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 }; 403 404 /* policy for the key attributes */ 405 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 406 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 407 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 408 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 409 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 410 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 411 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 412 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 413 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 414 }; 415 416 /* policy for the key default flags */ 417 static const struct nla_policy 418 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 419 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 420 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 421 }; 422 423 /* policy for WoWLAN attributes */ 424 static const struct nla_policy 425 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 426 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 427 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 428 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 429 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 430 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 431 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 432 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 433 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 434 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 435 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 436 }; 437 438 static const struct nla_policy 439 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 440 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 441 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 442 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 443 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 444 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 445 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 447 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 448 }, 449 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 450 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 451 }, 452 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 453 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 454 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 455 }; 456 457 /* policy for coalesce rule attributes */ 458 static const struct nla_policy 459 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 460 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 461 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 462 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 463 }; 464 465 /* policy for GTK rekey offload attributes */ 466 static const struct nla_policy 467 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 468 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 469 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 470 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 471 }; 472 473 static const struct nla_policy 474 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 475 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 476 .len = IEEE80211_MAX_SSID_LEN }, 477 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 478 }; 479 480 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 481 struct netlink_callback *cb, 482 struct cfg80211_registered_device **rdev, 483 struct wireless_dev **wdev) 484 { 485 int err; 486 487 rtnl_lock(); 488 489 if (!cb->args[0]) { 490 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 491 nl80211_fam.attrbuf, nl80211_fam.maxattr, 492 nl80211_policy); 493 if (err) 494 goto out_unlock; 495 496 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 497 nl80211_fam.attrbuf); 498 if (IS_ERR(*wdev)) { 499 err = PTR_ERR(*wdev); 500 goto out_unlock; 501 } 502 *rdev = wiphy_to_rdev((*wdev)->wiphy); 503 /* 0 is the first index - add 1 to parse only once */ 504 cb->args[0] = (*rdev)->wiphy_idx + 1; 505 cb->args[1] = (*wdev)->identifier; 506 } else { 507 /* subtract the 1 again here */ 508 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 509 struct wireless_dev *tmp; 510 511 if (!wiphy) { 512 err = -ENODEV; 513 goto out_unlock; 514 } 515 *rdev = wiphy_to_rdev(wiphy); 516 *wdev = NULL; 517 518 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 519 if (tmp->identifier == cb->args[1]) { 520 *wdev = tmp; 521 break; 522 } 523 } 524 525 if (!*wdev) { 526 err = -ENODEV; 527 goto out_unlock; 528 } 529 } 530 531 return 0; 532 out_unlock: 533 rtnl_unlock(); 534 return err; 535 } 536 537 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 538 { 539 rtnl_unlock(); 540 } 541 542 /* IE validation */ 543 static bool is_valid_ie_attr(const struct nlattr *attr) 544 { 545 const u8 *pos; 546 int len; 547 548 if (!attr) 549 return true; 550 551 pos = nla_data(attr); 552 len = nla_len(attr); 553 554 while (len) { 555 u8 elemlen; 556 557 if (len < 2) 558 return false; 559 len -= 2; 560 561 elemlen = pos[1]; 562 if (elemlen > len) 563 return false; 564 565 len -= elemlen; 566 pos += 2 + elemlen; 567 } 568 569 return true; 570 } 571 572 /* message building helper */ 573 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 574 int flags, u8 cmd) 575 { 576 /* since there is no private header just add the generic one */ 577 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 578 } 579 580 static int nl80211_msg_put_channel(struct sk_buff *msg, 581 struct ieee80211_channel *chan, 582 bool large) 583 { 584 /* Some channels must be completely excluded from the 585 * list to protect old user-space tools from breaking 586 */ 587 if (!large && chan->flags & 588 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 589 return 0; 590 591 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 592 chan->center_freq)) 593 goto nla_put_failure; 594 595 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 596 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 597 goto nla_put_failure; 598 if (chan->flags & IEEE80211_CHAN_NO_IR) { 599 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 600 goto nla_put_failure; 601 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 602 goto nla_put_failure; 603 } 604 if (chan->flags & IEEE80211_CHAN_RADAR) { 605 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 606 goto nla_put_failure; 607 if (large) { 608 u32 time; 609 610 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 611 612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 613 chan->dfs_state)) 614 goto nla_put_failure; 615 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 616 time)) 617 goto nla_put_failure; 618 if (nla_put_u32(msg, 619 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 620 chan->dfs_cac_ms)) 621 goto nla_put_failure; 622 } 623 } 624 625 if (large) { 626 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 628 goto nla_put_failure; 629 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 631 goto nla_put_failure; 632 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 634 goto nla_put_failure; 635 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 637 goto nla_put_failure; 638 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 640 goto nla_put_failure; 641 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) && 642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT)) 643 goto nla_put_failure; 644 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 646 goto nla_put_failure; 647 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 648 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 649 goto nla_put_failure; 650 } 651 652 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 653 DBM_TO_MBM(chan->max_power))) 654 goto nla_put_failure; 655 656 return 0; 657 658 nla_put_failure: 659 return -ENOBUFS; 660 } 661 662 /* netlink command implementations */ 663 664 struct key_parse { 665 struct key_params p; 666 int idx; 667 int type; 668 bool def, defmgmt; 669 bool def_uni, def_multi; 670 }; 671 672 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 673 { 674 struct nlattr *tb[NL80211_KEY_MAX + 1]; 675 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 676 nl80211_key_policy); 677 if (err) 678 return err; 679 680 k->def = !!tb[NL80211_KEY_DEFAULT]; 681 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 682 683 if (k->def) { 684 k->def_uni = true; 685 k->def_multi = true; 686 } 687 if (k->defmgmt) 688 k->def_multi = true; 689 690 if (tb[NL80211_KEY_IDX]) 691 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 692 693 if (tb[NL80211_KEY_DATA]) { 694 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 695 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 696 } 697 698 if (tb[NL80211_KEY_SEQ]) { 699 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 700 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 701 } 702 703 if (tb[NL80211_KEY_CIPHER]) 704 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 705 706 if (tb[NL80211_KEY_TYPE]) { 707 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 708 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 709 return -EINVAL; 710 } 711 712 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 713 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 714 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 715 tb[NL80211_KEY_DEFAULT_TYPES], 716 nl80211_key_default_policy); 717 if (err) 718 return err; 719 720 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 721 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 722 } 723 724 return 0; 725 } 726 727 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 728 { 729 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 730 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 731 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 732 } 733 734 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 735 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 736 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 737 } 738 739 if (info->attrs[NL80211_ATTR_KEY_IDX]) 740 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 741 742 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 743 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 744 745 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 746 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 747 748 if (k->def) { 749 k->def_uni = true; 750 k->def_multi = true; 751 } 752 if (k->defmgmt) 753 k->def_multi = true; 754 755 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 756 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 757 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 758 return -EINVAL; 759 } 760 761 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 762 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 763 int err = nla_parse_nested( 764 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 765 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 766 nl80211_key_default_policy); 767 if (err) 768 return err; 769 770 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 771 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 772 } 773 774 return 0; 775 } 776 777 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 778 { 779 int err; 780 781 memset(k, 0, sizeof(*k)); 782 k->idx = -1; 783 k->type = -1; 784 785 if (info->attrs[NL80211_ATTR_KEY]) 786 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 787 else 788 err = nl80211_parse_key_old(info, k); 789 790 if (err) 791 return err; 792 793 if (k->def && k->defmgmt) 794 return -EINVAL; 795 796 if (k->defmgmt) { 797 if (k->def_uni || !k->def_multi) 798 return -EINVAL; 799 } 800 801 if (k->idx != -1) { 802 if (k->defmgmt) { 803 if (k->idx < 4 || k->idx > 5) 804 return -EINVAL; 805 } else if (k->def) { 806 if (k->idx < 0 || k->idx > 3) 807 return -EINVAL; 808 } else { 809 if (k->idx < 0 || k->idx > 5) 810 return -EINVAL; 811 } 812 } 813 814 return 0; 815 } 816 817 static struct cfg80211_cached_keys * 818 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 819 struct nlattr *keys, bool *no_ht) 820 { 821 struct key_parse parse; 822 struct nlattr *key; 823 struct cfg80211_cached_keys *result; 824 int rem, err, def = 0; 825 826 result = kzalloc(sizeof(*result), GFP_KERNEL); 827 if (!result) 828 return ERR_PTR(-ENOMEM); 829 830 result->def = -1; 831 result->defmgmt = -1; 832 833 nla_for_each_nested(key, keys, rem) { 834 memset(&parse, 0, sizeof(parse)); 835 parse.idx = -1; 836 837 err = nl80211_parse_key_new(key, &parse); 838 if (err) 839 goto error; 840 err = -EINVAL; 841 if (!parse.p.key) 842 goto error; 843 if (parse.idx < 0 || parse.idx > 4) 844 goto error; 845 if (parse.def) { 846 if (def) 847 goto error; 848 def = 1; 849 result->def = parse.idx; 850 if (!parse.def_uni || !parse.def_multi) 851 goto error; 852 } else if (parse.defmgmt) 853 goto error; 854 err = cfg80211_validate_key_settings(rdev, &parse.p, 855 parse.idx, false, NULL); 856 if (err) 857 goto error; 858 result->params[parse.idx].cipher = parse.p.cipher; 859 result->params[parse.idx].key_len = parse.p.key_len; 860 result->params[parse.idx].key = result->data[parse.idx]; 861 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 862 863 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 864 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 865 if (no_ht) 866 *no_ht = true; 867 } 868 } 869 870 return result; 871 error: 872 kfree(result); 873 return ERR_PTR(err); 874 } 875 876 static int nl80211_key_allowed(struct wireless_dev *wdev) 877 { 878 ASSERT_WDEV_LOCK(wdev); 879 880 switch (wdev->iftype) { 881 case NL80211_IFTYPE_AP: 882 case NL80211_IFTYPE_AP_VLAN: 883 case NL80211_IFTYPE_P2P_GO: 884 case NL80211_IFTYPE_MESH_POINT: 885 break; 886 case NL80211_IFTYPE_ADHOC: 887 case NL80211_IFTYPE_STATION: 888 case NL80211_IFTYPE_P2P_CLIENT: 889 if (!wdev->current_bss) 890 return -ENOLINK; 891 break; 892 case NL80211_IFTYPE_UNSPECIFIED: 893 case NL80211_IFTYPE_OCB: 894 case NL80211_IFTYPE_MONITOR: 895 case NL80211_IFTYPE_P2P_DEVICE: 896 case NL80211_IFTYPE_WDS: 897 case NUM_NL80211_IFTYPES: 898 return -EINVAL; 899 } 900 901 return 0; 902 } 903 904 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 905 struct nlattr *tb) 906 { 907 struct ieee80211_channel *chan; 908 909 if (tb == NULL) 910 return NULL; 911 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 912 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 913 return NULL; 914 return chan; 915 } 916 917 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 918 { 919 struct nlattr *nl_modes = nla_nest_start(msg, attr); 920 int i; 921 922 if (!nl_modes) 923 goto nla_put_failure; 924 925 i = 0; 926 while (ifmodes) { 927 if ((ifmodes & 1) && nla_put_flag(msg, i)) 928 goto nla_put_failure; 929 ifmodes >>= 1; 930 i++; 931 } 932 933 nla_nest_end(msg, nl_modes); 934 return 0; 935 936 nla_put_failure: 937 return -ENOBUFS; 938 } 939 940 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 941 struct sk_buff *msg, 942 bool large) 943 { 944 struct nlattr *nl_combis; 945 int i, j; 946 947 nl_combis = nla_nest_start(msg, 948 NL80211_ATTR_INTERFACE_COMBINATIONS); 949 if (!nl_combis) 950 goto nla_put_failure; 951 952 for (i = 0; i < wiphy->n_iface_combinations; i++) { 953 const struct ieee80211_iface_combination *c; 954 struct nlattr *nl_combi, *nl_limits; 955 956 c = &wiphy->iface_combinations[i]; 957 958 nl_combi = nla_nest_start(msg, i + 1); 959 if (!nl_combi) 960 goto nla_put_failure; 961 962 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 963 if (!nl_limits) 964 goto nla_put_failure; 965 966 for (j = 0; j < c->n_limits; j++) { 967 struct nlattr *nl_limit; 968 969 nl_limit = nla_nest_start(msg, j + 1); 970 if (!nl_limit) 971 goto nla_put_failure; 972 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 973 c->limits[j].max)) 974 goto nla_put_failure; 975 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 976 c->limits[j].types)) 977 goto nla_put_failure; 978 nla_nest_end(msg, nl_limit); 979 } 980 981 nla_nest_end(msg, nl_limits); 982 983 if (c->beacon_int_infra_match && 984 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 985 goto nla_put_failure; 986 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 987 c->num_different_channels) || 988 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 989 c->max_interfaces)) 990 goto nla_put_failure; 991 if (large && 992 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 993 c->radar_detect_widths) || 994 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 995 c->radar_detect_regions))) 996 goto nla_put_failure; 997 998 nla_nest_end(msg, nl_combi); 999 } 1000 1001 nla_nest_end(msg, nl_combis); 1002 1003 return 0; 1004 nla_put_failure: 1005 return -ENOBUFS; 1006 } 1007 1008 #ifdef CONFIG_PM 1009 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1010 struct sk_buff *msg) 1011 { 1012 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1013 struct nlattr *nl_tcp; 1014 1015 if (!tcp) 1016 return 0; 1017 1018 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1019 if (!nl_tcp) 1020 return -ENOBUFS; 1021 1022 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1023 tcp->data_payload_max)) 1024 return -ENOBUFS; 1025 1026 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1027 tcp->data_payload_max)) 1028 return -ENOBUFS; 1029 1030 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1031 return -ENOBUFS; 1032 1033 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1034 sizeof(*tcp->tok), tcp->tok)) 1035 return -ENOBUFS; 1036 1037 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1038 tcp->data_interval_max)) 1039 return -ENOBUFS; 1040 1041 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1042 tcp->wake_payload_max)) 1043 return -ENOBUFS; 1044 1045 nla_nest_end(msg, nl_tcp); 1046 return 0; 1047 } 1048 1049 static int nl80211_send_wowlan(struct sk_buff *msg, 1050 struct cfg80211_registered_device *rdev, 1051 bool large) 1052 { 1053 struct nlattr *nl_wowlan; 1054 1055 if (!rdev->wiphy.wowlan) 1056 return 0; 1057 1058 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1059 if (!nl_wowlan) 1060 return -ENOBUFS; 1061 1062 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1063 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1064 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1065 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1066 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1067 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1068 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1069 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1070 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1071 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1072 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1073 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1074 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1075 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1076 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1077 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1078 return -ENOBUFS; 1079 1080 if (rdev->wiphy.wowlan->n_patterns) { 1081 struct nl80211_pattern_support pat = { 1082 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1083 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1084 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1085 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1086 }; 1087 1088 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1089 sizeof(pat), &pat)) 1090 return -ENOBUFS; 1091 } 1092 1093 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1094 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1095 rdev->wiphy.wowlan->max_nd_match_sets)) 1096 return -ENOBUFS; 1097 1098 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1099 return -ENOBUFS; 1100 1101 /* TODO: send wowlan net detect */ 1102 1103 nla_nest_end(msg, nl_wowlan); 1104 1105 return 0; 1106 } 1107 #endif 1108 1109 static int nl80211_send_coalesce(struct sk_buff *msg, 1110 struct cfg80211_registered_device *rdev) 1111 { 1112 struct nl80211_coalesce_rule_support rule; 1113 1114 if (!rdev->wiphy.coalesce) 1115 return 0; 1116 1117 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1118 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1119 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1120 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1121 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1122 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1123 1124 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1125 return -ENOBUFS; 1126 1127 return 0; 1128 } 1129 1130 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1131 struct ieee80211_supported_band *sband) 1132 { 1133 struct nlattr *nl_rates, *nl_rate; 1134 struct ieee80211_rate *rate; 1135 int i; 1136 1137 /* add HT info */ 1138 if (sband->ht_cap.ht_supported && 1139 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1140 sizeof(sband->ht_cap.mcs), 1141 &sband->ht_cap.mcs) || 1142 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1143 sband->ht_cap.cap) || 1144 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1145 sband->ht_cap.ampdu_factor) || 1146 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1147 sband->ht_cap.ampdu_density))) 1148 return -ENOBUFS; 1149 1150 /* add VHT info */ 1151 if (sband->vht_cap.vht_supported && 1152 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1153 sizeof(sband->vht_cap.vht_mcs), 1154 &sband->vht_cap.vht_mcs) || 1155 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1156 sband->vht_cap.cap))) 1157 return -ENOBUFS; 1158 1159 /* add bitrates */ 1160 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1161 if (!nl_rates) 1162 return -ENOBUFS; 1163 1164 for (i = 0; i < sband->n_bitrates; i++) { 1165 nl_rate = nla_nest_start(msg, i); 1166 if (!nl_rate) 1167 return -ENOBUFS; 1168 1169 rate = &sband->bitrates[i]; 1170 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1171 rate->bitrate)) 1172 return -ENOBUFS; 1173 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1174 nla_put_flag(msg, 1175 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1176 return -ENOBUFS; 1177 1178 nla_nest_end(msg, nl_rate); 1179 } 1180 1181 nla_nest_end(msg, nl_rates); 1182 1183 return 0; 1184 } 1185 1186 static int 1187 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1188 const struct ieee80211_txrx_stypes *mgmt_stypes) 1189 { 1190 u16 stypes; 1191 struct nlattr *nl_ftypes, *nl_ifs; 1192 enum nl80211_iftype ift; 1193 int i; 1194 1195 if (!mgmt_stypes) 1196 return 0; 1197 1198 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1199 if (!nl_ifs) 1200 return -ENOBUFS; 1201 1202 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1203 nl_ftypes = nla_nest_start(msg, ift); 1204 if (!nl_ftypes) 1205 return -ENOBUFS; 1206 i = 0; 1207 stypes = mgmt_stypes[ift].tx; 1208 while (stypes) { 1209 if ((stypes & 1) && 1210 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1211 (i << 4) | IEEE80211_FTYPE_MGMT)) 1212 return -ENOBUFS; 1213 stypes >>= 1; 1214 i++; 1215 } 1216 nla_nest_end(msg, nl_ftypes); 1217 } 1218 1219 nla_nest_end(msg, nl_ifs); 1220 1221 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1222 if (!nl_ifs) 1223 return -ENOBUFS; 1224 1225 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1226 nl_ftypes = nla_nest_start(msg, ift); 1227 if (!nl_ftypes) 1228 return -ENOBUFS; 1229 i = 0; 1230 stypes = mgmt_stypes[ift].rx; 1231 while (stypes) { 1232 if ((stypes & 1) && 1233 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1234 (i << 4) | IEEE80211_FTYPE_MGMT)) 1235 return -ENOBUFS; 1236 stypes >>= 1; 1237 i++; 1238 } 1239 nla_nest_end(msg, nl_ftypes); 1240 } 1241 nla_nest_end(msg, nl_ifs); 1242 1243 return 0; 1244 } 1245 1246 struct nl80211_dump_wiphy_state { 1247 s64 filter_wiphy; 1248 long start; 1249 long split_start, band_start, chan_start; 1250 bool split; 1251 }; 1252 1253 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1254 enum nl80211_commands cmd, 1255 struct sk_buff *msg, u32 portid, u32 seq, 1256 int flags, struct nl80211_dump_wiphy_state *state) 1257 { 1258 void *hdr; 1259 struct nlattr *nl_bands, *nl_band; 1260 struct nlattr *nl_freqs, *nl_freq; 1261 struct nlattr *nl_cmds; 1262 enum ieee80211_band band; 1263 struct ieee80211_channel *chan; 1264 int i; 1265 const struct ieee80211_txrx_stypes *mgmt_stypes = 1266 rdev->wiphy.mgmt_stypes; 1267 u32 features; 1268 1269 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1270 if (!hdr) 1271 return -ENOBUFS; 1272 1273 if (WARN_ON(!state)) 1274 return -EINVAL; 1275 1276 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1277 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1278 wiphy_name(&rdev->wiphy)) || 1279 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1280 cfg80211_rdev_list_generation)) 1281 goto nla_put_failure; 1282 1283 if (cmd != NL80211_CMD_NEW_WIPHY) 1284 goto finish; 1285 1286 switch (state->split_start) { 1287 case 0: 1288 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1289 rdev->wiphy.retry_short) || 1290 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1291 rdev->wiphy.retry_long) || 1292 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1293 rdev->wiphy.frag_threshold) || 1294 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1295 rdev->wiphy.rts_threshold) || 1296 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1297 rdev->wiphy.coverage_class) || 1298 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1299 rdev->wiphy.max_scan_ssids) || 1300 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1301 rdev->wiphy.max_sched_scan_ssids) || 1302 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1303 rdev->wiphy.max_scan_ie_len) || 1304 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1305 rdev->wiphy.max_sched_scan_ie_len) || 1306 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1307 rdev->wiphy.max_match_sets)) 1308 goto nla_put_failure; 1309 1310 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1311 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1312 goto nla_put_failure; 1313 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1314 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1315 goto nla_put_failure; 1316 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1317 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1318 goto nla_put_failure; 1319 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1320 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1321 goto nla_put_failure; 1322 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1323 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1324 goto nla_put_failure; 1325 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1326 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1327 goto nla_put_failure; 1328 state->split_start++; 1329 if (state->split) 1330 break; 1331 case 1: 1332 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1333 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1334 rdev->wiphy.cipher_suites)) 1335 goto nla_put_failure; 1336 1337 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1338 rdev->wiphy.max_num_pmkids)) 1339 goto nla_put_failure; 1340 1341 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1342 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1343 goto nla_put_failure; 1344 1345 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1346 rdev->wiphy.available_antennas_tx) || 1347 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1348 rdev->wiphy.available_antennas_rx)) 1349 goto nla_put_failure; 1350 1351 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1352 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1353 rdev->wiphy.probe_resp_offload)) 1354 goto nla_put_failure; 1355 1356 if ((rdev->wiphy.available_antennas_tx || 1357 rdev->wiphy.available_antennas_rx) && 1358 rdev->ops->get_antenna) { 1359 u32 tx_ant = 0, rx_ant = 0; 1360 int res; 1361 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1362 if (!res) { 1363 if (nla_put_u32(msg, 1364 NL80211_ATTR_WIPHY_ANTENNA_TX, 1365 tx_ant) || 1366 nla_put_u32(msg, 1367 NL80211_ATTR_WIPHY_ANTENNA_RX, 1368 rx_ant)) 1369 goto nla_put_failure; 1370 } 1371 } 1372 1373 state->split_start++; 1374 if (state->split) 1375 break; 1376 case 2: 1377 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1378 rdev->wiphy.interface_modes)) 1379 goto nla_put_failure; 1380 state->split_start++; 1381 if (state->split) 1382 break; 1383 case 3: 1384 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1385 if (!nl_bands) 1386 goto nla_put_failure; 1387 1388 for (band = state->band_start; 1389 band < IEEE80211_NUM_BANDS; band++) { 1390 struct ieee80211_supported_band *sband; 1391 1392 sband = rdev->wiphy.bands[band]; 1393 1394 if (!sband) 1395 continue; 1396 1397 nl_band = nla_nest_start(msg, band); 1398 if (!nl_band) 1399 goto nla_put_failure; 1400 1401 switch (state->chan_start) { 1402 case 0: 1403 if (nl80211_send_band_rateinfo(msg, sband)) 1404 goto nla_put_failure; 1405 state->chan_start++; 1406 if (state->split) 1407 break; 1408 default: 1409 /* add frequencies */ 1410 nl_freqs = nla_nest_start( 1411 msg, NL80211_BAND_ATTR_FREQS); 1412 if (!nl_freqs) 1413 goto nla_put_failure; 1414 1415 for (i = state->chan_start - 1; 1416 i < sband->n_channels; 1417 i++) { 1418 nl_freq = nla_nest_start(msg, i); 1419 if (!nl_freq) 1420 goto nla_put_failure; 1421 1422 chan = &sband->channels[i]; 1423 1424 if (nl80211_msg_put_channel( 1425 msg, chan, 1426 state->split)) 1427 goto nla_put_failure; 1428 1429 nla_nest_end(msg, nl_freq); 1430 if (state->split) 1431 break; 1432 } 1433 if (i < sband->n_channels) 1434 state->chan_start = i + 2; 1435 else 1436 state->chan_start = 0; 1437 nla_nest_end(msg, nl_freqs); 1438 } 1439 1440 nla_nest_end(msg, nl_band); 1441 1442 if (state->split) { 1443 /* start again here */ 1444 if (state->chan_start) 1445 band--; 1446 break; 1447 } 1448 } 1449 nla_nest_end(msg, nl_bands); 1450 1451 if (band < IEEE80211_NUM_BANDS) 1452 state->band_start = band + 1; 1453 else 1454 state->band_start = 0; 1455 1456 /* if bands & channels are done, continue outside */ 1457 if (state->band_start == 0 && state->chan_start == 0) 1458 state->split_start++; 1459 if (state->split) 1460 break; 1461 case 4: 1462 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1463 if (!nl_cmds) 1464 goto nla_put_failure; 1465 1466 i = 0; 1467 #define CMD(op, n) \ 1468 do { \ 1469 if (rdev->ops->op) { \ 1470 i++; \ 1471 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1472 goto nla_put_failure; \ 1473 } \ 1474 } while (0) 1475 1476 CMD(add_virtual_intf, NEW_INTERFACE); 1477 CMD(change_virtual_intf, SET_INTERFACE); 1478 CMD(add_key, NEW_KEY); 1479 CMD(start_ap, START_AP); 1480 CMD(add_station, NEW_STATION); 1481 CMD(add_mpath, NEW_MPATH); 1482 CMD(update_mesh_config, SET_MESH_CONFIG); 1483 CMD(change_bss, SET_BSS); 1484 CMD(auth, AUTHENTICATE); 1485 CMD(assoc, ASSOCIATE); 1486 CMD(deauth, DEAUTHENTICATE); 1487 CMD(disassoc, DISASSOCIATE); 1488 CMD(join_ibss, JOIN_IBSS); 1489 CMD(join_mesh, JOIN_MESH); 1490 CMD(set_pmksa, SET_PMKSA); 1491 CMD(del_pmksa, DEL_PMKSA); 1492 CMD(flush_pmksa, FLUSH_PMKSA); 1493 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1494 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1495 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1496 CMD(mgmt_tx, FRAME); 1497 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1498 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1499 i++; 1500 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1501 goto nla_put_failure; 1502 } 1503 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1504 rdev->ops->join_mesh) { 1505 i++; 1506 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1507 goto nla_put_failure; 1508 } 1509 CMD(set_wds_peer, SET_WDS_PEER); 1510 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1511 CMD(tdls_mgmt, TDLS_MGMT); 1512 CMD(tdls_oper, TDLS_OPER); 1513 } 1514 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1515 CMD(sched_scan_start, START_SCHED_SCAN); 1516 CMD(probe_client, PROBE_CLIENT); 1517 CMD(set_noack_map, SET_NOACK_MAP); 1518 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1519 i++; 1520 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1521 goto nla_put_failure; 1522 } 1523 CMD(start_p2p_device, START_P2P_DEVICE); 1524 CMD(set_mcast_rate, SET_MCAST_RATE); 1525 #ifdef CONFIG_NL80211_TESTMODE 1526 CMD(testmode_cmd, TESTMODE); 1527 #endif 1528 if (state->split) { 1529 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1530 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1531 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1532 CMD(channel_switch, CHANNEL_SWITCH); 1533 CMD(set_qos_map, SET_QOS_MAP); 1534 if (rdev->wiphy.features & 1535 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1536 CMD(add_tx_ts, ADD_TX_TS); 1537 } 1538 /* add into the if now */ 1539 #undef CMD 1540 1541 if (rdev->ops->connect || rdev->ops->auth) { 1542 i++; 1543 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1544 goto nla_put_failure; 1545 } 1546 1547 if (rdev->ops->disconnect || rdev->ops->deauth) { 1548 i++; 1549 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1550 goto nla_put_failure; 1551 } 1552 1553 nla_nest_end(msg, nl_cmds); 1554 state->split_start++; 1555 if (state->split) 1556 break; 1557 case 5: 1558 if (rdev->ops->remain_on_channel && 1559 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1560 nla_put_u32(msg, 1561 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1562 rdev->wiphy.max_remain_on_channel_duration)) 1563 goto nla_put_failure; 1564 1565 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1566 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1567 goto nla_put_failure; 1568 1569 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1570 goto nla_put_failure; 1571 state->split_start++; 1572 if (state->split) 1573 break; 1574 case 6: 1575 #ifdef CONFIG_PM 1576 if (nl80211_send_wowlan(msg, rdev, state->split)) 1577 goto nla_put_failure; 1578 state->split_start++; 1579 if (state->split) 1580 break; 1581 #else 1582 state->split_start++; 1583 #endif 1584 case 7: 1585 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1586 rdev->wiphy.software_iftypes)) 1587 goto nla_put_failure; 1588 1589 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1590 state->split)) 1591 goto nla_put_failure; 1592 1593 state->split_start++; 1594 if (state->split) 1595 break; 1596 case 8: 1597 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1598 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1599 rdev->wiphy.ap_sme_capa)) 1600 goto nla_put_failure; 1601 1602 features = rdev->wiphy.features; 1603 /* 1604 * We can only add the per-channel limit information if the 1605 * dump is split, otherwise it makes it too big. Therefore 1606 * only advertise it in that case. 1607 */ 1608 if (state->split) 1609 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1610 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1611 goto nla_put_failure; 1612 1613 if (rdev->wiphy.ht_capa_mod_mask && 1614 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1615 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1616 rdev->wiphy.ht_capa_mod_mask)) 1617 goto nla_put_failure; 1618 1619 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1620 rdev->wiphy.max_acl_mac_addrs && 1621 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1622 rdev->wiphy.max_acl_mac_addrs)) 1623 goto nla_put_failure; 1624 1625 /* 1626 * Any information below this point is only available to 1627 * applications that can deal with it being split. This 1628 * helps ensure that newly added capabilities don't break 1629 * older tools by overrunning their buffers. 1630 * 1631 * We still increment split_start so that in the split 1632 * case we'll continue with more data in the next round, 1633 * but break unconditionally so unsplit data stops here. 1634 */ 1635 state->split_start++; 1636 break; 1637 case 9: 1638 if (rdev->wiphy.extended_capabilities && 1639 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1640 rdev->wiphy.extended_capabilities_len, 1641 rdev->wiphy.extended_capabilities) || 1642 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1643 rdev->wiphy.extended_capabilities_len, 1644 rdev->wiphy.extended_capabilities_mask))) 1645 goto nla_put_failure; 1646 1647 if (rdev->wiphy.vht_capa_mod_mask && 1648 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1649 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1650 rdev->wiphy.vht_capa_mod_mask)) 1651 goto nla_put_failure; 1652 1653 state->split_start++; 1654 break; 1655 case 10: 1656 if (nl80211_send_coalesce(msg, rdev)) 1657 goto nla_put_failure; 1658 1659 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1660 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1661 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1662 goto nla_put_failure; 1663 1664 if (rdev->wiphy.max_ap_assoc_sta && 1665 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1666 rdev->wiphy.max_ap_assoc_sta)) 1667 goto nla_put_failure; 1668 1669 state->split_start++; 1670 break; 1671 case 11: 1672 if (rdev->wiphy.n_vendor_commands) { 1673 const struct nl80211_vendor_cmd_info *info; 1674 struct nlattr *nested; 1675 1676 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1677 if (!nested) 1678 goto nla_put_failure; 1679 1680 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1681 info = &rdev->wiphy.vendor_commands[i].info; 1682 if (nla_put(msg, i + 1, sizeof(*info), info)) 1683 goto nla_put_failure; 1684 } 1685 nla_nest_end(msg, nested); 1686 } 1687 1688 if (rdev->wiphy.n_vendor_events) { 1689 const struct nl80211_vendor_cmd_info *info; 1690 struct nlattr *nested; 1691 1692 nested = nla_nest_start(msg, 1693 NL80211_ATTR_VENDOR_EVENTS); 1694 if (!nested) 1695 goto nla_put_failure; 1696 1697 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1698 info = &rdev->wiphy.vendor_events[i]; 1699 if (nla_put(msg, i + 1, sizeof(*info), info)) 1700 goto nla_put_failure; 1701 } 1702 nla_nest_end(msg, nested); 1703 } 1704 state->split_start++; 1705 break; 1706 case 12: 1707 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1708 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1709 rdev->wiphy.max_num_csa_counters)) 1710 goto nla_put_failure; 1711 1712 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1713 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1714 goto nla_put_failure; 1715 1716 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1717 sizeof(rdev->wiphy.ext_features), 1718 rdev->wiphy.ext_features)) 1719 goto nla_put_failure; 1720 1721 /* done */ 1722 state->split_start = 0; 1723 break; 1724 } 1725 finish: 1726 genlmsg_end(msg, hdr); 1727 return 0; 1728 1729 nla_put_failure: 1730 genlmsg_cancel(msg, hdr); 1731 return -EMSGSIZE; 1732 } 1733 1734 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1735 struct netlink_callback *cb, 1736 struct nl80211_dump_wiphy_state *state) 1737 { 1738 struct nlattr **tb = nl80211_fam.attrbuf; 1739 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1740 tb, nl80211_fam.maxattr, nl80211_policy); 1741 /* ignore parse errors for backward compatibility */ 1742 if (ret) 1743 return 0; 1744 1745 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1746 if (tb[NL80211_ATTR_WIPHY]) 1747 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1748 if (tb[NL80211_ATTR_WDEV]) 1749 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1750 if (tb[NL80211_ATTR_IFINDEX]) { 1751 struct net_device *netdev; 1752 struct cfg80211_registered_device *rdev; 1753 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1754 1755 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1756 if (!netdev) 1757 return -ENODEV; 1758 if (netdev->ieee80211_ptr) { 1759 rdev = wiphy_to_rdev( 1760 netdev->ieee80211_ptr->wiphy); 1761 state->filter_wiphy = rdev->wiphy_idx; 1762 } 1763 } 1764 1765 return 0; 1766 } 1767 1768 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1769 { 1770 int idx = 0, ret; 1771 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1772 struct cfg80211_registered_device *rdev; 1773 1774 rtnl_lock(); 1775 if (!state) { 1776 state = kzalloc(sizeof(*state), GFP_KERNEL); 1777 if (!state) { 1778 rtnl_unlock(); 1779 return -ENOMEM; 1780 } 1781 state->filter_wiphy = -1; 1782 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1783 if (ret) { 1784 kfree(state); 1785 rtnl_unlock(); 1786 return ret; 1787 } 1788 cb->args[0] = (long)state; 1789 } 1790 1791 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1792 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1793 continue; 1794 if (++idx <= state->start) 1795 continue; 1796 if (state->filter_wiphy != -1 && 1797 state->filter_wiphy != rdev->wiphy_idx) 1798 continue; 1799 /* attempt to fit multiple wiphy data chunks into the skb */ 1800 do { 1801 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1802 skb, 1803 NETLINK_CB(cb->skb).portid, 1804 cb->nlh->nlmsg_seq, 1805 NLM_F_MULTI, state); 1806 if (ret < 0) { 1807 /* 1808 * If sending the wiphy data didn't fit (ENOBUFS 1809 * or EMSGSIZE returned), this SKB is still 1810 * empty (so it's not too big because another 1811 * wiphy dataset is already in the skb) and 1812 * we've not tried to adjust the dump allocation 1813 * yet ... then adjust the alloc size to be 1814 * bigger, and return 1 but with the empty skb. 1815 * This results in an empty message being RX'ed 1816 * in userspace, but that is ignored. 1817 * 1818 * We can then retry with the larger buffer. 1819 */ 1820 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1821 !skb->len && !state->split && 1822 cb->min_dump_alloc < 4096) { 1823 cb->min_dump_alloc = 4096; 1824 state->split_start = 0; 1825 rtnl_unlock(); 1826 return 1; 1827 } 1828 idx--; 1829 break; 1830 } 1831 } while (state->split_start > 0); 1832 break; 1833 } 1834 rtnl_unlock(); 1835 1836 state->start = idx; 1837 1838 return skb->len; 1839 } 1840 1841 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1842 { 1843 kfree((void *)cb->args[0]); 1844 return 0; 1845 } 1846 1847 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1848 { 1849 struct sk_buff *msg; 1850 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1851 struct nl80211_dump_wiphy_state state = {}; 1852 1853 msg = nlmsg_new(4096, GFP_KERNEL); 1854 if (!msg) 1855 return -ENOMEM; 1856 1857 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1858 info->snd_portid, info->snd_seq, 0, 1859 &state) < 0) { 1860 nlmsg_free(msg); 1861 return -ENOBUFS; 1862 } 1863 1864 return genlmsg_reply(msg, info); 1865 } 1866 1867 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1868 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1869 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1870 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1871 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1872 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1873 }; 1874 1875 static int parse_txq_params(struct nlattr *tb[], 1876 struct ieee80211_txq_params *txq_params) 1877 { 1878 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1879 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1880 !tb[NL80211_TXQ_ATTR_AIFS]) 1881 return -EINVAL; 1882 1883 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1884 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1885 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1886 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1887 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1888 1889 if (txq_params->ac >= NL80211_NUM_ACS) 1890 return -EINVAL; 1891 1892 return 0; 1893 } 1894 1895 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1896 { 1897 /* 1898 * You can only set the channel explicitly for WDS interfaces, 1899 * all others have their channel managed via their respective 1900 * "establish a connection" command (connect, join, ...) 1901 * 1902 * For AP/GO and mesh mode, the channel can be set with the 1903 * channel userspace API, but is only stored and passed to the 1904 * low-level driver when the AP starts or the mesh is joined. 1905 * This is for backward compatibility, userspace can also give 1906 * the channel in the start-ap or join-mesh commands instead. 1907 * 1908 * Monitors are special as they are normally slaved to 1909 * whatever else is going on, so they have their own special 1910 * operation to set the monitor channel if possible. 1911 */ 1912 return !wdev || 1913 wdev->iftype == NL80211_IFTYPE_AP || 1914 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1915 wdev->iftype == NL80211_IFTYPE_MONITOR || 1916 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1917 } 1918 1919 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1920 struct genl_info *info, 1921 struct cfg80211_chan_def *chandef) 1922 { 1923 u32 control_freq; 1924 1925 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1926 return -EINVAL; 1927 1928 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1929 1930 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1931 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1932 chandef->center_freq1 = control_freq; 1933 chandef->center_freq2 = 0; 1934 1935 /* Primary channel not allowed */ 1936 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1937 return -EINVAL; 1938 1939 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1940 enum nl80211_channel_type chantype; 1941 1942 chantype = nla_get_u32( 1943 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1944 1945 switch (chantype) { 1946 case NL80211_CHAN_NO_HT: 1947 case NL80211_CHAN_HT20: 1948 case NL80211_CHAN_HT40PLUS: 1949 case NL80211_CHAN_HT40MINUS: 1950 cfg80211_chandef_create(chandef, chandef->chan, 1951 chantype); 1952 break; 1953 default: 1954 return -EINVAL; 1955 } 1956 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1957 chandef->width = 1958 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1959 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1960 chandef->center_freq1 = 1961 nla_get_u32( 1962 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1963 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1964 chandef->center_freq2 = 1965 nla_get_u32( 1966 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1967 } 1968 1969 if (!cfg80211_chandef_valid(chandef)) 1970 return -EINVAL; 1971 1972 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1973 IEEE80211_CHAN_DISABLED)) 1974 return -EINVAL; 1975 1976 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1977 chandef->width == NL80211_CHAN_WIDTH_10) && 1978 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1979 return -EINVAL; 1980 1981 return 0; 1982 } 1983 1984 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1985 struct net_device *dev, 1986 struct genl_info *info) 1987 { 1988 struct cfg80211_chan_def chandef; 1989 int result; 1990 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1991 struct wireless_dev *wdev = NULL; 1992 1993 if (dev) 1994 wdev = dev->ieee80211_ptr; 1995 if (!nl80211_can_set_dev_channel(wdev)) 1996 return -EOPNOTSUPP; 1997 if (wdev) 1998 iftype = wdev->iftype; 1999 2000 result = nl80211_parse_chandef(rdev, info, &chandef); 2001 if (result) 2002 return result; 2003 2004 switch (iftype) { 2005 case NL80211_IFTYPE_AP: 2006 case NL80211_IFTYPE_P2P_GO: 2007 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) { 2008 result = -EINVAL; 2009 break; 2010 } 2011 if (wdev->beacon_interval) { 2012 if (!dev || !rdev->ops->set_ap_chanwidth || 2013 !(rdev->wiphy.features & 2014 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2015 result = -EBUSY; 2016 break; 2017 } 2018 2019 /* Only allow dynamic channel width changes */ 2020 if (chandef.chan != wdev->preset_chandef.chan) { 2021 result = -EBUSY; 2022 break; 2023 } 2024 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2025 if (result) 2026 break; 2027 } 2028 wdev->preset_chandef = chandef; 2029 result = 0; 2030 break; 2031 case NL80211_IFTYPE_MESH_POINT: 2032 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2033 break; 2034 case NL80211_IFTYPE_MONITOR: 2035 result = cfg80211_set_monitor_channel(rdev, &chandef); 2036 break; 2037 default: 2038 result = -EINVAL; 2039 } 2040 2041 return result; 2042 } 2043 2044 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2045 { 2046 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2047 struct net_device *netdev = info->user_ptr[1]; 2048 2049 return __nl80211_set_channel(rdev, netdev, info); 2050 } 2051 2052 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2053 { 2054 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2055 struct net_device *dev = info->user_ptr[1]; 2056 struct wireless_dev *wdev = dev->ieee80211_ptr; 2057 const u8 *bssid; 2058 2059 if (!info->attrs[NL80211_ATTR_MAC]) 2060 return -EINVAL; 2061 2062 if (netif_running(dev)) 2063 return -EBUSY; 2064 2065 if (!rdev->ops->set_wds_peer) 2066 return -EOPNOTSUPP; 2067 2068 if (wdev->iftype != NL80211_IFTYPE_WDS) 2069 return -EOPNOTSUPP; 2070 2071 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2072 return rdev_set_wds_peer(rdev, dev, bssid); 2073 } 2074 2075 2076 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2077 { 2078 struct cfg80211_registered_device *rdev; 2079 struct net_device *netdev = NULL; 2080 struct wireless_dev *wdev; 2081 int result = 0, rem_txq_params = 0; 2082 struct nlattr *nl_txq_params; 2083 u32 changed; 2084 u8 retry_short = 0, retry_long = 0; 2085 u32 frag_threshold = 0, rts_threshold = 0; 2086 u8 coverage_class = 0; 2087 2088 ASSERT_RTNL(); 2089 2090 /* 2091 * Try to find the wiphy and netdev. Normally this 2092 * function shouldn't need the netdev, but this is 2093 * done for backward compatibility -- previously 2094 * setting the channel was done per wiphy, but now 2095 * it is per netdev. Previous userland like hostapd 2096 * also passed a netdev to set_wiphy, so that it is 2097 * possible to let that go to the right netdev! 2098 */ 2099 2100 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2101 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2102 2103 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2104 if (netdev && netdev->ieee80211_ptr) 2105 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2106 else 2107 netdev = NULL; 2108 } 2109 2110 if (!netdev) { 2111 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2112 info->attrs); 2113 if (IS_ERR(rdev)) 2114 return PTR_ERR(rdev); 2115 wdev = NULL; 2116 netdev = NULL; 2117 result = 0; 2118 } else 2119 wdev = netdev->ieee80211_ptr; 2120 2121 /* 2122 * end workaround code, by now the rdev is available 2123 * and locked, and wdev may or may not be NULL. 2124 */ 2125 2126 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2127 result = cfg80211_dev_rename( 2128 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2129 2130 if (result) 2131 return result; 2132 2133 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2134 struct ieee80211_txq_params txq_params; 2135 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2136 2137 if (!rdev->ops->set_txq_params) 2138 return -EOPNOTSUPP; 2139 2140 if (!netdev) 2141 return -EINVAL; 2142 2143 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2144 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2145 return -EINVAL; 2146 2147 if (!netif_running(netdev)) 2148 return -ENETDOWN; 2149 2150 nla_for_each_nested(nl_txq_params, 2151 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2152 rem_txq_params) { 2153 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2154 nla_data(nl_txq_params), 2155 nla_len(nl_txq_params), 2156 txq_params_policy); 2157 if (result) 2158 return result; 2159 result = parse_txq_params(tb, &txq_params); 2160 if (result) 2161 return result; 2162 2163 result = rdev_set_txq_params(rdev, netdev, 2164 &txq_params); 2165 if (result) 2166 return result; 2167 } 2168 } 2169 2170 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2171 result = __nl80211_set_channel( 2172 rdev, 2173 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2174 info); 2175 if (result) 2176 return result; 2177 } 2178 2179 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2180 struct wireless_dev *txp_wdev = wdev; 2181 enum nl80211_tx_power_setting type; 2182 int idx, mbm = 0; 2183 2184 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2185 txp_wdev = NULL; 2186 2187 if (!rdev->ops->set_tx_power) 2188 return -EOPNOTSUPP; 2189 2190 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2191 type = nla_get_u32(info->attrs[idx]); 2192 2193 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2194 (type != NL80211_TX_POWER_AUTOMATIC)) 2195 return -EINVAL; 2196 2197 if (type != NL80211_TX_POWER_AUTOMATIC) { 2198 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2199 mbm = nla_get_u32(info->attrs[idx]); 2200 } 2201 2202 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2203 if (result) 2204 return result; 2205 } 2206 2207 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2208 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2209 u32 tx_ant, rx_ant; 2210 if ((!rdev->wiphy.available_antennas_tx && 2211 !rdev->wiphy.available_antennas_rx) || 2212 !rdev->ops->set_antenna) 2213 return -EOPNOTSUPP; 2214 2215 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2216 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2217 2218 /* reject antenna configurations which don't match the 2219 * available antenna masks, except for the "all" mask */ 2220 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2221 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2222 return -EINVAL; 2223 2224 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2225 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2226 2227 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2228 if (result) 2229 return result; 2230 } 2231 2232 changed = 0; 2233 2234 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2235 retry_short = nla_get_u8( 2236 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2237 if (retry_short == 0) 2238 return -EINVAL; 2239 2240 changed |= WIPHY_PARAM_RETRY_SHORT; 2241 } 2242 2243 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2244 retry_long = nla_get_u8( 2245 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2246 if (retry_long == 0) 2247 return -EINVAL; 2248 2249 changed |= WIPHY_PARAM_RETRY_LONG; 2250 } 2251 2252 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2253 frag_threshold = nla_get_u32( 2254 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2255 if (frag_threshold < 256) 2256 return -EINVAL; 2257 2258 if (frag_threshold != (u32) -1) { 2259 /* 2260 * Fragments (apart from the last one) are required to 2261 * have even length. Make the fragmentation code 2262 * simpler by stripping LSB should someone try to use 2263 * odd threshold value. 2264 */ 2265 frag_threshold &= ~0x1; 2266 } 2267 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2268 } 2269 2270 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2271 rts_threshold = nla_get_u32( 2272 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2273 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2274 } 2275 2276 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2277 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2278 return -EINVAL; 2279 2280 coverage_class = nla_get_u8( 2281 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2282 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2283 } 2284 2285 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2286 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2287 return -EOPNOTSUPP; 2288 2289 changed |= WIPHY_PARAM_DYN_ACK; 2290 } 2291 2292 if (changed) { 2293 u8 old_retry_short, old_retry_long; 2294 u32 old_frag_threshold, old_rts_threshold; 2295 u8 old_coverage_class; 2296 2297 if (!rdev->ops->set_wiphy_params) 2298 return -EOPNOTSUPP; 2299 2300 old_retry_short = rdev->wiphy.retry_short; 2301 old_retry_long = rdev->wiphy.retry_long; 2302 old_frag_threshold = rdev->wiphy.frag_threshold; 2303 old_rts_threshold = rdev->wiphy.rts_threshold; 2304 old_coverage_class = rdev->wiphy.coverage_class; 2305 2306 if (changed & WIPHY_PARAM_RETRY_SHORT) 2307 rdev->wiphy.retry_short = retry_short; 2308 if (changed & WIPHY_PARAM_RETRY_LONG) 2309 rdev->wiphy.retry_long = retry_long; 2310 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2311 rdev->wiphy.frag_threshold = frag_threshold; 2312 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2313 rdev->wiphy.rts_threshold = rts_threshold; 2314 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2315 rdev->wiphy.coverage_class = coverage_class; 2316 2317 result = rdev_set_wiphy_params(rdev, changed); 2318 if (result) { 2319 rdev->wiphy.retry_short = old_retry_short; 2320 rdev->wiphy.retry_long = old_retry_long; 2321 rdev->wiphy.frag_threshold = old_frag_threshold; 2322 rdev->wiphy.rts_threshold = old_rts_threshold; 2323 rdev->wiphy.coverage_class = old_coverage_class; 2324 } 2325 } 2326 return 0; 2327 } 2328 2329 static inline u64 wdev_id(struct wireless_dev *wdev) 2330 { 2331 return (u64)wdev->identifier | 2332 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2333 } 2334 2335 static int nl80211_send_chandef(struct sk_buff *msg, 2336 const struct cfg80211_chan_def *chandef) 2337 { 2338 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2339 return -EINVAL; 2340 2341 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2342 chandef->chan->center_freq)) 2343 return -ENOBUFS; 2344 switch (chandef->width) { 2345 case NL80211_CHAN_WIDTH_20_NOHT: 2346 case NL80211_CHAN_WIDTH_20: 2347 case NL80211_CHAN_WIDTH_40: 2348 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2349 cfg80211_get_chandef_type(chandef))) 2350 return -ENOBUFS; 2351 break; 2352 default: 2353 break; 2354 } 2355 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2356 return -ENOBUFS; 2357 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2358 return -ENOBUFS; 2359 if (chandef->center_freq2 && 2360 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2361 return -ENOBUFS; 2362 return 0; 2363 } 2364 2365 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2366 struct cfg80211_registered_device *rdev, 2367 struct wireless_dev *wdev, bool removal) 2368 { 2369 struct net_device *dev = wdev->netdev; 2370 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2371 void *hdr; 2372 2373 if (removal) 2374 cmd = NL80211_CMD_DEL_INTERFACE; 2375 2376 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2377 if (!hdr) 2378 return -1; 2379 2380 if (dev && 2381 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2382 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2383 goto nla_put_failure; 2384 2385 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2386 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2387 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2388 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2389 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2390 rdev->devlist_generation ^ 2391 (cfg80211_rdev_list_generation << 2))) 2392 goto nla_put_failure; 2393 2394 if (rdev->ops->get_channel) { 2395 int ret; 2396 struct cfg80211_chan_def chandef; 2397 2398 ret = rdev_get_channel(rdev, wdev, &chandef); 2399 if (ret == 0) { 2400 if (nl80211_send_chandef(msg, &chandef)) 2401 goto nla_put_failure; 2402 } 2403 } 2404 2405 if (wdev->ssid_len) { 2406 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2407 goto nla_put_failure; 2408 } 2409 2410 genlmsg_end(msg, hdr); 2411 return 0; 2412 2413 nla_put_failure: 2414 genlmsg_cancel(msg, hdr); 2415 return -EMSGSIZE; 2416 } 2417 2418 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2419 { 2420 int wp_idx = 0; 2421 int if_idx = 0; 2422 int wp_start = cb->args[0]; 2423 int if_start = cb->args[1]; 2424 struct cfg80211_registered_device *rdev; 2425 struct wireless_dev *wdev; 2426 2427 rtnl_lock(); 2428 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2429 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2430 continue; 2431 if (wp_idx < wp_start) { 2432 wp_idx++; 2433 continue; 2434 } 2435 if_idx = 0; 2436 2437 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2438 if (if_idx < if_start) { 2439 if_idx++; 2440 continue; 2441 } 2442 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2443 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2444 rdev, wdev, false) < 0) { 2445 goto out; 2446 } 2447 if_idx++; 2448 } 2449 2450 wp_idx++; 2451 } 2452 out: 2453 rtnl_unlock(); 2454 2455 cb->args[0] = wp_idx; 2456 cb->args[1] = if_idx; 2457 2458 return skb->len; 2459 } 2460 2461 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2462 { 2463 struct sk_buff *msg; 2464 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2465 struct wireless_dev *wdev = info->user_ptr[1]; 2466 2467 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2468 if (!msg) 2469 return -ENOMEM; 2470 2471 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2472 rdev, wdev, false) < 0) { 2473 nlmsg_free(msg); 2474 return -ENOBUFS; 2475 } 2476 2477 return genlmsg_reply(msg, info); 2478 } 2479 2480 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2481 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2482 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2483 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2484 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2485 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2486 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2487 }; 2488 2489 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2490 { 2491 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2492 int flag; 2493 2494 *mntrflags = 0; 2495 2496 if (!nla) 2497 return -EINVAL; 2498 2499 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2500 nla, mntr_flags_policy)) 2501 return -EINVAL; 2502 2503 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2504 if (flags[flag]) 2505 *mntrflags |= (1<<flag); 2506 2507 return 0; 2508 } 2509 2510 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2511 struct net_device *netdev, u8 use_4addr, 2512 enum nl80211_iftype iftype) 2513 { 2514 if (!use_4addr) { 2515 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2516 return -EBUSY; 2517 return 0; 2518 } 2519 2520 switch (iftype) { 2521 case NL80211_IFTYPE_AP_VLAN: 2522 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2523 return 0; 2524 break; 2525 case NL80211_IFTYPE_STATION: 2526 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2527 return 0; 2528 break; 2529 default: 2530 break; 2531 } 2532 2533 return -EOPNOTSUPP; 2534 } 2535 2536 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2537 { 2538 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2539 struct vif_params params; 2540 int err; 2541 enum nl80211_iftype otype, ntype; 2542 struct net_device *dev = info->user_ptr[1]; 2543 u32 _flags, *flags = NULL; 2544 bool change = false; 2545 2546 memset(¶ms, 0, sizeof(params)); 2547 2548 otype = ntype = dev->ieee80211_ptr->iftype; 2549 2550 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2551 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2552 if (otype != ntype) 2553 change = true; 2554 if (ntype > NL80211_IFTYPE_MAX) 2555 return -EINVAL; 2556 } 2557 2558 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2559 struct wireless_dev *wdev = dev->ieee80211_ptr; 2560 2561 if (ntype != NL80211_IFTYPE_MESH_POINT) 2562 return -EINVAL; 2563 if (netif_running(dev)) 2564 return -EBUSY; 2565 2566 wdev_lock(wdev); 2567 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2568 IEEE80211_MAX_MESH_ID_LEN); 2569 wdev->mesh_id_up_len = 2570 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2571 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2572 wdev->mesh_id_up_len); 2573 wdev_unlock(wdev); 2574 } 2575 2576 if (info->attrs[NL80211_ATTR_4ADDR]) { 2577 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2578 change = true; 2579 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2580 if (err) 2581 return err; 2582 } else { 2583 params.use_4addr = -1; 2584 } 2585 2586 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2587 if (ntype != NL80211_IFTYPE_MONITOR) 2588 return -EINVAL; 2589 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2590 &_flags); 2591 if (err) 2592 return err; 2593 2594 flags = &_flags; 2595 change = true; 2596 } 2597 2598 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2599 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2600 return -EOPNOTSUPP; 2601 2602 if (change) 2603 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2604 else 2605 err = 0; 2606 2607 if (!err && params.use_4addr != -1) 2608 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2609 2610 return err; 2611 } 2612 2613 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2614 { 2615 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2616 struct vif_params params; 2617 struct wireless_dev *wdev; 2618 struct sk_buff *msg, *event; 2619 int err; 2620 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2621 u32 flags; 2622 2623 /* to avoid failing a new interface creation due to pending removal */ 2624 cfg80211_destroy_ifaces(rdev); 2625 2626 memset(¶ms, 0, sizeof(params)); 2627 2628 if (!info->attrs[NL80211_ATTR_IFNAME]) 2629 return -EINVAL; 2630 2631 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2632 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2633 if (type > NL80211_IFTYPE_MAX) 2634 return -EINVAL; 2635 } 2636 2637 if (!rdev->ops->add_virtual_intf || 2638 !(rdev->wiphy.interface_modes & (1 << type))) 2639 return -EOPNOTSUPP; 2640 2641 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2642 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2643 info->attrs[NL80211_ATTR_MAC]) { 2644 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2645 ETH_ALEN); 2646 if (!is_valid_ether_addr(params.macaddr)) 2647 return -EADDRNOTAVAIL; 2648 } 2649 2650 if (info->attrs[NL80211_ATTR_4ADDR]) { 2651 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2652 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2653 if (err) 2654 return err; 2655 } 2656 2657 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2658 if (!msg) 2659 return -ENOMEM; 2660 2661 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2662 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2663 &flags); 2664 2665 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2666 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2667 return -EOPNOTSUPP; 2668 2669 wdev = rdev_add_virtual_intf(rdev, 2670 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2671 type, err ? NULL : &flags, ¶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 return -EINVAL; 4066 break; 4067 } 4068 4069 return 0; 4070 } 4071 EXPORT_SYMBOL(cfg80211_check_station_change); 4072 4073 /* 4074 * Get vlan interface making sure it is running and on the right wiphy. 4075 */ 4076 static struct net_device *get_vlan(struct genl_info *info, 4077 struct cfg80211_registered_device *rdev) 4078 { 4079 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4080 struct net_device *v; 4081 int ret; 4082 4083 if (!vlanattr) 4084 return NULL; 4085 4086 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4087 if (!v) 4088 return ERR_PTR(-ENODEV); 4089 4090 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4091 ret = -EINVAL; 4092 goto error; 4093 } 4094 4095 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4096 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4097 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4098 ret = -EINVAL; 4099 goto error; 4100 } 4101 4102 if (!netif_running(v)) { 4103 ret = -ENETDOWN; 4104 goto error; 4105 } 4106 4107 return v; 4108 error: 4109 dev_put(v); 4110 return ERR_PTR(ret); 4111 } 4112 4113 static const struct nla_policy 4114 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4115 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4116 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4117 }; 4118 4119 static int nl80211_parse_sta_wme(struct genl_info *info, 4120 struct station_parameters *params) 4121 { 4122 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4123 struct nlattr *nla; 4124 int err; 4125 4126 /* parse WME attributes if present */ 4127 if (!info->attrs[NL80211_ATTR_STA_WME]) 4128 return 0; 4129 4130 nla = info->attrs[NL80211_ATTR_STA_WME]; 4131 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4132 nl80211_sta_wme_policy); 4133 if (err) 4134 return err; 4135 4136 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4137 params->uapsd_queues = nla_get_u8( 4138 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4139 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4140 return -EINVAL; 4141 4142 if (tb[NL80211_STA_WME_MAX_SP]) 4143 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4144 4145 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4146 return -EINVAL; 4147 4148 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4149 4150 return 0; 4151 } 4152 4153 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4154 struct station_parameters *params) 4155 { 4156 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4157 params->supported_channels = 4158 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4159 params->supported_channels_len = 4160 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4161 /* 4162 * Need to include at least one (first channel, number of 4163 * channels) tuple for each subband, and must have proper 4164 * tuples for the rest of the data as well. 4165 */ 4166 if (params->supported_channels_len < 2) 4167 return -EINVAL; 4168 if (params->supported_channels_len % 2) 4169 return -EINVAL; 4170 } 4171 4172 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4173 params->supported_oper_classes = 4174 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4175 params->supported_oper_classes_len = 4176 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4177 /* 4178 * The value of the Length field of the Supported Operating 4179 * Classes element is between 2 and 253. 4180 */ 4181 if (params->supported_oper_classes_len < 2 || 4182 params->supported_oper_classes_len > 253) 4183 return -EINVAL; 4184 } 4185 return 0; 4186 } 4187 4188 static int nl80211_set_station_tdls(struct genl_info *info, 4189 struct station_parameters *params) 4190 { 4191 int err; 4192 /* Dummy STA entry gets updated once the peer capabilities are known */ 4193 if (info->attrs[NL80211_ATTR_PEER_AID]) 4194 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4195 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4196 params->ht_capa = 4197 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4198 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4199 params->vht_capa = 4200 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4201 4202 err = nl80211_parse_sta_channel_info(info, params); 4203 if (err) 4204 return err; 4205 4206 return nl80211_parse_sta_wme(info, params); 4207 } 4208 4209 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4210 { 4211 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4212 struct net_device *dev = info->user_ptr[1]; 4213 struct station_parameters params; 4214 u8 *mac_addr; 4215 int err; 4216 4217 memset(¶ms, 0, sizeof(params)); 4218 4219 params.listen_interval = -1; 4220 4221 if (!rdev->ops->change_station) 4222 return -EOPNOTSUPP; 4223 4224 if (info->attrs[NL80211_ATTR_STA_AID]) 4225 return -EINVAL; 4226 4227 if (!info->attrs[NL80211_ATTR_MAC]) 4228 return -EINVAL; 4229 4230 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4231 4232 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4233 params.supported_rates = 4234 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4235 params.supported_rates_len = 4236 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4237 } 4238 4239 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4240 params.capability = 4241 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4242 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4243 } 4244 4245 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4246 params.ext_capab = 4247 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4248 params.ext_capab_len = 4249 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4250 } 4251 4252 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4253 return -EINVAL; 4254 4255 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4256 return -EINVAL; 4257 4258 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4259 params.plink_action = 4260 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4261 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4262 return -EINVAL; 4263 } 4264 4265 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4266 params.plink_state = 4267 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4268 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4269 return -EINVAL; 4270 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4271 } 4272 4273 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4274 enum nl80211_mesh_power_mode pm = nla_get_u32( 4275 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4276 4277 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4278 pm > NL80211_MESH_POWER_MAX) 4279 return -EINVAL; 4280 4281 params.local_pm = pm; 4282 } 4283 4284 /* Include parameters for TDLS peer (will check later) */ 4285 err = nl80211_set_station_tdls(info, ¶ms); 4286 if (err) 4287 return err; 4288 4289 params.vlan = get_vlan(info, rdev); 4290 if (IS_ERR(params.vlan)) 4291 return PTR_ERR(params.vlan); 4292 4293 switch (dev->ieee80211_ptr->iftype) { 4294 case NL80211_IFTYPE_AP: 4295 case NL80211_IFTYPE_AP_VLAN: 4296 case NL80211_IFTYPE_P2P_GO: 4297 case NL80211_IFTYPE_P2P_CLIENT: 4298 case NL80211_IFTYPE_STATION: 4299 case NL80211_IFTYPE_ADHOC: 4300 case NL80211_IFTYPE_MESH_POINT: 4301 break; 4302 default: 4303 err = -EOPNOTSUPP; 4304 goto out_put_vlan; 4305 } 4306 4307 /* driver will call cfg80211_check_station_change() */ 4308 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4309 4310 out_put_vlan: 4311 if (params.vlan) 4312 dev_put(params.vlan); 4313 4314 return err; 4315 } 4316 4317 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4318 { 4319 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4320 int err; 4321 struct net_device *dev = info->user_ptr[1]; 4322 struct station_parameters params; 4323 u8 *mac_addr = NULL; 4324 4325 memset(¶ms, 0, sizeof(params)); 4326 4327 if (!rdev->ops->add_station) 4328 return -EOPNOTSUPP; 4329 4330 if (!info->attrs[NL80211_ATTR_MAC]) 4331 return -EINVAL; 4332 4333 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4334 return -EINVAL; 4335 4336 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4337 return -EINVAL; 4338 4339 if (!info->attrs[NL80211_ATTR_STA_AID] && 4340 !info->attrs[NL80211_ATTR_PEER_AID]) 4341 return -EINVAL; 4342 4343 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4344 params.supported_rates = 4345 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4346 params.supported_rates_len = 4347 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4348 params.listen_interval = 4349 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4350 4351 if (info->attrs[NL80211_ATTR_PEER_AID]) 4352 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4353 else 4354 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4355 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4356 return -EINVAL; 4357 4358 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4359 params.capability = 4360 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4361 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4362 } 4363 4364 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4365 params.ext_capab = 4366 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4367 params.ext_capab_len = 4368 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4369 } 4370 4371 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4372 params.ht_capa = 4373 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4374 4375 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4376 params.vht_capa = 4377 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4378 4379 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4380 params.opmode_notif_used = true; 4381 params.opmode_notif = 4382 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4383 } 4384 4385 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4386 params.plink_action = 4387 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4388 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4389 return -EINVAL; 4390 } 4391 4392 err = nl80211_parse_sta_channel_info(info, ¶ms); 4393 if (err) 4394 return err; 4395 4396 err = nl80211_parse_sta_wme(info, ¶ms); 4397 if (err) 4398 return err; 4399 4400 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4401 return -EINVAL; 4402 4403 /* When you run into this, adjust the code below for the new flag */ 4404 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4405 4406 switch (dev->ieee80211_ptr->iftype) { 4407 case NL80211_IFTYPE_AP: 4408 case NL80211_IFTYPE_AP_VLAN: 4409 case NL80211_IFTYPE_P2P_GO: 4410 /* ignore WME attributes if iface/sta is not capable */ 4411 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4412 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4413 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4414 4415 /* TDLS peers cannot be added */ 4416 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4417 info->attrs[NL80211_ATTR_PEER_AID]) 4418 return -EINVAL; 4419 /* but don't bother the driver with it */ 4420 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4421 4422 /* allow authenticated/associated only if driver handles it */ 4423 if (!(rdev->wiphy.features & 4424 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4425 params.sta_flags_mask & 4426 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4427 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4428 return -EINVAL; 4429 4430 /* must be last in here for error handling */ 4431 params.vlan = get_vlan(info, rdev); 4432 if (IS_ERR(params.vlan)) 4433 return PTR_ERR(params.vlan); 4434 break; 4435 case NL80211_IFTYPE_MESH_POINT: 4436 /* ignore uAPSD data */ 4437 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4438 4439 /* associated is disallowed */ 4440 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4441 return -EINVAL; 4442 /* TDLS peers cannot be added */ 4443 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4444 info->attrs[NL80211_ATTR_PEER_AID]) 4445 return -EINVAL; 4446 break; 4447 case NL80211_IFTYPE_STATION: 4448 case NL80211_IFTYPE_P2P_CLIENT: 4449 /* ignore uAPSD data */ 4450 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4451 4452 /* these are disallowed */ 4453 if (params.sta_flags_mask & 4454 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4455 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4456 return -EINVAL; 4457 /* Only TDLS peers can be added */ 4458 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4459 return -EINVAL; 4460 /* Can only add if TDLS ... */ 4461 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4462 return -EOPNOTSUPP; 4463 /* ... with external setup is supported */ 4464 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4465 return -EOPNOTSUPP; 4466 /* 4467 * Older wpa_supplicant versions always mark the TDLS peer 4468 * as authorized, but it shouldn't yet be. 4469 */ 4470 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4471 break; 4472 default: 4473 return -EOPNOTSUPP; 4474 } 4475 4476 /* be aware of params.vlan when changing code here */ 4477 4478 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4479 4480 if (params.vlan) 4481 dev_put(params.vlan); 4482 return err; 4483 } 4484 4485 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4486 { 4487 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4488 struct net_device *dev = info->user_ptr[1]; 4489 struct station_del_parameters params; 4490 4491 memset(¶ms, 0, sizeof(params)); 4492 4493 if (info->attrs[NL80211_ATTR_MAC]) 4494 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4495 4496 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4497 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4498 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4499 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4500 return -EINVAL; 4501 4502 if (!rdev->ops->del_station) 4503 return -EOPNOTSUPP; 4504 4505 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4506 params.subtype = 4507 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4508 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4509 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4510 return -EINVAL; 4511 } else { 4512 /* Default to Deauthentication frame */ 4513 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4514 } 4515 4516 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4517 params.reason_code = 4518 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4519 if (params.reason_code == 0) 4520 return -EINVAL; /* 0 is reserved */ 4521 } else { 4522 /* Default to reason code 2 */ 4523 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4524 } 4525 4526 return rdev_del_station(rdev, dev, ¶ms); 4527 } 4528 4529 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4530 int flags, struct net_device *dev, 4531 u8 *dst, u8 *next_hop, 4532 struct mpath_info *pinfo) 4533 { 4534 void *hdr; 4535 struct nlattr *pinfoattr; 4536 4537 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4538 if (!hdr) 4539 return -1; 4540 4541 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4542 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4543 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4544 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4545 goto nla_put_failure; 4546 4547 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4548 if (!pinfoattr) 4549 goto nla_put_failure; 4550 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4551 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4552 pinfo->frame_qlen)) 4553 goto nla_put_failure; 4554 if (((pinfo->filled & MPATH_INFO_SN) && 4555 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4556 ((pinfo->filled & MPATH_INFO_METRIC) && 4557 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4558 pinfo->metric)) || 4559 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4560 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4561 pinfo->exptime)) || 4562 ((pinfo->filled & MPATH_INFO_FLAGS) && 4563 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4564 pinfo->flags)) || 4565 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4566 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4567 pinfo->discovery_timeout)) || 4568 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4569 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4570 pinfo->discovery_retries))) 4571 goto nla_put_failure; 4572 4573 nla_nest_end(msg, pinfoattr); 4574 4575 genlmsg_end(msg, hdr); 4576 return 0; 4577 4578 nla_put_failure: 4579 genlmsg_cancel(msg, hdr); 4580 return -EMSGSIZE; 4581 } 4582 4583 static int nl80211_dump_mpath(struct sk_buff *skb, 4584 struct netlink_callback *cb) 4585 { 4586 struct mpath_info pinfo; 4587 struct cfg80211_registered_device *rdev; 4588 struct wireless_dev *wdev; 4589 u8 dst[ETH_ALEN]; 4590 u8 next_hop[ETH_ALEN]; 4591 int path_idx = cb->args[2]; 4592 int err; 4593 4594 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4595 if (err) 4596 return err; 4597 4598 if (!rdev->ops->dump_mpath) { 4599 err = -EOPNOTSUPP; 4600 goto out_err; 4601 } 4602 4603 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4604 err = -EOPNOTSUPP; 4605 goto out_err; 4606 } 4607 4608 while (1) { 4609 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4610 next_hop, &pinfo); 4611 if (err == -ENOENT) 4612 break; 4613 if (err) 4614 goto out_err; 4615 4616 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4617 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4618 wdev->netdev, dst, next_hop, 4619 &pinfo) < 0) 4620 goto out; 4621 4622 path_idx++; 4623 } 4624 4625 4626 out: 4627 cb->args[2] = path_idx; 4628 err = skb->len; 4629 out_err: 4630 nl80211_finish_wdev_dump(rdev); 4631 return err; 4632 } 4633 4634 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4635 { 4636 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4637 int err; 4638 struct net_device *dev = info->user_ptr[1]; 4639 struct mpath_info pinfo; 4640 struct sk_buff *msg; 4641 u8 *dst = NULL; 4642 u8 next_hop[ETH_ALEN]; 4643 4644 memset(&pinfo, 0, sizeof(pinfo)); 4645 4646 if (!info->attrs[NL80211_ATTR_MAC]) 4647 return -EINVAL; 4648 4649 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4650 4651 if (!rdev->ops->get_mpath) 4652 return -EOPNOTSUPP; 4653 4654 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4655 return -EOPNOTSUPP; 4656 4657 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4658 if (err) 4659 return err; 4660 4661 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4662 if (!msg) 4663 return -ENOMEM; 4664 4665 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4666 dev, dst, next_hop, &pinfo) < 0) { 4667 nlmsg_free(msg); 4668 return -ENOBUFS; 4669 } 4670 4671 return genlmsg_reply(msg, info); 4672 } 4673 4674 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4675 { 4676 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4677 struct net_device *dev = info->user_ptr[1]; 4678 u8 *dst = NULL; 4679 u8 *next_hop = NULL; 4680 4681 if (!info->attrs[NL80211_ATTR_MAC]) 4682 return -EINVAL; 4683 4684 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4685 return -EINVAL; 4686 4687 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4688 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4689 4690 if (!rdev->ops->change_mpath) 4691 return -EOPNOTSUPP; 4692 4693 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4694 return -EOPNOTSUPP; 4695 4696 return rdev_change_mpath(rdev, dev, dst, next_hop); 4697 } 4698 4699 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4700 { 4701 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4702 struct net_device *dev = info->user_ptr[1]; 4703 u8 *dst = NULL; 4704 u8 *next_hop = NULL; 4705 4706 if (!info->attrs[NL80211_ATTR_MAC]) 4707 return -EINVAL; 4708 4709 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4710 return -EINVAL; 4711 4712 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4713 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4714 4715 if (!rdev->ops->add_mpath) 4716 return -EOPNOTSUPP; 4717 4718 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4719 return -EOPNOTSUPP; 4720 4721 return rdev_add_mpath(rdev, dev, dst, next_hop); 4722 } 4723 4724 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4725 { 4726 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4727 struct net_device *dev = info->user_ptr[1]; 4728 u8 *dst = NULL; 4729 4730 if (info->attrs[NL80211_ATTR_MAC]) 4731 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4732 4733 if (!rdev->ops->del_mpath) 4734 return -EOPNOTSUPP; 4735 4736 return rdev_del_mpath(rdev, dev, dst); 4737 } 4738 4739 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4740 { 4741 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4742 int err; 4743 struct net_device *dev = info->user_ptr[1]; 4744 struct mpath_info pinfo; 4745 struct sk_buff *msg; 4746 u8 *dst = NULL; 4747 u8 mpp[ETH_ALEN]; 4748 4749 memset(&pinfo, 0, sizeof(pinfo)); 4750 4751 if (!info->attrs[NL80211_ATTR_MAC]) 4752 return -EINVAL; 4753 4754 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4755 4756 if (!rdev->ops->get_mpp) 4757 return -EOPNOTSUPP; 4758 4759 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4760 return -EOPNOTSUPP; 4761 4762 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4763 if (err) 4764 return err; 4765 4766 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4767 if (!msg) 4768 return -ENOMEM; 4769 4770 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4771 dev, dst, mpp, &pinfo) < 0) { 4772 nlmsg_free(msg); 4773 return -ENOBUFS; 4774 } 4775 4776 return genlmsg_reply(msg, info); 4777 } 4778 4779 static int nl80211_dump_mpp(struct sk_buff *skb, 4780 struct netlink_callback *cb) 4781 { 4782 struct mpath_info pinfo; 4783 struct cfg80211_registered_device *rdev; 4784 struct wireless_dev *wdev; 4785 u8 dst[ETH_ALEN]; 4786 u8 mpp[ETH_ALEN]; 4787 int path_idx = cb->args[2]; 4788 int err; 4789 4790 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4791 if (err) 4792 return err; 4793 4794 if (!rdev->ops->dump_mpp) { 4795 err = -EOPNOTSUPP; 4796 goto out_err; 4797 } 4798 4799 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4800 err = -EOPNOTSUPP; 4801 goto out_err; 4802 } 4803 4804 while (1) { 4805 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4806 mpp, &pinfo); 4807 if (err == -ENOENT) 4808 break; 4809 if (err) 4810 goto out_err; 4811 4812 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4813 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4814 wdev->netdev, dst, mpp, 4815 &pinfo) < 0) 4816 goto out; 4817 4818 path_idx++; 4819 } 4820 4821 out: 4822 cb->args[2] = path_idx; 4823 err = skb->len; 4824 out_err: 4825 nl80211_finish_wdev_dump(rdev); 4826 return err; 4827 } 4828 4829 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4830 { 4831 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4832 struct net_device *dev = info->user_ptr[1]; 4833 struct wireless_dev *wdev = dev->ieee80211_ptr; 4834 struct bss_parameters params; 4835 int err; 4836 4837 memset(¶ms, 0, sizeof(params)); 4838 /* default to not changing parameters */ 4839 params.use_cts_prot = -1; 4840 params.use_short_preamble = -1; 4841 params.use_short_slot_time = -1; 4842 params.ap_isolate = -1; 4843 params.ht_opmode = -1; 4844 params.p2p_ctwindow = -1; 4845 params.p2p_opp_ps = -1; 4846 4847 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4848 params.use_cts_prot = 4849 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4850 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4851 params.use_short_preamble = 4852 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4853 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4854 params.use_short_slot_time = 4855 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4856 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4857 params.basic_rates = 4858 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4859 params.basic_rates_len = 4860 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4861 } 4862 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4863 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4864 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4865 params.ht_opmode = 4866 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4867 4868 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4869 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4870 return -EINVAL; 4871 params.p2p_ctwindow = 4872 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4873 if (params.p2p_ctwindow < 0) 4874 return -EINVAL; 4875 if (params.p2p_ctwindow != 0 && 4876 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4877 return -EINVAL; 4878 } 4879 4880 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4881 u8 tmp; 4882 4883 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4884 return -EINVAL; 4885 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4886 if (tmp > 1) 4887 return -EINVAL; 4888 params.p2p_opp_ps = tmp; 4889 if (params.p2p_opp_ps && 4890 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4891 return -EINVAL; 4892 } 4893 4894 if (!rdev->ops->change_bss) 4895 return -EOPNOTSUPP; 4896 4897 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4898 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4899 return -EOPNOTSUPP; 4900 4901 wdev_lock(wdev); 4902 err = rdev_change_bss(rdev, dev, ¶ms); 4903 wdev_unlock(wdev); 4904 4905 return err; 4906 } 4907 4908 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4909 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4910 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4911 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4912 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4913 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4914 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4915 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 4916 }; 4917 4918 static int parse_reg_rule(struct nlattr *tb[], 4919 struct ieee80211_reg_rule *reg_rule) 4920 { 4921 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4922 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4923 4924 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4925 return -EINVAL; 4926 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4927 return -EINVAL; 4928 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4929 return -EINVAL; 4930 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4931 return -EINVAL; 4932 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4933 return -EINVAL; 4934 4935 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4936 4937 freq_range->start_freq_khz = 4938 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4939 freq_range->end_freq_khz = 4940 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4941 freq_range->max_bandwidth_khz = 4942 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4943 4944 power_rule->max_eirp = 4945 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4946 4947 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4948 power_rule->max_antenna_gain = 4949 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4950 4951 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 4952 reg_rule->dfs_cac_ms = 4953 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 4954 4955 return 0; 4956 } 4957 4958 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4959 { 4960 char *data = NULL; 4961 enum nl80211_user_reg_hint_type user_reg_hint_type; 4962 4963 /* 4964 * You should only get this when cfg80211 hasn't yet initialized 4965 * completely when built-in to the kernel right between the time 4966 * window between nl80211_init() and regulatory_init(), if that is 4967 * even possible. 4968 */ 4969 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4970 return -EINPROGRESS; 4971 4972 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4973 user_reg_hint_type = 4974 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4975 else 4976 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4977 4978 switch (user_reg_hint_type) { 4979 case NL80211_USER_REG_HINT_USER: 4980 case NL80211_USER_REG_HINT_CELL_BASE: 4981 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4982 return -EINVAL; 4983 4984 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4985 return regulatory_hint_user(data, user_reg_hint_type); 4986 case NL80211_USER_REG_HINT_INDOOR: 4987 return regulatory_hint_indoor_user(); 4988 default: 4989 return -EINVAL; 4990 } 4991 } 4992 4993 static int nl80211_get_mesh_config(struct sk_buff *skb, 4994 struct genl_info *info) 4995 { 4996 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4997 struct net_device *dev = info->user_ptr[1]; 4998 struct wireless_dev *wdev = dev->ieee80211_ptr; 4999 struct mesh_config cur_params; 5000 int err = 0; 5001 void *hdr; 5002 struct nlattr *pinfoattr; 5003 struct sk_buff *msg; 5004 5005 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5006 return -EOPNOTSUPP; 5007 5008 if (!rdev->ops->get_mesh_config) 5009 return -EOPNOTSUPP; 5010 5011 wdev_lock(wdev); 5012 /* If not connected, get default parameters */ 5013 if (!wdev->mesh_id_len) 5014 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5015 else 5016 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5017 wdev_unlock(wdev); 5018 5019 if (err) 5020 return err; 5021 5022 /* Draw up a netlink message to send back */ 5023 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5024 if (!msg) 5025 return -ENOMEM; 5026 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5027 NL80211_CMD_GET_MESH_CONFIG); 5028 if (!hdr) 5029 goto out; 5030 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5031 if (!pinfoattr) 5032 goto nla_put_failure; 5033 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5034 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5035 cur_params.dot11MeshRetryTimeout) || 5036 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5037 cur_params.dot11MeshConfirmTimeout) || 5038 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5039 cur_params.dot11MeshHoldingTimeout) || 5040 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5041 cur_params.dot11MeshMaxPeerLinks) || 5042 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5043 cur_params.dot11MeshMaxRetries) || 5044 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5045 cur_params.dot11MeshTTL) || 5046 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5047 cur_params.element_ttl) || 5048 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5049 cur_params.auto_open_plinks) || 5050 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5051 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5052 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5053 cur_params.dot11MeshHWMPmaxPREQretries) || 5054 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5055 cur_params.path_refresh_time) || 5056 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5057 cur_params.min_discovery_timeout) || 5058 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5059 cur_params.dot11MeshHWMPactivePathTimeout) || 5060 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5061 cur_params.dot11MeshHWMPpreqMinInterval) || 5062 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5063 cur_params.dot11MeshHWMPperrMinInterval) || 5064 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5065 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5066 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5067 cur_params.dot11MeshHWMPRootMode) || 5068 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5069 cur_params.dot11MeshHWMPRannInterval) || 5070 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5071 cur_params.dot11MeshGateAnnouncementProtocol) || 5072 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5073 cur_params.dot11MeshForwarding) || 5074 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5075 cur_params.rssi_threshold) || 5076 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5077 cur_params.ht_opmode) || 5078 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5079 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5080 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5081 cur_params.dot11MeshHWMProotInterval) || 5082 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5083 cur_params.dot11MeshHWMPconfirmationInterval) || 5084 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5085 cur_params.power_mode) || 5086 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5087 cur_params.dot11MeshAwakeWindowDuration) || 5088 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5089 cur_params.plink_timeout)) 5090 goto nla_put_failure; 5091 nla_nest_end(msg, pinfoattr); 5092 genlmsg_end(msg, hdr); 5093 return genlmsg_reply(msg, info); 5094 5095 nla_put_failure: 5096 genlmsg_cancel(msg, hdr); 5097 out: 5098 nlmsg_free(msg); 5099 return -ENOBUFS; 5100 } 5101 5102 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5103 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5104 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5105 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5106 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5107 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5108 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5109 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5110 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5111 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5112 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5113 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5114 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5115 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5116 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5117 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5118 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5119 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5120 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5121 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5122 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5123 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5124 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5125 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5126 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5127 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5128 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5129 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5130 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5131 }; 5132 5133 static const struct nla_policy 5134 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5135 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5136 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5137 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5138 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5139 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5140 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5141 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5142 .len = IEEE80211_MAX_DATA_LEN }, 5143 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5144 }; 5145 5146 static int nl80211_parse_mesh_config(struct genl_info *info, 5147 struct mesh_config *cfg, 5148 u32 *mask_out) 5149 { 5150 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5151 u32 mask = 0; 5152 5153 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5154 do { \ 5155 if (tb[attr]) { \ 5156 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5157 return -EINVAL; \ 5158 cfg->param = fn(tb[attr]); \ 5159 mask |= (1 << (attr - 1)); \ 5160 } \ 5161 } while (0) 5162 5163 5164 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5165 return -EINVAL; 5166 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5167 info->attrs[NL80211_ATTR_MESH_CONFIG], 5168 nl80211_meshconf_params_policy)) 5169 return -EINVAL; 5170 5171 /* This makes sure that there aren't more than 32 mesh config 5172 * parameters (otherwise our bitfield scheme would not work.) */ 5173 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5174 5175 /* Fill in the params struct */ 5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5177 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5178 nla_get_u16); 5179 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5180 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5181 nla_get_u16); 5182 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5183 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5184 nla_get_u16); 5185 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5186 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5187 nla_get_u16); 5188 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5189 mask, NL80211_MESHCONF_MAX_RETRIES, 5190 nla_get_u8); 5191 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5192 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5193 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5194 mask, NL80211_MESHCONF_ELEMENT_TTL, 5195 nla_get_u8); 5196 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5197 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5198 nla_get_u8); 5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5200 1, 255, mask, 5201 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5202 nla_get_u32); 5203 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5204 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5205 nla_get_u8); 5206 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5207 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5208 nla_get_u32); 5209 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5210 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5211 nla_get_u16); 5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5213 1, 65535, mask, 5214 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5215 nla_get_u32); 5216 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5217 1, 65535, mask, 5218 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5219 nla_get_u16); 5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5221 1, 65535, mask, 5222 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5223 nla_get_u16); 5224 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5225 dot11MeshHWMPnetDiameterTraversalTime, 5226 1, 65535, mask, 5227 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5228 nla_get_u16); 5229 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5230 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5231 nla_get_u8); 5232 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5233 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5234 nla_get_u16); 5235 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5236 dot11MeshGateAnnouncementProtocol, 0, 1, 5237 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5238 nla_get_u8); 5239 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5240 mask, NL80211_MESHCONF_FORWARDING, 5241 nla_get_u8); 5242 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5243 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5244 nla_get_s32); 5245 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5246 mask, NL80211_MESHCONF_HT_OPMODE, 5247 nla_get_u16); 5248 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5249 1, 65535, mask, 5250 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5251 nla_get_u32); 5252 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5253 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5254 nla_get_u16); 5255 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5256 dot11MeshHWMPconfirmationInterval, 5257 1, 65535, mask, 5258 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5259 nla_get_u16); 5260 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5261 NL80211_MESH_POWER_ACTIVE, 5262 NL80211_MESH_POWER_MAX, 5263 mask, NL80211_MESHCONF_POWER_MODE, 5264 nla_get_u32); 5265 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5266 0, 65535, mask, 5267 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5268 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 5269 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5270 nla_get_u32); 5271 if (mask_out) 5272 *mask_out = mask; 5273 5274 return 0; 5275 5276 #undef FILL_IN_MESH_PARAM_IF_SET 5277 } 5278 5279 static int nl80211_parse_mesh_setup(struct genl_info *info, 5280 struct mesh_setup *setup) 5281 { 5282 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5283 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5284 5285 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5286 return -EINVAL; 5287 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5288 info->attrs[NL80211_ATTR_MESH_SETUP], 5289 nl80211_mesh_setup_params_policy)) 5290 return -EINVAL; 5291 5292 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5293 setup->sync_method = 5294 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5295 IEEE80211_SYNC_METHOD_VENDOR : 5296 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5297 5298 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5299 setup->path_sel_proto = 5300 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5301 IEEE80211_PATH_PROTOCOL_VENDOR : 5302 IEEE80211_PATH_PROTOCOL_HWMP; 5303 5304 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5305 setup->path_metric = 5306 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5307 IEEE80211_PATH_METRIC_VENDOR : 5308 IEEE80211_PATH_METRIC_AIRTIME; 5309 5310 5311 if (tb[NL80211_MESH_SETUP_IE]) { 5312 struct nlattr *ieattr = 5313 tb[NL80211_MESH_SETUP_IE]; 5314 if (!is_valid_ie_attr(ieattr)) 5315 return -EINVAL; 5316 setup->ie = nla_data(ieattr); 5317 setup->ie_len = nla_len(ieattr); 5318 } 5319 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5320 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5321 return -EINVAL; 5322 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5323 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5324 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5325 if (setup->is_secure) 5326 setup->user_mpm = true; 5327 5328 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5329 if (!setup->user_mpm) 5330 return -EINVAL; 5331 setup->auth_id = 5332 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5333 } 5334 5335 return 0; 5336 } 5337 5338 static int nl80211_update_mesh_config(struct sk_buff *skb, 5339 struct genl_info *info) 5340 { 5341 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5342 struct net_device *dev = info->user_ptr[1]; 5343 struct wireless_dev *wdev = dev->ieee80211_ptr; 5344 struct mesh_config cfg; 5345 u32 mask; 5346 int err; 5347 5348 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5349 return -EOPNOTSUPP; 5350 5351 if (!rdev->ops->update_mesh_config) 5352 return -EOPNOTSUPP; 5353 5354 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5355 if (err) 5356 return err; 5357 5358 wdev_lock(wdev); 5359 if (!wdev->mesh_id_len) 5360 err = -ENOLINK; 5361 5362 if (!err) 5363 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5364 5365 wdev_unlock(wdev); 5366 5367 return err; 5368 } 5369 5370 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5371 struct sk_buff *msg) 5372 { 5373 struct nlattr *nl_reg_rules; 5374 unsigned int i; 5375 5376 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5377 (regdom->dfs_region && 5378 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5379 goto nla_put_failure; 5380 5381 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5382 if (!nl_reg_rules) 5383 goto nla_put_failure; 5384 5385 for (i = 0; i < regdom->n_reg_rules; i++) { 5386 struct nlattr *nl_reg_rule; 5387 const struct ieee80211_reg_rule *reg_rule; 5388 const struct ieee80211_freq_range *freq_range; 5389 const struct ieee80211_power_rule *power_rule; 5390 unsigned int max_bandwidth_khz; 5391 5392 reg_rule = ®dom->reg_rules[i]; 5393 freq_range = ®_rule->freq_range; 5394 power_rule = ®_rule->power_rule; 5395 5396 nl_reg_rule = nla_nest_start(msg, i); 5397 if (!nl_reg_rule) 5398 goto nla_put_failure; 5399 5400 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5401 if (!max_bandwidth_khz) 5402 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5403 reg_rule); 5404 5405 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5406 reg_rule->flags) || 5407 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5408 freq_range->start_freq_khz) || 5409 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5410 freq_range->end_freq_khz) || 5411 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5412 max_bandwidth_khz) || 5413 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5414 power_rule->max_antenna_gain) || 5415 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5416 power_rule->max_eirp) || 5417 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5418 reg_rule->dfs_cac_ms)) 5419 goto nla_put_failure; 5420 5421 nla_nest_end(msg, nl_reg_rule); 5422 } 5423 5424 nla_nest_end(msg, nl_reg_rules); 5425 return 0; 5426 5427 nla_put_failure: 5428 return -EMSGSIZE; 5429 } 5430 5431 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5432 { 5433 const struct ieee80211_regdomain *regdom = NULL; 5434 struct cfg80211_registered_device *rdev; 5435 struct wiphy *wiphy = NULL; 5436 struct sk_buff *msg; 5437 void *hdr; 5438 5439 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5440 if (!msg) 5441 return -ENOBUFS; 5442 5443 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5444 NL80211_CMD_GET_REG); 5445 if (!hdr) 5446 goto put_failure; 5447 5448 if (info->attrs[NL80211_ATTR_WIPHY]) { 5449 bool self_managed; 5450 5451 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5452 if (IS_ERR(rdev)) { 5453 nlmsg_free(msg); 5454 return PTR_ERR(rdev); 5455 } 5456 5457 wiphy = &rdev->wiphy; 5458 self_managed = wiphy->regulatory_flags & 5459 REGULATORY_WIPHY_SELF_MANAGED; 5460 regdom = get_wiphy_regdom(wiphy); 5461 5462 /* a self-managed-reg device must have a private regdom */ 5463 if (WARN_ON(!regdom && self_managed)) { 5464 nlmsg_free(msg); 5465 return -EINVAL; 5466 } 5467 5468 if (regdom && 5469 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5470 goto nla_put_failure; 5471 } 5472 5473 if (!wiphy && reg_last_request_cell_base() && 5474 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5475 NL80211_USER_REG_HINT_CELL_BASE)) 5476 goto nla_put_failure; 5477 5478 rcu_read_lock(); 5479 5480 if (!regdom) 5481 regdom = rcu_dereference(cfg80211_regdomain); 5482 5483 if (nl80211_put_regdom(regdom, msg)) 5484 goto nla_put_failure_rcu; 5485 5486 rcu_read_unlock(); 5487 5488 genlmsg_end(msg, hdr); 5489 return genlmsg_reply(msg, info); 5490 5491 nla_put_failure_rcu: 5492 rcu_read_unlock(); 5493 nla_put_failure: 5494 genlmsg_cancel(msg, hdr); 5495 put_failure: 5496 nlmsg_free(msg); 5497 return -EMSGSIZE; 5498 } 5499 5500 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5501 u32 seq, int flags, struct wiphy *wiphy, 5502 const struct ieee80211_regdomain *regdom) 5503 { 5504 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5505 NL80211_CMD_GET_REG); 5506 5507 if (!hdr) 5508 return -1; 5509 5510 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5511 5512 if (nl80211_put_regdom(regdom, msg)) 5513 goto nla_put_failure; 5514 5515 if (!wiphy && reg_last_request_cell_base() && 5516 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5517 NL80211_USER_REG_HINT_CELL_BASE)) 5518 goto nla_put_failure; 5519 5520 if (wiphy && 5521 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5522 goto nla_put_failure; 5523 5524 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5525 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5526 goto nla_put_failure; 5527 5528 genlmsg_end(msg, hdr); 5529 return 0; 5530 5531 nla_put_failure: 5532 genlmsg_cancel(msg, hdr); 5533 return -EMSGSIZE; 5534 } 5535 5536 static int nl80211_get_reg_dump(struct sk_buff *skb, 5537 struct netlink_callback *cb) 5538 { 5539 const struct ieee80211_regdomain *regdom = NULL; 5540 struct cfg80211_registered_device *rdev; 5541 int err, reg_idx, start = cb->args[2]; 5542 5543 rtnl_lock(); 5544 5545 if (cfg80211_regdomain && start == 0) { 5546 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5547 NLM_F_MULTI, NULL, 5548 rtnl_dereference(cfg80211_regdomain)); 5549 if (err < 0) 5550 goto out_err; 5551 } 5552 5553 /* the global regdom is idx 0 */ 5554 reg_idx = 1; 5555 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5556 regdom = get_wiphy_regdom(&rdev->wiphy); 5557 if (!regdom) 5558 continue; 5559 5560 if (++reg_idx <= start) 5561 continue; 5562 5563 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5564 NLM_F_MULTI, &rdev->wiphy, regdom); 5565 if (err < 0) { 5566 reg_idx--; 5567 break; 5568 } 5569 } 5570 5571 cb->args[2] = reg_idx; 5572 err = skb->len; 5573 out_err: 5574 rtnl_unlock(); 5575 return err; 5576 } 5577 5578 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5579 { 5580 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5581 struct nlattr *nl_reg_rule; 5582 char *alpha2; 5583 int rem_reg_rules, r; 5584 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5585 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5586 struct ieee80211_regdomain *rd; 5587 5588 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5589 return -EINVAL; 5590 5591 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5592 return -EINVAL; 5593 5594 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5595 5596 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5597 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5598 5599 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5600 rem_reg_rules) { 5601 num_rules++; 5602 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5603 return -EINVAL; 5604 } 5605 5606 if (!reg_is_valid_request(alpha2)) 5607 return -EINVAL; 5608 5609 size_of_regd = sizeof(struct ieee80211_regdomain) + 5610 num_rules * sizeof(struct ieee80211_reg_rule); 5611 5612 rd = kzalloc(size_of_regd, GFP_KERNEL); 5613 if (!rd) 5614 return -ENOMEM; 5615 5616 rd->n_reg_rules = num_rules; 5617 rd->alpha2[0] = alpha2[0]; 5618 rd->alpha2[1] = alpha2[1]; 5619 5620 /* 5621 * Disable DFS master mode if the DFS region was 5622 * not supported or known on this kernel. 5623 */ 5624 if (reg_supported_dfs_region(dfs_region)) 5625 rd->dfs_region = dfs_region; 5626 5627 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5628 rem_reg_rules) { 5629 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5630 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5631 reg_rule_policy); 5632 if (r) 5633 goto bad_reg; 5634 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5635 if (r) 5636 goto bad_reg; 5637 5638 rule_idx++; 5639 5640 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5641 r = -EINVAL; 5642 goto bad_reg; 5643 } 5644 } 5645 5646 r = set_regdom(rd); 5647 /* set_regdom took ownership */ 5648 rd = NULL; 5649 5650 bad_reg: 5651 kfree(rd); 5652 return r; 5653 } 5654 5655 static int validate_scan_freqs(struct nlattr *freqs) 5656 { 5657 struct nlattr *attr1, *attr2; 5658 int n_channels = 0, tmp1, tmp2; 5659 5660 nla_for_each_nested(attr1, freqs, tmp1) { 5661 n_channels++; 5662 /* 5663 * Some hardware has a limited channel list for 5664 * scanning, and it is pretty much nonsensical 5665 * to scan for a channel twice, so disallow that 5666 * and don't require drivers to check that the 5667 * channel list they get isn't longer than what 5668 * they can scan, as long as they can scan all 5669 * the channels they registered at once. 5670 */ 5671 nla_for_each_nested(attr2, freqs, tmp2) 5672 if (attr1 != attr2 && 5673 nla_get_u32(attr1) == nla_get_u32(attr2)) 5674 return 0; 5675 } 5676 5677 return n_channels; 5678 } 5679 5680 static int nl80211_parse_random_mac(struct nlattr **attrs, 5681 u8 *mac_addr, u8 *mac_addr_mask) 5682 { 5683 int i; 5684 5685 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5686 memset(mac_addr, 0, ETH_ALEN); 5687 memset(mac_addr_mask, 0, ETH_ALEN); 5688 mac_addr[0] = 0x2; 5689 mac_addr_mask[0] = 0x3; 5690 5691 return 0; 5692 } 5693 5694 /* need both or none */ 5695 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5696 return -EINVAL; 5697 5698 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5699 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5700 5701 /* don't allow or configure an mcast address */ 5702 if (!is_multicast_ether_addr(mac_addr_mask) || 5703 is_multicast_ether_addr(mac_addr)) 5704 return -EINVAL; 5705 5706 /* 5707 * allow users to pass a MAC address that has bits set outside 5708 * of the mask, but don't bother drivers with having to deal 5709 * with such bits 5710 */ 5711 for (i = 0; i < ETH_ALEN; i++) 5712 mac_addr[i] &= mac_addr_mask[i]; 5713 5714 return 0; 5715 } 5716 5717 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5718 { 5719 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5720 struct wireless_dev *wdev = info->user_ptr[1]; 5721 struct cfg80211_scan_request *request; 5722 struct nlattr *attr; 5723 struct wiphy *wiphy; 5724 int err, tmp, n_ssids = 0, n_channels, i; 5725 size_t ie_len; 5726 5727 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5728 return -EINVAL; 5729 5730 wiphy = &rdev->wiphy; 5731 5732 if (!rdev->ops->scan) 5733 return -EOPNOTSUPP; 5734 5735 if (rdev->scan_req || rdev->scan_msg) { 5736 err = -EBUSY; 5737 goto unlock; 5738 } 5739 5740 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5741 n_channels = validate_scan_freqs( 5742 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5743 if (!n_channels) { 5744 err = -EINVAL; 5745 goto unlock; 5746 } 5747 } else { 5748 n_channels = ieee80211_get_num_supported_channels(wiphy); 5749 } 5750 5751 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5752 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5753 n_ssids++; 5754 5755 if (n_ssids > wiphy->max_scan_ssids) { 5756 err = -EINVAL; 5757 goto unlock; 5758 } 5759 5760 if (info->attrs[NL80211_ATTR_IE]) 5761 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5762 else 5763 ie_len = 0; 5764 5765 if (ie_len > wiphy->max_scan_ie_len) { 5766 err = -EINVAL; 5767 goto unlock; 5768 } 5769 5770 request = kzalloc(sizeof(*request) 5771 + sizeof(*request->ssids) * n_ssids 5772 + sizeof(*request->channels) * n_channels 5773 + ie_len, GFP_KERNEL); 5774 if (!request) { 5775 err = -ENOMEM; 5776 goto unlock; 5777 } 5778 5779 if (n_ssids) 5780 request->ssids = (void *)&request->channels[n_channels]; 5781 request->n_ssids = n_ssids; 5782 if (ie_len) { 5783 if (n_ssids) 5784 request->ie = (void *)(request->ssids + n_ssids); 5785 else 5786 request->ie = (void *)(request->channels + n_channels); 5787 } 5788 5789 i = 0; 5790 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5791 /* user specified, bail out if channel not found */ 5792 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5793 struct ieee80211_channel *chan; 5794 5795 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5796 5797 if (!chan) { 5798 err = -EINVAL; 5799 goto out_free; 5800 } 5801 5802 /* ignore disabled channels */ 5803 if (chan->flags & IEEE80211_CHAN_DISABLED) 5804 continue; 5805 5806 request->channels[i] = chan; 5807 i++; 5808 } 5809 } else { 5810 enum ieee80211_band band; 5811 5812 /* all channels */ 5813 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5814 int j; 5815 if (!wiphy->bands[band]) 5816 continue; 5817 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5818 struct ieee80211_channel *chan; 5819 5820 chan = &wiphy->bands[band]->channels[j]; 5821 5822 if (chan->flags & IEEE80211_CHAN_DISABLED) 5823 continue; 5824 5825 request->channels[i] = chan; 5826 i++; 5827 } 5828 } 5829 } 5830 5831 if (!i) { 5832 err = -EINVAL; 5833 goto out_free; 5834 } 5835 5836 request->n_channels = i; 5837 5838 i = 0; 5839 if (n_ssids) { 5840 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5841 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5842 err = -EINVAL; 5843 goto out_free; 5844 } 5845 request->ssids[i].ssid_len = nla_len(attr); 5846 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5847 i++; 5848 } 5849 } 5850 5851 if (info->attrs[NL80211_ATTR_IE]) { 5852 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5853 memcpy((void *)request->ie, 5854 nla_data(info->attrs[NL80211_ATTR_IE]), 5855 request->ie_len); 5856 } 5857 5858 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5859 if (wiphy->bands[i]) 5860 request->rates[i] = 5861 (1 << wiphy->bands[i]->n_bitrates) - 1; 5862 5863 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5864 nla_for_each_nested(attr, 5865 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5866 tmp) { 5867 enum ieee80211_band band = nla_type(attr); 5868 5869 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5870 err = -EINVAL; 5871 goto out_free; 5872 } 5873 5874 if (!wiphy->bands[band]) 5875 continue; 5876 5877 err = ieee80211_get_ratemask(wiphy->bands[band], 5878 nla_data(attr), 5879 nla_len(attr), 5880 &request->rates[band]); 5881 if (err) 5882 goto out_free; 5883 } 5884 } 5885 5886 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5887 request->flags = nla_get_u32( 5888 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5889 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5890 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5891 err = -EOPNOTSUPP; 5892 goto out_free; 5893 } 5894 5895 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5896 if (!(wiphy->features & 5897 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5898 err = -EOPNOTSUPP; 5899 goto out_free; 5900 } 5901 5902 if (wdev->current_bss) { 5903 err = -EOPNOTSUPP; 5904 goto out_free; 5905 } 5906 5907 err = nl80211_parse_random_mac(info->attrs, 5908 request->mac_addr, 5909 request->mac_addr_mask); 5910 if (err) 5911 goto out_free; 5912 } 5913 } 5914 5915 request->no_cck = 5916 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5917 5918 request->wdev = wdev; 5919 request->wiphy = &rdev->wiphy; 5920 request->scan_start = jiffies; 5921 5922 rdev->scan_req = request; 5923 err = rdev_scan(rdev, request); 5924 5925 if (!err) { 5926 nl80211_send_scan_start(rdev, wdev); 5927 if (wdev->netdev) 5928 dev_hold(wdev->netdev); 5929 } else { 5930 out_free: 5931 rdev->scan_req = NULL; 5932 kfree(request); 5933 } 5934 5935 unlock: 5936 return err; 5937 } 5938 5939 static struct cfg80211_sched_scan_request * 5940 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 5941 struct nlattr **attrs) 5942 { 5943 struct cfg80211_sched_scan_request *request; 5944 struct nlattr *attr; 5945 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5946 u32 interval; 5947 enum ieee80211_band band; 5948 size_t ie_len; 5949 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5950 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 5951 5952 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 5953 return ERR_PTR(-EINVAL); 5954 5955 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5956 return ERR_PTR(-EINVAL); 5957 5958 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5959 if (interval == 0) 5960 return ERR_PTR(-EINVAL); 5961 5962 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5963 n_channels = validate_scan_freqs( 5964 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5965 if (!n_channels) 5966 return ERR_PTR(-EINVAL); 5967 } else { 5968 n_channels = ieee80211_get_num_supported_channels(wiphy); 5969 } 5970 5971 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 5972 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5973 tmp) 5974 n_ssids++; 5975 5976 if (n_ssids > wiphy->max_sched_scan_ssids) 5977 return ERR_PTR(-EINVAL); 5978 5979 /* 5980 * First, count the number of 'real' matchsets. Due to an issue with 5981 * the old implementation, matchsets containing only the RSSI attribute 5982 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 5983 * RSSI for all matchsets, rather than their own matchset for reporting 5984 * all APs with a strong RSSI. This is needed to be compatible with 5985 * older userspace that treated a matchset with only the RSSI as the 5986 * global RSSI for all other matchsets - if there are other matchsets. 5987 */ 5988 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5989 nla_for_each_nested(attr, 5990 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5991 tmp) { 5992 struct nlattr *rssi; 5993 5994 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5995 nla_data(attr), nla_len(attr), 5996 nl80211_match_policy); 5997 if (err) 5998 return ERR_PTR(err); 5999 /* add other standalone attributes here */ 6000 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6001 n_match_sets++; 6002 continue; 6003 } 6004 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6005 if (rssi) 6006 default_match_rssi = nla_get_s32(rssi); 6007 } 6008 } 6009 6010 /* However, if there's no other matchset, add the RSSI one */ 6011 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6012 n_match_sets = 1; 6013 6014 if (n_match_sets > wiphy->max_match_sets) 6015 return ERR_PTR(-EINVAL); 6016 6017 if (attrs[NL80211_ATTR_IE]) 6018 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6019 else 6020 ie_len = 0; 6021 6022 if (ie_len > wiphy->max_sched_scan_ie_len) 6023 return ERR_PTR(-EINVAL); 6024 6025 request = kzalloc(sizeof(*request) 6026 + sizeof(*request->ssids) * n_ssids 6027 + sizeof(*request->match_sets) * n_match_sets 6028 + sizeof(*request->channels) * n_channels 6029 + ie_len, GFP_KERNEL); 6030 if (!request) 6031 return ERR_PTR(-ENOMEM); 6032 6033 if (n_ssids) 6034 request->ssids = (void *)&request->channels[n_channels]; 6035 request->n_ssids = n_ssids; 6036 if (ie_len) { 6037 if (n_ssids) 6038 request->ie = (void *)(request->ssids + n_ssids); 6039 else 6040 request->ie = (void *)(request->channels + n_channels); 6041 } 6042 6043 if (n_match_sets) { 6044 if (request->ie) 6045 request->match_sets = (void *)(request->ie + ie_len); 6046 else if (n_ssids) 6047 request->match_sets = 6048 (void *)(request->ssids + n_ssids); 6049 else 6050 request->match_sets = 6051 (void *)(request->channels + n_channels); 6052 } 6053 request->n_match_sets = n_match_sets; 6054 6055 i = 0; 6056 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6057 /* user specified, bail out if channel not found */ 6058 nla_for_each_nested(attr, 6059 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6060 tmp) { 6061 struct ieee80211_channel *chan; 6062 6063 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6064 6065 if (!chan) { 6066 err = -EINVAL; 6067 goto out_free; 6068 } 6069 6070 /* ignore disabled channels */ 6071 if (chan->flags & IEEE80211_CHAN_DISABLED) 6072 continue; 6073 6074 request->channels[i] = chan; 6075 i++; 6076 } 6077 } else { 6078 /* all channels */ 6079 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 6080 int j; 6081 if (!wiphy->bands[band]) 6082 continue; 6083 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6084 struct ieee80211_channel *chan; 6085 6086 chan = &wiphy->bands[band]->channels[j]; 6087 6088 if (chan->flags & IEEE80211_CHAN_DISABLED) 6089 continue; 6090 6091 request->channels[i] = chan; 6092 i++; 6093 } 6094 } 6095 } 6096 6097 if (!i) { 6098 err = -EINVAL; 6099 goto out_free; 6100 } 6101 6102 request->n_channels = i; 6103 6104 i = 0; 6105 if (n_ssids) { 6106 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6107 tmp) { 6108 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6109 err = -EINVAL; 6110 goto out_free; 6111 } 6112 request->ssids[i].ssid_len = nla_len(attr); 6113 memcpy(request->ssids[i].ssid, nla_data(attr), 6114 nla_len(attr)); 6115 i++; 6116 } 6117 } 6118 6119 i = 0; 6120 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6121 nla_for_each_nested(attr, 6122 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6123 tmp) { 6124 struct nlattr *ssid, *rssi; 6125 6126 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6127 nla_data(attr), nla_len(attr), 6128 nl80211_match_policy); 6129 if (err) 6130 goto out_free; 6131 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6132 if (ssid) { 6133 if (WARN_ON(i >= n_match_sets)) { 6134 /* this indicates a programming error, 6135 * the loop above should have verified 6136 * things properly 6137 */ 6138 err = -EINVAL; 6139 goto out_free; 6140 } 6141 6142 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6143 err = -EINVAL; 6144 goto out_free; 6145 } 6146 memcpy(request->match_sets[i].ssid.ssid, 6147 nla_data(ssid), nla_len(ssid)); 6148 request->match_sets[i].ssid.ssid_len = 6149 nla_len(ssid); 6150 /* special attribute - old implemenation w/a */ 6151 request->match_sets[i].rssi_thold = 6152 default_match_rssi; 6153 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6154 if (rssi) 6155 request->match_sets[i].rssi_thold = 6156 nla_get_s32(rssi); 6157 } 6158 i++; 6159 } 6160 6161 /* there was no other matchset, so the RSSI one is alone */ 6162 if (i == 0 && n_match_sets) 6163 request->match_sets[0].rssi_thold = default_match_rssi; 6164 6165 request->min_rssi_thold = INT_MAX; 6166 for (i = 0; i < n_match_sets; i++) 6167 request->min_rssi_thold = 6168 min(request->match_sets[i].rssi_thold, 6169 request->min_rssi_thold); 6170 } else { 6171 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6172 } 6173 6174 if (ie_len) { 6175 request->ie_len = ie_len; 6176 memcpy((void *)request->ie, 6177 nla_data(attrs[NL80211_ATTR_IE]), 6178 request->ie_len); 6179 } 6180 6181 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6182 request->flags = nla_get_u32( 6183 attrs[NL80211_ATTR_SCAN_FLAGS]); 6184 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6185 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6186 err = -EOPNOTSUPP; 6187 goto out_free; 6188 } 6189 6190 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6191 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6192 6193 if (!wdev) /* must be net-detect */ 6194 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6195 6196 if (!(wiphy->features & flg)) { 6197 err = -EOPNOTSUPP; 6198 goto out_free; 6199 } 6200 6201 if (wdev && wdev->current_bss) { 6202 err = -EOPNOTSUPP; 6203 goto out_free; 6204 } 6205 6206 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6207 request->mac_addr_mask); 6208 if (err) 6209 goto out_free; 6210 } 6211 } 6212 6213 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6214 request->delay = 6215 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6216 6217 request->interval = interval; 6218 request->scan_start = jiffies; 6219 6220 return request; 6221 6222 out_free: 6223 kfree(request); 6224 return ERR_PTR(err); 6225 } 6226 6227 static int nl80211_start_sched_scan(struct sk_buff *skb, 6228 struct genl_info *info) 6229 { 6230 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6231 struct net_device *dev = info->user_ptr[1]; 6232 struct wireless_dev *wdev = dev->ieee80211_ptr; 6233 struct cfg80211_sched_scan_request *sched_scan_req; 6234 int err; 6235 6236 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6237 !rdev->ops->sched_scan_start) 6238 return -EOPNOTSUPP; 6239 6240 if (rdev->sched_scan_req) 6241 return -EINPROGRESS; 6242 6243 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6244 info->attrs); 6245 6246 err = PTR_ERR_OR_ZERO(sched_scan_req); 6247 if (err) 6248 goto out_err; 6249 6250 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6251 if (err) 6252 goto out_free; 6253 6254 sched_scan_req->dev = dev; 6255 sched_scan_req->wiphy = &rdev->wiphy; 6256 6257 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6258 sched_scan_req->owner_nlportid = info->snd_portid; 6259 6260 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6261 6262 nl80211_send_sched_scan(rdev, dev, 6263 NL80211_CMD_START_SCHED_SCAN); 6264 return 0; 6265 6266 out_free: 6267 kfree(sched_scan_req); 6268 out_err: 6269 return err; 6270 } 6271 6272 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6273 struct genl_info *info) 6274 { 6275 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6276 6277 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6278 !rdev->ops->sched_scan_stop) 6279 return -EOPNOTSUPP; 6280 6281 return __cfg80211_stop_sched_scan(rdev, false); 6282 } 6283 6284 static int nl80211_start_radar_detection(struct sk_buff *skb, 6285 struct genl_info *info) 6286 { 6287 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6288 struct net_device *dev = info->user_ptr[1]; 6289 struct wireless_dev *wdev = dev->ieee80211_ptr; 6290 struct cfg80211_chan_def chandef; 6291 enum nl80211_dfs_regions dfs_region; 6292 unsigned int cac_time_ms; 6293 int err; 6294 6295 dfs_region = reg_get_dfs_region(wdev->wiphy); 6296 if (dfs_region == NL80211_DFS_UNSET) 6297 return -EINVAL; 6298 6299 err = nl80211_parse_chandef(rdev, info, &chandef); 6300 if (err) 6301 return err; 6302 6303 if (netif_carrier_ok(dev)) 6304 return -EBUSY; 6305 6306 if (wdev->cac_started) 6307 return -EBUSY; 6308 6309 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6310 wdev->iftype); 6311 if (err < 0) 6312 return err; 6313 6314 if (err == 0) 6315 return -EINVAL; 6316 6317 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6318 return -EINVAL; 6319 6320 if (!rdev->ops->start_radar_detection) 6321 return -EOPNOTSUPP; 6322 6323 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6324 if (WARN_ON(!cac_time_ms)) 6325 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6326 6327 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef, 6328 cac_time_ms); 6329 if (!err) { 6330 wdev->chandef = chandef; 6331 wdev->cac_started = true; 6332 wdev->cac_start_time = jiffies; 6333 wdev->cac_time_ms = cac_time_ms; 6334 } 6335 return err; 6336 } 6337 6338 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6339 { 6340 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6341 struct net_device *dev = info->user_ptr[1]; 6342 struct wireless_dev *wdev = dev->ieee80211_ptr; 6343 struct cfg80211_csa_settings params; 6344 /* csa_attrs is defined static to avoid waste of stack size - this 6345 * function is called under RTNL lock, so this should not be a problem. 6346 */ 6347 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6348 int err; 6349 bool need_new_beacon = false; 6350 int len, i; 6351 u32 cs_count; 6352 6353 if (!rdev->ops->channel_switch || 6354 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6355 return -EOPNOTSUPP; 6356 6357 switch (dev->ieee80211_ptr->iftype) { 6358 case NL80211_IFTYPE_AP: 6359 case NL80211_IFTYPE_P2P_GO: 6360 need_new_beacon = true; 6361 6362 /* useless if AP is not running */ 6363 if (!wdev->beacon_interval) 6364 return -ENOTCONN; 6365 break; 6366 case NL80211_IFTYPE_ADHOC: 6367 if (!wdev->ssid_len) 6368 return -ENOTCONN; 6369 break; 6370 case NL80211_IFTYPE_MESH_POINT: 6371 if (!wdev->mesh_id_len) 6372 return -ENOTCONN; 6373 break; 6374 default: 6375 return -EOPNOTSUPP; 6376 } 6377 6378 memset(¶ms, 0, sizeof(params)); 6379 6380 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6381 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6382 return -EINVAL; 6383 6384 /* only important for AP, IBSS and mesh create IEs internally */ 6385 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6386 return -EINVAL; 6387 6388 /* Even though the attribute is u32, the specification says 6389 * u8, so let's make sure we don't overflow. 6390 */ 6391 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6392 if (cs_count > 255) 6393 return -EINVAL; 6394 6395 params.count = cs_count; 6396 6397 if (!need_new_beacon) 6398 goto skip_beacons; 6399 6400 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6401 if (err) 6402 return err; 6403 6404 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6405 info->attrs[NL80211_ATTR_CSA_IES], 6406 nl80211_policy); 6407 if (err) 6408 return err; 6409 6410 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6411 if (err) 6412 return err; 6413 6414 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6415 return -EINVAL; 6416 6417 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6418 if (!len || (len % sizeof(u16))) 6419 return -EINVAL; 6420 6421 params.n_counter_offsets_beacon = len / sizeof(u16); 6422 if (rdev->wiphy.max_num_csa_counters && 6423 (params.n_counter_offsets_beacon > 6424 rdev->wiphy.max_num_csa_counters)) 6425 return -EINVAL; 6426 6427 params.counter_offsets_beacon = 6428 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6429 6430 /* sanity checks - counters should fit and be the same */ 6431 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6432 u16 offset = params.counter_offsets_beacon[i]; 6433 6434 if (offset >= params.beacon_csa.tail_len) 6435 return -EINVAL; 6436 6437 if (params.beacon_csa.tail[offset] != params.count) 6438 return -EINVAL; 6439 } 6440 6441 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6442 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6443 if (!len || (len % sizeof(u16))) 6444 return -EINVAL; 6445 6446 params.n_counter_offsets_presp = len / sizeof(u16); 6447 if (rdev->wiphy.max_num_csa_counters && 6448 (params.n_counter_offsets_beacon > 6449 rdev->wiphy.max_num_csa_counters)) 6450 return -EINVAL; 6451 6452 params.counter_offsets_presp = 6453 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6454 6455 /* sanity checks - counters should fit and be the same */ 6456 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6457 u16 offset = params.counter_offsets_presp[i]; 6458 6459 if (offset >= params.beacon_csa.probe_resp_len) 6460 return -EINVAL; 6461 6462 if (params.beacon_csa.probe_resp[offset] != 6463 params.count) 6464 return -EINVAL; 6465 } 6466 } 6467 6468 skip_beacons: 6469 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6470 if (err) 6471 return err; 6472 6473 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 6474 wdev->iftype)) 6475 return -EINVAL; 6476 6477 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6478 ¶ms.chandef, 6479 wdev->iftype); 6480 if (err < 0) 6481 return err; 6482 6483 if (err > 0) 6484 params.radar_required = true; 6485 6486 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6487 params.block_tx = true; 6488 6489 wdev_lock(wdev); 6490 err = rdev_channel_switch(rdev, dev, ¶ms); 6491 wdev_unlock(wdev); 6492 6493 return err; 6494 } 6495 6496 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6497 u32 seq, int flags, 6498 struct cfg80211_registered_device *rdev, 6499 struct wireless_dev *wdev, 6500 struct cfg80211_internal_bss *intbss) 6501 { 6502 struct cfg80211_bss *res = &intbss->pub; 6503 const struct cfg80211_bss_ies *ies; 6504 void *hdr; 6505 struct nlattr *bss; 6506 6507 ASSERT_WDEV_LOCK(wdev); 6508 6509 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6510 NL80211_CMD_NEW_SCAN_RESULTS); 6511 if (!hdr) 6512 return -1; 6513 6514 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6515 6516 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6517 goto nla_put_failure; 6518 if (wdev->netdev && 6519 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6520 goto nla_put_failure; 6521 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6522 goto nla_put_failure; 6523 6524 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6525 if (!bss) 6526 goto nla_put_failure; 6527 if ((!is_zero_ether_addr(res->bssid) && 6528 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6529 goto nla_put_failure; 6530 6531 rcu_read_lock(); 6532 /* indicate whether we have probe response data or not */ 6533 if (rcu_access_pointer(res->proberesp_ies) && 6534 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6535 goto fail_unlock_rcu; 6536 6537 /* this pointer prefers to be pointed to probe response data 6538 * but is always valid 6539 */ 6540 ies = rcu_dereference(res->ies); 6541 if (ies) { 6542 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6543 goto fail_unlock_rcu; 6544 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6545 ies->len, ies->data)) 6546 goto fail_unlock_rcu; 6547 } 6548 6549 /* and this pointer is always (unless driver didn't know) beacon data */ 6550 ies = rcu_dereference(res->beacon_ies); 6551 if (ies && ies->from_beacon) { 6552 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6553 goto fail_unlock_rcu; 6554 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6555 ies->len, ies->data)) 6556 goto fail_unlock_rcu; 6557 } 6558 rcu_read_unlock(); 6559 6560 if (res->beacon_interval && 6561 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6562 goto nla_put_failure; 6563 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6564 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6565 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6566 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6567 jiffies_to_msecs(jiffies - intbss->ts))) 6568 goto nla_put_failure; 6569 6570 switch (rdev->wiphy.signal_type) { 6571 case CFG80211_SIGNAL_TYPE_MBM: 6572 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6573 goto nla_put_failure; 6574 break; 6575 case CFG80211_SIGNAL_TYPE_UNSPEC: 6576 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6577 goto nla_put_failure; 6578 break; 6579 default: 6580 break; 6581 } 6582 6583 switch (wdev->iftype) { 6584 case NL80211_IFTYPE_P2P_CLIENT: 6585 case NL80211_IFTYPE_STATION: 6586 if (intbss == wdev->current_bss && 6587 nla_put_u32(msg, NL80211_BSS_STATUS, 6588 NL80211_BSS_STATUS_ASSOCIATED)) 6589 goto nla_put_failure; 6590 break; 6591 case NL80211_IFTYPE_ADHOC: 6592 if (intbss == wdev->current_bss && 6593 nla_put_u32(msg, NL80211_BSS_STATUS, 6594 NL80211_BSS_STATUS_IBSS_JOINED)) 6595 goto nla_put_failure; 6596 break; 6597 default: 6598 break; 6599 } 6600 6601 nla_nest_end(msg, bss); 6602 6603 genlmsg_end(msg, hdr); 6604 return 0; 6605 6606 fail_unlock_rcu: 6607 rcu_read_unlock(); 6608 nla_put_failure: 6609 genlmsg_cancel(msg, hdr); 6610 return -EMSGSIZE; 6611 } 6612 6613 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6614 { 6615 struct cfg80211_registered_device *rdev; 6616 struct cfg80211_internal_bss *scan; 6617 struct wireless_dev *wdev; 6618 int start = cb->args[2], idx = 0; 6619 int err; 6620 6621 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6622 if (err) 6623 return err; 6624 6625 wdev_lock(wdev); 6626 spin_lock_bh(&rdev->bss_lock); 6627 cfg80211_bss_expire(rdev); 6628 6629 cb->seq = rdev->bss_generation; 6630 6631 list_for_each_entry(scan, &rdev->bss_list, list) { 6632 if (++idx <= start) 6633 continue; 6634 if (nl80211_send_bss(skb, cb, 6635 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6636 rdev, wdev, scan) < 0) { 6637 idx--; 6638 break; 6639 } 6640 } 6641 6642 spin_unlock_bh(&rdev->bss_lock); 6643 wdev_unlock(wdev); 6644 6645 cb->args[2] = idx; 6646 nl80211_finish_wdev_dump(rdev); 6647 6648 return skb->len; 6649 } 6650 6651 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6652 int flags, struct net_device *dev, 6653 bool allow_radio_stats, 6654 struct survey_info *survey) 6655 { 6656 void *hdr; 6657 struct nlattr *infoattr; 6658 6659 /* skip radio stats if userspace didn't request them */ 6660 if (!survey->channel && !allow_radio_stats) 6661 return 0; 6662 6663 hdr = nl80211hdr_put(msg, portid, seq, flags, 6664 NL80211_CMD_NEW_SURVEY_RESULTS); 6665 if (!hdr) 6666 return -ENOMEM; 6667 6668 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6669 goto nla_put_failure; 6670 6671 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6672 if (!infoattr) 6673 goto nla_put_failure; 6674 6675 if (survey->channel && 6676 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6677 survey->channel->center_freq)) 6678 goto nla_put_failure; 6679 6680 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6681 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6682 goto nla_put_failure; 6683 if ((survey->filled & SURVEY_INFO_IN_USE) && 6684 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6685 goto nla_put_failure; 6686 if ((survey->filled & SURVEY_INFO_TIME) && 6687 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME, 6688 survey->time)) 6689 goto nla_put_failure; 6690 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 6691 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_BUSY, 6692 survey->time_busy)) 6693 goto nla_put_failure; 6694 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 6695 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 6696 survey->time_ext_busy)) 6697 goto nla_put_failure; 6698 if ((survey->filled & SURVEY_INFO_TIME_RX) && 6699 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_RX, 6700 survey->time_rx)) 6701 goto nla_put_failure; 6702 if ((survey->filled & SURVEY_INFO_TIME_TX) && 6703 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_TX, 6704 survey->time_tx)) 6705 goto nla_put_failure; 6706 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 6707 nla_put_u64(msg, NL80211_SURVEY_INFO_TIME_SCAN, 6708 survey->time_scan)) 6709 goto nla_put_failure; 6710 6711 nla_nest_end(msg, infoattr); 6712 6713 genlmsg_end(msg, hdr); 6714 return 0; 6715 6716 nla_put_failure: 6717 genlmsg_cancel(msg, hdr); 6718 return -EMSGSIZE; 6719 } 6720 6721 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 6722 { 6723 struct survey_info survey; 6724 struct cfg80211_registered_device *rdev; 6725 struct wireless_dev *wdev; 6726 int survey_idx = cb->args[2]; 6727 int res; 6728 bool radio_stats; 6729 6730 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6731 if (res) 6732 return res; 6733 6734 /* prepare_wdev_dump parsed the attributes */ 6735 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 6736 6737 if (!wdev->netdev) { 6738 res = -EINVAL; 6739 goto out_err; 6740 } 6741 6742 if (!rdev->ops->dump_survey) { 6743 res = -EOPNOTSUPP; 6744 goto out_err; 6745 } 6746 6747 while (1) { 6748 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6749 if (res == -ENOENT) 6750 break; 6751 if (res) 6752 goto out_err; 6753 6754 /* don't send disabled channels, but do send non-channel data */ 6755 if (survey.channel && 6756 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6757 survey_idx++; 6758 continue; 6759 } 6760 6761 if (nl80211_send_survey(skb, 6762 NETLINK_CB(cb->skb).portid, 6763 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6764 wdev->netdev, radio_stats, &survey) < 0) 6765 goto out; 6766 survey_idx++; 6767 } 6768 6769 out: 6770 cb->args[2] = survey_idx; 6771 res = skb->len; 6772 out_err: 6773 nl80211_finish_wdev_dump(rdev); 6774 return res; 6775 } 6776 6777 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6778 { 6779 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6780 NL80211_WPA_VERSION_2)); 6781 } 6782 6783 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6784 { 6785 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6786 struct net_device *dev = info->user_ptr[1]; 6787 struct ieee80211_channel *chan; 6788 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6789 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6790 enum nl80211_auth_type auth_type; 6791 struct key_parse key; 6792 bool local_state_change; 6793 6794 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6795 return -EINVAL; 6796 6797 if (!info->attrs[NL80211_ATTR_MAC]) 6798 return -EINVAL; 6799 6800 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6801 return -EINVAL; 6802 6803 if (!info->attrs[NL80211_ATTR_SSID]) 6804 return -EINVAL; 6805 6806 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6807 return -EINVAL; 6808 6809 err = nl80211_parse_key(info, &key); 6810 if (err) 6811 return err; 6812 6813 if (key.idx >= 0) { 6814 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6815 return -EINVAL; 6816 if (!key.p.key || !key.p.key_len) 6817 return -EINVAL; 6818 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6819 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6820 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6821 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6822 return -EINVAL; 6823 if (key.idx > 4) 6824 return -EINVAL; 6825 } else { 6826 key.p.key_len = 0; 6827 key.p.key = NULL; 6828 } 6829 6830 if (key.idx >= 0) { 6831 int i; 6832 bool ok = false; 6833 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6834 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6835 ok = true; 6836 break; 6837 } 6838 } 6839 if (!ok) 6840 return -EINVAL; 6841 } 6842 6843 if (!rdev->ops->auth) 6844 return -EOPNOTSUPP; 6845 6846 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6847 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6848 return -EOPNOTSUPP; 6849 6850 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6851 chan = nl80211_get_valid_chan(&rdev->wiphy, 6852 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6853 if (!chan) 6854 return -EINVAL; 6855 6856 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6857 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6858 6859 if (info->attrs[NL80211_ATTR_IE]) { 6860 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6861 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6862 } 6863 6864 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6865 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6866 return -EINVAL; 6867 6868 if (auth_type == NL80211_AUTHTYPE_SAE && 6869 !info->attrs[NL80211_ATTR_SAE_DATA]) 6870 return -EINVAL; 6871 6872 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6873 if (auth_type != NL80211_AUTHTYPE_SAE) 6874 return -EINVAL; 6875 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6876 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6877 /* need to include at least Auth Transaction and Status Code */ 6878 if (sae_data_len < 4) 6879 return -EINVAL; 6880 } 6881 6882 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6883 6884 /* 6885 * Since we no longer track auth state, ignore 6886 * requests to only change local state. 6887 */ 6888 if (local_state_change) 6889 return 0; 6890 6891 wdev_lock(dev->ieee80211_ptr); 6892 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6893 ssid, ssid_len, ie, ie_len, 6894 key.p.key, key.p.key_len, key.idx, 6895 sae_data, sae_data_len); 6896 wdev_unlock(dev->ieee80211_ptr); 6897 return err; 6898 } 6899 6900 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6901 struct genl_info *info, 6902 struct cfg80211_crypto_settings *settings, 6903 int cipher_limit) 6904 { 6905 memset(settings, 0, sizeof(*settings)); 6906 6907 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6908 6909 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6910 u16 proto; 6911 proto = nla_get_u16( 6912 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6913 settings->control_port_ethertype = cpu_to_be16(proto); 6914 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6915 proto != ETH_P_PAE) 6916 return -EINVAL; 6917 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6918 settings->control_port_no_encrypt = true; 6919 } else 6920 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6921 6922 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6923 void *data; 6924 int len, i; 6925 6926 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6927 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6928 settings->n_ciphers_pairwise = len / sizeof(u32); 6929 6930 if (len % sizeof(u32)) 6931 return -EINVAL; 6932 6933 if (settings->n_ciphers_pairwise > cipher_limit) 6934 return -EINVAL; 6935 6936 memcpy(settings->ciphers_pairwise, data, len); 6937 6938 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6939 if (!cfg80211_supported_cipher_suite( 6940 &rdev->wiphy, 6941 settings->ciphers_pairwise[i])) 6942 return -EINVAL; 6943 } 6944 6945 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6946 settings->cipher_group = 6947 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6948 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6949 settings->cipher_group)) 6950 return -EINVAL; 6951 } 6952 6953 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6954 settings->wpa_versions = 6955 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6956 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6957 return -EINVAL; 6958 } 6959 6960 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6961 void *data; 6962 int len; 6963 6964 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6965 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6966 settings->n_akm_suites = len / sizeof(u32); 6967 6968 if (len % sizeof(u32)) 6969 return -EINVAL; 6970 6971 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6972 return -EINVAL; 6973 6974 memcpy(settings->akm_suites, data, len); 6975 } 6976 6977 return 0; 6978 } 6979 6980 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6981 { 6982 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6983 struct net_device *dev = info->user_ptr[1]; 6984 struct ieee80211_channel *chan; 6985 struct cfg80211_assoc_request req = {}; 6986 const u8 *bssid, *ssid; 6987 int err, ssid_len = 0; 6988 6989 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6990 return -EINVAL; 6991 6992 if (!info->attrs[NL80211_ATTR_MAC] || 6993 !info->attrs[NL80211_ATTR_SSID] || 6994 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6995 return -EINVAL; 6996 6997 if (!rdev->ops->assoc) 6998 return -EOPNOTSUPP; 6999 7000 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7001 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7002 return -EOPNOTSUPP; 7003 7004 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7005 7006 chan = nl80211_get_valid_chan(&rdev->wiphy, 7007 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7008 if (!chan) 7009 return -EINVAL; 7010 7011 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7012 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7013 7014 if (info->attrs[NL80211_ATTR_IE]) { 7015 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7016 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7017 } 7018 7019 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7020 enum nl80211_mfp mfp = 7021 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7022 if (mfp == NL80211_MFP_REQUIRED) 7023 req.use_mfp = true; 7024 else if (mfp != NL80211_MFP_NO) 7025 return -EINVAL; 7026 } 7027 7028 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7029 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7030 7031 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7032 req.flags |= ASSOC_REQ_DISABLE_HT; 7033 7034 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7035 memcpy(&req.ht_capa_mask, 7036 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7037 sizeof(req.ht_capa_mask)); 7038 7039 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7040 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7041 return -EINVAL; 7042 memcpy(&req.ht_capa, 7043 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7044 sizeof(req.ht_capa)); 7045 } 7046 7047 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7048 req.flags |= ASSOC_REQ_DISABLE_VHT; 7049 7050 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7051 memcpy(&req.vht_capa_mask, 7052 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7053 sizeof(req.vht_capa_mask)); 7054 7055 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7056 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7057 return -EINVAL; 7058 memcpy(&req.vht_capa, 7059 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7060 sizeof(req.vht_capa)); 7061 } 7062 7063 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7064 if (!(rdev->wiphy.features & 7065 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7066 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7067 return -EINVAL; 7068 req.flags |= ASSOC_REQ_USE_RRM; 7069 } 7070 7071 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7072 if (!err) { 7073 wdev_lock(dev->ieee80211_ptr); 7074 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7075 ssid, ssid_len, &req); 7076 wdev_unlock(dev->ieee80211_ptr); 7077 } 7078 7079 return err; 7080 } 7081 7082 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7083 { 7084 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7085 struct net_device *dev = info->user_ptr[1]; 7086 const u8 *ie = NULL, *bssid; 7087 int ie_len = 0, err; 7088 u16 reason_code; 7089 bool local_state_change; 7090 7091 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7092 return -EINVAL; 7093 7094 if (!info->attrs[NL80211_ATTR_MAC]) 7095 return -EINVAL; 7096 7097 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7098 return -EINVAL; 7099 7100 if (!rdev->ops->deauth) 7101 return -EOPNOTSUPP; 7102 7103 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7104 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7105 return -EOPNOTSUPP; 7106 7107 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7108 7109 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7110 if (reason_code == 0) { 7111 /* Reason Code 0 is reserved */ 7112 return -EINVAL; 7113 } 7114 7115 if (info->attrs[NL80211_ATTR_IE]) { 7116 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7117 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7118 } 7119 7120 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7121 7122 wdev_lock(dev->ieee80211_ptr); 7123 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7124 local_state_change); 7125 wdev_unlock(dev->ieee80211_ptr); 7126 return err; 7127 } 7128 7129 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7130 { 7131 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7132 struct net_device *dev = info->user_ptr[1]; 7133 const u8 *ie = NULL, *bssid; 7134 int ie_len = 0, err; 7135 u16 reason_code; 7136 bool local_state_change; 7137 7138 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7139 return -EINVAL; 7140 7141 if (!info->attrs[NL80211_ATTR_MAC]) 7142 return -EINVAL; 7143 7144 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7145 return -EINVAL; 7146 7147 if (!rdev->ops->disassoc) 7148 return -EOPNOTSUPP; 7149 7150 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7151 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7152 return -EOPNOTSUPP; 7153 7154 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7155 7156 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7157 if (reason_code == 0) { 7158 /* Reason Code 0 is reserved */ 7159 return -EINVAL; 7160 } 7161 7162 if (info->attrs[NL80211_ATTR_IE]) { 7163 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7164 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7165 } 7166 7167 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7168 7169 wdev_lock(dev->ieee80211_ptr); 7170 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7171 local_state_change); 7172 wdev_unlock(dev->ieee80211_ptr); 7173 return err; 7174 } 7175 7176 static bool 7177 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7178 int mcast_rate[IEEE80211_NUM_BANDS], 7179 int rateval) 7180 { 7181 struct wiphy *wiphy = &rdev->wiphy; 7182 bool found = false; 7183 int band, i; 7184 7185 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7186 struct ieee80211_supported_band *sband; 7187 7188 sband = wiphy->bands[band]; 7189 if (!sband) 7190 continue; 7191 7192 for (i = 0; i < sband->n_bitrates; i++) { 7193 if (sband->bitrates[i].bitrate == rateval) { 7194 mcast_rate[band] = i + 1; 7195 found = true; 7196 break; 7197 } 7198 } 7199 } 7200 7201 return found; 7202 } 7203 7204 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7205 { 7206 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7207 struct net_device *dev = info->user_ptr[1]; 7208 struct cfg80211_ibss_params ibss; 7209 struct wiphy *wiphy; 7210 struct cfg80211_cached_keys *connkeys = NULL; 7211 int err; 7212 7213 memset(&ibss, 0, sizeof(ibss)); 7214 7215 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7216 return -EINVAL; 7217 7218 if (!info->attrs[NL80211_ATTR_SSID] || 7219 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7220 return -EINVAL; 7221 7222 ibss.beacon_interval = 100; 7223 7224 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7225 ibss.beacon_interval = 7226 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7227 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7228 return -EINVAL; 7229 } 7230 7231 if (!rdev->ops->join_ibss) 7232 return -EOPNOTSUPP; 7233 7234 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7235 return -EOPNOTSUPP; 7236 7237 wiphy = &rdev->wiphy; 7238 7239 if (info->attrs[NL80211_ATTR_MAC]) { 7240 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7241 7242 if (!is_valid_ether_addr(ibss.bssid)) 7243 return -EINVAL; 7244 } 7245 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7246 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7247 7248 if (info->attrs[NL80211_ATTR_IE]) { 7249 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7250 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7251 } 7252 7253 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7254 if (err) 7255 return err; 7256 7257 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7258 NL80211_IFTYPE_ADHOC)) 7259 return -EINVAL; 7260 7261 switch (ibss.chandef.width) { 7262 case NL80211_CHAN_WIDTH_5: 7263 case NL80211_CHAN_WIDTH_10: 7264 case NL80211_CHAN_WIDTH_20_NOHT: 7265 break; 7266 case NL80211_CHAN_WIDTH_20: 7267 case NL80211_CHAN_WIDTH_40: 7268 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 7269 break; 7270 default: 7271 return -EINVAL; 7272 } 7273 7274 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7275 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7276 7277 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7278 u8 *rates = 7279 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7280 int n_rates = 7281 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7282 struct ieee80211_supported_band *sband = 7283 wiphy->bands[ibss.chandef.chan->band]; 7284 7285 err = ieee80211_get_ratemask(sband, rates, n_rates, 7286 &ibss.basic_rates); 7287 if (err) 7288 return err; 7289 } 7290 7291 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7292 memcpy(&ibss.ht_capa_mask, 7293 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7294 sizeof(ibss.ht_capa_mask)); 7295 7296 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7297 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7298 return -EINVAL; 7299 memcpy(&ibss.ht_capa, 7300 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7301 sizeof(ibss.ht_capa)); 7302 } 7303 7304 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7305 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7306 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7307 return -EINVAL; 7308 7309 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7310 bool no_ht = false; 7311 7312 connkeys = nl80211_parse_connkeys(rdev, 7313 info->attrs[NL80211_ATTR_KEYS], 7314 &no_ht); 7315 if (IS_ERR(connkeys)) 7316 return PTR_ERR(connkeys); 7317 7318 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7319 no_ht) { 7320 kfree(connkeys); 7321 return -EINVAL; 7322 } 7323 } 7324 7325 ibss.control_port = 7326 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7327 7328 ibss.userspace_handles_dfs = 7329 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7330 7331 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7332 if (err) 7333 kzfree(connkeys); 7334 return err; 7335 } 7336 7337 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7338 { 7339 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7340 struct net_device *dev = info->user_ptr[1]; 7341 7342 if (!rdev->ops->leave_ibss) 7343 return -EOPNOTSUPP; 7344 7345 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7346 return -EOPNOTSUPP; 7347 7348 return cfg80211_leave_ibss(rdev, dev, false); 7349 } 7350 7351 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7352 { 7353 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7354 struct net_device *dev = info->user_ptr[1]; 7355 int mcast_rate[IEEE80211_NUM_BANDS]; 7356 u32 nla_rate; 7357 int err; 7358 7359 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7360 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 7361 return -EOPNOTSUPP; 7362 7363 if (!rdev->ops->set_mcast_rate) 7364 return -EOPNOTSUPP; 7365 7366 memset(mcast_rate, 0, sizeof(mcast_rate)); 7367 7368 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7369 return -EINVAL; 7370 7371 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7372 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7373 return -EINVAL; 7374 7375 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 7376 7377 return err; 7378 } 7379 7380 static struct sk_buff * 7381 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7382 int approxlen, u32 portid, u32 seq, 7383 enum nl80211_commands cmd, 7384 enum nl80211_attrs attr, 7385 const struct nl80211_vendor_cmd_info *info, 7386 gfp_t gfp) 7387 { 7388 struct sk_buff *skb; 7389 void *hdr; 7390 struct nlattr *data; 7391 7392 skb = nlmsg_new(approxlen + 100, gfp); 7393 if (!skb) 7394 return NULL; 7395 7396 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7397 if (!hdr) { 7398 kfree_skb(skb); 7399 return NULL; 7400 } 7401 7402 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7403 goto nla_put_failure; 7404 7405 if (info) { 7406 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7407 info->vendor_id)) 7408 goto nla_put_failure; 7409 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7410 info->subcmd)) 7411 goto nla_put_failure; 7412 } 7413 7414 data = nla_nest_start(skb, attr); 7415 7416 ((void **)skb->cb)[0] = rdev; 7417 ((void **)skb->cb)[1] = hdr; 7418 ((void **)skb->cb)[2] = data; 7419 7420 return skb; 7421 7422 nla_put_failure: 7423 kfree_skb(skb); 7424 return NULL; 7425 } 7426 7427 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7428 enum nl80211_commands cmd, 7429 enum nl80211_attrs attr, 7430 int vendor_event_idx, 7431 int approxlen, gfp_t gfp) 7432 { 7433 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7434 const struct nl80211_vendor_cmd_info *info; 7435 7436 switch (cmd) { 7437 case NL80211_CMD_TESTMODE: 7438 if (WARN_ON(vendor_event_idx != -1)) 7439 return NULL; 7440 info = NULL; 7441 break; 7442 case NL80211_CMD_VENDOR: 7443 if (WARN_ON(vendor_event_idx < 0 || 7444 vendor_event_idx >= wiphy->n_vendor_events)) 7445 return NULL; 7446 info = &wiphy->vendor_events[vendor_event_idx]; 7447 break; 7448 default: 7449 WARN_ON(1); 7450 return NULL; 7451 } 7452 7453 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0, 7454 cmd, attr, info, gfp); 7455 } 7456 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7457 7458 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7459 { 7460 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7461 void *hdr = ((void **)skb->cb)[1]; 7462 struct nlattr *data = ((void **)skb->cb)[2]; 7463 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7464 7465 /* clear CB data for netlink core to own from now on */ 7466 memset(skb->cb, 0, sizeof(skb->cb)); 7467 7468 nla_nest_end(skb, data); 7469 genlmsg_end(skb, hdr); 7470 7471 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7472 mcgrp = NL80211_MCGRP_VENDOR; 7473 7474 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7475 mcgrp, gfp); 7476 } 7477 EXPORT_SYMBOL(__cfg80211_send_event_skb); 7478 7479 #ifdef CONFIG_NL80211_TESTMODE 7480 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7481 { 7482 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7483 struct wireless_dev *wdev = 7484 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7485 int err; 7486 7487 if (!rdev->ops->testmode_cmd) 7488 return -EOPNOTSUPP; 7489 7490 if (IS_ERR(wdev)) { 7491 err = PTR_ERR(wdev); 7492 if (err != -EINVAL) 7493 return err; 7494 wdev = NULL; 7495 } else if (wdev->wiphy != &rdev->wiphy) { 7496 return -EINVAL; 7497 } 7498 7499 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7500 return -EINVAL; 7501 7502 rdev->cur_cmd_info = info; 7503 err = rdev_testmode_cmd(rdev, wdev, 7504 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7505 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7506 rdev->cur_cmd_info = NULL; 7507 7508 return err; 7509 } 7510 7511 static int nl80211_testmode_dump(struct sk_buff *skb, 7512 struct netlink_callback *cb) 7513 { 7514 struct cfg80211_registered_device *rdev; 7515 int err; 7516 long phy_idx; 7517 void *data = NULL; 7518 int data_len = 0; 7519 7520 rtnl_lock(); 7521 7522 if (cb->args[0]) { 7523 /* 7524 * 0 is a valid index, but not valid for args[0], 7525 * so we need to offset by 1. 7526 */ 7527 phy_idx = cb->args[0] - 1; 7528 } else { 7529 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7530 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7531 nl80211_policy); 7532 if (err) 7533 goto out_err; 7534 7535 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7536 nl80211_fam.attrbuf); 7537 if (IS_ERR(rdev)) { 7538 err = PTR_ERR(rdev); 7539 goto out_err; 7540 } 7541 phy_idx = rdev->wiphy_idx; 7542 rdev = NULL; 7543 7544 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7545 cb->args[1] = 7546 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7547 } 7548 7549 if (cb->args[1]) { 7550 data = nla_data((void *)cb->args[1]); 7551 data_len = nla_len((void *)cb->args[1]); 7552 } 7553 7554 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7555 if (!rdev) { 7556 err = -ENOENT; 7557 goto out_err; 7558 } 7559 7560 if (!rdev->ops->testmode_dump) { 7561 err = -EOPNOTSUPP; 7562 goto out_err; 7563 } 7564 7565 while (1) { 7566 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7567 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7568 NL80211_CMD_TESTMODE); 7569 struct nlattr *tmdata; 7570 7571 if (!hdr) 7572 break; 7573 7574 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7575 genlmsg_cancel(skb, hdr); 7576 break; 7577 } 7578 7579 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7580 if (!tmdata) { 7581 genlmsg_cancel(skb, hdr); 7582 break; 7583 } 7584 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7585 nla_nest_end(skb, tmdata); 7586 7587 if (err == -ENOBUFS || err == -ENOENT) { 7588 genlmsg_cancel(skb, hdr); 7589 break; 7590 } else if (err) { 7591 genlmsg_cancel(skb, hdr); 7592 goto out_err; 7593 } 7594 7595 genlmsg_end(skb, hdr); 7596 } 7597 7598 err = skb->len; 7599 /* see above */ 7600 cb->args[0] = phy_idx + 1; 7601 out_err: 7602 rtnl_unlock(); 7603 return err; 7604 } 7605 #endif 7606 7607 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7608 { 7609 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7610 struct net_device *dev = info->user_ptr[1]; 7611 struct cfg80211_connect_params connect; 7612 struct wiphy *wiphy; 7613 struct cfg80211_cached_keys *connkeys = NULL; 7614 int err; 7615 7616 memset(&connect, 0, sizeof(connect)); 7617 7618 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7619 return -EINVAL; 7620 7621 if (!info->attrs[NL80211_ATTR_SSID] || 7622 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7623 return -EINVAL; 7624 7625 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7626 connect.auth_type = 7627 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7628 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7629 NL80211_CMD_CONNECT)) 7630 return -EINVAL; 7631 } else 7632 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7633 7634 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7635 7636 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7637 NL80211_MAX_NR_CIPHER_SUITES); 7638 if (err) 7639 return err; 7640 7641 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7642 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7643 return -EOPNOTSUPP; 7644 7645 wiphy = &rdev->wiphy; 7646 7647 connect.bg_scan_period = -1; 7648 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7649 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7650 connect.bg_scan_period = 7651 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7652 } 7653 7654 if (info->attrs[NL80211_ATTR_MAC]) 7655 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7656 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7657 connect.bssid_hint = 7658 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7659 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7660 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7661 7662 if (info->attrs[NL80211_ATTR_IE]) { 7663 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7664 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7665 } 7666 7667 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7668 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7669 if (connect.mfp != NL80211_MFP_REQUIRED && 7670 connect.mfp != NL80211_MFP_NO) 7671 return -EINVAL; 7672 } else { 7673 connect.mfp = NL80211_MFP_NO; 7674 } 7675 7676 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7677 connect.channel = nl80211_get_valid_chan( 7678 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7679 if (!connect.channel) 7680 return -EINVAL; 7681 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7682 connect.channel_hint = nl80211_get_valid_chan( 7683 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7684 if (!connect.channel_hint) 7685 return -EINVAL; 7686 } 7687 7688 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7689 connkeys = nl80211_parse_connkeys(rdev, 7690 info->attrs[NL80211_ATTR_KEYS], NULL); 7691 if (IS_ERR(connkeys)) 7692 return PTR_ERR(connkeys); 7693 } 7694 7695 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7696 connect.flags |= ASSOC_REQ_DISABLE_HT; 7697 7698 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7699 memcpy(&connect.ht_capa_mask, 7700 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7701 sizeof(connect.ht_capa_mask)); 7702 7703 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7704 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7705 kzfree(connkeys); 7706 return -EINVAL; 7707 } 7708 memcpy(&connect.ht_capa, 7709 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7710 sizeof(connect.ht_capa)); 7711 } 7712 7713 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7714 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7715 7716 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7717 memcpy(&connect.vht_capa_mask, 7718 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7719 sizeof(connect.vht_capa_mask)); 7720 7721 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7722 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7723 kzfree(connkeys); 7724 return -EINVAL; 7725 } 7726 memcpy(&connect.vht_capa, 7727 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7728 sizeof(connect.vht_capa)); 7729 } 7730 7731 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7732 if (!(rdev->wiphy.features & 7733 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7734 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7735 return -EINVAL; 7736 connect.flags |= ASSOC_REQ_USE_RRM; 7737 } 7738 7739 wdev_lock(dev->ieee80211_ptr); 7740 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7741 wdev_unlock(dev->ieee80211_ptr); 7742 if (err) 7743 kzfree(connkeys); 7744 return err; 7745 } 7746 7747 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7748 { 7749 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7750 struct net_device *dev = info->user_ptr[1]; 7751 u16 reason; 7752 int ret; 7753 7754 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7755 reason = WLAN_REASON_DEAUTH_LEAVING; 7756 else 7757 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7758 7759 if (reason == 0) 7760 return -EINVAL; 7761 7762 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7763 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7764 return -EOPNOTSUPP; 7765 7766 wdev_lock(dev->ieee80211_ptr); 7767 ret = cfg80211_disconnect(rdev, dev, reason, true); 7768 wdev_unlock(dev->ieee80211_ptr); 7769 return ret; 7770 } 7771 7772 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7773 { 7774 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7775 struct net *net; 7776 int err; 7777 7778 if (info->attrs[NL80211_ATTR_PID]) { 7779 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7780 7781 net = get_net_ns_by_pid(pid); 7782 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 7783 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 7784 7785 net = get_net_ns_by_fd(fd); 7786 } else { 7787 return -EINVAL; 7788 } 7789 7790 if (IS_ERR(net)) 7791 return PTR_ERR(net); 7792 7793 err = 0; 7794 7795 /* check if anything to do */ 7796 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7797 err = cfg80211_switch_netns(rdev, net); 7798 7799 put_net(net); 7800 return err; 7801 } 7802 7803 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7804 { 7805 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7806 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7807 struct cfg80211_pmksa *pmksa) = NULL; 7808 struct net_device *dev = info->user_ptr[1]; 7809 struct cfg80211_pmksa pmksa; 7810 7811 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7812 7813 if (!info->attrs[NL80211_ATTR_MAC]) 7814 return -EINVAL; 7815 7816 if (!info->attrs[NL80211_ATTR_PMKID]) 7817 return -EINVAL; 7818 7819 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7820 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7821 7822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7824 return -EOPNOTSUPP; 7825 7826 switch (info->genlhdr->cmd) { 7827 case NL80211_CMD_SET_PMKSA: 7828 rdev_ops = rdev->ops->set_pmksa; 7829 break; 7830 case NL80211_CMD_DEL_PMKSA: 7831 rdev_ops = rdev->ops->del_pmksa; 7832 break; 7833 default: 7834 WARN_ON(1); 7835 break; 7836 } 7837 7838 if (!rdev_ops) 7839 return -EOPNOTSUPP; 7840 7841 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7842 } 7843 7844 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7845 { 7846 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7847 struct net_device *dev = info->user_ptr[1]; 7848 7849 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7850 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7851 return -EOPNOTSUPP; 7852 7853 if (!rdev->ops->flush_pmksa) 7854 return -EOPNOTSUPP; 7855 7856 return rdev_flush_pmksa(rdev, dev); 7857 } 7858 7859 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7860 { 7861 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7862 struct net_device *dev = info->user_ptr[1]; 7863 u8 action_code, dialog_token; 7864 u32 peer_capability = 0; 7865 u16 status_code; 7866 u8 *peer; 7867 bool initiator; 7868 7869 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7870 !rdev->ops->tdls_mgmt) 7871 return -EOPNOTSUPP; 7872 7873 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7874 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7875 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7876 !info->attrs[NL80211_ATTR_IE] || 7877 !info->attrs[NL80211_ATTR_MAC]) 7878 return -EINVAL; 7879 7880 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7881 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7882 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7883 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7884 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 7885 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 7886 peer_capability = 7887 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 7888 7889 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7890 dialog_token, status_code, peer_capability, 7891 initiator, 7892 nla_data(info->attrs[NL80211_ATTR_IE]), 7893 nla_len(info->attrs[NL80211_ATTR_IE])); 7894 } 7895 7896 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7897 { 7898 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7899 struct net_device *dev = info->user_ptr[1]; 7900 enum nl80211_tdls_operation operation; 7901 u8 *peer; 7902 7903 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7904 !rdev->ops->tdls_oper) 7905 return -EOPNOTSUPP; 7906 7907 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7908 !info->attrs[NL80211_ATTR_MAC]) 7909 return -EINVAL; 7910 7911 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7912 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7913 7914 return rdev_tdls_oper(rdev, dev, peer, operation); 7915 } 7916 7917 static int nl80211_remain_on_channel(struct sk_buff *skb, 7918 struct genl_info *info) 7919 { 7920 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7921 struct wireless_dev *wdev = info->user_ptr[1]; 7922 struct cfg80211_chan_def chandef; 7923 struct sk_buff *msg; 7924 void *hdr; 7925 u64 cookie; 7926 u32 duration; 7927 int err; 7928 7929 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7930 !info->attrs[NL80211_ATTR_DURATION]) 7931 return -EINVAL; 7932 7933 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7934 7935 if (!rdev->ops->remain_on_channel || 7936 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7937 return -EOPNOTSUPP; 7938 7939 /* 7940 * We should be on that channel for at least a minimum amount of 7941 * time (10ms) but no longer than the driver supports. 7942 */ 7943 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7944 duration > rdev->wiphy.max_remain_on_channel_duration) 7945 return -EINVAL; 7946 7947 err = nl80211_parse_chandef(rdev, info, &chandef); 7948 if (err) 7949 return err; 7950 7951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7952 if (!msg) 7953 return -ENOMEM; 7954 7955 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7956 NL80211_CMD_REMAIN_ON_CHANNEL); 7957 if (!hdr) { 7958 err = -ENOBUFS; 7959 goto free_msg; 7960 } 7961 7962 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7963 duration, &cookie); 7964 7965 if (err) 7966 goto free_msg; 7967 7968 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7969 goto nla_put_failure; 7970 7971 genlmsg_end(msg, hdr); 7972 7973 return genlmsg_reply(msg, info); 7974 7975 nla_put_failure: 7976 err = -ENOBUFS; 7977 free_msg: 7978 nlmsg_free(msg); 7979 return err; 7980 } 7981 7982 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7983 struct genl_info *info) 7984 { 7985 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7986 struct wireless_dev *wdev = info->user_ptr[1]; 7987 u64 cookie; 7988 7989 if (!info->attrs[NL80211_ATTR_COOKIE]) 7990 return -EINVAL; 7991 7992 if (!rdev->ops->cancel_remain_on_channel) 7993 return -EOPNOTSUPP; 7994 7995 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7996 7997 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 7998 } 7999 8000 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8001 u8 *rates, u8 rates_len) 8002 { 8003 u8 i; 8004 u32 mask = 0; 8005 8006 for (i = 0; i < rates_len; i++) { 8007 int rate = (rates[i] & 0x7f) * 5; 8008 int ridx; 8009 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8010 struct ieee80211_rate *srate = 8011 &sband->bitrates[ridx]; 8012 if (rate == srate->bitrate) { 8013 mask |= 1 << ridx; 8014 break; 8015 } 8016 } 8017 if (ridx == sband->n_bitrates) 8018 return 0; /* rate not found */ 8019 } 8020 8021 return mask; 8022 } 8023 8024 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8025 u8 *rates, u8 rates_len, 8026 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8027 { 8028 u8 i; 8029 8030 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8031 8032 for (i = 0; i < rates_len; i++) { 8033 int ridx, rbit; 8034 8035 ridx = rates[i] / 8; 8036 rbit = BIT(rates[i] % 8); 8037 8038 /* check validity */ 8039 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8040 return false; 8041 8042 /* check availability */ 8043 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8044 mcs[ridx] |= rbit; 8045 else 8046 return false; 8047 } 8048 8049 return true; 8050 } 8051 8052 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8053 { 8054 u16 mcs_mask = 0; 8055 8056 switch (vht_mcs_map) { 8057 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8058 break; 8059 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8060 mcs_mask = 0x00FF; 8061 break; 8062 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8063 mcs_mask = 0x01FF; 8064 break; 8065 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8066 mcs_mask = 0x03FF; 8067 break; 8068 default: 8069 break; 8070 } 8071 8072 return mcs_mask; 8073 } 8074 8075 static void vht_build_mcs_mask(u16 vht_mcs_map, 8076 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8077 { 8078 u8 nss; 8079 8080 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8081 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8082 vht_mcs_map >>= 2; 8083 } 8084 } 8085 8086 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8087 struct nl80211_txrate_vht *txrate, 8088 u16 mcs[NL80211_VHT_NSS_MAX]) 8089 { 8090 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8091 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8092 u8 i; 8093 8094 if (!sband->vht_cap.vht_supported) 8095 return false; 8096 8097 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8098 8099 /* Build vht_mcs_mask from VHT capabilities */ 8100 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8101 8102 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8103 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8104 mcs[i] = txrate->mcs[i]; 8105 else 8106 return false; 8107 } 8108 8109 return true; 8110 } 8111 8112 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8113 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8114 .len = NL80211_MAX_SUPP_RATES }, 8115 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8116 .len = NL80211_MAX_SUPP_HT_RATES }, 8117 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8118 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8119 }; 8120 8121 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8122 struct genl_info *info) 8123 { 8124 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8125 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8126 struct cfg80211_bitrate_mask mask; 8127 int rem, i; 8128 struct net_device *dev = info->user_ptr[1]; 8129 struct nlattr *tx_rates; 8130 struct ieee80211_supported_band *sband; 8131 u16 vht_tx_mcs_map; 8132 8133 if (!rdev->ops->set_bitrate_mask) 8134 return -EOPNOTSUPP; 8135 8136 memset(&mask, 0, sizeof(mask)); 8137 /* Default to all rates enabled */ 8138 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 8139 sband = rdev->wiphy.bands[i]; 8140 8141 if (!sband) 8142 continue; 8143 8144 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8145 memcpy(mask.control[i].ht_mcs, 8146 sband->ht_cap.mcs.rx_mask, 8147 sizeof(mask.control[i].ht_mcs)); 8148 8149 if (!sband->vht_cap.vht_supported) 8150 continue; 8151 8152 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8153 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8154 } 8155 8156 /* if no rates are given set it back to the defaults */ 8157 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8158 goto out; 8159 8160 /* 8161 * The nested attribute uses enum nl80211_band as the index. This maps 8162 * directly to the enum ieee80211_band values used in cfg80211. 8163 */ 8164 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8165 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8166 enum ieee80211_band band = nla_type(tx_rates); 8167 int err; 8168 8169 if (band < 0 || band >= IEEE80211_NUM_BANDS) 8170 return -EINVAL; 8171 sband = rdev->wiphy.bands[band]; 8172 if (sband == NULL) 8173 return -EINVAL; 8174 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8175 nla_len(tx_rates), nl80211_txattr_policy); 8176 if (err) 8177 return err; 8178 if (tb[NL80211_TXRATE_LEGACY]) { 8179 mask.control[band].legacy = rateset_to_mask( 8180 sband, 8181 nla_data(tb[NL80211_TXRATE_LEGACY]), 8182 nla_len(tb[NL80211_TXRATE_LEGACY])); 8183 if ((mask.control[band].legacy == 0) && 8184 nla_len(tb[NL80211_TXRATE_LEGACY])) 8185 return -EINVAL; 8186 } 8187 if (tb[NL80211_TXRATE_HT]) { 8188 if (!ht_rateset_to_mask( 8189 sband, 8190 nla_data(tb[NL80211_TXRATE_HT]), 8191 nla_len(tb[NL80211_TXRATE_HT]), 8192 mask.control[band].ht_mcs)) 8193 return -EINVAL; 8194 } 8195 if (tb[NL80211_TXRATE_VHT]) { 8196 if (!vht_set_mcs_mask( 8197 sband, 8198 nla_data(tb[NL80211_TXRATE_VHT]), 8199 mask.control[band].vht_mcs)) 8200 return -EINVAL; 8201 } 8202 if (tb[NL80211_TXRATE_GI]) { 8203 mask.control[band].gi = 8204 nla_get_u8(tb[NL80211_TXRATE_GI]); 8205 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8206 return -EINVAL; 8207 } 8208 8209 if (mask.control[band].legacy == 0) { 8210 /* don't allow empty legacy rates if HT or VHT 8211 * are not even supported. 8212 */ 8213 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8214 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8215 return -EINVAL; 8216 8217 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8218 if (mask.control[band].ht_mcs[i]) 8219 goto out; 8220 8221 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8222 if (mask.control[band].vht_mcs[i]) 8223 goto out; 8224 8225 /* legacy and mcs rates may not be both empty */ 8226 return -EINVAL; 8227 } 8228 } 8229 8230 out: 8231 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8232 } 8233 8234 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8235 { 8236 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8237 struct wireless_dev *wdev = info->user_ptr[1]; 8238 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8239 8240 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8241 return -EINVAL; 8242 8243 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8244 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8245 8246 switch (wdev->iftype) { 8247 case NL80211_IFTYPE_STATION: 8248 case NL80211_IFTYPE_ADHOC: 8249 case NL80211_IFTYPE_P2P_CLIENT: 8250 case NL80211_IFTYPE_AP: 8251 case NL80211_IFTYPE_AP_VLAN: 8252 case NL80211_IFTYPE_MESH_POINT: 8253 case NL80211_IFTYPE_P2P_GO: 8254 case NL80211_IFTYPE_P2P_DEVICE: 8255 break; 8256 default: 8257 return -EOPNOTSUPP; 8258 } 8259 8260 /* not much point in registering if we can't reply */ 8261 if (!rdev->ops->mgmt_tx) 8262 return -EOPNOTSUPP; 8263 8264 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8265 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8266 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8267 } 8268 8269 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8270 { 8271 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8272 struct wireless_dev *wdev = info->user_ptr[1]; 8273 struct cfg80211_chan_def chandef; 8274 int err; 8275 void *hdr = NULL; 8276 u64 cookie; 8277 struct sk_buff *msg = NULL; 8278 struct cfg80211_mgmt_tx_params params = { 8279 .dont_wait_for_ack = 8280 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8281 }; 8282 8283 if (!info->attrs[NL80211_ATTR_FRAME]) 8284 return -EINVAL; 8285 8286 if (!rdev->ops->mgmt_tx) 8287 return -EOPNOTSUPP; 8288 8289 switch (wdev->iftype) { 8290 case NL80211_IFTYPE_P2P_DEVICE: 8291 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8292 return -EINVAL; 8293 case NL80211_IFTYPE_STATION: 8294 case NL80211_IFTYPE_ADHOC: 8295 case NL80211_IFTYPE_P2P_CLIENT: 8296 case NL80211_IFTYPE_AP: 8297 case NL80211_IFTYPE_AP_VLAN: 8298 case NL80211_IFTYPE_MESH_POINT: 8299 case NL80211_IFTYPE_P2P_GO: 8300 break; 8301 default: 8302 return -EOPNOTSUPP; 8303 } 8304 8305 if (info->attrs[NL80211_ATTR_DURATION]) { 8306 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8307 return -EINVAL; 8308 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8309 8310 /* 8311 * We should wait on the channel for at least a minimum amount 8312 * of time (10ms) but no longer than the driver supports. 8313 */ 8314 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8315 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8316 return -EINVAL; 8317 8318 } 8319 8320 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8321 8322 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8323 return -EINVAL; 8324 8325 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8326 8327 /* get the channel if any has been specified, otherwise pass NULL to 8328 * the driver. The latter will use the current one 8329 */ 8330 chandef.chan = NULL; 8331 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8332 err = nl80211_parse_chandef(rdev, info, &chandef); 8333 if (err) 8334 return err; 8335 } 8336 8337 if (!chandef.chan && params.offchan) 8338 return -EINVAL; 8339 8340 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8341 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8342 8343 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8344 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8345 int i; 8346 8347 if (len % sizeof(u16)) 8348 return -EINVAL; 8349 8350 params.n_csa_offsets = len / sizeof(u16); 8351 params.csa_offsets = 8352 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8353 8354 /* check that all the offsets fit the frame */ 8355 for (i = 0; i < params.n_csa_offsets; i++) { 8356 if (params.csa_offsets[i] >= params.len) 8357 return -EINVAL; 8358 } 8359 } 8360 8361 if (!params.dont_wait_for_ack) { 8362 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8363 if (!msg) 8364 return -ENOMEM; 8365 8366 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8367 NL80211_CMD_FRAME); 8368 if (!hdr) { 8369 err = -ENOBUFS; 8370 goto free_msg; 8371 } 8372 } 8373 8374 params.chan = chandef.chan; 8375 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8376 if (err) 8377 goto free_msg; 8378 8379 if (msg) { 8380 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8381 goto nla_put_failure; 8382 8383 genlmsg_end(msg, hdr); 8384 return genlmsg_reply(msg, info); 8385 } 8386 8387 return 0; 8388 8389 nla_put_failure: 8390 err = -ENOBUFS; 8391 free_msg: 8392 nlmsg_free(msg); 8393 return err; 8394 } 8395 8396 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8397 { 8398 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8399 struct wireless_dev *wdev = info->user_ptr[1]; 8400 u64 cookie; 8401 8402 if (!info->attrs[NL80211_ATTR_COOKIE]) 8403 return -EINVAL; 8404 8405 if (!rdev->ops->mgmt_tx_cancel_wait) 8406 return -EOPNOTSUPP; 8407 8408 switch (wdev->iftype) { 8409 case NL80211_IFTYPE_STATION: 8410 case NL80211_IFTYPE_ADHOC: 8411 case NL80211_IFTYPE_P2P_CLIENT: 8412 case NL80211_IFTYPE_AP: 8413 case NL80211_IFTYPE_AP_VLAN: 8414 case NL80211_IFTYPE_P2P_GO: 8415 case NL80211_IFTYPE_P2P_DEVICE: 8416 break; 8417 default: 8418 return -EOPNOTSUPP; 8419 } 8420 8421 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8422 8423 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8424 } 8425 8426 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8427 { 8428 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8429 struct wireless_dev *wdev; 8430 struct net_device *dev = info->user_ptr[1]; 8431 u8 ps_state; 8432 bool state; 8433 int err; 8434 8435 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8436 return -EINVAL; 8437 8438 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8439 8440 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8441 return -EINVAL; 8442 8443 wdev = dev->ieee80211_ptr; 8444 8445 if (!rdev->ops->set_power_mgmt) 8446 return -EOPNOTSUPP; 8447 8448 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8449 8450 if (state == wdev->ps) 8451 return 0; 8452 8453 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8454 if (!err) 8455 wdev->ps = state; 8456 return err; 8457 } 8458 8459 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8460 { 8461 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8462 enum nl80211_ps_state ps_state; 8463 struct wireless_dev *wdev; 8464 struct net_device *dev = info->user_ptr[1]; 8465 struct sk_buff *msg; 8466 void *hdr; 8467 int err; 8468 8469 wdev = dev->ieee80211_ptr; 8470 8471 if (!rdev->ops->set_power_mgmt) 8472 return -EOPNOTSUPP; 8473 8474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8475 if (!msg) 8476 return -ENOMEM; 8477 8478 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8479 NL80211_CMD_GET_POWER_SAVE); 8480 if (!hdr) { 8481 err = -ENOBUFS; 8482 goto free_msg; 8483 } 8484 8485 if (wdev->ps) 8486 ps_state = NL80211_PS_ENABLED; 8487 else 8488 ps_state = NL80211_PS_DISABLED; 8489 8490 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8491 goto nla_put_failure; 8492 8493 genlmsg_end(msg, hdr); 8494 return genlmsg_reply(msg, info); 8495 8496 nla_put_failure: 8497 err = -ENOBUFS; 8498 free_msg: 8499 nlmsg_free(msg); 8500 return err; 8501 } 8502 8503 static const struct nla_policy 8504 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8505 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8506 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8507 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8508 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8509 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8510 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8511 }; 8512 8513 static int nl80211_set_cqm_txe(struct genl_info *info, 8514 u32 rate, u32 pkts, u32 intvl) 8515 { 8516 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8517 struct net_device *dev = info->user_ptr[1]; 8518 struct wireless_dev *wdev = dev->ieee80211_ptr; 8519 8520 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8521 return -EINVAL; 8522 8523 if (!rdev->ops->set_cqm_txe_config) 8524 return -EOPNOTSUPP; 8525 8526 if (wdev->iftype != NL80211_IFTYPE_STATION && 8527 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8528 return -EOPNOTSUPP; 8529 8530 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8531 } 8532 8533 static int nl80211_set_cqm_rssi(struct genl_info *info, 8534 s32 threshold, u32 hysteresis) 8535 { 8536 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8537 struct net_device *dev = info->user_ptr[1]; 8538 struct wireless_dev *wdev = dev->ieee80211_ptr; 8539 8540 if (threshold > 0) 8541 return -EINVAL; 8542 8543 /* disabling - hysteresis should also be zero then */ 8544 if (threshold == 0) 8545 hysteresis = 0; 8546 8547 if (!rdev->ops->set_cqm_rssi_config) 8548 return -EOPNOTSUPP; 8549 8550 if (wdev->iftype != NL80211_IFTYPE_STATION && 8551 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8552 return -EOPNOTSUPP; 8553 8554 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8555 } 8556 8557 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8558 { 8559 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8560 struct nlattr *cqm; 8561 int err; 8562 8563 cqm = info->attrs[NL80211_ATTR_CQM]; 8564 if (!cqm) 8565 return -EINVAL; 8566 8567 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8568 nl80211_attr_cqm_policy); 8569 if (err) 8570 return err; 8571 8572 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8573 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8574 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8575 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8576 8577 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8578 } 8579 8580 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8581 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8582 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8583 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8584 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8585 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8586 8587 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8588 } 8589 8590 return -EINVAL; 8591 } 8592 8593 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8594 { 8595 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8596 struct net_device *dev = info->user_ptr[1]; 8597 struct ocb_setup setup = {}; 8598 int err; 8599 8600 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8601 if (err) 8602 return err; 8603 8604 return cfg80211_join_ocb(rdev, dev, &setup); 8605 } 8606 8607 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8608 { 8609 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8610 struct net_device *dev = info->user_ptr[1]; 8611 8612 return cfg80211_leave_ocb(rdev, dev); 8613 } 8614 8615 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8616 { 8617 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8618 struct net_device *dev = info->user_ptr[1]; 8619 struct mesh_config cfg; 8620 struct mesh_setup setup; 8621 int err; 8622 8623 /* start with default */ 8624 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8625 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8626 8627 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8628 /* and parse parameters if given */ 8629 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8630 if (err) 8631 return err; 8632 } 8633 8634 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8635 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8636 return -EINVAL; 8637 8638 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8639 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8640 8641 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8642 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8643 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8644 return -EINVAL; 8645 8646 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8647 setup.beacon_interval = 8648 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8649 if (setup.beacon_interval < 10 || 8650 setup.beacon_interval > 10000) 8651 return -EINVAL; 8652 } 8653 8654 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8655 setup.dtim_period = 8656 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8657 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8658 return -EINVAL; 8659 } 8660 8661 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8662 /* parse additional setup parameters if given */ 8663 err = nl80211_parse_mesh_setup(info, &setup); 8664 if (err) 8665 return err; 8666 } 8667 8668 if (setup.user_mpm) 8669 cfg.auto_open_plinks = false; 8670 8671 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8672 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8673 if (err) 8674 return err; 8675 } else { 8676 /* cfg80211_join_mesh() will sort it out */ 8677 setup.chandef.chan = NULL; 8678 } 8679 8680 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8681 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8682 int n_rates = 8683 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8684 struct ieee80211_supported_band *sband; 8685 8686 if (!setup.chandef.chan) 8687 return -EINVAL; 8688 8689 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8690 8691 err = ieee80211_get_ratemask(sband, rates, n_rates, 8692 &setup.basic_rates); 8693 if (err) 8694 return err; 8695 } 8696 8697 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8698 } 8699 8700 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8701 { 8702 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8703 struct net_device *dev = info->user_ptr[1]; 8704 8705 return cfg80211_leave_mesh(rdev, dev); 8706 } 8707 8708 #ifdef CONFIG_PM 8709 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8710 struct cfg80211_registered_device *rdev) 8711 { 8712 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8713 struct nlattr *nl_pats, *nl_pat; 8714 int i, pat_len; 8715 8716 if (!wowlan->n_patterns) 8717 return 0; 8718 8719 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8720 if (!nl_pats) 8721 return -ENOBUFS; 8722 8723 for (i = 0; i < wowlan->n_patterns; i++) { 8724 nl_pat = nla_nest_start(msg, i + 1); 8725 if (!nl_pat) 8726 return -ENOBUFS; 8727 pat_len = wowlan->patterns[i].pattern_len; 8728 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8729 wowlan->patterns[i].mask) || 8730 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8731 wowlan->patterns[i].pattern) || 8732 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8733 wowlan->patterns[i].pkt_offset)) 8734 return -ENOBUFS; 8735 nla_nest_end(msg, nl_pat); 8736 } 8737 nla_nest_end(msg, nl_pats); 8738 8739 return 0; 8740 } 8741 8742 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 8743 struct cfg80211_wowlan_tcp *tcp) 8744 { 8745 struct nlattr *nl_tcp; 8746 8747 if (!tcp) 8748 return 0; 8749 8750 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8751 if (!nl_tcp) 8752 return -ENOBUFS; 8753 8754 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8755 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8756 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8757 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8758 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8759 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8760 tcp->payload_len, tcp->payload) || 8761 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8762 tcp->data_interval) || 8763 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8764 tcp->wake_len, tcp->wake_data) || 8765 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8766 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8767 return -ENOBUFS; 8768 8769 if (tcp->payload_seq.len && 8770 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8771 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8772 return -ENOBUFS; 8773 8774 if (tcp->payload_tok.len && 8775 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8776 sizeof(tcp->payload_tok) + tcp->tokens_size, 8777 &tcp->payload_tok)) 8778 return -ENOBUFS; 8779 8780 nla_nest_end(msg, nl_tcp); 8781 8782 return 0; 8783 } 8784 8785 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 8786 struct cfg80211_sched_scan_request *req) 8787 { 8788 struct nlattr *nd, *freqs, *matches, *match; 8789 int i; 8790 8791 if (!req) 8792 return 0; 8793 8794 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 8795 if (!nd) 8796 return -ENOBUFS; 8797 8798 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, req->interval)) 8799 return -ENOBUFS; 8800 8801 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 8802 if (!freqs) 8803 return -ENOBUFS; 8804 8805 for (i = 0; i < req->n_channels; i++) 8806 nla_put_u32(msg, i, req->channels[i]->center_freq); 8807 8808 nla_nest_end(msg, freqs); 8809 8810 if (req->n_match_sets) { 8811 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 8812 for (i = 0; i < req->n_match_sets; i++) { 8813 match = nla_nest_start(msg, i); 8814 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 8815 req->match_sets[i].ssid.ssid_len, 8816 req->match_sets[i].ssid.ssid); 8817 nla_nest_end(msg, match); 8818 } 8819 nla_nest_end(msg, matches); 8820 } 8821 8822 nla_nest_end(msg, nd); 8823 8824 return 0; 8825 } 8826 8827 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8828 { 8829 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8830 struct sk_buff *msg; 8831 void *hdr; 8832 u32 size = NLMSG_DEFAULT_SIZE; 8833 8834 if (!rdev->wiphy.wowlan) 8835 return -EOPNOTSUPP; 8836 8837 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8838 /* adjust size to have room for all the data */ 8839 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8840 rdev->wiphy.wowlan_config->tcp->payload_len + 8841 rdev->wiphy.wowlan_config->tcp->wake_len + 8842 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8843 } 8844 8845 msg = nlmsg_new(size, GFP_KERNEL); 8846 if (!msg) 8847 return -ENOMEM; 8848 8849 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8850 NL80211_CMD_GET_WOWLAN); 8851 if (!hdr) 8852 goto nla_put_failure; 8853 8854 if (rdev->wiphy.wowlan_config) { 8855 struct nlattr *nl_wowlan; 8856 8857 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8858 if (!nl_wowlan) 8859 goto nla_put_failure; 8860 8861 if ((rdev->wiphy.wowlan_config->any && 8862 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8863 (rdev->wiphy.wowlan_config->disconnect && 8864 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8865 (rdev->wiphy.wowlan_config->magic_pkt && 8866 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8867 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8868 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8869 (rdev->wiphy.wowlan_config->eap_identity_req && 8870 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8871 (rdev->wiphy.wowlan_config->four_way_handshake && 8872 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8873 (rdev->wiphy.wowlan_config->rfkill_release && 8874 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8875 goto nla_put_failure; 8876 8877 if (nl80211_send_wowlan_patterns(msg, rdev)) 8878 goto nla_put_failure; 8879 8880 if (nl80211_send_wowlan_tcp(msg, 8881 rdev->wiphy.wowlan_config->tcp)) 8882 goto nla_put_failure; 8883 8884 if (nl80211_send_wowlan_nd( 8885 msg, 8886 rdev->wiphy.wowlan_config->nd_config)) 8887 goto nla_put_failure; 8888 8889 nla_nest_end(msg, nl_wowlan); 8890 } 8891 8892 genlmsg_end(msg, hdr); 8893 return genlmsg_reply(msg, info); 8894 8895 nla_put_failure: 8896 nlmsg_free(msg); 8897 return -ENOBUFS; 8898 } 8899 8900 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8901 struct nlattr *attr, 8902 struct cfg80211_wowlan *trig) 8903 { 8904 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8905 struct cfg80211_wowlan_tcp *cfg; 8906 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8907 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8908 u32 size; 8909 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8910 int err, port; 8911 8912 if (!rdev->wiphy.wowlan->tcp) 8913 return -EINVAL; 8914 8915 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8916 nla_data(attr), nla_len(attr), 8917 nl80211_wowlan_tcp_policy); 8918 if (err) 8919 return err; 8920 8921 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8922 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8923 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8924 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8925 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8926 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8927 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8928 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8929 return -EINVAL; 8930 8931 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8932 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8933 return -EINVAL; 8934 8935 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8936 rdev->wiphy.wowlan->tcp->data_interval_max || 8937 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8938 return -EINVAL; 8939 8940 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8941 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8942 return -EINVAL; 8943 8944 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8945 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8946 return -EINVAL; 8947 8948 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8949 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8950 8951 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8952 tokens_size = tokln - sizeof(*tok); 8953 8954 if (!tok->len || tokens_size % tok->len) 8955 return -EINVAL; 8956 if (!rdev->wiphy.wowlan->tcp->tok) 8957 return -EINVAL; 8958 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 8959 return -EINVAL; 8960 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 8961 return -EINVAL; 8962 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 8963 return -EINVAL; 8964 if (tok->offset + tok->len > data_size) 8965 return -EINVAL; 8966 } 8967 8968 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 8969 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 8970 if (!rdev->wiphy.wowlan->tcp->seq) 8971 return -EINVAL; 8972 if (seq->len == 0 || seq->len > 4) 8973 return -EINVAL; 8974 if (seq->len + seq->offset > data_size) 8975 return -EINVAL; 8976 } 8977 8978 size = sizeof(*cfg); 8979 size += data_size; 8980 size += wake_size + wake_mask_size; 8981 size += tokens_size; 8982 8983 cfg = kzalloc(size, GFP_KERNEL); 8984 if (!cfg) 8985 return -ENOMEM; 8986 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 8987 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 8988 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 8989 ETH_ALEN); 8990 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 8991 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 8992 else 8993 port = 0; 8994 #ifdef CONFIG_INET 8995 /* allocate a socket and port for it and use it */ 8996 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 8997 IPPROTO_TCP, &cfg->sock, 1); 8998 if (err) { 8999 kfree(cfg); 9000 return err; 9001 } 9002 if (inet_csk_get_port(cfg->sock->sk, port)) { 9003 sock_release(cfg->sock); 9004 kfree(cfg); 9005 return -EADDRINUSE; 9006 } 9007 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9008 #else 9009 if (!port) { 9010 kfree(cfg); 9011 return -EINVAL; 9012 } 9013 cfg->src_port = port; 9014 #endif 9015 9016 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9017 cfg->payload_len = data_size; 9018 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9019 memcpy((void *)cfg->payload, 9020 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9021 data_size); 9022 if (seq) 9023 cfg->payload_seq = *seq; 9024 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9025 cfg->wake_len = wake_size; 9026 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9027 memcpy((void *)cfg->wake_data, 9028 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9029 wake_size); 9030 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9031 data_size + wake_size; 9032 memcpy((void *)cfg->wake_mask, 9033 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9034 wake_mask_size); 9035 if (tok) { 9036 cfg->tokens_size = tokens_size; 9037 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9038 } 9039 9040 trig->tcp = cfg; 9041 9042 return 0; 9043 } 9044 9045 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9046 const struct wiphy_wowlan_support *wowlan, 9047 struct nlattr *attr, 9048 struct cfg80211_wowlan *trig) 9049 { 9050 struct nlattr **tb; 9051 int err; 9052 9053 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9054 if (!tb) 9055 return -ENOMEM; 9056 9057 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9058 err = -EOPNOTSUPP; 9059 goto out; 9060 } 9061 9062 err = nla_parse(tb, NL80211_ATTR_MAX, 9063 nla_data(attr), nla_len(attr), 9064 nl80211_policy); 9065 if (err) 9066 goto out; 9067 9068 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9069 err = PTR_ERR_OR_ZERO(trig->nd_config); 9070 if (err) 9071 trig->nd_config = NULL; 9072 9073 out: 9074 kfree(tb); 9075 return err; 9076 } 9077 9078 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9079 { 9080 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9081 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9082 struct cfg80211_wowlan new_triggers = {}; 9083 struct cfg80211_wowlan *ntrig; 9084 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9085 int err, i; 9086 bool prev_enabled = rdev->wiphy.wowlan_config; 9087 9088 if (!wowlan) 9089 return -EOPNOTSUPP; 9090 9091 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9092 cfg80211_rdev_free_wowlan(rdev); 9093 rdev->wiphy.wowlan_config = NULL; 9094 goto set_wakeup; 9095 } 9096 9097 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9098 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9099 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9100 nl80211_wowlan_policy); 9101 if (err) 9102 return err; 9103 9104 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9105 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9106 return -EINVAL; 9107 new_triggers.any = true; 9108 } 9109 9110 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9111 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9112 return -EINVAL; 9113 new_triggers.disconnect = true; 9114 } 9115 9116 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9117 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9118 return -EINVAL; 9119 new_triggers.magic_pkt = true; 9120 } 9121 9122 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9123 return -EINVAL; 9124 9125 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9126 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9127 return -EINVAL; 9128 new_triggers.gtk_rekey_failure = true; 9129 } 9130 9131 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9132 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9133 return -EINVAL; 9134 new_triggers.eap_identity_req = true; 9135 } 9136 9137 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9138 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9139 return -EINVAL; 9140 new_triggers.four_way_handshake = true; 9141 } 9142 9143 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9144 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9145 return -EINVAL; 9146 new_triggers.rfkill_release = true; 9147 } 9148 9149 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9150 struct nlattr *pat; 9151 int n_patterns = 0; 9152 int rem, pat_len, mask_len, pkt_offset; 9153 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9154 9155 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9156 rem) 9157 n_patterns++; 9158 if (n_patterns > wowlan->n_patterns) 9159 return -EINVAL; 9160 9161 new_triggers.patterns = kcalloc(n_patterns, 9162 sizeof(new_triggers.patterns[0]), 9163 GFP_KERNEL); 9164 if (!new_triggers.patterns) 9165 return -ENOMEM; 9166 9167 new_triggers.n_patterns = n_patterns; 9168 i = 0; 9169 9170 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9171 rem) { 9172 u8 *mask_pat; 9173 9174 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9175 nla_len(pat), NULL); 9176 err = -EINVAL; 9177 if (!pat_tb[NL80211_PKTPAT_MASK] || 9178 !pat_tb[NL80211_PKTPAT_PATTERN]) 9179 goto error; 9180 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9181 mask_len = DIV_ROUND_UP(pat_len, 8); 9182 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9183 goto error; 9184 if (pat_len > wowlan->pattern_max_len || 9185 pat_len < wowlan->pattern_min_len) 9186 goto error; 9187 9188 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9189 pkt_offset = 0; 9190 else 9191 pkt_offset = nla_get_u32( 9192 pat_tb[NL80211_PKTPAT_OFFSET]); 9193 if (pkt_offset > wowlan->max_pkt_offset) 9194 goto error; 9195 new_triggers.patterns[i].pkt_offset = pkt_offset; 9196 9197 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9198 if (!mask_pat) { 9199 err = -ENOMEM; 9200 goto error; 9201 } 9202 new_triggers.patterns[i].mask = mask_pat; 9203 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9204 mask_len); 9205 mask_pat += mask_len; 9206 new_triggers.patterns[i].pattern = mask_pat; 9207 new_triggers.patterns[i].pattern_len = pat_len; 9208 memcpy(mask_pat, 9209 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9210 pat_len); 9211 i++; 9212 } 9213 } 9214 9215 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9216 err = nl80211_parse_wowlan_tcp( 9217 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9218 &new_triggers); 9219 if (err) 9220 goto error; 9221 } 9222 9223 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9224 err = nl80211_parse_wowlan_nd( 9225 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9226 &new_triggers); 9227 if (err) 9228 goto error; 9229 } 9230 9231 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9232 if (!ntrig) { 9233 err = -ENOMEM; 9234 goto error; 9235 } 9236 cfg80211_rdev_free_wowlan(rdev); 9237 rdev->wiphy.wowlan_config = ntrig; 9238 9239 set_wakeup: 9240 if (rdev->ops->set_wakeup && 9241 prev_enabled != !!rdev->wiphy.wowlan_config) 9242 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9243 9244 return 0; 9245 error: 9246 for (i = 0; i < new_triggers.n_patterns; i++) 9247 kfree(new_triggers.patterns[i].mask); 9248 kfree(new_triggers.patterns); 9249 if (new_triggers.tcp && new_triggers.tcp->sock) 9250 sock_release(new_triggers.tcp->sock); 9251 kfree(new_triggers.tcp); 9252 return err; 9253 } 9254 #endif 9255 9256 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9257 struct cfg80211_registered_device *rdev) 9258 { 9259 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9260 int i, j, pat_len; 9261 struct cfg80211_coalesce_rules *rule; 9262 9263 if (!rdev->coalesce->n_rules) 9264 return 0; 9265 9266 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9267 if (!nl_rules) 9268 return -ENOBUFS; 9269 9270 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9271 nl_rule = nla_nest_start(msg, i + 1); 9272 if (!nl_rule) 9273 return -ENOBUFS; 9274 9275 rule = &rdev->coalesce->rules[i]; 9276 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9277 rule->delay)) 9278 return -ENOBUFS; 9279 9280 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9281 rule->condition)) 9282 return -ENOBUFS; 9283 9284 nl_pats = nla_nest_start(msg, 9285 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9286 if (!nl_pats) 9287 return -ENOBUFS; 9288 9289 for (j = 0; j < rule->n_patterns; j++) { 9290 nl_pat = nla_nest_start(msg, j + 1); 9291 if (!nl_pat) 9292 return -ENOBUFS; 9293 pat_len = rule->patterns[j].pattern_len; 9294 if (nla_put(msg, NL80211_PKTPAT_MASK, 9295 DIV_ROUND_UP(pat_len, 8), 9296 rule->patterns[j].mask) || 9297 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9298 rule->patterns[j].pattern) || 9299 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9300 rule->patterns[j].pkt_offset)) 9301 return -ENOBUFS; 9302 nla_nest_end(msg, nl_pat); 9303 } 9304 nla_nest_end(msg, nl_pats); 9305 nla_nest_end(msg, nl_rule); 9306 } 9307 nla_nest_end(msg, nl_rules); 9308 9309 return 0; 9310 } 9311 9312 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9313 { 9314 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9315 struct sk_buff *msg; 9316 void *hdr; 9317 9318 if (!rdev->wiphy.coalesce) 9319 return -EOPNOTSUPP; 9320 9321 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9322 if (!msg) 9323 return -ENOMEM; 9324 9325 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9326 NL80211_CMD_GET_COALESCE); 9327 if (!hdr) 9328 goto nla_put_failure; 9329 9330 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9331 goto nla_put_failure; 9332 9333 genlmsg_end(msg, hdr); 9334 return genlmsg_reply(msg, info); 9335 9336 nla_put_failure: 9337 nlmsg_free(msg); 9338 return -ENOBUFS; 9339 } 9340 9341 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9342 { 9343 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9344 int i, j; 9345 struct cfg80211_coalesce_rules *rule; 9346 9347 if (!coalesce) 9348 return; 9349 9350 for (i = 0; i < coalesce->n_rules; i++) { 9351 rule = &coalesce->rules[i]; 9352 for (j = 0; j < rule->n_patterns; j++) 9353 kfree(rule->patterns[j].mask); 9354 kfree(rule->patterns); 9355 } 9356 kfree(coalesce->rules); 9357 kfree(coalesce); 9358 rdev->coalesce = NULL; 9359 } 9360 9361 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9362 struct nlattr *rule, 9363 struct cfg80211_coalesce_rules *new_rule) 9364 { 9365 int err, i; 9366 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9367 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9368 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9369 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9370 9371 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9372 nla_len(rule), nl80211_coalesce_policy); 9373 if (err) 9374 return err; 9375 9376 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9377 new_rule->delay = 9378 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9379 if (new_rule->delay > coalesce->max_delay) 9380 return -EINVAL; 9381 9382 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9383 new_rule->condition = 9384 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9385 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9386 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9387 return -EINVAL; 9388 9389 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9390 return -EINVAL; 9391 9392 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9393 rem) 9394 n_patterns++; 9395 if (n_patterns > coalesce->n_patterns) 9396 return -EINVAL; 9397 9398 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9399 GFP_KERNEL); 9400 if (!new_rule->patterns) 9401 return -ENOMEM; 9402 9403 new_rule->n_patterns = n_patterns; 9404 i = 0; 9405 9406 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9407 rem) { 9408 u8 *mask_pat; 9409 9410 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9411 nla_len(pat), NULL); 9412 if (!pat_tb[NL80211_PKTPAT_MASK] || 9413 !pat_tb[NL80211_PKTPAT_PATTERN]) 9414 return -EINVAL; 9415 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9416 mask_len = DIV_ROUND_UP(pat_len, 8); 9417 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9418 return -EINVAL; 9419 if (pat_len > coalesce->pattern_max_len || 9420 pat_len < coalesce->pattern_min_len) 9421 return -EINVAL; 9422 9423 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9424 pkt_offset = 0; 9425 else 9426 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9427 if (pkt_offset > coalesce->max_pkt_offset) 9428 return -EINVAL; 9429 new_rule->patterns[i].pkt_offset = pkt_offset; 9430 9431 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9432 if (!mask_pat) 9433 return -ENOMEM; 9434 9435 new_rule->patterns[i].mask = mask_pat; 9436 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9437 mask_len); 9438 9439 mask_pat += mask_len; 9440 new_rule->patterns[i].pattern = mask_pat; 9441 new_rule->patterns[i].pattern_len = pat_len; 9442 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9443 pat_len); 9444 i++; 9445 } 9446 9447 return 0; 9448 } 9449 9450 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9451 { 9452 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9453 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9454 struct cfg80211_coalesce new_coalesce = {}; 9455 struct cfg80211_coalesce *n_coalesce; 9456 int err, rem_rule, n_rules = 0, i, j; 9457 struct nlattr *rule; 9458 struct cfg80211_coalesce_rules *tmp_rule; 9459 9460 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9461 return -EOPNOTSUPP; 9462 9463 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9464 cfg80211_rdev_free_coalesce(rdev); 9465 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 9466 return 0; 9467 } 9468 9469 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9470 rem_rule) 9471 n_rules++; 9472 if (n_rules > coalesce->n_rules) 9473 return -EINVAL; 9474 9475 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9476 GFP_KERNEL); 9477 if (!new_coalesce.rules) 9478 return -ENOMEM; 9479 9480 new_coalesce.n_rules = n_rules; 9481 i = 0; 9482 9483 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9484 rem_rule) { 9485 err = nl80211_parse_coalesce_rule(rdev, rule, 9486 &new_coalesce.rules[i]); 9487 if (err) 9488 goto error; 9489 9490 i++; 9491 } 9492 9493 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 9494 if (err) 9495 goto error; 9496 9497 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9498 if (!n_coalesce) { 9499 err = -ENOMEM; 9500 goto error; 9501 } 9502 cfg80211_rdev_free_coalesce(rdev); 9503 rdev->coalesce = n_coalesce; 9504 9505 return 0; 9506 error: 9507 for (i = 0; i < new_coalesce.n_rules; i++) { 9508 tmp_rule = &new_coalesce.rules[i]; 9509 for (j = 0; j < tmp_rule->n_patterns; j++) 9510 kfree(tmp_rule->patterns[j].mask); 9511 kfree(tmp_rule->patterns); 9512 } 9513 kfree(new_coalesce.rules); 9514 9515 return err; 9516 } 9517 9518 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9519 { 9520 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9521 struct net_device *dev = info->user_ptr[1]; 9522 struct wireless_dev *wdev = dev->ieee80211_ptr; 9523 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9524 struct cfg80211_gtk_rekey_data rekey_data; 9525 int err; 9526 9527 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9528 return -EINVAL; 9529 9530 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9531 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9532 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9533 nl80211_rekey_policy); 9534 if (err) 9535 return err; 9536 9537 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9538 return -ERANGE; 9539 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9540 return -ERANGE; 9541 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9542 return -ERANGE; 9543 9544 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9545 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9546 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9547 9548 wdev_lock(wdev); 9549 if (!wdev->current_bss) { 9550 err = -ENOTCONN; 9551 goto out; 9552 } 9553 9554 if (!rdev->ops->set_rekey_data) { 9555 err = -EOPNOTSUPP; 9556 goto out; 9557 } 9558 9559 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9560 out: 9561 wdev_unlock(wdev); 9562 return err; 9563 } 9564 9565 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9566 struct genl_info *info) 9567 { 9568 struct net_device *dev = info->user_ptr[1]; 9569 struct wireless_dev *wdev = dev->ieee80211_ptr; 9570 9571 if (wdev->iftype != NL80211_IFTYPE_AP && 9572 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9573 return -EINVAL; 9574 9575 if (wdev->ap_unexpected_nlportid) 9576 return -EBUSY; 9577 9578 wdev->ap_unexpected_nlportid = info->snd_portid; 9579 return 0; 9580 } 9581 9582 static int nl80211_probe_client(struct sk_buff *skb, 9583 struct genl_info *info) 9584 { 9585 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9586 struct net_device *dev = info->user_ptr[1]; 9587 struct wireless_dev *wdev = dev->ieee80211_ptr; 9588 struct sk_buff *msg; 9589 void *hdr; 9590 const u8 *addr; 9591 u64 cookie; 9592 int err; 9593 9594 if (wdev->iftype != NL80211_IFTYPE_AP && 9595 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9596 return -EOPNOTSUPP; 9597 9598 if (!info->attrs[NL80211_ATTR_MAC]) 9599 return -EINVAL; 9600 9601 if (!rdev->ops->probe_client) 9602 return -EOPNOTSUPP; 9603 9604 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9605 if (!msg) 9606 return -ENOMEM; 9607 9608 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9609 NL80211_CMD_PROBE_CLIENT); 9610 if (!hdr) { 9611 err = -ENOBUFS; 9612 goto free_msg; 9613 } 9614 9615 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9616 9617 err = rdev_probe_client(rdev, dev, addr, &cookie); 9618 if (err) 9619 goto free_msg; 9620 9621 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9622 goto nla_put_failure; 9623 9624 genlmsg_end(msg, hdr); 9625 9626 return genlmsg_reply(msg, info); 9627 9628 nla_put_failure: 9629 err = -ENOBUFS; 9630 free_msg: 9631 nlmsg_free(msg); 9632 return err; 9633 } 9634 9635 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9636 { 9637 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9638 struct cfg80211_beacon_registration *reg, *nreg; 9639 int rv; 9640 9641 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9642 return -EOPNOTSUPP; 9643 9644 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9645 if (!nreg) 9646 return -ENOMEM; 9647 9648 /* First, check if already registered. */ 9649 spin_lock_bh(&rdev->beacon_registrations_lock); 9650 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9651 if (reg->nlportid == info->snd_portid) { 9652 rv = -EALREADY; 9653 goto out_err; 9654 } 9655 } 9656 /* Add it to the list */ 9657 nreg->nlportid = info->snd_portid; 9658 list_add(&nreg->list, &rdev->beacon_registrations); 9659 9660 spin_unlock_bh(&rdev->beacon_registrations_lock); 9661 9662 return 0; 9663 out_err: 9664 spin_unlock_bh(&rdev->beacon_registrations_lock); 9665 kfree(nreg); 9666 return rv; 9667 } 9668 9669 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9670 { 9671 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9672 struct wireless_dev *wdev = info->user_ptr[1]; 9673 int err; 9674 9675 if (!rdev->ops->start_p2p_device) 9676 return -EOPNOTSUPP; 9677 9678 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9679 return -EOPNOTSUPP; 9680 9681 if (wdev->p2p_started) 9682 return 0; 9683 9684 if (rfkill_blocked(rdev->rfkill)) 9685 return -ERFKILL; 9686 9687 err = rdev_start_p2p_device(rdev, wdev); 9688 if (err) 9689 return err; 9690 9691 wdev->p2p_started = true; 9692 rdev->opencount++; 9693 9694 return 0; 9695 } 9696 9697 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 9698 { 9699 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9700 struct wireless_dev *wdev = info->user_ptr[1]; 9701 9702 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9703 return -EOPNOTSUPP; 9704 9705 if (!rdev->ops->stop_p2p_device) 9706 return -EOPNOTSUPP; 9707 9708 cfg80211_stop_p2p_device(rdev, wdev); 9709 9710 return 0; 9711 } 9712 9713 static int nl80211_get_protocol_features(struct sk_buff *skb, 9714 struct genl_info *info) 9715 { 9716 void *hdr; 9717 struct sk_buff *msg; 9718 9719 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9720 if (!msg) 9721 return -ENOMEM; 9722 9723 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9724 NL80211_CMD_GET_PROTOCOL_FEATURES); 9725 if (!hdr) 9726 goto nla_put_failure; 9727 9728 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 9729 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 9730 goto nla_put_failure; 9731 9732 genlmsg_end(msg, hdr); 9733 return genlmsg_reply(msg, info); 9734 9735 nla_put_failure: 9736 kfree_skb(msg); 9737 return -ENOBUFS; 9738 } 9739 9740 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 9741 { 9742 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9743 struct cfg80211_update_ft_ies_params ft_params; 9744 struct net_device *dev = info->user_ptr[1]; 9745 9746 if (!rdev->ops->update_ft_ies) 9747 return -EOPNOTSUPP; 9748 9749 if (!info->attrs[NL80211_ATTR_MDID] || 9750 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9751 return -EINVAL; 9752 9753 memset(&ft_params, 0, sizeof(ft_params)); 9754 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 9755 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9756 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9757 9758 return rdev_update_ft_ies(rdev, dev, &ft_params); 9759 } 9760 9761 static int nl80211_crit_protocol_start(struct sk_buff *skb, 9762 struct genl_info *info) 9763 { 9764 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9765 struct wireless_dev *wdev = info->user_ptr[1]; 9766 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 9767 u16 duration; 9768 int ret; 9769 9770 if (!rdev->ops->crit_proto_start) 9771 return -EOPNOTSUPP; 9772 9773 if (WARN_ON(!rdev->ops->crit_proto_stop)) 9774 return -EINVAL; 9775 9776 if (rdev->crit_proto_nlportid) 9777 return -EBUSY; 9778 9779 /* determine protocol if provided */ 9780 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 9781 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 9782 9783 if (proto >= NUM_NL80211_CRIT_PROTO) 9784 return -EINVAL; 9785 9786 /* timeout must be provided */ 9787 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 9788 return -EINVAL; 9789 9790 duration = 9791 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 9792 9793 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 9794 return -ERANGE; 9795 9796 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 9797 if (!ret) 9798 rdev->crit_proto_nlportid = info->snd_portid; 9799 9800 return ret; 9801 } 9802 9803 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 9804 struct genl_info *info) 9805 { 9806 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9807 struct wireless_dev *wdev = info->user_ptr[1]; 9808 9809 if (!rdev->ops->crit_proto_stop) 9810 return -EOPNOTSUPP; 9811 9812 if (rdev->crit_proto_nlportid) { 9813 rdev->crit_proto_nlportid = 0; 9814 rdev_crit_proto_stop(rdev, wdev); 9815 } 9816 return 0; 9817 } 9818 9819 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 9820 { 9821 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9822 struct wireless_dev *wdev = 9823 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9824 int i, err; 9825 u32 vid, subcmd; 9826 9827 if (!rdev->wiphy.vendor_commands) 9828 return -EOPNOTSUPP; 9829 9830 if (IS_ERR(wdev)) { 9831 err = PTR_ERR(wdev); 9832 if (err != -EINVAL) 9833 return err; 9834 wdev = NULL; 9835 } else if (wdev->wiphy != &rdev->wiphy) { 9836 return -EINVAL; 9837 } 9838 9839 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9840 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9841 return -EINVAL; 9842 9843 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9844 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9845 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9846 const struct wiphy_vendor_command *vcmd; 9847 void *data = NULL; 9848 int len = 0; 9849 9850 vcmd = &rdev->wiphy.vendor_commands[i]; 9851 9852 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9853 continue; 9854 9855 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9856 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9857 if (!wdev) 9858 return -EINVAL; 9859 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9860 !wdev->netdev) 9861 return -EINVAL; 9862 9863 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9864 if (wdev->netdev && 9865 !netif_running(wdev->netdev)) 9866 return -ENETDOWN; 9867 if (!wdev->netdev && !wdev->p2p_started) 9868 return -ENETDOWN; 9869 } 9870 } else { 9871 wdev = NULL; 9872 } 9873 9874 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9875 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9876 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9877 } 9878 9879 rdev->cur_cmd_info = info; 9880 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9881 data, len); 9882 rdev->cur_cmd_info = NULL; 9883 return err; 9884 } 9885 9886 return -EOPNOTSUPP; 9887 } 9888 9889 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9890 enum nl80211_commands cmd, 9891 enum nl80211_attrs attr, 9892 int approxlen) 9893 { 9894 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9895 9896 if (WARN_ON(!rdev->cur_cmd_info)) 9897 return NULL; 9898 9899 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 9900 rdev->cur_cmd_info->snd_portid, 9901 rdev->cur_cmd_info->snd_seq, 9902 cmd, attr, NULL, GFP_KERNEL); 9903 } 9904 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9905 9906 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9907 { 9908 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9909 void *hdr = ((void **)skb->cb)[1]; 9910 struct nlattr *data = ((void **)skb->cb)[2]; 9911 9912 /* clear CB data for netlink core to own from now on */ 9913 memset(skb->cb, 0, sizeof(skb->cb)); 9914 9915 if (WARN_ON(!rdev->cur_cmd_info)) { 9916 kfree_skb(skb); 9917 return -EINVAL; 9918 } 9919 9920 nla_nest_end(skb, data); 9921 genlmsg_end(skb, hdr); 9922 return genlmsg_reply(skb, rdev->cur_cmd_info); 9923 } 9924 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9925 9926 9927 static int nl80211_set_qos_map(struct sk_buff *skb, 9928 struct genl_info *info) 9929 { 9930 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9931 struct cfg80211_qos_map *qos_map = NULL; 9932 struct net_device *dev = info->user_ptr[1]; 9933 u8 *pos, len, num_des, des_len, des; 9934 int ret; 9935 9936 if (!rdev->ops->set_qos_map) 9937 return -EOPNOTSUPP; 9938 9939 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 9940 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 9941 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 9942 9943 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 9944 len > IEEE80211_QOS_MAP_LEN_MAX) 9945 return -EINVAL; 9946 9947 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 9948 if (!qos_map) 9949 return -ENOMEM; 9950 9951 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 9952 if (num_des) { 9953 des_len = num_des * 9954 sizeof(struct cfg80211_dscp_exception); 9955 memcpy(qos_map->dscp_exception, pos, des_len); 9956 qos_map->num_des = num_des; 9957 for (des = 0; des < num_des; des++) { 9958 if (qos_map->dscp_exception[des].up > 7) { 9959 kfree(qos_map); 9960 return -EINVAL; 9961 } 9962 } 9963 pos += des_len; 9964 } 9965 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 9966 } 9967 9968 wdev_lock(dev->ieee80211_ptr); 9969 ret = nl80211_key_allowed(dev->ieee80211_ptr); 9970 if (!ret) 9971 ret = rdev_set_qos_map(rdev, dev, qos_map); 9972 wdev_unlock(dev->ieee80211_ptr); 9973 9974 kfree(qos_map); 9975 return ret; 9976 } 9977 9978 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 9979 { 9980 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9981 struct net_device *dev = info->user_ptr[1]; 9982 struct wireless_dev *wdev = dev->ieee80211_ptr; 9983 const u8 *peer; 9984 u8 tsid, up; 9985 u16 admitted_time = 0; 9986 int err; 9987 9988 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 9989 return -EOPNOTSUPP; 9990 9991 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 9992 !info->attrs[NL80211_ATTR_USER_PRIO]) 9993 return -EINVAL; 9994 9995 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 9996 if (tsid >= IEEE80211_NUM_TIDS) 9997 return -EINVAL; 9998 9999 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10000 if (up >= IEEE80211_NUM_UPS) 10001 return -EINVAL; 10002 10003 /* WMM uses TIDs 0-7 even for TSPEC */ 10004 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10005 /* TODO: handle 802.11 TSPEC/admission control 10006 * need more attributes for that (e.g. BA session requirement); 10007 * change the WMM adminssion test above to allow both then 10008 */ 10009 return -EINVAL; 10010 } 10011 10012 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10013 10014 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10015 admitted_time = 10016 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10017 if (!admitted_time) 10018 return -EINVAL; 10019 } 10020 10021 wdev_lock(wdev); 10022 switch (wdev->iftype) { 10023 case NL80211_IFTYPE_STATION: 10024 case NL80211_IFTYPE_P2P_CLIENT: 10025 if (wdev->current_bss) 10026 break; 10027 err = -ENOTCONN; 10028 goto out; 10029 default: 10030 err = -EOPNOTSUPP; 10031 goto out; 10032 } 10033 10034 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10035 10036 out: 10037 wdev_unlock(wdev); 10038 return err; 10039 } 10040 10041 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10042 { 10043 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10044 struct net_device *dev = info->user_ptr[1]; 10045 struct wireless_dev *wdev = dev->ieee80211_ptr; 10046 const u8 *peer; 10047 u8 tsid; 10048 int err; 10049 10050 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10051 return -EINVAL; 10052 10053 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10054 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10055 10056 wdev_lock(wdev); 10057 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10058 wdev_unlock(wdev); 10059 10060 return err; 10061 } 10062 10063 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10064 struct genl_info *info) 10065 { 10066 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10067 struct net_device *dev = info->user_ptr[1]; 10068 struct wireless_dev *wdev = dev->ieee80211_ptr; 10069 struct cfg80211_chan_def chandef = {}; 10070 const u8 *addr; 10071 u8 oper_class; 10072 int err; 10073 10074 if (!rdev->ops->tdls_channel_switch || 10075 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10076 return -EOPNOTSUPP; 10077 10078 switch (dev->ieee80211_ptr->iftype) { 10079 case NL80211_IFTYPE_STATION: 10080 case NL80211_IFTYPE_P2P_CLIENT: 10081 break; 10082 default: 10083 return -EOPNOTSUPP; 10084 } 10085 10086 if (!info->attrs[NL80211_ATTR_MAC] || 10087 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10088 return -EINVAL; 10089 10090 err = nl80211_parse_chandef(rdev, info, &chandef); 10091 if (err) 10092 return err; 10093 10094 /* 10095 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10096 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10097 * specification is not defined for them. 10098 */ 10099 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 10100 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10101 chandef.width != NL80211_CHAN_WIDTH_20) 10102 return -EINVAL; 10103 10104 /* we will be active on the TDLS link */ 10105 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype)) 10106 return -EINVAL; 10107 10108 /* don't allow switching to DFS channels */ 10109 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10110 return -EINVAL; 10111 10112 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10113 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10114 10115 wdev_lock(wdev); 10116 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10117 wdev_unlock(wdev); 10118 10119 return err; 10120 } 10121 10122 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10123 struct genl_info *info) 10124 { 10125 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10126 struct net_device *dev = info->user_ptr[1]; 10127 struct wireless_dev *wdev = dev->ieee80211_ptr; 10128 const u8 *addr; 10129 10130 if (!rdev->ops->tdls_channel_switch || 10131 !rdev->ops->tdls_cancel_channel_switch || 10132 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10133 return -EOPNOTSUPP; 10134 10135 switch (dev->ieee80211_ptr->iftype) { 10136 case NL80211_IFTYPE_STATION: 10137 case NL80211_IFTYPE_P2P_CLIENT: 10138 break; 10139 default: 10140 return -EOPNOTSUPP; 10141 } 10142 10143 if (!info->attrs[NL80211_ATTR_MAC]) 10144 return -EINVAL; 10145 10146 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10147 10148 wdev_lock(wdev); 10149 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10150 wdev_unlock(wdev); 10151 10152 return 0; 10153 } 10154 10155 #define NL80211_FLAG_NEED_WIPHY 0x01 10156 #define NL80211_FLAG_NEED_NETDEV 0x02 10157 #define NL80211_FLAG_NEED_RTNL 0x04 10158 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10159 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10160 NL80211_FLAG_CHECK_NETDEV_UP) 10161 #define NL80211_FLAG_NEED_WDEV 0x10 10162 /* If a netdev is associated, it must be UP, P2P must be started */ 10163 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10164 NL80211_FLAG_CHECK_NETDEV_UP) 10165 #define NL80211_FLAG_CLEAR_SKB 0x20 10166 10167 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10168 struct genl_info *info) 10169 { 10170 struct cfg80211_registered_device *rdev; 10171 struct wireless_dev *wdev; 10172 struct net_device *dev; 10173 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10174 10175 if (rtnl) 10176 rtnl_lock(); 10177 10178 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10179 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10180 if (IS_ERR(rdev)) { 10181 if (rtnl) 10182 rtnl_unlock(); 10183 return PTR_ERR(rdev); 10184 } 10185 info->user_ptr[0] = rdev; 10186 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 10187 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10188 ASSERT_RTNL(); 10189 10190 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 10191 info->attrs); 10192 if (IS_ERR(wdev)) { 10193 if (rtnl) 10194 rtnl_unlock(); 10195 return PTR_ERR(wdev); 10196 } 10197 10198 dev = wdev->netdev; 10199 rdev = wiphy_to_rdev(wdev->wiphy); 10200 10201 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 10202 if (!dev) { 10203 if (rtnl) 10204 rtnl_unlock(); 10205 return -EINVAL; 10206 } 10207 10208 info->user_ptr[1] = dev; 10209 } else { 10210 info->user_ptr[1] = wdev; 10211 } 10212 10213 if (dev) { 10214 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 10215 !netif_running(dev)) { 10216 if (rtnl) 10217 rtnl_unlock(); 10218 return -ENETDOWN; 10219 } 10220 10221 dev_hold(dev); 10222 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 10223 if (!wdev->p2p_started) { 10224 if (rtnl) 10225 rtnl_unlock(); 10226 return -ENETDOWN; 10227 } 10228 } 10229 10230 info->user_ptr[0] = rdev; 10231 } 10232 10233 return 0; 10234 } 10235 10236 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10237 struct genl_info *info) 10238 { 10239 if (info->user_ptr[1]) { 10240 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10241 struct wireless_dev *wdev = info->user_ptr[1]; 10242 10243 if (wdev->netdev) 10244 dev_put(wdev->netdev); 10245 } else { 10246 dev_put(info->user_ptr[1]); 10247 } 10248 } 10249 10250 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10251 rtnl_unlock(); 10252 10253 /* If needed, clear the netlink message payload from the SKB 10254 * as it might contain key data that shouldn't stick around on 10255 * the heap after the SKB is freed. The netlink message header 10256 * is still needed for further processing, so leave it intact. 10257 */ 10258 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10259 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10260 10261 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10262 } 10263 } 10264 10265 static const struct genl_ops nl80211_ops[] = { 10266 { 10267 .cmd = NL80211_CMD_GET_WIPHY, 10268 .doit = nl80211_get_wiphy, 10269 .dumpit = nl80211_dump_wiphy, 10270 .done = nl80211_dump_wiphy_done, 10271 .policy = nl80211_policy, 10272 /* can be retrieved by unprivileged users */ 10273 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10274 NL80211_FLAG_NEED_RTNL, 10275 }, 10276 { 10277 .cmd = NL80211_CMD_SET_WIPHY, 10278 .doit = nl80211_set_wiphy, 10279 .policy = nl80211_policy, 10280 .flags = GENL_ADMIN_PERM, 10281 .internal_flags = NL80211_FLAG_NEED_RTNL, 10282 }, 10283 { 10284 .cmd = NL80211_CMD_GET_INTERFACE, 10285 .doit = nl80211_get_interface, 10286 .dumpit = nl80211_dump_interface, 10287 .policy = nl80211_policy, 10288 /* can be retrieved by unprivileged users */ 10289 .internal_flags = NL80211_FLAG_NEED_WDEV | 10290 NL80211_FLAG_NEED_RTNL, 10291 }, 10292 { 10293 .cmd = NL80211_CMD_SET_INTERFACE, 10294 .doit = nl80211_set_interface, 10295 .policy = nl80211_policy, 10296 .flags = GENL_ADMIN_PERM, 10297 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10298 NL80211_FLAG_NEED_RTNL, 10299 }, 10300 { 10301 .cmd = NL80211_CMD_NEW_INTERFACE, 10302 .doit = nl80211_new_interface, 10303 .policy = nl80211_policy, 10304 .flags = GENL_ADMIN_PERM, 10305 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10306 NL80211_FLAG_NEED_RTNL, 10307 }, 10308 { 10309 .cmd = NL80211_CMD_DEL_INTERFACE, 10310 .doit = nl80211_del_interface, 10311 .policy = nl80211_policy, 10312 .flags = GENL_ADMIN_PERM, 10313 .internal_flags = NL80211_FLAG_NEED_WDEV | 10314 NL80211_FLAG_NEED_RTNL, 10315 }, 10316 { 10317 .cmd = NL80211_CMD_GET_KEY, 10318 .doit = nl80211_get_key, 10319 .policy = nl80211_policy, 10320 .flags = GENL_ADMIN_PERM, 10321 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10322 NL80211_FLAG_NEED_RTNL, 10323 }, 10324 { 10325 .cmd = NL80211_CMD_SET_KEY, 10326 .doit = nl80211_set_key, 10327 .policy = nl80211_policy, 10328 .flags = GENL_ADMIN_PERM, 10329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10330 NL80211_FLAG_NEED_RTNL | 10331 NL80211_FLAG_CLEAR_SKB, 10332 }, 10333 { 10334 .cmd = NL80211_CMD_NEW_KEY, 10335 .doit = nl80211_new_key, 10336 .policy = nl80211_policy, 10337 .flags = GENL_ADMIN_PERM, 10338 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10339 NL80211_FLAG_NEED_RTNL | 10340 NL80211_FLAG_CLEAR_SKB, 10341 }, 10342 { 10343 .cmd = NL80211_CMD_DEL_KEY, 10344 .doit = nl80211_del_key, 10345 .policy = nl80211_policy, 10346 .flags = GENL_ADMIN_PERM, 10347 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10348 NL80211_FLAG_NEED_RTNL, 10349 }, 10350 { 10351 .cmd = NL80211_CMD_SET_BEACON, 10352 .policy = nl80211_policy, 10353 .flags = GENL_ADMIN_PERM, 10354 .doit = nl80211_set_beacon, 10355 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10356 NL80211_FLAG_NEED_RTNL, 10357 }, 10358 { 10359 .cmd = NL80211_CMD_START_AP, 10360 .policy = nl80211_policy, 10361 .flags = GENL_ADMIN_PERM, 10362 .doit = nl80211_start_ap, 10363 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10364 NL80211_FLAG_NEED_RTNL, 10365 }, 10366 { 10367 .cmd = NL80211_CMD_STOP_AP, 10368 .policy = nl80211_policy, 10369 .flags = GENL_ADMIN_PERM, 10370 .doit = nl80211_stop_ap, 10371 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10372 NL80211_FLAG_NEED_RTNL, 10373 }, 10374 { 10375 .cmd = NL80211_CMD_GET_STATION, 10376 .doit = nl80211_get_station, 10377 .dumpit = nl80211_dump_station, 10378 .policy = nl80211_policy, 10379 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10380 NL80211_FLAG_NEED_RTNL, 10381 }, 10382 { 10383 .cmd = NL80211_CMD_SET_STATION, 10384 .doit = nl80211_set_station, 10385 .policy = nl80211_policy, 10386 .flags = GENL_ADMIN_PERM, 10387 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10388 NL80211_FLAG_NEED_RTNL, 10389 }, 10390 { 10391 .cmd = NL80211_CMD_NEW_STATION, 10392 .doit = nl80211_new_station, 10393 .policy = nl80211_policy, 10394 .flags = GENL_ADMIN_PERM, 10395 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10396 NL80211_FLAG_NEED_RTNL, 10397 }, 10398 { 10399 .cmd = NL80211_CMD_DEL_STATION, 10400 .doit = nl80211_del_station, 10401 .policy = nl80211_policy, 10402 .flags = GENL_ADMIN_PERM, 10403 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10404 NL80211_FLAG_NEED_RTNL, 10405 }, 10406 { 10407 .cmd = NL80211_CMD_GET_MPATH, 10408 .doit = nl80211_get_mpath, 10409 .dumpit = nl80211_dump_mpath, 10410 .policy = nl80211_policy, 10411 .flags = GENL_ADMIN_PERM, 10412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10413 NL80211_FLAG_NEED_RTNL, 10414 }, 10415 { 10416 .cmd = NL80211_CMD_GET_MPP, 10417 .doit = nl80211_get_mpp, 10418 .dumpit = nl80211_dump_mpp, 10419 .policy = nl80211_policy, 10420 .flags = GENL_ADMIN_PERM, 10421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10422 NL80211_FLAG_NEED_RTNL, 10423 }, 10424 { 10425 .cmd = NL80211_CMD_SET_MPATH, 10426 .doit = nl80211_set_mpath, 10427 .policy = nl80211_policy, 10428 .flags = GENL_ADMIN_PERM, 10429 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10430 NL80211_FLAG_NEED_RTNL, 10431 }, 10432 { 10433 .cmd = NL80211_CMD_NEW_MPATH, 10434 .doit = nl80211_new_mpath, 10435 .policy = nl80211_policy, 10436 .flags = GENL_ADMIN_PERM, 10437 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10438 NL80211_FLAG_NEED_RTNL, 10439 }, 10440 { 10441 .cmd = NL80211_CMD_DEL_MPATH, 10442 .doit = nl80211_del_mpath, 10443 .policy = nl80211_policy, 10444 .flags = GENL_ADMIN_PERM, 10445 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10446 NL80211_FLAG_NEED_RTNL, 10447 }, 10448 { 10449 .cmd = NL80211_CMD_SET_BSS, 10450 .doit = nl80211_set_bss, 10451 .policy = nl80211_policy, 10452 .flags = GENL_ADMIN_PERM, 10453 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10454 NL80211_FLAG_NEED_RTNL, 10455 }, 10456 { 10457 .cmd = NL80211_CMD_GET_REG, 10458 .doit = nl80211_get_reg_do, 10459 .dumpit = nl80211_get_reg_dump, 10460 .policy = nl80211_policy, 10461 .internal_flags = NL80211_FLAG_NEED_RTNL, 10462 /* can be retrieved by unprivileged users */ 10463 }, 10464 { 10465 .cmd = NL80211_CMD_SET_REG, 10466 .doit = nl80211_set_reg, 10467 .policy = nl80211_policy, 10468 .flags = GENL_ADMIN_PERM, 10469 .internal_flags = NL80211_FLAG_NEED_RTNL, 10470 }, 10471 { 10472 .cmd = NL80211_CMD_REQ_SET_REG, 10473 .doit = nl80211_req_set_reg, 10474 .policy = nl80211_policy, 10475 .flags = GENL_ADMIN_PERM, 10476 }, 10477 { 10478 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10479 .doit = nl80211_get_mesh_config, 10480 .policy = nl80211_policy, 10481 /* can be retrieved by unprivileged users */ 10482 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10483 NL80211_FLAG_NEED_RTNL, 10484 }, 10485 { 10486 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10487 .doit = nl80211_update_mesh_config, 10488 .policy = nl80211_policy, 10489 .flags = GENL_ADMIN_PERM, 10490 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10491 NL80211_FLAG_NEED_RTNL, 10492 }, 10493 { 10494 .cmd = NL80211_CMD_TRIGGER_SCAN, 10495 .doit = nl80211_trigger_scan, 10496 .policy = nl80211_policy, 10497 .flags = GENL_ADMIN_PERM, 10498 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10499 NL80211_FLAG_NEED_RTNL, 10500 }, 10501 { 10502 .cmd = NL80211_CMD_GET_SCAN, 10503 .policy = nl80211_policy, 10504 .dumpit = nl80211_dump_scan, 10505 }, 10506 { 10507 .cmd = NL80211_CMD_START_SCHED_SCAN, 10508 .doit = nl80211_start_sched_scan, 10509 .policy = nl80211_policy, 10510 .flags = GENL_ADMIN_PERM, 10511 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10512 NL80211_FLAG_NEED_RTNL, 10513 }, 10514 { 10515 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 10516 .doit = nl80211_stop_sched_scan, 10517 .policy = nl80211_policy, 10518 .flags = GENL_ADMIN_PERM, 10519 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10520 NL80211_FLAG_NEED_RTNL, 10521 }, 10522 { 10523 .cmd = NL80211_CMD_AUTHENTICATE, 10524 .doit = nl80211_authenticate, 10525 .policy = nl80211_policy, 10526 .flags = GENL_ADMIN_PERM, 10527 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10528 NL80211_FLAG_NEED_RTNL | 10529 NL80211_FLAG_CLEAR_SKB, 10530 }, 10531 { 10532 .cmd = NL80211_CMD_ASSOCIATE, 10533 .doit = nl80211_associate, 10534 .policy = nl80211_policy, 10535 .flags = GENL_ADMIN_PERM, 10536 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10537 NL80211_FLAG_NEED_RTNL, 10538 }, 10539 { 10540 .cmd = NL80211_CMD_DEAUTHENTICATE, 10541 .doit = nl80211_deauthenticate, 10542 .policy = nl80211_policy, 10543 .flags = GENL_ADMIN_PERM, 10544 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10545 NL80211_FLAG_NEED_RTNL, 10546 }, 10547 { 10548 .cmd = NL80211_CMD_DISASSOCIATE, 10549 .doit = nl80211_disassociate, 10550 .policy = nl80211_policy, 10551 .flags = GENL_ADMIN_PERM, 10552 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10553 NL80211_FLAG_NEED_RTNL, 10554 }, 10555 { 10556 .cmd = NL80211_CMD_JOIN_IBSS, 10557 .doit = nl80211_join_ibss, 10558 .policy = nl80211_policy, 10559 .flags = GENL_ADMIN_PERM, 10560 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10561 NL80211_FLAG_NEED_RTNL, 10562 }, 10563 { 10564 .cmd = NL80211_CMD_LEAVE_IBSS, 10565 .doit = nl80211_leave_ibss, 10566 .policy = nl80211_policy, 10567 .flags = GENL_ADMIN_PERM, 10568 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10569 NL80211_FLAG_NEED_RTNL, 10570 }, 10571 #ifdef CONFIG_NL80211_TESTMODE 10572 { 10573 .cmd = NL80211_CMD_TESTMODE, 10574 .doit = nl80211_testmode_do, 10575 .dumpit = nl80211_testmode_dump, 10576 .policy = nl80211_policy, 10577 .flags = GENL_ADMIN_PERM, 10578 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10579 NL80211_FLAG_NEED_RTNL, 10580 }, 10581 #endif 10582 { 10583 .cmd = NL80211_CMD_CONNECT, 10584 .doit = nl80211_connect, 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_DISCONNECT, 10592 .doit = nl80211_disconnect, 10593 .policy = nl80211_policy, 10594 .flags = GENL_ADMIN_PERM, 10595 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10596 NL80211_FLAG_NEED_RTNL, 10597 }, 10598 { 10599 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 10600 .doit = nl80211_wiphy_netns, 10601 .policy = nl80211_policy, 10602 .flags = GENL_ADMIN_PERM, 10603 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10604 NL80211_FLAG_NEED_RTNL, 10605 }, 10606 { 10607 .cmd = NL80211_CMD_GET_SURVEY, 10608 .policy = nl80211_policy, 10609 .dumpit = nl80211_dump_survey, 10610 }, 10611 { 10612 .cmd = NL80211_CMD_SET_PMKSA, 10613 .doit = nl80211_setdel_pmksa, 10614 .policy = nl80211_policy, 10615 .flags = GENL_ADMIN_PERM, 10616 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10617 NL80211_FLAG_NEED_RTNL, 10618 }, 10619 { 10620 .cmd = NL80211_CMD_DEL_PMKSA, 10621 .doit = nl80211_setdel_pmksa, 10622 .policy = nl80211_policy, 10623 .flags = GENL_ADMIN_PERM, 10624 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10625 NL80211_FLAG_NEED_RTNL, 10626 }, 10627 { 10628 .cmd = NL80211_CMD_FLUSH_PMKSA, 10629 .doit = nl80211_flush_pmksa, 10630 .policy = nl80211_policy, 10631 .flags = GENL_ADMIN_PERM, 10632 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10633 NL80211_FLAG_NEED_RTNL, 10634 }, 10635 { 10636 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 10637 .doit = nl80211_remain_on_channel, 10638 .policy = nl80211_policy, 10639 .flags = GENL_ADMIN_PERM, 10640 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10641 NL80211_FLAG_NEED_RTNL, 10642 }, 10643 { 10644 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10645 .doit = nl80211_cancel_remain_on_channel, 10646 .policy = nl80211_policy, 10647 .flags = GENL_ADMIN_PERM, 10648 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10649 NL80211_FLAG_NEED_RTNL, 10650 }, 10651 { 10652 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 10653 .doit = nl80211_set_tx_bitrate_mask, 10654 .policy = nl80211_policy, 10655 .flags = GENL_ADMIN_PERM, 10656 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10657 NL80211_FLAG_NEED_RTNL, 10658 }, 10659 { 10660 .cmd = NL80211_CMD_REGISTER_FRAME, 10661 .doit = nl80211_register_mgmt, 10662 .policy = nl80211_policy, 10663 .flags = GENL_ADMIN_PERM, 10664 .internal_flags = NL80211_FLAG_NEED_WDEV | 10665 NL80211_FLAG_NEED_RTNL, 10666 }, 10667 { 10668 .cmd = NL80211_CMD_FRAME, 10669 .doit = nl80211_tx_mgmt, 10670 .policy = nl80211_policy, 10671 .flags = GENL_ADMIN_PERM, 10672 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10673 NL80211_FLAG_NEED_RTNL, 10674 }, 10675 { 10676 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 10677 .doit = nl80211_tx_mgmt_cancel_wait, 10678 .policy = nl80211_policy, 10679 .flags = GENL_ADMIN_PERM, 10680 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10681 NL80211_FLAG_NEED_RTNL, 10682 }, 10683 { 10684 .cmd = NL80211_CMD_SET_POWER_SAVE, 10685 .doit = nl80211_set_power_save, 10686 .policy = nl80211_policy, 10687 .flags = GENL_ADMIN_PERM, 10688 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10689 NL80211_FLAG_NEED_RTNL, 10690 }, 10691 { 10692 .cmd = NL80211_CMD_GET_POWER_SAVE, 10693 .doit = nl80211_get_power_save, 10694 .policy = nl80211_policy, 10695 /* can be retrieved by unprivileged users */ 10696 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10697 NL80211_FLAG_NEED_RTNL, 10698 }, 10699 { 10700 .cmd = NL80211_CMD_SET_CQM, 10701 .doit = nl80211_set_cqm, 10702 .policy = nl80211_policy, 10703 .flags = GENL_ADMIN_PERM, 10704 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10705 NL80211_FLAG_NEED_RTNL, 10706 }, 10707 { 10708 .cmd = NL80211_CMD_SET_CHANNEL, 10709 .doit = nl80211_set_channel, 10710 .policy = nl80211_policy, 10711 .flags = GENL_ADMIN_PERM, 10712 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10713 NL80211_FLAG_NEED_RTNL, 10714 }, 10715 { 10716 .cmd = NL80211_CMD_SET_WDS_PEER, 10717 .doit = nl80211_set_wds_peer, 10718 .policy = nl80211_policy, 10719 .flags = GENL_ADMIN_PERM, 10720 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10721 NL80211_FLAG_NEED_RTNL, 10722 }, 10723 { 10724 .cmd = NL80211_CMD_JOIN_MESH, 10725 .doit = nl80211_join_mesh, 10726 .policy = nl80211_policy, 10727 .flags = GENL_ADMIN_PERM, 10728 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10729 NL80211_FLAG_NEED_RTNL, 10730 }, 10731 { 10732 .cmd = NL80211_CMD_LEAVE_MESH, 10733 .doit = nl80211_leave_mesh, 10734 .policy = nl80211_policy, 10735 .flags = GENL_ADMIN_PERM, 10736 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10737 NL80211_FLAG_NEED_RTNL, 10738 }, 10739 { 10740 .cmd = NL80211_CMD_JOIN_OCB, 10741 .doit = nl80211_join_ocb, 10742 .policy = nl80211_policy, 10743 .flags = GENL_ADMIN_PERM, 10744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10745 NL80211_FLAG_NEED_RTNL, 10746 }, 10747 { 10748 .cmd = NL80211_CMD_LEAVE_OCB, 10749 .doit = nl80211_leave_ocb, 10750 .policy = nl80211_policy, 10751 .flags = GENL_ADMIN_PERM, 10752 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10753 NL80211_FLAG_NEED_RTNL, 10754 }, 10755 #ifdef CONFIG_PM 10756 { 10757 .cmd = NL80211_CMD_GET_WOWLAN, 10758 .doit = nl80211_get_wowlan, 10759 .policy = nl80211_policy, 10760 /* can be retrieved by unprivileged users */ 10761 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10762 NL80211_FLAG_NEED_RTNL, 10763 }, 10764 { 10765 .cmd = NL80211_CMD_SET_WOWLAN, 10766 .doit = nl80211_set_wowlan, 10767 .policy = nl80211_policy, 10768 .flags = GENL_ADMIN_PERM, 10769 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10770 NL80211_FLAG_NEED_RTNL, 10771 }, 10772 #endif 10773 { 10774 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 10775 .doit = nl80211_set_rekey_data, 10776 .policy = nl80211_policy, 10777 .flags = GENL_ADMIN_PERM, 10778 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10779 NL80211_FLAG_NEED_RTNL | 10780 NL80211_FLAG_CLEAR_SKB, 10781 }, 10782 { 10783 .cmd = NL80211_CMD_TDLS_MGMT, 10784 .doit = nl80211_tdls_mgmt, 10785 .policy = nl80211_policy, 10786 .flags = GENL_ADMIN_PERM, 10787 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10788 NL80211_FLAG_NEED_RTNL, 10789 }, 10790 { 10791 .cmd = NL80211_CMD_TDLS_OPER, 10792 .doit = nl80211_tdls_oper, 10793 .policy = nl80211_policy, 10794 .flags = GENL_ADMIN_PERM, 10795 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10796 NL80211_FLAG_NEED_RTNL, 10797 }, 10798 { 10799 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 10800 .doit = nl80211_register_unexpected_frame, 10801 .policy = nl80211_policy, 10802 .flags = GENL_ADMIN_PERM, 10803 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10804 NL80211_FLAG_NEED_RTNL, 10805 }, 10806 { 10807 .cmd = NL80211_CMD_PROBE_CLIENT, 10808 .doit = nl80211_probe_client, 10809 .policy = nl80211_policy, 10810 .flags = GENL_ADMIN_PERM, 10811 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10812 NL80211_FLAG_NEED_RTNL, 10813 }, 10814 { 10815 .cmd = NL80211_CMD_REGISTER_BEACONS, 10816 .doit = nl80211_register_beacons, 10817 .policy = nl80211_policy, 10818 .flags = GENL_ADMIN_PERM, 10819 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10820 NL80211_FLAG_NEED_RTNL, 10821 }, 10822 { 10823 .cmd = NL80211_CMD_SET_NOACK_MAP, 10824 .doit = nl80211_set_noack_map, 10825 .policy = nl80211_policy, 10826 .flags = GENL_ADMIN_PERM, 10827 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10828 NL80211_FLAG_NEED_RTNL, 10829 }, 10830 { 10831 .cmd = NL80211_CMD_START_P2P_DEVICE, 10832 .doit = nl80211_start_p2p_device, 10833 .policy = nl80211_policy, 10834 .flags = GENL_ADMIN_PERM, 10835 .internal_flags = NL80211_FLAG_NEED_WDEV | 10836 NL80211_FLAG_NEED_RTNL, 10837 }, 10838 { 10839 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 10840 .doit = nl80211_stop_p2p_device, 10841 .policy = nl80211_policy, 10842 .flags = GENL_ADMIN_PERM, 10843 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10844 NL80211_FLAG_NEED_RTNL, 10845 }, 10846 { 10847 .cmd = NL80211_CMD_SET_MCAST_RATE, 10848 .doit = nl80211_set_mcast_rate, 10849 .policy = nl80211_policy, 10850 .flags = GENL_ADMIN_PERM, 10851 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10852 NL80211_FLAG_NEED_RTNL, 10853 }, 10854 { 10855 .cmd = NL80211_CMD_SET_MAC_ACL, 10856 .doit = nl80211_set_mac_acl, 10857 .policy = nl80211_policy, 10858 .flags = GENL_ADMIN_PERM, 10859 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10860 NL80211_FLAG_NEED_RTNL, 10861 }, 10862 { 10863 .cmd = NL80211_CMD_RADAR_DETECT, 10864 .doit = nl80211_start_radar_detection, 10865 .policy = nl80211_policy, 10866 .flags = GENL_ADMIN_PERM, 10867 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10868 NL80211_FLAG_NEED_RTNL, 10869 }, 10870 { 10871 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 10872 .doit = nl80211_get_protocol_features, 10873 .policy = nl80211_policy, 10874 }, 10875 { 10876 .cmd = NL80211_CMD_UPDATE_FT_IES, 10877 .doit = nl80211_update_ft_ies, 10878 .policy = nl80211_policy, 10879 .flags = GENL_ADMIN_PERM, 10880 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10881 NL80211_FLAG_NEED_RTNL, 10882 }, 10883 { 10884 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 10885 .doit = nl80211_crit_protocol_start, 10886 .policy = nl80211_policy, 10887 .flags = GENL_ADMIN_PERM, 10888 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10889 NL80211_FLAG_NEED_RTNL, 10890 }, 10891 { 10892 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 10893 .doit = nl80211_crit_protocol_stop, 10894 .policy = nl80211_policy, 10895 .flags = GENL_ADMIN_PERM, 10896 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10897 NL80211_FLAG_NEED_RTNL, 10898 }, 10899 { 10900 .cmd = NL80211_CMD_GET_COALESCE, 10901 .doit = nl80211_get_coalesce, 10902 .policy = nl80211_policy, 10903 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10904 NL80211_FLAG_NEED_RTNL, 10905 }, 10906 { 10907 .cmd = NL80211_CMD_SET_COALESCE, 10908 .doit = nl80211_set_coalesce, 10909 .policy = nl80211_policy, 10910 .flags = GENL_ADMIN_PERM, 10911 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10912 NL80211_FLAG_NEED_RTNL, 10913 }, 10914 { 10915 .cmd = NL80211_CMD_CHANNEL_SWITCH, 10916 .doit = nl80211_channel_switch, 10917 .policy = nl80211_policy, 10918 .flags = GENL_ADMIN_PERM, 10919 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10920 NL80211_FLAG_NEED_RTNL, 10921 }, 10922 { 10923 .cmd = NL80211_CMD_VENDOR, 10924 .doit = nl80211_vendor_cmd, 10925 .policy = nl80211_policy, 10926 .flags = GENL_ADMIN_PERM, 10927 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10928 NL80211_FLAG_NEED_RTNL, 10929 }, 10930 { 10931 .cmd = NL80211_CMD_SET_QOS_MAP, 10932 .doit = nl80211_set_qos_map, 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_ADD_TX_TS, 10940 .doit = nl80211_add_tx_ts, 10941 .policy = nl80211_policy, 10942 .flags = GENL_ADMIN_PERM, 10943 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10944 NL80211_FLAG_NEED_RTNL, 10945 }, 10946 { 10947 .cmd = NL80211_CMD_DEL_TX_TS, 10948 .doit = nl80211_del_tx_ts, 10949 .policy = nl80211_policy, 10950 .flags = GENL_ADMIN_PERM, 10951 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10952 NL80211_FLAG_NEED_RTNL, 10953 }, 10954 { 10955 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 10956 .doit = nl80211_tdls_channel_switch, 10957 .policy = nl80211_policy, 10958 .flags = GENL_ADMIN_PERM, 10959 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10960 NL80211_FLAG_NEED_RTNL, 10961 }, 10962 { 10963 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 10964 .doit = nl80211_tdls_cancel_channel_switch, 10965 .policy = nl80211_policy, 10966 .flags = GENL_ADMIN_PERM, 10967 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10968 NL80211_FLAG_NEED_RTNL, 10969 }, 10970 }; 10971 10972 /* notification functions */ 10973 10974 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 10975 enum nl80211_commands cmd) 10976 { 10977 struct sk_buff *msg; 10978 struct nl80211_dump_wiphy_state state = {}; 10979 10980 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 10981 cmd != NL80211_CMD_DEL_WIPHY); 10982 10983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10984 if (!msg) 10985 return; 10986 10987 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 10988 nlmsg_free(msg); 10989 return; 10990 } 10991 10992 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10993 NL80211_MCGRP_CONFIG, GFP_KERNEL); 10994 } 10995 10996 static int nl80211_add_scan_req(struct sk_buff *msg, 10997 struct cfg80211_registered_device *rdev) 10998 { 10999 struct cfg80211_scan_request *req = rdev->scan_req; 11000 struct nlattr *nest; 11001 int i; 11002 11003 if (WARN_ON(!req)) 11004 return 0; 11005 11006 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11007 if (!nest) 11008 goto nla_put_failure; 11009 for (i = 0; i < req->n_ssids; i++) { 11010 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11011 goto nla_put_failure; 11012 } 11013 nla_nest_end(msg, nest); 11014 11015 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11016 if (!nest) 11017 goto nla_put_failure; 11018 for (i = 0; i < req->n_channels; i++) { 11019 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11020 goto nla_put_failure; 11021 } 11022 nla_nest_end(msg, nest); 11023 11024 if (req->ie && 11025 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11026 goto nla_put_failure; 11027 11028 if (req->flags && 11029 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11030 goto nla_put_failure; 11031 11032 return 0; 11033 nla_put_failure: 11034 return -ENOBUFS; 11035 } 11036 11037 static int nl80211_send_scan_msg(struct sk_buff *msg, 11038 struct cfg80211_registered_device *rdev, 11039 struct wireless_dev *wdev, 11040 u32 portid, u32 seq, int flags, 11041 u32 cmd) 11042 { 11043 void *hdr; 11044 11045 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11046 if (!hdr) 11047 return -1; 11048 11049 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11050 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11051 wdev->netdev->ifindex)) || 11052 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 11053 goto nla_put_failure; 11054 11055 /* ignore errors and send incomplete event anyway */ 11056 nl80211_add_scan_req(msg, rdev); 11057 11058 genlmsg_end(msg, hdr); 11059 return 0; 11060 11061 nla_put_failure: 11062 genlmsg_cancel(msg, hdr); 11063 return -EMSGSIZE; 11064 } 11065 11066 static int 11067 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11068 struct cfg80211_registered_device *rdev, 11069 struct net_device *netdev, 11070 u32 portid, u32 seq, int flags, u32 cmd) 11071 { 11072 void *hdr; 11073 11074 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11075 if (!hdr) 11076 return -1; 11077 11078 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11079 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11080 goto nla_put_failure; 11081 11082 genlmsg_end(msg, hdr); 11083 return 0; 11084 11085 nla_put_failure: 11086 genlmsg_cancel(msg, hdr); 11087 return -EMSGSIZE; 11088 } 11089 11090 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11091 struct wireless_dev *wdev) 11092 { 11093 struct sk_buff *msg; 11094 11095 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11096 if (!msg) 11097 return; 11098 11099 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11100 NL80211_CMD_TRIGGER_SCAN) < 0) { 11101 nlmsg_free(msg); 11102 return; 11103 } 11104 11105 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11106 NL80211_MCGRP_SCAN, GFP_KERNEL); 11107 } 11108 11109 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11110 struct wireless_dev *wdev, bool aborted) 11111 { 11112 struct sk_buff *msg; 11113 11114 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11115 if (!msg) 11116 return NULL; 11117 11118 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11119 aborted ? NL80211_CMD_SCAN_ABORTED : 11120 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11121 nlmsg_free(msg); 11122 return NULL; 11123 } 11124 11125 return msg; 11126 } 11127 11128 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11129 struct sk_buff *msg) 11130 { 11131 if (!msg) 11132 return; 11133 11134 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11135 NL80211_MCGRP_SCAN, GFP_KERNEL); 11136 } 11137 11138 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11139 struct net_device *netdev) 11140 { 11141 struct sk_buff *msg; 11142 11143 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11144 if (!msg) 11145 return; 11146 11147 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11148 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11149 nlmsg_free(msg); 11150 return; 11151 } 11152 11153 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11154 NL80211_MCGRP_SCAN, GFP_KERNEL); 11155 } 11156 11157 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11158 struct net_device *netdev, u32 cmd) 11159 { 11160 struct sk_buff *msg; 11161 11162 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11163 if (!msg) 11164 return; 11165 11166 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 11167 nlmsg_free(msg); 11168 return; 11169 } 11170 11171 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11172 NL80211_MCGRP_SCAN, GFP_KERNEL); 11173 } 11174 11175 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 11176 struct regulatory_request *request) 11177 { 11178 /* Userspace can always count this one always being set */ 11179 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 11180 goto nla_put_failure; 11181 11182 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 11183 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11184 NL80211_REGDOM_TYPE_WORLD)) 11185 goto nla_put_failure; 11186 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 11187 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11188 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 11189 goto nla_put_failure; 11190 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 11191 request->intersect) { 11192 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11193 NL80211_REGDOM_TYPE_INTERSECTION)) 11194 goto nla_put_failure; 11195 } else { 11196 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 11197 NL80211_REGDOM_TYPE_COUNTRY) || 11198 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 11199 request->alpha2)) 11200 goto nla_put_failure; 11201 } 11202 11203 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 11204 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 11205 11206 if (wiphy && 11207 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 11208 goto nla_put_failure; 11209 11210 if (wiphy && 11211 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 11212 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 11213 goto nla_put_failure; 11214 } 11215 11216 return true; 11217 11218 nla_put_failure: 11219 return false; 11220 } 11221 11222 /* 11223 * This can happen on global regulatory changes or device specific settings 11224 * based on custom regulatory domains. 11225 */ 11226 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 11227 struct regulatory_request *request) 11228 { 11229 struct sk_buff *msg; 11230 void *hdr; 11231 11232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11233 if (!msg) 11234 return; 11235 11236 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 11237 if (!hdr) { 11238 nlmsg_free(msg); 11239 return; 11240 } 11241 11242 if (nl80211_reg_change_event_fill(msg, request) == false) 11243 goto nla_put_failure; 11244 11245 genlmsg_end(msg, hdr); 11246 11247 rcu_read_lock(); 11248 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11249 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11250 rcu_read_unlock(); 11251 11252 return; 11253 11254 nla_put_failure: 11255 genlmsg_cancel(msg, hdr); 11256 nlmsg_free(msg); 11257 } 11258 11259 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11260 struct net_device *netdev, 11261 const u8 *buf, size_t len, 11262 enum nl80211_commands cmd, gfp_t gfp, 11263 int uapsd_queues) 11264 { 11265 struct sk_buff *msg; 11266 void *hdr; 11267 11268 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11269 if (!msg) 11270 return; 11271 11272 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11273 if (!hdr) { 11274 nlmsg_free(msg); 11275 return; 11276 } 11277 11278 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11279 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11280 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11281 goto nla_put_failure; 11282 11283 if (uapsd_queues >= 0) { 11284 struct nlattr *nla_wmm = 11285 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11286 if (!nla_wmm) 11287 goto nla_put_failure; 11288 11289 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11290 uapsd_queues)) 11291 goto nla_put_failure; 11292 11293 nla_nest_end(msg, nla_wmm); 11294 } 11295 11296 genlmsg_end(msg, hdr); 11297 11298 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11299 NL80211_MCGRP_MLME, gfp); 11300 return; 11301 11302 nla_put_failure: 11303 genlmsg_cancel(msg, hdr); 11304 nlmsg_free(msg); 11305 } 11306 11307 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11308 struct net_device *netdev, const u8 *buf, 11309 size_t len, gfp_t gfp) 11310 { 11311 nl80211_send_mlme_event(rdev, netdev, buf, len, 11312 NL80211_CMD_AUTHENTICATE, gfp, -1); 11313 } 11314 11315 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11316 struct net_device *netdev, const u8 *buf, 11317 size_t len, gfp_t gfp, int uapsd_queues) 11318 { 11319 nl80211_send_mlme_event(rdev, netdev, buf, len, 11320 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11321 } 11322 11323 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11324 struct net_device *netdev, const u8 *buf, 11325 size_t len, gfp_t gfp) 11326 { 11327 nl80211_send_mlme_event(rdev, netdev, buf, len, 11328 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11329 } 11330 11331 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11332 struct net_device *netdev, const u8 *buf, 11333 size_t len, gfp_t gfp) 11334 { 11335 nl80211_send_mlme_event(rdev, netdev, buf, len, 11336 NL80211_CMD_DISASSOCIATE, gfp, -1); 11337 } 11338 11339 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11340 size_t len) 11341 { 11342 struct wireless_dev *wdev = dev->ieee80211_ptr; 11343 struct wiphy *wiphy = wdev->wiphy; 11344 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11345 const struct ieee80211_mgmt *mgmt = (void *)buf; 11346 u32 cmd; 11347 11348 if (WARN_ON(len < 2)) 11349 return; 11350 11351 if (ieee80211_is_deauth(mgmt->frame_control)) 11352 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11353 else 11354 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11355 11356 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11357 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11358 } 11359 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11360 11361 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11362 struct net_device *netdev, int cmd, 11363 const u8 *addr, gfp_t gfp) 11364 { 11365 struct sk_buff *msg; 11366 void *hdr; 11367 11368 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11369 if (!msg) 11370 return; 11371 11372 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11373 if (!hdr) { 11374 nlmsg_free(msg); 11375 return; 11376 } 11377 11378 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11379 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11380 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11381 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11382 goto nla_put_failure; 11383 11384 genlmsg_end(msg, hdr); 11385 11386 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11387 NL80211_MCGRP_MLME, gfp); 11388 return; 11389 11390 nla_put_failure: 11391 genlmsg_cancel(msg, hdr); 11392 nlmsg_free(msg); 11393 } 11394 11395 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11396 struct net_device *netdev, const u8 *addr, 11397 gfp_t gfp) 11398 { 11399 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11400 addr, gfp); 11401 } 11402 11403 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11404 struct net_device *netdev, const u8 *addr, 11405 gfp_t gfp) 11406 { 11407 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11408 addr, gfp); 11409 } 11410 11411 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11412 struct net_device *netdev, const u8 *bssid, 11413 const u8 *req_ie, size_t req_ie_len, 11414 const u8 *resp_ie, size_t resp_ie_len, 11415 u16 status, gfp_t gfp) 11416 { 11417 struct sk_buff *msg; 11418 void *hdr; 11419 11420 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11421 if (!msg) 11422 return; 11423 11424 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11425 if (!hdr) { 11426 nlmsg_free(msg); 11427 return; 11428 } 11429 11430 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11431 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11432 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11433 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11434 (req_ie && 11435 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11436 (resp_ie && 11437 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11438 goto nla_put_failure; 11439 11440 genlmsg_end(msg, hdr); 11441 11442 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11443 NL80211_MCGRP_MLME, gfp); 11444 return; 11445 11446 nla_put_failure: 11447 genlmsg_cancel(msg, hdr); 11448 nlmsg_free(msg); 11449 11450 } 11451 11452 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11453 struct net_device *netdev, const u8 *bssid, 11454 const u8 *req_ie, size_t req_ie_len, 11455 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11456 { 11457 struct sk_buff *msg; 11458 void *hdr; 11459 11460 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11461 if (!msg) 11462 return; 11463 11464 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11465 if (!hdr) { 11466 nlmsg_free(msg); 11467 return; 11468 } 11469 11470 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11471 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11472 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11473 (req_ie && 11474 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11475 (resp_ie && 11476 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11477 goto nla_put_failure; 11478 11479 genlmsg_end(msg, hdr); 11480 11481 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11482 NL80211_MCGRP_MLME, gfp); 11483 return; 11484 11485 nla_put_failure: 11486 genlmsg_cancel(msg, hdr); 11487 nlmsg_free(msg); 11488 11489 } 11490 11491 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11492 struct net_device *netdev, u16 reason, 11493 const u8 *ie, size_t ie_len, bool from_ap) 11494 { 11495 struct sk_buff *msg; 11496 void *hdr; 11497 11498 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11499 if (!msg) 11500 return; 11501 11502 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 11503 if (!hdr) { 11504 nlmsg_free(msg); 11505 return; 11506 } 11507 11508 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11509 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11510 (from_ap && reason && 11511 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 11512 (from_ap && 11513 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 11514 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 11515 goto nla_put_failure; 11516 11517 genlmsg_end(msg, hdr); 11518 11519 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11520 NL80211_MCGRP_MLME, GFP_KERNEL); 11521 return; 11522 11523 nla_put_failure: 11524 genlmsg_cancel(msg, hdr); 11525 nlmsg_free(msg); 11526 11527 } 11528 11529 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 11530 struct net_device *netdev, const u8 *bssid, 11531 gfp_t gfp) 11532 { 11533 struct sk_buff *msg; 11534 void *hdr; 11535 11536 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11537 if (!msg) 11538 return; 11539 11540 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 11541 if (!hdr) { 11542 nlmsg_free(msg); 11543 return; 11544 } 11545 11546 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11547 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11548 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11549 goto nla_put_failure; 11550 11551 genlmsg_end(msg, hdr); 11552 11553 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11554 NL80211_MCGRP_MLME, gfp); 11555 return; 11556 11557 nla_put_failure: 11558 genlmsg_cancel(msg, hdr); 11559 nlmsg_free(msg); 11560 } 11561 11562 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 11563 const u8* ie, u8 ie_len, gfp_t gfp) 11564 { 11565 struct wireless_dev *wdev = dev->ieee80211_ptr; 11566 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11567 struct sk_buff *msg; 11568 void *hdr; 11569 11570 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11571 return; 11572 11573 trace_cfg80211_notify_new_peer_candidate(dev, addr); 11574 11575 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11576 if (!msg) 11577 return; 11578 11579 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 11580 if (!hdr) { 11581 nlmsg_free(msg); 11582 return; 11583 } 11584 11585 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11586 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11587 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11588 (ie_len && ie && 11589 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 11590 goto nla_put_failure; 11591 11592 genlmsg_end(msg, hdr); 11593 11594 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11595 NL80211_MCGRP_MLME, gfp); 11596 return; 11597 11598 nla_put_failure: 11599 genlmsg_cancel(msg, hdr); 11600 nlmsg_free(msg); 11601 } 11602 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 11603 11604 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 11605 struct net_device *netdev, const u8 *addr, 11606 enum nl80211_key_type key_type, int key_id, 11607 const u8 *tsc, gfp_t gfp) 11608 { 11609 struct sk_buff *msg; 11610 void *hdr; 11611 11612 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11613 if (!msg) 11614 return; 11615 11616 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 11617 if (!hdr) { 11618 nlmsg_free(msg); 11619 return; 11620 } 11621 11622 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11623 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11624 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 11625 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 11626 (key_id != -1 && 11627 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 11628 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 11629 goto nla_put_failure; 11630 11631 genlmsg_end(msg, hdr); 11632 11633 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11634 NL80211_MCGRP_MLME, gfp); 11635 return; 11636 11637 nla_put_failure: 11638 genlmsg_cancel(msg, hdr); 11639 nlmsg_free(msg); 11640 } 11641 11642 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 11643 struct ieee80211_channel *channel_before, 11644 struct ieee80211_channel *channel_after) 11645 { 11646 struct sk_buff *msg; 11647 void *hdr; 11648 struct nlattr *nl_freq; 11649 11650 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 11651 if (!msg) 11652 return; 11653 11654 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 11655 if (!hdr) { 11656 nlmsg_free(msg); 11657 return; 11658 } 11659 11660 /* 11661 * Since we are applying the beacon hint to a wiphy we know its 11662 * wiphy_idx is valid 11663 */ 11664 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 11665 goto nla_put_failure; 11666 11667 /* Before */ 11668 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 11669 if (!nl_freq) 11670 goto nla_put_failure; 11671 if (nl80211_msg_put_channel(msg, channel_before, false)) 11672 goto nla_put_failure; 11673 nla_nest_end(msg, nl_freq); 11674 11675 /* After */ 11676 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 11677 if (!nl_freq) 11678 goto nla_put_failure; 11679 if (nl80211_msg_put_channel(msg, channel_after, false)) 11680 goto nla_put_failure; 11681 nla_nest_end(msg, nl_freq); 11682 11683 genlmsg_end(msg, hdr); 11684 11685 rcu_read_lock(); 11686 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11687 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11688 rcu_read_unlock(); 11689 11690 return; 11691 11692 nla_put_failure: 11693 genlmsg_cancel(msg, hdr); 11694 nlmsg_free(msg); 11695 } 11696 11697 static void nl80211_send_remain_on_chan_event( 11698 int cmd, struct cfg80211_registered_device *rdev, 11699 struct wireless_dev *wdev, u64 cookie, 11700 struct ieee80211_channel *chan, 11701 unsigned int duration, gfp_t gfp) 11702 { 11703 struct sk_buff *msg; 11704 void *hdr; 11705 11706 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11707 if (!msg) 11708 return; 11709 11710 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11711 if (!hdr) { 11712 nlmsg_free(msg); 11713 return; 11714 } 11715 11716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11717 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11718 wdev->netdev->ifindex)) || 11719 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11720 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 11721 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 11722 NL80211_CHAN_NO_HT) || 11723 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 11724 goto nla_put_failure; 11725 11726 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 11727 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 11728 goto nla_put_failure; 11729 11730 genlmsg_end(msg, hdr); 11731 11732 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11733 NL80211_MCGRP_MLME, gfp); 11734 return; 11735 11736 nla_put_failure: 11737 genlmsg_cancel(msg, hdr); 11738 nlmsg_free(msg); 11739 } 11740 11741 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 11742 struct ieee80211_channel *chan, 11743 unsigned int duration, gfp_t gfp) 11744 { 11745 struct wiphy *wiphy = wdev->wiphy; 11746 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11747 11748 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 11749 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 11750 rdev, wdev, cookie, chan, 11751 duration, gfp); 11752 } 11753 EXPORT_SYMBOL(cfg80211_ready_on_channel); 11754 11755 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 11756 struct ieee80211_channel *chan, 11757 gfp_t gfp) 11758 { 11759 struct wiphy *wiphy = wdev->wiphy; 11760 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11761 11762 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 11763 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11764 rdev, wdev, cookie, chan, 0, gfp); 11765 } 11766 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 11767 11768 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 11769 struct station_info *sinfo, gfp_t gfp) 11770 { 11771 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11772 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11773 struct sk_buff *msg; 11774 11775 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 11776 11777 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11778 if (!msg) 11779 return; 11780 11781 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 11782 rdev, dev, mac_addr, sinfo) < 0) { 11783 nlmsg_free(msg); 11784 return; 11785 } 11786 11787 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11788 NL80211_MCGRP_MLME, gfp); 11789 } 11790 EXPORT_SYMBOL(cfg80211_new_sta); 11791 11792 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 11793 struct station_info *sinfo, gfp_t gfp) 11794 { 11795 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11796 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11797 struct sk_buff *msg; 11798 struct station_info empty_sinfo = {}; 11799 11800 if (!sinfo) 11801 sinfo = &empty_sinfo; 11802 11803 trace_cfg80211_del_sta(dev, mac_addr); 11804 11805 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11806 if (!msg) 11807 return; 11808 11809 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 11810 rdev, dev, mac_addr, sinfo) < 0) { 11811 nlmsg_free(msg); 11812 return; 11813 } 11814 11815 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11816 NL80211_MCGRP_MLME, gfp); 11817 } 11818 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 11819 11820 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 11821 enum nl80211_connect_failed_reason reason, 11822 gfp_t gfp) 11823 { 11824 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11825 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11826 struct sk_buff *msg; 11827 void *hdr; 11828 11829 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11830 if (!msg) 11831 return; 11832 11833 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 11834 if (!hdr) { 11835 nlmsg_free(msg); 11836 return; 11837 } 11838 11839 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11840 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 11841 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 11842 goto nla_put_failure; 11843 11844 genlmsg_end(msg, hdr); 11845 11846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11847 NL80211_MCGRP_MLME, gfp); 11848 return; 11849 11850 nla_put_failure: 11851 genlmsg_cancel(msg, hdr); 11852 nlmsg_free(msg); 11853 } 11854 EXPORT_SYMBOL(cfg80211_conn_failed); 11855 11856 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 11857 const u8 *addr, gfp_t gfp) 11858 { 11859 struct wireless_dev *wdev = dev->ieee80211_ptr; 11860 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11861 struct sk_buff *msg; 11862 void *hdr; 11863 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 11864 11865 if (!nlportid) 11866 return false; 11867 11868 msg = nlmsg_new(100, gfp); 11869 if (!msg) 11870 return true; 11871 11872 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11873 if (!hdr) { 11874 nlmsg_free(msg); 11875 return true; 11876 } 11877 11878 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11879 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11880 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11881 goto nla_put_failure; 11882 11883 genlmsg_end(msg, hdr); 11884 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11885 return true; 11886 11887 nla_put_failure: 11888 genlmsg_cancel(msg, hdr); 11889 nlmsg_free(msg); 11890 return true; 11891 } 11892 11893 bool cfg80211_rx_spurious_frame(struct net_device *dev, 11894 const u8 *addr, gfp_t gfp) 11895 { 11896 struct wireless_dev *wdev = dev->ieee80211_ptr; 11897 bool ret; 11898 11899 trace_cfg80211_rx_spurious_frame(dev, addr); 11900 11901 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11902 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 11903 trace_cfg80211_return_bool(false); 11904 return false; 11905 } 11906 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 11907 addr, gfp); 11908 trace_cfg80211_return_bool(ret); 11909 return ret; 11910 } 11911 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 11912 11913 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 11914 const u8 *addr, gfp_t gfp) 11915 { 11916 struct wireless_dev *wdev = dev->ieee80211_ptr; 11917 bool ret; 11918 11919 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 11920 11921 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11922 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11923 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 11924 trace_cfg80211_return_bool(false); 11925 return false; 11926 } 11927 ret = __nl80211_unexpected_frame(dev, 11928 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 11929 addr, gfp); 11930 trace_cfg80211_return_bool(ret); 11931 return ret; 11932 } 11933 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 11934 11935 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 11936 struct wireless_dev *wdev, u32 nlportid, 11937 int freq, int sig_dbm, 11938 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 11939 { 11940 struct net_device *netdev = wdev->netdev; 11941 struct sk_buff *msg; 11942 void *hdr; 11943 11944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11945 if (!msg) 11946 return -ENOMEM; 11947 11948 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 11949 if (!hdr) { 11950 nlmsg_free(msg); 11951 return -ENOMEM; 11952 } 11953 11954 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11955 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11956 netdev->ifindex)) || 11957 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11958 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 11959 (sig_dbm && 11960 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 11961 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 11962 (flags && 11963 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 11964 goto nla_put_failure; 11965 11966 genlmsg_end(msg, hdr); 11967 11968 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11969 11970 nla_put_failure: 11971 genlmsg_cancel(msg, hdr); 11972 nlmsg_free(msg); 11973 return -ENOBUFS; 11974 } 11975 11976 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 11977 const u8 *buf, size_t len, bool ack, gfp_t gfp) 11978 { 11979 struct wiphy *wiphy = wdev->wiphy; 11980 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11981 struct net_device *netdev = wdev->netdev; 11982 struct sk_buff *msg; 11983 void *hdr; 11984 11985 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 11986 11987 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11988 if (!msg) 11989 return; 11990 11991 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 11992 if (!hdr) { 11993 nlmsg_free(msg); 11994 return; 11995 } 11996 11997 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11998 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11999 netdev->ifindex)) || 12000 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 12001 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12002 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12003 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12004 goto nla_put_failure; 12005 12006 genlmsg_end(msg, hdr); 12007 12008 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12009 NL80211_MCGRP_MLME, gfp); 12010 return; 12011 12012 nla_put_failure: 12013 genlmsg_cancel(msg, hdr); 12014 nlmsg_free(msg); 12015 } 12016 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12017 12018 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12019 const char *mac, gfp_t gfp) 12020 { 12021 struct wireless_dev *wdev = dev->ieee80211_ptr; 12022 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12023 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12024 void **cb; 12025 12026 if (!msg) 12027 return NULL; 12028 12029 cb = (void **)msg->cb; 12030 12031 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12032 if (!cb[0]) { 12033 nlmsg_free(msg); 12034 return NULL; 12035 } 12036 12037 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12038 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12039 goto nla_put_failure; 12040 12041 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12042 goto nla_put_failure; 12043 12044 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12045 if (!cb[1]) 12046 goto nla_put_failure; 12047 12048 cb[2] = rdev; 12049 12050 return msg; 12051 nla_put_failure: 12052 nlmsg_free(msg); 12053 return NULL; 12054 } 12055 12056 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12057 { 12058 void **cb = (void **)msg->cb; 12059 struct cfg80211_registered_device *rdev = cb[2]; 12060 12061 nla_nest_end(msg, cb[1]); 12062 genlmsg_end(msg, cb[0]); 12063 12064 memset(msg->cb, 0, sizeof(msg->cb)); 12065 12066 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12067 NL80211_MCGRP_MLME, gfp); 12068 } 12069 12070 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12071 enum nl80211_cqm_rssi_threshold_event rssi_event, 12072 gfp_t gfp) 12073 { 12074 struct sk_buff *msg; 12075 12076 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12077 12078 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12079 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12080 return; 12081 12082 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12083 if (!msg) 12084 return; 12085 12086 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12087 rssi_event)) 12088 goto nla_put_failure; 12089 12090 cfg80211_send_cqm(msg, gfp); 12091 12092 return; 12093 12094 nla_put_failure: 12095 nlmsg_free(msg); 12096 } 12097 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12098 12099 void cfg80211_cqm_txe_notify(struct net_device *dev, 12100 const u8 *peer, u32 num_packets, 12101 u32 rate, u32 intvl, gfp_t gfp) 12102 { 12103 struct sk_buff *msg; 12104 12105 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12106 if (!msg) 12107 return; 12108 12109 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12110 goto nla_put_failure; 12111 12112 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12113 goto nla_put_failure; 12114 12115 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12116 goto nla_put_failure; 12117 12118 cfg80211_send_cqm(msg, gfp); 12119 return; 12120 12121 nla_put_failure: 12122 nlmsg_free(msg); 12123 } 12124 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12125 12126 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12127 const u8 *peer, u32 num_packets, gfp_t gfp) 12128 { 12129 struct sk_buff *msg; 12130 12131 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12132 12133 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12134 if (!msg) 12135 return; 12136 12137 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12138 goto nla_put_failure; 12139 12140 cfg80211_send_cqm(msg, gfp); 12141 return; 12142 12143 nla_put_failure: 12144 nlmsg_free(msg); 12145 } 12146 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12147 12148 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12149 { 12150 struct sk_buff *msg; 12151 12152 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12153 if (!msg) 12154 return; 12155 12156 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12157 goto nla_put_failure; 12158 12159 cfg80211_send_cqm(msg, gfp); 12160 return; 12161 12162 nla_put_failure: 12163 nlmsg_free(msg); 12164 } 12165 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 12166 12167 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 12168 struct net_device *netdev, const u8 *bssid, 12169 const u8 *replay_ctr, gfp_t gfp) 12170 { 12171 struct sk_buff *msg; 12172 struct nlattr *rekey_attr; 12173 void *hdr; 12174 12175 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12176 if (!msg) 12177 return; 12178 12179 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 12180 if (!hdr) { 12181 nlmsg_free(msg); 12182 return; 12183 } 12184 12185 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12186 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12187 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12188 goto nla_put_failure; 12189 12190 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 12191 if (!rekey_attr) 12192 goto nla_put_failure; 12193 12194 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 12195 NL80211_REPLAY_CTR_LEN, replay_ctr)) 12196 goto nla_put_failure; 12197 12198 nla_nest_end(msg, rekey_attr); 12199 12200 genlmsg_end(msg, hdr); 12201 12202 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12203 NL80211_MCGRP_MLME, gfp); 12204 return; 12205 12206 nla_put_failure: 12207 genlmsg_cancel(msg, hdr); 12208 nlmsg_free(msg); 12209 } 12210 12211 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 12212 const u8 *replay_ctr, gfp_t gfp) 12213 { 12214 struct wireless_dev *wdev = dev->ieee80211_ptr; 12215 struct wiphy *wiphy = wdev->wiphy; 12216 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12217 12218 trace_cfg80211_gtk_rekey_notify(dev, bssid); 12219 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 12220 } 12221 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 12222 12223 static void 12224 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 12225 struct net_device *netdev, int index, 12226 const u8 *bssid, bool preauth, gfp_t gfp) 12227 { 12228 struct sk_buff *msg; 12229 struct nlattr *attr; 12230 void *hdr; 12231 12232 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12233 if (!msg) 12234 return; 12235 12236 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 12237 if (!hdr) { 12238 nlmsg_free(msg); 12239 return; 12240 } 12241 12242 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12243 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12244 goto nla_put_failure; 12245 12246 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 12247 if (!attr) 12248 goto nla_put_failure; 12249 12250 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12251 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12252 (preauth && 12253 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12254 goto nla_put_failure; 12255 12256 nla_nest_end(msg, attr); 12257 12258 genlmsg_end(msg, hdr); 12259 12260 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12261 NL80211_MCGRP_MLME, gfp); 12262 return; 12263 12264 nla_put_failure: 12265 genlmsg_cancel(msg, hdr); 12266 nlmsg_free(msg); 12267 } 12268 12269 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12270 const u8 *bssid, bool preauth, gfp_t gfp) 12271 { 12272 struct wireless_dev *wdev = dev->ieee80211_ptr; 12273 struct wiphy *wiphy = wdev->wiphy; 12274 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12275 12276 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12277 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12278 } 12279 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12280 12281 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12282 struct net_device *netdev, 12283 struct cfg80211_chan_def *chandef, 12284 gfp_t gfp, 12285 enum nl80211_commands notif, 12286 u8 count) 12287 { 12288 struct sk_buff *msg; 12289 void *hdr; 12290 12291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12292 if (!msg) 12293 return; 12294 12295 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12296 if (!hdr) { 12297 nlmsg_free(msg); 12298 return; 12299 } 12300 12301 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12302 goto nla_put_failure; 12303 12304 if (nl80211_send_chandef(msg, chandef)) 12305 goto nla_put_failure; 12306 12307 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12308 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12309 goto nla_put_failure; 12310 12311 genlmsg_end(msg, hdr); 12312 12313 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12314 NL80211_MCGRP_MLME, gfp); 12315 return; 12316 12317 nla_put_failure: 12318 genlmsg_cancel(msg, hdr); 12319 nlmsg_free(msg); 12320 } 12321 12322 void cfg80211_ch_switch_notify(struct net_device *dev, 12323 struct cfg80211_chan_def *chandef) 12324 { 12325 struct wireless_dev *wdev = dev->ieee80211_ptr; 12326 struct wiphy *wiphy = wdev->wiphy; 12327 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12328 12329 ASSERT_WDEV_LOCK(wdev); 12330 12331 trace_cfg80211_ch_switch_notify(dev, chandef); 12332 12333 wdev->chandef = *chandef; 12334 wdev->preset_chandef = *chandef; 12335 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12336 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12337 } 12338 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12339 12340 void cfg80211_ch_switch_started_notify(struct net_device *dev, 12341 struct cfg80211_chan_def *chandef, 12342 u8 count) 12343 { 12344 struct wireless_dev *wdev = dev->ieee80211_ptr; 12345 struct wiphy *wiphy = wdev->wiphy; 12346 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12347 12348 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12349 12350 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12351 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12352 } 12353 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12354 12355 void 12356 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12357 const struct cfg80211_chan_def *chandef, 12358 enum nl80211_radar_event event, 12359 struct net_device *netdev, gfp_t gfp) 12360 { 12361 struct sk_buff *msg; 12362 void *hdr; 12363 12364 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12365 if (!msg) 12366 return; 12367 12368 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12369 if (!hdr) { 12370 nlmsg_free(msg); 12371 return; 12372 } 12373 12374 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12375 goto nla_put_failure; 12376 12377 /* NOP and radar events don't need a netdev parameter */ 12378 if (netdev) { 12379 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12380 12381 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12382 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12383 goto nla_put_failure; 12384 } 12385 12386 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12387 goto nla_put_failure; 12388 12389 if (nl80211_send_chandef(msg, chandef)) 12390 goto nla_put_failure; 12391 12392 genlmsg_end(msg, hdr); 12393 12394 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12395 NL80211_MCGRP_MLME, gfp); 12396 return; 12397 12398 nla_put_failure: 12399 genlmsg_cancel(msg, hdr); 12400 nlmsg_free(msg); 12401 } 12402 12403 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12404 u64 cookie, bool acked, gfp_t gfp) 12405 { 12406 struct wireless_dev *wdev = dev->ieee80211_ptr; 12407 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12408 struct sk_buff *msg; 12409 void *hdr; 12410 12411 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12412 12413 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12414 12415 if (!msg) 12416 return; 12417 12418 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12419 if (!hdr) { 12420 nlmsg_free(msg); 12421 return; 12422 } 12423 12424 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12425 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12426 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12427 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12428 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12429 goto nla_put_failure; 12430 12431 genlmsg_end(msg, hdr); 12432 12433 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12434 NL80211_MCGRP_MLME, gfp); 12435 return; 12436 12437 nla_put_failure: 12438 genlmsg_cancel(msg, hdr); 12439 nlmsg_free(msg); 12440 } 12441 EXPORT_SYMBOL(cfg80211_probe_status); 12442 12443 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12444 const u8 *frame, size_t len, 12445 int freq, int sig_dbm) 12446 { 12447 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12448 struct sk_buff *msg; 12449 void *hdr; 12450 struct cfg80211_beacon_registration *reg; 12451 12452 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12453 12454 spin_lock_bh(&rdev->beacon_registrations_lock); 12455 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12456 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12457 if (!msg) { 12458 spin_unlock_bh(&rdev->beacon_registrations_lock); 12459 return; 12460 } 12461 12462 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12463 if (!hdr) 12464 goto nla_put_failure; 12465 12466 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12467 (freq && 12468 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12469 (sig_dbm && 12470 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12471 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12472 goto nla_put_failure; 12473 12474 genlmsg_end(msg, hdr); 12475 12476 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12477 } 12478 spin_unlock_bh(&rdev->beacon_registrations_lock); 12479 return; 12480 12481 nla_put_failure: 12482 spin_unlock_bh(&rdev->beacon_registrations_lock); 12483 if (hdr) 12484 genlmsg_cancel(msg, hdr); 12485 nlmsg_free(msg); 12486 } 12487 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12488 12489 #ifdef CONFIG_PM 12490 static int cfg80211_net_detect_results(struct sk_buff *msg, 12491 struct cfg80211_wowlan_wakeup *wakeup) 12492 { 12493 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 12494 struct nlattr *nl_results, *nl_match, *nl_freqs; 12495 int i, j; 12496 12497 nl_results = nla_nest_start( 12498 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 12499 if (!nl_results) 12500 return -EMSGSIZE; 12501 12502 for (i = 0; i < nd->n_matches; i++) { 12503 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 12504 12505 nl_match = nla_nest_start(msg, i); 12506 if (!nl_match) 12507 break; 12508 12509 /* The SSID attribute is optional in nl80211, but for 12510 * simplicity reasons it's always present in the 12511 * cfg80211 structure. If a driver can't pass the 12512 * SSID, that needs to be changed. A zero length SSID 12513 * is still a valid SSID (wildcard), so it cannot be 12514 * used for this purpose. 12515 */ 12516 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 12517 match->ssid.ssid)) { 12518 nla_nest_cancel(msg, nl_match); 12519 goto out; 12520 } 12521 12522 if (match->n_channels) { 12523 nl_freqs = nla_nest_start( 12524 msg, NL80211_ATTR_SCAN_FREQUENCIES); 12525 if (!nl_freqs) { 12526 nla_nest_cancel(msg, nl_match); 12527 goto out; 12528 } 12529 12530 for (j = 0; j < match->n_channels; j++) { 12531 if (nla_put_u32(msg, 12532 NL80211_ATTR_WIPHY_FREQ, 12533 match->channels[j])) { 12534 nla_nest_cancel(msg, nl_freqs); 12535 nla_nest_cancel(msg, nl_match); 12536 goto out; 12537 } 12538 } 12539 12540 nla_nest_end(msg, nl_freqs); 12541 } 12542 12543 nla_nest_end(msg, nl_match); 12544 } 12545 12546 out: 12547 nla_nest_end(msg, nl_results); 12548 return 0; 12549 } 12550 12551 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 12552 struct cfg80211_wowlan_wakeup *wakeup, 12553 gfp_t gfp) 12554 { 12555 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12556 struct sk_buff *msg; 12557 void *hdr; 12558 int size = 200; 12559 12560 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 12561 12562 if (wakeup) 12563 size += wakeup->packet_present_len; 12564 12565 msg = nlmsg_new(size, gfp); 12566 if (!msg) 12567 return; 12568 12569 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 12570 if (!hdr) 12571 goto free_msg; 12572 12573 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12574 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12575 goto free_msg; 12576 12577 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12578 wdev->netdev->ifindex)) 12579 goto free_msg; 12580 12581 if (wakeup) { 12582 struct nlattr *reasons; 12583 12584 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 12585 if (!reasons) 12586 goto free_msg; 12587 12588 if (wakeup->disconnect && 12589 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 12590 goto free_msg; 12591 if (wakeup->magic_pkt && 12592 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 12593 goto free_msg; 12594 if (wakeup->gtk_rekey_failure && 12595 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 12596 goto free_msg; 12597 if (wakeup->eap_identity_req && 12598 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 12599 goto free_msg; 12600 if (wakeup->four_way_handshake && 12601 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 12602 goto free_msg; 12603 if (wakeup->rfkill_release && 12604 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 12605 goto free_msg; 12606 12607 if (wakeup->pattern_idx >= 0 && 12608 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 12609 wakeup->pattern_idx)) 12610 goto free_msg; 12611 12612 if (wakeup->tcp_match && 12613 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 12614 goto free_msg; 12615 12616 if (wakeup->tcp_connlost && 12617 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 12618 goto free_msg; 12619 12620 if (wakeup->tcp_nomoretokens && 12621 nla_put_flag(msg, 12622 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 12623 goto free_msg; 12624 12625 if (wakeup->packet) { 12626 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 12627 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 12628 12629 if (!wakeup->packet_80211) { 12630 pkt_attr = 12631 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 12632 len_attr = 12633 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 12634 } 12635 12636 if (wakeup->packet_len && 12637 nla_put_u32(msg, len_attr, wakeup->packet_len)) 12638 goto free_msg; 12639 12640 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 12641 wakeup->packet)) 12642 goto free_msg; 12643 } 12644 12645 if (wakeup->net_detect && 12646 cfg80211_net_detect_results(msg, wakeup)) 12647 goto free_msg; 12648 12649 nla_nest_end(msg, reasons); 12650 } 12651 12652 genlmsg_end(msg, hdr); 12653 12654 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12655 NL80211_MCGRP_MLME, gfp); 12656 return; 12657 12658 free_msg: 12659 nlmsg_free(msg); 12660 } 12661 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 12662 #endif 12663 12664 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 12665 enum nl80211_tdls_operation oper, 12666 u16 reason_code, gfp_t gfp) 12667 { 12668 struct wireless_dev *wdev = dev->ieee80211_ptr; 12669 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12670 struct sk_buff *msg; 12671 void *hdr; 12672 12673 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 12674 reason_code); 12675 12676 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12677 if (!msg) 12678 return; 12679 12680 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 12681 if (!hdr) { 12682 nlmsg_free(msg); 12683 return; 12684 } 12685 12686 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12687 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12688 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 12689 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 12690 (reason_code > 0 && 12691 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 12692 goto nla_put_failure; 12693 12694 genlmsg_end(msg, hdr); 12695 12696 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12697 NL80211_MCGRP_MLME, gfp); 12698 return; 12699 12700 nla_put_failure: 12701 genlmsg_cancel(msg, hdr); 12702 nlmsg_free(msg); 12703 } 12704 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 12705 12706 static int nl80211_netlink_notify(struct notifier_block * nb, 12707 unsigned long state, 12708 void *_notify) 12709 { 12710 struct netlink_notify *notify = _notify; 12711 struct cfg80211_registered_device *rdev; 12712 struct wireless_dev *wdev; 12713 struct cfg80211_beacon_registration *reg, *tmp; 12714 12715 if (state != NETLINK_URELEASE) 12716 return NOTIFY_DONE; 12717 12718 rcu_read_lock(); 12719 12720 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 12721 bool schedule_destroy_work = false; 12722 bool schedule_scan_stop = false; 12723 struct cfg80211_sched_scan_request *sched_scan_req = 12724 rcu_dereference(rdev->sched_scan_req); 12725 12726 if (sched_scan_req && notify->portid && 12727 sched_scan_req->owner_nlportid == notify->portid) 12728 schedule_scan_stop = true; 12729 12730 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 12731 cfg80211_mlme_unregister_socket(wdev, notify->portid); 12732 12733 if (wdev->owner_nlportid == notify->portid) 12734 schedule_destroy_work = true; 12735 } 12736 12737 spin_lock_bh(&rdev->beacon_registrations_lock); 12738 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 12739 list) { 12740 if (reg->nlportid == notify->portid) { 12741 list_del(®->list); 12742 kfree(reg); 12743 break; 12744 } 12745 } 12746 spin_unlock_bh(&rdev->beacon_registrations_lock); 12747 12748 if (schedule_destroy_work) { 12749 struct cfg80211_iface_destroy *destroy; 12750 12751 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 12752 if (destroy) { 12753 destroy->nlportid = notify->portid; 12754 spin_lock(&rdev->destroy_list_lock); 12755 list_add(&destroy->list, &rdev->destroy_list); 12756 spin_unlock(&rdev->destroy_list_lock); 12757 schedule_work(&rdev->destroy_work); 12758 } 12759 } else if (schedule_scan_stop) { 12760 sched_scan_req->owner_nlportid = 0; 12761 12762 if (rdev->ops->sched_scan_stop && 12763 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 12764 schedule_work(&rdev->sched_scan_stop_wk); 12765 } 12766 } 12767 12768 rcu_read_unlock(); 12769 12770 return NOTIFY_OK; 12771 } 12772 12773 static struct notifier_block nl80211_netlink_notifier = { 12774 .notifier_call = nl80211_netlink_notify, 12775 }; 12776 12777 void cfg80211_ft_event(struct net_device *netdev, 12778 struct cfg80211_ft_event_params *ft_event) 12779 { 12780 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 12781 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12782 struct sk_buff *msg; 12783 void *hdr; 12784 12785 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 12786 12787 if (!ft_event->target_ap) 12788 return; 12789 12790 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12791 if (!msg) 12792 return; 12793 12794 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 12795 if (!hdr) 12796 goto out; 12797 12798 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12799 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12800 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 12801 goto out; 12802 12803 if (ft_event->ies && 12804 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 12805 goto out; 12806 if (ft_event->ric_ies && 12807 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 12808 ft_event->ric_ies)) 12809 goto out; 12810 12811 genlmsg_end(msg, hdr); 12812 12813 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12814 NL80211_MCGRP_MLME, GFP_KERNEL); 12815 return; 12816 out: 12817 nlmsg_free(msg); 12818 } 12819 EXPORT_SYMBOL(cfg80211_ft_event); 12820 12821 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 12822 { 12823 struct cfg80211_registered_device *rdev; 12824 struct sk_buff *msg; 12825 void *hdr; 12826 u32 nlportid; 12827 12828 rdev = wiphy_to_rdev(wdev->wiphy); 12829 if (!rdev->crit_proto_nlportid) 12830 return; 12831 12832 nlportid = rdev->crit_proto_nlportid; 12833 rdev->crit_proto_nlportid = 0; 12834 12835 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12836 if (!msg) 12837 return; 12838 12839 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 12840 if (!hdr) 12841 goto nla_put_failure; 12842 12843 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12844 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12845 goto nla_put_failure; 12846 12847 genlmsg_end(msg, hdr); 12848 12849 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12850 return; 12851 12852 nla_put_failure: 12853 if (hdr) 12854 genlmsg_cancel(msg, hdr); 12855 nlmsg_free(msg); 12856 12857 } 12858 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 12859 12860 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 12861 { 12862 struct wiphy *wiphy = wdev->wiphy; 12863 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12864 struct sk_buff *msg; 12865 void *hdr; 12866 12867 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12868 if (!msg) 12869 return; 12870 12871 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 12872 if (!hdr) 12873 goto out; 12874 12875 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12876 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 12877 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12878 goto out; 12879 12880 genlmsg_end(msg, hdr); 12881 12882 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 12883 NL80211_MCGRP_MLME, GFP_KERNEL); 12884 return; 12885 out: 12886 nlmsg_free(msg); 12887 } 12888 12889 /* initialisation/exit functions */ 12890 12891 int nl80211_init(void) 12892 { 12893 int err; 12894 12895 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 12896 nl80211_mcgrps); 12897 if (err) 12898 return err; 12899 12900 err = netlink_register_notifier(&nl80211_netlink_notifier); 12901 if (err) 12902 goto err_out; 12903 12904 return 0; 12905 err_out: 12906 genl_unregister_family(&nl80211_fam); 12907 return err; 12908 } 12909 12910 void nl80211_exit(void) 12911 { 12912 netlink_unregister_notifier(&nl80211_netlink_notifier); 12913 genl_unregister_family(&nl80211_fam); 12914 } 12915