wpa_supplicant/events.c

   1 /*
   2  * WPA Supplicant - Driver event processing
   3  * Copyright (c) 2003-2011, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "common.h"
  18 #include "eapol_supp/eapol_supp_sm.h"
  19 #include "rsn_supp/wpa.h"
  20 #include "eloop.h"
  21 #include "config.h"
  22 #include "l2_packet/l2_packet.h"
  23 #include "wpa_supplicant_i.h"
  24 #include "driver_i.h"
  25 #include "pcsc_funcs.h"
  26 #include "rsn_supp/preauth.h"
  27 #include "rsn_supp/pmksa_cache.h"
  28 #include "common/wpa_ctrl.h"
  29 #include "eap_peer/eap.h"
  30 #include "ap/hostapd.h"
  31 #include "p2p/p2p.h"
  32 #include "notify.h"
  33 #include "common/ieee802_11_defs.h"
  34 #include "common/ieee802_11_common.h"
  35 #include "crypto/random.h"
  36 #include "blacklist.h"
  37 #include "wpas_glue.h"
  38 #include "wps_supplicant.h"
  39 #include "ibss_rsn.h"
  40 #include "sme.h"
  41 #include "p2p_supplicant.h"
  42 #include "bgscan.h"
  43 #include "ap.h"
  44 #include "bss.h"
  45 #include "mlme.h"
  46 #include "scan.h"
  47
  48
  49 static int wpa_supplicant_select_config(struct wpa_supplicant *wpa_s)
  50 {
  51         struct wpa_ssid *ssid, *old_ssid;
  52
  53         if (wpa_s->conf->ap_scan == 1 && wpa_s->current_ssid)
  54                 return 0;
  55
  56         wpa_dbg(wpa_s, MSG_DEBUG, "Select network based on association "
  57                 "information");
  58         ssid = wpa_supplicant_get_ssid(wpa_s);
  59         if (ssid == NULL) {
  60                 wpa_msg(wpa_s, MSG_INFO,
  61                         "No network configuration found for the current AP");
  62                 return -1;
  63         }
  64
  65         if (ssid->disabled) {
  66                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is disabled");
  67                 return -1;
  68         }
  69
  70         wpa_dbg(wpa_s, MSG_DEBUG, "Network configuration found for the "
  71                 "current AP");
  72         if (ssid->key_mgmt & (WPA_KEY_MGMT_PSK | WPA_KEY_MGMT_IEEE8021X |
  73                               WPA_KEY_MGMT_WPA_NONE |
  74                               WPA_KEY_MGMT_FT_PSK | WPA_KEY_MGMT_FT_IEEE8021X |
  75                               WPA_KEY_MGMT_PSK_SHA256 |
  76                               WPA_KEY_MGMT_IEEE8021X_SHA256)) {
  77                 u8 wpa_ie[80];
  78                 size_t wpa_ie_len = sizeof(wpa_ie);
  79                 wpa_supplicant_set_suites(wpa_s, NULL, ssid,
  80                                           wpa_ie, &wpa_ie_len);
  81         } else {
  82                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
  83         }
  84
  85         if (wpa_s->current_ssid && wpa_s->current_ssid != ssid)
  86                 eapol_sm_invalidate_cached_session(wpa_s->eapol);
  87         old_ssid = wpa_s->current_ssid;
  88         wpa_s->current_ssid = ssid;
  89         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
  90         wpa_supplicant_initiate_eapol(wpa_s);
  91         if (old_ssid != wpa_s->current_ssid)
  92                 wpas_notify_network_changed(wpa_s);
  93
  94         return 0;
  95 }
  96
  97
  98 static void wpa_supplicant_stop_countermeasures(void *eloop_ctx,
  99                                                 void *sock_ctx)
 100 {
 101         struct wpa_supplicant *wpa_s = eloop_ctx;
 102
 103         if (wpa_s->countermeasures) {
 104                 wpa_s->countermeasures = 0;
 105                 wpa_drv_set_countermeasures(wpa_s, 0);
 106                 wpa_msg(wpa_s, MSG_INFO, "WPA: TKIP countermeasures stopped");
 107                 wpa_supplicant_req_scan(wpa_s, 0, 0);
 108         }
 109 }
 110
 111
 112 void wpa_supplicant_mark_disassoc(struct wpa_supplicant *wpa_s)
 113 {
 114         int bssid_changed;
 115
 116 #ifdef CONFIG_IBSS_RSN
 117         ibss_rsn_deinit(wpa_s->ibss_rsn);
 118         wpa_s->ibss_rsn = NULL;
 119 #endif /* CONFIG_IBSS_RSN */
 120
 121         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED)
 122                 return;
 123
 124         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 125         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 126         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 127         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 128         wpa_s->current_bss = NULL;
 129         wpa_s->assoc_freq = 0;
 130         if (bssid_changed)
 131                 wpas_notify_bssid_changed(wpa_s);
 132
 133         eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
 134         eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
 135         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt))
 136                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
 137         wpa_s->ap_ies_from_associnfo = 0;
 138 }
 139
 140
 141 static void wpa_find_assoc_pmkid(struct wpa_supplicant *wpa_s)
 142 {
 143         struct wpa_ie_data ie;
 144         int pmksa_set = -1;
 145         size_t i;
 146
 147         if (wpa_sm_parse_own_wpa_ie(wpa_s->wpa, &ie) < 0 ||
 148             ie.pmkid == NULL)
 149                 return;
 150
 151         for (i = 0; i < ie.num_pmkid; i++) {
 152                 pmksa_set = pmksa_cache_set_current(wpa_s->wpa,
 153                                                     ie.pmkid + i * PMKID_LEN,
 154                                                     NULL, NULL, 0);
 155                 if (pmksa_set == 0) {
 156                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 157                         break;
 158                 }
 159         }
 160
 161         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID from assoc IE %sfound from "
 162                 "PMKSA cache", pmksa_set == 0 ? "" : "not ");
 163 }
 164
 165
 166 static void wpa_supplicant_event_pmkid_candidate(struct wpa_supplicant *wpa_s,
 167                                                  union wpa_event_data *data)
 168 {
 169         if (data == NULL) {
 170                 wpa_dbg(wpa_s, MSG_DEBUG, "RSN: No data in PMKID candidate "
 171                         "event");
 172                 return;
 173         }
 174         wpa_dbg(wpa_s, MSG_DEBUG, "RSN: PMKID candidate event - bssid=" MACSTR
 175                 " index=%d preauth=%d",
 176                 MAC2STR(data->pmkid_candidate.bssid),
 177                 data->pmkid_candidate.index,
 178                 data->pmkid_candidate.preauth);
 179
 180         pmksa_candidate_add(wpa_s->wpa, data->pmkid_candidate.bssid,
 181                             data->pmkid_candidate.index,
 182                             data->pmkid_candidate.preauth);
 183 }
 184
 185
 186 static int wpa_supplicant_dynamic_keys(struct wpa_supplicant *wpa_s)
 187 {
 188         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
 189             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE)
 190                 return 0;
 191
 192 #ifdef IEEE8021X_EAPOL
 193         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA &&
 194             wpa_s->current_ssid &&
 195             !(wpa_s->current_ssid->eapol_flags &
 196               (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 197                EAPOL_FLAG_REQUIRE_KEY_BROADCAST))) {
 198                 /* IEEE 802.1X, but not using dynamic WEP keys (i.e., either
 199                  * plaintext or static WEP keys). */
 200                 return 0;
 201         }
 202 #endif /* IEEE8021X_EAPOL */
 203
 204         return 1;
 205 }
 206
 207
 208 /**
 209  * wpa_supplicant_scard_init - Initialize SIM/USIM access with PC/SC
 210  * @wpa_s: pointer to wpa_supplicant data
 211  * @ssid: Configuration data for the network
 212  * Returns: 0 on success, -1 on failure
 213  *
 214  * This function is called when starting authentication with a network that is
 215  * configured to use PC/SC for SIM/USIM access (EAP-SIM or EAP-AKA).
 216  */
 217 int wpa_supplicant_scard_init(struct wpa_supplicant *wpa_s,
 218                               struct wpa_ssid *ssid)
 219 {
 220 #ifdef IEEE8021X_EAPOL
 221         int aka = 0, sim = 0, type;
 222
 223         if (ssid->eap.pcsc == NULL || wpa_s->scard != NULL)
 224                 return 0;
 225
 226         if (ssid->eap.eap_methods == NULL) {
 227                 sim = 1;
 228                 aka = 1;
 229         } else {
 230                 struct eap_method_type *eap = ssid->eap.eap_methods;
 231                 while (eap->vendor != EAP_VENDOR_IETF ||
 232                        eap->method != EAP_TYPE_NONE) {
 233                         if (eap->vendor == EAP_VENDOR_IETF) {
 234                                 if (eap->method == EAP_TYPE_SIM)
 235                                         sim = 1;
 236                                 else if (eap->method == EAP_TYPE_AKA)
 237                                         aka = 1;
 238                         }
 239                         eap++;
 240                 }
 241         }
 242
 243         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_SIM) == NULL)
 244                 sim = 0;
 245         if (eap_peer_get_eap_method(EAP_VENDOR_IETF, EAP_TYPE_AKA) == NULL)
 246                 aka = 0;
 247
 248         if (!sim && !aka) {
 249                 wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to "
 250                         "use SIM, but neither EAP-SIM nor EAP-AKA are "
 251                         "enabled");
 252                 return 0;
 253         }
 254
 255         wpa_dbg(wpa_s, MSG_DEBUG, "Selected network is configured to use SIM "
 256                 "(sim=%d aka=%d) - initialize PCSC", sim, aka);
 257         if (sim && aka)
 258                 type = SCARD_TRY_BOTH;
 259         else if (aka)
 260                 type = SCARD_USIM_ONLY;
 261         else
 262                 type = SCARD_GSM_SIM_ONLY;
 263
 264         wpa_s->scard = scard_init(type);
 265         if (wpa_s->scard == NULL) {
 266                 wpa_msg(wpa_s, MSG_WARNING, "Failed to initialize SIM "
 267                         "(pcsc-lite)");
 268                 return -1;
 269         }
 270         wpa_sm_set_scard_ctx(wpa_s->wpa, wpa_s->scard);
 271         eapol_sm_register_scard_ctx(wpa_s->eapol, wpa_s->scard);
 272 #endif /* IEEE8021X_EAPOL */
 273
 274         return 0;
 275 }
 276
 277
 278 #ifndef CONFIG_NO_SCAN_PROCESSING
 279 static int wpa_supplicant_match_privacy(struct wpa_scan_res *bss,
 280                                         struct wpa_ssid *ssid)
 281 {
 282         int i, privacy = 0;
 283
 284         if (ssid->mixed_cell)
 285                 return 1;
 286
 287 #ifdef CONFIG_WPS
 288         if (ssid->key_mgmt & WPA_KEY_MGMT_WPS)
 289                 return 1;
 290 #endif /* CONFIG_WPS */
 291
 292         for (i = 0; i < NUM_WEP_KEYS; i++) {
 293                 if (ssid->wep_key_len[i]) {
 294                         privacy = 1;
 295                         break;
 296                 }
 297         }
 298 #ifdef IEEE8021X_EAPOL
 299         if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 300             ssid->eapol_flags & (EAPOL_FLAG_REQUIRE_KEY_UNICAST |
 301                                  EAPOL_FLAG_REQUIRE_KEY_BROADCAST))
 302                 privacy = 1;
 303 #endif /* IEEE8021X_EAPOL */
 304
 305         if (bss->caps & IEEE80211_CAP_PRIVACY)
 306                 return privacy;
 307         return !privacy;
 308 }
 309
 310
 311 static int wpa_supplicant_ssid_bss_match(struct wpa_supplicant *wpa_s,
 312                                          struct wpa_ssid *ssid,
 313                                          struct wpa_scan_res *bss)
 314 {
 315         struct wpa_ie_data ie;
 316         int proto_match = 0;
 317         const u8 *rsn_ie, *wpa_ie;
 318         int ret;
 319         int wep_ok;
 320
 321         ret = wpas_wps_ssid_bss_match(wpa_s, ssid, bss);
 322         if (ret >= 0)
 323                 return ret;
 324
 325         /* Allow TSN if local configuration accepts WEP use without WPA/WPA2 */
 326         wep_ok = !wpa_key_mgmt_wpa(ssid->key_mgmt) &&
 327                 (((ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 328                   ssid->wep_key_len[ssid->wep_tx_keyidx] > 0) ||
 329                  (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA));
 330
 331         rsn_ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 332         while ((ssid->proto & WPA_PROTO_RSN) && rsn_ie) {
 333                 proto_match++;
 334
 335                 if (wpa_parse_wpa_ie(rsn_ie, 2 + rsn_ie[1], &ie)) {
 336                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - parse "
 337                                 "failed");
 338                         break;
 339                 }
 340
 341                 if (wep_ok &&
 342                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 343                 {
 344                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 345                                 "in RSN IE");
 346                         return 1;
 347                 }
 348
 349                 if (!(ie.proto & ssid->proto)) {
 350                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - proto "
 351                                 "mismatch");
 352                         break;
 353                 }
 354
 355                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 356                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - PTK "
 357                                 "cipher mismatch");
 358                         break;
 359                 }
 360
 361                 if (!(ie.group_cipher & ssid->group_cipher)) {
 362                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - GTK "
 363                                 "cipher mismatch");
 364                         break;
 365                 }
 366
 367                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 368                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - key mgmt "
 369                                 "mismatch");
 370                         break;
 371                 }
 372
 373 #ifdef CONFIG_IEEE80211W
 374                 if (!(ie.capabilities & WPA_CAPABILITY_MFPC) &&
 375                     ssid->ieee80211w == MGMT_FRAME_PROTECTION_REQUIRED) {
 376                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip RSN IE - no mgmt "
 377                                 "frame protection");
 378                         break;
 379                 }
 380 #endif /* CONFIG_IEEE80211W */
 381
 382                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on RSN IE");
 383                 return 1;
 384         }
 385
 386         wpa_ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 387         while ((ssid->proto & WPA_PROTO_WPA) && wpa_ie) {
 388                 proto_match++;
 389
 390                 if (wpa_parse_wpa_ie(wpa_ie, 2 + wpa_ie[1], &ie)) {
 391                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - parse "
 392                                 "failed");
 393                         break;
 394                 }
 395
 396                 if (wep_ok &&
 397                     (ie.group_cipher & (WPA_CIPHER_WEP40 | WPA_CIPHER_WEP104)))
 398                 {
 399                         wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on TSN "
 400                                 "in WPA IE");
 401                         return 1;
 402                 }
 403
 404                 if (!(ie.proto & ssid->proto)) {
 405                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - proto "
 406                                 "mismatch");
 407                         break;
 408                 }
 409
 410                 if (!(ie.pairwise_cipher & ssid->pairwise_cipher)) {
 411                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - PTK "
 412                                 "cipher mismatch");
 413                         break;
 414                 }
 415
 416                 if (!(ie.group_cipher & ssid->group_cipher)) {
 417                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - GTK "
 418                                 "cipher mismatch");
 419                         break;
 420                 }
 421
 422                 if (!(ie.key_mgmt & ssid->key_mgmt)) {
 423                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip WPA IE - key mgmt "
 424                                 "mismatch");
 425                         break;
 426                 }
 427
 428                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected based on WPA IE");
 429                 return 1;
 430         }
 431
 432         if ((ssid->proto & (WPA_PROTO_WPA | WPA_PROTO_RSN)) &&
 433             wpa_key_mgmt_wpa(ssid->key_mgmt) && proto_match == 0) {
 434                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - no WPA/RSN proto match");
 435                 return 0;
 436         }
 437
 438         if (!wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 439                 wpa_dbg(wpa_s, MSG_DEBUG, "   allow in non-WPA/WPA2");
 440                 return 1;
 441         }
 442
 443         wpa_dbg(wpa_s, MSG_DEBUG, "   reject due to mismatch with "
 444                 "WPA/WPA2");
 445
 446         return 0;
 447 }
 448
 449
 450 static int freq_allowed(int *freqs, int freq)
 451 {
 452         int i;
 453
 454         if (freqs == NULL)
 455                 return 1;
 456
 457         for (i = 0; freqs[i]; i++)
 458                 if (freqs[i] == freq)
 459                         return 1;
 460         return 0;
 461 }
 462
 463
 464 static struct wpa_ssid * wpa_scan_res_match(struct wpa_supplicant *wpa_s,
 465                                             int i, struct wpa_scan_res *bss,
 466                                             struct wpa_ssid *group)
 467 {
 468         const u8 *ssid_;
 469         u8 wpa_ie_len, rsn_ie_len, ssid_len;
 470         int wpa;
 471         struct wpa_blacklist *e;
 472         const u8 *ie;
 473         struct wpa_ssid *ssid;
 474
 475         ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 476         ssid_ = ie ? ie + 2 : (u8 *) "";
 477         ssid_len = ie ? ie[1] : 0;
 478
 479         ie = wpa_scan_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
 480         wpa_ie_len = ie ? ie[1] : 0;
 481
 482         ie = wpa_scan_get_ie(bss, WLAN_EID_RSN);
 483         rsn_ie_len = ie ? ie[1] : 0;
 484
 485         wpa_dbg(wpa_s, MSG_DEBUG, "%d: " MACSTR " ssid='%s' "
 486                 "wpa_ie_len=%u rsn_ie_len=%u caps=0x%x level=%d%s",
 487                 i, MAC2STR(bss->bssid), wpa_ssid_txt(ssid_, ssid_len),
 488                 wpa_ie_len, rsn_ie_len, bss->caps, bss->level,
 489                 wpa_scan_get_vendor_ie(bss, WPS_IE_VENDOR_TYPE) ? " wps" : "");
 490
 491         e = wpa_blacklist_get(wpa_s, bss->bssid);
 492         if (e) {
 493                 int limit = 1;
 494                 if (wpa_supplicant_enabled_networks(wpa_s->conf) == 1) {
 495                         /*
 496                          * When only a single network is enabled, we can
 497                          * trigger blacklisting on the first failure. This
 498                          * should not be done with multiple enabled networks to
 499                          * avoid getting forced to move into a worse ESS on
 500                          * single error if there are no other BSSes of the
 501                          * current ESS.
 502                          */
 503                         limit = 0;
 504                 }
 505                 if (e->count > limit) {
 506                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 507                                 "(count=%d limit=%d)", e->count, limit);
 508                         return NULL;
 509                 }
 510         }
 511
 512         if (ssid_len == 0) {
 513                 wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID not known");
 514                 return NULL;
 515         }
 516
 517         wpa = wpa_ie_len > 0 || rsn_ie_len > 0;
 518
 519         for (ssid = group; ssid; ssid = ssid->pnext) {
 520                 int check_ssid = wpa ? 1 : (ssid->ssid_len != 0);
 521
 522                 if (ssid->disabled) {
 523                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - disabled");
 524                         continue;
 525                 }
 526
 527 #ifdef CONFIG_WPS
 528                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && e && e->count > 0) {
 529                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - blacklisted "
 530                                 "(WPS)");
 531                         continue;
 532                 }
 533
 534                 if (wpa && ssid->ssid_len == 0 &&
 535                     wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 536                         check_ssid = 0;
 537
 538                 if (!wpa && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
 539                         /* Only allow wildcard SSID match if an AP
 540                          * advertises active WPS operation that matches
 541                          * with our mode. */
 542                         check_ssid = 1;
 543                         if (ssid->ssid_len == 0 &&
 544                             wpas_wps_ssid_wildcard_ok(wpa_s, ssid, bss))
 545                                 check_ssid = 0;
 546                 }
 547 #endif /* CONFIG_WPS */
 548
 549                 if (check_ssid &&
 550                     (ssid_len != ssid->ssid_len ||
 551                      os_memcmp(ssid_, ssid->ssid, ssid_len) != 0)) {
 552                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - SSID mismatch");
 553                         continue;
 554                 }
 555
 556                 if (ssid->bssid_set &&
 557                     os_memcmp(bss->bssid, ssid->bssid, ETH_ALEN) != 0) {
 558                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - BSSID mismatch");
 559                         continue;
 560                 }
 561
 562                 if (!wpa_supplicant_ssid_bss_match(wpa_s, ssid, bss))
 563                         continue;
 564
 565                 if (!wpa &&
 566                     !(ssid->key_mgmt & WPA_KEY_MGMT_NONE) &&
 567                     !(ssid->key_mgmt & WPA_KEY_MGMT_WPS) &&
 568                     !(ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA)) {
 569                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - non-WPA network "
 570                                 "not allowed");
 571                         continue;
 572                 }
 573
 574                 if (!wpa && !wpa_supplicant_match_privacy(bss, ssid)) {
 575                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - privacy "
 576                                 "mismatch");
 577                         continue;
 578                 }
 579
 580                 if (!wpa && (bss->caps & IEEE80211_CAP_IBSS)) {
 581                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - IBSS (adhoc) "
 582                                 "network");
 583                         continue;
 584                 }
 585
 586                 if (!freq_allowed(ssid->freq_list, bss->freq)) {
 587                         wpa_dbg(wpa_s, MSG_DEBUG, "   skip - frequency not "
 588                                 "allowed");
 589                         continue;
 590                 }
 591
 592 #ifdef CONFIG_P2P
 593                 /*
 594                  * TODO: skip the AP if its P2P IE has Group Formation
 595                  * bit set in the P2P Group Capability Bitmap and we
 596                  * are not in Group Formation with that device.
 597                  */
 598 #endif /* CONFIG_P2P */
 599
 600                 /* Matching configuration found */
 601                 return ssid;
 602         }
 603
 604         /* No matching configuration found */
 605         return NULL;
 606 }
 607
 608
 609 static struct wpa_bss *
 610 wpa_supplicant_select_bss(struct wpa_supplicant *wpa_s,
 611                           struct wpa_scan_results *scan_res,
 612                           struct wpa_ssid *group,
 613                           struct wpa_ssid **selected_ssid)
 614 {
 615         size_t i;
 616
 617         wpa_dbg(wpa_s, MSG_DEBUG, "Selecting BSS from priority group %d",
 618                 group->priority);
 619
 620         for (i = 0; i < scan_res->num; i++) {
 621                 struct wpa_scan_res *bss = scan_res->res[i];
 622                 const u8 *ie, *ssid;
 623                 u8 ssid_len;
 624
 625                 *selected_ssid = wpa_scan_res_match(wpa_s, i, bss, group);
 626                 if (!*selected_ssid)
 627                         continue;
 628
 629                 ie = wpa_scan_get_ie(bss, WLAN_EID_SSID);
 630                 ssid = ie ? ie + 2 : (u8 *) "";
 631                 ssid_len = ie ? ie[1] : 0;
 632
 633                 wpa_dbg(wpa_s, MSG_DEBUG, "   selected BSS " MACSTR
 634                         " ssid='%s'",
 635                         MAC2STR(bss->bssid), wpa_ssid_txt(ssid, ssid_len));
 636                 return wpa_bss_get(wpa_s, bss->bssid, ssid, ssid_len);
 637         }
 638
 639         return NULL;
 640 }
 641
 642
 643 static struct wpa_bss *
 644 wpa_supplicant_pick_network(struct wpa_supplicant *wpa_s,
 645                             struct wpa_scan_results *scan_res,
 646                             struct wpa_ssid **selected_ssid)
 647 {
 648         struct wpa_bss *selected = NULL;
 649         int prio;
 650
 651         while (selected == NULL) {
 652                 for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 653                         selected = wpa_supplicant_select_bss(
 654                                 wpa_s, scan_res, wpa_s->conf->pssid[prio],
 655                                 selected_ssid);
 656                         if (selected)
 657                                 break;
 658                 }
 659
 660                 if (selected == NULL && wpa_s->blacklist) {
 661                         wpa_dbg(wpa_s, MSG_DEBUG, "No APs found - clear "
 662                                 "blacklist and try again");
 663                         wpa_blacklist_clear(wpa_s);
 664                         wpa_s->blacklist_cleared++;
 665                 } else if (selected == NULL)
 666                         break;
 667         }
 668
 669         return selected;
 670 }
 671
 672
 673 static void wpa_supplicant_req_new_scan(struct wpa_supplicant *wpa_s,
 674                                         int timeout_sec, int timeout_usec)
 675 {
 676         if (!wpa_supplicant_enabled_networks(wpa_s->conf)) {
 677                 /*
 678                  * No networks are enabled; short-circuit request so
 679                  * we don't wait timeout seconds before transitioning
 680                  * to INACTIVE state.
 681                  */
 682                 wpa_supplicant_set_state(wpa_s, WPA_INACTIVE);
 683                 return;
 684         }
 685         wpa_supplicant_req_scan(wpa_s, timeout_sec, timeout_usec);
 686 }
 687
 688
 689 void wpa_supplicant_connect(struct wpa_supplicant *wpa_s,
 690                             struct wpa_bss *selected,
 691                             struct wpa_ssid *ssid)
 692 {
 693         if (wpas_wps_scan_pbc_overlap(wpa_s, selected, ssid)) {
 694                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OVERLAP
 695                         "PBC session overlap");
 696 #ifdef CONFIG_P2P
 697                 if (wpas_p2p_notif_pbc_overlap(wpa_s) == 1)
 698                         return;
 699 #endif /* CONFIG_P2P */
 700
 701 #ifdef CONFIG_WPS
 702                 wpas_wps_cancel(wpa_s);
 703 #endif /* CONFIG_WPS */
 704                 return;
 705         }
 706
 707         /*
 708          * Do not trigger new association unless the BSSID has changed or if
 709          * reassociation is requested. If we are in process of associating with
 710          * the selected BSSID, do not trigger new attempt.
 711          */
 712         if (wpa_s->reassociate ||
 713             (os_memcmp(selected->bssid, wpa_s->bssid, ETH_ALEN) != 0 &&
 714              ((wpa_s->wpa_state != WPA_ASSOCIATING &&
 715                wpa_s->wpa_state != WPA_AUTHENTICATING) ||
 716               os_memcmp(selected->bssid, wpa_s->pending_bssid, ETH_ALEN) !=
 717               0))) {
 718                 if (wpa_supplicant_scard_init(wpa_s, ssid)) {
 719                         wpa_supplicant_req_new_scan(wpa_s, 10, 0);
 720                         return;
 721                 }
 722                 wpa_msg(wpa_s, MSG_DEBUG, "Request association: "
 723                         "reassociate: %d  selected: "MACSTR "  bssid: " MACSTR
 724                         "  pending: " MACSTR "  wpa_state: %s",
 725                         wpa_s->reassociate, MAC2STR(selected->bssid),
 726                         MAC2STR(wpa_s->bssid), MAC2STR(wpa_s->pending_bssid),
 727                         wpa_supplicant_state_txt(wpa_s->wpa_state));
 728                 wpa_supplicant_associate(wpa_s, selected, ssid);
 729         } else {
 730                 wpa_dbg(wpa_s, MSG_DEBUG, "Already associated with the "
 731                         "selected AP");
 732         }
 733 }
 734
 735
 736 static struct wpa_ssid *
 737 wpa_supplicant_pick_new_network(struct wpa_supplicant *wpa_s)
 738 {
 739         int prio;
 740         struct wpa_ssid *ssid;
 741
 742         for (prio = 0; prio < wpa_s->conf->num_prio; prio++) {
 743                 for (ssid = wpa_s->conf->pssid[prio]; ssid; ssid = ssid->pnext)
 744                 {
 745                         if (ssid->disabled)
 746                                 continue;
 747                         if (ssid->mode == IEEE80211_MODE_IBSS ||
 748                             ssid->mode == IEEE80211_MODE_AP)
 749                                 return ssid;
 750                 }
 751         }
 752         return NULL;
 753 }
 754
 755
 756 /* TODO: move the rsn_preauth_scan_result*() to be called from notify.c based
 757  * on BSS added and BSS changed events */
 758 static void wpa_supplicant_rsn_preauth_scan_results(
 759         struct wpa_supplicant *wpa_s, struct wpa_scan_results *scan_res)
 760 {
 761         int i;
 762
 763         if (rsn_preauth_scan_results(wpa_s->wpa) < 0)
 764                 return;
 765
 766         for (i = scan_res->num - 1; i >= 0; i--) {
 767                 const u8 *ssid, *rsn;
 768                 struct wpa_scan_res *r;
 769
 770                 r = scan_res->res[i];
 771
 772                 ssid = wpa_scan_get_ie(r, WLAN_EID_SSID);
 773                 if (ssid == NULL)
 774                         continue;
 775
 776                 rsn = wpa_scan_get_ie(r, WLAN_EID_RSN);
 777                 if (rsn == NULL)
 778                         continue;
 779
 780                 rsn_preauth_scan_result(wpa_s->wpa, r->bssid, ssid, rsn);
 781         }
 782
 783 }
 784
 785
 786 static int wpa_supplicant_need_to_roam(struct wpa_supplicant *wpa_s,
 787                                        struct wpa_bss *selected,
 788                                        struct wpa_ssid *ssid,
 789                                        struct wpa_scan_results *scan_res)
 790 {
 791         size_t i;
 792         struct wpa_scan_res *current_bss = NULL;
 793         int min_diff;
 794
 795         if (wpa_s->reassociate)
 796                 return 1; /* explicit request to reassociate */
 797         if (wpa_s->wpa_state < WPA_ASSOCIATED)
 798                 return 1; /* we are not associated; continue */
 799         if (wpa_s->current_ssid == NULL)
 800                 return 1; /* unknown current SSID */
 801         if (wpa_s->current_ssid != ssid)
 802                 return 1; /* different network block */
 803
 804         for (i = 0; i < scan_res->num; i++) {
 805                 struct wpa_scan_res *res = scan_res->res[i];
 806                 const u8 *ie;
 807                 if (os_memcmp(res->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 808                         continue;
 809
 810                 ie = wpa_scan_get_ie(res, WLAN_EID_SSID);
 811                 if (ie == NULL)
 812                         continue;
 813                 if (ie[1] != wpa_s->current_ssid->ssid_len ||
 814                     os_memcmp(ie + 2, wpa_s->current_ssid->ssid, ie[1]) != 0)
 815                         continue;
 816                 current_bss = res;
 817                 break;
 818         }
 819
 820         if (!current_bss)
 821                 return 1; /* current BSS not seen in scan results */
 822
 823         wpa_dbg(wpa_s, MSG_DEBUG, "Considering within-ESS reassociation");
 824         wpa_dbg(wpa_s, MSG_DEBUG, "Current BSS: " MACSTR " level=%d",
 825                 MAC2STR(current_bss->bssid), current_bss->level);
 826         wpa_dbg(wpa_s, MSG_DEBUG, "Selected BSS: " MACSTR " level=%d",
 827                 MAC2STR(selected->bssid), selected->level);
 828
 829         if (wpa_s->current_ssid->bssid_set &&
 830             os_memcmp(selected->bssid, wpa_s->current_ssid->bssid, ETH_ALEN) ==
 831             0) {
 832                 wpa_dbg(wpa_s, MSG_DEBUG, "Allow reassociation - selected BSS "
 833                         "has preferred BSSID");
 834                 return 1;
 835         }
 836
 837         min_diff = 2;
 838         if (current_bss->level < 0) {
 839                 if (current_bss->level < -85)
 840                         min_diff = 1;
 841                 else if (current_bss->level < -80)
 842                         min_diff = 2;
 843                 else if (current_bss->level < -75)
 844                         min_diff = 3;
 845                 else if (current_bss->level < -70)
 846                         min_diff = 4;
 847                 else
 848                         min_diff = 5;
 849         }
 850         if (abs(current_bss->level - selected->level) < min_diff) {
 851                 wpa_dbg(wpa_s, MSG_DEBUG, "Skip roam - too small difference "
 852                         "in signal level");
 853                 return 0;
 854         }
 855
 856         return 1;
 857 }
 858
 859 /* Return < 0 if no scan results could be fetched. */
 860 static int _wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 861                                               union wpa_event_data *data)
 862 {
 863         struct wpa_bss *selected;
 864         struct wpa_ssid *ssid = NULL;
 865         struct wpa_scan_results *scan_res;
 866         int ap = 0;
 867
 868 #ifdef CONFIG_AP
 869         if (wpa_s->ap_iface)
 870                 ap = 1;
 871 #endif /* CONFIG_AP */
 872
 873         wpa_supplicant_notify_scanning(wpa_s, 0);
 874
 875         scan_res = wpa_supplicant_get_scan_results(wpa_s,
 876                                                    data ? &data->scan_info :
 877                                                    NULL, 1);
 878         if (scan_res == NULL) {
 879                 if (wpa_s->conf->ap_scan == 2 || ap)
 880                         return -1;
 881                 wpa_dbg(wpa_s, MSG_DEBUG, "Failed to get scan results - try "
 882                         "scanning again");
 883                 wpa_supplicant_req_new_scan(wpa_s, 1, 0);
 884                 return -1;
 885         }
 886
 887 #ifndef CONFIG_NO_RANDOM_POOL
 888         size_t i, num;
 889         num = scan_res->num;
 890         if (num > 10)
 891                 num = 10;
 892         for (i = 0; i < num; i++) {
 893                 u8 buf[5];
 894                 struct wpa_scan_res *res = scan_res->res[i];
 895                 buf[0] = res->bssid[5];
 896                 buf[1] = res->qual & 0xff;
 897                 buf[2] = res->noise & 0xff;
 898                 buf[3] = res->level & 0xff;
 899                 buf[4] = res->tsf & 0xff;
 900                 random_add_randomness(buf, sizeof(buf));
 901         }
 902 #endif /* CONFIG_NO_RANDOM_POOL */
 903
 904         if (wpa_s->scan_res_handler) {
 905                 void (*scan_res_handler)(struct wpa_supplicant *wpa_s,
 906                                          struct wpa_scan_results *scan_res);
 907
 908                 scan_res_handler = wpa_s->scan_res_handler;
 909                 wpa_s->scan_res_handler = NULL;
 910                 scan_res_handler(wpa_s, scan_res);
 911
 912                 wpa_scan_results_free(scan_res);
 913                 return 0;
 914         }
 915
 916         if (ap) {
 917                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore scan results in AP mode");
 918 #ifdef CONFIG_AP
 919                 if (wpa_s->ap_iface->scan_cb)
 920                         wpa_s->ap_iface->scan_cb(wpa_s->ap_iface);
 921 #endif /* CONFIG_AP */
 922                 wpa_scan_results_free(scan_res);
 923                 return 0;
 924         }
 925
 926         wpa_dbg(wpa_s, MSG_DEBUG, "New scan results available");
 927         wpa_msg_ctrl(wpa_s, MSG_INFO, WPA_EVENT_SCAN_RESULTS);
 928         wpas_notify_scan_results(wpa_s);
 929
 930         wpas_notify_scan_done(wpa_s, 1);
 931
 932         if ((wpa_s->conf->ap_scan == 2 && !wpas_wps_searching(wpa_s))) {
 933                 wpa_scan_results_free(scan_res);
 934                 return 0;
 935         }
 936
 937         if (wpa_s->disconnected) {
 938                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 939                 wpa_scan_results_free(scan_res);
 940                 return 0;
 941         }
 942
 943         if (bgscan_notify_scan(wpa_s, scan_res) == 1) {
 944                 wpa_scan_results_free(scan_res);
 945                 return 0;
 946         }
 947
 948         wpa_supplicant_rsn_preauth_scan_results(wpa_s, scan_res);
 949
 950         selected = wpa_supplicant_pick_network(wpa_s, scan_res, &ssid);
 951
 952         if (selected) {
 953                 int skip;
 954                 skip = !wpa_supplicant_need_to_roam(wpa_s, selected, ssid,
 955                                                     scan_res);
 956                 wpa_scan_results_free(scan_res);
 957                 if (skip)
 958                         return 0;
 959                 wpa_supplicant_connect(wpa_s, selected, ssid);
 960         } else {
 961                 wpa_scan_results_free(scan_res);
 962                 wpa_dbg(wpa_s, MSG_DEBUG, "No suitable network found");
 963                 ssid = wpa_supplicant_pick_new_network(wpa_s);
 964                 if (ssid) {
 965                         wpa_dbg(wpa_s, MSG_DEBUG, "Setup a new network");
 966                         wpa_supplicant_associate(wpa_s, NULL, ssid);
 967                 } else {
 968                         int timeout_sec = wpa_s->scan_interval;
 969                         int timeout_usec = 0;
 970 #ifdef CONFIG_P2P
 971                         if (wpa_s->p2p_in_provisioning) {
 972                                 /*
 973                                  * Use shorter wait during P2P Provisioning
 974                                  * state to speed up group formation.
 975                                  */
 976                                 timeout_sec = 0;
 977                                 timeout_usec = 250000;
 978                         }
 979 #endif /* CONFIG_P2P */
 980                         wpa_supplicant_req_new_scan(wpa_s, timeout_sec,
 981                                                     timeout_usec);
 982                 }
 983         }
 984         return 0;
 985 }
 986
 987
 988 static void wpa_supplicant_event_scan_results(struct wpa_supplicant *wpa_s,
 989                                               union wpa_event_data *data)
 990 {
 991         const char *rn, *rn2;
 992         struct wpa_supplicant *ifs;
 993
 994         if (_wpa_supplicant_event_scan_results(wpa_s, data) < 0) {
 995                 /*
 996                  * If no scan results could be fetched, then no need to
 997                  * notify those interfaces that did not actually request
 998                  * this scan.
 999                  */
1000                 return;
1001         }
1002
1003         /*
1004          * Check other interfaces to see if they have the same radio-name. If
1005          * so, they get updated with this same scan info.
1006          */
1007         if (!wpa_s->driver->get_radio_name)
1008                 return;
1009
1010         rn = wpa_s->driver->get_radio_name(wpa_s->drv_priv);
1011         if (rn == NULL || rn[0] == '\0')
1012                 return;
1013
1014         wpa_dbg(wpa_s, MSG_DEBUG, "Checking for other virtual interfaces "
1015                 "sharing same radio (%s) in event_scan_results", rn);
1016
1017         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
1018                 if (ifs == wpa_s || !ifs->driver->get_radio_name)
1019                         continue;
1020
1021                 rn2 = ifs->driver->get_radio_name(ifs->drv_priv);
1022                 if (rn2 && os_strcmp(rn, rn2) == 0) {
1023                         wpa_printf(MSG_DEBUG, "%s: Updating scan results from "
1024                                    "sibling", ifs->ifname);
1025                         _wpa_supplicant_event_scan_results(ifs, data);
1026                 }
1027         }
1028 }
1029
1030 #endif /* CONFIG_NO_SCAN_PROCESSING */
1031
1032
1033 static int wpa_supplicant_event_associnfo(struct wpa_supplicant *wpa_s,
1034                                           union wpa_event_data *data)
1035 {
1036         int l, len, found = 0, wpa_found, rsn_found;
1037         const u8 *p;
1038
1039         wpa_dbg(wpa_s, MSG_DEBUG, "Association info event");
1040         if (data->assoc_info.req_ies)
1041                 wpa_hexdump(MSG_DEBUG, "req_ies", data->assoc_info.req_ies,
1042                             data->assoc_info.req_ies_len);
1043         if (data->assoc_info.resp_ies) {
1044                 wpa_hexdump(MSG_DEBUG, "resp_ies", data->assoc_info.resp_ies,
1045                             data->assoc_info.resp_ies_len);
1046 #ifdef CONFIG_TDLS
1047                 wpa_tdls_assoc_resp_ies(wpa_s->wpa, data->assoc_info.resp_ies,
1048                                         data->assoc_info.resp_ies_len);
1049 #endif /* CONFIG_TDLS */
1050         }
1051         if (data->assoc_info.beacon_ies)
1052                 wpa_hexdump(MSG_DEBUG, "beacon_ies",
1053                             data->assoc_info.beacon_ies,
1054                             data->assoc_info.beacon_ies_len);
1055         if (data->assoc_info.freq)
1056                 wpa_dbg(wpa_s, MSG_DEBUG, "freq=%u MHz",
1057                         data->assoc_info.freq);
1058
1059         p = data->assoc_info.req_ies;
1060         l = data->assoc_info.req_ies_len;
1061
1062         /* Go through the IEs and make a copy of the WPA/RSN IE, if present. */
1063         while (p && l >= 2) {
1064                 len = p[1] + 2;
1065                 if (len > l) {
1066                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1067                                     p, l);
1068                         break;
1069                 }
1070                 if ((p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1071                      (os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0)) ||
1072                     (p[0] == WLAN_EID_RSN && p[1] >= 2)) {
1073                         if (wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, p, len))
1074                                 break;
1075                         found = 1;
1076                         wpa_find_assoc_pmkid(wpa_s);
1077                         break;
1078                 }
1079                 l -= len;
1080                 p += len;
1081         }
1082         if (!found && data->assoc_info.req_ies)
1083                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1084
1085 #ifdef CONFIG_IEEE80211R
1086 #ifdef CONFIG_SME
1087         if (wpa_s->sme.auth_alg == WPA_AUTH_ALG_FT) {
1088                 u8 bssid[ETH_ALEN];
1089                 if (wpa_drv_get_bssid(wpa_s, bssid) < 0 ||
1090                     wpa_ft_validate_reassoc_resp(wpa_s->wpa,
1091                                                  data->assoc_info.resp_ies,
1092                                                  data->assoc_info.resp_ies_len,
1093                                                  bssid) < 0) {
1094                         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Validation of "
1095                                 "Reassociation Response failed");
1096                         wpa_supplicant_deauthenticate(
1097                                 wpa_s, WLAN_REASON_INVALID_IE);
1098                         return -1;
1099                 }
1100         }
1101
1102         p = data->assoc_info.resp_ies;
1103         l = data->assoc_info.resp_ies_len;
1104
1105 #ifdef CONFIG_WPS_STRICT
1106         if (wpa_s->current_ssid &&
1107             wpa_s->current_ssid->key_mgmt == WPA_KEY_MGMT_WPS) {
1108                 struct wpabuf *wps;
1109                 wps = ieee802_11_vendor_ie_concat(p, l, WPS_IE_VENDOR_TYPE);
1110                 if (wps == NULL) {
1111                         wpa_msg(wpa_s, MSG_INFO, "WPS-STRICT: AP did not "
1112                                 "include WPS IE in (Re)Association Response");
1113                         return -1;
1114                 }
1115
1116                 if (wps_validate_assoc_resp(wps) < 0) {
1117                         wpabuf_free(wps);
1118                         wpa_supplicant_deauthenticate(
1119                                 wpa_s, WLAN_REASON_INVALID_IE);
1120                         return -1;
1121                 }
1122                 wpabuf_free(wps);
1123         }
1124 #endif /* CONFIG_WPS_STRICT */
1125
1126         /* Go through the IEs and make a copy of the MDIE, if present. */
1127         while (p && l >= 2) {
1128                 len = p[1] + 2;
1129                 if (len > l) {
1130                         wpa_hexdump(MSG_DEBUG, "Truncated IE in assoc_info",
1131                                     p, l);
1132                         break;
1133                 }
1134                 if (p[0] == WLAN_EID_MOBILITY_DOMAIN &&
1135                     p[1] >= MOBILITY_DOMAIN_ID_LEN) {
1136                         wpa_s->sme.ft_used = 1;
1137                         os_memcpy(wpa_s->sme.mobility_domain, p + 2,
1138                                   MOBILITY_DOMAIN_ID_LEN);
1139                         break;
1140                 }
1141                 l -= len;
1142                 p += len;
1143         }
1144 #endif /* CONFIG_SME */
1145
1146         wpa_sm_set_ft_params(wpa_s->wpa, data->assoc_info.resp_ies,
1147                              data->assoc_info.resp_ies_len);
1148 #endif /* CONFIG_IEEE80211R */
1149
1150         /* WPA/RSN IE from Beacon/ProbeResp */
1151         p = data->assoc_info.beacon_ies;
1152         l = data->assoc_info.beacon_ies_len;
1153
1154         /* Go through the IEs and make a copy of the WPA/RSN IEs, if present.
1155          */
1156         wpa_found = rsn_found = 0;
1157         while (p && l >= 2) {
1158                 len = p[1] + 2;
1159                 if (len > l) {
1160                         wpa_hexdump(MSG_DEBUG, "Truncated IE in beacon_ies",
1161                                     p, l);
1162                         break;
1163                 }
1164                 if (!wpa_found &&
1165                     p[0] == WLAN_EID_VENDOR_SPECIFIC && p[1] >= 6 &&
1166                     os_memcmp(&p[2], "\x00\x50\xF2\x01\x01\x00", 6) == 0) {
1167                         wpa_found = 1;
1168                         wpa_sm_set_ap_wpa_ie(wpa_s->wpa, p, len);
1169                 }
1170
1171                 if (!rsn_found &&
1172                     p[0] == WLAN_EID_RSN && p[1] >= 2) {
1173                         rsn_found = 1;
1174                         wpa_sm_set_ap_rsn_ie(wpa_s->wpa, p, len);
1175                 }
1176
1177                 l -= len;
1178                 p += len;
1179         }
1180
1181         if (!wpa_found && data->assoc_info.beacon_ies)
1182                 wpa_sm_set_ap_wpa_ie(wpa_s->wpa, NULL, 0);
1183         if (!rsn_found && data->assoc_info.beacon_ies)
1184                 wpa_sm_set_ap_rsn_ie(wpa_s->wpa, NULL, 0);
1185         if (wpa_found || rsn_found)
1186                 wpa_s->ap_ies_from_associnfo = 1;
1187
1188         wpa_s->assoc_freq = data->assoc_info.freq;
1189
1190         return 0;
1191 }
1192
1193
1194 static void wpa_supplicant_event_assoc(struct wpa_supplicant *wpa_s,
1195                                        union wpa_event_data *data)
1196 {
1197         u8 bssid[ETH_ALEN];
1198         int ft_completed;
1199         int bssid_changed;
1200         struct wpa_driver_capa capa;
1201
1202 #ifdef CONFIG_AP
1203         if (wpa_s->ap_iface) {
1204                 hostapd_notif_assoc(wpa_s->ap_iface->bss[0],
1205                                     data->assoc_info.addr,
1206                                     data->assoc_info.req_ies,
1207                                     data->assoc_info.req_ies_len,
1208                                     data->assoc_info.reassoc);
1209                 return;
1210         }
1211 #endif /* CONFIG_AP */
1212
1213         ft_completed = wpa_ft_is_completed(wpa_s->wpa);
1214         if (data && wpa_supplicant_event_associnfo(wpa_s, data) < 0)
1215                 return;
1216
1217         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATED);
1218         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME)
1219                 os_memcpy(bssid, wpa_s->bssid, ETH_ALEN);
1220         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_USER_SPACE_MLME) ||
1221             (wpa_drv_get_bssid(wpa_s, bssid) >= 0 &&
1222              os_memcmp(bssid, wpa_s->bssid, ETH_ALEN) != 0)) {
1223                 wpa_dbg(wpa_s, MSG_DEBUG, "Associated to a new BSS: BSSID="
1224                         MACSTR, MAC2STR(bssid));
1225                 random_add_randomness(bssid, ETH_ALEN);
1226                 bssid_changed = os_memcmp(wpa_s->bssid, bssid, ETH_ALEN);
1227                 os_memcpy(wpa_s->bssid, bssid, ETH_ALEN);
1228                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1229                 if (bssid_changed)
1230                         wpas_notify_bssid_changed(wpa_s);
1231
1232                 if (wpa_supplicant_dynamic_keys(wpa_s) && !ft_completed) {
1233                         wpa_clear_keys(wpa_s, bssid);
1234                 }
1235                 if (wpa_supplicant_select_config(wpa_s) < 0) {
1236                         wpa_supplicant_disassociate(
1237                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1238                         return;
1239                 }
1240                 if (wpa_s->current_ssid) {
1241                         struct wpa_bss *bss = NULL;
1242                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1243                         if (ssid->ssid_len > 0)
1244                                 bss = wpa_bss_get(wpa_s, bssid,
1245                                                   ssid->ssid, ssid->ssid_len);
1246                         if (!bss)
1247                                 bss = wpa_bss_get_bssid(wpa_s, bssid);
1248                         if (bss)
1249                                 wpa_s->current_bss = bss;
1250                 }
1251         }
1252
1253 #ifdef CONFIG_SME
1254         os_memcpy(wpa_s->sme.prev_bssid, bssid, ETH_ALEN);
1255         wpa_s->sme.prev_bssid_set = 1;
1256 #endif /* CONFIG_SME */
1257
1258         wpa_msg(wpa_s, MSG_INFO, "Associated with " MACSTR, MAC2STR(bssid));
1259         if (wpa_s->current_ssid) {
1260                 /* When using scanning (ap_scan=1), SIM PC/SC interface can be
1261                  * initialized before association, but for other modes,
1262                  * initialize PC/SC here, if the current configuration needs
1263                  * smartcard or SIM/USIM. */
1264                 wpa_supplicant_scard_init(wpa_s, wpa_s->current_ssid);
1265         }
1266         wpa_sm_notify_assoc(wpa_s->wpa, bssid);
1267         if (wpa_s->l2)
1268                 l2_packet_notify_auth_start(wpa_s->l2);
1269
1270         /*
1271          * Set portEnabled first to FALSE in order to get EAP state machine out
1272          * of the SUCCESS state and eapSuccess cleared. Without this, EAPOL PAE
1273          * state machine may transit to AUTHENTICATING state based on obsolete
1274          * eapSuccess and then trigger BE_AUTH to SUCCESS and PAE to
1275          * AUTHENTICATED without ever giving chance to EAP state machine to
1276          * reset the state.
1277          */
1278         if (!ft_completed) {
1279                 eapol_sm_notify_portEnabled(wpa_s->eapol, FALSE);
1280                 eapol_sm_notify_portValid(wpa_s->eapol, FALSE);
1281         }
1282         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) || ft_completed)
1283                 eapol_sm_notify_eap_success(wpa_s->eapol, FALSE);
1284         /* 802.1X::portControl = Auto */
1285         eapol_sm_notify_portEnabled(wpa_s->eapol, TRUE);
1286         wpa_s->eapol_received = 0;
1287         if (wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1288             wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE ||
1289             (wpa_s->current_ssid &&
1290              wpa_s->current_ssid->mode == IEEE80211_MODE_IBSS)) {
1291                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1292                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1293         } else if (!ft_completed) {
1294                 /* Timeout for receiving the first EAPOL packet */
1295                 wpa_supplicant_req_auth_timeout(wpa_s, 10, 0);
1296         }
1297         wpa_supplicant_cancel_scan(wpa_s);
1298
1299         if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1300             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1301                 /*
1302                  * We are done; the driver will take care of RSN 4-way
1303                  * handshake.
1304                  */
1305                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1306                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1307                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1308                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1309         } else if ((wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE) &&
1310                    wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
1311                 /*
1312                  * The driver will take care of RSN 4-way handshake, so we need
1313                  * to allow EAPOL supplicant to complete its work without
1314                  * waiting for WPA supplicant.
1315                  */
1316                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1317         } else if (ft_completed) {
1318                 /*
1319                  * FT protocol completed - make sure EAPOL state machine ends
1320                  * up in authenticated.
1321                  */
1322                 wpa_supplicant_cancel_auth_timeout(wpa_s);
1323                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
1324                 eapol_sm_notify_portValid(wpa_s->eapol, TRUE);
1325                 eapol_sm_notify_eap_success(wpa_s->eapol, TRUE);
1326         }
1327
1328         if (wpa_s->pending_eapol_rx) {
1329                 struct os_time now, age;
1330                 os_get_time(&now);
1331                 os_time_sub(&now, &wpa_s->pending_eapol_rx_time, &age);
1332                 if (age.sec == 0 && age.usec < 100000 &&
1333                     os_memcmp(wpa_s->pending_eapol_rx_src, bssid, ETH_ALEN) ==
1334                     0) {
1335                         wpa_dbg(wpa_s, MSG_DEBUG, "Process pending EAPOL "
1336                                 "frame that was received just before "
1337                                 "association notification");
1338                         wpa_supplicant_rx_eapol(
1339                                 wpa_s, wpa_s->pending_eapol_rx_src,
1340                                 wpabuf_head(wpa_s->pending_eapol_rx),
1341                                 wpabuf_len(wpa_s->pending_eapol_rx));
1342                 }
1343                 wpabuf_free(wpa_s->pending_eapol_rx);
1344                 wpa_s->pending_eapol_rx = NULL;
1345         }
1346
1347         if ((wpa_s->key_mgmt == WPA_KEY_MGMT_NONE ||
1348              wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
1349             wpa_s->current_ssid && wpa_drv_get_capa(wpa_s, &capa) == 0 &&
1350             capa.flags & WPA_DRIVER_FLAGS_SET_KEYS_AFTER_ASSOC_DONE) {
1351                 /* Set static WEP keys again */
1352                 wpa_set_wep_keys(wpa_s, wpa_s->current_ssid);
1353         }
1354
1355 #ifdef CONFIG_IBSS_RSN
1356         if (wpa_s->current_ssid &&
1357             wpa_s->current_ssid->mode == WPAS_MODE_IBSS &&
1358             wpa_s->key_mgmt != WPA_KEY_MGMT_NONE &&
1359             wpa_s->key_mgmt != WPA_KEY_MGMT_WPA_NONE &&
1360             wpa_s->ibss_rsn == NULL) {
1361                 wpa_s->ibss_rsn = ibss_rsn_init(wpa_s);
1362                 if (!wpa_s->ibss_rsn) {
1363                         wpa_msg(wpa_s, MSG_INFO, "Failed to init IBSS RSN");
1364                         wpa_supplicant_deauthenticate(
1365                                 wpa_s, WLAN_REASON_DEAUTH_LEAVING);
1366                         return;
1367                 }
1368
1369                 ibss_rsn_set_psk(wpa_s->ibss_rsn, wpa_s->current_ssid->psk);
1370         }
1371 #endif /* CONFIG_IBSS_RSN */
1372 }
1373
1374
1375 static void wpa_supplicant_event_disassoc(struct wpa_supplicant *wpa_s,
1376                                           u16 reason_code)
1377 {
1378         const u8 *bssid;
1379         int authenticating;
1380         u8 prev_pending_bssid[ETH_ALEN];
1381
1382         authenticating = wpa_s->wpa_state == WPA_AUTHENTICATING;
1383         os_memcpy(prev_pending_bssid, wpa_s->pending_bssid, ETH_ALEN);
1384
1385         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPA_NONE) {
1386                 /*
1387                  * At least Host AP driver and a Prism3 card seemed to be
1388                  * generating streams of disconnected events when configuring
1389                  * IBSS for WPA-None. Ignore them for now.
1390                  */
1391                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - ignore in "
1392                         "IBSS/WPA-None mode");
1393                 return;
1394         }
1395
1396         if (wpa_s->wpa_state == WPA_4WAY_HANDSHAKE &&
1397             wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt)) {
1398                 wpa_msg(wpa_s, MSG_INFO, "WPA: 4-Way Handshake failed - "
1399                         "pre-shared key may be incorrect");
1400         }
1401         if (!wpa_s->auto_reconnect_disabled ||
1402             wpa_s->key_mgmt == WPA_KEY_MGMT_WPS) {
1403                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect enabled: try to "
1404                         "reconnect (wps=%d)",
1405                         wpa_s->key_mgmt == WPA_KEY_MGMT_WPS);
1406                 if (wpa_s->wpa_state >= WPA_ASSOCIATING)
1407                         wpa_supplicant_req_scan(wpa_s, 0, 100000);
1408         } else {
1409                 wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Auto connect disabled: do not "
1410                         "try to re-connect");
1411                 wpa_s->reassociate = 0;
1412                 wpa_s->disconnected = 1;
1413         }
1414         bssid = wpa_s->bssid;
1415         if (is_zero_ether_addr(bssid))
1416                 bssid = wpa_s->pending_bssid;
1417         wpas_connection_failed(wpa_s, bssid);
1418         wpa_sm_notify_disassoc(wpa_s->wpa);
1419         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" MACSTR
1420                 " reason=%d",
1421                 MAC2STR(bssid), reason_code);
1422         if (wpa_supplicant_dynamic_keys(wpa_s)) {
1423                 wpa_dbg(wpa_s, MSG_DEBUG, "Disconnect event - remove keys");
1424                 wpa_s->keys_cleared = 0;
1425                 wpa_clear_keys(wpa_s, wpa_s->bssid);
1426         }
1427         wpa_supplicant_mark_disassoc(wpa_s);
1428
1429         if (authenticating && (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1430                 sme_disassoc_while_authenticating(wpa_s, prev_pending_bssid);
1431 }
1432
1433
1434 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1435 static void wpa_supplicant_delayed_mic_error_report(void *eloop_ctx,
1436                                                     void *sock_ctx)
1437 {
1438         struct wpa_supplicant *wpa_s = eloop_ctx;
1439
1440         if (!wpa_s->pending_mic_error_report)
1441                 return;
1442
1443         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Sending pending MIC error report");
1444         wpa_sm_key_request(wpa_s->wpa, 1, wpa_s->pending_mic_error_pairwise);
1445         wpa_s->pending_mic_error_report = 0;
1446 }
1447 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1448
1449
1450 static void
1451 wpa_supplicant_event_michael_mic_failure(struct wpa_supplicant *wpa_s,
1452                                          union wpa_event_data *data)
1453 {
1454         int pairwise;
1455         struct os_time t;
1456
1457         wpa_msg(wpa_s, MSG_WARNING, "Michael MIC failure detected");
1458         pairwise = (data && data->michael_mic_failure.unicast);
1459         os_get_time(&t);
1460         if ((wpa_s->last_michael_mic_error &&
1461              t.sec - wpa_s->last_michael_mic_error <= 60) ||
1462             wpa_s->pending_mic_error_report) {
1463                 if (wpa_s->pending_mic_error_report) {
1464                         /*
1465                          * Send the pending MIC error report immediately since
1466                          * we are going to start countermeasures and AP better
1467                          * do the same.
1468                          */
1469                         wpa_sm_key_request(wpa_s->wpa, 1,
1470                                            wpa_s->pending_mic_error_pairwise);
1471                 }
1472
1473                 /* Send the new MIC error report immediately since we are going
1474                  * to start countermeasures and AP better do the same.
1475                  */
1476                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1477
1478                 /* initialize countermeasures */
1479                 wpa_s->countermeasures = 1;
1480                 wpa_msg(wpa_s, MSG_WARNING, "TKIP countermeasures started");
1481
1482                 /*
1483                  * Need to wait for completion of request frame. We do not get
1484                  * any callback for the message completion, so just wait a
1485                  * short while and hope for the best. */
1486                 os_sleep(0, 10000);
1487
1488                 wpa_drv_set_countermeasures(wpa_s, 1);
1489                 wpa_supplicant_deauthenticate(wpa_s,
1490                                               WLAN_REASON_MICHAEL_MIC_FAILURE);
1491                 eloop_cancel_timeout(wpa_supplicant_stop_countermeasures,
1492                                      wpa_s, NULL);
1493                 eloop_register_timeout(60, 0,
1494                                        wpa_supplicant_stop_countermeasures,
1495                                        wpa_s, NULL);
1496                 /* TODO: mark the AP rejected for 60 second. STA is
1497                  * allowed to associate with another AP.. */
1498         } else {
1499 #ifdef CONFIG_DELAYED_MIC_ERROR_REPORT
1500                 if (wpa_s->mic_errors_seen) {
1501                         /*
1502                          * Reduce the effectiveness of Michael MIC error
1503                          * reports as a means for attacking against TKIP if
1504                          * more than one MIC failure is noticed with the same
1505                          * PTK. We delay the transmission of the reports by a
1506                          * random time between 0 and 60 seconds in order to
1507                          * force the attacker wait 60 seconds before getting
1508                          * the information on whether a frame resulted in a MIC
1509                          * failure.
1510                          */
1511                         u8 rval[4];
1512                         int sec;
1513
1514                         if (os_get_random(rval, sizeof(rval)) < 0)
1515                                 sec = os_random() % 60;
1516                         else
1517                                 sec = WPA_GET_BE32(rval) % 60;
1518                         wpa_dbg(wpa_s, MSG_DEBUG, "WPA: Delay MIC error "
1519                                 "report %d seconds", sec);
1520                         wpa_s->pending_mic_error_report = 1;
1521                         wpa_s->pending_mic_error_pairwise = pairwise;
1522                         eloop_cancel_timeout(
1523                                 wpa_supplicant_delayed_mic_error_report,
1524                                 wpa_s, NULL);
1525                         eloop_register_timeout(
1526                                 sec, os_random() % 1000000,
1527                                 wpa_supplicant_delayed_mic_error_report,
1528                                 wpa_s, NULL);
1529                 } else {
1530                         wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1531                 }
1532 #else /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1533                 wpa_sm_key_request(wpa_s->wpa, 1, pairwise);
1534 #endif /* CONFIG_DELAYED_MIC_ERROR_REPORT */
1535         }
1536         wpa_s->last_michael_mic_error = t.sec;
1537         wpa_s->mic_errors_seen++;
1538 }
1539
1540
1541 #ifdef CONFIG_TERMINATE_ONLASTIF
1542 static int any_interfaces(struct wpa_supplicant *head)
1543 {
1544         struct wpa_supplicant *wpa_s;
1545
1546         for (wpa_s = head; wpa_s != NULL; wpa_s = wpa_s->next)
1547                 if (!wpa_s->interface_removed)
1548                         return 1;
1549         return 0;
1550 }
1551 #endif /* CONFIG_TERMINATE_ONLASTIF */
1552
1553
1554 static void
1555 wpa_supplicant_event_interface_status(struct wpa_supplicant *wpa_s,
1556                                       union wpa_event_data *data)
1557 {
1558         if (os_strcmp(wpa_s->ifname, data->interface_status.ifname) != 0)
1559                 return;
1560
1561         switch (data->interface_status.ievent) {
1562         case EVENT_INTERFACE_ADDED:
1563                 if (!wpa_s->interface_removed)
1564                         break;
1565                 wpa_s->interface_removed = 0;
1566                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was added");
1567                 if (wpa_supplicant_driver_init(wpa_s) < 0) {
1568                         wpa_msg(wpa_s, MSG_INFO, "Failed to initialize the "
1569                                 "driver after interface was added");
1570                 }
1571                 break;
1572         case EVENT_INTERFACE_REMOVED:
1573                 wpa_dbg(wpa_s, MSG_DEBUG, "Configured interface was removed");
1574                 wpa_s->interface_removed = 1;
1575                 wpa_supplicant_mark_disassoc(wpa_s);
1576                 l2_packet_deinit(wpa_s->l2);
1577                 wpa_s->l2 = NULL;
1578 #ifdef CONFIG_IBSS_RSN
1579                 ibss_rsn_deinit(wpa_s->ibss_rsn);
1580                 wpa_s->ibss_rsn = NULL;
1581 #endif /* CONFIG_IBSS_RSN */
1582 #ifdef CONFIG_TERMINATE_ONLASTIF
1583                 /* check if last interface */
1584                 if (!any_interfaces(wpa_s->global->ifaces))
1585                         eloop_terminate();
1586 #endif /* CONFIG_TERMINATE_ONLASTIF */
1587                 break;
1588         }
1589 }
1590
1591
1592 #ifdef CONFIG_PEERKEY
1593 static void
1594 wpa_supplicant_event_stkstart(struct wpa_supplicant *wpa_s,
1595                               union wpa_event_data *data)
1596 {
1597         if (data == NULL)
1598                 return;
1599         wpa_sm_stkstart(wpa_s->wpa, data->stkstart.peer);
1600 }
1601 #endif /* CONFIG_PEERKEY */
1602
1603
1604 #ifdef CONFIG_TDLS
1605 static void wpa_supplicant_event_tdls(struct wpa_supplicant *wpa_s,
1606                                       union wpa_event_data *data)
1607 {
1608         if (data == NULL)
1609                 return;
1610         switch (data->tdls.oper) {
1611         case TDLS_REQUEST_SETUP:
1612                 wpa_tdls_start(wpa_s->wpa, data->tdls.peer);
1613                 break;
1614         case TDLS_REQUEST_TEARDOWN:
1615                 /* request from driver to add FTIE */
1616                 wpa_tdls_recv_teardown_notify(wpa_s->wpa, data->tdls.peer,
1617                                               data->tdls.reason_code);
1618                 break;
1619         }
1620 }
1621 #endif /* CONFIG_TDLS */
1622
1623
1624 #ifdef CONFIG_IEEE80211R
1625 static void
1626 wpa_supplicant_event_ft_response(struct wpa_supplicant *wpa_s,
1627                                  union wpa_event_data *data)
1628 {
1629         if (data == NULL)
1630                 return;
1631
1632         if (wpa_ft_process_response(wpa_s->wpa, data->ft_ies.ies,
1633                                     data->ft_ies.ies_len,
1634                                     data->ft_ies.ft_action,
1635                                     data->ft_ies.target_ap,
1636                                     data->ft_ies.ric_ies,
1637                                     data->ft_ies.ric_ies_len) < 0) {
1638                 /* TODO: prevent MLME/driver from trying to associate? */
1639         }
1640 }
1641 #endif /* CONFIG_IEEE80211R */
1642
1643
1644 #ifdef CONFIG_IBSS_RSN
1645 static void wpa_supplicant_event_ibss_rsn_start(struct wpa_supplicant *wpa_s,
1646                                                 union wpa_event_data *data)
1647 {
1648         struct wpa_ssid *ssid;
1649         if (wpa_s->wpa_state < WPA_ASSOCIATED)
1650                 return;
1651         if (data == NULL)
1652                 return;
1653         ssid = wpa_s->current_ssid;
1654         if (ssid == NULL)
1655                 return;
1656         if (ssid->mode != WPAS_MODE_IBSS || !wpa_key_mgmt_wpa(ssid->key_mgmt))
1657                 return;
1658
1659         ibss_rsn_start(wpa_s->ibss_rsn, data->ibss_rsn_start.peer);
1660 }
1661 #endif /* CONFIG_IBSS_RSN */
1662
1663
1664 #ifdef CONFIG_IEEE80211R
1665 static void ft_rx_action(struct wpa_supplicant *wpa_s, const u8 *data,
1666                          size_t len)
1667 {
1668         const u8 *sta_addr, *target_ap_addr;
1669         u16 status;
1670
1671         wpa_hexdump(MSG_MSGDUMP, "FT: RX Action", data, len);
1672         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
1673                 return; /* only SME case supported for now */
1674         if (len < 1 + 2 * ETH_ALEN + 2)
1675                 return;
1676         if (data[0] != 2)
1677                 return; /* Only FT Action Response is supported for now */
1678         sta_addr = data + 1;
1679         target_ap_addr = data + 1 + ETH_ALEN;
1680         status = WPA_GET_LE16(data + 1 + 2 * ETH_ALEN);
1681         wpa_dbg(wpa_s, MSG_DEBUG, "FT: Received FT Action Response: STA "
1682                 MACSTR " TargetAP " MACSTR " status %u",
1683                 MAC2STR(sta_addr), MAC2STR(target_ap_addr), status);
1684
1685         if (os_memcmp(sta_addr, wpa_s->own_addr, ETH_ALEN) != 0) {
1686                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: Foreign STA Address " MACSTR
1687                         " in FT Action Response", MAC2STR(sta_addr));
1688                 return;
1689         }
1690
1691         if (status) {
1692                 wpa_dbg(wpa_s, MSG_DEBUG, "FT: FT Action Response indicates "
1693                         "failure (status code %d)", status);
1694                 /* TODO: report error to FT code(?) */
1695                 return;
1696         }
1697
1698         if (wpa_ft_process_response(wpa_s->wpa, data + 1 + 2 * ETH_ALEN + 2,
1699                                     len - (1 + 2 * ETH_ALEN + 2), 1,
1700                                     target_ap_addr, NULL, 0) < 0)
1701                 return;
1702
1703 #ifdef CONFIG_SME
1704         {
1705                 struct wpa_bss *bss;
1706                 bss = wpa_bss_get_bssid(wpa_s, target_ap_addr);
1707                 if (bss)
1708                         wpa_s->sme.freq = bss->freq;
1709                 wpa_s->sme.auth_alg = WPA_AUTH_ALG_FT;
1710                 sme_associate(wpa_s, WPAS_MODE_INFRA, target_ap_addr,
1711                               WLAN_AUTH_FT);
1712         }
1713 #endif /* CONFIG_SME */
1714 }
1715 #endif /* CONFIG_IEEE80211R */
1716
1717
1718 static void wpa_supplicant_event_unprot_deauth(struct wpa_supplicant *wpa_s,
1719                                                struct unprot_deauth *e)
1720 {
1721 #ifdef CONFIG_IEEE80211W
1722         wpa_printf(MSG_DEBUG, "Unprotected Deauthentication frame "
1723                    "dropped: " MACSTR " -> " MACSTR
1724                    " (reason code %u)",
1725                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1726         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1727 #endif /* CONFIG_IEEE80211W */
1728 }
1729
1730
1731 static void wpa_supplicant_event_unprot_disassoc(struct wpa_supplicant *wpa_s,
1732                                                  struct unprot_disassoc *e)
1733 {
1734 #ifdef CONFIG_IEEE80211W
1735         wpa_printf(MSG_DEBUG, "Unprotected Disassociation frame "
1736                    "dropped: " MACSTR " -> " MACSTR
1737                    " (reason code %u)",
1738                    MAC2STR(e->sa), MAC2STR(e->da), e->reason_code);
1739         sme_event_unprot_disconnect(wpa_s, e->sa, e->da, e->reason_code);
1740 #endif /* CONFIG_IEEE80211W */
1741 }
1742
1743
1744 void wpa_supplicant_event(void *ctx, enum wpa_event_type event,
1745                           union wpa_event_data *data)
1746 {
1747         struct wpa_supplicant *wpa_s = ctx;
1748         u16 reason_code = 0;
1749
1750         if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED &&
1751             event != EVENT_INTERFACE_ENABLED &&
1752             event != EVENT_INTERFACE_STATUS) {
1753                 wpa_dbg(wpa_s, MSG_DEBUG, "Ignore event %d while interface is "
1754                         "disabled", event);
1755                 return;
1756         }
1757
1758         wpa_dbg(wpa_s, MSG_DEBUG, "Event %d received on interface %s",
1759                 event, wpa_s->ifname);
1760
1761         switch (event) {
1762         case EVENT_AUTH:
1763                 sme_event_auth(wpa_s, data);
1764                 break;
1765         case EVENT_ASSOC:
1766                 wpa_supplicant_event_assoc(wpa_s, data);
1767                 break;
1768         case EVENT_DISASSOC:
1769                 wpa_dbg(wpa_s, MSG_DEBUG, "Disassociation notification");
1770                 if (data) {
1771                         wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1772                                 data->disassoc_info.reason_code);
1773                         if (data->disassoc_info.addr)
1774                                 wpa_dbg(wpa_s, MSG_DEBUG, " * address " MACSTR,
1775                                         MAC2STR(data->disassoc_info.addr));
1776                 }
1777 #ifdef CONFIG_AP
1778                 if (wpa_s->ap_iface && data && data->disassoc_info.addr) {
1779                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1780                                                data->disassoc_info.addr);
1781                         break;
1782                 }
1783 #endif /* CONFIG_AP */
1784                 if (data) {
1785                         reason_code = data->disassoc_info.reason_code;
1786                         wpa_hexdump(MSG_DEBUG, "Disassociation frame IE(s)",
1787                                     data->disassoc_info.ie,
1788                                     data->disassoc_info.ie_len);
1789 #ifdef CONFIG_P2P
1790                         wpas_p2p_disassoc_notif(
1791                                 wpa_s, data->disassoc_info.addr, reason_code,
1792                                 data->disassoc_info.ie,
1793                                 data->disassoc_info.ie_len);
1794 #endif /* CONFIG_P2P */
1795                 }
1796                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1797                         sme_event_disassoc(wpa_s, data);
1798                 /* fall through */
1799         case EVENT_DEAUTH:
1800                 if (event == EVENT_DEAUTH) {
1801                         wpa_dbg(wpa_s, MSG_DEBUG,
1802                                 "Deauthentication notification");
1803                         if (data) {
1804                                 reason_code = data->deauth_info.reason_code;
1805                                 wpa_dbg(wpa_s, MSG_DEBUG, " * reason %u",
1806                                         data->deauth_info.reason_code);
1807                                 if (data->deauth_info.addr) {
1808                                         wpa_dbg(wpa_s, MSG_DEBUG, " * address "
1809                                                 MACSTR,
1810                                                 MAC2STR(data->deauth_info.
1811                                                         addr));
1812                                 }
1813                                 wpa_hexdump(MSG_DEBUG,
1814                                             "Deauthentication frame IE(s)",
1815                                             data->deauth_info.ie,
1816                                             data->deauth_info.ie_len);
1817 #ifdef CONFIG_P2P
1818                                 wpas_p2p_deauth_notif(
1819                                         wpa_s, data->deauth_info.addr,
1820                                         reason_code,
1821                                         data->deauth_info.ie,
1822                                         data->deauth_info.ie_len);
1823 #endif /* CONFIG_P2P */
1824                         }
1825                 }
1826 #ifdef CONFIG_AP
1827                 if (wpa_s->ap_iface && data && data->deauth_info.addr) {
1828                         hostapd_notif_disassoc(wpa_s->ap_iface->bss[0],
1829                                                data->deauth_info.addr);
1830                         break;
1831                 }
1832 #endif /* CONFIG_AP */
1833                 wpa_supplicant_event_disassoc(wpa_s, reason_code);
1834                 break;
1835         case EVENT_MICHAEL_MIC_FAILURE:
1836                 wpa_supplicant_event_michael_mic_failure(wpa_s, data);
1837                 break;
1838 #ifndef CONFIG_NO_SCAN_PROCESSING
1839         case EVENT_SCAN_RESULTS:
1840                 wpa_supplicant_event_scan_results(wpa_s, data);
1841                 break;
1842 #endif /* CONFIG_NO_SCAN_PROCESSING */
1843         case EVENT_ASSOCINFO:
1844                 wpa_supplicant_event_associnfo(wpa_s, data);
1845                 break;
1846         case EVENT_INTERFACE_STATUS:
1847                 wpa_supplicant_event_interface_status(wpa_s, data);
1848                 break;
1849         case EVENT_PMKID_CANDIDATE:
1850                 wpa_supplicant_event_pmkid_candidate(wpa_s, data);
1851                 break;
1852 #ifdef CONFIG_PEERKEY
1853         case EVENT_STKSTART:
1854                 wpa_supplicant_event_stkstart(wpa_s, data);
1855                 break;
1856 #endif /* CONFIG_PEERKEY */
1857 #ifdef CONFIG_TDLS
1858         case EVENT_TDLS:
1859                 wpa_supplicant_event_tdls(wpa_s, data);
1860                 break;
1861 #endif /* CONFIG_TDLS */
1862 #ifdef CONFIG_IEEE80211R
1863         case EVENT_FT_RESPONSE:
1864                 wpa_supplicant_event_ft_response(wpa_s, data);
1865                 break;
1866 #endif /* CONFIG_IEEE80211R */
1867 #ifdef CONFIG_IBSS_RSN
1868         case EVENT_IBSS_RSN_START:
1869                 wpa_supplicant_event_ibss_rsn_start(wpa_s, data);
1870                 break;
1871 #endif /* CONFIG_IBSS_RSN */
1872         case EVENT_ASSOC_REJECT:
1873                 if (data->assoc_reject.bssid)
1874                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1875                                 "bssid=" MACSTR " status_code=%u",
1876                                 MAC2STR(data->assoc_reject.bssid),
1877                                 data->assoc_reject.status_code);
1878                 else
1879                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_ASSOC_REJECT
1880                                 "status_code=%u",
1881                                 data->assoc_reject.status_code);
1882                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1883                         sme_event_assoc_reject(wpa_s, data);
1884                 break;
1885         case EVENT_AUTH_TIMED_OUT:
1886                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1887                         sme_event_auth_timed_out(wpa_s, data);
1888                 break;
1889         case EVENT_ASSOC_TIMED_OUT:
1890                 if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
1891                         sme_event_assoc_timed_out(wpa_s, data);
1892                 break;
1893 #ifdef CONFIG_AP
1894         case EVENT_TX_STATUS:
1895                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS dst=" MACSTR
1896                         " type=%d stype=%d",
1897                         MAC2STR(data->tx_status.dst),
1898                         data->tx_status.type, data->tx_status.stype);
1899                 if (wpa_s->ap_iface == NULL) {
1900 #ifdef CONFIG_P2P
1901                         if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1902                             data->tx_status.stype == WLAN_FC_STYPE_ACTION)
1903                                 wpas_send_action_tx_status(
1904                                         wpa_s, data->tx_status.dst,
1905                                         data->tx_status.data,
1906                                         data->tx_status.data_len,
1907                                         data->tx_status.ack ?
1908                                         P2P_SEND_ACTION_SUCCESS :
1909                                         P2P_SEND_ACTION_NO_ACK);
1910 #endif /* CONFIG_P2P */
1911                         break;
1912                 }
1913 #ifdef CONFIG_P2P
1914                 wpa_dbg(wpa_s, MSG_DEBUG, "EVENT_TX_STATUS pending_dst="
1915                         MACSTR, MAC2STR(wpa_s->parent->pending_action_dst));
1916                 /*
1917                  * Catch TX status events for Action frames we sent via group
1918                  * interface in GO mode.
1919                  */
1920                 if (data->tx_status.type == WLAN_FC_TYPE_MGMT &&
1921                     data->tx_status.stype == WLAN_FC_STYPE_ACTION &&
1922                     os_memcmp(wpa_s->parent->pending_action_dst,
1923                               data->tx_status.dst, ETH_ALEN) == 0) {
1924                         wpas_send_action_tx_status(
1925                                 wpa_s->parent, data->tx_status.dst,
1926                                 data->tx_status.data,
1927                                 data->tx_status.data_len,
1928                                 data->tx_status.ack ?
1929                                 P2P_SEND_ACTION_SUCCESS :
1930                                 P2P_SEND_ACTION_NO_ACK);
1931                         break;
1932                 }
1933 #endif /* CONFIG_P2P */
1934                 switch (data->tx_status.type) {
1935                 case WLAN_FC_TYPE_MGMT:
1936                         ap_mgmt_tx_cb(wpa_s, data->tx_status.data,
1937                                       data->tx_status.data_len,
1938                                       data->tx_status.stype,
1939                                       data->tx_status.ack);
1940                         break;
1941                 case WLAN_FC_TYPE_DATA:
1942                         ap_tx_status(wpa_s, data->tx_status.dst,
1943                                      data->tx_status.data,
1944                                      data->tx_status.data_len,
1945                                      data->tx_status.ack);
1946                         break;
1947                 }
1948                 break;
1949         case EVENT_RX_FROM_UNKNOWN:
1950                 if (wpa_s->ap_iface == NULL)
1951                         break;
1952                 ap_rx_from_unknown_sta(wpa_s, data->rx_from_unknown.frame,
1953                                        data->rx_from_unknown.len);
1954                 break;
1955         case EVENT_RX_MGMT:
1956                 if (wpa_s->ap_iface == NULL) {
1957 #ifdef CONFIG_P2P
1958                         u16 fc, stype;
1959                         const struct ieee80211_mgmt *mgmt;
1960                         mgmt = (const struct ieee80211_mgmt *)
1961                                 data->rx_mgmt.frame;
1962                         fc = le_to_host16(mgmt->frame_control);
1963                         stype = WLAN_FC_GET_STYPE(fc);
1964                         if (stype == WLAN_FC_STYPE_PROBE_REQ &&
1965                             data->rx_mgmt.frame_len > 24) {
1966                                 const u8 *src = mgmt->sa;
1967                                 const u8 *ie = mgmt->u.probe_req.variable;
1968                                 size_t ie_len = data->rx_mgmt.frame_len -
1969                                         (mgmt->u.probe_req.variable -
1970                                          data->rx_mgmt.frame);
1971                                 wpas_p2p_probe_req_rx(wpa_s, src, ie, ie_len);
1972                                 break;
1973                         }
1974 #endif /* CONFIG_P2P */
1975                         wpa_dbg(wpa_s, MSG_DEBUG, "AP: ignore received "
1976                                 "management frame in non-AP mode");
1977                         break;
1978                 }
1979                 ap_mgmt_rx(wpa_s, &data->rx_mgmt);
1980                 break;
1981 #endif /* CONFIG_AP */
1982         case EVENT_RX_ACTION:
1983                 wpa_dbg(wpa_s, MSG_DEBUG, "Received Action frame: SA=" MACSTR
1984                         " Category=%u DataLen=%d freq=%d MHz",
1985                         MAC2STR(data->rx_action.sa),
1986                         data->rx_action.category, (int) data->rx_action.len,
1987                         data->rx_action.freq);
1988 #ifdef CONFIG_IEEE80211R
1989                 if (data->rx_action.category == WLAN_ACTION_FT) {
1990                         ft_rx_action(wpa_s, data->rx_action.data,
1991                                      data->rx_action.len);
1992                         break;
1993                 }
1994 #endif /* CONFIG_IEEE80211R */
1995 #ifdef CONFIG_IEEE80211W
1996 #ifdef CONFIG_SME
1997                 if (data->rx_action.category == WLAN_ACTION_SA_QUERY) {
1998                         sme_sa_query_rx(wpa_s, data->rx_action.sa,
1999                                         data->rx_action.data,
2000                                         data->rx_action.len);
2001                         break;
2002                 }
2003 #endif /* CONFIG_SME */
2004 #endif /* CONFIG_IEEE80211W */
2005 #ifdef CONFIG_P2P
2006                 wpas_p2p_rx_action(wpa_s, data->rx_action.da,
2007                                    data->rx_action.sa,
2008                                    data->rx_action.bssid,
2009                                    data->rx_action.category,
2010                                    data->rx_action.data,
2011                                    data->rx_action.len, data->rx_action.freq);
2012 #endif /* CONFIG_P2P */
2013                 break;
2014         case EVENT_RX_PROBE_REQ:
2015                 if (data->rx_probe_req.sa == NULL ||
2016                     data->rx_probe_req.ie == NULL)
2017                         break;
2018 #ifdef CONFIG_AP
2019                 if (wpa_s->ap_iface) {
2020                         hostapd_probe_req_rx(wpa_s->ap_iface->bss[0],
2021                                              data->rx_probe_req.sa,
2022                                              data->rx_probe_req.ie,
2023                                              data->rx_probe_req.ie_len);
2024                         break;
2025                 }
2026 #endif /* CONFIG_AP */
2027 #ifdef CONFIG_P2P
2028                 wpas_p2p_probe_req_rx(wpa_s, data->rx_probe_req.sa,
2029                                       data->rx_probe_req.ie,
2030                                       data->rx_probe_req.ie_len);
2031 #endif /* CONFIG_P2P */
2032                 break;
2033 #ifdef CONFIG_P2P
2034         case EVENT_REMAIN_ON_CHANNEL:
2035                 wpas_p2p_remain_on_channel_cb(
2036                         wpa_s, data->remain_on_channel.freq,
2037                         data->remain_on_channel.duration);
2038                 break;
2039         case EVENT_CANCEL_REMAIN_ON_CHANNEL:
2040                 wpas_p2p_cancel_remain_on_channel_cb(
2041                         wpa_s, data->remain_on_channel.freq);
2042                 break;
2043         case EVENT_P2P_DEV_FOUND: {
2044                 struct p2p_peer_info peer_info;
2045
2046                 os_memset(&peer_info, 0, sizeof(peer_info));
2047                 if (data->p2p_dev_found.dev_addr)
2048                         os_memcpy(peer_info.p2p_device_addr,
2049                                   data->p2p_dev_found.dev_addr, ETH_ALEN);
2050                 if (data->p2p_dev_found.pri_dev_type)
2051                         os_memcpy(peer_info.pri_dev_type,
2052                                   data->p2p_dev_found.pri_dev_type,
2053                                   sizeof(peer_info.pri_dev_type));
2054                 if (data->p2p_dev_found.dev_name)
2055                         os_strlcpy(peer_info.device_name,
2056                                    data->p2p_dev_found.dev_name,
2057                                    sizeof(peer_info.device_name));
2058                 peer_info.config_methods = data->p2p_dev_found.config_methods;
2059                 peer_info.dev_capab = data->p2p_dev_found.dev_capab;
2060                 peer_info.group_capab = data->p2p_dev_found.group_capab;
2061
2062                 /*
2063                  * FIX: new_device=1 is not necessarily correct. We should
2064                  * maintain a P2P peer database in wpa_supplicant and update
2065                  * this information based on whether the peer is truly new.
2066                  */
2067                 wpas_dev_found(wpa_s, data->p2p_dev_found.addr, &peer_info, 1);
2068                 break;
2069                 }
2070         case EVENT_P2P_GO_NEG_REQ_RX:
2071                 wpas_go_neg_req_rx(wpa_s, data->p2p_go_neg_req_rx.src,
2072                                    data->p2p_go_neg_req_rx.dev_passwd_id);
2073                 break;
2074         case EVENT_P2P_GO_NEG_COMPLETED:
2075                 wpas_go_neg_completed(wpa_s, data->p2p_go_neg_completed.res);
2076                 break;
2077         case EVENT_P2P_PROV_DISC_REQUEST:
2078                 wpas_prov_disc_req(wpa_s, data->p2p_prov_disc_req.peer,
2079                                    data->p2p_prov_disc_req.config_methods,
2080                                    data->p2p_prov_disc_req.dev_addr,
2081                                    data->p2p_prov_disc_req.pri_dev_type,
2082                                    data->p2p_prov_disc_req.dev_name,
2083                                    data->p2p_prov_disc_req.supp_config_methods,
2084                                    data->p2p_prov_disc_req.dev_capab,
2085                                    data->p2p_prov_disc_req.group_capab);
2086                 break;
2087         case EVENT_P2P_PROV_DISC_RESPONSE:
2088                 wpas_prov_disc_resp(wpa_s, data->p2p_prov_disc_resp.peer,
2089                                     data->p2p_prov_disc_resp.config_methods);
2090                 break;
2091         case EVENT_P2P_SD_REQUEST:
2092                 wpas_sd_request(wpa_s, data->p2p_sd_req.freq,
2093                                 data->p2p_sd_req.sa,
2094                                 data->p2p_sd_req.dialog_token,
2095                                 data->p2p_sd_req.update_indic,
2096                                 data->p2p_sd_req.tlvs,
2097                                 data->p2p_sd_req.tlvs_len);
2098                 break;
2099         case EVENT_P2P_SD_RESPONSE:
2100                 wpas_sd_response(wpa_s, data->p2p_sd_resp.sa,
2101                                  data->p2p_sd_resp.update_indic,
2102                                  data->p2p_sd_resp.tlvs,
2103                                  data->p2p_sd_resp.tlvs_len);
2104                 break;
2105 #endif /* CONFIG_P2P */
2106 #ifdef CONFIG_CLIENT_MLME
2107         case EVENT_MLME_RX: {
2108                 struct ieee80211_rx_status rx_status;
2109                 os_memset(&rx_status, 0, sizeof(rx_status));
2110                 rx_status.freq = data->mlme_rx.freq;
2111                 rx_status.channel = data->mlme_rx.channel;
2112                 rx_status.ssi = data->mlme_rx.ssi;
2113                 ieee80211_sta_rx(wpa_s, data->mlme_rx.buf, data->mlme_rx.len,
2114                                  &rx_status);
2115                 break;
2116         }
2117 #endif /* CONFIG_CLIENT_MLME */
2118         case EVENT_EAPOL_RX:
2119                 wpa_supplicant_rx_eapol(wpa_s, data->eapol_rx.src,
2120                                         data->eapol_rx.data,
2121                                         data->eapol_rx.data_len);
2122                 break;
2123         case EVENT_SIGNAL_CHANGE:
2124                 bgscan_notify_signal_change(
2125                         wpa_s, data->signal_change.above_threshold,
2126                         data->signal_change.current_signal,
2127                         data->signal_change.current_noise,
2128                         data->signal_change.current_txrate);
2129                 break;
2130         case EVENT_INTERFACE_ENABLED:
2131                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was enabled");
2132                 if (wpa_s->wpa_state == WPA_INTERFACE_DISABLED) {
2133 #ifdef CONFIG_AP
2134                         if (!wpa_s->ap_iface) {
2135                                 wpa_supplicant_set_state(wpa_s,
2136                                                          WPA_DISCONNECTED);
2137                                 wpa_supplicant_req_scan(wpa_s, 0, 0);
2138                         } else
2139                                 wpa_supplicant_set_state(wpa_s,
2140                                                          WPA_COMPLETED);
2141 #else /* CONFIG_AP */
2142                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
2143                         wpa_supplicant_req_scan(wpa_s, 0, 0);
2144 #endif /* CONFIG_AP */
2145                 }
2146                 break;
2147         case EVENT_INTERFACE_DISABLED:
2148                 wpa_dbg(wpa_s, MSG_DEBUG, "Interface was disabled");
2149                 wpa_supplicant_mark_disassoc(wpa_s);
2150                 wpa_supplicant_set_state(wpa_s, WPA_INTERFACE_DISABLED);
2151                 break;
2152         case EVENT_CHANNEL_LIST_CHANGED:
2153                 if (wpa_s->drv_priv == NULL)
2154                         break; /* Ignore event during drv initialization */
2155 #ifdef CONFIG_P2P
2156                 wpas_p2p_update_channel_list(wpa_s);
2157 #endif /* CONFIG_P2P */
2158                 break;
2159         case EVENT_INTERFACE_UNAVAILABLE:
2160 #ifdef CONFIG_P2P
2161                 wpas_p2p_interface_unavailable(wpa_s);
2162 #endif /* CONFIG_P2P */
2163                 break;
2164         case EVENT_BEST_CHANNEL:
2165                 wpa_dbg(wpa_s, MSG_DEBUG, "Best channel event received "
2166                         "(%d %d %d)",
2167                         data->best_chan.freq_24, data->best_chan.freq_5,
2168                         data->best_chan.freq_overall);
2169                 wpa_s->best_24_freq = data->best_chan.freq_24;
2170                 wpa_s->best_5_freq = data->best_chan.freq_5;
2171                 wpa_s->best_overall_freq = data->best_chan.freq_overall;
2172 #ifdef CONFIG_P2P
2173                 wpas_p2p_update_best_channels(wpa_s, data->best_chan.freq_24,
2174                                               data->best_chan.freq_5,
2175                                               data->best_chan.freq_overall);
2176 #endif /* CONFIG_P2P */
2177                 break;
2178         case EVENT_UNPROT_DEAUTH:
2179                 wpa_supplicant_event_unprot_deauth(wpa_s,
2180                                                    &data->unprot_deauth);
2181                 break;
2182         case EVENT_UNPROT_DISASSOC:
2183                 wpa_supplicant_event_unprot_disassoc(wpa_s,
2184                                                      &data->unprot_disassoc);
2185                 break;
2186         case EVENT_STATION_LOW_ACK:
2187 #ifdef CONFIG_AP
2188                 if (wpa_s->ap_iface && data)
2189                         hostapd_event_sta_low_ack(wpa_s->ap_iface->bss[0],
2190                                                   data->low_ack.addr);
2191 #endif /* CONFIG_AP */
2192                 break;
2193         case EVENT_IBSS_PEER_LOST:
2194 #ifdef CONFIG_IBSS_RSN
2195                 ibss_rsn_stop(wpa_s->ibss_rsn, data->ibss_peer_lost.peer);
2196 #endif /* CONFIG_IBSS_RSN */
2197                 break;
2198         default:
2199                 wpa_msg(wpa_s, MSG_INFO, "Unknown event %d", event);
2200                 break;
2201         }
2202 }