wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "wpa_supplicant_i.h"
  18 #include "driver_i.h"
  19 #include "pcsc_funcs.h"
  20 #include "rsn_supp/preauth.h"
  21 #include "rsn_supp/pmksa_cache.h"
  22 #include "common/wpa_ctrl.h"
  23 #include "eap_peer/eap.h"
  24 #include "ap/hostapd.h"
  25 #include "p2p/p2p.h"
  26 #include "wnm_sta.h"
  27 #include "notify.h"
  28 #include "common/ieee802_11_defs.h"
  29 #include "common/ieee802_11_common.h"
  30 #include "crypto/random.h"
  31 #include "blacklist.h"
  32 #include "wpas_glue.h"
  33 #include "wps_supplicant.h"
  34 #include "ibss_rsn.h"
  35 #include "sme.h"
  36 #include "gas_query.h"
  37 #include "p2p_supplicant.h"
  38 #include "bgscan.h"
  39 #include "autoscan.h"
  40 #include "ap.h"
  41 #include "bss.h"
  42 #include "scan.h"
  43 #include "offchannel.h"
  44 #include "interworking.h"
  45
  46
  47 #ifndef CONFIG_NO_SCAN_PROCESSING
  48 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
  49                                               int new_scan, int own_request);
  50 #endif /* CONFIG_NO_SCAN_PROCESSING */
  51
  52
  53 static int wpas_temp_disabled(struct wpa_supplicant *wpa_s,
  54                               struct wpa_ssid *ssid)
  55 {
  56         struct os_reltime now;
  57
  58         if (ssid == NULL || ssid->disabled_until.sec == 0)
  59                 return 0;
  60
  61         os_get_reltime(&now);
  62         if (ssid->disabled_until.sec > now.sec)
  63                 return ssid->disabled_until.sec - now.sec;
  64
  65         wpas_clear_temp_disabled(wpa_s, ssid, 0);
  66
  67         return 0;
  68 }
  69
  70
  71 static struct wpa_bss * wpa_supplicant_get_new_bss(
  72         struct wpa_supplicant *wpa_s, const u8 *bssid)
  73 {
  74         struct wpa_bss *bss = NULL;
  75         struct wpa_ssid *ssid = wpa_s->current_ssid;
  76
  77         if (ssid->ssid_len > 0)
  78                 bss = wpa_bss_get(wpa_s, bssid, ssid->ssid, ssid->ssid_len);
  79         if (!bss)
  80                 bss = wpa_bss_get_bssid(wpa_s, bssid);
  81
  82         return bss;
  83 }
  84
  85
  86 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  87 {
  88         struct wpa_ssid *ssid, *old_ssid;
  89         struct wpa_bss *bss;
  90         int res;
  91
  92         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  93                 return 0;
  94
  95         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  96                 "information");
  97         ssid = wpa_supplicant_get_ssid(wpa_s);
  98         if (ssid == NULL) {
  99                 wpa_msg(wpa_s, MSG_INFO,
 100                         "No network configuration found for the current AP");
 101                 return -1;
 102         }
 103
 104         if (wpas_network_disabled(wpa_s, ssid)) {
 105                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
 106                 return -1;
 107         }
 108
 109         if (disallowed_bssid(wpa_s, wpa_s->bssid) ||
 110             disallowed_ssid(wpa_s, ssid->ssid, ssid->ssid_len)) {
 111                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS is disallowed");
 112                 return -1;
 113         }
 114
 115         res = wpas_temp_disabled(wpa_s, ssid);
 116         if (res > 0) {
 117                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is temporarily "
 118                         "disabled for %d second(s)", res);
 119                 return -1;
 120         }
 121
 122         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
 123                 "current AP");
 124         if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 125                 u8 wpa_ie[80];
 126                 size_t wpa_ie_len = sizeof(wpa_ie);
 127                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 128                                               wpa_ie, &wpa_ie_len) < 0)
 129                         wpa_dbg(wpa_s, MSG_DEBUG, "Could not set WPA suites");
 130         } else {
 131                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 132         }
 133
 134         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
 135                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
 136         old_ssid = wpa_s->current_ssid;
 137         wpa_s->current_ssid = ssid;
 138
 139         bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 140         if (!bss) {
 141                 wpa_supplicant_update_scan_results(wpa_s);
 142
 143                 /* Get the BSS from the new scan results */
 144                 bss = wpa_supplicant_get_new_bss(wpa_s, wpa_s->bssid);
 145         }
 146
 147         if (bss)
 148                 wpa_s->current_bss = bss;
 149
 150         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 151         wpa_supplicant_initiate_eapol(wpa_s);
 152         if (old_ssid != wpa_s->current_ssid)
 153                 wpas_notify_network_changed(wpa_s);
 154
 155         return 0;
 156 }
 157
 158
 159 void wpa_supplicant_stop_countermeasures(void *eloop_ctx, void *sock_ctx)
 160 {
 161         struct wpa_supplicant *wpa_s = eloop_ctx;
 162
 163         if (wpa_s->countermeasures) {
 164                 wpa_s->countermeasures = 0;
 165                 wpa_drv_set_countermeasures(wpa_s, 0);
 166                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 167                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 168         }
 169 }
 170
 171
 172 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 173 {
 174         int bssid_changed;
 175
 176         wnm_bss_keep_alive_deinit(wpa_s);
 177
 178 #ifdef CONFIG_IBSS_RSN
 179         ibss_rsn_deinit(wpa_s->ibss_rsn);
 180         wpa_s->ibss_rsn = NULL;
 181 #endif /* CONFIG_IBSS_RSN */
 182
 183 #ifdef CONFIG_AP
 184         wpa_supplicant_ap_deinit(wpa_s);
 185 #endif /* CONFIG_AP */
 186
 187         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 188                 return;
 189
 190         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 191         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 192         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 193         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 194 #ifdef CONFIG_SME
 195         wpa_s->sme.prev_bssid_set = 0;
 196 #endif /* CONFIG_SME */
 197 #ifdef CONFIG_P2P
 198         os_memset(wpa_s->go_dev_addr, 0, ETH_ALEN);
 199 #endif /* CONFIG_P2P */
 200         wpa_s->current_bss = NULL;
 201         wpa_s->assoc_freq = 0;
 202 #ifdef CONFIG_IEEE80211R
 203 #ifdef CONFIG_SME
 204         if (wpa_s->sme.ft_ies)
 205                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
 206 #endif /* CONFIG_SME */
 207 #endif /* CONFIG_IEEE80211R */
 208
 209         if (bssid_changed)
 210                 wpas_notify_bssid_changed(wpa_s);
 211
 212         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 213         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 214         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 215                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 216         wpa_s->ap_ies_from_associnfo = 0;
 217         wpa_s->current_ssid = NULL;
 218         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 219         wpa_s->key_mgmt = 0;
 220 }
 221
 222
 223 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 224 {
 225         struct wpa_ie_data ie;
 226         int pmksa_set = -1;
 227         size_t i;
 228
 229         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 230             ie.pmkid == NULL)
 231                 return;
 232
 233         for (i = 0; i < ie.num_pmkid; i++) {
 234                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 235                                                     ie.pmkid + i * PMKID_LEN,
 236                                                     NULL, NULL, 0);
 237                 if (pmksa_set == 0) {
 238                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 239                         break;
 240                 }
 241         }
 242
 243         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 244                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 245 }
 246
 247
 248 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 249                                                  union wpa_event_data *data)
 250 {
 251         if (data == NULL) {
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 253                         "event");
 254                 return;
 255         }
 256         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 257                 " index=%d preauth=%d",
 258                 MAC2STR(data->pmkid_candidate.bssid),
 259                 data->pmkid_candidate.index,
 260                 data->pmkid_candidate.preauth);
 261
 262         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 263                             data->pmkid_candidate.index,
 264                             data->pmkid_candidate.preauth);
 265 }
 266
 267
 268 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 269 {
 270         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 271             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 272                 return 0;
 273
 274 #ifdef IEEE8021X_EAPOL
 275         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 276             wpa_s->current_ssid &&
 277             !(wpa_s->current_ssid->eapol_flags &
 278               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 279                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 280                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 281                  * plaintext or static WEP keys). */
 282                 return 0;
 283         }
 284 #endif /* IEEE8021X_EAPOL */
 285
 286         return 1;
 287 }
 288
 289
 290 /**
 291  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 292  * @wpa_s: pointer to wpa_supplicant data
 293  * @ssid: Configuration data for the network
 294  * Returns: 0 on success, -1 on failure
 295  *
 296  * This function is called when starting authentication with a network that is
 297  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 298  */
 299 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 300                               struct wpa_ssid *ssid)
 301 {
 302 #ifdef IEEE8021X_EAPOL
 303 #ifdef PCSC_FUNCS
 304         int aka = 0, sim = 0;
 305
 306         if ((ssid != NULL && ssid->eap.pcsc == NULL) ||
 307             wpa_s->scard != NULL || wpa_s->conf->external_sim)
 308                 return 0;
 309
 310         if (ssid == NULL || ssid->eap.eap_methods == NULL) {
 311                 sim = 1;
 312                 aka = 1;
 313         } else {
 314                 struct eap_method_type *eap = ssid->eap.eap_methods;
 315                 while (eap->vendor != EAP_VENDOR_IETF ||
 316                        eap->method != EAP_TYPE_NONE) {
 317                         if (eap->vendor == EAP_VENDOR_IETF) {
 318                                 if (eap->method == EAP_TYPE_SIM)
 319                                         sim = 1;
 320                                 else if (eap->method == EAP_TYPE_AKA ||
 321                                          eap->method == EAP_TYPE_AKA_PRIME)
 322                                         aka = 1;
 323                         }
 324                         eap++;
 325                 }
 326         }
 327
 328         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 329                 sim = 0;
 330         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL &&
 331             eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA_PRIME) ==
 332             NULL)
 333                 aka = 0;
 334
 335         if (!sim && !aka) {
 336                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 337                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 338                         "enabled");
 339                 return 0;
 340         }
 341
 342         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 343                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 344
 345         wpa_s->scard = scard_init(NULL);
 346         if (wpa_s->scard == NULL) {
 347                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 348                         "(pcsc-lite)");
 349                 return -1;
 350         }
 351         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 352         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 353 #endif /* PCSC_FUNCS */
 354 #endif /* IEEE8021X_EAPOL */
 355
 356         return 0;
 357 }
 358
 359
 360 #ifndef CONFIG_NO_SCAN_PROCESSING
 361
 362 static int has_wep_key(struct wpa_ssid *ssid)
 363 {
 364         int i;
 365
 366         for (i = 0; i < NUM_WEP_KEYS; i++) {
 367                 if (ssid->wep_key_len[i])
 368                         return 1;
 369         }
 370
 371         return 0;
 372 }
 373
 374
 375 static int wpa_supplicant_match_privacy(struct wpa_bss *bss,
 376                                         struct wpa_ssid *ssid)
 377 {
 378         int privacy = 0;
 379
 380         if (ssid->mixed_cell)
 381                 return 1;
 382
 383 #ifdef CONFIG_WPS
 384         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 385                 return 1;
 386 #endif /* CONFIG_WPS */
 387
 388         if (has_wep_key(ssid))
 389                 privacy = 1;
 390
 391 #ifdef IEEE8021X_EAPOL
 392         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 393             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 394                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 395                 privacy = 1;
 396 #endif /* IEEE8021X_EAPOL */
 397
 398         if (wpa_key_mgmt_wpa(ssid->key_mgmt))
 399                 privacy = 1;
 400
 401         if (ssid->key_mgmt & WPA_KEY_MGMT_OSEN)
 402                 privacy = 1;
 403
 404         if (bss->caps & IEEE80211_CAP_PRIVACY)
 405                 return privacy;
 406         return !privacy;
 407 }
 408
 409
 410 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 411                                          struct wpa_ssid *ssid,
 412                                          struct wpa_bss *bss)
 413 {
 414         struct wpa_ie_data ie;
 415         int proto_match = 0;
 416         const u8 *rsn_ie, *wpa_ie;
 417         int ret;
 418         int wep_ok;
 419
 420         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 421         if (ret >= 0)
 422                 return ret;
 423
 424         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 425         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 426                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 427                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 428                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 429
 430         rsn_ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 431         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 432                 proto_match++;
 433
 434                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 435                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 436                                 "failed");
 437                         break;
 438                 }
 439
 440                 if (wep_ok &&
 441                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 442                 {
 443                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 444                                 "in RSN IE");
 445                         return 1;
 446                 }
 447
 448                 if (!(ie.proto & ssid->proto)) {
 449                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 450                                 "mismatch");
 451                         break;
 452                 }
 453
 454                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 455                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 456                                 "cipher mismatch");
 457                         break;
 458                 }
 459
 460                 if (!(ie.group_cipher & ssid->group_cipher)) {
 461                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 462                                 "cipher mismatch");
 463                         break;
 464                 }
 465
 466                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 467                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 468                                 "mismatch");
 469                         break;
 470                 }
 471
 472 #ifdef CONFIG_IEEE80211W
 473                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 474                     (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 475                      wpa_s->conf->pmf : ssid->ieee80211w) ==
 476                     MGMT_FRAME_PROTECTION_REQUIRED) {
 477                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 478                                 "frame protection");
 479                         break;
 480                 }
 481 #endif /* CONFIG_IEEE80211W */
 482
 483                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 484                 return 1;
 485         }
 486
 487         wpa_ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 488         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 489                 proto_match++;
 490
 491                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 492                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 493                                 "failed");
 494                         break;
 495                 }
 496
 497                 if (wep_ok &&
 498                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 499                 {
 500                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 501                                 "in WPA IE");
 502                         return 1;
 503                 }
 504
 505                 if (!(ie.proto & ssid->proto)) {
 506                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 507                                 "mismatch");
 508                         break;
 509                 }
 510
 511                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 512                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 513                                 "cipher mismatch");
 514                         break;
 515                 }
 516
 517                 if (!(ie.group_cipher & ssid->group_cipher)) {
 518                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 519                                 "cipher mismatch");
 520                         break;
 521                 }
 522
 523                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 524                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 525                                 "mismatch");
 526                         break;
 527                 }
 528
 529                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 530                 return 1;
 531         }
 532
 533         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && !wpa_ie &&
 534             !rsn_ie) {
 535                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow for non-WPA IEEE 802.1X");
 536                 return 1;
 537         }
 538
 539         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 540             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 541                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 542                 return 0;
 543         }
 544
 545         if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) &&
 546             wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE)) {
 547                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in OSEN");
 548                 return 1;
 549         }
 550
 551         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 552                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 553                 return 1;
 554         }
 555
 556         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 557                 "WPA/WPA2");
 558
 559         return 0;
 560 }
 561
 562
 563 static int freq_allowed(int *freqs, int freq)
 564 {
 565         int i;
 566
 567         if (freqs == NULL)
 568                 return 1;
 569
 570         for (i = 0; freqs[i]; i++)
 571                 if (freqs[i] == freq)
 572                         return 1;
 573         return 0;
 574 }
 575
 576
 577 static int ht_supported(const struct hostapd_hw_modes *mode)
 578 {
 579         if (!(mode->flags & HOSTAPD_MODE_FLAG_HT_INFO_KNOWN)) {
 580                 /*
 581                  * The driver did not indicate whether it supports HT. Assume
 582                  * it does to avoid connection issues.
 583                  */
 584                 return 1;
 585         }
 586
 587         /*
 588          * IEEE Std 802.11n-2009 20.1.1:
 589          * An HT non-AP STA shall support all EQM rates for one spatial stream.
 590          */
 591         return mode->mcs_set[0] == 0xff;
 592 }
 593
 594
 595 static int vht_supported(const struct hostapd_hw_modes *mode)
 596 {
 597         if (!(mode->flags & HOSTAPD_MODE_FLAG_VHT_INFO_KNOWN)) {
 598                 /*
 599                  * The driver did not indicate whether it supports VHT. Assume
 600                  * it does to avoid connection issues.
 601                  */
 602                 return 1;
 603         }
 604
 605         /*
 606          * A VHT non-AP STA shall support MCS 0-7 for one spatial stream.
 607          * TODO: Verify if this complies with the standard
 608          */
 609         return (mode->vht_mcs_set[0] & 0x3) != 3;
 610 }
 611
 612
 613 static int rate_match(struct wpa_supplicant *wpa_s, struct wpa_bss *bss)
 614 {
 615         const struct hostapd_hw_modes *mode = NULL, *modes;
 616         const u8 scan_ie[2] = { WLAN_EID_SUPP_RATES, WLAN_EID_EXT_SUPP_RATES };
 617         const u8 *rate_ie;
 618         int i, j, k;
 619
 620         if (bss->freq == 0)
 621                 return 1; /* Cannot do matching without knowing band */
 622
 623         modes = wpa_s->hw.modes;
 624         if (modes == NULL) {
 625                 /*
 626                  * The driver does not provide any additional information
 627                  * about the utilized hardware, so allow the connection attempt
 628                  * to continue.
 629                  */
 630                 return 1;
 631         }
 632
 633         for (i = 0; i < wpa_s->hw.num_modes; i++) {
 634                 for (j = 0; j < modes[i].num_channels; j++) {
 635                         int freq = modes[i].channels[j].freq;
 636                         if (freq == bss->freq) {
 637                                 if (mode &&
 638                                     mode->mode == HOSTAPD_MODE_IEEE80211G)
 639                                         break; /* do not allow 802.11b replace
 640                                                 * 802.11g */
 641                                 mode = &modes[i];
 642                                 break;
 643                         }
 644                 }
 645         }
 646
 647         if (mode == NULL)
 648                 return 0;
 649
 650         for (i = 0; i < (int) sizeof(scan_ie); i++) {
 651                 rate_ie = wpa_bss_get_ie(bss, scan_ie[i]);
 652                 if (rate_ie == NULL)
 653                         continue;
 654
 655                 for (j = 2; j < rate_ie[1] + 2; j++) {
 656                         int flagged = !!(rate_ie[j] & 0x80);
 657                         int r = (rate_ie[j] & 0x7f) * 5;
 658
 659                         /*
 660                          * IEEE Std 802.11n-2009 7.3.2.2:
 661                          * The new BSS Membership selector value is encoded
 662                          * like a legacy basic rate, but it is not a rate and
 663                          * only indicates if the BSS members are required to
 664                          * support the mandatory features of Clause 20 [HT PHY]
 665                          * in order to join the BSS.
 666                          */
 667                         if (flagged && ((rate_ie[j] & 0x7f) ==
 668                                         BSS_MEMBERSHIP_SELECTOR_HT_PHY)) {
 669                                 if (!ht_supported(mode)) {
 670                                         wpa_dbg(wpa_s, MSG_DEBUG,
 671                                                 "   hardware does not support "
 672                                                 "HT PHY");
 673                                         return 0;
 674                                 }
 675                                 continue;
 676                         }
 677
 678                         /* There's also a VHT selector for 802.11ac */
 679                         if (flagged && ((rate_ie[j] & 0x7f) ==
 680                                         BSS_MEMBERSHIP_SELECTOR_VHT_PHY)) {
 681                                 if (!vht_supported(mode)) {
 682                                         wpa_dbg(wpa_s, MSG_DEBUG,
 683                                                 "   hardware does not support "
 684                                                 "VHT PHY");
 685                                         return 0;
 686                                 }
 687                                 continue;
 688                         }
 689
 690                         if (!flagged)
 691                                 continue;
 692
 693                         /* check for legacy basic rates */
 694                         for (k = 0; k < mode->num_rates; k++) {
 695                                 if (mode->rates[k] == r)
 696                                         break;
 697                         }
 698                         if (k == mode->num_rates) {
 699                                 /*
 700                                  * IEEE Std 802.11-2007 7.3.2.2 demands that in
 701                                  * order to join a BSS all required rates
 702                                  * have to be supported by the hardware.
 703                                  */
 704                                 wpa_dbg(wpa_s, MSG_DEBUG, "   hardware does "
 705                                         "not support required rate %d.%d Mbps",
 706                                         r / 10, r % 10);
 707                                 return 0;
 708                         }
 709                 }
 710         }
 711
 712         return 1;
 713 }
 714
 715
 716 static int bss_is_dmg(struct wpa_bss *bss)
 717 {
 718         return bss->freq > 45000;
 719 }
 720
 721
 722 /*
 723  * Test whether BSS is in an ESS.
 724  * This is done differently in DMG (60 GHz) and non-DMG bands
 725  */
 726 static int bss_is_ess(struct wpa_bss *bss)
 727 {
 728         if (bss_is_dmg(bss)) {
 729                 return (bss->caps & IEEE80211_CAP_DMG_MASK) ==
 730                         IEEE80211_CAP_DMG_AP;
 731         }
 732
 733         return ((bss->caps & (IEEE80211_CAP_ESS | IEEE80211_CAP_IBSS)) ==
 734                 IEEE80211_CAP_ESS);
 735 }
 736
 737
 738 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 739                                             int i, struct wpa_bss *bss,
 740                                             struct wpa_ssid *group,
 741                                             int only_first_ssid)
 742 {
 743         u8 wpa_ie_len, rsn_ie_len;
 744         int wpa;
 745         struct wpa_blacklist *e;
 746         const u8 *ie;
 747         struct wpa_ssid *ssid;
 748         int osen;
 749
 750         ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 751         wpa_ie_len = ie ? ie[1] : 0;
 752
 753         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 754         rsn_ie_len = ie ? ie[1] : 0;
 755
 756         ie = wpa_bss_get_vendor_ie(bss, OSEN_IE_VENDOR_TYPE);
 757         osen = ie != NULL;
 758
 759         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 760                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s%s%s",
 761                 i, MAC2STR(bss->bssid), wpa_ssid_txt(bss->ssid, bss->ssid_len),
 762                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 763                 wpa_bss_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "",
 764                 (wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) ||
 765                  wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) ?
 766                 " p2p" : "",
 767                 osen ? " osen=1" : "");
 768
 769         e = wpa_blacklist_get(wpa_s, bss->bssid);
 770         if (e) {
 771                 int limit = 1;
 772                 if (wpa_supplicant_enabled_networks(wpa_s) == 1) {
 773                         /*
 774                          * When only a single network is enabled, we can
 775                          * trigger blacklisting on the first failure. This
 776                          * should not be done with multiple enabled networks to
 777                          * avoid getting forced to move into a worse ESS on
 778                          * single error if there are no other BSSes of the
 779                          * current ESS.
 780                          */
 781                         limit = 0;
 782                 }
 783                 if (e->count > limit) {
 784                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 785                                 "(count=%d limit=%d)", e->count, limit);
 786                         return NULL;
 787                 }
 788         }
 789
 790         if (bss->ssid_len == 0) {
 791                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 792                 return NULL;
 793         }
 794
 795         if (disallowed_bssid(wpa_s, bss->bssid)) {
 796                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID disallowed");
 797                 return NULL;
 798         }
 799
 800         if (disallowed_ssid(wpa_s, bss->ssid, bss->ssid_len)) {
 801                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID disallowed");
 802                 return NULL;
 803         }
 804
 805         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 806
 807         for (ssid = group; ssid; ssid = only_first_ssid ? NULL : ssid->pnext) {
 808                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 809                 int res;
 810
 811                 if (wpas_network_disabled(wpa_s, ssid)) {
 812                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 813                         continue;
 814                 }
 815
 816                 res = wpas_temp_disabled(wpa_s, ssid);
 817                 if (res > 0) {
 818                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled "
 819                                 "temporarily for %d second(s)", res);
 820                         continue;
 821                 }
 822
 823 #ifdef CONFIG_WPS
 824                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 825                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 826                                 "(WPS)");
 827                         continue;
 828                 }
 829
 830                 if (wpa && ssid->ssid_len == 0 &&
 831                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 832                         check_ssid = 0;
 833
 834                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 835                         /* Only allow wildcard SSID match if an AP
 836                          * advertises active WPS operation that matches
 837                          * with our mode. */
 838                         check_ssid = 1;
 839                         if (ssid->ssid_len == 0 &&
 840                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 841                                 check_ssid = 0;
 842                 }
 843 #endif /* CONFIG_WPS */
 844
 845                 if (ssid->bssid_set && ssid->ssid_len == 0 &&
 846                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) == 0)
 847                         check_ssid = 0;
 848
 849                 if (check_ssid &&
 850                     (bss->ssid_len != ssid->ssid_len ||
 851                      os_memcmp(bss->ssid, ssid->ssid, bss->ssid_len) != 0)) {
 852                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 853                         continue;
 854                 }
 855
 856                 if (ssid->bssid_set &&
 857                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 858                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 859                         continue;
 860                 }
 861
 862                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 863                         continue;
 864
 865                 if (!osen && !wpa &&
 866                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 867                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 868                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 869                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 870                                 "not allowed");
 871                         continue;
 872                 }
 873
 874                 if (wpa && !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 875                     has_wep_key(ssid)) {
 876                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - ignore WPA/WPA2 AP for WEP network block");
 877                         continue;
 878                 }
 879
 880                 if ((ssid->key_mgmt & WPA_KEY_MGMT_OSEN) && !osen) {
 881                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-OSEN network "
 882                                 "not allowed");
 883                         continue;
 884                 }
 885
 886                 if (!wpa_supplicant_match_privacy(bss, ssid)) {
 887                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 888                                 "mismatch");
 889                         continue;
 890                 }
 891
 892                 if (!bss_is_ess(bss)) {
 893                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - not ESS network");
 894                         continue;
 895                 }
 896
 897                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 898                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 899                                 "allowed");
 900                         continue;
 901                 }
 902
 903                 if (!rate_match(wpa_s, bss)) {
 904                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - rate sets do "
 905                                 "not match");
 906                         continue;
 907                 }
 908
 909 #ifdef CONFIG_P2P
 910                 if (ssid->p2p_group &&
 911                     !wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 912                     !wpa_bss_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 913                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P IE seen");
 914                         continue;
 915                 }
 916
 917                 if (!is_zero_ether_addr(ssid->go_p2p_dev_addr)) {
 918                         struct wpabuf *p2p_ie;
 919                         u8 dev_addr[ETH_ALEN];
 920
 921                         ie = wpa_bss_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE);
 922                         if (ie == NULL) {
 923                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no P2P element");
 924                                 continue;
 925                         }
 926                         p2p_ie = wpa_bss_get_vendor_ie_multi(
 927                                 bss, P2P_IE_VENDOR_TYPE);
 928                         if (p2p_ie == NULL) {
 929                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - could not fetch P2P element");
 930                                 continue;
 931                         }
 932
 933                         if (p2p_parse_dev_addr_in_p2p_ie(p2p_ie, dev_addr) < 0
 934                             || os_memcmp(dev_addr, ssid->go_p2p_dev_addr,
 935                                          ETH_ALEN) != 0) {
 936                                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no matching GO P2P Device Address in P2P element");
 937                                 wpabuf_free(p2p_ie);
 938                                 continue;
 939                         }
 940                         wpabuf_free(p2p_ie);
 941                 }
 942
 943                 /*
 944                  * TODO: skip the AP if its P2P IE has Group Formation
 945                  * bit set in the P2P Group Capability Bitmap and we
 946                  * are not in Group Formation with that device.
 947                  */
 948 #endif /* CONFIG_P2P */
 949
 950                 /* Matching configuration found */
 951                 return ssid;
 952         }
 953
 954         /* No matching configuration found */
 955         return NULL;
 956 }
 957
 958
 959 static struct wpa_bss *
 960 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 961                           struct wpa_ssid *group,
 962                           struct wpa_ssid **selected_ssid,
 963                           int only_first_ssid)
 964 {
 965         unsigned int i;
 966
 967         if (only_first_ssid)
 968                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to find BSS matching pre-selected network id=%d",
 969                         group->id);
 970         else
 971                 wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 972                         group->priority);
 973
 974         for (i = 0; i < wpa_s->last_scan_res_used; i++) {
 975                 struct wpa_bss *bss = wpa_s->last_scan_res[i];
 976                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group,
 977                                                     only_first_ssid);
 978                 if (!*selected_ssid)
 979                         continue;
 980                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 981                         " ssid='%s'",
 982                         MAC2STR(bss->bssid),
 983                         wpa_ssid_txt(bss->ssid, bss->ssid_len));
 984                 return bss;
 985         }
 986
 987         return NULL;
 988 }
 989
 990
 991 struct wpa_bss * wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 992                                              struct wpa_ssid **selected_ssid)
 993 {
 994         struct wpa_bss *selected = NULL;
 995         int prio;
 996         struct wpa_ssid *next_ssid = NULL;
 997
 998         if (wpa_s->last_scan_res == NULL ||
 999             wpa_s->last_scan_res_used == 0)
1000                 return NULL; /* no scan results from last update */
1001
1002         if (wpa_s->next_ssid) {
1003                 struct wpa_ssid *ssid;
1004
1005                 /* check that next_ssid is still valid */
1006                 for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
1007                         if (ssid == wpa_s->next_ssid)
1008                                 break;
1009                 }
1010                 next_ssid = ssid;
1011                 wpa_s->next_ssid = NULL;
1012         }
1013
1014         while (selected == NULL) {
1015                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1016                         if (next_ssid && next_ssid->priority ==
1017                             wpa_s->conf->pssid[prio]->priority) {
1018                                 selected = wpa_supplicant_select_bss(
1019                                         wpa_s, next_ssid, selected_ssid, 1);
1020                                 if (selected)
1021                                         break;
1022                         }
1023                         selected = wpa_supplicant_select_bss(
1024                                 wpa_s, wpa_s->conf->pssid[prio],
1025                                 selected_ssid, 0);
1026                         if (selected)
1027                                 break;
1028                 }
1029
1030                 if (selected == NULL && wpa_s->blacklist &&
1031                     !wpa_s->countermeasures) {
1032                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
1033                                 "blacklist and try again");
1034                         wpa_blacklist_clear(wpa_s);
1035                         wpa_s->blacklist_cleared++;
1036                 } else if (selected == NULL)
1037                         break;
1038         }
1039
1040         return selected;
1041 }
1042
1043
1044 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
1045                                         int timeout_sec, int timeout_usec)
1046 {
1047         if (!wpa_supplicant_enabled_networks(wpa_s)) {
1048                 /*
1049                  * No networks are enabled; short-circuit request so
1050                  * we don't wait timeout seconds before transitioning
1051                  * to INACTIVE state.
1052                  */
1053                 wpa_dbg(wpa_s, MSG_DEBUG, "Short-circuit new scan request "
1054                         "since there are no enabled networks");
1055                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
1056                 return;
1057         }
1058
1059         wpa_s->scan_for_connection = 1;
1060         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
1061 }
1062
1063
1064 int wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
1065                            struct wpa_bss *selected,
1066                            struct wpa_ssid *ssid)
1067 {
1068         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
1069                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
1070                         "PBC session overlap");
1071 #ifdef CONFIG_P2P
1072                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
1073                     wpa_s->p2p_in_provisioning) {
1074                         eloop_register_timeout(0, 0, wpas_p2p_pbc_overlap_cb,
1075                                                wpa_s, NULL);
1076                         return -1;
1077                 }
1078 #endif /* CONFIG_P2P */
1079
1080 #ifdef CONFIG_WPS
1081                 wpas_wps_cancel(wpa_s);
1082 #endif /* CONFIG_WPS */
1083                 return -1;
1084         }
1085
1086         wpa_msg(wpa_s, MSG_DEBUG,
1087                 "Considering connect request: reassociate: %d  selected: "
1088                 MACSTR "  bssid: " MACSTR "  pending: " MACSTR
1089                 "  wpa_state: %s  ssid=%p  current_ssid=%p",
1090                 wpa_s->reassociate, MAC2STR(selected->bssid),
1091                 MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
1092                 wpa_supplicant_state_txt(wpa_s->wpa_state),
1093                 ssid, wpa_s->current_ssid);
1094
1095         /*
1096          * Do not trigger new association unless the BSSID has changed or if
1097          * reassociation is requested. If we are in process of associating with
1098          * the selected BSSID, do not trigger new attempt.
1099          */
1100         if (wpa_s->reassociate ||
1101             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
1102              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
1103                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
1104               (!is_zero_ether_addr(wpa_s->pending_bssid) &&
1105                os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
1106                0) ||
1107               (is_zero_ether_addr(wpa_s->pending_bssid) &&
1108                ssid != wpa_s->current_ssid)))) {
1109                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
1110                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
1111                         return 0;
1112                 }
1113                 wpa_msg(wpa_s, MSG_DEBUG, "Request association with " MACSTR,
1114                         MAC2STR(selected->bssid));
1115                 wpa_supplicant_associate(wpa_s, selected, ssid);
1116         } else {
1117                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated or trying to "
1118                         "connect with the selected AP");
1119         }
1120
1121         return 0;
1122 }
1123
1124
1125 static struct wpa_ssid *
1126 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
1127 {
1128         int prio;
1129         struct wpa_ssid *ssid;
1130
1131         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
1132                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
1133                 {
1134                         if (wpas_network_disabled(wpa_s, ssid))
1135                                 continue;
1136                         if (ssid->mode == IEEE80211_MODE_IBSS ||
1137                             ssid->mode == IEEE80211_MODE_AP)
1138                                 return ssid;
1139                 }
1140         }
1141         return NULL;
1142 }
1143
1144
1145 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
1146  * on BSS added and BSS changed events */
1147 static void wpa_supplicant_rsn_preauth_scan_results(
1148         struct wpa_supplicant *wpa_s)
1149 {
1150         struct wpa_bss *bss;
1151
1152         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
1153                 return;
1154
1155         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1156                 const u8 *ssid, *rsn;
1157
1158                 ssid = wpa_bss_get_ie(bss, WLAN_EID_SSID);
1159                 if (ssid == NULL)
1160                         continue;
1161
1162                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
1163                 if (rsn == NULL)
1164                         continue;
1165
1166                 rsn_preauth_scan_result(wpa_s->wpa, bss->bssid, ssid, rsn);
1167         }
1168
1169 }
1170
1171
1172 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
1173                                        struct wpa_bss *selected,
1174                                        struct wpa_ssid *ssid)
1175 {
1176         struct wpa_bss *current_bss = NULL;
1177         int min_diff;
1178
1179         if (wpa_s->reassociate)
1180                 return 1; /* explicit request to reassociate */
1181         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1182                 return 1; /* we are not associated; continue */
1183         if (wpa_s->current_ssid == NULL)
1184                 return 1; /* unknown current SSID */
1185         if (wpa_s->current_ssid != ssid)
1186                 return 1; /* different network block */
1187
1188         if (wpas_driver_bss_selection(wpa_s))
1189                 return 0; /* Driver-based roaming */
1190
1191         if (wpa_s->current_ssid->ssid)
1192                 current_bss = wpa_bss_get(wpa_s, wpa_s->bssid,
1193                                           wpa_s->current_ssid->ssid,
1194                                           wpa_s->current_ssid->ssid_len);
1195         if (!current_bss)
1196                 current_bss = wpa_bss_get_bssid(wpa_s, wpa_s->bssid);
1197
1198         if (!current_bss)
1199                 return 1; /* current BSS not seen in scan results */
1200
1201         if (current_bss == selected)
1202                 return 0;
1203
1204         if (selected->last_update_idx > current_bss->last_update_idx)
1205                 return 1; /* current BSS not seen in the last scan */
1206
1207 #ifndef CONFIG_NO_ROAMING
1208         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
1209         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
1210                 MAC2STR(current_bss->bssid), current_bss->level);
1211         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
1212                 MAC2STR(selected->bssid), selected->level);
1213
1214         if (wpa_s->current_ssid->bssid_set &&
1215             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
1216             0) {
1217                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
1218                         "has preferred BSSID");
1219                 return 1;
1220         }
1221
1222         if (current_bss->level < 0 && current_bss->level > selected->level) {
1223                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - Current BSS has better "
1224                         "signal level");
1225                 return 0;
1226         }
1227
1228         min_diff = 2;
1229         if (current_bss->level < 0) {
1230                 if (current_bss->level < -85)
1231                         min_diff = 1;
1232                 else if (current_bss->level < -80)
1233                         min_diff = 2;
1234                 else if (current_bss->level < -75)
1235                         min_diff = 3;
1236                 else if (current_bss->level < -70)
1237                         min_diff = 4;
1238                 else
1239                         min_diff = 5;
1240         }
1241         if (abs(current_bss->level - selected->level) < min_diff) {
1242                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
1243                         "in signal level");
1244                 return 0;
1245         }
1246
1247         return 1;
1248 #else /* CONFIG_NO_ROAMING */
1249         return 0;
1250 #endif /* CONFIG_NO_ROAMING */
1251 }
1252
1253
1254 /* Return != 0 if no scan results could be fetched or if scan results should not
1255  * be shared with other virtual interfaces. */
1256 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1257                                               union wpa_event_data *data,
1258                                               int own_request)
1259 {
1260         struct wpa_scan_results *scan_res = NULL;
1261         int ret = 0;
1262         int ap = 0;
1263 #ifndef CONFIG_NO_RANDOM_POOL
1264         size_t i, num;
1265 #endif /* CONFIG_NO_RANDOM_POOL */
1266
1267 #ifdef CONFIG_AP
1268         if (wpa_s->ap_iface)
1269                 ap = 1;
1270 #endif /* CONFIG_AP */
1271
1272         wpa_supplicant_notify_scanning(wpa_s, 0);
1273
1274         scan_res = wpa_supplicant_get_scan_results(wpa_s,
1275                                                    data ? &data->scan_info :
1276                                                    NULL, 1);
1277         if (scan_res == NULL) {
1278                 if (wpa_s->conf->ap_scan == 2 || ap ||
1279                     wpa_s->scan_res_handler == scan_only_handler)
1280                         return -1;
1281                 if (!own_request)
1282                         return -1;
1283                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
1284                         "scanning again");
1285                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
1286                 ret = -1;
1287                 goto scan_work_done;
1288         }
1289
1290 #ifndef CONFIG_NO_RANDOM_POOL
1291         num = scan_res->num;
1292         if (num > 10)
1293                 num = 10;
1294         for (i = 0; i < num; i++) {
1295                 u8 buf[5];
1296                 struct wpa_scan_res *res = scan_res->res[i];
1297                 buf[0] = res->bssid[5];
1298                 buf[1] = res->qual & 0xff;
1299                 buf[2] = res->noise & 0xff;
1300                 buf[3] = res->level & 0xff;
1301                 buf[4] = res->tsf & 0xff;
1302                 random_add_randomness(buf, sizeof(buf));
1303         }
1304 #endif /* CONFIG_NO_RANDOM_POOL */
1305
1306         if (own_request && wpa_s->scan_res_handler &&
1307             (wpa_s->own_scan_running || !wpa_s->external_scan_running)) {
1308                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
1309                                          struct wpa_scan_results *scan_res);
1310
1311                 scan_res_handler = wpa_s->scan_res_handler;
1312                 wpa_s->scan_res_handler = NULL;
1313                 scan_res_handler(wpa_s, scan_res);
1314                 ret = -2;
1315                 goto scan_work_done;
1316         }
1317
1318         if (ap) {
1319                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
1320 #ifdef CONFIG_AP
1321                 if (wpa_s->ap_iface->scan_cb)
1322                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
1323 #endif /* CONFIG_AP */
1324                 goto scan_work_done;
1325         }
1326
1327         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available (own=%u ext=%u)",
1328                 wpa_s->own_scan_running, wpa_s->external_scan_running);
1329         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
1330             wpa_s->manual_scan_use_id && wpa_s->own_scan_running) {
1331                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS "id=%u",
1332                              wpa_s->manual_scan_id);
1333                 wpa_s->manual_scan_use_id = 0;
1334         } else {
1335                 wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
1336         }
1337         wpas_notify_scan_results(wpa_s);
1338
1339         wpas_notify_scan_done(wpa_s, 1);
1340
1341         if (!wpa_s->own_scan_running && wpa_s->external_scan_running) {
1342                 wpa_dbg(wpa_s, MSG_DEBUG, "Do not use results from externally requested scan operation for network selection");
1343                 wpa_scan_results_free(scan_res);
1344                 return 0;
1345         }
1346
1347         if (sme_proc_obss_scan(wpa_s) > 0)
1348                 goto scan_work_done;
1349
1350         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s)))
1351                 goto scan_work_done;
1352
1353         if (autoscan_notify_scan(wpa_s, scan_res))
1354                 goto scan_work_done;
1355
1356         if (wpa_s->disconnected) {
1357                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1358                 goto scan_work_done;
1359         }
1360
1361         if (!wpas_driver_bss_selection(wpa_s) &&
1362             bgscan_notify_scan(wpa_s, scan_res) == 1)
1363                 goto scan_work_done;
1364
1365         wpas_wps_update_ap_info(wpa_s, scan_res);
1366
1367         wpa_scan_results_free(scan_res);
1368
1369         if (wpa_s->scan_work) {
1370                 struct wpa_radio_work *work = wpa_s->scan_work;
1371                 wpa_s->scan_work = NULL;
1372                 radio_work_done(work);
1373         }
1374
1375         return wpas_select_network_from_last_scan(wpa_s, 1, own_request);
1376
1377 scan_work_done:
1378         wpa_scan_results_free(scan_res);
1379         if (wpa_s->scan_work) {
1380                 struct wpa_radio_work *work = wpa_s->scan_work;
1381                 wpa_s->scan_work = NULL;
1382                 radio_work_done(work);
1383         }
1384         return ret;
1385 }
1386
1387
1388 static int wpas_select_network_from_last_scan(struct wpa_supplicant *wpa_s,
1389                                               int new_scan, int own_request)
1390 {
1391         struct wpa_bss *selected;
1392         struct wpa_ssid *ssid = NULL;
1393
1394         selected = wpa_supplicant_pick_network(wpa_s, &ssid);
1395
1396         if (selected) {
1397                 int skip;
1398                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid);
1399                 if (skip) {
1400                         if (new_scan)
1401                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1402                         return 0;
1403                 }
1404
1405                 if (wpa_supplicant_connect(wpa_s, selected, ssid) < 0) {
1406                         wpa_dbg(wpa_s, MSG_DEBUG, "Connect failed");
1407                         return -1;
1408                 }
1409                 if (new_scan)
1410                         wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1411                 /*
1412                  * Do not notify other virtual radios of scan results since we do not
1413                  * want them to start other associations at the same time.
1414                  */
1415                 return 1;
1416         } else {
1417                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
1418                 ssid = wpa_supplicant_pick_new_network(wpa_s);
1419                 if (ssid) {
1420                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
1421                         wpa_supplicant_associate(wpa_s, NULL, ssid);
1422                         if (new_scan)
1423                                 wpa_supplicant_rsn_preauth_scan_results(wpa_s);
1424                 } else if (own_request) {
1425                         /*
1426                          * No SSID found. If SCAN results are as a result of
1427                          * own scan request and not due to a scan request on
1428                          * another shared interface, try another scan.
1429                          */
1430                         int timeout_sec = wpa_s->scan_interval;
1431                         int timeout_usec = 0;
1432 #ifdef CONFIG_P2P
1433                         if (wpas_p2p_scan_no_go_seen(wpa_s) == 1)
1434                                 return 0;
1435
1436                         if (wpa_s->p2p_in_provisioning ||
1437                             wpa_s->show_group_started ||
1438                             wpa_s->p2p_in_invitation) {
1439                                 /*
1440                                  * Use shorter wait during P2P Provisioning
1441                                  * state and during P2P join-a-group operation
1442                                  * to speed up group formation.
1443                                  */
1444                                 timeout_sec = 0;
1445                                 timeout_usec = 250000;
1446                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1447                                                             timeout_usec);
1448                                 return 0;
1449                         }
1450 #endif /* CONFIG_P2P */
1451 #ifdef CONFIG_INTERWORKING
1452                         if (wpa_s->conf->auto_interworking &&
1453                             wpa_s->conf->interworking &&
1454                             wpa_s->conf->cred) {
1455                                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: "
1456                                         "start ANQP fetch since no matching "
1457                                         "networks found");
1458                                 wpa_s->network_select = 1;
1459                                 wpa_s->auto_network_select = 1;
1460                                 interworking_start_fetch_anqp(wpa_s);
1461                                 return 1;
1462                         }
1463 #endif /* CONFIG_INTERWORKING */
1464 #ifdef CONFIG_WPS
1465                         if (wpa_s->after_wps > 0 || wpas_wps_searching(wpa_s)) {
1466                                 wpa_dbg(wpa_s, MSG_DEBUG, "Use shorter wait during WPS processing");
1467                                 timeout_sec = 0;
1468                                 timeout_usec = 500000;
1469                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1470                                                             timeout_usec);
1471                                 return 0;
1472                         }
1473 #endif /* CONFIG_WPS */
1474                         if (wpa_supplicant_req_sched_scan(wpa_s))
1475                                 wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
1476                                                             timeout_usec);
1477                 }
1478         }
1479         return 0;
1480 }
1481
1482
1483 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
1484                                               union wpa_event_data *data)
1485 {
1486         struct wpa_supplicant *ifs;
1487
1488         if (_wpa_supplicant_event_scan_results(wpa_s, data, 1) != 0) {
1489                 /*
1490                  * If no scan results could be fetched, then no need to
1491                  * notify those interfaces that did not actually request
1492                  * this scan. Similarly, if scan results started a new operation on this
1493                  * interface, do not notify other interfaces to avoid concurrent
1494                  * operations during a connection attempt.
1495                  */
1496                 return;
1497         }
1498
1499         /*
1500          * Check other interfaces to see if they share the same radio. If
1501          * so, they get updated with this same scan info.
1502          */
1503         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
1504                          radio_list) {
1505                 if (ifs != wpa_s) {
1506                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1507                                    "sibling", ifs->ifname);
1508                         _wpa_supplicant_event_scan_results(ifs, data, 0);
1509                 }
1510         }
1511 }
1512
1513 #endif /* CONFIG_NO_SCAN_PROCESSING */
1514
1515
1516 int wpa_supplicant_fast_associate(struct wpa_supplicant *wpa_s)
1517 {
1518 #ifdef CONFIG_NO_SCAN_PROCESSING
1519         return -1;
1520 #else /* CONFIG_NO_SCAN_PROCESSING */
1521         struct os_reltime now;
1522
1523         if (wpa_s->last_scan_res_used <= 0)
1524                 return -1;
1525
1526         os_get_reltime(&now);
1527         if (os_reltime_expired(&now, &wpa_s->last_scan, 5)) {
1528                 wpa_printf(MSG_DEBUG, "Fast associate: Old scan results");
1529                 return -1;
1530         }
1531
1532         return wpas_select_network_from_last_scan(wpa_s, 0, 1);
1533 #endif /* CONFIG_NO_SCAN_PROCESSING */
1534 }
1535
1536 #ifdef CONFIG_WNM
1537
1538 static void wnm_bss_keep_alive(void *eloop_ctx, void *sock_ctx)
1539 {
1540         struct wpa_supplicant *wpa_s = eloop_ctx;
1541
1542         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1543                 return;
1544
1545         if (!wpa_s->no_keep_alive) {
1546                 wpa_printf(MSG_DEBUG, "WNM: Send keep-alive to AP " MACSTR,
1547                            MAC2STR(wpa_s->bssid));
1548                 /* TODO: could skip this if normal data traffic has been sent */
1549                 /* TODO: Consider using some more appropriate data frame for
1550                  * this */
1551                 if (wpa_s->l2)
1552                         l2_packet_send(wpa_s->l2, wpa_s->bssid, 0x0800,
1553                                        (u8 *) "", 0);
1554         }
1555
1556 #ifdef CONFIG_SME
1557         if (wpa_s->sme.bss_max_idle_period) {
1558                 unsigned int msec;
1559                 msec = wpa_s->sme.bss_max_idle_period * 1024; /* times 1000 */
1560                 if (msec > 100)
1561                         msec -= 100;
1562                 eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1563                                        wnm_bss_keep_alive, wpa_s, NULL);
1564         }
1565 #endif /* CONFIG_SME */
1566 }
1567
1568
1569 static void wnm_process_assoc_resp(struct wpa_supplicant *wpa_s,
1570                                    const u8 *ies, size_t ies_len)
1571 {
1572         struct ieee802_11_elems elems;
1573
1574         if (ies == NULL)
1575                 return;
1576
1577         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1578                 return;
1579
1580 #ifdef CONFIG_SME
1581         if (elems.bss_max_idle_period) {
1582                 unsigned int msec;
1583                 wpa_s->sme.bss_max_idle_period =
1584                         WPA_GET_LE16(elems.bss_max_idle_period);
1585                 wpa_printf(MSG_DEBUG, "WNM: BSS Max Idle Period: %u (* 1000 "
1586                            "TU)%s", wpa_s->sme.bss_max_idle_period,
1587                            (elems.bss_max_idle_period[2] & 0x01) ?
1588                            " (protected keep-live required)" : "");
1589                 if (wpa_s->sme.bss_max_idle_period == 0)
1590                         wpa_s->sme.bss_max_idle_period = 1;
1591                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) {
1592                         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1593                          /* msec times 1000 */
1594                         msec = wpa_s->sme.bss_max_idle_period * 1024;
1595                         if (msec > 100)
1596                                 msec -= 100;
1597                         eloop_register_timeout(msec / 1000, msec % 1000 * 1000,
1598                                                wnm_bss_keep_alive, wpa_s,
1599                                                NULL);
1600                 }
1601         }
1602 #endif /* CONFIG_SME */
1603 }
1604
1605 #endif /* CONFIG_WNM */
1606
1607
1608 void wnm_bss_keep_alive_deinit(struct wpa_supplicant *wpa_s)
1609 {
1610 #ifdef CONFIG_WNM
1611         eloop_cancel_timeout(wnm_bss_keep_alive, wpa_s, NULL);
1612 #endif /* CONFIG_WNM */
1613 }
1614
1615
1616 #ifdef CONFIG_INTERWORKING
1617
1618 static int wpas_qos_map_set(struct wpa_supplicant *wpa_s, const u8 *qos_map,
1619                             size_t len)
1620 {
1621         int res;
1622
1623         wpa_hexdump(MSG_DEBUG, "Interworking: QoS Map Set", qos_map, len);
1624         res = wpa_drv_set_qos_map(wpa_s, qos_map, len);
1625         if (res) {
1626                 wpa_printf(MSG_DEBUG, "Interworking: Failed to configure QoS Map Set to the driver");
1627         }
1628
1629         return res;
1630 }
1631
1632
1633 static void interworking_process_assoc_resp(struct wpa_supplicant *wpa_s,
1634                                             const u8 *ies, size_t ies_len)
1635 {
1636         struct ieee802_11_elems elems;
1637
1638         if (ies == NULL)
1639                 return;
1640
1641         if (ieee802_11_parse_elems(ies, ies_len, &elems, 1) == ParseFailed)
1642                 return;
1643
1644         if (elems.qos_map_set) {
1645                 wpas_qos_map_set(wpa_s, elems.qos_map_set,
1646                                  elems.qos_map_set_len);
1647         }
1648 }
1649
1650 #endif /* CONFIG_INTERWORKING */
1651
1652
1653 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1654                                           union wpa_event_data *data)
1655 {
1656         int l, len, found = 0, wpa_found, rsn_found;
1657         const u8 *p;
1658 #ifdef CONFIG_IEEE80211R
1659         u8 bssid[ETH_ALEN];
1660 #endif /* CONFIG_IEEE80211R */
1661
1662         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1663         if (data->assoc_info.req_ies)
1664                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1665                             data->assoc_info.req_ies_len);
1666         if (data->assoc_info.resp_ies) {
1667                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1668                             data->assoc_info.resp_ies_len);
1669 #ifdef CONFIG_TDLS
1670                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1671                                         data->assoc_info.resp_ies_len);
1672 #endif /* CONFIG_TDLS */
1673 #ifdef CONFIG_WNM
1674                 wnm_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1675                                        data->assoc_info.resp_ies_len);
1676 #endif /* CONFIG_WNM */
1677 #ifdef CONFIG_INTERWORKING
1678                 interworking_process_assoc_resp(wpa_s, data->assoc_info.resp_ies,
1679                                                 data->assoc_info.resp_ies_len);
1680 #endif /* CONFIG_INTERWORKING */
1681         }
1682         if (data->assoc_info.beacon_ies)
1683                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1684                             data->assoc_info.beacon_ies,
1685                             data->assoc_info.beacon_ies_len);
1686         if (data->assoc_info.freq)
1687                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1688                         data->assoc_info.freq);
1689
1690         p = data->assoc_info.req_ies;
1691         l = data->assoc_info.req_ies_len;
1692
1693         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1694         while (p && l >= 2) {
1695                 len = p[1] + 2;
1696                 if (len > l) {
1697                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1698                                     p, l);
1699                         break;
1700                 }
1701                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1702                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1703                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1704                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1705                                 break;
1706                         found = 1;
1707                         wpa_find_assoc_pmkid(wpa_s);
1708                         break;
1709                 }
1710                 l -= len;
1711                 p += len;
1712         }
1713         if (!found && data->assoc_info.req_ies)
1714                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1715
1716 #ifdef CONFIG_IEEE80211R
1717 #ifdef CONFIG_SME
1718         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1719                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1720                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1721                                                  data->assoc_info.resp_ies,
1722                                                  data->assoc_info.resp_ies_len,
1723                                                  bssid) < 0) {
1724                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1725                                 "Reassociation Response failed");
1726                         wpa_supplicant_deauthenticate(
1727                                 wpa_s, WLAN_REASON_INVALID_IE);
1728                         return -1;
1729                 }
1730         }
1731
1732         p = data->assoc_info.resp_ies;
1733         l = data->assoc_info.resp_ies_len;
1734
1735 #ifdef CONFIG_WPS_STRICT
1736         if (p && wpa_s->current_ssid &&
1737             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1738                 struct wpabuf *wps;
1739                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1740                 if (wps == NULL) {
1741                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1742                                 "include WPS IE in (Re)Association Response");
1743                         return -1;
1744                 }
1745
1746                 if (wps_validate_assoc_resp(wps) < 0) {
1747                         wpabuf_free(wps);
1748                         wpa_supplicant_deauthenticate(
1749                                 wpa_s, WLAN_REASON_INVALID_IE);
1750                         return -1;
1751                 }
1752                 wpabuf_free(wps);
1753         }
1754 #endif /* CONFIG_WPS_STRICT */
1755
1756         /* Go through the IEs and make a copy of the MDIE, if present. */
1757         while (p && l >= 2) {
1758                 len = p[1] + 2;
1759                 if (len > l) {
1760                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1761                                     p, l);
1762                         break;
1763                 }
1764                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1765                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1766                         wpa_s->sme.ft_used = 1;
1767                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1768                                   MOBILITY_DOMAIN_ID_LEN);
1769                         break;
1770                 }
1771                 l -= len;
1772                 p += len;
1773         }
1774 #endif /* CONFIG_SME */
1775
1776         /* Process FT when SME is in the driver */
1777         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) &&
1778             wpa_ft_is_completed(wpa_s->wpa)) {
1779                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1780                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1781                                                  data->assoc_info.resp_ies,
1782                                                  data->assoc_info.resp_ies_len,
1783                                                  bssid) < 0) {
1784                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1785                                 "Reassociation Response failed");
1786                         wpa_supplicant_deauthenticate(
1787                                 wpa_s, WLAN_REASON_INVALID_IE);
1788                         return -1;
1789                 }
1790                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Reassociation Response done");
1791         }
1792
1793         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1794                              data->assoc_info.resp_ies_len);
1795 #endif /* CONFIG_IEEE80211R */
1796
1797         /* WPA/RSN IE from Beacon/ProbeResp */
1798         p = data->assoc_info.beacon_ies;
1799         l = data->assoc_info.beacon_ies_len;
1800
1801         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1802          */
1803         wpa_found = rsn_found = 0;
1804         while (p && l >= 2) {
1805                 len = p[1] + 2;
1806                 if (len > l) {
1807                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1808                                     p, l);
1809                         break;
1810                 }
1811                 if (!wpa_found &&
1812                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1813                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1814                         wpa_found = 1;
1815                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1816                 }
1817
1818                 if (!rsn_found &&
1819                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1820                         rsn_found = 1;
1821                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1822                 }
1823
1824                 l -= len;
1825                 p += len;
1826         }
1827
1828         if (!wpa_found && data->assoc_info.beacon_ies)
1829                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1830         if (!rsn_found && data->assoc_info.beacon_ies)
1831                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1832         if (wpa_found || rsn_found)
1833                 wpa_s->ap_ies_from_associnfo = 1;
1834
1835         if (wpa_s->assoc_freq && data->assoc_info.freq &&
1836             wpa_s->assoc_freq != data->assoc_info.freq) {
1837                 wpa_printf(MSG_DEBUG, "Operating frequency changed from "
1838                            "%u to %u MHz",
1839                            wpa_s->assoc_freq, data->assoc_info.freq);
1840                 wpa_supplicant_update_scan_results(wpa_s);
1841         }
1842
1843         wpa_s->assoc_freq = data->assoc_info.freq;
1844
1845         return 0;
1846 }
1847
1848
1849 static int wpa_supplicant_assoc_update_ie(struct wpa_supplicant *wpa_s)
1850 {
1851         const u8 *bss_wpa = NULL, *bss_rsn = NULL;
1852
1853         if (!wpa_s->current_bss || !wpa_s->current_ssid)
1854                 return -1;
1855
1856         if (!wpa_key_mgmt_wpa_any(wpa_s->current_ssid->key_mgmt))
1857                 return 0;
1858
1859         bss_wpa = wpa_bss_get_vendor_ie(wpa_s->current_bss,
1860                                         WPA_IE_VENDOR_TYPE);
1861         bss_rsn = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_RSN);
1862
1863         if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, bss_wpa,
1864                                  bss_wpa ? 2 + bss_wpa[1] : 0) ||
1865             wpa_sm_set_ap_rsn_ie(wpa_s->wpa, bss_rsn,
1866                                  bss_rsn ? 2 + bss_rsn[1] : 0))
1867                 return -1;
1868
1869         return 0;
1870 }
1871
1872
1873 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1874                                        union wpa_event_data *data)
1875 {
1876         u8 bssid[ETH_ALEN];
1877         int ft_completed;
1878
1879 #ifdef CONFIG_AP
1880         if (wpa_s->ap_iface) {
1881                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1882                                     data->assoc_info.addr,
1883                                     data->assoc_info.req_ies,
1884                                     data->assoc_info.req_ies_len,
1885                                     data->assoc_info.reassoc);
1886                 return;
1887         }
1888 #endif /* CONFIG_AP */
1889
1890         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1891         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1892                 return;
1893
1894         if (wpa_drv_get_bssid(wpa_s, bssid) < 0) {
1895                 wpa_dbg(wpa_s, MSG_ERROR, "Failed to get BSSID");
1896                 wpa_supplicant_deauthenticate(
1897                         wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1898                 return;
1899         }
1900
1901         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1902         if (os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0) {
1903                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1904                         MACSTR, MAC2STR(bssid));
1905                 random_add_randomness(bssid, ETH_ALEN);
1906                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1907                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1908                 wpas_notify_bssid_changed(wpa_s);
1909
1910                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1911                         wpa_clear_keys(wpa_s, bssid);
1912                 }
1913                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1914                         wpa_supplicant_deauthenticate(
1915                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1916                         return;
1917                 }
1918
1919                 if (wpa_s->conf->ap_scan == 1 &&
1920                     wpa_s->drv_flags & WPA_DRIVER_FLAGS_BSS_SELECTION) {
1921                         if (wpa_supplicant_assoc_update_ie(wpa_s) < 0)
1922                                 wpa_msg(wpa_s, MSG_WARNING,
1923                                         "WPA/RSN IEs not updated");
1924                 }
1925         }
1926
1927 #ifdef CONFIG_SME
1928         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1929         wpa_s->sme.prev_bssid_set = 1;
1930 #endif /* CONFIG_SME */
1931
1932         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1933         if (wpa_s->current_ssid) {
1934                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1935                  * initialized before association, but for other modes,
1936                  * initialize PC/SC here, if the current configuration needs
1937                  * smartcard or SIM/USIM. */
1938                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1939         }
1940         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1941         if (wpa_s->l2)
1942                 l2_packet_notify_auth_start(wpa_s->l2);
1943
1944         /*
1945          * Set portEnabled first to FALSE in order to get EAP state machine out
1946          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1947          * state machine may transit to AUTHENTICATING state based on obsolete
1948          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1949          * AUTHENTICATED without ever giving chance to EAP state machine to
1950          * reset the state.
1951          */
1952         if (!ft_completed) {
1953                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1954                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1955         }
1956         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1957                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1958         /* 802.1X::portControl = Auto */
1959         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1960         wpa_s->eapol_received = 0;
1961         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1962             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1963             (wpa_s->current_ssid &&
1964              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1965                 if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE &&
1966                     (wpa_s->drv_flags &
1967                      WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
1968                         /*
1969                          * Set the key after having received joined-IBSS event
1970                          * from the driver.
1971                          */
1972                         wpa_supplicant_set_wpa_none_key(wpa_s,
1973                                                         wpa_s->current_ssid);
1974                 }
1975                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1976                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1977         } else if (!ft_completed) {
1978                 /* Timeout for receiving the first EAPOL packet */
1979                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1980         }
1981         wpa_supplicant_cancel_scan(wpa_s);
1982
1983         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1984             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1985                 /*
1986                  * We are done; the driver will take care of RSN 4-way
1987                  * handshake.
1988                  */
1989                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1990                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1991                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1992                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1993         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1994                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1995                 /*
1996                  * The driver will take care of RSN 4-way handshake, so we need
1997                  * to allow EAPOL supplicant to complete its work without
1998                  * waiting for WPA supplicant.
1999                  */
2000                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2001         } else if (ft_completed) {
2002                 /*
2003                  * FT protocol completed - make sure EAPOL state machine ends
2004                  * up in authenticated.
2005                  */
2006                 wpa_supplicant_cancel_auth_timeout(wpa_s);
2007                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
2008                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
2009                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
2010         }
2011
2012         wpa_s->last_eapol_matches_bssid = 0;
2013
2014         if (wpa_s->pending_eapol_rx) {
2015                 struct os_reltime now, age;
2016                 os_get_reltime(&now);
2017                 os_reltime_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
2018                 if (age.sec == 0 && age.usec < 100000 &&
2019                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
2020                     0) {
2021                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
2022                                 "frame that was received just before "
2023                                 "association notification");
2024                         wpa_supplicant_rx_eapol(
2025                                 wpa_s, wpa_s->pending_eapol_rx_src,
2026                                 wpabuf_head(wpa_s->pending_eapol_rx),
2027                                 wpabuf_len(wpa_s->pending_eapol_rx));
2028                 }
2029                 wpabuf_free(wpa_s->pending_eapol_rx);
2030                 wpa_s->pending_eapol_rx = NULL;
2031         }
2032
2033         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
2034              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
2035             wpa_s->current_ssid &&
2036             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE)) {
2037                 /* Set static WEP keys again */
2038                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
2039         }
2040
2041 #ifdef CONFIG_IBSS_RSN
2042         if (wpa_s->current_ssid &&
2043             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
2044             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
2045             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
2046             wpa_s->ibss_rsn == NULL) {
2047                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
2048                 if (!wpa_s->ibss_rsn) {
2049                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
2050                         wpa_supplicant_deauthenticate(
2051                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
2052                         return;
2053                 }
2054
2055                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
2056         }
2057 #endif /* CONFIG_IBSS_RSN */
2058
2059         wpas_wps_notify_assoc(wpa_s, bssid);
2060 }
2061
2062
2063 static int disconnect_reason_recoverable(u16 reason_code)
2064 {
2065         return reason_code == WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY ||
2066                 reason_code == WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA ||
2067                 reason_code == WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA;
2068 }
2069
2070
2071 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
2072                                           u16 reason_code,
2073                                           int locally_generated)
2074 {
2075         const u8 *bssid;
2076
2077         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2078                 /*
2079                  * At least Host AP driver and a Prism3 card seemed to be
2080                  * generating streams of disconnected events when configuring
2081                  * IBSS for WPA-None. Ignore them for now.
2082                  */
2083                 return;
2084         }
2085
2086         bssid = wpa_s->bssid;
2087         if (is_zero_ether_addr(bssid))
2088                 bssid = wpa_s->pending_bssid;
2089
2090         if (!is_zero_ether_addr(bssid) ||
2091             wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2092                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
2093                         " reason=%d%s",
2094                         MAC2STR(bssid), reason_code,
2095                         locally_generated ? " locally_generated=1" : "");
2096         }
2097 }
2098
2099
2100 static int could_be_psk_mismatch(struct wpa_supplicant *wpa_s, u16 reason_code,
2101                                  int locally_generated)
2102 {
2103         if (wpa_s->wpa_state != WPA_4WAY_HANDSHAKE ||
2104             !wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
2105                 return 0; /* Not in 4-way handshake with PSK */
2106
2107         /*
2108          * It looks like connection was lost while trying to go through PSK
2109          * 4-way handshake. Filter out known disconnection cases that are caused
2110          * by something else than PSK mismatch to avoid confusing reports.
2111          */
2112
2113         if (locally_generated) {
2114                 if (reason_code == WLAN_REASON_IE_IN_4WAY_DIFFERS)
2115                         return 0;
2116         }
2117
2118         return 1;
2119 }
2120
2121
2122 static void wpa_supplicant_event_disassoc_finish(struct wpa_supplicant *wpa_s,
2123                                                  u16 reason_code,
2124                                                  int locally_generated)
2125 {
2126         const u8 *bssid;
2127         int authenticating;
2128         u8 prev_pending_bssid[ETH_ALEN];
2129         struct wpa_bss *fast_reconnect = NULL;
2130         struct wpa_ssid *fast_reconnect_ssid = NULL;
2131         struct wpa_ssid *last_ssid;
2132
2133         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
2134         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
2135
2136         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
2137                 /*
2138                  * At least Host AP driver and a Prism3 card seemed to be
2139                  * generating streams of disconnected events when configuring
2140                  * IBSS for WPA-None. Ignore them for now.
2141                  */
2142                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
2143                         "IBSS/WPA-None mode");
2144                 return;
2145         }
2146
2147         if (could_be_psk_mismatch(wpa_s, reason_code, locally_generated)) {
2148                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
2149                         "pre-shared key may be incorrect");
2150                 if (wpas_p2p_4way_hs_failed(wpa_s) > 0)
2151                         return; /* P2P group removed */
2152                 wpas_auth_failed(wpa_s);
2153         }
2154         if (!wpa_s->disconnected &&
2155             (!wpa_s->auto_reconnect_disabled ||
2156              wpa_s->key_mgmt == WPA_KEY_MGMT_WPS)) {
2157                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect enabled: try to "
2158                         "reconnect (wps=%d wpa_state=%d)",
2159                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS,
2160                         wpa_s->wpa_state);
2161                 if (wpa_s->wpa_state == WPA_COMPLETED &&
2162                     wpa_s->current_ssid &&
2163                     wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
2164                     !locally_generated &&
2165                     disconnect_reason_recoverable(reason_code)) {
2166                         /*
2167                          * It looks like the AP has dropped association with
2168                          * us, but could allow us to get back in. Try to
2169                          * reconnect to the same BSS without full scan to save
2170                          * time for some common cases.
2171                          */
2172                         fast_reconnect = wpa_s->current_bss;
2173                         fast_reconnect_ssid = wpa_s->current_ssid;
2174                 } else if (wpa_s->wpa_state >= WPA_ASSOCIATING)
2175                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2176                 else
2177                         wpa_dbg(wpa_s, MSG_DEBUG, "Do not request new "
2178                                 "immediate scan");
2179         } else {
2180                 wpa_dbg(wpa_s, MSG_DEBUG, "Auto connect disabled: do not "
2181                         "try to re-connect");
2182                 wpa_s->reassociate = 0;
2183                 wpa_s->disconnected = 1;
2184                 wpa_supplicant_cancel_sched_scan(wpa_s);
2185         }
2186         bssid = wpa_s->bssid;
2187         if (is_zero_ether_addr(bssid))
2188                 bssid = wpa_s->pending_bssid;
2189         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
2190                 wpas_connection_failed(wpa_s, bssid);
2191         wpa_sm_notify_disassoc(wpa_s->wpa);
2192         if (locally_generated)
2193                 wpa_s->disconnect_reason = -reason_code;
2194         else
2195                 wpa_s->disconnect_reason = reason_code;
2196         wpas_notify_disconnect_reason(wpa_s);
2197         if (wpa_supplicant_dynamic_keys(wpa_s)) {
2198                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
2199                 wpa_clear_keys(wpa_s, wpa_s->bssid);
2200         }
2201         last_ssid = wpa_s->current_ssid;
2202         wpa_supplicant_mark_disassoc(wpa_s);
2203
2204         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) {
2205                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
2206                 wpa_s->current_ssid = last_ssid;
2207         }
2208
2209         if (fast_reconnect &&
2210             !wpas_network_disabled(wpa_s, fast_reconnect_ssid) &&
2211             !disallowed_bssid(wpa_s, fast_reconnect->bssid) &&
2212             !disallowed_ssid(wpa_s, fast_reconnect->ssid,
2213                              fast_reconnect->ssid_len) &&
2214             !wpas_temp_disabled(wpa_s, fast_reconnect_ssid)) {
2215 #ifndef CONFIG_NO_SCAN_PROCESSING
2216                 wpa_dbg(wpa_s, MSG_DEBUG, "Try to reconnect to the same BSS");
2217                 if (wpa_supplicant_connect(wpa_s, fast_reconnect,
2218                                            fast_reconnect_ssid) < 0) {
2219                         /* Recover through full scan */
2220                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
2221                 }
2222 #endif /* CONFIG_NO_SCAN_PROCESSING */
2223         } else if (fast_reconnect) {
2224                 /*
2225                  * Could not reconnect to the same BSS due to network being
2226                  * disabled. Use a new scan to match the alternative behavior
2227                  * above, i.e., to continue automatic reconnection attempt in a
2228                  * way that enforces disabled network rules.
2229                  */
2230                 wpa_supplicant_req_scan(wpa_s, 0, 100000);
2231         }
2232 }
2233
2234
2235 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2236 void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx, void *sock_ctx)
2237 {
2238         struct wpa_supplicant *wpa_s = eloop_ctx;
2239
2240         if (!wpa_s->pending_mic_error_report)
2241                 return;
2242
2243         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
2244         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
2245         wpa_s->pending_mic_error_report = 0;
2246 }
2247 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2248
2249
2250 static void
2251 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
2252                                          union wpa_event_data *data)
2253 {
2254         int pairwise;
2255         struct os_reltime t;
2256
2257         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
2258         pairwise = (data && data->michael_mic_failure.unicast);
2259         os_get_reltime(&t);
2260         if ((wpa_s->last_michael_mic_error.sec &&
2261              !os_reltime_expired(&t, &wpa_s->last_michael_mic_error, 60)) ||
2262             wpa_s->pending_mic_error_report) {
2263                 if (wpa_s->pending_mic_error_report) {
2264                         /*
2265                          * Send the pending MIC error report immediately since
2266                          * we are going to start countermeasures and AP better
2267                          * do the same.
2268                          */
2269                         wpa_sm_key_request(wpa_s->wpa, 1,
2270                                            wpa_s->pending_mic_error_pairwise);
2271                 }
2272
2273                 /* Send the new MIC error report immediately since we are going
2274                  * to start countermeasures and AP better do the same.
2275                  */
2276                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2277
2278                 /* initialize countermeasures */
2279                 wpa_s->countermeasures = 1;
2280
2281                 wpa_blacklist_add(wpa_s, wpa_s->bssid);
2282
2283                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
2284
2285                 /*
2286                  * Need to wait for completion of request frame. We do not get
2287                  * any callback for the message completion, so just wait a
2288                  * short while and hope for the best. */
2289                 os_sleep(0, 10000);
2290
2291                 wpa_drv_set_countermeasures(wpa_s, 1);
2292                 wpa_supplicant_deauthenticate(wpa_s,
2293                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
2294                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
2295                                      wpa_s, NULL);
2296                 eloop_register_timeout(60, 0,
2297                                        wpa_supplicant_stop_countermeasures,
2298                                        wpa_s, NULL);
2299                 /* TODO: mark the AP rejected for 60 second. STA is
2300                  * allowed to associate with another AP.. */
2301         } else {
2302 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
2303                 if (wpa_s->mic_errors_seen) {
2304                         /*
2305                          * Reduce the effectiveness of Michael MIC error
2306                          * reports as a means for attacking against TKIP if
2307                          * more than one MIC failure is noticed with the same
2308                          * PTK. We delay the transmission of the reports by a
2309                          * random time between 0 and 60 seconds in order to
2310                          * force the attacker wait 60 seconds before getting
2311                          * the information on whether a frame resulted in a MIC
2312                          * failure.
2313                          */
2314                         u8 rval[4];
2315                         int sec;
2316
2317                         if (os_get_random(rval, sizeof(rval)) < 0)
2318                                 sec = os_random() % 60;
2319                         else
2320                                 sec = WPA_GET_BE32(rval) % 60;
2321                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
2322                                 "report %d seconds", sec);
2323                         wpa_s->pending_mic_error_report = 1;
2324                         wpa_s->pending_mic_error_pairwise = pairwise;
2325                         eloop_cancel_timeout(
2326                                 wpa_supplicant_delayed_mic_error_report,
2327                                 wpa_s, NULL);
2328                         eloop_register_timeout(
2329                                 sec, os_random() % 1000000,
2330                                 wpa_supplicant_delayed_mic_error_report,
2331                                 wpa_s, NULL);
2332                 } else {
2333                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2334                 }
2335 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2336                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
2337 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
2338         }
2339         wpa_s->last_michael_mic_error = t;
2340         wpa_s->mic_errors_seen++;
2341 }
2342
2343
2344 #ifdef CONFIG_TERMINATE_ONLASTIF
2345 static int any_interfaces(struct wpa_supplicant *head)
2346 {
2347         struct wpa_supplicant *wpa_s;
2348
2349         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
2350                 if (!wpa_s->interface_removed)
2351                         return 1;
2352         return 0;
2353 }
2354 #endif /* CONFIG_TERMINATE_ONLASTIF */
2355
2356
2357 static void
2358 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
2359                                       union wpa_event_data *data)
2360 {
2361         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
2362                 return;
2363
2364         switch (data->interface_status.ievent) {
2365         case EVENT_INTERFACE_ADDED:
2366                 if (!wpa_s->interface_removed)
2367                         break;
2368                 wpa_s->interface_removed = 0;
2369                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
2370                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
2371                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
2372                                 "driver after interface was added");
2373                 }
2374                 break;
2375         case EVENT_INTERFACE_REMOVED:
2376                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
2377                 wpa_s->interface_removed = 1;
2378                 wpa_supplicant_mark_disassoc(wpa_s);
2379                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2380                 l2_packet_deinit(wpa_s->l2);
2381                 wpa_s->l2 = NULL;
2382 #ifdef CONFIG_IBSS_RSN
2383                 ibss_rsn_deinit(wpa_s->ibss_rsn);
2384                 wpa_s->ibss_rsn = NULL;
2385 #endif /* CONFIG_IBSS_RSN */
2386 #ifdef CONFIG_TERMINATE_ONLASTIF
2387                 /* check if last interface */
2388                 if (!any_interfaces(wpa_s->global->ifaces))
2389                         eloop_terminate();
2390 #endif /* CONFIG_TERMINATE_ONLASTIF */
2391                 break;
2392         }
2393 }
2394
2395
2396 #ifdef CONFIG_PEERKEY
2397 static void
2398 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
2399                               union wpa_event_data *data)
2400 {
2401         if (data == NULL)
2402                 return;
2403         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
2404 }
2405 #endif /* CONFIG_PEERKEY */
2406
2407
2408 #ifdef CONFIG_TDLS
2409 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
2410                                       union wpa_event_data *data)
2411 {
2412         if (data == NULL)
2413                 return;
2414         switch (data->tdls.oper) {
2415         case TDLS_REQUEST_SETUP:
2416                 wpa_tdls_remove(wpa_s->wpa, data->tdls.peer);
2417                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2418                         wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
2419                 else
2420                         wpa_drv_tdls_oper(wpa_s, TDLS_SETUP, data->tdls.peer);
2421                 break;
2422         case TDLS_REQUEST_TEARDOWN:
2423                 if (wpa_tdls_is_external_setup(wpa_s->wpa))
2424                         wpa_tdls_teardown_link(wpa_s->wpa, data->tdls.peer,
2425                                                data->tdls.reason_code);
2426                 else
2427                         wpa_drv_tdls_oper(wpa_s, TDLS_TEARDOWN,
2428                                           data->tdls.peer);
2429                 break;
2430         }
2431 }
2432 #endif /* CONFIG_TDLS */
2433
2434
2435 #ifdef CONFIG_WNM
2436 static void wpa_supplicant_event_wnm(struct wpa_supplicant *wpa_s,
2437                                      union wpa_event_data *data)
2438 {
2439         if (data == NULL)
2440                 return;
2441         switch (data->wnm.oper) {
2442         case WNM_OPER_SLEEP:
2443                 wpa_printf(MSG_DEBUG, "Start sending WNM-Sleep Request "
2444                            "(action=%d, intval=%d)",
2445                            data->wnm.sleep_action, data->wnm.sleep_intval);
2446                 ieee802_11_send_wnmsleep_req(wpa_s, data->wnm.sleep_action,
2447                                              data->wnm.sleep_intval, NULL);
2448                 break;
2449         }
2450 }
2451 #endif /* CONFIG_WNM */
2452
2453
2454 #ifdef CONFIG_IEEE80211R
2455 static void
2456 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
2457                                  union wpa_event_data *data)
2458 {
2459         if (data == NULL)
2460                 return;
2461
2462         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
2463                                     data->ft_ies.ies_len,
2464                                     data->ft_ies.ft_action,
2465                                     data->ft_ies.target_ap,
2466                                     data->ft_ies.ric_ies,
2467                                     data->ft_ies.ric_ies_len) < 0) {
2468                 /* TODO: prevent MLME/driver from trying to associate? */
2469         }
2470 }
2471 #endif /* CONFIG_IEEE80211R */
2472
2473
2474 #ifdef CONFIG_IBSS_RSN
2475 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
2476                                                 union wpa_event_data *data)
2477 {
2478         struct wpa_ssid *ssid;
2479         if (wpa_s->wpa_state < WPA_ASSOCIATED)
2480                 return;
2481         if (data == NULL)
2482                 return;
2483         ssid = wpa_s->current_ssid;
2484         if (ssid == NULL)
2485                 return;
2486         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2487                 return;
2488
2489         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
2490 }
2491
2492
2493 static void wpa_supplicant_event_ibss_auth(struct wpa_supplicant *wpa_s,
2494                                            union wpa_event_data *data)
2495 {
2496         struct wpa_ssid *ssid = wpa_s->current_ssid;
2497
2498         if (ssid == NULL)
2499                 return;
2500
2501         /* check if the ssid is correctly configured as IBSS/RSN */
2502         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
2503                 return;
2504
2505         ibss_rsn_handle_auth(wpa_s->ibss_rsn, data->rx_mgmt.frame,
2506                              data->rx_mgmt.frame_len);
2507 }
2508 #endif /* CONFIG_IBSS_RSN */
2509
2510
2511 #ifdef CONFIG_IEEE80211R
2512 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
2513                          size_t len)
2514 {
2515         const u8 *sta_addr, *target_ap_addr;
2516         u16 status;
2517
2518         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
2519         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
2520                 return; /* only SME case supported for now */
2521         if (len < 1 + 2 * ETH_ALEN + 2)
2522                 return;
2523         if (data[0] != 2)
2524                 return; /* Only FT Action Response is supported for now */
2525         sta_addr = data + 1;
2526         target_ap_addr = data + 1 + ETH_ALEN;
2527         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
2528         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
2529                 MACSTR " TargetAP " MACSTR " status %u",
2530                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
2531
2532         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
2533                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
2534                         " in FT Action Response", MAC2STR(sta_addr));
2535                 return;
2536         }
2537
2538         if (status) {
2539                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
2540                         "failure (status code %d)", status);
2541                 /* TODO: report error to FT code(?) */
2542                 return;
2543         }
2544
2545         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
2546                                     len - (1 + 2 * ETH_ALEN + 2), 1,
2547                                     target_ap_addr, NULL, 0) < 0)
2548                 return;
2549
2550 #ifdef CONFIG_SME
2551         {
2552                 struct wpa_bss *bss;
2553                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
2554                 if (bss)
2555                         wpa_s->sme.freq = bss->freq;
2556                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
2557                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
2558                               WLAN_AUTH_FT);
2559         }
2560 #endif /* CONFIG_SME */
2561 }
2562 #endif /* CONFIG_IEEE80211R */
2563
2564
2565 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
2566                                                struct unprot_deauth *e)
2567 {
2568 #ifdef CONFIG_IEEE80211W
2569         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
2570                    "dropped: " MACSTR " -> " MACSTR
2571                    " (reason code %u)",
2572                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2573         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2574 #endif /* CONFIG_IEEE80211W */
2575 }
2576
2577
2578 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
2579                                                  struct unprot_disassoc *e)
2580 {
2581 #ifdef CONFIG_IEEE80211W
2582         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
2583                    "dropped: " MACSTR " -> " MACSTR
2584                    " (reason code %u)",
2585                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
2586         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
2587 #endif /* CONFIG_IEEE80211W */
2588 }
2589
2590
2591 static void wpas_event_disconnect(struct wpa_supplicant *wpa_s, const u8 *addr,
2592                                   u16 reason_code, int locally_generated,
2593                                   const u8 *ie, size_t ie_len, int deauth)
2594 {
2595 #ifdef CONFIG_AP
2596         if (wpa_s->ap_iface && addr) {
2597                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], addr);
2598                 return;
2599         }
2600
2601         if (wpa_s->ap_iface) {
2602                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore deauth event in AP mode");
2603                 return;
2604         }
2605 #endif /* CONFIG_AP */
2606
2607         wpa_supplicant_event_disassoc(wpa_s, reason_code, locally_generated);
2608
2609         if (((reason_code == WLAN_REASON_IEEE_802_1X_AUTH_FAILED ||
2610               ((wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt) ||
2611                 (wpa_s->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) &&
2612                eapol_sm_failed(wpa_s->eapol))) &&
2613              !wpa_s->eap_expected_failure))
2614                 wpas_auth_failed(wpa_s);
2615
2616 #ifdef CONFIG_P2P
2617         if (deauth && reason_code > 0) {
2618                 if (wpas_p2p_deauth_notif(wpa_s, addr, reason_code, ie, ie_len,
2619                                           locally_generated) > 0) {
2620                         /*
2621                          * The interface was removed, so cannot continue
2622                          * processing any additional operations after this.
2623                          */
2624                         return;
2625                 }
2626         }
2627 #endif /* CONFIG_P2P */
2628
2629         wpa_supplicant_event_disassoc_finish(wpa_s, reason_code,
2630                                              locally_generated);
2631 }
2632
2633
2634 static void wpas_event_disassoc(struct wpa_supplicant *wpa_s,
2635                                 struct disassoc_info *info)
2636 {
2637         u16 reason_code = 0;
2638         int locally_generated = 0;
2639         const u8 *addr = NULL;
2640         const u8 *ie = NULL;
2641         size_t ie_len = 0;
2642
2643         wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
2644
2645         if (info) {
2646                 addr = info->addr;
2647                 ie = info->ie;
2648                 ie_len = info->ie_len;
2649                 reason_code = info->reason_code;
2650                 locally_generated = info->locally_generated;
2651                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s", reason_code,
2652                         locally_generated ? " (locally generated)" : "");
2653                 if (addr)
2654                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2655                                 MAC2STR(addr));
2656                 wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
2657                             ie, ie_len);
2658         }
2659
2660 #ifdef CONFIG_AP
2661         if (wpa_s->ap_iface && info && info->addr) {
2662                 hostapd_notif_disassoc(wpa_s->ap_iface->bss[0], info->addr);
2663                 return;
2664         }
2665
2666         if (wpa_s->ap_iface) {
2667                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore disassoc event in AP mode");
2668                 return;
2669         }
2670 #endif /* CONFIG_AP */
2671
2672 #ifdef CONFIG_P2P
2673         if (info) {
2674                 wpas_p2p_disassoc_notif(
2675                         wpa_s, info->addr, reason_code, info->ie, info->ie_len,
2676                         locally_generated);
2677         }
2678 #endif /* CONFIG_P2P */
2679
2680         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
2681                 sme_event_disassoc(wpa_s, info);
2682
2683         wpas_event_disconnect(wpa_s, addr, reason_code, locally_generated,
2684                               ie, ie_len, 0);
2685 }
2686
2687
2688 static void wpas_event_deauth(struct wpa_supplicant *wpa_s,
2689                               struct deauth_info *info)
2690 {
2691         u16 reason_code = 0;
2692         int locally_generated = 0;
2693         const u8 *addr = NULL;
2694         const u8 *ie = NULL;
2695         size_t ie_len = 0;
2696
2697         wpa_dbg(wpa_s, MSG_DEBUG, "Deauthentication notification");
2698
2699         if (info) {
2700                 addr = info->addr;
2701                 ie = info->ie;
2702                 ie_len = info->ie_len;
2703                 reason_code = info->reason_code;
2704                 locally_generated = info->locally_generated;
2705                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u%s",
2706                         reason_code,
2707                         locally_generated ? " (locally generated)" : "");
2708                 if (addr) {
2709                         wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
2710                                 MAC2STR(addr));
2711                 }
2712                 wpa_hexdump(MSG_DEBUG, "Deauthentication frame IE(s)",
2713                             ie, ie_len);
2714         }
2715
2716         wpa_reset_ft_completed(wpa_s->wpa);
2717
2718         wpas_event_disconnect(wpa_s, addr, reason_code,
2719                               locally_generated, ie, ie_len, 1);
2720 }
2721
2722
2723 static const char * reg_init_str(enum reg_change_initiator init)
2724 {
2725         switch (init) {
2726         case REGDOM_SET_BY_CORE:
2727                 return "CORE";
2728         case REGDOM_SET_BY_USER:
2729                 return "USER";
2730         case REGDOM_SET_BY_DRIVER:
2731                 return "DRIVER";
2732         case REGDOM_SET_BY_COUNTRY_IE:
2733                 return "COUNTRY_IE";
2734         case REGDOM_BEACON_HINT:
2735                 return "BEACON_HINT";
2736         }
2737         return "?";
2738 }
2739
2740
2741 static const char * reg_type_str(enum reg_type type)
2742 {
2743         switch (type) {
2744         case REGDOM_TYPE_UNKNOWN:
2745                 return "UNKNOWN";
2746         case REGDOM_TYPE_COUNTRY:
2747                 return "COUNTRY";
2748         case REGDOM_TYPE_WORLD:
2749                 return "WORLD";
2750         case REGDOM_TYPE_CUSTOM_WORLD:
2751                 return "CUSTOM_WORLD";
2752         case REGDOM_TYPE_INTERSECTION:
2753                 return "INTERSECTION";
2754         }
2755         return "?";
2756 }
2757
2758
2759 static void wpa_supplicant_update_channel_list(
2760         struct wpa_supplicant *wpa_s, struct channel_list_changed *info)
2761 {
2762         struct wpa_supplicant *ifs;
2763
2764         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_REGDOM_CHANGE "init=%s type=%s%s%s",
2765                 reg_init_str(info->type), reg_type_str(info->type),
2766                 info->alpha2[0] ? " alpha2=" : "",
2767                 info->alpha2[0] ? info->alpha2 : "");
2768
2769         if (wpa_s->drv_priv == NULL)
2770                 return; /* Ignore event during drv initialization */
2771
2772         free_hw_features(wpa_s);
2773         wpa_s->hw.modes = wpa_drv_get_hw_feature_data(
2774                 wpa_s, &wpa_s->hw.num_modes, &wpa_s->hw.flags);
2775
2776 #ifdef CONFIG_P2P
2777         wpas_p2p_update_channel_list(wpa_s);
2778 #endif /* CONFIG_P2P */
2779
2780         /*
2781          * Check other interfaces to see if they share the same radio. If
2782          * so, they get updated with this same hw mode info.
2783          */
2784         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
2785                          radio_list) {
2786                 if (ifs != wpa_s) {
2787                         wpa_printf(MSG_DEBUG, "%s: Updating hw mode",
2788                                    ifs->ifname);
2789                         free_hw_features(ifs);
2790                         ifs->hw.modes = wpa_drv_get_hw_feature_data(
2791                                 ifs, &ifs->hw.num_modes, &ifs->hw.flags);
2792                 }
2793         }
2794 }
2795
2796
2797 static void wpas_event_rx_mgmt_action(struct wpa_supplicant *wpa_s,
2798                                       const struct ieee80211_mgmt *mgmt,
2799                                       size_t len, int freq)
2800 {
2801         const u8 *payload;
2802         size_t plen;
2803         u8 category;
2804
2805         if (len < IEEE80211_HDRLEN + 2)
2806                 return;
2807
2808         payload = &mgmt->u.action.category;
2809         category = *payload++;
2810         plen = (((const u8 *) mgmt) + len) - payload;
2811
2812         wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
2813                 " Category=%u DataLen=%d freq=%d MHz",
2814                 MAC2STR(mgmt->sa), category, (int) plen, freq);
2815
2816 #ifdef CONFIG_IEEE80211R
2817         if (category == WLAN_ACTION_FT) {
2818                 ft_rx_action(wpa_s, payload, plen);
2819                 return;
2820         }
2821 #endif /* CONFIG_IEEE80211R */
2822
2823 #ifdef CONFIG_IEEE80211W
2824 #ifdef CONFIG_SME
2825         if (category == WLAN_ACTION_SA_QUERY) {
2826                 sme_sa_query_rx(wpa_s, mgmt->sa, payload, plen);
2827                 return;
2828         }
2829 #endif /* CONFIG_SME */
2830 #endif /* CONFIG_IEEE80211W */
2831
2832 #ifdef CONFIG_WNM
2833         if (mgmt->u.action.category == WLAN_ACTION_WNM) {
2834                 ieee802_11_rx_wnm_action(wpa_s, mgmt, len);
2835                 return;
2836         }
2837 #endif /* CONFIG_WNM */
2838
2839 #ifdef CONFIG_GAS
2840         if ((mgmt->u.action.category == WLAN_ACTION_PUBLIC ||
2841              mgmt->u.action.category == WLAN_ACTION_PROTECTED_DUAL) &&
2842             gas_query_rx(wpa_s->gas, mgmt->da, mgmt->sa, mgmt->bssid,
2843                          mgmt->u.action.category,
2844                          payload, plen, freq) == 0)
2845                 return;
2846 #endif /* CONFIG_GAS */
2847
2848 #ifdef CONFIG_TDLS
2849         if (category == WLAN_ACTION_PUBLIC && plen >= 4 &&
2850             payload[0] == WLAN_TDLS_DISCOVERY_RESPONSE) {
2851                 wpa_dbg(wpa_s, MSG_DEBUG,
2852                         "TDLS: Received Discovery Response from " MACSTR,
2853                         MAC2STR(mgmt->sa));
2854                 return;
2855         }
2856 #endif /* CONFIG_TDLS */
2857
2858 #ifdef CONFIG_INTERWORKING
2859         if (category == WLAN_ACTION_QOS && plen >= 1 &&
2860             payload[0] == QOS_QOS_MAP_CONFIG) {
2861                 const u8 *pos = payload + 1;
2862                 size_t qlen = plen - 1;
2863                 wpa_dbg(wpa_s, MSG_DEBUG, "Interworking: Received QoS Map Configure frame from "
2864                         MACSTR, MAC2STR(mgmt->sa));
2865                 if (os_memcmp(mgmt->sa, wpa_s->bssid, ETH_ALEN) == 0 &&
2866                     qlen > 2 && pos[0] == WLAN_EID_QOS_MAP_SET &&
2867                     pos[1] <= qlen - 2 && pos[1] >= 16)
2868                         wpas_qos_map_set(wpa_s, pos + 2, pos[1]);
2869                 return;
2870         }
2871 #endif /* CONFIG_INTERWORKING */
2872
2873 #ifdef CONFIG_P2P
2874         wpas_p2p_rx_action(wpa_s, mgmt->da, mgmt->sa, mgmt->bssid,
2875                            category, payload, plen, freq);
2876 #endif /* CONFIG_P2P */
2877 }
2878
2879
2880 static void wpa_supplicant_notify_avoid_freq(struct wpa_supplicant *wpa_s,
2881                                              union wpa_event_data *event)
2882 {
2883 #ifdef CONFIG_P2P
2884         struct wpa_supplicant *ifs;
2885 #endif /* CONFIG_P2P */
2886         struct wpa_freq_range_list *list;
2887         char *str = NULL;
2888
2889         list = &event->freq_range;
2890
2891         if (list->num)
2892                 str = freq_range_list_str(list);
2893         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AVOID_FREQ "ranges=%s",
2894                 str ? str : "");
2895
2896 #ifdef CONFIG_P2P
2897         if (freq_range_list_parse(&wpa_s->global->p2p_go_avoid_freq, str)) {
2898                 wpa_dbg(wpa_s, MSG_ERROR, "%s: Failed to parse freq range",
2899                         __func__);
2900         } else {
2901                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Update channel list based on frequency avoid event");
2902                 wpas_p2p_update_channel_list(wpa_s);
2903         }
2904
2905         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
2906                 int freq;
2907                 if (!ifs->current_ssid ||
2908                     !ifs->current_ssid->p2p_group ||
2909                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
2910                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
2911                         continue;
2912
2913                 freq = ifs->current_ssid->frequency;
2914                 if (!freq_range_list_includes(list, freq)) {
2915                         wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating frequency %d MHz in safe range",
2916                                 freq);
2917                         continue;
2918                 }
2919
2920                 wpa_dbg(ifs, MSG_DEBUG, "P2P GO operating in unsafe frequency %d MHz",
2921                         freq);
2922                 /* TODO: Consider using CSA or removing the group within
2923                  * wpa_supplicant */
2924                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
2925         }
2926 #endif /* CONFIG_P2P */
2927
2928         os_free(str);
2929 }
2930
2931
2932 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
2933                           union wpa_event_data *data)
2934 {
2935         struct wpa_supplicant *wpa_s = ctx;
2936
2937         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
2938             event != EVENT_INTERFACE_ENABLED &&
2939             event != EVENT_INTERFACE_STATUS &&
2940             event != EVENT_SCHED_SCAN_STOPPED) {
2941                 wpa_dbg(wpa_s, MSG_DEBUG,
2942                         "Ignore event %s (%d) while interface is disabled",
2943                         event_to_string(event), event);
2944                 return;
2945         }
2946
2947 #ifndef CONFIG_NO_STDOUT_DEBUG
2948 {
2949         int level = MSG_DEBUG;
2950
2951         if (event == EVENT_RX_MGMT && data->rx_mgmt.frame_len >= 24) {
2952                 const struct ieee80211_hdr *hdr;
2953                 u16 fc;
2954                 hdr = (const struct ieee80211_hdr *) data->rx_mgmt.frame;
2955                 fc = le_to_host16(hdr->frame_control);
2956                 if (WLAN_FC_GET_TYPE(fc) == WLAN_FC_TYPE_MGMT &&
2957                     WLAN_FC_GET_STYPE(fc) == WLAN_FC_STYPE_BEACON)
2958                         level = MSG_EXCESSIVE;
2959         }
2960
2961         wpa_dbg(wpa_s, level, "Event %s (%d) received",
2962                 event_to_string(event), event);
2963 }
2964 #endif /* CONFIG_NO_STDOUT_DEBUG */
2965
2966         switch (event) {
2967         case EVENT_AUTH:
2968                 sme_event_auth(wpa_s, data);
2969                 break;
2970         case EVENT_ASSOC:
2971                 wpa_supplicant_event_assoc(wpa_s, data);
2972                 break;
2973         case EVENT_DISASSOC:
2974                 wpas_event_disassoc(wpa_s,
2975                                     data ? &data->disassoc_info : NULL);
2976                 break;
2977         case EVENT_DEAUTH:
2978                 wpas_event_deauth(wpa_s,
2979                                   data ? &data->deauth_info : NULL);
2980                 break;
2981         case EVENT_MICHAEL_MIC_FAILURE:
2982                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
2983                 break;
2984 #ifndef CONFIG_NO_SCAN_PROCESSING
2985         case EVENT_SCAN_STARTED:
2986                 os_get_reltime(&wpa_s->scan_start_time);
2987                 if (wpa_s->own_scan_requested) {
2988                         struct os_reltime diff;
2989
2990                         os_reltime_sub(&wpa_s->scan_start_time,
2991                                        &wpa_s->scan_trigger_time, &diff);
2992                         wpa_dbg(wpa_s, MSG_DEBUG, "Own scan request started a scan in %ld.%06ld seconds",
2993                                 diff.sec, diff.usec);
2994                         wpa_s->own_scan_requested = 0;
2995                         wpa_s->own_scan_running = 1;
2996                         if (wpa_s->last_scan_req == MANUAL_SCAN_REQ &&
2997                             wpa_s->manual_scan_use_id) {
2998                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED "id=%u",
2999                                         wpa_s->manual_scan_id);
3000                         } else {
3001                                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3002                         }
3003                 } else {
3004                         wpa_dbg(wpa_s, MSG_DEBUG, "External program started a scan");
3005                         wpa_s->external_scan_running = 1;
3006                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SCAN_STARTED);
3007                 }
3008                 break;
3009         case EVENT_SCAN_RESULTS:
3010                 if (os_reltime_initialized(&wpa_s->scan_start_time)) {
3011                         struct os_reltime now, diff;
3012                         os_get_reltime(&now);
3013                         os_reltime_sub(&now, &wpa_s->scan_start_time, &diff);
3014                         wpa_s->scan_start_time.sec = 0;
3015                         wpa_s->scan_start_time.usec = 0;
3016                         wpa_dbg(wpa_s, MSG_DEBUG, "Scan completed in %ld.%06ld seconds",
3017                                 diff.sec, diff.usec);
3018                 }
3019                 wpa_supplicant_event_scan_results(wpa_s, data);
3020                 wpa_s->own_scan_running = 0;
3021                 wpa_s->external_scan_running = 0;
3022                 radio_work_check_next(wpa_s);
3023                 break;
3024 #endif /* CONFIG_NO_SCAN_PROCESSING */
3025         case EVENT_ASSOCINFO:
3026                 wpa_supplicant_event_associnfo(wpa_s, data);
3027                 break;
3028         case EVENT_INTERFACE_STATUS:
3029                 wpa_supplicant_event_interface_status(wpa_s, data);
3030                 break;
3031         case EVENT_PMKID_CANDIDATE:
3032                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
3033                 break;
3034 #ifdef CONFIG_PEERKEY
3035         case EVENT_STKSTART:
3036                 wpa_supplicant_event_stkstart(wpa_s, data);
3037                 break;
3038 #endif /* CONFIG_PEERKEY */
3039 #ifdef CONFIG_TDLS
3040         case EVENT_TDLS:
3041                 wpa_supplicant_event_tdls(wpa_s, data);
3042                 break;
3043 #endif /* CONFIG_TDLS */
3044 #ifdef CONFIG_WNM
3045         case EVENT_WNM:
3046                 wpa_supplicant_event_wnm(wpa_s, data);
3047                 break;
3048 #endif /* CONFIG_WNM */
3049 #ifdef CONFIG_IEEE80211R
3050         case EVENT_FT_RESPONSE:
3051                 wpa_supplicant_event_ft_response(wpa_s, data);
3052                 break;
3053 #endif /* CONFIG_IEEE80211R */
3054 #ifdef CONFIG_IBSS_RSN
3055         case EVENT_IBSS_RSN_START:
3056                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
3057                 break;
3058 #endif /* CONFIG_IBSS_RSN */
3059         case EVENT_ASSOC_REJECT:
3060                 if (data->assoc_reject.bssid)
3061                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3062                                 "bssid=" MACSTR " status_code=%u",
3063                                 MAC2STR(data->assoc_reject.bssid),
3064                                 data->assoc_reject.status_code);
3065                 else
3066                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
3067                                 "status_code=%u",
3068                                 data->assoc_reject.status_code);
3069                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3070                         sme_event_assoc_reject(wpa_s, data);
3071                 else {
3072                         const u8 *bssid = data->assoc_reject.bssid;
3073                         if (bssid == NULL || is_zero_ether_addr(bssid))
3074                                 bssid = wpa_s->pending_bssid;
3075                         wpas_connection_failed(wpa_s, bssid);
3076                         wpa_supplicant_mark_disassoc(wpa_s);
3077                 }
3078                 break;
3079         case EVENT_AUTH_TIMED_OUT:
3080                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3081                         sme_event_auth_timed_out(wpa_s, data);
3082                 break;
3083         case EVENT_ASSOC_TIMED_OUT:
3084                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
3085                         sme_event_assoc_timed_out(wpa_s, data);
3086                 break;
3087         case EVENT_TX_STATUS:
3088                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
3089                         " type=%d stype=%d",
3090                         MAC2STR(data->tx_status.dst),
3091                         data->tx_status.type, data->tx_status.stype);
3092 #ifdef CONFIG_AP
3093                 if (wpa_s->ap_iface == NULL) {
3094 #ifdef CONFIG_OFFCHANNEL
3095                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3096                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
3097                                 offchannel_send_action_tx_status(
3098                                         wpa_s, data->tx_status.dst,
3099                                         data->tx_status.data,
3100                                         data->tx_status.data_len,
3101                                         data->tx_status.ack ?
3102                                         OFFCHANNEL_SEND_ACTION_SUCCESS :
3103                                         OFFCHANNEL_SEND_ACTION_NO_ACK);
3104 #endif /* CONFIG_OFFCHANNEL */
3105                         break;
3106                 }
3107 #endif /* CONFIG_AP */
3108 #ifdef CONFIG_OFFCHANNEL
3109                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
3110                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
3111                 /*
3112                  * Catch TX status events for Action frames we sent via group
3113                  * interface in GO mode.
3114                  */
3115                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
3116                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
3117                     os_memcmp(wpa_s->parent->pending_action_dst,
3118                               data->tx_status.dst, ETH_ALEN) == 0) {
3119                         offchannel_send_action_tx_status(
3120                                 wpa_s->parent, data->tx_status.dst,
3121                                 data->tx_status.data,
3122                                 data->tx_status.data_len,
3123                                 data->tx_status.ack ?
3124                                 OFFCHANNEL_SEND_ACTION_SUCCESS :
3125                                 OFFCHANNEL_SEND_ACTION_NO_ACK);
3126                         break;
3127                 }
3128 #endif /* CONFIG_OFFCHANNEL */
3129 #ifdef CONFIG_AP
3130                 switch (data->tx_status.type) {
3131                 case WLAN_FC_TYPE_MGMT:
3132                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
3133                                       data->tx_status.data_len,
3134                                       data->tx_status.stype,
3135                                       data->tx_status.ack);
3136                         break;
3137                 case WLAN_FC_TYPE_DATA:
3138                         ap_tx_status(wpa_s, data->tx_status.dst,
3139                                      data->tx_status.data,
3140                                      data->tx_status.data_len,
3141                                      data->tx_status.ack);
3142                         break;
3143                 }
3144 #endif /* CONFIG_AP */
3145                 break;
3146 #ifdef CONFIG_AP
3147         case EVENT_EAPOL_TX_STATUS:
3148                 ap_eapol_tx_status(wpa_s, data->eapol_tx_status.dst,
3149                                    data->eapol_tx_status.data,
3150                                    data->eapol_tx_status.data_len,
3151                                    data->eapol_tx_status.ack);
3152                 break;
3153         case EVENT_DRIVER_CLIENT_POLL_OK:
3154                 ap_client_poll_ok(wpa_s, data->client_poll.addr);
3155                 break;
3156         case EVENT_RX_FROM_UNKNOWN:
3157                 if (wpa_s->ap_iface == NULL)
3158                         break;
3159                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.addr,
3160                                        data->rx_from_unknown.wds);
3161                 break;
3162         case EVENT_CH_SWITCH:
3163                 if (!data)
3164                         break;
3165                 if (!wpa_s->ap_iface) {
3166                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: Ignore channel switch "
3167                                 "event in non-AP mode");
3168                         break;
3169                 }
3170
3171                 wpas_ap_ch_switch(wpa_s, data->ch_switch.freq,
3172                                   data->ch_switch.ht_enabled,
3173                                   data->ch_switch.ch_offset,
3174                                   data->ch_switch.ch_width,
3175                                   data->ch_switch.cf1,
3176                                   data->ch_switch.cf2);
3177                 break;
3178 #endif /* CONFIG_AP */
3179         case EVENT_RX_MGMT: {
3180                 u16 fc, stype;
3181                 const struct ieee80211_mgmt *mgmt;
3182
3183 #ifdef CONFIG_TESTING_OPTIONS
3184                 if (wpa_s->ext_mgmt_frame_handling) {
3185                         struct rx_mgmt *rx = &data->rx_mgmt;
3186                         size_t hex_len = 2 * rx->frame_len + 1;
3187                         char *hex = os_malloc(hex_len);
3188                         if (hex) {
3189                                 wpa_snprintf_hex(hex, hex_len,
3190                                                  rx->frame, rx->frame_len);
3191                                 wpa_msg(wpa_s, MSG_INFO, "MGMT-RX freq=%d datarate=%u ssi_signal=%d %s",
3192                                         rx->freq, rx->datarate, rx->ssi_signal,
3193                                         hex);
3194                                 os_free(hex);
3195                         }
3196                         break;
3197                 }
3198 #endif /* CONFIG_TESTING_OPTIONS */
3199
3200                 mgmt = (const struct ieee80211_mgmt *)
3201                         data->rx_mgmt.frame;
3202                 fc = le_to_host16(mgmt->frame_control);
3203                 stype = WLAN_FC_GET_STYPE(fc);
3204
3205 #ifdef CONFIG_AP
3206                 if (wpa_s->ap_iface == NULL) {
3207 #endif /* CONFIG_AP */
3208 #ifdef CONFIG_P2P
3209                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3210                             data->rx_mgmt.frame_len > 24) {
3211                                 const u8 *src = mgmt->sa;
3212                                 const u8 *ie = mgmt->u.probe_req.variable;
3213                                 size_t ie_len = data->rx_mgmt.frame_len -
3214                                         (mgmt->u.probe_req.variable -
3215                                          data->rx_mgmt.frame);
3216                                 wpas_p2p_probe_req_rx(
3217                                         wpa_s, src, mgmt->da,
3218                                         mgmt->bssid, ie, ie_len,
3219                                         data->rx_mgmt.ssi_signal);
3220                                 break;
3221                         }
3222 #endif /* CONFIG_P2P */
3223 #ifdef CONFIG_IBSS_RSN
3224                         if (stype == WLAN_FC_STYPE_AUTH &&
3225                             data->rx_mgmt.frame_len >= 30) {
3226                                 wpa_supplicant_event_ibss_auth(wpa_s, data);
3227                                 break;
3228                         }
3229 #endif /* CONFIG_IBSS_RSN */
3230
3231                         if (stype == WLAN_FC_STYPE_ACTION) {
3232                                 wpas_event_rx_mgmt_action(
3233                                         wpa_s, mgmt, data->rx_mgmt.frame_len,
3234                                         data->rx_mgmt.freq);
3235                                 break;
3236                         }
3237
3238                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
3239                                 "management frame in non-AP mode");
3240                         break;
3241 #ifdef CONFIG_AP
3242                 }
3243
3244                 if (stype == WLAN_FC_STYPE_PROBE_REQ &&
3245                     data->rx_mgmt.frame_len > 24) {
3246                         const u8 *ie = mgmt->u.probe_req.variable;
3247                         size_t ie_len = data->rx_mgmt.frame_len -
3248                                 (mgmt->u.probe_req.variable -
3249                                  data->rx_mgmt.frame);
3250
3251                         wpas_notify_preq(wpa_s, mgmt->sa, mgmt->da,
3252                                          mgmt->bssid, ie, ie_len,
3253                                          data->rx_mgmt.ssi_signal);
3254                 }
3255
3256                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
3257 #endif /* CONFIG_AP */
3258                 break;
3259                 }
3260         case EVENT_RX_PROBE_REQ:
3261                 if (data->rx_probe_req.sa == NULL ||
3262                     data->rx_probe_req.ie == NULL)
3263                         break;
3264 #ifdef CONFIG_AP
3265                 if (wpa_s->ap_iface) {
3266                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
3267                                              data->rx_probe_req.sa,
3268                                              data->rx_probe_req.da,
3269                                              data->rx_probe_req.bssid,
3270                                              data->rx_probe_req.ie,
3271                                              data->rx_probe_req.ie_len,
3272                                              data->rx_probe_req.ssi_signal);
3273                         break;
3274                 }
3275 #endif /* CONFIG_AP */
3276 #ifdef CONFIG_P2P
3277                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
3278                                       data->rx_probe_req.da,
3279                                       data->rx_probe_req.bssid,
3280                                       data->rx_probe_req.ie,
3281                                       data->rx_probe_req.ie_len,
3282                                       data->rx_probe_req.ssi_signal);
3283 #endif /* CONFIG_P2P */
3284                 break;
3285         case EVENT_REMAIN_ON_CHANNEL:
3286 #ifdef CONFIG_OFFCHANNEL
3287                 offchannel_remain_on_channel_cb(
3288                         wpa_s, data->remain_on_channel.freq,
3289                         data->remain_on_channel.duration);
3290 #endif /* CONFIG_OFFCHANNEL */
3291 #ifdef CONFIG_P2P
3292                 wpas_p2p_remain_on_channel_cb(
3293                         wpa_s, data->remain_on_channel.freq,
3294                         data->remain_on_channel.duration);
3295 #endif /* CONFIG_P2P */
3296                 break;
3297         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
3298 #ifdef CONFIG_OFFCHANNEL
3299                 offchannel_cancel_remain_on_channel_cb(
3300                         wpa_s, data->remain_on_channel.freq);
3301 #endif /* CONFIG_OFFCHANNEL */
3302 #ifdef CONFIG_P2P
3303                 wpas_p2p_cancel_remain_on_channel_cb(
3304                         wpa_s, data->remain_on_channel.freq);
3305 #endif /* CONFIG_P2P */
3306                 break;
3307         case EVENT_EAPOL_RX:
3308                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
3309                                         data->eapol_rx.data,
3310                                         data->eapol_rx.data_len);
3311                 break;
3312         case EVENT_SIGNAL_CHANGE:
3313                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_SIGNAL_CHANGE
3314                         "above=%d signal=%d noise=%d txrate=%d",
3315                         data->signal_change.above_threshold,
3316                         data->signal_change.current_signal,
3317                         data->signal_change.current_noise,
3318                         data->signal_change.current_txrate);
3319                 bgscan_notify_signal_change(
3320                         wpa_s, data->signal_change.above_threshold,
3321                         data->signal_change.current_signal,
3322                         data->signal_change.current_noise,
3323                         data->signal_change.current_txrate);
3324                 break;
3325         case EVENT_INTERFACE_ENABLED:
3326                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
3327                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
3328                         wpa_supplicant_update_mac_addr(wpa_s);
3329                         if (wpa_s->p2p_mgmt) {
3330                                 wpa_supplicant_set_state(wpa_s,
3331                                                          WPA_DISCONNECTED);
3332                                 break;
3333                         }
3334
3335 #ifdef CONFIG_AP
3336                         if (!wpa_s->ap_iface) {
3337                                 wpa_supplicant_set_state(wpa_s,
3338                                                          WPA_DISCONNECTED);
3339                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
3340                         } else
3341                                 wpa_supplicant_set_state(wpa_s,
3342                                                          WPA_COMPLETED);
3343 #else /* CONFIG_AP */
3344                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
3345                         wpa_supplicant_req_scan(wpa_s, 0, 0);
3346 #endif /* CONFIG_AP */
3347                 }
3348                 break;
3349         case EVENT_INTERFACE_DISABLED:
3350                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
3351 #ifdef CONFIG_P2P
3352                 if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
3353                     (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group &&
3354                      wpa_s->current_ssid->mode == WPAS_MODE_P2P_GO)) {
3355                         /*
3356                          * The interface was externally disabled. Remove
3357                          * it assuming an external entity will start a
3358                          * new session if needed.
3359                          */
3360                         wpas_p2p_disconnect(wpa_s);
3361                         break;
3362                 }
3363 #endif /* CONFIG_P2P */
3364
3365                 wpa_supplicant_mark_disassoc(wpa_s);
3366                 radio_remove_works(wpa_s, NULL, 0);
3367
3368                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
3369                 break;
3370         case EVENT_CHANNEL_LIST_CHANGED:
3371                 wpa_supplicant_update_channel_list(
3372                         wpa_s, &data->channel_list_changed);
3373                 break;
3374         case EVENT_INTERFACE_UNAVAILABLE:
3375 #ifdef CONFIG_P2P
3376                 wpas_p2p_interface_unavailable(wpa_s);
3377 #endif /* CONFIG_P2P */
3378                 break;
3379         case EVENT_BEST_CHANNEL:
3380                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
3381                         "(%d %d %d)",
3382                         data->best_chan.freq_24, data->best_chan.freq_5,
3383                         data->best_chan.freq_overall);
3384                 wpa_s->best_24_freq = data->best_chan.freq_24;
3385                 wpa_s->best_5_freq = data->best_chan.freq_5;
3386                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
3387 #ifdef CONFIG_P2P
3388                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
3389                                               data->best_chan.freq_5,
3390                                               data->best_chan.freq_overall);
3391 #endif /* CONFIG_P2P */
3392                 break;
3393         case EVENT_UNPROT_DEAUTH:
3394                 wpa_supplicant_event_unprot_deauth(wpa_s,
3395                                                    &data->unprot_deauth);
3396                 break;
3397         case EVENT_UNPROT_DISASSOC:
3398                 wpa_supplicant_event_unprot_disassoc(wpa_s,
3399                                                      &data->unprot_disassoc);
3400                 break;
3401         case EVENT_STATION_LOW_ACK:
3402 #ifdef CONFIG_AP
3403                 if (wpa_s->ap_iface && data)
3404                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
3405                                                   data->low_ack.addr);
3406 #endif /* CONFIG_AP */
3407 #ifdef CONFIG_TDLS
3408                 if (data)
3409                         wpa_tdls_disable_link(wpa_s->wpa, data->low_ack.addr);
3410 #endif /* CONFIG_TDLS */
3411                 break;
3412         case EVENT_IBSS_PEER_LOST:
3413 #ifdef CONFIG_IBSS_RSN
3414                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
3415 #endif /* CONFIG_IBSS_RSN */
3416                 break;
3417         case EVENT_DRIVER_GTK_REKEY:
3418                 if (os_memcmp(data->driver_gtk_rekey.bssid,
3419                               wpa_s->bssid, ETH_ALEN))
3420                         break;
3421                 if (!wpa_s->wpa)
3422                         break;
3423                 wpa_sm_update_replay_ctr(wpa_s->wpa,
3424                                          data->driver_gtk_rekey.replay_ctr);
3425                 break;
3426         case EVENT_SCHED_SCAN_STOPPED:
3427                 wpa_s->pno = 0;
3428                 wpa_s->sched_scanning = 0;
3429                 wpa_supplicant_notify_scanning(wpa_s, 0);
3430
3431                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
3432                         break;
3433
3434                 /*
3435                  * Start a new sched scan to continue searching for more SSIDs
3436                  * either if timed out or PNO schedule scan is pending.
3437                  */
3438                 if (wpa_s->sched_scan_timed_out) {
3439                         wpa_supplicant_req_sched_scan(wpa_s);
3440                 } else if (wpa_s->pno_sched_pending) {
3441                         wpa_s->pno_sched_pending = 0;
3442                         wpas_start_pno(wpa_s);
3443                 }
3444
3445                 break;
3446         case EVENT_WPS_BUTTON_PUSHED:
3447 #ifdef CONFIG_WPS
3448                 wpas_wps_start_pbc(wpa_s, NULL, 0);
3449 #endif /* CONFIG_WPS */
3450                 break;
3451         case EVENT_AVOID_FREQUENCIES:
3452                 wpa_supplicant_notify_avoid_freq(wpa_s, data);
3453                 break;
3454         case EVENT_CONNECT_FAILED_REASON:
3455 #ifdef CONFIG_AP
3456                 if (!wpa_s->ap_iface || !data)
3457                         break;
3458                 hostapd_event_connect_failed_reason(
3459                         wpa_s->ap_iface->bss[0],
3460                         data->connect_failed_reason.addr,
3461                         data->connect_failed_reason.code);
3462 #endif /* CONFIG_AP */
3463                 break;
3464         default:
3465                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
3466                 break;
3467         }
3468 }