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 5384 #define FILL_IN_MESH_PARAM_IF_SET(tb, cfg, param, min, max, mask, attr, fn) \ 5385 do { \ 5386 if (tb[attr]) { \ 5387 if (fn(tb[attr], min, max, &cfg->param)) \ 5388 return -EINVAL; \ 5389 mask |= (1 << (attr - 1)); \ 5390 } \ 5391 } while (0) 5392 5393 if (!info->attrs[NL80211_ATTR_MESH_CONFIG]) 5394 return -EINVAL; 5395 if (nla_parse_nested(tb, NL80211_MESHCONF_ATTR_MAX, 5396 info->attrs[NL80211_ATTR_MESH_CONFIG], 5397 nl80211_meshconf_params_policy)) 5398 return -EINVAL; 5399 5400 /* This makes sure that there aren't more than 32 mesh config 5401 * parameters (otherwise our bitfield scheme would not work.) */ 5402 BUILD_BUG_ON(NL80211_MESHCONF_ATTR_MAX > 32); 5403 5404 /* Fill in the params struct */ 5405 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshRetryTimeout, 1, 255, 5406 mask, NL80211_MESHCONF_RETRY_TIMEOUT, 5407 nl80211_check_u16); 5408 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshConfirmTimeout, 1, 255, 5409 mask, NL80211_MESHCONF_CONFIRM_TIMEOUT, 5410 nl80211_check_u16); 5411 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHoldingTimeout, 1, 255, 5412 mask, NL80211_MESHCONF_HOLDING_TIMEOUT, 5413 nl80211_check_u16); 5414 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxPeerLinks, 0, 255, 5415 mask, NL80211_MESHCONF_MAX_PEER_LINKS, 5416 nl80211_check_u16); 5417 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshMaxRetries, 0, 16, 5418 mask, NL80211_MESHCONF_MAX_RETRIES, 5419 nl80211_check_u8); 5420 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshTTL, 1, 255, 5421 mask, NL80211_MESHCONF_TTL, nl80211_check_u8); 5422 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, element_ttl, 1, 255, 5423 mask, NL80211_MESHCONF_ELEMENT_TTL, 5424 nl80211_check_u8); 5425 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, auto_open_plinks, 0, 1, 5426 mask, NL80211_MESHCONF_AUTO_OPEN_PLINKS, 5427 nl80211_check_bool); 5428 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshNbrOffsetMaxNeighbor, 5429 1, 255, mask, 5430 NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, 5431 nl80211_check_u32); 5432 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPmaxPREQretries, 0, 255, 5433 mask, NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, 5434 nl80211_check_u8); 5435 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, path_refresh_time, 1, 65535, 5436 mask, NL80211_MESHCONF_PATH_REFRESH_TIME, 5437 nl80211_check_u32); 5438 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, min_discovery_timeout, 1, 65535, 5439 mask, NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, 5440 nl80211_check_u16); 5441 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathTimeout, 5442 1, 65535, mask, 5443 NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, 5444 nl80211_check_u32); 5445 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPpreqMinInterval, 5446 1, 65535, mask, 5447 NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, 5448 nl80211_check_u16); 5449 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPperrMinInterval, 5450 1, 65535, mask, 5451 NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, 5452 nl80211_check_u16); 5453 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5454 dot11MeshHWMPnetDiameterTraversalTime, 5455 1, 65535, mask, 5456 NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME, 5457 nl80211_check_u16); 5458 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRootMode, 0, 4, 5459 mask, NL80211_MESHCONF_HWMP_ROOTMODE, 5460 nl80211_check_u8); 5461 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPRannInterval, 1, 65535, 5462 mask, NL80211_MESHCONF_HWMP_RANN_INTERVAL, 5463 nl80211_check_u16); 5464 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5465 dot11MeshGateAnnouncementProtocol, 0, 1, 5466 mask, NL80211_MESHCONF_GATE_ANNOUNCEMENTS, 5467 nl80211_check_bool); 5468 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshForwarding, 0, 1, 5469 mask, NL80211_MESHCONF_FORWARDING, 5470 nl80211_check_bool); 5471 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, rssi_threshold, -255, 0, 5472 mask, NL80211_MESHCONF_RSSI_THRESHOLD, 5473 nl80211_check_s32); 5474 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, ht_opmode, 0, 16, 5475 mask, NL80211_MESHCONF_HT_OPMODE, 5476 nl80211_check_u16); 5477 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMPactivePathToRootTimeout, 5478 1, 65535, mask, 5479 NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, 5480 nl80211_check_u32); 5481 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshHWMProotInterval, 1, 65535, 5482 mask, NL80211_MESHCONF_HWMP_ROOT_INTERVAL, 5483 nl80211_check_u16); 5484 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, 5485 dot11MeshHWMPconfirmationInterval, 5486 1, 65535, mask, 5487 NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, 5488 nl80211_check_u16); 5489 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, power_mode, 5490 NL80211_MESH_POWER_ACTIVE, 5491 NL80211_MESH_POWER_MAX, 5492 mask, NL80211_MESHCONF_POWER_MODE, 5493 nl80211_check_u32); 5494 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, dot11MeshAwakeWindowDuration, 5495 0, 65535, mask, 5496 NL80211_MESHCONF_AWAKE_WINDOW, nl80211_check_u16); 5497 FILL_IN_MESH_PARAM_IF_SET(tb, cfg, plink_timeout, 0, 0xffffffff, 5498 mask, NL80211_MESHCONF_PLINK_TIMEOUT, 5499 nl80211_check_u32); 5500 if (mask_out) 5501 *mask_out = mask; 5502 5503 return 0; 5504 5505 #undef FILL_IN_MESH_PARAM_IF_SET 5506 } 5507 5508 static int nl80211_parse_mesh_setup(struct genl_info *info, 5509 struct mesh_setup *setup) 5510 { 5511 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5512 struct nlattr *tb[NL80211_MESH_SETUP_ATTR_MAX + 1]; 5513 5514 if (!info->attrs[NL80211_ATTR_MESH_SETUP]) 5515 return -EINVAL; 5516 if (nla_parse_nested(tb, NL80211_MESH_SETUP_ATTR_MAX, 5517 info->attrs[NL80211_ATTR_MESH_SETUP], 5518 nl80211_mesh_setup_params_policy)) 5519 return -EINVAL; 5520 5521 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC]) 5522 setup->sync_method = 5523 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_SYNC])) ? 5524 IEEE80211_SYNC_METHOD_VENDOR : 5525 IEEE80211_SYNC_METHOD_NEIGHBOR_OFFSET; 5526 5527 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL]) 5528 setup->path_sel_proto = 5529 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_PATH_SEL])) ? 5530 IEEE80211_PATH_PROTOCOL_VENDOR : 5531 IEEE80211_PATH_PROTOCOL_HWMP; 5532 5533 if (tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC]) 5534 setup->path_metric = 5535 (nla_get_u8(tb[NL80211_MESH_SETUP_ENABLE_VENDOR_METRIC])) ? 5536 IEEE80211_PATH_METRIC_VENDOR : 5537 IEEE80211_PATH_METRIC_AIRTIME; 5538 5539 if (tb[NL80211_MESH_SETUP_IE]) { 5540 struct nlattr *ieattr = 5541 tb[NL80211_MESH_SETUP_IE]; 5542 if (!is_valid_ie_attr(ieattr)) 5543 return -EINVAL; 5544 setup->ie = nla_data(ieattr); 5545 setup->ie_len = nla_len(ieattr); 5546 } 5547 if (tb[NL80211_MESH_SETUP_USERSPACE_MPM] && 5548 !(rdev->wiphy.features & NL80211_FEATURE_USERSPACE_MPM)) 5549 return -EINVAL; 5550 setup->user_mpm = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_MPM]); 5551 setup->is_authenticated = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AUTH]); 5552 setup->is_secure = nla_get_flag(tb[NL80211_MESH_SETUP_USERSPACE_AMPE]); 5553 if (setup->is_secure) 5554 setup->user_mpm = true; 5555 5556 if (tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]) { 5557 if (!setup->user_mpm) 5558 return -EINVAL; 5559 setup->auth_id = 5560 nla_get_u8(tb[NL80211_MESH_SETUP_AUTH_PROTOCOL]); 5561 } 5562 5563 return 0; 5564 } 5565 5566 static int nl80211_update_mesh_config(struct sk_buff *skb, 5567 struct genl_info *info) 5568 { 5569 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 5570 struct net_device *dev = info->user_ptr[1]; 5571 struct wireless_dev *wdev = dev->ieee80211_ptr; 5572 struct mesh_config cfg; 5573 u32 mask; 5574 int err; 5575 5576 if (wdev->iftype != NL80211_IFTYPE_MESH_POINT) 5577 return -EOPNOTSUPP; 5578 5579 if (!rdev->ops->update_mesh_config) 5580 return -EOPNOTSUPP; 5581 5582 err = nl80211_parse_mesh_config(info, &cfg, &mask); 5583 if (err) 5584 return err; 5585 5586 wdev_lock(wdev); 5587 if (!wdev->mesh_id_len) 5588 err = -ENOLINK; 5589 5590 if (!err) 5591 err = rdev_update_mesh_config(rdev, dev, mask, &cfg); 5592 5593 wdev_unlock(wdev); 5594 5595 return err; 5596 } 5597 5598 static int nl80211_put_regdom(const struct ieee80211_regdomain *regdom, 5599 struct sk_buff *msg) 5600 { 5601 struct nlattr *nl_reg_rules; 5602 unsigned int i; 5603 5604 if (nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, regdom->alpha2) || 5605 (regdom->dfs_region && 5606 nla_put_u8(msg, NL80211_ATTR_DFS_REGION, regdom->dfs_region))) 5607 goto nla_put_failure; 5608 5609 nl_reg_rules = nla_nest_start(msg, NL80211_ATTR_REG_RULES); 5610 if (!nl_reg_rules) 5611 goto nla_put_failure; 5612 5613 for (i = 0; i < regdom->n_reg_rules; i++) { 5614 struct nlattr *nl_reg_rule; 5615 const struct ieee80211_reg_rule *reg_rule; 5616 const struct ieee80211_freq_range *freq_range; 5617 const struct ieee80211_power_rule *power_rule; 5618 unsigned int max_bandwidth_khz; 5619 5620 reg_rule = ®dom->reg_rules[i]; 5621 freq_range = ®_rule->freq_range; 5622 power_rule = ®_rule->power_rule; 5623 5624 nl_reg_rule = nla_nest_start(msg, i); 5625 if (!nl_reg_rule) 5626 goto nla_put_failure; 5627 5628 max_bandwidth_khz = freq_range->max_bandwidth_khz; 5629 if (!max_bandwidth_khz) 5630 max_bandwidth_khz = reg_get_max_bandwidth(regdom, 5631 reg_rule); 5632 5633 if (nla_put_u32(msg, NL80211_ATTR_REG_RULE_FLAGS, 5634 reg_rule->flags) || 5635 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_START, 5636 freq_range->start_freq_khz) || 5637 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_END, 5638 freq_range->end_freq_khz) || 5639 nla_put_u32(msg, NL80211_ATTR_FREQ_RANGE_MAX_BW, 5640 max_bandwidth_khz) || 5641 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN, 5642 power_rule->max_antenna_gain) || 5643 nla_put_u32(msg, NL80211_ATTR_POWER_RULE_MAX_EIRP, 5644 power_rule->max_eirp) || 5645 nla_put_u32(msg, NL80211_ATTR_DFS_CAC_TIME, 5646 reg_rule->dfs_cac_ms)) 5647 goto nla_put_failure; 5648 5649 nla_nest_end(msg, nl_reg_rule); 5650 } 5651 5652 nla_nest_end(msg, nl_reg_rules); 5653 return 0; 5654 5655 nla_put_failure: 5656 return -EMSGSIZE; 5657 } 5658 5659 static int nl80211_get_reg_do(struct sk_buff *skb, struct genl_info *info) 5660 { 5661 const struct ieee80211_regdomain *regdom = NULL; 5662 struct cfg80211_registered_device *rdev; 5663 struct wiphy *wiphy = NULL; 5664 struct sk_buff *msg; 5665 void *hdr; 5666 5667 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 5668 if (!msg) 5669 return -ENOBUFS; 5670 5671 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 5672 NL80211_CMD_GET_REG); 5673 if (!hdr) 5674 goto put_failure; 5675 5676 if (info->attrs[NL80211_ATTR_WIPHY]) { 5677 bool self_managed; 5678 5679 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 5680 if (IS_ERR(rdev)) { 5681 nlmsg_free(msg); 5682 return PTR_ERR(rdev); 5683 } 5684 5685 wiphy = &rdev->wiphy; 5686 self_managed = wiphy->regulatory_flags & 5687 REGULATORY_WIPHY_SELF_MANAGED; 5688 regdom = get_wiphy_regdom(wiphy); 5689 5690 /* a self-managed-reg device must have a private regdom */ 5691 if (WARN_ON(!regdom && self_managed)) { 5692 nlmsg_free(msg); 5693 return -EINVAL; 5694 } 5695 5696 if (regdom && 5697 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5698 goto nla_put_failure; 5699 } 5700 5701 if (!wiphy && reg_last_request_cell_base() && 5702 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5703 NL80211_USER_REG_HINT_CELL_BASE)) 5704 goto nla_put_failure; 5705 5706 rcu_read_lock(); 5707 5708 if (!regdom) 5709 regdom = rcu_dereference(cfg80211_regdomain); 5710 5711 if (nl80211_put_regdom(regdom, msg)) 5712 goto nla_put_failure_rcu; 5713 5714 rcu_read_unlock(); 5715 5716 genlmsg_end(msg, hdr); 5717 return genlmsg_reply(msg, info); 5718 5719 nla_put_failure_rcu: 5720 rcu_read_unlock(); 5721 nla_put_failure: 5722 genlmsg_cancel(msg, hdr); 5723 put_failure: 5724 nlmsg_free(msg); 5725 return -EMSGSIZE; 5726 } 5727 5728 static int nl80211_send_regdom(struct sk_buff *msg, struct netlink_callback *cb, 5729 u32 seq, int flags, struct wiphy *wiphy, 5730 const struct ieee80211_regdomain *regdom) 5731 { 5732 void *hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 5733 NL80211_CMD_GET_REG); 5734 5735 if (!hdr) 5736 return -1; 5737 5738 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 5739 5740 if (nl80211_put_regdom(regdom, msg)) 5741 goto nla_put_failure; 5742 5743 if (!wiphy && reg_last_request_cell_base() && 5744 nla_put_u32(msg, NL80211_ATTR_USER_REG_HINT_TYPE, 5745 NL80211_USER_REG_HINT_CELL_BASE)) 5746 goto nla_put_failure; 5747 5748 if (wiphy && 5749 nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 5750 goto nla_put_failure; 5751 5752 if (wiphy && wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 5753 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 5754 goto nla_put_failure; 5755 5756 genlmsg_end(msg, hdr); 5757 return 0; 5758 5759 nla_put_failure: 5760 genlmsg_cancel(msg, hdr); 5761 return -EMSGSIZE; 5762 } 5763 5764 static int nl80211_get_reg_dump(struct sk_buff *skb, 5765 struct netlink_callback *cb) 5766 { 5767 const struct ieee80211_regdomain *regdom = NULL; 5768 struct cfg80211_registered_device *rdev; 5769 int err, reg_idx, start = cb->args[2]; 5770 5771 rtnl_lock(); 5772 5773 if (cfg80211_regdomain && start == 0) { 5774 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5775 NLM_F_MULTI, NULL, 5776 rtnl_dereference(cfg80211_regdomain)); 5777 if (err < 0) 5778 goto out_err; 5779 } 5780 5781 /* the global regdom is idx 0 */ 5782 reg_idx = 1; 5783 list_for_each_entry(rdev, &cfg80211_rdev_list, list) { 5784 regdom = get_wiphy_regdom(&rdev->wiphy); 5785 if (!regdom) 5786 continue; 5787 5788 if (++reg_idx <= start) 5789 continue; 5790 5791 err = nl80211_send_regdom(skb, cb, cb->nlh->nlmsg_seq, 5792 NLM_F_MULTI, &rdev->wiphy, regdom); 5793 if (err < 0) { 5794 reg_idx--; 5795 break; 5796 } 5797 } 5798 5799 cb->args[2] = reg_idx; 5800 err = skb->len; 5801 out_err: 5802 rtnl_unlock(); 5803 return err; 5804 } 5805 5806 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 5807 static const struct nla_policy reg_rule_policy[NL80211_REG_RULE_ATTR_MAX + 1] = { 5808 [NL80211_ATTR_REG_RULE_FLAGS] = { .type = NLA_U32 }, 5809 [NL80211_ATTR_FREQ_RANGE_START] = { .type = NLA_U32 }, 5810 [NL80211_ATTR_FREQ_RANGE_END] = { .type = NLA_U32 }, 5811 [NL80211_ATTR_FREQ_RANGE_MAX_BW] = { .type = NLA_U32 }, 5812 [NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN] = { .type = NLA_U32 }, 5813 [NL80211_ATTR_POWER_RULE_MAX_EIRP] = { .type = NLA_U32 }, 5814 [NL80211_ATTR_DFS_CAC_TIME] = { .type = NLA_U32 }, 5815 }; 5816 5817 static int parse_reg_rule(struct nlattr *tb[], 5818 struct ieee80211_reg_rule *reg_rule) 5819 { 5820 struct ieee80211_freq_range *freq_range = ®_rule->freq_range; 5821 struct ieee80211_power_rule *power_rule = ®_rule->power_rule; 5822 5823 if (!tb[NL80211_ATTR_REG_RULE_FLAGS]) 5824 return -EINVAL; 5825 if (!tb[NL80211_ATTR_FREQ_RANGE_START]) 5826 return -EINVAL; 5827 if (!tb[NL80211_ATTR_FREQ_RANGE_END]) 5828 return -EINVAL; 5829 if (!tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]) 5830 return -EINVAL; 5831 if (!tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]) 5832 return -EINVAL; 5833 5834 reg_rule->flags = nla_get_u32(tb[NL80211_ATTR_REG_RULE_FLAGS]); 5835 5836 freq_range->start_freq_khz = 5837 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_START]); 5838 freq_range->end_freq_khz = 5839 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_END]); 5840 freq_range->max_bandwidth_khz = 5841 nla_get_u32(tb[NL80211_ATTR_FREQ_RANGE_MAX_BW]); 5842 5843 power_rule->max_eirp = 5844 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_EIRP]); 5845 5846 if (tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]) 5847 power_rule->max_antenna_gain = 5848 nla_get_u32(tb[NL80211_ATTR_POWER_RULE_MAX_ANT_GAIN]); 5849 5850 if (tb[NL80211_ATTR_DFS_CAC_TIME]) 5851 reg_rule->dfs_cac_ms = 5852 nla_get_u32(tb[NL80211_ATTR_DFS_CAC_TIME]); 5853 5854 return 0; 5855 } 5856 5857 static int nl80211_set_reg(struct sk_buff *skb, struct genl_info *info) 5858 { 5859 struct nlattr *tb[NL80211_REG_RULE_ATTR_MAX + 1]; 5860 struct nlattr *nl_reg_rule; 5861 char *alpha2; 5862 int rem_reg_rules, r; 5863 u32 num_rules = 0, rule_idx = 0, size_of_regd; 5864 enum nl80211_dfs_regions dfs_region = NL80211_DFS_UNSET; 5865 struct ieee80211_regdomain *rd; 5866 5867 if (!info->attrs[NL80211_ATTR_REG_ALPHA2]) 5868 return -EINVAL; 5869 5870 if (!info->attrs[NL80211_ATTR_REG_RULES]) 5871 return -EINVAL; 5872 5873 alpha2 = nla_data(info->attrs[NL80211_ATTR_REG_ALPHA2]); 5874 5875 if (info->attrs[NL80211_ATTR_DFS_REGION]) 5876 dfs_region = nla_get_u8(info->attrs[NL80211_ATTR_DFS_REGION]); 5877 5878 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5879 rem_reg_rules) { 5880 num_rules++; 5881 if (num_rules > NL80211_MAX_SUPP_REG_RULES) 5882 return -EINVAL; 5883 } 5884 5885 if (!reg_is_valid_request(alpha2)) 5886 return -EINVAL; 5887 5888 size_of_regd = sizeof(struct ieee80211_regdomain) + 5889 num_rules * sizeof(struct ieee80211_reg_rule); 5890 5891 rd = kzalloc(size_of_regd, GFP_KERNEL); 5892 if (!rd) 5893 return -ENOMEM; 5894 5895 rd->n_reg_rules = num_rules; 5896 rd->alpha2[0] = alpha2[0]; 5897 rd->alpha2[1] = alpha2[1]; 5898 5899 /* 5900 * Disable DFS master mode if the DFS region was 5901 * not supported or known on this kernel. 5902 */ 5903 if (reg_supported_dfs_region(dfs_region)) 5904 rd->dfs_region = dfs_region; 5905 5906 nla_for_each_nested(nl_reg_rule, info->attrs[NL80211_ATTR_REG_RULES], 5907 rem_reg_rules) { 5908 r = nla_parse(tb, NL80211_REG_RULE_ATTR_MAX, 5909 nla_data(nl_reg_rule), nla_len(nl_reg_rule), 5910 reg_rule_policy); 5911 if (r) 5912 goto bad_reg; 5913 r = parse_reg_rule(tb, &rd->reg_rules[rule_idx]); 5914 if (r) 5915 goto bad_reg; 5916 5917 rule_idx++; 5918 5919 if (rule_idx > NL80211_MAX_SUPP_REG_RULES) { 5920 r = -EINVAL; 5921 goto bad_reg; 5922 } 5923 } 5924 5925 /* set_regdom takes ownership of rd */ 5926 return set_regdom(rd, REGD_SOURCE_CRDA); 5927 bad_reg: 5928 kfree(rd); 5929 return r; 5930 } 5931 #endif /* CONFIG_CFG80211_CRDA_SUPPORT */ 5932 5933 static int validate_scan_freqs(struct nlattr *freqs) 5934 { 5935 struct nlattr *attr1, *attr2; 5936 int n_channels = 0, tmp1, tmp2; 5937 5938 nla_for_each_nested(attr1, freqs, tmp1) { 5939 n_channels++; 5940 /* 5941 * Some hardware has a limited channel list for 5942 * scanning, and it is pretty much nonsensical 5943 * to scan for a channel twice, so disallow that 5944 * and don't require drivers to check that the 5945 * channel list they get isn't longer than what 5946 * they can scan, as long as they can scan all 5947 * the channels they registered at once. 5948 */ 5949 nla_for_each_nested(attr2, freqs, tmp2) 5950 if (attr1 != attr2 && 5951 nla_get_u32(attr1) == nla_get_u32(attr2)) 5952 return 0; 5953 } 5954 5955 return n_channels; 5956 } 5957 5958 static bool is_band_valid(struct wiphy *wiphy, enum nl80211_band b) 5959 { 5960 return b < NUM_NL80211_BANDS && wiphy->bands[b]; 5961 } 5962 5963 static int parse_bss_select(struct nlattr *nla, struct wiphy *wiphy, 5964 struct cfg80211_bss_selection *bss_select) 5965 { 5966 struct nlattr *attr[NL80211_BSS_SELECT_ATTR_MAX + 1]; 5967 struct nlattr *nest; 5968 int err; 5969 bool found = false; 5970 int i; 5971 5972 /* only process one nested attribute */ 5973 nest = nla_data(nla); 5974 if (!nla_ok(nest, nla_len(nest))) 5975 return -EINVAL; 5976 5977 err = nla_parse(attr, NL80211_BSS_SELECT_ATTR_MAX, nla_data(nest), 5978 nla_len(nest), nl80211_bss_select_policy); 5979 if (err) 5980 return err; 5981 5982 /* only one attribute may be given */ 5983 for (i = 0; i <= NL80211_BSS_SELECT_ATTR_MAX; i++) { 5984 if (attr[i]) { 5985 if (found) 5986 return -EINVAL; 5987 found = true; 5988 } 5989 } 5990 5991 bss_select->behaviour = __NL80211_BSS_SELECT_ATTR_INVALID; 5992 5993 if (attr[NL80211_BSS_SELECT_ATTR_RSSI]) 5994 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI; 5995 5996 if (attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]) { 5997 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_BAND_PREF; 5998 bss_select->param.band_pref = 5999 nla_get_u32(attr[NL80211_BSS_SELECT_ATTR_BAND_PREF]); 6000 if (!is_band_valid(wiphy, bss_select->param.band_pref)) 6001 return -EINVAL; 6002 } 6003 6004 if (attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]) { 6005 struct nl80211_bss_select_rssi_adjust *adj_param; 6006 6007 adj_param = nla_data(attr[NL80211_BSS_SELECT_ATTR_RSSI_ADJUST]); 6008 bss_select->behaviour = NL80211_BSS_SELECT_ATTR_RSSI_ADJUST; 6009 bss_select->param.adjust.band = adj_param->band; 6010 bss_select->param.adjust.delta = adj_param->delta; 6011 if (!is_band_valid(wiphy, bss_select->param.adjust.band)) 6012 return -EINVAL; 6013 } 6014 6015 /* user-space did not provide behaviour attribute */ 6016 if (bss_select->behaviour == __NL80211_BSS_SELECT_ATTR_INVALID) 6017 return -EINVAL; 6018 6019 if (!(wiphy->bss_select_support & BIT(bss_select->behaviour))) 6020 return -EINVAL; 6021 6022 return 0; 6023 } 6024 6025 static int nl80211_parse_random_mac(struct nlattr **attrs, 6026 u8 *mac_addr, u8 *mac_addr_mask) 6027 { 6028 int i; 6029 6030 if (!attrs[NL80211_ATTR_MAC] && !attrs[NL80211_ATTR_MAC_MASK]) { 6031 eth_zero_addr(mac_addr); 6032 eth_zero_addr(mac_addr_mask); 6033 mac_addr[0] = 0x2; 6034 mac_addr_mask[0] = 0x3; 6035 6036 return 0; 6037 } 6038 6039 /* need both or none */ 6040 if (!attrs[NL80211_ATTR_MAC] || !attrs[NL80211_ATTR_MAC_MASK]) 6041 return -EINVAL; 6042 6043 memcpy(mac_addr, nla_data(attrs[NL80211_ATTR_MAC]), ETH_ALEN); 6044 memcpy(mac_addr_mask, nla_data(attrs[NL80211_ATTR_MAC_MASK]), ETH_ALEN); 6045 6046 /* don't allow or configure an mcast address */ 6047 if (!is_multicast_ether_addr(mac_addr_mask) || 6048 is_multicast_ether_addr(mac_addr)) 6049 return -EINVAL; 6050 6051 /* 6052 * allow users to pass a MAC address that has bits set outside 6053 * of the mask, but don't bother drivers with having to deal 6054 * with such bits 6055 */ 6056 for (i = 0; i < ETH_ALEN; i++) 6057 mac_addr[i] &= mac_addr_mask[i]; 6058 6059 return 0; 6060 } 6061 6062 static int nl80211_trigger_scan(struct sk_buff *skb, struct genl_info *info) 6063 { 6064 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6065 struct wireless_dev *wdev = info->user_ptr[1]; 6066 struct cfg80211_scan_request *request; 6067 struct nlattr *attr; 6068 struct wiphy *wiphy; 6069 int err, tmp, n_ssids = 0, n_channels, i; 6070 size_t ie_len; 6071 6072 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 6073 return -EINVAL; 6074 6075 wiphy = &rdev->wiphy; 6076 6077 if (!rdev->ops->scan) 6078 return -EOPNOTSUPP; 6079 6080 if (rdev->scan_req || rdev->scan_msg) { 6081 err = -EBUSY; 6082 goto unlock; 6083 } 6084 6085 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6086 n_channels = validate_scan_freqs( 6087 info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6088 if (!n_channels) { 6089 err = -EINVAL; 6090 goto unlock; 6091 } 6092 } else { 6093 n_channels = ieee80211_get_num_supported_channels(wiphy); 6094 } 6095 6096 if (info->attrs[NL80211_ATTR_SCAN_SSIDS]) 6097 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) 6098 n_ssids++; 6099 6100 if (n_ssids > wiphy->max_scan_ssids) { 6101 err = -EINVAL; 6102 goto unlock; 6103 } 6104 6105 if (info->attrs[NL80211_ATTR_IE]) 6106 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6107 else 6108 ie_len = 0; 6109 6110 if (ie_len > wiphy->max_scan_ie_len) { 6111 err = -EINVAL; 6112 goto unlock; 6113 } 6114 6115 request = kzalloc(sizeof(*request) 6116 + sizeof(*request->ssids) * n_ssids 6117 + sizeof(*request->channels) * n_channels 6118 + ie_len, GFP_KERNEL); 6119 if (!request) { 6120 err = -ENOMEM; 6121 goto unlock; 6122 } 6123 6124 if (n_ssids) 6125 request->ssids = (void *)&request->channels[n_channels]; 6126 request->n_ssids = n_ssids; 6127 if (ie_len) { 6128 if (n_ssids) 6129 request->ie = (void *)(request->ssids + n_ssids); 6130 else 6131 request->ie = (void *)(request->channels + n_channels); 6132 } 6133 6134 i = 0; 6135 if (info->attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6136 /* user specified, bail out if channel not found */ 6137 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_FREQUENCIES], tmp) { 6138 struct ieee80211_channel *chan; 6139 6140 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6141 6142 if (!chan) { 6143 err = -EINVAL; 6144 goto out_free; 6145 } 6146 6147 /* ignore disabled channels */ 6148 if (chan->flags & IEEE80211_CHAN_DISABLED) 6149 continue; 6150 6151 request->channels[i] = chan; 6152 i++; 6153 } 6154 } else { 6155 enum nl80211_band band; 6156 6157 /* all channels */ 6158 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6159 int j; 6160 6161 if (!wiphy->bands[band]) 6162 continue; 6163 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6164 struct ieee80211_channel *chan; 6165 6166 chan = &wiphy->bands[band]->channels[j]; 6167 6168 if (chan->flags & IEEE80211_CHAN_DISABLED) 6169 continue; 6170 6171 request->channels[i] = chan; 6172 i++; 6173 } 6174 } 6175 } 6176 6177 if (!i) { 6178 err = -EINVAL; 6179 goto out_free; 6180 } 6181 6182 request->n_channels = i; 6183 6184 i = 0; 6185 if (n_ssids) { 6186 nla_for_each_nested(attr, info->attrs[NL80211_ATTR_SCAN_SSIDS], tmp) { 6187 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6188 err = -EINVAL; 6189 goto out_free; 6190 } 6191 request->ssids[i].ssid_len = nla_len(attr); 6192 memcpy(request->ssids[i].ssid, nla_data(attr), nla_len(attr)); 6193 i++; 6194 } 6195 } 6196 6197 if (info->attrs[NL80211_ATTR_IE]) { 6198 request->ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 6199 memcpy((void *)request->ie, 6200 nla_data(info->attrs[NL80211_ATTR_IE]), 6201 request->ie_len); 6202 } 6203 6204 for (i = 0; i < NUM_NL80211_BANDS; i++) 6205 if (wiphy->bands[i]) 6206 request->rates[i] = 6207 (1 << wiphy->bands[i]->n_bitrates) - 1; 6208 6209 if (info->attrs[NL80211_ATTR_SCAN_SUPP_RATES]) { 6210 nla_for_each_nested(attr, 6211 info->attrs[NL80211_ATTR_SCAN_SUPP_RATES], 6212 tmp) { 6213 enum nl80211_band band = nla_type(attr); 6214 6215 if (band < 0 || band >= NUM_NL80211_BANDS) { 6216 err = -EINVAL; 6217 goto out_free; 6218 } 6219 6220 if (!wiphy->bands[band]) 6221 continue; 6222 6223 err = ieee80211_get_ratemask(wiphy->bands[band], 6224 nla_data(attr), 6225 nla_len(attr), 6226 &request->rates[band]); 6227 if (err) 6228 goto out_free; 6229 } 6230 } 6231 6232 if (info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]) { 6233 if (!wiphy_ext_feature_isset(wiphy, 6234 NL80211_EXT_FEATURE_SET_SCAN_DWELL)) { 6235 err = -EOPNOTSUPP; 6236 goto out_free; 6237 } 6238 6239 request->duration = 6240 nla_get_u16(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION]); 6241 request->duration_mandatory = 6242 nla_get_flag(info->attrs[NL80211_ATTR_MEASUREMENT_DURATION_MANDATORY]); 6243 } 6244 6245 if (info->attrs[NL80211_ATTR_SCAN_FLAGS]) { 6246 request->flags = nla_get_u32( 6247 info->attrs[NL80211_ATTR_SCAN_FLAGS]); 6248 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6249 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6250 err = -EOPNOTSUPP; 6251 goto out_free; 6252 } 6253 6254 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6255 if (!(wiphy->features & 6256 NL80211_FEATURE_SCAN_RANDOM_MAC_ADDR)) { 6257 err = -EOPNOTSUPP; 6258 goto out_free; 6259 } 6260 6261 if (wdev->current_bss) { 6262 err = -EOPNOTSUPP; 6263 goto out_free; 6264 } 6265 6266 err = nl80211_parse_random_mac(info->attrs, 6267 request->mac_addr, 6268 request->mac_addr_mask); 6269 if (err) 6270 goto out_free; 6271 } 6272 } 6273 6274 request->no_cck = 6275 nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 6276 6277 if (info->attrs[NL80211_ATTR_MAC]) 6278 memcpy(request->bssid, nla_data(info->attrs[NL80211_ATTR_MAC]), 6279 ETH_ALEN); 6280 else 6281 eth_broadcast_addr(request->bssid); 6282 6283 request->wdev = wdev; 6284 request->wiphy = &rdev->wiphy; 6285 request->scan_start = jiffies; 6286 6287 rdev->scan_req = request; 6288 err = rdev_scan(rdev, request); 6289 6290 if (!err) { 6291 nl80211_send_scan_start(rdev, wdev); 6292 if (wdev->netdev) 6293 dev_hold(wdev->netdev); 6294 } else { 6295 out_free: 6296 rdev->scan_req = NULL; 6297 kfree(request); 6298 } 6299 6300 unlock: 6301 return err; 6302 } 6303 6304 static int nl80211_abort_scan(struct sk_buff *skb, struct genl_info *info) 6305 { 6306 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6307 struct wireless_dev *wdev = info->user_ptr[1]; 6308 6309 if (!rdev->ops->abort_scan) 6310 return -EOPNOTSUPP; 6311 6312 if (rdev->scan_msg) 6313 return 0; 6314 6315 if (!rdev->scan_req) 6316 return -ENOENT; 6317 6318 rdev_abort_scan(rdev, wdev); 6319 return 0; 6320 } 6321 6322 static int 6323 nl80211_parse_sched_scan_plans(struct wiphy *wiphy, int n_plans, 6324 struct cfg80211_sched_scan_request *request, 6325 struct nlattr **attrs) 6326 { 6327 int tmp, err, i = 0; 6328 struct nlattr *attr; 6329 6330 if (!attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6331 u32 interval; 6332 6333 /* 6334 * If scan plans are not specified, 6335 * %NL80211_ATTR_SCHED_SCAN_INTERVAL must be specified. In this 6336 * case one scan plan will be set with the specified scan 6337 * interval and infinite number of iterations. 6338 */ 6339 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6340 return -EINVAL; 6341 6342 interval = nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]); 6343 if (!interval) 6344 return -EINVAL; 6345 6346 request->scan_plans[0].interval = 6347 DIV_ROUND_UP(interval, MSEC_PER_SEC); 6348 if (!request->scan_plans[0].interval) 6349 return -EINVAL; 6350 6351 if (request->scan_plans[0].interval > 6352 wiphy->max_sched_scan_plan_interval) 6353 request->scan_plans[0].interval = 6354 wiphy->max_sched_scan_plan_interval; 6355 6356 return 0; 6357 } 6358 6359 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) { 6360 struct nlattr *plan[NL80211_SCHED_SCAN_PLAN_MAX + 1]; 6361 6362 if (WARN_ON(i >= n_plans)) 6363 return -EINVAL; 6364 6365 err = nla_parse(plan, NL80211_SCHED_SCAN_PLAN_MAX, 6366 nla_data(attr), nla_len(attr), 6367 nl80211_plan_policy); 6368 if (err) 6369 return err; 6370 6371 if (!plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]) 6372 return -EINVAL; 6373 6374 request->scan_plans[i].interval = 6375 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_INTERVAL]); 6376 if (!request->scan_plans[i].interval || 6377 request->scan_plans[i].interval > 6378 wiphy->max_sched_scan_plan_interval) 6379 return -EINVAL; 6380 6381 if (plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]) { 6382 request->scan_plans[i].iterations = 6383 nla_get_u32(plan[NL80211_SCHED_SCAN_PLAN_ITERATIONS]); 6384 if (!request->scan_plans[i].iterations || 6385 (request->scan_plans[i].iterations > 6386 wiphy->max_sched_scan_plan_iterations)) 6387 return -EINVAL; 6388 } else if (i < n_plans - 1) { 6389 /* 6390 * All scan plans but the last one must specify 6391 * a finite number of iterations 6392 */ 6393 return -EINVAL; 6394 } 6395 6396 i++; 6397 } 6398 6399 /* 6400 * The last scan plan must not specify the number of 6401 * iterations, it is supposed to run infinitely 6402 */ 6403 if (request->scan_plans[n_plans - 1].iterations) 6404 return -EINVAL; 6405 6406 return 0; 6407 } 6408 6409 static struct cfg80211_sched_scan_request * 6410 nl80211_parse_sched_scan(struct wiphy *wiphy, struct wireless_dev *wdev, 6411 struct nlattr **attrs) 6412 { 6413 struct cfg80211_sched_scan_request *request; 6414 struct nlattr *attr; 6415 int err, tmp, n_ssids = 0, n_match_sets = 0, n_channels, i, n_plans = 0; 6416 enum nl80211_band band; 6417 size_t ie_len; 6418 struct nlattr *tb[NL80211_SCHED_SCAN_MATCH_ATTR_MAX + 1]; 6419 s32 default_match_rssi = NL80211_SCAN_RSSI_THOLD_OFF; 6420 6421 if (!is_valid_ie_attr(attrs[NL80211_ATTR_IE])) 6422 return ERR_PTR(-EINVAL); 6423 6424 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6425 n_channels = validate_scan_freqs( 6426 attrs[NL80211_ATTR_SCAN_FREQUENCIES]); 6427 if (!n_channels) 6428 return ERR_PTR(-EINVAL); 6429 } else { 6430 n_channels = ieee80211_get_num_supported_channels(wiphy); 6431 } 6432 6433 if (attrs[NL80211_ATTR_SCAN_SSIDS]) 6434 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6435 tmp) 6436 n_ssids++; 6437 6438 if (n_ssids > wiphy->max_sched_scan_ssids) 6439 return ERR_PTR(-EINVAL); 6440 6441 /* 6442 * First, count the number of 'real' matchsets. Due to an issue with 6443 * the old implementation, matchsets containing only the RSSI attribute 6444 * (NL80211_SCHED_SCAN_MATCH_ATTR_RSSI) are considered as the 'default' 6445 * RSSI for all matchsets, rather than their own matchset for reporting 6446 * all APs with a strong RSSI. This is needed to be compatible with 6447 * older userspace that treated a matchset with only the RSSI as the 6448 * global RSSI for all other matchsets - if there are other matchsets. 6449 */ 6450 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6451 nla_for_each_nested(attr, 6452 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6453 tmp) { 6454 struct nlattr *rssi; 6455 6456 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6457 nla_data(attr), nla_len(attr), 6458 nl80211_match_policy); 6459 if (err) 6460 return ERR_PTR(err); 6461 /* add other standalone attributes here */ 6462 if (tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]) { 6463 n_match_sets++; 6464 continue; 6465 } 6466 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6467 if (rssi) 6468 default_match_rssi = nla_get_s32(rssi); 6469 } 6470 } 6471 6472 /* However, if there's no other matchset, add the RSSI one */ 6473 if (!n_match_sets && default_match_rssi != NL80211_SCAN_RSSI_THOLD_OFF) 6474 n_match_sets = 1; 6475 6476 if (n_match_sets > wiphy->max_match_sets) 6477 return ERR_PTR(-EINVAL); 6478 6479 if (attrs[NL80211_ATTR_IE]) 6480 ie_len = nla_len(attrs[NL80211_ATTR_IE]); 6481 else 6482 ie_len = 0; 6483 6484 if (ie_len > wiphy->max_sched_scan_ie_len) 6485 return ERR_PTR(-EINVAL); 6486 6487 if (attrs[NL80211_ATTR_SCHED_SCAN_PLANS]) { 6488 /* 6489 * NL80211_ATTR_SCHED_SCAN_INTERVAL must not be specified since 6490 * each scan plan already specifies its own interval 6491 */ 6492 if (attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6493 return ERR_PTR(-EINVAL); 6494 6495 nla_for_each_nested(attr, 6496 attrs[NL80211_ATTR_SCHED_SCAN_PLANS], tmp) 6497 n_plans++; 6498 } else { 6499 /* 6500 * The scan interval attribute is kept for backward 6501 * compatibility. If no scan plans are specified and sched scan 6502 * interval is specified, one scan plan will be set with this 6503 * scan interval and infinite number of iterations. 6504 */ 6505 if (!attrs[NL80211_ATTR_SCHED_SCAN_INTERVAL]) 6506 return ERR_PTR(-EINVAL); 6507 6508 n_plans = 1; 6509 } 6510 6511 if (!n_plans || n_plans > wiphy->max_sched_scan_plans) 6512 return ERR_PTR(-EINVAL); 6513 6514 request = kzalloc(sizeof(*request) 6515 + sizeof(*request->ssids) * n_ssids 6516 + sizeof(*request->match_sets) * n_match_sets 6517 + sizeof(*request->scan_plans) * n_plans 6518 + sizeof(*request->channels) * n_channels 6519 + ie_len, GFP_KERNEL); 6520 if (!request) 6521 return ERR_PTR(-ENOMEM); 6522 6523 if (n_ssids) 6524 request->ssids = (void *)&request->channels[n_channels]; 6525 request->n_ssids = n_ssids; 6526 if (ie_len) { 6527 if (n_ssids) 6528 request->ie = (void *)(request->ssids + n_ssids); 6529 else 6530 request->ie = (void *)(request->channels + n_channels); 6531 } 6532 6533 if (n_match_sets) { 6534 if (request->ie) 6535 request->match_sets = (void *)(request->ie + ie_len); 6536 else if (n_ssids) 6537 request->match_sets = 6538 (void *)(request->ssids + n_ssids); 6539 else 6540 request->match_sets = 6541 (void *)(request->channels + n_channels); 6542 } 6543 request->n_match_sets = n_match_sets; 6544 6545 if (n_match_sets) 6546 request->scan_plans = (void *)(request->match_sets + 6547 n_match_sets); 6548 else if (request->ie) 6549 request->scan_plans = (void *)(request->ie + ie_len); 6550 else if (n_ssids) 6551 request->scan_plans = (void *)(request->ssids + n_ssids); 6552 else 6553 request->scan_plans = (void *)(request->channels + n_channels); 6554 6555 request->n_scan_plans = n_plans; 6556 6557 i = 0; 6558 if (attrs[NL80211_ATTR_SCAN_FREQUENCIES]) { 6559 /* user specified, bail out if channel not found */ 6560 nla_for_each_nested(attr, 6561 attrs[NL80211_ATTR_SCAN_FREQUENCIES], 6562 tmp) { 6563 struct ieee80211_channel *chan; 6564 6565 chan = ieee80211_get_channel(wiphy, nla_get_u32(attr)); 6566 6567 if (!chan) { 6568 err = -EINVAL; 6569 goto out_free; 6570 } 6571 6572 /* ignore disabled channels */ 6573 if (chan->flags & IEEE80211_CHAN_DISABLED) 6574 continue; 6575 6576 request->channels[i] = chan; 6577 i++; 6578 } 6579 } else { 6580 /* all channels */ 6581 for (band = 0; band < NUM_NL80211_BANDS; band++) { 6582 int j; 6583 6584 if (!wiphy->bands[band]) 6585 continue; 6586 for (j = 0; j < wiphy->bands[band]->n_channels; j++) { 6587 struct ieee80211_channel *chan; 6588 6589 chan = &wiphy->bands[band]->channels[j]; 6590 6591 if (chan->flags & IEEE80211_CHAN_DISABLED) 6592 continue; 6593 6594 request->channels[i] = chan; 6595 i++; 6596 } 6597 } 6598 } 6599 6600 if (!i) { 6601 err = -EINVAL; 6602 goto out_free; 6603 } 6604 6605 request->n_channels = i; 6606 6607 i = 0; 6608 if (n_ssids) { 6609 nla_for_each_nested(attr, attrs[NL80211_ATTR_SCAN_SSIDS], 6610 tmp) { 6611 if (nla_len(attr) > IEEE80211_MAX_SSID_LEN) { 6612 err = -EINVAL; 6613 goto out_free; 6614 } 6615 request->ssids[i].ssid_len = nla_len(attr); 6616 memcpy(request->ssids[i].ssid, nla_data(attr), 6617 nla_len(attr)); 6618 i++; 6619 } 6620 } 6621 6622 i = 0; 6623 if (attrs[NL80211_ATTR_SCHED_SCAN_MATCH]) { 6624 nla_for_each_nested(attr, 6625 attrs[NL80211_ATTR_SCHED_SCAN_MATCH], 6626 tmp) { 6627 struct nlattr *ssid, *rssi; 6628 6629 err = nla_parse(tb, NL80211_SCHED_SCAN_MATCH_ATTR_MAX, 6630 nla_data(attr), nla_len(attr), 6631 nl80211_match_policy); 6632 if (err) 6633 goto out_free; 6634 ssid = tb[NL80211_SCHED_SCAN_MATCH_ATTR_SSID]; 6635 if (ssid) { 6636 if (WARN_ON(i >= n_match_sets)) { 6637 /* this indicates a programming error, 6638 * the loop above should have verified 6639 * things properly 6640 */ 6641 err = -EINVAL; 6642 goto out_free; 6643 } 6644 6645 if (nla_len(ssid) > IEEE80211_MAX_SSID_LEN) { 6646 err = -EINVAL; 6647 goto out_free; 6648 } 6649 memcpy(request->match_sets[i].ssid.ssid, 6650 nla_data(ssid), nla_len(ssid)); 6651 request->match_sets[i].ssid.ssid_len = 6652 nla_len(ssid); 6653 /* special attribute - old implementation w/a */ 6654 request->match_sets[i].rssi_thold = 6655 default_match_rssi; 6656 rssi = tb[NL80211_SCHED_SCAN_MATCH_ATTR_RSSI]; 6657 if (rssi) 6658 request->match_sets[i].rssi_thold = 6659 nla_get_s32(rssi); 6660 } 6661 i++; 6662 } 6663 6664 /* there was no other matchset, so the RSSI one is alone */ 6665 if (i == 0 && n_match_sets) 6666 request->match_sets[0].rssi_thold = default_match_rssi; 6667 6668 request->min_rssi_thold = INT_MAX; 6669 for (i = 0; i < n_match_sets; i++) 6670 request->min_rssi_thold = 6671 min(request->match_sets[i].rssi_thold, 6672 request->min_rssi_thold); 6673 } else { 6674 request->min_rssi_thold = NL80211_SCAN_RSSI_THOLD_OFF; 6675 } 6676 6677 if (ie_len) { 6678 request->ie_len = ie_len; 6679 memcpy((void *)request->ie, 6680 nla_data(attrs[NL80211_ATTR_IE]), 6681 request->ie_len); 6682 } 6683 6684 if (attrs[NL80211_ATTR_SCAN_FLAGS]) { 6685 request->flags = nla_get_u32( 6686 attrs[NL80211_ATTR_SCAN_FLAGS]); 6687 if ((request->flags & NL80211_SCAN_FLAG_LOW_PRIORITY) && 6688 !(wiphy->features & NL80211_FEATURE_LOW_PRIORITY_SCAN)) { 6689 err = -EOPNOTSUPP; 6690 goto out_free; 6691 } 6692 6693 if (request->flags & NL80211_SCAN_FLAG_RANDOM_ADDR) { 6694 u32 flg = NL80211_FEATURE_SCHED_SCAN_RANDOM_MAC_ADDR; 6695 6696 if (!wdev) /* must be net-detect */ 6697 flg = NL80211_FEATURE_ND_RANDOM_MAC_ADDR; 6698 6699 if (!(wiphy->features & flg)) { 6700 err = -EOPNOTSUPP; 6701 goto out_free; 6702 } 6703 6704 if (wdev && wdev->current_bss) { 6705 err = -EOPNOTSUPP; 6706 goto out_free; 6707 } 6708 6709 err = nl80211_parse_random_mac(attrs, request->mac_addr, 6710 request->mac_addr_mask); 6711 if (err) 6712 goto out_free; 6713 } 6714 } 6715 6716 if (attrs[NL80211_ATTR_SCHED_SCAN_DELAY]) 6717 request->delay = 6718 nla_get_u32(attrs[NL80211_ATTR_SCHED_SCAN_DELAY]); 6719 6720 err = nl80211_parse_sched_scan_plans(wiphy, n_plans, request, attrs); 6721 if (err) 6722 goto out_free; 6723 6724 request->scan_start = jiffies; 6725 6726 return request; 6727 6728 out_free: 6729 kfree(request); 6730 return ERR_PTR(err); 6731 } 6732 6733 static int nl80211_start_sched_scan(struct sk_buff *skb, 6734 struct genl_info *info) 6735 { 6736 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6737 struct net_device *dev = info->user_ptr[1]; 6738 struct wireless_dev *wdev = dev->ieee80211_ptr; 6739 struct cfg80211_sched_scan_request *sched_scan_req; 6740 int err; 6741 6742 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6743 !rdev->ops->sched_scan_start) 6744 return -EOPNOTSUPP; 6745 6746 if (rdev->sched_scan_req) 6747 return -EINPROGRESS; 6748 6749 sched_scan_req = nl80211_parse_sched_scan(&rdev->wiphy, wdev, 6750 info->attrs); 6751 6752 err = PTR_ERR_OR_ZERO(sched_scan_req); 6753 if (err) 6754 goto out_err; 6755 6756 err = rdev_sched_scan_start(rdev, dev, sched_scan_req); 6757 if (err) 6758 goto out_free; 6759 6760 sched_scan_req->dev = dev; 6761 sched_scan_req->wiphy = &rdev->wiphy; 6762 6763 if (info->attrs[NL80211_ATTR_SOCKET_OWNER]) 6764 sched_scan_req->owner_nlportid = info->snd_portid; 6765 6766 rcu_assign_pointer(rdev->sched_scan_req, sched_scan_req); 6767 6768 nl80211_send_sched_scan(rdev, dev, 6769 NL80211_CMD_START_SCHED_SCAN); 6770 return 0; 6771 6772 out_free: 6773 kfree(sched_scan_req); 6774 out_err: 6775 return err; 6776 } 6777 6778 static int nl80211_stop_sched_scan(struct sk_buff *skb, 6779 struct genl_info *info) 6780 { 6781 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6782 6783 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) || 6784 !rdev->ops->sched_scan_stop) 6785 return -EOPNOTSUPP; 6786 6787 return __cfg80211_stop_sched_scan(rdev, false); 6788 } 6789 6790 static int nl80211_start_radar_detection(struct sk_buff *skb, 6791 struct genl_info *info) 6792 { 6793 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6794 struct net_device *dev = info->user_ptr[1]; 6795 struct wireless_dev *wdev = dev->ieee80211_ptr; 6796 struct cfg80211_chan_def chandef; 6797 enum nl80211_dfs_regions dfs_region; 6798 unsigned int cac_time_ms; 6799 int err; 6800 6801 dfs_region = reg_get_dfs_region(wdev->wiphy); 6802 if (dfs_region == NL80211_DFS_UNSET) 6803 return -EINVAL; 6804 6805 err = nl80211_parse_chandef(rdev, info, &chandef); 6806 if (err) 6807 return err; 6808 6809 if (netif_carrier_ok(dev)) 6810 return -EBUSY; 6811 6812 if (wdev->cac_started) 6813 return -EBUSY; 6814 6815 err = cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, 6816 wdev->iftype); 6817 if (err < 0) 6818 return err; 6819 6820 if (err == 0) 6821 return -EINVAL; 6822 6823 if (!cfg80211_chandef_dfs_usable(wdev->wiphy, &chandef)) 6824 return -EINVAL; 6825 6826 if (!rdev->ops->start_radar_detection) 6827 return -EOPNOTSUPP; 6828 6829 cac_time_ms = cfg80211_chandef_dfs_cac_time(&rdev->wiphy, &chandef); 6830 if (WARN_ON(!cac_time_ms)) 6831 cac_time_ms = IEEE80211_DFS_MIN_CAC_TIME_MS; 6832 6833 err = rdev_start_radar_detection(rdev, dev, &chandef, cac_time_ms); 6834 if (!err) { 6835 wdev->chandef = chandef; 6836 wdev->cac_started = true; 6837 wdev->cac_start_time = jiffies; 6838 wdev->cac_time_ms = cac_time_ms; 6839 } 6840 return err; 6841 } 6842 6843 static int nl80211_channel_switch(struct sk_buff *skb, struct genl_info *info) 6844 { 6845 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 6846 struct net_device *dev = info->user_ptr[1]; 6847 struct wireless_dev *wdev = dev->ieee80211_ptr; 6848 struct cfg80211_csa_settings params; 6849 /* csa_attrs is defined static to avoid waste of stack size - this 6850 * function is called under RTNL lock, so this should not be a problem. 6851 */ 6852 static struct nlattr *csa_attrs[NL80211_ATTR_MAX+1]; 6853 int err; 6854 bool need_new_beacon = false; 6855 int len, i; 6856 u32 cs_count; 6857 6858 if (!rdev->ops->channel_switch || 6859 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_CHANNEL_SWITCH)) 6860 return -EOPNOTSUPP; 6861 6862 switch (dev->ieee80211_ptr->iftype) { 6863 case NL80211_IFTYPE_AP: 6864 case NL80211_IFTYPE_P2P_GO: 6865 need_new_beacon = true; 6866 6867 /* useless if AP is not running */ 6868 if (!wdev->beacon_interval) 6869 return -ENOTCONN; 6870 break; 6871 case NL80211_IFTYPE_ADHOC: 6872 if (!wdev->ssid_len) 6873 return -ENOTCONN; 6874 break; 6875 case NL80211_IFTYPE_MESH_POINT: 6876 if (!wdev->mesh_id_len) 6877 return -ENOTCONN; 6878 break; 6879 default: 6880 return -EOPNOTSUPP; 6881 } 6882 6883 memset(¶ms, 0, sizeof(params)); 6884 6885 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 6886 !info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]) 6887 return -EINVAL; 6888 6889 /* only important for AP, IBSS and mesh create IEs internally */ 6890 if (need_new_beacon && !info->attrs[NL80211_ATTR_CSA_IES]) 6891 return -EINVAL; 6892 6893 /* Even though the attribute is u32, the specification says 6894 * u8, so let's make sure we don't overflow. 6895 */ 6896 cs_count = nla_get_u32(info->attrs[NL80211_ATTR_CH_SWITCH_COUNT]); 6897 if (cs_count > 255) 6898 return -EINVAL; 6899 6900 params.count = cs_count; 6901 6902 if (!need_new_beacon) 6903 goto skip_beacons; 6904 6905 err = nl80211_parse_beacon(info->attrs, ¶ms.beacon_after); 6906 if (err) 6907 return err; 6908 6909 err = nla_parse_nested(csa_attrs, NL80211_ATTR_MAX, 6910 info->attrs[NL80211_ATTR_CSA_IES], 6911 nl80211_policy); 6912 if (err) 6913 return err; 6914 6915 err = nl80211_parse_beacon(csa_attrs, ¶ms.beacon_csa); 6916 if (err) 6917 return err; 6918 6919 if (!csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]) 6920 return -EINVAL; 6921 6922 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6923 if (!len || (len % sizeof(u16))) 6924 return -EINVAL; 6925 6926 params.n_counter_offsets_beacon = len / sizeof(u16); 6927 if (rdev->wiphy.max_num_csa_counters && 6928 (params.n_counter_offsets_beacon > 6929 rdev->wiphy.max_num_csa_counters)) 6930 return -EINVAL; 6931 6932 params.counter_offsets_beacon = 6933 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_BEACON]); 6934 6935 /* sanity checks - counters should fit and be the same */ 6936 for (i = 0; i < params.n_counter_offsets_beacon; i++) { 6937 u16 offset = params.counter_offsets_beacon[i]; 6938 6939 if (offset >= params.beacon_csa.tail_len) 6940 return -EINVAL; 6941 6942 if (params.beacon_csa.tail[offset] != params.count) 6943 return -EINVAL; 6944 } 6945 6946 if (csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]) { 6947 len = nla_len(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6948 if (!len || (len % sizeof(u16))) 6949 return -EINVAL; 6950 6951 params.n_counter_offsets_presp = len / sizeof(u16); 6952 if (rdev->wiphy.max_num_csa_counters && 6953 (params.n_counter_offsets_beacon > 6954 rdev->wiphy.max_num_csa_counters)) 6955 return -EINVAL; 6956 6957 params.counter_offsets_presp = 6958 nla_data(csa_attrs[NL80211_ATTR_CSA_C_OFF_PRESP]); 6959 6960 /* sanity checks - counters should fit and be the same */ 6961 for (i = 0; i < params.n_counter_offsets_presp; i++) { 6962 u16 offset = params.counter_offsets_presp[i]; 6963 6964 if (offset >= params.beacon_csa.probe_resp_len) 6965 return -EINVAL; 6966 6967 if (params.beacon_csa.probe_resp[offset] != 6968 params.count) 6969 return -EINVAL; 6970 } 6971 } 6972 6973 skip_beacons: 6974 err = nl80211_parse_chandef(rdev, info, ¶ms.chandef); 6975 if (err) 6976 return err; 6977 6978 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, ¶ms.chandef, 6979 wdev->iftype)) 6980 return -EINVAL; 6981 6982 err = cfg80211_chandef_dfs_required(wdev->wiphy, 6983 ¶ms.chandef, 6984 wdev->iftype); 6985 if (err < 0) 6986 return err; 6987 6988 if (err > 0) 6989 params.radar_required = true; 6990 6991 if (info->attrs[NL80211_ATTR_CH_SWITCH_BLOCK_TX]) 6992 params.block_tx = true; 6993 6994 wdev_lock(wdev); 6995 err = rdev_channel_switch(rdev, dev, ¶ms); 6996 wdev_unlock(wdev); 6997 6998 return err; 6999 } 7000 7001 static int nl80211_send_bss(struct sk_buff *msg, struct netlink_callback *cb, 7002 u32 seq, int flags, 7003 struct cfg80211_registered_device *rdev, 7004 struct wireless_dev *wdev, 7005 struct cfg80211_internal_bss *intbss) 7006 { 7007 struct cfg80211_bss *res = &intbss->pub; 7008 const struct cfg80211_bss_ies *ies; 7009 void *hdr; 7010 struct nlattr *bss; 7011 7012 ASSERT_WDEV_LOCK(wdev); 7013 7014 hdr = nl80211hdr_put(msg, NETLINK_CB(cb->skb).portid, seq, flags, 7015 NL80211_CMD_NEW_SCAN_RESULTS); 7016 if (!hdr) 7017 return -1; 7018 7019 genl_dump_check_consistent(cb, hdr, &nl80211_fam); 7020 7021 if (nla_put_u32(msg, NL80211_ATTR_GENERATION, rdev->bss_generation)) 7022 goto nla_put_failure; 7023 if (wdev->netdev && 7024 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex)) 7025 goto nla_put_failure; 7026 if (nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 7027 NL80211_ATTR_PAD)) 7028 goto nla_put_failure; 7029 7030 bss = nla_nest_start(msg, NL80211_ATTR_BSS); 7031 if (!bss) 7032 goto nla_put_failure; 7033 if ((!is_zero_ether_addr(res->bssid) && 7034 nla_put(msg, NL80211_BSS_BSSID, ETH_ALEN, res->bssid))) 7035 goto nla_put_failure; 7036 7037 rcu_read_lock(); 7038 /* indicate whether we have probe response data or not */ 7039 if (rcu_access_pointer(res->proberesp_ies) && 7040 nla_put_flag(msg, NL80211_BSS_PRESP_DATA)) 7041 goto fail_unlock_rcu; 7042 7043 /* this pointer prefers to be pointed to probe response data 7044 * but is always valid 7045 */ 7046 ies = rcu_dereference(res->ies); 7047 if (ies) { 7048 if (nla_put_u64_64bit(msg, NL80211_BSS_TSF, ies->tsf, 7049 NL80211_BSS_PAD)) 7050 goto fail_unlock_rcu; 7051 if (ies->len && nla_put(msg, NL80211_BSS_INFORMATION_ELEMENTS, 7052 ies->len, ies->data)) 7053 goto fail_unlock_rcu; 7054 } 7055 7056 /* and this pointer is always (unless driver didn't know) beacon data */ 7057 ies = rcu_dereference(res->beacon_ies); 7058 if (ies && ies->from_beacon) { 7059 if (nla_put_u64_64bit(msg, NL80211_BSS_BEACON_TSF, ies->tsf, 7060 NL80211_BSS_PAD)) 7061 goto fail_unlock_rcu; 7062 if (ies->len && nla_put(msg, NL80211_BSS_BEACON_IES, 7063 ies->len, ies->data)) 7064 goto fail_unlock_rcu; 7065 } 7066 rcu_read_unlock(); 7067 7068 if (res->beacon_interval && 7069 nla_put_u16(msg, NL80211_BSS_BEACON_INTERVAL, res->beacon_interval)) 7070 goto nla_put_failure; 7071 if (nla_put_u16(msg, NL80211_BSS_CAPABILITY, res->capability) || 7072 nla_put_u32(msg, NL80211_BSS_FREQUENCY, res->channel->center_freq) || 7073 nla_put_u32(msg, NL80211_BSS_CHAN_WIDTH, res->scan_width) || 7074 nla_put_u32(msg, NL80211_BSS_SEEN_MS_AGO, 7075 jiffies_to_msecs(jiffies - intbss->ts))) 7076 goto nla_put_failure; 7077 7078 if (intbss->parent_tsf && 7079 (nla_put_u64_64bit(msg, NL80211_BSS_PARENT_TSF, 7080 intbss->parent_tsf, NL80211_BSS_PAD) || 7081 nla_put(msg, NL80211_BSS_PARENT_BSSID, ETH_ALEN, 7082 intbss->parent_bssid))) 7083 goto nla_put_failure; 7084 7085 if (intbss->ts_boottime && 7086 nla_put_u64_64bit(msg, NL80211_BSS_LAST_SEEN_BOOTTIME, 7087 intbss->ts_boottime, NL80211_BSS_PAD)) 7088 goto nla_put_failure; 7089 7090 switch (rdev->wiphy.signal_type) { 7091 case CFG80211_SIGNAL_TYPE_MBM: 7092 if (nla_put_u32(msg, NL80211_BSS_SIGNAL_MBM, res->signal)) 7093 goto nla_put_failure; 7094 break; 7095 case CFG80211_SIGNAL_TYPE_UNSPEC: 7096 if (nla_put_u8(msg, NL80211_BSS_SIGNAL_UNSPEC, res->signal)) 7097 goto nla_put_failure; 7098 break; 7099 default: 7100 break; 7101 } 7102 7103 switch (wdev->iftype) { 7104 case NL80211_IFTYPE_P2P_CLIENT: 7105 case NL80211_IFTYPE_STATION: 7106 if (intbss == wdev->current_bss && 7107 nla_put_u32(msg, NL80211_BSS_STATUS, 7108 NL80211_BSS_STATUS_ASSOCIATED)) 7109 goto nla_put_failure; 7110 break; 7111 case NL80211_IFTYPE_ADHOC: 7112 if (intbss == wdev->current_bss && 7113 nla_put_u32(msg, NL80211_BSS_STATUS, 7114 NL80211_BSS_STATUS_IBSS_JOINED)) 7115 goto nla_put_failure; 7116 break; 7117 default: 7118 break; 7119 } 7120 7121 nla_nest_end(msg, bss); 7122 7123 genlmsg_end(msg, hdr); 7124 return 0; 7125 7126 fail_unlock_rcu: 7127 rcu_read_unlock(); 7128 nla_put_failure: 7129 genlmsg_cancel(msg, hdr); 7130 return -EMSGSIZE; 7131 } 7132 7133 static int nl80211_dump_scan(struct sk_buff *skb, struct netlink_callback *cb) 7134 { 7135 struct cfg80211_registered_device *rdev; 7136 struct cfg80211_internal_bss *scan; 7137 struct wireless_dev *wdev; 7138 int start = cb->args[2], idx = 0; 7139 int err; 7140 7141 err = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7142 if (err) 7143 return err; 7144 7145 wdev_lock(wdev); 7146 spin_lock_bh(&rdev->bss_lock); 7147 cfg80211_bss_expire(rdev); 7148 7149 cb->seq = rdev->bss_generation; 7150 7151 list_for_each_entry(scan, &rdev->bss_list, list) { 7152 if (++idx <= start) 7153 continue; 7154 if (nl80211_send_bss(skb, cb, 7155 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7156 rdev, wdev, scan) < 0) { 7157 idx--; 7158 break; 7159 } 7160 } 7161 7162 spin_unlock_bh(&rdev->bss_lock); 7163 wdev_unlock(wdev); 7164 7165 cb->args[2] = idx; 7166 nl80211_finish_wdev_dump(rdev); 7167 7168 return skb->len; 7169 } 7170 7171 static int nl80211_send_survey(struct sk_buff *msg, u32 portid, u32 seq, 7172 int flags, struct net_device *dev, 7173 bool allow_radio_stats, 7174 struct survey_info *survey) 7175 { 7176 void *hdr; 7177 struct nlattr *infoattr; 7178 7179 /* skip radio stats if userspace didn't request them */ 7180 if (!survey->channel && !allow_radio_stats) 7181 return 0; 7182 7183 hdr = nl80211hdr_put(msg, portid, seq, flags, 7184 NL80211_CMD_NEW_SURVEY_RESULTS); 7185 if (!hdr) 7186 return -ENOMEM; 7187 7188 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 7189 goto nla_put_failure; 7190 7191 infoattr = nla_nest_start(msg, NL80211_ATTR_SURVEY_INFO); 7192 if (!infoattr) 7193 goto nla_put_failure; 7194 7195 if (survey->channel && 7196 nla_put_u32(msg, NL80211_SURVEY_INFO_FREQUENCY, 7197 survey->channel->center_freq)) 7198 goto nla_put_failure; 7199 7200 if ((survey->filled & SURVEY_INFO_NOISE_DBM) && 7201 nla_put_u8(msg, NL80211_SURVEY_INFO_NOISE, survey->noise)) 7202 goto nla_put_failure; 7203 if ((survey->filled & SURVEY_INFO_IN_USE) && 7204 nla_put_flag(msg, NL80211_SURVEY_INFO_IN_USE)) 7205 goto nla_put_failure; 7206 if ((survey->filled & SURVEY_INFO_TIME) && 7207 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME, 7208 survey->time, NL80211_SURVEY_INFO_PAD)) 7209 goto nla_put_failure; 7210 if ((survey->filled & SURVEY_INFO_TIME_BUSY) && 7211 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_BUSY, 7212 survey->time_busy, NL80211_SURVEY_INFO_PAD)) 7213 goto nla_put_failure; 7214 if ((survey->filled & SURVEY_INFO_TIME_EXT_BUSY) && 7215 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_EXT_BUSY, 7216 survey->time_ext_busy, NL80211_SURVEY_INFO_PAD)) 7217 goto nla_put_failure; 7218 if ((survey->filled & SURVEY_INFO_TIME_RX) && 7219 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_RX, 7220 survey->time_rx, NL80211_SURVEY_INFO_PAD)) 7221 goto nla_put_failure; 7222 if ((survey->filled & SURVEY_INFO_TIME_TX) && 7223 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_TX, 7224 survey->time_tx, NL80211_SURVEY_INFO_PAD)) 7225 goto nla_put_failure; 7226 if ((survey->filled & SURVEY_INFO_TIME_SCAN) && 7227 nla_put_u64_64bit(msg, NL80211_SURVEY_INFO_TIME_SCAN, 7228 survey->time_scan, NL80211_SURVEY_INFO_PAD)) 7229 goto nla_put_failure; 7230 7231 nla_nest_end(msg, infoattr); 7232 7233 genlmsg_end(msg, hdr); 7234 return 0; 7235 7236 nla_put_failure: 7237 genlmsg_cancel(msg, hdr); 7238 return -EMSGSIZE; 7239 } 7240 7241 static int nl80211_dump_survey(struct sk_buff *skb, struct netlink_callback *cb) 7242 { 7243 struct survey_info survey; 7244 struct cfg80211_registered_device *rdev; 7245 struct wireless_dev *wdev; 7246 int survey_idx = cb->args[2]; 7247 int res; 7248 bool radio_stats; 7249 7250 res = nl80211_prepare_wdev_dump(skb, cb, &rdev, &wdev); 7251 if (res) 7252 return res; 7253 7254 /* prepare_wdev_dump parsed the attributes */ 7255 radio_stats = nl80211_fam.attrbuf[NL80211_ATTR_SURVEY_RADIO_STATS]; 7256 7257 if (!wdev->netdev) { 7258 res = -EINVAL; 7259 goto out_err; 7260 } 7261 7262 if (!rdev->ops->dump_survey) { 7263 res = -EOPNOTSUPP; 7264 goto out_err; 7265 } 7266 7267 while (1) { 7268 res = rdev_dump_survey(rdev, wdev->netdev, survey_idx, &survey); 7269 if (res == -ENOENT) 7270 break; 7271 if (res) 7272 goto out_err; 7273 7274 /* don't send disabled channels, but do send non-channel data */ 7275 if (survey.channel && 7276 survey.channel->flags & IEEE80211_CHAN_DISABLED) { 7277 survey_idx++; 7278 continue; 7279 } 7280 7281 if (nl80211_send_survey(skb, 7282 NETLINK_CB(cb->skb).portid, 7283 cb->nlh->nlmsg_seq, NLM_F_MULTI, 7284 wdev->netdev, radio_stats, &survey) < 0) 7285 goto out; 7286 survey_idx++; 7287 } 7288 7289 out: 7290 cb->args[2] = survey_idx; 7291 res = skb->len; 7292 out_err: 7293 nl80211_finish_wdev_dump(rdev); 7294 return res; 7295 } 7296 7297 static bool nl80211_valid_wpa_versions(u32 wpa_versions) 7298 { 7299 return !(wpa_versions & ~(NL80211_WPA_VERSION_1 | 7300 NL80211_WPA_VERSION_2)); 7301 } 7302 7303 static int nl80211_authenticate(struct sk_buff *skb, struct genl_info *info) 7304 { 7305 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7306 struct net_device *dev = info->user_ptr[1]; 7307 struct ieee80211_channel *chan; 7308 const u8 *bssid, *ssid, *ie = NULL, *sae_data = NULL; 7309 int err, ssid_len, ie_len = 0, sae_data_len = 0; 7310 enum nl80211_auth_type auth_type; 7311 struct key_parse key; 7312 bool local_state_change; 7313 7314 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7315 return -EINVAL; 7316 7317 if (!info->attrs[NL80211_ATTR_MAC]) 7318 return -EINVAL; 7319 7320 if (!info->attrs[NL80211_ATTR_AUTH_TYPE]) 7321 return -EINVAL; 7322 7323 if (!info->attrs[NL80211_ATTR_SSID]) 7324 return -EINVAL; 7325 7326 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7327 return -EINVAL; 7328 7329 err = nl80211_parse_key(info, &key); 7330 if (err) 7331 return err; 7332 7333 if (key.idx >= 0) { 7334 if (key.type != -1 && key.type != NL80211_KEYTYPE_GROUP) 7335 return -EINVAL; 7336 if (!key.p.key || !key.p.key_len) 7337 return -EINVAL; 7338 if ((key.p.cipher != WLAN_CIPHER_SUITE_WEP40 || 7339 key.p.key_len != WLAN_KEY_LEN_WEP40) && 7340 (key.p.cipher != WLAN_CIPHER_SUITE_WEP104 || 7341 key.p.key_len != WLAN_KEY_LEN_WEP104)) 7342 return -EINVAL; 7343 if (key.idx > 4) 7344 return -EINVAL; 7345 } else { 7346 key.p.key_len = 0; 7347 key.p.key = NULL; 7348 } 7349 7350 if (key.idx >= 0) { 7351 int i; 7352 bool ok = false; 7353 7354 for (i = 0; i < rdev->wiphy.n_cipher_suites; i++) { 7355 if (key.p.cipher == rdev->wiphy.cipher_suites[i]) { 7356 ok = true; 7357 break; 7358 } 7359 } 7360 if (!ok) 7361 return -EINVAL; 7362 } 7363 7364 if (!rdev->ops->auth) 7365 return -EOPNOTSUPP; 7366 7367 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7368 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7369 return -EOPNOTSUPP; 7370 7371 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7372 chan = nl80211_get_valid_chan(&rdev->wiphy, 7373 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7374 if (!chan) 7375 return -EINVAL; 7376 7377 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7378 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7379 7380 if (info->attrs[NL80211_ATTR_IE]) { 7381 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7382 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7383 } 7384 7385 auth_type = nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 7386 if (!nl80211_valid_auth_type(rdev, auth_type, NL80211_CMD_AUTHENTICATE)) 7387 return -EINVAL; 7388 7389 if (auth_type == NL80211_AUTHTYPE_SAE && 7390 !info->attrs[NL80211_ATTR_SAE_DATA]) 7391 return -EINVAL; 7392 7393 if (info->attrs[NL80211_ATTR_SAE_DATA]) { 7394 if (auth_type != NL80211_AUTHTYPE_SAE) 7395 return -EINVAL; 7396 sae_data = nla_data(info->attrs[NL80211_ATTR_SAE_DATA]); 7397 sae_data_len = nla_len(info->attrs[NL80211_ATTR_SAE_DATA]); 7398 /* need to include at least Auth Transaction and Status Code */ 7399 if (sae_data_len < 4) 7400 return -EINVAL; 7401 } 7402 7403 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7404 7405 /* 7406 * Since we no longer track auth state, ignore 7407 * requests to only change local state. 7408 */ 7409 if (local_state_change) 7410 return 0; 7411 7412 wdev_lock(dev->ieee80211_ptr); 7413 err = cfg80211_mlme_auth(rdev, dev, chan, auth_type, bssid, 7414 ssid, ssid_len, ie, ie_len, 7415 key.p.key, key.p.key_len, key.idx, 7416 sae_data, sae_data_len); 7417 wdev_unlock(dev->ieee80211_ptr); 7418 return err; 7419 } 7420 7421 static int nl80211_crypto_settings(struct cfg80211_registered_device *rdev, 7422 struct genl_info *info, 7423 struct cfg80211_crypto_settings *settings, 7424 int cipher_limit) 7425 { 7426 memset(settings, 0, sizeof(*settings)); 7427 7428 settings->control_port = info->attrs[NL80211_ATTR_CONTROL_PORT]; 7429 7430 if (info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]) { 7431 u16 proto; 7432 7433 proto = nla_get_u16( 7434 info->attrs[NL80211_ATTR_CONTROL_PORT_ETHERTYPE]); 7435 settings->control_port_ethertype = cpu_to_be16(proto); 7436 if (!(rdev->wiphy.flags & WIPHY_FLAG_CONTROL_PORT_PROTOCOL) && 7437 proto != ETH_P_PAE) 7438 return -EINVAL; 7439 if (info->attrs[NL80211_ATTR_CONTROL_PORT_NO_ENCRYPT]) 7440 settings->control_port_no_encrypt = true; 7441 } else 7442 settings->control_port_ethertype = cpu_to_be16(ETH_P_PAE); 7443 7444 if (info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]) { 7445 void *data; 7446 int len, i; 7447 7448 data = nla_data(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7449 len = nla_len(info->attrs[NL80211_ATTR_CIPHER_SUITES_PAIRWISE]); 7450 settings->n_ciphers_pairwise = len / sizeof(u32); 7451 7452 if (len % sizeof(u32)) 7453 return -EINVAL; 7454 7455 if (settings->n_ciphers_pairwise > cipher_limit) 7456 return -EINVAL; 7457 7458 memcpy(settings->ciphers_pairwise, data, len); 7459 7460 for (i = 0; i < settings->n_ciphers_pairwise; i++) 7461 if (!cfg80211_supported_cipher_suite( 7462 &rdev->wiphy, 7463 settings->ciphers_pairwise[i])) 7464 return -EINVAL; 7465 } 7466 7467 if (info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]) { 7468 settings->cipher_group = 7469 nla_get_u32(info->attrs[NL80211_ATTR_CIPHER_SUITE_GROUP]); 7470 if (!cfg80211_supported_cipher_suite(&rdev->wiphy, 7471 settings->cipher_group)) 7472 return -EINVAL; 7473 } 7474 7475 if (info->attrs[NL80211_ATTR_WPA_VERSIONS]) { 7476 settings->wpa_versions = 7477 nla_get_u32(info->attrs[NL80211_ATTR_WPA_VERSIONS]); 7478 if (!nl80211_valid_wpa_versions(settings->wpa_versions)) 7479 return -EINVAL; 7480 } 7481 7482 if (info->attrs[NL80211_ATTR_AKM_SUITES]) { 7483 void *data; 7484 int len; 7485 7486 data = nla_data(info->attrs[NL80211_ATTR_AKM_SUITES]); 7487 len = nla_len(info->attrs[NL80211_ATTR_AKM_SUITES]); 7488 settings->n_akm_suites = len / sizeof(u32); 7489 7490 if (len % sizeof(u32)) 7491 return -EINVAL; 7492 7493 if (settings->n_akm_suites > NL80211_MAX_NR_AKM_SUITES) 7494 return -EINVAL; 7495 7496 memcpy(settings->akm_suites, data, len); 7497 } 7498 7499 return 0; 7500 } 7501 7502 static int nl80211_associate(struct sk_buff *skb, struct genl_info *info) 7503 { 7504 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7505 struct net_device *dev = info->user_ptr[1]; 7506 struct ieee80211_channel *chan; 7507 struct cfg80211_assoc_request req = {}; 7508 const u8 *bssid, *ssid; 7509 int err, ssid_len = 0; 7510 7511 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7512 return -EINVAL; 7513 7514 if (!info->attrs[NL80211_ATTR_MAC] || 7515 !info->attrs[NL80211_ATTR_SSID] || 7516 !info->attrs[NL80211_ATTR_WIPHY_FREQ]) 7517 return -EINVAL; 7518 7519 if (!rdev->ops->assoc) 7520 return -EOPNOTSUPP; 7521 7522 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7523 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7524 return -EOPNOTSUPP; 7525 7526 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7527 7528 chan = nl80211_get_valid_chan(&rdev->wiphy, 7529 info->attrs[NL80211_ATTR_WIPHY_FREQ]); 7530 if (!chan) 7531 return -EINVAL; 7532 7533 ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7534 ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7535 7536 if (info->attrs[NL80211_ATTR_IE]) { 7537 req.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7538 req.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7539 } 7540 7541 if (info->attrs[NL80211_ATTR_USE_MFP]) { 7542 enum nl80211_mfp mfp = 7543 nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 7544 if (mfp == NL80211_MFP_REQUIRED) 7545 req.use_mfp = true; 7546 else if (mfp != NL80211_MFP_NO) 7547 return -EINVAL; 7548 } 7549 7550 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 7551 req.prev_bssid = nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 7552 7553 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 7554 req.flags |= ASSOC_REQ_DISABLE_HT; 7555 7556 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7557 memcpy(&req.ht_capa_mask, 7558 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7559 sizeof(req.ht_capa_mask)); 7560 7561 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7562 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7563 return -EINVAL; 7564 memcpy(&req.ht_capa, 7565 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7566 sizeof(req.ht_capa)); 7567 } 7568 7569 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 7570 req.flags |= ASSOC_REQ_DISABLE_VHT; 7571 7572 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7573 memcpy(&req.vht_capa_mask, 7574 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 7575 sizeof(req.vht_capa_mask)); 7576 7577 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 7578 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 7579 return -EINVAL; 7580 memcpy(&req.vht_capa, 7581 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 7582 sizeof(req.vht_capa)); 7583 } 7584 7585 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 7586 if (!((rdev->wiphy.features & 7587 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 7588 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 7589 !wiphy_ext_feature_isset(&rdev->wiphy, 7590 NL80211_EXT_FEATURE_RRM)) 7591 return -EINVAL; 7592 req.flags |= ASSOC_REQ_USE_RRM; 7593 } 7594 7595 err = nl80211_crypto_settings(rdev, info, &req.crypto, 1); 7596 if (!err) { 7597 wdev_lock(dev->ieee80211_ptr); 7598 err = cfg80211_mlme_assoc(rdev, dev, chan, bssid, 7599 ssid, ssid_len, &req); 7600 wdev_unlock(dev->ieee80211_ptr); 7601 } 7602 7603 return err; 7604 } 7605 7606 static int nl80211_deauthenticate(struct sk_buff *skb, struct genl_info *info) 7607 { 7608 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7609 struct net_device *dev = info->user_ptr[1]; 7610 const u8 *ie = NULL, *bssid; 7611 int ie_len = 0, err; 7612 u16 reason_code; 7613 bool local_state_change; 7614 7615 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7616 return -EINVAL; 7617 7618 if (!info->attrs[NL80211_ATTR_MAC]) 7619 return -EINVAL; 7620 7621 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7622 return -EINVAL; 7623 7624 if (!rdev->ops->deauth) 7625 return -EOPNOTSUPP; 7626 7627 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7628 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7629 return -EOPNOTSUPP; 7630 7631 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7632 7633 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7634 if (reason_code == 0) { 7635 /* Reason Code 0 is reserved */ 7636 return -EINVAL; 7637 } 7638 7639 if (info->attrs[NL80211_ATTR_IE]) { 7640 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7641 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7642 } 7643 7644 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7645 7646 wdev_lock(dev->ieee80211_ptr); 7647 err = cfg80211_mlme_deauth(rdev, dev, bssid, ie, ie_len, reason_code, 7648 local_state_change); 7649 wdev_unlock(dev->ieee80211_ptr); 7650 return err; 7651 } 7652 7653 static int nl80211_disassociate(struct sk_buff *skb, struct genl_info *info) 7654 { 7655 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7656 struct net_device *dev = info->user_ptr[1]; 7657 const u8 *ie = NULL, *bssid; 7658 int ie_len = 0, err; 7659 u16 reason_code; 7660 bool local_state_change; 7661 7662 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7663 return -EINVAL; 7664 7665 if (!info->attrs[NL80211_ATTR_MAC]) 7666 return -EINVAL; 7667 7668 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 7669 return -EINVAL; 7670 7671 if (!rdev->ops->disassoc) 7672 return -EOPNOTSUPP; 7673 7674 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 7675 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 7676 return -EOPNOTSUPP; 7677 7678 bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7679 7680 reason_code = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 7681 if (reason_code == 0) { 7682 /* Reason Code 0 is reserved */ 7683 return -EINVAL; 7684 } 7685 7686 if (info->attrs[NL80211_ATTR_IE]) { 7687 ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7688 ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7689 } 7690 7691 local_state_change = !!info->attrs[NL80211_ATTR_LOCAL_STATE_CHANGE]; 7692 7693 wdev_lock(dev->ieee80211_ptr); 7694 err = cfg80211_mlme_disassoc(rdev, dev, bssid, ie, ie_len, reason_code, 7695 local_state_change); 7696 wdev_unlock(dev->ieee80211_ptr); 7697 return err; 7698 } 7699 7700 static bool 7701 nl80211_parse_mcast_rate(struct cfg80211_registered_device *rdev, 7702 int mcast_rate[NUM_NL80211_BANDS], 7703 int rateval) 7704 { 7705 struct wiphy *wiphy = &rdev->wiphy; 7706 bool found = false; 7707 int band, i; 7708 7709 for (band = 0; band < NUM_NL80211_BANDS; band++) { 7710 struct ieee80211_supported_band *sband; 7711 7712 sband = wiphy->bands[band]; 7713 if (!sband) 7714 continue; 7715 7716 for (i = 0; i < sband->n_bitrates; i++) { 7717 if (sband->bitrates[i].bitrate == rateval) { 7718 mcast_rate[band] = i + 1; 7719 found = true; 7720 break; 7721 } 7722 } 7723 } 7724 7725 return found; 7726 } 7727 7728 static int nl80211_join_ibss(struct sk_buff *skb, struct genl_info *info) 7729 { 7730 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7731 struct net_device *dev = info->user_ptr[1]; 7732 struct cfg80211_ibss_params ibss; 7733 struct wiphy *wiphy; 7734 struct cfg80211_cached_keys *connkeys = NULL; 7735 int err; 7736 7737 memset(&ibss, 0, sizeof(ibss)); 7738 7739 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 7740 return -EINVAL; 7741 7742 if (!info->attrs[NL80211_ATTR_SSID] || 7743 !nla_len(info->attrs[NL80211_ATTR_SSID])) 7744 return -EINVAL; 7745 7746 ibss.beacon_interval = 100; 7747 7748 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 7749 ibss.beacon_interval = 7750 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 7751 if (ibss.beacon_interval < 1 || ibss.beacon_interval > 10000) 7752 return -EINVAL; 7753 } 7754 7755 if (!rdev->ops->join_ibss) 7756 return -EOPNOTSUPP; 7757 7758 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7759 return -EOPNOTSUPP; 7760 7761 wiphy = &rdev->wiphy; 7762 7763 if (info->attrs[NL80211_ATTR_MAC]) { 7764 ibss.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 7765 7766 if (!is_valid_ether_addr(ibss.bssid)) 7767 return -EINVAL; 7768 } 7769 ibss.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 7770 ibss.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 7771 7772 if (info->attrs[NL80211_ATTR_IE]) { 7773 ibss.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 7774 ibss.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 7775 } 7776 7777 err = nl80211_parse_chandef(rdev, info, &ibss.chandef); 7778 if (err) 7779 return err; 7780 7781 if (!cfg80211_reg_can_beacon(&rdev->wiphy, &ibss.chandef, 7782 NL80211_IFTYPE_ADHOC)) 7783 return -EINVAL; 7784 7785 switch (ibss.chandef.width) { 7786 case NL80211_CHAN_WIDTH_5: 7787 case NL80211_CHAN_WIDTH_10: 7788 case NL80211_CHAN_WIDTH_20_NOHT: 7789 break; 7790 case NL80211_CHAN_WIDTH_20: 7791 case NL80211_CHAN_WIDTH_40: 7792 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7793 return -EINVAL; 7794 break; 7795 case NL80211_CHAN_WIDTH_80: 7796 case NL80211_CHAN_WIDTH_80P80: 7797 case NL80211_CHAN_WIDTH_160: 7798 if (!(rdev->wiphy.features & NL80211_FEATURE_HT_IBSS)) 7799 return -EINVAL; 7800 if (!wiphy_ext_feature_isset(&rdev->wiphy, 7801 NL80211_EXT_FEATURE_VHT_IBSS)) 7802 return -EINVAL; 7803 break; 7804 default: 7805 return -EINVAL; 7806 } 7807 7808 ibss.channel_fixed = !!info->attrs[NL80211_ATTR_FREQ_FIXED]; 7809 ibss.privacy = !!info->attrs[NL80211_ATTR_PRIVACY]; 7810 7811 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 7812 u8 *rates = 7813 nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7814 int n_rates = 7815 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 7816 struct ieee80211_supported_band *sband = 7817 wiphy->bands[ibss.chandef.chan->band]; 7818 7819 err = ieee80211_get_ratemask(sband, rates, n_rates, 7820 &ibss.basic_rates); 7821 if (err) 7822 return err; 7823 } 7824 7825 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7826 memcpy(&ibss.ht_capa_mask, 7827 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 7828 sizeof(ibss.ht_capa_mask)); 7829 7830 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 7831 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 7832 return -EINVAL; 7833 memcpy(&ibss.ht_capa, 7834 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 7835 sizeof(ibss.ht_capa)); 7836 } 7837 7838 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 7839 !nl80211_parse_mcast_rate(rdev, ibss.mcast_rate, 7840 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 7841 return -EINVAL; 7842 7843 if (ibss.privacy && info->attrs[NL80211_ATTR_KEYS]) { 7844 bool no_ht = false; 7845 7846 connkeys = nl80211_parse_connkeys(rdev, 7847 info->attrs[NL80211_ATTR_KEYS], 7848 &no_ht); 7849 if (IS_ERR(connkeys)) 7850 return PTR_ERR(connkeys); 7851 7852 if ((ibss.chandef.width != NL80211_CHAN_WIDTH_20_NOHT) && 7853 no_ht) { 7854 kzfree(connkeys); 7855 return -EINVAL; 7856 } 7857 } 7858 7859 ibss.control_port = 7860 nla_get_flag(info->attrs[NL80211_ATTR_CONTROL_PORT]); 7861 7862 ibss.userspace_handles_dfs = 7863 nla_get_flag(info->attrs[NL80211_ATTR_HANDLE_DFS]); 7864 7865 err = cfg80211_join_ibss(rdev, dev, &ibss, connkeys); 7866 if (err) 7867 kzfree(connkeys); 7868 return err; 7869 } 7870 7871 static int nl80211_leave_ibss(struct sk_buff *skb, struct genl_info *info) 7872 { 7873 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7874 struct net_device *dev = info->user_ptr[1]; 7875 7876 if (!rdev->ops->leave_ibss) 7877 return -EOPNOTSUPP; 7878 7879 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC) 7880 return -EOPNOTSUPP; 7881 7882 return cfg80211_leave_ibss(rdev, dev, false); 7883 } 7884 7885 static int nl80211_set_mcast_rate(struct sk_buff *skb, struct genl_info *info) 7886 { 7887 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 7888 struct net_device *dev = info->user_ptr[1]; 7889 int mcast_rate[NUM_NL80211_BANDS]; 7890 u32 nla_rate; 7891 int err; 7892 7893 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_ADHOC && 7894 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_MESH_POINT && 7895 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_OCB) 7896 return -EOPNOTSUPP; 7897 7898 if (!rdev->ops->set_mcast_rate) 7899 return -EOPNOTSUPP; 7900 7901 memset(mcast_rate, 0, sizeof(mcast_rate)); 7902 7903 if (!info->attrs[NL80211_ATTR_MCAST_RATE]) 7904 return -EINVAL; 7905 7906 nla_rate = nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]); 7907 if (!nl80211_parse_mcast_rate(rdev, mcast_rate, nla_rate)) 7908 return -EINVAL; 7909 7910 err = rdev_set_mcast_rate(rdev, dev, mcast_rate); 7911 7912 return err; 7913 } 7914 7915 static struct sk_buff * 7916 __cfg80211_alloc_vendor_skb(struct cfg80211_registered_device *rdev, 7917 struct wireless_dev *wdev, int approxlen, 7918 u32 portid, u32 seq, enum nl80211_commands cmd, 7919 enum nl80211_attrs attr, 7920 const struct nl80211_vendor_cmd_info *info, 7921 gfp_t gfp) 7922 { 7923 struct sk_buff *skb; 7924 void *hdr; 7925 struct nlattr *data; 7926 7927 skb = nlmsg_new(approxlen + 100, gfp); 7928 if (!skb) 7929 return NULL; 7930 7931 hdr = nl80211hdr_put(skb, portid, seq, 0, cmd); 7932 if (!hdr) { 7933 kfree_skb(skb); 7934 return NULL; 7935 } 7936 7937 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 7938 goto nla_put_failure; 7939 7940 if (info) { 7941 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_ID, 7942 info->vendor_id)) 7943 goto nla_put_failure; 7944 if (nla_put_u32(skb, NL80211_ATTR_VENDOR_SUBCMD, 7945 info->subcmd)) 7946 goto nla_put_failure; 7947 } 7948 7949 if (wdev) { 7950 if (nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 7951 wdev_id(wdev), NL80211_ATTR_PAD)) 7952 goto nla_put_failure; 7953 if (wdev->netdev && 7954 nla_put_u32(skb, NL80211_ATTR_IFINDEX, 7955 wdev->netdev->ifindex)) 7956 goto nla_put_failure; 7957 } 7958 7959 data = nla_nest_start(skb, attr); 7960 7961 ((void **)skb->cb)[0] = rdev; 7962 ((void **)skb->cb)[1] = hdr; 7963 ((void **)skb->cb)[2] = data; 7964 7965 return skb; 7966 7967 nla_put_failure: 7968 kfree_skb(skb); 7969 return NULL; 7970 } 7971 7972 struct sk_buff *__cfg80211_alloc_event_skb(struct wiphy *wiphy, 7973 struct wireless_dev *wdev, 7974 enum nl80211_commands cmd, 7975 enum nl80211_attrs attr, 7976 int vendor_event_idx, 7977 int approxlen, gfp_t gfp) 7978 { 7979 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 7980 const struct nl80211_vendor_cmd_info *info; 7981 7982 switch (cmd) { 7983 case NL80211_CMD_TESTMODE: 7984 if (WARN_ON(vendor_event_idx != -1)) 7985 return NULL; 7986 info = NULL; 7987 break; 7988 case NL80211_CMD_VENDOR: 7989 if (WARN_ON(vendor_event_idx < 0 || 7990 vendor_event_idx >= wiphy->n_vendor_events)) 7991 return NULL; 7992 info = &wiphy->vendor_events[vendor_event_idx]; 7993 break; 7994 default: 7995 WARN_ON(1); 7996 return NULL; 7997 } 7998 7999 return __cfg80211_alloc_vendor_skb(rdev, wdev, approxlen, 0, 0, 8000 cmd, attr, info, gfp); 8001 } 8002 EXPORT_SYMBOL(__cfg80211_alloc_event_skb); 8003 8004 void __cfg80211_send_event_skb(struct sk_buff *skb, gfp_t gfp) 8005 { 8006 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 8007 void *hdr = ((void **)skb->cb)[1]; 8008 struct nlattr *data = ((void **)skb->cb)[2]; 8009 enum nl80211_multicast_groups mcgrp = NL80211_MCGRP_TESTMODE; 8010 8011 /* clear CB data for netlink core to own from now on */ 8012 memset(skb->cb, 0, sizeof(skb->cb)); 8013 8014 nla_nest_end(skb, data); 8015 genlmsg_end(skb, hdr); 8016 8017 if (data->nla_type == NL80211_ATTR_VENDOR_DATA) 8018 mcgrp = NL80211_MCGRP_VENDOR; 8019 8020 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), skb, 0, 8021 mcgrp, gfp); 8022 } 8023 EXPORT_SYMBOL(__cfg80211_send_event_skb); 8024 8025 #ifdef CONFIG_NL80211_TESTMODE 8026 static int nl80211_testmode_do(struct sk_buff *skb, struct genl_info *info) 8027 { 8028 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8029 struct wireless_dev *wdev = 8030 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 8031 int err; 8032 8033 if (!rdev->ops->testmode_cmd) 8034 return -EOPNOTSUPP; 8035 8036 if (IS_ERR(wdev)) { 8037 err = PTR_ERR(wdev); 8038 if (err != -EINVAL) 8039 return err; 8040 wdev = NULL; 8041 } else if (wdev->wiphy != &rdev->wiphy) { 8042 return -EINVAL; 8043 } 8044 8045 if (!info->attrs[NL80211_ATTR_TESTDATA]) 8046 return -EINVAL; 8047 8048 rdev->cur_cmd_info = info; 8049 err = rdev_testmode_cmd(rdev, wdev, 8050 nla_data(info->attrs[NL80211_ATTR_TESTDATA]), 8051 nla_len(info->attrs[NL80211_ATTR_TESTDATA])); 8052 rdev->cur_cmd_info = NULL; 8053 8054 return err; 8055 } 8056 8057 static int nl80211_testmode_dump(struct sk_buff *skb, 8058 struct netlink_callback *cb) 8059 { 8060 struct cfg80211_registered_device *rdev; 8061 int err; 8062 long phy_idx; 8063 void *data = NULL; 8064 int data_len = 0; 8065 8066 rtnl_lock(); 8067 8068 if (cb->args[0]) { 8069 /* 8070 * 0 is a valid index, but not valid for args[0], 8071 * so we need to offset by 1. 8072 */ 8073 phy_idx = cb->args[0] - 1; 8074 } else { 8075 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 8076 nl80211_fam.attrbuf, nl80211_fam.maxattr, 8077 nl80211_policy); 8078 if (err) 8079 goto out_err; 8080 8081 rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 8082 nl80211_fam.attrbuf); 8083 if (IS_ERR(rdev)) { 8084 err = PTR_ERR(rdev); 8085 goto out_err; 8086 } 8087 phy_idx = rdev->wiphy_idx; 8088 rdev = NULL; 8089 8090 if (nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]) 8091 cb->args[1] = 8092 (long)nl80211_fam.attrbuf[NL80211_ATTR_TESTDATA]; 8093 } 8094 8095 if (cb->args[1]) { 8096 data = nla_data((void *)cb->args[1]); 8097 data_len = nla_len((void *)cb->args[1]); 8098 } 8099 8100 rdev = cfg80211_rdev_by_wiphy_idx(phy_idx); 8101 if (!rdev) { 8102 err = -ENOENT; 8103 goto out_err; 8104 } 8105 8106 if (!rdev->ops->testmode_dump) { 8107 err = -EOPNOTSUPP; 8108 goto out_err; 8109 } 8110 8111 while (1) { 8112 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 8113 cb->nlh->nlmsg_seq, NLM_F_MULTI, 8114 NL80211_CMD_TESTMODE); 8115 struct nlattr *tmdata; 8116 8117 if (!hdr) 8118 break; 8119 8120 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, phy_idx)) { 8121 genlmsg_cancel(skb, hdr); 8122 break; 8123 } 8124 8125 tmdata = nla_nest_start(skb, NL80211_ATTR_TESTDATA); 8126 if (!tmdata) { 8127 genlmsg_cancel(skb, hdr); 8128 break; 8129 } 8130 err = rdev_testmode_dump(rdev, skb, cb, data, data_len); 8131 nla_nest_end(skb, tmdata); 8132 8133 if (err == -ENOBUFS || err == -ENOENT) { 8134 genlmsg_cancel(skb, hdr); 8135 break; 8136 } else if (err) { 8137 genlmsg_cancel(skb, hdr); 8138 goto out_err; 8139 } 8140 8141 genlmsg_end(skb, hdr); 8142 } 8143 8144 err = skb->len; 8145 /* see above */ 8146 cb->args[0] = phy_idx + 1; 8147 out_err: 8148 rtnl_unlock(); 8149 return err; 8150 } 8151 #endif 8152 8153 static int nl80211_connect(struct sk_buff *skb, struct genl_info *info) 8154 { 8155 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8156 struct net_device *dev = info->user_ptr[1]; 8157 struct cfg80211_connect_params connect; 8158 struct wiphy *wiphy; 8159 struct cfg80211_cached_keys *connkeys = NULL; 8160 int err; 8161 8162 memset(&connect, 0, sizeof(connect)); 8163 8164 if (!is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 8165 return -EINVAL; 8166 8167 if (!info->attrs[NL80211_ATTR_SSID] || 8168 !nla_len(info->attrs[NL80211_ATTR_SSID])) 8169 return -EINVAL; 8170 8171 if (info->attrs[NL80211_ATTR_AUTH_TYPE]) { 8172 connect.auth_type = 8173 nla_get_u32(info->attrs[NL80211_ATTR_AUTH_TYPE]); 8174 if (!nl80211_valid_auth_type(rdev, connect.auth_type, 8175 NL80211_CMD_CONNECT)) 8176 return -EINVAL; 8177 } else 8178 connect.auth_type = NL80211_AUTHTYPE_AUTOMATIC; 8179 8180 connect.privacy = info->attrs[NL80211_ATTR_PRIVACY]; 8181 8182 err = nl80211_crypto_settings(rdev, info, &connect.crypto, 8183 NL80211_MAX_NR_CIPHER_SUITES); 8184 if (err) 8185 return err; 8186 8187 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8188 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8189 return -EOPNOTSUPP; 8190 8191 wiphy = &rdev->wiphy; 8192 8193 connect.bg_scan_period = -1; 8194 if (info->attrs[NL80211_ATTR_BG_SCAN_PERIOD] && 8195 (wiphy->flags & WIPHY_FLAG_SUPPORTS_FW_ROAM)) { 8196 connect.bg_scan_period = 8197 nla_get_u16(info->attrs[NL80211_ATTR_BG_SCAN_PERIOD]); 8198 } 8199 8200 if (info->attrs[NL80211_ATTR_MAC]) 8201 connect.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8202 else if (info->attrs[NL80211_ATTR_MAC_HINT]) 8203 connect.bssid_hint = 8204 nla_data(info->attrs[NL80211_ATTR_MAC_HINT]); 8205 connect.ssid = nla_data(info->attrs[NL80211_ATTR_SSID]); 8206 connect.ssid_len = nla_len(info->attrs[NL80211_ATTR_SSID]); 8207 8208 if (info->attrs[NL80211_ATTR_IE]) { 8209 connect.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 8210 connect.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 8211 } 8212 8213 if (info->attrs[NL80211_ATTR_USE_MFP]) { 8214 connect.mfp = nla_get_u32(info->attrs[NL80211_ATTR_USE_MFP]); 8215 if (connect.mfp != NL80211_MFP_REQUIRED && 8216 connect.mfp != NL80211_MFP_NO) 8217 return -EINVAL; 8218 } else { 8219 connect.mfp = NL80211_MFP_NO; 8220 } 8221 8222 if (info->attrs[NL80211_ATTR_PREV_BSSID]) 8223 connect.prev_bssid = 8224 nla_data(info->attrs[NL80211_ATTR_PREV_BSSID]); 8225 8226 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8227 connect.channel = nl80211_get_valid_chan( 8228 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ]); 8229 if (!connect.channel) 8230 return -EINVAL; 8231 } else if (info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]) { 8232 connect.channel_hint = nl80211_get_valid_chan( 8233 wiphy, info->attrs[NL80211_ATTR_WIPHY_FREQ_HINT]); 8234 if (!connect.channel_hint) 8235 return -EINVAL; 8236 } 8237 8238 if (connect.privacy && info->attrs[NL80211_ATTR_KEYS]) { 8239 connkeys = nl80211_parse_connkeys(rdev, 8240 info->attrs[NL80211_ATTR_KEYS], NULL); 8241 if (IS_ERR(connkeys)) 8242 return PTR_ERR(connkeys); 8243 } 8244 8245 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_HT])) 8246 connect.flags |= ASSOC_REQ_DISABLE_HT; 8247 8248 if (info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) 8249 memcpy(&connect.ht_capa_mask, 8250 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]), 8251 sizeof(connect.ht_capa_mask)); 8252 8253 if (info->attrs[NL80211_ATTR_HT_CAPABILITY]) { 8254 if (!info->attrs[NL80211_ATTR_HT_CAPABILITY_MASK]) { 8255 kzfree(connkeys); 8256 return -EINVAL; 8257 } 8258 memcpy(&connect.ht_capa, 8259 nla_data(info->attrs[NL80211_ATTR_HT_CAPABILITY]), 8260 sizeof(connect.ht_capa)); 8261 } 8262 8263 if (nla_get_flag(info->attrs[NL80211_ATTR_DISABLE_VHT])) 8264 connect.flags |= ASSOC_REQ_DISABLE_VHT; 8265 8266 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) 8267 memcpy(&connect.vht_capa_mask, 8268 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]), 8269 sizeof(connect.vht_capa_mask)); 8270 8271 if (info->attrs[NL80211_ATTR_VHT_CAPABILITY]) { 8272 if (!info->attrs[NL80211_ATTR_VHT_CAPABILITY_MASK]) { 8273 kzfree(connkeys); 8274 return -EINVAL; 8275 } 8276 memcpy(&connect.vht_capa, 8277 nla_data(info->attrs[NL80211_ATTR_VHT_CAPABILITY]), 8278 sizeof(connect.vht_capa)); 8279 } 8280 8281 if (nla_get_flag(info->attrs[NL80211_ATTR_USE_RRM])) { 8282 if (!((rdev->wiphy.features & 8283 NL80211_FEATURE_DS_PARAM_SET_IE_IN_PROBES) && 8284 (rdev->wiphy.features & NL80211_FEATURE_QUIET)) && 8285 !wiphy_ext_feature_isset(&rdev->wiphy, 8286 NL80211_EXT_FEATURE_RRM)) { 8287 kzfree(connkeys); 8288 return -EINVAL; 8289 } 8290 connect.flags |= ASSOC_REQ_USE_RRM; 8291 } 8292 8293 connect.pbss = nla_get_flag(info->attrs[NL80211_ATTR_PBSS]); 8294 if (connect.pbss && !rdev->wiphy.bands[NL80211_BAND_60GHZ]) { 8295 kzfree(connkeys); 8296 return -EOPNOTSUPP; 8297 } 8298 8299 if (info->attrs[NL80211_ATTR_BSS_SELECT]) { 8300 /* bss selection makes no sense if bssid is set */ 8301 if (connect.bssid) { 8302 kzfree(connkeys); 8303 return -EINVAL; 8304 } 8305 8306 err = parse_bss_select(info->attrs[NL80211_ATTR_BSS_SELECT], 8307 wiphy, &connect.bss_select); 8308 if (err) { 8309 kzfree(connkeys); 8310 return err; 8311 } 8312 } 8313 8314 wdev_lock(dev->ieee80211_ptr); 8315 err = cfg80211_connect(rdev, dev, &connect, connkeys, 8316 connect.prev_bssid); 8317 wdev_unlock(dev->ieee80211_ptr); 8318 if (err) 8319 kzfree(connkeys); 8320 return err; 8321 } 8322 8323 static int nl80211_disconnect(struct sk_buff *skb, struct genl_info *info) 8324 { 8325 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8326 struct net_device *dev = info->user_ptr[1]; 8327 u16 reason; 8328 int ret; 8329 8330 if (!info->attrs[NL80211_ATTR_REASON_CODE]) 8331 reason = WLAN_REASON_DEAUTH_LEAVING; 8332 else 8333 reason = nla_get_u16(info->attrs[NL80211_ATTR_REASON_CODE]); 8334 8335 if (reason == 0) 8336 return -EINVAL; 8337 8338 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8339 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8340 return -EOPNOTSUPP; 8341 8342 wdev_lock(dev->ieee80211_ptr); 8343 ret = cfg80211_disconnect(rdev, dev, reason, true); 8344 wdev_unlock(dev->ieee80211_ptr); 8345 return ret; 8346 } 8347 8348 static int nl80211_wiphy_netns(struct sk_buff *skb, struct genl_info *info) 8349 { 8350 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8351 struct net *net; 8352 int err; 8353 8354 if (info->attrs[NL80211_ATTR_PID]) { 8355 u32 pid = nla_get_u32(info->attrs[NL80211_ATTR_PID]); 8356 8357 net = get_net_ns_by_pid(pid); 8358 } else if (info->attrs[NL80211_ATTR_NETNS_FD]) { 8359 u32 fd = nla_get_u32(info->attrs[NL80211_ATTR_NETNS_FD]); 8360 8361 net = get_net_ns_by_fd(fd); 8362 } else { 8363 return -EINVAL; 8364 } 8365 8366 if (IS_ERR(net)) 8367 return PTR_ERR(net); 8368 8369 err = 0; 8370 8371 /* check if anything to do */ 8372 if (!net_eq(wiphy_net(&rdev->wiphy), net)) 8373 err = cfg80211_switch_netns(rdev, net); 8374 8375 put_net(net); 8376 return err; 8377 } 8378 8379 static int nl80211_setdel_pmksa(struct sk_buff *skb, struct genl_info *info) 8380 { 8381 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8382 int (*rdev_ops)(struct wiphy *wiphy, struct net_device *dev, 8383 struct cfg80211_pmksa *pmksa) = NULL; 8384 struct net_device *dev = info->user_ptr[1]; 8385 struct cfg80211_pmksa pmksa; 8386 8387 memset(&pmksa, 0, sizeof(struct cfg80211_pmksa)); 8388 8389 if (!info->attrs[NL80211_ATTR_MAC]) 8390 return -EINVAL; 8391 8392 if (!info->attrs[NL80211_ATTR_PMKID]) 8393 return -EINVAL; 8394 8395 pmksa.pmkid = nla_data(info->attrs[NL80211_ATTR_PMKID]); 8396 pmksa.bssid = nla_data(info->attrs[NL80211_ATTR_MAC]); 8397 8398 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8399 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8400 return -EOPNOTSUPP; 8401 8402 switch (info->genlhdr->cmd) { 8403 case NL80211_CMD_SET_PMKSA: 8404 rdev_ops = rdev->ops->set_pmksa; 8405 break; 8406 case NL80211_CMD_DEL_PMKSA: 8407 rdev_ops = rdev->ops->del_pmksa; 8408 break; 8409 default: 8410 WARN_ON(1); 8411 break; 8412 } 8413 8414 if (!rdev_ops) 8415 return -EOPNOTSUPP; 8416 8417 return rdev_ops(&rdev->wiphy, dev, &pmksa); 8418 } 8419 8420 static int nl80211_flush_pmksa(struct sk_buff *skb, struct genl_info *info) 8421 { 8422 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8423 struct net_device *dev = info->user_ptr[1]; 8424 8425 if (dev->ieee80211_ptr->iftype != NL80211_IFTYPE_STATION && 8426 dev->ieee80211_ptr->iftype != NL80211_IFTYPE_P2P_CLIENT) 8427 return -EOPNOTSUPP; 8428 8429 if (!rdev->ops->flush_pmksa) 8430 return -EOPNOTSUPP; 8431 8432 return rdev_flush_pmksa(rdev, dev); 8433 } 8434 8435 static int nl80211_tdls_mgmt(struct sk_buff *skb, struct genl_info *info) 8436 { 8437 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8438 struct net_device *dev = info->user_ptr[1]; 8439 u8 action_code, dialog_token; 8440 u32 peer_capability = 0; 8441 u16 status_code; 8442 u8 *peer; 8443 bool initiator; 8444 8445 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8446 !rdev->ops->tdls_mgmt) 8447 return -EOPNOTSUPP; 8448 8449 if (!info->attrs[NL80211_ATTR_TDLS_ACTION] || 8450 !info->attrs[NL80211_ATTR_STATUS_CODE] || 8451 !info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN] || 8452 !info->attrs[NL80211_ATTR_IE] || 8453 !info->attrs[NL80211_ATTR_MAC]) 8454 return -EINVAL; 8455 8456 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8457 action_code = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_ACTION]); 8458 status_code = nla_get_u16(info->attrs[NL80211_ATTR_STATUS_CODE]); 8459 dialog_token = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_DIALOG_TOKEN]); 8460 initiator = nla_get_flag(info->attrs[NL80211_ATTR_TDLS_INITIATOR]); 8461 if (info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]) 8462 peer_capability = 8463 nla_get_u32(info->attrs[NL80211_ATTR_TDLS_PEER_CAPABILITY]); 8464 8465 return rdev_tdls_mgmt(rdev, dev, peer, action_code, 8466 dialog_token, status_code, peer_capability, 8467 initiator, 8468 nla_data(info->attrs[NL80211_ATTR_IE]), 8469 nla_len(info->attrs[NL80211_ATTR_IE])); 8470 } 8471 8472 static int nl80211_tdls_oper(struct sk_buff *skb, struct genl_info *info) 8473 { 8474 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8475 struct net_device *dev = info->user_ptr[1]; 8476 enum nl80211_tdls_operation operation; 8477 u8 *peer; 8478 8479 if (!(rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_TDLS) || 8480 !rdev->ops->tdls_oper) 8481 return -EOPNOTSUPP; 8482 8483 if (!info->attrs[NL80211_ATTR_TDLS_OPERATION] || 8484 !info->attrs[NL80211_ATTR_MAC]) 8485 return -EINVAL; 8486 8487 operation = nla_get_u8(info->attrs[NL80211_ATTR_TDLS_OPERATION]); 8488 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 8489 8490 return rdev_tdls_oper(rdev, dev, peer, operation); 8491 } 8492 8493 static int nl80211_remain_on_channel(struct sk_buff *skb, 8494 struct genl_info *info) 8495 { 8496 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8497 struct wireless_dev *wdev = info->user_ptr[1]; 8498 struct cfg80211_chan_def chandef; 8499 struct sk_buff *msg; 8500 void *hdr; 8501 u64 cookie; 8502 u32 duration; 8503 int err; 8504 8505 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ] || 8506 !info->attrs[NL80211_ATTR_DURATION]) 8507 return -EINVAL; 8508 8509 duration = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8510 8511 if (!rdev->ops->remain_on_channel || 8512 !(rdev->wiphy.flags & WIPHY_FLAG_HAS_REMAIN_ON_CHANNEL)) 8513 return -EOPNOTSUPP; 8514 8515 /* 8516 * We should be on that channel for at least a minimum amount of 8517 * time (10ms) but no longer than the driver supports. 8518 */ 8519 if (duration < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8520 duration > rdev->wiphy.max_remain_on_channel_duration) 8521 return -EINVAL; 8522 8523 err = nl80211_parse_chandef(rdev, info, &chandef); 8524 if (err) 8525 return err; 8526 8527 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8528 if (!msg) 8529 return -ENOMEM; 8530 8531 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8532 NL80211_CMD_REMAIN_ON_CHANNEL); 8533 if (!hdr) { 8534 err = -ENOBUFS; 8535 goto free_msg; 8536 } 8537 8538 err = rdev_remain_on_channel(rdev, wdev, chandef.chan, 8539 duration, &cookie); 8540 8541 if (err) 8542 goto free_msg; 8543 8544 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 8545 NL80211_ATTR_PAD)) 8546 goto nla_put_failure; 8547 8548 genlmsg_end(msg, hdr); 8549 8550 return genlmsg_reply(msg, info); 8551 8552 nla_put_failure: 8553 err = -ENOBUFS; 8554 free_msg: 8555 nlmsg_free(msg); 8556 return err; 8557 } 8558 8559 static int nl80211_cancel_remain_on_channel(struct sk_buff *skb, 8560 struct genl_info *info) 8561 { 8562 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8563 struct wireless_dev *wdev = info->user_ptr[1]; 8564 u64 cookie; 8565 8566 if (!info->attrs[NL80211_ATTR_COOKIE]) 8567 return -EINVAL; 8568 8569 if (!rdev->ops->cancel_remain_on_channel) 8570 return -EOPNOTSUPP; 8571 8572 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 8573 8574 return rdev_cancel_remain_on_channel(rdev, wdev, cookie); 8575 } 8576 8577 static u32 rateset_to_mask(struct ieee80211_supported_band *sband, 8578 u8 *rates, u8 rates_len) 8579 { 8580 u8 i; 8581 u32 mask = 0; 8582 8583 for (i = 0; i < rates_len; i++) { 8584 int rate = (rates[i] & 0x7f) * 5; 8585 int ridx; 8586 8587 for (ridx = 0; ridx < sband->n_bitrates; ridx++) { 8588 struct ieee80211_rate *srate = 8589 &sband->bitrates[ridx]; 8590 if (rate == srate->bitrate) { 8591 mask |= 1 << ridx; 8592 break; 8593 } 8594 } 8595 if (ridx == sband->n_bitrates) 8596 return 0; /* rate not found */ 8597 } 8598 8599 return mask; 8600 } 8601 8602 static bool ht_rateset_to_mask(struct ieee80211_supported_band *sband, 8603 u8 *rates, u8 rates_len, 8604 u8 mcs[IEEE80211_HT_MCS_MASK_LEN]) 8605 { 8606 u8 i; 8607 8608 memset(mcs, 0, IEEE80211_HT_MCS_MASK_LEN); 8609 8610 for (i = 0; i < rates_len; i++) { 8611 int ridx, rbit; 8612 8613 ridx = rates[i] / 8; 8614 rbit = BIT(rates[i] % 8); 8615 8616 /* check validity */ 8617 if ((ridx < 0) || (ridx >= IEEE80211_HT_MCS_MASK_LEN)) 8618 return false; 8619 8620 /* check availability */ 8621 if (sband->ht_cap.mcs.rx_mask[ridx] & rbit) 8622 mcs[ridx] |= rbit; 8623 else 8624 return false; 8625 } 8626 8627 return true; 8628 } 8629 8630 static u16 vht_mcs_map_to_mcs_mask(u8 vht_mcs_map) 8631 { 8632 u16 mcs_mask = 0; 8633 8634 switch (vht_mcs_map) { 8635 case IEEE80211_VHT_MCS_NOT_SUPPORTED: 8636 break; 8637 case IEEE80211_VHT_MCS_SUPPORT_0_7: 8638 mcs_mask = 0x00FF; 8639 break; 8640 case IEEE80211_VHT_MCS_SUPPORT_0_8: 8641 mcs_mask = 0x01FF; 8642 break; 8643 case IEEE80211_VHT_MCS_SUPPORT_0_9: 8644 mcs_mask = 0x03FF; 8645 break; 8646 default: 8647 break; 8648 } 8649 8650 return mcs_mask; 8651 } 8652 8653 static void vht_build_mcs_mask(u16 vht_mcs_map, 8654 u16 vht_mcs_mask[NL80211_VHT_NSS_MAX]) 8655 { 8656 u8 nss; 8657 8658 for (nss = 0; nss < NL80211_VHT_NSS_MAX; nss++) { 8659 vht_mcs_mask[nss] = vht_mcs_map_to_mcs_mask(vht_mcs_map & 0x03); 8660 vht_mcs_map >>= 2; 8661 } 8662 } 8663 8664 static bool vht_set_mcs_mask(struct ieee80211_supported_band *sband, 8665 struct nl80211_txrate_vht *txrate, 8666 u16 mcs[NL80211_VHT_NSS_MAX]) 8667 { 8668 u16 tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8669 u16 tx_mcs_mask[NL80211_VHT_NSS_MAX] = {}; 8670 u8 i; 8671 8672 if (!sband->vht_cap.vht_supported) 8673 return false; 8674 8675 memset(mcs, 0, sizeof(u16) * NL80211_VHT_NSS_MAX); 8676 8677 /* Build vht_mcs_mask from VHT capabilities */ 8678 vht_build_mcs_mask(tx_mcs_map, tx_mcs_mask); 8679 8680 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) { 8681 if ((tx_mcs_mask[i] & txrate->mcs[i]) == txrate->mcs[i]) 8682 mcs[i] = txrate->mcs[i]; 8683 else 8684 return false; 8685 } 8686 8687 return true; 8688 } 8689 8690 static const struct nla_policy nl80211_txattr_policy[NL80211_TXRATE_MAX + 1] = { 8691 [NL80211_TXRATE_LEGACY] = { .type = NLA_BINARY, 8692 .len = NL80211_MAX_SUPP_RATES }, 8693 [NL80211_TXRATE_HT] = { .type = NLA_BINARY, 8694 .len = NL80211_MAX_SUPP_HT_RATES }, 8695 [NL80211_TXRATE_VHT] = { .len = sizeof(struct nl80211_txrate_vht)}, 8696 [NL80211_TXRATE_GI] = { .type = NLA_U8 }, 8697 }; 8698 8699 static int nl80211_set_tx_bitrate_mask(struct sk_buff *skb, 8700 struct genl_info *info) 8701 { 8702 struct nlattr *tb[NL80211_TXRATE_MAX + 1]; 8703 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8704 struct cfg80211_bitrate_mask mask; 8705 int rem, i; 8706 struct net_device *dev = info->user_ptr[1]; 8707 struct nlattr *tx_rates; 8708 struct ieee80211_supported_band *sband; 8709 u16 vht_tx_mcs_map; 8710 8711 if (!rdev->ops->set_bitrate_mask) 8712 return -EOPNOTSUPP; 8713 8714 memset(&mask, 0, sizeof(mask)); 8715 /* Default to all rates enabled */ 8716 for (i = 0; i < NUM_NL80211_BANDS; i++) { 8717 sband = rdev->wiphy.bands[i]; 8718 8719 if (!sband) 8720 continue; 8721 8722 mask.control[i].legacy = (1 << sband->n_bitrates) - 1; 8723 memcpy(mask.control[i].ht_mcs, 8724 sband->ht_cap.mcs.rx_mask, 8725 sizeof(mask.control[i].ht_mcs)); 8726 8727 if (!sband->vht_cap.vht_supported) 8728 continue; 8729 8730 vht_tx_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map); 8731 vht_build_mcs_mask(vht_tx_mcs_map, mask.control[i].vht_mcs); 8732 } 8733 8734 /* if no rates are given set it back to the defaults */ 8735 if (!info->attrs[NL80211_ATTR_TX_RATES]) 8736 goto out; 8737 8738 /* 8739 * The nested attribute uses enum nl80211_band as the index. This maps 8740 * directly to the enum nl80211_band values used in cfg80211. 8741 */ 8742 BUILD_BUG_ON(NL80211_MAX_SUPP_HT_RATES > IEEE80211_HT_MCS_MASK_LEN * 8); 8743 nla_for_each_nested(tx_rates, info->attrs[NL80211_ATTR_TX_RATES], rem) { 8744 enum nl80211_band band = nla_type(tx_rates); 8745 int err; 8746 8747 if (band < 0 || band >= NUM_NL80211_BANDS) 8748 return -EINVAL; 8749 sband = rdev->wiphy.bands[band]; 8750 if (sband == NULL) 8751 return -EINVAL; 8752 err = nla_parse(tb, NL80211_TXRATE_MAX, nla_data(tx_rates), 8753 nla_len(tx_rates), nl80211_txattr_policy); 8754 if (err) 8755 return err; 8756 if (tb[NL80211_TXRATE_LEGACY]) { 8757 mask.control[band].legacy = rateset_to_mask( 8758 sband, 8759 nla_data(tb[NL80211_TXRATE_LEGACY]), 8760 nla_len(tb[NL80211_TXRATE_LEGACY])); 8761 if ((mask.control[band].legacy == 0) && 8762 nla_len(tb[NL80211_TXRATE_LEGACY])) 8763 return -EINVAL; 8764 } 8765 if (tb[NL80211_TXRATE_HT]) { 8766 if (!ht_rateset_to_mask( 8767 sband, 8768 nla_data(tb[NL80211_TXRATE_HT]), 8769 nla_len(tb[NL80211_TXRATE_HT]), 8770 mask.control[band].ht_mcs)) 8771 return -EINVAL; 8772 } 8773 if (tb[NL80211_TXRATE_VHT]) { 8774 if (!vht_set_mcs_mask( 8775 sband, 8776 nla_data(tb[NL80211_TXRATE_VHT]), 8777 mask.control[band].vht_mcs)) 8778 return -EINVAL; 8779 } 8780 if (tb[NL80211_TXRATE_GI]) { 8781 mask.control[band].gi = 8782 nla_get_u8(tb[NL80211_TXRATE_GI]); 8783 if (mask.control[band].gi > NL80211_TXRATE_FORCE_LGI) 8784 return -EINVAL; 8785 } 8786 8787 if (mask.control[band].legacy == 0) { 8788 /* don't allow empty legacy rates if HT or VHT 8789 * are not even supported. 8790 */ 8791 if (!(rdev->wiphy.bands[band]->ht_cap.ht_supported || 8792 rdev->wiphy.bands[band]->vht_cap.vht_supported)) 8793 return -EINVAL; 8794 8795 for (i = 0; i < IEEE80211_HT_MCS_MASK_LEN; i++) 8796 if (mask.control[band].ht_mcs[i]) 8797 goto out; 8798 8799 for (i = 0; i < NL80211_VHT_NSS_MAX; i++) 8800 if (mask.control[band].vht_mcs[i]) 8801 goto out; 8802 8803 /* legacy and mcs rates may not be both empty */ 8804 return -EINVAL; 8805 } 8806 } 8807 8808 out: 8809 return rdev_set_bitrate_mask(rdev, dev, NULL, &mask); 8810 } 8811 8812 static int nl80211_register_mgmt(struct sk_buff *skb, struct genl_info *info) 8813 { 8814 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8815 struct wireless_dev *wdev = info->user_ptr[1]; 8816 u16 frame_type = IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_ACTION; 8817 8818 if (!info->attrs[NL80211_ATTR_FRAME_MATCH]) 8819 return -EINVAL; 8820 8821 if (info->attrs[NL80211_ATTR_FRAME_TYPE]) 8822 frame_type = nla_get_u16(info->attrs[NL80211_ATTR_FRAME_TYPE]); 8823 8824 switch (wdev->iftype) { 8825 case NL80211_IFTYPE_STATION: 8826 case NL80211_IFTYPE_ADHOC: 8827 case NL80211_IFTYPE_P2P_CLIENT: 8828 case NL80211_IFTYPE_AP: 8829 case NL80211_IFTYPE_AP_VLAN: 8830 case NL80211_IFTYPE_MESH_POINT: 8831 case NL80211_IFTYPE_P2P_GO: 8832 case NL80211_IFTYPE_P2P_DEVICE: 8833 break; 8834 default: 8835 return -EOPNOTSUPP; 8836 } 8837 8838 /* not much point in registering if we can't reply */ 8839 if (!rdev->ops->mgmt_tx) 8840 return -EOPNOTSUPP; 8841 8842 return cfg80211_mlme_register_mgmt(wdev, info->snd_portid, frame_type, 8843 nla_data(info->attrs[NL80211_ATTR_FRAME_MATCH]), 8844 nla_len(info->attrs[NL80211_ATTR_FRAME_MATCH])); 8845 } 8846 8847 static int nl80211_tx_mgmt(struct sk_buff *skb, struct genl_info *info) 8848 { 8849 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8850 struct wireless_dev *wdev = info->user_ptr[1]; 8851 struct cfg80211_chan_def chandef; 8852 int err; 8853 void *hdr = NULL; 8854 u64 cookie; 8855 struct sk_buff *msg = NULL; 8856 struct cfg80211_mgmt_tx_params params = { 8857 .dont_wait_for_ack = 8858 info->attrs[NL80211_ATTR_DONT_WAIT_FOR_ACK], 8859 }; 8860 8861 if (!info->attrs[NL80211_ATTR_FRAME]) 8862 return -EINVAL; 8863 8864 if (!rdev->ops->mgmt_tx) 8865 return -EOPNOTSUPP; 8866 8867 switch (wdev->iftype) { 8868 case NL80211_IFTYPE_P2P_DEVICE: 8869 if (!info->attrs[NL80211_ATTR_WIPHY_FREQ]) 8870 return -EINVAL; 8871 case NL80211_IFTYPE_STATION: 8872 case NL80211_IFTYPE_ADHOC: 8873 case NL80211_IFTYPE_P2P_CLIENT: 8874 case NL80211_IFTYPE_AP: 8875 case NL80211_IFTYPE_AP_VLAN: 8876 case NL80211_IFTYPE_MESH_POINT: 8877 case NL80211_IFTYPE_P2P_GO: 8878 break; 8879 default: 8880 return -EOPNOTSUPP; 8881 } 8882 8883 if (info->attrs[NL80211_ATTR_DURATION]) { 8884 if (!(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8885 return -EINVAL; 8886 params.wait = nla_get_u32(info->attrs[NL80211_ATTR_DURATION]); 8887 8888 /* 8889 * We should wait on the channel for at least a minimum amount 8890 * of time (10ms) but no longer than the driver supports. 8891 */ 8892 if (params.wait < NL80211_MIN_REMAIN_ON_CHANNEL_TIME || 8893 params.wait > rdev->wiphy.max_remain_on_channel_duration) 8894 return -EINVAL; 8895 } 8896 8897 params.offchan = info->attrs[NL80211_ATTR_OFFCHANNEL_TX_OK]; 8898 8899 if (params.offchan && !(rdev->wiphy.flags & WIPHY_FLAG_OFFCHAN_TX)) 8900 return -EINVAL; 8901 8902 params.no_cck = nla_get_flag(info->attrs[NL80211_ATTR_TX_NO_CCK_RATE]); 8903 8904 /* get the channel if any has been specified, otherwise pass NULL to 8905 * the driver. The latter will use the current one 8906 */ 8907 chandef.chan = NULL; 8908 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 8909 err = nl80211_parse_chandef(rdev, info, &chandef); 8910 if (err) 8911 return err; 8912 } 8913 8914 if (!chandef.chan && params.offchan) 8915 return -EINVAL; 8916 8917 params.buf = nla_data(info->attrs[NL80211_ATTR_FRAME]); 8918 params.len = nla_len(info->attrs[NL80211_ATTR_FRAME]); 8919 8920 if (info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]) { 8921 int len = nla_len(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8922 int i; 8923 8924 if (len % sizeof(u16)) 8925 return -EINVAL; 8926 8927 params.n_csa_offsets = len / sizeof(u16); 8928 params.csa_offsets = 8929 nla_data(info->attrs[NL80211_ATTR_CSA_C_OFFSETS_TX]); 8930 8931 /* check that all the offsets fit the frame */ 8932 for (i = 0; i < params.n_csa_offsets; i++) { 8933 if (params.csa_offsets[i] >= params.len) 8934 return -EINVAL; 8935 } 8936 } 8937 8938 if (!params.dont_wait_for_ack) { 8939 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 8940 if (!msg) 8941 return -ENOMEM; 8942 8943 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 8944 NL80211_CMD_FRAME); 8945 if (!hdr) { 8946 err = -ENOBUFS; 8947 goto free_msg; 8948 } 8949 } 8950 8951 params.chan = chandef.chan; 8952 err = cfg80211_mlme_mgmt_tx(rdev, wdev, ¶ms, &cookie); 8953 if (err) 8954 goto free_msg; 8955 8956 if (msg) { 8957 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 8958 NL80211_ATTR_PAD)) 8959 goto nla_put_failure; 8960 8961 genlmsg_end(msg, hdr); 8962 return genlmsg_reply(msg, info); 8963 } 8964 8965 return 0; 8966 8967 nla_put_failure: 8968 err = -ENOBUFS; 8969 free_msg: 8970 nlmsg_free(msg); 8971 return err; 8972 } 8973 8974 static int nl80211_tx_mgmt_cancel_wait(struct sk_buff *skb, struct genl_info *info) 8975 { 8976 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 8977 struct wireless_dev *wdev = info->user_ptr[1]; 8978 u64 cookie; 8979 8980 if (!info->attrs[NL80211_ATTR_COOKIE]) 8981 return -EINVAL; 8982 8983 if (!rdev->ops->mgmt_tx_cancel_wait) 8984 return -EOPNOTSUPP; 8985 8986 switch (wdev->iftype) { 8987 case NL80211_IFTYPE_STATION: 8988 case NL80211_IFTYPE_ADHOC: 8989 case NL80211_IFTYPE_P2P_CLIENT: 8990 case NL80211_IFTYPE_AP: 8991 case NL80211_IFTYPE_AP_VLAN: 8992 case NL80211_IFTYPE_P2P_GO: 8993 case NL80211_IFTYPE_P2P_DEVICE: 8994 break; 8995 default: 8996 return -EOPNOTSUPP; 8997 } 8998 8999 cookie = nla_get_u64(info->attrs[NL80211_ATTR_COOKIE]); 9000 9001 return rdev_mgmt_tx_cancel_wait(rdev, wdev, cookie); 9002 } 9003 9004 static int nl80211_set_power_save(struct sk_buff *skb, struct genl_info *info) 9005 { 9006 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9007 struct wireless_dev *wdev; 9008 struct net_device *dev = info->user_ptr[1]; 9009 u8 ps_state; 9010 bool state; 9011 int err; 9012 9013 if (!info->attrs[NL80211_ATTR_PS_STATE]) 9014 return -EINVAL; 9015 9016 ps_state = nla_get_u32(info->attrs[NL80211_ATTR_PS_STATE]); 9017 9018 if (ps_state != NL80211_PS_DISABLED && ps_state != NL80211_PS_ENABLED) 9019 return -EINVAL; 9020 9021 wdev = dev->ieee80211_ptr; 9022 9023 if (!rdev->ops->set_power_mgmt) 9024 return -EOPNOTSUPP; 9025 9026 state = (ps_state == NL80211_PS_ENABLED) ? true : false; 9027 9028 if (state == wdev->ps) 9029 return 0; 9030 9031 err = rdev_set_power_mgmt(rdev, dev, state, wdev->ps_timeout); 9032 if (!err) 9033 wdev->ps = state; 9034 return err; 9035 } 9036 9037 static int nl80211_get_power_save(struct sk_buff *skb, struct genl_info *info) 9038 { 9039 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9040 enum nl80211_ps_state ps_state; 9041 struct wireless_dev *wdev; 9042 struct net_device *dev = info->user_ptr[1]; 9043 struct sk_buff *msg; 9044 void *hdr; 9045 int err; 9046 9047 wdev = dev->ieee80211_ptr; 9048 9049 if (!rdev->ops->set_power_mgmt) 9050 return -EOPNOTSUPP; 9051 9052 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9053 if (!msg) 9054 return -ENOMEM; 9055 9056 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9057 NL80211_CMD_GET_POWER_SAVE); 9058 if (!hdr) { 9059 err = -ENOBUFS; 9060 goto free_msg; 9061 } 9062 9063 if (wdev->ps) 9064 ps_state = NL80211_PS_ENABLED; 9065 else 9066 ps_state = NL80211_PS_DISABLED; 9067 9068 if (nla_put_u32(msg, NL80211_ATTR_PS_STATE, ps_state)) 9069 goto nla_put_failure; 9070 9071 genlmsg_end(msg, hdr); 9072 return genlmsg_reply(msg, info); 9073 9074 nla_put_failure: 9075 err = -ENOBUFS; 9076 free_msg: 9077 nlmsg_free(msg); 9078 return err; 9079 } 9080 9081 static const struct nla_policy 9082 nl80211_attr_cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 9083 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 9084 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U32 }, 9085 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 9086 [NL80211_ATTR_CQM_TXE_RATE] = { .type = NLA_U32 }, 9087 [NL80211_ATTR_CQM_TXE_PKTS] = { .type = NLA_U32 }, 9088 [NL80211_ATTR_CQM_TXE_INTVL] = { .type = NLA_U32 }, 9089 }; 9090 9091 static int nl80211_set_cqm_txe(struct genl_info *info, 9092 u32 rate, u32 pkts, u32 intvl) 9093 { 9094 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9095 struct net_device *dev = info->user_ptr[1]; 9096 struct wireless_dev *wdev = dev->ieee80211_ptr; 9097 9098 if (rate > 100 || intvl > NL80211_CQM_TXE_MAX_INTVL) 9099 return -EINVAL; 9100 9101 if (!rdev->ops->set_cqm_txe_config) 9102 return -EOPNOTSUPP; 9103 9104 if (wdev->iftype != NL80211_IFTYPE_STATION && 9105 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9106 return -EOPNOTSUPP; 9107 9108 return rdev_set_cqm_txe_config(rdev, dev, rate, pkts, intvl); 9109 } 9110 9111 static int nl80211_set_cqm_rssi(struct genl_info *info, 9112 s32 threshold, u32 hysteresis) 9113 { 9114 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9115 struct net_device *dev = info->user_ptr[1]; 9116 struct wireless_dev *wdev = dev->ieee80211_ptr; 9117 9118 if (threshold > 0) 9119 return -EINVAL; 9120 9121 /* disabling - hysteresis should also be zero then */ 9122 if (threshold == 0) 9123 hysteresis = 0; 9124 9125 if (!rdev->ops->set_cqm_rssi_config) 9126 return -EOPNOTSUPP; 9127 9128 if (wdev->iftype != NL80211_IFTYPE_STATION && 9129 wdev->iftype != NL80211_IFTYPE_P2P_CLIENT) 9130 return -EOPNOTSUPP; 9131 9132 return rdev_set_cqm_rssi_config(rdev, dev, threshold, hysteresis); 9133 } 9134 9135 static int nl80211_set_cqm(struct sk_buff *skb, struct genl_info *info) 9136 { 9137 struct nlattr *attrs[NL80211_ATTR_CQM_MAX + 1]; 9138 struct nlattr *cqm; 9139 int err; 9140 9141 cqm = info->attrs[NL80211_ATTR_CQM]; 9142 if (!cqm) 9143 return -EINVAL; 9144 9145 err = nla_parse_nested(attrs, NL80211_ATTR_CQM_MAX, cqm, 9146 nl80211_attr_cqm_policy); 9147 if (err) 9148 return err; 9149 9150 if (attrs[NL80211_ATTR_CQM_RSSI_THOLD] && 9151 attrs[NL80211_ATTR_CQM_RSSI_HYST]) { 9152 s32 threshold = nla_get_s32(attrs[NL80211_ATTR_CQM_RSSI_THOLD]); 9153 u32 hysteresis = nla_get_u32(attrs[NL80211_ATTR_CQM_RSSI_HYST]); 9154 9155 return nl80211_set_cqm_rssi(info, threshold, hysteresis); 9156 } 9157 9158 if (attrs[NL80211_ATTR_CQM_TXE_RATE] && 9159 attrs[NL80211_ATTR_CQM_TXE_PKTS] && 9160 attrs[NL80211_ATTR_CQM_TXE_INTVL]) { 9161 u32 rate = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_RATE]); 9162 u32 pkts = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_PKTS]); 9163 u32 intvl = nla_get_u32(attrs[NL80211_ATTR_CQM_TXE_INTVL]); 9164 9165 return nl80211_set_cqm_txe(info, rate, pkts, intvl); 9166 } 9167 9168 return -EINVAL; 9169 } 9170 9171 static int nl80211_join_ocb(struct sk_buff *skb, struct genl_info *info) 9172 { 9173 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9174 struct net_device *dev = info->user_ptr[1]; 9175 struct ocb_setup setup = {}; 9176 int err; 9177 9178 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9179 if (err) 9180 return err; 9181 9182 return cfg80211_join_ocb(rdev, dev, &setup); 9183 } 9184 9185 static int nl80211_leave_ocb(struct sk_buff *skb, struct genl_info *info) 9186 { 9187 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9188 struct net_device *dev = info->user_ptr[1]; 9189 9190 return cfg80211_leave_ocb(rdev, dev); 9191 } 9192 9193 static int nl80211_join_mesh(struct sk_buff *skb, struct genl_info *info) 9194 { 9195 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9196 struct net_device *dev = info->user_ptr[1]; 9197 struct mesh_config cfg; 9198 struct mesh_setup setup; 9199 int err; 9200 9201 /* start with default */ 9202 memcpy(&cfg, &default_mesh_config, sizeof(cfg)); 9203 memcpy(&setup, &default_mesh_setup, sizeof(setup)); 9204 9205 if (info->attrs[NL80211_ATTR_MESH_CONFIG]) { 9206 /* and parse parameters if given */ 9207 err = nl80211_parse_mesh_config(info, &cfg, NULL); 9208 if (err) 9209 return err; 9210 } 9211 9212 if (!info->attrs[NL80211_ATTR_MESH_ID] || 9213 !nla_len(info->attrs[NL80211_ATTR_MESH_ID])) 9214 return -EINVAL; 9215 9216 setup.mesh_id = nla_data(info->attrs[NL80211_ATTR_MESH_ID]); 9217 setup.mesh_id_len = nla_len(info->attrs[NL80211_ATTR_MESH_ID]); 9218 9219 if (info->attrs[NL80211_ATTR_MCAST_RATE] && 9220 !nl80211_parse_mcast_rate(rdev, setup.mcast_rate, 9221 nla_get_u32(info->attrs[NL80211_ATTR_MCAST_RATE]))) 9222 return -EINVAL; 9223 9224 if (info->attrs[NL80211_ATTR_BEACON_INTERVAL]) { 9225 setup.beacon_interval = 9226 nla_get_u32(info->attrs[NL80211_ATTR_BEACON_INTERVAL]); 9227 if (setup.beacon_interval < 10 || 9228 setup.beacon_interval > 10000) 9229 return -EINVAL; 9230 } 9231 9232 if (info->attrs[NL80211_ATTR_DTIM_PERIOD]) { 9233 setup.dtim_period = 9234 nla_get_u32(info->attrs[NL80211_ATTR_DTIM_PERIOD]); 9235 if (setup.dtim_period < 1 || setup.dtim_period > 100) 9236 return -EINVAL; 9237 } 9238 9239 if (info->attrs[NL80211_ATTR_MESH_SETUP]) { 9240 /* parse additional setup parameters if given */ 9241 err = nl80211_parse_mesh_setup(info, &setup); 9242 if (err) 9243 return err; 9244 } 9245 9246 if (setup.user_mpm) 9247 cfg.auto_open_plinks = false; 9248 9249 if (info->attrs[NL80211_ATTR_WIPHY_FREQ]) { 9250 err = nl80211_parse_chandef(rdev, info, &setup.chandef); 9251 if (err) 9252 return err; 9253 } else { 9254 /* cfg80211_join_mesh() will sort it out */ 9255 setup.chandef.chan = NULL; 9256 } 9257 9258 if (info->attrs[NL80211_ATTR_BSS_BASIC_RATES]) { 9259 u8 *rates = nla_data(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9260 int n_rates = 9261 nla_len(info->attrs[NL80211_ATTR_BSS_BASIC_RATES]); 9262 struct ieee80211_supported_band *sband; 9263 9264 if (!setup.chandef.chan) 9265 return -EINVAL; 9266 9267 sband = rdev->wiphy.bands[setup.chandef.chan->band]; 9268 9269 err = ieee80211_get_ratemask(sband, rates, n_rates, 9270 &setup.basic_rates); 9271 if (err) 9272 return err; 9273 } 9274 9275 return cfg80211_join_mesh(rdev, dev, &setup, &cfg); 9276 } 9277 9278 static int nl80211_leave_mesh(struct sk_buff *skb, struct genl_info *info) 9279 { 9280 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9281 struct net_device *dev = info->user_ptr[1]; 9282 9283 return cfg80211_leave_mesh(rdev, dev); 9284 } 9285 9286 #ifdef CONFIG_PM 9287 static int nl80211_send_wowlan_patterns(struct sk_buff *msg, 9288 struct cfg80211_registered_device *rdev) 9289 { 9290 struct cfg80211_wowlan *wowlan = rdev->wiphy.wowlan_config; 9291 struct nlattr *nl_pats, *nl_pat; 9292 int i, pat_len; 9293 9294 if (!wowlan->n_patterns) 9295 return 0; 9296 9297 nl_pats = nla_nest_start(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN); 9298 if (!nl_pats) 9299 return -ENOBUFS; 9300 9301 for (i = 0; i < wowlan->n_patterns; i++) { 9302 nl_pat = nla_nest_start(msg, i + 1); 9303 if (!nl_pat) 9304 return -ENOBUFS; 9305 pat_len = wowlan->patterns[i].pattern_len; 9306 if (nla_put(msg, NL80211_PKTPAT_MASK, DIV_ROUND_UP(pat_len, 8), 9307 wowlan->patterns[i].mask) || 9308 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9309 wowlan->patterns[i].pattern) || 9310 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9311 wowlan->patterns[i].pkt_offset)) 9312 return -ENOBUFS; 9313 nla_nest_end(msg, nl_pat); 9314 } 9315 nla_nest_end(msg, nl_pats); 9316 9317 return 0; 9318 } 9319 9320 static int nl80211_send_wowlan_tcp(struct sk_buff *msg, 9321 struct cfg80211_wowlan_tcp *tcp) 9322 { 9323 struct nlattr *nl_tcp; 9324 9325 if (!tcp) 9326 return 0; 9327 9328 nl_tcp = nla_nest_start(msg, NL80211_WOWLAN_TRIG_TCP_CONNECTION); 9329 if (!nl_tcp) 9330 return -ENOBUFS; 9331 9332 if (nla_put_in_addr(msg, NL80211_WOWLAN_TCP_SRC_IPV4, tcp->src) || 9333 nla_put_in_addr(msg, NL80211_WOWLAN_TCP_DST_IPV4, tcp->dst) || 9334 nla_put(msg, NL80211_WOWLAN_TCP_DST_MAC, ETH_ALEN, tcp->dst_mac) || 9335 nla_put_u16(msg, NL80211_WOWLAN_TCP_SRC_PORT, tcp->src_port) || 9336 nla_put_u16(msg, NL80211_WOWLAN_TCP_DST_PORT, tcp->dst_port) || 9337 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD, 9338 tcp->payload_len, tcp->payload) || 9339 nla_put_u32(msg, NL80211_WOWLAN_TCP_DATA_INTERVAL, 9340 tcp->data_interval) || 9341 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_PAYLOAD, 9342 tcp->wake_len, tcp->wake_data) || 9343 nla_put(msg, NL80211_WOWLAN_TCP_WAKE_MASK, 9344 DIV_ROUND_UP(tcp->wake_len, 8), tcp->wake_mask)) 9345 return -ENOBUFS; 9346 9347 if (tcp->payload_seq.len && 9348 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ, 9349 sizeof(tcp->payload_seq), &tcp->payload_seq)) 9350 return -ENOBUFS; 9351 9352 if (tcp->payload_tok.len && 9353 nla_put(msg, NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN, 9354 sizeof(tcp->payload_tok) + tcp->tokens_size, 9355 &tcp->payload_tok)) 9356 return -ENOBUFS; 9357 9358 nla_nest_end(msg, nl_tcp); 9359 9360 return 0; 9361 } 9362 9363 static int nl80211_send_wowlan_nd(struct sk_buff *msg, 9364 struct cfg80211_sched_scan_request *req) 9365 { 9366 struct nlattr *nd, *freqs, *matches, *match, *scan_plans, *scan_plan; 9367 int i; 9368 9369 if (!req) 9370 return 0; 9371 9372 nd = nla_nest_start(msg, NL80211_WOWLAN_TRIG_NET_DETECT); 9373 if (!nd) 9374 return -ENOBUFS; 9375 9376 if (req->n_scan_plans == 1 && 9377 nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, 9378 req->scan_plans[0].interval * 1000)) 9379 return -ENOBUFS; 9380 9381 if (nla_put_u32(msg, NL80211_ATTR_SCHED_SCAN_DELAY, req->delay)) 9382 return -ENOBUFS; 9383 9384 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 9385 if (!freqs) 9386 return -ENOBUFS; 9387 9388 for (i = 0; i < req->n_channels; i++) 9389 nla_put_u32(msg, i, req->channels[i]->center_freq); 9390 9391 nla_nest_end(msg, freqs); 9392 9393 if (req->n_match_sets) { 9394 matches = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 9395 for (i = 0; i < req->n_match_sets; i++) { 9396 match = nla_nest_start(msg, i); 9397 nla_put(msg, NL80211_SCHED_SCAN_MATCH_ATTR_SSID, 9398 req->match_sets[i].ssid.ssid_len, 9399 req->match_sets[i].ssid.ssid); 9400 nla_nest_end(msg, match); 9401 } 9402 nla_nest_end(msg, matches); 9403 } 9404 9405 scan_plans = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_PLANS); 9406 if (!scan_plans) 9407 return -ENOBUFS; 9408 9409 for (i = 0; i < req->n_scan_plans; i++) { 9410 scan_plan = nla_nest_start(msg, i + 1); 9411 if (!scan_plan || 9412 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_INTERVAL, 9413 req->scan_plans[i].interval) || 9414 (req->scan_plans[i].iterations && 9415 nla_put_u32(msg, NL80211_SCHED_SCAN_PLAN_ITERATIONS, 9416 req->scan_plans[i].iterations))) 9417 return -ENOBUFS; 9418 nla_nest_end(msg, scan_plan); 9419 } 9420 nla_nest_end(msg, scan_plans); 9421 9422 nla_nest_end(msg, nd); 9423 9424 return 0; 9425 } 9426 9427 static int nl80211_get_wowlan(struct sk_buff *skb, struct genl_info *info) 9428 { 9429 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9430 struct sk_buff *msg; 9431 void *hdr; 9432 u32 size = NLMSG_DEFAULT_SIZE; 9433 9434 if (!rdev->wiphy.wowlan) 9435 return -EOPNOTSUPP; 9436 9437 if (rdev->wiphy.wowlan_config && rdev->wiphy.wowlan_config->tcp) { 9438 /* adjust size to have room for all the data */ 9439 size += rdev->wiphy.wowlan_config->tcp->tokens_size + 9440 rdev->wiphy.wowlan_config->tcp->payload_len + 9441 rdev->wiphy.wowlan_config->tcp->wake_len + 9442 rdev->wiphy.wowlan_config->tcp->wake_len / 8; 9443 } 9444 9445 msg = nlmsg_new(size, GFP_KERNEL); 9446 if (!msg) 9447 return -ENOMEM; 9448 9449 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9450 NL80211_CMD_GET_WOWLAN); 9451 if (!hdr) 9452 goto nla_put_failure; 9453 9454 if (rdev->wiphy.wowlan_config) { 9455 struct nlattr *nl_wowlan; 9456 9457 nl_wowlan = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 9458 if (!nl_wowlan) 9459 goto nla_put_failure; 9460 9461 if ((rdev->wiphy.wowlan_config->any && 9462 nla_put_flag(msg, NL80211_WOWLAN_TRIG_ANY)) || 9463 (rdev->wiphy.wowlan_config->disconnect && 9464 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) || 9465 (rdev->wiphy.wowlan_config->magic_pkt && 9466 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) || 9467 (rdev->wiphy.wowlan_config->gtk_rekey_failure && 9468 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) || 9469 (rdev->wiphy.wowlan_config->eap_identity_req && 9470 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) || 9471 (rdev->wiphy.wowlan_config->four_way_handshake && 9472 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) || 9473 (rdev->wiphy.wowlan_config->rfkill_release && 9474 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE))) 9475 goto nla_put_failure; 9476 9477 if (nl80211_send_wowlan_patterns(msg, rdev)) 9478 goto nla_put_failure; 9479 9480 if (nl80211_send_wowlan_tcp(msg, 9481 rdev->wiphy.wowlan_config->tcp)) 9482 goto nla_put_failure; 9483 9484 if (nl80211_send_wowlan_nd( 9485 msg, 9486 rdev->wiphy.wowlan_config->nd_config)) 9487 goto nla_put_failure; 9488 9489 nla_nest_end(msg, nl_wowlan); 9490 } 9491 9492 genlmsg_end(msg, hdr); 9493 return genlmsg_reply(msg, info); 9494 9495 nla_put_failure: 9496 nlmsg_free(msg); 9497 return -ENOBUFS; 9498 } 9499 9500 static int nl80211_parse_wowlan_tcp(struct cfg80211_registered_device *rdev, 9501 struct nlattr *attr, 9502 struct cfg80211_wowlan *trig) 9503 { 9504 struct nlattr *tb[NUM_NL80211_WOWLAN_TCP]; 9505 struct cfg80211_wowlan_tcp *cfg; 9506 struct nl80211_wowlan_tcp_data_token *tok = NULL; 9507 struct nl80211_wowlan_tcp_data_seq *seq = NULL; 9508 u32 size; 9509 u32 data_size, wake_size, tokens_size = 0, wake_mask_size; 9510 int err, port; 9511 9512 if (!rdev->wiphy.wowlan->tcp) 9513 return -EINVAL; 9514 9515 err = nla_parse(tb, MAX_NL80211_WOWLAN_TCP, 9516 nla_data(attr), nla_len(attr), 9517 nl80211_wowlan_tcp_policy); 9518 if (err) 9519 return err; 9520 9521 if (!tb[NL80211_WOWLAN_TCP_SRC_IPV4] || 9522 !tb[NL80211_WOWLAN_TCP_DST_IPV4] || 9523 !tb[NL80211_WOWLAN_TCP_DST_MAC] || 9524 !tb[NL80211_WOWLAN_TCP_DST_PORT] || 9525 !tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD] || 9526 !tb[NL80211_WOWLAN_TCP_DATA_INTERVAL] || 9527 !tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD] || 9528 !tb[NL80211_WOWLAN_TCP_WAKE_MASK]) 9529 return -EINVAL; 9530 9531 data_size = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]); 9532 if (data_size > rdev->wiphy.wowlan->tcp->data_payload_max) 9533 return -EINVAL; 9534 9535 if (nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) > 9536 rdev->wiphy.wowlan->tcp->data_interval_max || 9537 nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]) == 0) 9538 return -EINVAL; 9539 9540 wake_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]); 9541 if (wake_size > rdev->wiphy.wowlan->tcp->wake_payload_max) 9542 return -EINVAL; 9543 9544 wake_mask_size = nla_len(tb[NL80211_WOWLAN_TCP_WAKE_MASK]); 9545 if (wake_mask_size != DIV_ROUND_UP(wake_size, 8)) 9546 return -EINVAL; 9547 9548 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]) { 9549 u32 tokln = nla_len(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9550 9551 tok = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_TOKEN]); 9552 tokens_size = tokln - sizeof(*tok); 9553 9554 if (!tok->len || tokens_size % tok->len) 9555 return -EINVAL; 9556 if (!rdev->wiphy.wowlan->tcp->tok) 9557 return -EINVAL; 9558 if (tok->len > rdev->wiphy.wowlan->tcp->tok->max_len) 9559 return -EINVAL; 9560 if (tok->len < rdev->wiphy.wowlan->tcp->tok->min_len) 9561 return -EINVAL; 9562 if (tokens_size > rdev->wiphy.wowlan->tcp->tok->bufsize) 9563 return -EINVAL; 9564 if (tok->offset + tok->len > data_size) 9565 return -EINVAL; 9566 } 9567 9568 if (tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]) { 9569 seq = nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD_SEQ]); 9570 if (!rdev->wiphy.wowlan->tcp->seq) 9571 return -EINVAL; 9572 if (seq->len == 0 || seq->len > 4) 9573 return -EINVAL; 9574 if (seq->len + seq->offset > data_size) 9575 return -EINVAL; 9576 } 9577 9578 size = sizeof(*cfg); 9579 size += data_size; 9580 size += wake_size + wake_mask_size; 9581 size += tokens_size; 9582 9583 cfg = kzalloc(size, GFP_KERNEL); 9584 if (!cfg) 9585 return -ENOMEM; 9586 cfg->src = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_SRC_IPV4]); 9587 cfg->dst = nla_get_in_addr(tb[NL80211_WOWLAN_TCP_DST_IPV4]); 9588 memcpy(cfg->dst_mac, nla_data(tb[NL80211_WOWLAN_TCP_DST_MAC]), 9589 ETH_ALEN); 9590 if (tb[NL80211_WOWLAN_TCP_SRC_PORT]) 9591 port = nla_get_u16(tb[NL80211_WOWLAN_TCP_SRC_PORT]); 9592 else 9593 port = 0; 9594 #ifdef CONFIG_INET 9595 /* allocate a socket and port for it and use it */ 9596 err = __sock_create(wiphy_net(&rdev->wiphy), PF_INET, SOCK_STREAM, 9597 IPPROTO_TCP, &cfg->sock, 1); 9598 if (err) { 9599 kfree(cfg); 9600 return err; 9601 } 9602 if (inet_csk_get_port(cfg->sock->sk, port)) { 9603 sock_release(cfg->sock); 9604 kfree(cfg); 9605 return -EADDRINUSE; 9606 } 9607 cfg->src_port = inet_sk(cfg->sock->sk)->inet_num; 9608 #else 9609 if (!port) { 9610 kfree(cfg); 9611 return -EINVAL; 9612 } 9613 cfg->src_port = port; 9614 #endif 9615 9616 cfg->dst_port = nla_get_u16(tb[NL80211_WOWLAN_TCP_DST_PORT]); 9617 cfg->payload_len = data_size; 9618 cfg->payload = (u8 *)cfg + sizeof(*cfg) + tokens_size; 9619 memcpy((void *)cfg->payload, 9620 nla_data(tb[NL80211_WOWLAN_TCP_DATA_PAYLOAD]), 9621 data_size); 9622 if (seq) 9623 cfg->payload_seq = *seq; 9624 cfg->data_interval = nla_get_u32(tb[NL80211_WOWLAN_TCP_DATA_INTERVAL]); 9625 cfg->wake_len = wake_size; 9626 cfg->wake_data = (u8 *)cfg + sizeof(*cfg) + tokens_size + data_size; 9627 memcpy((void *)cfg->wake_data, 9628 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_PAYLOAD]), 9629 wake_size); 9630 cfg->wake_mask = (u8 *)cfg + sizeof(*cfg) + tokens_size + 9631 data_size + wake_size; 9632 memcpy((void *)cfg->wake_mask, 9633 nla_data(tb[NL80211_WOWLAN_TCP_WAKE_MASK]), 9634 wake_mask_size); 9635 if (tok) { 9636 cfg->tokens_size = tokens_size; 9637 memcpy(&cfg->payload_tok, tok, sizeof(*tok) + tokens_size); 9638 } 9639 9640 trig->tcp = cfg; 9641 9642 return 0; 9643 } 9644 9645 static int nl80211_parse_wowlan_nd(struct cfg80211_registered_device *rdev, 9646 const struct wiphy_wowlan_support *wowlan, 9647 struct nlattr *attr, 9648 struct cfg80211_wowlan *trig) 9649 { 9650 struct nlattr **tb; 9651 int err; 9652 9653 tb = kzalloc(NUM_NL80211_ATTR * sizeof(*tb), GFP_KERNEL); 9654 if (!tb) 9655 return -ENOMEM; 9656 9657 if (!(wowlan->flags & WIPHY_WOWLAN_NET_DETECT)) { 9658 err = -EOPNOTSUPP; 9659 goto out; 9660 } 9661 9662 err = nla_parse(tb, NL80211_ATTR_MAX, 9663 nla_data(attr), nla_len(attr), 9664 nl80211_policy); 9665 if (err) 9666 goto out; 9667 9668 trig->nd_config = nl80211_parse_sched_scan(&rdev->wiphy, NULL, tb); 9669 err = PTR_ERR_OR_ZERO(trig->nd_config); 9670 if (err) 9671 trig->nd_config = NULL; 9672 9673 out: 9674 kfree(tb); 9675 return err; 9676 } 9677 9678 static int nl80211_set_wowlan(struct sk_buff *skb, struct genl_info *info) 9679 { 9680 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9681 struct nlattr *tb[NUM_NL80211_WOWLAN_TRIG]; 9682 struct cfg80211_wowlan new_triggers = {}; 9683 struct cfg80211_wowlan *ntrig; 9684 const struct wiphy_wowlan_support *wowlan = rdev->wiphy.wowlan; 9685 int err, i; 9686 bool prev_enabled = rdev->wiphy.wowlan_config; 9687 bool regular = false; 9688 9689 if (!wowlan) 9690 return -EOPNOTSUPP; 9691 9692 if (!info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]) { 9693 cfg80211_rdev_free_wowlan(rdev); 9694 rdev->wiphy.wowlan_config = NULL; 9695 goto set_wakeup; 9696 } 9697 9698 err = nla_parse(tb, MAX_NL80211_WOWLAN_TRIG, 9699 nla_data(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9700 nla_len(info->attrs[NL80211_ATTR_WOWLAN_TRIGGERS]), 9701 nl80211_wowlan_policy); 9702 if (err) 9703 return err; 9704 9705 if (tb[NL80211_WOWLAN_TRIG_ANY]) { 9706 if (!(wowlan->flags & WIPHY_WOWLAN_ANY)) 9707 return -EINVAL; 9708 new_triggers.any = true; 9709 } 9710 9711 if (tb[NL80211_WOWLAN_TRIG_DISCONNECT]) { 9712 if (!(wowlan->flags & WIPHY_WOWLAN_DISCONNECT)) 9713 return -EINVAL; 9714 new_triggers.disconnect = true; 9715 regular = true; 9716 } 9717 9718 if (tb[NL80211_WOWLAN_TRIG_MAGIC_PKT]) { 9719 if (!(wowlan->flags & WIPHY_WOWLAN_MAGIC_PKT)) 9720 return -EINVAL; 9721 new_triggers.magic_pkt = true; 9722 regular = true; 9723 } 9724 9725 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_SUPPORTED]) 9726 return -EINVAL; 9727 9728 if (tb[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) { 9729 if (!(wowlan->flags & WIPHY_WOWLAN_GTK_REKEY_FAILURE)) 9730 return -EINVAL; 9731 new_triggers.gtk_rekey_failure = true; 9732 regular = true; 9733 } 9734 9735 if (tb[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) { 9736 if (!(wowlan->flags & WIPHY_WOWLAN_EAP_IDENTITY_REQ)) 9737 return -EINVAL; 9738 new_triggers.eap_identity_req = true; 9739 regular = true; 9740 } 9741 9742 if (tb[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) { 9743 if (!(wowlan->flags & WIPHY_WOWLAN_4WAY_HANDSHAKE)) 9744 return -EINVAL; 9745 new_triggers.four_way_handshake = true; 9746 regular = true; 9747 } 9748 9749 if (tb[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) { 9750 if (!(wowlan->flags & WIPHY_WOWLAN_RFKILL_RELEASE)) 9751 return -EINVAL; 9752 new_triggers.rfkill_release = true; 9753 regular = true; 9754 } 9755 9756 if (tb[NL80211_WOWLAN_TRIG_PKT_PATTERN]) { 9757 struct nlattr *pat; 9758 int n_patterns = 0; 9759 int rem, pat_len, mask_len, pkt_offset; 9760 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9761 9762 regular = true; 9763 9764 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9765 rem) 9766 n_patterns++; 9767 if (n_patterns > wowlan->n_patterns) 9768 return -EINVAL; 9769 9770 new_triggers.patterns = kcalloc(n_patterns, 9771 sizeof(new_triggers.patterns[0]), 9772 GFP_KERNEL); 9773 if (!new_triggers.patterns) 9774 return -ENOMEM; 9775 9776 new_triggers.n_patterns = n_patterns; 9777 i = 0; 9778 9779 nla_for_each_nested(pat, tb[NL80211_WOWLAN_TRIG_PKT_PATTERN], 9780 rem) { 9781 u8 *mask_pat; 9782 9783 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 9784 nla_len(pat), NULL); 9785 err = -EINVAL; 9786 if (!pat_tb[NL80211_PKTPAT_MASK] || 9787 !pat_tb[NL80211_PKTPAT_PATTERN]) 9788 goto error; 9789 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 9790 mask_len = DIV_ROUND_UP(pat_len, 8); 9791 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 9792 goto error; 9793 if (pat_len > wowlan->pattern_max_len || 9794 pat_len < wowlan->pattern_min_len) 9795 goto error; 9796 9797 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 9798 pkt_offset = 0; 9799 else 9800 pkt_offset = nla_get_u32( 9801 pat_tb[NL80211_PKTPAT_OFFSET]); 9802 if (pkt_offset > wowlan->max_pkt_offset) 9803 goto error; 9804 new_triggers.patterns[i].pkt_offset = pkt_offset; 9805 9806 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 9807 if (!mask_pat) { 9808 err = -ENOMEM; 9809 goto error; 9810 } 9811 new_triggers.patterns[i].mask = mask_pat; 9812 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 9813 mask_len); 9814 mask_pat += mask_len; 9815 new_triggers.patterns[i].pattern = mask_pat; 9816 new_triggers.patterns[i].pattern_len = pat_len; 9817 memcpy(mask_pat, 9818 nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 9819 pat_len); 9820 i++; 9821 } 9822 } 9823 9824 if (tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION]) { 9825 regular = true; 9826 err = nl80211_parse_wowlan_tcp( 9827 rdev, tb[NL80211_WOWLAN_TRIG_TCP_CONNECTION], 9828 &new_triggers); 9829 if (err) 9830 goto error; 9831 } 9832 9833 if (tb[NL80211_WOWLAN_TRIG_NET_DETECT]) { 9834 regular = true; 9835 err = nl80211_parse_wowlan_nd( 9836 rdev, wowlan, tb[NL80211_WOWLAN_TRIG_NET_DETECT], 9837 &new_triggers); 9838 if (err) 9839 goto error; 9840 } 9841 9842 /* The 'any' trigger means the device continues operating more or less 9843 * as in its normal operation mode and wakes up the host on most of the 9844 * normal interrupts (like packet RX, ...) 9845 * It therefore makes little sense to combine with the more constrained 9846 * wakeup trigger modes. 9847 */ 9848 if (new_triggers.any && regular) { 9849 err = -EINVAL; 9850 goto error; 9851 } 9852 9853 ntrig = kmemdup(&new_triggers, sizeof(new_triggers), GFP_KERNEL); 9854 if (!ntrig) { 9855 err = -ENOMEM; 9856 goto error; 9857 } 9858 cfg80211_rdev_free_wowlan(rdev); 9859 rdev->wiphy.wowlan_config = ntrig; 9860 9861 set_wakeup: 9862 if (rdev->ops->set_wakeup && 9863 prev_enabled != !!rdev->wiphy.wowlan_config) 9864 rdev_set_wakeup(rdev, rdev->wiphy.wowlan_config); 9865 9866 return 0; 9867 error: 9868 for (i = 0; i < new_triggers.n_patterns; i++) 9869 kfree(new_triggers.patterns[i].mask); 9870 kfree(new_triggers.patterns); 9871 if (new_triggers.tcp && new_triggers.tcp->sock) 9872 sock_release(new_triggers.tcp->sock); 9873 kfree(new_triggers.tcp); 9874 kfree(new_triggers.nd_config); 9875 return err; 9876 } 9877 #endif 9878 9879 static int nl80211_send_coalesce_rules(struct sk_buff *msg, 9880 struct cfg80211_registered_device *rdev) 9881 { 9882 struct nlattr *nl_pats, *nl_pat, *nl_rule, *nl_rules; 9883 int i, j, pat_len; 9884 struct cfg80211_coalesce_rules *rule; 9885 9886 if (!rdev->coalesce->n_rules) 9887 return 0; 9888 9889 nl_rules = nla_nest_start(msg, NL80211_ATTR_COALESCE_RULE); 9890 if (!nl_rules) 9891 return -ENOBUFS; 9892 9893 for (i = 0; i < rdev->coalesce->n_rules; i++) { 9894 nl_rule = nla_nest_start(msg, i + 1); 9895 if (!nl_rule) 9896 return -ENOBUFS; 9897 9898 rule = &rdev->coalesce->rules[i]; 9899 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_DELAY, 9900 rule->delay)) 9901 return -ENOBUFS; 9902 9903 if (nla_put_u32(msg, NL80211_ATTR_COALESCE_RULE_CONDITION, 9904 rule->condition)) 9905 return -ENOBUFS; 9906 9907 nl_pats = nla_nest_start(msg, 9908 NL80211_ATTR_COALESCE_RULE_PKT_PATTERN); 9909 if (!nl_pats) 9910 return -ENOBUFS; 9911 9912 for (j = 0; j < rule->n_patterns; j++) { 9913 nl_pat = nla_nest_start(msg, j + 1); 9914 if (!nl_pat) 9915 return -ENOBUFS; 9916 pat_len = rule->patterns[j].pattern_len; 9917 if (nla_put(msg, NL80211_PKTPAT_MASK, 9918 DIV_ROUND_UP(pat_len, 8), 9919 rule->patterns[j].mask) || 9920 nla_put(msg, NL80211_PKTPAT_PATTERN, pat_len, 9921 rule->patterns[j].pattern) || 9922 nla_put_u32(msg, NL80211_PKTPAT_OFFSET, 9923 rule->patterns[j].pkt_offset)) 9924 return -ENOBUFS; 9925 nla_nest_end(msg, nl_pat); 9926 } 9927 nla_nest_end(msg, nl_pats); 9928 nla_nest_end(msg, nl_rule); 9929 } 9930 nla_nest_end(msg, nl_rules); 9931 9932 return 0; 9933 } 9934 9935 static int nl80211_get_coalesce(struct sk_buff *skb, struct genl_info *info) 9936 { 9937 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 9938 struct sk_buff *msg; 9939 void *hdr; 9940 9941 if (!rdev->wiphy.coalesce) 9942 return -EOPNOTSUPP; 9943 9944 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 9945 if (!msg) 9946 return -ENOMEM; 9947 9948 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 9949 NL80211_CMD_GET_COALESCE); 9950 if (!hdr) 9951 goto nla_put_failure; 9952 9953 if (rdev->coalesce && nl80211_send_coalesce_rules(msg, rdev)) 9954 goto nla_put_failure; 9955 9956 genlmsg_end(msg, hdr); 9957 return genlmsg_reply(msg, info); 9958 9959 nla_put_failure: 9960 nlmsg_free(msg); 9961 return -ENOBUFS; 9962 } 9963 9964 void cfg80211_rdev_free_coalesce(struct cfg80211_registered_device *rdev) 9965 { 9966 struct cfg80211_coalesce *coalesce = rdev->coalesce; 9967 int i, j; 9968 struct cfg80211_coalesce_rules *rule; 9969 9970 if (!coalesce) 9971 return; 9972 9973 for (i = 0; i < coalesce->n_rules; i++) { 9974 rule = &coalesce->rules[i]; 9975 for (j = 0; j < rule->n_patterns; j++) 9976 kfree(rule->patterns[j].mask); 9977 kfree(rule->patterns); 9978 } 9979 kfree(coalesce->rules); 9980 kfree(coalesce); 9981 rdev->coalesce = NULL; 9982 } 9983 9984 static int nl80211_parse_coalesce_rule(struct cfg80211_registered_device *rdev, 9985 struct nlattr *rule, 9986 struct cfg80211_coalesce_rules *new_rule) 9987 { 9988 int err, i; 9989 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 9990 struct nlattr *tb[NUM_NL80211_ATTR_COALESCE_RULE], *pat; 9991 int rem, pat_len, mask_len, pkt_offset, n_patterns = 0; 9992 struct nlattr *pat_tb[NUM_NL80211_PKTPAT]; 9993 9994 err = nla_parse(tb, NL80211_ATTR_COALESCE_RULE_MAX, nla_data(rule), 9995 nla_len(rule), nl80211_coalesce_policy); 9996 if (err) 9997 return err; 9998 9999 if (tb[NL80211_ATTR_COALESCE_RULE_DELAY]) 10000 new_rule->delay = 10001 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_DELAY]); 10002 if (new_rule->delay > coalesce->max_delay) 10003 return -EINVAL; 10004 10005 if (tb[NL80211_ATTR_COALESCE_RULE_CONDITION]) 10006 new_rule->condition = 10007 nla_get_u32(tb[NL80211_ATTR_COALESCE_RULE_CONDITION]); 10008 if (new_rule->condition != NL80211_COALESCE_CONDITION_MATCH && 10009 new_rule->condition != NL80211_COALESCE_CONDITION_NO_MATCH) 10010 return -EINVAL; 10011 10012 if (!tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN]) 10013 return -EINVAL; 10014 10015 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10016 rem) 10017 n_patterns++; 10018 if (n_patterns > coalesce->n_patterns) 10019 return -EINVAL; 10020 10021 new_rule->patterns = kcalloc(n_patterns, sizeof(new_rule->patterns[0]), 10022 GFP_KERNEL); 10023 if (!new_rule->patterns) 10024 return -ENOMEM; 10025 10026 new_rule->n_patterns = n_patterns; 10027 i = 0; 10028 10029 nla_for_each_nested(pat, tb[NL80211_ATTR_COALESCE_RULE_PKT_PATTERN], 10030 rem) { 10031 u8 *mask_pat; 10032 10033 nla_parse(pat_tb, MAX_NL80211_PKTPAT, nla_data(pat), 10034 nla_len(pat), NULL); 10035 if (!pat_tb[NL80211_PKTPAT_MASK] || 10036 !pat_tb[NL80211_PKTPAT_PATTERN]) 10037 return -EINVAL; 10038 pat_len = nla_len(pat_tb[NL80211_PKTPAT_PATTERN]); 10039 mask_len = DIV_ROUND_UP(pat_len, 8); 10040 if (nla_len(pat_tb[NL80211_PKTPAT_MASK]) != mask_len) 10041 return -EINVAL; 10042 if (pat_len > coalesce->pattern_max_len || 10043 pat_len < coalesce->pattern_min_len) 10044 return -EINVAL; 10045 10046 if (!pat_tb[NL80211_PKTPAT_OFFSET]) 10047 pkt_offset = 0; 10048 else 10049 pkt_offset = nla_get_u32(pat_tb[NL80211_PKTPAT_OFFSET]); 10050 if (pkt_offset > coalesce->max_pkt_offset) 10051 return -EINVAL; 10052 new_rule->patterns[i].pkt_offset = pkt_offset; 10053 10054 mask_pat = kmalloc(mask_len + pat_len, GFP_KERNEL); 10055 if (!mask_pat) 10056 return -ENOMEM; 10057 10058 new_rule->patterns[i].mask = mask_pat; 10059 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_MASK]), 10060 mask_len); 10061 10062 mask_pat += mask_len; 10063 new_rule->patterns[i].pattern = mask_pat; 10064 new_rule->patterns[i].pattern_len = pat_len; 10065 memcpy(mask_pat, nla_data(pat_tb[NL80211_PKTPAT_PATTERN]), 10066 pat_len); 10067 i++; 10068 } 10069 10070 return 0; 10071 } 10072 10073 static int nl80211_set_coalesce(struct sk_buff *skb, struct genl_info *info) 10074 { 10075 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10076 const struct wiphy_coalesce_support *coalesce = rdev->wiphy.coalesce; 10077 struct cfg80211_coalesce new_coalesce = {}; 10078 struct cfg80211_coalesce *n_coalesce; 10079 int err, rem_rule, n_rules = 0, i, j; 10080 struct nlattr *rule; 10081 struct cfg80211_coalesce_rules *tmp_rule; 10082 10083 if (!rdev->wiphy.coalesce || !rdev->ops->set_coalesce) 10084 return -EOPNOTSUPP; 10085 10086 if (!info->attrs[NL80211_ATTR_COALESCE_RULE]) { 10087 cfg80211_rdev_free_coalesce(rdev); 10088 rdev_set_coalesce(rdev, NULL); 10089 return 0; 10090 } 10091 10092 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10093 rem_rule) 10094 n_rules++; 10095 if (n_rules > coalesce->n_rules) 10096 return -EINVAL; 10097 10098 new_coalesce.rules = kcalloc(n_rules, sizeof(new_coalesce.rules[0]), 10099 GFP_KERNEL); 10100 if (!new_coalesce.rules) 10101 return -ENOMEM; 10102 10103 new_coalesce.n_rules = n_rules; 10104 i = 0; 10105 10106 nla_for_each_nested(rule, info->attrs[NL80211_ATTR_COALESCE_RULE], 10107 rem_rule) { 10108 err = nl80211_parse_coalesce_rule(rdev, rule, 10109 &new_coalesce.rules[i]); 10110 if (err) 10111 goto error; 10112 10113 i++; 10114 } 10115 10116 err = rdev_set_coalesce(rdev, &new_coalesce); 10117 if (err) 10118 goto error; 10119 10120 n_coalesce = kmemdup(&new_coalesce, sizeof(new_coalesce), GFP_KERNEL); 10121 if (!n_coalesce) { 10122 err = -ENOMEM; 10123 goto error; 10124 } 10125 cfg80211_rdev_free_coalesce(rdev); 10126 rdev->coalesce = n_coalesce; 10127 10128 return 0; 10129 error: 10130 for (i = 0; i < new_coalesce.n_rules; i++) { 10131 tmp_rule = &new_coalesce.rules[i]; 10132 for (j = 0; j < tmp_rule->n_patterns; j++) 10133 kfree(tmp_rule->patterns[j].mask); 10134 kfree(tmp_rule->patterns); 10135 } 10136 kfree(new_coalesce.rules); 10137 10138 return err; 10139 } 10140 10141 static int nl80211_set_rekey_data(struct sk_buff *skb, struct genl_info *info) 10142 { 10143 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10144 struct net_device *dev = info->user_ptr[1]; 10145 struct wireless_dev *wdev = dev->ieee80211_ptr; 10146 struct nlattr *tb[NUM_NL80211_REKEY_DATA]; 10147 struct cfg80211_gtk_rekey_data rekey_data; 10148 int err; 10149 10150 if (!info->attrs[NL80211_ATTR_REKEY_DATA]) 10151 return -EINVAL; 10152 10153 err = nla_parse(tb, MAX_NL80211_REKEY_DATA, 10154 nla_data(info->attrs[NL80211_ATTR_REKEY_DATA]), 10155 nla_len(info->attrs[NL80211_ATTR_REKEY_DATA]), 10156 nl80211_rekey_policy); 10157 if (err) 10158 return err; 10159 10160 if (nla_len(tb[NL80211_REKEY_DATA_REPLAY_CTR]) != NL80211_REPLAY_CTR_LEN) 10161 return -ERANGE; 10162 if (nla_len(tb[NL80211_REKEY_DATA_KEK]) != NL80211_KEK_LEN) 10163 return -ERANGE; 10164 if (nla_len(tb[NL80211_REKEY_DATA_KCK]) != NL80211_KCK_LEN) 10165 return -ERANGE; 10166 10167 rekey_data.kek = nla_data(tb[NL80211_REKEY_DATA_KEK]); 10168 rekey_data.kck = nla_data(tb[NL80211_REKEY_DATA_KCK]); 10169 rekey_data.replay_ctr = nla_data(tb[NL80211_REKEY_DATA_REPLAY_CTR]); 10170 10171 wdev_lock(wdev); 10172 if (!wdev->current_bss) { 10173 err = -ENOTCONN; 10174 goto out; 10175 } 10176 10177 if (!rdev->ops->set_rekey_data) { 10178 err = -EOPNOTSUPP; 10179 goto out; 10180 } 10181 10182 err = rdev_set_rekey_data(rdev, dev, &rekey_data); 10183 out: 10184 wdev_unlock(wdev); 10185 return err; 10186 } 10187 10188 static int nl80211_register_unexpected_frame(struct sk_buff *skb, 10189 struct genl_info *info) 10190 { 10191 struct net_device *dev = info->user_ptr[1]; 10192 struct wireless_dev *wdev = dev->ieee80211_ptr; 10193 10194 if (wdev->iftype != NL80211_IFTYPE_AP && 10195 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10196 return -EINVAL; 10197 10198 if (wdev->ap_unexpected_nlportid) 10199 return -EBUSY; 10200 10201 wdev->ap_unexpected_nlportid = info->snd_portid; 10202 return 0; 10203 } 10204 10205 static int nl80211_probe_client(struct sk_buff *skb, 10206 struct genl_info *info) 10207 { 10208 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10209 struct net_device *dev = info->user_ptr[1]; 10210 struct wireless_dev *wdev = dev->ieee80211_ptr; 10211 struct sk_buff *msg; 10212 void *hdr; 10213 const u8 *addr; 10214 u64 cookie; 10215 int err; 10216 10217 if (wdev->iftype != NL80211_IFTYPE_AP && 10218 wdev->iftype != NL80211_IFTYPE_P2P_GO) 10219 return -EOPNOTSUPP; 10220 10221 if (!info->attrs[NL80211_ATTR_MAC]) 10222 return -EINVAL; 10223 10224 if (!rdev->ops->probe_client) 10225 return -EOPNOTSUPP; 10226 10227 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10228 if (!msg) 10229 return -ENOMEM; 10230 10231 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10232 NL80211_CMD_PROBE_CLIENT); 10233 if (!hdr) { 10234 err = -ENOBUFS; 10235 goto free_msg; 10236 } 10237 10238 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10239 10240 err = rdev_probe_client(rdev, dev, addr, &cookie); 10241 if (err) 10242 goto free_msg; 10243 10244 if (nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 10245 NL80211_ATTR_PAD)) 10246 goto nla_put_failure; 10247 10248 genlmsg_end(msg, hdr); 10249 10250 return genlmsg_reply(msg, info); 10251 10252 nla_put_failure: 10253 err = -ENOBUFS; 10254 free_msg: 10255 nlmsg_free(msg); 10256 return err; 10257 } 10258 10259 static int nl80211_register_beacons(struct sk_buff *skb, struct genl_info *info) 10260 { 10261 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10262 struct cfg80211_beacon_registration *reg, *nreg; 10263 int rv; 10264 10265 if (!(rdev->wiphy.flags & WIPHY_FLAG_REPORTS_OBSS)) 10266 return -EOPNOTSUPP; 10267 10268 nreg = kzalloc(sizeof(*nreg), GFP_KERNEL); 10269 if (!nreg) 10270 return -ENOMEM; 10271 10272 /* First, check if already registered. */ 10273 spin_lock_bh(&rdev->beacon_registrations_lock); 10274 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 10275 if (reg->nlportid == info->snd_portid) { 10276 rv = -EALREADY; 10277 goto out_err; 10278 } 10279 } 10280 /* Add it to the list */ 10281 nreg->nlportid = info->snd_portid; 10282 list_add(&nreg->list, &rdev->beacon_registrations); 10283 10284 spin_unlock_bh(&rdev->beacon_registrations_lock); 10285 10286 return 0; 10287 out_err: 10288 spin_unlock_bh(&rdev->beacon_registrations_lock); 10289 kfree(nreg); 10290 return rv; 10291 } 10292 10293 static int nl80211_start_p2p_device(struct sk_buff *skb, struct genl_info *info) 10294 { 10295 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10296 struct wireless_dev *wdev = info->user_ptr[1]; 10297 int err; 10298 10299 if (!rdev->ops->start_p2p_device) 10300 return -EOPNOTSUPP; 10301 10302 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 10303 return -EOPNOTSUPP; 10304 10305 if (wdev->p2p_started) 10306 return 0; 10307 10308 if (rfkill_blocked(rdev->rfkill)) 10309 return -ERFKILL; 10310 10311 err = rdev_start_p2p_device(rdev, wdev); 10312 if (err) 10313 return err; 10314 10315 wdev->p2p_started = true; 10316 rdev->opencount++; 10317 10318 return 0; 10319 } 10320 10321 static int nl80211_stop_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 10326 if (wdev->iftype != NL80211_IFTYPE_P2P_DEVICE) 10327 return -EOPNOTSUPP; 10328 10329 if (!rdev->ops->stop_p2p_device) 10330 return -EOPNOTSUPP; 10331 10332 cfg80211_stop_p2p_device(rdev, wdev); 10333 10334 return 0; 10335 } 10336 10337 static int nl80211_get_protocol_features(struct sk_buff *skb, 10338 struct genl_info *info) 10339 { 10340 void *hdr; 10341 struct sk_buff *msg; 10342 10343 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 10344 if (!msg) 10345 return -ENOMEM; 10346 10347 hdr = nl80211hdr_put(msg, info->snd_portid, info->snd_seq, 0, 10348 NL80211_CMD_GET_PROTOCOL_FEATURES); 10349 if (!hdr) 10350 goto nla_put_failure; 10351 10352 if (nla_put_u32(msg, NL80211_ATTR_PROTOCOL_FEATURES, 10353 NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP)) 10354 goto nla_put_failure; 10355 10356 genlmsg_end(msg, hdr); 10357 return genlmsg_reply(msg, info); 10358 10359 nla_put_failure: 10360 kfree_skb(msg); 10361 return -ENOBUFS; 10362 } 10363 10364 static int nl80211_update_ft_ies(struct sk_buff *skb, struct genl_info *info) 10365 { 10366 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10367 struct cfg80211_update_ft_ies_params ft_params; 10368 struct net_device *dev = info->user_ptr[1]; 10369 10370 if (!rdev->ops->update_ft_ies) 10371 return -EOPNOTSUPP; 10372 10373 if (!info->attrs[NL80211_ATTR_MDID] || 10374 !is_valid_ie_attr(info->attrs[NL80211_ATTR_IE])) 10375 return -EINVAL; 10376 10377 memset(&ft_params, 0, sizeof(ft_params)); 10378 ft_params.md = nla_get_u16(info->attrs[NL80211_ATTR_MDID]); 10379 ft_params.ie = nla_data(info->attrs[NL80211_ATTR_IE]); 10380 ft_params.ie_len = nla_len(info->attrs[NL80211_ATTR_IE]); 10381 10382 return rdev_update_ft_ies(rdev, dev, &ft_params); 10383 } 10384 10385 static int nl80211_crit_protocol_start(struct sk_buff *skb, 10386 struct genl_info *info) 10387 { 10388 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10389 struct wireless_dev *wdev = info->user_ptr[1]; 10390 enum nl80211_crit_proto_id proto = NL80211_CRIT_PROTO_UNSPEC; 10391 u16 duration; 10392 int ret; 10393 10394 if (!rdev->ops->crit_proto_start) 10395 return -EOPNOTSUPP; 10396 10397 if (WARN_ON(!rdev->ops->crit_proto_stop)) 10398 return -EINVAL; 10399 10400 if (rdev->crit_proto_nlportid) 10401 return -EBUSY; 10402 10403 /* determine protocol if provided */ 10404 if (info->attrs[NL80211_ATTR_CRIT_PROT_ID]) 10405 proto = nla_get_u16(info->attrs[NL80211_ATTR_CRIT_PROT_ID]); 10406 10407 if (proto >= NUM_NL80211_CRIT_PROTO) 10408 return -EINVAL; 10409 10410 /* timeout must be provided */ 10411 if (!info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]) 10412 return -EINVAL; 10413 10414 duration = 10415 nla_get_u16(info->attrs[NL80211_ATTR_MAX_CRIT_PROT_DURATION]); 10416 10417 if (duration > NL80211_CRIT_PROTO_MAX_DURATION) 10418 return -ERANGE; 10419 10420 ret = rdev_crit_proto_start(rdev, wdev, proto, duration); 10421 if (!ret) 10422 rdev->crit_proto_nlportid = info->snd_portid; 10423 10424 return ret; 10425 } 10426 10427 static int nl80211_crit_protocol_stop(struct sk_buff *skb, 10428 struct genl_info *info) 10429 { 10430 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10431 struct wireless_dev *wdev = info->user_ptr[1]; 10432 10433 if (!rdev->ops->crit_proto_stop) 10434 return -EOPNOTSUPP; 10435 10436 if (rdev->crit_proto_nlportid) { 10437 rdev->crit_proto_nlportid = 0; 10438 rdev_crit_proto_stop(rdev, wdev); 10439 } 10440 return 0; 10441 } 10442 10443 static int nl80211_vendor_cmd(struct sk_buff *skb, struct genl_info *info) 10444 { 10445 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10446 struct wireless_dev *wdev = 10447 __cfg80211_wdev_from_attrs(genl_info_net(info), info->attrs); 10448 int i, err; 10449 u32 vid, subcmd; 10450 10451 if (!rdev->wiphy.vendor_commands) 10452 return -EOPNOTSUPP; 10453 10454 if (IS_ERR(wdev)) { 10455 err = PTR_ERR(wdev); 10456 if (err != -EINVAL) 10457 return err; 10458 wdev = NULL; 10459 } else if (wdev->wiphy != &rdev->wiphy) { 10460 return -EINVAL; 10461 } 10462 10463 if (!info->attrs[NL80211_ATTR_VENDOR_ID] || 10464 !info->attrs[NL80211_ATTR_VENDOR_SUBCMD]) 10465 return -EINVAL; 10466 10467 vid = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_ID]); 10468 subcmd = nla_get_u32(info->attrs[NL80211_ATTR_VENDOR_SUBCMD]); 10469 for (i = 0; i < rdev->wiphy.n_vendor_commands; i++) { 10470 const struct wiphy_vendor_command *vcmd; 10471 void *data = NULL; 10472 int len = 0; 10473 10474 vcmd = &rdev->wiphy.vendor_commands[i]; 10475 10476 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10477 continue; 10478 10479 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10480 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10481 if (!wdev) 10482 return -EINVAL; 10483 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10484 !wdev->netdev) 10485 return -EINVAL; 10486 10487 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10488 if (wdev->netdev && 10489 !netif_running(wdev->netdev)) 10490 return -ENETDOWN; 10491 if (!wdev->netdev && !wdev->p2p_started) 10492 return -ENETDOWN; 10493 } 10494 10495 if (!vcmd->doit) 10496 return -EOPNOTSUPP; 10497 } else { 10498 wdev = NULL; 10499 } 10500 10501 if (info->attrs[NL80211_ATTR_VENDOR_DATA]) { 10502 data = nla_data(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10503 len = nla_len(info->attrs[NL80211_ATTR_VENDOR_DATA]); 10504 } 10505 10506 rdev->cur_cmd_info = info; 10507 err = rdev->wiphy.vendor_commands[i].doit(&rdev->wiphy, wdev, 10508 data, len); 10509 rdev->cur_cmd_info = NULL; 10510 return err; 10511 } 10512 10513 return -EOPNOTSUPP; 10514 } 10515 10516 static int nl80211_prepare_vendor_dump(struct sk_buff *skb, 10517 struct netlink_callback *cb, 10518 struct cfg80211_registered_device **rdev, 10519 struct wireless_dev **wdev) 10520 { 10521 u32 vid, subcmd; 10522 unsigned int i; 10523 int vcmd_idx = -1; 10524 int err; 10525 void *data = NULL; 10526 unsigned int data_len = 0; 10527 10528 rtnl_lock(); 10529 10530 if (cb->args[0]) { 10531 /* subtract the 1 again here */ 10532 struct wiphy *wiphy = wiphy_idx_to_wiphy(cb->args[0] - 1); 10533 struct wireless_dev *tmp; 10534 10535 if (!wiphy) { 10536 err = -ENODEV; 10537 goto out_unlock; 10538 } 10539 *rdev = wiphy_to_rdev(wiphy); 10540 *wdev = NULL; 10541 10542 if (cb->args[1]) { 10543 list_for_each_entry(tmp, &wiphy->wdev_list, list) { 10544 if (tmp->identifier == cb->args[1] - 1) { 10545 *wdev = tmp; 10546 break; 10547 } 10548 } 10549 } 10550 10551 /* keep rtnl locked in successful case */ 10552 return 0; 10553 } 10554 10555 err = nlmsg_parse(cb->nlh, GENL_HDRLEN + nl80211_fam.hdrsize, 10556 nl80211_fam.attrbuf, nl80211_fam.maxattr, 10557 nl80211_policy); 10558 if (err) 10559 goto out_unlock; 10560 10561 if (!nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID] || 10562 !nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]) { 10563 err = -EINVAL; 10564 goto out_unlock; 10565 } 10566 10567 *wdev = __cfg80211_wdev_from_attrs(sock_net(skb->sk), 10568 nl80211_fam.attrbuf); 10569 if (IS_ERR(*wdev)) 10570 *wdev = NULL; 10571 10572 *rdev = __cfg80211_rdev_from_attrs(sock_net(skb->sk), 10573 nl80211_fam.attrbuf); 10574 if (IS_ERR(*rdev)) { 10575 err = PTR_ERR(*rdev); 10576 goto out_unlock; 10577 } 10578 10579 vid = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_ID]); 10580 subcmd = nla_get_u32(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_SUBCMD]); 10581 10582 for (i = 0; i < (*rdev)->wiphy.n_vendor_commands; i++) { 10583 const struct wiphy_vendor_command *vcmd; 10584 10585 vcmd = &(*rdev)->wiphy.vendor_commands[i]; 10586 10587 if (vcmd->info.vendor_id != vid || vcmd->info.subcmd != subcmd) 10588 continue; 10589 10590 if (!vcmd->dumpit) { 10591 err = -EOPNOTSUPP; 10592 goto out_unlock; 10593 } 10594 10595 vcmd_idx = i; 10596 break; 10597 } 10598 10599 if (vcmd_idx < 0) { 10600 err = -EOPNOTSUPP; 10601 goto out_unlock; 10602 } 10603 10604 if (nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]) { 10605 data = nla_data(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10606 data_len = nla_len(nl80211_fam.attrbuf[NL80211_ATTR_VENDOR_DATA]); 10607 } 10608 10609 /* 0 is the first index - add 1 to parse only once */ 10610 cb->args[0] = (*rdev)->wiphy_idx + 1; 10611 /* add 1 to know if it was NULL */ 10612 cb->args[1] = *wdev ? (*wdev)->identifier + 1 : 0; 10613 cb->args[2] = vcmd_idx; 10614 cb->args[3] = (unsigned long)data; 10615 cb->args[4] = data_len; 10616 10617 /* keep rtnl locked in successful case */ 10618 return 0; 10619 out_unlock: 10620 rtnl_unlock(); 10621 return err; 10622 } 10623 10624 static int nl80211_vendor_cmd_dump(struct sk_buff *skb, 10625 struct netlink_callback *cb) 10626 { 10627 struct cfg80211_registered_device *rdev; 10628 struct wireless_dev *wdev; 10629 unsigned int vcmd_idx; 10630 const struct wiphy_vendor_command *vcmd; 10631 void *data; 10632 int data_len; 10633 int err; 10634 struct nlattr *vendor_data; 10635 10636 err = nl80211_prepare_vendor_dump(skb, cb, &rdev, &wdev); 10637 if (err) 10638 return err; 10639 10640 vcmd_idx = cb->args[2]; 10641 data = (void *)cb->args[3]; 10642 data_len = cb->args[4]; 10643 vcmd = &rdev->wiphy.vendor_commands[vcmd_idx]; 10644 10645 if (vcmd->flags & (WIPHY_VENDOR_CMD_NEED_WDEV | 10646 WIPHY_VENDOR_CMD_NEED_NETDEV)) { 10647 if (!wdev) 10648 return -EINVAL; 10649 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_NETDEV && 10650 !wdev->netdev) 10651 return -EINVAL; 10652 10653 if (vcmd->flags & WIPHY_VENDOR_CMD_NEED_RUNNING) { 10654 if (wdev->netdev && 10655 !netif_running(wdev->netdev)) 10656 return -ENETDOWN; 10657 if (!wdev->netdev && !wdev->p2p_started) 10658 return -ENETDOWN; 10659 } 10660 } 10661 10662 while (1) { 10663 void *hdr = nl80211hdr_put(skb, NETLINK_CB(cb->skb).portid, 10664 cb->nlh->nlmsg_seq, NLM_F_MULTI, 10665 NL80211_CMD_VENDOR); 10666 if (!hdr) 10667 break; 10668 10669 if (nla_put_u32(skb, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 10670 (wdev && nla_put_u64_64bit(skb, NL80211_ATTR_WDEV, 10671 wdev_id(wdev), 10672 NL80211_ATTR_PAD))) { 10673 genlmsg_cancel(skb, hdr); 10674 break; 10675 } 10676 10677 vendor_data = nla_nest_start(skb, NL80211_ATTR_VENDOR_DATA); 10678 if (!vendor_data) { 10679 genlmsg_cancel(skb, hdr); 10680 break; 10681 } 10682 10683 err = vcmd->dumpit(&rdev->wiphy, wdev, skb, data, data_len, 10684 (unsigned long *)&cb->args[5]); 10685 nla_nest_end(skb, vendor_data); 10686 10687 if (err == -ENOBUFS || err == -ENOENT) { 10688 genlmsg_cancel(skb, hdr); 10689 break; 10690 } else if (err) { 10691 genlmsg_cancel(skb, hdr); 10692 goto out; 10693 } 10694 10695 genlmsg_end(skb, hdr); 10696 } 10697 10698 err = skb->len; 10699 out: 10700 rtnl_unlock(); 10701 return err; 10702 } 10703 10704 struct sk_buff *__cfg80211_alloc_reply_skb(struct wiphy *wiphy, 10705 enum nl80211_commands cmd, 10706 enum nl80211_attrs attr, 10707 int approxlen) 10708 { 10709 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 10710 10711 if (WARN_ON(!rdev->cur_cmd_info)) 10712 return NULL; 10713 10714 return __cfg80211_alloc_vendor_skb(rdev, NULL, approxlen, 10715 rdev->cur_cmd_info->snd_portid, 10716 rdev->cur_cmd_info->snd_seq, 10717 cmd, attr, NULL, GFP_KERNEL); 10718 } 10719 EXPORT_SYMBOL(__cfg80211_alloc_reply_skb); 10720 10721 int cfg80211_vendor_cmd_reply(struct sk_buff *skb) 10722 { 10723 struct cfg80211_registered_device *rdev = ((void **)skb->cb)[0]; 10724 void *hdr = ((void **)skb->cb)[1]; 10725 struct nlattr *data = ((void **)skb->cb)[2]; 10726 10727 /* clear CB data for netlink core to own from now on */ 10728 memset(skb->cb, 0, sizeof(skb->cb)); 10729 10730 if (WARN_ON(!rdev->cur_cmd_info)) { 10731 kfree_skb(skb); 10732 return -EINVAL; 10733 } 10734 10735 nla_nest_end(skb, data); 10736 genlmsg_end(skb, hdr); 10737 return genlmsg_reply(skb, rdev->cur_cmd_info); 10738 } 10739 EXPORT_SYMBOL_GPL(cfg80211_vendor_cmd_reply); 10740 10741 static int nl80211_set_qos_map(struct sk_buff *skb, 10742 struct genl_info *info) 10743 { 10744 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10745 struct cfg80211_qos_map *qos_map = NULL; 10746 struct net_device *dev = info->user_ptr[1]; 10747 u8 *pos, len, num_des, des_len, des; 10748 int ret; 10749 10750 if (!rdev->ops->set_qos_map) 10751 return -EOPNOTSUPP; 10752 10753 if (info->attrs[NL80211_ATTR_QOS_MAP]) { 10754 pos = nla_data(info->attrs[NL80211_ATTR_QOS_MAP]); 10755 len = nla_len(info->attrs[NL80211_ATTR_QOS_MAP]); 10756 10757 if (len % 2 || len < IEEE80211_QOS_MAP_LEN_MIN || 10758 len > IEEE80211_QOS_MAP_LEN_MAX) 10759 return -EINVAL; 10760 10761 qos_map = kzalloc(sizeof(struct cfg80211_qos_map), GFP_KERNEL); 10762 if (!qos_map) 10763 return -ENOMEM; 10764 10765 num_des = (len - IEEE80211_QOS_MAP_LEN_MIN) >> 1; 10766 if (num_des) { 10767 des_len = num_des * 10768 sizeof(struct cfg80211_dscp_exception); 10769 memcpy(qos_map->dscp_exception, pos, des_len); 10770 qos_map->num_des = num_des; 10771 for (des = 0; des < num_des; des++) { 10772 if (qos_map->dscp_exception[des].up > 7) { 10773 kfree(qos_map); 10774 return -EINVAL; 10775 } 10776 } 10777 pos += des_len; 10778 } 10779 memcpy(qos_map->up, pos, IEEE80211_QOS_MAP_LEN_MIN); 10780 } 10781 10782 wdev_lock(dev->ieee80211_ptr); 10783 ret = nl80211_key_allowed(dev->ieee80211_ptr); 10784 if (!ret) 10785 ret = rdev_set_qos_map(rdev, dev, qos_map); 10786 wdev_unlock(dev->ieee80211_ptr); 10787 10788 kfree(qos_map); 10789 return ret; 10790 } 10791 10792 static int nl80211_add_tx_ts(struct sk_buff *skb, struct genl_info *info) 10793 { 10794 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10795 struct net_device *dev = info->user_ptr[1]; 10796 struct wireless_dev *wdev = dev->ieee80211_ptr; 10797 const u8 *peer; 10798 u8 tsid, up; 10799 u16 admitted_time = 0; 10800 int err; 10801 10802 if (!(rdev->wiphy.features & NL80211_FEATURE_SUPPORTS_WMM_ADMISSION)) 10803 return -EOPNOTSUPP; 10804 10805 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC] || 10806 !info->attrs[NL80211_ATTR_USER_PRIO]) 10807 return -EINVAL; 10808 10809 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10810 if (tsid >= IEEE80211_NUM_TIDS) 10811 return -EINVAL; 10812 10813 up = nla_get_u8(info->attrs[NL80211_ATTR_USER_PRIO]); 10814 if (up >= IEEE80211_NUM_UPS) 10815 return -EINVAL; 10816 10817 /* WMM uses TIDs 0-7 even for TSPEC */ 10818 if (tsid >= IEEE80211_FIRST_TSPEC_TSID) { 10819 /* TODO: handle 802.11 TSPEC/admission control 10820 * need more attributes for that (e.g. BA session requirement); 10821 * change the WMM adminssion test above to allow both then 10822 */ 10823 return -EINVAL; 10824 } 10825 10826 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10827 10828 if (info->attrs[NL80211_ATTR_ADMITTED_TIME]) { 10829 admitted_time = 10830 nla_get_u16(info->attrs[NL80211_ATTR_ADMITTED_TIME]); 10831 if (!admitted_time) 10832 return -EINVAL; 10833 } 10834 10835 wdev_lock(wdev); 10836 switch (wdev->iftype) { 10837 case NL80211_IFTYPE_STATION: 10838 case NL80211_IFTYPE_P2P_CLIENT: 10839 if (wdev->current_bss) 10840 break; 10841 err = -ENOTCONN; 10842 goto out; 10843 default: 10844 err = -EOPNOTSUPP; 10845 goto out; 10846 } 10847 10848 err = rdev_add_tx_ts(rdev, dev, tsid, peer, up, admitted_time); 10849 10850 out: 10851 wdev_unlock(wdev); 10852 return err; 10853 } 10854 10855 static int nl80211_del_tx_ts(struct sk_buff *skb, struct genl_info *info) 10856 { 10857 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10858 struct net_device *dev = info->user_ptr[1]; 10859 struct wireless_dev *wdev = dev->ieee80211_ptr; 10860 const u8 *peer; 10861 u8 tsid; 10862 int err; 10863 10864 if (!info->attrs[NL80211_ATTR_TSID] || !info->attrs[NL80211_ATTR_MAC]) 10865 return -EINVAL; 10866 10867 tsid = nla_get_u8(info->attrs[NL80211_ATTR_TSID]); 10868 peer = nla_data(info->attrs[NL80211_ATTR_MAC]); 10869 10870 wdev_lock(wdev); 10871 err = rdev_del_tx_ts(rdev, dev, tsid, peer); 10872 wdev_unlock(wdev); 10873 10874 return err; 10875 } 10876 10877 static int nl80211_tdls_channel_switch(struct sk_buff *skb, 10878 struct genl_info *info) 10879 { 10880 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10881 struct net_device *dev = info->user_ptr[1]; 10882 struct wireless_dev *wdev = dev->ieee80211_ptr; 10883 struct cfg80211_chan_def chandef = {}; 10884 const u8 *addr; 10885 u8 oper_class; 10886 int err; 10887 10888 if (!rdev->ops->tdls_channel_switch || 10889 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10890 return -EOPNOTSUPP; 10891 10892 switch (dev->ieee80211_ptr->iftype) { 10893 case NL80211_IFTYPE_STATION: 10894 case NL80211_IFTYPE_P2P_CLIENT: 10895 break; 10896 default: 10897 return -EOPNOTSUPP; 10898 } 10899 10900 if (!info->attrs[NL80211_ATTR_MAC] || 10901 !info->attrs[NL80211_ATTR_OPER_CLASS]) 10902 return -EINVAL; 10903 10904 err = nl80211_parse_chandef(rdev, info, &chandef); 10905 if (err) 10906 return err; 10907 10908 /* 10909 * Don't allow wide channels on the 2.4Ghz band, as per IEEE802.11-2012 10910 * section 10.22.6.2.1. Disallow 5/10Mhz channels as well for now, the 10911 * specification is not defined for them. 10912 */ 10913 if (chandef.chan->band == NL80211_BAND_2GHZ && 10914 chandef.width != NL80211_CHAN_WIDTH_20_NOHT && 10915 chandef.width != NL80211_CHAN_WIDTH_20) 10916 return -EINVAL; 10917 10918 /* we will be active on the TDLS link */ 10919 if (!cfg80211_reg_can_beacon_relax(&rdev->wiphy, &chandef, 10920 wdev->iftype)) 10921 return -EINVAL; 10922 10923 /* don't allow switching to DFS channels */ 10924 if (cfg80211_chandef_dfs_required(wdev->wiphy, &chandef, wdev->iftype)) 10925 return -EINVAL; 10926 10927 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10928 oper_class = nla_get_u8(info->attrs[NL80211_ATTR_OPER_CLASS]); 10929 10930 wdev_lock(wdev); 10931 err = rdev_tdls_channel_switch(rdev, dev, addr, oper_class, &chandef); 10932 wdev_unlock(wdev); 10933 10934 return err; 10935 } 10936 10937 static int nl80211_tdls_cancel_channel_switch(struct sk_buff *skb, 10938 struct genl_info *info) 10939 { 10940 struct cfg80211_registered_device *rdev = info->user_ptr[0]; 10941 struct net_device *dev = info->user_ptr[1]; 10942 struct wireless_dev *wdev = dev->ieee80211_ptr; 10943 const u8 *addr; 10944 10945 if (!rdev->ops->tdls_channel_switch || 10946 !rdev->ops->tdls_cancel_channel_switch || 10947 !(rdev->wiphy.features & NL80211_FEATURE_TDLS_CHANNEL_SWITCH)) 10948 return -EOPNOTSUPP; 10949 10950 switch (dev->ieee80211_ptr->iftype) { 10951 case NL80211_IFTYPE_STATION: 10952 case NL80211_IFTYPE_P2P_CLIENT: 10953 break; 10954 default: 10955 return -EOPNOTSUPP; 10956 } 10957 10958 if (!info->attrs[NL80211_ATTR_MAC]) 10959 return -EINVAL; 10960 10961 addr = nla_data(info->attrs[NL80211_ATTR_MAC]); 10962 10963 wdev_lock(wdev); 10964 rdev_tdls_cancel_channel_switch(rdev, dev, addr); 10965 wdev_unlock(wdev); 10966 10967 return 0; 10968 } 10969 10970 #define NL80211_FLAG_NEED_WIPHY 0x01 10971 #define NL80211_FLAG_NEED_NETDEV 0x02 10972 #define NL80211_FLAG_NEED_RTNL 0x04 10973 #define NL80211_FLAG_CHECK_NETDEV_UP 0x08 10974 #define NL80211_FLAG_NEED_NETDEV_UP (NL80211_FLAG_NEED_NETDEV |\ 10975 NL80211_FLAG_CHECK_NETDEV_UP) 10976 #define NL80211_FLAG_NEED_WDEV 0x10 10977 /* If a netdev is associated, it must be UP, P2P must be started */ 10978 #define NL80211_FLAG_NEED_WDEV_UP (NL80211_FLAG_NEED_WDEV |\ 10979 NL80211_FLAG_CHECK_NETDEV_UP) 10980 #define NL80211_FLAG_CLEAR_SKB 0x20 10981 10982 static int nl80211_pre_doit(const struct genl_ops *ops, struct sk_buff *skb, 10983 struct genl_info *info) 10984 { 10985 struct cfg80211_registered_device *rdev; 10986 struct wireless_dev *wdev; 10987 struct net_device *dev; 10988 bool rtnl = ops->internal_flags & NL80211_FLAG_NEED_RTNL; 10989 10990 if (rtnl) 10991 rtnl_lock(); 10992 10993 if (ops->internal_flags & NL80211_FLAG_NEED_WIPHY) { 10994 rdev = cfg80211_get_dev_from_info(genl_info_net(info), info); 10995 if (IS_ERR(rdev)) { 10996 if (rtnl) 10997 rtnl_unlock(); 10998 return PTR_ERR(rdev); 10999 } 11000 info->user_ptr[0] = rdev; 11001 } else if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV || 11002 ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 11003 ASSERT_RTNL(); 11004 11005 wdev = __cfg80211_wdev_from_attrs(genl_info_net(info), 11006 info->attrs); 11007 if (IS_ERR(wdev)) { 11008 if (rtnl) 11009 rtnl_unlock(); 11010 return PTR_ERR(wdev); 11011 } 11012 11013 dev = wdev->netdev; 11014 rdev = wiphy_to_rdev(wdev->wiphy); 11015 11016 if (ops->internal_flags & NL80211_FLAG_NEED_NETDEV) { 11017 if (!dev) { 11018 if (rtnl) 11019 rtnl_unlock(); 11020 return -EINVAL; 11021 } 11022 11023 info->user_ptr[1] = dev; 11024 } else { 11025 info->user_ptr[1] = wdev; 11026 } 11027 11028 if (dev) { 11029 if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP && 11030 !netif_running(dev)) { 11031 if (rtnl) 11032 rtnl_unlock(); 11033 return -ENETDOWN; 11034 } 11035 11036 dev_hold(dev); 11037 } else if (ops->internal_flags & NL80211_FLAG_CHECK_NETDEV_UP) { 11038 if (!wdev->p2p_started) { 11039 if (rtnl) 11040 rtnl_unlock(); 11041 return -ENETDOWN; 11042 } 11043 } 11044 11045 info->user_ptr[0] = rdev; 11046 } 11047 11048 return 0; 11049 } 11050 11051 static void nl80211_post_doit(const struct genl_ops *ops, struct sk_buff *skb, 11052 struct genl_info *info) 11053 { 11054 if (info->user_ptr[1]) { 11055 if (ops->internal_flags & NL80211_FLAG_NEED_WDEV) { 11056 struct wireless_dev *wdev = info->user_ptr[1]; 11057 11058 if (wdev->netdev) 11059 dev_put(wdev->netdev); 11060 } else { 11061 dev_put(info->user_ptr[1]); 11062 } 11063 } 11064 11065 if (ops->internal_flags & NL80211_FLAG_NEED_RTNL) 11066 rtnl_unlock(); 11067 11068 /* If needed, clear the netlink message payload from the SKB 11069 * as it might contain key data that shouldn't stick around on 11070 * the heap after the SKB is freed. The netlink message header 11071 * is still needed for further processing, so leave it intact. 11072 */ 11073 if (ops->internal_flags & NL80211_FLAG_CLEAR_SKB) { 11074 struct nlmsghdr *nlh = nlmsg_hdr(skb); 11075 11076 memset(nlmsg_data(nlh), 0, nlmsg_len(nlh)); 11077 } 11078 } 11079 11080 static const struct genl_ops nl80211_ops[] = { 11081 { 11082 .cmd = NL80211_CMD_GET_WIPHY, 11083 .doit = nl80211_get_wiphy, 11084 .dumpit = nl80211_dump_wiphy, 11085 .done = nl80211_dump_wiphy_done, 11086 .policy = nl80211_policy, 11087 /* can be retrieved by unprivileged users */ 11088 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11089 NL80211_FLAG_NEED_RTNL, 11090 }, 11091 { 11092 .cmd = NL80211_CMD_SET_WIPHY, 11093 .doit = nl80211_set_wiphy, 11094 .policy = nl80211_policy, 11095 .flags = GENL_UNS_ADMIN_PERM, 11096 .internal_flags = NL80211_FLAG_NEED_RTNL, 11097 }, 11098 { 11099 .cmd = NL80211_CMD_GET_INTERFACE, 11100 .doit = nl80211_get_interface, 11101 .dumpit = nl80211_dump_interface, 11102 .policy = nl80211_policy, 11103 /* can be retrieved by unprivileged users */ 11104 .internal_flags = NL80211_FLAG_NEED_WDEV | 11105 NL80211_FLAG_NEED_RTNL, 11106 }, 11107 { 11108 .cmd = NL80211_CMD_SET_INTERFACE, 11109 .doit = nl80211_set_interface, 11110 .policy = nl80211_policy, 11111 .flags = GENL_UNS_ADMIN_PERM, 11112 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11113 NL80211_FLAG_NEED_RTNL, 11114 }, 11115 { 11116 .cmd = NL80211_CMD_NEW_INTERFACE, 11117 .doit = nl80211_new_interface, 11118 .policy = nl80211_policy, 11119 .flags = GENL_UNS_ADMIN_PERM, 11120 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11121 NL80211_FLAG_NEED_RTNL, 11122 }, 11123 { 11124 .cmd = NL80211_CMD_DEL_INTERFACE, 11125 .doit = nl80211_del_interface, 11126 .policy = nl80211_policy, 11127 .flags = GENL_UNS_ADMIN_PERM, 11128 .internal_flags = NL80211_FLAG_NEED_WDEV | 11129 NL80211_FLAG_NEED_RTNL, 11130 }, 11131 { 11132 .cmd = NL80211_CMD_GET_KEY, 11133 .doit = nl80211_get_key, 11134 .policy = nl80211_policy, 11135 .flags = GENL_UNS_ADMIN_PERM, 11136 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11137 NL80211_FLAG_NEED_RTNL, 11138 }, 11139 { 11140 .cmd = NL80211_CMD_SET_KEY, 11141 .doit = nl80211_set_key, 11142 .policy = nl80211_policy, 11143 .flags = GENL_UNS_ADMIN_PERM, 11144 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11145 NL80211_FLAG_NEED_RTNL | 11146 NL80211_FLAG_CLEAR_SKB, 11147 }, 11148 { 11149 .cmd = NL80211_CMD_NEW_KEY, 11150 .doit = nl80211_new_key, 11151 .policy = nl80211_policy, 11152 .flags = GENL_UNS_ADMIN_PERM, 11153 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11154 NL80211_FLAG_NEED_RTNL | 11155 NL80211_FLAG_CLEAR_SKB, 11156 }, 11157 { 11158 .cmd = NL80211_CMD_DEL_KEY, 11159 .doit = nl80211_del_key, 11160 .policy = nl80211_policy, 11161 .flags = GENL_UNS_ADMIN_PERM, 11162 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11163 NL80211_FLAG_NEED_RTNL, 11164 }, 11165 { 11166 .cmd = NL80211_CMD_SET_BEACON, 11167 .policy = nl80211_policy, 11168 .flags = GENL_UNS_ADMIN_PERM, 11169 .doit = nl80211_set_beacon, 11170 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11171 NL80211_FLAG_NEED_RTNL, 11172 }, 11173 { 11174 .cmd = NL80211_CMD_START_AP, 11175 .policy = nl80211_policy, 11176 .flags = GENL_UNS_ADMIN_PERM, 11177 .doit = nl80211_start_ap, 11178 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11179 NL80211_FLAG_NEED_RTNL, 11180 }, 11181 { 11182 .cmd = NL80211_CMD_STOP_AP, 11183 .policy = nl80211_policy, 11184 .flags = GENL_UNS_ADMIN_PERM, 11185 .doit = nl80211_stop_ap, 11186 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11187 NL80211_FLAG_NEED_RTNL, 11188 }, 11189 { 11190 .cmd = NL80211_CMD_GET_STATION, 11191 .doit = nl80211_get_station, 11192 .dumpit = nl80211_dump_station, 11193 .policy = nl80211_policy, 11194 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11195 NL80211_FLAG_NEED_RTNL, 11196 }, 11197 { 11198 .cmd = NL80211_CMD_SET_STATION, 11199 .doit = nl80211_set_station, 11200 .policy = nl80211_policy, 11201 .flags = GENL_UNS_ADMIN_PERM, 11202 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11203 NL80211_FLAG_NEED_RTNL, 11204 }, 11205 { 11206 .cmd = NL80211_CMD_NEW_STATION, 11207 .doit = nl80211_new_station, 11208 .policy = nl80211_policy, 11209 .flags = GENL_UNS_ADMIN_PERM, 11210 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11211 NL80211_FLAG_NEED_RTNL, 11212 }, 11213 { 11214 .cmd = NL80211_CMD_DEL_STATION, 11215 .doit = nl80211_del_station, 11216 .policy = nl80211_policy, 11217 .flags = GENL_UNS_ADMIN_PERM, 11218 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11219 NL80211_FLAG_NEED_RTNL, 11220 }, 11221 { 11222 .cmd = NL80211_CMD_GET_MPATH, 11223 .doit = nl80211_get_mpath, 11224 .dumpit = nl80211_dump_mpath, 11225 .policy = nl80211_policy, 11226 .flags = GENL_UNS_ADMIN_PERM, 11227 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11228 NL80211_FLAG_NEED_RTNL, 11229 }, 11230 { 11231 .cmd = NL80211_CMD_GET_MPP, 11232 .doit = nl80211_get_mpp, 11233 .dumpit = nl80211_dump_mpp, 11234 .policy = nl80211_policy, 11235 .flags = GENL_UNS_ADMIN_PERM, 11236 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11237 NL80211_FLAG_NEED_RTNL, 11238 }, 11239 { 11240 .cmd = NL80211_CMD_SET_MPATH, 11241 .doit = nl80211_set_mpath, 11242 .policy = nl80211_policy, 11243 .flags = GENL_UNS_ADMIN_PERM, 11244 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11245 NL80211_FLAG_NEED_RTNL, 11246 }, 11247 { 11248 .cmd = NL80211_CMD_NEW_MPATH, 11249 .doit = nl80211_new_mpath, 11250 .policy = nl80211_policy, 11251 .flags = GENL_UNS_ADMIN_PERM, 11252 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11253 NL80211_FLAG_NEED_RTNL, 11254 }, 11255 { 11256 .cmd = NL80211_CMD_DEL_MPATH, 11257 .doit = nl80211_del_mpath, 11258 .policy = nl80211_policy, 11259 .flags = GENL_UNS_ADMIN_PERM, 11260 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11261 NL80211_FLAG_NEED_RTNL, 11262 }, 11263 { 11264 .cmd = NL80211_CMD_SET_BSS, 11265 .doit = nl80211_set_bss, 11266 .policy = nl80211_policy, 11267 .flags = GENL_UNS_ADMIN_PERM, 11268 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11269 NL80211_FLAG_NEED_RTNL, 11270 }, 11271 { 11272 .cmd = NL80211_CMD_GET_REG, 11273 .doit = nl80211_get_reg_do, 11274 .dumpit = nl80211_get_reg_dump, 11275 .policy = nl80211_policy, 11276 .internal_flags = NL80211_FLAG_NEED_RTNL, 11277 /* can be retrieved by unprivileged users */ 11278 }, 11279 #ifdef CONFIG_CFG80211_CRDA_SUPPORT 11280 { 11281 .cmd = NL80211_CMD_SET_REG, 11282 .doit = nl80211_set_reg, 11283 .policy = nl80211_policy, 11284 .flags = GENL_ADMIN_PERM, 11285 .internal_flags = NL80211_FLAG_NEED_RTNL, 11286 }, 11287 #endif 11288 { 11289 .cmd = NL80211_CMD_REQ_SET_REG, 11290 .doit = nl80211_req_set_reg, 11291 .policy = nl80211_policy, 11292 .flags = GENL_ADMIN_PERM, 11293 }, 11294 { 11295 .cmd = NL80211_CMD_GET_MESH_CONFIG, 11296 .doit = nl80211_get_mesh_config, 11297 .policy = nl80211_policy, 11298 /* can be retrieved by unprivileged users */ 11299 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11300 NL80211_FLAG_NEED_RTNL, 11301 }, 11302 { 11303 .cmd = NL80211_CMD_SET_MESH_CONFIG, 11304 .doit = nl80211_update_mesh_config, 11305 .policy = nl80211_policy, 11306 .flags = GENL_UNS_ADMIN_PERM, 11307 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11308 NL80211_FLAG_NEED_RTNL, 11309 }, 11310 { 11311 .cmd = NL80211_CMD_TRIGGER_SCAN, 11312 .doit = nl80211_trigger_scan, 11313 .policy = nl80211_policy, 11314 .flags = GENL_UNS_ADMIN_PERM, 11315 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11316 NL80211_FLAG_NEED_RTNL, 11317 }, 11318 { 11319 .cmd = NL80211_CMD_ABORT_SCAN, 11320 .doit = nl80211_abort_scan, 11321 .policy = nl80211_policy, 11322 .flags = GENL_UNS_ADMIN_PERM, 11323 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11324 NL80211_FLAG_NEED_RTNL, 11325 }, 11326 { 11327 .cmd = NL80211_CMD_GET_SCAN, 11328 .policy = nl80211_policy, 11329 .dumpit = nl80211_dump_scan, 11330 }, 11331 { 11332 .cmd = NL80211_CMD_START_SCHED_SCAN, 11333 .doit = nl80211_start_sched_scan, 11334 .policy = nl80211_policy, 11335 .flags = GENL_UNS_ADMIN_PERM, 11336 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11337 NL80211_FLAG_NEED_RTNL, 11338 }, 11339 { 11340 .cmd = NL80211_CMD_STOP_SCHED_SCAN, 11341 .doit = nl80211_stop_sched_scan, 11342 .policy = nl80211_policy, 11343 .flags = GENL_UNS_ADMIN_PERM, 11344 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11345 NL80211_FLAG_NEED_RTNL, 11346 }, 11347 { 11348 .cmd = NL80211_CMD_AUTHENTICATE, 11349 .doit = nl80211_authenticate, 11350 .policy = nl80211_policy, 11351 .flags = GENL_UNS_ADMIN_PERM, 11352 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11353 NL80211_FLAG_NEED_RTNL | 11354 NL80211_FLAG_CLEAR_SKB, 11355 }, 11356 { 11357 .cmd = NL80211_CMD_ASSOCIATE, 11358 .doit = nl80211_associate, 11359 .policy = nl80211_policy, 11360 .flags = GENL_UNS_ADMIN_PERM, 11361 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11362 NL80211_FLAG_NEED_RTNL, 11363 }, 11364 { 11365 .cmd = NL80211_CMD_DEAUTHENTICATE, 11366 .doit = nl80211_deauthenticate, 11367 .policy = nl80211_policy, 11368 .flags = GENL_UNS_ADMIN_PERM, 11369 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11370 NL80211_FLAG_NEED_RTNL, 11371 }, 11372 { 11373 .cmd = NL80211_CMD_DISASSOCIATE, 11374 .doit = nl80211_disassociate, 11375 .policy = nl80211_policy, 11376 .flags = GENL_UNS_ADMIN_PERM, 11377 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11378 NL80211_FLAG_NEED_RTNL, 11379 }, 11380 { 11381 .cmd = NL80211_CMD_JOIN_IBSS, 11382 .doit = nl80211_join_ibss, 11383 .policy = nl80211_policy, 11384 .flags = GENL_UNS_ADMIN_PERM, 11385 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11386 NL80211_FLAG_NEED_RTNL, 11387 }, 11388 { 11389 .cmd = NL80211_CMD_LEAVE_IBSS, 11390 .doit = nl80211_leave_ibss, 11391 .policy = nl80211_policy, 11392 .flags = GENL_UNS_ADMIN_PERM, 11393 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11394 NL80211_FLAG_NEED_RTNL, 11395 }, 11396 #ifdef CONFIG_NL80211_TESTMODE 11397 { 11398 .cmd = NL80211_CMD_TESTMODE, 11399 .doit = nl80211_testmode_do, 11400 .dumpit = nl80211_testmode_dump, 11401 .policy = nl80211_policy, 11402 .flags = GENL_UNS_ADMIN_PERM, 11403 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11404 NL80211_FLAG_NEED_RTNL, 11405 }, 11406 #endif 11407 { 11408 .cmd = NL80211_CMD_CONNECT, 11409 .doit = nl80211_connect, 11410 .policy = nl80211_policy, 11411 .flags = GENL_UNS_ADMIN_PERM, 11412 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11413 NL80211_FLAG_NEED_RTNL, 11414 }, 11415 { 11416 .cmd = NL80211_CMD_DISCONNECT, 11417 .doit = nl80211_disconnect, 11418 .policy = nl80211_policy, 11419 .flags = GENL_UNS_ADMIN_PERM, 11420 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11421 NL80211_FLAG_NEED_RTNL, 11422 }, 11423 { 11424 .cmd = NL80211_CMD_SET_WIPHY_NETNS, 11425 .doit = nl80211_wiphy_netns, 11426 .policy = nl80211_policy, 11427 .flags = GENL_UNS_ADMIN_PERM, 11428 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11429 NL80211_FLAG_NEED_RTNL, 11430 }, 11431 { 11432 .cmd = NL80211_CMD_GET_SURVEY, 11433 .policy = nl80211_policy, 11434 .dumpit = nl80211_dump_survey, 11435 }, 11436 { 11437 .cmd = NL80211_CMD_SET_PMKSA, 11438 .doit = nl80211_setdel_pmksa, 11439 .policy = nl80211_policy, 11440 .flags = GENL_UNS_ADMIN_PERM, 11441 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11442 NL80211_FLAG_NEED_RTNL, 11443 }, 11444 { 11445 .cmd = NL80211_CMD_DEL_PMKSA, 11446 .doit = nl80211_setdel_pmksa, 11447 .policy = nl80211_policy, 11448 .flags = GENL_UNS_ADMIN_PERM, 11449 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11450 NL80211_FLAG_NEED_RTNL, 11451 }, 11452 { 11453 .cmd = NL80211_CMD_FLUSH_PMKSA, 11454 .doit = nl80211_flush_pmksa, 11455 .policy = nl80211_policy, 11456 .flags = GENL_UNS_ADMIN_PERM, 11457 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11458 NL80211_FLAG_NEED_RTNL, 11459 }, 11460 { 11461 .cmd = NL80211_CMD_REMAIN_ON_CHANNEL, 11462 .doit = nl80211_remain_on_channel, 11463 .policy = nl80211_policy, 11464 .flags = GENL_UNS_ADMIN_PERM, 11465 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11466 NL80211_FLAG_NEED_RTNL, 11467 }, 11468 { 11469 .cmd = NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 11470 .doit = nl80211_cancel_remain_on_channel, 11471 .policy = nl80211_policy, 11472 .flags = GENL_UNS_ADMIN_PERM, 11473 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11474 NL80211_FLAG_NEED_RTNL, 11475 }, 11476 { 11477 .cmd = NL80211_CMD_SET_TX_BITRATE_MASK, 11478 .doit = nl80211_set_tx_bitrate_mask, 11479 .policy = nl80211_policy, 11480 .flags = GENL_UNS_ADMIN_PERM, 11481 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11482 NL80211_FLAG_NEED_RTNL, 11483 }, 11484 { 11485 .cmd = NL80211_CMD_REGISTER_FRAME, 11486 .doit = nl80211_register_mgmt, 11487 .policy = nl80211_policy, 11488 .flags = GENL_UNS_ADMIN_PERM, 11489 .internal_flags = NL80211_FLAG_NEED_WDEV | 11490 NL80211_FLAG_NEED_RTNL, 11491 }, 11492 { 11493 .cmd = NL80211_CMD_FRAME, 11494 .doit = nl80211_tx_mgmt, 11495 .policy = nl80211_policy, 11496 .flags = GENL_UNS_ADMIN_PERM, 11497 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11498 NL80211_FLAG_NEED_RTNL, 11499 }, 11500 { 11501 .cmd = NL80211_CMD_FRAME_WAIT_CANCEL, 11502 .doit = nl80211_tx_mgmt_cancel_wait, 11503 .policy = nl80211_policy, 11504 .flags = GENL_UNS_ADMIN_PERM, 11505 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11506 NL80211_FLAG_NEED_RTNL, 11507 }, 11508 { 11509 .cmd = NL80211_CMD_SET_POWER_SAVE, 11510 .doit = nl80211_set_power_save, 11511 .policy = nl80211_policy, 11512 .flags = GENL_UNS_ADMIN_PERM, 11513 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11514 NL80211_FLAG_NEED_RTNL, 11515 }, 11516 { 11517 .cmd = NL80211_CMD_GET_POWER_SAVE, 11518 .doit = nl80211_get_power_save, 11519 .policy = nl80211_policy, 11520 /* can be retrieved by unprivileged users */ 11521 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11522 NL80211_FLAG_NEED_RTNL, 11523 }, 11524 { 11525 .cmd = NL80211_CMD_SET_CQM, 11526 .doit = nl80211_set_cqm, 11527 .policy = nl80211_policy, 11528 .flags = GENL_UNS_ADMIN_PERM, 11529 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11530 NL80211_FLAG_NEED_RTNL, 11531 }, 11532 { 11533 .cmd = NL80211_CMD_SET_CHANNEL, 11534 .doit = nl80211_set_channel, 11535 .policy = nl80211_policy, 11536 .flags = GENL_UNS_ADMIN_PERM, 11537 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11538 NL80211_FLAG_NEED_RTNL, 11539 }, 11540 { 11541 .cmd = NL80211_CMD_SET_WDS_PEER, 11542 .doit = nl80211_set_wds_peer, 11543 .policy = nl80211_policy, 11544 .flags = GENL_UNS_ADMIN_PERM, 11545 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11546 NL80211_FLAG_NEED_RTNL, 11547 }, 11548 { 11549 .cmd = NL80211_CMD_JOIN_MESH, 11550 .doit = nl80211_join_mesh, 11551 .policy = nl80211_policy, 11552 .flags = GENL_UNS_ADMIN_PERM, 11553 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11554 NL80211_FLAG_NEED_RTNL, 11555 }, 11556 { 11557 .cmd = NL80211_CMD_LEAVE_MESH, 11558 .doit = nl80211_leave_mesh, 11559 .policy = nl80211_policy, 11560 .flags = GENL_UNS_ADMIN_PERM, 11561 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11562 NL80211_FLAG_NEED_RTNL, 11563 }, 11564 { 11565 .cmd = NL80211_CMD_JOIN_OCB, 11566 .doit = nl80211_join_ocb, 11567 .policy = nl80211_policy, 11568 .flags = GENL_UNS_ADMIN_PERM, 11569 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11570 NL80211_FLAG_NEED_RTNL, 11571 }, 11572 { 11573 .cmd = NL80211_CMD_LEAVE_OCB, 11574 .doit = nl80211_leave_ocb, 11575 .policy = nl80211_policy, 11576 .flags = GENL_UNS_ADMIN_PERM, 11577 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11578 NL80211_FLAG_NEED_RTNL, 11579 }, 11580 #ifdef CONFIG_PM 11581 { 11582 .cmd = NL80211_CMD_GET_WOWLAN, 11583 .doit = nl80211_get_wowlan, 11584 .policy = nl80211_policy, 11585 /* can be retrieved by unprivileged users */ 11586 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11587 NL80211_FLAG_NEED_RTNL, 11588 }, 11589 { 11590 .cmd = NL80211_CMD_SET_WOWLAN, 11591 .doit = nl80211_set_wowlan, 11592 .policy = nl80211_policy, 11593 .flags = GENL_UNS_ADMIN_PERM, 11594 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11595 NL80211_FLAG_NEED_RTNL, 11596 }, 11597 #endif 11598 { 11599 .cmd = NL80211_CMD_SET_REKEY_OFFLOAD, 11600 .doit = nl80211_set_rekey_data, 11601 .policy = nl80211_policy, 11602 .flags = GENL_UNS_ADMIN_PERM, 11603 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11604 NL80211_FLAG_NEED_RTNL | 11605 NL80211_FLAG_CLEAR_SKB, 11606 }, 11607 { 11608 .cmd = NL80211_CMD_TDLS_MGMT, 11609 .doit = nl80211_tdls_mgmt, 11610 .policy = nl80211_policy, 11611 .flags = GENL_UNS_ADMIN_PERM, 11612 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11613 NL80211_FLAG_NEED_RTNL, 11614 }, 11615 { 11616 .cmd = NL80211_CMD_TDLS_OPER, 11617 .doit = nl80211_tdls_oper, 11618 .policy = nl80211_policy, 11619 .flags = GENL_UNS_ADMIN_PERM, 11620 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11621 NL80211_FLAG_NEED_RTNL, 11622 }, 11623 { 11624 .cmd = NL80211_CMD_UNEXPECTED_FRAME, 11625 .doit = nl80211_register_unexpected_frame, 11626 .policy = nl80211_policy, 11627 .flags = GENL_UNS_ADMIN_PERM, 11628 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11629 NL80211_FLAG_NEED_RTNL, 11630 }, 11631 { 11632 .cmd = NL80211_CMD_PROBE_CLIENT, 11633 .doit = nl80211_probe_client, 11634 .policy = nl80211_policy, 11635 .flags = GENL_UNS_ADMIN_PERM, 11636 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11637 NL80211_FLAG_NEED_RTNL, 11638 }, 11639 { 11640 .cmd = NL80211_CMD_REGISTER_BEACONS, 11641 .doit = nl80211_register_beacons, 11642 .policy = nl80211_policy, 11643 .flags = GENL_UNS_ADMIN_PERM, 11644 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11645 NL80211_FLAG_NEED_RTNL, 11646 }, 11647 { 11648 .cmd = NL80211_CMD_SET_NOACK_MAP, 11649 .doit = nl80211_set_noack_map, 11650 .policy = nl80211_policy, 11651 .flags = GENL_UNS_ADMIN_PERM, 11652 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11653 NL80211_FLAG_NEED_RTNL, 11654 }, 11655 { 11656 .cmd = NL80211_CMD_START_P2P_DEVICE, 11657 .doit = nl80211_start_p2p_device, 11658 .policy = nl80211_policy, 11659 .flags = GENL_UNS_ADMIN_PERM, 11660 .internal_flags = NL80211_FLAG_NEED_WDEV | 11661 NL80211_FLAG_NEED_RTNL, 11662 }, 11663 { 11664 .cmd = NL80211_CMD_STOP_P2P_DEVICE, 11665 .doit = nl80211_stop_p2p_device, 11666 .policy = nl80211_policy, 11667 .flags = GENL_UNS_ADMIN_PERM, 11668 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11669 NL80211_FLAG_NEED_RTNL, 11670 }, 11671 { 11672 .cmd = NL80211_CMD_SET_MCAST_RATE, 11673 .doit = nl80211_set_mcast_rate, 11674 .policy = nl80211_policy, 11675 .flags = GENL_UNS_ADMIN_PERM, 11676 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11677 NL80211_FLAG_NEED_RTNL, 11678 }, 11679 { 11680 .cmd = NL80211_CMD_SET_MAC_ACL, 11681 .doit = nl80211_set_mac_acl, 11682 .policy = nl80211_policy, 11683 .flags = GENL_UNS_ADMIN_PERM, 11684 .internal_flags = NL80211_FLAG_NEED_NETDEV | 11685 NL80211_FLAG_NEED_RTNL, 11686 }, 11687 { 11688 .cmd = NL80211_CMD_RADAR_DETECT, 11689 .doit = nl80211_start_radar_detection, 11690 .policy = nl80211_policy, 11691 .flags = GENL_UNS_ADMIN_PERM, 11692 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11693 NL80211_FLAG_NEED_RTNL, 11694 }, 11695 { 11696 .cmd = NL80211_CMD_GET_PROTOCOL_FEATURES, 11697 .doit = nl80211_get_protocol_features, 11698 .policy = nl80211_policy, 11699 }, 11700 { 11701 .cmd = NL80211_CMD_UPDATE_FT_IES, 11702 .doit = nl80211_update_ft_ies, 11703 .policy = nl80211_policy, 11704 .flags = GENL_UNS_ADMIN_PERM, 11705 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11706 NL80211_FLAG_NEED_RTNL, 11707 }, 11708 { 11709 .cmd = NL80211_CMD_CRIT_PROTOCOL_START, 11710 .doit = nl80211_crit_protocol_start, 11711 .policy = nl80211_policy, 11712 .flags = GENL_UNS_ADMIN_PERM, 11713 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11714 NL80211_FLAG_NEED_RTNL, 11715 }, 11716 { 11717 .cmd = NL80211_CMD_CRIT_PROTOCOL_STOP, 11718 .doit = nl80211_crit_protocol_stop, 11719 .policy = nl80211_policy, 11720 .flags = GENL_UNS_ADMIN_PERM, 11721 .internal_flags = NL80211_FLAG_NEED_WDEV_UP | 11722 NL80211_FLAG_NEED_RTNL, 11723 }, 11724 { 11725 .cmd = NL80211_CMD_GET_COALESCE, 11726 .doit = nl80211_get_coalesce, 11727 .policy = nl80211_policy, 11728 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11729 NL80211_FLAG_NEED_RTNL, 11730 }, 11731 { 11732 .cmd = NL80211_CMD_SET_COALESCE, 11733 .doit = nl80211_set_coalesce, 11734 .policy = nl80211_policy, 11735 .flags = GENL_UNS_ADMIN_PERM, 11736 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11737 NL80211_FLAG_NEED_RTNL, 11738 }, 11739 { 11740 .cmd = NL80211_CMD_CHANNEL_SWITCH, 11741 .doit = nl80211_channel_switch, 11742 .policy = nl80211_policy, 11743 .flags = GENL_UNS_ADMIN_PERM, 11744 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11745 NL80211_FLAG_NEED_RTNL, 11746 }, 11747 { 11748 .cmd = NL80211_CMD_VENDOR, 11749 .doit = nl80211_vendor_cmd, 11750 .dumpit = nl80211_vendor_cmd_dump, 11751 .policy = nl80211_policy, 11752 .flags = GENL_UNS_ADMIN_PERM, 11753 .internal_flags = NL80211_FLAG_NEED_WIPHY | 11754 NL80211_FLAG_NEED_RTNL, 11755 }, 11756 { 11757 .cmd = NL80211_CMD_SET_QOS_MAP, 11758 .doit = nl80211_set_qos_map, 11759 .policy = nl80211_policy, 11760 .flags = GENL_UNS_ADMIN_PERM, 11761 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11762 NL80211_FLAG_NEED_RTNL, 11763 }, 11764 { 11765 .cmd = NL80211_CMD_ADD_TX_TS, 11766 .doit = nl80211_add_tx_ts, 11767 .policy = nl80211_policy, 11768 .flags = GENL_UNS_ADMIN_PERM, 11769 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11770 NL80211_FLAG_NEED_RTNL, 11771 }, 11772 { 11773 .cmd = NL80211_CMD_DEL_TX_TS, 11774 .doit = nl80211_del_tx_ts, 11775 .policy = nl80211_policy, 11776 .flags = GENL_UNS_ADMIN_PERM, 11777 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11778 NL80211_FLAG_NEED_RTNL, 11779 }, 11780 { 11781 .cmd = NL80211_CMD_TDLS_CHANNEL_SWITCH, 11782 .doit = nl80211_tdls_channel_switch, 11783 .policy = nl80211_policy, 11784 .flags = GENL_UNS_ADMIN_PERM, 11785 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11786 NL80211_FLAG_NEED_RTNL, 11787 }, 11788 { 11789 .cmd = NL80211_CMD_TDLS_CANCEL_CHANNEL_SWITCH, 11790 .doit = nl80211_tdls_cancel_channel_switch, 11791 .policy = nl80211_policy, 11792 .flags = GENL_UNS_ADMIN_PERM, 11793 .internal_flags = NL80211_FLAG_NEED_NETDEV_UP | 11794 NL80211_FLAG_NEED_RTNL, 11795 }, 11796 }; 11797 11798 /* notification functions */ 11799 11800 void nl80211_notify_wiphy(struct cfg80211_registered_device *rdev, 11801 enum nl80211_commands cmd) 11802 { 11803 struct sk_buff *msg; 11804 struct nl80211_dump_wiphy_state state = {}; 11805 11806 WARN_ON(cmd != NL80211_CMD_NEW_WIPHY && 11807 cmd != NL80211_CMD_DEL_WIPHY); 11808 11809 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11810 if (!msg) 11811 return; 11812 11813 if (nl80211_send_wiphy(rdev, cmd, msg, 0, 0, 0, &state) < 0) { 11814 nlmsg_free(msg); 11815 return; 11816 } 11817 11818 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11819 NL80211_MCGRP_CONFIG, GFP_KERNEL); 11820 } 11821 11822 static int nl80211_add_scan_req(struct sk_buff *msg, 11823 struct cfg80211_registered_device *rdev) 11824 { 11825 struct cfg80211_scan_request *req = rdev->scan_req; 11826 struct nlattr *nest; 11827 int i; 11828 11829 if (WARN_ON(!req)) 11830 return 0; 11831 11832 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 11833 if (!nest) 11834 goto nla_put_failure; 11835 for (i = 0; i < req->n_ssids; i++) { 11836 if (nla_put(msg, i, req->ssids[i].ssid_len, req->ssids[i].ssid)) 11837 goto nla_put_failure; 11838 } 11839 nla_nest_end(msg, nest); 11840 11841 nest = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 11842 if (!nest) 11843 goto nla_put_failure; 11844 for (i = 0; i < req->n_channels; i++) { 11845 if (nla_put_u32(msg, i, req->channels[i]->center_freq)) 11846 goto nla_put_failure; 11847 } 11848 nla_nest_end(msg, nest); 11849 11850 if (req->ie && 11851 nla_put(msg, NL80211_ATTR_IE, req->ie_len, req->ie)) 11852 goto nla_put_failure; 11853 11854 if (req->flags && 11855 nla_put_u32(msg, NL80211_ATTR_SCAN_FLAGS, req->flags)) 11856 goto nla_put_failure; 11857 11858 if (req->info.scan_start_tsf && 11859 (nla_put_u64_64bit(msg, NL80211_ATTR_SCAN_START_TIME_TSF, 11860 req->info.scan_start_tsf, NL80211_BSS_PAD) || 11861 nla_put(msg, NL80211_ATTR_SCAN_START_TIME_TSF_BSSID, ETH_ALEN, 11862 req->info.tsf_bssid))) 11863 goto nla_put_failure; 11864 11865 return 0; 11866 nla_put_failure: 11867 return -ENOBUFS; 11868 } 11869 11870 static int nl80211_send_scan_msg(struct sk_buff *msg, 11871 struct cfg80211_registered_device *rdev, 11872 struct wireless_dev *wdev, 11873 u32 portid, u32 seq, int flags, 11874 u32 cmd) 11875 { 11876 void *hdr; 11877 11878 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11879 if (!hdr) 11880 return -1; 11881 11882 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11883 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 11884 wdev->netdev->ifindex)) || 11885 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 11886 NL80211_ATTR_PAD)) 11887 goto nla_put_failure; 11888 11889 /* ignore errors and send incomplete event anyway */ 11890 nl80211_add_scan_req(msg, rdev); 11891 11892 genlmsg_end(msg, hdr); 11893 return 0; 11894 11895 nla_put_failure: 11896 genlmsg_cancel(msg, hdr); 11897 return -EMSGSIZE; 11898 } 11899 11900 static int 11901 nl80211_send_sched_scan_msg(struct sk_buff *msg, 11902 struct cfg80211_registered_device *rdev, 11903 struct net_device *netdev, 11904 u32 portid, u32 seq, int flags, u32 cmd) 11905 { 11906 void *hdr; 11907 11908 hdr = nl80211hdr_put(msg, portid, seq, flags, cmd); 11909 if (!hdr) 11910 return -1; 11911 11912 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 11913 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 11914 goto nla_put_failure; 11915 11916 genlmsg_end(msg, hdr); 11917 return 0; 11918 11919 nla_put_failure: 11920 genlmsg_cancel(msg, hdr); 11921 return -EMSGSIZE; 11922 } 11923 11924 void nl80211_send_scan_start(struct cfg80211_registered_device *rdev, 11925 struct wireless_dev *wdev) 11926 { 11927 struct sk_buff *msg; 11928 11929 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11930 if (!msg) 11931 return; 11932 11933 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11934 NL80211_CMD_TRIGGER_SCAN) < 0) { 11935 nlmsg_free(msg); 11936 return; 11937 } 11938 11939 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11940 NL80211_MCGRP_SCAN, GFP_KERNEL); 11941 } 11942 11943 struct sk_buff *nl80211_build_scan_msg(struct cfg80211_registered_device *rdev, 11944 struct wireless_dev *wdev, bool aborted) 11945 { 11946 struct sk_buff *msg; 11947 11948 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11949 if (!msg) 11950 return NULL; 11951 11952 if (nl80211_send_scan_msg(msg, rdev, wdev, 0, 0, 0, 11953 aborted ? NL80211_CMD_SCAN_ABORTED : 11954 NL80211_CMD_NEW_SCAN_RESULTS) < 0) { 11955 nlmsg_free(msg); 11956 return NULL; 11957 } 11958 11959 return msg; 11960 } 11961 11962 void nl80211_send_scan_result(struct cfg80211_registered_device *rdev, 11963 struct sk_buff *msg) 11964 { 11965 if (!msg) 11966 return; 11967 11968 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11969 NL80211_MCGRP_SCAN, GFP_KERNEL); 11970 } 11971 11972 void nl80211_send_sched_scan_results(struct cfg80211_registered_device *rdev, 11973 struct net_device *netdev) 11974 { 11975 struct sk_buff *msg; 11976 11977 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11978 if (!msg) 11979 return; 11980 11981 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, 11982 NL80211_CMD_SCHED_SCAN_RESULTS) < 0) { 11983 nlmsg_free(msg); 11984 return; 11985 } 11986 11987 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 11988 NL80211_MCGRP_SCAN, GFP_KERNEL); 11989 } 11990 11991 void nl80211_send_sched_scan(struct cfg80211_registered_device *rdev, 11992 struct net_device *netdev, u32 cmd) 11993 { 11994 struct sk_buff *msg; 11995 11996 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 11997 if (!msg) 11998 return; 11999 12000 if (nl80211_send_sched_scan_msg(msg, rdev, netdev, 0, 0, 0, cmd) < 0) { 12001 nlmsg_free(msg); 12002 return; 12003 } 12004 12005 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12006 NL80211_MCGRP_SCAN, GFP_KERNEL); 12007 } 12008 12009 static bool nl80211_reg_change_event_fill(struct sk_buff *msg, 12010 struct regulatory_request *request) 12011 { 12012 /* Userspace can always count this one always being set */ 12013 if (nla_put_u8(msg, NL80211_ATTR_REG_INITIATOR, request->initiator)) 12014 goto nla_put_failure; 12015 12016 if (request->alpha2[0] == '0' && request->alpha2[1] == '0') { 12017 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12018 NL80211_REGDOM_TYPE_WORLD)) 12019 goto nla_put_failure; 12020 } else if (request->alpha2[0] == '9' && request->alpha2[1] == '9') { 12021 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12022 NL80211_REGDOM_TYPE_CUSTOM_WORLD)) 12023 goto nla_put_failure; 12024 } else if ((request->alpha2[0] == '9' && request->alpha2[1] == '8') || 12025 request->intersect) { 12026 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12027 NL80211_REGDOM_TYPE_INTERSECTION)) 12028 goto nla_put_failure; 12029 } else { 12030 if (nla_put_u8(msg, NL80211_ATTR_REG_TYPE, 12031 NL80211_REGDOM_TYPE_COUNTRY) || 12032 nla_put_string(msg, NL80211_ATTR_REG_ALPHA2, 12033 request->alpha2)) 12034 goto nla_put_failure; 12035 } 12036 12037 if (request->wiphy_idx != WIPHY_IDX_INVALID) { 12038 struct wiphy *wiphy = wiphy_idx_to_wiphy(request->wiphy_idx); 12039 12040 if (wiphy && 12041 nla_put_u32(msg, NL80211_ATTR_WIPHY, request->wiphy_idx)) 12042 goto nla_put_failure; 12043 12044 if (wiphy && 12045 wiphy->regulatory_flags & REGULATORY_WIPHY_SELF_MANAGED && 12046 nla_put_flag(msg, NL80211_ATTR_WIPHY_SELF_MANAGED_REG)) 12047 goto nla_put_failure; 12048 } 12049 12050 return true; 12051 12052 nla_put_failure: 12053 return false; 12054 } 12055 12056 /* 12057 * This can happen on global regulatory changes or device specific settings 12058 * based on custom regulatory domains. 12059 */ 12060 void nl80211_common_reg_change_event(enum nl80211_commands cmd_id, 12061 struct regulatory_request *request) 12062 { 12063 struct sk_buff *msg; 12064 void *hdr; 12065 12066 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12067 if (!msg) 12068 return; 12069 12070 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd_id); 12071 if (!hdr) { 12072 nlmsg_free(msg); 12073 return; 12074 } 12075 12076 if (nl80211_reg_change_event_fill(msg, request) == false) 12077 goto nla_put_failure; 12078 12079 genlmsg_end(msg, hdr); 12080 12081 rcu_read_lock(); 12082 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 12083 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 12084 rcu_read_unlock(); 12085 12086 return; 12087 12088 nla_put_failure: 12089 genlmsg_cancel(msg, hdr); 12090 nlmsg_free(msg); 12091 } 12092 12093 static void nl80211_send_mlme_event(struct cfg80211_registered_device *rdev, 12094 struct net_device *netdev, 12095 const u8 *buf, size_t len, 12096 enum nl80211_commands cmd, gfp_t gfp, 12097 int uapsd_queues) 12098 { 12099 struct sk_buff *msg; 12100 void *hdr; 12101 12102 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12103 if (!msg) 12104 return; 12105 12106 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12107 if (!hdr) { 12108 nlmsg_free(msg); 12109 return; 12110 } 12111 12112 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12113 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12114 nla_put(msg, NL80211_ATTR_FRAME, len, buf)) 12115 goto nla_put_failure; 12116 12117 if (uapsd_queues >= 0) { 12118 struct nlattr *nla_wmm = 12119 nla_nest_start(msg, NL80211_ATTR_STA_WME); 12120 if (!nla_wmm) 12121 goto nla_put_failure; 12122 12123 if (nla_put_u8(msg, NL80211_STA_WME_UAPSD_QUEUES, 12124 uapsd_queues)) 12125 goto nla_put_failure; 12126 12127 nla_nest_end(msg, nla_wmm); 12128 } 12129 12130 genlmsg_end(msg, hdr); 12131 12132 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12133 NL80211_MCGRP_MLME, gfp); 12134 return; 12135 12136 nla_put_failure: 12137 genlmsg_cancel(msg, hdr); 12138 nlmsg_free(msg); 12139 } 12140 12141 void nl80211_send_rx_auth(struct cfg80211_registered_device *rdev, 12142 struct net_device *netdev, const u8 *buf, 12143 size_t len, gfp_t gfp) 12144 { 12145 nl80211_send_mlme_event(rdev, netdev, buf, len, 12146 NL80211_CMD_AUTHENTICATE, gfp, -1); 12147 } 12148 12149 void nl80211_send_rx_assoc(struct cfg80211_registered_device *rdev, 12150 struct net_device *netdev, const u8 *buf, 12151 size_t len, gfp_t gfp, int uapsd_queues) 12152 { 12153 nl80211_send_mlme_event(rdev, netdev, buf, len, 12154 NL80211_CMD_ASSOCIATE, gfp, uapsd_queues); 12155 } 12156 12157 void nl80211_send_deauth(struct cfg80211_registered_device *rdev, 12158 struct net_device *netdev, const u8 *buf, 12159 size_t len, gfp_t gfp) 12160 { 12161 nl80211_send_mlme_event(rdev, netdev, buf, len, 12162 NL80211_CMD_DEAUTHENTICATE, gfp, -1); 12163 } 12164 12165 void nl80211_send_disassoc(struct cfg80211_registered_device *rdev, 12166 struct net_device *netdev, const u8 *buf, 12167 size_t len, gfp_t gfp) 12168 { 12169 nl80211_send_mlme_event(rdev, netdev, buf, len, 12170 NL80211_CMD_DISASSOCIATE, gfp, -1); 12171 } 12172 12173 void cfg80211_rx_unprot_mlme_mgmt(struct net_device *dev, const u8 *buf, 12174 size_t len) 12175 { 12176 struct wireless_dev *wdev = dev->ieee80211_ptr; 12177 struct wiphy *wiphy = wdev->wiphy; 12178 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12179 const struct ieee80211_mgmt *mgmt = (void *)buf; 12180 u32 cmd; 12181 12182 if (WARN_ON(len < 2)) 12183 return; 12184 12185 if (ieee80211_is_deauth(mgmt->frame_control)) 12186 cmd = NL80211_CMD_UNPROT_DEAUTHENTICATE; 12187 else 12188 cmd = NL80211_CMD_UNPROT_DISASSOCIATE; 12189 12190 trace_cfg80211_rx_unprot_mlme_mgmt(dev, buf, len); 12191 nl80211_send_mlme_event(rdev, dev, buf, len, cmd, GFP_ATOMIC, -1); 12192 } 12193 EXPORT_SYMBOL(cfg80211_rx_unprot_mlme_mgmt); 12194 12195 static void nl80211_send_mlme_timeout(struct cfg80211_registered_device *rdev, 12196 struct net_device *netdev, int cmd, 12197 const u8 *addr, gfp_t gfp) 12198 { 12199 struct sk_buff *msg; 12200 void *hdr; 12201 12202 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12203 if (!msg) 12204 return; 12205 12206 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12207 if (!hdr) { 12208 nlmsg_free(msg); 12209 return; 12210 } 12211 12212 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12213 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12214 nla_put_flag(msg, NL80211_ATTR_TIMED_OUT) || 12215 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 12216 goto nla_put_failure; 12217 12218 genlmsg_end(msg, hdr); 12219 12220 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12221 NL80211_MCGRP_MLME, gfp); 12222 return; 12223 12224 nla_put_failure: 12225 genlmsg_cancel(msg, hdr); 12226 nlmsg_free(msg); 12227 } 12228 12229 void nl80211_send_auth_timeout(struct cfg80211_registered_device *rdev, 12230 struct net_device *netdev, const u8 *addr, 12231 gfp_t gfp) 12232 { 12233 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_AUTHENTICATE, 12234 addr, gfp); 12235 } 12236 12237 void nl80211_send_assoc_timeout(struct cfg80211_registered_device *rdev, 12238 struct net_device *netdev, const u8 *addr, 12239 gfp_t gfp) 12240 { 12241 nl80211_send_mlme_timeout(rdev, netdev, NL80211_CMD_ASSOCIATE, 12242 addr, gfp); 12243 } 12244 12245 void nl80211_send_connect_result(struct cfg80211_registered_device *rdev, 12246 struct net_device *netdev, const u8 *bssid, 12247 const u8 *req_ie, size_t req_ie_len, 12248 const u8 *resp_ie, size_t resp_ie_len, 12249 int status, gfp_t gfp) 12250 { 12251 struct sk_buff *msg; 12252 void *hdr; 12253 12254 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12255 if (!msg) 12256 return; 12257 12258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONNECT); 12259 if (!hdr) { 12260 nlmsg_free(msg); 12261 return; 12262 } 12263 12264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12265 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12266 (bssid && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) || 12267 nla_put_u16(msg, NL80211_ATTR_STATUS_CODE, 12268 status < 0 ? WLAN_STATUS_UNSPECIFIED_FAILURE : 12269 status) || 12270 (status < 0 && nla_put_flag(msg, NL80211_ATTR_TIMED_OUT)) || 12271 (req_ie && 12272 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 12273 (resp_ie && 12274 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 12275 goto nla_put_failure; 12276 12277 genlmsg_end(msg, hdr); 12278 12279 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12280 NL80211_MCGRP_MLME, gfp); 12281 return; 12282 12283 nla_put_failure: 12284 genlmsg_cancel(msg, hdr); 12285 nlmsg_free(msg); 12286 } 12287 12288 void nl80211_send_roamed(struct cfg80211_registered_device *rdev, 12289 struct net_device *netdev, const u8 *bssid, 12290 const u8 *req_ie, size_t req_ie_len, 12291 const u8 *resp_ie, size_t resp_ie_len, gfp_t gfp) 12292 { 12293 struct sk_buff *msg; 12294 void *hdr; 12295 12296 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12297 if (!msg) 12298 return; 12299 12300 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_ROAM); 12301 if (!hdr) { 12302 nlmsg_free(msg); 12303 return; 12304 } 12305 12306 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12307 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12308 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid) || 12309 (req_ie && 12310 nla_put(msg, NL80211_ATTR_REQ_IE, req_ie_len, req_ie)) || 12311 (resp_ie && 12312 nla_put(msg, NL80211_ATTR_RESP_IE, resp_ie_len, resp_ie))) 12313 goto nla_put_failure; 12314 12315 genlmsg_end(msg, hdr); 12316 12317 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12318 NL80211_MCGRP_MLME, gfp); 12319 return; 12320 12321 nla_put_failure: 12322 genlmsg_cancel(msg, hdr); 12323 nlmsg_free(msg); 12324 } 12325 12326 void nl80211_send_disconnected(struct cfg80211_registered_device *rdev, 12327 struct net_device *netdev, u16 reason, 12328 const u8 *ie, size_t ie_len, bool from_ap) 12329 { 12330 struct sk_buff *msg; 12331 void *hdr; 12332 12333 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 12334 if (!msg) 12335 return; 12336 12337 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_DISCONNECT); 12338 if (!hdr) { 12339 nlmsg_free(msg); 12340 return; 12341 } 12342 12343 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12344 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12345 (from_ap && reason && 12346 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason)) || 12347 (from_ap && 12348 nla_put_flag(msg, NL80211_ATTR_DISCONNECTED_BY_AP)) || 12349 (ie && nla_put(msg, NL80211_ATTR_IE, ie_len, ie))) 12350 goto nla_put_failure; 12351 12352 genlmsg_end(msg, hdr); 12353 12354 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12355 NL80211_MCGRP_MLME, GFP_KERNEL); 12356 return; 12357 12358 nla_put_failure: 12359 genlmsg_cancel(msg, hdr); 12360 nlmsg_free(msg); 12361 } 12362 12363 void nl80211_send_ibss_bssid(struct cfg80211_registered_device *rdev, 12364 struct net_device *netdev, const u8 *bssid, 12365 gfp_t gfp) 12366 { 12367 struct sk_buff *msg; 12368 void *hdr; 12369 12370 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12371 if (!msg) 12372 return; 12373 12374 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_JOIN_IBSS); 12375 if (!hdr) { 12376 nlmsg_free(msg); 12377 return; 12378 } 12379 12380 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12381 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12382 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 12383 goto nla_put_failure; 12384 12385 genlmsg_end(msg, hdr); 12386 12387 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12388 NL80211_MCGRP_MLME, gfp); 12389 return; 12390 12391 nla_put_failure: 12392 genlmsg_cancel(msg, hdr); 12393 nlmsg_free(msg); 12394 } 12395 12396 void cfg80211_notify_new_peer_candidate(struct net_device *dev, const u8 *addr, 12397 const u8* ie, u8 ie_len, gfp_t gfp) 12398 { 12399 struct wireless_dev *wdev = dev->ieee80211_ptr; 12400 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12401 struct sk_buff *msg; 12402 void *hdr; 12403 12404 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_MESH_POINT)) 12405 return; 12406 12407 trace_cfg80211_notify_new_peer_candidate(dev, addr); 12408 12409 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12410 if (!msg) 12411 return; 12412 12413 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NEW_PEER_CANDIDATE); 12414 if (!hdr) { 12415 nlmsg_free(msg); 12416 return; 12417 } 12418 12419 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12420 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12421 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 12422 (ie_len && ie && 12423 nla_put(msg, NL80211_ATTR_IE, ie_len , ie))) 12424 goto nla_put_failure; 12425 12426 genlmsg_end(msg, hdr); 12427 12428 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12429 NL80211_MCGRP_MLME, gfp); 12430 return; 12431 12432 nla_put_failure: 12433 genlmsg_cancel(msg, hdr); 12434 nlmsg_free(msg); 12435 } 12436 EXPORT_SYMBOL(cfg80211_notify_new_peer_candidate); 12437 12438 void nl80211_michael_mic_failure(struct cfg80211_registered_device *rdev, 12439 struct net_device *netdev, const u8 *addr, 12440 enum nl80211_key_type key_type, int key_id, 12441 const u8 *tsc, gfp_t gfp) 12442 { 12443 struct sk_buff *msg; 12444 void *hdr; 12445 12446 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12447 if (!msg) 12448 return; 12449 12450 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_MICHAEL_MIC_FAILURE); 12451 if (!hdr) { 12452 nlmsg_free(msg); 12453 return; 12454 } 12455 12456 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12457 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 12458 (addr && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) || 12459 nla_put_u32(msg, NL80211_ATTR_KEY_TYPE, key_type) || 12460 (key_id != -1 && 12461 nla_put_u8(msg, NL80211_ATTR_KEY_IDX, key_id)) || 12462 (tsc && nla_put(msg, NL80211_ATTR_KEY_SEQ, 6, tsc))) 12463 goto nla_put_failure; 12464 12465 genlmsg_end(msg, hdr); 12466 12467 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12468 NL80211_MCGRP_MLME, gfp); 12469 return; 12470 12471 nla_put_failure: 12472 genlmsg_cancel(msg, hdr); 12473 nlmsg_free(msg); 12474 } 12475 12476 void nl80211_send_beacon_hint_event(struct wiphy *wiphy, 12477 struct ieee80211_channel *channel_before, 12478 struct ieee80211_channel *channel_after) 12479 { 12480 struct sk_buff *msg; 12481 void *hdr; 12482 struct nlattr *nl_freq; 12483 12484 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_ATOMIC); 12485 if (!msg) 12486 return; 12487 12488 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_REG_BEACON_HINT); 12489 if (!hdr) { 12490 nlmsg_free(msg); 12491 return; 12492 } 12493 12494 /* 12495 * Since we are applying the beacon hint to a wiphy we know its 12496 * wiphy_idx is valid 12497 */ 12498 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, get_wiphy_idx(wiphy))) 12499 goto nla_put_failure; 12500 12501 /* Before */ 12502 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_BEFORE); 12503 if (!nl_freq) 12504 goto nla_put_failure; 12505 if (nl80211_msg_put_channel(msg, channel_before, false)) 12506 goto nla_put_failure; 12507 nla_nest_end(msg, nl_freq); 12508 12509 /* After */ 12510 nl_freq = nla_nest_start(msg, NL80211_ATTR_FREQ_AFTER); 12511 if (!nl_freq) 12512 goto nla_put_failure; 12513 if (nl80211_msg_put_channel(msg, channel_after, false)) 12514 goto nla_put_failure; 12515 nla_nest_end(msg, nl_freq); 12516 12517 genlmsg_end(msg, hdr); 12518 12519 rcu_read_lock(); 12520 genlmsg_multicast_allns(&nl80211_fam, msg, 0, 12521 NL80211_MCGRP_REGULATORY, GFP_ATOMIC); 12522 rcu_read_unlock(); 12523 12524 return; 12525 12526 nla_put_failure: 12527 genlmsg_cancel(msg, hdr); 12528 nlmsg_free(msg); 12529 } 12530 12531 static void nl80211_send_remain_on_chan_event( 12532 int cmd, struct cfg80211_registered_device *rdev, 12533 struct wireless_dev *wdev, u64 cookie, 12534 struct ieee80211_channel *chan, 12535 unsigned int duration, gfp_t gfp) 12536 { 12537 struct sk_buff *msg; 12538 void *hdr; 12539 12540 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12541 if (!msg) 12542 return; 12543 12544 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12545 if (!hdr) { 12546 nlmsg_free(msg); 12547 return; 12548 } 12549 12550 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12551 (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12552 wdev->netdev->ifindex)) || 12553 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12554 NL80211_ATTR_PAD) || 12555 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, chan->center_freq) || 12556 nla_put_u32(msg, NL80211_ATTR_WIPHY_CHANNEL_TYPE, 12557 NL80211_CHAN_NO_HT) || 12558 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12559 NL80211_ATTR_PAD)) 12560 goto nla_put_failure; 12561 12562 if (cmd == NL80211_CMD_REMAIN_ON_CHANNEL && 12563 nla_put_u32(msg, NL80211_ATTR_DURATION, duration)) 12564 goto nla_put_failure; 12565 12566 genlmsg_end(msg, hdr); 12567 12568 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12569 NL80211_MCGRP_MLME, gfp); 12570 return; 12571 12572 nla_put_failure: 12573 genlmsg_cancel(msg, hdr); 12574 nlmsg_free(msg); 12575 } 12576 12577 void cfg80211_ready_on_channel(struct wireless_dev *wdev, u64 cookie, 12578 struct ieee80211_channel *chan, 12579 unsigned int duration, gfp_t gfp) 12580 { 12581 struct wiphy *wiphy = wdev->wiphy; 12582 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12583 12584 trace_cfg80211_ready_on_channel(wdev, cookie, chan, duration); 12585 nl80211_send_remain_on_chan_event(NL80211_CMD_REMAIN_ON_CHANNEL, 12586 rdev, wdev, cookie, chan, 12587 duration, gfp); 12588 } 12589 EXPORT_SYMBOL(cfg80211_ready_on_channel); 12590 12591 void cfg80211_remain_on_channel_expired(struct wireless_dev *wdev, u64 cookie, 12592 struct ieee80211_channel *chan, 12593 gfp_t gfp) 12594 { 12595 struct wiphy *wiphy = wdev->wiphy; 12596 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12597 12598 trace_cfg80211_ready_on_channel_expired(wdev, cookie, chan); 12599 nl80211_send_remain_on_chan_event(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL, 12600 rdev, wdev, cookie, chan, 0, gfp); 12601 } 12602 EXPORT_SYMBOL(cfg80211_remain_on_channel_expired); 12603 12604 void cfg80211_new_sta(struct net_device *dev, const u8 *mac_addr, 12605 struct station_info *sinfo, gfp_t gfp) 12606 { 12607 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12608 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12609 struct sk_buff *msg; 12610 12611 trace_cfg80211_new_sta(dev, mac_addr, sinfo); 12612 12613 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12614 if (!msg) 12615 return; 12616 12617 if (nl80211_send_station(msg, NL80211_CMD_NEW_STATION, 0, 0, 0, 12618 rdev, dev, mac_addr, sinfo) < 0) { 12619 nlmsg_free(msg); 12620 return; 12621 } 12622 12623 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12624 NL80211_MCGRP_MLME, gfp); 12625 } 12626 EXPORT_SYMBOL(cfg80211_new_sta); 12627 12628 void cfg80211_del_sta_sinfo(struct net_device *dev, const u8 *mac_addr, 12629 struct station_info *sinfo, gfp_t gfp) 12630 { 12631 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12632 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12633 struct sk_buff *msg; 12634 struct station_info empty_sinfo = {}; 12635 12636 if (!sinfo) 12637 sinfo = &empty_sinfo; 12638 12639 trace_cfg80211_del_sta(dev, mac_addr); 12640 12641 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12642 if (!msg) 12643 return; 12644 12645 if (nl80211_send_station(msg, NL80211_CMD_DEL_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_del_sta_sinfo); 12655 12656 void cfg80211_conn_failed(struct net_device *dev, const u8 *mac_addr, 12657 enum nl80211_connect_failed_reason reason, 12658 gfp_t gfp) 12659 { 12660 struct wiphy *wiphy = dev->ieee80211_ptr->wiphy; 12661 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12662 struct sk_buff *msg; 12663 void *hdr; 12664 12665 msg = nlmsg_new(NLMSG_GOODSIZE, gfp); 12666 if (!msg) 12667 return; 12668 12669 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CONN_FAILED); 12670 if (!hdr) { 12671 nlmsg_free(msg); 12672 return; 12673 } 12674 12675 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12676 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac_addr) || 12677 nla_put_u32(msg, NL80211_ATTR_CONN_FAILED_REASON, reason)) 12678 goto nla_put_failure; 12679 12680 genlmsg_end(msg, hdr); 12681 12682 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12683 NL80211_MCGRP_MLME, gfp); 12684 return; 12685 12686 nla_put_failure: 12687 genlmsg_cancel(msg, hdr); 12688 nlmsg_free(msg); 12689 } 12690 EXPORT_SYMBOL(cfg80211_conn_failed); 12691 12692 static bool __nl80211_unexpected_frame(struct net_device *dev, u8 cmd, 12693 const u8 *addr, gfp_t gfp) 12694 { 12695 struct wireless_dev *wdev = dev->ieee80211_ptr; 12696 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12697 struct sk_buff *msg; 12698 void *hdr; 12699 u32 nlportid = ACCESS_ONCE(wdev->ap_unexpected_nlportid); 12700 12701 if (!nlportid) 12702 return false; 12703 12704 msg = nlmsg_new(100, gfp); 12705 if (!msg) 12706 return true; 12707 12708 hdr = nl80211hdr_put(msg, 0, 0, 0, cmd); 12709 if (!hdr) { 12710 nlmsg_free(msg); 12711 return true; 12712 } 12713 12714 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12715 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 12716 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr)) 12717 goto nla_put_failure; 12718 12719 genlmsg_end(msg, hdr); 12720 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12721 return true; 12722 12723 nla_put_failure: 12724 genlmsg_cancel(msg, hdr); 12725 nlmsg_free(msg); 12726 return true; 12727 } 12728 12729 bool cfg80211_rx_spurious_frame(struct net_device *dev, 12730 const u8 *addr, gfp_t gfp) 12731 { 12732 struct wireless_dev *wdev = dev->ieee80211_ptr; 12733 bool ret; 12734 12735 trace_cfg80211_rx_spurious_frame(dev, addr); 12736 12737 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12738 wdev->iftype != NL80211_IFTYPE_P2P_GO)) { 12739 trace_cfg80211_return_bool(false); 12740 return false; 12741 } 12742 ret = __nl80211_unexpected_frame(dev, NL80211_CMD_UNEXPECTED_FRAME, 12743 addr, gfp); 12744 trace_cfg80211_return_bool(ret); 12745 return ret; 12746 } 12747 EXPORT_SYMBOL(cfg80211_rx_spurious_frame); 12748 12749 bool cfg80211_rx_unexpected_4addr_frame(struct net_device *dev, 12750 const u8 *addr, gfp_t gfp) 12751 { 12752 struct wireless_dev *wdev = dev->ieee80211_ptr; 12753 bool ret; 12754 12755 trace_cfg80211_rx_unexpected_4addr_frame(dev, addr); 12756 12757 if (WARN_ON(wdev->iftype != NL80211_IFTYPE_AP && 12758 wdev->iftype != NL80211_IFTYPE_P2P_GO && 12759 wdev->iftype != NL80211_IFTYPE_AP_VLAN)) { 12760 trace_cfg80211_return_bool(false); 12761 return false; 12762 } 12763 ret = __nl80211_unexpected_frame(dev, 12764 NL80211_CMD_UNEXPECTED_4ADDR_FRAME, 12765 addr, gfp); 12766 trace_cfg80211_return_bool(ret); 12767 return ret; 12768 } 12769 EXPORT_SYMBOL(cfg80211_rx_unexpected_4addr_frame); 12770 12771 int nl80211_send_mgmt(struct cfg80211_registered_device *rdev, 12772 struct wireless_dev *wdev, u32 nlportid, 12773 int freq, int sig_dbm, 12774 const u8 *buf, size_t len, u32 flags, gfp_t gfp) 12775 { 12776 struct net_device *netdev = wdev->netdev; 12777 struct sk_buff *msg; 12778 void *hdr; 12779 12780 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12781 if (!msg) 12782 return -ENOMEM; 12783 12784 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 12785 if (!hdr) { 12786 nlmsg_free(msg); 12787 return -ENOMEM; 12788 } 12789 12790 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12791 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12792 netdev->ifindex)) || 12793 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12794 NL80211_ATTR_PAD) || 12795 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq) || 12796 (sig_dbm && 12797 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 12798 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12799 (flags && 12800 nla_put_u32(msg, NL80211_ATTR_RXMGMT_FLAGS, flags))) 12801 goto nla_put_failure; 12802 12803 genlmsg_end(msg, hdr); 12804 12805 return genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 12806 12807 nla_put_failure: 12808 genlmsg_cancel(msg, hdr); 12809 nlmsg_free(msg); 12810 return -ENOBUFS; 12811 } 12812 12813 void cfg80211_mgmt_tx_status(struct wireless_dev *wdev, u64 cookie, 12814 const u8 *buf, size_t len, bool ack, gfp_t gfp) 12815 { 12816 struct wiphy *wiphy = wdev->wiphy; 12817 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 12818 struct net_device *netdev = wdev->netdev; 12819 struct sk_buff *msg; 12820 void *hdr; 12821 12822 trace_cfg80211_mgmt_tx_status(wdev, cookie, ack); 12823 12824 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12825 if (!msg) 12826 return; 12827 12828 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME_TX_STATUS); 12829 if (!hdr) { 12830 nlmsg_free(msg); 12831 return; 12832 } 12833 12834 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12835 (netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 12836 netdev->ifindex)) || 12837 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 12838 NL80211_ATTR_PAD) || 12839 nla_put(msg, NL80211_ATTR_FRAME, len, buf) || 12840 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 12841 NL80211_ATTR_PAD) || 12842 (ack && nla_put_flag(msg, NL80211_ATTR_ACK))) 12843 goto nla_put_failure; 12844 12845 genlmsg_end(msg, hdr); 12846 12847 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12848 NL80211_MCGRP_MLME, gfp); 12849 return; 12850 12851 nla_put_failure: 12852 genlmsg_cancel(msg, hdr); 12853 nlmsg_free(msg); 12854 } 12855 EXPORT_SYMBOL(cfg80211_mgmt_tx_status); 12856 12857 static struct sk_buff *cfg80211_prepare_cqm(struct net_device *dev, 12858 const char *mac, gfp_t gfp) 12859 { 12860 struct wireless_dev *wdev = dev->ieee80211_ptr; 12861 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 12862 struct sk_buff *msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 12863 void **cb; 12864 12865 if (!msg) 12866 return NULL; 12867 12868 cb = (void **)msg->cb; 12869 12870 cb[0] = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_NOTIFY_CQM); 12871 if (!cb[0]) { 12872 nlmsg_free(msg); 12873 return NULL; 12874 } 12875 12876 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 12877 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex)) 12878 goto nla_put_failure; 12879 12880 if (mac && nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, mac)) 12881 goto nla_put_failure; 12882 12883 cb[1] = nla_nest_start(msg, NL80211_ATTR_CQM); 12884 if (!cb[1]) 12885 goto nla_put_failure; 12886 12887 cb[2] = rdev; 12888 12889 return msg; 12890 nla_put_failure: 12891 nlmsg_free(msg); 12892 return NULL; 12893 } 12894 12895 static void cfg80211_send_cqm(struct sk_buff *msg, gfp_t gfp) 12896 { 12897 void **cb = (void **)msg->cb; 12898 struct cfg80211_registered_device *rdev = cb[2]; 12899 12900 nla_nest_end(msg, cb[1]); 12901 genlmsg_end(msg, cb[0]); 12902 12903 memset(msg->cb, 0, sizeof(msg->cb)); 12904 12905 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 12906 NL80211_MCGRP_MLME, gfp); 12907 } 12908 12909 void cfg80211_cqm_rssi_notify(struct net_device *dev, 12910 enum nl80211_cqm_rssi_threshold_event rssi_event, 12911 gfp_t gfp) 12912 { 12913 struct sk_buff *msg; 12914 12915 trace_cfg80211_cqm_rssi_notify(dev, rssi_event); 12916 12917 if (WARN_ON(rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW && 12918 rssi_event != NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH)) 12919 return; 12920 12921 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12922 if (!msg) 12923 return; 12924 12925 if (nla_put_u32(msg, NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT, 12926 rssi_event)) 12927 goto nla_put_failure; 12928 12929 cfg80211_send_cqm(msg, gfp); 12930 12931 return; 12932 12933 nla_put_failure: 12934 nlmsg_free(msg); 12935 } 12936 EXPORT_SYMBOL(cfg80211_cqm_rssi_notify); 12937 12938 void cfg80211_cqm_txe_notify(struct net_device *dev, 12939 const u8 *peer, u32 num_packets, 12940 u32 rate, u32 intvl, gfp_t gfp) 12941 { 12942 struct sk_buff *msg; 12943 12944 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12945 if (!msg) 12946 return; 12947 12948 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_PKTS, num_packets)) 12949 goto nla_put_failure; 12950 12951 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_RATE, rate)) 12952 goto nla_put_failure; 12953 12954 if (nla_put_u32(msg, NL80211_ATTR_CQM_TXE_INTVL, intvl)) 12955 goto nla_put_failure; 12956 12957 cfg80211_send_cqm(msg, gfp); 12958 return; 12959 12960 nla_put_failure: 12961 nlmsg_free(msg); 12962 } 12963 EXPORT_SYMBOL(cfg80211_cqm_txe_notify); 12964 12965 void cfg80211_cqm_pktloss_notify(struct net_device *dev, 12966 const u8 *peer, u32 num_packets, gfp_t gfp) 12967 { 12968 struct sk_buff *msg; 12969 12970 trace_cfg80211_cqm_pktloss_notify(dev, peer, num_packets); 12971 12972 msg = cfg80211_prepare_cqm(dev, peer, gfp); 12973 if (!msg) 12974 return; 12975 12976 if (nla_put_u32(msg, NL80211_ATTR_CQM_PKT_LOSS_EVENT, num_packets)) 12977 goto nla_put_failure; 12978 12979 cfg80211_send_cqm(msg, gfp); 12980 return; 12981 12982 nla_put_failure: 12983 nlmsg_free(msg); 12984 } 12985 EXPORT_SYMBOL(cfg80211_cqm_pktloss_notify); 12986 12987 void cfg80211_cqm_beacon_loss_notify(struct net_device *dev, gfp_t gfp) 12988 { 12989 struct sk_buff *msg; 12990 12991 msg = cfg80211_prepare_cqm(dev, NULL, gfp); 12992 if (!msg) 12993 return; 12994 12995 if (nla_put_flag(msg, NL80211_ATTR_CQM_BEACON_LOSS_EVENT)) 12996 goto nla_put_failure; 12997 12998 cfg80211_send_cqm(msg, gfp); 12999 return; 13000 13001 nla_put_failure: 13002 nlmsg_free(msg); 13003 } 13004 EXPORT_SYMBOL(cfg80211_cqm_beacon_loss_notify); 13005 13006 static void nl80211_gtk_rekey_notify(struct cfg80211_registered_device *rdev, 13007 struct net_device *netdev, const u8 *bssid, 13008 const u8 *replay_ctr, gfp_t gfp) 13009 { 13010 struct sk_buff *msg; 13011 struct nlattr *rekey_attr; 13012 void *hdr; 13013 13014 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13015 if (!msg) 13016 return; 13017 13018 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_REKEY_OFFLOAD); 13019 if (!hdr) { 13020 nlmsg_free(msg); 13021 return; 13022 } 13023 13024 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13025 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13026 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, bssid)) 13027 goto nla_put_failure; 13028 13029 rekey_attr = nla_nest_start(msg, NL80211_ATTR_REKEY_DATA); 13030 if (!rekey_attr) 13031 goto nla_put_failure; 13032 13033 if (nla_put(msg, NL80211_REKEY_DATA_REPLAY_CTR, 13034 NL80211_REPLAY_CTR_LEN, replay_ctr)) 13035 goto nla_put_failure; 13036 13037 nla_nest_end(msg, rekey_attr); 13038 13039 genlmsg_end(msg, hdr); 13040 13041 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13042 NL80211_MCGRP_MLME, gfp); 13043 return; 13044 13045 nla_put_failure: 13046 genlmsg_cancel(msg, hdr); 13047 nlmsg_free(msg); 13048 } 13049 13050 void cfg80211_gtk_rekey_notify(struct net_device *dev, const u8 *bssid, 13051 const u8 *replay_ctr, gfp_t gfp) 13052 { 13053 struct wireless_dev *wdev = dev->ieee80211_ptr; 13054 struct wiphy *wiphy = wdev->wiphy; 13055 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13056 13057 trace_cfg80211_gtk_rekey_notify(dev, bssid); 13058 nl80211_gtk_rekey_notify(rdev, dev, bssid, replay_ctr, gfp); 13059 } 13060 EXPORT_SYMBOL(cfg80211_gtk_rekey_notify); 13061 13062 static void 13063 nl80211_pmksa_candidate_notify(struct cfg80211_registered_device *rdev, 13064 struct net_device *netdev, int index, 13065 const u8 *bssid, bool preauth, gfp_t gfp) 13066 { 13067 struct sk_buff *msg; 13068 struct nlattr *attr; 13069 void *hdr; 13070 13071 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13072 if (!msg) 13073 return; 13074 13075 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PMKSA_CANDIDATE); 13076 if (!hdr) { 13077 nlmsg_free(msg); 13078 return; 13079 } 13080 13081 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13082 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 13083 goto nla_put_failure; 13084 13085 attr = nla_nest_start(msg, NL80211_ATTR_PMKSA_CANDIDATE); 13086 if (!attr) 13087 goto nla_put_failure; 13088 13089 if (nla_put_u32(msg, NL80211_PMKSA_CANDIDATE_INDEX, index) || 13090 nla_put(msg, NL80211_PMKSA_CANDIDATE_BSSID, ETH_ALEN, bssid) || 13091 (preauth && 13092 nla_put_flag(msg, NL80211_PMKSA_CANDIDATE_PREAUTH))) 13093 goto nla_put_failure; 13094 13095 nla_nest_end(msg, attr); 13096 13097 genlmsg_end(msg, hdr); 13098 13099 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13100 NL80211_MCGRP_MLME, gfp); 13101 return; 13102 13103 nla_put_failure: 13104 genlmsg_cancel(msg, hdr); 13105 nlmsg_free(msg); 13106 } 13107 13108 void cfg80211_pmksa_candidate_notify(struct net_device *dev, int index, 13109 const u8 *bssid, bool preauth, gfp_t gfp) 13110 { 13111 struct wireless_dev *wdev = dev->ieee80211_ptr; 13112 struct wiphy *wiphy = wdev->wiphy; 13113 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13114 13115 trace_cfg80211_pmksa_candidate_notify(dev, index, bssid, preauth); 13116 nl80211_pmksa_candidate_notify(rdev, dev, index, bssid, preauth, gfp); 13117 } 13118 EXPORT_SYMBOL(cfg80211_pmksa_candidate_notify); 13119 13120 static void nl80211_ch_switch_notify(struct cfg80211_registered_device *rdev, 13121 struct net_device *netdev, 13122 struct cfg80211_chan_def *chandef, 13123 gfp_t gfp, 13124 enum nl80211_commands notif, 13125 u8 count) 13126 { 13127 struct sk_buff *msg; 13128 void *hdr; 13129 13130 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13131 if (!msg) 13132 return; 13133 13134 hdr = nl80211hdr_put(msg, 0, 0, 0, notif); 13135 if (!hdr) { 13136 nlmsg_free(msg); 13137 return; 13138 } 13139 13140 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex)) 13141 goto nla_put_failure; 13142 13143 if (nl80211_send_chandef(msg, chandef)) 13144 goto nla_put_failure; 13145 13146 if ((notif == NL80211_CMD_CH_SWITCH_STARTED_NOTIFY) && 13147 (nla_put_u32(msg, NL80211_ATTR_CH_SWITCH_COUNT, count))) 13148 goto nla_put_failure; 13149 13150 genlmsg_end(msg, hdr); 13151 13152 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13153 NL80211_MCGRP_MLME, gfp); 13154 return; 13155 13156 nla_put_failure: 13157 genlmsg_cancel(msg, hdr); 13158 nlmsg_free(msg); 13159 } 13160 13161 void cfg80211_ch_switch_notify(struct net_device *dev, 13162 struct cfg80211_chan_def *chandef) 13163 { 13164 struct wireless_dev *wdev = dev->ieee80211_ptr; 13165 struct wiphy *wiphy = wdev->wiphy; 13166 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13167 13168 ASSERT_WDEV_LOCK(wdev); 13169 13170 trace_cfg80211_ch_switch_notify(dev, chandef); 13171 13172 wdev->chandef = *chandef; 13173 wdev->preset_chandef = *chandef; 13174 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 13175 NL80211_CMD_CH_SWITCH_NOTIFY, 0); 13176 } 13177 EXPORT_SYMBOL(cfg80211_ch_switch_notify); 13178 13179 void cfg80211_ch_switch_started_notify(struct net_device *dev, 13180 struct cfg80211_chan_def *chandef, 13181 u8 count) 13182 { 13183 struct wireless_dev *wdev = dev->ieee80211_ptr; 13184 struct wiphy *wiphy = wdev->wiphy; 13185 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13186 13187 trace_cfg80211_ch_switch_started_notify(dev, chandef); 13188 13189 nl80211_ch_switch_notify(rdev, dev, chandef, GFP_KERNEL, 13190 NL80211_CMD_CH_SWITCH_STARTED_NOTIFY, count); 13191 } 13192 EXPORT_SYMBOL(cfg80211_ch_switch_started_notify); 13193 13194 void 13195 nl80211_radar_notify(struct cfg80211_registered_device *rdev, 13196 const struct cfg80211_chan_def *chandef, 13197 enum nl80211_radar_event event, 13198 struct net_device *netdev, gfp_t gfp) 13199 { 13200 struct sk_buff *msg; 13201 void *hdr; 13202 13203 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13204 if (!msg) 13205 return; 13206 13207 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_RADAR_DETECT); 13208 if (!hdr) { 13209 nlmsg_free(msg); 13210 return; 13211 } 13212 13213 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx)) 13214 goto nla_put_failure; 13215 13216 /* NOP and radar events don't need a netdev parameter */ 13217 if (netdev) { 13218 struct wireless_dev *wdev = netdev->ieee80211_ptr; 13219 13220 if (nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13221 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13222 NL80211_ATTR_PAD)) 13223 goto nla_put_failure; 13224 } 13225 13226 if (nla_put_u32(msg, NL80211_ATTR_RADAR_EVENT, event)) 13227 goto nla_put_failure; 13228 13229 if (nl80211_send_chandef(msg, chandef)) 13230 goto nla_put_failure; 13231 13232 genlmsg_end(msg, hdr); 13233 13234 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13235 NL80211_MCGRP_MLME, gfp); 13236 return; 13237 13238 nla_put_failure: 13239 genlmsg_cancel(msg, hdr); 13240 nlmsg_free(msg); 13241 } 13242 13243 void cfg80211_probe_status(struct net_device *dev, const u8 *addr, 13244 u64 cookie, bool acked, gfp_t gfp) 13245 { 13246 struct wireless_dev *wdev = dev->ieee80211_ptr; 13247 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13248 struct sk_buff *msg; 13249 void *hdr; 13250 13251 trace_cfg80211_probe_status(dev, addr, cookie, acked); 13252 13253 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13254 13255 if (!msg) 13256 return; 13257 13258 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_PROBE_CLIENT); 13259 if (!hdr) { 13260 nlmsg_free(msg); 13261 return; 13262 } 13263 13264 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13265 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13266 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, addr) || 13267 nla_put_u64_64bit(msg, NL80211_ATTR_COOKIE, cookie, 13268 NL80211_ATTR_PAD) || 13269 (acked && nla_put_flag(msg, NL80211_ATTR_ACK))) 13270 goto nla_put_failure; 13271 13272 genlmsg_end(msg, hdr); 13273 13274 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13275 NL80211_MCGRP_MLME, gfp); 13276 return; 13277 13278 nla_put_failure: 13279 genlmsg_cancel(msg, hdr); 13280 nlmsg_free(msg); 13281 } 13282 EXPORT_SYMBOL(cfg80211_probe_status); 13283 13284 void cfg80211_report_obss_beacon(struct wiphy *wiphy, 13285 const u8 *frame, size_t len, 13286 int freq, int sig_dbm) 13287 { 13288 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13289 struct sk_buff *msg; 13290 void *hdr; 13291 struct cfg80211_beacon_registration *reg; 13292 13293 trace_cfg80211_report_obss_beacon(wiphy, frame, len, freq, sig_dbm); 13294 13295 spin_lock_bh(&rdev->beacon_registrations_lock); 13296 list_for_each_entry(reg, &rdev->beacon_registrations, list) { 13297 msg = nlmsg_new(len + 100, GFP_ATOMIC); 13298 if (!msg) { 13299 spin_unlock_bh(&rdev->beacon_registrations_lock); 13300 return; 13301 } 13302 13303 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FRAME); 13304 if (!hdr) 13305 goto nla_put_failure; 13306 13307 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13308 (freq && 13309 nla_put_u32(msg, NL80211_ATTR_WIPHY_FREQ, freq)) || 13310 (sig_dbm && 13311 nla_put_u32(msg, NL80211_ATTR_RX_SIGNAL_DBM, sig_dbm)) || 13312 nla_put(msg, NL80211_ATTR_FRAME, len, frame)) 13313 goto nla_put_failure; 13314 13315 genlmsg_end(msg, hdr); 13316 13317 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, reg->nlportid); 13318 } 13319 spin_unlock_bh(&rdev->beacon_registrations_lock); 13320 return; 13321 13322 nla_put_failure: 13323 spin_unlock_bh(&rdev->beacon_registrations_lock); 13324 if (hdr) 13325 genlmsg_cancel(msg, hdr); 13326 nlmsg_free(msg); 13327 } 13328 EXPORT_SYMBOL(cfg80211_report_obss_beacon); 13329 13330 #ifdef CONFIG_PM 13331 static int cfg80211_net_detect_results(struct sk_buff *msg, 13332 struct cfg80211_wowlan_wakeup *wakeup) 13333 { 13334 struct cfg80211_wowlan_nd_info *nd = wakeup->net_detect; 13335 struct nlattr *nl_results, *nl_match, *nl_freqs; 13336 int i, j; 13337 13338 nl_results = nla_nest_start( 13339 msg, NL80211_WOWLAN_TRIG_NET_DETECT_RESULTS); 13340 if (!nl_results) 13341 return -EMSGSIZE; 13342 13343 for (i = 0; i < nd->n_matches; i++) { 13344 struct cfg80211_wowlan_nd_match *match = nd->matches[i]; 13345 13346 nl_match = nla_nest_start(msg, i); 13347 if (!nl_match) 13348 break; 13349 13350 /* The SSID attribute is optional in nl80211, but for 13351 * simplicity reasons it's always present in the 13352 * cfg80211 structure. If a driver can't pass the 13353 * SSID, that needs to be changed. A zero length SSID 13354 * is still a valid SSID (wildcard), so it cannot be 13355 * used for this purpose. 13356 */ 13357 if (nla_put(msg, NL80211_ATTR_SSID, match->ssid.ssid_len, 13358 match->ssid.ssid)) { 13359 nla_nest_cancel(msg, nl_match); 13360 goto out; 13361 } 13362 13363 if (match->n_channels) { 13364 nl_freqs = nla_nest_start( 13365 msg, NL80211_ATTR_SCAN_FREQUENCIES); 13366 if (!nl_freqs) { 13367 nla_nest_cancel(msg, nl_match); 13368 goto out; 13369 } 13370 13371 for (j = 0; j < match->n_channels; j++) { 13372 if (nla_put_u32(msg, j, match->channels[j])) { 13373 nla_nest_cancel(msg, nl_freqs); 13374 nla_nest_cancel(msg, nl_match); 13375 goto out; 13376 } 13377 } 13378 13379 nla_nest_end(msg, nl_freqs); 13380 } 13381 13382 nla_nest_end(msg, nl_match); 13383 } 13384 13385 out: 13386 nla_nest_end(msg, nl_results); 13387 return 0; 13388 } 13389 13390 void cfg80211_report_wowlan_wakeup(struct wireless_dev *wdev, 13391 struct cfg80211_wowlan_wakeup *wakeup, 13392 gfp_t gfp) 13393 { 13394 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13395 struct sk_buff *msg; 13396 void *hdr; 13397 int size = 200; 13398 13399 trace_cfg80211_report_wowlan_wakeup(wdev->wiphy, wdev, wakeup); 13400 13401 if (wakeup) 13402 size += wakeup->packet_present_len; 13403 13404 msg = nlmsg_new(size, gfp); 13405 if (!msg) 13406 return; 13407 13408 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_SET_WOWLAN); 13409 if (!hdr) 13410 goto free_msg; 13411 13412 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13413 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13414 NL80211_ATTR_PAD)) 13415 goto free_msg; 13416 13417 if (wdev->netdev && nla_put_u32(msg, NL80211_ATTR_IFINDEX, 13418 wdev->netdev->ifindex)) 13419 goto free_msg; 13420 13421 if (wakeup) { 13422 struct nlattr *reasons; 13423 13424 reasons = nla_nest_start(msg, NL80211_ATTR_WOWLAN_TRIGGERS); 13425 if (!reasons) 13426 goto free_msg; 13427 13428 if (wakeup->disconnect && 13429 nla_put_flag(msg, NL80211_WOWLAN_TRIG_DISCONNECT)) 13430 goto free_msg; 13431 if (wakeup->magic_pkt && 13432 nla_put_flag(msg, NL80211_WOWLAN_TRIG_MAGIC_PKT)) 13433 goto free_msg; 13434 if (wakeup->gtk_rekey_failure && 13435 nla_put_flag(msg, NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE)) 13436 goto free_msg; 13437 if (wakeup->eap_identity_req && 13438 nla_put_flag(msg, NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST)) 13439 goto free_msg; 13440 if (wakeup->four_way_handshake && 13441 nla_put_flag(msg, NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE)) 13442 goto free_msg; 13443 if (wakeup->rfkill_release && 13444 nla_put_flag(msg, NL80211_WOWLAN_TRIG_RFKILL_RELEASE)) 13445 goto free_msg; 13446 13447 if (wakeup->pattern_idx >= 0 && 13448 nla_put_u32(msg, NL80211_WOWLAN_TRIG_PKT_PATTERN, 13449 wakeup->pattern_idx)) 13450 goto free_msg; 13451 13452 if (wakeup->tcp_match && 13453 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_MATCH)) 13454 goto free_msg; 13455 13456 if (wakeup->tcp_connlost && 13457 nla_put_flag(msg, NL80211_WOWLAN_TRIG_WAKEUP_TCP_CONNLOST)) 13458 goto free_msg; 13459 13460 if (wakeup->tcp_nomoretokens && 13461 nla_put_flag(msg, 13462 NL80211_WOWLAN_TRIG_WAKEUP_TCP_NOMORETOKENS)) 13463 goto free_msg; 13464 13465 if (wakeup->packet) { 13466 u32 pkt_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211; 13467 u32 len_attr = NL80211_WOWLAN_TRIG_WAKEUP_PKT_80211_LEN; 13468 13469 if (!wakeup->packet_80211) { 13470 pkt_attr = 13471 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023; 13472 len_attr = 13473 NL80211_WOWLAN_TRIG_WAKEUP_PKT_8023_LEN; 13474 } 13475 13476 if (wakeup->packet_len && 13477 nla_put_u32(msg, len_attr, wakeup->packet_len)) 13478 goto free_msg; 13479 13480 if (nla_put(msg, pkt_attr, wakeup->packet_present_len, 13481 wakeup->packet)) 13482 goto free_msg; 13483 } 13484 13485 if (wakeup->net_detect && 13486 cfg80211_net_detect_results(msg, wakeup)) 13487 goto free_msg; 13488 13489 nla_nest_end(msg, reasons); 13490 } 13491 13492 genlmsg_end(msg, hdr); 13493 13494 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13495 NL80211_MCGRP_MLME, gfp); 13496 return; 13497 13498 free_msg: 13499 nlmsg_free(msg); 13500 } 13501 EXPORT_SYMBOL(cfg80211_report_wowlan_wakeup); 13502 #endif 13503 13504 void cfg80211_tdls_oper_request(struct net_device *dev, const u8 *peer, 13505 enum nl80211_tdls_operation oper, 13506 u16 reason_code, gfp_t gfp) 13507 { 13508 struct wireless_dev *wdev = dev->ieee80211_ptr; 13509 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wdev->wiphy); 13510 struct sk_buff *msg; 13511 void *hdr; 13512 13513 trace_cfg80211_tdls_oper_request(wdev->wiphy, dev, peer, oper, 13514 reason_code); 13515 13516 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13517 if (!msg) 13518 return; 13519 13520 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_TDLS_OPER); 13521 if (!hdr) { 13522 nlmsg_free(msg); 13523 return; 13524 } 13525 13526 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13527 nla_put_u32(msg, NL80211_ATTR_IFINDEX, dev->ifindex) || 13528 nla_put_u8(msg, NL80211_ATTR_TDLS_OPERATION, oper) || 13529 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, peer) || 13530 (reason_code > 0 && 13531 nla_put_u16(msg, NL80211_ATTR_REASON_CODE, reason_code))) 13532 goto nla_put_failure; 13533 13534 genlmsg_end(msg, hdr); 13535 13536 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13537 NL80211_MCGRP_MLME, gfp); 13538 return; 13539 13540 nla_put_failure: 13541 genlmsg_cancel(msg, hdr); 13542 nlmsg_free(msg); 13543 } 13544 EXPORT_SYMBOL(cfg80211_tdls_oper_request); 13545 13546 static int nl80211_netlink_notify(struct notifier_block * nb, 13547 unsigned long state, 13548 void *_notify) 13549 { 13550 struct netlink_notify *notify = _notify; 13551 struct cfg80211_registered_device *rdev; 13552 struct wireless_dev *wdev; 13553 struct cfg80211_beacon_registration *reg, *tmp; 13554 13555 if (state != NETLINK_URELEASE || notify->protocol != NETLINK_GENERIC) 13556 return NOTIFY_DONE; 13557 13558 rcu_read_lock(); 13559 13560 list_for_each_entry_rcu(rdev, &cfg80211_rdev_list, list) { 13561 bool schedule_destroy_work = false; 13562 bool schedule_scan_stop = false; 13563 struct cfg80211_sched_scan_request *sched_scan_req = 13564 rcu_dereference(rdev->sched_scan_req); 13565 13566 if (sched_scan_req && notify->portid && 13567 sched_scan_req->owner_nlportid == notify->portid) 13568 schedule_scan_stop = true; 13569 13570 list_for_each_entry_rcu(wdev, &rdev->wiphy.wdev_list, list) { 13571 cfg80211_mlme_unregister_socket(wdev, notify->portid); 13572 13573 if (wdev->owner_nlportid == notify->portid) 13574 schedule_destroy_work = true; 13575 } 13576 13577 spin_lock_bh(&rdev->beacon_registrations_lock); 13578 list_for_each_entry_safe(reg, tmp, &rdev->beacon_registrations, 13579 list) { 13580 if (reg->nlportid == notify->portid) { 13581 list_del(®->list); 13582 kfree(reg); 13583 break; 13584 } 13585 } 13586 spin_unlock_bh(&rdev->beacon_registrations_lock); 13587 13588 if (schedule_destroy_work) { 13589 struct cfg80211_iface_destroy *destroy; 13590 13591 destroy = kzalloc(sizeof(*destroy), GFP_ATOMIC); 13592 if (destroy) { 13593 destroy->nlportid = notify->portid; 13594 spin_lock(&rdev->destroy_list_lock); 13595 list_add(&destroy->list, &rdev->destroy_list); 13596 spin_unlock(&rdev->destroy_list_lock); 13597 schedule_work(&rdev->destroy_work); 13598 } 13599 } else if (schedule_scan_stop) { 13600 sched_scan_req->owner_nlportid = 0; 13601 13602 if (rdev->ops->sched_scan_stop && 13603 rdev->wiphy.flags & WIPHY_FLAG_SUPPORTS_SCHED_SCAN) 13604 schedule_work(&rdev->sched_scan_stop_wk); 13605 } 13606 } 13607 13608 rcu_read_unlock(); 13609 13610 /* 13611 * It is possible that the user space process that is controlling the 13612 * indoor setting disappeared, so notify the regulatory core. 13613 */ 13614 regulatory_netlink_notify(notify->portid); 13615 return NOTIFY_OK; 13616 } 13617 13618 static struct notifier_block nl80211_netlink_notifier = { 13619 .notifier_call = nl80211_netlink_notify, 13620 }; 13621 13622 void cfg80211_ft_event(struct net_device *netdev, 13623 struct cfg80211_ft_event_params *ft_event) 13624 { 13625 struct wiphy *wiphy = netdev->ieee80211_ptr->wiphy; 13626 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13627 struct sk_buff *msg; 13628 void *hdr; 13629 13630 trace_cfg80211_ft_event(wiphy, netdev, ft_event); 13631 13632 if (!ft_event->target_ap) 13633 return; 13634 13635 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13636 if (!msg) 13637 return; 13638 13639 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_FT_EVENT); 13640 if (!hdr) 13641 goto out; 13642 13643 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13644 nla_put_u32(msg, NL80211_ATTR_IFINDEX, netdev->ifindex) || 13645 nla_put(msg, NL80211_ATTR_MAC, ETH_ALEN, ft_event->target_ap)) 13646 goto out; 13647 13648 if (ft_event->ies && 13649 nla_put(msg, NL80211_ATTR_IE, ft_event->ies_len, ft_event->ies)) 13650 goto out; 13651 if (ft_event->ric_ies && 13652 nla_put(msg, NL80211_ATTR_IE_RIC, ft_event->ric_ies_len, 13653 ft_event->ric_ies)) 13654 goto out; 13655 13656 genlmsg_end(msg, hdr); 13657 13658 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(&rdev->wiphy), msg, 0, 13659 NL80211_MCGRP_MLME, GFP_KERNEL); 13660 return; 13661 out: 13662 nlmsg_free(msg); 13663 } 13664 EXPORT_SYMBOL(cfg80211_ft_event); 13665 13666 void cfg80211_crit_proto_stopped(struct wireless_dev *wdev, gfp_t gfp) 13667 { 13668 struct cfg80211_registered_device *rdev; 13669 struct sk_buff *msg; 13670 void *hdr; 13671 u32 nlportid; 13672 13673 rdev = wiphy_to_rdev(wdev->wiphy); 13674 if (!rdev->crit_proto_nlportid) 13675 return; 13676 13677 nlportid = rdev->crit_proto_nlportid; 13678 rdev->crit_proto_nlportid = 0; 13679 13680 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, gfp); 13681 if (!msg) 13682 return; 13683 13684 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_CRIT_PROTOCOL_STOP); 13685 if (!hdr) 13686 goto nla_put_failure; 13687 13688 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13689 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13690 NL80211_ATTR_PAD)) 13691 goto nla_put_failure; 13692 13693 genlmsg_end(msg, hdr); 13694 13695 genlmsg_unicast(wiphy_net(&rdev->wiphy), msg, nlportid); 13696 return; 13697 13698 nla_put_failure: 13699 if (hdr) 13700 genlmsg_cancel(msg, hdr); 13701 nlmsg_free(msg); 13702 } 13703 EXPORT_SYMBOL(cfg80211_crit_proto_stopped); 13704 13705 void nl80211_send_ap_stopped(struct wireless_dev *wdev) 13706 { 13707 struct wiphy *wiphy = wdev->wiphy; 13708 struct cfg80211_registered_device *rdev = wiphy_to_rdev(wiphy); 13709 struct sk_buff *msg; 13710 void *hdr; 13711 13712 msg = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL); 13713 if (!msg) 13714 return; 13715 13716 hdr = nl80211hdr_put(msg, 0, 0, 0, NL80211_CMD_STOP_AP); 13717 if (!hdr) 13718 goto out; 13719 13720 if (nla_put_u32(msg, NL80211_ATTR_WIPHY, rdev->wiphy_idx) || 13721 nla_put_u32(msg, NL80211_ATTR_IFINDEX, wdev->netdev->ifindex) || 13722 nla_put_u64_64bit(msg, NL80211_ATTR_WDEV, wdev_id(wdev), 13723 NL80211_ATTR_PAD)) 13724 goto out; 13725 13726 genlmsg_end(msg, hdr); 13727 13728 genlmsg_multicast_netns(&nl80211_fam, wiphy_net(wiphy), msg, 0, 13729 NL80211_MCGRP_MLME, GFP_KERNEL); 13730 return; 13731 out: 13732 nlmsg_free(msg); 13733 } 13734 13735 /* initialisation/exit functions */ 13736 13737 int nl80211_init(void) 13738 { 13739 int err; 13740 13741 err = genl_register_family_with_ops_groups(&nl80211_fam, nl80211_ops, 13742 nl80211_mcgrps); 13743 if (err) 13744 return err; 13745 13746 err = netlink_register_notifier(&nl80211_netlink_notifier); 13747 if (err) 13748 goto err_out; 13749 13750 return 0; 13751 err_out: 13752 genl_unregister_family(&nl80211_fam); 13753 return err; 13754 } 13755 13756 void nl80211_exit(void) 13757 { 13758 netlink_unregister_notifier(&nl80211_netlink_notifier); 13759 genl_unregister_family(&nl80211_fam); 13760 } 13761