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 = "config", }, 63 [NL80211_MCGRP_SCAN] = { .name = "scan", }, 64 [NL80211_MCGRP_REGULATORY] = { .name = "regulatory", }, 65 [NL80211_MCGRP_MLME] = { .name = "mlme", }, 66 [NL80211_MCGRP_VENDOR] = { .name = "vendor", }, 67 #ifdef CONFIG_NL80211_TESTMODE 68 [NL80211_MCGRP_TESTMODE] = { .name = "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 }; 400 401 /* policy for the key attributes */ 402 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 403 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 404 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 405 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 406 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 407 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 408 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 409 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 410 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 411 }; 412 413 /* policy for the key default flags */ 414 static const struct nla_policy 415 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 416 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 417 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 418 }; 419 420 /* policy for WoWLAN attributes */ 421 static const struct nla_policy 422 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 423 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 424 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 425 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 426 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 427 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 428 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 429 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 430 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 431 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 432 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 433 }; 434 435 static const struct nla_policy 436 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 437 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 438 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 439 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 440 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 441 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 442 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 443 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 444 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 445 }, 446 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 447 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 448 }, 449 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 450 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 451 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 452 }; 453 454 /* policy for coalesce rule attributes */ 455 static const struct nla_policy 456 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 457 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 458 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 459 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 460 }; 461 462 /* policy for GTK rekey offload attributes */ 463 static const struct nla_policy 464 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 465 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 466 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 467 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 468 }; 469 470 static const struct nla_policy 471 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 472 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 473 .len = IEEE80211_MAX_SSID_LEN }, 474 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 475 }; 476 477 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 478 struct netlink_callback *cb, 479 struct cfg80211_registered_device **rdev, 480 struct wireless_dev **wdev) 481 { 482 int err; 483 484 rtnl_lock(); 485 486 if (!cb->args[0]) { 487 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 488 nl80211_fam.attrbuf, nl80211_fam.maxattr, 489 nl80211_policy); 490 if (err) 491 goto out_unlock; 492 493 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 494 nl80211_fam.attrbuf); 495 if (IS_ERR(*wdev)) { 496 err = PTR_ERR(*wdev); 497 goto out_unlock; 498 } 499 *rdev = wiphy_to_rdev((*wdev)->wiphy); 500 /* 0 is the first index - add 1 to parse only once */ 501 cb->args[0] = (*rdev)->wiphy_idx + 1; 502 cb->args[1] = (*wdev)->identifier; 503 } else { 504 /* subtract the 1 again here */ 505 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 506 struct wireless_dev *tmp; 507 508 if (!wiphy) { 509 err = -ENODEV; 510 goto out_unlock; 511 } 512 *rdev = wiphy_to_rdev(wiphy); 513 *wdev = NULL; 514 515 list_for_each_entry(tmp, &(*rdev)->wdev_list, list) { 516 if (tmp->identifier == cb->args[1]) { 517 *wdev = tmp; 518 break; 519 } 520 } 521 522 if (!*wdev) { 523 err = -ENODEV; 524 goto out_unlock; 525 } 526 } 527 528 return 0; 529 out_unlock: 530 rtnl_unlock(); 531 return err; 532 } 533 534 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 535 { 536 rtnl_unlock(); 537 } 538 539 /* IE validation */ 540 static bool is_valid_ie_attr(const struct nlattr *attr) 541 { 542 const u8 *pos; 543 int len; 544 545 if (!attr) 546 return true; 547 548 pos = nla_data(attr); 549 len = nla_len(attr); 550 551 while (len) { 552 u8 elemlen; 553 554 if (len < 2) 555 return false; 556 len -= 2; 557 558 elemlen = pos[1]; 559 if (elemlen > len) 560 return false; 561 562 len -= elemlen; 563 pos += 2 + elemlen; 564 } 565 566 return true; 567 } 568 569 /* message building helper */ 570 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 571 int flags, u8 cmd) 572 { 573 /* since there is no private header just add the generic one */ 574 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 575 } 576 577 static int nl80211_msg_put_channel(struct sk_buff *msg, 578 struct ieee80211_channel *chan, 579 bool large) 580 { 581 /* Some channels must be completely excluded from the 582 * list to protect old user-space tools from breaking 583 */ 584 if (!large && chan->flags & 585 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 586 return 0; 587 588 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 589 chan->center_freq)) 590 goto nla_put_failure; 591 592 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 593 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 594 goto nla_put_failure; 595 if (chan->flags & IEEE80211_CHAN_NO_IR) { 596 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 597 goto nla_put_failure; 598 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 599 goto nla_put_failure; 600 } 601 if (chan->flags & IEEE80211_CHAN_RADAR) { 602 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 603 goto nla_put_failure; 604 if (large) { 605 u32 time; 606 607 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 608 609 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 610 chan->dfs_state)) 611 goto nla_put_failure; 612 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 613 time)) 614 goto nla_put_failure; 615 if (nla_put_u32(msg, 616 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 617 chan->dfs_cac_ms)) 618 goto nla_put_failure; 619 } 620 } 621 622 if (large) { 623 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 624 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 625 goto nla_put_failure; 626 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 627 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 628 goto nla_put_failure; 629 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 630 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 631 goto nla_put_failure; 632 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 633 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 634 goto nla_put_failure; 635 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 636 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 637 goto nla_put_failure; 638 if ((chan->flags & IEEE80211_CHAN_GO_CONCURRENT) && 639 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_GO_CONCURRENT)) 640 goto nla_put_failure; 641 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 642 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 643 goto nla_put_failure; 644 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 645 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 646 goto nla_put_failure; 647 } 648 649 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 650 DBM_TO_MBM(chan->max_power))) 651 goto nla_put_failure; 652 653 return 0; 654 655 nla_put_failure: 656 return -ENOBUFS; 657 } 658 659 /* netlink command implementations */ 660 661 struct key_parse { 662 struct key_params p; 663 int idx; 664 int type; 665 bool def, defmgmt; 666 bool def_uni, def_multi; 667 }; 668 669 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 670 { 671 struct nlattr *tb[NL80211_KEY_MAX + 1]; 672 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 673 nl80211_key_policy); 674 if (err) 675 return err; 676 677 k->def = !!tb[NL80211_KEY_DEFAULT]; 678 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 679 680 if (k->def) { 681 k->def_uni = true; 682 k->def_multi = true; 683 } 684 if (k->defmgmt) 685 k->def_multi = true; 686 687 if (tb[NL80211_KEY_IDX]) 688 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 689 690 if (tb[NL80211_KEY_DATA]) { 691 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 692 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 693 } 694 695 if (tb[NL80211_KEY_SEQ]) { 696 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 697 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 698 } 699 700 if (tb[NL80211_KEY_CIPHER]) 701 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 702 703 if (tb[NL80211_KEY_TYPE]) { 704 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 705 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 706 return -EINVAL; 707 } 708 709 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 710 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 711 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 712 tb[NL80211_KEY_DEFAULT_TYPES], 713 nl80211_key_default_policy); 714 if (err) 715 return err; 716 717 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 718 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 719 } 720 721 return 0; 722 } 723 724 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 725 { 726 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 727 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 728 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 729 } 730 731 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 732 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 733 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 734 } 735 736 if (info->attrs[NL80211_ATTR_KEY_IDX]) 737 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 738 739 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 740 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 741 742 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 743 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 744 745 if (k->def) { 746 k->def_uni = true; 747 k->def_multi = true; 748 } 749 if (k->defmgmt) 750 k->def_multi = true; 751 752 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 753 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 754 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 755 return -EINVAL; 756 } 757 758 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 759 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 760 int err = nla_parse_nested( 761 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 762 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 763 nl80211_key_default_policy); 764 if (err) 765 return err; 766 767 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 768 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 769 } 770 771 return 0; 772 } 773 774 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 775 { 776 int err; 777 778 memset(k, 0, sizeof(*k)); 779 k->idx = -1; 780 k->type = -1; 781 782 if (info->attrs[NL80211_ATTR_KEY]) 783 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 784 else 785 err = nl80211_parse_key_old(info, k); 786 787 if (err) 788 return err; 789 790 if (k->def && k->defmgmt) 791 return -EINVAL; 792 793 if (k->defmgmt) { 794 if (k->def_uni || !k->def_multi) 795 return -EINVAL; 796 } 797 798 if (k->idx != -1) { 799 if (k->defmgmt) { 800 if (k->idx < 4 || k->idx > 5) 801 return -EINVAL; 802 } else if (k->def) { 803 if (k->idx < 0 || k->idx > 3) 804 return -EINVAL; 805 } else { 806 if (k->idx < 0 || k->idx > 5) 807 return -EINVAL; 808 } 809 } 810 811 return 0; 812 } 813 814 static struct cfg80211_cached_keys * 815 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 816 struct nlattr *keys, bool *no_ht) 817 { 818 struct key_parse parse; 819 struct nlattr *key; 820 struct cfg80211_cached_keys *result; 821 int rem, err, def = 0; 822 823 result = kzalloc(sizeof(*result), GFP_KERNEL); 824 if (!result) 825 return ERR_PTR(-ENOMEM); 826 827 result->def = -1; 828 result->defmgmt = -1; 829 830 nla_for_each_nested(key, keys, rem) { 831 memset(&parse, 0, sizeof(parse)); 832 parse.idx = -1; 833 834 err = nl80211_parse_key_new(key, &parse); 835 if (err) 836 goto error; 837 err = -EINVAL; 838 if (!parse.p.key) 839 goto error; 840 if (parse.idx < 0 || parse.idx > 4) 841 goto error; 842 if (parse.def) { 843 if (def) 844 goto error; 845 def = 1; 846 result->def = parse.idx; 847 if (!parse.def_uni || !parse.def_multi) 848 goto error; 849 } else if (parse.defmgmt) 850 goto error; 851 err = cfg80211_validate_key_settings(rdev, &parse.p, 852 parse.idx, false, NULL); 853 if (err) 854 goto error; 855 result->params[parse.idx].cipher = parse.p.cipher; 856 result->params[parse.idx].key_len = parse.p.key_len; 857 result->params[parse.idx].key = result->data[parse.idx]; 858 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 859 860 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 861 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 862 if (no_ht) 863 *no_ht = true; 864 } 865 } 866 867 return result; 868 error: 869 kfree(result); 870 return ERR_PTR(err); 871 } 872 873 static int nl80211_key_allowed(struct wireless_dev *wdev) 874 { 875 ASSERT_WDEV_LOCK(wdev); 876 877 switch (wdev->iftype) { 878 case NL80211_IFTYPE_AP: 879 case NL80211_IFTYPE_AP_VLAN: 880 case NL80211_IFTYPE_P2P_GO: 881 case NL80211_IFTYPE_MESH_POINT: 882 break; 883 case NL80211_IFTYPE_ADHOC: 884 case NL80211_IFTYPE_STATION: 885 case NL80211_IFTYPE_P2P_CLIENT: 886 if (!wdev->current_bss) 887 return -ENOLINK; 888 break; 889 case NL80211_IFTYPE_UNSPECIFIED: 890 case NL80211_IFTYPE_OCB: 891 case NL80211_IFTYPE_MONITOR: 892 case NL80211_IFTYPE_P2P_DEVICE: 893 case NL80211_IFTYPE_WDS: 894 case NUM_NL80211_IFTYPES: 895 return -EINVAL; 896 } 897 898 return 0; 899 } 900 901 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 902 struct nlattr *tb) 903 { 904 struct ieee80211_channel *chan; 905 906 if (tb == NULL) 907 return NULL; 908 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 909 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 910 return NULL; 911 return chan; 912 } 913 914 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 915 { 916 struct nlattr *nl_modes = nla_nest_start(msg, attr); 917 int i; 918 919 if (!nl_modes) 920 goto nla_put_failure; 921 922 i = 0; 923 while (ifmodes) { 924 if ((ifmodes & 1) && nla_put_flag(msg, i)) 925 goto nla_put_failure; 926 ifmodes >>= 1; 927 i++; 928 } 929 930 nla_nest_end(msg, nl_modes); 931 return 0; 932 933 nla_put_failure: 934 return -ENOBUFS; 935 } 936 937 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 938 struct sk_buff *msg, 939 bool large) 940 { 941 struct nlattr *nl_combis; 942 int i, j; 943 944 nl_combis = nla_nest_start(msg, 945 NL80211_ATTR_INTERFACE_COMBINATIONS); 946 if (!nl_combis) 947 goto nla_put_failure; 948 949 for (i = 0; i < wiphy->n_iface_combinations; i++) { 950 const struct ieee80211_iface_combination *c; 951 struct nlattr *nl_combi, *nl_limits; 952 953 c = &wiphy->iface_combinations[i]; 954 955 nl_combi = nla_nest_start(msg, i + 1); 956 if (!nl_combi) 957 goto nla_put_failure; 958 959 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 960 if (!nl_limits) 961 goto nla_put_failure; 962 963 for (j = 0; j < c->n_limits; j++) { 964 struct nlattr *nl_limit; 965 966 nl_limit = nla_nest_start(msg, j + 1); 967 if (!nl_limit) 968 goto nla_put_failure; 969 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 970 c->limits[j].max)) 971 goto nla_put_failure; 972 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 973 c->limits[j].types)) 974 goto nla_put_failure; 975 nla_nest_end(msg, nl_limit); 976 } 977 978 nla_nest_end(msg, nl_limits); 979 980 if (c->beacon_int_infra_match && 981 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 982 goto nla_put_failure; 983 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 984 c->num_different_channels) || 985 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 986 c->max_interfaces)) 987 goto nla_put_failure; 988 if (large && 989 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 990 c->radar_detect_widths) || 991 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 992 c->radar_detect_regions))) 993 goto nla_put_failure; 994 995 nla_nest_end(msg, nl_combi); 996 } 997 998 nla_nest_end(msg, nl_combis); 999 1000 return 0; 1001 nla_put_failure: 1002 return -ENOBUFS; 1003 } 1004 1005 #ifdef CONFIG_PM 1006 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1007 struct sk_buff *msg) 1008 { 1009 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1010 struct nlattr *nl_tcp; 1011 1012 if (!tcp) 1013 return 0; 1014 1015 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1016 if (!nl_tcp) 1017 return -ENOBUFS; 1018 1019 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1020 tcp->data_payload_max)) 1021 return -ENOBUFS; 1022 1023 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1024 tcp->data_payload_max)) 1025 return -ENOBUFS; 1026 1027 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1028 return -ENOBUFS; 1029 1030 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1031 sizeof(*tcp->tok), tcp->tok)) 1032 return -ENOBUFS; 1033 1034 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1035 tcp->data_interval_max)) 1036 return -ENOBUFS; 1037 1038 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1039 tcp->wake_payload_max)) 1040 return -ENOBUFS; 1041 1042 nla_nest_end(msg, nl_tcp); 1043 return 0; 1044 } 1045 1046 static int nl80211_send_wowlan(struct sk_buff *msg, 1047 struct cfg80211_registered_device *rdev, 1048 bool large) 1049 { 1050 struct nlattr *nl_wowlan; 1051 1052 if (!rdev->wiphy.wowlan) 1053 return 0; 1054 1055 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1056 if (!nl_wowlan) 1057 return -ENOBUFS; 1058 1059 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1060 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1061 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1062 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1063 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1064 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1065 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1066 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1067 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1068 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1069 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1070 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1071 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1072 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1073 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1074 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1075 return -ENOBUFS; 1076 1077 if (rdev->wiphy.wowlan->n_patterns) { 1078 struct nl80211_pattern_support pat = { 1079 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1080 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1081 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1082 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1083 }; 1084 1085 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1086 sizeof(pat), &pat)) 1087 return -ENOBUFS; 1088 } 1089 1090 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1091 return -ENOBUFS; 1092 1093 /* TODO: send wowlan net detect */ 1094 1095 nla_nest_end(msg, nl_wowlan); 1096 1097 return 0; 1098 } 1099 #endif 1100 1101 static int nl80211_send_coalesce(struct sk_buff *msg, 1102 struct cfg80211_registered_device *rdev) 1103 { 1104 struct nl80211_coalesce_rule_support rule; 1105 1106 if (!rdev->wiphy.coalesce) 1107 return 0; 1108 1109 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1110 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1111 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1112 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1113 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1114 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1115 1116 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1117 return -ENOBUFS; 1118 1119 return 0; 1120 } 1121 1122 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1123 struct ieee80211_supported_band *sband) 1124 { 1125 struct nlattr *nl_rates, *nl_rate; 1126 struct ieee80211_rate *rate; 1127 int i; 1128 1129 /* add HT info */ 1130 if (sband->ht_cap.ht_supported && 1131 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1132 sizeof(sband->ht_cap.mcs), 1133 &sband->ht_cap.mcs) || 1134 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1135 sband->ht_cap.cap) || 1136 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1137 sband->ht_cap.ampdu_factor) || 1138 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1139 sband->ht_cap.ampdu_density))) 1140 return -ENOBUFS; 1141 1142 /* add VHT info */ 1143 if (sband->vht_cap.vht_supported && 1144 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1145 sizeof(sband->vht_cap.vht_mcs), 1146 &sband->vht_cap.vht_mcs) || 1147 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1148 sband->vht_cap.cap))) 1149 return -ENOBUFS; 1150 1151 /* add bitrates */ 1152 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1153 if (!nl_rates) 1154 return -ENOBUFS; 1155 1156 for (i = 0; i < sband->n_bitrates; i++) { 1157 nl_rate = nla_nest_start(msg, i); 1158 if (!nl_rate) 1159 return -ENOBUFS; 1160 1161 rate = &sband->bitrates[i]; 1162 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1163 rate->bitrate)) 1164 return -ENOBUFS; 1165 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1166 nla_put_flag(msg, 1167 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1168 return -ENOBUFS; 1169 1170 nla_nest_end(msg, nl_rate); 1171 } 1172 1173 nla_nest_end(msg, nl_rates); 1174 1175 return 0; 1176 } 1177 1178 static int 1179 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1180 const struct ieee80211_txrx_stypes *mgmt_stypes) 1181 { 1182 u16 stypes; 1183 struct nlattr *nl_ftypes, *nl_ifs; 1184 enum nl80211_iftype ift; 1185 int i; 1186 1187 if (!mgmt_stypes) 1188 return 0; 1189 1190 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1191 if (!nl_ifs) 1192 return -ENOBUFS; 1193 1194 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1195 nl_ftypes = nla_nest_start(msg, ift); 1196 if (!nl_ftypes) 1197 return -ENOBUFS; 1198 i = 0; 1199 stypes = mgmt_stypes[ift].tx; 1200 while (stypes) { 1201 if ((stypes & 1) && 1202 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1203 (i << 4) | IEEE80211_FTYPE_MGMT)) 1204 return -ENOBUFS; 1205 stypes >>= 1; 1206 i++; 1207 } 1208 nla_nest_end(msg, nl_ftypes); 1209 } 1210 1211 nla_nest_end(msg, nl_ifs); 1212 1213 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1214 if (!nl_ifs) 1215 return -ENOBUFS; 1216 1217 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1218 nl_ftypes = nla_nest_start(msg, ift); 1219 if (!nl_ftypes) 1220 return -ENOBUFS; 1221 i = 0; 1222 stypes = mgmt_stypes[ift].rx; 1223 while (stypes) { 1224 if ((stypes & 1) && 1225 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1226 (i << 4) | IEEE80211_FTYPE_MGMT)) 1227 return -ENOBUFS; 1228 stypes >>= 1; 1229 i++; 1230 } 1231 nla_nest_end(msg, nl_ftypes); 1232 } 1233 nla_nest_end(msg, nl_ifs); 1234 1235 return 0; 1236 } 1237 1238 struct nl80211_dump_wiphy_state { 1239 s64 filter_wiphy; 1240 long start; 1241 long split_start, band_start, chan_start; 1242 bool split; 1243 }; 1244 1245 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1246 enum nl80211_commands cmd, 1247 struct sk_buff *msg, u32 portid, u32 seq, 1248 int flags, struct nl80211_dump_wiphy_state *state) 1249 { 1250 void *hdr; 1251 struct nlattr *nl_bands, *nl_band; 1252 struct nlattr *nl_freqs, *nl_freq; 1253 struct nlattr *nl_cmds; 1254 enum ieee80211_band band; 1255 struct ieee80211_channel *chan; 1256 int i; 1257 const struct ieee80211_txrx_stypes *mgmt_stypes = 1258 rdev->wiphy.mgmt_stypes; 1259 u32 features; 1260 1261 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1262 if (!hdr) 1263 return -ENOBUFS; 1264 1265 if (WARN_ON(!state)) 1266 return -EINVAL; 1267 1268 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1269 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1270 wiphy_name(&rdev->wiphy)) || 1271 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1272 cfg80211_rdev_list_generation)) 1273 goto nla_put_failure; 1274 1275 if (cmd != NL80211_CMD_NEW_WIPHY) 1276 goto finish; 1277 1278 switch (state->split_start) { 1279 case 0: 1280 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1281 rdev->wiphy.retry_short) || 1282 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1283 rdev->wiphy.retry_long) || 1284 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1285 rdev->wiphy.frag_threshold) || 1286 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1287 rdev->wiphy.rts_threshold) || 1288 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1289 rdev->wiphy.coverage_class) || 1290 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1291 rdev->wiphy.max_scan_ssids) || 1292 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1293 rdev->wiphy.max_sched_scan_ssids) || 1294 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1295 rdev->wiphy.max_scan_ie_len) || 1296 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1297 rdev->wiphy.max_sched_scan_ie_len) || 1298 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1299 rdev->wiphy.max_match_sets)) 1300 goto nla_put_failure; 1301 1302 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1303 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1304 goto nla_put_failure; 1305 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1306 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1307 goto nla_put_failure; 1308 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1309 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1310 goto nla_put_failure; 1311 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1312 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1313 goto nla_put_failure; 1314 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1315 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1316 goto nla_put_failure; 1317 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1318 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1319 goto nla_put_failure; 1320 state->split_start++; 1321 if (state->split) 1322 break; 1323 case 1: 1324 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1325 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1326 rdev->wiphy.cipher_suites)) 1327 goto nla_put_failure; 1328 1329 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1330 rdev->wiphy.max_num_pmkids)) 1331 goto nla_put_failure; 1332 1333 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1334 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1335 goto nla_put_failure; 1336 1337 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1338 rdev->wiphy.available_antennas_tx) || 1339 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1340 rdev->wiphy.available_antennas_rx)) 1341 goto nla_put_failure; 1342 1343 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1344 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1345 rdev->wiphy.probe_resp_offload)) 1346 goto nla_put_failure; 1347 1348 if ((rdev->wiphy.available_antennas_tx || 1349 rdev->wiphy.available_antennas_rx) && 1350 rdev->ops->get_antenna) { 1351 u32 tx_ant = 0, rx_ant = 0; 1352 int res; 1353 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1354 if (!res) { 1355 if (nla_put_u32(msg, 1356 NL80211_ATTR_WIPHY_ANTENNA_TX, 1357 tx_ant) || 1358 nla_put_u32(msg, 1359 NL80211_ATTR_WIPHY_ANTENNA_RX, 1360 rx_ant)) 1361 goto nla_put_failure; 1362 } 1363 } 1364 1365 state->split_start++; 1366 if (state->split) 1367 break; 1368 case 2: 1369 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1370 rdev->wiphy.interface_modes)) 1371 goto nla_put_failure; 1372 state->split_start++; 1373 if (state->split) 1374 break; 1375 case 3: 1376 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1377 if (!nl_bands) 1378 goto nla_put_failure; 1379 1380 for (band = state->band_start; 1381 band < IEEE80211_NUM_BANDS; band++) { 1382 struct ieee80211_supported_band *sband; 1383 1384 sband = rdev->wiphy.bands[band]; 1385 1386 if (!sband) 1387 continue; 1388 1389 nl_band = nla_nest_start(msg, band); 1390 if (!nl_band) 1391 goto nla_put_failure; 1392 1393 switch (state->chan_start) { 1394 case 0: 1395 if (nl80211_send_band_rateinfo(msg, sband)) 1396 goto nla_put_failure; 1397 state->chan_start++; 1398 if (state->split) 1399 break; 1400 default: 1401 /* add frequencies */ 1402 nl_freqs = nla_nest_start( 1403 msg, NL80211_BAND_ATTR_FREQS); 1404 if (!nl_freqs) 1405 goto nla_put_failure; 1406 1407 for (i = state->chan_start - 1; 1408 i < sband->n_channels; 1409 i++) { 1410 nl_freq = nla_nest_start(msg, i); 1411 if (!nl_freq) 1412 goto nla_put_failure; 1413 1414 chan = &sband->channels[i]; 1415 1416 if (nl80211_msg_put_channel( 1417 msg, chan, 1418 state->split)) 1419 goto nla_put_failure; 1420 1421 nla_nest_end(msg, nl_freq); 1422 if (state->split) 1423 break; 1424 } 1425 if (i < sband->n_channels) 1426 state->chan_start = i + 2; 1427 else 1428 state->chan_start = 0; 1429 nla_nest_end(msg, nl_freqs); 1430 } 1431 1432 nla_nest_end(msg, nl_band); 1433 1434 if (state->split) { 1435 /* start again here */ 1436 if (state->chan_start) 1437 band--; 1438 break; 1439 } 1440 } 1441 nla_nest_end(msg, nl_bands); 1442 1443 if (band < IEEE80211_NUM_BANDS) 1444 state->band_start = band + 1; 1445 else 1446 state->band_start = 0; 1447 1448 /* if bands & channels are done, continue outside */ 1449 if (state->band_start == 0 && state->chan_start == 0) 1450 state->split_start++; 1451 if (state->split) 1452 break; 1453 case 4: 1454 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1455 if (!nl_cmds) 1456 goto nla_put_failure; 1457 1458 i = 0; 1459 #define CMD(op, n) \ 1460 do { \ 1461 if (rdev->ops->op) { \ 1462 i++; \ 1463 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1464 goto nla_put_failure; \ 1465 } \ 1466 } while (0) 1467 1468 CMD(add_virtual_intf, NEW_INTERFACE); 1469 CMD(change_virtual_intf, SET_INTERFACE); 1470 CMD(add_key, NEW_KEY); 1471 CMD(start_ap, START_AP); 1472 CMD(add_station, NEW_STATION); 1473 CMD(add_mpath, NEW_MPATH); 1474 CMD(update_mesh_config, SET_MESH_CONFIG); 1475 CMD(change_bss, SET_BSS); 1476 CMD(auth, AUTHENTICATE); 1477 CMD(assoc, ASSOCIATE); 1478 CMD(deauth, DEAUTHENTICATE); 1479 CMD(disassoc, DISASSOCIATE); 1480 CMD(join_ibss, JOIN_IBSS); 1481 CMD(join_mesh, JOIN_MESH); 1482 CMD(set_pmksa, SET_PMKSA); 1483 CMD(del_pmksa, DEL_PMKSA); 1484 CMD(flush_pmksa, FLUSH_PMKSA); 1485 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1486 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1487 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1488 CMD(mgmt_tx, FRAME); 1489 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1490 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1491 i++; 1492 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1493 goto nla_put_failure; 1494 } 1495 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1496 rdev->ops->join_mesh) { 1497 i++; 1498 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1499 goto nla_put_failure; 1500 } 1501 CMD(set_wds_peer, SET_WDS_PEER); 1502 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1503 CMD(tdls_mgmt, TDLS_MGMT); 1504 CMD(tdls_oper, TDLS_OPER); 1505 } 1506 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1507 CMD(sched_scan_start, START_SCHED_SCAN); 1508 CMD(probe_client, PROBE_CLIENT); 1509 CMD(set_noack_map, SET_NOACK_MAP); 1510 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1511 i++; 1512 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1513 goto nla_put_failure; 1514 } 1515 CMD(start_p2p_device, START_P2P_DEVICE); 1516 CMD(set_mcast_rate, SET_MCAST_RATE); 1517 #ifdef CONFIG_NL80211_TESTMODE 1518 CMD(testmode_cmd, TESTMODE); 1519 #endif 1520 if (state->split) { 1521 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1522 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1523 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1524 CMD(channel_switch, CHANNEL_SWITCH); 1525 CMD(set_qos_map, SET_QOS_MAP); 1526 if (rdev->wiphy.features & 1527 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1528 CMD(add_tx_ts, ADD_TX_TS); 1529 } 1530 /* add into the if now */ 1531 #undef CMD 1532 1533 if (rdev->ops->connect || rdev->ops->auth) { 1534 i++; 1535 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1536 goto nla_put_failure; 1537 } 1538 1539 if (rdev->ops->disconnect || rdev->ops->deauth) { 1540 i++; 1541 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1542 goto nla_put_failure; 1543 } 1544 1545 nla_nest_end(msg, nl_cmds); 1546 state->split_start++; 1547 if (state->split) 1548 break; 1549 case 5: 1550 if (rdev->ops->remain_on_channel && 1551 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1552 nla_put_u32(msg, 1553 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1554 rdev->wiphy.max_remain_on_channel_duration)) 1555 goto nla_put_failure; 1556 1557 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1558 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1559 goto nla_put_failure; 1560 1561 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1562 goto nla_put_failure; 1563 state->split_start++; 1564 if (state->split) 1565 break; 1566 case 6: 1567 #ifdef CONFIG_PM 1568 if (nl80211_send_wowlan(msg, rdev, state->split)) 1569 goto nla_put_failure; 1570 state->split_start++; 1571 if (state->split) 1572 break; 1573 #else 1574 state->split_start++; 1575 #endif 1576 case 7: 1577 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1578 rdev->wiphy.software_iftypes)) 1579 goto nla_put_failure; 1580 1581 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1582 state->split)) 1583 goto nla_put_failure; 1584 1585 state->split_start++; 1586 if (state->split) 1587 break; 1588 case 8: 1589 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1590 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1591 rdev->wiphy.ap_sme_capa)) 1592 goto nla_put_failure; 1593 1594 features = rdev->wiphy.features; 1595 /* 1596 * We can only add the per-channel limit information if the 1597 * dump is split, otherwise it makes it too big. Therefore 1598 * only advertise it in that case. 1599 */ 1600 if (state->split) 1601 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1602 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1603 goto nla_put_failure; 1604 1605 if (rdev->wiphy.ht_capa_mod_mask && 1606 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1607 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1608 rdev->wiphy.ht_capa_mod_mask)) 1609 goto nla_put_failure; 1610 1611 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1612 rdev->wiphy.max_acl_mac_addrs && 1613 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1614 rdev->wiphy.max_acl_mac_addrs)) 1615 goto nla_put_failure; 1616 1617 /* 1618 * Any information below this point is only available to 1619 * applications that can deal with it being split. This 1620 * helps ensure that newly added capabilities don't break 1621 * older tools by overrunning their buffers. 1622 * 1623 * We still increment split_start so that in the split 1624 * case we'll continue with more data in the next round, 1625 * but break unconditionally so unsplit data stops here. 1626 */ 1627 state->split_start++; 1628 break; 1629 case 9: 1630 if (rdev->wiphy.extended_capabilities && 1631 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1632 rdev->wiphy.extended_capabilities_len, 1633 rdev->wiphy.extended_capabilities) || 1634 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1635 rdev->wiphy.extended_capabilities_len, 1636 rdev->wiphy.extended_capabilities_mask))) 1637 goto nla_put_failure; 1638 1639 if (rdev->wiphy.vht_capa_mod_mask && 1640 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1641 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1642 rdev->wiphy.vht_capa_mod_mask)) 1643 goto nla_put_failure; 1644 1645 state->split_start++; 1646 break; 1647 case 10: 1648 if (nl80211_send_coalesce(msg, rdev)) 1649 goto nla_put_failure; 1650 1651 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1652 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1653 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1654 goto nla_put_failure; 1655 1656 if (rdev->wiphy.max_ap_assoc_sta && 1657 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1658 rdev->wiphy.max_ap_assoc_sta)) 1659 goto nla_put_failure; 1660 1661 state->split_start++; 1662 break; 1663 case 11: 1664 if (rdev->wiphy.n_vendor_commands) { 1665 const struct nl80211_vendor_cmd_info *info; 1666 struct nlattr *nested; 1667 1668 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1669 if (!nested) 1670 goto nla_put_failure; 1671 1672 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1673 info = &rdev->wiphy.vendor_commands[i].info; 1674 if (nla_put(msg, i + 1, sizeof(*info), info)) 1675 goto nla_put_failure; 1676 } 1677 nla_nest_end(msg, nested); 1678 } 1679 1680 if (rdev->wiphy.n_vendor_events) { 1681 const struct nl80211_vendor_cmd_info *info; 1682 struct nlattr *nested; 1683 1684 nested = nla_nest_start(msg, 1685 NL80211_ATTR_VENDOR_EVENTS); 1686 if (!nested) 1687 goto nla_put_failure; 1688 1689 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1690 info = &rdev->wiphy.vendor_events[i]; 1691 if (nla_put(msg, i + 1, sizeof(*info), info)) 1692 goto nla_put_failure; 1693 } 1694 nla_nest_end(msg, nested); 1695 } 1696 state->split_start++; 1697 break; 1698 case 12: 1699 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1700 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1701 rdev->wiphy.max_num_csa_counters)) 1702 goto nla_put_failure; 1703 1704 /* done */ 1705 state->split_start = 0; 1706 break; 1707 } 1708 finish: 1709 return genlmsg_end(msg, hdr); 1710 1711 nla_put_failure: 1712 genlmsg_cancel(msg, hdr); 1713 return -EMSGSIZE; 1714 } 1715 1716 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1717 struct netlink_callback *cb, 1718 struct nl80211_dump_wiphy_state *state) 1719 { 1720 struct nlattr **tb = nl80211_fam.attrbuf; 1721 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1722 tb, nl80211_fam.maxattr, nl80211_policy); 1723 /* ignore parse errors for backward compatibility */ 1724 if (ret) 1725 return 0; 1726 1727 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1728 if (tb[NL80211_ATTR_WIPHY]) 1729 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1730 if (tb[NL80211_ATTR_WDEV]) 1731 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1732 if (tb[NL80211_ATTR_IFINDEX]) { 1733 struct net_device *netdev; 1734 struct cfg80211_registered_device *rdev; 1735 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1736 1737 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1738 if (!netdev) 1739 return -ENODEV; 1740 if (netdev->ieee80211_ptr) { 1741 rdev = wiphy_to_rdev( 1742 netdev->ieee80211_ptr->wiphy); 1743 state->filter_wiphy = rdev->wiphy_idx; 1744 } 1745 } 1746 1747 return 0; 1748 } 1749 1750 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1751 { 1752 int idx = 0, ret; 1753 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1754 struct cfg80211_registered_device *rdev; 1755 1756 rtnl_lock(); 1757 if (!state) { 1758 state = kzalloc(sizeof(*state), GFP_KERNEL); 1759 if (!state) { 1760 rtnl_unlock(); 1761 return -ENOMEM; 1762 } 1763 state->filter_wiphy = -1; 1764 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1765 if (ret) { 1766 kfree(state); 1767 rtnl_unlock(); 1768 return ret; 1769 } 1770 cb->args[0] = (long)state; 1771 } 1772 1773 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1774 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1775 continue; 1776 if (++idx <= state->start) 1777 continue; 1778 if (state->filter_wiphy != -1 && 1779 state->filter_wiphy != rdev->wiphy_idx) 1780 continue; 1781 /* attempt to fit multiple wiphy data chunks into the skb */ 1782 do { 1783 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1784 skb, 1785 NETLINK_CB(cb->skb).portid, 1786 cb->nlh->nlmsg_seq, 1787 NLM_F_MULTI, state); 1788 if (ret < 0) { 1789 /* 1790 * If sending the wiphy data didn't fit (ENOBUFS 1791 * or EMSGSIZE returned), this SKB is still 1792 * empty (so it's not too big because another 1793 * wiphy dataset is already in the skb) and 1794 * we've not tried to adjust the dump allocation 1795 * yet ... then adjust the alloc size to be 1796 * bigger, and return 1 but with the empty skb. 1797 * This results in an empty message being RX'ed 1798 * in userspace, but that is ignored. 1799 * 1800 * We can then retry with the larger buffer. 1801 */ 1802 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1803 !skb->len && !state->split && 1804 cb->min_dump_alloc < 4096) { 1805 cb->min_dump_alloc = 4096; 1806 state->split_start = 0; 1807 rtnl_unlock(); 1808 return 1; 1809 } 1810 idx--; 1811 break; 1812 } 1813 } while (state->split_start > 0); 1814 break; 1815 } 1816 rtnl_unlock(); 1817 1818 state->start = idx; 1819 1820 return skb->len; 1821 } 1822 1823 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1824 { 1825 kfree((void *)cb->args[0]); 1826 return 0; 1827 } 1828 1829 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1830 { 1831 struct sk_buff *msg; 1832 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1833 struct nl80211_dump_wiphy_state state = {}; 1834 1835 msg = nlmsg_new(4096, GFP_KERNEL); 1836 if (!msg) 1837 return -ENOMEM; 1838 1839 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1840 info->snd_portid, info->snd_seq, 0, 1841 &state) < 0) { 1842 nlmsg_free(msg); 1843 return -ENOBUFS; 1844 } 1845 1846 return genlmsg_reply(msg, info); 1847 } 1848 1849 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1850 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1851 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1852 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1853 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1854 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1855 }; 1856 1857 static int parse_txq_params(struct nlattr *tb[], 1858 struct ieee80211_txq_params *txq_params) 1859 { 1860 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1861 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1862 !tb[NL80211_TXQ_ATTR_AIFS]) 1863 return -EINVAL; 1864 1865 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1866 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1867 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1868 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1869 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1870 1871 if (txq_params->ac >= NL80211_NUM_ACS) 1872 return -EINVAL; 1873 1874 return 0; 1875 } 1876 1877 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1878 { 1879 /* 1880 * You can only set the channel explicitly for WDS interfaces, 1881 * all others have their channel managed via their respective 1882 * "establish a connection" command (connect, join, ...) 1883 * 1884 * For AP/GO and mesh mode, the channel can be set with the 1885 * channel userspace API, but is only stored and passed to the 1886 * low-level driver when the AP starts or the mesh is joined. 1887 * This is for backward compatibility, userspace can also give 1888 * the channel in the start-ap or join-mesh commands instead. 1889 * 1890 * Monitors are special as they are normally slaved to 1891 * whatever else is going on, so they have their own special 1892 * operation to set the monitor channel if possible. 1893 */ 1894 return !wdev || 1895 wdev->iftype == NL80211_IFTYPE_AP || 1896 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 1897 wdev->iftype == NL80211_IFTYPE_MONITOR || 1898 wdev->iftype == NL80211_IFTYPE_P2P_GO; 1899 } 1900 1901 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 1902 struct genl_info *info, 1903 struct cfg80211_chan_def *chandef) 1904 { 1905 u32 control_freq; 1906 1907 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 1908 return -EINVAL; 1909 1910 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 1911 1912 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 1913 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 1914 chandef->center_freq1 = control_freq; 1915 chandef->center_freq2 = 0; 1916 1917 /* Primary channel not allowed */ 1918 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 1919 return -EINVAL; 1920 1921 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 1922 enum nl80211_channel_type chantype; 1923 1924 chantype = nla_get_u32( 1925 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 1926 1927 switch (chantype) { 1928 case NL80211_CHAN_NO_HT: 1929 case NL80211_CHAN_HT20: 1930 case NL80211_CHAN_HT40PLUS: 1931 case NL80211_CHAN_HT40MINUS: 1932 cfg80211_chandef_create(chandef, chandef->chan, 1933 chantype); 1934 break; 1935 default: 1936 return -EINVAL; 1937 } 1938 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 1939 chandef->width = 1940 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 1941 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 1942 chandef->center_freq1 = 1943 nla_get_u32( 1944 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 1945 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 1946 chandef->center_freq2 = 1947 nla_get_u32( 1948 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 1949 } 1950 1951 if (!cfg80211_chandef_valid(chandef)) 1952 return -EINVAL; 1953 1954 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 1955 IEEE80211_CHAN_DISABLED)) 1956 return -EINVAL; 1957 1958 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 1959 chandef->width == NL80211_CHAN_WIDTH_10) && 1960 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 1961 return -EINVAL; 1962 1963 return 0; 1964 } 1965 1966 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 1967 struct net_device *dev, 1968 struct genl_info *info) 1969 { 1970 struct cfg80211_chan_def chandef; 1971 int result; 1972 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 1973 struct wireless_dev *wdev = NULL; 1974 1975 if (dev) 1976 wdev = dev->ieee80211_ptr; 1977 if (!nl80211_can_set_dev_channel(wdev)) 1978 return -EOPNOTSUPP; 1979 if (wdev) 1980 iftype = wdev->iftype; 1981 1982 result = nl80211_parse_chandef(rdev, info, &chandef); 1983 if (result) 1984 return result; 1985 1986 switch (iftype) { 1987 case NL80211_IFTYPE_AP: 1988 case NL80211_IFTYPE_P2P_GO: 1989 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, iftype)) { 1990 result = -EINVAL; 1991 break; 1992 } 1993 if (wdev->beacon_interval) { 1994 if (!dev || !rdev->ops->set_ap_chanwidth || 1995 !(rdev->wiphy.features & 1996 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 1997 result = -EBUSY; 1998 break; 1999 } 2000 2001 /* Only allow dynamic channel width changes */ 2002 if (chandef.chan != wdev->preset_chandef.chan) { 2003 result = -EBUSY; 2004 break; 2005 } 2006 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2007 if (result) 2008 break; 2009 } 2010 wdev->preset_chandef = chandef; 2011 result = 0; 2012 break; 2013 case NL80211_IFTYPE_MESH_POINT: 2014 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2015 break; 2016 case NL80211_IFTYPE_MONITOR: 2017 result = cfg80211_set_monitor_channel(rdev, &chandef); 2018 break; 2019 default: 2020 result = -EINVAL; 2021 } 2022 2023 return result; 2024 } 2025 2026 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2027 { 2028 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2029 struct net_device *netdev = info->user_ptr[1]; 2030 2031 return __nl80211_set_channel(rdev, netdev, info); 2032 } 2033 2034 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2035 { 2036 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2037 struct net_device *dev = info->user_ptr[1]; 2038 struct wireless_dev *wdev = dev->ieee80211_ptr; 2039 const u8 *bssid; 2040 2041 if (!info->attrs[NL80211_ATTR_MAC]) 2042 return -EINVAL; 2043 2044 if (netif_running(dev)) 2045 return -EBUSY; 2046 2047 if (!rdev->ops->set_wds_peer) 2048 return -EOPNOTSUPP; 2049 2050 if (wdev->iftype != NL80211_IFTYPE_WDS) 2051 return -EOPNOTSUPP; 2052 2053 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2054 return rdev_set_wds_peer(rdev, dev, bssid); 2055 } 2056 2057 2058 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2059 { 2060 struct cfg80211_registered_device *rdev; 2061 struct net_device *netdev = NULL; 2062 struct wireless_dev *wdev; 2063 int result = 0, rem_txq_params = 0; 2064 struct nlattr *nl_txq_params; 2065 u32 changed; 2066 u8 retry_short = 0, retry_long = 0; 2067 u32 frag_threshold = 0, rts_threshold = 0; 2068 u8 coverage_class = 0; 2069 2070 ASSERT_RTNL(); 2071 2072 /* 2073 * Try to find the wiphy and netdev. Normally this 2074 * function shouldn't need the netdev, but this is 2075 * done for backward compatibility -- previously 2076 * setting the channel was done per wiphy, but now 2077 * it is per netdev. Previous userland like hostapd 2078 * also passed a netdev to set_wiphy, so that it is 2079 * possible to let that go to the right netdev! 2080 */ 2081 2082 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2083 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2084 2085 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2086 if (netdev && netdev->ieee80211_ptr) 2087 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2088 else 2089 netdev = NULL; 2090 } 2091 2092 if (!netdev) { 2093 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2094 info->attrs); 2095 if (IS_ERR(rdev)) 2096 return PTR_ERR(rdev); 2097 wdev = NULL; 2098 netdev = NULL; 2099 result = 0; 2100 } else 2101 wdev = netdev->ieee80211_ptr; 2102 2103 /* 2104 * end workaround code, by now the rdev is available 2105 * and locked, and wdev may or may not be NULL. 2106 */ 2107 2108 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2109 result = cfg80211_dev_rename( 2110 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2111 2112 if (result) 2113 return result; 2114 2115 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2116 struct ieee80211_txq_params txq_params; 2117 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2118 2119 if (!rdev->ops->set_txq_params) 2120 return -EOPNOTSUPP; 2121 2122 if (!netdev) 2123 return -EINVAL; 2124 2125 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2126 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2127 return -EINVAL; 2128 2129 if (!netif_running(netdev)) 2130 return -ENETDOWN; 2131 2132 nla_for_each_nested(nl_txq_params, 2133 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2134 rem_txq_params) { 2135 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2136 nla_data(nl_txq_params), 2137 nla_len(nl_txq_params), 2138 txq_params_policy); 2139 if (result) 2140 return result; 2141 result = parse_txq_params(tb, &txq_params); 2142 if (result) 2143 return result; 2144 2145 result = rdev_set_txq_params(rdev, netdev, 2146 &txq_params); 2147 if (result) 2148 return result; 2149 } 2150 } 2151 2152 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2153 result = __nl80211_set_channel( 2154 rdev, 2155 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2156 info); 2157 if (result) 2158 return result; 2159 } 2160 2161 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2162 struct wireless_dev *txp_wdev = wdev; 2163 enum nl80211_tx_power_setting type; 2164 int idx, mbm = 0; 2165 2166 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2167 txp_wdev = NULL; 2168 2169 if (!rdev->ops->set_tx_power) 2170 return -EOPNOTSUPP; 2171 2172 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2173 type = nla_get_u32(info->attrs[idx]); 2174 2175 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2176 (type != NL80211_TX_POWER_AUTOMATIC)) 2177 return -EINVAL; 2178 2179 if (type != NL80211_TX_POWER_AUTOMATIC) { 2180 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2181 mbm = nla_get_u32(info->attrs[idx]); 2182 } 2183 2184 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2185 if (result) 2186 return result; 2187 } 2188 2189 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2190 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2191 u32 tx_ant, rx_ant; 2192 if ((!rdev->wiphy.available_antennas_tx && 2193 !rdev->wiphy.available_antennas_rx) || 2194 !rdev->ops->set_antenna) 2195 return -EOPNOTSUPP; 2196 2197 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2198 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2199 2200 /* reject antenna configurations which don't match the 2201 * available antenna masks, except for the "all" mask */ 2202 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2203 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2204 return -EINVAL; 2205 2206 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2207 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2208 2209 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2210 if (result) 2211 return result; 2212 } 2213 2214 changed = 0; 2215 2216 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2217 retry_short = nla_get_u8( 2218 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2219 if (retry_short == 0) 2220 return -EINVAL; 2221 2222 changed |= WIPHY_PARAM_RETRY_SHORT; 2223 } 2224 2225 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2226 retry_long = nla_get_u8( 2227 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2228 if (retry_long == 0) 2229 return -EINVAL; 2230 2231 changed |= WIPHY_PARAM_RETRY_LONG; 2232 } 2233 2234 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2235 frag_threshold = nla_get_u32( 2236 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2237 if (frag_threshold < 256) 2238 return -EINVAL; 2239 2240 if (frag_threshold != (u32) -1) { 2241 /* 2242 * Fragments (apart from the last one) are required to 2243 * have even length. Make the fragmentation code 2244 * simpler by stripping LSB should someone try to use 2245 * odd threshold value. 2246 */ 2247 frag_threshold &= ~0x1; 2248 } 2249 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2250 } 2251 2252 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2253 rts_threshold = nla_get_u32( 2254 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2255 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2256 } 2257 2258 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2259 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2260 return -EINVAL; 2261 2262 coverage_class = nla_get_u8( 2263 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2264 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2265 } 2266 2267 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2268 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2269 return -EOPNOTSUPP; 2270 2271 changed |= WIPHY_PARAM_DYN_ACK; 2272 } 2273 2274 if (changed) { 2275 u8 old_retry_short, old_retry_long; 2276 u32 old_frag_threshold, old_rts_threshold; 2277 u8 old_coverage_class; 2278 2279 if (!rdev->ops->set_wiphy_params) 2280 return -EOPNOTSUPP; 2281 2282 old_retry_short = rdev->wiphy.retry_short; 2283 old_retry_long = rdev->wiphy.retry_long; 2284 old_frag_threshold = rdev->wiphy.frag_threshold; 2285 old_rts_threshold = rdev->wiphy.rts_threshold; 2286 old_coverage_class = rdev->wiphy.coverage_class; 2287 2288 if (changed & WIPHY_PARAM_RETRY_SHORT) 2289 rdev->wiphy.retry_short = retry_short; 2290 if (changed & WIPHY_PARAM_RETRY_LONG) 2291 rdev->wiphy.retry_long = retry_long; 2292 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2293 rdev->wiphy.frag_threshold = frag_threshold; 2294 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2295 rdev->wiphy.rts_threshold = rts_threshold; 2296 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2297 rdev->wiphy.coverage_class = coverage_class; 2298 2299 result = rdev_set_wiphy_params(rdev, changed); 2300 if (result) { 2301 rdev->wiphy.retry_short = old_retry_short; 2302 rdev->wiphy.retry_long = old_retry_long; 2303 rdev->wiphy.frag_threshold = old_frag_threshold; 2304 rdev->wiphy.rts_threshold = old_rts_threshold; 2305 rdev->wiphy.coverage_class = old_coverage_class; 2306 } 2307 } 2308 return 0; 2309 } 2310 2311 static inline u64 wdev_id(struct wireless_dev *wdev) 2312 { 2313 return (u64)wdev->identifier | 2314 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2315 } 2316 2317 static int nl80211_send_chandef(struct sk_buff *msg, 2318 const struct cfg80211_chan_def *chandef) 2319 { 2320 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2321 return -EINVAL; 2322 2323 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2324 chandef->chan->center_freq)) 2325 return -ENOBUFS; 2326 switch (chandef->width) { 2327 case NL80211_CHAN_WIDTH_20_NOHT: 2328 case NL80211_CHAN_WIDTH_20: 2329 case NL80211_CHAN_WIDTH_40: 2330 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2331 cfg80211_get_chandef_type(chandef))) 2332 return -ENOBUFS; 2333 break; 2334 default: 2335 break; 2336 } 2337 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2338 return -ENOBUFS; 2339 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2340 return -ENOBUFS; 2341 if (chandef->center_freq2 && 2342 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2343 return -ENOBUFS; 2344 return 0; 2345 } 2346 2347 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2348 struct cfg80211_registered_device *rdev, 2349 struct wireless_dev *wdev, bool removal) 2350 { 2351 struct net_device *dev = wdev->netdev; 2352 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2353 void *hdr; 2354 2355 if (removal) 2356 cmd = NL80211_CMD_DEL_INTERFACE; 2357 2358 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2359 if (!hdr) 2360 return -1; 2361 2362 if (dev && 2363 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2364 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2365 goto nla_put_failure; 2366 2367 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2368 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2369 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 2370 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2371 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2372 rdev->devlist_generation ^ 2373 (cfg80211_rdev_list_generation << 2))) 2374 goto nla_put_failure; 2375 2376 if (rdev->ops->get_channel) { 2377 int ret; 2378 struct cfg80211_chan_def chandef; 2379 2380 ret = rdev_get_channel(rdev, wdev, &chandef); 2381 if (ret == 0) { 2382 if (nl80211_send_chandef(msg, &chandef)) 2383 goto nla_put_failure; 2384 } 2385 } 2386 2387 if (wdev->ssid_len) { 2388 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2389 goto nla_put_failure; 2390 } 2391 2392 return genlmsg_end(msg, hdr); 2393 2394 nla_put_failure: 2395 genlmsg_cancel(msg, hdr); 2396 return -EMSGSIZE; 2397 } 2398 2399 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2400 { 2401 int wp_idx = 0; 2402 int if_idx = 0; 2403 int wp_start = cb->args[0]; 2404 int if_start = cb->args[1]; 2405 struct cfg80211_registered_device *rdev; 2406 struct wireless_dev *wdev; 2407 2408 rtnl_lock(); 2409 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2410 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2411 continue; 2412 if (wp_idx < wp_start) { 2413 wp_idx++; 2414 continue; 2415 } 2416 if_idx = 0; 2417 2418 list_for_each_entry(wdev, &rdev->wdev_list, list) { 2419 if (if_idx < if_start) { 2420 if_idx++; 2421 continue; 2422 } 2423 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2424 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2425 rdev, wdev, false) < 0) { 2426 goto out; 2427 } 2428 if_idx++; 2429 } 2430 2431 wp_idx++; 2432 } 2433 out: 2434 rtnl_unlock(); 2435 2436 cb->args[0] = wp_idx; 2437 cb->args[1] = if_idx; 2438 2439 return skb->len; 2440 } 2441 2442 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2443 { 2444 struct sk_buff *msg; 2445 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2446 struct wireless_dev *wdev = info->user_ptr[1]; 2447 2448 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2449 if (!msg) 2450 return -ENOMEM; 2451 2452 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2453 rdev, wdev, false) < 0) { 2454 nlmsg_free(msg); 2455 return -ENOBUFS; 2456 } 2457 2458 return genlmsg_reply(msg, info); 2459 } 2460 2461 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2462 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2463 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2464 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2465 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2466 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2467 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2468 }; 2469 2470 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2471 { 2472 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2473 int flag; 2474 2475 *mntrflags = 0; 2476 2477 if (!nla) 2478 return -EINVAL; 2479 2480 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2481 nla, mntr_flags_policy)) 2482 return -EINVAL; 2483 2484 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2485 if (flags[flag]) 2486 *mntrflags |= (1<<flag); 2487 2488 return 0; 2489 } 2490 2491 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2492 struct net_device *netdev, u8 use_4addr, 2493 enum nl80211_iftype iftype) 2494 { 2495 if (!use_4addr) { 2496 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2497 return -EBUSY; 2498 return 0; 2499 } 2500 2501 switch (iftype) { 2502 case NL80211_IFTYPE_AP_VLAN: 2503 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2504 return 0; 2505 break; 2506 case NL80211_IFTYPE_STATION: 2507 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2508 return 0; 2509 break; 2510 default: 2511 break; 2512 } 2513 2514 return -EOPNOTSUPP; 2515 } 2516 2517 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2518 { 2519 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2520 struct vif_params params; 2521 int err; 2522 enum nl80211_iftype otype, ntype; 2523 struct net_device *dev = info->user_ptr[1]; 2524 u32 _flags, *flags = NULL; 2525 bool change = false; 2526 2527 memset(¶ms, 0, sizeof(params)); 2528 2529 otype = ntype = dev->ieee80211_ptr->iftype; 2530 2531 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2532 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2533 if (otype != ntype) 2534 change = true; 2535 if (ntype > NL80211_IFTYPE_MAX) 2536 return -EINVAL; 2537 } 2538 2539 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2540 struct wireless_dev *wdev = dev->ieee80211_ptr; 2541 2542 if (ntype != NL80211_IFTYPE_MESH_POINT) 2543 return -EINVAL; 2544 if (netif_running(dev)) 2545 return -EBUSY; 2546 2547 wdev_lock(wdev); 2548 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2549 IEEE80211_MAX_MESH_ID_LEN); 2550 wdev->mesh_id_up_len = 2551 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2552 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2553 wdev->mesh_id_up_len); 2554 wdev_unlock(wdev); 2555 } 2556 2557 if (info->attrs[NL80211_ATTR_4ADDR]) { 2558 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2559 change = true; 2560 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2561 if (err) 2562 return err; 2563 } else { 2564 params.use_4addr = -1; 2565 } 2566 2567 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2568 if (ntype != NL80211_IFTYPE_MONITOR) 2569 return -EINVAL; 2570 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2571 &_flags); 2572 if (err) 2573 return err; 2574 2575 flags = &_flags; 2576 change = true; 2577 } 2578 2579 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2580 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2581 return -EOPNOTSUPP; 2582 2583 if (change) 2584 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2585 else 2586 err = 0; 2587 2588 if (!err && params.use_4addr != -1) 2589 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2590 2591 return err; 2592 } 2593 2594 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2595 { 2596 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2597 struct vif_params params; 2598 struct wireless_dev *wdev; 2599 struct sk_buff *msg, *event; 2600 int err; 2601 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2602 u32 flags; 2603 2604 /* to avoid failing a new interface creation due to pending removal */ 2605 cfg80211_destroy_ifaces(rdev); 2606 2607 memset(¶ms, 0, sizeof(params)); 2608 2609 if (!info->attrs[NL80211_ATTR_IFNAME]) 2610 return -EINVAL; 2611 2612 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2613 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2614 if (type > NL80211_IFTYPE_MAX) 2615 return -EINVAL; 2616 } 2617 2618 if (!rdev->ops->add_virtual_intf || 2619 !(rdev->wiphy.interface_modes & (1 << type))) 2620 return -EOPNOTSUPP; 2621 2622 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2623 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2624 info->attrs[NL80211_ATTR_MAC]) { 2625 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2626 ETH_ALEN); 2627 if (!is_valid_ether_addr(params.macaddr)) 2628 return -EADDRNOTAVAIL; 2629 } 2630 2631 if (info->attrs[NL80211_ATTR_4ADDR]) { 2632 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2633 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2634 if (err) 2635 return err; 2636 } 2637 2638 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2639 if (!msg) 2640 return -ENOMEM; 2641 2642 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2643 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2644 &flags); 2645 2646 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2647 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2648 return -EOPNOTSUPP; 2649 2650 wdev = rdev_add_virtual_intf(rdev, 2651 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2652 type, err ? NULL : &flags, ¶ms); 2653 if (WARN_ON(!wdev)) { 2654 nlmsg_free(msg); 2655 return -EPROTO; 2656 } else if (IS_ERR(wdev)) { 2657 nlmsg_free(msg); 2658 return PTR_ERR(wdev); 2659 } 2660 2661 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2662 wdev->owner_nlportid = info->snd_portid; 2663 2664 switch (type) { 2665 case NL80211_IFTYPE_MESH_POINT: 2666 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2667 break; 2668 wdev_lock(wdev); 2669 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2670 IEEE80211_MAX_MESH_ID_LEN); 2671 wdev->mesh_id_up_len = 2672 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2673 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2674 wdev->mesh_id_up_len); 2675 wdev_unlock(wdev); 2676 break; 2677 case NL80211_IFTYPE_P2P_DEVICE: 2678 /* 2679 * P2P Device doesn't have a netdev, so doesn't go 2680 * through the netdev notifier and must be added here 2681 */ 2682 mutex_init(&wdev->mtx); 2683 INIT_LIST_HEAD(&wdev->event_list); 2684 spin_lock_init(&wdev->event_lock); 2685 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2686 spin_lock_init(&wdev->mgmt_registrations_lock); 2687 2688 wdev->identifier = ++rdev->wdev_id; 2689 list_add_rcu(&wdev->list, &rdev->wdev_list); 2690 rdev->devlist_generation++; 2691 break; 2692 default: 2693 break; 2694 } 2695 2696 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2697 rdev, wdev, false) < 0) { 2698 nlmsg_free(msg); 2699 return -ENOBUFS; 2700 } 2701 2702 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2703 if (event) { 2704 if (nl80211_send_iface(event, 0, 0, 0, 2705 rdev, wdev, false) < 0) { 2706 nlmsg_free(event); 2707 goto out; 2708 } 2709 2710 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2711 event, 0, NL80211_MCGRP_CONFIG, 2712 GFP_KERNEL); 2713 } 2714 2715 out: 2716 return genlmsg_reply(msg, info); 2717 } 2718 2719 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2720 { 2721 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2722 struct wireless_dev *wdev = info->user_ptr[1]; 2723 struct sk_buff *msg; 2724 int status; 2725 2726 if (!rdev->ops->del_virtual_intf) 2727 return -EOPNOTSUPP; 2728 2729 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2730 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2731 nlmsg_free(msg); 2732 msg = NULL; 2733 } 2734 2735 /* 2736 * If we remove a wireless device without a netdev then clear 2737 * user_ptr[1] so that nl80211_post_doit won't dereference it 2738 * to check if it needs to do dev_put(). Otherwise it crashes 2739 * since the wdev has been freed, unlike with a netdev where 2740 * we need the dev_put() for the netdev to really be freed. 2741 */ 2742 if (!wdev->netdev) 2743 info->user_ptr[1] = NULL; 2744 2745 status = rdev_del_virtual_intf(rdev, wdev); 2746 if (status >= 0 && msg) 2747 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2748 msg, 0, NL80211_MCGRP_CONFIG, 2749 GFP_KERNEL); 2750 else 2751 nlmsg_free(msg); 2752 2753 return status; 2754 } 2755 2756 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2757 { 2758 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2759 struct net_device *dev = info->user_ptr[1]; 2760 u16 noack_map; 2761 2762 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2763 return -EINVAL; 2764 2765 if (!rdev->ops->set_noack_map) 2766 return -EOPNOTSUPP; 2767 2768 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2769 2770 return rdev_set_noack_map(rdev, dev, noack_map); 2771 } 2772 2773 struct get_key_cookie { 2774 struct sk_buff *msg; 2775 int error; 2776 int idx; 2777 }; 2778 2779 static void get_key_callback(void *c, struct key_params *params) 2780 { 2781 struct nlattr *key; 2782 struct get_key_cookie *cookie = c; 2783 2784 if ((params->key && 2785 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2786 params->key_len, params->key)) || 2787 (params->seq && 2788 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2789 params->seq_len, params->seq)) || 2790 (params->cipher && 2791 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2792 params->cipher))) 2793 goto nla_put_failure; 2794 2795 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2796 if (!key) 2797 goto nla_put_failure; 2798 2799 if ((params->key && 2800 nla_put(cookie->msg, NL80211_KEY_DATA, 2801 params->key_len, params->key)) || 2802 (params->seq && 2803 nla_put(cookie->msg, NL80211_KEY_SEQ, 2804 params->seq_len, params->seq)) || 2805 (params->cipher && 2806 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2807 params->cipher))) 2808 goto nla_put_failure; 2809 2810 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2811 goto nla_put_failure; 2812 2813 nla_nest_end(cookie->msg, key); 2814 2815 return; 2816 nla_put_failure: 2817 cookie->error = 1; 2818 } 2819 2820 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2821 { 2822 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2823 int err; 2824 struct net_device *dev = info->user_ptr[1]; 2825 u8 key_idx = 0; 2826 const u8 *mac_addr = NULL; 2827 bool pairwise; 2828 struct get_key_cookie cookie = { 2829 .error = 0, 2830 }; 2831 void *hdr; 2832 struct sk_buff *msg; 2833 2834 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2835 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2836 2837 if (key_idx > 5) 2838 return -EINVAL; 2839 2840 if (info->attrs[NL80211_ATTR_MAC]) 2841 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2842 2843 pairwise = !!mac_addr; 2844 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 2845 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 2846 if (kt >= NUM_NL80211_KEYTYPES) 2847 return -EINVAL; 2848 if (kt != NL80211_KEYTYPE_GROUP && 2849 kt != NL80211_KEYTYPE_PAIRWISE) 2850 return -EINVAL; 2851 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 2852 } 2853 2854 if (!rdev->ops->get_key) 2855 return -EOPNOTSUPP; 2856 2857 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2858 if (!msg) 2859 return -ENOMEM; 2860 2861 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 2862 NL80211_CMD_NEW_KEY); 2863 if (!hdr) 2864 goto nla_put_failure; 2865 2866 cookie.msg = msg; 2867 cookie.idx = key_idx; 2868 2869 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2870 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 2871 goto nla_put_failure; 2872 if (mac_addr && 2873 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 2874 goto nla_put_failure; 2875 2876 if (pairwise && mac_addr && 2877 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 2878 return -ENOENT; 2879 2880 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 2881 get_key_callback); 2882 2883 if (err) 2884 goto free_msg; 2885 2886 if (cookie.error) 2887 goto nla_put_failure; 2888 2889 genlmsg_end(msg, hdr); 2890 return genlmsg_reply(msg, info); 2891 2892 nla_put_failure: 2893 err = -ENOBUFS; 2894 free_msg: 2895 nlmsg_free(msg); 2896 return err; 2897 } 2898 2899 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 2900 { 2901 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2902 struct key_parse key; 2903 int err; 2904 struct net_device *dev = info->user_ptr[1]; 2905 2906 err = nl80211_parse_key(info, &key); 2907 if (err) 2908 return err; 2909 2910 if (key.idx < 0) 2911 return -EINVAL; 2912 2913 /* only support setting default key */ 2914 if (!key.def && !key.defmgmt) 2915 return -EINVAL; 2916 2917 wdev_lock(dev->ieee80211_ptr); 2918 2919 if (key.def) { 2920 if (!rdev->ops->set_default_key) { 2921 err = -EOPNOTSUPP; 2922 goto out; 2923 } 2924 2925 err = nl80211_key_allowed(dev->ieee80211_ptr); 2926 if (err) 2927 goto out; 2928 2929 err = rdev_set_default_key(rdev, dev, key.idx, 2930 key.def_uni, key.def_multi); 2931 2932 if (err) 2933 goto out; 2934 2935 #ifdef CONFIG_CFG80211_WEXT 2936 dev->ieee80211_ptr->wext.default_key = key.idx; 2937 #endif 2938 } else { 2939 if (key.def_uni || !key.def_multi) { 2940 err = -EINVAL; 2941 goto out; 2942 } 2943 2944 if (!rdev->ops->set_default_mgmt_key) { 2945 err = -EOPNOTSUPP; 2946 goto out; 2947 } 2948 2949 err = nl80211_key_allowed(dev->ieee80211_ptr); 2950 if (err) 2951 goto out; 2952 2953 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 2954 if (err) 2955 goto out; 2956 2957 #ifdef CONFIG_CFG80211_WEXT 2958 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 2959 #endif 2960 } 2961 2962 out: 2963 wdev_unlock(dev->ieee80211_ptr); 2964 2965 return err; 2966 } 2967 2968 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 2969 { 2970 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2971 int err; 2972 struct net_device *dev = info->user_ptr[1]; 2973 struct key_parse key; 2974 const u8 *mac_addr = NULL; 2975 2976 err = nl80211_parse_key(info, &key); 2977 if (err) 2978 return err; 2979 2980 if (!key.p.key) 2981 return -EINVAL; 2982 2983 if (info->attrs[NL80211_ATTR_MAC]) 2984 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2985 2986 if (key.type == -1) { 2987 if (mac_addr) 2988 key.type = NL80211_KEYTYPE_PAIRWISE; 2989 else 2990 key.type = NL80211_KEYTYPE_GROUP; 2991 } 2992 2993 /* for now */ 2994 if (key.type != NL80211_KEYTYPE_PAIRWISE && 2995 key.type != NL80211_KEYTYPE_GROUP) 2996 return -EINVAL; 2997 2998 if (!rdev->ops->add_key) 2999 return -EOPNOTSUPP; 3000 3001 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3002 key.type == NL80211_KEYTYPE_PAIRWISE, 3003 mac_addr)) 3004 return -EINVAL; 3005 3006 wdev_lock(dev->ieee80211_ptr); 3007 err = nl80211_key_allowed(dev->ieee80211_ptr); 3008 if (!err) 3009 err = rdev_add_key(rdev, dev, key.idx, 3010 key.type == NL80211_KEYTYPE_PAIRWISE, 3011 mac_addr, &key.p); 3012 wdev_unlock(dev->ieee80211_ptr); 3013 3014 return err; 3015 } 3016 3017 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3018 { 3019 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3020 int err; 3021 struct net_device *dev = info->user_ptr[1]; 3022 u8 *mac_addr = NULL; 3023 struct key_parse key; 3024 3025 err = nl80211_parse_key(info, &key); 3026 if (err) 3027 return err; 3028 3029 if (info->attrs[NL80211_ATTR_MAC]) 3030 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3031 3032 if (key.type == -1) { 3033 if (mac_addr) 3034 key.type = NL80211_KEYTYPE_PAIRWISE; 3035 else 3036 key.type = NL80211_KEYTYPE_GROUP; 3037 } 3038 3039 /* for now */ 3040 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3041 key.type != NL80211_KEYTYPE_GROUP) 3042 return -EINVAL; 3043 3044 if (!rdev->ops->del_key) 3045 return -EOPNOTSUPP; 3046 3047 wdev_lock(dev->ieee80211_ptr); 3048 err = nl80211_key_allowed(dev->ieee80211_ptr); 3049 3050 if (key.type == NL80211_KEYTYPE_PAIRWISE && mac_addr && 3051 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3052 err = -ENOENT; 3053 3054 if (!err) 3055 err = rdev_del_key(rdev, dev, key.idx, 3056 key.type == NL80211_KEYTYPE_PAIRWISE, 3057 mac_addr); 3058 3059 #ifdef CONFIG_CFG80211_WEXT 3060 if (!err) { 3061 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3062 dev->ieee80211_ptr->wext.default_key = -1; 3063 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3064 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3065 } 3066 #endif 3067 wdev_unlock(dev->ieee80211_ptr); 3068 3069 return err; 3070 } 3071 3072 /* This function returns an error or the number of nested attributes */ 3073 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3074 { 3075 struct nlattr *attr; 3076 int n_entries = 0, tmp; 3077 3078 nla_for_each_nested(attr, nl_attr, tmp) { 3079 if (nla_len(attr) != ETH_ALEN) 3080 return -EINVAL; 3081 3082 n_entries++; 3083 } 3084 3085 return n_entries; 3086 } 3087 3088 /* 3089 * This function parses ACL information and allocates memory for ACL data. 3090 * On successful return, the calling function is responsible to free the 3091 * ACL buffer returned by this function. 3092 */ 3093 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3094 struct genl_info *info) 3095 { 3096 enum nl80211_acl_policy acl_policy; 3097 struct nlattr *attr; 3098 struct cfg80211_acl_data *acl; 3099 int i = 0, n_entries, tmp; 3100 3101 if (!wiphy->max_acl_mac_addrs) 3102 return ERR_PTR(-EOPNOTSUPP); 3103 3104 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3105 return ERR_PTR(-EINVAL); 3106 3107 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3108 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3109 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3110 return ERR_PTR(-EINVAL); 3111 3112 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3113 return ERR_PTR(-EINVAL); 3114 3115 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3116 if (n_entries < 0) 3117 return ERR_PTR(n_entries); 3118 3119 if (n_entries > wiphy->max_acl_mac_addrs) 3120 return ERR_PTR(-ENOTSUPP); 3121 3122 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3123 GFP_KERNEL); 3124 if (!acl) 3125 return ERR_PTR(-ENOMEM); 3126 3127 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3128 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3129 i++; 3130 } 3131 3132 acl->n_acl_entries = n_entries; 3133 acl->acl_policy = acl_policy; 3134 3135 return acl; 3136 } 3137 3138 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3139 { 3140 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3141 struct net_device *dev = info->user_ptr[1]; 3142 struct cfg80211_acl_data *acl; 3143 int err; 3144 3145 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3146 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3147 return -EOPNOTSUPP; 3148 3149 if (!dev->ieee80211_ptr->beacon_interval) 3150 return -EINVAL; 3151 3152 acl = parse_acl_data(&rdev->wiphy, info); 3153 if (IS_ERR(acl)) 3154 return PTR_ERR(acl); 3155 3156 err = rdev_set_mac_acl(rdev, dev, acl); 3157 3158 kfree(acl); 3159 3160 return err; 3161 } 3162 3163 static int nl80211_parse_beacon(struct nlattr *attrs[], 3164 struct cfg80211_beacon_data *bcn) 3165 { 3166 bool haveinfo = false; 3167 3168 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3169 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3170 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3171 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3172 return -EINVAL; 3173 3174 memset(bcn, 0, sizeof(*bcn)); 3175 3176 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3177 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3178 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3179 if (!bcn->head_len) 3180 return -EINVAL; 3181 haveinfo = true; 3182 } 3183 3184 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3185 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3186 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3187 haveinfo = true; 3188 } 3189 3190 if (!haveinfo) 3191 return -EINVAL; 3192 3193 if (attrs[NL80211_ATTR_IE]) { 3194 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3195 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3196 } 3197 3198 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3199 bcn->proberesp_ies = 3200 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3201 bcn->proberesp_ies_len = 3202 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3203 } 3204 3205 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3206 bcn->assocresp_ies = 3207 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3208 bcn->assocresp_ies_len = 3209 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3210 } 3211 3212 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3213 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3214 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3215 } 3216 3217 return 0; 3218 } 3219 3220 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3221 struct cfg80211_ap_settings *params) 3222 { 3223 struct wireless_dev *wdev; 3224 bool ret = false; 3225 3226 list_for_each_entry(wdev, &rdev->wdev_list, list) { 3227 if (wdev->iftype != NL80211_IFTYPE_AP && 3228 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3229 continue; 3230 3231 if (!wdev->preset_chandef.chan) 3232 continue; 3233 3234 params->chandef = wdev->preset_chandef; 3235 ret = true; 3236 break; 3237 } 3238 3239 return ret; 3240 } 3241 3242 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3243 enum nl80211_auth_type auth_type, 3244 enum nl80211_commands cmd) 3245 { 3246 if (auth_type > NL80211_AUTHTYPE_MAX) 3247 return false; 3248 3249 switch (cmd) { 3250 case NL80211_CMD_AUTHENTICATE: 3251 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3252 auth_type == NL80211_AUTHTYPE_SAE) 3253 return false; 3254 return true; 3255 case NL80211_CMD_CONNECT: 3256 case NL80211_CMD_START_AP: 3257 /* SAE not supported yet */ 3258 if (auth_type == NL80211_AUTHTYPE_SAE) 3259 return false; 3260 return true; 3261 default: 3262 return false; 3263 } 3264 } 3265 3266 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3267 { 3268 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3269 struct net_device *dev = info->user_ptr[1]; 3270 struct wireless_dev *wdev = dev->ieee80211_ptr; 3271 struct cfg80211_ap_settings params; 3272 int err; 3273 3274 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3275 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3276 return -EOPNOTSUPP; 3277 3278 if (!rdev->ops->start_ap) 3279 return -EOPNOTSUPP; 3280 3281 if (wdev->beacon_interval) 3282 return -EALREADY; 3283 3284 memset(¶ms, 0, sizeof(params)); 3285 3286 /* these are required for START_AP */ 3287 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3288 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3289 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3290 return -EINVAL; 3291 3292 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3293 if (err) 3294 return err; 3295 3296 params.beacon_interval = 3297 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3298 params.dtim_period = 3299 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3300 3301 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3302 if (err) 3303 return err; 3304 3305 /* 3306 * In theory, some of these attributes should be required here 3307 * but since they were not used when the command was originally 3308 * added, keep them optional for old user space programs to let 3309 * them continue to work with drivers that do not need the 3310 * additional information -- drivers must check! 3311 */ 3312 if (info->attrs[NL80211_ATTR_SSID]) { 3313 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3314 params.ssid_len = 3315 nla_len(info->attrs[NL80211_ATTR_SSID]); 3316 if (params.ssid_len == 0 || 3317 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3318 return -EINVAL; 3319 } 3320 3321 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3322 params.hidden_ssid = nla_get_u32( 3323 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3324 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3325 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3326 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3327 return -EINVAL; 3328 } 3329 3330 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3331 3332 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3333 params.auth_type = nla_get_u32( 3334 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3335 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3336 NL80211_CMD_START_AP)) 3337 return -EINVAL; 3338 } else 3339 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3340 3341 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3342 NL80211_MAX_NR_CIPHER_SUITES); 3343 if (err) 3344 return err; 3345 3346 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3347 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3348 return -EOPNOTSUPP; 3349 params.inactivity_timeout = nla_get_u16( 3350 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3351 } 3352 3353 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3354 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3355 return -EINVAL; 3356 params.p2p_ctwindow = 3357 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3358 if (params.p2p_ctwindow > 127) 3359 return -EINVAL; 3360 if (params.p2p_ctwindow != 0 && 3361 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3362 return -EINVAL; 3363 } 3364 3365 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3366 u8 tmp; 3367 3368 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3369 return -EINVAL; 3370 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3371 if (tmp > 1) 3372 return -EINVAL; 3373 params.p2p_opp_ps = tmp; 3374 if (params.p2p_opp_ps != 0 && 3375 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3376 return -EINVAL; 3377 } 3378 3379 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3380 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3381 if (err) 3382 return err; 3383 } else if (wdev->preset_chandef.chan) { 3384 params.chandef = wdev->preset_chandef; 3385 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3386 return -EINVAL; 3387 3388 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 3389 wdev->iftype)) 3390 return -EINVAL; 3391 3392 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3393 params.acl = parse_acl_data(&rdev->wiphy, info); 3394 if (IS_ERR(params.acl)) 3395 return PTR_ERR(params.acl); 3396 } 3397 3398 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3399 params.smps_mode = 3400 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3401 switch (params.smps_mode) { 3402 case NL80211_SMPS_OFF: 3403 break; 3404 case NL80211_SMPS_STATIC: 3405 if (!(rdev->wiphy.features & 3406 NL80211_FEATURE_STATIC_SMPS)) 3407 return -EINVAL; 3408 break; 3409 case NL80211_SMPS_DYNAMIC: 3410 if (!(rdev->wiphy.features & 3411 NL80211_FEATURE_DYNAMIC_SMPS)) 3412 return -EINVAL; 3413 break; 3414 default: 3415 return -EINVAL; 3416 } 3417 } else { 3418 params.smps_mode = NL80211_SMPS_OFF; 3419 } 3420 3421 wdev_lock(wdev); 3422 err = rdev_start_ap(rdev, dev, ¶ms); 3423 if (!err) { 3424 wdev->preset_chandef = params.chandef; 3425 wdev->beacon_interval = params.beacon_interval; 3426 wdev->chandef = params.chandef; 3427 wdev->ssid_len = params.ssid_len; 3428 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3429 } 3430 wdev_unlock(wdev); 3431 3432 kfree(params.acl); 3433 3434 return err; 3435 } 3436 3437 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3438 { 3439 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3440 struct net_device *dev = info->user_ptr[1]; 3441 struct wireless_dev *wdev = dev->ieee80211_ptr; 3442 struct cfg80211_beacon_data params; 3443 int err; 3444 3445 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3446 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3447 return -EOPNOTSUPP; 3448 3449 if (!rdev->ops->change_beacon) 3450 return -EOPNOTSUPP; 3451 3452 if (!wdev->beacon_interval) 3453 return -EINVAL; 3454 3455 err = nl80211_parse_beacon(info->attrs, ¶ms); 3456 if (err) 3457 return err; 3458 3459 wdev_lock(wdev); 3460 err = rdev_change_beacon(rdev, dev, ¶ms); 3461 wdev_unlock(wdev); 3462 3463 return err; 3464 } 3465 3466 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3467 { 3468 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3469 struct net_device *dev = info->user_ptr[1]; 3470 3471 return cfg80211_stop_ap(rdev, dev, false); 3472 } 3473 3474 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3475 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3476 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3477 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3478 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3479 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3480 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3481 }; 3482 3483 static int parse_station_flags(struct genl_info *info, 3484 enum nl80211_iftype iftype, 3485 struct station_parameters *params) 3486 { 3487 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3488 struct nlattr *nla; 3489 int flag; 3490 3491 /* 3492 * Try parsing the new attribute first so userspace 3493 * can specify both for older kernels. 3494 */ 3495 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3496 if (nla) { 3497 struct nl80211_sta_flag_update *sta_flags; 3498 3499 sta_flags = nla_data(nla); 3500 params->sta_flags_mask = sta_flags->mask; 3501 params->sta_flags_set = sta_flags->set; 3502 params->sta_flags_set &= params->sta_flags_mask; 3503 if ((params->sta_flags_mask | 3504 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3505 return -EINVAL; 3506 return 0; 3507 } 3508 3509 /* if present, parse the old attribute */ 3510 3511 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3512 if (!nla) 3513 return 0; 3514 3515 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3516 nla, sta_flags_policy)) 3517 return -EINVAL; 3518 3519 /* 3520 * Only allow certain flags for interface types so that 3521 * other attributes are silently ignored. Remember that 3522 * this is backward compatibility code with old userspace 3523 * and shouldn't be hit in other cases anyway. 3524 */ 3525 switch (iftype) { 3526 case NL80211_IFTYPE_AP: 3527 case NL80211_IFTYPE_AP_VLAN: 3528 case NL80211_IFTYPE_P2P_GO: 3529 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3530 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3531 BIT(NL80211_STA_FLAG_WME) | 3532 BIT(NL80211_STA_FLAG_MFP); 3533 break; 3534 case NL80211_IFTYPE_P2P_CLIENT: 3535 case NL80211_IFTYPE_STATION: 3536 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3537 BIT(NL80211_STA_FLAG_TDLS_PEER); 3538 break; 3539 case NL80211_IFTYPE_MESH_POINT: 3540 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3541 BIT(NL80211_STA_FLAG_MFP) | 3542 BIT(NL80211_STA_FLAG_AUTHORIZED); 3543 default: 3544 return -EINVAL; 3545 } 3546 3547 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3548 if (flags[flag]) { 3549 params->sta_flags_set |= (1<<flag); 3550 3551 /* no longer support new API additions in old API */ 3552 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3553 return -EINVAL; 3554 } 3555 } 3556 3557 return 0; 3558 } 3559 3560 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3561 int attr) 3562 { 3563 struct nlattr *rate; 3564 u32 bitrate; 3565 u16 bitrate_compat; 3566 3567 rate = nla_nest_start(msg, attr); 3568 if (!rate) 3569 return false; 3570 3571 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3572 bitrate = cfg80211_calculate_bitrate(info); 3573 /* report 16-bit bitrate only if we can */ 3574 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3575 if (bitrate > 0 && 3576 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3577 return false; 3578 if (bitrate_compat > 0 && 3579 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3580 return false; 3581 3582 if (info->flags & RATE_INFO_FLAGS_MCS) { 3583 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3584 return false; 3585 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3586 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3587 return false; 3588 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3589 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3590 return false; 3591 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3592 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3593 return false; 3594 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3595 return false; 3596 if (info->flags & RATE_INFO_FLAGS_40_MHZ_WIDTH && 3597 nla_put_flag(msg, NL80211_RATE_INFO_40_MHZ_WIDTH)) 3598 return false; 3599 if (info->flags & RATE_INFO_FLAGS_80_MHZ_WIDTH && 3600 nla_put_flag(msg, NL80211_RATE_INFO_80_MHZ_WIDTH)) 3601 return false; 3602 if (info->flags & RATE_INFO_FLAGS_80P80_MHZ_WIDTH && 3603 nla_put_flag(msg, NL80211_RATE_INFO_80P80_MHZ_WIDTH)) 3604 return false; 3605 if (info->flags & RATE_INFO_FLAGS_160_MHZ_WIDTH && 3606 nla_put_flag(msg, NL80211_RATE_INFO_160_MHZ_WIDTH)) 3607 return false; 3608 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3609 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3610 return false; 3611 } 3612 3613 nla_nest_end(msg, rate); 3614 return true; 3615 } 3616 3617 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3618 int id) 3619 { 3620 void *attr; 3621 int i = 0; 3622 3623 if (!mask) 3624 return true; 3625 3626 attr = nla_nest_start(msg, id); 3627 if (!attr) 3628 return false; 3629 3630 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3631 if (!(mask & BIT(i))) 3632 continue; 3633 3634 if (nla_put_u8(msg, i, signal[i])) 3635 return false; 3636 } 3637 3638 nla_nest_end(msg, attr); 3639 3640 return true; 3641 } 3642 3643 static int nl80211_send_station(struct sk_buff *msg, u32 portid, u32 seq, 3644 int flags, 3645 struct cfg80211_registered_device *rdev, 3646 struct net_device *dev, 3647 const u8 *mac_addr, struct station_info *sinfo) 3648 { 3649 void *hdr; 3650 struct nlattr *sinfoattr, *bss_param; 3651 3652 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_STATION); 3653 if (!hdr) 3654 return -1; 3655 3656 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3657 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3658 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3659 goto nla_put_failure; 3660 3661 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3662 if (!sinfoattr) 3663 goto nla_put_failure; 3664 if ((sinfo->filled & STATION_INFO_CONNECTED_TIME) && 3665 nla_put_u32(msg, NL80211_STA_INFO_CONNECTED_TIME, 3666 sinfo->connected_time)) 3667 goto nla_put_failure; 3668 if ((sinfo->filled & STATION_INFO_INACTIVE_TIME) && 3669 nla_put_u32(msg, NL80211_STA_INFO_INACTIVE_TIME, 3670 sinfo->inactive_time)) 3671 goto nla_put_failure; 3672 if ((sinfo->filled & (STATION_INFO_RX_BYTES | 3673 STATION_INFO_RX_BYTES64)) && 3674 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3675 (u32)sinfo->rx_bytes)) 3676 goto nla_put_failure; 3677 if ((sinfo->filled & (STATION_INFO_TX_BYTES | 3678 STATION_INFO_TX_BYTES64)) && 3679 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3680 (u32)sinfo->tx_bytes)) 3681 goto nla_put_failure; 3682 if ((sinfo->filled & STATION_INFO_RX_BYTES64) && 3683 nla_put_u64(msg, NL80211_STA_INFO_RX_BYTES64, 3684 sinfo->rx_bytes)) 3685 goto nla_put_failure; 3686 if ((sinfo->filled & STATION_INFO_TX_BYTES64) && 3687 nla_put_u64(msg, NL80211_STA_INFO_TX_BYTES64, 3688 sinfo->tx_bytes)) 3689 goto nla_put_failure; 3690 if ((sinfo->filled & STATION_INFO_LLID) && 3691 nla_put_u16(msg, NL80211_STA_INFO_LLID, sinfo->llid)) 3692 goto nla_put_failure; 3693 if ((sinfo->filled & STATION_INFO_PLID) && 3694 nla_put_u16(msg, NL80211_STA_INFO_PLID, sinfo->plid)) 3695 goto nla_put_failure; 3696 if ((sinfo->filled & STATION_INFO_PLINK_STATE) && 3697 nla_put_u8(msg, NL80211_STA_INFO_PLINK_STATE, 3698 sinfo->plink_state)) 3699 goto nla_put_failure; 3700 switch (rdev->wiphy.signal_type) { 3701 case CFG80211_SIGNAL_TYPE_MBM: 3702 if ((sinfo->filled & STATION_INFO_SIGNAL) && 3703 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL, 3704 sinfo->signal)) 3705 goto nla_put_failure; 3706 if ((sinfo->filled & STATION_INFO_SIGNAL_AVG) && 3707 nla_put_u8(msg, NL80211_STA_INFO_SIGNAL_AVG, 3708 sinfo->signal_avg)) 3709 goto nla_put_failure; 3710 break; 3711 default: 3712 break; 3713 } 3714 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL) { 3715 if (!nl80211_put_signal(msg, sinfo->chains, 3716 sinfo->chain_signal, 3717 NL80211_STA_INFO_CHAIN_SIGNAL)) 3718 goto nla_put_failure; 3719 } 3720 if (sinfo->filled & STATION_INFO_CHAIN_SIGNAL_AVG) { 3721 if (!nl80211_put_signal(msg, sinfo->chains, 3722 sinfo->chain_signal_avg, 3723 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3724 goto nla_put_failure; 3725 } 3726 if (sinfo->filled & STATION_INFO_TX_BITRATE) { 3727 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3728 NL80211_STA_INFO_TX_BITRATE)) 3729 goto nla_put_failure; 3730 } 3731 if (sinfo->filled & STATION_INFO_RX_BITRATE) { 3732 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3733 NL80211_STA_INFO_RX_BITRATE)) 3734 goto nla_put_failure; 3735 } 3736 if ((sinfo->filled & STATION_INFO_RX_PACKETS) && 3737 nla_put_u32(msg, NL80211_STA_INFO_RX_PACKETS, 3738 sinfo->rx_packets)) 3739 goto nla_put_failure; 3740 if ((sinfo->filled & STATION_INFO_TX_PACKETS) && 3741 nla_put_u32(msg, NL80211_STA_INFO_TX_PACKETS, 3742 sinfo->tx_packets)) 3743 goto nla_put_failure; 3744 if ((sinfo->filled & STATION_INFO_TX_RETRIES) && 3745 nla_put_u32(msg, NL80211_STA_INFO_TX_RETRIES, 3746 sinfo->tx_retries)) 3747 goto nla_put_failure; 3748 if ((sinfo->filled & STATION_INFO_TX_FAILED) && 3749 nla_put_u32(msg, NL80211_STA_INFO_TX_FAILED, 3750 sinfo->tx_failed)) 3751 goto nla_put_failure; 3752 if ((sinfo->filled & STATION_INFO_EXPECTED_THROUGHPUT) && 3753 nla_put_u32(msg, NL80211_STA_INFO_EXPECTED_THROUGHPUT, 3754 sinfo->expected_throughput)) 3755 goto nla_put_failure; 3756 if ((sinfo->filled & STATION_INFO_BEACON_LOSS_COUNT) && 3757 nla_put_u32(msg, NL80211_STA_INFO_BEACON_LOSS, 3758 sinfo->beacon_loss_count)) 3759 goto nla_put_failure; 3760 if ((sinfo->filled & STATION_INFO_LOCAL_PM) && 3761 nla_put_u32(msg, NL80211_STA_INFO_LOCAL_PM, 3762 sinfo->local_pm)) 3763 goto nla_put_failure; 3764 if ((sinfo->filled & STATION_INFO_PEER_PM) && 3765 nla_put_u32(msg, NL80211_STA_INFO_PEER_PM, 3766 sinfo->peer_pm)) 3767 goto nla_put_failure; 3768 if ((sinfo->filled & STATION_INFO_NONPEER_PM) && 3769 nla_put_u32(msg, NL80211_STA_INFO_NONPEER_PM, 3770 sinfo->nonpeer_pm)) 3771 goto nla_put_failure; 3772 if (sinfo->filled & STATION_INFO_BSS_PARAM) { 3773 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3774 if (!bss_param) 3775 goto nla_put_failure; 3776 3777 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3778 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3779 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3780 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3781 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3782 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3783 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3784 sinfo->bss_param.dtim_period) || 3785 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3786 sinfo->bss_param.beacon_interval)) 3787 goto nla_put_failure; 3788 3789 nla_nest_end(msg, bss_param); 3790 } 3791 if ((sinfo->filled & STATION_INFO_STA_FLAGS) && 3792 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3793 sizeof(struct nl80211_sta_flag_update), 3794 &sinfo->sta_flags)) 3795 goto nla_put_failure; 3796 if ((sinfo->filled & STATION_INFO_T_OFFSET) && 3797 nla_put_u64(msg, NL80211_STA_INFO_T_OFFSET, 3798 sinfo->t_offset)) 3799 goto nla_put_failure; 3800 nla_nest_end(msg, sinfoattr); 3801 3802 if ((sinfo->filled & STATION_INFO_ASSOC_REQ_IES) && 3803 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3804 sinfo->assoc_req_ies)) 3805 goto nla_put_failure; 3806 3807 return genlmsg_end(msg, hdr); 3808 3809 nla_put_failure: 3810 genlmsg_cancel(msg, hdr); 3811 return -EMSGSIZE; 3812 } 3813 3814 static int nl80211_dump_station(struct sk_buff *skb, 3815 struct netlink_callback *cb) 3816 { 3817 struct station_info sinfo; 3818 struct cfg80211_registered_device *rdev; 3819 struct wireless_dev *wdev; 3820 u8 mac_addr[ETH_ALEN]; 3821 int sta_idx = cb->args[2]; 3822 int err; 3823 3824 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 3825 if (err) 3826 return err; 3827 3828 if (!wdev->netdev) { 3829 err = -EINVAL; 3830 goto out_err; 3831 } 3832 3833 if (!rdev->ops->dump_station) { 3834 err = -EOPNOTSUPP; 3835 goto out_err; 3836 } 3837 3838 while (1) { 3839 memset(&sinfo, 0, sizeof(sinfo)); 3840 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 3841 mac_addr, &sinfo); 3842 if (err == -ENOENT) 3843 break; 3844 if (err) 3845 goto out_err; 3846 3847 if (nl80211_send_station(skb, 3848 NETLINK_CB(cb->skb).portid, 3849 cb->nlh->nlmsg_seq, NLM_F_MULTI, 3850 rdev, wdev->netdev, mac_addr, 3851 &sinfo) < 0) 3852 goto out; 3853 3854 sta_idx++; 3855 } 3856 3857 3858 out: 3859 cb->args[2] = sta_idx; 3860 err = skb->len; 3861 out_err: 3862 nl80211_finish_wdev_dump(rdev); 3863 3864 return err; 3865 } 3866 3867 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 3868 { 3869 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3870 struct net_device *dev = info->user_ptr[1]; 3871 struct station_info sinfo; 3872 struct sk_buff *msg; 3873 u8 *mac_addr = NULL; 3874 int err; 3875 3876 memset(&sinfo, 0, sizeof(sinfo)); 3877 3878 if (!info->attrs[NL80211_ATTR_MAC]) 3879 return -EINVAL; 3880 3881 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3882 3883 if (!rdev->ops->get_station) 3884 return -EOPNOTSUPP; 3885 3886 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 3887 if (err) 3888 return err; 3889 3890 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3891 if (!msg) 3892 return -ENOMEM; 3893 3894 if (nl80211_send_station(msg, info->snd_portid, info->snd_seq, 0, 3895 rdev, dev, mac_addr, &sinfo) < 0) { 3896 nlmsg_free(msg); 3897 return -ENOBUFS; 3898 } 3899 3900 return genlmsg_reply(msg, info); 3901 } 3902 3903 int cfg80211_check_station_change(struct wiphy *wiphy, 3904 struct station_parameters *params, 3905 enum cfg80211_station_type statype) 3906 { 3907 if (params->listen_interval != -1) 3908 return -EINVAL; 3909 if (params->aid && 3910 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3911 return -EINVAL; 3912 3913 /* When you run into this, adjust the code below for the new flag */ 3914 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 3915 3916 switch (statype) { 3917 case CFG80211_STA_MESH_PEER_KERNEL: 3918 case CFG80211_STA_MESH_PEER_USER: 3919 /* 3920 * No ignoring the TDLS flag here -- the userspace mesh 3921 * code doesn't have the bug of including TDLS in the 3922 * mask everywhere. 3923 */ 3924 if (params->sta_flags_mask & 3925 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3926 BIT(NL80211_STA_FLAG_MFP) | 3927 BIT(NL80211_STA_FLAG_AUTHORIZED))) 3928 return -EINVAL; 3929 break; 3930 case CFG80211_STA_TDLS_PEER_SETUP: 3931 case CFG80211_STA_TDLS_PEER_ACTIVE: 3932 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 3933 return -EINVAL; 3934 /* ignore since it can't change */ 3935 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3936 break; 3937 default: 3938 /* disallow mesh-specific things */ 3939 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 3940 return -EINVAL; 3941 if (params->local_pm) 3942 return -EINVAL; 3943 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 3944 return -EINVAL; 3945 } 3946 3947 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 3948 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 3949 /* TDLS can't be set, ... */ 3950 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 3951 return -EINVAL; 3952 /* 3953 * ... but don't bother the driver with it. This works around 3954 * a hostapd/wpa_supplicant issue -- it always includes the 3955 * TLDS_PEER flag in the mask even for AP mode. 3956 */ 3957 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 3958 } 3959 3960 if (statype != CFG80211_STA_TDLS_PEER_SETUP) { 3961 /* reject other things that can't change */ 3962 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 3963 return -EINVAL; 3964 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 3965 return -EINVAL; 3966 if (params->supported_rates) 3967 return -EINVAL; 3968 if (params->ext_capab || params->ht_capa || params->vht_capa) 3969 return -EINVAL; 3970 } 3971 3972 if (statype != CFG80211_STA_AP_CLIENT) { 3973 if (params->vlan) 3974 return -EINVAL; 3975 } 3976 3977 switch (statype) { 3978 case CFG80211_STA_AP_MLME_CLIENT: 3979 /* Use this only for authorizing/unauthorizing a station */ 3980 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 3981 return -EOPNOTSUPP; 3982 break; 3983 case CFG80211_STA_AP_CLIENT: 3984 /* accept only the listed bits */ 3985 if (params->sta_flags_mask & 3986 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 3987 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3988 BIT(NL80211_STA_FLAG_ASSOCIATED) | 3989 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3990 BIT(NL80211_STA_FLAG_WME) | 3991 BIT(NL80211_STA_FLAG_MFP))) 3992 return -EINVAL; 3993 3994 /* but authenticated/associated only if driver handles it */ 3995 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 3996 params->sta_flags_mask & 3997 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3998 BIT(NL80211_STA_FLAG_ASSOCIATED))) 3999 return -EINVAL; 4000 break; 4001 case CFG80211_STA_IBSS: 4002 case CFG80211_STA_AP_STA: 4003 /* reject any changes other than AUTHORIZED */ 4004 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4005 return -EINVAL; 4006 break; 4007 case CFG80211_STA_TDLS_PEER_SETUP: 4008 /* reject any changes other than AUTHORIZED or WME */ 4009 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4010 BIT(NL80211_STA_FLAG_WME))) 4011 return -EINVAL; 4012 /* force (at least) rates when authorizing */ 4013 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4014 !params->supported_rates) 4015 return -EINVAL; 4016 break; 4017 case CFG80211_STA_TDLS_PEER_ACTIVE: 4018 /* reject any changes */ 4019 return -EINVAL; 4020 case CFG80211_STA_MESH_PEER_KERNEL: 4021 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4022 return -EINVAL; 4023 break; 4024 case CFG80211_STA_MESH_PEER_USER: 4025 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4026 return -EINVAL; 4027 break; 4028 } 4029 4030 return 0; 4031 } 4032 EXPORT_SYMBOL(cfg80211_check_station_change); 4033 4034 /* 4035 * Get vlan interface making sure it is running and on the right wiphy. 4036 */ 4037 static struct net_device *get_vlan(struct genl_info *info, 4038 struct cfg80211_registered_device *rdev) 4039 { 4040 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4041 struct net_device *v; 4042 int ret; 4043 4044 if (!vlanattr) 4045 return NULL; 4046 4047 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4048 if (!v) 4049 return ERR_PTR(-ENODEV); 4050 4051 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4052 ret = -EINVAL; 4053 goto error; 4054 } 4055 4056 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4057 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4058 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4059 ret = -EINVAL; 4060 goto error; 4061 } 4062 4063 if (!netif_running(v)) { 4064 ret = -ENETDOWN; 4065 goto error; 4066 } 4067 4068 return v; 4069 error: 4070 dev_put(v); 4071 return ERR_PTR(ret); 4072 } 4073 4074 static const struct nla_policy 4075 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4076 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4077 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4078 }; 4079 4080 static int nl80211_parse_sta_wme(struct genl_info *info, 4081 struct station_parameters *params) 4082 { 4083 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4084 struct nlattr *nla; 4085 int err; 4086 4087 /* parse WME attributes if present */ 4088 if (!info->attrs[NL80211_ATTR_STA_WME]) 4089 return 0; 4090 4091 nla = info->attrs[NL80211_ATTR_STA_WME]; 4092 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4093 nl80211_sta_wme_policy); 4094 if (err) 4095 return err; 4096 4097 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4098 params->uapsd_queues = nla_get_u8( 4099 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4100 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4101 return -EINVAL; 4102 4103 if (tb[NL80211_STA_WME_MAX_SP]) 4104 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4105 4106 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4107 return -EINVAL; 4108 4109 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4110 4111 return 0; 4112 } 4113 4114 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4115 struct station_parameters *params) 4116 { 4117 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4118 params->supported_channels = 4119 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4120 params->supported_channels_len = 4121 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4122 /* 4123 * Need to include at least one (first channel, number of 4124 * channels) tuple for each subband, and must have proper 4125 * tuples for the rest of the data as well. 4126 */ 4127 if (params->supported_channels_len < 2) 4128 return -EINVAL; 4129 if (params->supported_channels_len % 2) 4130 return -EINVAL; 4131 } 4132 4133 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4134 params->supported_oper_classes = 4135 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4136 params->supported_oper_classes_len = 4137 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4138 /* 4139 * The value of the Length field of the Supported Operating 4140 * Classes element is between 2 and 253. 4141 */ 4142 if (params->supported_oper_classes_len < 2 || 4143 params->supported_oper_classes_len > 253) 4144 return -EINVAL; 4145 } 4146 return 0; 4147 } 4148 4149 static int nl80211_set_station_tdls(struct genl_info *info, 4150 struct station_parameters *params) 4151 { 4152 int err; 4153 /* Dummy STA entry gets updated once the peer capabilities are known */ 4154 if (info->attrs[NL80211_ATTR_PEER_AID]) 4155 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4156 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4157 params->ht_capa = 4158 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4159 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4160 params->vht_capa = 4161 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4162 4163 err = nl80211_parse_sta_channel_info(info, params); 4164 if (err) 4165 return err; 4166 4167 return nl80211_parse_sta_wme(info, params); 4168 } 4169 4170 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4171 { 4172 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4173 struct net_device *dev = info->user_ptr[1]; 4174 struct station_parameters params; 4175 u8 *mac_addr; 4176 int err; 4177 4178 memset(¶ms, 0, sizeof(params)); 4179 4180 params.listen_interval = -1; 4181 4182 if (!rdev->ops->change_station) 4183 return -EOPNOTSUPP; 4184 4185 if (info->attrs[NL80211_ATTR_STA_AID]) 4186 return -EINVAL; 4187 4188 if (!info->attrs[NL80211_ATTR_MAC]) 4189 return -EINVAL; 4190 4191 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4192 4193 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4194 params.supported_rates = 4195 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4196 params.supported_rates_len = 4197 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4198 } 4199 4200 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4201 params.capability = 4202 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4203 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4204 } 4205 4206 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4207 params.ext_capab = 4208 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4209 params.ext_capab_len = 4210 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4211 } 4212 4213 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4214 return -EINVAL; 4215 4216 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4217 return -EINVAL; 4218 4219 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4220 params.plink_action = 4221 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4222 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4223 return -EINVAL; 4224 } 4225 4226 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4227 params.plink_state = 4228 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4229 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4230 return -EINVAL; 4231 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4232 } 4233 4234 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4235 enum nl80211_mesh_power_mode pm = nla_get_u32( 4236 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4237 4238 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4239 pm > NL80211_MESH_POWER_MAX) 4240 return -EINVAL; 4241 4242 params.local_pm = pm; 4243 } 4244 4245 /* Include parameters for TDLS peer (will check later) */ 4246 err = nl80211_set_station_tdls(info, ¶ms); 4247 if (err) 4248 return err; 4249 4250 params.vlan = get_vlan(info, rdev); 4251 if (IS_ERR(params.vlan)) 4252 return PTR_ERR(params.vlan); 4253 4254 switch (dev->ieee80211_ptr->iftype) { 4255 case NL80211_IFTYPE_AP: 4256 case NL80211_IFTYPE_AP_VLAN: 4257 case NL80211_IFTYPE_P2P_GO: 4258 case NL80211_IFTYPE_P2P_CLIENT: 4259 case NL80211_IFTYPE_STATION: 4260 case NL80211_IFTYPE_ADHOC: 4261 case NL80211_IFTYPE_MESH_POINT: 4262 break; 4263 default: 4264 err = -EOPNOTSUPP; 4265 goto out_put_vlan; 4266 } 4267 4268 /* driver will call cfg80211_check_station_change() */ 4269 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4270 4271 out_put_vlan: 4272 if (params.vlan) 4273 dev_put(params.vlan); 4274 4275 return err; 4276 } 4277 4278 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4279 { 4280 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4281 int err; 4282 struct net_device *dev = info->user_ptr[1]; 4283 struct station_parameters params; 4284 u8 *mac_addr = NULL; 4285 4286 memset(¶ms, 0, sizeof(params)); 4287 4288 if (!rdev->ops->add_station) 4289 return -EOPNOTSUPP; 4290 4291 if (!info->attrs[NL80211_ATTR_MAC]) 4292 return -EINVAL; 4293 4294 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4295 return -EINVAL; 4296 4297 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4298 return -EINVAL; 4299 4300 if (!info->attrs[NL80211_ATTR_STA_AID] && 4301 !info->attrs[NL80211_ATTR_PEER_AID]) 4302 return -EINVAL; 4303 4304 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4305 params.supported_rates = 4306 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4307 params.supported_rates_len = 4308 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4309 params.listen_interval = 4310 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4311 4312 if (info->attrs[NL80211_ATTR_PEER_AID]) 4313 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4314 else 4315 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4316 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4317 return -EINVAL; 4318 4319 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4320 params.capability = 4321 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4322 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4323 } 4324 4325 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4326 params.ext_capab = 4327 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4328 params.ext_capab_len = 4329 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4330 } 4331 4332 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4333 params.ht_capa = 4334 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4335 4336 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4337 params.vht_capa = 4338 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4339 4340 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4341 params.opmode_notif_used = true; 4342 params.opmode_notif = 4343 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4344 } 4345 4346 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4347 params.plink_action = 4348 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4349 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4350 return -EINVAL; 4351 } 4352 4353 err = nl80211_parse_sta_channel_info(info, ¶ms); 4354 if (err) 4355 return err; 4356 4357 err = nl80211_parse_sta_wme(info, ¶ms); 4358 if (err) 4359 return err; 4360 4361 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4362 return -EINVAL; 4363 4364 /* When you run into this, adjust the code below for the new flag */ 4365 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4366 4367 switch (dev->ieee80211_ptr->iftype) { 4368 case NL80211_IFTYPE_AP: 4369 case NL80211_IFTYPE_AP_VLAN: 4370 case NL80211_IFTYPE_P2P_GO: 4371 /* ignore WME attributes if iface/sta is not capable */ 4372 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4373 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4374 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4375 4376 /* TDLS peers cannot be added */ 4377 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4378 info->attrs[NL80211_ATTR_PEER_AID]) 4379 return -EINVAL; 4380 /* but don't bother the driver with it */ 4381 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4382 4383 /* allow authenticated/associated only if driver handles it */ 4384 if (!(rdev->wiphy.features & 4385 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4386 params.sta_flags_mask & 4387 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4388 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4389 return -EINVAL; 4390 4391 /* must be last in here for error handling */ 4392 params.vlan = get_vlan(info, rdev); 4393 if (IS_ERR(params.vlan)) 4394 return PTR_ERR(params.vlan); 4395 break; 4396 case NL80211_IFTYPE_MESH_POINT: 4397 /* ignore uAPSD data */ 4398 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4399 4400 /* associated is disallowed */ 4401 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4402 return -EINVAL; 4403 /* TDLS peers cannot be added */ 4404 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4405 info->attrs[NL80211_ATTR_PEER_AID]) 4406 return -EINVAL; 4407 break; 4408 case NL80211_IFTYPE_STATION: 4409 case NL80211_IFTYPE_P2P_CLIENT: 4410 /* ignore uAPSD data */ 4411 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4412 4413 /* these are disallowed */ 4414 if (params.sta_flags_mask & 4415 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4416 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4417 return -EINVAL; 4418 /* Only TDLS peers can be added */ 4419 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4420 return -EINVAL; 4421 /* Can only add if TDLS ... */ 4422 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4423 return -EOPNOTSUPP; 4424 /* ... with external setup is supported */ 4425 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4426 return -EOPNOTSUPP; 4427 /* 4428 * Older wpa_supplicant versions always mark the TDLS peer 4429 * as authorized, but it shouldn't yet be. 4430 */ 4431 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4432 break; 4433 default: 4434 return -EOPNOTSUPP; 4435 } 4436 4437 /* be aware of params.vlan when changing code here */ 4438 4439 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4440 4441 if (params.vlan) 4442 dev_put(params.vlan); 4443 return err; 4444 } 4445 4446 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4447 { 4448 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4449 struct net_device *dev = info->user_ptr[1]; 4450 struct station_del_parameters params; 4451 4452 memset(¶ms, 0, sizeof(params)); 4453 4454 if (info->attrs[NL80211_ATTR_MAC]) 4455 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4456 4457 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4458 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4459 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4460 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4461 return -EINVAL; 4462 4463 if (!rdev->ops->del_station) 4464 return -EOPNOTSUPP; 4465 4466 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4467 params.subtype = 4468 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4469 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4470 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4471 return -EINVAL; 4472 } else { 4473 /* Default to Deauthentication frame */ 4474 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4475 } 4476 4477 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4478 params.reason_code = 4479 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4480 if (params.reason_code == 0) 4481 return -EINVAL; /* 0 is reserved */ 4482 } else { 4483 /* Default to reason code 2 */ 4484 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4485 } 4486 4487 return rdev_del_station(rdev, dev, ¶ms); 4488 } 4489 4490 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4491 int flags, struct net_device *dev, 4492 u8 *dst, u8 *next_hop, 4493 struct mpath_info *pinfo) 4494 { 4495 void *hdr; 4496 struct nlattr *pinfoattr; 4497 4498 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4499 if (!hdr) 4500 return -1; 4501 4502 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4503 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4504 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4505 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4506 goto nla_put_failure; 4507 4508 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4509 if (!pinfoattr) 4510 goto nla_put_failure; 4511 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4512 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4513 pinfo->frame_qlen)) 4514 goto nla_put_failure; 4515 if (((pinfo->filled & MPATH_INFO_SN) && 4516 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4517 ((pinfo->filled & MPATH_INFO_METRIC) && 4518 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4519 pinfo->metric)) || 4520 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4521 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4522 pinfo->exptime)) || 4523 ((pinfo->filled & MPATH_INFO_FLAGS) && 4524 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4525 pinfo->flags)) || 4526 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4527 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4528 pinfo->discovery_timeout)) || 4529 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4530 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4531 pinfo->discovery_retries))) 4532 goto nla_put_failure; 4533 4534 nla_nest_end(msg, pinfoattr); 4535 4536 return genlmsg_end(msg, hdr); 4537 4538 nla_put_failure: 4539 genlmsg_cancel(msg, hdr); 4540 return -EMSGSIZE; 4541 } 4542 4543 static int nl80211_dump_mpath(struct sk_buff *skb, 4544 struct netlink_callback *cb) 4545 { 4546 struct mpath_info pinfo; 4547 struct cfg80211_registered_device *rdev; 4548 struct wireless_dev *wdev; 4549 u8 dst[ETH_ALEN]; 4550 u8 next_hop[ETH_ALEN]; 4551 int path_idx = cb->args[2]; 4552 int err; 4553 4554 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4555 if (err) 4556 return err; 4557 4558 if (!rdev->ops->dump_mpath) { 4559 err = -EOPNOTSUPP; 4560 goto out_err; 4561 } 4562 4563 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4564 err = -EOPNOTSUPP; 4565 goto out_err; 4566 } 4567 4568 while (1) { 4569 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4570 next_hop, &pinfo); 4571 if (err == -ENOENT) 4572 break; 4573 if (err) 4574 goto out_err; 4575 4576 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4577 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4578 wdev->netdev, dst, next_hop, 4579 &pinfo) < 0) 4580 goto out; 4581 4582 path_idx++; 4583 } 4584 4585 4586 out: 4587 cb->args[2] = path_idx; 4588 err = skb->len; 4589 out_err: 4590 nl80211_finish_wdev_dump(rdev); 4591 return err; 4592 } 4593 4594 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4595 { 4596 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4597 int err; 4598 struct net_device *dev = info->user_ptr[1]; 4599 struct mpath_info pinfo; 4600 struct sk_buff *msg; 4601 u8 *dst = NULL; 4602 u8 next_hop[ETH_ALEN]; 4603 4604 memset(&pinfo, 0, sizeof(pinfo)); 4605 4606 if (!info->attrs[NL80211_ATTR_MAC]) 4607 return -EINVAL; 4608 4609 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4610 4611 if (!rdev->ops->get_mpath) 4612 return -EOPNOTSUPP; 4613 4614 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4615 return -EOPNOTSUPP; 4616 4617 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4618 if (err) 4619 return err; 4620 4621 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4622 if (!msg) 4623 return -ENOMEM; 4624 4625 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4626 dev, dst, next_hop, &pinfo) < 0) { 4627 nlmsg_free(msg); 4628 return -ENOBUFS; 4629 } 4630 4631 return genlmsg_reply(msg, info); 4632 } 4633 4634 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4635 { 4636 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4637 struct net_device *dev = info->user_ptr[1]; 4638 u8 *dst = NULL; 4639 u8 *next_hop = NULL; 4640 4641 if (!info->attrs[NL80211_ATTR_MAC]) 4642 return -EINVAL; 4643 4644 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4645 return -EINVAL; 4646 4647 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4648 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4649 4650 if (!rdev->ops->change_mpath) 4651 return -EOPNOTSUPP; 4652 4653 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4654 return -EOPNOTSUPP; 4655 4656 return rdev_change_mpath(rdev, dev, dst, next_hop); 4657 } 4658 4659 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4660 { 4661 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4662 struct net_device *dev = info->user_ptr[1]; 4663 u8 *dst = NULL; 4664 u8 *next_hop = NULL; 4665 4666 if (!info->attrs[NL80211_ATTR_MAC]) 4667 return -EINVAL; 4668 4669 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4670 return -EINVAL; 4671 4672 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4673 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4674 4675 if (!rdev->ops->add_mpath) 4676 return -EOPNOTSUPP; 4677 4678 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4679 return -EOPNOTSUPP; 4680 4681 return rdev_add_mpath(rdev, dev, dst, next_hop); 4682 } 4683 4684 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4685 { 4686 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4687 struct net_device *dev = info->user_ptr[1]; 4688 u8 *dst = NULL; 4689 4690 if (info->attrs[NL80211_ATTR_MAC]) 4691 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4692 4693 if (!rdev->ops->del_mpath) 4694 return -EOPNOTSUPP; 4695 4696 return rdev_del_mpath(rdev, dev, dst); 4697 } 4698 4699 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4700 { 4701 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4702 int err; 4703 struct net_device *dev = info->user_ptr[1]; 4704 struct mpath_info pinfo; 4705 struct sk_buff *msg; 4706 u8 *dst = NULL; 4707 u8 mpp[ETH_ALEN]; 4708 4709 memset(&pinfo, 0, sizeof(pinfo)); 4710 4711 if (!info->attrs[NL80211_ATTR_MAC]) 4712 return -EINVAL; 4713 4714 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4715 4716 if (!rdev->ops->get_mpp) 4717 return -EOPNOTSUPP; 4718 4719 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4720 return -EOPNOTSUPP; 4721 4722 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4723 if (err) 4724 return err; 4725 4726 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4727 if (!msg) 4728 return -ENOMEM; 4729 4730 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4731 dev, dst, mpp, &pinfo) < 0) { 4732 nlmsg_free(msg); 4733 return -ENOBUFS; 4734 } 4735 4736 return genlmsg_reply(msg, info); 4737 } 4738 4739 static int nl80211_dump_mpp(struct sk_buff *skb, 4740 struct netlink_callback *cb) 4741 { 4742 struct mpath_info pinfo; 4743 struct cfg80211_registered_device *rdev; 4744 struct wireless_dev *wdev; 4745 u8 dst[ETH_ALEN]; 4746 u8 mpp[ETH_ALEN]; 4747 int path_idx = cb->args[2]; 4748 int err; 4749 4750 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4751 if (err) 4752 return err; 4753 4754 if (!rdev->ops->dump_mpp) { 4755 err = -EOPNOTSUPP; 4756 goto out_err; 4757 } 4758 4759 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4760 err = -EOPNOTSUPP; 4761 goto out_err; 4762 } 4763 4764 while (1) { 4765 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 4766 mpp, &pinfo); 4767 if (err == -ENOENT) 4768 break; 4769 if (err) 4770 goto out_err; 4771 4772 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4773 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4774 wdev->netdev, dst, mpp, 4775 &pinfo) < 0) 4776 goto out; 4777 4778 path_idx++; 4779 } 4780 4781 out: 4782 cb->args[2] = path_idx; 4783 err = skb->len; 4784 out_err: 4785 nl80211_finish_wdev_dump(rdev); 4786 return err; 4787 } 4788 4789 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 4790 { 4791 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4792 struct net_device *dev = info->user_ptr[1]; 4793 struct wireless_dev *wdev = dev->ieee80211_ptr; 4794 struct bss_parameters params; 4795 int err; 4796 4797 memset(¶ms, 0, sizeof(params)); 4798 /* default to not changing parameters */ 4799 params.use_cts_prot = -1; 4800 params.use_short_preamble = -1; 4801 params.use_short_slot_time = -1; 4802 params.ap_isolate = -1; 4803 params.ht_opmode = -1; 4804 params.p2p_ctwindow = -1; 4805 params.p2p_opp_ps = -1; 4806 4807 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 4808 params.use_cts_prot = 4809 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 4810 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 4811 params.use_short_preamble = 4812 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 4813 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 4814 params.use_short_slot_time = 4815 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 4816 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 4817 params.basic_rates = 4818 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4819 params.basic_rates_len = 4820 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 4821 } 4822 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 4823 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 4824 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 4825 params.ht_opmode = 4826 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 4827 4828 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 4829 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4830 return -EINVAL; 4831 params.p2p_ctwindow = 4832 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 4833 if (params.p2p_ctwindow < 0) 4834 return -EINVAL; 4835 if (params.p2p_ctwindow != 0 && 4836 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 4837 return -EINVAL; 4838 } 4839 4840 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 4841 u8 tmp; 4842 4843 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4844 return -EINVAL; 4845 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 4846 if (tmp > 1) 4847 return -EINVAL; 4848 params.p2p_opp_ps = tmp; 4849 if (params.p2p_opp_ps && 4850 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 4851 return -EINVAL; 4852 } 4853 4854 if (!rdev->ops->change_bss) 4855 return -EOPNOTSUPP; 4856 4857 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4858 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4859 return -EOPNOTSUPP; 4860 4861 wdev_lock(wdev); 4862 err = rdev_change_bss(rdev, dev, ¶ms); 4863 wdev_unlock(wdev); 4864 4865 return err; 4866 } 4867 4868 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 4869 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 4870 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 4871 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 4872 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 4873 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 4874 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 4875 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 4876 }; 4877 4878 static int parse_reg_rule(struct nlattr *tb[], 4879 struct ieee80211_reg_rule *reg_rule) 4880 { 4881 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 4882 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 4883 4884 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 4885 return -EINVAL; 4886 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 4887 return -EINVAL; 4888 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 4889 return -EINVAL; 4890 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 4891 return -EINVAL; 4892 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 4893 return -EINVAL; 4894 4895 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 4896 4897 freq_range->start_freq_khz = 4898 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 4899 freq_range->end_freq_khz = 4900 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 4901 freq_range->max_bandwidth_khz = 4902 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 4903 4904 power_rule->max_eirp = 4905 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 4906 4907 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 4908 power_rule->max_antenna_gain = 4909 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 4910 4911 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 4912 reg_rule->dfs_cac_ms = 4913 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 4914 4915 return 0; 4916 } 4917 4918 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 4919 { 4920 char *data = NULL; 4921 enum nl80211_user_reg_hint_type user_reg_hint_type; 4922 4923 /* 4924 * You should only get this when cfg80211 hasn't yet initialized 4925 * completely when built-in to the kernel right between the time 4926 * window between nl80211_init() and regulatory_init(), if that is 4927 * even possible. 4928 */ 4929 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 4930 return -EINPROGRESS; 4931 4932 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 4933 user_reg_hint_type = 4934 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 4935 else 4936 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 4937 4938 switch (user_reg_hint_type) { 4939 case NL80211_USER_REG_HINT_USER: 4940 case NL80211_USER_REG_HINT_CELL_BASE: 4941 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 4942 return -EINVAL; 4943 4944 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 4945 return regulatory_hint_user(data, user_reg_hint_type); 4946 case NL80211_USER_REG_HINT_INDOOR: 4947 return regulatory_hint_indoor_user(); 4948 default: 4949 return -EINVAL; 4950 } 4951 } 4952 4953 static int nl80211_get_mesh_config(struct sk_buff *skb, 4954 struct genl_info *info) 4955 { 4956 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4957 struct net_device *dev = info->user_ptr[1]; 4958 struct wireless_dev *wdev = dev->ieee80211_ptr; 4959 struct mesh_config cur_params; 4960 int err = 0; 4961 void *hdr; 4962 struct nlattr *pinfoattr; 4963 struct sk_buff *msg; 4964 4965 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 4966 return -EOPNOTSUPP; 4967 4968 if (!rdev->ops->get_mesh_config) 4969 return -EOPNOTSUPP; 4970 4971 wdev_lock(wdev); 4972 /* If not connected, get default parameters */ 4973 if (!wdev->mesh_id_len) 4974 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 4975 else 4976 err = rdev_get_mesh_config(rdev, dev, &cur_params); 4977 wdev_unlock(wdev); 4978 4979 if (err) 4980 return err; 4981 4982 /* Draw up a netlink message to send back */ 4983 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4984 if (!msg) 4985 return -ENOMEM; 4986 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 4987 NL80211_CMD_GET_MESH_CONFIG); 4988 if (!hdr) 4989 goto out; 4990 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 4991 if (!pinfoattr) 4992 goto nla_put_failure; 4993 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4994 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 4995 cur_params.dot11MeshRetryTimeout) || 4996 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 4997 cur_params.dot11MeshConfirmTimeout) || 4998 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 4999 cur_params.dot11MeshHoldingTimeout) || 5000 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5001 cur_params.dot11MeshMaxPeerLinks) || 5002 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5003 cur_params.dot11MeshMaxRetries) || 5004 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5005 cur_params.dot11MeshTTL) || 5006 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5007 cur_params.element_ttl) || 5008 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5009 cur_params.auto_open_plinks) || 5010 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5011 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5012 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5013 cur_params.dot11MeshHWMPmaxPREQretries) || 5014 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5015 cur_params.path_refresh_time) || 5016 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5017 cur_params.min_discovery_timeout) || 5018 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5019 cur_params.dot11MeshHWMPactivePathTimeout) || 5020 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5021 cur_params.dot11MeshHWMPpreqMinInterval) || 5022 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5023 cur_params.dot11MeshHWMPperrMinInterval) || 5024 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5025 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5026 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5027 cur_params.dot11MeshHWMPRootMode) || 5028 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5029 cur_params.dot11MeshHWMPRannInterval) || 5030 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5031 cur_params.dot11MeshGateAnnouncementProtocol) || 5032 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5033 cur_params.dot11MeshForwarding) || 5034 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5035 cur_params.rssi_threshold) || 5036 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5037 cur_params.ht_opmode) || 5038 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5039 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5040 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5041 cur_params.dot11MeshHWMProotInterval) || 5042 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5043 cur_params.dot11MeshHWMPconfirmationInterval) || 5044 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5045 cur_params.power_mode) || 5046 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5047 cur_params.dot11MeshAwakeWindowDuration) || 5048 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5049 cur_params.plink_timeout)) 5050 goto nla_put_failure; 5051 nla_nest_end(msg, pinfoattr); 5052 genlmsg_end(msg, hdr); 5053 return genlmsg_reply(msg, info); 5054 5055 nla_put_failure: 5056 genlmsg_cancel(msg, hdr); 5057 out: 5058 nlmsg_free(msg); 5059 return -ENOBUFS; 5060 } 5061 5062 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5063 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5064 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5065 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5066 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5067 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5068 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5069 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5070 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5071 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5072 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5073 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5074 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5075 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5076 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5077 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5078 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5079 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5080 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5081 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5082 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5083 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5084 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5085 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5086 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5087 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5088 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5089 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5090 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5091 }; 5092 5093 static const struct nla_policy 5094 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5095 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5096 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5097 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5098 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5099 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5100 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5101 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5102 .len = IEEE80211_MAX_DATA_LEN }, 5103 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5104 }; 5105 5106 static int nl80211_parse_mesh_config(struct genl_info *info, 5107 struct mesh_config *cfg, 5108 u32 *mask_out) 5109 { 5110 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5111 u32 mask = 0; 5112 5113 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5114 do { \ 5115 if (tb[attr]) { \ 5116 if (fn(tb[attr]) < min || fn(tb[attr]) > max) \ 5117 return -EINVAL; \ 5118 cfg->param = fn(tb[attr]); \ 5119 mask |= (1 << (attr - 1)); \ 5120 } \ 5121 } while (0) 5122 5123 5124 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5125 return -EINVAL; 5126 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5127 info->attrs[NL80211_ATTR_MESH_CONFIG], 5128 nl80211_meshconf_params_policy)) 5129 return -EINVAL; 5130 5131 /* This makes sure that there aren't more than 32 mesh config 5132 * parameters (otherwise our bitfield scheme would not work.) */ 5133 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5134 5135 /* Fill in the params struct */ 5136 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5137 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5138 nla_get_u16); 5139 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5140 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5141 nla_get_u16); 5142 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5143 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5144 nla_get_u16); 5145 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5146 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5147 nla_get_u16); 5148 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5149 mask, NL80211_MESHCONF_MAX_RETRIES, 5150 nla_get_u8); 5151 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5152 mask, NL80211_MESHCONF_TTL, nla_get_u8); 5153 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5154 mask, NL80211_MESHCONF_ELEMENT_TTL, 5155 nla_get_u8); 5156 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5157 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5158 nla_get_u8); 5159 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5160 1, 255, mask, 5161 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5162 nla_get_u32); 5163 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5164 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5165 nla_get_u8); 5166 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5167 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5168 nla_get_u32); 5169 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5170 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5171 nla_get_u16); 5172 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5173 1, 65535, mask, 5174 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5175 nla_get_u32); 5176 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5177 1, 65535, mask, 5178 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5179 nla_get_u16); 5180 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5181 1, 65535, mask, 5182 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5183 nla_get_u16); 5184 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5185 dot11MeshHWMPnetDiameterTraversalTime, 5186 1, 65535, mask, 5187 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5188 nla_get_u16); 5189 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5190 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5191 nla_get_u8); 5192 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5193 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5194 nla_get_u16); 5195 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5196 dot11MeshGateAnnouncementProtocol, 0, 1, 5197 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5198 nla_get_u8); 5199 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5200 mask, NL80211_MESHCONF_FORWARDING, 5201 nla_get_u8); 5202 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5203 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5204 nla_get_s32); 5205 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5206 mask, NL80211_MESHCONF_HT_OPMODE, 5207 nla_get_u16); 5208 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5209 1, 65535, mask, 5210 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5211 nla_get_u32); 5212 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5213 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5214 nla_get_u16); 5215 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5216 dot11MeshHWMPconfirmationInterval, 5217 1, 65535, mask, 5218 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5219 nla_get_u16); 5220 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5221 NL80211_MESH_POWER_ACTIVE, 5222 NL80211_MESH_POWER_MAX, 5223 mask, NL80211_MESHCONF_POWER_MODE, 5224 nla_get_u32); 5225 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5226 0, 65535, mask, 5227 NL80211_MESHCONF_AWAKE_WINDOW, nla_get_u16); 5228 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 1, 0xffffffff, 5229 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5230 nla_get_u32); 5231 if (mask_out) 5232 *mask_out = mask; 5233 5234 return 0; 5235 5236 #undef FILL_IN_MESH_PARAM_IF_SET 5237 } 5238 5239 static int nl80211_parse_mesh_setup(struct genl_info *info, 5240 struct mesh_setup *setup) 5241 { 5242 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5243 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5244 5245 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5246 return -EINVAL; 5247 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5248 info->attrs[NL80211_ATTR_MESH_SETUP], 5249 nl80211_mesh_setup_params_policy)) 5250 return -EINVAL; 5251 5252 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5253 setup->sync_method = 5254 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5255 IEEE80211_SYNC_METHOD_VENDOR : 5256 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5257 5258 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5259 setup->path_sel_proto = 5260 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5261 IEEE80211_PATH_PROTOCOL_VENDOR : 5262 IEEE80211_PATH_PROTOCOL_HWMP; 5263 5264 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5265 setup->path_metric = 5266 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5267 IEEE80211_PATH_METRIC_VENDOR : 5268 IEEE80211_PATH_METRIC_AIRTIME; 5269 5270 5271 if (tb[NL80211_MESH_SETUP_IE]) { 5272 struct nlattr *ieattr = 5273 tb[NL80211_MESH_SETUP_IE]; 5274 if (!is_valid_ie_attr(ieattr)) 5275 return -EINVAL; 5276 setup->ie = nla_data(ieattr); 5277 setup->ie_len = nla_len(ieattr); 5278 } 5279 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5280 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5281 return -EINVAL; 5282 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5283 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5284 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5285 if (setup->is_secure) 5286 setup->user_mpm = true; 5287 5288 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5289 if (!setup->user_mpm) 5290 return -EINVAL; 5291 setup->auth_id = 5292 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5293 } 5294 5295 return 0; 5296 } 5297 5298 static int nl80211_update_mesh_config(struct sk_buff *skb, 5299 struct genl_info *info) 5300 { 5301 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5302 struct net_device *dev = info->user_ptr[1]; 5303 struct wireless_dev *wdev = dev->ieee80211_ptr; 5304 struct mesh_config cfg; 5305 u32 mask; 5306 int err; 5307 5308 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5309 return -EOPNOTSUPP; 5310 5311 if (!rdev->ops->update_mesh_config) 5312 return -EOPNOTSUPP; 5313 5314 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5315 if (err) 5316 return err; 5317 5318 wdev_lock(wdev); 5319 if (!wdev->mesh_id_len) 5320 err = -ENOLINK; 5321 5322 if (!err) 5323 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5324 5325 wdev_unlock(wdev); 5326 5327 return err; 5328 } 5329 5330 static int nl80211_get_reg(struct sk_buff *skb, struct genl_info *info) 5331 { 5332 const struct ieee80211_regdomain *regdom; 5333 struct sk_buff *msg; 5334 void *hdr = NULL; 5335 struct nlattr *nl_reg_rules; 5336 unsigned int i; 5337 5338 if (!cfg80211_regdomain) 5339 return -EINVAL; 5340 5341 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5342 if (!msg) 5343 return -ENOBUFS; 5344 5345 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5346 NL80211_CMD_GET_REG); 5347 if (!hdr) 5348 goto put_failure; 5349 5350 if (reg_last_request_cell_base() && 5351 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5352 NL80211_USER_REG_HINT_CELL_BASE)) 5353 goto nla_put_failure; 5354 5355 rcu_read_lock(); 5356 regdom = rcu_dereference(cfg80211_regdomain); 5357 5358 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5359 (regdom->dfs_region && 5360 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5361 goto nla_put_failure_rcu; 5362 5363 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5364 if (!nl_reg_rules) 5365 goto nla_put_failure_rcu; 5366 5367 for (i = 0; i < regdom->n_reg_rules; i++) { 5368 struct nlattr *nl_reg_rule; 5369 const struct ieee80211_reg_rule *reg_rule; 5370 const struct ieee80211_freq_range *freq_range; 5371 const struct ieee80211_power_rule *power_rule; 5372 unsigned int max_bandwidth_khz; 5373 5374 reg_rule = ®dom->reg_rules[i]; 5375 freq_range = ®_rule->freq_range; 5376 power_rule = ®_rule->power_rule; 5377 5378 nl_reg_rule = nla_nest_start(msg, i); 5379 if (!nl_reg_rule) 5380 goto nla_put_failure_rcu; 5381 5382 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5383 if (!max_bandwidth_khz) 5384 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5385 reg_rule); 5386 5387 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5388 reg_rule->flags) || 5389 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5390 freq_range->start_freq_khz) || 5391 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5392 freq_range->end_freq_khz) || 5393 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5394 max_bandwidth_khz) || 5395 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5396 power_rule->max_antenna_gain) || 5397 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5398 power_rule->max_eirp) || 5399 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5400 reg_rule->dfs_cac_ms)) 5401 goto nla_put_failure_rcu; 5402 5403 nla_nest_end(msg, nl_reg_rule); 5404 } 5405 rcu_read_unlock(); 5406 5407 nla_nest_end(msg, nl_reg_rules); 5408 5409 genlmsg_end(msg, hdr); 5410 return genlmsg_reply(msg, info); 5411 5412 nla_put_failure_rcu: 5413 rcu_read_unlock(); 5414 nla_put_failure: 5415 genlmsg_cancel(msg, hdr); 5416 put_failure: 5417 nlmsg_free(msg); 5418 return -EMSGSIZE; 5419 } 5420 5421 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5422 { 5423 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5424 struct nlattr *nl_reg_rule; 5425 char *alpha2; 5426 int rem_reg_rules, r; 5427 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5428 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5429 struct ieee80211_regdomain *rd; 5430 5431 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5432 return -EINVAL; 5433 5434 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5435 return -EINVAL; 5436 5437 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5438 5439 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5440 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5441 5442 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5443 rem_reg_rules) { 5444 num_rules++; 5445 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5446 return -EINVAL; 5447 } 5448 5449 if (!reg_is_valid_request(alpha2)) 5450 return -EINVAL; 5451 5452 size_of_regd = sizeof(struct ieee80211_regdomain) + 5453 num_rules * sizeof(struct ieee80211_reg_rule); 5454 5455 rd = kzalloc(size_of_regd, GFP_KERNEL); 5456 if (!rd) 5457 return -ENOMEM; 5458 5459 rd->n_reg_rules = num_rules; 5460 rd->alpha2[0] = alpha2[0]; 5461 rd->alpha2[1] = alpha2[1]; 5462 5463 /* 5464 * Disable DFS master mode if the DFS region was 5465 * not supported or known on this kernel. 5466 */ 5467 if (reg_supported_dfs_region(dfs_region)) 5468 rd->dfs_region = dfs_region; 5469 5470 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5471 rem_reg_rules) { 5472 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5473 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5474 reg_rule_policy); 5475 if (r) 5476 goto bad_reg; 5477 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5478 if (r) 5479 goto bad_reg; 5480 5481 rule_idx++; 5482 5483 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5484 r = -EINVAL; 5485 goto bad_reg; 5486 } 5487 } 5488 5489 r = set_regdom(rd); 5490 /* set_regdom took ownership */ 5491 rd = NULL; 5492 5493 bad_reg: 5494 kfree(rd); 5495 return r; 5496 } 5497 5498 static int validate_scan_freqs(struct nlattr *freqs) 5499 { 5500 struct nlattr *attr1, *attr2; 5501 int n_channels = 0, tmp1, tmp2; 5502 5503 nla_for_each_nested(attr1, freqs, tmp1) { 5504 n_channels++; 5505 /* 5506 * Some hardware has a limited channel list for 5507 * scanning, and it is pretty much nonsensical 5508 * to scan for a channel twice, so disallow that 5509 * and don't require drivers to check that the 5510 * channel list they get isn't longer than what 5511 * they can scan, as long as they can scan all 5512 * the channels they registered at once. 5513 */ 5514 nla_for_each_nested(attr2, freqs, tmp2) 5515 if (attr1 != attr2 && 5516 nla_get_u32(attr1) == nla_get_u32(attr2)) 5517 return 0; 5518 } 5519 5520 return n_channels; 5521 } 5522 5523 static int nl80211_parse_random_mac(struct nlattr **attrs, 5524 u8 *mac_addr, u8 *mac_addr_mask) 5525 { 5526 int i; 5527 5528 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 5529 memset(mac_addr, 0, ETH_ALEN); 5530 memset(mac_addr_mask, 0, ETH_ALEN); 5531 mac_addr[0] = 0x2; 5532 mac_addr_mask[0] = 0x3; 5533 5534 return 0; 5535 } 5536 5537 /* need both or none */ 5538 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 5539 return -EINVAL; 5540 5541 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 5542 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 5543 5544 /* don't allow or configure an mcast address */ 5545 if (!is_multicast_ether_addr(mac_addr_mask) || 5546 is_multicast_ether_addr(mac_addr)) 5547 return -EINVAL; 5548 5549 /* 5550 * allow users to pass a MAC address that has bits set outside 5551 * of the mask, but don't bother drivers with having to deal 5552 * with such bits 5553 */ 5554 for (i = 0; i < ETH_ALEN; i++) 5555 mac_addr[i] &= mac_addr_mask[i]; 5556 5557 return 0; 5558 } 5559 5560 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 5561 { 5562 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5563 struct wireless_dev *wdev = info->user_ptr[1]; 5564 struct cfg80211_scan_request *request; 5565 struct nlattr *attr; 5566 struct wiphy *wiphy; 5567 int err, tmp, n_ssids = 0, n_channels, i; 5568 size_t ie_len; 5569 5570 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 5571 return -EINVAL; 5572 5573 wiphy = &rdev->wiphy; 5574 5575 if (!rdev->ops->scan) 5576 return -EOPNOTSUPP; 5577 5578 if (rdev->scan_req || rdev->scan_msg) { 5579 err = -EBUSY; 5580 goto unlock; 5581 } 5582 5583 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5584 n_channels = validate_scan_freqs( 5585 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5586 if (!n_channels) { 5587 err = -EINVAL; 5588 goto unlock; 5589 } 5590 } else { 5591 n_channels = ieee80211_get_num_supported_channels(wiphy); 5592 } 5593 5594 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 5595 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 5596 n_ssids++; 5597 5598 if (n_ssids > wiphy->max_scan_ssids) { 5599 err = -EINVAL; 5600 goto unlock; 5601 } 5602 5603 if (info->attrs[NL80211_ATTR_IE]) 5604 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5605 else 5606 ie_len = 0; 5607 5608 if (ie_len > wiphy->max_scan_ie_len) { 5609 err = -EINVAL; 5610 goto unlock; 5611 } 5612 5613 request = kzalloc(sizeof(*request) 5614 + sizeof(*request->ssids) * n_ssids 5615 + sizeof(*request->channels) * n_channels 5616 + ie_len, GFP_KERNEL); 5617 if (!request) { 5618 err = -ENOMEM; 5619 goto unlock; 5620 } 5621 5622 if (n_ssids) 5623 request->ssids = (void *)&request->channels[n_channels]; 5624 request->n_ssids = n_ssids; 5625 if (ie_len) { 5626 if (request->ssids) 5627 request->ie = (void *)(request->ssids + n_ssids); 5628 else 5629 request->ie = (void *)(request->channels + n_channels); 5630 } 5631 5632 i = 0; 5633 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5634 /* user specified, bail out if channel not found */ 5635 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 5636 struct ieee80211_channel *chan; 5637 5638 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5639 5640 if (!chan) { 5641 err = -EINVAL; 5642 goto out_free; 5643 } 5644 5645 /* ignore disabled channels */ 5646 if (chan->flags & IEEE80211_CHAN_DISABLED) 5647 continue; 5648 5649 request->channels[i] = chan; 5650 i++; 5651 } 5652 } else { 5653 enum ieee80211_band band; 5654 5655 /* all channels */ 5656 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5657 int j; 5658 if (!wiphy->bands[band]) 5659 continue; 5660 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5661 struct ieee80211_channel *chan; 5662 5663 chan = &wiphy->bands[band]->channels[j]; 5664 5665 if (chan->flags & IEEE80211_CHAN_DISABLED) 5666 continue; 5667 5668 request->channels[i] = chan; 5669 i++; 5670 } 5671 } 5672 } 5673 5674 if (!i) { 5675 err = -EINVAL; 5676 goto out_free; 5677 } 5678 5679 request->n_channels = i; 5680 5681 i = 0; 5682 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) { 5683 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 5684 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5685 err = -EINVAL; 5686 goto out_free; 5687 } 5688 request->ssids[i].ssid_len = nla_len(attr); 5689 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 5690 i++; 5691 } 5692 } 5693 5694 if (info->attrs[NL80211_ATTR_IE]) { 5695 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 5696 memcpy((void *)request->ie, 5697 nla_data(info->attrs[NL80211_ATTR_IE]), 5698 request->ie_len); 5699 } 5700 5701 for (i = 0; i < IEEE80211_NUM_BANDS; i++) 5702 if (wiphy->bands[i]) 5703 request->rates[i] = 5704 (1 << wiphy->bands[i]->n_bitrates) - 1; 5705 5706 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 5707 nla_for_each_nested(attr, 5708 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 5709 tmp) { 5710 enum ieee80211_band band = nla_type(attr); 5711 5712 if (band < 0 || band >= IEEE80211_NUM_BANDS) { 5713 err = -EINVAL; 5714 goto out_free; 5715 } 5716 5717 if (!wiphy->bands[band]) 5718 continue; 5719 5720 err = ieee80211_get_ratemask(wiphy->bands[band], 5721 nla_data(attr), 5722 nla_len(attr), 5723 &request->rates[band]); 5724 if (err) 5725 goto out_free; 5726 } 5727 } 5728 5729 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 5730 request->flags = nla_get_u32( 5731 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 5732 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 5733 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 5734 err = -EOPNOTSUPP; 5735 goto out_free; 5736 } 5737 5738 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 5739 if (!(wiphy->features & 5740 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 5741 err = -EOPNOTSUPP; 5742 goto out_free; 5743 } 5744 5745 if (wdev->current_bss) { 5746 err = -EOPNOTSUPP; 5747 goto out_free; 5748 } 5749 5750 err = nl80211_parse_random_mac(info->attrs, 5751 request->mac_addr, 5752 request->mac_addr_mask); 5753 if (err) 5754 goto out_free; 5755 } 5756 } 5757 5758 request->no_cck = 5759 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 5760 5761 request->wdev = wdev; 5762 request->wiphy = &rdev->wiphy; 5763 request->scan_start = jiffies; 5764 5765 rdev->scan_req = request; 5766 err = rdev_scan(rdev, request); 5767 5768 if (!err) { 5769 nl80211_send_scan_start(rdev, wdev); 5770 if (wdev->netdev) 5771 dev_hold(wdev->netdev); 5772 } else { 5773 out_free: 5774 rdev->scan_req = NULL; 5775 kfree(request); 5776 } 5777 5778 unlock: 5779 return err; 5780 } 5781 5782 static struct cfg80211_sched_scan_request * 5783 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 5784 struct nlattr **attrs) 5785 { 5786 struct cfg80211_sched_scan_request *request; 5787 struct nlattr *attr; 5788 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i; 5789 u32 interval; 5790 enum ieee80211_band band; 5791 size_t ie_len; 5792 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 5793 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 5794 5795 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 5796 return ERR_PTR(-EINVAL); 5797 5798 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 5799 return ERR_PTR(-EINVAL); 5800 5801 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 5802 if (interval == 0) 5803 return ERR_PTR(-EINVAL); 5804 5805 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5806 n_channels = validate_scan_freqs( 5807 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 5808 if (!n_channels) 5809 return ERR_PTR(-EINVAL); 5810 } else { 5811 n_channels = ieee80211_get_num_supported_channels(wiphy); 5812 } 5813 5814 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 5815 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5816 tmp) 5817 n_ssids++; 5818 5819 if (n_ssids > wiphy->max_sched_scan_ssids) 5820 return ERR_PTR(-EINVAL); 5821 5822 /* 5823 * First, count the number of 'real' matchsets. Due to an issue with 5824 * the old implementation, matchsets containing only the RSSI attribute 5825 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 5826 * RSSI for all matchsets, rather than their own matchset for reporting 5827 * all APs with a strong RSSI. This is needed to be compatible with 5828 * older userspace that treated a matchset with only the RSSI as the 5829 * global RSSI for all other matchsets - if there are other matchsets. 5830 */ 5831 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5832 nla_for_each_nested(attr, 5833 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5834 tmp) { 5835 struct nlattr *rssi; 5836 5837 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5838 nla_data(attr), nla_len(attr), 5839 nl80211_match_policy); 5840 if (err) 5841 return ERR_PTR(err); 5842 /* add other standalone attributes here */ 5843 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 5844 n_match_sets++; 5845 continue; 5846 } 5847 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5848 if (rssi) 5849 default_match_rssi = nla_get_s32(rssi); 5850 } 5851 } 5852 5853 /* However, if there's no other matchset, add the RSSI one */ 5854 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 5855 n_match_sets = 1; 5856 5857 if (n_match_sets > wiphy->max_match_sets) 5858 return ERR_PTR(-EINVAL); 5859 5860 if (attrs[NL80211_ATTR_IE]) 5861 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 5862 else 5863 ie_len = 0; 5864 5865 if (ie_len > wiphy->max_sched_scan_ie_len) 5866 return ERR_PTR(-EINVAL); 5867 5868 request = kzalloc(sizeof(*request) 5869 + sizeof(*request->ssids) * n_ssids 5870 + sizeof(*request->match_sets) * n_match_sets 5871 + sizeof(*request->channels) * n_channels 5872 + ie_len, GFP_KERNEL); 5873 if (!request) 5874 return ERR_PTR(-ENOMEM); 5875 5876 if (n_ssids) 5877 request->ssids = (void *)&request->channels[n_channels]; 5878 request->n_ssids = n_ssids; 5879 if (ie_len) { 5880 if (request->ssids) 5881 request->ie = (void *)(request->ssids + n_ssids); 5882 else 5883 request->ie = (void *)(request->channels + n_channels); 5884 } 5885 5886 if (n_match_sets) { 5887 if (request->ie) 5888 request->match_sets = (void *)(request->ie + ie_len); 5889 else if (request->ssids) 5890 request->match_sets = 5891 (void *)(request->ssids + n_ssids); 5892 else 5893 request->match_sets = 5894 (void *)(request->channels + n_channels); 5895 } 5896 request->n_match_sets = n_match_sets; 5897 5898 i = 0; 5899 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 5900 /* user specified, bail out if channel not found */ 5901 nla_for_each_nested(attr, 5902 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 5903 tmp) { 5904 struct ieee80211_channel *chan; 5905 5906 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 5907 5908 if (!chan) { 5909 err = -EINVAL; 5910 goto out_free; 5911 } 5912 5913 /* ignore disabled channels */ 5914 if (chan->flags & IEEE80211_CHAN_DISABLED) 5915 continue; 5916 5917 request->channels[i] = chan; 5918 i++; 5919 } 5920 } else { 5921 /* all channels */ 5922 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 5923 int j; 5924 if (!wiphy->bands[band]) 5925 continue; 5926 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 5927 struct ieee80211_channel *chan; 5928 5929 chan = &wiphy->bands[band]->channels[j]; 5930 5931 if (chan->flags & IEEE80211_CHAN_DISABLED) 5932 continue; 5933 5934 request->channels[i] = chan; 5935 i++; 5936 } 5937 } 5938 } 5939 5940 if (!i) { 5941 err = -EINVAL; 5942 goto out_free; 5943 } 5944 5945 request->n_channels = i; 5946 5947 i = 0; 5948 if (attrs[NL80211_ATTR_SCAN_SSIDS]) { 5949 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 5950 tmp) { 5951 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 5952 err = -EINVAL; 5953 goto out_free; 5954 } 5955 request->ssids[i].ssid_len = nla_len(attr); 5956 memcpy(request->ssids[i].ssid, nla_data(attr), 5957 nla_len(attr)); 5958 i++; 5959 } 5960 } 5961 5962 i = 0; 5963 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 5964 nla_for_each_nested(attr, 5965 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 5966 tmp) { 5967 struct nlattr *ssid, *rssi; 5968 5969 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 5970 nla_data(attr), nla_len(attr), 5971 nl80211_match_policy); 5972 if (err) 5973 goto out_free; 5974 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 5975 if (ssid) { 5976 if (WARN_ON(i >= n_match_sets)) { 5977 /* this indicates a programming error, 5978 * the loop above should have verified 5979 * things properly 5980 */ 5981 err = -EINVAL; 5982 goto out_free; 5983 } 5984 5985 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 5986 err = -EINVAL; 5987 goto out_free; 5988 } 5989 memcpy(request->match_sets[i].ssid.ssid, 5990 nla_data(ssid), nla_len(ssid)); 5991 request->match_sets[i].ssid.ssid_len = 5992 nla_len(ssid); 5993 /* special attribute - old implemenation w/a */ 5994 request->match_sets[i].rssi_thold = 5995 default_match_rssi; 5996 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 5997 if (rssi) 5998 request->match_sets[i].rssi_thold = 5999 nla_get_s32(rssi); 6000 } 6001 i++; 6002 } 6003 6004 /* there was no other matchset, so the RSSI one is alone */ 6005 if (i == 0 && n_match_sets) 6006 request->match_sets[0].rssi_thold = default_match_rssi; 6007 6008 request->min_rssi_thold = INT_MAX; 6009 for (i = 0; i < n_match_sets; i++) 6010 request->min_rssi_thold = 6011 min(request->match_sets[i].rssi_thold, 6012 request->min_rssi_thold); 6013 } else { 6014 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6015 } 6016 6017 if (ie_len) { 6018 request->ie_len = ie_len; 6019 memcpy((void *)request->ie, 6020 nla_data(attrs[NL80211_ATTR_IE]), 6021 request->ie_len); 6022 } 6023 6024 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6025 request->flags = nla_get_u32( 6026 attrs[NL80211_ATTR_SCAN_FLAGS]); 6027 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6028 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6029 err = -EOPNOTSUPP; 6030 goto out_free; 6031 } 6032 6033 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6034 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6035 6036 if (!wdev) /* must be net-detect */ 6037 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6038 6039 if (!(wiphy->features & flg)) { 6040 err = -EOPNOTSUPP; 6041 goto out_free; 6042 } 6043 6044 if (wdev && wdev->current_bss) { 6045 err = -EOPNOTSUPP; 6046 goto out_free; 6047 } 6048 6049 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6050 request->mac_addr_mask); 6051 if (err) 6052 goto out_free; 6053 } 6054 } 6055 6056 request->interval = interval; 6057 request->scan_start = jiffies; 6058 6059 return request; 6060 6061 out_free: 6062 kfree(request); 6063 return ERR_PTR(err); 6064 } 6065 6066 static int nl80211_start_sched_scan(struct sk_buff *skb, 6067 struct genl_info *info) 6068 { 6069 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6070 struct net_device *dev = info->user_ptr[1]; 6071 struct wireless_dev *wdev = dev->ieee80211_ptr; 6072 int err; 6073 6074 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6075 !rdev->ops->sched_scan_start) 6076 return -EOPNOTSUPP; 6077 6078 if (rdev->sched_scan_req) 6079 return -EINPROGRESS; 6080 6081 rdev->sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6082 info->attrs); 6083 err = PTR_ERR_OR_ZERO(rdev->sched_scan_req); 6084 if (err) 6085 goto out_err; 6086 6087 err = rdev_sched_scan_start(rdev, dev, rdev->sched_scan_req); 6088 if (err) 6089 goto out_free; 6090 6091 rdev->sched_scan_req->dev = dev; 6092 rdev->sched_scan_req->wiphy = &rdev->wiphy; 6093 6094 nl80211_send_sched_scan(rdev, dev, 6095 NL80211_CMD_START_SCHED_SCAN); 6096 return 0; 6097 6098 out_free: 6099 kfree(rdev->sched_scan_req); 6100 out_err: 6101 rdev->sched_scan_req = NULL; 6102 return err; 6103 } 6104 6105 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6106 struct genl_info *info) 6107 { 6108 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6109 6110 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6111 !rdev->ops->sched_scan_stop) 6112 return -EOPNOTSUPP; 6113 6114 return __cfg80211_stop_sched_scan(rdev, false); 6115 } 6116 6117 static int nl80211_start_radar_detection(struct sk_buff *skb, 6118 struct genl_info *info) 6119 { 6120 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6121 struct net_device *dev = info->user_ptr[1]; 6122 struct wireless_dev *wdev = dev->ieee80211_ptr; 6123 struct cfg80211_chan_def chandef; 6124 enum nl80211_dfs_regions dfs_region; 6125 unsigned int cac_time_ms; 6126 int err; 6127 6128 dfs_region = reg_get_dfs_region(wdev->wiphy); 6129 if (dfs_region == NL80211_DFS_UNSET) 6130 return -EINVAL; 6131 6132 err = nl80211_parse_chandef(rdev, info, &chandef); 6133 if (err) 6134 return err; 6135 6136 if (netif_carrier_ok(dev)) 6137 return -EBUSY; 6138 6139 if (wdev->cac_started) 6140 return -EBUSY; 6141 6142 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6143 wdev->iftype); 6144 if (err < 0) 6145 return err; 6146 6147 if (err == 0) 6148 return -EINVAL; 6149 6150 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6151 return -EINVAL; 6152 6153 if (!rdev->ops->start_radar_detection) 6154 return -EOPNOTSUPP; 6155 6156 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6157 if (WARN_ON(!cac_time_ms)) 6158 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6159 6160 err = rdev->ops->start_radar_detection(&rdev->wiphy, dev, &chandef, 6161 cac_time_ms); 6162 if (!err) { 6163 wdev->chandef = chandef; 6164 wdev->cac_started = true; 6165 wdev->cac_start_time = jiffies; 6166 wdev->cac_time_ms = cac_time_ms; 6167 } 6168 return err; 6169 } 6170 6171 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6172 { 6173 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6174 struct net_device *dev = info->user_ptr[1]; 6175 struct wireless_dev *wdev = dev->ieee80211_ptr; 6176 struct cfg80211_csa_settings params; 6177 /* csa_attrs is defined static to avoid waste of stack size - this 6178 * function is called under RTNL lock, so this should not be a problem. 6179 */ 6180 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6181 int err; 6182 bool need_new_beacon = false; 6183 int len, i; 6184 u32 cs_count; 6185 6186 if (!rdev->ops->channel_switch || 6187 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6188 return -EOPNOTSUPP; 6189 6190 switch (dev->ieee80211_ptr->iftype) { 6191 case NL80211_IFTYPE_AP: 6192 case NL80211_IFTYPE_P2P_GO: 6193 need_new_beacon = true; 6194 6195 /* useless if AP is not running */ 6196 if (!wdev->beacon_interval) 6197 return -ENOTCONN; 6198 break; 6199 case NL80211_IFTYPE_ADHOC: 6200 if (!wdev->ssid_len) 6201 return -ENOTCONN; 6202 break; 6203 case NL80211_IFTYPE_MESH_POINT: 6204 if (!wdev->mesh_id_len) 6205 return -ENOTCONN; 6206 break; 6207 default: 6208 return -EOPNOTSUPP; 6209 } 6210 6211 memset(¶ms, 0, sizeof(params)); 6212 6213 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6214 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6215 return -EINVAL; 6216 6217 /* only important for AP, IBSS and mesh create IEs internally */ 6218 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6219 return -EINVAL; 6220 6221 /* Even though the attribute is u32, the specification says 6222 * u8, so let's make sure we don't overflow. 6223 */ 6224 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6225 if (cs_count > 255) 6226 return -EINVAL; 6227 6228 params.count = cs_count; 6229 6230 if (!need_new_beacon) 6231 goto skip_beacons; 6232 6233 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6234 if (err) 6235 return err; 6236 6237 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6238 info->attrs[NL80211_ATTR_CSA_IES], 6239 nl80211_policy); 6240 if (err) 6241 return err; 6242 6243 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6244 if (err) 6245 return err; 6246 6247 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6248 return -EINVAL; 6249 6250 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6251 if (!len || (len % sizeof(u16))) 6252 return -EINVAL; 6253 6254 params.n_counter_offsets_beacon = len / sizeof(u16); 6255 if (rdev->wiphy.max_num_csa_counters && 6256 (params.n_counter_offsets_beacon > 6257 rdev->wiphy.max_num_csa_counters)) 6258 return -EINVAL; 6259 6260 params.counter_offsets_beacon = 6261 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6262 6263 /* sanity checks - counters should fit and be the same */ 6264 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6265 u16 offset = params.counter_offsets_beacon[i]; 6266 6267 if (offset >= params.beacon_csa.tail_len) 6268 return -EINVAL; 6269 6270 if (params.beacon_csa.tail[offset] != params.count) 6271 return -EINVAL; 6272 } 6273 6274 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6275 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6276 if (!len || (len % sizeof(u16))) 6277 return -EINVAL; 6278 6279 params.n_counter_offsets_presp = len / sizeof(u16); 6280 if (rdev->wiphy.max_num_csa_counters && 6281 (params.n_counter_offsets_beacon > 6282 rdev->wiphy.max_num_csa_counters)) 6283 return -EINVAL; 6284 6285 params.counter_offsets_presp = 6286 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6287 6288 /* sanity checks - counters should fit and be the same */ 6289 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6290 u16 offset = params.counter_offsets_presp[i]; 6291 6292 if (offset >= params.beacon_csa.probe_resp_len) 6293 return -EINVAL; 6294 6295 if (params.beacon_csa.probe_resp[offset] != 6296 params.count) 6297 return -EINVAL; 6298 } 6299 } 6300 6301 skip_beacons: 6302 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6303 if (err) 6304 return err; 6305 6306 if (!cfg80211_reg_can_beacon(&rdev->wiphy, ¶ms.chandef, 6307 wdev->iftype)) 6308 return -EINVAL; 6309 6310 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6311 ¶ms.chandef, 6312 wdev->iftype); 6313 if (err < 0) 6314 return err; 6315 6316 if (err > 0) 6317 params.radar_required = true; 6318 6319 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6320 params.block_tx = true; 6321 6322 wdev_lock(wdev); 6323 err = rdev_channel_switch(rdev, dev, ¶ms); 6324 wdev_unlock(wdev); 6325 6326 return err; 6327 } 6328 6329 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 6330 u32 seq, int flags, 6331 struct cfg80211_registered_device *rdev, 6332 struct wireless_dev *wdev, 6333 struct cfg80211_internal_bss *intbss) 6334 { 6335 struct cfg80211_bss *res = &intbss->pub; 6336 const struct cfg80211_bss_ies *ies; 6337 void *hdr; 6338 struct nlattr *bss; 6339 6340 ASSERT_WDEV_LOCK(wdev); 6341 6342 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 6343 NL80211_CMD_NEW_SCAN_RESULTS); 6344 if (!hdr) 6345 return -1; 6346 6347 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 6348 6349 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 6350 goto nla_put_failure; 6351 if (wdev->netdev && 6352 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 6353 goto nla_put_failure; 6354 if (nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 6355 goto nla_put_failure; 6356 6357 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 6358 if (!bss) 6359 goto nla_put_failure; 6360 if ((!is_zero_ether_addr(res->bssid) && 6361 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 6362 goto nla_put_failure; 6363 6364 rcu_read_lock(); 6365 /* indicate whether we have probe response data or not */ 6366 if (rcu_access_pointer(res->proberesp_ies) && 6367 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 6368 goto fail_unlock_rcu; 6369 6370 /* this pointer prefers to be pointed to probe response data 6371 * but is always valid 6372 */ 6373 ies = rcu_dereference(res->ies); 6374 if (ies) { 6375 if (nla_put_u64(msg, NL80211_BSS_TSF, ies->tsf)) 6376 goto fail_unlock_rcu; 6377 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 6378 ies->len, ies->data)) 6379 goto fail_unlock_rcu; 6380 } 6381 6382 /* and this pointer is always (unless driver didn't know) beacon data */ 6383 ies = rcu_dereference(res->beacon_ies); 6384 if (ies && ies->from_beacon) { 6385 if (nla_put_u64(msg, NL80211_BSS_BEACON_TSF, ies->tsf)) 6386 goto fail_unlock_rcu; 6387 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 6388 ies->len, ies->data)) 6389 goto fail_unlock_rcu; 6390 } 6391 rcu_read_unlock(); 6392 6393 if (res->beacon_interval && 6394 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 6395 goto nla_put_failure; 6396 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 6397 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 6398 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 6399 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 6400 jiffies_to_msecs(jiffies - intbss->ts))) 6401 goto nla_put_failure; 6402 6403 switch (rdev->wiphy.signal_type) { 6404 case CFG80211_SIGNAL_TYPE_MBM: 6405 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 6406 goto nla_put_failure; 6407 break; 6408 case CFG80211_SIGNAL_TYPE_UNSPEC: 6409 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 6410 goto nla_put_failure; 6411 break; 6412 default: 6413 break; 6414 } 6415 6416 switch (wdev->iftype) { 6417 case NL80211_IFTYPE_P2P_CLIENT: 6418 case NL80211_IFTYPE_STATION: 6419 if (intbss == wdev->current_bss && 6420 nla_put_u32(msg, NL80211_BSS_STATUS, 6421 NL80211_BSS_STATUS_ASSOCIATED)) 6422 goto nla_put_failure; 6423 break; 6424 case NL80211_IFTYPE_ADHOC: 6425 if (intbss == wdev->current_bss && 6426 nla_put_u32(msg, NL80211_BSS_STATUS, 6427 NL80211_BSS_STATUS_IBSS_JOINED)) 6428 goto nla_put_failure; 6429 break; 6430 default: 6431 break; 6432 } 6433 6434 nla_nest_end(msg, bss); 6435 6436 return genlmsg_end(msg, hdr); 6437 6438 fail_unlock_rcu: 6439 rcu_read_unlock(); 6440 nla_put_failure: 6441 genlmsg_cancel(msg, hdr); 6442 return -EMSGSIZE; 6443 } 6444 6445 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 6446 { 6447 struct cfg80211_registered_device *rdev; 6448 struct cfg80211_internal_bss *scan; 6449 struct wireless_dev *wdev; 6450 int start = cb->args[2], idx = 0; 6451 int err; 6452 6453 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6454 if (err) 6455 return err; 6456 6457 wdev_lock(wdev); 6458 spin_lock_bh(&rdev->bss_lock); 6459 cfg80211_bss_expire(rdev); 6460 6461 cb->seq = rdev->bss_generation; 6462 6463 list_for_each_entry(scan, &rdev->bss_list, list) { 6464 if (++idx <= start) 6465 continue; 6466 if (nl80211_send_bss(skb, cb, 6467 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6468 rdev, wdev, scan) < 0) { 6469 idx--; 6470 break; 6471 } 6472 } 6473 6474 spin_unlock_bh(&rdev->bss_lock); 6475 wdev_unlock(wdev); 6476 6477 cb->args[2] = idx; 6478 nl80211_finish_wdev_dump(rdev); 6479 6480 return skb->len; 6481 } 6482 6483 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 6484 int flags, struct net_device *dev, 6485 struct survey_info *survey) 6486 { 6487 void *hdr; 6488 struct nlattr *infoattr; 6489 6490 hdr = nl80211hdr_put(msg, portid, seq, flags, 6491 NL80211_CMD_NEW_SURVEY_RESULTS); 6492 if (!hdr) 6493 return -ENOMEM; 6494 6495 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 6496 goto nla_put_failure; 6497 6498 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 6499 if (!infoattr) 6500 goto nla_put_failure; 6501 6502 if (nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 6503 survey->channel->center_freq)) 6504 goto nla_put_failure; 6505 6506 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 6507 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 6508 goto nla_put_failure; 6509 if ((survey->filled & SURVEY_INFO_IN_USE) && 6510 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 6511 goto nla_put_failure; 6512 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME) && 6513 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME, 6514 survey->channel_time)) 6515 goto nla_put_failure; 6516 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_BUSY) && 6517 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_BUSY, 6518 survey->channel_time_busy)) 6519 goto nla_put_failure; 6520 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_EXT_BUSY) && 6521 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_EXT_BUSY, 6522 survey->channel_time_ext_busy)) 6523 goto nla_put_failure; 6524 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_RX) && 6525 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_RX, 6526 survey->channel_time_rx)) 6527 goto nla_put_failure; 6528 if ((survey->filled & SURVEY_INFO_CHANNEL_TIME_TX) && 6529 nla_put_u64(msg, NL80211_SURVEY_INFO_CHANNEL_TIME_TX, 6530 survey->channel_time_tx)) 6531 goto nla_put_failure; 6532 6533 nla_nest_end(msg, infoattr); 6534 6535 return genlmsg_end(msg, hdr); 6536 6537 nla_put_failure: 6538 genlmsg_cancel(msg, hdr); 6539 return -EMSGSIZE; 6540 } 6541 6542 static int nl80211_dump_survey(struct sk_buff *skb, 6543 struct netlink_callback *cb) 6544 { 6545 struct survey_info survey; 6546 struct cfg80211_registered_device *rdev; 6547 struct wireless_dev *wdev; 6548 int survey_idx = cb->args[2]; 6549 int res; 6550 6551 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 6552 if (res) 6553 return res; 6554 6555 if (!wdev->netdev) { 6556 res = -EINVAL; 6557 goto out_err; 6558 } 6559 6560 if (!rdev->ops->dump_survey) { 6561 res = -EOPNOTSUPP; 6562 goto out_err; 6563 } 6564 6565 while (1) { 6566 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 6567 if (res == -ENOENT) 6568 break; 6569 if (res) 6570 goto out_err; 6571 6572 /* Survey without a channel doesn't make sense */ 6573 if (!survey.channel) { 6574 res = -EINVAL; 6575 goto out; 6576 } 6577 6578 if (survey.channel->flags & IEEE80211_CHAN_DISABLED) { 6579 survey_idx++; 6580 continue; 6581 } 6582 6583 if (nl80211_send_survey(skb, 6584 NETLINK_CB(cb->skb).portid, 6585 cb->nlh->nlmsg_seq, NLM_F_MULTI, 6586 wdev->netdev, &survey) < 0) 6587 goto out; 6588 survey_idx++; 6589 } 6590 6591 out: 6592 cb->args[2] = survey_idx; 6593 res = skb->len; 6594 out_err: 6595 nl80211_finish_wdev_dump(rdev); 6596 return res; 6597 } 6598 6599 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 6600 { 6601 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 6602 NL80211_WPA_VERSION_2)); 6603 } 6604 6605 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 6606 { 6607 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6608 struct net_device *dev = info->user_ptr[1]; 6609 struct ieee80211_channel *chan; 6610 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 6611 int err, ssid_len, ie_len = 0, sae_data_len = 0; 6612 enum nl80211_auth_type auth_type; 6613 struct key_parse key; 6614 bool local_state_change; 6615 6616 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6617 return -EINVAL; 6618 6619 if (!info->attrs[NL80211_ATTR_MAC]) 6620 return -EINVAL; 6621 6622 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 6623 return -EINVAL; 6624 6625 if (!info->attrs[NL80211_ATTR_SSID]) 6626 return -EINVAL; 6627 6628 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6629 return -EINVAL; 6630 6631 err = nl80211_parse_key(info, &key); 6632 if (err) 6633 return err; 6634 6635 if (key.idx >= 0) { 6636 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 6637 return -EINVAL; 6638 if (!key.p.key || !key.p.key_len) 6639 return -EINVAL; 6640 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 6641 key.p.key_len != WLAN_KEY_LEN_WEP40) && 6642 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 6643 key.p.key_len != WLAN_KEY_LEN_WEP104)) 6644 return -EINVAL; 6645 if (key.idx > 4) 6646 return -EINVAL; 6647 } else { 6648 key.p.key_len = 0; 6649 key.p.key = NULL; 6650 } 6651 6652 if (key.idx >= 0) { 6653 int i; 6654 bool ok = false; 6655 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 6656 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 6657 ok = true; 6658 break; 6659 } 6660 } 6661 if (!ok) 6662 return -EINVAL; 6663 } 6664 6665 if (!rdev->ops->auth) 6666 return -EOPNOTSUPP; 6667 6668 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6669 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6670 return -EOPNOTSUPP; 6671 6672 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6673 chan = nl80211_get_valid_chan(&rdev->wiphy, 6674 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6675 if (!chan) 6676 return -EINVAL; 6677 6678 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6679 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6680 6681 if (info->attrs[NL80211_ATTR_IE]) { 6682 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6683 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6684 } 6685 6686 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 6687 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 6688 return -EINVAL; 6689 6690 if (auth_type == NL80211_AUTHTYPE_SAE && 6691 !info->attrs[NL80211_ATTR_SAE_DATA]) 6692 return -EINVAL; 6693 6694 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 6695 if (auth_type != NL80211_AUTHTYPE_SAE) 6696 return -EINVAL; 6697 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 6698 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 6699 /* need to include at least Auth Transaction and Status Code */ 6700 if (sae_data_len < 4) 6701 return -EINVAL; 6702 } 6703 6704 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6705 6706 /* 6707 * Since we no longer track auth state, ignore 6708 * requests to only change local state. 6709 */ 6710 if (local_state_change) 6711 return 0; 6712 6713 wdev_lock(dev->ieee80211_ptr); 6714 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 6715 ssid, ssid_len, ie, ie_len, 6716 key.p.key, key.p.key_len, key.idx, 6717 sae_data, sae_data_len); 6718 wdev_unlock(dev->ieee80211_ptr); 6719 return err; 6720 } 6721 6722 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 6723 struct genl_info *info, 6724 struct cfg80211_crypto_settings *settings, 6725 int cipher_limit) 6726 { 6727 memset(settings, 0, sizeof(*settings)); 6728 6729 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 6730 6731 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 6732 u16 proto; 6733 proto = nla_get_u16( 6734 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 6735 settings->control_port_ethertype = cpu_to_be16(proto); 6736 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 6737 proto != ETH_P_PAE) 6738 return -EINVAL; 6739 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 6740 settings->control_port_no_encrypt = true; 6741 } else 6742 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 6743 6744 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 6745 void *data; 6746 int len, i; 6747 6748 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6749 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 6750 settings->n_ciphers_pairwise = len / sizeof(u32); 6751 6752 if (len % sizeof(u32)) 6753 return -EINVAL; 6754 6755 if (settings->n_ciphers_pairwise > cipher_limit) 6756 return -EINVAL; 6757 6758 memcpy(settings->ciphers_pairwise, data, len); 6759 6760 for (i = 0; i < settings->n_ciphers_pairwise; i++) 6761 if (!cfg80211_supported_cipher_suite( 6762 &rdev->wiphy, 6763 settings->ciphers_pairwise[i])) 6764 return -EINVAL; 6765 } 6766 6767 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 6768 settings->cipher_group = 6769 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 6770 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 6771 settings->cipher_group)) 6772 return -EINVAL; 6773 } 6774 6775 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 6776 settings->wpa_versions = 6777 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 6778 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 6779 return -EINVAL; 6780 } 6781 6782 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 6783 void *data; 6784 int len; 6785 6786 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 6787 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 6788 settings->n_akm_suites = len / sizeof(u32); 6789 6790 if (len % sizeof(u32)) 6791 return -EINVAL; 6792 6793 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 6794 return -EINVAL; 6795 6796 memcpy(settings->akm_suites, data, len); 6797 } 6798 6799 return 0; 6800 } 6801 6802 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 6803 { 6804 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6805 struct net_device *dev = info->user_ptr[1]; 6806 struct ieee80211_channel *chan; 6807 struct cfg80211_assoc_request req = {}; 6808 const u8 *bssid, *ssid; 6809 int err, ssid_len = 0; 6810 6811 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6812 return -EINVAL; 6813 6814 if (!info->attrs[NL80211_ATTR_MAC] || 6815 !info->attrs[NL80211_ATTR_SSID] || 6816 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 6817 return -EINVAL; 6818 6819 if (!rdev->ops->assoc) 6820 return -EOPNOTSUPP; 6821 6822 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6823 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6824 return -EOPNOTSUPP; 6825 6826 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6827 6828 chan = nl80211_get_valid_chan(&rdev->wiphy, 6829 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 6830 if (!chan) 6831 return -EINVAL; 6832 6833 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 6834 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 6835 6836 if (info->attrs[NL80211_ATTR_IE]) { 6837 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6838 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6839 } 6840 6841 if (info->attrs[NL80211_ATTR_USE_MFP]) { 6842 enum nl80211_mfp mfp = 6843 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 6844 if (mfp == NL80211_MFP_REQUIRED) 6845 req.use_mfp = true; 6846 else if (mfp != NL80211_MFP_NO) 6847 return -EINVAL; 6848 } 6849 6850 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 6851 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 6852 6853 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 6854 req.flags |= ASSOC_REQ_DISABLE_HT; 6855 6856 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6857 memcpy(&req.ht_capa_mask, 6858 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 6859 sizeof(req.ht_capa_mask)); 6860 6861 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 6862 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 6863 return -EINVAL; 6864 memcpy(&req.ht_capa, 6865 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 6866 sizeof(req.ht_capa)); 6867 } 6868 6869 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 6870 req.flags |= ASSOC_REQ_DISABLE_VHT; 6871 6872 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6873 memcpy(&req.vht_capa_mask, 6874 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 6875 sizeof(req.vht_capa_mask)); 6876 6877 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 6878 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 6879 return -EINVAL; 6880 memcpy(&req.vht_capa, 6881 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 6882 sizeof(req.vht_capa)); 6883 } 6884 6885 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 6886 if (!(rdev->wiphy.features & 6887 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 6888 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 6889 return -EINVAL; 6890 req.flags |= ASSOC_REQ_USE_RRM; 6891 } 6892 6893 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 6894 if (!err) { 6895 wdev_lock(dev->ieee80211_ptr); 6896 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 6897 ssid, ssid_len, &req); 6898 wdev_unlock(dev->ieee80211_ptr); 6899 } 6900 6901 return err; 6902 } 6903 6904 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 6905 { 6906 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6907 struct net_device *dev = info->user_ptr[1]; 6908 const u8 *ie = NULL, *bssid; 6909 int ie_len = 0, err; 6910 u16 reason_code; 6911 bool local_state_change; 6912 6913 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6914 return -EINVAL; 6915 6916 if (!info->attrs[NL80211_ATTR_MAC]) 6917 return -EINVAL; 6918 6919 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6920 return -EINVAL; 6921 6922 if (!rdev->ops->deauth) 6923 return -EOPNOTSUPP; 6924 6925 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6926 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6927 return -EOPNOTSUPP; 6928 6929 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6930 6931 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6932 if (reason_code == 0) { 6933 /* Reason Code 0 is reserved */ 6934 return -EINVAL; 6935 } 6936 6937 if (info->attrs[NL80211_ATTR_IE]) { 6938 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6939 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6940 } 6941 6942 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6943 6944 wdev_lock(dev->ieee80211_ptr); 6945 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 6946 local_state_change); 6947 wdev_unlock(dev->ieee80211_ptr); 6948 return err; 6949 } 6950 6951 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 6952 { 6953 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6954 struct net_device *dev = info->user_ptr[1]; 6955 const u8 *ie = NULL, *bssid; 6956 int ie_len = 0, err; 6957 u16 reason_code; 6958 bool local_state_change; 6959 6960 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6961 return -EINVAL; 6962 6963 if (!info->attrs[NL80211_ATTR_MAC]) 6964 return -EINVAL; 6965 6966 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 6967 return -EINVAL; 6968 6969 if (!rdev->ops->disassoc) 6970 return -EOPNOTSUPP; 6971 6972 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 6973 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 6974 return -EOPNOTSUPP; 6975 6976 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 6977 6978 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 6979 if (reason_code == 0) { 6980 /* Reason Code 0 is reserved */ 6981 return -EINVAL; 6982 } 6983 6984 if (info->attrs[NL80211_ATTR_IE]) { 6985 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 6986 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6987 } 6988 6989 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 6990 6991 wdev_lock(dev->ieee80211_ptr); 6992 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 6993 local_state_change); 6994 wdev_unlock(dev->ieee80211_ptr); 6995 return err; 6996 } 6997 6998 static bool 6999 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7000 int mcast_rate[IEEE80211_NUM_BANDS], 7001 int rateval) 7002 { 7003 struct wiphy *wiphy = &rdev->wiphy; 7004 bool found = false; 7005 int band, i; 7006 7007 for (band = 0; band < IEEE80211_NUM_BANDS; band++) { 7008 struct ieee80211_supported_band *sband; 7009 7010 sband = wiphy->bands[band]; 7011 if (!sband) 7012 continue; 7013 7014 for (i = 0; i < sband->n_bitrates; i++) { 7015 if (sband->bitrates[i].bitrate == rateval) { 7016 mcast_rate[band] = i + 1; 7017 found = true; 7018 break; 7019 } 7020 } 7021 } 7022 7023 return found; 7024 } 7025 7026 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7027 { 7028 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7029 struct net_device *dev = info->user_ptr[1]; 7030 struct cfg80211_ibss_params ibss; 7031 struct wiphy *wiphy; 7032 struct cfg80211_cached_keys *connkeys = NULL; 7033 int err; 7034 7035 memset(&ibss, 0, sizeof(ibss)); 7036 7037 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7038 return -EINVAL; 7039 7040 if (!info->attrs[NL80211_ATTR_SSID] || 7041 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7042 return -EINVAL; 7043 7044 ibss.beacon_interval = 100; 7045 7046 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7047 ibss.beacon_interval = 7048 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7049 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7050 return -EINVAL; 7051 } 7052 7053 if (!rdev->ops->join_ibss) 7054 return -EOPNOTSUPP; 7055 7056 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7057 return -EOPNOTSUPP; 7058 7059 wiphy = &rdev->wiphy; 7060 7061 if (info->attrs[NL80211_ATTR_MAC]) { 7062 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7063 7064 if (!is_valid_ether_addr(ibss.bssid)) 7065 return -EINVAL; 7066 } 7067 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7068 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7069 7070 if (info->attrs[NL80211_ATTR_IE]) { 7071 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7072 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7073 } 7074 7075 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7076 if (err) 7077 return err; 7078 7079 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7080 NL80211_IFTYPE_ADHOC)) 7081 return -EINVAL; 7082 7083 switch (ibss.chandef.width) { 7084 case NL80211_CHAN_WIDTH_5: 7085 case NL80211_CHAN_WIDTH_10: 7086 case NL80211_CHAN_WIDTH_20_NOHT: 7087 break; 7088 case NL80211_CHAN_WIDTH_20: 7089 case NL80211_CHAN_WIDTH_40: 7090 if (rdev->wiphy.features & NL80211_FEATURE_HT_IBSS) 7091 break; 7092 default: 7093 return -EINVAL; 7094 } 7095 7096 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7097 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7098 7099 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7100 u8 *rates = 7101 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7102 int n_rates = 7103 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7104 struct ieee80211_supported_band *sband = 7105 wiphy->bands[ibss.chandef.chan->band]; 7106 7107 err = ieee80211_get_ratemask(sband, rates, n_rates, 7108 &ibss.basic_rates); 7109 if (err) 7110 return err; 7111 } 7112 7113 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7114 memcpy(&ibss.ht_capa_mask, 7115 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7116 sizeof(ibss.ht_capa_mask)); 7117 7118 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7119 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7120 return -EINVAL; 7121 memcpy(&ibss.ht_capa, 7122 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7123 sizeof(ibss.ht_capa)); 7124 } 7125 7126 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7127 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7128 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7129 return -EINVAL; 7130 7131 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7132 bool no_ht = false; 7133 7134 connkeys = nl80211_parse_connkeys(rdev, 7135 info->attrs[NL80211_ATTR_KEYS], 7136 &no_ht); 7137 if (IS_ERR(connkeys)) 7138 return PTR_ERR(connkeys); 7139 7140 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7141 no_ht) { 7142 kfree(connkeys); 7143 return -EINVAL; 7144 } 7145 } 7146 7147 ibss.control_port = 7148 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7149 7150 ibss.userspace_handles_dfs = 7151 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7152 7153 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7154 if (err) 7155 kzfree(connkeys); 7156 return err; 7157 } 7158 7159 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7160 { 7161 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7162 struct net_device *dev = info->user_ptr[1]; 7163 7164 if (!rdev->ops->leave_ibss) 7165 return -EOPNOTSUPP; 7166 7167 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7168 return -EOPNOTSUPP; 7169 7170 return cfg80211_leave_ibss(rdev, dev, false); 7171 } 7172 7173 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7174 { 7175 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7176 struct net_device *dev = info->user_ptr[1]; 7177 int mcast_rate[IEEE80211_NUM_BANDS]; 7178 u32 nla_rate; 7179 int err; 7180 7181 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7182 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 7183 return -EOPNOTSUPP; 7184 7185 if (!rdev->ops->set_mcast_rate) 7186 return -EOPNOTSUPP; 7187 7188 memset(mcast_rate, 0, sizeof(mcast_rate)); 7189 7190 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7191 return -EINVAL; 7192 7193 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7194 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7195 return -EINVAL; 7196 7197 err = rdev->ops->set_mcast_rate(&rdev->wiphy, dev, mcast_rate); 7198 7199 return err; 7200 } 7201 7202 static struct sk_buff * 7203 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7204 int approxlen, u32 portid, u32 seq, 7205 enum nl80211_commands cmd, 7206 enum nl80211_attrs attr, 7207 const struct nl80211_vendor_cmd_info *info, 7208 gfp_t gfp) 7209 { 7210 struct sk_buff *skb; 7211 void *hdr; 7212 struct nlattr *data; 7213 7214 skb = nlmsg_new(approxlen + 100, gfp); 7215 if (!skb) 7216 return NULL; 7217 7218 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7219 if (!hdr) { 7220 kfree_skb(skb); 7221 return NULL; 7222 } 7223 7224 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7225 goto nla_put_failure; 7226 7227 if (info) { 7228 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7229 info->vendor_id)) 7230 goto nla_put_failure; 7231 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7232 info->subcmd)) 7233 goto nla_put_failure; 7234 } 7235 7236 data = nla_nest_start(skb, attr); 7237 7238 ((void **)skb->cb)[0] = rdev; 7239 ((void **)skb->cb)[1] = hdr; 7240 ((void **)skb->cb)[2] = data; 7241 7242 return skb; 7243 7244 nla_put_failure: 7245 kfree_skb(skb); 7246 return NULL; 7247 } 7248 7249 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7250 enum nl80211_commands cmd, 7251 enum nl80211_attrs attr, 7252 int vendor_event_idx, 7253 int approxlen, gfp_t gfp) 7254 { 7255 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7256 const struct nl80211_vendor_cmd_info *info; 7257 7258 switch (cmd) { 7259 case NL80211_CMD_TESTMODE: 7260 if (WARN_ON(vendor_event_idx != -1)) 7261 return NULL; 7262 info = NULL; 7263 break; 7264 case NL80211_CMD_VENDOR: 7265 if (WARN_ON(vendor_event_idx < 0 || 7266 vendor_event_idx >= wiphy->n_vendor_events)) 7267 return NULL; 7268 info = &wiphy->vendor_events[vendor_event_idx]; 7269 break; 7270 default: 7271 WARN_ON(1); 7272 return NULL; 7273 } 7274 7275 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 0, 0, 7276 cmd, attr, info, gfp); 7277 } 7278 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 7279 7280 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 7281 { 7282 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 7283 void *hdr = ((void **)skb->cb)[1]; 7284 struct nlattr *data = ((void **)skb->cb)[2]; 7285 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 7286 7287 /* clear CB data for netlink core to own from now on */ 7288 memset(skb->cb, 0, sizeof(skb->cb)); 7289 7290 nla_nest_end(skb, data); 7291 genlmsg_end(skb, hdr); 7292 7293 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 7294 mcgrp = NL80211_MCGRP_VENDOR; 7295 7296 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 7297 mcgrp, gfp); 7298 } 7299 EXPORT_SYMBOL(__cfg80211_send_event_skb); 7300 7301 #ifdef CONFIG_NL80211_TESTMODE 7302 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 7303 { 7304 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7305 struct wireless_dev *wdev = 7306 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 7307 int err; 7308 7309 if (!rdev->ops->testmode_cmd) 7310 return -EOPNOTSUPP; 7311 7312 if (IS_ERR(wdev)) { 7313 err = PTR_ERR(wdev); 7314 if (err != -EINVAL) 7315 return err; 7316 wdev = NULL; 7317 } else if (wdev->wiphy != &rdev->wiphy) { 7318 return -EINVAL; 7319 } 7320 7321 if (!info->attrs[NL80211_ATTR_TESTDATA]) 7322 return -EINVAL; 7323 7324 rdev->cur_cmd_info = info; 7325 err = rdev_testmode_cmd(rdev, wdev, 7326 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 7327 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 7328 rdev->cur_cmd_info = NULL; 7329 7330 return err; 7331 } 7332 7333 static int nl80211_testmode_dump(struct sk_buff *skb, 7334 struct netlink_callback *cb) 7335 { 7336 struct cfg80211_registered_device *rdev; 7337 int err; 7338 long phy_idx; 7339 void *data = NULL; 7340 int data_len = 0; 7341 7342 rtnl_lock(); 7343 7344 if (cb->args[0]) { 7345 /* 7346 * 0 is a valid index, but not valid for args[0], 7347 * so we need to offset by 1. 7348 */ 7349 phy_idx = cb->args[0] - 1; 7350 } else { 7351 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 7352 nl80211_fam.attrbuf, nl80211_fam.maxattr, 7353 nl80211_policy); 7354 if (err) 7355 goto out_err; 7356 7357 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 7358 nl80211_fam.attrbuf); 7359 if (IS_ERR(rdev)) { 7360 err = PTR_ERR(rdev); 7361 goto out_err; 7362 } 7363 phy_idx = rdev->wiphy_idx; 7364 rdev = NULL; 7365 7366 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 7367 cb->args[1] = 7368 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 7369 } 7370 7371 if (cb->args[1]) { 7372 data = nla_data((void *)cb->args[1]); 7373 data_len = nla_len((void *)cb->args[1]); 7374 } 7375 7376 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 7377 if (!rdev) { 7378 err = -ENOENT; 7379 goto out_err; 7380 } 7381 7382 if (!rdev->ops->testmode_dump) { 7383 err = -EOPNOTSUPP; 7384 goto out_err; 7385 } 7386 7387 while (1) { 7388 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 7389 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7390 NL80211_CMD_TESTMODE); 7391 struct nlattr *tmdata; 7392 7393 if (!hdr) 7394 break; 7395 7396 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 7397 genlmsg_cancel(skb, hdr); 7398 break; 7399 } 7400 7401 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 7402 if (!tmdata) { 7403 genlmsg_cancel(skb, hdr); 7404 break; 7405 } 7406 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 7407 nla_nest_end(skb, tmdata); 7408 7409 if (err == -ENOBUFS || err == -ENOENT) { 7410 genlmsg_cancel(skb, hdr); 7411 break; 7412 } else if (err) { 7413 genlmsg_cancel(skb, hdr); 7414 goto out_err; 7415 } 7416 7417 genlmsg_end(skb, hdr); 7418 } 7419 7420 err = skb->len; 7421 /* see above */ 7422 cb->args[0] = phy_idx + 1; 7423 out_err: 7424 rtnl_unlock(); 7425 return err; 7426 } 7427 #endif 7428 7429 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 7430 { 7431 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7432 struct net_device *dev = info->user_ptr[1]; 7433 struct cfg80211_connect_params connect; 7434 struct wiphy *wiphy; 7435 struct cfg80211_cached_keys *connkeys = NULL; 7436 int err; 7437 7438 memset(&connect, 0, sizeof(connect)); 7439 7440 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7441 return -EINVAL; 7442 7443 if (!info->attrs[NL80211_ATTR_SSID] || 7444 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7445 return -EINVAL; 7446 7447 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 7448 connect.auth_type = 7449 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7450 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 7451 NL80211_CMD_CONNECT)) 7452 return -EINVAL; 7453 } else 7454 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 7455 7456 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 7457 7458 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 7459 NL80211_MAX_NR_CIPHER_SUITES); 7460 if (err) 7461 return err; 7462 7463 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7464 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7465 return -EOPNOTSUPP; 7466 7467 wiphy = &rdev->wiphy; 7468 7469 connect.bg_scan_period = -1; 7470 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 7471 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 7472 connect.bg_scan_period = 7473 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 7474 } 7475 7476 if (info->attrs[NL80211_ATTR_MAC]) 7477 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7478 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 7479 connect.bssid_hint = 7480 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 7481 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7482 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7483 7484 if (info->attrs[NL80211_ATTR_IE]) { 7485 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7486 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7487 } 7488 7489 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7490 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7491 if (connect.mfp != NL80211_MFP_REQUIRED && 7492 connect.mfp != NL80211_MFP_NO) 7493 return -EINVAL; 7494 } else { 7495 connect.mfp = NL80211_MFP_NO; 7496 } 7497 7498 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 7499 connect.channel = nl80211_get_valid_chan( 7500 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7501 if (!connect.channel) 7502 return -EINVAL; 7503 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 7504 connect.channel_hint = nl80211_get_valid_chan( 7505 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 7506 if (!connect.channel_hint) 7507 return -EINVAL; 7508 } 7509 7510 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7511 connkeys = nl80211_parse_connkeys(rdev, 7512 info->attrs[NL80211_ATTR_KEYS], NULL); 7513 if (IS_ERR(connkeys)) 7514 return PTR_ERR(connkeys); 7515 } 7516 7517 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7518 connect.flags |= ASSOC_REQ_DISABLE_HT; 7519 7520 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7521 memcpy(&connect.ht_capa_mask, 7522 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7523 sizeof(connect.ht_capa_mask)); 7524 7525 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7526 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 7527 kzfree(connkeys); 7528 return -EINVAL; 7529 } 7530 memcpy(&connect.ht_capa, 7531 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7532 sizeof(connect.ht_capa)); 7533 } 7534 7535 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7536 connect.flags |= ASSOC_REQ_DISABLE_VHT; 7537 7538 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7539 memcpy(&connect.vht_capa_mask, 7540 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7541 sizeof(connect.vht_capa_mask)); 7542 7543 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7544 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 7545 kzfree(connkeys); 7546 return -EINVAL; 7547 } 7548 memcpy(&connect.vht_capa, 7549 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7550 sizeof(connect.vht_capa)); 7551 } 7552 7553 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7554 if (!(rdev->wiphy.features & 7555 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) || 7556 !(rdev->wiphy.features & NL80211_FEATURE_QUIET)) 7557 return -EINVAL; 7558 connect.flags |= ASSOC_REQ_USE_RRM; 7559 } 7560 7561 wdev_lock(dev->ieee80211_ptr); 7562 err = cfg80211_connect(rdev, dev, &connect, connkeys, NULL); 7563 wdev_unlock(dev->ieee80211_ptr); 7564 if (err) 7565 kzfree(connkeys); 7566 return err; 7567 } 7568 7569 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 7570 { 7571 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7572 struct net_device *dev = info->user_ptr[1]; 7573 u16 reason; 7574 int ret; 7575 7576 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7577 reason = WLAN_REASON_DEAUTH_LEAVING; 7578 else 7579 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7580 7581 if (reason == 0) 7582 return -EINVAL; 7583 7584 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7585 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7586 return -EOPNOTSUPP; 7587 7588 wdev_lock(dev->ieee80211_ptr); 7589 ret = cfg80211_disconnect(rdev, dev, reason, true); 7590 wdev_unlock(dev->ieee80211_ptr); 7591 return ret; 7592 } 7593 7594 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 7595 { 7596 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7597 struct net *net; 7598 int err; 7599 u32 pid; 7600 7601 if (!info->attrs[NL80211_ATTR_PID]) 7602 return -EINVAL; 7603 7604 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 7605 7606 net = get_net_ns_by_pid(pid); 7607 if (IS_ERR(net)) 7608 return PTR_ERR(net); 7609 7610 err = 0; 7611 7612 /* check if anything to do */ 7613 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 7614 err = cfg80211_switch_netns(rdev, net); 7615 7616 put_net(net); 7617 return err; 7618 } 7619 7620 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 7621 { 7622 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7623 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 7624 struct cfg80211_pmksa *pmksa) = NULL; 7625 struct net_device *dev = info->user_ptr[1]; 7626 struct cfg80211_pmksa pmksa; 7627 7628 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 7629 7630 if (!info->attrs[NL80211_ATTR_MAC]) 7631 return -EINVAL; 7632 7633 if (!info->attrs[NL80211_ATTR_PMKID]) 7634 return -EINVAL; 7635 7636 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 7637 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7638 7639 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7640 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7641 return -EOPNOTSUPP; 7642 7643 switch (info->genlhdr->cmd) { 7644 case NL80211_CMD_SET_PMKSA: 7645 rdev_ops = rdev->ops->set_pmksa; 7646 break; 7647 case NL80211_CMD_DEL_PMKSA: 7648 rdev_ops = rdev->ops->del_pmksa; 7649 break; 7650 default: 7651 WARN_ON(1); 7652 break; 7653 } 7654 7655 if (!rdev_ops) 7656 return -EOPNOTSUPP; 7657 7658 return rdev_ops(&rdev->wiphy, dev, &pmksa); 7659 } 7660 7661 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 7662 { 7663 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7664 struct net_device *dev = info->user_ptr[1]; 7665 7666 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7667 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7668 return -EOPNOTSUPP; 7669 7670 if (!rdev->ops->flush_pmksa) 7671 return -EOPNOTSUPP; 7672 7673 return rdev_flush_pmksa(rdev, dev); 7674 } 7675 7676 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 7677 { 7678 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7679 struct net_device *dev = info->user_ptr[1]; 7680 u8 action_code, dialog_token; 7681 u32 peer_capability = 0; 7682 u16 status_code; 7683 u8 *peer; 7684 bool initiator; 7685 7686 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7687 !rdev->ops->tdls_mgmt) 7688 return -EOPNOTSUPP; 7689 7690 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 7691 !info->attrs[NL80211_ATTR_STATUS_CODE] || 7692 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 7693 !info->attrs[NL80211_ATTR_IE] || 7694 !info->attrs[NL80211_ATTR_MAC]) 7695 return -EINVAL; 7696 7697 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7698 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 7699 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 7700 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 7701 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 7702 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 7703 peer_capability = 7704 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 7705 7706 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 7707 dialog_token, status_code, peer_capability, 7708 initiator, 7709 nla_data(info->attrs[NL80211_ATTR_IE]), 7710 nla_len(info->attrs[NL80211_ATTR_IE])); 7711 } 7712 7713 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 7714 { 7715 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7716 struct net_device *dev = info->user_ptr[1]; 7717 enum nl80211_tdls_operation operation; 7718 u8 *peer; 7719 7720 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 7721 !rdev->ops->tdls_oper) 7722 return -EOPNOTSUPP; 7723 7724 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 7725 !info->attrs[NL80211_ATTR_MAC]) 7726 return -EINVAL; 7727 7728 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 7729 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 7730 7731 return rdev_tdls_oper(rdev, dev, peer, operation); 7732 } 7733 7734 static int nl80211_remain_on_channel(struct sk_buff *skb, 7735 struct genl_info *info) 7736 { 7737 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7738 struct wireless_dev *wdev = info->user_ptr[1]; 7739 struct cfg80211_chan_def chandef; 7740 struct sk_buff *msg; 7741 void *hdr; 7742 u64 cookie; 7743 u32 duration; 7744 int err; 7745 7746 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 7747 !info->attrs[NL80211_ATTR_DURATION]) 7748 return -EINVAL; 7749 7750 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 7751 7752 if (!rdev->ops->remain_on_channel || 7753 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 7754 return -EOPNOTSUPP; 7755 7756 /* 7757 * We should be on that channel for at least a minimum amount of 7758 * time (10ms) but no longer than the driver supports. 7759 */ 7760 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 7761 duration > rdev->wiphy.max_remain_on_channel_duration) 7762 return -EINVAL; 7763 7764 err = nl80211_parse_chandef(rdev, info, &chandef); 7765 if (err) 7766 return err; 7767 7768 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 7769 if (!msg) 7770 return -ENOMEM; 7771 7772 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 7773 NL80211_CMD_REMAIN_ON_CHANNEL); 7774 if (!hdr) { 7775 err = -ENOBUFS; 7776 goto free_msg; 7777 } 7778 7779 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 7780 duration, &cookie); 7781 7782 if (err) 7783 goto free_msg; 7784 7785 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 7786 goto nla_put_failure; 7787 7788 genlmsg_end(msg, hdr); 7789 7790 return genlmsg_reply(msg, info); 7791 7792 nla_put_failure: 7793 err = -ENOBUFS; 7794 free_msg: 7795 nlmsg_free(msg); 7796 return err; 7797 } 7798 7799 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 7800 struct genl_info *info) 7801 { 7802 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7803 struct wireless_dev *wdev = info->user_ptr[1]; 7804 u64 cookie; 7805 7806 if (!info->attrs[NL80211_ATTR_COOKIE]) 7807 return -EINVAL; 7808 7809 if (!rdev->ops->cancel_remain_on_channel) 7810 return -EOPNOTSUPP; 7811 7812 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 7813 7814 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 7815 } 7816 7817 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 7818 u8 *rates, u8 rates_len) 7819 { 7820 u8 i; 7821 u32 mask = 0; 7822 7823 for (i = 0; i < rates_len; i++) { 7824 int rate = (rates[i] & 0x7f) * 5; 7825 int ridx; 7826 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 7827 struct ieee80211_rate *srate = 7828 &sband->bitrates[ridx]; 7829 if (rate == srate->bitrate) { 7830 mask |= 1 << ridx; 7831 break; 7832 } 7833 } 7834 if (ridx == sband->n_bitrates) 7835 return 0; /* rate not found */ 7836 } 7837 7838 return mask; 7839 } 7840 7841 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 7842 u8 *rates, u8 rates_len, 7843 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 7844 { 7845 u8 i; 7846 7847 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 7848 7849 for (i = 0; i < rates_len; i++) { 7850 int ridx, rbit; 7851 7852 ridx = rates[i] / 8; 7853 rbit = BIT(rates[i] % 8); 7854 7855 /* check validity */ 7856 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 7857 return false; 7858 7859 /* check availability */ 7860 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 7861 mcs[ridx] |= rbit; 7862 else 7863 return false; 7864 } 7865 7866 return true; 7867 } 7868 7869 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 7870 { 7871 u16 mcs_mask = 0; 7872 7873 switch (vht_mcs_map) { 7874 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 7875 break; 7876 case IEEE80211_VHT_MCS_SUPPORT_0_7: 7877 mcs_mask = 0x00FF; 7878 break; 7879 case IEEE80211_VHT_MCS_SUPPORT_0_8: 7880 mcs_mask = 0x01FF; 7881 break; 7882 case IEEE80211_VHT_MCS_SUPPORT_0_9: 7883 mcs_mask = 0x03FF; 7884 break; 7885 default: 7886 break; 7887 } 7888 7889 return mcs_mask; 7890 } 7891 7892 static void vht_build_mcs_mask(u16 vht_mcs_map, 7893 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 7894 { 7895 u8 nss; 7896 7897 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 7898 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 7899 vht_mcs_map >>= 2; 7900 } 7901 } 7902 7903 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 7904 struct nl80211_txrate_vht *txrate, 7905 u16 mcs[NL80211_VHT_NSS_MAX]) 7906 { 7907 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 7908 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 7909 u8 i; 7910 7911 if (!sband->vht_cap.vht_supported) 7912 return false; 7913 7914 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 7915 7916 /* Build vht_mcs_mask from VHT capabilities */ 7917 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 7918 7919 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 7920 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 7921 mcs[i] = txrate->mcs[i]; 7922 else 7923 return false; 7924 } 7925 7926 return true; 7927 } 7928 7929 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 7930 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 7931 .len = NL80211_MAX_SUPP_RATES }, 7932 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 7933 .len = NL80211_MAX_SUPP_HT_RATES }, 7934 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 7935 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 7936 }; 7937 7938 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 7939 struct genl_info *info) 7940 { 7941 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 7942 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7943 struct cfg80211_bitrate_mask mask; 7944 int rem, i; 7945 struct net_device *dev = info->user_ptr[1]; 7946 struct nlattr *tx_rates; 7947 struct ieee80211_supported_band *sband; 7948 u16 vht_tx_mcs_map; 7949 7950 if (!rdev->ops->set_bitrate_mask) 7951 return -EOPNOTSUPP; 7952 7953 memset(&mask, 0, sizeof(mask)); 7954 /* Default to all rates enabled */ 7955 for (i = 0; i < IEEE80211_NUM_BANDS; i++) { 7956 sband = rdev->wiphy.bands[i]; 7957 7958 if (!sband) 7959 continue; 7960 7961 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 7962 memcpy(mask.control[i].ht_mcs, 7963 sband->ht_cap.mcs.rx_mask, 7964 sizeof(mask.control[i].ht_mcs)); 7965 7966 if (!sband->vht_cap.vht_supported) 7967 continue; 7968 7969 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 7970 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 7971 } 7972 7973 /* if no rates are given set it back to the defaults */ 7974 if (!info->attrs[NL80211_ATTR_TX_RATES]) 7975 goto out; 7976 7977 /* 7978 * The nested attribute uses enum nl80211_band as the index. This maps 7979 * directly to the enum ieee80211_band values used in cfg80211. 7980 */ 7981 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 7982 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 7983 enum ieee80211_band band = nla_type(tx_rates); 7984 int err; 7985 7986 if (band < 0 || band >= IEEE80211_NUM_BANDS) 7987 return -EINVAL; 7988 sband = rdev->wiphy.bands[band]; 7989 if (sband == NULL) 7990 return -EINVAL; 7991 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 7992 nla_len(tx_rates), nl80211_txattr_policy); 7993 if (err) 7994 return err; 7995 if (tb[NL80211_TXRATE_LEGACY]) { 7996 mask.control[band].legacy = rateset_to_mask( 7997 sband, 7998 nla_data(tb[NL80211_TXRATE_LEGACY]), 7999 nla_len(tb[NL80211_TXRATE_LEGACY])); 8000 if ((mask.control[band].legacy == 0) && 8001 nla_len(tb[NL80211_TXRATE_LEGACY])) 8002 return -EINVAL; 8003 } 8004 if (tb[NL80211_TXRATE_HT]) { 8005 if (!ht_rateset_to_mask( 8006 sband, 8007 nla_data(tb[NL80211_TXRATE_HT]), 8008 nla_len(tb[NL80211_TXRATE_HT]), 8009 mask.control[band].ht_mcs)) 8010 return -EINVAL; 8011 } 8012 if (tb[NL80211_TXRATE_VHT]) { 8013 if (!vht_set_mcs_mask( 8014 sband, 8015 nla_data(tb[NL80211_TXRATE_VHT]), 8016 mask.control[band].vht_mcs)) 8017 return -EINVAL; 8018 } 8019 if (tb[NL80211_TXRATE_GI]) { 8020 mask.control[band].gi = 8021 nla_get_u8(tb[NL80211_TXRATE_GI]); 8022 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8023 return -EINVAL; 8024 } 8025 8026 if (mask.control[band].legacy == 0) { 8027 /* don't allow empty legacy rates if HT or VHT 8028 * are not even supported. 8029 */ 8030 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8031 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8032 return -EINVAL; 8033 8034 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8035 if (mask.control[band].ht_mcs[i]) 8036 goto out; 8037 8038 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8039 if (mask.control[band].vht_mcs[i]) 8040 goto out; 8041 8042 /* legacy and mcs rates may not be both empty */ 8043 return -EINVAL; 8044 } 8045 } 8046 8047 out: 8048 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8049 } 8050 8051 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8052 { 8053 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8054 struct wireless_dev *wdev = info->user_ptr[1]; 8055 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8056 8057 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8058 return -EINVAL; 8059 8060 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8061 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8062 8063 switch (wdev->iftype) { 8064 case NL80211_IFTYPE_STATION: 8065 case NL80211_IFTYPE_ADHOC: 8066 case NL80211_IFTYPE_P2P_CLIENT: 8067 case NL80211_IFTYPE_AP: 8068 case NL80211_IFTYPE_AP_VLAN: 8069 case NL80211_IFTYPE_MESH_POINT: 8070 case NL80211_IFTYPE_P2P_GO: 8071 case NL80211_IFTYPE_P2P_DEVICE: 8072 break; 8073 default: 8074 return -EOPNOTSUPP; 8075 } 8076 8077 /* not much point in registering if we can't reply */ 8078 if (!rdev->ops->mgmt_tx) 8079 return -EOPNOTSUPP; 8080 8081 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8082 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8083 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8084 } 8085 8086 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8087 { 8088 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8089 struct wireless_dev *wdev = info->user_ptr[1]; 8090 struct cfg80211_chan_def chandef; 8091 int err; 8092 void *hdr = NULL; 8093 u64 cookie; 8094 struct sk_buff *msg = NULL; 8095 struct cfg80211_mgmt_tx_params params = { 8096 .dont_wait_for_ack = 8097 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8098 }; 8099 8100 if (!info->attrs[NL80211_ATTR_FRAME]) 8101 return -EINVAL; 8102 8103 if (!rdev->ops->mgmt_tx) 8104 return -EOPNOTSUPP; 8105 8106 switch (wdev->iftype) { 8107 case NL80211_IFTYPE_P2P_DEVICE: 8108 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8109 return -EINVAL; 8110 case NL80211_IFTYPE_STATION: 8111 case NL80211_IFTYPE_ADHOC: 8112 case NL80211_IFTYPE_P2P_CLIENT: 8113 case NL80211_IFTYPE_AP: 8114 case NL80211_IFTYPE_AP_VLAN: 8115 case NL80211_IFTYPE_MESH_POINT: 8116 case NL80211_IFTYPE_P2P_GO: 8117 break; 8118 default: 8119 return -EOPNOTSUPP; 8120 } 8121 8122 if (info->attrs[NL80211_ATTR_DURATION]) { 8123 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8124 return -EINVAL; 8125 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8126 8127 /* 8128 * We should wait on the channel for at least a minimum amount 8129 * of time (10ms) but no longer than the driver supports. 8130 */ 8131 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8132 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8133 return -EINVAL; 8134 8135 } 8136 8137 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8138 8139 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8140 return -EINVAL; 8141 8142 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8143 8144 /* get the channel if any has been specified, otherwise pass NULL to 8145 * the driver. The latter will use the current one 8146 */ 8147 chandef.chan = NULL; 8148 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8149 err = nl80211_parse_chandef(rdev, info, &chandef); 8150 if (err) 8151 return err; 8152 } 8153 8154 if (!chandef.chan && params.offchan) 8155 return -EINVAL; 8156 8157 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8158 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8159 8160 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8161 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8162 int i; 8163 8164 if (len % sizeof(u16)) 8165 return -EINVAL; 8166 8167 params.n_csa_offsets = len / sizeof(u16); 8168 params.csa_offsets = 8169 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8170 8171 /* check that all the offsets fit the frame */ 8172 for (i = 0; i < params.n_csa_offsets; i++) { 8173 if (params.csa_offsets[i] >= params.len) 8174 return -EINVAL; 8175 } 8176 } 8177 8178 if (!params.dont_wait_for_ack) { 8179 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8180 if (!msg) 8181 return -ENOMEM; 8182 8183 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8184 NL80211_CMD_FRAME); 8185 if (!hdr) { 8186 err = -ENOBUFS; 8187 goto free_msg; 8188 } 8189 } 8190 8191 params.chan = chandef.chan; 8192 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8193 if (err) 8194 goto free_msg; 8195 8196 if (msg) { 8197 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 8198 goto nla_put_failure; 8199 8200 genlmsg_end(msg, hdr); 8201 return genlmsg_reply(msg, info); 8202 } 8203 8204 return 0; 8205 8206 nla_put_failure: 8207 err = -ENOBUFS; 8208 free_msg: 8209 nlmsg_free(msg); 8210 return err; 8211 } 8212 8213 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8214 { 8215 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8216 struct wireless_dev *wdev = info->user_ptr[1]; 8217 u64 cookie; 8218 8219 if (!info->attrs[NL80211_ATTR_COOKIE]) 8220 return -EINVAL; 8221 8222 if (!rdev->ops->mgmt_tx_cancel_wait) 8223 return -EOPNOTSUPP; 8224 8225 switch (wdev->iftype) { 8226 case NL80211_IFTYPE_STATION: 8227 case NL80211_IFTYPE_ADHOC: 8228 case NL80211_IFTYPE_P2P_CLIENT: 8229 case NL80211_IFTYPE_AP: 8230 case NL80211_IFTYPE_AP_VLAN: 8231 case NL80211_IFTYPE_P2P_GO: 8232 case NL80211_IFTYPE_P2P_DEVICE: 8233 break; 8234 default: 8235 return -EOPNOTSUPP; 8236 } 8237 8238 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8239 8240 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 8241 } 8242 8243 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 8244 { 8245 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8246 struct wireless_dev *wdev; 8247 struct net_device *dev = info->user_ptr[1]; 8248 u8 ps_state; 8249 bool state; 8250 int err; 8251 8252 if (!info->attrs[NL80211_ATTR_PS_STATE]) 8253 return -EINVAL; 8254 8255 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 8256 8257 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 8258 return -EINVAL; 8259 8260 wdev = dev->ieee80211_ptr; 8261 8262 if (!rdev->ops->set_power_mgmt) 8263 return -EOPNOTSUPP; 8264 8265 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 8266 8267 if (state == wdev->ps) 8268 return 0; 8269 8270 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 8271 if (!err) 8272 wdev->ps = state; 8273 return err; 8274 } 8275 8276 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 8277 { 8278 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8279 enum nl80211_ps_state ps_state; 8280 struct wireless_dev *wdev; 8281 struct net_device *dev = info->user_ptr[1]; 8282 struct sk_buff *msg; 8283 void *hdr; 8284 int err; 8285 8286 wdev = dev->ieee80211_ptr; 8287 8288 if (!rdev->ops->set_power_mgmt) 8289 return -EOPNOTSUPP; 8290 8291 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8292 if (!msg) 8293 return -ENOMEM; 8294 8295 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8296 NL80211_CMD_GET_POWER_SAVE); 8297 if (!hdr) { 8298 err = -ENOBUFS; 8299 goto free_msg; 8300 } 8301 8302 if (wdev->ps) 8303 ps_state = NL80211_PS_ENABLED; 8304 else 8305 ps_state = NL80211_PS_DISABLED; 8306 8307 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 8308 goto nla_put_failure; 8309 8310 genlmsg_end(msg, hdr); 8311 return genlmsg_reply(msg, info); 8312 8313 nla_put_failure: 8314 err = -ENOBUFS; 8315 free_msg: 8316 nlmsg_free(msg); 8317 return err; 8318 } 8319 8320 static const struct nla_policy 8321 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 8322 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 8323 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 8324 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 8325 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 8326 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 8327 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 8328 }; 8329 8330 static int nl80211_set_cqm_txe(struct genl_info *info, 8331 u32 rate, u32 pkts, u32 intvl) 8332 { 8333 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8334 struct net_device *dev = info->user_ptr[1]; 8335 struct wireless_dev *wdev = dev->ieee80211_ptr; 8336 8337 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 8338 return -EINVAL; 8339 8340 if (!rdev->ops->set_cqm_txe_config) 8341 return -EOPNOTSUPP; 8342 8343 if (wdev->iftype != NL80211_IFTYPE_STATION && 8344 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8345 return -EOPNOTSUPP; 8346 8347 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 8348 } 8349 8350 static int nl80211_set_cqm_rssi(struct genl_info *info, 8351 s32 threshold, u32 hysteresis) 8352 { 8353 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8354 struct net_device *dev = info->user_ptr[1]; 8355 struct wireless_dev *wdev = dev->ieee80211_ptr; 8356 8357 if (threshold > 0) 8358 return -EINVAL; 8359 8360 /* disabling - hysteresis should also be zero then */ 8361 if (threshold == 0) 8362 hysteresis = 0; 8363 8364 if (!rdev->ops->set_cqm_rssi_config) 8365 return -EOPNOTSUPP; 8366 8367 if (wdev->iftype != NL80211_IFTYPE_STATION && 8368 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 8369 return -EOPNOTSUPP; 8370 8371 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 8372 } 8373 8374 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 8375 { 8376 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 8377 struct nlattr *cqm; 8378 int err; 8379 8380 cqm = info->attrs[NL80211_ATTR_CQM]; 8381 if (!cqm) 8382 return -EINVAL; 8383 8384 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 8385 nl80211_attr_cqm_policy); 8386 if (err) 8387 return err; 8388 8389 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 8390 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 8391 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 8392 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 8393 8394 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 8395 } 8396 8397 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 8398 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 8399 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 8400 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 8401 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 8402 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 8403 8404 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 8405 } 8406 8407 return -EINVAL; 8408 } 8409 8410 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 8411 { 8412 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8413 struct net_device *dev = info->user_ptr[1]; 8414 struct ocb_setup setup = {}; 8415 int err; 8416 8417 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8418 if (err) 8419 return err; 8420 8421 return cfg80211_join_ocb(rdev, dev, &setup); 8422 } 8423 8424 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 8425 { 8426 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8427 struct net_device *dev = info->user_ptr[1]; 8428 8429 return cfg80211_leave_ocb(rdev, dev); 8430 } 8431 8432 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 8433 { 8434 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8435 struct net_device *dev = info->user_ptr[1]; 8436 struct mesh_config cfg; 8437 struct mesh_setup setup; 8438 int err; 8439 8440 /* start with default */ 8441 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 8442 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 8443 8444 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 8445 /* and parse parameters if given */ 8446 err = nl80211_parse_mesh_config(info, &cfg, NULL); 8447 if (err) 8448 return err; 8449 } 8450 8451 if (!info->attrs[NL80211_ATTR_MESH_ID] || 8452 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 8453 return -EINVAL; 8454 8455 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 8456 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 8457 8458 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 8459 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 8460 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 8461 return -EINVAL; 8462 8463 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 8464 setup.beacon_interval = 8465 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 8466 if (setup.beacon_interval < 10 || 8467 setup.beacon_interval > 10000) 8468 return -EINVAL; 8469 } 8470 8471 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 8472 setup.dtim_period = 8473 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 8474 if (setup.dtim_period < 1 || setup.dtim_period > 100) 8475 return -EINVAL; 8476 } 8477 8478 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 8479 /* parse additional setup parameters if given */ 8480 err = nl80211_parse_mesh_setup(info, &setup); 8481 if (err) 8482 return err; 8483 } 8484 8485 if (setup.user_mpm) 8486 cfg.auto_open_plinks = false; 8487 8488 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8489 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 8490 if (err) 8491 return err; 8492 } else { 8493 /* cfg80211_join_mesh() will sort it out */ 8494 setup.chandef.chan = NULL; 8495 } 8496 8497 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 8498 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8499 int n_rates = 8500 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 8501 struct ieee80211_supported_band *sband; 8502 8503 if (!setup.chandef.chan) 8504 return -EINVAL; 8505 8506 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 8507 8508 err = ieee80211_get_ratemask(sband, rates, n_rates, 8509 &setup.basic_rates); 8510 if (err) 8511 return err; 8512 } 8513 8514 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 8515 } 8516 8517 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 8518 { 8519 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8520 struct net_device *dev = info->user_ptr[1]; 8521 8522 return cfg80211_leave_mesh(rdev, dev); 8523 } 8524 8525 #ifdef CONFIG_PM 8526 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 8527 struct cfg80211_registered_device *rdev) 8528 { 8529 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 8530 struct nlattr *nl_pats, *nl_pat; 8531 int i, pat_len; 8532 8533 if (!wowlan->n_patterns) 8534 return 0; 8535 8536 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 8537 if (!nl_pats) 8538 return -ENOBUFS; 8539 8540 for (i = 0; i < wowlan->n_patterns; i++) { 8541 nl_pat = nla_nest_start(msg, i + 1); 8542 if (!nl_pat) 8543 return -ENOBUFS; 8544 pat_len = wowlan->patterns[i].pattern_len; 8545 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 8546 wowlan->patterns[i].mask) || 8547 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 8548 wowlan->patterns[i].pattern) || 8549 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 8550 wowlan->patterns[i].pkt_offset)) 8551 return -ENOBUFS; 8552 nla_nest_end(msg, nl_pat); 8553 } 8554 nla_nest_end(msg, nl_pats); 8555 8556 return 0; 8557 } 8558 8559 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 8560 struct cfg80211_wowlan_tcp *tcp) 8561 { 8562 struct nlattr *nl_tcp; 8563 8564 if (!tcp) 8565 return 0; 8566 8567 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 8568 if (!nl_tcp) 8569 return -ENOBUFS; 8570 8571 if (nla_put_be32(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 8572 nla_put_be32(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 8573 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 8574 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 8575 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 8576 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 8577 tcp->payload_len, tcp->payload) || 8578 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 8579 tcp->data_interval) || 8580 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 8581 tcp->wake_len, tcp->wake_data) || 8582 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 8583 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 8584 return -ENOBUFS; 8585 8586 if (tcp->payload_seq.len && 8587 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 8588 sizeof(tcp->payload_seq), &tcp->payload_seq)) 8589 return -ENOBUFS; 8590 8591 if (tcp->payload_tok.len && 8592 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 8593 sizeof(tcp->payload_tok) + tcp->tokens_size, 8594 &tcp->payload_tok)) 8595 return -ENOBUFS; 8596 8597 nla_nest_end(msg, nl_tcp); 8598 8599 return 0; 8600 } 8601 8602 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 8603 { 8604 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8605 struct sk_buff *msg; 8606 void *hdr; 8607 u32 size = NLMSG_DEFAULT_SIZE; 8608 8609 if (!rdev->wiphy.wowlan) 8610 return -EOPNOTSUPP; 8611 8612 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 8613 /* adjust size to have room for all the data */ 8614 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 8615 rdev->wiphy.wowlan_config->tcp->payload_len + 8616 rdev->wiphy.wowlan_config->tcp->wake_len + 8617 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 8618 } 8619 8620 msg = nlmsg_new(size, GFP_KERNEL); 8621 if (!msg) 8622 return -ENOMEM; 8623 8624 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8625 NL80211_CMD_GET_WOWLAN); 8626 if (!hdr) 8627 goto nla_put_failure; 8628 8629 if (rdev->wiphy.wowlan_config) { 8630 struct nlattr *nl_wowlan; 8631 8632 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 8633 if (!nl_wowlan) 8634 goto nla_put_failure; 8635 8636 if ((rdev->wiphy.wowlan_config->any && 8637 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 8638 (rdev->wiphy.wowlan_config->disconnect && 8639 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 8640 (rdev->wiphy.wowlan_config->magic_pkt && 8641 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 8642 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 8643 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 8644 (rdev->wiphy.wowlan_config->eap_identity_req && 8645 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 8646 (rdev->wiphy.wowlan_config->four_way_handshake && 8647 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 8648 (rdev->wiphy.wowlan_config->rfkill_release && 8649 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 8650 goto nla_put_failure; 8651 8652 if (nl80211_send_wowlan_patterns(msg, rdev)) 8653 goto nla_put_failure; 8654 8655 if (nl80211_send_wowlan_tcp(msg, 8656 rdev->wiphy.wowlan_config->tcp)) 8657 goto nla_put_failure; 8658 8659 nla_nest_end(msg, nl_wowlan); 8660 } 8661 8662 genlmsg_end(msg, hdr); 8663 return genlmsg_reply(msg, info); 8664 8665 nla_put_failure: 8666 nlmsg_free(msg); 8667 return -ENOBUFS; 8668 } 8669 8670 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 8671 struct nlattr *attr, 8672 struct cfg80211_wowlan *trig) 8673 { 8674 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 8675 struct cfg80211_wowlan_tcp *cfg; 8676 struct nl80211_wowlan_tcp_data_token *tok = NULL; 8677 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 8678 u32 size; 8679 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 8680 int err, port; 8681 8682 if (!rdev->wiphy.wowlan->tcp) 8683 return -EINVAL; 8684 8685 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 8686 nla_data(attr), nla_len(attr), 8687 nl80211_wowlan_tcp_policy); 8688 if (err) 8689 return err; 8690 8691 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 8692 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 8693 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 8694 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 8695 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 8696 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 8697 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 8698 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 8699 return -EINVAL; 8700 8701 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 8702 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 8703 return -EINVAL; 8704 8705 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 8706 rdev->wiphy.wowlan->tcp->data_interval_max || 8707 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 8708 return -EINVAL; 8709 8710 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 8711 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 8712 return -EINVAL; 8713 8714 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 8715 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 8716 return -EINVAL; 8717 8718 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 8719 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8720 8721 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 8722 tokens_size = tokln - sizeof(*tok); 8723 8724 if (!tok->len || tokens_size % tok->len) 8725 return -EINVAL; 8726 if (!rdev->wiphy.wowlan->tcp->tok) 8727 return -EINVAL; 8728 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 8729 return -EINVAL; 8730 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 8731 return -EINVAL; 8732 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 8733 return -EINVAL; 8734 if (tok->offset + tok->len > data_size) 8735 return -EINVAL; 8736 } 8737 8738 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 8739 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 8740 if (!rdev->wiphy.wowlan->tcp->seq) 8741 return -EINVAL; 8742 if (seq->len == 0 || seq->len > 4) 8743 return -EINVAL; 8744 if (seq->len + seq->offset > data_size) 8745 return -EINVAL; 8746 } 8747 8748 size = sizeof(*cfg); 8749 size += data_size; 8750 size += wake_size + wake_mask_size; 8751 size += tokens_size; 8752 8753 cfg = kzalloc(size, GFP_KERNEL); 8754 if (!cfg) 8755 return -ENOMEM; 8756 cfg->src = nla_get_be32(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 8757 cfg->dst = nla_get_be32(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 8758 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 8759 ETH_ALEN); 8760 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 8761 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 8762 else 8763 port = 0; 8764 #ifdef CONFIG_INET 8765 /* allocate a socket and port for it and use it */ 8766 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 8767 IPPROTO_TCP, &cfg->sock, 1); 8768 if (err) { 8769 kfree(cfg); 8770 return err; 8771 } 8772 if (inet_csk_get_port(cfg->sock->sk, port)) { 8773 sock_release(cfg->sock); 8774 kfree(cfg); 8775 return -EADDRINUSE; 8776 } 8777 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 8778 #else 8779 if (!port) { 8780 kfree(cfg); 8781 return -EINVAL; 8782 } 8783 cfg->src_port = port; 8784 #endif 8785 8786 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 8787 cfg->payload_len = data_size; 8788 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 8789 memcpy((void *)cfg->payload, 8790 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 8791 data_size); 8792 if (seq) 8793 cfg->payload_seq = *seq; 8794 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 8795 cfg->wake_len = wake_size; 8796 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 8797 memcpy((void *)cfg->wake_data, 8798 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 8799 wake_size); 8800 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 8801 data_size + wake_size; 8802 memcpy((void *)cfg->wake_mask, 8803 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 8804 wake_mask_size); 8805 if (tok) { 8806 cfg->tokens_size = tokens_size; 8807 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 8808 } 8809 8810 trig->tcp = cfg; 8811 8812 return 0; 8813 } 8814 8815 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 8816 const struct wiphy_wowlan_support *wowlan, 8817 struct nlattr *attr, 8818 struct cfg80211_wowlan *trig) 8819 { 8820 struct nlattr **tb; 8821 int err; 8822 8823 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 8824 if (!tb) 8825 return -ENOMEM; 8826 8827 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 8828 err = -EOPNOTSUPP; 8829 goto out; 8830 } 8831 8832 err = nla_parse(tb, NL80211_ATTR_MAX, 8833 nla_data(attr), nla_len(attr), 8834 nl80211_policy); 8835 if (err) 8836 goto out; 8837 8838 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 8839 err = PTR_ERR_OR_ZERO(trig->nd_config); 8840 if (err) 8841 trig->nd_config = NULL; 8842 8843 out: 8844 kfree(tb); 8845 return err; 8846 } 8847 8848 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 8849 { 8850 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8851 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 8852 struct cfg80211_wowlan new_triggers = {}; 8853 struct cfg80211_wowlan *ntrig; 8854 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 8855 int err, i; 8856 bool prev_enabled = rdev->wiphy.wowlan_config; 8857 8858 if (!wowlan) 8859 return -EOPNOTSUPP; 8860 8861 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 8862 cfg80211_rdev_free_wowlan(rdev); 8863 rdev->wiphy.wowlan_config = NULL; 8864 goto set_wakeup; 8865 } 8866 8867 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 8868 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8869 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 8870 nl80211_wowlan_policy); 8871 if (err) 8872 return err; 8873 8874 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 8875 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 8876 return -EINVAL; 8877 new_triggers.any = true; 8878 } 8879 8880 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 8881 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 8882 return -EINVAL; 8883 new_triggers.disconnect = true; 8884 } 8885 8886 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 8887 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 8888 return -EINVAL; 8889 new_triggers.magic_pkt = true; 8890 } 8891 8892 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 8893 return -EINVAL; 8894 8895 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 8896 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 8897 return -EINVAL; 8898 new_triggers.gtk_rekey_failure = true; 8899 } 8900 8901 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 8902 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 8903 return -EINVAL; 8904 new_triggers.eap_identity_req = true; 8905 } 8906 8907 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 8908 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 8909 return -EINVAL; 8910 new_triggers.four_way_handshake = true; 8911 } 8912 8913 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 8914 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 8915 return -EINVAL; 8916 new_triggers.rfkill_release = true; 8917 } 8918 8919 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 8920 struct nlattr *pat; 8921 int n_patterns = 0; 8922 int rem, pat_len, mask_len, pkt_offset; 8923 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 8924 8925 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8926 rem) 8927 n_patterns++; 8928 if (n_patterns > wowlan->n_patterns) 8929 return -EINVAL; 8930 8931 new_triggers.patterns = kcalloc(n_patterns, 8932 sizeof(new_triggers.patterns[0]), 8933 GFP_KERNEL); 8934 if (!new_triggers.patterns) 8935 return -ENOMEM; 8936 8937 new_triggers.n_patterns = n_patterns; 8938 i = 0; 8939 8940 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 8941 rem) { 8942 u8 *mask_pat; 8943 8944 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 8945 nla_len(pat), NULL); 8946 err = -EINVAL; 8947 if (!pat_tb[NL80211_PKTPAT_MASK] || 8948 !pat_tb[NL80211_PKTPAT_PATTERN]) 8949 goto error; 8950 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 8951 mask_len = DIV_ROUND_UP(pat_len, 8); 8952 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 8953 goto error; 8954 if (pat_len > wowlan->pattern_max_len || 8955 pat_len < wowlan->pattern_min_len) 8956 goto error; 8957 8958 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 8959 pkt_offset = 0; 8960 else 8961 pkt_offset = nla_get_u32( 8962 pat_tb[NL80211_PKTPAT_OFFSET]); 8963 if (pkt_offset > wowlan->max_pkt_offset) 8964 goto error; 8965 new_triggers.patterns[i].pkt_offset = pkt_offset; 8966 8967 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 8968 if (!mask_pat) { 8969 err = -ENOMEM; 8970 goto error; 8971 } 8972 new_triggers.patterns[i].mask = mask_pat; 8973 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 8974 mask_len); 8975 mask_pat += mask_len; 8976 new_triggers.patterns[i].pattern = mask_pat; 8977 new_triggers.patterns[i].pattern_len = pat_len; 8978 memcpy(mask_pat, 8979 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 8980 pat_len); 8981 i++; 8982 } 8983 } 8984 8985 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 8986 err = nl80211_parse_wowlan_tcp( 8987 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 8988 &new_triggers); 8989 if (err) 8990 goto error; 8991 } 8992 8993 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 8994 err = nl80211_parse_wowlan_nd( 8995 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 8996 &new_triggers); 8997 if (err) 8998 goto error; 8999 } 9000 9001 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9002 if (!ntrig) { 9003 err = -ENOMEM; 9004 goto error; 9005 } 9006 cfg80211_rdev_free_wowlan(rdev); 9007 rdev->wiphy.wowlan_config = ntrig; 9008 9009 set_wakeup: 9010 if (rdev->ops->set_wakeup && 9011 prev_enabled != !!rdev->wiphy.wowlan_config) 9012 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9013 9014 return 0; 9015 error: 9016 for (i = 0; i < new_triggers.n_patterns; i++) 9017 kfree(new_triggers.patterns[i].mask); 9018 kfree(new_triggers.patterns); 9019 if (new_triggers.tcp && new_triggers.tcp->sock) 9020 sock_release(new_triggers.tcp->sock); 9021 kfree(new_triggers.tcp); 9022 return err; 9023 } 9024 #endif 9025 9026 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9027 struct cfg80211_registered_device *rdev) 9028 { 9029 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9030 int i, j, pat_len; 9031 struct cfg80211_coalesce_rules *rule; 9032 9033 if (!rdev->coalesce->n_rules) 9034 return 0; 9035 9036 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9037 if (!nl_rules) 9038 return -ENOBUFS; 9039 9040 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9041 nl_rule = nla_nest_start(msg, i + 1); 9042 if (!nl_rule) 9043 return -ENOBUFS; 9044 9045 rule = &rdev->coalesce->rules[i]; 9046 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9047 rule->delay)) 9048 return -ENOBUFS; 9049 9050 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9051 rule->condition)) 9052 return -ENOBUFS; 9053 9054 nl_pats = nla_nest_start(msg, 9055 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9056 if (!nl_pats) 9057 return -ENOBUFS; 9058 9059 for (j = 0; j < rule->n_patterns; j++) { 9060 nl_pat = nla_nest_start(msg, j + 1); 9061 if (!nl_pat) 9062 return -ENOBUFS; 9063 pat_len = rule->patterns[j].pattern_len; 9064 if (nla_put(msg, NL80211_PKTPAT_MASK, 9065 DIV_ROUND_UP(pat_len, 8), 9066 rule->patterns[j].mask) || 9067 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9068 rule->patterns[j].pattern) || 9069 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9070 rule->patterns[j].pkt_offset)) 9071 return -ENOBUFS; 9072 nla_nest_end(msg, nl_pat); 9073 } 9074 nla_nest_end(msg, nl_pats); 9075 nla_nest_end(msg, nl_rule); 9076 } 9077 nla_nest_end(msg, nl_rules); 9078 9079 return 0; 9080 } 9081 9082 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9083 { 9084 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9085 struct sk_buff *msg; 9086 void *hdr; 9087 9088 if (!rdev->wiphy.coalesce) 9089 return -EOPNOTSUPP; 9090 9091 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9092 if (!msg) 9093 return -ENOMEM; 9094 9095 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9096 NL80211_CMD_GET_COALESCE); 9097 if (!hdr) 9098 goto nla_put_failure; 9099 9100 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9101 goto nla_put_failure; 9102 9103 genlmsg_end(msg, hdr); 9104 return genlmsg_reply(msg, info); 9105 9106 nla_put_failure: 9107 nlmsg_free(msg); 9108 return -ENOBUFS; 9109 } 9110 9111 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9112 { 9113 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9114 int i, j; 9115 struct cfg80211_coalesce_rules *rule; 9116 9117 if (!coalesce) 9118 return; 9119 9120 for (i = 0; i < coalesce->n_rules; i++) { 9121 rule = &coalesce->rules[i]; 9122 for (j = 0; j < rule->n_patterns; j++) 9123 kfree(rule->patterns[j].mask); 9124 kfree(rule->patterns); 9125 } 9126 kfree(coalesce->rules); 9127 kfree(coalesce); 9128 rdev->coalesce = NULL; 9129 } 9130 9131 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9132 struct nlattr *rule, 9133 struct cfg80211_coalesce_rules *new_rule) 9134 { 9135 int err, i; 9136 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9137 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9138 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9139 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9140 9141 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9142 nla_len(rule), nl80211_coalesce_policy); 9143 if (err) 9144 return err; 9145 9146 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 9147 new_rule->delay = 9148 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 9149 if (new_rule->delay > coalesce->max_delay) 9150 return -EINVAL; 9151 9152 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 9153 new_rule->condition = 9154 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 9155 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 9156 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 9157 return -EINVAL; 9158 9159 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 9160 return -EINVAL; 9161 9162 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9163 rem) 9164 n_patterns++; 9165 if (n_patterns > coalesce->n_patterns) 9166 return -EINVAL; 9167 9168 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 9169 GFP_KERNEL); 9170 if (!new_rule->patterns) 9171 return -ENOMEM; 9172 9173 new_rule->n_patterns = n_patterns; 9174 i = 0; 9175 9176 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 9177 rem) { 9178 u8 *mask_pat; 9179 9180 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9181 nla_len(pat), NULL); 9182 if (!pat_tb[NL80211_PKTPAT_MASK] || 9183 !pat_tb[NL80211_PKTPAT_PATTERN]) 9184 return -EINVAL; 9185 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9186 mask_len = DIV_ROUND_UP(pat_len, 8); 9187 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9188 return -EINVAL; 9189 if (pat_len > coalesce->pattern_max_len || 9190 pat_len < coalesce->pattern_min_len) 9191 return -EINVAL; 9192 9193 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9194 pkt_offset = 0; 9195 else 9196 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 9197 if (pkt_offset > coalesce->max_pkt_offset) 9198 return -EINVAL; 9199 new_rule->patterns[i].pkt_offset = pkt_offset; 9200 9201 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9202 if (!mask_pat) 9203 return -ENOMEM; 9204 9205 new_rule->patterns[i].mask = mask_pat; 9206 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9207 mask_len); 9208 9209 mask_pat += mask_len; 9210 new_rule->patterns[i].pattern = mask_pat; 9211 new_rule->patterns[i].pattern_len = pat_len; 9212 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9213 pat_len); 9214 i++; 9215 } 9216 9217 return 0; 9218 } 9219 9220 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 9221 { 9222 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9223 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9224 struct cfg80211_coalesce new_coalesce = {}; 9225 struct cfg80211_coalesce *n_coalesce; 9226 int err, rem_rule, n_rules = 0, i, j; 9227 struct nlattr *rule; 9228 struct cfg80211_coalesce_rules *tmp_rule; 9229 9230 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 9231 return -EOPNOTSUPP; 9232 9233 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 9234 cfg80211_rdev_free_coalesce(rdev); 9235 rdev->ops->set_coalesce(&rdev->wiphy, NULL); 9236 return 0; 9237 } 9238 9239 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9240 rem_rule) 9241 n_rules++; 9242 if (n_rules > coalesce->n_rules) 9243 return -EINVAL; 9244 9245 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 9246 GFP_KERNEL); 9247 if (!new_coalesce.rules) 9248 return -ENOMEM; 9249 9250 new_coalesce.n_rules = n_rules; 9251 i = 0; 9252 9253 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 9254 rem_rule) { 9255 err = nl80211_parse_coalesce_rule(rdev, rule, 9256 &new_coalesce.rules[i]); 9257 if (err) 9258 goto error; 9259 9260 i++; 9261 } 9262 9263 err = rdev->ops->set_coalesce(&rdev->wiphy, &new_coalesce); 9264 if (err) 9265 goto error; 9266 9267 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 9268 if (!n_coalesce) { 9269 err = -ENOMEM; 9270 goto error; 9271 } 9272 cfg80211_rdev_free_coalesce(rdev); 9273 rdev->coalesce = n_coalesce; 9274 9275 return 0; 9276 error: 9277 for (i = 0; i < new_coalesce.n_rules; i++) { 9278 tmp_rule = &new_coalesce.rules[i]; 9279 for (j = 0; j < tmp_rule->n_patterns; j++) 9280 kfree(tmp_rule->patterns[j].mask); 9281 kfree(tmp_rule->patterns); 9282 } 9283 kfree(new_coalesce.rules); 9284 9285 return err; 9286 } 9287 9288 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 9289 { 9290 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9291 struct net_device *dev = info->user_ptr[1]; 9292 struct wireless_dev *wdev = dev->ieee80211_ptr; 9293 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 9294 struct cfg80211_gtk_rekey_data rekey_data; 9295 int err; 9296 9297 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 9298 return -EINVAL; 9299 9300 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 9301 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 9302 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 9303 nl80211_rekey_policy); 9304 if (err) 9305 return err; 9306 9307 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 9308 return -ERANGE; 9309 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 9310 return -ERANGE; 9311 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 9312 return -ERANGE; 9313 9314 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 9315 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 9316 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 9317 9318 wdev_lock(wdev); 9319 if (!wdev->current_bss) { 9320 err = -ENOTCONN; 9321 goto out; 9322 } 9323 9324 if (!rdev->ops->set_rekey_data) { 9325 err = -EOPNOTSUPP; 9326 goto out; 9327 } 9328 9329 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 9330 out: 9331 wdev_unlock(wdev); 9332 return err; 9333 } 9334 9335 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 9336 struct genl_info *info) 9337 { 9338 struct net_device *dev = info->user_ptr[1]; 9339 struct wireless_dev *wdev = dev->ieee80211_ptr; 9340 9341 if (wdev->iftype != NL80211_IFTYPE_AP && 9342 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9343 return -EINVAL; 9344 9345 if (wdev->ap_unexpected_nlportid) 9346 return -EBUSY; 9347 9348 wdev->ap_unexpected_nlportid = info->snd_portid; 9349 return 0; 9350 } 9351 9352 static int nl80211_probe_client(struct sk_buff *skb, 9353 struct genl_info *info) 9354 { 9355 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9356 struct net_device *dev = info->user_ptr[1]; 9357 struct wireless_dev *wdev = dev->ieee80211_ptr; 9358 struct sk_buff *msg; 9359 void *hdr; 9360 const u8 *addr; 9361 u64 cookie; 9362 int err; 9363 9364 if (wdev->iftype != NL80211_IFTYPE_AP && 9365 wdev->iftype != NL80211_IFTYPE_P2P_GO) 9366 return -EOPNOTSUPP; 9367 9368 if (!info->attrs[NL80211_ATTR_MAC]) 9369 return -EINVAL; 9370 9371 if (!rdev->ops->probe_client) 9372 return -EOPNOTSUPP; 9373 9374 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9375 if (!msg) 9376 return -ENOMEM; 9377 9378 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9379 NL80211_CMD_PROBE_CLIENT); 9380 if (!hdr) { 9381 err = -ENOBUFS; 9382 goto free_msg; 9383 } 9384 9385 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9386 9387 err = rdev_probe_client(rdev, dev, addr, &cookie); 9388 if (err) 9389 goto free_msg; 9390 9391 if (nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 9392 goto nla_put_failure; 9393 9394 genlmsg_end(msg, hdr); 9395 9396 return genlmsg_reply(msg, info); 9397 9398 nla_put_failure: 9399 err = -ENOBUFS; 9400 free_msg: 9401 nlmsg_free(msg); 9402 return err; 9403 } 9404 9405 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 9406 { 9407 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9408 struct cfg80211_beacon_registration *reg, *nreg; 9409 int rv; 9410 9411 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 9412 return -EOPNOTSUPP; 9413 9414 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 9415 if (!nreg) 9416 return -ENOMEM; 9417 9418 /* First, check if already registered. */ 9419 spin_lock_bh(&rdev->beacon_registrations_lock); 9420 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 9421 if (reg->nlportid == info->snd_portid) { 9422 rv = -EALREADY; 9423 goto out_err; 9424 } 9425 } 9426 /* Add it to the list */ 9427 nreg->nlportid = info->snd_portid; 9428 list_add(&nreg->list, &rdev->beacon_registrations); 9429 9430 spin_unlock_bh(&rdev->beacon_registrations_lock); 9431 9432 return 0; 9433 out_err: 9434 spin_unlock_bh(&rdev->beacon_registrations_lock); 9435 kfree(nreg); 9436 return rv; 9437 } 9438 9439 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 9440 { 9441 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9442 struct wireless_dev *wdev = info->user_ptr[1]; 9443 int err; 9444 9445 if (!rdev->ops->start_p2p_device) 9446 return -EOPNOTSUPP; 9447 9448 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9449 return -EOPNOTSUPP; 9450 9451 if (wdev->p2p_started) 9452 return 0; 9453 9454 if (rfkill_blocked(rdev->rfkill)) 9455 return -ERFKILL; 9456 9457 err = rdev_start_p2p_device(rdev, wdev); 9458 if (err) 9459 return err; 9460 9461 wdev->p2p_started = true; 9462 rdev->opencount++; 9463 9464 return 0; 9465 } 9466 9467 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 9468 { 9469 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9470 struct wireless_dev *wdev = info->user_ptr[1]; 9471 9472 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 9473 return -EOPNOTSUPP; 9474 9475 if (!rdev->ops->stop_p2p_device) 9476 return -EOPNOTSUPP; 9477 9478 cfg80211_stop_p2p_device(rdev, wdev); 9479 9480 return 0; 9481 } 9482 9483 static int nl80211_get_protocol_features(struct sk_buff *skb, 9484 struct genl_info *info) 9485 { 9486 void *hdr; 9487 struct sk_buff *msg; 9488 9489 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9490 if (!msg) 9491 return -ENOMEM; 9492 9493 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9494 NL80211_CMD_GET_PROTOCOL_FEATURES); 9495 if (!hdr) 9496 goto nla_put_failure; 9497 9498 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 9499 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 9500 goto nla_put_failure; 9501 9502 genlmsg_end(msg, hdr); 9503 return genlmsg_reply(msg, info); 9504 9505 nla_put_failure: 9506 kfree_skb(msg); 9507 return -ENOBUFS; 9508 } 9509 9510 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 9511 { 9512 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9513 struct cfg80211_update_ft_ies_params ft_params; 9514 struct net_device *dev = info->user_ptr[1]; 9515 9516 if (!rdev->ops->update_ft_ies) 9517 return -EOPNOTSUPP; 9518 9519 if (!info->attrs[NL80211_ATTR_MDID] || 9520 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 9521 return -EINVAL; 9522 9523 memset(&ft_params, 0, sizeof(ft_params)); 9524 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 9525 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 9526 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 9527 9528 return rdev_update_ft_ies(rdev, dev, &ft_params); 9529 } 9530 9531 static int nl80211_crit_protocol_start(struct sk_buff *skb, 9532 struct genl_info *info) 9533 { 9534 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9535 struct wireless_dev *wdev = info->user_ptr[1]; 9536 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 9537 u16 duration; 9538 int ret; 9539 9540 if (!rdev->ops->crit_proto_start) 9541 return -EOPNOTSUPP; 9542 9543 if (WARN_ON(!rdev->ops->crit_proto_stop)) 9544 return -EINVAL; 9545 9546 if (rdev->crit_proto_nlportid) 9547 return -EBUSY; 9548 9549 /* determine protocol if provided */ 9550 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 9551 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 9552 9553 if (proto >= NUM_NL80211_CRIT_PROTO) 9554 return -EINVAL; 9555 9556 /* timeout must be provided */ 9557 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 9558 return -EINVAL; 9559 9560 duration = 9561 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 9562 9563 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 9564 return -ERANGE; 9565 9566 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 9567 if (!ret) 9568 rdev->crit_proto_nlportid = info->snd_portid; 9569 9570 return ret; 9571 } 9572 9573 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 9574 struct genl_info *info) 9575 { 9576 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9577 struct wireless_dev *wdev = info->user_ptr[1]; 9578 9579 if (!rdev->ops->crit_proto_stop) 9580 return -EOPNOTSUPP; 9581 9582 if (rdev->crit_proto_nlportid) { 9583 rdev->crit_proto_nlportid = 0; 9584 rdev_crit_proto_stop(rdev, wdev); 9585 } 9586 return 0; 9587 } 9588 9589 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 9590 { 9591 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9592 struct wireless_dev *wdev = 9593 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 9594 int i, err; 9595 u32 vid, subcmd; 9596 9597 if (!rdev->wiphy.vendor_commands) 9598 return -EOPNOTSUPP; 9599 9600 if (IS_ERR(wdev)) { 9601 err = PTR_ERR(wdev); 9602 if (err != -EINVAL) 9603 return err; 9604 wdev = NULL; 9605 } else if (wdev->wiphy != &rdev->wiphy) { 9606 return -EINVAL; 9607 } 9608 9609 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 9610 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 9611 return -EINVAL; 9612 9613 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 9614 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 9615 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 9616 const struct wiphy_vendor_command *vcmd; 9617 void *data = NULL; 9618 int len = 0; 9619 9620 vcmd = &rdev->wiphy.vendor_commands[i]; 9621 9622 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 9623 continue; 9624 9625 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 9626 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 9627 if (!wdev) 9628 return -EINVAL; 9629 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 9630 !wdev->netdev) 9631 return -EINVAL; 9632 9633 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 9634 if (wdev->netdev && 9635 !netif_running(wdev->netdev)) 9636 return -ENETDOWN; 9637 if (!wdev->netdev && !wdev->p2p_started) 9638 return -ENETDOWN; 9639 } 9640 } else { 9641 wdev = NULL; 9642 } 9643 9644 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 9645 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9646 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 9647 } 9648 9649 rdev->cur_cmd_info = info; 9650 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 9651 data, len); 9652 rdev->cur_cmd_info = NULL; 9653 return err; 9654 } 9655 9656 return -EOPNOTSUPP; 9657 } 9658 9659 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 9660 enum nl80211_commands cmd, 9661 enum nl80211_attrs attr, 9662 int approxlen) 9663 { 9664 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 9665 9666 if (WARN_ON(!rdev->cur_cmd_info)) 9667 return NULL; 9668 9669 return __cfg80211_alloc_vendor_skb(rdev, approxlen, 9670 rdev->cur_cmd_info->snd_portid, 9671 rdev->cur_cmd_info->snd_seq, 9672 cmd, attr, NULL, GFP_KERNEL); 9673 } 9674 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 9675 9676 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 9677 { 9678 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 9679 void *hdr = ((void **)skb->cb)[1]; 9680 struct nlattr *data = ((void **)skb->cb)[2]; 9681 9682 /* clear CB data for netlink core to own from now on */ 9683 memset(skb->cb, 0, sizeof(skb->cb)); 9684 9685 if (WARN_ON(!rdev->cur_cmd_info)) { 9686 kfree_skb(skb); 9687 return -EINVAL; 9688 } 9689 9690 nla_nest_end(skb, data); 9691 genlmsg_end(skb, hdr); 9692 return genlmsg_reply(skb, rdev->cur_cmd_info); 9693 } 9694 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 9695 9696 9697 static int nl80211_set_qos_map(struct sk_buff *skb, 9698 struct genl_info *info) 9699 { 9700 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9701 struct cfg80211_qos_map *qos_map = NULL; 9702 struct net_device *dev = info->user_ptr[1]; 9703 u8 *pos, len, num_des, des_len, des; 9704 int ret; 9705 9706 if (!rdev->ops->set_qos_map) 9707 return -EOPNOTSUPP; 9708 9709 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 9710 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 9711 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 9712 9713 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 9714 len > IEEE80211_QOS_MAP_LEN_MAX) 9715 return -EINVAL; 9716 9717 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 9718 if (!qos_map) 9719 return -ENOMEM; 9720 9721 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 9722 if (num_des) { 9723 des_len = num_des * 9724 sizeof(struct cfg80211_dscp_exception); 9725 memcpy(qos_map->dscp_exception, pos, des_len); 9726 qos_map->num_des = num_des; 9727 for (des = 0; des < num_des; des++) { 9728 if (qos_map->dscp_exception[des].up > 7) { 9729 kfree(qos_map); 9730 return -EINVAL; 9731 } 9732 } 9733 pos += des_len; 9734 } 9735 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 9736 } 9737 9738 wdev_lock(dev->ieee80211_ptr); 9739 ret = nl80211_key_allowed(dev->ieee80211_ptr); 9740 if (!ret) 9741 ret = rdev_set_qos_map(rdev, dev, qos_map); 9742 wdev_unlock(dev->ieee80211_ptr); 9743 9744 kfree(qos_map); 9745 return ret; 9746 } 9747 9748 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 9749 { 9750 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9751 struct net_device *dev = info->user_ptr[1]; 9752 struct wireless_dev *wdev = dev->ieee80211_ptr; 9753 const u8 *peer; 9754 u8 tsid, up; 9755 u16 admitted_time = 0; 9756 int err; 9757 9758 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 9759 return -EOPNOTSUPP; 9760 9761 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 9762 !info->attrs[NL80211_ATTR_USER_PRIO]) 9763 return -EINVAL; 9764 9765 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 9766 if (tsid >= IEEE80211_NUM_TIDS) 9767 return -EINVAL; 9768 9769 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 9770 if (up >= IEEE80211_NUM_UPS) 9771 return -EINVAL; 9772 9773 /* WMM uses TIDs 0-7 even for TSPEC */ 9774 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 9775 /* TODO: handle 802.11 TSPEC/admission control 9776 * need more attributes for that (e.g. BA session requirement); 9777 * change the WMM adminssion test above to allow both then 9778 */ 9779 return -EINVAL; 9780 } 9781 9782 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9783 9784 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 9785 admitted_time = 9786 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 9787 if (!admitted_time) 9788 return -EINVAL; 9789 } 9790 9791 wdev_lock(wdev); 9792 switch (wdev->iftype) { 9793 case NL80211_IFTYPE_STATION: 9794 case NL80211_IFTYPE_P2P_CLIENT: 9795 if (wdev->current_bss) 9796 break; 9797 err = -ENOTCONN; 9798 goto out; 9799 default: 9800 err = -EOPNOTSUPP; 9801 goto out; 9802 } 9803 9804 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 9805 9806 out: 9807 wdev_unlock(wdev); 9808 return err; 9809 } 9810 9811 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 9812 { 9813 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9814 struct net_device *dev = info->user_ptr[1]; 9815 struct wireless_dev *wdev = dev->ieee80211_ptr; 9816 const u8 *peer; 9817 u8 tsid; 9818 int err; 9819 9820 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 9821 return -EINVAL; 9822 9823 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 9824 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 9825 9826 wdev_lock(wdev); 9827 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 9828 wdev_unlock(wdev); 9829 9830 return err; 9831 } 9832 9833 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 9834 struct genl_info *info) 9835 { 9836 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9837 struct net_device *dev = info->user_ptr[1]; 9838 struct wireless_dev *wdev = dev->ieee80211_ptr; 9839 struct cfg80211_chan_def chandef = {}; 9840 const u8 *addr; 9841 u8 oper_class; 9842 int err; 9843 9844 if (!rdev->ops->tdls_channel_switch || 9845 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 9846 return -EOPNOTSUPP; 9847 9848 switch (dev->ieee80211_ptr->iftype) { 9849 case NL80211_IFTYPE_STATION: 9850 case NL80211_IFTYPE_P2P_CLIENT: 9851 break; 9852 default: 9853 return -EOPNOTSUPP; 9854 } 9855 9856 if (!info->attrs[NL80211_ATTR_MAC] || 9857 !info->attrs[NL80211_ATTR_OPER_CLASS]) 9858 return -EINVAL; 9859 9860 err = nl80211_parse_chandef(rdev, info, &chandef); 9861 if (err) 9862 return err; 9863 9864 /* 9865 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 9866 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 9867 * specification is not defined for them. 9868 */ 9869 if (chandef.chan->band == IEEE80211_BAND_2GHZ && 9870 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 9871 chandef.width != NL80211_CHAN_WIDTH_20) 9872 return -EINVAL; 9873 9874 /* we will be active on the TDLS link */ 9875 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &chandef, wdev->iftype)) 9876 return -EINVAL; 9877 9878 /* don't allow switching to DFS channels */ 9879 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 9880 return -EINVAL; 9881 9882 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9883 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 9884 9885 wdev_lock(wdev); 9886 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 9887 wdev_unlock(wdev); 9888 9889 return err; 9890 } 9891 9892 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 9893 struct genl_info *info) 9894 { 9895 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9896 struct net_device *dev = info->user_ptr[1]; 9897 struct wireless_dev *wdev = dev->ieee80211_ptr; 9898 const u8 *addr; 9899 9900 if (!rdev->ops->tdls_channel_switch || 9901 !rdev->ops->tdls_cancel_channel_switch || 9902 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 9903 return -EOPNOTSUPP; 9904 9905 switch (dev->ieee80211_ptr->iftype) { 9906 case NL80211_IFTYPE_STATION: 9907 case NL80211_IFTYPE_P2P_CLIENT: 9908 break; 9909 default: 9910 return -EOPNOTSUPP; 9911 } 9912 9913 if (!info->attrs[NL80211_ATTR_MAC]) 9914 return -EINVAL; 9915 9916 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 9917 9918 wdev_lock(wdev); 9919 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 9920 wdev_unlock(wdev); 9921 9922 return 0; 9923 } 9924 9925 #define NL80211_FLAG_NEED_WIPHY 0x01 9926 #define NL80211_FLAG_NEED_NETDEV 0x02 9927 #define NL80211_FLAG_NEED_RTNL 0x04 9928 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 9929 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 9930 NL80211_FLAG_CHECK_NETDEV_UP) 9931 #define NL80211_FLAG_NEED_WDEV 0x10 9932 /* If a netdev is associated, it must be UP, P2P must be started */ 9933 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 9934 NL80211_FLAG_CHECK_NETDEV_UP) 9935 #define NL80211_FLAG_CLEAR_SKB 0x20 9936 9937 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 9938 struct genl_info *info) 9939 { 9940 struct cfg80211_registered_device *rdev; 9941 struct wireless_dev *wdev; 9942 struct net_device *dev; 9943 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 9944 9945 if (rtnl) 9946 rtnl_lock(); 9947 9948 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 9949 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 9950 if (IS_ERR(rdev)) { 9951 if (rtnl) 9952 rtnl_unlock(); 9953 return PTR_ERR(rdev); 9954 } 9955 info->user_ptr[0] = rdev; 9956 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 9957 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 9958 ASSERT_RTNL(); 9959 9960 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 9961 info->attrs); 9962 if (IS_ERR(wdev)) { 9963 if (rtnl) 9964 rtnl_unlock(); 9965 return PTR_ERR(wdev); 9966 } 9967 9968 dev = wdev->netdev; 9969 rdev = wiphy_to_rdev(wdev->wiphy); 9970 9971 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 9972 if (!dev) { 9973 if (rtnl) 9974 rtnl_unlock(); 9975 return -EINVAL; 9976 } 9977 9978 info->user_ptr[1] = dev; 9979 } else { 9980 info->user_ptr[1] = wdev; 9981 } 9982 9983 if (dev) { 9984 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 9985 !netif_running(dev)) { 9986 if (rtnl) 9987 rtnl_unlock(); 9988 return -ENETDOWN; 9989 } 9990 9991 dev_hold(dev); 9992 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 9993 if (!wdev->p2p_started) { 9994 if (rtnl) 9995 rtnl_unlock(); 9996 return -ENETDOWN; 9997 } 9998 } 9999 10000 info->user_ptr[0] = rdev; 10001 } 10002 10003 return 0; 10004 } 10005 10006 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 10007 struct genl_info *info) 10008 { 10009 if (info->user_ptr[1]) { 10010 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 10011 struct wireless_dev *wdev = info->user_ptr[1]; 10012 10013 if (wdev->netdev) 10014 dev_put(wdev->netdev); 10015 } else { 10016 dev_put(info->user_ptr[1]); 10017 } 10018 } 10019 10020 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 10021 rtnl_unlock(); 10022 10023 /* If needed, clear the netlink message payload from the SKB 10024 * as it might contain key data that shouldn't stick around on 10025 * the heap after the SKB is freed. The netlink message header 10026 * is still needed for further processing, so leave it intact. 10027 */ 10028 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 10029 struct nlmsghdr *nlh = nlmsg_hdr(skb); 10030 10031 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 10032 } 10033 } 10034 10035 static const struct genl_ops nl80211_ops[] = { 10036 { 10037 .cmd = NL80211_CMD_GET_WIPHY, 10038 .doit = nl80211_get_wiphy, 10039 .dumpit = nl80211_dump_wiphy, 10040 .done = nl80211_dump_wiphy_done, 10041 .policy = nl80211_policy, 10042 /* can be retrieved by unprivileged users */ 10043 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10044 NL80211_FLAG_NEED_RTNL, 10045 }, 10046 { 10047 .cmd = NL80211_CMD_SET_WIPHY, 10048 .doit = nl80211_set_wiphy, 10049 .policy = nl80211_policy, 10050 .flags = GENL_ADMIN_PERM, 10051 .internal_flags = NL80211_FLAG_NEED_RTNL, 10052 }, 10053 { 10054 .cmd = NL80211_CMD_GET_INTERFACE, 10055 .doit = nl80211_get_interface, 10056 .dumpit = nl80211_dump_interface, 10057 .policy = nl80211_policy, 10058 /* can be retrieved by unprivileged users */ 10059 .internal_flags = NL80211_FLAG_NEED_WDEV | 10060 NL80211_FLAG_NEED_RTNL, 10061 }, 10062 { 10063 .cmd = NL80211_CMD_SET_INTERFACE, 10064 .doit = nl80211_set_interface, 10065 .policy = nl80211_policy, 10066 .flags = GENL_ADMIN_PERM, 10067 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10068 NL80211_FLAG_NEED_RTNL, 10069 }, 10070 { 10071 .cmd = NL80211_CMD_NEW_INTERFACE, 10072 .doit = nl80211_new_interface, 10073 .policy = nl80211_policy, 10074 .flags = GENL_ADMIN_PERM, 10075 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10076 NL80211_FLAG_NEED_RTNL, 10077 }, 10078 { 10079 .cmd = NL80211_CMD_DEL_INTERFACE, 10080 .doit = nl80211_del_interface, 10081 .policy = nl80211_policy, 10082 .flags = GENL_ADMIN_PERM, 10083 .internal_flags = NL80211_FLAG_NEED_WDEV | 10084 NL80211_FLAG_NEED_RTNL, 10085 }, 10086 { 10087 .cmd = NL80211_CMD_GET_KEY, 10088 .doit = nl80211_get_key, 10089 .policy = nl80211_policy, 10090 .flags = GENL_ADMIN_PERM, 10091 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10092 NL80211_FLAG_NEED_RTNL, 10093 }, 10094 { 10095 .cmd = NL80211_CMD_SET_KEY, 10096 .doit = nl80211_set_key, 10097 .policy = nl80211_policy, 10098 .flags = GENL_ADMIN_PERM, 10099 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10100 NL80211_FLAG_NEED_RTNL | 10101 NL80211_FLAG_CLEAR_SKB, 10102 }, 10103 { 10104 .cmd = NL80211_CMD_NEW_KEY, 10105 .doit = nl80211_new_key, 10106 .policy = nl80211_policy, 10107 .flags = GENL_ADMIN_PERM, 10108 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10109 NL80211_FLAG_NEED_RTNL | 10110 NL80211_FLAG_CLEAR_SKB, 10111 }, 10112 { 10113 .cmd = NL80211_CMD_DEL_KEY, 10114 .doit = nl80211_del_key, 10115 .policy = nl80211_policy, 10116 .flags = GENL_ADMIN_PERM, 10117 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10118 NL80211_FLAG_NEED_RTNL, 10119 }, 10120 { 10121 .cmd = NL80211_CMD_SET_BEACON, 10122 .policy = nl80211_policy, 10123 .flags = GENL_ADMIN_PERM, 10124 .doit = nl80211_set_beacon, 10125 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10126 NL80211_FLAG_NEED_RTNL, 10127 }, 10128 { 10129 .cmd = NL80211_CMD_START_AP, 10130 .policy = nl80211_policy, 10131 .flags = GENL_ADMIN_PERM, 10132 .doit = nl80211_start_ap, 10133 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10134 NL80211_FLAG_NEED_RTNL, 10135 }, 10136 { 10137 .cmd = NL80211_CMD_STOP_AP, 10138 .policy = nl80211_policy, 10139 .flags = GENL_ADMIN_PERM, 10140 .doit = nl80211_stop_ap, 10141 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10142 NL80211_FLAG_NEED_RTNL, 10143 }, 10144 { 10145 .cmd = NL80211_CMD_GET_STATION, 10146 .doit = nl80211_get_station, 10147 .dumpit = nl80211_dump_station, 10148 .policy = nl80211_policy, 10149 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10150 NL80211_FLAG_NEED_RTNL, 10151 }, 10152 { 10153 .cmd = NL80211_CMD_SET_STATION, 10154 .doit = nl80211_set_station, 10155 .policy = nl80211_policy, 10156 .flags = GENL_ADMIN_PERM, 10157 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10158 NL80211_FLAG_NEED_RTNL, 10159 }, 10160 { 10161 .cmd = NL80211_CMD_NEW_STATION, 10162 .doit = nl80211_new_station, 10163 .policy = nl80211_policy, 10164 .flags = GENL_ADMIN_PERM, 10165 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10166 NL80211_FLAG_NEED_RTNL, 10167 }, 10168 { 10169 .cmd = NL80211_CMD_DEL_STATION, 10170 .doit = nl80211_del_station, 10171 .policy = nl80211_policy, 10172 .flags = GENL_ADMIN_PERM, 10173 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10174 NL80211_FLAG_NEED_RTNL, 10175 }, 10176 { 10177 .cmd = NL80211_CMD_GET_MPATH, 10178 .doit = nl80211_get_mpath, 10179 .dumpit = nl80211_dump_mpath, 10180 .policy = nl80211_policy, 10181 .flags = GENL_ADMIN_PERM, 10182 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10183 NL80211_FLAG_NEED_RTNL, 10184 }, 10185 { 10186 .cmd = NL80211_CMD_GET_MPP, 10187 .doit = nl80211_get_mpp, 10188 .dumpit = nl80211_dump_mpp, 10189 .policy = nl80211_policy, 10190 .flags = GENL_ADMIN_PERM, 10191 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10192 NL80211_FLAG_NEED_RTNL, 10193 }, 10194 { 10195 .cmd = NL80211_CMD_SET_MPATH, 10196 .doit = nl80211_set_mpath, 10197 .policy = nl80211_policy, 10198 .flags = GENL_ADMIN_PERM, 10199 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10200 NL80211_FLAG_NEED_RTNL, 10201 }, 10202 { 10203 .cmd = NL80211_CMD_NEW_MPATH, 10204 .doit = nl80211_new_mpath, 10205 .policy = nl80211_policy, 10206 .flags = GENL_ADMIN_PERM, 10207 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10208 NL80211_FLAG_NEED_RTNL, 10209 }, 10210 { 10211 .cmd = NL80211_CMD_DEL_MPATH, 10212 .doit = nl80211_del_mpath, 10213 .policy = nl80211_policy, 10214 .flags = GENL_ADMIN_PERM, 10215 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10216 NL80211_FLAG_NEED_RTNL, 10217 }, 10218 { 10219 .cmd = NL80211_CMD_SET_BSS, 10220 .doit = nl80211_set_bss, 10221 .policy = nl80211_policy, 10222 .flags = GENL_ADMIN_PERM, 10223 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10224 NL80211_FLAG_NEED_RTNL, 10225 }, 10226 { 10227 .cmd = NL80211_CMD_GET_REG, 10228 .doit = nl80211_get_reg, 10229 .policy = nl80211_policy, 10230 .internal_flags = NL80211_FLAG_NEED_RTNL, 10231 /* can be retrieved by unprivileged users */ 10232 }, 10233 { 10234 .cmd = NL80211_CMD_SET_REG, 10235 .doit = nl80211_set_reg, 10236 .policy = nl80211_policy, 10237 .flags = GENL_ADMIN_PERM, 10238 .internal_flags = NL80211_FLAG_NEED_RTNL, 10239 }, 10240 { 10241 .cmd = NL80211_CMD_REQ_SET_REG, 10242 .doit = nl80211_req_set_reg, 10243 .policy = nl80211_policy, 10244 .flags = GENL_ADMIN_PERM, 10245 }, 10246 { 10247 .cmd = NL80211_CMD_GET_MESH_CONFIG, 10248 .doit = nl80211_get_mesh_config, 10249 .policy = nl80211_policy, 10250 /* can be retrieved by unprivileged users */ 10251 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10252 NL80211_FLAG_NEED_RTNL, 10253 }, 10254 { 10255 .cmd = NL80211_CMD_SET_MESH_CONFIG, 10256 .doit = nl80211_update_mesh_config, 10257 .policy = nl80211_policy, 10258 .flags = GENL_ADMIN_PERM, 10259 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10260 NL80211_FLAG_NEED_RTNL, 10261 }, 10262 { 10263 .cmd = NL80211_CMD_TRIGGER_SCAN, 10264 .doit = nl80211_trigger_scan, 10265 .policy = nl80211_policy, 10266 .flags = GENL_ADMIN_PERM, 10267 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10268 NL80211_FLAG_NEED_RTNL, 10269 }, 10270 { 10271 .cmd = NL80211_CMD_GET_SCAN, 10272 .policy = nl80211_policy, 10273 .dumpit = nl80211_dump_scan, 10274 }, 10275 { 10276 .cmd = NL80211_CMD_START_SCHED_SCAN, 10277 .doit = nl80211_start_sched_scan, 10278 .policy = nl80211_policy, 10279 .flags = GENL_ADMIN_PERM, 10280 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10281 NL80211_FLAG_NEED_RTNL, 10282 }, 10283 { 10284 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 10285 .doit = nl80211_stop_sched_scan, 10286 .policy = nl80211_policy, 10287 .flags = GENL_ADMIN_PERM, 10288 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10289 NL80211_FLAG_NEED_RTNL, 10290 }, 10291 { 10292 .cmd = NL80211_CMD_AUTHENTICATE, 10293 .doit = nl80211_authenticate, 10294 .policy = nl80211_policy, 10295 .flags = GENL_ADMIN_PERM, 10296 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10297 NL80211_FLAG_NEED_RTNL | 10298 NL80211_FLAG_CLEAR_SKB, 10299 }, 10300 { 10301 .cmd = NL80211_CMD_ASSOCIATE, 10302 .doit = nl80211_associate, 10303 .policy = nl80211_policy, 10304 .flags = GENL_ADMIN_PERM, 10305 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10306 NL80211_FLAG_NEED_RTNL, 10307 }, 10308 { 10309 .cmd = NL80211_CMD_DEAUTHENTICATE, 10310 .doit = nl80211_deauthenticate, 10311 .policy = nl80211_policy, 10312 .flags = GENL_ADMIN_PERM, 10313 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10314 NL80211_FLAG_NEED_RTNL, 10315 }, 10316 { 10317 .cmd = NL80211_CMD_DISASSOCIATE, 10318 .doit = nl80211_disassociate, 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_JOIN_IBSS, 10326 .doit = nl80211_join_ibss, 10327 .policy = nl80211_policy, 10328 .flags = GENL_ADMIN_PERM, 10329 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10330 NL80211_FLAG_NEED_RTNL, 10331 }, 10332 { 10333 .cmd = NL80211_CMD_LEAVE_IBSS, 10334 .doit = nl80211_leave_ibss, 10335 .policy = nl80211_policy, 10336 .flags = GENL_ADMIN_PERM, 10337 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10338 NL80211_FLAG_NEED_RTNL, 10339 }, 10340 #ifdef CONFIG_NL80211_TESTMODE 10341 { 10342 .cmd = NL80211_CMD_TESTMODE, 10343 .doit = nl80211_testmode_do, 10344 .dumpit = nl80211_testmode_dump, 10345 .policy = nl80211_policy, 10346 .flags = GENL_ADMIN_PERM, 10347 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10348 NL80211_FLAG_NEED_RTNL, 10349 }, 10350 #endif 10351 { 10352 .cmd = NL80211_CMD_CONNECT, 10353 .doit = nl80211_connect, 10354 .policy = nl80211_policy, 10355 .flags = GENL_ADMIN_PERM, 10356 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10357 NL80211_FLAG_NEED_RTNL, 10358 }, 10359 { 10360 .cmd = NL80211_CMD_DISCONNECT, 10361 .doit = nl80211_disconnect, 10362 .policy = nl80211_policy, 10363 .flags = GENL_ADMIN_PERM, 10364 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10365 NL80211_FLAG_NEED_RTNL, 10366 }, 10367 { 10368 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 10369 .doit = nl80211_wiphy_netns, 10370 .policy = nl80211_policy, 10371 .flags = GENL_ADMIN_PERM, 10372 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10373 NL80211_FLAG_NEED_RTNL, 10374 }, 10375 { 10376 .cmd = NL80211_CMD_GET_SURVEY, 10377 .policy = nl80211_policy, 10378 .dumpit = nl80211_dump_survey, 10379 }, 10380 { 10381 .cmd = NL80211_CMD_SET_PMKSA, 10382 .doit = nl80211_setdel_pmksa, 10383 .policy = nl80211_policy, 10384 .flags = GENL_ADMIN_PERM, 10385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10386 NL80211_FLAG_NEED_RTNL, 10387 }, 10388 { 10389 .cmd = NL80211_CMD_DEL_PMKSA, 10390 .doit = nl80211_setdel_pmksa, 10391 .policy = nl80211_policy, 10392 .flags = GENL_ADMIN_PERM, 10393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10394 NL80211_FLAG_NEED_RTNL, 10395 }, 10396 { 10397 .cmd = NL80211_CMD_FLUSH_PMKSA, 10398 .doit = nl80211_flush_pmksa, 10399 .policy = nl80211_policy, 10400 .flags = GENL_ADMIN_PERM, 10401 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10402 NL80211_FLAG_NEED_RTNL, 10403 }, 10404 { 10405 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 10406 .doit = nl80211_remain_on_channel, 10407 .policy = nl80211_policy, 10408 .flags = GENL_ADMIN_PERM, 10409 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10410 NL80211_FLAG_NEED_RTNL, 10411 }, 10412 { 10413 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 10414 .doit = nl80211_cancel_remain_on_channel, 10415 .policy = nl80211_policy, 10416 .flags = GENL_ADMIN_PERM, 10417 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10418 NL80211_FLAG_NEED_RTNL, 10419 }, 10420 { 10421 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 10422 .doit = nl80211_set_tx_bitrate_mask, 10423 .policy = nl80211_policy, 10424 .flags = GENL_ADMIN_PERM, 10425 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10426 NL80211_FLAG_NEED_RTNL, 10427 }, 10428 { 10429 .cmd = NL80211_CMD_REGISTER_FRAME, 10430 .doit = nl80211_register_mgmt, 10431 .policy = nl80211_policy, 10432 .flags = GENL_ADMIN_PERM, 10433 .internal_flags = NL80211_FLAG_NEED_WDEV | 10434 NL80211_FLAG_NEED_RTNL, 10435 }, 10436 { 10437 .cmd = NL80211_CMD_FRAME, 10438 .doit = nl80211_tx_mgmt, 10439 .policy = nl80211_policy, 10440 .flags = GENL_ADMIN_PERM, 10441 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10442 NL80211_FLAG_NEED_RTNL, 10443 }, 10444 { 10445 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 10446 .doit = nl80211_tx_mgmt_cancel_wait, 10447 .policy = nl80211_policy, 10448 .flags = GENL_ADMIN_PERM, 10449 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10450 NL80211_FLAG_NEED_RTNL, 10451 }, 10452 { 10453 .cmd = NL80211_CMD_SET_POWER_SAVE, 10454 .doit = nl80211_set_power_save, 10455 .policy = nl80211_policy, 10456 .flags = GENL_ADMIN_PERM, 10457 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10458 NL80211_FLAG_NEED_RTNL, 10459 }, 10460 { 10461 .cmd = NL80211_CMD_GET_POWER_SAVE, 10462 .doit = nl80211_get_power_save, 10463 .policy = nl80211_policy, 10464 /* can be retrieved by unprivileged users */ 10465 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10466 NL80211_FLAG_NEED_RTNL, 10467 }, 10468 { 10469 .cmd = NL80211_CMD_SET_CQM, 10470 .doit = nl80211_set_cqm, 10471 .policy = nl80211_policy, 10472 .flags = GENL_ADMIN_PERM, 10473 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10474 NL80211_FLAG_NEED_RTNL, 10475 }, 10476 { 10477 .cmd = NL80211_CMD_SET_CHANNEL, 10478 .doit = nl80211_set_channel, 10479 .policy = nl80211_policy, 10480 .flags = GENL_ADMIN_PERM, 10481 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10482 NL80211_FLAG_NEED_RTNL, 10483 }, 10484 { 10485 .cmd = NL80211_CMD_SET_WDS_PEER, 10486 .doit = nl80211_set_wds_peer, 10487 .policy = nl80211_policy, 10488 .flags = GENL_ADMIN_PERM, 10489 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10490 NL80211_FLAG_NEED_RTNL, 10491 }, 10492 { 10493 .cmd = NL80211_CMD_JOIN_MESH, 10494 .doit = nl80211_join_mesh, 10495 .policy = nl80211_policy, 10496 .flags = GENL_ADMIN_PERM, 10497 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10498 NL80211_FLAG_NEED_RTNL, 10499 }, 10500 { 10501 .cmd = NL80211_CMD_LEAVE_MESH, 10502 .doit = nl80211_leave_mesh, 10503 .policy = nl80211_policy, 10504 .flags = GENL_ADMIN_PERM, 10505 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10506 NL80211_FLAG_NEED_RTNL, 10507 }, 10508 { 10509 .cmd = NL80211_CMD_JOIN_OCB, 10510 .doit = nl80211_join_ocb, 10511 .policy = nl80211_policy, 10512 .flags = GENL_ADMIN_PERM, 10513 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10514 NL80211_FLAG_NEED_RTNL, 10515 }, 10516 { 10517 .cmd = NL80211_CMD_LEAVE_OCB, 10518 .doit = nl80211_leave_ocb, 10519 .policy = nl80211_policy, 10520 .flags = GENL_ADMIN_PERM, 10521 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10522 NL80211_FLAG_NEED_RTNL, 10523 }, 10524 #ifdef CONFIG_PM 10525 { 10526 .cmd = NL80211_CMD_GET_WOWLAN, 10527 .doit = nl80211_get_wowlan, 10528 .policy = nl80211_policy, 10529 /* can be retrieved by unprivileged users */ 10530 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10531 NL80211_FLAG_NEED_RTNL, 10532 }, 10533 { 10534 .cmd = NL80211_CMD_SET_WOWLAN, 10535 .doit = nl80211_set_wowlan, 10536 .policy = nl80211_policy, 10537 .flags = GENL_ADMIN_PERM, 10538 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10539 NL80211_FLAG_NEED_RTNL, 10540 }, 10541 #endif 10542 { 10543 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 10544 .doit = nl80211_set_rekey_data, 10545 .policy = nl80211_policy, 10546 .flags = GENL_ADMIN_PERM, 10547 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10548 NL80211_FLAG_NEED_RTNL | 10549 NL80211_FLAG_CLEAR_SKB, 10550 }, 10551 { 10552 .cmd = NL80211_CMD_TDLS_MGMT, 10553 .doit = nl80211_tdls_mgmt, 10554 .policy = nl80211_policy, 10555 .flags = GENL_ADMIN_PERM, 10556 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10557 NL80211_FLAG_NEED_RTNL, 10558 }, 10559 { 10560 .cmd = NL80211_CMD_TDLS_OPER, 10561 .doit = nl80211_tdls_oper, 10562 .policy = nl80211_policy, 10563 .flags = GENL_ADMIN_PERM, 10564 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10565 NL80211_FLAG_NEED_RTNL, 10566 }, 10567 { 10568 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 10569 .doit = nl80211_register_unexpected_frame, 10570 .policy = nl80211_policy, 10571 .flags = GENL_ADMIN_PERM, 10572 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10573 NL80211_FLAG_NEED_RTNL, 10574 }, 10575 { 10576 .cmd = NL80211_CMD_PROBE_CLIENT, 10577 .doit = nl80211_probe_client, 10578 .policy = nl80211_policy, 10579 .flags = GENL_ADMIN_PERM, 10580 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10581 NL80211_FLAG_NEED_RTNL, 10582 }, 10583 { 10584 .cmd = NL80211_CMD_REGISTER_BEACONS, 10585 .doit = nl80211_register_beacons, 10586 .policy = nl80211_policy, 10587 .flags = GENL_ADMIN_PERM, 10588 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10589 NL80211_FLAG_NEED_RTNL, 10590 }, 10591 { 10592 .cmd = NL80211_CMD_SET_NOACK_MAP, 10593 .doit = nl80211_set_noack_map, 10594 .policy = nl80211_policy, 10595 .flags = GENL_ADMIN_PERM, 10596 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10597 NL80211_FLAG_NEED_RTNL, 10598 }, 10599 { 10600 .cmd = NL80211_CMD_START_P2P_DEVICE, 10601 .doit = nl80211_start_p2p_device, 10602 .policy = nl80211_policy, 10603 .flags = GENL_ADMIN_PERM, 10604 .internal_flags = NL80211_FLAG_NEED_WDEV | 10605 NL80211_FLAG_NEED_RTNL, 10606 }, 10607 { 10608 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 10609 .doit = nl80211_stop_p2p_device, 10610 .policy = nl80211_policy, 10611 .flags = GENL_ADMIN_PERM, 10612 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10613 NL80211_FLAG_NEED_RTNL, 10614 }, 10615 { 10616 .cmd = NL80211_CMD_SET_MCAST_RATE, 10617 .doit = nl80211_set_mcast_rate, 10618 .policy = nl80211_policy, 10619 .flags = GENL_ADMIN_PERM, 10620 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10621 NL80211_FLAG_NEED_RTNL, 10622 }, 10623 { 10624 .cmd = NL80211_CMD_SET_MAC_ACL, 10625 .doit = nl80211_set_mac_acl, 10626 .policy = nl80211_policy, 10627 .flags = GENL_ADMIN_PERM, 10628 .internal_flags = NL80211_FLAG_NEED_NETDEV | 10629 NL80211_FLAG_NEED_RTNL, 10630 }, 10631 { 10632 .cmd = NL80211_CMD_RADAR_DETECT, 10633 .doit = nl80211_start_radar_detection, 10634 .policy = nl80211_policy, 10635 .flags = GENL_ADMIN_PERM, 10636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10637 NL80211_FLAG_NEED_RTNL, 10638 }, 10639 { 10640 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 10641 .doit = nl80211_get_protocol_features, 10642 .policy = nl80211_policy, 10643 }, 10644 { 10645 .cmd = NL80211_CMD_UPDATE_FT_IES, 10646 .doit = nl80211_update_ft_ies, 10647 .policy = nl80211_policy, 10648 .flags = GENL_ADMIN_PERM, 10649 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10650 NL80211_FLAG_NEED_RTNL, 10651 }, 10652 { 10653 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 10654 .doit = nl80211_crit_protocol_start, 10655 .policy = nl80211_policy, 10656 .flags = GENL_ADMIN_PERM, 10657 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10658 NL80211_FLAG_NEED_RTNL, 10659 }, 10660 { 10661 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 10662 .doit = nl80211_crit_protocol_stop, 10663 .policy = nl80211_policy, 10664 .flags = GENL_ADMIN_PERM, 10665 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 10666 NL80211_FLAG_NEED_RTNL, 10667 }, 10668 { 10669 .cmd = NL80211_CMD_GET_COALESCE, 10670 .doit = nl80211_get_coalesce, 10671 .policy = nl80211_policy, 10672 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10673 NL80211_FLAG_NEED_RTNL, 10674 }, 10675 { 10676 .cmd = NL80211_CMD_SET_COALESCE, 10677 .doit = nl80211_set_coalesce, 10678 .policy = nl80211_policy, 10679 .flags = GENL_ADMIN_PERM, 10680 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10681 NL80211_FLAG_NEED_RTNL, 10682 }, 10683 { 10684 .cmd = NL80211_CMD_CHANNEL_SWITCH, 10685 .doit = nl80211_channel_switch, 10686 .policy = nl80211_policy, 10687 .flags = GENL_ADMIN_PERM, 10688 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10689 NL80211_FLAG_NEED_RTNL, 10690 }, 10691 { 10692 .cmd = NL80211_CMD_VENDOR, 10693 .doit = nl80211_vendor_cmd, 10694 .policy = nl80211_policy, 10695 .flags = GENL_ADMIN_PERM, 10696 .internal_flags = NL80211_FLAG_NEED_WIPHY | 10697 NL80211_FLAG_NEED_RTNL, 10698 }, 10699 { 10700 .cmd = NL80211_CMD_SET_QOS_MAP, 10701 .doit = nl80211_set_qos_map, 10702 .policy = nl80211_policy, 10703 .flags = GENL_ADMIN_PERM, 10704 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10705 NL80211_FLAG_NEED_RTNL, 10706 }, 10707 { 10708 .cmd = NL80211_CMD_ADD_TX_TS, 10709 .doit = nl80211_add_tx_ts, 10710 .policy = nl80211_policy, 10711 .flags = GENL_ADMIN_PERM, 10712 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10713 NL80211_FLAG_NEED_RTNL, 10714 }, 10715 { 10716 .cmd = NL80211_CMD_DEL_TX_TS, 10717 .doit = nl80211_del_tx_ts, 10718 .policy = nl80211_policy, 10719 .flags = GENL_ADMIN_PERM, 10720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 10721 NL80211_FLAG_NEED_RTNL, 10722 }, 10723 { 10724 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 10725 .doit = nl80211_tdls_channel_switch, 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_TDLS_CANCEL_CHANNEL_SWITCH, 10733 .doit = nl80211_tdls_cancel_channel_switch, 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 10741 /* notification functions */ 10742 10743 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 10744 enum nl80211_commands cmd) 10745 { 10746 struct sk_buff *msg; 10747 struct nl80211_dump_wiphy_state state = {}; 10748 10749 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 10750 cmd != NL80211_CMD_DEL_WIPHY); 10751 10752 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10753 if (!msg) 10754 return; 10755 10756 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 10757 nlmsg_free(msg); 10758 return; 10759 } 10760 10761 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10762 NL80211_MCGRP_CONFIG, GFP_KERNEL); 10763 } 10764 10765 static int nl80211_add_scan_req(struct sk_buff *msg, 10766 struct cfg80211_registered_device *rdev) 10767 { 10768 struct cfg80211_scan_request *req = rdev->scan_req; 10769 struct nlattr *nest; 10770 int i; 10771 10772 if (WARN_ON(!req)) 10773 return 0; 10774 10775 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 10776 if (!nest) 10777 goto nla_put_failure; 10778 for (i = 0; i < req->n_ssids; i++) { 10779 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 10780 goto nla_put_failure; 10781 } 10782 nla_nest_end(msg, nest); 10783 10784 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 10785 if (!nest) 10786 goto nla_put_failure; 10787 for (i = 0; i < req->n_channels; i++) { 10788 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 10789 goto nla_put_failure; 10790 } 10791 nla_nest_end(msg, nest); 10792 10793 if (req->ie && 10794 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 10795 goto nla_put_failure; 10796 10797 if (req->flags && 10798 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 10799 goto nla_put_failure; 10800 10801 return 0; 10802 nla_put_failure: 10803 return -ENOBUFS; 10804 } 10805 10806 static int nl80211_send_scan_msg(struct sk_buff *msg, 10807 struct cfg80211_registered_device *rdev, 10808 struct wireless_dev *wdev, 10809 u32 portid, u32 seq, int flags, 10810 u32 cmd) 10811 { 10812 void *hdr; 10813 10814 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 10815 if (!hdr) 10816 return -1; 10817 10818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10819 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 10820 wdev->netdev->ifindex)) || 10821 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 10822 goto nla_put_failure; 10823 10824 /* ignore errors and send incomplete event anyway */ 10825 nl80211_add_scan_req(msg, rdev); 10826 10827 return genlmsg_end(msg, hdr); 10828 10829 nla_put_failure: 10830 genlmsg_cancel(msg, hdr); 10831 return -EMSGSIZE; 10832 } 10833 10834 static int 10835 nl80211_send_sched_scan_msg(struct sk_buff *msg, 10836 struct cfg80211_registered_device *rdev, 10837 struct net_device *netdev, 10838 u32 portid, u32 seq, int flags, u32 cmd) 10839 { 10840 void *hdr; 10841 10842 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 10843 if (!hdr) 10844 return -1; 10845 10846 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10847 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 10848 goto nla_put_failure; 10849 10850 return genlmsg_end(msg, hdr); 10851 10852 nla_put_failure: 10853 genlmsg_cancel(msg, hdr); 10854 return -EMSGSIZE; 10855 } 10856 10857 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 10858 struct wireless_dev *wdev) 10859 { 10860 struct sk_buff *msg; 10861 10862 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10863 if (!msg) 10864 return; 10865 10866 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 10867 NL80211_CMD_TRIGGER_SCAN) < 0) { 10868 nlmsg_free(msg); 10869 return; 10870 } 10871 10872 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10873 NL80211_MCGRP_SCAN, GFP_KERNEL); 10874 } 10875 10876 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 10877 struct wireless_dev *wdev, bool aborted) 10878 { 10879 struct sk_buff *msg; 10880 10881 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10882 if (!msg) 10883 return NULL; 10884 10885 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 10886 aborted ? NL80211_CMD_SCAN_ABORTED : 10887 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 10888 nlmsg_free(msg); 10889 return NULL; 10890 } 10891 10892 return msg; 10893 } 10894 10895 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 10896 struct sk_buff *msg) 10897 { 10898 if (!msg) 10899 return; 10900 10901 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10902 NL80211_MCGRP_SCAN, GFP_KERNEL); 10903 } 10904 10905 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 10906 struct net_device *netdev) 10907 { 10908 struct sk_buff *msg; 10909 10910 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10911 if (!msg) 10912 return; 10913 10914 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 10915 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 10916 nlmsg_free(msg); 10917 return; 10918 } 10919 10920 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10921 NL80211_MCGRP_SCAN, GFP_KERNEL); 10922 } 10923 10924 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 10925 struct net_device *netdev, u32 cmd) 10926 { 10927 struct sk_buff *msg; 10928 10929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10930 if (!msg) 10931 return; 10932 10933 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 10934 nlmsg_free(msg); 10935 return; 10936 } 10937 10938 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 10939 NL80211_MCGRP_SCAN, GFP_KERNEL); 10940 } 10941 10942 /* 10943 * This can happen on global regulatory changes or device specific settings 10944 * based on custom world regulatory domains. 10945 */ 10946 void nl80211_send_reg_change_event(struct regulatory_request *request) 10947 { 10948 struct sk_buff *msg; 10949 void *hdr; 10950 10951 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10952 if (!msg) 10953 return; 10954 10955 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_CHANGE); 10956 if (!hdr) { 10957 nlmsg_free(msg); 10958 return; 10959 } 10960 10961 /* Userspace can always count this one always being set */ 10962 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 10963 goto nla_put_failure; 10964 10965 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 10966 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10967 NL80211_REGDOM_TYPE_WORLD)) 10968 goto nla_put_failure; 10969 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 10970 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10971 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 10972 goto nla_put_failure; 10973 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 10974 request->intersect) { 10975 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10976 NL80211_REGDOM_TYPE_INTERSECTION)) 10977 goto nla_put_failure; 10978 } else { 10979 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 10980 NL80211_REGDOM_TYPE_COUNTRY) || 10981 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 10982 request->alpha2)) 10983 goto nla_put_failure; 10984 } 10985 10986 if (request->wiphy_idx != WIPHY_IDX_INVALID && 10987 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 10988 goto nla_put_failure; 10989 10990 genlmsg_end(msg, hdr); 10991 10992 rcu_read_lock(); 10993 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 10994 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 10995 rcu_read_unlock(); 10996 10997 return; 10998 10999 nla_put_failure: 11000 genlmsg_cancel(msg, hdr); 11001 nlmsg_free(msg); 11002 } 11003 11004 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 11005 struct net_device *netdev, 11006 const u8 *buf, size_t len, 11007 enum nl80211_commands cmd, gfp_t gfp, 11008 int uapsd_queues) 11009 { 11010 struct sk_buff *msg; 11011 void *hdr; 11012 11013 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11014 if (!msg) 11015 return; 11016 11017 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11018 if (!hdr) { 11019 nlmsg_free(msg); 11020 return; 11021 } 11022 11023 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11024 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11025 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 11026 goto nla_put_failure; 11027 11028 if (uapsd_queues >= 0) { 11029 struct nlattr *nla_wmm = 11030 nla_nest_start(msg, NL80211_ATTR_STA_WME); 11031 if (!nla_wmm) 11032 goto nla_put_failure; 11033 11034 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 11035 uapsd_queues)) 11036 goto nla_put_failure; 11037 11038 nla_nest_end(msg, nla_wmm); 11039 } 11040 11041 genlmsg_end(msg, hdr); 11042 11043 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11044 NL80211_MCGRP_MLME, gfp); 11045 return; 11046 11047 nla_put_failure: 11048 genlmsg_cancel(msg, hdr); 11049 nlmsg_free(msg); 11050 } 11051 11052 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 11053 struct net_device *netdev, const u8 *buf, 11054 size_t len, gfp_t gfp) 11055 { 11056 nl80211_send_mlme_event(rdev, netdev, buf, len, 11057 NL80211_CMD_AUTHENTICATE, gfp, -1); 11058 } 11059 11060 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 11061 struct net_device *netdev, const u8 *buf, 11062 size_t len, gfp_t gfp, int uapsd_queues) 11063 { 11064 nl80211_send_mlme_event(rdev, netdev, buf, len, 11065 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 11066 } 11067 11068 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 11069 struct net_device *netdev, const u8 *buf, 11070 size_t len, gfp_t gfp) 11071 { 11072 nl80211_send_mlme_event(rdev, netdev, buf, len, 11073 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 11074 } 11075 11076 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 11077 struct net_device *netdev, const u8 *buf, 11078 size_t len, gfp_t gfp) 11079 { 11080 nl80211_send_mlme_event(rdev, netdev, buf, len, 11081 NL80211_CMD_DISASSOCIATE, gfp, -1); 11082 } 11083 11084 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 11085 size_t len) 11086 { 11087 struct wireless_dev *wdev = dev->ieee80211_ptr; 11088 struct wiphy *wiphy = wdev->wiphy; 11089 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11090 const struct ieee80211_mgmt *mgmt = (void *)buf; 11091 u32 cmd; 11092 11093 if (WARN_ON(len < 2)) 11094 return; 11095 11096 if (ieee80211_is_deauth(mgmt->frame_control)) 11097 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 11098 else 11099 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 11100 11101 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 11102 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 11103 } 11104 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 11105 11106 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 11107 struct net_device *netdev, int cmd, 11108 const u8 *addr, gfp_t gfp) 11109 { 11110 struct sk_buff *msg; 11111 void *hdr; 11112 11113 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11114 if (!msg) 11115 return; 11116 11117 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11118 if (!hdr) { 11119 nlmsg_free(msg); 11120 return; 11121 } 11122 11123 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11124 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11125 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 11126 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11127 goto nla_put_failure; 11128 11129 genlmsg_end(msg, hdr); 11130 11131 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11132 NL80211_MCGRP_MLME, gfp); 11133 return; 11134 11135 nla_put_failure: 11136 genlmsg_cancel(msg, hdr); 11137 nlmsg_free(msg); 11138 } 11139 11140 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 11141 struct net_device *netdev, const u8 *addr, 11142 gfp_t gfp) 11143 { 11144 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 11145 addr, gfp); 11146 } 11147 11148 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 11149 struct net_device *netdev, const u8 *addr, 11150 gfp_t gfp) 11151 { 11152 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 11153 addr, gfp); 11154 } 11155 11156 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 11157 struct net_device *netdev, const u8 *bssid, 11158 const u8 *req_ie, size_t req_ie_len, 11159 const u8 *resp_ie, size_t resp_ie_len, 11160 u16 status, gfp_t gfp) 11161 { 11162 struct sk_buff *msg; 11163 void *hdr; 11164 11165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11166 if (!msg) 11167 return; 11168 11169 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 11170 if (!hdr) { 11171 nlmsg_free(msg); 11172 return; 11173 } 11174 11175 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11176 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11177 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 11178 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, status) || 11179 (req_ie && 11180 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11181 (resp_ie && 11182 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11183 goto nla_put_failure; 11184 11185 genlmsg_end(msg, hdr); 11186 11187 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11188 NL80211_MCGRP_MLME, gfp); 11189 return; 11190 11191 nla_put_failure: 11192 genlmsg_cancel(msg, hdr); 11193 nlmsg_free(msg); 11194 11195 } 11196 11197 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 11198 struct net_device *netdev, const u8 *bssid, 11199 const u8 *req_ie, size_t req_ie_len, 11200 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 11201 { 11202 struct sk_buff *msg; 11203 void *hdr; 11204 11205 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11206 if (!msg) 11207 return; 11208 11209 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 11210 if (!hdr) { 11211 nlmsg_free(msg); 11212 return; 11213 } 11214 11215 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11216 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11217 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 11218 (req_ie && 11219 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 11220 (resp_ie && 11221 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 11222 goto nla_put_failure; 11223 11224 genlmsg_end(msg, hdr); 11225 11226 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11227 NL80211_MCGRP_MLME, gfp); 11228 return; 11229 11230 nla_put_failure: 11231 genlmsg_cancel(msg, hdr); 11232 nlmsg_free(msg); 11233 11234 } 11235 11236 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 11237 struct net_device *netdev, u16 reason, 11238 const u8 *ie, size_t ie_len, bool from_ap) 11239 { 11240 struct sk_buff *msg; 11241 void *hdr; 11242 11243 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11244 if (!msg) 11245 return; 11246 11247 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 11248 if (!hdr) { 11249 nlmsg_free(msg); 11250 return; 11251 } 11252 11253 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11254 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11255 (from_ap && reason && 11256 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 11257 (from_ap && 11258 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 11259 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 11260 goto nla_put_failure; 11261 11262 genlmsg_end(msg, hdr); 11263 11264 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11265 NL80211_MCGRP_MLME, GFP_KERNEL); 11266 return; 11267 11268 nla_put_failure: 11269 genlmsg_cancel(msg, hdr); 11270 nlmsg_free(msg); 11271 11272 } 11273 11274 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 11275 struct net_device *netdev, const u8 *bssid, 11276 gfp_t gfp) 11277 { 11278 struct sk_buff *msg; 11279 void *hdr; 11280 11281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11282 if (!msg) 11283 return; 11284 11285 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 11286 if (!hdr) { 11287 nlmsg_free(msg); 11288 return; 11289 } 11290 11291 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11292 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11293 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11294 goto nla_put_failure; 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 cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 11308 const u8* ie, u8 ie_len, gfp_t gfp) 11309 { 11310 struct wireless_dev *wdev = dev->ieee80211_ptr; 11311 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11312 struct sk_buff *msg; 11313 void *hdr; 11314 11315 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 11316 return; 11317 11318 trace_cfg80211_notify_new_peer_candidate(dev, addr); 11319 11320 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11321 if (!msg) 11322 return; 11323 11324 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 11325 if (!hdr) { 11326 nlmsg_free(msg); 11327 return; 11328 } 11329 11330 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11331 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11332 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 11333 (ie_len && ie && 11334 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 11335 goto nla_put_failure; 11336 11337 genlmsg_end(msg, hdr); 11338 11339 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11340 NL80211_MCGRP_MLME, gfp); 11341 return; 11342 11343 nla_put_failure: 11344 genlmsg_cancel(msg, hdr); 11345 nlmsg_free(msg); 11346 } 11347 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 11348 11349 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 11350 struct net_device *netdev, const u8 *addr, 11351 enum nl80211_key_type key_type, int key_id, 11352 const u8 *tsc, gfp_t gfp) 11353 { 11354 struct sk_buff *msg; 11355 void *hdr; 11356 11357 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11358 if (!msg) 11359 return; 11360 11361 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 11362 if (!hdr) { 11363 nlmsg_free(msg); 11364 return; 11365 } 11366 11367 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11368 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11369 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 11370 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 11371 (key_id != -1 && 11372 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 11373 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 11374 goto nla_put_failure; 11375 11376 genlmsg_end(msg, hdr); 11377 11378 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11379 NL80211_MCGRP_MLME, gfp); 11380 return; 11381 11382 nla_put_failure: 11383 genlmsg_cancel(msg, hdr); 11384 nlmsg_free(msg); 11385 } 11386 11387 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 11388 struct ieee80211_channel *channel_before, 11389 struct ieee80211_channel *channel_after) 11390 { 11391 struct sk_buff *msg; 11392 void *hdr; 11393 struct nlattr *nl_freq; 11394 11395 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 11396 if (!msg) 11397 return; 11398 11399 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 11400 if (!hdr) { 11401 nlmsg_free(msg); 11402 return; 11403 } 11404 11405 /* 11406 * Since we are applying the beacon hint to a wiphy we know its 11407 * wiphy_idx is valid 11408 */ 11409 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 11410 goto nla_put_failure; 11411 11412 /* Before */ 11413 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 11414 if (!nl_freq) 11415 goto nla_put_failure; 11416 if (nl80211_msg_put_channel(msg, channel_before, false)) 11417 goto nla_put_failure; 11418 nla_nest_end(msg, nl_freq); 11419 11420 /* After */ 11421 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 11422 if (!nl_freq) 11423 goto nla_put_failure; 11424 if (nl80211_msg_put_channel(msg, channel_after, false)) 11425 goto nla_put_failure; 11426 nla_nest_end(msg, nl_freq); 11427 11428 genlmsg_end(msg, hdr); 11429 11430 rcu_read_lock(); 11431 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 11432 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 11433 rcu_read_unlock(); 11434 11435 return; 11436 11437 nla_put_failure: 11438 genlmsg_cancel(msg, hdr); 11439 nlmsg_free(msg); 11440 } 11441 11442 static void nl80211_send_remain_on_chan_event( 11443 int cmd, struct cfg80211_registered_device *rdev, 11444 struct wireless_dev *wdev, u64 cookie, 11445 struct ieee80211_channel *chan, 11446 unsigned int duration, gfp_t gfp) 11447 { 11448 struct sk_buff *msg; 11449 void *hdr; 11450 11451 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11452 if (!msg) 11453 return; 11454 11455 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11456 if (!hdr) { 11457 nlmsg_free(msg); 11458 return; 11459 } 11460 11461 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11462 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11463 wdev->netdev->ifindex)) || 11464 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11465 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 11466 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 11467 NL80211_CHAN_NO_HT) || 11468 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie)) 11469 goto nla_put_failure; 11470 11471 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 11472 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 11473 goto nla_put_failure; 11474 11475 genlmsg_end(msg, hdr); 11476 11477 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11478 NL80211_MCGRP_MLME, gfp); 11479 return; 11480 11481 nla_put_failure: 11482 genlmsg_cancel(msg, hdr); 11483 nlmsg_free(msg); 11484 } 11485 11486 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 11487 struct ieee80211_channel *chan, 11488 unsigned int duration, gfp_t gfp) 11489 { 11490 struct wiphy *wiphy = wdev->wiphy; 11491 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11492 11493 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 11494 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 11495 rdev, wdev, cookie, chan, 11496 duration, gfp); 11497 } 11498 EXPORT_SYMBOL(cfg80211_ready_on_channel); 11499 11500 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 11501 struct ieee80211_channel *chan, 11502 gfp_t gfp) 11503 { 11504 struct wiphy *wiphy = wdev->wiphy; 11505 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11506 11507 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 11508 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11509 rdev, wdev, cookie, chan, 0, gfp); 11510 } 11511 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 11512 11513 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 11514 struct station_info *sinfo, gfp_t gfp) 11515 { 11516 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11517 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11518 struct sk_buff *msg; 11519 11520 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 11521 11522 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11523 if (!msg) 11524 return; 11525 11526 if (nl80211_send_station(msg, 0, 0, 0, 11527 rdev, dev, mac_addr, sinfo) < 0) { 11528 nlmsg_free(msg); 11529 return; 11530 } 11531 11532 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11533 NL80211_MCGRP_MLME, gfp); 11534 } 11535 EXPORT_SYMBOL(cfg80211_new_sta); 11536 11537 void cfg80211_del_sta(struct net_device *dev, const u8 *mac_addr, gfp_t gfp) 11538 { 11539 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11540 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11541 struct sk_buff *msg; 11542 void *hdr; 11543 11544 trace_cfg80211_del_sta(dev, mac_addr); 11545 11546 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11547 if (!msg) 11548 return; 11549 11550 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DEL_STATION); 11551 if (!hdr) { 11552 nlmsg_free(msg); 11553 return; 11554 } 11555 11556 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 11558 goto nla_put_failure; 11559 11560 genlmsg_end(msg, hdr); 11561 11562 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11563 NL80211_MCGRP_MLME, gfp); 11564 return; 11565 11566 nla_put_failure: 11567 genlmsg_cancel(msg, hdr); 11568 nlmsg_free(msg); 11569 } 11570 EXPORT_SYMBOL(cfg80211_del_sta); 11571 11572 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 11573 enum nl80211_connect_failed_reason reason, 11574 gfp_t gfp) 11575 { 11576 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 11577 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11578 struct sk_buff *msg; 11579 void *hdr; 11580 11581 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 11582 if (!msg) 11583 return; 11584 11585 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 11586 if (!hdr) { 11587 nlmsg_free(msg); 11588 return; 11589 } 11590 11591 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11592 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 11593 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 11594 goto nla_put_failure; 11595 11596 genlmsg_end(msg, hdr); 11597 11598 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11599 NL80211_MCGRP_MLME, gfp); 11600 return; 11601 11602 nla_put_failure: 11603 genlmsg_cancel(msg, hdr); 11604 nlmsg_free(msg); 11605 } 11606 EXPORT_SYMBOL(cfg80211_conn_failed); 11607 11608 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 11609 const u8 *addr, gfp_t gfp) 11610 { 11611 struct wireless_dev *wdev = dev->ieee80211_ptr; 11612 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11613 struct sk_buff *msg; 11614 void *hdr; 11615 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 11616 11617 if (!nlportid) 11618 return false; 11619 11620 msg = nlmsg_new(100, gfp); 11621 if (!msg) 11622 return true; 11623 11624 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 11625 if (!hdr) { 11626 nlmsg_free(msg); 11627 return true; 11628 } 11629 11630 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11631 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 11632 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 11633 goto nla_put_failure; 11634 11635 genlmsg_end(msg, hdr); 11636 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11637 return true; 11638 11639 nla_put_failure: 11640 genlmsg_cancel(msg, hdr); 11641 nlmsg_free(msg); 11642 return true; 11643 } 11644 11645 bool cfg80211_rx_spurious_frame(struct net_device *dev, 11646 const u8 *addr, gfp_t gfp) 11647 { 11648 struct wireless_dev *wdev = dev->ieee80211_ptr; 11649 bool ret; 11650 11651 trace_cfg80211_rx_spurious_frame(dev, addr); 11652 11653 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11654 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 11655 trace_cfg80211_return_bool(false); 11656 return false; 11657 } 11658 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 11659 addr, gfp); 11660 trace_cfg80211_return_bool(ret); 11661 return ret; 11662 } 11663 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 11664 11665 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 11666 const u8 *addr, gfp_t gfp) 11667 { 11668 struct wireless_dev *wdev = dev->ieee80211_ptr; 11669 bool ret; 11670 11671 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 11672 11673 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 11674 wdev->iftype != NL80211_IFTYPE_P2P_GO && 11675 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 11676 trace_cfg80211_return_bool(false); 11677 return false; 11678 } 11679 ret = __nl80211_unexpected_frame(dev, 11680 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 11681 addr, gfp); 11682 trace_cfg80211_return_bool(ret); 11683 return ret; 11684 } 11685 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 11686 11687 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 11688 struct wireless_dev *wdev, u32 nlportid, 11689 int freq, int sig_dbm, 11690 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 11691 { 11692 struct net_device *netdev = wdev->netdev; 11693 struct sk_buff *msg; 11694 void *hdr; 11695 11696 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11697 if (!msg) 11698 return -ENOMEM; 11699 11700 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 11701 if (!hdr) { 11702 nlmsg_free(msg); 11703 return -ENOMEM; 11704 } 11705 11706 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11707 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11708 netdev->ifindex)) || 11709 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11710 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 11711 (sig_dbm && 11712 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 11713 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 11714 (flags && 11715 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 11716 goto nla_put_failure; 11717 11718 genlmsg_end(msg, hdr); 11719 11720 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 11721 11722 nla_put_failure: 11723 genlmsg_cancel(msg, hdr); 11724 nlmsg_free(msg); 11725 return -ENOBUFS; 11726 } 11727 11728 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 11729 const u8 *buf, size_t len, bool ack, gfp_t gfp) 11730 { 11731 struct wiphy *wiphy = wdev->wiphy; 11732 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11733 struct net_device *netdev = wdev->netdev; 11734 struct sk_buff *msg; 11735 void *hdr; 11736 11737 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 11738 11739 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11740 if (!msg) 11741 return; 11742 11743 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 11744 if (!hdr) { 11745 nlmsg_free(msg); 11746 return; 11747 } 11748 11749 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11750 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11751 netdev->ifindex)) || 11752 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev)) || 11753 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 11754 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 11755 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 11756 goto nla_put_failure; 11757 11758 genlmsg_end(msg, hdr); 11759 11760 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11761 NL80211_MCGRP_MLME, gfp); 11762 return; 11763 11764 nla_put_failure: 11765 genlmsg_cancel(msg, hdr); 11766 nlmsg_free(msg); 11767 } 11768 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 11769 11770 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 11771 const char *mac, gfp_t gfp) 11772 { 11773 struct wireless_dev *wdev = dev->ieee80211_ptr; 11774 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 11775 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11776 void **cb; 11777 11778 if (!msg) 11779 return NULL; 11780 11781 cb = (void **)msg->cb; 11782 11783 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 11784 if (!cb[0]) { 11785 nlmsg_free(msg); 11786 return NULL; 11787 } 11788 11789 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11790 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 11791 goto nla_put_failure; 11792 11793 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 11794 goto nla_put_failure; 11795 11796 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 11797 if (!cb[1]) 11798 goto nla_put_failure; 11799 11800 cb[2] = rdev; 11801 11802 return msg; 11803 nla_put_failure: 11804 nlmsg_free(msg); 11805 return NULL; 11806 } 11807 11808 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 11809 { 11810 void **cb = (void **)msg->cb; 11811 struct cfg80211_registered_device *rdev = cb[2]; 11812 11813 nla_nest_end(msg, cb[1]); 11814 genlmsg_end(msg, cb[0]); 11815 11816 memset(msg->cb, 0, sizeof(msg->cb)); 11817 11818 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11819 NL80211_MCGRP_MLME, gfp); 11820 } 11821 11822 void cfg80211_cqm_rssi_notify(struct net_device *dev, 11823 enum nl80211_cqm_rssi_threshold_event rssi_event, 11824 gfp_t gfp) 11825 { 11826 struct sk_buff *msg; 11827 11828 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 11829 11830 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 11831 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 11832 return; 11833 11834 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 11835 if (!msg) 11836 return; 11837 11838 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 11839 rssi_event)) 11840 goto nla_put_failure; 11841 11842 cfg80211_send_cqm(msg, gfp); 11843 11844 return; 11845 11846 nla_put_failure: 11847 nlmsg_free(msg); 11848 } 11849 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 11850 11851 void cfg80211_cqm_txe_notify(struct net_device *dev, 11852 const u8 *peer, u32 num_packets, 11853 u32 rate, u32 intvl, gfp_t gfp) 11854 { 11855 struct sk_buff *msg; 11856 11857 msg = cfg80211_prepare_cqm(dev, peer, gfp); 11858 if (!msg) 11859 return; 11860 11861 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 11862 goto nla_put_failure; 11863 11864 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 11865 goto nla_put_failure; 11866 11867 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 11868 goto nla_put_failure; 11869 11870 cfg80211_send_cqm(msg, gfp); 11871 return; 11872 11873 nla_put_failure: 11874 nlmsg_free(msg); 11875 } 11876 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 11877 11878 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 11879 const u8 *peer, u32 num_packets, gfp_t gfp) 11880 { 11881 struct sk_buff *msg; 11882 11883 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 11884 11885 msg = cfg80211_prepare_cqm(dev, peer, gfp); 11886 if (!msg) 11887 return; 11888 11889 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 11890 goto nla_put_failure; 11891 11892 cfg80211_send_cqm(msg, gfp); 11893 return; 11894 11895 nla_put_failure: 11896 nlmsg_free(msg); 11897 } 11898 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 11899 11900 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 11901 { 11902 struct sk_buff *msg; 11903 11904 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 11905 if (!msg) 11906 return; 11907 11908 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 11909 goto nla_put_failure; 11910 11911 cfg80211_send_cqm(msg, gfp); 11912 return; 11913 11914 nla_put_failure: 11915 nlmsg_free(msg); 11916 } 11917 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 11918 11919 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 11920 struct net_device *netdev, const u8 *bssid, 11921 const u8 *replay_ctr, gfp_t gfp) 11922 { 11923 struct sk_buff *msg; 11924 struct nlattr *rekey_attr; 11925 void *hdr; 11926 11927 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11928 if (!msg) 11929 return; 11930 11931 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 11932 if (!hdr) { 11933 nlmsg_free(msg); 11934 return; 11935 } 11936 11937 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11938 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 11939 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 11940 goto nla_put_failure; 11941 11942 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 11943 if (!rekey_attr) 11944 goto nla_put_failure; 11945 11946 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 11947 NL80211_REPLAY_CTR_LEN, replay_ctr)) 11948 goto nla_put_failure; 11949 11950 nla_nest_end(msg, rekey_attr); 11951 11952 genlmsg_end(msg, hdr); 11953 11954 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11955 NL80211_MCGRP_MLME, gfp); 11956 return; 11957 11958 nla_put_failure: 11959 genlmsg_cancel(msg, hdr); 11960 nlmsg_free(msg); 11961 } 11962 11963 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 11964 const u8 *replay_ctr, gfp_t gfp) 11965 { 11966 struct wireless_dev *wdev = dev->ieee80211_ptr; 11967 struct wiphy *wiphy = wdev->wiphy; 11968 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 11969 11970 trace_cfg80211_gtk_rekey_notify(dev, bssid); 11971 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 11972 } 11973 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 11974 11975 static void 11976 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 11977 struct net_device *netdev, int index, 11978 const u8 *bssid, bool preauth, gfp_t gfp) 11979 { 11980 struct sk_buff *msg; 11981 struct nlattr *attr; 11982 void *hdr; 11983 11984 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 11985 if (!msg) 11986 return; 11987 11988 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 11989 if (!hdr) { 11990 nlmsg_free(msg); 11991 return; 11992 } 11993 11994 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11995 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11996 goto nla_put_failure; 11997 11998 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 11999 if (!attr) 12000 goto nla_put_failure; 12001 12002 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 12003 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 12004 (preauth && 12005 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 12006 goto nla_put_failure; 12007 12008 nla_nest_end(msg, attr); 12009 12010 genlmsg_end(msg, hdr); 12011 12012 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12013 NL80211_MCGRP_MLME, gfp); 12014 return; 12015 12016 nla_put_failure: 12017 genlmsg_cancel(msg, hdr); 12018 nlmsg_free(msg); 12019 } 12020 12021 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 12022 const u8 *bssid, bool preauth, gfp_t gfp) 12023 { 12024 struct wireless_dev *wdev = dev->ieee80211_ptr; 12025 struct wiphy *wiphy = wdev->wiphy; 12026 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12027 12028 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 12029 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 12030 } 12031 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 12032 12033 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 12034 struct net_device *netdev, 12035 struct cfg80211_chan_def *chandef, 12036 gfp_t gfp, 12037 enum nl80211_commands notif, 12038 u8 count) 12039 { 12040 struct sk_buff *msg; 12041 void *hdr; 12042 12043 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12044 if (!msg) 12045 return; 12046 12047 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 12048 if (!hdr) { 12049 nlmsg_free(msg); 12050 return; 12051 } 12052 12053 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 12054 goto nla_put_failure; 12055 12056 if (nl80211_send_chandef(msg, chandef)) 12057 goto nla_put_failure; 12058 12059 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 12060 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 12061 goto nla_put_failure; 12062 12063 genlmsg_end(msg, hdr); 12064 12065 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12066 NL80211_MCGRP_MLME, gfp); 12067 return; 12068 12069 nla_put_failure: 12070 genlmsg_cancel(msg, hdr); 12071 nlmsg_free(msg); 12072 } 12073 12074 void cfg80211_ch_switch_notify(struct net_device *dev, 12075 struct cfg80211_chan_def *chandef) 12076 { 12077 struct wireless_dev *wdev = dev->ieee80211_ptr; 12078 struct wiphy *wiphy = wdev->wiphy; 12079 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12080 12081 ASSERT_WDEV_LOCK(wdev); 12082 12083 trace_cfg80211_ch_switch_notify(dev, chandef); 12084 12085 wdev->chandef = *chandef; 12086 wdev->preset_chandef = *chandef; 12087 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12088 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 12089 } 12090 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 12091 12092 void cfg80211_ch_switch_started_notify(struct net_device *dev, 12093 struct cfg80211_chan_def *chandef, 12094 u8 count) 12095 { 12096 struct wireless_dev *wdev = dev->ieee80211_ptr; 12097 struct wiphy *wiphy = wdev->wiphy; 12098 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12099 12100 trace_cfg80211_ch_switch_started_notify(dev, chandef); 12101 12102 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 12103 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 12104 } 12105 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 12106 12107 void 12108 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 12109 const struct cfg80211_chan_def *chandef, 12110 enum nl80211_radar_event event, 12111 struct net_device *netdev, gfp_t gfp) 12112 { 12113 struct sk_buff *msg; 12114 void *hdr; 12115 12116 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12117 if (!msg) 12118 return; 12119 12120 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 12121 if (!hdr) { 12122 nlmsg_free(msg); 12123 return; 12124 } 12125 12126 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 12127 goto nla_put_failure; 12128 12129 /* NOP and radar events don't need a netdev parameter */ 12130 if (netdev) { 12131 struct wireless_dev *wdev = netdev->ieee80211_ptr; 12132 12133 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12134 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12135 goto nla_put_failure; 12136 } 12137 12138 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 12139 goto nla_put_failure; 12140 12141 if (nl80211_send_chandef(msg, chandef)) 12142 goto nla_put_failure; 12143 12144 genlmsg_end(msg, hdr); 12145 12146 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12147 NL80211_MCGRP_MLME, gfp); 12148 return; 12149 12150 nla_put_failure: 12151 genlmsg_cancel(msg, hdr); 12152 nlmsg_free(msg); 12153 } 12154 12155 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 12156 u64 cookie, bool acked, gfp_t gfp) 12157 { 12158 struct wireless_dev *wdev = dev->ieee80211_ptr; 12159 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12160 struct sk_buff *msg; 12161 void *hdr; 12162 12163 trace_cfg80211_probe_status(dev, addr, cookie, acked); 12164 12165 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12166 12167 if (!msg) 12168 return; 12169 12170 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 12171 if (!hdr) { 12172 nlmsg_free(msg); 12173 return; 12174 } 12175 12176 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12177 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12178 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12179 nla_put_u64(msg, NL80211_ATTR_COOKIE, cookie) || 12180 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 12181 goto nla_put_failure; 12182 12183 genlmsg_end(msg, hdr); 12184 12185 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12186 NL80211_MCGRP_MLME, gfp); 12187 return; 12188 12189 nla_put_failure: 12190 genlmsg_cancel(msg, hdr); 12191 nlmsg_free(msg); 12192 } 12193 EXPORT_SYMBOL(cfg80211_probe_status); 12194 12195 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 12196 const u8 *frame, size_t len, 12197 int freq, int sig_dbm) 12198 { 12199 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12200 struct sk_buff *msg; 12201 void *hdr; 12202 struct cfg80211_beacon_registration *reg; 12203 12204 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 12205 12206 spin_lock_bh(&rdev->beacon_registrations_lock); 12207 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 12208 msg = nlmsg_new(len + 100, GFP_ATOMIC); 12209 if (!msg) { 12210 spin_unlock_bh(&rdev->beacon_registrations_lock); 12211 return; 12212 } 12213 12214 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12215 if (!hdr) 12216 goto nla_put_failure; 12217 12218 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12219 (freq && 12220 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 12221 (sig_dbm && 12222 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12223 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 12224 goto nla_put_failure; 12225 12226 genlmsg_end(msg, hdr); 12227 12228 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 12229 } 12230 spin_unlock_bh(&rdev->beacon_registrations_lock); 12231 return; 12232 12233 nla_put_failure: 12234 spin_unlock_bh(&rdev->beacon_registrations_lock); 12235 if (hdr) 12236 genlmsg_cancel(msg, hdr); 12237 nlmsg_free(msg); 12238 } 12239 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 12240 12241 #ifdef CONFIG_PM 12242 static int cfg80211_net_detect_results(struct sk_buff *msg, 12243 struct cfg80211_wowlan_wakeup *wakeup) 12244 { 12245 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 12246 struct nlattr *nl_results, *nl_match, *nl_freqs; 12247 int i, j; 12248 12249 nl_results = nla_nest_start( 12250 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 12251 if (!nl_results) 12252 return -EMSGSIZE; 12253 12254 for (i = 0; i < nd->n_matches; i++) { 12255 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 12256 12257 nl_match = nla_nest_start(msg, i); 12258 if (!nl_match) 12259 break; 12260 12261 /* The SSID attribute is optional in nl80211, but for 12262 * simplicity reasons it's always present in the 12263 * cfg80211 structure. If a driver can't pass the 12264 * SSID, that needs to be changed. A zero length SSID 12265 * is still a valid SSID (wildcard), so it cannot be 12266 * used for this purpose. 12267 */ 12268 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 12269 match->ssid.ssid)) { 12270 nla_nest_cancel(msg, nl_match); 12271 goto out; 12272 } 12273 12274 if (match->n_channels) { 12275 nl_freqs = nla_nest_start( 12276 msg, NL80211_ATTR_SCAN_FREQUENCIES); 12277 if (!nl_freqs) { 12278 nla_nest_cancel(msg, nl_match); 12279 goto out; 12280 } 12281 12282 for (j = 0; j < match->n_channels; j++) { 12283 if (nla_put_u32(msg, 12284 NL80211_ATTR_WIPHY_FREQ, 12285 match->channels[j])) { 12286 nla_nest_cancel(msg, nl_freqs); 12287 nla_nest_cancel(msg, nl_match); 12288 goto out; 12289 } 12290 } 12291 12292 nla_nest_end(msg, nl_freqs); 12293 } 12294 12295 nla_nest_end(msg, nl_match); 12296 } 12297 12298 out: 12299 nla_nest_end(msg, nl_results); 12300 return 0; 12301 } 12302 12303 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 12304 struct cfg80211_wowlan_wakeup *wakeup, 12305 gfp_t gfp) 12306 { 12307 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12308 struct sk_buff *msg; 12309 void *hdr; 12310 int size = 200; 12311 12312 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 12313 12314 if (wakeup) 12315 size += wakeup->packet_present_len; 12316 12317 msg = nlmsg_new(size, gfp); 12318 if (!msg) 12319 return; 12320 12321 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 12322 if (!hdr) 12323 goto free_msg; 12324 12325 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12326 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12327 goto free_msg; 12328 12329 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12330 wdev->netdev->ifindex)) 12331 goto free_msg; 12332 12333 if (wakeup) { 12334 struct nlattr *reasons; 12335 12336 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 12337 if (!reasons) 12338 goto free_msg; 12339 12340 if (wakeup->disconnect && 12341 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 12342 goto free_msg; 12343 if (wakeup->magic_pkt && 12344 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 12345 goto free_msg; 12346 if (wakeup->gtk_rekey_failure && 12347 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 12348 goto free_msg; 12349 if (wakeup->eap_identity_req && 12350 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 12351 goto free_msg; 12352 if (wakeup->four_way_handshake && 12353 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 12354 goto free_msg; 12355 if (wakeup->rfkill_release && 12356 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 12357 goto free_msg; 12358 12359 if (wakeup->pattern_idx >= 0 && 12360 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 12361 wakeup->pattern_idx)) 12362 goto free_msg; 12363 12364 if (wakeup->tcp_match && 12365 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 12366 goto free_msg; 12367 12368 if (wakeup->tcp_connlost && 12369 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 12370 goto free_msg; 12371 12372 if (wakeup->tcp_nomoretokens && 12373 nla_put_flag(msg, 12374 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 12375 goto free_msg; 12376 12377 if (wakeup->packet) { 12378 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 12379 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 12380 12381 if (!wakeup->packet_80211) { 12382 pkt_attr = 12383 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 12384 len_attr = 12385 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 12386 } 12387 12388 if (wakeup->packet_len && 12389 nla_put_u32(msg, len_attr, wakeup->packet_len)) 12390 goto free_msg; 12391 12392 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 12393 wakeup->packet)) 12394 goto free_msg; 12395 } 12396 12397 if (wakeup->net_detect && 12398 cfg80211_net_detect_results(msg, wakeup)) 12399 goto free_msg; 12400 12401 nla_nest_end(msg, reasons); 12402 } 12403 12404 genlmsg_end(msg, hdr); 12405 12406 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12407 NL80211_MCGRP_MLME, gfp); 12408 return; 12409 12410 free_msg: 12411 nlmsg_free(msg); 12412 } 12413 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 12414 #endif 12415 12416 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 12417 enum nl80211_tdls_operation oper, 12418 u16 reason_code, gfp_t gfp) 12419 { 12420 struct wireless_dev *wdev = dev->ieee80211_ptr; 12421 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12422 struct sk_buff *msg; 12423 void *hdr; 12424 12425 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 12426 reason_code); 12427 12428 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12429 if (!msg) 12430 return; 12431 12432 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 12433 if (!hdr) { 12434 nlmsg_free(msg); 12435 return; 12436 } 12437 12438 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12439 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12440 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 12441 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 12442 (reason_code > 0 && 12443 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 12444 goto nla_put_failure; 12445 12446 genlmsg_end(msg, hdr); 12447 12448 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12449 NL80211_MCGRP_MLME, gfp); 12450 return; 12451 12452 nla_put_failure: 12453 genlmsg_cancel(msg, hdr); 12454 nlmsg_free(msg); 12455 } 12456 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 12457 12458 static int nl80211_netlink_notify(struct notifier_block * nb, 12459 unsigned long state, 12460 void *_notify) 12461 { 12462 struct netlink_notify *notify = _notify; 12463 struct cfg80211_registered_device *rdev; 12464 struct wireless_dev *wdev; 12465 struct cfg80211_beacon_registration *reg, *tmp; 12466 12467 if (state != NETLINK_URELEASE) 12468 return NOTIFY_DONE; 12469 12470 rcu_read_lock(); 12471 12472 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 12473 bool schedule_destroy_work = false; 12474 12475 list_for_each_entry_rcu(wdev, &rdev->wdev_list, list) { 12476 cfg80211_mlme_unregister_socket(wdev, notify->portid); 12477 12478 if (wdev->owner_nlportid == notify->portid) 12479 schedule_destroy_work = true; 12480 } 12481 12482 spin_lock_bh(&rdev->beacon_registrations_lock); 12483 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 12484 list) { 12485 if (reg->nlportid == notify->portid) { 12486 list_del(®->list); 12487 kfree(reg); 12488 break; 12489 } 12490 } 12491 spin_unlock_bh(&rdev->beacon_registrations_lock); 12492 12493 if (schedule_destroy_work) { 12494 struct cfg80211_iface_destroy *destroy; 12495 12496 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 12497 if (destroy) { 12498 destroy->nlportid = notify->portid; 12499 spin_lock(&rdev->destroy_list_lock); 12500 list_add(&destroy->list, &rdev->destroy_list); 12501 spin_unlock(&rdev->destroy_list_lock); 12502 schedule_work(&rdev->destroy_work); 12503 } 12504 } 12505 } 12506 12507 rcu_read_unlock(); 12508 12509 return NOTIFY_OK; 12510 } 12511 12512 static struct notifier_block nl80211_netlink_notifier = { 12513 .notifier_call = nl80211_netlink_notify, 12514 }; 12515 12516 void cfg80211_ft_event(struct net_device *netdev, 12517 struct cfg80211_ft_event_params *ft_event) 12518 { 12519 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 12520 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12521 struct sk_buff *msg; 12522 void *hdr; 12523 12524 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 12525 12526 if (!ft_event->target_ap) 12527 return; 12528 12529 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12530 if (!msg) 12531 return; 12532 12533 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 12534 if (!hdr) 12535 goto out; 12536 12537 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12538 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12539 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 12540 goto out; 12541 12542 if (ft_event->ies && 12543 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 12544 goto out; 12545 if (ft_event->ric_ies && 12546 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 12547 ft_event->ric_ies)) 12548 goto out; 12549 12550 genlmsg_end(msg, hdr); 12551 12552 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12553 NL80211_MCGRP_MLME, GFP_KERNEL); 12554 return; 12555 out: 12556 nlmsg_free(msg); 12557 } 12558 EXPORT_SYMBOL(cfg80211_ft_event); 12559 12560 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 12561 { 12562 struct cfg80211_registered_device *rdev; 12563 struct sk_buff *msg; 12564 void *hdr; 12565 u32 nlportid; 12566 12567 rdev = wiphy_to_rdev(wdev->wiphy); 12568 if (!rdev->crit_proto_nlportid) 12569 return; 12570 12571 nlportid = rdev->crit_proto_nlportid; 12572 rdev->crit_proto_nlportid = 0; 12573 12574 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12575 if (!msg) 12576 return; 12577 12578 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 12579 if (!hdr) 12580 goto nla_put_failure; 12581 12582 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12583 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12584 goto nla_put_failure; 12585 12586 genlmsg_end(msg, hdr); 12587 12588 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12589 return; 12590 12591 nla_put_failure: 12592 if (hdr) 12593 genlmsg_cancel(msg, hdr); 12594 nlmsg_free(msg); 12595 12596 } 12597 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 12598 12599 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 12600 { 12601 struct wiphy *wiphy = wdev->wiphy; 12602 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12603 struct sk_buff *msg; 12604 void *hdr; 12605 12606 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12607 if (!msg) 12608 return; 12609 12610 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 12611 if (!hdr) 12612 goto out; 12613 12614 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12615 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 12616 nla_put_u64(msg, NL80211_ATTR_WDEV, wdev_id(wdev))) 12617 goto out; 12618 12619 genlmsg_end(msg, hdr); 12620 12621 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 12622 NL80211_MCGRP_MLME, GFP_KERNEL); 12623 return; 12624 out: 12625 nlmsg_free(msg); 12626 } 12627 12628 /* initialisation/exit functions */ 12629 12630 int nl80211_init(void) 12631 { 12632 int err; 12633 12634 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 12635 nl80211_mcgrps); 12636 if (err) 12637 return err; 12638 12639 err = netlink_register_notifier(&nl80211_netlink_notifier); 12640 if (err) 12641 goto err_out; 12642 12643 return 0; 12644 err_out: 12645 genl_unregister_family(&nl80211_fam); 12646 return err; 12647 } 12648 12649 void nl80211_exit(void) 12650 { 12651 netlink_unregister_notifier(&nl80211_netlink_notifier); 12652 genl_unregister_family(&nl80211_fam); 12653 } 12654