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 */ 8 9 #include <linux/if.h> 10 #include <linux/module.h> 11 #include <linux/err.h> 12 #include <linux/slab.h> 13 #include <linux/list.h> 14 #include <linux/if_ether.h> 15 #include <linux/ieee80211.h> 16 #include <linux/nl80211.h> 17 #include <linux/rtnetlink.h> 18 #include <linux/netlink.h> 19 #include <linux/etherdevice.h> 20 #include <net/net_namespace.h> 21 #include <net/genetlink.h> 22 #include <net/cfg80211.h> 23 #include <net/sock.h> 24 #include <net/inet_connection_sock.h> 25 #include "core.h" 26 #include "nl80211.h" 27 #include "reg.h" 28 #include "rdev-ops.h" 29 30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 31 struct genl_info *info, 32 struct cfg80211_crypto_settings *settings, 33 int cipher_limit); 34 35 /* the netlink family */ 36 static struct genl_family nl80211_fam; 37 38 /* multicast groups */ 39 enum nl80211_multicast_groups { 40 NL80211_MCGRP_CONFIG, 41 NL80211_MCGRP_SCAN, 42 NL80211_MCGRP_REGULATORY, 43 NL80211_MCGRP_MLME, 44 NL80211_MCGRP_VENDOR, 45 NL80211_MCGRP_NAN, 46 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 47 }; 48 49 static const struct genl_multicast_group nl80211_mcgrps[] = { 50 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 51 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 52 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 53 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 54 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 55 [NL80211_MCGRP_NAN] = { .name = NL80211_MULTICAST_GROUP_NAN }, 56 #ifdef CONFIG_NL80211_TESTMODE 57 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 58 #endif 59 }; 60 61 /* returns ERR_PTR values */ 62 static struct wireless_dev * 63 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 64 { 65 struct cfg80211_registered_device *rdev; 66 struct wireless_dev *result = NULL; 67 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 68 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 69 u64 wdev_id; 70 int wiphy_idx = -1; 71 int ifidx = -1; 72 73 ASSERT_RTNL(); 74 75 if (!have_ifidx && !have_wdev_id) 76 return ERR_PTR(-EINVAL); 77 78 if (have_ifidx) 79 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 80 if (have_wdev_id) { 81 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 82 wiphy_idx = wdev_id >> 32; 83 } 84 85 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 86 struct wireless_dev *wdev; 87 88 if (wiphy_net(&rdev->wiphy) != netns) 89 continue; 90 91 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 92 continue; 93 94 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 95 if (have_ifidx && wdev->netdev && 96 wdev->netdev->ifindex == ifidx) { 97 result = wdev; 98 break; 99 } 100 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 101 result = wdev; 102 break; 103 } 104 } 105 106 if (result) 107 break; 108 } 109 110 if (result) 111 return result; 112 return ERR_PTR(-ENODEV); 113 } 114 115 static struct cfg80211_registered_device * 116 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 117 { 118 struct cfg80211_registered_device *rdev = NULL, *tmp; 119 struct net_device *netdev; 120 121 ASSERT_RTNL(); 122 123 if (!attrs[NL80211_ATTR_WIPHY] && 124 !attrs[NL80211_ATTR_IFINDEX] && 125 !attrs[NL80211_ATTR_WDEV]) 126 return ERR_PTR(-EINVAL); 127 128 if (attrs[NL80211_ATTR_WIPHY]) 129 rdev = cfg80211_rdev_by_wiphy_idx( 130 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 131 132 if (attrs[NL80211_ATTR_WDEV]) { 133 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 134 struct wireless_dev *wdev; 135 bool found = false; 136 137 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 138 if (tmp) { 139 /* make sure wdev exists */ 140 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 141 if (wdev->identifier != (u32)wdev_id) 142 continue; 143 found = true; 144 break; 145 } 146 147 if (!found) 148 tmp = NULL; 149 150 if (rdev && tmp != rdev) 151 return ERR_PTR(-EINVAL); 152 rdev = tmp; 153 } 154 } 155 156 if (attrs[NL80211_ATTR_IFINDEX]) { 157 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 158 159 netdev = __dev_get_by_index(netns, ifindex); 160 if (netdev) { 161 if (netdev->ieee80211_ptr) 162 tmp = wiphy_to_rdev( 163 netdev->ieee80211_ptr->wiphy); 164 else 165 tmp = NULL; 166 167 /* not wireless device -- return error */ 168 if (!tmp) 169 return ERR_PTR(-EINVAL); 170 171 /* mismatch -- return error */ 172 if (rdev && tmp != rdev) 173 return ERR_PTR(-EINVAL); 174 175 rdev = tmp; 176 } 177 } 178 179 if (!rdev) 180 return ERR_PTR(-ENODEV); 181 182 if (netns != wiphy_net(&rdev->wiphy)) 183 return ERR_PTR(-ENODEV); 184 185 return rdev; 186 } 187 188 /* 189 * This function returns a pointer to the driver 190 * that the genl_info item that is passed refers to. 191 * 192 * The result of this can be a PTR_ERR and hence must 193 * be checked with IS_ERR() for errors. 194 */ 195 static struct cfg80211_registered_device * 196 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 197 { 198 return __cfg80211_rdev_from_attrs(netns, info->attrs); 199 } 200 201 /* policy for the attributes */ 202 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 203 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 204 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 205 .len = 20-1 }, 206 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 207 208 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 209 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 210 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 211 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 212 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 213 214 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 215 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 216 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 217 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 218 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 219 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 220 221 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 222 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 223 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 224 225 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 226 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 227 228 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 229 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 230 .len = WLAN_MAX_KEY_LEN }, 231 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 232 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 233 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 234 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 235 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 236 237 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 238 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 239 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 240 .len = IEEE80211_MAX_DATA_LEN }, 241 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 242 .len = IEEE80211_MAX_DATA_LEN }, 243 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 244 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 245 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 246 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 247 .len = NL80211_MAX_SUPP_RATES }, 248 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 249 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 250 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 251 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 252 .len = IEEE80211_MAX_MESH_ID_LEN }, 253 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 254 255 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 256 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 257 258 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 259 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 260 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 261 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 262 .len = NL80211_MAX_SUPP_RATES }, 263 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 264 265 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 266 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 267 268 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 269 270 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 271 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 272 .len = IEEE80211_MAX_DATA_LEN }, 273 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 274 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 275 276 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 277 .len = IEEE80211_MAX_SSID_LEN }, 278 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 279 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 280 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 281 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 282 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 283 [NL80211_ATTR_STA_FLAGS2] = { 284 .len = sizeof(struct nl80211_sta_flag_update), 285 }, 286 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 287 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 288 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 289 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 290 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 291 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 292 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 293 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 294 [NL80211_ATTR_PMKID] = { .len = WLAN_PMKID_LEN }, 295 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 296 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 297 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 298 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 299 .len = IEEE80211_MAX_DATA_LEN }, 300 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 301 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 302 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 303 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 304 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 305 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 306 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 307 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 308 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 309 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 310 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 311 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 312 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 313 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 314 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 315 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 316 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 317 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 318 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 319 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 320 .len = IEEE80211_MAX_DATA_LEN }, 321 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 322 .len = IEEE80211_MAX_DATA_LEN }, 323 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 324 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 325 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 326 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 327 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 328 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 329 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 330 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 331 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 332 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 333 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 334 .len = IEEE80211_MAX_DATA_LEN }, 335 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 336 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 338 .len = NL80211_HT_CAPABILITY_LEN 339 }, 340 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 341 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 342 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 343 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 344 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 345 [NL80211_ATTR_AUTH_DATA] = { .type = NLA_BINARY, }, 346 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 347 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 348 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 349 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 350 [NL80211_ATTR_LOCAL_MESH_POWER_MODE] = {. type = NLA_U32 }, 351 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 352 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 353 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 354 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 355 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 356 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 357 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 358 .len = NL80211_VHT_CAPABILITY_LEN, 359 }, 360 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 361 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 362 .len = IEEE80211_MAX_DATA_LEN }, 363 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 364 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 365 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 366 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 367 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 368 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 369 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 370 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 371 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 372 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 373 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 374 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 375 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 376 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 377 .len = IEEE80211_QOS_MAP_LEN_MAX }, 378 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 379 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 380 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 381 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 382 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 383 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 384 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 385 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 386 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 387 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 388 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 389 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 390 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 391 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 392 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 393 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 395 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 }, 396 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 397 .len = VHT_MUMIMO_GROUPS_DATA_LEN 398 }, 399 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN }, 400 [NL80211_ATTR_NAN_MASTER_PREF] = { .type = NLA_U8 }, 401 [NL80211_ATTR_BANDS] = { .type = NLA_U32 }, 402 [NL80211_ATTR_NAN_FUNC] = { .type = NLA_NESTED }, 403 [NL80211_ATTR_FILS_KEK] = { .type = NLA_BINARY, 404 .len = FILS_MAX_KEK_LEN }, 405 [NL80211_ATTR_FILS_NONCES] = { .len = 2 * FILS_NONCE_LEN }, 406 [NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED] = { .type = NLA_FLAG, }, 407 [NL80211_ATTR_BSSID] = { .len = ETH_ALEN }, 408 [NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] = { .type = NLA_S8 }, 409 [NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST] = { 410 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 411 }, 412 [NL80211_ATTR_TIMEOUT_REASON] = { .type = NLA_U32 }, 413 [NL80211_ATTR_FILS_ERP_USERNAME] = { .type = NLA_BINARY, 414 .len = FILS_ERP_MAX_USERNAME_LEN }, 415 [NL80211_ATTR_FILS_ERP_REALM] = { .type = NLA_BINARY, 416 .len = FILS_ERP_MAX_REALM_LEN }, 417 [NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] = { .type = NLA_U16 }, 418 [NL80211_ATTR_FILS_ERP_RRK] = { .type = NLA_BINARY, 419 .len = FILS_ERP_MAX_RRK_LEN }, 420 [NL80211_ATTR_FILS_CACHE_ID] = { .len = 2 }, 421 [NL80211_ATTR_PMK] = { .type = NLA_BINARY, .len = PMK_MAX_LEN }, 422 [NL80211_ATTR_SCHED_SCAN_MULTI] = { .type = NLA_FLAG }, 423 }; 424 425 /* policy for the key attributes */ 426 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 427 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 428 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 429 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 430 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 431 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 432 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 433 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 434 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 435 }; 436 437 /* policy for the key default flags */ 438 static const struct nla_policy 439 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 440 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 441 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 442 }; 443 444 #ifdef CONFIG_PM 445 /* policy for WoWLAN attributes */ 446 static const struct nla_policy 447 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 448 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 449 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 450 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 451 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 452 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 453 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 454 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 455 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 456 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 457 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 458 }; 459 460 static const struct nla_policy 461 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 462 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 463 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 464 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 465 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 466 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 467 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 468 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 469 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 470 }, 471 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 472 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 473 }, 474 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 475 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 476 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 477 }; 478 #endif /* CONFIG_PM */ 479 480 /* policy for coalesce rule attributes */ 481 static const struct nla_policy 482 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 483 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 484 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 485 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 486 }; 487 488 /* policy for GTK rekey offload attributes */ 489 static const struct nla_policy 490 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 491 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 492 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 493 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 494 }; 495 496 static const struct nla_policy 497 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 498 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 499 .len = IEEE80211_MAX_SSID_LEN }, 500 [NL80211_SCHED_SCAN_MATCH_ATTR_BSSID] = { .len = ETH_ALEN }, 501 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 502 }; 503 504 static const struct nla_policy 505 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 506 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 507 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 508 }; 509 510 static const struct nla_policy 511 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 512 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 513 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 514 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 515 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 516 }, 517 }; 518 519 /* policy for NAN function attributes */ 520 static const struct nla_policy 521 nl80211_nan_func_policy[NL80211_NAN_FUNC_ATTR_MAX + 1] = { 522 [NL80211_NAN_FUNC_TYPE] = { .type = NLA_U8 }, 523 [NL80211_NAN_FUNC_SERVICE_ID] = { 524 .len = NL80211_NAN_FUNC_SERVICE_ID_LEN }, 525 [NL80211_NAN_FUNC_PUBLISH_TYPE] = { .type = NLA_U8 }, 526 [NL80211_NAN_FUNC_PUBLISH_BCAST] = { .type = NLA_FLAG }, 527 [NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE] = { .type = NLA_FLAG }, 528 [NL80211_NAN_FUNC_FOLLOW_UP_ID] = { .type = NLA_U8 }, 529 [NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID] = { .type = NLA_U8 }, 530 [NL80211_NAN_FUNC_FOLLOW_UP_DEST] = { .len = ETH_ALEN }, 531 [NL80211_NAN_FUNC_CLOSE_RANGE] = { .type = NLA_FLAG }, 532 [NL80211_NAN_FUNC_TTL] = { .type = NLA_U32 }, 533 [NL80211_NAN_FUNC_SERVICE_INFO] = { .type = NLA_BINARY, 534 .len = NL80211_NAN_FUNC_SERVICE_SPEC_INFO_MAX_LEN }, 535 [NL80211_NAN_FUNC_SRF] = { .type = NLA_NESTED }, 536 [NL80211_NAN_FUNC_RX_MATCH_FILTER] = { .type = NLA_NESTED }, 537 [NL80211_NAN_FUNC_TX_MATCH_FILTER] = { .type = NLA_NESTED }, 538 [NL80211_NAN_FUNC_INSTANCE_ID] = { .type = NLA_U8 }, 539 [NL80211_NAN_FUNC_TERM_REASON] = { .type = NLA_U8 }, 540 }; 541 542 /* policy for Service Response Filter attributes */ 543 static const struct nla_policy 544 nl80211_nan_srf_policy[NL80211_NAN_SRF_ATTR_MAX + 1] = { 545 [NL80211_NAN_SRF_INCLUDE] = { .type = NLA_FLAG }, 546 [NL80211_NAN_SRF_BF] = { .type = NLA_BINARY, 547 .len = NL80211_NAN_FUNC_SRF_MAX_LEN }, 548 [NL80211_NAN_SRF_BF_IDX] = { .type = NLA_U8 }, 549 [NL80211_NAN_SRF_MAC_ADDRS] = { .type = NLA_NESTED }, 550 }; 551 552 /* policy for packet pattern attributes */ 553 static const struct nla_policy 554 nl80211_packet_pattern_policy[MAX_NL80211_PKTPAT + 1] = { 555 [NL80211_PKTPAT_MASK] = { .type = NLA_BINARY, }, 556 [NL80211_PKTPAT_PATTERN] = { .type = NLA_BINARY, }, 557 [NL80211_PKTPAT_OFFSET] = { .type = NLA_U32 }, 558 }; 559 560 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 561 struct netlink_callback *cb, 562 struct cfg80211_registered_device **rdev, 563 struct wireless_dev **wdev) 564 { 565 int err; 566 567 if (!cb->args[0]) { 568 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 569 genl_family_attrbuf(&nl80211_fam), 570 nl80211_fam.maxattr, nl80211_policy, NULL); 571 if (err) 572 return err; 573 574 *wdev = __cfg80211_wdev_from_attrs( 575 sock_net(skb->sk), 576 genl_family_attrbuf(&nl80211_fam)); 577 if (IS_ERR(*wdev)) 578 return PTR_ERR(*wdev); 579 *rdev = wiphy_to_rdev((*wdev)->wiphy); 580 /* 0 is the first index - add 1 to parse only once */ 581 cb->args[0] = (*rdev)->wiphy_idx + 1; 582 cb->args[1] = (*wdev)->identifier; 583 } else { 584 /* subtract the 1 again here */ 585 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 586 struct wireless_dev *tmp; 587 588 if (!wiphy) 589 return -ENODEV; 590 *rdev = wiphy_to_rdev(wiphy); 591 *wdev = NULL; 592 593 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 594 if (tmp->identifier == cb->args[1]) { 595 *wdev = tmp; 596 break; 597 } 598 } 599 600 if (!*wdev) 601 return -ENODEV; 602 } 603 604 return 0; 605 } 606 607 /* IE validation */ 608 static bool is_valid_ie_attr(const struct nlattr *attr) 609 { 610 const u8 *pos; 611 int len; 612 613 if (!attr) 614 return true; 615 616 pos = nla_data(attr); 617 len = nla_len(attr); 618 619 while (len) { 620 u8 elemlen; 621 622 if (len < 2) 623 return false; 624 len -= 2; 625 626 elemlen = pos[1]; 627 if (elemlen > len) 628 return false; 629 630 len -= elemlen; 631 pos += 2 + elemlen; 632 } 633 634 return true; 635 } 636 637 /* message building helper */ 638 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 639 int flags, u8 cmd) 640 { 641 /* since there is no private header just add the generic one */ 642 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 643 } 644 645 static int nl80211_msg_put_channel(struct sk_buff *msg, 646 struct ieee80211_channel *chan, 647 bool large) 648 { 649 /* Some channels must be completely excluded from the 650 * list to protect old user-space tools from breaking 651 */ 652 if (!large && chan->flags & 653 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 654 return 0; 655 656 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 657 chan->center_freq)) 658 goto nla_put_failure; 659 660 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 661 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 662 goto nla_put_failure; 663 if (chan->flags & IEEE80211_CHAN_NO_IR) { 664 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 665 goto nla_put_failure; 666 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 667 goto nla_put_failure; 668 } 669 if (chan->flags & IEEE80211_CHAN_RADAR) { 670 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 671 goto nla_put_failure; 672 if (large) { 673 u32 time; 674 675 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 676 677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 678 chan->dfs_state)) 679 goto nla_put_failure; 680 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 681 time)) 682 goto nla_put_failure; 683 if (nla_put_u32(msg, 684 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 685 chan->dfs_cac_ms)) 686 goto nla_put_failure; 687 } 688 } 689 690 if (large) { 691 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 692 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 693 goto nla_put_failure; 694 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 695 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 696 goto nla_put_failure; 697 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 698 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 699 goto nla_put_failure; 700 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 701 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 702 goto nla_put_failure; 703 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 704 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 705 goto nla_put_failure; 706 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 707 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 708 goto nla_put_failure; 709 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 710 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 711 goto nla_put_failure; 712 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 713 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 714 goto nla_put_failure; 715 } 716 717 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 718 DBM_TO_MBM(chan->max_power))) 719 goto nla_put_failure; 720 721 return 0; 722 723 nla_put_failure: 724 return -ENOBUFS; 725 } 726 727 /* netlink command implementations */ 728 729 struct key_parse { 730 struct key_params p; 731 int idx; 732 int type; 733 bool def, defmgmt; 734 bool def_uni, def_multi; 735 }; 736 737 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 738 { 739 struct nlattr *tb[NL80211_KEY_MAX + 1]; 740 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 741 nl80211_key_policy, NULL); 742 if (err) 743 return err; 744 745 k->def = !!tb[NL80211_KEY_DEFAULT]; 746 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 747 748 if (k->def) { 749 k->def_uni = true; 750 k->def_multi = true; 751 } 752 if (k->defmgmt) 753 k->def_multi = true; 754 755 if (tb[NL80211_KEY_IDX]) 756 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 757 758 if (tb[NL80211_KEY_DATA]) { 759 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 760 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 761 } 762 763 if (tb[NL80211_KEY_SEQ]) { 764 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 765 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 766 } 767 768 if (tb[NL80211_KEY_CIPHER]) 769 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 770 771 if (tb[NL80211_KEY_TYPE]) { 772 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 773 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 774 return -EINVAL; 775 } 776 777 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 778 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 779 780 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 781 tb[NL80211_KEY_DEFAULT_TYPES], 782 nl80211_key_default_policy, NULL); 783 if (err) 784 return err; 785 786 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 787 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 788 } 789 790 return 0; 791 } 792 793 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 794 { 795 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 796 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 797 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 798 } 799 800 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 801 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 802 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 803 } 804 805 if (info->attrs[NL80211_ATTR_KEY_IDX]) 806 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 807 808 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 809 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 810 811 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 812 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 813 814 if (k->def) { 815 k->def_uni = true; 816 k->def_multi = true; 817 } 818 if (k->defmgmt) 819 k->def_multi = true; 820 821 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 822 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 823 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 824 return -EINVAL; 825 } 826 827 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 828 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 829 int err = nla_parse_nested(kdt, 830 NUM_NL80211_KEY_DEFAULT_TYPES - 1, 831 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 832 nl80211_key_default_policy, 833 info->extack); 834 if (err) 835 return err; 836 837 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 838 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 839 } 840 841 return 0; 842 } 843 844 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 845 { 846 int err; 847 848 memset(k, 0, sizeof(*k)); 849 k->idx = -1; 850 k->type = -1; 851 852 if (info->attrs[NL80211_ATTR_KEY]) 853 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 854 else 855 err = nl80211_parse_key_old(info, k); 856 857 if (err) 858 return err; 859 860 if (k->def && k->defmgmt) 861 return -EINVAL; 862 863 if (k->defmgmt) { 864 if (k->def_uni || !k->def_multi) 865 return -EINVAL; 866 } 867 868 if (k->idx != -1) { 869 if (k->defmgmt) { 870 if (k->idx < 4 || k->idx > 5) 871 return -EINVAL; 872 } else if (k->def) { 873 if (k->idx < 0 || k->idx > 3) 874 return -EINVAL; 875 } else { 876 if (k->idx < 0 || k->idx > 5) 877 return -EINVAL; 878 } 879 } 880 881 return 0; 882 } 883 884 static struct cfg80211_cached_keys * 885 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 886 struct nlattr *keys, bool *no_ht) 887 { 888 struct key_parse parse; 889 struct nlattr *key; 890 struct cfg80211_cached_keys *result; 891 int rem, err, def = 0; 892 bool have_key = false; 893 894 nla_for_each_nested(key, keys, rem) { 895 have_key = true; 896 break; 897 } 898 899 if (!have_key) 900 return NULL; 901 902 result = kzalloc(sizeof(*result), GFP_KERNEL); 903 if (!result) 904 return ERR_PTR(-ENOMEM); 905 906 result->def = -1; 907 908 nla_for_each_nested(key, keys, rem) { 909 memset(&parse, 0, sizeof(parse)); 910 parse.idx = -1; 911 912 err = nl80211_parse_key_new(key, &parse); 913 if (err) 914 goto error; 915 err = -EINVAL; 916 if (!parse.p.key) 917 goto error; 918 if (parse.idx < 0 || parse.idx > 3) 919 goto error; 920 if (parse.def) { 921 if (def) 922 goto error; 923 def = 1; 924 result->def = parse.idx; 925 if (!parse.def_uni || !parse.def_multi) 926 goto error; 927 } else if (parse.defmgmt) 928 goto error; 929 err = cfg80211_validate_key_settings(rdev, &parse.p, 930 parse.idx, false, NULL); 931 if (err) 932 goto error; 933 if (parse.p.cipher != WLAN_CIPHER_SUITE_WEP40 && 934 parse.p.cipher != WLAN_CIPHER_SUITE_WEP104) { 935 err = -EINVAL; 936 goto error; 937 } 938 result->params[parse.idx].cipher = parse.p.cipher; 939 result->params[parse.idx].key_len = parse.p.key_len; 940 result->params[parse.idx].key = result->data[parse.idx]; 941 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 942 943 /* must be WEP key if we got here */ 944 if (no_ht) 945 *no_ht = true; 946 } 947 948 if (result->def < 0) { 949 err = -EINVAL; 950 goto error; 951 } 952 953 return result; 954 error: 955 kfree(result); 956 return ERR_PTR(err); 957 } 958 959 static int nl80211_key_allowed(struct wireless_dev *wdev) 960 { 961 ASSERT_WDEV_LOCK(wdev); 962 963 switch (wdev->iftype) { 964 case NL80211_IFTYPE_AP: 965 case NL80211_IFTYPE_AP_VLAN: 966 case NL80211_IFTYPE_P2P_GO: 967 case NL80211_IFTYPE_MESH_POINT: 968 break; 969 case NL80211_IFTYPE_ADHOC: 970 case NL80211_IFTYPE_STATION: 971 case NL80211_IFTYPE_P2P_CLIENT: 972 if (!wdev->current_bss) 973 return -ENOLINK; 974 break; 975 case NL80211_IFTYPE_UNSPECIFIED: 976 case NL80211_IFTYPE_OCB: 977 case NL80211_IFTYPE_MONITOR: 978 case NL80211_IFTYPE_NAN: 979 case NL80211_IFTYPE_P2P_DEVICE: 980 case NL80211_IFTYPE_WDS: 981 case NUM_NL80211_IFTYPES: 982 return -EINVAL; 983 } 984 985 return 0; 986 } 987 988 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 989 struct nlattr *tb) 990 { 991 struct ieee80211_channel *chan; 992 993 if (tb == NULL) 994 return NULL; 995 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 996 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 997 return NULL; 998 return chan; 999 } 1000 1001 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 1002 { 1003 struct nlattr *nl_modes = nla_nest_start(msg, attr); 1004 int i; 1005 1006 if (!nl_modes) 1007 goto nla_put_failure; 1008 1009 i = 0; 1010 while (ifmodes) { 1011 if ((ifmodes & 1) && nla_put_flag(msg, i)) 1012 goto nla_put_failure; 1013 ifmodes >>= 1; 1014 i++; 1015 } 1016 1017 nla_nest_end(msg, nl_modes); 1018 return 0; 1019 1020 nla_put_failure: 1021 return -ENOBUFS; 1022 } 1023 1024 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 1025 struct sk_buff *msg, 1026 bool large) 1027 { 1028 struct nlattr *nl_combis; 1029 int i, j; 1030 1031 nl_combis = nla_nest_start(msg, 1032 NL80211_ATTR_INTERFACE_COMBINATIONS); 1033 if (!nl_combis) 1034 goto nla_put_failure; 1035 1036 for (i = 0; i < wiphy->n_iface_combinations; i++) { 1037 const struct ieee80211_iface_combination *c; 1038 struct nlattr *nl_combi, *nl_limits; 1039 1040 c = &wiphy->iface_combinations[i]; 1041 1042 nl_combi = nla_nest_start(msg, i + 1); 1043 if (!nl_combi) 1044 goto nla_put_failure; 1045 1046 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 1047 if (!nl_limits) 1048 goto nla_put_failure; 1049 1050 for (j = 0; j < c->n_limits; j++) { 1051 struct nlattr *nl_limit; 1052 1053 nl_limit = nla_nest_start(msg, j + 1); 1054 if (!nl_limit) 1055 goto nla_put_failure; 1056 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 1057 c->limits[j].max)) 1058 goto nla_put_failure; 1059 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1060 c->limits[j].types)) 1061 goto nla_put_failure; 1062 nla_nest_end(msg, nl_limit); 1063 } 1064 1065 nla_nest_end(msg, nl_limits); 1066 1067 if (c->beacon_int_infra_match && 1068 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1069 goto nla_put_failure; 1070 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1071 c->num_different_channels) || 1072 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1073 c->max_interfaces)) 1074 goto nla_put_failure; 1075 if (large && 1076 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1077 c->radar_detect_widths) || 1078 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1079 c->radar_detect_regions))) 1080 goto nla_put_failure; 1081 if (c->beacon_int_min_gcd && 1082 nla_put_u32(msg, NL80211_IFACE_COMB_BI_MIN_GCD, 1083 c->beacon_int_min_gcd)) 1084 goto nla_put_failure; 1085 1086 nla_nest_end(msg, nl_combi); 1087 } 1088 1089 nla_nest_end(msg, nl_combis); 1090 1091 return 0; 1092 nla_put_failure: 1093 return -ENOBUFS; 1094 } 1095 1096 #ifdef CONFIG_PM 1097 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1098 struct sk_buff *msg) 1099 { 1100 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1101 struct nlattr *nl_tcp; 1102 1103 if (!tcp) 1104 return 0; 1105 1106 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1107 if (!nl_tcp) 1108 return -ENOBUFS; 1109 1110 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1111 tcp->data_payload_max)) 1112 return -ENOBUFS; 1113 1114 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1115 tcp->data_payload_max)) 1116 return -ENOBUFS; 1117 1118 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1119 return -ENOBUFS; 1120 1121 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1122 sizeof(*tcp->tok), tcp->tok)) 1123 return -ENOBUFS; 1124 1125 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1126 tcp->data_interval_max)) 1127 return -ENOBUFS; 1128 1129 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1130 tcp->wake_payload_max)) 1131 return -ENOBUFS; 1132 1133 nla_nest_end(msg, nl_tcp); 1134 return 0; 1135 } 1136 1137 static int nl80211_send_wowlan(struct sk_buff *msg, 1138 struct cfg80211_registered_device *rdev, 1139 bool large) 1140 { 1141 struct nlattr *nl_wowlan; 1142 1143 if (!rdev->wiphy.wowlan) 1144 return 0; 1145 1146 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1147 if (!nl_wowlan) 1148 return -ENOBUFS; 1149 1150 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1152 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1154 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1156 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1157 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1158 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1159 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1160 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1161 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1162 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1163 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1164 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1165 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1166 return -ENOBUFS; 1167 1168 if (rdev->wiphy.wowlan->n_patterns) { 1169 struct nl80211_pattern_support pat = { 1170 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1171 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1172 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1173 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1174 }; 1175 1176 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1177 sizeof(pat), &pat)) 1178 return -ENOBUFS; 1179 } 1180 1181 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1182 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1183 rdev->wiphy.wowlan->max_nd_match_sets)) 1184 return -ENOBUFS; 1185 1186 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1187 return -ENOBUFS; 1188 1189 nla_nest_end(msg, nl_wowlan); 1190 1191 return 0; 1192 } 1193 #endif 1194 1195 static int nl80211_send_coalesce(struct sk_buff *msg, 1196 struct cfg80211_registered_device *rdev) 1197 { 1198 struct nl80211_coalesce_rule_support rule; 1199 1200 if (!rdev->wiphy.coalesce) 1201 return 0; 1202 1203 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1204 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1205 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1206 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1207 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1208 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1209 1210 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1211 return -ENOBUFS; 1212 1213 return 0; 1214 } 1215 1216 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1217 struct ieee80211_supported_band *sband) 1218 { 1219 struct nlattr *nl_rates, *nl_rate; 1220 struct ieee80211_rate *rate; 1221 int i; 1222 1223 /* add HT info */ 1224 if (sband->ht_cap.ht_supported && 1225 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1226 sizeof(sband->ht_cap.mcs), 1227 &sband->ht_cap.mcs) || 1228 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1229 sband->ht_cap.cap) || 1230 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1231 sband->ht_cap.ampdu_factor) || 1232 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1233 sband->ht_cap.ampdu_density))) 1234 return -ENOBUFS; 1235 1236 /* add VHT info */ 1237 if (sband->vht_cap.vht_supported && 1238 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1239 sizeof(sband->vht_cap.vht_mcs), 1240 &sband->vht_cap.vht_mcs) || 1241 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1242 sband->vht_cap.cap))) 1243 return -ENOBUFS; 1244 1245 /* add bitrates */ 1246 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1247 if (!nl_rates) 1248 return -ENOBUFS; 1249 1250 for (i = 0; i < sband->n_bitrates; i++) { 1251 nl_rate = nla_nest_start(msg, i); 1252 if (!nl_rate) 1253 return -ENOBUFS; 1254 1255 rate = &sband->bitrates[i]; 1256 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1257 rate->bitrate)) 1258 return -ENOBUFS; 1259 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1260 nla_put_flag(msg, 1261 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1262 return -ENOBUFS; 1263 1264 nla_nest_end(msg, nl_rate); 1265 } 1266 1267 nla_nest_end(msg, nl_rates); 1268 1269 return 0; 1270 } 1271 1272 static int 1273 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1274 const struct ieee80211_txrx_stypes *mgmt_stypes) 1275 { 1276 u16 stypes; 1277 struct nlattr *nl_ftypes, *nl_ifs; 1278 enum nl80211_iftype ift; 1279 int i; 1280 1281 if (!mgmt_stypes) 1282 return 0; 1283 1284 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1285 if (!nl_ifs) 1286 return -ENOBUFS; 1287 1288 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1289 nl_ftypes = nla_nest_start(msg, ift); 1290 if (!nl_ftypes) 1291 return -ENOBUFS; 1292 i = 0; 1293 stypes = mgmt_stypes[ift].tx; 1294 while (stypes) { 1295 if ((stypes & 1) && 1296 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1297 (i << 4) | IEEE80211_FTYPE_MGMT)) 1298 return -ENOBUFS; 1299 stypes >>= 1; 1300 i++; 1301 } 1302 nla_nest_end(msg, nl_ftypes); 1303 } 1304 1305 nla_nest_end(msg, nl_ifs); 1306 1307 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1308 if (!nl_ifs) 1309 return -ENOBUFS; 1310 1311 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1312 nl_ftypes = nla_nest_start(msg, ift); 1313 if (!nl_ftypes) 1314 return -ENOBUFS; 1315 i = 0; 1316 stypes = mgmt_stypes[ift].rx; 1317 while (stypes) { 1318 if ((stypes & 1) && 1319 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1320 (i << 4) | IEEE80211_FTYPE_MGMT)) 1321 return -ENOBUFS; 1322 stypes >>= 1; 1323 i++; 1324 } 1325 nla_nest_end(msg, nl_ftypes); 1326 } 1327 nla_nest_end(msg, nl_ifs); 1328 1329 return 0; 1330 } 1331 1332 #define CMD(op, n) \ 1333 do { \ 1334 if (rdev->ops->op) { \ 1335 i++; \ 1336 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1337 goto nla_put_failure; \ 1338 } \ 1339 } while (0) 1340 1341 static int nl80211_add_commands_unsplit(struct cfg80211_registered_device *rdev, 1342 struct sk_buff *msg) 1343 { 1344 int i = 0; 1345 1346 /* 1347 * do *NOT* add anything into this function, new things need to be 1348 * advertised only to new versions of userspace that can deal with 1349 * the split (and they can't possibly care about new features... 1350 */ 1351 CMD(add_virtual_intf, NEW_INTERFACE); 1352 CMD(change_virtual_intf, SET_INTERFACE); 1353 CMD(add_key, NEW_KEY); 1354 CMD(start_ap, START_AP); 1355 CMD(add_station, NEW_STATION); 1356 CMD(add_mpath, NEW_MPATH); 1357 CMD(update_mesh_config, SET_MESH_CONFIG); 1358 CMD(change_bss, SET_BSS); 1359 CMD(auth, AUTHENTICATE); 1360 CMD(assoc, ASSOCIATE); 1361 CMD(deauth, DEAUTHENTICATE); 1362 CMD(disassoc, DISASSOCIATE); 1363 CMD(join_ibss, JOIN_IBSS); 1364 CMD(join_mesh, JOIN_MESH); 1365 CMD(set_pmksa, SET_PMKSA); 1366 CMD(del_pmksa, DEL_PMKSA); 1367 CMD(flush_pmksa, FLUSH_PMKSA); 1368 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1369 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1370 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1371 CMD(mgmt_tx, FRAME); 1372 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1373 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1374 i++; 1375 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1376 goto nla_put_failure; 1377 } 1378 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1379 rdev->ops->join_mesh) { 1380 i++; 1381 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1382 goto nla_put_failure; 1383 } 1384 CMD(set_wds_peer, SET_WDS_PEER); 1385 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1386 CMD(tdls_mgmt, TDLS_MGMT); 1387 CMD(tdls_oper, TDLS_OPER); 1388 } 1389 if (rdev->wiphy.max_sched_scan_reqs) 1390 CMD(sched_scan_start, START_SCHED_SCAN); 1391 CMD(probe_client, PROBE_CLIENT); 1392 CMD(set_noack_map, SET_NOACK_MAP); 1393 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1394 i++; 1395 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1396 goto nla_put_failure; 1397 } 1398 CMD(start_p2p_device, START_P2P_DEVICE); 1399 CMD(set_mcast_rate, SET_MCAST_RATE); 1400 #ifdef CONFIG_NL80211_TESTMODE 1401 CMD(testmode_cmd, TESTMODE); 1402 #endif 1403 1404 if (rdev->ops->connect || rdev->ops->auth) { 1405 i++; 1406 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1407 goto nla_put_failure; 1408 } 1409 1410 if (rdev->ops->disconnect || rdev->ops->deauth) { 1411 i++; 1412 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1413 goto nla_put_failure; 1414 } 1415 1416 return i; 1417 nla_put_failure: 1418 return -ENOBUFS; 1419 } 1420 1421 struct nl80211_dump_wiphy_state { 1422 s64 filter_wiphy; 1423 long start; 1424 long split_start, band_start, chan_start, capa_start; 1425 bool split; 1426 }; 1427 1428 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1429 enum nl80211_commands cmd, 1430 struct sk_buff *msg, u32 portid, u32 seq, 1431 int flags, struct nl80211_dump_wiphy_state *state) 1432 { 1433 void *hdr; 1434 struct nlattr *nl_bands, *nl_band; 1435 struct nlattr *nl_freqs, *nl_freq; 1436 struct nlattr *nl_cmds; 1437 enum nl80211_band band; 1438 struct ieee80211_channel *chan; 1439 int i; 1440 const struct ieee80211_txrx_stypes *mgmt_stypes = 1441 rdev->wiphy.mgmt_stypes; 1442 u32 features; 1443 1444 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1445 if (!hdr) 1446 return -ENOBUFS; 1447 1448 if (WARN_ON(!state)) 1449 return -EINVAL; 1450 1451 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1452 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1453 wiphy_name(&rdev->wiphy)) || 1454 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1455 cfg80211_rdev_list_generation)) 1456 goto nla_put_failure; 1457 1458 if (cmd != NL80211_CMD_NEW_WIPHY) 1459 goto finish; 1460 1461 switch (state->split_start) { 1462 case 0: 1463 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1464 rdev->wiphy.retry_short) || 1465 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1466 rdev->wiphy.retry_long) || 1467 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1468 rdev->wiphy.frag_threshold) || 1469 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1470 rdev->wiphy.rts_threshold) || 1471 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1472 rdev->wiphy.coverage_class) || 1473 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1474 rdev->wiphy.max_scan_ssids) || 1475 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1476 rdev->wiphy.max_sched_scan_ssids) || 1477 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1478 rdev->wiphy.max_scan_ie_len) || 1479 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1480 rdev->wiphy.max_sched_scan_ie_len) || 1481 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1482 rdev->wiphy.max_match_sets) || 1483 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1484 rdev->wiphy.max_sched_scan_plans) || 1485 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1486 rdev->wiphy.max_sched_scan_plan_interval) || 1487 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1488 rdev->wiphy.max_sched_scan_plan_iterations)) 1489 goto nla_put_failure; 1490 1491 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1492 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1493 goto nla_put_failure; 1494 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1495 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1496 goto nla_put_failure; 1497 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1498 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1499 goto nla_put_failure; 1500 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1501 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1502 goto nla_put_failure; 1503 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1504 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1505 goto nla_put_failure; 1506 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1507 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1508 goto nla_put_failure; 1509 state->split_start++; 1510 if (state->split) 1511 break; 1512 case 1: 1513 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1514 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1515 rdev->wiphy.cipher_suites)) 1516 goto nla_put_failure; 1517 1518 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1519 rdev->wiphy.max_num_pmkids)) 1520 goto nla_put_failure; 1521 1522 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1523 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1524 goto nla_put_failure; 1525 1526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1527 rdev->wiphy.available_antennas_tx) || 1528 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1529 rdev->wiphy.available_antennas_rx)) 1530 goto nla_put_failure; 1531 1532 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1533 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1534 rdev->wiphy.probe_resp_offload)) 1535 goto nla_put_failure; 1536 1537 if ((rdev->wiphy.available_antennas_tx || 1538 rdev->wiphy.available_antennas_rx) && 1539 rdev->ops->get_antenna) { 1540 u32 tx_ant = 0, rx_ant = 0; 1541 int res; 1542 1543 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1544 if (!res) { 1545 if (nla_put_u32(msg, 1546 NL80211_ATTR_WIPHY_ANTENNA_TX, 1547 tx_ant) || 1548 nla_put_u32(msg, 1549 NL80211_ATTR_WIPHY_ANTENNA_RX, 1550 rx_ant)) 1551 goto nla_put_failure; 1552 } 1553 } 1554 1555 state->split_start++; 1556 if (state->split) 1557 break; 1558 case 2: 1559 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1560 rdev->wiphy.interface_modes)) 1561 goto nla_put_failure; 1562 state->split_start++; 1563 if (state->split) 1564 break; 1565 case 3: 1566 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1567 if (!nl_bands) 1568 goto nla_put_failure; 1569 1570 for (band = state->band_start; 1571 band < NUM_NL80211_BANDS; band++) { 1572 struct ieee80211_supported_band *sband; 1573 1574 sband = rdev->wiphy.bands[band]; 1575 1576 if (!sband) 1577 continue; 1578 1579 nl_band = nla_nest_start(msg, band); 1580 if (!nl_band) 1581 goto nla_put_failure; 1582 1583 switch (state->chan_start) { 1584 case 0: 1585 if (nl80211_send_band_rateinfo(msg, sband)) 1586 goto nla_put_failure; 1587 state->chan_start++; 1588 if (state->split) 1589 break; 1590 default: 1591 /* add frequencies */ 1592 nl_freqs = nla_nest_start( 1593 msg, NL80211_BAND_ATTR_FREQS); 1594 if (!nl_freqs) 1595 goto nla_put_failure; 1596 1597 for (i = state->chan_start - 1; 1598 i < sband->n_channels; 1599 i++) { 1600 nl_freq = nla_nest_start(msg, i); 1601 if (!nl_freq) 1602 goto nla_put_failure; 1603 1604 chan = &sband->channels[i]; 1605 1606 if (nl80211_msg_put_channel( 1607 msg, chan, 1608 state->split)) 1609 goto nla_put_failure; 1610 1611 nla_nest_end(msg, nl_freq); 1612 if (state->split) 1613 break; 1614 } 1615 if (i < sband->n_channels) 1616 state->chan_start = i + 2; 1617 else 1618 state->chan_start = 0; 1619 nla_nest_end(msg, nl_freqs); 1620 } 1621 1622 nla_nest_end(msg, nl_band); 1623 1624 if (state->split) { 1625 /* start again here */ 1626 if (state->chan_start) 1627 band--; 1628 break; 1629 } 1630 } 1631 nla_nest_end(msg, nl_bands); 1632 1633 if (band < NUM_NL80211_BANDS) 1634 state->band_start = band + 1; 1635 else 1636 state->band_start = 0; 1637 1638 /* if bands & channels are done, continue outside */ 1639 if (state->band_start == 0 && state->chan_start == 0) 1640 state->split_start++; 1641 if (state->split) 1642 break; 1643 case 4: 1644 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1645 if (!nl_cmds) 1646 goto nla_put_failure; 1647 1648 i = nl80211_add_commands_unsplit(rdev, msg); 1649 if (i < 0) 1650 goto nla_put_failure; 1651 if (state->split) { 1652 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1653 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1654 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1655 CMD(channel_switch, CHANNEL_SWITCH); 1656 CMD(set_qos_map, SET_QOS_MAP); 1657 if (rdev->wiphy.features & 1658 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1659 CMD(add_tx_ts, ADD_TX_TS); 1660 CMD(set_multicast_to_unicast, SET_MULTICAST_TO_UNICAST); 1661 CMD(update_connect_params, UPDATE_CONNECT_PARAMS); 1662 } 1663 #undef CMD 1664 1665 nla_nest_end(msg, nl_cmds); 1666 state->split_start++; 1667 if (state->split) 1668 break; 1669 case 5: 1670 if (rdev->ops->remain_on_channel && 1671 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1672 nla_put_u32(msg, 1673 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1674 rdev->wiphy.max_remain_on_channel_duration)) 1675 goto nla_put_failure; 1676 1677 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1678 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1679 goto nla_put_failure; 1680 1681 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1682 goto nla_put_failure; 1683 state->split_start++; 1684 if (state->split) 1685 break; 1686 case 6: 1687 #ifdef CONFIG_PM 1688 if (nl80211_send_wowlan(msg, rdev, state->split)) 1689 goto nla_put_failure; 1690 state->split_start++; 1691 if (state->split) 1692 break; 1693 #else 1694 state->split_start++; 1695 #endif 1696 case 7: 1697 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1698 rdev->wiphy.software_iftypes)) 1699 goto nla_put_failure; 1700 1701 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1702 state->split)) 1703 goto nla_put_failure; 1704 1705 state->split_start++; 1706 if (state->split) 1707 break; 1708 case 8: 1709 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1710 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1711 rdev->wiphy.ap_sme_capa)) 1712 goto nla_put_failure; 1713 1714 features = rdev->wiphy.features; 1715 /* 1716 * We can only add the per-channel limit information if the 1717 * dump is split, otherwise it makes it too big. Therefore 1718 * only advertise it in that case. 1719 */ 1720 if (state->split) 1721 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1722 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1723 goto nla_put_failure; 1724 1725 if (rdev->wiphy.ht_capa_mod_mask && 1726 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1727 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1728 rdev->wiphy.ht_capa_mod_mask)) 1729 goto nla_put_failure; 1730 1731 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1732 rdev->wiphy.max_acl_mac_addrs && 1733 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1734 rdev->wiphy.max_acl_mac_addrs)) 1735 goto nla_put_failure; 1736 1737 /* 1738 * Any information below this point is only available to 1739 * applications that can deal with it being split. This 1740 * helps ensure that newly added capabilities don't break 1741 * older tools by overrunning their buffers. 1742 * 1743 * We still increment split_start so that in the split 1744 * case we'll continue with more data in the next round, 1745 * but break unconditionally so unsplit data stops here. 1746 */ 1747 state->split_start++; 1748 break; 1749 case 9: 1750 if (rdev->wiphy.extended_capabilities && 1751 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1752 rdev->wiphy.extended_capabilities_len, 1753 rdev->wiphy.extended_capabilities) || 1754 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1755 rdev->wiphy.extended_capabilities_len, 1756 rdev->wiphy.extended_capabilities_mask))) 1757 goto nla_put_failure; 1758 1759 if (rdev->wiphy.vht_capa_mod_mask && 1760 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1761 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1762 rdev->wiphy.vht_capa_mod_mask)) 1763 goto nla_put_failure; 1764 1765 state->split_start++; 1766 break; 1767 case 10: 1768 if (nl80211_send_coalesce(msg, rdev)) 1769 goto nla_put_failure; 1770 1771 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1772 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1773 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1774 goto nla_put_failure; 1775 1776 if (rdev->wiphy.max_ap_assoc_sta && 1777 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1778 rdev->wiphy.max_ap_assoc_sta)) 1779 goto nla_put_failure; 1780 1781 state->split_start++; 1782 break; 1783 case 11: 1784 if (rdev->wiphy.n_vendor_commands) { 1785 const struct nl80211_vendor_cmd_info *info; 1786 struct nlattr *nested; 1787 1788 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1789 if (!nested) 1790 goto nla_put_failure; 1791 1792 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1793 info = &rdev->wiphy.vendor_commands[i].info; 1794 if (nla_put(msg, i + 1, sizeof(*info), info)) 1795 goto nla_put_failure; 1796 } 1797 nla_nest_end(msg, nested); 1798 } 1799 1800 if (rdev->wiphy.n_vendor_events) { 1801 const struct nl80211_vendor_cmd_info *info; 1802 struct nlattr *nested; 1803 1804 nested = nla_nest_start(msg, 1805 NL80211_ATTR_VENDOR_EVENTS); 1806 if (!nested) 1807 goto nla_put_failure; 1808 1809 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1810 info = &rdev->wiphy.vendor_events[i]; 1811 if (nla_put(msg, i + 1, sizeof(*info), info)) 1812 goto nla_put_failure; 1813 } 1814 nla_nest_end(msg, nested); 1815 } 1816 state->split_start++; 1817 break; 1818 case 12: 1819 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1820 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1821 rdev->wiphy.max_num_csa_counters)) 1822 goto nla_put_failure; 1823 1824 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1825 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1826 goto nla_put_failure; 1827 1828 if (rdev->wiphy.max_sched_scan_reqs && 1829 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_MAX_REQS, 1830 rdev->wiphy.max_sched_scan_reqs)) 1831 goto nla_put_failure; 1832 1833 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1834 sizeof(rdev->wiphy.ext_features), 1835 rdev->wiphy.ext_features)) 1836 goto nla_put_failure; 1837 1838 if (rdev->wiphy.bss_select_support) { 1839 struct nlattr *nested; 1840 u32 bss_select_support = rdev->wiphy.bss_select_support; 1841 1842 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT); 1843 if (!nested) 1844 goto nla_put_failure; 1845 1846 i = 0; 1847 while (bss_select_support) { 1848 if ((bss_select_support & 1) && 1849 nla_put_flag(msg, i)) 1850 goto nla_put_failure; 1851 i++; 1852 bss_select_support >>= 1; 1853 } 1854 nla_nest_end(msg, nested); 1855 } 1856 1857 state->split_start++; 1858 break; 1859 case 13: 1860 if (rdev->wiphy.num_iftype_ext_capab && 1861 rdev->wiphy.iftype_ext_capab) { 1862 struct nlattr *nested_ext_capab, *nested; 1863 1864 nested = nla_nest_start(msg, 1865 NL80211_ATTR_IFTYPE_EXT_CAPA); 1866 if (!nested) 1867 goto nla_put_failure; 1868 1869 for (i = state->capa_start; 1870 i < rdev->wiphy.num_iftype_ext_capab; i++) { 1871 const struct wiphy_iftype_ext_capab *capab; 1872 1873 capab = &rdev->wiphy.iftype_ext_capab[i]; 1874 1875 nested_ext_capab = nla_nest_start(msg, i); 1876 if (!nested_ext_capab || 1877 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 1878 capab->iftype) || 1879 nla_put(msg, NL80211_ATTR_EXT_CAPA, 1880 capab->extended_capabilities_len, 1881 capab->extended_capabilities) || 1882 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1883 capab->extended_capabilities_len, 1884 capab->extended_capabilities_mask)) 1885 goto nla_put_failure; 1886 1887 nla_nest_end(msg, nested_ext_capab); 1888 if (state->split) 1889 break; 1890 } 1891 nla_nest_end(msg, nested); 1892 if (i < rdev->wiphy.num_iftype_ext_capab) { 1893 state->capa_start = i + 1; 1894 break; 1895 } 1896 } 1897 1898 if (nla_put_u32(msg, NL80211_ATTR_BANDS, 1899 rdev->wiphy.nan_supported_bands)) 1900 goto nla_put_failure; 1901 1902 /* done */ 1903 state->split_start = 0; 1904 break; 1905 } 1906 finish: 1907 genlmsg_end(msg, hdr); 1908 return 0; 1909 1910 nla_put_failure: 1911 genlmsg_cancel(msg, hdr); 1912 return -EMSGSIZE; 1913 } 1914 1915 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1916 struct netlink_callback *cb, 1917 struct nl80211_dump_wiphy_state *state) 1918 { 1919 struct nlattr **tb = genl_family_attrbuf(&nl80211_fam); 1920 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, tb, 1921 nl80211_fam.maxattr, nl80211_policy, NULL); 1922 /* ignore parse errors for backward compatibility */ 1923 if (ret) 1924 return 0; 1925 1926 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1927 if (tb[NL80211_ATTR_WIPHY]) 1928 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1929 if (tb[NL80211_ATTR_WDEV]) 1930 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1931 if (tb[NL80211_ATTR_IFINDEX]) { 1932 struct net_device *netdev; 1933 struct cfg80211_registered_device *rdev; 1934 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1935 1936 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1937 if (!netdev) 1938 return -ENODEV; 1939 if (netdev->ieee80211_ptr) { 1940 rdev = wiphy_to_rdev( 1941 netdev->ieee80211_ptr->wiphy); 1942 state->filter_wiphy = rdev->wiphy_idx; 1943 } 1944 } 1945 1946 return 0; 1947 } 1948 1949 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1950 { 1951 int idx = 0, ret; 1952 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1953 struct cfg80211_registered_device *rdev; 1954 1955 rtnl_lock(); 1956 if (!state) { 1957 state = kzalloc(sizeof(*state), GFP_KERNEL); 1958 if (!state) { 1959 rtnl_unlock(); 1960 return -ENOMEM; 1961 } 1962 state->filter_wiphy = -1; 1963 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1964 if (ret) { 1965 kfree(state); 1966 rtnl_unlock(); 1967 return ret; 1968 } 1969 cb->args[0] = (long)state; 1970 } 1971 1972 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1973 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1974 continue; 1975 if (++idx <= state->start) 1976 continue; 1977 if (state->filter_wiphy != -1 && 1978 state->filter_wiphy != rdev->wiphy_idx) 1979 continue; 1980 /* attempt to fit multiple wiphy data chunks into the skb */ 1981 do { 1982 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1983 skb, 1984 NETLINK_CB(cb->skb).portid, 1985 cb->nlh->nlmsg_seq, 1986 NLM_F_MULTI, state); 1987 if (ret < 0) { 1988 /* 1989 * If sending the wiphy data didn't fit (ENOBUFS 1990 * or EMSGSIZE returned), this SKB is still 1991 * empty (so it's not too big because another 1992 * wiphy dataset is already in the skb) and 1993 * we've not tried to adjust the dump allocation 1994 * yet ... then adjust the alloc size to be 1995 * bigger, and return 1 but with the empty skb. 1996 * This results in an empty message being RX'ed 1997 * in userspace, but that is ignored. 1998 * 1999 * We can then retry with the larger buffer. 2000 */ 2001 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 2002 !skb->len && !state->split && 2003 cb->min_dump_alloc < 4096) { 2004 cb->min_dump_alloc = 4096; 2005 state->split_start = 0; 2006 rtnl_unlock(); 2007 return 1; 2008 } 2009 idx--; 2010 break; 2011 } 2012 } while (state->split_start > 0); 2013 break; 2014 } 2015 rtnl_unlock(); 2016 2017 state->start = idx; 2018 2019 return skb->len; 2020 } 2021 2022 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 2023 { 2024 kfree((void *)cb->args[0]); 2025 return 0; 2026 } 2027 2028 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 2029 { 2030 struct sk_buff *msg; 2031 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2032 struct nl80211_dump_wiphy_state state = {}; 2033 2034 msg = nlmsg_new(4096, GFP_KERNEL); 2035 if (!msg) 2036 return -ENOMEM; 2037 2038 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 2039 info->snd_portid, info->snd_seq, 0, 2040 &state) < 0) { 2041 nlmsg_free(msg); 2042 return -ENOBUFS; 2043 } 2044 2045 return genlmsg_reply(msg, info); 2046 } 2047 2048 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 2049 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 2050 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 2051 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 2052 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 2053 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 2054 }; 2055 2056 static int parse_txq_params(struct nlattr *tb[], 2057 struct ieee80211_txq_params *txq_params) 2058 { 2059 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 2060 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 2061 !tb[NL80211_TXQ_ATTR_AIFS]) 2062 return -EINVAL; 2063 2064 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 2065 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 2066 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 2067 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 2068 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 2069 2070 if (txq_params->ac >= NL80211_NUM_ACS) 2071 return -EINVAL; 2072 2073 return 0; 2074 } 2075 2076 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 2077 { 2078 /* 2079 * You can only set the channel explicitly for WDS interfaces, 2080 * all others have their channel managed via their respective 2081 * "establish a connection" command (connect, join, ...) 2082 * 2083 * For AP/GO and mesh mode, the channel can be set with the 2084 * channel userspace API, but is only stored and passed to the 2085 * low-level driver when the AP starts or the mesh is joined. 2086 * This is for backward compatibility, userspace can also give 2087 * the channel in the start-ap or join-mesh commands instead. 2088 * 2089 * Monitors are special as they are normally slaved to 2090 * whatever else is going on, so they have their own special 2091 * operation to set the monitor channel if possible. 2092 */ 2093 return !wdev || 2094 wdev->iftype == NL80211_IFTYPE_AP || 2095 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2096 wdev->iftype == NL80211_IFTYPE_MONITOR || 2097 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2098 } 2099 2100 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2101 struct genl_info *info, 2102 struct cfg80211_chan_def *chandef) 2103 { 2104 u32 control_freq; 2105 2106 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 2107 return -EINVAL; 2108 2109 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 2110 2111 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 2112 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2113 chandef->center_freq1 = control_freq; 2114 chandef->center_freq2 = 0; 2115 2116 /* Primary channel not allowed */ 2117 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 2118 return -EINVAL; 2119 2120 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2121 enum nl80211_channel_type chantype; 2122 2123 chantype = nla_get_u32( 2124 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2125 2126 switch (chantype) { 2127 case NL80211_CHAN_NO_HT: 2128 case NL80211_CHAN_HT20: 2129 case NL80211_CHAN_HT40PLUS: 2130 case NL80211_CHAN_HT40MINUS: 2131 cfg80211_chandef_create(chandef, chandef->chan, 2132 chantype); 2133 break; 2134 default: 2135 return -EINVAL; 2136 } 2137 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2138 chandef->width = 2139 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2140 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 2141 chandef->center_freq1 = 2142 nla_get_u32( 2143 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 2144 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 2145 chandef->center_freq2 = 2146 nla_get_u32( 2147 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 2148 } 2149 2150 if (!cfg80211_chandef_valid(chandef)) 2151 return -EINVAL; 2152 2153 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2154 IEEE80211_CHAN_DISABLED)) 2155 return -EINVAL; 2156 2157 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2158 chandef->width == NL80211_CHAN_WIDTH_10) && 2159 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 2160 return -EINVAL; 2161 2162 return 0; 2163 } 2164 2165 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 2166 struct net_device *dev, 2167 struct genl_info *info) 2168 { 2169 struct cfg80211_chan_def chandef; 2170 int result; 2171 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2172 struct wireless_dev *wdev = NULL; 2173 2174 if (dev) 2175 wdev = dev->ieee80211_ptr; 2176 if (!nl80211_can_set_dev_channel(wdev)) 2177 return -EOPNOTSUPP; 2178 if (wdev) 2179 iftype = wdev->iftype; 2180 2181 result = nl80211_parse_chandef(rdev, info, &chandef); 2182 if (result) 2183 return result; 2184 2185 switch (iftype) { 2186 case NL80211_IFTYPE_AP: 2187 case NL80211_IFTYPE_P2P_GO: 2188 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2189 iftype)) { 2190 result = -EINVAL; 2191 break; 2192 } 2193 if (wdev->beacon_interval) { 2194 if (!dev || !rdev->ops->set_ap_chanwidth || 2195 !(rdev->wiphy.features & 2196 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2197 result = -EBUSY; 2198 break; 2199 } 2200 2201 /* Only allow dynamic channel width changes */ 2202 if (chandef.chan != wdev->preset_chandef.chan) { 2203 result = -EBUSY; 2204 break; 2205 } 2206 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2207 if (result) 2208 break; 2209 } 2210 wdev->preset_chandef = chandef; 2211 result = 0; 2212 break; 2213 case NL80211_IFTYPE_MESH_POINT: 2214 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2215 break; 2216 case NL80211_IFTYPE_MONITOR: 2217 result = cfg80211_set_monitor_channel(rdev, &chandef); 2218 break; 2219 default: 2220 result = -EINVAL; 2221 } 2222 2223 return result; 2224 } 2225 2226 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2227 { 2228 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2229 struct net_device *netdev = info->user_ptr[1]; 2230 2231 return __nl80211_set_channel(rdev, netdev, info); 2232 } 2233 2234 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2235 { 2236 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2237 struct net_device *dev = info->user_ptr[1]; 2238 struct wireless_dev *wdev = dev->ieee80211_ptr; 2239 const u8 *bssid; 2240 2241 if (!info->attrs[NL80211_ATTR_MAC]) 2242 return -EINVAL; 2243 2244 if (netif_running(dev)) 2245 return -EBUSY; 2246 2247 if (!rdev->ops->set_wds_peer) 2248 return -EOPNOTSUPP; 2249 2250 if (wdev->iftype != NL80211_IFTYPE_WDS) 2251 return -EOPNOTSUPP; 2252 2253 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2254 return rdev_set_wds_peer(rdev, dev, bssid); 2255 } 2256 2257 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2258 { 2259 struct cfg80211_registered_device *rdev; 2260 struct net_device *netdev = NULL; 2261 struct wireless_dev *wdev; 2262 int result = 0, rem_txq_params = 0; 2263 struct nlattr *nl_txq_params; 2264 u32 changed; 2265 u8 retry_short = 0, retry_long = 0; 2266 u32 frag_threshold = 0, rts_threshold = 0; 2267 u8 coverage_class = 0; 2268 2269 ASSERT_RTNL(); 2270 2271 /* 2272 * Try to find the wiphy and netdev. Normally this 2273 * function shouldn't need the netdev, but this is 2274 * done for backward compatibility -- previously 2275 * setting the channel was done per wiphy, but now 2276 * it is per netdev. Previous userland like hostapd 2277 * also passed a netdev to set_wiphy, so that it is 2278 * possible to let that go to the right netdev! 2279 */ 2280 2281 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2282 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2283 2284 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2285 if (netdev && netdev->ieee80211_ptr) 2286 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2287 else 2288 netdev = NULL; 2289 } 2290 2291 if (!netdev) { 2292 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2293 info->attrs); 2294 if (IS_ERR(rdev)) 2295 return PTR_ERR(rdev); 2296 wdev = NULL; 2297 netdev = NULL; 2298 result = 0; 2299 } else 2300 wdev = netdev->ieee80211_ptr; 2301 2302 /* 2303 * end workaround code, by now the rdev is available 2304 * and locked, and wdev may or may not be NULL. 2305 */ 2306 2307 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2308 result = cfg80211_dev_rename( 2309 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2310 2311 if (result) 2312 return result; 2313 2314 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2315 struct ieee80211_txq_params txq_params; 2316 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2317 2318 if (!rdev->ops->set_txq_params) 2319 return -EOPNOTSUPP; 2320 2321 if (!netdev) 2322 return -EINVAL; 2323 2324 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2325 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2326 return -EINVAL; 2327 2328 if (!netif_running(netdev)) 2329 return -ENETDOWN; 2330 2331 nla_for_each_nested(nl_txq_params, 2332 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2333 rem_txq_params) { 2334 result = nla_parse_nested(tb, NL80211_TXQ_ATTR_MAX, 2335 nl_txq_params, 2336 txq_params_policy, 2337 info->extack); 2338 if (result) 2339 return result; 2340 result = parse_txq_params(tb, &txq_params); 2341 if (result) 2342 return result; 2343 2344 result = rdev_set_txq_params(rdev, netdev, 2345 &txq_params); 2346 if (result) 2347 return result; 2348 } 2349 } 2350 2351 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2352 result = __nl80211_set_channel( 2353 rdev, 2354 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2355 info); 2356 if (result) 2357 return result; 2358 } 2359 2360 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2361 struct wireless_dev *txp_wdev = wdev; 2362 enum nl80211_tx_power_setting type; 2363 int idx, mbm = 0; 2364 2365 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2366 txp_wdev = NULL; 2367 2368 if (!rdev->ops->set_tx_power) 2369 return -EOPNOTSUPP; 2370 2371 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2372 type = nla_get_u32(info->attrs[idx]); 2373 2374 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2375 (type != NL80211_TX_POWER_AUTOMATIC)) 2376 return -EINVAL; 2377 2378 if (type != NL80211_TX_POWER_AUTOMATIC) { 2379 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2380 mbm = nla_get_u32(info->attrs[idx]); 2381 } 2382 2383 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2384 if (result) 2385 return result; 2386 } 2387 2388 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2389 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2390 u32 tx_ant, rx_ant; 2391 2392 if ((!rdev->wiphy.available_antennas_tx && 2393 !rdev->wiphy.available_antennas_rx) || 2394 !rdev->ops->set_antenna) 2395 return -EOPNOTSUPP; 2396 2397 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2398 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2399 2400 /* reject antenna configurations which don't match the 2401 * available antenna masks, except for the "all" mask */ 2402 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2403 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2404 return -EINVAL; 2405 2406 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2407 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2408 2409 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2410 if (result) 2411 return result; 2412 } 2413 2414 changed = 0; 2415 2416 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2417 retry_short = nla_get_u8( 2418 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2419 if (retry_short == 0) 2420 return -EINVAL; 2421 2422 changed |= WIPHY_PARAM_RETRY_SHORT; 2423 } 2424 2425 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2426 retry_long = nla_get_u8( 2427 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2428 if (retry_long == 0) 2429 return -EINVAL; 2430 2431 changed |= WIPHY_PARAM_RETRY_LONG; 2432 } 2433 2434 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2435 frag_threshold = nla_get_u32( 2436 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2437 if (frag_threshold < 256) 2438 return -EINVAL; 2439 2440 if (frag_threshold != (u32) -1) { 2441 /* 2442 * Fragments (apart from the last one) are required to 2443 * have even length. Make the fragmentation code 2444 * simpler by stripping LSB should someone try to use 2445 * odd threshold value. 2446 */ 2447 frag_threshold &= ~0x1; 2448 } 2449 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2450 } 2451 2452 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2453 rts_threshold = nla_get_u32( 2454 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2455 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2456 } 2457 2458 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2459 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2460 return -EINVAL; 2461 2462 coverage_class = nla_get_u8( 2463 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2464 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2465 } 2466 2467 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2468 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2469 return -EOPNOTSUPP; 2470 2471 changed |= WIPHY_PARAM_DYN_ACK; 2472 } 2473 2474 if (changed) { 2475 u8 old_retry_short, old_retry_long; 2476 u32 old_frag_threshold, old_rts_threshold; 2477 u8 old_coverage_class; 2478 2479 if (!rdev->ops->set_wiphy_params) 2480 return -EOPNOTSUPP; 2481 2482 old_retry_short = rdev->wiphy.retry_short; 2483 old_retry_long = rdev->wiphy.retry_long; 2484 old_frag_threshold = rdev->wiphy.frag_threshold; 2485 old_rts_threshold = rdev->wiphy.rts_threshold; 2486 old_coverage_class = rdev->wiphy.coverage_class; 2487 2488 if (changed & WIPHY_PARAM_RETRY_SHORT) 2489 rdev->wiphy.retry_short = retry_short; 2490 if (changed & WIPHY_PARAM_RETRY_LONG) 2491 rdev->wiphy.retry_long = retry_long; 2492 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2493 rdev->wiphy.frag_threshold = frag_threshold; 2494 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2495 rdev->wiphy.rts_threshold = rts_threshold; 2496 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2497 rdev->wiphy.coverage_class = coverage_class; 2498 2499 result = rdev_set_wiphy_params(rdev, changed); 2500 if (result) { 2501 rdev->wiphy.retry_short = old_retry_short; 2502 rdev->wiphy.retry_long = old_retry_long; 2503 rdev->wiphy.frag_threshold = old_frag_threshold; 2504 rdev->wiphy.rts_threshold = old_rts_threshold; 2505 rdev->wiphy.coverage_class = old_coverage_class; 2506 return result; 2507 } 2508 } 2509 return 0; 2510 } 2511 2512 static inline u64 wdev_id(struct wireless_dev *wdev) 2513 { 2514 return (u64)wdev->identifier | 2515 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2516 } 2517 2518 static int nl80211_send_chandef(struct sk_buff *msg, 2519 const struct cfg80211_chan_def *chandef) 2520 { 2521 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2522 return -EINVAL; 2523 2524 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2525 chandef->chan->center_freq)) 2526 return -ENOBUFS; 2527 switch (chandef->width) { 2528 case NL80211_CHAN_WIDTH_20_NOHT: 2529 case NL80211_CHAN_WIDTH_20: 2530 case NL80211_CHAN_WIDTH_40: 2531 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2532 cfg80211_get_chandef_type(chandef))) 2533 return -ENOBUFS; 2534 break; 2535 default: 2536 break; 2537 } 2538 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2539 return -ENOBUFS; 2540 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2541 return -ENOBUFS; 2542 if (chandef->center_freq2 && 2543 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2544 return -ENOBUFS; 2545 return 0; 2546 } 2547 2548 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2549 struct cfg80211_registered_device *rdev, 2550 struct wireless_dev *wdev, bool removal) 2551 { 2552 struct net_device *dev = wdev->netdev; 2553 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2554 void *hdr; 2555 2556 if (removal) 2557 cmd = NL80211_CMD_DEL_INTERFACE; 2558 2559 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2560 if (!hdr) 2561 return -1; 2562 2563 if (dev && 2564 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2565 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2566 goto nla_put_failure; 2567 2568 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2569 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2570 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 2571 NL80211_ATTR_PAD) || 2572 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2573 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2574 rdev->devlist_generation ^ 2575 (cfg80211_rdev_list_generation << 2))) 2576 goto nla_put_failure; 2577 2578 if (rdev->ops->get_channel) { 2579 int ret; 2580 struct cfg80211_chan_def chandef; 2581 2582 ret = rdev_get_channel(rdev, wdev, &chandef); 2583 if (ret == 0) { 2584 if (nl80211_send_chandef(msg, &chandef)) 2585 goto nla_put_failure; 2586 } 2587 } 2588 2589 if (rdev->ops->get_tx_power) { 2590 int dbm, ret; 2591 2592 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2593 if (ret == 0 && 2594 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2595 DBM_TO_MBM(dbm))) 2596 goto nla_put_failure; 2597 } 2598 2599 if (wdev->ssid_len) { 2600 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2601 goto nla_put_failure; 2602 } 2603 2604 genlmsg_end(msg, hdr); 2605 return 0; 2606 2607 nla_put_failure: 2608 genlmsg_cancel(msg, hdr); 2609 return -EMSGSIZE; 2610 } 2611 2612 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2613 { 2614 int wp_idx = 0; 2615 int if_idx = 0; 2616 int wp_start = cb->args[0]; 2617 int if_start = cb->args[1]; 2618 int filter_wiphy = -1; 2619 struct cfg80211_registered_device *rdev; 2620 struct wireless_dev *wdev; 2621 int ret; 2622 2623 rtnl_lock(); 2624 if (!cb->args[2]) { 2625 struct nl80211_dump_wiphy_state state = { 2626 .filter_wiphy = -1, 2627 }; 2628 2629 ret = nl80211_dump_wiphy_parse(skb, cb, &state); 2630 if (ret) 2631 goto out_unlock; 2632 2633 filter_wiphy = state.filter_wiphy; 2634 2635 /* 2636 * if filtering, set cb->args[2] to +1 since 0 is the default 2637 * value needed to determine that parsing is necessary. 2638 */ 2639 if (filter_wiphy >= 0) 2640 cb->args[2] = filter_wiphy + 1; 2641 else 2642 cb->args[2] = -1; 2643 } else if (cb->args[2] > 0) { 2644 filter_wiphy = cb->args[2] - 1; 2645 } 2646 2647 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2648 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2649 continue; 2650 if (wp_idx < wp_start) { 2651 wp_idx++; 2652 continue; 2653 } 2654 2655 if (filter_wiphy >= 0 && filter_wiphy != rdev->wiphy_idx) 2656 continue; 2657 2658 if_idx = 0; 2659 2660 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 2661 if (if_idx < if_start) { 2662 if_idx++; 2663 continue; 2664 } 2665 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2666 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2667 rdev, wdev, false) < 0) { 2668 goto out; 2669 } 2670 if_idx++; 2671 } 2672 2673 wp_idx++; 2674 } 2675 out: 2676 cb->args[0] = wp_idx; 2677 cb->args[1] = if_idx; 2678 2679 ret = skb->len; 2680 out_unlock: 2681 rtnl_unlock(); 2682 2683 return ret; 2684 } 2685 2686 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2687 { 2688 struct sk_buff *msg; 2689 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2690 struct wireless_dev *wdev = info->user_ptr[1]; 2691 2692 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2693 if (!msg) 2694 return -ENOMEM; 2695 2696 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2697 rdev, wdev, false) < 0) { 2698 nlmsg_free(msg); 2699 return -ENOBUFS; 2700 } 2701 2702 return genlmsg_reply(msg, info); 2703 } 2704 2705 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2706 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2707 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2708 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2709 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2710 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2711 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2712 }; 2713 2714 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2715 { 2716 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2717 int flag; 2718 2719 *mntrflags = 0; 2720 2721 if (!nla) 2722 return -EINVAL; 2723 2724 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, nla, 2725 mntr_flags_policy, NULL)) 2726 return -EINVAL; 2727 2728 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2729 if (flags[flag]) 2730 *mntrflags |= (1<<flag); 2731 2732 *mntrflags |= MONITOR_FLAG_CHANGED; 2733 2734 return 0; 2735 } 2736 2737 static int nl80211_parse_mon_options(struct cfg80211_registered_device *rdev, 2738 enum nl80211_iftype type, 2739 struct genl_info *info, 2740 struct vif_params *params) 2741 { 2742 bool change = false; 2743 int err; 2744 2745 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2746 if (type != NL80211_IFTYPE_MONITOR) 2747 return -EINVAL; 2748 2749 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2750 ¶ms->flags); 2751 if (err) 2752 return err; 2753 2754 change = true; 2755 } 2756 2757 if (params->flags & MONITOR_FLAG_ACTIVE && 2758 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2759 return -EOPNOTSUPP; 2760 2761 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 2762 const u8 *mumimo_groups; 2763 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2764 2765 if (type != NL80211_IFTYPE_MONITOR) 2766 return -EINVAL; 2767 2768 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2769 return -EOPNOTSUPP; 2770 2771 mumimo_groups = 2772 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 2773 2774 /* bits 0 and 63 are reserved and must be zero */ 2775 if ((mumimo_groups[0] & BIT(0)) || 2776 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(7))) 2777 return -EINVAL; 2778 2779 params->vht_mumimo_groups = mumimo_groups; 2780 change = true; 2781 } 2782 2783 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 2784 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2785 2786 if (type != NL80211_IFTYPE_MONITOR) 2787 return -EINVAL; 2788 2789 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2790 return -EOPNOTSUPP; 2791 2792 params->vht_mumimo_follow_addr = 2793 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]); 2794 change = true; 2795 } 2796 2797 return change ? 1 : 0; 2798 } 2799 2800 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2801 struct net_device *netdev, u8 use_4addr, 2802 enum nl80211_iftype iftype) 2803 { 2804 if (!use_4addr) { 2805 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2806 return -EBUSY; 2807 return 0; 2808 } 2809 2810 switch (iftype) { 2811 case NL80211_IFTYPE_AP_VLAN: 2812 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2813 return 0; 2814 break; 2815 case NL80211_IFTYPE_STATION: 2816 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2817 return 0; 2818 break; 2819 default: 2820 break; 2821 } 2822 2823 return -EOPNOTSUPP; 2824 } 2825 2826 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2827 { 2828 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2829 struct vif_params params; 2830 int err; 2831 enum nl80211_iftype otype, ntype; 2832 struct net_device *dev = info->user_ptr[1]; 2833 bool change = false; 2834 2835 memset(¶ms, 0, sizeof(params)); 2836 2837 otype = ntype = dev->ieee80211_ptr->iftype; 2838 2839 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2840 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2841 if (otype != ntype) 2842 change = true; 2843 if (ntype > NL80211_IFTYPE_MAX) 2844 return -EINVAL; 2845 } 2846 2847 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2848 struct wireless_dev *wdev = dev->ieee80211_ptr; 2849 2850 if (ntype != NL80211_IFTYPE_MESH_POINT) 2851 return -EINVAL; 2852 if (netif_running(dev)) 2853 return -EBUSY; 2854 2855 wdev_lock(wdev); 2856 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2857 IEEE80211_MAX_MESH_ID_LEN); 2858 wdev->mesh_id_up_len = 2859 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2860 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2861 wdev->mesh_id_up_len); 2862 wdev_unlock(wdev); 2863 } 2864 2865 if (info->attrs[NL80211_ATTR_4ADDR]) { 2866 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2867 change = true; 2868 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2869 if (err) 2870 return err; 2871 } else { 2872 params.use_4addr = -1; 2873 } 2874 2875 err = nl80211_parse_mon_options(rdev, ntype, info, ¶ms); 2876 if (err < 0) 2877 return err; 2878 if (err > 0) 2879 change = true; 2880 2881 if (change) 2882 err = cfg80211_change_iface(rdev, dev, ntype, ¶ms); 2883 else 2884 err = 0; 2885 2886 if (!err && params.use_4addr != -1) 2887 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2888 2889 return err; 2890 } 2891 2892 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2893 { 2894 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2895 struct vif_params params; 2896 struct wireless_dev *wdev; 2897 struct sk_buff *msg; 2898 int err; 2899 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2900 2901 /* to avoid failing a new interface creation due to pending removal */ 2902 cfg80211_destroy_ifaces(rdev); 2903 2904 memset(¶ms, 0, sizeof(params)); 2905 2906 if (!info->attrs[NL80211_ATTR_IFNAME]) 2907 return -EINVAL; 2908 2909 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2910 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2911 if (type > NL80211_IFTYPE_MAX) 2912 return -EINVAL; 2913 } 2914 2915 if (!rdev->ops->add_virtual_intf || 2916 !(rdev->wiphy.interface_modes & (1 << type))) 2917 return -EOPNOTSUPP; 2918 2919 if ((type == NL80211_IFTYPE_P2P_DEVICE || type == NL80211_IFTYPE_NAN || 2920 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2921 info->attrs[NL80211_ATTR_MAC]) { 2922 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2923 ETH_ALEN); 2924 if (!is_valid_ether_addr(params.macaddr)) 2925 return -EADDRNOTAVAIL; 2926 } 2927 2928 if (info->attrs[NL80211_ATTR_4ADDR]) { 2929 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2930 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2931 if (err) 2932 return err; 2933 } 2934 2935 err = nl80211_parse_mon_options(rdev, type, info, ¶ms); 2936 if (err < 0) 2937 return err; 2938 2939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2940 if (!msg) 2941 return -ENOMEM; 2942 2943 wdev = rdev_add_virtual_intf(rdev, 2944 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2945 NET_NAME_USER, type, ¶ms); 2946 if (WARN_ON(!wdev)) { 2947 nlmsg_free(msg); 2948 return -EPROTO; 2949 } else if (IS_ERR(wdev)) { 2950 nlmsg_free(msg); 2951 return PTR_ERR(wdev); 2952 } 2953 2954 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2955 wdev->owner_nlportid = info->snd_portid; 2956 2957 switch (type) { 2958 case NL80211_IFTYPE_MESH_POINT: 2959 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2960 break; 2961 wdev_lock(wdev); 2962 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2963 IEEE80211_MAX_MESH_ID_LEN); 2964 wdev->mesh_id_up_len = 2965 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2966 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2967 wdev->mesh_id_up_len); 2968 wdev_unlock(wdev); 2969 break; 2970 case NL80211_IFTYPE_NAN: 2971 case NL80211_IFTYPE_P2P_DEVICE: 2972 /* 2973 * P2P Device and NAN do not have a netdev, so don't go 2974 * through the netdev notifier and must be added here 2975 */ 2976 mutex_init(&wdev->mtx); 2977 INIT_LIST_HEAD(&wdev->event_list); 2978 spin_lock_init(&wdev->event_lock); 2979 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2980 spin_lock_init(&wdev->mgmt_registrations_lock); 2981 2982 wdev->identifier = ++rdev->wdev_id; 2983 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); 2984 rdev->devlist_generation++; 2985 break; 2986 default: 2987 break; 2988 } 2989 2990 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2991 rdev, wdev, false) < 0) { 2992 nlmsg_free(msg); 2993 return -ENOBUFS; 2994 } 2995 2996 /* 2997 * For wdevs which have no associated netdev object (e.g. of type 2998 * NL80211_IFTYPE_P2P_DEVICE), emit the NEW_INTERFACE event here. 2999 * For all other types, the event will be generated from the 3000 * netdev notifier 3001 */ 3002 if (!wdev->netdev) 3003 nl80211_notify_iface(rdev, wdev, NL80211_CMD_NEW_INTERFACE); 3004 3005 return genlmsg_reply(msg, info); 3006 } 3007 3008 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 3009 { 3010 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3011 struct wireless_dev *wdev = info->user_ptr[1]; 3012 3013 if (!rdev->ops->del_virtual_intf) 3014 return -EOPNOTSUPP; 3015 3016 /* 3017 * If we remove a wireless device without a netdev then clear 3018 * user_ptr[1] so that nl80211_post_doit won't dereference it 3019 * to check if it needs to do dev_put(). Otherwise it crashes 3020 * since the wdev has been freed, unlike with a netdev where 3021 * we need the dev_put() for the netdev to really be freed. 3022 */ 3023 if (!wdev->netdev) 3024 info->user_ptr[1] = NULL; 3025 3026 return rdev_del_virtual_intf(rdev, wdev); 3027 } 3028 3029 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 3030 { 3031 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3032 struct net_device *dev = info->user_ptr[1]; 3033 u16 noack_map; 3034 3035 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 3036 return -EINVAL; 3037 3038 if (!rdev->ops->set_noack_map) 3039 return -EOPNOTSUPP; 3040 3041 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 3042 3043 return rdev_set_noack_map(rdev, dev, noack_map); 3044 } 3045 3046 struct get_key_cookie { 3047 struct sk_buff *msg; 3048 int error; 3049 int idx; 3050 }; 3051 3052 static void get_key_callback(void *c, struct key_params *params) 3053 { 3054 struct nlattr *key; 3055 struct get_key_cookie *cookie = c; 3056 3057 if ((params->key && 3058 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 3059 params->key_len, params->key)) || 3060 (params->seq && 3061 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 3062 params->seq_len, params->seq)) || 3063 (params->cipher && 3064 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 3065 params->cipher))) 3066 goto nla_put_failure; 3067 3068 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 3069 if (!key) 3070 goto nla_put_failure; 3071 3072 if ((params->key && 3073 nla_put(cookie->msg, NL80211_KEY_DATA, 3074 params->key_len, params->key)) || 3075 (params->seq && 3076 nla_put(cookie->msg, NL80211_KEY_SEQ, 3077 params->seq_len, params->seq)) || 3078 (params->cipher && 3079 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 3080 params->cipher))) 3081 goto nla_put_failure; 3082 3083 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 3084 goto nla_put_failure; 3085 3086 nla_nest_end(cookie->msg, key); 3087 3088 return; 3089 nla_put_failure: 3090 cookie->error = 1; 3091 } 3092 3093 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 3094 { 3095 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3096 int err; 3097 struct net_device *dev = info->user_ptr[1]; 3098 u8 key_idx = 0; 3099 const u8 *mac_addr = NULL; 3100 bool pairwise; 3101 struct get_key_cookie cookie = { 3102 .error = 0, 3103 }; 3104 void *hdr; 3105 struct sk_buff *msg; 3106 3107 if (info->attrs[NL80211_ATTR_KEY_IDX]) 3108 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 3109 3110 if (key_idx > 5) 3111 return -EINVAL; 3112 3113 if (info->attrs[NL80211_ATTR_MAC]) 3114 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3115 3116 pairwise = !!mac_addr; 3117 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 3118 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 3119 3120 if (kt >= NUM_NL80211_KEYTYPES) 3121 return -EINVAL; 3122 if (kt != NL80211_KEYTYPE_GROUP && 3123 kt != NL80211_KEYTYPE_PAIRWISE) 3124 return -EINVAL; 3125 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 3126 } 3127 3128 if (!rdev->ops->get_key) 3129 return -EOPNOTSUPP; 3130 3131 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3132 return -ENOENT; 3133 3134 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3135 if (!msg) 3136 return -ENOMEM; 3137 3138 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 3139 NL80211_CMD_NEW_KEY); 3140 if (!hdr) 3141 goto nla_put_failure; 3142 3143 cookie.msg = msg; 3144 cookie.idx = key_idx; 3145 3146 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3147 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 3148 goto nla_put_failure; 3149 if (mac_addr && 3150 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 3151 goto nla_put_failure; 3152 3153 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 3154 get_key_callback); 3155 3156 if (err) 3157 goto free_msg; 3158 3159 if (cookie.error) 3160 goto nla_put_failure; 3161 3162 genlmsg_end(msg, hdr); 3163 return genlmsg_reply(msg, info); 3164 3165 nla_put_failure: 3166 err = -ENOBUFS; 3167 free_msg: 3168 nlmsg_free(msg); 3169 return err; 3170 } 3171 3172 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 3173 { 3174 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3175 struct key_parse key; 3176 int err; 3177 struct net_device *dev = info->user_ptr[1]; 3178 3179 err = nl80211_parse_key(info, &key); 3180 if (err) 3181 return err; 3182 3183 if (key.idx < 0) 3184 return -EINVAL; 3185 3186 /* only support setting default key */ 3187 if (!key.def && !key.defmgmt) 3188 return -EINVAL; 3189 3190 wdev_lock(dev->ieee80211_ptr); 3191 3192 if (key.def) { 3193 if (!rdev->ops->set_default_key) { 3194 err = -EOPNOTSUPP; 3195 goto out; 3196 } 3197 3198 err = nl80211_key_allowed(dev->ieee80211_ptr); 3199 if (err) 3200 goto out; 3201 3202 err = rdev_set_default_key(rdev, dev, key.idx, 3203 key.def_uni, key.def_multi); 3204 3205 if (err) 3206 goto out; 3207 3208 #ifdef CONFIG_CFG80211_WEXT 3209 dev->ieee80211_ptr->wext.default_key = key.idx; 3210 #endif 3211 } else { 3212 if (key.def_uni || !key.def_multi) { 3213 err = -EINVAL; 3214 goto out; 3215 } 3216 3217 if (!rdev->ops->set_default_mgmt_key) { 3218 err = -EOPNOTSUPP; 3219 goto out; 3220 } 3221 3222 err = nl80211_key_allowed(dev->ieee80211_ptr); 3223 if (err) 3224 goto out; 3225 3226 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 3227 if (err) 3228 goto out; 3229 3230 #ifdef CONFIG_CFG80211_WEXT 3231 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3232 #endif 3233 } 3234 3235 out: 3236 wdev_unlock(dev->ieee80211_ptr); 3237 3238 return err; 3239 } 3240 3241 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3242 { 3243 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3244 int err; 3245 struct net_device *dev = info->user_ptr[1]; 3246 struct key_parse key; 3247 const u8 *mac_addr = NULL; 3248 3249 err = nl80211_parse_key(info, &key); 3250 if (err) 3251 return err; 3252 3253 if (!key.p.key) 3254 return -EINVAL; 3255 3256 if (info->attrs[NL80211_ATTR_MAC]) 3257 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3258 3259 if (key.type == -1) { 3260 if (mac_addr) 3261 key.type = NL80211_KEYTYPE_PAIRWISE; 3262 else 3263 key.type = NL80211_KEYTYPE_GROUP; 3264 } 3265 3266 /* for now */ 3267 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3268 key.type != NL80211_KEYTYPE_GROUP) 3269 return -EINVAL; 3270 3271 if (!rdev->ops->add_key) 3272 return -EOPNOTSUPP; 3273 3274 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3275 key.type == NL80211_KEYTYPE_PAIRWISE, 3276 mac_addr)) 3277 return -EINVAL; 3278 3279 wdev_lock(dev->ieee80211_ptr); 3280 err = nl80211_key_allowed(dev->ieee80211_ptr); 3281 if (!err) 3282 err = rdev_add_key(rdev, dev, key.idx, 3283 key.type == NL80211_KEYTYPE_PAIRWISE, 3284 mac_addr, &key.p); 3285 wdev_unlock(dev->ieee80211_ptr); 3286 3287 return err; 3288 } 3289 3290 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3291 { 3292 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3293 int err; 3294 struct net_device *dev = info->user_ptr[1]; 3295 u8 *mac_addr = NULL; 3296 struct key_parse key; 3297 3298 err = nl80211_parse_key(info, &key); 3299 if (err) 3300 return err; 3301 3302 if (info->attrs[NL80211_ATTR_MAC]) 3303 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3304 3305 if (key.type == -1) { 3306 if (mac_addr) 3307 key.type = NL80211_KEYTYPE_PAIRWISE; 3308 else 3309 key.type = NL80211_KEYTYPE_GROUP; 3310 } 3311 3312 /* for now */ 3313 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3314 key.type != NL80211_KEYTYPE_GROUP) 3315 return -EINVAL; 3316 3317 if (!rdev->ops->del_key) 3318 return -EOPNOTSUPP; 3319 3320 wdev_lock(dev->ieee80211_ptr); 3321 err = nl80211_key_allowed(dev->ieee80211_ptr); 3322 3323 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3324 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3325 err = -ENOENT; 3326 3327 if (!err) 3328 err = rdev_del_key(rdev, dev, key.idx, 3329 key.type == NL80211_KEYTYPE_PAIRWISE, 3330 mac_addr); 3331 3332 #ifdef CONFIG_CFG80211_WEXT 3333 if (!err) { 3334 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3335 dev->ieee80211_ptr->wext.default_key = -1; 3336 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3337 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3338 } 3339 #endif 3340 wdev_unlock(dev->ieee80211_ptr); 3341 3342 return err; 3343 } 3344 3345 /* This function returns an error or the number of nested attributes */ 3346 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3347 { 3348 struct nlattr *attr; 3349 int n_entries = 0, tmp; 3350 3351 nla_for_each_nested(attr, nl_attr, tmp) { 3352 if (nla_len(attr) != ETH_ALEN) 3353 return -EINVAL; 3354 3355 n_entries++; 3356 } 3357 3358 return n_entries; 3359 } 3360 3361 /* 3362 * This function parses ACL information and allocates memory for ACL data. 3363 * On successful return, the calling function is responsible to free the 3364 * ACL buffer returned by this function. 3365 */ 3366 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3367 struct genl_info *info) 3368 { 3369 enum nl80211_acl_policy acl_policy; 3370 struct nlattr *attr; 3371 struct cfg80211_acl_data *acl; 3372 int i = 0, n_entries, tmp; 3373 3374 if (!wiphy->max_acl_mac_addrs) 3375 return ERR_PTR(-EOPNOTSUPP); 3376 3377 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3378 return ERR_PTR(-EINVAL); 3379 3380 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3381 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3382 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3383 return ERR_PTR(-EINVAL); 3384 3385 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3386 return ERR_PTR(-EINVAL); 3387 3388 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3389 if (n_entries < 0) 3390 return ERR_PTR(n_entries); 3391 3392 if (n_entries > wiphy->max_acl_mac_addrs) 3393 return ERR_PTR(-ENOTSUPP); 3394 3395 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3396 GFP_KERNEL); 3397 if (!acl) 3398 return ERR_PTR(-ENOMEM); 3399 3400 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3401 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3402 i++; 3403 } 3404 3405 acl->n_acl_entries = n_entries; 3406 acl->acl_policy = acl_policy; 3407 3408 return acl; 3409 } 3410 3411 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3412 { 3413 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3414 struct net_device *dev = info->user_ptr[1]; 3415 struct cfg80211_acl_data *acl; 3416 int err; 3417 3418 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3419 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3420 return -EOPNOTSUPP; 3421 3422 if (!dev->ieee80211_ptr->beacon_interval) 3423 return -EINVAL; 3424 3425 acl = parse_acl_data(&rdev->wiphy, info); 3426 if (IS_ERR(acl)) 3427 return PTR_ERR(acl); 3428 3429 err = rdev_set_mac_acl(rdev, dev, acl); 3430 3431 kfree(acl); 3432 3433 return err; 3434 } 3435 3436 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 3437 u8 *rates, u8 rates_len) 3438 { 3439 u8 i; 3440 u32 mask = 0; 3441 3442 for (i = 0; i < rates_len; i++) { 3443 int rate = (rates[i] & 0x7f) * 5; 3444 int ridx; 3445 3446 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 3447 struct ieee80211_rate *srate = 3448 &sband->bitrates[ridx]; 3449 if (rate == srate->bitrate) { 3450 mask |= 1 << ridx; 3451 break; 3452 } 3453 } 3454 if (ridx == sband->n_bitrates) 3455 return 0; /* rate not found */ 3456 } 3457 3458 return mask; 3459 } 3460 3461 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 3462 u8 *rates, u8 rates_len, 3463 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 3464 { 3465 u8 i; 3466 3467 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 3468 3469 for (i = 0; i < rates_len; i++) { 3470 int ridx, rbit; 3471 3472 ridx = rates[i] / 8; 3473 rbit = BIT(rates[i] % 8); 3474 3475 /* check validity */ 3476 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 3477 return false; 3478 3479 /* check availability */ 3480 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 3481 mcs[ridx] |= rbit; 3482 else 3483 return false; 3484 } 3485 3486 return true; 3487 } 3488 3489 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 3490 { 3491 u16 mcs_mask = 0; 3492 3493 switch (vht_mcs_map) { 3494 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 3495 break; 3496 case IEEE80211_VHT_MCS_SUPPORT_0_7: 3497 mcs_mask = 0x00FF; 3498 break; 3499 case IEEE80211_VHT_MCS_SUPPORT_0_8: 3500 mcs_mask = 0x01FF; 3501 break; 3502 case IEEE80211_VHT_MCS_SUPPORT_0_9: 3503 mcs_mask = 0x03FF; 3504 break; 3505 default: 3506 break; 3507 } 3508 3509 return mcs_mask; 3510 } 3511 3512 static void vht_build_mcs_mask(u16 vht_mcs_map, 3513 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 3514 { 3515 u8 nss; 3516 3517 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 3518 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 3519 vht_mcs_map >>= 2; 3520 } 3521 } 3522 3523 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 3524 struct nl80211_txrate_vht *txrate, 3525 u16 mcs[NL80211_VHT_NSS_MAX]) 3526 { 3527 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3528 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 3529 u8 i; 3530 3531 if (!sband->vht_cap.vht_supported) 3532 return false; 3533 3534 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 3535 3536 /* Build vht_mcs_mask from VHT capabilities */ 3537 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 3538 3539 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3540 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 3541 mcs[i] = txrate->mcs[i]; 3542 else 3543 return false; 3544 } 3545 3546 return true; 3547 } 3548 3549 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 3550 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 3551 .len = NL80211_MAX_SUPP_RATES }, 3552 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 3553 .len = NL80211_MAX_SUPP_HT_RATES }, 3554 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 3555 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 3556 }; 3557 3558 static int nl80211_parse_tx_bitrate_mask(struct genl_info *info, 3559 struct cfg80211_bitrate_mask *mask) 3560 { 3561 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 3562 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3563 int rem, i; 3564 struct nlattr *tx_rates; 3565 struct ieee80211_supported_band *sband; 3566 u16 vht_tx_mcs_map; 3567 3568 memset(mask, 0, sizeof(*mask)); 3569 /* Default to all rates enabled */ 3570 for (i = 0; i < NUM_NL80211_BANDS; i++) { 3571 sband = rdev->wiphy.bands[i]; 3572 3573 if (!sband) 3574 continue; 3575 3576 mask->control[i].legacy = (1 << sband->n_bitrates) - 1; 3577 memcpy(mask->control[i].ht_mcs, 3578 sband->ht_cap.mcs.rx_mask, 3579 sizeof(mask->control[i].ht_mcs)); 3580 3581 if (!sband->vht_cap.vht_supported) 3582 continue; 3583 3584 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 3585 vht_build_mcs_mask(vht_tx_mcs_map, mask->control[i].vht_mcs); 3586 } 3587 3588 /* if no rates are given set it back to the defaults */ 3589 if (!info->attrs[NL80211_ATTR_TX_RATES]) 3590 goto out; 3591 3592 /* The nested attribute uses enum nl80211_band as the index. This maps 3593 * directly to the enum nl80211_band values used in cfg80211. 3594 */ 3595 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 3596 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 3597 enum nl80211_band band = nla_type(tx_rates); 3598 int err; 3599 3600 if (band < 0 || band >= NUM_NL80211_BANDS) 3601 return -EINVAL; 3602 sband = rdev->wiphy.bands[band]; 3603 if (sband == NULL) 3604 return -EINVAL; 3605 err = nla_parse_nested(tb, NL80211_TXRATE_MAX, tx_rates, 3606 nl80211_txattr_policy, info->extack); 3607 if (err) 3608 return err; 3609 if (tb[NL80211_TXRATE_LEGACY]) { 3610 mask->control[band].legacy = rateset_to_mask( 3611 sband, 3612 nla_data(tb[NL80211_TXRATE_LEGACY]), 3613 nla_len(tb[NL80211_TXRATE_LEGACY])); 3614 if ((mask->control[band].legacy == 0) && 3615 nla_len(tb[NL80211_TXRATE_LEGACY])) 3616 return -EINVAL; 3617 } 3618 if (tb[NL80211_TXRATE_HT]) { 3619 if (!ht_rateset_to_mask( 3620 sband, 3621 nla_data(tb[NL80211_TXRATE_HT]), 3622 nla_len(tb[NL80211_TXRATE_HT]), 3623 mask->control[band].ht_mcs)) 3624 return -EINVAL; 3625 } 3626 if (tb[NL80211_TXRATE_VHT]) { 3627 if (!vht_set_mcs_mask( 3628 sband, 3629 nla_data(tb[NL80211_TXRATE_VHT]), 3630 mask->control[band].vht_mcs)) 3631 return -EINVAL; 3632 } 3633 if (tb[NL80211_TXRATE_GI]) { 3634 mask->control[band].gi = 3635 nla_get_u8(tb[NL80211_TXRATE_GI]); 3636 if (mask->control[band].gi > NL80211_TXRATE_FORCE_LGI) 3637 return -EINVAL; 3638 } 3639 3640 if (mask->control[band].legacy == 0) { 3641 /* don't allow empty legacy rates if HT or VHT 3642 * are not even supported. 3643 */ 3644 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 3645 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 3646 return -EINVAL; 3647 3648 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 3649 if (mask->control[band].ht_mcs[i]) 3650 goto out; 3651 3652 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 3653 if (mask->control[band].vht_mcs[i]) 3654 goto out; 3655 3656 /* legacy and mcs rates may not be both empty */ 3657 return -EINVAL; 3658 } 3659 } 3660 3661 out: 3662 return 0; 3663 } 3664 3665 static int validate_beacon_tx_rate(struct cfg80211_registered_device *rdev, 3666 enum nl80211_band band, 3667 struct cfg80211_bitrate_mask *beacon_rate) 3668 { 3669 u32 count_ht, count_vht, i; 3670 u32 rate = beacon_rate->control[band].legacy; 3671 3672 /* Allow only one rate */ 3673 if (hweight32(rate) > 1) 3674 return -EINVAL; 3675 3676 count_ht = 0; 3677 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) { 3678 if (hweight8(beacon_rate->control[band].ht_mcs[i]) > 1) { 3679 return -EINVAL; 3680 } else if (beacon_rate->control[band].ht_mcs[i]) { 3681 count_ht++; 3682 if (count_ht > 1) 3683 return -EINVAL; 3684 } 3685 if (count_ht && rate) 3686 return -EINVAL; 3687 } 3688 3689 count_vht = 0; 3690 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 3691 if (hweight16(beacon_rate->control[band].vht_mcs[i]) > 1) { 3692 return -EINVAL; 3693 } else if (beacon_rate->control[band].vht_mcs[i]) { 3694 count_vht++; 3695 if (count_vht > 1) 3696 return -EINVAL; 3697 } 3698 if (count_vht && rate) 3699 return -EINVAL; 3700 } 3701 3702 if ((count_ht && count_vht) || (!rate && !count_ht && !count_vht)) 3703 return -EINVAL; 3704 3705 if (rate && 3706 !wiphy_ext_feature_isset(&rdev->wiphy, 3707 NL80211_EXT_FEATURE_BEACON_RATE_LEGACY)) 3708 return -EINVAL; 3709 if (count_ht && 3710 !wiphy_ext_feature_isset(&rdev->wiphy, 3711 NL80211_EXT_FEATURE_BEACON_RATE_HT)) 3712 return -EINVAL; 3713 if (count_vht && 3714 !wiphy_ext_feature_isset(&rdev->wiphy, 3715 NL80211_EXT_FEATURE_BEACON_RATE_VHT)) 3716 return -EINVAL; 3717 3718 return 0; 3719 } 3720 3721 static int nl80211_parse_beacon(struct nlattr *attrs[], 3722 struct cfg80211_beacon_data *bcn) 3723 { 3724 bool haveinfo = false; 3725 3726 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3727 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3728 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3729 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3730 return -EINVAL; 3731 3732 memset(bcn, 0, sizeof(*bcn)); 3733 3734 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3735 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3736 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3737 if (!bcn->head_len) 3738 return -EINVAL; 3739 haveinfo = true; 3740 } 3741 3742 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3743 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3744 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3745 haveinfo = true; 3746 } 3747 3748 if (!haveinfo) 3749 return -EINVAL; 3750 3751 if (attrs[NL80211_ATTR_IE]) { 3752 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3753 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3754 } 3755 3756 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3757 bcn->proberesp_ies = 3758 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3759 bcn->proberesp_ies_len = 3760 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3761 } 3762 3763 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3764 bcn->assocresp_ies = 3765 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3766 bcn->assocresp_ies_len = 3767 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3768 } 3769 3770 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3771 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3772 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3773 } 3774 3775 return 0; 3776 } 3777 3778 static void nl80211_check_ap_rate_selectors(struct cfg80211_ap_settings *params, 3779 const u8 *rates) 3780 { 3781 int i; 3782 3783 if (!rates) 3784 return; 3785 3786 for (i = 0; i < rates[1]; i++) { 3787 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_HT_PHY) 3788 params->ht_required = true; 3789 if (rates[2 + i] == BSS_MEMBERSHIP_SELECTOR_VHT_PHY) 3790 params->vht_required = true; 3791 } 3792 } 3793 3794 /* 3795 * Since the nl80211 API didn't include, from the beginning, attributes about 3796 * HT/VHT requirements/capabilities, we parse them out of the IEs for the 3797 * benefit of drivers that rebuild IEs in the firmware. 3798 */ 3799 static void nl80211_calculate_ap_params(struct cfg80211_ap_settings *params) 3800 { 3801 const struct cfg80211_beacon_data *bcn = ¶ms->beacon; 3802 size_t ies_len = bcn->tail_len; 3803 const u8 *ies = bcn->tail; 3804 const u8 *rates; 3805 const u8 *cap; 3806 3807 rates = cfg80211_find_ie(WLAN_EID_SUPP_RATES, ies, ies_len); 3808 nl80211_check_ap_rate_selectors(params, rates); 3809 3810 rates = cfg80211_find_ie(WLAN_EID_EXT_SUPP_RATES, ies, ies_len); 3811 nl80211_check_ap_rate_selectors(params, rates); 3812 3813 cap = cfg80211_find_ie(WLAN_EID_HT_CAPABILITY, ies, ies_len); 3814 if (cap && cap[1] >= sizeof(*params->ht_cap)) 3815 params->ht_cap = (void *)(cap + 2); 3816 cap = cfg80211_find_ie(WLAN_EID_VHT_CAPABILITY, ies, ies_len); 3817 if (cap && cap[1] >= sizeof(*params->vht_cap)) 3818 params->vht_cap = (void *)(cap + 2); 3819 } 3820 3821 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3822 struct cfg80211_ap_settings *params) 3823 { 3824 struct wireless_dev *wdev; 3825 bool ret = false; 3826 3827 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 3828 if (wdev->iftype != NL80211_IFTYPE_AP && 3829 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3830 continue; 3831 3832 if (!wdev->preset_chandef.chan) 3833 continue; 3834 3835 params->chandef = wdev->preset_chandef; 3836 ret = true; 3837 break; 3838 } 3839 3840 return ret; 3841 } 3842 3843 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3844 enum nl80211_auth_type auth_type, 3845 enum nl80211_commands cmd) 3846 { 3847 if (auth_type > NL80211_AUTHTYPE_MAX) 3848 return false; 3849 3850 switch (cmd) { 3851 case NL80211_CMD_AUTHENTICATE: 3852 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3853 auth_type == NL80211_AUTHTYPE_SAE) 3854 return false; 3855 if (!wiphy_ext_feature_isset(&rdev->wiphy, 3856 NL80211_EXT_FEATURE_FILS_STA) && 3857 (auth_type == NL80211_AUTHTYPE_FILS_SK || 3858 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3859 auth_type == NL80211_AUTHTYPE_FILS_PK)) 3860 return false; 3861 return true; 3862 case NL80211_CMD_CONNECT: 3863 /* SAE not supported yet */ 3864 if (auth_type == NL80211_AUTHTYPE_SAE) 3865 return false; 3866 /* FILS with SK PFS or PK not supported yet */ 3867 if (auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3868 auth_type == NL80211_AUTHTYPE_FILS_PK) 3869 return false; 3870 if (!wiphy_ext_feature_isset( 3871 &rdev->wiphy, 3872 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 3873 auth_type == NL80211_AUTHTYPE_FILS_SK) 3874 return false; 3875 return true; 3876 case NL80211_CMD_START_AP: 3877 /* SAE not supported yet */ 3878 if (auth_type == NL80211_AUTHTYPE_SAE) 3879 return false; 3880 /* FILS not supported yet */ 3881 if (auth_type == NL80211_AUTHTYPE_FILS_SK || 3882 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 3883 auth_type == NL80211_AUTHTYPE_FILS_PK) 3884 return false; 3885 return true; 3886 default: 3887 return false; 3888 } 3889 } 3890 3891 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3892 { 3893 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3894 struct net_device *dev = info->user_ptr[1]; 3895 struct wireless_dev *wdev = dev->ieee80211_ptr; 3896 struct cfg80211_ap_settings params; 3897 int err; 3898 3899 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3900 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3901 return -EOPNOTSUPP; 3902 3903 if (!rdev->ops->start_ap) 3904 return -EOPNOTSUPP; 3905 3906 if (wdev->beacon_interval) 3907 return -EALREADY; 3908 3909 memset(¶ms, 0, sizeof(params)); 3910 3911 /* these are required for START_AP */ 3912 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3913 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3914 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3915 return -EINVAL; 3916 3917 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3918 if (err) 3919 return err; 3920 3921 params.beacon_interval = 3922 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3923 params.dtim_period = 3924 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3925 3926 err = cfg80211_validate_beacon_int(rdev, dev->ieee80211_ptr->iftype, 3927 params.beacon_interval); 3928 if (err) 3929 return err; 3930 3931 /* 3932 * In theory, some of these attributes should be required here 3933 * but since they were not used when the command was originally 3934 * added, keep them optional for old user space programs to let 3935 * them continue to work with drivers that do not need the 3936 * additional information -- drivers must check! 3937 */ 3938 if (info->attrs[NL80211_ATTR_SSID]) { 3939 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3940 params.ssid_len = 3941 nla_len(info->attrs[NL80211_ATTR_SSID]); 3942 if (params.ssid_len == 0 || 3943 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3944 return -EINVAL; 3945 } 3946 3947 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3948 params.hidden_ssid = nla_get_u32( 3949 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3950 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3951 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3952 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3953 return -EINVAL; 3954 } 3955 3956 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3957 3958 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3959 params.auth_type = nla_get_u32( 3960 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3961 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3962 NL80211_CMD_START_AP)) 3963 return -EINVAL; 3964 } else 3965 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3966 3967 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3968 NL80211_MAX_NR_CIPHER_SUITES); 3969 if (err) 3970 return err; 3971 3972 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3973 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3974 return -EOPNOTSUPP; 3975 params.inactivity_timeout = nla_get_u16( 3976 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3977 } 3978 3979 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3980 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3981 return -EINVAL; 3982 params.p2p_ctwindow = 3983 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3984 if (params.p2p_ctwindow > 127) 3985 return -EINVAL; 3986 if (params.p2p_ctwindow != 0 && 3987 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3988 return -EINVAL; 3989 } 3990 3991 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3992 u8 tmp; 3993 3994 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3995 return -EINVAL; 3996 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3997 if (tmp > 1) 3998 return -EINVAL; 3999 params.p2p_opp_ps = tmp; 4000 if (params.p2p_opp_ps != 0 && 4001 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4002 return -EINVAL; 4003 } 4004 4005 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 4006 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 4007 if (err) 4008 return err; 4009 } else if (wdev->preset_chandef.chan) { 4010 params.chandef = wdev->preset_chandef; 4011 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 4012 return -EINVAL; 4013 4014 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 4015 wdev->iftype)) 4016 return -EINVAL; 4017 4018 if (info->attrs[NL80211_ATTR_TX_RATES]) { 4019 err = nl80211_parse_tx_bitrate_mask(info, ¶ms.beacon_rate); 4020 if (err) 4021 return err; 4022 4023 err = validate_beacon_tx_rate(rdev, params.chandef.chan->band, 4024 ¶ms.beacon_rate); 4025 if (err) 4026 return err; 4027 } 4028 4029 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 4030 params.smps_mode = 4031 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 4032 switch (params.smps_mode) { 4033 case NL80211_SMPS_OFF: 4034 break; 4035 case NL80211_SMPS_STATIC: 4036 if (!(rdev->wiphy.features & 4037 NL80211_FEATURE_STATIC_SMPS)) 4038 return -EINVAL; 4039 break; 4040 case NL80211_SMPS_DYNAMIC: 4041 if (!(rdev->wiphy.features & 4042 NL80211_FEATURE_DYNAMIC_SMPS)) 4043 return -EINVAL; 4044 break; 4045 default: 4046 return -EINVAL; 4047 } 4048 } else { 4049 params.smps_mode = NL80211_SMPS_OFF; 4050 } 4051 4052 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 4053 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 4054 return -EOPNOTSUPP; 4055 4056 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 4057 params.acl = parse_acl_data(&rdev->wiphy, info); 4058 if (IS_ERR(params.acl)) 4059 return PTR_ERR(params.acl); 4060 } 4061 4062 nl80211_calculate_ap_params(¶ms); 4063 4064 wdev_lock(wdev); 4065 err = rdev_start_ap(rdev, dev, ¶ms); 4066 if (!err) { 4067 wdev->preset_chandef = params.chandef; 4068 wdev->beacon_interval = params.beacon_interval; 4069 wdev->chandef = params.chandef; 4070 wdev->ssid_len = params.ssid_len; 4071 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 4072 } 4073 wdev_unlock(wdev); 4074 4075 kfree(params.acl); 4076 4077 return err; 4078 } 4079 4080 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 4081 { 4082 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4083 struct net_device *dev = info->user_ptr[1]; 4084 struct wireless_dev *wdev = dev->ieee80211_ptr; 4085 struct cfg80211_beacon_data params; 4086 int err; 4087 4088 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4089 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4090 return -EOPNOTSUPP; 4091 4092 if (!rdev->ops->change_beacon) 4093 return -EOPNOTSUPP; 4094 4095 if (!wdev->beacon_interval) 4096 return -EINVAL; 4097 4098 err = nl80211_parse_beacon(info->attrs, ¶ms); 4099 if (err) 4100 return err; 4101 4102 wdev_lock(wdev); 4103 err = rdev_change_beacon(rdev, dev, ¶ms); 4104 wdev_unlock(wdev); 4105 4106 return err; 4107 } 4108 4109 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 4110 { 4111 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4112 struct net_device *dev = info->user_ptr[1]; 4113 4114 return cfg80211_stop_ap(rdev, dev, false); 4115 } 4116 4117 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 4118 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 4119 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 4120 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 4121 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 4122 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 4123 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 4124 }; 4125 4126 static int parse_station_flags(struct genl_info *info, 4127 enum nl80211_iftype iftype, 4128 struct station_parameters *params) 4129 { 4130 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 4131 struct nlattr *nla; 4132 int flag; 4133 4134 /* 4135 * Try parsing the new attribute first so userspace 4136 * can specify both for older kernels. 4137 */ 4138 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 4139 if (nla) { 4140 struct nl80211_sta_flag_update *sta_flags; 4141 4142 sta_flags = nla_data(nla); 4143 params->sta_flags_mask = sta_flags->mask; 4144 params->sta_flags_set = sta_flags->set; 4145 params->sta_flags_set &= params->sta_flags_mask; 4146 if ((params->sta_flags_mask | 4147 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 4148 return -EINVAL; 4149 return 0; 4150 } 4151 4152 /* if present, parse the old attribute */ 4153 4154 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 4155 if (!nla) 4156 return 0; 4157 4158 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, nla, 4159 sta_flags_policy, info->extack)) 4160 return -EINVAL; 4161 4162 /* 4163 * Only allow certain flags for interface types so that 4164 * other attributes are silently ignored. Remember that 4165 * this is backward compatibility code with old userspace 4166 * and shouldn't be hit in other cases anyway. 4167 */ 4168 switch (iftype) { 4169 case NL80211_IFTYPE_AP: 4170 case NL80211_IFTYPE_AP_VLAN: 4171 case NL80211_IFTYPE_P2P_GO: 4172 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4173 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4174 BIT(NL80211_STA_FLAG_WME) | 4175 BIT(NL80211_STA_FLAG_MFP); 4176 break; 4177 case NL80211_IFTYPE_P2P_CLIENT: 4178 case NL80211_IFTYPE_STATION: 4179 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 4180 BIT(NL80211_STA_FLAG_TDLS_PEER); 4181 break; 4182 case NL80211_IFTYPE_MESH_POINT: 4183 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4184 BIT(NL80211_STA_FLAG_MFP) | 4185 BIT(NL80211_STA_FLAG_AUTHORIZED); 4186 default: 4187 return -EINVAL; 4188 } 4189 4190 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 4191 if (flags[flag]) { 4192 params->sta_flags_set |= (1<<flag); 4193 4194 /* no longer support new API additions in old API */ 4195 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 4196 return -EINVAL; 4197 } 4198 } 4199 4200 return 0; 4201 } 4202 4203 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 4204 int attr) 4205 { 4206 struct nlattr *rate; 4207 u32 bitrate; 4208 u16 bitrate_compat; 4209 enum nl80211_rate_info rate_flg; 4210 4211 rate = nla_nest_start(msg, attr); 4212 if (!rate) 4213 return false; 4214 4215 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 4216 bitrate = cfg80211_calculate_bitrate(info); 4217 /* report 16-bit bitrate only if we can */ 4218 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 4219 if (bitrate > 0 && 4220 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 4221 return false; 4222 if (bitrate_compat > 0 && 4223 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 4224 return false; 4225 4226 switch (info->bw) { 4227 case RATE_INFO_BW_5: 4228 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 4229 break; 4230 case RATE_INFO_BW_10: 4231 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 4232 break; 4233 default: 4234 WARN_ON(1); 4235 /* fall through */ 4236 case RATE_INFO_BW_20: 4237 rate_flg = 0; 4238 break; 4239 case RATE_INFO_BW_40: 4240 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 4241 break; 4242 case RATE_INFO_BW_80: 4243 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 4244 break; 4245 case RATE_INFO_BW_160: 4246 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 4247 break; 4248 } 4249 4250 if (rate_flg && nla_put_flag(msg, rate_flg)) 4251 return false; 4252 4253 if (info->flags & RATE_INFO_FLAGS_MCS) { 4254 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 4255 return false; 4256 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4257 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4258 return false; 4259 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 4260 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 4261 return false; 4262 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 4263 return false; 4264 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 4265 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 4266 return false; 4267 } 4268 4269 nla_nest_end(msg, rate); 4270 return true; 4271 } 4272 4273 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 4274 int id) 4275 { 4276 void *attr; 4277 int i = 0; 4278 4279 if (!mask) 4280 return true; 4281 4282 attr = nla_nest_start(msg, id); 4283 if (!attr) 4284 return false; 4285 4286 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 4287 if (!(mask & BIT(i))) 4288 continue; 4289 4290 if (nla_put_u8(msg, i, signal[i])) 4291 return false; 4292 } 4293 4294 nla_nest_end(msg, attr); 4295 4296 return true; 4297 } 4298 4299 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 4300 u32 seq, int flags, 4301 struct cfg80211_registered_device *rdev, 4302 struct net_device *dev, 4303 const u8 *mac_addr, struct station_info *sinfo) 4304 { 4305 void *hdr; 4306 struct nlattr *sinfoattr, *bss_param; 4307 4308 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 4309 if (!hdr) 4310 return -1; 4311 4312 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4313 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 4314 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 4315 goto nla_put_failure; 4316 4317 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 4318 if (!sinfoattr) 4319 goto nla_put_failure; 4320 4321 #define PUT_SINFO(attr, memb, type) do { \ 4322 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 4323 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 4324 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 4325 sinfo->memb)) \ 4326 goto nla_put_failure; \ 4327 } while (0) 4328 #define PUT_SINFO_U64(attr, memb) do { \ 4329 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 4330 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 4331 sinfo->memb, NL80211_STA_INFO_PAD)) \ 4332 goto nla_put_failure; \ 4333 } while (0) 4334 4335 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 4336 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 4337 4338 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 4339 BIT(NL80211_STA_INFO_RX_BYTES64)) && 4340 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 4341 (u32)sinfo->rx_bytes)) 4342 goto nla_put_failure; 4343 4344 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 4345 BIT(NL80211_STA_INFO_TX_BYTES64)) && 4346 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 4347 (u32)sinfo->tx_bytes)) 4348 goto nla_put_failure; 4349 4350 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 4351 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 4352 PUT_SINFO(LLID, llid, u16); 4353 PUT_SINFO(PLID, plid, u16); 4354 PUT_SINFO(PLINK_STATE, plink_state, u8); 4355 PUT_SINFO_U64(RX_DURATION, rx_duration); 4356 4357 switch (rdev->wiphy.signal_type) { 4358 case CFG80211_SIGNAL_TYPE_MBM: 4359 PUT_SINFO(SIGNAL, signal, u8); 4360 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 4361 break; 4362 default: 4363 break; 4364 } 4365 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 4366 if (!nl80211_put_signal(msg, sinfo->chains, 4367 sinfo->chain_signal, 4368 NL80211_STA_INFO_CHAIN_SIGNAL)) 4369 goto nla_put_failure; 4370 } 4371 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 4372 if (!nl80211_put_signal(msg, sinfo->chains, 4373 sinfo->chain_signal_avg, 4374 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 4375 goto nla_put_failure; 4376 } 4377 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 4378 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 4379 NL80211_STA_INFO_TX_BITRATE)) 4380 goto nla_put_failure; 4381 } 4382 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 4383 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 4384 NL80211_STA_INFO_RX_BITRATE)) 4385 goto nla_put_failure; 4386 } 4387 4388 PUT_SINFO(RX_PACKETS, rx_packets, u32); 4389 PUT_SINFO(TX_PACKETS, tx_packets, u32); 4390 PUT_SINFO(TX_RETRIES, tx_retries, u32); 4391 PUT_SINFO(TX_FAILED, tx_failed, u32); 4392 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 4393 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 4394 PUT_SINFO(LOCAL_PM, local_pm, u32); 4395 PUT_SINFO(PEER_PM, peer_pm, u32); 4396 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 4397 4398 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 4399 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 4400 if (!bss_param) 4401 goto nla_put_failure; 4402 4403 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 4404 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 4405 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 4406 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 4407 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 4408 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 4409 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 4410 sinfo->bss_param.dtim_period) || 4411 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 4412 sinfo->bss_param.beacon_interval)) 4413 goto nla_put_failure; 4414 4415 nla_nest_end(msg, bss_param); 4416 } 4417 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 4418 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 4419 sizeof(struct nl80211_sta_flag_update), 4420 &sinfo->sta_flags)) 4421 goto nla_put_failure; 4422 4423 PUT_SINFO_U64(T_OFFSET, t_offset); 4424 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 4425 PUT_SINFO_U64(BEACON_RX, rx_beacon); 4426 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 4427 4428 #undef PUT_SINFO 4429 #undef PUT_SINFO_U64 4430 4431 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 4432 struct nlattr *tidsattr; 4433 int tid; 4434 4435 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 4436 if (!tidsattr) 4437 goto nla_put_failure; 4438 4439 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 4440 struct cfg80211_tid_stats *tidstats; 4441 struct nlattr *tidattr; 4442 4443 tidstats = &sinfo->pertid[tid]; 4444 4445 if (!tidstats->filled) 4446 continue; 4447 4448 tidattr = nla_nest_start(msg, tid + 1); 4449 if (!tidattr) 4450 goto nla_put_failure; 4451 4452 #define PUT_TIDVAL_U64(attr, memb) do { \ 4453 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 4454 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 4455 tidstats->memb, NL80211_TID_STATS_PAD)) \ 4456 goto nla_put_failure; \ 4457 } while (0) 4458 4459 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 4460 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 4461 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 4462 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 4463 4464 #undef PUT_TIDVAL_U64 4465 nla_nest_end(msg, tidattr); 4466 } 4467 4468 nla_nest_end(msg, tidsattr); 4469 } 4470 4471 nla_nest_end(msg, sinfoattr); 4472 4473 if (sinfo->assoc_req_ies_len && 4474 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 4475 sinfo->assoc_req_ies)) 4476 goto nla_put_failure; 4477 4478 genlmsg_end(msg, hdr); 4479 return 0; 4480 4481 nla_put_failure: 4482 genlmsg_cancel(msg, hdr); 4483 return -EMSGSIZE; 4484 } 4485 4486 static int nl80211_dump_station(struct sk_buff *skb, 4487 struct netlink_callback *cb) 4488 { 4489 struct station_info sinfo; 4490 struct cfg80211_registered_device *rdev; 4491 struct wireless_dev *wdev; 4492 u8 mac_addr[ETH_ALEN]; 4493 int sta_idx = cb->args[2]; 4494 int err; 4495 4496 rtnl_lock(); 4497 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4498 if (err) 4499 goto out_err; 4500 4501 if (!wdev->netdev) { 4502 err = -EINVAL; 4503 goto out_err; 4504 } 4505 4506 if (!rdev->ops->dump_station) { 4507 err = -EOPNOTSUPP; 4508 goto out_err; 4509 } 4510 4511 while (1) { 4512 memset(&sinfo, 0, sizeof(sinfo)); 4513 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 4514 mac_addr, &sinfo); 4515 if (err == -ENOENT) 4516 break; 4517 if (err) 4518 goto out_err; 4519 4520 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 4521 NETLINK_CB(cb->skb).portid, 4522 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4523 rdev, wdev->netdev, mac_addr, 4524 &sinfo) < 0) 4525 goto out; 4526 4527 sta_idx++; 4528 } 4529 4530 out: 4531 cb->args[2] = sta_idx; 4532 err = skb->len; 4533 out_err: 4534 rtnl_unlock(); 4535 4536 return err; 4537 } 4538 4539 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 4540 { 4541 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4542 struct net_device *dev = info->user_ptr[1]; 4543 struct station_info sinfo; 4544 struct sk_buff *msg; 4545 u8 *mac_addr = NULL; 4546 int err; 4547 4548 memset(&sinfo, 0, sizeof(sinfo)); 4549 4550 if (!info->attrs[NL80211_ATTR_MAC]) 4551 return -EINVAL; 4552 4553 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4554 4555 if (!rdev->ops->get_station) 4556 return -EOPNOTSUPP; 4557 4558 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 4559 if (err) 4560 return err; 4561 4562 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4563 if (!msg) 4564 return -ENOMEM; 4565 4566 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 4567 info->snd_portid, info->snd_seq, 0, 4568 rdev, dev, mac_addr, &sinfo) < 0) { 4569 nlmsg_free(msg); 4570 return -ENOBUFS; 4571 } 4572 4573 return genlmsg_reply(msg, info); 4574 } 4575 4576 int cfg80211_check_station_change(struct wiphy *wiphy, 4577 struct station_parameters *params, 4578 enum cfg80211_station_type statype) 4579 { 4580 if (params->listen_interval != -1 && 4581 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4582 return -EINVAL; 4583 4584 if (params->support_p2p_ps != -1 && 4585 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4586 return -EINVAL; 4587 4588 if (params->aid && 4589 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 4590 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4591 return -EINVAL; 4592 4593 /* When you run into this, adjust the code below for the new flag */ 4594 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4595 4596 switch (statype) { 4597 case CFG80211_STA_MESH_PEER_KERNEL: 4598 case CFG80211_STA_MESH_PEER_USER: 4599 /* 4600 * No ignoring the TDLS flag here -- the userspace mesh 4601 * code doesn't have the bug of including TDLS in the 4602 * mask everywhere. 4603 */ 4604 if (params->sta_flags_mask & 4605 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4606 BIT(NL80211_STA_FLAG_MFP) | 4607 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4608 return -EINVAL; 4609 break; 4610 case CFG80211_STA_TDLS_PEER_SETUP: 4611 case CFG80211_STA_TDLS_PEER_ACTIVE: 4612 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4613 return -EINVAL; 4614 /* ignore since it can't change */ 4615 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4616 break; 4617 default: 4618 /* disallow mesh-specific things */ 4619 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4620 return -EINVAL; 4621 if (params->local_pm) 4622 return -EINVAL; 4623 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4624 return -EINVAL; 4625 } 4626 4627 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4628 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4629 /* TDLS can't be set, ... */ 4630 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4631 return -EINVAL; 4632 /* 4633 * ... but don't bother the driver with it. This works around 4634 * a hostapd/wpa_supplicant issue -- it always includes the 4635 * TLDS_PEER flag in the mask even for AP mode. 4636 */ 4637 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4638 } 4639 4640 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4641 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4642 /* reject other things that can't change */ 4643 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4644 return -EINVAL; 4645 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4646 return -EINVAL; 4647 if (params->supported_rates) 4648 return -EINVAL; 4649 if (params->ext_capab || params->ht_capa || params->vht_capa) 4650 return -EINVAL; 4651 } 4652 4653 if (statype != CFG80211_STA_AP_CLIENT && 4654 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4655 if (params->vlan) 4656 return -EINVAL; 4657 } 4658 4659 switch (statype) { 4660 case CFG80211_STA_AP_MLME_CLIENT: 4661 /* Use this only for authorizing/unauthorizing a station */ 4662 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4663 return -EOPNOTSUPP; 4664 break; 4665 case CFG80211_STA_AP_CLIENT: 4666 case CFG80211_STA_AP_CLIENT_UNASSOC: 4667 /* accept only the listed bits */ 4668 if (params->sta_flags_mask & 4669 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4670 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4671 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4672 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4673 BIT(NL80211_STA_FLAG_WME) | 4674 BIT(NL80211_STA_FLAG_MFP))) 4675 return -EINVAL; 4676 4677 /* but authenticated/associated only if driver handles it */ 4678 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4679 params->sta_flags_mask & 4680 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4681 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4682 return -EINVAL; 4683 break; 4684 case CFG80211_STA_IBSS: 4685 case CFG80211_STA_AP_STA: 4686 /* reject any changes other than AUTHORIZED */ 4687 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4688 return -EINVAL; 4689 break; 4690 case CFG80211_STA_TDLS_PEER_SETUP: 4691 /* reject any changes other than AUTHORIZED or WME */ 4692 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4693 BIT(NL80211_STA_FLAG_WME))) 4694 return -EINVAL; 4695 /* force (at least) rates when authorizing */ 4696 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4697 !params->supported_rates) 4698 return -EINVAL; 4699 break; 4700 case CFG80211_STA_TDLS_PEER_ACTIVE: 4701 /* reject any changes */ 4702 return -EINVAL; 4703 case CFG80211_STA_MESH_PEER_KERNEL: 4704 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4705 return -EINVAL; 4706 break; 4707 case CFG80211_STA_MESH_PEER_USER: 4708 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 4709 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 4710 return -EINVAL; 4711 break; 4712 } 4713 4714 /* 4715 * Older kernel versions ignored this attribute entirely, so don't 4716 * reject attempts to update it but mark it as unused instead so the 4717 * driver won't look at the data. 4718 */ 4719 if (statype != CFG80211_STA_AP_CLIENT_UNASSOC && 4720 statype != CFG80211_STA_TDLS_PEER_SETUP) 4721 params->opmode_notif_used = false; 4722 4723 return 0; 4724 } 4725 EXPORT_SYMBOL(cfg80211_check_station_change); 4726 4727 /* 4728 * Get vlan interface making sure it is running and on the right wiphy. 4729 */ 4730 static struct net_device *get_vlan(struct genl_info *info, 4731 struct cfg80211_registered_device *rdev) 4732 { 4733 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4734 struct net_device *v; 4735 int ret; 4736 4737 if (!vlanattr) 4738 return NULL; 4739 4740 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4741 if (!v) 4742 return ERR_PTR(-ENODEV); 4743 4744 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4745 ret = -EINVAL; 4746 goto error; 4747 } 4748 4749 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4750 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4751 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4752 ret = -EINVAL; 4753 goto error; 4754 } 4755 4756 if (!netif_running(v)) { 4757 ret = -ENETDOWN; 4758 goto error; 4759 } 4760 4761 return v; 4762 error: 4763 dev_put(v); 4764 return ERR_PTR(ret); 4765 } 4766 4767 static const struct nla_policy 4768 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4769 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4770 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4771 }; 4772 4773 static int nl80211_parse_sta_wme(struct genl_info *info, 4774 struct station_parameters *params) 4775 { 4776 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4777 struct nlattr *nla; 4778 int err; 4779 4780 /* parse WME attributes if present */ 4781 if (!info->attrs[NL80211_ATTR_STA_WME]) 4782 return 0; 4783 4784 nla = info->attrs[NL80211_ATTR_STA_WME]; 4785 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4786 nl80211_sta_wme_policy, info->extack); 4787 if (err) 4788 return err; 4789 4790 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4791 params->uapsd_queues = nla_get_u8( 4792 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4793 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4794 return -EINVAL; 4795 4796 if (tb[NL80211_STA_WME_MAX_SP]) 4797 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4798 4799 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4800 return -EINVAL; 4801 4802 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4803 4804 return 0; 4805 } 4806 4807 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4808 struct station_parameters *params) 4809 { 4810 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4811 params->supported_channels = 4812 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4813 params->supported_channels_len = 4814 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4815 /* 4816 * Need to include at least one (first channel, number of 4817 * channels) tuple for each subband, and must have proper 4818 * tuples for the rest of the data as well. 4819 */ 4820 if (params->supported_channels_len < 2) 4821 return -EINVAL; 4822 if (params->supported_channels_len % 2) 4823 return -EINVAL; 4824 } 4825 4826 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4827 params->supported_oper_classes = 4828 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4829 params->supported_oper_classes_len = 4830 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4831 /* 4832 * The value of the Length field of the Supported Operating 4833 * Classes element is between 2 and 253. 4834 */ 4835 if (params->supported_oper_classes_len < 2 || 4836 params->supported_oper_classes_len > 253) 4837 return -EINVAL; 4838 } 4839 return 0; 4840 } 4841 4842 static int nl80211_set_station_tdls(struct genl_info *info, 4843 struct station_parameters *params) 4844 { 4845 int err; 4846 /* Dummy STA entry gets updated once the peer capabilities are known */ 4847 if (info->attrs[NL80211_ATTR_PEER_AID]) 4848 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4849 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4850 params->ht_capa = 4851 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4852 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4853 params->vht_capa = 4854 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4855 4856 err = nl80211_parse_sta_channel_info(info, params); 4857 if (err) 4858 return err; 4859 4860 return nl80211_parse_sta_wme(info, params); 4861 } 4862 4863 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4864 { 4865 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4866 struct net_device *dev = info->user_ptr[1]; 4867 struct station_parameters params; 4868 u8 *mac_addr; 4869 int err; 4870 4871 memset(¶ms, 0, sizeof(params)); 4872 4873 if (!rdev->ops->change_station) 4874 return -EOPNOTSUPP; 4875 4876 /* 4877 * AID and listen_interval properties can be set only for unassociated 4878 * station. Include these parameters here and will check them in 4879 * cfg80211_check_station_change(). 4880 */ 4881 if (info->attrs[NL80211_ATTR_STA_AID]) 4882 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4883 4884 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4885 params.listen_interval = 4886 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4887 else 4888 params.listen_interval = -1; 4889 4890 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 4891 u8 tmp; 4892 4893 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 4894 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 4895 return -EINVAL; 4896 4897 params.support_p2p_ps = tmp; 4898 } else { 4899 params.support_p2p_ps = -1; 4900 } 4901 4902 if (!info->attrs[NL80211_ATTR_MAC]) 4903 return -EINVAL; 4904 4905 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4906 4907 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4908 params.supported_rates = 4909 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4910 params.supported_rates_len = 4911 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4912 } 4913 4914 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4915 params.capability = 4916 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4917 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4918 } 4919 4920 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4921 params.ext_capab = 4922 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4923 params.ext_capab_len = 4924 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4925 } 4926 4927 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4928 return -EINVAL; 4929 4930 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4931 params.plink_action = 4932 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4933 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4934 return -EINVAL; 4935 } 4936 4937 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4938 params.plink_state = 4939 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4940 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4941 return -EINVAL; 4942 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) { 4943 params.peer_aid = nla_get_u16( 4944 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 4945 if (params.peer_aid > IEEE80211_MAX_AID) 4946 return -EINVAL; 4947 } 4948 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4949 } 4950 4951 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4952 enum nl80211_mesh_power_mode pm = nla_get_u32( 4953 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4954 4955 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4956 pm > NL80211_MESH_POWER_MAX) 4957 return -EINVAL; 4958 4959 params.local_pm = pm; 4960 } 4961 4962 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4963 params.opmode_notif_used = true; 4964 params.opmode_notif = 4965 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4966 } 4967 4968 /* Include parameters for TDLS peer (will check later) */ 4969 err = nl80211_set_station_tdls(info, ¶ms); 4970 if (err) 4971 return err; 4972 4973 params.vlan = get_vlan(info, rdev); 4974 if (IS_ERR(params.vlan)) 4975 return PTR_ERR(params.vlan); 4976 4977 switch (dev->ieee80211_ptr->iftype) { 4978 case NL80211_IFTYPE_AP: 4979 case NL80211_IFTYPE_AP_VLAN: 4980 case NL80211_IFTYPE_P2P_GO: 4981 case NL80211_IFTYPE_P2P_CLIENT: 4982 case NL80211_IFTYPE_STATION: 4983 case NL80211_IFTYPE_ADHOC: 4984 case NL80211_IFTYPE_MESH_POINT: 4985 break; 4986 default: 4987 err = -EOPNOTSUPP; 4988 goto out_put_vlan; 4989 } 4990 4991 /* driver will call cfg80211_check_station_change() */ 4992 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4993 4994 out_put_vlan: 4995 if (params.vlan) 4996 dev_put(params.vlan); 4997 4998 return err; 4999 } 5000 5001 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 5002 { 5003 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5004 int err; 5005 struct net_device *dev = info->user_ptr[1]; 5006 struct station_parameters params; 5007 u8 *mac_addr = NULL; 5008 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 5009 BIT(NL80211_STA_FLAG_ASSOCIATED); 5010 5011 memset(¶ms, 0, sizeof(params)); 5012 5013 if (!rdev->ops->add_station) 5014 return -EOPNOTSUPP; 5015 5016 if (!info->attrs[NL80211_ATTR_MAC]) 5017 return -EINVAL; 5018 5019 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 5020 return -EINVAL; 5021 5022 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 5023 return -EINVAL; 5024 5025 if (!info->attrs[NL80211_ATTR_STA_AID] && 5026 !info->attrs[NL80211_ATTR_PEER_AID]) 5027 return -EINVAL; 5028 5029 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 5030 params.supported_rates = 5031 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5032 params.supported_rates_len = 5033 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 5034 params.listen_interval = 5035 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 5036 5037 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 5038 u8 tmp; 5039 5040 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 5041 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 5042 return -EINVAL; 5043 5044 params.support_p2p_ps = tmp; 5045 } else { 5046 /* 5047 * if not specified, assume it's supported for P2P GO interface, 5048 * and is NOT supported for AP interface 5049 */ 5050 params.support_p2p_ps = 5051 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 5052 } 5053 5054 if (info->attrs[NL80211_ATTR_PEER_AID]) 5055 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 5056 else 5057 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 5058 if (!params.aid || params.aid > IEEE80211_MAX_AID) 5059 return -EINVAL; 5060 5061 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 5062 params.capability = 5063 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 5064 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 5065 } 5066 5067 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 5068 params.ext_capab = 5069 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5070 params.ext_capab_len = 5071 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 5072 } 5073 5074 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 5075 params.ht_capa = 5076 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 5077 5078 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 5079 params.vht_capa = 5080 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 5081 5082 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 5083 params.opmode_notif_used = true; 5084 params.opmode_notif = 5085 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 5086 } 5087 5088 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 5089 params.plink_action = 5090 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 5091 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 5092 return -EINVAL; 5093 } 5094 5095 err = nl80211_parse_sta_channel_info(info, ¶ms); 5096 if (err) 5097 return err; 5098 5099 err = nl80211_parse_sta_wme(info, ¶ms); 5100 if (err) 5101 return err; 5102 5103 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 5104 return -EINVAL; 5105 5106 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 5107 * as userspace might just pass through the capabilities from the IEs 5108 * directly, rather than enforcing this restriction and returning an 5109 * error in this case. 5110 */ 5111 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 5112 params.ht_capa = NULL; 5113 params.vht_capa = NULL; 5114 } 5115 5116 /* When you run into this, adjust the code below for the new flag */ 5117 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 5118 5119 switch (dev->ieee80211_ptr->iftype) { 5120 case NL80211_IFTYPE_AP: 5121 case NL80211_IFTYPE_AP_VLAN: 5122 case NL80211_IFTYPE_P2P_GO: 5123 /* ignore WME attributes if iface/sta is not capable */ 5124 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 5125 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 5126 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5127 5128 /* TDLS peers cannot be added */ 5129 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5130 info->attrs[NL80211_ATTR_PEER_AID]) 5131 return -EINVAL; 5132 /* but don't bother the driver with it */ 5133 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 5134 5135 /* allow authenticated/associated only if driver handles it */ 5136 if (!(rdev->wiphy.features & 5137 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 5138 params.sta_flags_mask & auth_assoc) 5139 return -EINVAL; 5140 5141 /* Older userspace, or userspace wanting to be compatible with 5142 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 5143 * and assoc flags in the mask, but assumes the station will be 5144 * added as associated anyway since this was the required driver 5145 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 5146 * introduced. 5147 * In order to not bother drivers with this quirk in the API 5148 * set the flags in both the mask and set for new stations in 5149 * this case. 5150 */ 5151 if (!(params.sta_flags_mask & auth_assoc)) { 5152 params.sta_flags_mask |= auth_assoc; 5153 params.sta_flags_set |= auth_assoc; 5154 } 5155 5156 /* must be last in here for error handling */ 5157 params.vlan = get_vlan(info, rdev); 5158 if (IS_ERR(params.vlan)) 5159 return PTR_ERR(params.vlan); 5160 break; 5161 case NL80211_IFTYPE_MESH_POINT: 5162 /* ignore uAPSD data */ 5163 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5164 5165 /* associated is disallowed */ 5166 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 5167 return -EINVAL; 5168 /* TDLS peers cannot be added */ 5169 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 5170 info->attrs[NL80211_ATTR_PEER_AID]) 5171 return -EINVAL; 5172 break; 5173 case NL80211_IFTYPE_STATION: 5174 case NL80211_IFTYPE_P2P_CLIENT: 5175 /* ignore uAPSD data */ 5176 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 5177 5178 /* these are disallowed */ 5179 if (params.sta_flags_mask & 5180 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 5181 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 5182 return -EINVAL; 5183 /* Only TDLS peers can be added */ 5184 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 5185 return -EINVAL; 5186 /* Can only add if TDLS ... */ 5187 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 5188 return -EOPNOTSUPP; 5189 /* ... with external setup is supported */ 5190 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 5191 return -EOPNOTSUPP; 5192 /* 5193 * Older wpa_supplicant versions always mark the TDLS peer 5194 * as authorized, but it shouldn't yet be. 5195 */ 5196 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 5197 break; 5198 default: 5199 return -EOPNOTSUPP; 5200 } 5201 5202 /* be aware of params.vlan when changing code here */ 5203 5204 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 5205 5206 if (params.vlan) 5207 dev_put(params.vlan); 5208 return err; 5209 } 5210 5211 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 5212 { 5213 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5214 struct net_device *dev = info->user_ptr[1]; 5215 struct station_del_parameters params; 5216 5217 memset(¶ms, 0, sizeof(params)); 5218 5219 if (info->attrs[NL80211_ATTR_MAC]) 5220 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 5221 5222 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5223 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 5224 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 5225 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5226 return -EINVAL; 5227 5228 if (!rdev->ops->del_station) 5229 return -EOPNOTSUPP; 5230 5231 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 5232 params.subtype = 5233 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 5234 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 5235 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 5236 return -EINVAL; 5237 } else { 5238 /* Default to Deauthentication frame */ 5239 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 5240 } 5241 5242 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 5243 params.reason_code = 5244 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 5245 if (params.reason_code == 0) 5246 return -EINVAL; /* 0 is reserved */ 5247 } else { 5248 /* Default to reason code 2 */ 5249 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 5250 } 5251 5252 return rdev_del_station(rdev, dev, ¶ms); 5253 } 5254 5255 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 5256 int flags, struct net_device *dev, 5257 u8 *dst, u8 *next_hop, 5258 struct mpath_info *pinfo) 5259 { 5260 void *hdr; 5261 struct nlattr *pinfoattr; 5262 5263 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 5264 if (!hdr) 5265 return -1; 5266 5267 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5268 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 5269 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 5270 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 5271 goto nla_put_failure; 5272 5273 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 5274 if (!pinfoattr) 5275 goto nla_put_failure; 5276 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 5277 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 5278 pinfo->frame_qlen)) 5279 goto nla_put_failure; 5280 if (((pinfo->filled & MPATH_INFO_SN) && 5281 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 5282 ((pinfo->filled & MPATH_INFO_METRIC) && 5283 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 5284 pinfo->metric)) || 5285 ((pinfo->filled & MPATH_INFO_EXPTIME) && 5286 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 5287 pinfo->exptime)) || 5288 ((pinfo->filled & MPATH_INFO_FLAGS) && 5289 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 5290 pinfo->flags)) || 5291 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 5292 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 5293 pinfo->discovery_timeout)) || 5294 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 5295 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 5296 pinfo->discovery_retries))) 5297 goto nla_put_failure; 5298 5299 nla_nest_end(msg, pinfoattr); 5300 5301 genlmsg_end(msg, hdr); 5302 return 0; 5303 5304 nla_put_failure: 5305 genlmsg_cancel(msg, hdr); 5306 return -EMSGSIZE; 5307 } 5308 5309 static int nl80211_dump_mpath(struct sk_buff *skb, 5310 struct netlink_callback *cb) 5311 { 5312 struct mpath_info pinfo; 5313 struct cfg80211_registered_device *rdev; 5314 struct wireless_dev *wdev; 5315 u8 dst[ETH_ALEN]; 5316 u8 next_hop[ETH_ALEN]; 5317 int path_idx = cb->args[2]; 5318 int err; 5319 5320 rtnl_lock(); 5321 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5322 if (err) 5323 goto out_err; 5324 5325 if (!rdev->ops->dump_mpath) { 5326 err = -EOPNOTSUPP; 5327 goto out_err; 5328 } 5329 5330 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5331 err = -EOPNOTSUPP; 5332 goto out_err; 5333 } 5334 5335 while (1) { 5336 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 5337 next_hop, &pinfo); 5338 if (err == -ENOENT) 5339 break; 5340 if (err) 5341 goto out_err; 5342 5343 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5344 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5345 wdev->netdev, dst, next_hop, 5346 &pinfo) < 0) 5347 goto out; 5348 5349 path_idx++; 5350 } 5351 5352 out: 5353 cb->args[2] = path_idx; 5354 err = skb->len; 5355 out_err: 5356 rtnl_unlock(); 5357 return err; 5358 } 5359 5360 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 5361 { 5362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5363 int err; 5364 struct net_device *dev = info->user_ptr[1]; 5365 struct mpath_info pinfo; 5366 struct sk_buff *msg; 5367 u8 *dst = NULL; 5368 u8 next_hop[ETH_ALEN]; 5369 5370 memset(&pinfo, 0, sizeof(pinfo)); 5371 5372 if (!info->attrs[NL80211_ATTR_MAC]) 5373 return -EINVAL; 5374 5375 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5376 5377 if (!rdev->ops->get_mpath) 5378 return -EOPNOTSUPP; 5379 5380 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5381 return -EOPNOTSUPP; 5382 5383 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 5384 if (err) 5385 return err; 5386 5387 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5388 if (!msg) 5389 return -ENOMEM; 5390 5391 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5392 dev, dst, next_hop, &pinfo) < 0) { 5393 nlmsg_free(msg); 5394 return -ENOBUFS; 5395 } 5396 5397 return genlmsg_reply(msg, info); 5398 } 5399 5400 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 5401 { 5402 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5403 struct net_device *dev = info->user_ptr[1]; 5404 u8 *dst = NULL; 5405 u8 *next_hop = NULL; 5406 5407 if (!info->attrs[NL80211_ATTR_MAC]) 5408 return -EINVAL; 5409 5410 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5411 return -EINVAL; 5412 5413 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5414 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5415 5416 if (!rdev->ops->change_mpath) 5417 return -EOPNOTSUPP; 5418 5419 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5420 return -EOPNOTSUPP; 5421 5422 return rdev_change_mpath(rdev, dev, dst, next_hop); 5423 } 5424 5425 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 5426 { 5427 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5428 struct net_device *dev = info->user_ptr[1]; 5429 u8 *dst = NULL; 5430 u8 *next_hop = NULL; 5431 5432 if (!info->attrs[NL80211_ATTR_MAC]) 5433 return -EINVAL; 5434 5435 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 5436 return -EINVAL; 5437 5438 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5439 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 5440 5441 if (!rdev->ops->add_mpath) 5442 return -EOPNOTSUPP; 5443 5444 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5445 return -EOPNOTSUPP; 5446 5447 return rdev_add_mpath(rdev, dev, dst, next_hop); 5448 } 5449 5450 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 5451 { 5452 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5453 struct net_device *dev = info->user_ptr[1]; 5454 u8 *dst = NULL; 5455 5456 if (info->attrs[NL80211_ATTR_MAC]) 5457 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5458 5459 if (!rdev->ops->del_mpath) 5460 return -EOPNOTSUPP; 5461 5462 return rdev_del_mpath(rdev, dev, dst); 5463 } 5464 5465 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 5466 { 5467 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5468 int err; 5469 struct net_device *dev = info->user_ptr[1]; 5470 struct mpath_info pinfo; 5471 struct sk_buff *msg; 5472 u8 *dst = NULL; 5473 u8 mpp[ETH_ALEN]; 5474 5475 memset(&pinfo, 0, sizeof(pinfo)); 5476 5477 if (!info->attrs[NL80211_ATTR_MAC]) 5478 return -EINVAL; 5479 5480 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 5481 5482 if (!rdev->ops->get_mpp) 5483 return -EOPNOTSUPP; 5484 5485 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 5486 return -EOPNOTSUPP; 5487 5488 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 5489 if (err) 5490 return err; 5491 5492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5493 if (!msg) 5494 return -ENOMEM; 5495 5496 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 5497 dev, dst, mpp, &pinfo) < 0) { 5498 nlmsg_free(msg); 5499 return -ENOBUFS; 5500 } 5501 5502 return genlmsg_reply(msg, info); 5503 } 5504 5505 static int nl80211_dump_mpp(struct sk_buff *skb, 5506 struct netlink_callback *cb) 5507 { 5508 struct mpath_info pinfo; 5509 struct cfg80211_registered_device *rdev; 5510 struct wireless_dev *wdev; 5511 u8 dst[ETH_ALEN]; 5512 u8 mpp[ETH_ALEN]; 5513 int path_idx = cb->args[2]; 5514 int err; 5515 5516 rtnl_lock(); 5517 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5518 if (err) 5519 goto out_err; 5520 5521 if (!rdev->ops->dump_mpp) { 5522 err = -EOPNOTSUPP; 5523 goto out_err; 5524 } 5525 5526 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5527 err = -EOPNOTSUPP; 5528 goto out_err; 5529 } 5530 5531 while (1) { 5532 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 5533 mpp, &pinfo); 5534 if (err == -ENOENT) 5535 break; 5536 if (err) 5537 goto out_err; 5538 5539 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5540 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5541 wdev->netdev, dst, mpp, 5542 &pinfo) < 0) 5543 goto out; 5544 5545 path_idx++; 5546 } 5547 5548 out: 5549 cb->args[2] = path_idx; 5550 err = skb->len; 5551 out_err: 5552 rtnl_unlock(); 5553 return err; 5554 } 5555 5556 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 5557 { 5558 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5559 struct net_device *dev = info->user_ptr[1]; 5560 struct wireless_dev *wdev = dev->ieee80211_ptr; 5561 struct bss_parameters params; 5562 int err; 5563 5564 memset(¶ms, 0, sizeof(params)); 5565 /* default to not changing parameters */ 5566 params.use_cts_prot = -1; 5567 params.use_short_preamble = -1; 5568 params.use_short_slot_time = -1; 5569 params.ap_isolate = -1; 5570 params.ht_opmode = -1; 5571 params.p2p_ctwindow = -1; 5572 params.p2p_opp_ps = -1; 5573 5574 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 5575 params.use_cts_prot = 5576 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 5577 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 5578 params.use_short_preamble = 5579 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 5580 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 5581 params.use_short_slot_time = 5582 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 5583 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 5584 params.basic_rates = 5585 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5586 params.basic_rates_len = 5587 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5588 } 5589 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 5590 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 5591 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 5592 params.ht_opmode = 5593 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 5594 5595 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5596 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5597 return -EINVAL; 5598 params.p2p_ctwindow = 5599 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5600 if (params.p2p_ctwindow < 0) 5601 return -EINVAL; 5602 if (params.p2p_ctwindow != 0 && 5603 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5604 return -EINVAL; 5605 } 5606 5607 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5608 u8 tmp; 5609 5610 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5611 return -EINVAL; 5612 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5613 if (tmp > 1) 5614 return -EINVAL; 5615 params.p2p_opp_ps = tmp; 5616 if (params.p2p_opp_ps && 5617 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5618 return -EINVAL; 5619 } 5620 5621 if (!rdev->ops->change_bss) 5622 return -EOPNOTSUPP; 5623 5624 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5625 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5626 return -EOPNOTSUPP; 5627 5628 wdev_lock(wdev); 5629 err = rdev_change_bss(rdev, dev, ¶ms); 5630 wdev_unlock(wdev); 5631 5632 return err; 5633 } 5634 5635 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 5636 { 5637 char *data = NULL; 5638 bool is_indoor; 5639 enum nl80211_user_reg_hint_type user_reg_hint_type; 5640 u32 owner_nlportid; 5641 5642 /* 5643 * You should only get this when cfg80211 hasn't yet initialized 5644 * completely when built-in to the kernel right between the time 5645 * window between nl80211_init() and regulatory_init(), if that is 5646 * even possible. 5647 */ 5648 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 5649 return -EINPROGRESS; 5650 5651 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 5652 user_reg_hint_type = 5653 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 5654 else 5655 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 5656 5657 switch (user_reg_hint_type) { 5658 case NL80211_USER_REG_HINT_USER: 5659 case NL80211_USER_REG_HINT_CELL_BASE: 5660 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5661 return -EINVAL; 5662 5663 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5664 return regulatory_hint_user(data, user_reg_hint_type); 5665 case NL80211_USER_REG_HINT_INDOOR: 5666 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5667 owner_nlportid = info->snd_portid; 5668 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5669 } else { 5670 owner_nlportid = 0; 5671 is_indoor = true; 5672 } 5673 5674 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5675 default: 5676 return -EINVAL; 5677 } 5678 } 5679 5680 static int nl80211_get_mesh_config(struct sk_buff *skb, 5681 struct genl_info *info) 5682 { 5683 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5684 struct net_device *dev = info->user_ptr[1]; 5685 struct wireless_dev *wdev = dev->ieee80211_ptr; 5686 struct mesh_config cur_params; 5687 int err = 0; 5688 void *hdr; 5689 struct nlattr *pinfoattr; 5690 struct sk_buff *msg; 5691 5692 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5693 return -EOPNOTSUPP; 5694 5695 if (!rdev->ops->get_mesh_config) 5696 return -EOPNOTSUPP; 5697 5698 wdev_lock(wdev); 5699 /* If not connected, get default parameters */ 5700 if (!wdev->mesh_id_len) 5701 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5702 else 5703 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5704 wdev_unlock(wdev); 5705 5706 if (err) 5707 return err; 5708 5709 /* Draw up a netlink message to send back */ 5710 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5711 if (!msg) 5712 return -ENOMEM; 5713 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5714 NL80211_CMD_GET_MESH_CONFIG); 5715 if (!hdr) 5716 goto out; 5717 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5718 if (!pinfoattr) 5719 goto nla_put_failure; 5720 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5721 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5722 cur_params.dot11MeshRetryTimeout) || 5723 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5724 cur_params.dot11MeshConfirmTimeout) || 5725 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5726 cur_params.dot11MeshHoldingTimeout) || 5727 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5728 cur_params.dot11MeshMaxPeerLinks) || 5729 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5730 cur_params.dot11MeshMaxRetries) || 5731 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5732 cur_params.dot11MeshTTL) || 5733 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5734 cur_params.element_ttl) || 5735 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5736 cur_params.auto_open_plinks) || 5737 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5738 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5739 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5740 cur_params.dot11MeshHWMPmaxPREQretries) || 5741 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5742 cur_params.path_refresh_time) || 5743 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5744 cur_params.min_discovery_timeout) || 5745 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5746 cur_params.dot11MeshHWMPactivePathTimeout) || 5747 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5748 cur_params.dot11MeshHWMPpreqMinInterval) || 5749 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5750 cur_params.dot11MeshHWMPperrMinInterval) || 5751 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5752 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5753 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5754 cur_params.dot11MeshHWMPRootMode) || 5755 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5756 cur_params.dot11MeshHWMPRannInterval) || 5757 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5758 cur_params.dot11MeshGateAnnouncementProtocol) || 5759 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5760 cur_params.dot11MeshForwarding) || 5761 nla_put_s32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5762 cur_params.rssi_threshold) || 5763 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5764 cur_params.ht_opmode) || 5765 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5766 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5767 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5768 cur_params.dot11MeshHWMProotInterval) || 5769 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5770 cur_params.dot11MeshHWMPconfirmationInterval) || 5771 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5772 cur_params.power_mode) || 5773 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5774 cur_params.dot11MeshAwakeWindowDuration) || 5775 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5776 cur_params.plink_timeout)) 5777 goto nla_put_failure; 5778 nla_nest_end(msg, pinfoattr); 5779 genlmsg_end(msg, hdr); 5780 return genlmsg_reply(msg, info); 5781 5782 nla_put_failure: 5783 genlmsg_cancel(msg, hdr); 5784 out: 5785 nlmsg_free(msg); 5786 return -ENOBUFS; 5787 } 5788 5789 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5790 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5791 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5792 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5793 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5794 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5795 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5796 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5797 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5798 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5799 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5800 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5801 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5802 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5803 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5804 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5805 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5806 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5807 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5808 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5809 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5810 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5811 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5812 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5813 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5814 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5815 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5816 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5817 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5818 }; 5819 5820 static const struct nla_policy 5821 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5822 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5823 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5824 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5825 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5826 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5827 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5828 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5829 .len = IEEE80211_MAX_DATA_LEN }, 5830 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5831 }; 5832 5833 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out) 5834 { 5835 u8 val = nla_get_u8(nla); 5836 if (val < min || val > max) 5837 return -EINVAL; 5838 *out = val; 5839 return 0; 5840 } 5841 5842 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out) 5843 { 5844 u8 val = nla_get_u8(nla); 5845 if (val < min || val > max) 5846 return -EINVAL; 5847 *out = val; 5848 return 0; 5849 } 5850 5851 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out) 5852 { 5853 u16 val = nla_get_u16(nla); 5854 if (val < min || val > max) 5855 return -EINVAL; 5856 *out = val; 5857 return 0; 5858 } 5859 5860 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out) 5861 { 5862 u32 val = nla_get_u32(nla); 5863 if (val < min || val > max) 5864 return -EINVAL; 5865 *out = val; 5866 return 0; 5867 } 5868 5869 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out) 5870 { 5871 s32 val = nla_get_s32(nla); 5872 if (val < min || val > max) 5873 return -EINVAL; 5874 *out = val; 5875 return 0; 5876 } 5877 5878 static int nl80211_check_power_mode(const struct nlattr *nla, 5879 enum nl80211_mesh_power_mode min, 5880 enum nl80211_mesh_power_mode max, 5881 enum nl80211_mesh_power_mode *out) 5882 { 5883 u32 val = nla_get_u32(nla); 5884 if (val < min || val > max) 5885 return -EINVAL; 5886 *out = val; 5887 return 0; 5888 } 5889 5890 static int nl80211_parse_mesh_config(struct genl_info *info, 5891 struct mesh_config *cfg, 5892 u32 *mask_out) 5893 { 5894 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5895 u32 mask = 0; 5896 u16 ht_opmode; 5897 5898 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5899 do { \ 5900 if (tb[attr]) { \ 5901 if (fn(tb[attr], min, max, &cfg->param)) \ 5902 return -EINVAL; \ 5903 mask |= (1 << (attr - 1)); \ 5904 } \ 5905 } while (0) 5906 5907 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5908 return -EINVAL; 5909 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5910 info->attrs[NL80211_ATTR_MESH_CONFIG], 5911 nl80211_meshconf_params_policy, info->extack)) 5912 return -EINVAL; 5913 5914 /* This makes sure that there aren't more than 32 mesh config 5915 * parameters (otherwise our bitfield scheme would not work.) */ 5916 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5917 5918 /* Fill in the params struct */ 5919 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5920 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5921 nl80211_check_u16); 5922 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5923 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5924 nl80211_check_u16); 5925 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5926 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5927 nl80211_check_u16); 5928 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5929 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5930 nl80211_check_u16); 5931 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5932 mask, NL80211_MESHCONF_MAX_RETRIES, 5933 nl80211_check_u8); 5934 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5935 mask, NL80211_MESHCONF_TTL, nl80211_check_u8); 5936 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5937 mask, NL80211_MESHCONF_ELEMENT_TTL, 5938 nl80211_check_u8); 5939 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5940 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5941 nl80211_check_bool); 5942 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5943 1, 255, mask, 5944 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5945 nl80211_check_u32); 5946 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5947 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5948 nl80211_check_u8); 5949 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5950 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5951 nl80211_check_u32); 5952 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5953 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5954 nl80211_check_u16); 5955 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5956 1, 65535, mask, 5957 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5958 nl80211_check_u32); 5959 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5960 1, 65535, mask, 5961 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5962 nl80211_check_u16); 5963 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5964 1, 65535, mask, 5965 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5966 nl80211_check_u16); 5967 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5968 dot11MeshHWMPnetDiameterTraversalTime, 5969 1, 65535, mask, 5970 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5971 nl80211_check_u16); 5972 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5973 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5974 nl80211_check_u8); 5975 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5976 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5977 nl80211_check_u16); 5978 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5979 dot11MeshGateAnnouncementProtocol, 0, 1, 5980 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5981 nl80211_check_bool); 5982 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5983 mask, NL80211_MESHCONF_FORWARDING, 5984 nl80211_check_bool); 5985 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5986 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5987 nl80211_check_s32); 5988 /* 5989 * Check HT operation mode based on 5990 * IEEE 802.11 2012 8.4.2.59 HT Operation element. 5991 */ 5992 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 5993 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 5994 5995 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 5996 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 5997 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 5998 return -EINVAL; 5999 6000 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) && 6001 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6002 return -EINVAL; 6003 6004 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) { 6005 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 6006 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 6007 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT) 6008 return -EINVAL; 6009 break; 6010 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 6011 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 6012 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 6013 return -EINVAL; 6014 break; 6015 } 6016 cfg->ht_opmode = ht_opmode; 6017 mask |= (1 << (NL80211_MESHCONF_HT_OPMODE - 1)); 6018 } 6019 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 6020 1, 65535, mask, 6021 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 6022 nl80211_check_u32); 6023 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 6024 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 6025 nl80211_check_u16); 6026 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 6027 dot11MeshHWMPconfirmationInterval, 6028 1, 65535, mask, 6029 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 6030 nl80211_check_u16); 6031 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 6032 NL80211_MESH_POWER_ACTIVE, 6033 NL80211_MESH_POWER_MAX, 6034 mask, NL80211_MESHCONF_POWER_MODE, 6035 nl80211_check_power_mode); 6036 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 6037 0, 65535, mask, 6038 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16); 6039 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 6040 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 6041 nl80211_check_u32); 6042 if (mask_out) 6043 *mask_out = mask; 6044 6045 return 0; 6046 6047 #undef FILL_IN_MESH_PARAM_IF_SET 6048 } 6049 6050 static int nl80211_parse_mesh_setup(struct genl_info *info, 6051 struct mesh_setup *setup) 6052 { 6053 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6054 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 6055 6056 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 6057 return -EINVAL; 6058 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 6059 info->attrs[NL80211_ATTR_MESH_SETUP], 6060 nl80211_mesh_setup_params_policy, info->extack)) 6061 return -EINVAL; 6062 6063 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 6064 setup->sync_method = 6065 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 6066 IEEE80211_SYNC_METHOD_VENDOR : 6067 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 6068 6069 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 6070 setup->path_sel_proto = 6071 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 6072 IEEE80211_PATH_PROTOCOL_VENDOR : 6073 IEEE80211_PATH_PROTOCOL_HWMP; 6074 6075 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 6076 setup->path_metric = 6077 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 6078 IEEE80211_PATH_METRIC_VENDOR : 6079 IEEE80211_PATH_METRIC_AIRTIME; 6080 6081 if (tb[NL80211_MESH_SETUP_IE]) { 6082 struct nlattr *ieattr = 6083 tb[NL80211_MESH_SETUP_IE]; 6084 if (!is_valid_ie_attr(ieattr)) 6085 return -EINVAL; 6086 setup->ie = nla_data(ieattr); 6087 setup->ie_len = nla_len(ieattr); 6088 } 6089 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 6090 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 6091 return -EINVAL; 6092 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 6093 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 6094 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 6095 if (setup->is_secure) 6096 setup->user_mpm = true; 6097 6098 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 6099 if (!setup->user_mpm) 6100 return -EINVAL; 6101 setup->auth_id = 6102 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 6103 } 6104 6105 return 0; 6106 } 6107 6108 static int nl80211_update_mesh_config(struct sk_buff *skb, 6109 struct genl_info *info) 6110 { 6111 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6112 struct net_device *dev = info->user_ptr[1]; 6113 struct wireless_dev *wdev = dev->ieee80211_ptr; 6114 struct mesh_config cfg; 6115 u32 mask; 6116 int err; 6117 6118 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 6119 return -EOPNOTSUPP; 6120 6121 if (!rdev->ops->update_mesh_config) 6122 return -EOPNOTSUPP; 6123 6124 err = nl80211_parse_mesh_config(info, &cfg, &mask); 6125 if (err) 6126 return err; 6127 6128 wdev_lock(wdev); 6129 if (!wdev->mesh_id_len) 6130 err = -ENOLINK; 6131 6132 if (!err) 6133 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 6134 6135 wdev_unlock(wdev); 6136 6137 return err; 6138 } 6139 6140 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 6141 struct sk_buff *msg) 6142 { 6143 struct nlattr *nl_reg_rules; 6144 unsigned int i; 6145 6146 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 6147 (regdom->dfs_region && 6148 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 6149 goto nla_put_failure; 6150 6151 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 6152 if (!nl_reg_rules) 6153 goto nla_put_failure; 6154 6155 for (i = 0; i < regdom->n_reg_rules; i++) { 6156 struct nlattr *nl_reg_rule; 6157 const struct ieee80211_reg_rule *reg_rule; 6158 const struct ieee80211_freq_range *freq_range; 6159 const struct ieee80211_power_rule *power_rule; 6160 unsigned int max_bandwidth_khz; 6161 6162 reg_rule = ®dom->reg_rules[i]; 6163 freq_range = ®_rule->freq_range; 6164 power_rule = ®_rule->power_rule; 6165 6166 nl_reg_rule = nla_nest_start(msg, i); 6167 if (!nl_reg_rule) 6168 goto nla_put_failure; 6169 6170 max_bandwidth_khz = freq_range->max_bandwidth_khz; 6171 if (!max_bandwidth_khz) 6172 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 6173 reg_rule); 6174 6175 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 6176 reg_rule->flags) || 6177 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 6178 freq_range->start_freq_khz) || 6179 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 6180 freq_range->end_freq_khz) || 6181 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 6182 max_bandwidth_khz) || 6183 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 6184 power_rule->max_antenna_gain) || 6185 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 6186 power_rule->max_eirp) || 6187 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 6188 reg_rule->dfs_cac_ms)) 6189 goto nla_put_failure; 6190 6191 nla_nest_end(msg, nl_reg_rule); 6192 } 6193 6194 nla_nest_end(msg, nl_reg_rules); 6195 return 0; 6196 6197 nla_put_failure: 6198 return -EMSGSIZE; 6199 } 6200 6201 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 6202 { 6203 const struct ieee80211_regdomain *regdom = NULL; 6204 struct cfg80211_registered_device *rdev; 6205 struct wiphy *wiphy = NULL; 6206 struct sk_buff *msg; 6207 void *hdr; 6208 6209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 6210 if (!msg) 6211 return -ENOBUFS; 6212 6213 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 6214 NL80211_CMD_GET_REG); 6215 if (!hdr) 6216 goto put_failure; 6217 6218 if (info->attrs[NL80211_ATTR_WIPHY]) { 6219 bool self_managed; 6220 6221 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 6222 if (IS_ERR(rdev)) { 6223 nlmsg_free(msg); 6224 return PTR_ERR(rdev); 6225 } 6226 6227 wiphy = &rdev->wiphy; 6228 self_managed = wiphy->regulatory_flags & 6229 REGULATORY_WIPHY_SELF_MANAGED; 6230 regdom = get_wiphy_regdom(wiphy); 6231 6232 /* a self-managed-reg device must have a private regdom */ 6233 if (WARN_ON(!regdom && self_managed)) { 6234 nlmsg_free(msg); 6235 return -EINVAL; 6236 } 6237 6238 if (regdom && 6239 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6240 goto nla_put_failure; 6241 } 6242 6243 if (!wiphy && reg_last_request_cell_base() && 6244 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6245 NL80211_USER_REG_HINT_CELL_BASE)) 6246 goto nla_put_failure; 6247 6248 rcu_read_lock(); 6249 6250 if (!regdom) 6251 regdom = rcu_dereference(cfg80211_regdomain); 6252 6253 if (nl80211_put_regdom(regdom, msg)) 6254 goto nla_put_failure_rcu; 6255 6256 rcu_read_unlock(); 6257 6258 genlmsg_end(msg, hdr); 6259 return genlmsg_reply(msg, info); 6260 6261 nla_put_failure_rcu: 6262 rcu_read_unlock(); 6263 nla_put_failure: 6264 genlmsg_cancel(msg, hdr); 6265 put_failure: 6266 nlmsg_free(msg); 6267 return -EMSGSIZE; 6268 } 6269 6270 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 6271 u32 seq, int flags, struct wiphy *wiphy, 6272 const struct ieee80211_regdomain *regdom) 6273 { 6274 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6275 NL80211_CMD_GET_REG); 6276 6277 if (!hdr) 6278 return -1; 6279 6280 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6281 6282 if (nl80211_put_regdom(regdom, msg)) 6283 goto nla_put_failure; 6284 6285 if (!wiphy && reg_last_request_cell_base() && 6286 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 6287 NL80211_USER_REG_HINT_CELL_BASE)) 6288 goto nla_put_failure; 6289 6290 if (wiphy && 6291 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 6292 goto nla_put_failure; 6293 6294 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 6295 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 6296 goto nla_put_failure; 6297 6298 genlmsg_end(msg, hdr); 6299 return 0; 6300 6301 nla_put_failure: 6302 genlmsg_cancel(msg, hdr); 6303 return -EMSGSIZE; 6304 } 6305 6306 static int nl80211_get_reg_dump(struct sk_buff *skb, 6307 struct netlink_callback *cb) 6308 { 6309 const struct ieee80211_regdomain *regdom = NULL; 6310 struct cfg80211_registered_device *rdev; 6311 int err, reg_idx, start = cb->args[2]; 6312 6313 rtnl_lock(); 6314 6315 if (cfg80211_regdomain && start == 0) { 6316 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6317 NLM_F_MULTI, NULL, 6318 rtnl_dereference(cfg80211_regdomain)); 6319 if (err < 0) 6320 goto out_err; 6321 } 6322 6323 /* the global regdom is idx 0 */ 6324 reg_idx = 1; 6325 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 6326 regdom = get_wiphy_regdom(&rdev->wiphy); 6327 if (!regdom) 6328 continue; 6329 6330 if (++reg_idx <= start) 6331 continue; 6332 6333 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 6334 NLM_F_MULTI, &rdev->wiphy, regdom); 6335 if (err < 0) { 6336 reg_idx--; 6337 break; 6338 } 6339 } 6340 6341 cb->args[2] = reg_idx; 6342 err = skb->len; 6343 out_err: 6344 rtnl_unlock(); 6345 return err; 6346 } 6347 6348 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 6349 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 6350 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 6351 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 6352 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 6353 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 6354 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 6355 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 6356 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 6357 }; 6358 6359 static int parse_reg_rule(struct nlattr *tb[], 6360 struct ieee80211_reg_rule *reg_rule) 6361 { 6362 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 6363 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 6364 6365 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 6366 return -EINVAL; 6367 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 6368 return -EINVAL; 6369 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 6370 return -EINVAL; 6371 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 6372 return -EINVAL; 6373 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 6374 return -EINVAL; 6375 6376 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 6377 6378 freq_range->start_freq_khz = 6379 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 6380 freq_range->end_freq_khz = 6381 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 6382 freq_range->max_bandwidth_khz = 6383 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 6384 6385 power_rule->max_eirp = 6386 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 6387 6388 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 6389 power_rule->max_antenna_gain = 6390 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 6391 6392 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 6393 reg_rule->dfs_cac_ms = 6394 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 6395 6396 return 0; 6397 } 6398 6399 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 6400 { 6401 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 6402 struct nlattr *nl_reg_rule; 6403 char *alpha2; 6404 int rem_reg_rules, r; 6405 u32 num_rules = 0, rule_idx = 0, size_of_regd; 6406 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 6407 struct ieee80211_regdomain *rd; 6408 6409 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 6410 return -EINVAL; 6411 6412 if (!info->attrs[NL80211_ATTR_REG_RULES]) 6413 return -EINVAL; 6414 6415 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 6416 6417 if (info->attrs[NL80211_ATTR_DFS_REGION]) 6418 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 6419 6420 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6421 rem_reg_rules) { 6422 num_rules++; 6423 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 6424 return -EINVAL; 6425 } 6426 6427 if (!reg_is_valid_request(alpha2)) 6428 return -EINVAL; 6429 6430 size_of_regd = sizeof(struct ieee80211_regdomain) + 6431 num_rules * sizeof(struct ieee80211_reg_rule); 6432 6433 rd = kzalloc(size_of_regd, GFP_KERNEL); 6434 if (!rd) 6435 return -ENOMEM; 6436 6437 rd->n_reg_rules = num_rules; 6438 rd->alpha2[0] = alpha2[0]; 6439 rd->alpha2[1] = alpha2[1]; 6440 6441 /* 6442 * Disable DFS master mode if the DFS region was 6443 * not supported or known on this kernel. 6444 */ 6445 if (reg_supported_dfs_region(dfs_region)) 6446 rd->dfs_region = dfs_region; 6447 6448 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 6449 rem_reg_rules) { 6450 r = nla_parse_nested(tb, NL80211_REG_RULE_ATTR_MAX, 6451 nl_reg_rule, reg_rule_policy, 6452 info->extack); 6453 if (r) 6454 goto bad_reg; 6455 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 6456 if (r) 6457 goto bad_reg; 6458 6459 rule_idx++; 6460 6461 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 6462 r = -EINVAL; 6463 goto bad_reg; 6464 } 6465 } 6466 6467 /* set_regdom takes ownership of rd */ 6468 return set_regdom(rd, REGD_SOURCE_CRDA); 6469 bad_reg: 6470 kfree(rd); 6471 return r; 6472 } 6473 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 6474 6475 static int validate_scan_freqs(struct nlattr *freqs) 6476 { 6477 struct nlattr *attr1, *attr2; 6478 int n_channels = 0, tmp1, tmp2; 6479 6480 nla_for_each_nested(attr1, freqs, tmp1) 6481 if (nla_len(attr1) != sizeof(u32)) 6482 return 0; 6483 6484 nla_for_each_nested(attr1, freqs, tmp1) { 6485 n_channels++; 6486 /* 6487 * Some hardware has a limited channel list for 6488 * scanning, and it is pretty much nonsensical 6489 * to scan for a channel twice, so disallow that 6490 * and don't require drivers to check that the 6491 * channel list they get isn't longer than what 6492 * they can scan, as long as they can scan all 6493 * the channels they registered at once. 6494 */ 6495 nla_for_each_nested(attr2, freqs, tmp2) 6496 if (attr1 != attr2 && 6497 nla_get_u32(attr1) == nla_get_u32(attr2)) 6498 return 0; 6499 } 6500 6501 return n_channels; 6502 } 6503 6504 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 6505 { 6506 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 6507 } 6508 6509 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 6510 struct cfg80211_bss_selection *bss_select) 6511 { 6512 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 6513 struct nlattr *nest; 6514 int err; 6515 bool found = false; 6516 int i; 6517 6518 /* only process one nested attribute */ 6519 nest = nla_data(nla); 6520 if (!nla_ok(nest, nla_len(nest))) 6521 return -EINVAL; 6522 6523 err = nla_parse_nested(attr, NL80211_BSS_SELECT_ATTR_MAX, nest, 6524 nl80211_bss_select_policy, NULL); 6525 if (err) 6526 return err; 6527 6528 /* only one attribute may be given */ 6529 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 6530 if (attr[i]) { 6531 if (found) 6532 return -EINVAL; 6533 found = true; 6534 } 6535 } 6536 6537 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 6538 6539 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 6540 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 6541 6542 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 6543 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 6544 bss_select->param.band_pref = 6545 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6546 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6547 return -EINVAL; 6548 } 6549 6550 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6551 struct nl80211_bss_select_rssi_adjust *adj_param; 6552 6553 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6554 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6555 bss_select->param.adjust.band = adj_param->band; 6556 bss_select->param.adjust.delta = adj_param->delta; 6557 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6558 return -EINVAL; 6559 } 6560 6561 /* user-space did not provide behaviour attribute */ 6562 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6563 return -EINVAL; 6564 6565 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6566 return -EINVAL; 6567 6568 return 0; 6569 } 6570 6571 static int nl80211_parse_random_mac(struct nlattr **attrs, 6572 u8 *mac_addr, u8 *mac_addr_mask) 6573 { 6574 int i; 6575 6576 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6577 eth_zero_addr(mac_addr); 6578 eth_zero_addr(mac_addr_mask); 6579 mac_addr[0] = 0x2; 6580 mac_addr_mask[0] = 0x3; 6581 6582 return 0; 6583 } 6584 6585 /* need both or none */ 6586 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6587 return -EINVAL; 6588 6589 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6590 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6591 6592 /* don't allow or configure an mcast address */ 6593 if (!is_multicast_ether_addr(mac_addr_mask) || 6594 is_multicast_ether_addr(mac_addr)) 6595 return -EINVAL; 6596 6597 /* 6598 * allow users to pass a MAC address that has bits set outside 6599 * of the mask, but don't bother drivers with having to deal 6600 * with such bits 6601 */ 6602 for (i = 0; i < ETH_ALEN; i++) 6603 mac_addr[i] &= mac_addr_mask[i]; 6604 6605 return 0; 6606 } 6607 6608 static bool cfg80211_off_channel_oper_allowed(struct wireless_dev *wdev) 6609 { 6610 ASSERT_WDEV_LOCK(wdev); 6611 6612 if (!cfg80211_beaconing_iface_active(wdev)) 6613 return true; 6614 6615 if (!(wdev->chandef.chan->flags & IEEE80211_CHAN_RADAR)) 6616 return true; 6617 6618 return regulatory_pre_cac_allowed(wdev->wiphy); 6619 } 6620 6621 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 6622 { 6623 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6624 struct wireless_dev *wdev = info->user_ptr[1]; 6625 struct cfg80211_scan_request *request; 6626 struct nlattr *attr; 6627 struct wiphy *wiphy; 6628 int err, tmp, n_ssids = 0, n_channels, i; 6629 size_t ie_len; 6630 6631 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6632 return -EINVAL; 6633 6634 wiphy = &rdev->wiphy; 6635 6636 if (wdev->iftype == NL80211_IFTYPE_NAN) 6637 return -EOPNOTSUPP; 6638 6639 if (!rdev->ops->scan) 6640 return -EOPNOTSUPP; 6641 6642 if (rdev->scan_req || rdev->scan_msg) { 6643 err = -EBUSY; 6644 goto unlock; 6645 } 6646 6647 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6648 n_channels = validate_scan_freqs( 6649 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6650 if (!n_channels) { 6651 err = -EINVAL; 6652 goto unlock; 6653 } 6654 } else { 6655 n_channels = ieee80211_get_num_supported_channels(wiphy); 6656 } 6657 6658 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 6659 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 6660 n_ssids++; 6661 6662 if (n_ssids > wiphy->max_scan_ssids) { 6663 err = -EINVAL; 6664 goto unlock; 6665 } 6666 6667 if (info->attrs[NL80211_ATTR_IE]) 6668 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6669 else 6670 ie_len = 0; 6671 6672 if (ie_len > wiphy->max_scan_ie_len) { 6673 err = -EINVAL; 6674 goto unlock; 6675 } 6676 6677 request = kzalloc(sizeof(*request) 6678 + sizeof(*request->ssids) * n_ssids 6679 + sizeof(*request->channels) * n_channels 6680 + ie_len, GFP_KERNEL); 6681 if (!request) { 6682 err = -ENOMEM; 6683 goto unlock; 6684 } 6685 6686 if (n_ssids) 6687 request->ssids = (void *)&request->channels[n_channels]; 6688 request->n_ssids = n_ssids; 6689 if (ie_len) { 6690 if (n_ssids) 6691 request->ie = (void *)(request->ssids + n_ssids); 6692 else 6693 request->ie = (void *)(request->channels + n_channels); 6694 } 6695 6696 i = 0; 6697 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6698 /* user specified, bail out if channel not found */ 6699 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 6700 struct ieee80211_channel *chan; 6701 6702 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6703 6704 if (!chan) { 6705 err = -EINVAL; 6706 goto out_free; 6707 } 6708 6709 /* ignore disabled channels */ 6710 if (chan->flags & IEEE80211_CHAN_DISABLED) 6711 continue; 6712 6713 request->channels[i] = chan; 6714 i++; 6715 } 6716 } else { 6717 enum nl80211_band band; 6718 6719 /* all channels */ 6720 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6721 int j; 6722 6723 if (!wiphy->bands[band]) 6724 continue; 6725 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6726 struct ieee80211_channel *chan; 6727 6728 chan = &wiphy->bands[band]->channels[j]; 6729 6730 if (chan->flags & IEEE80211_CHAN_DISABLED) 6731 continue; 6732 6733 request->channels[i] = chan; 6734 i++; 6735 } 6736 } 6737 } 6738 6739 if (!i) { 6740 err = -EINVAL; 6741 goto out_free; 6742 } 6743 6744 request->n_channels = i; 6745 6746 wdev_lock(wdev); 6747 if (!cfg80211_off_channel_oper_allowed(wdev)) { 6748 struct ieee80211_channel *chan; 6749 6750 if (request->n_channels != 1) { 6751 wdev_unlock(wdev); 6752 err = -EBUSY; 6753 goto out_free; 6754 } 6755 6756 chan = request->channels[0]; 6757 if (chan->center_freq != wdev->chandef.chan->center_freq) { 6758 wdev_unlock(wdev); 6759 err = -EBUSY; 6760 goto out_free; 6761 } 6762 } 6763 wdev_unlock(wdev); 6764 6765 i = 0; 6766 if (n_ssids) { 6767 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 6768 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6769 err = -EINVAL; 6770 goto out_free; 6771 } 6772 request->ssids[i].ssid_len = nla_len(attr); 6773 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 6774 i++; 6775 } 6776 } 6777 6778 if (info->attrs[NL80211_ATTR_IE]) { 6779 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6780 memcpy((void *)request->ie, 6781 nla_data(info->attrs[NL80211_ATTR_IE]), 6782 request->ie_len); 6783 } 6784 6785 for (i = 0; i < NUM_NL80211_BANDS; i++) 6786 if (wiphy->bands[i]) 6787 request->rates[i] = 6788 (1 << wiphy->bands[i]->n_bitrates) - 1; 6789 6790 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 6791 nla_for_each_nested(attr, 6792 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 6793 tmp) { 6794 enum nl80211_band band = nla_type(attr); 6795 6796 if (band < 0 || band >= NUM_NL80211_BANDS) { 6797 err = -EINVAL; 6798 goto out_free; 6799 } 6800 6801 if (!wiphy->bands[band]) 6802 continue; 6803 6804 err = ieee80211_get_ratemask(wiphy->bands[band], 6805 nla_data(attr), 6806 nla_len(attr), 6807 &request->rates[band]); 6808 if (err) 6809 goto out_free; 6810 } 6811 } 6812 6813 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 6814 if (!wiphy_ext_feature_isset(wiphy, 6815 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 6816 err = -EOPNOTSUPP; 6817 goto out_free; 6818 } 6819 6820 request->duration = 6821 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 6822 request->duration_mandatory = 6823 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 6824 } 6825 6826 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 6827 request->flags = nla_get_u32( 6828 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 6829 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6830 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6831 err = -EOPNOTSUPP; 6832 goto out_free; 6833 } 6834 6835 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6836 if (!(wiphy->features & 6837 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 6838 err = -EOPNOTSUPP; 6839 goto out_free; 6840 } 6841 6842 if (wdev->current_bss) { 6843 err = -EOPNOTSUPP; 6844 goto out_free; 6845 } 6846 6847 err = nl80211_parse_random_mac(info->attrs, 6848 request->mac_addr, 6849 request->mac_addr_mask); 6850 if (err) 6851 goto out_free; 6852 } 6853 } 6854 6855 request->no_cck = 6856 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 6857 6858 /* Initial implementation used NL80211_ATTR_MAC to set the specific 6859 * BSSID to scan for. This was problematic because that same attribute 6860 * was already used for another purpose (local random MAC address). The 6861 * NL80211_ATTR_BSSID attribute was added to fix this. For backwards 6862 * compatibility with older userspace components, also use the 6863 * NL80211_ATTR_MAC value here if it can be determined to be used for 6864 * the specific BSSID use case instead of the random MAC address 6865 * (NL80211_ATTR_SCAN_FLAGS is used to enable random MAC address use). 6866 */ 6867 if (info->attrs[NL80211_ATTR_BSSID]) 6868 memcpy(request->bssid, 6869 nla_data(info->attrs[NL80211_ATTR_BSSID]), ETH_ALEN); 6870 else if (!(request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) && 6871 info->attrs[NL80211_ATTR_MAC]) 6872 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 6873 ETH_ALEN); 6874 else 6875 eth_broadcast_addr(request->bssid); 6876 6877 request->wdev = wdev; 6878 request->wiphy = &rdev->wiphy; 6879 request->scan_start = jiffies; 6880 6881 rdev->scan_req = request; 6882 err = rdev_scan(rdev, request); 6883 6884 if (!err) { 6885 nl80211_send_scan_start(rdev, wdev); 6886 if (wdev->netdev) 6887 dev_hold(wdev->netdev); 6888 } else { 6889 out_free: 6890 rdev->scan_req = NULL; 6891 kfree(request); 6892 } 6893 6894 unlock: 6895 return err; 6896 } 6897 6898 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 6899 { 6900 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6901 struct wireless_dev *wdev = info->user_ptr[1]; 6902 6903 if (!rdev->ops->abort_scan) 6904 return -EOPNOTSUPP; 6905 6906 if (rdev->scan_msg) 6907 return 0; 6908 6909 if (!rdev->scan_req) 6910 return -ENOENT; 6911 6912 rdev_abort_scan(rdev, wdev); 6913 return 0; 6914 } 6915 6916 static int 6917 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 6918 struct cfg80211_sched_scan_request *request, 6919 struct nlattr **attrs) 6920 { 6921 int tmp, err, i = 0; 6922 struct nlattr *attr; 6923 6924 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6925 u32 interval; 6926 6927 /* 6928 * If scan plans are not specified, 6929 * %NL80211_ATTR_SCHED_SCAN_INTERVAL will be specified. In this 6930 * case one scan plan will be set with the specified scan 6931 * interval and infinite number of iterations. 6932 */ 6933 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 6934 if (!interval) 6935 return -EINVAL; 6936 6937 request->scan_plans[0].interval = 6938 DIV_ROUND_UP(interval, MSEC_PER_SEC); 6939 if (!request->scan_plans[0].interval) 6940 return -EINVAL; 6941 6942 if (request->scan_plans[0].interval > 6943 wiphy->max_sched_scan_plan_interval) 6944 request->scan_plans[0].interval = 6945 wiphy->max_sched_scan_plan_interval; 6946 6947 return 0; 6948 } 6949 6950 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 6951 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 6952 6953 if (WARN_ON(i >= n_plans)) 6954 return -EINVAL; 6955 6956 err = nla_parse_nested(plan, NL80211_SCHED_SCAN_PLAN_MAX, 6957 attr, nl80211_plan_policy, NULL); 6958 if (err) 6959 return err; 6960 6961 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 6962 return -EINVAL; 6963 6964 request->scan_plans[i].interval = 6965 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 6966 if (!request->scan_plans[i].interval || 6967 request->scan_plans[i].interval > 6968 wiphy->max_sched_scan_plan_interval) 6969 return -EINVAL; 6970 6971 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 6972 request->scan_plans[i].iterations = 6973 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 6974 if (!request->scan_plans[i].iterations || 6975 (request->scan_plans[i].iterations > 6976 wiphy->max_sched_scan_plan_iterations)) 6977 return -EINVAL; 6978 } else if (i < n_plans - 1) { 6979 /* 6980 * All scan plans but the last one must specify 6981 * a finite number of iterations 6982 */ 6983 return -EINVAL; 6984 } 6985 6986 i++; 6987 } 6988 6989 /* 6990 * The last scan plan must not specify the number of 6991 * iterations, it is supposed to run infinitely 6992 */ 6993 if (request->scan_plans[n_plans - 1].iterations) 6994 return -EINVAL; 6995 6996 return 0; 6997 } 6998 6999 static struct cfg80211_sched_scan_request * 7000 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 7001 struct nlattr **attrs, int max_match_sets) 7002 { 7003 struct cfg80211_sched_scan_request *request; 7004 struct nlattr *attr; 7005 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 7006 enum nl80211_band band; 7007 size_t ie_len; 7008 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 7009 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 7010 7011 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 7012 return ERR_PTR(-EINVAL); 7013 7014 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7015 n_channels = validate_scan_freqs( 7016 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 7017 if (!n_channels) 7018 return ERR_PTR(-EINVAL); 7019 } else { 7020 n_channels = ieee80211_get_num_supported_channels(wiphy); 7021 } 7022 7023 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 7024 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7025 tmp) 7026 n_ssids++; 7027 7028 if (n_ssids > wiphy->max_sched_scan_ssids) 7029 return ERR_PTR(-EINVAL); 7030 7031 /* 7032 * First, count the number of 'real' matchsets. Due to an issue with 7033 * the old implementation, matchsets containing only the RSSI attribute 7034 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 7035 * RSSI for all matchsets, rather than their own matchset for reporting 7036 * all APs with a strong RSSI. This is needed to be compatible with 7037 * older userspace that treated a matchset with only the RSSI as the 7038 * global RSSI for all other matchsets - if there are other matchsets. 7039 */ 7040 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7041 nla_for_each_nested(attr, 7042 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7043 tmp) { 7044 struct nlattr *rssi; 7045 7046 err = nla_parse_nested(tb, 7047 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7048 attr, nl80211_match_policy, 7049 NULL); 7050 if (err) 7051 return ERR_PTR(err); 7052 7053 /* SSID and BSSID are mutually exclusive */ 7054 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] && 7055 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) 7056 return ERR_PTR(-EINVAL); 7057 7058 /* add other standalone attributes here */ 7059 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID] || 7060 tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]) { 7061 n_match_sets++; 7062 continue; 7063 } 7064 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7065 if (rssi) 7066 default_match_rssi = nla_get_s32(rssi); 7067 } 7068 } 7069 7070 /* However, if there's no other matchset, add the RSSI one */ 7071 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 7072 n_match_sets = 1; 7073 7074 if (n_match_sets > max_match_sets) 7075 return ERR_PTR(-EINVAL); 7076 7077 if (attrs[NL80211_ATTR_IE]) 7078 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 7079 else 7080 ie_len = 0; 7081 7082 if (ie_len > wiphy->max_sched_scan_ie_len) 7083 return ERR_PTR(-EINVAL); 7084 7085 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 7086 /* 7087 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 7088 * each scan plan already specifies its own interval 7089 */ 7090 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7091 return ERR_PTR(-EINVAL); 7092 7093 nla_for_each_nested(attr, 7094 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 7095 n_plans++; 7096 } else { 7097 /* 7098 * The scan interval attribute is kept for backward 7099 * compatibility. If no scan plans are specified and sched scan 7100 * interval is specified, one scan plan will be set with this 7101 * scan interval and infinite number of iterations. 7102 */ 7103 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 7104 return ERR_PTR(-EINVAL); 7105 7106 n_plans = 1; 7107 } 7108 7109 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 7110 return ERR_PTR(-EINVAL); 7111 7112 if (!wiphy_ext_feature_isset( 7113 wiphy, NL80211_EXT_FEATURE_SCHED_SCAN_RELATIVE_RSSI) && 7114 (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI] || 7115 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST])) 7116 return ERR_PTR(-EINVAL); 7117 7118 request = kzalloc(sizeof(*request) 7119 + sizeof(*request->ssids) * n_ssids 7120 + sizeof(*request->match_sets) * n_match_sets 7121 + sizeof(*request->scan_plans) * n_plans 7122 + sizeof(*request->channels) * n_channels 7123 + ie_len, GFP_KERNEL); 7124 if (!request) 7125 return ERR_PTR(-ENOMEM); 7126 7127 if (n_ssids) 7128 request->ssids = (void *)&request->channels[n_channels]; 7129 request->n_ssids = n_ssids; 7130 if (ie_len) { 7131 if (n_ssids) 7132 request->ie = (void *)(request->ssids + n_ssids); 7133 else 7134 request->ie = (void *)(request->channels + n_channels); 7135 } 7136 7137 if (n_match_sets) { 7138 if (request->ie) 7139 request->match_sets = (void *)(request->ie + ie_len); 7140 else if (n_ssids) 7141 request->match_sets = 7142 (void *)(request->ssids + n_ssids); 7143 else 7144 request->match_sets = 7145 (void *)(request->channels + n_channels); 7146 } 7147 request->n_match_sets = n_match_sets; 7148 7149 if (n_match_sets) 7150 request->scan_plans = (void *)(request->match_sets + 7151 n_match_sets); 7152 else if (request->ie) 7153 request->scan_plans = (void *)(request->ie + ie_len); 7154 else if (n_ssids) 7155 request->scan_plans = (void *)(request->ssids + n_ssids); 7156 else 7157 request->scan_plans = (void *)(request->channels + n_channels); 7158 7159 request->n_scan_plans = n_plans; 7160 7161 i = 0; 7162 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 7163 /* user specified, bail out if channel not found */ 7164 nla_for_each_nested(attr, 7165 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 7166 tmp) { 7167 struct ieee80211_channel *chan; 7168 7169 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 7170 7171 if (!chan) { 7172 err = -EINVAL; 7173 goto out_free; 7174 } 7175 7176 /* ignore disabled channels */ 7177 if (chan->flags & IEEE80211_CHAN_DISABLED) 7178 continue; 7179 7180 request->channels[i] = chan; 7181 i++; 7182 } 7183 } else { 7184 /* all channels */ 7185 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7186 int j; 7187 7188 if (!wiphy->bands[band]) 7189 continue; 7190 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 7191 struct ieee80211_channel *chan; 7192 7193 chan = &wiphy->bands[band]->channels[j]; 7194 7195 if (chan->flags & IEEE80211_CHAN_DISABLED) 7196 continue; 7197 7198 request->channels[i] = chan; 7199 i++; 7200 } 7201 } 7202 } 7203 7204 if (!i) { 7205 err = -EINVAL; 7206 goto out_free; 7207 } 7208 7209 request->n_channels = i; 7210 7211 i = 0; 7212 if (n_ssids) { 7213 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 7214 tmp) { 7215 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 7216 err = -EINVAL; 7217 goto out_free; 7218 } 7219 request->ssids[i].ssid_len = nla_len(attr); 7220 memcpy(request->ssids[i].ssid, nla_data(attr), 7221 nla_len(attr)); 7222 i++; 7223 } 7224 } 7225 7226 i = 0; 7227 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 7228 nla_for_each_nested(attr, 7229 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 7230 tmp) { 7231 struct nlattr *ssid, *bssid, *rssi; 7232 7233 err = nla_parse_nested(tb, 7234 NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 7235 attr, nl80211_match_policy, 7236 NULL); 7237 if (err) 7238 goto out_free; 7239 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 7240 bssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_BSSID]; 7241 if (ssid || bssid) { 7242 if (WARN_ON(i >= n_match_sets)) { 7243 /* this indicates a programming error, 7244 * the loop above should have verified 7245 * things properly 7246 */ 7247 err = -EINVAL; 7248 goto out_free; 7249 } 7250 7251 if (ssid) { 7252 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 7253 err = -EINVAL; 7254 goto out_free; 7255 } 7256 memcpy(request->match_sets[i].ssid.ssid, 7257 nla_data(ssid), nla_len(ssid)); 7258 request->match_sets[i].ssid.ssid_len = 7259 nla_len(ssid); 7260 } 7261 if (bssid) { 7262 if (nla_len(bssid) != ETH_ALEN) { 7263 err = -EINVAL; 7264 goto out_free; 7265 } 7266 memcpy(request->match_sets[i].bssid, 7267 nla_data(bssid), ETH_ALEN); 7268 } 7269 7270 /* special attribute - old implementation w/a */ 7271 request->match_sets[i].rssi_thold = 7272 default_match_rssi; 7273 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 7274 if (rssi) 7275 request->match_sets[i].rssi_thold = 7276 nla_get_s32(rssi); 7277 } 7278 i++; 7279 } 7280 7281 /* there was no other matchset, so the RSSI one is alone */ 7282 if (i == 0 && n_match_sets) 7283 request->match_sets[0].rssi_thold = default_match_rssi; 7284 7285 request->min_rssi_thold = INT_MAX; 7286 for (i = 0; i < n_match_sets; i++) 7287 request->min_rssi_thold = 7288 min(request->match_sets[i].rssi_thold, 7289 request->min_rssi_thold); 7290 } else { 7291 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 7292 } 7293 7294 if (ie_len) { 7295 request->ie_len = ie_len; 7296 memcpy((void *)request->ie, 7297 nla_data(attrs[NL80211_ATTR_IE]), 7298 request->ie_len); 7299 } 7300 7301 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 7302 request->flags = nla_get_u32( 7303 attrs[NL80211_ATTR_SCAN_FLAGS]); 7304 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 7305 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 7306 err = -EOPNOTSUPP; 7307 goto out_free; 7308 } 7309 7310 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 7311 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 7312 7313 if (!wdev) /* must be net-detect */ 7314 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 7315 7316 if (!(wiphy->features & flg)) { 7317 err = -EOPNOTSUPP; 7318 goto out_free; 7319 } 7320 7321 if (wdev && wdev->current_bss) { 7322 err = -EOPNOTSUPP; 7323 goto out_free; 7324 } 7325 7326 err = nl80211_parse_random_mac(attrs, request->mac_addr, 7327 request->mac_addr_mask); 7328 if (err) 7329 goto out_free; 7330 } 7331 } 7332 7333 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 7334 request->delay = 7335 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 7336 7337 if (attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]) { 7338 request->relative_rssi = nla_get_s8( 7339 attrs[NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI]); 7340 request->relative_rssi_set = true; 7341 } 7342 7343 if (request->relative_rssi_set && 7344 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]) { 7345 struct nl80211_bss_select_rssi_adjust *rssi_adjust; 7346 7347 rssi_adjust = nla_data( 7348 attrs[NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST]); 7349 request->rssi_adjust.band = rssi_adjust->band; 7350 request->rssi_adjust.delta = rssi_adjust->delta; 7351 if (!is_band_valid(wiphy, request->rssi_adjust.band)) { 7352 err = -EINVAL; 7353 goto out_free; 7354 } 7355 } 7356 7357 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 7358 if (err) 7359 goto out_free; 7360 7361 request->scan_start = jiffies; 7362 7363 return request; 7364 7365 out_free: 7366 kfree(request); 7367 return ERR_PTR(err); 7368 } 7369 7370 static int nl80211_start_sched_scan(struct sk_buff *skb, 7371 struct genl_info *info) 7372 { 7373 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7374 struct net_device *dev = info->user_ptr[1]; 7375 struct wireless_dev *wdev = dev->ieee80211_ptr; 7376 struct cfg80211_sched_scan_request *sched_scan_req; 7377 bool want_multi; 7378 int err; 7379 7380 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_start) 7381 return -EOPNOTSUPP; 7382 7383 want_multi = info->attrs[NL80211_ATTR_SCHED_SCAN_MULTI]; 7384 err = cfg80211_sched_scan_req_possible(rdev, want_multi); 7385 if (err) 7386 return err; 7387 7388 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 7389 info->attrs, 7390 rdev->wiphy.max_match_sets); 7391 7392 err = PTR_ERR_OR_ZERO(sched_scan_req); 7393 if (err) 7394 goto out_err; 7395 7396 /* leave request id zero for legacy request 7397 * or if driver does not support multi-scheduled scan 7398 */ 7399 if (want_multi && rdev->wiphy.max_sched_scan_reqs > 1) { 7400 while (!sched_scan_req->reqid) 7401 sched_scan_req->reqid = rdev->wiphy.cookie_counter++; 7402 } 7403 7404 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 7405 if (err) 7406 goto out_free; 7407 7408 sched_scan_req->dev = dev; 7409 sched_scan_req->wiphy = &rdev->wiphy; 7410 7411 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 7412 sched_scan_req->owner_nlportid = info->snd_portid; 7413 7414 cfg80211_add_sched_scan_req(rdev, sched_scan_req); 7415 7416 nl80211_send_sched_scan(sched_scan_req, NL80211_CMD_START_SCHED_SCAN); 7417 return 0; 7418 7419 out_free: 7420 kfree(sched_scan_req); 7421 out_err: 7422 return err; 7423 } 7424 7425 static int nl80211_stop_sched_scan(struct sk_buff *skb, 7426 struct genl_info *info) 7427 { 7428 struct cfg80211_sched_scan_request *req; 7429 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7430 u64 cookie; 7431 7432 if (!rdev->wiphy.max_sched_scan_reqs || !rdev->ops->sched_scan_stop) 7433 return -EOPNOTSUPP; 7434 7435 if (info->attrs[NL80211_ATTR_COOKIE]) { 7436 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7437 return __cfg80211_stop_sched_scan(rdev, cookie, false); 7438 } 7439 7440 req = list_first_or_null_rcu(&rdev->sched_scan_req_list, 7441 struct cfg80211_sched_scan_request, 7442 list); 7443 if (!req || req->reqid || 7444 (req->owner_nlportid && 7445 req->owner_nlportid != info->snd_portid)) 7446 return -ENOENT; 7447 7448 return cfg80211_stop_sched_scan_req(rdev, req, false); 7449 } 7450 7451 static int nl80211_start_radar_detection(struct sk_buff *skb, 7452 struct genl_info *info) 7453 { 7454 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7455 struct net_device *dev = info->user_ptr[1]; 7456 struct wireless_dev *wdev = dev->ieee80211_ptr; 7457 struct cfg80211_chan_def chandef; 7458 enum nl80211_dfs_regions dfs_region; 7459 unsigned int cac_time_ms; 7460 int err; 7461 7462 dfs_region = reg_get_dfs_region(wdev->wiphy); 7463 if (dfs_region == NL80211_DFS_UNSET) 7464 return -EINVAL; 7465 7466 err = nl80211_parse_chandef(rdev, info, &chandef); 7467 if (err) 7468 return err; 7469 7470 if (netif_carrier_ok(dev)) 7471 return -EBUSY; 7472 7473 if (wdev->cac_started) 7474 return -EBUSY; 7475 7476 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 7477 wdev->iftype); 7478 if (err < 0) 7479 return err; 7480 7481 if (err == 0) 7482 return -EINVAL; 7483 7484 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 7485 return -EINVAL; 7486 7487 if (!rdev->ops->start_radar_detection) 7488 return -EOPNOTSUPP; 7489 7490 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 7491 if (WARN_ON(!cac_time_ms)) 7492 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 7493 7494 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 7495 if (!err) { 7496 wdev->chandef = chandef; 7497 wdev->cac_started = true; 7498 wdev->cac_start_time = jiffies; 7499 wdev->cac_time_ms = cac_time_ms; 7500 } 7501 return err; 7502 } 7503 7504 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 7505 { 7506 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7507 struct net_device *dev = info->user_ptr[1]; 7508 struct wireless_dev *wdev = dev->ieee80211_ptr; 7509 struct cfg80211_csa_settings params; 7510 /* csa_attrs is defined static to avoid waste of stack size - this 7511 * function is called under RTNL lock, so this should not be a problem. 7512 */ 7513 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 7514 int err; 7515 bool need_new_beacon = false; 7516 bool need_handle_dfs_flag = true; 7517 int len, i; 7518 u32 cs_count; 7519 7520 if (!rdev->ops->channel_switch || 7521 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 7522 return -EOPNOTSUPP; 7523 7524 switch (dev->ieee80211_ptr->iftype) { 7525 case NL80211_IFTYPE_AP: 7526 case NL80211_IFTYPE_P2P_GO: 7527 need_new_beacon = true; 7528 /* For all modes except AP the handle_dfs flag needs to be 7529 * supplied to tell the kernel that userspace will handle radar 7530 * events when they happen. Otherwise a switch to a channel 7531 * requiring DFS will be rejected. 7532 */ 7533 need_handle_dfs_flag = false; 7534 7535 /* useless if AP is not running */ 7536 if (!wdev->beacon_interval) 7537 return -ENOTCONN; 7538 break; 7539 case NL80211_IFTYPE_ADHOC: 7540 if (!wdev->ssid_len) 7541 return -ENOTCONN; 7542 break; 7543 case NL80211_IFTYPE_MESH_POINT: 7544 if (!wdev->mesh_id_len) 7545 return -ENOTCONN; 7546 break; 7547 default: 7548 return -EOPNOTSUPP; 7549 } 7550 7551 memset(¶ms, 0, sizeof(params)); 7552 7553 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7554 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 7555 return -EINVAL; 7556 7557 /* only important for AP, IBSS and mesh create IEs internally */ 7558 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 7559 return -EINVAL; 7560 7561 /* Even though the attribute is u32, the specification says 7562 * u8, so let's make sure we don't overflow. 7563 */ 7564 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 7565 if (cs_count > 255) 7566 return -EINVAL; 7567 7568 params.count = cs_count; 7569 7570 if (!need_new_beacon) 7571 goto skip_beacons; 7572 7573 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 7574 if (err) 7575 return err; 7576 7577 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 7578 info->attrs[NL80211_ATTR_CSA_IES], 7579 nl80211_policy, info->extack); 7580 if (err) 7581 return err; 7582 7583 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 7584 if (err) 7585 return err; 7586 7587 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 7588 return -EINVAL; 7589 7590 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7591 if (!len || (len % sizeof(u16))) 7592 return -EINVAL; 7593 7594 params.n_counter_offsets_beacon = len / sizeof(u16); 7595 if (rdev->wiphy.max_num_csa_counters && 7596 (params.n_counter_offsets_beacon > 7597 rdev->wiphy.max_num_csa_counters)) 7598 return -EINVAL; 7599 7600 params.counter_offsets_beacon = 7601 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 7602 7603 /* sanity checks - counters should fit and be the same */ 7604 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 7605 u16 offset = params.counter_offsets_beacon[i]; 7606 7607 if (offset >= params.beacon_csa.tail_len) 7608 return -EINVAL; 7609 7610 if (params.beacon_csa.tail[offset] != params.count) 7611 return -EINVAL; 7612 } 7613 7614 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 7615 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7616 if (!len || (len % sizeof(u16))) 7617 return -EINVAL; 7618 7619 params.n_counter_offsets_presp = len / sizeof(u16); 7620 if (rdev->wiphy.max_num_csa_counters && 7621 (params.n_counter_offsets_presp > 7622 rdev->wiphy.max_num_csa_counters)) 7623 return -EINVAL; 7624 7625 params.counter_offsets_presp = 7626 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 7627 7628 /* sanity checks - counters should fit and be the same */ 7629 for (i = 0; i < params.n_counter_offsets_presp; i++) { 7630 u16 offset = params.counter_offsets_presp[i]; 7631 7632 if (offset >= params.beacon_csa.probe_resp_len) 7633 return -EINVAL; 7634 7635 if (params.beacon_csa.probe_resp[offset] != 7636 params.count) 7637 return -EINVAL; 7638 } 7639 } 7640 7641 skip_beacons: 7642 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 7643 if (err) 7644 return err; 7645 7646 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 7647 wdev->iftype)) 7648 return -EINVAL; 7649 7650 err = cfg80211_chandef_dfs_required(wdev->wiphy, 7651 ¶ms.chandef, 7652 wdev->iftype); 7653 if (err < 0) 7654 return err; 7655 7656 if (err > 0) { 7657 params.radar_required = true; 7658 if (need_handle_dfs_flag && 7659 !nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS])) { 7660 return -EINVAL; 7661 } 7662 } 7663 7664 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 7665 params.block_tx = true; 7666 7667 wdev_lock(wdev); 7668 err = rdev_channel_switch(rdev, dev, ¶ms); 7669 wdev_unlock(wdev); 7670 7671 return err; 7672 } 7673 7674 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 7675 u32 seq, int flags, 7676 struct cfg80211_registered_device *rdev, 7677 struct wireless_dev *wdev, 7678 struct cfg80211_internal_bss *intbss) 7679 { 7680 struct cfg80211_bss *res = &intbss->pub; 7681 const struct cfg80211_bss_ies *ies; 7682 void *hdr; 7683 struct nlattr *bss; 7684 7685 ASSERT_WDEV_LOCK(wdev); 7686 7687 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 7688 NL80211_CMD_NEW_SCAN_RESULTS); 7689 if (!hdr) 7690 return -1; 7691 7692 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 7693 7694 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 7695 goto nla_put_failure; 7696 if (wdev->netdev && 7697 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 7698 goto nla_put_failure; 7699 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 7700 NL80211_ATTR_PAD)) 7701 goto nla_put_failure; 7702 7703 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 7704 if (!bss) 7705 goto nla_put_failure; 7706 if ((!is_zero_ether_addr(res->bssid) && 7707 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 7708 goto nla_put_failure; 7709 7710 rcu_read_lock(); 7711 /* indicate whether we have probe response data or not */ 7712 if (rcu_access_pointer(res->proberesp_ies) && 7713 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 7714 goto fail_unlock_rcu; 7715 7716 /* this pointer prefers to be pointed to probe response data 7717 * but is always valid 7718 */ 7719 ies = rcu_dereference(res->ies); 7720 if (ies) { 7721 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 7722 NL80211_BSS_PAD)) 7723 goto fail_unlock_rcu; 7724 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 7725 ies->len, ies->data)) 7726 goto fail_unlock_rcu; 7727 } 7728 7729 /* and this pointer is always (unless driver didn't know) beacon data */ 7730 ies = rcu_dereference(res->beacon_ies); 7731 if (ies && ies->from_beacon) { 7732 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 7733 NL80211_BSS_PAD)) 7734 goto fail_unlock_rcu; 7735 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 7736 ies->len, ies->data)) 7737 goto fail_unlock_rcu; 7738 } 7739 rcu_read_unlock(); 7740 7741 if (res->beacon_interval && 7742 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 7743 goto nla_put_failure; 7744 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 7745 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 7746 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 7747 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 7748 jiffies_to_msecs(jiffies - intbss->ts))) 7749 goto nla_put_failure; 7750 7751 if (intbss->parent_tsf && 7752 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 7753 intbss->parent_tsf, NL80211_BSS_PAD) || 7754 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 7755 intbss->parent_bssid))) 7756 goto nla_put_failure; 7757 7758 if (intbss->ts_boottime && 7759 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 7760 intbss->ts_boottime, NL80211_BSS_PAD)) 7761 goto nla_put_failure; 7762 7763 switch (rdev->wiphy.signal_type) { 7764 case CFG80211_SIGNAL_TYPE_MBM: 7765 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 7766 goto nla_put_failure; 7767 break; 7768 case CFG80211_SIGNAL_TYPE_UNSPEC: 7769 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 7770 goto nla_put_failure; 7771 break; 7772 default: 7773 break; 7774 } 7775 7776 switch (wdev->iftype) { 7777 case NL80211_IFTYPE_P2P_CLIENT: 7778 case NL80211_IFTYPE_STATION: 7779 if (intbss == wdev->current_bss && 7780 nla_put_u32(msg, NL80211_BSS_STATUS, 7781 NL80211_BSS_STATUS_ASSOCIATED)) 7782 goto nla_put_failure; 7783 break; 7784 case NL80211_IFTYPE_ADHOC: 7785 if (intbss == wdev->current_bss && 7786 nla_put_u32(msg, NL80211_BSS_STATUS, 7787 NL80211_BSS_STATUS_IBSS_JOINED)) 7788 goto nla_put_failure; 7789 break; 7790 default: 7791 break; 7792 } 7793 7794 nla_nest_end(msg, bss); 7795 7796 genlmsg_end(msg, hdr); 7797 return 0; 7798 7799 fail_unlock_rcu: 7800 rcu_read_unlock(); 7801 nla_put_failure: 7802 genlmsg_cancel(msg, hdr); 7803 return -EMSGSIZE; 7804 } 7805 7806 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 7807 { 7808 struct cfg80211_registered_device *rdev; 7809 struct cfg80211_internal_bss *scan; 7810 struct wireless_dev *wdev; 7811 int start = cb->args[2], idx = 0; 7812 int err; 7813 7814 rtnl_lock(); 7815 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7816 if (err) { 7817 rtnl_unlock(); 7818 return err; 7819 } 7820 7821 wdev_lock(wdev); 7822 spin_lock_bh(&rdev->bss_lock); 7823 cfg80211_bss_expire(rdev); 7824 7825 cb->seq = rdev->bss_generation; 7826 7827 list_for_each_entry(scan, &rdev->bss_list, list) { 7828 if (++idx <= start) 7829 continue; 7830 if (nl80211_send_bss(skb, cb, 7831 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7832 rdev, wdev, scan) < 0) { 7833 idx--; 7834 break; 7835 } 7836 } 7837 7838 spin_unlock_bh(&rdev->bss_lock); 7839 wdev_unlock(wdev); 7840 7841 cb->args[2] = idx; 7842 rtnl_unlock(); 7843 7844 return skb->len; 7845 } 7846 7847 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 7848 int flags, struct net_device *dev, 7849 bool allow_radio_stats, 7850 struct survey_info *survey) 7851 { 7852 void *hdr; 7853 struct nlattr *infoattr; 7854 7855 /* skip radio stats if userspace didn't request them */ 7856 if (!survey->channel && !allow_radio_stats) 7857 return 0; 7858 7859 hdr = nl80211hdr_put(msg, portid, seq, flags, 7860 NL80211_CMD_NEW_SURVEY_RESULTS); 7861 if (!hdr) 7862 return -ENOMEM; 7863 7864 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 7865 goto nla_put_failure; 7866 7867 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 7868 if (!infoattr) 7869 goto nla_put_failure; 7870 7871 if (survey->channel && 7872 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 7873 survey->channel->center_freq)) 7874 goto nla_put_failure; 7875 7876 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 7877 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 7878 goto nla_put_failure; 7879 if ((survey->filled & SURVEY_INFO_IN_USE) && 7880 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 7881 goto nla_put_failure; 7882 if ((survey->filled & SURVEY_INFO_TIME) && 7883 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 7884 survey->time, NL80211_SURVEY_INFO_PAD)) 7885 goto nla_put_failure; 7886 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 7887 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 7888 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 7889 goto nla_put_failure; 7890 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 7891 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 7892 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 7893 goto nla_put_failure; 7894 if ((survey->filled & SURVEY_INFO_TIME_RX) && 7895 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 7896 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 7897 goto nla_put_failure; 7898 if ((survey->filled & SURVEY_INFO_TIME_TX) && 7899 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 7900 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 7901 goto nla_put_failure; 7902 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 7903 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 7904 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 7905 goto nla_put_failure; 7906 7907 nla_nest_end(msg, infoattr); 7908 7909 genlmsg_end(msg, hdr); 7910 return 0; 7911 7912 nla_put_failure: 7913 genlmsg_cancel(msg, hdr); 7914 return -EMSGSIZE; 7915 } 7916 7917 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 7918 { 7919 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 7920 struct survey_info survey; 7921 struct cfg80211_registered_device *rdev; 7922 struct wireless_dev *wdev; 7923 int survey_idx = cb->args[2]; 7924 int res; 7925 bool radio_stats; 7926 7927 rtnl_lock(); 7928 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7929 if (res) 7930 goto out_err; 7931 7932 /* prepare_wdev_dump parsed the attributes */ 7933 radio_stats = attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 7934 7935 if (!wdev->netdev) { 7936 res = -EINVAL; 7937 goto out_err; 7938 } 7939 7940 if (!rdev->ops->dump_survey) { 7941 res = -EOPNOTSUPP; 7942 goto out_err; 7943 } 7944 7945 while (1) { 7946 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 7947 if (res == -ENOENT) 7948 break; 7949 if (res) 7950 goto out_err; 7951 7952 /* don't send disabled channels, but do send non-channel data */ 7953 if (survey.channel && 7954 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 7955 survey_idx++; 7956 continue; 7957 } 7958 7959 if (nl80211_send_survey(skb, 7960 NETLINK_CB(cb->skb).portid, 7961 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7962 wdev->netdev, radio_stats, &survey) < 0) 7963 goto out; 7964 survey_idx++; 7965 } 7966 7967 out: 7968 cb->args[2] = survey_idx; 7969 res = skb->len; 7970 out_err: 7971 rtnl_unlock(); 7972 return res; 7973 } 7974 7975 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 7976 { 7977 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 7978 NL80211_WPA_VERSION_2)); 7979 } 7980 7981 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 7982 { 7983 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7984 struct net_device *dev = info->user_ptr[1]; 7985 struct ieee80211_channel *chan; 7986 const u8 *bssid, *ssid, *ie = NULL, *auth_data = NULL; 7987 int err, ssid_len, ie_len = 0, auth_data_len = 0; 7988 enum nl80211_auth_type auth_type; 7989 struct key_parse key; 7990 bool local_state_change; 7991 7992 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7993 return -EINVAL; 7994 7995 if (!info->attrs[NL80211_ATTR_MAC]) 7996 return -EINVAL; 7997 7998 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 7999 return -EINVAL; 8000 8001 if (!info->attrs[NL80211_ATTR_SSID]) 8002 return -EINVAL; 8003 8004 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8005 return -EINVAL; 8006 8007 err = nl80211_parse_key(info, &key); 8008 if (err) 8009 return err; 8010 8011 if (key.idx >= 0) { 8012 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 8013 return -EINVAL; 8014 if (!key.p.key || !key.p.key_len) 8015 return -EINVAL; 8016 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 8017 key.p.key_len != WLAN_KEY_LEN_WEP40) && 8018 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 8019 key.p.key_len != WLAN_KEY_LEN_WEP104)) 8020 return -EINVAL; 8021 if (key.idx > 3) 8022 return -EINVAL; 8023 } else { 8024 key.p.key_len = 0; 8025 key.p.key = NULL; 8026 } 8027 8028 if (key.idx >= 0) { 8029 int i; 8030 bool ok = false; 8031 8032 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 8033 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 8034 ok = true; 8035 break; 8036 } 8037 } 8038 if (!ok) 8039 return -EINVAL; 8040 } 8041 8042 if (!rdev->ops->auth) 8043 return -EOPNOTSUPP; 8044 8045 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8046 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8047 return -EOPNOTSUPP; 8048 8049 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8050 chan = nl80211_get_valid_chan(&rdev->wiphy, 8051 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8052 if (!chan) 8053 return -EINVAL; 8054 8055 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8056 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8057 8058 if (info->attrs[NL80211_ATTR_IE]) { 8059 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8060 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8061 } 8062 8063 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8064 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 8065 return -EINVAL; 8066 8067 if ((auth_type == NL80211_AUTHTYPE_SAE || 8068 auth_type == NL80211_AUTHTYPE_FILS_SK || 8069 auth_type == NL80211_AUTHTYPE_FILS_SK_PFS || 8070 auth_type == NL80211_AUTHTYPE_FILS_PK) && 8071 !info->attrs[NL80211_ATTR_AUTH_DATA]) 8072 return -EINVAL; 8073 8074 if (info->attrs[NL80211_ATTR_AUTH_DATA]) { 8075 if (auth_type != NL80211_AUTHTYPE_SAE && 8076 auth_type != NL80211_AUTHTYPE_FILS_SK && 8077 auth_type != NL80211_AUTHTYPE_FILS_SK_PFS && 8078 auth_type != NL80211_AUTHTYPE_FILS_PK) 8079 return -EINVAL; 8080 auth_data = nla_data(info->attrs[NL80211_ATTR_AUTH_DATA]); 8081 auth_data_len = nla_len(info->attrs[NL80211_ATTR_AUTH_DATA]); 8082 /* need to include at least Auth Transaction and Status Code */ 8083 if (auth_data_len < 4) 8084 return -EINVAL; 8085 } 8086 8087 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8088 8089 /* 8090 * Since we no longer track auth state, ignore 8091 * requests to only change local state. 8092 */ 8093 if (local_state_change) 8094 return 0; 8095 8096 wdev_lock(dev->ieee80211_ptr); 8097 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 8098 ssid, ssid_len, ie, ie_len, 8099 key.p.key, key.p.key_len, key.idx, 8100 auth_data, auth_data_len); 8101 wdev_unlock(dev->ieee80211_ptr); 8102 return err; 8103 } 8104 8105 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 8106 struct genl_info *info, 8107 struct cfg80211_crypto_settings *settings, 8108 int cipher_limit) 8109 { 8110 memset(settings, 0, sizeof(*settings)); 8111 8112 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 8113 8114 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 8115 u16 proto; 8116 8117 proto = nla_get_u16( 8118 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 8119 settings->control_port_ethertype = cpu_to_be16(proto); 8120 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 8121 proto != ETH_P_PAE) 8122 return -EINVAL; 8123 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 8124 settings->control_port_no_encrypt = true; 8125 } else 8126 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 8127 8128 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 8129 void *data; 8130 int len, i; 8131 8132 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8133 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 8134 settings->n_ciphers_pairwise = len / sizeof(u32); 8135 8136 if (len % sizeof(u32)) 8137 return -EINVAL; 8138 8139 if (settings->n_ciphers_pairwise > cipher_limit) 8140 return -EINVAL; 8141 8142 memcpy(settings->ciphers_pairwise, data, len); 8143 8144 for (i = 0; i < settings->n_ciphers_pairwise; i++) 8145 if (!cfg80211_supported_cipher_suite( 8146 &rdev->wiphy, 8147 settings->ciphers_pairwise[i])) 8148 return -EINVAL; 8149 } 8150 8151 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 8152 settings->cipher_group = 8153 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 8154 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 8155 settings->cipher_group)) 8156 return -EINVAL; 8157 } 8158 8159 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 8160 settings->wpa_versions = 8161 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 8162 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 8163 return -EINVAL; 8164 } 8165 8166 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 8167 void *data; 8168 int len; 8169 8170 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 8171 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 8172 settings->n_akm_suites = len / sizeof(u32); 8173 8174 if (len % sizeof(u32)) 8175 return -EINVAL; 8176 8177 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 8178 return -EINVAL; 8179 8180 memcpy(settings->akm_suites, data, len); 8181 } 8182 8183 if (info->attrs[NL80211_ATTR_PMK]) { 8184 if (nla_len(info->attrs[NL80211_ATTR_PMK]) != WLAN_PMK_LEN) 8185 return -EINVAL; 8186 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8187 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_PSK)) 8188 return -EINVAL; 8189 settings->psk = nla_data(info->attrs[NL80211_ATTR_PMK]); 8190 } 8191 8192 return 0; 8193 } 8194 8195 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 8196 { 8197 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8198 struct net_device *dev = info->user_ptr[1]; 8199 struct ieee80211_channel *chan; 8200 struct cfg80211_assoc_request req = {}; 8201 const u8 *bssid, *ssid; 8202 int err, ssid_len = 0; 8203 8204 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8205 return -EINVAL; 8206 8207 if (!info->attrs[NL80211_ATTR_MAC] || 8208 !info->attrs[NL80211_ATTR_SSID] || 8209 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8210 return -EINVAL; 8211 8212 if (!rdev->ops->assoc) 8213 return -EOPNOTSUPP; 8214 8215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8216 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8217 return -EOPNOTSUPP; 8218 8219 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8220 8221 chan = nl80211_get_valid_chan(&rdev->wiphy, 8222 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8223 if (!chan) 8224 return -EINVAL; 8225 8226 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8227 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8228 8229 if (info->attrs[NL80211_ATTR_IE]) { 8230 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8231 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8232 } 8233 8234 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8235 enum nl80211_mfp mfp = 8236 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8237 if (mfp == NL80211_MFP_REQUIRED) 8238 req.use_mfp = true; 8239 else if (mfp != NL80211_MFP_NO) 8240 return -EINVAL; 8241 } 8242 8243 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8244 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8245 8246 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8247 req.flags |= ASSOC_REQ_DISABLE_HT; 8248 8249 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8250 memcpy(&req.ht_capa_mask, 8251 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8252 sizeof(req.ht_capa_mask)); 8253 8254 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8255 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8256 return -EINVAL; 8257 memcpy(&req.ht_capa, 8258 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8259 sizeof(req.ht_capa)); 8260 } 8261 8262 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8263 req.flags |= ASSOC_REQ_DISABLE_VHT; 8264 8265 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8266 memcpy(&req.vht_capa_mask, 8267 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8268 sizeof(req.vht_capa_mask)); 8269 8270 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8271 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8272 return -EINVAL; 8273 memcpy(&req.vht_capa, 8274 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8275 sizeof(req.vht_capa)); 8276 } 8277 8278 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8279 if (!((rdev->wiphy.features & 8280 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8281 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8282 !wiphy_ext_feature_isset(&rdev->wiphy, 8283 NL80211_EXT_FEATURE_RRM)) 8284 return -EINVAL; 8285 req.flags |= ASSOC_REQ_USE_RRM; 8286 } 8287 8288 if (info->attrs[NL80211_ATTR_FILS_KEK]) { 8289 req.fils_kek = nla_data(info->attrs[NL80211_ATTR_FILS_KEK]); 8290 req.fils_kek_len = nla_len(info->attrs[NL80211_ATTR_FILS_KEK]); 8291 if (!info->attrs[NL80211_ATTR_FILS_NONCES]) 8292 return -EINVAL; 8293 req.fils_nonces = 8294 nla_data(info->attrs[NL80211_ATTR_FILS_NONCES]); 8295 } 8296 8297 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 8298 if (!err) { 8299 wdev_lock(dev->ieee80211_ptr); 8300 8301 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 8302 ssid, ssid_len, &req); 8303 8304 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 8305 dev->ieee80211_ptr->conn_owner_nlportid = 8306 info->snd_portid; 8307 memcpy(dev->ieee80211_ptr->disconnect_bssid, 8308 bssid, ETH_ALEN); 8309 } 8310 8311 wdev_unlock(dev->ieee80211_ptr); 8312 } 8313 8314 return err; 8315 } 8316 8317 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 8318 { 8319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8320 struct net_device *dev = info->user_ptr[1]; 8321 const u8 *ie = NULL, *bssid; 8322 int ie_len = 0, err; 8323 u16 reason_code; 8324 bool local_state_change; 8325 8326 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8327 return -EINVAL; 8328 8329 if (!info->attrs[NL80211_ATTR_MAC]) 8330 return -EINVAL; 8331 8332 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8333 return -EINVAL; 8334 8335 if (!rdev->ops->deauth) 8336 return -EOPNOTSUPP; 8337 8338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8339 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8340 return -EOPNOTSUPP; 8341 8342 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8343 8344 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8345 if (reason_code == 0) { 8346 /* Reason Code 0 is reserved */ 8347 return -EINVAL; 8348 } 8349 8350 if (info->attrs[NL80211_ATTR_IE]) { 8351 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8352 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8353 } 8354 8355 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8356 8357 wdev_lock(dev->ieee80211_ptr); 8358 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 8359 local_state_change); 8360 wdev_unlock(dev->ieee80211_ptr); 8361 return err; 8362 } 8363 8364 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 8365 { 8366 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8367 struct net_device *dev = info->user_ptr[1]; 8368 const u8 *ie = NULL, *bssid; 8369 int ie_len = 0, err; 8370 u16 reason_code; 8371 bool local_state_change; 8372 8373 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8374 return -EINVAL; 8375 8376 if (!info->attrs[NL80211_ATTR_MAC]) 8377 return -EINVAL; 8378 8379 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8380 return -EINVAL; 8381 8382 if (!rdev->ops->disassoc) 8383 return -EOPNOTSUPP; 8384 8385 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8386 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8387 return -EOPNOTSUPP; 8388 8389 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8390 8391 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8392 if (reason_code == 0) { 8393 /* Reason Code 0 is reserved */ 8394 return -EINVAL; 8395 } 8396 8397 if (info->attrs[NL80211_ATTR_IE]) { 8398 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8399 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8400 } 8401 8402 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 8403 8404 wdev_lock(dev->ieee80211_ptr); 8405 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 8406 local_state_change); 8407 wdev_unlock(dev->ieee80211_ptr); 8408 return err; 8409 } 8410 8411 static bool 8412 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 8413 int mcast_rate[NUM_NL80211_BANDS], 8414 int rateval) 8415 { 8416 struct wiphy *wiphy = &rdev->wiphy; 8417 bool found = false; 8418 int band, i; 8419 8420 for (band = 0; band < NUM_NL80211_BANDS; band++) { 8421 struct ieee80211_supported_band *sband; 8422 8423 sband = wiphy->bands[band]; 8424 if (!sband) 8425 continue; 8426 8427 for (i = 0; i < sband->n_bitrates; i++) { 8428 if (sband->bitrates[i].bitrate == rateval) { 8429 mcast_rate[band] = i + 1; 8430 found = true; 8431 break; 8432 } 8433 } 8434 } 8435 8436 return found; 8437 } 8438 8439 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 8440 { 8441 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8442 struct net_device *dev = info->user_ptr[1]; 8443 struct cfg80211_ibss_params ibss; 8444 struct wiphy *wiphy; 8445 struct cfg80211_cached_keys *connkeys = NULL; 8446 int err; 8447 8448 memset(&ibss, 0, sizeof(ibss)); 8449 8450 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8451 return -EINVAL; 8452 8453 if (!info->attrs[NL80211_ATTR_SSID] || 8454 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8455 return -EINVAL; 8456 8457 ibss.beacon_interval = 100; 8458 8459 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) 8460 ibss.beacon_interval = 8461 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8462 8463 err = cfg80211_validate_beacon_int(rdev, NL80211_IFTYPE_ADHOC, 8464 ibss.beacon_interval); 8465 if (err) 8466 return err; 8467 8468 if (!rdev->ops->join_ibss) 8469 return -EOPNOTSUPP; 8470 8471 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8472 return -EOPNOTSUPP; 8473 8474 wiphy = &rdev->wiphy; 8475 8476 if (info->attrs[NL80211_ATTR_MAC]) { 8477 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8478 8479 if (!is_valid_ether_addr(ibss.bssid)) 8480 return -EINVAL; 8481 } 8482 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8483 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8484 8485 if (info->attrs[NL80211_ATTR_IE]) { 8486 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8487 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8488 } 8489 8490 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 8491 if (err) 8492 return err; 8493 8494 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 8495 NL80211_IFTYPE_ADHOC)) 8496 return -EINVAL; 8497 8498 switch (ibss.chandef.width) { 8499 case NL80211_CHAN_WIDTH_5: 8500 case NL80211_CHAN_WIDTH_10: 8501 case NL80211_CHAN_WIDTH_20_NOHT: 8502 break; 8503 case NL80211_CHAN_WIDTH_20: 8504 case NL80211_CHAN_WIDTH_40: 8505 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8506 return -EINVAL; 8507 break; 8508 case NL80211_CHAN_WIDTH_80: 8509 case NL80211_CHAN_WIDTH_80P80: 8510 case NL80211_CHAN_WIDTH_160: 8511 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 8512 return -EINVAL; 8513 if (!wiphy_ext_feature_isset(&rdev->wiphy, 8514 NL80211_EXT_FEATURE_VHT_IBSS)) 8515 return -EINVAL; 8516 break; 8517 default: 8518 return -EINVAL; 8519 } 8520 8521 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 8522 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 8523 8524 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8525 u8 *rates = 8526 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8527 int n_rates = 8528 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8529 struct ieee80211_supported_band *sband = 8530 wiphy->bands[ibss.chandef.chan->band]; 8531 8532 err = ieee80211_get_ratemask(sband, rates, n_rates, 8533 &ibss.basic_rates); 8534 if (err) 8535 return err; 8536 } 8537 8538 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8539 memcpy(&ibss.ht_capa_mask, 8540 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8541 sizeof(ibss.ht_capa_mask)); 8542 8543 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8544 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8545 return -EINVAL; 8546 memcpy(&ibss.ht_capa, 8547 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8548 sizeof(ibss.ht_capa)); 8549 } 8550 8551 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8552 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 8553 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8554 return -EINVAL; 8555 8556 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8557 bool no_ht = false; 8558 8559 connkeys = nl80211_parse_connkeys(rdev, 8560 info->attrs[NL80211_ATTR_KEYS], 8561 &no_ht); 8562 if (IS_ERR(connkeys)) 8563 return PTR_ERR(connkeys); 8564 8565 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 8566 no_ht) { 8567 kzfree(connkeys); 8568 return -EINVAL; 8569 } 8570 } 8571 8572 ibss.control_port = 8573 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 8574 8575 ibss.userspace_handles_dfs = 8576 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 8577 8578 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 8579 if (err) 8580 kzfree(connkeys); 8581 return err; 8582 } 8583 8584 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 8585 { 8586 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8587 struct net_device *dev = info->user_ptr[1]; 8588 8589 if (!rdev->ops->leave_ibss) 8590 return -EOPNOTSUPP; 8591 8592 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 8593 return -EOPNOTSUPP; 8594 8595 return cfg80211_leave_ibss(rdev, dev, false); 8596 } 8597 8598 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 8599 { 8600 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8601 struct net_device *dev = info->user_ptr[1]; 8602 int mcast_rate[NUM_NL80211_BANDS]; 8603 u32 nla_rate; 8604 int err; 8605 8606 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 8607 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 8608 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 8609 return -EOPNOTSUPP; 8610 8611 if (!rdev->ops->set_mcast_rate) 8612 return -EOPNOTSUPP; 8613 8614 memset(mcast_rate, 0, sizeof(mcast_rate)); 8615 8616 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 8617 return -EINVAL; 8618 8619 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 8620 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 8621 return -EINVAL; 8622 8623 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 8624 8625 return err; 8626 } 8627 8628 static struct sk_buff * 8629 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 8630 struct wireless_dev *wdev, int approxlen, 8631 u32 portid, u32 seq, enum nl80211_commands cmd, 8632 enum nl80211_attrs attr, 8633 const struct nl80211_vendor_cmd_info *info, 8634 gfp_t gfp) 8635 { 8636 struct sk_buff *skb; 8637 void *hdr; 8638 struct nlattr *data; 8639 8640 skb = nlmsg_new(approxlen + 100, gfp); 8641 if (!skb) 8642 return NULL; 8643 8644 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 8645 if (!hdr) { 8646 kfree_skb(skb); 8647 return NULL; 8648 } 8649 8650 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 8651 goto nla_put_failure; 8652 8653 if (info) { 8654 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 8655 info->vendor_id)) 8656 goto nla_put_failure; 8657 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 8658 info->subcmd)) 8659 goto nla_put_failure; 8660 } 8661 8662 if (wdev) { 8663 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 8664 wdev_id(wdev), NL80211_ATTR_PAD)) 8665 goto nla_put_failure; 8666 if (wdev->netdev && 8667 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 8668 wdev->netdev->ifindex)) 8669 goto nla_put_failure; 8670 } 8671 8672 data = nla_nest_start(skb, attr); 8673 if (!data) 8674 goto nla_put_failure; 8675 8676 ((void **)skb->cb)[0] = rdev; 8677 ((void **)skb->cb)[1] = hdr; 8678 ((void **)skb->cb)[2] = data; 8679 8680 return skb; 8681 8682 nla_put_failure: 8683 kfree_skb(skb); 8684 return NULL; 8685 } 8686 8687 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 8688 struct wireless_dev *wdev, 8689 enum nl80211_commands cmd, 8690 enum nl80211_attrs attr, 8691 int vendor_event_idx, 8692 int approxlen, gfp_t gfp) 8693 { 8694 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 8695 const struct nl80211_vendor_cmd_info *info; 8696 8697 switch (cmd) { 8698 case NL80211_CMD_TESTMODE: 8699 if (WARN_ON(vendor_event_idx != -1)) 8700 return NULL; 8701 info = NULL; 8702 break; 8703 case NL80211_CMD_VENDOR: 8704 if (WARN_ON(vendor_event_idx < 0 || 8705 vendor_event_idx >= wiphy->n_vendor_events)) 8706 return NULL; 8707 info = &wiphy->vendor_events[vendor_event_idx]; 8708 break; 8709 default: 8710 WARN_ON(1); 8711 return NULL; 8712 } 8713 8714 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 8715 cmd, attr, info, gfp); 8716 } 8717 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 8718 8719 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 8720 { 8721 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 8722 void *hdr = ((void **)skb->cb)[1]; 8723 struct nlattr *data = ((void **)skb->cb)[2]; 8724 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 8725 8726 /* clear CB data for netlink core to own from now on */ 8727 memset(skb->cb, 0, sizeof(skb->cb)); 8728 8729 nla_nest_end(skb, data); 8730 genlmsg_end(skb, hdr); 8731 8732 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 8733 mcgrp = NL80211_MCGRP_VENDOR; 8734 8735 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 8736 mcgrp, gfp); 8737 } 8738 EXPORT_SYMBOL(__cfg80211_send_event_skb); 8739 8740 #ifdef CONFIG_NL80211_TESTMODE 8741 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 8742 { 8743 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8744 struct wireless_dev *wdev = 8745 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 8746 int err; 8747 8748 if (!rdev->ops->testmode_cmd) 8749 return -EOPNOTSUPP; 8750 8751 if (IS_ERR(wdev)) { 8752 err = PTR_ERR(wdev); 8753 if (err != -EINVAL) 8754 return err; 8755 wdev = NULL; 8756 } else if (wdev->wiphy != &rdev->wiphy) { 8757 return -EINVAL; 8758 } 8759 8760 if (!info->attrs[NL80211_ATTR_TESTDATA]) 8761 return -EINVAL; 8762 8763 rdev->cur_cmd_info = info; 8764 err = rdev_testmode_cmd(rdev, wdev, 8765 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 8766 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 8767 rdev->cur_cmd_info = NULL; 8768 8769 return err; 8770 } 8771 8772 static int nl80211_testmode_dump(struct sk_buff *skb, 8773 struct netlink_callback *cb) 8774 { 8775 struct cfg80211_registered_device *rdev; 8776 int err; 8777 long phy_idx; 8778 void *data = NULL; 8779 int data_len = 0; 8780 8781 rtnl_lock(); 8782 8783 if (cb->args[0]) { 8784 /* 8785 * 0 is a valid index, but not valid for args[0], 8786 * so we need to offset by 1. 8787 */ 8788 phy_idx = cb->args[0] - 1; 8789 8790 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 8791 if (!rdev) { 8792 err = -ENOENT; 8793 goto out_err; 8794 } 8795 } else { 8796 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 8797 8798 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 8799 attrbuf, nl80211_fam.maxattr, 8800 nl80211_policy, NULL); 8801 if (err) 8802 goto out_err; 8803 8804 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 8805 if (IS_ERR(rdev)) { 8806 err = PTR_ERR(rdev); 8807 goto out_err; 8808 } 8809 phy_idx = rdev->wiphy_idx; 8810 8811 if (attrbuf[NL80211_ATTR_TESTDATA]) 8812 cb->args[1] = (long)attrbuf[NL80211_ATTR_TESTDATA]; 8813 } 8814 8815 if (cb->args[1]) { 8816 data = nla_data((void *)cb->args[1]); 8817 data_len = nla_len((void *)cb->args[1]); 8818 } 8819 8820 if (!rdev->ops->testmode_dump) { 8821 err = -EOPNOTSUPP; 8822 goto out_err; 8823 } 8824 8825 while (1) { 8826 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 8827 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8828 NL80211_CMD_TESTMODE); 8829 struct nlattr *tmdata; 8830 8831 if (!hdr) 8832 break; 8833 8834 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 8835 genlmsg_cancel(skb, hdr); 8836 break; 8837 } 8838 8839 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 8840 if (!tmdata) { 8841 genlmsg_cancel(skb, hdr); 8842 break; 8843 } 8844 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 8845 nla_nest_end(skb, tmdata); 8846 8847 if (err == -ENOBUFS || err == -ENOENT) { 8848 genlmsg_cancel(skb, hdr); 8849 break; 8850 } else if (err) { 8851 genlmsg_cancel(skb, hdr); 8852 goto out_err; 8853 } 8854 8855 genlmsg_end(skb, hdr); 8856 } 8857 8858 err = skb->len; 8859 /* see above */ 8860 cb->args[0] = phy_idx + 1; 8861 out_err: 8862 rtnl_unlock(); 8863 return err; 8864 } 8865 #endif 8866 8867 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 8868 { 8869 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8870 struct net_device *dev = info->user_ptr[1]; 8871 struct cfg80211_connect_params connect; 8872 struct wiphy *wiphy; 8873 struct cfg80211_cached_keys *connkeys = NULL; 8874 int err; 8875 8876 memset(&connect, 0, sizeof(connect)); 8877 8878 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8879 return -EINVAL; 8880 8881 if (!info->attrs[NL80211_ATTR_SSID] || 8882 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8883 return -EINVAL; 8884 8885 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 8886 connect.auth_type = 8887 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8888 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 8889 NL80211_CMD_CONNECT)) 8890 return -EINVAL; 8891 } else 8892 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 8893 8894 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 8895 8896 if (info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS] && 8897 !wiphy_ext_feature_isset(&rdev->wiphy, 8898 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 8899 return -EINVAL; 8900 connect.want_1x = info->attrs[NL80211_ATTR_WANT_1X_4WAY_HS]; 8901 8902 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 8903 NL80211_MAX_NR_CIPHER_SUITES); 8904 if (err) 8905 return err; 8906 8907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8908 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8909 return -EOPNOTSUPP; 8910 8911 wiphy = &rdev->wiphy; 8912 8913 connect.bg_scan_period = -1; 8914 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 8915 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 8916 connect.bg_scan_period = 8917 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 8918 } 8919 8920 if (info->attrs[NL80211_ATTR_MAC]) 8921 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8922 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 8923 connect.bssid_hint = 8924 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 8925 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8926 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8927 8928 if (info->attrs[NL80211_ATTR_IE]) { 8929 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8930 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8931 } 8932 8933 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8934 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8935 if (connect.mfp != NL80211_MFP_REQUIRED && 8936 connect.mfp != NL80211_MFP_NO) 8937 return -EINVAL; 8938 } else { 8939 connect.mfp = NL80211_MFP_NO; 8940 } 8941 8942 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8943 connect.prev_bssid = 8944 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8945 8946 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8947 connect.channel = nl80211_get_valid_chan( 8948 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8949 if (!connect.channel) 8950 return -EINVAL; 8951 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 8952 connect.channel_hint = nl80211_get_valid_chan( 8953 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 8954 if (!connect.channel_hint) 8955 return -EINVAL; 8956 } 8957 8958 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8959 connkeys = nl80211_parse_connkeys(rdev, 8960 info->attrs[NL80211_ATTR_KEYS], NULL); 8961 if (IS_ERR(connkeys)) 8962 return PTR_ERR(connkeys); 8963 } 8964 8965 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8966 connect.flags |= ASSOC_REQ_DISABLE_HT; 8967 8968 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8969 memcpy(&connect.ht_capa_mask, 8970 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8971 sizeof(connect.ht_capa_mask)); 8972 8973 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8974 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 8975 kzfree(connkeys); 8976 return -EINVAL; 8977 } 8978 memcpy(&connect.ht_capa, 8979 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8980 sizeof(connect.ht_capa)); 8981 } 8982 8983 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8984 connect.flags |= ASSOC_REQ_DISABLE_VHT; 8985 8986 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8987 memcpy(&connect.vht_capa_mask, 8988 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8989 sizeof(connect.vht_capa_mask)); 8990 8991 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8992 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 8993 kzfree(connkeys); 8994 return -EINVAL; 8995 } 8996 memcpy(&connect.vht_capa, 8997 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8998 sizeof(connect.vht_capa)); 8999 } 9000 9001 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 9002 if (!((rdev->wiphy.features & 9003 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 9004 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 9005 !wiphy_ext_feature_isset(&rdev->wiphy, 9006 NL80211_EXT_FEATURE_RRM)) { 9007 kzfree(connkeys); 9008 return -EINVAL; 9009 } 9010 connect.flags |= ASSOC_REQ_USE_RRM; 9011 } 9012 9013 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 9014 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 9015 kzfree(connkeys); 9016 return -EOPNOTSUPP; 9017 } 9018 9019 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 9020 /* bss selection makes no sense if bssid is set */ 9021 if (connect.bssid) { 9022 kzfree(connkeys); 9023 return -EINVAL; 9024 } 9025 9026 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 9027 wiphy, &connect.bss_select); 9028 if (err) { 9029 kzfree(connkeys); 9030 return err; 9031 } 9032 } 9033 9034 if (wiphy_ext_feature_isset(&rdev->wiphy, 9035 NL80211_EXT_FEATURE_FILS_SK_OFFLOAD) && 9036 info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] && 9037 info->attrs[NL80211_ATTR_FILS_ERP_REALM] && 9038 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] && 9039 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9040 connect.fils_erp_username = 9041 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9042 connect.fils_erp_username_len = 9043 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_USERNAME]); 9044 connect.fils_erp_realm = 9045 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9046 connect.fils_erp_realm_len = 9047 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_REALM]); 9048 connect.fils_erp_next_seq_num = 9049 nla_get_u16( 9050 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM]); 9051 connect.fils_erp_rrk = 9052 nla_data(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9053 connect.fils_erp_rrk_len = 9054 nla_len(info->attrs[NL80211_ATTR_FILS_ERP_RRK]); 9055 } else if (info->attrs[NL80211_ATTR_FILS_ERP_USERNAME] || 9056 info->attrs[NL80211_ATTR_FILS_ERP_REALM] || 9057 info->attrs[NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM] || 9058 info->attrs[NL80211_ATTR_FILS_ERP_RRK]) { 9059 kzfree(connkeys); 9060 return -EINVAL; 9061 } 9062 9063 wdev_lock(dev->ieee80211_ptr); 9064 9065 err = cfg80211_connect(rdev, dev, &connect, connkeys, 9066 connect.prev_bssid); 9067 if (err) 9068 kzfree(connkeys); 9069 9070 if (!err && info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 9071 dev->ieee80211_ptr->conn_owner_nlportid = info->snd_portid; 9072 if (connect.bssid) 9073 memcpy(dev->ieee80211_ptr->disconnect_bssid, 9074 connect.bssid, ETH_ALEN); 9075 else 9076 memset(dev->ieee80211_ptr->disconnect_bssid, 9077 0, ETH_ALEN); 9078 } 9079 9080 wdev_unlock(dev->ieee80211_ptr); 9081 9082 return err; 9083 } 9084 9085 static int nl80211_update_connect_params(struct sk_buff *skb, 9086 struct genl_info *info) 9087 { 9088 struct cfg80211_connect_params connect = {}; 9089 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9090 struct net_device *dev = info->user_ptr[1]; 9091 struct wireless_dev *wdev = dev->ieee80211_ptr; 9092 u32 changed = 0; 9093 int ret; 9094 9095 if (!rdev->ops->update_connect_params) 9096 return -EOPNOTSUPP; 9097 9098 if (info->attrs[NL80211_ATTR_IE]) { 9099 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9100 return -EINVAL; 9101 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9102 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9103 changed |= UPDATE_ASSOC_IES; 9104 } 9105 9106 wdev_lock(dev->ieee80211_ptr); 9107 if (!wdev->current_bss) 9108 ret = -ENOLINK; 9109 else 9110 ret = rdev_update_connect_params(rdev, dev, &connect, changed); 9111 wdev_unlock(dev->ieee80211_ptr); 9112 9113 return ret; 9114 } 9115 9116 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 9117 { 9118 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9119 struct net_device *dev = info->user_ptr[1]; 9120 u16 reason; 9121 int ret; 9122 9123 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 9124 reason = WLAN_REASON_DEAUTH_LEAVING; 9125 else 9126 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 9127 9128 if (reason == 0) 9129 return -EINVAL; 9130 9131 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9132 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9133 return -EOPNOTSUPP; 9134 9135 wdev_lock(dev->ieee80211_ptr); 9136 ret = cfg80211_disconnect(rdev, dev, reason, true); 9137 wdev_unlock(dev->ieee80211_ptr); 9138 return ret; 9139 } 9140 9141 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 9142 { 9143 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9144 struct net *net; 9145 int err; 9146 9147 if (info->attrs[NL80211_ATTR_PID]) { 9148 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 9149 9150 net = get_net_ns_by_pid(pid); 9151 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 9152 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 9153 9154 net = get_net_ns_by_fd(fd); 9155 } else { 9156 return -EINVAL; 9157 } 9158 9159 if (IS_ERR(net)) 9160 return PTR_ERR(net); 9161 9162 err = 0; 9163 9164 /* check if anything to do */ 9165 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 9166 err = cfg80211_switch_netns(rdev, net); 9167 9168 put_net(net); 9169 return err; 9170 } 9171 9172 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 9173 { 9174 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9175 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 9176 struct cfg80211_pmksa *pmksa) = NULL; 9177 struct net_device *dev = info->user_ptr[1]; 9178 struct cfg80211_pmksa pmksa; 9179 9180 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 9181 9182 if (!info->attrs[NL80211_ATTR_PMKID]) 9183 return -EINVAL; 9184 9185 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 9186 9187 if (info->attrs[NL80211_ATTR_MAC]) { 9188 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 9189 } else if (info->attrs[NL80211_ATTR_SSID] && 9190 info->attrs[NL80211_ATTR_FILS_CACHE_ID] && 9191 (info->genlhdr->cmd == NL80211_CMD_DEL_PMKSA || 9192 info->attrs[NL80211_ATTR_PMK])) { 9193 pmksa.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 9194 pmksa.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 9195 pmksa.cache_id = 9196 nla_data(info->attrs[NL80211_ATTR_FILS_CACHE_ID]); 9197 } else { 9198 return -EINVAL; 9199 } 9200 if (info->attrs[NL80211_ATTR_PMK]) { 9201 pmksa.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 9202 pmksa.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 9203 } 9204 9205 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9206 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9207 return -EOPNOTSUPP; 9208 9209 switch (info->genlhdr->cmd) { 9210 case NL80211_CMD_SET_PMKSA: 9211 rdev_ops = rdev->ops->set_pmksa; 9212 break; 9213 case NL80211_CMD_DEL_PMKSA: 9214 rdev_ops = rdev->ops->del_pmksa; 9215 break; 9216 default: 9217 WARN_ON(1); 9218 break; 9219 } 9220 9221 if (!rdev_ops) 9222 return -EOPNOTSUPP; 9223 9224 return rdev_ops(&rdev->wiphy, dev, &pmksa); 9225 } 9226 9227 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 9228 { 9229 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9230 struct net_device *dev = info->user_ptr[1]; 9231 9232 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 9233 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 9234 return -EOPNOTSUPP; 9235 9236 if (!rdev->ops->flush_pmksa) 9237 return -EOPNOTSUPP; 9238 9239 return rdev_flush_pmksa(rdev, dev); 9240 } 9241 9242 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 9243 { 9244 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9245 struct net_device *dev = info->user_ptr[1]; 9246 u8 action_code, dialog_token; 9247 u32 peer_capability = 0; 9248 u16 status_code; 9249 u8 *peer; 9250 bool initiator; 9251 9252 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9253 !rdev->ops->tdls_mgmt) 9254 return -EOPNOTSUPP; 9255 9256 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 9257 !info->attrs[NL80211_ATTR_STATUS_CODE] || 9258 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 9259 !info->attrs[NL80211_ATTR_IE] || 9260 !info->attrs[NL80211_ATTR_MAC]) 9261 return -EINVAL; 9262 9263 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9264 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 9265 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 9266 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 9267 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 9268 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 9269 peer_capability = 9270 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 9271 9272 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 9273 dialog_token, status_code, peer_capability, 9274 initiator, 9275 nla_data(info->attrs[NL80211_ATTR_IE]), 9276 nla_len(info->attrs[NL80211_ATTR_IE])); 9277 } 9278 9279 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 9280 { 9281 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9282 struct net_device *dev = info->user_ptr[1]; 9283 enum nl80211_tdls_operation operation; 9284 u8 *peer; 9285 9286 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 9287 !rdev->ops->tdls_oper) 9288 return -EOPNOTSUPP; 9289 9290 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 9291 !info->attrs[NL80211_ATTR_MAC]) 9292 return -EINVAL; 9293 9294 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 9295 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9296 9297 return rdev_tdls_oper(rdev, dev, peer, operation); 9298 } 9299 9300 static int nl80211_remain_on_channel(struct sk_buff *skb, 9301 struct genl_info *info) 9302 { 9303 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9304 struct wireless_dev *wdev = info->user_ptr[1]; 9305 struct cfg80211_chan_def chandef; 9306 const struct cfg80211_chan_def *compat_chandef; 9307 struct sk_buff *msg; 9308 void *hdr; 9309 u64 cookie; 9310 u32 duration; 9311 int err; 9312 9313 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 9314 !info->attrs[NL80211_ATTR_DURATION]) 9315 return -EINVAL; 9316 9317 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9318 9319 if (!rdev->ops->remain_on_channel || 9320 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 9321 return -EOPNOTSUPP; 9322 9323 /* 9324 * We should be on that channel for at least a minimum amount of 9325 * time (10ms) but no longer than the driver supports. 9326 */ 9327 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9328 duration > rdev->wiphy.max_remain_on_channel_duration) 9329 return -EINVAL; 9330 9331 err = nl80211_parse_chandef(rdev, info, &chandef); 9332 if (err) 9333 return err; 9334 9335 wdev_lock(wdev); 9336 if (!cfg80211_off_channel_oper_allowed(wdev) && 9337 !cfg80211_chandef_identical(&wdev->chandef, &chandef)) { 9338 compat_chandef = cfg80211_chandef_compatible(&wdev->chandef, 9339 &chandef); 9340 if (compat_chandef != &chandef) { 9341 wdev_unlock(wdev); 9342 return -EBUSY; 9343 } 9344 } 9345 wdev_unlock(wdev); 9346 9347 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9348 if (!msg) 9349 return -ENOMEM; 9350 9351 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9352 NL80211_CMD_REMAIN_ON_CHANNEL); 9353 if (!hdr) { 9354 err = -ENOBUFS; 9355 goto free_msg; 9356 } 9357 9358 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 9359 duration, &cookie); 9360 9361 if (err) 9362 goto free_msg; 9363 9364 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9365 NL80211_ATTR_PAD)) 9366 goto nla_put_failure; 9367 9368 genlmsg_end(msg, hdr); 9369 9370 return genlmsg_reply(msg, info); 9371 9372 nla_put_failure: 9373 err = -ENOBUFS; 9374 free_msg: 9375 nlmsg_free(msg); 9376 return err; 9377 } 9378 9379 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 9380 struct genl_info *info) 9381 { 9382 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9383 struct wireless_dev *wdev = info->user_ptr[1]; 9384 u64 cookie; 9385 9386 if (!info->attrs[NL80211_ATTR_COOKIE]) 9387 return -EINVAL; 9388 9389 if (!rdev->ops->cancel_remain_on_channel) 9390 return -EOPNOTSUPP; 9391 9392 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9393 9394 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 9395 } 9396 9397 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 9398 struct genl_info *info) 9399 { 9400 struct cfg80211_bitrate_mask mask; 9401 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9402 struct net_device *dev = info->user_ptr[1]; 9403 int err; 9404 9405 if (!rdev->ops->set_bitrate_mask) 9406 return -EOPNOTSUPP; 9407 9408 err = nl80211_parse_tx_bitrate_mask(info, &mask); 9409 if (err) 9410 return err; 9411 9412 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 9413 } 9414 9415 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 9416 { 9417 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9418 struct wireless_dev *wdev = info->user_ptr[1]; 9419 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 9420 9421 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 9422 return -EINVAL; 9423 9424 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 9425 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 9426 9427 switch (wdev->iftype) { 9428 case NL80211_IFTYPE_STATION: 9429 case NL80211_IFTYPE_ADHOC: 9430 case NL80211_IFTYPE_P2P_CLIENT: 9431 case NL80211_IFTYPE_AP: 9432 case NL80211_IFTYPE_AP_VLAN: 9433 case NL80211_IFTYPE_MESH_POINT: 9434 case NL80211_IFTYPE_P2P_GO: 9435 case NL80211_IFTYPE_P2P_DEVICE: 9436 break; 9437 case NL80211_IFTYPE_NAN: 9438 default: 9439 return -EOPNOTSUPP; 9440 } 9441 9442 /* not much point in registering if we can't reply */ 9443 if (!rdev->ops->mgmt_tx) 9444 return -EOPNOTSUPP; 9445 9446 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 9447 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 9448 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 9449 } 9450 9451 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 9452 { 9453 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9454 struct wireless_dev *wdev = info->user_ptr[1]; 9455 struct cfg80211_chan_def chandef; 9456 int err; 9457 void *hdr = NULL; 9458 u64 cookie; 9459 struct sk_buff *msg = NULL; 9460 struct cfg80211_mgmt_tx_params params = { 9461 .dont_wait_for_ack = 9462 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 9463 }; 9464 9465 if (!info->attrs[NL80211_ATTR_FRAME]) 9466 return -EINVAL; 9467 9468 if (!rdev->ops->mgmt_tx) 9469 return -EOPNOTSUPP; 9470 9471 switch (wdev->iftype) { 9472 case NL80211_IFTYPE_P2P_DEVICE: 9473 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 9474 return -EINVAL; 9475 case NL80211_IFTYPE_STATION: 9476 case NL80211_IFTYPE_ADHOC: 9477 case NL80211_IFTYPE_P2P_CLIENT: 9478 case NL80211_IFTYPE_AP: 9479 case NL80211_IFTYPE_AP_VLAN: 9480 case NL80211_IFTYPE_MESH_POINT: 9481 case NL80211_IFTYPE_P2P_GO: 9482 break; 9483 case NL80211_IFTYPE_NAN: 9484 default: 9485 return -EOPNOTSUPP; 9486 } 9487 9488 if (info->attrs[NL80211_ATTR_DURATION]) { 9489 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9490 return -EINVAL; 9491 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 9492 9493 /* 9494 * We should wait on the channel for at least a minimum amount 9495 * of time (10ms) but no longer than the driver supports. 9496 */ 9497 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 9498 params.wait > rdev->wiphy.max_remain_on_channel_duration) 9499 return -EINVAL; 9500 } 9501 9502 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 9503 9504 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 9505 return -EINVAL; 9506 9507 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 9508 9509 /* get the channel if any has been specified, otherwise pass NULL to 9510 * the driver. The latter will use the current one 9511 */ 9512 chandef.chan = NULL; 9513 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9514 err = nl80211_parse_chandef(rdev, info, &chandef); 9515 if (err) 9516 return err; 9517 } 9518 9519 if (!chandef.chan && params.offchan) 9520 return -EINVAL; 9521 9522 wdev_lock(wdev); 9523 if (params.offchan && !cfg80211_off_channel_oper_allowed(wdev)) { 9524 wdev_unlock(wdev); 9525 return -EBUSY; 9526 } 9527 wdev_unlock(wdev); 9528 9529 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 9530 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 9531 9532 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 9533 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9534 int i; 9535 9536 if (len % sizeof(u16)) 9537 return -EINVAL; 9538 9539 params.n_csa_offsets = len / sizeof(u16); 9540 params.csa_offsets = 9541 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 9542 9543 /* check that all the offsets fit the frame */ 9544 for (i = 0; i < params.n_csa_offsets; i++) { 9545 if (params.csa_offsets[i] >= params.len) 9546 return -EINVAL; 9547 } 9548 } 9549 9550 if (!params.dont_wait_for_ack) { 9551 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9552 if (!msg) 9553 return -ENOMEM; 9554 9555 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9556 NL80211_CMD_FRAME); 9557 if (!hdr) { 9558 err = -ENOBUFS; 9559 goto free_msg; 9560 } 9561 } 9562 9563 params.chan = chandef.chan; 9564 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 9565 if (err) 9566 goto free_msg; 9567 9568 if (msg) { 9569 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 9570 NL80211_ATTR_PAD)) 9571 goto nla_put_failure; 9572 9573 genlmsg_end(msg, hdr); 9574 return genlmsg_reply(msg, info); 9575 } 9576 9577 return 0; 9578 9579 nla_put_failure: 9580 err = -ENOBUFS; 9581 free_msg: 9582 nlmsg_free(msg); 9583 return err; 9584 } 9585 9586 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 9587 { 9588 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9589 struct wireless_dev *wdev = info->user_ptr[1]; 9590 u64 cookie; 9591 9592 if (!info->attrs[NL80211_ATTR_COOKIE]) 9593 return -EINVAL; 9594 9595 if (!rdev->ops->mgmt_tx_cancel_wait) 9596 return -EOPNOTSUPP; 9597 9598 switch (wdev->iftype) { 9599 case NL80211_IFTYPE_STATION: 9600 case NL80211_IFTYPE_ADHOC: 9601 case NL80211_IFTYPE_P2P_CLIENT: 9602 case NL80211_IFTYPE_AP: 9603 case NL80211_IFTYPE_AP_VLAN: 9604 case NL80211_IFTYPE_P2P_GO: 9605 case NL80211_IFTYPE_P2P_DEVICE: 9606 break; 9607 case NL80211_IFTYPE_NAN: 9608 default: 9609 return -EOPNOTSUPP; 9610 } 9611 9612 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9613 9614 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 9615 } 9616 9617 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 9618 { 9619 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9620 struct wireless_dev *wdev; 9621 struct net_device *dev = info->user_ptr[1]; 9622 u8 ps_state; 9623 bool state; 9624 int err; 9625 9626 if (!info->attrs[NL80211_ATTR_PS_STATE]) 9627 return -EINVAL; 9628 9629 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 9630 9631 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 9632 return -EINVAL; 9633 9634 wdev = dev->ieee80211_ptr; 9635 9636 if (!rdev->ops->set_power_mgmt) 9637 return -EOPNOTSUPP; 9638 9639 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 9640 9641 if (state == wdev->ps) 9642 return 0; 9643 9644 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 9645 if (!err) 9646 wdev->ps = state; 9647 return err; 9648 } 9649 9650 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 9651 { 9652 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9653 enum nl80211_ps_state ps_state; 9654 struct wireless_dev *wdev; 9655 struct net_device *dev = info->user_ptr[1]; 9656 struct sk_buff *msg; 9657 void *hdr; 9658 int err; 9659 9660 wdev = dev->ieee80211_ptr; 9661 9662 if (!rdev->ops->set_power_mgmt) 9663 return -EOPNOTSUPP; 9664 9665 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9666 if (!msg) 9667 return -ENOMEM; 9668 9669 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9670 NL80211_CMD_GET_POWER_SAVE); 9671 if (!hdr) { 9672 err = -ENOBUFS; 9673 goto free_msg; 9674 } 9675 9676 if (wdev->ps) 9677 ps_state = NL80211_PS_ENABLED; 9678 else 9679 ps_state = NL80211_PS_DISABLED; 9680 9681 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 9682 goto nla_put_failure; 9683 9684 genlmsg_end(msg, hdr); 9685 return genlmsg_reply(msg, info); 9686 9687 nla_put_failure: 9688 err = -ENOBUFS; 9689 free_msg: 9690 nlmsg_free(msg); 9691 return err; 9692 } 9693 9694 static const struct nla_policy 9695 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 9696 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_BINARY }, 9697 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 9698 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 9699 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 9700 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 9701 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 9702 [NL80211_ATTR_CQM_RSSI_LEVEL] = { .type = NLA_S32 }, 9703 }; 9704 9705 static int nl80211_set_cqm_txe(struct genl_info *info, 9706 u32 rate, u32 pkts, u32 intvl) 9707 { 9708 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9709 struct net_device *dev = info->user_ptr[1]; 9710 struct wireless_dev *wdev = dev->ieee80211_ptr; 9711 9712 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 9713 return -EINVAL; 9714 9715 if (!rdev->ops->set_cqm_txe_config) 9716 return -EOPNOTSUPP; 9717 9718 if (wdev->iftype != NL80211_IFTYPE_STATION && 9719 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9720 return -EOPNOTSUPP; 9721 9722 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 9723 } 9724 9725 static int cfg80211_cqm_rssi_update(struct cfg80211_registered_device *rdev, 9726 struct net_device *dev) 9727 { 9728 struct wireless_dev *wdev = dev->ieee80211_ptr; 9729 s32 last, low, high; 9730 u32 hyst; 9731 int i, n; 9732 int err; 9733 9734 /* RSSI reporting disabled? */ 9735 if (!wdev->cqm_config) 9736 return rdev_set_cqm_rssi_range_config(rdev, dev, 0, 0); 9737 9738 /* 9739 * Obtain current RSSI value if possible, if not and no RSSI threshold 9740 * event has been received yet, we should receive an event after a 9741 * connection is established and enough beacons received to calculate 9742 * the average. 9743 */ 9744 if (!wdev->cqm_config->last_rssi_event_value && wdev->current_bss && 9745 rdev->ops->get_station) { 9746 struct station_info sinfo; 9747 u8 *mac_addr; 9748 9749 mac_addr = wdev->current_bss->pub.bssid; 9750 9751 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 9752 if (err) 9753 return err; 9754 9755 if (sinfo.filled & BIT(NL80211_STA_INFO_BEACON_SIGNAL_AVG)) 9756 wdev->cqm_config->last_rssi_event_value = 9757 (s8) sinfo.rx_beacon_signal_avg; 9758 } 9759 9760 last = wdev->cqm_config->last_rssi_event_value; 9761 hyst = wdev->cqm_config->rssi_hyst; 9762 n = wdev->cqm_config->n_rssi_thresholds; 9763 9764 for (i = 0; i < n; i++) 9765 if (last < wdev->cqm_config->rssi_thresholds[i]) 9766 break; 9767 9768 low = i > 0 ? 9769 (wdev->cqm_config->rssi_thresholds[i - 1] - hyst) : S32_MIN; 9770 high = i < n ? 9771 (wdev->cqm_config->rssi_thresholds[i] + hyst - 1) : S32_MAX; 9772 9773 return rdev_set_cqm_rssi_range_config(rdev, dev, low, high); 9774 } 9775 9776 static int nl80211_set_cqm_rssi(struct genl_info *info, 9777 const s32 *thresholds, int n_thresholds, 9778 u32 hysteresis) 9779 { 9780 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9781 struct net_device *dev = info->user_ptr[1]; 9782 struct wireless_dev *wdev = dev->ieee80211_ptr; 9783 int i, err; 9784 s32 prev = S32_MIN; 9785 9786 /* Check all values negative and sorted */ 9787 for (i = 0; i < n_thresholds; i++) { 9788 if (thresholds[i] > 0 || thresholds[i] <= prev) 9789 return -EINVAL; 9790 9791 prev = thresholds[i]; 9792 } 9793 9794 if (wdev->iftype != NL80211_IFTYPE_STATION && 9795 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9796 return -EOPNOTSUPP; 9797 9798 wdev_lock(wdev); 9799 cfg80211_cqm_config_free(wdev); 9800 wdev_unlock(wdev); 9801 9802 if (n_thresholds <= 1 && rdev->ops->set_cqm_rssi_config) { 9803 if (n_thresholds == 0 || thresholds[0] == 0) /* Disabling */ 9804 return rdev_set_cqm_rssi_config(rdev, dev, 0, 0); 9805 9806 return rdev_set_cqm_rssi_config(rdev, dev, 9807 thresholds[0], hysteresis); 9808 } 9809 9810 if (!wiphy_ext_feature_isset(&rdev->wiphy, 9811 NL80211_EXT_FEATURE_CQM_RSSI_LIST)) 9812 return -EOPNOTSUPP; 9813 9814 if (n_thresholds == 1 && thresholds[0] == 0) /* Disabling */ 9815 n_thresholds = 0; 9816 9817 wdev_lock(wdev); 9818 if (n_thresholds) { 9819 struct cfg80211_cqm_config *cqm_config; 9820 9821 cqm_config = kzalloc(sizeof(struct cfg80211_cqm_config) + 9822 n_thresholds * sizeof(s32), GFP_KERNEL); 9823 if (!cqm_config) { 9824 err = -ENOMEM; 9825 goto unlock; 9826 } 9827 9828 cqm_config->rssi_hyst = hysteresis; 9829 cqm_config->n_rssi_thresholds = n_thresholds; 9830 memcpy(cqm_config->rssi_thresholds, thresholds, 9831 n_thresholds * sizeof(s32)); 9832 9833 wdev->cqm_config = cqm_config; 9834 } 9835 9836 err = cfg80211_cqm_rssi_update(rdev, dev); 9837 9838 unlock: 9839 wdev_unlock(wdev); 9840 9841 return err; 9842 } 9843 9844 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 9845 { 9846 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 9847 struct nlattr *cqm; 9848 int err; 9849 9850 cqm = info->attrs[NL80211_ATTR_CQM]; 9851 if (!cqm) 9852 return -EINVAL; 9853 9854 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 9855 nl80211_attr_cqm_policy, info->extack); 9856 if (err) 9857 return err; 9858 9859 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 9860 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 9861 const s32 *thresholds = 9862 nla_data(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9863 int len = nla_len(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9864 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 9865 9866 if (len % 4) 9867 return -EINVAL; 9868 9869 return nl80211_set_cqm_rssi(info, thresholds, len / 4, 9870 hysteresis); 9871 } 9872 9873 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 9874 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 9875 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 9876 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 9877 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 9878 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 9879 9880 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 9881 } 9882 9883 return -EINVAL; 9884 } 9885 9886 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 9887 { 9888 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9889 struct net_device *dev = info->user_ptr[1]; 9890 struct ocb_setup setup = {}; 9891 int err; 9892 9893 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9894 if (err) 9895 return err; 9896 9897 return cfg80211_join_ocb(rdev, dev, &setup); 9898 } 9899 9900 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 9901 { 9902 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9903 struct net_device *dev = info->user_ptr[1]; 9904 9905 return cfg80211_leave_ocb(rdev, dev); 9906 } 9907 9908 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 9909 { 9910 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9911 struct net_device *dev = info->user_ptr[1]; 9912 struct mesh_config cfg; 9913 struct mesh_setup setup; 9914 int err; 9915 9916 /* start with default */ 9917 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 9918 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 9919 9920 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 9921 /* and parse parameters if given */ 9922 err = nl80211_parse_mesh_config(info, &cfg, NULL); 9923 if (err) 9924 return err; 9925 } 9926 9927 if (!info->attrs[NL80211_ATTR_MESH_ID] || 9928 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 9929 return -EINVAL; 9930 9931 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 9932 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 9933 9934 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 9935 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 9936 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 9937 return -EINVAL; 9938 9939 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 9940 setup.beacon_interval = 9941 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 9942 9943 err = cfg80211_validate_beacon_int(rdev, 9944 NL80211_IFTYPE_MESH_POINT, 9945 setup.beacon_interval); 9946 if (err) 9947 return err; 9948 } 9949 9950 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 9951 setup.dtim_period = 9952 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 9953 if (setup.dtim_period < 1 || setup.dtim_period > 100) 9954 return -EINVAL; 9955 } 9956 9957 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 9958 /* parse additional setup parameters if given */ 9959 err = nl80211_parse_mesh_setup(info, &setup); 9960 if (err) 9961 return err; 9962 } 9963 9964 if (setup.user_mpm) 9965 cfg.auto_open_plinks = false; 9966 9967 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9968 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9969 if (err) 9970 return err; 9971 } else { 9972 /* cfg80211_join_mesh() will sort it out */ 9973 setup.chandef.chan = NULL; 9974 } 9975 9976 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 9977 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9978 int n_rates = 9979 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9980 struct ieee80211_supported_band *sband; 9981 9982 if (!setup.chandef.chan) 9983 return -EINVAL; 9984 9985 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 9986 9987 err = ieee80211_get_ratemask(sband, rates, n_rates, 9988 &setup.basic_rates); 9989 if (err) 9990 return err; 9991 } 9992 9993 if (info->attrs[NL80211_ATTR_TX_RATES]) { 9994 err = nl80211_parse_tx_bitrate_mask(info, &setup.beacon_rate); 9995 if (err) 9996 return err; 9997 9998 if (!setup.chandef.chan) 9999 return -EINVAL; 10000 10001 err = validate_beacon_tx_rate(rdev, setup.chandef.chan->band, 10002 &setup.beacon_rate); 10003 if (err) 10004 return err; 10005 } 10006 10007 setup.userspace_handles_dfs = 10008 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 10009 10010 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 10011 } 10012 10013 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 10014 { 10015 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10016 struct net_device *dev = info->user_ptr[1]; 10017 10018 return cfg80211_leave_mesh(rdev, dev); 10019 } 10020 10021 #ifdef CONFIG_PM 10022 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 10023 struct cfg80211_registered_device *rdev) 10024 { 10025 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 10026 struct nlattr *nl_pats, *nl_pat; 10027 int i, pat_len; 10028 10029 if (!wowlan->n_patterns) 10030 return 0; 10031 10032 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 10033 if (!nl_pats) 10034 return -ENOBUFS; 10035 10036 for (i = 0; i < wowlan->n_patterns; i++) { 10037 nl_pat = nla_nest_start(msg, i + 1); 10038 if (!nl_pat) 10039 return -ENOBUFS; 10040 pat_len = wowlan->patterns[i].pattern_len; 10041 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 10042 wowlan->patterns[i].mask) || 10043 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10044 wowlan->patterns[i].pattern) || 10045 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10046 wowlan->patterns[i].pkt_offset)) 10047 return -ENOBUFS; 10048 nla_nest_end(msg, nl_pat); 10049 } 10050 nla_nest_end(msg, nl_pats); 10051 10052 return 0; 10053 } 10054 10055 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 10056 struct cfg80211_wowlan_tcp *tcp) 10057 { 10058 struct nlattr *nl_tcp; 10059 10060 if (!tcp) 10061 return 0; 10062 10063 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 10064 if (!nl_tcp) 10065 return -ENOBUFS; 10066 10067 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 10068 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 10069 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 10070 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 10071 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 10072 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 10073 tcp->payload_len, tcp->payload) || 10074 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 10075 tcp->data_interval) || 10076 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 10077 tcp->wake_len, tcp->wake_data) || 10078 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 10079 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 10080 return -ENOBUFS; 10081 10082 if (tcp->payload_seq.len && 10083 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 10084 sizeof(tcp->payload_seq), &tcp->payload_seq)) 10085 return -ENOBUFS; 10086 10087 if (tcp->payload_tok.len && 10088 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 10089 sizeof(tcp->payload_tok) + tcp->tokens_size, 10090 &tcp->payload_tok)) 10091 return -ENOBUFS; 10092 10093 nla_nest_end(msg, nl_tcp); 10094 10095 return 0; 10096 } 10097 10098 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 10099 struct cfg80211_sched_scan_request *req) 10100 { 10101 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 10102 int i; 10103 10104 if (!req) 10105 return 0; 10106 10107 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 10108 if (!nd) 10109 return -ENOBUFS; 10110 10111 if (req->n_scan_plans == 1 && 10112 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 10113 req->scan_plans[0].interval * 1000)) 10114 return -ENOBUFS; 10115 10116 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 10117 return -ENOBUFS; 10118 10119 if (req->relative_rssi_set) { 10120 struct nl80211_bss_select_rssi_adjust rssi_adjust; 10121 10122 if (nla_put_s8(msg, NL80211_ATTR_SCHED_SCAN_RELATIVE_RSSI, 10123 req->relative_rssi)) 10124 return -ENOBUFS; 10125 10126 rssi_adjust.band = req->rssi_adjust.band; 10127 rssi_adjust.delta = req->rssi_adjust.delta; 10128 if (nla_put(msg, NL80211_ATTR_SCHED_SCAN_RSSI_ADJUST, 10129 sizeof(rssi_adjust), &rssi_adjust)) 10130 return -ENOBUFS; 10131 } 10132 10133 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 10134 if (!freqs) 10135 return -ENOBUFS; 10136 10137 for (i = 0; i < req->n_channels; i++) { 10138 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 10139 return -ENOBUFS; 10140 } 10141 10142 nla_nest_end(msg, freqs); 10143 10144 if (req->n_match_sets) { 10145 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 10146 if (!matches) 10147 return -ENOBUFS; 10148 10149 for (i = 0; i < req->n_match_sets; i++) { 10150 match = nla_nest_start(msg, i); 10151 if (!match) 10152 return -ENOBUFS; 10153 10154 if (nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 10155 req->match_sets[i].ssid.ssid_len, 10156 req->match_sets[i].ssid.ssid)) 10157 return -ENOBUFS; 10158 nla_nest_end(msg, match); 10159 } 10160 nla_nest_end(msg, matches); 10161 } 10162 10163 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 10164 if (!scan_plans) 10165 return -ENOBUFS; 10166 10167 for (i = 0; i < req->n_scan_plans; i++) { 10168 scan_plan = nla_nest_start(msg, i + 1); 10169 if (!scan_plan) 10170 return -ENOBUFS; 10171 10172 if (!scan_plan || 10173 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 10174 req->scan_plans[i].interval) || 10175 (req->scan_plans[i].iterations && 10176 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 10177 req->scan_plans[i].iterations))) 10178 return -ENOBUFS; 10179 nla_nest_end(msg, scan_plan); 10180 } 10181 nla_nest_end(msg, scan_plans); 10182 10183 nla_nest_end(msg, nd); 10184 10185 return 0; 10186 } 10187 10188 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 10189 { 10190 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10191 struct sk_buff *msg; 10192 void *hdr; 10193 u32 size = NLMSG_DEFAULT_SIZE; 10194 10195 if (!rdev->wiphy.wowlan) 10196 return -EOPNOTSUPP; 10197 10198 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 10199 /* adjust size to have room for all the data */ 10200 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 10201 rdev->wiphy.wowlan_config->tcp->payload_len + 10202 rdev->wiphy.wowlan_config->tcp->wake_len + 10203 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 10204 } 10205 10206 msg = nlmsg_new(size, GFP_KERNEL); 10207 if (!msg) 10208 return -ENOMEM; 10209 10210 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10211 NL80211_CMD_GET_WOWLAN); 10212 if (!hdr) 10213 goto nla_put_failure; 10214 10215 if (rdev->wiphy.wowlan_config) { 10216 struct nlattr *nl_wowlan; 10217 10218 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 10219 if (!nl_wowlan) 10220 goto nla_put_failure; 10221 10222 if ((rdev->wiphy.wowlan_config->any && 10223 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 10224 (rdev->wiphy.wowlan_config->disconnect && 10225 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 10226 (rdev->wiphy.wowlan_config->magic_pkt && 10227 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 10228 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 10229 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 10230 (rdev->wiphy.wowlan_config->eap_identity_req && 10231 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 10232 (rdev->wiphy.wowlan_config->four_way_handshake && 10233 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 10234 (rdev->wiphy.wowlan_config->rfkill_release && 10235 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 10236 goto nla_put_failure; 10237 10238 if (nl80211_send_wowlan_patterns(msg, rdev)) 10239 goto nla_put_failure; 10240 10241 if (nl80211_send_wowlan_tcp(msg, 10242 rdev->wiphy.wowlan_config->tcp)) 10243 goto nla_put_failure; 10244 10245 if (nl80211_send_wowlan_nd( 10246 msg, 10247 rdev->wiphy.wowlan_config->nd_config)) 10248 goto nla_put_failure; 10249 10250 nla_nest_end(msg, nl_wowlan); 10251 } 10252 10253 genlmsg_end(msg, hdr); 10254 return genlmsg_reply(msg, info); 10255 10256 nla_put_failure: 10257 nlmsg_free(msg); 10258 return -ENOBUFS; 10259 } 10260 10261 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 10262 struct nlattr *attr, 10263 struct cfg80211_wowlan *trig) 10264 { 10265 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 10266 struct cfg80211_wowlan_tcp *cfg; 10267 struct nl80211_wowlan_tcp_data_token *tok = NULL; 10268 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 10269 u32 size; 10270 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 10271 int err, port; 10272 10273 if (!rdev->wiphy.wowlan->tcp) 10274 return -EINVAL; 10275 10276 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TCP, attr, 10277 nl80211_wowlan_tcp_policy, NULL); 10278 if (err) 10279 return err; 10280 10281 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 10282 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 10283 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 10284 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 10285 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 10286 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 10287 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 10288 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 10289 return -EINVAL; 10290 10291 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 10292 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 10293 return -EINVAL; 10294 10295 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 10296 rdev->wiphy.wowlan->tcp->data_interval_max || 10297 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 10298 return -EINVAL; 10299 10300 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 10301 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 10302 return -EINVAL; 10303 10304 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 10305 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 10306 return -EINVAL; 10307 10308 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 10309 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10310 10311 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 10312 tokens_size = tokln - sizeof(*tok); 10313 10314 if (!tok->len || tokens_size % tok->len) 10315 return -EINVAL; 10316 if (!rdev->wiphy.wowlan->tcp->tok) 10317 return -EINVAL; 10318 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 10319 return -EINVAL; 10320 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 10321 return -EINVAL; 10322 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 10323 return -EINVAL; 10324 if (tok->offset + tok->len > data_size) 10325 return -EINVAL; 10326 } 10327 10328 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 10329 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 10330 if (!rdev->wiphy.wowlan->tcp->seq) 10331 return -EINVAL; 10332 if (seq->len == 0 || seq->len > 4) 10333 return -EINVAL; 10334 if (seq->len + seq->offset > data_size) 10335 return -EINVAL; 10336 } 10337 10338 size = sizeof(*cfg); 10339 size += data_size; 10340 size += wake_size + wake_mask_size; 10341 size += tokens_size; 10342 10343 cfg = kzalloc(size, GFP_KERNEL); 10344 if (!cfg) 10345 return -ENOMEM; 10346 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 10347 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 10348 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 10349 ETH_ALEN); 10350 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 10351 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 10352 else 10353 port = 0; 10354 #ifdef CONFIG_INET 10355 /* allocate a socket and port for it and use it */ 10356 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 10357 IPPROTO_TCP, &cfg->sock, 1); 10358 if (err) { 10359 kfree(cfg); 10360 return err; 10361 } 10362 if (inet_csk_get_port(cfg->sock->sk, port)) { 10363 sock_release(cfg->sock); 10364 kfree(cfg); 10365 return -EADDRINUSE; 10366 } 10367 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 10368 #else 10369 if (!port) { 10370 kfree(cfg); 10371 return -EINVAL; 10372 } 10373 cfg->src_port = port; 10374 #endif 10375 10376 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 10377 cfg->payload_len = data_size; 10378 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 10379 memcpy((void *)cfg->payload, 10380 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 10381 data_size); 10382 if (seq) 10383 cfg->payload_seq = *seq; 10384 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 10385 cfg->wake_len = wake_size; 10386 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 10387 memcpy((void *)cfg->wake_data, 10388 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 10389 wake_size); 10390 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 10391 data_size + wake_size; 10392 memcpy((void *)cfg->wake_mask, 10393 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 10394 wake_mask_size); 10395 if (tok) { 10396 cfg->tokens_size = tokens_size; 10397 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 10398 } 10399 10400 trig->tcp = cfg; 10401 10402 return 0; 10403 } 10404 10405 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 10406 const struct wiphy_wowlan_support *wowlan, 10407 struct nlattr *attr, 10408 struct cfg80211_wowlan *trig) 10409 { 10410 struct nlattr **tb; 10411 int err; 10412 10413 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 10414 if (!tb) 10415 return -ENOMEM; 10416 10417 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 10418 err = -EOPNOTSUPP; 10419 goto out; 10420 } 10421 10422 err = nla_parse_nested(tb, NL80211_ATTR_MAX, attr, nl80211_policy, 10423 NULL); 10424 if (err) 10425 goto out; 10426 10427 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb, 10428 wowlan->max_nd_match_sets); 10429 err = PTR_ERR_OR_ZERO(trig->nd_config); 10430 if (err) 10431 trig->nd_config = NULL; 10432 10433 out: 10434 kfree(tb); 10435 return err; 10436 } 10437 10438 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 10439 { 10440 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10441 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 10442 struct cfg80211_wowlan new_triggers = {}; 10443 struct cfg80211_wowlan *ntrig; 10444 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 10445 int err, i; 10446 bool prev_enabled = rdev->wiphy.wowlan_config; 10447 bool regular = false; 10448 10449 if (!wowlan) 10450 return -EOPNOTSUPP; 10451 10452 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 10453 cfg80211_rdev_free_wowlan(rdev); 10454 rdev->wiphy.wowlan_config = NULL; 10455 goto set_wakeup; 10456 } 10457 10458 err = nla_parse_nested(tb, MAX_NL80211_WOWLAN_TRIG, 10459 info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS], 10460 nl80211_wowlan_policy, info->extack); 10461 if (err) 10462 return err; 10463 10464 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 10465 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 10466 return -EINVAL; 10467 new_triggers.any = true; 10468 } 10469 10470 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 10471 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 10472 return -EINVAL; 10473 new_triggers.disconnect = true; 10474 regular = true; 10475 } 10476 10477 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 10478 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 10479 return -EINVAL; 10480 new_triggers.magic_pkt = true; 10481 regular = true; 10482 } 10483 10484 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 10485 return -EINVAL; 10486 10487 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 10488 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 10489 return -EINVAL; 10490 new_triggers.gtk_rekey_failure = true; 10491 regular = true; 10492 } 10493 10494 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 10495 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 10496 return -EINVAL; 10497 new_triggers.eap_identity_req = true; 10498 regular = true; 10499 } 10500 10501 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 10502 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 10503 return -EINVAL; 10504 new_triggers.four_way_handshake = true; 10505 regular = true; 10506 } 10507 10508 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 10509 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 10510 return -EINVAL; 10511 new_triggers.rfkill_release = true; 10512 regular = true; 10513 } 10514 10515 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 10516 struct nlattr *pat; 10517 int n_patterns = 0; 10518 int rem, pat_len, mask_len, pkt_offset; 10519 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10520 10521 regular = true; 10522 10523 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10524 rem) 10525 n_patterns++; 10526 if (n_patterns > wowlan->n_patterns) 10527 return -EINVAL; 10528 10529 new_triggers.patterns = kcalloc(n_patterns, 10530 sizeof(new_triggers.patterns[0]), 10531 GFP_KERNEL); 10532 if (!new_triggers.patterns) 10533 return -ENOMEM; 10534 10535 new_triggers.n_patterns = n_patterns; 10536 i = 0; 10537 10538 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 10539 rem) { 10540 u8 *mask_pat; 10541 10542 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 10543 nl80211_packet_pattern_policy, 10544 info->extack); 10545 err = -EINVAL; 10546 if (!pat_tb[NL80211_PKTPAT_MASK] || 10547 !pat_tb[NL80211_PKTPAT_PATTERN]) 10548 goto error; 10549 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10550 mask_len = DIV_ROUND_UP(pat_len, 8); 10551 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10552 goto error; 10553 if (pat_len > wowlan->pattern_max_len || 10554 pat_len < wowlan->pattern_min_len) 10555 goto error; 10556 10557 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10558 pkt_offset = 0; 10559 else 10560 pkt_offset = nla_get_u32( 10561 pat_tb[NL80211_PKTPAT_OFFSET]); 10562 if (pkt_offset > wowlan->max_pkt_offset) 10563 goto error; 10564 new_triggers.patterns[i].pkt_offset = pkt_offset; 10565 10566 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10567 if (!mask_pat) { 10568 err = -ENOMEM; 10569 goto error; 10570 } 10571 new_triggers.patterns[i].mask = mask_pat; 10572 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10573 mask_len); 10574 mask_pat += mask_len; 10575 new_triggers.patterns[i].pattern = mask_pat; 10576 new_triggers.patterns[i].pattern_len = pat_len; 10577 memcpy(mask_pat, 10578 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10579 pat_len); 10580 i++; 10581 } 10582 } 10583 10584 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 10585 regular = true; 10586 err = nl80211_parse_wowlan_tcp( 10587 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 10588 &new_triggers); 10589 if (err) 10590 goto error; 10591 } 10592 10593 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 10594 regular = true; 10595 err = nl80211_parse_wowlan_nd( 10596 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 10597 &new_triggers); 10598 if (err) 10599 goto error; 10600 } 10601 10602 /* The 'any' trigger means the device continues operating more or less 10603 * as in its normal operation mode and wakes up the host on most of the 10604 * normal interrupts (like packet RX, ...) 10605 * It therefore makes little sense to combine with the more constrained 10606 * wakeup trigger modes. 10607 */ 10608 if (new_triggers.any && regular) { 10609 err = -EINVAL; 10610 goto error; 10611 } 10612 10613 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 10614 if (!ntrig) { 10615 err = -ENOMEM; 10616 goto error; 10617 } 10618 cfg80211_rdev_free_wowlan(rdev); 10619 rdev->wiphy.wowlan_config = ntrig; 10620 10621 set_wakeup: 10622 if (rdev->ops->set_wakeup && 10623 prev_enabled != !!rdev->wiphy.wowlan_config) 10624 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 10625 10626 return 0; 10627 error: 10628 for (i = 0; i < new_triggers.n_patterns; i++) 10629 kfree(new_triggers.patterns[i].mask); 10630 kfree(new_triggers.patterns); 10631 if (new_triggers.tcp && new_triggers.tcp->sock) 10632 sock_release(new_triggers.tcp->sock); 10633 kfree(new_triggers.tcp); 10634 kfree(new_triggers.nd_config); 10635 return err; 10636 } 10637 #endif 10638 10639 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 10640 struct cfg80211_registered_device *rdev) 10641 { 10642 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 10643 int i, j, pat_len; 10644 struct cfg80211_coalesce_rules *rule; 10645 10646 if (!rdev->coalesce->n_rules) 10647 return 0; 10648 10649 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 10650 if (!nl_rules) 10651 return -ENOBUFS; 10652 10653 for (i = 0; i < rdev->coalesce->n_rules; i++) { 10654 nl_rule = nla_nest_start(msg, i + 1); 10655 if (!nl_rule) 10656 return -ENOBUFS; 10657 10658 rule = &rdev->coalesce->rules[i]; 10659 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 10660 rule->delay)) 10661 return -ENOBUFS; 10662 10663 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 10664 rule->condition)) 10665 return -ENOBUFS; 10666 10667 nl_pats = nla_nest_start(msg, 10668 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 10669 if (!nl_pats) 10670 return -ENOBUFS; 10671 10672 for (j = 0; j < rule->n_patterns; j++) { 10673 nl_pat = nla_nest_start(msg, j + 1); 10674 if (!nl_pat) 10675 return -ENOBUFS; 10676 pat_len = rule->patterns[j].pattern_len; 10677 if (nla_put(msg, NL80211_PKTPAT_MASK, 10678 DIV_ROUND_UP(pat_len, 8), 10679 rule->patterns[j].mask) || 10680 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 10681 rule->patterns[j].pattern) || 10682 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 10683 rule->patterns[j].pkt_offset)) 10684 return -ENOBUFS; 10685 nla_nest_end(msg, nl_pat); 10686 } 10687 nla_nest_end(msg, nl_pats); 10688 nla_nest_end(msg, nl_rule); 10689 } 10690 nla_nest_end(msg, nl_rules); 10691 10692 return 0; 10693 } 10694 10695 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 10696 { 10697 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10698 struct sk_buff *msg; 10699 void *hdr; 10700 10701 if (!rdev->wiphy.coalesce) 10702 return -EOPNOTSUPP; 10703 10704 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10705 if (!msg) 10706 return -ENOMEM; 10707 10708 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10709 NL80211_CMD_GET_COALESCE); 10710 if (!hdr) 10711 goto nla_put_failure; 10712 10713 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 10714 goto nla_put_failure; 10715 10716 genlmsg_end(msg, hdr); 10717 return genlmsg_reply(msg, info); 10718 10719 nla_put_failure: 10720 nlmsg_free(msg); 10721 return -ENOBUFS; 10722 } 10723 10724 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 10725 { 10726 struct cfg80211_coalesce *coalesce = rdev->coalesce; 10727 int i, j; 10728 struct cfg80211_coalesce_rules *rule; 10729 10730 if (!coalesce) 10731 return; 10732 10733 for (i = 0; i < coalesce->n_rules; i++) { 10734 rule = &coalesce->rules[i]; 10735 for (j = 0; j < rule->n_patterns; j++) 10736 kfree(rule->patterns[j].mask); 10737 kfree(rule->patterns); 10738 } 10739 kfree(coalesce->rules); 10740 kfree(coalesce); 10741 rdev->coalesce = NULL; 10742 } 10743 10744 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 10745 struct nlattr *rule, 10746 struct cfg80211_coalesce_rules *new_rule) 10747 { 10748 int err, i; 10749 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10750 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 10751 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 10752 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10753 10754 err = nla_parse_nested(tb, NL80211_ATTR_COALESCE_RULE_MAX, rule, 10755 nl80211_coalesce_policy, NULL); 10756 if (err) 10757 return err; 10758 10759 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 10760 new_rule->delay = 10761 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 10762 if (new_rule->delay > coalesce->max_delay) 10763 return -EINVAL; 10764 10765 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 10766 new_rule->condition = 10767 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 10768 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 10769 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 10770 return -EINVAL; 10771 10772 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 10773 return -EINVAL; 10774 10775 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10776 rem) 10777 n_patterns++; 10778 if (n_patterns > coalesce->n_patterns) 10779 return -EINVAL; 10780 10781 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 10782 GFP_KERNEL); 10783 if (!new_rule->patterns) 10784 return -ENOMEM; 10785 10786 new_rule->n_patterns = n_patterns; 10787 i = 0; 10788 10789 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10790 rem) { 10791 u8 *mask_pat; 10792 10793 nla_parse_nested(pat_tb, MAX_NL80211_PKTPAT, pat, 10794 nl80211_packet_pattern_policy, NULL); 10795 if (!pat_tb[NL80211_PKTPAT_MASK] || 10796 !pat_tb[NL80211_PKTPAT_PATTERN]) 10797 return -EINVAL; 10798 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10799 mask_len = DIV_ROUND_UP(pat_len, 8); 10800 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10801 return -EINVAL; 10802 if (pat_len > coalesce->pattern_max_len || 10803 pat_len < coalesce->pattern_min_len) 10804 return -EINVAL; 10805 10806 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10807 pkt_offset = 0; 10808 else 10809 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 10810 if (pkt_offset > coalesce->max_pkt_offset) 10811 return -EINVAL; 10812 new_rule->patterns[i].pkt_offset = pkt_offset; 10813 10814 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10815 if (!mask_pat) 10816 return -ENOMEM; 10817 10818 new_rule->patterns[i].mask = mask_pat; 10819 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10820 mask_len); 10821 10822 mask_pat += mask_len; 10823 new_rule->patterns[i].pattern = mask_pat; 10824 new_rule->patterns[i].pattern_len = pat_len; 10825 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10826 pat_len); 10827 i++; 10828 } 10829 10830 return 0; 10831 } 10832 10833 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 10834 { 10835 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10836 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10837 struct cfg80211_coalesce new_coalesce = {}; 10838 struct cfg80211_coalesce *n_coalesce; 10839 int err, rem_rule, n_rules = 0, i, j; 10840 struct nlattr *rule; 10841 struct cfg80211_coalesce_rules *tmp_rule; 10842 10843 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 10844 return -EOPNOTSUPP; 10845 10846 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 10847 cfg80211_rdev_free_coalesce(rdev); 10848 rdev_set_coalesce(rdev, NULL); 10849 return 0; 10850 } 10851 10852 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10853 rem_rule) 10854 n_rules++; 10855 if (n_rules > coalesce->n_rules) 10856 return -EINVAL; 10857 10858 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 10859 GFP_KERNEL); 10860 if (!new_coalesce.rules) 10861 return -ENOMEM; 10862 10863 new_coalesce.n_rules = n_rules; 10864 i = 0; 10865 10866 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10867 rem_rule) { 10868 err = nl80211_parse_coalesce_rule(rdev, rule, 10869 &new_coalesce.rules[i]); 10870 if (err) 10871 goto error; 10872 10873 i++; 10874 } 10875 10876 err = rdev_set_coalesce(rdev, &new_coalesce); 10877 if (err) 10878 goto error; 10879 10880 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 10881 if (!n_coalesce) { 10882 err = -ENOMEM; 10883 goto error; 10884 } 10885 cfg80211_rdev_free_coalesce(rdev); 10886 rdev->coalesce = n_coalesce; 10887 10888 return 0; 10889 error: 10890 for (i = 0; i < new_coalesce.n_rules; i++) { 10891 tmp_rule = &new_coalesce.rules[i]; 10892 for (j = 0; j < tmp_rule->n_patterns; j++) 10893 kfree(tmp_rule->patterns[j].mask); 10894 kfree(tmp_rule->patterns); 10895 } 10896 kfree(new_coalesce.rules); 10897 10898 return err; 10899 } 10900 10901 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 10902 { 10903 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10904 struct net_device *dev = info->user_ptr[1]; 10905 struct wireless_dev *wdev = dev->ieee80211_ptr; 10906 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 10907 struct cfg80211_gtk_rekey_data rekey_data; 10908 int err; 10909 10910 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 10911 return -EINVAL; 10912 10913 err = nla_parse_nested(tb, MAX_NL80211_REKEY_DATA, 10914 info->attrs[NL80211_ATTR_REKEY_DATA], 10915 nl80211_rekey_policy, info->extack); 10916 if (err) 10917 return err; 10918 10919 if (!tb[NL80211_REKEY_DATA_REPLAY_CTR] || !tb[NL80211_REKEY_DATA_KEK] || 10920 !tb[NL80211_REKEY_DATA_KCK]) 10921 return -EINVAL; 10922 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 10923 return -ERANGE; 10924 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 10925 return -ERANGE; 10926 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 10927 return -ERANGE; 10928 10929 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 10930 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 10931 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 10932 10933 wdev_lock(wdev); 10934 if (!wdev->current_bss) { 10935 err = -ENOTCONN; 10936 goto out; 10937 } 10938 10939 if (!rdev->ops->set_rekey_data) { 10940 err = -EOPNOTSUPP; 10941 goto out; 10942 } 10943 10944 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 10945 out: 10946 wdev_unlock(wdev); 10947 return err; 10948 } 10949 10950 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 10951 struct genl_info *info) 10952 { 10953 struct net_device *dev = info->user_ptr[1]; 10954 struct wireless_dev *wdev = dev->ieee80211_ptr; 10955 10956 if (wdev->iftype != NL80211_IFTYPE_AP && 10957 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10958 return -EINVAL; 10959 10960 if (wdev->ap_unexpected_nlportid) 10961 return -EBUSY; 10962 10963 wdev->ap_unexpected_nlportid = info->snd_portid; 10964 return 0; 10965 } 10966 10967 static int nl80211_probe_client(struct sk_buff *skb, 10968 struct genl_info *info) 10969 { 10970 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10971 struct net_device *dev = info->user_ptr[1]; 10972 struct wireless_dev *wdev = dev->ieee80211_ptr; 10973 struct sk_buff *msg; 10974 void *hdr; 10975 const u8 *addr; 10976 u64 cookie; 10977 int err; 10978 10979 if (wdev->iftype != NL80211_IFTYPE_AP && 10980 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10981 return -EOPNOTSUPP; 10982 10983 if (!info->attrs[NL80211_ATTR_MAC]) 10984 return -EINVAL; 10985 10986 if (!rdev->ops->probe_client) 10987 return -EOPNOTSUPP; 10988 10989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10990 if (!msg) 10991 return -ENOMEM; 10992 10993 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10994 NL80211_CMD_PROBE_CLIENT); 10995 if (!hdr) { 10996 err = -ENOBUFS; 10997 goto free_msg; 10998 } 10999 11000 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 11001 11002 err = rdev_probe_client(rdev, dev, addr, &cookie); 11003 if (err) 11004 goto free_msg; 11005 11006 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11007 NL80211_ATTR_PAD)) 11008 goto nla_put_failure; 11009 11010 genlmsg_end(msg, hdr); 11011 11012 return genlmsg_reply(msg, info); 11013 11014 nla_put_failure: 11015 err = -ENOBUFS; 11016 free_msg: 11017 nlmsg_free(msg); 11018 return err; 11019 } 11020 11021 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 11022 { 11023 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11024 struct cfg80211_beacon_registration *reg, *nreg; 11025 int rv; 11026 11027 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 11028 return -EOPNOTSUPP; 11029 11030 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 11031 if (!nreg) 11032 return -ENOMEM; 11033 11034 /* First, check if already registered. */ 11035 spin_lock_bh(&rdev->beacon_registrations_lock); 11036 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 11037 if (reg->nlportid == info->snd_portid) { 11038 rv = -EALREADY; 11039 goto out_err; 11040 } 11041 } 11042 /* Add it to the list */ 11043 nreg->nlportid = info->snd_portid; 11044 list_add(&nreg->list, &rdev->beacon_registrations); 11045 11046 spin_unlock_bh(&rdev->beacon_registrations_lock); 11047 11048 return 0; 11049 out_err: 11050 spin_unlock_bh(&rdev->beacon_registrations_lock); 11051 kfree(nreg); 11052 return rv; 11053 } 11054 11055 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 11056 { 11057 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11058 struct wireless_dev *wdev = info->user_ptr[1]; 11059 int err; 11060 11061 if (!rdev->ops->start_p2p_device) 11062 return -EOPNOTSUPP; 11063 11064 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11065 return -EOPNOTSUPP; 11066 11067 if (wdev_running(wdev)) 11068 return 0; 11069 11070 if (rfkill_blocked(rdev->rfkill)) 11071 return -ERFKILL; 11072 11073 err = rdev_start_p2p_device(rdev, wdev); 11074 if (err) 11075 return err; 11076 11077 wdev->is_running = true; 11078 rdev->opencount++; 11079 11080 return 0; 11081 } 11082 11083 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 11084 { 11085 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11086 struct wireless_dev *wdev = info->user_ptr[1]; 11087 11088 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 11089 return -EOPNOTSUPP; 11090 11091 if (!rdev->ops->stop_p2p_device) 11092 return -EOPNOTSUPP; 11093 11094 cfg80211_stop_p2p_device(rdev, wdev); 11095 11096 return 0; 11097 } 11098 11099 static int nl80211_start_nan(struct sk_buff *skb, struct genl_info *info) 11100 { 11101 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11102 struct wireless_dev *wdev = info->user_ptr[1]; 11103 struct cfg80211_nan_conf conf = {}; 11104 int err; 11105 11106 if (wdev->iftype != NL80211_IFTYPE_NAN) 11107 return -EOPNOTSUPP; 11108 11109 if (wdev_running(wdev)) 11110 return -EEXIST; 11111 11112 if (rfkill_blocked(rdev->rfkill)) 11113 return -ERFKILL; 11114 11115 if (!info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) 11116 return -EINVAL; 11117 11118 conf.master_pref = 11119 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11120 if (!conf.master_pref) 11121 return -EINVAL; 11122 11123 if (info->attrs[NL80211_ATTR_BANDS]) { 11124 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11125 11126 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11127 return -EOPNOTSUPP; 11128 11129 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11130 return -EINVAL; 11131 11132 conf.bands = bands; 11133 } 11134 11135 err = rdev_start_nan(rdev, wdev, &conf); 11136 if (err) 11137 return err; 11138 11139 wdev->is_running = true; 11140 rdev->opencount++; 11141 11142 return 0; 11143 } 11144 11145 static int nl80211_stop_nan(struct sk_buff *skb, struct genl_info *info) 11146 { 11147 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11148 struct wireless_dev *wdev = info->user_ptr[1]; 11149 11150 if (wdev->iftype != NL80211_IFTYPE_NAN) 11151 return -EOPNOTSUPP; 11152 11153 cfg80211_stop_nan(rdev, wdev); 11154 11155 return 0; 11156 } 11157 11158 static int validate_nan_filter(struct nlattr *filter_attr) 11159 { 11160 struct nlattr *attr; 11161 int len = 0, n_entries = 0, rem; 11162 11163 nla_for_each_nested(attr, filter_attr, rem) { 11164 len += nla_len(attr); 11165 n_entries++; 11166 } 11167 11168 if (len >= U8_MAX) 11169 return -EINVAL; 11170 11171 return n_entries; 11172 } 11173 11174 static int handle_nan_filter(struct nlattr *attr_filter, 11175 struct cfg80211_nan_func *func, 11176 bool tx) 11177 { 11178 struct nlattr *attr; 11179 int n_entries, rem, i; 11180 struct cfg80211_nan_func_filter *filter; 11181 11182 n_entries = validate_nan_filter(attr_filter); 11183 if (n_entries < 0) 11184 return n_entries; 11185 11186 BUILD_BUG_ON(sizeof(*func->rx_filters) != sizeof(*func->tx_filters)); 11187 11188 filter = kcalloc(n_entries, sizeof(*func->rx_filters), GFP_KERNEL); 11189 if (!filter) 11190 return -ENOMEM; 11191 11192 i = 0; 11193 nla_for_each_nested(attr, attr_filter, rem) { 11194 filter[i].filter = nla_memdup(attr, GFP_KERNEL); 11195 filter[i].len = nla_len(attr); 11196 i++; 11197 } 11198 if (tx) { 11199 func->num_tx_filters = n_entries; 11200 func->tx_filters = filter; 11201 } else { 11202 func->num_rx_filters = n_entries; 11203 func->rx_filters = filter; 11204 } 11205 11206 return 0; 11207 } 11208 11209 static int nl80211_nan_add_func(struct sk_buff *skb, 11210 struct genl_info *info) 11211 { 11212 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11213 struct wireless_dev *wdev = info->user_ptr[1]; 11214 struct nlattr *tb[NUM_NL80211_NAN_FUNC_ATTR], *func_attr; 11215 struct cfg80211_nan_func *func; 11216 struct sk_buff *msg = NULL; 11217 void *hdr = NULL; 11218 int err = 0; 11219 11220 if (wdev->iftype != NL80211_IFTYPE_NAN) 11221 return -EOPNOTSUPP; 11222 11223 if (!wdev_running(wdev)) 11224 return -ENOTCONN; 11225 11226 if (!info->attrs[NL80211_ATTR_NAN_FUNC]) 11227 return -EINVAL; 11228 11229 err = nla_parse_nested(tb, NL80211_NAN_FUNC_ATTR_MAX, 11230 info->attrs[NL80211_ATTR_NAN_FUNC], 11231 nl80211_nan_func_policy, info->extack); 11232 if (err) 11233 return err; 11234 11235 func = kzalloc(sizeof(*func), GFP_KERNEL); 11236 if (!func) 11237 return -ENOMEM; 11238 11239 func->cookie = wdev->wiphy->cookie_counter++; 11240 11241 if (!tb[NL80211_NAN_FUNC_TYPE] || 11242 nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]) > NL80211_NAN_FUNC_MAX_TYPE) { 11243 err = -EINVAL; 11244 goto out; 11245 } 11246 11247 11248 func->type = nla_get_u8(tb[NL80211_NAN_FUNC_TYPE]); 11249 11250 if (!tb[NL80211_NAN_FUNC_SERVICE_ID]) { 11251 err = -EINVAL; 11252 goto out; 11253 } 11254 11255 memcpy(func->service_id, nla_data(tb[NL80211_NAN_FUNC_SERVICE_ID]), 11256 sizeof(func->service_id)); 11257 11258 func->close_range = 11259 nla_get_flag(tb[NL80211_NAN_FUNC_CLOSE_RANGE]); 11260 11261 if (tb[NL80211_NAN_FUNC_SERVICE_INFO]) { 11262 func->serv_spec_info_len = 11263 nla_len(tb[NL80211_NAN_FUNC_SERVICE_INFO]); 11264 func->serv_spec_info = 11265 kmemdup(nla_data(tb[NL80211_NAN_FUNC_SERVICE_INFO]), 11266 func->serv_spec_info_len, 11267 GFP_KERNEL); 11268 if (!func->serv_spec_info) { 11269 err = -ENOMEM; 11270 goto out; 11271 } 11272 } 11273 11274 if (tb[NL80211_NAN_FUNC_TTL]) 11275 func->ttl = nla_get_u32(tb[NL80211_NAN_FUNC_TTL]); 11276 11277 switch (func->type) { 11278 case NL80211_NAN_FUNC_PUBLISH: 11279 if (!tb[NL80211_NAN_FUNC_PUBLISH_TYPE]) { 11280 err = -EINVAL; 11281 goto out; 11282 } 11283 11284 func->publish_type = 11285 nla_get_u8(tb[NL80211_NAN_FUNC_PUBLISH_TYPE]); 11286 func->publish_bcast = 11287 nla_get_flag(tb[NL80211_NAN_FUNC_PUBLISH_BCAST]); 11288 11289 if ((!(func->publish_type & NL80211_NAN_SOLICITED_PUBLISH)) && 11290 func->publish_bcast) { 11291 err = -EINVAL; 11292 goto out; 11293 } 11294 break; 11295 case NL80211_NAN_FUNC_SUBSCRIBE: 11296 func->subscribe_active = 11297 nla_get_flag(tb[NL80211_NAN_FUNC_SUBSCRIBE_ACTIVE]); 11298 break; 11299 case NL80211_NAN_FUNC_FOLLOW_UP: 11300 if (!tb[NL80211_NAN_FUNC_FOLLOW_UP_ID] || 11301 !tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]) { 11302 err = -EINVAL; 11303 goto out; 11304 } 11305 11306 func->followup_id = 11307 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_ID]); 11308 func->followup_reqid = 11309 nla_get_u8(tb[NL80211_NAN_FUNC_FOLLOW_UP_REQ_ID]); 11310 memcpy(func->followup_dest.addr, 11311 nla_data(tb[NL80211_NAN_FUNC_FOLLOW_UP_DEST]), 11312 sizeof(func->followup_dest.addr)); 11313 if (func->ttl) { 11314 err = -EINVAL; 11315 goto out; 11316 } 11317 break; 11318 default: 11319 err = -EINVAL; 11320 goto out; 11321 } 11322 11323 if (tb[NL80211_NAN_FUNC_SRF]) { 11324 struct nlattr *srf_tb[NUM_NL80211_NAN_SRF_ATTR]; 11325 11326 err = nla_parse_nested(srf_tb, NL80211_NAN_SRF_ATTR_MAX, 11327 tb[NL80211_NAN_FUNC_SRF], 11328 nl80211_nan_srf_policy, info->extack); 11329 if (err) 11330 goto out; 11331 11332 func->srf_include = 11333 nla_get_flag(srf_tb[NL80211_NAN_SRF_INCLUDE]); 11334 11335 if (srf_tb[NL80211_NAN_SRF_BF]) { 11336 if (srf_tb[NL80211_NAN_SRF_MAC_ADDRS] || 11337 !srf_tb[NL80211_NAN_SRF_BF_IDX]) { 11338 err = -EINVAL; 11339 goto out; 11340 } 11341 11342 func->srf_bf_len = 11343 nla_len(srf_tb[NL80211_NAN_SRF_BF]); 11344 func->srf_bf = 11345 kmemdup(nla_data(srf_tb[NL80211_NAN_SRF_BF]), 11346 func->srf_bf_len, GFP_KERNEL); 11347 if (!func->srf_bf) { 11348 err = -ENOMEM; 11349 goto out; 11350 } 11351 11352 func->srf_bf_idx = 11353 nla_get_u8(srf_tb[NL80211_NAN_SRF_BF_IDX]); 11354 } else { 11355 struct nlattr *attr, *mac_attr = 11356 srf_tb[NL80211_NAN_SRF_MAC_ADDRS]; 11357 int n_entries, rem, i = 0; 11358 11359 if (!mac_attr) { 11360 err = -EINVAL; 11361 goto out; 11362 } 11363 11364 n_entries = validate_acl_mac_addrs(mac_attr); 11365 if (n_entries <= 0) { 11366 err = -EINVAL; 11367 goto out; 11368 } 11369 11370 func->srf_num_macs = n_entries; 11371 func->srf_macs = 11372 kzalloc(sizeof(*func->srf_macs) * n_entries, 11373 GFP_KERNEL); 11374 if (!func->srf_macs) { 11375 err = -ENOMEM; 11376 goto out; 11377 } 11378 11379 nla_for_each_nested(attr, mac_attr, rem) 11380 memcpy(func->srf_macs[i++].addr, nla_data(attr), 11381 sizeof(*func->srf_macs)); 11382 } 11383 } 11384 11385 if (tb[NL80211_NAN_FUNC_TX_MATCH_FILTER]) { 11386 err = handle_nan_filter(tb[NL80211_NAN_FUNC_TX_MATCH_FILTER], 11387 func, true); 11388 if (err) 11389 goto out; 11390 } 11391 11392 if (tb[NL80211_NAN_FUNC_RX_MATCH_FILTER]) { 11393 err = handle_nan_filter(tb[NL80211_NAN_FUNC_RX_MATCH_FILTER], 11394 func, false); 11395 if (err) 11396 goto out; 11397 } 11398 11399 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11400 if (!msg) { 11401 err = -ENOMEM; 11402 goto out; 11403 } 11404 11405 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11406 NL80211_CMD_ADD_NAN_FUNCTION); 11407 /* This can't really happen - we just allocated 4KB */ 11408 if (WARN_ON(!hdr)) { 11409 err = -ENOMEM; 11410 goto out; 11411 } 11412 11413 err = rdev_add_nan_func(rdev, wdev, func); 11414 out: 11415 if (err < 0) { 11416 cfg80211_free_nan_func(func); 11417 nlmsg_free(msg); 11418 return err; 11419 } 11420 11421 /* propagate the instance id and cookie to userspace */ 11422 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, func->cookie, 11423 NL80211_ATTR_PAD)) 11424 goto nla_put_failure; 11425 11426 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11427 if (!func_attr) 11428 goto nla_put_failure; 11429 11430 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, 11431 func->instance_id)) 11432 goto nla_put_failure; 11433 11434 nla_nest_end(msg, func_attr); 11435 11436 genlmsg_end(msg, hdr); 11437 return genlmsg_reply(msg, info); 11438 11439 nla_put_failure: 11440 nlmsg_free(msg); 11441 return -ENOBUFS; 11442 } 11443 11444 static int nl80211_nan_del_func(struct sk_buff *skb, 11445 struct genl_info *info) 11446 { 11447 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11448 struct wireless_dev *wdev = info->user_ptr[1]; 11449 u64 cookie; 11450 11451 if (wdev->iftype != NL80211_IFTYPE_NAN) 11452 return -EOPNOTSUPP; 11453 11454 if (!wdev_running(wdev)) 11455 return -ENOTCONN; 11456 11457 if (!info->attrs[NL80211_ATTR_COOKIE]) 11458 return -EINVAL; 11459 11460 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 11461 11462 rdev_del_nan_func(rdev, wdev, cookie); 11463 11464 return 0; 11465 } 11466 11467 static int nl80211_nan_change_config(struct sk_buff *skb, 11468 struct genl_info *info) 11469 { 11470 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11471 struct wireless_dev *wdev = info->user_ptr[1]; 11472 struct cfg80211_nan_conf conf = {}; 11473 u32 changed = 0; 11474 11475 if (wdev->iftype != NL80211_IFTYPE_NAN) 11476 return -EOPNOTSUPP; 11477 11478 if (!wdev_running(wdev)) 11479 return -ENOTCONN; 11480 11481 if (info->attrs[NL80211_ATTR_NAN_MASTER_PREF]) { 11482 conf.master_pref = 11483 nla_get_u8(info->attrs[NL80211_ATTR_NAN_MASTER_PREF]); 11484 if (conf.master_pref <= 1 || conf.master_pref == 255) 11485 return -EINVAL; 11486 11487 changed |= CFG80211_NAN_CONF_CHANGED_PREF; 11488 } 11489 11490 if (info->attrs[NL80211_ATTR_BANDS]) { 11491 u32 bands = nla_get_u32(info->attrs[NL80211_ATTR_BANDS]); 11492 11493 if (bands & ~(u32)wdev->wiphy->nan_supported_bands) 11494 return -EOPNOTSUPP; 11495 11496 if (bands && !(bands & BIT(NL80211_BAND_2GHZ))) 11497 return -EINVAL; 11498 11499 conf.bands = bands; 11500 changed |= CFG80211_NAN_CONF_CHANGED_BANDS; 11501 } 11502 11503 if (!changed) 11504 return -EINVAL; 11505 11506 return rdev_nan_change_conf(rdev, wdev, &conf, changed); 11507 } 11508 11509 void cfg80211_nan_match(struct wireless_dev *wdev, 11510 struct cfg80211_nan_match_params *match, gfp_t gfp) 11511 { 11512 struct wiphy *wiphy = wdev->wiphy; 11513 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11514 struct nlattr *match_attr, *local_func_attr, *peer_func_attr; 11515 struct sk_buff *msg; 11516 void *hdr; 11517 11518 if (WARN_ON(!match->inst_id || !match->peer_inst_id || !match->addr)) 11519 return; 11520 11521 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11522 if (!msg) 11523 return; 11524 11525 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NAN_MATCH); 11526 if (!hdr) { 11527 nlmsg_free(msg); 11528 return; 11529 } 11530 11531 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11532 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11533 wdev->netdev->ifindex)) || 11534 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11535 NL80211_ATTR_PAD)) 11536 goto nla_put_failure; 11537 11538 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, match->cookie, 11539 NL80211_ATTR_PAD) || 11540 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, match->addr)) 11541 goto nla_put_failure; 11542 11543 match_attr = nla_nest_start(msg, NL80211_ATTR_NAN_MATCH); 11544 if (!match_attr) 11545 goto nla_put_failure; 11546 11547 local_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_LOCAL); 11548 if (!local_func_attr) 11549 goto nla_put_failure; 11550 11551 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->inst_id)) 11552 goto nla_put_failure; 11553 11554 nla_nest_end(msg, local_func_attr); 11555 11556 peer_func_attr = nla_nest_start(msg, NL80211_NAN_MATCH_FUNC_PEER); 11557 if (!peer_func_attr) 11558 goto nla_put_failure; 11559 11560 if (nla_put_u8(msg, NL80211_NAN_FUNC_TYPE, match->type) || 11561 nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, match->peer_inst_id)) 11562 goto nla_put_failure; 11563 11564 if (match->info && match->info_len && 11565 nla_put(msg, NL80211_NAN_FUNC_SERVICE_INFO, match->info_len, 11566 match->info)) 11567 goto nla_put_failure; 11568 11569 nla_nest_end(msg, peer_func_attr); 11570 nla_nest_end(msg, match_attr); 11571 genlmsg_end(msg, hdr); 11572 11573 if (!wdev->owner_nlportid) 11574 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 11575 msg, 0, NL80211_MCGRP_NAN, gfp); 11576 else 11577 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 11578 wdev->owner_nlportid); 11579 11580 return; 11581 11582 nla_put_failure: 11583 nlmsg_free(msg); 11584 } 11585 EXPORT_SYMBOL(cfg80211_nan_match); 11586 11587 void cfg80211_nan_func_terminated(struct wireless_dev *wdev, 11588 u8 inst_id, 11589 enum nl80211_nan_func_term_reason reason, 11590 u64 cookie, gfp_t gfp) 11591 { 11592 struct wiphy *wiphy = wdev->wiphy; 11593 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11594 struct sk_buff *msg; 11595 struct nlattr *func_attr; 11596 void *hdr; 11597 11598 if (WARN_ON(!inst_id)) 11599 return; 11600 11601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11602 if (!msg) 11603 return; 11604 11605 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_NAN_FUNCTION); 11606 if (!hdr) { 11607 nlmsg_free(msg); 11608 return; 11609 } 11610 11611 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11612 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11613 wdev->netdev->ifindex)) || 11614 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11615 NL80211_ATTR_PAD)) 11616 goto nla_put_failure; 11617 11618 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 11619 NL80211_ATTR_PAD)) 11620 goto nla_put_failure; 11621 11622 func_attr = nla_nest_start(msg, NL80211_ATTR_NAN_FUNC); 11623 if (!func_attr) 11624 goto nla_put_failure; 11625 11626 if (nla_put_u8(msg, NL80211_NAN_FUNC_INSTANCE_ID, inst_id) || 11627 nla_put_u8(msg, NL80211_NAN_FUNC_TERM_REASON, reason)) 11628 goto nla_put_failure; 11629 11630 nla_nest_end(msg, func_attr); 11631 genlmsg_end(msg, hdr); 11632 11633 if (!wdev->owner_nlportid) 11634 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 11635 msg, 0, NL80211_MCGRP_NAN, gfp); 11636 else 11637 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, 11638 wdev->owner_nlportid); 11639 11640 return; 11641 11642 nla_put_failure: 11643 nlmsg_free(msg); 11644 } 11645 EXPORT_SYMBOL(cfg80211_nan_func_terminated); 11646 11647 static int nl80211_get_protocol_features(struct sk_buff *skb, 11648 struct genl_info *info) 11649 { 11650 void *hdr; 11651 struct sk_buff *msg; 11652 11653 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11654 if (!msg) 11655 return -ENOMEM; 11656 11657 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 11658 NL80211_CMD_GET_PROTOCOL_FEATURES); 11659 if (!hdr) 11660 goto nla_put_failure; 11661 11662 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 11663 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 11664 goto nla_put_failure; 11665 11666 genlmsg_end(msg, hdr); 11667 return genlmsg_reply(msg, info); 11668 11669 nla_put_failure: 11670 kfree_skb(msg); 11671 return -ENOBUFS; 11672 } 11673 11674 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 11675 { 11676 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11677 struct cfg80211_update_ft_ies_params ft_params; 11678 struct net_device *dev = info->user_ptr[1]; 11679 11680 if (!rdev->ops->update_ft_ies) 11681 return -EOPNOTSUPP; 11682 11683 if (!info->attrs[NL80211_ATTR_MDID] || 11684 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 11685 return -EINVAL; 11686 11687 memset(&ft_params, 0, sizeof(ft_params)); 11688 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 11689 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 11690 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 11691 11692 return rdev_update_ft_ies(rdev, dev, &ft_params); 11693 } 11694 11695 static int nl80211_crit_protocol_start(struct sk_buff *skb, 11696 struct genl_info *info) 11697 { 11698 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11699 struct wireless_dev *wdev = info->user_ptr[1]; 11700 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 11701 u16 duration; 11702 int ret; 11703 11704 if (!rdev->ops->crit_proto_start) 11705 return -EOPNOTSUPP; 11706 11707 if (WARN_ON(!rdev->ops->crit_proto_stop)) 11708 return -EINVAL; 11709 11710 if (rdev->crit_proto_nlportid) 11711 return -EBUSY; 11712 11713 /* determine protocol if provided */ 11714 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 11715 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 11716 11717 if (proto >= NUM_NL80211_CRIT_PROTO) 11718 return -EINVAL; 11719 11720 /* timeout must be provided */ 11721 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 11722 return -EINVAL; 11723 11724 duration = 11725 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 11726 11727 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 11728 return -ERANGE; 11729 11730 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 11731 if (!ret) 11732 rdev->crit_proto_nlportid = info->snd_portid; 11733 11734 return ret; 11735 } 11736 11737 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 11738 struct genl_info *info) 11739 { 11740 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11741 struct wireless_dev *wdev = info->user_ptr[1]; 11742 11743 if (!rdev->ops->crit_proto_stop) 11744 return -EOPNOTSUPP; 11745 11746 if (rdev->crit_proto_nlportid) { 11747 rdev->crit_proto_nlportid = 0; 11748 rdev_crit_proto_stop(rdev, wdev); 11749 } 11750 return 0; 11751 } 11752 11753 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 11754 { 11755 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 11756 struct wireless_dev *wdev = 11757 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 11758 int i, err; 11759 u32 vid, subcmd; 11760 11761 if (!rdev->wiphy.vendor_commands) 11762 return -EOPNOTSUPP; 11763 11764 if (IS_ERR(wdev)) { 11765 err = PTR_ERR(wdev); 11766 if (err != -EINVAL) 11767 return err; 11768 wdev = NULL; 11769 } else if (wdev->wiphy != &rdev->wiphy) { 11770 return -EINVAL; 11771 } 11772 11773 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 11774 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 11775 return -EINVAL; 11776 11777 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 11778 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 11779 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 11780 const struct wiphy_vendor_command *vcmd; 11781 void *data = NULL; 11782 int len = 0; 11783 11784 vcmd = &rdev->wiphy.vendor_commands[i]; 11785 11786 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 11787 continue; 11788 11789 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 11790 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 11791 if (!wdev) 11792 return -EINVAL; 11793 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 11794 !wdev->netdev) 11795 return -EINVAL; 11796 11797 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 11798 if (!wdev_running(wdev)) 11799 return -ENETDOWN; 11800 } 11801 11802 if (!vcmd->doit) 11803 return -EOPNOTSUPP; 11804 } else { 11805 wdev = NULL; 11806 } 11807 11808 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 11809 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 11810 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 11811 } 11812 11813 rdev->cur_cmd_info = info; 11814 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 11815 data, len); 11816 rdev->cur_cmd_info = NULL; 11817 return err; 11818 } 11819 11820 return -EOPNOTSUPP; 11821 } 11822 11823 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 11824 struct netlink_callback *cb, 11825 struct cfg80211_registered_device **rdev, 11826 struct wireless_dev **wdev) 11827 { 11828 struct nlattr **attrbuf = genl_family_attrbuf(&nl80211_fam); 11829 u32 vid, subcmd; 11830 unsigned int i; 11831 int vcmd_idx = -1; 11832 int err; 11833 void *data = NULL; 11834 unsigned int data_len = 0; 11835 11836 if (cb->args[0]) { 11837 /* subtract the 1 again here */ 11838 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 11839 struct wireless_dev *tmp; 11840 11841 if (!wiphy) 11842 return -ENODEV; 11843 *rdev = wiphy_to_rdev(wiphy); 11844 *wdev = NULL; 11845 11846 if (cb->args[1]) { 11847 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 11848 if (tmp->identifier == cb->args[1] - 1) { 11849 *wdev = tmp; 11850 break; 11851 } 11852 } 11853 } 11854 11855 /* keep rtnl locked in successful case */ 11856 return 0; 11857 } 11858 11859 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, attrbuf, 11860 nl80211_fam.maxattr, nl80211_policy, NULL); 11861 if (err) 11862 return err; 11863 11864 if (!attrbuf[NL80211_ATTR_VENDOR_ID] || 11865 !attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) 11866 return -EINVAL; 11867 11868 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), attrbuf); 11869 if (IS_ERR(*wdev)) 11870 *wdev = NULL; 11871 11872 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), attrbuf); 11873 if (IS_ERR(*rdev)) 11874 return PTR_ERR(*rdev); 11875 11876 vid = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_ID]); 11877 subcmd = nla_get_u32(attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 11878 11879 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 11880 const struct wiphy_vendor_command *vcmd; 11881 11882 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 11883 11884 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 11885 continue; 11886 11887 if (!vcmd->dumpit) 11888 return -EOPNOTSUPP; 11889 11890 vcmd_idx = i; 11891 break; 11892 } 11893 11894 if (vcmd_idx < 0) 11895 return -EOPNOTSUPP; 11896 11897 if (attrbuf[NL80211_ATTR_VENDOR_DATA]) { 11898 data = nla_data(attrbuf[NL80211_ATTR_VENDOR_DATA]); 11899 data_len = nla_len(attrbuf[NL80211_ATTR_VENDOR_DATA]); 11900 } 11901 11902 /* 0 is the first index - add 1 to parse only once */ 11903 cb->args[0] = (*rdev)->wiphy_idx + 1; 11904 /* add 1 to know if it was NULL */ 11905 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 11906 cb->args[2] = vcmd_idx; 11907 cb->args[3] = (unsigned long)data; 11908 cb->args[4] = data_len; 11909 11910 /* keep rtnl locked in successful case */ 11911 return 0; 11912 } 11913 11914 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 11915 struct netlink_callback *cb) 11916 { 11917 struct cfg80211_registered_device *rdev; 11918 struct wireless_dev *wdev; 11919 unsigned int vcmd_idx; 11920 const struct wiphy_vendor_command *vcmd; 11921 void *data; 11922 int data_len; 11923 int err; 11924 struct nlattr *vendor_data; 11925 11926 rtnl_lock(); 11927 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 11928 if (err) 11929 goto out; 11930 11931 vcmd_idx = cb->args[2]; 11932 data = (void *)cb->args[3]; 11933 data_len = cb->args[4]; 11934 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 11935 11936 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 11937 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 11938 if (!wdev) { 11939 err = -EINVAL; 11940 goto out; 11941 } 11942 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 11943 !wdev->netdev) { 11944 err = -EINVAL; 11945 goto out; 11946 } 11947 11948 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 11949 if (!wdev_running(wdev)) { 11950 err = -ENETDOWN; 11951 goto out; 11952 } 11953 } 11954 } 11955 11956 while (1) { 11957 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 11958 cb->nlh->nlmsg_seq, NLM_F_MULTI, 11959 NL80211_CMD_VENDOR); 11960 if (!hdr) 11961 break; 11962 11963 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11964 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 11965 wdev_id(wdev), 11966 NL80211_ATTR_PAD))) { 11967 genlmsg_cancel(skb, hdr); 11968 break; 11969 } 11970 11971 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 11972 if (!vendor_data) { 11973 genlmsg_cancel(skb, hdr); 11974 break; 11975 } 11976 11977 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 11978 (unsigned long *)&cb->args[5]); 11979 nla_nest_end(skb, vendor_data); 11980 11981 if (err == -ENOBUFS || err == -ENOENT) { 11982 genlmsg_cancel(skb, hdr); 11983 break; 11984 } else if (err) { 11985 genlmsg_cancel(skb, hdr); 11986 goto out; 11987 } 11988 11989 genlmsg_end(skb, hdr); 11990 } 11991 11992 err = skb->len; 11993 out: 11994 rtnl_unlock(); 11995 return err; 11996 } 11997 11998 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 11999 enum nl80211_commands cmd, 12000 enum nl80211_attrs attr, 12001 int approxlen) 12002 { 12003 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12004 12005 if (WARN_ON(!rdev->cur_cmd_info)) 12006 return NULL; 12007 12008 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 12009 rdev->cur_cmd_info->snd_portid, 12010 rdev->cur_cmd_info->snd_seq, 12011 cmd, attr, NULL, GFP_KERNEL); 12012 } 12013 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 12014 12015 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 12016 { 12017 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 12018 void *hdr = ((void **)skb->cb)[1]; 12019 struct nlattr *data = ((void **)skb->cb)[2]; 12020 12021 /* clear CB data for netlink core to own from now on */ 12022 memset(skb->cb, 0, sizeof(skb->cb)); 12023 12024 if (WARN_ON(!rdev->cur_cmd_info)) { 12025 kfree_skb(skb); 12026 return -EINVAL; 12027 } 12028 12029 nla_nest_end(skb, data); 12030 genlmsg_end(skb, hdr); 12031 return genlmsg_reply(skb, rdev->cur_cmd_info); 12032 } 12033 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 12034 12035 static int nl80211_set_qos_map(struct sk_buff *skb, 12036 struct genl_info *info) 12037 { 12038 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12039 struct cfg80211_qos_map *qos_map = NULL; 12040 struct net_device *dev = info->user_ptr[1]; 12041 u8 *pos, len, num_des, des_len, des; 12042 int ret; 12043 12044 if (!rdev->ops->set_qos_map) 12045 return -EOPNOTSUPP; 12046 12047 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 12048 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 12049 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 12050 12051 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 12052 len > IEEE80211_QOS_MAP_LEN_MAX) 12053 return -EINVAL; 12054 12055 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 12056 if (!qos_map) 12057 return -ENOMEM; 12058 12059 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 12060 if (num_des) { 12061 des_len = num_des * 12062 sizeof(struct cfg80211_dscp_exception); 12063 memcpy(qos_map->dscp_exception, pos, des_len); 12064 qos_map->num_des = num_des; 12065 for (des = 0; des < num_des; des++) { 12066 if (qos_map->dscp_exception[des].up > 7) { 12067 kfree(qos_map); 12068 return -EINVAL; 12069 } 12070 } 12071 pos += des_len; 12072 } 12073 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 12074 } 12075 12076 wdev_lock(dev->ieee80211_ptr); 12077 ret = nl80211_key_allowed(dev->ieee80211_ptr); 12078 if (!ret) 12079 ret = rdev_set_qos_map(rdev, dev, qos_map); 12080 wdev_unlock(dev->ieee80211_ptr); 12081 12082 kfree(qos_map); 12083 return ret; 12084 } 12085 12086 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 12087 { 12088 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12089 struct net_device *dev = info->user_ptr[1]; 12090 struct wireless_dev *wdev = dev->ieee80211_ptr; 12091 const u8 *peer; 12092 u8 tsid, up; 12093 u16 admitted_time = 0; 12094 int err; 12095 12096 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 12097 return -EOPNOTSUPP; 12098 12099 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 12100 !info->attrs[NL80211_ATTR_USER_PRIO]) 12101 return -EINVAL; 12102 12103 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12104 if (tsid >= IEEE80211_NUM_TIDS) 12105 return -EINVAL; 12106 12107 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 12108 if (up >= IEEE80211_NUM_UPS) 12109 return -EINVAL; 12110 12111 /* WMM uses TIDs 0-7 even for TSPEC */ 12112 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 12113 /* TODO: handle 802.11 TSPEC/admission control 12114 * need more attributes for that (e.g. BA session requirement); 12115 * change the WMM adminssion test above to allow both then 12116 */ 12117 return -EINVAL; 12118 } 12119 12120 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12121 12122 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 12123 admitted_time = 12124 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 12125 if (!admitted_time) 12126 return -EINVAL; 12127 } 12128 12129 wdev_lock(wdev); 12130 switch (wdev->iftype) { 12131 case NL80211_IFTYPE_STATION: 12132 case NL80211_IFTYPE_P2P_CLIENT: 12133 if (wdev->current_bss) 12134 break; 12135 err = -ENOTCONN; 12136 goto out; 12137 default: 12138 err = -EOPNOTSUPP; 12139 goto out; 12140 } 12141 12142 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 12143 12144 out: 12145 wdev_unlock(wdev); 12146 return err; 12147 } 12148 12149 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 12150 { 12151 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12152 struct net_device *dev = info->user_ptr[1]; 12153 struct wireless_dev *wdev = dev->ieee80211_ptr; 12154 const u8 *peer; 12155 u8 tsid; 12156 int err; 12157 12158 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 12159 return -EINVAL; 12160 12161 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 12162 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 12163 12164 wdev_lock(wdev); 12165 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 12166 wdev_unlock(wdev); 12167 12168 return err; 12169 } 12170 12171 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 12172 struct genl_info *info) 12173 { 12174 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12175 struct net_device *dev = info->user_ptr[1]; 12176 struct wireless_dev *wdev = dev->ieee80211_ptr; 12177 struct cfg80211_chan_def chandef = {}; 12178 const u8 *addr; 12179 u8 oper_class; 12180 int err; 12181 12182 if (!rdev->ops->tdls_channel_switch || 12183 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12184 return -EOPNOTSUPP; 12185 12186 switch (dev->ieee80211_ptr->iftype) { 12187 case NL80211_IFTYPE_STATION: 12188 case NL80211_IFTYPE_P2P_CLIENT: 12189 break; 12190 default: 12191 return -EOPNOTSUPP; 12192 } 12193 12194 if (!info->attrs[NL80211_ATTR_MAC] || 12195 !info->attrs[NL80211_ATTR_OPER_CLASS]) 12196 return -EINVAL; 12197 12198 err = nl80211_parse_chandef(rdev, info, &chandef); 12199 if (err) 12200 return err; 12201 12202 /* 12203 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 12204 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 12205 * specification is not defined for them. 12206 */ 12207 if (chandef.chan->band == NL80211_BAND_2GHZ && 12208 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 12209 chandef.width != NL80211_CHAN_WIDTH_20) 12210 return -EINVAL; 12211 12212 /* we will be active on the TDLS link */ 12213 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 12214 wdev->iftype)) 12215 return -EINVAL; 12216 12217 /* don't allow switching to DFS channels */ 12218 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 12219 return -EINVAL; 12220 12221 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12222 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 12223 12224 wdev_lock(wdev); 12225 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 12226 wdev_unlock(wdev); 12227 12228 return err; 12229 } 12230 12231 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 12232 struct genl_info *info) 12233 { 12234 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12235 struct net_device *dev = info->user_ptr[1]; 12236 struct wireless_dev *wdev = dev->ieee80211_ptr; 12237 const u8 *addr; 12238 12239 if (!rdev->ops->tdls_channel_switch || 12240 !rdev->ops->tdls_cancel_channel_switch || 12241 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 12242 return -EOPNOTSUPP; 12243 12244 switch (dev->ieee80211_ptr->iftype) { 12245 case NL80211_IFTYPE_STATION: 12246 case NL80211_IFTYPE_P2P_CLIENT: 12247 break; 12248 default: 12249 return -EOPNOTSUPP; 12250 } 12251 12252 if (!info->attrs[NL80211_ATTR_MAC]) 12253 return -EINVAL; 12254 12255 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 12256 12257 wdev_lock(wdev); 12258 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 12259 wdev_unlock(wdev); 12260 12261 return 0; 12262 } 12263 12264 static int nl80211_set_multicast_to_unicast(struct sk_buff *skb, 12265 struct genl_info *info) 12266 { 12267 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12268 struct net_device *dev = info->user_ptr[1]; 12269 struct wireless_dev *wdev = dev->ieee80211_ptr; 12270 const struct nlattr *nla; 12271 bool enabled; 12272 12273 if (!rdev->ops->set_multicast_to_unicast) 12274 return -EOPNOTSUPP; 12275 12276 if (wdev->iftype != NL80211_IFTYPE_AP && 12277 wdev->iftype != NL80211_IFTYPE_P2P_GO) 12278 return -EOPNOTSUPP; 12279 12280 nla = info->attrs[NL80211_ATTR_MULTICAST_TO_UNICAST_ENABLED]; 12281 enabled = nla_get_flag(nla); 12282 12283 return rdev_set_multicast_to_unicast(rdev, dev, enabled); 12284 } 12285 12286 static int nl80211_set_pmk(struct sk_buff *skb, struct genl_info *info) 12287 { 12288 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12289 struct net_device *dev = info->user_ptr[1]; 12290 struct wireless_dev *wdev = dev->ieee80211_ptr; 12291 struct cfg80211_pmk_conf pmk_conf = {}; 12292 int ret; 12293 12294 if (wdev->iftype != NL80211_IFTYPE_STATION && 12295 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12296 return -EOPNOTSUPP; 12297 12298 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12299 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12300 return -EOPNOTSUPP; 12301 12302 if (!info->attrs[NL80211_ATTR_MAC] || !info->attrs[NL80211_ATTR_PMK]) 12303 return -EINVAL; 12304 12305 wdev_lock(wdev); 12306 if (!wdev->current_bss) { 12307 ret = -ENOTCONN; 12308 goto out; 12309 } 12310 12311 pmk_conf.aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12312 if (memcmp(pmk_conf.aa, wdev->current_bss->pub.bssid, ETH_ALEN)) { 12313 ret = -EINVAL; 12314 goto out; 12315 } 12316 12317 pmk_conf.pmk = nla_data(info->attrs[NL80211_ATTR_PMK]); 12318 pmk_conf.pmk_len = nla_len(info->attrs[NL80211_ATTR_PMK]); 12319 if (pmk_conf.pmk_len != WLAN_PMK_LEN && 12320 pmk_conf.pmk_len != WLAN_PMK_LEN_SUITE_B_192) { 12321 ret = -EINVAL; 12322 goto out; 12323 } 12324 12325 if (info->attrs[NL80211_ATTR_PMKR0_NAME]) { 12326 int r0_name_len = nla_len(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12327 12328 if (r0_name_len != WLAN_PMK_NAME_LEN) { 12329 ret = -EINVAL; 12330 goto out; 12331 } 12332 12333 pmk_conf.pmk_r0_name = 12334 nla_data(info->attrs[NL80211_ATTR_PMKR0_NAME]); 12335 } 12336 12337 ret = rdev_set_pmk(rdev, dev, &pmk_conf); 12338 out: 12339 wdev_unlock(wdev); 12340 return ret; 12341 } 12342 12343 static int nl80211_del_pmk(struct sk_buff *skb, struct genl_info *info) 12344 { 12345 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 12346 struct net_device *dev = info->user_ptr[1]; 12347 struct wireless_dev *wdev = dev->ieee80211_ptr; 12348 const u8 *aa; 12349 int ret; 12350 12351 if (wdev->iftype != NL80211_IFTYPE_STATION && 12352 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 12353 return -EOPNOTSUPP; 12354 12355 if (!wiphy_ext_feature_isset(&rdev->wiphy, 12356 NL80211_EXT_FEATURE_4WAY_HANDSHAKE_STA_1X)) 12357 return -EOPNOTSUPP; 12358 12359 if (!info->attrs[NL80211_ATTR_MAC]) 12360 return -EINVAL; 12361 12362 wdev_lock(wdev); 12363 aa = nla_data(info->attrs[NL80211_ATTR_MAC]); 12364 ret = rdev_del_pmk(rdev, dev, aa); 12365 wdev_unlock(wdev); 12366 12367 return ret; 12368 } 12369 12370 #define NL80211_FLAG_NEED_WIPHY 0x01 12371 #define NL80211_FLAG_NEED_NETDEV 0x02 12372 #define NL80211_FLAG_NEED_RTNL 0x04 12373 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 12374 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 12375 NL80211_FLAG_CHECK_NETDEV_UP) 12376 #define NL80211_FLAG_NEED_WDEV 0x10 12377 /* If a netdev is associated, it must be UP, P2P must be started */ 12378 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 12379 NL80211_FLAG_CHECK_NETDEV_UP) 12380 #define NL80211_FLAG_CLEAR_SKB 0x20 12381 12382 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 12383 struct genl_info *info) 12384 { 12385 struct cfg80211_registered_device *rdev; 12386 struct wireless_dev *wdev; 12387 struct net_device *dev; 12388 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 12389 12390 if (rtnl) 12391 rtnl_lock(); 12392 12393 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 12394 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 12395 if (IS_ERR(rdev)) { 12396 if (rtnl) 12397 rtnl_unlock(); 12398 return PTR_ERR(rdev); 12399 } 12400 info->user_ptr[0] = rdev; 12401 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 12402 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 12403 ASSERT_RTNL(); 12404 12405 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 12406 info->attrs); 12407 if (IS_ERR(wdev)) { 12408 if (rtnl) 12409 rtnl_unlock(); 12410 return PTR_ERR(wdev); 12411 } 12412 12413 dev = wdev->netdev; 12414 rdev = wiphy_to_rdev(wdev->wiphy); 12415 12416 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 12417 if (!dev) { 12418 if (rtnl) 12419 rtnl_unlock(); 12420 return -EINVAL; 12421 } 12422 12423 info->user_ptr[1] = dev; 12424 } else { 12425 info->user_ptr[1] = wdev; 12426 } 12427 12428 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 12429 !wdev_running(wdev)) { 12430 if (rtnl) 12431 rtnl_unlock(); 12432 return -ENETDOWN; 12433 } 12434 12435 if (dev) 12436 dev_hold(dev); 12437 12438 info->user_ptr[0] = rdev; 12439 } 12440 12441 return 0; 12442 } 12443 12444 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 12445 struct genl_info *info) 12446 { 12447 if (info->user_ptr[1]) { 12448 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 12449 struct wireless_dev *wdev = info->user_ptr[1]; 12450 12451 if (wdev->netdev) 12452 dev_put(wdev->netdev); 12453 } else { 12454 dev_put(info->user_ptr[1]); 12455 } 12456 } 12457 12458 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 12459 rtnl_unlock(); 12460 12461 /* If needed, clear the netlink message payload from the SKB 12462 * as it might contain key data that shouldn't stick around on 12463 * the heap after the SKB is freed. The netlink message header 12464 * is still needed for further processing, so leave it intact. 12465 */ 12466 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 12467 struct nlmsghdr *nlh = nlmsg_hdr(skb); 12468 12469 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 12470 } 12471 } 12472 12473 static const struct genl_ops nl80211_ops[] = { 12474 { 12475 .cmd = NL80211_CMD_GET_WIPHY, 12476 .doit = nl80211_get_wiphy, 12477 .dumpit = nl80211_dump_wiphy, 12478 .done = nl80211_dump_wiphy_done, 12479 .policy = nl80211_policy, 12480 /* can be retrieved by unprivileged users */ 12481 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12482 NL80211_FLAG_NEED_RTNL, 12483 }, 12484 { 12485 .cmd = NL80211_CMD_SET_WIPHY, 12486 .doit = nl80211_set_wiphy, 12487 .policy = nl80211_policy, 12488 .flags = GENL_UNS_ADMIN_PERM, 12489 .internal_flags = NL80211_FLAG_NEED_RTNL, 12490 }, 12491 { 12492 .cmd = NL80211_CMD_GET_INTERFACE, 12493 .doit = nl80211_get_interface, 12494 .dumpit = nl80211_dump_interface, 12495 .policy = nl80211_policy, 12496 /* can be retrieved by unprivileged users */ 12497 .internal_flags = NL80211_FLAG_NEED_WDEV | 12498 NL80211_FLAG_NEED_RTNL, 12499 }, 12500 { 12501 .cmd = NL80211_CMD_SET_INTERFACE, 12502 .doit = nl80211_set_interface, 12503 .policy = nl80211_policy, 12504 .flags = GENL_UNS_ADMIN_PERM, 12505 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12506 NL80211_FLAG_NEED_RTNL, 12507 }, 12508 { 12509 .cmd = NL80211_CMD_NEW_INTERFACE, 12510 .doit = nl80211_new_interface, 12511 .policy = nl80211_policy, 12512 .flags = GENL_UNS_ADMIN_PERM, 12513 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12514 NL80211_FLAG_NEED_RTNL, 12515 }, 12516 { 12517 .cmd = NL80211_CMD_DEL_INTERFACE, 12518 .doit = nl80211_del_interface, 12519 .policy = nl80211_policy, 12520 .flags = GENL_UNS_ADMIN_PERM, 12521 .internal_flags = NL80211_FLAG_NEED_WDEV | 12522 NL80211_FLAG_NEED_RTNL, 12523 }, 12524 { 12525 .cmd = NL80211_CMD_GET_KEY, 12526 .doit = nl80211_get_key, 12527 .policy = nl80211_policy, 12528 .flags = GENL_UNS_ADMIN_PERM, 12529 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12530 NL80211_FLAG_NEED_RTNL, 12531 }, 12532 { 12533 .cmd = NL80211_CMD_SET_KEY, 12534 .doit = nl80211_set_key, 12535 .policy = nl80211_policy, 12536 .flags = GENL_UNS_ADMIN_PERM, 12537 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12538 NL80211_FLAG_NEED_RTNL | 12539 NL80211_FLAG_CLEAR_SKB, 12540 }, 12541 { 12542 .cmd = NL80211_CMD_NEW_KEY, 12543 .doit = nl80211_new_key, 12544 .policy = nl80211_policy, 12545 .flags = GENL_UNS_ADMIN_PERM, 12546 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12547 NL80211_FLAG_NEED_RTNL | 12548 NL80211_FLAG_CLEAR_SKB, 12549 }, 12550 { 12551 .cmd = NL80211_CMD_DEL_KEY, 12552 .doit = nl80211_del_key, 12553 .policy = nl80211_policy, 12554 .flags = GENL_UNS_ADMIN_PERM, 12555 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12556 NL80211_FLAG_NEED_RTNL, 12557 }, 12558 { 12559 .cmd = NL80211_CMD_SET_BEACON, 12560 .policy = nl80211_policy, 12561 .flags = GENL_UNS_ADMIN_PERM, 12562 .doit = nl80211_set_beacon, 12563 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12564 NL80211_FLAG_NEED_RTNL, 12565 }, 12566 { 12567 .cmd = NL80211_CMD_START_AP, 12568 .policy = nl80211_policy, 12569 .flags = GENL_UNS_ADMIN_PERM, 12570 .doit = nl80211_start_ap, 12571 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12572 NL80211_FLAG_NEED_RTNL, 12573 }, 12574 { 12575 .cmd = NL80211_CMD_STOP_AP, 12576 .policy = nl80211_policy, 12577 .flags = GENL_UNS_ADMIN_PERM, 12578 .doit = nl80211_stop_ap, 12579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12580 NL80211_FLAG_NEED_RTNL, 12581 }, 12582 { 12583 .cmd = NL80211_CMD_GET_STATION, 12584 .doit = nl80211_get_station, 12585 .dumpit = nl80211_dump_station, 12586 .policy = nl80211_policy, 12587 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12588 NL80211_FLAG_NEED_RTNL, 12589 }, 12590 { 12591 .cmd = NL80211_CMD_SET_STATION, 12592 .doit = nl80211_set_station, 12593 .policy = nl80211_policy, 12594 .flags = GENL_UNS_ADMIN_PERM, 12595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12596 NL80211_FLAG_NEED_RTNL, 12597 }, 12598 { 12599 .cmd = NL80211_CMD_NEW_STATION, 12600 .doit = nl80211_new_station, 12601 .policy = nl80211_policy, 12602 .flags = GENL_UNS_ADMIN_PERM, 12603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12604 NL80211_FLAG_NEED_RTNL, 12605 }, 12606 { 12607 .cmd = NL80211_CMD_DEL_STATION, 12608 .doit = nl80211_del_station, 12609 .policy = nl80211_policy, 12610 .flags = GENL_UNS_ADMIN_PERM, 12611 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12612 NL80211_FLAG_NEED_RTNL, 12613 }, 12614 { 12615 .cmd = NL80211_CMD_GET_MPATH, 12616 .doit = nl80211_get_mpath, 12617 .dumpit = nl80211_dump_mpath, 12618 .policy = nl80211_policy, 12619 .flags = GENL_UNS_ADMIN_PERM, 12620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12621 NL80211_FLAG_NEED_RTNL, 12622 }, 12623 { 12624 .cmd = NL80211_CMD_GET_MPP, 12625 .doit = nl80211_get_mpp, 12626 .dumpit = nl80211_dump_mpp, 12627 .policy = nl80211_policy, 12628 .flags = GENL_UNS_ADMIN_PERM, 12629 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12630 NL80211_FLAG_NEED_RTNL, 12631 }, 12632 { 12633 .cmd = NL80211_CMD_SET_MPATH, 12634 .doit = nl80211_set_mpath, 12635 .policy = nl80211_policy, 12636 .flags = GENL_UNS_ADMIN_PERM, 12637 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12638 NL80211_FLAG_NEED_RTNL, 12639 }, 12640 { 12641 .cmd = NL80211_CMD_NEW_MPATH, 12642 .doit = nl80211_new_mpath, 12643 .policy = nl80211_policy, 12644 .flags = GENL_UNS_ADMIN_PERM, 12645 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12646 NL80211_FLAG_NEED_RTNL, 12647 }, 12648 { 12649 .cmd = NL80211_CMD_DEL_MPATH, 12650 .doit = nl80211_del_mpath, 12651 .policy = nl80211_policy, 12652 .flags = GENL_UNS_ADMIN_PERM, 12653 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12654 NL80211_FLAG_NEED_RTNL, 12655 }, 12656 { 12657 .cmd = NL80211_CMD_SET_BSS, 12658 .doit = nl80211_set_bss, 12659 .policy = nl80211_policy, 12660 .flags = GENL_UNS_ADMIN_PERM, 12661 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12662 NL80211_FLAG_NEED_RTNL, 12663 }, 12664 { 12665 .cmd = NL80211_CMD_GET_REG, 12666 .doit = nl80211_get_reg_do, 12667 .dumpit = nl80211_get_reg_dump, 12668 .policy = nl80211_policy, 12669 .internal_flags = NL80211_FLAG_NEED_RTNL, 12670 /* can be retrieved by unprivileged users */ 12671 }, 12672 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 12673 { 12674 .cmd = NL80211_CMD_SET_REG, 12675 .doit = nl80211_set_reg, 12676 .policy = nl80211_policy, 12677 .flags = GENL_ADMIN_PERM, 12678 .internal_flags = NL80211_FLAG_NEED_RTNL, 12679 }, 12680 #endif 12681 { 12682 .cmd = NL80211_CMD_REQ_SET_REG, 12683 .doit = nl80211_req_set_reg, 12684 .policy = nl80211_policy, 12685 .flags = GENL_ADMIN_PERM, 12686 }, 12687 { 12688 .cmd = NL80211_CMD_GET_MESH_CONFIG, 12689 .doit = nl80211_get_mesh_config, 12690 .policy = nl80211_policy, 12691 /* can be retrieved by unprivileged users */ 12692 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12693 NL80211_FLAG_NEED_RTNL, 12694 }, 12695 { 12696 .cmd = NL80211_CMD_SET_MESH_CONFIG, 12697 .doit = nl80211_update_mesh_config, 12698 .policy = nl80211_policy, 12699 .flags = GENL_UNS_ADMIN_PERM, 12700 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12701 NL80211_FLAG_NEED_RTNL, 12702 }, 12703 { 12704 .cmd = NL80211_CMD_TRIGGER_SCAN, 12705 .doit = nl80211_trigger_scan, 12706 .policy = nl80211_policy, 12707 .flags = GENL_UNS_ADMIN_PERM, 12708 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12709 NL80211_FLAG_NEED_RTNL, 12710 }, 12711 { 12712 .cmd = NL80211_CMD_ABORT_SCAN, 12713 .doit = nl80211_abort_scan, 12714 .policy = nl80211_policy, 12715 .flags = GENL_UNS_ADMIN_PERM, 12716 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12717 NL80211_FLAG_NEED_RTNL, 12718 }, 12719 { 12720 .cmd = NL80211_CMD_GET_SCAN, 12721 .policy = nl80211_policy, 12722 .dumpit = nl80211_dump_scan, 12723 }, 12724 { 12725 .cmd = NL80211_CMD_START_SCHED_SCAN, 12726 .doit = nl80211_start_sched_scan, 12727 .policy = nl80211_policy, 12728 .flags = GENL_UNS_ADMIN_PERM, 12729 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12730 NL80211_FLAG_NEED_RTNL, 12731 }, 12732 { 12733 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 12734 .doit = nl80211_stop_sched_scan, 12735 .policy = nl80211_policy, 12736 .flags = GENL_UNS_ADMIN_PERM, 12737 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12738 NL80211_FLAG_NEED_RTNL, 12739 }, 12740 { 12741 .cmd = NL80211_CMD_AUTHENTICATE, 12742 .doit = nl80211_authenticate, 12743 .policy = nl80211_policy, 12744 .flags = GENL_UNS_ADMIN_PERM, 12745 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12746 NL80211_FLAG_NEED_RTNL | 12747 NL80211_FLAG_CLEAR_SKB, 12748 }, 12749 { 12750 .cmd = NL80211_CMD_ASSOCIATE, 12751 .doit = nl80211_associate, 12752 .policy = nl80211_policy, 12753 .flags = GENL_UNS_ADMIN_PERM, 12754 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12755 NL80211_FLAG_NEED_RTNL, 12756 }, 12757 { 12758 .cmd = NL80211_CMD_DEAUTHENTICATE, 12759 .doit = nl80211_deauthenticate, 12760 .policy = nl80211_policy, 12761 .flags = GENL_UNS_ADMIN_PERM, 12762 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12763 NL80211_FLAG_NEED_RTNL, 12764 }, 12765 { 12766 .cmd = NL80211_CMD_DISASSOCIATE, 12767 .doit = nl80211_disassociate, 12768 .policy = nl80211_policy, 12769 .flags = GENL_UNS_ADMIN_PERM, 12770 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12771 NL80211_FLAG_NEED_RTNL, 12772 }, 12773 { 12774 .cmd = NL80211_CMD_JOIN_IBSS, 12775 .doit = nl80211_join_ibss, 12776 .policy = nl80211_policy, 12777 .flags = GENL_UNS_ADMIN_PERM, 12778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12779 NL80211_FLAG_NEED_RTNL, 12780 }, 12781 { 12782 .cmd = NL80211_CMD_LEAVE_IBSS, 12783 .doit = nl80211_leave_ibss, 12784 .policy = nl80211_policy, 12785 .flags = GENL_UNS_ADMIN_PERM, 12786 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12787 NL80211_FLAG_NEED_RTNL, 12788 }, 12789 #ifdef CONFIG_NL80211_TESTMODE 12790 { 12791 .cmd = NL80211_CMD_TESTMODE, 12792 .doit = nl80211_testmode_do, 12793 .dumpit = nl80211_testmode_dump, 12794 .policy = nl80211_policy, 12795 .flags = GENL_UNS_ADMIN_PERM, 12796 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12797 NL80211_FLAG_NEED_RTNL, 12798 }, 12799 #endif 12800 { 12801 .cmd = NL80211_CMD_CONNECT, 12802 .doit = nl80211_connect, 12803 .policy = nl80211_policy, 12804 .flags = GENL_UNS_ADMIN_PERM, 12805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12806 NL80211_FLAG_NEED_RTNL, 12807 }, 12808 { 12809 .cmd = NL80211_CMD_UPDATE_CONNECT_PARAMS, 12810 .doit = nl80211_update_connect_params, 12811 .policy = nl80211_policy, 12812 .flags = GENL_ADMIN_PERM, 12813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12814 NL80211_FLAG_NEED_RTNL, 12815 }, 12816 { 12817 .cmd = NL80211_CMD_DISCONNECT, 12818 .doit = nl80211_disconnect, 12819 .policy = nl80211_policy, 12820 .flags = GENL_UNS_ADMIN_PERM, 12821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12822 NL80211_FLAG_NEED_RTNL, 12823 }, 12824 { 12825 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 12826 .doit = nl80211_wiphy_netns, 12827 .policy = nl80211_policy, 12828 .flags = GENL_UNS_ADMIN_PERM, 12829 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12830 NL80211_FLAG_NEED_RTNL, 12831 }, 12832 { 12833 .cmd = NL80211_CMD_GET_SURVEY, 12834 .policy = nl80211_policy, 12835 .dumpit = nl80211_dump_survey, 12836 }, 12837 { 12838 .cmd = NL80211_CMD_SET_PMKSA, 12839 .doit = nl80211_setdel_pmksa, 12840 .policy = nl80211_policy, 12841 .flags = GENL_UNS_ADMIN_PERM, 12842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12843 NL80211_FLAG_NEED_RTNL, 12844 }, 12845 { 12846 .cmd = NL80211_CMD_DEL_PMKSA, 12847 .doit = nl80211_setdel_pmksa, 12848 .policy = nl80211_policy, 12849 .flags = GENL_UNS_ADMIN_PERM, 12850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12851 NL80211_FLAG_NEED_RTNL, 12852 }, 12853 { 12854 .cmd = NL80211_CMD_FLUSH_PMKSA, 12855 .doit = nl80211_flush_pmksa, 12856 .policy = nl80211_policy, 12857 .flags = GENL_UNS_ADMIN_PERM, 12858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12859 NL80211_FLAG_NEED_RTNL, 12860 }, 12861 { 12862 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 12863 .doit = nl80211_remain_on_channel, 12864 .policy = nl80211_policy, 12865 .flags = GENL_UNS_ADMIN_PERM, 12866 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12867 NL80211_FLAG_NEED_RTNL, 12868 }, 12869 { 12870 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 12871 .doit = nl80211_cancel_remain_on_channel, 12872 .policy = nl80211_policy, 12873 .flags = GENL_UNS_ADMIN_PERM, 12874 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12875 NL80211_FLAG_NEED_RTNL, 12876 }, 12877 { 12878 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 12879 .doit = nl80211_set_tx_bitrate_mask, 12880 .policy = nl80211_policy, 12881 .flags = GENL_UNS_ADMIN_PERM, 12882 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12883 NL80211_FLAG_NEED_RTNL, 12884 }, 12885 { 12886 .cmd = NL80211_CMD_REGISTER_FRAME, 12887 .doit = nl80211_register_mgmt, 12888 .policy = nl80211_policy, 12889 .flags = GENL_UNS_ADMIN_PERM, 12890 .internal_flags = NL80211_FLAG_NEED_WDEV | 12891 NL80211_FLAG_NEED_RTNL, 12892 }, 12893 { 12894 .cmd = NL80211_CMD_FRAME, 12895 .doit = nl80211_tx_mgmt, 12896 .policy = nl80211_policy, 12897 .flags = GENL_UNS_ADMIN_PERM, 12898 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12899 NL80211_FLAG_NEED_RTNL, 12900 }, 12901 { 12902 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 12903 .doit = nl80211_tx_mgmt_cancel_wait, 12904 .policy = nl80211_policy, 12905 .flags = GENL_UNS_ADMIN_PERM, 12906 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 12907 NL80211_FLAG_NEED_RTNL, 12908 }, 12909 { 12910 .cmd = NL80211_CMD_SET_POWER_SAVE, 12911 .doit = nl80211_set_power_save, 12912 .policy = nl80211_policy, 12913 .flags = GENL_UNS_ADMIN_PERM, 12914 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12915 NL80211_FLAG_NEED_RTNL, 12916 }, 12917 { 12918 .cmd = NL80211_CMD_GET_POWER_SAVE, 12919 .doit = nl80211_get_power_save, 12920 .policy = nl80211_policy, 12921 /* can be retrieved by unprivileged users */ 12922 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12923 NL80211_FLAG_NEED_RTNL, 12924 }, 12925 { 12926 .cmd = NL80211_CMD_SET_CQM, 12927 .doit = nl80211_set_cqm, 12928 .policy = nl80211_policy, 12929 .flags = GENL_UNS_ADMIN_PERM, 12930 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12931 NL80211_FLAG_NEED_RTNL, 12932 }, 12933 { 12934 .cmd = NL80211_CMD_SET_CHANNEL, 12935 .doit = nl80211_set_channel, 12936 .policy = nl80211_policy, 12937 .flags = GENL_UNS_ADMIN_PERM, 12938 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12939 NL80211_FLAG_NEED_RTNL, 12940 }, 12941 { 12942 .cmd = NL80211_CMD_SET_WDS_PEER, 12943 .doit = nl80211_set_wds_peer, 12944 .policy = nl80211_policy, 12945 .flags = GENL_UNS_ADMIN_PERM, 12946 .internal_flags = NL80211_FLAG_NEED_NETDEV | 12947 NL80211_FLAG_NEED_RTNL, 12948 }, 12949 { 12950 .cmd = NL80211_CMD_JOIN_MESH, 12951 .doit = nl80211_join_mesh, 12952 .policy = nl80211_policy, 12953 .flags = GENL_UNS_ADMIN_PERM, 12954 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12955 NL80211_FLAG_NEED_RTNL, 12956 }, 12957 { 12958 .cmd = NL80211_CMD_LEAVE_MESH, 12959 .doit = nl80211_leave_mesh, 12960 .policy = nl80211_policy, 12961 .flags = GENL_UNS_ADMIN_PERM, 12962 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12963 NL80211_FLAG_NEED_RTNL, 12964 }, 12965 { 12966 .cmd = NL80211_CMD_JOIN_OCB, 12967 .doit = nl80211_join_ocb, 12968 .policy = nl80211_policy, 12969 .flags = GENL_UNS_ADMIN_PERM, 12970 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12971 NL80211_FLAG_NEED_RTNL, 12972 }, 12973 { 12974 .cmd = NL80211_CMD_LEAVE_OCB, 12975 .doit = nl80211_leave_ocb, 12976 .policy = nl80211_policy, 12977 .flags = GENL_UNS_ADMIN_PERM, 12978 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 12979 NL80211_FLAG_NEED_RTNL, 12980 }, 12981 #ifdef CONFIG_PM 12982 { 12983 .cmd = NL80211_CMD_GET_WOWLAN, 12984 .doit = nl80211_get_wowlan, 12985 .policy = nl80211_policy, 12986 /* can be retrieved by unprivileged users */ 12987 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12988 NL80211_FLAG_NEED_RTNL, 12989 }, 12990 { 12991 .cmd = NL80211_CMD_SET_WOWLAN, 12992 .doit = nl80211_set_wowlan, 12993 .policy = nl80211_policy, 12994 .flags = GENL_UNS_ADMIN_PERM, 12995 .internal_flags = NL80211_FLAG_NEED_WIPHY | 12996 NL80211_FLAG_NEED_RTNL, 12997 }, 12998 #endif 12999 { 13000 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 13001 .doit = nl80211_set_rekey_data, 13002 .policy = nl80211_policy, 13003 .flags = GENL_UNS_ADMIN_PERM, 13004 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13005 NL80211_FLAG_NEED_RTNL | 13006 NL80211_FLAG_CLEAR_SKB, 13007 }, 13008 { 13009 .cmd = NL80211_CMD_TDLS_MGMT, 13010 .doit = nl80211_tdls_mgmt, 13011 .policy = nl80211_policy, 13012 .flags = GENL_UNS_ADMIN_PERM, 13013 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13014 NL80211_FLAG_NEED_RTNL, 13015 }, 13016 { 13017 .cmd = NL80211_CMD_TDLS_OPER, 13018 .doit = nl80211_tdls_oper, 13019 .policy = nl80211_policy, 13020 .flags = GENL_UNS_ADMIN_PERM, 13021 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13022 NL80211_FLAG_NEED_RTNL, 13023 }, 13024 { 13025 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 13026 .doit = nl80211_register_unexpected_frame, 13027 .policy = nl80211_policy, 13028 .flags = GENL_UNS_ADMIN_PERM, 13029 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13030 NL80211_FLAG_NEED_RTNL, 13031 }, 13032 { 13033 .cmd = NL80211_CMD_PROBE_CLIENT, 13034 .doit = nl80211_probe_client, 13035 .policy = nl80211_policy, 13036 .flags = GENL_UNS_ADMIN_PERM, 13037 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13038 NL80211_FLAG_NEED_RTNL, 13039 }, 13040 { 13041 .cmd = NL80211_CMD_REGISTER_BEACONS, 13042 .doit = nl80211_register_beacons, 13043 .policy = nl80211_policy, 13044 .flags = GENL_UNS_ADMIN_PERM, 13045 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13046 NL80211_FLAG_NEED_RTNL, 13047 }, 13048 { 13049 .cmd = NL80211_CMD_SET_NOACK_MAP, 13050 .doit = nl80211_set_noack_map, 13051 .policy = nl80211_policy, 13052 .flags = GENL_UNS_ADMIN_PERM, 13053 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13054 NL80211_FLAG_NEED_RTNL, 13055 }, 13056 { 13057 .cmd = NL80211_CMD_START_P2P_DEVICE, 13058 .doit = nl80211_start_p2p_device, 13059 .policy = nl80211_policy, 13060 .flags = GENL_UNS_ADMIN_PERM, 13061 .internal_flags = NL80211_FLAG_NEED_WDEV | 13062 NL80211_FLAG_NEED_RTNL, 13063 }, 13064 { 13065 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 13066 .doit = nl80211_stop_p2p_device, 13067 .policy = nl80211_policy, 13068 .flags = GENL_UNS_ADMIN_PERM, 13069 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13070 NL80211_FLAG_NEED_RTNL, 13071 }, 13072 { 13073 .cmd = NL80211_CMD_START_NAN, 13074 .doit = nl80211_start_nan, 13075 .policy = nl80211_policy, 13076 .flags = GENL_ADMIN_PERM, 13077 .internal_flags = NL80211_FLAG_NEED_WDEV | 13078 NL80211_FLAG_NEED_RTNL, 13079 }, 13080 { 13081 .cmd = NL80211_CMD_STOP_NAN, 13082 .doit = nl80211_stop_nan, 13083 .policy = nl80211_policy, 13084 .flags = GENL_ADMIN_PERM, 13085 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13086 NL80211_FLAG_NEED_RTNL, 13087 }, 13088 { 13089 .cmd = NL80211_CMD_ADD_NAN_FUNCTION, 13090 .doit = nl80211_nan_add_func, 13091 .policy = nl80211_policy, 13092 .flags = GENL_ADMIN_PERM, 13093 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13094 NL80211_FLAG_NEED_RTNL, 13095 }, 13096 { 13097 .cmd = NL80211_CMD_DEL_NAN_FUNCTION, 13098 .doit = nl80211_nan_del_func, 13099 .policy = nl80211_policy, 13100 .flags = GENL_ADMIN_PERM, 13101 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13102 NL80211_FLAG_NEED_RTNL, 13103 }, 13104 { 13105 .cmd = NL80211_CMD_CHANGE_NAN_CONFIG, 13106 .doit = nl80211_nan_change_config, 13107 .policy = nl80211_policy, 13108 .flags = GENL_ADMIN_PERM, 13109 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13110 NL80211_FLAG_NEED_RTNL, 13111 }, 13112 { 13113 .cmd = NL80211_CMD_SET_MCAST_RATE, 13114 .doit = nl80211_set_mcast_rate, 13115 .policy = nl80211_policy, 13116 .flags = GENL_UNS_ADMIN_PERM, 13117 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13118 NL80211_FLAG_NEED_RTNL, 13119 }, 13120 { 13121 .cmd = NL80211_CMD_SET_MAC_ACL, 13122 .doit = nl80211_set_mac_acl, 13123 .policy = nl80211_policy, 13124 .flags = GENL_UNS_ADMIN_PERM, 13125 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13126 NL80211_FLAG_NEED_RTNL, 13127 }, 13128 { 13129 .cmd = NL80211_CMD_RADAR_DETECT, 13130 .doit = nl80211_start_radar_detection, 13131 .policy = nl80211_policy, 13132 .flags = GENL_UNS_ADMIN_PERM, 13133 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13134 NL80211_FLAG_NEED_RTNL, 13135 }, 13136 { 13137 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 13138 .doit = nl80211_get_protocol_features, 13139 .policy = nl80211_policy, 13140 }, 13141 { 13142 .cmd = NL80211_CMD_UPDATE_FT_IES, 13143 .doit = nl80211_update_ft_ies, 13144 .policy = nl80211_policy, 13145 .flags = GENL_UNS_ADMIN_PERM, 13146 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13147 NL80211_FLAG_NEED_RTNL, 13148 }, 13149 { 13150 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 13151 .doit = nl80211_crit_protocol_start, 13152 .policy = nl80211_policy, 13153 .flags = GENL_UNS_ADMIN_PERM, 13154 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13155 NL80211_FLAG_NEED_RTNL, 13156 }, 13157 { 13158 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 13159 .doit = nl80211_crit_protocol_stop, 13160 .policy = nl80211_policy, 13161 .flags = GENL_UNS_ADMIN_PERM, 13162 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 13163 NL80211_FLAG_NEED_RTNL, 13164 }, 13165 { 13166 .cmd = NL80211_CMD_GET_COALESCE, 13167 .doit = nl80211_get_coalesce, 13168 .policy = nl80211_policy, 13169 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13170 NL80211_FLAG_NEED_RTNL, 13171 }, 13172 { 13173 .cmd = NL80211_CMD_SET_COALESCE, 13174 .doit = nl80211_set_coalesce, 13175 .policy = nl80211_policy, 13176 .flags = GENL_UNS_ADMIN_PERM, 13177 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13178 NL80211_FLAG_NEED_RTNL, 13179 }, 13180 { 13181 .cmd = NL80211_CMD_CHANNEL_SWITCH, 13182 .doit = nl80211_channel_switch, 13183 .policy = nl80211_policy, 13184 .flags = GENL_UNS_ADMIN_PERM, 13185 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13186 NL80211_FLAG_NEED_RTNL, 13187 }, 13188 { 13189 .cmd = NL80211_CMD_VENDOR, 13190 .doit = nl80211_vendor_cmd, 13191 .dumpit = nl80211_vendor_cmd_dump, 13192 .policy = nl80211_policy, 13193 .flags = GENL_UNS_ADMIN_PERM, 13194 .internal_flags = NL80211_FLAG_NEED_WIPHY | 13195 NL80211_FLAG_NEED_RTNL, 13196 }, 13197 { 13198 .cmd = NL80211_CMD_SET_QOS_MAP, 13199 .doit = nl80211_set_qos_map, 13200 .policy = nl80211_policy, 13201 .flags = GENL_UNS_ADMIN_PERM, 13202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13203 NL80211_FLAG_NEED_RTNL, 13204 }, 13205 { 13206 .cmd = NL80211_CMD_ADD_TX_TS, 13207 .doit = nl80211_add_tx_ts, 13208 .policy = nl80211_policy, 13209 .flags = GENL_UNS_ADMIN_PERM, 13210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13211 NL80211_FLAG_NEED_RTNL, 13212 }, 13213 { 13214 .cmd = NL80211_CMD_DEL_TX_TS, 13215 .doit = nl80211_del_tx_ts, 13216 .policy = nl80211_policy, 13217 .flags = GENL_UNS_ADMIN_PERM, 13218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13219 NL80211_FLAG_NEED_RTNL, 13220 }, 13221 { 13222 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 13223 .doit = nl80211_tdls_channel_switch, 13224 .policy = nl80211_policy, 13225 .flags = GENL_UNS_ADMIN_PERM, 13226 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13227 NL80211_FLAG_NEED_RTNL, 13228 }, 13229 { 13230 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 13231 .doit = nl80211_tdls_cancel_channel_switch, 13232 .policy = nl80211_policy, 13233 .flags = GENL_UNS_ADMIN_PERM, 13234 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13235 NL80211_FLAG_NEED_RTNL, 13236 }, 13237 { 13238 .cmd = NL80211_CMD_SET_MULTICAST_TO_UNICAST, 13239 .doit = nl80211_set_multicast_to_unicast, 13240 .policy = nl80211_policy, 13241 .flags = GENL_UNS_ADMIN_PERM, 13242 .internal_flags = NL80211_FLAG_NEED_NETDEV | 13243 NL80211_FLAG_NEED_RTNL, 13244 }, 13245 { 13246 .cmd = NL80211_CMD_SET_PMK, 13247 .doit = nl80211_set_pmk, 13248 .policy = nl80211_policy, 13249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13250 NL80211_FLAG_NEED_RTNL, 13251 }, 13252 { 13253 .cmd = NL80211_CMD_DEL_PMK, 13254 .doit = nl80211_del_pmk, 13255 .policy = nl80211_policy, 13256 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 13257 NL80211_FLAG_NEED_RTNL, 13258 }, 13259 13260 }; 13261 13262 static struct genl_family nl80211_fam __ro_after_init = { 13263 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 13264 .hdrsize = 0, /* no private header */ 13265 .version = 1, /* no particular meaning now */ 13266 .maxattr = NL80211_ATTR_MAX, 13267 .netnsok = true, 13268 .pre_doit = nl80211_pre_doit, 13269 .post_doit = nl80211_post_doit, 13270 .module = THIS_MODULE, 13271 .ops = nl80211_ops, 13272 .n_ops = ARRAY_SIZE(nl80211_ops), 13273 .mcgrps = nl80211_mcgrps, 13274 .n_mcgrps = ARRAY_SIZE(nl80211_mcgrps), 13275 }; 13276 13277 /* notification functions */ 13278 13279 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 13280 enum nl80211_commands cmd) 13281 { 13282 struct sk_buff *msg; 13283 struct nl80211_dump_wiphy_state state = {}; 13284 13285 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 13286 cmd != NL80211_CMD_DEL_WIPHY); 13287 13288 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13289 if (!msg) 13290 return; 13291 13292 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 13293 nlmsg_free(msg); 13294 return; 13295 } 13296 13297 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13298 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13299 } 13300 13301 void nl80211_notify_iface(struct cfg80211_registered_device *rdev, 13302 struct wireless_dev *wdev, 13303 enum nl80211_commands cmd) 13304 { 13305 struct sk_buff *msg; 13306 13307 WARN_ON(cmd != NL80211_CMD_NEW_INTERFACE && 13308 cmd != NL80211_CMD_DEL_INTERFACE); 13309 13310 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13311 if (!msg) 13312 return; 13313 13314 if (nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, 13315 cmd == NL80211_CMD_DEL_INTERFACE) < 0) { 13316 nlmsg_free(msg); 13317 return; 13318 } 13319 13320 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13321 NL80211_MCGRP_CONFIG, GFP_KERNEL); 13322 } 13323 13324 static int nl80211_add_scan_req(struct sk_buff *msg, 13325 struct cfg80211_registered_device *rdev) 13326 { 13327 struct cfg80211_scan_request *req = rdev->scan_req; 13328 struct nlattr *nest; 13329 int i; 13330 13331 if (WARN_ON(!req)) 13332 return 0; 13333 13334 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 13335 if (!nest) 13336 goto nla_put_failure; 13337 for (i = 0; i < req->n_ssids; i++) { 13338 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 13339 goto nla_put_failure; 13340 } 13341 nla_nest_end(msg, nest); 13342 13343 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 13344 if (!nest) 13345 goto nla_put_failure; 13346 for (i = 0; i < req->n_channels; i++) { 13347 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 13348 goto nla_put_failure; 13349 } 13350 nla_nest_end(msg, nest); 13351 13352 if (req->ie && 13353 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 13354 goto nla_put_failure; 13355 13356 if (req->flags && 13357 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 13358 goto nla_put_failure; 13359 13360 if (req->info.scan_start_tsf && 13361 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 13362 req->info.scan_start_tsf, NL80211_BSS_PAD) || 13363 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 13364 req->info.tsf_bssid))) 13365 goto nla_put_failure; 13366 13367 return 0; 13368 nla_put_failure: 13369 return -ENOBUFS; 13370 } 13371 13372 static int nl80211_prep_scan_msg(struct sk_buff *msg, 13373 struct cfg80211_registered_device *rdev, 13374 struct wireless_dev *wdev, 13375 u32 portid, u32 seq, int flags, 13376 u32 cmd) 13377 { 13378 void *hdr; 13379 13380 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 13381 if (!hdr) 13382 return -1; 13383 13384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13385 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13386 wdev->netdev->ifindex)) || 13387 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13388 NL80211_ATTR_PAD)) 13389 goto nla_put_failure; 13390 13391 /* ignore errors and send incomplete event anyway */ 13392 nl80211_add_scan_req(msg, rdev); 13393 13394 genlmsg_end(msg, hdr); 13395 return 0; 13396 13397 nla_put_failure: 13398 genlmsg_cancel(msg, hdr); 13399 return -EMSGSIZE; 13400 } 13401 13402 static int 13403 nl80211_prep_sched_scan_msg(struct sk_buff *msg, 13404 struct cfg80211_sched_scan_request *req, u32 cmd) 13405 { 13406 void *hdr; 13407 13408 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13409 if (!hdr) 13410 return -1; 13411 13412 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, 13413 wiphy_to_rdev(req->wiphy)->wiphy_idx) || 13414 nla_put_u32(msg, NL80211_ATTR_IFINDEX, req->dev->ifindex) || 13415 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, req->reqid, 13416 NL80211_ATTR_PAD)) 13417 goto nla_put_failure; 13418 13419 genlmsg_end(msg, hdr); 13420 return 0; 13421 13422 nla_put_failure: 13423 genlmsg_cancel(msg, hdr); 13424 return -EMSGSIZE; 13425 } 13426 13427 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 13428 struct wireless_dev *wdev) 13429 { 13430 struct sk_buff *msg; 13431 13432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13433 if (!msg) 13434 return; 13435 13436 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 13437 NL80211_CMD_TRIGGER_SCAN) < 0) { 13438 nlmsg_free(msg); 13439 return; 13440 } 13441 13442 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13443 NL80211_MCGRP_SCAN, GFP_KERNEL); 13444 } 13445 13446 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 13447 struct wireless_dev *wdev, bool aborted) 13448 { 13449 struct sk_buff *msg; 13450 13451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13452 if (!msg) 13453 return NULL; 13454 13455 if (nl80211_prep_scan_msg(msg, rdev, wdev, 0, 0, 0, 13456 aborted ? NL80211_CMD_SCAN_ABORTED : 13457 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 13458 nlmsg_free(msg); 13459 return NULL; 13460 } 13461 13462 return msg; 13463 } 13464 13465 /* send message created by nl80211_build_scan_msg() */ 13466 void nl80211_send_scan_msg(struct cfg80211_registered_device *rdev, 13467 struct sk_buff *msg) 13468 { 13469 if (!msg) 13470 return; 13471 13472 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13473 NL80211_MCGRP_SCAN, GFP_KERNEL); 13474 } 13475 13476 void nl80211_send_sched_scan(struct cfg80211_sched_scan_request *req, u32 cmd) 13477 { 13478 struct sk_buff *msg; 13479 13480 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13481 if (!msg) 13482 return; 13483 13484 if (nl80211_prep_sched_scan_msg(msg, req, cmd) < 0) { 13485 nlmsg_free(msg); 13486 return; 13487 } 13488 13489 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(req->wiphy), msg, 0, 13490 NL80211_MCGRP_SCAN, GFP_KERNEL); 13491 } 13492 13493 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 13494 struct regulatory_request *request) 13495 { 13496 /* Userspace can always count this one always being set */ 13497 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 13498 goto nla_put_failure; 13499 13500 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 13501 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13502 NL80211_REGDOM_TYPE_WORLD)) 13503 goto nla_put_failure; 13504 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 13505 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13506 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 13507 goto nla_put_failure; 13508 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 13509 request->intersect) { 13510 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13511 NL80211_REGDOM_TYPE_INTERSECTION)) 13512 goto nla_put_failure; 13513 } else { 13514 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 13515 NL80211_REGDOM_TYPE_COUNTRY) || 13516 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 13517 request->alpha2)) 13518 goto nla_put_failure; 13519 } 13520 13521 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 13522 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 13523 13524 if (wiphy && 13525 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 13526 goto nla_put_failure; 13527 13528 if (wiphy && 13529 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 13530 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 13531 goto nla_put_failure; 13532 } 13533 13534 return true; 13535 13536 nla_put_failure: 13537 return false; 13538 } 13539 13540 /* 13541 * This can happen on global regulatory changes or device specific settings 13542 * based on custom regulatory domains. 13543 */ 13544 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 13545 struct regulatory_request *request) 13546 { 13547 struct sk_buff *msg; 13548 void *hdr; 13549 13550 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13551 if (!msg) 13552 return; 13553 13554 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 13555 if (!hdr) { 13556 nlmsg_free(msg); 13557 return; 13558 } 13559 13560 if (nl80211_reg_change_event_fill(msg, request) == false) 13561 goto nla_put_failure; 13562 13563 genlmsg_end(msg, hdr); 13564 13565 rcu_read_lock(); 13566 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 13567 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 13568 rcu_read_unlock(); 13569 13570 return; 13571 13572 nla_put_failure: 13573 genlmsg_cancel(msg, hdr); 13574 nlmsg_free(msg); 13575 } 13576 13577 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 13578 struct net_device *netdev, 13579 const u8 *buf, size_t len, 13580 enum nl80211_commands cmd, gfp_t gfp, 13581 int uapsd_queues) 13582 { 13583 struct sk_buff *msg; 13584 void *hdr; 13585 13586 msg = nlmsg_new(100 + len, gfp); 13587 if (!msg) 13588 return; 13589 13590 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13591 if (!hdr) { 13592 nlmsg_free(msg); 13593 return; 13594 } 13595 13596 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13597 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13598 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 13599 goto nla_put_failure; 13600 13601 if (uapsd_queues >= 0) { 13602 struct nlattr *nla_wmm = 13603 nla_nest_start(msg, NL80211_ATTR_STA_WME); 13604 if (!nla_wmm) 13605 goto nla_put_failure; 13606 13607 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 13608 uapsd_queues)) 13609 goto nla_put_failure; 13610 13611 nla_nest_end(msg, nla_wmm); 13612 } 13613 13614 genlmsg_end(msg, hdr); 13615 13616 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13617 NL80211_MCGRP_MLME, gfp); 13618 return; 13619 13620 nla_put_failure: 13621 genlmsg_cancel(msg, hdr); 13622 nlmsg_free(msg); 13623 } 13624 13625 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 13626 struct net_device *netdev, const u8 *buf, 13627 size_t len, gfp_t gfp) 13628 { 13629 nl80211_send_mlme_event(rdev, netdev, buf, len, 13630 NL80211_CMD_AUTHENTICATE, gfp, -1); 13631 } 13632 13633 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 13634 struct net_device *netdev, const u8 *buf, 13635 size_t len, gfp_t gfp, int uapsd_queues) 13636 { 13637 nl80211_send_mlme_event(rdev, netdev, buf, len, 13638 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 13639 } 13640 13641 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 13642 struct net_device *netdev, const u8 *buf, 13643 size_t len, gfp_t gfp) 13644 { 13645 nl80211_send_mlme_event(rdev, netdev, buf, len, 13646 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 13647 } 13648 13649 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 13650 struct net_device *netdev, const u8 *buf, 13651 size_t len, gfp_t gfp) 13652 { 13653 nl80211_send_mlme_event(rdev, netdev, buf, len, 13654 NL80211_CMD_DISASSOCIATE, gfp, -1); 13655 } 13656 13657 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 13658 size_t len) 13659 { 13660 struct wireless_dev *wdev = dev->ieee80211_ptr; 13661 struct wiphy *wiphy = wdev->wiphy; 13662 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13663 const struct ieee80211_mgmt *mgmt = (void *)buf; 13664 u32 cmd; 13665 13666 if (WARN_ON(len < 2)) 13667 return; 13668 13669 if (ieee80211_is_deauth(mgmt->frame_control)) 13670 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 13671 else 13672 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 13673 13674 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 13675 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 13676 } 13677 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 13678 13679 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 13680 struct net_device *netdev, int cmd, 13681 const u8 *addr, gfp_t gfp) 13682 { 13683 struct sk_buff *msg; 13684 void *hdr; 13685 13686 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13687 if (!msg) 13688 return; 13689 13690 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 13691 if (!hdr) { 13692 nlmsg_free(msg); 13693 return; 13694 } 13695 13696 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13697 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13698 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 13699 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 13700 goto nla_put_failure; 13701 13702 genlmsg_end(msg, hdr); 13703 13704 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13705 NL80211_MCGRP_MLME, gfp); 13706 return; 13707 13708 nla_put_failure: 13709 genlmsg_cancel(msg, hdr); 13710 nlmsg_free(msg); 13711 } 13712 13713 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 13714 struct net_device *netdev, const u8 *addr, 13715 gfp_t gfp) 13716 { 13717 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 13718 addr, gfp); 13719 } 13720 13721 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 13722 struct net_device *netdev, const u8 *addr, 13723 gfp_t gfp) 13724 { 13725 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 13726 addr, gfp); 13727 } 13728 13729 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 13730 struct net_device *netdev, 13731 struct cfg80211_connect_resp_params *cr, 13732 gfp_t gfp) 13733 { 13734 struct sk_buff *msg; 13735 void *hdr; 13736 13737 msg = nlmsg_new(100 + cr->req_ie_len + cr->resp_ie_len + 13738 cr->fils_kek_len + cr->pmk_len + 13739 (cr->pmkid ? WLAN_PMKID_LEN : 0), gfp); 13740 if (!msg) 13741 return; 13742 13743 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 13744 if (!hdr) { 13745 nlmsg_free(msg); 13746 return; 13747 } 13748 13749 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13750 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13751 (cr->bssid && 13752 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, cr->bssid)) || 13753 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 13754 cr->status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 13755 cr->status) || 13756 (cr->status < 0 && 13757 (nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 13758 nla_put_u32(msg, NL80211_ATTR_TIMEOUT_REASON, 13759 cr->timeout_reason))) || 13760 (cr->req_ie && 13761 nla_put(msg, NL80211_ATTR_REQ_IE, cr->req_ie_len, cr->req_ie)) || 13762 (cr->resp_ie && 13763 nla_put(msg, NL80211_ATTR_RESP_IE, cr->resp_ie_len, 13764 cr->resp_ie)) || 13765 (cr->update_erp_next_seq_num && 13766 nla_put_u16(msg, NL80211_ATTR_FILS_ERP_NEXT_SEQ_NUM, 13767 cr->fils_erp_next_seq_num)) || 13768 (cr->status == WLAN_STATUS_SUCCESS && 13769 ((cr->fils_kek && 13770 nla_put(msg, NL80211_ATTR_FILS_KEK, cr->fils_kek_len, 13771 cr->fils_kek)) || 13772 (cr->pmk && 13773 nla_put(msg, NL80211_ATTR_PMK, cr->pmk_len, cr->pmk)) || 13774 (cr->pmkid && 13775 nla_put(msg, NL80211_ATTR_PMKID, WLAN_PMKID_LEN, cr->pmkid))))) 13776 goto nla_put_failure; 13777 13778 genlmsg_end(msg, hdr); 13779 13780 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13781 NL80211_MCGRP_MLME, gfp); 13782 return; 13783 13784 nla_put_failure: 13785 genlmsg_cancel(msg, hdr); 13786 nlmsg_free(msg); 13787 } 13788 13789 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 13790 struct net_device *netdev, 13791 struct cfg80211_roam_info *info, gfp_t gfp) 13792 { 13793 struct sk_buff *msg; 13794 void *hdr; 13795 const u8 *bssid = info->bss ? info->bss->bssid : info->bssid; 13796 13797 msg = nlmsg_new(100 + info->req_ie_len + info->resp_ie_len, gfp); 13798 if (!msg) 13799 return; 13800 13801 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 13802 if (!hdr) { 13803 nlmsg_free(msg); 13804 return; 13805 } 13806 13807 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13808 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13809 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 13810 (info->req_ie && 13811 nla_put(msg, NL80211_ATTR_REQ_IE, info->req_ie_len, 13812 info->req_ie)) || 13813 (info->resp_ie && 13814 nla_put(msg, NL80211_ATTR_RESP_IE, info->resp_ie_len, 13815 info->resp_ie)) || 13816 (info->authorized && 13817 nla_put_flag(msg, NL80211_ATTR_PORT_AUTHORIZED))) 13818 goto nla_put_failure; 13819 13820 genlmsg_end(msg, hdr); 13821 13822 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13823 NL80211_MCGRP_MLME, gfp); 13824 return; 13825 13826 nla_put_failure: 13827 genlmsg_cancel(msg, hdr); 13828 nlmsg_free(msg); 13829 } 13830 13831 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 13832 struct net_device *netdev, u16 reason, 13833 const u8 *ie, size_t ie_len, bool from_ap) 13834 { 13835 struct sk_buff *msg; 13836 void *hdr; 13837 13838 msg = nlmsg_new(100 + ie_len, GFP_KERNEL); 13839 if (!msg) 13840 return; 13841 13842 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 13843 if (!hdr) { 13844 nlmsg_free(msg); 13845 return; 13846 } 13847 13848 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13849 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13850 (from_ap && reason && 13851 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 13852 (from_ap && 13853 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 13854 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 13855 goto nla_put_failure; 13856 13857 genlmsg_end(msg, hdr); 13858 13859 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13860 NL80211_MCGRP_MLME, GFP_KERNEL); 13861 return; 13862 13863 nla_put_failure: 13864 genlmsg_cancel(msg, hdr); 13865 nlmsg_free(msg); 13866 } 13867 13868 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 13869 struct net_device *netdev, const u8 *bssid, 13870 gfp_t gfp) 13871 { 13872 struct sk_buff *msg; 13873 void *hdr; 13874 13875 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13876 if (!msg) 13877 return; 13878 13879 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 13880 if (!hdr) { 13881 nlmsg_free(msg); 13882 return; 13883 } 13884 13885 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13886 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13887 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 13888 goto nla_put_failure; 13889 13890 genlmsg_end(msg, hdr); 13891 13892 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13893 NL80211_MCGRP_MLME, gfp); 13894 return; 13895 13896 nla_put_failure: 13897 genlmsg_cancel(msg, hdr); 13898 nlmsg_free(msg); 13899 } 13900 13901 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 13902 const u8* ie, u8 ie_len, gfp_t gfp) 13903 { 13904 struct wireless_dev *wdev = dev->ieee80211_ptr; 13905 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13906 struct sk_buff *msg; 13907 void *hdr; 13908 13909 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 13910 return; 13911 13912 trace_cfg80211_notify_new_peer_candidate(dev, addr); 13913 13914 msg = nlmsg_new(100 + ie_len, gfp); 13915 if (!msg) 13916 return; 13917 13918 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 13919 if (!hdr) { 13920 nlmsg_free(msg); 13921 return; 13922 } 13923 13924 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13925 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13926 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 13927 (ie_len && ie && 13928 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 13929 goto nla_put_failure; 13930 13931 genlmsg_end(msg, hdr); 13932 13933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13934 NL80211_MCGRP_MLME, gfp); 13935 return; 13936 13937 nla_put_failure: 13938 genlmsg_cancel(msg, hdr); 13939 nlmsg_free(msg); 13940 } 13941 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 13942 13943 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 13944 struct net_device *netdev, const u8 *addr, 13945 enum nl80211_key_type key_type, int key_id, 13946 const u8 *tsc, gfp_t gfp) 13947 { 13948 struct sk_buff *msg; 13949 void *hdr; 13950 13951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13952 if (!msg) 13953 return; 13954 13955 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 13956 if (!hdr) { 13957 nlmsg_free(msg); 13958 return; 13959 } 13960 13961 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13962 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13963 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 13964 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 13965 (key_id != -1 && 13966 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 13967 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 13968 goto nla_put_failure; 13969 13970 genlmsg_end(msg, hdr); 13971 13972 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13973 NL80211_MCGRP_MLME, gfp); 13974 return; 13975 13976 nla_put_failure: 13977 genlmsg_cancel(msg, hdr); 13978 nlmsg_free(msg); 13979 } 13980 13981 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 13982 struct ieee80211_channel *channel_before, 13983 struct ieee80211_channel *channel_after) 13984 { 13985 struct sk_buff *msg; 13986 void *hdr; 13987 struct nlattr *nl_freq; 13988 13989 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 13990 if (!msg) 13991 return; 13992 13993 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 13994 if (!hdr) { 13995 nlmsg_free(msg); 13996 return; 13997 } 13998 13999 /* 14000 * Since we are applying the beacon hint to a wiphy we know its 14001 * wiphy_idx is valid 14002 */ 14003 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 14004 goto nla_put_failure; 14005 14006 /* Before */ 14007 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 14008 if (!nl_freq) 14009 goto nla_put_failure; 14010 if (nl80211_msg_put_channel(msg, channel_before, false)) 14011 goto nla_put_failure; 14012 nla_nest_end(msg, nl_freq); 14013 14014 /* After */ 14015 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 14016 if (!nl_freq) 14017 goto nla_put_failure; 14018 if (nl80211_msg_put_channel(msg, channel_after, false)) 14019 goto nla_put_failure; 14020 nla_nest_end(msg, nl_freq); 14021 14022 genlmsg_end(msg, hdr); 14023 14024 rcu_read_lock(); 14025 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 14026 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 14027 rcu_read_unlock(); 14028 14029 return; 14030 14031 nla_put_failure: 14032 genlmsg_cancel(msg, hdr); 14033 nlmsg_free(msg); 14034 } 14035 14036 static void nl80211_send_remain_on_chan_event( 14037 int cmd, struct cfg80211_registered_device *rdev, 14038 struct wireless_dev *wdev, u64 cookie, 14039 struct ieee80211_channel *chan, 14040 unsigned int duration, gfp_t gfp) 14041 { 14042 struct sk_buff *msg; 14043 void *hdr; 14044 14045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14046 if (!msg) 14047 return; 14048 14049 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14050 if (!hdr) { 14051 nlmsg_free(msg); 14052 return; 14053 } 14054 14055 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14056 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14057 wdev->netdev->ifindex)) || 14058 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14059 NL80211_ATTR_PAD) || 14060 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 14061 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 14062 NL80211_CHAN_NO_HT) || 14063 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14064 NL80211_ATTR_PAD)) 14065 goto nla_put_failure; 14066 14067 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 14068 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 14069 goto nla_put_failure; 14070 14071 genlmsg_end(msg, hdr); 14072 14073 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14074 NL80211_MCGRP_MLME, gfp); 14075 return; 14076 14077 nla_put_failure: 14078 genlmsg_cancel(msg, hdr); 14079 nlmsg_free(msg); 14080 } 14081 14082 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 14083 struct ieee80211_channel *chan, 14084 unsigned int duration, gfp_t gfp) 14085 { 14086 struct wiphy *wiphy = wdev->wiphy; 14087 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14088 14089 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 14090 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 14091 rdev, wdev, cookie, chan, 14092 duration, gfp); 14093 } 14094 EXPORT_SYMBOL(cfg80211_ready_on_channel); 14095 14096 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 14097 struct ieee80211_channel *chan, 14098 gfp_t gfp) 14099 { 14100 struct wiphy *wiphy = wdev->wiphy; 14101 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14102 14103 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 14104 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 14105 rdev, wdev, cookie, chan, 0, gfp); 14106 } 14107 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 14108 14109 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 14110 struct station_info *sinfo, gfp_t gfp) 14111 { 14112 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14114 struct sk_buff *msg; 14115 14116 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 14117 14118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14119 if (!msg) 14120 return; 14121 14122 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 14123 rdev, dev, mac_addr, sinfo) < 0) { 14124 nlmsg_free(msg); 14125 return; 14126 } 14127 14128 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14129 NL80211_MCGRP_MLME, gfp); 14130 } 14131 EXPORT_SYMBOL(cfg80211_new_sta); 14132 14133 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 14134 struct station_info *sinfo, gfp_t gfp) 14135 { 14136 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14137 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14138 struct sk_buff *msg; 14139 struct station_info empty_sinfo = {}; 14140 14141 if (!sinfo) 14142 sinfo = &empty_sinfo; 14143 14144 trace_cfg80211_del_sta(dev, mac_addr); 14145 14146 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14147 if (!msg) 14148 return; 14149 14150 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 14151 rdev, dev, mac_addr, sinfo) < 0) { 14152 nlmsg_free(msg); 14153 return; 14154 } 14155 14156 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14157 NL80211_MCGRP_MLME, gfp); 14158 } 14159 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 14160 14161 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 14162 enum nl80211_connect_failed_reason reason, 14163 gfp_t gfp) 14164 { 14165 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 14166 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14167 struct sk_buff *msg; 14168 void *hdr; 14169 14170 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 14171 if (!msg) 14172 return; 14173 14174 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 14175 if (!hdr) { 14176 nlmsg_free(msg); 14177 return; 14178 } 14179 14180 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14181 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 14182 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 14183 goto nla_put_failure; 14184 14185 genlmsg_end(msg, hdr); 14186 14187 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14188 NL80211_MCGRP_MLME, gfp); 14189 return; 14190 14191 nla_put_failure: 14192 genlmsg_cancel(msg, hdr); 14193 nlmsg_free(msg); 14194 } 14195 EXPORT_SYMBOL(cfg80211_conn_failed); 14196 14197 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 14198 const u8 *addr, gfp_t gfp) 14199 { 14200 struct wireless_dev *wdev = dev->ieee80211_ptr; 14201 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14202 struct sk_buff *msg; 14203 void *hdr; 14204 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 14205 14206 if (!nlportid) 14207 return false; 14208 14209 msg = nlmsg_new(100, gfp); 14210 if (!msg) 14211 return true; 14212 14213 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 14214 if (!hdr) { 14215 nlmsg_free(msg); 14216 return true; 14217 } 14218 14219 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14220 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14221 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 14222 goto nla_put_failure; 14223 14224 genlmsg_end(msg, hdr); 14225 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14226 return true; 14227 14228 nla_put_failure: 14229 genlmsg_cancel(msg, hdr); 14230 nlmsg_free(msg); 14231 return true; 14232 } 14233 14234 bool cfg80211_rx_spurious_frame(struct net_device *dev, 14235 const u8 *addr, gfp_t gfp) 14236 { 14237 struct wireless_dev *wdev = dev->ieee80211_ptr; 14238 bool ret; 14239 14240 trace_cfg80211_rx_spurious_frame(dev, addr); 14241 14242 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14243 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 14244 trace_cfg80211_return_bool(false); 14245 return false; 14246 } 14247 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 14248 addr, gfp); 14249 trace_cfg80211_return_bool(ret); 14250 return ret; 14251 } 14252 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 14253 14254 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 14255 const u8 *addr, gfp_t gfp) 14256 { 14257 struct wireless_dev *wdev = dev->ieee80211_ptr; 14258 bool ret; 14259 14260 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 14261 14262 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 14263 wdev->iftype != NL80211_IFTYPE_P2P_GO && 14264 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 14265 trace_cfg80211_return_bool(false); 14266 return false; 14267 } 14268 ret = __nl80211_unexpected_frame(dev, 14269 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 14270 addr, gfp); 14271 trace_cfg80211_return_bool(ret); 14272 return ret; 14273 } 14274 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 14275 14276 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 14277 struct wireless_dev *wdev, u32 nlportid, 14278 int freq, int sig_dbm, 14279 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 14280 { 14281 struct net_device *netdev = wdev->netdev; 14282 struct sk_buff *msg; 14283 void *hdr; 14284 14285 msg = nlmsg_new(100 + len, gfp); 14286 if (!msg) 14287 return -ENOMEM; 14288 14289 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14290 if (!hdr) { 14291 nlmsg_free(msg); 14292 return -ENOMEM; 14293 } 14294 14295 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14296 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14297 netdev->ifindex)) || 14298 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14299 NL80211_ATTR_PAD) || 14300 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 14301 (sig_dbm && 14302 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14303 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14304 (flags && 14305 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 14306 goto nla_put_failure; 14307 14308 genlmsg_end(msg, hdr); 14309 14310 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 14311 14312 nla_put_failure: 14313 genlmsg_cancel(msg, hdr); 14314 nlmsg_free(msg); 14315 return -ENOBUFS; 14316 } 14317 14318 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 14319 const u8 *buf, size_t len, bool ack, gfp_t gfp) 14320 { 14321 struct wiphy *wiphy = wdev->wiphy; 14322 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14323 struct net_device *netdev = wdev->netdev; 14324 struct sk_buff *msg; 14325 void *hdr; 14326 14327 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 14328 14329 msg = nlmsg_new(100 + len, gfp); 14330 if (!msg) 14331 return; 14332 14333 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 14334 if (!hdr) { 14335 nlmsg_free(msg); 14336 return; 14337 } 14338 14339 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14340 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14341 netdev->ifindex)) || 14342 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14343 NL80211_ATTR_PAD) || 14344 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 14345 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14346 NL80211_ATTR_PAD) || 14347 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 14348 goto nla_put_failure; 14349 14350 genlmsg_end(msg, hdr); 14351 14352 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14353 NL80211_MCGRP_MLME, gfp); 14354 return; 14355 14356 nla_put_failure: 14357 genlmsg_cancel(msg, hdr); 14358 nlmsg_free(msg); 14359 } 14360 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 14361 14362 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 14363 const char *mac, gfp_t gfp) 14364 { 14365 struct wireless_dev *wdev = dev->ieee80211_ptr; 14366 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14367 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14368 void **cb; 14369 14370 if (!msg) 14371 return NULL; 14372 14373 cb = (void **)msg->cb; 14374 14375 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 14376 if (!cb[0]) { 14377 nlmsg_free(msg); 14378 return NULL; 14379 } 14380 14381 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14382 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 14383 goto nla_put_failure; 14384 14385 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 14386 goto nla_put_failure; 14387 14388 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 14389 if (!cb[1]) 14390 goto nla_put_failure; 14391 14392 cb[2] = rdev; 14393 14394 return msg; 14395 nla_put_failure: 14396 nlmsg_free(msg); 14397 return NULL; 14398 } 14399 14400 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 14401 { 14402 void **cb = (void **)msg->cb; 14403 struct cfg80211_registered_device *rdev = cb[2]; 14404 14405 nla_nest_end(msg, cb[1]); 14406 genlmsg_end(msg, cb[0]); 14407 14408 memset(msg->cb, 0, sizeof(msg->cb)); 14409 14410 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14411 NL80211_MCGRP_MLME, gfp); 14412 } 14413 14414 void cfg80211_cqm_rssi_notify(struct net_device *dev, 14415 enum nl80211_cqm_rssi_threshold_event rssi_event, 14416 s32 rssi_level, gfp_t gfp) 14417 { 14418 struct sk_buff *msg; 14419 struct wireless_dev *wdev = dev->ieee80211_ptr; 14420 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14421 14422 trace_cfg80211_cqm_rssi_notify(dev, rssi_event, rssi_level); 14423 14424 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 14425 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 14426 return; 14427 14428 if (wdev->cqm_config) { 14429 wdev->cqm_config->last_rssi_event_value = rssi_level; 14430 14431 cfg80211_cqm_rssi_update(rdev, dev); 14432 14433 if (rssi_level == 0) 14434 rssi_level = wdev->cqm_config->last_rssi_event_value; 14435 } 14436 14437 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 14438 if (!msg) 14439 return; 14440 14441 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 14442 rssi_event)) 14443 goto nla_put_failure; 14444 14445 if (rssi_level && nla_put_s32(msg, NL80211_ATTR_CQM_RSSI_LEVEL, 14446 rssi_level)) 14447 goto nla_put_failure; 14448 14449 cfg80211_send_cqm(msg, gfp); 14450 14451 return; 14452 14453 nla_put_failure: 14454 nlmsg_free(msg); 14455 } 14456 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 14457 14458 void cfg80211_cqm_txe_notify(struct net_device *dev, 14459 const u8 *peer, u32 num_packets, 14460 u32 rate, u32 intvl, gfp_t gfp) 14461 { 14462 struct sk_buff *msg; 14463 14464 msg = cfg80211_prepare_cqm(dev, peer, gfp); 14465 if (!msg) 14466 return; 14467 14468 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 14469 goto nla_put_failure; 14470 14471 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 14472 goto nla_put_failure; 14473 14474 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 14475 goto nla_put_failure; 14476 14477 cfg80211_send_cqm(msg, gfp); 14478 return; 14479 14480 nla_put_failure: 14481 nlmsg_free(msg); 14482 } 14483 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 14484 14485 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 14486 const u8 *peer, u32 num_packets, gfp_t gfp) 14487 { 14488 struct sk_buff *msg; 14489 14490 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 14491 14492 msg = cfg80211_prepare_cqm(dev, peer, gfp); 14493 if (!msg) 14494 return; 14495 14496 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 14497 goto nla_put_failure; 14498 14499 cfg80211_send_cqm(msg, gfp); 14500 return; 14501 14502 nla_put_failure: 14503 nlmsg_free(msg); 14504 } 14505 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 14506 14507 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 14508 { 14509 struct sk_buff *msg; 14510 14511 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 14512 if (!msg) 14513 return; 14514 14515 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 14516 goto nla_put_failure; 14517 14518 cfg80211_send_cqm(msg, gfp); 14519 return; 14520 14521 nla_put_failure: 14522 nlmsg_free(msg); 14523 } 14524 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 14525 14526 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 14527 struct net_device *netdev, const u8 *bssid, 14528 const u8 *replay_ctr, gfp_t gfp) 14529 { 14530 struct sk_buff *msg; 14531 struct nlattr *rekey_attr; 14532 void *hdr; 14533 14534 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14535 if (!msg) 14536 return; 14537 14538 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 14539 if (!hdr) { 14540 nlmsg_free(msg); 14541 return; 14542 } 14543 14544 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14545 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14546 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 14547 goto nla_put_failure; 14548 14549 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 14550 if (!rekey_attr) 14551 goto nla_put_failure; 14552 14553 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 14554 NL80211_REPLAY_CTR_LEN, replay_ctr)) 14555 goto nla_put_failure; 14556 14557 nla_nest_end(msg, rekey_attr); 14558 14559 genlmsg_end(msg, hdr); 14560 14561 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14562 NL80211_MCGRP_MLME, gfp); 14563 return; 14564 14565 nla_put_failure: 14566 genlmsg_cancel(msg, hdr); 14567 nlmsg_free(msg); 14568 } 14569 14570 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 14571 const u8 *replay_ctr, gfp_t gfp) 14572 { 14573 struct wireless_dev *wdev = dev->ieee80211_ptr; 14574 struct wiphy *wiphy = wdev->wiphy; 14575 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14576 14577 trace_cfg80211_gtk_rekey_notify(dev, bssid); 14578 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 14579 } 14580 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 14581 14582 static void 14583 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 14584 struct net_device *netdev, int index, 14585 const u8 *bssid, bool preauth, gfp_t gfp) 14586 { 14587 struct sk_buff *msg; 14588 struct nlattr *attr; 14589 void *hdr; 14590 14591 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14592 if (!msg) 14593 return; 14594 14595 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 14596 if (!hdr) { 14597 nlmsg_free(msg); 14598 return; 14599 } 14600 14601 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14602 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 14603 goto nla_put_failure; 14604 14605 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 14606 if (!attr) 14607 goto nla_put_failure; 14608 14609 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 14610 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 14611 (preauth && 14612 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 14613 goto nla_put_failure; 14614 14615 nla_nest_end(msg, attr); 14616 14617 genlmsg_end(msg, hdr); 14618 14619 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14620 NL80211_MCGRP_MLME, gfp); 14621 return; 14622 14623 nla_put_failure: 14624 genlmsg_cancel(msg, hdr); 14625 nlmsg_free(msg); 14626 } 14627 14628 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 14629 const u8 *bssid, bool preauth, gfp_t gfp) 14630 { 14631 struct wireless_dev *wdev = dev->ieee80211_ptr; 14632 struct wiphy *wiphy = wdev->wiphy; 14633 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14634 14635 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 14636 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 14637 } 14638 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 14639 14640 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 14641 struct net_device *netdev, 14642 struct cfg80211_chan_def *chandef, 14643 gfp_t gfp, 14644 enum nl80211_commands notif, 14645 u8 count) 14646 { 14647 struct sk_buff *msg; 14648 void *hdr; 14649 14650 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14651 if (!msg) 14652 return; 14653 14654 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 14655 if (!hdr) { 14656 nlmsg_free(msg); 14657 return; 14658 } 14659 14660 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 14661 goto nla_put_failure; 14662 14663 if (nl80211_send_chandef(msg, chandef)) 14664 goto nla_put_failure; 14665 14666 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 14667 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 14668 goto nla_put_failure; 14669 14670 genlmsg_end(msg, hdr); 14671 14672 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14673 NL80211_MCGRP_MLME, gfp); 14674 return; 14675 14676 nla_put_failure: 14677 genlmsg_cancel(msg, hdr); 14678 nlmsg_free(msg); 14679 } 14680 14681 void cfg80211_ch_switch_notify(struct net_device *dev, 14682 struct cfg80211_chan_def *chandef) 14683 { 14684 struct wireless_dev *wdev = dev->ieee80211_ptr; 14685 struct wiphy *wiphy = wdev->wiphy; 14686 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14687 14688 ASSERT_WDEV_LOCK(wdev); 14689 14690 trace_cfg80211_ch_switch_notify(dev, chandef); 14691 14692 wdev->chandef = *chandef; 14693 wdev->preset_chandef = *chandef; 14694 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 14695 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 14696 } 14697 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 14698 14699 void cfg80211_ch_switch_started_notify(struct net_device *dev, 14700 struct cfg80211_chan_def *chandef, 14701 u8 count) 14702 { 14703 struct wireless_dev *wdev = dev->ieee80211_ptr; 14704 struct wiphy *wiphy = wdev->wiphy; 14705 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14706 14707 trace_cfg80211_ch_switch_started_notify(dev, chandef); 14708 14709 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 14710 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 14711 } 14712 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 14713 14714 void 14715 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 14716 const struct cfg80211_chan_def *chandef, 14717 enum nl80211_radar_event event, 14718 struct net_device *netdev, 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, NL80211_CMD_RADAR_DETECT); 14728 if (!hdr) { 14729 nlmsg_free(msg); 14730 return; 14731 } 14732 14733 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 14734 goto nla_put_failure; 14735 14736 /* NOP and radar events don't need a netdev parameter */ 14737 if (netdev) { 14738 struct wireless_dev *wdev = netdev->ieee80211_ptr; 14739 14740 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 14741 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14742 NL80211_ATTR_PAD)) 14743 goto nla_put_failure; 14744 } 14745 14746 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 14747 goto nla_put_failure; 14748 14749 if (nl80211_send_chandef(msg, chandef)) 14750 goto nla_put_failure; 14751 14752 genlmsg_end(msg, hdr); 14753 14754 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14755 NL80211_MCGRP_MLME, gfp); 14756 return; 14757 14758 nla_put_failure: 14759 genlmsg_cancel(msg, hdr); 14760 nlmsg_free(msg); 14761 } 14762 14763 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 14764 u64 cookie, bool acked, gfp_t gfp) 14765 { 14766 struct wireless_dev *wdev = dev->ieee80211_ptr; 14767 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14768 struct sk_buff *msg; 14769 void *hdr; 14770 14771 trace_cfg80211_probe_status(dev, addr, cookie, acked); 14772 14773 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 14774 14775 if (!msg) 14776 return; 14777 14778 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 14779 if (!hdr) { 14780 nlmsg_free(msg); 14781 return; 14782 } 14783 14784 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14785 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 14786 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 14787 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 14788 NL80211_ATTR_PAD) || 14789 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 14790 goto nla_put_failure; 14791 14792 genlmsg_end(msg, hdr); 14793 14794 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 14795 NL80211_MCGRP_MLME, gfp); 14796 return; 14797 14798 nla_put_failure: 14799 genlmsg_cancel(msg, hdr); 14800 nlmsg_free(msg); 14801 } 14802 EXPORT_SYMBOL(cfg80211_probe_status); 14803 14804 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 14805 const u8 *frame, size_t len, 14806 int freq, int sig_dbm) 14807 { 14808 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 14809 struct sk_buff *msg; 14810 void *hdr; 14811 struct cfg80211_beacon_registration *reg; 14812 14813 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 14814 14815 spin_lock_bh(&rdev->beacon_registrations_lock); 14816 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 14817 msg = nlmsg_new(len + 100, GFP_ATOMIC); 14818 if (!msg) { 14819 spin_unlock_bh(&rdev->beacon_registrations_lock); 14820 return; 14821 } 14822 14823 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 14824 if (!hdr) 14825 goto nla_put_failure; 14826 14827 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14828 (freq && 14829 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 14830 (sig_dbm && 14831 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 14832 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 14833 goto nla_put_failure; 14834 14835 genlmsg_end(msg, hdr); 14836 14837 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 14838 } 14839 spin_unlock_bh(&rdev->beacon_registrations_lock); 14840 return; 14841 14842 nla_put_failure: 14843 spin_unlock_bh(&rdev->beacon_registrations_lock); 14844 if (hdr) 14845 genlmsg_cancel(msg, hdr); 14846 nlmsg_free(msg); 14847 } 14848 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 14849 14850 #ifdef CONFIG_PM 14851 static int cfg80211_net_detect_results(struct sk_buff *msg, 14852 struct cfg80211_wowlan_wakeup *wakeup) 14853 { 14854 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 14855 struct nlattr *nl_results, *nl_match, *nl_freqs; 14856 int i, j; 14857 14858 nl_results = nla_nest_start( 14859 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 14860 if (!nl_results) 14861 return -EMSGSIZE; 14862 14863 for (i = 0; i < nd->n_matches; i++) { 14864 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 14865 14866 nl_match = nla_nest_start(msg, i); 14867 if (!nl_match) 14868 break; 14869 14870 /* The SSID attribute is optional in nl80211, but for 14871 * simplicity reasons it's always present in the 14872 * cfg80211 structure. If a driver can't pass the 14873 * SSID, that needs to be changed. A zero length SSID 14874 * is still a valid SSID (wildcard), so it cannot be 14875 * used for this purpose. 14876 */ 14877 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 14878 match->ssid.ssid)) { 14879 nla_nest_cancel(msg, nl_match); 14880 goto out; 14881 } 14882 14883 if (match->n_channels) { 14884 nl_freqs = nla_nest_start( 14885 msg, NL80211_ATTR_SCAN_FREQUENCIES); 14886 if (!nl_freqs) { 14887 nla_nest_cancel(msg, nl_match); 14888 goto out; 14889 } 14890 14891 for (j = 0; j < match->n_channels; j++) { 14892 if (nla_put_u32(msg, j, match->channels[j])) { 14893 nla_nest_cancel(msg, nl_freqs); 14894 nla_nest_cancel(msg, nl_match); 14895 goto out; 14896 } 14897 } 14898 14899 nla_nest_end(msg, nl_freqs); 14900 } 14901 14902 nla_nest_end(msg, nl_match); 14903 } 14904 14905 out: 14906 nla_nest_end(msg, nl_results); 14907 return 0; 14908 } 14909 14910 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 14911 struct cfg80211_wowlan_wakeup *wakeup, 14912 gfp_t gfp) 14913 { 14914 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 14915 struct sk_buff *msg; 14916 void *hdr; 14917 int size = 200; 14918 14919 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 14920 14921 if (wakeup) 14922 size += wakeup->packet_present_len; 14923 14924 msg = nlmsg_new(size, gfp); 14925 if (!msg) 14926 return; 14927 14928 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 14929 if (!hdr) 14930 goto free_msg; 14931 14932 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 14933 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 14934 NL80211_ATTR_PAD)) 14935 goto free_msg; 14936 14937 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 14938 wdev->netdev->ifindex)) 14939 goto free_msg; 14940 14941 if (wakeup) { 14942 struct nlattr *reasons; 14943 14944 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 14945 if (!reasons) 14946 goto free_msg; 14947 14948 if (wakeup->disconnect && 14949 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 14950 goto free_msg; 14951 if (wakeup->magic_pkt && 14952 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 14953 goto free_msg; 14954 if (wakeup->gtk_rekey_failure && 14955 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 14956 goto free_msg; 14957 if (wakeup->eap_identity_req && 14958 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 14959 goto free_msg; 14960 if (wakeup->four_way_handshake && 14961 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 14962 goto free_msg; 14963 if (wakeup->rfkill_release && 14964 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 14965 goto free_msg; 14966 14967 if (wakeup->pattern_idx >= 0 && 14968 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 14969 wakeup->pattern_idx)) 14970 goto free_msg; 14971 14972 if (wakeup->tcp_match && 14973 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 14974 goto free_msg; 14975 14976 if (wakeup->tcp_connlost && 14977 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 14978 goto free_msg; 14979 14980 if (wakeup->tcp_nomoretokens && 14981 nla_put_flag(msg, 14982 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 14983 goto free_msg; 14984 14985 if (wakeup->packet) { 14986 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 14987 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 14988 14989 if (!wakeup->packet_80211) { 14990 pkt_attr = 14991 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 14992 len_attr = 14993 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 14994 } 14995 14996 if (wakeup->packet_len && 14997 nla_put_u32(msg, len_attr, wakeup->packet_len)) 14998 goto free_msg; 14999 15000 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 15001 wakeup->packet)) 15002 goto free_msg; 15003 } 15004 15005 if (wakeup->net_detect && 15006 cfg80211_net_detect_results(msg, wakeup)) 15007 goto free_msg; 15008 15009 nla_nest_end(msg, reasons); 15010 } 15011 15012 genlmsg_end(msg, hdr); 15013 15014 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15015 NL80211_MCGRP_MLME, gfp); 15016 return; 15017 15018 free_msg: 15019 nlmsg_free(msg); 15020 } 15021 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 15022 #endif 15023 15024 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 15025 enum nl80211_tdls_operation oper, 15026 u16 reason_code, gfp_t gfp) 15027 { 15028 struct wireless_dev *wdev = dev->ieee80211_ptr; 15029 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 15030 struct sk_buff *msg; 15031 void *hdr; 15032 15033 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 15034 reason_code); 15035 15036 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15037 if (!msg) 15038 return; 15039 15040 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 15041 if (!hdr) { 15042 nlmsg_free(msg); 15043 return; 15044 } 15045 15046 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15047 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 15048 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 15049 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 15050 (reason_code > 0 && 15051 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 15052 goto nla_put_failure; 15053 15054 genlmsg_end(msg, hdr); 15055 15056 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15057 NL80211_MCGRP_MLME, gfp); 15058 return; 15059 15060 nla_put_failure: 15061 genlmsg_cancel(msg, hdr); 15062 nlmsg_free(msg); 15063 } 15064 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 15065 15066 static int nl80211_netlink_notify(struct notifier_block * nb, 15067 unsigned long state, 15068 void *_notify) 15069 { 15070 struct netlink_notify *notify = _notify; 15071 struct cfg80211_registered_device *rdev; 15072 struct wireless_dev *wdev; 15073 struct cfg80211_beacon_registration *reg, *tmp; 15074 15075 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 15076 return NOTIFY_DONE; 15077 15078 rcu_read_lock(); 15079 15080 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 15081 struct cfg80211_sched_scan_request *sched_scan_req; 15082 15083 list_for_each_entry_rcu(sched_scan_req, 15084 &rdev->sched_scan_req_list, 15085 list) { 15086 if (sched_scan_req->owner_nlportid == notify->portid) { 15087 sched_scan_req->nl_owner_dead = true; 15088 schedule_work(&rdev->sched_scan_stop_wk); 15089 } 15090 } 15091 15092 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 15093 cfg80211_mlme_unregister_socket(wdev, notify->portid); 15094 15095 if (wdev->owner_nlportid == notify->portid) { 15096 wdev->nl_owner_dead = true; 15097 schedule_work(&rdev->destroy_work); 15098 } else if (wdev->conn_owner_nlportid == notify->portid) { 15099 schedule_work(&wdev->disconnect_wk); 15100 } 15101 } 15102 15103 spin_lock_bh(&rdev->beacon_registrations_lock); 15104 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 15105 list) { 15106 if (reg->nlportid == notify->portid) { 15107 list_del(®->list); 15108 kfree(reg); 15109 break; 15110 } 15111 } 15112 spin_unlock_bh(&rdev->beacon_registrations_lock); 15113 } 15114 15115 rcu_read_unlock(); 15116 15117 /* 15118 * It is possible that the user space process that is controlling the 15119 * indoor setting disappeared, so notify the regulatory core. 15120 */ 15121 regulatory_netlink_notify(notify->portid); 15122 return NOTIFY_OK; 15123 } 15124 15125 static struct notifier_block nl80211_netlink_notifier = { 15126 .notifier_call = nl80211_netlink_notify, 15127 }; 15128 15129 void cfg80211_ft_event(struct net_device *netdev, 15130 struct cfg80211_ft_event_params *ft_event) 15131 { 15132 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 15133 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15134 struct sk_buff *msg; 15135 void *hdr; 15136 15137 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 15138 15139 if (!ft_event->target_ap) 15140 return; 15141 15142 msg = nlmsg_new(100 + ft_event->ric_ies_len, GFP_KERNEL); 15143 if (!msg) 15144 return; 15145 15146 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 15147 if (!hdr) 15148 goto out; 15149 15150 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15151 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 15152 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 15153 goto out; 15154 15155 if (ft_event->ies && 15156 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 15157 goto out; 15158 if (ft_event->ric_ies && 15159 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 15160 ft_event->ric_ies)) 15161 goto out; 15162 15163 genlmsg_end(msg, hdr); 15164 15165 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 15166 NL80211_MCGRP_MLME, GFP_KERNEL); 15167 return; 15168 out: 15169 nlmsg_free(msg); 15170 } 15171 EXPORT_SYMBOL(cfg80211_ft_event); 15172 15173 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 15174 { 15175 struct cfg80211_registered_device *rdev; 15176 struct sk_buff *msg; 15177 void *hdr; 15178 u32 nlportid; 15179 15180 rdev = wiphy_to_rdev(wdev->wiphy); 15181 if (!rdev->crit_proto_nlportid) 15182 return; 15183 15184 nlportid = rdev->crit_proto_nlportid; 15185 rdev->crit_proto_nlportid = 0; 15186 15187 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 15188 if (!msg) 15189 return; 15190 15191 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 15192 if (!hdr) 15193 goto nla_put_failure; 15194 15195 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15196 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15197 NL80211_ATTR_PAD)) 15198 goto nla_put_failure; 15199 15200 genlmsg_end(msg, hdr); 15201 15202 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 15203 return; 15204 15205 nla_put_failure: 15206 if (hdr) 15207 genlmsg_cancel(msg, hdr); 15208 nlmsg_free(msg); 15209 } 15210 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 15211 15212 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 15213 { 15214 struct wiphy *wiphy = wdev->wiphy; 15215 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 15216 struct sk_buff *msg; 15217 void *hdr; 15218 15219 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 15220 if (!msg) 15221 return; 15222 15223 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 15224 if (!hdr) 15225 goto out; 15226 15227 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 15228 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 15229 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 15230 NL80211_ATTR_PAD)) 15231 goto out; 15232 15233 genlmsg_end(msg, hdr); 15234 15235 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 15236 NL80211_MCGRP_MLME, GFP_KERNEL); 15237 return; 15238 out: 15239 nlmsg_free(msg); 15240 } 15241 15242 /* initialisation/exit functions */ 15243 15244 int __init nl80211_init(void) 15245 { 15246 int err; 15247 15248 err = genl_register_family(&nl80211_fam); 15249 if (err) 15250 return err; 15251 15252 err = netlink_register_notifier(&nl80211_netlink_notifier); 15253 if (err) 15254 goto err_out; 15255 15256 return 0; 15257 err_out: 15258 genl_unregister_family(&nl80211_fam); 15259 return err; 15260 } 15261 15262 void nl80211_exit(void) 15263 { 15264 netlink_unregister_notifier(&nl80211_netlink_notifier); 15265 genl_unregister_family(&nl80211_fam); 15266 } 15267