sme.c revision 337817
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 35static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); 36static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); 37static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); 38#ifdef CONFIG_IEEE80211W 39static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); 40#endif /* CONFIG_IEEE80211W */ 41 42 43#ifdef CONFIG_SAE 44 45static 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 56static 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 84static 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 122static 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 */ 145static 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_s->drv_rrm_flags & WPA_DRIVER_FLAGS_SUPPORT_RRM)) { 168 wpa_printf(MSG_DEBUG, 169 "RRM: Insufficient RRM support in driver - do not use RRM"); 170 return; 171 } 172 173 if (sizeof(wpa_s->sme.assoc_req_ie) < 174 wpa_s->sme.assoc_req_ie_len + rrm_ie_len + 2) { 175 wpa_printf(MSG_INFO, 176 "RRM: Unable to use RRM, no room for RRM IE"); 177 return; 178 } 179 180 wpa_printf(MSG_DEBUG, "RRM: Adding RRM IE to Association Request"); 181 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 182 os_memset(pos, 0, 2 + rrm_ie_len); 183 *pos++ = WLAN_EID_RRM_ENABLED_CAPABILITIES; 184 *pos++ = rrm_ie_len; 185 186 /* Set supported capabilites flags */ 187 if (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_TX_POWER_INSERTION) 188 *pos |= WLAN_RRM_CAPS_LINK_MEASUREMENT; 189 190 if (wpa_s->lci) 191 pos[1] |= WLAN_RRM_CAPS_LCI_MEASUREMENT; 192 193 wpa_s->sme.assoc_req_ie_len += rrm_ie_len + 2; 194 wpa_s->rrm.rrm_used = 1; 195} 196 197 198static void sme_send_authentication(struct wpa_supplicant *wpa_s, 199 struct wpa_bss *bss, struct wpa_ssid *ssid, 200 int start) 201{ 202 struct wpa_driver_auth_params params; 203 struct wpa_ssid *old_ssid; 204#ifdef CONFIG_IEEE80211R 205 const u8 *ie; 206#endif /* CONFIG_IEEE80211R */ 207#ifdef CONFIG_IEEE80211R 208 const u8 *md = NULL; 209#endif /* CONFIG_IEEE80211R */ 210 int i, bssid_changed; 211 struct wpabuf *resp = NULL; 212 u8 ext_capab[18]; 213 int ext_capab_len; 214 int skip_auth; 215#ifdef CONFIG_MBO 216 const u8 *mbo; 217#endif /* CONFIG_MBO */ 218 219 if (bss == NULL) { 220 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " 221 "the network"); 222 wpas_connect_work_done(wpa_s); 223 return; 224 } 225 226 skip_auth = wpa_s->conf->reassoc_same_bss_optim && 227 wpa_s->reassoc_same_bss; 228 wpa_s->current_bss = bss; 229 230 os_memset(¶ms, 0, sizeof(params)); 231 wpa_s->reassociate = 0; 232 233 params.freq = bss->freq; 234 params.bssid = bss->bssid; 235 params.ssid = bss->ssid; 236 params.ssid_len = bss->ssid_len; 237 params.p2p = ssid->p2p_group; 238 239 if (wpa_s->sme.ssid_len != params.ssid_len || 240 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) 241 wpa_s->sme.prev_bssid_set = 0; 242 243 wpa_s->sme.freq = params.freq; 244 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); 245 wpa_s->sme.ssid_len = params.ssid_len; 246 247 params.auth_alg = WPA_AUTH_ALG_OPEN; 248#ifdef IEEE8021X_EAPOL 249 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 250 if (ssid->leap) { 251 if (ssid->non_leap == 0) 252 params.auth_alg = WPA_AUTH_ALG_LEAP; 253 else 254 params.auth_alg |= WPA_AUTH_ALG_LEAP; 255 } 256 } 257#endif /* IEEE8021X_EAPOL */ 258 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", 259 params.auth_alg); 260 if (ssid->auth_alg) { 261 params.auth_alg = ssid->auth_alg; 262 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 263 "0x%x", params.auth_alg); 264 } 265#ifdef CONFIG_SAE 266 wpa_s->sme.sae_pmksa_caching = 0; 267 if (wpa_key_mgmt_sae(ssid->key_mgmt)) { 268 const u8 *rsn; 269 struct wpa_ie_data ied; 270 271 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 272 if (!rsn) { 273 wpa_dbg(wpa_s, MSG_DEBUG, 274 "SAE enabled, but target BSS does not advertise RSN"); 275 } else if (wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0 && 276 wpa_key_mgmt_sae(ied.key_mgmt)) { 277 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); 278 params.auth_alg = WPA_AUTH_ALG_SAE; 279 } else { 280 wpa_dbg(wpa_s, MSG_DEBUG, 281 "SAE enabled, but target BSS does not advertise SAE AKM for RSN"); 282 } 283 } 284#endif /* CONFIG_SAE */ 285 286 for (i = 0; i < NUM_WEP_KEYS; i++) { 287 if (ssid->wep_key_len[i]) 288 params.wep_key[i] = ssid->wep_key[i]; 289 params.wep_key_len[i] = ssid->wep_key_len[i]; 290 } 291 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 292 293 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 294 os_memset(wpa_s->bssid, 0, ETH_ALEN); 295 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 296 if (bssid_changed) 297 wpas_notify_bssid_changed(wpa_s); 298 299 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 300 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 301 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 302 int try_opportunistic; 303 try_opportunistic = (ssid->proactive_key_caching < 0 ? 304 wpa_s->conf->okc : 305 ssid->proactive_key_caching) && 306 (ssid->proto & WPA_PROTO_RSN); 307 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 308 wpa_s->current_ssid, 309 try_opportunistic) == 0) 310 eapol_sm_notify_pmkid_attempt(wpa_s->eapol); 311 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 312 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 313 wpa_s->sme.assoc_req_ie, 314 &wpa_s->sme.assoc_req_ie_len)) { 315 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 316 "key management and encryption suites"); 317 wpas_connect_work_done(wpa_s); 318 return; 319 } 320 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 321 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 322 /* 323 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 324 * use non-WPA since the scan results did not indicate that the 325 * AP is using WPA or WPA2. 326 */ 327 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 328 wpa_s->sme.assoc_req_ie_len = 0; 329 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 330 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 331 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 332 wpa_s->sme.assoc_req_ie, 333 &wpa_s->sme.assoc_req_ie_len)) { 334 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 335 "key management and encryption suites (no " 336 "scan results)"); 337 wpas_connect_work_done(wpa_s); 338 return; 339 } 340#ifdef CONFIG_WPS 341 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 342 struct wpabuf *wps_ie; 343 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 344 if (wps_ie && wpabuf_len(wps_ie) <= 345 sizeof(wpa_s->sme.assoc_req_ie)) { 346 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); 347 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), 348 wpa_s->sme.assoc_req_ie_len); 349 } else 350 wpa_s->sme.assoc_req_ie_len = 0; 351 wpabuf_free(wps_ie); 352 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 353#endif /* CONFIG_WPS */ 354 } else { 355 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 356 wpa_s->sme.assoc_req_ie_len = 0; 357 } 358 359#ifdef CONFIG_IEEE80211R 360 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 361 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 362 md = ie + 2; 363 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 364 if (md) { 365 /* Prepare for the next transition */ 366 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 367 } 368 369 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { 370 if (wpa_s->sme.assoc_req_ie_len + 5 < 371 sizeof(wpa_s->sme.assoc_req_ie)) { 372 struct rsn_mdie *mdie; 373 u8 *pos = wpa_s->sme.assoc_req_ie + 374 wpa_s->sme.assoc_req_ie_len; 375 *pos++ = WLAN_EID_MOBILITY_DOMAIN; 376 *pos++ = sizeof(*mdie); 377 mdie = (struct rsn_mdie *) pos; 378 os_memcpy(mdie->mobility_domain, md, 379 MOBILITY_DOMAIN_ID_LEN); 380 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; 381 wpa_s->sme.assoc_req_ie_len += 5; 382 } 383 384 if (wpa_s->sme.ft_used && 385 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && 386 wpa_sm_has_ptk(wpa_s->wpa)) { 387 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " 388 "over-the-air"); 389 params.auth_alg = WPA_AUTH_ALG_FT; 390 params.ie = wpa_s->sme.ft_ies; 391 params.ie_len = wpa_s->sme.ft_ies_len; 392 } 393 } 394#endif /* CONFIG_IEEE80211R */ 395 396#ifdef CONFIG_IEEE80211W 397 wpa_s->sme.mfp = wpas_get_ssid_pmf(wpa_s, ssid); 398 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { 399 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 400 struct wpa_ie_data _ie; 401 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && 402 _ie.capabilities & 403 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 404 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " 405 "MFP: require MFP"); 406 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; 407 } 408 } 409#endif /* CONFIG_IEEE80211W */ 410 411#ifdef CONFIG_P2P 412 if (wpa_s->global->p2p) { 413 u8 *pos; 414 size_t len; 415 int res; 416 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 417 len = sizeof(wpa_s->sme.assoc_req_ie) - 418 wpa_s->sme.assoc_req_ie_len; 419 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 420 ssid->p2p_group); 421 if (res >= 0) 422 wpa_s->sme.assoc_req_ie_len += res; 423 } 424#endif /* CONFIG_P2P */ 425 426#ifdef CONFIG_FST 427 if (wpa_s->fst_ies) { 428 int fst_ies_len = wpabuf_len(wpa_s->fst_ies); 429 430 if (wpa_s->sme.assoc_req_ie_len + fst_ies_len <= 431 sizeof(wpa_s->sme.assoc_req_ie)) { 432 os_memcpy(wpa_s->sme.assoc_req_ie + 433 wpa_s->sme.assoc_req_ie_len, 434 wpabuf_head(wpa_s->fst_ies), 435 fst_ies_len); 436 wpa_s->sme.assoc_req_ie_len += fst_ies_len; 437 } 438 } 439#endif /* CONFIG_FST */ 440 441 sme_auth_handle_rrm(wpa_s, bss); 442 443#ifdef CONFIG_MBO 444 mbo = wpa_bss_get_vendor_ie(bss, MBO_IE_VENDOR_TYPE); 445 if (mbo) { 446 int len; 447 448 len = wpas_mbo_supp_op_class_ie( 449 wpa_s, bss->freq, 450 wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len, 451 sizeof(wpa_s->sme.assoc_req_ie) - 452 wpa_s->sme.assoc_req_ie_len); 453 if (len > 0) 454 wpa_s->sme.assoc_req_ie_len += len; 455 } 456#endif /* CONFIG_MBO */ 457 458 if (params.p2p) 459 wpa_drv_get_ext_capa(wpa_s, WPA_IF_P2P_CLIENT); 460 else 461 wpa_drv_get_ext_capa(wpa_s, WPA_IF_STATION); 462 463 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab, 464 sizeof(ext_capab)); 465 if (ext_capab_len > 0) { 466 u8 *pos = wpa_s->sme.assoc_req_ie; 467 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) 468 pos += 2 + pos[1]; 469 os_memmove(pos + ext_capab_len, pos, 470 wpa_s->sme.assoc_req_ie_len - 471 (pos - wpa_s->sme.assoc_req_ie)); 472 wpa_s->sme.assoc_req_ie_len += ext_capab_len; 473 os_memcpy(pos, ext_capab, ext_capab_len); 474 } 475 476#ifdef CONFIG_HS20 477 if (is_hs20_network(wpa_s, ssid, bss)) { 478 struct wpabuf *hs20; 479 480 hs20 = wpabuf_alloc(20); 481 if (hs20) { 482 int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid); 483 size_t len; 484 485 wpas_hs20_add_indication(hs20, pps_mo_id); 486 len = sizeof(wpa_s->sme.assoc_req_ie) - 487 wpa_s->sme.assoc_req_ie_len; 488 if (wpabuf_len(hs20) <= len) { 489 os_memcpy(wpa_s->sme.assoc_req_ie + 490 wpa_s->sme.assoc_req_ie_len, 491 wpabuf_head(hs20), wpabuf_len(hs20)); 492 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); 493 } 494 wpabuf_free(hs20); 495 } 496 } 497#endif /* CONFIG_HS20 */ 498 499 if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) { 500 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]; 501 size_t len; 502 503 len = sizeof(wpa_s->sme.assoc_req_ie) - 504 wpa_s->sme.assoc_req_ie_len; 505 if (wpabuf_len(buf) <= len) { 506 os_memcpy(wpa_s->sme.assoc_req_ie + 507 wpa_s->sme.assoc_req_ie_len, 508 wpabuf_head(buf), wpabuf_len(buf)); 509 wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf); 510 } 511 } 512 513#ifdef CONFIG_MBO 514 if (mbo) { 515 int len; 516 517 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie + 518 wpa_s->sme.assoc_req_ie_len, 519 sizeof(wpa_s->sme.assoc_req_ie) - 520 wpa_s->sme.assoc_req_ie_len); 521 if (len >= 0) 522 wpa_s->sme.assoc_req_ie_len += len; 523 } 524#endif /* CONFIG_MBO */ 525 526#ifdef CONFIG_SAE 527 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE && 528 pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0) 529 { 530 wpa_dbg(wpa_s, MSG_DEBUG, 531 "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication"); 532 params.auth_alg = WPA_AUTH_ALG_OPEN; 533 wpa_s->sme.sae_pmksa_caching = 1; 534 } 535 536 if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) { 537 if (start) 538 resp = sme_auth_build_sae_commit(wpa_s, ssid, 539 bss->bssid); 540 else 541 resp = sme_auth_build_sae_confirm(wpa_s); 542 if (resp == NULL) { 543 wpas_connection_failed(wpa_s, bss->bssid); 544 return; 545 } 546 params.sae_data = wpabuf_head(resp); 547 params.sae_data_len = wpabuf_len(resp); 548 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED; 549 } 550#endif /* CONFIG_SAE */ 551 552 wpa_supplicant_cancel_sched_scan(wpa_s); 553 wpa_supplicant_cancel_scan(wpa_s); 554 555 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR 556 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 557 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); 558 559 wpa_clear_keys(wpa_s, bss->bssid); 560 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 561 old_ssid = wpa_s->current_ssid; 562 wpa_s->current_ssid = ssid; 563 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 564 wpa_supplicant_initiate_eapol(wpa_s); 565 if (old_ssid != wpa_s->current_ssid) 566 wpas_notify_network_changed(wpa_s); 567 568#ifdef CONFIG_HS20 569 hs20_configure_frame_filters(wpa_s); 570#endif /* CONFIG_HS20 */ 571 572#ifdef CONFIG_P2P 573 /* 574 * If multi-channel concurrency is not supported, check for any 575 * frequency conflict. In case of any frequency conflict, remove the 576 * least prioritized connection. 577 */ 578 if (wpa_s->num_multichan_concurrent < 2) { 579 int freq, num; 580 num = get_shared_radio_freqs(wpa_s, &freq, 1); 581 if (num > 0 && freq > 0 && freq != params.freq) { 582 wpa_printf(MSG_DEBUG, 583 "Conflicting frequency found (%d != %d)", 584 freq, params.freq); 585 if (wpas_p2p_handle_frequency_conflicts(wpa_s, 586 params.freq, 587 ssid) < 0) { 588 wpas_connection_failed(wpa_s, bss->bssid); 589 wpa_supplicant_mark_disassoc(wpa_s); 590 wpabuf_free(resp); 591 wpas_connect_work_done(wpa_s); 592 return; 593 } 594 } 595 } 596#endif /* CONFIG_P2P */ 597 598 if (skip_auth) { 599 wpa_msg(wpa_s, MSG_DEBUG, 600 "SME: Skip authentication step on reassoc-to-same-BSS"); 601 wpabuf_free(resp); 602 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN); 603 return; 604 } 605 606 607 wpa_s->sme.auth_alg = params.auth_alg; 608 if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { 609 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " 610 "driver failed"); 611 wpas_connection_failed(wpa_s, bss->bssid); 612 wpa_supplicant_mark_disassoc(wpa_s); 613 wpabuf_free(resp); 614 wpas_connect_work_done(wpa_s); 615 return; 616 } 617 618 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 619 NULL); 620 621 /* 622 * Association will be started based on the authentication event from 623 * the driver. 624 */ 625 626 wpabuf_free(resp); 627} 628 629 630static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit) 631{ 632 struct wpa_connect_work *cwork = work->ctx; 633 struct wpa_supplicant *wpa_s = work->wpa_s; 634 635 if (deinit) { 636 if (work->started) 637 wpa_s->connect_work = NULL; 638 639 wpas_connect_work_free(cwork); 640 return; 641 } 642 643 wpa_s->connect_work = work; 644 645 if (cwork->bss_removed || 646 !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) || 647 wpas_network_disabled(wpa_s, cwork->ssid)) { 648 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt"); 649 wpas_connect_work_done(wpa_s); 650 return; 651 } 652 653 sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1); 654} 655 656 657void sme_authenticate(struct wpa_supplicant *wpa_s, 658 struct wpa_bss *bss, struct wpa_ssid *ssid) 659{ 660 struct wpa_connect_work *cwork; 661 662 if (bss == NULL || ssid == NULL) 663 return; 664 if (wpa_s->connect_work) { 665 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist"); 666 return; 667 } 668 669 if (radio_work_pending(wpa_s, "sme-connect")) { 670 /* 671 * The previous sme-connect work might no longer be valid due to 672 * the fact that the BSS list was updated. In addition, it makes 673 * sense to adhere to the 'newer' decision. 674 */ 675 wpa_dbg(wpa_s, MSG_DEBUG, 676 "SME: Remove previous pending sme-connect"); 677 radio_remove_works(wpa_s, "sme-connect", 0); 678 } 679 680 wpas_abort_ongoing_scan(wpa_s); 681 682 cwork = os_zalloc(sizeof(*cwork)); 683 if (cwork == NULL) 684 return; 685 cwork->bss = bss; 686 cwork->ssid = ssid; 687 cwork->sme = 1; 688 689#ifdef CONFIG_SAE 690 wpa_s->sme.sae.state = SAE_NOTHING; 691 wpa_s->sme.sae.send_confirm = 0; 692 wpa_s->sme.sae_group_index = 0; 693#endif /* CONFIG_SAE */ 694 695 if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1, 696 sme_auth_start_cb, cwork) < 0) 697 wpas_connect_work_free(cwork); 698} 699 700 701#ifdef CONFIG_SAE 702 703static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, 704 u16 status_code, const u8 *data, size_t len) 705{ 706 int *groups; 707 708 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " 709 "status code %u", auth_transaction, status_code); 710 711 if (auth_transaction == 1 && 712 status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ && 713 wpa_s->sme.sae.state == SAE_COMMITTED && 714 wpa_s->current_bss && wpa_s->current_ssid) { 715 int default_groups[] = { 19, 20, 21, 25, 26, 0 }; 716 u16 group; 717 718 groups = wpa_s->conf->sae_groups; 719 if (!groups || groups[0] <= 0) 720 groups = default_groups; 721 722 if (len < sizeof(le16)) { 723 wpa_dbg(wpa_s, MSG_DEBUG, 724 "SME: Too short SAE anti-clogging token request"); 725 return -1; 726 } 727 group = WPA_GET_LE16(data); 728 wpa_dbg(wpa_s, MSG_DEBUG, 729 "SME: SAE anti-clogging token requested (group %u)", 730 group); 731 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) != 732 WLAN_STATUS_SUCCESS) { 733 wpa_dbg(wpa_s, MSG_ERROR, 734 "SME: SAE group %u of anti-clogging request is invalid", 735 group); 736 return -1; 737 } 738 wpabuf_free(wpa_s->sme.sae_token); 739 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16), 740 len - sizeof(le16)); 741 sme_send_authentication(wpa_s, wpa_s->current_bss, 742 wpa_s->current_ssid, 1); 743 return 0; 744 } 745 746 if (auth_transaction == 1 && 747 status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED && 748 wpa_s->sme.sae.state == SAE_COMMITTED && 749 wpa_s->current_bss && wpa_s->current_ssid) { 750 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported"); 751 wpa_s->sme.sae_group_index++; 752 if (sme_set_sae_group(wpa_s) < 0) 753 return -1; /* no other groups enabled */ 754 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group"); 755 sme_send_authentication(wpa_s, wpa_s->current_bss, 756 wpa_s->current_ssid, 1); 757 return 0; 758 } 759 760 if (status_code != WLAN_STATUS_SUCCESS) 761 return -1; 762 763 if (auth_transaction == 1) { 764 u16 res; 765 766 groups = wpa_s->conf->sae_groups; 767 768 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); 769 if (wpa_s->current_bss == NULL || 770 wpa_s->current_ssid == NULL) 771 return -1; 772 if (wpa_s->sme.sae.state != SAE_COMMITTED) 773 return -1; 774 if (groups && groups[0] <= 0) 775 groups = NULL; 776 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL, 777 groups); 778 if (res == SAE_SILENTLY_DISCARD) { 779 wpa_printf(MSG_DEBUG, 780 "SAE: Drop commit message due to reflection attack"); 781 return 0; 782 } 783 if (res != WLAN_STATUS_SUCCESS) 784 return -1; 785 786 if (sae_process_commit(&wpa_s->sme.sae) < 0) { 787 wpa_printf(MSG_DEBUG, "SAE: Failed to process peer " 788 "commit"); 789 return -1; 790 } 791 792 wpabuf_free(wpa_s->sme.sae_token); 793 wpa_s->sme.sae_token = NULL; 794 sme_send_authentication(wpa_s, wpa_s->current_bss, 795 wpa_s->current_ssid, 0); 796 return 0; 797 } else if (auth_transaction == 2) { 798 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); 799 if (wpa_s->sme.sae.state != SAE_CONFIRMED) 800 return -1; 801 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0) 802 return -1; 803 wpa_s->sme.sae.state = SAE_ACCEPTED; 804 sae_clear_temp_data(&wpa_s->sme.sae); 805 return 1; 806 } 807 808 return -1; 809} 810#endif /* CONFIG_SAE */ 811 812 813void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) 814{ 815 struct wpa_ssid *ssid = wpa_s->current_ssid; 816 817 if (ssid == NULL) { 818 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 819 "when network is not selected"); 820 return; 821 } 822 823 if (wpa_s->wpa_state != WPA_AUTHENTICATING) { 824 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 825 "when not in authenticating state"); 826 return; 827 } 828 829 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { 830 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " 831 "unexpected peer " MACSTR, 832 MAC2STR(data->auth.peer)); 833 return; 834 } 835 836 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR 837 " auth_type=%d auth_transaction=%d status_code=%d", 838 MAC2STR(data->auth.peer), data->auth.auth_type, 839 data->auth.auth_transaction, data->auth.status_code); 840 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", 841 data->auth.ies, data->auth.ies_len); 842 843 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 844 845#ifdef CONFIG_SAE 846 if (data->auth.auth_type == WLAN_AUTH_SAE) { 847 int res; 848 res = sme_sae_auth(wpa_s, data->auth.auth_transaction, 849 data->auth.status_code, data->auth.ies, 850 data->auth.ies_len); 851 if (res < 0) { 852 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 853 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 854 855 } 856 if (res != 1) 857 return; 858 859 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for " 860 "4-way handshake"); 861 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN, 862 wpa_s->sme.sae.pmkid, wpa_s->pending_bssid); 863 } 864#endif /* CONFIG_SAE */ 865 866 if (data->auth.status_code != WLAN_STATUS_SUCCESS) { 867 char *ie_txt = NULL; 868 869 if (data->auth.ies && data->auth.ies_len) { 870 size_t buflen = 2 * data->auth.ies_len + 1; 871 ie_txt = os_malloc(buflen); 872 if (ie_txt) { 873 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies, 874 data->auth.ies_len); 875 } 876 } 877 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR 878 " auth_type=%u auth_transaction=%u status_code=%u ie=%s", 879 MAC2STR(data->auth.peer), data->auth.auth_type, 880 data->auth.auth_transaction, data->auth.status_code, 881 ie_txt); 882 os_free(ie_txt); 883 884 if (data->auth.status_code != 885 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || 886 wpa_s->sme.auth_alg == data->auth.auth_type || 887 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { 888 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 889 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 890 return; 891 } 892 893 wpas_connect_work_done(wpa_s); 894 895 switch (data->auth.auth_type) { 896 case WLAN_AUTH_OPEN: 897 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; 898 899 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); 900 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 901 wpa_s->current_ssid); 902 return; 903 904 case WLAN_AUTH_SHARED_KEY: 905 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; 906 907 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); 908 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 909 wpa_s->current_ssid); 910 return; 911 912 default: 913 return; 914 } 915 } 916 917#ifdef CONFIG_IEEE80211R 918 if (data->auth.auth_type == WLAN_AUTH_FT) { 919 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies, 920 data->auth.ies_len, 0, 921 data->auth.peer, NULL, 0) < 0) { 922 wpa_dbg(wpa_s, MSG_DEBUG, 923 "SME: FT Authentication response processing failed"); 924 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid=" 925 MACSTR 926 " reason=%d locally_generated=1", 927 MAC2STR(wpa_s->pending_bssid), 928 WLAN_REASON_DEAUTH_LEAVING); 929 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 930 wpa_supplicant_mark_disassoc(wpa_s); 931 return; 932 } 933 } 934#endif /* CONFIG_IEEE80211R */ 935 936 sme_associate(wpa_s, ssid->mode, data->auth.peer, 937 data->auth.auth_type); 938} 939 940 941void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, 942 const u8 *bssid, u16 auth_type) 943{ 944 struct wpa_driver_associate_params params; 945 struct ieee802_11_elems elems; 946#ifdef CONFIG_HT_OVERRIDES 947 struct ieee80211_ht_capabilities htcaps; 948 struct ieee80211_ht_capabilities htcaps_mask; 949#endif /* CONFIG_HT_OVERRIDES */ 950#ifdef CONFIG_VHT_OVERRIDES 951 struct ieee80211_vht_capabilities vhtcaps; 952 struct ieee80211_vht_capabilities vhtcaps_mask; 953#endif /* CONFIG_VHT_OVERRIDES */ 954 955 os_memset(¶ms, 0, sizeof(params)); 956 params.bssid = bssid; 957 params.ssid = wpa_s->sme.ssid; 958 params.ssid_len = wpa_s->sme.ssid_len; 959 params.freq.freq = wpa_s->sme.freq; 960 params.bg_scan_period = wpa_s->current_ssid ? 961 wpa_s->current_ssid->bg_scan_period : -1; 962 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? 963 wpa_s->sme.assoc_req_ie : NULL; 964 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 965 params.pairwise_suite = wpa_s->pairwise_cipher; 966 params.group_suite = wpa_s->group_cipher; 967 params.key_mgmt_suite = wpa_s->key_mgmt; 968 params.wpa_proto = wpa_s->wpa_proto; 969#ifdef CONFIG_HT_OVERRIDES 970 os_memset(&htcaps, 0, sizeof(htcaps)); 971 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 972 params.htcaps = (u8 *) &htcaps; 973 params.htcaps_mask = (u8 *) &htcaps_mask; 974 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 975#endif /* CONFIG_HT_OVERRIDES */ 976#ifdef CONFIG_VHT_OVERRIDES 977 os_memset(&vhtcaps, 0, sizeof(vhtcaps)); 978 os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask)); 979 params.vhtcaps = &vhtcaps; 980 params.vhtcaps_mask = &vhtcaps_mask; 981 wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 982#endif /* CONFIG_VHT_OVERRIDES */ 983#ifdef CONFIG_IEEE80211R 984 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { 985 params.wpa_ie = wpa_s->sme.ft_ies; 986 params.wpa_ie_len = wpa_s->sme.ft_ies_len; 987 } 988#endif /* CONFIG_IEEE80211R */ 989 params.mode = mode; 990 params.mgmt_frame_protection = wpa_s->sme.mfp; 991 params.rrm_used = wpa_s->rrm.rrm_used; 992 if (wpa_s->sme.prev_bssid_set) 993 params.prev_bssid = wpa_s->sme.prev_bssid; 994 995 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 996 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 997 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", 998 params.freq.freq); 999 1000 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 1001 1002 if (params.wpa_ie == NULL || 1003 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) 1004 < 0) { 1005 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); 1006 os_memset(&elems, 0, sizeof(elems)); 1007 } 1008 if (elems.rsn_ie) { 1009 params.wpa_proto = WPA_PROTO_RSN; 1010 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, 1011 elems.rsn_ie_len + 2); 1012 } else if (elems.wpa_ie) { 1013 params.wpa_proto = WPA_PROTO_WPA; 1014 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, 1015 elems.wpa_ie_len + 2); 1016 } else if (elems.osen) { 1017 params.wpa_proto = WPA_PROTO_OSEN; 1018 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2, 1019 elems.osen_len + 2); 1020 } else 1021 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 1022 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) 1023 params.p2p = 1; 1024 1025 if (wpa_s->p2pdev->set_sta_uapsd) 1026 params.uapsd = wpa_s->p2pdev->sta_uapsd; 1027 else 1028 params.uapsd = -1; 1029 1030 if (wpa_drv_associate(wpa_s, ¶ms) < 0) { 1031 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " 1032 "driver failed"); 1033 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1034 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1035 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1036 return; 1037 } 1038 1039 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, 1040 NULL); 1041} 1042 1043 1044int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, 1045 const u8 *ies, size_t ies_len) 1046{ 1047 if (md == NULL || ies == NULL) { 1048 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); 1049 os_free(wpa_s->sme.ft_ies); 1050 wpa_s->sme.ft_ies = NULL; 1051 wpa_s->sme.ft_ies_len = 0; 1052 wpa_s->sme.ft_used = 0; 1053 return 0; 1054 } 1055 1056 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 1057 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); 1058 os_free(wpa_s->sme.ft_ies); 1059 wpa_s->sme.ft_ies = os_malloc(ies_len); 1060 if (wpa_s->sme.ft_ies == NULL) 1061 return -1; 1062 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); 1063 wpa_s->sme.ft_ies_len = ies_len; 1064 return 0; 1065} 1066 1067 1068static void sme_deauth(struct wpa_supplicant *wpa_s) 1069{ 1070 int bssid_changed; 1071 1072 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 1073 1074 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1075 WLAN_REASON_DEAUTH_LEAVING) < 0) { 1076 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " 1077 "failed"); 1078 } 1079 wpa_s->sme.prev_bssid_set = 0; 1080 1081 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1082 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 1083 os_memset(wpa_s->bssid, 0, ETH_ALEN); 1084 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 1085 if (bssid_changed) 1086 wpas_notify_bssid_changed(wpa_s); 1087} 1088 1089 1090void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, 1091 union wpa_event_data *data) 1092{ 1093 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " 1094 "status code %d", MAC2STR(wpa_s->pending_bssid), 1095 data->assoc_reject.status_code); 1096 1097 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1098 1099#ifdef CONFIG_SAE 1100 if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid && 1101 wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) { 1102 wpa_dbg(wpa_s, MSG_DEBUG, 1103 "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication"); 1104 wpa_sm_aborted_cached(wpa_s->wpa); 1105 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid); 1106 if (wpa_s->current_bss) { 1107 struct wpa_bss *bss = wpa_s->current_bss; 1108 struct wpa_ssid *ssid = wpa_s->current_ssid; 1109 1110 wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 1111 WLAN_REASON_DEAUTH_LEAVING); 1112 wpas_connect_work_done(wpa_s); 1113 wpa_supplicant_mark_disassoc(wpa_s); 1114 wpa_supplicant_connect(wpa_s, bss, ssid); 1115 return; 1116 } 1117 } 1118#endif /* CONFIG_SAE */ 1119 1120 /* 1121 * For now, unconditionally terminate the previous authentication. In 1122 * theory, this should not be needed, but mac80211 gets quite confused 1123 * if the authentication is left pending.. Some roaming cases might 1124 * benefit from using the previous authentication, so this could be 1125 * optimized in the future. 1126 */ 1127 sme_deauth(wpa_s); 1128} 1129 1130 1131void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, 1132 union wpa_event_data *data) 1133{ 1134 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); 1135 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1136 wpa_supplicant_mark_disassoc(wpa_s); 1137} 1138 1139 1140void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, 1141 union wpa_event_data *data) 1142{ 1143 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); 1144 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 1145 wpa_supplicant_mark_disassoc(wpa_s); 1146} 1147 1148 1149void sme_event_disassoc(struct wpa_supplicant *wpa_s, 1150 struct disassoc_info *info) 1151{ 1152 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); 1153 if (wpa_s->sme.prev_bssid_set) { 1154 /* 1155 * cfg80211/mac80211 can get into somewhat confused state if 1156 * the AP only disassociates us and leaves us in authenticated 1157 * state. For now, force the state to be cleared to avoid 1158 * confusing errors if we try to associate with the AP again. 1159 */ 1160 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " 1161 "driver state"); 1162 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, 1163 WLAN_REASON_DEAUTH_LEAVING); 1164 } 1165} 1166 1167 1168static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) 1169{ 1170 struct wpa_supplicant *wpa_s = eloop_ctx; 1171 if (wpa_s->wpa_state == WPA_AUTHENTICATING) { 1172 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); 1173 sme_deauth(wpa_s); 1174 } 1175} 1176 1177 1178static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) 1179{ 1180 struct wpa_supplicant *wpa_s = eloop_ctx; 1181 if (wpa_s->wpa_state == WPA_ASSOCIATING) { 1182 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); 1183 sme_deauth(wpa_s); 1184 } 1185} 1186 1187 1188void sme_state_changed(struct wpa_supplicant *wpa_s) 1189{ 1190 /* Make sure timers are cleaned up appropriately. */ 1191 if (wpa_s->wpa_state != WPA_ASSOCIATING) 1192 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1193 if (wpa_s->wpa_state != WPA_AUTHENTICATING) 1194 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1195} 1196 1197 1198void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, 1199 const u8 *prev_pending_bssid) 1200{ 1201 /* 1202 * mac80211-workaround to force deauth on failed auth cmd, 1203 * requires us to remain in authenticating state to allow the 1204 * second authentication attempt to be continued properly. 1205 */ 1206 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " 1207 "to proceed after disconnection event"); 1208 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 1209 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); 1210 1211 /* 1212 * Re-arm authentication timer in case auth fails for whatever reason. 1213 */ 1214 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1215 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 1216 NULL); 1217} 1218 1219 1220void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s) 1221{ 1222 wpa_s->sme.prev_bssid_set = 0; 1223#ifdef CONFIG_SAE 1224 wpabuf_free(wpa_s->sme.sae_token); 1225 wpa_s->sme.sae_token = NULL; 1226 sae_clear_data(&wpa_s->sme.sae); 1227#endif /* CONFIG_SAE */ 1228#ifdef CONFIG_IEEE80211R 1229 if (wpa_s->sme.ft_ies) 1230 sme_update_ft_ies(wpa_s, NULL, NULL, 0); 1231#endif /* CONFIG_IEEE80211R */ 1232} 1233 1234 1235void sme_deinit(struct wpa_supplicant *wpa_s) 1236{ 1237 os_free(wpa_s->sme.ft_ies); 1238 wpa_s->sme.ft_ies = NULL; 1239 wpa_s->sme.ft_ies_len = 0; 1240#ifdef CONFIG_IEEE80211W 1241 sme_stop_sa_query(wpa_s); 1242#endif /* CONFIG_IEEE80211W */ 1243 sme_clear_on_disassoc(wpa_s); 1244 1245 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 1246 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 1247 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 1248} 1249 1250 1251static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, 1252 const u8 *chan_list, u8 num_channels, 1253 u8 num_intol) 1254{ 1255 struct ieee80211_2040_bss_coex_ie *bc_ie; 1256 struct ieee80211_2040_intol_chan_report *ic_report; 1257 struct wpabuf *buf; 1258 1259 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR 1260 " (num_channels=%u num_intol=%u)", 1261 MAC2STR(wpa_s->bssid), num_channels, num_intol); 1262 wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels", 1263 chan_list, num_channels); 1264 1265 buf = wpabuf_alloc(2 + /* action.category + action_code */ 1266 sizeof(struct ieee80211_2040_bss_coex_ie) + 1267 sizeof(struct ieee80211_2040_intol_chan_report) + 1268 num_channels); 1269 if (buf == NULL) 1270 return; 1271 1272 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); 1273 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); 1274 1275 bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); 1276 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; 1277 bc_ie->length = 1; 1278 if (num_intol) 1279 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; 1280 1281 if (num_channels > 0) { 1282 ic_report = wpabuf_put(buf, sizeof(*ic_report)); 1283 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; 1284 ic_report->length = num_channels + 1; 1285 ic_report->op_class = 0; 1286 os_memcpy(wpabuf_put(buf, num_channels), chan_list, 1287 num_channels); 1288 } 1289 1290 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 1291 wpa_s->own_addr, wpa_s->bssid, 1292 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 1293 wpa_msg(wpa_s, MSG_INFO, 1294 "SME: Failed to send 20/40 BSS Coexistence frame"); 1295 } 1296 1297 wpabuf_free(buf); 1298} 1299 1300 1301int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) 1302{ 1303 struct wpa_bss *bss; 1304 const u8 *ie; 1305 u16 ht_cap; 1306 u8 chan_list[P2P_MAX_CHANNELS], channel; 1307 u8 num_channels = 0, num_intol = 0, i; 1308 1309 if (!wpa_s->sme.sched_obss_scan) 1310 return 0; 1311 1312 wpa_s->sme.sched_obss_scan = 0; 1313 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) 1314 return 1; 1315 1316 /* 1317 * Check whether AP uses regulatory triplet or channel triplet in 1318 * country info. Right now the operating class of the BSS channel 1319 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), 1320 * based on the assumption that operating class triplet is not used in 1321 * beacon frame. If the First Channel Number/Operating Extension 1322 * Identifier octet has a positive integer value of 201 or greater, 1323 * then its operating class triplet. 1324 * 1325 * TODO: If Supported Operating Classes element is present in beacon 1326 * frame, have to lookup operating class in Annex E and fill them in 1327 * 2040 coex frame. 1328 */ 1329 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); 1330 if (ie && (ie[1] >= 6) && (ie[5] >= 201)) 1331 return 1; 1332 1333 os_memset(chan_list, 0, sizeof(chan_list)); 1334 1335 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 1336 /* Skip other band bss */ 1337 enum hostapd_hw_mode mode; 1338 mode = ieee80211_freq_to_chan(bss->freq, &channel); 1339 if (mode != HOSTAPD_MODE_IEEE80211G && 1340 mode != HOSTAPD_MODE_IEEE80211B) 1341 continue; 1342 1343 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); 1344 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; 1345 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR 1346 " freq=%u chan=%u ht_cap=0x%x", 1347 MAC2STR(bss->bssid), bss->freq, channel, ht_cap); 1348 1349 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { 1350 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) 1351 num_intol++; 1352 1353 /* Check whether the channel is already considered */ 1354 for (i = 0; i < num_channels; i++) { 1355 if (channel == chan_list[i]) 1356 break; 1357 } 1358 if (i != num_channels) 1359 continue; 1360 1361 chan_list[num_channels++] = channel; 1362 } 1363 } 1364 1365 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); 1366 return 1; 1367} 1368 1369 1370static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s, 1371 struct wpa_driver_scan_params *params) 1372{ 1373 /* Include only affected channels */ 1374 struct hostapd_hw_modes *mode; 1375 int count, i; 1376 int start, end; 1377 1378 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, 1379 HOSTAPD_MODE_IEEE80211G); 1380 if (mode == NULL) { 1381 /* No channels supported in this band - use empty list */ 1382 params->freqs = os_zalloc(sizeof(int)); 1383 return; 1384 } 1385 1386 if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN && 1387 wpa_s->current_bss) { 1388 const u8 *ie; 1389 1390 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION); 1391 if (ie && ie[1] >= 2) { 1392 u8 o; 1393 1394 o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK; 1395 if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE) 1396 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE; 1397 else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW) 1398 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW; 1399 } 1400 } 1401 1402 start = wpa_s->assoc_freq - 10; 1403 end = wpa_s->assoc_freq + 10; 1404 switch (wpa_s->sme.ht_sec_chan) { 1405 case HT_SEC_CHAN_UNKNOWN: 1406 /* HT40+ possible on channels 1..9 */ 1407 if (wpa_s->assoc_freq <= 2452) 1408 start -= 20; 1409 /* HT40- possible on channels 5-13 */ 1410 if (wpa_s->assoc_freq >= 2432) 1411 end += 20; 1412 break; 1413 case HT_SEC_CHAN_ABOVE: 1414 end += 20; 1415 break; 1416 case HT_SEC_CHAN_BELOW: 1417 start -= 20; 1418 break; 1419 } 1420 wpa_printf(MSG_DEBUG, 1421 "OBSS: assoc_freq %d possible affected range %d-%d", 1422 wpa_s->assoc_freq, start, end); 1423 1424 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); 1425 if (params->freqs == NULL) 1426 return; 1427 for (count = 0, i = 0; i < mode->num_channels; i++) { 1428 int freq; 1429 1430 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) 1431 continue; 1432 freq = mode->channels[i].freq; 1433 if (freq - 10 >= end || freq + 10 <= start) 1434 continue; /* not affected */ 1435 params->freqs[count++] = freq; 1436 } 1437} 1438 1439 1440static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) 1441{ 1442 struct wpa_supplicant *wpa_s = eloop_ctx; 1443 struct wpa_driver_scan_params params; 1444 1445 if (!wpa_s->current_bss) { 1446 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); 1447 return; 1448 } 1449 1450 os_memset(¶ms, 0, sizeof(params)); 1451 wpa_obss_scan_freqs_list(wpa_s, ¶ms); 1452 params.low_priority = 1; 1453 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); 1454 1455 if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) 1456 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); 1457 else 1458 wpa_s->sme.sched_obss_scan = 1; 1459 os_free(params.freqs); 1460 1461 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1462 sme_obss_scan_timeout, wpa_s, NULL); 1463} 1464 1465 1466void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) 1467{ 1468 const u8 *ie; 1469 struct wpa_bss *bss = wpa_s->current_bss; 1470 struct wpa_ssid *ssid = wpa_s->current_ssid; 1471 struct hostapd_hw_modes *hw_mode = NULL; 1472 int i; 1473 1474 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 1475 wpa_s->sme.sched_obss_scan = 0; 1476 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN; 1477 if (!enable) 1478 return; 1479 1480 /* 1481 * Schedule OBSS scan if driver is using station SME in wpa_supplicant 1482 * or it expects OBSS scan to be performed by wpa_supplicant. 1483 */ 1484 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || 1485 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || 1486 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) 1487 return; 1488 1489 if (!wpa_s->hw.modes) 1490 return; 1491 1492 /* only HT caps in 11g mode are relevant */ 1493 for (i = 0; i < wpa_s->hw.num_modes; i++) { 1494 hw_mode = &wpa_s->hw.modes[i]; 1495 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) 1496 break; 1497 } 1498 1499 /* Driver does not support HT40 for 11g or doesn't have 11g. */ 1500 if (i == wpa_s->hw.num_modes || !hw_mode || 1501 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1502 return; 1503 1504 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) 1505 return; /* Not associated on 2.4 GHz band */ 1506 1507 /* Check whether AP supports HT40 */ 1508 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); 1509 if (!ie || ie[1] < 2 || 1510 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1511 return; /* AP does not support HT40 */ 1512 1513 ie = wpa_bss_get_ie(wpa_s->current_bss, 1514 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); 1515 if (!ie || ie[1] < 14) 1516 return; /* AP does not request OBSS scans */ 1517 1518 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); 1519 if (wpa_s->sme.obss_scan_int < 10) { 1520 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " 1521 "replaced with the minimum 10 sec", 1522 wpa_s->sme.obss_scan_int); 1523 wpa_s->sme.obss_scan_int = 10; 1524 } 1525 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", 1526 wpa_s->sme.obss_scan_int); 1527 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1528 sme_obss_scan_timeout, wpa_s, NULL); 1529} 1530 1531 1532#ifdef CONFIG_IEEE80211W 1533 1534static const unsigned int sa_query_max_timeout = 1000; 1535static const unsigned int sa_query_retry_timeout = 201; 1536 1537static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) 1538{ 1539 u32 tu; 1540 struct os_reltime now, passed; 1541 os_get_reltime(&now); 1542 os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed); 1543 tu = (passed.sec * 1000000 + passed.usec) / 1024; 1544 if (sa_query_max_timeout < tu) { 1545 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); 1546 sme_stop_sa_query(wpa_s); 1547 wpa_supplicant_deauthenticate( 1548 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); 1549 return 1; 1550 } 1551 1552 return 0; 1553} 1554 1555 1556static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, 1557 const u8 *trans_id) 1558{ 1559 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; 1560 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " 1561 MACSTR, MAC2STR(wpa_s->bssid)); 1562 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", 1563 trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1564 req[0] = WLAN_ACTION_SA_QUERY; 1565 req[1] = WLAN_SA_QUERY_REQUEST; 1566 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1567 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 1568 wpa_s->own_addr, wpa_s->bssid, 1569 req, sizeof(req), 0) < 0) 1570 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " 1571 "Request"); 1572} 1573 1574 1575static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) 1576{ 1577 struct wpa_supplicant *wpa_s = eloop_ctx; 1578 unsigned int timeout, sec, usec; 1579 u8 *trans_id, *nbuf; 1580 1581 if (wpa_s->sme.sa_query_count > 0 && 1582 sme_check_sa_query_timeout(wpa_s)) 1583 return; 1584 1585 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, 1586 wpa_s->sme.sa_query_count + 1, 1587 WLAN_SA_QUERY_TR_ID_LEN); 1588 if (nbuf == NULL) { 1589 sme_stop_sa_query(wpa_s); 1590 return; 1591 } 1592 if (wpa_s->sme.sa_query_count == 0) { 1593 /* Starting a new SA Query procedure */ 1594 os_get_reltime(&wpa_s->sme.sa_query_start); 1595 } 1596 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; 1597 wpa_s->sme.sa_query_trans_id = nbuf; 1598 wpa_s->sme.sa_query_count++; 1599 1600 if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) { 1601 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID"); 1602 sme_stop_sa_query(wpa_s); 1603 return; 1604 } 1605 1606 timeout = sa_query_retry_timeout; 1607 sec = ((timeout / 1000) * 1024) / 1000; 1608 usec = (timeout % 1000) * 1024; 1609 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); 1610 1611 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", 1612 wpa_s->sme.sa_query_count); 1613 1614 sme_send_sa_query_req(wpa_s, trans_id); 1615} 1616 1617 1618static void sme_start_sa_query(struct wpa_supplicant *wpa_s) 1619{ 1620 sme_sa_query_timer(wpa_s, NULL); 1621} 1622 1623 1624static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) 1625{ 1626 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); 1627 os_free(wpa_s->sme.sa_query_trans_id); 1628 wpa_s->sme.sa_query_trans_id = NULL; 1629 wpa_s->sme.sa_query_count = 0; 1630} 1631 1632 1633void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, 1634 const u8 *da, u16 reason_code) 1635{ 1636 struct wpa_ssid *ssid; 1637 struct os_reltime now; 1638 1639 if (wpa_s->wpa_state != WPA_COMPLETED) 1640 return; 1641 ssid = wpa_s->current_ssid; 1642 if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION) 1643 return; 1644 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1645 return; 1646 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && 1647 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) 1648 return; 1649 if (wpa_s->sme.sa_query_count > 0) 1650 return; 1651 1652 os_get_reltime(&now); 1653 if (wpa_s->sme.last_unprot_disconnect.sec && 1654 !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10)) 1655 return; /* limit SA Query procedure frequency */ 1656 wpa_s->sme.last_unprot_disconnect = now; 1657 1658 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " 1659 "possible AP/STA state mismatch - trigger SA Query"); 1660 sme_start_sa_query(wpa_s); 1661} 1662 1663 1664void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, 1665 const u8 *data, size_t len) 1666{ 1667 int i; 1668 1669 if (wpa_s->sme.sa_query_trans_id == NULL || 1670 len < 1 + WLAN_SA_QUERY_TR_ID_LEN || 1671 data[0] != WLAN_SA_QUERY_RESPONSE) 1672 return; 1673 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " 1674 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); 1675 1676 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1677 return; 1678 1679 for (i = 0; i < wpa_s->sme.sa_query_count; i++) { 1680 if (os_memcmp(wpa_s->sme.sa_query_trans_id + 1681 i * WLAN_SA_QUERY_TR_ID_LEN, 1682 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) 1683 break; 1684 } 1685 1686 if (i >= wpa_s->sme.sa_query_count) { 1687 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " 1688 "transaction identifier found"); 1689 return; 1690 } 1691 1692 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " 1693 "from " MACSTR, MAC2STR(sa)); 1694 sme_stop_sa_query(wpa_s); 1695} 1696 1697#endif /* CONFIG_IEEE80211W */ 1698