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 2015-2016 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 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 36 struct genl_info *info); 37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 38 struct genl_info *info); 39 40 /* the netlink family */ 41 static struct genl_family nl80211_fam = { 42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 43 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 44 .hdrsize = 0, /* no private header */ 45 .version = 1, /* no particular meaning now */ 46 .maxattr = NL80211_ATTR_MAX, 47 .netnsok = true, 48 .pre_doit = nl80211_pre_doit, 49 .post_doit = nl80211_post_doit, 50 }; 51 52 /* multicast groups */ 53 enum nl80211_multicast_groups { 54 NL80211_MCGRP_CONFIG, 55 NL80211_MCGRP_SCAN, 56 NL80211_MCGRP_REGULATORY, 57 NL80211_MCGRP_MLME, 58 NL80211_MCGRP_VENDOR, 59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 60 }; 61 62 static const struct genl_multicast_group nl80211_mcgrps[] = { 63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 68 #ifdef CONFIG_NL80211_TESTMODE 69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 70 #endif 71 }; 72 73 /* returns ERR_PTR values */ 74 static struct wireless_dev * 75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 76 { 77 struct cfg80211_registered_device *rdev; 78 struct wireless_dev *result = NULL; 79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 81 u64 wdev_id; 82 int wiphy_idx = -1; 83 int ifidx = -1; 84 85 ASSERT_RTNL(); 86 87 if (!have_ifidx && !have_wdev_id) 88 return ERR_PTR(-EINVAL); 89 90 if (have_ifidx) 91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 92 if (have_wdev_id) { 93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 94 wiphy_idx = wdev_id >> 32; 95 } 96 97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 98 struct wireless_dev *wdev; 99 100 if (wiphy_net(&rdev->wiphy) != netns) 101 continue; 102 103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 104 continue; 105 106 list_for_each_entry(wdev, &rdev->wdev_list, list) { 107 if (have_ifidx && wdev->netdev && 108 wdev->netdev->ifindex == ifidx) { 109 result = wdev; 110 break; 111 } 112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 113 result = wdev; 114 break; 115 } 116 } 117 118 if (result) 119 break; 120 } 121 122 if (result) 123 return result; 124 return ERR_PTR(-ENODEV); 125 } 126 127 static struct cfg80211_registered_device * 128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 129 { 130 struct cfg80211_registered_device *rdev = NULL, *tmp; 131 struct net_device *netdev; 132 133 ASSERT_RTNL(); 134 135 if (!attrs[NL80211_ATTR_WIPHY] && 136 !attrs[NL80211_ATTR_IFINDEX] && 137 !attrs[NL80211_ATTR_WDEV]) 138 return ERR_PTR(-EINVAL); 139 140 if (attrs[NL80211_ATTR_WIPHY]) 141 rdev = cfg80211_rdev_by_wiphy_idx( 142 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 143 144 if (attrs[NL80211_ATTR_WDEV]) { 145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 146 struct wireless_dev *wdev; 147 bool found = false; 148 149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 150 if (tmp) { 151 /* make sure wdev exists */ 152 list_for_each_entry(wdev, &tmp->wdev_list, list) { 153 if (wdev->identifier != (u32)wdev_id) 154 continue; 155 found = true; 156 break; 157 } 158 159 if (!found) 160 tmp = NULL; 161 162 if (rdev && tmp != rdev) 163 return ERR_PTR(-EINVAL); 164 rdev = tmp; 165 } 166 } 167 168 if (attrs[NL80211_ATTR_IFINDEX]) { 169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 170 netdev = __dev_get_by_index(netns, ifindex); 171 if (netdev) { 172 if (netdev->ieee80211_ptr) 173 tmp = wiphy_to_rdev( 174 netdev->ieee80211_ptr->wiphy); 175 else 176 tmp = NULL; 177 178 /* not wireless device -- return error */ 179 if (!tmp) 180 return ERR_PTR(-EINVAL); 181 182 /* mismatch -- return error */ 183 if (rdev && tmp != rdev) 184 return ERR_PTR(-EINVAL); 185 186 rdev = tmp; 187 } 188 } 189 190 if (!rdev) 191 return ERR_PTR(-ENODEV); 192 193 if (netns != wiphy_net(&rdev->wiphy)) 194 return ERR_PTR(-ENODEV); 195 196 return rdev; 197 } 198 199 /* 200 * This function returns a pointer to the driver 201 * that the genl_info item that is passed refers to. 202 * 203 * The result of this can be a PTR_ERR and hence must 204 * be checked with IS_ERR() for errors. 205 */ 206 static struct cfg80211_registered_device * 207 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 208 { 209 return __cfg80211_rdev_from_attrs(netns, info->attrs); 210 } 211 212 /* policy for the attributes */ 213 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 214 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 215 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 216 .len = 20-1 }, 217 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 218 219 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 220 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 222 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 223 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 224 225 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 226 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 227 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 228 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 229 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 230 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 231 232 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 233 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 234 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 235 236 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 237 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 238 239 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 240 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 241 .len = WLAN_MAX_KEY_LEN }, 242 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 243 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 244 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 245 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 246 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 247 248 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 249 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 250 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 251 .len = IEEE80211_MAX_DATA_LEN }, 252 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 253 .len = IEEE80211_MAX_DATA_LEN }, 254 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 255 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 256 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 257 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 258 .len = NL80211_MAX_SUPP_RATES }, 259 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 260 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 261 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 262 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 263 .len = IEEE80211_MAX_MESH_ID_LEN }, 264 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 265 266 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 267 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 268 269 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 270 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 271 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 272 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 273 .len = NL80211_MAX_SUPP_RATES }, 274 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 275 276 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 277 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 278 279 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 280 281 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 282 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 283 .len = IEEE80211_MAX_DATA_LEN }, 284 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 285 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 286 287 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 288 .len = IEEE80211_MAX_SSID_LEN }, 289 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 290 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 291 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 292 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 293 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 294 [NL80211_ATTR_STA_FLAGS2] = { 295 .len = sizeof(struct nl80211_sta_flag_update), 296 }, 297 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 298 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 299 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 300 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 301 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 302 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 303 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 304 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 305 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 306 .len = WLAN_PMKID_LEN }, 307 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 308 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 309 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 310 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 311 .len = IEEE80211_MAX_DATA_LEN }, 312 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 313 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 314 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 315 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 316 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 317 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 318 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 319 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 320 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 321 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 322 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 323 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 324 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 325 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 326 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 327 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 328 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 329 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 330 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 331 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 332 .len = IEEE80211_MAX_DATA_LEN }, 333 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 334 .len = IEEE80211_MAX_DATA_LEN }, 335 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 336 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 337 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 338 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 339 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 340 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 341 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 342 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 343 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 345 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 346 .len = IEEE80211_MAX_DATA_LEN }, 347 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 348 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 349 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 350 .len = NL80211_HT_CAPABILITY_LEN 351 }, 352 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 353 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 354 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 355 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 356 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 357 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 358 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 359 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 360 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 361 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 362 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 363 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 364 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 365 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 366 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 367 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 368 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 369 .len = NL80211_VHT_CAPABILITY_LEN, 370 }, 371 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 372 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 373 .len = IEEE80211_MAX_DATA_LEN }, 374 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 375 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 376 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 377 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 378 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 379 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 380 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 381 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 382 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 383 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 384 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 385 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 386 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 387 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 388 .len = IEEE80211_QOS_MAP_LEN_MAX }, 389 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 390 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 391 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 392 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 393 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 394 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 395 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 396 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 397 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 398 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 399 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 400 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 401 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 402 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 403 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 404 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 405 }; 406 407 /* policy for the key attributes */ 408 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 409 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 410 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 411 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 412 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 413 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 414 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 415 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 416 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 417 }; 418 419 /* policy for the key default flags */ 420 static const struct nla_policy 421 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 422 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 423 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 424 }; 425 426 /* policy for WoWLAN attributes */ 427 static const struct nla_policy 428 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 429 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 430 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 431 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 432 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 433 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 434 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 435 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 436 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 437 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 438 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 439 }; 440 441 static const struct nla_policy 442 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 443 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 444 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 445 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 446 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 447 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 448 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 450 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 451 }, 452 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 453 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 454 }, 455 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 456 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 457 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 458 }; 459 460 /* policy for coalesce rule attributes */ 461 static const struct nla_policy 462 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 463 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 464 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 465 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 466 }; 467 468 /* policy for GTK rekey offload attributes */ 469 static const struct nla_policy 470 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 471 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 472 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 473 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 474 }; 475 476 static const struct nla_policy 477 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 478 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 479 .len = IEEE80211_MAX_SSID_LEN }, 480 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 481 }; 482 483 static const struct nla_policy 484 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 485 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 486 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 487 }; 488 489 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 490 struct netlink_callback *cb, 491 struct cfg80211_registered_device **rdev, 492 struct wireless_dev **wdev) 493 { 494 int err; 495 496 rtnl_lock(); 497 498 if (!cb->args[0]) { 499 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 500 nl80211_fam.attrbuf, nl80211_fam.maxattr, 501 nl80211_policy); 502 if (err) 503 goto out_unlock; 504 505 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 506 nl80211_fam.attrbuf); 507 if (IS_ERR(*wdev)) { 508 err = PTR_ERR(*wdev); 509 goto out_unlock; 510 } 511 *rdev = wiphy_to_rdev((*wdev)->wiphy); 512 /* 0 is the first index - add 1 to parse only once */ 513 cb->args[0] = (*rdev)->wiphy_idx + 1; 514 cb->args[1] = (*wdev)->identifier; 515 } else { 516 /* subtract the 1 again here */ 517 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 518 struct wireless_dev *tmp; 519 520 if (!wiphy) { 521 err = -ENODEV; 522 goto out_unlock; 523 } 524 *rdev = wiphy_to_rdev(wiphy); 525 *wdev = NULL; 526 527 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 528 if (tmp->identifier == cb->args[1]) { 529 *wdev = tmp; 530 break; 531 } 532 } 533 534 if (!*wdev) { 535 err = -ENODEV; 536 goto out_unlock; 537 } 538 } 539 540 return 0; 541 out_unlock: 542 rtnl_unlock(); 543 return err; 544 } 545 546 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 547 { 548 rtnl_unlock(); 549 } 550 551 /* IE validation */ 552 static bool is_valid_ie_attr(const struct nlattr *attr) 553 { 554 const u8 *pos; 555 int len; 556 557 if (!attr) 558 return true; 559 560 pos = nla_data(attr); 561 len = nla_len(attr); 562 563 while (len) { 564 u8 elemlen; 565 566 if (len < 2) 567 return false; 568 len -= 2; 569 570 elemlen = pos[1]; 571 if (elemlen > len) 572 return false; 573 574 len -= elemlen; 575 pos += 2 + elemlen; 576 } 577 578 return true; 579 } 580 581 /* message building helper */ 582 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 583 int flags, u8 cmd) 584 { 585 /* since there is no private header just add the generic one */ 586 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 587 } 588 589 static int nl80211_msg_put_channel(struct sk_buff *msg, 590 struct ieee80211_channel *chan, 591 bool large) 592 { 593 /* Some channels must be completely excluded from the 594 * list to protect old user-space tools from breaking 595 */ 596 if (!large && chan->flags & 597 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 598 return 0; 599 600 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 601 chan->center_freq)) 602 goto nla_put_failure; 603 604 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 605 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 606 goto nla_put_failure; 607 if (chan->flags & IEEE80211_CHAN_NO_IR) { 608 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 609 goto nla_put_failure; 610 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 611 goto nla_put_failure; 612 } 613 if (chan->flags & IEEE80211_CHAN_RADAR) { 614 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 615 goto nla_put_failure; 616 if (large) { 617 u32 time; 618 619 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 620 621 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 622 chan->dfs_state)) 623 goto nla_put_failure; 624 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 625 time)) 626 goto nla_put_failure; 627 if (nla_put_u32(msg, 628 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 629 chan->dfs_cac_ms)) 630 goto nla_put_failure; 631 } 632 } 633 634 if (large) { 635 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 637 goto nla_put_failure; 638 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 640 goto nla_put_failure; 641 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 643 goto nla_put_failure; 644 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 646 goto nla_put_failure; 647 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 649 goto nla_put_failure; 650 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 651 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 652 goto nla_put_failure; 653 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 654 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 655 goto nla_put_failure; 656 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 657 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 658 goto nla_put_failure; 659 } 660 661 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 662 DBM_TO_MBM(chan->max_power))) 663 goto nla_put_failure; 664 665 return 0; 666 667 nla_put_failure: 668 return -ENOBUFS; 669 } 670 671 /* netlink command implementations */ 672 673 struct key_parse { 674 struct key_params p; 675 int idx; 676 int type; 677 bool def, defmgmt; 678 bool def_uni, def_multi; 679 }; 680 681 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 682 { 683 struct nlattr *tb[NL80211_KEY_MAX + 1]; 684 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 685 nl80211_key_policy); 686 if (err) 687 return err; 688 689 k->def = !!tb[NL80211_KEY_DEFAULT]; 690 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 691 692 if (k->def) { 693 k->def_uni = true; 694 k->def_multi = true; 695 } 696 if (k->defmgmt) 697 k->def_multi = true; 698 699 if (tb[NL80211_KEY_IDX]) 700 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 701 702 if (tb[NL80211_KEY_DATA]) { 703 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 704 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 705 } 706 707 if (tb[NL80211_KEY_SEQ]) { 708 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 709 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 710 } 711 712 if (tb[NL80211_KEY_CIPHER]) 713 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 714 715 if (tb[NL80211_KEY_TYPE]) { 716 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 717 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 718 return -EINVAL; 719 } 720 721 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 722 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 723 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 724 tb[NL80211_KEY_DEFAULT_TYPES], 725 nl80211_key_default_policy); 726 if (err) 727 return err; 728 729 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 730 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 731 } 732 733 return 0; 734 } 735 736 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 737 { 738 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 739 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 740 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 741 } 742 743 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 744 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 745 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 746 } 747 748 if (info->attrs[NL80211_ATTR_KEY_IDX]) 749 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 750 751 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 752 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 753 754 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 755 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 756 757 if (k->def) { 758 k->def_uni = true; 759 k->def_multi = true; 760 } 761 if (k->defmgmt) 762 k->def_multi = true; 763 764 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 765 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 766 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 767 return -EINVAL; 768 } 769 770 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 771 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 772 int err = nla_parse_nested( 773 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 774 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 775 nl80211_key_default_policy); 776 if (err) 777 return err; 778 779 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 780 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 781 } 782 783 return 0; 784 } 785 786 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 787 { 788 int err; 789 790 memset(k, 0, sizeof(*k)); 791 k->idx = -1; 792 k->type = -1; 793 794 if (info->attrs[NL80211_ATTR_KEY]) 795 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 796 else 797 err = nl80211_parse_key_old(info, k); 798 799 if (err) 800 return err; 801 802 if (k->def && k->defmgmt) 803 return -EINVAL; 804 805 if (k->defmgmt) { 806 if (k->def_uni || !k->def_multi) 807 return -EINVAL; 808 } 809 810 if (k->idx != -1) { 811 if (k->defmgmt) { 812 if (k->idx < 4 || k->idx > 5) 813 return -EINVAL; 814 } else if (k->def) { 815 if (k->idx < 0 || k->idx > 3) 816 return -EINVAL; 817 } else { 818 if (k->idx < 0 || k->idx > 5) 819 return -EINVAL; 820 } 821 } 822 823 return 0; 824 } 825 826 static struct cfg80211_cached_keys * 827 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 828 struct nlattr *keys, bool *no_ht) 829 { 830 struct key_parse parse; 831 struct nlattr *key; 832 struct cfg80211_cached_keys *result; 833 int rem, err, def = 0; 834 835 result = kzalloc(sizeof(*result), GFP_KERNEL); 836 if (!result) 837 return ERR_PTR(-ENOMEM); 838 839 result->def = -1; 840 result->defmgmt = -1; 841 842 nla_for_each_nested(key, keys, rem) { 843 memset(&parse, 0, sizeof(parse)); 844 parse.idx = -1; 845 846 err = nl80211_parse_key_new(key, &parse); 847 if (err) 848 goto error; 849 err = -EINVAL; 850 if (!parse.p.key) 851 goto error; 852 if (parse.idx < 0 || parse.idx > 4) 853 goto error; 854 if (parse.def) { 855 if (def) 856 goto error; 857 def = 1; 858 result->def = parse.idx; 859 if (!parse.def_uni || !parse.def_multi) 860 goto error; 861 } else if (parse.defmgmt) 862 goto error; 863 err = cfg80211_validate_key_settings(rdev, &parse.p, 864 parse.idx, false, NULL); 865 if (err) 866 goto error; 867 result->params[parse.idx].cipher = parse.p.cipher; 868 result->params[parse.idx].key_len = parse.p.key_len; 869 result->params[parse.idx].key = result->data[parse.idx]; 870 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 871 872 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 873 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 874 if (no_ht) 875 *no_ht = true; 876 } 877 } 878 879 return result; 880 error: 881 kfree(result); 882 return ERR_PTR(err); 883 } 884 885 static int nl80211_key_allowed(struct wireless_dev *wdev) 886 { 887 ASSERT_WDEV_LOCK(wdev); 888 889 switch (wdev->iftype) { 890 case NL80211_IFTYPE_AP: 891 case NL80211_IFTYPE_AP_VLAN: 892 case NL80211_IFTYPE_P2P_GO: 893 case NL80211_IFTYPE_MESH_POINT: 894 break; 895 case NL80211_IFTYPE_ADHOC: 896 case NL80211_IFTYPE_STATION: 897 case NL80211_IFTYPE_P2P_CLIENT: 898 if (!wdev->current_bss) 899 return -ENOLINK; 900 break; 901 case NL80211_IFTYPE_UNSPECIFIED: 902 case NL80211_IFTYPE_OCB: 903 case NL80211_IFTYPE_MONITOR: 904 case NL80211_IFTYPE_P2P_DEVICE: 905 case NL80211_IFTYPE_WDS: 906 case NUM_NL80211_IFTYPES: 907 return -EINVAL; 908 } 909 910 return 0; 911 } 912 913 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 914 struct nlattr *tb) 915 { 916 struct ieee80211_channel *chan; 917 918 if (tb == NULL) 919 return NULL; 920 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 921 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 922 return NULL; 923 return chan; 924 } 925 926 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 927 { 928 struct nlattr *nl_modes = nla_nest_start(msg, attr); 929 int i; 930 931 if (!nl_modes) 932 goto nla_put_failure; 933 934 i = 0; 935 while (ifmodes) { 936 if ((ifmodes & 1) && nla_put_flag(msg, i)) 937 goto nla_put_failure; 938 ifmodes >>= 1; 939 i++; 940 } 941 942 nla_nest_end(msg, nl_modes); 943 return 0; 944 945 nla_put_failure: 946 return -ENOBUFS; 947 } 948 949 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 950 struct sk_buff *msg, 951 bool large) 952 { 953 struct nlattr *nl_combis; 954 int i, j; 955 956 nl_combis = nla_nest_start(msg, 957 NL80211_ATTR_INTERFACE_COMBINATIONS); 958 if (!nl_combis) 959 goto nla_put_failure; 960 961 for (i = 0; i < wiphy->n_iface_combinations; i++) { 962 const struct ieee80211_iface_combination *c; 963 struct nlattr *nl_combi, *nl_limits; 964 965 c = &wiphy->iface_combinations[i]; 966 967 nl_combi = nla_nest_start(msg, i + 1); 968 if (!nl_combi) 969 goto nla_put_failure; 970 971 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 972 if (!nl_limits) 973 goto nla_put_failure; 974 975 for (j = 0; j < c->n_limits; j++) { 976 struct nlattr *nl_limit; 977 978 nl_limit = nla_nest_start(msg, j + 1); 979 if (!nl_limit) 980 goto nla_put_failure; 981 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 982 c->limits[j].max)) 983 goto nla_put_failure; 984 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 985 c->limits[j].types)) 986 goto nla_put_failure; 987 nla_nest_end(msg, nl_limit); 988 } 989 990 nla_nest_end(msg, nl_limits); 991 992 if (c->beacon_int_infra_match && 993 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 994 goto nla_put_failure; 995 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 996 c->num_different_channels) || 997 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 998 c->max_interfaces)) 999 goto nla_put_failure; 1000 if (large && 1001 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1002 c->radar_detect_widths) || 1003 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1004 c->radar_detect_regions))) 1005 goto nla_put_failure; 1006 1007 nla_nest_end(msg, nl_combi); 1008 } 1009 1010 nla_nest_end(msg, nl_combis); 1011 1012 return 0; 1013 nla_put_failure: 1014 return -ENOBUFS; 1015 } 1016 1017 #ifdef CONFIG_PM 1018 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1019 struct sk_buff *msg) 1020 { 1021 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1022 struct nlattr *nl_tcp; 1023 1024 if (!tcp) 1025 return 0; 1026 1027 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1028 if (!nl_tcp) 1029 return -ENOBUFS; 1030 1031 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1032 tcp->data_payload_max)) 1033 return -ENOBUFS; 1034 1035 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1036 tcp->data_payload_max)) 1037 return -ENOBUFS; 1038 1039 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1040 return -ENOBUFS; 1041 1042 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1043 sizeof(*tcp->tok), tcp->tok)) 1044 return -ENOBUFS; 1045 1046 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1047 tcp->data_interval_max)) 1048 return -ENOBUFS; 1049 1050 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1051 tcp->wake_payload_max)) 1052 return -ENOBUFS; 1053 1054 nla_nest_end(msg, nl_tcp); 1055 return 0; 1056 } 1057 1058 static int nl80211_send_wowlan(struct sk_buff *msg, 1059 struct cfg80211_registered_device *rdev, 1060 bool large) 1061 { 1062 struct nlattr *nl_wowlan; 1063 1064 if (!rdev->wiphy.wowlan) 1065 return 0; 1066 1067 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1068 if (!nl_wowlan) 1069 return -ENOBUFS; 1070 1071 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1079 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1080 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1081 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1082 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1083 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1084 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1085 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1086 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1087 return -ENOBUFS; 1088 1089 if (rdev->wiphy.wowlan->n_patterns) { 1090 struct nl80211_pattern_support pat = { 1091 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1092 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1093 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1094 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1095 }; 1096 1097 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1098 sizeof(pat), &pat)) 1099 return -ENOBUFS; 1100 } 1101 1102 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1103 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1104 rdev->wiphy.wowlan->max_nd_match_sets)) 1105 return -ENOBUFS; 1106 1107 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1108 return -ENOBUFS; 1109 1110 nla_nest_end(msg, nl_wowlan); 1111 1112 return 0; 1113 } 1114 #endif 1115 1116 static int nl80211_send_coalesce(struct sk_buff *msg, 1117 struct cfg80211_registered_device *rdev) 1118 { 1119 struct nl80211_coalesce_rule_support rule; 1120 1121 if (!rdev->wiphy.coalesce) 1122 return 0; 1123 1124 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1125 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1126 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1127 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1128 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1129 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1130 1131 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1132 return -ENOBUFS; 1133 1134 return 0; 1135 } 1136 1137 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1138 struct ieee80211_supported_band *sband) 1139 { 1140 struct nlattr *nl_rates, *nl_rate; 1141 struct ieee80211_rate *rate; 1142 int i; 1143 1144 /* add HT info */ 1145 if (sband->ht_cap.ht_supported && 1146 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1147 sizeof(sband->ht_cap.mcs), 1148 &sband->ht_cap.mcs) || 1149 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1150 sband->ht_cap.cap) || 1151 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1152 sband->ht_cap.ampdu_factor) || 1153 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1154 sband->ht_cap.ampdu_density))) 1155 return -ENOBUFS; 1156 1157 /* add VHT info */ 1158 if (sband->vht_cap.vht_supported && 1159 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1160 sizeof(sband->vht_cap.vht_mcs), 1161 &sband->vht_cap.vht_mcs) || 1162 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1163 sband->vht_cap.cap))) 1164 return -ENOBUFS; 1165 1166 /* add bitrates */ 1167 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1168 if (!nl_rates) 1169 return -ENOBUFS; 1170 1171 for (i = 0; i < sband->n_bitrates; i++) { 1172 nl_rate = nla_nest_start(msg, i); 1173 if (!nl_rate) 1174 return -ENOBUFS; 1175 1176 rate = &sband->bitrates[i]; 1177 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1178 rate->bitrate)) 1179 return -ENOBUFS; 1180 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1181 nla_put_flag(msg, 1182 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1183 return -ENOBUFS; 1184 1185 nla_nest_end(msg, nl_rate); 1186 } 1187 1188 nla_nest_end(msg, nl_rates); 1189 1190 return 0; 1191 } 1192 1193 static int 1194 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1195 const struct ieee80211_txrx_stypes *mgmt_stypes) 1196 { 1197 u16 stypes; 1198 struct nlattr *nl_ftypes, *nl_ifs; 1199 enum nl80211_iftype ift; 1200 int i; 1201 1202 if (!mgmt_stypes) 1203 return 0; 1204 1205 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1206 if (!nl_ifs) 1207 return -ENOBUFS; 1208 1209 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1210 nl_ftypes = nla_nest_start(msg, ift); 1211 if (!nl_ftypes) 1212 return -ENOBUFS; 1213 i = 0; 1214 stypes = mgmt_stypes[ift].tx; 1215 while (stypes) { 1216 if ((stypes & 1) && 1217 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1218 (i << 4) | IEEE80211_FTYPE_MGMT)) 1219 return -ENOBUFS; 1220 stypes >>= 1; 1221 i++; 1222 } 1223 nla_nest_end(msg, nl_ftypes); 1224 } 1225 1226 nla_nest_end(msg, nl_ifs); 1227 1228 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1229 if (!nl_ifs) 1230 return -ENOBUFS; 1231 1232 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1233 nl_ftypes = nla_nest_start(msg, ift); 1234 if (!nl_ftypes) 1235 return -ENOBUFS; 1236 i = 0; 1237 stypes = mgmt_stypes[ift].rx; 1238 while (stypes) { 1239 if ((stypes & 1) && 1240 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1241 (i << 4) | IEEE80211_FTYPE_MGMT)) 1242 return -ENOBUFS; 1243 stypes >>= 1; 1244 i++; 1245 } 1246 nla_nest_end(msg, nl_ftypes); 1247 } 1248 nla_nest_end(msg, nl_ifs); 1249 1250 return 0; 1251 } 1252 1253 struct nl80211_dump_wiphy_state { 1254 s64 filter_wiphy; 1255 long start; 1256 long split_start, band_start, chan_start; 1257 bool split; 1258 }; 1259 1260 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1261 enum nl80211_commands cmd, 1262 struct sk_buff *msg, u32 portid, u32 seq, 1263 int flags, struct nl80211_dump_wiphy_state *state) 1264 { 1265 void *hdr; 1266 struct nlattr *nl_bands, *nl_band; 1267 struct nlattr *nl_freqs, *nl_freq; 1268 struct nlattr *nl_cmds; 1269 enum ieee80211_band band; 1270 struct ieee80211_channel *chan; 1271 int i; 1272 const struct ieee80211_txrx_stypes *mgmt_stypes = 1273 rdev->wiphy.mgmt_stypes; 1274 u32 features; 1275 1276 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1277 if (!hdr) 1278 return -ENOBUFS; 1279 1280 if (WARN_ON(!state)) 1281 return -EINVAL; 1282 1283 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1284 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1285 wiphy_name(&rdev->wiphy)) || 1286 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1287 cfg80211_rdev_list_generation)) 1288 goto nla_put_failure; 1289 1290 if (cmd != NL80211_CMD_NEW_WIPHY) 1291 goto finish; 1292 1293 switch (state->split_start) { 1294 case 0: 1295 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1296 rdev->wiphy.retry_short) || 1297 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1298 rdev->wiphy.retry_long) || 1299 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1300 rdev->wiphy.frag_threshold) || 1301 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1302 rdev->wiphy.rts_threshold) || 1303 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1304 rdev->wiphy.coverage_class) || 1305 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1306 rdev->wiphy.max_scan_ssids) || 1307 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1308 rdev->wiphy.max_sched_scan_ssids) || 1309 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1310 rdev->wiphy.max_scan_ie_len) || 1311 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1312 rdev->wiphy.max_sched_scan_ie_len) || 1313 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1314 rdev->wiphy.max_match_sets) || 1315 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1316 rdev->wiphy.max_sched_scan_plans) || 1317 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1318 rdev->wiphy.max_sched_scan_plan_interval) || 1319 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1320 rdev->wiphy.max_sched_scan_plan_iterations)) 1321 goto nla_put_failure; 1322 1323 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1324 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1325 goto nla_put_failure; 1326 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1327 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1328 goto nla_put_failure; 1329 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1330 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1331 goto nla_put_failure; 1332 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1333 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1334 goto nla_put_failure; 1335 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1336 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1337 goto nla_put_failure; 1338 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1339 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1340 goto nla_put_failure; 1341 state->split_start++; 1342 if (state->split) 1343 break; 1344 case 1: 1345 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1346 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1347 rdev->wiphy.cipher_suites)) 1348 goto nla_put_failure; 1349 1350 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1351 rdev->wiphy.max_num_pmkids)) 1352 goto nla_put_failure; 1353 1354 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1355 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1356 goto nla_put_failure; 1357 1358 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1359 rdev->wiphy.available_antennas_tx) || 1360 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1361 rdev->wiphy.available_antennas_rx)) 1362 goto nla_put_failure; 1363 1364 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1365 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1366 rdev->wiphy.probe_resp_offload)) 1367 goto nla_put_failure; 1368 1369 if ((rdev->wiphy.available_antennas_tx || 1370 rdev->wiphy.available_antennas_rx) && 1371 rdev->ops->get_antenna) { 1372 u32 tx_ant = 0, rx_ant = 0; 1373 int res; 1374 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1375 if (!res) { 1376 if (nla_put_u32(msg, 1377 NL80211_ATTR_WIPHY_ANTENNA_TX, 1378 tx_ant) || 1379 nla_put_u32(msg, 1380 NL80211_ATTR_WIPHY_ANTENNA_RX, 1381 rx_ant)) 1382 goto nla_put_failure; 1383 } 1384 } 1385 1386 state->split_start++; 1387 if (state->split) 1388 break; 1389 case 2: 1390 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1391 rdev->wiphy.interface_modes)) 1392 goto nla_put_failure; 1393 state->split_start++; 1394 if (state->split) 1395 break; 1396 case 3: 1397 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1398 if (!nl_bands) 1399 goto nla_put_failure; 1400 1401 for (band = state->band_start; 1402 band < IEEE80211_NUM_BANDS; band++) { 1403 struct ieee80211_supported_band *sband; 1404 1405 sband = rdev->wiphy.bands[band]; 1406 1407 if (!sband) 1408 continue; 1409 1410 nl_band = nla_nest_start(msg, band); 1411 if (!nl_band) 1412 goto nla_put_failure; 1413 1414 switch (state->chan_start) { 1415 case 0: 1416 if (nl80211_send_band_rateinfo(msg, sband)) 1417 goto nla_put_failure; 1418 state->chan_start++; 1419 if (state->split) 1420 break; 1421 default: 1422 /* add frequencies */ 1423 nl_freqs = nla_nest_start( 1424 msg, NL80211_BAND_ATTR_FREQS); 1425 if (!nl_freqs) 1426 goto nla_put_failure; 1427 1428 for (i = state->chan_start - 1; 1429 i < sband->n_channels; 1430 i++) { 1431 nl_freq = nla_nest_start(msg, i); 1432 if (!nl_freq) 1433 goto nla_put_failure; 1434 1435 chan = &sband->channels[i]; 1436 1437 if (nl80211_msg_put_channel( 1438 msg, chan, 1439 state->split)) 1440 goto nla_put_failure; 1441 1442 nla_nest_end(msg, nl_freq); 1443 if (state->split) 1444 break; 1445 } 1446 if (i < sband->n_channels) 1447 state->chan_start = i + 2; 1448 else 1449 state->chan_start = 0; 1450 nla_nest_end(msg, nl_freqs); 1451 } 1452 1453 nla_nest_end(msg, nl_band); 1454 1455 if (state->split) { 1456 /* start again here */ 1457 if (state->chan_start) 1458 band--; 1459 break; 1460 } 1461 } 1462 nla_nest_end(msg, nl_bands); 1463 1464 if (band < IEEE80211_NUM_BANDS) 1465 state->band_start = band + 1; 1466 else 1467 state->band_start = 0; 1468 1469 /* if bands & channels are done, continue outside */ 1470 if (state->band_start == 0 && state->chan_start == 0) 1471 state->split_start++; 1472 if (state->split) 1473 break; 1474 case 4: 1475 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1476 if (!nl_cmds) 1477 goto nla_put_failure; 1478 1479 i = 0; 1480 #define CMD(op, n) \ 1481 do { \ 1482 if (rdev->ops->op) { \ 1483 i++; \ 1484 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1485 goto nla_put_failure; \ 1486 } \ 1487 } while (0) 1488 1489 CMD(add_virtual_intf, NEW_INTERFACE); 1490 CMD(change_virtual_intf, SET_INTERFACE); 1491 CMD(add_key, NEW_KEY); 1492 CMD(start_ap, START_AP); 1493 CMD(add_station, NEW_STATION); 1494 CMD(add_mpath, NEW_MPATH); 1495 CMD(update_mesh_config, SET_MESH_CONFIG); 1496 CMD(change_bss, SET_BSS); 1497 CMD(auth, AUTHENTICATE); 1498 CMD(assoc, ASSOCIATE); 1499 CMD(deauth, DEAUTHENTICATE); 1500 CMD(disassoc, DISASSOCIATE); 1501 CMD(join_ibss, JOIN_IBSS); 1502 CMD(join_mesh, JOIN_MESH); 1503 CMD(set_pmksa, SET_PMKSA); 1504 CMD(del_pmksa, DEL_PMKSA); 1505 CMD(flush_pmksa, FLUSH_PMKSA); 1506 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1507 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1508 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1509 CMD(mgmt_tx, FRAME); 1510 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1511 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1512 i++; 1513 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1514 goto nla_put_failure; 1515 } 1516 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1517 rdev->ops->join_mesh) { 1518 i++; 1519 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1520 goto nla_put_failure; 1521 } 1522 CMD(set_wds_peer, SET_WDS_PEER); 1523 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1524 CMD(tdls_mgmt, TDLS_MGMT); 1525 CMD(tdls_oper, TDLS_OPER); 1526 } 1527 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1528 CMD(sched_scan_start, START_SCHED_SCAN); 1529 CMD(probe_client, PROBE_CLIENT); 1530 CMD(set_noack_map, SET_NOACK_MAP); 1531 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1532 i++; 1533 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1534 goto nla_put_failure; 1535 } 1536 CMD(start_p2p_device, START_P2P_DEVICE); 1537 CMD(set_mcast_rate, SET_MCAST_RATE); 1538 #ifdef CONFIG_NL80211_TESTMODE 1539 CMD(testmode_cmd, TESTMODE); 1540 #endif 1541 if (state->split) { 1542 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1543 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1544 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1545 CMD(channel_switch, CHANNEL_SWITCH); 1546 CMD(set_qos_map, SET_QOS_MAP); 1547 if (rdev->wiphy.features & 1548 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1549 CMD(add_tx_ts, ADD_TX_TS); 1550 } 1551 /* add into the if now */ 1552 #undef CMD 1553 1554 if (rdev->ops->connect || rdev->ops->auth) { 1555 i++; 1556 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1557 goto nla_put_failure; 1558 } 1559 1560 if (rdev->ops->disconnect || rdev->ops->deauth) { 1561 i++; 1562 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1563 goto nla_put_failure; 1564 } 1565 1566 nla_nest_end(msg, nl_cmds); 1567 state->split_start++; 1568 if (state->split) 1569 break; 1570 case 5: 1571 if (rdev->ops->remain_on_channel && 1572 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1573 nla_put_u32(msg, 1574 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1575 rdev->wiphy.max_remain_on_channel_duration)) 1576 goto nla_put_failure; 1577 1578 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1579 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1580 goto nla_put_failure; 1581 1582 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1583 goto nla_put_failure; 1584 state->split_start++; 1585 if (state->split) 1586 break; 1587 case 6: 1588 #ifdef CONFIG_PM 1589 if (nl80211_send_wowlan(msg, rdev, state->split)) 1590 goto nla_put_failure; 1591 state->split_start++; 1592 if (state->split) 1593 break; 1594 #else 1595 state->split_start++; 1596 #endif 1597 case 7: 1598 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1599 rdev->wiphy.software_iftypes)) 1600 goto nla_put_failure; 1601 1602 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1603 state->split)) 1604 goto nla_put_failure; 1605 1606 state->split_start++; 1607 if (state->split) 1608 break; 1609 case 8: 1610 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1611 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1612 rdev->wiphy.ap_sme_capa)) 1613 goto nla_put_failure; 1614 1615 features = rdev->wiphy.features; 1616 /* 1617 * We can only add the per-channel limit information if the 1618 * dump is split, otherwise it makes it too big. Therefore 1619 * only advertise it in that case. 1620 */ 1621 if (state->split) 1622 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1623 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1624 goto nla_put_failure; 1625 1626 if (rdev->wiphy.ht_capa_mod_mask && 1627 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1628 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1629 rdev->wiphy.ht_capa_mod_mask)) 1630 goto nla_put_failure; 1631 1632 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1633 rdev->wiphy.max_acl_mac_addrs && 1634 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1635 rdev->wiphy.max_acl_mac_addrs)) 1636 goto nla_put_failure; 1637 1638 /* 1639 * Any information below this point is only available to 1640 * applications that can deal with it being split. This 1641 * helps ensure that newly added capabilities don't break 1642 * older tools by overrunning their buffers. 1643 * 1644 * We still increment split_start so that in the split 1645 * case we'll continue with more data in the next round, 1646 * but break unconditionally so unsplit data stops here. 1647 */ 1648 state->split_start++; 1649 break; 1650 case 9: 1651 if (rdev->wiphy.extended_capabilities && 1652 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1653 rdev->wiphy.extended_capabilities_len, 1654 rdev->wiphy.extended_capabilities) || 1655 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1656 rdev->wiphy.extended_capabilities_len, 1657 rdev->wiphy.extended_capabilities_mask))) 1658 goto nla_put_failure; 1659 1660 if (rdev->wiphy.vht_capa_mod_mask && 1661 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1662 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1663 rdev->wiphy.vht_capa_mod_mask)) 1664 goto nla_put_failure; 1665 1666 state->split_start++; 1667 break; 1668 case 10: 1669 if (nl80211_send_coalesce(msg, rdev)) 1670 goto nla_put_failure; 1671 1672 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1673 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1674 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1675 goto nla_put_failure; 1676 1677 if (rdev->wiphy.max_ap_assoc_sta && 1678 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1679 rdev->wiphy.max_ap_assoc_sta)) 1680 goto nla_put_failure; 1681 1682 state->split_start++; 1683 break; 1684 case 11: 1685 if (rdev->wiphy.n_vendor_commands) { 1686 const struct nl80211_vendor_cmd_info *info; 1687 struct nlattr *nested; 1688 1689 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1690 if (!nested) 1691 goto nla_put_failure; 1692 1693 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1694 info = &rdev->wiphy.vendor_commands[i].info; 1695 if (nla_put(msg, i + 1, sizeof(*info), info)) 1696 goto nla_put_failure; 1697 } 1698 nla_nest_end(msg, nested); 1699 } 1700 1701 if (rdev->wiphy.n_vendor_events) { 1702 const struct nl80211_vendor_cmd_info *info; 1703 struct nlattr *nested; 1704 1705 nested = nla_nest_start(msg, 1706 NL80211_ATTR_VENDOR_EVENTS); 1707 if (!nested) 1708 goto nla_put_failure; 1709 1710 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1711 info = &rdev->wiphy.vendor_events[i]; 1712 if (nla_put(msg, i + 1, sizeof(*info), info)) 1713 goto nla_put_failure; 1714 } 1715 nla_nest_end(msg, nested); 1716 } 1717 state->split_start++; 1718 break; 1719 case 12: 1720 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1721 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1722 rdev->wiphy.max_num_csa_counters)) 1723 goto nla_put_failure; 1724 1725 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1726 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1727 goto nla_put_failure; 1728 1729 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1730 sizeof(rdev->wiphy.ext_features), 1731 rdev->wiphy.ext_features)) 1732 goto nla_put_failure; 1733 1734 /* done */ 1735 state->split_start = 0; 1736 break; 1737 } 1738 finish: 1739 genlmsg_end(msg, hdr); 1740 return 0; 1741 1742 nla_put_failure: 1743 genlmsg_cancel(msg, hdr); 1744 return -EMSGSIZE; 1745 } 1746 1747 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1748 struct netlink_callback *cb, 1749 struct nl80211_dump_wiphy_state *state) 1750 { 1751 struct nlattr **tb = nl80211_fam.attrbuf; 1752 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1753 tb, nl80211_fam.maxattr, nl80211_policy); 1754 /* ignore parse errors for backward compatibility */ 1755 if (ret) 1756 return 0; 1757 1758 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1759 if (tb[NL80211_ATTR_WIPHY]) 1760 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1761 if (tb[NL80211_ATTR_WDEV]) 1762 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1763 if (tb[NL80211_ATTR_IFINDEX]) { 1764 struct net_device *netdev; 1765 struct cfg80211_registered_device *rdev; 1766 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1767 1768 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1769 if (!netdev) 1770 return -ENODEV; 1771 if (netdev->ieee80211_ptr) { 1772 rdev = wiphy_to_rdev( 1773 netdev->ieee80211_ptr->wiphy); 1774 state->filter_wiphy = rdev->wiphy_idx; 1775 } 1776 } 1777 1778 return 0; 1779 } 1780 1781 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1782 { 1783 int idx = 0, ret; 1784 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1785 struct cfg80211_registered_device *rdev; 1786 1787 rtnl_lock(); 1788 if (!state) { 1789 state = kzalloc(sizeof(*state), GFP_KERNEL); 1790 if (!state) { 1791 rtnl_unlock(); 1792 return -ENOMEM; 1793 } 1794 state->filter_wiphy = -1; 1795 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1796 if (ret) { 1797 kfree(state); 1798 rtnl_unlock(); 1799 return ret; 1800 } 1801 cb->args[0] = (long)state; 1802 } 1803 1804 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1805 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1806 continue; 1807 if (++idx <= state->start) 1808 continue; 1809 if (state->filter_wiphy != -1 && 1810 state->filter_wiphy != rdev->wiphy_idx) 1811 continue; 1812 /* attempt to fit multiple wiphy data chunks into the skb */ 1813 do { 1814 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1815 skb, 1816 NETLINK_CB(cb->skb).portid, 1817 cb->nlh->nlmsg_seq, 1818 NLM_F_MULTI, state); 1819 if (ret < 0) { 1820 /* 1821 * If sending the wiphy data didn't fit (ENOBUFS 1822 * or EMSGSIZE returned), this SKB is still 1823 * empty (so it's not too big because another 1824 * wiphy dataset is already in the skb) and 1825 * we've not tried to adjust the dump allocation 1826 * yet ... then adjust the alloc size to be 1827 * bigger, and return 1 but with the empty skb. 1828 * This results in an empty message being RX'ed 1829 * in userspace, but that is ignored. 1830 * 1831 * We can then retry with the larger buffer. 1832 */ 1833 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1834 !skb->len && !state->split && 1835 cb->min_dump_alloc < 4096) { 1836 cb->min_dump_alloc = 4096; 1837 state->split_start = 0; 1838 rtnl_unlock(); 1839 return 1; 1840 } 1841 idx--; 1842 break; 1843 } 1844 } while (state->split_start > 0); 1845 break; 1846 } 1847 rtnl_unlock(); 1848 1849 state->start = idx; 1850 1851 return skb->len; 1852 } 1853 1854 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1855 { 1856 kfree((void *)cb->args[0]); 1857 return 0; 1858 } 1859 1860 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1861 { 1862 struct sk_buff *msg; 1863 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1864 struct nl80211_dump_wiphy_state state = {}; 1865 1866 msg = nlmsg_new(4096, GFP_KERNEL); 1867 if (!msg) 1868 return -ENOMEM; 1869 1870 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1871 info->snd_portid, info->snd_seq, 0, 1872 &state) < 0) { 1873 nlmsg_free(msg); 1874 return -ENOBUFS; 1875 } 1876 1877 return genlmsg_reply(msg, info); 1878 } 1879 1880 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1881 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1882 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1883 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1884 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1885 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1886 }; 1887 1888 static int parse_txq_params(struct nlattr *tb[], 1889 struct ieee80211_txq_params *txq_params) 1890 { 1891 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1892 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1893 !tb[NL80211_TXQ_ATTR_AIFS]) 1894 return -EINVAL; 1895 1896 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1897 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1898 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1899 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1900 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1901 1902 if (txq_params->ac >= NL80211_NUM_ACS) 1903 return -EINVAL; 1904 1905 return 0; 1906 } 1907 1908 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1909 { 1910 /* 1911 * You can only set the channel explicitly for WDS interfaces, 1912 * all others have their channel managed via their respective 1913 * "establish a connection" command (connect, join, ...) 1914 * 1915 * For AP/GO and mesh mode, the channel can be set with the 1916 * channel userspace API, but is only stored and passed to the 1917 * low-level driver when the AP starts or the mesh is joined. 1918 * This is for backward compatibility, userspace can also give 1919 * the channel in the start-ap or join-mesh commands instead. 1920 * 1921 * Monitors are special as they are normally slaved to 1922 * whatever else is going on, so they have their own special 1923 * operation to set the monitor channel if possible. 1924 */ 1925 return !wdev || 1926 wdev->iftype == NL80211_IFTYPE_AP || 1927 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1928 wdev->iftype == NL80211_IFTYPE_MONITOR || 1929 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1930 } 1931 1932 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1933 struct genl_info *info, 1934 struct cfg80211_chan_def *chandef) 1935 { 1936 u32 control_freq; 1937 1938 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1939 return -EINVAL; 1940 1941 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1942 1943 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1944 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1945 chandef->center_freq1 = control_freq; 1946 chandef->center_freq2 = 0; 1947 1948 /* Primary channel not allowed */ 1949 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1950 return -EINVAL; 1951 1952 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1953 enum nl80211_channel_type chantype; 1954 1955 chantype = nla_get_u32( 1956 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1957 1958 switch (chantype) { 1959 case NL80211_CHAN_NO_HT: 1960 case NL80211_CHAN_HT20: 1961 case NL80211_CHAN_HT40PLUS: 1962 case NL80211_CHAN_HT40MINUS: 1963 cfg80211_chandef_create(chandef, chandef->chan, 1964 chantype); 1965 break; 1966 default: 1967 return -EINVAL; 1968 } 1969 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1970 chandef->width = 1971 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1972 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1973 chandef->center_freq1 = 1974 nla_get_u32( 1975 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1976 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1977 chandef->center_freq2 = 1978 nla_get_u32( 1979 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1980 } 1981 1982 if (!cfg80211_chandef_valid(chandef)) 1983 return -EINVAL; 1984 1985 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1986 IEEE80211_CHAN_DISABLED)) 1987 return -EINVAL; 1988 1989 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1990 chandef->width == NL80211_CHAN_WIDTH_10) && 1991 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1992 return -EINVAL; 1993 1994 return 0; 1995 } 1996 1997 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1998 struct net_device *dev, 1999 struct genl_info *info) 2000 { 2001 struct cfg80211_chan_def chandef; 2002 int result; 2003 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2004 struct wireless_dev *wdev = NULL; 2005 2006 if (dev) 2007 wdev = dev->ieee80211_ptr; 2008 if (!nl80211_can_set_dev_channel(wdev)) 2009 return -EOPNOTSUPP; 2010 if (wdev) 2011 iftype = wdev->iftype; 2012 2013 result = nl80211_parse_chandef(rdev, info, &chandef); 2014 if (result) 2015 return result; 2016 2017 switch (iftype) { 2018 case NL80211_IFTYPE_AP: 2019 case NL80211_IFTYPE_P2P_GO: 2020 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2021 iftype)) { 2022 result = -EINVAL; 2023 break; 2024 } 2025 if (wdev->beacon_interval) { 2026 if (!dev || !rdev->ops->set_ap_chanwidth || 2027 !(rdev->wiphy.features & 2028 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2029 result = -EBUSY; 2030 break; 2031 } 2032 2033 /* Only allow dynamic channel width changes */ 2034 if (chandef.chan != wdev->preset_chandef.chan) { 2035 result = -EBUSY; 2036 break; 2037 } 2038 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2039 if (result) 2040 break; 2041 } 2042 wdev->preset_chandef = chandef; 2043 result = 0; 2044 break; 2045 case NL80211_IFTYPE_MESH_POINT: 2046 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2047 break; 2048 case NL80211_IFTYPE_MONITOR: 2049 result = cfg80211_set_monitor_channel(rdev, &chandef); 2050 break; 2051 default: 2052 result = -EINVAL; 2053 } 2054 2055 return result; 2056 } 2057 2058 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2059 { 2060 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2061 struct net_device *netdev = info->user_ptr[1]; 2062 2063 return __nl80211_set_channel(rdev, netdev, info); 2064 } 2065 2066 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2067 { 2068 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2069 struct net_device *dev = info->user_ptr[1]; 2070 struct wireless_dev *wdev = dev->ieee80211_ptr; 2071 const u8 *bssid; 2072 2073 if (!info->attrs[NL80211_ATTR_MAC]) 2074 return -EINVAL; 2075 2076 if (netif_running(dev)) 2077 return -EBUSY; 2078 2079 if (!rdev->ops->set_wds_peer) 2080 return -EOPNOTSUPP; 2081 2082 if (wdev->iftype != NL80211_IFTYPE_WDS) 2083 return -EOPNOTSUPP; 2084 2085 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2086 return rdev_set_wds_peer(rdev, dev, bssid); 2087 } 2088 2089 2090 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2091 { 2092 struct cfg80211_registered_device *rdev; 2093 struct net_device *netdev = NULL; 2094 struct wireless_dev *wdev; 2095 int result = 0, rem_txq_params = 0; 2096 struct nlattr *nl_txq_params; 2097 u32 changed; 2098 u8 retry_short = 0, retry_long = 0; 2099 u32 frag_threshold = 0, rts_threshold = 0; 2100 u8 coverage_class = 0; 2101 2102 ASSERT_RTNL(); 2103 2104 /* 2105 * Try to find the wiphy and netdev. Normally this 2106 * function shouldn't need the netdev, but this is 2107 * done for backward compatibility -- previously 2108 * setting the channel was done per wiphy, but now 2109 * it is per netdev. Previous userland like hostapd 2110 * also passed a netdev to set_wiphy, so that it is 2111 * possible to let that go to the right netdev! 2112 */ 2113 2114 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2115 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2116 2117 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2118 if (netdev && netdev->ieee80211_ptr) 2119 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2120 else 2121 netdev = NULL; 2122 } 2123 2124 if (!netdev) { 2125 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2126 info->attrs); 2127 if (IS_ERR(rdev)) 2128 return PTR_ERR(rdev); 2129 wdev = NULL; 2130 netdev = NULL; 2131 result = 0; 2132 } else 2133 wdev = netdev->ieee80211_ptr; 2134 2135 /* 2136 * end workaround code, by now the rdev is available 2137 * and locked, and wdev may or may not be NULL. 2138 */ 2139 2140 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2141 result = cfg80211_dev_rename( 2142 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2143 2144 if (result) 2145 return result; 2146 2147 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2148 struct ieee80211_txq_params txq_params; 2149 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2150 2151 if (!rdev->ops->set_txq_params) 2152 return -EOPNOTSUPP; 2153 2154 if (!netdev) 2155 return -EINVAL; 2156 2157 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2158 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2159 return -EINVAL; 2160 2161 if (!netif_running(netdev)) 2162 return -ENETDOWN; 2163 2164 nla_for_each_nested(nl_txq_params, 2165 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2166 rem_txq_params) { 2167 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2168 nla_data(nl_txq_params), 2169 nla_len(nl_txq_params), 2170 txq_params_policy); 2171 if (result) 2172 return result; 2173 result = parse_txq_params(tb, &txq_params); 2174 if (result) 2175 return result; 2176 2177 result = rdev_set_txq_params(rdev, netdev, 2178 &txq_params); 2179 if (result) 2180 return result; 2181 } 2182 } 2183 2184 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2185 result = __nl80211_set_channel( 2186 rdev, 2187 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2188 info); 2189 if (result) 2190 return result; 2191 } 2192 2193 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2194 struct wireless_dev *txp_wdev = wdev; 2195 enum nl80211_tx_power_setting type; 2196 int idx, mbm = 0; 2197 2198 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2199 txp_wdev = NULL; 2200 2201 if (!rdev->ops->set_tx_power) 2202 return -EOPNOTSUPP; 2203 2204 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2205 type = nla_get_u32(info->attrs[idx]); 2206 2207 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2208 (type != NL80211_TX_POWER_AUTOMATIC)) 2209 return -EINVAL; 2210 2211 if (type != NL80211_TX_POWER_AUTOMATIC) { 2212 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2213 mbm = nla_get_u32(info->attrs[idx]); 2214 } 2215 2216 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2217 if (result) 2218 return result; 2219 } 2220 2221 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2222 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2223 u32 tx_ant, rx_ant; 2224 if ((!rdev->wiphy.available_antennas_tx && 2225 !rdev->wiphy.available_antennas_rx) || 2226 !rdev->ops->set_antenna) 2227 return -EOPNOTSUPP; 2228 2229 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2230 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2231 2232 /* reject antenna configurations which don't match the 2233 * available antenna masks, except for the "all" mask */ 2234 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2235 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2236 return -EINVAL; 2237 2238 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2239 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2240 2241 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2242 if (result) 2243 return result; 2244 } 2245 2246 changed = 0; 2247 2248 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2249 retry_short = nla_get_u8( 2250 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2251 if (retry_short == 0) 2252 return -EINVAL; 2253 2254 changed |= WIPHY_PARAM_RETRY_SHORT; 2255 } 2256 2257 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2258 retry_long = nla_get_u8( 2259 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2260 if (retry_long == 0) 2261 return -EINVAL; 2262 2263 changed |= WIPHY_PARAM_RETRY_LONG; 2264 } 2265 2266 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2267 frag_threshold = nla_get_u32( 2268 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2269 if (frag_threshold < 256) 2270 return -EINVAL; 2271 2272 if (frag_threshold != (u32) -1) { 2273 /* 2274 * Fragments (apart from the last one) are required to 2275 * have even length. Make the fragmentation code 2276 * simpler by stripping LSB should someone try to use 2277 * odd threshold value. 2278 */ 2279 frag_threshold &= ~0x1; 2280 } 2281 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2282 } 2283 2284 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2285 rts_threshold = nla_get_u32( 2286 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2287 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2288 } 2289 2290 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2291 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2292 return -EINVAL; 2293 2294 coverage_class = nla_get_u8( 2295 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2296 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2297 } 2298 2299 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2300 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2301 return -EOPNOTSUPP; 2302 2303 changed |= WIPHY_PARAM_DYN_ACK; 2304 } 2305 2306 if (changed) { 2307 u8 old_retry_short, old_retry_long; 2308 u32 old_frag_threshold, old_rts_threshold; 2309 u8 old_coverage_class; 2310 2311 if (!rdev->ops->set_wiphy_params) 2312 return -EOPNOTSUPP; 2313 2314 old_retry_short = rdev->wiphy.retry_short; 2315 old_retry_long = rdev->wiphy.retry_long; 2316 old_frag_threshold = rdev->wiphy.frag_threshold; 2317 old_rts_threshold = rdev->wiphy.rts_threshold; 2318 old_coverage_class = rdev->wiphy.coverage_class; 2319 2320 if (changed & WIPHY_PARAM_RETRY_SHORT) 2321 rdev->wiphy.retry_short = retry_short; 2322 if (changed & WIPHY_PARAM_RETRY_LONG) 2323 rdev->wiphy.retry_long = retry_long; 2324 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2325 rdev->wiphy.frag_threshold = frag_threshold; 2326 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2327 rdev->wiphy.rts_threshold = rts_threshold; 2328 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2329 rdev->wiphy.coverage_class = coverage_class; 2330 2331 result = rdev_set_wiphy_params(rdev, changed); 2332 if (result) { 2333 rdev->wiphy.retry_short = old_retry_short; 2334 rdev->wiphy.retry_long = old_retry_long; 2335 rdev->wiphy.frag_threshold = old_frag_threshold; 2336 rdev->wiphy.rts_threshold = old_rts_threshold; 2337 rdev->wiphy.coverage_class = old_coverage_class; 2338 return result; 2339 } 2340 } 2341 return 0; 2342 } 2343 2344 static inline u64 wdev_id(struct wireless_dev *wdev) 2345 { 2346 return (u64)wdev->identifier | 2347 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2348 } 2349 2350 static int nl80211_send_chandef(struct sk_buff *msg, 2351 const struct cfg80211_chan_def *chandef) 2352 { 2353 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2354 return -EINVAL; 2355 2356 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2357 chandef->chan->center_freq)) 2358 return -ENOBUFS; 2359 switch (chandef->width) { 2360 case NL80211_CHAN_WIDTH_20_NOHT: 2361 case NL80211_CHAN_WIDTH_20: 2362 case NL80211_CHAN_WIDTH_40: 2363 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2364 cfg80211_get_chandef_type(chandef))) 2365 return -ENOBUFS; 2366 break; 2367 default: 2368 break; 2369 } 2370 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2371 return -ENOBUFS; 2372 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2373 return -ENOBUFS; 2374 if (chandef->center_freq2 && 2375 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2376 return -ENOBUFS; 2377 return 0; 2378 } 2379 2380 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2381 struct cfg80211_registered_device *rdev, 2382 struct wireless_dev *wdev, bool removal) 2383 { 2384 struct net_device *dev = wdev->netdev; 2385 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2386 void *hdr; 2387 2388 if (removal) 2389 cmd = NL80211_CMD_DEL_INTERFACE; 2390 2391 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2392 if (!hdr) 2393 return -1; 2394 2395 if (dev && 2396 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2397 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2398 goto nla_put_failure; 2399 2400 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2401 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2402 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2403 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2404 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2405 rdev->devlist_generation ^ 2406 (cfg80211_rdev_list_generation << 2))) 2407 goto nla_put_failure; 2408 2409 if (rdev->ops->get_channel) { 2410 int ret; 2411 struct cfg80211_chan_def chandef; 2412 2413 ret = rdev_get_channel(rdev, wdev, &chandef); 2414 if (ret == 0) { 2415 if (nl80211_send_chandef(msg, &chandef)) 2416 goto nla_put_failure; 2417 } 2418 } 2419 2420 if (rdev->ops->get_tx_power) { 2421 int dbm, ret; 2422 2423 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2424 if (ret == 0 && 2425 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2426 DBM_TO_MBM(dbm))) 2427 goto nla_put_failure; 2428 } 2429 2430 if (wdev->ssid_len) { 2431 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2432 goto nla_put_failure; 2433 } 2434 2435 genlmsg_end(msg, hdr); 2436 return 0; 2437 2438 nla_put_failure: 2439 genlmsg_cancel(msg, hdr); 2440 return -EMSGSIZE; 2441 } 2442 2443 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2444 { 2445 int wp_idx = 0; 2446 int if_idx = 0; 2447 int wp_start = cb->args[0]; 2448 int if_start = cb->args[1]; 2449 struct cfg80211_registered_device *rdev; 2450 struct wireless_dev *wdev; 2451 2452 rtnl_lock(); 2453 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2454 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2455 continue; 2456 if (wp_idx < wp_start) { 2457 wp_idx++; 2458 continue; 2459 } 2460 if_idx = 0; 2461 2462 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2463 if (if_idx < if_start) { 2464 if_idx++; 2465 continue; 2466 } 2467 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2468 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2469 rdev, wdev, false) < 0) { 2470 goto out; 2471 } 2472 if_idx++; 2473 } 2474 2475 wp_idx++; 2476 } 2477 out: 2478 rtnl_unlock(); 2479 2480 cb->args[0] = wp_idx; 2481 cb->args[1] = if_idx; 2482 2483 return skb->len; 2484 } 2485 2486 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2487 { 2488 struct sk_buff *msg; 2489 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2490 struct wireless_dev *wdev = info->user_ptr[1]; 2491 2492 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2493 if (!msg) 2494 return -ENOMEM; 2495 2496 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2497 rdev, wdev, false) < 0) { 2498 nlmsg_free(msg); 2499 return -ENOBUFS; 2500 } 2501 2502 return genlmsg_reply(msg, info); 2503 } 2504 2505 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2506 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2507 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2508 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2509 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2510 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2511 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2512 }; 2513 2514 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2515 { 2516 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2517 int flag; 2518 2519 *mntrflags = 0; 2520 2521 if (!nla) 2522 return -EINVAL; 2523 2524 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2525 nla, mntr_flags_policy)) 2526 return -EINVAL; 2527 2528 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2529 if (flags[flag]) 2530 *mntrflags |= (1<<flag); 2531 2532 return 0; 2533 } 2534 2535 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2536 struct net_device *netdev, u8 use_4addr, 2537 enum nl80211_iftype iftype) 2538 { 2539 if (!use_4addr) { 2540 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2541 return -EBUSY; 2542 return 0; 2543 } 2544 2545 switch (iftype) { 2546 case NL80211_IFTYPE_AP_VLAN: 2547 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2548 return 0; 2549 break; 2550 case NL80211_IFTYPE_STATION: 2551 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2552 return 0; 2553 break; 2554 default: 2555 break; 2556 } 2557 2558 return -EOPNOTSUPP; 2559 } 2560 2561 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2562 { 2563 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2564 struct vif_params params; 2565 int err; 2566 enum nl80211_iftype otype, ntype; 2567 struct net_device *dev = info->user_ptr[1]; 2568 u32 _flags, *flags = NULL; 2569 bool change = false; 2570 2571 memset(¶ms, 0, sizeof(params)); 2572 2573 otype = ntype = dev->ieee80211_ptr->iftype; 2574 2575 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2576 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2577 if (otype != ntype) 2578 change = true; 2579 if (ntype > NL80211_IFTYPE_MAX) 2580 return -EINVAL; 2581 } 2582 2583 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2584 struct wireless_dev *wdev = dev->ieee80211_ptr; 2585 2586 if (ntype != NL80211_IFTYPE_MESH_POINT) 2587 return -EINVAL; 2588 if (netif_running(dev)) 2589 return -EBUSY; 2590 2591 wdev_lock(wdev); 2592 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2593 IEEE80211_MAX_MESH_ID_LEN); 2594 wdev->mesh_id_up_len = 2595 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2596 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2597 wdev->mesh_id_up_len); 2598 wdev_unlock(wdev); 2599 } 2600 2601 if (info->attrs[NL80211_ATTR_4ADDR]) { 2602 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2603 change = true; 2604 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2605 if (err) 2606 return err; 2607 } else { 2608 params.use_4addr = -1; 2609 } 2610 2611 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2612 if (ntype != NL80211_IFTYPE_MONITOR) 2613 return -EINVAL; 2614 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2615 &_flags); 2616 if (err) 2617 return err; 2618 2619 flags = &_flags; 2620 change = true; 2621 } 2622 2623 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2624 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2625 return -EOPNOTSUPP; 2626 2627 if (change) 2628 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2629 else 2630 err = 0; 2631 2632 if (!err && params.use_4addr != -1) 2633 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2634 2635 return err; 2636 } 2637 2638 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2639 { 2640 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2641 struct vif_params params; 2642 struct wireless_dev *wdev; 2643 struct sk_buff *msg, *event; 2644 int err; 2645 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2646 u32 flags; 2647 2648 /* to avoid failing a new interface creation due to pending removal */ 2649 cfg80211_destroy_ifaces(rdev); 2650 2651 memset(¶ms, 0, sizeof(params)); 2652 2653 if (!info->attrs[NL80211_ATTR_IFNAME]) 2654 return -EINVAL; 2655 2656 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2657 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2658 if (type > NL80211_IFTYPE_MAX) 2659 return -EINVAL; 2660 } 2661 2662 if (!rdev->ops->add_virtual_intf || 2663 !(rdev->wiphy.interface_modes & (1 << type))) 2664 return -EOPNOTSUPP; 2665 2666 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2667 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2668 info->attrs[NL80211_ATTR_MAC]) { 2669 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2670 ETH_ALEN); 2671 if (!is_valid_ether_addr(params.macaddr)) 2672 return -EADDRNOTAVAIL; 2673 } 2674 2675 if (info->attrs[NL80211_ATTR_4ADDR]) { 2676 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2677 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2678 if (err) 2679 return err; 2680 } 2681 2682 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2683 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2684 &flags); 2685 2686 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2687 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2688 return -EOPNOTSUPP; 2689 2690 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2691 if (!msg) 2692 return -ENOMEM; 2693 2694 wdev = rdev_add_virtual_intf(rdev, 2695 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2696 NET_NAME_USER, type, err ? NULL : &flags, 2697 ¶ms); 2698 if (WARN_ON(!wdev)) { 2699 nlmsg_free(msg); 2700 return -EPROTO; 2701 } else if (IS_ERR(wdev)) { 2702 nlmsg_free(msg); 2703 return PTR_ERR(wdev); 2704 } 2705 2706 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2707 wdev->owner_nlportid = info->snd_portid; 2708 2709 switch (type) { 2710 case NL80211_IFTYPE_MESH_POINT: 2711 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2712 break; 2713 wdev_lock(wdev); 2714 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2715 IEEE80211_MAX_MESH_ID_LEN); 2716 wdev->mesh_id_up_len = 2717 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2718 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2719 wdev->mesh_id_up_len); 2720 wdev_unlock(wdev); 2721 break; 2722 case NL80211_IFTYPE_P2P_DEVICE: 2723 /* 2724 * P2P Device doesn't have a netdev, so doesn't go 2725 * through the netdev notifier and must be added here 2726 */ 2727 mutex_init(&wdev->mtx); 2728 INIT_LIST_HEAD(&wdev->event_list); 2729 spin_lock_init(&wdev->event_lock); 2730 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2731 spin_lock_init(&wdev->mgmt_registrations_lock); 2732 2733 wdev->identifier = ++rdev->wdev_id; 2734 list_add_rcu(&wdev->list, &rdev->wdev_list); 2735 rdev->devlist_generation++; 2736 break; 2737 default: 2738 break; 2739 } 2740 2741 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2742 rdev, wdev, false) < 0) { 2743 nlmsg_free(msg); 2744 return -ENOBUFS; 2745 } 2746 2747 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2748 if (event) { 2749 if (nl80211_send_iface(event, 0, 0, 0, 2750 rdev, wdev, false) < 0) { 2751 nlmsg_free(event); 2752 goto out; 2753 } 2754 2755 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2756 event, 0, NL80211_MCGRP_CONFIG, 2757 GFP_KERNEL); 2758 } 2759 2760 out: 2761 return genlmsg_reply(msg, info); 2762 } 2763 2764 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2765 { 2766 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2767 struct wireless_dev *wdev = info->user_ptr[1]; 2768 struct sk_buff *msg; 2769 int status; 2770 2771 if (!rdev->ops->del_virtual_intf) 2772 return -EOPNOTSUPP; 2773 2774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2775 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2776 nlmsg_free(msg); 2777 msg = NULL; 2778 } 2779 2780 /* 2781 * If we remove a wireless device without a netdev then clear 2782 * user_ptr[1] so that nl80211_post_doit won't dereference it 2783 * to check if it needs to do dev_put(). Otherwise it crashes 2784 * since the wdev has been freed, unlike with a netdev where 2785 * we need the dev_put() for the netdev to really be freed. 2786 */ 2787 if (!wdev->netdev) 2788 info->user_ptr[1] = NULL; 2789 2790 status = rdev_del_virtual_intf(rdev, wdev); 2791 if (status >= 0 && msg) 2792 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2793 msg, 0, NL80211_MCGRP_CONFIG, 2794 GFP_KERNEL); 2795 else 2796 nlmsg_free(msg); 2797 2798 return status; 2799 } 2800 2801 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2802 { 2803 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2804 struct net_device *dev = info->user_ptr[1]; 2805 u16 noack_map; 2806 2807 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2808 return -EINVAL; 2809 2810 if (!rdev->ops->set_noack_map) 2811 return -EOPNOTSUPP; 2812 2813 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2814 2815 return rdev_set_noack_map(rdev, dev, noack_map); 2816 } 2817 2818 struct get_key_cookie { 2819 struct sk_buff *msg; 2820 int error; 2821 int idx; 2822 }; 2823 2824 static void get_key_callback(void *c, struct key_params *params) 2825 { 2826 struct nlattr *key; 2827 struct get_key_cookie *cookie = c; 2828 2829 if ((params->key && 2830 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2831 params->key_len, params->key)) || 2832 (params->seq && 2833 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2834 params->seq_len, params->seq)) || 2835 (params->cipher && 2836 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2837 params->cipher))) 2838 goto nla_put_failure; 2839 2840 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2841 if (!key) 2842 goto nla_put_failure; 2843 2844 if ((params->key && 2845 nla_put(cookie->msg, NL80211_KEY_DATA, 2846 params->key_len, params->key)) || 2847 (params->seq && 2848 nla_put(cookie->msg, NL80211_KEY_SEQ, 2849 params->seq_len, params->seq)) || 2850 (params->cipher && 2851 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2852 params->cipher))) 2853 goto nla_put_failure; 2854 2855 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2856 goto nla_put_failure; 2857 2858 nla_nest_end(cookie->msg, key); 2859 2860 return; 2861 nla_put_failure: 2862 cookie->error = 1; 2863 } 2864 2865 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2866 { 2867 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2868 int err; 2869 struct net_device *dev = info->user_ptr[1]; 2870 u8 key_idx = 0; 2871 const u8 *mac_addr = NULL; 2872 bool pairwise; 2873 struct get_key_cookie cookie = { 2874 .error = 0, 2875 }; 2876 void *hdr; 2877 struct sk_buff *msg; 2878 2879 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2880 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2881 2882 if (key_idx > 5) 2883 return -EINVAL; 2884 2885 if (info->attrs[NL80211_ATTR_MAC]) 2886 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2887 2888 pairwise = !!mac_addr; 2889 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2890 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2891 if (kt >= NUM_NL80211_KEYTYPES) 2892 return -EINVAL; 2893 if (kt != NL80211_KEYTYPE_GROUP && 2894 kt != NL80211_KEYTYPE_PAIRWISE) 2895 return -EINVAL; 2896 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2897 } 2898 2899 if (!rdev->ops->get_key) 2900 return -EOPNOTSUPP; 2901 2902 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2903 return -ENOENT; 2904 2905 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2906 if (!msg) 2907 return -ENOMEM; 2908 2909 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2910 NL80211_CMD_NEW_KEY); 2911 if (!hdr) 2912 goto nla_put_failure; 2913 2914 cookie.msg = msg; 2915 cookie.idx = key_idx; 2916 2917 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2918 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2919 goto nla_put_failure; 2920 if (mac_addr && 2921 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2922 goto nla_put_failure; 2923 2924 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2925 get_key_callback); 2926 2927 if (err) 2928 goto free_msg; 2929 2930 if (cookie.error) 2931 goto nla_put_failure; 2932 2933 genlmsg_end(msg, hdr); 2934 return genlmsg_reply(msg, info); 2935 2936 nla_put_failure: 2937 err = -ENOBUFS; 2938 free_msg: 2939 nlmsg_free(msg); 2940 return err; 2941 } 2942 2943 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2944 { 2945 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2946 struct key_parse key; 2947 int err; 2948 struct net_device *dev = info->user_ptr[1]; 2949 2950 err = nl80211_parse_key(info, &key); 2951 if (err) 2952 return err; 2953 2954 if (key.idx < 0) 2955 return -EINVAL; 2956 2957 /* only support setting default key */ 2958 if (!key.def && !key.defmgmt) 2959 return -EINVAL; 2960 2961 wdev_lock(dev->ieee80211_ptr); 2962 2963 if (key.def) { 2964 if (!rdev->ops->set_default_key) { 2965 err = -EOPNOTSUPP; 2966 goto out; 2967 } 2968 2969 err = nl80211_key_allowed(dev->ieee80211_ptr); 2970 if (err) 2971 goto out; 2972 2973 err = rdev_set_default_key(rdev, dev, key.idx, 2974 key.def_uni, key.def_multi); 2975 2976 if (err) 2977 goto out; 2978 2979 #ifdef CONFIG_CFG80211_WEXT 2980 dev->ieee80211_ptr->wext.default_key = key.idx; 2981 #endif 2982 } else { 2983 if (key.def_uni || !key.def_multi) { 2984 err = -EINVAL; 2985 goto out; 2986 } 2987 2988 if (!rdev->ops->set_default_mgmt_key) { 2989 err = -EOPNOTSUPP; 2990 goto out; 2991 } 2992 2993 err = nl80211_key_allowed(dev->ieee80211_ptr); 2994 if (err) 2995 goto out; 2996 2997 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2998 if (err) 2999 goto out; 3000 3001 #ifdef CONFIG_CFG80211_WEXT 3002 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3003 #endif 3004 } 3005 3006 out: 3007 wdev_unlock(dev->ieee80211_ptr); 3008 3009 return err; 3010 } 3011 3012 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3013 { 3014 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3015 int err; 3016 struct net_device *dev = info->user_ptr[1]; 3017 struct key_parse key; 3018 const u8 *mac_addr = NULL; 3019 3020 err = nl80211_parse_key(info, &key); 3021 if (err) 3022 return err; 3023 3024 if (!key.p.key) 3025 return -EINVAL; 3026 3027 if (info->attrs[NL80211_ATTR_MAC]) 3028 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3029 3030 if (key.type == -1) { 3031 if (mac_addr) 3032 key.type = NL80211_KEYTYPE_PAIRWISE; 3033 else 3034 key.type = NL80211_KEYTYPE_GROUP; 3035 } 3036 3037 /* for now */ 3038 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3039 key.type != NL80211_KEYTYPE_GROUP) 3040 return -EINVAL; 3041 3042 if (!rdev->ops->add_key) 3043 return -EOPNOTSUPP; 3044 3045 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3046 key.type == NL80211_KEYTYPE_PAIRWISE, 3047 mac_addr)) 3048 return -EINVAL; 3049 3050 wdev_lock(dev->ieee80211_ptr); 3051 err = nl80211_key_allowed(dev->ieee80211_ptr); 3052 if (!err) 3053 err = rdev_add_key(rdev, dev, key.idx, 3054 key.type == NL80211_KEYTYPE_PAIRWISE, 3055 mac_addr, &key.p); 3056 wdev_unlock(dev->ieee80211_ptr); 3057 3058 return err; 3059 } 3060 3061 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3062 { 3063 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3064 int err; 3065 struct net_device *dev = info->user_ptr[1]; 3066 u8 *mac_addr = NULL; 3067 struct key_parse key; 3068 3069 err = nl80211_parse_key(info, &key); 3070 if (err) 3071 return err; 3072 3073 if (info->attrs[NL80211_ATTR_MAC]) 3074 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3075 3076 if (key.type == -1) { 3077 if (mac_addr) 3078 key.type = NL80211_KEYTYPE_PAIRWISE; 3079 else 3080 key.type = NL80211_KEYTYPE_GROUP; 3081 } 3082 3083 /* for now */ 3084 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3085 key.type != NL80211_KEYTYPE_GROUP) 3086 return -EINVAL; 3087 3088 if (!rdev->ops->del_key) 3089 return -EOPNOTSUPP; 3090 3091 wdev_lock(dev->ieee80211_ptr); 3092 err = nl80211_key_allowed(dev->ieee80211_ptr); 3093 3094 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3095 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3096 err = -ENOENT; 3097 3098 if (!err) 3099 err = rdev_del_key(rdev, dev, key.idx, 3100 key.type == NL80211_KEYTYPE_PAIRWISE, 3101 mac_addr); 3102 3103 #ifdef CONFIG_CFG80211_WEXT 3104 if (!err) { 3105 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3106 dev->ieee80211_ptr->wext.default_key = -1; 3107 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3108 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3109 } 3110 #endif 3111 wdev_unlock(dev->ieee80211_ptr); 3112 3113 return err; 3114 } 3115 3116 /* This function returns an error or the number of nested attributes */ 3117 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3118 { 3119 struct nlattr *attr; 3120 int n_entries = 0, tmp; 3121 3122 nla_for_each_nested(attr, nl_attr, tmp) { 3123 if (nla_len(attr) != ETH_ALEN) 3124 return -EINVAL; 3125 3126 n_entries++; 3127 } 3128 3129 return n_entries; 3130 } 3131 3132 /* 3133 * This function parses ACL information and allocates memory for ACL data. 3134 * On successful return, the calling function is responsible to free the 3135 * ACL buffer returned by this function. 3136 */ 3137 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3138 struct genl_info *info) 3139 { 3140 enum nl80211_acl_policy acl_policy; 3141 struct nlattr *attr; 3142 struct cfg80211_acl_data *acl; 3143 int i = 0, n_entries, tmp; 3144 3145 if (!wiphy->max_acl_mac_addrs) 3146 return ERR_PTR(-EOPNOTSUPP); 3147 3148 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3149 return ERR_PTR(-EINVAL); 3150 3151 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3152 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3153 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3154 return ERR_PTR(-EINVAL); 3155 3156 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3157 return ERR_PTR(-EINVAL); 3158 3159 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3160 if (n_entries < 0) 3161 return ERR_PTR(n_entries); 3162 3163 if (n_entries > wiphy->max_acl_mac_addrs) 3164 return ERR_PTR(-ENOTSUPP); 3165 3166 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3167 GFP_KERNEL); 3168 if (!acl) 3169 return ERR_PTR(-ENOMEM); 3170 3171 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3172 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3173 i++; 3174 } 3175 3176 acl->n_acl_entries = n_entries; 3177 acl->acl_policy = acl_policy; 3178 3179 return acl; 3180 } 3181 3182 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3183 { 3184 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3185 struct net_device *dev = info->user_ptr[1]; 3186 struct cfg80211_acl_data *acl; 3187 int err; 3188 3189 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3190 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3191 return -EOPNOTSUPP; 3192 3193 if (!dev->ieee80211_ptr->beacon_interval) 3194 return -EINVAL; 3195 3196 acl = parse_acl_data(&rdev->wiphy, info); 3197 if (IS_ERR(acl)) 3198 return PTR_ERR(acl); 3199 3200 err = rdev_set_mac_acl(rdev, dev, acl); 3201 3202 kfree(acl); 3203 3204 return err; 3205 } 3206 3207 static int nl80211_parse_beacon(struct nlattr *attrs[], 3208 struct cfg80211_beacon_data *bcn) 3209 { 3210 bool haveinfo = false; 3211 3212 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3213 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3214 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3215 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3216 return -EINVAL; 3217 3218 memset(bcn, 0, sizeof(*bcn)); 3219 3220 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3221 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3222 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3223 if (!bcn->head_len) 3224 return -EINVAL; 3225 haveinfo = true; 3226 } 3227 3228 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3229 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3230 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3231 haveinfo = true; 3232 } 3233 3234 if (!haveinfo) 3235 return -EINVAL; 3236 3237 if (attrs[NL80211_ATTR_IE]) { 3238 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3239 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3240 } 3241 3242 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3243 bcn->proberesp_ies = 3244 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3245 bcn->proberesp_ies_len = 3246 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3247 } 3248 3249 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3250 bcn->assocresp_ies = 3251 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3252 bcn->assocresp_ies_len = 3253 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3254 } 3255 3256 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3257 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3258 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3259 } 3260 3261 return 0; 3262 } 3263 3264 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3265 struct cfg80211_ap_settings *params) 3266 { 3267 struct wireless_dev *wdev; 3268 bool ret = false; 3269 3270 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3271 if (wdev->iftype != NL80211_IFTYPE_AP && 3272 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3273 continue; 3274 3275 if (!wdev->preset_chandef.chan) 3276 continue; 3277 3278 params->chandef = wdev->preset_chandef; 3279 ret = true; 3280 break; 3281 } 3282 3283 return ret; 3284 } 3285 3286 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3287 enum nl80211_auth_type auth_type, 3288 enum nl80211_commands cmd) 3289 { 3290 if (auth_type > NL80211_AUTHTYPE_MAX) 3291 return false; 3292 3293 switch (cmd) { 3294 case NL80211_CMD_AUTHENTICATE: 3295 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3296 auth_type == NL80211_AUTHTYPE_SAE) 3297 return false; 3298 return true; 3299 case NL80211_CMD_CONNECT: 3300 case NL80211_CMD_START_AP: 3301 /* SAE not supported yet */ 3302 if (auth_type == NL80211_AUTHTYPE_SAE) 3303 return false; 3304 return true; 3305 default: 3306 return false; 3307 } 3308 } 3309 3310 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3311 { 3312 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3313 struct net_device *dev = info->user_ptr[1]; 3314 struct wireless_dev *wdev = dev->ieee80211_ptr; 3315 struct cfg80211_ap_settings params; 3316 int err; 3317 3318 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3319 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3320 return -EOPNOTSUPP; 3321 3322 if (!rdev->ops->start_ap) 3323 return -EOPNOTSUPP; 3324 3325 if (wdev->beacon_interval) 3326 return -EALREADY; 3327 3328 memset(¶ms, 0, sizeof(params)); 3329 3330 /* these are required for START_AP */ 3331 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3332 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3333 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3334 return -EINVAL; 3335 3336 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3337 if (err) 3338 return err; 3339 3340 params.beacon_interval = 3341 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3342 params.dtim_period = 3343 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3344 3345 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3346 if (err) 3347 return err; 3348 3349 /* 3350 * In theory, some of these attributes should be required here 3351 * but since they were not used when the command was originally 3352 * added, keep them optional for old user space programs to let 3353 * them continue to work with drivers that do not need the 3354 * additional information -- drivers must check! 3355 */ 3356 if (info->attrs[NL80211_ATTR_SSID]) { 3357 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3358 params.ssid_len = 3359 nla_len(info->attrs[NL80211_ATTR_SSID]); 3360 if (params.ssid_len == 0 || 3361 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3362 return -EINVAL; 3363 } 3364 3365 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3366 params.hidden_ssid = nla_get_u32( 3367 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3368 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3369 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3370 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3371 return -EINVAL; 3372 } 3373 3374 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3375 3376 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3377 params.auth_type = nla_get_u32( 3378 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3379 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3380 NL80211_CMD_START_AP)) 3381 return -EINVAL; 3382 } else 3383 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3384 3385 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3386 NL80211_MAX_NR_CIPHER_SUITES); 3387 if (err) 3388 return err; 3389 3390 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3391 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3392 return -EOPNOTSUPP; 3393 params.inactivity_timeout = nla_get_u16( 3394 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3395 } 3396 3397 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3399 return -EINVAL; 3400 params.p2p_ctwindow = 3401 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3402 if (params.p2p_ctwindow > 127) 3403 return -EINVAL; 3404 if (params.p2p_ctwindow != 0 && 3405 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3406 return -EINVAL; 3407 } 3408 3409 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3410 u8 tmp; 3411 3412 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3413 return -EINVAL; 3414 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3415 if (tmp > 1) 3416 return -EINVAL; 3417 params.p2p_opp_ps = tmp; 3418 if (params.p2p_opp_ps != 0 && 3419 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3420 return -EINVAL; 3421 } 3422 3423 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3424 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3425 if (err) 3426 return err; 3427 } else if (wdev->preset_chandef.chan) { 3428 params.chandef = wdev->preset_chandef; 3429 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3430 return -EINVAL; 3431 3432 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 3433 wdev->iftype)) 3434 return -EINVAL; 3435 3436 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3437 params.smps_mode = 3438 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3439 switch (params.smps_mode) { 3440 case NL80211_SMPS_OFF: 3441 break; 3442 case NL80211_SMPS_STATIC: 3443 if (!(rdev->wiphy.features & 3444 NL80211_FEATURE_STATIC_SMPS)) 3445 return -EINVAL; 3446 break; 3447 case NL80211_SMPS_DYNAMIC: 3448 if (!(rdev->wiphy.features & 3449 NL80211_FEATURE_DYNAMIC_SMPS)) 3450 return -EINVAL; 3451 break; 3452 default: 3453 return -EINVAL; 3454 } 3455 } else { 3456 params.smps_mode = NL80211_SMPS_OFF; 3457 } 3458 3459 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3460 params.acl = parse_acl_data(&rdev->wiphy, info); 3461 if (IS_ERR(params.acl)) 3462 return PTR_ERR(params.acl); 3463 } 3464 3465 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 3466 if (params.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) 3467 return -EOPNOTSUPP; 3468 3469 wdev_lock(wdev); 3470 err = rdev_start_ap(rdev, dev, ¶ms); 3471 if (!err) { 3472 wdev->preset_chandef = params.chandef; 3473 wdev->beacon_interval = params.beacon_interval; 3474 wdev->chandef = params.chandef; 3475 wdev->ssid_len = params.ssid_len; 3476 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3477 } 3478 wdev_unlock(wdev); 3479 3480 kfree(params.acl); 3481 3482 return err; 3483 } 3484 3485 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3486 { 3487 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3488 struct net_device *dev = info->user_ptr[1]; 3489 struct wireless_dev *wdev = dev->ieee80211_ptr; 3490 struct cfg80211_beacon_data params; 3491 int err; 3492 3493 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3494 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3495 return -EOPNOTSUPP; 3496 3497 if (!rdev->ops->change_beacon) 3498 return -EOPNOTSUPP; 3499 3500 if (!wdev->beacon_interval) 3501 return -EINVAL; 3502 3503 err = nl80211_parse_beacon(info->attrs, ¶ms); 3504 if (err) 3505 return err; 3506 3507 wdev_lock(wdev); 3508 err = rdev_change_beacon(rdev, dev, ¶ms); 3509 wdev_unlock(wdev); 3510 3511 return err; 3512 } 3513 3514 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3515 { 3516 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3517 struct net_device *dev = info->user_ptr[1]; 3518 3519 return cfg80211_stop_ap(rdev, dev, false); 3520 } 3521 3522 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3523 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3524 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3525 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3526 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3527 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3528 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3529 }; 3530 3531 static int parse_station_flags(struct genl_info *info, 3532 enum nl80211_iftype iftype, 3533 struct station_parameters *params) 3534 { 3535 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3536 struct nlattr *nla; 3537 int flag; 3538 3539 /* 3540 * Try parsing the new attribute first so userspace 3541 * can specify both for older kernels. 3542 */ 3543 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3544 if (nla) { 3545 struct nl80211_sta_flag_update *sta_flags; 3546 3547 sta_flags = nla_data(nla); 3548 params->sta_flags_mask = sta_flags->mask; 3549 params->sta_flags_set = sta_flags->set; 3550 params->sta_flags_set &= params->sta_flags_mask; 3551 if ((params->sta_flags_mask | 3552 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3553 return -EINVAL; 3554 return 0; 3555 } 3556 3557 /* if present, parse the old attribute */ 3558 3559 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3560 if (!nla) 3561 return 0; 3562 3563 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3564 nla, sta_flags_policy)) 3565 return -EINVAL; 3566 3567 /* 3568 * Only allow certain flags for interface types so that 3569 * other attributes are silently ignored. Remember that 3570 * this is backward compatibility code with old userspace 3571 * and shouldn't be hit in other cases anyway. 3572 */ 3573 switch (iftype) { 3574 case NL80211_IFTYPE_AP: 3575 case NL80211_IFTYPE_AP_VLAN: 3576 case NL80211_IFTYPE_P2P_GO: 3577 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3578 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3579 BIT(NL80211_STA_FLAG_WME) | 3580 BIT(NL80211_STA_FLAG_MFP); 3581 break; 3582 case NL80211_IFTYPE_P2P_CLIENT: 3583 case NL80211_IFTYPE_STATION: 3584 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3585 BIT(NL80211_STA_FLAG_TDLS_PEER); 3586 break; 3587 case NL80211_IFTYPE_MESH_POINT: 3588 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3589 BIT(NL80211_STA_FLAG_MFP) | 3590 BIT(NL80211_STA_FLAG_AUTHORIZED); 3591 default: 3592 return -EINVAL; 3593 } 3594 3595 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3596 if (flags[flag]) { 3597 params->sta_flags_set |= (1<<flag); 3598 3599 /* no longer support new API additions in old API */ 3600 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3601 return -EINVAL; 3602 } 3603 } 3604 3605 return 0; 3606 } 3607 3608 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3609 int attr) 3610 { 3611 struct nlattr *rate; 3612 u32 bitrate; 3613 u16 bitrate_compat; 3614 enum nl80211_attrs rate_flg; 3615 3616 rate = nla_nest_start(msg, attr); 3617 if (!rate) 3618 return false; 3619 3620 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3621 bitrate = cfg80211_calculate_bitrate(info); 3622 /* report 16-bit bitrate only if we can */ 3623 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3624 if (bitrate > 0 && 3625 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3626 return false; 3627 if (bitrate_compat > 0 && 3628 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3629 return false; 3630 3631 switch (info->bw) { 3632 case RATE_INFO_BW_5: 3633 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 3634 break; 3635 case RATE_INFO_BW_10: 3636 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 3637 break; 3638 default: 3639 WARN_ON(1); 3640 /* fall through */ 3641 case RATE_INFO_BW_20: 3642 rate_flg = 0; 3643 break; 3644 case RATE_INFO_BW_40: 3645 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 3646 break; 3647 case RATE_INFO_BW_80: 3648 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 3649 break; 3650 case RATE_INFO_BW_160: 3651 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 3652 break; 3653 } 3654 3655 if (rate_flg && nla_put_flag(msg, rate_flg)) 3656 return false; 3657 3658 if (info->flags & RATE_INFO_FLAGS_MCS) { 3659 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3660 return false; 3661 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3662 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3663 return false; 3664 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3665 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3666 return false; 3667 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3668 return false; 3669 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3670 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3671 return false; 3672 } 3673 3674 nla_nest_end(msg, rate); 3675 return true; 3676 } 3677 3678 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3679 int id) 3680 { 3681 void *attr; 3682 int i = 0; 3683 3684 if (!mask) 3685 return true; 3686 3687 attr = nla_nest_start(msg, id); 3688 if (!attr) 3689 return false; 3690 3691 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3692 if (!(mask & BIT(i))) 3693 continue; 3694 3695 if (nla_put_u8(msg, i, signal[i])) 3696 return false; 3697 } 3698 3699 nla_nest_end(msg, attr); 3700 3701 return true; 3702 } 3703 3704 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 3705 u32 seq, int flags, 3706 struct cfg80211_registered_device *rdev, 3707 struct net_device *dev, 3708 const u8 *mac_addr, struct station_info *sinfo) 3709 { 3710 void *hdr; 3711 struct nlattr *sinfoattr, *bss_param; 3712 3713 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3714 if (!hdr) 3715 return -1; 3716 3717 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3718 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3719 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3720 goto nla_put_failure; 3721 3722 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3723 if (!sinfoattr) 3724 goto nla_put_failure; 3725 3726 #define PUT_SINFO(attr, memb, type) do { \ 3727 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \ 3728 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 3729 sinfo->memb)) \ 3730 goto nla_put_failure; \ 3731 } while (0) 3732 3733 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 3734 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 3735 3736 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 3737 BIT(NL80211_STA_INFO_RX_BYTES64)) && 3738 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3739 (u32)sinfo->rx_bytes)) 3740 goto nla_put_failure; 3741 3742 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 3743 BIT(NL80211_STA_INFO_TX_BYTES64)) && 3744 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3745 (u32)sinfo->tx_bytes)) 3746 goto nla_put_failure; 3747 3748 PUT_SINFO(RX_BYTES64, rx_bytes, u64); 3749 PUT_SINFO(TX_BYTES64, tx_bytes, u64); 3750 PUT_SINFO(LLID, llid, u16); 3751 PUT_SINFO(PLID, plid, u16); 3752 PUT_SINFO(PLINK_STATE, plink_state, u8); 3753 3754 switch (rdev->wiphy.signal_type) { 3755 case CFG80211_SIGNAL_TYPE_MBM: 3756 PUT_SINFO(SIGNAL, signal, u8); 3757 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 3758 break; 3759 default: 3760 break; 3761 } 3762 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 3763 if (!nl80211_put_signal(msg, sinfo->chains, 3764 sinfo->chain_signal, 3765 NL80211_STA_INFO_CHAIN_SIGNAL)) 3766 goto nla_put_failure; 3767 } 3768 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 3769 if (!nl80211_put_signal(msg, sinfo->chains, 3770 sinfo->chain_signal_avg, 3771 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3772 goto nla_put_failure; 3773 } 3774 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 3775 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3776 NL80211_STA_INFO_TX_BITRATE)) 3777 goto nla_put_failure; 3778 } 3779 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 3780 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3781 NL80211_STA_INFO_RX_BITRATE)) 3782 goto nla_put_failure; 3783 } 3784 3785 PUT_SINFO(RX_PACKETS, rx_packets, u32); 3786 PUT_SINFO(TX_PACKETS, tx_packets, u32); 3787 PUT_SINFO(TX_RETRIES, tx_retries, u32); 3788 PUT_SINFO(TX_FAILED, tx_failed, u32); 3789 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 3790 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 3791 PUT_SINFO(LOCAL_PM, local_pm, u32); 3792 PUT_SINFO(PEER_PM, peer_pm, u32); 3793 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 3794 3795 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 3796 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3797 if (!bss_param) 3798 goto nla_put_failure; 3799 3800 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3801 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3802 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3803 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3804 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3805 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3806 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3807 sinfo->bss_param.dtim_period) || 3808 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3809 sinfo->bss_param.beacon_interval)) 3810 goto nla_put_failure; 3811 3812 nla_nest_end(msg, bss_param); 3813 } 3814 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 3815 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3816 sizeof(struct nl80211_sta_flag_update), 3817 &sinfo->sta_flags)) 3818 goto nla_put_failure; 3819 3820 PUT_SINFO(T_OFFSET, t_offset, u64); 3821 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64); 3822 PUT_SINFO(BEACON_RX, rx_beacon, u64); 3823 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 3824 3825 #undef PUT_SINFO 3826 3827 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 3828 struct nlattr *tidsattr; 3829 int tid; 3830 3831 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 3832 if (!tidsattr) 3833 goto nla_put_failure; 3834 3835 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 3836 struct cfg80211_tid_stats *tidstats; 3837 struct nlattr *tidattr; 3838 3839 tidstats = &sinfo->pertid[tid]; 3840 3841 if (!tidstats->filled) 3842 continue; 3843 3844 tidattr = nla_nest_start(msg, tid + 1); 3845 if (!tidattr) 3846 goto nla_put_failure; 3847 3848 #define PUT_TIDVAL(attr, memb, type) do { \ 3849 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 3850 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \ 3851 tidstats->memb)) \ 3852 goto nla_put_failure; \ 3853 } while (0) 3854 3855 PUT_TIDVAL(RX_MSDU, rx_msdu, u64); 3856 PUT_TIDVAL(TX_MSDU, tx_msdu, u64); 3857 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64); 3858 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64); 3859 3860 #undef PUT_TIDVAL 3861 nla_nest_end(msg, tidattr); 3862 } 3863 3864 nla_nest_end(msg, tidsattr); 3865 } 3866 3867 nla_nest_end(msg, sinfoattr); 3868 3869 if (sinfo->assoc_req_ies_len && 3870 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3871 sinfo->assoc_req_ies)) 3872 goto nla_put_failure; 3873 3874 genlmsg_end(msg, hdr); 3875 return 0; 3876 3877 nla_put_failure: 3878 genlmsg_cancel(msg, hdr); 3879 return -EMSGSIZE; 3880 } 3881 3882 static int nl80211_dump_station(struct sk_buff *skb, 3883 struct netlink_callback *cb) 3884 { 3885 struct station_info sinfo; 3886 struct cfg80211_registered_device *rdev; 3887 struct wireless_dev *wdev; 3888 u8 mac_addr[ETH_ALEN]; 3889 int sta_idx = cb->args[2]; 3890 int err; 3891 3892 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 3893 if (err) 3894 return err; 3895 3896 if (!wdev->netdev) { 3897 err = -EINVAL; 3898 goto out_err; 3899 } 3900 3901 if (!rdev->ops->dump_station) { 3902 err = -EOPNOTSUPP; 3903 goto out_err; 3904 } 3905 3906 while (1) { 3907 memset(&sinfo, 0, sizeof(sinfo)); 3908 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 3909 mac_addr, &sinfo); 3910 if (err == -ENOENT) 3911 break; 3912 if (err) 3913 goto out_err; 3914 3915 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 3916 NETLINK_CB(cb->skb).portid, 3917 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3918 rdev, wdev->netdev, mac_addr, 3919 &sinfo) < 0) 3920 goto out; 3921 3922 sta_idx++; 3923 } 3924 3925 3926 out: 3927 cb->args[2] = sta_idx; 3928 err = skb->len; 3929 out_err: 3930 nl80211_finish_wdev_dump(rdev); 3931 3932 return err; 3933 } 3934 3935 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3936 { 3937 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3938 struct net_device *dev = info->user_ptr[1]; 3939 struct station_info sinfo; 3940 struct sk_buff *msg; 3941 u8 *mac_addr = NULL; 3942 int err; 3943 3944 memset(&sinfo, 0, sizeof(sinfo)); 3945 3946 if (!info->attrs[NL80211_ATTR_MAC]) 3947 return -EINVAL; 3948 3949 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3950 3951 if (!rdev->ops->get_station) 3952 return -EOPNOTSUPP; 3953 3954 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3955 if (err) 3956 return err; 3957 3958 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3959 if (!msg) 3960 return -ENOMEM; 3961 3962 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 3963 info->snd_portid, info->snd_seq, 0, 3964 rdev, dev, mac_addr, &sinfo) < 0) { 3965 nlmsg_free(msg); 3966 return -ENOBUFS; 3967 } 3968 3969 return genlmsg_reply(msg, info); 3970 } 3971 3972 int cfg80211_check_station_change(struct wiphy *wiphy, 3973 struct station_parameters *params, 3974 enum cfg80211_station_type statype) 3975 { 3976 if (params->listen_interval != -1 && 3977 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 3978 return -EINVAL; 3979 3980 if (params->aid && 3981 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 3982 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 3983 return -EINVAL; 3984 3985 /* When you run into this, adjust the code below for the new flag */ 3986 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3987 3988 switch (statype) { 3989 case CFG80211_STA_MESH_PEER_KERNEL: 3990 case CFG80211_STA_MESH_PEER_USER: 3991 /* 3992 * No ignoring the TDLS flag here -- the userspace mesh 3993 * code doesn't have the bug of including TDLS in the 3994 * mask everywhere. 3995 */ 3996 if (params->sta_flags_mask & 3997 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3998 BIT(NL80211_STA_FLAG_MFP) | 3999 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4000 return -EINVAL; 4001 break; 4002 case CFG80211_STA_TDLS_PEER_SETUP: 4003 case CFG80211_STA_TDLS_PEER_ACTIVE: 4004 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4005 return -EINVAL; 4006 /* ignore since it can't change */ 4007 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4008 break; 4009 default: 4010 /* disallow mesh-specific things */ 4011 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4012 return -EINVAL; 4013 if (params->local_pm) 4014 return -EINVAL; 4015 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4016 return -EINVAL; 4017 } 4018 4019 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4020 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4021 /* TDLS can't be set, ... */ 4022 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4023 return -EINVAL; 4024 /* 4025 * ... but don't bother the driver with it. This works around 4026 * a hostapd/wpa_supplicant issue -- it always includes the 4027 * TLDS_PEER flag in the mask even for AP mode. 4028 */ 4029 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4030 } 4031 4032 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4033 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4034 /* reject other things that can't change */ 4035 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4036 return -EINVAL; 4037 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4038 return -EINVAL; 4039 if (params->supported_rates) 4040 return -EINVAL; 4041 if (params->ext_capab || params->ht_capa || params->vht_capa) 4042 return -EINVAL; 4043 } 4044 4045 if (statype != CFG80211_STA_AP_CLIENT && 4046 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4047 if (params->vlan) 4048 return -EINVAL; 4049 } 4050 4051 switch (statype) { 4052 case CFG80211_STA_AP_MLME_CLIENT: 4053 /* Use this only for authorizing/unauthorizing a station */ 4054 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4055 return -EOPNOTSUPP; 4056 break; 4057 case CFG80211_STA_AP_CLIENT: 4058 case CFG80211_STA_AP_CLIENT_UNASSOC: 4059 /* accept only the listed bits */ 4060 if (params->sta_flags_mask & 4061 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4062 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4063 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4064 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4065 BIT(NL80211_STA_FLAG_WME) | 4066 BIT(NL80211_STA_FLAG_MFP))) 4067 return -EINVAL; 4068 4069 /* but authenticated/associated only if driver handles it */ 4070 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4071 params->sta_flags_mask & 4072 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4073 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4074 return -EINVAL; 4075 break; 4076 case CFG80211_STA_IBSS: 4077 case CFG80211_STA_AP_STA: 4078 /* reject any changes other than AUTHORIZED */ 4079 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4080 return -EINVAL; 4081 break; 4082 case CFG80211_STA_TDLS_PEER_SETUP: 4083 /* reject any changes other than AUTHORIZED or WME */ 4084 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4085 BIT(NL80211_STA_FLAG_WME))) 4086 return -EINVAL; 4087 /* force (at least) rates when authorizing */ 4088 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4089 !params->supported_rates) 4090 return -EINVAL; 4091 break; 4092 case CFG80211_STA_TDLS_PEER_ACTIVE: 4093 /* reject any changes */ 4094 return -EINVAL; 4095 case CFG80211_STA_MESH_PEER_KERNEL: 4096 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4097 return -EINVAL; 4098 break; 4099 case CFG80211_STA_MESH_PEER_USER: 4100 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 4101 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 4102 return -EINVAL; 4103 break; 4104 } 4105 4106 return 0; 4107 } 4108 EXPORT_SYMBOL(cfg80211_check_station_change); 4109 4110 /* 4111 * Get vlan interface making sure it is running and on the right wiphy. 4112 */ 4113 static struct net_device *get_vlan(struct genl_info *info, 4114 struct cfg80211_registered_device *rdev) 4115 { 4116 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4117 struct net_device *v; 4118 int ret; 4119 4120 if (!vlanattr) 4121 return NULL; 4122 4123 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4124 if (!v) 4125 return ERR_PTR(-ENODEV); 4126 4127 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4128 ret = -EINVAL; 4129 goto error; 4130 } 4131 4132 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4133 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4134 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4135 ret = -EINVAL; 4136 goto error; 4137 } 4138 4139 if (!netif_running(v)) { 4140 ret = -ENETDOWN; 4141 goto error; 4142 } 4143 4144 return v; 4145 error: 4146 dev_put(v); 4147 return ERR_PTR(ret); 4148 } 4149 4150 static const struct nla_policy 4151 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4152 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4153 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4154 }; 4155 4156 static int nl80211_parse_sta_wme(struct genl_info *info, 4157 struct station_parameters *params) 4158 { 4159 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4160 struct nlattr *nla; 4161 int err; 4162 4163 /* parse WME attributes if present */ 4164 if (!info->attrs[NL80211_ATTR_STA_WME]) 4165 return 0; 4166 4167 nla = info->attrs[NL80211_ATTR_STA_WME]; 4168 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4169 nl80211_sta_wme_policy); 4170 if (err) 4171 return err; 4172 4173 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4174 params->uapsd_queues = nla_get_u8( 4175 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4176 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4177 return -EINVAL; 4178 4179 if (tb[NL80211_STA_WME_MAX_SP]) 4180 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4181 4182 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4183 return -EINVAL; 4184 4185 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4186 4187 return 0; 4188 } 4189 4190 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4191 struct station_parameters *params) 4192 { 4193 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4194 params->supported_channels = 4195 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4196 params->supported_channels_len = 4197 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4198 /* 4199 * Need to include at least one (first channel, number of 4200 * channels) tuple for each subband, and must have proper 4201 * tuples for the rest of the data as well. 4202 */ 4203 if (params->supported_channels_len < 2) 4204 return -EINVAL; 4205 if (params->supported_channels_len % 2) 4206 return -EINVAL; 4207 } 4208 4209 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4210 params->supported_oper_classes = 4211 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4212 params->supported_oper_classes_len = 4213 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4214 /* 4215 * The value of the Length field of the Supported Operating 4216 * Classes element is between 2 and 253. 4217 */ 4218 if (params->supported_oper_classes_len < 2 || 4219 params->supported_oper_classes_len > 253) 4220 return -EINVAL; 4221 } 4222 return 0; 4223 } 4224 4225 static int nl80211_set_station_tdls(struct genl_info *info, 4226 struct station_parameters *params) 4227 { 4228 int err; 4229 /* Dummy STA entry gets updated once the peer capabilities are known */ 4230 if (info->attrs[NL80211_ATTR_PEER_AID]) 4231 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4232 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4233 params->ht_capa = 4234 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4235 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4236 params->vht_capa = 4237 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4238 4239 err = nl80211_parse_sta_channel_info(info, params); 4240 if (err) 4241 return err; 4242 4243 return nl80211_parse_sta_wme(info, params); 4244 } 4245 4246 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4247 { 4248 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4249 struct net_device *dev = info->user_ptr[1]; 4250 struct station_parameters params; 4251 u8 *mac_addr; 4252 int err; 4253 4254 memset(¶ms, 0, sizeof(params)); 4255 4256 if (!rdev->ops->change_station) 4257 return -EOPNOTSUPP; 4258 4259 /* 4260 * AID and listen_interval properties can be set only for unassociated 4261 * station. Include these parameters here and will check them in 4262 * cfg80211_check_station_change(). 4263 */ 4264 if (info->attrs[NL80211_ATTR_STA_AID]) 4265 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4266 4267 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4268 params.listen_interval = 4269 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4270 else 4271 params.listen_interval = -1; 4272 4273 if (!info->attrs[NL80211_ATTR_MAC]) 4274 return -EINVAL; 4275 4276 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4277 4278 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4279 params.supported_rates = 4280 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4281 params.supported_rates_len = 4282 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4283 } 4284 4285 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4286 params.capability = 4287 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4288 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4289 } 4290 4291 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4292 params.ext_capab = 4293 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4294 params.ext_capab_len = 4295 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4296 } 4297 4298 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4299 return -EINVAL; 4300 4301 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4302 params.plink_action = 4303 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4304 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4305 return -EINVAL; 4306 } 4307 4308 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4309 params.plink_state = 4310 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4311 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4312 return -EINVAL; 4313 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4314 } 4315 4316 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4317 enum nl80211_mesh_power_mode pm = nla_get_u32( 4318 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4319 4320 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4321 pm > NL80211_MESH_POWER_MAX) 4322 return -EINVAL; 4323 4324 params.local_pm = pm; 4325 } 4326 4327 /* Include parameters for TDLS peer (will check later) */ 4328 err = nl80211_set_station_tdls(info, ¶ms); 4329 if (err) 4330 return err; 4331 4332 params.vlan = get_vlan(info, rdev); 4333 if (IS_ERR(params.vlan)) 4334 return PTR_ERR(params.vlan); 4335 4336 switch (dev->ieee80211_ptr->iftype) { 4337 case NL80211_IFTYPE_AP: 4338 case NL80211_IFTYPE_AP_VLAN: 4339 case NL80211_IFTYPE_P2P_GO: 4340 case NL80211_IFTYPE_P2P_CLIENT: 4341 case NL80211_IFTYPE_STATION: 4342 case NL80211_IFTYPE_ADHOC: 4343 case NL80211_IFTYPE_MESH_POINT: 4344 break; 4345 default: 4346 err = -EOPNOTSUPP; 4347 goto out_put_vlan; 4348 } 4349 4350 /* driver will call cfg80211_check_station_change() */ 4351 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4352 4353 out_put_vlan: 4354 if (params.vlan) 4355 dev_put(params.vlan); 4356 4357 return err; 4358 } 4359 4360 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4361 { 4362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4363 int err; 4364 struct net_device *dev = info->user_ptr[1]; 4365 struct station_parameters params; 4366 u8 *mac_addr = NULL; 4367 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4368 BIT(NL80211_STA_FLAG_ASSOCIATED); 4369 4370 memset(¶ms, 0, sizeof(params)); 4371 4372 if (!rdev->ops->add_station) 4373 return -EOPNOTSUPP; 4374 4375 if (!info->attrs[NL80211_ATTR_MAC]) 4376 return -EINVAL; 4377 4378 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4379 return -EINVAL; 4380 4381 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4382 return -EINVAL; 4383 4384 if (!info->attrs[NL80211_ATTR_STA_AID] && 4385 !info->attrs[NL80211_ATTR_PEER_AID]) 4386 return -EINVAL; 4387 4388 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4389 params.supported_rates = 4390 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4391 params.supported_rates_len = 4392 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4393 params.listen_interval = 4394 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4395 4396 if (info->attrs[NL80211_ATTR_PEER_AID]) 4397 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4398 else 4399 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4400 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4401 return -EINVAL; 4402 4403 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4404 params.capability = 4405 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4406 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4407 } 4408 4409 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4410 params.ext_capab = 4411 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4412 params.ext_capab_len = 4413 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4414 } 4415 4416 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4417 params.ht_capa = 4418 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4419 4420 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4421 params.vht_capa = 4422 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4423 4424 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4425 params.opmode_notif_used = true; 4426 params.opmode_notif = 4427 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4428 } 4429 4430 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4431 params.plink_action = 4432 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4433 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4434 return -EINVAL; 4435 } 4436 4437 err = nl80211_parse_sta_channel_info(info, ¶ms); 4438 if (err) 4439 return err; 4440 4441 err = nl80211_parse_sta_wme(info, ¶ms); 4442 if (err) 4443 return err; 4444 4445 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4446 return -EINVAL; 4447 4448 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 4449 * as userspace might just pass through the capabilities from the IEs 4450 * directly, rather than enforcing this restriction and returning an 4451 * error in this case. 4452 */ 4453 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 4454 params.ht_capa = NULL; 4455 params.vht_capa = NULL; 4456 } 4457 4458 /* When you run into this, adjust the code below for the new flag */ 4459 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4460 4461 switch (dev->ieee80211_ptr->iftype) { 4462 case NL80211_IFTYPE_AP: 4463 case NL80211_IFTYPE_AP_VLAN: 4464 case NL80211_IFTYPE_P2P_GO: 4465 /* ignore WME attributes if iface/sta is not capable */ 4466 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4467 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4468 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4469 4470 /* TDLS peers cannot be added */ 4471 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4472 info->attrs[NL80211_ATTR_PEER_AID]) 4473 return -EINVAL; 4474 /* but don't bother the driver with it */ 4475 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4476 4477 /* allow authenticated/associated only if driver handles it */ 4478 if (!(rdev->wiphy.features & 4479 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4480 params.sta_flags_mask & auth_assoc) 4481 return -EINVAL; 4482 4483 /* Older userspace, or userspace wanting to be compatible with 4484 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 4485 * and assoc flags in the mask, but assumes the station will be 4486 * added as associated anyway since this was the required driver 4487 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 4488 * introduced. 4489 * In order to not bother drivers with this quirk in the API 4490 * set the flags in both the mask and set for new stations in 4491 * this case. 4492 */ 4493 if (!(params.sta_flags_mask & auth_assoc)) { 4494 params.sta_flags_mask |= auth_assoc; 4495 params.sta_flags_set |= auth_assoc; 4496 } 4497 4498 /* must be last in here for error handling */ 4499 params.vlan = get_vlan(info, rdev); 4500 if (IS_ERR(params.vlan)) 4501 return PTR_ERR(params.vlan); 4502 break; 4503 case NL80211_IFTYPE_MESH_POINT: 4504 /* ignore uAPSD data */ 4505 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4506 4507 /* associated is disallowed */ 4508 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4509 return -EINVAL; 4510 /* TDLS peers cannot be added */ 4511 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4512 info->attrs[NL80211_ATTR_PEER_AID]) 4513 return -EINVAL; 4514 break; 4515 case NL80211_IFTYPE_STATION: 4516 case NL80211_IFTYPE_P2P_CLIENT: 4517 /* ignore uAPSD data */ 4518 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4519 4520 /* these are disallowed */ 4521 if (params.sta_flags_mask & 4522 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4523 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4524 return -EINVAL; 4525 /* Only TDLS peers can be added */ 4526 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4527 return -EINVAL; 4528 /* Can only add if TDLS ... */ 4529 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4530 return -EOPNOTSUPP; 4531 /* ... with external setup is supported */ 4532 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4533 return -EOPNOTSUPP; 4534 /* 4535 * Older wpa_supplicant versions always mark the TDLS peer 4536 * as authorized, but it shouldn't yet be. 4537 */ 4538 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4539 break; 4540 default: 4541 return -EOPNOTSUPP; 4542 } 4543 4544 /* be aware of params.vlan when changing code here */ 4545 4546 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4547 4548 if (params.vlan) 4549 dev_put(params.vlan); 4550 return err; 4551 } 4552 4553 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4554 { 4555 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4556 struct net_device *dev = info->user_ptr[1]; 4557 struct station_del_parameters params; 4558 4559 memset(¶ms, 0, sizeof(params)); 4560 4561 if (info->attrs[NL80211_ATTR_MAC]) 4562 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4563 4564 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4565 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4566 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4567 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4568 return -EINVAL; 4569 4570 if (!rdev->ops->del_station) 4571 return -EOPNOTSUPP; 4572 4573 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4574 params.subtype = 4575 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4576 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4577 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4578 return -EINVAL; 4579 } else { 4580 /* Default to Deauthentication frame */ 4581 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4582 } 4583 4584 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4585 params.reason_code = 4586 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4587 if (params.reason_code == 0) 4588 return -EINVAL; /* 0 is reserved */ 4589 } else { 4590 /* Default to reason code 2 */ 4591 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4592 } 4593 4594 return rdev_del_station(rdev, dev, ¶ms); 4595 } 4596 4597 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4598 int flags, struct net_device *dev, 4599 u8 *dst, u8 *next_hop, 4600 struct mpath_info *pinfo) 4601 { 4602 void *hdr; 4603 struct nlattr *pinfoattr; 4604 4605 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4606 if (!hdr) 4607 return -1; 4608 4609 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4610 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4611 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4612 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4613 goto nla_put_failure; 4614 4615 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4616 if (!pinfoattr) 4617 goto nla_put_failure; 4618 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4619 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4620 pinfo->frame_qlen)) 4621 goto nla_put_failure; 4622 if (((pinfo->filled & MPATH_INFO_SN) && 4623 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4624 ((pinfo->filled & MPATH_INFO_METRIC) && 4625 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4626 pinfo->metric)) || 4627 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4628 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4629 pinfo->exptime)) || 4630 ((pinfo->filled & MPATH_INFO_FLAGS) && 4631 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4632 pinfo->flags)) || 4633 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4634 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4635 pinfo->discovery_timeout)) || 4636 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4637 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4638 pinfo->discovery_retries))) 4639 goto nla_put_failure; 4640 4641 nla_nest_end(msg, pinfoattr); 4642 4643 genlmsg_end(msg, hdr); 4644 return 0; 4645 4646 nla_put_failure: 4647 genlmsg_cancel(msg, hdr); 4648 return -EMSGSIZE; 4649 } 4650 4651 static int nl80211_dump_mpath(struct sk_buff *skb, 4652 struct netlink_callback *cb) 4653 { 4654 struct mpath_info pinfo; 4655 struct cfg80211_registered_device *rdev; 4656 struct wireless_dev *wdev; 4657 u8 dst[ETH_ALEN]; 4658 u8 next_hop[ETH_ALEN]; 4659 int path_idx = cb->args[2]; 4660 int err; 4661 4662 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4663 if (err) 4664 return err; 4665 4666 if (!rdev->ops->dump_mpath) { 4667 err = -EOPNOTSUPP; 4668 goto out_err; 4669 } 4670 4671 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4672 err = -EOPNOTSUPP; 4673 goto out_err; 4674 } 4675 4676 while (1) { 4677 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4678 next_hop, &pinfo); 4679 if (err == -ENOENT) 4680 break; 4681 if (err) 4682 goto out_err; 4683 4684 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4685 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4686 wdev->netdev, dst, next_hop, 4687 &pinfo) < 0) 4688 goto out; 4689 4690 path_idx++; 4691 } 4692 4693 4694 out: 4695 cb->args[2] = path_idx; 4696 err = skb->len; 4697 out_err: 4698 nl80211_finish_wdev_dump(rdev); 4699 return err; 4700 } 4701 4702 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4703 { 4704 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4705 int err; 4706 struct net_device *dev = info->user_ptr[1]; 4707 struct mpath_info pinfo; 4708 struct sk_buff *msg; 4709 u8 *dst = NULL; 4710 u8 next_hop[ETH_ALEN]; 4711 4712 memset(&pinfo, 0, sizeof(pinfo)); 4713 4714 if (!info->attrs[NL80211_ATTR_MAC]) 4715 return -EINVAL; 4716 4717 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4718 4719 if (!rdev->ops->get_mpath) 4720 return -EOPNOTSUPP; 4721 4722 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4723 return -EOPNOTSUPP; 4724 4725 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4726 if (err) 4727 return err; 4728 4729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4730 if (!msg) 4731 return -ENOMEM; 4732 4733 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4734 dev, dst, next_hop, &pinfo) < 0) { 4735 nlmsg_free(msg); 4736 return -ENOBUFS; 4737 } 4738 4739 return genlmsg_reply(msg, info); 4740 } 4741 4742 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4743 { 4744 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4745 struct net_device *dev = info->user_ptr[1]; 4746 u8 *dst = NULL; 4747 u8 *next_hop = NULL; 4748 4749 if (!info->attrs[NL80211_ATTR_MAC]) 4750 return -EINVAL; 4751 4752 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4753 return -EINVAL; 4754 4755 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4756 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4757 4758 if (!rdev->ops->change_mpath) 4759 return -EOPNOTSUPP; 4760 4761 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4762 return -EOPNOTSUPP; 4763 4764 return rdev_change_mpath(rdev, dev, dst, next_hop); 4765 } 4766 4767 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4768 { 4769 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4770 struct net_device *dev = info->user_ptr[1]; 4771 u8 *dst = NULL; 4772 u8 *next_hop = NULL; 4773 4774 if (!info->attrs[NL80211_ATTR_MAC]) 4775 return -EINVAL; 4776 4777 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4778 return -EINVAL; 4779 4780 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4781 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4782 4783 if (!rdev->ops->add_mpath) 4784 return -EOPNOTSUPP; 4785 4786 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4787 return -EOPNOTSUPP; 4788 4789 return rdev_add_mpath(rdev, dev, dst, next_hop); 4790 } 4791 4792 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4793 { 4794 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4795 struct net_device *dev = info->user_ptr[1]; 4796 u8 *dst = NULL; 4797 4798 if (info->attrs[NL80211_ATTR_MAC]) 4799 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4800 4801 if (!rdev->ops->del_mpath) 4802 return -EOPNOTSUPP; 4803 4804 return rdev_del_mpath(rdev, dev, dst); 4805 } 4806 4807 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4808 { 4809 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4810 int err; 4811 struct net_device *dev = info->user_ptr[1]; 4812 struct mpath_info pinfo; 4813 struct sk_buff *msg; 4814 u8 *dst = NULL; 4815 u8 mpp[ETH_ALEN]; 4816 4817 memset(&pinfo, 0, sizeof(pinfo)); 4818 4819 if (!info->attrs[NL80211_ATTR_MAC]) 4820 return -EINVAL; 4821 4822 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4823 4824 if (!rdev->ops->get_mpp) 4825 return -EOPNOTSUPP; 4826 4827 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4828 return -EOPNOTSUPP; 4829 4830 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4831 if (err) 4832 return err; 4833 4834 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4835 if (!msg) 4836 return -ENOMEM; 4837 4838 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4839 dev, dst, mpp, &pinfo) < 0) { 4840 nlmsg_free(msg); 4841 return -ENOBUFS; 4842 } 4843 4844 return genlmsg_reply(msg, info); 4845 } 4846 4847 static int nl80211_dump_mpp(struct sk_buff *skb, 4848 struct netlink_callback *cb) 4849 { 4850 struct mpath_info pinfo; 4851 struct cfg80211_registered_device *rdev; 4852 struct wireless_dev *wdev; 4853 u8 dst[ETH_ALEN]; 4854 u8 mpp[ETH_ALEN]; 4855 int path_idx = cb->args[2]; 4856 int err; 4857 4858 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4859 if (err) 4860 return err; 4861 4862 if (!rdev->ops->dump_mpp) { 4863 err = -EOPNOTSUPP; 4864 goto out_err; 4865 } 4866 4867 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4868 err = -EOPNOTSUPP; 4869 goto out_err; 4870 } 4871 4872 while (1) { 4873 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4874 mpp, &pinfo); 4875 if (err == -ENOENT) 4876 break; 4877 if (err) 4878 goto out_err; 4879 4880 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4881 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4882 wdev->netdev, dst, mpp, 4883 &pinfo) < 0) 4884 goto out; 4885 4886 path_idx++; 4887 } 4888 4889 out: 4890 cb->args[2] = path_idx; 4891 err = skb->len; 4892 out_err: 4893 nl80211_finish_wdev_dump(rdev); 4894 return err; 4895 } 4896 4897 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4898 { 4899 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4900 struct net_device *dev = info->user_ptr[1]; 4901 struct wireless_dev *wdev = dev->ieee80211_ptr; 4902 struct bss_parameters params; 4903 int err; 4904 4905 memset(¶ms, 0, sizeof(params)); 4906 /* default to not changing parameters */ 4907 params.use_cts_prot = -1; 4908 params.use_short_preamble = -1; 4909 params.use_short_slot_time = -1; 4910 params.ap_isolate = -1; 4911 params.ht_opmode = -1; 4912 params.p2p_ctwindow = -1; 4913 params.p2p_opp_ps = -1; 4914 4915 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4916 params.use_cts_prot = 4917 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4918 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4919 params.use_short_preamble = 4920 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4921 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4922 params.use_short_slot_time = 4923 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4924 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4925 params.basic_rates = 4926 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4927 params.basic_rates_len = 4928 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4929 } 4930 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4931 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4932 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4933 params.ht_opmode = 4934 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4935 4936 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4937 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4938 return -EINVAL; 4939 params.p2p_ctwindow = 4940 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4941 if (params.p2p_ctwindow < 0) 4942 return -EINVAL; 4943 if (params.p2p_ctwindow != 0 && 4944 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4945 return -EINVAL; 4946 } 4947 4948 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4949 u8 tmp; 4950 4951 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4952 return -EINVAL; 4953 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4954 if (tmp > 1) 4955 return -EINVAL; 4956 params.p2p_opp_ps = tmp; 4957 if (params.p2p_opp_ps && 4958 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4959 return -EINVAL; 4960 } 4961 4962 if (!rdev->ops->change_bss) 4963 return -EOPNOTSUPP; 4964 4965 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4966 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4967 return -EOPNOTSUPP; 4968 4969 wdev_lock(wdev); 4970 err = rdev_change_bss(rdev, dev, ¶ms); 4971 wdev_unlock(wdev); 4972 4973 return err; 4974 } 4975 4976 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4977 { 4978 char *data = NULL; 4979 bool is_indoor; 4980 enum nl80211_user_reg_hint_type user_reg_hint_type; 4981 u32 owner_nlportid; 4982 4983 4984 /* 4985 * You should only get this when cfg80211 hasn't yet initialized 4986 * completely when built-in to the kernel right between the time 4987 * window between nl80211_init() and regulatory_init(), if that is 4988 * even possible. 4989 */ 4990 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4991 return -EINPROGRESS; 4992 4993 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4994 user_reg_hint_type = 4995 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4996 else 4997 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4998 4999 switch (user_reg_hint_type) { 5000 case NL80211_USER_REG_HINT_USER: 5001 case NL80211_USER_REG_HINT_CELL_BASE: 5002 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5003 return -EINVAL; 5004 5005 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5006 return regulatory_hint_user(data, user_reg_hint_type); 5007 case NL80211_USER_REG_HINT_INDOOR: 5008 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5009 owner_nlportid = info->snd_portid; 5010 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5011 } else { 5012 owner_nlportid = 0; 5013 is_indoor = true; 5014 } 5015 5016 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5017 default: 5018 return -EINVAL; 5019 } 5020 } 5021 5022 static int nl80211_get_mesh_config(struct sk_buff *skb, 5023 struct genl_info *info) 5024 { 5025 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5026 struct net_device *dev = info->user_ptr[1]; 5027 struct wireless_dev *wdev = dev->ieee80211_ptr; 5028 struct mesh_config cur_params; 5029 int err = 0; 5030 void *hdr; 5031 struct nlattr *pinfoattr; 5032 struct sk_buff *msg; 5033 5034 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5035 return -EOPNOTSUPP; 5036 5037 if (!rdev->ops->get_mesh_config) 5038 return -EOPNOTSUPP; 5039 5040 wdev_lock(wdev); 5041 /* If not connected, get default parameters */ 5042 if (!wdev->mesh_id_len) 5043 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5044 else 5045 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5046 wdev_unlock(wdev); 5047 5048 if (err) 5049 return err; 5050 5051 /* Draw up a netlink message to send back */ 5052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5053 if (!msg) 5054 return -ENOMEM; 5055 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5056 NL80211_CMD_GET_MESH_CONFIG); 5057 if (!hdr) 5058 goto out; 5059 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5060 if (!pinfoattr) 5061 goto nla_put_failure; 5062 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5063 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5064 cur_params.dot11MeshRetryTimeout) || 5065 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5066 cur_params.dot11MeshConfirmTimeout) || 5067 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5068 cur_params.dot11MeshHoldingTimeout) || 5069 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5070 cur_params.dot11MeshMaxPeerLinks) || 5071 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5072 cur_params.dot11MeshMaxRetries) || 5073 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5074 cur_params.dot11MeshTTL) || 5075 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5076 cur_params.element_ttl) || 5077 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5078 cur_params.auto_open_plinks) || 5079 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5080 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5081 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5082 cur_params.dot11MeshHWMPmaxPREQretries) || 5083 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5084 cur_params.path_refresh_time) || 5085 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5086 cur_params.min_discovery_timeout) || 5087 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5088 cur_params.dot11MeshHWMPactivePathTimeout) || 5089 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5090 cur_params.dot11MeshHWMPpreqMinInterval) || 5091 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5092 cur_params.dot11MeshHWMPperrMinInterval) || 5093 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5094 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5095 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5096 cur_params.dot11MeshHWMPRootMode) || 5097 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5098 cur_params.dot11MeshHWMPRannInterval) || 5099 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5100 cur_params.dot11MeshGateAnnouncementProtocol) || 5101 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5102 cur_params.dot11MeshForwarding) || 5103 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5104 cur_params.rssi_threshold) || 5105 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5106 cur_params.ht_opmode) || 5107 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5108 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5109 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5110 cur_params.dot11MeshHWMProotInterval) || 5111 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5112 cur_params.dot11MeshHWMPconfirmationInterval) || 5113 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5114 cur_params.power_mode) || 5115 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5116 cur_params.dot11MeshAwakeWindowDuration) || 5117 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5118 cur_params.plink_timeout)) 5119 goto nla_put_failure; 5120 nla_nest_end(msg, pinfoattr); 5121 genlmsg_end(msg, hdr); 5122 return genlmsg_reply(msg, info); 5123 5124 nla_put_failure: 5125 genlmsg_cancel(msg, hdr); 5126 out: 5127 nlmsg_free(msg); 5128 return -ENOBUFS; 5129 } 5130 5131 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5132 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5133 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5134 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5135 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5136 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5137 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5138 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5139 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5140 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5141 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5142 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5143 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5144 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5145 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5146 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5147 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5148 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5149 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5150 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5151 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5152 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5153 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5154 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5155 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5156 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5157 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5158 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5159 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5160 }; 5161 5162 static const struct nla_policy 5163 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5164 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5165 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5166 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5167 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5168 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5169 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5170 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5171 .len = IEEE80211_MAX_DATA_LEN }, 5172 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5173 }; 5174 5175 static int nl80211_parse_mesh_config(struct genl_info *info, 5176 struct mesh_config *cfg, 5177 u32 *mask_out) 5178 { 5179 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5180 u32 mask = 0; 5181 5182 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5183 do { \ 5184 if (tb[attr]) { \ 5185 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5186 return -EINVAL; \ 5187 cfg->param = fn(tb[attr]); \ 5188 mask |= (1 << (attr - 1)); \ 5189 } \ 5190 } while (0) 5191 5192 5193 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5194 return -EINVAL; 5195 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5196 info->attrs[NL80211_ATTR_MESH_CONFIG], 5197 nl80211_meshconf_params_policy)) 5198 return -EINVAL; 5199 5200 /* This makes sure that there aren't more than 32 mesh config 5201 * parameters (otherwise our bitfield scheme would not work.) */ 5202 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5203 5204 /* Fill in the params struct */ 5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5206 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5207 nla_get_u16); 5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5209 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5210 nla_get_u16); 5211 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5212 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5213 nla_get_u16); 5214 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5215 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5216 nla_get_u16); 5217 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5218 mask, NL80211_MESHCONF_MAX_RETRIES, 5219 nla_get_u8); 5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5221 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5222 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5223 mask, NL80211_MESHCONF_ELEMENT_TTL, 5224 nla_get_u8); 5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5226 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5227 nla_get_u8); 5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5229 1, 255, mask, 5230 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5231 nla_get_u32); 5232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5233 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5234 nla_get_u8); 5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5236 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5237 nla_get_u32); 5238 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5239 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5240 nla_get_u16); 5241 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5242 1, 65535, mask, 5243 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5244 nla_get_u32); 5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5246 1, 65535, mask, 5247 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5248 nla_get_u16); 5249 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5250 1, 65535, mask, 5251 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5252 nla_get_u16); 5253 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5254 dot11MeshHWMPnetDiameterTraversalTime, 5255 1, 65535, mask, 5256 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5257 nla_get_u16); 5258 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5259 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5260 nla_get_u8); 5261 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5262 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5263 nla_get_u16); 5264 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5265 dot11MeshGateAnnouncementProtocol, 0, 1, 5266 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5267 nla_get_u8); 5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5269 mask, NL80211_MESHCONF_FORWARDING, 5270 nla_get_u8); 5271 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5272 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5273 nla_get_s32); 5274 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5275 mask, NL80211_MESHCONF_HT_OPMODE, 5276 nla_get_u16); 5277 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5278 1, 65535, mask, 5279 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5280 nla_get_u32); 5281 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5282 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5283 nla_get_u16); 5284 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5285 dot11MeshHWMPconfirmationInterval, 5286 1, 65535, mask, 5287 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5288 nla_get_u16); 5289 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5290 NL80211_MESH_POWER_ACTIVE, 5291 NL80211_MESH_POWER_MAX, 5292 mask, NL80211_MESHCONF_POWER_MODE, 5293 nla_get_u32); 5294 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5295 0, 65535, mask, 5296 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5297 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 5298 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5299 nla_get_u32); 5300 if (mask_out) 5301 *mask_out = mask; 5302 5303 return 0; 5304 5305 #undef FILL_IN_MESH_PARAM_IF_SET 5306 } 5307 5308 static int nl80211_parse_mesh_setup(struct genl_info *info, 5309 struct mesh_setup *setup) 5310 { 5311 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5312 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5313 5314 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5315 return -EINVAL; 5316 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5317 info->attrs[NL80211_ATTR_MESH_SETUP], 5318 nl80211_mesh_setup_params_policy)) 5319 return -EINVAL; 5320 5321 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5322 setup->sync_method = 5323 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5324 IEEE80211_SYNC_METHOD_VENDOR : 5325 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5326 5327 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5328 setup->path_sel_proto = 5329 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5330 IEEE80211_PATH_PROTOCOL_VENDOR : 5331 IEEE80211_PATH_PROTOCOL_HWMP; 5332 5333 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5334 setup->path_metric = 5335 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5336 IEEE80211_PATH_METRIC_VENDOR : 5337 IEEE80211_PATH_METRIC_AIRTIME; 5338 5339 5340 if (tb[NL80211_MESH_SETUP_IE]) { 5341 struct nlattr *ieattr = 5342 tb[NL80211_MESH_SETUP_IE]; 5343 if (!is_valid_ie_attr(ieattr)) 5344 return -EINVAL; 5345 setup->ie = nla_data(ieattr); 5346 setup->ie_len = nla_len(ieattr); 5347 } 5348 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5349 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5350 return -EINVAL; 5351 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5352 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5353 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5354 if (setup->is_secure) 5355 setup->user_mpm = true; 5356 5357 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5358 if (!setup->user_mpm) 5359 return -EINVAL; 5360 setup->auth_id = 5361 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5362 } 5363 5364 return 0; 5365 } 5366 5367 static int nl80211_update_mesh_config(struct sk_buff *skb, 5368 struct genl_info *info) 5369 { 5370 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5371 struct net_device *dev = info->user_ptr[1]; 5372 struct wireless_dev *wdev = dev->ieee80211_ptr; 5373 struct mesh_config cfg; 5374 u32 mask; 5375 int err; 5376 5377 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5378 return -EOPNOTSUPP; 5379 5380 if (!rdev->ops->update_mesh_config) 5381 return -EOPNOTSUPP; 5382 5383 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5384 if (err) 5385 return err; 5386 5387 wdev_lock(wdev); 5388 if (!wdev->mesh_id_len) 5389 err = -ENOLINK; 5390 5391 if (!err) 5392 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5393 5394 wdev_unlock(wdev); 5395 5396 return err; 5397 } 5398 5399 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5400 struct sk_buff *msg) 5401 { 5402 struct nlattr *nl_reg_rules; 5403 unsigned int i; 5404 5405 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5406 (regdom->dfs_region && 5407 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5408 goto nla_put_failure; 5409 5410 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5411 if (!nl_reg_rules) 5412 goto nla_put_failure; 5413 5414 for (i = 0; i < regdom->n_reg_rules; i++) { 5415 struct nlattr *nl_reg_rule; 5416 const struct ieee80211_reg_rule *reg_rule; 5417 const struct ieee80211_freq_range *freq_range; 5418 const struct ieee80211_power_rule *power_rule; 5419 unsigned int max_bandwidth_khz; 5420 5421 reg_rule = ®dom->reg_rules[i]; 5422 freq_range = ®_rule->freq_range; 5423 power_rule = ®_rule->power_rule; 5424 5425 nl_reg_rule = nla_nest_start(msg, i); 5426 if (!nl_reg_rule) 5427 goto nla_put_failure; 5428 5429 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5430 if (!max_bandwidth_khz) 5431 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5432 reg_rule); 5433 5434 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5435 reg_rule->flags) || 5436 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5437 freq_range->start_freq_khz) || 5438 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5439 freq_range->end_freq_khz) || 5440 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5441 max_bandwidth_khz) || 5442 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5443 power_rule->max_antenna_gain) || 5444 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5445 power_rule->max_eirp) || 5446 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5447 reg_rule->dfs_cac_ms)) 5448 goto nla_put_failure; 5449 5450 nla_nest_end(msg, nl_reg_rule); 5451 } 5452 5453 nla_nest_end(msg, nl_reg_rules); 5454 return 0; 5455 5456 nla_put_failure: 5457 return -EMSGSIZE; 5458 } 5459 5460 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5461 { 5462 const struct ieee80211_regdomain *regdom = NULL; 5463 struct cfg80211_registered_device *rdev; 5464 struct wiphy *wiphy = NULL; 5465 struct sk_buff *msg; 5466 void *hdr; 5467 5468 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5469 if (!msg) 5470 return -ENOBUFS; 5471 5472 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5473 NL80211_CMD_GET_REG); 5474 if (!hdr) 5475 goto put_failure; 5476 5477 if (info->attrs[NL80211_ATTR_WIPHY]) { 5478 bool self_managed; 5479 5480 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5481 if (IS_ERR(rdev)) { 5482 nlmsg_free(msg); 5483 return PTR_ERR(rdev); 5484 } 5485 5486 wiphy = &rdev->wiphy; 5487 self_managed = wiphy->regulatory_flags & 5488 REGULATORY_WIPHY_SELF_MANAGED; 5489 regdom = get_wiphy_regdom(wiphy); 5490 5491 /* a self-managed-reg device must have a private regdom */ 5492 if (WARN_ON(!regdom && self_managed)) { 5493 nlmsg_free(msg); 5494 return -EINVAL; 5495 } 5496 5497 if (regdom && 5498 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5499 goto nla_put_failure; 5500 } 5501 5502 if (!wiphy && reg_last_request_cell_base() && 5503 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5504 NL80211_USER_REG_HINT_CELL_BASE)) 5505 goto nla_put_failure; 5506 5507 rcu_read_lock(); 5508 5509 if (!regdom) 5510 regdom = rcu_dereference(cfg80211_regdomain); 5511 5512 if (nl80211_put_regdom(regdom, msg)) 5513 goto nla_put_failure_rcu; 5514 5515 rcu_read_unlock(); 5516 5517 genlmsg_end(msg, hdr); 5518 return genlmsg_reply(msg, info); 5519 5520 nla_put_failure_rcu: 5521 rcu_read_unlock(); 5522 nla_put_failure: 5523 genlmsg_cancel(msg, hdr); 5524 put_failure: 5525 nlmsg_free(msg); 5526 return -EMSGSIZE; 5527 } 5528 5529 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5530 u32 seq, int flags, struct wiphy *wiphy, 5531 const struct ieee80211_regdomain *regdom) 5532 { 5533 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5534 NL80211_CMD_GET_REG); 5535 5536 if (!hdr) 5537 return -1; 5538 5539 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5540 5541 if (nl80211_put_regdom(regdom, msg)) 5542 goto nla_put_failure; 5543 5544 if (!wiphy && reg_last_request_cell_base() && 5545 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5546 NL80211_USER_REG_HINT_CELL_BASE)) 5547 goto nla_put_failure; 5548 5549 if (wiphy && 5550 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5551 goto nla_put_failure; 5552 5553 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5554 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5555 goto nla_put_failure; 5556 5557 genlmsg_end(msg, hdr); 5558 return 0; 5559 5560 nla_put_failure: 5561 genlmsg_cancel(msg, hdr); 5562 return -EMSGSIZE; 5563 } 5564 5565 static int nl80211_get_reg_dump(struct sk_buff *skb, 5566 struct netlink_callback *cb) 5567 { 5568 const struct ieee80211_regdomain *regdom = NULL; 5569 struct cfg80211_registered_device *rdev; 5570 int err, reg_idx, start = cb->args[2]; 5571 5572 rtnl_lock(); 5573 5574 if (cfg80211_regdomain && start == 0) { 5575 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5576 NLM_F_MULTI, NULL, 5577 rtnl_dereference(cfg80211_regdomain)); 5578 if (err < 0) 5579 goto out_err; 5580 } 5581 5582 /* the global regdom is idx 0 */ 5583 reg_idx = 1; 5584 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5585 regdom = get_wiphy_regdom(&rdev->wiphy); 5586 if (!regdom) 5587 continue; 5588 5589 if (++reg_idx <= start) 5590 continue; 5591 5592 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5593 NLM_F_MULTI, &rdev->wiphy, regdom); 5594 if (err < 0) { 5595 reg_idx--; 5596 break; 5597 } 5598 } 5599 5600 cb->args[2] = reg_idx; 5601 err = skb->len; 5602 out_err: 5603 rtnl_unlock(); 5604 return err; 5605 } 5606 5607 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 5608 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 5609 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5610 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5611 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5612 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5613 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5614 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5615 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 5616 }; 5617 5618 static int parse_reg_rule(struct nlattr *tb[], 5619 struct ieee80211_reg_rule *reg_rule) 5620 { 5621 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 5622 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 5623 5624 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 5625 return -EINVAL; 5626 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 5627 return -EINVAL; 5628 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 5629 return -EINVAL; 5630 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 5631 return -EINVAL; 5632 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 5633 return -EINVAL; 5634 5635 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 5636 5637 freq_range->start_freq_khz = 5638 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 5639 freq_range->end_freq_khz = 5640 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 5641 freq_range->max_bandwidth_khz = 5642 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 5643 5644 power_rule->max_eirp = 5645 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 5646 5647 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 5648 power_rule->max_antenna_gain = 5649 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 5650 5651 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 5652 reg_rule->dfs_cac_ms = 5653 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 5654 5655 return 0; 5656 } 5657 5658 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5659 { 5660 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5661 struct nlattr *nl_reg_rule; 5662 char *alpha2; 5663 int rem_reg_rules, r; 5664 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5665 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5666 struct ieee80211_regdomain *rd; 5667 5668 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5669 return -EINVAL; 5670 5671 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5672 return -EINVAL; 5673 5674 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5675 5676 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5677 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5678 5679 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5680 rem_reg_rules) { 5681 num_rules++; 5682 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5683 return -EINVAL; 5684 } 5685 5686 if (!reg_is_valid_request(alpha2)) 5687 return -EINVAL; 5688 5689 size_of_regd = sizeof(struct ieee80211_regdomain) + 5690 num_rules * sizeof(struct ieee80211_reg_rule); 5691 5692 rd = kzalloc(size_of_regd, GFP_KERNEL); 5693 if (!rd) 5694 return -ENOMEM; 5695 5696 rd->n_reg_rules = num_rules; 5697 rd->alpha2[0] = alpha2[0]; 5698 rd->alpha2[1] = alpha2[1]; 5699 5700 /* 5701 * Disable DFS master mode if the DFS region was 5702 * not supported or known on this kernel. 5703 */ 5704 if (reg_supported_dfs_region(dfs_region)) 5705 rd->dfs_region = dfs_region; 5706 5707 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5708 rem_reg_rules) { 5709 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5710 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5711 reg_rule_policy); 5712 if (r) 5713 goto bad_reg; 5714 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5715 if (r) 5716 goto bad_reg; 5717 5718 rule_idx++; 5719 5720 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5721 r = -EINVAL; 5722 goto bad_reg; 5723 } 5724 } 5725 5726 r = set_regdom(rd, REGD_SOURCE_CRDA); 5727 /* set_regdom took ownership */ 5728 rd = NULL; 5729 5730 bad_reg: 5731 kfree(rd); 5732 return r; 5733 } 5734 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 5735 5736 static int validate_scan_freqs(struct nlattr *freqs) 5737 { 5738 struct nlattr *attr1, *attr2; 5739 int n_channels = 0, tmp1, tmp2; 5740 5741 nla_for_each_nested(attr1, freqs, tmp1) { 5742 n_channels++; 5743 /* 5744 * Some hardware has a limited channel list for 5745 * scanning, and it is pretty much nonsensical 5746 * to scan for a channel twice, so disallow that 5747 * and don't require drivers to check that the 5748 * channel list they get isn't longer than what 5749 * they can scan, as long as they can scan all 5750 * the channels they registered at once. 5751 */ 5752 nla_for_each_nested(attr2, freqs, tmp2) 5753 if (attr1 != attr2 && 5754 nla_get_u32(attr1) == nla_get_u32(attr2)) 5755 return 0; 5756 } 5757 5758 return n_channels; 5759 } 5760 5761 static int nl80211_parse_random_mac(struct nlattr **attrs, 5762 u8 *mac_addr, u8 *mac_addr_mask) 5763 { 5764 int i; 5765 5766 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5767 eth_zero_addr(mac_addr); 5768 eth_zero_addr(mac_addr_mask); 5769 mac_addr[0] = 0x2; 5770 mac_addr_mask[0] = 0x3; 5771 5772 return 0; 5773 } 5774 5775 /* need both or none */ 5776 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5777 return -EINVAL; 5778 5779 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5780 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5781 5782 /* don't allow or configure an mcast address */ 5783 if (!is_multicast_ether_addr(mac_addr_mask) || 5784 is_multicast_ether_addr(mac_addr)) 5785 return -EINVAL; 5786 5787 /* 5788 * allow users to pass a MAC address that has bits set outside 5789 * of the mask, but don't bother drivers with having to deal 5790 * with such bits 5791 */ 5792 for (i = 0; i < ETH_ALEN; i++) 5793 mac_addr[i] &= mac_addr_mask[i]; 5794 5795 return 0; 5796 } 5797 5798 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5799 { 5800 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5801 struct wireless_dev *wdev = info->user_ptr[1]; 5802 struct cfg80211_scan_request *request; 5803 struct nlattr *attr; 5804 struct wiphy *wiphy; 5805 int err, tmp, n_ssids = 0, n_channels, i; 5806 size_t ie_len; 5807 5808 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5809 return -EINVAL; 5810 5811 wiphy = &rdev->wiphy; 5812 5813 if (!rdev->ops->scan) 5814 return -EOPNOTSUPP; 5815 5816 if (rdev->scan_req || rdev->scan_msg) { 5817 err = -EBUSY; 5818 goto unlock; 5819 } 5820 5821 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5822 n_channels = validate_scan_freqs( 5823 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5824 if (!n_channels) { 5825 err = -EINVAL; 5826 goto unlock; 5827 } 5828 } else { 5829 n_channels = ieee80211_get_num_supported_channels(wiphy); 5830 } 5831 5832 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5833 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5834 n_ssids++; 5835 5836 if (n_ssids > wiphy->max_scan_ssids) { 5837 err = -EINVAL; 5838 goto unlock; 5839 } 5840 5841 if (info->attrs[NL80211_ATTR_IE]) 5842 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5843 else 5844 ie_len = 0; 5845 5846 if (ie_len > wiphy->max_scan_ie_len) { 5847 err = -EINVAL; 5848 goto unlock; 5849 } 5850 5851 request = kzalloc(sizeof(*request) 5852 + sizeof(*request->ssids) * n_ssids 5853 + sizeof(*request->channels) * n_channels 5854 + ie_len, GFP_KERNEL); 5855 if (!request) { 5856 err = -ENOMEM; 5857 goto unlock; 5858 } 5859 5860 if (n_ssids) 5861 request->ssids = (void *)&request->channels[n_channels]; 5862 request->n_ssids = n_ssids; 5863 if (ie_len) { 5864 if (n_ssids) 5865 request->ie = (void *)(request->ssids + n_ssids); 5866 else 5867 request->ie = (void *)(request->channels + n_channels); 5868 } 5869 5870 i = 0; 5871 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5872 /* user specified, bail out if channel not found */ 5873 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5874 struct ieee80211_channel *chan; 5875 5876 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5877 5878 if (!chan) { 5879 err = -EINVAL; 5880 goto out_free; 5881 } 5882 5883 /* ignore disabled channels */ 5884 if (chan->flags & IEEE80211_CHAN_DISABLED) 5885 continue; 5886 5887 request->channels[i] = chan; 5888 i++; 5889 } 5890 } else { 5891 enum ieee80211_band band; 5892 5893 /* all channels */ 5894 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5895 int j; 5896 if (!wiphy->bands[band]) 5897 continue; 5898 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5899 struct ieee80211_channel *chan; 5900 5901 chan = &wiphy->bands[band]->channels[j]; 5902 5903 if (chan->flags & IEEE80211_CHAN_DISABLED) 5904 continue; 5905 5906 request->channels[i] = chan; 5907 i++; 5908 } 5909 } 5910 } 5911 5912 if (!i) { 5913 err = -EINVAL; 5914 goto out_free; 5915 } 5916 5917 request->n_channels = i; 5918 5919 i = 0; 5920 if (n_ssids) { 5921 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5922 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5923 err = -EINVAL; 5924 goto out_free; 5925 } 5926 request->ssids[i].ssid_len = nla_len(attr); 5927 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5928 i++; 5929 } 5930 } 5931 5932 if (info->attrs[NL80211_ATTR_IE]) { 5933 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5934 memcpy((void *)request->ie, 5935 nla_data(info->attrs[NL80211_ATTR_IE]), 5936 request->ie_len); 5937 } 5938 5939 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5940 if (wiphy->bands[i]) 5941 request->rates[i] = 5942 (1 << wiphy->bands[i]->n_bitrates) - 1; 5943 5944 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5945 nla_for_each_nested(attr, 5946 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5947 tmp) { 5948 enum ieee80211_band band = nla_type(attr); 5949 5950 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5951 err = -EINVAL; 5952 goto out_free; 5953 } 5954 5955 if (!wiphy->bands[band]) 5956 continue; 5957 5958 err = ieee80211_get_ratemask(wiphy->bands[band], 5959 nla_data(attr), 5960 nla_len(attr), 5961 &request->rates[band]); 5962 if (err) 5963 goto out_free; 5964 } 5965 } 5966 5967 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5968 request->flags = nla_get_u32( 5969 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5970 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5971 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5972 err = -EOPNOTSUPP; 5973 goto out_free; 5974 } 5975 5976 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5977 if (!(wiphy->features & 5978 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5979 err = -EOPNOTSUPP; 5980 goto out_free; 5981 } 5982 5983 if (wdev->current_bss) { 5984 err = -EOPNOTSUPP; 5985 goto out_free; 5986 } 5987 5988 err = nl80211_parse_random_mac(info->attrs, 5989 request->mac_addr, 5990 request->mac_addr_mask); 5991 if (err) 5992 goto out_free; 5993 } 5994 } 5995 5996 request->no_cck = 5997 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5998 5999 request->wdev = wdev; 6000 request->wiphy = &rdev->wiphy; 6001 request->scan_start = jiffies; 6002 6003 rdev->scan_req = request; 6004 err = rdev_scan(rdev, request); 6005 6006 if (!err) { 6007 nl80211_send_scan_start(rdev, wdev); 6008 if (wdev->netdev) 6009 dev_hold(wdev->netdev); 6010 } else { 6011 out_free: 6012 rdev->scan_req = NULL; 6013 kfree(request); 6014 } 6015 6016 unlock: 6017 return err; 6018 } 6019 6020 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 6021 { 6022 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6023 struct wireless_dev *wdev = info->user_ptr[1]; 6024 6025 if (!rdev->ops->abort_scan) 6026 return -EOPNOTSUPP; 6027 6028 if (rdev->scan_msg) 6029 return 0; 6030 6031 if (!rdev->scan_req) 6032 return -ENOENT; 6033 6034 rdev_abort_scan(rdev, wdev); 6035 return 0; 6036 } 6037 6038 static int 6039 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 6040 struct cfg80211_sched_scan_request *request, 6041 struct nlattr **attrs) 6042 { 6043 int tmp, err, i = 0; 6044 struct nlattr *attr; 6045 6046 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6047 u32 interval; 6048 6049 /* 6050 * If scan plans are not specified, 6051 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this 6052 * case one scan plan will be set with the specified scan 6053 * interval and infinite number of iterations. 6054 */ 6055 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6056 return -EINVAL; 6057 6058 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 6059 if (!interval) 6060 return -EINVAL; 6061 6062 request->scan_plans[0].interval = 6063 DIV_ROUND_UP(interval, MSEC_PER_SEC); 6064 if (!request->scan_plans[0].interval) 6065 return -EINVAL; 6066 6067 if (request->scan_plans[0].interval > 6068 wiphy->max_sched_scan_plan_interval) 6069 request->scan_plans[0].interval = 6070 wiphy->max_sched_scan_plan_interval; 6071 6072 return 0; 6073 } 6074 6075 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 6076 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 6077 6078 if (WARN_ON(i >= n_plans)) 6079 return -EINVAL; 6080 6081 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX, 6082 nla_data(attr), nla_len(attr), 6083 nl80211_plan_policy); 6084 if (err) 6085 return err; 6086 6087 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 6088 return -EINVAL; 6089 6090 request->scan_plans[i].interval = 6091 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 6092 if (!request->scan_plans[i].interval || 6093 request->scan_plans[i].interval > 6094 wiphy->max_sched_scan_plan_interval) 6095 return -EINVAL; 6096 6097 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 6098 request->scan_plans[i].iterations = 6099 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 6100 if (!request->scan_plans[i].iterations || 6101 (request->scan_plans[i].iterations > 6102 wiphy->max_sched_scan_plan_iterations)) 6103 return -EINVAL; 6104 } else if (i < n_plans - 1) { 6105 /* 6106 * All scan plans but the last one must specify 6107 * a finite number of iterations 6108 */ 6109 return -EINVAL; 6110 } 6111 6112 i++; 6113 } 6114 6115 /* 6116 * The last scan plan must not specify the number of 6117 * iterations, it is supposed to run infinitely 6118 */ 6119 if (request->scan_plans[n_plans - 1].iterations) 6120 return -EINVAL; 6121 6122 return 0; 6123 } 6124 6125 static struct cfg80211_sched_scan_request * 6126 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 6127 struct nlattr **attrs) 6128 { 6129 struct cfg80211_sched_scan_request *request; 6130 struct nlattr *attr; 6131 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 6132 enum ieee80211_band band; 6133 size_t ie_len; 6134 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 6135 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 6136 6137 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 6138 return ERR_PTR(-EINVAL); 6139 6140 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6141 n_channels = validate_scan_freqs( 6142 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6143 if (!n_channels) 6144 return ERR_PTR(-EINVAL); 6145 } else { 6146 n_channels = ieee80211_get_num_supported_channels(wiphy); 6147 } 6148 6149 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 6150 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6151 tmp) 6152 n_ssids++; 6153 6154 if (n_ssids > wiphy->max_sched_scan_ssids) 6155 return ERR_PTR(-EINVAL); 6156 6157 /* 6158 * First, count the number of 'real' matchsets. Due to an issue with 6159 * the old implementation, matchsets containing only the RSSI attribute 6160 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 6161 * RSSI for all matchsets, rather than their own matchset for reporting 6162 * all APs with a strong RSSI. This is needed to be compatible with 6163 * older userspace that treated a matchset with only the RSSI as the 6164 * global RSSI for all other matchsets - if there are other matchsets. 6165 */ 6166 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6167 nla_for_each_nested(attr, 6168 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6169 tmp) { 6170 struct nlattr *rssi; 6171 6172 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6173 nla_data(attr), nla_len(attr), 6174 nl80211_match_policy); 6175 if (err) 6176 return ERR_PTR(err); 6177 /* add other standalone attributes here */ 6178 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6179 n_match_sets++; 6180 continue; 6181 } 6182 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6183 if (rssi) 6184 default_match_rssi = nla_get_s32(rssi); 6185 } 6186 } 6187 6188 /* However, if there's no other matchset, add the RSSI one */ 6189 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6190 n_match_sets = 1; 6191 6192 if (n_match_sets > wiphy->max_match_sets) 6193 return ERR_PTR(-EINVAL); 6194 6195 if (attrs[NL80211_ATTR_IE]) 6196 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6197 else 6198 ie_len = 0; 6199 6200 if (ie_len > wiphy->max_sched_scan_ie_len) 6201 return ERR_PTR(-EINVAL); 6202 6203 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6204 /* 6205 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 6206 * each scan plan already specifies its own interval 6207 */ 6208 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6209 return ERR_PTR(-EINVAL); 6210 6211 nla_for_each_nested(attr, 6212 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 6213 n_plans++; 6214 } else { 6215 /* 6216 * The scan interval attribute is kept for backward 6217 * compatibility. If no scan plans are specified and sched scan 6218 * interval is specified, one scan plan will be set with this 6219 * scan interval and infinite number of iterations. 6220 */ 6221 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6222 return ERR_PTR(-EINVAL); 6223 6224 n_plans = 1; 6225 } 6226 6227 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 6228 return ERR_PTR(-EINVAL); 6229 6230 request = kzalloc(sizeof(*request) 6231 + sizeof(*request->ssids) * n_ssids 6232 + sizeof(*request->match_sets) * n_match_sets 6233 + sizeof(*request->scan_plans) * n_plans 6234 + sizeof(*request->channels) * n_channels 6235 + ie_len, GFP_KERNEL); 6236 if (!request) 6237 return ERR_PTR(-ENOMEM); 6238 6239 if (n_ssids) 6240 request->ssids = (void *)&request->channels[n_channels]; 6241 request->n_ssids = n_ssids; 6242 if (ie_len) { 6243 if (n_ssids) 6244 request->ie = (void *)(request->ssids + n_ssids); 6245 else 6246 request->ie = (void *)(request->channels + n_channels); 6247 } 6248 6249 if (n_match_sets) { 6250 if (request->ie) 6251 request->match_sets = (void *)(request->ie + ie_len); 6252 else if (n_ssids) 6253 request->match_sets = 6254 (void *)(request->ssids + n_ssids); 6255 else 6256 request->match_sets = 6257 (void *)(request->channels + n_channels); 6258 } 6259 request->n_match_sets = n_match_sets; 6260 6261 if (n_match_sets) 6262 request->scan_plans = (void *)(request->match_sets + 6263 n_match_sets); 6264 else if (request->ie) 6265 request->scan_plans = (void *)(request->ie + ie_len); 6266 else if (n_ssids) 6267 request->scan_plans = (void *)(request->ssids + n_ssids); 6268 else 6269 request->scan_plans = (void *)(request->channels + n_channels); 6270 6271 request->n_scan_plans = n_plans; 6272 6273 i = 0; 6274 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6275 /* user specified, bail out if channel not found */ 6276 nla_for_each_nested(attr, 6277 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6278 tmp) { 6279 struct ieee80211_channel *chan; 6280 6281 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6282 6283 if (!chan) { 6284 err = -EINVAL; 6285 goto out_free; 6286 } 6287 6288 /* ignore disabled channels */ 6289 if (chan->flags & IEEE80211_CHAN_DISABLED) 6290 continue; 6291 6292 request->channels[i] = chan; 6293 i++; 6294 } 6295 } else { 6296 /* all channels */ 6297 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6298 int j; 6299 if (!wiphy->bands[band]) 6300 continue; 6301 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6302 struct ieee80211_channel *chan; 6303 6304 chan = &wiphy->bands[band]->channels[j]; 6305 6306 if (chan->flags & IEEE80211_CHAN_DISABLED) 6307 continue; 6308 6309 request->channels[i] = chan; 6310 i++; 6311 } 6312 } 6313 } 6314 6315 if (!i) { 6316 err = -EINVAL; 6317 goto out_free; 6318 } 6319 6320 request->n_channels = i; 6321 6322 i = 0; 6323 if (n_ssids) { 6324 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6325 tmp) { 6326 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6327 err = -EINVAL; 6328 goto out_free; 6329 } 6330 request->ssids[i].ssid_len = nla_len(attr); 6331 memcpy(request->ssids[i].ssid, nla_data(attr), 6332 nla_len(attr)); 6333 i++; 6334 } 6335 } 6336 6337 i = 0; 6338 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6339 nla_for_each_nested(attr, 6340 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6341 tmp) { 6342 struct nlattr *ssid, *rssi; 6343 6344 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6345 nla_data(attr), nla_len(attr), 6346 nl80211_match_policy); 6347 if (err) 6348 goto out_free; 6349 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6350 if (ssid) { 6351 if (WARN_ON(i >= n_match_sets)) { 6352 /* this indicates a programming error, 6353 * the loop above should have verified 6354 * things properly 6355 */ 6356 err = -EINVAL; 6357 goto out_free; 6358 } 6359 6360 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6361 err = -EINVAL; 6362 goto out_free; 6363 } 6364 memcpy(request->match_sets[i].ssid.ssid, 6365 nla_data(ssid), nla_len(ssid)); 6366 request->match_sets[i].ssid.ssid_len = 6367 nla_len(ssid); 6368 /* special attribute - old implemenation w/a */ 6369 request->match_sets[i].rssi_thold = 6370 default_match_rssi; 6371 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6372 if (rssi) 6373 request->match_sets[i].rssi_thold = 6374 nla_get_s32(rssi); 6375 } 6376 i++; 6377 } 6378 6379 /* there was no other matchset, so the RSSI one is alone */ 6380 if (i == 0 && n_match_sets) 6381 request->match_sets[0].rssi_thold = default_match_rssi; 6382 6383 request->min_rssi_thold = INT_MAX; 6384 for (i = 0; i < n_match_sets; i++) 6385 request->min_rssi_thold = 6386 min(request->match_sets[i].rssi_thold, 6387 request->min_rssi_thold); 6388 } else { 6389 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6390 } 6391 6392 if (ie_len) { 6393 request->ie_len = ie_len; 6394 memcpy((void *)request->ie, 6395 nla_data(attrs[NL80211_ATTR_IE]), 6396 request->ie_len); 6397 } 6398 6399 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6400 request->flags = nla_get_u32( 6401 attrs[NL80211_ATTR_SCAN_FLAGS]); 6402 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6403 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6404 err = -EOPNOTSUPP; 6405 goto out_free; 6406 } 6407 6408 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6409 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6410 6411 if (!wdev) /* must be net-detect */ 6412 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6413 6414 if (!(wiphy->features & flg)) { 6415 err = -EOPNOTSUPP; 6416 goto out_free; 6417 } 6418 6419 if (wdev && wdev->current_bss) { 6420 err = -EOPNOTSUPP; 6421 goto out_free; 6422 } 6423 6424 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6425 request->mac_addr_mask); 6426 if (err) 6427 goto out_free; 6428 } 6429 } 6430 6431 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6432 request->delay = 6433 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6434 6435 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 6436 if (err) 6437 goto out_free; 6438 6439 request->scan_start = jiffies; 6440 6441 return request; 6442 6443 out_free: 6444 kfree(request); 6445 return ERR_PTR(err); 6446 } 6447 6448 static int nl80211_start_sched_scan(struct sk_buff *skb, 6449 struct genl_info *info) 6450 { 6451 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6452 struct net_device *dev = info->user_ptr[1]; 6453 struct wireless_dev *wdev = dev->ieee80211_ptr; 6454 struct cfg80211_sched_scan_request *sched_scan_req; 6455 int err; 6456 6457 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6458 !rdev->ops->sched_scan_start) 6459 return -EOPNOTSUPP; 6460 6461 if (rdev->sched_scan_req) 6462 return -EINPROGRESS; 6463 6464 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6465 info->attrs); 6466 6467 err = PTR_ERR_OR_ZERO(sched_scan_req); 6468 if (err) 6469 goto out_err; 6470 6471 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6472 if (err) 6473 goto out_free; 6474 6475 sched_scan_req->dev = dev; 6476 sched_scan_req->wiphy = &rdev->wiphy; 6477 6478 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6479 sched_scan_req->owner_nlportid = info->snd_portid; 6480 6481 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6482 6483 nl80211_send_sched_scan(rdev, dev, 6484 NL80211_CMD_START_SCHED_SCAN); 6485 return 0; 6486 6487 out_free: 6488 kfree(sched_scan_req); 6489 out_err: 6490 return err; 6491 } 6492 6493 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6494 struct genl_info *info) 6495 { 6496 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6497 6498 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6499 !rdev->ops->sched_scan_stop) 6500 return -EOPNOTSUPP; 6501 6502 return __cfg80211_stop_sched_scan(rdev, false); 6503 } 6504 6505 static int nl80211_start_radar_detection(struct sk_buff *skb, 6506 struct genl_info *info) 6507 { 6508 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6509 struct net_device *dev = info->user_ptr[1]; 6510 struct wireless_dev *wdev = dev->ieee80211_ptr; 6511 struct cfg80211_chan_def chandef; 6512 enum nl80211_dfs_regions dfs_region; 6513 unsigned int cac_time_ms; 6514 int err; 6515 6516 dfs_region = reg_get_dfs_region(wdev->wiphy); 6517 if (dfs_region == NL80211_DFS_UNSET) 6518 return -EINVAL; 6519 6520 err = nl80211_parse_chandef(rdev, info, &chandef); 6521 if (err) 6522 return err; 6523 6524 if (netif_carrier_ok(dev)) 6525 return -EBUSY; 6526 6527 if (wdev->cac_started) 6528 return -EBUSY; 6529 6530 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6531 wdev->iftype); 6532 if (err < 0) 6533 return err; 6534 6535 if (err == 0) 6536 return -EINVAL; 6537 6538 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6539 return -EINVAL; 6540 6541 if (!rdev->ops->start_radar_detection) 6542 return -EOPNOTSUPP; 6543 6544 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6545 if (WARN_ON(!cac_time_ms)) 6546 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6547 6548 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 6549 if (!err) { 6550 wdev->chandef = chandef; 6551 wdev->cac_started = true; 6552 wdev->cac_start_time = jiffies; 6553 wdev->cac_time_ms = cac_time_ms; 6554 } 6555 return err; 6556 } 6557 6558 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6559 { 6560 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6561 struct net_device *dev = info->user_ptr[1]; 6562 struct wireless_dev *wdev = dev->ieee80211_ptr; 6563 struct cfg80211_csa_settings params; 6564 /* csa_attrs is defined static to avoid waste of stack size - this 6565 * function is called under RTNL lock, so this should not be a problem. 6566 */ 6567 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6568 int err; 6569 bool need_new_beacon = false; 6570 int len, i; 6571 u32 cs_count; 6572 6573 if (!rdev->ops->channel_switch || 6574 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6575 return -EOPNOTSUPP; 6576 6577 switch (dev->ieee80211_ptr->iftype) { 6578 case NL80211_IFTYPE_AP: 6579 case NL80211_IFTYPE_P2P_GO: 6580 need_new_beacon = true; 6581 6582 /* useless if AP is not running */ 6583 if (!wdev->beacon_interval) 6584 return -ENOTCONN; 6585 break; 6586 case NL80211_IFTYPE_ADHOC: 6587 if (!wdev->ssid_len) 6588 return -ENOTCONN; 6589 break; 6590 case NL80211_IFTYPE_MESH_POINT: 6591 if (!wdev->mesh_id_len) 6592 return -ENOTCONN; 6593 break; 6594 default: 6595 return -EOPNOTSUPP; 6596 } 6597 6598 memset(¶ms, 0, sizeof(params)); 6599 6600 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6601 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6602 return -EINVAL; 6603 6604 /* only important for AP, IBSS and mesh create IEs internally */ 6605 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6606 return -EINVAL; 6607 6608 /* Even though the attribute is u32, the specification says 6609 * u8, so let's make sure we don't overflow. 6610 */ 6611 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6612 if (cs_count > 255) 6613 return -EINVAL; 6614 6615 params.count = cs_count; 6616 6617 if (!need_new_beacon) 6618 goto skip_beacons; 6619 6620 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6621 if (err) 6622 return err; 6623 6624 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6625 info->attrs[NL80211_ATTR_CSA_IES], 6626 nl80211_policy); 6627 if (err) 6628 return err; 6629 6630 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6631 if (err) 6632 return err; 6633 6634 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6635 return -EINVAL; 6636 6637 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6638 if (!len || (len % sizeof(u16))) 6639 return -EINVAL; 6640 6641 params.n_counter_offsets_beacon = len / sizeof(u16); 6642 if (rdev->wiphy.max_num_csa_counters && 6643 (params.n_counter_offsets_beacon > 6644 rdev->wiphy.max_num_csa_counters)) 6645 return -EINVAL; 6646 6647 params.counter_offsets_beacon = 6648 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6649 6650 /* sanity checks - counters should fit and be the same */ 6651 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6652 u16 offset = params.counter_offsets_beacon[i]; 6653 6654 if (offset >= params.beacon_csa.tail_len) 6655 return -EINVAL; 6656 6657 if (params.beacon_csa.tail[offset] != params.count) 6658 return -EINVAL; 6659 } 6660 6661 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6662 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6663 if (!len || (len % sizeof(u16))) 6664 return -EINVAL; 6665 6666 params.n_counter_offsets_presp = len / sizeof(u16); 6667 if (rdev->wiphy.max_num_csa_counters && 6668 (params.n_counter_offsets_beacon > 6669 rdev->wiphy.max_num_csa_counters)) 6670 return -EINVAL; 6671 6672 params.counter_offsets_presp = 6673 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6674 6675 /* sanity checks - counters should fit and be the same */ 6676 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6677 u16 offset = params.counter_offsets_presp[i]; 6678 6679 if (offset >= params.beacon_csa.probe_resp_len) 6680 return -EINVAL; 6681 6682 if (params.beacon_csa.probe_resp[offset] != 6683 params.count) 6684 return -EINVAL; 6685 } 6686 } 6687 6688 skip_beacons: 6689 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6690 if (err) 6691 return err; 6692 6693 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 6694 wdev->iftype)) 6695 return -EINVAL; 6696 6697 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6698 ¶ms.chandef, 6699 wdev->iftype); 6700 if (err < 0) 6701 return err; 6702 6703 if (err > 0) 6704 params.radar_required = true; 6705 6706 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6707 params.block_tx = true; 6708 6709 wdev_lock(wdev); 6710 err = rdev_channel_switch(rdev, dev, ¶ms); 6711 wdev_unlock(wdev); 6712 6713 return err; 6714 } 6715 6716 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6717 u32 seq, int flags, 6718 struct cfg80211_registered_device *rdev, 6719 struct wireless_dev *wdev, 6720 struct cfg80211_internal_bss *intbss) 6721 { 6722 struct cfg80211_bss *res = &intbss->pub; 6723 const struct cfg80211_bss_ies *ies; 6724 void *hdr; 6725 struct nlattr *bss; 6726 6727 ASSERT_WDEV_LOCK(wdev); 6728 6729 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6730 NL80211_CMD_NEW_SCAN_RESULTS); 6731 if (!hdr) 6732 return -1; 6733 6734 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6735 6736 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6737 goto nla_put_failure; 6738 if (wdev->netdev && 6739 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6740 goto nla_put_failure; 6741 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6742 goto nla_put_failure; 6743 6744 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6745 if (!bss) 6746 goto nla_put_failure; 6747 if ((!is_zero_ether_addr(res->bssid) && 6748 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6749 goto nla_put_failure; 6750 6751 rcu_read_lock(); 6752 /* indicate whether we have probe response data or not */ 6753 if (rcu_access_pointer(res->proberesp_ies) && 6754 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6755 goto fail_unlock_rcu; 6756 6757 /* this pointer prefers to be pointed to probe response data 6758 * but is always valid 6759 */ 6760 ies = rcu_dereference(res->ies); 6761 if (ies) { 6762 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6763 goto fail_unlock_rcu; 6764 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6765 ies->len, ies->data)) 6766 goto fail_unlock_rcu; 6767 } 6768 6769 /* and this pointer is always (unless driver didn't know) beacon data */ 6770 ies = rcu_dereference(res->beacon_ies); 6771 if (ies && ies->from_beacon) { 6772 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6773 goto fail_unlock_rcu; 6774 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6775 ies->len, ies->data)) 6776 goto fail_unlock_rcu; 6777 } 6778 rcu_read_unlock(); 6779 6780 if (res->beacon_interval && 6781 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6782 goto nla_put_failure; 6783 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6784 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6785 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6786 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6787 jiffies_to_msecs(jiffies - intbss->ts))) 6788 goto nla_put_failure; 6789 6790 if (intbss->ts_boottime && 6791 nla_put_u64(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 6792 intbss->ts_boottime)) 6793 goto nla_put_failure; 6794 6795 switch (rdev->wiphy.signal_type) { 6796 case CFG80211_SIGNAL_TYPE_MBM: 6797 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6798 goto nla_put_failure; 6799 break; 6800 case CFG80211_SIGNAL_TYPE_UNSPEC: 6801 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6802 goto nla_put_failure; 6803 break; 6804 default: 6805 break; 6806 } 6807 6808 switch (wdev->iftype) { 6809 case NL80211_IFTYPE_P2P_CLIENT: 6810 case NL80211_IFTYPE_STATION: 6811 if (intbss == wdev->current_bss && 6812 nla_put_u32(msg, NL80211_BSS_STATUS, 6813 NL80211_BSS_STATUS_ASSOCIATED)) 6814 goto nla_put_failure; 6815 break; 6816 case NL80211_IFTYPE_ADHOC: 6817 if (intbss == wdev->current_bss && 6818 nla_put_u32(msg, NL80211_BSS_STATUS, 6819 NL80211_BSS_STATUS_IBSS_JOINED)) 6820 goto nla_put_failure; 6821 break; 6822 default: 6823 break; 6824 } 6825 6826 nla_nest_end(msg, bss); 6827 6828 genlmsg_end(msg, hdr); 6829 return 0; 6830 6831 fail_unlock_rcu: 6832 rcu_read_unlock(); 6833 nla_put_failure: 6834 genlmsg_cancel(msg, hdr); 6835 return -EMSGSIZE; 6836 } 6837 6838 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6839 { 6840 struct cfg80211_registered_device *rdev; 6841 struct cfg80211_internal_bss *scan; 6842 struct wireless_dev *wdev; 6843 int start = cb->args[2], idx = 0; 6844 int err; 6845 6846 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6847 if (err) 6848 return err; 6849 6850 wdev_lock(wdev); 6851 spin_lock_bh(&rdev->bss_lock); 6852 cfg80211_bss_expire(rdev); 6853 6854 cb->seq = rdev->bss_generation; 6855 6856 list_for_each_entry(scan, &rdev->bss_list, list) { 6857 if (++idx <= start) 6858 continue; 6859 if (nl80211_send_bss(skb, cb, 6860 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6861 rdev, wdev, scan) < 0) { 6862 idx--; 6863 break; 6864 } 6865 } 6866 6867 spin_unlock_bh(&rdev->bss_lock); 6868 wdev_unlock(wdev); 6869 6870 cb->args[2] = idx; 6871 nl80211_finish_wdev_dump(rdev); 6872 6873 return skb->len; 6874 } 6875 6876 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6877 int flags, struct net_device *dev, 6878 bool allow_radio_stats, 6879 struct survey_info *survey) 6880 { 6881 void *hdr; 6882 struct nlattr *infoattr; 6883 6884 /* skip radio stats if userspace didn't request them */ 6885 if (!survey->channel && !allow_radio_stats) 6886 return 0; 6887 6888 hdr = nl80211hdr_put(msg, portid, seq, flags, 6889 NL80211_CMD_NEW_SURVEY_RESULTS); 6890 if (!hdr) 6891 return -ENOMEM; 6892 6893 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6894 goto nla_put_failure; 6895 6896 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6897 if (!infoattr) 6898 goto nla_put_failure; 6899 6900 if (survey->channel && 6901 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6902 survey->channel->center_freq)) 6903 goto nla_put_failure; 6904 6905 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6906 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6907 goto nla_put_failure; 6908 if ((survey->filled & SURVEY_INFO_IN_USE) && 6909 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6910 goto nla_put_failure; 6911 if ((survey->filled & SURVEY_INFO_TIME) && 6912 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME, 6913 survey->time)) 6914 goto nla_put_failure; 6915 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 6916 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY, 6917 survey->time_busy)) 6918 goto nla_put_failure; 6919 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 6920 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 6921 survey->time_ext_busy)) 6922 goto nla_put_failure; 6923 if ((survey->filled & SURVEY_INFO_TIME_RX) && 6924 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX, 6925 survey->time_rx)) 6926 goto nla_put_failure; 6927 if ((survey->filled & SURVEY_INFO_TIME_TX) && 6928 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX, 6929 survey->time_tx)) 6930 goto nla_put_failure; 6931 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 6932 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN, 6933 survey->time_scan)) 6934 goto nla_put_failure; 6935 6936 nla_nest_end(msg, infoattr); 6937 6938 genlmsg_end(msg, hdr); 6939 return 0; 6940 6941 nla_put_failure: 6942 genlmsg_cancel(msg, hdr); 6943 return -EMSGSIZE; 6944 } 6945 6946 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 6947 { 6948 struct survey_info survey; 6949 struct cfg80211_registered_device *rdev; 6950 struct wireless_dev *wdev; 6951 int survey_idx = cb->args[2]; 6952 int res; 6953 bool radio_stats; 6954 6955 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6956 if (res) 6957 return res; 6958 6959 /* prepare_wdev_dump parsed the attributes */ 6960 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 6961 6962 if (!wdev->netdev) { 6963 res = -EINVAL; 6964 goto out_err; 6965 } 6966 6967 if (!rdev->ops->dump_survey) { 6968 res = -EOPNOTSUPP; 6969 goto out_err; 6970 } 6971 6972 while (1) { 6973 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6974 if (res == -ENOENT) 6975 break; 6976 if (res) 6977 goto out_err; 6978 6979 /* don't send disabled channels, but do send non-channel data */ 6980 if (survey.channel && 6981 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6982 survey_idx++; 6983 continue; 6984 } 6985 6986 if (nl80211_send_survey(skb, 6987 NETLINK_CB(cb->skb).portid, 6988 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6989 wdev->netdev, radio_stats, &survey) < 0) 6990 goto out; 6991 survey_idx++; 6992 } 6993 6994 out: 6995 cb->args[2] = survey_idx; 6996 res = skb->len; 6997 out_err: 6998 nl80211_finish_wdev_dump(rdev); 6999 return res; 7000 } 7001 7002 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 7003 { 7004 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 7005 NL80211_WPA_VERSION_2)); 7006 } 7007 7008 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 7009 { 7010 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7011 struct net_device *dev = info->user_ptr[1]; 7012 struct ieee80211_channel *chan; 7013 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 7014 int err, ssid_len, ie_len = 0, sae_data_len = 0; 7015 enum nl80211_auth_type auth_type; 7016 struct key_parse key; 7017 bool local_state_change; 7018 7019 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7020 return -EINVAL; 7021 7022 if (!info->attrs[NL80211_ATTR_MAC]) 7023 return -EINVAL; 7024 7025 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 7026 return -EINVAL; 7027 7028 if (!info->attrs[NL80211_ATTR_SSID]) 7029 return -EINVAL; 7030 7031 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7032 return -EINVAL; 7033 7034 err = nl80211_parse_key(info, &key); 7035 if (err) 7036 return err; 7037 7038 if (key.idx >= 0) { 7039 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 7040 return -EINVAL; 7041 if (!key.p.key || !key.p.key_len) 7042 return -EINVAL; 7043 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 7044 key.p.key_len != WLAN_KEY_LEN_WEP40) && 7045 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 7046 key.p.key_len != WLAN_KEY_LEN_WEP104)) 7047 return -EINVAL; 7048 if (key.idx > 4) 7049 return -EINVAL; 7050 } else { 7051 key.p.key_len = 0; 7052 key.p.key = NULL; 7053 } 7054 7055 if (key.idx >= 0) { 7056 int i; 7057 bool ok = false; 7058 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 7059 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 7060 ok = true; 7061 break; 7062 } 7063 } 7064 if (!ok) 7065 return -EINVAL; 7066 } 7067 7068 if (!rdev->ops->auth) 7069 return -EOPNOTSUPP; 7070 7071 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7072 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7073 return -EOPNOTSUPP; 7074 7075 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7076 chan = nl80211_get_valid_chan(&rdev->wiphy, 7077 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7078 if (!chan) 7079 return -EINVAL; 7080 7081 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7082 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7083 7084 if (info->attrs[NL80211_ATTR_IE]) { 7085 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7086 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7087 } 7088 7089 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7090 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 7091 return -EINVAL; 7092 7093 if (auth_type == NL80211_AUTHTYPE_SAE && 7094 !info->attrs[NL80211_ATTR_SAE_DATA]) 7095 return -EINVAL; 7096 7097 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 7098 if (auth_type != NL80211_AUTHTYPE_SAE) 7099 return -EINVAL; 7100 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 7101 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 7102 /* need to include at least Auth Transaction and Status Code */ 7103 if (sae_data_len < 4) 7104 return -EINVAL; 7105 } 7106 7107 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7108 7109 /* 7110 * Since we no longer track auth state, ignore 7111 * requests to only change local state. 7112 */ 7113 if (local_state_change) 7114 return 0; 7115 7116 wdev_lock(dev->ieee80211_ptr); 7117 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 7118 ssid, ssid_len, ie, ie_len, 7119 key.p.key, key.p.key_len, key.idx, 7120 sae_data, sae_data_len); 7121 wdev_unlock(dev->ieee80211_ptr); 7122 return err; 7123 } 7124 7125 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 7126 struct genl_info *info, 7127 struct cfg80211_crypto_settings *settings, 7128 int cipher_limit) 7129 { 7130 memset(settings, 0, sizeof(*settings)); 7131 7132 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 7133 7134 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 7135 u16 proto; 7136 proto = nla_get_u16( 7137 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 7138 settings->control_port_ethertype = cpu_to_be16(proto); 7139 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 7140 proto != ETH_P_PAE) 7141 return -EINVAL; 7142 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 7143 settings->control_port_no_encrypt = true; 7144 } else 7145 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 7146 7147 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 7148 void *data; 7149 int len, i; 7150 7151 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7152 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7153 settings->n_ciphers_pairwise = len / sizeof(u32); 7154 7155 if (len % sizeof(u32)) 7156 return -EINVAL; 7157 7158 if (settings->n_ciphers_pairwise > cipher_limit) 7159 return -EINVAL; 7160 7161 memcpy(settings->ciphers_pairwise, data, len); 7162 7163 for (i = 0; i < settings->n_ciphers_pairwise; i++) 7164 if (!cfg80211_supported_cipher_suite( 7165 &rdev->wiphy, 7166 settings->ciphers_pairwise[i])) 7167 return -EINVAL; 7168 } 7169 7170 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 7171 settings->cipher_group = 7172 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 7173 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 7174 settings->cipher_group)) 7175 return -EINVAL; 7176 } 7177 7178 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 7179 settings->wpa_versions = 7180 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 7181 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 7182 return -EINVAL; 7183 } 7184 7185 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 7186 void *data; 7187 int len; 7188 7189 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 7190 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 7191 settings->n_akm_suites = len / sizeof(u32); 7192 7193 if (len % sizeof(u32)) 7194 return -EINVAL; 7195 7196 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 7197 return -EINVAL; 7198 7199 memcpy(settings->akm_suites, data, len); 7200 } 7201 7202 return 0; 7203 } 7204 7205 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 7206 { 7207 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7208 struct net_device *dev = info->user_ptr[1]; 7209 struct ieee80211_channel *chan; 7210 struct cfg80211_assoc_request req = {}; 7211 const u8 *bssid, *ssid; 7212 int err, ssid_len = 0; 7213 7214 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7215 return -EINVAL; 7216 7217 if (!info->attrs[NL80211_ATTR_MAC] || 7218 !info->attrs[NL80211_ATTR_SSID] || 7219 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7220 return -EINVAL; 7221 7222 if (!rdev->ops->assoc) 7223 return -EOPNOTSUPP; 7224 7225 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7226 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7227 return -EOPNOTSUPP; 7228 7229 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7230 7231 chan = nl80211_get_valid_chan(&rdev->wiphy, 7232 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7233 if (!chan) 7234 return -EINVAL; 7235 7236 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7237 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7238 7239 if (info->attrs[NL80211_ATTR_IE]) { 7240 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7241 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7242 } 7243 7244 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7245 enum nl80211_mfp mfp = 7246 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7247 if (mfp == NL80211_MFP_REQUIRED) 7248 req.use_mfp = true; 7249 else if (mfp != NL80211_MFP_NO) 7250 return -EINVAL; 7251 } 7252 7253 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7254 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7255 7256 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7257 req.flags |= ASSOC_REQ_DISABLE_HT; 7258 7259 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7260 memcpy(&req.ht_capa_mask, 7261 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7262 sizeof(req.ht_capa_mask)); 7263 7264 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7265 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7266 return -EINVAL; 7267 memcpy(&req.ht_capa, 7268 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7269 sizeof(req.ht_capa)); 7270 } 7271 7272 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7273 req.flags |= ASSOC_REQ_DISABLE_VHT; 7274 7275 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7276 memcpy(&req.vht_capa_mask, 7277 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7278 sizeof(req.vht_capa_mask)); 7279 7280 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7281 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7282 return -EINVAL; 7283 memcpy(&req.vht_capa, 7284 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7285 sizeof(req.vht_capa)); 7286 } 7287 7288 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7289 if (!((rdev->wiphy.features & 7290 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 7291 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 7292 !wiphy_ext_feature_isset(&rdev->wiphy, 7293 NL80211_EXT_FEATURE_RRM)) 7294 return -EINVAL; 7295 req.flags |= ASSOC_REQ_USE_RRM; 7296 } 7297 7298 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7299 if (!err) { 7300 wdev_lock(dev->ieee80211_ptr); 7301 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7302 ssid, ssid_len, &req); 7303 wdev_unlock(dev->ieee80211_ptr); 7304 } 7305 7306 return err; 7307 } 7308 7309 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7310 { 7311 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7312 struct net_device *dev = info->user_ptr[1]; 7313 const u8 *ie = NULL, *bssid; 7314 int ie_len = 0, err; 7315 u16 reason_code; 7316 bool local_state_change; 7317 7318 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7319 return -EINVAL; 7320 7321 if (!info->attrs[NL80211_ATTR_MAC]) 7322 return -EINVAL; 7323 7324 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7325 return -EINVAL; 7326 7327 if (!rdev->ops->deauth) 7328 return -EOPNOTSUPP; 7329 7330 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7331 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7332 return -EOPNOTSUPP; 7333 7334 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7335 7336 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7337 if (reason_code == 0) { 7338 /* Reason Code 0 is reserved */ 7339 return -EINVAL; 7340 } 7341 7342 if (info->attrs[NL80211_ATTR_IE]) { 7343 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7344 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7345 } 7346 7347 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7348 7349 wdev_lock(dev->ieee80211_ptr); 7350 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7351 local_state_change); 7352 wdev_unlock(dev->ieee80211_ptr); 7353 return err; 7354 } 7355 7356 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7357 { 7358 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7359 struct net_device *dev = info->user_ptr[1]; 7360 const u8 *ie = NULL, *bssid; 7361 int ie_len = 0, err; 7362 u16 reason_code; 7363 bool local_state_change; 7364 7365 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7366 return -EINVAL; 7367 7368 if (!info->attrs[NL80211_ATTR_MAC]) 7369 return -EINVAL; 7370 7371 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7372 return -EINVAL; 7373 7374 if (!rdev->ops->disassoc) 7375 return -EOPNOTSUPP; 7376 7377 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7378 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7379 return -EOPNOTSUPP; 7380 7381 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7382 7383 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7384 if (reason_code == 0) { 7385 /* Reason Code 0 is reserved */ 7386 return -EINVAL; 7387 } 7388 7389 if (info->attrs[NL80211_ATTR_IE]) { 7390 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7391 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7392 } 7393 7394 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7395 7396 wdev_lock(dev->ieee80211_ptr); 7397 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7398 local_state_change); 7399 wdev_unlock(dev->ieee80211_ptr); 7400 return err; 7401 } 7402 7403 static bool 7404 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7405 int mcast_rate[IEEE80211_NUM_BANDS], 7406 int rateval) 7407 { 7408 struct wiphy *wiphy = &rdev->wiphy; 7409 bool found = false; 7410 int band, i; 7411 7412 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7413 struct ieee80211_supported_band *sband; 7414 7415 sband = wiphy->bands[band]; 7416 if (!sband) 7417 continue; 7418 7419 for (i = 0; i < sband->n_bitrates; i++) { 7420 if (sband->bitrates[i].bitrate == rateval) { 7421 mcast_rate[band] = i + 1; 7422 found = true; 7423 break; 7424 } 7425 } 7426 } 7427 7428 return found; 7429 } 7430 7431 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7432 { 7433 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7434 struct net_device *dev = info->user_ptr[1]; 7435 struct cfg80211_ibss_params ibss; 7436 struct wiphy *wiphy; 7437 struct cfg80211_cached_keys *connkeys = NULL; 7438 int err; 7439 7440 memset(&ibss, 0, sizeof(ibss)); 7441 7442 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7443 return -EINVAL; 7444 7445 if (!info->attrs[NL80211_ATTR_SSID] || 7446 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7447 return -EINVAL; 7448 7449 ibss.beacon_interval = 100; 7450 7451 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7452 ibss.beacon_interval = 7453 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7454 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7455 return -EINVAL; 7456 } 7457 7458 if (!rdev->ops->join_ibss) 7459 return -EOPNOTSUPP; 7460 7461 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7462 return -EOPNOTSUPP; 7463 7464 wiphy = &rdev->wiphy; 7465 7466 if (info->attrs[NL80211_ATTR_MAC]) { 7467 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7468 7469 if (!is_valid_ether_addr(ibss.bssid)) 7470 return -EINVAL; 7471 } 7472 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7473 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7474 7475 if (info->attrs[NL80211_ATTR_IE]) { 7476 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7477 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7478 } 7479 7480 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7481 if (err) 7482 return err; 7483 7484 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7485 NL80211_IFTYPE_ADHOC)) 7486 return -EINVAL; 7487 7488 switch (ibss.chandef.width) { 7489 case NL80211_CHAN_WIDTH_5: 7490 case NL80211_CHAN_WIDTH_10: 7491 case NL80211_CHAN_WIDTH_20_NOHT: 7492 break; 7493 case NL80211_CHAN_WIDTH_20: 7494 case NL80211_CHAN_WIDTH_40: 7495 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7496 return -EINVAL; 7497 break; 7498 case NL80211_CHAN_WIDTH_80: 7499 case NL80211_CHAN_WIDTH_80P80: 7500 case NL80211_CHAN_WIDTH_160: 7501 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7502 return -EINVAL; 7503 if (!wiphy_ext_feature_isset(&rdev->wiphy, 7504 NL80211_EXT_FEATURE_VHT_IBSS)) 7505 return -EINVAL; 7506 break; 7507 default: 7508 return -EINVAL; 7509 } 7510 7511 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7512 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7513 7514 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7515 u8 *rates = 7516 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7517 int n_rates = 7518 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7519 struct ieee80211_supported_band *sband = 7520 wiphy->bands[ibss.chandef.chan->band]; 7521 7522 err = ieee80211_get_ratemask(sband, rates, n_rates, 7523 &ibss.basic_rates); 7524 if (err) 7525 return err; 7526 } 7527 7528 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7529 memcpy(&ibss.ht_capa_mask, 7530 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7531 sizeof(ibss.ht_capa_mask)); 7532 7533 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7534 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7535 return -EINVAL; 7536 memcpy(&ibss.ht_capa, 7537 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7538 sizeof(ibss.ht_capa)); 7539 } 7540 7541 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7542 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7543 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7544 return -EINVAL; 7545 7546 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7547 bool no_ht = false; 7548 7549 connkeys = nl80211_parse_connkeys(rdev, 7550 info->attrs[NL80211_ATTR_KEYS], 7551 &no_ht); 7552 if (IS_ERR(connkeys)) 7553 return PTR_ERR(connkeys); 7554 7555 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7556 no_ht) { 7557 kzfree(connkeys); 7558 return -EINVAL; 7559 } 7560 } 7561 7562 ibss.control_port = 7563 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7564 7565 ibss.userspace_handles_dfs = 7566 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7567 7568 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7569 if (err) 7570 kzfree(connkeys); 7571 return err; 7572 } 7573 7574 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7575 { 7576 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7577 struct net_device *dev = info->user_ptr[1]; 7578 7579 if (!rdev->ops->leave_ibss) 7580 return -EOPNOTSUPP; 7581 7582 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7583 return -EOPNOTSUPP; 7584 7585 return cfg80211_leave_ibss(rdev, dev, false); 7586 } 7587 7588 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7589 { 7590 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7591 struct net_device *dev = info->user_ptr[1]; 7592 int mcast_rate[IEEE80211_NUM_BANDS]; 7593 u32 nla_rate; 7594 int err; 7595 7596 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7597 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 7598 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 7599 return -EOPNOTSUPP; 7600 7601 if (!rdev->ops->set_mcast_rate) 7602 return -EOPNOTSUPP; 7603 7604 memset(mcast_rate, 0, sizeof(mcast_rate)); 7605 7606 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7607 return -EINVAL; 7608 7609 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7610 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7611 return -EINVAL; 7612 7613 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 7614 7615 return err; 7616 } 7617 7618 static struct sk_buff * 7619 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7620 struct wireless_dev *wdev, int approxlen, 7621 u32 portid, u32 seq, enum nl80211_commands cmd, 7622 enum nl80211_attrs attr, 7623 const struct nl80211_vendor_cmd_info *info, 7624 gfp_t gfp) 7625 { 7626 struct sk_buff *skb; 7627 void *hdr; 7628 struct nlattr *data; 7629 7630 skb = nlmsg_new(approxlen + 100, gfp); 7631 if (!skb) 7632 return NULL; 7633 7634 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7635 if (!hdr) { 7636 kfree_skb(skb); 7637 return NULL; 7638 } 7639 7640 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7641 goto nla_put_failure; 7642 7643 if (info) { 7644 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7645 info->vendor_id)) 7646 goto nla_put_failure; 7647 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7648 info->subcmd)) 7649 goto nla_put_failure; 7650 } 7651 7652 if (wdev) { 7653 if (nla_put_u64(skb, NL80211_ATTR_WDEV, 7654 wdev_id(wdev))) 7655 goto nla_put_failure; 7656 if (wdev->netdev && 7657 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 7658 wdev->netdev->ifindex)) 7659 goto nla_put_failure; 7660 } 7661 7662 data = nla_nest_start(skb, attr); 7663 7664 ((void **)skb->cb)[0] = rdev; 7665 ((void **)skb->cb)[1] = hdr; 7666 ((void **)skb->cb)[2] = data; 7667 7668 return skb; 7669 7670 nla_put_failure: 7671 kfree_skb(skb); 7672 return NULL; 7673 } 7674 7675 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7676 struct wireless_dev *wdev, 7677 enum nl80211_commands cmd, 7678 enum nl80211_attrs attr, 7679 int vendor_event_idx, 7680 int approxlen, gfp_t gfp) 7681 { 7682 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7683 const struct nl80211_vendor_cmd_info *info; 7684 7685 switch (cmd) { 7686 case NL80211_CMD_TESTMODE: 7687 if (WARN_ON(vendor_event_idx != -1)) 7688 return NULL; 7689 info = NULL; 7690 break; 7691 case NL80211_CMD_VENDOR: 7692 if (WARN_ON(vendor_event_idx < 0 || 7693 vendor_event_idx >= wiphy->n_vendor_events)) 7694 return NULL; 7695 info = &wiphy->vendor_events[vendor_event_idx]; 7696 break; 7697 default: 7698 WARN_ON(1); 7699 return NULL; 7700 } 7701 7702 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 7703 cmd, attr, info, gfp); 7704 } 7705 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7706 7707 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7708 { 7709 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7710 void *hdr = ((void **)skb->cb)[1]; 7711 struct nlattr *data = ((void **)skb->cb)[2]; 7712 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7713 7714 /* clear CB data for netlink core to own from now on */ 7715 memset(skb->cb, 0, sizeof(skb->cb)); 7716 7717 nla_nest_end(skb, data); 7718 genlmsg_end(skb, hdr); 7719 7720 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7721 mcgrp = NL80211_MCGRP_VENDOR; 7722 7723 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7724 mcgrp, gfp); 7725 } 7726 EXPORT_SYMBOL(__cfg80211_send_event_skb); 7727 7728 #ifdef CONFIG_NL80211_TESTMODE 7729 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7730 { 7731 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7732 struct wireless_dev *wdev = 7733 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7734 int err; 7735 7736 if (!rdev->ops->testmode_cmd) 7737 return -EOPNOTSUPP; 7738 7739 if (IS_ERR(wdev)) { 7740 err = PTR_ERR(wdev); 7741 if (err != -EINVAL) 7742 return err; 7743 wdev = NULL; 7744 } else if (wdev->wiphy != &rdev->wiphy) { 7745 return -EINVAL; 7746 } 7747 7748 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7749 return -EINVAL; 7750 7751 rdev->cur_cmd_info = info; 7752 err = rdev_testmode_cmd(rdev, wdev, 7753 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7754 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7755 rdev->cur_cmd_info = NULL; 7756 7757 return err; 7758 } 7759 7760 static int nl80211_testmode_dump(struct sk_buff *skb, 7761 struct netlink_callback *cb) 7762 { 7763 struct cfg80211_registered_device *rdev; 7764 int err; 7765 long phy_idx; 7766 void *data = NULL; 7767 int data_len = 0; 7768 7769 rtnl_lock(); 7770 7771 if (cb->args[0]) { 7772 /* 7773 * 0 is a valid index, but not valid for args[0], 7774 * so we need to offset by 1. 7775 */ 7776 phy_idx = cb->args[0] - 1; 7777 } else { 7778 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7779 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7780 nl80211_policy); 7781 if (err) 7782 goto out_err; 7783 7784 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7785 nl80211_fam.attrbuf); 7786 if (IS_ERR(rdev)) { 7787 err = PTR_ERR(rdev); 7788 goto out_err; 7789 } 7790 phy_idx = rdev->wiphy_idx; 7791 rdev = NULL; 7792 7793 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7794 cb->args[1] = 7795 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7796 } 7797 7798 if (cb->args[1]) { 7799 data = nla_data((void *)cb->args[1]); 7800 data_len = nla_len((void *)cb->args[1]); 7801 } 7802 7803 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7804 if (!rdev) { 7805 err = -ENOENT; 7806 goto out_err; 7807 } 7808 7809 if (!rdev->ops->testmode_dump) { 7810 err = -EOPNOTSUPP; 7811 goto out_err; 7812 } 7813 7814 while (1) { 7815 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7816 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7817 NL80211_CMD_TESTMODE); 7818 struct nlattr *tmdata; 7819 7820 if (!hdr) 7821 break; 7822 7823 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7824 genlmsg_cancel(skb, hdr); 7825 break; 7826 } 7827 7828 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7829 if (!tmdata) { 7830 genlmsg_cancel(skb, hdr); 7831 break; 7832 } 7833 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7834 nla_nest_end(skb, tmdata); 7835 7836 if (err == -ENOBUFS || err == -ENOENT) { 7837 genlmsg_cancel(skb, hdr); 7838 break; 7839 } else if (err) { 7840 genlmsg_cancel(skb, hdr); 7841 goto out_err; 7842 } 7843 7844 genlmsg_end(skb, hdr); 7845 } 7846 7847 err = skb->len; 7848 /* see above */ 7849 cb->args[0] = phy_idx + 1; 7850 out_err: 7851 rtnl_unlock(); 7852 return err; 7853 } 7854 #endif 7855 7856 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7857 { 7858 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7859 struct net_device *dev = info->user_ptr[1]; 7860 struct cfg80211_connect_params connect; 7861 struct wiphy *wiphy; 7862 struct cfg80211_cached_keys *connkeys = NULL; 7863 int err; 7864 7865 memset(&connect, 0, sizeof(connect)); 7866 7867 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7868 return -EINVAL; 7869 7870 if (!info->attrs[NL80211_ATTR_SSID] || 7871 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7872 return -EINVAL; 7873 7874 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7875 connect.auth_type = 7876 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7877 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7878 NL80211_CMD_CONNECT)) 7879 return -EINVAL; 7880 } else 7881 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7882 7883 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7884 7885 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7886 NL80211_MAX_NR_CIPHER_SUITES); 7887 if (err) 7888 return err; 7889 7890 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7891 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7892 return -EOPNOTSUPP; 7893 7894 wiphy = &rdev->wiphy; 7895 7896 connect.bg_scan_period = -1; 7897 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7898 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7899 connect.bg_scan_period = 7900 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7901 } 7902 7903 if (info->attrs[NL80211_ATTR_MAC]) 7904 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7905 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7906 connect.bssid_hint = 7907 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7908 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7909 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7910 7911 if (info->attrs[NL80211_ATTR_IE]) { 7912 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7913 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7914 } 7915 7916 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7917 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7918 if (connect.mfp != NL80211_MFP_REQUIRED && 7919 connect.mfp != NL80211_MFP_NO) 7920 return -EINVAL; 7921 } else { 7922 connect.mfp = NL80211_MFP_NO; 7923 } 7924 7925 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7926 connect.channel = nl80211_get_valid_chan( 7927 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7928 if (!connect.channel) 7929 return -EINVAL; 7930 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7931 connect.channel_hint = nl80211_get_valid_chan( 7932 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7933 if (!connect.channel_hint) 7934 return -EINVAL; 7935 } 7936 7937 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7938 connkeys = nl80211_parse_connkeys(rdev, 7939 info->attrs[NL80211_ATTR_KEYS], NULL); 7940 if (IS_ERR(connkeys)) 7941 return PTR_ERR(connkeys); 7942 } 7943 7944 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7945 connect.flags |= ASSOC_REQ_DISABLE_HT; 7946 7947 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7948 memcpy(&connect.ht_capa_mask, 7949 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7950 sizeof(connect.ht_capa_mask)); 7951 7952 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7953 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7954 kzfree(connkeys); 7955 return -EINVAL; 7956 } 7957 memcpy(&connect.ht_capa, 7958 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7959 sizeof(connect.ht_capa)); 7960 } 7961 7962 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7963 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7964 7965 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7966 memcpy(&connect.vht_capa_mask, 7967 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7968 sizeof(connect.vht_capa_mask)); 7969 7970 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7971 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7972 kzfree(connkeys); 7973 return -EINVAL; 7974 } 7975 memcpy(&connect.vht_capa, 7976 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7977 sizeof(connect.vht_capa)); 7978 } 7979 7980 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7981 if (!((rdev->wiphy.features & 7982 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 7983 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 7984 !wiphy_ext_feature_isset(&rdev->wiphy, 7985 NL80211_EXT_FEATURE_RRM)) { 7986 kzfree(connkeys); 7987 return -EINVAL; 7988 } 7989 connect.flags |= ASSOC_REQ_USE_RRM; 7990 } 7991 7992 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 7993 if (connect.pbss && !rdev->wiphy.bands[IEEE80211_BAND_60GHZ]) { 7994 kzfree(connkeys); 7995 return -EOPNOTSUPP; 7996 } 7997 7998 wdev_lock(dev->ieee80211_ptr); 7999 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 8000 wdev_unlock(dev->ieee80211_ptr); 8001 if (err) 8002 kzfree(connkeys); 8003 return err; 8004 } 8005 8006 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 8007 { 8008 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8009 struct net_device *dev = info->user_ptr[1]; 8010 u16 reason; 8011 int ret; 8012 8013 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8014 reason = WLAN_REASON_DEAUTH_LEAVING; 8015 else 8016 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8017 8018 if (reason == 0) 8019 return -EINVAL; 8020 8021 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8022 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8023 return -EOPNOTSUPP; 8024 8025 wdev_lock(dev->ieee80211_ptr); 8026 ret = cfg80211_disconnect(rdev, dev, reason, true); 8027 wdev_unlock(dev->ieee80211_ptr); 8028 return ret; 8029 } 8030 8031 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 8032 { 8033 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8034 struct net *net; 8035 int err; 8036 8037 if (info->attrs[NL80211_ATTR_PID]) { 8038 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 8039 8040 net = get_net_ns_by_pid(pid); 8041 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 8042 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 8043 8044 net = get_net_ns_by_fd(fd); 8045 } else { 8046 return -EINVAL; 8047 } 8048 8049 if (IS_ERR(net)) 8050 return PTR_ERR(net); 8051 8052 err = 0; 8053 8054 /* check if anything to do */ 8055 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 8056 err = cfg80211_switch_netns(rdev, net); 8057 8058 put_net(net); 8059 return err; 8060 } 8061 8062 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 8063 { 8064 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8065 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 8066 struct cfg80211_pmksa *pmksa) = NULL; 8067 struct net_device *dev = info->user_ptr[1]; 8068 struct cfg80211_pmksa pmksa; 8069 8070 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 8071 8072 if (!info->attrs[NL80211_ATTR_MAC]) 8073 return -EINVAL; 8074 8075 if (!info->attrs[NL80211_ATTR_PMKID]) 8076 return -EINVAL; 8077 8078 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 8079 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8080 8081 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8082 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8083 return -EOPNOTSUPP; 8084 8085 switch (info->genlhdr->cmd) { 8086 case NL80211_CMD_SET_PMKSA: 8087 rdev_ops = rdev->ops->set_pmksa; 8088 break; 8089 case NL80211_CMD_DEL_PMKSA: 8090 rdev_ops = rdev->ops->del_pmksa; 8091 break; 8092 default: 8093 WARN_ON(1); 8094 break; 8095 } 8096 8097 if (!rdev_ops) 8098 return -EOPNOTSUPP; 8099 8100 return rdev_ops(&rdev->wiphy, dev, &pmksa); 8101 } 8102 8103 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 8104 { 8105 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8106 struct net_device *dev = info->user_ptr[1]; 8107 8108 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8109 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8110 return -EOPNOTSUPP; 8111 8112 if (!rdev->ops->flush_pmksa) 8113 return -EOPNOTSUPP; 8114 8115 return rdev_flush_pmksa(rdev, dev); 8116 } 8117 8118 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 8119 { 8120 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8121 struct net_device *dev = info->user_ptr[1]; 8122 u8 action_code, dialog_token; 8123 u32 peer_capability = 0; 8124 u16 status_code; 8125 u8 *peer; 8126 bool initiator; 8127 8128 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8129 !rdev->ops->tdls_mgmt) 8130 return -EOPNOTSUPP; 8131 8132 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 8133 !info->attrs[NL80211_ATTR_STATUS_CODE] || 8134 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 8135 !info->attrs[NL80211_ATTR_IE] || 8136 !info->attrs[NL80211_ATTR_MAC]) 8137 return -EINVAL; 8138 8139 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8140 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 8141 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 8142 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 8143 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 8144 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 8145 peer_capability = 8146 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 8147 8148 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 8149 dialog_token, status_code, peer_capability, 8150 initiator, 8151 nla_data(info->attrs[NL80211_ATTR_IE]), 8152 nla_len(info->attrs[NL80211_ATTR_IE])); 8153 } 8154 8155 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 8156 { 8157 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8158 struct net_device *dev = info->user_ptr[1]; 8159 enum nl80211_tdls_operation operation; 8160 u8 *peer; 8161 8162 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8163 !rdev->ops->tdls_oper) 8164 return -EOPNOTSUPP; 8165 8166 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 8167 !info->attrs[NL80211_ATTR_MAC]) 8168 return -EINVAL; 8169 8170 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 8171 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8172 8173 return rdev_tdls_oper(rdev, dev, peer, operation); 8174 } 8175 8176 static int nl80211_remain_on_channel(struct sk_buff *skb, 8177 struct genl_info *info) 8178 { 8179 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8180 struct wireless_dev *wdev = info->user_ptr[1]; 8181 struct cfg80211_chan_def chandef; 8182 struct sk_buff *msg; 8183 void *hdr; 8184 u64 cookie; 8185 u32 duration; 8186 int err; 8187 8188 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 8189 !info->attrs[NL80211_ATTR_DURATION]) 8190 return -EINVAL; 8191 8192 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8193 8194 if (!rdev->ops->remain_on_channel || 8195 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 8196 return -EOPNOTSUPP; 8197 8198 /* 8199 * We should be on that channel for at least a minimum amount of 8200 * time (10ms) but no longer than the driver supports. 8201 */ 8202 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8203 duration > rdev->wiphy.max_remain_on_channel_duration) 8204 return -EINVAL; 8205 8206 err = nl80211_parse_chandef(rdev, info, &chandef); 8207 if (err) 8208 return err; 8209 8210 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8211 if (!msg) 8212 return -ENOMEM; 8213 8214 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8215 NL80211_CMD_REMAIN_ON_CHANNEL); 8216 if (!hdr) { 8217 err = -ENOBUFS; 8218 goto free_msg; 8219 } 8220 8221 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 8222 duration, &cookie); 8223 8224 if (err) 8225 goto free_msg; 8226 8227 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8228 goto nla_put_failure; 8229 8230 genlmsg_end(msg, hdr); 8231 8232 return genlmsg_reply(msg, info); 8233 8234 nla_put_failure: 8235 err = -ENOBUFS; 8236 free_msg: 8237 nlmsg_free(msg); 8238 return err; 8239 } 8240 8241 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 8242 struct genl_info *info) 8243 { 8244 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8245 struct wireless_dev *wdev = info->user_ptr[1]; 8246 u64 cookie; 8247 8248 if (!info->attrs[NL80211_ATTR_COOKIE]) 8249 return -EINVAL; 8250 8251 if (!rdev->ops->cancel_remain_on_channel) 8252 return -EOPNOTSUPP; 8253 8254 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8255 8256 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8257 } 8258 8259 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8260 u8 *rates, u8 rates_len) 8261 { 8262 u8 i; 8263 u32 mask = 0; 8264 8265 for (i = 0; i < rates_len; i++) { 8266 int rate = (rates[i] & 0x7f) * 5; 8267 int ridx; 8268 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8269 struct ieee80211_rate *srate = 8270 &sband->bitrates[ridx]; 8271 if (rate == srate->bitrate) { 8272 mask |= 1 << ridx; 8273 break; 8274 } 8275 } 8276 if (ridx == sband->n_bitrates) 8277 return 0; /* rate not found */ 8278 } 8279 8280 return mask; 8281 } 8282 8283 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8284 u8 *rates, u8 rates_len, 8285 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8286 { 8287 u8 i; 8288 8289 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8290 8291 for (i = 0; i < rates_len; i++) { 8292 int ridx, rbit; 8293 8294 ridx = rates[i] / 8; 8295 rbit = BIT(rates[i] % 8); 8296 8297 /* check validity */ 8298 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8299 return false; 8300 8301 /* check availability */ 8302 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8303 mcs[ridx] |= rbit; 8304 else 8305 return false; 8306 } 8307 8308 return true; 8309 } 8310 8311 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8312 { 8313 u16 mcs_mask = 0; 8314 8315 switch (vht_mcs_map) { 8316 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8317 break; 8318 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8319 mcs_mask = 0x00FF; 8320 break; 8321 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8322 mcs_mask = 0x01FF; 8323 break; 8324 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8325 mcs_mask = 0x03FF; 8326 break; 8327 default: 8328 break; 8329 } 8330 8331 return mcs_mask; 8332 } 8333 8334 static void vht_build_mcs_mask(u16 vht_mcs_map, 8335 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8336 { 8337 u8 nss; 8338 8339 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8340 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8341 vht_mcs_map >>= 2; 8342 } 8343 } 8344 8345 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8346 struct nl80211_txrate_vht *txrate, 8347 u16 mcs[NL80211_VHT_NSS_MAX]) 8348 { 8349 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8350 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8351 u8 i; 8352 8353 if (!sband->vht_cap.vht_supported) 8354 return false; 8355 8356 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8357 8358 /* Build vht_mcs_mask from VHT capabilities */ 8359 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8360 8361 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8362 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8363 mcs[i] = txrate->mcs[i]; 8364 else 8365 return false; 8366 } 8367 8368 return true; 8369 } 8370 8371 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8372 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8373 .len = NL80211_MAX_SUPP_RATES }, 8374 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8375 .len = NL80211_MAX_SUPP_HT_RATES }, 8376 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8377 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8378 }; 8379 8380 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8381 struct genl_info *info) 8382 { 8383 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8384 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8385 struct cfg80211_bitrate_mask mask; 8386 int rem, i; 8387 struct net_device *dev = info->user_ptr[1]; 8388 struct nlattr *tx_rates; 8389 struct ieee80211_supported_band *sband; 8390 u16 vht_tx_mcs_map; 8391 8392 if (!rdev->ops->set_bitrate_mask) 8393 return -EOPNOTSUPP; 8394 8395 memset(&mask, 0, sizeof(mask)); 8396 /* Default to all rates enabled */ 8397 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 8398 sband = rdev->wiphy.bands[i]; 8399 8400 if (!sband) 8401 continue; 8402 8403 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8404 memcpy(mask.control[i].ht_mcs, 8405 sband->ht_cap.mcs.rx_mask, 8406 sizeof(mask.control[i].ht_mcs)); 8407 8408 if (!sband->vht_cap.vht_supported) 8409 continue; 8410 8411 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8412 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8413 } 8414 8415 /* if no rates are given set it back to the defaults */ 8416 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8417 goto out; 8418 8419 /* 8420 * The nested attribute uses enum nl80211_band as the index. This maps 8421 * directly to the enum ieee80211_band values used in cfg80211. 8422 */ 8423 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8424 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8425 enum ieee80211_band band = nla_type(tx_rates); 8426 int err; 8427 8428 if (band < 0 || band >= IEEE80211_NUM_BANDS) 8429 return -EINVAL; 8430 sband = rdev->wiphy.bands[band]; 8431 if (sband == NULL) 8432 return -EINVAL; 8433 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8434 nla_len(tx_rates), nl80211_txattr_policy); 8435 if (err) 8436 return err; 8437 if (tb[NL80211_TXRATE_LEGACY]) { 8438 mask.control[band].legacy = rateset_to_mask( 8439 sband, 8440 nla_data(tb[NL80211_TXRATE_LEGACY]), 8441 nla_len(tb[NL80211_TXRATE_LEGACY])); 8442 if ((mask.control[band].legacy == 0) && 8443 nla_len(tb[NL80211_TXRATE_LEGACY])) 8444 return -EINVAL; 8445 } 8446 if (tb[NL80211_TXRATE_HT]) { 8447 if (!ht_rateset_to_mask( 8448 sband, 8449 nla_data(tb[NL80211_TXRATE_HT]), 8450 nla_len(tb[NL80211_TXRATE_HT]), 8451 mask.control[band].ht_mcs)) 8452 return -EINVAL; 8453 } 8454 if (tb[NL80211_TXRATE_VHT]) { 8455 if (!vht_set_mcs_mask( 8456 sband, 8457 nla_data(tb[NL80211_TXRATE_VHT]), 8458 mask.control[band].vht_mcs)) 8459 return -EINVAL; 8460 } 8461 if (tb[NL80211_TXRATE_GI]) { 8462 mask.control[band].gi = 8463 nla_get_u8(tb[NL80211_TXRATE_GI]); 8464 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8465 return -EINVAL; 8466 } 8467 8468 if (mask.control[band].legacy == 0) { 8469 /* don't allow empty legacy rates if HT or VHT 8470 * are not even supported. 8471 */ 8472 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8473 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8474 return -EINVAL; 8475 8476 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8477 if (mask.control[band].ht_mcs[i]) 8478 goto out; 8479 8480 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8481 if (mask.control[band].vht_mcs[i]) 8482 goto out; 8483 8484 /* legacy and mcs rates may not be both empty */ 8485 return -EINVAL; 8486 } 8487 } 8488 8489 out: 8490 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8491 } 8492 8493 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8494 { 8495 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8496 struct wireless_dev *wdev = info->user_ptr[1]; 8497 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8498 8499 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8500 return -EINVAL; 8501 8502 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8503 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8504 8505 switch (wdev->iftype) { 8506 case NL80211_IFTYPE_STATION: 8507 case NL80211_IFTYPE_ADHOC: 8508 case NL80211_IFTYPE_P2P_CLIENT: 8509 case NL80211_IFTYPE_AP: 8510 case NL80211_IFTYPE_AP_VLAN: 8511 case NL80211_IFTYPE_MESH_POINT: 8512 case NL80211_IFTYPE_P2P_GO: 8513 case NL80211_IFTYPE_P2P_DEVICE: 8514 break; 8515 default: 8516 return -EOPNOTSUPP; 8517 } 8518 8519 /* not much point in registering if we can't reply */ 8520 if (!rdev->ops->mgmt_tx) 8521 return -EOPNOTSUPP; 8522 8523 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8524 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8525 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8526 } 8527 8528 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8529 { 8530 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8531 struct wireless_dev *wdev = info->user_ptr[1]; 8532 struct cfg80211_chan_def chandef; 8533 int err; 8534 void *hdr = NULL; 8535 u64 cookie; 8536 struct sk_buff *msg = NULL; 8537 struct cfg80211_mgmt_tx_params params = { 8538 .dont_wait_for_ack = 8539 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8540 }; 8541 8542 if (!info->attrs[NL80211_ATTR_FRAME]) 8543 return -EINVAL; 8544 8545 if (!rdev->ops->mgmt_tx) 8546 return -EOPNOTSUPP; 8547 8548 switch (wdev->iftype) { 8549 case NL80211_IFTYPE_P2P_DEVICE: 8550 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8551 return -EINVAL; 8552 case NL80211_IFTYPE_STATION: 8553 case NL80211_IFTYPE_ADHOC: 8554 case NL80211_IFTYPE_P2P_CLIENT: 8555 case NL80211_IFTYPE_AP: 8556 case NL80211_IFTYPE_AP_VLAN: 8557 case NL80211_IFTYPE_MESH_POINT: 8558 case NL80211_IFTYPE_P2P_GO: 8559 break; 8560 default: 8561 return -EOPNOTSUPP; 8562 } 8563 8564 if (info->attrs[NL80211_ATTR_DURATION]) { 8565 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8566 return -EINVAL; 8567 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8568 8569 /* 8570 * We should wait on the channel for at least a minimum amount 8571 * of time (10ms) but no longer than the driver supports. 8572 */ 8573 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8574 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8575 return -EINVAL; 8576 8577 } 8578 8579 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8580 8581 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8582 return -EINVAL; 8583 8584 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8585 8586 /* get the channel if any has been specified, otherwise pass NULL to 8587 * the driver. The latter will use the current one 8588 */ 8589 chandef.chan = NULL; 8590 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8591 err = nl80211_parse_chandef(rdev, info, &chandef); 8592 if (err) 8593 return err; 8594 } 8595 8596 if (!chandef.chan && params.offchan) 8597 return -EINVAL; 8598 8599 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8600 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8601 8602 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8603 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8604 int i; 8605 8606 if (len % sizeof(u16)) 8607 return -EINVAL; 8608 8609 params.n_csa_offsets = len / sizeof(u16); 8610 params.csa_offsets = 8611 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8612 8613 /* check that all the offsets fit the frame */ 8614 for (i = 0; i < params.n_csa_offsets; i++) { 8615 if (params.csa_offsets[i] >= params.len) 8616 return -EINVAL; 8617 } 8618 } 8619 8620 if (!params.dont_wait_for_ack) { 8621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8622 if (!msg) 8623 return -ENOMEM; 8624 8625 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8626 NL80211_CMD_FRAME); 8627 if (!hdr) { 8628 err = -ENOBUFS; 8629 goto free_msg; 8630 } 8631 } 8632 8633 params.chan = chandef.chan; 8634 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8635 if (err) 8636 goto free_msg; 8637 8638 if (msg) { 8639 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8640 goto nla_put_failure; 8641 8642 genlmsg_end(msg, hdr); 8643 return genlmsg_reply(msg, info); 8644 } 8645 8646 return 0; 8647 8648 nla_put_failure: 8649 err = -ENOBUFS; 8650 free_msg: 8651 nlmsg_free(msg); 8652 return err; 8653 } 8654 8655 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8656 { 8657 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8658 struct wireless_dev *wdev = info->user_ptr[1]; 8659 u64 cookie; 8660 8661 if (!info->attrs[NL80211_ATTR_COOKIE]) 8662 return -EINVAL; 8663 8664 if (!rdev->ops->mgmt_tx_cancel_wait) 8665 return -EOPNOTSUPP; 8666 8667 switch (wdev->iftype) { 8668 case NL80211_IFTYPE_STATION: 8669 case NL80211_IFTYPE_ADHOC: 8670 case NL80211_IFTYPE_P2P_CLIENT: 8671 case NL80211_IFTYPE_AP: 8672 case NL80211_IFTYPE_AP_VLAN: 8673 case NL80211_IFTYPE_P2P_GO: 8674 case NL80211_IFTYPE_P2P_DEVICE: 8675 break; 8676 default: 8677 return -EOPNOTSUPP; 8678 } 8679 8680 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8681 8682 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8683 } 8684 8685 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8686 { 8687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8688 struct wireless_dev *wdev; 8689 struct net_device *dev = info->user_ptr[1]; 8690 u8 ps_state; 8691 bool state; 8692 int err; 8693 8694 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8695 return -EINVAL; 8696 8697 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8698 8699 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8700 return -EINVAL; 8701 8702 wdev = dev->ieee80211_ptr; 8703 8704 if (!rdev->ops->set_power_mgmt) 8705 return -EOPNOTSUPP; 8706 8707 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8708 8709 if (state == wdev->ps) 8710 return 0; 8711 8712 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8713 if (!err) 8714 wdev->ps = state; 8715 return err; 8716 } 8717 8718 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8719 { 8720 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8721 enum nl80211_ps_state ps_state; 8722 struct wireless_dev *wdev; 8723 struct net_device *dev = info->user_ptr[1]; 8724 struct sk_buff *msg; 8725 void *hdr; 8726 int err; 8727 8728 wdev = dev->ieee80211_ptr; 8729 8730 if (!rdev->ops->set_power_mgmt) 8731 return -EOPNOTSUPP; 8732 8733 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8734 if (!msg) 8735 return -ENOMEM; 8736 8737 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8738 NL80211_CMD_GET_POWER_SAVE); 8739 if (!hdr) { 8740 err = -ENOBUFS; 8741 goto free_msg; 8742 } 8743 8744 if (wdev->ps) 8745 ps_state = NL80211_PS_ENABLED; 8746 else 8747 ps_state = NL80211_PS_DISABLED; 8748 8749 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8750 goto nla_put_failure; 8751 8752 genlmsg_end(msg, hdr); 8753 return genlmsg_reply(msg, info); 8754 8755 nla_put_failure: 8756 err = -ENOBUFS; 8757 free_msg: 8758 nlmsg_free(msg); 8759 return err; 8760 } 8761 8762 static const struct nla_policy 8763 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8764 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8765 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8766 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8767 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8768 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8769 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8770 }; 8771 8772 static int nl80211_set_cqm_txe(struct genl_info *info, 8773 u32 rate, u32 pkts, u32 intvl) 8774 { 8775 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8776 struct net_device *dev = info->user_ptr[1]; 8777 struct wireless_dev *wdev = dev->ieee80211_ptr; 8778 8779 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8780 return -EINVAL; 8781 8782 if (!rdev->ops->set_cqm_txe_config) 8783 return -EOPNOTSUPP; 8784 8785 if (wdev->iftype != NL80211_IFTYPE_STATION && 8786 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8787 return -EOPNOTSUPP; 8788 8789 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8790 } 8791 8792 static int nl80211_set_cqm_rssi(struct genl_info *info, 8793 s32 threshold, u32 hysteresis) 8794 { 8795 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8796 struct net_device *dev = info->user_ptr[1]; 8797 struct wireless_dev *wdev = dev->ieee80211_ptr; 8798 8799 if (threshold > 0) 8800 return -EINVAL; 8801 8802 /* disabling - hysteresis should also be zero then */ 8803 if (threshold == 0) 8804 hysteresis = 0; 8805 8806 if (!rdev->ops->set_cqm_rssi_config) 8807 return -EOPNOTSUPP; 8808 8809 if (wdev->iftype != NL80211_IFTYPE_STATION && 8810 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8811 return -EOPNOTSUPP; 8812 8813 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8814 } 8815 8816 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8817 { 8818 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8819 struct nlattr *cqm; 8820 int err; 8821 8822 cqm = info->attrs[NL80211_ATTR_CQM]; 8823 if (!cqm) 8824 return -EINVAL; 8825 8826 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8827 nl80211_attr_cqm_policy); 8828 if (err) 8829 return err; 8830 8831 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8832 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8833 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8834 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8835 8836 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8837 } 8838 8839 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8840 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8841 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8842 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8843 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8844 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8845 8846 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8847 } 8848 8849 return -EINVAL; 8850 } 8851 8852 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8853 { 8854 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8855 struct net_device *dev = info->user_ptr[1]; 8856 struct ocb_setup setup = {}; 8857 int err; 8858 8859 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8860 if (err) 8861 return err; 8862 8863 return cfg80211_join_ocb(rdev, dev, &setup); 8864 } 8865 8866 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8867 { 8868 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8869 struct net_device *dev = info->user_ptr[1]; 8870 8871 return cfg80211_leave_ocb(rdev, dev); 8872 } 8873 8874 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8875 { 8876 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8877 struct net_device *dev = info->user_ptr[1]; 8878 struct mesh_config cfg; 8879 struct mesh_setup setup; 8880 int err; 8881 8882 /* start with default */ 8883 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8884 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8885 8886 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8887 /* and parse parameters if given */ 8888 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8889 if (err) 8890 return err; 8891 } 8892 8893 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8894 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8895 return -EINVAL; 8896 8897 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8898 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8899 8900 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8901 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8902 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8903 return -EINVAL; 8904 8905 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8906 setup.beacon_interval = 8907 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8908 if (setup.beacon_interval < 10 || 8909 setup.beacon_interval > 10000) 8910 return -EINVAL; 8911 } 8912 8913 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8914 setup.dtim_period = 8915 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8916 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8917 return -EINVAL; 8918 } 8919 8920 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8921 /* parse additional setup parameters if given */ 8922 err = nl80211_parse_mesh_setup(info, &setup); 8923 if (err) 8924 return err; 8925 } 8926 8927 if (setup.user_mpm) 8928 cfg.auto_open_plinks = false; 8929 8930 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8931 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8932 if (err) 8933 return err; 8934 } else { 8935 /* cfg80211_join_mesh() will sort it out */ 8936 setup.chandef.chan = NULL; 8937 } 8938 8939 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8940 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8941 int n_rates = 8942 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8943 struct ieee80211_supported_band *sband; 8944 8945 if (!setup.chandef.chan) 8946 return -EINVAL; 8947 8948 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8949 8950 err = ieee80211_get_ratemask(sband, rates, n_rates, 8951 &setup.basic_rates); 8952 if (err) 8953 return err; 8954 } 8955 8956 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8957 } 8958 8959 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8960 { 8961 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8962 struct net_device *dev = info->user_ptr[1]; 8963 8964 return cfg80211_leave_mesh(rdev, dev); 8965 } 8966 8967 #ifdef CONFIG_PM 8968 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8969 struct cfg80211_registered_device *rdev) 8970 { 8971 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8972 struct nlattr *nl_pats, *nl_pat; 8973 int i, pat_len; 8974 8975 if (!wowlan->n_patterns) 8976 return 0; 8977 8978 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8979 if (!nl_pats) 8980 return -ENOBUFS; 8981 8982 for (i = 0; i < wowlan->n_patterns; i++) { 8983 nl_pat = nla_nest_start(msg, i + 1); 8984 if (!nl_pat) 8985 return -ENOBUFS; 8986 pat_len = wowlan->patterns[i].pattern_len; 8987 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8988 wowlan->patterns[i].mask) || 8989 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8990 wowlan->patterns[i].pattern) || 8991 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8992 wowlan->patterns[i].pkt_offset)) 8993 return -ENOBUFS; 8994 nla_nest_end(msg, nl_pat); 8995 } 8996 nla_nest_end(msg, nl_pats); 8997 8998 return 0; 8999 } 9000 9001 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 9002 struct cfg80211_wowlan_tcp *tcp) 9003 { 9004 struct nlattr *nl_tcp; 9005 9006 if (!tcp) 9007 return 0; 9008 9009 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 9010 if (!nl_tcp) 9011 return -ENOBUFS; 9012 9013 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 9014 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 9015 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 9016 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 9017 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 9018 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 9019 tcp->payload_len, tcp->payload) || 9020 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 9021 tcp->data_interval) || 9022 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 9023 tcp->wake_len, tcp->wake_data) || 9024 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 9025 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 9026 return -ENOBUFS; 9027 9028 if (tcp->payload_seq.len && 9029 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 9030 sizeof(tcp->payload_seq), &tcp->payload_seq)) 9031 return -ENOBUFS; 9032 9033 if (tcp->payload_tok.len && 9034 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 9035 sizeof(tcp->payload_tok) + tcp->tokens_size, 9036 &tcp->payload_tok)) 9037 return -ENOBUFS; 9038 9039 nla_nest_end(msg, nl_tcp); 9040 9041 return 0; 9042 } 9043 9044 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 9045 struct cfg80211_sched_scan_request *req) 9046 { 9047 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 9048 int i; 9049 9050 if (!req) 9051 return 0; 9052 9053 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 9054 if (!nd) 9055 return -ENOBUFS; 9056 9057 if (req->n_scan_plans == 1 && 9058 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 9059 req->scan_plans[0].interval * 1000)) 9060 return -ENOBUFS; 9061 9062 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 9063 return -ENOBUFS; 9064 9065 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9066 if (!freqs) 9067 return -ENOBUFS; 9068 9069 for (i = 0; i < req->n_channels; i++) 9070 nla_put_u32(msg, i, req->channels[i]->center_freq); 9071 9072 nla_nest_end(msg, freqs); 9073 9074 if (req->n_match_sets) { 9075 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 9076 for (i = 0; i < req->n_match_sets; i++) { 9077 match = nla_nest_start(msg, i); 9078 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 9079 req->match_sets[i].ssid.ssid_len, 9080 req->match_sets[i].ssid.ssid); 9081 nla_nest_end(msg, match); 9082 } 9083 nla_nest_end(msg, matches); 9084 } 9085 9086 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 9087 if (!scan_plans) 9088 return -ENOBUFS; 9089 9090 for (i = 0; i < req->n_scan_plans; i++) { 9091 scan_plan = nla_nest_start(msg, i + 1); 9092 if (!scan_plan || 9093 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 9094 req->scan_plans[i].interval) || 9095 (req->scan_plans[i].iterations && 9096 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 9097 req->scan_plans[i].iterations))) 9098 return -ENOBUFS; 9099 nla_nest_end(msg, scan_plan); 9100 } 9101 nla_nest_end(msg, scan_plans); 9102 9103 nla_nest_end(msg, nd); 9104 9105 return 0; 9106 } 9107 9108 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 9109 { 9110 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9111 struct sk_buff *msg; 9112 void *hdr; 9113 u32 size = NLMSG_DEFAULT_SIZE; 9114 9115 if (!rdev->wiphy.wowlan) 9116 return -EOPNOTSUPP; 9117 9118 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 9119 /* adjust size to have room for all the data */ 9120 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 9121 rdev->wiphy.wowlan_config->tcp->payload_len + 9122 rdev->wiphy.wowlan_config->tcp->wake_len + 9123 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 9124 } 9125 9126 msg = nlmsg_new(size, GFP_KERNEL); 9127 if (!msg) 9128 return -ENOMEM; 9129 9130 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9131 NL80211_CMD_GET_WOWLAN); 9132 if (!hdr) 9133 goto nla_put_failure; 9134 9135 if (rdev->wiphy.wowlan_config) { 9136 struct nlattr *nl_wowlan; 9137 9138 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 9139 if (!nl_wowlan) 9140 goto nla_put_failure; 9141 9142 if ((rdev->wiphy.wowlan_config->any && 9143 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 9144 (rdev->wiphy.wowlan_config->disconnect && 9145 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 9146 (rdev->wiphy.wowlan_config->magic_pkt && 9147 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 9148 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 9149 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 9150 (rdev->wiphy.wowlan_config->eap_identity_req && 9151 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 9152 (rdev->wiphy.wowlan_config->four_way_handshake && 9153 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 9154 (rdev->wiphy.wowlan_config->rfkill_release && 9155 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 9156 goto nla_put_failure; 9157 9158 if (nl80211_send_wowlan_patterns(msg, rdev)) 9159 goto nla_put_failure; 9160 9161 if (nl80211_send_wowlan_tcp(msg, 9162 rdev->wiphy.wowlan_config->tcp)) 9163 goto nla_put_failure; 9164 9165 if (nl80211_send_wowlan_nd( 9166 msg, 9167 rdev->wiphy.wowlan_config->nd_config)) 9168 goto nla_put_failure; 9169 9170 nla_nest_end(msg, nl_wowlan); 9171 } 9172 9173 genlmsg_end(msg, hdr); 9174 return genlmsg_reply(msg, info); 9175 9176 nla_put_failure: 9177 nlmsg_free(msg); 9178 return -ENOBUFS; 9179 } 9180 9181 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 9182 struct nlattr *attr, 9183 struct cfg80211_wowlan *trig) 9184 { 9185 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 9186 struct cfg80211_wowlan_tcp *cfg; 9187 struct nl80211_wowlan_tcp_data_token *tok = NULL; 9188 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 9189 u32 size; 9190 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 9191 int err, port; 9192 9193 if (!rdev->wiphy.wowlan->tcp) 9194 return -EINVAL; 9195 9196 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 9197 nla_data(attr), nla_len(attr), 9198 nl80211_wowlan_tcp_policy); 9199 if (err) 9200 return err; 9201 9202 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 9203 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 9204 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 9205 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 9206 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 9207 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 9208 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 9209 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 9210 return -EINVAL; 9211 9212 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 9213 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 9214 return -EINVAL; 9215 9216 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 9217 rdev->wiphy.wowlan->tcp->data_interval_max || 9218 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 9219 return -EINVAL; 9220 9221 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 9222 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 9223 return -EINVAL; 9224 9225 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 9226 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 9227 return -EINVAL; 9228 9229 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 9230 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9231 9232 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9233 tokens_size = tokln - sizeof(*tok); 9234 9235 if (!tok->len || tokens_size % tok->len) 9236 return -EINVAL; 9237 if (!rdev->wiphy.wowlan->tcp->tok) 9238 return -EINVAL; 9239 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 9240 return -EINVAL; 9241 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 9242 return -EINVAL; 9243 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 9244 return -EINVAL; 9245 if (tok->offset + tok->len > data_size) 9246 return -EINVAL; 9247 } 9248 9249 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 9250 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 9251 if (!rdev->wiphy.wowlan->tcp->seq) 9252 return -EINVAL; 9253 if (seq->len == 0 || seq->len > 4) 9254 return -EINVAL; 9255 if (seq->len + seq->offset > data_size) 9256 return -EINVAL; 9257 } 9258 9259 size = sizeof(*cfg); 9260 size += data_size; 9261 size += wake_size + wake_mask_size; 9262 size += tokens_size; 9263 9264 cfg = kzalloc(size, GFP_KERNEL); 9265 if (!cfg) 9266 return -ENOMEM; 9267 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 9268 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 9269 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 9270 ETH_ALEN); 9271 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9272 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9273 else 9274 port = 0; 9275 #ifdef CONFIG_INET 9276 /* allocate a socket and port for it and use it */ 9277 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9278 IPPROTO_TCP, &cfg->sock, 1); 9279 if (err) { 9280 kfree(cfg); 9281 return err; 9282 } 9283 if (inet_csk_get_port(cfg->sock->sk, port)) { 9284 sock_release(cfg->sock); 9285 kfree(cfg); 9286 return -EADDRINUSE; 9287 } 9288 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9289 #else 9290 if (!port) { 9291 kfree(cfg); 9292 return -EINVAL; 9293 } 9294 cfg->src_port = port; 9295 #endif 9296 9297 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9298 cfg->payload_len = data_size; 9299 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9300 memcpy((void *)cfg->payload, 9301 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9302 data_size); 9303 if (seq) 9304 cfg->payload_seq = *seq; 9305 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9306 cfg->wake_len = wake_size; 9307 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9308 memcpy((void *)cfg->wake_data, 9309 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9310 wake_size); 9311 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9312 data_size + wake_size; 9313 memcpy((void *)cfg->wake_mask, 9314 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9315 wake_mask_size); 9316 if (tok) { 9317 cfg->tokens_size = tokens_size; 9318 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9319 } 9320 9321 trig->tcp = cfg; 9322 9323 return 0; 9324 } 9325 9326 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9327 const struct wiphy_wowlan_support *wowlan, 9328 struct nlattr *attr, 9329 struct cfg80211_wowlan *trig) 9330 { 9331 struct nlattr **tb; 9332 int err; 9333 9334 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9335 if (!tb) 9336 return -ENOMEM; 9337 9338 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9339 err = -EOPNOTSUPP; 9340 goto out; 9341 } 9342 9343 err = nla_parse(tb, NL80211_ATTR_MAX, 9344 nla_data(attr), nla_len(attr), 9345 nl80211_policy); 9346 if (err) 9347 goto out; 9348 9349 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9350 err = PTR_ERR_OR_ZERO(trig->nd_config); 9351 if (err) 9352 trig->nd_config = NULL; 9353 9354 out: 9355 kfree(tb); 9356 return err; 9357 } 9358 9359 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9360 { 9361 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9362 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9363 struct cfg80211_wowlan new_triggers = {}; 9364 struct cfg80211_wowlan *ntrig; 9365 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9366 int err, i; 9367 bool prev_enabled = rdev->wiphy.wowlan_config; 9368 bool regular = false; 9369 9370 if (!wowlan) 9371 return -EOPNOTSUPP; 9372 9373 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9374 cfg80211_rdev_free_wowlan(rdev); 9375 rdev->wiphy.wowlan_config = NULL; 9376 goto set_wakeup; 9377 } 9378 9379 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9380 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9381 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9382 nl80211_wowlan_policy); 9383 if (err) 9384 return err; 9385 9386 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9387 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9388 return -EINVAL; 9389 new_triggers.any = true; 9390 } 9391 9392 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9393 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9394 return -EINVAL; 9395 new_triggers.disconnect = true; 9396 regular = true; 9397 } 9398 9399 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9400 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9401 return -EINVAL; 9402 new_triggers.magic_pkt = true; 9403 regular = true; 9404 } 9405 9406 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9407 return -EINVAL; 9408 9409 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9410 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9411 return -EINVAL; 9412 new_triggers.gtk_rekey_failure = true; 9413 regular = true; 9414 } 9415 9416 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9417 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9418 return -EINVAL; 9419 new_triggers.eap_identity_req = true; 9420 regular = true; 9421 } 9422 9423 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9424 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9425 return -EINVAL; 9426 new_triggers.four_way_handshake = true; 9427 regular = true; 9428 } 9429 9430 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9431 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9432 return -EINVAL; 9433 new_triggers.rfkill_release = true; 9434 regular = true; 9435 } 9436 9437 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9438 struct nlattr *pat; 9439 int n_patterns = 0; 9440 int rem, pat_len, mask_len, pkt_offset; 9441 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9442 9443 regular = true; 9444 9445 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9446 rem) 9447 n_patterns++; 9448 if (n_patterns > wowlan->n_patterns) 9449 return -EINVAL; 9450 9451 new_triggers.patterns = kcalloc(n_patterns, 9452 sizeof(new_triggers.patterns[0]), 9453 GFP_KERNEL); 9454 if (!new_triggers.patterns) 9455 return -ENOMEM; 9456 9457 new_triggers.n_patterns = n_patterns; 9458 i = 0; 9459 9460 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9461 rem) { 9462 u8 *mask_pat; 9463 9464 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9465 nla_len(pat), NULL); 9466 err = -EINVAL; 9467 if (!pat_tb[NL80211_PKTPAT_MASK] || 9468 !pat_tb[NL80211_PKTPAT_PATTERN]) 9469 goto error; 9470 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9471 mask_len = DIV_ROUND_UP(pat_len, 8); 9472 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9473 goto error; 9474 if (pat_len > wowlan->pattern_max_len || 9475 pat_len < wowlan->pattern_min_len) 9476 goto error; 9477 9478 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9479 pkt_offset = 0; 9480 else 9481 pkt_offset = nla_get_u32( 9482 pat_tb[NL80211_PKTPAT_OFFSET]); 9483 if (pkt_offset > wowlan->max_pkt_offset) 9484 goto error; 9485 new_triggers.patterns[i].pkt_offset = pkt_offset; 9486 9487 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9488 if (!mask_pat) { 9489 err = -ENOMEM; 9490 goto error; 9491 } 9492 new_triggers.patterns[i].mask = mask_pat; 9493 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9494 mask_len); 9495 mask_pat += mask_len; 9496 new_triggers.patterns[i].pattern = mask_pat; 9497 new_triggers.patterns[i].pattern_len = pat_len; 9498 memcpy(mask_pat, 9499 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9500 pat_len); 9501 i++; 9502 } 9503 } 9504 9505 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9506 regular = true; 9507 err = nl80211_parse_wowlan_tcp( 9508 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9509 &new_triggers); 9510 if (err) 9511 goto error; 9512 } 9513 9514 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9515 regular = true; 9516 err = nl80211_parse_wowlan_nd( 9517 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9518 &new_triggers); 9519 if (err) 9520 goto error; 9521 } 9522 9523 /* The 'any' trigger means the device continues operating more or less 9524 * as in its normal operation mode and wakes up the host on most of the 9525 * normal interrupts (like packet RX, ...) 9526 * It therefore makes little sense to combine with the more constrained 9527 * wakeup trigger modes. 9528 */ 9529 if (new_triggers.any && regular) { 9530 err = -EINVAL; 9531 goto error; 9532 } 9533 9534 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9535 if (!ntrig) { 9536 err = -ENOMEM; 9537 goto error; 9538 } 9539 cfg80211_rdev_free_wowlan(rdev); 9540 rdev->wiphy.wowlan_config = ntrig; 9541 9542 set_wakeup: 9543 if (rdev->ops->set_wakeup && 9544 prev_enabled != !!rdev->wiphy.wowlan_config) 9545 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9546 9547 return 0; 9548 error: 9549 for (i = 0; i < new_triggers.n_patterns; i++) 9550 kfree(new_triggers.patterns[i].mask); 9551 kfree(new_triggers.patterns); 9552 if (new_triggers.tcp && new_triggers.tcp->sock) 9553 sock_release(new_triggers.tcp->sock); 9554 kfree(new_triggers.tcp); 9555 kfree(new_triggers.nd_config); 9556 return err; 9557 } 9558 #endif 9559 9560 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9561 struct cfg80211_registered_device *rdev) 9562 { 9563 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9564 int i, j, pat_len; 9565 struct cfg80211_coalesce_rules *rule; 9566 9567 if (!rdev->coalesce->n_rules) 9568 return 0; 9569 9570 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9571 if (!nl_rules) 9572 return -ENOBUFS; 9573 9574 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9575 nl_rule = nla_nest_start(msg, i + 1); 9576 if (!nl_rule) 9577 return -ENOBUFS; 9578 9579 rule = &rdev->coalesce->rules[i]; 9580 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9581 rule->delay)) 9582 return -ENOBUFS; 9583 9584 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9585 rule->condition)) 9586 return -ENOBUFS; 9587 9588 nl_pats = nla_nest_start(msg, 9589 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9590 if (!nl_pats) 9591 return -ENOBUFS; 9592 9593 for (j = 0; j < rule->n_patterns; j++) { 9594 nl_pat = nla_nest_start(msg, j + 1); 9595 if (!nl_pat) 9596 return -ENOBUFS; 9597 pat_len = rule->patterns[j].pattern_len; 9598 if (nla_put(msg, NL80211_PKTPAT_MASK, 9599 DIV_ROUND_UP(pat_len, 8), 9600 rule->patterns[j].mask) || 9601 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9602 rule->patterns[j].pattern) || 9603 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9604 rule->patterns[j].pkt_offset)) 9605 return -ENOBUFS; 9606 nla_nest_end(msg, nl_pat); 9607 } 9608 nla_nest_end(msg, nl_pats); 9609 nla_nest_end(msg, nl_rule); 9610 } 9611 nla_nest_end(msg, nl_rules); 9612 9613 return 0; 9614 } 9615 9616 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9617 { 9618 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9619 struct sk_buff *msg; 9620 void *hdr; 9621 9622 if (!rdev->wiphy.coalesce) 9623 return -EOPNOTSUPP; 9624 9625 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9626 if (!msg) 9627 return -ENOMEM; 9628 9629 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9630 NL80211_CMD_GET_COALESCE); 9631 if (!hdr) 9632 goto nla_put_failure; 9633 9634 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9635 goto nla_put_failure; 9636 9637 genlmsg_end(msg, hdr); 9638 return genlmsg_reply(msg, info); 9639 9640 nla_put_failure: 9641 nlmsg_free(msg); 9642 return -ENOBUFS; 9643 } 9644 9645 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9646 { 9647 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9648 int i, j; 9649 struct cfg80211_coalesce_rules *rule; 9650 9651 if (!coalesce) 9652 return; 9653 9654 for (i = 0; i < coalesce->n_rules; i++) { 9655 rule = &coalesce->rules[i]; 9656 for (j = 0; j < rule->n_patterns; j++) 9657 kfree(rule->patterns[j].mask); 9658 kfree(rule->patterns); 9659 } 9660 kfree(coalesce->rules); 9661 kfree(coalesce); 9662 rdev->coalesce = NULL; 9663 } 9664 9665 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9666 struct nlattr *rule, 9667 struct cfg80211_coalesce_rules *new_rule) 9668 { 9669 int err, i; 9670 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9671 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9672 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9673 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9674 9675 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9676 nla_len(rule), nl80211_coalesce_policy); 9677 if (err) 9678 return err; 9679 9680 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9681 new_rule->delay = 9682 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9683 if (new_rule->delay > coalesce->max_delay) 9684 return -EINVAL; 9685 9686 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9687 new_rule->condition = 9688 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9689 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9690 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9691 return -EINVAL; 9692 9693 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9694 return -EINVAL; 9695 9696 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9697 rem) 9698 n_patterns++; 9699 if (n_patterns > coalesce->n_patterns) 9700 return -EINVAL; 9701 9702 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9703 GFP_KERNEL); 9704 if (!new_rule->patterns) 9705 return -ENOMEM; 9706 9707 new_rule->n_patterns = n_patterns; 9708 i = 0; 9709 9710 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9711 rem) { 9712 u8 *mask_pat; 9713 9714 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9715 nla_len(pat), NULL); 9716 if (!pat_tb[NL80211_PKTPAT_MASK] || 9717 !pat_tb[NL80211_PKTPAT_PATTERN]) 9718 return -EINVAL; 9719 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9720 mask_len = DIV_ROUND_UP(pat_len, 8); 9721 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9722 return -EINVAL; 9723 if (pat_len > coalesce->pattern_max_len || 9724 pat_len < coalesce->pattern_min_len) 9725 return -EINVAL; 9726 9727 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9728 pkt_offset = 0; 9729 else 9730 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9731 if (pkt_offset > coalesce->max_pkt_offset) 9732 return -EINVAL; 9733 new_rule->patterns[i].pkt_offset = pkt_offset; 9734 9735 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9736 if (!mask_pat) 9737 return -ENOMEM; 9738 9739 new_rule->patterns[i].mask = mask_pat; 9740 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9741 mask_len); 9742 9743 mask_pat += mask_len; 9744 new_rule->patterns[i].pattern = mask_pat; 9745 new_rule->patterns[i].pattern_len = pat_len; 9746 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9747 pat_len); 9748 i++; 9749 } 9750 9751 return 0; 9752 } 9753 9754 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9755 { 9756 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9757 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9758 struct cfg80211_coalesce new_coalesce = {}; 9759 struct cfg80211_coalesce *n_coalesce; 9760 int err, rem_rule, n_rules = 0, i, j; 9761 struct nlattr *rule; 9762 struct cfg80211_coalesce_rules *tmp_rule; 9763 9764 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9765 return -EOPNOTSUPP; 9766 9767 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9768 cfg80211_rdev_free_coalesce(rdev); 9769 rdev_set_coalesce(rdev, NULL); 9770 return 0; 9771 } 9772 9773 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9774 rem_rule) 9775 n_rules++; 9776 if (n_rules > coalesce->n_rules) 9777 return -EINVAL; 9778 9779 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9780 GFP_KERNEL); 9781 if (!new_coalesce.rules) 9782 return -ENOMEM; 9783 9784 new_coalesce.n_rules = n_rules; 9785 i = 0; 9786 9787 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9788 rem_rule) { 9789 err = nl80211_parse_coalesce_rule(rdev, rule, 9790 &new_coalesce.rules[i]); 9791 if (err) 9792 goto error; 9793 9794 i++; 9795 } 9796 9797 err = rdev_set_coalesce(rdev, &new_coalesce); 9798 if (err) 9799 goto error; 9800 9801 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9802 if (!n_coalesce) { 9803 err = -ENOMEM; 9804 goto error; 9805 } 9806 cfg80211_rdev_free_coalesce(rdev); 9807 rdev->coalesce = n_coalesce; 9808 9809 return 0; 9810 error: 9811 for (i = 0; i < new_coalesce.n_rules; i++) { 9812 tmp_rule = &new_coalesce.rules[i]; 9813 for (j = 0; j < tmp_rule->n_patterns; j++) 9814 kfree(tmp_rule->patterns[j].mask); 9815 kfree(tmp_rule->patterns); 9816 } 9817 kfree(new_coalesce.rules); 9818 9819 return err; 9820 } 9821 9822 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9823 { 9824 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9825 struct net_device *dev = info->user_ptr[1]; 9826 struct wireless_dev *wdev = dev->ieee80211_ptr; 9827 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9828 struct cfg80211_gtk_rekey_data rekey_data; 9829 int err; 9830 9831 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9832 return -EINVAL; 9833 9834 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9835 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9836 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9837 nl80211_rekey_policy); 9838 if (err) 9839 return err; 9840 9841 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9842 return -ERANGE; 9843 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9844 return -ERANGE; 9845 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9846 return -ERANGE; 9847 9848 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9849 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9850 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9851 9852 wdev_lock(wdev); 9853 if (!wdev->current_bss) { 9854 err = -ENOTCONN; 9855 goto out; 9856 } 9857 9858 if (!rdev->ops->set_rekey_data) { 9859 err = -EOPNOTSUPP; 9860 goto out; 9861 } 9862 9863 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9864 out: 9865 wdev_unlock(wdev); 9866 return err; 9867 } 9868 9869 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9870 struct genl_info *info) 9871 { 9872 struct net_device *dev = info->user_ptr[1]; 9873 struct wireless_dev *wdev = dev->ieee80211_ptr; 9874 9875 if (wdev->iftype != NL80211_IFTYPE_AP && 9876 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9877 return -EINVAL; 9878 9879 if (wdev->ap_unexpected_nlportid) 9880 return -EBUSY; 9881 9882 wdev->ap_unexpected_nlportid = info->snd_portid; 9883 return 0; 9884 } 9885 9886 static int nl80211_probe_client(struct sk_buff *skb, 9887 struct genl_info *info) 9888 { 9889 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9890 struct net_device *dev = info->user_ptr[1]; 9891 struct wireless_dev *wdev = dev->ieee80211_ptr; 9892 struct sk_buff *msg; 9893 void *hdr; 9894 const u8 *addr; 9895 u64 cookie; 9896 int err; 9897 9898 if (wdev->iftype != NL80211_IFTYPE_AP && 9899 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9900 return -EOPNOTSUPP; 9901 9902 if (!info->attrs[NL80211_ATTR_MAC]) 9903 return -EINVAL; 9904 9905 if (!rdev->ops->probe_client) 9906 return -EOPNOTSUPP; 9907 9908 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9909 if (!msg) 9910 return -ENOMEM; 9911 9912 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9913 NL80211_CMD_PROBE_CLIENT); 9914 if (!hdr) { 9915 err = -ENOBUFS; 9916 goto free_msg; 9917 } 9918 9919 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9920 9921 err = rdev_probe_client(rdev, dev, addr, &cookie); 9922 if (err) 9923 goto free_msg; 9924 9925 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9926 goto nla_put_failure; 9927 9928 genlmsg_end(msg, hdr); 9929 9930 return genlmsg_reply(msg, info); 9931 9932 nla_put_failure: 9933 err = -ENOBUFS; 9934 free_msg: 9935 nlmsg_free(msg); 9936 return err; 9937 } 9938 9939 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9940 { 9941 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9942 struct cfg80211_beacon_registration *reg, *nreg; 9943 int rv; 9944 9945 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9946 return -EOPNOTSUPP; 9947 9948 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9949 if (!nreg) 9950 return -ENOMEM; 9951 9952 /* First, check if already registered. */ 9953 spin_lock_bh(&rdev->beacon_registrations_lock); 9954 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9955 if (reg->nlportid == info->snd_portid) { 9956 rv = -EALREADY; 9957 goto out_err; 9958 } 9959 } 9960 /* Add it to the list */ 9961 nreg->nlportid = info->snd_portid; 9962 list_add(&nreg->list, &rdev->beacon_registrations); 9963 9964 spin_unlock_bh(&rdev->beacon_registrations_lock); 9965 9966 return 0; 9967 out_err: 9968 spin_unlock_bh(&rdev->beacon_registrations_lock); 9969 kfree(nreg); 9970 return rv; 9971 } 9972 9973 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9974 { 9975 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9976 struct wireless_dev *wdev = info->user_ptr[1]; 9977 int err; 9978 9979 if (!rdev->ops->start_p2p_device) 9980 return -EOPNOTSUPP; 9981 9982 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9983 return -EOPNOTSUPP; 9984 9985 if (wdev->p2p_started) 9986 return 0; 9987 9988 if (rfkill_blocked(rdev->rfkill)) 9989 return -ERFKILL; 9990 9991 err = rdev_start_p2p_device(rdev, wdev); 9992 if (err) 9993 return err; 9994 9995 wdev->p2p_started = true; 9996 rdev->opencount++; 9997 9998 return 0; 9999 } 10000 10001 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 10002 { 10003 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10004 struct wireless_dev *wdev = info->user_ptr[1]; 10005 10006 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 10007 return -EOPNOTSUPP; 10008 10009 if (!rdev->ops->stop_p2p_device) 10010 return -EOPNOTSUPP; 10011 10012 cfg80211_stop_p2p_device(rdev, wdev); 10013 10014 return 0; 10015 } 10016 10017 static int nl80211_get_protocol_features(struct sk_buff *skb, 10018 struct genl_info *info) 10019 { 10020 void *hdr; 10021 struct sk_buff *msg; 10022 10023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10024 if (!msg) 10025 return -ENOMEM; 10026 10027 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10028 NL80211_CMD_GET_PROTOCOL_FEATURES); 10029 if (!hdr) 10030 goto nla_put_failure; 10031 10032 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 10033 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 10034 goto nla_put_failure; 10035 10036 genlmsg_end(msg, hdr); 10037 return genlmsg_reply(msg, info); 10038 10039 nla_put_failure: 10040 kfree_skb(msg); 10041 return -ENOBUFS; 10042 } 10043 10044 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 10045 { 10046 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10047 struct cfg80211_update_ft_ies_params ft_params; 10048 struct net_device *dev = info->user_ptr[1]; 10049 10050 if (!rdev->ops->update_ft_ies) 10051 return -EOPNOTSUPP; 10052 10053 if (!info->attrs[NL80211_ATTR_MDID] || 10054 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 10055 return -EINVAL; 10056 10057 memset(&ft_params, 0, sizeof(ft_params)); 10058 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 10059 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10060 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10061 10062 return rdev_update_ft_ies(rdev, dev, &ft_params); 10063 } 10064 10065 static int nl80211_crit_protocol_start(struct sk_buff *skb, 10066 struct genl_info *info) 10067 { 10068 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10069 struct wireless_dev *wdev = info->user_ptr[1]; 10070 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 10071 u16 duration; 10072 int ret; 10073 10074 if (!rdev->ops->crit_proto_start) 10075 return -EOPNOTSUPP; 10076 10077 if (WARN_ON(!rdev->ops->crit_proto_stop)) 10078 return -EINVAL; 10079 10080 if (rdev->crit_proto_nlportid) 10081 return -EBUSY; 10082 10083 /* determine protocol if provided */ 10084 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 10085 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 10086 10087 if (proto >= NUM_NL80211_CRIT_PROTO) 10088 return -EINVAL; 10089 10090 /* timeout must be provided */ 10091 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 10092 return -EINVAL; 10093 10094 duration = 10095 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 10096 10097 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 10098 return -ERANGE; 10099 10100 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 10101 if (!ret) 10102 rdev->crit_proto_nlportid = info->snd_portid; 10103 10104 return ret; 10105 } 10106 10107 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 10108 struct genl_info *info) 10109 { 10110 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10111 struct wireless_dev *wdev = info->user_ptr[1]; 10112 10113 if (!rdev->ops->crit_proto_stop) 10114 return -EOPNOTSUPP; 10115 10116 if (rdev->crit_proto_nlportid) { 10117 rdev->crit_proto_nlportid = 0; 10118 rdev_crit_proto_stop(rdev, wdev); 10119 } 10120 return 0; 10121 } 10122 10123 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 10124 { 10125 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10126 struct wireless_dev *wdev = 10127 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 10128 int i, err; 10129 u32 vid, subcmd; 10130 10131 if (!rdev->wiphy.vendor_commands) 10132 return -EOPNOTSUPP; 10133 10134 if (IS_ERR(wdev)) { 10135 err = PTR_ERR(wdev); 10136 if (err != -EINVAL) 10137 return err; 10138 wdev = NULL; 10139 } else if (wdev->wiphy != &rdev->wiphy) { 10140 return -EINVAL; 10141 } 10142 10143 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 10144 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 10145 return -EINVAL; 10146 10147 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 10148 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 10149 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 10150 const struct wiphy_vendor_command *vcmd; 10151 void *data = NULL; 10152 int len = 0; 10153 10154 vcmd = &rdev->wiphy.vendor_commands[i]; 10155 10156 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10157 continue; 10158 10159 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10160 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10161 if (!wdev) 10162 return -EINVAL; 10163 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10164 !wdev->netdev) 10165 return -EINVAL; 10166 10167 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10168 if (wdev->netdev && 10169 !netif_running(wdev->netdev)) 10170 return -ENETDOWN; 10171 if (!wdev->netdev && !wdev->p2p_started) 10172 return -ENETDOWN; 10173 } 10174 10175 if (!vcmd->doit) 10176 return -EOPNOTSUPP; 10177 } else { 10178 wdev = NULL; 10179 } 10180 10181 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 10182 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10183 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10184 } 10185 10186 rdev->cur_cmd_info = info; 10187 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 10188 data, len); 10189 rdev->cur_cmd_info = NULL; 10190 return err; 10191 } 10192 10193 return -EOPNOTSUPP; 10194 } 10195 10196 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 10197 struct netlink_callback *cb, 10198 struct cfg80211_registered_device **rdev, 10199 struct wireless_dev **wdev) 10200 { 10201 u32 vid, subcmd; 10202 unsigned int i; 10203 int vcmd_idx = -1; 10204 int err; 10205 void *data = NULL; 10206 unsigned int data_len = 0; 10207 10208 rtnl_lock(); 10209 10210 if (cb->args[0]) { 10211 /* subtract the 1 again here */ 10212 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 10213 struct wireless_dev *tmp; 10214 10215 if (!wiphy) { 10216 err = -ENODEV; 10217 goto out_unlock; 10218 } 10219 *rdev = wiphy_to_rdev(wiphy); 10220 *wdev = NULL; 10221 10222 if (cb->args[1]) { 10223 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 10224 if (tmp->identifier == cb->args[1] - 1) { 10225 *wdev = tmp; 10226 break; 10227 } 10228 } 10229 } 10230 10231 /* keep rtnl locked in successful case */ 10232 return 0; 10233 } 10234 10235 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 10236 nl80211_fam.attrbuf, nl80211_fam.maxattr, 10237 nl80211_policy); 10238 if (err) 10239 goto out_unlock; 10240 10241 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] || 10242 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) { 10243 err = -EINVAL; 10244 goto out_unlock; 10245 } 10246 10247 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 10248 nl80211_fam.attrbuf); 10249 if (IS_ERR(*wdev)) 10250 *wdev = NULL; 10251 10252 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 10253 nl80211_fam.attrbuf); 10254 if (IS_ERR(*rdev)) { 10255 err = PTR_ERR(*rdev); 10256 goto out_unlock; 10257 } 10258 10259 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]); 10260 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 10261 10262 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 10263 const struct wiphy_vendor_command *vcmd; 10264 10265 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 10266 10267 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10268 continue; 10269 10270 if (!vcmd->dumpit) { 10271 err = -EOPNOTSUPP; 10272 goto out_unlock; 10273 } 10274 10275 vcmd_idx = i; 10276 break; 10277 } 10278 10279 if (vcmd_idx < 0) { 10280 err = -EOPNOTSUPP; 10281 goto out_unlock; 10282 } 10283 10284 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) { 10285 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10286 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10287 } 10288 10289 /* 0 is the first index - add 1 to parse only once */ 10290 cb->args[0] = (*rdev)->wiphy_idx + 1; 10291 /* add 1 to know if it was NULL */ 10292 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 10293 cb->args[2] = vcmd_idx; 10294 cb->args[3] = (unsigned long)data; 10295 cb->args[4] = data_len; 10296 10297 /* keep rtnl locked in successful case */ 10298 return 0; 10299 out_unlock: 10300 rtnl_unlock(); 10301 return err; 10302 } 10303 10304 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 10305 struct netlink_callback *cb) 10306 { 10307 struct cfg80211_registered_device *rdev; 10308 struct wireless_dev *wdev; 10309 unsigned int vcmd_idx; 10310 const struct wiphy_vendor_command *vcmd; 10311 void *data; 10312 int data_len; 10313 int err; 10314 struct nlattr *vendor_data; 10315 10316 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 10317 if (err) 10318 return err; 10319 10320 vcmd_idx = cb->args[2]; 10321 data = (void *)cb->args[3]; 10322 data_len = cb->args[4]; 10323 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 10324 10325 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10326 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10327 if (!wdev) 10328 return -EINVAL; 10329 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10330 !wdev->netdev) 10331 return -EINVAL; 10332 10333 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10334 if (wdev->netdev && 10335 !netif_running(wdev->netdev)) 10336 return -ENETDOWN; 10337 if (!wdev->netdev && !wdev->p2p_started) 10338 return -ENETDOWN; 10339 } 10340 } 10341 10342 while (1) { 10343 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 10344 cb->nlh->nlmsg_seq, NLM_F_MULTI, 10345 NL80211_CMD_VENDOR); 10346 if (!hdr) 10347 break; 10348 10349 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10350 (wdev && nla_put_u64(skb, NL80211_ATTR_WDEV, 10351 wdev_id(wdev)))) { 10352 genlmsg_cancel(skb, hdr); 10353 break; 10354 } 10355 10356 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 10357 if (!vendor_data) { 10358 genlmsg_cancel(skb, hdr); 10359 break; 10360 } 10361 10362 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 10363 (unsigned long *)&cb->args[5]); 10364 nla_nest_end(skb, vendor_data); 10365 10366 if (err == -ENOBUFS || err == -ENOENT) { 10367 genlmsg_cancel(skb, hdr); 10368 break; 10369 } else if (err) { 10370 genlmsg_cancel(skb, hdr); 10371 goto out; 10372 } 10373 10374 genlmsg_end(skb, hdr); 10375 } 10376 10377 err = skb->len; 10378 out: 10379 rtnl_unlock(); 10380 return err; 10381 } 10382 10383 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 10384 enum nl80211_commands cmd, 10385 enum nl80211_attrs attr, 10386 int approxlen) 10387 { 10388 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 10389 10390 if (WARN_ON(!rdev->cur_cmd_info)) 10391 return NULL; 10392 10393 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 10394 rdev->cur_cmd_info->snd_portid, 10395 rdev->cur_cmd_info->snd_seq, 10396 cmd, attr, NULL, GFP_KERNEL); 10397 } 10398 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 10399 10400 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 10401 { 10402 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 10403 void *hdr = ((void **)skb->cb)[1]; 10404 struct nlattr *data = ((void **)skb->cb)[2]; 10405 10406 /* clear CB data for netlink core to own from now on */ 10407 memset(skb->cb, 0, sizeof(skb->cb)); 10408 10409 if (WARN_ON(!rdev->cur_cmd_info)) { 10410 kfree_skb(skb); 10411 return -EINVAL; 10412 } 10413 10414 nla_nest_end(skb, data); 10415 genlmsg_end(skb, hdr); 10416 return genlmsg_reply(skb, rdev->cur_cmd_info); 10417 } 10418 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 10419 10420 10421 static int nl80211_set_qos_map(struct sk_buff *skb, 10422 struct genl_info *info) 10423 { 10424 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10425 struct cfg80211_qos_map *qos_map = NULL; 10426 struct net_device *dev = info->user_ptr[1]; 10427 u8 *pos, len, num_des, des_len, des; 10428 int ret; 10429 10430 if (!rdev->ops->set_qos_map) 10431 return -EOPNOTSUPP; 10432 10433 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 10434 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 10435 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 10436 10437 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 10438 len > IEEE80211_QOS_MAP_LEN_MAX) 10439 return -EINVAL; 10440 10441 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 10442 if (!qos_map) 10443 return -ENOMEM; 10444 10445 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 10446 if (num_des) { 10447 des_len = num_des * 10448 sizeof(struct cfg80211_dscp_exception); 10449 memcpy(qos_map->dscp_exception, pos, des_len); 10450 qos_map->num_des = num_des; 10451 for (des = 0; des < num_des; des++) { 10452 if (qos_map->dscp_exception[des].up > 7) { 10453 kfree(qos_map); 10454 return -EINVAL; 10455 } 10456 } 10457 pos += des_len; 10458 } 10459 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 10460 } 10461 10462 wdev_lock(dev->ieee80211_ptr); 10463 ret = nl80211_key_allowed(dev->ieee80211_ptr); 10464 if (!ret) 10465 ret = rdev_set_qos_map(rdev, dev, qos_map); 10466 wdev_unlock(dev->ieee80211_ptr); 10467 10468 kfree(qos_map); 10469 return ret; 10470 } 10471 10472 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 10473 { 10474 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10475 struct net_device *dev = info->user_ptr[1]; 10476 struct wireless_dev *wdev = dev->ieee80211_ptr; 10477 const u8 *peer; 10478 u8 tsid, up; 10479 u16 admitted_time = 0; 10480 int err; 10481 10482 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 10483 return -EOPNOTSUPP; 10484 10485 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10486 !info->attrs[NL80211_ATTR_USER_PRIO]) 10487 return -EINVAL; 10488 10489 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10490 if (tsid >= IEEE80211_NUM_TIDS) 10491 return -EINVAL; 10492 10493 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10494 if (up >= IEEE80211_NUM_UPS) 10495 return -EINVAL; 10496 10497 /* WMM uses TIDs 0-7 even for TSPEC */ 10498 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10499 /* TODO: handle 802.11 TSPEC/admission control 10500 * need more attributes for that (e.g. BA session requirement); 10501 * change the WMM adminssion test above to allow both then 10502 */ 10503 return -EINVAL; 10504 } 10505 10506 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10507 10508 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10509 admitted_time = 10510 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10511 if (!admitted_time) 10512 return -EINVAL; 10513 } 10514 10515 wdev_lock(wdev); 10516 switch (wdev->iftype) { 10517 case NL80211_IFTYPE_STATION: 10518 case NL80211_IFTYPE_P2P_CLIENT: 10519 if (wdev->current_bss) 10520 break; 10521 err = -ENOTCONN; 10522 goto out; 10523 default: 10524 err = -EOPNOTSUPP; 10525 goto out; 10526 } 10527 10528 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10529 10530 out: 10531 wdev_unlock(wdev); 10532 return err; 10533 } 10534 10535 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10536 { 10537 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10538 struct net_device *dev = info->user_ptr[1]; 10539 struct wireless_dev *wdev = dev->ieee80211_ptr; 10540 const u8 *peer; 10541 u8 tsid; 10542 int err; 10543 10544 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10545 return -EINVAL; 10546 10547 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10548 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10549 10550 wdev_lock(wdev); 10551 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10552 wdev_unlock(wdev); 10553 10554 return err; 10555 } 10556 10557 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10558 struct genl_info *info) 10559 { 10560 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10561 struct net_device *dev = info->user_ptr[1]; 10562 struct wireless_dev *wdev = dev->ieee80211_ptr; 10563 struct cfg80211_chan_def chandef = {}; 10564 const u8 *addr; 10565 u8 oper_class; 10566 int err; 10567 10568 if (!rdev->ops->tdls_channel_switch || 10569 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10570 return -EOPNOTSUPP; 10571 10572 switch (dev->ieee80211_ptr->iftype) { 10573 case NL80211_IFTYPE_STATION: 10574 case NL80211_IFTYPE_P2P_CLIENT: 10575 break; 10576 default: 10577 return -EOPNOTSUPP; 10578 } 10579 10580 if (!info->attrs[NL80211_ATTR_MAC] || 10581 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10582 return -EINVAL; 10583 10584 err = nl80211_parse_chandef(rdev, info, &chandef); 10585 if (err) 10586 return err; 10587 10588 /* 10589 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10590 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10591 * specification is not defined for them. 10592 */ 10593 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 10594 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10595 chandef.width != NL80211_CHAN_WIDTH_20) 10596 return -EINVAL; 10597 10598 /* we will be active on the TDLS link */ 10599 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 10600 wdev->iftype)) 10601 return -EINVAL; 10602 10603 /* don't allow switching to DFS channels */ 10604 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10605 return -EINVAL; 10606 10607 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10608 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10609 10610 wdev_lock(wdev); 10611 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10612 wdev_unlock(wdev); 10613 10614 return err; 10615 } 10616 10617 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10618 struct genl_info *info) 10619 { 10620 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10621 struct net_device *dev = info->user_ptr[1]; 10622 struct wireless_dev *wdev = dev->ieee80211_ptr; 10623 const u8 *addr; 10624 10625 if (!rdev->ops->tdls_channel_switch || 10626 !rdev->ops->tdls_cancel_channel_switch || 10627 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10628 return -EOPNOTSUPP; 10629 10630 switch (dev->ieee80211_ptr->iftype) { 10631 case NL80211_IFTYPE_STATION: 10632 case NL80211_IFTYPE_P2P_CLIENT: 10633 break; 10634 default: 10635 return -EOPNOTSUPP; 10636 } 10637 10638 if (!info->attrs[NL80211_ATTR_MAC]) 10639 return -EINVAL; 10640 10641 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10642 10643 wdev_lock(wdev); 10644 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10645 wdev_unlock(wdev); 10646 10647 return 0; 10648 } 10649 10650 #define NL80211_FLAG_NEED_WIPHY 0x01 10651 #define NL80211_FLAG_NEED_NETDEV 0x02 10652 #define NL80211_FLAG_NEED_RTNL 0x04 10653 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10654 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10655 NL80211_FLAG_CHECK_NETDEV_UP) 10656 #define NL80211_FLAG_NEED_WDEV 0x10 10657 /* If a netdev is associated, it must be UP, P2P must be started */ 10658 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10659 NL80211_FLAG_CHECK_NETDEV_UP) 10660 #define NL80211_FLAG_CLEAR_SKB 0x20 10661 10662 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10663 struct genl_info *info) 10664 { 10665 struct cfg80211_registered_device *rdev; 10666 struct wireless_dev *wdev; 10667 struct net_device *dev; 10668 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10669 10670 if (rtnl) 10671 rtnl_lock(); 10672 10673 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10674 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10675 if (IS_ERR(rdev)) { 10676 if (rtnl) 10677 rtnl_unlock(); 10678 return PTR_ERR(rdev); 10679 } 10680 info->user_ptr[0] = rdev; 10681 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 10682 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10683 ASSERT_RTNL(); 10684 10685 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 10686 info->attrs); 10687 if (IS_ERR(wdev)) { 10688 if (rtnl) 10689 rtnl_unlock(); 10690 return PTR_ERR(wdev); 10691 } 10692 10693 dev = wdev->netdev; 10694 rdev = wiphy_to_rdev(wdev->wiphy); 10695 10696 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 10697 if (!dev) { 10698 if (rtnl) 10699 rtnl_unlock(); 10700 return -EINVAL; 10701 } 10702 10703 info->user_ptr[1] = dev; 10704 } else { 10705 info->user_ptr[1] = wdev; 10706 } 10707 10708 if (dev) { 10709 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 10710 !netif_running(dev)) { 10711 if (rtnl) 10712 rtnl_unlock(); 10713 return -ENETDOWN; 10714 } 10715 10716 dev_hold(dev); 10717 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 10718 if (!wdev->p2p_started) { 10719 if (rtnl) 10720 rtnl_unlock(); 10721 return -ENETDOWN; 10722 } 10723 } 10724 10725 info->user_ptr[0] = rdev; 10726 } 10727 10728 return 0; 10729 } 10730 10731 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10732 struct genl_info *info) 10733 { 10734 if (info->user_ptr[1]) { 10735 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10736 struct wireless_dev *wdev = info->user_ptr[1]; 10737 10738 if (wdev->netdev) 10739 dev_put(wdev->netdev); 10740 } else { 10741 dev_put(info->user_ptr[1]); 10742 } 10743 } 10744 10745 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10746 rtnl_unlock(); 10747 10748 /* If needed, clear the netlink message payload from the SKB 10749 * as it might contain key data that shouldn't stick around on 10750 * the heap after the SKB is freed. The netlink message header 10751 * is still needed for further processing, so leave it intact. 10752 */ 10753 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10754 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10755 10756 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10757 } 10758 } 10759 10760 static const struct genl_ops nl80211_ops[] = { 10761 { 10762 .cmd = NL80211_CMD_GET_WIPHY, 10763 .doit = nl80211_get_wiphy, 10764 .dumpit = nl80211_dump_wiphy, 10765 .done = nl80211_dump_wiphy_done, 10766 .policy = nl80211_policy, 10767 /* can be retrieved by unprivileged users */ 10768 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10769 NL80211_FLAG_NEED_RTNL, 10770 }, 10771 { 10772 .cmd = NL80211_CMD_SET_WIPHY, 10773 .doit = nl80211_set_wiphy, 10774 .policy = nl80211_policy, 10775 .flags = GENL_ADMIN_PERM, 10776 .internal_flags = NL80211_FLAG_NEED_RTNL, 10777 }, 10778 { 10779 .cmd = NL80211_CMD_GET_INTERFACE, 10780 .doit = nl80211_get_interface, 10781 .dumpit = nl80211_dump_interface, 10782 .policy = nl80211_policy, 10783 /* can be retrieved by unprivileged users */ 10784 .internal_flags = NL80211_FLAG_NEED_WDEV | 10785 NL80211_FLAG_NEED_RTNL, 10786 }, 10787 { 10788 .cmd = NL80211_CMD_SET_INTERFACE, 10789 .doit = nl80211_set_interface, 10790 .policy = nl80211_policy, 10791 .flags = GENL_ADMIN_PERM, 10792 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10793 NL80211_FLAG_NEED_RTNL, 10794 }, 10795 { 10796 .cmd = NL80211_CMD_NEW_INTERFACE, 10797 .doit = nl80211_new_interface, 10798 .policy = nl80211_policy, 10799 .flags = GENL_ADMIN_PERM, 10800 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10801 NL80211_FLAG_NEED_RTNL, 10802 }, 10803 { 10804 .cmd = NL80211_CMD_DEL_INTERFACE, 10805 .doit = nl80211_del_interface, 10806 .policy = nl80211_policy, 10807 .flags = GENL_ADMIN_PERM, 10808 .internal_flags = NL80211_FLAG_NEED_WDEV | 10809 NL80211_FLAG_NEED_RTNL, 10810 }, 10811 { 10812 .cmd = NL80211_CMD_GET_KEY, 10813 .doit = nl80211_get_key, 10814 .policy = nl80211_policy, 10815 .flags = GENL_ADMIN_PERM, 10816 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10817 NL80211_FLAG_NEED_RTNL, 10818 }, 10819 { 10820 .cmd = NL80211_CMD_SET_KEY, 10821 .doit = nl80211_set_key, 10822 .policy = nl80211_policy, 10823 .flags = GENL_ADMIN_PERM, 10824 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10825 NL80211_FLAG_NEED_RTNL | 10826 NL80211_FLAG_CLEAR_SKB, 10827 }, 10828 { 10829 .cmd = NL80211_CMD_NEW_KEY, 10830 .doit = nl80211_new_key, 10831 .policy = nl80211_policy, 10832 .flags = GENL_ADMIN_PERM, 10833 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10834 NL80211_FLAG_NEED_RTNL | 10835 NL80211_FLAG_CLEAR_SKB, 10836 }, 10837 { 10838 .cmd = NL80211_CMD_DEL_KEY, 10839 .doit = nl80211_del_key, 10840 .policy = nl80211_policy, 10841 .flags = GENL_ADMIN_PERM, 10842 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10843 NL80211_FLAG_NEED_RTNL, 10844 }, 10845 { 10846 .cmd = NL80211_CMD_SET_BEACON, 10847 .policy = nl80211_policy, 10848 .flags = GENL_ADMIN_PERM, 10849 .doit = nl80211_set_beacon, 10850 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10851 NL80211_FLAG_NEED_RTNL, 10852 }, 10853 { 10854 .cmd = NL80211_CMD_START_AP, 10855 .policy = nl80211_policy, 10856 .flags = GENL_ADMIN_PERM, 10857 .doit = nl80211_start_ap, 10858 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10859 NL80211_FLAG_NEED_RTNL, 10860 }, 10861 { 10862 .cmd = NL80211_CMD_STOP_AP, 10863 .policy = nl80211_policy, 10864 .flags = GENL_ADMIN_PERM, 10865 .doit = nl80211_stop_ap, 10866 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10867 NL80211_FLAG_NEED_RTNL, 10868 }, 10869 { 10870 .cmd = NL80211_CMD_GET_STATION, 10871 .doit = nl80211_get_station, 10872 .dumpit = nl80211_dump_station, 10873 .policy = nl80211_policy, 10874 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10875 NL80211_FLAG_NEED_RTNL, 10876 }, 10877 { 10878 .cmd = NL80211_CMD_SET_STATION, 10879 .doit = nl80211_set_station, 10880 .policy = nl80211_policy, 10881 .flags = GENL_ADMIN_PERM, 10882 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10883 NL80211_FLAG_NEED_RTNL, 10884 }, 10885 { 10886 .cmd = NL80211_CMD_NEW_STATION, 10887 .doit = nl80211_new_station, 10888 .policy = nl80211_policy, 10889 .flags = GENL_ADMIN_PERM, 10890 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10891 NL80211_FLAG_NEED_RTNL, 10892 }, 10893 { 10894 .cmd = NL80211_CMD_DEL_STATION, 10895 .doit = nl80211_del_station, 10896 .policy = nl80211_policy, 10897 .flags = GENL_ADMIN_PERM, 10898 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10899 NL80211_FLAG_NEED_RTNL, 10900 }, 10901 { 10902 .cmd = NL80211_CMD_GET_MPATH, 10903 .doit = nl80211_get_mpath, 10904 .dumpit = nl80211_dump_mpath, 10905 .policy = nl80211_policy, 10906 .flags = GENL_ADMIN_PERM, 10907 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10908 NL80211_FLAG_NEED_RTNL, 10909 }, 10910 { 10911 .cmd = NL80211_CMD_GET_MPP, 10912 .doit = nl80211_get_mpp, 10913 .dumpit = nl80211_dump_mpp, 10914 .policy = nl80211_policy, 10915 .flags = GENL_ADMIN_PERM, 10916 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10917 NL80211_FLAG_NEED_RTNL, 10918 }, 10919 { 10920 .cmd = NL80211_CMD_SET_MPATH, 10921 .doit = nl80211_set_mpath, 10922 .policy = nl80211_policy, 10923 .flags = GENL_ADMIN_PERM, 10924 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10925 NL80211_FLAG_NEED_RTNL, 10926 }, 10927 { 10928 .cmd = NL80211_CMD_NEW_MPATH, 10929 .doit = nl80211_new_mpath, 10930 .policy = nl80211_policy, 10931 .flags = GENL_ADMIN_PERM, 10932 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10933 NL80211_FLAG_NEED_RTNL, 10934 }, 10935 { 10936 .cmd = NL80211_CMD_DEL_MPATH, 10937 .doit = nl80211_del_mpath, 10938 .policy = nl80211_policy, 10939 .flags = GENL_ADMIN_PERM, 10940 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10941 NL80211_FLAG_NEED_RTNL, 10942 }, 10943 { 10944 .cmd = NL80211_CMD_SET_BSS, 10945 .doit = nl80211_set_bss, 10946 .policy = nl80211_policy, 10947 .flags = GENL_ADMIN_PERM, 10948 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10949 NL80211_FLAG_NEED_RTNL, 10950 }, 10951 { 10952 .cmd = NL80211_CMD_GET_REG, 10953 .doit = nl80211_get_reg_do, 10954 .dumpit = nl80211_get_reg_dump, 10955 .policy = nl80211_policy, 10956 .internal_flags = NL80211_FLAG_NEED_RTNL, 10957 /* can be retrieved by unprivileged users */ 10958 }, 10959 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 10960 { 10961 .cmd = NL80211_CMD_SET_REG, 10962 .doit = nl80211_set_reg, 10963 .policy = nl80211_policy, 10964 .flags = GENL_ADMIN_PERM, 10965 .internal_flags = NL80211_FLAG_NEED_RTNL, 10966 }, 10967 #endif 10968 { 10969 .cmd = NL80211_CMD_REQ_SET_REG, 10970 .doit = nl80211_req_set_reg, 10971 .policy = nl80211_policy, 10972 .flags = GENL_ADMIN_PERM, 10973 }, 10974 { 10975 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10976 .doit = nl80211_get_mesh_config, 10977 .policy = nl80211_policy, 10978 /* can be retrieved by unprivileged users */ 10979 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10980 NL80211_FLAG_NEED_RTNL, 10981 }, 10982 { 10983 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10984 .doit = nl80211_update_mesh_config, 10985 .policy = nl80211_policy, 10986 .flags = GENL_ADMIN_PERM, 10987 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10988 NL80211_FLAG_NEED_RTNL, 10989 }, 10990 { 10991 .cmd = NL80211_CMD_TRIGGER_SCAN, 10992 .doit = nl80211_trigger_scan, 10993 .policy = nl80211_policy, 10994 .flags = GENL_ADMIN_PERM, 10995 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10996 NL80211_FLAG_NEED_RTNL, 10997 }, 10998 { 10999 .cmd = NL80211_CMD_ABORT_SCAN, 11000 .doit = nl80211_abort_scan, 11001 .policy = nl80211_policy, 11002 .flags = GENL_ADMIN_PERM, 11003 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11004 NL80211_FLAG_NEED_RTNL, 11005 }, 11006 { 11007 .cmd = NL80211_CMD_GET_SCAN, 11008 .policy = nl80211_policy, 11009 .dumpit = nl80211_dump_scan, 11010 }, 11011 { 11012 .cmd = NL80211_CMD_START_SCHED_SCAN, 11013 .doit = nl80211_start_sched_scan, 11014 .policy = nl80211_policy, 11015 .flags = GENL_ADMIN_PERM, 11016 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11017 NL80211_FLAG_NEED_RTNL, 11018 }, 11019 { 11020 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 11021 .doit = nl80211_stop_sched_scan, 11022 .policy = nl80211_policy, 11023 .flags = GENL_ADMIN_PERM, 11024 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11025 NL80211_FLAG_NEED_RTNL, 11026 }, 11027 { 11028 .cmd = NL80211_CMD_AUTHENTICATE, 11029 .doit = nl80211_authenticate, 11030 .policy = nl80211_policy, 11031 .flags = GENL_ADMIN_PERM, 11032 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11033 NL80211_FLAG_NEED_RTNL | 11034 NL80211_FLAG_CLEAR_SKB, 11035 }, 11036 { 11037 .cmd = NL80211_CMD_ASSOCIATE, 11038 .doit = nl80211_associate, 11039 .policy = nl80211_policy, 11040 .flags = GENL_ADMIN_PERM, 11041 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11042 NL80211_FLAG_NEED_RTNL, 11043 }, 11044 { 11045 .cmd = NL80211_CMD_DEAUTHENTICATE, 11046 .doit = nl80211_deauthenticate, 11047 .policy = nl80211_policy, 11048 .flags = GENL_ADMIN_PERM, 11049 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11050 NL80211_FLAG_NEED_RTNL, 11051 }, 11052 { 11053 .cmd = NL80211_CMD_DISASSOCIATE, 11054 .doit = nl80211_disassociate, 11055 .policy = nl80211_policy, 11056 .flags = GENL_ADMIN_PERM, 11057 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11058 NL80211_FLAG_NEED_RTNL, 11059 }, 11060 { 11061 .cmd = NL80211_CMD_JOIN_IBSS, 11062 .doit = nl80211_join_ibss, 11063 .policy = nl80211_policy, 11064 .flags = GENL_ADMIN_PERM, 11065 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11066 NL80211_FLAG_NEED_RTNL, 11067 }, 11068 { 11069 .cmd = NL80211_CMD_LEAVE_IBSS, 11070 .doit = nl80211_leave_ibss, 11071 .policy = nl80211_policy, 11072 .flags = GENL_ADMIN_PERM, 11073 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11074 NL80211_FLAG_NEED_RTNL, 11075 }, 11076 #ifdef CONFIG_NL80211_TESTMODE 11077 { 11078 .cmd = NL80211_CMD_TESTMODE, 11079 .doit = nl80211_testmode_do, 11080 .dumpit = nl80211_testmode_dump, 11081 .policy = nl80211_policy, 11082 .flags = GENL_ADMIN_PERM, 11083 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11084 NL80211_FLAG_NEED_RTNL, 11085 }, 11086 #endif 11087 { 11088 .cmd = NL80211_CMD_CONNECT, 11089 .doit = nl80211_connect, 11090 .policy = nl80211_policy, 11091 .flags = GENL_ADMIN_PERM, 11092 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11093 NL80211_FLAG_NEED_RTNL, 11094 }, 11095 { 11096 .cmd = NL80211_CMD_DISCONNECT, 11097 .doit = nl80211_disconnect, 11098 .policy = nl80211_policy, 11099 .flags = GENL_ADMIN_PERM, 11100 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11101 NL80211_FLAG_NEED_RTNL, 11102 }, 11103 { 11104 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 11105 .doit = nl80211_wiphy_netns, 11106 .policy = nl80211_policy, 11107 .flags = GENL_ADMIN_PERM, 11108 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11109 NL80211_FLAG_NEED_RTNL, 11110 }, 11111 { 11112 .cmd = NL80211_CMD_GET_SURVEY, 11113 .policy = nl80211_policy, 11114 .dumpit = nl80211_dump_survey, 11115 }, 11116 { 11117 .cmd = NL80211_CMD_SET_PMKSA, 11118 .doit = nl80211_setdel_pmksa, 11119 .policy = nl80211_policy, 11120 .flags = GENL_ADMIN_PERM, 11121 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11122 NL80211_FLAG_NEED_RTNL, 11123 }, 11124 { 11125 .cmd = NL80211_CMD_DEL_PMKSA, 11126 .doit = nl80211_setdel_pmksa, 11127 .policy = nl80211_policy, 11128 .flags = GENL_ADMIN_PERM, 11129 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11130 NL80211_FLAG_NEED_RTNL, 11131 }, 11132 { 11133 .cmd = NL80211_CMD_FLUSH_PMKSA, 11134 .doit = nl80211_flush_pmksa, 11135 .policy = nl80211_policy, 11136 .flags = GENL_ADMIN_PERM, 11137 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11138 NL80211_FLAG_NEED_RTNL, 11139 }, 11140 { 11141 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 11142 .doit = nl80211_remain_on_channel, 11143 .policy = nl80211_policy, 11144 .flags = GENL_ADMIN_PERM, 11145 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11146 NL80211_FLAG_NEED_RTNL, 11147 }, 11148 { 11149 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11150 .doit = nl80211_cancel_remain_on_channel, 11151 .policy = nl80211_policy, 11152 .flags = GENL_ADMIN_PERM, 11153 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11154 NL80211_FLAG_NEED_RTNL, 11155 }, 11156 { 11157 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 11158 .doit = nl80211_set_tx_bitrate_mask, 11159 .policy = nl80211_policy, 11160 .flags = GENL_ADMIN_PERM, 11161 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11162 NL80211_FLAG_NEED_RTNL, 11163 }, 11164 { 11165 .cmd = NL80211_CMD_REGISTER_FRAME, 11166 .doit = nl80211_register_mgmt, 11167 .policy = nl80211_policy, 11168 .flags = GENL_ADMIN_PERM, 11169 .internal_flags = NL80211_FLAG_NEED_WDEV | 11170 NL80211_FLAG_NEED_RTNL, 11171 }, 11172 { 11173 .cmd = NL80211_CMD_FRAME, 11174 .doit = nl80211_tx_mgmt, 11175 .policy = nl80211_policy, 11176 .flags = GENL_ADMIN_PERM, 11177 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11178 NL80211_FLAG_NEED_RTNL, 11179 }, 11180 { 11181 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 11182 .doit = nl80211_tx_mgmt_cancel_wait, 11183 .policy = nl80211_policy, 11184 .flags = GENL_ADMIN_PERM, 11185 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11186 NL80211_FLAG_NEED_RTNL, 11187 }, 11188 { 11189 .cmd = NL80211_CMD_SET_POWER_SAVE, 11190 .doit = nl80211_set_power_save, 11191 .policy = nl80211_policy, 11192 .flags = GENL_ADMIN_PERM, 11193 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11194 NL80211_FLAG_NEED_RTNL, 11195 }, 11196 { 11197 .cmd = NL80211_CMD_GET_POWER_SAVE, 11198 .doit = nl80211_get_power_save, 11199 .policy = nl80211_policy, 11200 /* can be retrieved by unprivileged users */ 11201 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11202 NL80211_FLAG_NEED_RTNL, 11203 }, 11204 { 11205 .cmd = NL80211_CMD_SET_CQM, 11206 .doit = nl80211_set_cqm, 11207 .policy = nl80211_policy, 11208 .flags = GENL_ADMIN_PERM, 11209 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11210 NL80211_FLAG_NEED_RTNL, 11211 }, 11212 { 11213 .cmd = NL80211_CMD_SET_CHANNEL, 11214 .doit = nl80211_set_channel, 11215 .policy = nl80211_policy, 11216 .flags = GENL_ADMIN_PERM, 11217 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11218 NL80211_FLAG_NEED_RTNL, 11219 }, 11220 { 11221 .cmd = NL80211_CMD_SET_WDS_PEER, 11222 .doit = nl80211_set_wds_peer, 11223 .policy = nl80211_policy, 11224 .flags = GENL_ADMIN_PERM, 11225 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11226 NL80211_FLAG_NEED_RTNL, 11227 }, 11228 { 11229 .cmd = NL80211_CMD_JOIN_MESH, 11230 .doit = nl80211_join_mesh, 11231 .policy = nl80211_policy, 11232 .flags = GENL_ADMIN_PERM, 11233 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11234 NL80211_FLAG_NEED_RTNL, 11235 }, 11236 { 11237 .cmd = NL80211_CMD_LEAVE_MESH, 11238 .doit = nl80211_leave_mesh, 11239 .policy = nl80211_policy, 11240 .flags = GENL_ADMIN_PERM, 11241 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11242 NL80211_FLAG_NEED_RTNL, 11243 }, 11244 { 11245 .cmd = NL80211_CMD_JOIN_OCB, 11246 .doit = nl80211_join_ocb, 11247 .policy = nl80211_policy, 11248 .flags = GENL_ADMIN_PERM, 11249 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11250 NL80211_FLAG_NEED_RTNL, 11251 }, 11252 { 11253 .cmd = NL80211_CMD_LEAVE_OCB, 11254 .doit = nl80211_leave_ocb, 11255 .policy = nl80211_policy, 11256 .flags = GENL_ADMIN_PERM, 11257 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11258 NL80211_FLAG_NEED_RTNL, 11259 }, 11260 #ifdef CONFIG_PM 11261 { 11262 .cmd = NL80211_CMD_GET_WOWLAN, 11263 .doit = nl80211_get_wowlan, 11264 .policy = nl80211_policy, 11265 /* can be retrieved by unprivileged users */ 11266 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11267 NL80211_FLAG_NEED_RTNL, 11268 }, 11269 { 11270 .cmd = NL80211_CMD_SET_WOWLAN, 11271 .doit = nl80211_set_wowlan, 11272 .policy = nl80211_policy, 11273 .flags = GENL_ADMIN_PERM, 11274 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11275 NL80211_FLAG_NEED_RTNL, 11276 }, 11277 #endif 11278 { 11279 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 11280 .doit = nl80211_set_rekey_data, 11281 .policy = nl80211_policy, 11282 .flags = GENL_ADMIN_PERM, 11283 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11284 NL80211_FLAG_NEED_RTNL | 11285 NL80211_FLAG_CLEAR_SKB, 11286 }, 11287 { 11288 .cmd = NL80211_CMD_TDLS_MGMT, 11289 .doit = nl80211_tdls_mgmt, 11290 .policy = nl80211_policy, 11291 .flags = GENL_ADMIN_PERM, 11292 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11293 NL80211_FLAG_NEED_RTNL, 11294 }, 11295 { 11296 .cmd = NL80211_CMD_TDLS_OPER, 11297 .doit = nl80211_tdls_oper, 11298 .policy = nl80211_policy, 11299 .flags = GENL_ADMIN_PERM, 11300 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11301 NL80211_FLAG_NEED_RTNL, 11302 }, 11303 { 11304 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 11305 .doit = nl80211_register_unexpected_frame, 11306 .policy = nl80211_policy, 11307 .flags = GENL_ADMIN_PERM, 11308 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11309 NL80211_FLAG_NEED_RTNL, 11310 }, 11311 { 11312 .cmd = NL80211_CMD_PROBE_CLIENT, 11313 .doit = nl80211_probe_client, 11314 .policy = nl80211_policy, 11315 .flags = GENL_ADMIN_PERM, 11316 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11317 NL80211_FLAG_NEED_RTNL, 11318 }, 11319 { 11320 .cmd = NL80211_CMD_REGISTER_BEACONS, 11321 .doit = nl80211_register_beacons, 11322 .policy = nl80211_policy, 11323 .flags = GENL_ADMIN_PERM, 11324 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11325 NL80211_FLAG_NEED_RTNL, 11326 }, 11327 { 11328 .cmd = NL80211_CMD_SET_NOACK_MAP, 11329 .doit = nl80211_set_noack_map, 11330 .policy = nl80211_policy, 11331 .flags = GENL_ADMIN_PERM, 11332 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11333 NL80211_FLAG_NEED_RTNL, 11334 }, 11335 { 11336 .cmd = NL80211_CMD_START_P2P_DEVICE, 11337 .doit = nl80211_start_p2p_device, 11338 .policy = nl80211_policy, 11339 .flags = GENL_ADMIN_PERM, 11340 .internal_flags = NL80211_FLAG_NEED_WDEV | 11341 NL80211_FLAG_NEED_RTNL, 11342 }, 11343 { 11344 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 11345 .doit = nl80211_stop_p2p_device, 11346 .policy = nl80211_policy, 11347 .flags = GENL_ADMIN_PERM, 11348 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11349 NL80211_FLAG_NEED_RTNL, 11350 }, 11351 { 11352 .cmd = NL80211_CMD_SET_MCAST_RATE, 11353 .doit = nl80211_set_mcast_rate, 11354 .policy = nl80211_policy, 11355 .flags = GENL_ADMIN_PERM, 11356 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11357 NL80211_FLAG_NEED_RTNL, 11358 }, 11359 { 11360 .cmd = NL80211_CMD_SET_MAC_ACL, 11361 .doit = nl80211_set_mac_acl, 11362 .policy = nl80211_policy, 11363 .flags = GENL_ADMIN_PERM, 11364 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11365 NL80211_FLAG_NEED_RTNL, 11366 }, 11367 { 11368 .cmd = NL80211_CMD_RADAR_DETECT, 11369 .doit = nl80211_start_radar_detection, 11370 .policy = nl80211_policy, 11371 .flags = GENL_ADMIN_PERM, 11372 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11373 NL80211_FLAG_NEED_RTNL, 11374 }, 11375 { 11376 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 11377 .doit = nl80211_get_protocol_features, 11378 .policy = nl80211_policy, 11379 }, 11380 { 11381 .cmd = NL80211_CMD_UPDATE_FT_IES, 11382 .doit = nl80211_update_ft_ies, 11383 .policy = nl80211_policy, 11384 .flags = GENL_ADMIN_PERM, 11385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11386 NL80211_FLAG_NEED_RTNL, 11387 }, 11388 { 11389 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 11390 .doit = nl80211_crit_protocol_start, 11391 .policy = nl80211_policy, 11392 .flags = GENL_ADMIN_PERM, 11393 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11394 NL80211_FLAG_NEED_RTNL, 11395 }, 11396 { 11397 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 11398 .doit = nl80211_crit_protocol_stop, 11399 .policy = nl80211_policy, 11400 .flags = GENL_ADMIN_PERM, 11401 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11402 NL80211_FLAG_NEED_RTNL, 11403 }, 11404 { 11405 .cmd = NL80211_CMD_GET_COALESCE, 11406 .doit = nl80211_get_coalesce, 11407 .policy = nl80211_policy, 11408 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11409 NL80211_FLAG_NEED_RTNL, 11410 }, 11411 { 11412 .cmd = NL80211_CMD_SET_COALESCE, 11413 .doit = nl80211_set_coalesce, 11414 .policy = nl80211_policy, 11415 .flags = GENL_ADMIN_PERM, 11416 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11417 NL80211_FLAG_NEED_RTNL, 11418 }, 11419 { 11420 .cmd = NL80211_CMD_CHANNEL_SWITCH, 11421 .doit = nl80211_channel_switch, 11422 .policy = nl80211_policy, 11423 .flags = GENL_ADMIN_PERM, 11424 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11425 NL80211_FLAG_NEED_RTNL, 11426 }, 11427 { 11428 .cmd = NL80211_CMD_VENDOR, 11429 .doit = nl80211_vendor_cmd, 11430 .dumpit = nl80211_vendor_cmd_dump, 11431 .policy = nl80211_policy, 11432 .flags = GENL_ADMIN_PERM, 11433 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11434 NL80211_FLAG_NEED_RTNL, 11435 }, 11436 { 11437 .cmd = NL80211_CMD_SET_QOS_MAP, 11438 .doit = nl80211_set_qos_map, 11439 .policy = nl80211_policy, 11440 .flags = GENL_ADMIN_PERM, 11441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11442 NL80211_FLAG_NEED_RTNL, 11443 }, 11444 { 11445 .cmd = NL80211_CMD_ADD_TX_TS, 11446 .doit = nl80211_add_tx_ts, 11447 .policy = nl80211_policy, 11448 .flags = GENL_ADMIN_PERM, 11449 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11450 NL80211_FLAG_NEED_RTNL, 11451 }, 11452 { 11453 .cmd = NL80211_CMD_DEL_TX_TS, 11454 .doit = nl80211_del_tx_ts, 11455 .policy = nl80211_policy, 11456 .flags = GENL_ADMIN_PERM, 11457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11458 NL80211_FLAG_NEED_RTNL, 11459 }, 11460 { 11461 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 11462 .doit = nl80211_tdls_channel_switch, 11463 .policy = nl80211_policy, 11464 .flags = GENL_ADMIN_PERM, 11465 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11466 NL80211_FLAG_NEED_RTNL, 11467 }, 11468 { 11469 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 11470 .doit = nl80211_tdls_cancel_channel_switch, 11471 .policy = nl80211_policy, 11472 .flags = GENL_ADMIN_PERM, 11473 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11474 NL80211_FLAG_NEED_RTNL, 11475 }, 11476 }; 11477 11478 /* notification functions */ 11479 11480 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 11481 enum nl80211_commands cmd) 11482 { 11483 struct sk_buff *msg; 11484 struct nl80211_dump_wiphy_state state = {}; 11485 11486 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 11487 cmd != NL80211_CMD_DEL_WIPHY); 11488 11489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11490 if (!msg) 11491 return; 11492 11493 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 11494 nlmsg_free(msg); 11495 return; 11496 } 11497 11498 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11499 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11500 } 11501 11502 static int nl80211_add_scan_req(struct sk_buff *msg, 11503 struct cfg80211_registered_device *rdev) 11504 { 11505 struct cfg80211_scan_request *req = rdev->scan_req; 11506 struct nlattr *nest; 11507 int i; 11508 11509 if (WARN_ON(!req)) 11510 return 0; 11511 11512 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11513 if (!nest) 11514 goto nla_put_failure; 11515 for (i = 0; i < req->n_ssids; i++) { 11516 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11517 goto nla_put_failure; 11518 } 11519 nla_nest_end(msg, nest); 11520 11521 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11522 if (!nest) 11523 goto nla_put_failure; 11524 for (i = 0; i < req->n_channels; i++) { 11525 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11526 goto nla_put_failure; 11527 } 11528 nla_nest_end(msg, nest); 11529 11530 if (req->ie && 11531 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11532 goto nla_put_failure; 11533 11534 if (req->flags && 11535 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11536 goto nla_put_failure; 11537 11538 return 0; 11539 nla_put_failure: 11540 return -ENOBUFS; 11541 } 11542 11543 static int nl80211_send_scan_msg(struct sk_buff *msg, 11544 struct cfg80211_registered_device *rdev, 11545 struct wireless_dev *wdev, 11546 u32 portid, u32 seq, int flags, 11547 u32 cmd) 11548 { 11549 void *hdr; 11550 11551 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11552 if (!hdr) 11553 return -1; 11554 11555 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11556 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11557 wdev->netdev->ifindex)) || 11558 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11559 goto nla_put_failure; 11560 11561 /* ignore errors and send incomplete event anyway */ 11562 nl80211_add_scan_req(msg, rdev); 11563 11564 genlmsg_end(msg, hdr); 11565 return 0; 11566 11567 nla_put_failure: 11568 genlmsg_cancel(msg, hdr); 11569 return -EMSGSIZE; 11570 } 11571 11572 static int 11573 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11574 struct cfg80211_registered_device *rdev, 11575 struct net_device *netdev, 11576 u32 portid, u32 seq, int flags, u32 cmd) 11577 { 11578 void *hdr; 11579 11580 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11581 if (!hdr) 11582 return -1; 11583 11584 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11585 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11586 goto nla_put_failure; 11587 11588 genlmsg_end(msg, hdr); 11589 return 0; 11590 11591 nla_put_failure: 11592 genlmsg_cancel(msg, hdr); 11593 return -EMSGSIZE; 11594 } 11595 11596 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11597 struct wireless_dev *wdev) 11598 { 11599 struct sk_buff *msg; 11600 11601 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11602 if (!msg) 11603 return; 11604 11605 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11606 NL80211_CMD_TRIGGER_SCAN) < 0) { 11607 nlmsg_free(msg); 11608 return; 11609 } 11610 11611 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11612 NL80211_MCGRP_SCAN, GFP_KERNEL); 11613 } 11614 11615 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11616 struct wireless_dev *wdev, bool aborted) 11617 { 11618 struct sk_buff *msg; 11619 11620 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11621 if (!msg) 11622 return NULL; 11623 11624 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11625 aborted ? NL80211_CMD_SCAN_ABORTED : 11626 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11627 nlmsg_free(msg); 11628 return NULL; 11629 } 11630 11631 return msg; 11632 } 11633 11634 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11635 struct sk_buff *msg) 11636 { 11637 if (!msg) 11638 return; 11639 11640 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11641 NL80211_MCGRP_SCAN, GFP_KERNEL); 11642 } 11643 11644 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11645 struct net_device *netdev) 11646 { 11647 struct sk_buff *msg; 11648 11649 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11650 if (!msg) 11651 return; 11652 11653 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11654 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11655 nlmsg_free(msg); 11656 return; 11657 } 11658 11659 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11660 NL80211_MCGRP_SCAN, GFP_KERNEL); 11661 } 11662 11663 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11664 struct net_device *netdev, u32 cmd) 11665 { 11666 struct sk_buff *msg; 11667 11668 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11669 if (!msg) 11670 return; 11671 11672 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 11673 nlmsg_free(msg); 11674 return; 11675 } 11676 11677 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11678 NL80211_MCGRP_SCAN, GFP_KERNEL); 11679 } 11680 11681 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 11682 struct regulatory_request *request) 11683 { 11684 /* Userspace can always count this one always being set */ 11685 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 11686 goto nla_put_failure; 11687 11688 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 11689 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11690 NL80211_REGDOM_TYPE_WORLD)) 11691 goto nla_put_failure; 11692 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 11693 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11694 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 11695 goto nla_put_failure; 11696 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 11697 request->intersect) { 11698 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11699 NL80211_REGDOM_TYPE_INTERSECTION)) 11700 goto nla_put_failure; 11701 } else { 11702 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11703 NL80211_REGDOM_TYPE_COUNTRY) || 11704 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 11705 request->alpha2)) 11706 goto nla_put_failure; 11707 } 11708 11709 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 11710 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 11711 11712 if (wiphy && 11713 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 11714 goto nla_put_failure; 11715 11716 if (wiphy && 11717 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 11718 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 11719 goto nla_put_failure; 11720 } 11721 11722 return true; 11723 11724 nla_put_failure: 11725 return false; 11726 } 11727 11728 /* 11729 * This can happen on global regulatory changes or device specific settings 11730 * based on custom regulatory domains. 11731 */ 11732 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 11733 struct regulatory_request *request) 11734 { 11735 struct sk_buff *msg; 11736 void *hdr; 11737 11738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11739 if (!msg) 11740 return; 11741 11742 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 11743 if (!hdr) { 11744 nlmsg_free(msg); 11745 return; 11746 } 11747 11748 if (nl80211_reg_change_event_fill(msg, request) == false) 11749 goto nla_put_failure; 11750 11751 genlmsg_end(msg, hdr); 11752 11753 rcu_read_lock(); 11754 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11755 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11756 rcu_read_unlock(); 11757 11758 return; 11759 11760 nla_put_failure: 11761 genlmsg_cancel(msg, hdr); 11762 nlmsg_free(msg); 11763 } 11764 11765 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11766 struct net_device *netdev, 11767 const u8 *buf, size_t len, 11768 enum nl80211_commands cmd, gfp_t gfp, 11769 int uapsd_queues) 11770 { 11771 struct sk_buff *msg; 11772 void *hdr; 11773 11774 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11775 if (!msg) 11776 return; 11777 11778 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11779 if (!hdr) { 11780 nlmsg_free(msg); 11781 return; 11782 } 11783 11784 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11785 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11786 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11787 goto nla_put_failure; 11788 11789 if (uapsd_queues >= 0) { 11790 struct nlattr *nla_wmm = 11791 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11792 if (!nla_wmm) 11793 goto nla_put_failure; 11794 11795 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11796 uapsd_queues)) 11797 goto nla_put_failure; 11798 11799 nla_nest_end(msg, nla_wmm); 11800 } 11801 11802 genlmsg_end(msg, hdr); 11803 11804 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11805 NL80211_MCGRP_MLME, gfp); 11806 return; 11807 11808 nla_put_failure: 11809 genlmsg_cancel(msg, hdr); 11810 nlmsg_free(msg); 11811 } 11812 11813 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11814 struct net_device *netdev, const u8 *buf, 11815 size_t len, gfp_t gfp) 11816 { 11817 nl80211_send_mlme_event(rdev, netdev, buf, len, 11818 NL80211_CMD_AUTHENTICATE, gfp, -1); 11819 } 11820 11821 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11822 struct net_device *netdev, const u8 *buf, 11823 size_t len, gfp_t gfp, int uapsd_queues) 11824 { 11825 nl80211_send_mlme_event(rdev, netdev, buf, len, 11826 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11827 } 11828 11829 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11830 struct net_device *netdev, const u8 *buf, 11831 size_t len, gfp_t gfp) 11832 { 11833 nl80211_send_mlme_event(rdev, netdev, buf, len, 11834 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11835 } 11836 11837 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11838 struct net_device *netdev, const u8 *buf, 11839 size_t len, gfp_t gfp) 11840 { 11841 nl80211_send_mlme_event(rdev, netdev, buf, len, 11842 NL80211_CMD_DISASSOCIATE, gfp, -1); 11843 } 11844 11845 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11846 size_t len) 11847 { 11848 struct wireless_dev *wdev = dev->ieee80211_ptr; 11849 struct wiphy *wiphy = wdev->wiphy; 11850 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11851 const struct ieee80211_mgmt *mgmt = (void *)buf; 11852 u32 cmd; 11853 11854 if (WARN_ON(len < 2)) 11855 return; 11856 11857 if (ieee80211_is_deauth(mgmt->frame_control)) 11858 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11859 else 11860 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11861 11862 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11863 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11864 } 11865 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11866 11867 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11868 struct net_device *netdev, int cmd, 11869 const u8 *addr, gfp_t gfp) 11870 { 11871 struct sk_buff *msg; 11872 void *hdr; 11873 11874 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11875 if (!msg) 11876 return; 11877 11878 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11879 if (!hdr) { 11880 nlmsg_free(msg); 11881 return; 11882 } 11883 11884 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11885 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11886 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11887 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11888 goto nla_put_failure; 11889 11890 genlmsg_end(msg, hdr); 11891 11892 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11893 NL80211_MCGRP_MLME, gfp); 11894 return; 11895 11896 nla_put_failure: 11897 genlmsg_cancel(msg, hdr); 11898 nlmsg_free(msg); 11899 } 11900 11901 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11902 struct net_device *netdev, const u8 *addr, 11903 gfp_t gfp) 11904 { 11905 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11906 addr, gfp); 11907 } 11908 11909 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11910 struct net_device *netdev, const u8 *addr, 11911 gfp_t gfp) 11912 { 11913 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11914 addr, gfp); 11915 } 11916 11917 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11918 struct net_device *netdev, const u8 *bssid, 11919 const u8 *req_ie, size_t req_ie_len, 11920 const u8 *resp_ie, size_t resp_ie_len, 11921 u16 status, gfp_t gfp) 11922 { 11923 struct sk_buff *msg; 11924 void *hdr; 11925 11926 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11927 if (!msg) 11928 return; 11929 11930 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11931 if (!hdr) { 11932 nlmsg_free(msg); 11933 return; 11934 } 11935 11936 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11937 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11938 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11939 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11940 (req_ie && 11941 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11942 (resp_ie && 11943 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11944 goto nla_put_failure; 11945 11946 genlmsg_end(msg, hdr); 11947 11948 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11949 NL80211_MCGRP_MLME, gfp); 11950 return; 11951 11952 nla_put_failure: 11953 genlmsg_cancel(msg, hdr); 11954 nlmsg_free(msg); 11955 11956 } 11957 11958 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11959 struct net_device *netdev, const u8 *bssid, 11960 const u8 *req_ie, size_t req_ie_len, 11961 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11962 { 11963 struct sk_buff *msg; 11964 void *hdr; 11965 11966 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11967 if (!msg) 11968 return; 11969 11970 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11971 if (!hdr) { 11972 nlmsg_free(msg); 11973 return; 11974 } 11975 11976 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11977 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11978 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11979 (req_ie && 11980 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11981 (resp_ie && 11982 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11983 goto nla_put_failure; 11984 11985 genlmsg_end(msg, hdr); 11986 11987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11988 NL80211_MCGRP_MLME, gfp); 11989 return; 11990 11991 nla_put_failure: 11992 genlmsg_cancel(msg, hdr); 11993 nlmsg_free(msg); 11994 11995 } 11996 11997 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11998 struct net_device *netdev, u16 reason, 11999 const u8 *ie, size_t ie_len, bool from_ap) 12000 { 12001 struct sk_buff *msg; 12002 void *hdr; 12003 12004 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12005 if (!msg) 12006 return; 12007 12008 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 12009 if (!hdr) { 12010 nlmsg_free(msg); 12011 return; 12012 } 12013 12014 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12015 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12016 (from_ap && reason && 12017 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 12018 (from_ap && 12019 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 12020 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 12021 goto nla_put_failure; 12022 12023 genlmsg_end(msg, hdr); 12024 12025 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12026 NL80211_MCGRP_MLME, GFP_KERNEL); 12027 return; 12028 12029 nla_put_failure: 12030 genlmsg_cancel(msg, hdr); 12031 nlmsg_free(msg); 12032 12033 } 12034 12035 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 12036 struct net_device *netdev, const u8 *bssid, 12037 gfp_t gfp) 12038 { 12039 struct sk_buff *msg; 12040 void *hdr; 12041 12042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12043 if (!msg) 12044 return; 12045 12046 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 12047 if (!hdr) { 12048 nlmsg_free(msg); 12049 return; 12050 } 12051 12052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12053 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12054 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12055 goto nla_put_failure; 12056 12057 genlmsg_end(msg, hdr); 12058 12059 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12060 NL80211_MCGRP_MLME, gfp); 12061 return; 12062 12063 nla_put_failure: 12064 genlmsg_cancel(msg, hdr); 12065 nlmsg_free(msg); 12066 } 12067 12068 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 12069 const u8* ie, u8 ie_len, gfp_t gfp) 12070 { 12071 struct wireless_dev *wdev = dev->ieee80211_ptr; 12072 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12073 struct sk_buff *msg; 12074 void *hdr; 12075 12076 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 12077 return; 12078 12079 trace_cfg80211_notify_new_peer_candidate(dev, addr); 12080 12081 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12082 if (!msg) 12083 return; 12084 12085 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 12086 if (!hdr) { 12087 nlmsg_free(msg); 12088 return; 12089 } 12090 12091 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12092 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12093 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12094 (ie_len && ie && 12095 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 12096 goto nla_put_failure; 12097 12098 genlmsg_end(msg, hdr); 12099 12100 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12101 NL80211_MCGRP_MLME, gfp); 12102 return; 12103 12104 nla_put_failure: 12105 genlmsg_cancel(msg, hdr); 12106 nlmsg_free(msg); 12107 } 12108 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 12109 12110 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 12111 struct net_device *netdev, const u8 *addr, 12112 enum nl80211_key_type key_type, int key_id, 12113 const u8 *tsc, gfp_t gfp) 12114 { 12115 struct sk_buff *msg; 12116 void *hdr; 12117 12118 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12119 if (!msg) 12120 return; 12121 12122 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 12123 if (!hdr) { 12124 nlmsg_free(msg); 12125 return; 12126 } 12127 12128 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12129 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12130 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 12131 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 12132 (key_id != -1 && 12133 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 12134 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 12135 goto nla_put_failure; 12136 12137 genlmsg_end(msg, hdr); 12138 12139 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12140 NL80211_MCGRP_MLME, gfp); 12141 return; 12142 12143 nla_put_failure: 12144 genlmsg_cancel(msg, hdr); 12145 nlmsg_free(msg); 12146 } 12147 12148 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 12149 struct ieee80211_channel *channel_before, 12150 struct ieee80211_channel *channel_after) 12151 { 12152 struct sk_buff *msg; 12153 void *hdr; 12154 struct nlattr *nl_freq; 12155 12156 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 12157 if (!msg) 12158 return; 12159 12160 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 12161 if (!hdr) { 12162 nlmsg_free(msg); 12163 return; 12164 } 12165 12166 /* 12167 * Since we are applying the beacon hint to a wiphy we know its 12168 * wiphy_idx is valid 12169 */ 12170 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 12171 goto nla_put_failure; 12172 12173 /* Before */ 12174 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 12175 if (!nl_freq) 12176 goto nla_put_failure; 12177 if (nl80211_msg_put_channel(msg, channel_before, false)) 12178 goto nla_put_failure; 12179 nla_nest_end(msg, nl_freq); 12180 12181 /* After */ 12182 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 12183 if (!nl_freq) 12184 goto nla_put_failure; 12185 if (nl80211_msg_put_channel(msg, channel_after, false)) 12186 goto nla_put_failure; 12187 nla_nest_end(msg, nl_freq); 12188 12189 genlmsg_end(msg, hdr); 12190 12191 rcu_read_lock(); 12192 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 12193 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 12194 rcu_read_unlock(); 12195 12196 return; 12197 12198 nla_put_failure: 12199 genlmsg_cancel(msg, hdr); 12200 nlmsg_free(msg); 12201 } 12202 12203 static void nl80211_send_remain_on_chan_event( 12204 int cmd, struct cfg80211_registered_device *rdev, 12205 struct wireless_dev *wdev, u64 cookie, 12206 struct ieee80211_channel *chan, 12207 unsigned int duration, gfp_t gfp) 12208 { 12209 struct sk_buff *msg; 12210 void *hdr; 12211 12212 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12213 if (!msg) 12214 return; 12215 12216 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12217 if (!hdr) { 12218 nlmsg_free(msg); 12219 return; 12220 } 12221 12222 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12223 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12224 wdev->netdev->ifindex)) || 12225 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12226 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 12227 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 12228 NL80211_CHAN_NO_HT) || 12229 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 12230 goto nla_put_failure; 12231 12232 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 12233 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 12234 goto nla_put_failure; 12235 12236 genlmsg_end(msg, hdr); 12237 12238 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12239 NL80211_MCGRP_MLME, gfp); 12240 return; 12241 12242 nla_put_failure: 12243 genlmsg_cancel(msg, hdr); 12244 nlmsg_free(msg); 12245 } 12246 12247 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 12248 struct ieee80211_channel *chan, 12249 unsigned int duration, gfp_t gfp) 12250 { 12251 struct wiphy *wiphy = wdev->wiphy; 12252 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12253 12254 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 12255 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 12256 rdev, wdev, cookie, chan, 12257 duration, gfp); 12258 } 12259 EXPORT_SYMBOL(cfg80211_ready_on_channel); 12260 12261 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 12262 struct ieee80211_channel *chan, 12263 gfp_t gfp) 12264 { 12265 struct wiphy *wiphy = wdev->wiphy; 12266 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12267 12268 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 12269 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 12270 rdev, wdev, cookie, chan, 0, gfp); 12271 } 12272 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 12273 12274 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 12275 struct station_info *sinfo, gfp_t gfp) 12276 { 12277 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12278 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12279 struct sk_buff *msg; 12280 12281 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 12282 12283 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12284 if (!msg) 12285 return; 12286 12287 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 12288 rdev, dev, mac_addr, sinfo) < 0) { 12289 nlmsg_free(msg); 12290 return; 12291 } 12292 12293 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12294 NL80211_MCGRP_MLME, gfp); 12295 } 12296 EXPORT_SYMBOL(cfg80211_new_sta); 12297 12298 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 12299 struct station_info *sinfo, gfp_t gfp) 12300 { 12301 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12302 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12303 struct sk_buff *msg; 12304 struct station_info empty_sinfo = {}; 12305 12306 if (!sinfo) 12307 sinfo = &empty_sinfo; 12308 12309 trace_cfg80211_del_sta(dev, mac_addr); 12310 12311 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12312 if (!msg) 12313 return; 12314 12315 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 12316 rdev, dev, mac_addr, sinfo) < 0) { 12317 nlmsg_free(msg); 12318 return; 12319 } 12320 12321 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12322 NL80211_MCGRP_MLME, gfp); 12323 } 12324 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 12325 12326 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 12327 enum nl80211_connect_failed_reason reason, 12328 gfp_t gfp) 12329 { 12330 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12331 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12332 struct sk_buff *msg; 12333 void *hdr; 12334 12335 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 12336 if (!msg) 12337 return; 12338 12339 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 12340 if (!hdr) { 12341 nlmsg_free(msg); 12342 return; 12343 } 12344 12345 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12346 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 12347 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 12348 goto nla_put_failure; 12349 12350 genlmsg_end(msg, hdr); 12351 12352 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12353 NL80211_MCGRP_MLME, gfp); 12354 return; 12355 12356 nla_put_failure: 12357 genlmsg_cancel(msg, hdr); 12358 nlmsg_free(msg); 12359 } 12360 EXPORT_SYMBOL(cfg80211_conn_failed); 12361 12362 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 12363 const u8 *addr, gfp_t gfp) 12364 { 12365 struct wireless_dev *wdev = dev->ieee80211_ptr; 12366 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12367 struct sk_buff *msg; 12368 void *hdr; 12369 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 12370 12371 if (!nlportid) 12372 return false; 12373 12374 msg = nlmsg_new(100, gfp); 12375 if (!msg) 12376 return true; 12377 12378 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12379 if (!hdr) { 12380 nlmsg_free(msg); 12381 return true; 12382 } 12383 12384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12385 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12386 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 12387 goto nla_put_failure; 12388 12389 genlmsg_end(msg, hdr); 12390 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12391 return true; 12392 12393 nla_put_failure: 12394 genlmsg_cancel(msg, hdr); 12395 nlmsg_free(msg); 12396 return true; 12397 } 12398 12399 bool cfg80211_rx_spurious_frame(struct net_device *dev, 12400 const u8 *addr, gfp_t gfp) 12401 { 12402 struct wireless_dev *wdev = dev->ieee80211_ptr; 12403 bool ret; 12404 12405 trace_cfg80211_rx_spurious_frame(dev, addr); 12406 12407 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12408 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 12409 trace_cfg80211_return_bool(false); 12410 return false; 12411 } 12412 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 12413 addr, gfp); 12414 trace_cfg80211_return_bool(ret); 12415 return ret; 12416 } 12417 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 12418 12419 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 12420 const u8 *addr, gfp_t gfp) 12421 { 12422 struct wireless_dev *wdev = dev->ieee80211_ptr; 12423 bool ret; 12424 12425 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 12426 12427 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12428 wdev->iftype != NL80211_IFTYPE_P2P_GO && 12429 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 12430 trace_cfg80211_return_bool(false); 12431 return false; 12432 } 12433 ret = __nl80211_unexpected_frame(dev, 12434 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 12435 addr, gfp); 12436 trace_cfg80211_return_bool(ret); 12437 return ret; 12438 } 12439 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 12440 12441 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 12442 struct wireless_dev *wdev, u32 nlportid, 12443 int freq, int sig_dbm, 12444 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 12445 { 12446 struct net_device *netdev = wdev->netdev; 12447 struct sk_buff *msg; 12448 void *hdr; 12449 12450 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12451 if (!msg) 12452 return -ENOMEM; 12453 12454 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12455 if (!hdr) { 12456 nlmsg_free(msg); 12457 return -ENOMEM; 12458 } 12459 12460 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12461 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12462 netdev->ifindex)) || 12463 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12464 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 12465 (sig_dbm && 12466 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12467 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12468 (flags && 12469 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 12470 goto nla_put_failure; 12471 12472 genlmsg_end(msg, hdr); 12473 12474 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12475 12476 nla_put_failure: 12477 genlmsg_cancel(msg, hdr); 12478 nlmsg_free(msg); 12479 return -ENOBUFS; 12480 } 12481 12482 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 12483 const u8 *buf, size_t len, bool ack, gfp_t gfp) 12484 { 12485 struct wiphy *wiphy = wdev->wiphy; 12486 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12487 struct net_device *netdev = wdev->netdev; 12488 struct sk_buff *msg; 12489 void *hdr; 12490 12491 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 12492 12493 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12494 if (!msg) 12495 return; 12496 12497 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12498 if (!hdr) { 12499 nlmsg_free(msg); 12500 return; 12501 } 12502 12503 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12504 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12505 netdev->ifindex)) || 12506 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12507 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12508 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12509 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12510 goto nla_put_failure; 12511 12512 genlmsg_end(msg, hdr); 12513 12514 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12515 NL80211_MCGRP_MLME, gfp); 12516 return; 12517 12518 nla_put_failure: 12519 genlmsg_cancel(msg, hdr); 12520 nlmsg_free(msg); 12521 } 12522 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12523 12524 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12525 const char *mac, gfp_t gfp) 12526 { 12527 struct wireless_dev *wdev = dev->ieee80211_ptr; 12528 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12529 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12530 void **cb; 12531 12532 if (!msg) 12533 return NULL; 12534 12535 cb = (void **)msg->cb; 12536 12537 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12538 if (!cb[0]) { 12539 nlmsg_free(msg); 12540 return NULL; 12541 } 12542 12543 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12544 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12545 goto nla_put_failure; 12546 12547 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12548 goto nla_put_failure; 12549 12550 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12551 if (!cb[1]) 12552 goto nla_put_failure; 12553 12554 cb[2] = rdev; 12555 12556 return msg; 12557 nla_put_failure: 12558 nlmsg_free(msg); 12559 return NULL; 12560 } 12561 12562 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12563 { 12564 void **cb = (void **)msg->cb; 12565 struct cfg80211_registered_device *rdev = cb[2]; 12566 12567 nla_nest_end(msg, cb[1]); 12568 genlmsg_end(msg, cb[0]); 12569 12570 memset(msg->cb, 0, sizeof(msg->cb)); 12571 12572 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12573 NL80211_MCGRP_MLME, gfp); 12574 } 12575 12576 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12577 enum nl80211_cqm_rssi_threshold_event rssi_event, 12578 gfp_t gfp) 12579 { 12580 struct sk_buff *msg; 12581 12582 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12583 12584 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12585 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12586 return; 12587 12588 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12589 if (!msg) 12590 return; 12591 12592 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12593 rssi_event)) 12594 goto nla_put_failure; 12595 12596 cfg80211_send_cqm(msg, gfp); 12597 12598 return; 12599 12600 nla_put_failure: 12601 nlmsg_free(msg); 12602 } 12603 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12604 12605 void cfg80211_cqm_txe_notify(struct net_device *dev, 12606 const u8 *peer, u32 num_packets, 12607 u32 rate, u32 intvl, gfp_t gfp) 12608 { 12609 struct sk_buff *msg; 12610 12611 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12612 if (!msg) 12613 return; 12614 12615 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12616 goto nla_put_failure; 12617 12618 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12619 goto nla_put_failure; 12620 12621 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12622 goto nla_put_failure; 12623 12624 cfg80211_send_cqm(msg, gfp); 12625 return; 12626 12627 nla_put_failure: 12628 nlmsg_free(msg); 12629 } 12630 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12631 12632 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12633 const u8 *peer, u32 num_packets, gfp_t gfp) 12634 { 12635 struct sk_buff *msg; 12636 12637 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12638 12639 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12640 if (!msg) 12641 return; 12642 12643 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12644 goto nla_put_failure; 12645 12646 cfg80211_send_cqm(msg, gfp); 12647 return; 12648 12649 nla_put_failure: 12650 nlmsg_free(msg); 12651 } 12652 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12653 12654 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12655 { 12656 struct sk_buff *msg; 12657 12658 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12659 if (!msg) 12660 return; 12661 12662 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12663 goto nla_put_failure; 12664 12665 cfg80211_send_cqm(msg, gfp); 12666 return; 12667 12668 nla_put_failure: 12669 nlmsg_free(msg); 12670 } 12671 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 12672 12673 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 12674 struct net_device *netdev, const u8 *bssid, 12675 const u8 *replay_ctr, gfp_t gfp) 12676 { 12677 struct sk_buff *msg; 12678 struct nlattr *rekey_attr; 12679 void *hdr; 12680 12681 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12682 if (!msg) 12683 return; 12684 12685 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 12686 if (!hdr) { 12687 nlmsg_free(msg); 12688 return; 12689 } 12690 12691 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12692 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12693 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12694 goto nla_put_failure; 12695 12696 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 12697 if (!rekey_attr) 12698 goto nla_put_failure; 12699 12700 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 12701 NL80211_REPLAY_CTR_LEN, replay_ctr)) 12702 goto nla_put_failure; 12703 12704 nla_nest_end(msg, rekey_attr); 12705 12706 genlmsg_end(msg, hdr); 12707 12708 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12709 NL80211_MCGRP_MLME, gfp); 12710 return; 12711 12712 nla_put_failure: 12713 genlmsg_cancel(msg, hdr); 12714 nlmsg_free(msg); 12715 } 12716 12717 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 12718 const u8 *replay_ctr, gfp_t gfp) 12719 { 12720 struct wireless_dev *wdev = dev->ieee80211_ptr; 12721 struct wiphy *wiphy = wdev->wiphy; 12722 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12723 12724 trace_cfg80211_gtk_rekey_notify(dev, bssid); 12725 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 12726 } 12727 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 12728 12729 static void 12730 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 12731 struct net_device *netdev, int index, 12732 const u8 *bssid, bool preauth, gfp_t gfp) 12733 { 12734 struct sk_buff *msg; 12735 struct nlattr *attr; 12736 void *hdr; 12737 12738 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12739 if (!msg) 12740 return; 12741 12742 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 12743 if (!hdr) { 12744 nlmsg_free(msg); 12745 return; 12746 } 12747 12748 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12749 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12750 goto nla_put_failure; 12751 12752 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 12753 if (!attr) 12754 goto nla_put_failure; 12755 12756 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12757 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12758 (preauth && 12759 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12760 goto nla_put_failure; 12761 12762 nla_nest_end(msg, attr); 12763 12764 genlmsg_end(msg, hdr); 12765 12766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12767 NL80211_MCGRP_MLME, gfp); 12768 return; 12769 12770 nla_put_failure: 12771 genlmsg_cancel(msg, hdr); 12772 nlmsg_free(msg); 12773 } 12774 12775 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12776 const u8 *bssid, bool preauth, gfp_t gfp) 12777 { 12778 struct wireless_dev *wdev = dev->ieee80211_ptr; 12779 struct wiphy *wiphy = wdev->wiphy; 12780 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12781 12782 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12783 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12784 } 12785 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12786 12787 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12788 struct net_device *netdev, 12789 struct cfg80211_chan_def *chandef, 12790 gfp_t gfp, 12791 enum nl80211_commands notif, 12792 u8 count) 12793 { 12794 struct sk_buff *msg; 12795 void *hdr; 12796 12797 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12798 if (!msg) 12799 return; 12800 12801 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12802 if (!hdr) { 12803 nlmsg_free(msg); 12804 return; 12805 } 12806 12807 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12808 goto nla_put_failure; 12809 12810 if (nl80211_send_chandef(msg, chandef)) 12811 goto nla_put_failure; 12812 12813 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12814 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12815 goto nla_put_failure; 12816 12817 genlmsg_end(msg, hdr); 12818 12819 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12820 NL80211_MCGRP_MLME, gfp); 12821 return; 12822 12823 nla_put_failure: 12824 genlmsg_cancel(msg, hdr); 12825 nlmsg_free(msg); 12826 } 12827 12828 void cfg80211_ch_switch_notify(struct net_device *dev, 12829 struct cfg80211_chan_def *chandef) 12830 { 12831 struct wireless_dev *wdev = dev->ieee80211_ptr; 12832 struct wiphy *wiphy = wdev->wiphy; 12833 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12834 12835 ASSERT_WDEV_LOCK(wdev); 12836 12837 trace_cfg80211_ch_switch_notify(dev, chandef); 12838 12839 wdev->chandef = *chandef; 12840 wdev->preset_chandef = *chandef; 12841 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12842 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12843 } 12844 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12845 12846 void cfg80211_ch_switch_started_notify(struct net_device *dev, 12847 struct cfg80211_chan_def *chandef, 12848 u8 count) 12849 { 12850 struct wireless_dev *wdev = dev->ieee80211_ptr; 12851 struct wiphy *wiphy = wdev->wiphy; 12852 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12853 12854 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12855 12856 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12857 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12858 } 12859 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12860 12861 void 12862 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12863 const struct cfg80211_chan_def *chandef, 12864 enum nl80211_radar_event event, 12865 struct net_device *netdev, gfp_t gfp) 12866 { 12867 struct sk_buff *msg; 12868 void *hdr; 12869 12870 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12871 if (!msg) 12872 return; 12873 12874 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12875 if (!hdr) { 12876 nlmsg_free(msg); 12877 return; 12878 } 12879 12880 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12881 goto nla_put_failure; 12882 12883 /* NOP and radar events don't need a netdev parameter */ 12884 if (netdev) { 12885 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12886 12887 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12888 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12889 goto nla_put_failure; 12890 } 12891 12892 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12893 goto nla_put_failure; 12894 12895 if (nl80211_send_chandef(msg, chandef)) 12896 goto nla_put_failure; 12897 12898 genlmsg_end(msg, hdr); 12899 12900 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12901 NL80211_MCGRP_MLME, gfp); 12902 return; 12903 12904 nla_put_failure: 12905 genlmsg_cancel(msg, hdr); 12906 nlmsg_free(msg); 12907 } 12908 12909 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12910 u64 cookie, bool acked, gfp_t gfp) 12911 { 12912 struct wireless_dev *wdev = dev->ieee80211_ptr; 12913 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12914 struct sk_buff *msg; 12915 void *hdr; 12916 12917 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12918 12919 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12920 12921 if (!msg) 12922 return; 12923 12924 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12925 if (!hdr) { 12926 nlmsg_free(msg); 12927 return; 12928 } 12929 12930 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12931 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12932 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12933 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12934 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12935 goto nla_put_failure; 12936 12937 genlmsg_end(msg, hdr); 12938 12939 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12940 NL80211_MCGRP_MLME, gfp); 12941 return; 12942 12943 nla_put_failure: 12944 genlmsg_cancel(msg, hdr); 12945 nlmsg_free(msg); 12946 } 12947 EXPORT_SYMBOL(cfg80211_probe_status); 12948 12949 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12950 const u8 *frame, size_t len, 12951 int freq, int sig_dbm) 12952 { 12953 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12954 struct sk_buff *msg; 12955 void *hdr; 12956 struct cfg80211_beacon_registration *reg; 12957 12958 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12959 12960 spin_lock_bh(&rdev->beacon_registrations_lock); 12961 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12962 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12963 if (!msg) { 12964 spin_unlock_bh(&rdev->beacon_registrations_lock); 12965 return; 12966 } 12967 12968 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12969 if (!hdr) 12970 goto nla_put_failure; 12971 12972 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12973 (freq && 12974 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12975 (sig_dbm && 12976 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12977 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12978 goto nla_put_failure; 12979 12980 genlmsg_end(msg, hdr); 12981 12982 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12983 } 12984 spin_unlock_bh(&rdev->beacon_registrations_lock); 12985 return; 12986 12987 nla_put_failure: 12988 spin_unlock_bh(&rdev->beacon_registrations_lock); 12989 if (hdr) 12990 genlmsg_cancel(msg, hdr); 12991 nlmsg_free(msg); 12992 } 12993 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12994 12995 #ifdef CONFIG_PM 12996 static int cfg80211_net_detect_results(struct sk_buff *msg, 12997 struct cfg80211_wowlan_wakeup *wakeup) 12998 { 12999 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 13000 struct nlattr *nl_results, *nl_match, *nl_freqs; 13001 int i, j; 13002 13003 nl_results = nla_nest_start( 13004 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 13005 if (!nl_results) 13006 return -EMSGSIZE; 13007 13008 for (i = 0; i < nd->n_matches; i++) { 13009 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 13010 13011 nl_match = nla_nest_start(msg, i); 13012 if (!nl_match) 13013 break; 13014 13015 /* The SSID attribute is optional in nl80211, but for 13016 * simplicity reasons it's always present in the 13017 * cfg80211 structure. If a driver can't pass the 13018 * SSID, that needs to be changed. A zero length SSID 13019 * is still a valid SSID (wildcard), so it cannot be 13020 * used for this purpose. 13021 */ 13022 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 13023 match->ssid.ssid)) { 13024 nla_nest_cancel(msg, nl_match); 13025 goto out; 13026 } 13027 13028 if (match->n_channels) { 13029 nl_freqs = nla_nest_start( 13030 msg, NL80211_ATTR_SCAN_FREQUENCIES); 13031 if (!nl_freqs) { 13032 nla_nest_cancel(msg, nl_match); 13033 goto out; 13034 } 13035 13036 for (j = 0; j < match->n_channels; j++) { 13037 if (nla_put_u32(msg, j, match->channels[j])) { 13038 nla_nest_cancel(msg, nl_freqs); 13039 nla_nest_cancel(msg, nl_match); 13040 goto out; 13041 } 13042 } 13043 13044 nla_nest_end(msg, nl_freqs); 13045 } 13046 13047 nla_nest_end(msg, nl_match); 13048 } 13049 13050 out: 13051 nla_nest_end(msg, nl_results); 13052 return 0; 13053 } 13054 13055 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 13056 struct cfg80211_wowlan_wakeup *wakeup, 13057 gfp_t gfp) 13058 { 13059 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13060 struct sk_buff *msg; 13061 void *hdr; 13062 int size = 200; 13063 13064 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 13065 13066 if (wakeup) 13067 size += wakeup->packet_present_len; 13068 13069 msg = nlmsg_new(size, gfp); 13070 if (!msg) 13071 return; 13072 13073 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 13074 if (!hdr) 13075 goto free_msg; 13076 13077 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13078 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 13079 goto free_msg; 13080 13081 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13082 wdev->netdev->ifindex)) 13083 goto free_msg; 13084 13085 if (wakeup) { 13086 struct nlattr *reasons; 13087 13088 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 13089 if (!reasons) 13090 goto free_msg; 13091 13092 if (wakeup->disconnect && 13093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 13094 goto free_msg; 13095 if (wakeup->magic_pkt && 13096 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 13097 goto free_msg; 13098 if (wakeup->gtk_rekey_failure && 13099 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 13100 goto free_msg; 13101 if (wakeup->eap_identity_req && 13102 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 13103 goto free_msg; 13104 if (wakeup->four_way_handshake && 13105 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 13106 goto free_msg; 13107 if (wakeup->rfkill_release && 13108 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 13109 goto free_msg; 13110 13111 if (wakeup->pattern_idx >= 0 && 13112 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 13113 wakeup->pattern_idx)) 13114 goto free_msg; 13115 13116 if (wakeup->tcp_match && 13117 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 13118 goto free_msg; 13119 13120 if (wakeup->tcp_connlost && 13121 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 13122 goto free_msg; 13123 13124 if (wakeup->tcp_nomoretokens && 13125 nla_put_flag(msg, 13126 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 13127 goto free_msg; 13128 13129 if (wakeup->packet) { 13130 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 13131 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 13132 13133 if (!wakeup->packet_80211) { 13134 pkt_attr = 13135 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 13136 len_attr = 13137 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 13138 } 13139 13140 if (wakeup->packet_len && 13141 nla_put_u32(msg, len_attr, wakeup->packet_len)) 13142 goto free_msg; 13143 13144 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 13145 wakeup->packet)) 13146 goto free_msg; 13147 } 13148 13149 if (wakeup->net_detect && 13150 cfg80211_net_detect_results(msg, wakeup)) 13151 goto free_msg; 13152 13153 nla_nest_end(msg, reasons); 13154 } 13155 13156 genlmsg_end(msg, hdr); 13157 13158 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13159 NL80211_MCGRP_MLME, gfp); 13160 return; 13161 13162 free_msg: 13163 nlmsg_free(msg); 13164 } 13165 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 13166 #endif 13167 13168 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 13169 enum nl80211_tdls_operation oper, 13170 u16 reason_code, gfp_t gfp) 13171 { 13172 struct wireless_dev *wdev = dev->ieee80211_ptr; 13173 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13174 struct sk_buff *msg; 13175 void *hdr; 13176 13177 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 13178 reason_code); 13179 13180 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13181 if (!msg) 13182 return; 13183 13184 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 13185 if (!hdr) { 13186 nlmsg_free(msg); 13187 return; 13188 } 13189 13190 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13191 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13192 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 13193 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 13194 (reason_code > 0 && 13195 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 13196 goto nla_put_failure; 13197 13198 genlmsg_end(msg, hdr); 13199 13200 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13201 NL80211_MCGRP_MLME, gfp); 13202 return; 13203 13204 nla_put_failure: 13205 genlmsg_cancel(msg, hdr); 13206 nlmsg_free(msg); 13207 } 13208 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 13209 13210 static int nl80211_netlink_notify(struct notifier_block * nb, 13211 unsigned long state, 13212 void *_notify) 13213 { 13214 struct netlink_notify *notify = _notify; 13215 struct cfg80211_registered_device *rdev; 13216 struct wireless_dev *wdev; 13217 struct cfg80211_beacon_registration *reg, *tmp; 13218 13219 if (state != NETLINK_URELEASE) 13220 return NOTIFY_DONE; 13221 13222 rcu_read_lock(); 13223 13224 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 13225 bool schedule_destroy_work = false; 13226 bool schedule_scan_stop = false; 13227 struct cfg80211_sched_scan_request *sched_scan_req = 13228 rcu_dereference(rdev->sched_scan_req); 13229 13230 if (sched_scan_req && notify->portid && 13231 sched_scan_req->owner_nlportid == notify->portid) 13232 schedule_scan_stop = true; 13233 13234 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 13235 cfg80211_mlme_unregister_socket(wdev, notify->portid); 13236 13237 if (wdev->owner_nlportid == notify->portid) 13238 schedule_destroy_work = true; 13239 } 13240 13241 spin_lock_bh(&rdev->beacon_registrations_lock); 13242 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 13243 list) { 13244 if (reg->nlportid == notify->portid) { 13245 list_del(®->list); 13246 kfree(reg); 13247 break; 13248 } 13249 } 13250 spin_unlock_bh(&rdev->beacon_registrations_lock); 13251 13252 if (schedule_destroy_work) { 13253 struct cfg80211_iface_destroy *destroy; 13254 13255 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 13256 if (destroy) { 13257 destroy->nlportid = notify->portid; 13258 spin_lock(&rdev->destroy_list_lock); 13259 list_add(&destroy->list, &rdev->destroy_list); 13260 spin_unlock(&rdev->destroy_list_lock); 13261 schedule_work(&rdev->destroy_work); 13262 } 13263 } else if (schedule_scan_stop) { 13264 sched_scan_req->owner_nlportid = 0; 13265 13266 if (rdev->ops->sched_scan_stop && 13267 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 13268 schedule_work(&rdev->sched_scan_stop_wk); 13269 } 13270 } 13271 13272 rcu_read_unlock(); 13273 13274 /* 13275 * It is possible that the user space process that is controlling the 13276 * indoor setting disappeared, so notify the regulatory core. 13277 */ 13278 regulatory_netlink_notify(notify->portid); 13279 return NOTIFY_OK; 13280 } 13281 13282 static struct notifier_block nl80211_netlink_notifier = { 13283 .notifier_call = nl80211_netlink_notify, 13284 }; 13285 13286 void cfg80211_ft_event(struct net_device *netdev, 13287 struct cfg80211_ft_event_params *ft_event) 13288 { 13289 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 13290 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13291 struct sk_buff *msg; 13292 void *hdr; 13293 13294 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 13295 13296 if (!ft_event->target_ap) 13297 return; 13298 13299 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13300 if (!msg) 13301 return; 13302 13303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 13304 if (!hdr) 13305 goto out; 13306 13307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13308 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13309 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 13310 goto out; 13311 13312 if (ft_event->ies && 13313 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 13314 goto out; 13315 if (ft_event->ric_ies && 13316 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 13317 ft_event->ric_ies)) 13318 goto out; 13319 13320 genlmsg_end(msg, hdr); 13321 13322 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13323 NL80211_MCGRP_MLME, GFP_KERNEL); 13324 return; 13325 out: 13326 nlmsg_free(msg); 13327 } 13328 EXPORT_SYMBOL(cfg80211_ft_event); 13329 13330 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 13331 { 13332 struct cfg80211_registered_device *rdev; 13333 struct sk_buff *msg; 13334 void *hdr; 13335 u32 nlportid; 13336 13337 rdev = wiphy_to_rdev(wdev->wiphy); 13338 if (!rdev->crit_proto_nlportid) 13339 return; 13340 13341 nlportid = rdev->crit_proto_nlportid; 13342 rdev->crit_proto_nlportid = 0; 13343 13344 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13345 if (!msg) 13346 return; 13347 13348 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 13349 if (!hdr) 13350 goto nla_put_failure; 13351 13352 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13353 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 13354 goto nla_put_failure; 13355 13356 genlmsg_end(msg, hdr); 13357 13358 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 13359 return; 13360 13361 nla_put_failure: 13362 if (hdr) 13363 genlmsg_cancel(msg, hdr); 13364 nlmsg_free(msg); 13365 13366 } 13367 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 13368 13369 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 13370 { 13371 struct wiphy *wiphy = wdev->wiphy; 13372 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13373 struct sk_buff *msg; 13374 void *hdr; 13375 13376 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13377 if (!msg) 13378 return; 13379 13380 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 13381 if (!hdr) 13382 goto out; 13383 13384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13385 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 13386 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 13387 goto out; 13388 13389 genlmsg_end(msg, hdr); 13390 13391 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 13392 NL80211_MCGRP_MLME, GFP_KERNEL); 13393 return; 13394 out: 13395 nlmsg_free(msg); 13396 } 13397 13398 /* initialisation/exit functions */ 13399 13400 int nl80211_init(void) 13401 { 13402 int err; 13403 13404 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 13405 nl80211_mcgrps); 13406 if (err) 13407 return err; 13408 13409 err = netlink_register_notifier(&nl80211_netlink_notifier); 13410 if (err) 13411 goto err_out; 13412 13413 return 0; 13414 err_out: 13415 genl_unregister_family(&nl80211_fam); 13416 return err; 13417 } 13418 13419 void nl80211_exit(void) 13420 { 13421 netlink_unregister_notifier(&nl80211_netlink_notifier); 13422 genl_unregister_family(&nl80211_fam); 13423 } 13424