wpa_supplicant/sme.c

   1 /*
   2  * wpa_supplicant - SME
   3  * Copyright (c) 2009-2010, 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 "rsn_supp/wpa.h"
  18 #include "rsn_supp/pmksa_cache.h"
  19 #include "config.h"
  20 #include "wpa_supplicant_i.h"
  21 #include "driver_i.h"
  22 #include "wpas_glue.h"
  23 #include "wps_supplicant.h"
  24 #include "p2p_supplicant.h"
  25 #include "notify.h"
  26 #include "bss.h"
  27 #include "scan.h"
  28 #include "sme.h"
  29 #include "hs20_supplicant.h"
  30
  31 #define SME_AUTH_TIMEOUT 5
  32 #define SME_ASSOC_TIMEOUT 5
  33
  34 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
  35 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
  36 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  37 #ifdef CONFIG_IEEE80211W
  38 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
  39 #endif /* CONFIG_IEEE80211W */
  40
  41
  42 void sme_authenticate(struct wpa_supplicant *wpa_s,
  43                       struct wpa_bss *bss, struct wpa_ssid *ssid)
  44 {
  45         struct wpa_driver_auth_params params;
  46         struct wpa_ssid *old_ssid;
  47 #ifdef CONFIG_IEEE80211R
  48         const u8 *ie;
  49 #endif /* CONFIG_IEEE80211R */
  50 #ifdef CONFIG_IEEE80211R
  51         const u8 *md = NULL;
  52 #endif /* CONFIG_IEEE80211R */
  53         int i, bssid_changed;
  54
  55         if (bss == NULL) {
  56                 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for "
  57                         "the network");
  58                 return;
  59         }
  60
  61         wpa_s->current_bss = bss;
  62
  63         os_memset(&params, 0, sizeof(params));
  64         wpa_s->reassociate = 0;
  65
  66         params.freq = bss->freq;
  67         params.bssid = bss->bssid;
  68         params.ssid = bss->ssid;
  69         params.ssid_len = bss->ssid_len;
  70         params.p2p = ssid->p2p_group;
  71
  72         if (wpa_s->sme.ssid_len != params.ssid_len ||
  73             os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0)
  74                 wpa_s->sme.prev_bssid_set = 0;
  75
  76         wpa_s->sme.freq = params.freq;
  77         os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len);
  78         wpa_s->sme.ssid_len = params.ssid_len;
  79
  80         params.auth_alg = WPA_AUTH_ALG_OPEN;
  81 #ifdef IEEE8021X_EAPOL
  82         if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
  83                 if (ssid->leap) {
  84                         if (ssid->non_leap == 0)
  85                                 params.auth_alg = WPA_AUTH_ALG_LEAP;
  86                         else
  87                                 params.auth_alg |= WPA_AUTH_ALG_LEAP;
  88                 }
  89         }
  90 #endif /* IEEE8021X_EAPOL */
  91         wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x",
  92                 params.auth_alg);
  93         if (ssid->auth_alg) {
  94                 params.auth_alg = ssid->auth_alg;
  95                 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: "
  96                         "0x%x", params.auth_alg);
  97         }
  98
  99         for (i = 0; i < NUM_WEP_KEYS; i++) {
 100                 if (ssid->wep_key_len[i])
 101                         params.wep_key[i] = ssid->wep_key[i];
 102                 params.wep_key_len[i] = ssid->wep_key_len[i];
 103         }
 104         params.wep_tx_keyidx = ssid->wep_tx_keyidx;
 105
 106         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 107         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 108         os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN);
 109         if (bssid_changed)
 110                 wpas_notify_bssid_changed(wpa_s);
 111
 112         if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) ||
 113              wpa_bss_get_ie(bss, WLAN_EID_RSN)) &&
 114             wpa_key_mgmt_wpa(ssid->key_mgmt)) {
 115                 int try_opportunistic;
 116                 try_opportunistic = ssid->proactive_key_caching &&
 117                         (ssid->proto & WPA_PROTO_RSN);
 118                 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid,
 119                                             wpa_s->current_ssid,
 120                                             try_opportunistic) == 0)
 121                         eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1);
 122                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 123                 if (wpa_supplicant_set_suites(wpa_s, bss, ssid,
 124                                               wpa_s->sme.assoc_req_ie,
 125                                               &wpa_s->sme.assoc_req_ie_len)) {
 126                         wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
 127                                 "key management and encryption suites");
 128                         return;
 129                 }
 130         } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) {
 131                 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie);
 132                 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid,
 133                                               wpa_s->sme.assoc_req_ie,
 134                                               &wpa_s->sme.assoc_req_ie_len)) {
 135                         wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA "
 136                                 "key management and encryption suites (no "
 137                                 "scan results)");
 138                         return;
 139                 }
 140 #ifdef CONFIG_WPS
 141         } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
 142                 struct wpabuf *wps_ie;
 143                 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid));
 144                 if (wps_ie && wpabuf_len(wps_ie) <=
 145                     sizeof(wpa_s->sme.assoc_req_ie)) {
 146                         wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie);
 147                         os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie),
 148                                   wpa_s->sme.assoc_req_ie_len);
 149                 } else
 150                         wpa_s->sme.assoc_req_ie_len = 0;
 151                 wpabuf_free(wps_ie);
 152                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 153 #endif /* CONFIG_WPS */
 154         } else {
 155                 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid);
 156                 wpa_s->sme.assoc_req_ie_len = 0;
 157         }
 158
 159 #ifdef CONFIG_IEEE80211R
 160         ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN);
 161         if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN)
 162                 md = ie + 2;
 163         wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0);
 164         if (md) {
 165                 /* Prepare for the next transition */
 166                 wpa_ft_prepare_auth_request(wpa_s->wpa, ie);
 167         }
 168
 169         if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) {
 170                 if (wpa_s->sme.assoc_req_ie_len + 5 <
 171                     sizeof(wpa_s->sme.assoc_req_ie)) {
 172                         struct rsn_mdie *mdie;
 173                         u8 *pos = wpa_s->sme.assoc_req_ie +
 174                                 wpa_s->sme.assoc_req_ie_len;
 175                         *pos++ = WLAN_EID_MOBILITY_DOMAIN;
 176                         *pos++ = sizeof(*mdie);
 177                         mdie = (struct rsn_mdie *) pos;
 178                         os_memcpy(mdie->mobility_domain, md,
 179                                   MOBILITY_DOMAIN_ID_LEN);
 180                         mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN];
 181                         wpa_s->sme.assoc_req_ie_len += 5;
 182                 }
 183
 184                 if (wpa_s->sme.ft_used &&
 185                     os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 &&
 186                     wpa_sm_has_ptk(wpa_s->wpa)) {
 187                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT "
 188                                 "over-the-air");
 189                         params.auth_alg = WPA_AUTH_ALG_FT;
 190                         params.ie = wpa_s->sme.ft_ies;
 191                         params.ie_len = wpa_s->sme.ft_ies_len;
 192                 }
 193         }
 194 #endif /* CONFIG_IEEE80211R */
 195
 196 #ifdef CONFIG_IEEE80211W
 197         wpa_s->sme.mfp = ssid->ieee80211w;
 198         if (ssid->ieee80211w != NO_MGMT_FRAME_PROTECTION) {
 199                 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN);
 200                 struct wpa_ie_data _ie;
 201                 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 &&
 202                     _ie.capabilities &
 203                     (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) {
 204                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports "
 205                                 "MFP: require MFP");
 206                         wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED;
 207                 }
 208         }
 209 #endif /* CONFIG_IEEE80211W */
 210
 211 #ifdef CONFIG_P2P
 212         if (wpa_s->global->p2p) {
 213                 u8 *pos;
 214                 size_t len;
 215                 int res;
 216                 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len;
 217                 len = sizeof(wpa_s->sme.assoc_req_ie) -
 218                         wpa_s->sme.assoc_req_ie_len;
 219                 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len,
 220                                             ssid->p2p_group);
 221                 if (res >= 0)
 222                         wpa_s->sme.assoc_req_ie_len += res;
 223         }
 224 #endif /* CONFIG_P2P */
 225
 226 #ifdef CONFIG_HS20
 227         if (wpa_s->conf->hs20) {
 228                 struct wpabuf *hs20;
 229                 hs20 = wpabuf_alloc(20);
 230                 if (hs20) {
 231                         wpas_hs20_add_indication(hs20);
 232                         os_memcpy(wpa_s->sme.assoc_req_ie +
 233                                   wpa_s->sme.assoc_req_ie_len,
 234                                   wpabuf_head(hs20), wpabuf_len(hs20));
 235                         wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
 236                         wpabuf_free(hs20);
 237                 }
 238         }
 239 #endif /* CONFIG_HS20 */
 240
 241 #ifdef CONFIG_INTERWORKING
 242         if (wpa_s->conf->interworking) {
 243                 u8 *pos = wpa_s->sme.assoc_req_ie;
 244                 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
 245                         pos += 2 + pos[1];
 246                 os_memmove(pos + 6, pos,
 247                            wpa_s->sme.assoc_req_ie_len -
 248                            (pos - wpa_s->sme.assoc_req_ie));
 249                 wpa_s->sme.assoc_req_ie_len += 6;
 250                 *pos++ = WLAN_EID_EXT_CAPAB;
 251                 *pos++ = 4;
 252                 *pos++ = 0x00;
 253                 *pos++ = 0x00;
 254                 *pos++ = 0x00;
 255                 *pos++ = 0x80; /* Bit 31 - Interworking */
 256         }
 257 #endif /* CONFIG_INTERWORKING */
 258
 259         wpa_supplicant_cancel_sched_scan(wpa_s);
 260         wpa_supplicant_cancel_scan(wpa_s);
 261
 262         wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
 263                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 264                 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 265
 266         wpa_clear_keys(wpa_s, bss->bssid);
 267         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 268         old_ssid = wpa_s->current_ssid;
 269         wpa_s->current_ssid = ssid;
 270         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 271         wpa_supplicant_initiate_eapol(wpa_s);
 272         if (old_ssid != wpa_s->current_ssid)
 273                 wpas_notify_network_changed(wpa_s);
 274
 275         wpa_s->sme.auth_alg = params.auth_alg;
 276         if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 277                 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
 278                         "driver failed");
 279                 wpas_connection_failed(wpa_s, bss->bssid);
 280                 wpa_supplicant_mark_disassoc(wpa_s);
 281                 return;
 282         }
 283
 284         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
 285                                NULL);
 286
 287         /*
 288          * Association will be started based on the authentication event from
 289          * the driver.
 290          */
 291 }
 292
 293
 294 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 295 {
 296         struct wpa_ssid *ssid = wpa_s->current_ssid;
 297
 298         if (ssid == NULL) {
 299                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 300                         "when network is not selected");
 301                 return;
 302         }
 303
 304         if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
 305                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 306                         "when not in authenticating state");
 307                 return;
 308         }
 309
 310         if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
 311                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
 312                         "unexpected peer " MACSTR,
 313                         MAC2STR(data->auth.peer));
 314                 return;
 315         }
 316
 317         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
 318                 " auth_type=%d status_code=%d",
 319                 MAC2STR(data->auth.peer), data->auth.auth_type,
 320                 data->auth.status_code);
 321         wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 322                     data->auth.ies, data->auth.ies_len);
 323
 324         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 325
 326         if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
 327                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status "
 328                         "code %d)", data->auth.status_code);
 329
 330                 if (data->auth.status_code !=
 331                     WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 332                     wpa_s->sme.auth_alg == data->auth.auth_type ||
 333                     wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
 334                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 335                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 336                         return;
 337                 }
 338
 339                 switch (data->auth.auth_type) {
 340                 case WLAN_AUTH_OPEN:
 341                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 342
 343                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
 344                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 345                                                  wpa_s->current_ssid);
 346                         return;
 347
 348                 case WLAN_AUTH_SHARED_KEY:
 349                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 350
 351                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
 352                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 353                                                  wpa_s->current_ssid);
 354                         return;
 355
 356                 default:
 357                         return;
 358                 }
 359         }
 360
 361 #ifdef CONFIG_IEEE80211R
 362         if (data->auth.auth_type == WLAN_AUTH_FT) {
 363                 union wpa_event_data edata;
 364                 os_memset(&edata, 0, sizeof(edata));
 365                 edata.ft_ies.ies = data->auth.ies;
 366                 edata.ft_ies.ies_len = data->auth.ies_len;
 367                 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN);
 368                 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata);
 369         }
 370 #endif /* CONFIG_IEEE80211R */
 371
 372         sme_associate(wpa_s, ssid->mode, data->auth.peer,
 373                       data->auth.auth_type);
 374 }
 375
 376
 377 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 378                    const u8 *bssid, u16 auth_type)
 379 {
 380         struct wpa_driver_associate_params params;
 381         struct ieee802_11_elems elems;
 382 #ifdef CONFIG_HT_OVERRIDES
 383         struct ieee80211_ht_capabilities htcaps;
 384         struct ieee80211_ht_capabilities htcaps_mask;
 385 #endif /* CONFIG_HT_OVERRIDES */
 386
 387         os_memset(&params, 0, sizeof(params));
 388         params.bssid = bssid;
 389         params.ssid = wpa_s->sme.ssid;
 390         params.ssid_len = wpa_s->sme.ssid_len;
 391         params.freq = wpa_s->sme.freq;
 392         params.bg_scan_period = wpa_s->current_ssid ?
 393                 wpa_s->current_ssid->bg_scan_period : -1;
 394         params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 395                 wpa_s->sme.assoc_req_ie : NULL;
 396         params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
 397         params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher);
 398         params.group_suite = cipher_suite2driver(wpa_s->group_cipher);
 399 #ifdef CONFIG_HT_OVERRIDES
 400         os_memset(&htcaps, 0, sizeof(htcaps));
 401         os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
 402         params.htcaps = (u8 *) &htcaps;
 403         params.htcaps_mask = (u8 *) &htcaps_mask;
 404         wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
 405 #endif /* CONFIG_HT_OVERRIDES */
 406 #ifdef CONFIG_IEEE80211R
 407         if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 408                 params.wpa_ie = wpa_s->sme.ft_ies;
 409                 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
 410         }
 411 #endif /* CONFIG_IEEE80211R */
 412         params.mode = mode;
 413         params.mgmt_frame_protection = wpa_s->sme.mfp;
 414         if (wpa_s->sme.prev_bssid_set)
 415                 params.prev_bssid = wpa_s->sme.prev_bssid;
 416
 417         wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 418                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 419                 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
 420                 params.freq);
 421
 422         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
 423
 424         if (params.wpa_ie == NULL ||
 425             ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 426             < 0) {
 427                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
 428                 os_memset(&elems, 0, sizeof(elems));
 429         }
 430         if (elems.rsn_ie) {
 431                 params.wpa_proto = WPA_PROTO_RSN;
 432                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
 433                                         elems.rsn_ie_len + 2);
 434         } else if (elems.wpa_ie) {
 435                 params.wpa_proto = WPA_PROTO_WPA;
 436                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
 437                                         elems.wpa_ie_len + 2);
 438         } else
 439                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
 440         if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
 441                 params.p2p = 1;
 442
 443         if (wpa_s->parent->set_sta_uapsd)
 444                 params.uapsd = wpa_s->parent->sta_uapsd;
 445         else
 446                 params.uapsd = -1;
 447
 448         if (wpa_drv_associate(wpa_s, &params) < 0) {
 449                 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
 450                         "driver failed");
 451                 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 452                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 453                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 454                 return;
 455         }
 456
 457         eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
 458                                NULL);
 459 }
 460
 461
 462 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
 463                       const u8 *ies, size_t ies_len)
 464 {
 465         if (md == NULL || ies == NULL) {
 466                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
 467                 os_free(wpa_s->sme.ft_ies);
 468                 wpa_s->sme.ft_ies = NULL;
 469                 wpa_s->sme.ft_ies_len = 0;
 470                 wpa_s->sme.ft_used = 0;
 471                 return 0;
 472         }
 473
 474         os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
 475         wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
 476         os_free(wpa_s->sme.ft_ies);
 477         wpa_s->sme.ft_ies = os_malloc(ies_len);
 478         if (wpa_s->sme.ft_ies == NULL)
 479                 return -1;
 480         os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
 481         wpa_s->sme.ft_ies_len = ies_len;
 482         return 0;
 483 }
 484
 485
 486 static void sme_deauth(struct wpa_supplicant *wpa_s)
 487 {
 488         int bssid_changed;
 489
 490         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
 491
 492         if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
 493                                    WLAN_REASON_DEAUTH_LEAVING) < 0) {
 494                 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
 495                         "failed");
 496         }
 497         wpa_s->sme.prev_bssid_set = 0;
 498
 499         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 500         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 501         os_memset(wpa_s->bssid, 0, ETH_ALEN);
 502         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
 503         if (bssid_changed)
 504                 wpas_notify_bssid_changed(wpa_s);
 505 }
 506
 507
 508 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
 509                             union wpa_event_data *data)
 510 {
 511         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
 512                 "status code %d", MAC2STR(wpa_s->pending_bssid),
 513                 data->assoc_reject.status_code);
 514
 515         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
 516
 517         /*
 518          * For now, unconditionally terminate the previous authentication. In
 519          * theory, this should not be needed, but mac80211 gets quite confused
 520          * if the authentication is left pending.. Some roaming cases might
 521          * benefit from using the previous authentication, so this could be
 522          * optimized in the future.
 523          */
 524         sme_deauth(wpa_s);
 525 }
 526
 527
 528 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
 529                               union wpa_event_data *data)
 530 {
 531         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
 532         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 533         wpa_supplicant_mark_disassoc(wpa_s);
 534 }
 535
 536
 537 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
 538                                union wpa_event_data *data)
 539 {
 540         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
 541         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 542         wpa_supplicant_mark_disassoc(wpa_s);
 543 }
 544
 545
 546 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
 547                         union wpa_event_data *data)
 548 {
 549         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
 550         if (wpa_s->sme.prev_bssid_set) {
 551                 /*
 552                  * cfg80211/mac80211 can get into somewhat confused state if
 553                  * the AP only disassociates us and leaves us in authenticated
 554                  * state. For now, force the state to be cleared to avoid
 555                  * confusing errors if we try to associate with the AP again.
 556                  */
 557                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
 558                         "driver state");
 559                 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
 560                                        WLAN_REASON_DEAUTH_LEAVING);
 561         }
 562 }
 563
 564
 565 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
 566 {
 567         struct wpa_supplicant *wpa_s = eloop_ctx;
 568         if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
 569                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
 570                 sme_deauth(wpa_s);
 571         }
 572 }
 573
 574
 575 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
 576 {
 577         struct wpa_supplicant *wpa_s = eloop_ctx;
 578         if (wpa_s->wpa_state == WPA_ASSOCIATING) {
 579                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
 580                 sme_deauth(wpa_s);
 581         }
 582 }
 583
 584
 585 void sme_state_changed(struct wpa_supplicant *wpa_s)
 586 {
 587         /* Make sure timers are cleaned up appropriately. */
 588         if (wpa_s->wpa_state != WPA_ASSOCIATING)
 589                 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
 590         if (wpa_s->wpa_state != WPA_AUTHENTICATING)
 591                 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 592 }
 593
 594
 595 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
 596                                        const u8 *prev_pending_bssid)
 597 {
 598         /*
 599          * mac80211-workaround to force deauth on failed auth cmd,
 600          * requires us to remain in authenticating state to allow the
 601          * second authentication attempt to be continued properly.
 602          */
 603         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
 604                 "to proceed after disconnection event");
 605         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 606         os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
 607
 608         /*
 609          * Re-arm authentication timer in case auth fails for whatever reason.
 610          */
 611         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 612         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
 613                                NULL);
 614 }
 615
 616
 617 void sme_deinit(struct wpa_supplicant *wpa_s)
 618 {
 619         os_free(wpa_s->sme.ft_ies);
 620         wpa_s->sme.ft_ies = NULL;
 621         wpa_s->sme.ft_ies_len = 0;
 622 #ifdef CONFIG_IEEE80211W
 623         sme_stop_sa_query(wpa_s);
 624 #endif /* CONFIG_IEEE80211W */
 625
 626         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
 627         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 628         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
 629 }
 630
 631
 632 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
 633                                    const u8 *chan_list, u8 num_channels,
 634                                    u8 num_intol)
 635 {
 636         struct ieee80211_2040_bss_coex_ie *bc_ie;
 637         struct ieee80211_2040_intol_chan_report *ic_report;
 638         struct wpabuf *buf;
 639
 640         wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR,
 641                    MAC2STR(wpa_s->bssid));
 642
 643         buf = wpabuf_alloc(2 + /* action.category + action_code */
 644                            sizeof(struct ieee80211_2040_bss_coex_ie) +
 645                            sizeof(struct ieee80211_2040_intol_chan_report) +
 646                            num_channels);
 647         if (buf == NULL)
 648                 return;
 649
 650         wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
 651         wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
 652
 653         bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
 654         bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
 655         bc_ie->length = 1;
 656         if (num_intol)
 657                 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
 658
 659         if (num_channels > 0) {
 660                 ic_report = wpabuf_put(buf, sizeof(*ic_report));
 661                 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
 662                 ic_report->length = num_channels + 1;
 663                 ic_report->op_class = 0;
 664                 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
 665                           num_channels);
 666         }
 667
 668         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
 669                                 wpa_s->own_addr, wpa_s->bssid,
 670                                 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
 671                 wpa_msg(wpa_s, MSG_INFO,
 672                         "SME: Failed to send 20/40 BSS Coexistence frame");
 673         }
 674
 675         wpabuf_free(buf);
 676 }
 677
 678
 679 /**
 680  * enum wpas_band - Frequency band
 681  * @WPAS_BAND_2GHZ: 2.4 GHz ISM band
 682  * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz)
 683  */
 684 enum wpas_band {
 685         WPAS_BAND_2GHZ,
 686         WPAS_BAND_5GHZ,
 687         WPAS_BAND_INVALID
 688 };
 689
 690 /**
 691  * freq_to_channel - Convert frequency into channel info
 692  * @channel: Buffer for returning channel number
 693  * Returns: Band (2 or 5 GHz)
 694  */
 695 static enum wpas_band freq_to_channel(int freq, u8 *channel)
 696 {
 697         enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ;
 698         u8 chan = 0;
 699
 700         if (freq >= 2412 && freq <= 2472)
 701                 chan = (freq - 2407) / 5;
 702         else if (freq == 2484)
 703                 chan = 14;
 704         else if (freq >= 5180 && freq <= 5805)
 705                 chan = (freq - 5000) / 5;
 706
 707         *channel = chan;
 708         return band;
 709 }
 710
 711
 712 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
 713 {
 714         struct wpa_bss *bss;
 715         const u8 *ie;
 716         u16 ht_cap;
 717         u8 chan_list[P2P_MAX_CHANNELS], channel;
 718         u8 num_channels = 0, num_intol = 0, i;
 719
 720         if (!wpa_s->sme.sched_obss_scan)
 721                 return 0;
 722
 723         wpa_s->sme.sched_obss_scan = 0;
 724         if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
 725                 return 1;
 726
 727         /*
 728          * Check whether AP uses regulatory triplet or channel triplet in
 729          * country info. Right now the operating class of the BSS channel
 730          * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
 731          * based on the assumption that operating class triplet is not used in
 732          * beacon frame. If the First Channel Number/Operating Extension
 733          * Identifier octet has a positive integer value of 201 or greater,
 734          * then its operating class triplet.
 735          *
 736          * TODO: If Supported Operating Classes element is present in beacon
 737          * frame, have to lookup operating class in Annex E and fill them in
 738          * 2040 coex frame.
 739          */
 740         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
 741         if (ie && (ie[1] >= 6) && (ie[5] >= 201))
 742                 return 1;
 743
 744         os_memset(chan_list, 0, sizeof(chan_list));
 745
 746         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 747                 /* Skip other band bss */
 748                 if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ)
 749                         continue;
 750
 751                 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
 752                 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
 753
 754                 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
 755                         /* Check whether the channel is already considered */
 756                         for (i = 0; i < num_channels; i++) {
 757                                 if (channel == chan_list[i])
 758                                         break;
 759                         }
 760                         if (i != num_channels)
 761                                 continue;
 762
 763                         if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
 764                                 num_intol++;
 765
 766                         chan_list[num_channels++] = channel;
 767                 }
 768         }
 769
 770         sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
 771         return 1;
 772 }
 773
 774
 775 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
 776                                           u16 num_modes,
 777                                           enum hostapd_hw_mode mode)
 778 {
 779         u16 i;
 780
 781         for (i = 0; i < num_modes; i++) {
 782                 if (modes[i].mode == mode)
 783                         return &modes[i];
 784         }
 785
 786         return NULL;
 787 }
 788
 789
 790 static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s,
 791                                         enum hostapd_hw_mode band,
 792                                         struct wpa_driver_scan_params *params)
 793 {
 794         /* Include only supported channels for the specified band */
 795         struct hostapd_hw_modes *mode;
 796         int count, i;
 797
 798         mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band);
 799         if (mode == NULL) {
 800                 /* No channels supported in this band - use empty list */
 801                 params->freqs = os_zalloc(sizeof(int));
 802                 return;
 803         }
 804
 805         params->freqs = os_zalloc((mode->num_channels + 1) * sizeof(int));
 806         if (params->freqs == NULL)
 807                 return;
 808         for (count = 0, i = 0; i < mode->num_channels; i++) {
 809                 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
 810                         continue;
 811                 params->freqs[count++] = mode->channels[i].freq;
 812         }
 813 }
 814
 815
 816 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
 817 {
 818         struct wpa_supplicant *wpa_s = eloop_ctx;
 819         struct wpa_driver_scan_params params;
 820
 821         if (!wpa_s->current_bss) {
 822                 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
 823                 return;
 824         }
 825
 826         os_memset(&params, 0, sizeof(params));
 827         wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, &params);
 828         wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
 829
 830         if (wpa_supplicant_trigger_scan(wpa_s, &params))
 831                 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
 832         else
 833                 wpa_s->sme.sched_obss_scan = 1;
 834         os_free(params.freqs);
 835
 836         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
 837                                sme_obss_scan_timeout, wpa_s, NULL);
 838 }
 839
 840
 841 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
 842 {
 843         const u8 *ie;
 844         struct wpa_bss *bss = wpa_s->current_bss;
 845         struct wpa_ssid *ssid = wpa_s->current_ssid;
 846
 847         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
 848         wpa_s->sme.sched_obss_scan = 0;
 849         if (!enable)
 850                 return;
 851
 852         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || ssid == NULL ||
 853             ssid->mode != IEEE80211_MODE_INFRA)
 854                 return; /* Not using station SME in wpa_supplicant */
 855
 856         if (!wpa_s->hw.modes ||
 857             !(wpa_s->hw.modes->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
 858                 return; /* Driver does not support HT40 */
 859
 860         if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
 861                 return; /* Not associated on 2.4 GHz band */
 862
 863         /* Check whether AP supports HT40 */
 864         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
 865         if (!ie || ie[1] < 2 ||
 866             !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
 867                 return; /* AP does not support HT40 */
 868
 869         ie = wpa_bss_get_ie(wpa_s->current_bss,
 870                             WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
 871         if (!ie || ie[1] < 14)
 872                 return; /* AP does not request OBSS scans */
 873
 874         wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
 875         if (wpa_s->sme.obss_scan_int < 10) {
 876                 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
 877                            "replaced with the minimum 10 sec",
 878                            wpa_s->sme.obss_scan_int);
 879                 wpa_s->sme.obss_scan_int = 10;
 880         }
 881         wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
 882                    wpa_s->sme.obss_scan_int);
 883         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
 884                                sme_obss_scan_timeout, wpa_s, NULL);
 885 }
 886
 887
 888 #ifdef CONFIG_IEEE80211W
 889
 890 static const unsigned int sa_query_max_timeout = 1000;
 891 static const unsigned int sa_query_retry_timeout = 201;
 892
 893 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
 894 {
 895         u32 tu;
 896         struct os_time now, passed;
 897         os_get_time(&now);
 898         os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed);
 899         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 900         if (sa_query_max_timeout < tu) {
 901                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
 902                 sme_stop_sa_query(wpa_s);
 903                 wpa_supplicant_deauthenticate(
 904                         wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
 905                 return 1;
 906         }
 907
 908         return 0;
 909 }
 910
 911
 912 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
 913                                   const u8 *trans_id)
 914 {
 915         u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
 916         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
 917                 MACSTR, MAC2STR(wpa_s->bssid));
 918         wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
 919                     trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 920         req[0] = WLAN_ACTION_SA_QUERY;
 921         req[1] = WLAN_SA_QUERY_REQUEST;
 922         os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 923         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
 924                                 wpa_s->own_addr, wpa_s->bssid,
 925                                 req, sizeof(req), 0) < 0)
 926                 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
 927                         "Request");
 928 }
 929
 930
 931 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 932 {
 933         struct wpa_supplicant *wpa_s = eloop_ctx;
 934         unsigned int timeout, sec, usec;
 935         u8 *trans_id, *nbuf;
 936
 937         if (wpa_s->sme.sa_query_count > 0 &&
 938             sme_check_sa_query_timeout(wpa_s))
 939                 return;
 940
 941         nbuf = os_realloc(wpa_s->sme.sa_query_trans_id,
 942                           (wpa_s->sme.sa_query_count + 1) *
 943                           WLAN_SA_QUERY_TR_ID_LEN);
 944         if (nbuf == NULL)
 945                 return;
 946         if (wpa_s->sme.sa_query_count == 0) {
 947                 /* Starting a new SA Query procedure */
 948                 os_get_time(&wpa_s->sme.sa_query_start);
 949         }
 950         trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 951         wpa_s->sme.sa_query_trans_id = nbuf;
 952         wpa_s->sme.sa_query_count++;
 953
 954         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 955
 956         timeout = sa_query_retry_timeout;
 957         sec = ((timeout / 1000) * 1024) / 1000;
 958         usec = (timeout % 1000) * 1024;
 959         eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
 960
 961         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
 962                 wpa_s->sme.sa_query_count);
 963
 964         sme_send_sa_query_req(wpa_s, trans_id);
 965 }
 966
 967
 968 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
 969 {
 970         sme_sa_query_timer(wpa_s, NULL);
 971 }
 972
 973
 974 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
 975 {
 976         eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
 977         os_free(wpa_s->sme.sa_query_trans_id);
 978         wpa_s->sme.sa_query_trans_id = NULL;
 979         wpa_s->sme.sa_query_count = 0;
 980 }
 981
 982
 983 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
 984                                  const u8 *da, u16 reason_code)
 985 {
 986         struct wpa_ssid *ssid;
 987
 988         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME))
 989                 return;
 990         if (wpa_s->wpa_state != WPA_COMPLETED)
 991                 return;
 992         ssid = wpa_s->current_ssid;
 993         if (ssid == NULL || ssid->ieee80211w == 0)
 994                 return;
 995         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
 996                 return;
 997         if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
 998             reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
 999                 return;
1000         if (wpa_s->sme.sa_query_count > 0)
1001                 return;
1002
1003         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1004                 "possible AP/STA state mismatch - trigger SA Query");
1005         sme_start_sa_query(wpa_s);
1006 }
1007
1008
1009 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1010                      const u8 *data, size_t len)
1011 {
1012         int i;
1013
1014         if (wpa_s->sme.sa_query_trans_id == NULL ||
1015             len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1016             data[0] != WLAN_SA_QUERY_RESPONSE)
1017                 return;
1018         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1019                 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1020
1021         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1022                 return;
1023
1024         for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1025                 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1026                               i * WLAN_SA_QUERY_TR_ID_LEN,
1027                               data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1028                         break;
1029         }
1030
1031         if (i >= wpa_s->sme.sa_query_count) {
1032                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1033                         "transaction identifier found");
1034                 return;
1035         }
1036
1037         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1038                 "from " MACSTR, MAC2STR(sa));
1039         sme_stop_sa_query(wpa_s);
1040 }
1041
1042 #endif /* CONFIG_IEEE80211W */