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 */ 7 8 #include <linux/if.h> 9 #include <linux/module.h> 10 #include <linux/err.h> 11 #include <linux/slab.h> 12 #include <linux/list.h> 13 #include <linux/if_ether.h> 14 #include <linux/ieee80211.h> 15 #include <linux/nl80211.h> 16 #include <linux/rtnetlink.h> 17 #include <linux/netlink.h> 18 #include <linux/etherdevice.h> 19 #include <net/net_namespace.h> 20 #include <net/genetlink.h> 21 #include <net/cfg80211.h> 22 #include <net/sock.h> 23 #include <net/inet_connection_sock.h> 24 #include "core.h" 25 #include "nl80211.h" 26 #include "reg.h" 27 #include "rdev-ops.h" 28 29 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 30 struct genl_info *info, 31 struct cfg80211_crypto_settings *settings, 32 int cipher_limit); 33 34 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 35 struct genl_info *info); 36 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 37 struct genl_info *info); 38 39 /* the netlink family */ 40 static struct genl_family nl80211_fam = { 41 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 42 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 43 .hdrsize = 0, /* no private header */ 44 .version = 1, /* no particular meaning now */ 45 .maxattr = NL80211_ATTR_MAX, 46 .netnsok = true, 47 .pre_doit = nl80211_pre_doit, 48 .post_doit = nl80211_post_doit, 49 }; 50 51 /* multicast groups */ 52 enum nl80211_multicast_groups { 53 NL80211_MCGRP_CONFIG, 54 NL80211_MCGRP_SCAN, 55 NL80211_MCGRP_REGULATORY, 56 NL80211_MCGRP_MLME, 57 NL80211_MCGRP_VENDOR, 58 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 59 }; 60 61 static const struct genl_multicast_group nl80211_mcgrps[] = { 62 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 63 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 64 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 65 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 66 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 67 #ifdef CONFIG_NL80211_TESTMODE 68 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 69 #endif 70 }; 71 72 /* returns ERR_PTR values */ 73 static struct wireless_dev * 74 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 75 { 76 struct cfg80211_registered_device *rdev; 77 struct wireless_dev *result = NULL; 78 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 79 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 80 u64 wdev_id; 81 int wiphy_idx = -1; 82 int ifidx = -1; 83 84 ASSERT_RTNL(); 85 86 if (!have_ifidx && !have_wdev_id) 87 return ERR_PTR(-EINVAL); 88 89 if (have_ifidx) 90 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 91 if (have_wdev_id) { 92 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 93 wiphy_idx = wdev_id >> 32; 94 } 95 96 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 97 struct wireless_dev *wdev; 98 99 if (wiphy_net(&rdev->wiphy) != netns) 100 continue; 101 102 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 103 continue; 104 105 list_for_each_entry(wdev, &rdev->wdev_list, list) { 106 if (have_ifidx && wdev->netdev && 107 wdev->netdev->ifindex == ifidx) { 108 result = wdev; 109 break; 110 } 111 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 112 result = wdev; 113 break; 114 } 115 } 116 117 if (result) 118 break; 119 } 120 121 if (result) 122 return result; 123 return ERR_PTR(-ENODEV); 124 } 125 126 static struct cfg80211_registered_device * 127 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 128 { 129 struct cfg80211_registered_device *rdev = NULL, *tmp; 130 struct net_device *netdev; 131 132 ASSERT_RTNL(); 133 134 if (!attrs[NL80211_ATTR_WIPHY] && 135 !attrs[NL80211_ATTR_IFINDEX] && 136 !attrs[NL80211_ATTR_WDEV]) 137 return ERR_PTR(-EINVAL); 138 139 if (attrs[NL80211_ATTR_WIPHY]) 140 rdev = cfg80211_rdev_by_wiphy_idx( 141 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 142 143 if (attrs[NL80211_ATTR_WDEV]) { 144 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 145 struct wireless_dev *wdev; 146 bool found = false; 147 148 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 149 if (tmp) { 150 /* make sure wdev exists */ 151 list_for_each_entry(wdev, &tmp->wdev_list, list) { 152 if (wdev->identifier != (u32)wdev_id) 153 continue; 154 found = true; 155 break; 156 } 157 158 if (!found) 159 tmp = NULL; 160 161 if (rdev && tmp != rdev) 162 return ERR_PTR(-EINVAL); 163 rdev = tmp; 164 } 165 } 166 167 if (attrs[NL80211_ATTR_IFINDEX]) { 168 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 169 netdev = __dev_get_by_index(netns, ifindex); 170 if (netdev) { 171 if (netdev->ieee80211_ptr) 172 tmp = wiphy_to_rdev( 173 netdev->ieee80211_ptr->wiphy); 174 else 175 tmp = NULL; 176 177 /* not wireless device -- return error */ 178 if (!tmp) 179 return ERR_PTR(-EINVAL); 180 181 /* mismatch -- return error */ 182 if (rdev && tmp != rdev) 183 return ERR_PTR(-EINVAL); 184 185 rdev = tmp; 186 } 187 } 188 189 if (!rdev) 190 return ERR_PTR(-ENODEV); 191 192 if (netns != wiphy_net(&rdev->wiphy)) 193 return ERR_PTR(-ENODEV); 194 195 return rdev; 196 } 197 198 /* 199 * This function returns a pointer to the driver 200 * that the genl_info item that is passed refers to. 201 * 202 * The result of this can be a PTR_ERR and hence must 203 * be checked with IS_ERR() for errors. 204 */ 205 static struct cfg80211_registered_device * 206 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 207 { 208 return __cfg80211_rdev_from_attrs(netns, info->attrs); 209 } 210 211 /* policy for the attributes */ 212 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 213 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 214 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 215 .len = 20-1 }, 216 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 217 218 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 219 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 220 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 221 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 222 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 223 224 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 225 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 226 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 227 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 228 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 229 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 230 231 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 232 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 233 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 234 235 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 236 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 237 238 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 239 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 240 .len = WLAN_MAX_KEY_LEN }, 241 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 242 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 243 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 244 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 245 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 246 247 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 248 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 249 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 250 .len = IEEE80211_MAX_DATA_LEN }, 251 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 252 .len = IEEE80211_MAX_DATA_LEN }, 253 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 254 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 255 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 256 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 257 .len = NL80211_MAX_SUPP_RATES }, 258 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 259 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 260 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 261 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 262 .len = IEEE80211_MAX_MESH_ID_LEN }, 263 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 264 265 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 266 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 267 268 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 269 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 270 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 271 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 272 .len = NL80211_MAX_SUPP_RATES }, 273 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 274 275 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 276 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 277 278 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 279 280 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 281 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 282 .len = IEEE80211_MAX_DATA_LEN }, 283 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 284 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 285 286 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 287 .len = IEEE80211_MAX_SSID_LEN }, 288 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 289 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 290 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 291 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 292 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 293 [NL80211_ATTR_STA_FLAGS2] = { 294 .len = sizeof(struct nl80211_sta_flag_update), 295 }, 296 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 297 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 298 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 299 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 300 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 301 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 302 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 303 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 304 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 305 .len = WLAN_PMKID_LEN }, 306 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 307 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 308 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 309 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 310 .len = IEEE80211_MAX_DATA_LEN }, 311 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 312 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 313 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 314 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 315 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 316 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 317 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 318 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 319 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 320 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 321 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 322 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 323 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 324 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 325 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 326 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 327 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 328 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 329 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 330 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 331 .len = IEEE80211_MAX_DATA_LEN }, 332 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 333 .len = IEEE80211_MAX_DATA_LEN }, 334 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 335 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 336 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 338 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 339 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 340 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 341 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 342 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 343 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 345 .len = IEEE80211_MAX_DATA_LEN }, 346 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 347 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 348 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 349 .len = NL80211_HT_CAPABILITY_LEN 350 }, 351 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 352 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 353 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 354 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 355 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 356 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 357 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 358 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 359 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 360 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 361 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 362 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 363 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 364 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 365 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 366 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 367 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 368 .len = NL80211_VHT_CAPABILITY_LEN, 369 }, 370 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 371 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 372 .len = IEEE80211_MAX_DATA_LEN }, 373 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 374 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 375 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 376 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 377 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 378 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 379 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 380 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 381 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 382 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 383 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 384 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 385 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 386 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 387 .len = IEEE80211_QOS_MAP_LEN_MAX }, 388 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 389 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 390 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 391 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 392 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 393 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 395 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 396 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 397 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 398 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 399 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 400 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 401 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 402 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 403 }; 404 405 /* policy for the key attributes */ 406 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 407 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 408 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 409 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 410 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 411 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 412 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 413 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 414 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 415 }; 416 417 /* policy for the key default flags */ 418 static const struct nla_policy 419 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 420 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 421 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 422 }; 423 424 /* policy for WoWLAN attributes */ 425 static const struct nla_policy 426 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 427 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 428 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 429 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 430 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 431 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 432 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 433 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 434 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 435 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 436 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 437 }; 438 439 static const struct nla_policy 440 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 441 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 442 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 443 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 444 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 445 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 447 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 448 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 449 }, 450 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 451 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 452 }, 453 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 454 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 455 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 456 }; 457 458 /* policy for coalesce rule attributes */ 459 static const struct nla_policy 460 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 461 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 462 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 463 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 464 }; 465 466 /* policy for GTK rekey offload attributes */ 467 static const struct nla_policy 468 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 469 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 470 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 471 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 472 }; 473 474 static const struct nla_policy 475 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 476 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 477 .len = IEEE80211_MAX_SSID_LEN }, 478 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 479 }; 480 481 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 482 struct netlink_callback *cb, 483 struct cfg80211_registered_device **rdev, 484 struct wireless_dev **wdev) 485 { 486 int err; 487 488 rtnl_lock(); 489 490 if (!cb->args[0]) { 491 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 492 nl80211_fam.attrbuf, nl80211_fam.maxattr, 493 nl80211_policy); 494 if (err) 495 goto out_unlock; 496 497 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 498 nl80211_fam.attrbuf); 499 if (IS_ERR(*wdev)) { 500 err = PTR_ERR(*wdev); 501 goto out_unlock; 502 } 503 *rdev = wiphy_to_rdev((*wdev)->wiphy); 504 /* 0 is the first index - add 1 to parse only once */ 505 cb->args[0] = (*rdev)->wiphy_idx + 1; 506 cb->args[1] = (*wdev)->identifier; 507 } else { 508 /* subtract the 1 again here */ 509 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 510 struct wireless_dev *tmp; 511 512 if (!wiphy) { 513 err = -ENODEV; 514 goto out_unlock; 515 } 516 *rdev = wiphy_to_rdev(wiphy); 517 *wdev = NULL; 518 519 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 520 if (tmp->identifier == cb->args[1]) { 521 *wdev = tmp; 522 break; 523 } 524 } 525 526 if (!*wdev) { 527 err = -ENODEV; 528 goto out_unlock; 529 } 530 } 531 532 return 0; 533 out_unlock: 534 rtnl_unlock(); 535 return err; 536 } 537 538 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 539 { 540 rtnl_unlock(); 541 } 542 543 /* IE validation */ 544 static bool is_valid_ie_attr(const struct nlattr *attr) 545 { 546 const u8 *pos; 547 int len; 548 549 if (!attr) 550 return true; 551 552 pos = nla_data(attr); 553 len = nla_len(attr); 554 555 while (len) { 556 u8 elemlen; 557 558 if (len < 2) 559 return false; 560 len -= 2; 561 562 elemlen = pos[1]; 563 if (elemlen > len) 564 return false; 565 566 len -= elemlen; 567 pos += 2 + elemlen; 568 } 569 570 return true; 571 } 572 573 /* message building helper */ 574 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 575 int flags, u8 cmd) 576 { 577 /* since there is no private header just add the generic one */ 578 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 579 } 580 581 static int nl80211_msg_put_channel(struct sk_buff *msg, 582 struct ieee80211_channel *chan, 583 bool large) 584 { 585 /* Some channels must be completely excluded from the 586 * list to protect old user-space tools from breaking 587 */ 588 if (!large && chan->flags & 589 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 590 return 0; 591 592 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 593 chan->center_freq)) 594 goto nla_put_failure; 595 596 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 597 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 598 goto nla_put_failure; 599 if (chan->flags & IEEE80211_CHAN_NO_IR) { 600 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 601 goto nla_put_failure; 602 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 603 goto nla_put_failure; 604 } 605 if (chan->flags & IEEE80211_CHAN_RADAR) { 606 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 607 goto nla_put_failure; 608 if (large) { 609 u32 time; 610 611 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 612 613 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 614 chan->dfs_state)) 615 goto nla_put_failure; 616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 617 time)) 618 goto nla_put_failure; 619 if (nla_put_u32(msg, 620 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 621 chan->dfs_cac_ms)) 622 goto nla_put_failure; 623 } 624 } 625 626 if (large) { 627 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 628 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 629 goto nla_put_failure; 630 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 631 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 632 goto nla_put_failure; 633 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 634 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 635 goto nla_put_failure; 636 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 637 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 638 goto nla_put_failure; 639 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 640 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 641 goto nla_put_failure; 642 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 643 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 644 goto nla_put_failure; 645 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 646 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 647 goto nla_put_failure; 648 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 649 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 650 goto nla_put_failure; 651 } 652 653 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 654 DBM_TO_MBM(chan->max_power))) 655 goto nla_put_failure; 656 657 return 0; 658 659 nla_put_failure: 660 return -ENOBUFS; 661 } 662 663 /* netlink command implementations */ 664 665 struct key_parse { 666 struct key_params p; 667 int idx; 668 int type; 669 bool def, defmgmt; 670 bool def_uni, def_multi; 671 }; 672 673 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 674 { 675 struct nlattr *tb[NL80211_KEY_MAX + 1]; 676 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 677 nl80211_key_policy); 678 if (err) 679 return err; 680 681 k->def = !!tb[NL80211_KEY_DEFAULT]; 682 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 683 684 if (k->def) { 685 k->def_uni = true; 686 k->def_multi = true; 687 } 688 if (k->defmgmt) 689 k->def_multi = true; 690 691 if (tb[NL80211_KEY_IDX]) 692 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 693 694 if (tb[NL80211_KEY_DATA]) { 695 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 696 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 697 } 698 699 if (tb[NL80211_KEY_SEQ]) { 700 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 701 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 702 } 703 704 if (tb[NL80211_KEY_CIPHER]) 705 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 706 707 if (tb[NL80211_KEY_TYPE]) { 708 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 709 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 710 return -EINVAL; 711 } 712 713 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 714 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 715 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 716 tb[NL80211_KEY_DEFAULT_TYPES], 717 nl80211_key_default_policy); 718 if (err) 719 return err; 720 721 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 722 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 723 } 724 725 return 0; 726 } 727 728 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 729 { 730 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 731 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 732 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 733 } 734 735 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 736 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 737 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 738 } 739 740 if (info->attrs[NL80211_ATTR_KEY_IDX]) 741 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 742 743 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 744 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 745 746 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 747 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 748 749 if (k->def) { 750 k->def_uni = true; 751 k->def_multi = true; 752 } 753 if (k->defmgmt) 754 k->def_multi = true; 755 756 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 757 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 758 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 759 return -EINVAL; 760 } 761 762 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 763 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 764 int err = nla_parse_nested( 765 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 766 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 767 nl80211_key_default_policy); 768 if (err) 769 return err; 770 771 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 772 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 773 } 774 775 return 0; 776 } 777 778 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 779 { 780 int err; 781 782 memset(k, 0, sizeof(*k)); 783 k->idx = -1; 784 k->type = -1; 785 786 if (info->attrs[NL80211_ATTR_KEY]) 787 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 788 else 789 err = nl80211_parse_key_old(info, k); 790 791 if (err) 792 return err; 793 794 if (k->def && k->defmgmt) 795 return -EINVAL; 796 797 if (k->defmgmt) { 798 if (k->def_uni || !k->def_multi) 799 return -EINVAL; 800 } 801 802 if (k->idx != -1) { 803 if (k->defmgmt) { 804 if (k->idx < 4 || k->idx > 5) 805 return -EINVAL; 806 } else if (k->def) { 807 if (k->idx < 0 || k->idx > 3) 808 return -EINVAL; 809 } else { 810 if (k->idx < 0 || k->idx > 5) 811 return -EINVAL; 812 } 813 } 814 815 return 0; 816 } 817 818 static struct cfg80211_cached_keys * 819 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 820 struct nlattr *keys, bool *no_ht) 821 { 822 struct key_parse parse; 823 struct nlattr *key; 824 struct cfg80211_cached_keys *result; 825 int rem, err, def = 0; 826 827 result = kzalloc(sizeof(*result), GFP_KERNEL); 828 if (!result) 829 return ERR_PTR(-ENOMEM); 830 831 result->def = -1; 832 result->defmgmt = -1; 833 834 nla_for_each_nested(key, keys, rem) { 835 memset(&parse, 0, sizeof(parse)); 836 parse.idx = -1; 837 838 err = nl80211_parse_key_new(key, &parse); 839 if (err) 840 goto error; 841 err = -EINVAL; 842 if (!parse.p.key) 843 goto error; 844 if (parse.idx < 0 || parse.idx > 4) 845 goto error; 846 if (parse.def) { 847 if (def) 848 goto error; 849 def = 1; 850 result->def = parse.idx; 851 if (!parse.def_uni || !parse.def_multi) 852 goto error; 853 } else if (parse.defmgmt) 854 goto error; 855 err = cfg80211_validate_key_settings(rdev, &parse.p, 856 parse.idx, false, NULL); 857 if (err) 858 goto error; 859 result->params[parse.idx].cipher = parse.p.cipher; 860 result->params[parse.idx].key_len = parse.p.key_len; 861 result->params[parse.idx].key = result->data[parse.idx]; 862 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 863 864 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 865 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 866 if (no_ht) 867 *no_ht = true; 868 } 869 } 870 871 return result; 872 error: 873 kfree(result); 874 return ERR_PTR(err); 875 } 876 877 static int nl80211_key_allowed(struct wireless_dev *wdev) 878 { 879 ASSERT_WDEV_LOCK(wdev); 880 881 switch (wdev->iftype) { 882 case NL80211_IFTYPE_AP: 883 case NL80211_IFTYPE_AP_VLAN: 884 case NL80211_IFTYPE_P2P_GO: 885 case NL80211_IFTYPE_MESH_POINT: 886 break; 887 case NL80211_IFTYPE_ADHOC: 888 case NL80211_IFTYPE_STATION: 889 case NL80211_IFTYPE_P2P_CLIENT: 890 if (!wdev->current_bss) 891 return -ENOLINK; 892 break; 893 case NL80211_IFTYPE_UNSPECIFIED: 894 case NL80211_IFTYPE_OCB: 895 case NL80211_IFTYPE_MONITOR: 896 case NL80211_IFTYPE_P2P_DEVICE: 897 case NL80211_IFTYPE_WDS: 898 case NUM_NL80211_IFTYPES: 899 return -EINVAL; 900 } 901 902 return 0; 903 } 904 905 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 906 struct nlattr *tb) 907 { 908 struct ieee80211_channel *chan; 909 910 if (tb == NULL) 911 return NULL; 912 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 913 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 914 return NULL; 915 return chan; 916 } 917 918 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 919 { 920 struct nlattr *nl_modes = nla_nest_start(msg, attr); 921 int i; 922 923 if (!nl_modes) 924 goto nla_put_failure; 925 926 i = 0; 927 while (ifmodes) { 928 if ((ifmodes & 1) && nla_put_flag(msg, i)) 929 goto nla_put_failure; 930 ifmodes >>= 1; 931 i++; 932 } 933 934 nla_nest_end(msg, nl_modes); 935 return 0; 936 937 nla_put_failure: 938 return -ENOBUFS; 939 } 940 941 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 942 struct sk_buff *msg, 943 bool large) 944 { 945 struct nlattr *nl_combis; 946 int i, j; 947 948 nl_combis = nla_nest_start(msg, 949 NL80211_ATTR_INTERFACE_COMBINATIONS); 950 if (!nl_combis) 951 goto nla_put_failure; 952 953 for (i = 0; i < wiphy->n_iface_combinations; i++) { 954 const struct ieee80211_iface_combination *c; 955 struct nlattr *nl_combi, *nl_limits; 956 957 c = &wiphy->iface_combinations[i]; 958 959 nl_combi = nla_nest_start(msg, i + 1); 960 if (!nl_combi) 961 goto nla_put_failure; 962 963 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 964 if (!nl_limits) 965 goto nla_put_failure; 966 967 for (j = 0; j < c->n_limits; j++) { 968 struct nlattr *nl_limit; 969 970 nl_limit = nla_nest_start(msg, j + 1); 971 if (!nl_limit) 972 goto nla_put_failure; 973 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 974 c->limits[j].max)) 975 goto nla_put_failure; 976 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 977 c->limits[j].types)) 978 goto nla_put_failure; 979 nla_nest_end(msg, nl_limit); 980 } 981 982 nla_nest_end(msg, nl_limits); 983 984 if (c->beacon_int_infra_match && 985 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 986 goto nla_put_failure; 987 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 988 c->num_different_channels) || 989 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 990 c->max_interfaces)) 991 goto nla_put_failure; 992 if (large && 993 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 994 c->radar_detect_widths) || 995 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 996 c->radar_detect_regions))) 997 goto nla_put_failure; 998 999 nla_nest_end(msg, nl_combi); 1000 } 1001 1002 nla_nest_end(msg, nl_combis); 1003 1004 return 0; 1005 nla_put_failure: 1006 return -ENOBUFS; 1007 } 1008 1009 #ifdef CONFIG_PM 1010 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1011 struct sk_buff *msg) 1012 { 1013 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1014 struct nlattr *nl_tcp; 1015 1016 if (!tcp) 1017 return 0; 1018 1019 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1020 if (!nl_tcp) 1021 return -ENOBUFS; 1022 1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1024 tcp->data_payload_max)) 1025 return -ENOBUFS; 1026 1027 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1028 tcp->data_payload_max)) 1029 return -ENOBUFS; 1030 1031 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1032 return -ENOBUFS; 1033 1034 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1035 sizeof(*tcp->tok), tcp->tok)) 1036 return -ENOBUFS; 1037 1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1039 tcp->data_interval_max)) 1040 return -ENOBUFS; 1041 1042 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1043 tcp->wake_payload_max)) 1044 return -ENOBUFS; 1045 1046 nla_nest_end(msg, nl_tcp); 1047 return 0; 1048 } 1049 1050 static int nl80211_send_wowlan(struct sk_buff *msg, 1051 struct cfg80211_registered_device *rdev, 1052 bool large) 1053 { 1054 struct nlattr *nl_wowlan; 1055 1056 if (!rdev->wiphy.wowlan) 1057 return 0; 1058 1059 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1060 if (!nl_wowlan) 1061 return -ENOBUFS; 1062 1063 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1075 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1076 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1077 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1078 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1079 return -ENOBUFS; 1080 1081 if (rdev->wiphy.wowlan->n_patterns) { 1082 struct nl80211_pattern_support pat = { 1083 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1084 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1085 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1086 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1087 }; 1088 1089 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1090 sizeof(pat), &pat)) 1091 return -ENOBUFS; 1092 } 1093 1094 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1095 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1096 rdev->wiphy.wowlan->max_nd_match_sets)) 1097 return -ENOBUFS; 1098 1099 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1100 return -ENOBUFS; 1101 1102 nla_nest_end(msg, nl_wowlan); 1103 1104 return 0; 1105 } 1106 #endif 1107 1108 static int nl80211_send_coalesce(struct sk_buff *msg, 1109 struct cfg80211_registered_device *rdev) 1110 { 1111 struct nl80211_coalesce_rule_support rule; 1112 1113 if (!rdev->wiphy.coalesce) 1114 return 0; 1115 1116 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1117 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1118 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1119 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1120 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1121 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1122 1123 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1124 return -ENOBUFS; 1125 1126 return 0; 1127 } 1128 1129 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1130 struct ieee80211_supported_band *sband) 1131 { 1132 struct nlattr *nl_rates, *nl_rate; 1133 struct ieee80211_rate *rate; 1134 int i; 1135 1136 /* add HT info */ 1137 if (sband->ht_cap.ht_supported && 1138 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1139 sizeof(sband->ht_cap.mcs), 1140 &sband->ht_cap.mcs) || 1141 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1142 sband->ht_cap.cap) || 1143 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1144 sband->ht_cap.ampdu_factor) || 1145 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1146 sband->ht_cap.ampdu_density))) 1147 return -ENOBUFS; 1148 1149 /* add VHT info */ 1150 if (sband->vht_cap.vht_supported && 1151 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1152 sizeof(sband->vht_cap.vht_mcs), 1153 &sband->vht_cap.vht_mcs) || 1154 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1155 sband->vht_cap.cap))) 1156 return -ENOBUFS; 1157 1158 /* add bitrates */ 1159 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1160 if (!nl_rates) 1161 return -ENOBUFS; 1162 1163 for (i = 0; i < sband->n_bitrates; i++) { 1164 nl_rate = nla_nest_start(msg, i); 1165 if (!nl_rate) 1166 return -ENOBUFS; 1167 1168 rate = &sband->bitrates[i]; 1169 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1170 rate->bitrate)) 1171 return -ENOBUFS; 1172 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1173 nla_put_flag(msg, 1174 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1175 return -ENOBUFS; 1176 1177 nla_nest_end(msg, nl_rate); 1178 } 1179 1180 nla_nest_end(msg, nl_rates); 1181 1182 return 0; 1183 } 1184 1185 static int 1186 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1187 const struct ieee80211_txrx_stypes *mgmt_stypes) 1188 { 1189 u16 stypes; 1190 struct nlattr *nl_ftypes, *nl_ifs; 1191 enum nl80211_iftype ift; 1192 int i; 1193 1194 if (!mgmt_stypes) 1195 return 0; 1196 1197 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1198 if (!nl_ifs) 1199 return -ENOBUFS; 1200 1201 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1202 nl_ftypes = nla_nest_start(msg, ift); 1203 if (!nl_ftypes) 1204 return -ENOBUFS; 1205 i = 0; 1206 stypes = mgmt_stypes[ift].tx; 1207 while (stypes) { 1208 if ((stypes & 1) && 1209 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1210 (i << 4) | IEEE80211_FTYPE_MGMT)) 1211 return -ENOBUFS; 1212 stypes >>= 1; 1213 i++; 1214 } 1215 nla_nest_end(msg, nl_ftypes); 1216 } 1217 1218 nla_nest_end(msg, nl_ifs); 1219 1220 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1221 if (!nl_ifs) 1222 return -ENOBUFS; 1223 1224 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1225 nl_ftypes = nla_nest_start(msg, ift); 1226 if (!nl_ftypes) 1227 return -ENOBUFS; 1228 i = 0; 1229 stypes = mgmt_stypes[ift].rx; 1230 while (stypes) { 1231 if ((stypes & 1) && 1232 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1233 (i << 4) | IEEE80211_FTYPE_MGMT)) 1234 return -ENOBUFS; 1235 stypes >>= 1; 1236 i++; 1237 } 1238 nla_nest_end(msg, nl_ftypes); 1239 } 1240 nla_nest_end(msg, nl_ifs); 1241 1242 return 0; 1243 } 1244 1245 struct nl80211_dump_wiphy_state { 1246 s64 filter_wiphy; 1247 long start; 1248 long split_start, band_start, chan_start; 1249 bool split; 1250 }; 1251 1252 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1253 enum nl80211_commands cmd, 1254 struct sk_buff *msg, u32 portid, u32 seq, 1255 int flags, struct nl80211_dump_wiphy_state *state) 1256 { 1257 void *hdr; 1258 struct nlattr *nl_bands, *nl_band; 1259 struct nlattr *nl_freqs, *nl_freq; 1260 struct nlattr *nl_cmds; 1261 enum ieee80211_band band; 1262 struct ieee80211_channel *chan; 1263 int i; 1264 const struct ieee80211_txrx_stypes *mgmt_stypes = 1265 rdev->wiphy.mgmt_stypes; 1266 u32 features; 1267 1268 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1269 if (!hdr) 1270 return -ENOBUFS; 1271 1272 if (WARN_ON(!state)) 1273 return -EINVAL; 1274 1275 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1276 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1277 wiphy_name(&rdev->wiphy)) || 1278 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1279 cfg80211_rdev_list_generation)) 1280 goto nla_put_failure; 1281 1282 if (cmd != NL80211_CMD_NEW_WIPHY) 1283 goto finish; 1284 1285 switch (state->split_start) { 1286 case 0: 1287 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1288 rdev->wiphy.retry_short) || 1289 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1290 rdev->wiphy.retry_long) || 1291 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1292 rdev->wiphy.frag_threshold) || 1293 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1294 rdev->wiphy.rts_threshold) || 1295 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1296 rdev->wiphy.coverage_class) || 1297 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1298 rdev->wiphy.max_scan_ssids) || 1299 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1300 rdev->wiphy.max_sched_scan_ssids) || 1301 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1302 rdev->wiphy.max_scan_ie_len) || 1303 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1304 rdev->wiphy.max_sched_scan_ie_len) || 1305 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1306 rdev->wiphy.max_match_sets)) 1307 goto nla_put_failure; 1308 1309 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1310 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1311 goto nla_put_failure; 1312 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1313 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1314 goto nla_put_failure; 1315 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1316 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1317 goto nla_put_failure; 1318 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1319 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1320 goto nla_put_failure; 1321 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1322 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1323 goto nla_put_failure; 1324 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1325 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1326 goto nla_put_failure; 1327 state->split_start++; 1328 if (state->split) 1329 break; 1330 case 1: 1331 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1332 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1333 rdev->wiphy.cipher_suites)) 1334 goto nla_put_failure; 1335 1336 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1337 rdev->wiphy.max_num_pmkids)) 1338 goto nla_put_failure; 1339 1340 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1341 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1342 goto nla_put_failure; 1343 1344 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1345 rdev->wiphy.available_antennas_tx) || 1346 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1347 rdev->wiphy.available_antennas_rx)) 1348 goto nla_put_failure; 1349 1350 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1351 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1352 rdev->wiphy.probe_resp_offload)) 1353 goto nla_put_failure; 1354 1355 if ((rdev->wiphy.available_antennas_tx || 1356 rdev->wiphy.available_antennas_rx) && 1357 rdev->ops->get_antenna) { 1358 u32 tx_ant = 0, rx_ant = 0; 1359 int res; 1360 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1361 if (!res) { 1362 if (nla_put_u32(msg, 1363 NL80211_ATTR_WIPHY_ANTENNA_TX, 1364 tx_ant) || 1365 nla_put_u32(msg, 1366 NL80211_ATTR_WIPHY_ANTENNA_RX, 1367 rx_ant)) 1368 goto nla_put_failure; 1369 } 1370 } 1371 1372 state->split_start++; 1373 if (state->split) 1374 break; 1375 case 2: 1376 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1377 rdev->wiphy.interface_modes)) 1378 goto nla_put_failure; 1379 state->split_start++; 1380 if (state->split) 1381 break; 1382 case 3: 1383 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1384 if (!nl_bands) 1385 goto nla_put_failure; 1386 1387 for (band = state->band_start; 1388 band < IEEE80211_NUM_BANDS; band++) { 1389 struct ieee80211_supported_band *sband; 1390 1391 sband = rdev->wiphy.bands[band]; 1392 1393 if (!sband) 1394 continue; 1395 1396 nl_band = nla_nest_start(msg, band); 1397 if (!nl_band) 1398 goto nla_put_failure; 1399 1400 switch (state->chan_start) { 1401 case 0: 1402 if (nl80211_send_band_rateinfo(msg, sband)) 1403 goto nla_put_failure; 1404 state->chan_start++; 1405 if (state->split) 1406 break; 1407 default: 1408 /* add frequencies */ 1409 nl_freqs = nla_nest_start( 1410 msg, NL80211_BAND_ATTR_FREQS); 1411 if (!nl_freqs) 1412 goto nla_put_failure; 1413 1414 for (i = state->chan_start - 1; 1415 i < sband->n_channels; 1416 i++) { 1417 nl_freq = nla_nest_start(msg, i); 1418 if (!nl_freq) 1419 goto nla_put_failure; 1420 1421 chan = &sband->channels[i]; 1422 1423 if (nl80211_msg_put_channel( 1424 msg, chan, 1425 state->split)) 1426 goto nla_put_failure; 1427 1428 nla_nest_end(msg, nl_freq); 1429 if (state->split) 1430 break; 1431 } 1432 if (i < sband->n_channels) 1433 state->chan_start = i + 2; 1434 else 1435 state->chan_start = 0; 1436 nla_nest_end(msg, nl_freqs); 1437 } 1438 1439 nla_nest_end(msg, nl_band); 1440 1441 if (state->split) { 1442 /* start again here */ 1443 if (state->chan_start) 1444 band--; 1445 break; 1446 } 1447 } 1448 nla_nest_end(msg, nl_bands); 1449 1450 if (band < IEEE80211_NUM_BANDS) 1451 state->band_start = band + 1; 1452 else 1453 state->band_start = 0; 1454 1455 /* if bands & channels are done, continue outside */ 1456 if (state->band_start == 0 && state->chan_start == 0) 1457 state->split_start++; 1458 if (state->split) 1459 break; 1460 case 4: 1461 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1462 if (!nl_cmds) 1463 goto nla_put_failure; 1464 1465 i = 0; 1466 #define CMD(op, n) \ 1467 do { \ 1468 if (rdev->ops->op) { \ 1469 i++; \ 1470 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1471 goto nla_put_failure; \ 1472 } \ 1473 } while (0) 1474 1475 CMD(add_virtual_intf, NEW_INTERFACE); 1476 CMD(change_virtual_intf, SET_INTERFACE); 1477 CMD(add_key, NEW_KEY); 1478 CMD(start_ap, START_AP); 1479 CMD(add_station, NEW_STATION); 1480 CMD(add_mpath, NEW_MPATH); 1481 CMD(update_mesh_config, SET_MESH_CONFIG); 1482 CMD(change_bss, SET_BSS); 1483 CMD(auth, AUTHENTICATE); 1484 CMD(assoc, ASSOCIATE); 1485 CMD(deauth, DEAUTHENTICATE); 1486 CMD(disassoc, DISASSOCIATE); 1487 CMD(join_ibss, JOIN_IBSS); 1488 CMD(join_mesh, JOIN_MESH); 1489 CMD(set_pmksa, SET_PMKSA); 1490 CMD(del_pmksa, DEL_PMKSA); 1491 CMD(flush_pmksa, FLUSH_PMKSA); 1492 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1493 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1494 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1495 CMD(mgmt_tx, FRAME); 1496 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1497 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1498 i++; 1499 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1500 goto nla_put_failure; 1501 } 1502 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1503 rdev->ops->join_mesh) { 1504 i++; 1505 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1506 goto nla_put_failure; 1507 } 1508 CMD(set_wds_peer, SET_WDS_PEER); 1509 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1510 CMD(tdls_mgmt, TDLS_MGMT); 1511 CMD(tdls_oper, TDLS_OPER); 1512 } 1513 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1514 CMD(sched_scan_start, START_SCHED_SCAN); 1515 CMD(probe_client, PROBE_CLIENT); 1516 CMD(set_noack_map, SET_NOACK_MAP); 1517 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1518 i++; 1519 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1520 goto nla_put_failure; 1521 } 1522 CMD(start_p2p_device, START_P2P_DEVICE); 1523 CMD(set_mcast_rate, SET_MCAST_RATE); 1524 #ifdef CONFIG_NL80211_TESTMODE 1525 CMD(testmode_cmd, TESTMODE); 1526 #endif 1527 if (state->split) { 1528 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1529 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1530 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1531 CMD(channel_switch, CHANNEL_SWITCH); 1532 CMD(set_qos_map, SET_QOS_MAP); 1533 if (rdev->wiphy.features & 1534 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1535 CMD(add_tx_ts, ADD_TX_TS); 1536 } 1537 /* add into the if now */ 1538 #undef CMD 1539 1540 if (rdev->ops->connect || rdev->ops->auth) { 1541 i++; 1542 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1543 goto nla_put_failure; 1544 } 1545 1546 if (rdev->ops->disconnect || rdev->ops->deauth) { 1547 i++; 1548 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1549 goto nla_put_failure; 1550 } 1551 1552 nla_nest_end(msg, nl_cmds); 1553 state->split_start++; 1554 if (state->split) 1555 break; 1556 case 5: 1557 if (rdev->ops->remain_on_channel && 1558 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1559 nla_put_u32(msg, 1560 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1561 rdev->wiphy.max_remain_on_channel_duration)) 1562 goto nla_put_failure; 1563 1564 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1565 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1566 goto nla_put_failure; 1567 1568 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1569 goto nla_put_failure; 1570 state->split_start++; 1571 if (state->split) 1572 break; 1573 case 6: 1574 #ifdef CONFIG_PM 1575 if (nl80211_send_wowlan(msg, rdev, state->split)) 1576 goto nla_put_failure; 1577 state->split_start++; 1578 if (state->split) 1579 break; 1580 #else 1581 state->split_start++; 1582 #endif 1583 case 7: 1584 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1585 rdev->wiphy.software_iftypes)) 1586 goto nla_put_failure; 1587 1588 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1589 state->split)) 1590 goto nla_put_failure; 1591 1592 state->split_start++; 1593 if (state->split) 1594 break; 1595 case 8: 1596 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1597 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1598 rdev->wiphy.ap_sme_capa)) 1599 goto nla_put_failure; 1600 1601 features = rdev->wiphy.features; 1602 /* 1603 * We can only add the per-channel limit information if the 1604 * dump is split, otherwise it makes it too big. Therefore 1605 * only advertise it in that case. 1606 */ 1607 if (state->split) 1608 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1609 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1610 goto nla_put_failure; 1611 1612 if (rdev->wiphy.ht_capa_mod_mask && 1613 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1614 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1615 rdev->wiphy.ht_capa_mod_mask)) 1616 goto nla_put_failure; 1617 1618 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1619 rdev->wiphy.max_acl_mac_addrs && 1620 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1621 rdev->wiphy.max_acl_mac_addrs)) 1622 goto nla_put_failure; 1623 1624 /* 1625 * Any information below this point is only available to 1626 * applications that can deal with it being split. This 1627 * helps ensure that newly added capabilities don't break 1628 * older tools by overrunning their buffers. 1629 * 1630 * We still increment split_start so that in the split 1631 * case we'll continue with more data in the next round, 1632 * but break unconditionally so unsplit data stops here. 1633 */ 1634 state->split_start++; 1635 break; 1636 case 9: 1637 if (rdev->wiphy.extended_capabilities && 1638 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1639 rdev->wiphy.extended_capabilities_len, 1640 rdev->wiphy.extended_capabilities) || 1641 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1642 rdev->wiphy.extended_capabilities_len, 1643 rdev->wiphy.extended_capabilities_mask))) 1644 goto nla_put_failure; 1645 1646 if (rdev->wiphy.vht_capa_mod_mask && 1647 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1648 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1649 rdev->wiphy.vht_capa_mod_mask)) 1650 goto nla_put_failure; 1651 1652 state->split_start++; 1653 break; 1654 case 10: 1655 if (nl80211_send_coalesce(msg, rdev)) 1656 goto nla_put_failure; 1657 1658 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1659 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1660 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1661 goto nla_put_failure; 1662 1663 if (rdev->wiphy.max_ap_assoc_sta && 1664 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1665 rdev->wiphy.max_ap_assoc_sta)) 1666 goto nla_put_failure; 1667 1668 state->split_start++; 1669 break; 1670 case 11: 1671 if (rdev->wiphy.n_vendor_commands) { 1672 const struct nl80211_vendor_cmd_info *info; 1673 struct nlattr *nested; 1674 1675 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1676 if (!nested) 1677 goto nla_put_failure; 1678 1679 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1680 info = &rdev->wiphy.vendor_commands[i].info; 1681 if (nla_put(msg, i + 1, sizeof(*info), info)) 1682 goto nla_put_failure; 1683 } 1684 nla_nest_end(msg, nested); 1685 } 1686 1687 if (rdev->wiphy.n_vendor_events) { 1688 const struct nl80211_vendor_cmd_info *info; 1689 struct nlattr *nested; 1690 1691 nested = nla_nest_start(msg, 1692 NL80211_ATTR_VENDOR_EVENTS); 1693 if (!nested) 1694 goto nla_put_failure; 1695 1696 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1697 info = &rdev->wiphy.vendor_events[i]; 1698 if (nla_put(msg, i + 1, sizeof(*info), info)) 1699 goto nla_put_failure; 1700 } 1701 nla_nest_end(msg, nested); 1702 } 1703 state->split_start++; 1704 break; 1705 case 12: 1706 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1707 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1708 rdev->wiphy.max_num_csa_counters)) 1709 goto nla_put_failure; 1710 1711 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1712 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1713 goto nla_put_failure; 1714 1715 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1716 sizeof(rdev->wiphy.ext_features), 1717 rdev->wiphy.ext_features)) 1718 goto nla_put_failure; 1719 1720 /* done */ 1721 state->split_start = 0; 1722 break; 1723 } 1724 finish: 1725 genlmsg_end(msg, hdr); 1726 return 0; 1727 1728 nla_put_failure: 1729 genlmsg_cancel(msg, hdr); 1730 return -EMSGSIZE; 1731 } 1732 1733 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1734 struct netlink_callback *cb, 1735 struct nl80211_dump_wiphy_state *state) 1736 { 1737 struct nlattr **tb = nl80211_fam.attrbuf; 1738 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1739 tb, nl80211_fam.maxattr, nl80211_policy); 1740 /* ignore parse errors for backward compatibility */ 1741 if (ret) 1742 return 0; 1743 1744 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1745 if (tb[NL80211_ATTR_WIPHY]) 1746 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1747 if (tb[NL80211_ATTR_WDEV]) 1748 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1749 if (tb[NL80211_ATTR_IFINDEX]) { 1750 struct net_device *netdev; 1751 struct cfg80211_registered_device *rdev; 1752 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1753 1754 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1755 if (!netdev) 1756 return -ENODEV; 1757 if (netdev->ieee80211_ptr) { 1758 rdev = wiphy_to_rdev( 1759 netdev->ieee80211_ptr->wiphy); 1760 state->filter_wiphy = rdev->wiphy_idx; 1761 } 1762 } 1763 1764 return 0; 1765 } 1766 1767 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1768 { 1769 int idx = 0, ret; 1770 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1771 struct cfg80211_registered_device *rdev; 1772 1773 rtnl_lock(); 1774 if (!state) { 1775 state = kzalloc(sizeof(*state), GFP_KERNEL); 1776 if (!state) { 1777 rtnl_unlock(); 1778 return -ENOMEM; 1779 } 1780 state->filter_wiphy = -1; 1781 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1782 if (ret) { 1783 kfree(state); 1784 rtnl_unlock(); 1785 return ret; 1786 } 1787 cb->args[0] = (long)state; 1788 } 1789 1790 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1791 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1792 continue; 1793 if (++idx <= state->start) 1794 continue; 1795 if (state->filter_wiphy != -1 && 1796 state->filter_wiphy != rdev->wiphy_idx) 1797 continue; 1798 /* attempt to fit multiple wiphy data chunks into the skb */ 1799 do { 1800 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1801 skb, 1802 NETLINK_CB(cb->skb).portid, 1803 cb->nlh->nlmsg_seq, 1804 NLM_F_MULTI, state); 1805 if (ret < 0) { 1806 /* 1807 * If sending the wiphy data didn't fit (ENOBUFS 1808 * or EMSGSIZE returned), this SKB is still 1809 * empty (so it's not too big because another 1810 * wiphy dataset is already in the skb) and 1811 * we've not tried to adjust the dump allocation 1812 * yet ... then adjust the alloc size to be 1813 * bigger, and return 1 but with the empty skb. 1814 * This results in an empty message being RX'ed 1815 * in userspace, but that is ignored. 1816 * 1817 * We can then retry with the larger buffer. 1818 */ 1819 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1820 !skb->len && !state->split && 1821 cb->min_dump_alloc < 4096) { 1822 cb->min_dump_alloc = 4096; 1823 state->split_start = 0; 1824 rtnl_unlock(); 1825 return 1; 1826 } 1827 idx--; 1828 break; 1829 } 1830 } while (state->split_start > 0); 1831 break; 1832 } 1833 rtnl_unlock(); 1834 1835 state->start = idx; 1836 1837 return skb->len; 1838 } 1839 1840 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1841 { 1842 kfree((void *)cb->args[0]); 1843 return 0; 1844 } 1845 1846 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1847 { 1848 struct sk_buff *msg; 1849 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1850 struct nl80211_dump_wiphy_state state = {}; 1851 1852 msg = nlmsg_new(4096, GFP_KERNEL); 1853 if (!msg) 1854 return -ENOMEM; 1855 1856 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1857 info->snd_portid, info->snd_seq, 0, 1858 &state) < 0) { 1859 nlmsg_free(msg); 1860 return -ENOBUFS; 1861 } 1862 1863 return genlmsg_reply(msg, info); 1864 } 1865 1866 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1867 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1868 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1869 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1870 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1871 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1872 }; 1873 1874 static int parse_txq_params(struct nlattr *tb[], 1875 struct ieee80211_txq_params *txq_params) 1876 { 1877 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1878 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1879 !tb[NL80211_TXQ_ATTR_AIFS]) 1880 return -EINVAL; 1881 1882 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1883 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1884 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1885 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1886 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1887 1888 if (txq_params->ac >= NL80211_NUM_ACS) 1889 return -EINVAL; 1890 1891 return 0; 1892 } 1893 1894 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1895 { 1896 /* 1897 * You can only set the channel explicitly for WDS interfaces, 1898 * all others have their channel managed via their respective 1899 * "establish a connection" command (connect, join, ...) 1900 * 1901 * For AP/GO and mesh mode, the channel can be set with the 1902 * channel userspace API, but is only stored and passed to the 1903 * low-level driver when the AP starts or the mesh is joined. 1904 * This is for backward compatibility, userspace can also give 1905 * the channel in the start-ap or join-mesh commands instead. 1906 * 1907 * Monitors are special as they are normally slaved to 1908 * whatever else is going on, so they have their own special 1909 * operation to set the monitor channel if possible. 1910 */ 1911 return !wdev || 1912 wdev->iftype == NL80211_IFTYPE_AP || 1913 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1914 wdev->iftype == NL80211_IFTYPE_MONITOR || 1915 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1916 } 1917 1918 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1919 struct genl_info *info, 1920 struct cfg80211_chan_def *chandef) 1921 { 1922 u32 control_freq; 1923 1924 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1925 return -EINVAL; 1926 1927 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1928 1929 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1930 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1931 chandef->center_freq1 = control_freq; 1932 chandef->center_freq2 = 0; 1933 1934 /* Primary channel not allowed */ 1935 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1936 return -EINVAL; 1937 1938 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1939 enum nl80211_channel_type chantype; 1940 1941 chantype = nla_get_u32( 1942 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1943 1944 switch (chantype) { 1945 case NL80211_CHAN_NO_HT: 1946 case NL80211_CHAN_HT20: 1947 case NL80211_CHAN_HT40PLUS: 1948 case NL80211_CHAN_HT40MINUS: 1949 cfg80211_chandef_create(chandef, chandef->chan, 1950 chantype); 1951 break; 1952 default: 1953 return -EINVAL; 1954 } 1955 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1956 chandef->width = 1957 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1958 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1959 chandef->center_freq1 = 1960 nla_get_u32( 1961 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1962 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1963 chandef->center_freq2 = 1964 nla_get_u32( 1965 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1966 } 1967 1968 if (!cfg80211_chandef_valid(chandef)) 1969 return -EINVAL; 1970 1971 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1972 IEEE80211_CHAN_DISABLED)) 1973 return -EINVAL; 1974 1975 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1976 chandef->width == NL80211_CHAN_WIDTH_10) && 1977 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1978 return -EINVAL; 1979 1980 return 0; 1981 } 1982 1983 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1984 struct net_device *dev, 1985 struct genl_info *info) 1986 { 1987 struct cfg80211_chan_def chandef; 1988 int result; 1989 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1990 struct wireless_dev *wdev = NULL; 1991 1992 if (dev) 1993 wdev = dev->ieee80211_ptr; 1994 if (!nl80211_can_set_dev_channel(wdev)) 1995 return -EOPNOTSUPP; 1996 if (wdev) 1997 iftype = wdev->iftype; 1998 1999 result = nl80211_parse_chandef(rdev, info, &chandef); 2000 if (result) 2001 return result; 2002 2003 switch (iftype) { 2004 case NL80211_IFTYPE_AP: 2005 case NL80211_IFTYPE_P2P_GO: 2006 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) { 2007 result = -EINVAL; 2008 break; 2009 } 2010 if (wdev->beacon_interval) { 2011 if (!dev || !rdev->ops->set_ap_chanwidth || 2012 !(rdev->wiphy.features & 2013 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2014 result = -EBUSY; 2015 break; 2016 } 2017 2018 /* Only allow dynamic channel width changes */ 2019 if (chandef.chan != wdev->preset_chandef.chan) { 2020 result = -EBUSY; 2021 break; 2022 } 2023 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2024 if (result) 2025 break; 2026 } 2027 wdev->preset_chandef = chandef; 2028 result = 0; 2029 break; 2030 case NL80211_IFTYPE_MESH_POINT: 2031 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2032 break; 2033 case NL80211_IFTYPE_MONITOR: 2034 result = cfg80211_set_monitor_channel(rdev, &chandef); 2035 break; 2036 default: 2037 result = -EINVAL; 2038 } 2039 2040 return result; 2041 } 2042 2043 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2044 { 2045 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2046 struct net_device *netdev = info->user_ptr[1]; 2047 2048 return __nl80211_set_channel(rdev, netdev, info); 2049 } 2050 2051 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2052 { 2053 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2054 struct net_device *dev = info->user_ptr[1]; 2055 struct wireless_dev *wdev = dev->ieee80211_ptr; 2056 const u8 *bssid; 2057 2058 if (!info->attrs[NL80211_ATTR_MAC]) 2059 return -EINVAL; 2060 2061 if (netif_running(dev)) 2062 return -EBUSY; 2063 2064 if (!rdev->ops->set_wds_peer) 2065 return -EOPNOTSUPP; 2066 2067 if (wdev->iftype != NL80211_IFTYPE_WDS) 2068 return -EOPNOTSUPP; 2069 2070 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2071 return rdev_set_wds_peer(rdev, dev, bssid); 2072 } 2073 2074 2075 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2076 { 2077 struct cfg80211_registered_device *rdev; 2078 struct net_device *netdev = NULL; 2079 struct wireless_dev *wdev; 2080 int result = 0, rem_txq_params = 0; 2081 struct nlattr *nl_txq_params; 2082 u32 changed; 2083 u8 retry_short = 0, retry_long = 0; 2084 u32 frag_threshold = 0, rts_threshold = 0; 2085 u8 coverage_class = 0; 2086 2087 ASSERT_RTNL(); 2088 2089 /* 2090 * Try to find the wiphy and netdev. Normally this 2091 * function shouldn't need the netdev, but this is 2092 * done for backward compatibility -- previously 2093 * setting the channel was done per wiphy, but now 2094 * it is per netdev. Previous userland like hostapd 2095 * also passed a netdev to set_wiphy, so that it is 2096 * possible to let that go to the right netdev! 2097 */ 2098 2099 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2100 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2101 2102 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2103 if (netdev && netdev->ieee80211_ptr) 2104 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2105 else 2106 netdev = NULL; 2107 } 2108 2109 if (!netdev) { 2110 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2111 info->attrs); 2112 if (IS_ERR(rdev)) 2113 return PTR_ERR(rdev); 2114 wdev = NULL; 2115 netdev = NULL; 2116 result = 0; 2117 } else 2118 wdev = netdev->ieee80211_ptr; 2119 2120 /* 2121 * end workaround code, by now the rdev is available 2122 * and locked, and wdev may or may not be NULL. 2123 */ 2124 2125 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2126 result = cfg80211_dev_rename( 2127 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2128 2129 if (result) 2130 return result; 2131 2132 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2133 struct ieee80211_txq_params txq_params; 2134 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2135 2136 if (!rdev->ops->set_txq_params) 2137 return -EOPNOTSUPP; 2138 2139 if (!netdev) 2140 return -EINVAL; 2141 2142 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2143 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2144 return -EINVAL; 2145 2146 if (!netif_running(netdev)) 2147 return -ENETDOWN; 2148 2149 nla_for_each_nested(nl_txq_params, 2150 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2151 rem_txq_params) { 2152 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2153 nla_data(nl_txq_params), 2154 nla_len(nl_txq_params), 2155 txq_params_policy); 2156 if (result) 2157 return result; 2158 result = parse_txq_params(tb, &txq_params); 2159 if (result) 2160 return result; 2161 2162 result = rdev_set_txq_params(rdev, netdev, 2163 &txq_params); 2164 if (result) 2165 return result; 2166 } 2167 } 2168 2169 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2170 result = __nl80211_set_channel( 2171 rdev, 2172 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2173 info); 2174 if (result) 2175 return result; 2176 } 2177 2178 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2179 struct wireless_dev *txp_wdev = wdev; 2180 enum nl80211_tx_power_setting type; 2181 int idx, mbm = 0; 2182 2183 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2184 txp_wdev = NULL; 2185 2186 if (!rdev->ops->set_tx_power) 2187 return -EOPNOTSUPP; 2188 2189 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2190 type = nla_get_u32(info->attrs[idx]); 2191 2192 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2193 (type != NL80211_TX_POWER_AUTOMATIC)) 2194 return -EINVAL; 2195 2196 if (type != NL80211_TX_POWER_AUTOMATIC) { 2197 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2198 mbm = nla_get_u32(info->attrs[idx]); 2199 } 2200 2201 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2202 if (result) 2203 return result; 2204 } 2205 2206 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2207 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2208 u32 tx_ant, rx_ant; 2209 if ((!rdev->wiphy.available_antennas_tx && 2210 !rdev->wiphy.available_antennas_rx) || 2211 !rdev->ops->set_antenna) 2212 return -EOPNOTSUPP; 2213 2214 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2215 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2216 2217 /* reject antenna configurations which don't match the 2218 * available antenna masks, except for the "all" mask */ 2219 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2220 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2221 return -EINVAL; 2222 2223 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2224 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2225 2226 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2227 if (result) 2228 return result; 2229 } 2230 2231 changed = 0; 2232 2233 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2234 retry_short = nla_get_u8( 2235 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2236 if (retry_short == 0) 2237 return -EINVAL; 2238 2239 changed |= WIPHY_PARAM_RETRY_SHORT; 2240 } 2241 2242 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2243 retry_long = nla_get_u8( 2244 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2245 if (retry_long == 0) 2246 return -EINVAL; 2247 2248 changed |= WIPHY_PARAM_RETRY_LONG; 2249 } 2250 2251 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2252 frag_threshold = nla_get_u32( 2253 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2254 if (frag_threshold < 256) 2255 return -EINVAL; 2256 2257 if (frag_threshold != (u32) -1) { 2258 /* 2259 * Fragments (apart from the last one) are required to 2260 * have even length. Make the fragmentation code 2261 * simpler by stripping LSB should someone try to use 2262 * odd threshold value. 2263 */ 2264 frag_threshold &= ~0x1; 2265 } 2266 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2267 } 2268 2269 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2270 rts_threshold = nla_get_u32( 2271 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2272 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2273 } 2274 2275 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2276 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2277 return -EINVAL; 2278 2279 coverage_class = nla_get_u8( 2280 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2281 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2282 } 2283 2284 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2285 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2286 return -EOPNOTSUPP; 2287 2288 changed |= WIPHY_PARAM_DYN_ACK; 2289 } 2290 2291 if (changed) { 2292 u8 old_retry_short, old_retry_long; 2293 u32 old_frag_threshold, old_rts_threshold; 2294 u8 old_coverage_class; 2295 2296 if (!rdev->ops->set_wiphy_params) 2297 return -EOPNOTSUPP; 2298 2299 old_retry_short = rdev->wiphy.retry_short; 2300 old_retry_long = rdev->wiphy.retry_long; 2301 old_frag_threshold = rdev->wiphy.frag_threshold; 2302 old_rts_threshold = rdev->wiphy.rts_threshold; 2303 old_coverage_class = rdev->wiphy.coverage_class; 2304 2305 if (changed & WIPHY_PARAM_RETRY_SHORT) 2306 rdev->wiphy.retry_short = retry_short; 2307 if (changed & WIPHY_PARAM_RETRY_LONG) 2308 rdev->wiphy.retry_long = retry_long; 2309 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2310 rdev->wiphy.frag_threshold = frag_threshold; 2311 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2312 rdev->wiphy.rts_threshold = rts_threshold; 2313 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2314 rdev->wiphy.coverage_class = coverage_class; 2315 2316 result = rdev_set_wiphy_params(rdev, changed); 2317 if (result) { 2318 rdev->wiphy.retry_short = old_retry_short; 2319 rdev->wiphy.retry_long = old_retry_long; 2320 rdev->wiphy.frag_threshold = old_frag_threshold; 2321 rdev->wiphy.rts_threshold = old_rts_threshold; 2322 rdev->wiphy.coverage_class = old_coverage_class; 2323 } 2324 } 2325 return 0; 2326 } 2327 2328 static inline u64 wdev_id(struct wireless_dev *wdev) 2329 { 2330 return (u64)wdev->identifier | 2331 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2332 } 2333 2334 static int nl80211_send_chandef(struct sk_buff *msg, 2335 const struct cfg80211_chan_def *chandef) 2336 { 2337 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2338 return -EINVAL; 2339 2340 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2341 chandef->chan->center_freq)) 2342 return -ENOBUFS; 2343 switch (chandef->width) { 2344 case NL80211_CHAN_WIDTH_20_NOHT: 2345 case NL80211_CHAN_WIDTH_20: 2346 case NL80211_CHAN_WIDTH_40: 2347 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2348 cfg80211_get_chandef_type(chandef))) 2349 return -ENOBUFS; 2350 break; 2351 default: 2352 break; 2353 } 2354 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2355 return -ENOBUFS; 2356 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2357 return -ENOBUFS; 2358 if (chandef->center_freq2 && 2359 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2360 return -ENOBUFS; 2361 return 0; 2362 } 2363 2364 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2365 struct cfg80211_registered_device *rdev, 2366 struct wireless_dev *wdev, bool removal) 2367 { 2368 struct net_device *dev = wdev->netdev; 2369 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2370 void *hdr; 2371 2372 if (removal) 2373 cmd = NL80211_CMD_DEL_INTERFACE; 2374 2375 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2376 if (!hdr) 2377 return -1; 2378 2379 if (dev && 2380 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2381 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2382 goto nla_put_failure; 2383 2384 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2385 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2386 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2387 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2388 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2389 rdev->devlist_generation ^ 2390 (cfg80211_rdev_list_generation << 2))) 2391 goto nla_put_failure; 2392 2393 if (rdev->ops->get_channel) { 2394 int ret; 2395 struct cfg80211_chan_def chandef; 2396 2397 ret = rdev_get_channel(rdev, wdev, &chandef); 2398 if (ret == 0) { 2399 if (nl80211_send_chandef(msg, &chandef)) 2400 goto nla_put_failure; 2401 } 2402 } 2403 2404 if (wdev->ssid_len) { 2405 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2406 goto nla_put_failure; 2407 } 2408 2409 genlmsg_end(msg, hdr); 2410 return 0; 2411 2412 nla_put_failure: 2413 genlmsg_cancel(msg, hdr); 2414 return -EMSGSIZE; 2415 } 2416 2417 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2418 { 2419 int wp_idx = 0; 2420 int if_idx = 0; 2421 int wp_start = cb->args[0]; 2422 int if_start = cb->args[1]; 2423 struct cfg80211_registered_device *rdev; 2424 struct wireless_dev *wdev; 2425 2426 rtnl_lock(); 2427 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2428 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2429 continue; 2430 if (wp_idx < wp_start) { 2431 wp_idx++; 2432 continue; 2433 } 2434 if_idx = 0; 2435 2436 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2437 if (if_idx < if_start) { 2438 if_idx++; 2439 continue; 2440 } 2441 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2442 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2443 rdev, wdev, false) < 0) { 2444 goto out; 2445 } 2446 if_idx++; 2447 } 2448 2449 wp_idx++; 2450 } 2451 out: 2452 rtnl_unlock(); 2453 2454 cb->args[0] = wp_idx; 2455 cb->args[1] = if_idx; 2456 2457 return skb->len; 2458 } 2459 2460 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2461 { 2462 struct sk_buff *msg; 2463 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2464 struct wireless_dev *wdev = info->user_ptr[1]; 2465 2466 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2467 if (!msg) 2468 return -ENOMEM; 2469 2470 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2471 rdev, wdev, false) < 0) { 2472 nlmsg_free(msg); 2473 return -ENOBUFS; 2474 } 2475 2476 return genlmsg_reply(msg, info); 2477 } 2478 2479 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2480 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2481 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2482 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2483 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2484 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2485 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2486 }; 2487 2488 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2489 { 2490 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2491 int flag; 2492 2493 *mntrflags = 0; 2494 2495 if (!nla) 2496 return -EINVAL; 2497 2498 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2499 nla, mntr_flags_policy)) 2500 return -EINVAL; 2501 2502 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2503 if (flags[flag]) 2504 *mntrflags |= (1<<flag); 2505 2506 return 0; 2507 } 2508 2509 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2510 struct net_device *netdev, u8 use_4addr, 2511 enum nl80211_iftype iftype) 2512 { 2513 if (!use_4addr) { 2514 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2515 return -EBUSY; 2516 return 0; 2517 } 2518 2519 switch (iftype) { 2520 case NL80211_IFTYPE_AP_VLAN: 2521 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2522 return 0; 2523 break; 2524 case NL80211_IFTYPE_STATION: 2525 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2526 return 0; 2527 break; 2528 default: 2529 break; 2530 } 2531 2532 return -EOPNOTSUPP; 2533 } 2534 2535 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2536 { 2537 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2538 struct vif_params params; 2539 int err; 2540 enum nl80211_iftype otype, ntype; 2541 struct net_device *dev = info->user_ptr[1]; 2542 u32 _flags, *flags = NULL; 2543 bool change = false; 2544 2545 memset(¶ms, 0, sizeof(params)); 2546 2547 otype = ntype = dev->ieee80211_ptr->iftype; 2548 2549 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2550 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2551 if (otype != ntype) 2552 change = true; 2553 if (ntype > NL80211_IFTYPE_MAX) 2554 return -EINVAL; 2555 } 2556 2557 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2558 struct wireless_dev *wdev = dev->ieee80211_ptr; 2559 2560 if (ntype != NL80211_IFTYPE_MESH_POINT) 2561 return -EINVAL; 2562 if (netif_running(dev)) 2563 return -EBUSY; 2564 2565 wdev_lock(wdev); 2566 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2567 IEEE80211_MAX_MESH_ID_LEN); 2568 wdev->mesh_id_up_len = 2569 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2570 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2571 wdev->mesh_id_up_len); 2572 wdev_unlock(wdev); 2573 } 2574 2575 if (info->attrs[NL80211_ATTR_4ADDR]) { 2576 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2577 change = true; 2578 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2579 if (err) 2580 return err; 2581 } else { 2582 params.use_4addr = -1; 2583 } 2584 2585 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2586 if (ntype != NL80211_IFTYPE_MONITOR) 2587 return -EINVAL; 2588 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2589 &_flags); 2590 if (err) 2591 return err; 2592 2593 flags = &_flags; 2594 change = true; 2595 } 2596 2597 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2598 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2599 return -EOPNOTSUPP; 2600 2601 if (change) 2602 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2603 else 2604 err = 0; 2605 2606 if (!err && params.use_4addr != -1) 2607 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2608 2609 return err; 2610 } 2611 2612 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2613 { 2614 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2615 struct vif_params params; 2616 struct wireless_dev *wdev; 2617 struct sk_buff *msg, *event; 2618 int err; 2619 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2620 u32 flags; 2621 2622 /* to avoid failing a new interface creation due to pending removal */ 2623 cfg80211_destroy_ifaces(rdev); 2624 2625 memset(¶ms, 0, sizeof(params)); 2626 2627 if (!info->attrs[NL80211_ATTR_IFNAME]) 2628 return -EINVAL; 2629 2630 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2631 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2632 if (type > NL80211_IFTYPE_MAX) 2633 return -EINVAL; 2634 } 2635 2636 if (!rdev->ops->add_virtual_intf || 2637 !(rdev->wiphy.interface_modes & (1 << type))) 2638 return -EOPNOTSUPP; 2639 2640 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2641 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2642 info->attrs[NL80211_ATTR_MAC]) { 2643 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2644 ETH_ALEN); 2645 if (!is_valid_ether_addr(params.macaddr)) 2646 return -EADDRNOTAVAIL; 2647 } 2648 2649 if (info->attrs[NL80211_ATTR_4ADDR]) { 2650 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2651 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2652 if (err) 2653 return err; 2654 } 2655 2656 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2657 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2658 &flags); 2659 2660 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2661 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2662 return -EOPNOTSUPP; 2663 2664 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2665 if (!msg) 2666 return -ENOMEM; 2667 2668 wdev = rdev_add_virtual_intf(rdev, 2669 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2670 NET_NAME_USER, type, err ? NULL : &flags, 2671 ¶ms); 2672 if (WARN_ON(!wdev)) { 2673 nlmsg_free(msg); 2674 return -EPROTO; 2675 } else if (IS_ERR(wdev)) { 2676 nlmsg_free(msg); 2677 return PTR_ERR(wdev); 2678 } 2679 2680 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2681 wdev->owner_nlportid = info->snd_portid; 2682 2683 switch (type) { 2684 case NL80211_IFTYPE_MESH_POINT: 2685 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2686 break; 2687 wdev_lock(wdev); 2688 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2689 IEEE80211_MAX_MESH_ID_LEN); 2690 wdev->mesh_id_up_len = 2691 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2692 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2693 wdev->mesh_id_up_len); 2694 wdev_unlock(wdev); 2695 break; 2696 case NL80211_IFTYPE_P2P_DEVICE: 2697 /* 2698 * P2P Device doesn't have a netdev, so doesn't go 2699 * through the netdev notifier and must be added here 2700 */ 2701 mutex_init(&wdev->mtx); 2702 INIT_LIST_HEAD(&wdev->event_list); 2703 spin_lock_init(&wdev->event_lock); 2704 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2705 spin_lock_init(&wdev->mgmt_registrations_lock); 2706 2707 wdev->identifier = ++rdev->wdev_id; 2708 list_add_rcu(&wdev->list, &rdev->wdev_list); 2709 rdev->devlist_generation++; 2710 break; 2711 default: 2712 break; 2713 } 2714 2715 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2716 rdev, wdev, false) < 0) { 2717 nlmsg_free(msg); 2718 return -ENOBUFS; 2719 } 2720 2721 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2722 if (event) { 2723 if (nl80211_send_iface(event, 0, 0, 0, 2724 rdev, wdev, false) < 0) { 2725 nlmsg_free(event); 2726 goto out; 2727 } 2728 2729 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2730 event, 0, NL80211_MCGRP_CONFIG, 2731 GFP_KERNEL); 2732 } 2733 2734 out: 2735 return genlmsg_reply(msg, info); 2736 } 2737 2738 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2739 { 2740 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2741 struct wireless_dev *wdev = info->user_ptr[1]; 2742 struct sk_buff *msg; 2743 int status; 2744 2745 if (!rdev->ops->del_virtual_intf) 2746 return -EOPNOTSUPP; 2747 2748 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2749 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2750 nlmsg_free(msg); 2751 msg = NULL; 2752 } 2753 2754 /* 2755 * If we remove a wireless device without a netdev then clear 2756 * user_ptr[1] so that nl80211_post_doit won't dereference it 2757 * to check if it needs to do dev_put(). Otherwise it crashes 2758 * since the wdev has been freed, unlike with a netdev where 2759 * we need the dev_put() for the netdev to really be freed. 2760 */ 2761 if (!wdev->netdev) 2762 info->user_ptr[1] = NULL; 2763 2764 status = rdev_del_virtual_intf(rdev, wdev); 2765 if (status >= 0 && msg) 2766 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2767 msg, 0, NL80211_MCGRP_CONFIG, 2768 GFP_KERNEL); 2769 else 2770 nlmsg_free(msg); 2771 2772 return status; 2773 } 2774 2775 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2776 { 2777 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2778 struct net_device *dev = info->user_ptr[1]; 2779 u16 noack_map; 2780 2781 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2782 return -EINVAL; 2783 2784 if (!rdev->ops->set_noack_map) 2785 return -EOPNOTSUPP; 2786 2787 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2788 2789 return rdev_set_noack_map(rdev, dev, noack_map); 2790 } 2791 2792 struct get_key_cookie { 2793 struct sk_buff *msg; 2794 int error; 2795 int idx; 2796 }; 2797 2798 static void get_key_callback(void *c, struct key_params *params) 2799 { 2800 struct nlattr *key; 2801 struct get_key_cookie *cookie = c; 2802 2803 if ((params->key && 2804 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2805 params->key_len, params->key)) || 2806 (params->seq && 2807 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2808 params->seq_len, params->seq)) || 2809 (params->cipher && 2810 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2811 params->cipher))) 2812 goto nla_put_failure; 2813 2814 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2815 if (!key) 2816 goto nla_put_failure; 2817 2818 if ((params->key && 2819 nla_put(cookie->msg, NL80211_KEY_DATA, 2820 params->key_len, params->key)) || 2821 (params->seq && 2822 nla_put(cookie->msg, NL80211_KEY_SEQ, 2823 params->seq_len, params->seq)) || 2824 (params->cipher && 2825 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2826 params->cipher))) 2827 goto nla_put_failure; 2828 2829 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2830 goto nla_put_failure; 2831 2832 nla_nest_end(cookie->msg, key); 2833 2834 return; 2835 nla_put_failure: 2836 cookie->error = 1; 2837 } 2838 2839 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2840 { 2841 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2842 int err; 2843 struct net_device *dev = info->user_ptr[1]; 2844 u8 key_idx = 0; 2845 const u8 *mac_addr = NULL; 2846 bool pairwise; 2847 struct get_key_cookie cookie = { 2848 .error = 0, 2849 }; 2850 void *hdr; 2851 struct sk_buff *msg; 2852 2853 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2854 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2855 2856 if (key_idx > 5) 2857 return -EINVAL; 2858 2859 if (info->attrs[NL80211_ATTR_MAC]) 2860 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2861 2862 pairwise = !!mac_addr; 2863 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2864 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2865 if (kt >= NUM_NL80211_KEYTYPES) 2866 return -EINVAL; 2867 if (kt != NL80211_KEYTYPE_GROUP && 2868 kt != NL80211_KEYTYPE_PAIRWISE) 2869 return -EINVAL; 2870 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2871 } 2872 2873 if (!rdev->ops->get_key) 2874 return -EOPNOTSUPP; 2875 2876 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2877 return -ENOENT; 2878 2879 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2880 if (!msg) 2881 return -ENOMEM; 2882 2883 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2884 NL80211_CMD_NEW_KEY); 2885 if (!hdr) 2886 goto nla_put_failure; 2887 2888 cookie.msg = msg; 2889 cookie.idx = key_idx; 2890 2891 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2892 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2893 goto nla_put_failure; 2894 if (mac_addr && 2895 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2896 goto nla_put_failure; 2897 2898 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2899 get_key_callback); 2900 2901 if (err) 2902 goto free_msg; 2903 2904 if (cookie.error) 2905 goto nla_put_failure; 2906 2907 genlmsg_end(msg, hdr); 2908 return genlmsg_reply(msg, info); 2909 2910 nla_put_failure: 2911 err = -ENOBUFS; 2912 free_msg: 2913 nlmsg_free(msg); 2914 return err; 2915 } 2916 2917 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2918 { 2919 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2920 struct key_parse key; 2921 int err; 2922 struct net_device *dev = info->user_ptr[1]; 2923 2924 err = nl80211_parse_key(info, &key); 2925 if (err) 2926 return err; 2927 2928 if (key.idx < 0) 2929 return -EINVAL; 2930 2931 /* only support setting default key */ 2932 if (!key.def && !key.defmgmt) 2933 return -EINVAL; 2934 2935 wdev_lock(dev->ieee80211_ptr); 2936 2937 if (key.def) { 2938 if (!rdev->ops->set_default_key) { 2939 err = -EOPNOTSUPP; 2940 goto out; 2941 } 2942 2943 err = nl80211_key_allowed(dev->ieee80211_ptr); 2944 if (err) 2945 goto out; 2946 2947 err = rdev_set_default_key(rdev, dev, key.idx, 2948 key.def_uni, key.def_multi); 2949 2950 if (err) 2951 goto out; 2952 2953 #ifdef CONFIG_CFG80211_WEXT 2954 dev->ieee80211_ptr->wext.default_key = key.idx; 2955 #endif 2956 } else { 2957 if (key.def_uni || !key.def_multi) { 2958 err = -EINVAL; 2959 goto out; 2960 } 2961 2962 if (!rdev->ops->set_default_mgmt_key) { 2963 err = -EOPNOTSUPP; 2964 goto out; 2965 } 2966 2967 err = nl80211_key_allowed(dev->ieee80211_ptr); 2968 if (err) 2969 goto out; 2970 2971 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2972 if (err) 2973 goto out; 2974 2975 #ifdef CONFIG_CFG80211_WEXT 2976 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2977 #endif 2978 } 2979 2980 out: 2981 wdev_unlock(dev->ieee80211_ptr); 2982 2983 return err; 2984 } 2985 2986 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2987 { 2988 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2989 int err; 2990 struct net_device *dev = info->user_ptr[1]; 2991 struct key_parse key; 2992 const u8 *mac_addr = NULL; 2993 2994 err = nl80211_parse_key(info, &key); 2995 if (err) 2996 return err; 2997 2998 if (!key.p.key) 2999 return -EINVAL; 3000 3001 if (info->attrs[NL80211_ATTR_MAC]) 3002 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3003 3004 if (key.type == -1) { 3005 if (mac_addr) 3006 key.type = NL80211_KEYTYPE_PAIRWISE; 3007 else 3008 key.type = NL80211_KEYTYPE_GROUP; 3009 } 3010 3011 /* for now */ 3012 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3013 key.type != NL80211_KEYTYPE_GROUP) 3014 return -EINVAL; 3015 3016 if (!rdev->ops->add_key) 3017 return -EOPNOTSUPP; 3018 3019 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3020 key.type == NL80211_KEYTYPE_PAIRWISE, 3021 mac_addr)) 3022 return -EINVAL; 3023 3024 wdev_lock(dev->ieee80211_ptr); 3025 err = nl80211_key_allowed(dev->ieee80211_ptr); 3026 if (!err) 3027 err = rdev_add_key(rdev, dev, key.idx, 3028 key.type == NL80211_KEYTYPE_PAIRWISE, 3029 mac_addr, &key.p); 3030 wdev_unlock(dev->ieee80211_ptr); 3031 3032 return err; 3033 } 3034 3035 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3036 { 3037 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3038 int err; 3039 struct net_device *dev = info->user_ptr[1]; 3040 u8 *mac_addr = NULL; 3041 struct key_parse key; 3042 3043 err = nl80211_parse_key(info, &key); 3044 if (err) 3045 return err; 3046 3047 if (info->attrs[NL80211_ATTR_MAC]) 3048 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3049 3050 if (key.type == -1) { 3051 if (mac_addr) 3052 key.type = NL80211_KEYTYPE_PAIRWISE; 3053 else 3054 key.type = NL80211_KEYTYPE_GROUP; 3055 } 3056 3057 /* for now */ 3058 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3059 key.type != NL80211_KEYTYPE_GROUP) 3060 return -EINVAL; 3061 3062 if (!rdev->ops->del_key) 3063 return -EOPNOTSUPP; 3064 3065 wdev_lock(dev->ieee80211_ptr); 3066 err = nl80211_key_allowed(dev->ieee80211_ptr); 3067 3068 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3069 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3070 err = -ENOENT; 3071 3072 if (!err) 3073 err = rdev_del_key(rdev, dev, key.idx, 3074 key.type == NL80211_KEYTYPE_PAIRWISE, 3075 mac_addr); 3076 3077 #ifdef CONFIG_CFG80211_WEXT 3078 if (!err) { 3079 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3080 dev->ieee80211_ptr->wext.default_key = -1; 3081 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3082 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3083 } 3084 #endif 3085 wdev_unlock(dev->ieee80211_ptr); 3086 3087 return err; 3088 } 3089 3090 /* This function returns an error or the number of nested attributes */ 3091 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3092 { 3093 struct nlattr *attr; 3094 int n_entries = 0, tmp; 3095 3096 nla_for_each_nested(attr, nl_attr, tmp) { 3097 if (nla_len(attr) != ETH_ALEN) 3098 return -EINVAL; 3099 3100 n_entries++; 3101 } 3102 3103 return n_entries; 3104 } 3105 3106 /* 3107 * This function parses ACL information and allocates memory for ACL data. 3108 * On successful return, the calling function is responsible to free the 3109 * ACL buffer returned by this function. 3110 */ 3111 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3112 struct genl_info *info) 3113 { 3114 enum nl80211_acl_policy acl_policy; 3115 struct nlattr *attr; 3116 struct cfg80211_acl_data *acl; 3117 int i = 0, n_entries, tmp; 3118 3119 if (!wiphy->max_acl_mac_addrs) 3120 return ERR_PTR(-EOPNOTSUPP); 3121 3122 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3123 return ERR_PTR(-EINVAL); 3124 3125 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3126 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3127 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3128 return ERR_PTR(-EINVAL); 3129 3130 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3131 return ERR_PTR(-EINVAL); 3132 3133 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3134 if (n_entries < 0) 3135 return ERR_PTR(n_entries); 3136 3137 if (n_entries > wiphy->max_acl_mac_addrs) 3138 return ERR_PTR(-ENOTSUPP); 3139 3140 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3141 GFP_KERNEL); 3142 if (!acl) 3143 return ERR_PTR(-ENOMEM); 3144 3145 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3146 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3147 i++; 3148 } 3149 3150 acl->n_acl_entries = n_entries; 3151 acl->acl_policy = acl_policy; 3152 3153 return acl; 3154 } 3155 3156 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3157 { 3158 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3159 struct net_device *dev = info->user_ptr[1]; 3160 struct cfg80211_acl_data *acl; 3161 int err; 3162 3163 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3164 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3165 return -EOPNOTSUPP; 3166 3167 if (!dev->ieee80211_ptr->beacon_interval) 3168 return -EINVAL; 3169 3170 acl = parse_acl_data(&rdev->wiphy, info); 3171 if (IS_ERR(acl)) 3172 return PTR_ERR(acl); 3173 3174 err = rdev_set_mac_acl(rdev, dev, acl); 3175 3176 kfree(acl); 3177 3178 return err; 3179 } 3180 3181 static int nl80211_parse_beacon(struct nlattr *attrs[], 3182 struct cfg80211_beacon_data *bcn) 3183 { 3184 bool haveinfo = false; 3185 3186 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3187 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3188 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3189 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3190 return -EINVAL; 3191 3192 memset(bcn, 0, sizeof(*bcn)); 3193 3194 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3195 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3196 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3197 if (!bcn->head_len) 3198 return -EINVAL; 3199 haveinfo = true; 3200 } 3201 3202 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3203 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3204 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3205 haveinfo = true; 3206 } 3207 3208 if (!haveinfo) 3209 return -EINVAL; 3210 3211 if (attrs[NL80211_ATTR_IE]) { 3212 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3213 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3214 } 3215 3216 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3217 bcn->proberesp_ies = 3218 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3219 bcn->proberesp_ies_len = 3220 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3221 } 3222 3223 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3224 bcn->assocresp_ies = 3225 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3226 bcn->assocresp_ies_len = 3227 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3228 } 3229 3230 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3231 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3232 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3233 } 3234 3235 return 0; 3236 } 3237 3238 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3239 struct cfg80211_ap_settings *params) 3240 { 3241 struct wireless_dev *wdev; 3242 bool ret = false; 3243 3244 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3245 if (wdev->iftype != NL80211_IFTYPE_AP && 3246 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3247 continue; 3248 3249 if (!wdev->preset_chandef.chan) 3250 continue; 3251 3252 params->chandef = wdev->preset_chandef; 3253 ret = true; 3254 break; 3255 } 3256 3257 return ret; 3258 } 3259 3260 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3261 enum nl80211_auth_type auth_type, 3262 enum nl80211_commands cmd) 3263 { 3264 if (auth_type > NL80211_AUTHTYPE_MAX) 3265 return false; 3266 3267 switch (cmd) { 3268 case NL80211_CMD_AUTHENTICATE: 3269 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3270 auth_type == NL80211_AUTHTYPE_SAE) 3271 return false; 3272 return true; 3273 case NL80211_CMD_CONNECT: 3274 case NL80211_CMD_START_AP: 3275 /* SAE not supported yet */ 3276 if (auth_type == NL80211_AUTHTYPE_SAE) 3277 return false; 3278 return true; 3279 default: 3280 return false; 3281 } 3282 } 3283 3284 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3285 { 3286 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3287 struct net_device *dev = info->user_ptr[1]; 3288 struct wireless_dev *wdev = dev->ieee80211_ptr; 3289 struct cfg80211_ap_settings params; 3290 int err; 3291 3292 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3293 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3294 return -EOPNOTSUPP; 3295 3296 if (!rdev->ops->start_ap) 3297 return -EOPNOTSUPP; 3298 3299 if (wdev->beacon_interval) 3300 return -EALREADY; 3301 3302 memset(¶ms, 0, sizeof(params)); 3303 3304 /* these are required for START_AP */ 3305 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3306 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3307 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3308 return -EINVAL; 3309 3310 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3311 if (err) 3312 return err; 3313 3314 params.beacon_interval = 3315 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3316 params.dtim_period = 3317 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3318 3319 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3320 if (err) 3321 return err; 3322 3323 /* 3324 * In theory, some of these attributes should be required here 3325 * but since they were not used when the command was originally 3326 * added, keep them optional for old user space programs to let 3327 * them continue to work with drivers that do not need the 3328 * additional information -- drivers must check! 3329 */ 3330 if (info->attrs[NL80211_ATTR_SSID]) { 3331 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3332 params.ssid_len = 3333 nla_len(info->attrs[NL80211_ATTR_SSID]); 3334 if (params.ssid_len == 0 || 3335 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3336 return -EINVAL; 3337 } 3338 3339 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3340 params.hidden_ssid = nla_get_u32( 3341 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3342 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3343 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3344 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3345 return -EINVAL; 3346 } 3347 3348 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3349 3350 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3351 params.auth_type = nla_get_u32( 3352 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3353 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3354 NL80211_CMD_START_AP)) 3355 return -EINVAL; 3356 } else 3357 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3358 3359 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3360 NL80211_MAX_NR_CIPHER_SUITES); 3361 if (err) 3362 return err; 3363 3364 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3365 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3366 return -EOPNOTSUPP; 3367 params.inactivity_timeout = nla_get_u16( 3368 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3369 } 3370 3371 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3372 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3373 return -EINVAL; 3374 params.p2p_ctwindow = 3375 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3376 if (params.p2p_ctwindow > 127) 3377 return -EINVAL; 3378 if (params.p2p_ctwindow != 0 && 3379 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3380 return -EINVAL; 3381 } 3382 3383 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3384 u8 tmp; 3385 3386 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3387 return -EINVAL; 3388 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3389 if (tmp > 1) 3390 return -EINVAL; 3391 params.p2p_opp_ps = tmp; 3392 if (params.p2p_opp_ps != 0 && 3393 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3394 return -EINVAL; 3395 } 3396 3397 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3398 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3399 if (err) 3400 return err; 3401 } else if (wdev->preset_chandef.chan) { 3402 params.chandef = wdev->preset_chandef; 3403 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3404 return -EINVAL; 3405 3406 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 3407 wdev->iftype)) 3408 return -EINVAL; 3409 3410 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3411 params.acl = parse_acl_data(&rdev->wiphy, info); 3412 if (IS_ERR(params.acl)) 3413 return PTR_ERR(params.acl); 3414 } 3415 3416 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3417 params.smps_mode = 3418 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3419 switch (params.smps_mode) { 3420 case NL80211_SMPS_OFF: 3421 break; 3422 case NL80211_SMPS_STATIC: 3423 if (!(rdev->wiphy.features & 3424 NL80211_FEATURE_STATIC_SMPS)) 3425 return -EINVAL; 3426 break; 3427 case NL80211_SMPS_DYNAMIC: 3428 if (!(rdev->wiphy.features & 3429 NL80211_FEATURE_DYNAMIC_SMPS)) 3430 return -EINVAL; 3431 break; 3432 default: 3433 return -EINVAL; 3434 } 3435 } else { 3436 params.smps_mode = NL80211_SMPS_OFF; 3437 } 3438 3439 wdev_lock(wdev); 3440 err = rdev_start_ap(rdev, dev, ¶ms); 3441 if (!err) { 3442 wdev->preset_chandef = params.chandef; 3443 wdev->beacon_interval = params.beacon_interval; 3444 wdev->chandef = params.chandef; 3445 wdev->ssid_len = params.ssid_len; 3446 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3447 } 3448 wdev_unlock(wdev); 3449 3450 kfree(params.acl); 3451 3452 return err; 3453 } 3454 3455 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3456 { 3457 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3458 struct net_device *dev = info->user_ptr[1]; 3459 struct wireless_dev *wdev = dev->ieee80211_ptr; 3460 struct cfg80211_beacon_data params; 3461 int err; 3462 3463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3465 return -EOPNOTSUPP; 3466 3467 if (!rdev->ops->change_beacon) 3468 return -EOPNOTSUPP; 3469 3470 if (!wdev->beacon_interval) 3471 return -EINVAL; 3472 3473 err = nl80211_parse_beacon(info->attrs, ¶ms); 3474 if (err) 3475 return err; 3476 3477 wdev_lock(wdev); 3478 err = rdev_change_beacon(rdev, dev, ¶ms); 3479 wdev_unlock(wdev); 3480 3481 return err; 3482 } 3483 3484 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3485 { 3486 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3487 struct net_device *dev = info->user_ptr[1]; 3488 3489 return cfg80211_stop_ap(rdev, dev, false); 3490 } 3491 3492 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3493 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3494 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3495 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3496 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3497 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3498 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3499 }; 3500 3501 static int parse_station_flags(struct genl_info *info, 3502 enum nl80211_iftype iftype, 3503 struct station_parameters *params) 3504 { 3505 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3506 struct nlattr *nla; 3507 int flag; 3508 3509 /* 3510 * Try parsing the new attribute first so userspace 3511 * can specify both for older kernels. 3512 */ 3513 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3514 if (nla) { 3515 struct nl80211_sta_flag_update *sta_flags; 3516 3517 sta_flags = nla_data(nla); 3518 params->sta_flags_mask = sta_flags->mask; 3519 params->sta_flags_set = sta_flags->set; 3520 params->sta_flags_set &= params->sta_flags_mask; 3521 if ((params->sta_flags_mask | 3522 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3523 return -EINVAL; 3524 return 0; 3525 } 3526 3527 /* if present, parse the old attribute */ 3528 3529 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3530 if (!nla) 3531 return 0; 3532 3533 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3534 nla, sta_flags_policy)) 3535 return -EINVAL; 3536 3537 /* 3538 * Only allow certain flags for interface types so that 3539 * other attributes are silently ignored. Remember that 3540 * this is backward compatibility code with old userspace 3541 * and shouldn't be hit in other cases anyway. 3542 */ 3543 switch (iftype) { 3544 case NL80211_IFTYPE_AP: 3545 case NL80211_IFTYPE_AP_VLAN: 3546 case NL80211_IFTYPE_P2P_GO: 3547 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3548 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3549 BIT(NL80211_STA_FLAG_WME) | 3550 BIT(NL80211_STA_FLAG_MFP); 3551 break; 3552 case NL80211_IFTYPE_P2P_CLIENT: 3553 case NL80211_IFTYPE_STATION: 3554 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3555 BIT(NL80211_STA_FLAG_TDLS_PEER); 3556 break; 3557 case NL80211_IFTYPE_MESH_POINT: 3558 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3559 BIT(NL80211_STA_FLAG_MFP) | 3560 BIT(NL80211_STA_FLAG_AUTHORIZED); 3561 default: 3562 return -EINVAL; 3563 } 3564 3565 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3566 if (flags[flag]) { 3567 params->sta_flags_set |= (1<<flag); 3568 3569 /* no longer support new API additions in old API */ 3570 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3571 return -EINVAL; 3572 } 3573 } 3574 3575 return 0; 3576 } 3577 3578 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3579 int attr) 3580 { 3581 struct nlattr *rate; 3582 u32 bitrate; 3583 u16 bitrate_compat; 3584 enum nl80211_attrs rate_flg; 3585 3586 rate = nla_nest_start(msg, attr); 3587 if (!rate) 3588 return false; 3589 3590 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3591 bitrate = cfg80211_calculate_bitrate(info); 3592 /* report 16-bit bitrate only if we can */ 3593 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3594 if (bitrate > 0 && 3595 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3596 return false; 3597 if (bitrate_compat > 0 && 3598 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3599 return false; 3600 3601 switch (info->bw) { 3602 case RATE_INFO_BW_5: 3603 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 3604 break; 3605 case RATE_INFO_BW_10: 3606 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 3607 break; 3608 default: 3609 WARN_ON(1); 3610 /* fall through */ 3611 case RATE_INFO_BW_20: 3612 rate_flg = 0; 3613 break; 3614 case RATE_INFO_BW_40: 3615 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 3616 break; 3617 case RATE_INFO_BW_80: 3618 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 3619 break; 3620 case RATE_INFO_BW_160: 3621 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 3622 break; 3623 } 3624 3625 if (rate_flg && nla_put_flag(msg, rate_flg)) 3626 return false; 3627 3628 if (info->flags & RATE_INFO_FLAGS_MCS) { 3629 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3630 return false; 3631 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3632 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3633 return false; 3634 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3635 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3636 return false; 3637 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3638 return false; 3639 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3640 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3641 return false; 3642 } 3643 3644 nla_nest_end(msg, rate); 3645 return true; 3646 } 3647 3648 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3649 int id) 3650 { 3651 void *attr; 3652 int i = 0; 3653 3654 if (!mask) 3655 return true; 3656 3657 attr = nla_nest_start(msg, id); 3658 if (!attr) 3659 return false; 3660 3661 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3662 if (!(mask & BIT(i))) 3663 continue; 3664 3665 if (nla_put_u8(msg, i, signal[i])) 3666 return false; 3667 } 3668 3669 nla_nest_end(msg, attr); 3670 3671 return true; 3672 } 3673 3674 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 3675 u32 seq, int flags, 3676 struct cfg80211_registered_device *rdev, 3677 struct net_device *dev, 3678 const u8 *mac_addr, struct station_info *sinfo) 3679 { 3680 void *hdr; 3681 struct nlattr *sinfoattr, *bss_param; 3682 3683 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3684 if (!hdr) 3685 return -1; 3686 3687 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3688 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3689 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3690 goto nla_put_failure; 3691 3692 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3693 if (!sinfoattr) 3694 goto nla_put_failure; 3695 3696 #define PUT_SINFO(attr, memb, type) do { \ 3697 if (sinfo->filled & BIT(NL80211_STA_INFO_ ## attr) && \ 3698 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 3699 sinfo->memb)) \ 3700 goto nla_put_failure; \ 3701 } while (0) 3702 3703 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 3704 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 3705 3706 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 3707 BIT(NL80211_STA_INFO_RX_BYTES64)) && 3708 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3709 (u32)sinfo->rx_bytes)) 3710 goto nla_put_failure; 3711 3712 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 3713 BIT(NL80211_STA_INFO_TX_BYTES64)) && 3714 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3715 (u32)sinfo->tx_bytes)) 3716 goto nla_put_failure; 3717 3718 PUT_SINFO(RX_BYTES64, rx_bytes, u64); 3719 PUT_SINFO(TX_BYTES64, tx_bytes, u64); 3720 PUT_SINFO(LLID, llid, u16); 3721 PUT_SINFO(PLID, plid, u16); 3722 PUT_SINFO(PLINK_STATE, plink_state, u8); 3723 3724 switch (rdev->wiphy.signal_type) { 3725 case CFG80211_SIGNAL_TYPE_MBM: 3726 PUT_SINFO(SIGNAL, signal, u8); 3727 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 3728 break; 3729 default: 3730 break; 3731 } 3732 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 3733 if (!nl80211_put_signal(msg, sinfo->chains, 3734 sinfo->chain_signal, 3735 NL80211_STA_INFO_CHAIN_SIGNAL)) 3736 goto nla_put_failure; 3737 } 3738 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 3739 if (!nl80211_put_signal(msg, sinfo->chains, 3740 sinfo->chain_signal_avg, 3741 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3742 goto nla_put_failure; 3743 } 3744 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 3745 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3746 NL80211_STA_INFO_TX_BITRATE)) 3747 goto nla_put_failure; 3748 } 3749 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 3750 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3751 NL80211_STA_INFO_RX_BITRATE)) 3752 goto nla_put_failure; 3753 } 3754 3755 PUT_SINFO(RX_PACKETS, rx_packets, u32); 3756 PUT_SINFO(TX_PACKETS, tx_packets, u32); 3757 PUT_SINFO(TX_RETRIES, tx_retries, u32); 3758 PUT_SINFO(TX_FAILED, tx_failed, u32); 3759 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 3760 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 3761 PUT_SINFO(LOCAL_PM, local_pm, u32); 3762 PUT_SINFO(PEER_PM, peer_pm, u32); 3763 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 3764 3765 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 3766 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3767 if (!bss_param) 3768 goto nla_put_failure; 3769 3770 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3771 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3772 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3773 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3774 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3775 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3776 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3777 sinfo->bss_param.dtim_period) || 3778 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3779 sinfo->bss_param.beacon_interval)) 3780 goto nla_put_failure; 3781 3782 nla_nest_end(msg, bss_param); 3783 } 3784 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 3785 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3786 sizeof(struct nl80211_sta_flag_update), 3787 &sinfo->sta_flags)) 3788 goto nla_put_failure; 3789 3790 PUT_SINFO(T_OFFSET, t_offset, u64); 3791 PUT_SINFO(RX_DROP_MISC, rx_dropped_misc, u64); 3792 PUT_SINFO(BEACON_RX, rx_beacon, u64); 3793 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 3794 3795 #undef PUT_SINFO 3796 3797 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 3798 struct nlattr *tidsattr; 3799 int tid; 3800 3801 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 3802 if (!tidsattr) 3803 goto nla_put_failure; 3804 3805 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 3806 struct cfg80211_tid_stats *tidstats; 3807 struct nlattr *tidattr; 3808 3809 tidstats = &sinfo->pertid[tid]; 3810 3811 if (!tidstats->filled) 3812 continue; 3813 3814 tidattr = nla_nest_start(msg, tid + 1); 3815 if (!tidattr) 3816 goto nla_put_failure; 3817 3818 #define PUT_TIDVAL(attr, memb, type) do { \ 3819 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 3820 nla_put_ ## type(msg, NL80211_TID_STATS_ ## attr, \ 3821 tidstats->memb)) \ 3822 goto nla_put_failure; \ 3823 } while (0) 3824 3825 PUT_TIDVAL(RX_MSDU, rx_msdu, u64); 3826 PUT_TIDVAL(TX_MSDU, tx_msdu, u64); 3827 PUT_TIDVAL(TX_MSDU_RETRIES, tx_msdu_retries, u64); 3828 PUT_TIDVAL(TX_MSDU_FAILED, tx_msdu_failed, u64); 3829 3830 #undef PUT_TIDVAL 3831 nla_nest_end(msg, tidattr); 3832 } 3833 3834 nla_nest_end(msg, tidsattr); 3835 } 3836 3837 nla_nest_end(msg, sinfoattr); 3838 3839 if (sinfo->assoc_req_ies_len && 3840 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3841 sinfo->assoc_req_ies)) 3842 goto nla_put_failure; 3843 3844 genlmsg_end(msg, hdr); 3845 return 0; 3846 3847 nla_put_failure: 3848 genlmsg_cancel(msg, hdr); 3849 return -EMSGSIZE; 3850 } 3851 3852 static int nl80211_dump_station(struct sk_buff *skb, 3853 struct netlink_callback *cb) 3854 { 3855 struct station_info sinfo; 3856 struct cfg80211_registered_device *rdev; 3857 struct wireless_dev *wdev; 3858 u8 mac_addr[ETH_ALEN]; 3859 int sta_idx = cb->args[2]; 3860 int err; 3861 3862 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 3863 if (err) 3864 return err; 3865 3866 if (!wdev->netdev) { 3867 err = -EINVAL; 3868 goto out_err; 3869 } 3870 3871 if (!rdev->ops->dump_station) { 3872 err = -EOPNOTSUPP; 3873 goto out_err; 3874 } 3875 3876 while (1) { 3877 memset(&sinfo, 0, sizeof(sinfo)); 3878 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 3879 mac_addr, &sinfo); 3880 if (err == -ENOENT) 3881 break; 3882 if (err) 3883 goto out_err; 3884 3885 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 3886 NETLINK_CB(cb->skb).portid, 3887 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3888 rdev, wdev->netdev, mac_addr, 3889 &sinfo) < 0) 3890 goto out; 3891 3892 sta_idx++; 3893 } 3894 3895 3896 out: 3897 cb->args[2] = sta_idx; 3898 err = skb->len; 3899 out_err: 3900 nl80211_finish_wdev_dump(rdev); 3901 3902 return err; 3903 } 3904 3905 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3906 { 3907 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3908 struct net_device *dev = info->user_ptr[1]; 3909 struct station_info sinfo; 3910 struct sk_buff *msg; 3911 u8 *mac_addr = NULL; 3912 int err; 3913 3914 memset(&sinfo, 0, sizeof(sinfo)); 3915 3916 if (!info->attrs[NL80211_ATTR_MAC]) 3917 return -EINVAL; 3918 3919 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3920 3921 if (!rdev->ops->get_station) 3922 return -EOPNOTSUPP; 3923 3924 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3925 if (err) 3926 return err; 3927 3928 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3929 if (!msg) 3930 return -ENOMEM; 3931 3932 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 3933 info->snd_portid, info->snd_seq, 0, 3934 rdev, dev, mac_addr, &sinfo) < 0) { 3935 nlmsg_free(msg); 3936 return -ENOBUFS; 3937 } 3938 3939 return genlmsg_reply(msg, info); 3940 } 3941 3942 int cfg80211_check_station_change(struct wiphy *wiphy, 3943 struct station_parameters *params, 3944 enum cfg80211_station_type statype) 3945 { 3946 if (params->listen_interval != -1) 3947 return -EINVAL; 3948 if (params->aid && 3949 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3950 return -EINVAL; 3951 3952 /* When you run into this, adjust the code below for the new flag */ 3953 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3954 3955 switch (statype) { 3956 case CFG80211_STA_MESH_PEER_KERNEL: 3957 case CFG80211_STA_MESH_PEER_USER: 3958 /* 3959 * No ignoring the TDLS flag here -- the userspace mesh 3960 * code doesn't have the bug of including TDLS in the 3961 * mask everywhere. 3962 */ 3963 if (params->sta_flags_mask & 3964 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3965 BIT(NL80211_STA_FLAG_MFP) | 3966 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3967 return -EINVAL; 3968 break; 3969 case CFG80211_STA_TDLS_PEER_SETUP: 3970 case CFG80211_STA_TDLS_PEER_ACTIVE: 3971 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3972 return -EINVAL; 3973 /* ignore since it can't change */ 3974 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3975 break; 3976 default: 3977 /* disallow mesh-specific things */ 3978 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3979 return -EINVAL; 3980 if (params->local_pm) 3981 return -EINVAL; 3982 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3983 return -EINVAL; 3984 } 3985 3986 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3987 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3988 /* TDLS can't be set, ... */ 3989 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3990 return -EINVAL; 3991 /* 3992 * ... but don't bother the driver with it. This works around 3993 * a hostapd/wpa_supplicant issue -- it always includes the 3994 * TLDS_PEER flag in the mask even for AP mode. 3995 */ 3996 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3997 } 3998 3999 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 4000 /* reject other things that can't change */ 4001 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4002 return -EINVAL; 4003 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4004 return -EINVAL; 4005 if (params->supported_rates) 4006 return -EINVAL; 4007 if (params->ext_capab || params->ht_capa || params->vht_capa) 4008 return -EINVAL; 4009 } 4010 4011 if (statype != CFG80211_STA_AP_CLIENT) { 4012 if (params->vlan) 4013 return -EINVAL; 4014 } 4015 4016 switch (statype) { 4017 case CFG80211_STA_AP_MLME_CLIENT: 4018 /* Use this only for authorizing/unauthorizing a station */ 4019 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4020 return -EOPNOTSUPP; 4021 break; 4022 case CFG80211_STA_AP_CLIENT: 4023 /* accept only the listed bits */ 4024 if (params->sta_flags_mask & 4025 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4026 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4027 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4028 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4029 BIT(NL80211_STA_FLAG_WME) | 4030 BIT(NL80211_STA_FLAG_MFP))) 4031 return -EINVAL; 4032 4033 /* but authenticated/associated only if driver handles it */ 4034 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4035 params->sta_flags_mask & 4036 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4037 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4038 return -EINVAL; 4039 break; 4040 case CFG80211_STA_IBSS: 4041 case CFG80211_STA_AP_STA: 4042 /* reject any changes other than AUTHORIZED */ 4043 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4044 return -EINVAL; 4045 break; 4046 case CFG80211_STA_TDLS_PEER_SETUP: 4047 /* reject any changes other than AUTHORIZED or WME */ 4048 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4049 BIT(NL80211_STA_FLAG_WME))) 4050 return -EINVAL; 4051 /* force (at least) rates when authorizing */ 4052 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4053 !params->supported_rates) 4054 return -EINVAL; 4055 break; 4056 case CFG80211_STA_TDLS_PEER_ACTIVE: 4057 /* reject any changes */ 4058 return -EINVAL; 4059 case CFG80211_STA_MESH_PEER_KERNEL: 4060 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4061 return -EINVAL; 4062 break; 4063 case CFG80211_STA_MESH_PEER_USER: 4064 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 4065 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 4066 return -EINVAL; 4067 break; 4068 } 4069 4070 return 0; 4071 } 4072 EXPORT_SYMBOL(cfg80211_check_station_change); 4073 4074 /* 4075 * Get vlan interface making sure it is running and on the right wiphy. 4076 */ 4077 static struct net_device *get_vlan(struct genl_info *info, 4078 struct cfg80211_registered_device *rdev) 4079 { 4080 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4081 struct net_device *v; 4082 int ret; 4083 4084 if (!vlanattr) 4085 return NULL; 4086 4087 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4088 if (!v) 4089 return ERR_PTR(-ENODEV); 4090 4091 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4092 ret = -EINVAL; 4093 goto error; 4094 } 4095 4096 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4098 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4099 ret = -EINVAL; 4100 goto error; 4101 } 4102 4103 if (!netif_running(v)) { 4104 ret = -ENETDOWN; 4105 goto error; 4106 } 4107 4108 return v; 4109 error: 4110 dev_put(v); 4111 return ERR_PTR(ret); 4112 } 4113 4114 static const struct nla_policy 4115 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4116 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4117 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4118 }; 4119 4120 static int nl80211_parse_sta_wme(struct genl_info *info, 4121 struct station_parameters *params) 4122 { 4123 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4124 struct nlattr *nla; 4125 int err; 4126 4127 /* parse WME attributes if present */ 4128 if (!info->attrs[NL80211_ATTR_STA_WME]) 4129 return 0; 4130 4131 nla = info->attrs[NL80211_ATTR_STA_WME]; 4132 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4133 nl80211_sta_wme_policy); 4134 if (err) 4135 return err; 4136 4137 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4138 params->uapsd_queues = nla_get_u8( 4139 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4140 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4141 return -EINVAL; 4142 4143 if (tb[NL80211_STA_WME_MAX_SP]) 4144 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4145 4146 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4147 return -EINVAL; 4148 4149 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4150 4151 return 0; 4152 } 4153 4154 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4155 struct station_parameters *params) 4156 { 4157 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4158 params->supported_channels = 4159 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4160 params->supported_channels_len = 4161 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4162 /* 4163 * Need to include at least one (first channel, number of 4164 * channels) tuple for each subband, and must have proper 4165 * tuples for the rest of the data as well. 4166 */ 4167 if (params->supported_channels_len < 2) 4168 return -EINVAL; 4169 if (params->supported_channels_len % 2) 4170 return -EINVAL; 4171 } 4172 4173 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4174 params->supported_oper_classes = 4175 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4176 params->supported_oper_classes_len = 4177 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4178 /* 4179 * The value of the Length field of the Supported Operating 4180 * Classes element is between 2 and 253. 4181 */ 4182 if (params->supported_oper_classes_len < 2 || 4183 params->supported_oper_classes_len > 253) 4184 return -EINVAL; 4185 } 4186 return 0; 4187 } 4188 4189 static int nl80211_set_station_tdls(struct genl_info *info, 4190 struct station_parameters *params) 4191 { 4192 int err; 4193 /* Dummy STA entry gets updated once the peer capabilities are known */ 4194 if (info->attrs[NL80211_ATTR_PEER_AID]) 4195 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4196 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4197 params->ht_capa = 4198 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4199 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4200 params->vht_capa = 4201 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4202 4203 err = nl80211_parse_sta_channel_info(info, params); 4204 if (err) 4205 return err; 4206 4207 return nl80211_parse_sta_wme(info, params); 4208 } 4209 4210 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4211 { 4212 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4213 struct net_device *dev = info->user_ptr[1]; 4214 struct station_parameters params; 4215 u8 *mac_addr; 4216 int err; 4217 4218 memset(¶ms, 0, sizeof(params)); 4219 4220 params.listen_interval = -1; 4221 4222 if (!rdev->ops->change_station) 4223 return -EOPNOTSUPP; 4224 4225 if (info->attrs[NL80211_ATTR_STA_AID]) 4226 return -EINVAL; 4227 4228 if (!info->attrs[NL80211_ATTR_MAC]) 4229 return -EINVAL; 4230 4231 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4232 4233 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4234 params.supported_rates = 4235 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4236 params.supported_rates_len = 4237 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4238 } 4239 4240 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4241 params.capability = 4242 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4243 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4244 } 4245 4246 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4247 params.ext_capab = 4248 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4249 params.ext_capab_len = 4250 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4251 } 4252 4253 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4254 return -EINVAL; 4255 4256 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4257 return -EINVAL; 4258 4259 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4260 params.plink_action = 4261 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4262 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4263 return -EINVAL; 4264 } 4265 4266 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4267 params.plink_state = 4268 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4269 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4270 return -EINVAL; 4271 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4272 } 4273 4274 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4275 enum nl80211_mesh_power_mode pm = nla_get_u32( 4276 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4277 4278 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4279 pm > NL80211_MESH_POWER_MAX) 4280 return -EINVAL; 4281 4282 params.local_pm = pm; 4283 } 4284 4285 /* Include parameters for TDLS peer (will check later) */ 4286 err = nl80211_set_station_tdls(info, ¶ms); 4287 if (err) 4288 return err; 4289 4290 params.vlan = get_vlan(info, rdev); 4291 if (IS_ERR(params.vlan)) 4292 return PTR_ERR(params.vlan); 4293 4294 switch (dev->ieee80211_ptr->iftype) { 4295 case NL80211_IFTYPE_AP: 4296 case NL80211_IFTYPE_AP_VLAN: 4297 case NL80211_IFTYPE_P2P_GO: 4298 case NL80211_IFTYPE_P2P_CLIENT: 4299 case NL80211_IFTYPE_STATION: 4300 case NL80211_IFTYPE_ADHOC: 4301 case NL80211_IFTYPE_MESH_POINT: 4302 break; 4303 default: 4304 err = -EOPNOTSUPP; 4305 goto out_put_vlan; 4306 } 4307 4308 /* driver will call cfg80211_check_station_change() */ 4309 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4310 4311 out_put_vlan: 4312 if (params.vlan) 4313 dev_put(params.vlan); 4314 4315 return err; 4316 } 4317 4318 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4319 { 4320 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4321 int err; 4322 struct net_device *dev = info->user_ptr[1]; 4323 struct station_parameters params; 4324 u8 *mac_addr = NULL; 4325 4326 memset(¶ms, 0, sizeof(params)); 4327 4328 if (!rdev->ops->add_station) 4329 return -EOPNOTSUPP; 4330 4331 if (!info->attrs[NL80211_ATTR_MAC]) 4332 return -EINVAL; 4333 4334 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4335 return -EINVAL; 4336 4337 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4338 return -EINVAL; 4339 4340 if (!info->attrs[NL80211_ATTR_STA_AID] && 4341 !info->attrs[NL80211_ATTR_PEER_AID]) 4342 return -EINVAL; 4343 4344 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4345 params.supported_rates = 4346 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4347 params.supported_rates_len = 4348 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4349 params.listen_interval = 4350 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4351 4352 if (info->attrs[NL80211_ATTR_PEER_AID]) 4353 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4354 else 4355 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4356 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4357 return -EINVAL; 4358 4359 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4360 params.capability = 4361 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4362 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4363 } 4364 4365 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4366 params.ext_capab = 4367 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4368 params.ext_capab_len = 4369 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4370 } 4371 4372 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4373 params.ht_capa = 4374 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4375 4376 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4377 params.vht_capa = 4378 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4379 4380 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4381 params.opmode_notif_used = true; 4382 params.opmode_notif = 4383 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4384 } 4385 4386 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4387 params.plink_action = 4388 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4389 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4390 return -EINVAL; 4391 } 4392 4393 err = nl80211_parse_sta_channel_info(info, ¶ms); 4394 if (err) 4395 return err; 4396 4397 err = nl80211_parse_sta_wme(info, ¶ms); 4398 if (err) 4399 return err; 4400 4401 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4402 return -EINVAL; 4403 4404 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 4405 * as userspace might just pass through the capabilities from the IEs 4406 * directly, rather than enforcing this restriction and returning an 4407 * error in this case. 4408 */ 4409 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 4410 params.ht_capa = NULL; 4411 params.vht_capa = NULL; 4412 } 4413 4414 /* When you run into this, adjust the code below for the new flag */ 4415 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4416 4417 switch (dev->ieee80211_ptr->iftype) { 4418 case NL80211_IFTYPE_AP: 4419 case NL80211_IFTYPE_AP_VLAN: 4420 case NL80211_IFTYPE_P2P_GO: 4421 /* ignore WME attributes if iface/sta is not capable */ 4422 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4423 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4424 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4425 4426 /* TDLS peers cannot be added */ 4427 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4428 info->attrs[NL80211_ATTR_PEER_AID]) 4429 return -EINVAL; 4430 /* but don't bother the driver with it */ 4431 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4432 4433 /* allow authenticated/associated only if driver handles it */ 4434 if (!(rdev->wiphy.features & 4435 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4436 params.sta_flags_mask & 4437 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4438 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4439 return -EINVAL; 4440 4441 /* must be last in here for error handling */ 4442 params.vlan = get_vlan(info, rdev); 4443 if (IS_ERR(params.vlan)) 4444 return PTR_ERR(params.vlan); 4445 break; 4446 case NL80211_IFTYPE_MESH_POINT: 4447 /* ignore uAPSD data */ 4448 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4449 4450 /* associated is disallowed */ 4451 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4452 return -EINVAL; 4453 /* TDLS peers cannot be added */ 4454 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4455 info->attrs[NL80211_ATTR_PEER_AID]) 4456 return -EINVAL; 4457 break; 4458 case NL80211_IFTYPE_STATION: 4459 case NL80211_IFTYPE_P2P_CLIENT: 4460 /* ignore uAPSD data */ 4461 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4462 4463 /* these are disallowed */ 4464 if (params.sta_flags_mask & 4465 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4466 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4467 return -EINVAL; 4468 /* Only TDLS peers can be added */ 4469 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4470 return -EINVAL; 4471 /* Can only add if TDLS ... */ 4472 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4473 return -EOPNOTSUPP; 4474 /* ... with external setup is supported */ 4475 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4476 return -EOPNOTSUPP; 4477 /* 4478 * Older wpa_supplicant versions always mark the TDLS peer 4479 * as authorized, but it shouldn't yet be. 4480 */ 4481 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4482 break; 4483 default: 4484 return -EOPNOTSUPP; 4485 } 4486 4487 /* be aware of params.vlan when changing code here */ 4488 4489 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4490 4491 if (params.vlan) 4492 dev_put(params.vlan); 4493 return err; 4494 } 4495 4496 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4497 { 4498 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4499 struct net_device *dev = info->user_ptr[1]; 4500 struct station_del_parameters params; 4501 4502 memset(¶ms, 0, sizeof(params)); 4503 4504 if (info->attrs[NL80211_ATTR_MAC]) 4505 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4506 4507 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4508 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4509 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4510 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4511 return -EINVAL; 4512 4513 if (!rdev->ops->del_station) 4514 return -EOPNOTSUPP; 4515 4516 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4517 params.subtype = 4518 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4519 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4520 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4521 return -EINVAL; 4522 } else { 4523 /* Default to Deauthentication frame */ 4524 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4525 } 4526 4527 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4528 params.reason_code = 4529 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4530 if (params.reason_code == 0) 4531 return -EINVAL; /* 0 is reserved */ 4532 } else { 4533 /* Default to reason code 2 */ 4534 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4535 } 4536 4537 return rdev_del_station(rdev, dev, ¶ms); 4538 } 4539 4540 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4541 int flags, struct net_device *dev, 4542 u8 *dst, u8 *next_hop, 4543 struct mpath_info *pinfo) 4544 { 4545 void *hdr; 4546 struct nlattr *pinfoattr; 4547 4548 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4549 if (!hdr) 4550 return -1; 4551 4552 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4553 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4554 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4555 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4556 goto nla_put_failure; 4557 4558 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4559 if (!pinfoattr) 4560 goto nla_put_failure; 4561 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4562 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4563 pinfo->frame_qlen)) 4564 goto nla_put_failure; 4565 if (((pinfo->filled & MPATH_INFO_SN) && 4566 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4567 ((pinfo->filled & MPATH_INFO_METRIC) && 4568 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4569 pinfo->metric)) || 4570 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4571 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4572 pinfo->exptime)) || 4573 ((pinfo->filled & MPATH_INFO_FLAGS) && 4574 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4575 pinfo->flags)) || 4576 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4577 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4578 pinfo->discovery_timeout)) || 4579 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4580 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4581 pinfo->discovery_retries))) 4582 goto nla_put_failure; 4583 4584 nla_nest_end(msg, pinfoattr); 4585 4586 genlmsg_end(msg, hdr); 4587 return 0; 4588 4589 nla_put_failure: 4590 genlmsg_cancel(msg, hdr); 4591 return -EMSGSIZE; 4592 } 4593 4594 static int nl80211_dump_mpath(struct sk_buff *skb, 4595 struct netlink_callback *cb) 4596 { 4597 struct mpath_info pinfo; 4598 struct cfg80211_registered_device *rdev; 4599 struct wireless_dev *wdev; 4600 u8 dst[ETH_ALEN]; 4601 u8 next_hop[ETH_ALEN]; 4602 int path_idx = cb->args[2]; 4603 int err; 4604 4605 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4606 if (err) 4607 return err; 4608 4609 if (!rdev->ops->dump_mpath) { 4610 err = -EOPNOTSUPP; 4611 goto out_err; 4612 } 4613 4614 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4615 err = -EOPNOTSUPP; 4616 goto out_err; 4617 } 4618 4619 while (1) { 4620 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4621 next_hop, &pinfo); 4622 if (err == -ENOENT) 4623 break; 4624 if (err) 4625 goto out_err; 4626 4627 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4628 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4629 wdev->netdev, dst, next_hop, 4630 &pinfo) < 0) 4631 goto out; 4632 4633 path_idx++; 4634 } 4635 4636 4637 out: 4638 cb->args[2] = path_idx; 4639 err = skb->len; 4640 out_err: 4641 nl80211_finish_wdev_dump(rdev); 4642 return err; 4643 } 4644 4645 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4646 { 4647 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4648 int err; 4649 struct net_device *dev = info->user_ptr[1]; 4650 struct mpath_info pinfo; 4651 struct sk_buff *msg; 4652 u8 *dst = NULL; 4653 u8 next_hop[ETH_ALEN]; 4654 4655 memset(&pinfo, 0, sizeof(pinfo)); 4656 4657 if (!info->attrs[NL80211_ATTR_MAC]) 4658 return -EINVAL; 4659 4660 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4661 4662 if (!rdev->ops->get_mpath) 4663 return -EOPNOTSUPP; 4664 4665 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4666 return -EOPNOTSUPP; 4667 4668 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4669 if (err) 4670 return err; 4671 4672 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4673 if (!msg) 4674 return -ENOMEM; 4675 4676 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4677 dev, dst, next_hop, &pinfo) < 0) { 4678 nlmsg_free(msg); 4679 return -ENOBUFS; 4680 } 4681 4682 return genlmsg_reply(msg, info); 4683 } 4684 4685 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4686 { 4687 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4688 struct net_device *dev = info->user_ptr[1]; 4689 u8 *dst = NULL; 4690 u8 *next_hop = NULL; 4691 4692 if (!info->attrs[NL80211_ATTR_MAC]) 4693 return -EINVAL; 4694 4695 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4696 return -EINVAL; 4697 4698 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4699 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4700 4701 if (!rdev->ops->change_mpath) 4702 return -EOPNOTSUPP; 4703 4704 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4705 return -EOPNOTSUPP; 4706 4707 return rdev_change_mpath(rdev, dev, dst, next_hop); 4708 } 4709 4710 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4711 { 4712 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4713 struct net_device *dev = info->user_ptr[1]; 4714 u8 *dst = NULL; 4715 u8 *next_hop = NULL; 4716 4717 if (!info->attrs[NL80211_ATTR_MAC]) 4718 return -EINVAL; 4719 4720 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4721 return -EINVAL; 4722 4723 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4724 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4725 4726 if (!rdev->ops->add_mpath) 4727 return -EOPNOTSUPP; 4728 4729 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4730 return -EOPNOTSUPP; 4731 4732 return rdev_add_mpath(rdev, dev, dst, next_hop); 4733 } 4734 4735 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4736 { 4737 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4738 struct net_device *dev = info->user_ptr[1]; 4739 u8 *dst = NULL; 4740 4741 if (info->attrs[NL80211_ATTR_MAC]) 4742 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4743 4744 if (!rdev->ops->del_mpath) 4745 return -EOPNOTSUPP; 4746 4747 return rdev_del_mpath(rdev, dev, dst); 4748 } 4749 4750 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4751 { 4752 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4753 int err; 4754 struct net_device *dev = info->user_ptr[1]; 4755 struct mpath_info pinfo; 4756 struct sk_buff *msg; 4757 u8 *dst = NULL; 4758 u8 mpp[ETH_ALEN]; 4759 4760 memset(&pinfo, 0, sizeof(pinfo)); 4761 4762 if (!info->attrs[NL80211_ATTR_MAC]) 4763 return -EINVAL; 4764 4765 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4766 4767 if (!rdev->ops->get_mpp) 4768 return -EOPNOTSUPP; 4769 4770 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4771 return -EOPNOTSUPP; 4772 4773 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4774 if (err) 4775 return err; 4776 4777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4778 if (!msg) 4779 return -ENOMEM; 4780 4781 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4782 dev, dst, mpp, &pinfo) < 0) { 4783 nlmsg_free(msg); 4784 return -ENOBUFS; 4785 } 4786 4787 return genlmsg_reply(msg, info); 4788 } 4789 4790 static int nl80211_dump_mpp(struct sk_buff *skb, 4791 struct netlink_callback *cb) 4792 { 4793 struct mpath_info pinfo; 4794 struct cfg80211_registered_device *rdev; 4795 struct wireless_dev *wdev; 4796 u8 dst[ETH_ALEN]; 4797 u8 mpp[ETH_ALEN]; 4798 int path_idx = cb->args[2]; 4799 int err; 4800 4801 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4802 if (err) 4803 return err; 4804 4805 if (!rdev->ops->dump_mpp) { 4806 err = -EOPNOTSUPP; 4807 goto out_err; 4808 } 4809 4810 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4811 err = -EOPNOTSUPP; 4812 goto out_err; 4813 } 4814 4815 while (1) { 4816 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4817 mpp, &pinfo); 4818 if (err == -ENOENT) 4819 break; 4820 if (err) 4821 goto out_err; 4822 4823 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4824 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4825 wdev->netdev, dst, mpp, 4826 &pinfo) < 0) 4827 goto out; 4828 4829 path_idx++; 4830 } 4831 4832 out: 4833 cb->args[2] = path_idx; 4834 err = skb->len; 4835 out_err: 4836 nl80211_finish_wdev_dump(rdev); 4837 return err; 4838 } 4839 4840 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4841 { 4842 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4843 struct net_device *dev = info->user_ptr[1]; 4844 struct wireless_dev *wdev = dev->ieee80211_ptr; 4845 struct bss_parameters params; 4846 int err; 4847 4848 memset(¶ms, 0, sizeof(params)); 4849 /* default to not changing parameters */ 4850 params.use_cts_prot = -1; 4851 params.use_short_preamble = -1; 4852 params.use_short_slot_time = -1; 4853 params.ap_isolate = -1; 4854 params.ht_opmode = -1; 4855 params.p2p_ctwindow = -1; 4856 params.p2p_opp_ps = -1; 4857 4858 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4859 params.use_cts_prot = 4860 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4861 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4862 params.use_short_preamble = 4863 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4864 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4865 params.use_short_slot_time = 4866 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4867 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4868 params.basic_rates = 4869 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4870 params.basic_rates_len = 4871 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4872 } 4873 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4874 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4875 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4876 params.ht_opmode = 4877 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4878 4879 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4880 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4881 return -EINVAL; 4882 params.p2p_ctwindow = 4883 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4884 if (params.p2p_ctwindow < 0) 4885 return -EINVAL; 4886 if (params.p2p_ctwindow != 0 && 4887 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4888 return -EINVAL; 4889 } 4890 4891 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4892 u8 tmp; 4893 4894 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4895 return -EINVAL; 4896 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4897 if (tmp > 1) 4898 return -EINVAL; 4899 params.p2p_opp_ps = tmp; 4900 if (params.p2p_opp_ps && 4901 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4902 return -EINVAL; 4903 } 4904 4905 if (!rdev->ops->change_bss) 4906 return -EOPNOTSUPP; 4907 4908 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4909 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4910 return -EOPNOTSUPP; 4911 4912 wdev_lock(wdev); 4913 err = rdev_change_bss(rdev, dev, ¶ms); 4914 wdev_unlock(wdev); 4915 4916 return err; 4917 } 4918 4919 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4920 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4921 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4922 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4923 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4924 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4925 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4926 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 4927 }; 4928 4929 static int parse_reg_rule(struct nlattr *tb[], 4930 struct ieee80211_reg_rule *reg_rule) 4931 { 4932 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4933 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4934 4935 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4936 return -EINVAL; 4937 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4938 return -EINVAL; 4939 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4940 return -EINVAL; 4941 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4942 return -EINVAL; 4943 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4944 return -EINVAL; 4945 4946 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4947 4948 freq_range->start_freq_khz = 4949 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4950 freq_range->end_freq_khz = 4951 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4952 freq_range->max_bandwidth_khz = 4953 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4954 4955 power_rule->max_eirp = 4956 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4957 4958 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4959 power_rule->max_antenna_gain = 4960 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4961 4962 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 4963 reg_rule->dfs_cac_ms = 4964 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 4965 4966 return 0; 4967 } 4968 4969 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4970 { 4971 char *data = NULL; 4972 bool is_indoor; 4973 enum nl80211_user_reg_hint_type user_reg_hint_type; 4974 u32 owner_nlportid; 4975 4976 4977 /* 4978 * You should only get this when cfg80211 hasn't yet initialized 4979 * completely when built-in to the kernel right between the time 4980 * window between nl80211_init() and regulatory_init(), if that is 4981 * even possible. 4982 */ 4983 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4984 return -EINPROGRESS; 4985 4986 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4987 user_reg_hint_type = 4988 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4989 else 4990 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4991 4992 switch (user_reg_hint_type) { 4993 case NL80211_USER_REG_HINT_USER: 4994 case NL80211_USER_REG_HINT_CELL_BASE: 4995 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4996 return -EINVAL; 4997 4998 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4999 return regulatory_hint_user(data, user_reg_hint_type); 5000 case NL80211_USER_REG_HINT_INDOOR: 5001 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5002 owner_nlportid = info->snd_portid; 5003 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5004 } else { 5005 owner_nlportid = 0; 5006 is_indoor = true; 5007 } 5008 5009 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5010 default: 5011 return -EINVAL; 5012 } 5013 } 5014 5015 static int nl80211_get_mesh_config(struct sk_buff *skb, 5016 struct genl_info *info) 5017 { 5018 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5019 struct net_device *dev = info->user_ptr[1]; 5020 struct wireless_dev *wdev = dev->ieee80211_ptr; 5021 struct mesh_config cur_params; 5022 int err = 0; 5023 void *hdr; 5024 struct nlattr *pinfoattr; 5025 struct sk_buff *msg; 5026 5027 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5028 return -EOPNOTSUPP; 5029 5030 if (!rdev->ops->get_mesh_config) 5031 return -EOPNOTSUPP; 5032 5033 wdev_lock(wdev); 5034 /* If not connected, get default parameters */ 5035 if (!wdev->mesh_id_len) 5036 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5037 else 5038 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5039 wdev_unlock(wdev); 5040 5041 if (err) 5042 return err; 5043 5044 /* Draw up a netlink message to send back */ 5045 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5046 if (!msg) 5047 return -ENOMEM; 5048 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5049 NL80211_CMD_GET_MESH_CONFIG); 5050 if (!hdr) 5051 goto out; 5052 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5053 if (!pinfoattr) 5054 goto nla_put_failure; 5055 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5056 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5057 cur_params.dot11MeshRetryTimeout) || 5058 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5059 cur_params.dot11MeshConfirmTimeout) || 5060 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5061 cur_params.dot11MeshHoldingTimeout) || 5062 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5063 cur_params.dot11MeshMaxPeerLinks) || 5064 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5065 cur_params.dot11MeshMaxRetries) || 5066 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5067 cur_params.dot11MeshTTL) || 5068 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5069 cur_params.element_ttl) || 5070 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5071 cur_params.auto_open_plinks) || 5072 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5073 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5074 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5075 cur_params.dot11MeshHWMPmaxPREQretries) || 5076 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5077 cur_params.path_refresh_time) || 5078 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5079 cur_params.min_discovery_timeout) || 5080 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5081 cur_params.dot11MeshHWMPactivePathTimeout) || 5082 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5083 cur_params.dot11MeshHWMPpreqMinInterval) || 5084 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5085 cur_params.dot11MeshHWMPperrMinInterval) || 5086 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5087 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5088 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5089 cur_params.dot11MeshHWMPRootMode) || 5090 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5091 cur_params.dot11MeshHWMPRannInterval) || 5092 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5093 cur_params.dot11MeshGateAnnouncementProtocol) || 5094 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5095 cur_params.dot11MeshForwarding) || 5096 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5097 cur_params.rssi_threshold) || 5098 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5099 cur_params.ht_opmode) || 5100 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5101 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5102 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5103 cur_params.dot11MeshHWMProotInterval) || 5104 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5105 cur_params.dot11MeshHWMPconfirmationInterval) || 5106 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5107 cur_params.power_mode) || 5108 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5109 cur_params.dot11MeshAwakeWindowDuration) || 5110 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5111 cur_params.plink_timeout)) 5112 goto nla_put_failure; 5113 nla_nest_end(msg, pinfoattr); 5114 genlmsg_end(msg, hdr); 5115 return genlmsg_reply(msg, info); 5116 5117 nla_put_failure: 5118 genlmsg_cancel(msg, hdr); 5119 out: 5120 nlmsg_free(msg); 5121 return -ENOBUFS; 5122 } 5123 5124 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5125 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5126 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5127 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5128 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5129 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5130 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5131 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5132 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5133 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5134 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5135 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5136 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5137 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5138 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5139 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5140 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5141 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5142 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5143 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5144 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5145 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5146 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5147 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5148 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5149 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5150 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5151 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5152 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5153 }; 5154 5155 static const struct nla_policy 5156 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5157 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5158 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5159 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5160 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5161 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5162 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5163 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5164 .len = IEEE80211_MAX_DATA_LEN }, 5165 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5166 }; 5167 5168 static int nl80211_parse_mesh_config(struct genl_info *info, 5169 struct mesh_config *cfg, 5170 u32 *mask_out) 5171 { 5172 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5173 u32 mask = 0; 5174 5175 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5176 do { \ 5177 if (tb[attr]) { \ 5178 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5179 return -EINVAL; \ 5180 cfg->param = fn(tb[attr]); \ 5181 mask |= (1 << (attr - 1)); \ 5182 } \ 5183 } while (0) 5184 5185 5186 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5187 return -EINVAL; 5188 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5189 info->attrs[NL80211_ATTR_MESH_CONFIG], 5190 nl80211_meshconf_params_policy)) 5191 return -EINVAL; 5192 5193 /* This makes sure that there aren't more than 32 mesh config 5194 * parameters (otherwise our bitfield scheme would not work.) */ 5195 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5196 5197 /* Fill in the params struct */ 5198 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5199 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5200 nla_get_u16); 5201 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5202 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5203 nla_get_u16); 5204 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5205 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5206 nla_get_u16); 5207 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5208 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5209 nla_get_u16); 5210 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5211 mask, NL80211_MESHCONF_MAX_RETRIES, 5212 nla_get_u8); 5213 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5214 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5216 mask, NL80211_MESHCONF_ELEMENT_TTL, 5217 nla_get_u8); 5218 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5219 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5220 nla_get_u8); 5221 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5222 1, 255, mask, 5223 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5224 nla_get_u32); 5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5226 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5227 nla_get_u8); 5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5229 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5230 nla_get_u32); 5231 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5232 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5233 nla_get_u16); 5234 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5235 1, 65535, mask, 5236 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5237 nla_get_u32); 5238 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5239 1, 65535, mask, 5240 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5241 nla_get_u16); 5242 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5243 1, 65535, mask, 5244 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5245 nla_get_u16); 5246 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5247 dot11MeshHWMPnetDiameterTraversalTime, 5248 1, 65535, mask, 5249 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5250 nla_get_u16); 5251 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5252 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5253 nla_get_u8); 5254 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5255 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5256 nla_get_u16); 5257 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5258 dot11MeshGateAnnouncementProtocol, 0, 1, 5259 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5260 nla_get_u8); 5261 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5262 mask, NL80211_MESHCONF_FORWARDING, 5263 nla_get_u8); 5264 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5265 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5266 nla_get_s32); 5267 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5268 mask, NL80211_MESHCONF_HT_OPMODE, 5269 nla_get_u16); 5270 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5271 1, 65535, mask, 5272 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5273 nla_get_u32); 5274 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5275 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5276 nla_get_u16); 5277 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5278 dot11MeshHWMPconfirmationInterval, 5279 1, 65535, mask, 5280 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5281 nla_get_u16); 5282 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5283 NL80211_MESH_POWER_ACTIVE, 5284 NL80211_MESH_POWER_MAX, 5285 mask, NL80211_MESHCONF_POWER_MODE, 5286 nla_get_u32); 5287 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5288 0, 65535, mask, 5289 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5290 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 5291 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5292 nla_get_u32); 5293 if (mask_out) 5294 *mask_out = mask; 5295 5296 return 0; 5297 5298 #undef FILL_IN_MESH_PARAM_IF_SET 5299 } 5300 5301 static int nl80211_parse_mesh_setup(struct genl_info *info, 5302 struct mesh_setup *setup) 5303 { 5304 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5305 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5306 5307 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5308 return -EINVAL; 5309 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5310 info->attrs[NL80211_ATTR_MESH_SETUP], 5311 nl80211_mesh_setup_params_policy)) 5312 return -EINVAL; 5313 5314 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5315 setup->sync_method = 5316 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5317 IEEE80211_SYNC_METHOD_VENDOR : 5318 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5319 5320 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5321 setup->path_sel_proto = 5322 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5323 IEEE80211_PATH_PROTOCOL_VENDOR : 5324 IEEE80211_PATH_PROTOCOL_HWMP; 5325 5326 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5327 setup->path_metric = 5328 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5329 IEEE80211_PATH_METRIC_VENDOR : 5330 IEEE80211_PATH_METRIC_AIRTIME; 5331 5332 5333 if (tb[NL80211_MESH_SETUP_IE]) { 5334 struct nlattr *ieattr = 5335 tb[NL80211_MESH_SETUP_IE]; 5336 if (!is_valid_ie_attr(ieattr)) 5337 return -EINVAL; 5338 setup->ie = nla_data(ieattr); 5339 setup->ie_len = nla_len(ieattr); 5340 } 5341 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5342 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5343 return -EINVAL; 5344 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5345 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5346 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5347 if (setup->is_secure) 5348 setup->user_mpm = true; 5349 5350 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5351 if (!setup->user_mpm) 5352 return -EINVAL; 5353 setup->auth_id = 5354 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5355 } 5356 5357 return 0; 5358 } 5359 5360 static int nl80211_update_mesh_config(struct sk_buff *skb, 5361 struct genl_info *info) 5362 { 5363 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5364 struct net_device *dev = info->user_ptr[1]; 5365 struct wireless_dev *wdev = dev->ieee80211_ptr; 5366 struct mesh_config cfg; 5367 u32 mask; 5368 int err; 5369 5370 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5371 return -EOPNOTSUPP; 5372 5373 if (!rdev->ops->update_mesh_config) 5374 return -EOPNOTSUPP; 5375 5376 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5377 if (err) 5378 return err; 5379 5380 wdev_lock(wdev); 5381 if (!wdev->mesh_id_len) 5382 err = -ENOLINK; 5383 5384 if (!err) 5385 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5386 5387 wdev_unlock(wdev); 5388 5389 return err; 5390 } 5391 5392 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5393 struct sk_buff *msg) 5394 { 5395 struct nlattr *nl_reg_rules; 5396 unsigned int i; 5397 5398 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5399 (regdom->dfs_region && 5400 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5401 goto nla_put_failure; 5402 5403 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5404 if (!nl_reg_rules) 5405 goto nla_put_failure; 5406 5407 for (i = 0; i < regdom->n_reg_rules; i++) { 5408 struct nlattr *nl_reg_rule; 5409 const struct ieee80211_reg_rule *reg_rule; 5410 const struct ieee80211_freq_range *freq_range; 5411 const struct ieee80211_power_rule *power_rule; 5412 unsigned int max_bandwidth_khz; 5413 5414 reg_rule = ®dom->reg_rules[i]; 5415 freq_range = ®_rule->freq_range; 5416 power_rule = ®_rule->power_rule; 5417 5418 nl_reg_rule = nla_nest_start(msg, i); 5419 if (!nl_reg_rule) 5420 goto nla_put_failure; 5421 5422 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5423 if (!max_bandwidth_khz) 5424 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5425 reg_rule); 5426 5427 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5428 reg_rule->flags) || 5429 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5430 freq_range->start_freq_khz) || 5431 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5432 freq_range->end_freq_khz) || 5433 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5434 max_bandwidth_khz) || 5435 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5436 power_rule->max_antenna_gain) || 5437 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5438 power_rule->max_eirp) || 5439 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5440 reg_rule->dfs_cac_ms)) 5441 goto nla_put_failure; 5442 5443 nla_nest_end(msg, nl_reg_rule); 5444 } 5445 5446 nla_nest_end(msg, nl_reg_rules); 5447 return 0; 5448 5449 nla_put_failure: 5450 return -EMSGSIZE; 5451 } 5452 5453 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5454 { 5455 const struct ieee80211_regdomain *regdom = NULL; 5456 struct cfg80211_registered_device *rdev; 5457 struct wiphy *wiphy = NULL; 5458 struct sk_buff *msg; 5459 void *hdr; 5460 5461 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5462 if (!msg) 5463 return -ENOBUFS; 5464 5465 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5466 NL80211_CMD_GET_REG); 5467 if (!hdr) 5468 goto put_failure; 5469 5470 if (info->attrs[NL80211_ATTR_WIPHY]) { 5471 bool self_managed; 5472 5473 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5474 if (IS_ERR(rdev)) { 5475 nlmsg_free(msg); 5476 return PTR_ERR(rdev); 5477 } 5478 5479 wiphy = &rdev->wiphy; 5480 self_managed = wiphy->regulatory_flags & 5481 REGULATORY_WIPHY_SELF_MANAGED; 5482 regdom = get_wiphy_regdom(wiphy); 5483 5484 /* a self-managed-reg device must have a private regdom */ 5485 if (WARN_ON(!regdom && self_managed)) { 5486 nlmsg_free(msg); 5487 return -EINVAL; 5488 } 5489 5490 if (regdom && 5491 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5492 goto nla_put_failure; 5493 } 5494 5495 if (!wiphy && reg_last_request_cell_base() && 5496 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5497 NL80211_USER_REG_HINT_CELL_BASE)) 5498 goto nla_put_failure; 5499 5500 rcu_read_lock(); 5501 5502 if (!regdom) 5503 regdom = rcu_dereference(cfg80211_regdomain); 5504 5505 if (nl80211_put_regdom(regdom, msg)) 5506 goto nla_put_failure_rcu; 5507 5508 rcu_read_unlock(); 5509 5510 genlmsg_end(msg, hdr); 5511 return genlmsg_reply(msg, info); 5512 5513 nla_put_failure_rcu: 5514 rcu_read_unlock(); 5515 nla_put_failure: 5516 genlmsg_cancel(msg, hdr); 5517 put_failure: 5518 nlmsg_free(msg); 5519 return -EMSGSIZE; 5520 } 5521 5522 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5523 u32 seq, int flags, struct wiphy *wiphy, 5524 const struct ieee80211_regdomain *regdom) 5525 { 5526 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5527 NL80211_CMD_GET_REG); 5528 5529 if (!hdr) 5530 return -1; 5531 5532 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5533 5534 if (nl80211_put_regdom(regdom, msg)) 5535 goto nla_put_failure; 5536 5537 if (!wiphy && reg_last_request_cell_base() && 5538 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5539 NL80211_USER_REG_HINT_CELL_BASE)) 5540 goto nla_put_failure; 5541 5542 if (wiphy && 5543 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5544 goto nla_put_failure; 5545 5546 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5547 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5548 goto nla_put_failure; 5549 5550 genlmsg_end(msg, hdr); 5551 return 0; 5552 5553 nla_put_failure: 5554 genlmsg_cancel(msg, hdr); 5555 return -EMSGSIZE; 5556 } 5557 5558 static int nl80211_get_reg_dump(struct sk_buff *skb, 5559 struct netlink_callback *cb) 5560 { 5561 const struct ieee80211_regdomain *regdom = NULL; 5562 struct cfg80211_registered_device *rdev; 5563 int err, reg_idx, start = cb->args[2]; 5564 5565 rtnl_lock(); 5566 5567 if (cfg80211_regdomain && start == 0) { 5568 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5569 NLM_F_MULTI, NULL, 5570 rtnl_dereference(cfg80211_regdomain)); 5571 if (err < 0) 5572 goto out_err; 5573 } 5574 5575 /* the global regdom is idx 0 */ 5576 reg_idx = 1; 5577 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5578 regdom = get_wiphy_regdom(&rdev->wiphy); 5579 if (!regdom) 5580 continue; 5581 5582 if (++reg_idx <= start) 5583 continue; 5584 5585 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5586 NLM_F_MULTI, &rdev->wiphy, regdom); 5587 if (err < 0) { 5588 reg_idx--; 5589 break; 5590 } 5591 } 5592 5593 cb->args[2] = reg_idx; 5594 err = skb->len; 5595 out_err: 5596 rtnl_unlock(); 5597 return err; 5598 } 5599 5600 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5601 { 5602 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5603 struct nlattr *nl_reg_rule; 5604 char *alpha2; 5605 int rem_reg_rules, r; 5606 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5607 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5608 struct ieee80211_regdomain *rd; 5609 5610 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5611 return -EINVAL; 5612 5613 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5614 return -EINVAL; 5615 5616 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5617 5618 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5619 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5620 5621 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5622 rem_reg_rules) { 5623 num_rules++; 5624 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5625 return -EINVAL; 5626 } 5627 5628 if (!reg_is_valid_request(alpha2)) 5629 return -EINVAL; 5630 5631 size_of_regd = sizeof(struct ieee80211_regdomain) + 5632 num_rules * sizeof(struct ieee80211_reg_rule); 5633 5634 rd = kzalloc(size_of_regd, GFP_KERNEL); 5635 if (!rd) 5636 return -ENOMEM; 5637 5638 rd->n_reg_rules = num_rules; 5639 rd->alpha2[0] = alpha2[0]; 5640 rd->alpha2[1] = alpha2[1]; 5641 5642 /* 5643 * Disable DFS master mode if the DFS region was 5644 * not supported or known on this kernel. 5645 */ 5646 if (reg_supported_dfs_region(dfs_region)) 5647 rd->dfs_region = dfs_region; 5648 5649 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5650 rem_reg_rules) { 5651 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5652 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5653 reg_rule_policy); 5654 if (r) 5655 goto bad_reg; 5656 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5657 if (r) 5658 goto bad_reg; 5659 5660 rule_idx++; 5661 5662 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5663 r = -EINVAL; 5664 goto bad_reg; 5665 } 5666 } 5667 5668 r = set_regdom(rd, REGD_SOURCE_CRDA); 5669 /* set_regdom took ownership */ 5670 rd = NULL; 5671 5672 bad_reg: 5673 kfree(rd); 5674 return r; 5675 } 5676 5677 static int validate_scan_freqs(struct nlattr *freqs) 5678 { 5679 struct nlattr *attr1, *attr2; 5680 int n_channels = 0, tmp1, tmp2; 5681 5682 nla_for_each_nested(attr1, freqs, tmp1) { 5683 n_channels++; 5684 /* 5685 * Some hardware has a limited channel list for 5686 * scanning, and it is pretty much nonsensical 5687 * to scan for a channel twice, so disallow that 5688 * and don't require drivers to check that the 5689 * channel list they get isn't longer than what 5690 * they can scan, as long as they can scan all 5691 * the channels they registered at once. 5692 */ 5693 nla_for_each_nested(attr2, freqs, tmp2) 5694 if (attr1 != attr2 && 5695 nla_get_u32(attr1) == nla_get_u32(attr2)) 5696 return 0; 5697 } 5698 5699 return n_channels; 5700 } 5701 5702 static int nl80211_parse_random_mac(struct nlattr **attrs, 5703 u8 *mac_addr, u8 *mac_addr_mask) 5704 { 5705 int i; 5706 5707 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5708 eth_zero_addr(mac_addr); 5709 eth_zero_addr(mac_addr_mask); 5710 mac_addr[0] = 0x2; 5711 mac_addr_mask[0] = 0x3; 5712 5713 return 0; 5714 } 5715 5716 /* need both or none */ 5717 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5718 return -EINVAL; 5719 5720 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5721 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5722 5723 /* don't allow or configure an mcast address */ 5724 if (!is_multicast_ether_addr(mac_addr_mask) || 5725 is_multicast_ether_addr(mac_addr)) 5726 return -EINVAL; 5727 5728 /* 5729 * allow users to pass a MAC address that has bits set outside 5730 * of the mask, but don't bother drivers with having to deal 5731 * with such bits 5732 */ 5733 for (i = 0; i < ETH_ALEN; i++) 5734 mac_addr[i] &= mac_addr_mask[i]; 5735 5736 return 0; 5737 } 5738 5739 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5740 { 5741 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5742 struct wireless_dev *wdev = info->user_ptr[1]; 5743 struct cfg80211_scan_request *request; 5744 struct nlattr *attr; 5745 struct wiphy *wiphy; 5746 int err, tmp, n_ssids = 0, n_channels, i; 5747 size_t ie_len; 5748 5749 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5750 return -EINVAL; 5751 5752 wiphy = &rdev->wiphy; 5753 5754 if (!rdev->ops->scan) 5755 return -EOPNOTSUPP; 5756 5757 if (rdev->scan_req || rdev->scan_msg) { 5758 err = -EBUSY; 5759 goto unlock; 5760 } 5761 5762 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5763 n_channels = validate_scan_freqs( 5764 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5765 if (!n_channels) { 5766 err = -EINVAL; 5767 goto unlock; 5768 } 5769 } else { 5770 n_channels = ieee80211_get_num_supported_channels(wiphy); 5771 } 5772 5773 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5774 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5775 n_ssids++; 5776 5777 if (n_ssids > wiphy->max_scan_ssids) { 5778 err = -EINVAL; 5779 goto unlock; 5780 } 5781 5782 if (info->attrs[NL80211_ATTR_IE]) 5783 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5784 else 5785 ie_len = 0; 5786 5787 if (ie_len > wiphy->max_scan_ie_len) { 5788 err = -EINVAL; 5789 goto unlock; 5790 } 5791 5792 request = kzalloc(sizeof(*request) 5793 + sizeof(*request->ssids) * n_ssids 5794 + sizeof(*request->channels) * n_channels 5795 + ie_len, GFP_KERNEL); 5796 if (!request) { 5797 err = -ENOMEM; 5798 goto unlock; 5799 } 5800 5801 if (n_ssids) 5802 request->ssids = (void *)&request->channels[n_channels]; 5803 request->n_ssids = n_ssids; 5804 if (ie_len) { 5805 if (n_ssids) 5806 request->ie = (void *)(request->ssids + n_ssids); 5807 else 5808 request->ie = (void *)(request->channels + n_channels); 5809 } 5810 5811 i = 0; 5812 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5813 /* user specified, bail out if channel not found */ 5814 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5815 struct ieee80211_channel *chan; 5816 5817 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5818 5819 if (!chan) { 5820 err = -EINVAL; 5821 goto out_free; 5822 } 5823 5824 /* ignore disabled channels */ 5825 if (chan->flags & IEEE80211_CHAN_DISABLED) 5826 continue; 5827 5828 request->channels[i] = chan; 5829 i++; 5830 } 5831 } else { 5832 enum ieee80211_band band; 5833 5834 /* all channels */ 5835 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5836 int j; 5837 if (!wiphy->bands[band]) 5838 continue; 5839 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5840 struct ieee80211_channel *chan; 5841 5842 chan = &wiphy->bands[band]->channels[j]; 5843 5844 if (chan->flags & IEEE80211_CHAN_DISABLED) 5845 continue; 5846 5847 request->channels[i] = chan; 5848 i++; 5849 } 5850 } 5851 } 5852 5853 if (!i) { 5854 err = -EINVAL; 5855 goto out_free; 5856 } 5857 5858 request->n_channels = i; 5859 5860 i = 0; 5861 if (n_ssids) { 5862 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5863 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5864 err = -EINVAL; 5865 goto out_free; 5866 } 5867 request->ssids[i].ssid_len = nla_len(attr); 5868 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5869 i++; 5870 } 5871 } 5872 5873 if (info->attrs[NL80211_ATTR_IE]) { 5874 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5875 memcpy((void *)request->ie, 5876 nla_data(info->attrs[NL80211_ATTR_IE]), 5877 request->ie_len); 5878 } 5879 5880 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5881 if (wiphy->bands[i]) 5882 request->rates[i] = 5883 (1 << wiphy->bands[i]->n_bitrates) - 1; 5884 5885 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5886 nla_for_each_nested(attr, 5887 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5888 tmp) { 5889 enum ieee80211_band band = nla_type(attr); 5890 5891 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5892 err = -EINVAL; 5893 goto out_free; 5894 } 5895 5896 if (!wiphy->bands[band]) 5897 continue; 5898 5899 err = ieee80211_get_ratemask(wiphy->bands[band], 5900 nla_data(attr), 5901 nla_len(attr), 5902 &request->rates[band]); 5903 if (err) 5904 goto out_free; 5905 } 5906 } 5907 5908 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5909 request->flags = nla_get_u32( 5910 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5911 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5912 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5913 err = -EOPNOTSUPP; 5914 goto out_free; 5915 } 5916 5917 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5918 if (!(wiphy->features & 5919 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5920 err = -EOPNOTSUPP; 5921 goto out_free; 5922 } 5923 5924 if (wdev->current_bss) { 5925 err = -EOPNOTSUPP; 5926 goto out_free; 5927 } 5928 5929 err = nl80211_parse_random_mac(info->attrs, 5930 request->mac_addr, 5931 request->mac_addr_mask); 5932 if (err) 5933 goto out_free; 5934 } 5935 } 5936 5937 request->no_cck = 5938 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5939 5940 request->wdev = wdev; 5941 request->wiphy = &rdev->wiphy; 5942 request->scan_start = jiffies; 5943 5944 rdev->scan_req = request; 5945 err = rdev_scan(rdev, request); 5946 5947 if (!err) { 5948 nl80211_send_scan_start(rdev, wdev); 5949 if (wdev->netdev) 5950 dev_hold(wdev->netdev); 5951 } else { 5952 out_free: 5953 rdev->scan_req = NULL; 5954 kfree(request); 5955 } 5956 5957 unlock: 5958 return err; 5959 } 5960 5961 static struct cfg80211_sched_scan_request * 5962 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 5963 struct nlattr **attrs) 5964 { 5965 struct cfg80211_sched_scan_request *request; 5966 struct nlattr *attr; 5967 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5968 u32 interval; 5969 enum ieee80211_band band; 5970 size_t ie_len; 5971 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5972 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 5973 5974 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 5975 return ERR_PTR(-EINVAL); 5976 5977 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5978 return ERR_PTR(-EINVAL); 5979 5980 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5981 if (interval == 0) 5982 return ERR_PTR(-EINVAL); 5983 5984 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5985 n_channels = validate_scan_freqs( 5986 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5987 if (!n_channels) 5988 return ERR_PTR(-EINVAL); 5989 } else { 5990 n_channels = ieee80211_get_num_supported_channels(wiphy); 5991 } 5992 5993 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 5994 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5995 tmp) 5996 n_ssids++; 5997 5998 if (n_ssids > wiphy->max_sched_scan_ssids) 5999 return ERR_PTR(-EINVAL); 6000 6001 /* 6002 * First, count the number of 'real' matchsets. Due to an issue with 6003 * the old implementation, matchsets containing only the RSSI attribute 6004 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 6005 * RSSI for all matchsets, rather than their own matchset for reporting 6006 * all APs with a strong RSSI. This is needed to be compatible with 6007 * older userspace that treated a matchset with only the RSSI as the 6008 * global RSSI for all other matchsets - if there are other matchsets. 6009 */ 6010 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6011 nla_for_each_nested(attr, 6012 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6013 tmp) { 6014 struct nlattr *rssi; 6015 6016 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6017 nla_data(attr), nla_len(attr), 6018 nl80211_match_policy); 6019 if (err) 6020 return ERR_PTR(err); 6021 /* add other standalone attributes here */ 6022 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6023 n_match_sets++; 6024 continue; 6025 } 6026 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6027 if (rssi) 6028 default_match_rssi = nla_get_s32(rssi); 6029 } 6030 } 6031 6032 /* However, if there's no other matchset, add the RSSI one */ 6033 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6034 n_match_sets = 1; 6035 6036 if (n_match_sets > wiphy->max_match_sets) 6037 return ERR_PTR(-EINVAL); 6038 6039 if (attrs[NL80211_ATTR_IE]) 6040 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6041 else 6042 ie_len = 0; 6043 6044 if (ie_len > wiphy->max_sched_scan_ie_len) 6045 return ERR_PTR(-EINVAL); 6046 6047 request = kzalloc(sizeof(*request) 6048 + sizeof(*request->ssids) * n_ssids 6049 + sizeof(*request->match_sets) * n_match_sets 6050 + sizeof(*request->channels) * n_channels 6051 + ie_len, GFP_KERNEL); 6052 if (!request) 6053 return ERR_PTR(-ENOMEM); 6054 6055 if (n_ssids) 6056 request->ssids = (void *)&request->channels[n_channels]; 6057 request->n_ssids = n_ssids; 6058 if (ie_len) { 6059 if (n_ssids) 6060 request->ie = (void *)(request->ssids + n_ssids); 6061 else 6062 request->ie = (void *)(request->channels + n_channels); 6063 } 6064 6065 if (n_match_sets) { 6066 if (request->ie) 6067 request->match_sets = (void *)(request->ie + ie_len); 6068 else if (n_ssids) 6069 request->match_sets = 6070 (void *)(request->ssids + n_ssids); 6071 else 6072 request->match_sets = 6073 (void *)(request->channels + n_channels); 6074 } 6075 request->n_match_sets = n_match_sets; 6076 6077 i = 0; 6078 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6079 /* user specified, bail out if channel not found */ 6080 nla_for_each_nested(attr, 6081 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6082 tmp) { 6083 struct ieee80211_channel *chan; 6084 6085 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6086 6087 if (!chan) { 6088 err = -EINVAL; 6089 goto out_free; 6090 } 6091 6092 /* ignore disabled channels */ 6093 if (chan->flags & IEEE80211_CHAN_DISABLED) 6094 continue; 6095 6096 request->channels[i] = chan; 6097 i++; 6098 } 6099 } else { 6100 /* all channels */ 6101 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6102 int j; 6103 if (!wiphy->bands[band]) 6104 continue; 6105 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6106 struct ieee80211_channel *chan; 6107 6108 chan = &wiphy->bands[band]->channels[j]; 6109 6110 if (chan->flags & IEEE80211_CHAN_DISABLED) 6111 continue; 6112 6113 request->channels[i] = chan; 6114 i++; 6115 } 6116 } 6117 } 6118 6119 if (!i) { 6120 err = -EINVAL; 6121 goto out_free; 6122 } 6123 6124 request->n_channels = i; 6125 6126 i = 0; 6127 if (n_ssids) { 6128 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6129 tmp) { 6130 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6131 err = -EINVAL; 6132 goto out_free; 6133 } 6134 request->ssids[i].ssid_len = nla_len(attr); 6135 memcpy(request->ssids[i].ssid, nla_data(attr), 6136 nla_len(attr)); 6137 i++; 6138 } 6139 } 6140 6141 i = 0; 6142 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6143 nla_for_each_nested(attr, 6144 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6145 tmp) { 6146 struct nlattr *ssid, *rssi; 6147 6148 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6149 nla_data(attr), nla_len(attr), 6150 nl80211_match_policy); 6151 if (err) 6152 goto out_free; 6153 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6154 if (ssid) { 6155 if (WARN_ON(i >= n_match_sets)) { 6156 /* this indicates a programming error, 6157 * the loop above should have verified 6158 * things properly 6159 */ 6160 err = -EINVAL; 6161 goto out_free; 6162 } 6163 6164 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6165 err = -EINVAL; 6166 goto out_free; 6167 } 6168 memcpy(request->match_sets[i].ssid.ssid, 6169 nla_data(ssid), nla_len(ssid)); 6170 request->match_sets[i].ssid.ssid_len = 6171 nla_len(ssid); 6172 /* special attribute - old implemenation w/a */ 6173 request->match_sets[i].rssi_thold = 6174 default_match_rssi; 6175 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6176 if (rssi) 6177 request->match_sets[i].rssi_thold = 6178 nla_get_s32(rssi); 6179 } 6180 i++; 6181 } 6182 6183 /* there was no other matchset, so the RSSI one is alone */ 6184 if (i == 0 && n_match_sets) 6185 request->match_sets[0].rssi_thold = default_match_rssi; 6186 6187 request->min_rssi_thold = INT_MAX; 6188 for (i = 0; i < n_match_sets; i++) 6189 request->min_rssi_thold = 6190 min(request->match_sets[i].rssi_thold, 6191 request->min_rssi_thold); 6192 } else { 6193 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6194 } 6195 6196 if (ie_len) { 6197 request->ie_len = ie_len; 6198 memcpy((void *)request->ie, 6199 nla_data(attrs[NL80211_ATTR_IE]), 6200 request->ie_len); 6201 } 6202 6203 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6204 request->flags = nla_get_u32( 6205 attrs[NL80211_ATTR_SCAN_FLAGS]); 6206 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6207 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6208 err = -EOPNOTSUPP; 6209 goto out_free; 6210 } 6211 6212 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6213 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6214 6215 if (!wdev) /* must be net-detect */ 6216 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6217 6218 if (!(wiphy->features & flg)) { 6219 err = -EOPNOTSUPP; 6220 goto out_free; 6221 } 6222 6223 if (wdev && wdev->current_bss) { 6224 err = -EOPNOTSUPP; 6225 goto out_free; 6226 } 6227 6228 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6229 request->mac_addr_mask); 6230 if (err) 6231 goto out_free; 6232 } 6233 } 6234 6235 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6236 request->delay = 6237 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6238 6239 request->interval = interval; 6240 request->scan_start = jiffies; 6241 6242 return request; 6243 6244 out_free: 6245 kfree(request); 6246 return ERR_PTR(err); 6247 } 6248 6249 static int nl80211_start_sched_scan(struct sk_buff *skb, 6250 struct genl_info *info) 6251 { 6252 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6253 struct net_device *dev = info->user_ptr[1]; 6254 struct wireless_dev *wdev = dev->ieee80211_ptr; 6255 struct cfg80211_sched_scan_request *sched_scan_req; 6256 int err; 6257 6258 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6259 !rdev->ops->sched_scan_start) 6260 return -EOPNOTSUPP; 6261 6262 if (rdev->sched_scan_req) 6263 return -EINPROGRESS; 6264 6265 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6266 info->attrs); 6267 6268 err = PTR_ERR_OR_ZERO(sched_scan_req); 6269 if (err) 6270 goto out_err; 6271 6272 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6273 if (err) 6274 goto out_free; 6275 6276 sched_scan_req->dev = dev; 6277 sched_scan_req->wiphy = &rdev->wiphy; 6278 6279 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6280 sched_scan_req->owner_nlportid = info->snd_portid; 6281 6282 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6283 6284 nl80211_send_sched_scan(rdev, dev, 6285 NL80211_CMD_START_SCHED_SCAN); 6286 return 0; 6287 6288 out_free: 6289 kfree(sched_scan_req); 6290 out_err: 6291 return err; 6292 } 6293 6294 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6295 struct genl_info *info) 6296 { 6297 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6298 6299 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6300 !rdev->ops->sched_scan_stop) 6301 return -EOPNOTSUPP; 6302 6303 return __cfg80211_stop_sched_scan(rdev, false); 6304 } 6305 6306 static int nl80211_start_radar_detection(struct sk_buff *skb, 6307 struct genl_info *info) 6308 { 6309 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6310 struct net_device *dev = info->user_ptr[1]; 6311 struct wireless_dev *wdev = dev->ieee80211_ptr; 6312 struct cfg80211_chan_def chandef; 6313 enum nl80211_dfs_regions dfs_region; 6314 unsigned int cac_time_ms; 6315 int err; 6316 6317 dfs_region = reg_get_dfs_region(wdev->wiphy); 6318 if (dfs_region == NL80211_DFS_UNSET) 6319 return -EINVAL; 6320 6321 err = nl80211_parse_chandef(rdev, info, &chandef); 6322 if (err) 6323 return err; 6324 6325 if (netif_carrier_ok(dev)) 6326 return -EBUSY; 6327 6328 if (wdev->cac_started) 6329 return -EBUSY; 6330 6331 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6332 wdev->iftype); 6333 if (err < 0) 6334 return err; 6335 6336 if (err == 0) 6337 return -EINVAL; 6338 6339 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6340 return -EINVAL; 6341 6342 if (!rdev->ops->start_radar_detection) 6343 return -EOPNOTSUPP; 6344 6345 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6346 if (WARN_ON(!cac_time_ms)) 6347 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6348 6349 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef, 6350 cac_time_ms); 6351 if (!err) { 6352 wdev->chandef = chandef; 6353 wdev->cac_started = true; 6354 wdev->cac_start_time = jiffies; 6355 wdev->cac_time_ms = cac_time_ms; 6356 } 6357 return err; 6358 } 6359 6360 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6361 { 6362 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6363 struct net_device *dev = info->user_ptr[1]; 6364 struct wireless_dev *wdev = dev->ieee80211_ptr; 6365 struct cfg80211_csa_settings params; 6366 /* csa_attrs is defined static to avoid waste of stack size - this 6367 * function is called under RTNL lock, so this should not be a problem. 6368 */ 6369 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6370 int err; 6371 bool need_new_beacon = false; 6372 int len, i; 6373 u32 cs_count; 6374 6375 if (!rdev->ops->channel_switch || 6376 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6377 return -EOPNOTSUPP; 6378 6379 switch (dev->ieee80211_ptr->iftype) { 6380 case NL80211_IFTYPE_AP: 6381 case NL80211_IFTYPE_P2P_GO: 6382 need_new_beacon = true; 6383 6384 /* useless if AP is not running */ 6385 if (!wdev->beacon_interval) 6386 return -ENOTCONN; 6387 break; 6388 case NL80211_IFTYPE_ADHOC: 6389 if (!wdev->ssid_len) 6390 return -ENOTCONN; 6391 break; 6392 case NL80211_IFTYPE_MESH_POINT: 6393 if (!wdev->mesh_id_len) 6394 return -ENOTCONN; 6395 break; 6396 default: 6397 return -EOPNOTSUPP; 6398 } 6399 6400 memset(¶ms, 0, sizeof(params)); 6401 6402 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6403 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6404 return -EINVAL; 6405 6406 /* only important for AP, IBSS and mesh create IEs internally */ 6407 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6408 return -EINVAL; 6409 6410 /* Even though the attribute is u32, the specification says 6411 * u8, so let's make sure we don't overflow. 6412 */ 6413 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6414 if (cs_count > 255) 6415 return -EINVAL; 6416 6417 params.count = cs_count; 6418 6419 if (!need_new_beacon) 6420 goto skip_beacons; 6421 6422 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6423 if (err) 6424 return err; 6425 6426 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6427 info->attrs[NL80211_ATTR_CSA_IES], 6428 nl80211_policy); 6429 if (err) 6430 return err; 6431 6432 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6433 if (err) 6434 return err; 6435 6436 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6437 return -EINVAL; 6438 6439 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6440 if (!len || (len % sizeof(u16))) 6441 return -EINVAL; 6442 6443 params.n_counter_offsets_beacon = len / sizeof(u16); 6444 if (rdev->wiphy.max_num_csa_counters && 6445 (params.n_counter_offsets_beacon > 6446 rdev->wiphy.max_num_csa_counters)) 6447 return -EINVAL; 6448 6449 params.counter_offsets_beacon = 6450 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6451 6452 /* sanity checks - counters should fit and be the same */ 6453 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6454 u16 offset = params.counter_offsets_beacon[i]; 6455 6456 if (offset >= params.beacon_csa.tail_len) 6457 return -EINVAL; 6458 6459 if (params.beacon_csa.tail[offset] != params.count) 6460 return -EINVAL; 6461 } 6462 6463 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6464 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6465 if (!len || (len % sizeof(u16))) 6466 return -EINVAL; 6467 6468 params.n_counter_offsets_presp = len / sizeof(u16); 6469 if (rdev->wiphy.max_num_csa_counters && 6470 (params.n_counter_offsets_beacon > 6471 rdev->wiphy.max_num_csa_counters)) 6472 return -EINVAL; 6473 6474 params.counter_offsets_presp = 6475 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6476 6477 /* sanity checks - counters should fit and be the same */ 6478 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6479 u16 offset = params.counter_offsets_presp[i]; 6480 6481 if (offset >= params.beacon_csa.probe_resp_len) 6482 return -EINVAL; 6483 6484 if (params.beacon_csa.probe_resp[offset] != 6485 params.count) 6486 return -EINVAL; 6487 } 6488 } 6489 6490 skip_beacons: 6491 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6492 if (err) 6493 return err; 6494 6495 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 6496 wdev->iftype)) 6497 return -EINVAL; 6498 6499 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6500 ¶ms.chandef, 6501 wdev->iftype); 6502 if (err < 0) 6503 return err; 6504 6505 if (err > 0) 6506 params.radar_required = true; 6507 6508 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6509 params.block_tx = true; 6510 6511 wdev_lock(wdev); 6512 err = rdev_channel_switch(rdev, dev, ¶ms); 6513 wdev_unlock(wdev); 6514 6515 return err; 6516 } 6517 6518 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6519 u32 seq, int flags, 6520 struct cfg80211_registered_device *rdev, 6521 struct wireless_dev *wdev, 6522 struct cfg80211_internal_bss *intbss) 6523 { 6524 struct cfg80211_bss *res = &intbss->pub; 6525 const struct cfg80211_bss_ies *ies; 6526 void *hdr; 6527 struct nlattr *bss; 6528 6529 ASSERT_WDEV_LOCK(wdev); 6530 6531 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6532 NL80211_CMD_NEW_SCAN_RESULTS); 6533 if (!hdr) 6534 return -1; 6535 6536 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6537 6538 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6539 goto nla_put_failure; 6540 if (wdev->netdev && 6541 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6542 goto nla_put_failure; 6543 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6544 goto nla_put_failure; 6545 6546 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6547 if (!bss) 6548 goto nla_put_failure; 6549 if ((!is_zero_ether_addr(res->bssid) && 6550 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6551 goto nla_put_failure; 6552 6553 rcu_read_lock(); 6554 /* indicate whether we have probe response data or not */ 6555 if (rcu_access_pointer(res->proberesp_ies) && 6556 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6557 goto fail_unlock_rcu; 6558 6559 /* this pointer prefers to be pointed to probe response data 6560 * but is always valid 6561 */ 6562 ies = rcu_dereference(res->ies); 6563 if (ies) { 6564 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6565 goto fail_unlock_rcu; 6566 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6567 ies->len, ies->data)) 6568 goto fail_unlock_rcu; 6569 } 6570 6571 /* and this pointer is always (unless driver didn't know) beacon data */ 6572 ies = rcu_dereference(res->beacon_ies); 6573 if (ies && ies->from_beacon) { 6574 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6575 goto fail_unlock_rcu; 6576 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6577 ies->len, ies->data)) 6578 goto fail_unlock_rcu; 6579 } 6580 rcu_read_unlock(); 6581 6582 if (res->beacon_interval && 6583 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6584 goto nla_put_failure; 6585 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6586 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6587 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6588 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6589 jiffies_to_msecs(jiffies - intbss->ts))) 6590 goto nla_put_failure; 6591 6592 switch (rdev->wiphy.signal_type) { 6593 case CFG80211_SIGNAL_TYPE_MBM: 6594 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6595 goto nla_put_failure; 6596 break; 6597 case CFG80211_SIGNAL_TYPE_UNSPEC: 6598 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6599 goto nla_put_failure; 6600 break; 6601 default: 6602 break; 6603 } 6604 6605 switch (wdev->iftype) { 6606 case NL80211_IFTYPE_P2P_CLIENT: 6607 case NL80211_IFTYPE_STATION: 6608 if (intbss == wdev->current_bss && 6609 nla_put_u32(msg, NL80211_BSS_STATUS, 6610 NL80211_BSS_STATUS_ASSOCIATED)) 6611 goto nla_put_failure; 6612 break; 6613 case NL80211_IFTYPE_ADHOC: 6614 if (intbss == wdev->current_bss && 6615 nla_put_u32(msg, NL80211_BSS_STATUS, 6616 NL80211_BSS_STATUS_IBSS_JOINED)) 6617 goto nla_put_failure; 6618 break; 6619 default: 6620 break; 6621 } 6622 6623 nla_nest_end(msg, bss); 6624 6625 genlmsg_end(msg, hdr); 6626 return 0; 6627 6628 fail_unlock_rcu: 6629 rcu_read_unlock(); 6630 nla_put_failure: 6631 genlmsg_cancel(msg, hdr); 6632 return -EMSGSIZE; 6633 } 6634 6635 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6636 { 6637 struct cfg80211_registered_device *rdev; 6638 struct cfg80211_internal_bss *scan; 6639 struct wireless_dev *wdev; 6640 int start = cb->args[2], idx = 0; 6641 int err; 6642 6643 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6644 if (err) 6645 return err; 6646 6647 wdev_lock(wdev); 6648 spin_lock_bh(&rdev->bss_lock); 6649 cfg80211_bss_expire(rdev); 6650 6651 cb->seq = rdev->bss_generation; 6652 6653 list_for_each_entry(scan, &rdev->bss_list, list) { 6654 if (++idx <= start) 6655 continue; 6656 if (nl80211_send_bss(skb, cb, 6657 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6658 rdev, wdev, scan) < 0) { 6659 idx--; 6660 break; 6661 } 6662 } 6663 6664 spin_unlock_bh(&rdev->bss_lock); 6665 wdev_unlock(wdev); 6666 6667 cb->args[2] = idx; 6668 nl80211_finish_wdev_dump(rdev); 6669 6670 return skb->len; 6671 } 6672 6673 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6674 int flags, struct net_device *dev, 6675 bool allow_radio_stats, 6676 struct survey_info *survey) 6677 { 6678 void *hdr; 6679 struct nlattr *infoattr; 6680 6681 /* skip radio stats if userspace didn't request them */ 6682 if (!survey->channel && !allow_radio_stats) 6683 return 0; 6684 6685 hdr = nl80211hdr_put(msg, portid, seq, flags, 6686 NL80211_CMD_NEW_SURVEY_RESULTS); 6687 if (!hdr) 6688 return -ENOMEM; 6689 6690 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6691 goto nla_put_failure; 6692 6693 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6694 if (!infoattr) 6695 goto nla_put_failure; 6696 6697 if (survey->channel && 6698 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6699 survey->channel->center_freq)) 6700 goto nla_put_failure; 6701 6702 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6703 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6704 goto nla_put_failure; 6705 if ((survey->filled & SURVEY_INFO_IN_USE) && 6706 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6707 goto nla_put_failure; 6708 if ((survey->filled & SURVEY_INFO_TIME) && 6709 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME, 6710 survey->time)) 6711 goto nla_put_failure; 6712 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 6713 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY, 6714 survey->time_busy)) 6715 goto nla_put_failure; 6716 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 6717 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 6718 survey->time_ext_busy)) 6719 goto nla_put_failure; 6720 if ((survey->filled & SURVEY_INFO_TIME_RX) && 6721 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX, 6722 survey->time_rx)) 6723 goto nla_put_failure; 6724 if ((survey->filled & SURVEY_INFO_TIME_TX) && 6725 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX, 6726 survey->time_tx)) 6727 goto nla_put_failure; 6728 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 6729 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN, 6730 survey->time_scan)) 6731 goto nla_put_failure; 6732 6733 nla_nest_end(msg, infoattr); 6734 6735 genlmsg_end(msg, hdr); 6736 return 0; 6737 6738 nla_put_failure: 6739 genlmsg_cancel(msg, hdr); 6740 return -EMSGSIZE; 6741 } 6742 6743 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 6744 { 6745 struct survey_info survey; 6746 struct cfg80211_registered_device *rdev; 6747 struct wireless_dev *wdev; 6748 int survey_idx = cb->args[2]; 6749 int res; 6750 bool radio_stats; 6751 6752 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6753 if (res) 6754 return res; 6755 6756 /* prepare_wdev_dump parsed the attributes */ 6757 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 6758 6759 if (!wdev->netdev) { 6760 res = -EINVAL; 6761 goto out_err; 6762 } 6763 6764 if (!rdev->ops->dump_survey) { 6765 res = -EOPNOTSUPP; 6766 goto out_err; 6767 } 6768 6769 while (1) { 6770 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6771 if (res == -ENOENT) 6772 break; 6773 if (res) 6774 goto out_err; 6775 6776 /* don't send disabled channels, but do send non-channel data */ 6777 if (survey.channel && 6778 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6779 survey_idx++; 6780 continue; 6781 } 6782 6783 if (nl80211_send_survey(skb, 6784 NETLINK_CB(cb->skb).portid, 6785 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6786 wdev->netdev, radio_stats, &survey) < 0) 6787 goto out; 6788 survey_idx++; 6789 } 6790 6791 out: 6792 cb->args[2] = survey_idx; 6793 res = skb->len; 6794 out_err: 6795 nl80211_finish_wdev_dump(rdev); 6796 return res; 6797 } 6798 6799 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6800 { 6801 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6802 NL80211_WPA_VERSION_2)); 6803 } 6804 6805 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6806 { 6807 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6808 struct net_device *dev = info->user_ptr[1]; 6809 struct ieee80211_channel *chan; 6810 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6811 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6812 enum nl80211_auth_type auth_type; 6813 struct key_parse key; 6814 bool local_state_change; 6815 6816 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6817 return -EINVAL; 6818 6819 if (!info->attrs[NL80211_ATTR_MAC]) 6820 return -EINVAL; 6821 6822 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6823 return -EINVAL; 6824 6825 if (!info->attrs[NL80211_ATTR_SSID]) 6826 return -EINVAL; 6827 6828 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6829 return -EINVAL; 6830 6831 err = nl80211_parse_key(info, &key); 6832 if (err) 6833 return err; 6834 6835 if (key.idx >= 0) { 6836 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6837 return -EINVAL; 6838 if (!key.p.key || !key.p.key_len) 6839 return -EINVAL; 6840 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6841 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6842 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6843 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6844 return -EINVAL; 6845 if (key.idx > 4) 6846 return -EINVAL; 6847 } else { 6848 key.p.key_len = 0; 6849 key.p.key = NULL; 6850 } 6851 6852 if (key.idx >= 0) { 6853 int i; 6854 bool ok = false; 6855 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6856 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6857 ok = true; 6858 break; 6859 } 6860 } 6861 if (!ok) 6862 return -EINVAL; 6863 } 6864 6865 if (!rdev->ops->auth) 6866 return -EOPNOTSUPP; 6867 6868 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6869 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6870 return -EOPNOTSUPP; 6871 6872 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6873 chan = nl80211_get_valid_chan(&rdev->wiphy, 6874 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6875 if (!chan) 6876 return -EINVAL; 6877 6878 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6879 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6880 6881 if (info->attrs[NL80211_ATTR_IE]) { 6882 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6883 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6884 } 6885 6886 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6887 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6888 return -EINVAL; 6889 6890 if (auth_type == NL80211_AUTHTYPE_SAE && 6891 !info->attrs[NL80211_ATTR_SAE_DATA]) 6892 return -EINVAL; 6893 6894 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6895 if (auth_type != NL80211_AUTHTYPE_SAE) 6896 return -EINVAL; 6897 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6898 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6899 /* need to include at least Auth Transaction and Status Code */ 6900 if (sae_data_len < 4) 6901 return -EINVAL; 6902 } 6903 6904 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6905 6906 /* 6907 * Since we no longer track auth state, ignore 6908 * requests to only change local state. 6909 */ 6910 if (local_state_change) 6911 return 0; 6912 6913 wdev_lock(dev->ieee80211_ptr); 6914 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6915 ssid, ssid_len, ie, ie_len, 6916 key.p.key, key.p.key_len, key.idx, 6917 sae_data, sae_data_len); 6918 wdev_unlock(dev->ieee80211_ptr); 6919 return err; 6920 } 6921 6922 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6923 struct genl_info *info, 6924 struct cfg80211_crypto_settings *settings, 6925 int cipher_limit) 6926 { 6927 memset(settings, 0, sizeof(*settings)); 6928 6929 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6930 6931 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6932 u16 proto; 6933 proto = nla_get_u16( 6934 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6935 settings->control_port_ethertype = cpu_to_be16(proto); 6936 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6937 proto != ETH_P_PAE) 6938 return -EINVAL; 6939 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6940 settings->control_port_no_encrypt = true; 6941 } else 6942 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6943 6944 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6945 void *data; 6946 int len, i; 6947 6948 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6949 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6950 settings->n_ciphers_pairwise = len / sizeof(u32); 6951 6952 if (len % sizeof(u32)) 6953 return -EINVAL; 6954 6955 if (settings->n_ciphers_pairwise > cipher_limit) 6956 return -EINVAL; 6957 6958 memcpy(settings->ciphers_pairwise, data, len); 6959 6960 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6961 if (!cfg80211_supported_cipher_suite( 6962 &rdev->wiphy, 6963 settings->ciphers_pairwise[i])) 6964 return -EINVAL; 6965 } 6966 6967 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6968 settings->cipher_group = 6969 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6970 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6971 settings->cipher_group)) 6972 return -EINVAL; 6973 } 6974 6975 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6976 settings->wpa_versions = 6977 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6978 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6979 return -EINVAL; 6980 } 6981 6982 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6983 void *data; 6984 int len; 6985 6986 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6987 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6988 settings->n_akm_suites = len / sizeof(u32); 6989 6990 if (len % sizeof(u32)) 6991 return -EINVAL; 6992 6993 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6994 return -EINVAL; 6995 6996 memcpy(settings->akm_suites, data, len); 6997 } 6998 6999 return 0; 7000 } 7001 7002 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 7003 { 7004 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7005 struct net_device *dev = info->user_ptr[1]; 7006 struct ieee80211_channel *chan; 7007 struct cfg80211_assoc_request req = {}; 7008 const u8 *bssid, *ssid; 7009 int err, ssid_len = 0; 7010 7011 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7012 return -EINVAL; 7013 7014 if (!info->attrs[NL80211_ATTR_MAC] || 7015 !info->attrs[NL80211_ATTR_SSID] || 7016 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7017 return -EINVAL; 7018 7019 if (!rdev->ops->assoc) 7020 return -EOPNOTSUPP; 7021 7022 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7023 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7024 return -EOPNOTSUPP; 7025 7026 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7027 7028 chan = nl80211_get_valid_chan(&rdev->wiphy, 7029 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7030 if (!chan) 7031 return -EINVAL; 7032 7033 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7034 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7035 7036 if (info->attrs[NL80211_ATTR_IE]) { 7037 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7038 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7039 } 7040 7041 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7042 enum nl80211_mfp mfp = 7043 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7044 if (mfp == NL80211_MFP_REQUIRED) 7045 req.use_mfp = true; 7046 else if (mfp != NL80211_MFP_NO) 7047 return -EINVAL; 7048 } 7049 7050 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7051 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7052 7053 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7054 req.flags |= ASSOC_REQ_DISABLE_HT; 7055 7056 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7057 memcpy(&req.ht_capa_mask, 7058 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7059 sizeof(req.ht_capa_mask)); 7060 7061 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7062 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7063 return -EINVAL; 7064 memcpy(&req.ht_capa, 7065 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7066 sizeof(req.ht_capa)); 7067 } 7068 7069 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7070 req.flags |= ASSOC_REQ_DISABLE_VHT; 7071 7072 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7073 memcpy(&req.vht_capa_mask, 7074 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7075 sizeof(req.vht_capa_mask)); 7076 7077 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7078 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7079 return -EINVAL; 7080 memcpy(&req.vht_capa, 7081 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7082 sizeof(req.vht_capa)); 7083 } 7084 7085 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7086 if (!(rdev->wiphy.features & 7087 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7088 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7089 return -EINVAL; 7090 req.flags |= ASSOC_REQ_USE_RRM; 7091 } 7092 7093 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7094 if (!err) { 7095 wdev_lock(dev->ieee80211_ptr); 7096 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7097 ssid, ssid_len, &req); 7098 wdev_unlock(dev->ieee80211_ptr); 7099 } 7100 7101 return err; 7102 } 7103 7104 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7105 { 7106 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7107 struct net_device *dev = info->user_ptr[1]; 7108 const u8 *ie = NULL, *bssid; 7109 int ie_len = 0, err; 7110 u16 reason_code; 7111 bool local_state_change; 7112 7113 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7114 return -EINVAL; 7115 7116 if (!info->attrs[NL80211_ATTR_MAC]) 7117 return -EINVAL; 7118 7119 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7120 return -EINVAL; 7121 7122 if (!rdev->ops->deauth) 7123 return -EOPNOTSUPP; 7124 7125 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7126 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7127 return -EOPNOTSUPP; 7128 7129 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7130 7131 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7132 if (reason_code == 0) { 7133 /* Reason Code 0 is reserved */ 7134 return -EINVAL; 7135 } 7136 7137 if (info->attrs[NL80211_ATTR_IE]) { 7138 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7139 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7140 } 7141 7142 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7143 7144 wdev_lock(dev->ieee80211_ptr); 7145 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7146 local_state_change); 7147 wdev_unlock(dev->ieee80211_ptr); 7148 return err; 7149 } 7150 7151 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7152 { 7153 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7154 struct net_device *dev = info->user_ptr[1]; 7155 const u8 *ie = NULL, *bssid; 7156 int ie_len = 0, err; 7157 u16 reason_code; 7158 bool local_state_change; 7159 7160 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7161 return -EINVAL; 7162 7163 if (!info->attrs[NL80211_ATTR_MAC]) 7164 return -EINVAL; 7165 7166 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7167 return -EINVAL; 7168 7169 if (!rdev->ops->disassoc) 7170 return -EOPNOTSUPP; 7171 7172 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7173 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7174 return -EOPNOTSUPP; 7175 7176 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7177 7178 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7179 if (reason_code == 0) { 7180 /* Reason Code 0 is reserved */ 7181 return -EINVAL; 7182 } 7183 7184 if (info->attrs[NL80211_ATTR_IE]) { 7185 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7186 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7187 } 7188 7189 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7190 7191 wdev_lock(dev->ieee80211_ptr); 7192 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7193 local_state_change); 7194 wdev_unlock(dev->ieee80211_ptr); 7195 return err; 7196 } 7197 7198 static bool 7199 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7200 int mcast_rate[IEEE80211_NUM_BANDS], 7201 int rateval) 7202 { 7203 struct wiphy *wiphy = &rdev->wiphy; 7204 bool found = false; 7205 int band, i; 7206 7207 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7208 struct ieee80211_supported_band *sband; 7209 7210 sband = wiphy->bands[band]; 7211 if (!sband) 7212 continue; 7213 7214 for (i = 0; i < sband->n_bitrates; i++) { 7215 if (sband->bitrates[i].bitrate == rateval) { 7216 mcast_rate[band] = i + 1; 7217 found = true; 7218 break; 7219 } 7220 } 7221 } 7222 7223 return found; 7224 } 7225 7226 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7227 { 7228 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7229 struct net_device *dev = info->user_ptr[1]; 7230 struct cfg80211_ibss_params ibss; 7231 struct wiphy *wiphy; 7232 struct cfg80211_cached_keys *connkeys = NULL; 7233 int err; 7234 7235 memset(&ibss, 0, sizeof(ibss)); 7236 7237 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7238 return -EINVAL; 7239 7240 if (!info->attrs[NL80211_ATTR_SSID] || 7241 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7242 return -EINVAL; 7243 7244 ibss.beacon_interval = 100; 7245 7246 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7247 ibss.beacon_interval = 7248 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7249 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7250 return -EINVAL; 7251 } 7252 7253 if (!rdev->ops->join_ibss) 7254 return -EOPNOTSUPP; 7255 7256 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7257 return -EOPNOTSUPP; 7258 7259 wiphy = &rdev->wiphy; 7260 7261 if (info->attrs[NL80211_ATTR_MAC]) { 7262 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7263 7264 if (!is_valid_ether_addr(ibss.bssid)) 7265 return -EINVAL; 7266 } 7267 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7268 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7269 7270 if (info->attrs[NL80211_ATTR_IE]) { 7271 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7272 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7273 } 7274 7275 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7276 if (err) 7277 return err; 7278 7279 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7280 NL80211_IFTYPE_ADHOC)) 7281 return -EINVAL; 7282 7283 switch (ibss.chandef.width) { 7284 case NL80211_CHAN_WIDTH_5: 7285 case NL80211_CHAN_WIDTH_10: 7286 case NL80211_CHAN_WIDTH_20_NOHT: 7287 break; 7288 case NL80211_CHAN_WIDTH_20: 7289 case NL80211_CHAN_WIDTH_40: 7290 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7291 return -EINVAL; 7292 break; 7293 case NL80211_CHAN_WIDTH_80: 7294 case NL80211_CHAN_WIDTH_80P80: 7295 case NL80211_CHAN_WIDTH_160: 7296 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7297 return -EINVAL; 7298 if (!wiphy_ext_feature_isset(&rdev->wiphy, 7299 NL80211_EXT_FEATURE_VHT_IBSS)) 7300 return -EINVAL; 7301 break; 7302 default: 7303 return -EINVAL; 7304 } 7305 7306 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7307 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7308 7309 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7310 u8 *rates = 7311 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7312 int n_rates = 7313 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7314 struct ieee80211_supported_band *sband = 7315 wiphy->bands[ibss.chandef.chan->band]; 7316 7317 err = ieee80211_get_ratemask(sband, rates, n_rates, 7318 &ibss.basic_rates); 7319 if (err) 7320 return err; 7321 } 7322 7323 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7324 memcpy(&ibss.ht_capa_mask, 7325 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7326 sizeof(ibss.ht_capa_mask)); 7327 7328 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7329 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7330 return -EINVAL; 7331 memcpy(&ibss.ht_capa, 7332 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7333 sizeof(ibss.ht_capa)); 7334 } 7335 7336 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7337 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7338 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7339 return -EINVAL; 7340 7341 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7342 bool no_ht = false; 7343 7344 connkeys = nl80211_parse_connkeys(rdev, 7345 info->attrs[NL80211_ATTR_KEYS], 7346 &no_ht); 7347 if (IS_ERR(connkeys)) 7348 return PTR_ERR(connkeys); 7349 7350 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7351 no_ht) { 7352 kfree(connkeys); 7353 return -EINVAL; 7354 } 7355 } 7356 7357 ibss.control_port = 7358 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7359 7360 ibss.userspace_handles_dfs = 7361 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7362 7363 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7364 if (err) 7365 kzfree(connkeys); 7366 return err; 7367 } 7368 7369 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7370 { 7371 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7372 struct net_device *dev = info->user_ptr[1]; 7373 7374 if (!rdev->ops->leave_ibss) 7375 return -EOPNOTSUPP; 7376 7377 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7378 return -EOPNOTSUPP; 7379 7380 return cfg80211_leave_ibss(rdev, dev, false); 7381 } 7382 7383 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7384 { 7385 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7386 struct net_device *dev = info->user_ptr[1]; 7387 int mcast_rate[IEEE80211_NUM_BANDS]; 7388 u32 nla_rate; 7389 int err; 7390 7391 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7392 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 7393 return -EOPNOTSUPP; 7394 7395 if (!rdev->ops->set_mcast_rate) 7396 return -EOPNOTSUPP; 7397 7398 memset(mcast_rate, 0, sizeof(mcast_rate)); 7399 7400 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7401 return -EINVAL; 7402 7403 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7404 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7405 return -EINVAL; 7406 7407 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 7408 7409 return err; 7410 } 7411 7412 static struct sk_buff * 7413 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7414 struct wireless_dev *wdev, int approxlen, 7415 u32 portid, u32 seq, enum nl80211_commands cmd, 7416 enum nl80211_attrs attr, 7417 const struct nl80211_vendor_cmd_info *info, 7418 gfp_t gfp) 7419 { 7420 struct sk_buff *skb; 7421 void *hdr; 7422 struct nlattr *data; 7423 7424 skb = nlmsg_new(approxlen + 100, gfp); 7425 if (!skb) 7426 return NULL; 7427 7428 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7429 if (!hdr) { 7430 kfree_skb(skb); 7431 return NULL; 7432 } 7433 7434 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7435 goto nla_put_failure; 7436 7437 if (info) { 7438 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7439 info->vendor_id)) 7440 goto nla_put_failure; 7441 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7442 info->subcmd)) 7443 goto nla_put_failure; 7444 } 7445 7446 if (wdev) { 7447 if (nla_put_u64(skb, NL80211_ATTR_WDEV, 7448 wdev_id(wdev))) 7449 goto nla_put_failure; 7450 if (wdev->netdev && 7451 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 7452 wdev->netdev->ifindex)) 7453 goto nla_put_failure; 7454 } 7455 7456 data = nla_nest_start(skb, attr); 7457 7458 ((void **)skb->cb)[0] = rdev; 7459 ((void **)skb->cb)[1] = hdr; 7460 ((void **)skb->cb)[2] = data; 7461 7462 return skb; 7463 7464 nla_put_failure: 7465 kfree_skb(skb); 7466 return NULL; 7467 } 7468 7469 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7470 struct wireless_dev *wdev, 7471 enum nl80211_commands cmd, 7472 enum nl80211_attrs attr, 7473 int vendor_event_idx, 7474 int approxlen, gfp_t gfp) 7475 { 7476 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7477 const struct nl80211_vendor_cmd_info *info; 7478 7479 switch (cmd) { 7480 case NL80211_CMD_TESTMODE: 7481 if (WARN_ON(vendor_event_idx != -1)) 7482 return NULL; 7483 info = NULL; 7484 break; 7485 case NL80211_CMD_VENDOR: 7486 if (WARN_ON(vendor_event_idx < 0 || 7487 vendor_event_idx >= wiphy->n_vendor_events)) 7488 return NULL; 7489 info = &wiphy->vendor_events[vendor_event_idx]; 7490 break; 7491 default: 7492 WARN_ON(1); 7493 return NULL; 7494 } 7495 7496 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 7497 cmd, attr, info, gfp); 7498 } 7499 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7500 7501 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7502 { 7503 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7504 void *hdr = ((void **)skb->cb)[1]; 7505 struct nlattr *data = ((void **)skb->cb)[2]; 7506 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7507 7508 /* clear CB data for netlink core to own from now on */ 7509 memset(skb->cb, 0, sizeof(skb->cb)); 7510 7511 nla_nest_end(skb, data); 7512 genlmsg_end(skb, hdr); 7513 7514 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7515 mcgrp = NL80211_MCGRP_VENDOR; 7516 7517 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7518 mcgrp, gfp); 7519 } 7520 EXPORT_SYMBOL(__cfg80211_send_event_skb); 7521 7522 #ifdef CONFIG_NL80211_TESTMODE 7523 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7524 { 7525 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7526 struct wireless_dev *wdev = 7527 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7528 int err; 7529 7530 if (!rdev->ops->testmode_cmd) 7531 return -EOPNOTSUPP; 7532 7533 if (IS_ERR(wdev)) { 7534 err = PTR_ERR(wdev); 7535 if (err != -EINVAL) 7536 return err; 7537 wdev = NULL; 7538 } else if (wdev->wiphy != &rdev->wiphy) { 7539 return -EINVAL; 7540 } 7541 7542 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7543 return -EINVAL; 7544 7545 rdev->cur_cmd_info = info; 7546 err = rdev_testmode_cmd(rdev, wdev, 7547 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7548 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7549 rdev->cur_cmd_info = NULL; 7550 7551 return err; 7552 } 7553 7554 static int nl80211_testmode_dump(struct sk_buff *skb, 7555 struct netlink_callback *cb) 7556 { 7557 struct cfg80211_registered_device *rdev; 7558 int err; 7559 long phy_idx; 7560 void *data = NULL; 7561 int data_len = 0; 7562 7563 rtnl_lock(); 7564 7565 if (cb->args[0]) { 7566 /* 7567 * 0 is a valid index, but not valid for args[0], 7568 * so we need to offset by 1. 7569 */ 7570 phy_idx = cb->args[0] - 1; 7571 } else { 7572 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7573 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7574 nl80211_policy); 7575 if (err) 7576 goto out_err; 7577 7578 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7579 nl80211_fam.attrbuf); 7580 if (IS_ERR(rdev)) { 7581 err = PTR_ERR(rdev); 7582 goto out_err; 7583 } 7584 phy_idx = rdev->wiphy_idx; 7585 rdev = NULL; 7586 7587 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7588 cb->args[1] = 7589 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7590 } 7591 7592 if (cb->args[1]) { 7593 data = nla_data((void *)cb->args[1]); 7594 data_len = nla_len((void *)cb->args[1]); 7595 } 7596 7597 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7598 if (!rdev) { 7599 err = -ENOENT; 7600 goto out_err; 7601 } 7602 7603 if (!rdev->ops->testmode_dump) { 7604 err = -EOPNOTSUPP; 7605 goto out_err; 7606 } 7607 7608 while (1) { 7609 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7610 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7611 NL80211_CMD_TESTMODE); 7612 struct nlattr *tmdata; 7613 7614 if (!hdr) 7615 break; 7616 7617 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7618 genlmsg_cancel(skb, hdr); 7619 break; 7620 } 7621 7622 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7623 if (!tmdata) { 7624 genlmsg_cancel(skb, hdr); 7625 break; 7626 } 7627 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7628 nla_nest_end(skb, tmdata); 7629 7630 if (err == -ENOBUFS || err == -ENOENT) { 7631 genlmsg_cancel(skb, hdr); 7632 break; 7633 } else if (err) { 7634 genlmsg_cancel(skb, hdr); 7635 goto out_err; 7636 } 7637 7638 genlmsg_end(skb, hdr); 7639 } 7640 7641 err = skb->len; 7642 /* see above */ 7643 cb->args[0] = phy_idx + 1; 7644 out_err: 7645 rtnl_unlock(); 7646 return err; 7647 } 7648 #endif 7649 7650 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7651 { 7652 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7653 struct net_device *dev = info->user_ptr[1]; 7654 struct cfg80211_connect_params connect; 7655 struct wiphy *wiphy; 7656 struct cfg80211_cached_keys *connkeys = NULL; 7657 int err; 7658 7659 memset(&connect, 0, sizeof(connect)); 7660 7661 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7662 return -EINVAL; 7663 7664 if (!info->attrs[NL80211_ATTR_SSID] || 7665 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7666 return -EINVAL; 7667 7668 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7669 connect.auth_type = 7670 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7671 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7672 NL80211_CMD_CONNECT)) 7673 return -EINVAL; 7674 } else 7675 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7676 7677 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7678 7679 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7680 NL80211_MAX_NR_CIPHER_SUITES); 7681 if (err) 7682 return err; 7683 7684 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7685 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7686 return -EOPNOTSUPP; 7687 7688 wiphy = &rdev->wiphy; 7689 7690 connect.bg_scan_period = -1; 7691 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7692 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7693 connect.bg_scan_period = 7694 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7695 } 7696 7697 if (info->attrs[NL80211_ATTR_MAC]) 7698 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7699 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7700 connect.bssid_hint = 7701 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7702 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7703 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7704 7705 if (info->attrs[NL80211_ATTR_IE]) { 7706 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7707 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7708 } 7709 7710 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7711 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7712 if (connect.mfp != NL80211_MFP_REQUIRED && 7713 connect.mfp != NL80211_MFP_NO) 7714 return -EINVAL; 7715 } else { 7716 connect.mfp = NL80211_MFP_NO; 7717 } 7718 7719 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7720 connect.channel = nl80211_get_valid_chan( 7721 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7722 if (!connect.channel) 7723 return -EINVAL; 7724 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7725 connect.channel_hint = nl80211_get_valid_chan( 7726 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7727 if (!connect.channel_hint) 7728 return -EINVAL; 7729 } 7730 7731 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7732 connkeys = nl80211_parse_connkeys(rdev, 7733 info->attrs[NL80211_ATTR_KEYS], NULL); 7734 if (IS_ERR(connkeys)) 7735 return PTR_ERR(connkeys); 7736 } 7737 7738 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7739 connect.flags |= ASSOC_REQ_DISABLE_HT; 7740 7741 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7742 memcpy(&connect.ht_capa_mask, 7743 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7744 sizeof(connect.ht_capa_mask)); 7745 7746 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7747 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7748 kzfree(connkeys); 7749 return -EINVAL; 7750 } 7751 memcpy(&connect.ht_capa, 7752 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7753 sizeof(connect.ht_capa)); 7754 } 7755 7756 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7757 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7758 7759 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7760 memcpy(&connect.vht_capa_mask, 7761 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7762 sizeof(connect.vht_capa_mask)); 7763 7764 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7765 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7766 kzfree(connkeys); 7767 return -EINVAL; 7768 } 7769 memcpy(&connect.vht_capa, 7770 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7771 sizeof(connect.vht_capa)); 7772 } 7773 7774 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7775 if (!(rdev->wiphy.features & 7776 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7777 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7778 return -EINVAL; 7779 connect.flags |= ASSOC_REQ_USE_RRM; 7780 } 7781 7782 wdev_lock(dev->ieee80211_ptr); 7783 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7784 wdev_unlock(dev->ieee80211_ptr); 7785 if (err) 7786 kzfree(connkeys); 7787 return err; 7788 } 7789 7790 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7791 { 7792 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7793 struct net_device *dev = info->user_ptr[1]; 7794 u16 reason; 7795 int ret; 7796 7797 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7798 reason = WLAN_REASON_DEAUTH_LEAVING; 7799 else 7800 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7801 7802 if (reason == 0) 7803 return -EINVAL; 7804 7805 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7806 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7807 return -EOPNOTSUPP; 7808 7809 wdev_lock(dev->ieee80211_ptr); 7810 ret = cfg80211_disconnect(rdev, dev, reason, true); 7811 wdev_unlock(dev->ieee80211_ptr); 7812 return ret; 7813 } 7814 7815 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7816 { 7817 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7818 struct net *net; 7819 int err; 7820 7821 if (info->attrs[NL80211_ATTR_PID]) { 7822 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7823 7824 net = get_net_ns_by_pid(pid); 7825 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 7826 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 7827 7828 net = get_net_ns_by_fd(fd); 7829 } else { 7830 return -EINVAL; 7831 } 7832 7833 if (IS_ERR(net)) 7834 return PTR_ERR(net); 7835 7836 err = 0; 7837 7838 /* check if anything to do */ 7839 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7840 err = cfg80211_switch_netns(rdev, net); 7841 7842 put_net(net); 7843 return err; 7844 } 7845 7846 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7847 { 7848 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7849 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7850 struct cfg80211_pmksa *pmksa) = NULL; 7851 struct net_device *dev = info->user_ptr[1]; 7852 struct cfg80211_pmksa pmksa; 7853 7854 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7855 7856 if (!info->attrs[NL80211_ATTR_MAC]) 7857 return -EINVAL; 7858 7859 if (!info->attrs[NL80211_ATTR_PMKID]) 7860 return -EINVAL; 7861 7862 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7863 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7864 7865 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7866 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7867 return -EOPNOTSUPP; 7868 7869 switch (info->genlhdr->cmd) { 7870 case NL80211_CMD_SET_PMKSA: 7871 rdev_ops = rdev->ops->set_pmksa; 7872 break; 7873 case NL80211_CMD_DEL_PMKSA: 7874 rdev_ops = rdev->ops->del_pmksa; 7875 break; 7876 default: 7877 WARN_ON(1); 7878 break; 7879 } 7880 7881 if (!rdev_ops) 7882 return -EOPNOTSUPP; 7883 7884 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7885 } 7886 7887 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7888 { 7889 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7890 struct net_device *dev = info->user_ptr[1]; 7891 7892 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7893 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7894 return -EOPNOTSUPP; 7895 7896 if (!rdev->ops->flush_pmksa) 7897 return -EOPNOTSUPP; 7898 7899 return rdev_flush_pmksa(rdev, dev); 7900 } 7901 7902 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7903 { 7904 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7905 struct net_device *dev = info->user_ptr[1]; 7906 u8 action_code, dialog_token; 7907 u32 peer_capability = 0; 7908 u16 status_code; 7909 u8 *peer; 7910 bool initiator; 7911 7912 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7913 !rdev->ops->tdls_mgmt) 7914 return -EOPNOTSUPP; 7915 7916 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7917 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7918 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7919 !info->attrs[NL80211_ATTR_IE] || 7920 !info->attrs[NL80211_ATTR_MAC]) 7921 return -EINVAL; 7922 7923 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7924 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7925 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7926 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7927 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 7928 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 7929 peer_capability = 7930 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 7931 7932 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7933 dialog_token, status_code, peer_capability, 7934 initiator, 7935 nla_data(info->attrs[NL80211_ATTR_IE]), 7936 nla_len(info->attrs[NL80211_ATTR_IE])); 7937 } 7938 7939 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7940 { 7941 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7942 struct net_device *dev = info->user_ptr[1]; 7943 enum nl80211_tdls_operation operation; 7944 u8 *peer; 7945 7946 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7947 !rdev->ops->tdls_oper) 7948 return -EOPNOTSUPP; 7949 7950 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7951 !info->attrs[NL80211_ATTR_MAC]) 7952 return -EINVAL; 7953 7954 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7955 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7956 7957 return rdev_tdls_oper(rdev, dev, peer, operation); 7958 } 7959 7960 static int nl80211_remain_on_channel(struct sk_buff *skb, 7961 struct genl_info *info) 7962 { 7963 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7964 struct wireless_dev *wdev = info->user_ptr[1]; 7965 struct cfg80211_chan_def chandef; 7966 struct sk_buff *msg; 7967 void *hdr; 7968 u64 cookie; 7969 u32 duration; 7970 int err; 7971 7972 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7973 !info->attrs[NL80211_ATTR_DURATION]) 7974 return -EINVAL; 7975 7976 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7977 7978 if (!rdev->ops->remain_on_channel || 7979 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7980 return -EOPNOTSUPP; 7981 7982 /* 7983 * We should be on that channel for at least a minimum amount of 7984 * time (10ms) but no longer than the driver supports. 7985 */ 7986 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7987 duration > rdev->wiphy.max_remain_on_channel_duration) 7988 return -EINVAL; 7989 7990 err = nl80211_parse_chandef(rdev, info, &chandef); 7991 if (err) 7992 return err; 7993 7994 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7995 if (!msg) 7996 return -ENOMEM; 7997 7998 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7999 NL80211_CMD_REMAIN_ON_CHANNEL); 8000 if (!hdr) { 8001 err = -ENOBUFS; 8002 goto free_msg; 8003 } 8004 8005 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 8006 duration, &cookie); 8007 8008 if (err) 8009 goto free_msg; 8010 8011 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8012 goto nla_put_failure; 8013 8014 genlmsg_end(msg, hdr); 8015 8016 return genlmsg_reply(msg, info); 8017 8018 nla_put_failure: 8019 err = -ENOBUFS; 8020 free_msg: 8021 nlmsg_free(msg); 8022 return err; 8023 } 8024 8025 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 8026 struct genl_info *info) 8027 { 8028 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8029 struct wireless_dev *wdev = info->user_ptr[1]; 8030 u64 cookie; 8031 8032 if (!info->attrs[NL80211_ATTR_COOKIE]) 8033 return -EINVAL; 8034 8035 if (!rdev->ops->cancel_remain_on_channel) 8036 return -EOPNOTSUPP; 8037 8038 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8039 8040 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8041 } 8042 8043 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8044 u8 *rates, u8 rates_len) 8045 { 8046 u8 i; 8047 u32 mask = 0; 8048 8049 for (i = 0; i < rates_len; i++) { 8050 int rate = (rates[i] & 0x7f) * 5; 8051 int ridx; 8052 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8053 struct ieee80211_rate *srate = 8054 &sband->bitrates[ridx]; 8055 if (rate == srate->bitrate) { 8056 mask |= 1 << ridx; 8057 break; 8058 } 8059 } 8060 if (ridx == sband->n_bitrates) 8061 return 0; /* rate not found */ 8062 } 8063 8064 return mask; 8065 } 8066 8067 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8068 u8 *rates, u8 rates_len, 8069 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8070 { 8071 u8 i; 8072 8073 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8074 8075 for (i = 0; i < rates_len; i++) { 8076 int ridx, rbit; 8077 8078 ridx = rates[i] / 8; 8079 rbit = BIT(rates[i] % 8); 8080 8081 /* check validity */ 8082 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8083 return false; 8084 8085 /* check availability */ 8086 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8087 mcs[ridx] |= rbit; 8088 else 8089 return false; 8090 } 8091 8092 return true; 8093 } 8094 8095 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8096 { 8097 u16 mcs_mask = 0; 8098 8099 switch (vht_mcs_map) { 8100 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8101 break; 8102 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8103 mcs_mask = 0x00FF; 8104 break; 8105 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8106 mcs_mask = 0x01FF; 8107 break; 8108 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8109 mcs_mask = 0x03FF; 8110 break; 8111 default: 8112 break; 8113 } 8114 8115 return mcs_mask; 8116 } 8117 8118 static void vht_build_mcs_mask(u16 vht_mcs_map, 8119 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8120 { 8121 u8 nss; 8122 8123 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8124 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8125 vht_mcs_map >>= 2; 8126 } 8127 } 8128 8129 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8130 struct nl80211_txrate_vht *txrate, 8131 u16 mcs[NL80211_VHT_NSS_MAX]) 8132 { 8133 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8134 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8135 u8 i; 8136 8137 if (!sband->vht_cap.vht_supported) 8138 return false; 8139 8140 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8141 8142 /* Build vht_mcs_mask from VHT capabilities */ 8143 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8144 8145 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8146 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8147 mcs[i] = txrate->mcs[i]; 8148 else 8149 return false; 8150 } 8151 8152 return true; 8153 } 8154 8155 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8156 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8157 .len = NL80211_MAX_SUPP_RATES }, 8158 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8159 .len = NL80211_MAX_SUPP_HT_RATES }, 8160 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8161 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8162 }; 8163 8164 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8165 struct genl_info *info) 8166 { 8167 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8168 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8169 struct cfg80211_bitrate_mask mask; 8170 int rem, i; 8171 struct net_device *dev = info->user_ptr[1]; 8172 struct nlattr *tx_rates; 8173 struct ieee80211_supported_band *sband; 8174 u16 vht_tx_mcs_map; 8175 8176 if (!rdev->ops->set_bitrate_mask) 8177 return -EOPNOTSUPP; 8178 8179 memset(&mask, 0, sizeof(mask)); 8180 /* Default to all rates enabled */ 8181 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 8182 sband = rdev->wiphy.bands[i]; 8183 8184 if (!sband) 8185 continue; 8186 8187 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8188 memcpy(mask.control[i].ht_mcs, 8189 sband->ht_cap.mcs.rx_mask, 8190 sizeof(mask.control[i].ht_mcs)); 8191 8192 if (!sband->vht_cap.vht_supported) 8193 continue; 8194 8195 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8196 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8197 } 8198 8199 /* if no rates are given set it back to the defaults */ 8200 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8201 goto out; 8202 8203 /* 8204 * The nested attribute uses enum nl80211_band as the index. This maps 8205 * directly to the enum ieee80211_band values used in cfg80211. 8206 */ 8207 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8208 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8209 enum ieee80211_band band = nla_type(tx_rates); 8210 int err; 8211 8212 if (band < 0 || band >= IEEE80211_NUM_BANDS) 8213 return -EINVAL; 8214 sband = rdev->wiphy.bands[band]; 8215 if (sband == NULL) 8216 return -EINVAL; 8217 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8218 nla_len(tx_rates), nl80211_txattr_policy); 8219 if (err) 8220 return err; 8221 if (tb[NL80211_TXRATE_LEGACY]) { 8222 mask.control[band].legacy = rateset_to_mask( 8223 sband, 8224 nla_data(tb[NL80211_TXRATE_LEGACY]), 8225 nla_len(tb[NL80211_TXRATE_LEGACY])); 8226 if ((mask.control[band].legacy == 0) && 8227 nla_len(tb[NL80211_TXRATE_LEGACY])) 8228 return -EINVAL; 8229 } 8230 if (tb[NL80211_TXRATE_HT]) { 8231 if (!ht_rateset_to_mask( 8232 sband, 8233 nla_data(tb[NL80211_TXRATE_HT]), 8234 nla_len(tb[NL80211_TXRATE_HT]), 8235 mask.control[band].ht_mcs)) 8236 return -EINVAL; 8237 } 8238 if (tb[NL80211_TXRATE_VHT]) { 8239 if (!vht_set_mcs_mask( 8240 sband, 8241 nla_data(tb[NL80211_TXRATE_VHT]), 8242 mask.control[band].vht_mcs)) 8243 return -EINVAL; 8244 } 8245 if (tb[NL80211_TXRATE_GI]) { 8246 mask.control[band].gi = 8247 nla_get_u8(tb[NL80211_TXRATE_GI]); 8248 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8249 return -EINVAL; 8250 } 8251 8252 if (mask.control[band].legacy == 0) { 8253 /* don't allow empty legacy rates if HT or VHT 8254 * are not even supported. 8255 */ 8256 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8257 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8258 return -EINVAL; 8259 8260 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8261 if (mask.control[band].ht_mcs[i]) 8262 goto out; 8263 8264 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8265 if (mask.control[band].vht_mcs[i]) 8266 goto out; 8267 8268 /* legacy and mcs rates may not be both empty */ 8269 return -EINVAL; 8270 } 8271 } 8272 8273 out: 8274 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8275 } 8276 8277 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8278 { 8279 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8280 struct wireless_dev *wdev = info->user_ptr[1]; 8281 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8282 8283 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8284 return -EINVAL; 8285 8286 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8287 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8288 8289 switch (wdev->iftype) { 8290 case NL80211_IFTYPE_STATION: 8291 case NL80211_IFTYPE_ADHOC: 8292 case NL80211_IFTYPE_P2P_CLIENT: 8293 case NL80211_IFTYPE_AP: 8294 case NL80211_IFTYPE_AP_VLAN: 8295 case NL80211_IFTYPE_MESH_POINT: 8296 case NL80211_IFTYPE_P2P_GO: 8297 case NL80211_IFTYPE_P2P_DEVICE: 8298 break; 8299 default: 8300 return -EOPNOTSUPP; 8301 } 8302 8303 /* not much point in registering if we can't reply */ 8304 if (!rdev->ops->mgmt_tx) 8305 return -EOPNOTSUPP; 8306 8307 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8308 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8309 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8310 } 8311 8312 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8313 { 8314 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8315 struct wireless_dev *wdev = info->user_ptr[1]; 8316 struct cfg80211_chan_def chandef; 8317 int err; 8318 void *hdr = NULL; 8319 u64 cookie; 8320 struct sk_buff *msg = NULL; 8321 struct cfg80211_mgmt_tx_params params = { 8322 .dont_wait_for_ack = 8323 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8324 }; 8325 8326 if (!info->attrs[NL80211_ATTR_FRAME]) 8327 return -EINVAL; 8328 8329 if (!rdev->ops->mgmt_tx) 8330 return -EOPNOTSUPP; 8331 8332 switch (wdev->iftype) { 8333 case NL80211_IFTYPE_P2P_DEVICE: 8334 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8335 return -EINVAL; 8336 case NL80211_IFTYPE_STATION: 8337 case NL80211_IFTYPE_ADHOC: 8338 case NL80211_IFTYPE_P2P_CLIENT: 8339 case NL80211_IFTYPE_AP: 8340 case NL80211_IFTYPE_AP_VLAN: 8341 case NL80211_IFTYPE_MESH_POINT: 8342 case NL80211_IFTYPE_P2P_GO: 8343 break; 8344 default: 8345 return -EOPNOTSUPP; 8346 } 8347 8348 if (info->attrs[NL80211_ATTR_DURATION]) { 8349 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8350 return -EINVAL; 8351 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8352 8353 /* 8354 * We should wait on the channel for at least a minimum amount 8355 * of time (10ms) but no longer than the driver supports. 8356 */ 8357 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8358 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8359 return -EINVAL; 8360 8361 } 8362 8363 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8364 8365 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8366 return -EINVAL; 8367 8368 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8369 8370 /* get the channel if any has been specified, otherwise pass NULL to 8371 * the driver. The latter will use the current one 8372 */ 8373 chandef.chan = NULL; 8374 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8375 err = nl80211_parse_chandef(rdev, info, &chandef); 8376 if (err) 8377 return err; 8378 } 8379 8380 if (!chandef.chan && params.offchan) 8381 return -EINVAL; 8382 8383 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8384 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8385 8386 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8387 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8388 int i; 8389 8390 if (len % sizeof(u16)) 8391 return -EINVAL; 8392 8393 params.n_csa_offsets = len / sizeof(u16); 8394 params.csa_offsets = 8395 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8396 8397 /* check that all the offsets fit the frame */ 8398 for (i = 0; i < params.n_csa_offsets; i++) { 8399 if (params.csa_offsets[i] >= params.len) 8400 return -EINVAL; 8401 } 8402 } 8403 8404 if (!params.dont_wait_for_ack) { 8405 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8406 if (!msg) 8407 return -ENOMEM; 8408 8409 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8410 NL80211_CMD_FRAME); 8411 if (!hdr) { 8412 err = -ENOBUFS; 8413 goto free_msg; 8414 } 8415 } 8416 8417 params.chan = chandef.chan; 8418 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8419 if (err) 8420 goto free_msg; 8421 8422 if (msg) { 8423 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8424 goto nla_put_failure; 8425 8426 genlmsg_end(msg, hdr); 8427 return genlmsg_reply(msg, info); 8428 } 8429 8430 return 0; 8431 8432 nla_put_failure: 8433 err = -ENOBUFS; 8434 free_msg: 8435 nlmsg_free(msg); 8436 return err; 8437 } 8438 8439 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8440 { 8441 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8442 struct wireless_dev *wdev = info->user_ptr[1]; 8443 u64 cookie; 8444 8445 if (!info->attrs[NL80211_ATTR_COOKIE]) 8446 return -EINVAL; 8447 8448 if (!rdev->ops->mgmt_tx_cancel_wait) 8449 return -EOPNOTSUPP; 8450 8451 switch (wdev->iftype) { 8452 case NL80211_IFTYPE_STATION: 8453 case NL80211_IFTYPE_ADHOC: 8454 case NL80211_IFTYPE_P2P_CLIENT: 8455 case NL80211_IFTYPE_AP: 8456 case NL80211_IFTYPE_AP_VLAN: 8457 case NL80211_IFTYPE_P2P_GO: 8458 case NL80211_IFTYPE_P2P_DEVICE: 8459 break; 8460 default: 8461 return -EOPNOTSUPP; 8462 } 8463 8464 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8465 8466 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8467 } 8468 8469 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8470 { 8471 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8472 struct wireless_dev *wdev; 8473 struct net_device *dev = info->user_ptr[1]; 8474 u8 ps_state; 8475 bool state; 8476 int err; 8477 8478 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8479 return -EINVAL; 8480 8481 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8482 8483 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8484 return -EINVAL; 8485 8486 wdev = dev->ieee80211_ptr; 8487 8488 if (!rdev->ops->set_power_mgmt) 8489 return -EOPNOTSUPP; 8490 8491 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8492 8493 if (state == wdev->ps) 8494 return 0; 8495 8496 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8497 if (!err) 8498 wdev->ps = state; 8499 return err; 8500 } 8501 8502 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8503 { 8504 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8505 enum nl80211_ps_state ps_state; 8506 struct wireless_dev *wdev; 8507 struct net_device *dev = info->user_ptr[1]; 8508 struct sk_buff *msg; 8509 void *hdr; 8510 int err; 8511 8512 wdev = dev->ieee80211_ptr; 8513 8514 if (!rdev->ops->set_power_mgmt) 8515 return -EOPNOTSUPP; 8516 8517 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8518 if (!msg) 8519 return -ENOMEM; 8520 8521 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8522 NL80211_CMD_GET_POWER_SAVE); 8523 if (!hdr) { 8524 err = -ENOBUFS; 8525 goto free_msg; 8526 } 8527 8528 if (wdev->ps) 8529 ps_state = NL80211_PS_ENABLED; 8530 else 8531 ps_state = NL80211_PS_DISABLED; 8532 8533 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8534 goto nla_put_failure; 8535 8536 genlmsg_end(msg, hdr); 8537 return genlmsg_reply(msg, info); 8538 8539 nla_put_failure: 8540 err = -ENOBUFS; 8541 free_msg: 8542 nlmsg_free(msg); 8543 return err; 8544 } 8545 8546 static const struct nla_policy 8547 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8548 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8549 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8550 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8551 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8552 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8553 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8554 }; 8555 8556 static int nl80211_set_cqm_txe(struct genl_info *info, 8557 u32 rate, u32 pkts, u32 intvl) 8558 { 8559 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8560 struct net_device *dev = info->user_ptr[1]; 8561 struct wireless_dev *wdev = dev->ieee80211_ptr; 8562 8563 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8564 return -EINVAL; 8565 8566 if (!rdev->ops->set_cqm_txe_config) 8567 return -EOPNOTSUPP; 8568 8569 if (wdev->iftype != NL80211_IFTYPE_STATION && 8570 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8571 return -EOPNOTSUPP; 8572 8573 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8574 } 8575 8576 static int nl80211_set_cqm_rssi(struct genl_info *info, 8577 s32 threshold, u32 hysteresis) 8578 { 8579 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8580 struct net_device *dev = info->user_ptr[1]; 8581 struct wireless_dev *wdev = dev->ieee80211_ptr; 8582 8583 if (threshold > 0) 8584 return -EINVAL; 8585 8586 /* disabling - hysteresis should also be zero then */ 8587 if (threshold == 0) 8588 hysteresis = 0; 8589 8590 if (!rdev->ops->set_cqm_rssi_config) 8591 return -EOPNOTSUPP; 8592 8593 if (wdev->iftype != NL80211_IFTYPE_STATION && 8594 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8595 return -EOPNOTSUPP; 8596 8597 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8598 } 8599 8600 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8601 { 8602 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8603 struct nlattr *cqm; 8604 int err; 8605 8606 cqm = info->attrs[NL80211_ATTR_CQM]; 8607 if (!cqm) 8608 return -EINVAL; 8609 8610 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8611 nl80211_attr_cqm_policy); 8612 if (err) 8613 return err; 8614 8615 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8616 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8617 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8618 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8619 8620 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8621 } 8622 8623 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8624 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8625 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8626 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8627 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8628 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8629 8630 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8631 } 8632 8633 return -EINVAL; 8634 } 8635 8636 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8637 { 8638 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8639 struct net_device *dev = info->user_ptr[1]; 8640 struct ocb_setup setup = {}; 8641 int err; 8642 8643 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8644 if (err) 8645 return err; 8646 8647 return cfg80211_join_ocb(rdev, dev, &setup); 8648 } 8649 8650 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8651 { 8652 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8653 struct net_device *dev = info->user_ptr[1]; 8654 8655 return cfg80211_leave_ocb(rdev, dev); 8656 } 8657 8658 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8659 { 8660 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8661 struct net_device *dev = info->user_ptr[1]; 8662 struct mesh_config cfg; 8663 struct mesh_setup setup; 8664 int err; 8665 8666 /* start with default */ 8667 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8668 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8669 8670 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8671 /* and parse parameters if given */ 8672 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8673 if (err) 8674 return err; 8675 } 8676 8677 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8678 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8679 return -EINVAL; 8680 8681 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8682 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8683 8684 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8685 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8686 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8687 return -EINVAL; 8688 8689 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8690 setup.beacon_interval = 8691 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8692 if (setup.beacon_interval < 10 || 8693 setup.beacon_interval > 10000) 8694 return -EINVAL; 8695 } 8696 8697 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8698 setup.dtim_period = 8699 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8700 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8701 return -EINVAL; 8702 } 8703 8704 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8705 /* parse additional setup parameters if given */ 8706 err = nl80211_parse_mesh_setup(info, &setup); 8707 if (err) 8708 return err; 8709 } 8710 8711 if (setup.user_mpm) 8712 cfg.auto_open_plinks = false; 8713 8714 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8715 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8716 if (err) 8717 return err; 8718 } else { 8719 /* cfg80211_join_mesh() will sort it out */ 8720 setup.chandef.chan = NULL; 8721 } 8722 8723 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8724 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8725 int n_rates = 8726 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8727 struct ieee80211_supported_band *sband; 8728 8729 if (!setup.chandef.chan) 8730 return -EINVAL; 8731 8732 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8733 8734 err = ieee80211_get_ratemask(sband, rates, n_rates, 8735 &setup.basic_rates); 8736 if (err) 8737 return err; 8738 } 8739 8740 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8741 } 8742 8743 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8744 { 8745 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8746 struct net_device *dev = info->user_ptr[1]; 8747 8748 return cfg80211_leave_mesh(rdev, dev); 8749 } 8750 8751 #ifdef CONFIG_PM 8752 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8753 struct cfg80211_registered_device *rdev) 8754 { 8755 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8756 struct nlattr *nl_pats, *nl_pat; 8757 int i, pat_len; 8758 8759 if (!wowlan->n_patterns) 8760 return 0; 8761 8762 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8763 if (!nl_pats) 8764 return -ENOBUFS; 8765 8766 for (i = 0; i < wowlan->n_patterns; i++) { 8767 nl_pat = nla_nest_start(msg, i + 1); 8768 if (!nl_pat) 8769 return -ENOBUFS; 8770 pat_len = wowlan->patterns[i].pattern_len; 8771 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8772 wowlan->patterns[i].mask) || 8773 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8774 wowlan->patterns[i].pattern) || 8775 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8776 wowlan->patterns[i].pkt_offset)) 8777 return -ENOBUFS; 8778 nla_nest_end(msg, nl_pat); 8779 } 8780 nla_nest_end(msg, nl_pats); 8781 8782 return 0; 8783 } 8784 8785 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 8786 struct cfg80211_wowlan_tcp *tcp) 8787 { 8788 struct nlattr *nl_tcp; 8789 8790 if (!tcp) 8791 return 0; 8792 8793 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8794 if (!nl_tcp) 8795 return -ENOBUFS; 8796 8797 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8798 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8799 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8800 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8801 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8802 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8803 tcp->payload_len, tcp->payload) || 8804 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8805 tcp->data_interval) || 8806 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8807 tcp->wake_len, tcp->wake_data) || 8808 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8809 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8810 return -ENOBUFS; 8811 8812 if (tcp->payload_seq.len && 8813 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8814 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8815 return -ENOBUFS; 8816 8817 if (tcp->payload_tok.len && 8818 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8819 sizeof(tcp->payload_tok) + tcp->tokens_size, 8820 &tcp->payload_tok)) 8821 return -ENOBUFS; 8822 8823 nla_nest_end(msg, nl_tcp); 8824 8825 return 0; 8826 } 8827 8828 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 8829 struct cfg80211_sched_scan_request *req) 8830 { 8831 struct nlattr *nd, *freqs, *matches, *match; 8832 int i; 8833 8834 if (!req) 8835 return 0; 8836 8837 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 8838 if (!nd) 8839 return -ENOBUFS; 8840 8841 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval)) 8842 return -ENOBUFS; 8843 8844 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 8845 return -ENOBUFS; 8846 8847 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 8848 if (!freqs) 8849 return -ENOBUFS; 8850 8851 for (i = 0; i < req->n_channels; i++) 8852 nla_put_u32(msg, i, req->channels[i]->center_freq); 8853 8854 nla_nest_end(msg, freqs); 8855 8856 if (req->n_match_sets) { 8857 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 8858 for (i = 0; i < req->n_match_sets; i++) { 8859 match = nla_nest_start(msg, i); 8860 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 8861 req->match_sets[i].ssid.ssid_len, 8862 req->match_sets[i].ssid.ssid); 8863 nla_nest_end(msg, match); 8864 } 8865 nla_nest_end(msg, matches); 8866 } 8867 8868 nla_nest_end(msg, nd); 8869 8870 return 0; 8871 } 8872 8873 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8874 { 8875 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8876 struct sk_buff *msg; 8877 void *hdr; 8878 u32 size = NLMSG_DEFAULT_SIZE; 8879 8880 if (!rdev->wiphy.wowlan) 8881 return -EOPNOTSUPP; 8882 8883 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8884 /* adjust size to have room for all the data */ 8885 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8886 rdev->wiphy.wowlan_config->tcp->payload_len + 8887 rdev->wiphy.wowlan_config->tcp->wake_len + 8888 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8889 } 8890 8891 msg = nlmsg_new(size, GFP_KERNEL); 8892 if (!msg) 8893 return -ENOMEM; 8894 8895 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8896 NL80211_CMD_GET_WOWLAN); 8897 if (!hdr) 8898 goto nla_put_failure; 8899 8900 if (rdev->wiphy.wowlan_config) { 8901 struct nlattr *nl_wowlan; 8902 8903 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8904 if (!nl_wowlan) 8905 goto nla_put_failure; 8906 8907 if ((rdev->wiphy.wowlan_config->any && 8908 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8909 (rdev->wiphy.wowlan_config->disconnect && 8910 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8911 (rdev->wiphy.wowlan_config->magic_pkt && 8912 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8913 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8914 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8915 (rdev->wiphy.wowlan_config->eap_identity_req && 8916 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8917 (rdev->wiphy.wowlan_config->four_way_handshake && 8918 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8919 (rdev->wiphy.wowlan_config->rfkill_release && 8920 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8921 goto nla_put_failure; 8922 8923 if (nl80211_send_wowlan_patterns(msg, rdev)) 8924 goto nla_put_failure; 8925 8926 if (nl80211_send_wowlan_tcp(msg, 8927 rdev->wiphy.wowlan_config->tcp)) 8928 goto nla_put_failure; 8929 8930 if (nl80211_send_wowlan_nd( 8931 msg, 8932 rdev->wiphy.wowlan_config->nd_config)) 8933 goto nla_put_failure; 8934 8935 nla_nest_end(msg, nl_wowlan); 8936 } 8937 8938 genlmsg_end(msg, hdr); 8939 return genlmsg_reply(msg, info); 8940 8941 nla_put_failure: 8942 nlmsg_free(msg); 8943 return -ENOBUFS; 8944 } 8945 8946 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8947 struct nlattr *attr, 8948 struct cfg80211_wowlan *trig) 8949 { 8950 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8951 struct cfg80211_wowlan_tcp *cfg; 8952 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8953 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8954 u32 size; 8955 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8956 int err, port; 8957 8958 if (!rdev->wiphy.wowlan->tcp) 8959 return -EINVAL; 8960 8961 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8962 nla_data(attr), nla_len(attr), 8963 nl80211_wowlan_tcp_policy); 8964 if (err) 8965 return err; 8966 8967 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8968 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8969 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8970 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8971 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8972 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8973 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8974 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8975 return -EINVAL; 8976 8977 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8978 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8979 return -EINVAL; 8980 8981 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8982 rdev->wiphy.wowlan->tcp->data_interval_max || 8983 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8984 return -EINVAL; 8985 8986 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8987 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8988 return -EINVAL; 8989 8990 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8991 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8992 return -EINVAL; 8993 8994 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8995 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8996 8997 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8998 tokens_size = tokln - sizeof(*tok); 8999 9000 if (!tok->len || tokens_size % tok->len) 9001 return -EINVAL; 9002 if (!rdev->wiphy.wowlan->tcp->tok) 9003 return -EINVAL; 9004 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 9005 return -EINVAL; 9006 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 9007 return -EINVAL; 9008 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 9009 return -EINVAL; 9010 if (tok->offset + tok->len > data_size) 9011 return -EINVAL; 9012 } 9013 9014 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 9015 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 9016 if (!rdev->wiphy.wowlan->tcp->seq) 9017 return -EINVAL; 9018 if (seq->len == 0 || seq->len > 4) 9019 return -EINVAL; 9020 if (seq->len + seq->offset > data_size) 9021 return -EINVAL; 9022 } 9023 9024 size = sizeof(*cfg); 9025 size += data_size; 9026 size += wake_size + wake_mask_size; 9027 size += tokens_size; 9028 9029 cfg = kzalloc(size, GFP_KERNEL); 9030 if (!cfg) 9031 return -ENOMEM; 9032 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 9033 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 9034 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 9035 ETH_ALEN); 9036 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9037 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9038 else 9039 port = 0; 9040 #ifdef CONFIG_INET 9041 /* allocate a socket and port for it and use it */ 9042 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9043 IPPROTO_TCP, &cfg->sock, 1); 9044 if (err) { 9045 kfree(cfg); 9046 return err; 9047 } 9048 if (inet_csk_get_port(cfg->sock->sk, port)) { 9049 sock_release(cfg->sock); 9050 kfree(cfg); 9051 return -EADDRINUSE; 9052 } 9053 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9054 #else 9055 if (!port) { 9056 kfree(cfg); 9057 return -EINVAL; 9058 } 9059 cfg->src_port = port; 9060 #endif 9061 9062 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9063 cfg->payload_len = data_size; 9064 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9065 memcpy((void *)cfg->payload, 9066 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9067 data_size); 9068 if (seq) 9069 cfg->payload_seq = *seq; 9070 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9071 cfg->wake_len = wake_size; 9072 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9073 memcpy((void *)cfg->wake_data, 9074 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9075 wake_size); 9076 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9077 data_size + wake_size; 9078 memcpy((void *)cfg->wake_mask, 9079 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9080 wake_mask_size); 9081 if (tok) { 9082 cfg->tokens_size = tokens_size; 9083 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9084 } 9085 9086 trig->tcp = cfg; 9087 9088 return 0; 9089 } 9090 9091 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9092 const struct wiphy_wowlan_support *wowlan, 9093 struct nlattr *attr, 9094 struct cfg80211_wowlan *trig) 9095 { 9096 struct nlattr **tb; 9097 int err; 9098 9099 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9100 if (!tb) 9101 return -ENOMEM; 9102 9103 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9104 err = -EOPNOTSUPP; 9105 goto out; 9106 } 9107 9108 err = nla_parse(tb, NL80211_ATTR_MAX, 9109 nla_data(attr), nla_len(attr), 9110 nl80211_policy); 9111 if (err) 9112 goto out; 9113 9114 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9115 err = PTR_ERR_OR_ZERO(trig->nd_config); 9116 if (err) 9117 trig->nd_config = NULL; 9118 9119 out: 9120 kfree(tb); 9121 return err; 9122 } 9123 9124 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9125 { 9126 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9127 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9128 struct cfg80211_wowlan new_triggers = {}; 9129 struct cfg80211_wowlan *ntrig; 9130 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9131 int err, i; 9132 bool prev_enabled = rdev->wiphy.wowlan_config; 9133 bool regular = false; 9134 9135 if (!wowlan) 9136 return -EOPNOTSUPP; 9137 9138 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9139 cfg80211_rdev_free_wowlan(rdev); 9140 rdev->wiphy.wowlan_config = NULL; 9141 goto set_wakeup; 9142 } 9143 9144 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9145 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9146 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9147 nl80211_wowlan_policy); 9148 if (err) 9149 return err; 9150 9151 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9152 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9153 return -EINVAL; 9154 new_triggers.any = true; 9155 } 9156 9157 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9158 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9159 return -EINVAL; 9160 new_triggers.disconnect = true; 9161 regular = true; 9162 } 9163 9164 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9165 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9166 return -EINVAL; 9167 new_triggers.magic_pkt = true; 9168 regular = true; 9169 } 9170 9171 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9172 return -EINVAL; 9173 9174 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9175 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9176 return -EINVAL; 9177 new_triggers.gtk_rekey_failure = true; 9178 regular = true; 9179 } 9180 9181 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9182 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9183 return -EINVAL; 9184 new_triggers.eap_identity_req = true; 9185 regular = true; 9186 } 9187 9188 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9189 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9190 return -EINVAL; 9191 new_triggers.four_way_handshake = true; 9192 regular = true; 9193 } 9194 9195 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9196 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9197 return -EINVAL; 9198 new_triggers.rfkill_release = true; 9199 regular = true; 9200 } 9201 9202 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9203 struct nlattr *pat; 9204 int n_patterns = 0; 9205 int rem, pat_len, mask_len, pkt_offset; 9206 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9207 9208 regular = true; 9209 9210 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9211 rem) 9212 n_patterns++; 9213 if (n_patterns > wowlan->n_patterns) 9214 return -EINVAL; 9215 9216 new_triggers.patterns = kcalloc(n_patterns, 9217 sizeof(new_triggers.patterns[0]), 9218 GFP_KERNEL); 9219 if (!new_triggers.patterns) 9220 return -ENOMEM; 9221 9222 new_triggers.n_patterns = n_patterns; 9223 i = 0; 9224 9225 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9226 rem) { 9227 u8 *mask_pat; 9228 9229 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9230 nla_len(pat), NULL); 9231 err = -EINVAL; 9232 if (!pat_tb[NL80211_PKTPAT_MASK] || 9233 !pat_tb[NL80211_PKTPAT_PATTERN]) 9234 goto error; 9235 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9236 mask_len = DIV_ROUND_UP(pat_len, 8); 9237 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9238 goto error; 9239 if (pat_len > wowlan->pattern_max_len || 9240 pat_len < wowlan->pattern_min_len) 9241 goto error; 9242 9243 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9244 pkt_offset = 0; 9245 else 9246 pkt_offset = nla_get_u32( 9247 pat_tb[NL80211_PKTPAT_OFFSET]); 9248 if (pkt_offset > wowlan->max_pkt_offset) 9249 goto error; 9250 new_triggers.patterns[i].pkt_offset = pkt_offset; 9251 9252 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9253 if (!mask_pat) { 9254 err = -ENOMEM; 9255 goto error; 9256 } 9257 new_triggers.patterns[i].mask = mask_pat; 9258 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9259 mask_len); 9260 mask_pat += mask_len; 9261 new_triggers.patterns[i].pattern = mask_pat; 9262 new_triggers.patterns[i].pattern_len = pat_len; 9263 memcpy(mask_pat, 9264 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9265 pat_len); 9266 i++; 9267 } 9268 } 9269 9270 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9271 regular = true; 9272 err = nl80211_parse_wowlan_tcp( 9273 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9274 &new_triggers); 9275 if (err) 9276 goto error; 9277 } 9278 9279 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9280 regular = true; 9281 err = nl80211_parse_wowlan_nd( 9282 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9283 &new_triggers); 9284 if (err) 9285 goto error; 9286 } 9287 9288 /* The 'any' trigger means the device continues operating more or less 9289 * as in its normal operation mode and wakes up the host on most of the 9290 * normal interrupts (like packet RX, ...) 9291 * It therefore makes little sense to combine with the more constrained 9292 * wakeup trigger modes. 9293 */ 9294 if (new_triggers.any && regular) { 9295 err = -EINVAL; 9296 goto error; 9297 } 9298 9299 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9300 if (!ntrig) { 9301 err = -ENOMEM; 9302 goto error; 9303 } 9304 cfg80211_rdev_free_wowlan(rdev); 9305 rdev->wiphy.wowlan_config = ntrig; 9306 9307 set_wakeup: 9308 if (rdev->ops->set_wakeup && 9309 prev_enabled != !!rdev->wiphy.wowlan_config) 9310 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9311 9312 return 0; 9313 error: 9314 for (i = 0; i < new_triggers.n_patterns; i++) 9315 kfree(new_triggers.patterns[i].mask); 9316 kfree(new_triggers.patterns); 9317 if (new_triggers.tcp && new_triggers.tcp->sock) 9318 sock_release(new_triggers.tcp->sock); 9319 kfree(new_triggers.tcp); 9320 return err; 9321 } 9322 #endif 9323 9324 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9325 struct cfg80211_registered_device *rdev) 9326 { 9327 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9328 int i, j, pat_len; 9329 struct cfg80211_coalesce_rules *rule; 9330 9331 if (!rdev->coalesce->n_rules) 9332 return 0; 9333 9334 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9335 if (!nl_rules) 9336 return -ENOBUFS; 9337 9338 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9339 nl_rule = nla_nest_start(msg, i + 1); 9340 if (!nl_rule) 9341 return -ENOBUFS; 9342 9343 rule = &rdev->coalesce->rules[i]; 9344 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9345 rule->delay)) 9346 return -ENOBUFS; 9347 9348 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9349 rule->condition)) 9350 return -ENOBUFS; 9351 9352 nl_pats = nla_nest_start(msg, 9353 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9354 if (!nl_pats) 9355 return -ENOBUFS; 9356 9357 for (j = 0; j < rule->n_patterns; j++) { 9358 nl_pat = nla_nest_start(msg, j + 1); 9359 if (!nl_pat) 9360 return -ENOBUFS; 9361 pat_len = rule->patterns[j].pattern_len; 9362 if (nla_put(msg, NL80211_PKTPAT_MASK, 9363 DIV_ROUND_UP(pat_len, 8), 9364 rule->patterns[j].mask) || 9365 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9366 rule->patterns[j].pattern) || 9367 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9368 rule->patterns[j].pkt_offset)) 9369 return -ENOBUFS; 9370 nla_nest_end(msg, nl_pat); 9371 } 9372 nla_nest_end(msg, nl_pats); 9373 nla_nest_end(msg, nl_rule); 9374 } 9375 nla_nest_end(msg, nl_rules); 9376 9377 return 0; 9378 } 9379 9380 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9381 { 9382 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9383 struct sk_buff *msg; 9384 void *hdr; 9385 9386 if (!rdev->wiphy.coalesce) 9387 return -EOPNOTSUPP; 9388 9389 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9390 if (!msg) 9391 return -ENOMEM; 9392 9393 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9394 NL80211_CMD_GET_COALESCE); 9395 if (!hdr) 9396 goto nla_put_failure; 9397 9398 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9399 goto nla_put_failure; 9400 9401 genlmsg_end(msg, hdr); 9402 return genlmsg_reply(msg, info); 9403 9404 nla_put_failure: 9405 nlmsg_free(msg); 9406 return -ENOBUFS; 9407 } 9408 9409 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9410 { 9411 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9412 int i, j; 9413 struct cfg80211_coalesce_rules *rule; 9414 9415 if (!coalesce) 9416 return; 9417 9418 for (i = 0; i < coalesce->n_rules; i++) { 9419 rule = &coalesce->rules[i]; 9420 for (j = 0; j < rule->n_patterns; j++) 9421 kfree(rule->patterns[j].mask); 9422 kfree(rule->patterns); 9423 } 9424 kfree(coalesce->rules); 9425 kfree(coalesce); 9426 rdev->coalesce = NULL; 9427 } 9428 9429 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9430 struct nlattr *rule, 9431 struct cfg80211_coalesce_rules *new_rule) 9432 { 9433 int err, i; 9434 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9435 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9436 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9437 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9438 9439 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9440 nla_len(rule), nl80211_coalesce_policy); 9441 if (err) 9442 return err; 9443 9444 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9445 new_rule->delay = 9446 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9447 if (new_rule->delay > coalesce->max_delay) 9448 return -EINVAL; 9449 9450 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9451 new_rule->condition = 9452 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9453 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9454 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9455 return -EINVAL; 9456 9457 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9458 return -EINVAL; 9459 9460 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9461 rem) 9462 n_patterns++; 9463 if (n_patterns > coalesce->n_patterns) 9464 return -EINVAL; 9465 9466 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9467 GFP_KERNEL); 9468 if (!new_rule->patterns) 9469 return -ENOMEM; 9470 9471 new_rule->n_patterns = n_patterns; 9472 i = 0; 9473 9474 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9475 rem) { 9476 u8 *mask_pat; 9477 9478 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9479 nla_len(pat), NULL); 9480 if (!pat_tb[NL80211_PKTPAT_MASK] || 9481 !pat_tb[NL80211_PKTPAT_PATTERN]) 9482 return -EINVAL; 9483 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9484 mask_len = DIV_ROUND_UP(pat_len, 8); 9485 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9486 return -EINVAL; 9487 if (pat_len > coalesce->pattern_max_len || 9488 pat_len < coalesce->pattern_min_len) 9489 return -EINVAL; 9490 9491 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9492 pkt_offset = 0; 9493 else 9494 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9495 if (pkt_offset > coalesce->max_pkt_offset) 9496 return -EINVAL; 9497 new_rule->patterns[i].pkt_offset = pkt_offset; 9498 9499 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9500 if (!mask_pat) 9501 return -ENOMEM; 9502 9503 new_rule->patterns[i].mask = mask_pat; 9504 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9505 mask_len); 9506 9507 mask_pat += mask_len; 9508 new_rule->patterns[i].pattern = mask_pat; 9509 new_rule->patterns[i].pattern_len = pat_len; 9510 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9511 pat_len); 9512 i++; 9513 } 9514 9515 return 0; 9516 } 9517 9518 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9519 { 9520 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9521 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9522 struct cfg80211_coalesce new_coalesce = {}; 9523 struct cfg80211_coalesce *n_coalesce; 9524 int err, rem_rule, n_rules = 0, i, j; 9525 struct nlattr *rule; 9526 struct cfg80211_coalesce_rules *tmp_rule; 9527 9528 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9529 return -EOPNOTSUPP; 9530 9531 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9532 cfg80211_rdev_free_coalesce(rdev); 9533 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 9534 return 0; 9535 } 9536 9537 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9538 rem_rule) 9539 n_rules++; 9540 if (n_rules > coalesce->n_rules) 9541 return -EINVAL; 9542 9543 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9544 GFP_KERNEL); 9545 if (!new_coalesce.rules) 9546 return -ENOMEM; 9547 9548 new_coalesce.n_rules = n_rules; 9549 i = 0; 9550 9551 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9552 rem_rule) { 9553 err = nl80211_parse_coalesce_rule(rdev, rule, 9554 &new_coalesce.rules[i]); 9555 if (err) 9556 goto error; 9557 9558 i++; 9559 } 9560 9561 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 9562 if (err) 9563 goto error; 9564 9565 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9566 if (!n_coalesce) { 9567 err = -ENOMEM; 9568 goto error; 9569 } 9570 cfg80211_rdev_free_coalesce(rdev); 9571 rdev->coalesce = n_coalesce; 9572 9573 return 0; 9574 error: 9575 for (i = 0; i < new_coalesce.n_rules; i++) { 9576 tmp_rule = &new_coalesce.rules[i]; 9577 for (j = 0; j < tmp_rule->n_patterns; j++) 9578 kfree(tmp_rule->patterns[j].mask); 9579 kfree(tmp_rule->patterns); 9580 } 9581 kfree(new_coalesce.rules); 9582 9583 return err; 9584 } 9585 9586 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9587 { 9588 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9589 struct net_device *dev = info->user_ptr[1]; 9590 struct wireless_dev *wdev = dev->ieee80211_ptr; 9591 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9592 struct cfg80211_gtk_rekey_data rekey_data; 9593 int err; 9594 9595 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9596 return -EINVAL; 9597 9598 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9599 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9600 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9601 nl80211_rekey_policy); 9602 if (err) 9603 return err; 9604 9605 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9606 return -ERANGE; 9607 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9608 return -ERANGE; 9609 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9610 return -ERANGE; 9611 9612 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9613 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9614 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9615 9616 wdev_lock(wdev); 9617 if (!wdev->current_bss) { 9618 err = -ENOTCONN; 9619 goto out; 9620 } 9621 9622 if (!rdev->ops->set_rekey_data) { 9623 err = -EOPNOTSUPP; 9624 goto out; 9625 } 9626 9627 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9628 out: 9629 wdev_unlock(wdev); 9630 return err; 9631 } 9632 9633 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9634 struct genl_info *info) 9635 { 9636 struct net_device *dev = info->user_ptr[1]; 9637 struct wireless_dev *wdev = dev->ieee80211_ptr; 9638 9639 if (wdev->iftype != NL80211_IFTYPE_AP && 9640 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9641 return -EINVAL; 9642 9643 if (wdev->ap_unexpected_nlportid) 9644 return -EBUSY; 9645 9646 wdev->ap_unexpected_nlportid = info->snd_portid; 9647 return 0; 9648 } 9649 9650 static int nl80211_probe_client(struct sk_buff *skb, 9651 struct genl_info *info) 9652 { 9653 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9654 struct net_device *dev = info->user_ptr[1]; 9655 struct wireless_dev *wdev = dev->ieee80211_ptr; 9656 struct sk_buff *msg; 9657 void *hdr; 9658 const u8 *addr; 9659 u64 cookie; 9660 int err; 9661 9662 if (wdev->iftype != NL80211_IFTYPE_AP && 9663 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9664 return -EOPNOTSUPP; 9665 9666 if (!info->attrs[NL80211_ATTR_MAC]) 9667 return -EINVAL; 9668 9669 if (!rdev->ops->probe_client) 9670 return -EOPNOTSUPP; 9671 9672 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9673 if (!msg) 9674 return -ENOMEM; 9675 9676 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9677 NL80211_CMD_PROBE_CLIENT); 9678 if (!hdr) { 9679 err = -ENOBUFS; 9680 goto free_msg; 9681 } 9682 9683 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9684 9685 err = rdev_probe_client(rdev, dev, addr, &cookie); 9686 if (err) 9687 goto free_msg; 9688 9689 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9690 goto nla_put_failure; 9691 9692 genlmsg_end(msg, hdr); 9693 9694 return genlmsg_reply(msg, info); 9695 9696 nla_put_failure: 9697 err = -ENOBUFS; 9698 free_msg: 9699 nlmsg_free(msg); 9700 return err; 9701 } 9702 9703 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9704 { 9705 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9706 struct cfg80211_beacon_registration *reg, *nreg; 9707 int rv; 9708 9709 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9710 return -EOPNOTSUPP; 9711 9712 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9713 if (!nreg) 9714 return -ENOMEM; 9715 9716 /* First, check if already registered. */ 9717 spin_lock_bh(&rdev->beacon_registrations_lock); 9718 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9719 if (reg->nlportid == info->snd_portid) { 9720 rv = -EALREADY; 9721 goto out_err; 9722 } 9723 } 9724 /* Add it to the list */ 9725 nreg->nlportid = info->snd_portid; 9726 list_add(&nreg->list, &rdev->beacon_registrations); 9727 9728 spin_unlock_bh(&rdev->beacon_registrations_lock); 9729 9730 return 0; 9731 out_err: 9732 spin_unlock_bh(&rdev->beacon_registrations_lock); 9733 kfree(nreg); 9734 return rv; 9735 } 9736 9737 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9738 { 9739 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9740 struct wireless_dev *wdev = info->user_ptr[1]; 9741 int err; 9742 9743 if (!rdev->ops->start_p2p_device) 9744 return -EOPNOTSUPP; 9745 9746 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9747 return -EOPNOTSUPP; 9748 9749 if (wdev->p2p_started) 9750 return 0; 9751 9752 if (rfkill_blocked(rdev->rfkill)) 9753 return -ERFKILL; 9754 9755 err = rdev_start_p2p_device(rdev, wdev); 9756 if (err) 9757 return err; 9758 9759 wdev->p2p_started = true; 9760 rdev->opencount++; 9761 9762 return 0; 9763 } 9764 9765 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 9766 { 9767 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9768 struct wireless_dev *wdev = info->user_ptr[1]; 9769 9770 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9771 return -EOPNOTSUPP; 9772 9773 if (!rdev->ops->stop_p2p_device) 9774 return -EOPNOTSUPP; 9775 9776 cfg80211_stop_p2p_device(rdev, wdev); 9777 9778 return 0; 9779 } 9780 9781 static int nl80211_get_protocol_features(struct sk_buff *skb, 9782 struct genl_info *info) 9783 { 9784 void *hdr; 9785 struct sk_buff *msg; 9786 9787 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9788 if (!msg) 9789 return -ENOMEM; 9790 9791 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9792 NL80211_CMD_GET_PROTOCOL_FEATURES); 9793 if (!hdr) 9794 goto nla_put_failure; 9795 9796 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 9797 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 9798 goto nla_put_failure; 9799 9800 genlmsg_end(msg, hdr); 9801 return genlmsg_reply(msg, info); 9802 9803 nla_put_failure: 9804 kfree_skb(msg); 9805 return -ENOBUFS; 9806 } 9807 9808 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 9809 { 9810 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9811 struct cfg80211_update_ft_ies_params ft_params; 9812 struct net_device *dev = info->user_ptr[1]; 9813 9814 if (!rdev->ops->update_ft_ies) 9815 return -EOPNOTSUPP; 9816 9817 if (!info->attrs[NL80211_ATTR_MDID] || 9818 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9819 return -EINVAL; 9820 9821 memset(&ft_params, 0, sizeof(ft_params)); 9822 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 9823 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9824 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9825 9826 return rdev_update_ft_ies(rdev, dev, &ft_params); 9827 } 9828 9829 static int nl80211_crit_protocol_start(struct sk_buff *skb, 9830 struct genl_info *info) 9831 { 9832 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9833 struct wireless_dev *wdev = info->user_ptr[1]; 9834 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 9835 u16 duration; 9836 int ret; 9837 9838 if (!rdev->ops->crit_proto_start) 9839 return -EOPNOTSUPP; 9840 9841 if (WARN_ON(!rdev->ops->crit_proto_stop)) 9842 return -EINVAL; 9843 9844 if (rdev->crit_proto_nlportid) 9845 return -EBUSY; 9846 9847 /* determine protocol if provided */ 9848 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 9849 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 9850 9851 if (proto >= NUM_NL80211_CRIT_PROTO) 9852 return -EINVAL; 9853 9854 /* timeout must be provided */ 9855 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 9856 return -EINVAL; 9857 9858 duration = 9859 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 9860 9861 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 9862 return -ERANGE; 9863 9864 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 9865 if (!ret) 9866 rdev->crit_proto_nlportid = info->snd_portid; 9867 9868 return ret; 9869 } 9870 9871 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 9872 struct genl_info *info) 9873 { 9874 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9875 struct wireless_dev *wdev = info->user_ptr[1]; 9876 9877 if (!rdev->ops->crit_proto_stop) 9878 return -EOPNOTSUPP; 9879 9880 if (rdev->crit_proto_nlportid) { 9881 rdev->crit_proto_nlportid = 0; 9882 rdev_crit_proto_stop(rdev, wdev); 9883 } 9884 return 0; 9885 } 9886 9887 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 9888 { 9889 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9890 struct wireless_dev *wdev = 9891 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9892 int i, err; 9893 u32 vid, subcmd; 9894 9895 if (!rdev->wiphy.vendor_commands) 9896 return -EOPNOTSUPP; 9897 9898 if (IS_ERR(wdev)) { 9899 err = PTR_ERR(wdev); 9900 if (err != -EINVAL) 9901 return err; 9902 wdev = NULL; 9903 } else if (wdev->wiphy != &rdev->wiphy) { 9904 return -EINVAL; 9905 } 9906 9907 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9908 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9909 return -EINVAL; 9910 9911 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9912 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9913 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9914 const struct wiphy_vendor_command *vcmd; 9915 void *data = NULL; 9916 int len = 0; 9917 9918 vcmd = &rdev->wiphy.vendor_commands[i]; 9919 9920 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9921 continue; 9922 9923 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9924 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9925 if (!wdev) 9926 return -EINVAL; 9927 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9928 !wdev->netdev) 9929 return -EINVAL; 9930 9931 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9932 if (wdev->netdev && 9933 !netif_running(wdev->netdev)) 9934 return -ENETDOWN; 9935 if (!wdev->netdev && !wdev->p2p_started) 9936 return -ENETDOWN; 9937 } 9938 } else { 9939 wdev = NULL; 9940 } 9941 9942 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9943 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9944 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9945 } 9946 9947 rdev->cur_cmd_info = info; 9948 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9949 data, len); 9950 rdev->cur_cmd_info = NULL; 9951 return err; 9952 } 9953 9954 return -EOPNOTSUPP; 9955 } 9956 9957 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9958 enum nl80211_commands cmd, 9959 enum nl80211_attrs attr, 9960 int approxlen) 9961 { 9962 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9963 9964 if (WARN_ON(!rdev->cur_cmd_info)) 9965 return NULL; 9966 9967 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 9968 rdev->cur_cmd_info->snd_portid, 9969 rdev->cur_cmd_info->snd_seq, 9970 cmd, attr, NULL, GFP_KERNEL); 9971 } 9972 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9973 9974 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9975 { 9976 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9977 void *hdr = ((void **)skb->cb)[1]; 9978 struct nlattr *data = ((void **)skb->cb)[2]; 9979 9980 /* clear CB data for netlink core to own from now on */ 9981 memset(skb->cb, 0, sizeof(skb->cb)); 9982 9983 if (WARN_ON(!rdev->cur_cmd_info)) { 9984 kfree_skb(skb); 9985 return -EINVAL; 9986 } 9987 9988 nla_nest_end(skb, data); 9989 genlmsg_end(skb, hdr); 9990 return genlmsg_reply(skb, rdev->cur_cmd_info); 9991 } 9992 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9993 9994 9995 static int nl80211_set_qos_map(struct sk_buff *skb, 9996 struct genl_info *info) 9997 { 9998 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9999 struct cfg80211_qos_map *qos_map = NULL; 10000 struct net_device *dev = info->user_ptr[1]; 10001 u8 *pos, len, num_des, des_len, des; 10002 int ret; 10003 10004 if (!rdev->ops->set_qos_map) 10005 return -EOPNOTSUPP; 10006 10007 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 10008 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 10009 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 10010 10011 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 10012 len > IEEE80211_QOS_MAP_LEN_MAX) 10013 return -EINVAL; 10014 10015 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 10016 if (!qos_map) 10017 return -ENOMEM; 10018 10019 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 10020 if (num_des) { 10021 des_len = num_des * 10022 sizeof(struct cfg80211_dscp_exception); 10023 memcpy(qos_map->dscp_exception, pos, des_len); 10024 qos_map->num_des = num_des; 10025 for (des = 0; des < num_des; des++) { 10026 if (qos_map->dscp_exception[des].up > 7) { 10027 kfree(qos_map); 10028 return -EINVAL; 10029 } 10030 } 10031 pos += des_len; 10032 } 10033 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 10034 } 10035 10036 wdev_lock(dev->ieee80211_ptr); 10037 ret = nl80211_key_allowed(dev->ieee80211_ptr); 10038 if (!ret) 10039 ret = rdev_set_qos_map(rdev, dev, qos_map); 10040 wdev_unlock(dev->ieee80211_ptr); 10041 10042 kfree(qos_map); 10043 return ret; 10044 } 10045 10046 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 10047 { 10048 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10049 struct net_device *dev = info->user_ptr[1]; 10050 struct wireless_dev *wdev = dev->ieee80211_ptr; 10051 const u8 *peer; 10052 u8 tsid, up; 10053 u16 admitted_time = 0; 10054 int err; 10055 10056 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 10057 return -EOPNOTSUPP; 10058 10059 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10060 !info->attrs[NL80211_ATTR_USER_PRIO]) 10061 return -EINVAL; 10062 10063 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10064 if (tsid >= IEEE80211_NUM_TIDS) 10065 return -EINVAL; 10066 10067 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10068 if (up >= IEEE80211_NUM_UPS) 10069 return -EINVAL; 10070 10071 /* WMM uses TIDs 0-7 even for TSPEC */ 10072 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10073 /* TODO: handle 802.11 TSPEC/admission control 10074 * need more attributes for that (e.g. BA session requirement); 10075 * change the WMM adminssion test above to allow both then 10076 */ 10077 return -EINVAL; 10078 } 10079 10080 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10081 10082 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10083 admitted_time = 10084 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10085 if (!admitted_time) 10086 return -EINVAL; 10087 } 10088 10089 wdev_lock(wdev); 10090 switch (wdev->iftype) { 10091 case NL80211_IFTYPE_STATION: 10092 case NL80211_IFTYPE_P2P_CLIENT: 10093 if (wdev->current_bss) 10094 break; 10095 err = -ENOTCONN; 10096 goto out; 10097 default: 10098 err = -EOPNOTSUPP; 10099 goto out; 10100 } 10101 10102 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10103 10104 out: 10105 wdev_unlock(wdev); 10106 return err; 10107 } 10108 10109 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10110 { 10111 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10112 struct net_device *dev = info->user_ptr[1]; 10113 struct wireless_dev *wdev = dev->ieee80211_ptr; 10114 const u8 *peer; 10115 u8 tsid; 10116 int err; 10117 10118 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10119 return -EINVAL; 10120 10121 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10122 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10123 10124 wdev_lock(wdev); 10125 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10126 wdev_unlock(wdev); 10127 10128 return err; 10129 } 10130 10131 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10132 struct genl_info *info) 10133 { 10134 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10135 struct net_device *dev = info->user_ptr[1]; 10136 struct wireless_dev *wdev = dev->ieee80211_ptr; 10137 struct cfg80211_chan_def chandef = {}; 10138 const u8 *addr; 10139 u8 oper_class; 10140 int err; 10141 10142 if (!rdev->ops->tdls_channel_switch || 10143 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10144 return -EOPNOTSUPP; 10145 10146 switch (dev->ieee80211_ptr->iftype) { 10147 case NL80211_IFTYPE_STATION: 10148 case NL80211_IFTYPE_P2P_CLIENT: 10149 break; 10150 default: 10151 return -EOPNOTSUPP; 10152 } 10153 10154 if (!info->attrs[NL80211_ATTR_MAC] || 10155 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10156 return -EINVAL; 10157 10158 err = nl80211_parse_chandef(rdev, info, &chandef); 10159 if (err) 10160 return err; 10161 10162 /* 10163 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10164 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10165 * specification is not defined for them. 10166 */ 10167 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 10168 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10169 chandef.width != NL80211_CHAN_WIDTH_20) 10170 return -EINVAL; 10171 10172 /* we will be active on the TDLS link */ 10173 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype)) 10174 return -EINVAL; 10175 10176 /* don't allow switching to DFS channels */ 10177 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10178 return -EINVAL; 10179 10180 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10181 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10182 10183 wdev_lock(wdev); 10184 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10185 wdev_unlock(wdev); 10186 10187 return err; 10188 } 10189 10190 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10191 struct genl_info *info) 10192 { 10193 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10194 struct net_device *dev = info->user_ptr[1]; 10195 struct wireless_dev *wdev = dev->ieee80211_ptr; 10196 const u8 *addr; 10197 10198 if (!rdev->ops->tdls_channel_switch || 10199 !rdev->ops->tdls_cancel_channel_switch || 10200 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10201 return -EOPNOTSUPP; 10202 10203 switch (dev->ieee80211_ptr->iftype) { 10204 case NL80211_IFTYPE_STATION: 10205 case NL80211_IFTYPE_P2P_CLIENT: 10206 break; 10207 default: 10208 return -EOPNOTSUPP; 10209 } 10210 10211 if (!info->attrs[NL80211_ATTR_MAC]) 10212 return -EINVAL; 10213 10214 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10215 10216 wdev_lock(wdev); 10217 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10218 wdev_unlock(wdev); 10219 10220 return 0; 10221 } 10222 10223 #define NL80211_FLAG_NEED_WIPHY 0x01 10224 #define NL80211_FLAG_NEED_NETDEV 0x02 10225 #define NL80211_FLAG_NEED_RTNL 0x04 10226 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10227 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10228 NL80211_FLAG_CHECK_NETDEV_UP) 10229 #define NL80211_FLAG_NEED_WDEV 0x10 10230 /* If a netdev is associated, it must be UP, P2P must be started */ 10231 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10232 NL80211_FLAG_CHECK_NETDEV_UP) 10233 #define NL80211_FLAG_CLEAR_SKB 0x20 10234 10235 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10236 struct genl_info *info) 10237 { 10238 struct cfg80211_registered_device *rdev; 10239 struct wireless_dev *wdev; 10240 struct net_device *dev; 10241 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10242 10243 if (rtnl) 10244 rtnl_lock(); 10245 10246 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10247 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10248 if (IS_ERR(rdev)) { 10249 if (rtnl) 10250 rtnl_unlock(); 10251 return PTR_ERR(rdev); 10252 } 10253 info->user_ptr[0] = rdev; 10254 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 10255 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10256 ASSERT_RTNL(); 10257 10258 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 10259 info->attrs); 10260 if (IS_ERR(wdev)) { 10261 if (rtnl) 10262 rtnl_unlock(); 10263 return PTR_ERR(wdev); 10264 } 10265 10266 dev = wdev->netdev; 10267 rdev = wiphy_to_rdev(wdev->wiphy); 10268 10269 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 10270 if (!dev) { 10271 if (rtnl) 10272 rtnl_unlock(); 10273 return -EINVAL; 10274 } 10275 10276 info->user_ptr[1] = dev; 10277 } else { 10278 info->user_ptr[1] = wdev; 10279 } 10280 10281 if (dev) { 10282 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 10283 !netif_running(dev)) { 10284 if (rtnl) 10285 rtnl_unlock(); 10286 return -ENETDOWN; 10287 } 10288 10289 dev_hold(dev); 10290 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 10291 if (!wdev->p2p_started) { 10292 if (rtnl) 10293 rtnl_unlock(); 10294 return -ENETDOWN; 10295 } 10296 } 10297 10298 info->user_ptr[0] = rdev; 10299 } 10300 10301 return 0; 10302 } 10303 10304 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10305 struct genl_info *info) 10306 { 10307 if (info->user_ptr[1]) { 10308 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10309 struct wireless_dev *wdev = info->user_ptr[1]; 10310 10311 if (wdev->netdev) 10312 dev_put(wdev->netdev); 10313 } else { 10314 dev_put(info->user_ptr[1]); 10315 } 10316 } 10317 10318 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10319 rtnl_unlock(); 10320 10321 /* If needed, clear the netlink message payload from the SKB 10322 * as it might contain key data that shouldn't stick around on 10323 * the heap after the SKB is freed. The netlink message header 10324 * is still needed for further processing, so leave it intact. 10325 */ 10326 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10327 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10328 10329 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10330 } 10331 } 10332 10333 static const struct genl_ops nl80211_ops[] = { 10334 { 10335 .cmd = NL80211_CMD_GET_WIPHY, 10336 .doit = nl80211_get_wiphy, 10337 .dumpit = nl80211_dump_wiphy, 10338 .done = nl80211_dump_wiphy_done, 10339 .policy = nl80211_policy, 10340 /* can be retrieved by unprivileged users */ 10341 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10342 NL80211_FLAG_NEED_RTNL, 10343 }, 10344 { 10345 .cmd = NL80211_CMD_SET_WIPHY, 10346 .doit = nl80211_set_wiphy, 10347 .policy = nl80211_policy, 10348 .flags = GENL_ADMIN_PERM, 10349 .internal_flags = NL80211_FLAG_NEED_RTNL, 10350 }, 10351 { 10352 .cmd = NL80211_CMD_GET_INTERFACE, 10353 .doit = nl80211_get_interface, 10354 .dumpit = nl80211_dump_interface, 10355 .policy = nl80211_policy, 10356 /* can be retrieved by unprivileged users */ 10357 .internal_flags = NL80211_FLAG_NEED_WDEV | 10358 NL80211_FLAG_NEED_RTNL, 10359 }, 10360 { 10361 .cmd = NL80211_CMD_SET_INTERFACE, 10362 .doit = nl80211_set_interface, 10363 .policy = nl80211_policy, 10364 .flags = GENL_ADMIN_PERM, 10365 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10366 NL80211_FLAG_NEED_RTNL, 10367 }, 10368 { 10369 .cmd = NL80211_CMD_NEW_INTERFACE, 10370 .doit = nl80211_new_interface, 10371 .policy = nl80211_policy, 10372 .flags = GENL_ADMIN_PERM, 10373 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10374 NL80211_FLAG_NEED_RTNL, 10375 }, 10376 { 10377 .cmd = NL80211_CMD_DEL_INTERFACE, 10378 .doit = nl80211_del_interface, 10379 .policy = nl80211_policy, 10380 .flags = GENL_ADMIN_PERM, 10381 .internal_flags = NL80211_FLAG_NEED_WDEV | 10382 NL80211_FLAG_NEED_RTNL, 10383 }, 10384 { 10385 .cmd = NL80211_CMD_GET_KEY, 10386 .doit = nl80211_get_key, 10387 .policy = nl80211_policy, 10388 .flags = GENL_ADMIN_PERM, 10389 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10390 NL80211_FLAG_NEED_RTNL, 10391 }, 10392 { 10393 .cmd = NL80211_CMD_SET_KEY, 10394 .doit = nl80211_set_key, 10395 .policy = nl80211_policy, 10396 .flags = GENL_ADMIN_PERM, 10397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10398 NL80211_FLAG_NEED_RTNL | 10399 NL80211_FLAG_CLEAR_SKB, 10400 }, 10401 { 10402 .cmd = NL80211_CMD_NEW_KEY, 10403 .doit = nl80211_new_key, 10404 .policy = nl80211_policy, 10405 .flags = GENL_ADMIN_PERM, 10406 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10407 NL80211_FLAG_NEED_RTNL | 10408 NL80211_FLAG_CLEAR_SKB, 10409 }, 10410 { 10411 .cmd = NL80211_CMD_DEL_KEY, 10412 .doit = nl80211_del_key, 10413 .policy = nl80211_policy, 10414 .flags = GENL_ADMIN_PERM, 10415 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10416 NL80211_FLAG_NEED_RTNL, 10417 }, 10418 { 10419 .cmd = NL80211_CMD_SET_BEACON, 10420 .policy = nl80211_policy, 10421 .flags = GENL_ADMIN_PERM, 10422 .doit = nl80211_set_beacon, 10423 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10424 NL80211_FLAG_NEED_RTNL, 10425 }, 10426 { 10427 .cmd = NL80211_CMD_START_AP, 10428 .policy = nl80211_policy, 10429 .flags = GENL_ADMIN_PERM, 10430 .doit = nl80211_start_ap, 10431 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10432 NL80211_FLAG_NEED_RTNL, 10433 }, 10434 { 10435 .cmd = NL80211_CMD_STOP_AP, 10436 .policy = nl80211_policy, 10437 .flags = GENL_ADMIN_PERM, 10438 .doit = nl80211_stop_ap, 10439 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10440 NL80211_FLAG_NEED_RTNL, 10441 }, 10442 { 10443 .cmd = NL80211_CMD_GET_STATION, 10444 .doit = nl80211_get_station, 10445 .dumpit = nl80211_dump_station, 10446 .policy = nl80211_policy, 10447 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10448 NL80211_FLAG_NEED_RTNL, 10449 }, 10450 { 10451 .cmd = NL80211_CMD_SET_STATION, 10452 .doit = nl80211_set_station, 10453 .policy = nl80211_policy, 10454 .flags = GENL_ADMIN_PERM, 10455 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10456 NL80211_FLAG_NEED_RTNL, 10457 }, 10458 { 10459 .cmd = NL80211_CMD_NEW_STATION, 10460 .doit = nl80211_new_station, 10461 .policy = nl80211_policy, 10462 .flags = GENL_ADMIN_PERM, 10463 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10464 NL80211_FLAG_NEED_RTNL, 10465 }, 10466 { 10467 .cmd = NL80211_CMD_DEL_STATION, 10468 .doit = nl80211_del_station, 10469 .policy = nl80211_policy, 10470 .flags = GENL_ADMIN_PERM, 10471 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10472 NL80211_FLAG_NEED_RTNL, 10473 }, 10474 { 10475 .cmd = NL80211_CMD_GET_MPATH, 10476 .doit = nl80211_get_mpath, 10477 .dumpit = nl80211_dump_mpath, 10478 .policy = nl80211_policy, 10479 .flags = GENL_ADMIN_PERM, 10480 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10481 NL80211_FLAG_NEED_RTNL, 10482 }, 10483 { 10484 .cmd = NL80211_CMD_GET_MPP, 10485 .doit = nl80211_get_mpp, 10486 .dumpit = nl80211_dump_mpp, 10487 .policy = nl80211_policy, 10488 .flags = GENL_ADMIN_PERM, 10489 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10490 NL80211_FLAG_NEED_RTNL, 10491 }, 10492 { 10493 .cmd = NL80211_CMD_SET_MPATH, 10494 .doit = nl80211_set_mpath, 10495 .policy = nl80211_policy, 10496 .flags = GENL_ADMIN_PERM, 10497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10498 NL80211_FLAG_NEED_RTNL, 10499 }, 10500 { 10501 .cmd = NL80211_CMD_NEW_MPATH, 10502 .doit = nl80211_new_mpath, 10503 .policy = nl80211_policy, 10504 .flags = GENL_ADMIN_PERM, 10505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10506 NL80211_FLAG_NEED_RTNL, 10507 }, 10508 { 10509 .cmd = NL80211_CMD_DEL_MPATH, 10510 .doit = nl80211_del_mpath, 10511 .policy = nl80211_policy, 10512 .flags = GENL_ADMIN_PERM, 10513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10514 NL80211_FLAG_NEED_RTNL, 10515 }, 10516 { 10517 .cmd = NL80211_CMD_SET_BSS, 10518 .doit = nl80211_set_bss, 10519 .policy = nl80211_policy, 10520 .flags = GENL_ADMIN_PERM, 10521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10522 NL80211_FLAG_NEED_RTNL, 10523 }, 10524 { 10525 .cmd = NL80211_CMD_GET_REG, 10526 .doit = nl80211_get_reg_do, 10527 .dumpit = nl80211_get_reg_dump, 10528 .policy = nl80211_policy, 10529 .internal_flags = NL80211_FLAG_NEED_RTNL, 10530 /* can be retrieved by unprivileged users */ 10531 }, 10532 { 10533 .cmd = NL80211_CMD_SET_REG, 10534 .doit = nl80211_set_reg, 10535 .policy = nl80211_policy, 10536 .flags = GENL_ADMIN_PERM, 10537 .internal_flags = NL80211_FLAG_NEED_RTNL, 10538 }, 10539 { 10540 .cmd = NL80211_CMD_REQ_SET_REG, 10541 .doit = nl80211_req_set_reg, 10542 .policy = nl80211_policy, 10543 .flags = GENL_ADMIN_PERM, 10544 }, 10545 { 10546 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10547 .doit = nl80211_get_mesh_config, 10548 .policy = nl80211_policy, 10549 /* can be retrieved by unprivileged users */ 10550 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10551 NL80211_FLAG_NEED_RTNL, 10552 }, 10553 { 10554 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10555 .doit = nl80211_update_mesh_config, 10556 .policy = nl80211_policy, 10557 .flags = GENL_ADMIN_PERM, 10558 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10559 NL80211_FLAG_NEED_RTNL, 10560 }, 10561 { 10562 .cmd = NL80211_CMD_TRIGGER_SCAN, 10563 .doit = nl80211_trigger_scan, 10564 .policy = nl80211_policy, 10565 .flags = GENL_ADMIN_PERM, 10566 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10567 NL80211_FLAG_NEED_RTNL, 10568 }, 10569 { 10570 .cmd = NL80211_CMD_GET_SCAN, 10571 .policy = nl80211_policy, 10572 .dumpit = nl80211_dump_scan, 10573 }, 10574 { 10575 .cmd = NL80211_CMD_START_SCHED_SCAN, 10576 .doit = nl80211_start_sched_scan, 10577 .policy = nl80211_policy, 10578 .flags = GENL_ADMIN_PERM, 10579 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10580 NL80211_FLAG_NEED_RTNL, 10581 }, 10582 { 10583 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 10584 .doit = nl80211_stop_sched_scan, 10585 .policy = nl80211_policy, 10586 .flags = GENL_ADMIN_PERM, 10587 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10588 NL80211_FLAG_NEED_RTNL, 10589 }, 10590 { 10591 .cmd = NL80211_CMD_AUTHENTICATE, 10592 .doit = nl80211_authenticate, 10593 .policy = nl80211_policy, 10594 .flags = GENL_ADMIN_PERM, 10595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10596 NL80211_FLAG_NEED_RTNL | 10597 NL80211_FLAG_CLEAR_SKB, 10598 }, 10599 { 10600 .cmd = NL80211_CMD_ASSOCIATE, 10601 .doit = nl80211_associate, 10602 .policy = nl80211_policy, 10603 .flags = GENL_ADMIN_PERM, 10604 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10605 NL80211_FLAG_NEED_RTNL, 10606 }, 10607 { 10608 .cmd = NL80211_CMD_DEAUTHENTICATE, 10609 .doit = nl80211_deauthenticate, 10610 .policy = nl80211_policy, 10611 .flags = GENL_ADMIN_PERM, 10612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10613 NL80211_FLAG_NEED_RTNL, 10614 }, 10615 { 10616 .cmd = NL80211_CMD_DISASSOCIATE, 10617 .doit = nl80211_disassociate, 10618 .policy = nl80211_policy, 10619 .flags = GENL_ADMIN_PERM, 10620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10621 NL80211_FLAG_NEED_RTNL, 10622 }, 10623 { 10624 .cmd = NL80211_CMD_JOIN_IBSS, 10625 .doit = nl80211_join_ibss, 10626 .policy = nl80211_policy, 10627 .flags = GENL_ADMIN_PERM, 10628 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10629 NL80211_FLAG_NEED_RTNL, 10630 }, 10631 { 10632 .cmd = NL80211_CMD_LEAVE_IBSS, 10633 .doit = nl80211_leave_ibss, 10634 .policy = nl80211_policy, 10635 .flags = GENL_ADMIN_PERM, 10636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10637 NL80211_FLAG_NEED_RTNL, 10638 }, 10639 #ifdef CONFIG_NL80211_TESTMODE 10640 { 10641 .cmd = NL80211_CMD_TESTMODE, 10642 .doit = nl80211_testmode_do, 10643 .dumpit = nl80211_testmode_dump, 10644 .policy = nl80211_policy, 10645 .flags = GENL_ADMIN_PERM, 10646 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10647 NL80211_FLAG_NEED_RTNL, 10648 }, 10649 #endif 10650 { 10651 .cmd = NL80211_CMD_CONNECT, 10652 .doit = nl80211_connect, 10653 .policy = nl80211_policy, 10654 .flags = GENL_ADMIN_PERM, 10655 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10656 NL80211_FLAG_NEED_RTNL, 10657 }, 10658 { 10659 .cmd = NL80211_CMD_DISCONNECT, 10660 .doit = nl80211_disconnect, 10661 .policy = nl80211_policy, 10662 .flags = GENL_ADMIN_PERM, 10663 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10664 NL80211_FLAG_NEED_RTNL, 10665 }, 10666 { 10667 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 10668 .doit = nl80211_wiphy_netns, 10669 .policy = nl80211_policy, 10670 .flags = GENL_ADMIN_PERM, 10671 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10672 NL80211_FLAG_NEED_RTNL, 10673 }, 10674 { 10675 .cmd = NL80211_CMD_GET_SURVEY, 10676 .policy = nl80211_policy, 10677 .dumpit = nl80211_dump_survey, 10678 }, 10679 { 10680 .cmd = NL80211_CMD_SET_PMKSA, 10681 .doit = nl80211_setdel_pmksa, 10682 .policy = nl80211_policy, 10683 .flags = GENL_ADMIN_PERM, 10684 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10685 NL80211_FLAG_NEED_RTNL, 10686 }, 10687 { 10688 .cmd = NL80211_CMD_DEL_PMKSA, 10689 .doit = nl80211_setdel_pmksa, 10690 .policy = nl80211_policy, 10691 .flags = GENL_ADMIN_PERM, 10692 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10693 NL80211_FLAG_NEED_RTNL, 10694 }, 10695 { 10696 .cmd = NL80211_CMD_FLUSH_PMKSA, 10697 .doit = nl80211_flush_pmksa, 10698 .policy = nl80211_policy, 10699 .flags = GENL_ADMIN_PERM, 10700 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10701 NL80211_FLAG_NEED_RTNL, 10702 }, 10703 { 10704 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 10705 .doit = nl80211_remain_on_channel, 10706 .policy = nl80211_policy, 10707 .flags = GENL_ADMIN_PERM, 10708 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10709 NL80211_FLAG_NEED_RTNL, 10710 }, 10711 { 10712 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10713 .doit = nl80211_cancel_remain_on_channel, 10714 .policy = nl80211_policy, 10715 .flags = GENL_ADMIN_PERM, 10716 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10717 NL80211_FLAG_NEED_RTNL, 10718 }, 10719 { 10720 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 10721 .doit = nl80211_set_tx_bitrate_mask, 10722 .policy = nl80211_policy, 10723 .flags = GENL_ADMIN_PERM, 10724 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10725 NL80211_FLAG_NEED_RTNL, 10726 }, 10727 { 10728 .cmd = NL80211_CMD_REGISTER_FRAME, 10729 .doit = nl80211_register_mgmt, 10730 .policy = nl80211_policy, 10731 .flags = GENL_ADMIN_PERM, 10732 .internal_flags = NL80211_FLAG_NEED_WDEV | 10733 NL80211_FLAG_NEED_RTNL, 10734 }, 10735 { 10736 .cmd = NL80211_CMD_FRAME, 10737 .doit = nl80211_tx_mgmt, 10738 .policy = nl80211_policy, 10739 .flags = GENL_ADMIN_PERM, 10740 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10741 NL80211_FLAG_NEED_RTNL, 10742 }, 10743 { 10744 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 10745 .doit = nl80211_tx_mgmt_cancel_wait, 10746 .policy = nl80211_policy, 10747 .flags = GENL_ADMIN_PERM, 10748 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10749 NL80211_FLAG_NEED_RTNL, 10750 }, 10751 { 10752 .cmd = NL80211_CMD_SET_POWER_SAVE, 10753 .doit = nl80211_set_power_save, 10754 .policy = nl80211_policy, 10755 .flags = GENL_ADMIN_PERM, 10756 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10757 NL80211_FLAG_NEED_RTNL, 10758 }, 10759 { 10760 .cmd = NL80211_CMD_GET_POWER_SAVE, 10761 .doit = nl80211_get_power_save, 10762 .policy = nl80211_policy, 10763 /* can be retrieved by unprivileged users */ 10764 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10765 NL80211_FLAG_NEED_RTNL, 10766 }, 10767 { 10768 .cmd = NL80211_CMD_SET_CQM, 10769 .doit = nl80211_set_cqm, 10770 .policy = nl80211_policy, 10771 .flags = GENL_ADMIN_PERM, 10772 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10773 NL80211_FLAG_NEED_RTNL, 10774 }, 10775 { 10776 .cmd = NL80211_CMD_SET_CHANNEL, 10777 .doit = nl80211_set_channel, 10778 .policy = nl80211_policy, 10779 .flags = GENL_ADMIN_PERM, 10780 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10781 NL80211_FLAG_NEED_RTNL, 10782 }, 10783 { 10784 .cmd = NL80211_CMD_SET_WDS_PEER, 10785 .doit = nl80211_set_wds_peer, 10786 .policy = nl80211_policy, 10787 .flags = GENL_ADMIN_PERM, 10788 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10789 NL80211_FLAG_NEED_RTNL, 10790 }, 10791 { 10792 .cmd = NL80211_CMD_JOIN_MESH, 10793 .doit = nl80211_join_mesh, 10794 .policy = nl80211_policy, 10795 .flags = GENL_ADMIN_PERM, 10796 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10797 NL80211_FLAG_NEED_RTNL, 10798 }, 10799 { 10800 .cmd = NL80211_CMD_LEAVE_MESH, 10801 .doit = nl80211_leave_mesh, 10802 .policy = nl80211_policy, 10803 .flags = GENL_ADMIN_PERM, 10804 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10805 NL80211_FLAG_NEED_RTNL, 10806 }, 10807 { 10808 .cmd = NL80211_CMD_JOIN_OCB, 10809 .doit = nl80211_join_ocb, 10810 .policy = nl80211_policy, 10811 .flags = GENL_ADMIN_PERM, 10812 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10813 NL80211_FLAG_NEED_RTNL, 10814 }, 10815 { 10816 .cmd = NL80211_CMD_LEAVE_OCB, 10817 .doit = nl80211_leave_ocb, 10818 .policy = nl80211_policy, 10819 .flags = GENL_ADMIN_PERM, 10820 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10821 NL80211_FLAG_NEED_RTNL, 10822 }, 10823 #ifdef CONFIG_PM 10824 { 10825 .cmd = NL80211_CMD_GET_WOWLAN, 10826 .doit = nl80211_get_wowlan, 10827 .policy = nl80211_policy, 10828 /* can be retrieved by unprivileged users */ 10829 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10830 NL80211_FLAG_NEED_RTNL, 10831 }, 10832 { 10833 .cmd = NL80211_CMD_SET_WOWLAN, 10834 .doit = nl80211_set_wowlan, 10835 .policy = nl80211_policy, 10836 .flags = GENL_ADMIN_PERM, 10837 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10838 NL80211_FLAG_NEED_RTNL, 10839 }, 10840 #endif 10841 { 10842 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 10843 .doit = nl80211_set_rekey_data, 10844 .policy = nl80211_policy, 10845 .flags = GENL_ADMIN_PERM, 10846 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10847 NL80211_FLAG_NEED_RTNL | 10848 NL80211_FLAG_CLEAR_SKB, 10849 }, 10850 { 10851 .cmd = NL80211_CMD_TDLS_MGMT, 10852 .doit = nl80211_tdls_mgmt, 10853 .policy = nl80211_policy, 10854 .flags = GENL_ADMIN_PERM, 10855 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10856 NL80211_FLAG_NEED_RTNL, 10857 }, 10858 { 10859 .cmd = NL80211_CMD_TDLS_OPER, 10860 .doit = nl80211_tdls_oper, 10861 .policy = nl80211_policy, 10862 .flags = GENL_ADMIN_PERM, 10863 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10864 NL80211_FLAG_NEED_RTNL, 10865 }, 10866 { 10867 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 10868 .doit = nl80211_register_unexpected_frame, 10869 .policy = nl80211_policy, 10870 .flags = GENL_ADMIN_PERM, 10871 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10872 NL80211_FLAG_NEED_RTNL, 10873 }, 10874 { 10875 .cmd = NL80211_CMD_PROBE_CLIENT, 10876 .doit = nl80211_probe_client, 10877 .policy = nl80211_policy, 10878 .flags = GENL_ADMIN_PERM, 10879 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10880 NL80211_FLAG_NEED_RTNL, 10881 }, 10882 { 10883 .cmd = NL80211_CMD_REGISTER_BEACONS, 10884 .doit = nl80211_register_beacons, 10885 .policy = nl80211_policy, 10886 .flags = GENL_ADMIN_PERM, 10887 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10888 NL80211_FLAG_NEED_RTNL, 10889 }, 10890 { 10891 .cmd = NL80211_CMD_SET_NOACK_MAP, 10892 .doit = nl80211_set_noack_map, 10893 .policy = nl80211_policy, 10894 .flags = GENL_ADMIN_PERM, 10895 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10896 NL80211_FLAG_NEED_RTNL, 10897 }, 10898 { 10899 .cmd = NL80211_CMD_START_P2P_DEVICE, 10900 .doit = nl80211_start_p2p_device, 10901 .policy = nl80211_policy, 10902 .flags = GENL_ADMIN_PERM, 10903 .internal_flags = NL80211_FLAG_NEED_WDEV | 10904 NL80211_FLAG_NEED_RTNL, 10905 }, 10906 { 10907 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 10908 .doit = nl80211_stop_p2p_device, 10909 .policy = nl80211_policy, 10910 .flags = GENL_ADMIN_PERM, 10911 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10912 NL80211_FLAG_NEED_RTNL, 10913 }, 10914 { 10915 .cmd = NL80211_CMD_SET_MCAST_RATE, 10916 .doit = nl80211_set_mcast_rate, 10917 .policy = nl80211_policy, 10918 .flags = GENL_ADMIN_PERM, 10919 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10920 NL80211_FLAG_NEED_RTNL, 10921 }, 10922 { 10923 .cmd = NL80211_CMD_SET_MAC_ACL, 10924 .doit = nl80211_set_mac_acl, 10925 .policy = nl80211_policy, 10926 .flags = GENL_ADMIN_PERM, 10927 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10928 NL80211_FLAG_NEED_RTNL, 10929 }, 10930 { 10931 .cmd = NL80211_CMD_RADAR_DETECT, 10932 .doit = nl80211_start_radar_detection, 10933 .policy = nl80211_policy, 10934 .flags = GENL_ADMIN_PERM, 10935 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10936 NL80211_FLAG_NEED_RTNL, 10937 }, 10938 { 10939 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 10940 .doit = nl80211_get_protocol_features, 10941 .policy = nl80211_policy, 10942 }, 10943 { 10944 .cmd = NL80211_CMD_UPDATE_FT_IES, 10945 .doit = nl80211_update_ft_ies, 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_CRIT_PROTOCOL_START, 10953 .doit = nl80211_crit_protocol_start, 10954 .policy = nl80211_policy, 10955 .flags = GENL_ADMIN_PERM, 10956 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10957 NL80211_FLAG_NEED_RTNL, 10958 }, 10959 { 10960 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 10961 .doit = nl80211_crit_protocol_stop, 10962 .policy = nl80211_policy, 10963 .flags = GENL_ADMIN_PERM, 10964 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10965 NL80211_FLAG_NEED_RTNL, 10966 }, 10967 { 10968 .cmd = NL80211_CMD_GET_COALESCE, 10969 .doit = nl80211_get_coalesce, 10970 .policy = nl80211_policy, 10971 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10972 NL80211_FLAG_NEED_RTNL, 10973 }, 10974 { 10975 .cmd = NL80211_CMD_SET_COALESCE, 10976 .doit = nl80211_set_coalesce, 10977 .policy = nl80211_policy, 10978 .flags = GENL_ADMIN_PERM, 10979 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10980 NL80211_FLAG_NEED_RTNL, 10981 }, 10982 { 10983 .cmd = NL80211_CMD_CHANNEL_SWITCH, 10984 .doit = nl80211_channel_switch, 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_VENDOR, 10992 .doit = nl80211_vendor_cmd, 10993 .policy = nl80211_policy, 10994 .flags = GENL_ADMIN_PERM, 10995 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10996 NL80211_FLAG_NEED_RTNL, 10997 }, 10998 { 10999 .cmd = NL80211_CMD_SET_QOS_MAP, 11000 .doit = nl80211_set_qos_map, 11001 .policy = nl80211_policy, 11002 .flags = GENL_ADMIN_PERM, 11003 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11004 NL80211_FLAG_NEED_RTNL, 11005 }, 11006 { 11007 .cmd = NL80211_CMD_ADD_TX_TS, 11008 .doit = nl80211_add_tx_ts, 11009 .policy = nl80211_policy, 11010 .flags = GENL_ADMIN_PERM, 11011 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11012 NL80211_FLAG_NEED_RTNL, 11013 }, 11014 { 11015 .cmd = NL80211_CMD_DEL_TX_TS, 11016 .doit = nl80211_del_tx_ts, 11017 .policy = nl80211_policy, 11018 .flags = GENL_ADMIN_PERM, 11019 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11020 NL80211_FLAG_NEED_RTNL, 11021 }, 11022 { 11023 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 11024 .doit = nl80211_tdls_channel_switch, 11025 .policy = nl80211_policy, 11026 .flags = GENL_ADMIN_PERM, 11027 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11028 NL80211_FLAG_NEED_RTNL, 11029 }, 11030 { 11031 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 11032 .doit = nl80211_tdls_cancel_channel_switch, 11033 .policy = nl80211_policy, 11034 .flags = GENL_ADMIN_PERM, 11035 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11036 NL80211_FLAG_NEED_RTNL, 11037 }, 11038 }; 11039 11040 /* notification functions */ 11041 11042 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 11043 enum nl80211_commands cmd) 11044 { 11045 struct sk_buff *msg; 11046 struct nl80211_dump_wiphy_state state = {}; 11047 11048 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 11049 cmd != NL80211_CMD_DEL_WIPHY); 11050 11051 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11052 if (!msg) 11053 return; 11054 11055 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 11056 nlmsg_free(msg); 11057 return; 11058 } 11059 11060 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11061 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11062 } 11063 11064 static int nl80211_add_scan_req(struct sk_buff *msg, 11065 struct cfg80211_registered_device *rdev) 11066 { 11067 struct cfg80211_scan_request *req = rdev->scan_req; 11068 struct nlattr *nest; 11069 int i; 11070 11071 if (WARN_ON(!req)) 11072 return 0; 11073 11074 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11075 if (!nest) 11076 goto nla_put_failure; 11077 for (i = 0; i < req->n_ssids; i++) { 11078 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11079 goto nla_put_failure; 11080 } 11081 nla_nest_end(msg, nest); 11082 11083 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11084 if (!nest) 11085 goto nla_put_failure; 11086 for (i = 0; i < req->n_channels; i++) { 11087 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11088 goto nla_put_failure; 11089 } 11090 nla_nest_end(msg, nest); 11091 11092 if (req->ie && 11093 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11094 goto nla_put_failure; 11095 11096 if (req->flags && 11097 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11098 goto nla_put_failure; 11099 11100 return 0; 11101 nla_put_failure: 11102 return -ENOBUFS; 11103 } 11104 11105 static int nl80211_send_scan_msg(struct sk_buff *msg, 11106 struct cfg80211_registered_device *rdev, 11107 struct wireless_dev *wdev, 11108 u32 portid, u32 seq, int flags, 11109 u32 cmd) 11110 { 11111 void *hdr; 11112 11113 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11114 if (!hdr) 11115 return -1; 11116 11117 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11118 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11119 wdev->netdev->ifindex)) || 11120 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11121 goto nla_put_failure; 11122 11123 /* ignore errors and send incomplete event anyway */ 11124 nl80211_add_scan_req(msg, rdev); 11125 11126 genlmsg_end(msg, hdr); 11127 return 0; 11128 11129 nla_put_failure: 11130 genlmsg_cancel(msg, hdr); 11131 return -EMSGSIZE; 11132 } 11133 11134 static int 11135 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11136 struct cfg80211_registered_device *rdev, 11137 struct net_device *netdev, 11138 u32 portid, u32 seq, int flags, u32 cmd) 11139 { 11140 void *hdr; 11141 11142 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11143 if (!hdr) 11144 return -1; 11145 11146 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11147 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11148 goto nla_put_failure; 11149 11150 genlmsg_end(msg, hdr); 11151 return 0; 11152 11153 nla_put_failure: 11154 genlmsg_cancel(msg, hdr); 11155 return -EMSGSIZE; 11156 } 11157 11158 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11159 struct wireless_dev *wdev) 11160 { 11161 struct sk_buff *msg; 11162 11163 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11164 if (!msg) 11165 return; 11166 11167 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11168 NL80211_CMD_TRIGGER_SCAN) < 0) { 11169 nlmsg_free(msg); 11170 return; 11171 } 11172 11173 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11174 NL80211_MCGRP_SCAN, GFP_KERNEL); 11175 } 11176 11177 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11178 struct wireless_dev *wdev, bool aborted) 11179 { 11180 struct sk_buff *msg; 11181 11182 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11183 if (!msg) 11184 return NULL; 11185 11186 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11187 aborted ? NL80211_CMD_SCAN_ABORTED : 11188 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11189 nlmsg_free(msg); 11190 return NULL; 11191 } 11192 11193 return msg; 11194 } 11195 11196 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11197 struct sk_buff *msg) 11198 { 11199 if (!msg) 11200 return; 11201 11202 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11203 NL80211_MCGRP_SCAN, GFP_KERNEL); 11204 } 11205 11206 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11207 struct net_device *netdev) 11208 { 11209 struct sk_buff *msg; 11210 11211 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11212 if (!msg) 11213 return; 11214 11215 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11216 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11217 nlmsg_free(msg); 11218 return; 11219 } 11220 11221 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11222 NL80211_MCGRP_SCAN, GFP_KERNEL); 11223 } 11224 11225 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11226 struct net_device *netdev, u32 cmd) 11227 { 11228 struct sk_buff *msg; 11229 11230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11231 if (!msg) 11232 return; 11233 11234 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 11235 nlmsg_free(msg); 11236 return; 11237 } 11238 11239 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11240 NL80211_MCGRP_SCAN, GFP_KERNEL); 11241 } 11242 11243 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 11244 struct regulatory_request *request) 11245 { 11246 /* Userspace can always count this one always being set */ 11247 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 11248 goto nla_put_failure; 11249 11250 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 11251 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11252 NL80211_REGDOM_TYPE_WORLD)) 11253 goto nla_put_failure; 11254 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 11255 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11256 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 11257 goto nla_put_failure; 11258 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 11259 request->intersect) { 11260 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11261 NL80211_REGDOM_TYPE_INTERSECTION)) 11262 goto nla_put_failure; 11263 } else { 11264 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11265 NL80211_REGDOM_TYPE_COUNTRY) || 11266 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 11267 request->alpha2)) 11268 goto nla_put_failure; 11269 } 11270 11271 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 11272 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 11273 11274 if (wiphy && 11275 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 11276 goto nla_put_failure; 11277 11278 if (wiphy && 11279 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 11280 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 11281 goto nla_put_failure; 11282 } 11283 11284 return true; 11285 11286 nla_put_failure: 11287 return false; 11288 } 11289 11290 /* 11291 * This can happen on global regulatory changes or device specific settings 11292 * based on custom regulatory domains. 11293 */ 11294 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 11295 struct regulatory_request *request) 11296 { 11297 struct sk_buff *msg; 11298 void *hdr; 11299 11300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11301 if (!msg) 11302 return; 11303 11304 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 11305 if (!hdr) { 11306 nlmsg_free(msg); 11307 return; 11308 } 11309 11310 if (nl80211_reg_change_event_fill(msg, request) == false) 11311 goto nla_put_failure; 11312 11313 genlmsg_end(msg, hdr); 11314 11315 rcu_read_lock(); 11316 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11317 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11318 rcu_read_unlock(); 11319 11320 return; 11321 11322 nla_put_failure: 11323 genlmsg_cancel(msg, hdr); 11324 nlmsg_free(msg); 11325 } 11326 11327 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11328 struct net_device *netdev, 11329 const u8 *buf, size_t len, 11330 enum nl80211_commands cmd, gfp_t gfp, 11331 int uapsd_queues) 11332 { 11333 struct sk_buff *msg; 11334 void *hdr; 11335 11336 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11337 if (!msg) 11338 return; 11339 11340 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11341 if (!hdr) { 11342 nlmsg_free(msg); 11343 return; 11344 } 11345 11346 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11347 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11348 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11349 goto nla_put_failure; 11350 11351 if (uapsd_queues >= 0) { 11352 struct nlattr *nla_wmm = 11353 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11354 if (!nla_wmm) 11355 goto nla_put_failure; 11356 11357 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11358 uapsd_queues)) 11359 goto nla_put_failure; 11360 11361 nla_nest_end(msg, nla_wmm); 11362 } 11363 11364 genlmsg_end(msg, hdr); 11365 11366 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11367 NL80211_MCGRP_MLME, gfp); 11368 return; 11369 11370 nla_put_failure: 11371 genlmsg_cancel(msg, hdr); 11372 nlmsg_free(msg); 11373 } 11374 11375 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11376 struct net_device *netdev, const u8 *buf, 11377 size_t len, gfp_t gfp) 11378 { 11379 nl80211_send_mlme_event(rdev, netdev, buf, len, 11380 NL80211_CMD_AUTHENTICATE, gfp, -1); 11381 } 11382 11383 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11384 struct net_device *netdev, const u8 *buf, 11385 size_t len, gfp_t gfp, int uapsd_queues) 11386 { 11387 nl80211_send_mlme_event(rdev, netdev, buf, len, 11388 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11389 } 11390 11391 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11392 struct net_device *netdev, const u8 *buf, 11393 size_t len, gfp_t gfp) 11394 { 11395 nl80211_send_mlme_event(rdev, netdev, buf, len, 11396 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11397 } 11398 11399 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11400 struct net_device *netdev, const u8 *buf, 11401 size_t len, gfp_t gfp) 11402 { 11403 nl80211_send_mlme_event(rdev, netdev, buf, len, 11404 NL80211_CMD_DISASSOCIATE, gfp, -1); 11405 } 11406 11407 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11408 size_t len) 11409 { 11410 struct wireless_dev *wdev = dev->ieee80211_ptr; 11411 struct wiphy *wiphy = wdev->wiphy; 11412 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11413 const struct ieee80211_mgmt *mgmt = (void *)buf; 11414 u32 cmd; 11415 11416 if (WARN_ON(len < 2)) 11417 return; 11418 11419 if (ieee80211_is_deauth(mgmt->frame_control)) 11420 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11421 else 11422 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11423 11424 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11425 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11426 } 11427 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11428 11429 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11430 struct net_device *netdev, int cmd, 11431 const u8 *addr, gfp_t gfp) 11432 { 11433 struct sk_buff *msg; 11434 void *hdr; 11435 11436 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11437 if (!msg) 11438 return; 11439 11440 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11441 if (!hdr) { 11442 nlmsg_free(msg); 11443 return; 11444 } 11445 11446 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11447 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11448 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11450 goto nla_put_failure; 11451 11452 genlmsg_end(msg, hdr); 11453 11454 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11455 NL80211_MCGRP_MLME, gfp); 11456 return; 11457 11458 nla_put_failure: 11459 genlmsg_cancel(msg, hdr); 11460 nlmsg_free(msg); 11461 } 11462 11463 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11464 struct net_device *netdev, const u8 *addr, 11465 gfp_t gfp) 11466 { 11467 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11468 addr, gfp); 11469 } 11470 11471 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11472 struct net_device *netdev, const u8 *addr, 11473 gfp_t gfp) 11474 { 11475 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11476 addr, gfp); 11477 } 11478 11479 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11480 struct net_device *netdev, const u8 *bssid, 11481 const u8 *req_ie, size_t req_ie_len, 11482 const u8 *resp_ie, size_t resp_ie_len, 11483 u16 status, gfp_t gfp) 11484 { 11485 struct sk_buff *msg; 11486 void *hdr; 11487 11488 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11489 if (!msg) 11490 return; 11491 11492 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11493 if (!hdr) { 11494 nlmsg_free(msg); 11495 return; 11496 } 11497 11498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11499 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11500 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11501 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11502 (req_ie && 11503 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11504 (resp_ie && 11505 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11506 goto nla_put_failure; 11507 11508 genlmsg_end(msg, hdr); 11509 11510 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11511 NL80211_MCGRP_MLME, gfp); 11512 return; 11513 11514 nla_put_failure: 11515 genlmsg_cancel(msg, hdr); 11516 nlmsg_free(msg); 11517 11518 } 11519 11520 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11521 struct net_device *netdev, const u8 *bssid, 11522 const u8 *req_ie, size_t req_ie_len, 11523 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11524 { 11525 struct sk_buff *msg; 11526 void *hdr; 11527 11528 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11529 if (!msg) 11530 return; 11531 11532 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11533 if (!hdr) { 11534 nlmsg_free(msg); 11535 return; 11536 } 11537 11538 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11539 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11540 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11541 (req_ie && 11542 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11543 (resp_ie && 11544 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11545 goto nla_put_failure; 11546 11547 genlmsg_end(msg, hdr); 11548 11549 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11550 NL80211_MCGRP_MLME, gfp); 11551 return; 11552 11553 nla_put_failure: 11554 genlmsg_cancel(msg, hdr); 11555 nlmsg_free(msg); 11556 11557 } 11558 11559 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11560 struct net_device *netdev, u16 reason, 11561 const u8 *ie, size_t ie_len, bool from_ap) 11562 { 11563 struct sk_buff *msg; 11564 void *hdr; 11565 11566 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11567 if (!msg) 11568 return; 11569 11570 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 11571 if (!hdr) { 11572 nlmsg_free(msg); 11573 return; 11574 } 11575 11576 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11577 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11578 (from_ap && reason && 11579 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 11580 (from_ap && 11581 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 11582 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 11583 goto nla_put_failure; 11584 11585 genlmsg_end(msg, hdr); 11586 11587 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11588 NL80211_MCGRP_MLME, GFP_KERNEL); 11589 return; 11590 11591 nla_put_failure: 11592 genlmsg_cancel(msg, hdr); 11593 nlmsg_free(msg); 11594 11595 } 11596 11597 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 11598 struct net_device *netdev, const u8 *bssid, 11599 gfp_t gfp) 11600 { 11601 struct sk_buff *msg; 11602 void *hdr; 11603 11604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11605 if (!msg) 11606 return; 11607 11608 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 11609 if (!hdr) { 11610 nlmsg_free(msg); 11611 return; 11612 } 11613 11614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11616 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11617 goto nla_put_failure; 11618 11619 genlmsg_end(msg, hdr); 11620 11621 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11622 NL80211_MCGRP_MLME, gfp); 11623 return; 11624 11625 nla_put_failure: 11626 genlmsg_cancel(msg, hdr); 11627 nlmsg_free(msg); 11628 } 11629 11630 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 11631 const u8* ie, u8 ie_len, gfp_t gfp) 11632 { 11633 struct wireless_dev *wdev = dev->ieee80211_ptr; 11634 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11635 struct sk_buff *msg; 11636 void *hdr; 11637 11638 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11639 return; 11640 11641 trace_cfg80211_notify_new_peer_candidate(dev, addr); 11642 11643 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11644 if (!msg) 11645 return; 11646 11647 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 11648 if (!hdr) { 11649 nlmsg_free(msg); 11650 return; 11651 } 11652 11653 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11654 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11655 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11656 (ie_len && ie && 11657 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 11658 goto nla_put_failure; 11659 11660 genlmsg_end(msg, hdr); 11661 11662 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11663 NL80211_MCGRP_MLME, gfp); 11664 return; 11665 11666 nla_put_failure: 11667 genlmsg_cancel(msg, hdr); 11668 nlmsg_free(msg); 11669 } 11670 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 11671 11672 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 11673 struct net_device *netdev, const u8 *addr, 11674 enum nl80211_key_type key_type, int key_id, 11675 const u8 *tsc, gfp_t gfp) 11676 { 11677 struct sk_buff *msg; 11678 void *hdr; 11679 11680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11681 if (!msg) 11682 return; 11683 11684 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 11685 if (!hdr) { 11686 nlmsg_free(msg); 11687 return; 11688 } 11689 11690 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11691 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11692 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 11693 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 11694 (key_id != -1 && 11695 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 11696 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 11697 goto nla_put_failure; 11698 11699 genlmsg_end(msg, hdr); 11700 11701 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11702 NL80211_MCGRP_MLME, gfp); 11703 return; 11704 11705 nla_put_failure: 11706 genlmsg_cancel(msg, hdr); 11707 nlmsg_free(msg); 11708 } 11709 11710 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 11711 struct ieee80211_channel *channel_before, 11712 struct ieee80211_channel *channel_after) 11713 { 11714 struct sk_buff *msg; 11715 void *hdr; 11716 struct nlattr *nl_freq; 11717 11718 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 11719 if (!msg) 11720 return; 11721 11722 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 11723 if (!hdr) { 11724 nlmsg_free(msg); 11725 return; 11726 } 11727 11728 /* 11729 * Since we are applying the beacon hint to a wiphy we know its 11730 * wiphy_idx is valid 11731 */ 11732 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 11733 goto nla_put_failure; 11734 11735 /* Before */ 11736 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 11737 if (!nl_freq) 11738 goto nla_put_failure; 11739 if (nl80211_msg_put_channel(msg, channel_before, false)) 11740 goto nla_put_failure; 11741 nla_nest_end(msg, nl_freq); 11742 11743 /* After */ 11744 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 11745 if (!nl_freq) 11746 goto nla_put_failure; 11747 if (nl80211_msg_put_channel(msg, channel_after, false)) 11748 goto nla_put_failure; 11749 nla_nest_end(msg, nl_freq); 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_remain_on_chan_event( 11766 int cmd, struct cfg80211_registered_device *rdev, 11767 struct wireless_dev *wdev, u64 cookie, 11768 struct ieee80211_channel *chan, 11769 unsigned int duration, gfp_t gfp) 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 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11786 wdev->netdev->ifindex)) || 11787 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11788 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 11789 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 11790 NL80211_CHAN_NO_HT) || 11791 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 11792 goto nla_put_failure; 11793 11794 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 11795 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 11796 goto nla_put_failure; 11797 11798 genlmsg_end(msg, hdr); 11799 11800 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11801 NL80211_MCGRP_MLME, gfp); 11802 return; 11803 11804 nla_put_failure: 11805 genlmsg_cancel(msg, hdr); 11806 nlmsg_free(msg); 11807 } 11808 11809 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 11810 struct ieee80211_channel *chan, 11811 unsigned int duration, gfp_t gfp) 11812 { 11813 struct wiphy *wiphy = wdev->wiphy; 11814 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11815 11816 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 11817 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 11818 rdev, wdev, cookie, chan, 11819 duration, gfp); 11820 } 11821 EXPORT_SYMBOL(cfg80211_ready_on_channel); 11822 11823 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 11824 struct ieee80211_channel *chan, 11825 gfp_t gfp) 11826 { 11827 struct wiphy *wiphy = wdev->wiphy; 11828 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11829 11830 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 11831 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11832 rdev, wdev, cookie, chan, 0, gfp); 11833 } 11834 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 11835 11836 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 11837 struct station_info *sinfo, gfp_t gfp) 11838 { 11839 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11840 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11841 struct sk_buff *msg; 11842 11843 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 11844 11845 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11846 if (!msg) 11847 return; 11848 11849 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 11850 rdev, dev, mac_addr, sinfo) < 0) { 11851 nlmsg_free(msg); 11852 return; 11853 } 11854 11855 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11856 NL80211_MCGRP_MLME, gfp); 11857 } 11858 EXPORT_SYMBOL(cfg80211_new_sta); 11859 11860 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 11861 struct station_info *sinfo, gfp_t gfp) 11862 { 11863 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11864 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11865 struct sk_buff *msg; 11866 struct station_info empty_sinfo = {}; 11867 11868 if (!sinfo) 11869 sinfo = &empty_sinfo; 11870 11871 trace_cfg80211_del_sta(dev, mac_addr); 11872 11873 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11874 if (!msg) 11875 return; 11876 11877 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 11878 rdev, dev, mac_addr, sinfo) < 0) { 11879 nlmsg_free(msg); 11880 return; 11881 } 11882 11883 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11884 NL80211_MCGRP_MLME, gfp); 11885 } 11886 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 11887 11888 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 11889 enum nl80211_connect_failed_reason reason, 11890 gfp_t gfp) 11891 { 11892 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11893 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11894 struct sk_buff *msg; 11895 void *hdr; 11896 11897 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11898 if (!msg) 11899 return; 11900 11901 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 11902 if (!hdr) { 11903 nlmsg_free(msg); 11904 return; 11905 } 11906 11907 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11908 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 11909 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 11910 goto nla_put_failure; 11911 11912 genlmsg_end(msg, hdr); 11913 11914 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11915 NL80211_MCGRP_MLME, gfp); 11916 return; 11917 11918 nla_put_failure: 11919 genlmsg_cancel(msg, hdr); 11920 nlmsg_free(msg); 11921 } 11922 EXPORT_SYMBOL(cfg80211_conn_failed); 11923 11924 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 11925 const u8 *addr, gfp_t gfp) 11926 { 11927 struct wireless_dev *wdev = dev->ieee80211_ptr; 11928 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11929 struct sk_buff *msg; 11930 void *hdr; 11931 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 11932 11933 if (!nlportid) 11934 return false; 11935 11936 msg = nlmsg_new(100, gfp); 11937 if (!msg) 11938 return true; 11939 11940 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11941 if (!hdr) { 11942 nlmsg_free(msg); 11943 return true; 11944 } 11945 11946 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11947 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11948 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11949 goto nla_put_failure; 11950 11951 genlmsg_end(msg, hdr); 11952 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11953 return true; 11954 11955 nla_put_failure: 11956 genlmsg_cancel(msg, hdr); 11957 nlmsg_free(msg); 11958 return true; 11959 } 11960 11961 bool cfg80211_rx_spurious_frame(struct net_device *dev, 11962 const u8 *addr, gfp_t gfp) 11963 { 11964 struct wireless_dev *wdev = dev->ieee80211_ptr; 11965 bool ret; 11966 11967 trace_cfg80211_rx_spurious_frame(dev, addr); 11968 11969 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11970 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 11971 trace_cfg80211_return_bool(false); 11972 return false; 11973 } 11974 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 11975 addr, gfp); 11976 trace_cfg80211_return_bool(ret); 11977 return ret; 11978 } 11979 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 11980 11981 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 11982 const u8 *addr, gfp_t gfp) 11983 { 11984 struct wireless_dev *wdev = dev->ieee80211_ptr; 11985 bool ret; 11986 11987 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 11988 11989 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11990 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11991 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 11992 trace_cfg80211_return_bool(false); 11993 return false; 11994 } 11995 ret = __nl80211_unexpected_frame(dev, 11996 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 11997 addr, gfp); 11998 trace_cfg80211_return_bool(ret); 11999 return ret; 12000 } 12001 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 12002 12003 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 12004 struct wireless_dev *wdev, u32 nlportid, 12005 int freq, int sig_dbm, 12006 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 12007 { 12008 struct net_device *netdev = wdev->netdev; 12009 struct sk_buff *msg; 12010 void *hdr; 12011 12012 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12013 if (!msg) 12014 return -ENOMEM; 12015 12016 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12017 if (!hdr) { 12018 nlmsg_free(msg); 12019 return -ENOMEM; 12020 } 12021 12022 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12023 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12024 netdev->ifindex)) || 12025 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12026 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 12027 (sig_dbm && 12028 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12029 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12030 (flags && 12031 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 12032 goto nla_put_failure; 12033 12034 genlmsg_end(msg, hdr); 12035 12036 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12037 12038 nla_put_failure: 12039 genlmsg_cancel(msg, hdr); 12040 nlmsg_free(msg); 12041 return -ENOBUFS; 12042 } 12043 12044 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 12045 const u8 *buf, size_t len, bool ack, gfp_t gfp) 12046 { 12047 struct wiphy *wiphy = wdev->wiphy; 12048 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12049 struct net_device *netdev = wdev->netdev; 12050 struct sk_buff *msg; 12051 void *hdr; 12052 12053 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 12054 12055 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12056 if (!msg) 12057 return; 12058 12059 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12060 if (!hdr) { 12061 nlmsg_free(msg); 12062 return; 12063 } 12064 12065 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12066 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12067 netdev->ifindex)) || 12068 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12069 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12070 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12071 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12072 goto nla_put_failure; 12073 12074 genlmsg_end(msg, hdr); 12075 12076 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12077 NL80211_MCGRP_MLME, gfp); 12078 return; 12079 12080 nla_put_failure: 12081 genlmsg_cancel(msg, hdr); 12082 nlmsg_free(msg); 12083 } 12084 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12085 12086 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12087 const char *mac, gfp_t gfp) 12088 { 12089 struct wireless_dev *wdev = dev->ieee80211_ptr; 12090 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12091 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12092 void **cb; 12093 12094 if (!msg) 12095 return NULL; 12096 12097 cb = (void **)msg->cb; 12098 12099 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12100 if (!cb[0]) { 12101 nlmsg_free(msg); 12102 return NULL; 12103 } 12104 12105 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12106 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12107 goto nla_put_failure; 12108 12109 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12110 goto nla_put_failure; 12111 12112 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12113 if (!cb[1]) 12114 goto nla_put_failure; 12115 12116 cb[2] = rdev; 12117 12118 return msg; 12119 nla_put_failure: 12120 nlmsg_free(msg); 12121 return NULL; 12122 } 12123 12124 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12125 { 12126 void **cb = (void **)msg->cb; 12127 struct cfg80211_registered_device *rdev = cb[2]; 12128 12129 nla_nest_end(msg, cb[1]); 12130 genlmsg_end(msg, cb[0]); 12131 12132 memset(msg->cb, 0, sizeof(msg->cb)); 12133 12134 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12135 NL80211_MCGRP_MLME, gfp); 12136 } 12137 12138 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12139 enum nl80211_cqm_rssi_threshold_event rssi_event, 12140 gfp_t gfp) 12141 { 12142 struct sk_buff *msg; 12143 12144 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12145 12146 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12147 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12148 return; 12149 12150 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12151 if (!msg) 12152 return; 12153 12154 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12155 rssi_event)) 12156 goto nla_put_failure; 12157 12158 cfg80211_send_cqm(msg, gfp); 12159 12160 return; 12161 12162 nla_put_failure: 12163 nlmsg_free(msg); 12164 } 12165 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12166 12167 void cfg80211_cqm_txe_notify(struct net_device *dev, 12168 const u8 *peer, u32 num_packets, 12169 u32 rate, u32 intvl, gfp_t gfp) 12170 { 12171 struct sk_buff *msg; 12172 12173 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12174 if (!msg) 12175 return; 12176 12177 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12178 goto nla_put_failure; 12179 12180 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12181 goto nla_put_failure; 12182 12183 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12184 goto nla_put_failure; 12185 12186 cfg80211_send_cqm(msg, gfp); 12187 return; 12188 12189 nla_put_failure: 12190 nlmsg_free(msg); 12191 } 12192 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12193 12194 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12195 const u8 *peer, u32 num_packets, gfp_t gfp) 12196 { 12197 struct sk_buff *msg; 12198 12199 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12200 12201 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12202 if (!msg) 12203 return; 12204 12205 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12206 goto nla_put_failure; 12207 12208 cfg80211_send_cqm(msg, gfp); 12209 return; 12210 12211 nla_put_failure: 12212 nlmsg_free(msg); 12213 } 12214 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12215 12216 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12217 { 12218 struct sk_buff *msg; 12219 12220 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12221 if (!msg) 12222 return; 12223 12224 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12225 goto nla_put_failure; 12226 12227 cfg80211_send_cqm(msg, gfp); 12228 return; 12229 12230 nla_put_failure: 12231 nlmsg_free(msg); 12232 } 12233 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 12234 12235 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 12236 struct net_device *netdev, const u8 *bssid, 12237 const u8 *replay_ctr, gfp_t gfp) 12238 { 12239 struct sk_buff *msg; 12240 struct nlattr *rekey_attr; 12241 void *hdr; 12242 12243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12244 if (!msg) 12245 return; 12246 12247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 12248 if (!hdr) { 12249 nlmsg_free(msg); 12250 return; 12251 } 12252 12253 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12254 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12255 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12256 goto nla_put_failure; 12257 12258 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 12259 if (!rekey_attr) 12260 goto nla_put_failure; 12261 12262 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 12263 NL80211_REPLAY_CTR_LEN, replay_ctr)) 12264 goto nla_put_failure; 12265 12266 nla_nest_end(msg, rekey_attr); 12267 12268 genlmsg_end(msg, hdr); 12269 12270 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12271 NL80211_MCGRP_MLME, gfp); 12272 return; 12273 12274 nla_put_failure: 12275 genlmsg_cancel(msg, hdr); 12276 nlmsg_free(msg); 12277 } 12278 12279 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 12280 const u8 *replay_ctr, gfp_t gfp) 12281 { 12282 struct wireless_dev *wdev = dev->ieee80211_ptr; 12283 struct wiphy *wiphy = wdev->wiphy; 12284 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12285 12286 trace_cfg80211_gtk_rekey_notify(dev, bssid); 12287 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 12288 } 12289 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 12290 12291 static void 12292 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 12293 struct net_device *netdev, int index, 12294 const u8 *bssid, bool preauth, gfp_t gfp) 12295 { 12296 struct sk_buff *msg; 12297 struct nlattr *attr; 12298 void *hdr; 12299 12300 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12301 if (!msg) 12302 return; 12303 12304 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 12305 if (!hdr) { 12306 nlmsg_free(msg); 12307 return; 12308 } 12309 12310 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12311 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12312 goto nla_put_failure; 12313 12314 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 12315 if (!attr) 12316 goto nla_put_failure; 12317 12318 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12319 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12320 (preauth && 12321 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12322 goto nla_put_failure; 12323 12324 nla_nest_end(msg, attr); 12325 12326 genlmsg_end(msg, hdr); 12327 12328 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12329 NL80211_MCGRP_MLME, gfp); 12330 return; 12331 12332 nla_put_failure: 12333 genlmsg_cancel(msg, hdr); 12334 nlmsg_free(msg); 12335 } 12336 12337 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12338 const u8 *bssid, bool preauth, gfp_t gfp) 12339 { 12340 struct wireless_dev *wdev = dev->ieee80211_ptr; 12341 struct wiphy *wiphy = wdev->wiphy; 12342 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12343 12344 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12345 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12346 } 12347 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12348 12349 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12350 struct net_device *netdev, 12351 struct cfg80211_chan_def *chandef, 12352 gfp_t gfp, 12353 enum nl80211_commands notif, 12354 u8 count) 12355 { 12356 struct sk_buff *msg; 12357 void *hdr; 12358 12359 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12360 if (!msg) 12361 return; 12362 12363 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12364 if (!hdr) { 12365 nlmsg_free(msg); 12366 return; 12367 } 12368 12369 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12370 goto nla_put_failure; 12371 12372 if (nl80211_send_chandef(msg, chandef)) 12373 goto nla_put_failure; 12374 12375 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12376 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12377 goto nla_put_failure; 12378 12379 genlmsg_end(msg, hdr); 12380 12381 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12382 NL80211_MCGRP_MLME, gfp); 12383 return; 12384 12385 nla_put_failure: 12386 genlmsg_cancel(msg, hdr); 12387 nlmsg_free(msg); 12388 } 12389 12390 void cfg80211_ch_switch_notify(struct net_device *dev, 12391 struct cfg80211_chan_def *chandef) 12392 { 12393 struct wireless_dev *wdev = dev->ieee80211_ptr; 12394 struct wiphy *wiphy = wdev->wiphy; 12395 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12396 12397 ASSERT_WDEV_LOCK(wdev); 12398 12399 trace_cfg80211_ch_switch_notify(dev, chandef); 12400 12401 wdev->chandef = *chandef; 12402 wdev->preset_chandef = *chandef; 12403 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12404 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12405 } 12406 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12407 12408 void cfg80211_ch_switch_started_notify(struct net_device *dev, 12409 struct cfg80211_chan_def *chandef, 12410 u8 count) 12411 { 12412 struct wireless_dev *wdev = dev->ieee80211_ptr; 12413 struct wiphy *wiphy = wdev->wiphy; 12414 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12415 12416 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12417 12418 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12419 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12420 } 12421 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12422 12423 void 12424 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12425 const struct cfg80211_chan_def *chandef, 12426 enum nl80211_radar_event event, 12427 struct net_device *netdev, gfp_t gfp) 12428 { 12429 struct sk_buff *msg; 12430 void *hdr; 12431 12432 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12433 if (!msg) 12434 return; 12435 12436 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12437 if (!hdr) { 12438 nlmsg_free(msg); 12439 return; 12440 } 12441 12442 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12443 goto nla_put_failure; 12444 12445 /* NOP and radar events don't need a netdev parameter */ 12446 if (netdev) { 12447 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12448 12449 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12450 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12451 goto nla_put_failure; 12452 } 12453 12454 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12455 goto nla_put_failure; 12456 12457 if (nl80211_send_chandef(msg, chandef)) 12458 goto nla_put_failure; 12459 12460 genlmsg_end(msg, hdr); 12461 12462 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12463 NL80211_MCGRP_MLME, gfp); 12464 return; 12465 12466 nla_put_failure: 12467 genlmsg_cancel(msg, hdr); 12468 nlmsg_free(msg); 12469 } 12470 12471 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12472 u64 cookie, bool acked, gfp_t gfp) 12473 { 12474 struct wireless_dev *wdev = dev->ieee80211_ptr; 12475 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12476 struct sk_buff *msg; 12477 void *hdr; 12478 12479 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12480 12481 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12482 12483 if (!msg) 12484 return; 12485 12486 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12487 if (!hdr) { 12488 nlmsg_free(msg); 12489 return; 12490 } 12491 12492 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12493 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12494 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12495 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12496 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12497 goto nla_put_failure; 12498 12499 genlmsg_end(msg, hdr); 12500 12501 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12502 NL80211_MCGRP_MLME, gfp); 12503 return; 12504 12505 nla_put_failure: 12506 genlmsg_cancel(msg, hdr); 12507 nlmsg_free(msg); 12508 } 12509 EXPORT_SYMBOL(cfg80211_probe_status); 12510 12511 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12512 const u8 *frame, size_t len, 12513 int freq, int sig_dbm) 12514 { 12515 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12516 struct sk_buff *msg; 12517 void *hdr; 12518 struct cfg80211_beacon_registration *reg; 12519 12520 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12521 12522 spin_lock_bh(&rdev->beacon_registrations_lock); 12523 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12524 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12525 if (!msg) { 12526 spin_unlock_bh(&rdev->beacon_registrations_lock); 12527 return; 12528 } 12529 12530 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12531 if (!hdr) 12532 goto nla_put_failure; 12533 12534 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12535 (freq && 12536 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12537 (sig_dbm && 12538 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12539 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12540 goto nla_put_failure; 12541 12542 genlmsg_end(msg, hdr); 12543 12544 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12545 } 12546 spin_unlock_bh(&rdev->beacon_registrations_lock); 12547 return; 12548 12549 nla_put_failure: 12550 spin_unlock_bh(&rdev->beacon_registrations_lock); 12551 if (hdr) 12552 genlmsg_cancel(msg, hdr); 12553 nlmsg_free(msg); 12554 } 12555 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12556 12557 #ifdef CONFIG_PM 12558 static int cfg80211_net_detect_results(struct sk_buff *msg, 12559 struct cfg80211_wowlan_wakeup *wakeup) 12560 { 12561 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 12562 struct nlattr *nl_results, *nl_match, *nl_freqs; 12563 int i, j; 12564 12565 nl_results = nla_nest_start( 12566 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 12567 if (!nl_results) 12568 return -EMSGSIZE; 12569 12570 for (i = 0; i < nd->n_matches; i++) { 12571 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 12572 12573 nl_match = nla_nest_start(msg, i); 12574 if (!nl_match) 12575 break; 12576 12577 /* The SSID attribute is optional in nl80211, but for 12578 * simplicity reasons it's always present in the 12579 * cfg80211 structure. If a driver can't pass the 12580 * SSID, that needs to be changed. A zero length SSID 12581 * is still a valid SSID (wildcard), so it cannot be 12582 * used for this purpose. 12583 */ 12584 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 12585 match->ssid.ssid)) { 12586 nla_nest_cancel(msg, nl_match); 12587 goto out; 12588 } 12589 12590 if (match->n_channels) { 12591 nl_freqs = nla_nest_start( 12592 msg, NL80211_ATTR_SCAN_FREQUENCIES); 12593 if (!nl_freqs) { 12594 nla_nest_cancel(msg, nl_match); 12595 goto out; 12596 } 12597 12598 for (j = 0; j < match->n_channels; j++) { 12599 if (nla_put_u32(msg, j, match->channels[j])) { 12600 nla_nest_cancel(msg, nl_freqs); 12601 nla_nest_cancel(msg, nl_match); 12602 goto out; 12603 } 12604 } 12605 12606 nla_nest_end(msg, nl_freqs); 12607 } 12608 12609 nla_nest_end(msg, nl_match); 12610 } 12611 12612 out: 12613 nla_nest_end(msg, nl_results); 12614 return 0; 12615 } 12616 12617 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 12618 struct cfg80211_wowlan_wakeup *wakeup, 12619 gfp_t gfp) 12620 { 12621 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12622 struct sk_buff *msg; 12623 void *hdr; 12624 int size = 200; 12625 12626 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 12627 12628 if (wakeup) 12629 size += wakeup->packet_present_len; 12630 12631 msg = nlmsg_new(size, gfp); 12632 if (!msg) 12633 return; 12634 12635 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 12636 if (!hdr) 12637 goto free_msg; 12638 12639 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12640 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12641 goto free_msg; 12642 12643 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12644 wdev->netdev->ifindex)) 12645 goto free_msg; 12646 12647 if (wakeup) { 12648 struct nlattr *reasons; 12649 12650 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 12651 if (!reasons) 12652 goto free_msg; 12653 12654 if (wakeup->disconnect && 12655 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 12656 goto free_msg; 12657 if (wakeup->magic_pkt && 12658 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 12659 goto free_msg; 12660 if (wakeup->gtk_rekey_failure && 12661 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 12662 goto free_msg; 12663 if (wakeup->eap_identity_req && 12664 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 12665 goto free_msg; 12666 if (wakeup->four_way_handshake && 12667 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 12668 goto free_msg; 12669 if (wakeup->rfkill_release && 12670 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 12671 goto free_msg; 12672 12673 if (wakeup->pattern_idx >= 0 && 12674 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 12675 wakeup->pattern_idx)) 12676 goto free_msg; 12677 12678 if (wakeup->tcp_match && 12679 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 12680 goto free_msg; 12681 12682 if (wakeup->tcp_connlost && 12683 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 12684 goto free_msg; 12685 12686 if (wakeup->tcp_nomoretokens && 12687 nla_put_flag(msg, 12688 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 12689 goto free_msg; 12690 12691 if (wakeup->packet) { 12692 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 12693 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 12694 12695 if (!wakeup->packet_80211) { 12696 pkt_attr = 12697 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 12698 len_attr = 12699 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 12700 } 12701 12702 if (wakeup->packet_len && 12703 nla_put_u32(msg, len_attr, wakeup->packet_len)) 12704 goto free_msg; 12705 12706 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 12707 wakeup->packet)) 12708 goto free_msg; 12709 } 12710 12711 if (wakeup->net_detect && 12712 cfg80211_net_detect_results(msg, wakeup)) 12713 goto free_msg; 12714 12715 nla_nest_end(msg, reasons); 12716 } 12717 12718 genlmsg_end(msg, hdr); 12719 12720 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12721 NL80211_MCGRP_MLME, gfp); 12722 return; 12723 12724 free_msg: 12725 nlmsg_free(msg); 12726 } 12727 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 12728 #endif 12729 12730 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 12731 enum nl80211_tdls_operation oper, 12732 u16 reason_code, gfp_t gfp) 12733 { 12734 struct wireless_dev *wdev = dev->ieee80211_ptr; 12735 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12736 struct sk_buff *msg; 12737 void *hdr; 12738 12739 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 12740 reason_code); 12741 12742 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12743 if (!msg) 12744 return; 12745 12746 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 12747 if (!hdr) { 12748 nlmsg_free(msg); 12749 return; 12750 } 12751 12752 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12753 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12754 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 12755 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 12756 (reason_code > 0 && 12757 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 12758 goto nla_put_failure; 12759 12760 genlmsg_end(msg, hdr); 12761 12762 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12763 NL80211_MCGRP_MLME, gfp); 12764 return; 12765 12766 nla_put_failure: 12767 genlmsg_cancel(msg, hdr); 12768 nlmsg_free(msg); 12769 } 12770 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 12771 12772 static int nl80211_netlink_notify(struct notifier_block * nb, 12773 unsigned long state, 12774 void *_notify) 12775 { 12776 struct netlink_notify *notify = _notify; 12777 struct cfg80211_registered_device *rdev; 12778 struct wireless_dev *wdev; 12779 struct cfg80211_beacon_registration *reg, *tmp; 12780 12781 if (state != NETLINK_URELEASE) 12782 return NOTIFY_DONE; 12783 12784 rcu_read_lock(); 12785 12786 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 12787 bool schedule_destroy_work = false; 12788 bool schedule_scan_stop = false; 12789 struct cfg80211_sched_scan_request *sched_scan_req = 12790 rcu_dereference(rdev->sched_scan_req); 12791 12792 if (sched_scan_req && notify->portid && 12793 sched_scan_req->owner_nlportid == notify->portid) 12794 schedule_scan_stop = true; 12795 12796 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 12797 cfg80211_mlme_unregister_socket(wdev, notify->portid); 12798 12799 if (wdev->owner_nlportid == notify->portid) 12800 schedule_destroy_work = true; 12801 } 12802 12803 spin_lock_bh(&rdev->beacon_registrations_lock); 12804 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 12805 list) { 12806 if (reg->nlportid == notify->portid) { 12807 list_del(®->list); 12808 kfree(reg); 12809 break; 12810 } 12811 } 12812 spin_unlock_bh(&rdev->beacon_registrations_lock); 12813 12814 if (schedule_destroy_work) { 12815 struct cfg80211_iface_destroy *destroy; 12816 12817 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 12818 if (destroy) { 12819 destroy->nlportid = notify->portid; 12820 spin_lock(&rdev->destroy_list_lock); 12821 list_add(&destroy->list, &rdev->destroy_list); 12822 spin_unlock(&rdev->destroy_list_lock); 12823 schedule_work(&rdev->destroy_work); 12824 } 12825 } else if (schedule_scan_stop) { 12826 sched_scan_req->owner_nlportid = 0; 12827 12828 if (rdev->ops->sched_scan_stop && 12829 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 12830 schedule_work(&rdev->sched_scan_stop_wk); 12831 } 12832 } 12833 12834 rcu_read_unlock(); 12835 12836 /* 12837 * It is possible that the user space process that is controlling the 12838 * indoor setting disappeared, so notify the regulatory core. 12839 */ 12840 regulatory_netlink_notify(notify->portid); 12841 return NOTIFY_OK; 12842 } 12843 12844 static struct notifier_block nl80211_netlink_notifier = { 12845 .notifier_call = nl80211_netlink_notify, 12846 }; 12847 12848 void cfg80211_ft_event(struct net_device *netdev, 12849 struct cfg80211_ft_event_params *ft_event) 12850 { 12851 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 12852 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12853 struct sk_buff *msg; 12854 void *hdr; 12855 12856 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 12857 12858 if (!ft_event->target_ap) 12859 return; 12860 12861 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12862 if (!msg) 12863 return; 12864 12865 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 12866 if (!hdr) 12867 goto out; 12868 12869 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12870 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12871 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 12872 goto out; 12873 12874 if (ft_event->ies && 12875 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 12876 goto out; 12877 if (ft_event->ric_ies && 12878 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 12879 ft_event->ric_ies)) 12880 goto out; 12881 12882 genlmsg_end(msg, hdr); 12883 12884 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12885 NL80211_MCGRP_MLME, GFP_KERNEL); 12886 return; 12887 out: 12888 nlmsg_free(msg); 12889 } 12890 EXPORT_SYMBOL(cfg80211_ft_event); 12891 12892 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 12893 { 12894 struct cfg80211_registered_device *rdev; 12895 struct sk_buff *msg; 12896 void *hdr; 12897 u32 nlportid; 12898 12899 rdev = wiphy_to_rdev(wdev->wiphy); 12900 if (!rdev->crit_proto_nlportid) 12901 return; 12902 12903 nlportid = rdev->crit_proto_nlportid; 12904 rdev->crit_proto_nlportid = 0; 12905 12906 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12907 if (!msg) 12908 return; 12909 12910 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 12911 if (!hdr) 12912 goto nla_put_failure; 12913 12914 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12915 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12916 goto nla_put_failure; 12917 12918 genlmsg_end(msg, hdr); 12919 12920 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12921 return; 12922 12923 nla_put_failure: 12924 if (hdr) 12925 genlmsg_cancel(msg, hdr); 12926 nlmsg_free(msg); 12927 12928 } 12929 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 12930 12931 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 12932 { 12933 struct wiphy *wiphy = wdev->wiphy; 12934 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12935 struct sk_buff *msg; 12936 void *hdr; 12937 12938 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12939 if (!msg) 12940 return; 12941 12942 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 12943 if (!hdr) 12944 goto out; 12945 12946 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12947 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 12948 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12949 goto out; 12950 12951 genlmsg_end(msg, hdr); 12952 12953 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 12954 NL80211_MCGRP_MLME, GFP_KERNEL); 12955 return; 12956 out: 12957 nlmsg_free(msg); 12958 } 12959 12960 /* initialisation/exit functions */ 12961 12962 int nl80211_init(void) 12963 { 12964 int err; 12965 12966 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 12967 nl80211_mcgrps); 12968 if (err) 12969 return err; 12970 12971 err = netlink_register_notifier(&nl80211_netlink_notifier); 12972 if (err) 12973 goto err_out; 12974 12975 return 0; 12976 err_out: 12977 genl_unregister_family(&nl80211_fam); 12978 return err; 12979 } 12980 12981 void nl80211_exit(void) 12982 { 12983 netlink_unregister_notifier(&nl80211_netlink_notifier); 12984 genl_unregister_family(&nl80211_fam); 12985 } 12986