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 int skip_auth; 211 212 if (bss == NULL) { 213 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " 214 "the network"); 215 wpas_connect_work_done(wpa_s); 216 return; 217 } 218 219 skip_auth = wpa_s->conf->reassoc_same_bss_optim && 220 wpa_s->reassoc_same_bss; 221 wpa_s->current_bss = bss; 222 223 os_memset(¶ms, 0, sizeof(params)); 224 wpa_s->reassociate = 0; 225 226 params.freq = bss->freq; 227 params.bssid = bss->bssid; 228 params.ssid = bss->ssid; 229 params.ssid_len = bss->ssid_len; 230 params.p2p = ssid->p2p_group; 231 232 if (wpa_s->sme.ssid_len != params.ssid_len || 233 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) 234 wpa_s->sme.prev_bssid_set = 0; 235 236 wpa_s->sme.freq = params.freq; 237 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); 238 wpa_s->sme.ssid_len = params.ssid_len; 239 240 params.auth_alg = WPA_AUTH_ALG_OPEN; 241 #ifdef IEEE8021X_EAPOL 242 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 243 if (ssid->leap) { 244 if (ssid->non_leap == 0) 245 params.auth_alg = WPA_AUTH_ALG_LEAP; 246 else 247 params.auth_alg |= WPA_AUTH_ALG_LEAP; 248 } 249 } 250 #endif /* IEEE8021X_EAPOL */ 251 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", 252 params.auth_alg); 253 if (ssid->auth_alg) { 254 params.auth_alg = ssid->auth_alg; 255 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 256 "0x%x", params.auth_alg); 257 } 258 #ifdef CONFIG_SAE 259 wpa_s->sme.sae_pmksa_caching = 0; 260 if (wpa_key_mgmt_sae(ssid->key_mgmt)) { 261 const u8 *rsn; 262 struct wpa_ie_data ied; 263 264 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 265 if (!rsn) { 266 wpa_dbg(wpa_s, MSG_DEBUG, 267 "SAE enabled, but target BSS does not advertise RSN"); 268 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 && 269 wpa_key_mgmt_sae(ied.key_mgmt)) { 270 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); 271 params.auth_alg = WPA_AUTH_ALG_SAE; 272 } else { 273 wpa_dbg(wpa_s, MSG_DEBUG, 274 "SAE enabled, but target BSS does not advertise SAE AKM for RSN"); 275 } 276 } 277 #endif /* CONFIG_SAE */ 278 279 for (i = 0; i < NUM_WEP_KEYS; i++) { 280 if (ssid->wep_key_len[i]) 281 params.wep_key[i] = ssid->wep_key[i]; 282 params.wep_key_len[i] = ssid->wep_key_len[i]; 283 } 284 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 285 286 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 287 os_memset(wpa_s->bssid, 0, ETH_ALEN); 288 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 289 if (bssid_changed) 290 wpas_notify_bssid_changed(wpa_s); 291 292 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 293 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 294 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 295 int try_opportunistic; 296 try_opportunistic = (ssid->proactive_key_caching < 0 ? 297 wpa_s->conf->okc : 298 ssid->proactive_key_caching) && 299 (ssid->proto & WPA_PROTO_RSN); 300 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 301 wpa_s->current_ssid, 302 try_opportunistic) == 0) 303 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 304 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 305 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 306 wpa_s->sme.assoc_req_ie, 307 &wpa_s->sme.assoc_req_ie_len)) { 308 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 309 "key management and encryption suites"); 310 wpas_connect_work_done(wpa_s); 311 return; 312 } 313 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 314 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 315 /* 316 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 317 * use non-WPA since the scan results did not indicate that the 318 * AP is using WPA or WPA2. 319 */ 320 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 321 wpa_s->sme.assoc_req_ie_len = 0; 322 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 323 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 324 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 325 wpa_s->sme.assoc_req_ie, 326 &wpa_s->sme.assoc_req_ie_len)) { 327 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 328 "key management and encryption suites (no " 329 "scan results)"); 330 wpas_connect_work_done(wpa_s); 331 return; 332 } 333 #ifdef CONFIG_WPS 334 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 335 struct wpabuf *wps_ie; 336 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 337 if (wps_ie && wpabuf_len(wps_ie) <= 338 sizeof(wpa_s->sme.assoc_req_ie)) { 339 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); 340 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), 341 wpa_s->sme.assoc_req_ie_len); 342 } else 343 wpa_s->sme.assoc_req_ie_len = 0; 344 wpabuf_free(wps_ie); 345 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 346 #endif /* CONFIG_WPS */ 347 } else { 348 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 349 wpa_s->sme.assoc_req_ie_len = 0; 350 } 351 352 #ifdef CONFIG_IEEE80211R 353 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 354 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 355 md = ie + 2; 356 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 357 if (md) { 358 /* Prepare for the next transition */ 359 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 360 } 361 362 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { 363 if (wpa_s->sme.assoc_req_ie_len + 5 < 364 sizeof(wpa_s->sme.assoc_req_ie)) { 365 struct rsn_mdie *mdie; 366 u8 *pos = wpa_s->sme.assoc_req_ie + 367 wpa_s->sme.assoc_req_ie_len; 368 *pos++ = WLAN_EID_MOBILITY_DOMAIN; 369 *pos++ = sizeof(*mdie); 370 mdie = (struct rsn_mdie *) pos; 371 os_memcpy(mdie->mobility_domain, md, 372 MOBILITY_DOMAIN_ID_LEN); 373 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; 374 wpa_s->sme.assoc_req_ie_len += 5; 375 } 376 377 if (wpa_s->sme.ft_used && 378 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && 379 wpa_sm_has_ptk(wpa_s->wpa)) { 380 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " 381 "over-the-air"); 382 params.auth_alg = WPA_AUTH_ALG_FT; 383 params.ie = wpa_s->sme.ft_ies; 384 params.ie_len = wpa_s->sme.ft_ies_len; 385 } 386 } 387 #endif /* CONFIG_IEEE80211R */ 388 389 #ifdef CONFIG_IEEE80211W 390 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid); 391 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { 392 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 393 struct wpa_ie_data _ie; 394 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && 395 _ie.capabilities & 396 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 397 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " 398 "MFP: require MFP"); 399 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; 400 } 401 } 402 #endif /* CONFIG_IEEE80211W */ 403 404 #ifdef CONFIG_P2P 405 if (wpa_s->global->p2p) { 406 u8 *pos; 407 size_t len; 408 int res; 409 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 410 len = sizeof(wpa_s->sme.assoc_req_ie) - 411 wpa_s->sme.assoc_req_ie_len; 412 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 413 ssid->p2p_group); 414 if (res >= 0) 415 wpa_s->sme.assoc_req_ie_len += res; 416 } 417 #endif /* CONFIG_P2P */ 418 419 #ifdef CONFIG_HS20 420 if (is_hs20_network(wpa_s, ssid, bss)) { 421 struct wpabuf *hs20; 422 hs20 = wpabuf_alloc(20); 423 if (hs20) { 424 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); 425 size_t len; 426 427 wpas_hs20_add_indication(hs20, pps_mo_id); 428 len = sizeof(wpa_s->sme.assoc_req_ie) - 429 wpa_s->sme.assoc_req_ie_len; 430 if (wpabuf_len(hs20) <= len) { 431 os_memcpy(wpa_s->sme.assoc_req_ie + 432 wpa_s->sme.assoc_req_ie_len, 433 wpabuf_head(hs20), wpabuf_len(hs20)); 434 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); 435 } 436 wpabuf_free(hs20); 437 } 438 } 439 #endif /* CONFIG_HS20 */ 440 441 #ifdef CONFIG_FST 442 if (wpa_s->fst_ies) { 443 int fst_ies_len = wpabuf_len(wpa_s->fst_ies); 444 445 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <= 446 sizeof(wpa_s->sme.assoc_req_ie)) { 447 os_memcpy(wpa_s->sme.assoc_req_ie + 448 wpa_s->sme.assoc_req_ie_len, 449 wpabuf_head(wpa_s->fst_ies), 450 fst_ies_len); 451 wpa_s->sme.assoc_req_ie_len += fst_ies_len; 452 } 453 } 454 #endif /* CONFIG_FST */ 455 456 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, 457 sizeof(ext_capab)); 458 if (ext_capab_len > 0) { 459 u8 *pos = wpa_s->sme.assoc_req_ie; 460 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) 461 pos += 2 + pos[1]; 462 os_memmove(pos + ext_capab_len, pos, 463 wpa_s->sme.assoc_req_ie_len - 464 (pos - wpa_s->sme.assoc_req_ie)); 465 wpa_s->sme.assoc_req_ie_len += ext_capab_len; 466 os_memcpy(pos, ext_capab, ext_capab_len); 467 } 468 469 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { 470 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; 471 size_t len; 472 473 len = sizeof(wpa_s->sme.assoc_req_ie) - 474 wpa_s->sme.assoc_req_ie_len; 475 if (wpabuf_len(buf) <= len) { 476 os_memcpy(wpa_s->sme.assoc_req_ie + 477 wpa_s->sme.assoc_req_ie_len, 478 wpabuf_head(buf), wpabuf_len(buf)); 479 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf); 480 } 481 } 482 483 sme_auth_handle_rrm(wpa_s, bss); 484 485 #ifdef CONFIG_SAE 486 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE && 487 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0) 488 { 489 wpa_dbg(wpa_s, MSG_DEBUG, 490 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication"); 491 params.auth_alg = WPA_AUTH_ALG_OPEN; 492 wpa_s->sme.sae_pmksa_caching = 1; 493 } 494 495 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) { 496 if (start) 497 resp = sme_auth_build_sae_commit(wpa_s, ssid, 498 bss->bssid); 499 else 500 resp = sme_auth_build_sae_confirm(wpa_s); 501 if (resp == NULL) { 502 wpas_connection_failed(wpa_s, bss->bssid); 503 return; 504 } 505 params.sae_data = wpabuf_head(resp); 506 params.sae_data_len = wpabuf_len(resp); 507 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED; 508 } 509 #endif /* CONFIG_SAE */ 510 511 wpa_supplicant_cancel_sched_scan(wpa_s); 512 wpa_supplicant_cancel_scan(wpa_s); 513 514 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR 515 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 516 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); 517 518 wpa_clear_keys(wpa_s, bss->bssid); 519 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 520 old_ssid = wpa_s->current_ssid; 521 wpa_s->current_ssid = ssid; 522 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 523 wpa_supplicant_initiate_eapol(wpa_s); 524 if (old_ssid != wpa_s->current_ssid) 525 wpas_notify_network_changed(wpa_s); 526 527 #ifdef CONFIG_P2P 528 /* 529 * If multi-channel concurrency is not supported, check for any 530 * frequency conflict. In case of any frequency conflict, remove the 531 * least prioritized connection. 532 */ 533 if (wpa_s->num_multichan_concurrent < 2) { 534 int freq, num; 535 num = get_shared_radio_freqs(wpa_s, &freq, 1); 536 if (num > 0 && freq > 0 && freq != params.freq) { 537 wpa_printf(MSG_DEBUG, 538 "Conflicting frequency found (%d != %d)", 539 freq, params.freq); 540 if (wpas_p2p_handle_frequency_conflicts(wpa_s, 541 params.freq, 542 ssid) < 0) { 543 wpas_connection_failed(wpa_s, bss->bssid); 544 wpa_supplicant_mark_disassoc(wpa_s); 545 wpabuf_free(resp); 546 wpas_connect_work_done(wpa_s); 547 return; 548 } 549 } 550 } 551 #endif /* CONFIG_P2P */ 552 553 if (skip_auth) { 554 wpa_msg(wpa_s, MSG_DEBUG, 555 "SME: Skip authentication step on reassoc-to-same-BSS"); 556 wpabuf_free(resp); 557 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN); 558 return; 559 } 560 561 562 wpa_s->sme.auth_alg = params.auth_alg; 563 if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { 564 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " 565 "driver failed"); 566 wpas_connection_failed(wpa_s, bss->bssid); 567 wpa_supplicant_mark_disassoc(wpa_s); 568 wpabuf_free(resp); 569 wpas_connect_work_done(wpa_s); 570 return; 571 } 572 573 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 574 NULL); 575 576 /* 577 * Association will be started based on the authentication event from 578 * the driver. 579 */ 580 581 wpabuf_free(resp); 582 } 583 584 585 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit) 586 { 587 struct wpa_connect_work *cwork = work->ctx; 588 struct wpa_supplicant *wpa_s = work->wpa_s; 589 590 if (deinit) { 591 if (work->started) 592 wpa_s->connect_work = NULL; 593 594 wpas_connect_work_free(cwork); 595 return; 596 } 597 598 wpa_s->connect_work = work; 599 600 if (cwork->bss_removed || 601 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) || 602 wpas_network_disabled(wpa_s, cwork->ssid)) { 603 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt"); 604 wpas_connect_work_done(wpa_s); 605 return; 606 } 607 608 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1); 609 } 610 611 612 void sme_authenticate(struct wpa_supplicant *wpa_s, 613 struct wpa_bss *bss, struct wpa_ssid *ssid) 614 { 615 struct wpa_connect_work *cwork; 616 617 if (bss == NULL || ssid == NULL) 618 return; 619 if (wpa_s->connect_work) { 620 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist"); 621 return; 622 } 623 624 if (radio_work_pending(wpa_s, "sme-connect")) { 625 /* 626 * The previous sme-connect work might no longer be valid due to 627 * the fact that the BSS list was updated. In addition, it makes 628 * sense to adhere to the 'newer' decision. 629 */ 630 wpa_dbg(wpa_s, MSG_DEBUG, 631 "SME: Remove previous pending sme-connect"); 632 radio_remove_works(wpa_s, "sme-connect", 0); 633 } 634 635 cwork = os_zalloc(sizeof(*cwork)); 636 if (cwork == NULL) 637 return; 638 cwork->bss = bss; 639 cwork->ssid = ssid; 640 cwork->sme = 1; 641 642 #ifdef CONFIG_SAE 643 wpa_s->sme.sae.state = SAE_NOTHING; 644 wpa_s->sme.sae.send_confirm = 0; 645 wpa_s->sme.sae_group_index = 0; 646 #endif /* CONFIG_SAE */ 647 648 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1, 649 sme_auth_start_cb, cwork) < 0) 650 wpas_connect_work_free(cwork); 651 } 652 653 654 #ifdef CONFIG_SAE 655 656 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, 657 u16 status_code, const u8 *data, size_t len) 658 { 659 int *groups; 660 661 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " 662 "status code %u", auth_transaction, status_code); 663 664 if (auth_transaction == 1 && 665 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && 666 wpa_s->sme.sae.state == SAE_COMMITTED && 667 wpa_s->current_bss && wpa_s->current_ssid) { 668 int default_groups[] = { 19, 20, 21, 25, 26, 0 }; 669 u16 group; 670 671 groups = wpa_s->conf->sae_groups; 672 if (!groups || groups[0] <= 0) 673 groups = default_groups; 674 675 if (len < sizeof(le16)) { 676 wpa_dbg(wpa_s, MSG_DEBUG, 677 "SME: Too short SAE anti-clogging token request"); 678 return -1; 679 } 680 group = WPA_GET_LE16(data); 681 wpa_dbg(wpa_s, MSG_DEBUG, 682 "SME: SAE anti-clogging token requested (group %u)", 683 group); 684 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) != 685 WLAN_STATUS_SUCCESS) { 686 wpa_dbg(wpa_s, MSG_ERROR, 687 "SME: SAE group %u of anti-clogging request is invalid", 688 group); 689 return -1; 690 } 691 wpabuf_free(wpa_s->sme.sae_token); 692 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16), 693 len - sizeof(le16)); 694 sme_send_authentication(wpa_s, wpa_s->current_bss, 695 wpa_s->current_ssid, 1); 696 return 0; 697 } 698 699 if (auth_transaction == 1 && 700 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED && 701 wpa_s->sme.sae.state == SAE_COMMITTED && 702 wpa_s->current_bss && wpa_s->current_ssid) { 703 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported"); 704 wpa_s->sme.sae_group_index++; 705 if (sme_set_sae_group(wpa_s) < 0) 706 return -1; /* no other groups enabled */ 707 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group"); 708 sme_send_authentication(wpa_s, wpa_s->current_bss, 709 wpa_s->current_ssid, 1); 710 return 0; 711 } 712 713 if (status_code != WLAN_STATUS_SUCCESS) 714 return -1; 715 716 if (auth_transaction == 1) { 717 u16 res; 718 719 groups = wpa_s->conf->sae_groups; 720 721 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); 722 if (wpa_s->current_bss == NULL || 723 wpa_s->current_ssid == NULL) 724 return -1; 725 if (wpa_s->sme.sae.state != SAE_COMMITTED) 726 return -1; 727 if (groups && groups[0] <= 0) 728 groups = NULL; 729 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL, 730 groups); 731 if (res == SAE_SILENTLY_DISCARD) { 732 wpa_printf(MSG_DEBUG, 733 "SAE: Drop commit message due to reflection attack"); 734 return 0; 735 } 736 if (res != WLAN_STATUS_SUCCESS) 737 return -1; 738 739 if (sae_process_commit(&wpa_s->sme.sae) < 0) { 740 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer " 741 "commit"); 742 return -1; 743 } 744 745 wpabuf_free(wpa_s->sme.sae_token); 746 wpa_s->sme.sae_token = NULL; 747 sme_send_authentication(wpa_s, wpa_s->current_bss, 748 wpa_s->current_ssid, 0); 749 return 0; 750 } else if (auth_transaction == 2) { 751 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); 752 if (wpa_s->sme.sae.state != SAE_CONFIRMED) 753 return -1; 754 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0) 755 return -1; 756 wpa_s->sme.sae.state = SAE_ACCEPTED; 757 sae_clear_temp_data(&wpa_s->sme.sae); 758 return 1; 759 } 760 761 return -1; 762 } 763 #endif /* CONFIG_SAE */ 764 765 766 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) 767 { 768 struct wpa_ssid *ssid = wpa_s->current_ssid; 769 770 if (ssid == NULL) { 771 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 772 "when network is not selected"); 773 return; 774 } 775 776 if (wpa_s->wpa_state != WPA_AUTHENTICATING) { 777 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 778 "when not in authenticating state"); 779 return; 780 } 781 782 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { 783 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " 784 "unexpected peer " MACSTR, 785 MAC2STR(data->auth.peer)); 786 return; 787 } 788 789 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR 790 " auth_type=%d auth_transaction=%d status_code=%d", 791 MAC2STR(data->auth.peer), data->auth.auth_type, 792 data->auth.auth_transaction, data->auth.status_code); 793 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", 794 data->auth.ies, data->auth.ies_len); 795 796 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 797 798 #ifdef CONFIG_SAE 799 if (data->auth.auth_type == WLAN_AUTH_SAE) { 800 int res; 801 res = sme_sae_auth(wpa_s, data->auth.auth_transaction, 802 data->auth.status_code, data->auth.ies, 803 data->auth.ies_len); 804 if (res < 0) { 805 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 806 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 807 808 } 809 if (res != 1) 810 return; 811 812 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for " 813 "4-way handshake"); 814 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN, 815 wpa_s->pending_bssid); 816 } 817 #endif /* CONFIG_SAE */ 818 819 if (data->auth.status_code != WLAN_STATUS_SUCCESS) { 820 char *ie_txt = NULL; 821 822 if (data->auth.ies && data->auth.ies_len) { 823 size_t buflen = 2 * data->auth.ies_len + 1; 824 ie_txt = os_malloc(buflen); 825 if (ie_txt) { 826 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies, 827 data->auth.ies_len); 828 } 829 } 830 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR 831 " auth_type=%u auth_transaction=%u status_code=%u ie=%s", 832 MAC2STR(data->auth.peer), data->auth.auth_type, 833 data->auth.auth_transaction, data->auth.status_code, 834 ie_txt); 835 os_free(ie_txt); 836 837 if (data->auth.status_code != 838 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || 839 wpa_s->sme.auth_alg == data->auth.auth_type || 840 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { 841 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 842 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 843 return; 844 } 845 846 wpas_connect_work_done(wpa_s); 847 848 switch (data->auth.auth_type) { 849 case WLAN_AUTH_OPEN: 850 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; 851 852 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); 853 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 854 wpa_s->current_ssid); 855 return; 856 857 case WLAN_AUTH_SHARED_KEY: 858 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; 859 860 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); 861 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 862 wpa_s->current_ssid); 863 return; 864 865 default: 866 return; 867 } 868 } 869 870 #ifdef CONFIG_IEEE80211R 871 if (data->auth.auth_type == WLAN_AUTH_FT) { 872 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies, 873 data->auth.ies_len, 0, 874 data->auth.peer, NULL, 0) < 0) { 875 wpa_dbg(wpa_s, MSG_DEBUG, 876 "SME: FT Authentication response processing failed"); 877 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" 878 MACSTR 879 " reason=%d locally_generated=1", 880 MAC2STR(wpa_s->pending_bssid), 881 WLAN_REASON_DEAUTH_LEAVING); 882 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 883 wpa_supplicant_mark_disassoc(wpa_s); 884 return; 885 } 886 } 887 #endif /* CONFIG_IEEE80211R */ 888 889 sme_associate(wpa_s, ssid->mode, data->auth.peer, 890 data->auth.auth_type); 891 } 892 893 894 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, 895 const u8 *bssid, u16 auth_type) 896 { 897 struct wpa_driver_associate_params params; 898 struct ieee802_11_elems elems; 899 #ifdef CONFIG_HT_OVERRIDES 900 struct ieee80211_ht_capabilities htcaps; 901 struct ieee80211_ht_capabilities htcaps_mask; 902 #endif /* CONFIG_HT_OVERRIDES */ 903 #ifdef CONFIG_VHT_OVERRIDES 904 struct ieee80211_vht_capabilities vhtcaps; 905 struct ieee80211_vht_capabilities vhtcaps_mask; 906 #endif /* CONFIG_VHT_OVERRIDES */ 907 908 os_memset(¶ms, 0, sizeof(params)); 909 params.bssid = bssid; 910 params.ssid = wpa_s->sme.ssid; 911 params.ssid_len = wpa_s->sme.ssid_len; 912 params.freq.freq = wpa_s->sme.freq; 913 params.bg_scan_period = wpa_s->current_ssid ? 914 wpa_s->current_ssid->bg_scan_period : -1; 915 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? 916 wpa_s->sme.assoc_req_ie : NULL; 917 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 918 params.pairwise_suite = wpa_s->pairwise_cipher; 919 params.group_suite = wpa_s->group_cipher; 920 params.key_mgmt_suite = wpa_s->key_mgmt; 921 params.wpa_proto = wpa_s->wpa_proto; 922 #ifdef CONFIG_HT_OVERRIDES 923 os_memset(&htcaps, 0, sizeof(htcaps)); 924 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 925 params.htcaps = (u8 *) &htcaps; 926 params.htcaps_mask = (u8 *) &htcaps_mask; 927 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 928 #endif /* CONFIG_HT_OVERRIDES */ 929 #ifdef CONFIG_VHT_OVERRIDES 930 os_memset(&vhtcaps, 0, sizeof(vhtcaps)); 931 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); 932 params.vhtcaps = &vhtcaps; 933 params.vhtcaps_mask = &vhtcaps_mask; 934 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 935 #endif /* CONFIG_VHT_OVERRIDES */ 936 #ifdef CONFIG_IEEE80211R 937 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { 938 params.wpa_ie = wpa_s->sme.ft_ies; 939 params.wpa_ie_len = wpa_s->sme.ft_ies_len; 940 } 941 #endif /* CONFIG_IEEE80211R */ 942 params.mode = mode; 943 params.mgmt_frame_protection = wpa_s->sme.mfp; 944 params.rrm_used = wpa_s->rrm.rrm_used; 945 if (wpa_s->sme.prev_bssid_set) 946 params.prev_bssid = wpa_s->sme.prev_bssid; 947 948 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 949 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 950 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", 951 params.freq.freq); 952 953 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 954 955 if (params.wpa_ie == NULL || 956 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) 957 < 0) { 958 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); 959 os_memset(&elems, 0, sizeof(elems)); 960 } 961 if (elems.rsn_ie) { 962 params.wpa_proto = WPA_PROTO_RSN; 963 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, 964 elems.rsn_ie_len + 2); 965 } else if (elems.wpa_ie) { 966 params.wpa_proto = WPA_PROTO_WPA; 967 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, 968 elems.wpa_ie_len + 2); 969 } else if (elems.osen) { 970 params.wpa_proto = WPA_PROTO_OSEN; 971 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2, 972 elems.osen_len + 2); 973 } else 974 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 975 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) 976 params.p2p = 1; 977 978 if (wpa_s->parent->set_sta_uapsd) 979 params.uapsd = wpa_s->parent->sta_uapsd; 980 else 981 params.uapsd = -1; 982 983 if (wpa_drv_associate(wpa_s, ¶ms) < 0) { 984 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " 985 "driver failed"); 986 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 987 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 988 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 989 return; 990 } 991 992 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, 993 NULL); 994 } 995 996 997 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, 998 const u8 *ies, size_t ies_len) 999 { 1000 if (md == NULL || ies == NULL) { 1001 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); 1002 os_free(wpa_s->sme.ft_ies); 1003 wpa_s->sme.ft_ies = NULL; 1004 wpa_s->sme.ft_ies_len = 0; 1005 wpa_s->sme.ft_used = 0; 1006 return 0; 1007 } 1008 1009 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 1010 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); 1011 os_free(wpa_s->sme.ft_ies); 1012 wpa_s->sme.ft_ies = os_malloc(ies_len); 1013 if (wpa_s->sme.ft_ies == NULL) 1014 return -1; 1015 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); 1016 wpa_s->sme.ft_ies_len = ies_len; 1017 return 0; 1018 } 1019 1020 1021 static void sme_deauth(struct wpa_supplicant *wpa_s) 1022 { 1023 int bssid_changed; 1024 1025 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1026 1027 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1028 WLAN_REASON_DEAUTH_LEAVING) < 0) { 1029 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " 1030 "failed"); 1031 } 1032 wpa_s->sme.prev_bssid_set = 0; 1033 1034 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1035 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1036 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1037 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1038 if (bssid_changed) 1039 wpas_notify_bssid_changed(wpa_s); 1040 } 1041 1042 1043 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, 1044 union wpa_event_data *data) 1045 { 1046 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " 1047 "status code %d", MAC2STR(wpa_s->pending_bssid), 1048 data->assoc_reject.status_code); 1049 1050 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1051 1052 #ifdef CONFIG_SAE 1053 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid && 1054 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) { 1055 wpa_dbg(wpa_s, MSG_DEBUG, 1056 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication"); 1057 wpa_sm_aborted_cached(wpa_s->wpa); 1058 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid); 1059 if (wpa_s->current_bss) { 1060 struct wpa_bss *bss = wpa_s->current_bss; 1061 struct wpa_ssid *ssid = wpa_s->current_ssid; 1062 1063 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1064 WLAN_REASON_DEAUTH_LEAVING); 1065 wpas_connect_work_done(wpa_s); 1066 wpa_supplicant_mark_disassoc(wpa_s); 1067 wpa_supplicant_connect(wpa_s, bss, ssid); 1068 return; 1069 } 1070 } 1071 #endif /* CONFIG_SAE */ 1072 1073 /* 1074 * For now, unconditionally terminate the previous authentication. In 1075 * theory, this should not be needed, but mac80211 gets quite confused 1076 * if the authentication is left pending.. Some roaming cases might 1077 * benefit from using the previous authentication, so this could be 1078 * optimized in the future. 1079 */ 1080 sme_deauth(wpa_s); 1081 } 1082 1083 1084 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, 1085 union wpa_event_data *data) 1086 { 1087 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); 1088 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1089 wpa_supplicant_mark_disassoc(wpa_s); 1090 } 1091 1092 1093 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, 1094 union wpa_event_data *data) 1095 { 1096 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); 1097 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1098 wpa_supplicant_mark_disassoc(wpa_s); 1099 } 1100 1101 1102 void sme_event_disassoc(struct wpa_supplicant *wpa_s, 1103 struct disassoc_info *info) 1104 { 1105 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); 1106 if (wpa_s->sme.prev_bssid_set) { 1107 /* 1108 * cfg80211/mac80211 can get into somewhat confused state if 1109 * the AP only disassociates us and leaves us in authenticated 1110 * state. For now, force the state to be cleared to avoid 1111 * confusing errors if we try to associate with the AP again. 1112 */ 1113 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " 1114 "driver state"); 1115 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, 1116 WLAN_REASON_DEAUTH_LEAVING); 1117 } 1118 } 1119 1120 1121 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) 1122 { 1123 struct wpa_supplicant *wpa_s = eloop_ctx; 1124 if (wpa_s->wpa_state == WPA_AUTHENTICATING) { 1125 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); 1126 sme_deauth(wpa_s); 1127 } 1128 } 1129 1130 1131 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) 1132 { 1133 struct wpa_supplicant *wpa_s = eloop_ctx; 1134 if (wpa_s->wpa_state == WPA_ASSOCIATING) { 1135 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); 1136 sme_deauth(wpa_s); 1137 } 1138 } 1139 1140 1141 void sme_state_changed(struct wpa_supplicant *wpa_s) 1142 { 1143 /* Make sure timers are cleaned up appropriately. */ 1144 if (wpa_s->wpa_state != WPA_ASSOCIATING) 1145 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1146 if (wpa_s->wpa_state != WPA_AUTHENTICATING) 1147 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1148 } 1149 1150 1151 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, 1152 const u8 *prev_pending_bssid) 1153 { 1154 /* 1155 * mac80211-workaround to force deauth on failed auth cmd, 1156 * requires us to remain in authenticating state to allow the 1157 * second authentication attempt to be continued properly. 1158 */ 1159 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " 1160 "to proceed after disconnection event"); 1161 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 1162 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); 1163 1164 /* 1165 * Re-arm authentication timer in case auth fails for whatever reason. 1166 */ 1167 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1168 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 1169 NULL); 1170 } 1171 1172 1173 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s) 1174 { 1175 wpa_s->sme.prev_bssid_set = 0; 1176 #ifdef CONFIG_SAE 1177 wpabuf_free(wpa_s->sme.sae_token); 1178 wpa_s->sme.sae_token = NULL; 1179 sae_clear_data(&wpa_s->sme.sae); 1180 #endif /* CONFIG_SAE */ 1181 #ifdef CONFIG_IEEE80211R 1182 if (wpa_s->sme.ft_ies) 1183 sme_update_ft_ies(wpa_s, NULL, NULL, 0); 1184 #endif /* CONFIG_IEEE80211R */ 1185 } 1186 1187 1188 void sme_deinit(struct wpa_supplicant *wpa_s) 1189 { 1190 os_free(wpa_s->sme.ft_ies); 1191 wpa_s->sme.ft_ies = NULL; 1192 wpa_s->sme.ft_ies_len = 0; 1193 #ifdef CONFIG_IEEE80211W 1194 sme_stop_sa_query(wpa_s); 1195 #endif /* CONFIG_IEEE80211W */ 1196 sme_clear_on_disassoc(wpa_s); 1197 1198 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1199 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1200 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 1201 } 1202 1203 1204 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, 1205 const u8 *chan_list, u8 num_channels, 1206 u8 num_intol) 1207 { 1208 struct ieee80211_2040_bss_coex_ie *bc_ie; 1209 struct ieee80211_2040_intol_chan_report *ic_report; 1210 struct wpabuf *buf; 1211 1212 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR 1213 " (num_channels=%u num_intol=%u)", 1214 MAC2STR(wpa_s->bssid), num_channels, num_intol); 1215 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels", 1216 chan_list, num_channels); 1217 1218 buf = wpabuf_alloc(2 + /* action.category + action_code */ 1219 sizeof(struct ieee80211_2040_bss_coex_ie) + 1220 sizeof(struct ieee80211_2040_intol_chan_report) + 1221 num_channels); 1222 if (buf == NULL) 1223 return; 1224 1225 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); 1226 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); 1227 1228 bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); 1229 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; 1230 bc_ie->length = 1; 1231 if (num_intol) 1232 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; 1233 1234 if (num_channels > 0) { 1235 ic_report = wpabuf_put(buf, sizeof(*ic_report)); 1236 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; 1237 ic_report->length = num_channels + 1; 1238 ic_report->op_class = 0; 1239 os_memcpy(wpabuf_put(buf, num_channels), chan_list, 1240 num_channels); 1241 } 1242 1243 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 1244 wpa_s->own_addr, wpa_s->bssid, 1245 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 1246 wpa_msg(wpa_s, MSG_INFO, 1247 "SME: Failed to send 20/40 BSS Coexistence frame"); 1248 } 1249 1250 wpabuf_free(buf); 1251 } 1252 1253 1254 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) 1255 { 1256 struct wpa_bss *bss; 1257 const u8 *ie; 1258 u16 ht_cap; 1259 u8 chan_list[P2P_MAX_CHANNELS], channel; 1260 u8 num_channels = 0, num_intol = 0, i; 1261 1262 if (!wpa_s->sme.sched_obss_scan) 1263 return 0; 1264 1265 wpa_s->sme.sched_obss_scan = 0; 1266 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) 1267 return 1; 1268 1269 /* 1270 * Check whether AP uses regulatory triplet or channel triplet in 1271 * country info. Right now the operating class of the BSS channel 1272 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), 1273 * based on the assumption that operating class triplet is not used in 1274 * beacon frame. If the First Channel Number/Operating Extension 1275 * Identifier octet has a positive integer value of 201 or greater, 1276 * then its operating class triplet. 1277 * 1278 * TODO: If Supported Operating Classes element is present in beacon 1279 * frame, have to lookup operating class in Annex E and fill them in 1280 * 2040 coex frame. 1281 */ 1282 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); 1283 if (ie && (ie[1] >= 6) && (ie[5] >= 201)) 1284 return 1; 1285 1286 os_memset(chan_list, 0, sizeof(chan_list)); 1287 1288 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1289 /* Skip other band bss */ 1290 enum hostapd_hw_mode mode; 1291 mode = ieee80211_freq_to_chan(bss->freq, &channel); 1292 if (mode != HOSTAPD_MODE_IEEE80211G && 1293 mode != HOSTAPD_MODE_IEEE80211B) 1294 continue; 1295 1296 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); 1297 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; 1298 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR 1299 " freq=%u chan=%u ht_cap=0x%x", 1300 MAC2STR(bss->bssid), bss->freq, channel, ht_cap); 1301 1302 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { 1303 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) 1304 num_intol++; 1305 1306 /* Check whether the channel is already considered */ 1307 for (i = 0; i < num_channels; i++) { 1308 if (channel == chan_list[i]) 1309 break; 1310 } 1311 if (i != num_channels) 1312 continue; 1313 1314 chan_list[num_channels++] = channel; 1315 } 1316 } 1317 1318 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); 1319 return 1; 1320 } 1321 1322 1323 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 1324 u16 num_modes, 1325 enum hostapd_hw_mode mode) 1326 { 1327 u16 i; 1328 1329 for (i = 0; i < num_modes; i++) { 1330 if (modes[i].mode == mode) 1331 return &modes[i]; 1332 } 1333 1334 return NULL; 1335 } 1336 1337 1338 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s, 1339 struct wpa_driver_scan_params *params) 1340 { 1341 /* Include only affected channels */ 1342 struct hostapd_hw_modes *mode; 1343 int count, i; 1344 int start, end; 1345 1346 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 1347 HOSTAPD_MODE_IEEE80211G); 1348 if (mode == NULL) { 1349 /* No channels supported in this band - use empty list */ 1350 params->freqs = os_zalloc(sizeof(int)); 1351 return; 1352 } 1353 1354 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN && 1355 wpa_s->current_bss) { 1356 const u8 *ie; 1357 1358 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION); 1359 if (ie && ie[1] >= 2) { 1360 u8 o; 1361 1362 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK; 1363 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE) 1364 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE; 1365 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW) 1366 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW; 1367 } 1368 } 1369 1370 start = wpa_s->assoc_freq - 10; 1371 end = wpa_s->assoc_freq + 10; 1372 switch (wpa_s->sme.ht_sec_chan) { 1373 case HT_SEC_CHAN_UNKNOWN: 1374 /* HT40+ possible on channels 1..9 */ 1375 if (wpa_s->assoc_freq <= 2452) 1376 start -= 20; 1377 /* HT40- possible on channels 5-13 */ 1378 if (wpa_s->assoc_freq >= 2432) 1379 end += 20; 1380 break; 1381 case HT_SEC_CHAN_ABOVE: 1382 end += 20; 1383 break; 1384 case HT_SEC_CHAN_BELOW: 1385 start -= 20; 1386 break; 1387 } 1388 wpa_printf(MSG_DEBUG, 1389 "OBSS: assoc_freq %d possible affected range %d-%d", 1390 wpa_s->assoc_freq, start, end); 1391 1392 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); 1393 if (params->freqs == NULL) 1394 return; 1395 for (count = 0, i = 0; i < mode->num_channels; i++) { 1396 int freq; 1397 1398 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) 1399 continue; 1400 freq = mode->channels[i].freq; 1401 if (freq - 10 >= end || freq + 10 <= start) 1402 continue; /* not affected */ 1403 params->freqs[count++] = freq; 1404 } 1405 } 1406 1407 1408 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1409 { 1410 struct wpa_supplicant *wpa_s = eloop_ctx; 1411 struct wpa_driver_scan_params params; 1412 1413 if (!wpa_s->current_bss) { 1414 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); 1415 return; 1416 } 1417 1418 os_memset(¶ms, 0, sizeof(params)); 1419 wpa_obss_scan_freqs_list(wpa_s, ¶ms); 1420 params.low_priority = 1; 1421 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); 1422 1423 if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) 1424 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); 1425 else 1426 wpa_s->sme.sched_obss_scan = 1; 1427 os_free(params.freqs); 1428 1429 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1430 sme_obss_scan_timeout, wpa_s, NULL); 1431 } 1432 1433 1434 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) 1435 { 1436 const u8 *ie; 1437 struct wpa_bss *bss = wpa_s->current_bss; 1438 struct wpa_ssid *ssid = wpa_s->current_ssid; 1439 struct hostapd_hw_modes *hw_mode = NULL; 1440 int i; 1441 1442 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 1443 wpa_s->sme.sched_obss_scan = 0; 1444 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN; 1445 if (!enable) 1446 return; 1447 1448 /* 1449 * Schedule OBSS scan if driver is using station SME in wpa_supplicant 1450 * or it expects OBSS scan to be performed by wpa_supplicant. 1451 */ 1452 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || 1453 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || 1454 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) 1455 return; 1456 1457 if (!wpa_s->hw.modes) 1458 return; 1459 1460 /* only HT caps in 11g mode are relevant */ 1461 for (i = 0; i < wpa_s->hw.num_modes; i++) { 1462 hw_mode = &wpa_s->hw.modes[i]; 1463 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) 1464 break; 1465 } 1466 1467 /* Driver does not support HT40 for 11g or doesn't have 11g. */ 1468 if (i == wpa_s->hw.num_modes || !hw_mode || 1469 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1470 return; 1471 1472 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) 1473 return; /* Not associated on 2.4 GHz band */ 1474 1475 /* Check whether AP supports HT40 */ 1476 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); 1477 if (!ie || ie[1] < 2 || 1478 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1479 return; /* AP does not support HT40 */ 1480 1481 ie = wpa_bss_get_ie(wpa_s->current_bss, 1482 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); 1483 if (!ie || ie[1] < 14) 1484 return; /* AP does not request OBSS scans */ 1485 1486 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); 1487 if (wpa_s->sme.obss_scan_int < 10) { 1488 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " 1489 "replaced with the minimum 10 sec", 1490 wpa_s->sme.obss_scan_int); 1491 wpa_s->sme.obss_scan_int = 10; 1492 } 1493 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", 1494 wpa_s->sme.obss_scan_int); 1495 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1496 sme_obss_scan_timeout, wpa_s, NULL); 1497 } 1498 1499 1500 #ifdef CONFIG_IEEE80211W 1501 1502 static const unsigned int sa_query_max_timeout = 1000; 1503 static const unsigned int sa_query_retry_timeout = 201; 1504 1505 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) 1506 { 1507 u32 tu; 1508 struct os_reltime now, passed; 1509 os_get_reltime(&now); 1510 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed); 1511 tu = (passed.sec * 1000000 + passed.usec) / 1024; 1512 if (sa_query_max_timeout < tu) { 1513 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); 1514 sme_stop_sa_query(wpa_s); 1515 wpa_supplicant_deauthenticate( 1516 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); 1517 return 1; 1518 } 1519 1520 return 0; 1521 } 1522 1523 1524 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, 1525 const u8 *trans_id) 1526 { 1527 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; 1528 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " 1529 MACSTR, MAC2STR(wpa_s->bssid)); 1530 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", 1531 trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1532 req[0] = WLAN_ACTION_SA_QUERY; 1533 req[1] = WLAN_SA_QUERY_REQUEST; 1534 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1535 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 1536 wpa_s->own_addr, wpa_s->bssid, 1537 req, sizeof(req), 0) < 0) 1538 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " 1539 "Request"); 1540 } 1541 1542 1543 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) 1544 { 1545 struct wpa_supplicant *wpa_s = eloop_ctx; 1546 unsigned int timeout, sec, usec; 1547 u8 *trans_id, *nbuf; 1548 1549 if (wpa_s->sme.sa_query_count > 0 && 1550 sme_check_sa_query_timeout(wpa_s)) 1551 return; 1552 1553 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, 1554 wpa_s->sme.sa_query_count + 1, 1555 WLAN_SA_QUERY_TR_ID_LEN); 1556 if (nbuf == NULL) 1557 return; 1558 if (wpa_s->sme.sa_query_count == 0) { 1559 /* Starting a new SA Query procedure */ 1560 os_get_reltime(&wpa_s->sme.sa_query_start); 1561 } 1562 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; 1563 wpa_s->sme.sa_query_trans_id = nbuf; 1564 wpa_s->sme.sa_query_count++; 1565 1566 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) { 1567 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID"); 1568 return; 1569 } 1570 1571 timeout = sa_query_retry_timeout; 1572 sec = ((timeout / 1000) * 1024) / 1000; 1573 usec = (timeout % 1000) * 1024; 1574 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); 1575 1576 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", 1577 wpa_s->sme.sa_query_count); 1578 1579 sme_send_sa_query_req(wpa_s, trans_id); 1580 } 1581 1582 1583 static void sme_start_sa_query(struct wpa_supplicant *wpa_s) 1584 { 1585 sme_sa_query_timer(wpa_s, NULL); 1586 } 1587 1588 1589 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) 1590 { 1591 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); 1592 os_free(wpa_s->sme.sa_query_trans_id); 1593 wpa_s->sme.sa_query_trans_id = NULL; 1594 wpa_s->sme.sa_query_count = 0; 1595 } 1596 1597 1598 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, 1599 const u8 *da, u16 reason_code) 1600 { 1601 struct wpa_ssid *ssid; 1602 struct os_reltime now; 1603 1604 if (wpa_s->wpa_state != WPA_COMPLETED) 1605 return; 1606 ssid = wpa_s->current_ssid; 1607 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION) 1608 return; 1609 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1610 return; 1611 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && 1612 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) 1613 return; 1614 if (wpa_s->sme.sa_query_count > 0) 1615 return; 1616 1617 os_get_reltime(&now); 1618 if (wpa_s->sme.last_unprot_disconnect.sec && 1619 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10)) 1620 return; /* limit SA Query procedure frequency */ 1621 wpa_s->sme.last_unprot_disconnect = now; 1622 1623 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " 1624 "possible AP/STA state mismatch - trigger SA Query"); 1625 sme_start_sa_query(wpa_s); 1626 } 1627 1628 1629 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, 1630 const u8 *data, size_t len) 1631 { 1632 int i; 1633 1634 if (wpa_s->sme.sa_query_trans_id == NULL || 1635 len < 1 + WLAN_SA_QUERY_TR_ID_LEN || 1636 data[0] != WLAN_SA_QUERY_RESPONSE) 1637 return; 1638 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " 1639 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); 1640 1641 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1642 return; 1643 1644 for (i = 0; i < wpa_s->sme.sa_query_count; i++) { 1645 if (os_memcmp(wpa_s->sme.sa_query_trans_id + 1646 i * WLAN_SA_QUERY_TR_ID_LEN, 1647 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) 1648 break; 1649 } 1650 1651 if (i >= wpa_s->sme.sa_query_count) { 1652 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " 1653 "transaction identifier found"); 1654 return; 1655 } 1656 1657 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " 1658 "from " MACSTR, MAC2STR(sa)); 1659 sme_stop_sa_query(wpa_s); 1660 } 1661 1662 #endif /* CONFIG_IEEE80211W */ 1663