1/* 2 * Driver interaction with Linux nl80211/cfg80211 3 * Copyright (c) 2002-2014, Jouni Malinen <j@w1.fi> 4 * Copyright (c) 2003-2004, Instant802 Networks, Inc. 5 * Copyright (c) 2005-2006, Devicescape Software, Inc. 6 * Copyright (c) 2007, Johannes Berg <johannes@sipsolutions.net> 7 * Copyright (c) 2009-2010, Atheros Communications 8 * 9 * This software may be distributed under the terms of the BSD license. 10 * See README for more details. 11 */ 12 13#include "includes.h" 14#include <sys/ioctl.h> 15#include <sys/types.h> 16#include <sys/stat.h> 17#include <fcntl.h> 18#include <net/if.h> 19#include <netlink/genl/genl.h> 20#include <netlink/genl/family.h> 21#include <netlink/genl/ctrl.h> 22#ifdef CONFIG_LIBNL3_ROUTE 23#include <netlink/route/neighbour.h> 24#endif /* CONFIG_LIBNL3_ROUTE */ 25#include <linux/rtnetlink.h> 26#include <netpacket/packet.h> 27#include <linux/filter.h> 28#include <linux/errqueue.h> 29#include "nl80211_copy.h" 30 31#include "common.h" 32#include "eloop.h" 33#include "utils/list.h" 34#include "common/qca-vendor.h" 35#include "common/qca-vendor-attr.h" 36#include "common/ieee802_11_defs.h" 37#include "common/ieee802_11_common.h" 38#include "l2_packet/l2_packet.h" 39#include "netlink.h" 40#include "linux_ioctl.h" 41#include "radiotap.h" 42#include "radiotap_iter.h" 43#include "rfkill.h" 44#include "driver.h" 45 46#ifndef SO_WIFI_STATUS 47# if defined(__sparc__) 48# define SO_WIFI_STATUS 0x0025 49# elif defined(__parisc__) 50# define SO_WIFI_STATUS 0x4022 51# else 52# define SO_WIFI_STATUS 41 53# endif 54 55# define SCM_WIFI_STATUS SO_WIFI_STATUS 56#endif 57 58#ifndef SO_EE_ORIGIN_TXSTATUS 59#define SO_EE_ORIGIN_TXSTATUS 4 60#endif 61 62#ifndef PACKET_TX_TIMESTAMP 63#define PACKET_TX_TIMESTAMP 16 64#endif 65 66#ifdef ANDROID 67#include "android_drv.h" 68#endif /* ANDROID */ 69#ifdef CONFIG_LIBNL20 70/* libnl 2.0 compatibility code */ 71#define nl_handle nl_sock 72#define nl80211_handle_alloc nl_socket_alloc_cb 73#define nl80211_handle_destroy nl_socket_free 74#else 75/* 76 * libnl 1.1 has a bug, it tries to allocate socket numbers densely 77 * but when you free a socket again it will mess up its bitmap and 78 * and use the wrong number the next time it needs a socket ID. 79 * Therefore, we wrap the handle alloc/destroy and add our own pid 80 * accounting. 81 */ 82static uint32_t port_bitmap[32] = { 0 }; 83 84static struct nl_handle *nl80211_handle_alloc(void *cb) 85{ 86 struct nl_handle *handle; 87 uint32_t pid = getpid() & 0x3FFFFF; 88 int i; 89 90 handle = nl_handle_alloc_cb(cb); 91 92 for (i = 0; i < 1024; i++) { 93 if (port_bitmap[i / 32] & (1 << (i % 32))) 94 continue; 95 port_bitmap[i / 32] |= 1 << (i % 32); 96 pid += i << 22; 97 break; 98 } 99 100 nl_socket_set_local_port(handle, pid); 101 102 return handle; 103} 104 105static void nl80211_handle_destroy(struct nl_handle *handle) 106{ 107 uint32_t port = nl_socket_get_local_port(handle); 108 109 port >>= 22; 110 port_bitmap[port / 32] &= ~(1 << (port % 32)); 111 112 nl_handle_destroy(handle); 113} 114#endif /* CONFIG_LIBNL20 */ 115 116 117#ifdef ANDROID 118/* system/core/libnl_2 does not include nl_socket_set_nonblocking() */ 119static int android_nl_socket_set_nonblocking(struct nl_handle *handle) 120{ 121 return fcntl(nl_socket_get_fd(handle), F_SETFL, O_NONBLOCK); 122} 123#undef nl_socket_set_nonblocking 124#define nl_socket_set_nonblocking(h) android_nl_socket_set_nonblocking(h) 125#endif /* ANDROID */ 126 127 128static struct nl_handle * nl_create_handle(struct nl_cb *cb, const char *dbg) 129{ 130 struct nl_handle *handle; 131 132 handle = nl80211_handle_alloc(cb); 133 if (handle == NULL) { 134 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 135 "callbacks (%s)", dbg); 136 return NULL; 137 } 138 139 if (genl_connect(handle)) { 140 wpa_printf(MSG_ERROR, "nl80211: Failed to connect to generic " 141 "netlink (%s)", dbg); 142 nl80211_handle_destroy(handle); 143 return NULL; 144 } 145 146 return handle; 147} 148 149 150static void nl_destroy_handles(struct nl_handle **handle) 151{ 152 if (*handle == NULL) 153 return; 154 nl80211_handle_destroy(*handle); 155 *handle = NULL; 156} 157 158 159#if __WORDSIZE == 64 160#define ELOOP_SOCKET_INVALID (intptr_t) 0x8888888888888889ULL 161#else 162#define ELOOP_SOCKET_INVALID (intptr_t) 0x88888889ULL 163#endif 164 165static void nl80211_register_eloop_read(struct nl_handle **handle, 166 eloop_sock_handler handler, 167 void *eloop_data) 168{ 169 nl_socket_set_nonblocking(*handle); 170 eloop_register_read_sock(nl_socket_get_fd(*handle), handler, 171 eloop_data, *handle); 172 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 173} 174 175 176static void nl80211_destroy_eloop_handle(struct nl_handle **handle) 177{ 178 *handle = (void *) (((intptr_t) *handle) ^ ELOOP_SOCKET_INVALID); 179 eloop_unregister_read_sock(nl_socket_get_fd(*handle)); 180 nl_destroy_handles(handle); 181} 182 183 184#ifndef IFF_LOWER_UP 185#define IFF_LOWER_UP 0x10000 /* driver signals L1 up */ 186#endif 187#ifndef IFF_DORMANT 188#define IFF_DORMANT 0x20000 /* driver signals dormant */ 189#endif 190 191#ifndef IF_OPER_DORMANT 192#define IF_OPER_DORMANT 5 193#endif 194#ifndef IF_OPER_UP 195#define IF_OPER_UP 6 196#endif 197 198struct nl80211_global { 199 struct dl_list interfaces; 200 int if_add_ifindex; 201 u64 if_add_wdevid; 202 int if_add_wdevid_set; 203 struct netlink_data *netlink; 204 struct nl_cb *nl_cb; 205 struct nl_handle *nl; 206 int nl80211_id; 207 int ioctl_sock; /* socket for ioctl() use */ 208 209 struct nl_handle *nl_event; 210}; 211 212struct nl80211_wiphy_data { 213 struct dl_list list; 214 struct dl_list bsss; 215 struct dl_list drvs; 216 217 struct nl_handle *nl_beacons; 218 struct nl_cb *nl_cb; 219 220 int wiphy_idx; 221}; 222 223static void nl80211_global_deinit(void *priv); 224 225struct i802_bss { 226 struct wpa_driver_nl80211_data *drv; 227 struct i802_bss *next; 228 int ifindex; 229 u64 wdev_id; 230 char ifname[IFNAMSIZ + 1]; 231 char brname[IFNAMSIZ]; 232 unsigned int beacon_set:1; 233 unsigned int added_if_into_bridge:1; 234 unsigned int added_bridge:1; 235 unsigned int in_deinit:1; 236 unsigned int wdev_id_set:1; 237 unsigned int added_if:1; 238 unsigned int static_ap:1; 239 240 u8 addr[ETH_ALEN]; 241 242 int freq; 243 int bandwidth; 244 int if_dynamic; 245 246 void *ctx; 247 struct nl_handle *nl_preq, *nl_mgmt; 248 struct nl_cb *nl_cb; 249 250 struct nl80211_wiphy_data *wiphy_data; 251 struct dl_list wiphy_list; 252}; 253 254struct wpa_driver_nl80211_data { 255 struct nl80211_global *global; 256 struct dl_list list; 257 struct dl_list wiphy_list; 258 char phyname[32]; 259 u8 perm_addr[ETH_ALEN]; 260 void *ctx; 261 int ifindex; 262 int if_removed; 263 int if_disabled; 264 int ignore_if_down_event; 265 struct rfkill_data *rfkill; 266 struct wpa_driver_capa capa; 267 u8 *extended_capa, *extended_capa_mask; 268 unsigned int extended_capa_len; 269 int has_capability; 270 271 int operstate; 272 273 int scan_complete_events; 274 enum scan_states { 275 NO_SCAN, SCAN_REQUESTED, SCAN_STARTED, SCAN_COMPLETED, 276 SCAN_ABORTED, SCHED_SCAN_STARTED, SCHED_SCAN_STOPPED, 277 SCHED_SCAN_RESULTS 278 } scan_state; 279 280 struct nl_cb *nl_cb; 281 282 u8 auth_bssid[ETH_ALEN]; 283 u8 auth_attempt_bssid[ETH_ALEN]; 284 u8 bssid[ETH_ALEN]; 285 u8 prev_bssid[ETH_ALEN]; 286 int associated; 287 u8 ssid[32]; 288 size_t ssid_len; 289 enum nl80211_iftype nlmode; 290 enum nl80211_iftype ap_scan_as_station; 291 unsigned int assoc_freq; 292 293 int monitor_sock; 294 int monitor_ifidx; 295 int monitor_refcount; 296 297 unsigned int disabled_11b_rates:1; 298 unsigned int pending_remain_on_chan:1; 299 unsigned int in_interface_list:1; 300 unsigned int device_ap_sme:1; 301 unsigned int poll_command_supported:1; 302 unsigned int data_tx_status:1; 303 unsigned int scan_for_auth:1; 304 unsigned int retry_auth:1; 305 unsigned int use_monitor:1; 306 unsigned int ignore_next_local_disconnect:1; 307 unsigned int ignore_next_local_deauth:1; 308 unsigned int allow_p2p_device:1; 309 unsigned int hostapd:1; 310 unsigned int start_mode_ap:1; 311 unsigned int start_iface_up:1; 312 unsigned int test_use_roc_tx:1; 313 unsigned int ignore_deauth_event:1; 314 unsigned int roaming_vendor_cmd_avail:1; 315 unsigned int dfs_vendor_cmd_avail:1; 316 unsigned int have_low_prio_scan:1; 317 unsigned int force_connect_cmd:1; 318 unsigned int addr_changed:1; 319 320 u64 remain_on_chan_cookie; 321 u64 send_action_cookie; 322 323 unsigned int last_mgmt_freq; 324 325 struct wpa_driver_scan_filter *filter_ssids; 326 size_t num_filter_ssids; 327 328 struct i802_bss *first_bss; 329 330 int eapol_tx_sock; 331 332 int eapol_sock; /* socket for EAPOL frames */ 333 334 struct nl_handle *rtnl_sk; /* nl_sock for NETLINK_ROUTE */ 335 336 int default_if_indices[16]; 337 int *if_indices; 338 int num_if_indices; 339 340 /* From failed authentication command */ 341 int auth_freq; 342 u8 auth_bssid_[ETH_ALEN]; 343 u8 auth_ssid[32]; 344 size_t auth_ssid_len; 345 int auth_alg; 346 u8 *auth_ie; 347 size_t auth_ie_len; 348 u8 auth_wep_key[4][16]; 349 size_t auth_wep_key_len[4]; 350 int auth_wep_tx_keyidx; 351 int auth_local_state_change; 352 int auth_p2p; 353}; 354 355 356static void wpa_driver_nl80211_deinit(struct i802_bss *bss); 357static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, 358 void *timeout_ctx); 359static int wpa_driver_nl80211_set_mode(struct i802_bss *bss, 360 enum nl80211_iftype nlmode); 361static int wpa_driver_nl80211_set_mode_ibss(struct i802_bss *bss, 362 struct hostapd_freq_params *freq); 363 364static int 365wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 366 const u8 *set_addr, int first); 367static int wpa_driver_nl80211_mlme(struct wpa_driver_nl80211_data *drv, 368 const u8 *addr, int cmd, u16 reason_code, 369 int local_state_change); 370static void nl80211_remove_monitor_interface( 371 struct wpa_driver_nl80211_data *drv); 372static int nl80211_send_frame_cmd(struct i802_bss *bss, 373 unsigned int freq, unsigned int wait, 374 const u8 *buf, size_t buf_len, u64 *cookie, 375 int no_cck, int no_ack, int offchanok); 376static int nl80211_register_frame(struct i802_bss *bss, 377 struct nl_handle *hl_handle, 378 u16 type, const u8 *match, size_t match_len); 379static int wpa_driver_nl80211_probe_req_report(struct i802_bss *bss, 380 int report); 381#ifdef ANDROID 382static int android_pno_start(struct i802_bss *bss, 383 struct wpa_driver_scan_params *params); 384static int android_pno_stop(struct i802_bss *bss); 385extern int wpa_driver_nl80211_driver_cmd(void *priv, char *cmd, char *buf, 386 size_t buf_len); 387#endif /* ANDROID */ 388#ifdef ANDROID_P2P 389#ifdef ANDROID_P2P_STUB 390int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration) { 391 return 0; 392} 393int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len) { 394 return 0; 395} 396int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow) { 397 return -1; 398} 399int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 400 const struct wpabuf *proberesp, 401 const struct wpabuf *assocresp) { 402 return 0; 403} 404#else /* ANDROID_P2P_STUB */ 405int wpa_driver_set_p2p_noa(void *priv, u8 count, int start, int duration); 406int wpa_driver_get_p2p_noa(void *priv, u8 *buf, size_t len); 407int wpa_driver_set_p2p_ps(void *priv, int legacy_ps, int opp_ps, int ctwindow); 408int wpa_driver_set_ap_wps_p2p_ie(void *priv, const struct wpabuf *beacon, 409 const struct wpabuf *proberesp, 410 const struct wpabuf *assocresp); 411#endif /* ANDROID_P2P_STUB */ 412#endif /* ANDROID_P2P */ 413 414static void add_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 415static void del_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 416static int have_ifidx(struct wpa_driver_nl80211_data *drv, int ifidx); 417static int wpa_driver_nl80211_if_remove(struct i802_bss *bss, 418 enum wpa_driver_if_type type, 419 const char *ifname); 420 421static int nl80211_set_channel(struct i802_bss *bss, 422 struct hostapd_freq_params *freq, int set_chan); 423static int nl80211_disable_11b_rates(struct wpa_driver_nl80211_data *drv, 424 int ifindex, int disabled); 425 426static int nl80211_leave_ibss(struct wpa_driver_nl80211_data *drv); 427static int wpa_driver_nl80211_authenticate_retry( 428 struct wpa_driver_nl80211_data *drv); 429 430static int i802_set_freq(void *priv, struct hostapd_freq_params *freq); 431static int i802_set_iface_flags(struct i802_bss *bss, int up); 432 433 434static const char * nl80211_command_to_string(enum nl80211_commands cmd) 435{ 436#define C2S(x) case x: return #x; 437 switch (cmd) { 438 C2S(NL80211_CMD_UNSPEC) 439 C2S(NL80211_CMD_GET_WIPHY) 440 C2S(NL80211_CMD_SET_WIPHY) 441 C2S(NL80211_CMD_NEW_WIPHY) 442 C2S(NL80211_CMD_DEL_WIPHY) 443 C2S(NL80211_CMD_GET_INTERFACE) 444 C2S(NL80211_CMD_SET_INTERFACE) 445 C2S(NL80211_CMD_NEW_INTERFACE) 446 C2S(NL80211_CMD_DEL_INTERFACE) 447 C2S(NL80211_CMD_GET_KEY) 448 C2S(NL80211_CMD_SET_KEY) 449 C2S(NL80211_CMD_NEW_KEY) 450 C2S(NL80211_CMD_DEL_KEY) 451 C2S(NL80211_CMD_GET_BEACON) 452 C2S(NL80211_CMD_SET_BEACON) 453 C2S(NL80211_CMD_START_AP) 454 C2S(NL80211_CMD_STOP_AP) 455 C2S(NL80211_CMD_GET_STATION) 456 C2S(NL80211_CMD_SET_STATION) 457 C2S(NL80211_CMD_NEW_STATION) 458 C2S(NL80211_CMD_DEL_STATION) 459 C2S(NL80211_CMD_GET_MPATH) 460 C2S(NL80211_CMD_SET_MPATH) 461 C2S(NL80211_CMD_NEW_MPATH) 462 C2S(NL80211_CMD_DEL_MPATH) 463 C2S(NL80211_CMD_SET_BSS) 464 C2S(NL80211_CMD_SET_REG) 465 C2S(NL80211_CMD_REQ_SET_REG) 466 C2S(NL80211_CMD_GET_MESH_CONFIG) 467 C2S(NL80211_CMD_SET_MESH_CONFIG) 468 C2S(NL80211_CMD_SET_MGMT_EXTRA_IE) 469 C2S(NL80211_CMD_GET_REG) 470 C2S(NL80211_CMD_GET_SCAN) 471 C2S(NL80211_CMD_TRIGGER_SCAN) 472 C2S(NL80211_CMD_NEW_SCAN_RESULTS) 473 C2S(NL80211_CMD_SCAN_ABORTED) 474 C2S(NL80211_CMD_REG_CHANGE) 475 C2S(NL80211_CMD_AUTHENTICATE) 476 C2S(NL80211_CMD_ASSOCIATE) 477 C2S(NL80211_CMD_DEAUTHENTICATE) 478 C2S(NL80211_CMD_DISASSOCIATE) 479 C2S(NL80211_CMD_MICHAEL_MIC_FAILURE) 480 C2S(NL80211_CMD_REG_BEACON_HINT) 481 C2S(NL80211_CMD_JOIN_IBSS) 482 C2S(NL80211_CMD_LEAVE_IBSS) 483 C2S(NL80211_CMD_TESTMODE) 484 C2S(NL80211_CMD_CONNECT) 485 C2S(NL80211_CMD_ROAM) 486 C2S(NL80211_CMD_DISCONNECT) 487 C2S(NL80211_CMD_SET_WIPHY_NETNS) 488 C2S(NL80211_CMD_GET_SURVEY) 489 C2S(NL80211_CMD_NEW_SURVEY_RESULTS) 490 C2S(NL80211_CMD_SET_PMKSA) 491 C2S(NL80211_CMD_DEL_PMKSA) 492 C2S(NL80211_CMD_FLUSH_PMKSA) 493 C2S(NL80211_CMD_REMAIN_ON_CHANNEL) 494 C2S(NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL) 495 C2S(NL80211_CMD_SET_TX_BITRATE_MASK) 496 C2S(NL80211_CMD_REGISTER_FRAME) 497 C2S(NL80211_CMD_FRAME) 498 C2S(NL80211_CMD_FRAME_TX_STATUS) 499 C2S(NL80211_CMD_SET_POWER_SAVE) 500 C2S(NL80211_CMD_GET_POWER_SAVE) 501 C2S(NL80211_CMD_SET_CQM) 502 C2S(NL80211_CMD_NOTIFY_CQM) 503 C2S(NL80211_CMD_SET_CHANNEL) 504 C2S(NL80211_CMD_SET_WDS_PEER) 505 C2S(NL80211_CMD_FRAME_WAIT_CANCEL) 506 C2S(NL80211_CMD_JOIN_MESH) 507 C2S(NL80211_CMD_LEAVE_MESH) 508 C2S(NL80211_CMD_UNPROT_DEAUTHENTICATE) 509 C2S(NL80211_CMD_UNPROT_DISASSOCIATE) 510 C2S(NL80211_CMD_NEW_PEER_CANDIDATE) 511 C2S(NL80211_CMD_GET_WOWLAN) 512 C2S(NL80211_CMD_SET_WOWLAN) 513 C2S(NL80211_CMD_START_SCHED_SCAN) 514 C2S(NL80211_CMD_STOP_SCHED_SCAN) 515 C2S(NL80211_CMD_SCHED_SCAN_RESULTS) 516 C2S(NL80211_CMD_SCHED_SCAN_STOPPED) 517 C2S(NL80211_CMD_SET_REKEY_OFFLOAD) 518 C2S(NL80211_CMD_PMKSA_CANDIDATE) 519 C2S(NL80211_CMD_TDLS_OPER) 520 C2S(NL80211_CMD_TDLS_MGMT) 521 C2S(NL80211_CMD_UNEXPECTED_FRAME) 522 C2S(NL80211_CMD_PROBE_CLIENT) 523 C2S(NL80211_CMD_REGISTER_BEACONS) 524 C2S(NL80211_CMD_UNEXPECTED_4ADDR_FRAME) 525 C2S(NL80211_CMD_SET_NOACK_MAP) 526 C2S(NL80211_CMD_CH_SWITCH_NOTIFY) 527 C2S(NL80211_CMD_START_P2P_DEVICE) 528 C2S(NL80211_CMD_STOP_P2P_DEVICE) 529 C2S(NL80211_CMD_CONN_FAILED) 530 C2S(NL80211_CMD_SET_MCAST_RATE) 531 C2S(NL80211_CMD_SET_MAC_ACL) 532 C2S(NL80211_CMD_RADAR_DETECT) 533 C2S(NL80211_CMD_GET_PROTOCOL_FEATURES) 534 C2S(NL80211_CMD_UPDATE_FT_IES) 535 C2S(NL80211_CMD_FT_EVENT) 536 C2S(NL80211_CMD_CRIT_PROTOCOL_START) 537 C2S(NL80211_CMD_CRIT_PROTOCOL_STOP) 538 C2S(NL80211_CMD_GET_COALESCE) 539 C2S(NL80211_CMD_SET_COALESCE) 540 C2S(NL80211_CMD_CHANNEL_SWITCH) 541 C2S(NL80211_CMD_VENDOR) 542 C2S(NL80211_CMD_SET_QOS_MAP) 543 default: 544 return "NL80211_CMD_UNKNOWN"; 545 } 546#undef C2S 547} 548 549 550/* Converts nl80211_chan_width to a common format */ 551static enum chan_width convert2width(int width) 552{ 553 switch (width) { 554 case NL80211_CHAN_WIDTH_20_NOHT: 555 return CHAN_WIDTH_20_NOHT; 556 case NL80211_CHAN_WIDTH_20: 557 return CHAN_WIDTH_20; 558 case NL80211_CHAN_WIDTH_40: 559 return CHAN_WIDTH_40; 560 case NL80211_CHAN_WIDTH_80: 561 return CHAN_WIDTH_80; 562 case NL80211_CHAN_WIDTH_80P80: 563 return CHAN_WIDTH_80P80; 564 case NL80211_CHAN_WIDTH_160: 565 return CHAN_WIDTH_160; 566 } 567 return CHAN_WIDTH_UNKNOWN; 568} 569 570 571static int is_ap_interface(enum nl80211_iftype nlmode) 572{ 573 return nlmode == NL80211_IFTYPE_AP || 574 nlmode == NL80211_IFTYPE_P2P_GO; 575} 576 577 578static int is_sta_interface(enum nl80211_iftype nlmode) 579{ 580 return nlmode == NL80211_IFTYPE_STATION || 581 nlmode == NL80211_IFTYPE_P2P_CLIENT; 582} 583 584 585static int is_p2p_net_interface(enum nl80211_iftype nlmode) 586{ 587 return nlmode == NL80211_IFTYPE_P2P_CLIENT || 588 nlmode == NL80211_IFTYPE_P2P_GO; 589} 590 591 592static struct i802_bss * get_bss_ifindex(struct wpa_driver_nl80211_data *drv, 593 int ifindex) 594{ 595 struct i802_bss *bss; 596 597 for (bss = drv->first_bss; bss; bss = bss->next) { 598 if (bss->ifindex == ifindex) 599 return bss; 600 } 601 602 return NULL; 603} 604 605 606static void nl80211_mark_disconnected(struct wpa_driver_nl80211_data *drv) 607{ 608 if (drv->associated) 609 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN); 610 drv->associated = 0; 611 os_memset(drv->bssid, 0, ETH_ALEN); 612} 613 614 615struct nl80211_bss_info_arg { 616 struct wpa_driver_nl80211_data *drv; 617 struct wpa_scan_results *res; 618 unsigned int assoc_freq; 619 unsigned int ibss_freq; 620 u8 assoc_bssid[ETH_ALEN]; 621}; 622 623static int bss_info_handler(struct nl_msg *msg, void *arg); 624 625 626/* nl80211 code */ 627static int ack_handler(struct nl_msg *msg, void *arg) 628{ 629 int *err = arg; 630 *err = 0; 631 return NL_STOP; 632} 633 634static int finish_handler(struct nl_msg *msg, void *arg) 635{ 636 int *ret = arg; 637 *ret = 0; 638 return NL_SKIP; 639} 640 641static int error_handler(struct sockaddr_nl *nla, struct nlmsgerr *err, 642 void *arg) 643{ 644 int *ret = arg; 645 *ret = err->error; 646 return NL_SKIP; 647} 648 649 650static int no_seq_check(struct nl_msg *msg, void *arg) 651{ 652 return NL_OK; 653} 654 655 656static int send_and_recv(struct nl80211_global *global, 657 struct nl_handle *nl_handle, struct nl_msg *msg, 658 int (*valid_handler)(struct nl_msg *, void *), 659 void *valid_data) 660{ 661 struct nl_cb *cb; 662 int err = -ENOMEM; 663 664 cb = nl_cb_clone(global->nl_cb); 665 if (!cb) 666 goto out; 667 668 err = nl_send_auto_complete(nl_handle, msg); 669 if (err < 0) 670 goto out; 671 672 err = 1; 673 674 nl_cb_err(cb, NL_CB_CUSTOM, error_handler, &err); 675 nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, finish_handler, &err); 676 nl_cb_set(cb, NL_CB_ACK, NL_CB_CUSTOM, ack_handler, &err); 677 678 if (valid_handler) 679 nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, 680 valid_handler, valid_data); 681 682 while (err > 0) { 683 int res = nl_recvmsgs(nl_handle, cb); 684 if (res < 0) { 685 wpa_printf(MSG_INFO, 686 "nl80211: %s->nl_recvmsgs failed: %d", 687 __func__, res); 688 } 689 } 690 out: 691 nl_cb_put(cb); 692 nlmsg_free(msg); 693 return err; 694} 695 696 697static int send_and_recv_msgs_global(struct nl80211_global *global, 698 struct nl_msg *msg, 699 int (*valid_handler)(struct nl_msg *, void *), 700 void *valid_data) 701{ 702 return send_and_recv(global, global->nl, msg, valid_handler, 703 valid_data); 704} 705 706 707static int send_and_recv_msgs(struct wpa_driver_nl80211_data *drv, 708 struct nl_msg *msg, 709 int (*valid_handler)(struct nl_msg *, void *), 710 void *valid_data) 711{ 712 return send_and_recv(drv->global, drv->global->nl, msg, 713 valid_handler, valid_data); 714} 715 716 717struct family_data { 718 const char *group; 719 int id; 720}; 721 722 723static int nl80211_set_iface_id(struct nl_msg *msg, struct i802_bss *bss) 724{ 725 if (bss->wdev_id_set) 726 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 727 else 728 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 729 return 0; 730 731nla_put_failure: 732 return -1; 733} 734 735 736static int family_handler(struct nl_msg *msg, void *arg) 737{ 738 struct family_data *res = arg; 739 struct nlattr *tb[CTRL_ATTR_MAX + 1]; 740 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 741 struct nlattr *mcgrp; 742 int i; 743 744 nla_parse(tb, CTRL_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 745 genlmsg_attrlen(gnlh, 0), NULL); 746 if (!tb[CTRL_ATTR_MCAST_GROUPS]) 747 return NL_SKIP; 748 749 nla_for_each_nested(mcgrp, tb[CTRL_ATTR_MCAST_GROUPS], i) { 750 struct nlattr *tb2[CTRL_ATTR_MCAST_GRP_MAX + 1]; 751 nla_parse(tb2, CTRL_ATTR_MCAST_GRP_MAX, nla_data(mcgrp), 752 nla_len(mcgrp), NULL); 753 if (!tb2[CTRL_ATTR_MCAST_GRP_NAME] || 754 !tb2[CTRL_ATTR_MCAST_GRP_ID] || 755 os_strncmp(nla_data(tb2[CTRL_ATTR_MCAST_GRP_NAME]), 756 res->group, 757 nla_len(tb2[CTRL_ATTR_MCAST_GRP_NAME])) != 0) 758 continue; 759 res->id = nla_get_u32(tb2[CTRL_ATTR_MCAST_GRP_ID]); 760 break; 761 }; 762 763 return NL_SKIP; 764} 765 766 767static int nl_get_multicast_id(struct nl80211_global *global, 768 const char *family, const char *group) 769{ 770 struct nl_msg *msg; 771 int ret = -1; 772 struct family_data res = { group, -ENOENT }; 773 774 msg = nlmsg_alloc(); 775 if (!msg) 776 return -ENOMEM; 777 genlmsg_put(msg, 0, 0, genl_ctrl_resolve(global->nl, "nlctrl"), 778 0, 0, CTRL_CMD_GETFAMILY, 0); 779 NLA_PUT_STRING(msg, CTRL_ATTR_FAMILY_NAME, family); 780 781 ret = send_and_recv_msgs_global(global, msg, family_handler, &res); 782 msg = NULL; 783 if (ret == 0) 784 ret = res.id; 785 786nla_put_failure: 787 nlmsg_free(msg); 788 return ret; 789} 790 791 792static void * nl80211_cmd(struct wpa_driver_nl80211_data *drv, 793 struct nl_msg *msg, int flags, uint8_t cmd) 794{ 795 return genlmsg_put(msg, 0, 0, drv->global->nl80211_id, 796 0, flags, cmd, 0); 797} 798 799 800struct wiphy_idx_data { 801 int wiphy_idx; 802 enum nl80211_iftype nlmode; 803 u8 *macaddr; 804}; 805 806 807static int netdev_info_handler(struct nl_msg *msg, void *arg) 808{ 809 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 810 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 811 struct wiphy_idx_data *info = arg; 812 813 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 814 genlmsg_attrlen(gnlh, 0), NULL); 815 816 if (tb[NL80211_ATTR_WIPHY]) 817 info->wiphy_idx = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 818 819 if (tb[NL80211_ATTR_IFTYPE]) 820 info->nlmode = nla_get_u32(tb[NL80211_ATTR_IFTYPE]); 821 822 if (tb[NL80211_ATTR_MAC] && info->macaddr) 823 os_memcpy(info->macaddr, nla_data(tb[NL80211_ATTR_MAC]), 824 ETH_ALEN); 825 826 return NL_SKIP; 827} 828 829 830static int nl80211_get_wiphy_index(struct i802_bss *bss) 831{ 832 struct nl_msg *msg; 833 struct wiphy_idx_data data = { 834 .wiphy_idx = -1, 835 .macaddr = NULL, 836 }; 837 838 msg = nlmsg_alloc(); 839 if (!msg) 840 return NL80211_IFTYPE_UNSPECIFIED; 841 842 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 843 844 if (nl80211_set_iface_id(msg, bss) < 0) 845 goto nla_put_failure; 846 847 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 848 return data.wiphy_idx; 849 msg = NULL; 850nla_put_failure: 851 nlmsg_free(msg); 852 return -1; 853} 854 855 856static enum nl80211_iftype nl80211_get_ifmode(struct i802_bss *bss) 857{ 858 struct nl_msg *msg; 859 struct wiphy_idx_data data = { 860 .nlmode = NL80211_IFTYPE_UNSPECIFIED, 861 .macaddr = NULL, 862 }; 863 864 msg = nlmsg_alloc(); 865 if (!msg) 866 return -1; 867 868 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 869 870 if (nl80211_set_iface_id(msg, bss) < 0) 871 goto nla_put_failure; 872 873 if (send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data) == 0) 874 return data.nlmode; 875 msg = NULL; 876nla_put_failure: 877 nlmsg_free(msg); 878 return NL80211_IFTYPE_UNSPECIFIED; 879} 880 881 882static int nl80211_get_macaddr(struct i802_bss *bss) 883{ 884 struct nl_msg *msg; 885 struct wiphy_idx_data data = { 886 .macaddr = bss->addr, 887 }; 888 889 msg = nlmsg_alloc(); 890 if (!msg) 891 return NL80211_IFTYPE_UNSPECIFIED; 892 893 nl80211_cmd(bss->drv, msg, 0, NL80211_CMD_GET_INTERFACE); 894 if (nl80211_set_iface_id(msg, bss) < 0) 895 goto nla_put_failure; 896 897 return send_and_recv_msgs(bss->drv, msg, netdev_info_handler, &data); 898 899nla_put_failure: 900 nlmsg_free(msg); 901 return NL80211_IFTYPE_UNSPECIFIED; 902} 903 904 905static int nl80211_register_beacons(struct wpa_driver_nl80211_data *drv, 906 struct nl80211_wiphy_data *w) 907{ 908 struct nl_msg *msg; 909 int ret = -1; 910 911 msg = nlmsg_alloc(); 912 if (!msg) 913 return -1; 914 915 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_BEACONS); 916 917 NLA_PUT_U32(msg, NL80211_ATTR_WIPHY, w->wiphy_idx); 918 919 ret = send_and_recv(drv->global, w->nl_beacons, msg, NULL, NULL); 920 msg = NULL; 921 if (ret) { 922 wpa_printf(MSG_DEBUG, "nl80211: Register beacons command " 923 "failed: ret=%d (%s)", 924 ret, strerror(-ret)); 925 goto nla_put_failure; 926 } 927 ret = 0; 928nla_put_failure: 929 nlmsg_free(msg); 930 return ret; 931} 932 933 934static void nl80211_recv_beacons(int sock, void *eloop_ctx, void *handle) 935{ 936 struct nl80211_wiphy_data *w = eloop_ctx; 937 int res; 938 939 wpa_printf(MSG_EXCESSIVE, "nl80211: Beacon event message available"); 940 941 res = nl_recvmsgs(handle, w->nl_cb); 942 if (res < 0) { 943 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 944 __func__, res); 945 } 946} 947 948 949static int process_beacon_event(struct nl_msg *msg, void *arg) 950{ 951 struct nl80211_wiphy_data *w = arg; 952 struct wpa_driver_nl80211_data *drv; 953 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 954 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 955 union wpa_event_data event; 956 957 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 958 genlmsg_attrlen(gnlh, 0), NULL); 959 960 if (gnlh->cmd != NL80211_CMD_FRAME) { 961 wpa_printf(MSG_DEBUG, "nl80211: Unexpected beacon event? (%d)", 962 gnlh->cmd); 963 return NL_SKIP; 964 } 965 966 if (!tb[NL80211_ATTR_FRAME]) 967 return NL_SKIP; 968 969 dl_list_for_each(drv, &w->drvs, struct wpa_driver_nl80211_data, 970 wiphy_list) { 971 os_memset(&event, 0, sizeof(event)); 972 event.rx_mgmt.frame = nla_data(tb[NL80211_ATTR_FRAME]); 973 event.rx_mgmt.frame_len = nla_len(tb[NL80211_ATTR_FRAME]); 974 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 975 } 976 977 return NL_SKIP; 978} 979 980 981static struct nl80211_wiphy_data * 982nl80211_get_wiphy_data_ap(struct i802_bss *bss) 983{ 984 static DEFINE_DL_LIST(nl80211_wiphys); 985 struct nl80211_wiphy_data *w; 986 int wiphy_idx, found = 0; 987 struct i802_bss *tmp_bss; 988 989 if (bss->wiphy_data != NULL) 990 return bss->wiphy_data; 991 992 wiphy_idx = nl80211_get_wiphy_index(bss); 993 994 dl_list_for_each(w, &nl80211_wiphys, struct nl80211_wiphy_data, list) { 995 if (w->wiphy_idx == wiphy_idx) 996 goto add; 997 } 998 999 /* alloc new one */ 1000 w = os_zalloc(sizeof(*w)); 1001 if (w == NULL) 1002 return NULL; 1003 w->wiphy_idx = wiphy_idx; 1004 dl_list_init(&w->bsss); 1005 dl_list_init(&w->drvs); 1006 1007 w->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 1008 if (!w->nl_cb) { 1009 os_free(w); 1010 return NULL; 1011 } 1012 nl_cb_set(w->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, no_seq_check, NULL); 1013 nl_cb_set(w->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, process_beacon_event, 1014 w); 1015 1016 w->nl_beacons = nl_create_handle(bss->drv->global->nl_cb, 1017 "wiphy beacons"); 1018 if (w->nl_beacons == NULL) { 1019 os_free(w); 1020 return NULL; 1021 } 1022 1023 if (nl80211_register_beacons(bss->drv, w)) { 1024 nl_destroy_handles(&w->nl_beacons); 1025 os_free(w); 1026 return NULL; 1027 } 1028 1029 nl80211_register_eloop_read(&w->nl_beacons, nl80211_recv_beacons, w); 1030 1031 dl_list_add(&nl80211_wiphys, &w->list); 1032 1033add: 1034 /* drv entry for this bss already there? */ 1035 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 1036 if (tmp_bss->drv == bss->drv) { 1037 found = 1; 1038 break; 1039 } 1040 } 1041 /* if not add it */ 1042 if (!found) 1043 dl_list_add(&w->drvs, &bss->drv->wiphy_list); 1044 1045 dl_list_add(&w->bsss, &bss->wiphy_list); 1046 bss->wiphy_data = w; 1047 return w; 1048} 1049 1050 1051static void nl80211_put_wiphy_data_ap(struct i802_bss *bss) 1052{ 1053 struct nl80211_wiphy_data *w = bss->wiphy_data; 1054 struct i802_bss *tmp_bss; 1055 int found = 0; 1056 1057 if (w == NULL) 1058 return; 1059 bss->wiphy_data = NULL; 1060 dl_list_del(&bss->wiphy_list); 1061 1062 /* still any for this drv present? */ 1063 dl_list_for_each(tmp_bss, &w->bsss, struct i802_bss, wiphy_list) { 1064 if (tmp_bss->drv == bss->drv) { 1065 found = 1; 1066 break; 1067 } 1068 } 1069 /* if not remove it */ 1070 if (!found) 1071 dl_list_del(&bss->drv->wiphy_list); 1072 1073 if (!dl_list_empty(&w->bsss)) 1074 return; 1075 1076 nl80211_destroy_eloop_handle(&w->nl_beacons); 1077 1078 nl_cb_put(w->nl_cb); 1079 dl_list_del(&w->list); 1080 os_free(w); 1081} 1082 1083 1084static int wpa_driver_nl80211_get_bssid(void *priv, u8 *bssid) 1085{ 1086 struct i802_bss *bss = priv; 1087 struct wpa_driver_nl80211_data *drv = bss->drv; 1088 if (!drv->associated) 1089 return -1; 1090 os_memcpy(bssid, drv->bssid, ETH_ALEN); 1091 return 0; 1092} 1093 1094 1095static int wpa_driver_nl80211_get_ssid(void *priv, u8 *ssid) 1096{ 1097 struct i802_bss *bss = priv; 1098 struct wpa_driver_nl80211_data *drv = bss->drv; 1099 if (!drv->associated) 1100 return -1; 1101 os_memcpy(ssid, drv->ssid, drv->ssid_len); 1102 return drv->ssid_len; 1103} 1104 1105 1106static void wpa_driver_nl80211_event_newlink( 1107 struct wpa_driver_nl80211_data *drv, char *ifname) 1108{ 1109 union wpa_event_data event; 1110 1111 if (os_strcmp(drv->first_bss->ifname, ifname) == 0) { 1112 if (if_nametoindex(drv->first_bss->ifname) == 0) { 1113 wpa_printf(MSG_DEBUG, "nl80211: Interface %s does not exist - ignore RTM_NEWLINK", 1114 drv->first_bss->ifname); 1115 return; 1116 } 1117 if (!drv->if_removed) 1118 return; 1119 wpa_printf(MSG_DEBUG, "nl80211: Mark if_removed=0 for %s based on RTM_NEWLINK event", 1120 drv->first_bss->ifname); 1121 drv->if_removed = 0; 1122 } 1123 1124 os_memset(&event, 0, sizeof(event)); 1125 os_strlcpy(event.interface_status.ifname, ifname, 1126 sizeof(event.interface_status.ifname)); 1127 event.interface_status.ievent = EVENT_INTERFACE_ADDED; 1128 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 1129} 1130 1131 1132static void wpa_driver_nl80211_event_dellink( 1133 struct wpa_driver_nl80211_data *drv, char *ifname) 1134{ 1135 union wpa_event_data event; 1136 1137 if (os_strcmp(drv->first_bss->ifname, ifname) == 0) { 1138 if (drv->if_removed) { 1139 wpa_printf(MSG_DEBUG, "nl80211: if_removed already set - ignore RTM_DELLINK event for %s", 1140 ifname); 1141 return; 1142 } 1143 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed - mark if_removed=1", 1144 ifname); 1145 drv->if_removed = 1; 1146 } else { 1147 wpa_printf(MSG_DEBUG, "RTM_DELLINK: Interface '%s' removed", 1148 ifname); 1149 } 1150 1151 os_memset(&event, 0, sizeof(event)); 1152 os_strlcpy(event.interface_status.ifname, ifname, 1153 sizeof(event.interface_status.ifname)); 1154 event.interface_status.ievent = EVENT_INTERFACE_REMOVED; 1155 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_STATUS, &event); 1156} 1157 1158 1159static int wpa_driver_nl80211_own_ifname(struct wpa_driver_nl80211_data *drv, 1160 u8 *buf, size_t len) 1161{ 1162 int attrlen, rta_len; 1163 struct rtattr *attr; 1164 1165 attrlen = len; 1166 attr = (struct rtattr *) buf; 1167 1168 rta_len = RTA_ALIGN(sizeof(struct rtattr)); 1169 while (RTA_OK(attr, attrlen)) { 1170 if (attr->rta_type == IFLA_IFNAME) { 1171 if (os_strcmp(((char *) attr) + rta_len, 1172 drv->first_bss->ifname) == 0) 1173 return 1; 1174 else 1175 break; 1176 } 1177 attr = RTA_NEXT(attr, attrlen); 1178 } 1179 1180 return 0; 1181} 1182 1183 1184static int wpa_driver_nl80211_own_ifindex(struct wpa_driver_nl80211_data *drv, 1185 int ifindex, u8 *buf, size_t len) 1186{ 1187 if (drv->ifindex == ifindex) 1188 return 1; 1189 1190 if (drv->if_removed && wpa_driver_nl80211_own_ifname(drv, buf, len)) { 1191 wpa_printf(MSG_DEBUG, "nl80211: Update ifindex for a removed " 1192 "interface"); 1193 wpa_driver_nl80211_finish_drv_init(drv, NULL, 0); 1194 return 1; 1195 } 1196 1197 return 0; 1198} 1199 1200 1201static struct wpa_driver_nl80211_data * 1202nl80211_find_drv(struct nl80211_global *global, int idx, u8 *buf, size_t len) 1203{ 1204 struct wpa_driver_nl80211_data *drv; 1205 dl_list_for_each(drv, &global->interfaces, 1206 struct wpa_driver_nl80211_data, list) { 1207 if (wpa_driver_nl80211_own_ifindex(drv, idx, buf, len) || 1208 have_ifidx(drv, idx)) 1209 return drv; 1210 } 1211 return NULL; 1212} 1213 1214 1215static void wpa_driver_nl80211_event_rtm_newlink(void *ctx, 1216 struct ifinfomsg *ifi, 1217 u8 *buf, size_t len) 1218{ 1219 struct nl80211_global *global = ctx; 1220 struct wpa_driver_nl80211_data *drv; 1221 int attrlen; 1222 struct rtattr *attr; 1223 u32 brid = 0; 1224 char namebuf[IFNAMSIZ]; 1225 char ifname[IFNAMSIZ + 1]; 1226 char extra[100], *pos, *end; 1227 1228 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1229 if (!drv) { 1230 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_NEWLINK event for foreign ifindex %d", 1231 ifi->ifi_index); 1232 return; 1233 } 1234 1235 extra[0] = '\0'; 1236 pos = extra; 1237 end = pos + sizeof(extra); 1238 ifname[0] = '\0'; 1239 1240 attrlen = len; 1241 attr = (struct rtattr *) buf; 1242 while (RTA_OK(attr, attrlen)) { 1243 switch (attr->rta_type) { 1244 case IFLA_IFNAME: 1245 if (RTA_PAYLOAD(attr) >= IFNAMSIZ) 1246 break; 1247 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr)); 1248 ifname[RTA_PAYLOAD(attr)] = '\0'; 1249 break; 1250 case IFLA_MASTER: 1251 brid = nla_get_u32((struct nlattr *) attr); 1252 pos += os_snprintf(pos, end - pos, " master=%u", brid); 1253 break; 1254 case IFLA_WIRELESS: 1255 pos += os_snprintf(pos, end - pos, " wext"); 1256 break; 1257 case IFLA_OPERSTATE: 1258 pos += os_snprintf(pos, end - pos, " operstate=%u", 1259 nla_get_u32((struct nlattr *) attr)); 1260 break; 1261 case IFLA_LINKMODE: 1262 pos += os_snprintf(pos, end - pos, " linkmode=%u", 1263 nla_get_u32((struct nlattr *) attr)); 1264 break; 1265 } 1266 attr = RTA_NEXT(attr, attrlen); 1267 } 1268 extra[sizeof(extra) - 1] = '\0'; 1269 1270 wpa_printf(MSG_DEBUG, "RTM_NEWLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)", 1271 ifi->ifi_index, ifname, extra, ifi->ifi_family, 1272 ifi->ifi_flags, 1273 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 1274 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 1275 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 1276 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 1277 1278 if (!drv->if_disabled && !(ifi->ifi_flags & IFF_UP)) { 1279 if (if_indextoname(ifi->ifi_index, namebuf) && 1280 linux_iface_up(drv->global->ioctl_sock, 1281 drv->first_bss->ifname) > 0) { 1282 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1283 "event since interface %s is up", namebuf); 1284 return; 1285 } 1286 wpa_printf(MSG_DEBUG, "nl80211: Interface down"); 1287 if (drv->ignore_if_down_event) { 1288 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface down " 1289 "event generated by mode change"); 1290 drv->ignore_if_down_event = 0; 1291 } else { 1292 drv->if_disabled = 1; 1293 wpa_supplicant_event(drv->ctx, 1294 EVENT_INTERFACE_DISABLED, NULL); 1295 1296 /* 1297 * Try to get drv again, since it may be removed as 1298 * part of the EVENT_INTERFACE_DISABLED handling for 1299 * dynamic interfaces 1300 */ 1301 drv = nl80211_find_drv(global, ifi->ifi_index, 1302 buf, len); 1303 if (!drv) 1304 return; 1305 } 1306 } 1307 1308 if (drv->if_disabled && (ifi->ifi_flags & IFF_UP)) { 1309 if (if_indextoname(ifi->ifi_index, namebuf) && 1310 linux_iface_up(drv->global->ioctl_sock, 1311 drv->first_bss->ifname) == 0) { 1312 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1313 "event since interface %s is down", 1314 namebuf); 1315 } else if (if_nametoindex(drv->first_bss->ifname) == 0) { 1316 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1317 "event since interface %s does not exist", 1318 drv->first_bss->ifname); 1319 } else if (drv->if_removed) { 1320 wpa_printf(MSG_DEBUG, "nl80211: Ignore interface up " 1321 "event since interface %s is marked " 1322 "removed", drv->first_bss->ifname); 1323 } else { 1324 struct i802_bss *bss; 1325 u8 addr[ETH_ALEN]; 1326 1327 /* Re-read MAC address as it may have changed */ 1328 bss = get_bss_ifindex(drv, ifi->ifi_index); 1329 if (bss && 1330 linux_get_ifhwaddr(drv->global->ioctl_sock, 1331 bss->ifname, addr) < 0) { 1332 wpa_printf(MSG_DEBUG, 1333 "nl80211: %s: failed to re-read MAC address", 1334 bss->ifname); 1335 } else if (bss && 1336 os_memcmp(addr, bss->addr, ETH_ALEN) != 0) { 1337 wpa_printf(MSG_DEBUG, 1338 "nl80211: Own MAC address on ifindex %d (%s) changed from " 1339 MACSTR " to " MACSTR, 1340 ifi->ifi_index, bss->ifname, 1341 MAC2STR(bss->addr), 1342 MAC2STR(addr)); 1343 os_memcpy(bss->addr, addr, ETH_ALEN); 1344 } 1345 1346 wpa_printf(MSG_DEBUG, "nl80211: Interface up"); 1347 drv->if_disabled = 0; 1348 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_ENABLED, 1349 NULL); 1350 } 1351 } 1352 1353 /* 1354 * Some drivers send the association event before the operup event--in 1355 * this case, lifting operstate in wpa_driver_nl80211_set_operstate() 1356 * fails. This will hit us when wpa_supplicant does not need to do 1357 * IEEE 802.1X authentication 1358 */ 1359 if (drv->operstate == 1 && 1360 (ifi->ifi_flags & (IFF_LOWER_UP | IFF_DORMANT)) == IFF_LOWER_UP && 1361 !(ifi->ifi_flags & IFF_RUNNING)) { 1362 wpa_printf(MSG_DEBUG, "nl80211: Set IF_OPER_UP again based on ifi_flags and expected operstate"); 1363 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 1364 -1, IF_OPER_UP); 1365 } 1366 1367 if (ifname[0]) 1368 wpa_driver_nl80211_event_newlink(drv, ifname); 1369 1370 if (ifi->ifi_family == AF_BRIDGE && brid) { 1371 /* device has been added to bridge */ 1372 if_indextoname(brid, namebuf); 1373 wpa_printf(MSG_DEBUG, "nl80211: Add ifindex %u for bridge %s", 1374 brid, namebuf); 1375 add_ifidx(drv, brid); 1376 } 1377} 1378 1379 1380static void wpa_driver_nl80211_event_rtm_dellink(void *ctx, 1381 struct ifinfomsg *ifi, 1382 u8 *buf, size_t len) 1383{ 1384 struct nl80211_global *global = ctx; 1385 struct wpa_driver_nl80211_data *drv; 1386 int attrlen; 1387 struct rtattr *attr; 1388 u32 brid = 0; 1389 char ifname[IFNAMSIZ + 1]; 1390 char extra[100], *pos, *end; 1391 1392 drv = nl80211_find_drv(global, ifi->ifi_index, buf, len); 1393 if (!drv) { 1394 wpa_printf(MSG_DEBUG, "nl80211: Ignore RTM_DELLINK event for foreign ifindex %d", 1395 ifi->ifi_index); 1396 return; 1397 } 1398 1399 extra[0] = '\0'; 1400 pos = extra; 1401 end = pos + sizeof(extra); 1402 ifname[0] = '\0'; 1403 1404 attrlen = len; 1405 attr = (struct rtattr *) buf; 1406 while (RTA_OK(attr, attrlen)) { 1407 switch (attr->rta_type) { 1408 case IFLA_IFNAME: 1409 if (RTA_PAYLOAD(attr) >= IFNAMSIZ) 1410 break; 1411 os_memcpy(ifname, RTA_DATA(attr), RTA_PAYLOAD(attr)); 1412 ifname[RTA_PAYLOAD(attr)] = '\0'; 1413 break; 1414 case IFLA_MASTER: 1415 brid = nla_get_u32((struct nlattr *) attr); 1416 pos += os_snprintf(pos, end - pos, " master=%u", brid); 1417 break; 1418 case IFLA_OPERSTATE: 1419 pos += os_snprintf(pos, end - pos, " operstate=%u", 1420 nla_get_u32((struct nlattr *) attr)); 1421 break; 1422 case IFLA_LINKMODE: 1423 pos += os_snprintf(pos, end - pos, " linkmode=%u", 1424 nla_get_u32((struct nlattr *) attr)); 1425 break; 1426 } 1427 attr = RTA_NEXT(attr, attrlen); 1428 } 1429 extra[sizeof(extra) - 1] = '\0'; 1430 1431 wpa_printf(MSG_DEBUG, "RTM_DELLINK: ifi_index=%d ifname=%s%s ifi_family=%d ifi_flags=0x%x (%s%s%s%s)", 1432 ifi->ifi_index, ifname, extra, ifi->ifi_family, 1433 ifi->ifi_flags, 1434 (ifi->ifi_flags & IFF_UP) ? "[UP]" : "", 1435 (ifi->ifi_flags & IFF_RUNNING) ? "[RUNNING]" : "", 1436 (ifi->ifi_flags & IFF_LOWER_UP) ? "[LOWER_UP]" : "", 1437 (ifi->ifi_flags & IFF_DORMANT) ? "[DORMANT]" : ""); 1438 1439 if (ifname[0] && (ifi->ifi_family != AF_BRIDGE || !brid)) 1440 wpa_driver_nl80211_event_dellink(drv, ifname); 1441 1442 if (ifi->ifi_family == AF_BRIDGE && brid) { 1443 /* device has been removed from bridge */ 1444 char namebuf[IFNAMSIZ]; 1445 if_indextoname(brid, namebuf); 1446 wpa_printf(MSG_DEBUG, "nl80211: Remove ifindex %u for bridge " 1447 "%s", brid, namebuf); 1448 del_ifidx(drv, brid); 1449 } 1450} 1451 1452 1453static void mlme_event_auth(struct wpa_driver_nl80211_data *drv, 1454 const u8 *frame, size_t len) 1455{ 1456 const struct ieee80211_mgmt *mgmt; 1457 union wpa_event_data event; 1458 1459 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME) && 1460 drv->force_connect_cmd) { 1461 /* 1462 * Avoid reporting two association events that would confuse 1463 * the core code. 1464 */ 1465 wpa_printf(MSG_DEBUG, 1466 "nl80211: Ignore auth event when using driver SME"); 1467 return; 1468 } 1469 1470 wpa_printf(MSG_DEBUG, "nl80211: Authenticate event"); 1471 mgmt = (const struct ieee80211_mgmt *) frame; 1472 if (len < 24 + sizeof(mgmt->u.auth)) { 1473 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1474 "frame"); 1475 return; 1476 } 1477 1478 os_memcpy(drv->auth_bssid, mgmt->sa, ETH_ALEN); 1479 os_memset(drv->auth_attempt_bssid, 0, ETH_ALEN); 1480 os_memset(&event, 0, sizeof(event)); 1481 os_memcpy(event.auth.peer, mgmt->sa, ETH_ALEN); 1482 event.auth.auth_type = le_to_host16(mgmt->u.auth.auth_alg); 1483 event.auth.auth_transaction = 1484 le_to_host16(mgmt->u.auth.auth_transaction); 1485 event.auth.status_code = le_to_host16(mgmt->u.auth.status_code); 1486 if (len > 24 + sizeof(mgmt->u.auth)) { 1487 event.auth.ies = mgmt->u.auth.variable; 1488 event.auth.ies_len = len - 24 - sizeof(mgmt->u.auth); 1489 } 1490 1491 wpa_supplicant_event(drv->ctx, EVENT_AUTH, &event); 1492} 1493 1494 1495static unsigned int nl80211_get_assoc_freq(struct wpa_driver_nl80211_data *drv) 1496{ 1497 struct nl_msg *msg; 1498 int ret; 1499 struct nl80211_bss_info_arg arg; 1500 1501 os_memset(&arg, 0, sizeof(arg)); 1502 msg = nlmsg_alloc(); 1503 if (!msg) 1504 goto nla_put_failure; 1505 1506 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SCAN); 1507 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 1508 1509 arg.drv = drv; 1510 ret = send_and_recv_msgs(drv, msg, bss_info_handler, &arg); 1511 msg = NULL; 1512 if (ret == 0) { 1513 unsigned int freq = drv->nlmode == NL80211_IFTYPE_ADHOC ? 1514 arg.ibss_freq : arg.assoc_freq; 1515 wpa_printf(MSG_DEBUG, "nl80211: Operating frequency for the " 1516 "associated BSS from scan results: %u MHz", freq); 1517 if (freq) 1518 drv->assoc_freq = freq; 1519 return drv->assoc_freq; 1520 } 1521 wpa_printf(MSG_DEBUG, "nl80211: Scan result fetch failed: ret=%d " 1522 "(%s)", ret, strerror(-ret)); 1523nla_put_failure: 1524 nlmsg_free(msg); 1525 return drv->assoc_freq; 1526} 1527 1528 1529static void mlme_event_assoc(struct wpa_driver_nl80211_data *drv, 1530 const u8 *frame, size_t len) 1531{ 1532 const struct ieee80211_mgmt *mgmt; 1533 union wpa_event_data event; 1534 u16 status; 1535 1536 if (!(drv->capa.flags & WPA_DRIVER_FLAGS_SME) && 1537 drv->force_connect_cmd) { 1538 /* 1539 * Avoid reporting two association events that would confuse 1540 * the core code. 1541 */ 1542 wpa_printf(MSG_DEBUG, 1543 "nl80211: Ignore assoc event when using driver SME"); 1544 return; 1545 } 1546 1547 wpa_printf(MSG_DEBUG, "nl80211: Associate event"); 1548 mgmt = (const struct ieee80211_mgmt *) frame; 1549 if (len < 24 + sizeof(mgmt->u.assoc_resp)) { 1550 wpa_printf(MSG_DEBUG, "nl80211: Too short association event " 1551 "frame"); 1552 return; 1553 } 1554 1555 status = le_to_host16(mgmt->u.assoc_resp.status_code); 1556 if (status != WLAN_STATUS_SUCCESS) { 1557 os_memset(&event, 0, sizeof(event)); 1558 event.assoc_reject.bssid = mgmt->bssid; 1559 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1560 event.assoc_reject.resp_ies = 1561 (u8 *) mgmt->u.assoc_resp.variable; 1562 event.assoc_reject.resp_ies_len = 1563 len - 24 - sizeof(mgmt->u.assoc_resp); 1564 } 1565 event.assoc_reject.status_code = status; 1566 1567 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1568 return; 1569 } 1570 1571 drv->associated = 1; 1572 os_memcpy(drv->bssid, mgmt->sa, ETH_ALEN); 1573 os_memcpy(drv->prev_bssid, mgmt->sa, ETH_ALEN); 1574 1575 os_memset(&event, 0, sizeof(event)); 1576 if (len > 24 + sizeof(mgmt->u.assoc_resp)) { 1577 event.assoc_info.resp_ies = (u8 *) mgmt->u.assoc_resp.variable; 1578 event.assoc_info.resp_ies_len = 1579 len - 24 - sizeof(mgmt->u.assoc_resp); 1580 } 1581 1582 event.assoc_info.freq = drv->assoc_freq; 1583 1584 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1585} 1586 1587 1588static void mlme_event_connect(struct wpa_driver_nl80211_data *drv, 1589 enum nl80211_commands cmd, struct nlattr *status, 1590 struct nlattr *addr, struct nlattr *req_ie, 1591 struct nlattr *resp_ie) 1592{ 1593 union wpa_event_data event; 1594 u16 status_code; 1595 1596 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1597 /* 1598 * Avoid reporting two association events that would confuse 1599 * the core code. 1600 */ 1601 wpa_printf(MSG_DEBUG, "nl80211: Ignore connect event (cmd=%d) " 1602 "when using userspace SME", cmd); 1603 return; 1604 } 1605 1606 status_code = status ? nla_get_u16(status) : WLAN_STATUS_SUCCESS; 1607 1608 if (cmd == NL80211_CMD_CONNECT) { 1609 wpa_printf(MSG_DEBUG, 1610 "nl80211: Connect event (status=%u ignore_next_local_disconnect=%d)", 1611 status_code, drv->ignore_next_local_disconnect); 1612 } else if (cmd == NL80211_CMD_ROAM) { 1613 wpa_printf(MSG_DEBUG, "nl80211: Roam event"); 1614 } 1615 1616 os_memset(&event, 0, sizeof(event)); 1617 if (cmd == NL80211_CMD_CONNECT && status_code != WLAN_STATUS_SUCCESS) { 1618 if (addr) 1619 event.assoc_reject.bssid = nla_data(addr); 1620 if (drv->ignore_next_local_disconnect) { 1621 drv->ignore_next_local_disconnect = 0; 1622 if (!event.assoc_reject.bssid || 1623 (os_memcmp(event.assoc_reject.bssid, 1624 drv->auth_attempt_bssid, 1625 ETH_ALEN) != 0)) { 1626 /* 1627 * Ignore the event that came without a BSSID or 1628 * for the old connection since this is likely 1629 * not relevant to the new Connect command. 1630 */ 1631 wpa_printf(MSG_DEBUG, 1632 "nl80211: Ignore connection failure event triggered during reassociation"); 1633 return; 1634 } 1635 } 1636 if (resp_ie) { 1637 event.assoc_reject.resp_ies = nla_data(resp_ie); 1638 event.assoc_reject.resp_ies_len = nla_len(resp_ie); 1639 } 1640 event.assoc_reject.status_code = status_code; 1641 wpa_supplicant_event(drv->ctx, EVENT_ASSOC_REJECT, &event); 1642 return; 1643 } 1644 1645 drv->associated = 1; 1646 if (addr) { 1647 os_memcpy(drv->bssid, nla_data(addr), ETH_ALEN); 1648 os_memcpy(drv->prev_bssid, drv->bssid, ETH_ALEN); 1649 } 1650 1651 if (req_ie) { 1652 event.assoc_info.req_ies = nla_data(req_ie); 1653 event.assoc_info.req_ies_len = nla_len(req_ie); 1654 } 1655 if (resp_ie) { 1656 event.assoc_info.resp_ies = nla_data(resp_ie); 1657 event.assoc_info.resp_ies_len = nla_len(resp_ie); 1658 } 1659 1660 event.assoc_info.freq = nl80211_get_assoc_freq(drv); 1661 1662 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, &event); 1663} 1664 1665 1666static void mlme_event_disconnect(struct wpa_driver_nl80211_data *drv, 1667 struct nlattr *reason, struct nlattr *addr, 1668 struct nlattr *by_ap) 1669{ 1670 union wpa_event_data data; 1671 unsigned int locally_generated = by_ap == NULL; 1672 1673 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 1674 /* 1675 * Avoid reporting two disassociation events that could 1676 * confuse the core code. 1677 */ 1678 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1679 "event when using userspace SME"); 1680 return; 1681 } 1682 1683 if (drv->ignore_next_local_disconnect) { 1684 drv->ignore_next_local_disconnect = 0; 1685 if (locally_generated) { 1686 wpa_printf(MSG_DEBUG, "nl80211: Ignore disconnect " 1687 "event triggered during reassociation"); 1688 return; 1689 } 1690 wpa_printf(MSG_WARNING, "nl80211: Was expecting local " 1691 "disconnect but got another disconnect " 1692 "event first"); 1693 } 1694 1695 wpa_printf(MSG_DEBUG, "nl80211: Disconnect event"); 1696 nl80211_mark_disconnected(drv); 1697 os_memset(&data, 0, sizeof(data)); 1698 if (reason) 1699 data.deauth_info.reason_code = nla_get_u16(reason); 1700 data.deauth_info.locally_generated = by_ap == NULL; 1701 wpa_supplicant_event(drv->ctx, EVENT_DEAUTH, &data); 1702} 1703 1704 1705static int calculate_chan_offset(int width, int freq, int cf1, int cf2) 1706{ 1707 int freq1 = 0; 1708 1709 switch (convert2width(width)) { 1710 case CHAN_WIDTH_20_NOHT: 1711 case CHAN_WIDTH_20: 1712 return 0; 1713 case CHAN_WIDTH_40: 1714 freq1 = cf1 - 10; 1715 break; 1716 case CHAN_WIDTH_80: 1717 freq1 = cf1 - 30; 1718 break; 1719 case CHAN_WIDTH_160: 1720 freq1 = cf1 - 70; 1721 break; 1722 case CHAN_WIDTH_UNKNOWN: 1723 case CHAN_WIDTH_80P80: 1724 /* FIXME: implement this */ 1725 return 0; 1726 } 1727 1728 return (abs(freq - freq1) / 20) % 2 == 0 ? 1 : -1; 1729} 1730 1731 1732static void mlme_event_ch_switch(struct wpa_driver_nl80211_data *drv, 1733 struct nlattr *ifindex, struct nlattr *freq, 1734 struct nlattr *type, struct nlattr *bw, 1735 struct nlattr *cf1, struct nlattr *cf2) 1736{ 1737 struct i802_bss *bss; 1738 union wpa_event_data data; 1739 int ht_enabled = 1; 1740 int chan_offset = 0; 1741 int ifidx; 1742 1743 wpa_printf(MSG_DEBUG, "nl80211: Channel switch event"); 1744 1745 if (!freq) 1746 return; 1747 1748 ifidx = nla_get_u32(ifindex); 1749 bss = get_bss_ifindex(drv, ifidx); 1750 if (bss == NULL) { 1751 wpa_printf(MSG_WARNING, "nl80211: Unknown ifindex (%d) for channel switch, ignoring", 1752 ifidx); 1753 return; 1754 } 1755 1756 if (type) { 1757 switch (nla_get_u32(type)) { 1758 case NL80211_CHAN_NO_HT: 1759 ht_enabled = 0; 1760 break; 1761 case NL80211_CHAN_HT20: 1762 break; 1763 case NL80211_CHAN_HT40PLUS: 1764 chan_offset = 1; 1765 break; 1766 case NL80211_CHAN_HT40MINUS: 1767 chan_offset = -1; 1768 break; 1769 } 1770 } else if (bw && cf1) { 1771 /* This can happen for example with VHT80 ch switch */ 1772 chan_offset = calculate_chan_offset(nla_get_u32(bw), 1773 nla_get_u32(freq), 1774 nla_get_u32(cf1), 1775 cf2 ? nla_get_u32(cf2) : 0); 1776 } else { 1777 wpa_printf(MSG_WARNING, "nl80211: Unknown secondary channel information - following channel definition calculations may fail"); 1778 } 1779 1780 os_memset(&data, 0, sizeof(data)); 1781 data.ch_switch.freq = nla_get_u32(freq); 1782 data.ch_switch.ht_enabled = ht_enabled; 1783 data.ch_switch.ch_offset = chan_offset; 1784 if (bw) 1785 data.ch_switch.ch_width = convert2width(nla_get_u32(bw)); 1786 if (cf1) 1787 data.ch_switch.cf1 = nla_get_u32(cf1); 1788 if (cf2) 1789 data.ch_switch.cf2 = nla_get_u32(cf2); 1790 1791 bss->freq = data.ch_switch.freq; 1792 1793 wpa_supplicant_event(bss->ctx, EVENT_CH_SWITCH, &data); 1794} 1795 1796 1797static void mlme_timeout_event(struct wpa_driver_nl80211_data *drv, 1798 enum nl80211_commands cmd, struct nlattr *addr) 1799{ 1800 union wpa_event_data event; 1801 enum wpa_event_type ev; 1802 1803 if (nla_len(addr) != ETH_ALEN) 1804 return; 1805 1806 wpa_printf(MSG_DEBUG, "nl80211: MLME event %d; timeout with " MACSTR, 1807 cmd, MAC2STR((u8 *) nla_data(addr))); 1808 1809 if (cmd == NL80211_CMD_AUTHENTICATE) 1810 ev = EVENT_AUTH_TIMED_OUT; 1811 else if (cmd == NL80211_CMD_ASSOCIATE) 1812 ev = EVENT_ASSOC_TIMED_OUT; 1813 else 1814 return; 1815 1816 os_memset(&event, 0, sizeof(event)); 1817 os_memcpy(event.timeout_event.addr, nla_data(addr), ETH_ALEN); 1818 wpa_supplicant_event(drv->ctx, ev, &event); 1819} 1820 1821 1822static void mlme_event_mgmt(struct i802_bss *bss, 1823 struct nlattr *freq, struct nlattr *sig, 1824 const u8 *frame, size_t len) 1825{ 1826 struct wpa_driver_nl80211_data *drv = bss->drv; 1827 const struct ieee80211_mgmt *mgmt; 1828 union wpa_event_data event; 1829 u16 fc, stype; 1830 int ssi_signal = 0; 1831 int rx_freq = 0; 1832 1833 wpa_printf(MSG_MSGDUMP, "nl80211: Frame event"); 1834 mgmt = (const struct ieee80211_mgmt *) frame; 1835 if (len < 24) { 1836 wpa_printf(MSG_DEBUG, "nl80211: Too short management frame"); 1837 return; 1838 } 1839 1840 fc = le_to_host16(mgmt->frame_control); 1841 stype = WLAN_FC_GET_STYPE(fc); 1842 1843 if (sig) 1844 ssi_signal = (s32) nla_get_u32(sig); 1845 1846 os_memset(&event, 0, sizeof(event)); 1847 if (freq) { 1848 event.rx_mgmt.freq = nla_get_u32(freq); 1849 rx_freq = drv->last_mgmt_freq = event.rx_mgmt.freq; 1850 } 1851 wpa_printf(MSG_DEBUG, 1852 "nl80211: RX frame sa=" MACSTR 1853 " freq=%d ssi_signal=%d stype=%u (%s) len=%u", 1854 MAC2STR(mgmt->sa), rx_freq, ssi_signal, stype, fc2str(fc), 1855 (unsigned int) len); 1856 event.rx_mgmt.frame = frame; 1857 event.rx_mgmt.frame_len = len; 1858 event.rx_mgmt.ssi_signal = ssi_signal; 1859 event.rx_mgmt.drv_priv = bss; 1860 wpa_supplicant_event(drv->ctx, EVENT_RX_MGMT, &event); 1861} 1862 1863 1864static void mlme_event_mgmt_tx_status(struct wpa_driver_nl80211_data *drv, 1865 struct nlattr *cookie, const u8 *frame, 1866 size_t len, struct nlattr *ack) 1867{ 1868 union wpa_event_data event; 1869 const struct ieee80211_hdr *hdr; 1870 u16 fc; 1871 1872 wpa_printf(MSG_DEBUG, "nl80211: Frame TX status event"); 1873 if (!is_ap_interface(drv->nlmode)) { 1874 u64 cookie_val; 1875 1876 if (!cookie) 1877 return; 1878 1879 cookie_val = nla_get_u64(cookie); 1880 wpa_printf(MSG_DEBUG, "nl80211: Action TX status:" 1881 " cookie=0%llx%s (ack=%d)", 1882 (long long unsigned int) cookie_val, 1883 cookie_val == drv->send_action_cookie ? 1884 " (match)" : " (unknown)", ack != NULL); 1885 if (cookie_val != drv->send_action_cookie) 1886 return; 1887 } 1888 1889 hdr = (const struct ieee80211_hdr *) frame; 1890 fc = le_to_host16(hdr->frame_control); 1891 1892 os_memset(&event, 0, sizeof(event)); 1893 event.tx_status.type = WLAN_FC_GET_TYPE(fc); 1894 event.tx_status.stype = WLAN_FC_GET_STYPE(fc); 1895 event.tx_status.dst = hdr->addr1; 1896 event.tx_status.data = frame; 1897 event.tx_status.data_len = len; 1898 event.tx_status.ack = ack != NULL; 1899 wpa_supplicant_event(drv->ctx, EVENT_TX_STATUS, &event); 1900} 1901 1902 1903static void mlme_event_deauth_disassoc(struct wpa_driver_nl80211_data *drv, 1904 enum wpa_event_type type, 1905 const u8 *frame, size_t len) 1906{ 1907 const struct ieee80211_mgmt *mgmt; 1908 union wpa_event_data event; 1909 const u8 *bssid = NULL; 1910 u16 reason_code = 0; 1911 1912 if (type == EVENT_DEAUTH) 1913 wpa_printf(MSG_DEBUG, "nl80211: Deauthenticate event"); 1914 else 1915 wpa_printf(MSG_DEBUG, "nl80211: Disassociate event"); 1916 1917 mgmt = (const struct ieee80211_mgmt *) frame; 1918 if (len >= 24) { 1919 bssid = mgmt->bssid; 1920 1921 if ((drv->capa.flags & WPA_DRIVER_FLAGS_SME) && 1922 !drv->associated && 1923 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0 && 1924 os_memcmp(bssid, drv->auth_attempt_bssid, ETH_ALEN) != 0 && 1925 os_memcmp(bssid, drv->prev_bssid, ETH_ALEN) == 0) { 1926 /* 1927 * Avoid issues with some roaming cases where 1928 * disconnection event for the old AP may show up after 1929 * we have started connection with the new AP. 1930 */ 1931 wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth/disassoc event from old AP " MACSTR " when already authenticating with " MACSTR, 1932 MAC2STR(bssid), 1933 MAC2STR(drv->auth_attempt_bssid)); 1934 return; 1935 } 1936 1937 if (drv->associated != 0 && 1938 os_memcmp(bssid, drv->bssid, ETH_ALEN) != 0 && 1939 os_memcmp(bssid, drv->auth_bssid, ETH_ALEN) != 0) { 1940 /* 1941 * We have presumably received this deauth as a 1942 * response to a clear_state_mismatch() outgoing 1943 * deauth. Don't let it take us offline! 1944 */ 1945 wpa_printf(MSG_DEBUG, "nl80211: Deauth received " 1946 "from Unknown BSSID " MACSTR " -- ignoring", 1947 MAC2STR(bssid)); 1948 return; 1949 } 1950 } 1951 1952 nl80211_mark_disconnected(drv); 1953 os_memset(&event, 0, sizeof(event)); 1954 1955 /* Note: Same offset for Reason Code in both frame subtypes */ 1956 if (len >= 24 + sizeof(mgmt->u.deauth)) 1957 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 1958 1959 if (type == EVENT_DISASSOC) { 1960 event.disassoc_info.locally_generated = 1961 !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN); 1962 event.disassoc_info.addr = bssid; 1963 event.disassoc_info.reason_code = reason_code; 1964 if (frame + len > mgmt->u.disassoc.variable) { 1965 event.disassoc_info.ie = mgmt->u.disassoc.variable; 1966 event.disassoc_info.ie_len = frame + len - 1967 mgmt->u.disassoc.variable; 1968 } 1969 } else { 1970 if (drv->ignore_deauth_event) { 1971 wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth event due to previous forced deauth-during-auth"); 1972 drv->ignore_deauth_event = 0; 1973 return; 1974 } 1975 event.deauth_info.locally_generated = 1976 !os_memcmp(mgmt->sa, drv->first_bss->addr, ETH_ALEN); 1977 if (drv->ignore_next_local_deauth) { 1978 drv->ignore_next_local_deauth = 0; 1979 if (event.deauth_info.locally_generated) { 1980 wpa_printf(MSG_DEBUG, "nl80211: Ignore deauth event triggered due to own deauth request"); 1981 return; 1982 } 1983 wpa_printf(MSG_WARNING, "nl80211: Was expecting local deauth but got another disconnect event first"); 1984 } 1985 event.deauth_info.addr = bssid; 1986 event.deauth_info.reason_code = reason_code; 1987 if (frame + len > mgmt->u.deauth.variable) { 1988 event.deauth_info.ie = mgmt->u.deauth.variable; 1989 event.deauth_info.ie_len = frame + len - 1990 mgmt->u.deauth.variable; 1991 } 1992 } 1993 1994 wpa_supplicant_event(drv->ctx, type, &event); 1995} 1996 1997 1998static void mlme_event_unprot_disconnect(struct wpa_driver_nl80211_data *drv, 1999 enum wpa_event_type type, 2000 const u8 *frame, size_t len) 2001{ 2002 const struct ieee80211_mgmt *mgmt; 2003 union wpa_event_data event; 2004 u16 reason_code = 0; 2005 2006 if (type == EVENT_UNPROT_DEAUTH) 2007 wpa_printf(MSG_DEBUG, "nl80211: Unprot Deauthenticate event"); 2008 else 2009 wpa_printf(MSG_DEBUG, "nl80211: Unprot Disassociate event"); 2010 2011 if (len < 24) 2012 return; 2013 2014 mgmt = (const struct ieee80211_mgmt *) frame; 2015 2016 os_memset(&event, 0, sizeof(event)); 2017 /* Note: Same offset for Reason Code in both frame subtypes */ 2018 if (len >= 24 + sizeof(mgmt->u.deauth)) 2019 reason_code = le_to_host16(mgmt->u.deauth.reason_code); 2020 2021 if (type == EVENT_UNPROT_DISASSOC) { 2022 event.unprot_disassoc.sa = mgmt->sa; 2023 event.unprot_disassoc.da = mgmt->da; 2024 event.unprot_disassoc.reason_code = reason_code; 2025 } else { 2026 event.unprot_deauth.sa = mgmt->sa; 2027 event.unprot_deauth.da = mgmt->da; 2028 event.unprot_deauth.reason_code = reason_code; 2029 } 2030 2031 wpa_supplicant_event(drv->ctx, type, &event); 2032} 2033 2034 2035static void mlme_event(struct i802_bss *bss, 2036 enum nl80211_commands cmd, struct nlattr *frame, 2037 struct nlattr *addr, struct nlattr *timed_out, 2038 struct nlattr *freq, struct nlattr *ack, 2039 struct nlattr *cookie, struct nlattr *sig) 2040{ 2041 struct wpa_driver_nl80211_data *drv = bss->drv; 2042 const u8 *data; 2043 size_t len; 2044 2045 if (timed_out && addr) { 2046 mlme_timeout_event(drv, cmd, addr); 2047 return; 2048 } 2049 2050 if (frame == NULL) { 2051 wpa_printf(MSG_DEBUG, 2052 "nl80211: MLME event %d (%s) without frame data", 2053 cmd, nl80211_command_to_string(cmd)); 2054 return; 2055 } 2056 2057 data = nla_data(frame); 2058 len = nla_len(frame); 2059 if (len < 4 + 2 * ETH_ALEN) { 2060 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" 2061 MACSTR ") - too short", 2062 cmd, nl80211_command_to_string(cmd), bss->ifname, 2063 MAC2STR(bss->addr)); 2064 return; 2065 } 2066 wpa_printf(MSG_MSGDUMP, "nl80211: MLME event %d (%s) on %s(" MACSTR 2067 ") A1=" MACSTR " A2=" MACSTR, cmd, 2068 nl80211_command_to_string(cmd), bss->ifname, 2069 MAC2STR(bss->addr), MAC2STR(data + 4), 2070 MAC2STR(data + 4 + ETH_ALEN)); 2071 if (cmd != NL80211_CMD_FRAME_TX_STATUS && !(data[4] & 0x01) && 2072 os_memcmp(bss->addr, data + 4, ETH_ALEN) != 0 && 2073 os_memcmp(bss->addr, data + 4 + ETH_ALEN, ETH_ALEN) != 0) { 2074 wpa_printf(MSG_MSGDUMP, "nl80211: %s: Ignore MLME frame event " 2075 "for foreign address", bss->ifname); 2076 return; 2077 } 2078 wpa_hexdump(MSG_MSGDUMP, "nl80211: MLME event frame", 2079 nla_data(frame), nla_len(frame)); 2080 2081 switch (cmd) { 2082 case NL80211_CMD_AUTHENTICATE: 2083 mlme_event_auth(drv, nla_data(frame), nla_len(frame)); 2084 break; 2085 case NL80211_CMD_ASSOCIATE: 2086 mlme_event_assoc(drv, nla_data(frame), nla_len(frame)); 2087 break; 2088 case NL80211_CMD_DEAUTHENTICATE: 2089 mlme_event_deauth_disassoc(drv, EVENT_DEAUTH, 2090 nla_data(frame), nla_len(frame)); 2091 break; 2092 case NL80211_CMD_DISASSOCIATE: 2093 mlme_event_deauth_disassoc(drv, EVENT_DISASSOC, 2094 nla_data(frame), nla_len(frame)); 2095 break; 2096 case NL80211_CMD_FRAME: 2097 mlme_event_mgmt(bss, freq, sig, nla_data(frame), 2098 nla_len(frame)); 2099 break; 2100 case NL80211_CMD_FRAME_TX_STATUS: 2101 mlme_event_mgmt_tx_status(drv, cookie, nla_data(frame), 2102 nla_len(frame), ack); 2103 break; 2104 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 2105 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DEAUTH, 2106 nla_data(frame), nla_len(frame)); 2107 break; 2108 case NL80211_CMD_UNPROT_DISASSOCIATE: 2109 mlme_event_unprot_disconnect(drv, EVENT_UNPROT_DISASSOC, 2110 nla_data(frame), nla_len(frame)); 2111 break; 2112 default: 2113 break; 2114 } 2115} 2116 2117 2118static void mlme_event_michael_mic_failure(struct i802_bss *bss, 2119 struct nlattr *tb[]) 2120{ 2121 union wpa_event_data data; 2122 2123 wpa_printf(MSG_DEBUG, "nl80211: MLME event Michael MIC failure"); 2124 os_memset(&data, 0, sizeof(data)); 2125 if (tb[NL80211_ATTR_MAC]) { 2126 wpa_hexdump(MSG_DEBUG, "nl80211: Source MAC address", 2127 nla_data(tb[NL80211_ATTR_MAC]), 2128 nla_len(tb[NL80211_ATTR_MAC])); 2129 data.michael_mic_failure.src = nla_data(tb[NL80211_ATTR_MAC]); 2130 } 2131 if (tb[NL80211_ATTR_KEY_SEQ]) { 2132 wpa_hexdump(MSG_DEBUG, "nl80211: TSC", 2133 nla_data(tb[NL80211_ATTR_KEY_SEQ]), 2134 nla_len(tb[NL80211_ATTR_KEY_SEQ])); 2135 } 2136 if (tb[NL80211_ATTR_KEY_TYPE]) { 2137 enum nl80211_key_type key_type = 2138 nla_get_u32(tb[NL80211_ATTR_KEY_TYPE]); 2139 wpa_printf(MSG_DEBUG, "nl80211: Key Type %d", key_type); 2140 if (key_type == NL80211_KEYTYPE_PAIRWISE) 2141 data.michael_mic_failure.unicast = 1; 2142 } else 2143 data.michael_mic_failure.unicast = 1; 2144 2145 if (tb[NL80211_ATTR_KEY_IDX]) { 2146 u8 key_id = nla_get_u8(tb[NL80211_ATTR_KEY_IDX]); 2147 wpa_printf(MSG_DEBUG, "nl80211: Key Id %d", key_id); 2148 } 2149 2150 wpa_supplicant_event(bss->ctx, EVENT_MICHAEL_MIC_FAILURE, &data); 2151} 2152 2153 2154static void mlme_event_join_ibss(struct wpa_driver_nl80211_data *drv, 2155 struct nlattr *tb[]) 2156{ 2157 unsigned int freq; 2158 2159 if (tb[NL80211_ATTR_MAC] == NULL) { 2160 wpa_printf(MSG_DEBUG, "nl80211: No address in IBSS joined " 2161 "event"); 2162 return; 2163 } 2164 os_memcpy(drv->bssid, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2165 2166 drv->associated = 1; 2167 wpa_printf(MSG_DEBUG, "nl80211: IBSS " MACSTR " joined", 2168 MAC2STR(drv->bssid)); 2169 2170 freq = nl80211_get_assoc_freq(drv); 2171 if (freq) { 2172 wpa_printf(MSG_DEBUG, "nl80211: IBSS on frequency %u MHz", 2173 freq); 2174 drv->first_bss->freq = freq; 2175 } 2176 2177 wpa_supplicant_event(drv->ctx, EVENT_ASSOC, NULL); 2178} 2179 2180 2181static void mlme_event_remain_on_channel(struct wpa_driver_nl80211_data *drv, 2182 int cancel_event, struct nlattr *tb[]) 2183{ 2184 unsigned int freq, chan_type, duration; 2185 union wpa_event_data data; 2186 u64 cookie; 2187 2188 if (tb[NL80211_ATTR_WIPHY_FREQ]) 2189 freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 2190 else 2191 freq = 0; 2192 2193 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) 2194 chan_type = nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]); 2195 else 2196 chan_type = 0; 2197 2198 if (tb[NL80211_ATTR_DURATION]) 2199 duration = nla_get_u32(tb[NL80211_ATTR_DURATION]); 2200 else 2201 duration = 0; 2202 2203 if (tb[NL80211_ATTR_COOKIE]) 2204 cookie = nla_get_u64(tb[NL80211_ATTR_COOKIE]); 2205 else 2206 cookie = 0; 2207 2208 wpa_printf(MSG_DEBUG, "nl80211: Remain-on-channel event (cancel=%d " 2209 "freq=%u channel_type=%u duration=%u cookie=0x%llx (%s))", 2210 cancel_event, freq, chan_type, duration, 2211 (long long unsigned int) cookie, 2212 cookie == drv->remain_on_chan_cookie ? "match" : "unknown"); 2213 2214 if (cookie != drv->remain_on_chan_cookie) 2215 return; /* not for us */ 2216 2217 if (cancel_event) 2218 drv->pending_remain_on_chan = 0; 2219 2220 os_memset(&data, 0, sizeof(data)); 2221 data.remain_on_channel.freq = freq; 2222 data.remain_on_channel.duration = duration; 2223 wpa_supplicant_event(drv->ctx, cancel_event ? 2224 EVENT_CANCEL_REMAIN_ON_CHANNEL : 2225 EVENT_REMAIN_ON_CHANNEL, &data); 2226} 2227 2228 2229static void mlme_event_ft_event(struct wpa_driver_nl80211_data *drv, 2230 struct nlattr *tb[]) 2231{ 2232 union wpa_event_data data; 2233 2234 os_memset(&data, 0, sizeof(data)); 2235 2236 if (tb[NL80211_ATTR_IE]) { 2237 data.ft_ies.ies = nla_data(tb[NL80211_ATTR_IE]); 2238 data.ft_ies.ies_len = nla_len(tb[NL80211_ATTR_IE]); 2239 } 2240 2241 if (tb[NL80211_ATTR_IE_RIC]) { 2242 data.ft_ies.ric_ies = nla_data(tb[NL80211_ATTR_IE_RIC]); 2243 data.ft_ies.ric_ies_len = nla_len(tb[NL80211_ATTR_IE_RIC]); 2244 } 2245 2246 if (tb[NL80211_ATTR_MAC]) 2247 os_memcpy(data.ft_ies.target_ap, 2248 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2249 2250 wpa_printf(MSG_DEBUG, "nl80211: FT event target_ap " MACSTR, 2251 MAC2STR(data.ft_ies.target_ap)); 2252 2253 wpa_supplicant_event(drv->ctx, EVENT_FT_RESPONSE, &data); 2254} 2255 2256 2257static void send_scan_event(struct wpa_driver_nl80211_data *drv, int aborted, 2258 struct nlattr *tb[]) 2259{ 2260 union wpa_event_data event; 2261 struct nlattr *nl; 2262 int rem; 2263 struct scan_info *info; 2264#define MAX_REPORT_FREQS 50 2265 int freqs[MAX_REPORT_FREQS]; 2266 int num_freqs = 0; 2267 2268 if (drv->scan_for_auth) { 2269 drv->scan_for_auth = 0; 2270 wpa_printf(MSG_DEBUG, "nl80211: Scan results for missing " 2271 "cfg80211 BSS entry"); 2272 wpa_driver_nl80211_authenticate_retry(drv); 2273 return; 2274 } 2275 2276 os_memset(&event, 0, sizeof(event)); 2277 info = &event.scan_info; 2278 info->aborted = aborted; 2279 2280 if (tb[NL80211_ATTR_SCAN_SSIDS]) { 2281 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_SSIDS], rem) { 2282 struct wpa_driver_scan_ssid *s = 2283 &info->ssids[info->num_ssids]; 2284 s->ssid = nla_data(nl); 2285 s->ssid_len = nla_len(nl); 2286 wpa_printf(MSG_DEBUG, "nl80211: Scan probed for SSID '%s'", 2287 wpa_ssid_txt(s->ssid, s->ssid_len)); 2288 info->num_ssids++; 2289 if (info->num_ssids == WPAS_MAX_SCAN_SSIDS) 2290 break; 2291 } 2292 } 2293 if (tb[NL80211_ATTR_SCAN_FREQUENCIES]) { 2294 char msg[200], *pos, *end; 2295 int res; 2296 2297 pos = msg; 2298 end = pos + sizeof(msg); 2299 *pos = '\0'; 2300 2301 nla_for_each_nested(nl, tb[NL80211_ATTR_SCAN_FREQUENCIES], rem) 2302 { 2303 freqs[num_freqs] = nla_get_u32(nl); 2304 res = os_snprintf(pos, end - pos, " %d", 2305 freqs[num_freqs]); 2306 if (res > 0 && end - pos > res) 2307 pos += res; 2308 num_freqs++; 2309 if (num_freqs == MAX_REPORT_FREQS - 1) 2310 break; 2311 } 2312 info->freqs = freqs; 2313 info->num_freqs = num_freqs; 2314 wpa_printf(MSG_DEBUG, "nl80211: Scan included frequencies:%s", 2315 msg); 2316 } 2317 wpa_supplicant_event(drv->ctx, EVENT_SCAN_RESULTS, &event); 2318} 2319 2320 2321static int get_link_signal(struct nl_msg *msg, void *arg) 2322{ 2323 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2324 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2325 struct nlattr *sinfo[NL80211_STA_INFO_MAX + 1]; 2326 static struct nla_policy policy[NL80211_STA_INFO_MAX + 1] = { 2327 [NL80211_STA_INFO_SIGNAL] = { .type = NLA_U8 }, 2328 [NL80211_STA_INFO_SIGNAL_AVG] = { .type = NLA_U8 }, 2329 }; 2330 struct nlattr *rinfo[NL80211_RATE_INFO_MAX + 1]; 2331 static struct nla_policy rate_policy[NL80211_RATE_INFO_MAX + 1] = { 2332 [NL80211_RATE_INFO_BITRATE] = { .type = NLA_U16 }, 2333 [NL80211_RATE_INFO_MCS] = { .type = NLA_U8 }, 2334 [NL80211_RATE_INFO_40_MHZ_WIDTH] = { .type = NLA_FLAG }, 2335 [NL80211_RATE_INFO_SHORT_GI] = { .type = NLA_FLAG }, 2336 }; 2337 struct wpa_signal_info *sig_change = arg; 2338 2339 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2340 genlmsg_attrlen(gnlh, 0), NULL); 2341 if (!tb[NL80211_ATTR_STA_INFO] || 2342 nla_parse_nested(sinfo, NL80211_STA_INFO_MAX, 2343 tb[NL80211_ATTR_STA_INFO], policy)) 2344 return NL_SKIP; 2345 if (!sinfo[NL80211_STA_INFO_SIGNAL]) 2346 return NL_SKIP; 2347 2348 sig_change->current_signal = 2349 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL]); 2350 2351 if (sinfo[NL80211_STA_INFO_SIGNAL_AVG]) 2352 sig_change->avg_signal = 2353 (s8) nla_get_u8(sinfo[NL80211_STA_INFO_SIGNAL_AVG]); 2354 else 2355 sig_change->avg_signal = 0; 2356 2357 if (sinfo[NL80211_STA_INFO_TX_BITRATE]) { 2358 if (nla_parse_nested(rinfo, NL80211_RATE_INFO_MAX, 2359 sinfo[NL80211_STA_INFO_TX_BITRATE], 2360 rate_policy)) { 2361 sig_change->current_txrate = 0; 2362 } else { 2363 if (rinfo[NL80211_RATE_INFO_BITRATE]) { 2364 sig_change->current_txrate = 2365 nla_get_u16(rinfo[ 2366 NL80211_RATE_INFO_BITRATE]) * 100; 2367 } 2368 } 2369 } 2370 2371 return NL_SKIP; 2372} 2373 2374 2375static int nl80211_get_link_signal(struct wpa_driver_nl80211_data *drv, 2376 struct wpa_signal_info *sig) 2377{ 2378 struct nl_msg *msg; 2379 2380 sig->current_signal = -9999; 2381 sig->current_txrate = 0; 2382 2383 msg = nlmsg_alloc(); 2384 if (!msg) 2385 return -ENOMEM; 2386 2387 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_STATION); 2388 2389 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2390 NLA_PUT(msg, NL80211_ATTR_MAC, ETH_ALEN, drv->bssid); 2391 2392 return send_and_recv_msgs(drv, msg, get_link_signal, sig); 2393 nla_put_failure: 2394 nlmsg_free(msg); 2395 return -ENOBUFS; 2396} 2397 2398 2399static int get_link_noise(struct nl_msg *msg, void *arg) 2400{ 2401 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2402 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2403 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 2404 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 2405 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 2406 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 2407 }; 2408 struct wpa_signal_info *sig_change = arg; 2409 2410 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2411 genlmsg_attrlen(gnlh, 0), NULL); 2412 2413 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 2414 wpa_printf(MSG_DEBUG, "nl80211: survey data missing!"); 2415 return NL_SKIP; 2416 } 2417 2418 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 2419 tb[NL80211_ATTR_SURVEY_INFO], 2420 survey_policy)) { 2421 wpa_printf(MSG_DEBUG, "nl80211: failed to parse nested " 2422 "attributes!"); 2423 return NL_SKIP; 2424 } 2425 2426 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 2427 return NL_SKIP; 2428 2429 if (nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 2430 sig_change->frequency) 2431 return NL_SKIP; 2432 2433 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 2434 return NL_SKIP; 2435 2436 sig_change->current_noise = 2437 (s8) nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 2438 2439 return NL_SKIP; 2440} 2441 2442 2443static int nl80211_get_link_noise(struct wpa_driver_nl80211_data *drv, 2444 struct wpa_signal_info *sig_change) 2445{ 2446 struct nl_msg *msg; 2447 2448 sig_change->current_noise = 9999; 2449 sig_change->frequency = drv->assoc_freq; 2450 2451 msg = nlmsg_alloc(); 2452 if (!msg) 2453 return -ENOMEM; 2454 2455 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 2456 2457 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2458 2459 return send_and_recv_msgs(drv, msg, get_link_noise, sig_change); 2460 nla_put_failure: 2461 nlmsg_free(msg); 2462 return -ENOBUFS; 2463} 2464 2465 2466static int get_noise_for_scan_results(struct nl_msg *msg, void *arg) 2467{ 2468 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 2469 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 2470 struct nlattr *sinfo[NL80211_SURVEY_INFO_MAX + 1]; 2471 static struct nla_policy survey_policy[NL80211_SURVEY_INFO_MAX + 1] = { 2472 [NL80211_SURVEY_INFO_FREQUENCY] = { .type = NLA_U32 }, 2473 [NL80211_SURVEY_INFO_NOISE] = { .type = NLA_U8 }, 2474 }; 2475 struct wpa_scan_results *scan_results = arg; 2476 struct wpa_scan_res *scan_res; 2477 size_t i; 2478 2479 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 2480 genlmsg_attrlen(gnlh, 0), NULL); 2481 2482 if (!tb[NL80211_ATTR_SURVEY_INFO]) { 2483 wpa_printf(MSG_DEBUG, "nl80211: Survey data missing"); 2484 return NL_SKIP; 2485 } 2486 2487 if (nla_parse_nested(sinfo, NL80211_SURVEY_INFO_MAX, 2488 tb[NL80211_ATTR_SURVEY_INFO], 2489 survey_policy)) { 2490 wpa_printf(MSG_DEBUG, "nl80211: Failed to parse nested " 2491 "attributes"); 2492 return NL_SKIP; 2493 } 2494 2495 if (!sinfo[NL80211_SURVEY_INFO_NOISE]) 2496 return NL_SKIP; 2497 2498 if (!sinfo[NL80211_SURVEY_INFO_FREQUENCY]) 2499 return NL_SKIP; 2500 2501 for (i = 0; i < scan_results->num; ++i) { 2502 scan_res = scan_results->res[i]; 2503 if (!scan_res) 2504 continue; 2505 if ((int) nla_get_u32(sinfo[NL80211_SURVEY_INFO_FREQUENCY]) != 2506 scan_res->freq) 2507 continue; 2508 if (!(scan_res->flags & WPA_SCAN_NOISE_INVALID)) 2509 continue; 2510 scan_res->noise = (s8) 2511 nla_get_u8(sinfo[NL80211_SURVEY_INFO_NOISE]); 2512 scan_res->flags &= ~WPA_SCAN_NOISE_INVALID; 2513 } 2514 2515 return NL_SKIP; 2516} 2517 2518 2519static int nl80211_get_noise_for_scan_results( 2520 struct wpa_driver_nl80211_data *drv, 2521 struct wpa_scan_results *scan_res) 2522{ 2523 struct nl_msg *msg; 2524 2525 msg = nlmsg_alloc(); 2526 if (!msg) 2527 return -ENOMEM; 2528 2529 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_SURVEY); 2530 2531 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 2532 2533 return send_and_recv_msgs(drv, msg, get_noise_for_scan_results, 2534 scan_res); 2535 nla_put_failure: 2536 nlmsg_free(msg); 2537 return -ENOBUFS; 2538} 2539 2540 2541static void nl80211_cqm_event(struct wpa_driver_nl80211_data *drv, 2542 struct nlattr *tb[]) 2543{ 2544 static struct nla_policy cqm_policy[NL80211_ATTR_CQM_MAX + 1] = { 2545 [NL80211_ATTR_CQM_RSSI_THOLD] = { .type = NLA_U32 }, 2546 [NL80211_ATTR_CQM_RSSI_HYST] = { .type = NLA_U8 }, 2547 [NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] = { .type = NLA_U32 }, 2548 [NL80211_ATTR_CQM_PKT_LOSS_EVENT] = { .type = NLA_U32 }, 2549 }; 2550 struct nlattr *cqm[NL80211_ATTR_CQM_MAX + 1]; 2551 enum nl80211_cqm_rssi_threshold_event event; 2552 union wpa_event_data ed; 2553 struct wpa_signal_info sig; 2554 int res; 2555 2556 if (tb[NL80211_ATTR_CQM] == NULL || 2557 nla_parse_nested(cqm, NL80211_ATTR_CQM_MAX, tb[NL80211_ATTR_CQM], 2558 cqm_policy)) { 2559 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid CQM event"); 2560 return; 2561 } 2562 2563 os_memset(&ed, 0, sizeof(ed)); 2564 2565 if (cqm[NL80211_ATTR_CQM_PKT_LOSS_EVENT]) { 2566 if (!tb[NL80211_ATTR_MAC]) 2567 return; 2568 os_memcpy(ed.low_ack.addr, nla_data(tb[NL80211_ATTR_MAC]), 2569 ETH_ALEN); 2570 wpa_supplicant_event(drv->ctx, EVENT_STATION_LOW_ACK, &ed); 2571 return; 2572 } 2573 2574 if (cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT] == NULL) 2575 return; 2576 event = nla_get_u32(cqm[NL80211_ATTR_CQM_RSSI_THRESHOLD_EVENT]); 2577 2578 if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_HIGH) { 2579 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2580 "event: RSSI high"); 2581 ed.signal_change.above_threshold = 1; 2582 } else if (event == NL80211_CQM_RSSI_THRESHOLD_EVENT_LOW) { 2583 wpa_printf(MSG_DEBUG, "nl80211: Connection quality monitor " 2584 "event: RSSI low"); 2585 ed.signal_change.above_threshold = 0; 2586 } else 2587 return; 2588 2589 res = nl80211_get_link_signal(drv, &sig); 2590 if (res == 0) { 2591 ed.signal_change.current_signal = sig.current_signal; 2592 ed.signal_change.current_txrate = sig.current_txrate; 2593 wpa_printf(MSG_DEBUG, "nl80211: Signal: %d dBm txrate: %d", 2594 sig.current_signal, sig.current_txrate); 2595 } 2596 2597 res = nl80211_get_link_noise(drv, &sig); 2598 if (res == 0) { 2599 ed.signal_change.current_noise = sig.current_noise; 2600 wpa_printf(MSG_DEBUG, "nl80211: Noise: %d dBm", 2601 sig.current_noise); 2602 } 2603 2604 wpa_supplicant_event(drv->ctx, EVENT_SIGNAL_CHANGE, &ed); 2605} 2606 2607 2608static void nl80211_new_station_event(struct wpa_driver_nl80211_data *drv, 2609 struct nlattr **tb) 2610{ 2611 u8 *addr; 2612 union wpa_event_data data; 2613 2614 if (tb[NL80211_ATTR_MAC] == NULL) 2615 return; 2616 addr = nla_data(tb[NL80211_ATTR_MAC]); 2617 wpa_printf(MSG_DEBUG, "nl80211: New station " MACSTR, MAC2STR(addr)); 2618 2619 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2620 u8 *ies = NULL; 2621 size_t ies_len = 0; 2622 if (tb[NL80211_ATTR_IE]) { 2623 ies = nla_data(tb[NL80211_ATTR_IE]); 2624 ies_len = nla_len(tb[NL80211_ATTR_IE]); 2625 } 2626 wpa_hexdump(MSG_DEBUG, "nl80211: Assoc Req IEs", ies, ies_len); 2627 drv_event_assoc(drv->ctx, addr, ies, ies_len, 0); 2628 return; 2629 } 2630 2631 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2632 return; 2633 2634 os_memset(&data, 0, sizeof(data)); 2635 os_memcpy(data.ibss_rsn_start.peer, addr, ETH_ALEN); 2636 wpa_supplicant_event(drv->ctx, EVENT_IBSS_RSN_START, &data); 2637} 2638 2639 2640static void nl80211_del_station_event(struct wpa_driver_nl80211_data *drv, 2641 struct nlattr **tb) 2642{ 2643 u8 *addr; 2644 union wpa_event_data data; 2645 2646 if (tb[NL80211_ATTR_MAC] == NULL) 2647 return; 2648 addr = nla_data(tb[NL80211_ATTR_MAC]); 2649 wpa_printf(MSG_DEBUG, "nl80211: Delete station " MACSTR, 2650 MAC2STR(addr)); 2651 2652 if (is_ap_interface(drv->nlmode) && drv->device_ap_sme) { 2653 drv_event_disassoc(drv->ctx, addr); 2654 return; 2655 } 2656 2657 if (drv->nlmode != NL80211_IFTYPE_ADHOC) 2658 return; 2659 2660 os_memset(&data, 0, sizeof(data)); 2661 os_memcpy(data.ibss_peer_lost.peer, addr, ETH_ALEN); 2662 wpa_supplicant_event(drv->ctx, EVENT_IBSS_PEER_LOST, &data); 2663} 2664 2665 2666static void nl80211_rekey_offload_event(struct wpa_driver_nl80211_data *drv, 2667 struct nlattr **tb) 2668{ 2669 struct nlattr *rekey_info[NUM_NL80211_REKEY_DATA]; 2670 static struct nla_policy rekey_policy[NUM_NL80211_REKEY_DATA] = { 2671 [NL80211_REKEY_DATA_KEK] = { 2672 .minlen = NL80211_KEK_LEN, 2673 .maxlen = NL80211_KEK_LEN, 2674 }, 2675 [NL80211_REKEY_DATA_KCK] = { 2676 .minlen = NL80211_KCK_LEN, 2677 .maxlen = NL80211_KCK_LEN, 2678 }, 2679 [NL80211_REKEY_DATA_REPLAY_CTR] = { 2680 .minlen = NL80211_REPLAY_CTR_LEN, 2681 .maxlen = NL80211_REPLAY_CTR_LEN, 2682 }, 2683 }; 2684 union wpa_event_data data; 2685 2686 if (!tb[NL80211_ATTR_MAC]) 2687 return; 2688 if (!tb[NL80211_ATTR_REKEY_DATA]) 2689 return; 2690 if (nla_parse_nested(rekey_info, MAX_NL80211_REKEY_DATA, 2691 tb[NL80211_ATTR_REKEY_DATA], rekey_policy)) 2692 return; 2693 if (!rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]) 2694 return; 2695 2696 os_memset(&data, 0, sizeof(data)); 2697 data.driver_gtk_rekey.bssid = nla_data(tb[NL80211_ATTR_MAC]); 2698 wpa_printf(MSG_DEBUG, "nl80211: Rekey offload event for BSSID " MACSTR, 2699 MAC2STR(data.driver_gtk_rekey.bssid)); 2700 data.driver_gtk_rekey.replay_ctr = 2701 nla_data(rekey_info[NL80211_REKEY_DATA_REPLAY_CTR]); 2702 wpa_hexdump(MSG_DEBUG, "nl80211: Rekey offload - Replay Counter", 2703 data.driver_gtk_rekey.replay_ctr, NL80211_REPLAY_CTR_LEN); 2704 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_GTK_REKEY, &data); 2705} 2706 2707 2708static void nl80211_pmksa_candidate_event(struct wpa_driver_nl80211_data *drv, 2709 struct nlattr **tb) 2710{ 2711 struct nlattr *cand[NUM_NL80211_PMKSA_CANDIDATE]; 2712 static struct nla_policy cand_policy[NUM_NL80211_PMKSA_CANDIDATE] = { 2713 [NL80211_PMKSA_CANDIDATE_INDEX] = { .type = NLA_U32 }, 2714 [NL80211_PMKSA_CANDIDATE_BSSID] = { 2715 .minlen = ETH_ALEN, 2716 .maxlen = ETH_ALEN, 2717 }, 2718 [NL80211_PMKSA_CANDIDATE_PREAUTH] = { .type = NLA_FLAG }, 2719 }; 2720 union wpa_event_data data; 2721 2722 wpa_printf(MSG_DEBUG, "nl80211: PMKSA candidate event"); 2723 2724 if (!tb[NL80211_ATTR_PMKSA_CANDIDATE]) 2725 return; 2726 if (nla_parse_nested(cand, MAX_NL80211_PMKSA_CANDIDATE, 2727 tb[NL80211_ATTR_PMKSA_CANDIDATE], cand_policy)) 2728 return; 2729 if (!cand[NL80211_PMKSA_CANDIDATE_INDEX] || 2730 !cand[NL80211_PMKSA_CANDIDATE_BSSID]) 2731 return; 2732 2733 os_memset(&data, 0, sizeof(data)); 2734 os_memcpy(data.pmkid_candidate.bssid, 2735 nla_data(cand[NL80211_PMKSA_CANDIDATE_BSSID]), ETH_ALEN); 2736 data.pmkid_candidate.index = 2737 nla_get_u32(cand[NL80211_PMKSA_CANDIDATE_INDEX]); 2738 data.pmkid_candidate.preauth = 2739 cand[NL80211_PMKSA_CANDIDATE_PREAUTH] != NULL; 2740 wpa_supplicant_event(drv->ctx, EVENT_PMKID_CANDIDATE, &data); 2741} 2742 2743 2744static void nl80211_client_probe_event(struct wpa_driver_nl80211_data *drv, 2745 struct nlattr **tb) 2746{ 2747 union wpa_event_data data; 2748 2749 wpa_printf(MSG_DEBUG, "nl80211: Probe client event"); 2750 2751 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_ACK]) 2752 return; 2753 2754 os_memset(&data, 0, sizeof(data)); 2755 os_memcpy(data.client_poll.addr, 2756 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2757 2758 wpa_supplicant_event(drv->ctx, EVENT_DRIVER_CLIENT_POLL_OK, &data); 2759} 2760 2761 2762static void nl80211_tdls_oper_event(struct wpa_driver_nl80211_data *drv, 2763 struct nlattr **tb) 2764{ 2765 union wpa_event_data data; 2766 2767 wpa_printf(MSG_DEBUG, "nl80211: TDLS operation event"); 2768 2769 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_TDLS_OPERATION]) 2770 return; 2771 2772 os_memset(&data, 0, sizeof(data)); 2773 os_memcpy(data.tdls.peer, nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2774 switch (nla_get_u8(tb[NL80211_ATTR_TDLS_OPERATION])) { 2775 case NL80211_TDLS_SETUP: 2776 wpa_printf(MSG_DEBUG, "nl80211: TDLS setup request for peer " 2777 MACSTR, MAC2STR(data.tdls.peer)); 2778 data.tdls.oper = TDLS_REQUEST_SETUP; 2779 break; 2780 case NL80211_TDLS_TEARDOWN: 2781 wpa_printf(MSG_DEBUG, "nl80211: TDLS teardown request for peer " 2782 MACSTR, MAC2STR(data.tdls.peer)); 2783 data.tdls.oper = TDLS_REQUEST_TEARDOWN; 2784 break; 2785 default: 2786 wpa_printf(MSG_DEBUG, "nl80211: Unsupported TDLS operatione " 2787 "event"); 2788 return; 2789 } 2790 if (tb[NL80211_ATTR_REASON_CODE]) { 2791 data.tdls.reason_code = 2792 nla_get_u16(tb[NL80211_ATTR_REASON_CODE]); 2793 } 2794 2795 wpa_supplicant_event(drv->ctx, EVENT_TDLS, &data); 2796} 2797 2798 2799static void nl80211_stop_ap(struct wpa_driver_nl80211_data *drv, 2800 struct nlattr **tb) 2801{ 2802 wpa_supplicant_event(drv->ctx, EVENT_INTERFACE_UNAVAILABLE, NULL); 2803} 2804 2805 2806static void nl80211_connect_failed_event(struct wpa_driver_nl80211_data *drv, 2807 struct nlattr **tb) 2808{ 2809 union wpa_event_data data; 2810 u32 reason; 2811 2812 wpa_printf(MSG_DEBUG, "nl80211: Connect failed event"); 2813 2814 if (!tb[NL80211_ATTR_MAC] || !tb[NL80211_ATTR_CONN_FAILED_REASON]) 2815 return; 2816 2817 os_memset(&data, 0, sizeof(data)); 2818 os_memcpy(data.connect_failed_reason.addr, 2819 nla_data(tb[NL80211_ATTR_MAC]), ETH_ALEN); 2820 2821 reason = nla_get_u32(tb[NL80211_ATTR_CONN_FAILED_REASON]); 2822 switch (reason) { 2823 case NL80211_CONN_FAIL_MAX_CLIENTS: 2824 wpa_printf(MSG_DEBUG, "nl80211: Max client reached"); 2825 data.connect_failed_reason.code = MAX_CLIENT_REACHED; 2826 break; 2827 case NL80211_CONN_FAIL_BLOCKED_CLIENT: 2828 wpa_printf(MSG_DEBUG, "nl80211: Blocked client " MACSTR 2829 " tried to connect", 2830 MAC2STR(data.connect_failed_reason.addr)); 2831 data.connect_failed_reason.code = BLOCKED_CLIENT; 2832 break; 2833 default: 2834 wpa_printf(MSG_DEBUG, "nl8021l: Unknown connect failed reason " 2835 "%u", reason); 2836 return; 2837 } 2838 2839 wpa_supplicant_event(drv->ctx, EVENT_CONNECT_FAILED_REASON, &data); 2840} 2841 2842 2843static void nl80211_radar_event(struct wpa_driver_nl80211_data *drv, 2844 struct nlattr **tb) 2845{ 2846 union wpa_event_data data; 2847 enum nl80211_radar_event event_type; 2848 2849 if (!tb[NL80211_ATTR_WIPHY_FREQ] || !tb[NL80211_ATTR_RADAR_EVENT]) 2850 return; 2851 2852 os_memset(&data, 0, sizeof(data)); 2853 data.dfs_event.freq = nla_get_u32(tb[NL80211_ATTR_WIPHY_FREQ]); 2854 event_type = nla_get_u32(tb[NL80211_ATTR_RADAR_EVENT]); 2855 2856 /* Check HT params */ 2857 if (tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE]) { 2858 data.dfs_event.ht_enabled = 1; 2859 data.dfs_event.chan_offset = 0; 2860 2861 switch (nla_get_u32(tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE])) { 2862 case NL80211_CHAN_NO_HT: 2863 data.dfs_event.ht_enabled = 0; 2864 break; 2865 case NL80211_CHAN_HT20: 2866 break; 2867 case NL80211_CHAN_HT40PLUS: 2868 data.dfs_event.chan_offset = 1; 2869 break; 2870 case NL80211_CHAN_HT40MINUS: 2871 data.dfs_event.chan_offset = -1; 2872 break; 2873 } 2874 } 2875 2876 /* Get VHT params */ 2877 if (tb[NL80211_ATTR_CHANNEL_WIDTH]) 2878 data.dfs_event.chan_width = 2879 convert2width(nla_get_u32( 2880 tb[NL80211_ATTR_CHANNEL_WIDTH])); 2881 if (tb[NL80211_ATTR_CENTER_FREQ1]) 2882 data.dfs_event.cf1 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ1]); 2883 if (tb[NL80211_ATTR_CENTER_FREQ2]) 2884 data.dfs_event.cf2 = nla_get_u32(tb[NL80211_ATTR_CENTER_FREQ2]); 2885 2886 wpa_printf(MSG_DEBUG, "nl80211: DFS event on freq %d MHz, ht: %d, offset: %d, width: %d, cf1: %dMHz, cf2: %dMHz", 2887 data.dfs_event.freq, data.dfs_event.ht_enabled, 2888 data.dfs_event.chan_offset, data.dfs_event.chan_width, 2889 data.dfs_event.cf1, data.dfs_event.cf2); 2890 2891 switch (event_type) { 2892 case NL80211_RADAR_DETECTED: 2893 wpa_supplicant_event(drv->ctx, EVENT_DFS_RADAR_DETECTED, &data); 2894 break; 2895 case NL80211_RADAR_CAC_FINISHED: 2896 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_FINISHED, &data); 2897 break; 2898 case NL80211_RADAR_CAC_ABORTED: 2899 wpa_supplicant_event(drv->ctx, EVENT_DFS_CAC_ABORTED, &data); 2900 break; 2901 case NL80211_RADAR_NOP_FINISHED: 2902 wpa_supplicant_event(drv->ctx, EVENT_DFS_NOP_FINISHED, &data); 2903 break; 2904 default: 2905 wpa_printf(MSG_DEBUG, "nl80211: Unknown radar event %d " 2906 "received", event_type); 2907 break; 2908 } 2909} 2910 2911 2912static void nl80211_spurious_frame(struct i802_bss *bss, struct nlattr **tb, 2913 int wds) 2914{ 2915 struct wpa_driver_nl80211_data *drv = bss->drv; 2916 union wpa_event_data event; 2917 2918 if (!tb[NL80211_ATTR_MAC]) 2919 return; 2920 2921 os_memset(&event, 0, sizeof(event)); 2922 event.rx_from_unknown.bssid = bss->addr; 2923 event.rx_from_unknown.addr = nla_data(tb[NL80211_ATTR_MAC]); 2924 event.rx_from_unknown.wds = wds; 2925 2926 wpa_supplicant_event(drv->ctx, EVENT_RX_FROM_UNKNOWN, &event); 2927} 2928 2929 2930static void qca_nl80211_avoid_freq(struct wpa_driver_nl80211_data *drv, 2931 const u8 *data, size_t len) 2932{ 2933 u32 i, count; 2934 union wpa_event_data event; 2935 struct wpa_freq_range *range = NULL; 2936 const struct qca_avoid_freq_list *freq_range; 2937 2938 freq_range = (const struct qca_avoid_freq_list *) data; 2939 if (len < sizeof(freq_range->count)) 2940 return; 2941 2942 count = freq_range->count; 2943 if (len < sizeof(freq_range->count) + 2944 count * sizeof(struct qca_avoid_freq_range)) { 2945 wpa_printf(MSG_DEBUG, "nl80211: Ignored too short avoid frequency list (len=%u)", 2946 (unsigned int) len); 2947 return; 2948 } 2949 2950 if (count > 0) { 2951 range = os_calloc(count, sizeof(struct wpa_freq_range)); 2952 if (range == NULL) 2953 return; 2954 } 2955 2956 os_memset(&event, 0, sizeof(event)); 2957 for (i = 0; i < count; i++) { 2958 unsigned int idx = event.freq_range.num; 2959 range[idx].min = freq_range->range[i].start_freq; 2960 range[idx].max = freq_range->range[i].end_freq; 2961 wpa_printf(MSG_DEBUG, "nl80211: Avoid frequency range: %u-%u", 2962 range[idx].min, range[idx].max); 2963 if (range[idx].min > range[idx].max) { 2964 wpa_printf(MSG_DEBUG, "nl80211: Ignore invalid frequency range"); 2965 continue; 2966 } 2967 event.freq_range.num++; 2968 } 2969 event.freq_range.range = range; 2970 2971 wpa_supplicant_event(drv->ctx, EVENT_AVOID_FREQUENCIES, &event); 2972 2973 os_free(range); 2974} 2975 2976 2977static void nl80211_vendor_event_qca(struct wpa_driver_nl80211_data *drv, 2978 u32 subcmd, u8 *data, size_t len) 2979{ 2980 switch (subcmd) { 2981 case QCA_NL80211_VENDOR_SUBCMD_AVOID_FREQUENCY: 2982 qca_nl80211_avoid_freq(drv, data, len); 2983 break; 2984 default: 2985 wpa_printf(MSG_DEBUG, 2986 "nl80211: Ignore unsupported QCA vendor event %u", 2987 subcmd); 2988 break; 2989 } 2990} 2991 2992 2993static void nl80211_vendor_event(struct wpa_driver_nl80211_data *drv, 2994 struct nlattr **tb) 2995{ 2996 u32 vendor_id, subcmd, wiphy = 0; 2997 int wiphy_idx; 2998 u8 *data = NULL; 2999 size_t len = 0; 3000 3001 if (!tb[NL80211_ATTR_VENDOR_ID] || 3002 !tb[NL80211_ATTR_VENDOR_SUBCMD]) 3003 return; 3004 3005 vendor_id = nla_get_u32(tb[NL80211_ATTR_VENDOR_ID]); 3006 subcmd = nla_get_u32(tb[NL80211_ATTR_VENDOR_SUBCMD]); 3007 3008 if (tb[NL80211_ATTR_WIPHY]) 3009 wiphy = nla_get_u32(tb[NL80211_ATTR_WIPHY]); 3010 3011 wpa_printf(MSG_DEBUG, "nl80211: Vendor event: wiphy=%u vendor_id=0x%x subcmd=%u", 3012 wiphy, vendor_id, subcmd); 3013 3014 if (tb[NL80211_ATTR_VENDOR_DATA]) { 3015 data = nla_data(tb[NL80211_ATTR_VENDOR_DATA]); 3016 len = nla_len(tb[NL80211_ATTR_VENDOR_DATA]); 3017 wpa_hexdump(MSG_MSGDUMP, "nl80211: Vendor data", data, len); 3018 } 3019 3020 wiphy_idx = nl80211_get_wiphy_index(drv->first_bss); 3021 if (wiphy_idx >= 0 && wiphy_idx != (int) wiphy) { 3022 wpa_printf(MSG_DEBUG, "nl80211: Ignore vendor event for foreign wiphy %u (own: %d)", 3023 wiphy, wiphy_idx); 3024 return; 3025 } 3026 3027 switch (vendor_id) { 3028 case OUI_QCA: 3029 nl80211_vendor_event_qca(drv, subcmd, data, len); 3030 break; 3031 default: 3032 wpa_printf(MSG_DEBUG, "nl80211: Ignore unsupported vendor event"); 3033 break; 3034 } 3035} 3036 3037 3038static void nl80211_reg_change_event(struct wpa_driver_nl80211_data *drv, 3039 struct nlattr *tb[]) 3040{ 3041 union wpa_event_data data; 3042 enum nl80211_reg_initiator init; 3043 3044 wpa_printf(MSG_DEBUG, "nl80211: Regulatory domain change"); 3045 3046 if (tb[NL80211_ATTR_REG_INITIATOR] == NULL) 3047 return; 3048 3049 os_memset(&data, 0, sizeof(data)); 3050 init = nla_get_u8(tb[NL80211_ATTR_REG_INITIATOR]); 3051 wpa_printf(MSG_DEBUG, " * initiator=%d", init); 3052 switch (init) { 3053 case NL80211_REGDOM_SET_BY_CORE: 3054 data.channel_list_changed.initiator = REGDOM_SET_BY_CORE; 3055 break; 3056 case NL80211_REGDOM_SET_BY_USER: 3057 data.channel_list_changed.initiator = REGDOM_SET_BY_USER; 3058 break; 3059 case NL80211_REGDOM_SET_BY_DRIVER: 3060 data.channel_list_changed.initiator = REGDOM_SET_BY_DRIVER; 3061 break; 3062 case NL80211_REGDOM_SET_BY_COUNTRY_IE: 3063 data.channel_list_changed.initiator = REGDOM_SET_BY_COUNTRY_IE; 3064 break; 3065 } 3066 3067 if (tb[NL80211_ATTR_REG_TYPE]) { 3068 enum nl80211_reg_type type; 3069 type = nla_get_u8(tb[NL80211_ATTR_REG_TYPE]); 3070 wpa_printf(MSG_DEBUG, " * type=%d", type); 3071 switch (type) { 3072 case NL80211_REGDOM_TYPE_COUNTRY: 3073 data.channel_list_changed.type = REGDOM_TYPE_COUNTRY; 3074 break; 3075 case NL80211_REGDOM_TYPE_WORLD: 3076 data.channel_list_changed.type = REGDOM_TYPE_WORLD; 3077 break; 3078 case NL80211_REGDOM_TYPE_CUSTOM_WORLD: 3079 data.channel_list_changed.type = 3080 REGDOM_TYPE_CUSTOM_WORLD; 3081 break; 3082 case NL80211_REGDOM_TYPE_INTERSECTION: 3083 data.channel_list_changed.type = 3084 REGDOM_TYPE_INTERSECTION; 3085 break; 3086 } 3087 } 3088 3089 if (tb[NL80211_ATTR_REG_ALPHA2]) { 3090 os_strlcpy(data.channel_list_changed.alpha2, 3091 nla_get_string(tb[NL80211_ATTR_REG_ALPHA2]), 3092 sizeof(data.channel_list_changed.alpha2)); 3093 wpa_printf(MSG_DEBUG, " * alpha2=%s", 3094 data.channel_list_changed.alpha2); 3095 } 3096 3097 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, &data); 3098} 3099 3100 3101static void do_process_drv_event(struct i802_bss *bss, int cmd, 3102 struct nlattr **tb) 3103{ 3104 struct wpa_driver_nl80211_data *drv = bss->drv; 3105 union wpa_event_data data; 3106 3107 wpa_printf(MSG_DEBUG, "nl80211: Drv Event %d (%s) received for %s", 3108 cmd, nl80211_command_to_string(cmd), bss->ifname); 3109 3110 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED && 3111 (cmd == NL80211_CMD_NEW_SCAN_RESULTS || 3112 cmd == NL80211_CMD_SCAN_ABORTED)) { 3113 wpa_driver_nl80211_set_mode(drv->first_bss, 3114 drv->ap_scan_as_station); 3115 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 3116 } 3117 3118 switch (cmd) { 3119 case NL80211_CMD_TRIGGER_SCAN: 3120 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan trigger"); 3121 drv->scan_state = SCAN_STARTED; 3122 if (drv->scan_for_auth) { 3123 /* 3124 * Cannot indicate EVENT_SCAN_STARTED here since we skip 3125 * EVENT_SCAN_RESULTS in scan_for_auth case and the 3126 * upper layer implementation could get confused about 3127 * scanning state. 3128 */ 3129 wpa_printf(MSG_DEBUG, "nl80211: Do not indicate scan-start event due to internal scan_for_auth"); 3130 break; 3131 } 3132 wpa_supplicant_event(drv->ctx, EVENT_SCAN_STARTED, NULL); 3133 break; 3134 case NL80211_CMD_START_SCHED_SCAN: 3135 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan started"); 3136 drv->scan_state = SCHED_SCAN_STARTED; 3137 break; 3138 case NL80211_CMD_SCHED_SCAN_STOPPED: 3139 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Sched scan stopped"); 3140 drv->scan_state = SCHED_SCAN_STOPPED; 3141 wpa_supplicant_event(drv->ctx, EVENT_SCHED_SCAN_STOPPED, NULL); 3142 break; 3143 case NL80211_CMD_NEW_SCAN_RESULTS: 3144 wpa_dbg(drv->ctx, MSG_DEBUG, 3145 "nl80211: New scan results available"); 3146 drv->scan_state = SCAN_COMPLETED; 3147 drv->scan_complete_events = 1; 3148 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 3149 drv->ctx); 3150 send_scan_event(drv, 0, tb); 3151 break; 3152 case NL80211_CMD_SCHED_SCAN_RESULTS: 3153 wpa_dbg(drv->ctx, MSG_DEBUG, 3154 "nl80211: New sched scan results available"); 3155 drv->scan_state = SCHED_SCAN_RESULTS; 3156 send_scan_event(drv, 0, tb); 3157 break; 3158 case NL80211_CMD_SCAN_ABORTED: 3159 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Scan aborted"); 3160 drv->scan_state = SCAN_ABORTED; 3161 /* 3162 * Need to indicate that scan results are available in order 3163 * not to make wpa_supplicant stop its scanning. 3164 */ 3165 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, 3166 drv->ctx); 3167 send_scan_event(drv, 1, tb); 3168 break; 3169 case NL80211_CMD_AUTHENTICATE: 3170 case NL80211_CMD_ASSOCIATE: 3171 case NL80211_CMD_DEAUTHENTICATE: 3172 case NL80211_CMD_DISASSOCIATE: 3173 case NL80211_CMD_FRAME_TX_STATUS: 3174 case NL80211_CMD_UNPROT_DEAUTHENTICATE: 3175 case NL80211_CMD_UNPROT_DISASSOCIATE: 3176 mlme_event(bss, cmd, tb[NL80211_ATTR_FRAME], 3177 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 3178 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 3179 tb[NL80211_ATTR_COOKIE], 3180 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 3181 break; 3182 case NL80211_CMD_CONNECT: 3183 case NL80211_CMD_ROAM: 3184 mlme_event_connect(drv, cmd, 3185 tb[NL80211_ATTR_STATUS_CODE], 3186 tb[NL80211_ATTR_MAC], 3187 tb[NL80211_ATTR_REQ_IE], 3188 tb[NL80211_ATTR_RESP_IE]); 3189 break; 3190 case NL80211_CMD_CH_SWITCH_NOTIFY: 3191 mlme_event_ch_switch(drv, 3192 tb[NL80211_ATTR_IFINDEX], 3193 tb[NL80211_ATTR_WIPHY_FREQ], 3194 tb[NL80211_ATTR_WIPHY_CHANNEL_TYPE], 3195 tb[NL80211_ATTR_CHANNEL_WIDTH], 3196 tb[NL80211_ATTR_CENTER_FREQ1], 3197 tb[NL80211_ATTR_CENTER_FREQ2]); 3198 break; 3199 case NL80211_CMD_DISCONNECT: 3200 mlme_event_disconnect(drv, tb[NL80211_ATTR_REASON_CODE], 3201 tb[NL80211_ATTR_MAC], 3202 tb[NL80211_ATTR_DISCONNECTED_BY_AP]); 3203 break; 3204 case NL80211_CMD_MICHAEL_MIC_FAILURE: 3205 mlme_event_michael_mic_failure(bss, tb); 3206 break; 3207 case NL80211_CMD_JOIN_IBSS: 3208 mlme_event_join_ibss(drv, tb); 3209 break; 3210 case NL80211_CMD_REMAIN_ON_CHANNEL: 3211 mlme_event_remain_on_channel(drv, 0, tb); 3212 break; 3213 case NL80211_CMD_CANCEL_REMAIN_ON_CHANNEL: 3214 mlme_event_remain_on_channel(drv, 1, tb); 3215 break; 3216 case NL80211_CMD_NOTIFY_CQM: 3217 nl80211_cqm_event(drv, tb); 3218 break; 3219 case NL80211_CMD_REG_CHANGE: 3220 nl80211_reg_change_event(drv, tb); 3221 break; 3222 case NL80211_CMD_REG_BEACON_HINT: 3223 wpa_printf(MSG_DEBUG, "nl80211: Regulatory beacon hint"); 3224 os_memset(&data, 0, sizeof(data)); 3225 data.channel_list_changed.initiator = REGDOM_BEACON_HINT; 3226 wpa_supplicant_event(drv->ctx, EVENT_CHANNEL_LIST_CHANGED, 3227 &data); 3228 break; 3229 case NL80211_CMD_NEW_STATION: 3230 nl80211_new_station_event(drv, tb); 3231 break; 3232 case NL80211_CMD_DEL_STATION: 3233 nl80211_del_station_event(drv, tb); 3234 break; 3235 case NL80211_CMD_SET_REKEY_OFFLOAD: 3236 nl80211_rekey_offload_event(drv, tb); 3237 break; 3238 case NL80211_CMD_PMKSA_CANDIDATE: 3239 nl80211_pmksa_candidate_event(drv, tb); 3240 break; 3241 case NL80211_CMD_PROBE_CLIENT: 3242 nl80211_client_probe_event(drv, tb); 3243 break; 3244 case NL80211_CMD_TDLS_OPER: 3245 nl80211_tdls_oper_event(drv, tb); 3246 break; 3247 case NL80211_CMD_CONN_FAILED: 3248 nl80211_connect_failed_event(drv, tb); 3249 break; 3250 case NL80211_CMD_FT_EVENT: 3251 mlme_event_ft_event(drv, tb); 3252 break; 3253 case NL80211_CMD_RADAR_DETECT: 3254 nl80211_radar_event(drv, tb); 3255 break; 3256 case NL80211_CMD_STOP_AP: 3257 nl80211_stop_ap(drv, tb); 3258 break; 3259 case NL80211_CMD_VENDOR: 3260 nl80211_vendor_event(drv, tb); 3261 break; 3262 default: 3263 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: Ignored unknown event " 3264 "(cmd=%d)", cmd); 3265 break; 3266 } 3267} 3268 3269 3270static int process_drv_event(struct nl_msg *msg, void *arg) 3271{ 3272 struct wpa_driver_nl80211_data *drv = arg; 3273 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3274 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3275 struct i802_bss *bss; 3276 int ifidx = -1; 3277 3278 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3279 genlmsg_attrlen(gnlh, 0), NULL); 3280 3281 if (tb[NL80211_ATTR_IFINDEX]) { 3282 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 3283 3284 for (bss = drv->first_bss; bss; bss = bss->next) 3285 if (ifidx == -1 || ifidx == bss->ifindex) { 3286 do_process_drv_event(bss, gnlh->cmd, tb); 3287 return NL_SKIP; 3288 } 3289 wpa_printf(MSG_DEBUG, 3290 "nl80211: Ignored event (cmd=%d) for foreign interface (ifindex %d)", 3291 gnlh->cmd, ifidx); 3292 } else if (tb[NL80211_ATTR_WDEV]) { 3293 u64 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 3294 wpa_printf(MSG_DEBUG, "nl80211: Process event on P2P device"); 3295 for (bss = drv->first_bss; bss; bss = bss->next) { 3296 if (bss->wdev_id_set && wdev_id == bss->wdev_id) { 3297 do_process_drv_event(bss, gnlh->cmd, tb); 3298 return NL_SKIP; 3299 } 3300 } 3301 wpa_printf(MSG_DEBUG, 3302 "nl80211: Ignored event (cmd=%d) for foreign interface (wdev 0x%llx)", 3303 gnlh->cmd, (long long unsigned int) wdev_id); 3304 } 3305 3306 return NL_SKIP; 3307} 3308 3309 3310static int process_global_event(struct nl_msg *msg, void *arg) 3311{ 3312 struct nl80211_global *global = arg; 3313 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3314 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3315 struct wpa_driver_nl80211_data *drv, *tmp; 3316 int ifidx = -1; 3317 struct i802_bss *bss; 3318 u64 wdev_id = 0; 3319 int wdev_id_set = 0; 3320 3321 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3322 genlmsg_attrlen(gnlh, 0), NULL); 3323 3324 if (tb[NL80211_ATTR_IFINDEX]) 3325 ifidx = nla_get_u32(tb[NL80211_ATTR_IFINDEX]); 3326 else if (tb[NL80211_ATTR_WDEV]) { 3327 wdev_id = nla_get_u64(tb[NL80211_ATTR_WDEV]); 3328 wdev_id_set = 1; 3329 } 3330 3331 dl_list_for_each_safe(drv, tmp, &global->interfaces, 3332 struct wpa_driver_nl80211_data, list) { 3333 for (bss = drv->first_bss; bss; bss = bss->next) { 3334 if ((ifidx == -1 && !wdev_id_set) || 3335 ifidx == bss->ifindex || 3336 (wdev_id_set && bss->wdev_id_set && 3337 wdev_id == bss->wdev_id)) { 3338 do_process_drv_event(bss, gnlh->cmd, tb); 3339 return NL_SKIP; 3340 } 3341 } 3342 } 3343 3344 return NL_SKIP; 3345} 3346 3347 3348static int process_bss_event(struct nl_msg *msg, void *arg) 3349{ 3350 struct i802_bss *bss = arg; 3351 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3352 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3353 3354 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3355 genlmsg_attrlen(gnlh, 0), NULL); 3356 3357 wpa_printf(MSG_DEBUG, "nl80211: BSS Event %d (%s) received for %s", 3358 gnlh->cmd, nl80211_command_to_string(gnlh->cmd), 3359 bss->ifname); 3360 3361 switch (gnlh->cmd) { 3362 case NL80211_CMD_FRAME: 3363 case NL80211_CMD_FRAME_TX_STATUS: 3364 mlme_event(bss, gnlh->cmd, tb[NL80211_ATTR_FRAME], 3365 tb[NL80211_ATTR_MAC], tb[NL80211_ATTR_TIMED_OUT], 3366 tb[NL80211_ATTR_WIPHY_FREQ], tb[NL80211_ATTR_ACK], 3367 tb[NL80211_ATTR_COOKIE], 3368 tb[NL80211_ATTR_RX_SIGNAL_DBM]); 3369 break; 3370 case NL80211_CMD_UNEXPECTED_FRAME: 3371 nl80211_spurious_frame(bss, tb, 0); 3372 break; 3373 case NL80211_CMD_UNEXPECTED_4ADDR_FRAME: 3374 nl80211_spurious_frame(bss, tb, 1); 3375 break; 3376 default: 3377 wpa_printf(MSG_DEBUG, "nl80211: Ignored unknown event " 3378 "(cmd=%d)", gnlh->cmd); 3379 break; 3380 } 3381 3382 return NL_SKIP; 3383} 3384 3385 3386static void wpa_driver_nl80211_event_receive(int sock, void *eloop_ctx, 3387 void *handle) 3388{ 3389 struct nl_cb *cb = eloop_ctx; 3390 int res; 3391 3392 wpa_printf(MSG_MSGDUMP, "nl80211: Event message available"); 3393 3394 res = nl_recvmsgs(handle, cb); 3395 if (res < 0) { 3396 wpa_printf(MSG_INFO, "nl80211: %s->nl_recvmsgs failed: %d", 3397 __func__, res); 3398 } 3399} 3400 3401 3402/** 3403 * wpa_driver_nl80211_set_country - ask nl80211 to set the regulatory domain 3404 * @priv: driver_nl80211 private data 3405 * @alpha2_arg: country to which to switch to 3406 * Returns: 0 on success, -1 on failure 3407 * 3408 * This asks nl80211 to set the regulatory domain for given 3409 * country ISO / IEC alpha2. 3410 */ 3411static int wpa_driver_nl80211_set_country(void *priv, const char *alpha2_arg) 3412{ 3413 struct i802_bss *bss = priv; 3414 struct wpa_driver_nl80211_data *drv = bss->drv; 3415 char alpha2[3]; 3416 struct nl_msg *msg; 3417 3418 msg = nlmsg_alloc(); 3419 if (!msg) 3420 return -ENOMEM; 3421 3422 alpha2[0] = alpha2_arg[0]; 3423 alpha2[1] = alpha2_arg[1]; 3424 alpha2[2] = '\0'; 3425 3426 nl80211_cmd(drv, msg, 0, NL80211_CMD_REQ_SET_REG); 3427 3428 NLA_PUT_STRING(msg, NL80211_ATTR_REG_ALPHA2, alpha2); 3429 if (send_and_recv_msgs(drv, msg, NULL, NULL)) 3430 return -EINVAL; 3431 return 0; 3432nla_put_failure: 3433 nlmsg_free(msg); 3434 return -EINVAL; 3435} 3436 3437 3438static int nl80211_get_country(struct nl_msg *msg, void *arg) 3439{ 3440 char *alpha2 = arg; 3441 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 3442 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3443 3444 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3445 genlmsg_attrlen(gnlh, 0), NULL); 3446 if (!tb_msg[NL80211_ATTR_REG_ALPHA2]) { 3447 wpa_printf(MSG_DEBUG, "nl80211: No country information available"); 3448 return NL_SKIP; 3449 } 3450 os_strlcpy(alpha2, nla_data(tb_msg[NL80211_ATTR_REG_ALPHA2]), 3); 3451 return NL_SKIP; 3452} 3453 3454 3455static int wpa_driver_nl80211_get_country(void *priv, char *alpha2) 3456{ 3457 struct i802_bss *bss = priv; 3458 struct wpa_driver_nl80211_data *drv = bss->drv; 3459 struct nl_msg *msg; 3460 int ret; 3461 3462 msg = nlmsg_alloc(); 3463 if (!msg) 3464 return -ENOMEM; 3465 3466 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_REG); 3467 alpha2[0] = '\0'; 3468 ret = send_and_recv_msgs(drv, msg, nl80211_get_country, alpha2); 3469 if (!alpha2[0]) 3470 ret = -1; 3471 3472 return ret; 3473} 3474 3475 3476static int protocol_feature_handler(struct nl_msg *msg, void *arg) 3477{ 3478 u32 *feat = arg; 3479 struct nlattr *tb_msg[NL80211_ATTR_MAX + 1]; 3480 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3481 3482 nla_parse(tb_msg, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3483 genlmsg_attrlen(gnlh, 0), NULL); 3484 3485 if (tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]) 3486 *feat = nla_get_u32(tb_msg[NL80211_ATTR_PROTOCOL_FEATURES]); 3487 3488 return NL_SKIP; 3489} 3490 3491 3492static u32 get_nl80211_protocol_features(struct wpa_driver_nl80211_data *drv) 3493{ 3494 u32 feat = 0; 3495 struct nl_msg *msg; 3496 3497 msg = nlmsg_alloc(); 3498 if (!msg) 3499 goto nla_put_failure; 3500 3501 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_PROTOCOL_FEATURES); 3502 if (send_and_recv_msgs(drv, msg, protocol_feature_handler, &feat) == 0) 3503 return feat; 3504 3505 msg = NULL; 3506nla_put_failure: 3507 nlmsg_free(msg); 3508 return 0; 3509} 3510 3511 3512struct wiphy_info_data { 3513 struct wpa_driver_nl80211_data *drv; 3514 struct wpa_driver_capa *capa; 3515 3516 unsigned int num_multichan_concurrent; 3517 3518 unsigned int error:1; 3519 unsigned int device_ap_sme:1; 3520 unsigned int poll_command_supported:1; 3521 unsigned int data_tx_status:1; 3522 unsigned int monitor_supported:1; 3523 unsigned int auth_supported:1; 3524 unsigned int connect_supported:1; 3525 unsigned int p2p_go_supported:1; 3526 unsigned int p2p_client_supported:1; 3527 unsigned int p2p_concurrent:1; 3528 unsigned int channel_switch_supported:1; 3529 unsigned int set_qos_map_supported:1; 3530 unsigned int have_low_prio_scan:1; 3531}; 3532 3533 3534static unsigned int probe_resp_offload_support(int supp_protocols) 3535{ 3536 unsigned int prot = 0; 3537 3538 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS) 3539 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS; 3540 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_WPS2) 3541 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_WPS2; 3542 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_P2P) 3543 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_P2P; 3544 if (supp_protocols & NL80211_PROBE_RESP_OFFLOAD_SUPPORT_80211U) 3545 prot |= WPA_DRIVER_PROBE_RESP_OFFLOAD_INTERWORKING; 3546 3547 return prot; 3548} 3549 3550 3551static void wiphy_info_supported_iftypes(struct wiphy_info_data *info, 3552 struct nlattr *tb) 3553{ 3554 struct nlattr *nl_mode; 3555 int i; 3556 3557 if (tb == NULL) 3558 return; 3559 3560 nla_for_each_nested(nl_mode, tb, i) { 3561 switch (nla_type(nl_mode)) { 3562 case NL80211_IFTYPE_AP: 3563 info->capa->flags |= WPA_DRIVER_FLAGS_AP; 3564 break; 3565 case NL80211_IFTYPE_ADHOC: 3566 info->capa->flags |= WPA_DRIVER_FLAGS_IBSS; 3567 break; 3568 case NL80211_IFTYPE_P2P_DEVICE: 3569 info->capa->flags |= 3570 WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE; 3571 break; 3572 case NL80211_IFTYPE_P2P_GO: 3573 info->p2p_go_supported = 1; 3574 break; 3575 case NL80211_IFTYPE_P2P_CLIENT: 3576 info->p2p_client_supported = 1; 3577 break; 3578 case NL80211_IFTYPE_MONITOR: 3579 info->monitor_supported = 1; 3580 break; 3581 } 3582 } 3583} 3584 3585 3586static int wiphy_info_iface_comb_process(struct wiphy_info_data *info, 3587 struct nlattr *nl_combi) 3588{ 3589 struct nlattr *tb_comb[NUM_NL80211_IFACE_COMB]; 3590 struct nlattr *tb_limit[NUM_NL80211_IFACE_LIMIT]; 3591 struct nlattr *nl_limit, *nl_mode; 3592 int err, rem_limit, rem_mode; 3593 int combination_has_p2p = 0, combination_has_mgd = 0; 3594 static struct nla_policy 3595 iface_combination_policy[NUM_NL80211_IFACE_COMB] = { 3596 [NL80211_IFACE_COMB_LIMITS] = { .type = NLA_NESTED }, 3597 [NL80211_IFACE_COMB_MAXNUM] = { .type = NLA_U32 }, 3598 [NL80211_IFACE_COMB_STA_AP_BI_MATCH] = { .type = NLA_FLAG }, 3599 [NL80211_IFACE_COMB_NUM_CHANNELS] = { .type = NLA_U32 }, 3600 [NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS] = { .type = NLA_U32 }, 3601 }, 3602 iface_limit_policy[NUM_NL80211_IFACE_LIMIT] = { 3603 [NL80211_IFACE_LIMIT_TYPES] = { .type = NLA_NESTED }, 3604 [NL80211_IFACE_LIMIT_MAX] = { .type = NLA_U32 }, 3605 }; 3606 3607 err = nla_parse_nested(tb_comb, MAX_NL80211_IFACE_COMB, 3608 nl_combi, iface_combination_policy); 3609 if (err || !tb_comb[NL80211_IFACE_COMB_LIMITS] || 3610 !tb_comb[NL80211_IFACE_COMB_MAXNUM] || 3611 !tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]) 3612 return 0; /* broken combination */ 3613 3614 if (tb_comb[NL80211_IFACE_COMB_RADAR_DETECT_WIDTHS]) 3615 info->capa->flags |= WPA_DRIVER_FLAGS_RADAR; 3616 3617 nla_for_each_nested(nl_limit, tb_comb[NL80211_IFACE_COMB_LIMITS], 3618 rem_limit) { 3619 err = nla_parse_nested(tb_limit, MAX_NL80211_IFACE_LIMIT, 3620 nl_limit, iface_limit_policy); 3621 if (err || !tb_limit[NL80211_IFACE_LIMIT_TYPES]) 3622 return 0; /* broken combination */ 3623 3624 nla_for_each_nested(nl_mode, 3625 tb_limit[NL80211_IFACE_LIMIT_TYPES], 3626 rem_mode) { 3627 int ift = nla_type(nl_mode); 3628 if (ift == NL80211_IFTYPE_P2P_GO || 3629 ift == NL80211_IFTYPE_P2P_CLIENT) 3630 combination_has_p2p = 1; 3631 if (ift == NL80211_IFTYPE_STATION) 3632 combination_has_mgd = 1; 3633 } 3634 if (combination_has_p2p && combination_has_mgd) 3635 break; 3636 } 3637 3638 if (combination_has_p2p && combination_has_mgd) { 3639 unsigned int num_channels = 3640 nla_get_u32(tb_comb[NL80211_IFACE_COMB_NUM_CHANNELS]); 3641 3642 info->p2p_concurrent = 1; 3643 if (info->num_multichan_concurrent < num_channels) 3644 info->num_multichan_concurrent = num_channels; 3645 } 3646 3647 return 0; 3648} 3649 3650 3651static void wiphy_info_iface_comb(struct wiphy_info_data *info, 3652 struct nlattr *tb) 3653{ 3654 struct nlattr *nl_combi; 3655 int rem_combi; 3656 3657 if (tb == NULL) 3658 return; 3659 3660 nla_for_each_nested(nl_combi, tb, rem_combi) { 3661 if (wiphy_info_iface_comb_process(info, nl_combi) > 0) 3662 break; 3663 } 3664} 3665 3666 3667static void wiphy_info_supp_cmds(struct wiphy_info_data *info, 3668 struct nlattr *tb) 3669{ 3670 struct nlattr *nl_cmd; 3671 int i; 3672 3673 if (tb == NULL) 3674 return; 3675 3676 nla_for_each_nested(nl_cmd, tb, i) { 3677 switch (nla_get_u32(nl_cmd)) { 3678 case NL80211_CMD_AUTHENTICATE: 3679 info->auth_supported = 1; 3680 break; 3681 case NL80211_CMD_CONNECT: 3682 info->connect_supported = 1; 3683 break; 3684 case NL80211_CMD_START_SCHED_SCAN: 3685 info->capa->sched_scan_supported = 1; 3686 break; 3687 case NL80211_CMD_PROBE_CLIENT: 3688 info->poll_command_supported = 1; 3689 break; 3690 case NL80211_CMD_CHANNEL_SWITCH: 3691 info->channel_switch_supported = 1; 3692 break; 3693 case NL80211_CMD_SET_QOS_MAP: 3694 info->set_qos_map_supported = 1; 3695 break; 3696 } 3697 } 3698} 3699 3700 3701static void wiphy_info_cipher_suites(struct wiphy_info_data *info, 3702 struct nlattr *tb) 3703{ 3704 int i, num; 3705 u32 *ciphers; 3706 3707 if (tb == NULL) 3708 return; 3709 3710 num = nla_len(tb) / sizeof(u32); 3711 ciphers = nla_data(tb); 3712 for (i = 0; i < num; i++) { 3713 u32 c = ciphers[i]; 3714 3715 wpa_printf(MSG_DEBUG, "nl80211: Supported cipher %02x-%02x-%02x:%d", 3716 c >> 24, (c >> 16) & 0xff, 3717 (c >> 8) & 0xff, c & 0xff); 3718 switch (c) { 3719 case WLAN_CIPHER_SUITE_CCMP_256: 3720 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP_256; 3721 break; 3722 case WLAN_CIPHER_SUITE_GCMP_256: 3723 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP_256; 3724 break; 3725 case WLAN_CIPHER_SUITE_CCMP: 3726 info->capa->enc |= WPA_DRIVER_CAPA_ENC_CCMP; 3727 break; 3728 case WLAN_CIPHER_SUITE_GCMP: 3729 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GCMP; 3730 break; 3731 case WLAN_CIPHER_SUITE_TKIP: 3732 info->capa->enc |= WPA_DRIVER_CAPA_ENC_TKIP; 3733 break; 3734 case WLAN_CIPHER_SUITE_WEP104: 3735 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP104; 3736 break; 3737 case WLAN_CIPHER_SUITE_WEP40: 3738 info->capa->enc |= WPA_DRIVER_CAPA_ENC_WEP40; 3739 break; 3740 case WLAN_CIPHER_SUITE_AES_CMAC: 3741 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP; 3742 break; 3743 case WLAN_CIPHER_SUITE_BIP_GMAC_128: 3744 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_128; 3745 break; 3746 case WLAN_CIPHER_SUITE_BIP_GMAC_256: 3747 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_GMAC_256; 3748 break; 3749 case WLAN_CIPHER_SUITE_BIP_CMAC_256: 3750 info->capa->enc |= WPA_DRIVER_CAPA_ENC_BIP_CMAC_256; 3751 break; 3752 case WLAN_CIPHER_SUITE_NO_GROUP_ADDR: 3753 info->capa->enc |= WPA_DRIVER_CAPA_ENC_GTK_NOT_USED; 3754 break; 3755 } 3756 } 3757} 3758 3759 3760static void wiphy_info_max_roc(struct wpa_driver_capa *capa, 3761 struct nlattr *tb) 3762{ 3763 if (tb) 3764 capa->max_remain_on_chan = nla_get_u32(tb); 3765} 3766 3767 3768static void wiphy_info_tdls(struct wpa_driver_capa *capa, struct nlattr *tdls, 3769 struct nlattr *ext_setup) 3770{ 3771 if (tdls == NULL) 3772 return; 3773 3774 wpa_printf(MSG_DEBUG, "nl80211: TDLS supported"); 3775 capa->flags |= WPA_DRIVER_FLAGS_TDLS_SUPPORT; 3776 3777 if (ext_setup) { 3778 wpa_printf(MSG_DEBUG, "nl80211: TDLS external setup"); 3779 capa->flags |= WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP; 3780 } 3781} 3782 3783 3784static void wiphy_info_feature_flags(struct wiphy_info_data *info, 3785 struct nlattr *tb) 3786{ 3787 u32 flags; 3788 struct wpa_driver_capa *capa = info->capa; 3789 3790 if (tb == NULL) 3791 return; 3792 3793 flags = nla_get_u32(tb); 3794 3795 if (flags & NL80211_FEATURE_SK_TX_STATUS) 3796 info->data_tx_status = 1; 3797 3798 if (flags & NL80211_FEATURE_INACTIVITY_TIMER) 3799 capa->flags |= WPA_DRIVER_FLAGS_INACTIVITY_TIMER; 3800 3801 if (flags & NL80211_FEATURE_SAE) 3802 capa->flags |= WPA_DRIVER_FLAGS_SAE; 3803 3804 if (flags & NL80211_FEATURE_NEED_OBSS_SCAN) 3805 capa->flags |= WPA_DRIVER_FLAGS_OBSS_SCAN; 3806 3807 if (flags & NL80211_FEATURE_AP_MODE_CHAN_WIDTH_CHANGE) 3808 capa->flags |= WPA_DRIVER_FLAGS_HT_2040_COEX; 3809 3810 if (flags & NL80211_FEATURE_LOW_PRIORITY_SCAN) 3811 info->have_low_prio_scan = 1; 3812} 3813 3814 3815static void wiphy_info_probe_resp_offload(struct wpa_driver_capa *capa, 3816 struct nlattr *tb) 3817{ 3818 u32 protocols; 3819 3820 if (tb == NULL) 3821 return; 3822 3823 protocols = nla_get_u32(tb); 3824 wpa_printf(MSG_DEBUG, "nl80211: Supports Probe Response offload in AP " 3825 "mode"); 3826 capa->flags |= WPA_DRIVER_FLAGS_PROBE_RESP_OFFLOAD; 3827 capa->probe_resp_offloads = probe_resp_offload_support(protocols); 3828} 3829 3830 3831static void wiphy_info_wowlan_triggers(struct wpa_driver_capa *capa, 3832 struct nlattr *tb) 3833{ 3834 struct nlattr *triggers[MAX_NL80211_WOWLAN_TRIG + 1]; 3835 3836 if (tb == NULL) 3837 return; 3838 3839 if (nla_parse_nested(triggers, MAX_NL80211_WOWLAN_TRIG, 3840 tb, NULL)) 3841 return; 3842 3843 if (triggers[NL80211_WOWLAN_TRIG_ANY]) 3844 capa->wowlan_triggers.any = 1; 3845 if (triggers[NL80211_WOWLAN_TRIG_DISCONNECT]) 3846 capa->wowlan_triggers.disconnect = 1; 3847 if (triggers[NL80211_WOWLAN_TRIG_MAGIC_PKT]) 3848 capa->wowlan_triggers.magic_pkt = 1; 3849 if (triggers[NL80211_WOWLAN_TRIG_GTK_REKEY_FAILURE]) 3850 capa->wowlan_triggers.gtk_rekey_failure = 1; 3851 if (triggers[NL80211_WOWLAN_TRIG_EAP_IDENT_REQUEST]) 3852 capa->wowlan_triggers.eap_identity_req = 1; 3853 if (triggers[NL80211_WOWLAN_TRIG_4WAY_HANDSHAKE]) 3854 capa->wowlan_triggers.four_way_handshake = 1; 3855 if (triggers[NL80211_WOWLAN_TRIG_RFKILL_RELEASE]) 3856 capa->wowlan_triggers.rfkill_release = 1; 3857} 3858 3859 3860static int wiphy_info_handler(struct nl_msg *msg, void *arg) 3861{ 3862 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 3863 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 3864 struct wiphy_info_data *info = arg; 3865 struct wpa_driver_capa *capa = info->capa; 3866 struct wpa_driver_nl80211_data *drv = info->drv; 3867 3868 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 3869 genlmsg_attrlen(gnlh, 0), NULL); 3870 3871 if (tb[NL80211_ATTR_WIPHY_NAME]) 3872 os_strlcpy(drv->phyname, 3873 nla_get_string(tb[NL80211_ATTR_WIPHY_NAME]), 3874 sizeof(drv->phyname)); 3875 if (tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]) 3876 capa->max_scan_ssids = 3877 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCAN_SSIDS]); 3878 3879 if (tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]) 3880 capa->max_sched_scan_ssids = 3881 nla_get_u8(tb[NL80211_ATTR_MAX_NUM_SCHED_SCAN_SSIDS]); 3882 3883 if (tb[NL80211_ATTR_MAX_MATCH_SETS]) 3884 capa->max_match_sets = 3885 nla_get_u8(tb[NL80211_ATTR_MAX_MATCH_SETS]); 3886 3887 if (tb[NL80211_ATTR_MAC_ACL_MAX]) 3888 capa->max_acl_mac_addrs = 3889 nla_get_u8(tb[NL80211_ATTR_MAC_ACL_MAX]); 3890 3891 wiphy_info_supported_iftypes(info, tb[NL80211_ATTR_SUPPORTED_IFTYPES]); 3892 wiphy_info_iface_comb(info, tb[NL80211_ATTR_INTERFACE_COMBINATIONS]); 3893 wiphy_info_supp_cmds(info, tb[NL80211_ATTR_SUPPORTED_COMMANDS]); 3894 wiphy_info_cipher_suites(info, tb[NL80211_ATTR_CIPHER_SUITES]); 3895 3896 if (tb[NL80211_ATTR_OFFCHANNEL_TX_OK]) { 3897 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based " 3898 "off-channel TX"); 3899 capa->flags |= WPA_DRIVER_FLAGS_OFFCHANNEL_TX; 3900 } 3901 3902 if (tb[NL80211_ATTR_ROAM_SUPPORT]) { 3903 wpa_printf(MSG_DEBUG, "nl80211: Using driver-based roaming"); 3904 capa->flags |= WPA_DRIVER_FLAGS_BSS_SELECTION; 3905 } 3906 3907 wiphy_info_max_roc(capa, 3908 tb[NL80211_ATTR_MAX_REMAIN_ON_CHANNEL_DURATION]); 3909 3910 if (tb[NL80211_ATTR_SUPPORT_AP_UAPSD]) 3911 capa->flags |= WPA_DRIVER_FLAGS_AP_UAPSD; 3912 3913 wiphy_info_tdls(capa, tb[NL80211_ATTR_TDLS_SUPPORT], 3914 tb[NL80211_ATTR_TDLS_EXTERNAL_SETUP]); 3915 3916 if (tb[NL80211_ATTR_DEVICE_AP_SME]) 3917 info->device_ap_sme = 1; 3918 3919 wiphy_info_feature_flags(info, tb[NL80211_ATTR_FEATURE_FLAGS]); 3920 wiphy_info_probe_resp_offload(capa, 3921 tb[NL80211_ATTR_PROBE_RESP_OFFLOAD]); 3922 3923 if (tb[NL80211_ATTR_EXT_CAPA] && tb[NL80211_ATTR_EXT_CAPA_MASK] && 3924 drv->extended_capa == NULL) { 3925 drv->extended_capa = 3926 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3927 if (drv->extended_capa) { 3928 os_memcpy(drv->extended_capa, 3929 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 3930 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3931 drv->extended_capa_len = 3932 nla_len(tb[NL80211_ATTR_EXT_CAPA]); 3933 } 3934 drv->extended_capa_mask = 3935 os_malloc(nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3936 if (drv->extended_capa_mask) { 3937 os_memcpy(drv->extended_capa_mask, 3938 nla_data(tb[NL80211_ATTR_EXT_CAPA]), 3939 nla_len(tb[NL80211_ATTR_EXT_CAPA])); 3940 } else { 3941 os_free(drv->extended_capa); 3942 drv->extended_capa = NULL; 3943 drv->extended_capa_len = 0; 3944 } 3945 } 3946 3947 if (tb[NL80211_ATTR_VENDOR_DATA]) { 3948 struct nlattr *nl; 3949 int rem; 3950 3951 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_DATA], rem) { 3952 struct nl80211_vendor_cmd_info *vinfo; 3953 if (nla_len(nl) != sizeof(*vinfo)) { 3954 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 3955 continue; 3956 } 3957 vinfo = nla_data(nl); 3958 switch (vinfo->subcmd) { 3959 case QCA_NL80211_VENDOR_SUBCMD_ROAMING: 3960 drv->roaming_vendor_cmd_avail = 1; 3961 break; 3962 case QCA_NL80211_VENDOR_SUBCMD_DFS_CAPABILITY: 3963 drv->dfs_vendor_cmd_avail = 1; 3964 break; 3965 } 3966 3967 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor command: vendor_id=0x%x subcmd=%u", 3968 vinfo->vendor_id, vinfo->subcmd); 3969 } 3970 } 3971 3972 if (tb[NL80211_ATTR_VENDOR_EVENTS]) { 3973 struct nlattr *nl; 3974 int rem; 3975 3976 nla_for_each_nested(nl, tb[NL80211_ATTR_VENDOR_EVENTS], rem) { 3977 struct nl80211_vendor_cmd_info *vinfo; 3978 if (nla_len(nl) != sizeof(*vinfo)) { 3979 wpa_printf(MSG_DEBUG, "nl80211: Unexpected vendor data info"); 3980 continue; 3981 } 3982 vinfo = nla_data(nl); 3983 wpa_printf(MSG_DEBUG, "nl80211: Supported vendor event: vendor_id=0x%x subcmd=%u", 3984 vinfo->vendor_id, vinfo->subcmd); 3985 } 3986 } 3987 3988 wiphy_info_wowlan_triggers(capa, 3989 tb[NL80211_ATTR_WOWLAN_TRIGGERS_SUPPORTED]); 3990 3991 if (tb[NL80211_ATTR_MAX_AP_ASSOC_STA]) 3992 capa->max_stations = 3993 nla_get_u32(tb[NL80211_ATTR_MAX_AP_ASSOC_STA]); 3994 3995 return NL_SKIP; 3996} 3997 3998 3999static int wpa_driver_nl80211_get_info(struct wpa_driver_nl80211_data *drv, 4000 struct wiphy_info_data *info) 4001{ 4002 u32 feat; 4003 struct nl_msg *msg; 4004 4005 os_memset(info, 0, sizeof(*info)); 4006 info->capa = &drv->capa; 4007 info->drv = drv; 4008 4009 msg = nlmsg_alloc(); 4010 if (!msg) 4011 return -1; 4012 4013 feat = get_nl80211_protocol_features(drv); 4014 if (feat & NL80211_PROTOCOL_FEATURE_SPLIT_WIPHY_DUMP) 4015 nl80211_cmd(drv, msg, NLM_F_DUMP, NL80211_CMD_GET_WIPHY); 4016 else 4017 nl80211_cmd(drv, msg, 0, NL80211_CMD_GET_WIPHY); 4018 4019 NLA_PUT_FLAG(msg, NL80211_ATTR_SPLIT_WIPHY_DUMP); 4020 if (nl80211_set_iface_id(msg, drv->first_bss) < 0) 4021 goto nla_put_failure; 4022 4023 if (send_and_recv_msgs(drv, msg, wiphy_info_handler, info)) 4024 return -1; 4025 4026 if (info->auth_supported) 4027 drv->capa.flags |= WPA_DRIVER_FLAGS_SME; 4028 else if (!info->connect_supported) { 4029 wpa_printf(MSG_INFO, "nl80211: Driver does not support " 4030 "authentication/association or connect commands"); 4031 info->error = 1; 4032 } 4033 4034 if (info->p2p_go_supported && info->p2p_client_supported) 4035 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CAPABLE; 4036 if (info->p2p_concurrent) { 4037 wpa_printf(MSG_DEBUG, "nl80211: Use separate P2P group " 4038 "interface (driver advertised support)"); 4039 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_CONCURRENT; 4040 drv->capa.flags |= WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P; 4041 } 4042 if (info->num_multichan_concurrent > 1) { 4043 wpa_printf(MSG_DEBUG, "nl80211: Enable multi-channel " 4044 "concurrent (driver advertised support)"); 4045 drv->capa.num_multichan_concurrent = 4046 info->num_multichan_concurrent; 4047 } 4048 4049 /* default to 5000 since early versions of mac80211 don't set it */ 4050 if (!drv->capa.max_remain_on_chan) 4051 drv->capa.max_remain_on_chan = 5000; 4052 4053 if (info->channel_switch_supported) 4054 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_CSA; 4055 4056 return 0; 4057nla_put_failure: 4058 nlmsg_free(msg); 4059 return -1; 4060} 4061 4062 4063static int wpa_driver_nl80211_capa(struct wpa_driver_nl80211_data *drv) 4064{ 4065 struct wiphy_info_data info; 4066 if (wpa_driver_nl80211_get_info(drv, &info)) 4067 return -1; 4068 4069 if (info.error) 4070 return -1; 4071 4072 drv->has_capability = 1; 4073 drv->capa.key_mgmt = WPA_DRIVER_CAPA_KEY_MGMT_WPA | 4074 WPA_DRIVER_CAPA_KEY_MGMT_WPA_PSK | 4075 WPA_DRIVER_CAPA_KEY_MGMT_WPA2 | 4076 WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK; 4077 drv->capa.auth = WPA_DRIVER_AUTH_OPEN | 4078 WPA_DRIVER_AUTH_SHARED | 4079 WPA_DRIVER_AUTH_LEAP; 4080 4081 drv->capa.flags |= WPA_DRIVER_FLAGS_SANE_ERROR_CODES; 4082 drv->capa.flags |= WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE; 4083 drv->capa.flags |= WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 4084 4085 /* 4086 * As all cfg80211 drivers must support cases where the AP interface is 4087 * removed without the knowledge of wpa_supplicant/hostapd, e.g., in 4088 * case that the user space daemon has crashed, they must be able to 4089 * cleanup all stations and key entries in the AP tear down flow. Thus, 4090 * this flag can/should always be set for cfg80211 drivers. 4091 */ 4092 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_TEARDOWN_SUPPORT; 4093 4094 if (!info.device_ap_sme) { 4095 drv->capa.flags |= WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS; 4096 4097 /* 4098 * No AP SME is currently assumed to also indicate no AP MLME 4099 * in the driver/firmware. 4100 */ 4101 drv->capa.flags |= WPA_DRIVER_FLAGS_AP_MLME; 4102 } 4103 4104 drv->device_ap_sme = info.device_ap_sme; 4105 drv->poll_command_supported = info.poll_command_supported; 4106 drv->data_tx_status = info.data_tx_status; 4107 if (info.set_qos_map_supported) 4108 drv->capa.flags |= WPA_DRIVER_FLAGS_QOS_MAPPING; 4109 drv->have_low_prio_scan = info.have_low_prio_scan; 4110 4111 /* 4112 * If poll command and tx status are supported, mac80211 is new enough 4113 * to have everything we need to not need monitor interfaces. 4114 */ 4115 drv->use_monitor = !info.poll_command_supported || !info.data_tx_status; 4116 4117 if (drv->device_ap_sme && drv->use_monitor) { 4118 /* 4119 * Non-mac80211 drivers may not support monitor interface. 4120 * Make sure we do not get stuck with incorrect capability here 4121 * by explicitly testing this. 4122 */ 4123 if (!info.monitor_supported) { 4124 wpa_printf(MSG_DEBUG, "nl80211: Disable use_monitor " 4125 "with device_ap_sme since no monitor mode " 4126 "support detected"); 4127 drv->use_monitor = 0; 4128 } 4129 } 4130 4131 /* 4132 * If we aren't going to use monitor interfaces, but the 4133 * driver doesn't support data TX status, we won't get TX 4134 * status for EAPOL frames. 4135 */ 4136 if (!drv->use_monitor && !info.data_tx_status) 4137 drv->capa.flags &= ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 4138 4139 return 0; 4140} 4141 4142 4143#ifdef ANDROID 4144static int android_genl_ctrl_resolve(struct nl_handle *handle, 4145 const char *name) 4146{ 4147 /* 4148 * Android ICS has very minimal genl_ctrl_resolve() implementation, so 4149 * need to work around that. 4150 */ 4151 struct nl_cache *cache = NULL; 4152 struct genl_family *nl80211 = NULL; 4153 int id = -1; 4154 4155 if (genl_ctrl_alloc_cache(handle, &cache) < 0) { 4156 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate generic " 4157 "netlink cache"); 4158 goto fail; 4159 } 4160 4161 nl80211 = genl_ctrl_search_by_name(cache, name); 4162 if (nl80211 == NULL) 4163 goto fail; 4164 4165 id = genl_family_get_id(nl80211); 4166 4167fail: 4168 if (nl80211) 4169 genl_family_put(nl80211); 4170 if (cache) 4171 nl_cache_free(cache); 4172 4173 return id; 4174} 4175#define genl_ctrl_resolve android_genl_ctrl_resolve 4176#endif /* ANDROID */ 4177 4178 4179static int wpa_driver_nl80211_init_nl_global(struct nl80211_global *global) 4180{ 4181 int ret; 4182 4183 global->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 4184 if (global->nl_cb == NULL) { 4185 wpa_printf(MSG_ERROR, "nl80211: Failed to allocate netlink " 4186 "callbacks"); 4187 return -1; 4188 } 4189 4190 global->nl = nl_create_handle(global->nl_cb, "nl"); 4191 if (global->nl == NULL) 4192 goto err; 4193 4194 global->nl80211_id = genl_ctrl_resolve(global->nl, "nl80211"); 4195 if (global->nl80211_id < 0) { 4196 wpa_printf(MSG_ERROR, "nl80211: 'nl80211' generic netlink not " 4197 "found"); 4198 goto err; 4199 } 4200 4201 global->nl_event = nl_create_handle(global->nl_cb, "event"); 4202 if (global->nl_event == NULL) 4203 goto err; 4204 4205 ret = nl_get_multicast_id(global, "nl80211", "scan"); 4206 if (ret >= 0) 4207 ret = nl_socket_add_membership(global->nl_event, ret); 4208 if (ret < 0) { 4209 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 4210 "membership for scan events: %d (%s)", 4211 ret, strerror(-ret)); 4212 goto err; 4213 } 4214 4215 ret = nl_get_multicast_id(global, "nl80211", "mlme"); 4216 if (ret >= 0) 4217 ret = nl_socket_add_membership(global->nl_event, ret); 4218 if (ret < 0) { 4219 wpa_printf(MSG_ERROR, "nl80211: Could not add multicast " 4220 "membership for mlme events: %d (%s)", 4221 ret, strerror(-ret)); 4222 goto err; 4223 } 4224 4225 ret = nl_get_multicast_id(global, "nl80211", "regulatory"); 4226 if (ret >= 0) 4227 ret = nl_socket_add_membership(global->nl_event, ret); 4228 if (ret < 0) { 4229 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 4230 "membership for regulatory events: %d (%s)", 4231 ret, strerror(-ret)); 4232 /* Continue without regulatory events */ 4233 } 4234 4235 ret = nl_get_multicast_id(global, "nl80211", "vendor"); 4236 if (ret >= 0) 4237 ret = nl_socket_add_membership(global->nl_event, ret); 4238 if (ret < 0) { 4239 wpa_printf(MSG_DEBUG, "nl80211: Could not add multicast " 4240 "membership for vendor events: %d (%s)", 4241 ret, strerror(-ret)); 4242 /* Continue without vendor events */ 4243 } 4244 4245 nl_cb_set(global->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 4246 no_seq_check, NULL); 4247 nl_cb_set(global->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 4248 process_global_event, global); 4249 4250 nl80211_register_eloop_read(&global->nl_event, 4251 wpa_driver_nl80211_event_receive, 4252 global->nl_cb); 4253 4254 return 0; 4255 4256err: 4257 nl_destroy_handles(&global->nl_event); 4258 nl_destroy_handles(&global->nl); 4259 nl_cb_put(global->nl_cb); 4260 global->nl_cb = NULL; 4261 return -1; 4262} 4263 4264 4265static int wpa_driver_nl80211_init_nl(struct wpa_driver_nl80211_data *drv) 4266{ 4267 drv->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 4268 if (!drv->nl_cb) { 4269 wpa_printf(MSG_ERROR, "nl80211: Failed to alloc cb struct"); 4270 return -1; 4271 } 4272 4273 nl_cb_set(drv->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 4274 no_seq_check, NULL); 4275 nl_cb_set(drv->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 4276 process_drv_event, drv); 4277 4278 return 0; 4279} 4280 4281 4282static void wpa_driver_nl80211_rfkill_blocked(void *ctx) 4283{ 4284 wpa_printf(MSG_DEBUG, "nl80211: RFKILL blocked"); 4285 /* 4286 * This may be for any interface; use ifdown event to disable 4287 * interface. 4288 */ 4289} 4290 4291 4292static void wpa_driver_nl80211_rfkill_unblocked(void *ctx) 4293{ 4294 struct wpa_driver_nl80211_data *drv = ctx; 4295 wpa_printf(MSG_DEBUG, "nl80211: RFKILL unblocked"); 4296 if (i802_set_iface_flags(drv->first_bss, 1)) { 4297 wpa_printf(MSG_DEBUG, "nl80211: Could not set interface UP " 4298 "after rfkill unblock"); 4299 return; 4300 } 4301 /* rtnetlink ifup handler will report interface as enabled */ 4302} 4303 4304 4305static void wpa_driver_nl80211_handle_eapol_tx_status(int sock, 4306 void *eloop_ctx, 4307 void *handle) 4308{ 4309 struct wpa_driver_nl80211_data *drv = eloop_ctx; 4310 u8 data[2048]; 4311 struct msghdr msg; 4312 struct iovec entry; 4313 u8 control[512]; 4314 struct cmsghdr *cmsg; 4315 int res, found_ee = 0, found_wifi = 0, acked = 0; 4316 union wpa_event_data event; 4317 4318 memset(&msg, 0, sizeof(msg)); 4319 msg.msg_iov = &entry; 4320 msg.msg_iovlen = 1; 4321 entry.iov_base = data; 4322 entry.iov_len = sizeof(data); 4323 msg.msg_control = &control; 4324 msg.msg_controllen = sizeof(control); 4325 4326 res = recvmsg(sock, &msg, MSG_ERRQUEUE); 4327 /* if error or not fitting 802.3 header, return */ 4328 if (res < 14) 4329 return; 4330 4331 for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) 4332 { 4333 if (cmsg->cmsg_level == SOL_SOCKET && 4334 cmsg->cmsg_type == SCM_WIFI_STATUS) { 4335 int *ack; 4336 4337 found_wifi = 1; 4338 ack = (void *)CMSG_DATA(cmsg); 4339 acked = *ack; 4340 } 4341 4342 if (cmsg->cmsg_level == SOL_PACKET && 4343 cmsg->cmsg_type == PACKET_TX_TIMESTAMP) { 4344 struct sock_extended_err *err = 4345 (struct sock_extended_err *)CMSG_DATA(cmsg); 4346 4347 if (err->ee_origin == SO_EE_ORIGIN_TXSTATUS) 4348 found_ee = 1; 4349 } 4350 } 4351 4352 if (!found_ee || !found_wifi) 4353 return; 4354 4355 memset(&event, 0, sizeof(event)); 4356 event.eapol_tx_status.dst = data; 4357 event.eapol_tx_status.data = data + 14; 4358 event.eapol_tx_status.data_len = res - 14; 4359 event.eapol_tx_status.ack = acked; 4360 wpa_supplicant_event(drv->ctx, EVENT_EAPOL_TX_STATUS, &event); 4361} 4362 4363 4364static int nl80211_init_bss(struct i802_bss *bss) 4365{ 4366 bss->nl_cb = nl_cb_alloc(NL_CB_DEFAULT); 4367 if (!bss->nl_cb) 4368 return -1; 4369 4370 nl_cb_set(bss->nl_cb, NL_CB_SEQ_CHECK, NL_CB_CUSTOM, 4371 no_seq_check, NULL); 4372 nl_cb_set(bss->nl_cb, NL_CB_VALID, NL_CB_CUSTOM, 4373 process_bss_event, bss); 4374 4375 return 0; 4376} 4377 4378 4379static void nl80211_destroy_bss(struct i802_bss *bss) 4380{ 4381 nl_cb_put(bss->nl_cb); 4382 bss->nl_cb = NULL; 4383} 4384 4385 4386static void * wpa_driver_nl80211_drv_init(void *ctx, const char *ifname, 4387 void *global_priv, int hostapd, 4388 const u8 *set_addr) 4389{ 4390 struct wpa_driver_nl80211_data *drv; 4391 struct rfkill_config *rcfg; 4392 struct i802_bss *bss; 4393 4394 if (global_priv == NULL) 4395 return NULL; 4396 drv = os_zalloc(sizeof(*drv)); 4397 if (drv == NULL) 4398 return NULL; 4399 drv->global = global_priv; 4400 drv->ctx = ctx; 4401 drv->hostapd = !!hostapd; 4402 drv->eapol_sock = -1; 4403 drv->num_if_indices = sizeof(drv->default_if_indices) / sizeof(int); 4404 drv->if_indices = drv->default_if_indices; 4405 4406 drv->first_bss = os_zalloc(sizeof(*drv->first_bss)); 4407 if (!drv->first_bss) { 4408 os_free(drv); 4409 return NULL; 4410 } 4411 bss = drv->first_bss; 4412 bss->drv = drv; 4413 bss->ctx = ctx; 4414 4415 os_strlcpy(bss->ifname, ifname, sizeof(bss->ifname)); 4416 drv->monitor_ifidx = -1; 4417 drv->monitor_sock = -1; 4418 drv->eapol_tx_sock = -1; 4419 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 4420 4421 if (wpa_driver_nl80211_init_nl(drv)) { 4422 os_free(drv); 4423 return NULL; 4424 } 4425 4426 if (nl80211_init_bss(bss)) 4427 goto failed; 4428 4429 rcfg = os_zalloc(sizeof(*rcfg)); 4430 if (rcfg == NULL) 4431 goto failed; 4432 rcfg->ctx = drv; 4433 os_strlcpy(rcfg->ifname, ifname, sizeof(rcfg->ifname)); 4434 rcfg->blocked_cb = wpa_driver_nl80211_rfkill_blocked; 4435 rcfg->unblocked_cb = wpa_driver_nl80211_rfkill_unblocked; 4436 drv->rfkill = rfkill_init(rcfg); 4437 if (drv->rfkill == NULL) { 4438 wpa_printf(MSG_DEBUG, "nl80211: RFKILL status not available"); 4439 os_free(rcfg); 4440 } 4441 4442 if (linux_iface_up(drv->global->ioctl_sock, ifname) > 0) 4443 drv->start_iface_up = 1; 4444 4445 if (wpa_driver_nl80211_finish_drv_init(drv, set_addr, 1)) 4446 goto failed; 4447 4448 drv->eapol_tx_sock = socket(PF_PACKET, SOCK_DGRAM, 0); 4449 if (drv->eapol_tx_sock < 0) 4450 goto failed; 4451 4452 if (drv->data_tx_status) { 4453 int enabled = 1; 4454 4455 if (setsockopt(drv->eapol_tx_sock, SOL_SOCKET, SO_WIFI_STATUS, 4456 &enabled, sizeof(enabled)) < 0) { 4457 wpa_printf(MSG_DEBUG, 4458 "nl80211: wifi status sockopt failed\n"); 4459 drv->data_tx_status = 0; 4460 if (!drv->use_monitor) 4461 drv->capa.flags &= 4462 ~WPA_DRIVER_FLAGS_EAPOL_TX_STATUS; 4463 } else { 4464 eloop_register_read_sock(drv->eapol_tx_sock, 4465 wpa_driver_nl80211_handle_eapol_tx_status, 4466 drv, NULL); 4467 } 4468 } 4469 4470 if (drv->global) { 4471 dl_list_add(&drv->global->interfaces, &drv->list); 4472 drv->in_interface_list = 1; 4473 } 4474 4475 return bss; 4476 4477failed: 4478 wpa_driver_nl80211_deinit(bss); 4479 return NULL; 4480} 4481 4482 4483/** 4484 * wpa_driver_nl80211_init - Initialize nl80211 driver interface 4485 * @ctx: context to be used when calling wpa_supplicant functions, 4486 * e.g., wpa_supplicant_event() 4487 * @ifname: interface name, e.g., wlan0 4488 * @global_priv: private driver global data from global_init() 4489 * Returns: Pointer to private data, %NULL on failure 4490 */ 4491static void * wpa_driver_nl80211_init(void *ctx, const char *ifname, 4492 void *global_priv) 4493{ 4494 return wpa_driver_nl80211_drv_init(ctx, ifname, global_priv, 0, NULL); 4495} 4496 4497 4498static int nl80211_register_frame(struct i802_bss *bss, 4499 struct nl_handle *nl_handle, 4500 u16 type, const u8 *match, size_t match_len) 4501{ 4502 struct wpa_driver_nl80211_data *drv = bss->drv; 4503 struct nl_msg *msg; 4504 int ret = -1; 4505 char buf[30]; 4506 4507 msg = nlmsg_alloc(); 4508 if (!msg) 4509 return -1; 4510 4511 buf[0] = '\0'; 4512 wpa_snprintf_hex(buf, sizeof(buf), match, match_len); 4513 wpa_printf(MSG_DEBUG, "nl80211: Register frame type=0x%x (%s) nl_handle=%p match=%s", 4514 type, fc2str(type), nl_handle, buf); 4515 4516 nl80211_cmd(drv, msg, 0, NL80211_CMD_REGISTER_ACTION); 4517 4518 if (nl80211_set_iface_id(msg, bss) < 0) 4519 goto nla_put_failure; 4520 4521 NLA_PUT_U16(msg, NL80211_ATTR_FRAME_TYPE, type); 4522 NLA_PUT(msg, NL80211_ATTR_FRAME_MATCH, match_len, match); 4523 4524 ret = send_and_recv(drv->global, nl_handle, msg, NULL, NULL); 4525 msg = NULL; 4526 if (ret) { 4527 wpa_printf(MSG_DEBUG, "nl80211: Register frame command " 4528 "failed (type=%u): ret=%d (%s)", 4529 type, ret, strerror(-ret)); 4530 wpa_hexdump(MSG_DEBUG, "nl80211: Register frame match", 4531 match, match_len); 4532 goto nla_put_failure; 4533 } 4534 ret = 0; 4535nla_put_failure: 4536 nlmsg_free(msg); 4537 return ret; 4538} 4539 4540 4541static int nl80211_alloc_mgmt_handle(struct i802_bss *bss) 4542{ 4543 struct wpa_driver_nl80211_data *drv = bss->drv; 4544 4545 if (bss->nl_mgmt) { 4546 wpa_printf(MSG_DEBUG, "nl80211: Mgmt reporting " 4547 "already on! (nl_mgmt=%p)", bss->nl_mgmt); 4548 return -1; 4549 } 4550 4551 bss->nl_mgmt = nl_create_handle(drv->nl_cb, "mgmt"); 4552 if (bss->nl_mgmt == NULL) 4553 return -1; 4554 4555 return 0; 4556} 4557 4558 4559static void nl80211_mgmt_handle_register_eloop(struct i802_bss *bss) 4560{ 4561 nl80211_register_eloop_read(&bss->nl_mgmt, 4562 wpa_driver_nl80211_event_receive, 4563 bss->nl_cb); 4564} 4565 4566 4567static int nl80211_register_action_frame(struct i802_bss *bss, 4568 const u8 *match, size_t match_len) 4569{ 4570 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_ACTION << 4); 4571 return nl80211_register_frame(bss, bss->nl_mgmt, 4572 type, match, match_len); 4573} 4574 4575 4576static int nl80211_mgmt_subscribe_non_ap(struct i802_bss *bss) 4577{ 4578 struct wpa_driver_nl80211_data *drv = bss->drv; 4579 int ret = 0; 4580 4581 if (nl80211_alloc_mgmt_handle(bss)) 4582 return -1; 4583 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with non-AP " 4584 "handle %p", bss->nl_mgmt); 4585 4586 if (drv->nlmode == NL80211_IFTYPE_ADHOC) { 4587 u16 type = (WLAN_FC_TYPE_MGMT << 2) | (WLAN_FC_STYPE_AUTH << 4); 4588 4589 /* register for any AUTH message */ 4590 nl80211_register_frame(bss, bss->nl_mgmt, type, NULL, 0); 4591 } 4592 4593#ifdef CONFIG_INTERWORKING 4594 /* QoS Map Configure */ 4595 if (nl80211_register_action_frame(bss, (u8 *) "\x01\x04", 2) < 0) 4596 ret = -1; 4597#endif /* CONFIG_INTERWORKING */ 4598#if defined(CONFIG_P2P) || defined(CONFIG_INTERWORKING) 4599 /* GAS Initial Request */ 4600 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0a", 2) < 0) 4601 ret = -1; 4602 /* GAS Initial Response */ 4603 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0b", 2) < 0) 4604 ret = -1; 4605 /* GAS Comeback Request */ 4606 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0c", 2) < 0) 4607 ret = -1; 4608 /* GAS Comeback Response */ 4609 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0d", 2) < 0) 4610 ret = -1; 4611 /* Protected GAS Initial Request */ 4612 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0a", 2) < 0) 4613 ret = -1; 4614 /* Protected GAS Initial Response */ 4615 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0b", 2) < 0) 4616 ret = -1; 4617 /* Protected GAS Comeback Request */ 4618 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0c", 2) < 0) 4619 ret = -1; 4620 /* Protected GAS Comeback Response */ 4621 if (nl80211_register_action_frame(bss, (u8 *) "\x09\x0d", 2) < 0) 4622 ret = -1; 4623#endif /* CONFIG_P2P || CONFIG_INTERWORKING */ 4624#ifdef CONFIG_P2P 4625 /* P2P Public Action */ 4626 if (nl80211_register_action_frame(bss, 4627 (u8 *) "\x04\x09\x50\x6f\x9a\x09", 4628 6) < 0) 4629 ret = -1; 4630 /* P2P Action */ 4631 if (nl80211_register_action_frame(bss, 4632 (u8 *) "\x7f\x50\x6f\x9a\x09", 4633 5) < 0) 4634 ret = -1; 4635#endif /* CONFIG_P2P */ 4636#ifdef CONFIG_IEEE80211W 4637 /* SA Query Response */ 4638 if (nl80211_register_action_frame(bss, (u8 *) "\x08\x01", 2) < 0) 4639 ret = -1; 4640#endif /* CONFIG_IEEE80211W */ 4641#ifdef CONFIG_TDLS 4642 if ((drv->capa.flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)) { 4643 /* TDLS Discovery Response */ 4644 if (nl80211_register_action_frame(bss, (u8 *) "\x04\x0e", 2) < 4645 0) 4646 ret = -1; 4647 } 4648#endif /* CONFIG_TDLS */ 4649 4650 /* FT Action frames */ 4651 if (nl80211_register_action_frame(bss, (u8 *) "\x06", 1) < 0) 4652 ret = -1; 4653 else 4654 drv->capa.key_mgmt |= WPA_DRIVER_CAPA_KEY_MGMT_FT | 4655 WPA_DRIVER_CAPA_KEY_MGMT_FT_PSK; 4656 4657 /* WNM - BSS Transition Management Request */ 4658 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x07", 2) < 0) 4659 ret = -1; 4660 /* WNM-Sleep Mode Response */ 4661 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x11", 2) < 0) 4662 ret = -1; 4663 4664#ifdef CONFIG_HS20 4665 /* WNM-Notification */ 4666 if (nl80211_register_action_frame(bss, (u8 *) "\x0a\x1a", 2) < 0) 4667 ret = -1; 4668#endif /* CONFIG_HS20 */ 4669 4670 nl80211_mgmt_handle_register_eloop(bss); 4671 4672 return ret; 4673} 4674 4675 4676static int nl80211_register_spurious_class3(struct i802_bss *bss) 4677{ 4678 struct wpa_driver_nl80211_data *drv = bss->drv; 4679 struct nl_msg *msg; 4680 int ret = -1; 4681 4682 msg = nlmsg_alloc(); 4683 if (!msg) 4684 return -1; 4685 4686 nl80211_cmd(drv, msg, 0, NL80211_CMD_UNEXPECTED_FRAME); 4687 4688 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, bss->ifindex); 4689 4690 ret = send_and_recv(drv->global, bss->nl_mgmt, msg, NULL, NULL); 4691 msg = NULL; 4692 if (ret) { 4693 wpa_printf(MSG_DEBUG, "nl80211: Register spurious class3 " 4694 "failed: ret=%d (%s)", 4695 ret, strerror(-ret)); 4696 goto nla_put_failure; 4697 } 4698 ret = 0; 4699nla_put_failure: 4700 nlmsg_free(msg); 4701 return ret; 4702} 4703 4704 4705static int nl80211_mgmt_subscribe_ap(struct i802_bss *bss) 4706{ 4707 static const int stypes[] = { 4708 WLAN_FC_STYPE_AUTH, 4709 WLAN_FC_STYPE_ASSOC_REQ, 4710 WLAN_FC_STYPE_REASSOC_REQ, 4711 WLAN_FC_STYPE_DISASSOC, 4712 WLAN_FC_STYPE_DEAUTH, 4713 WLAN_FC_STYPE_ACTION, 4714 WLAN_FC_STYPE_PROBE_REQ, 4715/* Beacon doesn't work as mac80211 doesn't currently allow 4716 * it, but it wouldn't really be the right thing anyway as 4717 * it isn't per interface ... maybe just dump the scan 4718 * results periodically for OLBC? 4719 */ 4720 /* WLAN_FC_STYPE_BEACON, */ 4721 }; 4722 unsigned int i; 4723 4724 if (nl80211_alloc_mgmt_handle(bss)) 4725 return -1; 4726 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 4727 "handle %p", bss->nl_mgmt); 4728 4729 for (i = 0; i < ARRAY_SIZE(stypes); i++) { 4730 if (nl80211_register_frame(bss, bss->nl_mgmt, 4731 (WLAN_FC_TYPE_MGMT << 2) | 4732 (stypes[i] << 4), 4733 NULL, 0) < 0) { 4734 goto out_err; 4735 } 4736 } 4737 4738 if (nl80211_register_spurious_class3(bss)) 4739 goto out_err; 4740 4741 if (nl80211_get_wiphy_data_ap(bss) == NULL) 4742 goto out_err; 4743 4744 nl80211_mgmt_handle_register_eloop(bss); 4745 return 0; 4746 4747out_err: 4748 nl_destroy_handles(&bss->nl_mgmt); 4749 return -1; 4750} 4751 4752 4753static int nl80211_mgmt_subscribe_ap_dev_sme(struct i802_bss *bss) 4754{ 4755 if (nl80211_alloc_mgmt_handle(bss)) 4756 return -1; 4757 wpa_printf(MSG_DEBUG, "nl80211: Subscribe to mgmt frames with AP " 4758 "handle %p (device SME)", bss->nl_mgmt); 4759 4760 if (nl80211_register_frame(bss, bss->nl_mgmt, 4761 (WLAN_FC_TYPE_MGMT << 2) | 4762 (WLAN_FC_STYPE_ACTION << 4), 4763 NULL, 0) < 0) 4764 goto out_err; 4765 4766 nl80211_mgmt_handle_register_eloop(bss); 4767 return 0; 4768 4769out_err: 4770 nl_destroy_handles(&bss->nl_mgmt); 4771 return -1; 4772} 4773 4774 4775static void nl80211_mgmt_unsubscribe(struct i802_bss *bss, const char *reason) 4776{ 4777 if (bss->nl_mgmt == NULL) 4778 return; 4779 wpa_printf(MSG_DEBUG, "nl80211: Unsubscribe mgmt frames handle %p " 4780 "(%s)", bss->nl_mgmt, reason); 4781 nl80211_destroy_eloop_handle(&bss->nl_mgmt); 4782 4783 nl80211_put_wiphy_data_ap(bss); 4784} 4785 4786 4787static void wpa_driver_nl80211_send_rfkill(void *eloop_ctx, void *timeout_ctx) 4788{ 4789 wpa_supplicant_event(timeout_ctx, EVENT_INTERFACE_DISABLED, NULL); 4790} 4791 4792 4793static void nl80211_del_p2pdev(struct i802_bss *bss) 4794{ 4795 struct wpa_driver_nl80211_data *drv = bss->drv; 4796 struct nl_msg *msg; 4797 int ret; 4798 4799 msg = nlmsg_alloc(); 4800 if (!msg) 4801 return; 4802 4803 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_INTERFACE); 4804 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 4805 4806 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4807 msg = NULL; 4808 4809 wpa_printf(MSG_DEBUG, "nl80211: Delete P2P Device %s (0x%llx): %s", 4810 bss->ifname, (long long unsigned int) bss->wdev_id, 4811 strerror(-ret)); 4812 4813nla_put_failure: 4814 nlmsg_free(msg); 4815} 4816 4817 4818static int nl80211_set_p2pdev(struct i802_bss *bss, int start) 4819{ 4820 struct wpa_driver_nl80211_data *drv = bss->drv; 4821 struct nl_msg *msg; 4822 int ret = -1; 4823 4824 msg = nlmsg_alloc(); 4825 if (!msg) 4826 return -1; 4827 4828 if (start) 4829 nl80211_cmd(drv, msg, 0, NL80211_CMD_START_P2P_DEVICE); 4830 else 4831 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_P2P_DEVICE); 4832 4833 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, bss->wdev_id); 4834 4835 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 4836 msg = NULL; 4837 4838 wpa_printf(MSG_DEBUG, "nl80211: %s P2P Device %s (0x%llx): %s", 4839 start ? "Start" : "Stop", 4840 bss->ifname, (long long unsigned int) bss->wdev_id, 4841 strerror(-ret)); 4842 4843nla_put_failure: 4844 nlmsg_free(msg); 4845 return ret; 4846} 4847 4848 4849static int i802_set_iface_flags(struct i802_bss *bss, int up) 4850{ 4851 enum nl80211_iftype nlmode; 4852 4853 nlmode = nl80211_get_ifmode(bss); 4854 if (nlmode != NL80211_IFTYPE_P2P_DEVICE) { 4855 return linux_set_iface_flags(bss->drv->global->ioctl_sock, 4856 bss->ifname, up); 4857 } 4858 4859 /* P2P Device has start/stop which is equivalent */ 4860 return nl80211_set_p2pdev(bss, up); 4861} 4862 4863 4864static int 4865wpa_driver_nl80211_finish_drv_init(struct wpa_driver_nl80211_data *drv, 4866 const u8 *set_addr, int first) 4867{ 4868 struct i802_bss *bss = drv->first_bss; 4869 int send_rfkill_event = 0; 4870 enum nl80211_iftype nlmode; 4871 4872 drv->ifindex = if_nametoindex(bss->ifname); 4873 bss->ifindex = drv->ifindex; 4874 bss->wdev_id = drv->global->if_add_wdevid; 4875 bss->wdev_id_set = drv->global->if_add_wdevid_set; 4876 4877 bss->if_dynamic = drv->ifindex == drv->global->if_add_ifindex; 4878 bss->if_dynamic = bss->if_dynamic || drv->global->if_add_wdevid_set; 4879 drv->global->if_add_wdevid_set = 0; 4880 4881 if (!bss->if_dynamic && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP) 4882 bss->static_ap = 1; 4883 4884 if (wpa_driver_nl80211_capa(drv)) 4885 return -1; 4886 4887 wpa_printf(MSG_DEBUG, "nl80211: interface %s in phy %s", 4888 bss->ifname, drv->phyname); 4889 4890 if (set_addr && 4891 (linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0) || 4892 linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 4893 set_addr))) 4894 return -1; 4895 4896 if (first && nl80211_get_ifmode(bss) == NL80211_IFTYPE_AP) 4897 drv->start_mode_ap = 1; 4898 4899 if (drv->hostapd || bss->static_ap) 4900 nlmode = NL80211_IFTYPE_AP; 4901 else if (bss->if_dynamic) 4902 nlmode = nl80211_get_ifmode(bss); 4903 else 4904 nlmode = NL80211_IFTYPE_STATION; 4905 4906 if (wpa_driver_nl80211_set_mode(bss, nlmode) < 0) { 4907 wpa_printf(MSG_ERROR, "nl80211: Could not configure driver mode"); 4908 return -1; 4909 } 4910 4911 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 4912 nl80211_get_macaddr(bss); 4913 4914 if (!rfkill_is_blocked(drv->rfkill)) { 4915 int ret = i802_set_iface_flags(bss, 1); 4916 if (ret) { 4917 wpa_printf(MSG_ERROR, "nl80211: Could not set " 4918 "interface '%s' UP", bss->ifname); 4919 return ret; 4920 } 4921 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 4922 return ret; 4923 } else { 4924 wpa_printf(MSG_DEBUG, "nl80211: Could not yet enable " 4925 "interface '%s' due to rfkill", bss->ifname); 4926 if (nlmode == NL80211_IFTYPE_P2P_DEVICE) 4927 return 0; 4928 drv->if_disabled = 1; 4929 send_rfkill_event = 1; 4930 } 4931 4932 if (!drv->hostapd) 4933 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 4934 1, IF_OPER_DORMANT); 4935 4936 if (linux_get_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 4937 bss->addr)) 4938 return -1; 4939 os_memcpy(drv->perm_addr, bss->addr, ETH_ALEN); 4940 4941 if (send_rfkill_event) { 4942 eloop_register_timeout(0, 0, wpa_driver_nl80211_send_rfkill, 4943 drv, drv->ctx); 4944 } 4945 4946 return 0; 4947} 4948 4949 4950static int wpa_driver_nl80211_del_beacon(struct wpa_driver_nl80211_data *drv) 4951{ 4952 struct nl_msg *msg; 4953 4954 msg = nlmsg_alloc(); 4955 if (!msg) 4956 return -ENOMEM; 4957 4958 wpa_printf(MSG_DEBUG, "nl80211: Remove beacon (ifindex=%d)", 4959 drv->ifindex); 4960 nl80211_cmd(drv, msg, 0, NL80211_CMD_DEL_BEACON); 4961 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 4962 4963 return send_and_recv_msgs(drv, msg, NULL, NULL); 4964 nla_put_failure: 4965 nlmsg_free(msg); 4966 return -ENOBUFS; 4967} 4968 4969 4970/** 4971 * wpa_driver_nl80211_deinit - Deinitialize nl80211 driver interface 4972 * @bss: Pointer to private nl80211 data from wpa_driver_nl80211_init() 4973 * 4974 * Shut down driver interface and processing of driver events. Free 4975 * private data buffer if one was allocated in wpa_driver_nl80211_init(). 4976 */ 4977static void wpa_driver_nl80211_deinit(struct i802_bss *bss) 4978{ 4979 struct wpa_driver_nl80211_data *drv = bss->drv; 4980 4981 bss->in_deinit = 1; 4982 if (drv->data_tx_status) 4983 eloop_unregister_read_sock(drv->eapol_tx_sock); 4984 if (drv->eapol_tx_sock >= 0) 4985 close(drv->eapol_tx_sock); 4986 4987 if (bss->nl_preq) 4988 wpa_driver_nl80211_probe_req_report(bss, 0); 4989 if (bss->added_if_into_bridge) { 4990 if (linux_br_del_if(drv->global->ioctl_sock, bss->brname, 4991 bss->ifname) < 0) 4992 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 4993 "interface %s from bridge %s: %s", 4994 bss->ifname, bss->brname, strerror(errno)); 4995 if (drv->rtnl_sk) 4996 nl80211_handle_destroy(drv->rtnl_sk); 4997 } 4998 if (bss->added_bridge) { 4999 if (linux_br_del(drv->global->ioctl_sock, bss->brname) < 0) 5000 wpa_printf(MSG_INFO, "nl80211: Failed to remove " 5001 "bridge %s: %s", 5002 bss->brname, strerror(errno)); 5003 } 5004 5005 nl80211_remove_monitor_interface(drv); 5006 5007 if (is_ap_interface(drv->nlmode)) 5008 wpa_driver_nl80211_del_beacon(drv); 5009 5010 if (drv->eapol_sock >= 0) { 5011 eloop_unregister_read_sock(drv->eapol_sock); 5012 close(drv->eapol_sock); 5013 } 5014 5015 if (drv->if_indices != drv->default_if_indices) 5016 os_free(drv->if_indices); 5017 5018 if (drv->disabled_11b_rates) 5019 nl80211_disable_11b_rates(drv, drv->ifindex, 0); 5020 5021 netlink_send_oper_ifla(drv->global->netlink, drv->ifindex, 0, 5022 IF_OPER_UP); 5023 eloop_cancel_timeout(wpa_driver_nl80211_send_rfkill, drv, drv->ctx); 5024 rfkill_deinit(drv->rfkill); 5025 5026 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 5027 5028 if (!drv->start_iface_up) 5029 (void) i802_set_iface_flags(bss, 0); 5030 5031 if (drv->addr_changed) { 5032 linux_set_iface_flags(drv->global->ioctl_sock, bss->ifname, 0); 5033 if (linux_set_ifhwaddr(drv->global->ioctl_sock, bss->ifname, 5034 drv->perm_addr) < 0) { 5035 wpa_printf(MSG_DEBUG, 5036 "nl80211: Could not restore permanent MAC address"); 5037 } 5038 } 5039 5040 if (drv->nlmode != NL80211_IFTYPE_P2P_DEVICE) { 5041 if (!drv->hostapd || !drv->start_mode_ap) 5042 wpa_driver_nl80211_set_mode(bss, 5043 NL80211_IFTYPE_STATION); 5044 nl80211_mgmt_unsubscribe(bss, "deinit"); 5045 } else { 5046 nl80211_mgmt_unsubscribe(bss, "deinit"); 5047 nl80211_del_p2pdev(bss); 5048 } 5049 nl_cb_put(drv->nl_cb); 5050 5051 nl80211_destroy_bss(drv->first_bss); 5052 5053 os_free(drv->filter_ssids); 5054 5055 os_free(drv->auth_ie); 5056 5057 if (drv->in_interface_list) 5058 dl_list_del(&drv->list); 5059 5060 os_free(drv->extended_capa); 5061 os_free(drv->extended_capa_mask); 5062 os_free(drv->first_bss); 5063 os_free(drv); 5064} 5065 5066 5067/** 5068 * wpa_driver_nl80211_scan_timeout - Scan timeout to report scan completion 5069 * @eloop_ctx: Driver private data 5070 * @timeout_ctx: ctx argument given to wpa_driver_nl80211_init() 5071 * 5072 * This function can be used as registered timeout when starting a scan to 5073 * generate a scan completed event if the driver does not report this. 5074 */ 5075static void wpa_driver_nl80211_scan_timeout(void *eloop_ctx, void *timeout_ctx) 5076{ 5077 struct wpa_driver_nl80211_data *drv = eloop_ctx; 5078 if (drv->ap_scan_as_station != NL80211_IFTYPE_UNSPECIFIED) { 5079 wpa_driver_nl80211_set_mode(drv->first_bss, 5080 drv->ap_scan_as_station); 5081 drv->ap_scan_as_station = NL80211_IFTYPE_UNSPECIFIED; 5082 } 5083 wpa_printf(MSG_DEBUG, "Scan timeout - try to get results"); 5084 wpa_supplicant_event(timeout_ctx, EVENT_SCAN_RESULTS, NULL); 5085} 5086 5087 5088static struct nl_msg * 5089nl80211_scan_common(struct wpa_driver_nl80211_data *drv, u8 cmd, 5090 struct wpa_driver_scan_params *params, u64 *wdev_id) 5091{ 5092 struct nl_msg *msg; 5093 size_t i; 5094 u32 scan_flags = 0; 5095 5096 msg = nlmsg_alloc(); 5097 if (!msg) 5098 return NULL; 5099 5100 nl80211_cmd(drv, msg, 0, cmd); 5101 5102 if (!wdev_id) 5103 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5104 else 5105 NLA_PUT_U64(msg, NL80211_ATTR_WDEV, *wdev_id); 5106 5107 if (params->num_ssids) { 5108 struct nlattr *ssids; 5109 5110 ssids = nla_nest_start(msg, NL80211_ATTR_SCAN_SSIDS); 5111 if (ssids == NULL) 5112 goto fail; 5113 for (i = 0; i < params->num_ssids; i++) { 5114 wpa_hexdump_ascii(MSG_MSGDUMP, "nl80211: Scan SSID", 5115 params->ssids[i].ssid, 5116 params->ssids[i].ssid_len); 5117 if (nla_put(msg, i + 1, params->ssids[i].ssid_len, 5118 params->ssids[i].ssid) < 0) 5119 goto fail; 5120 } 5121 nla_nest_end(msg, ssids); 5122 } 5123 5124 if (params->extra_ies) { 5125 wpa_hexdump(MSG_MSGDUMP, "nl80211: Scan extra IEs", 5126 params->extra_ies, params->extra_ies_len); 5127 if (nla_put(msg, NL80211_ATTR_IE, params->extra_ies_len, 5128 params->extra_ies) < 0) 5129 goto fail; 5130 } 5131 5132 if (params->freqs) { 5133 struct nlattr *freqs; 5134 freqs = nla_nest_start(msg, NL80211_ATTR_SCAN_FREQUENCIES); 5135 if (freqs == NULL) 5136 goto fail; 5137 for (i = 0; params->freqs[i]; i++) { 5138 wpa_printf(MSG_MSGDUMP, "nl80211: Scan frequency %u " 5139 "MHz", params->freqs[i]); 5140 if (nla_put_u32(msg, i + 1, params->freqs[i]) < 0) 5141 goto fail; 5142 } 5143 nla_nest_end(msg, freqs); 5144 } 5145 5146 os_free(drv->filter_ssids); 5147 drv->filter_ssids = params->filter_ssids; 5148 params->filter_ssids = NULL; 5149 drv->num_filter_ssids = params->num_filter_ssids; 5150 5151 if (params->only_new_results) { 5152 wpa_printf(MSG_DEBUG, "nl80211: Add NL80211_SCAN_FLAG_FLUSH"); 5153 scan_flags |= NL80211_SCAN_FLAG_FLUSH; 5154 } 5155 5156 if (params->low_priority && drv->have_low_prio_scan) { 5157 wpa_printf(MSG_DEBUG, 5158 "nl80211: Add NL80211_SCAN_FLAG_LOW_PRIORITY"); 5159 scan_flags |= NL80211_SCAN_FLAG_LOW_PRIORITY; 5160 } 5161 5162 if (scan_flags) 5163 NLA_PUT_U32(msg, NL80211_ATTR_SCAN_FLAGS, scan_flags); 5164 5165 return msg; 5166 5167fail: 5168nla_put_failure: 5169 nlmsg_free(msg); 5170 return NULL; 5171} 5172 5173 5174/** 5175 * wpa_driver_nl80211_scan - Request the driver to initiate scan 5176 * @bss: Pointer to private driver data from wpa_driver_nl80211_init() 5177 * @params: Scan parameters 5178 * Returns: 0 on success, -1 on failure 5179 */ 5180static int wpa_driver_nl80211_scan(struct i802_bss *bss, 5181 struct wpa_driver_scan_params *params) 5182{ 5183 struct wpa_driver_nl80211_data *drv = bss->drv; 5184 int ret = -1, timeout; 5185 struct nl_msg *msg = NULL; 5186 5187 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: scan request"); 5188 drv->scan_for_auth = 0; 5189 5190 msg = nl80211_scan_common(drv, NL80211_CMD_TRIGGER_SCAN, params, 5191 bss->wdev_id_set ? &bss->wdev_id : NULL); 5192 if (!msg) 5193 return -1; 5194 5195 if (params->p2p_probe) { 5196 struct nlattr *rates; 5197 5198 wpa_printf(MSG_DEBUG, "nl80211: P2P probe - mask SuppRates"); 5199 5200 rates = nla_nest_start(msg, NL80211_ATTR_SCAN_SUPP_RATES); 5201 if (rates == NULL) 5202 goto nla_put_failure; 5203 5204 /* 5205 * Remove 2.4 GHz rates 1, 2, 5.5, 11 Mbps from supported rates 5206 * by masking out everything else apart from the OFDM rates 6, 5207 * 9, 12, 18, 24, 36, 48, 54 Mbps from non-MCS rates. All 5 GHz 5208 * rates are left enabled. 5209 */ 5210 NLA_PUT(msg, NL80211_BAND_2GHZ, 8, 5211 "\x0c\x12\x18\x24\x30\x48\x60\x6c"); 5212 nla_nest_end(msg, rates); 5213 5214 NLA_PUT_FLAG(msg, NL80211_ATTR_TX_NO_CCK_RATE); 5215 } 5216 5217 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5218 msg = NULL; 5219 if (ret) { 5220 wpa_printf(MSG_DEBUG, "nl80211: Scan trigger failed: ret=%d " 5221 "(%s)", ret, strerror(-ret)); 5222 if (drv->hostapd && is_ap_interface(drv->nlmode)) { 5223 enum nl80211_iftype old_mode = drv->nlmode; 5224 5225 /* 5226 * mac80211 does not allow scan requests in AP mode, so 5227 * try to do this in station mode. 5228 */ 5229 if (wpa_driver_nl80211_set_mode( 5230 bss, NL80211_IFTYPE_STATION)) 5231 goto nla_put_failure; 5232 5233 if (wpa_driver_nl80211_scan(bss, params)) { 5234 wpa_driver_nl80211_set_mode(bss, drv->nlmode); 5235 goto nla_put_failure; 5236 } 5237 5238 /* Restore AP mode when processing scan results */ 5239 drv->ap_scan_as_station = old_mode; 5240 ret = 0; 5241 } else 5242 goto nla_put_failure; 5243 } 5244 5245 drv->scan_state = SCAN_REQUESTED; 5246 /* Not all drivers generate "scan completed" wireless event, so try to 5247 * read results after a timeout. */ 5248 timeout = 10; 5249 if (drv->scan_complete_events) { 5250 /* 5251 * The driver seems to deliver events to notify when scan is 5252 * complete, so use longer timeout to avoid race conditions 5253 * with scanning and following association request. 5254 */ 5255 timeout = 30; 5256 } 5257 wpa_printf(MSG_DEBUG, "Scan requested (ret=%d) - scan timeout %d " 5258 "seconds", ret, timeout); 5259 eloop_cancel_timeout(wpa_driver_nl80211_scan_timeout, drv, drv->ctx); 5260 eloop_register_timeout(timeout, 0, wpa_driver_nl80211_scan_timeout, 5261 drv, drv->ctx); 5262 5263nla_put_failure: 5264 nlmsg_free(msg); 5265 return ret; 5266} 5267 5268 5269/** 5270 * wpa_driver_nl80211_sched_scan - Initiate a scheduled scan 5271 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 5272 * @params: Scan parameters 5273 * @interval: Interval between scan cycles in milliseconds 5274 * Returns: 0 on success, -1 on failure or if not supported 5275 */ 5276static int wpa_driver_nl80211_sched_scan(void *priv, 5277 struct wpa_driver_scan_params *params, 5278 u32 interval) 5279{ 5280 struct i802_bss *bss = priv; 5281 struct wpa_driver_nl80211_data *drv = bss->drv; 5282 int ret = -1; 5283 struct nl_msg *msg; 5284 size_t i; 5285 5286 wpa_dbg(drv->ctx, MSG_DEBUG, "nl80211: sched_scan request"); 5287 5288#ifdef ANDROID 5289 if (!drv->capa.sched_scan_supported) 5290 return android_pno_start(bss, params); 5291#endif /* ANDROID */ 5292 5293 msg = nl80211_scan_common(drv, NL80211_CMD_START_SCHED_SCAN, params, 5294 bss->wdev_id_set ? &bss->wdev_id : NULL); 5295 if (!msg) 5296 goto nla_put_failure; 5297 5298 NLA_PUT_U32(msg, NL80211_ATTR_SCHED_SCAN_INTERVAL, interval); 5299 5300 if ((drv->num_filter_ssids && 5301 (int) drv->num_filter_ssids <= drv->capa.max_match_sets) || 5302 params->filter_rssi) { 5303 struct nlattr *match_sets; 5304 match_sets = nla_nest_start(msg, NL80211_ATTR_SCHED_SCAN_MATCH); 5305 if (match_sets == NULL) 5306 goto nla_put_failure; 5307 5308 for (i = 0; i < drv->num_filter_ssids; i++) { 5309 struct nlattr *match_set_ssid; 5310 wpa_hexdump_ascii(MSG_MSGDUMP, 5311 "nl80211: Sched scan filter SSID", 5312 drv->filter_ssids[i].ssid, 5313 drv->filter_ssids[i].ssid_len); 5314 5315 match_set_ssid = nla_nest_start(msg, i + 1); 5316 if (match_set_ssid == NULL) 5317 goto nla_put_failure; 5318 NLA_PUT(msg, NL80211_ATTR_SCHED_SCAN_MATCH_SSID, 5319 drv->filter_ssids[i].ssid_len, 5320 drv->filter_ssids[i].ssid); 5321 if (params->filter_rssi) 5322 NLA_PUT_U32(msg, 5323 NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 5324 params->filter_rssi); 5325 5326 nla_nest_end(msg, match_set_ssid); 5327 } 5328 5329 /* 5330 * Due to backward compatibility code, newer kernels treat this 5331 * matchset (with only an RSSI filter) as the default for all 5332 * other matchsets, unless it's the only one, in which case the 5333 * matchset will actually allow all SSIDs above the RSSI. 5334 */ 5335 if (params->filter_rssi) { 5336 struct nlattr *match_set_rssi; 5337 match_set_rssi = nla_nest_start(msg, 0); 5338 if (match_set_rssi == NULL) 5339 goto nla_put_failure; 5340 NLA_PUT_U32(msg, NL80211_SCHED_SCAN_MATCH_ATTR_RSSI, 5341 params->filter_rssi); 5342 wpa_printf(MSG_MSGDUMP, 5343 "nl80211: Sched scan RSSI filter %d dBm", 5344 params->filter_rssi); 5345 nla_nest_end(msg, match_set_rssi); 5346 } 5347 5348 nla_nest_end(msg, match_sets); 5349 } 5350 5351 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5352 5353 /* TODO: if we get an error here, we should fall back to normal scan */ 5354 5355 msg = NULL; 5356 if (ret) { 5357 wpa_printf(MSG_DEBUG, "nl80211: Sched scan start failed: " 5358 "ret=%d (%s)", ret, strerror(-ret)); 5359 goto nla_put_failure; 5360 } 5361 5362 wpa_printf(MSG_DEBUG, "nl80211: Sched scan requested (ret=%d) - " 5363 "scan interval %d msec", ret, interval); 5364 5365nla_put_failure: 5366 nlmsg_free(msg); 5367 return ret; 5368} 5369 5370 5371/** 5372 * wpa_driver_nl80211_stop_sched_scan - Stop a scheduled scan 5373 * @priv: Pointer to private driver data from wpa_driver_nl80211_init() 5374 * Returns: 0 on success, -1 on failure or if not supported 5375 */ 5376static int wpa_driver_nl80211_stop_sched_scan(void *priv) 5377{ 5378 struct i802_bss *bss = priv; 5379 struct wpa_driver_nl80211_data *drv = bss->drv; 5380 int ret = 0; 5381 struct nl_msg *msg; 5382 5383#ifdef ANDROID 5384 if (!drv->capa.sched_scan_supported) 5385 return android_pno_stop(bss); 5386#endif /* ANDROID */ 5387 5388 msg = nlmsg_alloc(); 5389 if (!msg) 5390 return -1; 5391 5392 nl80211_cmd(drv, msg, 0, NL80211_CMD_STOP_SCHED_SCAN); 5393 5394 NLA_PUT_U32(msg, NL80211_ATTR_IFINDEX, drv->ifindex); 5395 5396 ret = send_and_recv_msgs(drv, msg, NULL, NULL); 5397 msg = NULL; 5398 if (ret) { 5399 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop failed: " 5400 "ret=%d (%s)", ret, strerror(-ret)); 5401 goto nla_put_failure; 5402 } 5403 5404 wpa_printf(MSG_DEBUG, "nl80211: Sched scan stop sent (ret=%d)", ret); 5405 5406nla_put_failure: 5407 nlmsg_free(msg); 5408 return ret; 5409} 5410 5411 5412static const u8 * nl80211_get_ie(const u8 *ies, size_t ies_len, u8 ie) 5413{ 5414 const u8 *end, *pos; 5415 5416 if (ies == NULL) 5417 return NULL; 5418 5419 pos = ies; 5420 end = ies + ies_len; 5421 5422 while (pos + 1 < end) { 5423 if (pos + 2 + pos[1] > end) 5424 break; 5425 if (pos[0] == ie) 5426 return pos; 5427 pos += 2 + pos[1]; 5428 } 5429 5430 return NULL; 5431} 5432 5433 5434static int nl80211_scan_filtered(struct wpa_driver_nl80211_data *drv, 5435 const u8 *ie, size_t ie_len) 5436{ 5437 const u8 *ssid; 5438 size_t i; 5439 5440 if (drv->filter_ssids == NULL) 5441 return 0; 5442 5443 ssid = nl80211_get_ie(ie, ie_len, WLAN_EID_SSID); 5444 if (ssid == NULL) 5445 return 1; 5446 5447 for (i = 0; i < drv->num_filter_ssids; i++) { 5448 if (ssid[1] == drv->filter_ssids[i].ssid_len && 5449 os_memcmp(ssid + 2, drv->filter_ssids[i].ssid, ssid[1]) == 5450 0) 5451 return 0; 5452 } 5453 5454 return 1; 5455} 5456 5457 5458static int bss_info_handler(struct nl_msg *msg, void *arg) 5459{ 5460 struct nlattr *tb[NL80211_ATTR_MAX + 1]; 5461 struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg)); 5462 struct nlattr *bss[NL80211_BSS_MAX + 1]; 5463 static struct nla_policy bss_policy[NL80211_BSS_MAX + 1] = { 5464 [NL80211_BSS_BSSID] = { .type = NLA_UNSPEC }, 5465 [NL80211_BSS_FREQUENCY] = { .type = NLA_U32 }, 5466 [NL80211_BSS_TSF] = { .type = NLA_U64 }, 5467 [NL80211_BSS_BEACON_INTERVAL] = { .type = NLA_U16 }, 5468 [NL80211_BSS_CAPABILITY] = { .type = NLA_U16 }, 5469 [NL80211_BSS_INFORMATION_ELEMENTS] = { .type = NLA_UNSPEC }, 5470 [NL80211_BSS_SIGNAL_MBM] = { .type = NLA_U32 }, 5471 [NL80211_BSS_SIGNAL_UNSPEC] = { .type = NLA_U8 }, 5472 [NL80211_BSS_STATUS] = { .type = NLA_U32 }, 5473 [NL80211_BSS_SEEN_MS_AGO] = { .type = NLA_U32 }, 5474 [NL80211_BSS_BEACON_IES] = { .type = NLA_UNSPEC }, 5475 }; 5476 struct nl80211_bss_info_arg *_arg = arg; 5477 struct wpa_scan_results *res = _arg->res; 5478 struct wpa_scan_res **tmp; 5479 struct wpa_scan_res *r; 5480 const u8 *ie, *beacon_ie; 5481 size_t ie_len, beacon_ie_len; 5482 u8 *pos; 5483 size_t i; 5484 5485 nla_parse(tb, NL80211_ATTR_MAX, genlmsg_attrdata(gnlh, 0), 5486 genlmsg_attrlen(gnlh, 0), NULL); 5487 if (!tb[NL80211_ATTR_BSS]) 5488 return NL_SKIP; 5489 if (nla_parse_nested(bss, NL80211_BSS_MAX, tb[NL80211_ATTR_BSS], 5490 bss_policy)) 5491 return NL_SKIP; 5492 if (bss[NL80211_BSS_STATUS]) { 5493 enum nl80211_bss_status status; 5494 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 5495 if (status == NL80211_BSS_STATUS_ASSOCIATED && 5496 bss[NL80211_BSS_FREQUENCY]) { 5497 _arg->assoc_freq = 5498 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 5499 wpa_printf(MSG_DEBUG, "nl80211: Associated on %u MHz", 5500 _arg->assoc_freq); 5501 } 5502 if (status == NL80211_BSS_STATUS_IBSS_JOINED && 5503 bss[NL80211_BSS_FREQUENCY]) { 5504 _arg->ibss_freq = 5505 nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 5506 wpa_printf(MSG_DEBUG, "nl80211: IBSS-joined on %u MHz", 5507 _arg->ibss_freq); 5508 } 5509 if (status == NL80211_BSS_STATUS_ASSOCIATED && 5510 bss[NL80211_BSS_BSSID]) { 5511 os_memcpy(_arg->assoc_bssid, 5512 nla_data(bss[NL80211_BSS_BSSID]), ETH_ALEN); 5513 wpa_printf(MSG_DEBUG, "nl80211: Associated with " 5514 MACSTR, MAC2STR(_arg->assoc_bssid)); 5515 } 5516 } 5517 if (!res) 5518 return NL_SKIP; 5519 if (bss[NL80211_BSS_INFORMATION_ELEMENTS]) { 5520 ie = nla_data(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 5521 ie_len = nla_len(bss[NL80211_BSS_INFORMATION_ELEMENTS]); 5522 } else { 5523 ie = NULL; 5524 ie_len = 0; 5525 } 5526 if (bss[NL80211_BSS_BEACON_IES]) { 5527 beacon_ie = nla_data(bss[NL80211_BSS_BEACON_IES]); 5528 beacon_ie_len = nla_len(bss[NL80211_BSS_BEACON_IES]); 5529 } else { 5530 beacon_ie = NULL; 5531 beacon_ie_len = 0; 5532 } 5533 5534 if (nl80211_scan_filtered(_arg->drv, ie ? ie : beacon_ie, 5535 ie ? ie_len : beacon_ie_len)) 5536 return NL_SKIP; 5537 5538 r = os_zalloc(sizeof(*r) + ie_len + beacon_ie_len); 5539 if (r == NULL) 5540 return NL_SKIP; 5541 if (bss[NL80211_BSS_BSSID]) 5542 os_memcpy(r->bssid, nla_data(bss[NL80211_BSS_BSSID]), 5543 ETH_ALEN); 5544 if (bss[NL80211_BSS_FREQUENCY]) 5545 r->freq = nla_get_u32(bss[NL80211_BSS_FREQUENCY]); 5546 if (bss[NL80211_BSS_BEACON_INTERVAL]) 5547 r->beacon_int = nla_get_u16(bss[NL80211_BSS_BEACON_INTERVAL]); 5548 if (bss[NL80211_BSS_CAPABILITY]) 5549 r->caps = nla_get_u16(bss[NL80211_BSS_CAPABILITY]); 5550 r->flags |= WPA_SCAN_NOISE_INVALID; 5551 if (bss[NL80211_BSS_SIGNAL_MBM]) { 5552 r->level = nla_get_u32(bss[NL80211_BSS_SIGNAL_MBM]); 5553 r->level /= 100; /* mBm to dBm */ 5554 r->flags |= WPA_SCAN_LEVEL_DBM | WPA_SCAN_QUAL_INVALID; 5555 } else if (bss[NL80211_BSS_SIGNAL_UNSPEC]) { 5556 r->level = nla_get_u8(bss[NL80211_BSS_SIGNAL_UNSPEC]); 5557 r->flags |= WPA_SCAN_QUAL_INVALID; 5558 } else 5559 r->flags |= WPA_SCAN_LEVEL_INVALID | WPA_SCAN_QUAL_INVALID; 5560 if (bss[NL80211_BSS_TSF]) 5561 r->tsf = nla_get_u64(bss[NL80211_BSS_TSF]); 5562 if (bss[NL80211_BSS_SEEN_MS_AGO]) 5563 r->age = nla_get_u32(bss[NL80211_BSS_SEEN_MS_AGO]); 5564 r->ie_len = ie_len; 5565 pos = (u8 *) (r + 1); 5566 if (ie) { 5567 os_memcpy(pos, ie, ie_len); 5568 pos += ie_len; 5569 } 5570 r->beacon_ie_len = beacon_ie_len; 5571 if (beacon_ie) 5572 os_memcpy(pos, beacon_ie, beacon_ie_len); 5573 5574 if (bss[NL80211_BSS_STATUS]) { 5575 enum nl80211_bss_status status; 5576 status = nla_get_u32(bss[NL80211_BSS_STATUS]); 5577 switch (status) { 5578 case NL80211_BSS_STATUS_AUTHENTICATED: 5579 r->flags |= WPA_SCAN_AUTHENTICATED; 5580 break; 5581 case NL80211_BSS_STATUS_ASSOCIATED: 5582 r->flags |= WPA_SCAN_ASSOCIATED; 5583 break; 5584 default: 5585 break; 5586 } 5587 } 5588 5589 /* 5590 * cfg80211 maintains separate BSS table entries for APs if the same 5591 * BSSID,SSID pair is seen on multiple channels. wpa_supplicant does 5592 * not use frequency as a separate key in the BSS table, so filter out 5593 * duplicated entries. Prefer associated BSS entry in such a case in 5594 * order to get the correct frequency into the BSS table. Similarly, 5595 * prefer newer entries over older. 5596 */ 5597 for (i = 0; i < res->num; i++) { 5598 const u8 *s1, *s2; 5599 if (os_memcmp(res->res[i]->bssid, r->bssid, ETH_ALEN) != 0) 5600 continue; 5601 5602 s1 = nl80211_get_ie((u8 *) (res->res[i] + 1), 5603 res->res[i]->ie_len, WLAN_EID_SSID); 5604 s2 = nl80211_get_ie((u8 *) (r + 1), r->ie_len, WLAN_EID_SSID); 5605 if (s1 == NULL || s2 == NULL || s1[1] != s2[1] || 5606 os_memcmp(s1, s2, 2 + s1[1]) != 0) 5607 continue; 5608 5609 /* Same BSSID,SSID was already included in scan results */ 5610 wpa_printf(MSG_DEBUG, "nl80211: Remove duplicated scan result " 5611 "for " MACSTR, MAC2STR(r->bssid)); 5612 5613 if (((r->flags & WPA_SCAN_ASSOCIATED) && 5614 !(res->res[i]->flags & WPA_SCAN_ASSOCIATED)) || 5615 r->age < res->res[i]->age) { 5616 os_free(res->res[i]); 5617 res->res[i] = r; 5618 } else 5619 os_free(r); 5620 return NL_SKIP; 5621 } 5622 5623 tmp = os_realloc_array(res->res, res->num + 1, 5624 sizeof(struct wpa_scan_res *)); 5625 if (tmp == NULL) { 5626 os_free(r); 5627 return NL_SKIP; 5628 } 5629 tmp[res->num++] = r; 5630 res->res = tmp; 5631 5632 return NL_SKIP; 5633} 5634 5635 5636static void clear_state_mismatch(struct wpa_driver_nl80211_data *drv, 5637 const u8 *addr) 5638{ 5639 if (drv->capa.flags & WPA_DRIVER_FLAGS_SME) { 5640 wpa_printf(MSG_DEBUG, "nl80211: Clear possible state " 5641 "mismatch (" MACSTR ")", MAC2STR(addr)); 5642 wpa_driver_nl80211_mlme(drv, addr, 5643 NL80211_CMD_DEAUTHENTICATE, 5644 WLAN_REASON_PREV_AUTH_NOT_VALID, 1); 5645 } 5646} 5647 5648 5649static void wpa_driver_nl80211_check_bss_status( 5650 struct wpa_driver_nl80211_data *drv, struct wpa_scan_results *res) 5651{ 5652 size_t i; 5653 5654 for (i = 0; i < res->num; i++) { 5655 struct wpa_scan_res *r = res->res[i]; 5656 if (r->flags & WPA_SCAN_AUTHENTICATED) { 5657 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 5658 "indicates BSS status with " MACSTR 5659 " as authenticated", 5660 MAC2STR(r->bssid)); 5661 if (is_sta_interface(drv->nlmode) && 5662 os_memcmp(r->bssid, drv->bssid, ETH_ALEN) != 0 && 5663 os_memcmp(r->bssid, drv->auth_bssid, ETH_ALEN) != 5664 0) { 5665 wpa_printf(MSG_DEBUG, "nl80211: Unknown BSSID" 5666 " in local state (auth=" MACSTR 5667 " assoc=" MACSTR ")", 5668 MAC2STR(drv->auth_bssid), 5669 MAC2STR(drv->bssid)); 5670 clear_state_mismatch(drv, r->bssid); 5671 } 5672 } 5673 5674 if (r->flags & WPA_SCAN_ASSOCIATED) { 5675 wpa_printf(MSG_DEBUG, "nl80211: Scan results " 5676 "indicate BSS status with " MACSTR 5677 " as associated", 5678 MAC2STR(r->bssid)); 5679 if (is_sta_interface(drv->nlmode) && 5680 !drv->associated) { 5681 wpa_printf(MSG_DEBUG, "nl80211: Local state " 5682 "(not associated) does not match " 5683 "with BSS state"); 5684 clear_state_mismatch(drv, r->bssid); 5685 } else if (is_sta_interface(drv->nlmode) && 5686 os_memcmp(drv->bssid, r->bssid, ETH_ALEN) != 5687 0) { 5688 wpa_printf(MSG_DEBUG, "nl80211: Local state " 5689 "(associated with " MACSTR ") does " 5690 "not match with BSS state", 5691 MAC2STR(drv->bs