1 /* 2 * This is the new netlink-based wireless configuration interface. 3 * 4 * Copyright 2006-2010 Johannes Berg <johannes@sipsolutions.net> 5 * Copyright 2013-2014 Intel Mobile Communications GmbH 6 * Copyright 2015-2016 Intel Deutschland GmbH 7 */ 8 9 #include <linux/if.h> 10 #include <linux/module.h> 11 #include <linux/err.h> 12 #include <linux/slab.h> 13 #include <linux/list.h> 14 #include <linux/if_ether.h> 15 #include <linux/ieee80211.h> 16 #include <linux/nl80211.h> 17 #include <linux/rtnetlink.h> 18 #include <linux/netlink.h> 19 #include <linux/etherdevice.h> 20 #include <net/net_namespace.h> 21 #include <net/genetlink.h> 22 #include <net/cfg80211.h> 23 #include <net/sock.h> 24 #include <net/inet_connection_sock.h> 25 #include "core.h" 26 #include "nl80211.h" 27 #include "reg.h" 28 #include "rdev-ops.h" 29 30 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 31 struct genl_info *info, 32 struct cfg80211_crypto_settings *settings, 33 int cipher_limit); 34 35 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 36 struct genl_info *info); 37 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 38 struct genl_info *info); 39 40 /* the netlink family */ 41 static struct genl_family nl80211_fam = { 42 .id = GENL_ID_GENERATE, /* don't bother with a hardcoded ID */ 43 .name = NL80211_GENL_NAME, /* have users key off the name instead */ 44 .hdrsize = 0, /* no private header */ 45 .version = 1, /* no particular meaning now */ 46 .maxattr = NL80211_ATTR_MAX, 47 .netnsok = true, 48 .pre_doit = nl80211_pre_doit, 49 .post_doit = nl80211_post_doit, 50 }; 51 52 /* multicast groups */ 53 enum nl80211_multicast_groups { 54 NL80211_MCGRP_CONFIG, 55 NL80211_MCGRP_SCAN, 56 NL80211_MCGRP_REGULATORY, 57 NL80211_MCGRP_MLME, 58 NL80211_MCGRP_VENDOR, 59 NL80211_MCGRP_TESTMODE /* keep last - ifdef! */ 60 }; 61 62 static const struct genl_multicast_group nl80211_mcgrps[] = { 63 [NL80211_MCGRP_CONFIG] = { .name = NL80211_MULTICAST_GROUP_CONFIG }, 64 [NL80211_MCGRP_SCAN] = { .name = NL80211_MULTICAST_GROUP_SCAN }, 65 [NL80211_MCGRP_REGULATORY] = { .name = NL80211_MULTICAST_GROUP_REG }, 66 [NL80211_MCGRP_MLME] = { .name = NL80211_MULTICAST_GROUP_MLME }, 67 [NL80211_MCGRP_VENDOR] = { .name = NL80211_MULTICAST_GROUP_VENDOR }, 68 #ifdef CONFIG_NL80211_TESTMODE 69 [NL80211_MCGRP_TESTMODE] = { .name = NL80211_MULTICAST_GROUP_TESTMODE } 70 #endif 71 }; 72 73 /* returns ERR_PTR values */ 74 static struct wireless_dev * 75 __cfg80211_wdev_from_attrs(struct net *netns, struct nlattr **attrs) 76 { 77 struct cfg80211_registered_device *rdev; 78 struct wireless_dev *result = NULL; 79 bool have_ifidx = attrs[NL80211_ATTR_IFINDEX]; 80 bool have_wdev_id = attrs[NL80211_ATTR_WDEV]; 81 u64 wdev_id; 82 int wiphy_idx = -1; 83 int ifidx = -1; 84 85 ASSERT_RTNL(); 86 87 if (!have_ifidx && !have_wdev_id) 88 return ERR_PTR(-EINVAL); 89 90 if (have_ifidx) 91 ifidx = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 92 if (have_wdev_id) { 93 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 94 wiphy_idx = wdev_id >> 32; 95 } 96 97 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 98 struct wireless_dev *wdev; 99 100 if (wiphy_net(&rdev->wiphy) != netns) 101 continue; 102 103 if (have_wdev_id && rdev->wiphy_idx != wiphy_idx) 104 continue; 105 106 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 107 if (have_ifidx && wdev->netdev && 108 wdev->netdev->ifindex == ifidx) { 109 result = wdev; 110 break; 111 } 112 if (have_wdev_id && wdev->identifier == (u32)wdev_id) { 113 result = wdev; 114 break; 115 } 116 } 117 118 if (result) 119 break; 120 } 121 122 if (result) 123 return result; 124 return ERR_PTR(-ENODEV); 125 } 126 127 static struct cfg80211_registered_device * 128 __cfg80211_rdev_from_attrs(struct net *netns, struct nlattr **attrs) 129 { 130 struct cfg80211_registered_device *rdev = NULL, *tmp; 131 struct net_device *netdev; 132 133 ASSERT_RTNL(); 134 135 if (!attrs[NL80211_ATTR_WIPHY] && 136 !attrs[NL80211_ATTR_IFINDEX] && 137 !attrs[NL80211_ATTR_WDEV]) 138 return ERR_PTR(-EINVAL); 139 140 if (attrs[NL80211_ATTR_WIPHY]) 141 rdev = cfg80211_rdev_by_wiphy_idx( 142 nla_get_u32(attrs[NL80211_ATTR_WIPHY])); 143 144 if (attrs[NL80211_ATTR_WDEV]) { 145 u64 wdev_id = nla_get_u64(attrs[NL80211_ATTR_WDEV]); 146 struct wireless_dev *wdev; 147 bool found = false; 148 149 tmp = cfg80211_rdev_by_wiphy_idx(wdev_id >> 32); 150 if (tmp) { 151 /* make sure wdev exists */ 152 list_for_each_entry(wdev, &tmp->wiphy.wdev_list, list) { 153 if (wdev->identifier != (u32)wdev_id) 154 continue; 155 found = true; 156 break; 157 } 158 159 if (!found) 160 tmp = NULL; 161 162 if (rdev && tmp != rdev) 163 return ERR_PTR(-EINVAL); 164 rdev = tmp; 165 } 166 } 167 168 if (attrs[NL80211_ATTR_IFINDEX]) { 169 int ifindex = nla_get_u32(attrs[NL80211_ATTR_IFINDEX]); 170 171 netdev = __dev_get_by_index(netns, ifindex); 172 if (netdev) { 173 if (netdev->ieee80211_ptr) 174 tmp = wiphy_to_rdev( 175 netdev->ieee80211_ptr->wiphy); 176 else 177 tmp = NULL; 178 179 /* not wireless device -- return error */ 180 if (!tmp) 181 return ERR_PTR(-EINVAL); 182 183 /* mismatch -- return error */ 184 if (rdev && tmp != rdev) 185 return ERR_PTR(-EINVAL); 186 187 rdev = tmp; 188 } 189 } 190 191 if (!rdev) 192 return ERR_PTR(-ENODEV); 193 194 if (netns != wiphy_net(&rdev->wiphy)) 195 return ERR_PTR(-ENODEV); 196 197 return rdev; 198 } 199 200 /* 201 * This function returns a pointer to the driver 202 * that the genl_info item that is passed refers to. 203 * 204 * The result of this can be a PTR_ERR and hence must 205 * be checked with IS_ERR() for errors. 206 */ 207 static struct cfg80211_registered_device * 208 cfg80211_get_dev_from_info(struct net *netns, struct genl_info *info) 209 { 210 return __cfg80211_rdev_from_attrs(netns, info->attrs); 211 } 212 213 /* policy for the attributes */ 214 static const struct nla_policy nl80211_policy[NUM_NL80211_ATTR] = { 215 [NL80211_ATTR_WIPHY] = { .type = NLA_U32 }, 216 [NL80211_ATTR_WIPHY_NAME] = { .type = NLA_NUL_STRING, 217 .len = 20-1 }, 218 [NL80211_ATTR_WIPHY_TXQ_PARAMS] = { .type = NLA_NESTED }, 219 220 [NL80211_ATTR_WIPHY_FREQ] = { .type = NLA_U32 }, 221 [NL80211_ATTR_WIPHY_CHANNEL_TYPE] = { .type = NLA_U32 }, 222 [NL80211_ATTR_CHANNEL_WIDTH] = { .type = NLA_U32 }, 223 [NL80211_ATTR_CENTER_FREQ1] = { .type = NLA_U32 }, 224 [NL80211_ATTR_CENTER_FREQ2] = { .type = NLA_U32 }, 225 226 [NL80211_ATTR_WIPHY_RETRY_SHORT] = { .type = NLA_U8 }, 227 [NL80211_ATTR_WIPHY_RETRY_LONG] = { .type = NLA_U8 }, 228 [NL80211_ATTR_WIPHY_FRAG_THRESHOLD] = { .type = NLA_U32 }, 229 [NL80211_ATTR_WIPHY_RTS_THRESHOLD] = { .type = NLA_U32 }, 230 [NL80211_ATTR_WIPHY_COVERAGE_CLASS] = { .type = NLA_U8 }, 231 [NL80211_ATTR_WIPHY_DYN_ACK] = { .type = NLA_FLAG }, 232 233 [NL80211_ATTR_IFTYPE] = { .type = NLA_U32 }, 234 [NL80211_ATTR_IFINDEX] = { .type = NLA_U32 }, 235 [NL80211_ATTR_IFNAME] = { .type = NLA_NUL_STRING, .len = IFNAMSIZ-1 }, 236 237 [NL80211_ATTR_MAC] = { .len = ETH_ALEN }, 238 [NL80211_ATTR_PREV_BSSID] = { .len = ETH_ALEN }, 239 240 [NL80211_ATTR_KEY] = { .type = NLA_NESTED, }, 241 [NL80211_ATTR_KEY_DATA] = { .type = NLA_BINARY, 242 .len = WLAN_MAX_KEY_LEN }, 243 [NL80211_ATTR_KEY_IDX] = { .type = NLA_U8 }, 244 [NL80211_ATTR_KEY_CIPHER] = { .type = NLA_U32 }, 245 [NL80211_ATTR_KEY_DEFAULT] = { .type = NLA_FLAG }, 246 [NL80211_ATTR_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 247 [NL80211_ATTR_KEY_TYPE] = { .type = NLA_U32 }, 248 249 [NL80211_ATTR_BEACON_INTERVAL] = { .type = NLA_U32 }, 250 [NL80211_ATTR_DTIM_PERIOD] = { .type = NLA_U32 }, 251 [NL80211_ATTR_BEACON_HEAD] = { .type = NLA_BINARY, 252 .len = IEEE80211_MAX_DATA_LEN }, 253 [NL80211_ATTR_BEACON_TAIL] = { .type = NLA_BINARY, 254 .len = IEEE80211_MAX_DATA_LEN }, 255 [NL80211_ATTR_STA_AID] = { .type = NLA_U16 }, 256 [NL80211_ATTR_STA_FLAGS] = { .type = NLA_NESTED }, 257 [NL80211_ATTR_STA_LISTEN_INTERVAL] = { .type = NLA_U16 }, 258 [NL80211_ATTR_STA_SUPPORTED_RATES] = { .type = NLA_BINARY, 259 .len = NL80211_MAX_SUPP_RATES }, 260 [NL80211_ATTR_STA_PLINK_ACTION] = { .type = NLA_U8 }, 261 [NL80211_ATTR_STA_VLAN] = { .type = NLA_U32 }, 262 [NL80211_ATTR_MNTR_FLAGS] = { /* NLA_NESTED can't be empty */ }, 263 [NL80211_ATTR_MESH_ID] = { .type = NLA_BINARY, 264 .len = IEEE80211_MAX_MESH_ID_LEN }, 265 [NL80211_ATTR_MPATH_NEXT_HOP] = { .type = NLA_U32 }, 266 267 [NL80211_ATTR_REG_ALPHA2] = { .type = NLA_STRING, .len = 2 }, 268 [NL80211_ATTR_REG_RULES] = { .type = NLA_NESTED }, 269 270 [NL80211_ATTR_BSS_CTS_PROT] = { .type = NLA_U8 }, 271 [NL80211_ATTR_BSS_SHORT_PREAMBLE] = { .type = NLA_U8 }, 272 [NL80211_ATTR_BSS_SHORT_SLOT_TIME] = { .type = NLA_U8 }, 273 [NL80211_ATTR_BSS_BASIC_RATES] = { .type = NLA_BINARY, 274 .len = NL80211_MAX_SUPP_RATES }, 275 [NL80211_ATTR_BSS_HT_OPMODE] = { .type = NLA_U16 }, 276 277 [NL80211_ATTR_MESH_CONFIG] = { .type = NLA_NESTED }, 278 [NL80211_ATTR_SUPPORT_MESH_AUTH] = { .type = NLA_FLAG }, 279 280 [NL80211_ATTR_HT_CAPABILITY] = { .len = NL80211_HT_CAPABILITY_LEN }, 281 282 [NL80211_ATTR_MGMT_SUBTYPE] = { .type = NLA_U8 }, 283 [NL80211_ATTR_IE] = { .type = NLA_BINARY, 284 .len = IEEE80211_MAX_DATA_LEN }, 285 [NL80211_ATTR_SCAN_FREQUENCIES] = { .type = NLA_NESTED }, 286 [NL80211_ATTR_SCAN_SSIDS] = { .type = NLA_NESTED }, 287 288 [NL80211_ATTR_SSID] = { .type = NLA_BINARY, 289 .len = IEEE80211_MAX_SSID_LEN }, 290 [NL80211_ATTR_AUTH_TYPE] = { .type = NLA_U32 }, 291 [NL80211_ATTR_REASON_CODE] = { .type = NLA_U16 }, 292 [NL80211_ATTR_FREQ_FIXED] = { .type = NLA_FLAG }, 293 [NL80211_ATTR_TIMED_OUT] = { .type = NLA_FLAG }, 294 [NL80211_ATTR_USE_MFP] = { .type = NLA_U32 }, 295 [NL80211_ATTR_STA_FLAGS2] = { 296 .len = sizeof(struct nl80211_sta_flag_update), 297 }, 298 [NL80211_ATTR_CONTROL_PORT] = { .type = NLA_FLAG }, 299 [NL80211_ATTR_CONTROL_PORT_ETHERTYPE] = { .type = NLA_U16 }, 300 [NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT] = { .type = NLA_FLAG }, 301 [NL80211_ATTR_PRIVACY] = { .type = NLA_FLAG }, 302 [NL80211_ATTR_CIPHER_SUITE_GROUP] = { .type = NLA_U32 }, 303 [NL80211_ATTR_WPA_VERSIONS] = { .type = NLA_U32 }, 304 [NL80211_ATTR_PID] = { .type = NLA_U32 }, 305 [NL80211_ATTR_4ADDR] = { .type = NLA_U8 }, 306 [NL80211_ATTR_PMKID] = { .type = NLA_BINARY, 307 .len = WLAN_PMKID_LEN }, 308 [NL80211_ATTR_DURATION] = { .type = NLA_U32 }, 309 [NL80211_ATTR_COOKIE] = { .type = NLA_U64 }, 310 [NL80211_ATTR_TX_RATES] = { .type = NLA_NESTED }, 311 [NL80211_ATTR_FRAME] = { .type = NLA_BINARY, 312 .len = IEEE80211_MAX_DATA_LEN }, 313 [NL80211_ATTR_FRAME_MATCH] = { .type = NLA_BINARY, }, 314 [NL80211_ATTR_PS_STATE] = { .type = NLA_U32 }, 315 [NL80211_ATTR_CQM] = { .type = NLA_NESTED, }, 316 [NL80211_ATTR_LOCAL_STATE_CHANGE] = { .type = NLA_FLAG }, 317 [NL80211_ATTR_AP_ISOLATE] = { .type = NLA_U8 }, 318 [NL80211_ATTR_WIPHY_TX_POWER_SETTING] = { .type = NLA_U32 }, 319 [NL80211_ATTR_WIPHY_TX_POWER_LEVEL] = { .type = NLA_U32 }, 320 [NL80211_ATTR_FRAME_TYPE] = { .type = NLA_U16 }, 321 [NL80211_ATTR_WIPHY_ANTENNA_TX] = { .type = NLA_U32 }, 322 [NL80211_ATTR_WIPHY_ANTENNA_RX] = { .type = NLA_U32 }, 323 [NL80211_ATTR_MCAST_RATE] = { .type = NLA_U32 }, 324 [NL80211_ATTR_OFFCHANNEL_TX_OK] = { .type = NLA_FLAG }, 325 [NL80211_ATTR_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 326 [NL80211_ATTR_WOWLAN_TRIGGERS] = { .type = NLA_NESTED }, 327 [NL80211_ATTR_STA_PLINK_STATE] = { .type = NLA_U8 }, 328 [NL80211_ATTR_SCHED_SCAN_INTERVAL] = { .type = NLA_U32 }, 329 [NL80211_ATTR_REKEY_DATA] = { .type = NLA_NESTED }, 330 [NL80211_ATTR_SCAN_SUPP_RATES] = { .type = NLA_NESTED }, 331 [NL80211_ATTR_HIDDEN_SSID] = { .type = NLA_U32 }, 332 [NL80211_ATTR_IE_PROBE_RESP] = { .type = NLA_BINARY, 333 .len = IEEE80211_MAX_DATA_LEN }, 334 [NL80211_ATTR_IE_ASSOC_RESP] = { .type = NLA_BINARY, 335 .len = IEEE80211_MAX_DATA_LEN }, 336 [NL80211_ATTR_ROAM_SUPPORT] = { .type = NLA_FLAG }, 337 [NL80211_ATTR_SCHED_SCAN_MATCH] = { .type = NLA_NESTED }, 338 [NL80211_ATTR_TX_NO_CCK_RATE] = { .type = NLA_FLAG }, 339 [NL80211_ATTR_TDLS_ACTION] = { .type = NLA_U8 }, 340 [NL80211_ATTR_TDLS_DIALOG_TOKEN] = { .type = NLA_U8 }, 341 [NL80211_ATTR_TDLS_OPERATION] = { .type = NLA_U8 }, 342 [NL80211_ATTR_TDLS_SUPPORT] = { .type = NLA_FLAG }, 343 [NL80211_ATTR_TDLS_EXTERNAL_SETUP] = { .type = NLA_FLAG }, 344 [NL80211_ATTR_TDLS_INITIATOR] = { .type = NLA_FLAG }, 345 [NL80211_ATTR_DONT_WAIT_FOR_ACK] = { .type = NLA_FLAG }, 346 [NL80211_ATTR_PROBE_RESP] = { .type = NLA_BINARY, 347 .len = IEEE80211_MAX_DATA_LEN }, 348 [NL80211_ATTR_DFS_REGION] = { .type = NLA_U8 }, 349 [NL80211_ATTR_DISABLE_HT] = { .type = NLA_FLAG }, 350 [NL80211_ATTR_HT_CAPABILITY_MASK] = { 351 .len = NL80211_HT_CAPABILITY_LEN 352 }, 353 [NL80211_ATTR_NOACK_MAP] = { .type = NLA_U16 }, 354 [NL80211_ATTR_INACTIVITY_TIMEOUT] = { .type = NLA_U16 }, 355 [NL80211_ATTR_BG_SCAN_PERIOD] = { .type = NLA_U16 }, 356 [NL80211_ATTR_WDEV] = { .type = NLA_U64 }, 357 [NL80211_ATTR_USER_REG_HINT_TYPE] = { .type = NLA_U32 }, 358 [NL80211_ATTR_SAE_DATA] = { .type = NLA_BINARY, }, 359 [NL80211_ATTR_VHT_CAPABILITY] = { .len = NL80211_VHT_CAPABILITY_LEN }, 360 [NL80211_ATTR_SCAN_FLAGS] = { .type = NLA_U32 }, 361 [NL80211_ATTR_P2P_CTWINDOW] = { .type = NLA_U8 }, 362 [NL80211_ATTR_P2P_OPPPS] = { .type = NLA_U8 }, 363 [NL80211_ATTR_ACL_POLICY] = {. type = NLA_U32 }, 364 [NL80211_ATTR_MAC_ADDRS] = { .type = NLA_NESTED }, 365 [NL80211_ATTR_STA_CAPABILITY] = { .type = NLA_U16 }, 366 [NL80211_ATTR_STA_EXT_CAPABILITY] = { .type = NLA_BINARY, }, 367 [NL80211_ATTR_SPLIT_WIPHY_DUMP] = { .type = NLA_FLAG, }, 368 [NL80211_ATTR_DISABLE_VHT] = { .type = NLA_FLAG }, 369 [NL80211_ATTR_VHT_CAPABILITY_MASK] = { 370 .len = NL80211_VHT_CAPABILITY_LEN, 371 }, 372 [NL80211_ATTR_MDID] = { .type = NLA_U16 }, 373 [NL80211_ATTR_IE_RIC] = { .type = NLA_BINARY, 374 .len = IEEE80211_MAX_DATA_LEN }, 375 [NL80211_ATTR_PEER_AID] = { .type = NLA_U16 }, 376 [NL80211_ATTR_CH_SWITCH_COUNT] = { .type = NLA_U32 }, 377 [NL80211_ATTR_CH_SWITCH_BLOCK_TX] = { .type = NLA_FLAG }, 378 [NL80211_ATTR_CSA_IES] = { .type = NLA_NESTED }, 379 [NL80211_ATTR_CSA_C_OFF_BEACON] = { .type = NLA_BINARY }, 380 [NL80211_ATTR_CSA_C_OFF_PRESP] = { .type = NLA_BINARY }, 381 [NL80211_ATTR_STA_SUPPORTED_CHANNELS] = { .type = NLA_BINARY }, 382 [NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES] = { .type = NLA_BINARY }, 383 [NL80211_ATTR_HANDLE_DFS] = { .type = NLA_FLAG }, 384 [NL80211_ATTR_OPMODE_NOTIF] = { .type = NLA_U8 }, 385 [NL80211_ATTR_VENDOR_ID] = { .type = NLA_U32 }, 386 [NL80211_ATTR_VENDOR_SUBCMD] = { .type = NLA_U32 }, 387 [NL80211_ATTR_VENDOR_DATA] = { .type = NLA_BINARY }, 388 [NL80211_ATTR_QOS_MAP] = { .type = NLA_BINARY, 389 .len = IEEE80211_QOS_MAP_LEN_MAX }, 390 [NL80211_ATTR_MAC_HINT] = { .len = ETH_ALEN }, 391 [NL80211_ATTR_WIPHY_FREQ_HINT] = { .type = NLA_U32 }, 392 [NL80211_ATTR_TDLS_PEER_CAPABILITY] = { .type = NLA_U32 }, 393 [NL80211_ATTR_SOCKET_OWNER] = { .type = NLA_FLAG }, 394 [NL80211_ATTR_CSA_C_OFFSETS_TX] = { .type = NLA_BINARY }, 395 [NL80211_ATTR_USE_RRM] = { .type = NLA_FLAG }, 396 [NL80211_ATTR_TSID] = { .type = NLA_U8 }, 397 [NL80211_ATTR_USER_PRIO] = { .type = NLA_U8 }, 398 [NL80211_ATTR_ADMITTED_TIME] = { .type = NLA_U16 }, 399 [NL80211_ATTR_SMPS_MODE] = { .type = NLA_U8 }, 400 [NL80211_ATTR_MAC_MASK] = { .len = ETH_ALEN }, 401 [NL80211_ATTR_WIPHY_SELF_MANAGED_REG] = { .type = NLA_FLAG }, 402 [NL80211_ATTR_NETNS_FD] = { .type = NLA_U32 }, 403 [NL80211_ATTR_SCHED_SCAN_DELAY] = { .type = NLA_U32 }, 404 [NL80211_ATTR_REG_INDOOR] = { .type = NLA_FLAG }, 405 [NL80211_ATTR_PBSS] = { .type = NLA_FLAG }, 406 [NL80211_ATTR_BSS_SELECT] = { .type = NLA_NESTED }, 407 [NL80211_ATTR_STA_SUPPORT_P2P_PS] = { .type = NLA_U8 }, 408 [NL80211_ATTR_MU_MIMO_GROUP_DATA] = { 409 .len = VHT_MUMIMO_GROUPS_DATA_LEN 410 }, 411 [NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR] = { .len = ETH_ALEN }, 412 }; 413 414 /* policy for the key attributes */ 415 static const struct nla_policy nl80211_key_policy[NL80211_KEY_MAX + 1] = { 416 [NL80211_KEY_DATA] = { .type = NLA_BINARY, .len = WLAN_MAX_KEY_LEN }, 417 [NL80211_KEY_IDX] = { .type = NLA_U8 }, 418 [NL80211_KEY_CIPHER] = { .type = NLA_U32 }, 419 [NL80211_KEY_SEQ] = { .type = NLA_BINARY, .len = 16 }, 420 [NL80211_KEY_DEFAULT] = { .type = NLA_FLAG }, 421 [NL80211_KEY_DEFAULT_MGMT] = { .type = NLA_FLAG }, 422 [NL80211_KEY_TYPE] = { .type = NLA_U32 }, 423 [NL80211_KEY_DEFAULT_TYPES] = { .type = NLA_NESTED }, 424 }; 425 426 /* policy for the key default flags */ 427 static const struct nla_policy 428 nl80211_key_default_policy[NUM_NL80211_KEY_DEFAULT_TYPES] = { 429 [NL80211_KEY_DEFAULT_TYPE_UNICAST] = { .type = NLA_FLAG }, 430 [NL80211_KEY_DEFAULT_TYPE_MULTICAST] = { .type = NLA_FLAG }, 431 }; 432 433 /* policy for WoWLAN attributes */ 434 static const struct nla_policy 435 nl80211_wowlan_policy[NUM_NL80211_WOWLAN_TRIG] = { 436 [NL80211_WOWLAN_TRIG_ANY] = { .type = NLA_FLAG }, 437 [NL80211_WOWLAN_TRIG_DISCONNECT] = { .type = NLA_FLAG }, 438 [NL80211_WOWLAN_TRIG_MAGIC_PKT] = { .type = NLA_FLAG }, 439 [NL80211_WOWLAN_TRIG_PKT_PATTERN] = { .type = NLA_NESTED }, 440 [NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE] = { .type = NLA_FLAG }, 441 [NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST] = { .type = NLA_FLAG }, 442 [NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE] = { .type = NLA_FLAG }, 443 [NL80211_WOWLAN_TRIG_RFKILL_RELEASE] = { .type = NLA_FLAG }, 444 [NL80211_WOWLAN_TRIG_TCP_CONNECTION] = { .type = NLA_NESTED }, 445 [NL80211_WOWLAN_TRIG_NET_DETECT] = { .type = NLA_NESTED }, 446 }; 447 448 static const struct nla_policy 449 nl80211_wowlan_tcp_policy[NUM_NL80211_WOWLAN_TCP] = { 450 [NL80211_WOWLAN_TCP_SRC_IPV4] = { .type = NLA_U32 }, 451 [NL80211_WOWLAN_TCP_DST_IPV4] = { .type = NLA_U32 }, 452 [NL80211_WOWLAN_TCP_DST_MAC] = { .len = ETH_ALEN }, 453 [NL80211_WOWLAN_TCP_SRC_PORT] = { .type = NLA_U16 }, 454 [NL80211_WOWLAN_TCP_DST_PORT] = { .type = NLA_U16 }, 455 [NL80211_WOWLAN_TCP_DATA_PAYLOAD] = { .len = 1 }, 456 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ] = { 457 .len = sizeof(struct nl80211_wowlan_tcp_data_seq) 458 }, 459 [NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN] = { 460 .len = sizeof(struct nl80211_wowlan_tcp_data_token) 461 }, 462 [NL80211_WOWLAN_TCP_DATA_INTERVAL] = { .type = NLA_U32 }, 463 [NL80211_WOWLAN_TCP_WAKE_PAYLOAD] = { .len = 1 }, 464 [NL80211_WOWLAN_TCP_WAKE_MASK] = { .len = 1 }, 465 }; 466 467 /* policy for coalesce rule attributes */ 468 static const struct nla_policy 469 nl80211_coalesce_policy[NUM_NL80211_ATTR_COALESCE_RULE] = { 470 [NL80211_ATTR_COALESCE_RULE_DELAY] = { .type = NLA_U32 }, 471 [NL80211_ATTR_COALESCE_RULE_CONDITION] = { .type = NLA_U32 }, 472 [NL80211_ATTR_COALESCE_RULE_PKT_PATTERN] = { .type = NLA_NESTED }, 473 }; 474 475 /* policy for GTK rekey offload attributes */ 476 static const struct nla_policy 477 nl80211_rekey_policy[NUM_NL80211_REKEY_DATA] = { 478 [NL80211_REKEY_DATA_KEK] = { .len = NL80211_KEK_LEN }, 479 [NL80211_REKEY_DATA_KCK] = { .len = NL80211_KCK_LEN }, 480 [NL80211_REKEY_DATA_REPLAY_CTR] = { .len = NL80211_REPLAY_CTR_LEN }, 481 }; 482 483 static const struct nla_policy 484 nl80211_match_policy[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1] = { 485 [NL80211_SCHED_SCAN_MATCH_ATTR_SSID] = { .type = NLA_BINARY, 486 .len = IEEE80211_MAX_SSID_LEN }, 487 [NL80211_SCHED_SCAN_MATCH_ATTR_RSSI] = { .type = NLA_U32 }, 488 }; 489 490 static const struct nla_policy 491 nl80211_plan_policy[NL80211_SCHED_SCAN_PLAN_MAX + 1] = { 492 [NL80211_SCHED_SCAN_PLAN_INTERVAL] = { .type = NLA_U32 }, 493 [NL80211_SCHED_SCAN_PLAN_ITERATIONS] = { .type = NLA_U32 }, 494 }; 495 496 static const struct nla_policy 497 nl80211_bss_select_policy[NL80211_BSS_SELECT_ATTR_MAX + 1] = { 498 [NL80211_BSS_SELECT_ATTR_RSSI] = { .type = NLA_FLAG }, 499 [NL80211_BSS_SELECT_ATTR_BAND_PREF] = { .type = NLA_U32 }, 500 [NL80211_BSS_SELECT_ATTR_RSSI_ADJUST] = { 501 .len = sizeof(struct nl80211_bss_select_rssi_adjust) 502 }, 503 }; 504 505 static int nl80211_prepare_wdev_dump(struct sk_buff *skb, 506 struct netlink_callback *cb, 507 struct cfg80211_registered_device **rdev, 508 struct wireless_dev **wdev) 509 { 510 int err; 511 512 rtnl_lock(); 513 514 if (!cb->args[0]) { 515 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 516 nl80211_fam.attrbuf, nl80211_fam.maxattr, 517 nl80211_policy); 518 if (err) 519 goto out_unlock; 520 521 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 522 nl80211_fam.attrbuf); 523 if (IS_ERR(*wdev)) { 524 err = PTR_ERR(*wdev); 525 goto out_unlock; 526 } 527 *rdev = wiphy_to_rdev((*wdev)->wiphy); 528 /* 0 is the first index - add 1 to parse only once */ 529 cb->args[0] = (*rdev)->wiphy_idx + 1; 530 cb->args[1] = (*wdev)->identifier; 531 } else { 532 /* subtract the 1 again here */ 533 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 534 struct wireless_dev *tmp; 535 536 if (!wiphy) { 537 err = -ENODEV; 538 goto out_unlock; 539 } 540 *rdev = wiphy_to_rdev(wiphy); 541 *wdev = NULL; 542 543 list_for_each_entry(tmp, &(*rdev)->wiphy.wdev_list, list) { 544 if (tmp->identifier == cb->args[1]) { 545 *wdev = tmp; 546 break; 547 } 548 } 549 550 if (!*wdev) { 551 err = -ENODEV; 552 goto out_unlock; 553 } 554 } 555 556 return 0; 557 out_unlock: 558 rtnl_unlock(); 559 return err; 560 } 561 562 static void nl80211_finish_wdev_dump(struct cfg80211_registered_device *rdev) 563 { 564 rtnl_unlock(); 565 } 566 567 /* IE validation */ 568 static bool is_valid_ie_attr(const struct nlattr *attr) 569 { 570 const u8 *pos; 571 int len; 572 573 if (!attr) 574 return true; 575 576 pos = nla_data(attr); 577 len = nla_len(attr); 578 579 while (len) { 580 u8 elemlen; 581 582 if (len < 2) 583 return false; 584 len -= 2; 585 586 elemlen = pos[1]; 587 if (elemlen > len) 588 return false; 589 590 len -= elemlen; 591 pos += 2 + elemlen; 592 } 593 594 return true; 595 } 596 597 /* message building helper */ 598 static inline void *nl80211hdr_put(struct sk_buff *skb, u32 portid, u32 seq, 599 int flags, u8 cmd) 600 { 601 /* since there is no private header just add the generic one */ 602 return genlmsg_put(skb, portid, seq, &nl80211_fam, flags, cmd); 603 } 604 605 static int nl80211_msg_put_channel(struct sk_buff *msg, 606 struct ieee80211_channel *chan, 607 bool large) 608 { 609 /* Some channels must be completely excluded from the 610 * list to protect old user-space tools from breaking 611 */ 612 if (!large && chan->flags & 613 (IEEE80211_CHAN_NO_10MHZ | IEEE80211_CHAN_NO_20MHZ)) 614 return 0; 615 616 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_FREQ, 617 chan->center_freq)) 618 goto nla_put_failure; 619 620 if ((chan->flags & IEEE80211_CHAN_DISABLED) && 621 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_DISABLED)) 622 goto nla_put_failure; 623 if (chan->flags & IEEE80211_CHAN_NO_IR) { 624 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_IR)) 625 goto nla_put_failure; 626 if (nla_put_flag(msg, __NL80211_FREQUENCY_ATTR_NO_IBSS)) 627 goto nla_put_failure; 628 } 629 if (chan->flags & IEEE80211_CHAN_RADAR) { 630 if (nla_put_flag(msg, NL80211_FREQUENCY_ATTR_RADAR)) 631 goto nla_put_failure; 632 if (large) { 633 u32 time; 634 635 time = elapsed_jiffies_msecs(chan->dfs_state_entered); 636 637 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_STATE, 638 chan->dfs_state)) 639 goto nla_put_failure; 640 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_DFS_TIME, 641 time)) 642 goto nla_put_failure; 643 if (nla_put_u32(msg, 644 NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, 645 chan->dfs_cac_ms)) 646 goto nla_put_failure; 647 } 648 } 649 650 if (large) { 651 if ((chan->flags & IEEE80211_CHAN_NO_HT40MINUS) && 652 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_MINUS)) 653 goto nla_put_failure; 654 if ((chan->flags & IEEE80211_CHAN_NO_HT40PLUS) && 655 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_HT40_PLUS)) 656 goto nla_put_failure; 657 if ((chan->flags & IEEE80211_CHAN_NO_80MHZ) && 658 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_80MHZ)) 659 goto nla_put_failure; 660 if ((chan->flags & IEEE80211_CHAN_NO_160MHZ) && 661 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_160MHZ)) 662 goto nla_put_failure; 663 if ((chan->flags & IEEE80211_CHAN_INDOOR_ONLY) && 664 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_INDOOR_ONLY)) 665 goto nla_put_failure; 666 if ((chan->flags & IEEE80211_CHAN_IR_CONCURRENT) && 667 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_IR_CONCURRENT)) 668 goto nla_put_failure; 669 if ((chan->flags & IEEE80211_CHAN_NO_20MHZ) && 670 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_20MHZ)) 671 goto nla_put_failure; 672 if ((chan->flags & IEEE80211_CHAN_NO_10MHZ) && 673 nla_put_flag(msg, NL80211_FREQUENCY_ATTR_NO_10MHZ)) 674 goto nla_put_failure; 675 } 676 677 if (nla_put_u32(msg, NL80211_FREQUENCY_ATTR_MAX_TX_POWER, 678 DBM_TO_MBM(chan->max_power))) 679 goto nla_put_failure; 680 681 return 0; 682 683 nla_put_failure: 684 return -ENOBUFS; 685 } 686 687 /* netlink command implementations */ 688 689 struct key_parse { 690 struct key_params p; 691 int idx; 692 int type; 693 bool def, defmgmt; 694 bool def_uni, def_multi; 695 }; 696 697 static int nl80211_parse_key_new(struct nlattr *key, struct key_parse *k) 698 { 699 struct nlattr *tb[NL80211_KEY_MAX + 1]; 700 int err = nla_parse_nested(tb, NL80211_KEY_MAX, key, 701 nl80211_key_policy); 702 if (err) 703 return err; 704 705 k->def = !!tb[NL80211_KEY_DEFAULT]; 706 k->defmgmt = !!tb[NL80211_KEY_DEFAULT_MGMT]; 707 708 if (k->def) { 709 k->def_uni = true; 710 k->def_multi = true; 711 } 712 if (k->defmgmt) 713 k->def_multi = true; 714 715 if (tb[NL80211_KEY_IDX]) 716 k->idx = nla_get_u8(tb[NL80211_KEY_IDX]); 717 718 if (tb[NL80211_KEY_DATA]) { 719 k->p.key = nla_data(tb[NL80211_KEY_DATA]); 720 k->p.key_len = nla_len(tb[NL80211_KEY_DATA]); 721 } 722 723 if (tb[NL80211_KEY_SEQ]) { 724 k->p.seq = nla_data(tb[NL80211_KEY_SEQ]); 725 k->p.seq_len = nla_len(tb[NL80211_KEY_SEQ]); 726 } 727 728 if (tb[NL80211_KEY_CIPHER]) 729 k->p.cipher = nla_get_u32(tb[NL80211_KEY_CIPHER]); 730 731 if (tb[NL80211_KEY_TYPE]) { 732 k->type = nla_get_u32(tb[NL80211_KEY_TYPE]); 733 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 734 return -EINVAL; 735 } 736 737 if (tb[NL80211_KEY_DEFAULT_TYPES]) { 738 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 739 740 err = nla_parse_nested(kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 741 tb[NL80211_KEY_DEFAULT_TYPES], 742 nl80211_key_default_policy); 743 if (err) 744 return err; 745 746 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 747 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 748 } 749 750 return 0; 751 } 752 753 static int nl80211_parse_key_old(struct genl_info *info, struct key_parse *k) 754 { 755 if (info->attrs[NL80211_ATTR_KEY_DATA]) { 756 k->p.key = nla_data(info->attrs[NL80211_ATTR_KEY_DATA]); 757 k->p.key_len = nla_len(info->attrs[NL80211_ATTR_KEY_DATA]); 758 } 759 760 if (info->attrs[NL80211_ATTR_KEY_SEQ]) { 761 k->p.seq = nla_data(info->attrs[NL80211_ATTR_KEY_SEQ]); 762 k->p.seq_len = nla_len(info->attrs[NL80211_ATTR_KEY_SEQ]); 763 } 764 765 if (info->attrs[NL80211_ATTR_KEY_IDX]) 766 k->idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 767 768 if (info->attrs[NL80211_ATTR_KEY_CIPHER]) 769 k->p.cipher = nla_get_u32(info->attrs[NL80211_ATTR_KEY_CIPHER]); 770 771 k->def = !!info->attrs[NL80211_ATTR_KEY_DEFAULT]; 772 k->defmgmt = !!info->attrs[NL80211_ATTR_KEY_DEFAULT_MGMT]; 773 774 if (k->def) { 775 k->def_uni = true; 776 k->def_multi = true; 777 } 778 if (k->defmgmt) 779 k->def_multi = true; 780 781 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 782 k->type = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 783 if (k->type < 0 || k->type >= NUM_NL80211_KEYTYPES) 784 return -EINVAL; 785 } 786 787 if (info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES]) { 788 struct nlattr *kdt[NUM_NL80211_KEY_DEFAULT_TYPES]; 789 int err = nla_parse_nested( 790 kdt, NUM_NL80211_KEY_DEFAULT_TYPES - 1, 791 info->attrs[NL80211_ATTR_KEY_DEFAULT_TYPES], 792 nl80211_key_default_policy); 793 if (err) 794 return err; 795 796 k->def_uni = kdt[NL80211_KEY_DEFAULT_TYPE_UNICAST]; 797 k->def_multi = kdt[NL80211_KEY_DEFAULT_TYPE_MULTICAST]; 798 } 799 800 return 0; 801 } 802 803 static int nl80211_parse_key(struct genl_info *info, struct key_parse *k) 804 { 805 int err; 806 807 memset(k, 0, sizeof(*k)); 808 k->idx = -1; 809 k->type = -1; 810 811 if (info->attrs[NL80211_ATTR_KEY]) 812 err = nl80211_parse_key_new(info->attrs[NL80211_ATTR_KEY], k); 813 else 814 err = nl80211_parse_key_old(info, k); 815 816 if (err) 817 return err; 818 819 if (k->def && k->defmgmt) 820 return -EINVAL; 821 822 if (k->defmgmt) { 823 if (k->def_uni || !k->def_multi) 824 return -EINVAL; 825 } 826 827 if (k->idx != -1) { 828 if (k->defmgmt) { 829 if (k->idx < 4 || k->idx > 5) 830 return -EINVAL; 831 } else if (k->def) { 832 if (k->idx < 0 || k->idx > 3) 833 return -EINVAL; 834 } else { 835 if (k->idx < 0 || k->idx > 5) 836 return -EINVAL; 837 } 838 } 839 840 return 0; 841 } 842 843 static struct cfg80211_cached_keys * 844 nl80211_parse_connkeys(struct cfg80211_registered_device *rdev, 845 struct nlattr *keys, bool *no_ht) 846 { 847 struct key_parse parse; 848 struct nlattr *key; 849 struct cfg80211_cached_keys *result; 850 int rem, err, def = 0; 851 852 result = kzalloc(sizeof(*result), GFP_KERNEL); 853 if (!result) 854 return ERR_PTR(-ENOMEM); 855 856 result->def = -1; 857 result->defmgmt = -1; 858 859 nla_for_each_nested(key, keys, rem) { 860 memset(&parse, 0, sizeof(parse)); 861 parse.idx = -1; 862 863 err = nl80211_parse_key_new(key, &parse); 864 if (err) 865 goto error; 866 err = -EINVAL; 867 if (!parse.p.key) 868 goto error; 869 if (parse.idx < 0 || parse.idx > 4) 870 goto error; 871 if (parse.def) { 872 if (def) 873 goto error; 874 def = 1; 875 result->def = parse.idx; 876 if (!parse.def_uni || !parse.def_multi) 877 goto error; 878 } else if (parse.defmgmt) 879 goto error; 880 err = cfg80211_validate_key_settings(rdev, &parse.p, 881 parse.idx, false, NULL); 882 if (err) 883 goto error; 884 result->params[parse.idx].cipher = parse.p.cipher; 885 result->params[parse.idx].key_len = parse.p.key_len; 886 result->params[parse.idx].key = result->data[parse.idx]; 887 memcpy(result->data[parse.idx], parse.p.key, parse.p.key_len); 888 889 if (parse.p.cipher == WLAN_CIPHER_SUITE_WEP40 || 890 parse.p.cipher == WLAN_CIPHER_SUITE_WEP104) { 891 if (no_ht) 892 *no_ht = true; 893 } 894 } 895 896 return result; 897 error: 898 kfree(result); 899 return ERR_PTR(err); 900 } 901 902 static int nl80211_key_allowed(struct wireless_dev *wdev) 903 { 904 ASSERT_WDEV_LOCK(wdev); 905 906 switch (wdev->iftype) { 907 case NL80211_IFTYPE_AP: 908 case NL80211_IFTYPE_AP_VLAN: 909 case NL80211_IFTYPE_P2P_GO: 910 case NL80211_IFTYPE_MESH_POINT: 911 break; 912 case NL80211_IFTYPE_ADHOC: 913 case NL80211_IFTYPE_STATION: 914 case NL80211_IFTYPE_P2P_CLIENT: 915 if (!wdev->current_bss) 916 return -ENOLINK; 917 break; 918 case NL80211_IFTYPE_UNSPECIFIED: 919 case NL80211_IFTYPE_OCB: 920 case NL80211_IFTYPE_MONITOR: 921 case NL80211_IFTYPE_P2P_DEVICE: 922 case NL80211_IFTYPE_WDS: 923 case NUM_NL80211_IFTYPES: 924 return -EINVAL; 925 } 926 927 return 0; 928 } 929 930 static struct ieee80211_channel *nl80211_get_valid_chan(struct wiphy *wiphy, 931 struct nlattr *tb) 932 { 933 struct ieee80211_channel *chan; 934 935 if (tb == NULL) 936 return NULL; 937 chan = ieee80211_get_channel(wiphy, nla_get_u32(tb)); 938 if (!chan || chan->flags & IEEE80211_CHAN_DISABLED) 939 return NULL; 940 return chan; 941 } 942 943 static int nl80211_put_iftypes(struct sk_buff *msg, u32 attr, u16 ifmodes) 944 { 945 struct nlattr *nl_modes = nla_nest_start(msg, attr); 946 int i; 947 948 if (!nl_modes) 949 goto nla_put_failure; 950 951 i = 0; 952 while (ifmodes) { 953 if ((ifmodes & 1) && nla_put_flag(msg, i)) 954 goto nla_put_failure; 955 ifmodes >>= 1; 956 i++; 957 } 958 959 nla_nest_end(msg, nl_modes); 960 return 0; 961 962 nla_put_failure: 963 return -ENOBUFS; 964 } 965 966 static int nl80211_put_iface_combinations(struct wiphy *wiphy, 967 struct sk_buff *msg, 968 bool large) 969 { 970 struct nlattr *nl_combis; 971 int i, j; 972 973 nl_combis = nla_nest_start(msg, 974 NL80211_ATTR_INTERFACE_COMBINATIONS); 975 if (!nl_combis) 976 goto nla_put_failure; 977 978 for (i = 0; i < wiphy->n_iface_combinations; i++) { 979 const struct ieee80211_iface_combination *c; 980 struct nlattr *nl_combi, *nl_limits; 981 982 c = &wiphy->iface_combinations[i]; 983 984 nl_combi = nla_nest_start(msg, i + 1); 985 if (!nl_combi) 986 goto nla_put_failure; 987 988 nl_limits = nla_nest_start(msg, NL80211_IFACE_COMB_LIMITS); 989 if (!nl_limits) 990 goto nla_put_failure; 991 992 for (j = 0; j < c->n_limits; j++) { 993 struct nlattr *nl_limit; 994 995 nl_limit = nla_nest_start(msg, j + 1); 996 if (!nl_limit) 997 goto nla_put_failure; 998 if (nla_put_u32(msg, NL80211_IFACE_LIMIT_MAX, 999 c->limits[j].max)) 1000 goto nla_put_failure; 1001 if (nl80211_put_iftypes(msg, NL80211_IFACE_LIMIT_TYPES, 1002 c->limits[j].types)) 1003 goto nla_put_failure; 1004 nla_nest_end(msg, nl_limit); 1005 } 1006 1007 nla_nest_end(msg, nl_limits); 1008 1009 if (c->beacon_int_infra_match && 1010 nla_put_flag(msg, NL80211_IFACE_COMB_STA_AP_BI_MATCH)) 1011 goto nla_put_failure; 1012 if (nla_put_u32(msg, NL80211_IFACE_COMB_NUM_CHANNELS, 1013 c->num_different_channels) || 1014 nla_put_u32(msg, NL80211_IFACE_COMB_MAXNUM, 1015 c->max_interfaces)) 1016 goto nla_put_failure; 1017 if (large && 1018 (nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS, 1019 c->radar_detect_widths) || 1020 nla_put_u32(msg, NL80211_IFACE_COMB_RADAR_DETECT_REGIONS, 1021 c->radar_detect_regions))) 1022 goto nla_put_failure; 1023 1024 nla_nest_end(msg, nl_combi); 1025 } 1026 1027 nla_nest_end(msg, nl_combis); 1028 1029 return 0; 1030 nla_put_failure: 1031 return -ENOBUFS; 1032 } 1033 1034 #ifdef CONFIG_PM 1035 static int nl80211_send_wowlan_tcp_caps(struct cfg80211_registered_device *rdev, 1036 struct sk_buff *msg) 1037 { 1038 const struct wiphy_wowlan_tcp_support *tcp = rdev->wiphy.wowlan->tcp; 1039 struct nlattr *nl_tcp; 1040 1041 if (!tcp) 1042 return 0; 1043 1044 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 1045 if (!nl_tcp) 1046 return -ENOBUFS; 1047 1048 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1049 tcp->data_payload_max)) 1050 return -ENOBUFS; 1051 1052 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 1053 tcp->data_payload_max)) 1054 return -ENOBUFS; 1055 1056 if (tcp->seq && nla_put_flag(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ)) 1057 return -ENOBUFS; 1058 1059 if (tcp->tok && nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 1060 sizeof(*tcp->tok), tcp->tok)) 1061 return -ENOBUFS; 1062 1063 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 1064 tcp->data_interval_max)) 1065 return -ENOBUFS; 1066 1067 if (nla_put_u32(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 1068 tcp->wake_payload_max)) 1069 return -ENOBUFS; 1070 1071 nla_nest_end(msg, nl_tcp); 1072 return 0; 1073 } 1074 1075 static int nl80211_send_wowlan(struct sk_buff *msg, 1076 struct cfg80211_registered_device *rdev, 1077 bool large) 1078 { 1079 struct nlattr *nl_wowlan; 1080 1081 if (!rdev->wiphy.wowlan) 1082 return 0; 1083 1084 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED); 1085 if (!nl_wowlan) 1086 return -ENOBUFS; 1087 1088 if (((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_ANY) && 1089 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 1090 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_DISCONNECT) && 1091 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 1092 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT) && 1093 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 1094 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_SUPPORTS_GTK_REKEY) && 1095 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED)) || 1096 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE) && 1097 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 1098 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ) && 1099 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 1100 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE) && 1101 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 1102 ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE) && 1103 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 1104 return -ENOBUFS; 1105 1106 if (rdev->wiphy.wowlan->n_patterns) { 1107 struct nl80211_pattern_support pat = { 1108 .max_patterns = rdev->wiphy.wowlan->n_patterns, 1109 .min_pattern_len = rdev->wiphy.wowlan->pattern_min_len, 1110 .max_pattern_len = rdev->wiphy.wowlan->pattern_max_len, 1111 .max_pkt_offset = rdev->wiphy.wowlan->max_pkt_offset, 1112 }; 1113 1114 if (nla_put(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 1115 sizeof(pat), &pat)) 1116 return -ENOBUFS; 1117 } 1118 1119 if ((rdev->wiphy.wowlan->flags & WIPHY_WOWLAN_NET_DETECT) && 1120 nla_put_u32(msg, NL80211_WOWLAN_TRIG_NET_DETECT, 1121 rdev->wiphy.wowlan->max_nd_match_sets)) 1122 return -ENOBUFS; 1123 1124 if (large && nl80211_send_wowlan_tcp_caps(rdev, msg)) 1125 return -ENOBUFS; 1126 1127 nla_nest_end(msg, nl_wowlan); 1128 1129 return 0; 1130 } 1131 #endif 1132 1133 static int nl80211_send_coalesce(struct sk_buff *msg, 1134 struct cfg80211_registered_device *rdev) 1135 { 1136 struct nl80211_coalesce_rule_support rule; 1137 1138 if (!rdev->wiphy.coalesce) 1139 return 0; 1140 1141 rule.max_rules = rdev->wiphy.coalesce->n_rules; 1142 rule.max_delay = rdev->wiphy.coalesce->max_delay; 1143 rule.pat.max_patterns = rdev->wiphy.coalesce->n_patterns; 1144 rule.pat.min_pattern_len = rdev->wiphy.coalesce->pattern_min_len; 1145 rule.pat.max_pattern_len = rdev->wiphy.coalesce->pattern_max_len; 1146 rule.pat.max_pkt_offset = rdev->wiphy.coalesce->max_pkt_offset; 1147 1148 if (nla_put(msg, NL80211_ATTR_COALESCE_RULE, sizeof(rule), &rule)) 1149 return -ENOBUFS; 1150 1151 return 0; 1152 } 1153 1154 static int nl80211_send_band_rateinfo(struct sk_buff *msg, 1155 struct ieee80211_supported_band *sband) 1156 { 1157 struct nlattr *nl_rates, *nl_rate; 1158 struct ieee80211_rate *rate; 1159 int i; 1160 1161 /* add HT info */ 1162 if (sband->ht_cap.ht_supported && 1163 (nla_put(msg, NL80211_BAND_ATTR_HT_MCS_SET, 1164 sizeof(sband->ht_cap.mcs), 1165 &sband->ht_cap.mcs) || 1166 nla_put_u16(msg, NL80211_BAND_ATTR_HT_CAPA, 1167 sband->ht_cap.cap) || 1168 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_FACTOR, 1169 sband->ht_cap.ampdu_factor) || 1170 nla_put_u8(msg, NL80211_BAND_ATTR_HT_AMPDU_DENSITY, 1171 sband->ht_cap.ampdu_density))) 1172 return -ENOBUFS; 1173 1174 /* add VHT info */ 1175 if (sband->vht_cap.vht_supported && 1176 (nla_put(msg, NL80211_BAND_ATTR_VHT_MCS_SET, 1177 sizeof(sband->vht_cap.vht_mcs), 1178 &sband->vht_cap.vht_mcs) || 1179 nla_put_u32(msg, NL80211_BAND_ATTR_VHT_CAPA, 1180 sband->vht_cap.cap))) 1181 return -ENOBUFS; 1182 1183 /* add bitrates */ 1184 nl_rates = nla_nest_start(msg, NL80211_BAND_ATTR_RATES); 1185 if (!nl_rates) 1186 return -ENOBUFS; 1187 1188 for (i = 0; i < sband->n_bitrates; i++) { 1189 nl_rate = nla_nest_start(msg, i); 1190 if (!nl_rate) 1191 return -ENOBUFS; 1192 1193 rate = &sband->bitrates[i]; 1194 if (nla_put_u32(msg, NL80211_BITRATE_ATTR_RATE, 1195 rate->bitrate)) 1196 return -ENOBUFS; 1197 if ((rate->flags & IEEE80211_RATE_SHORT_PREAMBLE) && 1198 nla_put_flag(msg, 1199 NL80211_BITRATE_ATTR_2GHZ_SHORTPREAMBLE)) 1200 return -ENOBUFS; 1201 1202 nla_nest_end(msg, nl_rate); 1203 } 1204 1205 nla_nest_end(msg, nl_rates); 1206 1207 return 0; 1208 } 1209 1210 static int 1211 nl80211_send_mgmt_stypes(struct sk_buff *msg, 1212 const struct ieee80211_txrx_stypes *mgmt_stypes) 1213 { 1214 u16 stypes; 1215 struct nlattr *nl_ftypes, *nl_ifs; 1216 enum nl80211_iftype ift; 1217 int i; 1218 1219 if (!mgmt_stypes) 1220 return 0; 1221 1222 nl_ifs = nla_nest_start(msg, NL80211_ATTR_TX_FRAME_TYPES); 1223 if (!nl_ifs) 1224 return -ENOBUFS; 1225 1226 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1227 nl_ftypes = nla_nest_start(msg, ift); 1228 if (!nl_ftypes) 1229 return -ENOBUFS; 1230 i = 0; 1231 stypes = mgmt_stypes[ift].tx; 1232 while (stypes) { 1233 if ((stypes & 1) && 1234 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1235 (i << 4) | IEEE80211_FTYPE_MGMT)) 1236 return -ENOBUFS; 1237 stypes >>= 1; 1238 i++; 1239 } 1240 nla_nest_end(msg, nl_ftypes); 1241 } 1242 1243 nla_nest_end(msg, nl_ifs); 1244 1245 nl_ifs = nla_nest_start(msg, NL80211_ATTR_RX_FRAME_TYPES); 1246 if (!nl_ifs) 1247 return -ENOBUFS; 1248 1249 for (ift = 0; ift < NUM_NL80211_IFTYPES; ift++) { 1250 nl_ftypes = nla_nest_start(msg, ift); 1251 if (!nl_ftypes) 1252 return -ENOBUFS; 1253 i = 0; 1254 stypes = mgmt_stypes[ift].rx; 1255 while (stypes) { 1256 if ((stypes & 1) && 1257 nla_put_u16(msg, NL80211_ATTR_FRAME_TYPE, 1258 (i << 4) | IEEE80211_FTYPE_MGMT)) 1259 return -ENOBUFS; 1260 stypes >>= 1; 1261 i++; 1262 } 1263 nla_nest_end(msg, nl_ftypes); 1264 } 1265 nla_nest_end(msg, nl_ifs); 1266 1267 return 0; 1268 } 1269 1270 struct nl80211_dump_wiphy_state { 1271 s64 filter_wiphy; 1272 long start; 1273 long split_start, band_start, chan_start, capa_start; 1274 bool split; 1275 }; 1276 1277 static int nl80211_send_wiphy(struct cfg80211_registered_device *rdev, 1278 enum nl80211_commands cmd, 1279 struct sk_buff *msg, u32 portid, u32 seq, 1280 int flags, struct nl80211_dump_wiphy_state *state) 1281 { 1282 void *hdr; 1283 struct nlattr *nl_bands, *nl_band; 1284 struct nlattr *nl_freqs, *nl_freq; 1285 struct nlattr *nl_cmds; 1286 enum nl80211_band band; 1287 struct ieee80211_channel *chan; 1288 int i; 1289 const struct ieee80211_txrx_stypes *mgmt_stypes = 1290 rdev->wiphy.mgmt_stypes; 1291 u32 features; 1292 1293 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 1294 if (!hdr) 1295 return -ENOBUFS; 1296 1297 if (WARN_ON(!state)) 1298 return -EINVAL; 1299 1300 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 1301 nla_put_string(msg, NL80211_ATTR_WIPHY_NAME, 1302 wiphy_name(&rdev->wiphy)) || 1303 nla_put_u32(msg, NL80211_ATTR_GENERATION, 1304 cfg80211_rdev_list_generation)) 1305 goto nla_put_failure; 1306 1307 if (cmd != NL80211_CMD_NEW_WIPHY) 1308 goto finish; 1309 1310 switch (state->split_start) { 1311 case 0: 1312 if (nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_SHORT, 1313 rdev->wiphy.retry_short) || 1314 nla_put_u8(msg, NL80211_ATTR_WIPHY_RETRY_LONG, 1315 rdev->wiphy.retry_long) || 1316 nla_put_u32(msg, NL80211_ATTR_WIPHY_FRAG_THRESHOLD, 1317 rdev->wiphy.frag_threshold) || 1318 nla_put_u32(msg, NL80211_ATTR_WIPHY_RTS_THRESHOLD, 1319 rdev->wiphy.rts_threshold) || 1320 nla_put_u8(msg, NL80211_ATTR_WIPHY_COVERAGE_CLASS, 1321 rdev->wiphy.coverage_class) || 1322 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCAN_SSIDS, 1323 rdev->wiphy.max_scan_ssids) || 1324 nla_put_u8(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS, 1325 rdev->wiphy.max_sched_scan_ssids) || 1326 nla_put_u16(msg, NL80211_ATTR_MAX_SCAN_IE_LEN, 1327 rdev->wiphy.max_scan_ie_len) || 1328 nla_put_u16(msg, NL80211_ATTR_MAX_SCHED_SCAN_IE_LEN, 1329 rdev->wiphy.max_sched_scan_ie_len) || 1330 nla_put_u8(msg, NL80211_ATTR_MAX_MATCH_SETS, 1331 rdev->wiphy.max_match_sets) || 1332 nla_put_u32(msg, NL80211_ATTR_MAX_NUM_SCHED_SCAN_PLANS, 1333 rdev->wiphy.max_sched_scan_plans) || 1334 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_INTERVAL, 1335 rdev->wiphy.max_sched_scan_plan_interval) || 1336 nla_put_u32(msg, NL80211_ATTR_MAX_SCAN_PLAN_ITERATIONS, 1337 rdev->wiphy.max_sched_scan_plan_iterations)) 1338 goto nla_put_failure; 1339 1340 if ((rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN) && 1341 nla_put_flag(msg, NL80211_ATTR_SUPPORT_IBSS_RSN)) 1342 goto nla_put_failure; 1343 if ((rdev->wiphy.flags & WIPHY_FLAG_MESH_AUTH) && 1344 nla_put_flag(msg, NL80211_ATTR_SUPPORT_MESH_AUTH)) 1345 goto nla_put_failure; 1346 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) && 1347 nla_put_flag(msg, NL80211_ATTR_SUPPORT_AP_UAPSD)) 1348 goto nla_put_failure; 1349 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_FW_ROAM) && 1350 nla_put_flag(msg, NL80211_ATTR_ROAM_SUPPORT)) 1351 goto nla_put_failure; 1352 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) && 1353 nla_put_flag(msg, NL80211_ATTR_TDLS_SUPPORT)) 1354 goto nla_put_failure; 1355 if ((rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP) && 1356 nla_put_flag(msg, NL80211_ATTR_TDLS_EXTERNAL_SETUP)) 1357 goto nla_put_failure; 1358 state->split_start++; 1359 if (state->split) 1360 break; 1361 case 1: 1362 if (nla_put(msg, NL80211_ATTR_CIPHER_SUITES, 1363 sizeof(u32) * rdev->wiphy.n_cipher_suites, 1364 rdev->wiphy.cipher_suites)) 1365 goto nla_put_failure; 1366 1367 if (nla_put_u8(msg, NL80211_ATTR_MAX_NUM_PMKIDS, 1368 rdev->wiphy.max_num_pmkids)) 1369 goto nla_put_failure; 1370 1371 if ((rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 1372 nla_put_flag(msg, NL80211_ATTR_CONTROL_PORT_ETHERTYPE)) 1373 goto nla_put_failure; 1374 1375 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_TX, 1376 rdev->wiphy.available_antennas_tx) || 1377 nla_put_u32(msg, NL80211_ATTR_WIPHY_ANTENNA_AVAIL_RX, 1378 rdev->wiphy.available_antennas_rx)) 1379 goto nla_put_failure; 1380 1381 if ((rdev->wiphy.flags & WIPHY_FLAG_AP_PROBE_RESP_OFFLOAD) && 1382 nla_put_u32(msg, NL80211_ATTR_PROBE_RESP_OFFLOAD, 1383 rdev->wiphy.probe_resp_offload)) 1384 goto nla_put_failure; 1385 1386 if ((rdev->wiphy.available_antennas_tx || 1387 rdev->wiphy.available_antennas_rx) && 1388 rdev->ops->get_antenna) { 1389 u32 tx_ant = 0, rx_ant = 0; 1390 int res; 1391 1392 res = rdev_get_antenna(rdev, &tx_ant, &rx_ant); 1393 if (!res) { 1394 if (nla_put_u32(msg, 1395 NL80211_ATTR_WIPHY_ANTENNA_TX, 1396 tx_ant) || 1397 nla_put_u32(msg, 1398 NL80211_ATTR_WIPHY_ANTENNA_RX, 1399 rx_ant)) 1400 goto nla_put_failure; 1401 } 1402 } 1403 1404 state->split_start++; 1405 if (state->split) 1406 break; 1407 case 2: 1408 if (nl80211_put_iftypes(msg, NL80211_ATTR_SUPPORTED_IFTYPES, 1409 rdev->wiphy.interface_modes)) 1410 goto nla_put_failure; 1411 state->split_start++; 1412 if (state->split) 1413 break; 1414 case 3: 1415 nl_bands = nla_nest_start(msg, NL80211_ATTR_WIPHY_BANDS); 1416 if (!nl_bands) 1417 goto nla_put_failure; 1418 1419 for (band = state->band_start; 1420 band < NUM_NL80211_BANDS; band++) { 1421 struct ieee80211_supported_band *sband; 1422 1423 sband = rdev->wiphy.bands[band]; 1424 1425 if (!sband) 1426 continue; 1427 1428 nl_band = nla_nest_start(msg, band); 1429 if (!nl_band) 1430 goto nla_put_failure; 1431 1432 switch (state->chan_start) { 1433 case 0: 1434 if (nl80211_send_band_rateinfo(msg, sband)) 1435 goto nla_put_failure; 1436 state->chan_start++; 1437 if (state->split) 1438 break; 1439 default: 1440 /* add frequencies */ 1441 nl_freqs = nla_nest_start( 1442 msg, NL80211_BAND_ATTR_FREQS); 1443 if (!nl_freqs) 1444 goto nla_put_failure; 1445 1446 for (i = state->chan_start - 1; 1447 i < sband->n_channels; 1448 i++) { 1449 nl_freq = nla_nest_start(msg, i); 1450 if (!nl_freq) 1451 goto nla_put_failure; 1452 1453 chan = &sband->channels[i]; 1454 1455 if (nl80211_msg_put_channel( 1456 msg, chan, 1457 state->split)) 1458 goto nla_put_failure; 1459 1460 nla_nest_end(msg, nl_freq); 1461 if (state->split) 1462 break; 1463 } 1464 if (i < sband->n_channels) 1465 state->chan_start = i + 2; 1466 else 1467 state->chan_start = 0; 1468 nla_nest_end(msg, nl_freqs); 1469 } 1470 1471 nla_nest_end(msg, nl_band); 1472 1473 if (state->split) { 1474 /* start again here */ 1475 if (state->chan_start) 1476 band--; 1477 break; 1478 } 1479 } 1480 nla_nest_end(msg, nl_bands); 1481 1482 if (band < NUM_NL80211_BANDS) 1483 state->band_start = band + 1; 1484 else 1485 state->band_start = 0; 1486 1487 /* if bands & channels are done, continue outside */ 1488 if (state->band_start == 0 && state->chan_start == 0) 1489 state->split_start++; 1490 if (state->split) 1491 break; 1492 case 4: 1493 nl_cmds = nla_nest_start(msg, NL80211_ATTR_SUPPORTED_COMMANDS); 1494 if (!nl_cmds) 1495 goto nla_put_failure; 1496 1497 i = 0; 1498 #define CMD(op, n) \ 1499 do { \ 1500 if (rdev->ops->op) { \ 1501 i++; \ 1502 if (nla_put_u32(msg, i, NL80211_CMD_ ## n)) \ 1503 goto nla_put_failure; \ 1504 } \ 1505 } while (0) 1506 1507 CMD(add_virtual_intf, NEW_INTERFACE); 1508 CMD(change_virtual_intf, SET_INTERFACE); 1509 CMD(add_key, NEW_KEY); 1510 CMD(start_ap, START_AP); 1511 CMD(add_station, NEW_STATION); 1512 CMD(add_mpath, NEW_MPATH); 1513 CMD(update_mesh_config, SET_MESH_CONFIG); 1514 CMD(change_bss, SET_BSS); 1515 CMD(auth, AUTHENTICATE); 1516 CMD(assoc, ASSOCIATE); 1517 CMD(deauth, DEAUTHENTICATE); 1518 CMD(disassoc, DISASSOCIATE); 1519 CMD(join_ibss, JOIN_IBSS); 1520 CMD(join_mesh, JOIN_MESH); 1521 CMD(set_pmksa, SET_PMKSA); 1522 CMD(del_pmksa, DEL_PMKSA); 1523 CMD(flush_pmksa, FLUSH_PMKSA); 1524 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) 1525 CMD(remain_on_channel, REMAIN_ON_CHANNEL); 1526 CMD(set_bitrate_mask, SET_TX_BITRATE_MASK); 1527 CMD(mgmt_tx, FRAME); 1528 CMD(mgmt_tx_cancel_wait, FRAME_WAIT_CANCEL); 1529 if (rdev->wiphy.flags & WIPHY_FLAG_NETNS_OK) { 1530 i++; 1531 if (nla_put_u32(msg, i, NL80211_CMD_SET_WIPHY_NETNS)) 1532 goto nla_put_failure; 1533 } 1534 if (rdev->ops->set_monitor_channel || rdev->ops->start_ap || 1535 rdev->ops->join_mesh) { 1536 i++; 1537 if (nla_put_u32(msg, i, NL80211_CMD_SET_CHANNEL)) 1538 goto nla_put_failure; 1539 } 1540 CMD(set_wds_peer, SET_WDS_PEER); 1541 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) { 1542 CMD(tdls_mgmt, TDLS_MGMT); 1543 CMD(tdls_oper, TDLS_OPER); 1544 } 1545 if (rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 1546 CMD(sched_scan_start, START_SCHED_SCAN); 1547 CMD(probe_client, PROBE_CLIENT); 1548 CMD(set_noack_map, SET_NOACK_MAP); 1549 if (rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS) { 1550 i++; 1551 if (nla_put_u32(msg, i, NL80211_CMD_REGISTER_BEACONS)) 1552 goto nla_put_failure; 1553 } 1554 CMD(start_p2p_device, START_P2P_DEVICE); 1555 CMD(set_mcast_rate, SET_MCAST_RATE); 1556 #ifdef CONFIG_NL80211_TESTMODE 1557 CMD(testmode_cmd, TESTMODE); 1558 #endif 1559 if (state->split) { 1560 CMD(crit_proto_start, CRIT_PROTOCOL_START); 1561 CMD(crit_proto_stop, CRIT_PROTOCOL_STOP); 1562 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH) 1563 CMD(channel_switch, CHANNEL_SWITCH); 1564 CMD(set_qos_map, SET_QOS_MAP); 1565 if (rdev->wiphy.features & 1566 NL80211_FEATURE_SUPPORTS_WMM_ADMISSION) 1567 CMD(add_tx_ts, ADD_TX_TS); 1568 } 1569 /* add into the if now */ 1570 #undef CMD 1571 1572 if (rdev->ops->connect || rdev->ops->auth) { 1573 i++; 1574 if (nla_put_u32(msg, i, NL80211_CMD_CONNECT)) 1575 goto nla_put_failure; 1576 } 1577 1578 if (rdev->ops->disconnect || rdev->ops->deauth) { 1579 i++; 1580 if (nla_put_u32(msg, i, NL80211_CMD_DISCONNECT)) 1581 goto nla_put_failure; 1582 } 1583 1584 nla_nest_end(msg, nl_cmds); 1585 state->split_start++; 1586 if (state->split) 1587 break; 1588 case 5: 1589 if (rdev->ops->remain_on_channel && 1590 (rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL) && 1591 nla_put_u32(msg, 1592 NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION, 1593 rdev->wiphy.max_remain_on_channel_duration)) 1594 goto nla_put_failure; 1595 1596 if ((rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX) && 1597 nla_put_flag(msg, NL80211_ATTR_OFFCHANNEL_TX_OK)) 1598 goto nla_put_failure; 1599 1600 if (nl80211_send_mgmt_stypes(msg, mgmt_stypes)) 1601 goto nla_put_failure; 1602 state->split_start++; 1603 if (state->split) 1604 break; 1605 case 6: 1606 #ifdef CONFIG_PM 1607 if (nl80211_send_wowlan(msg, rdev, state->split)) 1608 goto nla_put_failure; 1609 state->split_start++; 1610 if (state->split) 1611 break; 1612 #else 1613 state->split_start++; 1614 #endif 1615 case 7: 1616 if (nl80211_put_iftypes(msg, NL80211_ATTR_SOFTWARE_IFTYPES, 1617 rdev->wiphy.software_iftypes)) 1618 goto nla_put_failure; 1619 1620 if (nl80211_put_iface_combinations(&rdev->wiphy, msg, 1621 state->split)) 1622 goto nla_put_failure; 1623 1624 state->split_start++; 1625 if (state->split) 1626 break; 1627 case 8: 1628 if ((rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME) && 1629 nla_put_u32(msg, NL80211_ATTR_DEVICE_AP_SME, 1630 rdev->wiphy.ap_sme_capa)) 1631 goto nla_put_failure; 1632 1633 features = rdev->wiphy.features; 1634 /* 1635 * We can only add the per-channel limit information if the 1636 * dump is split, otherwise it makes it too big. Therefore 1637 * only advertise it in that case. 1638 */ 1639 if (state->split) 1640 features |= NL80211_FEATURE_ADVERTISE_CHAN_LIMITS; 1641 if (nla_put_u32(msg, NL80211_ATTR_FEATURE_FLAGS, features)) 1642 goto nla_put_failure; 1643 1644 if (rdev->wiphy.ht_capa_mod_mask && 1645 nla_put(msg, NL80211_ATTR_HT_CAPABILITY_MASK, 1646 sizeof(*rdev->wiphy.ht_capa_mod_mask), 1647 rdev->wiphy.ht_capa_mod_mask)) 1648 goto nla_put_failure; 1649 1650 if (rdev->wiphy.flags & WIPHY_FLAG_HAVE_AP_SME && 1651 rdev->wiphy.max_acl_mac_addrs && 1652 nla_put_u32(msg, NL80211_ATTR_MAC_ACL_MAX, 1653 rdev->wiphy.max_acl_mac_addrs)) 1654 goto nla_put_failure; 1655 1656 /* 1657 * Any information below this point is only available to 1658 * applications that can deal with it being split. This 1659 * helps ensure that newly added capabilities don't break 1660 * older tools by overrunning their buffers. 1661 * 1662 * We still increment split_start so that in the split 1663 * case we'll continue with more data in the next round, 1664 * but break unconditionally so unsplit data stops here. 1665 */ 1666 state->split_start++; 1667 break; 1668 case 9: 1669 if (rdev->wiphy.extended_capabilities && 1670 (nla_put(msg, NL80211_ATTR_EXT_CAPA, 1671 rdev->wiphy.extended_capabilities_len, 1672 rdev->wiphy.extended_capabilities) || 1673 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1674 rdev->wiphy.extended_capabilities_len, 1675 rdev->wiphy.extended_capabilities_mask))) 1676 goto nla_put_failure; 1677 1678 if (rdev->wiphy.vht_capa_mod_mask && 1679 nla_put(msg, NL80211_ATTR_VHT_CAPABILITY_MASK, 1680 sizeof(*rdev->wiphy.vht_capa_mod_mask), 1681 rdev->wiphy.vht_capa_mod_mask)) 1682 goto nla_put_failure; 1683 1684 state->split_start++; 1685 break; 1686 case 10: 1687 if (nl80211_send_coalesce(msg, rdev)) 1688 goto nla_put_failure; 1689 1690 if ((rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ) && 1691 (nla_put_flag(msg, NL80211_ATTR_SUPPORT_5_MHZ) || 1692 nla_put_flag(msg, NL80211_ATTR_SUPPORT_10_MHZ))) 1693 goto nla_put_failure; 1694 1695 if (rdev->wiphy.max_ap_assoc_sta && 1696 nla_put_u32(msg, NL80211_ATTR_MAX_AP_ASSOC_STA, 1697 rdev->wiphy.max_ap_assoc_sta)) 1698 goto nla_put_failure; 1699 1700 state->split_start++; 1701 break; 1702 case 11: 1703 if (rdev->wiphy.n_vendor_commands) { 1704 const struct nl80211_vendor_cmd_info *info; 1705 struct nlattr *nested; 1706 1707 nested = nla_nest_start(msg, NL80211_ATTR_VENDOR_DATA); 1708 if (!nested) 1709 goto nla_put_failure; 1710 1711 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 1712 info = &rdev->wiphy.vendor_commands[i].info; 1713 if (nla_put(msg, i + 1, sizeof(*info), info)) 1714 goto nla_put_failure; 1715 } 1716 nla_nest_end(msg, nested); 1717 } 1718 1719 if (rdev->wiphy.n_vendor_events) { 1720 const struct nl80211_vendor_cmd_info *info; 1721 struct nlattr *nested; 1722 1723 nested = nla_nest_start(msg, 1724 NL80211_ATTR_VENDOR_EVENTS); 1725 if (!nested) 1726 goto nla_put_failure; 1727 1728 for (i = 0; i < rdev->wiphy.n_vendor_events; i++) { 1729 info = &rdev->wiphy.vendor_events[i]; 1730 if (nla_put(msg, i + 1, sizeof(*info), info)) 1731 goto nla_put_failure; 1732 } 1733 nla_nest_end(msg, nested); 1734 } 1735 state->split_start++; 1736 break; 1737 case 12: 1738 if (rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH && 1739 nla_put_u8(msg, NL80211_ATTR_MAX_CSA_COUNTERS, 1740 rdev->wiphy.max_num_csa_counters)) 1741 goto nla_put_failure; 1742 1743 if (rdev->wiphy.regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 1744 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 1745 goto nla_put_failure; 1746 1747 if (nla_put(msg, NL80211_ATTR_EXT_FEATURES, 1748 sizeof(rdev->wiphy.ext_features), 1749 rdev->wiphy.ext_features)) 1750 goto nla_put_failure; 1751 1752 if (rdev->wiphy.bss_select_support) { 1753 struct nlattr *nested; 1754 u32 bss_select_support = rdev->wiphy.bss_select_support; 1755 1756 nested = nla_nest_start(msg, NL80211_ATTR_BSS_SELECT); 1757 if (!nested) 1758 goto nla_put_failure; 1759 1760 i = 0; 1761 while (bss_select_support) { 1762 if ((bss_select_support & 1) && 1763 nla_put_flag(msg, i)) 1764 goto nla_put_failure; 1765 i++; 1766 bss_select_support >>= 1; 1767 } 1768 nla_nest_end(msg, nested); 1769 } 1770 1771 state->split_start++; 1772 break; 1773 case 13: 1774 if (rdev->wiphy.num_iftype_ext_capab && 1775 rdev->wiphy.iftype_ext_capab) { 1776 struct nlattr *nested_ext_capab, *nested; 1777 1778 nested = nla_nest_start(msg, 1779 NL80211_ATTR_IFTYPE_EXT_CAPA); 1780 if (!nested) 1781 goto nla_put_failure; 1782 1783 for (i = state->capa_start; 1784 i < rdev->wiphy.num_iftype_ext_capab; i++) { 1785 const struct wiphy_iftype_ext_capab *capab; 1786 1787 capab = &rdev->wiphy.iftype_ext_capab[i]; 1788 1789 nested_ext_capab = nla_nest_start(msg, i); 1790 if (!nested_ext_capab || 1791 nla_put_u32(msg, NL80211_ATTR_IFTYPE, 1792 capab->iftype) || 1793 nla_put(msg, NL80211_ATTR_EXT_CAPA, 1794 capab->extended_capabilities_len, 1795 capab->extended_capabilities) || 1796 nla_put(msg, NL80211_ATTR_EXT_CAPA_MASK, 1797 capab->extended_capabilities_len, 1798 capab->extended_capabilities_mask)) 1799 goto nla_put_failure; 1800 1801 nla_nest_end(msg, nested_ext_capab); 1802 if (state->split) 1803 break; 1804 } 1805 nla_nest_end(msg, nested); 1806 if (i < rdev->wiphy.num_iftype_ext_capab) { 1807 state->capa_start = i + 1; 1808 break; 1809 } 1810 } 1811 1812 /* done */ 1813 state->split_start = 0; 1814 break; 1815 } 1816 finish: 1817 genlmsg_end(msg, hdr); 1818 return 0; 1819 1820 nla_put_failure: 1821 genlmsg_cancel(msg, hdr); 1822 return -EMSGSIZE; 1823 } 1824 1825 static int nl80211_dump_wiphy_parse(struct sk_buff *skb, 1826 struct netlink_callback *cb, 1827 struct nl80211_dump_wiphy_state *state) 1828 { 1829 struct nlattr **tb = nl80211_fam.attrbuf; 1830 int ret = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 1831 tb, nl80211_fam.maxattr, nl80211_policy); 1832 /* ignore parse errors for backward compatibility */ 1833 if (ret) 1834 return 0; 1835 1836 state->split = tb[NL80211_ATTR_SPLIT_WIPHY_DUMP]; 1837 if (tb[NL80211_ATTR_WIPHY]) 1838 state->filter_wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 1839 if (tb[NL80211_ATTR_WDEV]) 1840 state->filter_wiphy = nla_get_u64(tb[NL80211_ATTR_WDEV]) >> 32; 1841 if (tb[NL80211_ATTR_IFINDEX]) { 1842 struct net_device *netdev; 1843 struct cfg80211_registered_device *rdev; 1844 int ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 1845 1846 netdev = __dev_get_by_index(sock_net(skb->sk), ifidx); 1847 if (!netdev) 1848 return -ENODEV; 1849 if (netdev->ieee80211_ptr) { 1850 rdev = wiphy_to_rdev( 1851 netdev->ieee80211_ptr->wiphy); 1852 state->filter_wiphy = rdev->wiphy_idx; 1853 } 1854 } 1855 1856 return 0; 1857 } 1858 1859 static int nl80211_dump_wiphy(struct sk_buff *skb, struct netlink_callback *cb) 1860 { 1861 int idx = 0, ret; 1862 struct nl80211_dump_wiphy_state *state = (void *)cb->args[0]; 1863 struct cfg80211_registered_device *rdev; 1864 1865 rtnl_lock(); 1866 if (!state) { 1867 state = kzalloc(sizeof(*state), GFP_KERNEL); 1868 if (!state) { 1869 rtnl_unlock(); 1870 return -ENOMEM; 1871 } 1872 state->filter_wiphy = -1; 1873 ret = nl80211_dump_wiphy_parse(skb, cb, state); 1874 if (ret) { 1875 kfree(state); 1876 rtnl_unlock(); 1877 return ret; 1878 } 1879 cb->args[0] = (long)state; 1880 } 1881 1882 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 1883 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 1884 continue; 1885 if (++idx <= state->start) 1886 continue; 1887 if (state->filter_wiphy != -1 && 1888 state->filter_wiphy != rdev->wiphy_idx) 1889 continue; 1890 /* attempt to fit multiple wiphy data chunks into the skb */ 1891 do { 1892 ret = nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, 1893 skb, 1894 NETLINK_CB(cb->skb).portid, 1895 cb->nlh->nlmsg_seq, 1896 NLM_F_MULTI, state); 1897 if (ret < 0) { 1898 /* 1899 * If sending the wiphy data didn't fit (ENOBUFS 1900 * or EMSGSIZE returned), this SKB is still 1901 * empty (so it's not too big because another 1902 * wiphy dataset is already in the skb) and 1903 * we've not tried to adjust the dump allocation 1904 * yet ... then adjust the alloc size to be 1905 * bigger, and return 1 but with the empty skb. 1906 * This results in an empty message being RX'ed 1907 * in userspace, but that is ignored. 1908 * 1909 * We can then retry with the larger buffer. 1910 */ 1911 if ((ret == -ENOBUFS || ret == -EMSGSIZE) && 1912 !skb->len && !state->split && 1913 cb->min_dump_alloc < 4096) { 1914 cb->min_dump_alloc = 4096; 1915 state->split_start = 0; 1916 rtnl_unlock(); 1917 return 1; 1918 } 1919 idx--; 1920 break; 1921 } 1922 } while (state->split_start > 0); 1923 break; 1924 } 1925 rtnl_unlock(); 1926 1927 state->start = idx; 1928 1929 return skb->len; 1930 } 1931 1932 static int nl80211_dump_wiphy_done(struct netlink_callback *cb) 1933 { 1934 kfree((void *)cb->args[0]); 1935 return 0; 1936 } 1937 1938 static int nl80211_get_wiphy(struct sk_buff *skb, struct genl_info *info) 1939 { 1940 struct sk_buff *msg; 1941 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 1942 struct nl80211_dump_wiphy_state state = {}; 1943 1944 msg = nlmsg_new(4096, GFP_KERNEL); 1945 if (!msg) 1946 return -ENOMEM; 1947 1948 if (nl80211_send_wiphy(rdev, NL80211_CMD_NEW_WIPHY, msg, 1949 info->snd_portid, info->snd_seq, 0, 1950 &state) < 0) { 1951 nlmsg_free(msg); 1952 return -ENOBUFS; 1953 } 1954 1955 return genlmsg_reply(msg, info); 1956 } 1957 1958 static const struct nla_policy txq_params_policy[NL80211_TXQ_ATTR_MAX + 1] = { 1959 [NL80211_TXQ_ATTR_QUEUE] = { .type = NLA_U8 }, 1960 [NL80211_TXQ_ATTR_TXOP] = { .type = NLA_U16 }, 1961 [NL80211_TXQ_ATTR_CWMIN] = { .type = NLA_U16 }, 1962 [NL80211_TXQ_ATTR_CWMAX] = { .type = NLA_U16 }, 1963 [NL80211_TXQ_ATTR_AIFS] = { .type = NLA_U8 }, 1964 }; 1965 1966 static int parse_txq_params(struct nlattr *tb[], 1967 struct ieee80211_txq_params *txq_params) 1968 { 1969 if (!tb[NL80211_TXQ_ATTR_AC] || !tb[NL80211_TXQ_ATTR_TXOP] || 1970 !tb[NL80211_TXQ_ATTR_CWMIN] || !tb[NL80211_TXQ_ATTR_CWMAX] || 1971 !tb[NL80211_TXQ_ATTR_AIFS]) 1972 return -EINVAL; 1973 1974 txq_params->ac = nla_get_u8(tb[NL80211_TXQ_ATTR_AC]); 1975 txq_params->txop = nla_get_u16(tb[NL80211_TXQ_ATTR_TXOP]); 1976 txq_params->cwmin = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMIN]); 1977 txq_params->cwmax = nla_get_u16(tb[NL80211_TXQ_ATTR_CWMAX]); 1978 txq_params->aifs = nla_get_u8(tb[NL80211_TXQ_ATTR_AIFS]); 1979 1980 if (txq_params->ac >= NL80211_NUM_ACS) 1981 return -EINVAL; 1982 1983 return 0; 1984 } 1985 1986 static bool nl80211_can_set_dev_channel(struct wireless_dev *wdev) 1987 { 1988 /* 1989 * You can only set the channel explicitly for WDS interfaces, 1990 * all others have their channel managed via their respective 1991 * "establish a connection" command (connect, join, ...) 1992 * 1993 * For AP/GO and mesh mode, the channel can be set with the 1994 * channel userspace API, but is only stored and passed to the 1995 * low-level driver when the AP starts or the mesh is joined. 1996 * This is for backward compatibility, userspace can also give 1997 * the channel in the start-ap or join-mesh commands instead. 1998 * 1999 * Monitors are special as they are normally slaved to 2000 * whatever else is going on, so they have their own special 2001 * operation to set the monitor channel if possible. 2002 */ 2003 return !wdev || 2004 wdev->iftype == NL80211_IFTYPE_AP || 2005 wdev->iftype == NL80211_IFTYPE_MESH_POINT || 2006 wdev->iftype == NL80211_IFTYPE_MONITOR || 2007 wdev->iftype == NL80211_IFTYPE_P2P_GO; 2008 } 2009 2010 static int nl80211_parse_chandef(struct cfg80211_registered_device *rdev, 2011 struct genl_info *info, 2012 struct cfg80211_chan_def *chandef) 2013 { 2014 u32 control_freq; 2015 2016 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 2017 return -EINVAL; 2018 2019 control_freq = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_FREQ]); 2020 2021 chandef->chan = ieee80211_get_channel(&rdev->wiphy, control_freq); 2022 chandef->width = NL80211_CHAN_WIDTH_20_NOHT; 2023 chandef->center_freq1 = control_freq; 2024 chandef->center_freq2 = 0; 2025 2026 /* Primary channel not allowed */ 2027 if (!chandef->chan || chandef->chan->flags & IEEE80211_CHAN_DISABLED) 2028 return -EINVAL; 2029 2030 if (info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2031 enum nl80211_channel_type chantype; 2032 2033 chantype = nla_get_u32( 2034 info->attrs[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2035 2036 switch (chantype) { 2037 case NL80211_CHAN_NO_HT: 2038 case NL80211_CHAN_HT20: 2039 case NL80211_CHAN_HT40PLUS: 2040 case NL80211_CHAN_HT40MINUS: 2041 cfg80211_chandef_create(chandef, chandef->chan, 2042 chantype); 2043 break; 2044 default: 2045 return -EINVAL; 2046 } 2047 } else if (info->attrs[NL80211_ATTR_CHANNEL_WIDTH]) { 2048 chandef->width = 2049 nla_get_u32(info->attrs[NL80211_ATTR_CHANNEL_WIDTH]); 2050 if (info->attrs[NL80211_ATTR_CENTER_FREQ1]) 2051 chandef->center_freq1 = 2052 nla_get_u32( 2053 info->attrs[NL80211_ATTR_CENTER_FREQ1]); 2054 if (info->attrs[NL80211_ATTR_CENTER_FREQ2]) 2055 chandef->center_freq2 = 2056 nla_get_u32( 2057 info->attrs[NL80211_ATTR_CENTER_FREQ2]); 2058 } 2059 2060 if (!cfg80211_chandef_valid(chandef)) 2061 return -EINVAL; 2062 2063 if (!cfg80211_chandef_usable(&rdev->wiphy, chandef, 2064 IEEE80211_CHAN_DISABLED)) 2065 return -EINVAL; 2066 2067 if ((chandef->width == NL80211_CHAN_WIDTH_5 || 2068 chandef->width == NL80211_CHAN_WIDTH_10) && 2069 !(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_5_10_MHZ)) 2070 return -EINVAL; 2071 2072 return 0; 2073 } 2074 2075 static int __nl80211_set_channel(struct cfg80211_registered_device *rdev, 2076 struct net_device *dev, 2077 struct genl_info *info) 2078 { 2079 struct cfg80211_chan_def chandef; 2080 int result; 2081 enum nl80211_iftype iftype = NL80211_IFTYPE_MONITOR; 2082 struct wireless_dev *wdev = NULL; 2083 2084 if (dev) 2085 wdev = dev->ieee80211_ptr; 2086 if (!nl80211_can_set_dev_channel(wdev)) 2087 return -EOPNOTSUPP; 2088 if (wdev) 2089 iftype = wdev->iftype; 2090 2091 result = nl80211_parse_chandef(rdev, info, &chandef); 2092 if (result) 2093 return result; 2094 2095 switch (iftype) { 2096 case NL80211_IFTYPE_AP: 2097 case NL80211_IFTYPE_P2P_GO: 2098 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 2099 iftype)) { 2100 result = -EINVAL; 2101 break; 2102 } 2103 if (wdev->beacon_interval) { 2104 if (!dev || !rdev->ops->set_ap_chanwidth || 2105 !(rdev->wiphy.features & 2106 NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE)) { 2107 result = -EBUSY; 2108 break; 2109 } 2110 2111 /* Only allow dynamic channel width changes */ 2112 if (chandef.chan != wdev->preset_chandef.chan) { 2113 result = -EBUSY; 2114 break; 2115 } 2116 result = rdev_set_ap_chanwidth(rdev, dev, &chandef); 2117 if (result) 2118 break; 2119 } 2120 wdev->preset_chandef = chandef; 2121 result = 0; 2122 break; 2123 case NL80211_IFTYPE_MESH_POINT: 2124 result = cfg80211_set_mesh_channel(rdev, wdev, &chandef); 2125 break; 2126 case NL80211_IFTYPE_MONITOR: 2127 result = cfg80211_set_monitor_channel(rdev, &chandef); 2128 break; 2129 default: 2130 result = -EINVAL; 2131 } 2132 2133 return result; 2134 } 2135 2136 static int nl80211_set_channel(struct sk_buff *skb, struct genl_info *info) 2137 { 2138 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2139 struct net_device *netdev = info->user_ptr[1]; 2140 2141 return __nl80211_set_channel(rdev, netdev, info); 2142 } 2143 2144 static int nl80211_set_wds_peer(struct sk_buff *skb, struct genl_info *info) 2145 { 2146 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2147 struct net_device *dev = info->user_ptr[1]; 2148 struct wireless_dev *wdev = dev->ieee80211_ptr; 2149 const u8 *bssid; 2150 2151 if (!info->attrs[NL80211_ATTR_MAC]) 2152 return -EINVAL; 2153 2154 if (netif_running(dev)) 2155 return -EBUSY; 2156 2157 if (!rdev->ops->set_wds_peer) 2158 return -EOPNOTSUPP; 2159 2160 if (wdev->iftype != NL80211_IFTYPE_WDS) 2161 return -EOPNOTSUPP; 2162 2163 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 2164 return rdev_set_wds_peer(rdev, dev, bssid); 2165 } 2166 2167 static int nl80211_set_wiphy(struct sk_buff *skb, struct genl_info *info) 2168 { 2169 struct cfg80211_registered_device *rdev; 2170 struct net_device *netdev = NULL; 2171 struct wireless_dev *wdev; 2172 int result = 0, rem_txq_params = 0; 2173 struct nlattr *nl_txq_params; 2174 u32 changed; 2175 u8 retry_short = 0, retry_long = 0; 2176 u32 frag_threshold = 0, rts_threshold = 0; 2177 u8 coverage_class = 0; 2178 2179 ASSERT_RTNL(); 2180 2181 /* 2182 * Try to find the wiphy and netdev. Normally this 2183 * function shouldn't need the netdev, but this is 2184 * done for backward compatibility -- previously 2185 * setting the channel was done per wiphy, but now 2186 * it is per netdev. Previous userland like hostapd 2187 * also passed a netdev to set_wiphy, so that it is 2188 * possible to let that go to the right netdev! 2189 */ 2190 2191 if (info->attrs[NL80211_ATTR_IFINDEX]) { 2192 int ifindex = nla_get_u32(info->attrs[NL80211_ATTR_IFINDEX]); 2193 2194 netdev = __dev_get_by_index(genl_info_net(info), ifindex); 2195 if (netdev && netdev->ieee80211_ptr) 2196 rdev = wiphy_to_rdev(netdev->ieee80211_ptr->wiphy); 2197 else 2198 netdev = NULL; 2199 } 2200 2201 if (!netdev) { 2202 rdev = __cfg80211_rdev_from_attrs(genl_info_net(info), 2203 info->attrs); 2204 if (IS_ERR(rdev)) 2205 return PTR_ERR(rdev); 2206 wdev = NULL; 2207 netdev = NULL; 2208 result = 0; 2209 } else 2210 wdev = netdev->ieee80211_ptr; 2211 2212 /* 2213 * end workaround code, by now the rdev is available 2214 * and locked, and wdev may or may not be NULL. 2215 */ 2216 2217 if (info->attrs[NL80211_ATTR_WIPHY_NAME]) 2218 result = cfg80211_dev_rename( 2219 rdev, nla_data(info->attrs[NL80211_ATTR_WIPHY_NAME])); 2220 2221 if (result) 2222 return result; 2223 2224 if (info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS]) { 2225 struct ieee80211_txq_params txq_params; 2226 struct nlattr *tb[NL80211_TXQ_ATTR_MAX + 1]; 2227 2228 if (!rdev->ops->set_txq_params) 2229 return -EOPNOTSUPP; 2230 2231 if (!netdev) 2232 return -EINVAL; 2233 2234 if (netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 2235 netdev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 2236 return -EINVAL; 2237 2238 if (!netif_running(netdev)) 2239 return -ENETDOWN; 2240 2241 nla_for_each_nested(nl_txq_params, 2242 info->attrs[NL80211_ATTR_WIPHY_TXQ_PARAMS], 2243 rem_txq_params) { 2244 result = nla_parse(tb, NL80211_TXQ_ATTR_MAX, 2245 nla_data(nl_txq_params), 2246 nla_len(nl_txq_params), 2247 txq_params_policy); 2248 if (result) 2249 return result; 2250 result = parse_txq_params(tb, &txq_params); 2251 if (result) 2252 return result; 2253 2254 result = rdev_set_txq_params(rdev, netdev, 2255 &txq_params); 2256 if (result) 2257 return result; 2258 } 2259 } 2260 2261 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 2262 result = __nl80211_set_channel( 2263 rdev, 2264 nl80211_can_set_dev_channel(wdev) ? netdev : NULL, 2265 info); 2266 if (result) 2267 return result; 2268 } 2269 2270 if (info->attrs[NL80211_ATTR_WIPHY_TX_POWER_SETTING]) { 2271 struct wireless_dev *txp_wdev = wdev; 2272 enum nl80211_tx_power_setting type; 2273 int idx, mbm = 0; 2274 2275 if (!(rdev->wiphy.features & NL80211_FEATURE_VIF_TXPOWER)) 2276 txp_wdev = NULL; 2277 2278 if (!rdev->ops->set_tx_power) 2279 return -EOPNOTSUPP; 2280 2281 idx = NL80211_ATTR_WIPHY_TX_POWER_SETTING; 2282 type = nla_get_u32(info->attrs[idx]); 2283 2284 if (!info->attrs[NL80211_ATTR_WIPHY_TX_POWER_LEVEL] && 2285 (type != NL80211_TX_POWER_AUTOMATIC)) 2286 return -EINVAL; 2287 2288 if (type != NL80211_TX_POWER_AUTOMATIC) { 2289 idx = NL80211_ATTR_WIPHY_TX_POWER_LEVEL; 2290 mbm = nla_get_u32(info->attrs[idx]); 2291 } 2292 2293 result = rdev_set_tx_power(rdev, txp_wdev, type, mbm); 2294 if (result) 2295 return result; 2296 } 2297 2298 if (info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX] && 2299 info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]) { 2300 u32 tx_ant, rx_ant; 2301 2302 if ((!rdev->wiphy.available_antennas_tx && 2303 !rdev->wiphy.available_antennas_rx) || 2304 !rdev->ops->set_antenna) 2305 return -EOPNOTSUPP; 2306 2307 tx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_TX]); 2308 rx_ant = nla_get_u32(info->attrs[NL80211_ATTR_WIPHY_ANTENNA_RX]); 2309 2310 /* reject antenna configurations which don't match the 2311 * available antenna masks, except for the "all" mask */ 2312 if ((~tx_ant && (tx_ant & ~rdev->wiphy.available_antennas_tx)) || 2313 (~rx_ant && (rx_ant & ~rdev->wiphy.available_antennas_rx))) 2314 return -EINVAL; 2315 2316 tx_ant = tx_ant & rdev->wiphy.available_antennas_tx; 2317 rx_ant = rx_ant & rdev->wiphy.available_antennas_rx; 2318 2319 result = rdev_set_antenna(rdev, tx_ant, rx_ant); 2320 if (result) 2321 return result; 2322 } 2323 2324 changed = 0; 2325 2326 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]) { 2327 retry_short = nla_get_u8( 2328 info->attrs[NL80211_ATTR_WIPHY_RETRY_SHORT]); 2329 if (retry_short == 0) 2330 return -EINVAL; 2331 2332 changed |= WIPHY_PARAM_RETRY_SHORT; 2333 } 2334 2335 if (info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]) { 2336 retry_long = nla_get_u8( 2337 info->attrs[NL80211_ATTR_WIPHY_RETRY_LONG]); 2338 if (retry_long == 0) 2339 return -EINVAL; 2340 2341 changed |= WIPHY_PARAM_RETRY_LONG; 2342 } 2343 2344 if (info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]) { 2345 frag_threshold = nla_get_u32( 2346 info->attrs[NL80211_ATTR_WIPHY_FRAG_THRESHOLD]); 2347 if (frag_threshold < 256) 2348 return -EINVAL; 2349 2350 if (frag_threshold != (u32) -1) { 2351 /* 2352 * Fragments (apart from the last one) are required to 2353 * have even length. Make the fragmentation code 2354 * simpler by stripping LSB should someone try to use 2355 * odd threshold value. 2356 */ 2357 frag_threshold &= ~0x1; 2358 } 2359 changed |= WIPHY_PARAM_FRAG_THRESHOLD; 2360 } 2361 2362 if (info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]) { 2363 rts_threshold = nla_get_u32( 2364 info->attrs[NL80211_ATTR_WIPHY_RTS_THRESHOLD]); 2365 changed |= WIPHY_PARAM_RTS_THRESHOLD; 2366 } 2367 2368 if (info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]) { 2369 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) 2370 return -EINVAL; 2371 2372 coverage_class = nla_get_u8( 2373 info->attrs[NL80211_ATTR_WIPHY_COVERAGE_CLASS]); 2374 changed |= WIPHY_PARAM_COVERAGE_CLASS; 2375 } 2376 2377 if (info->attrs[NL80211_ATTR_WIPHY_DYN_ACK]) { 2378 if (!(rdev->wiphy.features & NL80211_FEATURE_ACKTO_ESTIMATION)) 2379 return -EOPNOTSUPP; 2380 2381 changed |= WIPHY_PARAM_DYN_ACK; 2382 } 2383 2384 if (changed) { 2385 u8 old_retry_short, old_retry_long; 2386 u32 old_frag_threshold, old_rts_threshold; 2387 u8 old_coverage_class; 2388 2389 if (!rdev->ops->set_wiphy_params) 2390 return -EOPNOTSUPP; 2391 2392 old_retry_short = rdev->wiphy.retry_short; 2393 old_retry_long = rdev->wiphy.retry_long; 2394 old_frag_threshold = rdev->wiphy.frag_threshold; 2395 old_rts_threshold = rdev->wiphy.rts_threshold; 2396 old_coverage_class = rdev->wiphy.coverage_class; 2397 2398 if (changed & WIPHY_PARAM_RETRY_SHORT) 2399 rdev->wiphy.retry_short = retry_short; 2400 if (changed & WIPHY_PARAM_RETRY_LONG) 2401 rdev->wiphy.retry_long = retry_long; 2402 if (changed & WIPHY_PARAM_FRAG_THRESHOLD) 2403 rdev->wiphy.frag_threshold = frag_threshold; 2404 if (changed & WIPHY_PARAM_RTS_THRESHOLD) 2405 rdev->wiphy.rts_threshold = rts_threshold; 2406 if (changed & WIPHY_PARAM_COVERAGE_CLASS) 2407 rdev->wiphy.coverage_class = coverage_class; 2408 2409 result = rdev_set_wiphy_params(rdev, changed); 2410 if (result) { 2411 rdev->wiphy.retry_short = old_retry_short; 2412 rdev->wiphy.retry_long = old_retry_long; 2413 rdev->wiphy.frag_threshold = old_frag_threshold; 2414 rdev->wiphy.rts_threshold = old_rts_threshold; 2415 rdev->wiphy.coverage_class = old_coverage_class; 2416 return result; 2417 } 2418 } 2419 return 0; 2420 } 2421 2422 static inline u64 wdev_id(struct wireless_dev *wdev) 2423 { 2424 return (u64)wdev->identifier | 2425 ((u64)wiphy_to_rdev(wdev->wiphy)->wiphy_idx << 32); 2426 } 2427 2428 static int nl80211_send_chandef(struct sk_buff *msg, 2429 const struct cfg80211_chan_def *chandef) 2430 { 2431 if (WARN_ON(!cfg80211_chandef_valid(chandef))) 2432 return -EINVAL; 2433 2434 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, 2435 chandef->chan->center_freq)) 2436 return -ENOBUFS; 2437 switch (chandef->width) { 2438 case NL80211_CHAN_WIDTH_20_NOHT: 2439 case NL80211_CHAN_WIDTH_20: 2440 case NL80211_CHAN_WIDTH_40: 2441 if (nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 2442 cfg80211_get_chandef_type(chandef))) 2443 return -ENOBUFS; 2444 break; 2445 default: 2446 break; 2447 } 2448 if (nla_put_u32(msg, NL80211_ATTR_CHANNEL_WIDTH, chandef->width)) 2449 return -ENOBUFS; 2450 if (nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ1, chandef->center_freq1)) 2451 return -ENOBUFS; 2452 if (chandef->center_freq2 && 2453 nla_put_u32(msg, NL80211_ATTR_CENTER_FREQ2, chandef->center_freq2)) 2454 return -ENOBUFS; 2455 return 0; 2456 } 2457 2458 static int nl80211_send_iface(struct sk_buff *msg, u32 portid, u32 seq, int flags, 2459 struct cfg80211_registered_device *rdev, 2460 struct wireless_dev *wdev, bool removal) 2461 { 2462 struct net_device *dev = wdev->netdev; 2463 u8 cmd = NL80211_CMD_NEW_INTERFACE; 2464 void *hdr; 2465 2466 if (removal) 2467 cmd = NL80211_CMD_DEL_INTERFACE; 2468 2469 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 2470 if (!hdr) 2471 return -1; 2472 2473 if (dev && 2474 (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 2475 nla_put_string(msg, NL80211_ATTR_IFNAME, dev->name))) 2476 goto nla_put_failure; 2477 2478 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 2479 nla_put_u32(msg, NL80211_ATTR_IFTYPE, wdev->iftype) || 2480 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 2481 NL80211_ATTR_PAD) || 2482 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, wdev_address(wdev)) || 2483 nla_put_u32(msg, NL80211_ATTR_GENERATION, 2484 rdev->devlist_generation ^ 2485 (cfg80211_rdev_list_generation << 2))) 2486 goto nla_put_failure; 2487 2488 if (rdev->ops->get_channel) { 2489 int ret; 2490 struct cfg80211_chan_def chandef; 2491 2492 ret = rdev_get_channel(rdev, wdev, &chandef); 2493 if (ret == 0) { 2494 if (nl80211_send_chandef(msg, &chandef)) 2495 goto nla_put_failure; 2496 } 2497 } 2498 2499 if (rdev->ops->get_tx_power) { 2500 int dbm, ret; 2501 2502 ret = rdev_get_tx_power(rdev, wdev, &dbm); 2503 if (ret == 0 && 2504 nla_put_u32(msg, NL80211_ATTR_WIPHY_TX_POWER_LEVEL, 2505 DBM_TO_MBM(dbm))) 2506 goto nla_put_failure; 2507 } 2508 2509 if (wdev->ssid_len) { 2510 if (nla_put(msg, NL80211_ATTR_SSID, wdev->ssid_len, wdev->ssid)) 2511 goto nla_put_failure; 2512 } 2513 2514 genlmsg_end(msg, hdr); 2515 return 0; 2516 2517 nla_put_failure: 2518 genlmsg_cancel(msg, hdr); 2519 return -EMSGSIZE; 2520 } 2521 2522 static int nl80211_dump_interface(struct sk_buff *skb, struct netlink_callback *cb) 2523 { 2524 int wp_idx = 0; 2525 int if_idx = 0; 2526 int wp_start = cb->args[0]; 2527 int if_start = cb->args[1]; 2528 struct cfg80211_registered_device *rdev; 2529 struct wireless_dev *wdev; 2530 2531 rtnl_lock(); 2532 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 2533 if (!net_eq(wiphy_net(&rdev->wiphy), sock_net(skb->sk))) 2534 continue; 2535 if (wp_idx < wp_start) { 2536 wp_idx++; 2537 continue; 2538 } 2539 if_idx = 0; 2540 2541 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 2542 if (if_idx < if_start) { 2543 if_idx++; 2544 continue; 2545 } 2546 if (nl80211_send_iface(skb, NETLINK_CB(cb->skb).portid, 2547 cb->nlh->nlmsg_seq, NLM_F_MULTI, 2548 rdev, wdev, false) < 0) { 2549 goto out; 2550 } 2551 if_idx++; 2552 } 2553 2554 wp_idx++; 2555 } 2556 out: 2557 rtnl_unlock(); 2558 2559 cb->args[0] = wp_idx; 2560 cb->args[1] = if_idx; 2561 2562 return skb->len; 2563 } 2564 2565 static int nl80211_get_interface(struct sk_buff *skb, struct genl_info *info) 2566 { 2567 struct sk_buff *msg; 2568 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2569 struct wireless_dev *wdev = info->user_ptr[1]; 2570 2571 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2572 if (!msg) 2573 return -ENOMEM; 2574 2575 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2576 rdev, wdev, false) < 0) { 2577 nlmsg_free(msg); 2578 return -ENOBUFS; 2579 } 2580 2581 return genlmsg_reply(msg, info); 2582 } 2583 2584 static const struct nla_policy mntr_flags_policy[NL80211_MNTR_FLAG_MAX + 1] = { 2585 [NL80211_MNTR_FLAG_FCSFAIL] = { .type = NLA_FLAG }, 2586 [NL80211_MNTR_FLAG_PLCPFAIL] = { .type = NLA_FLAG }, 2587 [NL80211_MNTR_FLAG_CONTROL] = { .type = NLA_FLAG }, 2588 [NL80211_MNTR_FLAG_OTHER_BSS] = { .type = NLA_FLAG }, 2589 [NL80211_MNTR_FLAG_COOK_FRAMES] = { .type = NLA_FLAG }, 2590 [NL80211_MNTR_FLAG_ACTIVE] = { .type = NLA_FLAG }, 2591 }; 2592 2593 static int parse_monitor_flags(struct nlattr *nla, u32 *mntrflags) 2594 { 2595 struct nlattr *flags[NL80211_MNTR_FLAG_MAX + 1]; 2596 int flag; 2597 2598 *mntrflags = 0; 2599 2600 if (!nla) 2601 return -EINVAL; 2602 2603 if (nla_parse_nested(flags, NL80211_MNTR_FLAG_MAX, 2604 nla, mntr_flags_policy)) 2605 return -EINVAL; 2606 2607 for (flag = 1; flag <= NL80211_MNTR_FLAG_MAX; flag++) 2608 if (flags[flag]) 2609 *mntrflags |= (1<<flag); 2610 2611 return 0; 2612 } 2613 2614 static int nl80211_valid_4addr(struct cfg80211_registered_device *rdev, 2615 struct net_device *netdev, u8 use_4addr, 2616 enum nl80211_iftype iftype) 2617 { 2618 if (!use_4addr) { 2619 if (netdev && (netdev->priv_flags & IFF_BRIDGE_PORT)) 2620 return -EBUSY; 2621 return 0; 2622 } 2623 2624 switch (iftype) { 2625 case NL80211_IFTYPE_AP_VLAN: 2626 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_AP) 2627 return 0; 2628 break; 2629 case NL80211_IFTYPE_STATION: 2630 if (rdev->wiphy.flags & WIPHY_FLAG_4ADDR_STATION) 2631 return 0; 2632 break; 2633 default: 2634 break; 2635 } 2636 2637 return -EOPNOTSUPP; 2638 } 2639 2640 static int nl80211_set_interface(struct sk_buff *skb, struct genl_info *info) 2641 { 2642 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2643 struct vif_params params; 2644 int err; 2645 enum nl80211_iftype otype, ntype; 2646 struct net_device *dev = info->user_ptr[1]; 2647 u32 _flags, *flags = NULL; 2648 bool change = false; 2649 2650 memset(¶ms, 0, sizeof(params)); 2651 2652 otype = ntype = dev->ieee80211_ptr->iftype; 2653 2654 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2655 ntype = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2656 if (otype != ntype) 2657 change = true; 2658 if (ntype > NL80211_IFTYPE_MAX) 2659 return -EINVAL; 2660 } 2661 2662 if (info->attrs[NL80211_ATTR_MESH_ID]) { 2663 struct wireless_dev *wdev = dev->ieee80211_ptr; 2664 2665 if (ntype != NL80211_IFTYPE_MESH_POINT) 2666 return -EINVAL; 2667 if (netif_running(dev)) 2668 return -EBUSY; 2669 2670 wdev_lock(wdev); 2671 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2672 IEEE80211_MAX_MESH_ID_LEN); 2673 wdev->mesh_id_up_len = 2674 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2675 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2676 wdev->mesh_id_up_len); 2677 wdev_unlock(wdev); 2678 } 2679 2680 if (info->attrs[NL80211_ATTR_4ADDR]) { 2681 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2682 change = true; 2683 err = nl80211_valid_4addr(rdev, dev, params.use_4addr, ntype); 2684 if (err) 2685 return err; 2686 } else { 2687 params.use_4addr = -1; 2688 } 2689 2690 if (info->attrs[NL80211_ATTR_MNTR_FLAGS]) { 2691 if (ntype != NL80211_IFTYPE_MONITOR) 2692 return -EINVAL; 2693 err = parse_monitor_flags(info->attrs[NL80211_ATTR_MNTR_FLAGS], 2694 &_flags); 2695 if (err) 2696 return err; 2697 2698 flags = &_flags; 2699 change = true; 2700 } 2701 2702 if (info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]) { 2703 const u8 *mumimo_groups; 2704 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2705 2706 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2707 return -EOPNOTSUPP; 2708 2709 mumimo_groups = 2710 nla_data(info->attrs[NL80211_ATTR_MU_MIMO_GROUP_DATA]); 2711 2712 /* bits 0 and 63 are reserved and must be zero */ 2713 if ((mumimo_groups[0] & BIT(7)) || 2714 (mumimo_groups[VHT_MUMIMO_GROUPS_DATA_LEN - 1] & BIT(0))) 2715 return -EINVAL; 2716 2717 memcpy(params.vht_mumimo_groups, mumimo_groups, 2718 VHT_MUMIMO_GROUPS_DATA_LEN); 2719 change = true; 2720 } 2721 2722 if (info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR]) { 2723 u32 cap_flag = NL80211_EXT_FEATURE_MU_MIMO_AIR_SNIFFER; 2724 2725 if (!wiphy_ext_feature_isset(&rdev->wiphy, cap_flag)) 2726 return -EOPNOTSUPP; 2727 2728 nla_memcpy(params.macaddr, 2729 info->attrs[NL80211_ATTR_MU_MIMO_FOLLOW_MAC_ADDR], 2730 ETH_ALEN); 2731 change = true; 2732 } 2733 2734 if (flags && (*flags & MONITOR_FLAG_ACTIVE) && 2735 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2736 return -EOPNOTSUPP; 2737 2738 if (change) 2739 err = cfg80211_change_iface(rdev, dev, ntype, flags, ¶ms); 2740 else 2741 err = 0; 2742 2743 if (!err && params.use_4addr != -1) 2744 dev->ieee80211_ptr->use_4addr = params.use_4addr; 2745 2746 return err; 2747 } 2748 2749 static int nl80211_new_interface(struct sk_buff *skb, struct genl_info *info) 2750 { 2751 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2752 struct vif_params params; 2753 struct wireless_dev *wdev; 2754 struct sk_buff *msg, *event; 2755 int err; 2756 enum nl80211_iftype type = NL80211_IFTYPE_UNSPECIFIED; 2757 u32 flags; 2758 2759 /* to avoid failing a new interface creation due to pending removal */ 2760 cfg80211_destroy_ifaces(rdev); 2761 2762 memset(¶ms, 0, sizeof(params)); 2763 2764 if (!info->attrs[NL80211_ATTR_IFNAME]) 2765 return -EINVAL; 2766 2767 if (info->attrs[NL80211_ATTR_IFTYPE]) { 2768 type = nla_get_u32(info->attrs[NL80211_ATTR_IFTYPE]); 2769 if (type > NL80211_IFTYPE_MAX) 2770 return -EINVAL; 2771 } 2772 2773 if (!rdev->ops->add_virtual_intf || 2774 !(rdev->wiphy.interface_modes & (1 << type))) 2775 return -EOPNOTSUPP; 2776 2777 if ((type == NL80211_IFTYPE_P2P_DEVICE || 2778 rdev->wiphy.features & NL80211_FEATURE_MAC_ON_CREATE) && 2779 info->attrs[NL80211_ATTR_MAC]) { 2780 nla_memcpy(params.macaddr, info->attrs[NL80211_ATTR_MAC], 2781 ETH_ALEN); 2782 if (!is_valid_ether_addr(params.macaddr)) 2783 return -EADDRNOTAVAIL; 2784 } 2785 2786 if (info->attrs[NL80211_ATTR_4ADDR]) { 2787 params.use_4addr = !!nla_get_u8(info->attrs[NL80211_ATTR_4ADDR]); 2788 err = nl80211_valid_4addr(rdev, NULL, params.use_4addr, type); 2789 if (err) 2790 return err; 2791 } 2792 2793 err = parse_monitor_flags(type == NL80211_IFTYPE_MONITOR ? 2794 info->attrs[NL80211_ATTR_MNTR_FLAGS] : NULL, 2795 &flags); 2796 2797 if (!err && (flags & MONITOR_FLAG_ACTIVE) && 2798 !(rdev->wiphy.features & NL80211_FEATURE_ACTIVE_MONITOR)) 2799 return -EOPNOTSUPP; 2800 2801 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2802 if (!msg) 2803 return -ENOMEM; 2804 2805 wdev = rdev_add_virtual_intf(rdev, 2806 nla_data(info->attrs[NL80211_ATTR_IFNAME]), 2807 NET_NAME_USER, type, err ? NULL : &flags, 2808 ¶ms); 2809 if (WARN_ON(!wdev)) { 2810 nlmsg_free(msg); 2811 return -EPROTO; 2812 } else if (IS_ERR(wdev)) { 2813 nlmsg_free(msg); 2814 return PTR_ERR(wdev); 2815 } 2816 2817 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 2818 wdev->owner_nlportid = info->snd_portid; 2819 2820 switch (type) { 2821 case NL80211_IFTYPE_MESH_POINT: 2822 if (!info->attrs[NL80211_ATTR_MESH_ID]) 2823 break; 2824 wdev_lock(wdev); 2825 BUILD_BUG_ON(IEEE80211_MAX_SSID_LEN != 2826 IEEE80211_MAX_MESH_ID_LEN); 2827 wdev->mesh_id_up_len = 2828 nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 2829 memcpy(wdev->ssid, nla_data(info->attrs[NL80211_ATTR_MESH_ID]), 2830 wdev->mesh_id_up_len); 2831 wdev_unlock(wdev); 2832 break; 2833 case NL80211_IFTYPE_P2P_DEVICE: 2834 /* 2835 * P2P Device doesn't have a netdev, so doesn't go 2836 * through the netdev notifier and must be added here 2837 */ 2838 mutex_init(&wdev->mtx); 2839 INIT_LIST_HEAD(&wdev->event_list); 2840 spin_lock_init(&wdev->event_lock); 2841 INIT_LIST_HEAD(&wdev->mgmt_registrations); 2842 spin_lock_init(&wdev->mgmt_registrations_lock); 2843 2844 wdev->identifier = ++rdev->wdev_id; 2845 list_add_rcu(&wdev->list, &rdev->wiphy.wdev_list); 2846 rdev->devlist_generation++; 2847 break; 2848 default: 2849 break; 2850 } 2851 2852 if (nl80211_send_iface(msg, info->snd_portid, info->snd_seq, 0, 2853 rdev, wdev, false) < 0) { 2854 nlmsg_free(msg); 2855 return -ENOBUFS; 2856 } 2857 2858 event = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2859 if (event) { 2860 if (nl80211_send_iface(event, 0, 0, 0, 2861 rdev, wdev, false) < 0) { 2862 nlmsg_free(event); 2863 goto out; 2864 } 2865 2866 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2867 event, 0, NL80211_MCGRP_CONFIG, 2868 GFP_KERNEL); 2869 } 2870 2871 out: 2872 return genlmsg_reply(msg, info); 2873 } 2874 2875 static int nl80211_del_interface(struct sk_buff *skb, struct genl_info *info) 2876 { 2877 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2878 struct wireless_dev *wdev = info->user_ptr[1]; 2879 struct sk_buff *msg; 2880 int status; 2881 2882 if (!rdev->ops->del_virtual_intf) 2883 return -EOPNOTSUPP; 2884 2885 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 2886 if (msg && nl80211_send_iface(msg, 0, 0, 0, rdev, wdev, true) < 0) { 2887 nlmsg_free(msg); 2888 msg = NULL; 2889 } 2890 2891 /* 2892 * If we remove a wireless device without a netdev then clear 2893 * user_ptr[1] so that nl80211_post_doit won't dereference it 2894 * to check if it needs to do dev_put(). Otherwise it crashes 2895 * since the wdev has been freed, unlike with a netdev where 2896 * we need the dev_put() for the netdev to really be freed. 2897 */ 2898 if (!wdev->netdev) 2899 info->user_ptr[1] = NULL; 2900 2901 status = rdev_del_virtual_intf(rdev, wdev); 2902 if (status >= 0 && msg) 2903 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), 2904 msg, 0, NL80211_MCGRP_CONFIG, 2905 GFP_KERNEL); 2906 else 2907 nlmsg_free(msg); 2908 2909 return status; 2910 } 2911 2912 static int nl80211_set_noack_map(struct sk_buff *skb, struct genl_info *info) 2913 { 2914 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2915 struct net_device *dev = info->user_ptr[1]; 2916 u16 noack_map; 2917 2918 if (!info->attrs[NL80211_ATTR_NOACK_MAP]) 2919 return -EINVAL; 2920 2921 if (!rdev->ops->set_noack_map) 2922 return -EOPNOTSUPP; 2923 2924 noack_map = nla_get_u16(info->attrs[NL80211_ATTR_NOACK_MAP]); 2925 2926 return rdev_set_noack_map(rdev, dev, noack_map); 2927 } 2928 2929 struct get_key_cookie { 2930 struct sk_buff *msg; 2931 int error; 2932 int idx; 2933 }; 2934 2935 static void get_key_callback(void *c, struct key_params *params) 2936 { 2937 struct nlattr *key; 2938 struct get_key_cookie *cookie = c; 2939 2940 if ((params->key && 2941 nla_put(cookie->msg, NL80211_ATTR_KEY_DATA, 2942 params->key_len, params->key)) || 2943 (params->seq && 2944 nla_put(cookie->msg, NL80211_ATTR_KEY_SEQ, 2945 params->seq_len, params->seq)) || 2946 (params->cipher && 2947 nla_put_u32(cookie->msg, NL80211_ATTR_KEY_CIPHER, 2948 params->cipher))) 2949 goto nla_put_failure; 2950 2951 key = nla_nest_start(cookie->msg, NL80211_ATTR_KEY); 2952 if (!key) 2953 goto nla_put_failure; 2954 2955 if ((params->key && 2956 nla_put(cookie->msg, NL80211_KEY_DATA, 2957 params->key_len, params->key)) || 2958 (params->seq && 2959 nla_put(cookie->msg, NL80211_KEY_SEQ, 2960 params->seq_len, params->seq)) || 2961 (params->cipher && 2962 nla_put_u32(cookie->msg, NL80211_KEY_CIPHER, 2963 params->cipher))) 2964 goto nla_put_failure; 2965 2966 if (nla_put_u8(cookie->msg, NL80211_ATTR_KEY_IDX, cookie->idx)) 2967 goto nla_put_failure; 2968 2969 nla_nest_end(cookie->msg, key); 2970 2971 return; 2972 nla_put_failure: 2973 cookie->error = 1; 2974 } 2975 2976 static int nl80211_get_key(struct sk_buff *skb, struct genl_info *info) 2977 { 2978 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 2979 int err; 2980 struct net_device *dev = info->user_ptr[1]; 2981 u8 key_idx = 0; 2982 const u8 *mac_addr = NULL; 2983 bool pairwise; 2984 struct get_key_cookie cookie = { 2985 .error = 0, 2986 }; 2987 void *hdr; 2988 struct sk_buff *msg; 2989 2990 if (info->attrs[NL80211_ATTR_KEY_IDX]) 2991 key_idx = nla_get_u8(info->attrs[NL80211_ATTR_KEY_IDX]); 2992 2993 if (key_idx > 5) 2994 return -EINVAL; 2995 2996 if (info->attrs[NL80211_ATTR_MAC]) 2997 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 2998 2999 pairwise = !!mac_addr; 3000 if (info->attrs[NL80211_ATTR_KEY_TYPE]) { 3001 u32 kt = nla_get_u32(info->attrs[NL80211_ATTR_KEY_TYPE]); 3002 3003 if (kt >= NUM_NL80211_KEYTYPES) 3004 return -EINVAL; 3005 if (kt != NL80211_KEYTYPE_GROUP && 3006 kt != NL80211_KEYTYPE_PAIRWISE) 3007 return -EINVAL; 3008 pairwise = kt == NL80211_KEYTYPE_PAIRWISE; 3009 } 3010 3011 if (!rdev->ops->get_key) 3012 return -EOPNOTSUPP; 3013 3014 if (!pairwise && mac_addr && !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3015 return -ENOENT; 3016 3017 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 3018 if (!msg) 3019 return -ENOMEM; 3020 3021 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 3022 NL80211_CMD_NEW_KEY); 3023 if (!hdr) 3024 goto nla_put_failure; 3025 3026 cookie.msg = msg; 3027 cookie.idx = key_idx; 3028 3029 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3030 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_idx)) 3031 goto nla_put_failure; 3032 if (mac_addr && 3033 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr)) 3034 goto nla_put_failure; 3035 3036 err = rdev_get_key(rdev, dev, key_idx, pairwise, mac_addr, &cookie, 3037 get_key_callback); 3038 3039 if (err) 3040 goto free_msg; 3041 3042 if (cookie.error) 3043 goto nla_put_failure; 3044 3045 genlmsg_end(msg, hdr); 3046 return genlmsg_reply(msg, info); 3047 3048 nla_put_failure: 3049 err = -ENOBUFS; 3050 free_msg: 3051 nlmsg_free(msg); 3052 return err; 3053 } 3054 3055 static int nl80211_set_key(struct sk_buff *skb, struct genl_info *info) 3056 { 3057 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3058 struct key_parse key; 3059 int err; 3060 struct net_device *dev = info->user_ptr[1]; 3061 3062 err = nl80211_parse_key(info, &key); 3063 if (err) 3064 return err; 3065 3066 if (key.idx < 0) 3067 return -EINVAL; 3068 3069 /* only support setting default key */ 3070 if (!key.def && !key.defmgmt) 3071 return -EINVAL; 3072 3073 wdev_lock(dev->ieee80211_ptr); 3074 3075 if (key.def) { 3076 if (!rdev->ops->set_default_key) { 3077 err = -EOPNOTSUPP; 3078 goto out; 3079 } 3080 3081 err = nl80211_key_allowed(dev->ieee80211_ptr); 3082 if (err) 3083 goto out; 3084 3085 err = rdev_set_default_key(rdev, dev, key.idx, 3086 key.def_uni, key.def_multi); 3087 3088 if (err) 3089 goto out; 3090 3091 #ifdef CONFIG_CFG80211_WEXT 3092 dev->ieee80211_ptr->wext.default_key = key.idx; 3093 #endif 3094 } else { 3095 if (key.def_uni || !key.def_multi) { 3096 err = -EINVAL; 3097 goto out; 3098 } 3099 3100 if (!rdev->ops->set_default_mgmt_key) { 3101 err = -EOPNOTSUPP; 3102 goto out; 3103 } 3104 3105 err = nl80211_key_allowed(dev->ieee80211_ptr); 3106 if (err) 3107 goto out; 3108 3109 err = rdev_set_default_mgmt_key(rdev, dev, key.idx); 3110 if (err) 3111 goto out; 3112 3113 #ifdef CONFIG_CFG80211_WEXT 3114 dev->ieee80211_ptr->wext.default_mgmt_key = key.idx; 3115 #endif 3116 } 3117 3118 out: 3119 wdev_unlock(dev->ieee80211_ptr); 3120 3121 return err; 3122 } 3123 3124 static int nl80211_new_key(struct sk_buff *skb, struct genl_info *info) 3125 { 3126 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3127 int err; 3128 struct net_device *dev = info->user_ptr[1]; 3129 struct key_parse key; 3130 const u8 *mac_addr = NULL; 3131 3132 err = nl80211_parse_key(info, &key); 3133 if (err) 3134 return err; 3135 3136 if (!key.p.key) 3137 return -EINVAL; 3138 3139 if (info->attrs[NL80211_ATTR_MAC]) 3140 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3141 3142 if (key.type == -1) { 3143 if (mac_addr) 3144 key.type = NL80211_KEYTYPE_PAIRWISE; 3145 else 3146 key.type = NL80211_KEYTYPE_GROUP; 3147 } 3148 3149 /* for now */ 3150 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3151 key.type != NL80211_KEYTYPE_GROUP) 3152 return -EINVAL; 3153 3154 if (!rdev->ops->add_key) 3155 return -EOPNOTSUPP; 3156 3157 if (cfg80211_validate_key_settings(rdev, &key.p, key.idx, 3158 key.type == NL80211_KEYTYPE_PAIRWISE, 3159 mac_addr)) 3160 return -EINVAL; 3161 3162 wdev_lock(dev->ieee80211_ptr); 3163 err = nl80211_key_allowed(dev->ieee80211_ptr); 3164 if (!err) 3165 err = rdev_add_key(rdev, dev, key.idx, 3166 key.type == NL80211_KEYTYPE_PAIRWISE, 3167 mac_addr, &key.p); 3168 wdev_unlock(dev->ieee80211_ptr); 3169 3170 return err; 3171 } 3172 3173 static int nl80211_del_key(struct sk_buff *skb, struct genl_info *info) 3174 { 3175 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3176 int err; 3177 struct net_device *dev = info->user_ptr[1]; 3178 u8 *mac_addr = NULL; 3179 struct key_parse key; 3180 3181 err = nl80211_parse_key(info, &key); 3182 if (err) 3183 return err; 3184 3185 if (info->attrs[NL80211_ATTR_MAC]) 3186 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 3187 3188 if (key.type == -1) { 3189 if (mac_addr) 3190 key.type = NL80211_KEYTYPE_PAIRWISE; 3191 else 3192 key.type = NL80211_KEYTYPE_GROUP; 3193 } 3194 3195 /* for now */ 3196 if (key.type != NL80211_KEYTYPE_PAIRWISE && 3197 key.type != NL80211_KEYTYPE_GROUP) 3198 return -EINVAL; 3199 3200 if (!rdev->ops->del_key) 3201 return -EOPNOTSUPP; 3202 3203 wdev_lock(dev->ieee80211_ptr); 3204 err = nl80211_key_allowed(dev->ieee80211_ptr); 3205 3206 if (key.type == NL80211_KEYTYPE_GROUP && mac_addr && 3207 !(rdev->wiphy.flags & WIPHY_FLAG_IBSS_RSN)) 3208 err = -ENOENT; 3209 3210 if (!err) 3211 err = rdev_del_key(rdev, dev, key.idx, 3212 key.type == NL80211_KEYTYPE_PAIRWISE, 3213 mac_addr); 3214 3215 #ifdef CONFIG_CFG80211_WEXT 3216 if (!err) { 3217 if (key.idx == dev->ieee80211_ptr->wext.default_key) 3218 dev->ieee80211_ptr->wext.default_key = -1; 3219 else if (key.idx == dev->ieee80211_ptr->wext.default_mgmt_key) 3220 dev->ieee80211_ptr->wext.default_mgmt_key = -1; 3221 } 3222 #endif 3223 wdev_unlock(dev->ieee80211_ptr); 3224 3225 return err; 3226 } 3227 3228 /* This function returns an error or the number of nested attributes */ 3229 static int validate_acl_mac_addrs(struct nlattr *nl_attr) 3230 { 3231 struct nlattr *attr; 3232 int n_entries = 0, tmp; 3233 3234 nla_for_each_nested(attr, nl_attr, tmp) { 3235 if (nla_len(attr) != ETH_ALEN) 3236 return -EINVAL; 3237 3238 n_entries++; 3239 } 3240 3241 return n_entries; 3242 } 3243 3244 /* 3245 * This function parses ACL information and allocates memory for ACL data. 3246 * On successful return, the calling function is responsible to free the 3247 * ACL buffer returned by this function. 3248 */ 3249 static struct cfg80211_acl_data *parse_acl_data(struct wiphy *wiphy, 3250 struct genl_info *info) 3251 { 3252 enum nl80211_acl_policy acl_policy; 3253 struct nlattr *attr; 3254 struct cfg80211_acl_data *acl; 3255 int i = 0, n_entries, tmp; 3256 3257 if (!wiphy->max_acl_mac_addrs) 3258 return ERR_PTR(-EOPNOTSUPP); 3259 3260 if (!info->attrs[NL80211_ATTR_ACL_POLICY]) 3261 return ERR_PTR(-EINVAL); 3262 3263 acl_policy = nla_get_u32(info->attrs[NL80211_ATTR_ACL_POLICY]); 3264 if (acl_policy != NL80211_ACL_POLICY_ACCEPT_UNLESS_LISTED && 3265 acl_policy != NL80211_ACL_POLICY_DENY_UNLESS_LISTED) 3266 return ERR_PTR(-EINVAL); 3267 3268 if (!info->attrs[NL80211_ATTR_MAC_ADDRS]) 3269 return ERR_PTR(-EINVAL); 3270 3271 n_entries = validate_acl_mac_addrs(info->attrs[NL80211_ATTR_MAC_ADDRS]); 3272 if (n_entries < 0) 3273 return ERR_PTR(n_entries); 3274 3275 if (n_entries > wiphy->max_acl_mac_addrs) 3276 return ERR_PTR(-ENOTSUPP); 3277 3278 acl = kzalloc(sizeof(*acl) + (sizeof(struct mac_address) * n_entries), 3279 GFP_KERNEL); 3280 if (!acl) 3281 return ERR_PTR(-ENOMEM); 3282 3283 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_MAC_ADDRS], tmp) { 3284 memcpy(acl->mac_addrs[i].addr, nla_data(attr), ETH_ALEN); 3285 i++; 3286 } 3287 3288 acl->n_acl_entries = n_entries; 3289 acl->acl_policy = acl_policy; 3290 3291 return acl; 3292 } 3293 3294 static int nl80211_set_mac_acl(struct sk_buff *skb, struct genl_info *info) 3295 { 3296 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3297 struct net_device *dev = info->user_ptr[1]; 3298 struct cfg80211_acl_data *acl; 3299 int err; 3300 3301 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3302 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3303 return -EOPNOTSUPP; 3304 3305 if (!dev->ieee80211_ptr->beacon_interval) 3306 return -EINVAL; 3307 3308 acl = parse_acl_data(&rdev->wiphy, info); 3309 if (IS_ERR(acl)) 3310 return PTR_ERR(acl); 3311 3312 err = rdev_set_mac_acl(rdev, dev, acl); 3313 3314 kfree(acl); 3315 3316 return err; 3317 } 3318 3319 static int nl80211_parse_beacon(struct nlattr *attrs[], 3320 struct cfg80211_beacon_data *bcn) 3321 { 3322 bool haveinfo = false; 3323 3324 if (!is_valid_ie_attr(attrs[NL80211_ATTR_BEACON_TAIL]) || 3325 !is_valid_ie_attr(attrs[NL80211_ATTR_IE]) || 3326 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_PROBE_RESP]) || 3327 !is_valid_ie_attr(attrs[NL80211_ATTR_IE_ASSOC_RESP])) 3328 return -EINVAL; 3329 3330 memset(bcn, 0, sizeof(*bcn)); 3331 3332 if (attrs[NL80211_ATTR_BEACON_HEAD]) { 3333 bcn->head = nla_data(attrs[NL80211_ATTR_BEACON_HEAD]); 3334 bcn->head_len = nla_len(attrs[NL80211_ATTR_BEACON_HEAD]); 3335 if (!bcn->head_len) 3336 return -EINVAL; 3337 haveinfo = true; 3338 } 3339 3340 if (attrs[NL80211_ATTR_BEACON_TAIL]) { 3341 bcn->tail = nla_data(attrs[NL80211_ATTR_BEACON_TAIL]); 3342 bcn->tail_len = nla_len(attrs[NL80211_ATTR_BEACON_TAIL]); 3343 haveinfo = true; 3344 } 3345 3346 if (!haveinfo) 3347 return -EINVAL; 3348 3349 if (attrs[NL80211_ATTR_IE]) { 3350 bcn->beacon_ies = nla_data(attrs[NL80211_ATTR_IE]); 3351 bcn->beacon_ies_len = nla_len(attrs[NL80211_ATTR_IE]); 3352 } 3353 3354 if (attrs[NL80211_ATTR_IE_PROBE_RESP]) { 3355 bcn->proberesp_ies = 3356 nla_data(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3357 bcn->proberesp_ies_len = 3358 nla_len(attrs[NL80211_ATTR_IE_PROBE_RESP]); 3359 } 3360 3361 if (attrs[NL80211_ATTR_IE_ASSOC_RESP]) { 3362 bcn->assocresp_ies = 3363 nla_data(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3364 bcn->assocresp_ies_len = 3365 nla_len(attrs[NL80211_ATTR_IE_ASSOC_RESP]); 3366 } 3367 3368 if (attrs[NL80211_ATTR_PROBE_RESP]) { 3369 bcn->probe_resp = nla_data(attrs[NL80211_ATTR_PROBE_RESP]); 3370 bcn->probe_resp_len = nla_len(attrs[NL80211_ATTR_PROBE_RESP]); 3371 } 3372 3373 return 0; 3374 } 3375 3376 static bool nl80211_get_ap_channel(struct cfg80211_registered_device *rdev, 3377 struct cfg80211_ap_settings *params) 3378 { 3379 struct wireless_dev *wdev; 3380 bool ret = false; 3381 3382 list_for_each_entry(wdev, &rdev->wiphy.wdev_list, list) { 3383 if (wdev->iftype != NL80211_IFTYPE_AP && 3384 wdev->iftype != NL80211_IFTYPE_P2P_GO) 3385 continue; 3386 3387 if (!wdev->preset_chandef.chan) 3388 continue; 3389 3390 params->chandef = wdev->preset_chandef; 3391 ret = true; 3392 break; 3393 } 3394 3395 return ret; 3396 } 3397 3398 static bool nl80211_valid_auth_type(struct cfg80211_registered_device *rdev, 3399 enum nl80211_auth_type auth_type, 3400 enum nl80211_commands cmd) 3401 { 3402 if (auth_type > NL80211_AUTHTYPE_MAX) 3403 return false; 3404 3405 switch (cmd) { 3406 case NL80211_CMD_AUTHENTICATE: 3407 if (!(rdev->wiphy.features & NL80211_FEATURE_SAE) && 3408 auth_type == NL80211_AUTHTYPE_SAE) 3409 return false; 3410 return true; 3411 case NL80211_CMD_CONNECT: 3412 case NL80211_CMD_START_AP: 3413 /* SAE not supported yet */ 3414 if (auth_type == NL80211_AUTHTYPE_SAE) 3415 return false; 3416 return true; 3417 default: 3418 return false; 3419 } 3420 } 3421 3422 static int nl80211_start_ap(struct sk_buff *skb, struct genl_info *info) 3423 { 3424 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3425 struct net_device *dev = info->user_ptr[1]; 3426 struct wireless_dev *wdev = dev->ieee80211_ptr; 3427 struct cfg80211_ap_settings params; 3428 int err; 3429 3430 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3431 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3432 return -EOPNOTSUPP; 3433 3434 if (!rdev->ops->start_ap) 3435 return -EOPNOTSUPP; 3436 3437 if (wdev->beacon_interval) 3438 return -EALREADY; 3439 3440 memset(¶ms, 0, sizeof(params)); 3441 3442 /* these are required for START_AP */ 3443 if (!info->attrs[NL80211_ATTR_BEACON_INTERVAL] || 3444 !info->attrs[NL80211_ATTR_DTIM_PERIOD] || 3445 !info->attrs[NL80211_ATTR_BEACON_HEAD]) 3446 return -EINVAL; 3447 3448 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon); 3449 if (err) 3450 return err; 3451 3452 params.beacon_interval = 3453 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 3454 params.dtim_period = 3455 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 3456 3457 err = cfg80211_validate_beacon_int(rdev, params.beacon_interval); 3458 if (err) 3459 return err; 3460 3461 /* 3462 * In theory, some of these attributes should be required here 3463 * but since they were not used when the command was originally 3464 * added, keep them optional for old user space programs to let 3465 * them continue to work with drivers that do not need the 3466 * additional information -- drivers must check! 3467 */ 3468 if (info->attrs[NL80211_ATTR_SSID]) { 3469 params.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 3470 params.ssid_len = 3471 nla_len(info->attrs[NL80211_ATTR_SSID]); 3472 if (params.ssid_len == 0 || 3473 params.ssid_len > IEEE80211_MAX_SSID_LEN) 3474 return -EINVAL; 3475 } 3476 3477 if (info->attrs[NL80211_ATTR_HIDDEN_SSID]) { 3478 params.hidden_ssid = nla_get_u32( 3479 info->attrs[NL80211_ATTR_HIDDEN_SSID]); 3480 if (params.hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE && 3481 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_LEN && 3482 params.hidden_ssid != NL80211_HIDDEN_SSID_ZERO_CONTENTS) 3483 return -EINVAL; 3484 } 3485 3486 params.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 3487 3488 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 3489 params.auth_type = nla_get_u32( 3490 info->attrs[NL80211_ATTR_AUTH_TYPE]); 3491 if (!nl80211_valid_auth_type(rdev, params.auth_type, 3492 NL80211_CMD_START_AP)) 3493 return -EINVAL; 3494 } else 3495 params.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 3496 3497 err = nl80211_crypto_settings(rdev, info, ¶ms.crypto, 3498 NL80211_MAX_NR_CIPHER_SUITES); 3499 if (err) 3500 return err; 3501 3502 if (info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]) { 3503 if (!(rdev->wiphy.features & NL80211_FEATURE_INACTIVITY_TIMER)) 3504 return -EOPNOTSUPP; 3505 params.inactivity_timeout = nla_get_u16( 3506 info->attrs[NL80211_ATTR_INACTIVITY_TIMEOUT]); 3507 } 3508 3509 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 3510 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3511 return -EINVAL; 3512 params.p2p_ctwindow = 3513 nla_get_u8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 3514 if (params.p2p_ctwindow > 127) 3515 return -EINVAL; 3516 if (params.p2p_ctwindow != 0 && 3517 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 3518 return -EINVAL; 3519 } 3520 3521 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 3522 u8 tmp; 3523 3524 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3525 return -EINVAL; 3526 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 3527 if (tmp > 1) 3528 return -EINVAL; 3529 params.p2p_opp_ps = tmp; 3530 if (params.p2p_opp_ps != 0 && 3531 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 3532 return -EINVAL; 3533 } 3534 3535 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 3536 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 3537 if (err) 3538 return err; 3539 } else if (wdev->preset_chandef.chan) { 3540 params.chandef = wdev->preset_chandef; 3541 } else if (!nl80211_get_ap_channel(rdev, ¶ms)) 3542 return -EINVAL; 3543 3544 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 3545 wdev->iftype)) 3546 return -EINVAL; 3547 3548 if (info->attrs[NL80211_ATTR_SMPS_MODE]) { 3549 params.smps_mode = 3550 nla_get_u8(info->attrs[NL80211_ATTR_SMPS_MODE]); 3551 switch (params.smps_mode) { 3552 case NL80211_SMPS_OFF: 3553 break; 3554 case NL80211_SMPS_STATIC: 3555 if (!(rdev->wiphy.features & 3556 NL80211_FEATURE_STATIC_SMPS)) 3557 return -EINVAL; 3558 break; 3559 case NL80211_SMPS_DYNAMIC: 3560 if (!(rdev->wiphy.features & 3561 NL80211_FEATURE_DYNAMIC_SMPS)) 3562 return -EINVAL; 3563 break; 3564 default: 3565 return -EINVAL; 3566 } 3567 } else { 3568 params.smps_mode = NL80211_SMPS_OFF; 3569 } 3570 3571 params.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 3572 if (params.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) 3573 return -EOPNOTSUPP; 3574 3575 if (info->attrs[NL80211_ATTR_ACL_POLICY]) { 3576 params.acl = parse_acl_data(&rdev->wiphy, info); 3577 if (IS_ERR(params.acl)) 3578 return PTR_ERR(params.acl); 3579 } 3580 3581 wdev_lock(wdev); 3582 err = rdev_start_ap(rdev, dev, ¶ms); 3583 if (!err) { 3584 wdev->preset_chandef = params.chandef; 3585 wdev->beacon_interval = params.beacon_interval; 3586 wdev->chandef = params.chandef; 3587 wdev->ssid_len = params.ssid_len; 3588 memcpy(wdev->ssid, params.ssid, wdev->ssid_len); 3589 } 3590 wdev_unlock(wdev); 3591 3592 kfree(params.acl); 3593 3594 return err; 3595 } 3596 3597 static int nl80211_set_beacon(struct sk_buff *skb, struct genl_info *info) 3598 { 3599 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3600 struct net_device *dev = info->user_ptr[1]; 3601 struct wireless_dev *wdev = dev->ieee80211_ptr; 3602 struct cfg80211_beacon_data params; 3603 int err; 3604 3605 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 3606 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 3607 return -EOPNOTSUPP; 3608 3609 if (!rdev->ops->change_beacon) 3610 return -EOPNOTSUPP; 3611 3612 if (!wdev->beacon_interval) 3613 return -EINVAL; 3614 3615 err = nl80211_parse_beacon(info->attrs, ¶ms); 3616 if (err) 3617 return err; 3618 3619 wdev_lock(wdev); 3620 err = rdev_change_beacon(rdev, dev, ¶ms); 3621 wdev_unlock(wdev); 3622 3623 return err; 3624 } 3625 3626 static int nl80211_stop_ap(struct sk_buff *skb, struct genl_info *info) 3627 { 3628 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 3629 struct net_device *dev = info->user_ptr[1]; 3630 3631 return cfg80211_stop_ap(rdev, dev, false); 3632 } 3633 3634 static const struct nla_policy sta_flags_policy[NL80211_STA_FLAG_MAX + 1] = { 3635 [NL80211_STA_FLAG_AUTHORIZED] = { .type = NLA_FLAG }, 3636 [NL80211_STA_FLAG_SHORT_PREAMBLE] = { .type = NLA_FLAG }, 3637 [NL80211_STA_FLAG_WME] = { .type = NLA_FLAG }, 3638 [NL80211_STA_FLAG_MFP] = { .type = NLA_FLAG }, 3639 [NL80211_STA_FLAG_AUTHENTICATED] = { .type = NLA_FLAG }, 3640 [NL80211_STA_FLAG_TDLS_PEER] = { .type = NLA_FLAG }, 3641 }; 3642 3643 static int parse_station_flags(struct genl_info *info, 3644 enum nl80211_iftype iftype, 3645 struct station_parameters *params) 3646 { 3647 struct nlattr *flags[NL80211_STA_FLAG_MAX + 1]; 3648 struct nlattr *nla; 3649 int flag; 3650 3651 /* 3652 * Try parsing the new attribute first so userspace 3653 * can specify both for older kernels. 3654 */ 3655 nla = info->attrs[NL80211_ATTR_STA_FLAGS2]; 3656 if (nla) { 3657 struct nl80211_sta_flag_update *sta_flags; 3658 3659 sta_flags = nla_data(nla); 3660 params->sta_flags_mask = sta_flags->mask; 3661 params->sta_flags_set = sta_flags->set; 3662 params->sta_flags_set &= params->sta_flags_mask; 3663 if ((params->sta_flags_mask | 3664 params->sta_flags_set) & BIT(__NL80211_STA_FLAG_INVALID)) 3665 return -EINVAL; 3666 return 0; 3667 } 3668 3669 /* if present, parse the old attribute */ 3670 3671 nla = info->attrs[NL80211_ATTR_STA_FLAGS]; 3672 if (!nla) 3673 return 0; 3674 3675 if (nla_parse_nested(flags, NL80211_STA_FLAG_MAX, 3676 nla, sta_flags_policy)) 3677 return -EINVAL; 3678 3679 /* 3680 * Only allow certain flags for interface types so that 3681 * other attributes are silently ignored. Remember that 3682 * this is backward compatibility code with old userspace 3683 * and shouldn't be hit in other cases anyway. 3684 */ 3685 switch (iftype) { 3686 case NL80211_IFTYPE_AP: 3687 case NL80211_IFTYPE_AP_VLAN: 3688 case NL80211_IFTYPE_P2P_GO: 3689 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3690 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 3691 BIT(NL80211_STA_FLAG_WME) | 3692 BIT(NL80211_STA_FLAG_MFP); 3693 break; 3694 case NL80211_IFTYPE_P2P_CLIENT: 3695 case NL80211_IFTYPE_STATION: 3696 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHORIZED) | 3697 BIT(NL80211_STA_FLAG_TDLS_PEER); 3698 break; 3699 case NL80211_IFTYPE_MESH_POINT: 3700 params->sta_flags_mask = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 3701 BIT(NL80211_STA_FLAG_MFP) | 3702 BIT(NL80211_STA_FLAG_AUTHORIZED); 3703 default: 3704 return -EINVAL; 3705 } 3706 3707 for (flag = 1; flag <= NL80211_STA_FLAG_MAX; flag++) { 3708 if (flags[flag]) { 3709 params->sta_flags_set |= (1<<flag); 3710 3711 /* no longer support new API additions in old API */ 3712 if (flag > NL80211_STA_FLAG_MAX_OLD_API) 3713 return -EINVAL; 3714 } 3715 } 3716 3717 return 0; 3718 } 3719 3720 static bool nl80211_put_sta_rate(struct sk_buff *msg, struct rate_info *info, 3721 int attr) 3722 { 3723 struct nlattr *rate; 3724 u32 bitrate; 3725 u16 bitrate_compat; 3726 enum nl80211_attrs rate_flg; 3727 3728 rate = nla_nest_start(msg, attr); 3729 if (!rate) 3730 return false; 3731 3732 /* cfg80211_calculate_bitrate will return 0 for mcs >= 32 */ 3733 bitrate = cfg80211_calculate_bitrate(info); 3734 /* report 16-bit bitrate only if we can */ 3735 bitrate_compat = bitrate < (1UL << 16) ? bitrate : 0; 3736 if (bitrate > 0 && 3737 nla_put_u32(msg, NL80211_RATE_INFO_BITRATE32, bitrate)) 3738 return false; 3739 if (bitrate_compat > 0 && 3740 nla_put_u16(msg, NL80211_RATE_INFO_BITRATE, bitrate_compat)) 3741 return false; 3742 3743 switch (info->bw) { 3744 case RATE_INFO_BW_5: 3745 rate_flg = NL80211_RATE_INFO_5_MHZ_WIDTH; 3746 break; 3747 case RATE_INFO_BW_10: 3748 rate_flg = NL80211_RATE_INFO_10_MHZ_WIDTH; 3749 break; 3750 default: 3751 WARN_ON(1); 3752 /* fall through */ 3753 case RATE_INFO_BW_20: 3754 rate_flg = 0; 3755 break; 3756 case RATE_INFO_BW_40: 3757 rate_flg = NL80211_RATE_INFO_40_MHZ_WIDTH; 3758 break; 3759 case RATE_INFO_BW_80: 3760 rate_flg = NL80211_RATE_INFO_80_MHZ_WIDTH; 3761 break; 3762 case RATE_INFO_BW_160: 3763 rate_flg = NL80211_RATE_INFO_160_MHZ_WIDTH; 3764 break; 3765 } 3766 3767 if (rate_flg && nla_put_flag(msg, rate_flg)) 3768 return false; 3769 3770 if (info->flags & RATE_INFO_FLAGS_MCS) { 3771 if (nla_put_u8(msg, NL80211_RATE_INFO_MCS, info->mcs)) 3772 return false; 3773 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3774 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3775 return false; 3776 } else if (info->flags & RATE_INFO_FLAGS_VHT_MCS) { 3777 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_MCS, info->mcs)) 3778 return false; 3779 if (nla_put_u8(msg, NL80211_RATE_INFO_VHT_NSS, info->nss)) 3780 return false; 3781 if (info->flags & RATE_INFO_FLAGS_SHORT_GI && 3782 nla_put_flag(msg, NL80211_RATE_INFO_SHORT_GI)) 3783 return false; 3784 } 3785 3786 nla_nest_end(msg, rate); 3787 return true; 3788 } 3789 3790 static bool nl80211_put_signal(struct sk_buff *msg, u8 mask, s8 *signal, 3791 int id) 3792 { 3793 void *attr; 3794 int i = 0; 3795 3796 if (!mask) 3797 return true; 3798 3799 attr = nla_nest_start(msg, id); 3800 if (!attr) 3801 return false; 3802 3803 for (i = 0; i < IEEE80211_MAX_CHAINS; i++) { 3804 if (!(mask & BIT(i))) 3805 continue; 3806 3807 if (nla_put_u8(msg, i, signal[i])) 3808 return false; 3809 } 3810 3811 nla_nest_end(msg, attr); 3812 3813 return true; 3814 } 3815 3816 static int nl80211_send_station(struct sk_buff *msg, u32 cmd, u32 portid, 3817 u32 seq, int flags, 3818 struct cfg80211_registered_device *rdev, 3819 struct net_device *dev, 3820 const u8 *mac_addr, struct station_info *sinfo) 3821 { 3822 void *hdr; 3823 struct nlattr *sinfoattr, *bss_param; 3824 3825 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 3826 if (!hdr) 3827 return -1; 3828 3829 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 3830 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 3831 nla_put_u32(msg, NL80211_ATTR_GENERATION, sinfo->generation)) 3832 goto nla_put_failure; 3833 3834 sinfoattr = nla_nest_start(msg, NL80211_ATTR_STA_INFO); 3835 if (!sinfoattr) 3836 goto nla_put_failure; 3837 3838 #define PUT_SINFO(attr, memb, type) do { \ 3839 BUILD_BUG_ON(sizeof(type) == sizeof(u64)); \ 3840 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 3841 nla_put_ ## type(msg, NL80211_STA_INFO_ ## attr, \ 3842 sinfo->memb)) \ 3843 goto nla_put_failure; \ 3844 } while (0) 3845 #define PUT_SINFO_U64(attr, memb) do { \ 3846 if (sinfo->filled & (1ULL << NL80211_STA_INFO_ ## attr) && \ 3847 nla_put_u64_64bit(msg, NL80211_STA_INFO_ ## attr, \ 3848 sinfo->memb, NL80211_STA_INFO_PAD)) \ 3849 goto nla_put_failure; \ 3850 } while (0) 3851 3852 PUT_SINFO(CONNECTED_TIME, connected_time, u32); 3853 PUT_SINFO(INACTIVE_TIME, inactive_time, u32); 3854 3855 if (sinfo->filled & (BIT(NL80211_STA_INFO_RX_BYTES) | 3856 BIT(NL80211_STA_INFO_RX_BYTES64)) && 3857 nla_put_u32(msg, NL80211_STA_INFO_RX_BYTES, 3858 (u32)sinfo->rx_bytes)) 3859 goto nla_put_failure; 3860 3861 if (sinfo->filled & (BIT(NL80211_STA_INFO_TX_BYTES) | 3862 BIT(NL80211_STA_INFO_TX_BYTES64)) && 3863 nla_put_u32(msg, NL80211_STA_INFO_TX_BYTES, 3864 (u32)sinfo->tx_bytes)) 3865 goto nla_put_failure; 3866 3867 PUT_SINFO_U64(RX_BYTES64, rx_bytes); 3868 PUT_SINFO_U64(TX_BYTES64, tx_bytes); 3869 PUT_SINFO(LLID, llid, u16); 3870 PUT_SINFO(PLID, plid, u16); 3871 PUT_SINFO(PLINK_STATE, plink_state, u8); 3872 PUT_SINFO_U64(RX_DURATION, rx_duration); 3873 3874 switch (rdev->wiphy.signal_type) { 3875 case CFG80211_SIGNAL_TYPE_MBM: 3876 PUT_SINFO(SIGNAL, signal, u8); 3877 PUT_SINFO(SIGNAL_AVG, signal_avg, u8); 3878 break; 3879 default: 3880 break; 3881 } 3882 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL)) { 3883 if (!nl80211_put_signal(msg, sinfo->chains, 3884 sinfo->chain_signal, 3885 NL80211_STA_INFO_CHAIN_SIGNAL)) 3886 goto nla_put_failure; 3887 } 3888 if (sinfo->filled & BIT(NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) { 3889 if (!nl80211_put_signal(msg, sinfo->chains, 3890 sinfo->chain_signal_avg, 3891 NL80211_STA_INFO_CHAIN_SIGNAL_AVG)) 3892 goto nla_put_failure; 3893 } 3894 if (sinfo->filled & BIT(NL80211_STA_INFO_TX_BITRATE)) { 3895 if (!nl80211_put_sta_rate(msg, &sinfo->txrate, 3896 NL80211_STA_INFO_TX_BITRATE)) 3897 goto nla_put_failure; 3898 } 3899 if (sinfo->filled & BIT(NL80211_STA_INFO_RX_BITRATE)) { 3900 if (!nl80211_put_sta_rate(msg, &sinfo->rxrate, 3901 NL80211_STA_INFO_RX_BITRATE)) 3902 goto nla_put_failure; 3903 } 3904 3905 PUT_SINFO(RX_PACKETS, rx_packets, u32); 3906 PUT_SINFO(TX_PACKETS, tx_packets, u32); 3907 PUT_SINFO(TX_RETRIES, tx_retries, u32); 3908 PUT_SINFO(TX_FAILED, tx_failed, u32); 3909 PUT_SINFO(EXPECTED_THROUGHPUT, expected_throughput, u32); 3910 PUT_SINFO(BEACON_LOSS, beacon_loss_count, u32); 3911 PUT_SINFO(LOCAL_PM, local_pm, u32); 3912 PUT_SINFO(PEER_PM, peer_pm, u32); 3913 PUT_SINFO(NONPEER_PM, nonpeer_pm, u32); 3914 3915 if (sinfo->filled & BIT(NL80211_STA_INFO_BSS_PARAM)) { 3916 bss_param = nla_nest_start(msg, NL80211_STA_INFO_BSS_PARAM); 3917 if (!bss_param) 3918 goto nla_put_failure; 3919 3920 if (((sinfo->bss_param.flags & BSS_PARAM_FLAGS_CTS_PROT) && 3921 nla_put_flag(msg, NL80211_STA_BSS_PARAM_CTS_PROT)) || 3922 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_PREAMBLE) && 3923 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_PREAMBLE)) || 3924 ((sinfo->bss_param.flags & BSS_PARAM_FLAGS_SHORT_SLOT_TIME) && 3925 nla_put_flag(msg, NL80211_STA_BSS_PARAM_SHORT_SLOT_TIME)) || 3926 nla_put_u8(msg, NL80211_STA_BSS_PARAM_DTIM_PERIOD, 3927 sinfo->bss_param.dtim_period) || 3928 nla_put_u16(msg, NL80211_STA_BSS_PARAM_BEACON_INTERVAL, 3929 sinfo->bss_param.beacon_interval)) 3930 goto nla_put_failure; 3931 3932 nla_nest_end(msg, bss_param); 3933 } 3934 if ((sinfo->filled & BIT(NL80211_STA_INFO_STA_FLAGS)) && 3935 nla_put(msg, NL80211_STA_INFO_STA_FLAGS, 3936 sizeof(struct nl80211_sta_flag_update), 3937 &sinfo->sta_flags)) 3938 goto nla_put_failure; 3939 3940 PUT_SINFO_U64(T_OFFSET, t_offset); 3941 PUT_SINFO_U64(RX_DROP_MISC, rx_dropped_misc); 3942 PUT_SINFO_U64(BEACON_RX, rx_beacon); 3943 PUT_SINFO(BEACON_SIGNAL_AVG, rx_beacon_signal_avg, u8); 3944 3945 #undef PUT_SINFO 3946 #undef PUT_SINFO_U64 3947 3948 if (sinfo->filled & BIT(NL80211_STA_INFO_TID_STATS)) { 3949 struct nlattr *tidsattr; 3950 int tid; 3951 3952 tidsattr = nla_nest_start(msg, NL80211_STA_INFO_TID_STATS); 3953 if (!tidsattr) 3954 goto nla_put_failure; 3955 3956 for (tid = 0; tid < IEEE80211_NUM_TIDS + 1; tid++) { 3957 struct cfg80211_tid_stats *tidstats; 3958 struct nlattr *tidattr; 3959 3960 tidstats = &sinfo->pertid[tid]; 3961 3962 if (!tidstats->filled) 3963 continue; 3964 3965 tidattr = nla_nest_start(msg, tid + 1); 3966 if (!tidattr) 3967 goto nla_put_failure; 3968 3969 #define PUT_TIDVAL_U64(attr, memb) do { \ 3970 if (tidstats->filled & BIT(NL80211_TID_STATS_ ## attr) && \ 3971 nla_put_u64_64bit(msg, NL80211_TID_STATS_ ## attr, \ 3972 tidstats->memb, NL80211_TID_STATS_PAD)) \ 3973 goto nla_put_failure; \ 3974 } while (0) 3975 3976 PUT_TIDVAL_U64(RX_MSDU, rx_msdu); 3977 PUT_TIDVAL_U64(TX_MSDU, tx_msdu); 3978 PUT_TIDVAL_U64(TX_MSDU_RETRIES, tx_msdu_retries); 3979 PUT_TIDVAL_U64(TX_MSDU_FAILED, tx_msdu_failed); 3980 3981 #undef PUT_TIDVAL_U64 3982 nla_nest_end(msg, tidattr); 3983 } 3984 3985 nla_nest_end(msg, tidsattr); 3986 } 3987 3988 nla_nest_end(msg, sinfoattr); 3989 3990 if (sinfo->assoc_req_ies_len && 3991 nla_put(msg, NL80211_ATTR_IE, sinfo->assoc_req_ies_len, 3992 sinfo->assoc_req_ies)) 3993 goto nla_put_failure; 3994 3995 genlmsg_end(msg, hdr); 3996 return 0; 3997 3998 nla_put_failure: 3999 genlmsg_cancel(msg, hdr); 4000 return -EMSGSIZE; 4001 } 4002 4003 static int nl80211_dump_station(struct sk_buff *skb, 4004 struct netlink_callback *cb) 4005 { 4006 struct station_info sinfo; 4007 struct cfg80211_registered_device *rdev; 4008 struct wireless_dev *wdev; 4009 u8 mac_addr[ETH_ALEN]; 4010 int sta_idx = cb->args[2]; 4011 int err; 4012 4013 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4014 if (err) 4015 return err; 4016 4017 if (!wdev->netdev) { 4018 err = -EINVAL; 4019 goto out_err; 4020 } 4021 4022 if (!rdev->ops->dump_station) { 4023 err = -EOPNOTSUPP; 4024 goto out_err; 4025 } 4026 4027 while (1) { 4028 memset(&sinfo, 0, sizeof(sinfo)); 4029 err = rdev_dump_station(rdev, wdev->netdev, sta_idx, 4030 mac_addr, &sinfo); 4031 if (err == -ENOENT) 4032 break; 4033 if (err) 4034 goto out_err; 4035 4036 if (nl80211_send_station(skb, NL80211_CMD_NEW_STATION, 4037 NETLINK_CB(cb->skb).portid, 4038 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4039 rdev, wdev->netdev, mac_addr, 4040 &sinfo) < 0) 4041 goto out; 4042 4043 sta_idx++; 4044 } 4045 4046 out: 4047 cb->args[2] = sta_idx; 4048 err = skb->len; 4049 out_err: 4050 nl80211_finish_wdev_dump(rdev); 4051 4052 return err; 4053 } 4054 4055 static int nl80211_get_station(struct sk_buff *skb, struct genl_info *info) 4056 { 4057 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4058 struct net_device *dev = info->user_ptr[1]; 4059 struct station_info sinfo; 4060 struct sk_buff *msg; 4061 u8 *mac_addr = NULL; 4062 int err; 4063 4064 memset(&sinfo, 0, sizeof(sinfo)); 4065 4066 if (!info->attrs[NL80211_ATTR_MAC]) 4067 return -EINVAL; 4068 4069 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4070 4071 if (!rdev->ops->get_station) 4072 return -EOPNOTSUPP; 4073 4074 err = rdev_get_station(rdev, dev, mac_addr, &sinfo); 4075 if (err) 4076 return err; 4077 4078 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4079 if (!msg) 4080 return -ENOMEM; 4081 4082 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 4083 info->snd_portid, info->snd_seq, 0, 4084 rdev, dev, mac_addr, &sinfo) < 0) { 4085 nlmsg_free(msg); 4086 return -ENOBUFS; 4087 } 4088 4089 return genlmsg_reply(msg, info); 4090 } 4091 4092 int cfg80211_check_station_change(struct wiphy *wiphy, 4093 struct station_parameters *params, 4094 enum cfg80211_station_type statype) 4095 { 4096 if (params->listen_interval != -1 && 4097 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4098 return -EINVAL; 4099 4100 if (params->support_p2p_ps != -1 && 4101 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4102 return -EINVAL; 4103 4104 if (params->aid && 4105 !(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) && 4106 statype != CFG80211_STA_AP_CLIENT_UNASSOC) 4107 return -EINVAL; 4108 4109 /* When you run into this, adjust the code below for the new flag */ 4110 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4111 4112 switch (statype) { 4113 case CFG80211_STA_MESH_PEER_KERNEL: 4114 case CFG80211_STA_MESH_PEER_USER: 4115 /* 4116 * No ignoring the TDLS flag here -- the userspace mesh 4117 * code doesn't have the bug of including TDLS in the 4118 * mask everywhere. 4119 */ 4120 if (params->sta_flags_mask & 4121 ~(BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4122 BIT(NL80211_STA_FLAG_MFP) | 4123 BIT(NL80211_STA_FLAG_AUTHORIZED))) 4124 return -EINVAL; 4125 break; 4126 case CFG80211_STA_TDLS_PEER_SETUP: 4127 case CFG80211_STA_TDLS_PEER_ACTIVE: 4128 if (!(params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4129 return -EINVAL; 4130 /* ignore since it can't change */ 4131 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4132 break; 4133 default: 4134 /* disallow mesh-specific things */ 4135 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION) 4136 return -EINVAL; 4137 if (params->local_pm) 4138 return -EINVAL; 4139 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4140 return -EINVAL; 4141 } 4142 4143 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4144 statype != CFG80211_STA_TDLS_PEER_ACTIVE) { 4145 /* TDLS can't be set, ... */ 4146 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) 4147 return -EINVAL; 4148 /* 4149 * ... but don't bother the driver with it. This works around 4150 * a hostapd/wpa_supplicant issue -- it always includes the 4151 * TLDS_PEER flag in the mask even for AP mode. 4152 */ 4153 params->sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4154 } 4155 4156 if (statype != CFG80211_STA_TDLS_PEER_SETUP && 4157 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4158 /* reject other things that can't change */ 4159 if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) 4160 return -EINVAL; 4161 if (params->sta_modify_mask & STATION_PARAM_APPLY_CAPABILITY) 4162 return -EINVAL; 4163 if (params->supported_rates) 4164 return -EINVAL; 4165 if (params->ext_capab || params->ht_capa || params->vht_capa) 4166 return -EINVAL; 4167 } 4168 4169 if (statype != CFG80211_STA_AP_CLIENT && 4170 statype != CFG80211_STA_AP_CLIENT_UNASSOC) { 4171 if (params->vlan) 4172 return -EINVAL; 4173 } 4174 4175 switch (statype) { 4176 case CFG80211_STA_AP_MLME_CLIENT: 4177 /* Use this only for authorizing/unauthorizing a station */ 4178 if (!(params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED))) 4179 return -EOPNOTSUPP; 4180 break; 4181 case CFG80211_STA_AP_CLIENT: 4182 case CFG80211_STA_AP_CLIENT_UNASSOC: 4183 /* accept only the listed bits */ 4184 if (params->sta_flags_mask & 4185 ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4186 BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4187 BIT(NL80211_STA_FLAG_ASSOCIATED) | 4188 BIT(NL80211_STA_FLAG_SHORT_PREAMBLE) | 4189 BIT(NL80211_STA_FLAG_WME) | 4190 BIT(NL80211_STA_FLAG_MFP))) 4191 return -EINVAL; 4192 4193 /* but authenticated/associated only if driver handles it */ 4194 if (!(wiphy->features & NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4195 params->sta_flags_mask & 4196 (BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4197 BIT(NL80211_STA_FLAG_ASSOCIATED))) 4198 return -EINVAL; 4199 break; 4200 case CFG80211_STA_IBSS: 4201 case CFG80211_STA_AP_STA: 4202 /* reject any changes other than AUTHORIZED */ 4203 if (params->sta_flags_mask & ~BIT(NL80211_STA_FLAG_AUTHORIZED)) 4204 return -EINVAL; 4205 break; 4206 case CFG80211_STA_TDLS_PEER_SETUP: 4207 /* reject any changes other than AUTHORIZED or WME */ 4208 if (params->sta_flags_mask & ~(BIT(NL80211_STA_FLAG_AUTHORIZED) | 4209 BIT(NL80211_STA_FLAG_WME))) 4210 return -EINVAL; 4211 /* force (at least) rates when authorizing */ 4212 if (params->sta_flags_set & BIT(NL80211_STA_FLAG_AUTHORIZED) && 4213 !params->supported_rates) 4214 return -EINVAL; 4215 break; 4216 case CFG80211_STA_TDLS_PEER_ACTIVE: 4217 /* reject any changes */ 4218 return -EINVAL; 4219 case CFG80211_STA_MESH_PEER_KERNEL: 4220 if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) 4221 return -EINVAL; 4222 break; 4223 case CFG80211_STA_MESH_PEER_USER: 4224 if (params->plink_action != NL80211_PLINK_ACTION_NO_ACTION && 4225 params->plink_action != NL80211_PLINK_ACTION_BLOCK) 4226 return -EINVAL; 4227 break; 4228 } 4229 4230 return 0; 4231 } 4232 EXPORT_SYMBOL(cfg80211_check_station_change); 4233 4234 /* 4235 * Get vlan interface making sure it is running and on the right wiphy. 4236 */ 4237 static struct net_device *get_vlan(struct genl_info *info, 4238 struct cfg80211_registered_device *rdev) 4239 { 4240 struct nlattr *vlanattr = info->attrs[NL80211_ATTR_STA_VLAN]; 4241 struct net_device *v; 4242 int ret; 4243 4244 if (!vlanattr) 4245 return NULL; 4246 4247 v = dev_get_by_index(genl_info_net(info), nla_get_u32(vlanattr)); 4248 if (!v) 4249 return ERR_PTR(-ENODEV); 4250 4251 if (!v->ieee80211_ptr || v->ieee80211_ptr->wiphy != &rdev->wiphy) { 4252 ret = -EINVAL; 4253 goto error; 4254 } 4255 4256 if (v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4257 v->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4258 v->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) { 4259 ret = -EINVAL; 4260 goto error; 4261 } 4262 4263 if (!netif_running(v)) { 4264 ret = -ENETDOWN; 4265 goto error; 4266 } 4267 4268 return v; 4269 error: 4270 dev_put(v); 4271 return ERR_PTR(ret); 4272 } 4273 4274 static const struct nla_policy 4275 nl80211_sta_wme_policy[NL80211_STA_WME_MAX + 1] = { 4276 [NL80211_STA_WME_UAPSD_QUEUES] = { .type = NLA_U8 }, 4277 [NL80211_STA_WME_MAX_SP] = { .type = NLA_U8 }, 4278 }; 4279 4280 static int nl80211_parse_sta_wme(struct genl_info *info, 4281 struct station_parameters *params) 4282 { 4283 struct nlattr *tb[NL80211_STA_WME_MAX + 1]; 4284 struct nlattr *nla; 4285 int err; 4286 4287 /* parse WME attributes if present */ 4288 if (!info->attrs[NL80211_ATTR_STA_WME]) 4289 return 0; 4290 4291 nla = info->attrs[NL80211_ATTR_STA_WME]; 4292 err = nla_parse_nested(tb, NL80211_STA_WME_MAX, nla, 4293 nl80211_sta_wme_policy); 4294 if (err) 4295 return err; 4296 4297 if (tb[NL80211_STA_WME_UAPSD_QUEUES]) 4298 params->uapsd_queues = nla_get_u8( 4299 tb[NL80211_STA_WME_UAPSD_QUEUES]); 4300 if (params->uapsd_queues & ~IEEE80211_WMM_IE_STA_QOSINFO_AC_MASK) 4301 return -EINVAL; 4302 4303 if (tb[NL80211_STA_WME_MAX_SP]) 4304 params->max_sp = nla_get_u8(tb[NL80211_STA_WME_MAX_SP]); 4305 4306 if (params->max_sp & ~IEEE80211_WMM_IE_STA_QOSINFO_SP_MASK) 4307 return -EINVAL; 4308 4309 params->sta_modify_mask |= STATION_PARAM_APPLY_UAPSD; 4310 4311 return 0; 4312 } 4313 4314 static int nl80211_parse_sta_channel_info(struct genl_info *info, 4315 struct station_parameters *params) 4316 { 4317 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]) { 4318 params->supported_channels = 4319 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4320 params->supported_channels_len = 4321 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_CHANNELS]); 4322 /* 4323 * Need to include at least one (first channel, number of 4324 * channels) tuple for each subband, and must have proper 4325 * tuples for the rest of the data as well. 4326 */ 4327 if (params->supported_channels_len < 2) 4328 return -EINVAL; 4329 if (params->supported_channels_len % 2) 4330 return -EINVAL; 4331 } 4332 4333 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]) { 4334 params->supported_oper_classes = 4335 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4336 params->supported_oper_classes_len = 4337 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_OPER_CLASSES]); 4338 /* 4339 * The value of the Length field of the Supported Operating 4340 * Classes element is between 2 and 253. 4341 */ 4342 if (params->supported_oper_classes_len < 2 || 4343 params->supported_oper_classes_len > 253) 4344 return -EINVAL; 4345 } 4346 return 0; 4347 } 4348 4349 static int nl80211_set_station_tdls(struct genl_info *info, 4350 struct station_parameters *params) 4351 { 4352 int err; 4353 /* Dummy STA entry gets updated once the peer capabilities are known */ 4354 if (info->attrs[NL80211_ATTR_PEER_AID]) 4355 params->aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4356 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4357 params->ht_capa = 4358 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4359 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4360 params->vht_capa = 4361 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4362 4363 err = nl80211_parse_sta_channel_info(info, params); 4364 if (err) 4365 return err; 4366 4367 return nl80211_parse_sta_wme(info, params); 4368 } 4369 4370 static int nl80211_set_station(struct sk_buff *skb, struct genl_info *info) 4371 { 4372 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4373 struct net_device *dev = info->user_ptr[1]; 4374 struct station_parameters params; 4375 u8 *mac_addr; 4376 int err; 4377 4378 memset(¶ms, 0, sizeof(params)); 4379 4380 if (!rdev->ops->change_station) 4381 return -EOPNOTSUPP; 4382 4383 /* 4384 * AID and listen_interval properties can be set only for unassociated 4385 * station. Include these parameters here and will check them in 4386 * cfg80211_check_station_change(). 4387 */ 4388 if (info->attrs[NL80211_ATTR_STA_AID]) 4389 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4390 4391 if (info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4392 params.listen_interval = 4393 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4394 else 4395 params.listen_interval = -1; 4396 4397 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 4398 u8 tmp; 4399 4400 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 4401 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 4402 return -EINVAL; 4403 4404 params.support_p2p_ps = tmp; 4405 } else { 4406 params.support_p2p_ps = -1; 4407 } 4408 4409 if (!info->attrs[NL80211_ATTR_MAC]) 4410 return -EINVAL; 4411 4412 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4413 4414 if (info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) { 4415 params.supported_rates = 4416 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4417 params.supported_rates_len = 4418 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4419 } 4420 4421 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4422 params.capability = 4423 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4424 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4425 } 4426 4427 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4428 params.ext_capab = 4429 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4430 params.ext_capab_len = 4431 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4432 } 4433 4434 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4435 return -EINVAL; 4436 4437 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4438 params.plink_action = 4439 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4440 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4441 return -EINVAL; 4442 } 4443 4444 if (info->attrs[NL80211_ATTR_STA_PLINK_STATE]) { 4445 params.plink_state = 4446 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_STATE]); 4447 if (params.plink_state >= NUM_NL80211_PLINK_STATES) 4448 return -EINVAL; 4449 if (info->attrs[NL80211_ATTR_MESH_PEER_AID]) { 4450 params.peer_aid = nla_get_u16( 4451 info->attrs[NL80211_ATTR_MESH_PEER_AID]); 4452 if (params.peer_aid > IEEE80211_MAX_AID) 4453 return -EINVAL; 4454 } 4455 params.sta_modify_mask |= STATION_PARAM_APPLY_PLINK_STATE; 4456 } 4457 4458 if (info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]) { 4459 enum nl80211_mesh_power_mode pm = nla_get_u32( 4460 info->attrs[NL80211_ATTR_LOCAL_MESH_POWER_MODE]); 4461 4462 if (pm <= NL80211_MESH_POWER_UNKNOWN || 4463 pm > NL80211_MESH_POWER_MAX) 4464 return -EINVAL; 4465 4466 params.local_pm = pm; 4467 } 4468 4469 /* Include parameters for TDLS peer (will check later) */ 4470 err = nl80211_set_station_tdls(info, ¶ms); 4471 if (err) 4472 return err; 4473 4474 params.vlan = get_vlan(info, rdev); 4475 if (IS_ERR(params.vlan)) 4476 return PTR_ERR(params.vlan); 4477 4478 switch (dev->ieee80211_ptr->iftype) { 4479 case NL80211_IFTYPE_AP: 4480 case NL80211_IFTYPE_AP_VLAN: 4481 case NL80211_IFTYPE_P2P_GO: 4482 case NL80211_IFTYPE_P2P_CLIENT: 4483 case NL80211_IFTYPE_STATION: 4484 case NL80211_IFTYPE_ADHOC: 4485 case NL80211_IFTYPE_MESH_POINT: 4486 break; 4487 default: 4488 err = -EOPNOTSUPP; 4489 goto out_put_vlan; 4490 } 4491 4492 /* driver will call cfg80211_check_station_change() */ 4493 err = rdev_change_station(rdev, dev, mac_addr, ¶ms); 4494 4495 out_put_vlan: 4496 if (params.vlan) 4497 dev_put(params.vlan); 4498 4499 return err; 4500 } 4501 4502 static int nl80211_new_station(struct sk_buff *skb, struct genl_info *info) 4503 { 4504 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4505 int err; 4506 struct net_device *dev = info->user_ptr[1]; 4507 struct station_parameters params; 4508 u8 *mac_addr = NULL; 4509 u32 auth_assoc = BIT(NL80211_STA_FLAG_AUTHENTICATED) | 4510 BIT(NL80211_STA_FLAG_ASSOCIATED); 4511 4512 memset(¶ms, 0, sizeof(params)); 4513 4514 if (!rdev->ops->add_station) 4515 return -EOPNOTSUPP; 4516 4517 if (!info->attrs[NL80211_ATTR_MAC]) 4518 return -EINVAL; 4519 4520 if (!info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]) 4521 return -EINVAL; 4522 4523 if (!info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]) 4524 return -EINVAL; 4525 4526 if (!info->attrs[NL80211_ATTR_STA_AID] && 4527 !info->attrs[NL80211_ATTR_PEER_AID]) 4528 return -EINVAL; 4529 4530 mac_addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 4531 params.supported_rates = 4532 nla_data(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4533 params.supported_rates_len = 4534 nla_len(info->attrs[NL80211_ATTR_STA_SUPPORTED_RATES]); 4535 params.listen_interval = 4536 nla_get_u16(info->attrs[NL80211_ATTR_STA_LISTEN_INTERVAL]); 4537 4538 if (info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]) { 4539 u8 tmp; 4540 4541 tmp = nla_get_u8(info->attrs[NL80211_ATTR_STA_SUPPORT_P2P_PS]); 4542 if (tmp >= NUM_NL80211_P2P_PS_STATUS) 4543 return -EINVAL; 4544 4545 params.support_p2p_ps = tmp; 4546 } else { 4547 /* 4548 * if not specified, assume it's supported for P2P GO interface, 4549 * and is NOT supported for AP interface 4550 */ 4551 params.support_p2p_ps = 4552 dev->ieee80211_ptr->iftype == NL80211_IFTYPE_P2P_GO; 4553 } 4554 4555 if (info->attrs[NL80211_ATTR_PEER_AID]) 4556 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_PEER_AID]); 4557 else 4558 params.aid = nla_get_u16(info->attrs[NL80211_ATTR_STA_AID]); 4559 if (!params.aid || params.aid > IEEE80211_MAX_AID) 4560 return -EINVAL; 4561 4562 if (info->attrs[NL80211_ATTR_STA_CAPABILITY]) { 4563 params.capability = 4564 nla_get_u16(info->attrs[NL80211_ATTR_STA_CAPABILITY]); 4565 params.sta_modify_mask |= STATION_PARAM_APPLY_CAPABILITY; 4566 } 4567 4568 if (info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]) { 4569 params.ext_capab = 4570 nla_data(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4571 params.ext_capab_len = 4572 nla_len(info->attrs[NL80211_ATTR_STA_EXT_CAPABILITY]); 4573 } 4574 4575 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) 4576 params.ht_capa = 4577 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]); 4578 4579 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) 4580 params.vht_capa = 4581 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]); 4582 4583 if (info->attrs[NL80211_ATTR_OPMODE_NOTIF]) { 4584 params.opmode_notif_used = true; 4585 params.opmode_notif = 4586 nla_get_u8(info->attrs[NL80211_ATTR_OPMODE_NOTIF]); 4587 } 4588 4589 if (info->attrs[NL80211_ATTR_STA_PLINK_ACTION]) { 4590 params.plink_action = 4591 nla_get_u8(info->attrs[NL80211_ATTR_STA_PLINK_ACTION]); 4592 if (params.plink_action >= NUM_NL80211_PLINK_ACTIONS) 4593 return -EINVAL; 4594 } 4595 4596 err = nl80211_parse_sta_channel_info(info, ¶ms); 4597 if (err) 4598 return err; 4599 4600 err = nl80211_parse_sta_wme(info, ¶ms); 4601 if (err) 4602 return err; 4603 4604 if (parse_station_flags(info, dev->ieee80211_ptr->iftype, ¶ms)) 4605 return -EINVAL; 4606 4607 /* HT/VHT requires QoS, but if we don't have that just ignore HT/VHT 4608 * as userspace might just pass through the capabilities from the IEs 4609 * directly, rather than enforcing this restriction and returning an 4610 * error in this case. 4611 */ 4612 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) { 4613 params.ht_capa = NULL; 4614 params.vht_capa = NULL; 4615 } 4616 4617 /* When you run into this, adjust the code below for the new flag */ 4618 BUILD_BUG_ON(NL80211_STA_FLAG_MAX != 7); 4619 4620 switch (dev->ieee80211_ptr->iftype) { 4621 case NL80211_IFTYPE_AP: 4622 case NL80211_IFTYPE_AP_VLAN: 4623 case NL80211_IFTYPE_P2P_GO: 4624 /* ignore WME attributes if iface/sta is not capable */ 4625 if (!(rdev->wiphy.flags & WIPHY_FLAG_AP_UAPSD) || 4626 !(params.sta_flags_set & BIT(NL80211_STA_FLAG_WME))) 4627 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4628 4629 /* TDLS peers cannot be added */ 4630 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4631 info->attrs[NL80211_ATTR_PEER_AID]) 4632 return -EINVAL; 4633 /* but don't bother the driver with it */ 4634 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_TDLS_PEER); 4635 4636 /* allow authenticated/associated only if driver handles it */ 4637 if (!(rdev->wiphy.features & 4638 NL80211_FEATURE_FULL_AP_CLIENT_STATE) && 4639 params.sta_flags_mask & auth_assoc) 4640 return -EINVAL; 4641 4642 /* Older userspace, or userspace wanting to be compatible with 4643 * !NL80211_FEATURE_FULL_AP_CLIENT_STATE, will not set the auth 4644 * and assoc flags in the mask, but assumes the station will be 4645 * added as associated anyway since this was the required driver 4646 * behaviour before NL80211_FEATURE_FULL_AP_CLIENT_STATE was 4647 * introduced. 4648 * In order to not bother drivers with this quirk in the API 4649 * set the flags in both the mask and set for new stations in 4650 * this case. 4651 */ 4652 if (!(params.sta_flags_mask & auth_assoc)) { 4653 params.sta_flags_mask |= auth_assoc; 4654 params.sta_flags_set |= auth_assoc; 4655 } 4656 4657 /* must be last in here for error handling */ 4658 params.vlan = get_vlan(info, rdev); 4659 if (IS_ERR(params.vlan)) 4660 return PTR_ERR(params.vlan); 4661 break; 4662 case NL80211_IFTYPE_MESH_POINT: 4663 /* ignore uAPSD data */ 4664 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4665 4666 /* associated is disallowed */ 4667 if (params.sta_flags_mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) 4668 return -EINVAL; 4669 /* TDLS peers cannot be added */ 4670 if ((params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER)) || 4671 info->attrs[NL80211_ATTR_PEER_AID]) 4672 return -EINVAL; 4673 break; 4674 case NL80211_IFTYPE_STATION: 4675 case NL80211_IFTYPE_P2P_CLIENT: 4676 /* ignore uAPSD data */ 4677 params.sta_modify_mask &= ~STATION_PARAM_APPLY_UAPSD; 4678 4679 /* these are disallowed */ 4680 if (params.sta_flags_mask & 4681 (BIT(NL80211_STA_FLAG_ASSOCIATED) | 4682 BIT(NL80211_STA_FLAG_AUTHENTICATED))) 4683 return -EINVAL; 4684 /* Only TDLS peers can be added */ 4685 if (!(params.sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))) 4686 return -EINVAL; 4687 /* Can only add if TDLS ... */ 4688 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS)) 4689 return -EOPNOTSUPP; 4690 /* ... with external setup is supported */ 4691 if (!(rdev->wiphy.flags & WIPHY_FLAG_TDLS_EXTERNAL_SETUP)) 4692 return -EOPNOTSUPP; 4693 /* 4694 * Older wpa_supplicant versions always mark the TDLS peer 4695 * as authorized, but it shouldn't yet be. 4696 */ 4697 params.sta_flags_mask &= ~BIT(NL80211_STA_FLAG_AUTHORIZED); 4698 break; 4699 default: 4700 return -EOPNOTSUPP; 4701 } 4702 4703 /* be aware of params.vlan when changing code here */ 4704 4705 err = rdev_add_station(rdev, dev, mac_addr, ¶ms); 4706 4707 if (params.vlan) 4708 dev_put(params.vlan); 4709 return err; 4710 } 4711 4712 static int nl80211_del_station(struct sk_buff *skb, struct genl_info *info) 4713 { 4714 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4715 struct net_device *dev = info->user_ptr[1]; 4716 struct station_del_parameters params; 4717 4718 memset(¶ms, 0, sizeof(params)); 4719 4720 if (info->attrs[NL80211_ATTR_MAC]) 4721 params.mac = nla_data(info->attrs[NL80211_ATTR_MAC]); 4722 4723 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 4724 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP_VLAN && 4725 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 4726 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 4727 return -EINVAL; 4728 4729 if (!rdev->ops->del_station) 4730 return -EOPNOTSUPP; 4731 4732 if (info->attrs[NL80211_ATTR_MGMT_SUBTYPE]) { 4733 params.subtype = 4734 nla_get_u8(info->attrs[NL80211_ATTR_MGMT_SUBTYPE]); 4735 if (params.subtype != IEEE80211_STYPE_DISASSOC >> 4 && 4736 params.subtype != IEEE80211_STYPE_DEAUTH >> 4) 4737 return -EINVAL; 4738 } else { 4739 /* Default to Deauthentication frame */ 4740 params.subtype = IEEE80211_STYPE_DEAUTH >> 4; 4741 } 4742 4743 if (info->attrs[NL80211_ATTR_REASON_CODE]) { 4744 params.reason_code = 4745 nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 4746 if (params.reason_code == 0) 4747 return -EINVAL; /* 0 is reserved */ 4748 } else { 4749 /* Default to reason code 2 */ 4750 params.reason_code = WLAN_REASON_PREV_AUTH_NOT_VALID; 4751 } 4752 4753 return rdev_del_station(rdev, dev, ¶ms); 4754 } 4755 4756 static int nl80211_send_mpath(struct sk_buff *msg, u32 portid, u32 seq, 4757 int flags, struct net_device *dev, 4758 u8 *dst, u8 *next_hop, 4759 struct mpath_info *pinfo) 4760 { 4761 void *hdr; 4762 struct nlattr *pinfoattr; 4763 4764 hdr = nl80211hdr_put(msg, portid, seq, flags, NL80211_CMD_NEW_MPATH); 4765 if (!hdr) 4766 return -1; 4767 4768 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 4769 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, dst) || 4770 nla_put(msg, NL80211_ATTR_MPATH_NEXT_HOP, ETH_ALEN, next_hop) || 4771 nla_put_u32(msg, NL80211_ATTR_GENERATION, pinfo->generation)) 4772 goto nla_put_failure; 4773 4774 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MPATH_INFO); 4775 if (!pinfoattr) 4776 goto nla_put_failure; 4777 if ((pinfo->filled & MPATH_INFO_FRAME_QLEN) && 4778 nla_put_u32(msg, NL80211_MPATH_INFO_FRAME_QLEN, 4779 pinfo->frame_qlen)) 4780 goto nla_put_failure; 4781 if (((pinfo->filled & MPATH_INFO_SN) && 4782 nla_put_u32(msg, NL80211_MPATH_INFO_SN, pinfo->sn)) || 4783 ((pinfo->filled & MPATH_INFO_METRIC) && 4784 nla_put_u32(msg, NL80211_MPATH_INFO_METRIC, 4785 pinfo->metric)) || 4786 ((pinfo->filled & MPATH_INFO_EXPTIME) && 4787 nla_put_u32(msg, NL80211_MPATH_INFO_EXPTIME, 4788 pinfo->exptime)) || 4789 ((pinfo->filled & MPATH_INFO_FLAGS) && 4790 nla_put_u8(msg, NL80211_MPATH_INFO_FLAGS, 4791 pinfo->flags)) || 4792 ((pinfo->filled & MPATH_INFO_DISCOVERY_TIMEOUT) && 4793 nla_put_u32(msg, NL80211_MPATH_INFO_DISCOVERY_TIMEOUT, 4794 pinfo->discovery_timeout)) || 4795 ((pinfo->filled & MPATH_INFO_DISCOVERY_RETRIES) && 4796 nla_put_u8(msg, NL80211_MPATH_INFO_DISCOVERY_RETRIES, 4797 pinfo->discovery_retries))) 4798 goto nla_put_failure; 4799 4800 nla_nest_end(msg, pinfoattr); 4801 4802 genlmsg_end(msg, hdr); 4803 return 0; 4804 4805 nla_put_failure: 4806 genlmsg_cancel(msg, hdr); 4807 return -EMSGSIZE; 4808 } 4809 4810 static int nl80211_dump_mpath(struct sk_buff *skb, 4811 struct netlink_callback *cb) 4812 { 4813 struct mpath_info pinfo; 4814 struct cfg80211_registered_device *rdev; 4815 struct wireless_dev *wdev; 4816 u8 dst[ETH_ALEN]; 4817 u8 next_hop[ETH_ALEN]; 4818 int path_idx = cb->args[2]; 4819 int err; 4820 4821 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 4822 if (err) 4823 return err; 4824 4825 if (!rdev->ops->dump_mpath) { 4826 err = -EOPNOTSUPP; 4827 goto out_err; 4828 } 4829 4830 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 4831 err = -EOPNOTSUPP; 4832 goto out_err; 4833 } 4834 4835 while (1) { 4836 err = rdev_dump_mpath(rdev, wdev->netdev, path_idx, dst, 4837 next_hop, &pinfo); 4838 if (err == -ENOENT) 4839 break; 4840 if (err) 4841 goto out_err; 4842 4843 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 4844 cb->nlh->nlmsg_seq, NLM_F_MULTI, 4845 wdev->netdev, dst, next_hop, 4846 &pinfo) < 0) 4847 goto out; 4848 4849 path_idx++; 4850 } 4851 4852 out: 4853 cb->args[2] = path_idx; 4854 err = skb->len; 4855 out_err: 4856 nl80211_finish_wdev_dump(rdev); 4857 return err; 4858 } 4859 4860 static int nl80211_get_mpath(struct sk_buff *skb, struct genl_info *info) 4861 { 4862 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4863 int err; 4864 struct net_device *dev = info->user_ptr[1]; 4865 struct mpath_info pinfo; 4866 struct sk_buff *msg; 4867 u8 *dst = NULL; 4868 u8 next_hop[ETH_ALEN]; 4869 4870 memset(&pinfo, 0, sizeof(pinfo)); 4871 4872 if (!info->attrs[NL80211_ATTR_MAC]) 4873 return -EINVAL; 4874 4875 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4876 4877 if (!rdev->ops->get_mpath) 4878 return -EOPNOTSUPP; 4879 4880 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4881 return -EOPNOTSUPP; 4882 4883 err = rdev_get_mpath(rdev, dev, dst, next_hop, &pinfo); 4884 if (err) 4885 return err; 4886 4887 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4888 if (!msg) 4889 return -ENOMEM; 4890 4891 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4892 dev, dst, next_hop, &pinfo) < 0) { 4893 nlmsg_free(msg); 4894 return -ENOBUFS; 4895 } 4896 4897 return genlmsg_reply(msg, info); 4898 } 4899 4900 static int nl80211_set_mpath(struct sk_buff *skb, struct genl_info *info) 4901 { 4902 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4903 struct net_device *dev = info->user_ptr[1]; 4904 u8 *dst = NULL; 4905 u8 *next_hop = NULL; 4906 4907 if (!info->attrs[NL80211_ATTR_MAC]) 4908 return -EINVAL; 4909 4910 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4911 return -EINVAL; 4912 4913 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4914 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4915 4916 if (!rdev->ops->change_mpath) 4917 return -EOPNOTSUPP; 4918 4919 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4920 return -EOPNOTSUPP; 4921 4922 return rdev_change_mpath(rdev, dev, dst, next_hop); 4923 } 4924 4925 static int nl80211_new_mpath(struct sk_buff *skb, struct genl_info *info) 4926 { 4927 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4928 struct net_device *dev = info->user_ptr[1]; 4929 u8 *dst = NULL; 4930 u8 *next_hop = NULL; 4931 4932 if (!info->attrs[NL80211_ATTR_MAC]) 4933 return -EINVAL; 4934 4935 if (!info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]) 4936 return -EINVAL; 4937 4938 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4939 next_hop = nla_data(info->attrs[NL80211_ATTR_MPATH_NEXT_HOP]); 4940 4941 if (!rdev->ops->add_mpath) 4942 return -EOPNOTSUPP; 4943 4944 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4945 return -EOPNOTSUPP; 4946 4947 return rdev_add_mpath(rdev, dev, dst, next_hop); 4948 } 4949 4950 static int nl80211_del_mpath(struct sk_buff *skb, struct genl_info *info) 4951 { 4952 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4953 struct net_device *dev = info->user_ptr[1]; 4954 u8 *dst = NULL; 4955 4956 if (info->attrs[NL80211_ATTR_MAC]) 4957 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4958 4959 if (!rdev->ops->del_mpath) 4960 return -EOPNOTSUPP; 4961 4962 return rdev_del_mpath(rdev, dev, dst); 4963 } 4964 4965 static int nl80211_get_mpp(struct sk_buff *skb, struct genl_info *info) 4966 { 4967 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 4968 int err; 4969 struct net_device *dev = info->user_ptr[1]; 4970 struct mpath_info pinfo; 4971 struct sk_buff *msg; 4972 u8 *dst = NULL; 4973 u8 mpp[ETH_ALEN]; 4974 4975 memset(&pinfo, 0, sizeof(pinfo)); 4976 4977 if (!info->attrs[NL80211_ATTR_MAC]) 4978 return -EINVAL; 4979 4980 dst = nla_data(info->attrs[NL80211_ATTR_MAC]); 4981 4982 if (!rdev->ops->get_mpp) 4983 return -EOPNOTSUPP; 4984 4985 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT) 4986 return -EOPNOTSUPP; 4987 4988 err = rdev_get_mpp(rdev, dev, dst, mpp, &pinfo); 4989 if (err) 4990 return err; 4991 4992 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 4993 if (!msg) 4994 return -ENOMEM; 4995 4996 if (nl80211_send_mpath(msg, info->snd_portid, info->snd_seq, 0, 4997 dev, dst, mpp, &pinfo) < 0) { 4998 nlmsg_free(msg); 4999 return -ENOBUFS; 5000 } 5001 5002 return genlmsg_reply(msg, info); 5003 } 5004 5005 static int nl80211_dump_mpp(struct sk_buff *skb, 5006 struct netlink_callback *cb) 5007 { 5008 struct mpath_info pinfo; 5009 struct cfg80211_registered_device *rdev; 5010 struct wireless_dev *wdev; 5011 u8 dst[ETH_ALEN]; 5012 u8 mpp[ETH_ALEN]; 5013 int path_idx = cb->args[2]; 5014 int err; 5015 5016 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 5017 if (err) 5018 return err; 5019 5020 if (!rdev->ops->dump_mpp) { 5021 err = -EOPNOTSUPP; 5022 goto out_err; 5023 } 5024 5025 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) { 5026 err = -EOPNOTSUPP; 5027 goto out_err; 5028 } 5029 5030 while (1) { 5031 err = rdev_dump_mpp(rdev, wdev->netdev, path_idx, dst, 5032 mpp, &pinfo); 5033 if (err == -ENOENT) 5034 break; 5035 if (err) 5036 goto out_err; 5037 5038 if (nl80211_send_mpath(skb, NETLINK_CB(cb->skb).portid, 5039 cb->nlh->nlmsg_seq, NLM_F_MULTI, 5040 wdev->netdev, dst, mpp, 5041 &pinfo) < 0) 5042 goto out; 5043 5044 path_idx++; 5045 } 5046 5047 out: 5048 cb->args[2] = path_idx; 5049 err = skb->len; 5050 out_err: 5051 nl80211_finish_wdev_dump(rdev); 5052 return err; 5053 } 5054 5055 static int nl80211_set_bss(struct sk_buff *skb, struct genl_info *info) 5056 { 5057 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5058 struct net_device *dev = info->user_ptr[1]; 5059 struct wireless_dev *wdev = dev->ieee80211_ptr; 5060 struct bss_parameters params; 5061 int err; 5062 5063 memset(¶ms, 0, sizeof(params)); 5064 /* default to not changing parameters */ 5065 params.use_cts_prot = -1; 5066 params.use_short_preamble = -1; 5067 params.use_short_slot_time = -1; 5068 params.ap_isolate = -1; 5069 params.ht_opmode = -1; 5070 params.p2p_ctwindow = -1; 5071 params.p2p_opp_ps = -1; 5072 5073 if (info->attrs[NL80211_ATTR_BSS_CTS_PROT]) 5074 params.use_cts_prot = 5075 nla_get_u8(info->attrs[NL80211_ATTR_BSS_CTS_PROT]); 5076 if (info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]) 5077 params.use_short_preamble = 5078 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_PREAMBLE]); 5079 if (info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]) 5080 params.use_short_slot_time = 5081 nla_get_u8(info->attrs[NL80211_ATTR_BSS_SHORT_SLOT_TIME]); 5082 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 5083 params.basic_rates = 5084 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5085 params.basic_rates_len = 5086 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 5087 } 5088 if (info->attrs[NL80211_ATTR_AP_ISOLATE]) 5089 params.ap_isolate = !!nla_get_u8(info->attrs[NL80211_ATTR_AP_ISOLATE]); 5090 if (info->attrs[NL80211_ATTR_BSS_HT_OPMODE]) 5091 params.ht_opmode = 5092 nla_get_u16(info->attrs[NL80211_ATTR_BSS_HT_OPMODE]); 5093 5094 if (info->attrs[NL80211_ATTR_P2P_CTWINDOW]) { 5095 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5096 return -EINVAL; 5097 params.p2p_ctwindow = 5098 nla_get_s8(info->attrs[NL80211_ATTR_P2P_CTWINDOW]); 5099 if (params.p2p_ctwindow < 0) 5100 return -EINVAL; 5101 if (params.p2p_ctwindow != 0 && 5102 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_CTWIN)) 5103 return -EINVAL; 5104 } 5105 5106 if (info->attrs[NL80211_ATTR_P2P_OPPPS]) { 5107 u8 tmp; 5108 5109 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5110 return -EINVAL; 5111 tmp = nla_get_u8(info->attrs[NL80211_ATTR_P2P_OPPPS]); 5112 if (tmp > 1) 5113 return -EINVAL; 5114 params.p2p_opp_ps = tmp; 5115 if (params.p2p_opp_ps && 5116 !(rdev->wiphy.features & NL80211_FEATURE_P2P_GO_OPPPS)) 5117 return -EINVAL; 5118 } 5119 5120 if (!rdev->ops->change_bss) 5121 return -EOPNOTSUPP; 5122 5123 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_AP && 5124 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_GO) 5125 return -EOPNOTSUPP; 5126 5127 wdev_lock(wdev); 5128 err = rdev_change_bss(rdev, dev, ¶ms); 5129 wdev_unlock(wdev); 5130 5131 return err; 5132 } 5133 5134 static int nl80211_req_set_reg(struct sk_buff *skb, struct genl_info *info) 5135 { 5136 char *data = NULL; 5137 bool is_indoor; 5138 enum nl80211_user_reg_hint_type user_reg_hint_type; 5139 u32 owner_nlportid; 5140 5141 /* 5142 * You should only get this when cfg80211 hasn't yet initialized 5143 * completely when built-in to the kernel right between the time 5144 * window between nl80211_init() and regulatory_init(), if that is 5145 * even possible. 5146 */ 5147 if (unlikely(!rcu_access_pointer(cfg80211_regdomain))) 5148 return -EINPROGRESS; 5149 5150 if (info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]) 5151 user_reg_hint_type = 5152 nla_get_u32(info->attrs[NL80211_ATTR_USER_REG_HINT_TYPE]); 5153 else 5154 user_reg_hint_type = NL80211_USER_REG_HINT_USER; 5155 5156 switch (user_reg_hint_type) { 5157 case NL80211_USER_REG_HINT_USER: 5158 case NL80211_USER_REG_HINT_CELL_BASE: 5159 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5160 return -EINVAL; 5161 5162 data = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5163 return regulatory_hint_user(data, user_reg_hint_type); 5164 case NL80211_USER_REG_HINT_INDOOR: 5165 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) { 5166 owner_nlportid = info->snd_portid; 5167 is_indoor = !!info->attrs[NL80211_ATTR_REG_INDOOR]; 5168 } else { 5169 owner_nlportid = 0; 5170 is_indoor = true; 5171 } 5172 5173 return regulatory_hint_indoor(is_indoor, owner_nlportid); 5174 default: 5175 return -EINVAL; 5176 } 5177 } 5178 5179 static int nl80211_get_mesh_config(struct sk_buff *skb, 5180 struct genl_info *info) 5181 { 5182 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5183 struct net_device *dev = info->user_ptr[1]; 5184 struct wireless_dev *wdev = dev->ieee80211_ptr; 5185 struct mesh_config cur_params; 5186 int err = 0; 5187 void *hdr; 5188 struct nlattr *pinfoattr; 5189 struct sk_buff *msg; 5190 5191 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5192 return -EOPNOTSUPP; 5193 5194 if (!rdev->ops->get_mesh_config) 5195 return -EOPNOTSUPP; 5196 5197 wdev_lock(wdev); 5198 /* If not connected, get default parameters */ 5199 if (!wdev->mesh_id_len) 5200 memcpy(&cur_params, &default_mesh_config, sizeof(cur_params)); 5201 else 5202 err = rdev_get_mesh_config(rdev, dev, &cur_params); 5203 wdev_unlock(wdev); 5204 5205 if (err) 5206 return err; 5207 5208 /* Draw up a netlink message to send back */ 5209 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5210 if (!msg) 5211 return -ENOMEM; 5212 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5213 NL80211_CMD_GET_MESH_CONFIG); 5214 if (!hdr) 5215 goto out; 5216 pinfoattr = nla_nest_start(msg, NL80211_ATTR_MESH_CONFIG); 5217 if (!pinfoattr) 5218 goto nla_put_failure; 5219 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 5220 nla_put_u16(msg, NL80211_MESHCONF_RETRY_TIMEOUT, 5221 cur_params.dot11MeshRetryTimeout) || 5222 nla_put_u16(msg, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5223 cur_params.dot11MeshConfirmTimeout) || 5224 nla_put_u16(msg, NL80211_MESHCONF_HOLDING_TIMEOUT, 5225 cur_params.dot11MeshHoldingTimeout) || 5226 nla_put_u16(msg, NL80211_MESHCONF_MAX_PEER_LINKS, 5227 cur_params.dot11MeshMaxPeerLinks) || 5228 nla_put_u8(msg, NL80211_MESHCONF_MAX_RETRIES, 5229 cur_params.dot11MeshMaxRetries) || 5230 nla_put_u8(msg, NL80211_MESHCONF_TTL, 5231 cur_params.dot11MeshTTL) || 5232 nla_put_u8(msg, NL80211_MESHCONF_ELEMENT_TTL, 5233 cur_params.element_ttl) || 5234 nla_put_u8(msg, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5235 cur_params.auto_open_plinks) || 5236 nla_put_u32(msg, NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5237 cur_params.dot11MeshNbrOffsetMaxNeighbor) || 5238 nla_put_u8(msg, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5239 cur_params.dot11MeshHWMPmaxPREQretries) || 5240 nla_put_u32(msg, NL80211_MESHCONF_PATH_REFRESH_TIME, 5241 cur_params.path_refresh_time) || 5242 nla_put_u16(msg, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5243 cur_params.min_discovery_timeout) || 5244 nla_put_u32(msg, NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5245 cur_params.dot11MeshHWMPactivePathTimeout) || 5246 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5247 cur_params.dot11MeshHWMPpreqMinInterval) || 5248 nla_put_u16(msg, NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5249 cur_params.dot11MeshHWMPperrMinInterval) || 5250 nla_put_u16(msg, NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5251 cur_params.dot11MeshHWMPnetDiameterTraversalTime) || 5252 nla_put_u8(msg, NL80211_MESHCONF_HWMP_ROOTMODE, 5253 cur_params.dot11MeshHWMPRootMode) || 5254 nla_put_u16(msg, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5255 cur_params.dot11MeshHWMPRannInterval) || 5256 nla_put_u8(msg, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5257 cur_params.dot11MeshGateAnnouncementProtocol) || 5258 nla_put_u8(msg, NL80211_MESHCONF_FORWARDING, 5259 cur_params.dot11MeshForwarding) || 5260 nla_put_u32(msg, NL80211_MESHCONF_RSSI_THRESHOLD, 5261 cur_params.rssi_threshold) || 5262 nla_put_u32(msg, NL80211_MESHCONF_HT_OPMODE, 5263 cur_params.ht_opmode) || 5264 nla_put_u32(msg, NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5265 cur_params.dot11MeshHWMPactivePathToRootTimeout) || 5266 nla_put_u16(msg, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5267 cur_params.dot11MeshHWMProotInterval) || 5268 nla_put_u16(msg, NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5269 cur_params.dot11MeshHWMPconfirmationInterval) || 5270 nla_put_u32(msg, NL80211_MESHCONF_POWER_MODE, 5271 cur_params.power_mode) || 5272 nla_put_u16(msg, NL80211_MESHCONF_AWAKE_WINDOW, 5273 cur_params.dot11MeshAwakeWindowDuration) || 5274 nla_put_u32(msg, NL80211_MESHCONF_PLINK_TIMEOUT, 5275 cur_params.plink_timeout)) 5276 goto nla_put_failure; 5277 nla_nest_end(msg, pinfoattr); 5278 genlmsg_end(msg, hdr); 5279 return genlmsg_reply(msg, info); 5280 5281 nla_put_failure: 5282 genlmsg_cancel(msg, hdr); 5283 out: 5284 nlmsg_free(msg); 5285 return -ENOBUFS; 5286 } 5287 5288 static const struct nla_policy nl80211_meshconf_params_policy[NL80211_MESHCONF_ATTR_MAX+1] = { 5289 [NL80211_MESHCONF_RETRY_TIMEOUT] = { .type = NLA_U16 }, 5290 [NL80211_MESHCONF_CONFIRM_TIMEOUT] = { .type = NLA_U16 }, 5291 [NL80211_MESHCONF_HOLDING_TIMEOUT] = { .type = NLA_U16 }, 5292 [NL80211_MESHCONF_MAX_PEER_LINKS] = { .type = NLA_U16 }, 5293 [NL80211_MESHCONF_MAX_RETRIES] = { .type = NLA_U8 }, 5294 [NL80211_MESHCONF_TTL] = { .type = NLA_U8 }, 5295 [NL80211_MESHCONF_ELEMENT_TTL] = { .type = NLA_U8 }, 5296 [NL80211_MESHCONF_AUTO_OPEN_PLINKS] = { .type = NLA_U8 }, 5297 [NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR] = { .type = NLA_U32 }, 5298 [NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES] = { .type = NLA_U8 }, 5299 [NL80211_MESHCONF_PATH_REFRESH_TIME] = { .type = NLA_U32 }, 5300 [NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT] = { .type = NLA_U16 }, 5301 [NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT] = { .type = NLA_U32 }, 5302 [NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL] = { .type = NLA_U16 }, 5303 [NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL] = { .type = NLA_U16 }, 5304 [NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME] = { .type = NLA_U16 }, 5305 [NL80211_MESHCONF_HWMP_ROOTMODE] = { .type = NLA_U8 }, 5306 [NL80211_MESHCONF_HWMP_RANN_INTERVAL] = { .type = NLA_U16 }, 5307 [NL80211_MESHCONF_GATE_ANNOUNCEMENTS] = { .type = NLA_U8 }, 5308 [NL80211_MESHCONF_FORWARDING] = { .type = NLA_U8 }, 5309 [NL80211_MESHCONF_RSSI_THRESHOLD] = { .type = NLA_U32 }, 5310 [NL80211_MESHCONF_HT_OPMODE] = { .type = NLA_U16 }, 5311 [NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT] = { .type = NLA_U32 }, 5312 [NL80211_MESHCONF_HWMP_ROOT_INTERVAL] = { .type = NLA_U16 }, 5313 [NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL] = { .type = NLA_U16 }, 5314 [NL80211_MESHCONF_POWER_MODE] = { .type = NLA_U32 }, 5315 [NL80211_MESHCONF_AWAKE_WINDOW] = { .type = NLA_U16 }, 5316 [NL80211_MESHCONF_PLINK_TIMEOUT] = { .type = NLA_U32 }, 5317 }; 5318 5319 static const struct nla_policy 5320 nl80211_mesh_setup_params_policy[NL80211_MESH_SETUP_ATTR_MAX+1] = { 5321 [NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC] = { .type = NLA_U8 }, 5322 [NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL] = { .type = NLA_U8 }, 5323 [NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC] = { .type = NLA_U8 }, 5324 [NL80211_MESH_SETUP_USERSPACE_AUTH] = { .type = NLA_FLAG }, 5325 [NL80211_MESH_SETUP_AUTH_PROTOCOL] = { .type = NLA_U8 }, 5326 [NL80211_MESH_SETUP_USERSPACE_MPM] = { .type = NLA_FLAG }, 5327 [NL80211_MESH_SETUP_IE] = { .type = NLA_BINARY, 5328 .len = IEEE80211_MAX_DATA_LEN }, 5329 [NL80211_MESH_SETUP_USERSPACE_AMPE] = { .type = NLA_FLAG }, 5330 }; 5331 5332 static int nl80211_check_bool(const struct nlattr *nla, u8 min, u8 max, bool *out) 5333 { 5334 u8 val = nla_get_u8(nla); 5335 if (val < min || val > max) 5336 return -EINVAL; 5337 *out = val; 5338 return 0; 5339 } 5340 5341 static int nl80211_check_u8(const struct nlattr *nla, u8 min, u8 max, u8 *out) 5342 { 5343 u8 val = nla_get_u8(nla); 5344 if (val < min || val > max) 5345 return -EINVAL; 5346 *out = val; 5347 return 0; 5348 } 5349 5350 static int nl80211_check_u16(const struct nlattr *nla, u16 min, u16 max, u16 *out) 5351 { 5352 u16 val = nla_get_u16(nla); 5353 if (val < min || val > max) 5354 return -EINVAL; 5355 *out = val; 5356 return 0; 5357 } 5358 5359 static int nl80211_check_u32(const struct nlattr *nla, u32 min, u32 max, u32 *out) 5360 { 5361 u32 val = nla_get_u32(nla); 5362 if (val < min || val > max) 5363 return -EINVAL; 5364 *out = val; 5365 return 0; 5366 } 5367 5368 static int nl80211_check_s32(const struct nlattr *nla, s32 min, s32 max, s32 *out) 5369 { 5370 s32 val = nla_get_s32(nla); 5371 if (val < min || val > max) 5372 return -EINVAL; 5373 *out = val; 5374 return 0; 5375 } 5376 5377 static int nl80211_parse_mesh_config(struct genl_info *info, 5378 struct mesh_config *cfg, 5379 u32 *mask_out) 5380 { 5381 struct nlattr *tb[NL80211_MESHCONF_ATTR_MAX + 1]; 5382 u32 mask = 0; 5383 u16 ht_opmode; 5384 5385 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5386 do { \ 5387 if (tb[attr]) { \ 5388 if (fn(tb[attr], min, max, &cfg->param)) \ 5389 return -EINVAL; \ 5390 mask |= (1 << (attr - 1)); \ 5391 } \ 5392 } while (0) 5393 5394 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5395 return -EINVAL; 5396 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5397 info->attrs[NL80211_ATTR_MESH_CONFIG], 5398 nl80211_meshconf_params_policy)) 5399 return -EINVAL; 5400 5401 /* This makes sure that there aren't more than 32 mesh config 5402 * parameters (otherwise our bitfield scheme would not work.) */ 5403 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5404 5405 /* Fill in the params struct */ 5406 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5407 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5408 nl80211_check_u16); 5409 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5410 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5411 nl80211_check_u16); 5412 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5413 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5414 nl80211_check_u16); 5415 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5416 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5417 nl80211_check_u16); 5418 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5419 mask, NL80211_MESHCONF_MAX_RETRIES, 5420 nl80211_check_u8); 5421 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5422 mask, NL80211_MESHCONF_TTL, nl80211_check_u8); 5423 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5424 mask, NL80211_MESHCONF_ELEMENT_TTL, 5425 nl80211_check_u8); 5426 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5427 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5428 nl80211_check_bool); 5429 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5430 1, 255, mask, 5431 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5432 nl80211_check_u32); 5433 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5434 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5435 nl80211_check_u8); 5436 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5437 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5438 nl80211_check_u32); 5439 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5440 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5441 nl80211_check_u16); 5442 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5443 1, 65535, mask, 5444 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5445 nl80211_check_u32); 5446 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5447 1, 65535, mask, 5448 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5449 nl80211_check_u16); 5450 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5451 1, 65535, mask, 5452 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5453 nl80211_check_u16); 5454 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5455 dot11MeshHWMPnetDiameterTraversalTime, 5456 1, 65535, mask, 5457 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5458 nl80211_check_u16); 5459 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5460 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5461 nl80211_check_u8); 5462 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5463 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5464 nl80211_check_u16); 5465 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5466 dot11MeshGateAnnouncementProtocol, 0, 1, 5467 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5468 nl80211_check_bool); 5469 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5470 mask, NL80211_MESHCONF_FORWARDING, 5471 nl80211_check_bool); 5472 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5473 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5474 nl80211_check_s32); 5475 /* 5476 * Check HT operation mode based on 5477 * IEEE 802.11 2012 8.4.2.59 HT Operation element. 5478 */ 5479 if (tb[NL80211_MESHCONF_HT_OPMODE]) { 5480 ht_opmode = nla_get_u16(tb[NL80211_MESHCONF_HT_OPMODE]); 5481 5482 if (ht_opmode & ~(IEEE80211_HT_OP_MODE_PROTECTION | 5483 IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT | 5484 IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 5485 return -EINVAL; 5486 5487 if ((ht_opmode & IEEE80211_HT_OP_MODE_NON_GF_STA_PRSNT) && 5488 (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 5489 return -EINVAL; 5490 5491 switch (ht_opmode & IEEE80211_HT_OP_MODE_PROTECTION) { 5492 case IEEE80211_HT_OP_MODE_PROTECTION_NONE: 5493 case IEEE80211_HT_OP_MODE_PROTECTION_20MHZ: 5494 if (ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT) 5495 return -EINVAL; 5496 break; 5497 case IEEE80211_HT_OP_MODE_PROTECTION_NONMEMBER: 5498 case IEEE80211_HT_OP_MODE_PROTECTION_NONHT_MIXED: 5499 if (!(ht_opmode & IEEE80211_HT_OP_MODE_NON_HT_STA_PRSNT)) 5500 return -EINVAL; 5501 break; 5502 } 5503 cfg->ht_opmode = ht_opmode; 5504 } 5505 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5506 1, 65535, mask, 5507 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5508 nl80211_check_u32); 5509 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5510 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5511 nl80211_check_u16); 5512 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5513 dot11MeshHWMPconfirmationInterval, 5514 1, 65535, mask, 5515 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5516 nl80211_check_u16); 5517 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5518 NL80211_MESH_POWER_ACTIVE, 5519 NL80211_MESH_POWER_MAX, 5520 mask, NL80211_MESHCONF_POWER_MODE, 5521 nl80211_check_u32); 5522 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5523 0, 65535, mask, 5524 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16); 5525 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 5526 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5527 nl80211_check_u32); 5528 if (mask_out) 5529 *mask_out = mask; 5530 5531 return 0; 5532 5533 #undef FILL_IN_MESH_PARAM_IF_SET 5534 } 5535 5536 static int nl80211_parse_mesh_setup(struct genl_info *info, 5537 struct mesh_setup *setup) 5538 { 5539 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5540 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5541 5542 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5543 return -EINVAL; 5544 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5545 info->attrs[NL80211_ATTR_MESH_SETUP], 5546 nl80211_mesh_setup_params_policy)) 5547 return -EINVAL; 5548 5549 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5550 setup->sync_method = 5551 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5552 IEEE80211_SYNC_METHOD_VENDOR : 5553 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5554 5555 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5556 setup->path_sel_proto = 5557 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5558 IEEE80211_PATH_PROTOCOL_VENDOR : 5559 IEEE80211_PATH_PROTOCOL_HWMP; 5560 5561 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5562 setup->path_metric = 5563 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5564 IEEE80211_PATH_METRIC_VENDOR : 5565 IEEE80211_PATH_METRIC_AIRTIME; 5566 5567 if (tb[NL80211_MESH_SETUP_IE]) { 5568 struct nlattr *ieattr = 5569 tb[NL80211_MESH_SETUP_IE]; 5570 if (!is_valid_ie_attr(ieattr)) 5571 return -EINVAL; 5572 setup->ie = nla_data(ieattr); 5573 setup->ie_len = nla_len(ieattr); 5574 } 5575 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5576 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5577 return -EINVAL; 5578 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5579 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5580 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5581 if (setup->is_secure) 5582 setup->user_mpm = true; 5583 5584 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5585 if (!setup->user_mpm) 5586 return -EINVAL; 5587 setup->auth_id = 5588 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5589 } 5590 5591 return 0; 5592 } 5593 5594 static int nl80211_update_mesh_config(struct sk_buff *skb, 5595 struct genl_info *info) 5596 { 5597 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5598 struct net_device *dev = info->user_ptr[1]; 5599 struct wireless_dev *wdev = dev->ieee80211_ptr; 5600 struct mesh_config cfg; 5601 u32 mask; 5602 int err; 5603 5604 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5605 return -EOPNOTSUPP; 5606 5607 if (!rdev->ops->update_mesh_config) 5608 return -EOPNOTSUPP; 5609 5610 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5611 if (err) 5612 return err; 5613 5614 wdev_lock(wdev); 5615 if (!wdev->mesh_id_len) 5616 err = -ENOLINK; 5617 5618 if (!err) 5619 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5620 5621 wdev_unlock(wdev); 5622 5623 return err; 5624 } 5625 5626 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5627 struct sk_buff *msg) 5628 { 5629 struct nlattr *nl_reg_rules; 5630 unsigned int i; 5631 5632 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5633 (regdom->dfs_region && 5634 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5635 goto nla_put_failure; 5636 5637 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5638 if (!nl_reg_rules) 5639 goto nla_put_failure; 5640 5641 for (i = 0; i < regdom->n_reg_rules; i++) { 5642 struct nlattr *nl_reg_rule; 5643 const struct ieee80211_reg_rule *reg_rule; 5644 const struct ieee80211_freq_range *freq_range; 5645 const struct ieee80211_power_rule *power_rule; 5646 unsigned int max_bandwidth_khz; 5647 5648 reg_rule = ®dom->reg_rules[i]; 5649 freq_range = ®_rule->freq_range; 5650 power_rule = ®_rule->power_rule; 5651 5652 nl_reg_rule = nla_nest_start(msg, i); 5653 if (!nl_reg_rule) 5654 goto nla_put_failure; 5655 5656 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5657 if (!max_bandwidth_khz) 5658 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5659 reg_rule); 5660 5661 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5662 reg_rule->flags) || 5663 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5664 freq_range->start_freq_khz) || 5665 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5666 freq_range->end_freq_khz) || 5667 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5668 max_bandwidth_khz) || 5669 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5670 power_rule->max_antenna_gain) || 5671 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5672 power_rule->max_eirp) || 5673 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5674 reg_rule->dfs_cac_ms)) 5675 goto nla_put_failure; 5676 5677 nla_nest_end(msg, nl_reg_rule); 5678 } 5679 5680 nla_nest_end(msg, nl_reg_rules); 5681 return 0; 5682 5683 nla_put_failure: 5684 return -EMSGSIZE; 5685 } 5686 5687 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5688 { 5689 const struct ieee80211_regdomain *regdom = NULL; 5690 struct cfg80211_registered_device *rdev; 5691 struct wiphy *wiphy = NULL; 5692 struct sk_buff *msg; 5693 void *hdr; 5694 5695 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5696 if (!msg) 5697 return -ENOBUFS; 5698 5699 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5700 NL80211_CMD_GET_REG); 5701 if (!hdr) 5702 goto put_failure; 5703 5704 if (info->attrs[NL80211_ATTR_WIPHY]) { 5705 bool self_managed; 5706 5707 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5708 if (IS_ERR(rdev)) { 5709 nlmsg_free(msg); 5710 return PTR_ERR(rdev); 5711 } 5712 5713 wiphy = &rdev->wiphy; 5714 self_managed = wiphy->regulatory_flags & 5715 REGULATORY_WIPHY_SELF_MANAGED; 5716 regdom = get_wiphy_regdom(wiphy); 5717 5718 /* a self-managed-reg device must have a private regdom */ 5719 if (WARN_ON(!regdom && self_managed)) { 5720 nlmsg_free(msg); 5721 return -EINVAL; 5722 } 5723 5724 if (regdom && 5725 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5726 goto nla_put_failure; 5727 } 5728 5729 if (!wiphy && reg_last_request_cell_base() && 5730 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5731 NL80211_USER_REG_HINT_CELL_BASE)) 5732 goto nla_put_failure; 5733 5734 rcu_read_lock(); 5735 5736 if (!regdom) 5737 regdom = rcu_dereference(cfg80211_regdomain); 5738 5739 if (nl80211_put_regdom(regdom, msg)) 5740 goto nla_put_failure_rcu; 5741 5742 rcu_read_unlock(); 5743 5744 genlmsg_end(msg, hdr); 5745 return genlmsg_reply(msg, info); 5746 5747 nla_put_failure_rcu: 5748 rcu_read_unlock(); 5749 nla_put_failure: 5750 genlmsg_cancel(msg, hdr); 5751 put_failure: 5752 nlmsg_free(msg); 5753 return -EMSGSIZE; 5754 } 5755 5756 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5757 u32 seq, int flags, struct wiphy *wiphy, 5758 const struct ieee80211_regdomain *regdom) 5759 { 5760 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5761 NL80211_CMD_GET_REG); 5762 5763 if (!hdr) 5764 return -1; 5765 5766 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5767 5768 if (nl80211_put_regdom(regdom, msg)) 5769 goto nla_put_failure; 5770 5771 if (!wiphy && reg_last_request_cell_base() && 5772 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5773 NL80211_USER_REG_HINT_CELL_BASE)) 5774 goto nla_put_failure; 5775 5776 if (wiphy && 5777 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5778 goto nla_put_failure; 5779 5780 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5781 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5782 goto nla_put_failure; 5783 5784 genlmsg_end(msg, hdr); 5785 return 0; 5786 5787 nla_put_failure: 5788 genlmsg_cancel(msg, hdr); 5789 return -EMSGSIZE; 5790 } 5791 5792 static int nl80211_get_reg_dump(struct sk_buff *skb, 5793 struct netlink_callback *cb) 5794 { 5795 const struct ieee80211_regdomain *regdom = NULL; 5796 struct cfg80211_registered_device *rdev; 5797 int err, reg_idx, start = cb->args[2]; 5798 5799 rtnl_lock(); 5800 5801 if (cfg80211_regdomain && start == 0) { 5802 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5803 NLM_F_MULTI, NULL, 5804 rtnl_dereference(cfg80211_regdomain)); 5805 if (err < 0) 5806 goto out_err; 5807 } 5808 5809 /* the global regdom is idx 0 */ 5810 reg_idx = 1; 5811 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5812 regdom = get_wiphy_regdom(&rdev->wiphy); 5813 if (!regdom) 5814 continue; 5815 5816 if (++reg_idx <= start) 5817 continue; 5818 5819 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5820 NLM_F_MULTI, &rdev->wiphy, regdom); 5821 if (err < 0) { 5822 reg_idx--; 5823 break; 5824 } 5825 } 5826 5827 cb->args[2] = reg_idx; 5828 err = skb->len; 5829 out_err: 5830 rtnl_unlock(); 5831 return err; 5832 } 5833 5834 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 5835 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 5836 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5837 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5838 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5839 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5840 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5841 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5842 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 5843 }; 5844 5845 static int parse_reg_rule(struct nlattr *tb[], 5846 struct ieee80211_reg_rule *reg_rule) 5847 { 5848 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 5849 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 5850 5851 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 5852 return -EINVAL; 5853 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 5854 return -EINVAL; 5855 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 5856 return -EINVAL; 5857 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 5858 return -EINVAL; 5859 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 5860 return -EINVAL; 5861 5862 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 5863 5864 freq_range->start_freq_khz = 5865 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 5866 freq_range->end_freq_khz = 5867 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 5868 freq_range->max_bandwidth_khz = 5869 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 5870 5871 power_rule->max_eirp = 5872 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 5873 5874 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 5875 power_rule->max_antenna_gain = 5876 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 5877 5878 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 5879 reg_rule->dfs_cac_ms = 5880 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 5881 5882 return 0; 5883 } 5884 5885 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5886 { 5887 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5888 struct nlattr *nl_reg_rule; 5889 char *alpha2; 5890 int rem_reg_rules, r; 5891 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5892 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5893 struct ieee80211_regdomain *rd; 5894 5895 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5896 return -EINVAL; 5897 5898 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5899 return -EINVAL; 5900 5901 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5902 5903 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5904 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5905 5906 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5907 rem_reg_rules) { 5908 num_rules++; 5909 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5910 return -EINVAL; 5911 } 5912 5913 if (!reg_is_valid_request(alpha2)) 5914 return -EINVAL; 5915 5916 size_of_regd = sizeof(struct ieee80211_regdomain) + 5917 num_rules * sizeof(struct ieee80211_reg_rule); 5918 5919 rd = kzalloc(size_of_regd, GFP_KERNEL); 5920 if (!rd) 5921 return -ENOMEM; 5922 5923 rd->n_reg_rules = num_rules; 5924 rd->alpha2[0] = alpha2[0]; 5925 rd->alpha2[1] = alpha2[1]; 5926 5927 /* 5928 * Disable DFS master mode if the DFS region was 5929 * not supported or known on this kernel. 5930 */ 5931 if (reg_supported_dfs_region(dfs_region)) 5932 rd->dfs_region = dfs_region; 5933 5934 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5935 rem_reg_rules) { 5936 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5937 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5938 reg_rule_policy); 5939 if (r) 5940 goto bad_reg; 5941 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5942 if (r) 5943 goto bad_reg; 5944 5945 rule_idx++; 5946 5947 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5948 r = -EINVAL; 5949 goto bad_reg; 5950 } 5951 } 5952 5953 /* set_regdom takes ownership of rd */ 5954 return set_regdom(rd, REGD_SOURCE_CRDA); 5955 bad_reg: 5956 kfree(rd); 5957 return r; 5958 } 5959 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 5960 5961 static int validate_scan_freqs(struct nlattr *freqs) 5962 { 5963 struct nlattr *attr1, *attr2; 5964 int n_channels = 0, tmp1, tmp2; 5965 5966 nla_for_each_nested(attr1, freqs, tmp1) { 5967 n_channels++; 5968 /* 5969 * Some hardware has a limited channel list for 5970 * scanning, and it is pretty much nonsensical 5971 * to scan for a channel twice, so disallow that 5972 * and don't require drivers to check that the 5973 * channel list they get isn't longer than what 5974 * they can scan, as long as they can scan all 5975 * the channels they registered at once. 5976 */ 5977 nla_for_each_nested(attr2, freqs, tmp2) 5978 if (attr1 != attr2 && 5979 nla_get_u32(attr1) == nla_get_u32(attr2)) 5980 return 0; 5981 } 5982 5983 return n_channels; 5984 } 5985 5986 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 5987 { 5988 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 5989 } 5990 5991 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 5992 struct cfg80211_bss_selection *bss_select) 5993 { 5994 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 5995 struct nlattr *nest; 5996 int err; 5997 bool found = false; 5998 int i; 5999 6000 /* only process one nested attribute */ 6001 nest = nla_data(nla); 6002 if (!nla_ok(nest, nla_len(nest))) 6003 return -EINVAL; 6004 6005 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest), 6006 nla_len(nest), nl80211_bss_select_policy); 6007 if (err) 6008 return err; 6009 6010 /* only one attribute may be given */ 6011 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 6012 if (attr[i]) { 6013 if (found) 6014 return -EINVAL; 6015 found = true; 6016 } 6017 } 6018 6019 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 6020 6021 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 6022 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 6023 6024 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 6025 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 6026 bss_select->param.band_pref = 6027 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6028 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6029 return -EINVAL; 6030 } 6031 6032 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6033 struct nl80211_bss_select_rssi_adjust *adj_param; 6034 6035 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6036 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6037 bss_select->param.adjust.band = adj_param->band; 6038 bss_select->param.adjust.delta = adj_param->delta; 6039 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6040 return -EINVAL; 6041 } 6042 6043 /* user-space did not provide behaviour attribute */ 6044 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6045 return -EINVAL; 6046 6047 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6048 return -EINVAL; 6049 6050 return 0; 6051 } 6052 6053 static int nl80211_parse_random_mac(struct nlattr **attrs, 6054 u8 *mac_addr, u8 *mac_addr_mask) 6055 { 6056 int i; 6057 6058 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6059 eth_zero_addr(mac_addr); 6060 eth_zero_addr(mac_addr_mask); 6061 mac_addr[0] = 0x2; 6062 mac_addr_mask[0] = 0x3; 6063 6064 return 0; 6065 } 6066 6067 /* need both or none */ 6068 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6069 return -EINVAL; 6070 6071 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6072 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6073 6074 /* don't allow or configure an mcast address */ 6075 if (!is_multicast_ether_addr(mac_addr_mask) || 6076 is_multicast_ether_addr(mac_addr)) 6077 return -EINVAL; 6078 6079 /* 6080 * allow users to pass a MAC address that has bits set outside 6081 * of the mask, but don't bother drivers with having to deal 6082 * with such bits 6083 */ 6084 for (i = 0; i < ETH_ALEN; i++) 6085 mac_addr[i] &= mac_addr_mask[i]; 6086 6087 return 0; 6088 } 6089 6090 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 6091 { 6092 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6093 struct wireless_dev *wdev = info->user_ptr[1]; 6094 struct cfg80211_scan_request *request; 6095 struct nlattr *attr; 6096 struct wiphy *wiphy; 6097 int err, tmp, n_ssids = 0, n_channels, i; 6098 size_t ie_len; 6099 6100 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6101 return -EINVAL; 6102 6103 wiphy = &rdev->wiphy; 6104 6105 if (!rdev->ops->scan) 6106 return -EOPNOTSUPP; 6107 6108 if (rdev->scan_req || rdev->scan_msg) { 6109 err = -EBUSY; 6110 goto unlock; 6111 } 6112 6113 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6114 n_channels = validate_scan_freqs( 6115 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6116 if (!n_channels) { 6117 err = -EINVAL; 6118 goto unlock; 6119 } 6120 } else { 6121 n_channels = ieee80211_get_num_supported_channels(wiphy); 6122 } 6123 6124 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 6125 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 6126 n_ssids++; 6127 6128 if (n_ssids > wiphy->max_scan_ssids) { 6129 err = -EINVAL; 6130 goto unlock; 6131 } 6132 6133 if (info->attrs[NL80211_ATTR_IE]) 6134 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6135 else 6136 ie_len = 0; 6137 6138 if (ie_len > wiphy->max_scan_ie_len) { 6139 err = -EINVAL; 6140 goto unlock; 6141 } 6142 6143 request = kzalloc(sizeof(*request) 6144 + sizeof(*request->ssids) * n_ssids 6145 + sizeof(*request->channels) * n_channels 6146 + ie_len, GFP_KERNEL); 6147 if (!request) { 6148 err = -ENOMEM; 6149 goto unlock; 6150 } 6151 6152 if (n_ssids) 6153 request->ssids = (void *)&request->channels[n_channels]; 6154 request->n_ssids = n_ssids; 6155 if (ie_len) { 6156 if (n_ssids) 6157 request->ie = (void *)(request->ssids + n_ssids); 6158 else 6159 request->ie = (void *)(request->channels + n_channels); 6160 } 6161 6162 i = 0; 6163 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6164 /* user specified, bail out if channel not found */ 6165 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 6166 struct ieee80211_channel *chan; 6167 6168 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6169 6170 if (!chan) { 6171 err = -EINVAL; 6172 goto out_free; 6173 } 6174 6175 /* ignore disabled channels */ 6176 if (chan->flags & IEEE80211_CHAN_DISABLED) 6177 continue; 6178 6179 request->channels[i] = chan; 6180 i++; 6181 } 6182 } else { 6183 enum nl80211_band band; 6184 6185 /* all channels */ 6186 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6187 int j; 6188 6189 if (!wiphy->bands[band]) 6190 continue; 6191 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6192 struct ieee80211_channel *chan; 6193 6194 chan = &wiphy->bands[band]->channels[j]; 6195 6196 if (chan->flags & IEEE80211_CHAN_DISABLED) 6197 continue; 6198 6199 request->channels[i] = chan; 6200 i++; 6201 } 6202 } 6203 } 6204 6205 if (!i) { 6206 err = -EINVAL; 6207 goto out_free; 6208 } 6209 6210 request->n_channels = i; 6211 6212 i = 0; 6213 if (n_ssids) { 6214 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 6215 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6216 err = -EINVAL; 6217 goto out_free; 6218 } 6219 request->ssids[i].ssid_len = nla_len(attr); 6220 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 6221 i++; 6222 } 6223 } 6224 6225 if (info->attrs[NL80211_ATTR_IE]) { 6226 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6227 memcpy((void *)request->ie, 6228 nla_data(info->attrs[NL80211_ATTR_IE]), 6229 request->ie_len); 6230 } 6231 6232 for (i = 0; i < NUM_NL80211_BANDS; i++) 6233 if (wiphy->bands[i]) 6234 request->rates[i] = 6235 (1 << wiphy->bands[i]->n_bitrates) - 1; 6236 6237 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 6238 nla_for_each_nested(attr, 6239 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 6240 tmp) { 6241 enum nl80211_band band = nla_type(attr); 6242 6243 if (band < 0 || band >= NUM_NL80211_BANDS) { 6244 err = -EINVAL; 6245 goto out_free; 6246 } 6247 6248 if (!wiphy->bands[band]) 6249 continue; 6250 6251 err = ieee80211_get_ratemask(wiphy->bands[band], 6252 nla_data(attr), 6253 nla_len(attr), 6254 &request->rates[band]); 6255 if (err) 6256 goto out_free; 6257 } 6258 } 6259 6260 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 6261 if (!wiphy_ext_feature_isset(wiphy, 6262 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 6263 err = -EOPNOTSUPP; 6264 goto out_free; 6265 } 6266 6267 request->duration = 6268 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 6269 request->duration_mandatory = 6270 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 6271 } 6272 6273 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 6274 request->flags = nla_get_u32( 6275 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 6276 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6277 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6278 err = -EOPNOTSUPP; 6279 goto out_free; 6280 } 6281 6282 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6283 if (!(wiphy->features & 6284 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 6285 err = -EOPNOTSUPP; 6286 goto out_free; 6287 } 6288 6289 if (wdev->current_bss) { 6290 err = -EOPNOTSUPP; 6291 goto out_free; 6292 } 6293 6294 err = nl80211_parse_random_mac(info->attrs, 6295 request->mac_addr, 6296 request->mac_addr_mask); 6297 if (err) 6298 goto out_free; 6299 } 6300 } 6301 6302 request->no_cck = 6303 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 6304 6305 if (info->attrs[NL80211_ATTR_MAC]) 6306 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 6307 ETH_ALEN); 6308 else 6309 eth_broadcast_addr(request->bssid); 6310 6311 request->wdev = wdev; 6312 request->wiphy = &rdev->wiphy; 6313 request->scan_start = jiffies; 6314 6315 rdev->scan_req = request; 6316 err = rdev_scan(rdev, request); 6317 6318 if (!err) { 6319 nl80211_send_scan_start(rdev, wdev); 6320 if (wdev->netdev) 6321 dev_hold(wdev->netdev); 6322 } else { 6323 out_free: 6324 rdev->scan_req = NULL; 6325 kfree(request); 6326 } 6327 6328 unlock: 6329 return err; 6330 } 6331 6332 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 6333 { 6334 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6335 struct wireless_dev *wdev = info->user_ptr[1]; 6336 6337 if (!rdev->ops->abort_scan) 6338 return -EOPNOTSUPP; 6339 6340 if (rdev->scan_msg) 6341 return 0; 6342 6343 if (!rdev->scan_req) 6344 return -ENOENT; 6345 6346 rdev_abort_scan(rdev, wdev); 6347 return 0; 6348 } 6349 6350 static int 6351 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 6352 struct cfg80211_sched_scan_request *request, 6353 struct nlattr **attrs) 6354 { 6355 int tmp, err, i = 0; 6356 struct nlattr *attr; 6357 6358 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6359 u32 interval; 6360 6361 /* 6362 * If scan plans are not specified, 6363 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this 6364 * case one scan plan will be set with the specified scan 6365 * interval and infinite number of iterations. 6366 */ 6367 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6368 return -EINVAL; 6369 6370 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 6371 if (!interval) 6372 return -EINVAL; 6373 6374 request->scan_plans[0].interval = 6375 DIV_ROUND_UP(interval, MSEC_PER_SEC); 6376 if (!request->scan_plans[0].interval) 6377 return -EINVAL; 6378 6379 if (request->scan_plans[0].interval > 6380 wiphy->max_sched_scan_plan_interval) 6381 request->scan_plans[0].interval = 6382 wiphy->max_sched_scan_plan_interval; 6383 6384 return 0; 6385 } 6386 6387 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 6388 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 6389 6390 if (WARN_ON(i >= n_plans)) 6391 return -EINVAL; 6392 6393 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX, 6394 nla_data(attr), nla_len(attr), 6395 nl80211_plan_policy); 6396 if (err) 6397 return err; 6398 6399 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 6400 return -EINVAL; 6401 6402 request->scan_plans[i].interval = 6403 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 6404 if (!request->scan_plans[i].interval || 6405 request->scan_plans[i].interval > 6406 wiphy->max_sched_scan_plan_interval) 6407 return -EINVAL; 6408 6409 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 6410 request->scan_plans[i].iterations = 6411 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 6412 if (!request->scan_plans[i].iterations || 6413 (request->scan_plans[i].iterations > 6414 wiphy->max_sched_scan_plan_iterations)) 6415 return -EINVAL; 6416 } else if (i < n_plans - 1) { 6417 /* 6418 * All scan plans but the last one must specify 6419 * a finite number of iterations 6420 */ 6421 return -EINVAL; 6422 } 6423 6424 i++; 6425 } 6426 6427 /* 6428 * The last scan plan must not specify the number of 6429 * iterations, it is supposed to run infinitely 6430 */ 6431 if (request->scan_plans[n_plans - 1].iterations) 6432 return -EINVAL; 6433 6434 return 0; 6435 } 6436 6437 static struct cfg80211_sched_scan_request * 6438 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 6439 struct nlattr **attrs) 6440 { 6441 struct cfg80211_sched_scan_request *request; 6442 struct nlattr *attr; 6443 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 6444 enum nl80211_band band; 6445 size_t ie_len; 6446 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 6447 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 6448 6449 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 6450 return ERR_PTR(-EINVAL); 6451 6452 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6453 n_channels = validate_scan_freqs( 6454 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6455 if (!n_channels) 6456 return ERR_PTR(-EINVAL); 6457 } else { 6458 n_channels = ieee80211_get_num_supported_channels(wiphy); 6459 } 6460 6461 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 6462 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6463 tmp) 6464 n_ssids++; 6465 6466 if (n_ssids > wiphy->max_sched_scan_ssids) 6467 return ERR_PTR(-EINVAL); 6468 6469 /* 6470 * First, count the number of 'real' matchsets. Due to an issue with 6471 * the old implementation, matchsets containing only the RSSI attribute 6472 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 6473 * RSSI for all matchsets, rather than their own matchset for reporting 6474 * all APs with a strong RSSI. This is needed to be compatible with 6475 * older userspace that treated a matchset with only the RSSI as the 6476 * global RSSI for all other matchsets - if there are other matchsets. 6477 */ 6478 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6479 nla_for_each_nested(attr, 6480 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6481 tmp) { 6482 struct nlattr *rssi; 6483 6484 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6485 nla_data(attr), nla_len(attr), 6486 nl80211_match_policy); 6487 if (err) 6488 return ERR_PTR(err); 6489 /* add other standalone attributes here */ 6490 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6491 n_match_sets++; 6492 continue; 6493 } 6494 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6495 if (rssi) 6496 default_match_rssi = nla_get_s32(rssi); 6497 } 6498 } 6499 6500 /* However, if there's no other matchset, add the RSSI one */ 6501 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6502 n_match_sets = 1; 6503 6504 if (n_match_sets > wiphy->max_match_sets) 6505 return ERR_PTR(-EINVAL); 6506 6507 if (attrs[NL80211_ATTR_IE]) 6508 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6509 else 6510 ie_len = 0; 6511 6512 if (ie_len > wiphy->max_sched_scan_ie_len) 6513 return ERR_PTR(-EINVAL); 6514 6515 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6516 /* 6517 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 6518 * each scan plan already specifies its own interval 6519 */ 6520 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6521 return ERR_PTR(-EINVAL); 6522 6523 nla_for_each_nested(attr, 6524 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 6525 n_plans++; 6526 } else { 6527 /* 6528 * The scan interval attribute is kept for backward 6529 * compatibility. If no scan plans are specified and sched scan 6530 * interval is specified, one scan plan will be set with this 6531 * scan interval and infinite number of iterations. 6532 */ 6533 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6534 return ERR_PTR(-EINVAL); 6535 6536 n_plans = 1; 6537 } 6538 6539 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 6540 return ERR_PTR(-EINVAL); 6541 6542 request = kzalloc(sizeof(*request) 6543 + sizeof(*request->ssids) * n_ssids 6544 + sizeof(*request->match_sets) * n_match_sets 6545 + sizeof(*request->scan_plans) * n_plans 6546 + sizeof(*request->channels) * n_channels 6547 + ie_len, GFP_KERNEL); 6548 if (!request) 6549 return ERR_PTR(-ENOMEM); 6550 6551 if (n_ssids) 6552 request->ssids = (void *)&request->channels[n_channels]; 6553 request->n_ssids = n_ssids; 6554 if (ie_len) { 6555 if (n_ssids) 6556 request->ie = (void *)(request->ssids + n_ssids); 6557 else 6558 request->ie = (void *)(request->channels + n_channels); 6559 } 6560 6561 if (n_match_sets) { 6562 if (request->ie) 6563 request->match_sets = (void *)(request->ie + ie_len); 6564 else if (n_ssids) 6565 request->match_sets = 6566 (void *)(request->ssids + n_ssids); 6567 else 6568 request->match_sets = 6569 (void *)(request->channels + n_channels); 6570 } 6571 request->n_match_sets = n_match_sets; 6572 6573 if (n_match_sets) 6574 request->scan_plans = (void *)(request->match_sets + 6575 n_match_sets); 6576 else if (request->ie) 6577 request->scan_plans = (void *)(request->ie + ie_len); 6578 else if (n_ssids) 6579 request->scan_plans = (void *)(request->ssids + n_ssids); 6580 else 6581 request->scan_plans = (void *)(request->channels + n_channels); 6582 6583 request->n_scan_plans = n_plans; 6584 6585 i = 0; 6586 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6587 /* user specified, bail out if channel not found */ 6588 nla_for_each_nested(attr, 6589 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6590 tmp) { 6591 struct ieee80211_channel *chan; 6592 6593 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6594 6595 if (!chan) { 6596 err = -EINVAL; 6597 goto out_free; 6598 } 6599 6600 /* ignore disabled channels */ 6601 if (chan->flags & IEEE80211_CHAN_DISABLED) 6602 continue; 6603 6604 request->channels[i] = chan; 6605 i++; 6606 } 6607 } else { 6608 /* all channels */ 6609 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6610 int j; 6611 6612 if (!wiphy->bands[band]) 6613 continue; 6614 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6615 struct ieee80211_channel *chan; 6616 6617 chan = &wiphy->bands[band]->channels[j]; 6618 6619 if (chan->flags & IEEE80211_CHAN_DISABLED) 6620 continue; 6621 6622 request->channels[i] = chan; 6623 i++; 6624 } 6625 } 6626 } 6627 6628 if (!i) { 6629 err = -EINVAL; 6630 goto out_free; 6631 } 6632 6633 request->n_channels = i; 6634 6635 i = 0; 6636 if (n_ssids) { 6637 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6638 tmp) { 6639 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6640 err = -EINVAL; 6641 goto out_free; 6642 } 6643 request->ssids[i].ssid_len = nla_len(attr); 6644 memcpy(request->ssids[i].ssid, nla_data(attr), 6645 nla_len(attr)); 6646 i++; 6647 } 6648 } 6649 6650 i = 0; 6651 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6652 nla_for_each_nested(attr, 6653 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6654 tmp) { 6655 struct nlattr *ssid, *rssi; 6656 6657 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6658 nla_data(attr), nla_len(attr), 6659 nl80211_match_policy); 6660 if (err) 6661 goto out_free; 6662 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6663 if (ssid) { 6664 if (WARN_ON(i >= n_match_sets)) { 6665 /* this indicates a programming error, 6666 * the loop above should have verified 6667 * things properly 6668 */ 6669 err = -EINVAL; 6670 goto out_free; 6671 } 6672 6673 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6674 err = -EINVAL; 6675 goto out_free; 6676 } 6677 memcpy(request->match_sets[i].ssid.ssid, 6678 nla_data(ssid), nla_len(ssid)); 6679 request->match_sets[i].ssid.ssid_len = 6680 nla_len(ssid); 6681 /* special attribute - old implementation w/a */ 6682 request->match_sets[i].rssi_thold = 6683 default_match_rssi; 6684 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6685 if (rssi) 6686 request->match_sets[i].rssi_thold = 6687 nla_get_s32(rssi); 6688 } 6689 i++; 6690 } 6691 6692 /* there was no other matchset, so the RSSI one is alone */ 6693 if (i == 0 && n_match_sets) 6694 request->match_sets[0].rssi_thold = default_match_rssi; 6695 6696 request->min_rssi_thold = INT_MAX; 6697 for (i = 0; i < n_match_sets; i++) 6698 request->min_rssi_thold = 6699 min(request->match_sets[i].rssi_thold, 6700 request->min_rssi_thold); 6701 } else { 6702 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6703 } 6704 6705 if (ie_len) { 6706 request->ie_len = ie_len; 6707 memcpy((void *)request->ie, 6708 nla_data(attrs[NL80211_ATTR_IE]), 6709 request->ie_len); 6710 } 6711 6712 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6713 request->flags = nla_get_u32( 6714 attrs[NL80211_ATTR_SCAN_FLAGS]); 6715 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6716 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6717 err = -EOPNOTSUPP; 6718 goto out_free; 6719 } 6720 6721 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6722 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6723 6724 if (!wdev) /* must be net-detect */ 6725 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6726 6727 if (!(wiphy->features & flg)) { 6728 err = -EOPNOTSUPP; 6729 goto out_free; 6730 } 6731 6732 if (wdev && wdev->current_bss) { 6733 err = -EOPNOTSUPP; 6734 goto out_free; 6735 } 6736 6737 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6738 request->mac_addr_mask); 6739 if (err) 6740 goto out_free; 6741 } 6742 } 6743 6744 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6745 request->delay = 6746 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6747 6748 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 6749 if (err) 6750 goto out_free; 6751 6752 request->scan_start = jiffies; 6753 6754 return request; 6755 6756 out_free: 6757 kfree(request); 6758 return ERR_PTR(err); 6759 } 6760 6761 static int nl80211_start_sched_scan(struct sk_buff *skb, 6762 struct genl_info *info) 6763 { 6764 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6765 struct net_device *dev = info->user_ptr[1]; 6766 struct wireless_dev *wdev = dev->ieee80211_ptr; 6767 struct cfg80211_sched_scan_request *sched_scan_req; 6768 int err; 6769 6770 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6771 !rdev->ops->sched_scan_start) 6772 return -EOPNOTSUPP; 6773 6774 if (rdev->sched_scan_req) 6775 return -EINPROGRESS; 6776 6777 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6778 info->attrs); 6779 6780 err = PTR_ERR_OR_ZERO(sched_scan_req); 6781 if (err) 6782 goto out_err; 6783 6784 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6785 if (err) 6786 goto out_free; 6787 6788 sched_scan_req->dev = dev; 6789 sched_scan_req->wiphy = &rdev->wiphy; 6790 6791 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6792 sched_scan_req->owner_nlportid = info->snd_portid; 6793 6794 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6795 6796 nl80211_send_sched_scan(rdev, dev, 6797 NL80211_CMD_START_SCHED_SCAN); 6798 return 0; 6799 6800 out_free: 6801 kfree(sched_scan_req); 6802 out_err: 6803 return err; 6804 } 6805 6806 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6807 struct genl_info *info) 6808 { 6809 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6810 6811 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6812 !rdev->ops->sched_scan_stop) 6813 return -EOPNOTSUPP; 6814 6815 return __cfg80211_stop_sched_scan(rdev, false); 6816 } 6817 6818 static int nl80211_start_radar_detection(struct sk_buff *skb, 6819 struct genl_info *info) 6820 { 6821 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6822 struct net_device *dev = info->user_ptr[1]; 6823 struct wireless_dev *wdev = dev->ieee80211_ptr; 6824 struct cfg80211_chan_def chandef; 6825 enum nl80211_dfs_regions dfs_region; 6826 unsigned int cac_time_ms; 6827 int err; 6828 6829 dfs_region = reg_get_dfs_region(wdev->wiphy); 6830 if (dfs_region == NL80211_DFS_UNSET) 6831 return -EINVAL; 6832 6833 err = nl80211_parse_chandef(rdev, info, &chandef); 6834 if (err) 6835 return err; 6836 6837 if (netif_carrier_ok(dev)) 6838 return -EBUSY; 6839 6840 if (wdev->cac_started) 6841 return -EBUSY; 6842 6843 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6844 wdev->iftype); 6845 if (err < 0) 6846 return err; 6847 6848 if (err == 0) 6849 return -EINVAL; 6850 6851 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6852 return -EINVAL; 6853 6854 if (!rdev->ops->start_radar_detection) 6855 return -EOPNOTSUPP; 6856 6857 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6858 if (WARN_ON(!cac_time_ms)) 6859 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6860 6861 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 6862 if (!err) { 6863 wdev->chandef = chandef; 6864 wdev->cac_started = true; 6865 wdev->cac_start_time = jiffies; 6866 wdev->cac_time_ms = cac_time_ms; 6867 } 6868 return err; 6869 } 6870 6871 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6872 { 6873 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6874 struct net_device *dev = info->user_ptr[1]; 6875 struct wireless_dev *wdev = dev->ieee80211_ptr; 6876 struct cfg80211_csa_settings params; 6877 /* csa_attrs is defined static to avoid waste of stack size - this 6878 * function is called under RTNL lock, so this should not be a problem. 6879 */ 6880 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6881 int err; 6882 bool need_new_beacon = false; 6883 int len, i; 6884 u32 cs_count; 6885 6886 if (!rdev->ops->channel_switch || 6887 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6888 return -EOPNOTSUPP; 6889 6890 switch (dev->ieee80211_ptr->iftype) { 6891 case NL80211_IFTYPE_AP: 6892 case NL80211_IFTYPE_P2P_GO: 6893 need_new_beacon = true; 6894 6895 /* useless if AP is not running */ 6896 if (!wdev->beacon_interval) 6897 return -ENOTCONN; 6898 break; 6899 case NL80211_IFTYPE_ADHOC: 6900 if (!wdev->ssid_len) 6901 return -ENOTCONN; 6902 break; 6903 case NL80211_IFTYPE_MESH_POINT: 6904 if (!wdev->mesh_id_len) 6905 return -ENOTCONN; 6906 break; 6907 default: 6908 return -EOPNOTSUPP; 6909 } 6910 6911 memset(¶ms, 0, sizeof(params)); 6912 6913 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6914 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6915 return -EINVAL; 6916 6917 /* only important for AP, IBSS and mesh create IEs internally */ 6918 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6919 return -EINVAL; 6920 6921 /* Even though the attribute is u32, the specification says 6922 * u8, so let's make sure we don't overflow. 6923 */ 6924 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6925 if (cs_count > 255) 6926 return -EINVAL; 6927 6928 params.count = cs_count; 6929 6930 if (!need_new_beacon) 6931 goto skip_beacons; 6932 6933 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6934 if (err) 6935 return err; 6936 6937 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6938 info->attrs[NL80211_ATTR_CSA_IES], 6939 nl80211_policy); 6940 if (err) 6941 return err; 6942 6943 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6944 if (err) 6945 return err; 6946 6947 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6948 return -EINVAL; 6949 6950 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6951 if (!len || (len % sizeof(u16))) 6952 return -EINVAL; 6953 6954 params.n_counter_offsets_beacon = len / sizeof(u16); 6955 if (rdev->wiphy.max_num_csa_counters && 6956 (params.n_counter_offsets_beacon > 6957 rdev->wiphy.max_num_csa_counters)) 6958 return -EINVAL; 6959 6960 params.counter_offsets_beacon = 6961 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6962 6963 /* sanity checks - counters should fit and be the same */ 6964 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6965 u16 offset = params.counter_offsets_beacon[i]; 6966 6967 if (offset >= params.beacon_csa.tail_len) 6968 return -EINVAL; 6969 6970 if (params.beacon_csa.tail[offset] != params.count) 6971 return -EINVAL; 6972 } 6973 6974 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6975 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6976 if (!len || (len % sizeof(u16))) 6977 return -EINVAL; 6978 6979 params.n_counter_offsets_presp = len / sizeof(u16); 6980 if (rdev->wiphy.max_num_csa_counters && 6981 (params.n_counter_offsets_presp > 6982 rdev->wiphy.max_num_csa_counters)) 6983 return -EINVAL; 6984 6985 params.counter_offsets_presp = 6986 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6987 6988 /* sanity checks - counters should fit and be the same */ 6989 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6990 u16 offset = params.counter_offsets_presp[i]; 6991 6992 if (offset >= params.beacon_csa.probe_resp_len) 6993 return -EINVAL; 6994 6995 if (params.beacon_csa.probe_resp[offset] != 6996 params.count) 6997 return -EINVAL; 6998 } 6999 } 7000 7001 skip_beacons: 7002 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 7003 if (err) 7004 return err; 7005 7006 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 7007 wdev->iftype)) 7008 return -EINVAL; 7009 7010 err = cfg80211_chandef_dfs_required(wdev->wiphy, 7011 ¶ms.chandef, 7012 wdev->iftype); 7013 if (err < 0) 7014 return err; 7015 7016 if (err > 0) 7017 params.radar_required = true; 7018 7019 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 7020 params.block_tx = true; 7021 7022 wdev_lock(wdev); 7023 err = rdev_channel_switch(rdev, dev, ¶ms); 7024 wdev_unlock(wdev); 7025 7026 return err; 7027 } 7028 7029 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 7030 u32 seq, int flags, 7031 struct cfg80211_registered_device *rdev, 7032 struct wireless_dev *wdev, 7033 struct cfg80211_internal_bss *intbss) 7034 { 7035 struct cfg80211_bss *res = &intbss->pub; 7036 const struct cfg80211_bss_ies *ies; 7037 void *hdr; 7038 struct nlattr *bss; 7039 7040 ASSERT_WDEV_LOCK(wdev); 7041 7042 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 7043 NL80211_CMD_NEW_SCAN_RESULTS); 7044 if (!hdr) 7045 return -1; 7046 7047 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 7048 7049 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 7050 goto nla_put_failure; 7051 if (wdev->netdev && 7052 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 7053 goto nla_put_failure; 7054 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 7055 NL80211_ATTR_PAD)) 7056 goto nla_put_failure; 7057 7058 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 7059 if (!bss) 7060 goto nla_put_failure; 7061 if ((!is_zero_ether_addr(res->bssid) && 7062 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 7063 goto nla_put_failure; 7064 7065 rcu_read_lock(); 7066 /* indicate whether we have probe response data or not */ 7067 if (rcu_access_pointer(res->proberesp_ies) && 7068 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 7069 goto fail_unlock_rcu; 7070 7071 /* this pointer prefers to be pointed to probe response data 7072 * but is always valid 7073 */ 7074 ies = rcu_dereference(res->ies); 7075 if (ies) { 7076 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 7077 NL80211_BSS_PAD)) 7078 goto fail_unlock_rcu; 7079 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 7080 ies->len, ies->data)) 7081 goto fail_unlock_rcu; 7082 } 7083 7084 /* and this pointer is always (unless driver didn't know) beacon data */ 7085 ies = rcu_dereference(res->beacon_ies); 7086 if (ies && ies->from_beacon) { 7087 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 7088 NL80211_BSS_PAD)) 7089 goto fail_unlock_rcu; 7090 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 7091 ies->len, ies->data)) 7092 goto fail_unlock_rcu; 7093 } 7094 rcu_read_unlock(); 7095 7096 if (res->beacon_interval && 7097 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 7098 goto nla_put_failure; 7099 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 7100 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 7101 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 7102 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 7103 jiffies_to_msecs(jiffies - intbss->ts))) 7104 goto nla_put_failure; 7105 7106 if (intbss->parent_tsf && 7107 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 7108 intbss->parent_tsf, NL80211_BSS_PAD) || 7109 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 7110 intbss->parent_bssid))) 7111 goto nla_put_failure; 7112 7113 if (intbss->ts_boottime && 7114 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 7115 intbss->ts_boottime, NL80211_BSS_PAD)) 7116 goto nla_put_failure; 7117 7118 switch (rdev->wiphy.signal_type) { 7119 case CFG80211_SIGNAL_TYPE_MBM: 7120 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 7121 goto nla_put_failure; 7122 break; 7123 case CFG80211_SIGNAL_TYPE_UNSPEC: 7124 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 7125 goto nla_put_failure; 7126 break; 7127 default: 7128 break; 7129 } 7130 7131 switch (wdev->iftype) { 7132 case NL80211_IFTYPE_P2P_CLIENT: 7133 case NL80211_IFTYPE_STATION: 7134 if (intbss == wdev->current_bss && 7135 nla_put_u32(msg, NL80211_BSS_STATUS, 7136 NL80211_BSS_STATUS_ASSOCIATED)) 7137 goto nla_put_failure; 7138 break; 7139 case NL80211_IFTYPE_ADHOC: 7140 if (intbss == wdev->current_bss && 7141 nla_put_u32(msg, NL80211_BSS_STATUS, 7142 NL80211_BSS_STATUS_IBSS_JOINED)) 7143 goto nla_put_failure; 7144 break; 7145 default: 7146 break; 7147 } 7148 7149 nla_nest_end(msg, bss); 7150 7151 genlmsg_end(msg, hdr); 7152 return 0; 7153 7154 fail_unlock_rcu: 7155 rcu_read_unlock(); 7156 nla_put_failure: 7157 genlmsg_cancel(msg, hdr); 7158 return -EMSGSIZE; 7159 } 7160 7161 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 7162 { 7163 struct cfg80211_registered_device *rdev; 7164 struct cfg80211_internal_bss *scan; 7165 struct wireless_dev *wdev; 7166 int start = cb->args[2], idx = 0; 7167 int err; 7168 7169 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7170 if (err) 7171 return err; 7172 7173 wdev_lock(wdev); 7174 spin_lock_bh(&rdev->bss_lock); 7175 cfg80211_bss_expire(rdev); 7176 7177 cb->seq = rdev->bss_generation; 7178 7179 list_for_each_entry(scan, &rdev->bss_list, list) { 7180 if (++idx <= start) 7181 continue; 7182 if (nl80211_send_bss(skb, cb, 7183 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7184 rdev, wdev, scan) < 0) { 7185 idx--; 7186 break; 7187 } 7188 } 7189 7190 spin_unlock_bh(&rdev->bss_lock); 7191 wdev_unlock(wdev); 7192 7193 cb->args[2] = idx; 7194 nl80211_finish_wdev_dump(rdev); 7195 7196 return skb->len; 7197 } 7198 7199 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 7200 int flags, struct net_device *dev, 7201 bool allow_radio_stats, 7202 struct survey_info *survey) 7203 { 7204 void *hdr; 7205 struct nlattr *infoattr; 7206 7207 /* skip radio stats if userspace didn't request them */ 7208 if (!survey->channel && !allow_radio_stats) 7209 return 0; 7210 7211 hdr = nl80211hdr_put(msg, portid, seq, flags, 7212 NL80211_CMD_NEW_SURVEY_RESULTS); 7213 if (!hdr) 7214 return -ENOMEM; 7215 7216 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 7217 goto nla_put_failure; 7218 7219 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 7220 if (!infoattr) 7221 goto nla_put_failure; 7222 7223 if (survey->channel && 7224 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 7225 survey->channel->center_freq)) 7226 goto nla_put_failure; 7227 7228 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 7229 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 7230 goto nla_put_failure; 7231 if ((survey->filled & SURVEY_INFO_IN_USE) && 7232 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 7233 goto nla_put_failure; 7234 if ((survey->filled & SURVEY_INFO_TIME) && 7235 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 7236 survey->time, NL80211_SURVEY_INFO_PAD)) 7237 goto nla_put_failure; 7238 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 7239 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 7240 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 7241 goto nla_put_failure; 7242 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 7243 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 7244 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 7245 goto nla_put_failure; 7246 if ((survey->filled & SURVEY_INFO_TIME_RX) && 7247 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 7248 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 7249 goto nla_put_failure; 7250 if ((survey->filled & SURVEY_INFO_TIME_TX) && 7251 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 7252 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 7253 goto nla_put_failure; 7254 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 7255 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 7256 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 7257 goto nla_put_failure; 7258 7259 nla_nest_end(msg, infoattr); 7260 7261 genlmsg_end(msg, hdr); 7262 return 0; 7263 7264 nla_put_failure: 7265 genlmsg_cancel(msg, hdr); 7266 return -EMSGSIZE; 7267 } 7268 7269 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 7270 { 7271 struct survey_info survey; 7272 struct cfg80211_registered_device *rdev; 7273 struct wireless_dev *wdev; 7274 int survey_idx = cb->args[2]; 7275 int res; 7276 bool radio_stats; 7277 7278 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7279 if (res) 7280 return res; 7281 7282 /* prepare_wdev_dump parsed the attributes */ 7283 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 7284 7285 if (!wdev->netdev) { 7286 res = -EINVAL; 7287 goto out_err; 7288 } 7289 7290 if (!rdev->ops->dump_survey) { 7291 res = -EOPNOTSUPP; 7292 goto out_err; 7293 } 7294 7295 while (1) { 7296 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 7297 if (res == -ENOENT) 7298 break; 7299 if (res) 7300 goto out_err; 7301 7302 /* don't send disabled channels, but do send non-channel data */ 7303 if (survey.channel && 7304 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 7305 survey_idx++; 7306 continue; 7307 } 7308 7309 if (nl80211_send_survey(skb, 7310 NETLINK_CB(cb->skb).portid, 7311 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7312 wdev->netdev, radio_stats, &survey) < 0) 7313 goto out; 7314 survey_idx++; 7315 } 7316 7317 out: 7318 cb->args[2] = survey_idx; 7319 res = skb->len; 7320 out_err: 7321 nl80211_finish_wdev_dump(rdev); 7322 return res; 7323 } 7324 7325 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 7326 { 7327 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 7328 NL80211_WPA_VERSION_2)); 7329 } 7330 7331 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 7332 { 7333 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7334 struct net_device *dev = info->user_ptr[1]; 7335 struct ieee80211_channel *chan; 7336 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 7337 int err, ssid_len, ie_len = 0, sae_data_len = 0; 7338 enum nl80211_auth_type auth_type; 7339 struct key_parse key; 7340 bool local_state_change; 7341 7342 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7343 return -EINVAL; 7344 7345 if (!info->attrs[NL80211_ATTR_MAC]) 7346 return -EINVAL; 7347 7348 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 7349 return -EINVAL; 7350 7351 if (!info->attrs[NL80211_ATTR_SSID]) 7352 return -EINVAL; 7353 7354 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7355 return -EINVAL; 7356 7357 err = nl80211_parse_key(info, &key); 7358 if (err) 7359 return err; 7360 7361 if (key.idx >= 0) { 7362 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 7363 return -EINVAL; 7364 if (!key.p.key || !key.p.key_len) 7365 return -EINVAL; 7366 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 7367 key.p.key_len != WLAN_KEY_LEN_WEP40) && 7368 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 7369 key.p.key_len != WLAN_KEY_LEN_WEP104)) 7370 return -EINVAL; 7371 if (key.idx > 4) 7372 return -EINVAL; 7373 } else { 7374 key.p.key_len = 0; 7375 key.p.key = NULL; 7376 } 7377 7378 if (key.idx >= 0) { 7379 int i; 7380 bool ok = false; 7381 7382 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 7383 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 7384 ok = true; 7385 break; 7386 } 7387 } 7388 if (!ok) 7389 return -EINVAL; 7390 } 7391 7392 if (!rdev->ops->auth) 7393 return -EOPNOTSUPP; 7394 7395 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7396 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7397 return -EOPNOTSUPP; 7398 7399 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7400 chan = nl80211_get_valid_chan(&rdev->wiphy, 7401 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7402 if (!chan) 7403 return -EINVAL; 7404 7405 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7406 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7407 7408 if (info->attrs[NL80211_ATTR_IE]) { 7409 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7410 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7411 } 7412 7413 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7414 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 7415 return -EINVAL; 7416 7417 if (auth_type == NL80211_AUTHTYPE_SAE && 7418 !info->attrs[NL80211_ATTR_SAE_DATA]) 7419 return -EINVAL; 7420 7421 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 7422 if (auth_type != NL80211_AUTHTYPE_SAE) 7423 return -EINVAL; 7424 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 7425 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 7426 /* need to include at least Auth Transaction and Status Code */ 7427 if (sae_data_len < 4) 7428 return -EINVAL; 7429 } 7430 7431 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7432 7433 /* 7434 * Since we no longer track auth state, ignore 7435 * requests to only change local state. 7436 */ 7437 if (local_state_change) 7438 return 0; 7439 7440 wdev_lock(dev->ieee80211_ptr); 7441 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 7442 ssid, ssid_len, ie, ie_len, 7443 key.p.key, key.p.key_len, key.idx, 7444 sae_data, sae_data_len); 7445 wdev_unlock(dev->ieee80211_ptr); 7446 return err; 7447 } 7448 7449 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 7450 struct genl_info *info, 7451 struct cfg80211_crypto_settings *settings, 7452 int cipher_limit) 7453 { 7454 memset(settings, 0, sizeof(*settings)); 7455 7456 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 7457 7458 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 7459 u16 proto; 7460 7461 proto = nla_get_u16( 7462 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 7463 settings->control_port_ethertype = cpu_to_be16(proto); 7464 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 7465 proto != ETH_P_PAE) 7466 return -EINVAL; 7467 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 7468 settings->control_port_no_encrypt = true; 7469 } else 7470 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 7471 7472 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 7473 void *data; 7474 int len, i; 7475 7476 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7477 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7478 settings->n_ciphers_pairwise = len / sizeof(u32); 7479 7480 if (len % sizeof(u32)) 7481 return -EINVAL; 7482 7483 if (settings->n_ciphers_pairwise > cipher_limit) 7484 return -EINVAL; 7485 7486 memcpy(settings->ciphers_pairwise, data, len); 7487 7488 for (i = 0; i < settings->n_ciphers_pairwise; i++) 7489 if (!cfg80211_supported_cipher_suite( 7490 &rdev->wiphy, 7491 settings->ciphers_pairwise[i])) 7492 return -EINVAL; 7493 } 7494 7495 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 7496 settings->cipher_group = 7497 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 7498 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 7499 settings->cipher_group)) 7500 return -EINVAL; 7501 } 7502 7503 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 7504 settings->wpa_versions = 7505 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 7506 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 7507 return -EINVAL; 7508 } 7509 7510 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 7511 void *data; 7512 int len; 7513 7514 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 7515 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 7516 settings->n_akm_suites = len / sizeof(u32); 7517 7518 if (len % sizeof(u32)) 7519 return -EINVAL; 7520 7521 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 7522 return -EINVAL; 7523 7524 memcpy(settings->akm_suites, data, len); 7525 } 7526 7527 return 0; 7528 } 7529 7530 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 7531 { 7532 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7533 struct net_device *dev = info->user_ptr[1]; 7534 struct ieee80211_channel *chan; 7535 struct cfg80211_assoc_request req = {}; 7536 const u8 *bssid, *ssid; 7537 int err, ssid_len = 0; 7538 7539 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7540 return -EINVAL; 7541 7542 if (!info->attrs[NL80211_ATTR_MAC] || 7543 !info->attrs[NL80211_ATTR_SSID] || 7544 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7545 return -EINVAL; 7546 7547 if (!rdev->ops->assoc) 7548 return -EOPNOTSUPP; 7549 7550 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7551 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7552 return -EOPNOTSUPP; 7553 7554 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7555 7556 chan = nl80211_get_valid_chan(&rdev->wiphy, 7557 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7558 if (!chan) 7559 return -EINVAL; 7560 7561 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7562 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7563 7564 if (info->attrs[NL80211_ATTR_IE]) { 7565 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7566 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7567 } 7568 7569 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7570 enum nl80211_mfp mfp = 7571 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7572 if (mfp == NL80211_MFP_REQUIRED) 7573 req.use_mfp = true; 7574 else if (mfp != NL80211_MFP_NO) 7575 return -EINVAL; 7576 } 7577 7578 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7579 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7580 7581 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7582 req.flags |= ASSOC_REQ_DISABLE_HT; 7583 7584 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7585 memcpy(&req.ht_capa_mask, 7586 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7587 sizeof(req.ht_capa_mask)); 7588 7589 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7590 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7591 return -EINVAL; 7592 memcpy(&req.ht_capa, 7593 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7594 sizeof(req.ht_capa)); 7595 } 7596 7597 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7598 req.flags |= ASSOC_REQ_DISABLE_VHT; 7599 7600 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7601 memcpy(&req.vht_capa_mask, 7602 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7603 sizeof(req.vht_capa_mask)); 7604 7605 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7606 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7607 return -EINVAL; 7608 memcpy(&req.vht_capa, 7609 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7610 sizeof(req.vht_capa)); 7611 } 7612 7613 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7614 if (!((rdev->wiphy.features & 7615 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 7616 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 7617 !wiphy_ext_feature_isset(&rdev->wiphy, 7618 NL80211_EXT_FEATURE_RRM)) 7619 return -EINVAL; 7620 req.flags |= ASSOC_REQ_USE_RRM; 7621 } 7622 7623 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7624 if (!err) { 7625 wdev_lock(dev->ieee80211_ptr); 7626 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7627 ssid, ssid_len, &req); 7628 wdev_unlock(dev->ieee80211_ptr); 7629 } 7630 7631 return err; 7632 } 7633 7634 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7635 { 7636 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7637 struct net_device *dev = info->user_ptr[1]; 7638 const u8 *ie = NULL, *bssid; 7639 int ie_len = 0, err; 7640 u16 reason_code; 7641 bool local_state_change; 7642 7643 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7644 return -EINVAL; 7645 7646 if (!info->attrs[NL80211_ATTR_MAC]) 7647 return -EINVAL; 7648 7649 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7650 return -EINVAL; 7651 7652 if (!rdev->ops->deauth) 7653 return -EOPNOTSUPP; 7654 7655 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7656 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7657 return -EOPNOTSUPP; 7658 7659 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7660 7661 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7662 if (reason_code == 0) { 7663 /* Reason Code 0 is reserved */ 7664 return -EINVAL; 7665 } 7666 7667 if (info->attrs[NL80211_ATTR_IE]) { 7668 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7669 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7670 } 7671 7672 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7673 7674 wdev_lock(dev->ieee80211_ptr); 7675 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7676 local_state_change); 7677 wdev_unlock(dev->ieee80211_ptr); 7678 return err; 7679 } 7680 7681 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7682 { 7683 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7684 struct net_device *dev = info->user_ptr[1]; 7685 const u8 *ie = NULL, *bssid; 7686 int ie_len = 0, err; 7687 u16 reason_code; 7688 bool local_state_change; 7689 7690 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7691 return -EINVAL; 7692 7693 if (!info->attrs[NL80211_ATTR_MAC]) 7694 return -EINVAL; 7695 7696 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7697 return -EINVAL; 7698 7699 if (!rdev->ops->disassoc) 7700 return -EOPNOTSUPP; 7701 7702 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7703 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7704 return -EOPNOTSUPP; 7705 7706 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7707 7708 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7709 if (reason_code == 0) { 7710 /* Reason Code 0 is reserved */ 7711 return -EINVAL; 7712 } 7713 7714 if (info->attrs[NL80211_ATTR_IE]) { 7715 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7716 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7717 } 7718 7719 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7720 7721 wdev_lock(dev->ieee80211_ptr); 7722 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7723 local_state_change); 7724 wdev_unlock(dev->ieee80211_ptr); 7725 return err; 7726 } 7727 7728 static bool 7729 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7730 int mcast_rate[NUM_NL80211_BANDS], 7731 int rateval) 7732 { 7733 struct wiphy *wiphy = &rdev->wiphy; 7734 bool found = false; 7735 int band, i; 7736 7737 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7738 struct ieee80211_supported_band *sband; 7739 7740 sband = wiphy->bands[band]; 7741 if (!sband) 7742 continue; 7743 7744 for (i = 0; i < sband->n_bitrates; i++) { 7745 if (sband->bitrates[i].bitrate == rateval) { 7746 mcast_rate[band] = i + 1; 7747 found = true; 7748 break; 7749 } 7750 } 7751 } 7752 7753 return found; 7754 } 7755 7756 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7757 { 7758 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7759 struct net_device *dev = info->user_ptr[1]; 7760 struct cfg80211_ibss_params ibss; 7761 struct wiphy *wiphy; 7762 struct cfg80211_cached_keys *connkeys = NULL; 7763 int err; 7764 7765 memset(&ibss, 0, sizeof(ibss)); 7766 7767 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7768 return -EINVAL; 7769 7770 if (!info->attrs[NL80211_ATTR_SSID] || 7771 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7772 return -EINVAL; 7773 7774 ibss.beacon_interval = 100; 7775 7776 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7777 ibss.beacon_interval = 7778 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7779 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7780 return -EINVAL; 7781 } 7782 7783 if (!rdev->ops->join_ibss) 7784 return -EOPNOTSUPP; 7785 7786 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7787 return -EOPNOTSUPP; 7788 7789 wiphy = &rdev->wiphy; 7790 7791 if (info->attrs[NL80211_ATTR_MAC]) { 7792 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7793 7794 if (!is_valid_ether_addr(ibss.bssid)) 7795 return -EINVAL; 7796 } 7797 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7798 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7799 7800 if (info->attrs[NL80211_ATTR_IE]) { 7801 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7802 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7803 } 7804 7805 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7806 if (err) 7807 return err; 7808 7809 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7810 NL80211_IFTYPE_ADHOC)) 7811 return -EINVAL; 7812 7813 switch (ibss.chandef.width) { 7814 case NL80211_CHAN_WIDTH_5: 7815 case NL80211_CHAN_WIDTH_10: 7816 case NL80211_CHAN_WIDTH_20_NOHT: 7817 break; 7818 case NL80211_CHAN_WIDTH_20: 7819 case NL80211_CHAN_WIDTH_40: 7820 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7821 return -EINVAL; 7822 break; 7823 case NL80211_CHAN_WIDTH_80: 7824 case NL80211_CHAN_WIDTH_80P80: 7825 case NL80211_CHAN_WIDTH_160: 7826 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7827 return -EINVAL; 7828 if (!wiphy_ext_feature_isset(&rdev->wiphy, 7829 NL80211_EXT_FEATURE_VHT_IBSS)) 7830 return -EINVAL; 7831 break; 7832 default: 7833 return -EINVAL; 7834 } 7835 7836 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7837 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7838 7839 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7840 u8 *rates = 7841 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7842 int n_rates = 7843 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7844 struct ieee80211_supported_band *sband = 7845 wiphy->bands[ibss.chandef.chan->band]; 7846 7847 err = ieee80211_get_ratemask(sband, rates, n_rates, 7848 &ibss.basic_rates); 7849 if (err) 7850 return err; 7851 } 7852 7853 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7854 memcpy(&ibss.ht_capa_mask, 7855 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7856 sizeof(ibss.ht_capa_mask)); 7857 7858 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7859 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7860 return -EINVAL; 7861 memcpy(&ibss.ht_capa, 7862 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7863 sizeof(ibss.ht_capa)); 7864 } 7865 7866 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7867 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7868 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7869 return -EINVAL; 7870 7871 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7872 bool no_ht = false; 7873 7874 connkeys = nl80211_parse_connkeys(rdev, 7875 info->attrs[NL80211_ATTR_KEYS], 7876 &no_ht); 7877 if (IS_ERR(connkeys)) 7878 return PTR_ERR(connkeys); 7879 7880 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7881 no_ht) { 7882 kzfree(connkeys); 7883 return -EINVAL; 7884 } 7885 } 7886 7887 ibss.control_port = 7888 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7889 7890 ibss.userspace_handles_dfs = 7891 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7892 7893 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7894 if (err) 7895 kzfree(connkeys); 7896 return err; 7897 } 7898 7899 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7900 { 7901 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7902 struct net_device *dev = info->user_ptr[1]; 7903 7904 if (!rdev->ops->leave_ibss) 7905 return -EOPNOTSUPP; 7906 7907 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7908 return -EOPNOTSUPP; 7909 7910 return cfg80211_leave_ibss(rdev, dev, false); 7911 } 7912 7913 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7914 { 7915 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7916 struct net_device *dev = info->user_ptr[1]; 7917 int mcast_rate[NUM_NL80211_BANDS]; 7918 u32 nla_rate; 7919 int err; 7920 7921 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7922 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 7923 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 7924 return -EOPNOTSUPP; 7925 7926 if (!rdev->ops->set_mcast_rate) 7927 return -EOPNOTSUPP; 7928 7929 memset(mcast_rate, 0, sizeof(mcast_rate)); 7930 7931 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7932 return -EINVAL; 7933 7934 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7935 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7936 return -EINVAL; 7937 7938 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 7939 7940 return err; 7941 } 7942 7943 static struct sk_buff * 7944 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7945 struct wireless_dev *wdev, int approxlen, 7946 u32 portid, u32 seq, enum nl80211_commands cmd, 7947 enum nl80211_attrs attr, 7948 const struct nl80211_vendor_cmd_info *info, 7949 gfp_t gfp) 7950 { 7951 struct sk_buff *skb; 7952 void *hdr; 7953 struct nlattr *data; 7954 7955 skb = nlmsg_new(approxlen + 100, gfp); 7956 if (!skb) 7957 return NULL; 7958 7959 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7960 if (!hdr) { 7961 kfree_skb(skb); 7962 return NULL; 7963 } 7964 7965 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7966 goto nla_put_failure; 7967 7968 if (info) { 7969 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7970 info->vendor_id)) 7971 goto nla_put_failure; 7972 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7973 info->subcmd)) 7974 goto nla_put_failure; 7975 } 7976 7977 if (wdev) { 7978 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 7979 wdev_id(wdev), NL80211_ATTR_PAD)) 7980 goto nla_put_failure; 7981 if (wdev->netdev && 7982 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 7983 wdev->netdev->ifindex)) 7984 goto nla_put_failure; 7985 } 7986 7987 data = nla_nest_start(skb, attr); 7988 7989 ((void **)skb->cb)[0] = rdev; 7990 ((void **)skb->cb)[1] = hdr; 7991 ((void **)skb->cb)[2] = data; 7992 7993 return skb; 7994 7995 nla_put_failure: 7996 kfree_skb(skb); 7997 return NULL; 7998 } 7999 8000 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 8001 struct wireless_dev *wdev, 8002 enum nl80211_commands cmd, 8003 enum nl80211_attrs attr, 8004 int vendor_event_idx, 8005 int approxlen, gfp_t gfp) 8006 { 8007 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 8008 const struct nl80211_vendor_cmd_info *info; 8009 8010 switch (cmd) { 8011 case NL80211_CMD_TESTMODE: 8012 if (WARN_ON(vendor_event_idx != -1)) 8013 return NULL; 8014 info = NULL; 8015 break; 8016 case NL80211_CMD_VENDOR: 8017 if (WARN_ON(vendor_event_idx < 0 || 8018 vendor_event_idx >= wiphy->n_vendor_events)) 8019 return NULL; 8020 info = &wiphy->vendor_events[vendor_event_idx]; 8021 break; 8022 default: 8023 WARN_ON(1); 8024 return NULL; 8025 } 8026 8027 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 8028 cmd, attr, info, gfp); 8029 } 8030 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 8031 8032 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 8033 { 8034 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 8035 void *hdr = ((void **)skb->cb)[1]; 8036 struct nlattr *data = ((void **)skb->cb)[2]; 8037 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 8038 8039 /* clear CB data for netlink core to own from now on */ 8040 memset(skb->cb, 0, sizeof(skb->cb)); 8041 8042 nla_nest_end(skb, data); 8043 genlmsg_end(skb, hdr); 8044 8045 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 8046 mcgrp = NL80211_MCGRP_VENDOR; 8047 8048 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 8049 mcgrp, gfp); 8050 } 8051 EXPORT_SYMBOL(__cfg80211_send_event_skb); 8052 8053 #ifdef CONFIG_NL80211_TESTMODE 8054 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 8055 { 8056 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8057 struct wireless_dev *wdev = 8058 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 8059 int err; 8060 8061 if (!rdev->ops->testmode_cmd) 8062 return -EOPNOTSUPP; 8063 8064 if (IS_ERR(wdev)) { 8065 err = PTR_ERR(wdev); 8066 if (err != -EINVAL) 8067 return err; 8068 wdev = NULL; 8069 } else if (wdev->wiphy != &rdev->wiphy) { 8070 return -EINVAL; 8071 } 8072 8073 if (!info->attrs[NL80211_ATTR_TESTDATA]) 8074 return -EINVAL; 8075 8076 rdev->cur_cmd_info = info; 8077 err = rdev_testmode_cmd(rdev, wdev, 8078 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 8079 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 8080 rdev->cur_cmd_info = NULL; 8081 8082 return err; 8083 } 8084 8085 static int nl80211_testmode_dump(struct sk_buff *skb, 8086 struct netlink_callback *cb) 8087 { 8088 struct cfg80211_registered_device *rdev; 8089 int err; 8090 long phy_idx; 8091 void *data = NULL; 8092 int data_len = 0; 8093 8094 rtnl_lock(); 8095 8096 if (cb->args[0]) { 8097 /* 8098 * 0 is a valid index, but not valid for args[0], 8099 * so we need to offset by 1. 8100 */ 8101 phy_idx = cb->args[0] - 1; 8102 } else { 8103 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 8104 nl80211_fam.attrbuf, nl80211_fam.maxattr, 8105 nl80211_policy); 8106 if (err) 8107 goto out_err; 8108 8109 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 8110 nl80211_fam.attrbuf); 8111 if (IS_ERR(rdev)) { 8112 err = PTR_ERR(rdev); 8113 goto out_err; 8114 } 8115 phy_idx = rdev->wiphy_idx; 8116 rdev = NULL; 8117 8118 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 8119 cb->args[1] = 8120 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 8121 } 8122 8123 if (cb->args[1]) { 8124 data = nla_data((void *)cb->args[1]); 8125 data_len = nla_len((void *)cb->args[1]); 8126 } 8127 8128 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 8129 if (!rdev) { 8130 err = -ENOENT; 8131 goto out_err; 8132 } 8133 8134 if (!rdev->ops->testmode_dump) { 8135 err = -EOPNOTSUPP; 8136 goto out_err; 8137 } 8138 8139 while (1) { 8140 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 8141 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8142 NL80211_CMD_TESTMODE); 8143 struct nlattr *tmdata; 8144 8145 if (!hdr) 8146 break; 8147 8148 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 8149 genlmsg_cancel(skb, hdr); 8150 break; 8151 } 8152 8153 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 8154 if (!tmdata) { 8155 genlmsg_cancel(skb, hdr); 8156 break; 8157 } 8158 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 8159 nla_nest_end(skb, tmdata); 8160 8161 if (err == -ENOBUFS || err == -ENOENT) { 8162 genlmsg_cancel(skb, hdr); 8163 break; 8164 } else if (err) { 8165 genlmsg_cancel(skb, hdr); 8166 goto out_err; 8167 } 8168 8169 genlmsg_end(skb, hdr); 8170 } 8171 8172 err = skb->len; 8173 /* see above */ 8174 cb->args[0] = phy_idx + 1; 8175 out_err: 8176 rtnl_unlock(); 8177 return err; 8178 } 8179 #endif 8180 8181 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 8182 { 8183 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8184 struct net_device *dev = info->user_ptr[1]; 8185 struct cfg80211_connect_params connect; 8186 struct wiphy *wiphy; 8187 struct cfg80211_cached_keys *connkeys = NULL; 8188 int err; 8189 8190 memset(&connect, 0, sizeof(connect)); 8191 8192 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8193 return -EINVAL; 8194 8195 if (!info->attrs[NL80211_ATTR_SSID] || 8196 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8197 return -EINVAL; 8198 8199 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 8200 connect.auth_type = 8201 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8202 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 8203 NL80211_CMD_CONNECT)) 8204 return -EINVAL; 8205 } else 8206 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 8207 8208 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 8209 8210 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 8211 NL80211_MAX_NR_CIPHER_SUITES); 8212 if (err) 8213 return err; 8214 8215 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8216 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8217 return -EOPNOTSUPP; 8218 8219 wiphy = &rdev->wiphy; 8220 8221 connect.bg_scan_period = -1; 8222 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 8223 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 8224 connect.bg_scan_period = 8225 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 8226 } 8227 8228 if (info->attrs[NL80211_ATTR_MAC]) 8229 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8230 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 8231 connect.bssid_hint = 8232 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 8233 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8234 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8235 8236 if (info->attrs[NL80211_ATTR_IE]) { 8237 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8238 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8239 } 8240 8241 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8242 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8243 if (connect.mfp != NL80211_MFP_REQUIRED && 8244 connect.mfp != NL80211_MFP_NO) 8245 return -EINVAL; 8246 } else { 8247 connect.mfp = NL80211_MFP_NO; 8248 } 8249 8250 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8251 connect.prev_bssid = 8252 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8253 8254 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8255 connect.channel = nl80211_get_valid_chan( 8256 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8257 if (!connect.channel) 8258 return -EINVAL; 8259 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 8260 connect.channel_hint = nl80211_get_valid_chan( 8261 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 8262 if (!connect.channel_hint) 8263 return -EINVAL; 8264 } 8265 8266 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8267 connkeys = nl80211_parse_connkeys(rdev, 8268 info->attrs[NL80211_ATTR_KEYS], NULL); 8269 if (IS_ERR(connkeys)) 8270 return PTR_ERR(connkeys); 8271 } 8272 8273 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8274 connect.flags |= ASSOC_REQ_DISABLE_HT; 8275 8276 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8277 memcpy(&connect.ht_capa_mask, 8278 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8279 sizeof(connect.ht_capa_mask)); 8280 8281 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8282 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 8283 kzfree(connkeys); 8284 return -EINVAL; 8285 } 8286 memcpy(&connect.ht_capa, 8287 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8288 sizeof(connect.ht_capa)); 8289 } 8290 8291 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8292 connect.flags |= ASSOC_REQ_DISABLE_VHT; 8293 8294 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8295 memcpy(&connect.vht_capa_mask, 8296 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8297 sizeof(connect.vht_capa_mask)); 8298 8299 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8300 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 8301 kzfree(connkeys); 8302 return -EINVAL; 8303 } 8304 memcpy(&connect.vht_capa, 8305 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8306 sizeof(connect.vht_capa)); 8307 } 8308 8309 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8310 if (!((rdev->wiphy.features & 8311 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8312 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8313 !wiphy_ext_feature_isset(&rdev->wiphy, 8314 NL80211_EXT_FEATURE_RRM)) { 8315 kzfree(connkeys); 8316 return -EINVAL; 8317 } 8318 connect.flags |= ASSOC_REQ_USE_RRM; 8319 } 8320 8321 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 8322 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 8323 kzfree(connkeys); 8324 return -EOPNOTSUPP; 8325 } 8326 8327 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 8328 /* bss selection makes no sense if bssid is set */ 8329 if (connect.bssid) { 8330 kzfree(connkeys); 8331 return -EINVAL; 8332 } 8333 8334 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 8335 wiphy, &connect.bss_select); 8336 if (err) { 8337 kzfree(connkeys); 8338 return err; 8339 } 8340 } 8341 8342 wdev_lock(dev->ieee80211_ptr); 8343 err = cfg80211_connect(rdev, dev, &connect, connkeys, 8344 connect.prev_bssid); 8345 wdev_unlock(dev->ieee80211_ptr); 8346 if (err) 8347 kzfree(connkeys); 8348 return err; 8349 } 8350 8351 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 8352 { 8353 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8354 struct net_device *dev = info->user_ptr[1]; 8355 u16 reason; 8356 int ret; 8357 8358 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8359 reason = WLAN_REASON_DEAUTH_LEAVING; 8360 else 8361 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8362 8363 if (reason == 0) 8364 return -EINVAL; 8365 8366 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8367 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8368 return -EOPNOTSUPP; 8369 8370 wdev_lock(dev->ieee80211_ptr); 8371 ret = cfg80211_disconnect(rdev, dev, reason, true); 8372 wdev_unlock(dev->ieee80211_ptr); 8373 return ret; 8374 } 8375 8376 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 8377 { 8378 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8379 struct net *net; 8380 int err; 8381 8382 if (info->attrs[NL80211_ATTR_PID]) { 8383 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 8384 8385 net = get_net_ns_by_pid(pid); 8386 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 8387 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 8388 8389 net = get_net_ns_by_fd(fd); 8390 } else { 8391 return -EINVAL; 8392 } 8393 8394 if (IS_ERR(net)) 8395 return PTR_ERR(net); 8396 8397 err = 0; 8398 8399 /* check if anything to do */ 8400 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 8401 err = cfg80211_switch_netns(rdev, net); 8402 8403 put_net(net); 8404 return err; 8405 } 8406 8407 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 8408 { 8409 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8410 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 8411 struct cfg80211_pmksa *pmksa) = NULL; 8412 struct net_device *dev = info->user_ptr[1]; 8413 struct cfg80211_pmksa pmksa; 8414 8415 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 8416 8417 if (!info->attrs[NL80211_ATTR_MAC]) 8418 return -EINVAL; 8419 8420 if (!info->attrs[NL80211_ATTR_PMKID]) 8421 return -EINVAL; 8422 8423 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 8424 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8425 8426 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8427 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8428 return -EOPNOTSUPP; 8429 8430 switch (info->genlhdr->cmd) { 8431 case NL80211_CMD_SET_PMKSA: 8432 rdev_ops = rdev->ops->set_pmksa; 8433 break; 8434 case NL80211_CMD_DEL_PMKSA: 8435 rdev_ops = rdev->ops->del_pmksa; 8436 break; 8437 default: 8438 WARN_ON(1); 8439 break; 8440 } 8441 8442 if (!rdev_ops) 8443 return -EOPNOTSUPP; 8444 8445 return rdev_ops(&rdev->wiphy, dev, &pmksa); 8446 } 8447 8448 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 8449 { 8450 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8451 struct net_device *dev = info->user_ptr[1]; 8452 8453 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8454 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8455 return -EOPNOTSUPP; 8456 8457 if (!rdev->ops->flush_pmksa) 8458 return -EOPNOTSUPP; 8459 8460 return rdev_flush_pmksa(rdev, dev); 8461 } 8462 8463 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 8464 { 8465 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8466 struct net_device *dev = info->user_ptr[1]; 8467 u8 action_code, dialog_token; 8468 u32 peer_capability = 0; 8469 u16 status_code; 8470 u8 *peer; 8471 bool initiator; 8472 8473 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8474 !rdev->ops->tdls_mgmt) 8475 return -EOPNOTSUPP; 8476 8477 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 8478 !info->attrs[NL80211_ATTR_STATUS_CODE] || 8479 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 8480 !info->attrs[NL80211_ATTR_IE] || 8481 !info->attrs[NL80211_ATTR_MAC]) 8482 return -EINVAL; 8483 8484 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8485 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 8486 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 8487 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 8488 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 8489 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 8490 peer_capability = 8491 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 8492 8493 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 8494 dialog_token, status_code, peer_capability, 8495 initiator, 8496 nla_data(info->attrs[NL80211_ATTR_IE]), 8497 nla_len(info->attrs[NL80211_ATTR_IE])); 8498 } 8499 8500 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 8501 { 8502 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8503 struct net_device *dev = info->user_ptr[1]; 8504 enum nl80211_tdls_operation operation; 8505 u8 *peer; 8506 8507 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8508 !rdev->ops->tdls_oper) 8509 return -EOPNOTSUPP; 8510 8511 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 8512 !info->attrs[NL80211_ATTR_MAC]) 8513 return -EINVAL; 8514 8515 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 8516 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8517 8518 return rdev_tdls_oper(rdev, dev, peer, operation); 8519 } 8520 8521 static int nl80211_remain_on_channel(struct sk_buff *skb, 8522 struct genl_info *info) 8523 { 8524 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8525 struct wireless_dev *wdev = info->user_ptr[1]; 8526 struct cfg80211_chan_def chandef; 8527 struct sk_buff *msg; 8528 void *hdr; 8529 u64 cookie; 8530 u32 duration; 8531 int err; 8532 8533 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 8534 !info->attrs[NL80211_ATTR_DURATION]) 8535 return -EINVAL; 8536 8537 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8538 8539 if (!rdev->ops->remain_on_channel || 8540 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 8541 return -EOPNOTSUPP; 8542 8543 /* 8544 * We should be on that channel for at least a minimum amount of 8545 * time (10ms) but no longer than the driver supports. 8546 */ 8547 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8548 duration > rdev->wiphy.max_remain_on_channel_duration) 8549 return -EINVAL; 8550 8551 err = nl80211_parse_chandef(rdev, info, &chandef); 8552 if (err) 8553 return err; 8554 8555 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8556 if (!msg) 8557 return -ENOMEM; 8558 8559 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8560 NL80211_CMD_REMAIN_ON_CHANNEL); 8561 if (!hdr) { 8562 err = -ENOBUFS; 8563 goto free_msg; 8564 } 8565 8566 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 8567 duration, &cookie); 8568 8569 if (err) 8570 goto free_msg; 8571 8572 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 8573 NL80211_ATTR_PAD)) 8574 goto nla_put_failure; 8575 8576 genlmsg_end(msg, hdr); 8577 8578 return genlmsg_reply(msg, info); 8579 8580 nla_put_failure: 8581 err = -ENOBUFS; 8582 free_msg: 8583 nlmsg_free(msg); 8584 return err; 8585 } 8586 8587 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 8588 struct genl_info *info) 8589 { 8590 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8591 struct wireless_dev *wdev = info->user_ptr[1]; 8592 u64 cookie; 8593 8594 if (!info->attrs[NL80211_ATTR_COOKIE]) 8595 return -EINVAL; 8596 8597 if (!rdev->ops->cancel_remain_on_channel) 8598 return -EOPNOTSUPP; 8599 8600 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8601 8602 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8603 } 8604 8605 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8606 u8 *rates, u8 rates_len) 8607 { 8608 u8 i; 8609 u32 mask = 0; 8610 8611 for (i = 0; i < rates_len; i++) { 8612 int rate = (rates[i] & 0x7f) * 5; 8613 int ridx; 8614 8615 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8616 struct ieee80211_rate *srate = 8617 &sband->bitrates[ridx]; 8618 if (rate == srate->bitrate) { 8619 mask |= 1 << ridx; 8620 break; 8621 } 8622 } 8623 if (ridx == sband->n_bitrates) 8624 return 0; /* rate not found */ 8625 } 8626 8627 return mask; 8628 } 8629 8630 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8631 u8 *rates, u8 rates_len, 8632 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8633 { 8634 u8 i; 8635 8636 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8637 8638 for (i = 0; i < rates_len; i++) { 8639 int ridx, rbit; 8640 8641 ridx = rates[i] / 8; 8642 rbit = BIT(rates[i] % 8); 8643 8644 /* check validity */ 8645 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8646 return false; 8647 8648 /* check availability */ 8649 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8650 mcs[ridx] |= rbit; 8651 else 8652 return false; 8653 } 8654 8655 return true; 8656 } 8657 8658 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8659 { 8660 u16 mcs_mask = 0; 8661 8662 switch (vht_mcs_map) { 8663 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8664 break; 8665 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8666 mcs_mask = 0x00FF; 8667 break; 8668 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8669 mcs_mask = 0x01FF; 8670 break; 8671 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8672 mcs_mask = 0x03FF; 8673 break; 8674 default: 8675 break; 8676 } 8677 8678 return mcs_mask; 8679 } 8680 8681 static void vht_build_mcs_mask(u16 vht_mcs_map, 8682 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8683 { 8684 u8 nss; 8685 8686 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8687 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8688 vht_mcs_map >>= 2; 8689 } 8690 } 8691 8692 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8693 struct nl80211_txrate_vht *txrate, 8694 u16 mcs[NL80211_VHT_NSS_MAX]) 8695 { 8696 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8697 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8698 u8 i; 8699 8700 if (!sband->vht_cap.vht_supported) 8701 return false; 8702 8703 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8704 8705 /* Build vht_mcs_mask from VHT capabilities */ 8706 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8707 8708 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8709 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8710 mcs[i] = txrate->mcs[i]; 8711 else 8712 return false; 8713 } 8714 8715 return true; 8716 } 8717 8718 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8719 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8720 .len = NL80211_MAX_SUPP_RATES }, 8721 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8722 .len = NL80211_MAX_SUPP_HT_RATES }, 8723 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8724 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8725 }; 8726 8727 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8728 struct genl_info *info) 8729 { 8730 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8731 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8732 struct cfg80211_bitrate_mask mask; 8733 int rem, i; 8734 struct net_device *dev = info->user_ptr[1]; 8735 struct nlattr *tx_rates; 8736 struct ieee80211_supported_band *sband; 8737 u16 vht_tx_mcs_map; 8738 8739 if (!rdev->ops->set_bitrate_mask) 8740 return -EOPNOTSUPP; 8741 8742 memset(&mask, 0, sizeof(mask)); 8743 /* Default to all rates enabled */ 8744 for (i = 0; i < NUM_NL80211_BANDS; i++) { 8745 sband = rdev->wiphy.bands[i]; 8746 8747 if (!sband) 8748 continue; 8749 8750 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8751 memcpy(mask.control[i].ht_mcs, 8752 sband->ht_cap.mcs.rx_mask, 8753 sizeof(mask.control[i].ht_mcs)); 8754 8755 if (!sband->vht_cap.vht_supported) 8756 continue; 8757 8758 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8759 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8760 } 8761 8762 /* if no rates are given set it back to the defaults */ 8763 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8764 goto out; 8765 8766 /* 8767 * The nested attribute uses enum nl80211_band as the index. This maps 8768 * directly to the enum nl80211_band values used in cfg80211. 8769 */ 8770 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8771 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8772 enum nl80211_band band = nla_type(tx_rates); 8773 int err; 8774 8775 if (band < 0 || band >= NUM_NL80211_BANDS) 8776 return -EINVAL; 8777 sband = rdev->wiphy.bands[band]; 8778 if (sband == NULL) 8779 return -EINVAL; 8780 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8781 nla_len(tx_rates), nl80211_txattr_policy); 8782 if (err) 8783 return err; 8784 if (tb[NL80211_TXRATE_LEGACY]) { 8785 mask.control[band].legacy = rateset_to_mask( 8786 sband, 8787 nla_data(tb[NL80211_TXRATE_LEGACY]), 8788 nla_len(tb[NL80211_TXRATE_LEGACY])); 8789 if ((mask.control[band].legacy == 0) && 8790 nla_len(tb[NL80211_TXRATE_LEGACY])) 8791 return -EINVAL; 8792 } 8793 if (tb[NL80211_TXRATE_HT]) { 8794 if (!ht_rateset_to_mask( 8795 sband, 8796 nla_data(tb[NL80211_TXRATE_HT]), 8797 nla_len(tb[NL80211_TXRATE_HT]), 8798 mask.control[band].ht_mcs)) 8799 return -EINVAL; 8800 } 8801 if (tb[NL80211_TXRATE_VHT]) { 8802 if (!vht_set_mcs_mask( 8803 sband, 8804 nla_data(tb[NL80211_TXRATE_VHT]), 8805 mask.control[band].vht_mcs)) 8806 return -EINVAL; 8807 } 8808 if (tb[NL80211_TXRATE_GI]) { 8809 mask.control[band].gi = 8810 nla_get_u8(tb[NL80211_TXRATE_GI]); 8811 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8812 return -EINVAL; 8813 } 8814 8815 if (mask.control[band].legacy == 0) { 8816 /* don't allow empty legacy rates if HT or VHT 8817 * are not even supported. 8818 */ 8819 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8820 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8821 return -EINVAL; 8822 8823 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8824 if (mask.control[band].ht_mcs[i]) 8825 goto out; 8826 8827 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8828 if (mask.control[band].vht_mcs[i]) 8829 goto out; 8830 8831 /* legacy and mcs rates may not be both empty */ 8832 return -EINVAL; 8833 } 8834 } 8835 8836 out: 8837 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8838 } 8839 8840 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8841 { 8842 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8843 struct wireless_dev *wdev = info->user_ptr[1]; 8844 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8845 8846 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8847 return -EINVAL; 8848 8849 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8850 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8851 8852 switch (wdev->iftype) { 8853 case NL80211_IFTYPE_STATION: 8854 case NL80211_IFTYPE_ADHOC: 8855 case NL80211_IFTYPE_P2P_CLIENT: 8856 case NL80211_IFTYPE_AP: 8857 case NL80211_IFTYPE_AP_VLAN: 8858 case NL80211_IFTYPE_MESH_POINT: 8859 case NL80211_IFTYPE_P2P_GO: 8860 case NL80211_IFTYPE_P2P_DEVICE: 8861 break; 8862 default: 8863 return -EOPNOTSUPP; 8864 } 8865 8866 /* not much point in registering if we can't reply */ 8867 if (!rdev->ops->mgmt_tx) 8868 return -EOPNOTSUPP; 8869 8870 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8871 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8872 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8873 } 8874 8875 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8876 { 8877 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8878 struct wireless_dev *wdev = info->user_ptr[1]; 8879 struct cfg80211_chan_def chandef; 8880 int err; 8881 void *hdr = NULL; 8882 u64 cookie; 8883 struct sk_buff *msg = NULL; 8884 struct cfg80211_mgmt_tx_params params = { 8885 .dont_wait_for_ack = 8886 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8887 }; 8888 8889 if (!info->attrs[NL80211_ATTR_FRAME]) 8890 return -EINVAL; 8891 8892 if (!rdev->ops->mgmt_tx) 8893 return -EOPNOTSUPP; 8894 8895 switch (wdev->iftype) { 8896 case NL80211_IFTYPE_P2P_DEVICE: 8897 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8898 return -EINVAL; 8899 case NL80211_IFTYPE_STATION: 8900 case NL80211_IFTYPE_ADHOC: 8901 case NL80211_IFTYPE_P2P_CLIENT: 8902 case NL80211_IFTYPE_AP: 8903 case NL80211_IFTYPE_AP_VLAN: 8904 case NL80211_IFTYPE_MESH_POINT: 8905 case NL80211_IFTYPE_P2P_GO: 8906 break; 8907 default: 8908 return -EOPNOTSUPP; 8909 } 8910 8911 if (info->attrs[NL80211_ATTR_DURATION]) { 8912 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8913 return -EINVAL; 8914 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8915 8916 /* 8917 * We should wait on the channel for at least a minimum amount 8918 * of time (10ms) but no longer than the driver supports. 8919 */ 8920 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8921 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8922 return -EINVAL; 8923 } 8924 8925 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8926 8927 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8928 return -EINVAL; 8929 8930 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8931 8932 /* get the channel if any has been specified, otherwise pass NULL to 8933 * the driver. The latter will use the current one 8934 */ 8935 chandef.chan = NULL; 8936 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8937 err = nl80211_parse_chandef(rdev, info, &chandef); 8938 if (err) 8939 return err; 8940 } 8941 8942 if (!chandef.chan && params.offchan) 8943 return -EINVAL; 8944 8945 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8946 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8947 8948 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8949 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8950 int i; 8951 8952 if (len % sizeof(u16)) 8953 return -EINVAL; 8954 8955 params.n_csa_offsets = len / sizeof(u16); 8956 params.csa_offsets = 8957 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8958 8959 /* check that all the offsets fit the frame */ 8960 for (i = 0; i < params.n_csa_offsets; i++) { 8961 if (params.csa_offsets[i] >= params.len) 8962 return -EINVAL; 8963 } 8964 } 8965 8966 if (!params.dont_wait_for_ack) { 8967 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8968 if (!msg) 8969 return -ENOMEM; 8970 8971 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8972 NL80211_CMD_FRAME); 8973 if (!hdr) { 8974 err = -ENOBUFS; 8975 goto free_msg; 8976 } 8977 } 8978 8979 params.chan = chandef.chan; 8980 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8981 if (err) 8982 goto free_msg; 8983 8984 if (msg) { 8985 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 8986 NL80211_ATTR_PAD)) 8987 goto nla_put_failure; 8988 8989 genlmsg_end(msg, hdr); 8990 return genlmsg_reply(msg, info); 8991 } 8992 8993 return 0; 8994 8995 nla_put_failure: 8996 err = -ENOBUFS; 8997 free_msg: 8998 nlmsg_free(msg); 8999 return err; 9000 } 9001 9002 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 9003 { 9004 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9005 struct wireless_dev *wdev = info->user_ptr[1]; 9006 u64 cookie; 9007 9008 if (!info->attrs[NL80211_ATTR_COOKIE]) 9009 return -EINVAL; 9010 9011 if (!rdev->ops->mgmt_tx_cancel_wait) 9012 return -EOPNOTSUPP; 9013 9014 switch (wdev->iftype) { 9015 case NL80211_IFTYPE_STATION: 9016 case NL80211_IFTYPE_ADHOC: 9017 case NL80211_IFTYPE_P2P_CLIENT: 9018 case NL80211_IFTYPE_AP: 9019 case NL80211_IFTYPE_AP_VLAN: 9020 case NL80211_IFTYPE_P2P_GO: 9021 case NL80211_IFTYPE_P2P_DEVICE: 9022 break; 9023 default: 9024 return -EOPNOTSUPP; 9025 } 9026 9027 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9028 9029 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 9030 } 9031 9032 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 9033 { 9034 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9035 struct wireless_dev *wdev; 9036 struct net_device *dev = info->user_ptr[1]; 9037 u8 ps_state; 9038 bool state; 9039 int err; 9040 9041 if (!info->attrs[NL80211_ATTR_PS_STATE]) 9042 return -EINVAL; 9043 9044 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 9045 9046 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 9047 return -EINVAL; 9048 9049 wdev = dev->ieee80211_ptr; 9050 9051 if (!rdev->ops->set_power_mgmt) 9052 return -EOPNOTSUPP; 9053 9054 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 9055 9056 if (state == wdev->ps) 9057 return 0; 9058 9059 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 9060 if (!err) 9061 wdev->ps = state; 9062 return err; 9063 } 9064 9065 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 9066 { 9067 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9068 enum nl80211_ps_state ps_state; 9069 struct wireless_dev *wdev; 9070 struct net_device *dev = info->user_ptr[1]; 9071 struct sk_buff *msg; 9072 void *hdr; 9073 int err; 9074 9075 wdev = dev->ieee80211_ptr; 9076 9077 if (!rdev->ops->set_power_mgmt) 9078 return -EOPNOTSUPP; 9079 9080 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9081 if (!msg) 9082 return -ENOMEM; 9083 9084 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9085 NL80211_CMD_GET_POWER_SAVE); 9086 if (!hdr) { 9087 err = -ENOBUFS; 9088 goto free_msg; 9089 } 9090 9091 if (wdev->ps) 9092 ps_state = NL80211_PS_ENABLED; 9093 else 9094 ps_state = NL80211_PS_DISABLED; 9095 9096 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 9097 goto nla_put_failure; 9098 9099 genlmsg_end(msg, hdr); 9100 return genlmsg_reply(msg, info); 9101 9102 nla_put_failure: 9103 err = -ENOBUFS; 9104 free_msg: 9105 nlmsg_free(msg); 9106 return err; 9107 } 9108 9109 static const struct nla_policy 9110 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 9111 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 9112 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 9113 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 9114 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 9115 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 9116 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 9117 }; 9118 9119 static int nl80211_set_cqm_txe(struct genl_info *info, 9120 u32 rate, u32 pkts, u32 intvl) 9121 { 9122 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9123 struct net_device *dev = info->user_ptr[1]; 9124 struct wireless_dev *wdev = dev->ieee80211_ptr; 9125 9126 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 9127 return -EINVAL; 9128 9129 if (!rdev->ops->set_cqm_txe_config) 9130 return -EOPNOTSUPP; 9131 9132 if (wdev->iftype != NL80211_IFTYPE_STATION && 9133 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9134 return -EOPNOTSUPP; 9135 9136 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 9137 } 9138 9139 static int nl80211_set_cqm_rssi(struct genl_info *info, 9140 s32 threshold, u32 hysteresis) 9141 { 9142 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9143 struct net_device *dev = info->user_ptr[1]; 9144 struct wireless_dev *wdev = dev->ieee80211_ptr; 9145 9146 if (threshold > 0) 9147 return -EINVAL; 9148 9149 /* disabling - hysteresis should also be zero then */ 9150 if (threshold == 0) 9151 hysteresis = 0; 9152 9153 if (!rdev->ops->set_cqm_rssi_config) 9154 return -EOPNOTSUPP; 9155 9156 if (wdev->iftype != NL80211_IFTYPE_STATION && 9157 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9158 return -EOPNOTSUPP; 9159 9160 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 9161 } 9162 9163 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 9164 { 9165 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 9166 struct nlattr *cqm; 9167 int err; 9168 9169 cqm = info->attrs[NL80211_ATTR_CQM]; 9170 if (!cqm) 9171 return -EINVAL; 9172 9173 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 9174 nl80211_attr_cqm_policy); 9175 if (err) 9176 return err; 9177 9178 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 9179 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 9180 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9181 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 9182 9183 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 9184 } 9185 9186 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 9187 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 9188 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 9189 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 9190 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 9191 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 9192 9193 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 9194 } 9195 9196 return -EINVAL; 9197 } 9198 9199 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 9200 { 9201 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9202 struct net_device *dev = info->user_ptr[1]; 9203 struct ocb_setup setup = {}; 9204 int err; 9205 9206 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9207 if (err) 9208 return err; 9209 9210 return cfg80211_join_ocb(rdev, dev, &setup); 9211 } 9212 9213 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 9214 { 9215 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9216 struct net_device *dev = info->user_ptr[1]; 9217 9218 return cfg80211_leave_ocb(rdev, dev); 9219 } 9220 9221 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 9222 { 9223 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9224 struct net_device *dev = info->user_ptr[1]; 9225 struct mesh_config cfg; 9226 struct mesh_setup setup; 9227 int err; 9228 9229 /* start with default */ 9230 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 9231 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 9232 9233 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 9234 /* and parse parameters if given */ 9235 err = nl80211_parse_mesh_config(info, &cfg, NULL); 9236 if (err) 9237 return err; 9238 } 9239 9240 if (!info->attrs[NL80211_ATTR_MESH_ID] || 9241 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 9242 return -EINVAL; 9243 9244 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 9245 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 9246 9247 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 9248 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 9249 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 9250 return -EINVAL; 9251 9252 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 9253 setup.beacon_interval = 9254 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 9255 if (setup.beacon_interval < 10 || 9256 setup.beacon_interval > 10000) 9257 return -EINVAL; 9258 } 9259 9260 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 9261 setup.dtim_period = 9262 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 9263 if (setup.dtim_period < 1 || setup.dtim_period > 100) 9264 return -EINVAL; 9265 } 9266 9267 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 9268 /* parse additional setup parameters if given */ 9269 err = nl80211_parse_mesh_setup(info, &setup); 9270 if (err) 9271 return err; 9272 } 9273 9274 if (setup.user_mpm) 9275 cfg.auto_open_plinks = false; 9276 9277 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9278 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9279 if (err) 9280 return err; 9281 } else { 9282 /* cfg80211_join_mesh() will sort it out */ 9283 setup.chandef.chan = NULL; 9284 } 9285 9286 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 9287 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9288 int n_rates = 9289 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9290 struct ieee80211_supported_band *sband; 9291 9292 if (!setup.chandef.chan) 9293 return -EINVAL; 9294 9295 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 9296 9297 err = ieee80211_get_ratemask(sband, rates, n_rates, 9298 &setup.basic_rates); 9299 if (err) 9300 return err; 9301 } 9302 9303 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 9304 } 9305 9306 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 9307 { 9308 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9309 struct net_device *dev = info->user_ptr[1]; 9310 9311 return cfg80211_leave_mesh(rdev, dev); 9312 } 9313 9314 #ifdef CONFIG_PM 9315 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 9316 struct cfg80211_registered_device *rdev) 9317 { 9318 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 9319 struct nlattr *nl_pats, *nl_pat; 9320 int i, pat_len; 9321 9322 if (!wowlan->n_patterns) 9323 return 0; 9324 9325 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 9326 if (!nl_pats) 9327 return -ENOBUFS; 9328 9329 for (i = 0; i < wowlan->n_patterns; i++) { 9330 nl_pat = nla_nest_start(msg, i + 1); 9331 if (!nl_pat) 9332 return -ENOBUFS; 9333 pat_len = wowlan->patterns[i].pattern_len; 9334 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 9335 wowlan->patterns[i].mask) || 9336 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9337 wowlan->patterns[i].pattern) || 9338 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9339 wowlan->patterns[i].pkt_offset)) 9340 return -ENOBUFS; 9341 nla_nest_end(msg, nl_pat); 9342 } 9343 nla_nest_end(msg, nl_pats); 9344 9345 return 0; 9346 } 9347 9348 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 9349 struct cfg80211_wowlan_tcp *tcp) 9350 { 9351 struct nlattr *nl_tcp; 9352 9353 if (!tcp) 9354 return 0; 9355 9356 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 9357 if (!nl_tcp) 9358 return -ENOBUFS; 9359 9360 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 9361 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 9362 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 9363 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 9364 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 9365 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 9366 tcp->payload_len, tcp->payload) || 9367 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 9368 tcp->data_interval) || 9369 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 9370 tcp->wake_len, tcp->wake_data) || 9371 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 9372 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 9373 return -ENOBUFS; 9374 9375 if (tcp->payload_seq.len && 9376 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 9377 sizeof(tcp->payload_seq), &tcp->payload_seq)) 9378 return -ENOBUFS; 9379 9380 if (tcp->payload_tok.len && 9381 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 9382 sizeof(tcp->payload_tok) + tcp->tokens_size, 9383 &tcp->payload_tok)) 9384 return -ENOBUFS; 9385 9386 nla_nest_end(msg, nl_tcp); 9387 9388 return 0; 9389 } 9390 9391 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 9392 struct cfg80211_sched_scan_request *req) 9393 { 9394 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 9395 int i; 9396 9397 if (!req) 9398 return 0; 9399 9400 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 9401 if (!nd) 9402 return -ENOBUFS; 9403 9404 if (req->n_scan_plans == 1 && 9405 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 9406 req->scan_plans[0].interval * 1000)) 9407 return -ENOBUFS; 9408 9409 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 9410 return -ENOBUFS; 9411 9412 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9413 if (!freqs) 9414 return -ENOBUFS; 9415 9416 for (i = 0; i < req->n_channels; i++) 9417 nla_put_u32(msg, i, req->channels[i]->center_freq); 9418 9419 nla_nest_end(msg, freqs); 9420 9421 if (req->n_match_sets) { 9422 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 9423 for (i = 0; i < req->n_match_sets; i++) { 9424 match = nla_nest_start(msg, i); 9425 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 9426 req->match_sets[i].ssid.ssid_len, 9427 req->match_sets[i].ssid.ssid); 9428 nla_nest_end(msg, match); 9429 } 9430 nla_nest_end(msg, matches); 9431 } 9432 9433 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 9434 if (!scan_plans) 9435 return -ENOBUFS; 9436 9437 for (i = 0; i < req->n_scan_plans; i++) { 9438 scan_plan = nla_nest_start(msg, i + 1); 9439 if (!scan_plan || 9440 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 9441 req->scan_plans[i].interval) || 9442 (req->scan_plans[i].iterations && 9443 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 9444 req->scan_plans[i].iterations))) 9445 return -ENOBUFS; 9446 nla_nest_end(msg, scan_plan); 9447 } 9448 nla_nest_end(msg, scan_plans); 9449 9450 nla_nest_end(msg, nd); 9451 9452 return 0; 9453 } 9454 9455 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 9456 { 9457 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9458 struct sk_buff *msg; 9459 void *hdr; 9460 u32 size = NLMSG_DEFAULT_SIZE; 9461 9462 if (!rdev->wiphy.wowlan) 9463 return -EOPNOTSUPP; 9464 9465 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 9466 /* adjust size to have room for all the data */ 9467 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 9468 rdev->wiphy.wowlan_config->tcp->payload_len + 9469 rdev->wiphy.wowlan_config->tcp->wake_len + 9470 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 9471 } 9472 9473 msg = nlmsg_new(size, GFP_KERNEL); 9474 if (!msg) 9475 return -ENOMEM; 9476 9477 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9478 NL80211_CMD_GET_WOWLAN); 9479 if (!hdr) 9480 goto nla_put_failure; 9481 9482 if (rdev->wiphy.wowlan_config) { 9483 struct nlattr *nl_wowlan; 9484 9485 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 9486 if (!nl_wowlan) 9487 goto nla_put_failure; 9488 9489 if ((rdev->wiphy.wowlan_config->any && 9490 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 9491 (rdev->wiphy.wowlan_config->disconnect && 9492 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 9493 (rdev->wiphy.wowlan_config->magic_pkt && 9494 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 9495 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 9496 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 9497 (rdev->wiphy.wowlan_config->eap_identity_req && 9498 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 9499 (rdev->wiphy.wowlan_config->four_way_handshake && 9500 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 9501 (rdev->wiphy.wowlan_config->rfkill_release && 9502 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 9503 goto nla_put_failure; 9504 9505 if (nl80211_send_wowlan_patterns(msg, rdev)) 9506 goto nla_put_failure; 9507 9508 if (nl80211_send_wowlan_tcp(msg, 9509 rdev->wiphy.wowlan_config->tcp)) 9510 goto nla_put_failure; 9511 9512 if (nl80211_send_wowlan_nd( 9513 msg, 9514 rdev->wiphy.wowlan_config->nd_config)) 9515 goto nla_put_failure; 9516 9517 nla_nest_end(msg, nl_wowlan); 9518 } 9519 9520 genlmsg_end(msg, hdr); 9521 return genlmsg_reply(msg, info); 9522 9523 nla_put_failure: 9524 nlmsg_free(msg); 9525 return -ENOBUFS; 9526 } 9527 9528 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 9529 struct nlattr *attr, 9530 struct cfg80211_wowlan *trig) 9531 { 9532 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 9533 struct cfg80211_wowlan_tcp *cfg; 9534 struct nl80211_wowlan_tcp_data_token *tok = NULL; 9535 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 9536 u32 size; 9537 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 9538 int err, port; 9539 9540 if (!rdev->wiphy.wowlan->tcp) 9541 return -EINVAL; 9542 9543 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 9544 nla_data(attr), nla_len(attr), 9545 nl80211_wowlan_tcp_policy); 9546 if (err) 9547 return err; 9548 9549 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 9550 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 9551 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 9552 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 9553 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 9554 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 9555 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 9556 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 9557 return -EINVAL; 9558 9559 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 9560 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 9561 return -EINVAL; 9562 9563 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 9564 rdev->wiphy.wowlan->tcp->data_interval_max || 9565 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 9566 return -EINVAL; 9567 9568 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 9569 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 9570 return -EINVAL; 9571 9572 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 9573 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 9574 return -EINVAL; 9575 9576 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 9577 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9578 9579 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9580 tokens_size = tokln - sizeof(*tok); 9581 9582 if (!tok->len || tokens_size % tok->len) 9583 return -EINVAL; 9584 if (!rdev->wiphy.wowlan->tcp->tok) 9585 return -EINVAL; 9586 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 9587 return -EINVAL; 9588 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 9589 return -EINVAL; 9590 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 9591 return -EINVAL; 9592 if (tok->offset + tok->len > data_size) 9593 return -EINVAL; 9594 } 9595 9596 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 9597 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 9598 if (!rdev->wiphy.wowlan->tcp->seq) 9599 return -EINVAL; 9600 if (seq->len == 0 || seq->len > 4) 9601 return -EINVAL; 9602 if (seq->len + seq->offset > data_size) 9603 return -EINVAL; 9604 } 9605 9606 size = sizeof(*cfg); 9607 size += data_size; 9608 size += wake_size + wake_mask_size; 9609 size += tokens_size; 9610 9611 cfg = kzalloc(size, GFP_KERNEL); 9612 if (!cfg) 9613 return -ENOMEM; 9614 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 9615 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 9616 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 9617 ETH_ALEN); 9618 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9619 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9620 else 9621 port = 0; 9622 #ifdef CONFIG_INET 9623 /* allocate a socket and port for it and use it */ 9624 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9625 IPPROTO_TCP, &cfg->sock, 1); 9626 if (err) { 9627 kfree(cfg); 9628 return err; 9629 } 9630 if (inet_csk_get_port(cfg->sock->sk, port)) { 9631 sock_release(cfg->sock); 9632 kfree(cfg); 9633 return -EADDRINUSE; 9634 } 9635 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9636 #else 9637 if (!port) { 9638 kfree(cfg); 9639 return -EINVAL; 9640 } 9641 cfg->src_port = port; 9642 #endif 9643 9644 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9645 cfg->payload_len = data_size; 9646 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9647 memcpy((void *)cfg->payload, 9648 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9649 data_size); 9650 if (seq) 9651 cfg->payload_seq = *seq; 9652 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9653 cfg->wake_len = wake_size; 9654 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9655 memcpy((void *)cfg->wake_data, 9656 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9657 wake_size); 9658 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9659 data_size + wake_size; 9660 memcpy((void *)cfg->wake_mask, 9661 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9662 wake_mask_size); 9663 if (tok) { 9664 cfg->tokens_size = tokens_size; 9665 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9666 } 9667 9668 trig->tcp = cfg; 9669 9670 return 0; 9671 } 9672 9673 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9674 const struct wiphy_wowlan_support *wowlan, 9675 struct nlattr *attr, 9676 struct cfg80211_wowlan *trig) 9677 { 9678 struct nlattr **tb; 9679 int err; 9680 9681 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9682 if (!tb) 9683 return -ENOMEM; 9684 9685 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9686 err = -EOPNOTSUPP; 9687 goto out; 9688 } 9689 9690 err = nla_parse(tb, NL80211_ATTR_MAX, 9691 nla_data(attr), nla_len(attr), 9692 nl80211_policy); 9693 if (err) 9694 goto out; 9695 9696 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9697 err = PTR_ERR_OR_ZERO(trig->nd_config); 9698 if (err) 9699 trig->nd_config = NULL; 9700 9701 out: 9702 kfree(tb); 9703 return err; 9704 } 9705 9706 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9707 { 9708 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9709 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9710 struct cfg80211_wowlan new_triggers = {}; 9711 struct cfg80211_wowlan *ntrig; 9712 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9713 int err, i; 9714 bool prev_enabled = rdev->wiphy.wowlan_config; 9715 bool regular = false; 9716 9717 if (!wowlan) 9718 return -EOPNOTSUPP; 9719 9720 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9721 cfg80211_rdev_free_wowlan(rdev); 9722 rdev->wiphy.wowlan_config = NULL; 9723 goto set_wakeup; 9724 } 9725 9726 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9727 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9728 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9729 nl80211_wowlan_policy); 9730 if (err) 9731 return err; 9732 9733 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9734 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9735 return -EINVAL; 9736 new_triggers.any = true; 9737 } 9738 9739 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9740 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9741 return -EINVAL; 9742 new_triggers.disconnect = true; 9743 regular = true; 9744 } 9745 9746 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9747 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9748 return -EINVAL; 9749 new_triggers.magic_pkt = true; 9750 regular = true; 9751 } 9752 9753 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9754 return -EINVAL; 9755 9756 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9757 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9758 return -EINVAL; 9759 new_triggers.gtk_rekey_failure = true; 9760 regular = true; 9761 } 9762 9763 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9764 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9765 return -EINVAL; 9766 new_triggers.eap_identity_req = true; 9767 regular = true; 9768 } 9769 9770 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9771 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9772 return -EINVAL; 9773 new_triggers.four_way_handshake = true; 9774 regular = true; 9775 } 9776 9777 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9778 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9779 return -EINVAL; 9780 new_triggers.rfkill_release = true; 9781 regular = true; 9782 } 9783 9784 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9785 struct nlattr *pat; 9786 int n_patterns = 0; 9787 int rem, pat_len, mask_len, pkt_offset; 9788 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9789 9790 regular = true; 9791 9792 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9793 rem) 9794 n_patterns++; 9795 if (n_patterns > wowlan->n_patterns) 9796 return -EINVAL; 9797 9798 new_triggers.patterns = kcalloc(n_patterns, 9799 sizeof(new_triggers.patterns[0]), 9800 GFP_KERNEL); 9801 if (!new_triggers.patterns) 9802 return -ENOMEM; 9803 9804 new_triggers.n_patterns = n_patterns; 9805 i = 0; 9806 9807 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9808 rem) { 9809 u8 *mask_pat; 9810 9811 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9812 nla_len(pat), NULL); 9813 err = -EINVAL; 9814 if (!pat_tb[NL80211_PKTPAT_MASK] || 9815 !pat_tb[NL80211_PKTPAT_PATTERN]) 9816 goto error; 9817 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9818 mask_len = DIV_ROUND_UP(pat_len, 8); 9819 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9820 goto error; 9821 if (pat_len > wowlan->pattern_max_len || 9822 pat_len < wowlan->pattern_min_len) 9823 goto error; 9824 9825 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9826 pkt_offset = 0; 9827 else 9828 pkt_offset = nla_get_u32( 9829 pat_tb[NL80211_PKTPAT_OFFSET]); 9830 if (pkt_offset > wowlan->max_pkt_offset) 9831 goto error; 9832 new_triggers.patterns[i].pkt_offset = pkt_offset; 9833 9834 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9835 if (!mask_pat) { 9836 err = -ENOMEM; 9837 goto error; 9838 } 9839 new_triggers.patterns[i].mask = mask_pat; 9840 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9841 mask_len); 9842 mask_pat += mask_len; 9843 new_triggers.patterns[i].pattern = mask_pat; 9844 new_triggers.patterns[i].pattern_len = pat_len; 9845 memcpy(mask_pat, 9846 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9847 pat_len); 9848 i++; 9849 } 9850 } 9851 9852 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9853 regular = true; 9854 err = nl80211_parse_wowlan_tcp( 9855 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9856 &new_triggers); 9857 if (err) 9858 goto error; 9859 } 9860 9861 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9862 regular = true; 9863 err = nl80211_parse_wowlan_nd( 9864 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9865 &new_triggers); 9866 if (err) 9867 goto error; 9868 } 9869 9870 /* The 'any' trigger means the device continues operating more or less 9871 * as in its normal operation mode and wakes up the host on most of the 9872 * normal interrupts (like packet RX, ...) 9873 * It therefore makes little sense to combine with the more constrained 9874 * wakeup trigger modes. 9875 */ 9876 if (new_triggers.any && regular) { 9877 err = -EINVAL; 9878 goto error; 9879 } 9880 9881 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9882 if (!ntrig) { 9883 err = -ENOMEM; 9884 goto error; 9885 } 9886 cfg80211_rdev_free_wowlan(rdev); 9887 rdev->wiphy.wowlan_config = ntrig; 9888 9889 set_wakeup: 9890 if (rdev->ops->set_wakeup && 9891 prev_enabled != !!rdev->wiphy.wowlan_config) 9892 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9893 9894 return 0; 9895 error: 9896 for (i = 0; i < new_triggers.n_patterns; i++) 9897 kfree(new_triggers.patterns[i].mask); 9898 kfree(new_triggers.patterns); 9899 if (new_triggers.tcp && new_triggers.tcp->sock) 9900 sock_release(new_triggers.tcp->sock); 9901 kfree(new_triggers.tcp); 9902 kfree(new_triggers.nd_config); 9903 return err; 9904 } 9905 #endif 9906 9907 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9908 struct cfg80211_registered_device *rdev) 9909 { 9910 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9911 int i, j, pat_len; 9912 struct cfg80211_coalesce_rules *rule; 9913 9914 if (!rdev->coalesce->n_rules) 9915 return 0; 9916 9917 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9918 if (!nl_rules) 9919 return -ENOBUFS; 9920 9921 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9922 nl_rule = nla_nest_start(msg, i + 1); 9923 if (!nl_rule) 9924 return -ENOBUFS; 9925 9926 rule = &rdev->coalesce->rules[i]; 9927 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9928 rule->delay)) 9929 return -ENOBUFS; 9930 9931 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9932 rule->condition)) 9933 return -ENOBUFS; 9934 9935 nl_pats = nla_nest_start(msg, 9936 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9937 if (!nl_pats) 9938 return -ENOBUFS; 9939 9940 for (j = 0; j < rule->n_patterns; j++) { 9941 nl_pat = nla_nest_start(msg, j + 1); 9942 if (!nl_pat) 9943 return -ENOBUFS; 9944 pat_len = rule->patterns[j].pattern_len; 9945 if (nla_put(msg, NL80211_PKTPAT_MASK, 9946 DIV_ROUND_UP(pat_len, 8), 9947 rule->patterns[j].mask) || 9948 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9949 rule->patterns[j].pattern) || 9950 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9951 rule->patterns[j].pkt_offset)) 9952 return -ENOBUFS; 9953 nla_nest_end(msg, nl_pat); 9954 } 9955 nla_nest_end(msg, nl_pats); 9956 nla_nest_end(msg, nl_rule); 9957 } 9958 nla_nest_end(msg, nl_rules); 9959 9960 return 0; 9961 } 9962 9963 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9964 { 9965 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9966 struct sk_buff *msg; 9967 void *hdr; 9968 9969 if (!rdev->wiphy.coalesce) 9970 return -EOPNOTSUPP; 9971 9972 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9973 if (!msg) 9974 return -ENOMEM; 9975 9976 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9977 NL80211_CMD_GET_COALESCE); 9978 if (!hdr) 9979 goto nla_put_failure; 9980 9981 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9982 goto nla_put_failure; 9983 9984 genlmsg_end(msg, hdr); 9985 return genlmsg_reply(msg, info); 9986 9987 nla_put_failure: 9988 nlmsg_free(msg); 9989 return -ENOBUFS; 9990 } 9991 9992 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9993 { 9994 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9995 int i, j; 9996 struct cfg80211_coalesce_rules *rule; 9997 9998 if (!coalesce) 9999 return; 10000 10001 for (i = 0; i < coalesce->n_rules; i++) { 10002 rule = &coalesce->rules[i]; 10003 for (j = 0; j < rule->n_patterns; j++) 10004 kfree(rule->patterns[j].mask); 10005 kfree(rule->patterns); 10006 } 10007 kfree(coalesce->rules); 10008 kfree(coalesce); 10009 rdev->coalesce = NULL; 10010 } 10011 10012 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 10013 struct nlattr *rule, 10014 struct cfg80211_coalesce_rules *new_rule) 10015 { 10016 int err, i; 10017 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10018 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 10019 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 10020 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 10021 10022 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 10023 nla_len(rule), nl80211_coalesce_policy); 10024 if (err) 10025 return err; 10026 10027 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 10028 new_rule->delay = 10029 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 10030 if (new_rule->delay > coalesce->max_delay) 10031 return -EINVAL; 10032 10033 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 10034 new_rule->condition = 10035 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 10036 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 10037 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 10038 return -EINVAL; 10039 10040 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 10041 return -EINVAL; 10042 10043 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10044 rem) 10045 n_patterns++; 10046 if (n_patterns > coalesce->n_patterns) 10047 return -EINVAL; 10048 10049 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 10050 GFP_KERNEL); 10051 if (!new_rule->patterns) 10052 return -ENOMEM; 10053 10054 new_rule->n_patterns = n_patterns; 10055 i = 0; 10056 10057 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10058 rem) { 10059 u8 *mask_pat; 10060 10061 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 10062 nla_len(pat), NULL); 10063 if (!pat_tb[NL80211_PKTPAT_MASK] || 10064 !pat_tb[NL80211_PKTPAT_PATTERN]) 10065 return -EINVAL; 10066 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10067 mask_len = DIV_ROUND_UP(pat_len, 8); 10068 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10069 return -EINVAL; 10070 if (pat_len > coalesce->pattern_max_len || 10071 pat_len < coalesce->pattern_min_len) 10072 return -EINVAL; 10073 10074 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10075 pkt_offset = 0; 10076 else 10077 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 10078 if (pkt_offset > coalesce->max_pkt_offset) 10079 return -EINVAL; 10080 new_rule->patterns[i].pkt_offset = pkt_offset; 10081 10082 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10083 if (!mask_pat) 10084 return -ENOMEM; 10085 10086 new_rule->patterns[i].mask = mask_pat; 10087 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10088 mask_len); 10089 10090 mask_pat += mask_len; 10091 new_rule->patterns[i].pattern = mask_pat; 10092 new_rule->patterns[i].pattern_len = pat_len; 10093 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10094 pat_len); 10095 i++; 10096 } 10097 10098 return 0; 10099 } 10100 10101 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 10102 { 10103 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10104 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10105 struct cfg80211_coalesce new_coalesce = {}; 10106 struct cfg80211_coalesce *n_coalesce; 10107 int err, rem_rule, n_rules = 0, i, j; 10108 struct nlattr *rule; 10109 struct cfg80211_coalesce_rules *tmp_rule; 10110 10111 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 10112 return -EOPNOTSUPP; 10113 10114 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 10115 cfg80211_rdev_free_coalesce(rdev); 10116 rdev_set_coalesce(rdev, NULL); 10117 return 0; 10118 } 10119 10120 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10121 rem_rule) 10122 n_rules++; 10123 if (n_rules > coalesce->n_rules) 10124 return -EINVAL; 10125 10126 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 10127 GFP_KERNEL); 10128 if (!new_coalesce.rules) 10129 return -ENOMEM; 10130 10131 new_coalesce.n_rules = n_rules; 10132 i = 0; 10133 10134 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10135 rem_rule) { 10136 err = nl80211_parse_coalesce_rule(rdev, rule, 10137 &new_coalesce.rules[i]); 10138 if (err) 10139 goto error; 10140 10141 i++; 10142 } 10143 10144 err = rdev_set_coalesce(rdev, &new_coalesce); 10145 if (err) 10146 goto error; 10147 10148 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 10149 if (!n_coalesce) { 10150 err = -ENOMEM; 10151 goto error; 10152 } 10153 cfg80211_rdev_free_coalesce(rdev); 10154 rdev->coalesce = n_coalesce; 10155 10156 return 0; 10157 error: 10158 for (i = 0; i < new_coalesce.n_rules; i++) { 10159 tmp_rule = &new_coalesce.rules[i]; 10160 for (j = 0; j < tmp_rule->n_patterns; j++) 10161 kfree(tmp_rule->patterns[j].mask); 10162 kfree(tmp_rule->patterns); 10163 } 10164 kfree(new_coalesce.rules); 10165 10166 return err; 10167 } 10168 10169 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 10170 { 10171 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10172 struct net_device *dev = info->user_ptr[1]; 10173 struct wireless_dev *wdev = dev->ieee80211_ptr; 10174 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 10175 struct cfg80211_gtk_rekey_data rekey_data; 10176 int err; 10177 10178 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 10179 return -EINVAL; 10180 10181 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 10182 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 10183 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 10184 nl80211_rekey_policy); 10185 if (err) 10186 return err; 10187 10188 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 10189 return -ERANGE; 10190 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 10191 return -ERANGE; 10192 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 10193 return -ERANGE; 10194 10195 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 10196 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 10197 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 10198 10199 wdev_lock(wdev); 10200 if (!wdev->current_bss) { 10201 err = -ENOTCONN; 10202 goto out; 10203 } 10204 10205 if (!rdev->ops->set_rekey_data) { 10206 err = -EOPNOTSUPP; 10207 goto out; 10208 } 10209 10210 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 10211 out: 10212 wdev_unlock(wdev); 10213 return err; 10214 } 10215 10216 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 10217 struct genl_info *info) 10218 { 10219 struct net_device *dev = info->user_ptr[1]; 10220 struct wireless_dev *wdev = dev->ieee80211_ptr; 10221 10222 if (wdev->iftype != NL80211_IFTYPE_AP && 10223 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10224 return -EINVAL; 10225 10226 if (wdev->ap_unexpected_nlportid) 10227 return -EBUSY; 10228 10229 wdev->ap_unexpected_nlportid = info->snd_portid; 10230 return 0; 10231 } 10232 10233 static int nl80211_probe_client(struct sk_buff *skb, 10234 struct genl_info *info) 10235 { 10236 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10237 struct net_device *dev = info->user_ptr[1]; 10238 struct wireless_dev *wdev = dev->ieee80211_ptr; 10239 struct sk_buff *msg; 10240 void *hdr; 10241 const u8 *addr; 10242 u64 cookie; 10243 int err; 10244 10245 if (wdev->iftype != NL80211_IFTYPE_AP && 10246 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10247 return -EOPNOTSUPP; 10248 10249 if (!info->attrs[NL80211_ATTR_MAC]) 10250 return -EINVAL; 10251 10252 if (!rdev->ops->probe_client) 10253 return -EOPNOTSUPP; 10254 10255 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10256 if (!msg) 10257 return -ENOMEM; 10258 10259 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10260 NL80211_CMD_PROBE_CLIENT); 10261 if (!hdr) { 10262 err = -ENOBUFS; 10263 goto free_msg; 10264 } 10265 10266 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10267 10268 err = rdev_probe_client(rdev, dev, addr, &cookie); 10269 if (err) 10270 goto free_msg; 10271 10272 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 10273 NL80211_ATTR_PAD)) 10274 goto nla_put_failure; 10275 10276 genlmsg_end(msg, hdr); 10277 10278 return genlmsg_reply(msg, info); 10279 10280 nla_put_failure: 10281 err = -ENOBUFS; 10282 free_msg: 10283 nlmsg_free(msg); 10284 return err; 10285 } 10286 10287 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 10288 { 10289 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10290 struct cfg80211_beacon_registration *reg, *nreg; 10291 int rv; 10292 10293 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 10294 return -EOPNOTSUPP; 10295 10296 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 10297 if (!nreg) 10298 return -ENOMEM; 10299 10300 /* First, check if already registered. */ 10301 spin_lock_bh(&rdev->beacon_registrations_lock); 10302 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 10303 if (reg->nlportid == info->snd_portid) { 10304 rv = -EALREADY; 10305 goto out_err; 10306 } 10307 } 10308 /* Add it to the list */ 10309 nreg->nlportid = info->snd_portid; 10310 list_add(&nreg->list, &rdev->beacon_registrations); 10311 10312 spin_unlock_bh(&rdev->beacon_registrations_lock); 10313 10314 return 0; 10315 out_err: 10316 spin_unlock_bh(&rdev->beacon_registrations_lock); 10317 kfree(nreg); 10318 return rv; 10319 } 10320 10321 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 10322 { 10323 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10324 struct wireless_dev *wdev = info->user_ptr[1]; 10325 int err; 10326 10327 if (!rdev->ops->start_p2p_device) 10328 return -EOPNOTSUPP; 10329 10330 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 10331 return -EOPNOTSUPP; 10332 10333 if (wdev->p2p_started) 10334 return 0; 10335 10336 if (rfkill_blocked(rdev->rfkill)) 10337 return -ERFKILL; 10338 10339 err = rdev_start_p2p_device(rdev, wdev); 10340 if (err) 10341 return err; 10342 10343 wdev->p2p_started = true; 10344 rdev->opencount++; 10345 10346 return 0; 10347 } 10348 10349 static int nl80211_stop_p2p_device(struct sk_buff *skb, struct genl_info *info) 10350 { 10351 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10352 struct wireless_dev *wdev = info->user_ptr[1]; 10353 10354 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 10355 return -EOPNOTSUPP; 10356 10357 if (!rdev->ops->stop_p2p_device) 10358 return -EOPNOTSUPP; 10359 10360 cfg80211_stop_p2p_device(rdev, wdev); 10361 10362 return 0; 10363 } 10364 10365 static int nl80211_get_protocol_features(struct sk_buff *skb, 10366 struct genl_info *info) 10367 { 10368 void *hdr; 10369 struct sk_buff *msg; 10370 10371 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10372 if (!msg) 10373 return -ENOMEM; 10374 10375 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10376 NL80211_CMD_GET_PROTOCOL_FEATURES); 10377 if (!hdr) 10378 goto nla_put_failure; 10379 10380 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 10381 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 10382 goto nla_put_failure; 10383 10384 genlmsg_end(msg, hdr); 10385 return genlmsg_reply(msg, info); 10386 10387 nla_put_failure: 10388 kfree_skb(msg); 10389 return -ENOBUFS; 10390 } 10391 10392 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 10393 { 10394 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10395 struct cfg80211_update_ft_ies_params ft_params; 10396 struct net_device *dev = info->user_ptr[1]; 10397 10398 if (!rdev->ops->update_ft_ies) 10399 return -EOPNOTSUPP; 10400 10401 if (!info->attrs[NL80211_ATTR_MDID] || 10402 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 10403 return -EINVAL; 10404 10405 memset(&ft_params, 0, sizeof(ft_params)); 10406 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 10407 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10408 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10409 10410 return rdev_update_ft_ies(rdev, dev, &ft_params); 10411 } 10412 10413 static int nl80211_crit_protocol_start(struct sk_buff *skb, 10414 struct genl_info *info) 10415 { 10416 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10417 struct wireless_dev *wdev = info->user_ptr[1]; 10418 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 10419 u16 duration; 10420 int ret; 10421 10422 if (!rdev->ops->crit_proto_start) 10423 return -EOPNOTSUPP; 10424 10425 if (WARN_ON(!rdev->ops->crit_proto_stop)) 10426 return -EINVAL; 10427 10428 if (rdev->crit_proto_nlportid) 10429 return -EBUSY; 10430 10431 /* determine protocol if provided */ 10432 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 10433 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 10434 10435 if (proto >= NUM_NL80211_CRIT_PROTO) 10436 return -EINVAL; 10437 10438 /* timeout must be provided */ 10439 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 10440 return -EINVAL; 10441 10442 duration = 10443 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 10444 10445 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 10446 return -ERANGE; 10447 10448 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 10449 if (!ret) 10450 rdev->crit_proto_nlportid = info->snd_portid; 10451 10452 return ret; 10453 } 10454 10455 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 10456 struct genl_info *info) 10457 { 10458 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10459 struct wireless_dev *wdev = info->user_ptr[1]; 10460 10461 if (!rdev->ops->crit_proto_stop) 10462 return -EOPNOTSUPP; 10463 10464 if (rdev->crit_proto_nlportid) { 10465 rdev->crit_proto_nlportid = 0; 10466 rdev_crit_proto_stop(rdev, wdev); 10467 } 10468 return 0; 10469 } 10470 10471 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 10472 { 10473 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10474 struct wireless_dev *wdev = 10475 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 10476 int i, err; 10477 u32 vid, subcmd; 10478 10479 if (!rdev->wiphy.vendor_commands) 10480 return -EOPNOTSUPP; 10481 10482 if (IS_ERR(wdev)) { 10483 err = PTR_ERR(wdev); 10484 if (err != -EINVAL) 10485 return err; 10486 wdev = NULL; 10487 } else if (wdev->wiphy != &rdev->wiphy) { 10488 return -EINVAL; 10489 } 10490 10491 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 10492 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 10493 return -EINVAL; 10494 10495 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 10496 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 10497 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 10498 const struct wiphy_vendor_command *vcmd; 10499 void *data = NULL; 10500 int len = 0; 10501 10502 vcmd = &rdev->wiphy.vendor_commands[i]; 10503 10504 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10505 continue; 10506 10507 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10508 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10509 if (!wdev) 10510 return -EINVAL; 10511 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10512 !wdev->netdev) 10513 return -EINVAL; 10514 10515 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10516 if (wdev->netdev && 10517 !netif_running(wdev->netdev)) 10518 return -ENETDOWN; 10519 if (!wdev->netdev && !wdev->p2p_started) 10520 return -ENETDOWN; 10521 } 10522 10523 if (!vcmd->doit) 10524 return -EOPNOTSUPP; 10525 } else { 10526 wdev = NULL; 10527 } 10528 10529 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 10530 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10531 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10532 } 10533 10534 rdev->cur_cmd_info = info; 10535 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 10536 data, len); 10537 rdev->cur_cmd_info = NULL; 10538 return err; 10539 } 10540 10541 return -EOPNOTSUPP; 10542 } 10543 10544 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 10545 struct netlink_callback *cb, 10546 struct cfg80211_registered_device **rdev, 10547 struct wireless_dev **wdev) 10548 { 10549 u32 vid, subcmd; 10550 unsigned int i; 10551 int vcmd_idx = -1; 10552 int err; 10553 void *data = NULL; 10554 unsigned int data_len = 0; 10555 10556 rtnl_lock(); 10557 10558 if (cb->args[0]) { 10559 /* subtract the 1 again here */ 10560 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 10561 struct wireless_dev *tmp; 10562 10563 if (!wiphy) { 10564 err = -ENODEV; 10565 goto out_unlock; 10566 } 10567 *rdev = wiphy_to_rdev(wiphy); 10568 *wdev = NULL; 10569 10570 if (cb->args[1]) { 10571 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 10572 if (tmp->identifier == cb->args[1] - 1) { 10573 *wdev = tmp; 10574 break; 10575 } 10576 } 10577 } 10578 10579 /* keep rtnl locked in successful case */ 10580 return 0; 10581 } 10582 10583 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 10584 nl80211_fam.attrbuf, nl80211_fam.maxattr, 10585 nl80211_policy); 10586 if (err) 10587 goto out_unlock; 10588 10589 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] || 10590 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) { 10591 err = -EINVAL; 10592 goto out_unlock; 10593 } 10594 10595 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 10596 nl80211_fam.attrbuf); 10597 if (IS_ERR(*wdev)) 10598 *wdev = NULL; 10599 10600 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 10601 nl80211_fam.attrbuf); 10602 if (IS_ERR(*rdev)) { 10603 err = PTR_ERR(*rdev); 10604 goto out_unlock; 10605 } 10606 10607 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]); 10608 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 10609 10610 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 10611 const struct wiphy_vendor_command *vcmd; 10612 10613 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 10614 10615 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10616 continue; 10617 10618 if (!vcmd->dumpit) { 10619 err = -EOPNOTSUPP; 10620 goto out_unlock; 10621 } 10622 10623 vcmd_idx = i; 10624 break; 10625 } 10626 10627 if (vcmd_idx < 0) { 10628 err = -EOPNOTSUPP; 10629 goto out_unlock; 10630 } 10631 10632 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) { 10633 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10634 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10635 } 10636 10637 /* 0 is the first index - add 1 to parse only once */ 10638 cb->args[0] = (*rdev)->wiphy_idx + 1; 10639 /* add 1 to know if it was NULL */ 10640 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 10641 cb->args[2] = vcmd_idx; 10642 cb->args[3] = (unsigned long)data; 10643 cb->args[4] = data_len; 10644 10645 /* keep rtnl locked in successful case */ 10646 return 0; 10647 out_unlock: 10648 rtnl_unlock(); 10649 return err; 10650 } 10651 10652 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 10653 struct netlink_callback *cb) 10654 { 10655 struct cfg80211_registered_device *rdev; 10656 struct wireless_dev *wdev; 10657 unsigned int vcmd_idx; 10658 const struct wiphy_vendor_command *vcmd; 10659 void *data; 10660 int data_len; 10661 int err; 10662 struct nlattr *vendor_data; 10663 10664 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 10665 if (err) 10666 return err; 10667 10668 vcmd_idx = cb->args[2]; 10669 data = (void *)cb->args[3]; 10670 data_len = cb->args[4]; 10671 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 10672 10673 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10674 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10675 if (!wdev) 10676 return -EINVAL; 10677 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10678 !wdev->netdev) 10679 return -EINVAL; 10680 10681 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10682 if (wdev->netdev && 10683 !netif_running(wdev->netdev)) 10684 return -ENETDOWN; 10685 if (!wdev->netdev && !wdev->p2p_started) 10686 return -ENETDOWN; 10687 } 10688 } 10689 10690 while (1) { 10691 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 10692 cb->nlh->nlmsg_seq, NLM_F_MULTI, 10693 NL80211_CMD_VENDOR); 10694 if (!hdr) 10695 break; 10696 10697 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10698 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 10699 wdev_id(wdev), 10700 NL80211_ATTR_PAD))) { 10701 genlmsg_cancel(skb, hdr); 10702 break; 10703 } 10704 10705 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 10706 if (!vendor_data) { 10707 genlmsg_cancel(skb, hdr); 10708 break; 10709 } 10710 10711 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 10712 (unsigned long *)&cb->args[5]); 10713 nla_nest_end(skb, vendor_data); 10714 10715 if (err == -ENOBUFS || err == -ENOENT) { 10716 genlmsg_cancel(skb, hdr); 10717 break; 10718 } else if (err) { 10719 genlmsg_cancel(skb, hdr); 10720 goto out; 10721 } 10722 10723 genlmsg_end(skb, hdr); 10724 } 10725 10726 err = skb->len; 10727 out: 10728 rtnl_unlock(); 10729 return err; 10730 } 10731 10732 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 10733 enum nl80211_commands cmd, 10734 enum nl80211_attrs attr, 10735 int approxlen) 10736 { 10737 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 10738 10739 if (WARN_ON(!rdev->cur_cmd_info)) 10740 return NULL; 10741 10742 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 10743 rdev->cur_cmd_info->snd_portid, 10744 rdev->cur_cmd_info->snd_seq, 10745 cmd, attr, NULL, GFP_KERNEL); 10746 } 10747 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 10748 10749 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 10750 { 10751 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 10752 void *hdr = ((void **)skb->cb)[1]; 10753 struct nlattr *data = ((void **)skb->cb)[2]; 10754 10755 /* clear CB data for netlink core to own from now on */ 10756 memset(skb->cb, 0, sizeof(skb->cb)); 10757 10758 if (WARN_ON(!rdev->cur_cmd_info)) { 10759 kfree_skb(skb); 10760 return -EINVAL; 10761 } 10762 10763 nla_nest_end(skb, data); 10764 genlmsg_end(skb, hdr); 10765 return genlmsg_reply(skb, rdev->cur_cmd_info); 10766 } 10767 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 10768 10769 static int nl80211_set_qos_map(struct sk_buff *skb, 10770 struct genl_info *info) 10771 { 10772 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10773 struct cfg80211_qos_map *qos_map = NULL; 10774 struct net_device *dev = info->user_ptr[1]; 10775 u8 *pos, len, num_des, des_len, des; 10776 int ret; 10777 10778 if (!rdev->ops->set_qos_map) 10779 return -EOPNOTSUPP; 10780 10781 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 10782 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 10783 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 10784 10785 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 10786 len > IEEE80211_QOS_MAP_LEN_MAX) 10787 return -EINVAL; 10788 10789 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 10790 if (!qos_map) 10791 return -ENOMEM; 10792 10793 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 10794 if (num_des) { 10795 des_len = num_des * 10796 sizeof(struct cfg80211_dscp_exception); 10797 memcpy(qos_map->dscp_exception, pos, des_len); 10798 qos_map->num_des = num_des; 10799 for (des = 0; des < num_des; des++) { 10800 if (qos_map->dscp_exception[des].up > 7) { 10801 kfree(qos_map); 10802 return -EINVAL; 10803 } 10804 } 10805 pos += des_len; 10806 } 10807 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 10808 } 10809 10810 wdev_lock(dev->ieee80211_ptr); 10811 ret = nl80211_key_allowed(dev->ieee80211_ptr); 10812 if (!ret) 10813 ret = rdev_set_qos_map(rdev, dev, qos_map); 10814 wdev_unlock(dev->ieee80211_ptr); 10815 10816 kfree(qos_map); 10817 return ret; 10818 } 10819 10820 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 10821 { 10822 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10823 struct net_device *dev = info->user_ptr[1]; 10824 struct wireless_dev *wdev = dev->ieee80211_ptr; 10825 const u8 *peer; 10826 u8 tsid, up; 10827 u16 admitted_time = 0; 10828 int err; 10829 10830 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 10831 return -EOPNOTSUPP; 10832 10833 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10834 !info->attrs[NL80211_ATTR_USER_PRIO]) 10835 return -EINVAL; 10836 10837 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10838 if (tsid >= IEEE80211_NUM_TIDS) 10839 return -EINVAL; 10840 10841 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10842 if (up >= IEEE80211_NUM_UPS) 10843 return -EINVAL; 10844 10845 /* WMM uses TIDs 0-7 even for TSPEC */ 10846 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10847 /* TODO: handle 802.11 TSPEC/admission control 10848 * need more attributes for that (e.g. BA session requirement); 10849 * change the WMM adminssion test above to allow both then 10850 */ 10851 return -EINVAL; 10852 } 10853 10854 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10855 10856 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10857 admitted_time = 10858 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10859 if (!admitted_time) 10860 return -EINVAL; 10861 } 10862 10863 wdev_lock(wdev); 10864 switch (wdev->iftype) { 10865 case NL80211_IFTYPE_STATION: 10866 case NL80211_IFTYPE_P2P_CLIENT: 10867 if (wdev->current_bss) 10868 break; 10869 err = -ENOTCONN; 10870 goto out; 10871 default: 10872 err = -EOPNOTSUPP; 10873 goto out; 10874 } 10875 10876 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10877 10878 out: 10879 wdev_unlock(wdev); 10880 return err; 10881 } 10882 10883 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10884 { 10885 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10886 struct net_device *dev = info->user_ptr[1]; 10887 struct wireless_dev *wdev = dev->ieee80211_ptr; 10888 const u8 *peer; 10889 u8 tsid; 10890 int err; 10891 10892 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10893 return -EINVAL; 10894 10895 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10896 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10897 10898 wdev_lock(wdev); 10899 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10900 wdev_unlock(wdev); 10901 10902 return err; 10903 } 10904 10905 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10906 struct genl_info *info) 10907 { 10908 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10909 struct net_device *dev = info->user_ptr[1]; 10910 struct wireless_dev *wdev = dev->ieee80211_ptr; 10911 struct cfg80211_chan_def chandef = {}; 10912 const u8 *addr; 10913 u8 oper_class; 10914 int err; 10915 10916 if (!rdev->ops->tdls_channel_switch || 10917 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10918 return -EOPNOTSUPP; 10919 10920 switch (dev->ieee80211_ptr->iftype) { 10921 case NL80211_IFTYPE_STATION: 10922 case NL80211_IFTYPE_P2P_CLIENT: 10923 break; 10924 default: 10925 return -EOPNOTSUPP; 10926 } 10927 10928 if (!info->attrs[NL80211_ATTR_MAC] || 10929 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10930 return -EINVAL; 10931 10932 err = nl80211_parse_chandef(rdev, info, &chandef); 10933 if (err) 10934 return err; 10935 10936 /* 10937 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10938 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10939 * specification is not defined for them. 10940 */ 10941 if (chandef.chan->band == NL80211_BAND_2GHZ && 10942 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10943 chandef.width != NL80211_CHAN_WIDTH_20) 10944 return -EINVAL; 10945 10946 /* we will be active on the TDLS link */ 10947 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 10948 wdev->iftype)) 10949 return -EINVAL; 10950 10951 /* don't allow switching to DFS channels */ 10952 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10953 return -EINVAL; 10954 10955 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10956 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10957 10958 wdev_lock(wdev); 10959 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10960 wdev_unlock(wdev); 10961 10962 return err; 10963 } 10964 10965 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10966 struct genl_info *info) 10967 { 10968 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10969 struct net_device *dev = info->user_ptr[1]; 10970 struct wireless_dev *wdev = dev->ieee80211_ptr; 10971 const u8 *addr; 10972 10973 if (!rdev->ops->tdls_channel_switch || 10974 !rdev->ops->tdls_cancel_channel_switch || 10975 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10976 return -EOPNOTSUPP; 10977 10978 switch (dev->ieee80211_ptr->iftype) { 10979 case NL80211_IFTYPE_STATION: 10980 case NL80211_IFTYPE_P2P_CLIENT: 10981 break; 10982 default: 10983 return -EOPNOTSUPP; 10984 } 10985 10986 if (!info->attrs[NL80211_ATTR_MAC]) 10987 return -EINVAL; 10988 10989 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10990 10991 wdev_lock(wdev); 10992 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10993 wdev_unlock(wdev); 10994 10995 return 0; 10996 } 10997 10998 #define NL80211_FLAG_NEED_WIPHY 0x01 10999 #define NL80211_FLAG_NEED_NETDEV 0x02 11000 #define NL80211_FLAG_NEED_RTNL 0x04 11001 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 11002 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 11003 NL80211_FLAG_CHECK_NETDEV_UP) 11004 #define NL80211_FLAG_NEED_WDEV 0x10 11005 /* If a netdev is associated, it must be UP, P2P must be started */ 11006 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 11007 NL80211_FLAG_CHECK_NETDEV_UP) 11008 #define NL80211_FLAG_CLEAR_SKB 0x20 11009 11010 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 11011 struct genl_info *info) 11012 { 11013 struct cfg80211_registered_device *rdev; 11014 struct wireless_dev *wdev; 11015 struct net_device *dev; 11016 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 11017 11018 if (rtnl) 11019 rtnl_lock(); 11020 11021 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 11022 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 11023 if (IS_ERR(rdev)) { 11024 if (rtnl) 11025 rtnl_unlock(); 11026 return PTR_ERR(rdev); 11027 } 11028 info->user_ptr[0] = rdev; 11029 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 11030 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 11031 ASSERT_RTNL(); 11032 11033 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 11034 info->attrs); 11035 if (IS_ERR(wdev)) { 11036 if (rtnl) 11037 rtnl_unlock(); 11038 return PTR_ERR(wdev); 11039 } 11040 11041 dev = wdev->netdev; 11042 rdev = wiphy_to_rdev(wdev->wiphy); 11043 11044 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 11045 if (!dev) { 11046 if (rtnl) 11047 rtnl_unlock(); 11048 return -EINVAL; 11049 } 11050 11051 info->user_ptr[1] = dev; 11052 } else { 11053 info->user_ptr[1] = wdev; 11054 } 11055 11056 if (dev) { 11057 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 11058 !netif_running(dev)) { 11059 if (rtnl) 11060 rtnl_unlock(); 11061 return -ENETDOWN; 11062 } 11063 11064 dev_hold(dev); 11065 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 11066 if (!wdev->p2p_started) { 11067 if (rtnl) 11068 rtnl_unlock(); 11069 return -ENETDOWN; 11070 } 11071 } 11072 11073 info->user_ptr[0] = rdev; 11074 } 11075 11076 return 0; 11077 } 11078 11079 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 11080 struct genl_info *info) 11081 { 11082 if (info->user_ptr[1]) { 11083 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 11084 struct wireless_dev *wdev = info->user_ptr[1]; 11085 11086 if (wdev->netdev) 11087 dev_put(wdev->netdev); 11088 } else { 11089 dev_put(info->user_ptr[1]); 11090 } 11091 } 11092 11093 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 11094 rtnl_unlock(); 11095 11096 /* If needed, clear the netlink message payload from the SKB 11097 * as it might contain key data that shouldn't stick around on 11098 * the heap after the SKB is freed. The netlink message header 11099 * is still needed for further processing, so leave it intact. 11100 */ 11101 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 11102 struct nlmsghdr *nlh = nlmsg_hdr(skb); 11103 11104 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 11105 } 11106 } 11107 11108 static const struct genl_ops nl80211_ops[] = { 11109 { 11110 .cmd = NL80211_CMD_GET_WIPHY, 11111 .doit = nl80211_get_wiphy, 11112 .dumpit = nl80211_dump_wiphy, 11113 .done = nl80211_dump_wiphy_done, 11114 .policy = nl80211_policy, 11115 /* can be retrieved by unprivileged users */ 11116 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11117 NL80211_FLAG_NEED_RTNL, 11118 }, 11119 { 11120 .cmd = NL80211_CMD_SET_WIPHY, 11121 .doit = nl80211_set_wiphy, 11122 .policy = nl80211_policy, 11123 .flags = GENL_UNS_ADMIN_PERM, 11124 .internal_flags = NL80211_FLAG_NEED_RTNL, 11125 }, 11126 { 11127 .cmd = NL80211_CMD_GET_INTERFACE, 11128 .doit = nl80211_get_interface, 11129 .dumpit = nl80211_dump_interface, 11130 .policy = nl80211_policy, 11131 /* can be retrieved by unprivileged users */ 11132 .internal_flags = NL80211_FLAG_NEED_WDEV | 11133 NL80211_FLAG_NEED_RTNL, 11134 }, 11135 { 11136 .cmd = NL80211_CMD_SET_INTERFACE, 11137 .doit = nl80211_set_interface, 11138 .policy = nl80211_policy, 11139 .flags = GENL_UNS_ADMIN_PERM, 11140 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11141 NL80211_FLAG_NEED_RTNL, 11142 }, 11143 { 11144 .cmd = NL80211_CMD_NEW_INTERFACE, 11145 .doit = nl80211_new_interface, 11146 .policy = nl80211_policy, 11147 .flags = GENL_UNS_ADMIN_PERM, 11148 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11149 NL80211_FLAG_NEED_RTNL, 11150 }, 11151 { 11152 .cmd = NL80211_CMD_DEL_INTERFACE, 11153 .doit = nl80211_del_interface, 11154 .policy = nl80211_policy, 11155 .flags = GENL_UNS_ADMIN_PERM, 11156 .internal_flags = NL80211_FLAG_NEED_WDEV | 11157 NL80211_FLAG_NEED_RTNL, 11158 }, 11159 { 11160 .cmd = NL80211_CMD_GET_KEY, 11161 .doit = nl80211_get_key, 11162 .policy = nl80211_policy, 11163 .flags = GENL_UNS_ADMIN_PERM, 11164 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11165 NL80211_FLAG_NEED_RTNL, 11166 }, 11167 { 11168 .cmd = NL80211_CMD_SET_KEY, 11169 .doit = nl80211_set_key, 11170 .policy = nl80211_policy, 11171 .flags = GENL_UNS_ADMIN_PERM, 11172 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11173 NL80211_FLAG_NEED_RTNL | 11174 NL80211_FLAG_CLEAR_SKB, 11175 }, 11176 { 11177 .cmd = NL80211_CMD_NEW_KEY, 11178 .doit = nl80211_new_key, 11179 .policy = nl80211_policy, 11180 .flags = GENL_UNS_ADMIN_PERM, 11181 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11182 NL80211_FLAG_NEED_RTNL | 11183 NL80211_FLAG_CLEAR_SKB, 11184 }, 11185 { 11186 .cmd = NL80211_CMD_DEL_KEY, 11187 .doit = nl80211_del_key, 11188 .policy = nl80211_policy, 11189 .flags = GENL_UNS_ADMIN_PERM, 11190 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11191 NL80211_FLAG_NEED_RTNL, 11192 }, 11193 { 11194 .cmd = NL80211_CMD_SET_BEACON, 11195 .policy = nl80211_policy, 11196 .flags = GENL_UNS_ADMIN_PERM, 11197 .doit = nl80211_set_beacon, 11198 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11199 NL80211_FLAG_NEED_RTNL, 11200 }, 11201 { 11202 .cmd = NL80211_CMD_START_AP, 11203 .policy = nl80211_policy, 11204 .flags = GENL_UNS_ADMIN_PERM, 11205 .doit = nl80211_start_ap, 11206 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11207 NL80211_FLAG_NEED_RTNL, 11208 }, 11209 { 11210 .cmd = NL80211_CMD_STOP_AP, 11211 .policy = nl80211_policy, 11212 .flags = GENL_UNS_ADMIN_PERM, 11213 .doit = nl80211_stop_ap, 11214 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11215 NL80211_FLAG_NEED_RTNL, 11216 }, 11217 { 11218 .cmd = NL80211_CMD_GET_STATION, 11219 .doit = nl80211_get_station, 11220 .dumpit = nl80211_dump_station, 11221 .policy = nl80211_policy, 11222 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11223 NL80211_FLAG_NEED_RTNL, 11224 }, 11225 { 11226 .cmd = NL80211_CMD_SET_STATION, 11227 .doit = nl80211_set_station, 11228 .policy = nl80211_policy, 11229 .flags = GENL_UNS_ADMIN_PERM, 11230 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11231 NL80211_FLAG_NEED_RTNL, 11232 }, 11233 { 11234 .cmd = NL80211_CMD_NEW_STATION, 11235 .doit = nl80211_new_station, 11236 .policy = nl80211_policy, 11237 .flags = GENL_UNS_ADMIN_PERM, 11238 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11239 NL80211_FLAG_NEED_RTNL, 11240 }, 11241 { 11242 .cmd = NL80211_CMD_DEL_STATION, 11243 .doit = nl80211_del_station, 11244 .policy = nl80211_policy, 11245 .flags = GENL_UNS_ADMIN_PERM, 11246 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11247 NL80211_FLAG_NEED_RTNL, 11248 }, 11249 { 11250 .cmd = NL80211_CMD_GET_MPATH, 11251 .doit = nl80211_get_mpath, 11252 .dumpit = nl80211_dump_mpath, 11253 .policy = nl80211_policy, 11254 .flags = GENL_UNS_ADMIN_PERM, 11255 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11256 NL80211_FLAG_NEED_RTNL, 11257 }, 11258 { 11259 .cmd = NL80211_CMD_GET_MPP, 11260 .doit = nl80211_get_mpp, 11261 .dumpit = nl80211_dump_mpp, 11262 .policy = nl80211_policy, 11263 .flags = GENL_UNS_ADMIN_PERM, 11264 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11265 NL80211_FLAG_NEED_RTNL, 11266 }, 11267 { 11268 .cmd = NL80211_CMD_SET_MPATH, 11269 .doit = nl80211_set_mpath, 11270 .policy = nl80211_policy, 11271 .flags = GENL_UNS_ADMIN_PERM, 11272 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11273 NL80211_FLAG_NEED_RTNL, 11274 }, 11275 { 11276 .cmd = NL80211_CMD_NEW_MPATH, 11277 .doit = nl80211_new_mpath, 11278 .policy = nl80211_policy, 11279 .flags = GENL_UNS_ADMIN_PERM, 11280 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11281 NL80211_FLAG_NEED_RTNL, 11282 }, 11283 { 11284 .cmd = NL80211_CMD_DEL_MPATH, 11285 .doit = nl80211_del_mpath, 11286 .policy = nl80211_policy, 11287 .flags = GENL_UNS_ADMIN_PERM, 11288 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11289 NL80211_FLAG_NEED_RTNL, 11290 }, 11291 { 11292 .cmd = NL80211_CMD_SET_BSS, 11293 .doit = nl80211_set_bss, 11294 .policy = nl80211_policy, 11295 .flags = GENL_UNS_ADMIN_PERM, 11296 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11297 NL80211_FLAG_NEED_RTNL, 11298 }, 11299 { 11300 .cmd = NL80211_CMD_GET_REG, 11301 .doit = nl80211_get_reg_do, 11302 .dumpit = nl80211_get_reg_dump, 11303 .policy = nl80211_policy, 11304 .internal_flags = NL80211_FLAG_NEED_RTNL, 11305 /* can be retrieved by unprivileged users */ 11306 }, 11307 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 11308 { 11309 .cmd = NL80211_CMD_SET_REG, 11310 .doit = nl80211_set_reg, 11311 .policy = nl80211_policy, 11312 .flags = GENL_ADMIN_PERM, 11313 .internal_flags = NL80211_FLAG_NEED_RTNL, 11314 }, 11315 #endif 11316 { 11317 .cmd = NL80211_CMD_REQ_SET_REG, 11318 .doit = nl80211_req_set_reg, 11319 .policy = nl80211_policy, 11320 .flags = GENL_ADMIN_PERM, 11321 }, 11322 { 11323 .cmd = NL80211_CMD_GET_MESH_CONFIG, 11324 .doit = nl80211_get_mesh_config, 11325 .policy = nl80211_policy, 11326 /* can be retrieved by unprivileged users */ 11327 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11328 NL80211_FLAG_NEED_RTNL, 11329 }, 11330 { 11331 .cmd = NL80211_CMD_SET_MESH_CONFIG, 11332 .doit = nl80211_update_mesh_config, 11333 .policy = nl80211_policy, 11334 .flags = GENL_UNS_ADMIN_PERM, 11335 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11336 NL80211_FLAG_NEED_RTNL, 11337 }, 11338 { 11339 .cmd = NL80211_CMD_TRIGGER_SCAN, 11340 .doit = nl80211_trigger_scan, 11341 .policy = nl80211_policy, 11342 .flags = GENL_UNS_ADMIN_PERM, 11343 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11344 NL80211_FLAG_NEED_RTNL, 11345 }, 11346 { 11347 .cmd = NL80211_CMD_ABORT_SCAN, 11348 .doit = nl80211_abort_scan, 11349 .policy = nl80211_policy, 11350 .flags = GENL_UNS_ADMIN_PERM, 11351 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11352 NL80211_FLAG_NEED_RTNL, 11353 }, 11354 { 11355 .cmd = NL80211_CMD_GET_SCAN, 11356 .policy = nl80211_policy, 11357 .dumpit = nl80211_dump_scan, 11358 }, 11359 { 11360 .cmd = NL80211_CMD_START_SCHED_SCAN, 11361 .doit = nl80211_start_sched_scan, 11362 .policy = nl80211_policy, 11363 .flags = GENL_UNS_ADMIN_PERM, 11364 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11365 NL80211_FLAG_NEED_RTNL, 11366 }, 11367 { 11368 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 11369 .doit = nl80211_stop_sched_scan, 11370 .policy = nl80211_policy, 11371 .flags = GENL_UNS_ADMIN_PERM, 11372 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11373 NL80211_FLAG_NEED_RTNL, 11374 }, 11375 { 11376 .cmd = NL80211_CMD_AUTHENTICATE, 11377 .doit = nl80211_authenticate, 11378 .policy = nl80211_policy, 11379 .flags = GENL_UNS_ADMIN_PERM, 11380 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11381 NL80211_FLAG_NEED_RTNL | 11382 NL80211_FLAG_CLEAR_SKB, 11383 }, 11384 { 11385 .cmd = NL80211_CMD_ASSOCIATE, 11386 .doit = nl80211_associate, 11387 .policy = nl80211_policy, 11388 .flags = GENL_UNS_ADMIN_PERM, 11389 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11390 NL80211_FLAG_NEED_RTNL, 11391 }, 11392 { 11393 .cmd = NL80211_CMD_DEAUTHENTICATE, 11394 .doit = nl80211_deauthenticate, 11395 .policy = nl80211_policy, 11396 .flags = GENL_UNS_ADMIN_PERM, 11397 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11398 NL80211_FLAG_NEED_RTNL, 11399 }, 11400 { 11401 .cmd = NL80211_CMD_DISASSOCIATE, 11402 .doit = nl80211_disassociate, 11403 .policy = nl80211_policy, 11404 .flags = GENL_UNS_ADMIN_PERM, 11405 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11406 NL80211_FLAG_NEED_RTNL, 11407 }, 11408 { 11409 .cmd = NL80211_CMD_JOIN_IBSS, 11410 .doit = nl80211_join_ibss, 11411 .policy = nl80211_policy, 11412 .flags = GENL_UNS_ADMIN_PERM, 11413 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11414 NL80211_FLAG_NEED_RTNL, 11415 }, 11416 { 11417 .cmd = NL80211_CMD_LEAVE_IBSS, 11418 .doit = nl80211_leave_ibss, 11419 .policy = nl80211_policy, 11420 .flags = GENL_UNS_ADMIN_PERM, 11421 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11422 NL80211_FLAG_NEED_RTNL, 11423 }, 11424 #ifdef CONFIG_NL80211_TESTMODE 11425 { 11426 .cmd = NL80211_CMD_TESTMODE, 11427 .doit = nl80211_testmode_do, 11428 .dumpit = nl80211_testmode_dump, 11429 .policy = nl80211_policy, 11430 .flags = GENL_UNS_ADMIN_PERM, 11431 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11432 NL80211_FLAG_NEED_RTNL, 11433 }, 11434 #endif 11435 { 11436 .cmd = NL80211_CMD_CONNECT, 11437 .doit = nl80211_connect, 11438 .policy = nl80211_policy, 11439 .flags = GENL_UNS_ADMIN_PERM, 11440 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11441 NL80211_FLAG_NEED_RTNL, 11442 }, 11443 { 11444 .cmd = NL80211_CMD_DISCONNECT, 11445 .doit = nl80211_disconnect, 11446 .policy = nl80211_policy, 11447 .flags = GENL_UNS_ADMIN_PERM, 11448 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11449 NL80211_FLAG_NEED_RTNL, 11450 }, 11451 { 11452 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 11453 .doit = nl80211_wiphy_netns, 11454 .policy = nl80211_policy, 11455 .flags = GENL_UNS_ADMIN_PERM, 11456 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11457 NL80211_FLAG_NEED_RTNL, 11458 }, 11459 { 11460 .cmd = NL80211_CMD_GET_SURVEY, 11461 .policy = nl80211_policy, 11462 .dumpit = nl80211_dump_survey, 11463 }, 11464 { 11465 .cmd = NL80211_CMD_SET_PMKSA, 11466 .doit = nl80211_setdel_pmksa, 11467 .policy = nl80211_policy, 11468 .flags = GENL_UNS_ADMIN_PERM, 11469 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11470 NL80211_FLAG_NEED_RTNL, 11471 }, 11472 { 11473 .cmd = NL80211_CMD_DEL_PMKSA, 11474 .doit = nl80211_setdel_pmksa, 11475 .policy = nl80211_policy, 11476 .flags = GENL_UNS_ADMIN_PERM, 11477 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11478 NL80211_FLAG_NEED_RTNL, 11479 }, 11480 { 11481 .cmd = NL80211_CMD_FLUSH_PMKSA, 11482 .doit = nl80211_flush_pmksa, 11483 .policy = nl80211_policy, 11484 .flags = GENL_UNS_ADMIN_PERM, 11485 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11486 NL80211_FLAG_NEED_RTNL, 11487 }, 11488 { 11489 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 11490 .doit = nl80211_remain_on_channel, 11491 .policy = nl80211_policy, 11492 .flags = GENL_UNS_ADMIN_PERM, 11493 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11494 NL80211_FLAG_NEED_RTNL, 11495 }, 11496 { 11497 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11498 .doit = nl80211_cancel_remain_on_channel, 11499 .policy = nl80211_policy, 11500 .flags = GENL_UNS_ADMIN_PERM, 11501 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11502 NL80211_FLAG_NEED_RTNL, 11503 }, 11504 { 11505 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 11506 .doit = nl80211_set_tx_bitrate_mask, 11507 .policy = nl80211_policy, 11508 .flags = GENL_UNS_ADMIN_PERM, 11509 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11510 NL80211_FLAG_NEED_RTNL, 11511 }, 11512 { 11513 .cmd = NL80211_CMD_REGISTER_FRAME, 11514 .doit = nl80211_register_mgmt, 11515 .policy = nl80211_policy, 11516 .flags = GENL_UNS_ADMIN_PERM, 11517 .internal_flags = NL80211_FLAG_NEED_WDEV | 11518 NL80211_FLAG_NEED_RTNL, 11519 }, 11520 { 11521 .cmd = NL80211_CMD_FRAME, 11522 .doit = nl80211_tx_mgmt, 11523 .policy = nl80211_policy, 11524 .flags = GENL_UNS_ADMIN_PERM, 11525 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11526 NL80211_FLAG_NEED_RTNL, 11527 }, 11528 { 11529 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 11530 .doit = nl80211_tx_mgmt_cancel_wait, 11531 .policy = nl80211_policy, 11532 .flags = GENL_UNS_ADMIN_PERM, 11533 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11534 NL80211_FLAG_NEED_RTNL, 11535 }, 11536 { 11537 .cmd = NL80211_CMD_SET_POWER_SAVE, 11538 .doit = nl80211_set_power_save, 11539 .policy = nl80211_policy, 11540 .flags = GENL_UNS_ADMIN_PERM, 11541 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11542 NL80211_FLAG_NEED_RTNL, 11543 }, 11544 { 11545 .cmd = NL80211_CMD_GET_POWER_SAVE, 11546 .doit = nl80211_get_power_save, 11547 .policy = nl80211_policy, 11548 /* can be retrieved by unprivileged users */ 11549 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11550 NL80211_FLAG_NEED_RTNL, 11551 }, 11552 { 11553 .cmd = NL80211_CMD_SET_CQM, 11554 .doit = nl80211_set_cqm, 11555 .policy = nl80211_policy, 11556 .flags = GENL_UNS_ADMIN_PERM, 11557 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11558 NL80211_FLAG_NEED_RTNL, 11559 }, 11560 { 11561 .cmd = NL80211_CMD_SET_CHANNEL, 11562 .doit = nl80211_set_channel, 11563 .policy = nl80211_policy, 11564 .flags = GENL_UNS_ADMIN_PERM, 11565 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11566 NL80211_FLAG_NEED_RTNL, 11567 }, 11568 { 11569 .cmd = NL80211_CMD_SET_WDS_PEER, 11570 .doit = nl80211_set_wds_peer, 11571 .policy = nl80211_policy, 11572 .flags = GENL_UNS_ADMIN_PERM, 11573 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11574 NL80211_FLAG_NEED_RTNL, 11575 }, 11576 { 11577 .cmd = NL80211_CMD_JOIN_MESH, 11578 .doit = nl80211_join_mesh, 11579 .policy = nl80211_policy, 11580 .flags = GENL_UNS_ADMIN_PERM, 11581 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11582 NL80211_FLAG_NEED_RTNL, 11583 }, 11584 { 11585 .cmd = NL80211_CMD_LEAVE_MESH, 11586 .doit = nl80211_leave_mesh, 11587 .policy = nl80211_policy, 11588 .flags = GENL_UNS_ADMIN_PERM, 11589 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11590 NL80211_FLAG_NEED_RTNL, 11591 }, 11592 { 11593 .cmd = NL80211_CMD_JOIN_OCB, 11594 .doit = nl80211_join_ocb, 11595 .policy = nl80211_policy, 11596 .flags = GENL_UNS_ADMIN_PERM, 11597 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11598 NL80211_FLAG_NEED_RTNL, 11599 }, 11600 { 11601 .cmd = NL80211_CMD_LEAVE_OCB, 11602 .doit = nl80211_leave_ocb, 11603 .policy = nl80211_policy, 11604 .flags = GENL_UNS_ADMIN_PERM, 11605 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11606 NL80211_FLAG_NEED_RTNL, 11607 }, 11608 #ifdef CONFIG_PM 11609 { 11610 .cmd = NL80211_CMD_GET_WOWLAN, 11611 .doit = nl80211_get_wowlan, 11612 .policy = nl80211_policy, 11613 /* can be retrieved by unprivileged users */ 11614 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11615 NL80211_FLAG_NEED_RTNL, 11616 }, 11617 { 11618 .cmd = NL80211_CMD_SET_WOWLAN, 11619 .doit = nl80211_set_wowlan, 11620 .policy = nl80211_policy, 11621 .flags = GENL_UNS_ADMIN_PERM, 11622 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11623 NL80211_FLAG_NEED_RTNL, 11624 }, 11625 #endif 11626 { 11627 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 11628 .doit = nl80211_set_rekey_data, 11629 .policy = nl80211_policy, 11630 .flags = GENL_UNS_ADMIN_PERM, 11631 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11632 NL80211_FLAG_NEED_RTNL | 11633 NL80211_FLAG_CLEAR_SKB, 11634 }, 11635 { 11636 .cmd = NL80211_CMD_TDLS_MGMT, 11637 .doit = nl80211_tdls_mgmt, 11638 .policy = nl80211_policy, 11639 .flags = GENL_UNS_ADMIN_PERM, 11640 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11641 NL80211_FLAG_NEED_RTNL, 11642 }, 11643 { 11644 .cmd = NL80211_CMD_TDLS_OPER, 11645 .doit = nl80211_tdls_oper, 11646 .policy = nl80211_policy, 11647 .flags = GENL_UNS_ADMIN_PERM, 11648 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11649 NL80211_FLAG_NEED_RTNL, 11650 }, 11651 { 11652 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 11653 .doit = nl80211_register_unexpected_frame, 11654 .policy = nl80211_policy, 11655 .flags = GENL_UNS_ADMIN_PERM, 11656 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11657 NL80211_FLAG_NEED_RTNL, 11658 }, 11659 { 11660 .cmd = NL80211_CMD_PROBE_CLIENT, 11661 .doit = nl80211_probe_client, 11662 .policy = nl80211_policy, 11663 .flags = GENL_UNS_ADMIN_PERM, 11664 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11665 NL80211_FLAG_NEED_RTNL, 11666 }, 11667 { 11668 .cmd = NL80211_CMD_REGISTER_BEACONS, 11669 .doit = nl80211_register_beacons, 11670 .policy = nl80211_policy, 11671 .flags = GENL_UNS_ADMIN_PERM, 11672 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11673 NL80211_FLAG_NEED_RTNL, 11674 }, 11675 { 11676 .cmd = NL80211_CMD_SET_NOACK_MAP, 11677 .doit = nl80211_set_noack_map, 11678 .policy = nl80211_policy, 11679 .flags = GENL_UNS_ADMIN_PERM, 11680 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11681 NL80211_FLAG_NEED_RTNL, 11682 }, 11683 { 11684 .cmd = NL80211_CMD_START_P2P_DEVICE, 11685 .doit = nl80211_start_p2p_device, 11686 .policy = nl80211_policy, 11687 .flags = GENL_UNS_ADMIN_PERM, 11688 .internal_flags = NL80211_FLAG_NEED_WDEV | 11689 NL80211_FLAG_NEED_RTNL, 11690 }, 11691 { 11692 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 11693 .doit = nl80211_stop_p2p_device, 11694 .policy = nl80211_policy, 11695 .flags = GENL_UNS_ADMIN_PERM, 11696 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11697 NL80211_FLAG_NEED_RTNL, 11698 }, 11699 { 11700 .cmd = NL80211_CMD_SET_MCAST_RATE, 11701 .doit = nl80211_set_mcast_rate, 11702 .policy = nl80211_policy, 11703 .flags = GENL_UNS_ADMIN_PERM, 11704 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11705 NL80211_FLAG_NEED_RTNL, 11706 }, 11707 { 11708 .cmd = NL80211_CMD_SET_MAC_ACL, 11709 .doit = nl80211_set_mac_acl, 11710 .policy = nl80211_policy, 11711 .flags = GENL_UNS_ADMIN_PERM, 11712 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11713 NL80211_FLAG_NEED_RTNL, 11714 }, 11715 { 11716 .cmd = NL80211_CMD_RADAR_DETECT, 11717 .doit = nl80211_start_radar_detection, 11718 .policy = nl80211_policy, 11719 .flags = GENL_UNS_ADMIN_PERM, 11720 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11721 NL80211_FLAG_NEED_RTNL, 11722 }, 11723 { 11724 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 11725 .doit = nl80211_get_protocol_features, 11726 .policy = nl80211_policy, 11727 }, 11728 { 11729 .cmd = NL80211_CMD_UPDATE_FT_IES, 11730 .doit = nl80211_update_ft_ies, 11731 .policy = nl80211_policy, 11732 .flags = GENL_UNS_ADMIN_PERM, 11733 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11734 NL80211_FLAG_NEED_RTNL, 11735 }, 11736 { 11737 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 11738 .doit = nl80211_crit_protocol_start, 11739 .policy = nl80211_policy, 11740 .flags = GENL_UNS_ADMIN_PERM, 11741 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11742 NL80211_FLAG_NEED_RTNL, 11743 }, 11744 { 11745 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 11746 .doit = nl80211_crit_protocol_stop, 11747 .policy = nl80211_policy, 11748 .flags = GENL_UNS_ADMIN_PERM, 11749 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11750 NL80211_FLAG_NEED_RTNL, 11751 }, 11752 { 11753 .cmd = NL80211_CMD_GET_COALESCE, 11754 .doit = nl80211_get_coalesce, 11755 .policy = nl80211_policy, 11756 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11757 NL80211_FLAG_NEED_RTNL, 11758 }, 11759 { 11760 .cmd = NL80211_CMD_SET_COALESCE, 11761 .doit = nl80211_set_coalesce, 11762 .policy = nl80211_policy, 11763 .flags = GENL_UNS_ADMIN_PERM, 11764 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11765 NL80211_FLAG_NEED_RTNL, 11766 }, 11767 { 11768 .cmd = NL80211_CMD_CHANNEL_SWITCH, 11769 .doit = nl80211_channel_switch, 11770 .policy = nl80211_policy, 11771 .flags = GENL_UNS_ADMIN_PERM, 11772 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11773 NL80211_FLAG_NEED_RTNL, 11774 }, 11775 { 11776 .cmd = NL80211_CMD_VENDOR, 11777 .doit = nl80211_vendor_cmd, 11778 .dumpit = nl80211_vendor_cmd_dump, 11779 .policy = nl80211_policy, 11780 .flags = GENL_UNS_ADMIN_PERM, 11781 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11782 NL80211_FLAG_NEED_RTNL, 11783 }, 11784 { 11785 .cmd = NL80211_CMD_SET_QOS_MAP, 11786 .doit = nl80211_set_qos_map, 11787 .policy = nl80211_policy, 11788 .flags = GENL_UNS_ADMIN_PERM, 11789 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11790 NL80211_FLAG_NEED_RTNL, 11791 }, 11792 { 11793 .cmd = NL80211_CMD_ADD_TX_TS, 11794 .doit = nl80211_add_tx_ts, 11795 .policy = nl80211_policy, 11796 .flags = GENL_UNS_ADMIN_PERM, 11797 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11798 NL80211_FLAG_NEED_RTNL, 11799 }, 11800 { 11801 .cmd = NL80211_CMD_DEL_TX_TS, 11802 .doit = nl80211_del_tx_ts, 11803 .policy = nl80211_policy, 11804 .flags = GENL_UNS_ADMIN_PERM, 11805 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11806 NL80211_FLAG_NEED_RTNL, 11807 }, 11808 { 11809 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 11810 .doit = nl80211_tdls_channel_switch, 11811 .policy = nl80211_policy, 11812 .flags = GENL_UNS_ADMIN_PERM, 11813 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11814 NL80211_FLAG_NEED_RTNL, 11815 }, 11816 { 11817 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 11818 .doit = nl80211_tdls_cancel_channel_switch, 11819 .policy = nl80211_policy, 11820 .flags = GENL_UNS_ADMIN_PERM, 11821 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11822 NL80211_FLAG_NEED_RTNL, 11823 }, 11824 }; 11825 11826 /* notification functions */ 11827 11828 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 11829 enum nl80211_commands cmd) 11830 { 11831 struct sk_buff *msg; 11832 struct nl80211_dump_wiphy_state state = {}; 11833 11834 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 11835 cmd != NL80211_CMD_DEL_WIPHY); 11836 11837 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11838 if (!msg) 11839 return; 11840 11841 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 11842 nlmsg_free(msg); 11843 return; 11844 } 11845 11846 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11847 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11848 } 11849 11850 static int nl80211_add_scan_req(struct sk_buff *msg, 11851 struct cfg80211_registered_device *rdev) 11852 { 11853 struct cfg80211_scan_request *req = rdev->scan_req; 11854 struct nlattr *nest; 11855 int i; 11856 11857 if (WARN_ON(!req)) 11858 return 0; 11859 11860 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11861 if (!nest) 11862 goto nla_put_failure; 11863 for (i = 0; i < req->n_ssids; i++) { 11864 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11865 goto nla_put_failure; 11866 } 11867 nla_nest_end(msg, nest); 11868 11869 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11870 if (!nest) 11871 goto nla_put_failure; 11872 for (i = 0; i < req->n_channels; i++) { 11873 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11874 goto nla_put_failure; 11875 } 11876 nla_nest_end(msg, nest); 11877 11878 if (req->ie && 11879 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11880 goto nla_put_failure; 11881 11882 if (req->flags && 11883 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11884 goto nla_put_failure; 11885 11886 if (req->info.scan_start_tsf && 11887 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 11888 req->info.scan_start_tsf, NL80211_BSS_PAD) || 11889 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 11890 req->info.tsf_bssid))) 11891 goto nla_put_failure; 11892 11893 return 0; 11894 nla_put_failure: 11895 return -ENOBUFS; 11896 } 11897 11898 static int nl80211_send_scan_msg(struct sk_buff *msg, 11899 struct cfg80211_registered_device *rdev, 11900 struct wireless_dev *wdev, 11901 u32 portid, u32 seq, int flags, 11902 u32 cmd) 11903 { 11904 void *hdr; 11905 11906 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11907 if (!hdr) 11908 return -1; 11909 11910 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11911 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11912 wdev->netdev->ifindex)) || 11913 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11914 NL80211_ATTR_PAD)) 11915 goto nla_put_failure; 11916 11917 /* ignore errors and send incomplete event anyway */ 11918 nl80211_add_scan_req(msg, rdev); 11919 11920 genlmsg_end(msg, hdr); 11921 return 0; 11922 11923 nla_put_failure: 11924 genlmsg_cancel(msg, hdr); 11925 return -EMSGSIZE; 11926 } 11927 11928 static int 11929 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11930 struct cfg80211_registered_device *rdev, 11931 struct net_device *netdev, 11932 u32 portid, u32 seq, int flags, u32 cmd) 11933 { 11934 void *hdr; 11935 11936 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11937 if (!hdr) 11938 return -1; 11939 11940 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11941 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11942 goto nla_put_failure; 11943 11944 genlmsg_end(msg, hdr); 11945 return 0; 11946 11947 nla_put_failure: 11948 genlmsg_cancel(msg, hdr); 11949 return -EMSGSIZE; 11950 } 11951 11952 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11953 struct wireless_dev *wdev) 11954 { 11955 struct sk_buff *msg; 11956 11957 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11958 if (!msg) 11959 return; 11960 11961 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11962 NL80211_CMD_TRIGGER_SCAN) < 0) { 11963 nlmsg_free(msg); 11964 return; 11965 } 11966 11967 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11968 NL80211_MCGRP_SCAN, GFP_KERNEL); 11969 } 11970 11971 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11972 struct wireless_dev *wdev, bool aborted) 11973 { 11974 struct sk_buff *msg; 11975 11976 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11977 if (!msg) 11978 return NULL; 11979 11980 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11981 aborted ? NL80211_CMD_SCAN_ABORTED : 11982 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11983 nlmsg_free(msg); 11984 return NULL; 11985 } 11986 11987 return msg; 11988 } 11989 11990 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11991 struct sk_buff *msg) 11992 { 11993 if (!msg) 11994 return; 11995 11996 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11997 NL80211_MCGRP_SCAN, GFP_KERNEL); 11998 } 11999 12000 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 12001 struct net_device *netdev) 12002 { 12003 struct sk_buff *msg; 12004 12005 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12006 if (!msg) 12007 return; 12008 12009 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 12010 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 12011 nlmsg_free(msg); 12012 return; 12013 } 12014 12015 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12016 NL80211_MCGRP_SCAN, GFP_KERNEL); 12017 } 12018 12019 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 12020 struct net_device *netdev, u32 cmd) 12021 { 12022 struct sk_buff *msg; 12023 12024 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12025 if (!msg) 12026 return; 12027 12028 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 12029 nlmsg_free(msg); 12030 return; 12031 } 12032 12033 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12034 NL80211_MCGRP_SCAN, GFP_KERNEL); 12035 } 12036 12037 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 12038 struct regulatory_request *request) 12039 { 12040 /* Userspace can always count this one always being set */ 12041 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 12042 goto nla_put_failure; 12043 12044 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 12045 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12046 NL80211_REGDOM_TYPE_WORLD)) 12047 goto nla_put_failure; 12048 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 12049 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12050 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 12051 goto nla_put_failure; 12052 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 12053 request->intersect) { 12054 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12055 NL80211_REGDOM_TYPE_INTERSECTION)) 12056 goto nla_put_failure; 12057 } else { 12058 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12059 NL80211_REGDOM_TYPE_COUNTRY) || 12060 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 12061 request->alpha2)) 12062 goto nla_put_failure; 12063 } 12064 12065 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 12066 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 12067 12068 if (wiphy && 12069 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 12070 goto nla_put_failure; 12071 12072 if (wiphy && 12073 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 12074 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 12075 goto nla_put_failure; 12076 } 12077 12078 return true; 12079 12080 nla_put_failure: 12081 return false; 12082 } 12083 12084 /* 12085 * This can happen on global regulatory changes or device specific settings 12086 * based on custom regulatory domains. 12087 */ 12088 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 12089 struct regulatory_request *request) 12090 { 12091 struct sk_buff *msg; 12092 void *hdr; 12093 12094 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12095 if (!msg) 12096 return; 12097 12098 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 12099 if (!hdr) { 12100 nlmsg_free(msg); 12101 return; 12102 } 12103 12104 if (nl80211_reg_change_event_fill(msg, request) == false) 12105 goto nla_put_failure; 12106 12107 genlmsg_end(msg, hdr); 12108 12109 rcu_read_lock(); 12110 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 12111 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 12112 rcu_read_unlock(); 12113 12114 return; 12115 12116 nla_put_failure: 12117 genlmsg_cancel(msg, hdr); 12118 nlmsg_free(msg); 12119 } 12120 12121 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 12122 struct net_device *netdev, 12123 const u8 *buf, size_t len, 12124 enum nl80211_commands cmd, gfp_t gfp, 12125 int uapsd_queues) 12126 { 12127 struct sk_buff *msg; 12128 void *hdr; 12129 12130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12131 if (!msg) 12132 return; 12133 12134 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12135 if (!hdr) { 12136 nlmsg_free(msg); 12137 return; 12138 } 12139 12140 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12141 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12142 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 12143 goto nla_put_failure; 12144 12145 if (uapsd_queues >= 0) { 12146 struct nlattr *nla_wmm = 12147 nla_nest_start(msg, NL80211_ATTR_STA_WME); 12148 if (!nla_wmm) 12149 goto nla_put_failure; 12150 12151 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 12152 uapsd_queues)) 12153 goto nla_put_failure; 12154 12155 nla_nest_end(msg, nla_wmm); 12156 } 12157 12158 genlmsg_end(msg, hdr); 12159 12160 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12161 NL80211_MCGRP_MLME, gfp); 12162 return; 12163 12164 nla_put_failure: 12165 genlmsg_cancel(msg, hdr); 12166 nlmsg_free(msg); 12167 } 12168 12169 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 12170 struct net_device *netdev, const u8 *buf, 12171 size_t len, gfp_t gfp) 12172 { 12173 nl80211_send_mlme_event(rdev, netdev, buf, len, 12174 NL80211_CMD_AUTHENTICATE, gfp, -1); 12175 } 12176 12177 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 12178 struct net_device *netdev, const u8 *buf, 12179 size_t len, gfp_t gfp, int uapsd_queues) 12180 { 12181 nl80211_send_mlme_event(rdev, netdev, buf, len, 12182 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 12183 } 12184 12185 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 12186 struct net_device *netdev, const u8 *buf, 12187 size_t len, gfp_t gfp) 12188 { 12189 nl80211_send_mlme_event(rdev, netdev, buf, len, 12190 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 12191 } 12192 12193 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 12194 struct net_device *netdev, const u8 *buf, 12195 size_t len, gfp_t gfp) 12196 { 12197 nl80211_send_mlme_event(rdev, netdev, buf, len, 12198 NL80211_CMD_DISASSOCIATE, gfp, -1); 12199 } 12200 12201 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 12202 size_t len) 12203 { 12204 struct wireless_dev *wdev = dev->ieee80211_ptr; 12205 struct wiphy *wiphy = wdev->wiphy; 12206 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12207 const struct ieee80211_mgmt *mgmt = (void *)buf; 12208 u32 cmd; 12209 12210 if (WARN_ON(len < 2)) 12211 return; 12212 12213 if (ieee80211_is_deauth(mgmt->frame_control)) 12214 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 12215 else 12216 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 12217 12218 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 12219 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 12220 } 12221 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 12222 12223 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 12224 struct net_device *netdev, int cmd, 12225 const u8 *addr, gfp_t gfp) 12226 { 12227 struct sk_buff *msg; 12228 void *hdr; 12229 12230 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12231 if (!msg) 12232 return; 12233 12234 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12235 if (!hdr) { 12236 nlmsg_free(msg); 12237 return; 12238 } 12239 12240 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12241 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12242 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 12243 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 12244 goto nla_put_failure; 12245 12246 genlmsg_end(msg, hdr); 12247 12248 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12249 NL80211_MCGRP_MLME, gfp); 12250 return; 12251 12252 nla_put_failure: 12253 genlmsg_cancel(msg, hdr); 12254 nlmsg_free(msg); 12255 } 12256 12257 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 12258 struct net_device *netdev, const u8 *addr, 12259 gfp_t gfp) 12260 { 12261 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 12262 addr, gfp); 12263 } 12264 12265 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 12266 struct net_device *netdev, const u8 *addr, 12267 gfp_t gfp) 12268 { 12269 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 12270 addr, gfp); 12271 } 12272 12273 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 12274 struct net_device *netdev, const u8 *bssid, 12275 const u8 *req_ie, size_t req_ie_len, 12276 const u8 *resp_ie, size_t resp_ie_len, 12277 int status, gfp_t gfp) 12278 { 12279 struct sk_buff *msg; 12280 void *hdr; 12281 12282 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12283 if (!msg) 12284 return; 12285 12286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 12287 if (!hdr) { 12288 nlmsg_free(msg); 12289 return; 12290 } 12291 12292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12294 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 12295 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 12296 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 12297 status) || 12298 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) || 12299 (req_ie && 12300 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 12301 (resp_ie && 12302 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 12303 goto nla_put_failure; 12304 12305 genlmsg_end(msg, hdr); 12306 12307 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12308 NL80211_MCGRP_MLME, gfp); 12309 return; 12310 12311 nla_put_failure: 12312 genlmsg_cancel(msg, hdr); 12313 nlmsg_free(msg); 12314 } 12315 12316 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 12317 struct net_device *netdev, const u8 *bssid, 12318 const u8 *req_ie, size_t req_ie_len, 12319 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 12320 { 12321 struct sk_buff *msg; 12322 void *hdr; 12323 12324 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12325 if (!msg) 12326 return; 12327 12328 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 12329 if (!hdr) { 12330 nlmsg_free(msg); 12331 return; 12332 } 12333 12334 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12335 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12336 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 12337 (req_ie && 12338 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 12339 (resp_ie && 12340 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 12341 goto nla_put_failure; 12342 12343 genlmsg_end(msg, hdr); 12344 12345 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12346 NL80211_MCGRP_MLME, gfp); 12347 return; 12348 12349 nla_put_failure: 12350 genlmsg_cancel(msg, hdr); 12351 nlmsg_free(msg); 12352 } 12353 12354 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 12355 struct net_device *netdev, u16 reason, 12356 const u8 *ie, size_t ie_len, bool from_ap) 12357 { 12358 struct sk_buff *msg; 12359 void *hdr; 12360 12361 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12362 if (!msg) 12363 return; 12364 12365 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 12366 if (!hdr) { 12367 nlmsg_free(msg); 12368 return; 12369 } 12370 12371 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12372 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12373 (from_ap && reason && 12374 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 12375 (from_ap && 12376 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 12377 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 12378 goto nla_put_failure; 12379 12380 genlmsg_end(msg, hdr); 12381 12382 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12383 NL80211_MCGRP_MLME, GFP_KERNEL); 12384 return; 12385 12386 nla_put_failure: 12387 genlmsg_cancel(msg, hdr); 12388 nlmsg_free(msg); 12389 } 12390 12391 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 12392 struct net_device *netdev, const u8 *bssid, 12393 gfp_t gfp) 12394 { 12395 struct sk_buff *msg; 12396 void *hdr; 12397 12398 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12399 if (!msg) 12400 return; 12401 12402 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 12403 if (!hdr) { 12404 nlmsg_free(msg); 12405 return; 12406 } 12407 12408 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12409 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12410 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12411 goto nla_put_failure; 12412 12413 genlmsg_end(msg, hdr); 12414 12415 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12416 NL80211_MCGRP_MLME, gfp); 12417 return; 12418 12419 nla_put_failure: 12420 genlmsg_cancel(msg, hdr); 12421 nlmsg_free(msg); 12422 } 12423 12424 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 12425 const u8* ie, u8 ie_len, gfp_t gfp) 12426 { 12427 struct wireless_dev *wdev = dev->ieee80211_ptr; 12428 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12429 struct sk_buff *msg; 12430 void *hdr; 12431 12432 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 12433 return; 12434 12435 trace_cfg80211_notify_new_peer_candidate(dev, addr); 12436 12437 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12438 if (!msg) 12439 return; 12440 12441 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 12442 if (!hdr) { 12443 nlmsg_free(msg); 12444 return; 12445 } 12446 12447 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12448 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12449 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12450 (ie_len && ie && 12451 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 12452 goto nla_put_failure; 12453 12454 genlmsg_end(msg, hdr); 12455 12456 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12457 NL80211_MCGRP_MLME, gfp); 12458 return; 12459 12460 nla_put_failure: 12461 genlmsg_cancel(msg, hdr); 12462 nlmsg_free(msg); 12463 } 12464 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 12465 12466 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 12467 struct net_device *netdev, const u8 *addr, 12468 enum nl80211_key_type key_type, int key_id, 12469 const u8 *tsc, gfp_t gfp) 12470 { 12471 struct sk_buff *msg; 12472 void *hdr; 12473 12474 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12475 if (!msg) 12476 return; 12477 12478 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 12479 if (!hdr) { 12480 nlmsg_free(msg); 12481 return; 12482 } 12483 12484 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12485 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12486 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 12487 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 12488 (key_id != -1 && 12489 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 12490 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 12491 goto nla_put_failure; 12492 12493 genlmsg_end(msg, hdr); 12494 12495 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12496 NL80211_MCGRP_MLME, gfp); 12497 return; 12498 12499 nla_put_failure: 12500 genlmsg_cancel(msg, hdr); 12501 nlmsg_free(msg); 12502 } 12503 12504 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 12505 struct ieee80211_channel *channel_before, 12506 struct ieee80211_channel *channel_after) 12507 { 12508 struct sk_buff *msg; 12509 void *hdr; 12510 struct nlattr *nl_freq; 12511 12512 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 12513 if (!msg) 12514 return; 12515 12516 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 12517 if (!hdr) { 12518 nlmsg_free(msg); 12519 return; 12520 } 12521 12522 /* 12523 * Since we are applying the beacon hint to a wiphy we know its 12524 * wiphy_idx is valid 12525 */ 12526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 12527 goto nla_put_failure; 12528 12529 /* Before */ 12530 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 12531 if (!nl_freq) 12532 goto nla_put_failure; 12533 if (nl80211_msg_put_channel(msg, channel_before, false)) 12534 goto nla_put_failure; 12535 nla_nest_end(msg, nl_freq); 12536 12537 /* After */ 12538 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 12539 if (!nl_freq) 12540 goto nla_put_failure; 12541 if (nl80211_msg_put_channel(msg, channel_after, false)) 12542 goto nla_put_failure; 12543 nla_nest_end(msg, nl_freq); 12544 12545 genlmsg_end(msg, hdr); 12546 12547 rcu_read_lock(); 12548 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 12549 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 12550 rcu_read_unlock(); 12551 12552 return; 12553 12554 nla_put_failure: 12555 genlmsg_cancel(msg, hdr); 12556 nlmsg_free(msg); 12557 } 12558 12559 static void nl80211_send_remain_on_chan_event( 12560 int cmd, struct cfg80211_registered_device *rdev, 12561 struct wireless_dev *wdev, u64 cookie, 12562 struct ieee80211_channel *chan, 12563 unsigned int duration, gfp_t gfp) 12564 { 12565 struct sk_buff *msg; 12566 void *hdr; 12567 12568 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12569 if (!msg) 12570 return; 12571 12572 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12573 if (!hdr) { 12574 nlmsg_free(msg); 12575 return; 12576 } 12577 12578 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12579 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12580 wdev->netdev->ifindex)) || 12581 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12582 NL80211_ATTR_PAD) || 12583 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 12584 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 12585 NL80211_CHAN_NO_HT) || 12586 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12587 NL80211_ATTR_PAD)) 12588 goto nla_put_failure; 12589 12590 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 12591 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 12592 goto nla_put_failure; 12593 12594 genlmsg_end(msg, hdr); 12595 12596 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12597 NL80211_MCGRP_MLME, gfp); 12598 return; 12599 12600 nla_put_failure: 12601 genlmsg_cancel(msg, hdr); 12602 nlmsg_free(msg); 12603 } 12604 12605 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 12606 struct ieee80211_channel *chan, 12607 unsigned int duration, gfp_t gfp) 12608 { 12609 struct wiphy *wiphy = wdev->wiphy; 12610 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12611 12612 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 12613 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 12614 rdev, wdev, cookie, chan, 12615 duration, gfp); 12616 } 12617 EXPORT_SYMBOL(cfg80211_ready_on_channel); 12618 12619 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 12620 struct ieee80211_channel *chan, 12621 gfp_t gfp) 12622 { 12623 struct wiphy *wiphy = wdev->wiphy; 12624 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12625 12626 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 12627 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 12628 rdev, wdev, cookie, chan, 0, gfp); 12629 } 12630 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 12631 12632 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 12633 struct station_info *sinfo, gfp_t gfp) 12634 { 12635 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12636 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12637 struct sk_buff *msg; 12638 12639 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 12640 12641 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12642 if (!msg) 12643 return; 12644 12645 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 12646 rdev, dev, mac_addr, sinfo) < 0) { 12647 nlmsg_free(msg); 12648 return; 12649 } 12650 12651 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12652 NL80211_MCGRP_MLME, gfp); 12653 } 12654 EXPORT_SYMBOL(cfg80211_new_sta); 12655 12656 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 12657 struct station_info *sinfo, gfp_t gfp) 12658 { 12659 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12660 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12661 struct sk_buff *msg; 12662 struct station_info empty_sinfo = {}; 12663 12664 if (!sinfo) 12665 sinfo = &empty_sinfo; 12666 12667 trace_cfg80211_del_sta(dev, mac_addr); 12668 12669 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12670 if (!msg) 12671 return; 12672 12673 if (nl80211_send_station(msg, NL80211_CMD_DEL_STATION, 0, 0, 0, 12674 rdev, dev, mac_addr, sinfo) < 0) { 12675 nlmsg_free(msg); 12676 return; 12677 } 12678 12679 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12680 NL80211_MCGRP_MLME, gfp); 12681 } 12682 EXPORT_SYMBOL(cfg80211_del_sta_sinfo); 12683 12684 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 12685 enum nl80211_connect_failed_reason reason, 12686 gfp_t gfp) 12687 { 12688 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12689 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12690 struct sk_buff *msg; 12691 void *hdr; 12692 12693 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 12694 if (!msg) 12695 return; 12696 12697 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 12698 if (!hdr) { 12699 nlmsg_free(msg); 12700 return; 12701 } 12702 12703 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12704 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 12705 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 12706 goto nla_put_failure; 12707 12708 genlmsg_end(msg, hdr); 12709 12710 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12711 NL80211_MCGRP_MLME, gfp); 12712 return; 12713 12714 nla_put_failure: 12715 genlmsg_cancel(msg, hdr); 12716 nlmsg_free(msg); 12717 } 12718 EXPORT_SYMBOL(cfg80211_conn_failed); 12719 12720 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 12721 const u8 *addr, gfp_t gfp) 12722 { 12723 struct wireless_dev *wdev = dev->ieee80211_ptr; 12724 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12725 struct sk_buff *msg; 12726 void *hdr; 12727 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 12728 12729 if (!nlportid) 12730 return false; 12731 12732 msg = nlmsg_new(100, gfp); 12733 if (!msg) 12734 return true; 12735 12736 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12737 if (!hdr) { 12738 nlmsg_free(msg); 12739 return true; 12740 } 12741 12742 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12743 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12744 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 12745 goto nla_put_failure; 12746 12747 genlmsg_end(msg, hdr); 12748 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12749 return true; 12750 12751 nla_put_failure: 12752 genlmsg_cancel(msg, hdr); 12753 nlmsg_free(msg); 12754 return true; 12755 } 12756 12757 bool cfg80211_rx_spurious_frame(struct net_device *dev, 12758 const u8 *addr, gfp_t gfp) 12759 { 12760 struct wireless_dev *wdev = dev->ieee80211_ptr; 12761 bool ret; 12762 12763 trace_cfg80211_rx_spurious_frame(dev, addr); 12764 12765 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12766 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 12767 trace_cfg80211_return_bool(false); 12768 return false; 12769 } 12770 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 12771 addr, gfp); 12772 trace_cfg80211_return_bool(ret); 12773 return ret; 12774 } 12775 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 12776 12777 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 12778 const u8 *addr, gfp_t gfp) 12779 { 12780 struct wireless_dev *wdev = dev->ieee80211_ptr; 12781 bool ret; 12782 12783 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 12784 12785 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12786 wdev->iftype != NL80211_IFTYPE_P2P_GO && 12787 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 12788 trace_cfg80211_return_bool(false); 12789 return false; 12790 } 12791 ret = __nl80211_unexpected_frame(dev, 12792 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 12793 addr, gfp); 12794 trace_cfg80211_return_bool(ret); 12795 return ret; 12796 } 12797 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 12798 12799 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 12800 struct wireless_dev *wdev, u32 nlportid, 12801 int freq, int sig_dbm, 12802 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 12803 { 12804 struct net_device *netdev = wdev->netdev; 12805 struct sk_buff *msg; 12806 void *hdr; 12807 12808 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12809 if (!msg) 12810 return -ENOMEM; 12811 12812 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12813 if (!hdr) { 12814 nlmsg_free(msg); 12815 return -ENOMEM; 12816 } 12817 12818 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12819 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12820 netdev->ifindex)) || 12821 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12822 NL80211_ATTR_PAD) || 12823 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 12824 (sig_dbm && 12825 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12826 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12827 (flags && 12828 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 12829 goto nla_put_failure; 12830 12831 genlmsg_end(msg, hdr); 12832 12833 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12834 12835 nla_put_failure: 12836 genlmsg_cancel(msg, hdr); 12837 nlmsg_free(msg); 12838 return -ENOBUFS; 12839 } 12840 12841 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 12842 const u8 *buf, size_t len, bool ack, gfp_t gfp) 12843 { 12844 struct wiphy *wiphy = wdev->wiphy; 12845 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12846 struct net_device *netdev = wdev->netdev; 12847 struct sk_buff *msg; 12848 void *hdr; 12849 12850 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 12851 12852 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12853 if (!msg) 12854 return; 12855 12856 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12857 if (!hdr) { 12858 nlmsg_free(msg); 12859 return; 12860 } 12861 12862 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12863 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12864 netdev->ifindex)) || 12865 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12866 NL80211_ATTR_PAD) || 12867 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12868 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12869 NL80211_ATTR_PAD) || 12870 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12871 goto nla_put_failure; 12872 12873 genlmsg_end(msg, hdr); 12874 12875 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12876 NL80211_MCGRP_MLME, gfp); 12877 return; 12878 12879 nla_put_failure: 12880 genlmsg_cancel(msg, hdr); 12881 nlmsg_free(msg); 12882 } 12883 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12884 12885 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12886 const char *mac, gfp_t gfp) 12887 { 12888 struct wireless_dev *wdev = dev->ieee80211_ptr; 12889 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12890 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12891 void **cb; 12892 12893 if (!msg) 12894 return NULL; 12895 12896 cb = (void **)msg->cb; 12897 12898 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12899 if (!cb[0]) { 12900 nlmsg_free(msg); 12901 return NULL; 12902 } 12903 12904 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12905 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12906 goto nla_put_failure; 12907 12908 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12909 goto nla_put_failure; 12910 12911 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12912 if (!cb[1]) 12913 goto nla_put_failure; 12914 12915 cb[2] = rdev; 12916 12917 return msg; 12918 nla_put_failure: 12919 nlmsg_free(msg); 12920 return NULL; 12921 } 12922 12923 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12924 { 12925 void **cb = (void **)msg->cb; 12926 struct cfg80211_registered_device *rdev = cb[2]; 12927 12928 nla_nest_end(msg, cb[1]); 12929 genlmsg_end(msg, cb[0]); 12930 12931 memset(msg->cb, 0, sizeof(msg->cb)); 12932 12933 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12934 NL80211_MCGRP_MLME, gfp); 12935 } 12936 12937 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12938 enum nl80211_cqm_rssi_threshold_event rssi_event, 12939 gfp_t gfp) 12940 { 12941 struct sk_buff *msg; 12942 12943 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12944 12945 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12946 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12947 return; 12948 12949 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12950 if (!msg) 12951 return; 12952 12953 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12954 rssi_event)) 12955 goto nla_put_failure; 12956 12957 cfg80211_send_cqm(msg, gfp); 12958 12959 return; 12960 12961 nla_put_failure: 12962 nlmsg_free(msg); 12963 } 12964 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12965 12966 void cfg80211_cqm_txe_notify(struct net_device *dev, 12967 const u8 *peer, u32 num_packets, 12968 u32 rate, u32 intvl, gfp_t gfp) 12969 { 12970 struct sk_buff *msg; 12971 12972 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12973 if (!msg) 12974 return; 12975 12976 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12977 goto nla_put_failure; 12978 12979 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12980 goto nla_put_failure; 12981 12982 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12983 goto nla_put_failure; 12984 12985 cfg80211_send_cqm(msg, gfp); 12986 return; 12987 12988 nla_put_failure: 12989 nlmsg_free(msg); 12990 } 12991 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12992 12993 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12994 const u8 *peer, u32 num_packets, gfp_t gfp) 12995 { 12996 struct sk_buff *msg; 12997 12998 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12999 13000 msg = cfg80211_prepare_cqm(dev, peer, gfp); 13001 if (!msg) 13002 return; 13003 13004 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 13005 goto nla_put_failure; 13006 13007 cfg80211_send_cqm(msg, gfp); 13008 return; 13009 13010 nla_put_failure: 13011 nlmsg_free(msg); 13012 } 13013 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 13014 13015 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 13016 { 13017 struct sk_buff *msg; 13018 13019 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 13020 if (!msg) 13021 return; 13022 13023 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 13024 goto nla_put_failure; 13025 13026 cfg80211_send_cqm(msg, gfp); 13027 return; 13028 13029 nla_put_failure: 13030 nlmsg_free(msg); 13031 } 13032 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 13033 13034 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 13035 struct net_device *netdev, const u8 *bssid, 13036 const u8 *replay_ctr, gfp_t gfp) 13037 { 13038 struct sk_buff *msg; 13039 struct nlattr *rekey_attr; 13040 void *hdr; 13041 13042 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13043 if (!msg) 13044 return; 13045 13046 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 13047 if (!hdr) { 13048 nlmsg_free(msg); 13049 return; 13050 } 13051 13052 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13053 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13054 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 13055 goto nla_put_failure; 13056 13057 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 13058 if (!rekey_attr) 13059 goto nla_put_failure; 13060 13061 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 13062 NL80211_REPLAY_CTR_LEN, replay_ctr)) 13063 goto nla_put_failure; 13064 13065 nla_nest_end(msg, rekey_attr); 13066 13067 genlmsg_end(msg, hdr); 13068 13069 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13070 NL80211_MCGRP_MLME, gfp); 13071 return; 13072 13073 nla_put_failure: 13074 genlmsg_cancel(msg, hdr); 13075 nlmsg_free(msg); 13076 } 13077 13078 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 13079 const u8 *replay_ctr, gfp_t gfp) 13080 { 13081 struct wireless_dev *wdev = dev->ieee80211_ptr; 13082 struct wiphy *wiphy = wdev->wiphy; 13083 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13084 13085 trace_cfg80211_gtk_rekey_notify(dev, bssid); 13086 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 13087 } 13088 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 13089 13090 static void 13091 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 13092 struct net_device *netdev, int index, 13093 const u8 *bssid, bool preauth, gfp_t gfp) 13094 { 13095 struct sk_buff *msg; 13096 struct nlattr *attr; 13097 void *hdr; 13098 13099 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13100 if (!msg) 13101 return; 13102 13103 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 13104 if (!hdr) { 13105 nlmsg_free(msg); 13106 return; 13107 } 13108 13109 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13110 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 13111 goto nla_put_failure; 13112 13113 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 13114 if (!attr) 13115 goto nla_put_failure; 13116 13117 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 13118 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 13119 (preauth && 13120 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 13121 goto nla_put_failure; 13122 13123 nla_nest_end(msg, attr); 13124 13125 genlmsg_end(msg, hdr); 13126 13127 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13128 NL80211_MCGRP_MLME, gfp); 13129 return; 13130 13131 nla_put_failure: 13132 genlmsg_cancel(msg, hdr); 13133 nlmsg_free(msg); 13134 } 13135 13136 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 13137 const u8 *bssid, bool preauth, gfp_t gfp) 13138 { 13139 struct wireless_dev *wdev = dev->ieee80211_ptr; 13140 struct wiphy *wiphy = wdev->wiphy; 13141 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13142 13143 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 13144 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 13145 } 13146 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 13147 13148 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 13149 struct net_device *netdev, 13150 struct cfg80211_chan_def *chandef, 13151 gfp_t gfp, 13152 enum nl80211_commands notif, 13153 u8 count) 13154 { 13155 struct sk_buff *msg; 13156 void *hdr; 13157 13158 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13159 if (!msg) 13160 return; 13161 13162 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 13163 if (!hdr) { 13164 nlmsg_free(msg); 13165 return; 13166 } 13167 13168 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 13169 goto nla_put_failure; 13170 13171 if (nl80211_send_chandef(msg, chandef)) 13172 goto nla_put_failure; 13173 13174 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 13175 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 13176 goto nla_put_failure; 13177 13178 genlmsg_end(msg, hdr); 13179 13180 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13181 NL80211_MCGRP_MLME, gfp); 13182 return; 13183 13184 nla_put_failure: 13185 genlmsg_cancel(msg, hdr); 13186 nlmsg_free(msg); 13187 } 13188 13189 void cfg80211_ch_switch_notify(struct net_device *dev, 13190 struct cfg80211_chan_def *chandef) 13191 { 13192 struct wireless_dev *wdev = dev->ieee80211_ptr; 13193 struct wiphy *wiphy = wdev->wiphy; 13194 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13195 13196 ASSERT_WDEV_LOCK(wdev); 13197 13198 trace_cfg80211_ch_switch_notify(dev, chandef); 13199 13200 wdev->chandef = *chandef; 13201 wdev->preset_chandef = *chandef; 13202 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 13203 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 13204 } 13205 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 13206 13207 void cfg80211_ch_switch_started_notify(struct net_device *dev, 13208 struct cfg80211_chan_def *chandef, 13209 u8 count) 13210 { 13211 struct wireless_dev *wdev = dev->ieee80211_ptr; 13212 struct wiphy *wiphy = wdev->wiphy; 13213 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13214 13215 trace_cfg80211_ch_switch_started_notify(dev, chandef); 13216 13217 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 13218 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 13219 } 13220 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 13221 13222 void 13223 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 13224 const struct cfg80211_chan_def *chandef, 13225 enum nl80211_radar_event event, 13226 struct net_device *netdev, gfp_t gfp) 13227 { 13228 struct sk_buff *msg; 13229 void *hdr; 13230 13231 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13232 if (!msg) 13233 return; 13234 13235 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 13236 if (!hdr) { 13237 nlmsg_free(msg); 13238 return; 13239 } 13240 13241 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 13242 goto nla_put_failure; 13243 13244 /* NOP and radar events don't need a netdev parameter */ 13245 if (netdev) { 13246 struct wireless_dev *wdev = netdev->ieee80211_ptr; 13247 13248 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13249 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13250 NL80211_ATTR_PAD)) 13251 goto nla_put_failure; 13252 } 13253 13254 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 13255 goto nla_put_failure; 13256 13257 if (nl80211_send_chandef(msg, chandef)) 13258 goto nla_put_failure; 13259 13260 genlmsg_end(msg, hdr); 13261 13262 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13263 NL80211_MCGRP_MLME, gfp); 13264 return; 13265 13266 nla_put_failure: 13267 genlmsg_cancel(msg, hdr); 13268 nlmsg_free(msg); 13269 } 13270 13271 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 13272 u64 cookie, bool acked, gfp_t gfp) 13273 { 13274 struct wireless_dev *wdev = dev->ieee80211_ptr; 13275 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13276 struct sk_buff *msg; 13277 void *hdr; 13278 13279 trace_cfg80211_probe_status(dev, addr, cookie, acked); 13280 13281 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13282 13283 if (!msg) 13284 return; 13285 13286 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 13287 if (!hdr) { 13288 nlmsg_free(msg); 13289 return; 13290 } 13291 13292 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13293 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13294 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 13295 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 13296 NL80211_ATTR_PAD) || 13297 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 13298 goto nla_put_failure; 13299 13300 genlmsg_end(msg, hdr); 13301 13302 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13303 NL80211_MCGRP_MLME, gfp); 13304 return; 13305 13306 nla_put_failure: 13307 genlmsg_cancel(msg, hdr); 13308 nlmsg_free(msg); 13309 } 13310 EXPORT_SYMBOL(cfg80211_probe_status); 13311 13312 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 13313 const u8 *frame, size_t len, 13314 int freq, int sig_dbm) 13315 { 13316 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13317 struct sk_buff *msg; 13318 void *hdr; 13319 struct cfg80211_beacon_registration *reg; 13320 13321 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 13322 13323 spin_lock_bh(&rdev->beacon_registrations_lock); 13324 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 13325 msg = nlmsg_new(len + 100, GFP_ATOMIC); 13326 if (!msg) { 13327 spin_unlock_bh(&rdev->beacon_registrations_lock); 13328 return; 13329 } 13330 13331 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 13332 if (!hdr) 13333 goto nla_put_failure; 13334 13335 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13336 (freq && 13337 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 13338 (sig_dbm && 13339 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 13340 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 13341 goto nla_put_failure; 13342 13343 genlmsg_end(msg, hdr); 13344 13345 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 13346 } 13347 spin_unlock_bh(&rdev->beacon_registrations_lock); 13348 return; 13349 13350 nla_put_failure: 13351 spin_unlock_bh(&rdev->beacon_registrations_lock); 13352 if (hdr) 13353 genlmsg_cancel(msg, hdr); 13354 nlmsg_free(msg); 13355 } 13356 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 13357 13358 #ifdef CONFIG_PM 13359 static int cfg80211_net_detect_results(struct sk_buff *msg, 13360 struct cfg80211_wowlan_wakeup *wakeup) 13361 { 13362 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 13363 struct nlattr *nl_results, *nl_match, *nl_freqs; 13364 int i, j; 13365 13366 nl_results = nla_nest_start( 13367 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 13368 if (!nl_results) 13369 return -EMSGSIZE; 13370 13371 for (i = 0; i < nd->n_matches; i++) { 13372 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 13373 13374 nl_match = nla_nest_start(msg, i); 13375 if (!nl_match) 13376 break; 13377 13378 /* The SSID attribute is optional in nl80211, but for 13379 * simplicity reasons it's always present in the 13380 * cfg80211 structure. If a driver can't pass the 13381 * SSID, that needs to be changed. A zero length SSID 13382 * is still a valid SSID (wildcard), so it cannot be 13383 * used for this purpose. 13384 */ 13385 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 13386 match->ssid.ssid)) { 13387 nla_nest_cancel(msg, nl_match); 13388 goto out; 13389 } 13390 13391 if (match->n_channels) { 13392 nl_freqs = nla_nest_start( 13393 msg, NL80211_ATTR_SCAN_FREQUENCIES); 13394 if (!nl_freqs) { 13395 nla_nest_cancel(msg, nl_match); 13396 goto out; 13397 } 13398 13399 for (j = 0; j < match->n_channels; j++) { 13400 if (nla_put_u32(msg, j, match->channels[j])) { 13401 nla_nest_cancel(msg, nl_freqs); 13402 nla_nest_cancel(msg, nl_match); 13403 goto out; 13404 } 13405 } 13406 13407 nla_nest_end(msg, nl_freqs); 13408 } 13409 13410 nla_nest_end(msg, nl_match); 13411 } 13412 13413 out: 13414 nla_nest_end(msg, nl_results); 13415 return 0; 13416 } 13417 13418 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 13419 struct cfg80211_wowlan_wakeup *wakeup, 13420 gfp_t gfp) 13421 { 13422 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13423 struct sk_buff *msg; 13424 void *hdr; 13425 int size = 200; 13426 13427 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 13428 13429 if (wakeup) 13430 size += wakeup->packet_present_len; 13431 13432 msg = nlmsg_new(size, gfp); 13433 if (!msg) 13434 return; 13435 13436 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 13437 if (!hdr) 13438 goto free_msg; 13439 13440 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13441 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13442 NL80211_ATTR_PAD)) 13443 goto free_msg; 13444 13445 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13446 wdev->netdev->ifindex)) 13447 goto free_msg; 13448 13449 if (wakeup) { 13450 struct nlattr *reasons; 13451 13452 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 13453 if (!reasons) 13454 goto free_msg; 13455 13456 if (wakeup->disconnect && 13457 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 13458 goto free_msg; 13459 if (wakeup->magic_pkt && 13460 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 13461 goto free_msg; 13462 if (wakeup->gtk_rekey_failure && 13463 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 13464 goto free_msg; 13465 if (wakeup->eap_identity_req && 13466 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 13467 goto free_msg; 13468 if (wakeup->four_way_handshake && 13469 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 13470 goto free_msg; 13471 if (wakeup->rfkill_release && 13472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 13473 goto free_msg; 13474 13475 if (wakeup->pattern_idx >= 0 && 13476 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 13477 wakeup->pattern_idx)) 13478 goto free_msg; 13479 13480 if (wakeup->tcp_match && 13481 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 13482 goto free_msg; 13483 13484 if (wakeup->tcp_connlost && 13485 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 13486 goto free_msg; 13487 13488 if (wakeup->tcp_nomoretokens && 13489 nla_put_flag(msg, 13490 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 13491 goto free_msg; 13492 13493 if (wakeup->packet) { 13494 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 13495 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 13496 13497 if (!wakeup->packet_80211) { 13498 pkt_attr = 13499 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 13500 len_attr = 13501 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 13502 } 13503 13504 if (wakeup->packet_len && 13505 nla_put_u32(msg, len_attr, wakeup->packet_len)) 13506 goto free_msg; 13507 13508 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 13509 wakeup->packet)) 13510 goto free_msg; 13511 } 13512 13513 if (wakeup->net_detect && 13514 cfg80211_net_detect_results(msg, wakeup)) 13515 goto free_msg; 13516 13517 nla_nest_end(msg, reasons); 13518 } 13519 13520 genlmsg_end(msg, hdr); 13521 13522 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13523 NL80211_MCGRP_MLME, gfp); 13524 return; 13525 13526 free_msg: 13527 nlmsg_free(msg); 13528 } 13529 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 13530 #endif 13531 13532 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 13533 enum nl80211_tdls_operation oper, 13534 u16 reason_code, gfp_t gfp) 13535 { 13536 struct wireless_dev *wdev = dev->ieee80211_ptr; 13537 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13538 struct sk_buff *msg; 13539 void *hdr; 13540 13541 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 13542 reason_code); 13543 13544 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13545 if (!msg) 13546 return; 13547 13548 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 13549 if (!hdr) { 13550 nlmsg_free(msg); 13551 return; 13552 } 13553 13554 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13555 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13556 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 13557 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 13558 (reason_code > 0 && 13559 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 13560 goto nla_put_failure; 13561 13562 genlmsg_end(msg, hdr); 13563 13564 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13565 NL80211_MCGRP_MLME, gfp); 13566 return; 13567 13568 nla_put_failure: 13569 genlmsg_cancel(msg, hdr); 13570 nlmsg_free(msg); 13571 } 13572 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 13573 13574 static int nl80211_netlink_notify(struct notifier_block * nb, 13575 unsigned long state, 13576 void *_notify) 13577 { 13578 struct netlink_notify *notify = _notify; 13579 struct cfg80211_registered_device *rdev; 13580 struct wireless_dev *wdev; 13581 struct cfg80211_beacon_registration *reg, *tmp; 13582 13583 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 13584 return NOTIFY_DONE; 13585 13586 rcu_read_lock(); 13587 13588 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 13589 bool schedule_destroy_work = false; 13590 bool schedule_scan_stop = false; 13591 struct cfg80211_sched_scan_request *sched_scan_req = 13592 rcu_dereference(rdev->sched_scan_req); 13593 13594 if (sched_scan_req && notify->portid && 13595 sched_scan_req->owner_nlportid == notify->portid) 13596 schedule_scan_stop = true; 13597 13598 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 13599 cfg80211_mlme_unregister_socket(wdev, notify->portid); 13600 13601 if (wdev->owner_nlportid == notify->portid) 13602 schedule_destroy_work = true; 13603 } 13604 13605 spin_lock_bh(&rdev->beacon_registrations_lock); 13606 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 13607 list) { 13608 if (reg->nlportid == notify->portid) { 13609 list_del(®->list); 13610 kfree(reg); 13611 break; 13612 } 13613 } 13614 spin_unlock_bh(&rdev->beacon_registrations_lock); 13615 13616 if (schedule_destroy_work) { 13617 struct cfg80211_iface_destroy *destroy; 13618 13619 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 13620 if (destroy) { 13621 destroy->nlportid = notify->portid; 13622 spin_lock(&rdev->destroy_list_lock); 13623 list_add(&destroy->list, &rdev->destroy_list); 13624 spin_unlock(&rdev->destroy_list_lock); 13625 schedule_work(&rdev->destroy_work); 13626 } 13627 } else if (schedule_scan_stop) { 13628 sched_scan_req->owner_nlportid = 0; 13629 13630 if (rdev->ops->sched_scan_stop && 13631 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 13632 schedule_work(&rdev->sched_scan_stop_wk); 13633 } 13634 } 13635 13636 rcu_read_unlock(); 13637 13638 /* 13639 * It is possible that the user space process that is controlling the 13640 * indoor setting disappeared, so notify the regulatory core. 13641 */ 13642 regulatory_netlink_notify(notify->portid); 13643 return NOTIFY_OK; 13644 } 13645 13646 static struct notifier_block nl80211_netlink_notifier = { 13647 .notifier_call = nl80211_netlink_notify, 13648 }; 13649 13650 void cfg80211_ft_event(struct net_device *netdev, 13651 struct cfg80211_ft_event_params *ft_event) 13652 { 13653 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 13654 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13655 struct sk_buff *msg; 13656 void *hdr; 13657 13658 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 13659 13660 if (!ft_event->target_ap) 13661 return; 13662 13663 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13664 if (!msg) 13665 return; 13666 13667 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 13668 if (!hdr) 13669 goto out; 13670 13671 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13672 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13673 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 13674 goto out; 13675 13676 if (ft_event->ies && 13677 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 13678 goto out; 13679 if (ft_event->ric_ies && 13680 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 13681 ft_event->ric_ies)) 13682 goto out; 13683 13684 genlmsg_end(msg, hdr); 13685 13686 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13687 NL80211_MCGRP_MLME, GFP_KERNEL); 13688 return; 13689 out: 13690 nlmsg_free(msg); 13691 } 13692 EXPORT_SYMBOL(cfg80211_ft_event); 13693 13694 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 13695 { 13696 struct cfg80211_registered_device *rdev; 13697 struct sk_buff *msg; 13698 void *hdr; 13699 u32 nlportid; 13700 13701 rdev = wiphy_to_rdev(wdev->wiphy); 13702 if (!rdev->crit_proto_nlportid) 13703 return; 13704 13705 nlportid = rdev->crit_proto_nlportid; 13706 rdev->crit_proto_nlportid = 0; 13707 13708 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13709 if (!msg) 13710 return; 13711 13712 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 13713 if (!hdr) 13714 goto nla_put_failure; 13715 13716 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13717 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13718 NL80211_ATTR_PAD)) 13719 goto nla_put_failure; 13720 13721 genlmsg_end(msg, hdr); 13722 13723 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 13724 return; 13725 13726 nla_put_failure: 13727 if (hdr) 13728 genlmsg_cancel(msg, hdr); 13729 nlmsg_free(msg); 13730 } 13731 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 13732 13733 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 13734 { 13735 struct wiphy *wiphy = wdev->wiphy; 13736 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13737 struct sk_buff *msg; 13738 void *hdr; 13739 13740 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13741 if (!msg) 13742 return; 13743 13744 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 13745 if (!hdr) 13746 goto out; 13747 13748 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13749 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 13750 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13751 NL80211_ATTR_PAD)) 13752 goto out; 13753 13754 genlmsg_end(msg, hdr); 13755 13756 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 13757 NL80211_MCGRP_MLME, GFP_KERNEL); 13758 return; 13759 out: 13760 nlmsg_free(msg); 13761 } 13762 13763 /* initialisation/exit functions */ 13764 13765 int nl80211_init(void) 13766 { 13767 int err; 13768 13769 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 13770 nl80211_mcgrps); 13771 if (err) 13772 return err; 13773 13774 err = netlink_register_notifier(&nl80211_netlink_notifier); 13775 if (err) 13776 goto err_out; 13777 13778 return 0; 13779 err_out: 13780 genl_unregister_family(&nl80211_fam); 13781 return err; 13782 } 13783 13784 void nl80211_exit(void) 13785 { 13786 netlink_unregister_notifier(&nl80211_netlink_notifier); 13787 genl_unregister_family(&nl80211_fam); 13788 } 13789