wpa_supplicant/sme.c

   1 /*
   2  * wpa_supplicant - SME
   3  * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "eapol_supp/eapol_supp_sm.h"
  16 #include "common/wpa_common.h"
  17 #include "common/sae.h"
  18 #include "rsn_supp/wpa.h"
  19 #include "rsn_supp/pmksa_cache.h"
  20 #include "config.h"
  21 #include "wpa_supplicant_i.h"
  22 #include "driver_i.h"
  23 #include "wpas_glue.h"
  24 #include "wps_supplicant.h"
  25 #include "p2p_supplicant.h"
  26 #include "notify.h"
  27 #include "bss.h"
  28 #include "scan.h"
  29 #include "sme.h"
  30 #include "hs20_supplicant.h"
  31
  32 #define SME_AUTH_TIMEOUT 5
  33 #define SME_ASSOC_TIMEOUT 5
  34
  35 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
  36 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
  37 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  38 #ifdef CONFIG_IEEE80211W
  39 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
  40 #endif /* CONFIG_IEEE80211W */
  41
  42
  43 #ifdef CONFIG_SAE
  44
  45 static int index_within_array(const int *array, int idx)
  46 {
  47         int i;
  48         for (i = 0; i < idx; i++) {
  49                 if (array[i] <= 0)
  50                         return 0;
  51         }
  52         return 1;
  53 }
  54
  55
  56 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
  57 {
  58         int *groups = wpa_s->conf->sae_groups;
  59         int default_groups[] = { 19, 20, 21, 25, 26, 0 };
  60
  61         if (!groups || groups[0] <= 0)
  62                 groups = default_groups;
  63
  64         /* Configuration may have changed, so validate current index */
  65         if (!index_within_array(groups, wpa_s->sme.sae_group_index))
  66                 return -1;
  67
  68         for (;;) {
  69                 int group = groups[wpa_s->sme.sae_group_index];
  70                 if (group < 0)
  71                         break;
  72                 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
  73                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
  74                                 wpa_s->sme.sae.group);
  75                        return 0;
  76                 }
  77                 wpa_s->sme.sae_group_index++;
  78         }
  79
  80         return -1;
  81 }
  82
  83
  84 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
  85                                                  struct wpa_ssid *ssid,
  86                                                  const u8 *bssid)
  87 {
  88         struct wpabuf *buf;
  89         size_t len;
  90
  91         if (ssid->passphrase == NULL) {
  92                 wpa_printf(MSG_DEBUG, "SAE: No password available");
  93                 return NULL;
  94         }
  95
  96         if (sme_set_sae_group(wpa_s) < 0) {
  97                 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
  98                 return NULL;
  99         }
 100
 101         if (sae_prepare_commit(wpa_s->own_addr, bssid,
 102                                (u8 *) ssid->passphrase,
 103                                os_strlen(ssid->passphrase),
 104                                &wpa_s->sme.sae) < 0) {
 105                 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
 106                 return NULL;
 107         }
 108
 109         len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
 110         buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
 111         if (buf == NULL)
 112                 return NULL;
 113
 114         wpabuf_put_le16(buf, 1); /* Transaction seq# */
 115         wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
 116         sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
 117
 118         return buf;
 119 }
 120
 121
 122 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
 123 {
 124         struct wpabuf *buf;
 125
 126         buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
 127         if (buf == NULL)
 128                 return NULL;
 129
 130         wpabuf_put_le16(buf, 2); /* Transaction seq# */
 131         wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
 132         sae_write_confirm(&wpa_s->sme.sae, buf);
 133
 134         return buf;
 135 }
 136
 137 #endif /* CONFIG_SAE */
 138
 139
 140 /**
 141  * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
 142  * @wpa_s: Pointer to wpa_supplicant data
 143  * @bss: Pointer to the bss which is the target of authentication attempt
 144  */
 145 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
 146                                 struct wpa_bss *bss)
 147 {
 148         const u8 rrm_ie_len = 5;
 149         u8 *pos;
 150         const u8 *rrm_ie;
 151
 152         wpa_s->rrm.rrm_used = 0;
 153
 154         wpa_printf(MSG_DEBUG,
 155                    "RRM: Determining whether RRM can be used - device support: 0x%x",
 156                    wpa_s->drv_rrm_flags);
 157
 158         rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
 159         if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
 160                 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
 161                 return;
 162         }
 163
 164         if (!(wpa_s->drv_rrm_flags &
 165               WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) ||
 166             !(wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) {
 167                 wpa_printf(MSG_DEBUG,
 168                            "RRM: Insufficient RRM support in driver - do not use RRM");
 169                 return;
 170         }
 171
 172         if (sizeof(wpa_s->sme.assoc_req_ie) <
 173             wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) {
 174                 wpa_printf(MSG_INFO,
 175                            "RRM: Unable to use RRM, no room for RRM IE");
 176                 return;
 177         }
 178
 179         wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request");
 180         pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
 181         os_memset(pos, 0, 2 + rrm_ie_len);
 182         *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES;
 183         *pos++ = rrm_ie_len;
 184
 185         /* Set supported capabilites flags */
 186         if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION)
 187                 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT;
 188
 189         wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2;
 190         wpa_s->rrm.rrm_used = 1;
 191 }
 192
 193
 194 static void sme_send_authentication(struct wpa_supplicant *wpa_s,
 195                                     struct wpa_bss *bss, struct wpa_ssid *ssid,
 196                                     int start)
 197 {
 198         struct wpa_driver_auth_params params;
 199         struct wpa_ssid *old_ssid;
 200 #ifdef CONFIG_IEEE80211R
 201         const u8 *ie;
 202 #endif /* CONFIG_IEEE80211R */
 203 #ifdef CONFIG_IEEE80211R
 204         const u8 *md = NULL;
 205 #endif /* CONFIG_IEEE80211R */
 206         int i, bssid_changed;
 207         struct wpabuf *resp = NULL;
 208         u8 ext_capab[18];
 209         int ext_capab_len;
 210
 211         if (bss == NULL) {
 212                 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
 213                         "the network");
 214                 wpas_connect_work_done(wpa_s);
 215                 return;
 216         }
 217
 218         wpa_s->current_bss = bss;
 219
 220         os_memset(&params, 0, sizeof(params));
 221         wpa_s->reassociate = 0;
 222
 223         params.freq = bss->freq;
 224         params.bssid = bss->bssid;
 225         params.ssid = bss->ssid;
 226         params.ssid_len = bss->ssid_len;
 227         params.p2p = ssid->p2p_group;
 228
 229         if (wpa_s->sme.ssid_len != params.ssid_len ||
 230             os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
 231                 wpa_s->sme.prev_bssid_set = 0;
 232
 233         wpa_s->sme.freq = params.freq;
 234         os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
 235         wpa_s->sme.ssid_len = params.ssid_len;
 236
 237         params.auth_alg = WPA_AUTH_ALG_OPEN;
 238 #ifdef IEEE8021X_EAPOL
 239         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 240                 if (ssid->leap) {
 241                         if (ssid->non_leap == 0)
 242                                 params.auth_alg = WPA_AUTH_ALG_LEAP;
 243                         else
 244                                 params.auth_alg |= WPA_AUTH_ALG_LEAP;
 245                 }
 246         }
 247 #endif /* IEEE8021X_EAPOL */
 248         wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
 249                 params.auth_alg);
 250         if (ssid->auth_alg) {
 251                 params.auth_alg = ssid->auth_alg;
 252                 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
 253                         "0x%x", params.auth_alg);
 254         }
 255 #ifdef CONFIG_SAE
 256         wpa_s->sme.sae_pmksa_caching = 0;
 257         if (wpa_key_mgmt_sae(ssid->key_mgmt)) {
 258                 const u8 *rsn;
 259                 struct wpa_ie_data ied;
 260
 261                 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 262                 if (!rsn) {
 263                         wpa_dbg(wpa_s, MSG_DEBUG,
 264                                 "SAE enabled, but target BSS does not advertise RSN");
 265                 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 &&
 266                            wpa_key_mgmt_sae(ied.key_mgmt)) {
 267                         wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg");
 268                         params.auth_alg = WPA_AUTH_ALG_SAE;
 269                 } else {
 270                         wpa_dbg(wpa_s, MSG_DEBUG,
 271                                 "SAE enabled, but target BSS does not advertise SAE AKM for RSN");
 272                 }
 273         }
 274 #endif /* CONFIG_SAE */
 275
 276         for (i = 0; i < NUM_WEP_KEYS; i++) {
 277                 if (ssid->wep_key_len[i])
 278                         params.wep_key[i] = ssid->wep_key[i];
 279                 params.wep_key_len[i] = ssid->wep_key_len[i];
 280         }
 281         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
 282
 283         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 284         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 285         os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 286         if (bssid_changed)
 287                 wpas_notify_bssid_changed(wpa_s);
 288
 289         if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 290              wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
 291             wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 292                 int try_opportunistic;
 293                 try_opportunistic = (ssid->proactive_key_caching < 0 ?
 294                                      wpa_s->conf->okc :
 295                                      ssid->proactive_key_caching) &&
 296                         (ssid->proto & WPA_PROTO_RSN);
 297                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
 298                                             wpa_s->current_ssid,
 299                                             try_opportunistic) == 0)
 300                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 301                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 302                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
 303                                               wpa_s->sme.assoc_req_ie,
 304                                               &wpa_s->sme.assoc_req_ie_len)) {
 305                         wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
 306                                 "key management and encryption suites");
 307                         wpas_connect_work_done(wpa_s);
 308                         return;
 309                 }
 310         } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) &&
 311                    wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) {
 312                 /*
 313                  * Both WPA and non-WPA IEEE 802.1X enabled in configuration -
 314                  * use non-WPA since the scan results did not indicate that the
 315                  * AP is using WPA or WPA2.
 316                  */
 317                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 318                 wpa_s->sme.assoc_req_ie_len = 0;
 319         } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 320                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 321                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 322                                               wpa_s->sme.assoc_req_ie,
 323                                               &wpa_s->sme.assoc_req_ie_len)) {
 324                         wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
 325                                 "key management and encryption suites (no "
 326                                 "scan results)");
 327                         wpas_connect_work_done(wpa_s);
 328                         return;
 329                 }
 330 #ifdef CONFIG_WPS
 331         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 332                 struct wpabuf *wps_ie;
 333                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
 334                 if (wps_ie && wpabuf_len(wps_ie) <=
 335                     sizeof(wpa_s->sme.assoc_req_ie)) {
 336                         wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
 337                         os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
 338                                   wpa_s->sme.assoc_req_ie_len);
 339                 } else
 340                         wpa_s->sme.assoc_req_ie_len = 0;
 341                 wpabuf_free(wps_ie);
 342                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 343 #endif /* CONFIG_WPS */
 344         } else {
 345                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 346                 wpa_s->sme.assoc_req_ie_len = 0;
 347         }
 348
 349 #ifdef CONFIG_IEEE80211R
 350         ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 351         if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 352                 md = ie + 2;
 353         wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
 354         if (md) {
 355                 /* Prepare for the next transition */
 356                 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
 357         }
 358
 359         if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
 360                 if (wpa_s->sme.assoc_req_ie_len + 5 <
 361                     sizeof(wpa_s->sme.assoc_req_ie)) {
 362                         struct rsn_mdie *mdie;
 363                         u8 *pos = wpa_s->sme.assoc_req_ie +
 364                                 wpa_s->sme.assoc_req_ie_len;
 365                         *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 366                         *pos++ = sizeof(*mdie);
 367                         mdie = (struct rsn_mdie *) pos;
 368                         os_memcpy(mdie->mobility_domain, md,
 369                                   MOBILITY_DOMAIN_ID_LEN);
 370                         mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
 371                         wpa_s->sme.assoc_req_ie_len += 5;
 372                 }
 373
 374                 if (wpa_s->sme.ft_used &&
 375                     os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
 376                     wpa_sm_has_ptk(wpa_s->wpa)) {
 377                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
 378                                 "over-the-air");
 379                         params.auth_alg = WPA_AUTH_ALG_FT;
 380                         params.ie = wpa_s->sme.ft_ies;
 381                         params.ie_len = wpa_s->sme.ft_ies_len;
 382                 }
 383         }
 384 #endif /* CONFIG_IEEE80211R */
 385
 386 #ifdef CONFIG_IEEE80211W
 387         wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
 388                 wpa_s->conf->pmf : ssid->ieee80211w;
 389         if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) {
 390                 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 391                 struct wpa_ie_data _ie;
 392                 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
 393                     _ie.capabilities &
 394                     (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
 395                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
 396                                 "MFP: require MFP");
 397                         wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
 398                 }
 399         }
 400 #endif /* CONFIG_IEEE80211W */
 401
 402 #ifdef CONFIG_P2P
 403         if (wpa_s->global->p2p) {
 404                 u8 *pos;
 405                 size_t len;
 406                 int res;
 407                 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
 408                 len = sizeof(wpa_s->sme.assoc_req_ie) -
 409                         wpa_s->sme.assoc_req_ie_len;
 410                 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
 411                                             ssid->p2p_group);
 412                 if (res >= 0)
 413                         wpa_s->sme.assoc_req_ie_len += res;
 414         }
 415 #endif /* CONFIG_P2P */
 416
 417 #ifdef CONFIG_HS20
 418         if (is_hs20_network(wpa_s, ssid, bss)) {
 419                 struct wpabuf *hs20;
 420                 hs20 = wpabuf_alloc(20);
 421                 if (hs20) {
 422                         int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
 423                         size_t len;
 424
 425                         wpas_hs20_add_indication(hs20, pps_mo_id);
 426                         len = sizeof(wpa_s->sme.assoc_req_ie) -
 427                                 wpa_s->sme.assoc_req_ie_len;
 428                         if (wpabuf_len(hs20) <= len) {
 429                                 os_memcpy(wpa_s->sme.assoc_req_ie +
 430                                           wpa_s->sme.assoc_req_ie_len,
 431                                           wpabuf_head(hs20), wpabuf_len(hs20));
 432                                 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
 433                         }
 434                         wpabuf_free(hs20);
 435                 }
 436         }
 437 #endif /* CONFIG_HS20 */
 438
 439         ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
 440                                              sizeof(ext_capab));
 441         if (ext_capab_len > 0) {
 442                 u8 *pos = wpa_s->sme.assoc_req_ie;
 443                 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
 444                         pos += 2 + pos[1];
 445                 os_memmove(pos + ext_capab_len, pos,
 446                            wpa_s->sme.assoc_req_ie_len -
 447                            (pos - wpa_s->sme.assoc_req_ie));
 448                 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
 449                 os_memcpy(pos, ext_capab, ext_capab_len);
 450         }
 451
 452         sme_auth_handle_rrm(wpa_s, bss);
 453
 454 #ifdef CONFIG_SAE
 455         if (params.auth_alg == WPA_AUTH_ALG_SAE &&
 456             pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
 457         {
 458                 wpa_dbg(wpa_s, MSG_DEBUG,
 459                         "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
 460                 params.auth_alg = WPA_AUTH_ALG_OPEN;
 461                 wpa_s->sme.sae_pmksa_caching = 1;
 462         }
 463
 464         if (params.auth_alg == WPA_AUTH_ALG_SAE) {
 465                 if (start)
 466                         resp = sme_auth_build_sae_commit(wpa_s, ssid,
 467                                                          bss->bssid);
 468                 else
 469                         resp = sme_auth_build_sae_confirm(wpa_s);
 470                 if (resp == NULL) {
 471                         wpas_connection_failed(wpa_s, bss->bssid);
 472                         return;
 473                 }
 474                 params.sae_data = wpabuf_head(resp);
 475                 params.sae_data_len = wpabuf_len(resp);
 476                 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
 477         }
 478 #endif /* CONFIG_SAE */
 479
 480         wpa_supplicant_cancel_sched_scan(wpa_s);
 481         wpa_supplicant_cancel_scan(wpa_s);
 482
 483         wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
 484                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 485                 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 486
 487         wpa_clear_keys(wpa_s, bss->bssid);
 488         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 489         old_ssid = wpa_s->current_ssid;
 490         wpa_s->current_ssid = ssid;
 491         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 492         wpa_supplicant_initiate_eapol(wpa_s);
 493         if (old_ssid != wpa_s->current_ssid)
 494                 wpas_notify_network_changed(wpa_s);
 495
 496 #ifdef CONFIG_P2P
 497         /*
 498          * If multi-channel concurrency is not supported, check for any
 499          * frequency conflict. In case of any frequency conflict, remove the
 500          * least prioritized connection.
 501          */
 502         if (wpa_s->num_multichan_concurrent < 2) {
 503                 int freq, num;
 504                 num = get_shared_radio_freqs(wpa_s, &freq, 1);
 505                 if (num > 0 && freq > 0 && freq != params.freq) {
 506                         wpa_printf(MSG_DEBUG,
 507                                    "Conflicting frequency found (%d != %d)",
 508                                    freq, params.freq);
 509                         if (wpas_p2p_handle_frequency_conflicts(wpa_s,
 510                                                                 params.freq,
 511                                                                 ssid) < 0) {
 512                                 wpas_connection_failed(wpa_s, bss->bssid);
 513                                 wpa_supplicant_mark_disassoc(wpa_s);
 514                                 wpabuf_free(resp);
 515                                 wpas_connect_work_done(wpa_s);
 516                                 return;
 517                         }
 518                 }
 519         }
 520 #endif /* CONFIG_P2P */
 521
 522         wpa_s->sme.auth_alg = params.auth_alg;
 523         if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 524                 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
 525                         "driver failed");
 526                 wpas_connection_failed(wpa_s, bss->bssid);
 527                 wpa_supplicant_mark_disassoc(wpa_s);
 528                 wpabuf_free(resp);
 529                 wpas_connect_work_done(wpa_s);
 530                 return;
 531         }
 532
 533         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
 534                                NULL);
 535
 536         /*
 537          * Association will be started based on the authentication event from
 538          * the driver.
 539          */
 540
 541         wpabuf_free(resp);
 542 }
 543
 544
 545 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
 546 {
 547         struct wpa_connect_work *cwork = work->ctx;
 548         struct wpa_supplicant *wpa_s = work->wpa_s;
 549
 550         if (deinit) {
 551                 if (work->started)
 552                         wpa_s->connect_work = NULL;
 553
 554                 wpas_connect_work_free(cwork);
 555                 return;
 556         }
 557
 558         wpa_s->connect_work = work;
 559
 560         if (cwork->bss_removed ||
 561             !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid)) {
 562                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
 563                 wpas_connect_work_done(wpa_s);
 564                 return;
 565         }
 566
 567         sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
 568 }
 569
 570
 571 void sme_authenticate(struct wpa_supplicant *wpa_s,
 572                       struct wpa_bss *bss, struct wpa_ssid *ssid)
 573 {
 574         struct wpa_connect_work *cwork;
 575
 576         if (bss == NULL || ssid == NULL)
 577                 return;
 578         if (wpa_s->connect_work) {
 579                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
 580                 return;
 581         }
 582
 583         if (radio_work_pending(wpa_s, "sme-connect")) {
 584                 /*
 585                  * The previous sme-connect work might no longer be valid due to
 586                  * the fact that the BSS list was updated. In addition, it makes
 587                  * sense to adhere to the 'newer' decision.
 588                  */
 589                 wpa_dbg(wpa_s, MSG_DEBUG,
 590                         "SME: Remove previous pending sme-connect");
 591                 radio_remove_works(wpa_s, "sme-connect", 0);
 592         }
 593
 594         cwork = os_zalloc(sizeof(*cwork));
 595         if (cwork == NULL)
 596                 return;
 597         cwork->bss = bss;
 598         cwork->ssid = ssid;
 599         cwork->sme = 1;
 600
 601 #ifdef CONFIG_SAE
 602         wpa_s->sme.sae.state = SAE_NOTHING;
 603         wpa_s->sme.sae.send_confirm = 0;
 604         wpa_s->sme.sae_group_index = 0;
 605 #endif /* CONFIG_SAE */
 606
 607         if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
 608                            sme_auth_start_cb, cwork) < 0)
 609                 wpas_connect_work_free(cwork);
 610 }
 611
 612
 613 #ifdef CONFIG_SAE
 614
 615 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
 616                         u16 status_code, const u8 *data, size_t len)
 617 {
 618         int *groups;
 619
 620         wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
 621                 "status code %u", auth_transaction, status_code);
 622
 623         if (auth_transaction == 1 &&
 624             status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
 625             wpa_s->sme.sae.state == SAE_COMMITTED &&
 626             wpa_s->current_bss && wpa_s->current_ssid) {
 627                 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
 628                 u16 group;
 629
 630                 groups = wpa_s->conf->sae_groups;
 631                 if (!groups || groups[0] <= 0)
 632                         groups = default_groups;
 633
 634                 if (len < sizeof(le16)) {
 635                         wpa_dbg(wpa_s, MSG_DEBUG,
 636                                 "SME: Too short SAE anti-clogging token request");
 637                         return -1;
 638                 }
 639                 group = WPA_GET_LE16(data);
 640                 wpa_dbg(wpa_s, MSG_DEBUG,
 641                         "SME: SAE anti-clogging token requested (group %u)",
 642                         group);
 643                 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
 644                     WLAN_STATUS_SUCCESS) {
 645                         wpa_dbg(wpa_s, MSG_ERROR,
 646                                 "SME: SAE group %u of anti-clogging request is invalid",
 647                                 group);
 648                         return -1;
 649                 }
 650                 wpabuf_free(wpa_s->sme.sae_token);
 651                 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
 652                                                          len - sizeof(le16));
 653                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 654                                         wpa_s->current_ssid, 1);
 655                 return 0;
 656         }
 657
 658         if (auth_transaction == 1 &&
 659             status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
 660             wpa_s->sme.sae.state == SAE_COMMITTED &&
 661             wpa_s->current_bss && wpa_s->current_ssid) {
 662                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
 663                 wpa_s->sme.sae_group_index++;
 664                 if (sme_set_sae_group(wpa_s) < 0)
 665                         return -1; /* no other groups enabled */
 666                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
 667                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 668                                         wpa_s->current_ssid, 1);
 669                 return 0;
 670         }
 671
 672         if (status_code != WLAN_STATUS_SUCCESS)
 673                 return -1;
 674
 675         if (auth_transaction == 1) {
 676                 groups = wpa_s->conf->sae_groups;
 677
 678                 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
 679                 if (wpa_s->current_bss == NULL ||
 680                     wpa_s->current_ssid == NULL)
 681                         return -1;
 682                 if (wpa_s->sme.sae.state != SAE_COMMITTED)
 683                         return -1;
 684                 if (groups && groups[0] <= 0)
 685                         groups = NULL;
 686                 if (sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
 687                                      groups) != WLAN_STATUS_SUCCESS)
 688                         return -1;
 689
 690                 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
 691                         wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
 692                                    "commit");
 693                         return -1;
 694                 }
 695
 696                 wpabuf_free(wpa_s->sme.sae_token);
 697                 wpa_s->sme.sae_token = NULL;
 698                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 699                                         wpa_s->current_ssid, 0);
 700                 return 0;
 701         } else if (auth_transaction == 2) {
 702                 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
 703                 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
 704                         return -1;
 705                 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
 706                         return -1;
 707                 wpa_s->sme.sae.state = SAE_ACCEPTED;
 708                 sae_clear_temp_data(&wpa_s->sme.sae);
 709                 return 1;
 710         }
 711
 712         return -1;
 713 }
 714 #endif /* CONFIG_SAE */
 715
 716
 717 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 718 {
 719         struct wpa_ssid *ssid = wpa_s->current_ssid;
 720
 721         if (ssid == NULL) {
 722                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 723                         "when network is not selected");
 724                 return;
 725         }
 726
 727         if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
 728                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 729                         "when not in authenticating state");
 730                 return;
 731         }
 732
 733         if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
 734                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
 735                         "unexpected peer " MACSTR,
 736                         MAC2STR(data->auth.peer));
 737                 return;
 738         }
 739
 740         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
 741                 " auth_type=%d auth_transaction=%d status_code=%d",
 742                 MAC2STR(data->auth.peer), data->auth.auth_type,
 743                 data->auth.auth_transaction, data->auth.status_code);
 744         wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 745                     data->auth.ies, data->auth.ies_len);
 746
 747         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 748
 749 #ifdef CONFIG_SAE
 750         if (data->auth.auth_type == WLAN_AUTH_SAE) {
 751                 int res;
 752                 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
 753                                    data->auth.status_code, data->auth.ies,
 754                                    data->auth.ies_len);
 755                 if (res < 0) {
 756                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 757                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 758
 759                 }
 760                 if (res != 1)
 761                         return;
 762
 763                 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
 764                            "4-way handshake");
 765                 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
 766                                wpa_s->pending_bssid);
 767         }
 768 #endif /* CONFIG_SAE */
 769
 770         if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
 771                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
 772                         "code %d)", data->auth.status_code);
 773
 774                 if (data->auth.status_code !=
 775                     WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 776                     wpa_s->sme.auth_alg == data->auth.auth_type ||
 777                     wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
 778                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 779                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 780                         return;
 781                 }
 782
 783                 wpas_connect_work_done(wpa_s);
 784
 785                 switch (data->auth.auth_type) {
 786                 case WLAN_AUTH_OPEN:
 787                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 788
 789                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
 790                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 791                                                  wpa_s->current_ssid);
 792                         return;
 793
 794                 case WLAN_AUTH_SHARED_KEY:
 795                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 796
 797                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
 798                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 799                                                  wpa_s->current_ssid);
 800                         return;
 801
 802                 default:
 803                         return;
 804                 }
 805         }
 806
 807 #ifdef CONFIG_IEEE80211R
 808         if (data->auth.auth_type == WLAN_AUTH_FT) {
 809                 union wpa_event_data edata;
 810                 os_memset(&edata, 0, sizeof(edata));
 811                 edata.ft_ies.ies = data->auth.ies;
 812                 edata.ft_ies.ies_len = data->auth.ies_len;
 813                 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
 814                 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
 815         }
 816 #endif /* CONFIG_IEEE80211R */
 817
 818         sme_associate(wpa_s, ssid->mode, data->auth.peer,
 819                       data->auth.auth_type);
 820 }
 821
 822
 823 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 824                    const u8 *bssid, u16 auth_type)
 825 {
 826         struct wpa_driver_associate_params params;
 827         struct ieee802_11_elems elems;
 828 #ifdef CONFIG_HT_OVERRIDES
 829         struct ieee80211_ht_capabilities htcaps;
 830         struct ieee80211_ht_capabilities htcaps_mask;
 831 #endif /* CONFIG_HT_OVERRIDES */
 832 #ifdef CONFIG_VHT_OVERRIDES
 833         struct ieee80211_vht_capabilities vhtcaps;
 834         struct ieee80211_vht_capabilities vhtcaps_mask;
 835 #endif /* CONFIG_VHT_OVERRIDES */
 836
 837         os_memset(&params, 0, sizeof(params));
 838         params.bssid = bssid;
 839         params.ssid = wpa_s->sme.ssid;
 840         params.ssid_len = wpa_s->sme.ssid_len;
 841         params.freq.freq = wpa_s->sme.freq;
 842         params.bg_scan_period = wpa_s->current_ssid ?
 843                 wpa_s->current_ssid->bg_scan_period : -1;
 844         params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 845                 wpa_s->sme.assoc_req_ie : NULL;
 846         params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
 847         params.pairwise_suite = wpa_s->pairwise_cipher;
 848         params.group_suite = wpa_s->group_cipher;
 849         params.key_mgmt_suite = wpa_s->key_mgmt;
 850         params.wpa_proto = wpa_s->wpa_proto;
 851 #ifdef CONFIG_HT_OVERRIDES
 852         os_memset(&htcaps, 0, sizeof(htcaps));
 853         os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
 854         params.htcaps = (u8 *) &htcaps;
 855         params.htcaps_mask = (u8 *) &htcaps_mask;
 856         wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
 857 #endif /* CONFIG_HT_OVERRIDES */
 858 #ifdef CONFIG_VHT_OVERRIDES
 859         os_memset(&vhtcaps, 0, sizeof(vhtcaps));
 860         os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
 861         params.vhtcaps = &vhtcaps;
 862         params.vhtcaps_mask = &vhtcaps_mask;
 863         wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
 864 #endif /* CONFIG_VHT_OVERRIDES */
 865 #ifdef CONFIG_IEEE80211R
 866         if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 867                 params.wpa_ie = wpa_s->sme.ft_ies;
 868                 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
 869         }
 870 #endif /* CONFIG_IEEE80211R */
 871         params.mode = mode;
 872         params.mgmt_frame_protection = wpa_s->sme.mfp;
 873         params.rrm_used = wpa_s->rrm.rrm_used;
 874         if (wpa_s->sme.prev_bssid_set)
 875                 params.prev_bssid = wpa_s->sme.prev_bssid;
 876
 877         wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 878                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 879                 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
 880                 params.freq.freq);
 881
 882         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
 883
 884         if (params.wpa_ie == NULL ||
 885             ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 886             < 0) {
 887                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
 888                 os_memset(&elems, 0, sizeof(elems));
 889         }
 890         if (elems.rsn_ie) {
 891                 params.wpa_proto = WPA_PROTO_RSN;
 892                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
 893                                         elems.rsn_ie_len + 2);
 894         } else if (elems.wpa_ie) {
 895                 params.wpa_proto = WPA_PROTO_WPA;
 896                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 897                                         elems.wpa_ie_len + 2);
 898         } else if (elems.osen) {
 899                 params.wpa_proto = WPA_PROTO_OSEN;
 900                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
 901                                         elems.osen_len + 2);
 902         } else
 903                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 904         if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
 905                 params.p2p = 1;
 906
 907         if (wpa_s->parent->set_sta_uapsd)
 908                 params.uapsd = wpa_s->parent->sta_uapsd;
 909         else
 910                 params.uapsd = -1;
 911
 912         if (wpa_drv_associate(wpa_s, &params) < 0) {
 913                 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
 914                         "driver failed");
 915                 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 916                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 917                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 918                 return;
 919         }
 920
 921         eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
 922                                NULL);
 923 }
 924
 925
 926 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 927                       const u8 *ies, size_t ies_len)
 928 {
 929         if (md == NULL || ies == NULL) {
 930                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
 931                 os_free(wpa_s->sme.ft_ies);
 932                 wpa_s->sme.ft_ies = NULL;
 933                 wpa_s->sme.ft_ies_len = 0;
 934                 wpa_s->sme.ft_used = 0;
 935                 return 0;
 936         }
 937
 938         os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
 939         wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
 940         os_free(wpa_s->sme.ft_ies);
 941         wpa_s->sme.ft_ies = os_malloc(ies_len);
 942         if (wpa_s->sme.ft_ies == NULL)
 943                 return -1;
 944         os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
 945         wpa_s->sme.ft_ies_len = ies_len;
 946         return 0;
 947 }
 948
 949
 950 static void sme_deauth(struct wpa_supplicant *wpa_s)
 951 {
 952         int bssid_changed;
 953
 954         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 955
 956         if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 957                                    WLAN_REASON_DEAUTH_LEAVING) < 0) {
 958                 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
 959                         "failed");
 960         }
 961         wpa_s->sme.prev_bssid_set = 0;
 962
 963         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 964         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 965         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 966         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 967         if (bssid_changed)
 968                 wpas_notify_bssid_changed(wpa_s);
 969 }
 970
 971
 972 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
 973                             union wpa_event_data *data)
 974 {
 975         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
 976                 "status code %d", MAC2STR(wpa_s->pending_bssid),
 977                 data->assoc_reject.status_code);
 978
 979         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
 980
 981 #ifdef CONFIG_SAE
 982         if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
 983             wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
 984                 wpa_dbg(wpa_s, MSG_DEBUG,
 985                         "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
 986                 wpa_sm_aborted_cached(wpa_s->wpa);
 987                 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
 988                 if (wpa_s->current_bss) {
 989                         struct wpa_bss *bss = wpa_s->current_bss;
 990                         struct wpa_ssid *ssid = wpa_s->current_ssid;
 991
 992                         wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 993                                                WLAN_REASON_DEAUTH_LEAVING);
 994                         wpas_connect_work_done(wpa_s);
 995                         wpa_supplicant_mark_disassoc(wpa_s);
 996                         wpa_supplicant_connect(wpa_s, bss, ssid);
 997                         return;
 998                 }
 999         }
1000 #endif /* CONFIG_SAE */
1001
1002         /*
1003          * For now, unconditionally terminate the previous authentication. In
1004          * theory, this should not be needed, but mac80211 gets quite confused
1005          * if the authentication is left pending.. Some roaming cases might
1006          * benefit from using the previous authentication, so this could be
1007          * optimized in the future.
1008          */
1009         sme_deauth(wpa_s);
1010 }
1011
1012
1013 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1014                               union wpa_event_data *data)
1015 {
1016         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1017         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1018         wpa_supplicant_mark_disassoc(wpa_s);
1019 }
1020
1021
1022 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1023                                union wpa_event_data *data)
1024 {
1025         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1026         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1027         wpa_supplicant_mark_disassoc(wpa_s);
1028 }
1029
1030
1031 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1032                         struct disassoc_info *info)
1033 {
1034         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1035         if (wpa_s->sme.prev_bssid_set) {
1036                 /*
1037                  * cfg80211/mac80211 can get into somewhat confused state if
1038                  * the AP only disassociates us and leaves us in authenticated
1039                  * state. For now, force the state to be cleared to avoid
1040                  * confusing errors if we try to associate with the AP again.
1041                  */
1042                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1043                         "driver state");
1044                 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1045                                        WLAN_REASON_DEAUTH_LEAVING);
1046         }
1047 }
1048
1049
1050 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1051 {
1052         struct wpa_supplicant *wpa_s = eloop_ctx;
1053         if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1054                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1055                 sme_deauth(wpa_s);
1056         }
1057 }
1058
1059
1060 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1061 {
1062         struct wpa_supplicant *wpa_s = eloop_ctx;
1063         if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1064                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1065                 sme_deauth(wpa_s);
1066         }
1067 }
1068
1069
1070 void sme_state_changed(struct wpa_supplicant *wpa_s)
1071 {
1072         /* Make sure timers are cleaned up appropriately. */
1073         if (wpa_s->wpa_state != WPA_ASSOCIATING)
1074                 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1075         if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1076                 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1077 }
1078
1079
1080 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1081                                        const u8 *prev_pending_bssid)
1082 {
1083         /*
1084          * mac80211-workaround to force deauth on failed auth cmd,
1085          * requires us to remain in authenticating state to allow the
1086          * second authentication attempt to be continued properly.
1087          */
1088         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1089                 "to proceed after disconnection event");
1090         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1091         os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1092
1093         /*
1094          * Re-arm authentication timer in case auth fails for whatever reason.
1095          */
1096         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1097         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1098                                NULL);
1099 }
1100
1101
1102 void sme_deinit(struct wpa_supplicant *wpa_s)
1103 {
1104         os_free(wpa_s->sme.ft_ies);
1105         wpa_s->sme.ft_ies = NULL;
1106         wpa_s->sme.ft_ies_len = 0;
1107 #ifdef CONFIG_IEEE80211W
1108         sme_stop_sa_query(wpa_s);
1109 #endif /* CONFIG_IEEE80211W */
1110 #ifdef CONFIG_SAE
1111         wpabuf_free(wpa_s->sme.sae_token);
1112         wpa_s->sme.sae_token = NULL;
1113         sae_clear_data(&wpa_s->sme.sae);
1114 #endif /* CONFIG_SAE */
1115
1116         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1117         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1118         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1119 }
1120
1121
1122 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1123                                    const u8 *chan_list, u8 num_channels,
1124                                    u8 num_intol)
1125 {
1126         struct ieee80211_2040_bss_coex_ie *bc_ie;
1127         struct ieee80211_2040_intol_chan_report *ic_report;
1128         struct wpabuf *buf;
1129
1130         wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1131                    " (num_channels=%u num_intol=%u)",
1132                    MAC2STR(wpa_s->bssid), num_channels, num_intol);
1133         wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1134                     chan_list, num_channels);
1135
1136         buf = wpabuf_alloc(2 + /* action.category + action_code */
1137                            sizeof(struct ieee80211_2040_bss_coex_ie) +
1138                            sizeof(struct ieee80211_2040_intol_chan_report) +
1139                            num_channels);
1140         if (buf == NULL)
1141                 return;
1142
1143         wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1144         wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1145
1146         bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1147         bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1148         bc_ie->length = 1;
1149         if (num_intol)
1150                 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1151
1152         if (num_channels > 0) {
1153                 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1154                 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1155                 ic_report->length = num_channels + 1;
1156                 ic_report->op_class = 0;
1157                 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1158                           num_channels);
1159         }
1160
1161         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1162                                 wpa_s->own_addr, wpa_s->bssid,
1163                                 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1164                 wpa_msg(wpa_s, MSG_INFO,
1165                         "SME: Failed to send 20/40 BSS Coexistence frame");
1166         }
1167
1168         wpabuf_free(buf);
1169 }
1170
1171
1172 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1173 {
1174         struct wpa_bss *bss;
1175         const u8 *ie;
1176         u16 ht_cap;
1177         u8 chan_list[P2P_MAX_CHANNELS], channel;
1178         u8 num_channels = 0, num_intol = 0, i;
1179
1180         if (!wpa_s->sme.sched_obss_scan)
1181                 return 0;
1182
1183         wpa_s->sme.sched_obss_scan = 0;
1184         if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1185                 return 1;
1186
1187         /*
1188          * Check whether AP uses regulatory triplet or channel triplet in
1189          * country info. Right now the operating class of the BSS channel
1190          * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1191          * based on the assumption that operating class triplet is not used in
1192          * beacon frame. If the First Channel Number/Operating Extension
1193          * Identifier octet has a positive integer value of 201 or greater,
1194          * then its operating class triplet.
1195          *
1196          * TODO: If Supported Operating Classes element is present in beacon
1197          * frame, have to lookup operating class in Annex E and fill them in
1198          * 2040 coex frame.
1199          */
1200         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1201         if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1202                 return 1;
1203
1204         os_memset(chan_list, 0, sizeof(chan_list));
1205
1206         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1207                 /* Skip other band bss */
1208                 enum hostapd_hw_mode mode;
1209                 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1210                 if (mode != HOSTAPD_MODE_IEEE80211G &&
1211                     mode != HOSTAPD_MODE_IEEE80211B)
1212                         continue;
1213
1214                 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1215                 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1216                 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1217                            " freq=%u chan=%u ht_cap=0x%x",
1218                            MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1219
1220                 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1221                         if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1222                                 num_intol++;
1223
1224                         /* Check whether the channel is already considered */
1225                         for (i = 0; i < num_channels; i++) {
1226                                 if (channel == chan_list[i])
1227                                         break;
1228                         }
1229                         if (i != num_channels)
1230                                 continue;
1231
1232                         chan_list[num_channels++] = channel;
1233                 }
1234         }
1235
1236         sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1237         return 1;
1238 }
1239
1240
1241 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
1242                                           u16 num_modes,
1243                                           enum hostapd_hw_mode mode)
1244 {
1245         u16 i;
1246
1247         for (i = 0; i < num_modes; i++) {
1248                 if (modes[i].mode == mode)
1249                         return &modes[i];
1250         }
1251
1252         return NULL;
1253 }
1254
1255
1256 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1257                                      struct wpa_driver_scan_params *params)
1258 {
1259         /* Include only affected channels */
1260         struct hostapd_hw_modes *mode;
1261         int count, i;
1262         int start, end;
1263
1264         mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1265                         HOSTAPD_MODE_IEEE80211G);
1266         if (mode == NULL) {
1267                 /* No channels supported in this band - use empty list */
1268                 params->freqs = os_zalloc(sizeof(int));
1269                 return;
1270         }
1271
1272         if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1273             wpa_s->current_bss) {
1274                 const u8 *ie;
1275
1276                 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1277                 if (ie && ie[1] >= 2) {
1278                         u8 o;
1279
1280                         o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1281                         if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1282                                 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1283                         else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1284                                 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1285                 }
1286         }
1287
1288         start = wpa_s->assoc_freq - 10;
1289         end = wpa_s->assoc_freq + 10;
1290         switch (wpa_s->sme.ht_sec_chan) {
1291         case HT_SEC_CHAN_UNKNOWN:
1292                 /* HT40+ possible on channels 1..9 */
1293                 if (wpa_s->assoc_freq <= 2452)
1294                         start -= 20;
1295                 /* HT40- possible on channels 5-13 */
1296                 if (wpa_s->assoc_freq >= 2432)
1297                         end += 20;
1298                 break;
1299         case HT_SEC_CHAN_ABOVE:
1300                 end += 20;
1301                 break;
1302         case HT_SEC_CHAN_BELOW:
1303                 start -= 20;
1304                 break;
1305         }
1306         wpa_printf(MSG_DEBUG,
1307                    "OBSS: assoc_freq %d possible affected range %d-%d",
1308                    wpa_s->assoc_freq, start, end);
1309
1310         params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1311         if (params->freqs == NULL)
1312                 return;
1313         for (count = 0, i = 0; i < mode->num_channels; i++) {
1314                 int freq;
1315
1316                 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1317                         continue;
1318                 freq = mode->channels[i].freq;
1319                 if (freq - 10 >= end || freq + 10 <= start)
1320                         continue; /* not affected */
1321                 params->freqs[count++] = freq;
1322         }
1323 }
1324
1325
1326 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1327 {
1328         struct wpa_supplicant *wpa_s = eloop_ctx;
1329         struct wpa_driver_scan_params params;
1330
1331         if (!wpa_s->current_bss) {
1332                 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1333                 return;
1334         }
1335
1336         os_memset(&params, 0, sizeof(params));
1337         wpa_obss_scan_freqs_list(wpa_s, &params);
1338         params.low_priority = 1;
1339         wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1340
1341         if (wpa_supplicant_trigger_scan(wpa_s, &params))
1342                 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1343         else
1344                 wpa_s->sme.sched_obss_scan = 1;
1345         os_free(params.freqs);
1346
1347         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1348                                sme_obss_scan_timeout, wpa_s, NULL);
1349 }
1350
1351
1352 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1353 {
1354         const u8 *ie;
1355         struct wpa_bss *bss = wpa_s->current_bss;
1356         struct wpa_ssid *ssid = wpa_s->current_ssid;
1357         struct hostapd_hw_modes *hw_mode = NULL;
1358         int i;
1359
1360         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1361         wpa_s->sme.sched_obss_scan = 0;
1362         wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1363         if (!enable)
1364                 return;
1365
1366         /*
1367          * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1368          * or it expects OBSS scan to be performed by wpa_supplicant.
1369          */
1370         if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1371               (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1372             ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1373                 return;
1374
1375         if (!wpa_s->hw.modes)
1376                 return;
1377
1378         /* only HT caps in 11g mode are relevant */
1379         for (i = 0; i < wpa_s->hw.num_modes; i++) {
1380                 hw_mode = &wpa_s->hw.modes[i];
1381                 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1382                         break;
1383         }
1384
1385         /* Driver does not support HT40 for 11g or doesn't have 11g. */
1386         if (i == wpa_s->hw.num_modes || !hw_mode ||
1387             !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1388                 return;
1389
1390         if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1391                 return; /* Not associated on 2.4 GHz band */
1392
1393         /* Check whether AP supports HT40 */
1394         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1395         if (!ie || ie[1] < 2 ||
1396             !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1397                 return; /* AP does not support HT40 */
1398
1399         ie = wpa_bss_get_ie(wpa_s->current_bss,
1400                             WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1401         if (!ie || ie[1] < 14)
1402                 return; /* AP does not request OBSS scans */
1403
1404         wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1405         if (wpa_s->sme.obss_scan_int < 10) {
1406                 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1407                            "replaced with the minimum 10 sec",
1408                            wpa_s->sme.obss_scan_int);
1409                 wpa_s->sme.obss_scan_int = 10;
1410         }
1411         wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1412                    wpa_s->sme.obss_scan_int);
1413         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1414                                sme_obss_scan_timeout, wpa_s, NULL);
1415 }
1416
1417
1418 #ifdef CONFIG_IEEE80211W
1419
1420 static const unsigned int sa_query_max_timeout = 1000;
1421 static const unsigned int sa_query_retry_timeout = 201;
1422
1423 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1424 {
1425         u32 tu;
1426         struct os_reltime now, passed;
1427         os_get_reltime(&now);
1428         os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1429         tu = (passed.sec * 1000000 + passed.usec) / 1024;
1430         if (sa_query_max_timeout < tu) {
1431                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1432                 sme_stop_sa_query(wpa_s);
1433                 wpa_supplicant_deauthenticate(
1434                         wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1435                 return 1;
1436         }
1437
1438         return 0;
1439 }
1440
1441
1442 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1443                                   const u8 *trans_id)
1444 {
1445         u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1446         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1447                 MACSTR, MAC2STR(wpa_s->bssid));
1448         wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1449                     trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1450         req[0] = WLAN_ACTION_SA_QUERY;
1451         req[1] = WLAN_SA_QUERY_REQUEST;
1452         os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1453         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1454                                 wpa_s->own_addr, wpa_s->bssid,
1455                                 req, sizeof(req), 0) < 0)
1456                 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1457                         "Request");
1458 }
1459
1460
1461 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1462 {
1463         struct wpa_supplicant *wpa_s = eloop_ctx;
1464         unsigned int timeout, sec, usec;
1465         u8 *trans_id, *nbuf;
1466
1467         if (wpa_s->sme.sa_query_count > 0 &&
1468             sme_check_sa_query_timeout(wpa_s))
1469                 return;
1470
1471         nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1472                                 wpa_s->sme.sa_query_count + 1,
1473                                 WLAN_SA_QUERY_TR_ID_LEN);
1474         if (nbuf == NULL)
1475                 return;
1476         if (wpa_s->sme.sa_query_count == 0) {
1477                 /* Starting a new SA Query procedure */
1478                 os_get_reltime(&wpa_s->sme.sa_query_start);
1479         }
1480         trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1481         wpa_s->sme.sa_query_trans_id = nbuf;
1482         wpa_s->sme.sa_query_count++;
1483
1484         if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1485                 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1486                 return;
1487         }
1488
1489         timeout = sa_query_retry_timeout;
1490         sec = ((timeout / 1000) * 1024) / 1000;
1491         usec = (timeout % 1000) * 1024;
1492         eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1493
1494         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1495                 wpa_s->sme.sa_query_count);
1496
1497         sme_send_sa_query_req(wpa_s, trans_id);
1498 }
1499
1500
1501 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1502 {
1503         sme_sa_query_timer(wpa_s, NULL);
1504 }
1505
1506
1507 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1508 {
1509         eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1510         os_free(wpa_s->sme.sa_query_trans_id);
1511         wpa_s->sme.sa_query_trans_id = NULL;
1512         wpa_s->sme.sa_query_count = 0;
1513 }
1514
1515
1516 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1517                                  const u8 *da, u16 reason_code)
1518 {
1519         struct wpa_ssid *ssid;
1520         struct os_reltime now;
1521
1522         if (wpa_s->wpa_state != WPA_COMPLETED)
1523                 return;
1524         ssid = wpa_s->current_ssid;
1525         if (ssid == NULL ||
1526             (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ?
1527              wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION)
1528                 return;
1529         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1530                 return;
1531         if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1532             reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1533                 return;
1534         if (wpa_s->sme.sa_query_count > 0)
1535                 return;
1536
1537         os_get_reltime(&now);
1538         if (wpa_s->sme.last_unprot_disconnect.sec &&
1539             !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1540                 return; /* limit SA Query procedure frequency */
1541         wpa_s->sme.last_unprot_disconnect = now;
1542
1543         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1544                 "possible AP/STA state mismatch - trigger SA Query");
1545         sme_start_sa_query(wpa_s);
1546 }
1547
1548
1549 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1550                      const u8 *data, size_t len)
1551 {
1552         int i;
1553
1554         if (wpa_s->sme.sa_query_trans_id == NULL ||
1555             len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1556             data[0] != WLAN_SA_QUERY_RESPONSE)
1557                 return;
1558         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1559                 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1560
1561         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1562                 return;
1563
1564         for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1565                 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1566                               i * WLAN_SA_QUERY_TR_ID_LEN,
1567                               data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1568                         break;
1569         }
1570
1571         if (i >= wpa_s->sme.sa_query_count) {
1572                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1573                         "transaction identifier found");
1574                 return;
1575         }
1576
1577         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1578                 "from " MACSTR, MAC2STR(sa));
1579         sme_stop_sa_query(wpa_s);
1580 }
1581
1582 #endif /* CONFIG_IEEE80211W */