 10580 10581 if (!tcp) 10582 return 0; 10583 10584 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 10585 if (!nl_tcp) 10586 return -ENOBUFS; 10587 10588 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 10589 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 10590 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 10591 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 10592 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 10593 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 10594 tcp->payload_len, tcp->payload) || 10595 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 10596 tcp->data_interval) || 10597 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 10598 tcp->wake_len, tcp->wake_data) || 10599 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 10600 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 10601 return -ENOBUFS; 10602 10603 if (tcp->payload_seq.len && 10604 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 10605 sizeof(tcp->payload_seq), &tcp->payload_seq)) 10606 return -ENOBUFS; 10607 10608 if (tcp->payload_tok.len && 10609 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 10610 sizeof(tcp->payload_tok) + tcp->tokens_size, 10611 &tcp->payload_tok)) 10612 return -ENOBUFS; 10613 10614 nla_nest_end(msg, nl_tcp); 10615 10616 return 0; 10617 } 10618 10619 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 10620 struct cfg80211_sched_scan_request *req) 10621 { 10622 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 10623 int i; 10624 10625 if (!req) 10626 return 0; 10627 10628 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 10629 if (!nd) 10630 return -ENOBUFS; 10631 10632 if (req->n_scan_plans == 1 && 10633 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 10634 req->scan_plans[0].interval * 1000)) 10635 return -ENOBUFS; 10636 10637 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 10638 return -ENOBUFS; 10639 10640 if (req->relative_rssi_set) { 10641 struct nl80211_bss_select_rssi_adjust rssi_adjust; 10642 10643 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 10644 req->relative_rssi)) 10645 return -ENOBUFS; 10646 10647 rssi_adjust.band = req->rssi_adjust.band; 10648 rssi_adjust.delta = req->rssi_adjust.delta; 10649 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 10650 sizeof(rssi_adjust), &rssi_adjust)) 10651 return -ENOBUFS; 10652 } 10653 10654 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 10655 if (!freqs) 10656 return -ENOBUFS; 10657 10658 for (i = 0; i < req->n_channels; i++) { 10659 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 10660 return -ENOBUFS; 10661 } 10662 10663 nla_nest_end(msg, freqs); 10664 10665 if (req->n_match_sets) { 10666 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 10667 if (!matches) 10668 return -ENOBUFS; 10669 10670 for (i = 0; i < req->n_match_sets; i++) { 10671 match = nla_nest_start(msg, i); 10672 if (!match) 10673 return -ENOBUFS; 10674 10675 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 10676 req->match_sets[i].ssid.ssid_len, 10677 req->match_sets[i].ssid.ssid)) 10678 return -ENOBUFS; 10679 nla_nest_end(msg, match); 10680 } 10681 nla_nest_end(msg, matches); 10682 } 10683 10684 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 10685 if (!scan_plans) 10686 return -ENOBUFS; 10687 10688 for (i = 0; i < req->n_scan_plans; i++) { 10689 scan_plan = nla_nest_start(msg, i + 1); 10690 if (!scan_plan) 10691 return -ENOBUFS; 10692 10693 if (!scan_plan || 10694 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 10695 req->scan_plans[i].interval) || 10696 (req->scan_plans[i].iterations && 10697 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 10698 req->scan_plans[i].iterations))) 10699 return -ENOBUFS; 10700 nla_nest_end(msg, scan_plan); 10701 } 10702 nla_nest_end(msg, scan_plans); 10703 10704 nla_nest_end(msg, nd); 10705 10706 return 0; 10707 } 10708 10709 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 10710 { 10711 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10712 struct sk_buff *msg; 10713 void *hdr; 10714 u32 size = NLMSG_DEFAULT_SIZE; 10715 10716 if (!rdev->wiphy.wowlan) 10717 return -EOPNOTSUPP; 10718 10719 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 10720 /* adjust size to have room for all the data */ 10721 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 10722 rdev->wiphy.wowlan_config->tcp->payload_len + 10723 rdev->wiphy.wowlan_config->tcp->wake_len + 10724 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 10725 } 10726 10727 msg = nlmsg_new(size, GFP_KERNEL); 10728 if (!msg) 10729 return -ENOMEM; 10730 10731 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10732 NL80211_CMD_GET_WOWLAN); 10733 if (!hdr) 10734 goto nla_put_failure; 10735 10736 if (rdev->wiphy.wowlan_config) { 10737 struct nlattr *nl_wowlan; 10738 10739 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10740 if (!nl_wowlan) 10741 goto nla_put_failure; 10742 10743 if ((rdev->wiphy.wowlan_config->any && 10744 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 10745 (rdev->wiphy.wowlan_config->disconnect && 10746 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 10747 (rdev->wiphy.wowlan_config->magic_pkt && 10748 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 10749 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 10750 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 10751 (rdev->wiphy.wowlan_config->eap_identity_req && 10752 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 10753 (rdev->wiphy.wowlan_config->four_way_handshake && 10754 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 10755 (rdev->wiphy.wowlan_config->rfkill_release && 10756 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 10757 goto nla_put_failure; 10758 10759 if (nl80211_send_wowlan_patterns(msg, rdev)) 10760 goto nla_put_failure; 10761 10762 if (nl80211_send_wowlan_tcp(msg, 10763 rdev->wiphy.wowlan_config->tcp)) 10764 goto nla_put_failure; 10765 10766 if (nl80211_send_wowlan_nd( 10767 msg, 10768 rdev->wiphy.wowlan_config->nd_config)) 10769 goto nla_put_failure; 10770 10771 nla_nest_end(msg, nl_wowlan); 10772 } 10773 10774 genlmsg_end(msg, hdr); 10775 return genlmsg_reply(msg, info); 10776 10777 nla_put_failure: 10778 nlmsg_free(msg); 10779 return -ENOBUFS; 10780 } 10781 10782 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 10783 struct nlattr *attr, 10784 struct cfg80211_wowlan *trig) 10785 { 10786 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 10787 struct cfg80211_wowlan_tcp *cfg; 10788 struct nl80211_wowlan_tcp_data_token *tok = NULL; 10789 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 10790 u32 size; 10791 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 10792 int err, port; 10793 10794 if (!rdev->wiphy.wowlan->tcp) 10795 return -EINVAL; 10796 10797 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr, 10798 nl80211_wowlan_tcp_policy, NULL); 10799 if (err) 10800 return err; 10801 10802 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 10803 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 10804 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 10805 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 10806 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 10807 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 10808 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 10809 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 10810 return -EINVAL; 10811 10812 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 10813 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 10814 return -EINVAL; 10815 10816 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 10817 rdev->wiphy.wowlan->tcp->data_interval_max || 10818 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 10819 return -EINVAL; 10820 10821 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 10822 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 10823 return -EINVAL; 10824 10825 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 10826 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 10827 return -EINVAL; 10828 10829 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 10830 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10831 10832 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10833 tokens_size = tokln - sizeof(*tok); 10834 10835 if (!tok->len || tokens_size % tok->len) 10836 return -EINVAL; 10837 if (!rdev->wiphy.wowlan->tcp->tok) 10838 return -EINVAL; 10839 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 10840 return -EINVAL; 10841 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 10842 return -EINVAL; 10843 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 10844 return -EINVAL; 10845 if (tok->offset + tok->len > data_size) 10846 return -EINVAL; 10847 } 10848 10849 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 10850 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 10851 if (!rdev->wiphy.wowlan->tcp->seq) 10852 return -EINVAL; 10853 if (seq->len == 0 || seq->len > 4) 10854 return -EINVAL; 10855 if (seq->len + seq->offset > data_size) 10856 return -EINVAL; 10857 } 10858 10859 size = sizeof(*cfg); 10860 size += data_size; 10861 size += wake_size + wake_mask_size; 10862 size += tokens_size; 10863 10864 cfg = kzalloc(size, GFP_KERNEL); 10865 if (!cfg) 10866 return -ENOMEM; 10867 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 10868 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 10869 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 10870 ETH_ALEN); 10871 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 10872 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 10873 else 10874 port = 0; 10875 #ifdef CONFIG_INET 10876 /* allocate a socket and port for it and use it */ 10877 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 10878 IPPROTO_TCP, &cfg->sock, 1); 10879 if (err) { 10880 kfree(cfg); 10881 return err; 10882 } 10883 if (inet_csk_get_port(cfg->sock->sk, port)) { 10884 sock_release(cfg->sock); 10885 kfree(cfg); 10886 return -EADDRINUSE; 10887 } 10888 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 10889 #else 10890 if (!port) { 10891 kfree(cfg); 10892 return -EINVAL; 10893 } 10894 cfg->src_port = port; 10895 #endif 10896 10897 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 10898 cfg->payload_len = data_size; 10899 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 10900 memcpy((void *)cfg->payload, 10901 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 10902 data_size); 10903 if (seq) 10904 cfg->payload_seq = *seq; 10905 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 10906 cfg->wake_len = wake_size; 10907 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 10908 memcpy((void *)cfg->wake_data, 10909 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 10910 wake_size); 10911 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 10912 data_size + wake_size; 10913 memcpy((void *)cfg->wake_mask, 10914 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 10915 wake_mask_size); 10916 if (tok) { 10917 cfg->tokens_size = tokens_size; 10918 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 10919 } 10920 10921 trig->tcp = cfg; 10922 10923 return 0; 10924 } 10925 10926 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 10927 const struct wiphy_wowlan_support *wowlan, 10928 struct nlattr *attr, 10929 struct cfg80211_wowlan *trig) 10930 { 10931 struct nlattr **tb; 10932 int err; 10933 10934 tb = kcalloc(NUM_NL80211_ATTR, sizeof(*tb), GFP_KERNEL); 10935 if (!tb) 10936 return -ENOMEM; 10937 10938 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 10939 err = -EOPNOTSUPP; 10940 goto out; 10941 } 10942 10943 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy, 10944 NULL); 10945 if (err) 10946 goto out; 10947 10948 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 10949 wowlan->max_nd_match_sets); 10950 err = PTR_ERR_OR_ZERO(trig->nd_config); 10951 if (err) 10952 trig->nd_config = NULL; 10953 10954 out: 10955 kfree(tb); 10956 return err; 10957 } 10958 10959 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 10960 { 10961 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10962 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 10963 struct cfg80211_wowlan new_triggers = {}; 10964 struct cfg80211_wowlan *ntrig; 10965 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 10966 int err, i; 10967 bool prev_enabled = rdev->wiphy.wowlan_config; 10968 bool regular = false; 10969 10970 if (!wowlan) 10971 return -EOPNOTSUPP; 10972 10973 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 10974 cfg80211_rdev_free_wowlan(rdev); 10975 rdev->wiphy.wowlan_config = NULL; 10976 goto set_wakeup; 10977 } 10978 10979 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG, 10980 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 10981 nl80211_wowlan_policy, info->extack); 10982 if (err) 10983 return err; 10984 10985 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 10986 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 10987 return -EINVAL; 10988 new_triggers.any = true; 10989 } 10990 10991 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 10992 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 10993 return -EINVAL; 10994 new_triggers.disconnect = true; 10995 regular = true; 10996 } 10997 10998 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 10999 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 11000 return -EINVAL; 11001 new_triggers.magic_pkt = true; 11002 regular = true; 11003 } 11004 11005 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 11006 return -EINVAL; 11007 11008 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 11009 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 11010 return -EINVAL; 11011 new_triggers.gtk_rekey_failure = true; 11012 regular = true; 11013 } 11014 11015 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 11016 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 11017 return -EINVAL; 11018 new_triggers.eap_identity_req = true; 11019 regular = true; 11020 } 11021 11022 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 11023 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 11024 return -EINVAL; 11025 new_triggers.four_way_handshake = true; 11026 regular = true; 11027 } 11028 11029 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 11030 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 11031 return -EINVAL; 11032 new_triggers.rfkill_release = true; 11033 regular = true; 11034 } 11035 11036 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 11037 struct nlattr *pat; 11038 int n_patterns = 0; 11039 int rem, pat_len, mask_len, pkt_offset; 11040 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 11041 11042 regular = true; 11043 11044 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 11045 rem) 11046 n_patterns++; 11047 if (n_patterns > wowlan->n_patterns) 11048 return -EINVAL; 11049 11050 new_triggers.patterns = kcalloc(n_patterns, 11051 sizeof(new_triggers.patterns[0]), 11052 GFP_KERNEL); 11053 if (!new_triggers.patterns) 11054 return -ENOMEM; 11055 11056 new_triggers.n_patterns = n_patterns; 11057 i = 0; 11058 11059 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 11060 rem) { 11061 u8 *mask_pat; 11062 11063 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 11064 nl80211_packet_pattern_policy, 11065 info->extack); 11066 if (err) 11067 goto error; 11068 11069 err = -EINVAL; 11070 if (!pat_tb[NL80211_PKTPAT_MASK] || 11071 !pat_tb[NL80211_PKTPAT_PATTERN]) 11072 goto error; 11073 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 11074 mask_len = DIV_ROUND_UP(pat_len, 8); 11075 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 11076 goto error; 11077 if (pat_len > wowlan->pattern_max_len || 11078 pat_len < wowlan->pattern_min_len) 11079 goto error; 11080 11081 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 11082 pkt_offset = 0; 11083 else 11084 pkt_offset = nla_get_u32( 11085 pat_tb[NL80211_PKTPAT_OFFSET]); 11086 if (pkt_offset > wowlan->max_pkt_offset) 11087 goto error; 11088 new_triggers.patterns[i].pkt_offset = pkt_offset; 11089 11090 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 11091 if (!mask_pat) { 11092 err = -ENOMEM; 11093 goto error; 11094 } 11095 new_triggers.patterns[i].mask = mask_pat; 11096 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 11097 mask_len); 11098 mask_pat += mask_len; 11099 new_triggers.patterns[i].pattern = mask_pat; 11100 new_triggers.patterns[i].pattern_len = pat_len; 11101 memcpy(mask_pat, 11102 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 11103 pat_len); 11104 i++; 11105 } 11106 } 11107 11108 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 11109 regular = true; 11110 err = nl80211_parse_wowlan_tcp( 11111 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 11112 &new_triggers); 11113 if (err) 11114 goto error; 11115 } 11116 11117 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 11118 regular = true; 11119 err = nl80211_parse_wowlan_nd( 11120 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 11121 &new_triggers); 11122 if (err) 11123 goto error; 11124 } 11125 11126 /* The 'any' trigger means the device continues operating more or less 11127 * as in its normal operation mode and wakes up the host on most of the 11128 * normal interrupts (like packet RX, ...) 11129 * It therefore makes little sense to combine with the more constrained 11130 * wakeup trigger modes. 11131 */ 11132 if (new_triggers.any && regular) { 11133 err = -EINVAL; 11134 goto error; 11135 } 11136 11137 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 11138 if (!ntrig) { 11139 err = -ENOMEM; 11140 goto error; 11141 } 11142 cfg80211_rdev_free_wowlan(rdev); 11143 rdev->wiphy.wowlan_config = ntrig; 11144 11145 set_wakeup: 11146 if (rdev->ops->set_wakeup && 11147 prev_enabled != !!rdev->wiphy.wowlan_config) 11148 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 11149 11150 return 0; 11151 error: 11152 for (i = 0; i < new_triggers.n_patterns; i++) 11153 kfree(new_triggers.patterns[i].mask); 11154 kfree(new_triggers.patterns); 11155 if (new_triggers.tcp && new_triggers.tcp->sock) 11156 sock_release(new_triggers.tcp->sock); 11157 kfree(new_triggers.tcp); 11158 kfree(new_triggers.nd_config); 11159 return err; 11160 } 11161 #endif 11162 11163 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 11164 struct cfg80211_registered_device *rdev) 11165 { 11166 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 11167 int i, j, pat_len; 11168 struct cfg80211_coalesce_rules *rule; 11169 11170 if (!rdev->coalesce->n_rules) 11171 return 0; 11172 11173 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 11174 if (!nl_rules) 11175 return -ENOBUFS; 11176 11177 for (i = 0; i < rdev->coalesce->n_rules; i++) { 11178 nl_rule = nla_nest_start(msg, i + 1); 11179 if (!nl_rule) 11180 return -ENOBUFS; 11181 11182 rule = &rdev->coalesce->rules[i]; 11183 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 11184 rule->delay)) 11185 return -ENOBUFS; 11186 11187 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 11188 rule->condition)) 11189 return -ENOBUFS; 11190 11191 nl_pats = nla_nest_start(msg, 11192 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 11193 if (!nl_pats) 11194 return -ENOBUFS; 11195 11196 for (j = 0; j < rule->n_patterns; j++) { 11197 nl_pat = nla_nest_start(msg, j + 1); 11198 if (!nl_pat) 11199 return -ENOBUFS; 11200 pat_len = rule->patterns[j].pattern_len; 11201 if (nla_put(msg, NL80211_PKTPAT_MASK, 11202 DIV_ROUND_UP(pat_len, 8), 11203 rule->patterns[j].mask) || 11204 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 11205 rule->patterns[j].pattern) || 11206 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 11207 rule->patterns[j].pkt_offset)) 11208 return -ENOBUFS; 11209 nla_nest_end(msg, nl_pat); 11210 } 11211 nla_nest_end(msg, nl_pats); 11212 nla_nest_end(msg, nl_rule); 11213 } 11214 nla_nest_end(msg, nl_rules); 11215 11216 return 0; 11217 } 11218 11219 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 11220 { 11221 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11222 struct sk_buff *msg; 11223 void *hdr; 11224 11225 if (!rdev->wiphy.coalesce) 11226 return -EOPNOTSUPP; 11227 11228 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11229 if (!msg) 11230 return -ENOMEM; 11231 11232 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11233 NL80211_CMD_GET_COALESCE); 11234 if (!hdr) 11235 goto nla_put_failure; 11236 11237 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 11238 goto nla_put_failure; 11239 11240 genlmsg_end(msg, hdr); 11241 return genlmsg_reply(msg, info); 11242 11243 nla_put_failure: 11244 nlmsg_free(msg); 11245 return -ENOBUFS; 11246 } 11247 11248 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 11249 { 11250 struct cfg80211_coalesce *coalesce = rdev->coalesce; 11251 int i, j; 11252 struct cfg80211_coalesce_rules *rule; 11253 11254 if (!coalesce) 11255 return; 11256 11257 for (i = 0; i < coalesce->n_rules; i++) { 11258 rule = &coalesce->rules[i]; 11259 for (j = 0; j < rule->n_patterns; j++) 11260 kfree(rule->patterns[j].mask); 11261 kfree(rule->patterns); 11262 } 11263 kfree(coalesce->rules); 11264 kfree(coalesce); 11265 rdev->coalesce = NULL; 11266 } 11267 11268 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 11269 struct nlattr *rule, 11270 struct cfg80211_coalesce_rules *new_rule) 11271 { 11272 int err, i; 11273 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 11274 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 11275 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 11276 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 11277 11278 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule, 11279 nl80211_coalesce_policy, NULL); 11280 if (err) 11281 return err; 11282 11283 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 11284 new_rule->delay = 11285 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 11286 if (new_rule->delay > coalesce->max_delay) 11287 return -EINVAL; 11288 11289 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 11290 new_rule->condition = 11291 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 11292 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 11293 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 11294 return -EINVAL; 11295 11296 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 11297 return -EINVAL; 11298 11299 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 11300 rem) 11301 n_patterns++; 11302 if (n_patterns > coalesce->n_patterns) 11303 return -EINVAL; 11304 11305 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 11306 GFP_KERNEL); 11307 if (!new_rule->patterns) 11308 return -ENOMEM; 11309 11310 new_rule->n_patterns = n_patterns; 11311 i = 0; 11312 11313 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 11314 rem) { 11315 u8 *mask_pat; 11316 11317 err = nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 11318 nl80211_packet_pattern_policy, NULL); 11319 if (err) 11320 return err; 11321 11322 if (!pat_tb[NL80211_PKTPAT_MASK] || 11323 !pat_tb[NL80211_PKTPAT_PATTERN]) 11324 return -EINVAL; 11325 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 11326 mask_len = DIV_ROUND_UP(pat_len, 8); 11327 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 11328 return -EINVAL; 11329 if (pat_len > coalesce->pattern_max_len || 11330 pat_len < coalesce->pattern_min_len) 11331 return -EINVAL; 11332 11333 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 11334 pkt_offset = 0; 11335 else 11336 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 11337 if (pkt_offset > coalesce->max_pkt_offset) 11338 return -EINVAL; 11339 new_rule->patterns[i].pkt_offset = pkt_offset; 11340 11341 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 11342 if (!mask_pat) 11343 return -ENOMEM; 11344 11345 new_rule->patterns[i].mask = mask_pat; 11346 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 11347 mask_len); 11348 11349 mask_pat += mask_len; 11350 new_rule->patterns[i].pattern = mask_pat; 11351 new_rule->patterns[i].pattern_len = pat_len; 11352 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 11353 pat_len); 11354 i++; 11355 } 11356 11357 return 0; 11358 } 11359 11360 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 11361 { 11362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11363 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 11364 struct cfg80211_coalesce new_coalesce = {}; 11365 struct cfg80211_coalesce *n_coalesce; 11366 int err, rem_rule, n_rules = 0, i, j; 11367 struct nlattr *rule; 11368 struct cfg80211_coalesce_rules *tmp_rule; 11369 11370 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 11371 return -EOPNOTSUPP; 11372 11373 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 11374 cfg80211_rdev_free_coalesce(rdev); 11375 rdev_set_coalesce(rdev, NULL); 11376 return 0; 11377 } 11378 11379 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 11380 rem_rule) 11381 n_rules++; 11382 if (n_rules > coalesce->n_rules) 11383 return -EINVAL; 11384 11385 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 11386 GFP_KERNEL); 11387 if (!new_coalesce.rules) 11388 return -ENOMEM; 11389 11390 new_coalesce.n_rules = n_rules; 11391 i = 0; 11392 11393 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 11394 rem_rule) { 11395 err = nl80211_parse_coalesce_rule(rdev, rule, 11396 &new_coalesce.rules[i]); 11397 if (err) 11398 goto error; 11399 11400 i++; 11401 } 11402 11403 err = rdev_set_coalesce(rdev, &new_coalesce); 11404 if (err) 11405 goto error; 11406 11407 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 11408 if (!n_coalesce) { 11409 err = -ENOMEM; 11410 goto error; 11411 } 11412 cfg80211_rdev_free_coalesce(rdev); 11413 rdev->coalesce = n_coalesce; 11414 11415 return 0; 11416 error: 11417 for (i = 0; i < new_coalesce.n_rules; i++) { 11418 tmp_rule = &new_coalesce.rules[i]; 11419 for (j = 0; j < tmp_rule->n_patterns; j++) 11420 kfree(tmp_rule->patterns[j].mask); 11421 kfree(tmp_rule->patterns); 11422 } 11423 kfree(new_coalesce.rules); 11424 11425 return err; 11426 } 11427 11428 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 11429 { 11430 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11431 struct net_device *dev = info->user_ptr[1]; 11432 struct wireless_dev *wdev = dev->ieee80211_ptr; 11433 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 11434 struct cfg80211_gtk_rekey_data rekey_data; 11435 int err; 11436 11437 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 11438 return -EINVAL; 11439 11440 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA, 11441 info->attrs[NL80211_ATTR_REKEY_DATA], 11442 nl80211_rekey_policy, info->extack); 11443 if (err) 11444 return err; 11445 11446 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 11447 !tb[NL80211_REKEY_DATA_KCK]) 11448 return -EINVAL; 11449 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 11450 return -ERANGE; 11451 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 11452 return -ERANGE; 11453 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 11454 return -ERANGE; 11455 11456 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 11457 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 11458 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 11459 11460 wdev_lock(wdev); 11461 if (!wdev->current_bss) { 11462 err = -ENOTCONN; 11463 goto out; 11464 } 11465 11466 if (!rdev->ops->set_rekey_data) { 11467 err = -EOPNOTSUPP; 11468 goto out; 11469 } 11470 11471 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 11472 out: 11473 wdev_unlock(wdev); 11474 return err; 11475 } 11476 11477 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 11478 struct genl_info *info) 11479 { 11480 struct net_device *dev = info->user_ptr[1]; 11481 struct wireless_dev *wdev = dev->ieee80211_ptr; 11482 11483 if (wdev->iftype != NL80211_IFTYPE_AP && 11484 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11485 return -EINVAL; 11486 11487 if (wdev->ap_unexpected_nlportid) 11488 return -EBUSY; 11489 11490 wdev->ap_unexpected_nlportid = info->snd_portid; 11491 return 0; 11492 } 11493 11494 static int nl80211_probe_client(struct sk_buff *skb, 11495 struct genl_info *info) 11496 { 11497 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11498 struct net_device *dev = info->user_ptr[1]; 11499 struct wireless_dev *wdev = dev->ieee80211_ptr; 11500 struct sk_buff *msg; 11501 void *hdr; 11502 const u8 *addr; 11503 u64 cookie; 11504 int err; 11505 11506 if (wdev->iftype != NL80211_IFTYPE_AP && 11507 wdev->iftype != NL80211_IFTYPE_P2P_GO) 11508 return -EOPNOTSUPP; 11509 11510 if (!info->attrs[NL80211_ATTR_MAC]) 11511 return -EINVAL; 11512 11513 if (!rdev->ops->probe_client) 11514 return -EOPNOTSUPP; 11515 11516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11517 if (!msg) 11518 return -ENOMEM; 11519 11520 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11521 NL80211_CMD_PROBE_CLIENT); 11522 if (!hdr) { 11523 err = -ENOBUFS; 11524 goto free_msg; 11525 } 11526 11527 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 11528 11529 err = rdev_probe_client(rdev, dev, addr, &cookie); 11530 if (err) 11531 goto free_msg; 11532 11533 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11534 NL80211_ATTR_PAD)) 11535 goto nla_put_failure; 11536 11537 genlmsg_end(msg, hdr); 11538 11539 return genlmsg_reply(msg, info); 11540 11541 nla_put_failure: 11542 err = -ENOBUFS; 11543 free_msg: 11544 nlmsg_free(msg); 11545 return err; 11546 } 11547 11548 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 11549 { 11550 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11551 struct cfg80211_beacon_registration *reg, *nreg; 11552 int rv; 11553 11554 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 11555 return -EOPNOTSUPP; 11556 11557 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 11558 if (!nreg) 11559 return -ENOMEM; 11560 11561 /* First, check if already registered. */ 11562 spin_lock_bh(&rdev->beacon_registrations_lock); 11563 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11564 if (reg->nlportid == info->snd_portid) { 11565 rv = -EALREADY; 11566 goto out_err; 11567 } 11568 } 11569 /* Add it to the list */ 11570 nreg->nlportid = info->snd_portid; 11571 list_add(&nreg->list, &rdev->beacon_registrations); 11572 11573 spin_unlock_bh(&rdev->beacon_registrations_lock); 11574 11575 return 0; 11576 out_err: 11577 spin_unlock_bh(&rdev->beacon_registrations_lock); 11578 kfree(nreg); 11579 return rv; 11580 } 11581 11582 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 11583 { 11584 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11585 struct wireless_dev *wdev = info->user_ptr[1]; 11586 int err; 11587 11588 if (!rdev->ops->start_p2p_device) 11589 return -EOPNOTSUPP; 11590 11591 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11592 return -EOPNOTSUPP; 11593 11594 if (wdev_running(wdev)) 11595 return 0; 11596 11597 if (rfkill_blocked(rdev->rfkill)) 11598 return -ERFKILL; 11599 11600 err = rdev_start_p2p_device(rdev, wdev); 11601 if (err) 11602 return err; 11603 11604 wdev->is_running = true; 11605 rdev->opencount++; 11606 11607 return 0; 11608 } 11609 11610 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 11611 { 11612 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11613 struct wireless_dev *wdev = info->user_ptr[1]; 11614 11615 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11616 return -EOPNOTSUPP; 11617 11618 if (!rdev->ops->stop_p2p_device) 11619 return -EOPNOTSUPP; 11620 11621 cfg80211_stop_p2p_device(rdev, wdev); 11622 11623 return 0; 11624 } 11625 11626 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 11627 { 11628 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11629 struct wireless_dev *wdev = info->user_ptr[1]; 11630 struct cfg80211_nan_conf conf = {}; 11631 int err; 11632 11633 if (wdev->iftype != NL80211_IFTYPE_NAN) 11634 return -EOPNOTSUPP; 11635 11636 if (wdev_running(wdev)) 11637 return -EEXIST; 11638 11639 if (rfkill_blocked(rdev->rfkill)) 11640 return -ERFKILL; 11641 11642 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 11643 return -EINVAL; 11644 11645 conf.master_pref = 11646 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11647 if (!conf.master_pref) 11648 return -EINVAL; 11649 11650 if (info->attrs[NL80211_ATTR_BANDS]) { 11651 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11652 11653 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11654 return -EOPNOTSUPP; 11655 11656 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11657 return -EINVAL; 11658 11659 conf.bands = bands; 11660 } 11661 11662 err = rdev_start_nan(rdev, wdev, &conf); 11663 if (err) 11664 return err; 11665 11666 wdev->is_running = true; 11667 rdev->opencount++; 11668 11669 return 0; 11670 } 11671 11672 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 11673 { 11674 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11675 struct wireless_dev *wdev = info->user_ptr[1]; 11676 11677 if (wdev->iftype != NL80211_IFTYPE_NAN) 11678 return -EOPNOTSUPP; 11679 11680 cfg80211_stop_nan(rdev, wdev); 11681 11682 return 0; 11683 } 11684 11685 static int validate_nan_filter(struct nlattr *filter_attr) 11686 { 11687 struct nlattr *attr; 11688 int len = 0, n_entries = 0, rem; 11689 11690 nla_for_each_nested(attr, filter_attr, rem) { 11691 len += nla_len(attr); 11692 n_entries++; 11693 } 11694 11695 if (len >= U8_MAX) 11696 return -EINVAL; 11697 11698 return n_entries; 11699 } 11700 11701 static int handle_nan_filter(struct nlattr *attr_filter, 11702 struct cfg80211_nan_func *func, 11703 bool tx) 11704 { 11705 struct nlattr *attr; 11706 int n_entries, rem, i; 11707 struct cfg80211_nan_func_filter *filter; 11708 11709 n_entries = validate_nan_filter(attr_filter); 11710 if (n_entries < 0) 11711 return n_entries; 11712 11713 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 11714 11715 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 11716 if (!filter) 11717 return -ENOMEM; 11718 11719 i = 0; 11720 nla_for_each_nested(attr, attr_filter, rem) { 11721 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 11722 filter[i].len = nla_len(attr); 11723 i++; 11724 } 11725 if (tx) { 11726 func->num_tx_filters = n_entries; 11727 func->tx_filters = filter; 11728 } else { 11729 func->num_rx_filters = n_entries; 11730 func->rx_filters = filter; 11731 } 11732 11733 return 0; 11734 } 11735 11736 static int nl80211_nan_add_func(struct sk_buff *skb, 11737 struct genl_info *info) 11738 { 11739 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11740 struct wireless_dev *wdev = info->user_ptr[1]; 11741 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 11742 struct cfg80211_nan_func *func; 11743 struct sk_buff *msg = NULL; 11744 void *hdr = NULL; 11745 int err = 0; 11746 11747 if (wdev->iftype != NL80211_IFTYPE_NAN) 11748 return -EOPNOTSUPP; 11749 11750 if (!wdev_running(wdev)) 11751 return -ENOTCONN; 11752 11753 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 11754 return -EINVAL; 11755 11756 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX, 11757 info->attrs[NL80211_ATTR_NAN_FUNC], 11758 nl80211_nan_func_policy, info->extack); 11759 if (err) 11760 return err; 11761 11762 func = kzalloc(sizeof(*func), GFP_KERNEL); 11763 if (!func) 11764 return -ENOMEM; 11765 11766 func->cookie = wdev->wiphy->cookie_counter++; 11767 11768 if (!tb[NL80211_NAN_FUNC_TYPE] || 11769 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) { 11770 err = -EINVAL; 11771 goto out; 11772 } 11773 11774 11775 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 11776 11777 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 11778 err = -EINVAL; 11779 goto out; 11780 } 11781 11782 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 11783 sizeof(func->service_id)); 11784 11785 func->close_range = 11786 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 11787 11788 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 11789 func->serv_spec_info_len = 11790 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 11791 func->serv_spec_info = 11792 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 11793 func->serv_spec_info_len, 11794 GFP_KERNEL); 11795 if (!func->serv_spec_info) { 11796 err = -ENOMEM; 11797 goto out; 11798 } 11799 } 11800 11801 if (tb[NL80211_NAN_FUNC_TTL]) 11802 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 11803 11804 switch (func->type) { 11805 case NL80211_NAN_FUNC_PUBLISH: 11806 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 11807 err = -EINVAL; 11808 goto out; 11809 } 11810 11811 func->publish_type = 11812 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 11813 func->publish_bcast = 11814 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 11815 11816 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 11817 func->publish_bcast) { 11818 err = -EINVAL; 11819 goto out; 11820 } 11821 break; 11822 case NL80211_NAN_FUNC_SUBSCRIBE: 11823 func->subscribe_active = 11824 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 11825 break; 11826 case NL80211_NAN_FUNC_FOLLOW_UP: 11827 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 11828 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] || 11829 !tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]) { 11830 err = -EINVAL; 11831 goto out; 11832 } 11833 11834 func->followup_id = 11835 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 11836 func->followup_reqid = 11837 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 11838 memcpy(func->followup_dest.addr, 11839 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 11840 sizeof(func->followup_dest.addr)); 11841 if (func->ttl) { 11842 err = -EINVAL; 11843 goto out; 11844 } 11845 break; 11846 default: 11847 err = -EINVAL; 11848 goto out; 11849 } 11850 11851 if (tb[NL80211_NAN_FUNC_SRF]) { 11852 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 11853 11854 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX, 11855 tb[NL80211_NAN_FUNC_SRF], 11856 nl80211_nan_srf_policy, info->extack); 11857 if (err) 11858 goto out; 11859 11860 func->srf_include = 11861 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 11862 11863 if (srf_tb[NL80211_NAN_SRF_BF]) { 11864 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 11865 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 11866 err = -EINVAL; 11867 goto out; 11868 } 11869 11870 func->srf_bf_len = 11871 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 11872 func->srf_bf = 11873 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 11874 func->srf_bf_len, GFP_KERNEL); 11875 if (!func->srf_bf) { 11876 err = -ENOMEM; 11877 goto out; 11878 } 11879 11880 func->srf_bf_idx = 11881 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 11882 } else { 11883 struct nlattr *attr, *mac_attr = 11884 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 11885 int n_entries, rem, i = 0; 11886 11887 if (!mac_attr) { 11888 err = -EINVAL; 11889 goto out; 11890 } 11891 11892 n_entries = validate_acl_mac_addrs(mac_attr); 11893 if (n_entries <= 0) { 11894 err = -EINVAL; 11895 goto out; 11896 } 11897 11898 func->srf_num_macs = n_entries; 11899 func->srf_macs = 11900 kcalloc(n_entries, sizeof(*func->srf_macs), 11901 GFP_KERNEL); 11902 if (!func->srf_macs) { 11903 err = -ENOMEM; 11904 goto out; 11905 } 11906 11907 nla_for_each_nested(attr, mac_attr, rem) 11908 memcpy(func->srf_macs[i++].addr, nla_data(attr), 11909 sizeof(*func->srf_macs)); 11910 } 11911 } 11912 11913 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 11914 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 11915 func, true); 11916 if (err) 11917 goto out; 11918 } 11919 11920 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 11921 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 11922 func, false); 11923 if (err) 11924 goto out; 11925 } 11926 11927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11928 if (!msg) { 11929 err = -ENOMEM; 11930 goto out; 11931 } 11932 11933 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11934 NL80211_CMD_ADD_NAN_FUNCTION); 11935 /* This can't really happen - we just allocated 4KB */ 11936 if (WARN_ON(!hdr)) { 11937 err = -ENOMEM; 11938 goto out; 11939 } 11940 11941 err = rdev_add_nan_func(rdev, wdev, func); 11942 out: 11943 if (err < 0) { 11944 cfg80211_free_nan_func(func); 11945 nlmsg_free(msg); 11946 return err; 11947 } 11948 11949 /* propagate the instance id and cookie to userspace */ 11950 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 11951 NL80211_ATTR_PAD)) 11952 goto nla_put_failure; 11953 11954 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11955 if (!func_attr) 11956 goto nla_put_failure; 11957 11958 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 11959 func->instance_id)) 11960 goto nla_put_failure; 11961 11962 nla_nest_end(msg, func_attr); 11963 11964 genlmsg_end(msg, hdr); 11965 return genlmsg_reply(msg, info); 11966 11967 nla_put_failure: 11968 nlmsg_free(msg); 11969 return -ENOBUFS; 11970 } 11971 11972 static int nl80211_nan_del_func(struct sk_buff *skb, 11973 struct genl_info *info) 11974 { 11975 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11976 struct wireless_dev *wdev = info->user_ptr[1]; 11977 u64 cookie; 11978 11979 if (wdev->iftype != NL80211_IFTYPE_NAN) 11980 return -EOPNOTSUPP; 11981 11982 if (!wdev_running(wdev)) 11983 return -ENOTCONN; 11984 11985 if (!info->attrs[NL80211_ATTR_COOKIE]) 11986 return -EINVAL; 11987 11988 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11989 11990 rdev_del_nan_func(rdev, wdev, cookie); 11991 11992 return 0; 11993 } 11994 11995 static int nl80211_nan_change_config(struct sk_buff *skb, 11996 struct genl_info *info) 11997 { 11998 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11999 struct wireless_dev *wdev = info->user_ptr[1]; 12000 struct cfg80211_nan_conf conf = {}; 12001 u32 changed = 0; 12002 12003 if (wdev->iftype != NL80211_IFTYPE_NAN) 12004 return -EOPNOTSUPP; 12005 12006 if (!wdev_running(wdev)) 12007 return -ENOTCONN; 12008 12009 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 12010 conf.master_pref = 12011 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 12012 if (conf.master_pref <= 1 || conf.master_pref == 255) 12013 return -EINVAL; 12014 12015 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 12016 } 12017 12018 if (info->attrs[NL80211_ATTR_BANDS]) { 12019 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 12020 12021 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 12022 return -EOPNOTSUPP; 12023 12024 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 12025 return -EINVAL; 12026 12027 conf.bands = bands; 12028 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 12029 } 12030 12031 if (!changed) 12032 return -EINVAL; 12033 12034 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 12035 } 12036 12037 void cfg80211_nan_match(struct wireless_dev *wdev, 12038 struct cfg80211_nan_match_params *match, gfp_t gfp) 12039 { 12040 struct wiphy *wiphy = wdev->wiphy; 12041 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12042 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 12043 struct sk_buff *msg; 12044 void *hdr; 12045 12046 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 12047 return; 12048 12049 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12050 if (!msg) 12051 return; 12052 12053 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 12054 if (!hdr) { 12055 nlmsg_free(msg); 12056 return; 12057 } 12058 12059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12060 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12061 wdev->netdev->ifindex)) || 12062 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12063 NL80211_ATTR_PAD)) 12064 goto nla_put_failure; 12065 12066 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 12067 NL80211_ATTR_PAD) || 12068 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 12069 goto nla_put_failure; 12070 12071 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH); 12072 if (!match_attr) 12073 goto nla_put_failure; 12074 12075 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL); 12076 if (!local_func_attr) 12077 goto nla_put_failure; 12078 12079 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 12080 goto nla_put_failure; 12081 12082 nla_nest_end(msg, local_func_attr); 12083 12084 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER); 12085 if (!peer_func_attr) 12086 goto nla_put_failure; 12087 12088 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 12089 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 12090 goto nla_put_failure; 12091 12092 if (match->info && match->info_len && 12093 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 12094 match->info)) 12095 goto nla_put_failure; 12096 12097 nla_nest_end(msg, peer_func_attr); 12098 nla_nest_end(msg, match_attr); 12099 genlmsg_end(msg, hdr); 12100 12101 if (!wdev->owner_nlportid) 12102 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 12103 msg, 0, NL80211_MCGRP_NAN, gfp); 12104 else 12105 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 12106 wdev->owner_nlportid); 12107 12108 return; 12109 12110 nla_put_failure: 12111 nlmsg_free(msg); 12112 } 12113 EXPORT_SYMBOL(cfg80211_nan_match); 12114 12115 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 12116 u8 inst_id, 12117 enum nl80211_nan_func_term_reason reason, 12118 u64 cookie, gfp_t gfp) 12119 { 12120 struct wiphy *wiphy = wdev->wiphy; 12121 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12122 struct sk_buff *msg; 12123 struct nlattr *func_attr; 12124 void *hdr; 12125 12126 if (WARN_ON(!inst_id)) 12127 return; 12128 12129 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12130 if (!msg) 12131 return; 12132 12133 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 12134 if (!hdr) { 12135 nlmsg_free(msg); 12136 return; 12137 } 12138 12139 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12140 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12141 wdev->netdev->ifindex)) || 12142 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12143 NL80211_ATTR_PAD)) 12144 goto nla_put_failure; 12145 12146 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12147 NL80211_ATTR_PAD)) 12148 goto nla_put_failure; 12149 12150 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 12151 if (!func_attr) 12152 goto nla_put_failure; 12153 12154 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 12155 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 12156 goto nla_put_failure; 12157 12158 nla_nest_end(msg, func_attr); 12159 genlmsg_end(msg, hdr); 12160 12161 if (!wdev->owner_nlportid) 12162 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 12163 msg, 0, NL80211_MCGRP_NAN, gfp); 12164 else 12165 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 12166 wdev->owner_nlportid); 12167 12168 return; 12169 12170 nla_put_failure: 12171 nlmsg_free(msg); 12172 } 12173 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 12174 12175 static int nl80211_get_protocol_features(struct sk_buff *skb, 12176 struct genl_info *info) 12177 { 12178 void *hdr; 12179 struct sk_buff *msg; 12180 12181 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12182 if (!msg) 12183 return -ENOMEM; 12184 12185 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 12186 NL80211_CMD_GET_PROTOCOL_FEATURES); 12187 if (!hdr) 12188 goto nla_put_failure; 12189 12190 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 12191 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 12192 goto nla_put_failure; 12193 12194 genlmsg_end(msg, hdr); 12195 return genlmsg_reply(msg, info); 12196 12197 nla_put_failure: 12198 kfree_skb(msg); 12199 return -ENOBUFS; 12200 } 12201 12202 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 12203 { 12204 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12205 struct cfg80211_update_ft_ies_params ft_params; 12206 struct net_device *dev = info->user_ptr[1]; 12207 12208 if (!rdev->ops->update_ft_ies) 12209 return -EOPNOTSUPP; 12210 12211 if (!info->attrs[NL80211_ATTR_MDID] || 12212 !info->attrs[NL80211_ATTR_IE] || 12213 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 12214 return -EINVAL; 12215 12216 memset(&ft_params, 0, sizeof(ft_params)); 12217 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 12218 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 12219 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 12220 12221 return rdev_update_ft_ies(rdev, dev, &ft_params); 12222 } 12223 12224 static int nl80211_crit_protocol_start(struct sk_buff *skb, 12225 struct genl_info *info) 12226 { 12227 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12228 struct wireless_dev *wdev = info->user_ptr[1]; 12229 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 12230 u16 duration; 12231 int ret; 12232 12233 if (!rdev->ops->crit_proto_start) 12234 return -EOPNOTSUPP; 12235 12236 if (WARN_ON(!rdev->ops->crit_proto_stop)) 12237 return -EINVAL; 12238 12239 if (rdev->crit_proto_nlportid) 12240 return -EBUSY; 12241 12242 /* determine protocol if provided */ 12243 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 12244 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 12245 12246 if (proto >= NUM_NL80211_CRIT_PROTO) 12247 return -EINVAL; 12248 12249 /* timeout must be provided */ 12250 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 12251 return -EINVAL; 12252 12253 duration = 12254 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 12255 12256 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 12257 return -ERANGE; 12258 12259 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 12260 if (!ret) 12261 rdev->crit_proto_nlportid = info->snd_portid; 12262 12263 return ret; 12264 } 12265 12266 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 12267 struct genl_info *info) 12268 { 12269 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12270 struct wireless_dev *wdev = info->user_ptr[1]; 12271 12272 if (!rdev->ops->crit_proto_stop) 12273 return -EOPNOTSUPP; 12274 12275 if (rdev->crit_proto_nlportid) { 12276 rdev->crit_proto_nlportid = 0; 12277 rdev_crit_proto_stop(rdev, wdev); 12278 } 12279 return 0; 12280 } 12281 12282 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 12283 { 12284 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12285 struct wireless_dev *wdev = 12286 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 12287 int i, err; 12288 u32 vid, subcmd; 12289 12290 if (!rdev->wiphy.vendor_commands) 12291 return -EOPNOTSUPP; 12292 12293 if (IS_ERR(wdev)) { 12294 err = PTR_ERR(wdev); 12295 if (err != -EINVAL) 12296 return err; 12297 wdev = NULL; 12298 } else if (wdev->wiphy != &rdev->wiphy) { 12299 return -EINVAL; 12300 } 12301 12302 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 12303 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 12304 return -EINVAL; 12305 12306 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 12307 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 12308 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 12309 const struct wiphy_vendor_command *vcmd; 12310 void *data = NULL; 12311 int len = 0; 12312 12313 vcmd = &rdev->wiphy.vendor_commands[i]; 12314 12315 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 12316 continue; 12317 12318 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 12319 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 12320 if (!wdev) 12321 return -EINVAL; 12322 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 12323 !wdev->netdev) 12324 return -EINVAL; 12325 12326 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 12327 if (!wdev_running(wdev)) 12328 return -ENETDOWN; 12329 } 12330 12331 if (!vcmd->doit) 12332 return -EOPNOTSUPP; 12333 } else { 12334 wdev = NULL; 12335 } 12336 12337 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 12338 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 12339 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 12340 } 12341 12342 rdev->cur_cmd_info = info; 12343 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 12344 data, len); 12345 rdev->cur_cmd_info = NULL; 12346 return err; 12347 } 12348 12349 return -EOPNOTSUPP; 12350 } 12351 12352 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 12353 struct netlink_callback *cb, 12354 struct cfg80211_registered_device **rdev, 12355 struct wireless_dev **wdev) 12356 { 12357 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 12358 u32 vid, subcmd; 12359 unsigned int i; 12360 int vcmd_idx = -1; 12361 int err; 12362 void *data = NULL; 12363 unsigned int data_len = 0; 12364 12365 if (cb->args[0]) { 12366 /* subtract the 1 again here */ 12367 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 12368 struct wireless_dev *tmp; 12369 12370 if (!wiphy) 12371 return -ENODEV; 12372 *rdev = wiphy_to_rdev(wiphy); 12373 *wdev = NULL; 12374 12375 if (cb->args[1]) { 12376 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 12377 if (tmp->identifier == cb->args[1] - 1) { 12378 *wdev = tmp; 12379 break; 12380 } 12381 } 12382 } 12383 12384 /* keep rtnl locked in successful case */ 12385 return 0; 12386 } 12387 12388 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf, 12389 nl80211_fam.maxattr, nl80211_policy, NULL); 12390 if (err) 12391 return err; 12392 12393 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 12394 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) 12395 return -EINVAL; 12396 12397 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf); 12398 if (IS_ERR(*wdev)) 12399 *wdev = NULL; 12400 12401 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 12402 if (IS_ERR(*rdev)) 12403 return PTR_ERR(*rdev); 12404 12405 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 12406 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 12407 12408 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 12409 const struct wiphy_vendor_command *vcmd; 12410 12411 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 12412 12413 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 12414 continue; 12415 12416 if (!vcmd->dumpit) 12417 return -EOPNOTSUPP; 12418 12419 vcmd_idx = i; 12420 break; 12421 } 12422 12423 if (vcmd_idx < 0) 12424 return -EOPNOTSUPP; 12425 12426 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 12427 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 12428 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 12429 } 12430 12431 /* 0 is the first index - add 1 to parse only once */ 12432 cb->args[0] = (*rdev)->wiphy_idx + 1; 12433 /* add 1 to know if it was NULL */ 12434 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 12435 cb->args[2] = vcmd_idx; 12436 cb->args[3] = (unsigned long)data; 12437 cb->args[4] = data_len; 12438 12439 /* keep rtnl locked in successful case */ 12440 return 0; 12441 } 12442 12443 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 12444 struct netlink_callback *cb) 12445 { 12446 struct cfg80211_registered_device *rdev; 12447 struct wireless_dev *wdev; 12448 unsigned int vcmd_idx; 12449 const struct wiphy_vendor_command *vcmd; 12450 void *data; 12451 int data_len; 12452 int err; 12453 struct nlattr *vendor_data; 12454 12455 rtnl_lock(); 12456 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 12457 if (err) 12458 goto out; 12459 12460 vcmd_idx = cb->args[2]; 12461 data = (void *)cb->args[3]; 12462 data_len = cb->args[4]; 12463 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 12464 12465 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 12466 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 12467 if (!wdev) { 12468 err = -EINVAL; 12469 goto out; 12470 } 12471 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 12472 !wdev->netdev) { 12473 err = -EINVAL; 12474 goto out; 12475 } 12476 12477 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 12478 if (!wdev_running(wdev)) { 12479 err = -ENETDOWN; 12480 goto out; 12481 } 12482 } 12483 } 12484 12485 while (1) { 12486 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 12487 cb->nlh->nlmsg_seq, NLM_F_MULTI, 12488 NL80211_CMD_VENDOR); 12489 if (!hdr) 12490 break; 12491 12492 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12493 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 12494 wdev_id(wdev), 12495 NL80211_ATTR_PAD))) { 12496 genlmsg_cancel(skb, hdr); 12497 break; 12498 } 12499 12500 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 12501 if (!vendor_data) { 12502 genlmsg_cancel(skb, hdr); 12503 break; 12504 } 12505 12506 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 12507 (unsigned long *)&cb->args[5]); 12508 nla_nest_end(skb, vendor_data); 12509 12510 if (err == -ENOBUFS || err == -ENOENT) { 12511 genlmsg_cancel(skb, hdr); 12512 break; 12513 } else if (err) { 12514 genlmsg_cancel(skb, hdr); 12515 goto out; 12516 } 12517 12518 genlmsg_end(skb, hdr); 12519 } 12520 12521 err = skb->len; 12522 out: 12523 rtnl_unlock(); 12524 return err; 12525 } 12526 12527 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 12528 enum nl80211_commands cmd, 12529 enum nl80211_attrs attr, 12530 int approxlen) 12531 { 12532 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12533 12534 if (WARN_ON(!rdev->cur_cmd_info)) 12535 return NULL; 12536 12537 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 12538 rdev->cur_cmd_info->snd_portid, 12539 rdev->cur_cmd_info->snd_seq, 12540 cmd, attr, NULL, GFP_KERNEL); 12541 } 12542 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 12543 12544 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 12545 { 12546 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 12547 void *hdr = ((void **)skb->cb)[1]; 12548 struct nlattr *data = ((void **)skb->cb)[2]; 12549 12550 /* clear CB data for netlink core to own from now on */ 12551 memset(skb->cb, 0, sizeof(skb->cb)); 12552 12553 if (WARN_ON(!rdev->cur_cmd_info)) { 12554 kfree_skb(skb); 12555 return -EINVAL; 12556 } 12557 12558 nla_nest_end(skb, data); 12559 genlmsg_end(skb, hdr); 12560 return genlmsg_reply(skb, rdev->cur_cmd_info); 12561 } 12562 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 12563 12564 static int nl80211_set_qos_map(struct sk_buff *skb, 12565 struct genl_info *info) 12566 { 12567 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12568 struct cfg80211_qos_map *qos_map = NULL; 12569 struct net_device *dev = info->user_ptr[1]; 12570 u8 *pos, len, num_des, des_len, des; 12571 int ret; 12572 12573 if (!rdev->ops->set_qos_map) 12574 return -EOPNOTSUPP; 12575 12576 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 12577 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 12578 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 12579 12580 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 12581 len > IEEE80211_QOS_MAP_LEN_MAX) 12582 return -EINVAL; 12583 12584 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 12585 if (!qos_map) 12586 return -ENOMEM; 12587 12588 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 12589 if (num_des) { 12590 des_len = num_des * 12591 sizeof(struct cfg80211_dscp_exception); 12592 memcpy(qos_map->dscp_exception, pos, des_len); 12593 qos_map->num_des = num_des; 12594 for (des = 0; des < num_des; des++) { 12595 if (qos_map->dscp_exception[des].up > 7) { 12596 kfree(qos_map); 12597 return -EINVAL; 12598 } 12599 } 12600 pos += des_len; 12601 } 12602 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 12603 } 12604 12605 wdev_lock(dev->ieee80211_ptr); 12606 ret = nl80211_key_allowed(dev->ieee80211_ptr); 12607 if (!ret) 12608 ret = rdev_set_qos_map(rdev, dev, qos_map); 12609 wdev_unlock(dev->ieee80211_ptr); 12610 12611 kfree(qos_map); 12612 return ret; 12613 } 12614 12615 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 12616 { 12617 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12618 struct net_device *dev = info->user_ptr[1]; 12619 struct wireless_dev *wdev = dev->ieee80211_ptr; 12620 const u8 *peer; 12621 u8 tsid, up; 12622 u16 admitted_time = 0; 12623 int err; 12624 12625 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 12626 return -EOPNOTSUPP; 12627 12628 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 12629 !info->attrs[NL80211_ATTR_USER_PRIO]) 12630 return -EINVAL; 12631 12632 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12633 if (tsid >= IEEE80211_NUM_TIDS) 12634 return -EINVAL; 12635 12636 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 12637 if (up >= IEEE80211_NUM_UPS) 12638 return -EINVAL; 12639 12640 /* WMM uses TIDs 0-7 even for TSPEC */ 12641 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 12642 /* TODO: handle 802.11 TSPEC/admission control 12643 * need more attributes for that (e.g. BA session requirement); 12644 * change the WMM adminssion test above to allow both then 12645 */ 12646 return -EINVAL; 12647 } 12648 12649 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12650 12651 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 12652 admitted_time = 12653 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 12654 if (!admitted_time) 12655 return -EINVAL; 12656 } 12657 12658 wdev_lock(wdev); 12659 switch (wdev->iftype) { 12660 case NL80211_IFTYPE_STATION: 12661 case NL80211_IFTYPE_P2P_CLIENT: 12662 if (wdev->current_bss) 12663 break; 12664 err = -ENOTCONN; 12665 goto out; 12666 default: 12667 err = -EOPNOTSUPP; 12668 goto out; 12669 } 12670 12671 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 12672 12673 out: 12674 wdev_unlock(wdev); 12675 return err; 12676 } 12677 12678 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 12679 { 12680 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12681 struct net_device *dev = info->user_ptr[1]; 12682 struct wireless_dev *wdev = dev->ieee80211_ptr; 12683 const u8 *peer; 12684 u8 tsid; 12685 int err; 12686 12687 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 12688 return -EINVAL; 12689 12690 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12691 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12692 12693 wdev_lock(wdev); 12694 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 12695 wdev_unlock(wdev); 12696 12697 return err; 12698 } 12699 12700 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 12701 struct genl_info *info) 12702 { 12703 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12704 struct net_device *dev = info->user_ptr[1]; 12705 struct wireless_dev *wdev = dev->ieee80211_ptr; 12706 struct cfg80211_chan_def chandef = {}; 12707 const u8 *addr; 12708 u8 oper_class; 12709 int err; 12710 12711 if (!rdev->ops->tdls_channel_switch || 12712 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12713 return -EOPNOTSUPP; 12714 12715 switch (dev->ieee80211_ptr->iftype) { 12716 case NL80211_IFTYPE_STATION: 12717 case NL80211_IFTYPE_P2P_CLIENT: 12718 break; 12719 default: 12720 return -EOPNOTSUPP; 12721 } 12722 12723 if (!info->attrs[NL80211_ATTR_MAC] || 12724 !info->attrs[NL80211_ATTR_OPER_CLASS]) 12725 return -EINVAL; 12726 12727 err = nl80211_parse_chandef(rdev, info, &chandef); 12728 if (err) 12729 return err; 12730 12731 /* 12732 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 12733 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 12734 * specification is not defined for them. 12735 */ 12736 if (chandef.chan->band == NL80211_BAND_2GHZ && 12737 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 12738 chandef.width != NL80211_CHAN_WIDTH_20) 12739 return -EINVAL; 12740 12741 /* we will be active on the TDLS link */ 12742 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 12743 wdev->iftype)) 12744 return -EINVAL; 12745 12746 /* don't allow switching to DFS channels */ 12747 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 12748 return -EINVAL; 12749 12750 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12751 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 12752 12753 wdev_lock(wdev); 12754 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 12755 wdev_unlock(wdev); 12756 12757 return err; 12758 } 12759 12760 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 12761 struct genl_info *info) 12762 { 12763 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12764 struct net_device *dev = info->user_ptr[1]; 12765 struct wireless_dev *wdev = dev->ieee80211_ptr; 12766 const u8 *addr; 12767 12768 if (!rdev->ops->tdls_channel_switch || 12769 !rdev->ops->tdls_cancel_channel_switch || 12770 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12771 return -EOPNOTSUPP; 12772 12773 switch (dev->ieee80211_ptr->iftype) { 12774 case NL80211_IFTYPE_STATION: 12775 case NL80211_IFTYPE_P2P_CLIENT: 12776 break; 12777 default: 12778 return -EOPNOTSUPP; 12779 } 12780 12781 if (!info->attrs[NL80211_ATTR_MAC]) 12782 return -EINVAL; 12783 12784 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12785 12786 wdev_lock(wdev); 12787 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 12788 wdev_unlock(wdev); 12789 12790 return 0; 12791 } 12792 12793 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 12794 struct genl_info *info) 12795 { 12796 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12797 struct net_device *dev = info->user_ptr[1]; 12798 struct wireless_dev *wdev = dev->ieee80211_ptr; 12799 const struct nlattr *nla; 12800 bool enabled; 12801 12802 if (!rdev->ops->set_multicast_to_unicast) 12803 return -EOPNOTSUPP; 12804 12805 if (wdev->iftype != NL80211_IFTYPE_AP && 12806 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12807 return -EOPNOTSUPP; 12808 12809 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 12810 enabled = nla_get_flag(nla); 12811 12812 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 12813 } 12814 12815 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 12816 { 12817 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12818 struct net_device *dev = info->user_ptr[1]; 12819 struct wireless_dev *wdev = dev->ieee80211_ptr; 12820 struct cfg80211_pmk_conf pmk_conf = {}; 12821 int ret; 12822 12823 if (wdev->iftype != NL80211_IFTYPE_STATION && 12824 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12825 return -EOPNOTSUPP; 12826 12827 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12828 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12829 return -EOPNOTSUPP; 12830 12831 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 12832 return -EINVAL; 12833 12834 wdev_lock(wdev); 12835 if (!wdev->current_bss) { 12836 ret = -ENOTCONN; 12837 goto out; 12838 } 12839 12840 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12841 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) { 12842 ret = -EINVAL; 12843 goto out; 12844 } 12845 12846 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 12847 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 12848 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 12849 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) { 12850 ret = -EINVAL; 12851 goto out; 12852 } 12853 12854 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) { 12855 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12856 12857 if (r0_name_len != WLAN_PMK_NAME_LEN) { 12858 ret = -EINVAL; 12859 goto out; 12860 } 12861 12862 pmk_conf.pmk_r0_name = 12863 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12864 } 12865 12866 ret = rdev_set_pmk(rdev, dev, &pmk_conf); 12867 out: 12868 wdev_unlock(wdev); 12869 return ret; 12870 } 12871 12872 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 12873 { 12874 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12875 struct net_device *dev = info->user_ptr[1]; 12876 struct wireless_dev *wdev = dev->ieee80211_ptr; 12877 const u8 *aa; 12878 int ret; 12879 12880 if (wdev->iftype != NL80211_IFTYPE_STATION && 12881 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12882 return -EOPNOTSUPP; 12883 12884 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12885 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12886 return -EOPNOTSUPP; 12887 12888 if (!info->attrs[NL80211_ATTR_MAC]) 12889 return -EINVAL; 12890 12891 wdev_lock(wdev); 12892 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12893 ret = rdev_del_pmk(rdev, dev, aa); 12894 wdev_unlock(wdev); 12895 12896 return ret; 12897 } 12898 12899 static int nl80211_external_auth(struct sk_buff *skb, struct genl_info *info) 12900 { 12901 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12902 struct net_device *dev = info->user_ptr[1]; 12903 struct cfg80211_external_auth_params params; 12904 12905 if (!rdev->ops->external_auth) 12906 return -EOPNOTSUPP; 12907 12908 if (!info->attrs[NL80211_ATTR_SSID]) 12909 return -EINVAL; 12910 12911 if (!info->attrs[NL80211_ATTR_BSSID]) 12912 return -EINVAL; 12913 12914 if (!info->attrs[NL80211_ATTR_STATUS_CODE]) 12915 return -EINVAL; 12916 12917 memset(¶ms, 0, sizeof(params)); 12918 12919 params.ssid.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 12920 if (params.ssid.ssid_len == 0 || 12921 params.ssid.ssid_len > IEEE80211_MAX_SSID_LEN) 12922 return -EINVAL; 12923 memcpy(params.ssid.ssid, nla_data(info->attrs[NL80211_ATTR_SSID]), 12924 params.ssid.ssid_len); 12925 12926 memcpy(params.bssid, nla_data(info->attrs[NL80211_ATTR_BSSID]), 12927 ETH_ALEN); 12928 12929 params.status = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 12930 12931 return rdev_external_auth(rdev, dev, ¶ms); 12932 } 12933 12934 static int nl80211_tx_control_port(struct sk_buff *skb, struct genl_info *info) 12935 { 12936 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12937 struct net_device *dev = info->user_ptr[1]; 12938 struct wireless_dev *wdev = dev->ieee80211_ptr; 12939 const u8 *buf; 12940 size_t len; 12941 u8 *dest; 12942 u16 proto; 12943 bool noencrypt; 12944 int err; 12945 12946 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12947 NL80211_EXT_FEATURE_CONTROL_PORT_OVER_NL80211)) 12948 return -EOPNOTSUPP; 12949 12950 if (!rdev->ops->tx_control_port) 12951 return -EOPNOTSUPP; 12952 12953 if (!info->attrs[NL80211_ATTR_FRAME] || 12954 !info->attrs[NL80211_ATTR_MAC] || 12955 !info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 12956 GENL_SET_ERR_MSG(info, "Frame, MAC or ethertype missing"); 12957 return -EINVAL; 12958 } 12959 12960 wdev_lock(wdev); 12961 12962 switch (wdev->iftype) { 12963 case NL80211_IFTYPE_AP: 12964 case NL80211_IFTYPE_P2P_GO: 12965 case NL80211_IFTYPE_MESH_POINT: 12966 break; 12967 case NL80211_IFTYPE_ADHOC: 12968 case NL80211_IFTYPE_STATION: 12969 case NL80211_IFTYPE_P2P_CLIENT: 12970 if (wdev->current_bss) 12971 break; 12972 err = -ENOTCONN; 12973 goto out; 12974 default: 12975 err = -EOPNOTSUPP; 12976 goto out; 12977 } 12978 12979 wdev_unlock(wdev); 12980 12981 buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 12982 len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 12983 dest = nla_data(info->attrs[NL80211_ATTR_MAC]); 12984 proto = nla_get_u16(info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 12985 noencrypt = 12986 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]); 12987 12988 return rdev_tx_control_port(rdev, dev, buf, len, 12989 dest, cpu_to_be16(proto), noencrypt); 12990 12991 out: 12992 wdev_unlock(wdev); 12993 return err; 12994 } 12995 12996 #define NL80211_FLAG_NEED_WIPHY 0x01 12997 #define NL80211_FLAG_NEED_NETDEV 0x02 12998 #define NL80211_FLAG_NEED_RTNL 0x04 12999 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 13000 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 13001 NL80211_FLAG_CHECK_NETDEV_UP) 13002 #define NL80211_FLAG_NEED_WDEV 0x10 13003 /* If a netdev is associated, it must be UP, P2P must be started */ 13004 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 13005 NL80211_FLAG_CHECK_NETDEV_UP) 13006 #define NL80211_FLAG_CLEAR_SKB 0x20 13007 13008 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 13009 struct genl_info *info) 13010 { 13011 struct cfg80211_registered_device *rdev; 13012 struct wireless_dev *wdev; 13013 struct net_device *dev; 13014 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 13015 13016 if (rtnl) 13017 rtnl_lock(); 13018 13019 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 13020 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 13021 if (IS_ERR(rdev)) { 13022 if (rtnl) 13023 rtnl_unlock(); 13024 return PTR_ERR(rdev); 13025 } 13026 info->user_ptr[0] = rdev; 13027 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 13028 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 13029 ASSERT_RTNL(); 13030 13031 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 13032 info->attrs); 13033 if (IS_ERR(wdev)) { 13034 if (rtnl) 13035 rtnl_unlock(); 13036 return PTR_ERR(wdev); 13037 } 13038 13039 dev = wdev->netdev; 13040 rdev = wiphy_to_rdev(wdev->wiphy); 13041 13042 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 13043 if (!dev) { 13044 if (rtnl) 13045 rtnl_unlock(); 13046 return -EINVAL; 13047 } 13048 13049 info->user_ptr[1] = dev; 13050 } else { 13051 info->user_ptr[1] = wdev; 13052 } 13053 13054 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 13055 !wdev_running(wdev)) { 13056 if (rtnl) 13057 rtnl_unlock(); 13058 return -ENETDOWN; 13059 } 13060 13061 if (dev) 13062 dev_hold(dev); 13063 13064 info->user_ptr[0] = rdev; 13065 } 13066 13067 return 0; 13068 } 13069 13070 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 13071 struct genl_info *info) 13072 { 13073 if (info->user_ptr[1]) { 13074 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 13075 struct wireless_dev *wdev = info->user_ptr[1]; 13076 13077 if (wdev->netdev) 13078 dev_put(wdev->netdev); 13079 } else { 13080 dev_put(info->user_ptr[1]); 13081 } 13082 } 13083 13084 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 13085 rtnl_unlock(); 13086 13087 /* If needed, clear the netlink message payload from the SKB 13088 * as it might contain key data that shouldn't stick around on 13089 * the heap after the SKB is freed. The netlink message header 13090 * is still needed for further processing, so leave it intact. 13091 */ 13092 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 13093 struct nlmsghdr *nlh = nlmsg_hdr(skb); 13094 13095 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 13096 } 13097 } 13098 13099 static const struct genl_ops nl80211_ops[] = { 13100 { 13101 .cmd = NL80211_CMD_GET_WIPHY, 13102 .doit = nl80211_get_wiphy, 13103 .dumpit = nl80211_dump_wiphy, 13104 .done = nl80211_dump_wiphy_done, 13105 .policy = nl80211_policy, 13106 /* can be retrieved by unprivileged users */ 13107 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13108 NL80211_FLAG_NEED_RTNL, 13109 }, 13110 { 13111 .cmd = NL80211_CMD_SET_WIPHY, 13112 .doit = nl80211_set_wiphy, 13113 .policy = nl80211_policy, 13114 .flags = GENL_UNS_ADMIN_PERM, 13115 .internal_flags = NL80211_FLAG_NEED_RTNL, 13116 }, 13117 { 13118 .cmd = NL80211_CMD_GET_INTERFACE, 13119 .doit = nl80211_get_interface, 13120 .dumpit = nl80211_dump_interface, 13121 .policy = nl80211_policy, 13122 /* can be retrieved by unprivileged users */ 13123 .internal_flags = NL80211_FLAG_NEED_WDEV | 13124 NL80211_FLAG_NEED_RTNL, 13125 }, 13126 { 13127 .cmd = NL80211_CMD_SET_INTERFACE, 13128 .doit = nl80211_set_interface, 13129 .policy = nl80211_policy, 13130 .flags = GENL_UNS_ADMIN_PERM, 13131 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13132 NL80211_FLAG_NEED_RTNL, 13133 }, 13134 { 13135 .cmd = NL80211_CMD_NEW_INTERFACE, 13136 .doit = nl80211_new_interface, 13137 .policy = nl80211_policy, 13138 .flags = GENL_UNS_ADMIN_PERM, 13139 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13140 NL80211_FLAG_NEED_RTNL, 13141 }, 13142 { 13143 .cmd = NL80211_CMD_DEL_INTERFACE, 13144 .doit = nl80211_del_interface, 13145 .policy = nl80211_policy, 13146 .flags = GENL_UNS_ADMIN_PERM, 13147 .internal_flags = NL80211_FLAG_NEED_WDEV | 13148 NL80211_FLAG_NEED_RTNL, 13149 }, 13150 { 13151 .cmd = NL80211_CMD_GET_KEY, 13152 .doit = nl80211_get_key, 13153 .policy = nl80211_policy, 13154 .flags = GENL_UNS_ADMIN_PERM, 13155 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13156 NL80211_FLAG_NEED_RTNL, 13157 }, 13158 { 13159 .cmd = NL80211_CMD_SET_KEY, 13160 .doit = nl80211_set_key, 13161 .policy = nl80211_policy, 13162 .flags = GENL_UNS_ADMIN_PERM, 13163 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13164 NL80211_FLAG_NEED_RTNL | 13165 NL80211_FLAG_CLEAR_SKB, 13166 }, 13167 { 13168 .cmd = NL80211_CMD_NEW_KEY, 13169 .doit = nl80211_new_key, 13170 .policy = nl80211_policy, 13171 .flags = GENL_UNS_ADMIN_PERM, 13172 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13173 NL80211_FLAG_NEED_RTNL | 13174 NL80211_FLAG_CLEAR_SKB, 13175 }, 13176 { 13177 .cmd = NL80211_CMD_DEL_KEY, 13178 .doit = nl80211_del_key, 13179 .policy = nl80211_policy, 13180 .flags = GENL_UNS_ADMIN_PERM, 13181 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13182 NL80211_FLAG_NEED_RTNL, 13183 }, 13184 { 13185 .cmd = NL80211_CMD_SET_BEACON, 13186 .policy = nl80211_policy, 13187 .flags = GENL_UNS_ADMIN_PERM, 13188 .doit = nl80211_set_beacon, 13189 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13190 NL80211_FLAG_NEED_RTNL, 13191 }, 13192 { 13193 .cmd = NL80211_CMD_START_AP, 13194 .policy = nl80211_policy, 13195 .flags = GENL_UNS_ADMIN_PERM, 13196 .doit = nl80211_start_ap, 13197 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13198 NL80211_FLAG_NEED_RTNL, 13199 }, 13200 { 13201 .cmd = NL80211_CMD_STOP_AP, 13202 .policy = nl80211_policy, 13203 .flags = GENL_UNS_ADMIN_PERM, 13204 .doit = nl80211_stop_ap, 13205 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13206 NL80211_FLAG_NEED_RTNL, 13207 }, 13208 { 13209 .cmd = NL80211_CMD_GET_STATION, 13210 .doit = nl80211_get_station, 13211 .dumpit = nl80211_dump_station, 13212 .policy = nl80211_policy, 13213 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13214 NL80211_FLAG_NEED_RTNL, 13215 }, 13216 { 13217 .cmd = NL80211_CMD_SET_STATION, 13218 .doit = nl80211_set_station, 13219 .policy = nl80211_policy, 13220 .flags = GENL_UNS_ADMIN_PERM, 13221 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13222 NL80211_FLAG_NEED_RTNL, 13223 }, 13224 { 13225 .cmd = NL80211_CMD_NEW_STATION, 13226 .doit = nl80211_new_station, 13227 .policy = nl80211_policy, 13228 .flags = GENL_UNS_ADMIN_PERM, 13229 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13230 NL80211_FLAG_NEED_RTNL, 13231 }, 13232 { 13233 .cmd = NL80211_CMD_DEL_STATION, 13234 .doit = nl80211_del_station, 13235 .policy = nl80211_policy, 13236 .flags = GENL_UNS_ADMIN_PERM, 13237 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13238 NL80211_FLAG_NEED_RTNL, 13239 }, 13240 { 13241 .cmd = NL80211_CMD_GET_MPATH, 13242 .doit = nl80211_get_mpath, 13243 .dumpit = nl80211_dump_mpath, 13244 .policy = nl80211_policy, 13245 .flags = GENL_UNS_ADMIN_PERM, 13246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13247 NL80211_FLAG_NEED_RTNL, 13248 }, 13249 { 13250 .cmd = NL80211_CMD_GET_MPP, 13251 .doit = nl80211_get_mpp, 13252 .dumpit = nl80211_dump_mpp, 13253 .policy = nl80211_policy, 13254 .flags = GENL_UNS_ADMIN_PERM, 13255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13256 NL80211_FLAG_NEED_RTNL, 13257 }, 13258 { 13259 .cmd = NL80211_CMD_SET_MPATH, 13260 .doit = nl80211_set_mpath, 13261 .policy = nl80211_policy, 13262 .flags = GENL_UNS_ADMIN_PERM, 13263 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13264 NL80211_FLAG_NEED_RTNL, 13265 }, 13266 { 13267 .cmd = NL80211_CMD_NEW_MPATH, 13268 .doit = nl80211_new_mpath, 13269 .policy = nl80211_policy, 13270 .flags = GENL_UNS_ADMIN_PERM, 13271 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13272 NL80211_FLAG_NEED_RTNL, 13273 }, 13274 { 13275 .cmd = NL80211_CMD_DEL_MPATH, 13276 .doit = nl80211_del_mpath, 13277 .policy = nl80211_policy, 13278 .flags = GENL_UNS_ADMIN_PERM, 13279 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13280 NL80211_FLAG_NEED_RTNL, 13281 }, 13282 { 13283 .cmd = NL80211_CMD_SET_BSS, 13284 .doit = nl80211_set_bss, 13285 .policy = nl80211_policy, 13286 .flags = GENL_UNS_ADMIN_PERM, 13287 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13288 NL80211_FLAG_NEED_RTNL, 13289 }, 13290 { 13291 .cmd = NL80211_CMD_GET_REG, 13292 .doit = nl80211_get_reg_do, 13293 .dumpit = nl80211_get_reg_dump, 13294 .policy = nl80211_policy, 13295 .internal_flags = NL80211_FLAG_NEED_RTNL, 13296 /* can be retrieved by unprivileged users */ 13297 }, 13298 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 13299 { 13300 .cmd = NL80211_CMD_SET_REG, 13301 .doit = nl80211_set_reg, 13302 .policy = nl80211_policy, 13303 .flags = GENL_ADMIN_PERM, 13304 .internal_flags = NL80211_FLAG_NEED_RTNL, 13305 }, 13306 #endif 13307 { 13308 .cmd = NL80211_CMD_REQ_SET_REG, 13309 .doit = nl80211_req_set_reg, 13310 .policy = nl80211_policy, 13311 .flags = GENL_ADMIN_PERM, 13312 }, 13313 { 13314 .cmd = NL80211_CMD_RELOAD_REGDB, 13315 .doit = nl80211_reload_regdb, 13316 .policy = nl80211_policy, 13317 .flags = GENL_ADMIN_PERM, 13318 }, 13319 { 13320 .cmd = NL80211_CMD_GET_MESH_CONFIG, 13321 .doit = nl80211_get_mesh_config, 13322 .policy = nl80211_policy, 13323 /* can be retrieved by unprivileged users */ 13324 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13325 NL80211_FLAG_NEED_RTNL, 13326 }, 13327 { 13328 .cmd = NL80211_CMD_SET_MESH_CONFIG, 13329 .doit = nl80211_update_mesh_config, 13330 .policy = nl80211_policy, 13331 .flags = GENL_UNS_ADMIN_PERM, 13332 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13333 NL80211_FLAG_NEED_RTNL, 13334 }, 13335 { 13336 .cmd = NL80211_CMD_TRIGGER_SCAN, 13337 .doit = nl80211_trigger_scan, 13338 .policy = nl80211_policy, 13339 .flags = GENL_UNS_ADMIN_PERM, 13340 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13341 NL80211_FLAG_NEED_RTNL, 13342 }, 13343 { 13344 .cmd = NL80211_CMD_ABORT_SCAN, 13345 .doit = nl80211_abort_scan, 13346 .policy = nl80211_policy, 13347 .flags = GENL_UNS_ADMIN_PERM, 13348 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13349 NL80211_FLAG_NEED_RTNL, 13350 }, 13351 { 13352 .cmd = NL80211_CMD_GET_SCAN, 13353 .policy = nl80211_policy, 13354 .dumpit = nl80211_dump_scan, 13355 }, 13356 { 13357 .cmd = NL80211_CMD_START_SCHED_SCAN, 13358 .doit = nl80211_start_sched_scan, 13359 .policy = nl80211_policy, 13360 .flags = GENL_UNS_ADMIN_PERM, 13361 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13362 NL80211_FLAG_NEED_RTNL, 13363 }, 13364 { 13365 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 13366 .doit = nl80211_stop_sched_scan, 13367 .policy = nl80211_policy, 13368 .flags = GENL_UNS_ADMIN_PERM, 13369 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13370 NL80211_FLAG_NEED_RTNL, 13371 }, 13372 { 13373 .cmd = NL80211_CMD_AUTHENTICATE, 13374 .doit = nl80211_authenticate, 13375 .policy = nl80211_policy, 13376 .flags = GENL_UNS_ADMIN_PERM, 13377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13378 NL80211_FLAG_NEED_RTNL | 13379 NL80211_FLAG_CLEAR_SKB, 13380 }, 13381 { 13382 .cmd = NL80211_CMD_ASSOCIATE, 13383 .doit = nl80211_associate, 13384 .policy = nl80211_policy, 13385 .flags = GENL_UNS_ADMIN_PERM, 13386 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13387 NL80211_FLAG_NEED_RTNL, 13388 }, 13389 { 13390 .cmd = NL80211_CMD_DEAUTHENTICATE, 13391 .doit = nl80211_deauthenticate, 13392 .policy = nl80211_policy, 13393 .flags = GENL_UNS_ADMIN_PERM, 13394 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13395 NL80211_FLAG_NEED_RTNL, 13396 }, 13397 { 13398 .cmd = NL80211_CMD_DISASSOCIATE, 13399 .doit = nl80211_disassociate, 13400 .policy = nl80211_policy, 13401 .flags = GENL_UNS_ADMIN_PERM, 13402 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13403 NL80211_FLAG_NEED_RTNL, 13404 }, 13405 { 13406 .cmd = NL80211_CMD_JOIN_IBSS, 13407 .doit = nl80211_join_ibss, 13408 .policy = nl80211_policy, 13409 .flags = GENL_UNS_ADMIN_PERM, 13410 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13411 NL80211_FLAG_NEED_RTNL, 13412 }, 13413 { 13414 .cmd = NL80211_CMD_LEAVE_IBSS, 13415 .doit = nl80211_leave_ibss, 13416 .policy = nl80211_policy, 13417 .flags = GENL_UNS_ADMIN_PERM, 13418 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13419 NL80211_FLAG_NEED_RTNL, 13420 }, 13421 #ifdef CONFIG_NL80211_TESTMODE 13422 { 13423 .cmd = NL80211_CMD_TESTMODE, 13424 .doit = nl80211_testmode_do, 13425 .dumpit = nl80211_testmode_dump, 13426 .policy = nl80211_policy, 13427 .flags = GENL_UNS_ADMIN_PERM, 13428 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13429 NL80211_FLAG_NEED_RTNL, 13430 }, 13431 #endif 13432 { 13433 .cmd = NL80211_CMD_CONNECT, 13434 .doit = nl80211_connect, 13435 .policy = nl80211_policy, 13436 .flags = GENL_UNS_ADMIN_PERM, 13437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13438 NL80211_FLAG_NEED_RTNL, 13439 }, 13440 { 13441 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 13442 .doit = nl80211_update_connect_params, 13443 .policy = nl80211_policy, 13444 .flags = GENL_ADMIN_PERM, 13445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13446 NL80211_FLAG_NEED_RTNL, 13447 }, 13448 { 13449 .cmd = NL80211_CMD_DISCONNECT, 13450 .doit = nl80211_disconnect, 13451 .policy = nl80211_policy, 13452 .flags = GENL_UNS_ADMIN_PERM, 13453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13454 NL80211_FLAG_NEED_RTNL, 13455 }, 13456 { 13457 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 13458 .doit = nl80211_wiphy_netns, 13459 .policy = nl80211_policy, 13460 .flags = GENL_UNS_ADMIN_PERM, 13461 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13462 NL80211_FLAG_NEED_RTNL, 13463 }, 13464 { 13465 .cmd = NL80211_CMD_GET_SURVEY, 13466 .policy = nl80211_policy, 13467 .dumpit = nl80211_dump_survey, 13468 }, 13469 { 13470 .cmd = NL80211_CMD_SET_PMKSA, 13471 .doit = nl80211_setdel_pmksa, 13472 .policy = nl80211_policy, 13473 .flags = GENL_UNS_ADMIN_PERM, 13474 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13475 NL80211_FLAG_NEED_RTNL, 13476 }, 13477 { 13478 .cmd = NL80211_CMD_DEL_PMKSA, 13479 .doit = nl80211_setdel_pmksa, 13480 .policy = nl80211_policy, 13481 .flags = GENL_UNS_ADMIN_PERM, 13482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13483 NL80211_FLAG_NEED_RTNL, 13484 }, 13485 { 13486 .cmd = NL80211_CMD_FLUSH_PMKSA, 13487 .doit = nl80211_flush_pmksa, 13488 .policy = nl80211_policy, 13489 .flags = GENL_UNS_ADMIN_PERM, 13490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13491 NL80211_FLAG_NEED_RTNL, 13492 }, 13493 { 13494 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 13495 .doit = nl80211_remain_on_channel, 13496 .policy = nl80211_policy, 13497 .flags = GENL_UNS_ADMIN_PERM, 13498 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13499 NL80211_FLAG_NEED_RTNL, 13500 }, 13501 { 13502 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 13503 .doit = nl80211_cancel_remain_on_channel, 13504 .policy = nl80211_policy, 13505 .flags = GENL_UNS_ADMIN_PERM, 13506 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13507 NL80211_FLAG_NEED_RTNL, 13508 }, 13509 { 13510 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 13511 .doit = nl80211_set_tx_bitrate_mask, 13512 .policy = nl80211_policy, 13513 .flags = GENL_UNS_ADMIN_PERM, 13514 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13515 NL80211_FLAG_NEED_RTNL, 13516 }, 13517 { 13518 .cmd = NL80211_CMD_REGISTER_FRAME, 13519 .doit = nl80211_register_mgmt, 13520 .policy = nl80211_policy, 13521 .flags = GENL_UNS_ADMIN_PERM, 13522 .internal_flags = NL80211_FLAG_NEED_WDEV | 13523 NL80211_FLAG_NEED_RTNL, 13524 }, 13525 { 13526 .cmd = NL80211_CMD_FRAME, 13527 .doit = nl80211_tx_mgmt, 13528 .policy = nl80211_policy, 13529 .flags = GENL_UNS_ADMIN_PERM, 13530 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13531 NL80211_FLAG_NEED_RTNL, 13532 }, 13533 { 13534 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 13535 .doit = nl80211_tx_mgmt_cancel_wait, 13536 .policy = nl80211_policy, 13537 .flags = GENL_UNS_ADMIN_PERM, 13538 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13539 NL80211_FLAG_NEED_RTNL, 13540 }, 13541 { 13542 .cmd = NL80211_CMD_SET_POWER_SAVE, 13543 .doit = nl80211_set_power_save, 13544 .policy = nl80211_policy, 13545 .flags = GENL_UNS_ADMIN_PERM, 13546 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13547 NL80211_FLAG_NEED_RTNL, 13548 }, 13549 { 13550 .cmd = NL80211_CMD_GET_POWER_SAVE, 13551 .doit = nl80211_get_power_save, 13552 .policy = nl80211_policy, 13553 /* can be retrieved by unprivileged users */ 13554 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13555 NL80211_FLAG_NEED_RTNL, 13556 }, 13557 { 13558 .cmd = NL80211_CMD_SET_CQM, 13559 .doit = nl80211_set_cqm, 13560 .policy = nl80211_policy, 13561 .flags = GENL_UNS_ADMIN_PERM, 13562 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13563 NL80211_FLAG_NEED_RTNL, 13564 }, 13565 { 13566 .cmd = NL80211_CMD_SET_CHANNEL, 13567 .doit = nl80211_set_channel, 13568 .policy = nl80211_policy, 13569 .flags = GENL_UNS_ADMIN_PERM, 13570 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13571 NL80211_FLAG_NEED_RTNL, 13572 }, 13573 { 13574 .cmd = NL80211_CMD_SET_WDS_PEER, 13575 .doit = nl80211_set_wds_peer, 13576 .policy = nl80211_policy, 13577 .flags = GENL_UNS_ADMIN_PERM, 13578 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13579 NL80211_FLAG_NEED_RTNL, 13580 }, 13581 { 13582 .cmd = NL80211_CMD_JOIN_MESH, 13583 .doit = nl80211_join_mesh, 13584 .policy = nl80211_policy, 13585 .flags = GENL_UNS_ADMIN_PERM, 13586 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13587 NL80211_FLAG_NEED_RTNL, 13588 }, 13589 { 13590 .cmd = NL80211_CMD_LEAVE_MESH, 13591 .doit = nl80211_leave_mesh, 13592 .policy = nl80211_policy, 13593 .flags = GENL_UNS_ADMIN_PERM, 13594 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13595 NL80211_FLAG_NEED_RTNL, 13596 }, 13597 { 13598 .cmd = NL80211_CMD_JOIN_OCB, 13599 .doit = nl80211_join_ocb, 13600 .policy = nl80211_policy, 13601 .flags = GENL_UNS_ADMIN_PERM, 13602 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13603 NL80211_FLAG_NEED_RTNL, 13604 }, 13605 { 13606 .cmd = NL80211_CMD_LEAVE_OCB, 13607 .doit = nl80211_leave_ocb, 13608 .policy = nl80211_policy, 13609 .flags = GENL_UNS_ADMIN_PERM, 13610 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13611 NL80211_FLAG_NEED_RTNL, 13612 }, 13613 #ifdef CONFIG_PM 13614 { 13615 .cmd = NL80211_CMD_GET_WOWLAN, 13616 .doit = nl80211_get_wowlan, 13617 .policy = nl80211_policy, 13618 /* can be retrieved by unprivileged users */ 13619 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13620 NL80211_FLAG_NEED_RTNL, 13621 }, 13622 { 13623 .cmd = NL80211_CMD_SET_WOWLAN, 13624 .doit = nl80211_set_wowlan, 13625 .policy = nl80211_policy, 13626 .flags = GENL_UNS_ADMIN_PERM, 13627 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13628 NL80211_FLAG_NEED_RTNL, 13629 }, 13630 #endif 13631 { 13632 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 13633 .doit = nl80211_set_rekey_data, 13634 .policy = nl80211_policy, 13635 .flags = GENL_UNS_ADMIN_PERM, 13636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13637 NL80211_FLAG_NEED_RTNL | 13638 NL80211_FLAG_CLEAR_SKB, 13639 }, 13640 { 13641 .cmd = NL80211_CMD_TDLS_MGMT, 13642 .doit = nl80211_tdls_mgmt, 13643 .policy = nl80211_policy, 13644 .flags = GENL_UNS_ADMIN_PERM, 13645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13646 NL80211_FLAG_NEED_RTNL, 13647 }, 13648 { 13649 .cmd = NL80211_CMD_TDLS_OPER, 13650 .doit = nl80211_tdls_oper, 13651 .policy = nl80211_policy, 13652 .flags = GENL_UNS_ADMIN_PERM, 13653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13654 NL80211_FLAG_NEED_RTNL, 13655 }, 13656 { 13657 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 13658 .doit = nl80211_register_unexpected_frame, 13659 .policy = nl80211_policy, 13660 .flags = GENL_UNS_ADMIN_PERM, 13661 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13662 NL80211_FLAG_NEED_RTNL, 13663 }, 13664 { 13665 .cmd = NL80211_CMD_PROBE_CLIENT, 13666 .doit = nl80211_probe_client, 13667 .policy = nl80211_policy, 13668 .flags = GENL_UNS_ADMIN_PERM, 13669 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13670 NL80211_FLAG_NEED_RTNL, 13671 }, 13672 { 13673 .cmd = NL80211_CMD_REGISTER_BEACONS, 13674 .doit = nl80211_register_beacons, 13675 .policy = nl80211_policy, 13676 .flags = GENL_UNS_ADMIN_PERM, 13677 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13678 NL80211_FLAG_NEED_RTNL, 13679 }, 13680 { 13681 .cmd = NL80211_CMD_SET_NOACK_MAP, 13682 .doit = nl80211_set_noack_map, 13683 .policy = nl80211_policy, 13684 .flags = GENL_UNS_ADMIN_PERM, 13685 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13686 NL80211_FLAG_NEED_RTNL, 13687 }, 13688 { 13689 .cmd = NL80211_CMD_START_P2P_DEVICE, 13690 .doit = nl80211_start_p2p_device, 13691 .policy = nl80211_policy, 13692 .flags = GENL_UNS_ADMIN_PERM, 13693 .internal_flags = NL80211_FLAG_NEED_WDEV | 13694 NL80211_FLAG_NEED_RTNL, 13695 }, 13696 { 13697 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 13698 .doit = nl80211_stop_p2p_device, 13699 .policy = nl80211_policy, 13700 .flags = GENL_UNS_ADMIN_PERM, 13701 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13702 NL80211_FLAG_NEED_RTNL, 13703 }, 13704 { 13705 .cmd = NL80211_CMD_START_NAN, 13706 .doit = nl80211_start_nan, 13707 .policy = nl80211_policy, 13708 .flags = GENL_ADMIN_PERM, 13709 .internal_flags = NL80211_FLAG_NEED_WDEV | 13710 NL80211_FLAG_NEED_RTNL, 13711 }, 13712 { 13713 .cmd = NL80211_CMD_STOP_NAN, 13714 .doit = nl80211_stop_nan, 13715 .policy = nl80211_policy, 13716 .flags = GENL_ADMIN_PERM, 13717 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13718 NL80211_FLAG_NEED_RTNL, 13719 }, 13720 { 13721 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 13722 .doit = nl80211_nan_add_func, 13723 .policy = nl80211_policy, 13724 .flags = GENL_ADMIN_PERM, 13725 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13726 NL80211_FLAG_NEED_RTNL, 13727 }, 13728 { 13729 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 13730 .doit = nl80211_nan_del_func, 13731 .policy = nl80211_policy, 13732 .flags = GENL_ADMIN_PERM, 13733 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13734 NL80211_FLAG_NEED_RTNL, 13735 }, 13736 { 13737 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 13738 .doit = nl80211_nan_change_config, 13739 .policy = nl80211_policy, 13740 .flags = GENL_ADMIN_PERM, 13741 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13742 NL80211_FLAG_NEED_RTNL, 13743 }, 13744 { 13745 .cmd = NL80211_CMD_SET_MCAST_RATE, 13746 .doit = nl80211_set_mcast_rate, 13747 .policy = nl80211_policy, 13748 .flags = GENL_UNS_ADMIN_PERM, 13749 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13750 NL80211_FLAG_NEED_RTNL, 13751 }, 13752 { 13753 .cmd = NL80211_CMD_SET_MAC_ACL, 13754 .doit = nl80211_set_mac_acl, 13755 .policy = nl80211_policy, 13756 .flags = GENL_UNS_ADMIN_PERM, 13757 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13758 NL80211_FLAG_NEED_RTNL, 13759 }, 13760 { 13761 .cmd = NL80211_CMD_RADAR_DETECT, 13762 .doit = nl80211_start_radar_detection, 13763 .policy = nl80211_policy, 13764 .flags = GENL_UNS_ADMIN_PERM, 13765 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13766 NL80211_FLAG_NEED_RTNL, 13767 }, 13768 { 13769 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 13770 .doit = nl80211_get_protocol_features, 13771 .policy = nl80211_policy, 13772 }, 13773 { 13774 .cmd = NL80211_CMD_UPDATE_FT_IES, 13775 .doit = nl80211_update_ft_ies, 13776 .policy = nl80211_policy, 13777 .flags = GENL_UNS_ADMIN_PERM, 13778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13779 NL80211_FLAG_NEED_RTNL, 13780 }, 13781 { 13782 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 13783 .doit = nl80211_crit_protocol_start, 13784 .policy = nl80211_policy, 13785 .flags = GENL_UNS_ADMIN_PERM, 13786 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13787 NL80211_FLAG_NEED_RTNL, 13788 }, 13789 { 13790 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 13791 .doit = nl80211_crit_protocol_stop, 13792 .policy = nl80211_policy, 13793 .flags = GENL_UNS_ADMIN_PERM, 13794 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13795 NL80211_FLAG_NEED_RTNL, 13796 }, 13797 { 13798 .cmd = NL80211_CMD_GET_COALESCE, 13799 .doit = nl80211_get_coalesce, 13800 .policy = nl80211_policy, 13801 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13802 NL80211_FLAG_NEED_RTNL, 13803 }, 13804 { 13805 .cmd = NL80211_CMD_SET_COALESCE, 13806 .doit = nl80211_set_coalesce, 13807 .policy = nl80211_policy, 13808 .flags = GENL_UNS_ADMIN_PERM, 13809 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13810 NL80211_FLAG_NEED_RTNL, 13811 }, 13812 { 13813 .cmd = NL80211_CMD_CHANNEL_SWITCH, 13814 .doit = nl80211_channel_switch, 13815 .policy = nl80211_policy, 13816 .flags = GENL_UNS_ADMIN_PERM, 13817 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13818 NL80211_FLAG_NEED_RTNL, 13819 }, 13820 { 13821 .cmd = NL80211_CMD_VENDOR, 13822 .doit = nl80211_vendor_cmd, 13823 .dumpit = nl80211_vendor_cmd_dump, 13824 .policy = nl80211_policy, 13825 .flags = GENL_UNS_ADMIN_PERM, 13826 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13827 NL80211_FLAG_NEED_RTNL, 13828 }, 13829 { 13830 .cmd = NL80211_CMD_SET_QOS_MAP, 13831 .doit = nl80211_set_qos_map, 13832 .policy = nl80211_policy, 13833 .flags = GENL_UNS_ADMIN_PERM, 13834 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13835 NL80211_FLAG_NEED_RTNL, 13836 }, 13837 { 13838 .cmd = NL80211_CMD_ADD_TX_TS, 13839 .doit = nl80211_add_tx_ts, 13840 .policy = nl80211_policy, 13841 .flags = GENL_UNS_ADMIN_PERM, 13842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13843 NL80211_FLAG_NEED_RTNL, 13844 }, 13845 { 13846 .cmd = NL80211_CMD_DEL_TX_TS, 13847 .doit = nl80211_del_tx_ts, 13848 .policy = nl80211_policy, 13849 .flags = GENL_UNS_ADMIN_PERM, 13850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13851 NL80211_FLAG_NEED_RTNL, 13852 }, 13853 { 13854 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 13855 .doit = nl80211_tdls_channel_switch, 13856 .policy = nl80211_policy, 13857 .flags = GENL_UNS_ADMIN_PERM, 13858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13859 NL80211_FLAG_NEED_RTNL, 13860 }, 13861 { 13862 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 13863 .doit = nl80211_tdls_cancel_channel_switch, 13864 .policy = nl80211_policy, 13865 .flags = GENL_UNS_ADMIN_PERM, 13866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13867 NL80211_FLAG_NEED_RTNL, 13868 }, 13869 { 13870 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 13871 .doit = nl80211_set_multicast_to_unicast, 13872 .policy = nl80211_policy, 13873 .flags = GENL_UNS_ADMIN_PERM, 13874 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13875 NL80211_FLAG_NEED_RTNL, 13876 }, 13877 { 13878 .cmd = NL80211_CMD_SET_PMK, 13879 .doit = nl80211_set_pmk, 13880 .policy = nl80211_policy, 13881 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13882 NL80211_FLAG_NEED_RTNL, 13883 }, 13884 { 13885 .cmd = NL80211_CMD_DEL_PMK, 13886 .doit = nl80211_del_pmk, 13887 .policy = nl80211_policy, 13888 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13889 NL80211_FLAG_NEED_RTNL, 13890 }, 13891 { 13892 .cmd = NL80211_CMD_EXTERNAL_AUTH, 13893 .doit = nl80211_external_auth, 13894 .policy = nl80211_policy, 13895 .flags = GENL_ADMIN_PERM, 13896 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13897 NL80211_FLAG_NEED_RTNL, 13898 }, 13899 { 13900 .cmd = NL80211_CMD_CONTROL_PORT_FRAME, 13901 .doit = nl80211_tx_control_port, 13902 .policy = nl80211_policy, 13903 .flags = GENL_UNS_ADMIN_PERM, 13904 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13905 NL80211_FLAG_NEED_RTNL, 13906 }, 13907 }; 13908 13909 static struct genl_family nl80211_fam __ro_after_init = { 13910 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 13911 .hdrsize = 0, /* no private header */ 13912 .version = 1, /* no particular meaning now */ 13913 .maxattr = NL80211_ATTR_MAX, 13914 .netnsok = true, 13915 .pre_doit = nl80211_pre_doit, 13916 .post_doit = nl80211_post_doit, 13917 .module = THIS_MODULE, 13918 .ops = nl80211_ops, 13919 .n_ops = ARRAY_SIZE(nl80211_ops), 13920 .mcgrps = nl80211_mcgrps, 13921 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 13922 }; 13923 13924 /* notification functions */ 13925 13926 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 13927 enum nl80211_commands cmd) 13928 { 13929 struct sk_buff *msg; 13930 struct nl80211_dump_wiphy_state state = {}; 13931 13932 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 13933 cmd != NL80211_CMD_DEL_WIPHY); 13934 13935 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13936 if (!msg) 13937 return; 13938 13939 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 13940 nlmsg_free(msg); 13941 return; 13942 } 13943 13944 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13945 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13946 } 13947 13948 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 13949 struct wireless_dev *wdev, 13950 enum nl80211_commands cmd) 13951 { 13952 struct sk_buff *msg; 13953 13954 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 13955 cmd != NL80211_CMD_DEL_INTERFACE); 13956 13957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13958 if (!msg) 13959 return; 13960 13961 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, 13962 cmd == NL80211_CMD_DEL_INTERFACE) < 0) { 13963 nlmsg_free(msg); 13964 return; 13965 } 13966 13967 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13968 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13969 } 13970 13971 static int nl80211_add_scan_req(struct sk_buff *msg, 13972 struct cfg80211_registered_device *rdev) 13973 { 13974 struct cfg80211_scan_request *req = rdev->scan_req; 13975 struct nlattr *nest; 13976 int i; 13977 13978 if (WARN_ON(!req)) 13979 return 0; 13980 13981 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 13982 if (!nest) 13983 goto nla_put_failure; 13984 for (i = 0; i < req->n_ssids; i++) { 13985 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 13986 goto nla_put_failure; 13987 } 13988 nla_nest_end(msg, nest); 13989 13990 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 13991 if (!nest) 13992 goto nla_put_failure; 13993 for (i = 0; i < req->n_channels; i++) { 13994 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 13995 goto nla_put_failure; 13996 } 13997 nla_nest_end(msg, nest); 13998 13999 if (req->ie && 14000 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 14001 goto nla_put_failure; 14002 14003 if (req->flags && 14004 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 14005 goto nla_put_failure; 14006 14007 if (req->info.scan_start_tsf && 14008 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 14009 req->info.scan_start_tsf, NL80211_BSS_PAD) || 14010 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 14011 req->info.tsf_bssid))) 14012 goto nla_put_failure; 14013 14014 return 0; 14015 nla_put_failure: 14016 return -ENOBUFS; 14017 } 14018 14019 static int nl80211_prep_scan_msg(struct sk_buff *msg, 14020 struct cfg80211_registered_device *rdev, 14021 struct wireless_dev *wdev, 14022 u32 portid, u32 seq, int flags, 14023 u32 cmd) 14024 { 14025 void *hdr; 14026 14027 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 14028 if (!hdr) 14029 return -1; 14030 14031 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14032 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14033 wdev->netdev->ifindex)) || 14034 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14035 NL80211_ATTR_PAD)) 14036 goto nla_put_failure; 14037 14038 /* ignore errors and send incomplete event anyway */ 14039 nl80211_add_scan_req(msg, rdev); 14040 14041 genlmsg_end(msg, hdr); 14042 return 0; 14043 14044 nla_put_failure: 14045 genlmsg_cancel(msg, hdr); 14046 return -EMSGSIZE; 14047 } 14048 14049 static int 14050 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 14051 struct cfg80211_sched_scan_request *req, u32 cmd) 14052 { 14053 void *hdr; 14054 14055 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14056 if (!hdr) 14057 return -1; 14058 14059 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 14060 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 14061 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 14062 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 14063 NL80211_ATTR_PAD)) 14064 goto nla_put_failure; 14065 14066 genlmsg_end(msg, hdr); 14067 return 0; 14068 14069 nla_put_failure: 14070 genlmsg_cancel(msg, hdr); 14071 return -EMSGSIZE; 14072 } 14073 14074 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 14075 struct wireless_dev *wdev) 14076 { 14077 struct sk_buff *msg; 14078 14079 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14080 if (!msg) 14081 return; 14082 14083 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 14084 NL80211_CMD_TRIGGER_SCAN) < 0) { 14085 nlmsg_free(msg); 14086 return; 14087 } 14088 14089 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14090 NL80211_MCGRP_SCAN, GFP_KERNEL); 14091 } 14092 14093 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 14094 struct wireless_dev *wdev, bool aborted) 14095 { 14096 struct sk_buff *msg; 14097 14098 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14099 if (!msg) 14100 return NULL; 14101 14102 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 14103 aborted ? NL80211_CMD_SCAN_ABORTED : 14104 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 14105 nlmsg_free(msg); 14106 return NULL; 14107 } 14108 14109 return msg; 14110 } 14111 14112 /* send message created by nl80211_build_scan_msg() */ 14113 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 14114 struct sk_buff *msg) 14115 { 14116 if (!msg) 14117 return; 14118 14119 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14120 NL80211_MCGRP_SCAN, GFP_KERNEL); 14121 } 14122 14123 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 14124 { 14125 struct sk_buff *msg; 14126 14127 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14128 if (!msg) 14129 return; 14130 14131 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 14132 nlmsg_free(msg); 14133 return; 14134 } 14135 14136 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 14137 NL80211_MCGRP_SCAN, GFP_KERNEL); 14138 } 14139 14140 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 14141 struct regulatory_request *request) 14142 { 14143 /* Userspace can always count this one always being set */ 14144 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 14145 goto nla_put_failure; 14146 14147 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 14148 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14149 NL80211_REGDOM_TYPE_WORLD)) 14150 goto nla_put_failure; 14151 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 14152 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14153 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 14154 goto nla_put_failure; 14155 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 14156 request->intersect) { 14157 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14158 NL80211_REGDOM_TYPE_INTERSECTION)) 14159 goto nla_put_failure; 14160 } else { 14161 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 14162 NL80211_REGDOM_TYPE_COUNTRY) || 14163 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 14164 request->alpha2)) 14165 goto nla_put_failure; 14166 } 14167 14168 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 14169 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 14170 14171 if (wiphy && 14172 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 14173 goto nla_put_failure; 14174 14175 if (wiphy && 14176 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 14177 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 14178 goto nla_put_failure; 14179 } 14180 14181 return true; 14182 14183 nla_put_failure: 14184 return false; 14185 } 14186 14187 /* 14188 * This can happen on global regulatory changes or device specific settings 14189 * based on custom regulatory domains. 14190 */ 14191 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 14192 struct regulatory_request *request) 14193 { 14194 struct sk_buff *msg; 14195 void *hdr; 14196 14197 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14198 if (!msg) 14199 return; 14200 14201 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 14202 if (!hdr) { 14203 nlmsg_free(msg); 14204 return; 14205 } 14206 14207 if (nl80211_reg_change_event_fill(msg, request) == false) 14208 goto nla_put_failure; 14209 14210 genlmsg_end(msg, hdr); 14211 14212 rcu_read_lock(); 14213 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14214 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14215 rcu_read_unlock(); 14216 14217 return; 14218 14219 nla_put_failure: 14220 nlmsg_free(msg); 14221 } 14222 14223 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 14224 struct net_device *netdev, 14225 const u8 *buf, size_t len, 14226 enum nl80211_commands cmd, gfp_t gfp, 14227 int uapsd_queues) 14228 { 14229 struct sk_buff *msg; 14230 void *hdr; 14231 14232 msg = nlmsg_new(100 + len, gfp); 14233 if (!msg) 14234 return; 14235 14236 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14237 if (!hdr) { 14238 nlmsg_free(msg); 14239 return; 14240 } 14241 14242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14243 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14244 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 14245 goto nla_put_failure; 14246 14247 if (uapsd_queues >= 0) { 14248 struct nlattr *nla_wmm = 14249 nla_nest_start(msg, NL80211_ATTR_STA_WME); 14250 if (!nla_wmm) 14251 goto nla_put_failure; 14252 14253 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 14254 uapsd_queues)) 14255 goto nla_put_failure; 14256 14257 nla_nest_end(msg, nla_wmm); 14258 } 14259 14260 genlmsg_end(msg, hdr); 14261 14262 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14263 NL80211_MCGRP_MLME, gfp); 14264 return; 14265 14266 nla_put_failure: 14267 nlmsg_free(msg); 14268 } 14269 14270 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 14271 struct net_device *netdev, const u8 *buf, 14272 size_t len, gfp_t gfp) 14273 { 14274 nl80211_send_mlme_event(rdev, netdev, buf, len, 14275 NL80211_CMD_AUTHENTICATE, gfp, -1); 14276 } 14277 14278 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 14279 struct net_device *netdev, const u8 *buf, 14280 size_t len, gfp_t gfp, int uapsd_queues) 14281 { 14282 nl80211_send_mlme_event(rdev, netdev, buf, len, 14283 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 14284 } 14285 14286 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 14287 struct net_device *netdev, const u8 *buf, 14288 size_t len, gfp_t gfp) 14289 { 14290 nl80211_send_mlme_event(rdev, netdev, buf, len, 14291 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 14292 } 14293 14294 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 14295 struct net_device *netdev, const u8 *buf, 14296 size_t len, gfp_t gfp) 14297 { 14298 nl80211_send_mlme_event(rdev, netdev, buf, len, 14299 NL80211_CMD_DISASSOCIATE, gfp, -1); 14300 } 14301 14302 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 14303 size_t len) 14304 { 14305 struct wireless_dev *wdev = dev->ieee80211_ptr; 14306 struct wiphy *wiphy = wdev->wiphy; 14307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14308 const struct ieee80211_mgmt *mgmt = (void *)buf; 14309 u32 cmd; 14310 14311 if (WARN_ON(len < 2)) 14312 return; 14313 14314 if (ieee80211_is_deauth(mgmt->frame_control)) 14315 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 14316 else 14317 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 14318 14319 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 14320 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 14321 } 14322 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 14323 14324 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 14325 struct net_device *netdev, int cmd, 14326 const u8 *addr, gfp_t gfp) 14327 { 14328 struct sk_buff *msg; 14329 void *hdr; 14330 14331 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14332 if (!msg) 14333 return; 14334 14335 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14336 if (!hdr) { 14337 nlmsg_free(msg); 14338 return; 14339 } 14340 14341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14342 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14343 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 14344 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14345 goto nla_put_failure; 14346 14347 genlmsg_end(msg, hdr); 14348 14349 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14350 NL80211_MCGRP_MLME, gfp); 14351 return; 14352 14353 nla_put_failure: 14354 nlmsg_free(msg); 14355 } 14356 14357 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 14358 struct net_device *netdev, const u8 *addr, 14359 gfp_t gfp) 14360 { 14361 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 14362 addr, gfp); 14363 } 14364 14365 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 14366 struct net_device *netdev, const u8 *addr, 14367 gfp_t gfp) 14368 { 14369 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 14370 addr, gfp); 14371 } 14372 14373 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 14374 struct net_device *netdev, 14375 struct cfg80211_connect_resp_params *cr, 14376 gfp_t gfp) 14377 { 14378 struct sk_buff *msg; 14379 void *hdr; 14380 14381 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 14382 cr->fils.kek_len + cr->fils.pmk_len + 14383 (cr->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 14384 if (!msg) 14385 return; 14386 14387 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 14388 if (!hdr) { 14389 nlmsg_free(msg); 14390 return; 14391 } 14392 14393 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14394 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14395 (cr->bssid && 14396 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) || 14397 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 14398 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 14399 cr->status) || 14400 (cr->status < 0 && 14401 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 14402 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 14403 cr->timeout_reason))) || 14404 (cr->req_ie && 14405 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 14406 (cr->resp_ie && 14407 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 14408 cr->resp_ie)) || 14409 (cr->fils.update_erp_next_seq_num && 14410 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 14411 cr->fils.erp_next_seq_num)) || 14412 (cr->status == WLAN_STATUS_SUCCESS && 14413 ((cr->fils.kek && 14414 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils.kek_len, 14415 cr->fils.kek)) || 14416 (cr->fils.pmk && 14417 nla_put(msg, NL80211_ATTR_PMK, cr->fils.pmk_len, cr->fils.pmk)) || 14418 (cr->fils.pmkid && 14419 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->fils.pmkid))))) 14420 goto nla_put_failure; 14421 14422 genlmsg_end(msg, hdr); 14423 14424 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14425 NL80211_MCGRP_MLME, gfp); 14426 return; 14427 14428 nla_put_failure: 14429 nlmsg_free(msg); 14430 } 14431 14432 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 14433 struct net_device *netdev, 14434 struct cfg80211_roam_info *info, gfp_t gfp) 14435 { 14436 struct sk_buff *msg; 14437 void *hdr; 14438 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid; 14439 14440 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len + 14441 info->fils.kek_len + info->fils.pmk_len + 14442 (info->fils.pmkid ? WLAN_PMKID_LEN : 0), gfp); 14443 if (!msg) 14444 return; 14445 14446 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 14447 if (!hdr) { 14448 nlmsg_free(msg); 14449 return; 14450 } 14451 14452 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14453 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14454 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 14455 (info->req_ie && 14456 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 14457 info->req_ie)) || 14458 (info->resp_ie && 14459 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 14460 info->resp_ie)) || 14461 (info->fils.update_erp_next_seq_num && 14462 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 14463 info->fils.erp_next_seq_num)) || 14464 (info->fils.kek && 14465 nla_put(msg, NL80211_ATTR_FILS_KEK, info->fils.kek_len, 14466 info->fils.kek)) || 14467 (info->fils.pmk && 14468 nla_put(msg, NL80211_ATTR_PMK, info->fils.pmk_len, info->fils.pmk)) || 14469 (info->fils.pmkid && 14470 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, info->fils.pmkid))) 14471 goto nla_put_failure; 14472 14473 genlmsg_end(msg, hdr); 14474 14475 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14476 NL80211_MCGRP_MLME, gfp); 14477 return; 14478 14479 nla_put_failure: 14480 nlmsg_free(msg); 14481 } 14482 14483 void nl80211_send_port_authorized(struct cfg80211_registered_device *rdev, 14484 struct net_device *netdev, const u8 *bssid) 14485 { 14486 struct sk_buff *msg; 14487 void *hdr; 14488 14489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 14490 if (!msg) 14491 return; 14492 14493 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PORT_AUTHORIZED); 14494 if (!hdr) { 14495 nlmsg_free(msg); 14496 return; 14497 } 14498 14499 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14500 goto nla_put_failure; 14501 14502 genlmsg_end(msg, hdr); 14503 14504 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14505 NL80211_MCGRP_MLME, GFP_KERNEL); 14506 return; 14507 14508 nla_put_failure: 14509 nlmsg_free(msg); 14510 } 14511 14512 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 14513 struct net_device *netdev, u16 reason, 14514 const u8 *ie, size_t ie_len, bool from_ap) 14515 { 14516 struct sk_buff *msg; 14517 void *hdr; 14518 14519 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 14520 if (!msg) 14521 return; 14522 14523 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 14524 if (!hdr) { 14525 nlmsg_free(msg); 14526 return; 14527 } 14528 14529 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14530 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14531 (reason && 14532 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 14533 (from_ap && 14534 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 14535 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 14536 goto nla_put_failure; 14537 14538 genlmsg_end(msg, hdr); 14539 14540 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14541 NL80211_MCGRP_MLME, GFP_KERNEL); 14542 return; 14543 14544 nla_put_failure: 14545 nlmsg_free(msg); 14546 } 14547 14548 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 14549 struct net_device *netdev, const u8 *bssid, 14550 gfp_t gfp) 14551 { 14552 struct sk_buff *msg; 14553 void *hdr; 14554 14555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14556 if (!msg) 14557 return; 14558 14559 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 14560 if (!hdr) { 14561 nlmsg_free(msg); 14562 return; 14563 } 14564 14565 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14566 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14567 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14568 goto nla_put_failure; 14569 14570 genlmsg_end(msg, hdr); 14571 14572 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14573 NL80211_MCGRP_MLME, gfp); 14574 return; 14575 14576 nla_put_failure: 14577 nlmsg_free(msg); 14578 } 14579 14580 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 14581 const u8* ie, u8 ie_len, gfp_t gfp) 14582 { 14583 struct wireless_dev *wdev = dev->ieee80211_ptr; 14584 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14585 struct sk_buff *msg; 14586 void *hdr; 14587 14588 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 14589 return; 14590 14591 trace_cfg80211_notify_new_peer_candidate(dev, addr); 14592 14593 msg = nlmsg_new(100 + ie_len, gfp); 14594 if (!msg) 14595 return; 14596 14597 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 14598 if (!hdr) { 14599 nlmsg_free(msg); 14600 return; 14601 } 14602 14603 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14604 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14605 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 14606 (ie_len && ie && 14607 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 14608 goto nla_put_failure; 14609 14610 genlmsg_end(msg, hdr); 14611 14612 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14613 NL80211_MCGRP_MLME, gfp); 14614 return; 14615 14616 nla_put_failure: 14617 nlmsg_free(msg); 14618 } 14619 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 14620 14621 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 14622 struct net_device *netdev, const u8 *addr, 14623 enum nl80211_key_type key_type, int key_id, 14624 const u8 *tsc, gfp_t gfp) 14625 { 14626 struct sk_buff *msg; 14627 void *hdr; 14628 14629 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14630 if (!msg) 14631 return; 14632 14633 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 14634 if (!hdr) { 14635 nlmsg_free(msg); 14636 return; 14637 } 14638 14639 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14640 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14641 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 14642 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 14643 (key_id != -1 && 14644 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 14645 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 14646 goto nla_put_failure; 14647 14648 genlmsg_end(msg, hdr); 14649 14650 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14651 NL80211_MCGRP_MLME, gfp); 14652 return; 14653 14654 nla_put_failure: 14655 nlmsg_free(msg); 14656 } 14657 14658 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 14659 struct ieee80211_channel *channel_before, 14660 struct ieee80211_channel *channel_after) 14661 { 14662 struct sk_buff *msg; 14663 void *hdr; 14664 struct nlattr *nl_freq; 14665 14666 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 14667 if (!msg) 14668 return; 14669 14670 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 14671 if (!hdr) { 14672 nlmsg_free(msg); 14673 return; 14674 } 14675 14676 /* 14677 * Since we are applying the beacon hint to a wiphy we know its 14678 * wiphy_idx is valid 14679 */ 14680 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 14681 goto nla_put_failure; 14682 14683 /* Before */ 14684 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 14685 if (!nl_freq) 14686 goto nla_put_failure; 14687 14688 if (nl80211_msg_put_channel(msg, wiphy, channel_before, false)) 14689 goto nla_put_failure; 14690 nla_nest_end(msg, nl_freq); 14691 14692 /* After */ 14693 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 14694 if (!nl_freq) 14695 goto nla_put_failure; 14696 14697 if (nl80211_msg_put_channel(msg, wiphy, channel_after, false)) 14698 goto nla_put_failure; 14699 nla_nest_end(msg, nl_freq); 14700 14701 genlmsg_end(msg, hdr); 14702 14703 rcu_read_lock(); 14704 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14705 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14706 rcu_read_unlock(); 14707 14708 return; 14709 14710 nla_put_failure: 14711 nlmsg_free(msg); 14712 } 14713 14714 static void nl80211_send_remain_on_chan_event( 14715 int cmd, struct cfg80211_registered_device *rdev, 14716 struct wireless_dev *wdev, u64 cookie, 14717 struct ieee80211_channel *chan, 14718 unsigned int duration, gfp_t gfp) 14719 { 14720 struct sk_buff *msg; 14721 void *hdr; 14722 14723 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14724 if (!msg) 14725 return; 14726 14727 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14728 if (!hdr) { 14729 nlmsg_free(msg); 14730 return; 14731 } 14732 14733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14734 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14735 wdev->netdev->ifindex)) || 14736 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14737 NL80211_ATTR_PAD) || 14738 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 14739 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 14740 NL80211_CHAN_NO_HT) || 14741 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14742 NL80211_ATTR_PAD)) 14743 goto nla_put_failure; 14744 14745 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 14746 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 14747 goto nla_put_failure; 14748 14749 genlmsg_end(msg, hdr); 14750 14751 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14752 NL80211_MCGRP_MLME, gfp); 14753 return; 14754 14755 nla_put_failure: 14756 nlmsg_free(msg); 14757 } 14758 14759 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 14760 struct ieee80211_channel *chan, 14761 unsigned int duration, gfp_t gfp) 14762 { 14763 struct wiphy *wiphy = wdev->wiphy; 14764 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14765 14766 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 14767 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 14768 rdev, wdev, cookie, chan, 14769 duration, gfp); 14770 } 14771 EXPORT_SYMBOL(cfg80211_ready_on_channel); 14772 14773 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 14774 struct ieee80211_channel *chan, 14775 gfp_t gfp) 14776 { 14777 struct wiphy *wiphy = wdev->wiphy; 14778 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14779 14780 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 14781 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 14782 rdev, wdev, cookie, chan, 0, gfp); 14783 } 14784 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 14785 14786 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 14787 struct station_info *sinfo, gfp_t gfp) 14788 { 14789 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14790 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14791 struct sk_buff *msg; 14792 14793 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 14794 14795 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14796 if (!msg) 14797 return; 14798 14799 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 14800 rdev, dev, mac_addr, sinfo) < 0) { 14801 nlmsg_free(msg); 14802 return; 14803 } 14804 14805 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14806 NL80211_MCGRP_MLME, gfp); 14807 } 14808 EXPORT_SYMBOL(cfg80211_new_sta); 14809 14810 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 14811 struct station_info *sinfo, gfp_t gfp) 14812 { 14813 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14814 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14815 struct sk_buff *msg; 14816 struct station_info empty_sinfo = {}; 14817 14818 if (!sinfo) 14819 sinfo = &empty_sinfo; 14820 14821 trace_cfg80211_del_sta(dev, mac_addr); 14822 14823 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14824 if (!msg) { 14825 cfg80211_sinfo_release_content(sinfo); 14826 return; 14827 } 14828 14829 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 14830 rdev, dev, mac_addr, sinfo) < 0) { 14831 nlmsg_free(msg); 14832 return; 14833 } 14834 14835 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14836 NL80211_MCGRP_MLME, gfp); 14837 } 14838 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 14839 14840 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 14841 enum nl80211_connect_failed_reason reason, 14842 gfp_t gfp) 14843 { 14844 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14845 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14846 struct sk_buff *msg; 14847 void *hdr; 14848 14849 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 14850 if (!msg) 14851 return; 14852 14853 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 14854 if (!hdr) { 14855 nlmsg_free(msg); 14856 return; 14857 } 14858 14859 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14860 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 14861 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 14862 goto nla_put_failure; 14863 14864 genlmsg_end(msg, hdr); 14865 14866 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14867 NL80211_MCGRP_MLME, gfp); 14868 return; 14869 14870 nla_put_failure: 14871 nlmsg_free(msg); 14872 } 14873 EXPORT_SYMBOL(cfg80211_conn_failed); 14874 14875 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 14876 const u8 *addr, gfp_t gfp) 14877 { 14878 struct wireless_dev *wdev = dev->ieee80211_ptr; 14879 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14880 struct sk_buff *msg; 14881 void *hdr; 14882 u32 nlportid = READ_ONCE(wdev->ap_unexpected_nlportid); 14883 14884 if (!nlportid) 14885 return false; 14886 14887 msg = nlmsg_new(100, gfp); 14888 if (!msg) 14889 return true; 14890 14891 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14892 if (!hdr) { 14893 nlmsg_free(msg); 14894 return true; 14895 } 14896 14897 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14898 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14899 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14900 goto nla_put_failure; 14901 14902 genlmsg_end(msg, hdr); 14903 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14904 return true; 14905 14906 nla_put_failure: 14907 nlmsg_free(msg); 14908 return true; 14909 } 14910 14911 bool cfg80211_rx_spurious_frame(struct net_device *dev, 14912 const u8 *addr, gfp_t gfp) 14913 { 14914 struct wireless_dev *wdev = dev->ieee80211_ptr; 14915 bool ret; 14916 14917 trace_cfg80211_rx_spurious_frame(dev, addr); 14918 14919 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14920 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 14921 trace_cfg80211_return_bool(false); 14922 return false; 14923 } 14924 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 14925 addr, gfp); 14926 trace_cfg80211_return_bool(ret); 14927 return ret; 14928 } 14929 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 14930 14931 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 14932 const u8 *addr, gfp_t gfp) 14933 { 14934 struct wireless_dev *wdev = dev->ieee80211_ptr; 14935 bool ret; 14936 14937 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 14938 14939 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14940 wdev->iftype != NL80211_IFTYPE_P2P_GO && 14941 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 14942 trace_cfg80211_return_bool(false); 14943 return false; 14944 } 14945 ret = __nl80211_unexpected_frame(dev, 14946 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 14947 addr, gfp); 14948 trace_cfg80211_return_bool(ret); 14949 return ret; 14950 } 14951 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 14952 14953 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 14954 struct wireless_dev *wdev, u32 nlportid, 14955 int freq, int sig_dbm, 14956 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 14957 { 14958 struct net_device *netdev = wdev->netdev; 14959 struct sk_buff *msg; 14960 void *hdr; 14961 14962 msg = nlmsg_new(100 + len, gfp); 14963 if (!msg) 14964 return -ENOMEM; 14965 14966 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14967 if (!hdr) { 14968 nlmsg_free(msg); 14969 return -ENOMEM; 14970 } 14971 14972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14973 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14974 netdev->ifindex)) || 14975 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14976 NL80211_ATTR_PAD) || 14977 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 14978 (sig_dbm && 14979 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14980 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14981 (flags && 14982 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 14983 goto nla_put_failure; 14984 14985 genlmsg_end(msg, hdr); 14986 14987 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14988 14989 nla_put_failure: 14990 nlmsg_free(msg); 14991 return -ENOBUFS; 14992 } 14993 14994 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 14995 const u8 *buf, size_t len, bool ack, gfp_t gfp) 14996 { 14997 struct wiphy *wiphy = wdev->wiphy; 14998 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14999 struct net_device *netdev = wdev->netdev; 15000 struct sk_buff *msg; 15001 void *hdr; 15002 15003 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 15004 15005 msg = nlmsg_new(100 + len, gfp); 15006 if (!msg) 15007 return; 15008 15009 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 15010 if (!hdr) { 15011 nlmsg_free(msg); 15012 return; 15013 } 15014 15015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15016 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15017 netdev->ifindex)) || 15018 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15019 NL80211_ATTR_PAD) || 15020 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 15021 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 15022 NL80211_ATTR_PAD) || 15023 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 15024 goto nla_put_failure; 15025 15026 genlmsg_end(msg, hdr); 15027 15028 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15029 NL80211_MCGRP_MLME, gfp); 15030 return; 15031 15032 nla_put_failure: 15033 nlmsg_free(msg); 15034 } 15035 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 15036 15037 static int __nl80211_rx_control_port(struct net_device *dev, 15038 struct sk_buff *skb, 15039 bool unencrypted, gfp_t gfp) 15040 { 15041 struct wireless_dev *wdev = dev->ieee80211_ptr; 15042 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15043 struct ethhdr *ehdr = eth_hdr(skb); 15044 const u8 *addr = ehdr->h_source; 15045 u16 proto = be16_to_cpu(skb->protocol); 15046 struct sk_buff *msg; 15047 void *hdr; 15048 struct nlattr *frame; 15049 15050 u32 nlportid = READ_ONCE(wdev->conn_owner_nlportid); 15051 15052 if (!nlportid) 15053 return -ENOENT; 15054 15055 msg = nlmsg_new(100 + skb->len, gfp); 15056 if (!msg) 15057 return -ENOMEM; 15058 15059 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONTROL_PORT_FRAME); 15060 if (!hdr) { 15061 nlmsg_free(msg); 15062 return -ENOBUFS; 15063 } 15064 15065 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15066 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15067 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15068 NL80211_ATTR_PAD) || 15069 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 15070 nla_put_u16(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE, proto) || 15071 (unencrypted && nla_put_flag(msg, 15072 NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT))) 15073 goto nla_put_failure; 15074 15075 frame = nla_reserve(msg, NL80211_ATTR_FRAME, skb->len); 15076 if (!frame) 15077 goto nla_put_failure; 15078 15079 skb_copy_bits(skb, 0, nla_data(frame), skb->len); 15080 genlmsg_end(msg, hdr); 15081 15082 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15083 15084 nla_put_failure: 15085 nlmsg_free(msg); 15086 return -ENOBUFS; 15087 } 15088 15089 bool cfg80211_rx_control_port(struct net_device *dev, 15090 struct sk_buff *skb, bool unencrypted) 15091 { 15092 int ret; 15093 15094 trace_cfg80211_rx_control_port(dev, skb, unencrypted); 15095 ret = __nl80211_rx_control_port(dev, skb, unencrypted, GFP_ATOMIC); 15096 trace_cfg80211_return_bool(ret == 0); 15097 return ret == 0; 15098 } 15099 EXPORT_SYMBOL(cfg80211_rx_control_port); 15100 15101 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 15102 const char *mac, gfp_t gfp) 15103 { 15104 struct wireless_dev *wdev = dev->ieee80211_ptr; 15105 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15106 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15107 void **cb; 15108 15109 if (!msg) 15110 return NULL; 15111 15112 cb = (void **)msg->cb; 15113 15114 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 15115 if (!cb[0]) { 15116 nlmsg_free(msg); 15117 return NULL; 15118 } 15119 15120 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15121 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 15122 goto nla_put_failure; 15123 15124 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 15125 goto nla_put_failure; 15126 15127 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 15128 if (!cb[1]) 15129 goto nla_put_failure; 15130 15131 cb[2] = rdev; 15132 15133 return msg; 15134 nla_put_failure: 15135 nlmsg_free(msg); 15136 return NULL; 15137 } 15138 15139 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 15140 { 15141 void **cb = (void **)msg->cb; 15142 struct cfg80211_registered_device *rdev = cb[2]; 15143 15144 nla_nest_end(msg, cb[1]); 15145 genlmsg_end(msg, cb[0]); 15146 15147 memset(msg->cb, 0, sizeof(msg->cb)); 15148 15149 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15150 NL80211_MCGRP_MLME, gfp); 15151 } 15152 15153 void cfg80211_cqm_rssi_notify(struct net_device *dev, 15154 enum nl80211_cqm_rssi_threshold_event rssi_event, 15155 s32 rssi_level, gfp_t gfp) 15156 { 15157 struct sk_buff *msg; 15158 struct wireless_dev *wdev = dev->ieee80211_ptr; 15159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15160 15161 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 15162 15163 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 15164 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 15165 return; 15166 15167 if (wdev->cqm_config) { 15168 wdev->cqm_config->last_rssi_event_value = rssi_level; 15169 15170 cfg80211_cqm_rssi_update(rdev, dev); 15171 15172 if (rssi_level == 0) 15173 rssi_level = wdev->cqm_config->last_rssi_event_value; 15174 } 15175 15176 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 15177 if (!msg) 15178 return; 15179 15180 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 15181 rssi_event)) 15182 goto nla_put_failure; 15183 15184 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 15185 rssi_level)) 15186 goto nla_put_failure; 15187 15188 cfg80211_send_cqm(msg, gfp); 15189 15190 return; 15191 15192 nla_put_failure: 15193 nlmsg_free(msg); 15194 } 15195 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 15196 15197 void cfg80211_cqm_txe_notify(struct net_device *dev, 15198 const u8 *peer, u32 num_packets, 15199 u32 rate, u32 intvl, gfp_t gfp) 15200 { 15201 struct sk_buff *msg; 15202 15203 msg = cfg80211_prepare_cqm(dev, peer, gfp); 15204 if (!msg) 15205 return; 15206 15207 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 15208 goto nla_put_failure; 15209 15210 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 15211 goto nla_put_failure; 15212 15213 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 15214 goto nla_put_failure; 15215 15216 cfg80211_send_cqm(msg, gfp); 15217 return; 15218 15219 nla_put_failure: 15220 nlmsg_free(msg); 15221 } 15222 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 15223 15224 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 15225 const u8 *peer, u32 num_packets, gfp_t gfp) 15226 { 15227 struct sk_buff *msg; 15228 15229 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 15230 15231 msg = cfg80211_prepare_cqm(dev, peer, gfp); 15232 if (!msg) 15233 return; 15234 15235 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 15236 goto nla_put_failure; 15237 15238 cfg80211_send_cqm(msg, gfp); 15239 return; 15240 15241 nla_put_failure: 15242 nlmsg_free(msg); 15243 } 15244 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 15245 15246 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 15247 { 15248 struct sk_buff *msg; 15249 15250 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 15251 if (!msg) 15252 return; 15253 15254 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 15255 goto nla_put_failure; 15256 15257 cfg80211_send_cqm(msg, gfp); 15258 return; 15259 15260 nla_put_failure: 15261 nlmsg_free(msg); 15262 } 15263 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 15264 15265 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 15266 struct net_device *netdev, const u8 *bssid, 15267 const u8 *replay_ctr, gfp_t gfp) 15268 { 15269 struct sk_buff *msg; 15270 struct nlattr *rekey_attr; 15271 void *hdr; 15272 15273 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15274 if (!msg) 15275 return; 15276 15277 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 15278 if (!hdr) { 15279 nlmsg_free(msg); 15280 return; 15281 } 15282 15283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15284 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15285 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 15286 goto nla_put_failure; 15287 15288 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 15289 if (!rekey_attr) 15290 goto nla_put_failure; 15291 15292 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 15293 NL80211_REPLAY_CTR_LEN, replay_ctr)) 15294 goto nla_put_failure; 15295 15296 nla_nest_end(msg, rekey_attr); 15297 15298 genlmsg_end(msg, hdr); 15299 15300 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15301 NL80211_MCGRP_MLME, gfp); 15302 return; 15303 15304 nla_put_failure: 15305 nlmsg_free(msg); 15306 } 15307 15308 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 15309 const u8 *replay_ctr, gfp_t gfp) 15310 { 15311 struct wireless_dev *wdev = dev->ieee80211_ptr; 15312 struct wiphy *wiphy = wdev->wiphy; 15313 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15314 15315 trace_cfg80211_gtk_rekey_notify(dev, bssid); 15316 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 15317 } 15318 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 15319 15320 static void 15321 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 15322 struct net_device *netdev, int index, 15323 const u8 *bssid, bool preauth, gfp_t gfp) 15324 { 15325 struct sk_buff *msg; 15326 struct nlattr *attr; 15327 void *hdr; 15328 15329 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15330 if (!msg) 15331 return; 15332 15333 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 15334 if (!hdr) { 15335 nlmsg_free(msg); 15336 return; 15337 } 15338 15339 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15340 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 15341 goto nla_put_failure; 15342 15343 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 15344 if (!attr) 15345 goto nla_put_failure; 15346 15347 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 15348 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 15349 (preauth && 15350 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 15351 goto nla_put_failure; 15352 15353 nla_nest_end(msg, attr); 15354 15355 genlmsg_end(msg, hdr); 15356 15357 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15358 NL80211_MCGRP_MLME, gfp); 15359 return; 15360 15361 nla_put_failure: 15362 nlmsg_free(msg); 15363 } 15364 15365 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 15366 const u8 *bssid, bool preauth, gfp_t gfp) 15367 { 15368 struct wireless_dev *wdev = dev->ieee80211_ptr; 15369 struct wiphy *wiphy = wdev->wiphy; 15370 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15371 15372 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 15373 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 15374 } 15375 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 15376 15377 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 15378 struct net_device *netdev, 15379 struct cfg80211_chan_def *chandef, 15380 gfp_t gfp, 15381 enum nl80211_commands notif, 15382 u8 count) 15383 { 15384 struct sk_buff *msg; 15385 void *hdr; 15386 15387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15388 if (!msg) 15389 return; 15390 15391 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 15392 if (!hdr) { 15393 nlmsg_free(msg); 15394 return; 15395 } 15396 15397 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 15398 goto nla_put_failure; 15399 15400 if (nl80211_send_chandef(msg, chandef)) 15401 goto nla_put_failure; 15402 15403 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 15404 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 15405 goto nla_put_failure; 15406 15407 genlmsg_end(msg, hdr); 15408 15409 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15410 NL80211_MCGRP_MLME, gfp); 15411 return; 15412 15413 nla_put_failure: 15414 nlmsg_free(msg); 15415 } 15416 15417 void cfg80211_ch_switch_notify(struct net_device *dev, 15418 struct cfg80211_chan_def *chandef) 15419 { 15420 struct wireless_dev *wdev = dev->ieee80211_ptr; 15421 struct wiphy *wiphy = wdev->wiphy; 15422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15423 15424 ASSERT_WDEV_LOCK(wdev); 15425 15426 trace_cfg80211_ch_switch_notify(dev, chandef); 15427 15428 wdev->chandef = *chandef; 15429 wdev->preset_chandef = *chandef; 15430 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 15431 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 15432 } 15433 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 15434 15435 void cfg80211_ch_switch_started_notify(struct net_device *dev, 15436 struct cfg80211_chan_def *chandef, 15437 u8 count) 15438 { 15439 struct wireless_dev *wdev = dev->ieee80211_ptr; 15440 struct wiphy *wiphy = wdev->wiphy; 15441 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15442 15443 trace_cfg80211_ch_switch_started_notify(dev, chandef); 15444 15445 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 15446 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 15447 } 15448 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 15449 15450 void 15451 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 15452 const struct cfg80211_chan_def *chandef, 15453 enum nl80211_radar_event event, 15454 struct net_device *netdev, gfp_t gfp) 15455 { 15456 struct sk_buff *msg; 15457 void *hdr; 15458 15459 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15460 if (!msg) 15461 return; 15462 15463 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 15464 if (!hdr) { 15465 nlmsg_free(msg); 15466 return; 15467 } 15468 15469 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 15470 goto nla_put_failure; 15471 15472 /* NOP and radar events don't need a netdev parameter */ 15473 if (netdev) { 15474 struct wireless_dev *wdev = netdev->ieee80211_ptr; 15475 15476 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15477 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15478 NL80211_ATTR_PAD)) 15479 goto nla_put_failure; 15480 } 15481 15482 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 15483 goto nla_put_failure; 15484 15485 if (nl80211_send_chandef(msg, chandef)) 15486 goto nla_put_failure; 15487 15488 genlmsg_end(msg, hdr); 15489 15490 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15491 NL80211_MCGRP_MLME, gfp); 15492 return; 15493 15494 nla_put_failure: 15495 nlmsg_free(msg); 15496 } 15497 15498 void cfg80211_sta_opmode_change_notify(struct net_device *dev, const u8 *mac, 15499 struct sta_opmode_info *sta_opmode, 15500 gfp_t gfp) 15501 { 15502 struct sk_buff *msg; 15503 struct wireless_dev *wdev = dev->ieee80211_ptr; 15504 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15505 void *hdr; 15506 15507 if (WARN_ON(!mac)) 15508 return; 15509 15510 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15511 if (!msg) 15512 return; 15513 15514 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STA_OPMODE_CHANGED); 15515 if (!hdr) { 15516 nlmsg_free(msg); 15517 return; 15518 } 15519 15520 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 15521 goto nla_put_failure; 15522 15523 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 15524 goto nla_put_failure; 15525 15526 if (nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 15527 goto nla_put_failure; 15528 15529 if ((sta_opmode->changed & STA_OPMODE_SMPS_MODE_CHANGED) && 15530 nla_put_u8(msg, NL80211_ATTR_SMPS_MODE, sta_opmode->smps_mode)) 15531 goto nla_put_failure; 15532 15533 if ((sta_opmode->changed & STA_OPMODE_MAX_BW_CHANGED) && 15534 nla_put_u8(msg, NL80211_ATTR_CHANNEL_WIDTH, sta_opmode->bw)) 15535 goto nla_put_failure; 15536 15537 if ((sta_opmode->changed & STA_OPMODE_N_SS_CHANGED) && 15538 nla_put_u8(msg, NL80211_ATTR_NSS, sta_opmode->rx_nss)) 15539 goto nla_put_failure; 15540 15541 genlmsg_end(msg, hdr); 15542 15543 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15544 NL80211_MCGRP_MLME, gfp); 15545 15546 return; 15547 15548 nla_put_failure: 15549 nlmsg_free(msg); 15550 } 15551 EXPORT_SYMBOL(cfg80211_sta_opmode_change_notify); 15552 15553 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 15554 u64 cookie, bool acked, s32 ack_signal, 15555 bool is_valid_ack_signal, gfp_t gfp) 15556 { 15557 struct wireless_dev *wdev = dev->ieee80211_ptr; 15558 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15559 struct sk_buff *msg; 15560 void *hdr; 15561 15562 trace_cfg80211_probe_status(dev, addr, cookie, acked); 15563 15564 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15565 15566 if (!msg) 15567 return; 15568 15569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 15570 if (!hdr) { 15571 nlmsg_free(msg); 15572 return; 15573 } 15574 15575 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15576 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15577 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 15578 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 15579 NL80211_ATTR_PAD) || 15580 (acked && nla_put_flag(msg, NL80211_ATTR_ACK)) || 15581 (is_valid_ack_signal && nla_put_s32(msg, NL80211_ATTR_ACK_SIGNAL, 15582 ack_signal))) 15583 goto nla_put_failure; 15584 15585 genlmsg_end(msg, hdr); 15586 15587 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15588 NL80211_MCGRP_MLME, gfp); 15589 return; 15590 15591 nla_put_failure: 15592 nlmsg_free(msg); 15593 } 15594 EXPORT_SYMBOL(cfg80211_probe_status); 15595 15596 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 15597 const u8 *frame, size_t len, 15598 int freq, int sig_dbm) 15599 { 15600 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15601 struct sk_buff *msg; 15602 void *hdr; 15603 struct cfg80211_beacon_registration *reg; 15604 15605 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 15606 15607 spin_lock_bh(&rdev->beacon_registrations_lock); 15608 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 15609 msg = nlmsg_new(len + 100, GFP_ATOMIC); 15610 if (!msg) { 15611 spin_unlock_bh(&rdev->beacon_registrations_lock); 15612 return; 15613 } 15614 15615 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 15616 if (!hdr) 15617 goto nla_put_failure; 15618 15619 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15620 (freq && 15621 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 15622 (sig_dbm && 15623 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 15624 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 15625 goto nla_put_failure; 15626 15627 genlmsg_end(msg, hdr); 15628 15629 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 15630 } 15631 spin_unlock_bh(&rdev->beacon_registrations_lock); 15632 return; 15633 15634 nla_put_failure: 15635 spin_unlock_bh(&rdev->beacon_registrations_lock); 15636 nlmsg_free(msg); 15637 } 15638 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 15639 15640 #ifdef CONFIG_PM 15641 static int cfg80211_net_detect_results(struct sk_buff *msg, 15642 struct cfg80211_wowlan_wakeup *wakeup) 15643 { 15644 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 15645 struct nlattr *nl_results, *nl_match, *nl_freqs; 15646 int i, j; 15647 15648 nl_results = nla_nest_start( 15649 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 15650 if (!nl_results) 15651 return -EMSGSIZE; 15652 15653 for (i = 0; i < nd->n_matches; i++) { 15654 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 15655 15656 nl_match = nla_nest_start(msg, i); 15657 if (!nl_match) 15658 break; 15659 15660 /* The SSID attribute is optional in nl80211, but for 15661 * simplicity reasons it's always present in the 15662 * cfg80211 structure. If a driver can't pass the 15663 * SSID, that needs to be changed. A zero length SSID 15664 * is still a valid SSID (wildcard), so it cannot be 15665 * used for this purpose. 15666 */ 15667 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 15668 match->ssid.ssid)) { 15669 nla_nest_cancel(msg, nl_match); 15670 goto out; 15671 } 15672 15673 if (match->n_channels) { 15674 nl_freqs = nla_nest_start( 15675 msg, NL80211_ATTR_SCAN_FREQUENCIES); 15676 if (!nl_freqs) { 15677 nla_nest_cancel(msg, nl_match); 15678 goto out; 15679 } 15680 15681 for (j = 0; j < match->n_channels; j++) { 15682 if (nla_put_u32(msg, j, match->channels[j])) { 15683 nla_nest_cancel(msg, nl_freqs); 15684 nla_nest_cancel(msg, nl_match); 15685 goto out; 15686 } 15687 } 15688 15689 nla_nest_end(msg, nl_freqs); 15690 } 15691 15692 nla_nest_end(msg, nl_match); 15693 } 15694 15695 out: 15696 nla_nest_end(msg, nl_results); 15697 return 0; 15698 } 15699 15700 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 15701 struct cfg80211_wowlan_wakeup *wakeup, 15702 gfp_t gfp) 15703 { 15704 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15705 struct sk_buff *msg; 15706 void *hdr; 15707 int size = 200; 15708 15709 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 15710 15711 if (wakeup) 15712 size += wakeup->packet_present_len; 15713 15714 msg = nlmsg_new(size, gfp); 15715 if (!msg) 15716 return; 15717 15718 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 15719 if (!hdr) 15720 goto free_msg; 15721 15722 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15723 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15724 NL80211_ATTR_PAD)) 15725 goto free_msg; 15726 15727 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 15728 wdev->netdev->ifindex)) 15729 goto free_msg; 15730 15731 if (wakeup) { 15732 struct nlattr *reasons; 15733 15734 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 15735 if (!reasons) 15736 goto free_msg; 15737 15738 if (wakeup->disconnect && 15739 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 15740 goto free_msg; 15741 if (wakeup->magic_pkt && 15742 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 15743 goto free_msg; 15744 if (wakeup->gtk_rekey_failure && 15745 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 15746 goto free_msg; 15747 if (wakeup->eap_identity_req && 15748 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 15749 goto free_msg; 15750 if (wakeup->four_way_handshake && 15751 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 15752 goto free_msg; 15753 if (wakeup->rfkill_release && 15754 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 15755 goto free_msg; 15756 15757 if (wakeup->pattern_idx >= 0 && 15758 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 15759 wakeup->pattern_idx)) 15760 goto free_msg; 15761 15762 if (wakeup->tcp_match && 15763 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 15764 goto free_msg; 15765 15766 if (wakeup->tcp_connlost && 15767 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 15768 goto free_msg; 15769 15770 if (wakeup->tcp_nomoretokens && 15771 nla_put_flag(msg, 15772 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 15773 goto free_msg; 15774 15775 if (wakeup->packet) { 15776 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 15777 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 15778 15779 if (!wakeup->packet_80211) { 15780 pkt_attr = 15781 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 15782 len_attr = 15783 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 15784 } 15785 15786 if (wakeup->packet_len && 15787 nla_put_u32(msg, len_attr, wakeup->packet_len)) 15788 goto free_msg; 15789 15790 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 15791 wakeup->packet)) 15792 goto free_msg; 15793 } 15794 15795 if (wakeup->net_detect && 15796 cfg80211_net_detect_results(msg, wakeup)) 15797 goto free_msg; 15798 15799 nla_nest_end(msg, reasons); 15800 } 15801 15802 genlmsg_end(msg, hdr); 15803 15804 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15805 NL80211_MCGRP_MLME, gfp); 15806 return; 15807 15808 free_msg: 15809 nlmsg_free(msg); 15810 } 15811 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 15812 #endif 15813 15814 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 15815 enum nl80211_tdls_operation oper, 15816 u16 reason_code, gfp_t gfp) 15817 { 15818 struct wireless_dev *wdev = dev->ieee80211_ptr; 15819 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15820 struct sk_buff *msg; 15821 void *hdr; 15822 15823 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 15824 reason_code); 15825 15826 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15827 if (!msg) 15828 return; 15829 15830 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 15831 if (!hdr) { 15832 nlmsg_free(msg); 15833 return; 15834 } 15835 15836 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15837 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15838 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 15839 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 15840 (reason_code > 0 && 15841 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 15842 goto nla_put_failure; 15843 15844 genlmsg_end(msg, hdr); 15845 15846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15847 NL80211_MCGRP_MLME, gfp); 15848 return; 15849 15850 nla_put_failure: 15851 nlmsg_free(msg); 15852 } 15853 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 15854 15855 static int nl80211_netlink_notify(struct notifier_block * nb, 15856 unsigned long state, 15857 void *_notify) 15858 { 15859 struct netlink_notify *notify = _notify; 15860 struct cfg80211_registered_device *rdev; 15861 struct wireless_dev *wdev; 15862 struct cfg80211_beacon_registration *reg, *tmp; 15863 15864 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 15865 return NOTIFY_DONE; 15866 15867 rcu_read_lock(); 15868 15869 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 15870 struct cfg80211_sched_scan_request *sched_scan_req; 15871 15872 list_for_each_entry_rcu(sched_scan_req, 15873 &rdev->sched_scan_req_list, 15874 list) { 15875 if (sched_scan_req->owner_nlportid == notify->portid) { 15876 sched_scan_req->nl_owner_dead = true; 15877 schedule_work(&rdev->sched_scan_stop_wk); 15878 } 15879 } 15880 15881 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 15882 cfg80211_mlme_unregister_socket(wdev, notify->portid); 15883 15884 if (wdev->owner_nlportid == notify->portid) { 15885 wdev->nl_owner_dead = true; 15886 schedule_work(&rdev->destroy_work); 15887 } else if (wdev->conn_owner_nlportid == notify->portid) { 15888 schedule_work(&wdev->disconnect_wk); 15889 } 15890 } 15891 15892 spin_lock_bh(&rdev->beacon_registrations_lock); 15893 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 15894 list) { 15895 if (reg->nlportid == notify->portid) { 15896 list_del(®->list); 15897 kfree(reg); 15898 break; 15899 } 15900 } 15901 spin_unlock_bh(&rdev->beacon_registrations_lock); 15902 } 15903 15904 rcu_read_unlock(); 15905 15906 /* 15907 * It is possible that the user space process that is controlling the 15908 * indoor setting disappeared, so notify the regulatory core. 15909 */ 15910 regulatory_netlink_notify(notify->portid); 15911 return NOTIFY_OK; 15912 } 15913 15914 static struct notifier_block nl80211_netlink_notifier = { 15915 .notifier_call = nl80211_netlink_notify, 15916 }; 15917 15918 void cfg80211_ft_event(struct net_device *netdev, 15919 struct cfg80211_ft_event_params *ft_event) 15920 { 15921 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 15922 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15923 struct sk_buff *msg; 15924 void *hdr; 15925 15926 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 15927 15928 if (!ft_event->target_ap) 15929 return; 15930 15931 msg = nlmsg_new(100 + ft_event->ies_len + ft_event->ric_ies_len, 15932 GFP_KERNEL); 15933 if (!msg) 15934 return; 15935 15936 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 15937 if (!hdr) 15938 goto out; 15939 15940 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15941 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15942 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 15943 goto out; 15944 15945 if (ft_event->ies && 15946 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 15947 goto out; 15948 if (ft_event->ric_ies && 15949 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 15950 ft_event->ric_ies)) 15951 goto out; 15952 15953 genlmsg_end(msg, hdr); 15954 15955 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15956 NL80211_MCGRP_MLME, GFP_KERNEL); 15957 return; 15958 out: 15959 nlmsg_free(msg); 15960 } 15961 EXPORT_SYMBOL(cfg80211_ft_event); 15962 15963 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 15964 { 15965 struct cfg80211_registered_device *rdev; 15966 struct sk_buff *msg; 15967 void *hdr; 15968 u32 nlportid; 15969 15970 rdev = wiphy_to_rdev(wdev->wiphy); 15971 if (!rdev->crit_proto_nlportid) 15972 return; 15973 15974 nlportid = rdev->crit_proto_nlportid; 15975 rdev->crit_proto_nlportid = 0; 15976 15977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15978 if (!msg) 15979 return; 15980 15981 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 15982 if (!hdr) 15983 goto nla_put_failure; 15984 15985 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15986 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15987 NL80211_ATTR_PAD)) 15988 goto nla_put_failure; 15989 15990 genlmsg_end(msg, hdr); 15991 15992 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15993 return; 15994 15995 nla_put_failure: 15996 nlmsg_free(msg); 15997 } 15998 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 15999 16000 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 16001 { 16002 struct wiphy *wiphy = wdev->wiphy; 16003 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 16004 struct sk_buff *msg; 16005 void *hdr; 16006 16007 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 16008 if (!msg) 16009 return; 16010 16011 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 16012 if (!hdr) 16013 goto out; 16014 16015 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16016 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 16017 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 16018 NL80211_ATTR_PAD)) 16019 goto out; 16020 16021 genlmsg_end(msg, hdr); 16022 16023 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 16024 NL80211_MCGRP_MLME, GFP_KERNEL); 16025 return; 16026 out: 16027 nlmsg_free(msg); 16028 } 16029 16030 int cfg80211_external_auth_request(struct net_device *dev, 16031 struct cfg80211_external_auth_params *params, 16032 gfp_t gfp) 16033 { 16034 struct wireless_dev *wdev = dev->ieee80211_ptr; 16035 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 16036 struct sk_buff *msg; 16037 void *hdr; 16038 16039 if (!wdev->conn_owner_nlportid) 16040 return -EINVAL; 16041 16042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 16043 if (!msg) 16044 return -ENOMEM; 16045 16046 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_EXTERNAL_AUTH); 16047 if (!hdr) 16048 goto nla_put_failure; 16049 16050 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 16051 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 16052 nla_put_u32(msg, NL80211_ATTR_AKM_SUITES, params->key_mgmt_suite) || 16053 nla_put_u32(msg, NL80211_ATTR_EXTERNAL_AUTH_ACTION, 16054 params->action) || 16055 nla_put(msg, NL80211_ATTR_BSSID, ETH_ALEN, params->bssid) || 16056 nla_put(msg, NL80211_ATTR_SSID, params->ssid.ssid_len, 16057 params->ssid.ssid)) 16058 goto nla_put_failure; 16059 16060 genlmsg_end(msg, hdr); 16061 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 16062 wdev->conn_owner_nlportid); 16063 return 0; 16064 16065 nla_put_failure: 16066 nlmsg_free(msg); 16067 return -ENOBUFS; 16068 } 16069 EXPORT_SYMBOL(cfg80211_external_auth_request); 16070 16071 /* initialisation/exit functions */ 16072 16073 int __init nl80211_init(void) 16074 { 16075 int err; 16076 16077 err = genl_register_family(&nl80211_fam); 16078 if (err) 16079 return err; 16080 16081 err = netlink_register_notifier(&nl80211_netlink_notifier); 16082 if (err) 16083 goto err_out; 16084 16085 return 0; 16086 err_out: 16087 genl_unregister_family(&nl80211_fam); 16088 return err; 16089 } 16090 16091 void nl80211_exit(void) 16092 { 16093 netlink_unregister_notifier(&nl80211_netlink_notifier); 16094 genl_unregister_family(&nl80211_fam); 16095 } 16096