1/* 2 * wpa_supplicant - SME 3 * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9#include "includes.h" 10 11#include "common.h" 12#include "utils/eloop.h" 13#include "common/ieee802_11_defs.h" 14#include "common/ieee802_11_common.h" 15#include "eapol_supp/eapol_supp_sm.h" 16#include "common/wpa_common.h" 17#include "rsn_supp/wpa.h" 18#include "rsn_supp/pmksa_cache.h" 19#include "config.h" 20#include "wpa_supplicant_i.h" 21#include "driver_i.h" 22#include "wpas_glue.h" 23#include "wps_supplicant.h" 24#include "p2p_supplicant.h" 25#include "notify.h" 26#include "bss.h" 27#include "scan.h" 28#include "sme.h" 29#include "hs20_supplicant.h" 30 31#define SME_AUTH_TIMEOUT 5 32#define SME_ASSOC_TIMEOUT 5 33 34static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx); 35static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx); 36static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx); 37#ifdef CONFIG_IEEE80211W 38static void sme_stop_sa_query(struct wpa_supplicant *wpa_s); 39#endif /* CONFIG_IEEE80211W */ 40 41 42#ifdef CONFIG_SAE 43 44static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s) 45{ 46 struct wpabuf *buf; 47 48 buf = wpabuf_alloc(4 + 2); 49 if (buf == NULL) 50 return NULL; 51 52 wpabuf_put_le16(buf, 1); /* Transaction seq# */ 53 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); 54 wpabuf_put_le16(buf, 19); /* Finite Cyclic Group */ 55 /* TODO: Anti-Clogging Token (if requested) */ 56 /* TODO: Scalar */ 57 /* TODO: Element */ 58 59 return buf; 60} 61 62 63static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s) 64{ 65 struct wpabuf *buf; 66 67 buf = wpabuf_alloc(4 + 2); 68 if (buf == NULL) 69 return NULL; 70 71 wpabuf_put_le16(buf, 2); /* Transaction seq# */ 72 wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS); 73 wpabuf_put_le16(buf, wpa_s->sme.sae_send_confirm); 74 wpa_s->sme.sae_send_confirm++; 75 /* TODO: Confirm */ 76 77 return buf; 78} 79 80#endif /* CONFIG_SAE */ 81 82 83static void sme_send_authentication(struct wpa_supplicant *wpa_s, 84 struct wpa_bss *bss, struct wpa_ssid *ssid, 85 int start) 86{ 87 struct wpa_driver_auth_params params; 88 struct wpa_ssid *old_ssid; 89#ifdef CONFIG_IEEE80211R 90 const u8 *ie; 91#endif /* CONFIG_IEEE80211R */ 92#ifdef CONFIG_IEEE80211R 93 const u8 *md = NULL; 94#endif /* CONFIG_IEEE80211R */ 95 int i, bssid_changed; 96 struct wpabuf *resp = NULL; 97 u8 ext_capab[10]; 98 int ext_capab_len; 99 100 if (bss == NULL) { 101 wpa_msg(wpa_s, MSG_ERROR, "SME: No scan result available for " 102 "the network"); 103 return; 104 } 105 106 wpa_s->current_bss = bss; 107 108 os_memset(¶ms, 0, sizeof(params)); 109 wpa_s->reassociate = 0; 110 111 params.freq = bss->freq; 112 params.bssid = bss->bssid; 113 params.ssid = bss->ssid; 114 params.ssid_len = bss->ssid_len; 115 params.p2p = ssid->p2p_group; 116 117 if (wpa_s->sme.ssid_len != params.ssid_len || 118 os_memcmp(wpa_s->sme.ssid, params.ssid, params.ssid_len) != 0) 119 wpa_s->sme.prev_bssid_set = 0; 120 121 wpa_s->sme.freq = params.freq; 122 os_memcpy(wpa_s->sme.ssid, params.ssid, params.ssid_len); 123 wpa_s->sme.ssid_len = params.ssid_len; 124 125 params.auth_alg = WPA_AUTH_ALG_OPEN; 126#ifdef IEEE8021X_EAPOL 127 if (ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) { 128 if (ssid->leap) { 129 if (ssid->non_leap == 0) 130 params.auth_alg = WPA_AUTH_ALG_LEAP; 131 else 132 params.auth_alg |= WPA_AUTH_ALG_LEAP; 133 } 134 } 135#endif /* IEEE8021X_EAPOL */ 136 wpa_dbg(wpa_s, MSG_DEBUG, "Automatic auth_alg selection: 0x%x", 137 params.auth_alg); 138 if (ssid->auth_alg) { 139 params.auth_alg = ssid->auth_alg; 140 wpa_dbg(wpa_s, MSG_DEBUG, "Overriding auth_alg selection: " 141 "0x%x", params.auth_alg); 142 } 143#ifdef CONFIG_SAE 144 if (wpa_key_mgmt_sae(ssid->key_mgmt)) { 145 const u8 *rsn; 146 struct wpa_ie_data ied; 147 148 rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 149 if (rsn && 150 wpa_parse_wpa_ie(rsn, 2 + rsn[1], &ied) == 0) { 151 if (wpa_key_mgmt_sae(ied.key_mgmt)) { 152 wpa_dbg(wpa_s, MSG_DEBUG, "Using SAE auth_alg"); 153 params.auth_alg = WPA_AUTH_ALG_SAE; 154 } 155 } 156 } 157#endif /* CONFIG_SAE */ 158 159 for (i = 0; i < NUM_WEP_KEYS; i++) { 160 if (ssid->wep_key_len[i]) 161 params.wep_key[i] = ssid->wep_key[i]; 162 params.wep_key_len[i] = ssid->wep_key_len[i]; 163 } 164 params.wep_tx_keyidx = ssid->wep_tx_keyidx; 165 166 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 167 os_memset(wpa_s->bssid, 0, ETH_ALEN); 168 os_memcpy(wpa_s->pending_bssid, bss->bssid, ETH_ALEN); 169 if (bssid_changed) 170 wpas_notify_bssid_changed(wpa_s); 171 172 if ((wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE) || 173 wpa_bss_get_ie(bss, WLAN_EID_RSN)) && 174 wpa_key_mgmt_wpa(ssid->key_mgmt)) { 175 int try_opportunistic; 176 try_opportunistic = (ssid->proactive_key_caching < 0 ? 177 wpa_s->conf->okc : 178 ssid->proactive_key_caching) && 179 (ssid->proto & WPA_PROTO_RSN); 180 if (pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, 181 wpa_s->current_ssid, 182 try_opportunistic) == 0) 183 eapol_sm_notify_pmkid_attempt(wpa_s->eapol, 1); 184 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 185 if (wpa_supplicant_set_suites(wpa_s, bss, ssid, 186 wpa_s->sme.assoc_req_ie, 187 &wpa_s->sme.assoc_req_ie_len)) { 188 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 189 "key management and encryption suites"); 190 return; 191 } 192 } else if ((ssid->key_mgmt & WPA_KEY_MGMT_IEEE8021X_NO_WPA) && 193 wpa_key_mgmt_wpa_ieee8021x(ssid->key_mgmt)) { 194 /* 195 * Both WPA and non-WPA IEEE 802.1X enabled in configuration - 196 * use non-WPA since the scan results did not indicate that the 197 * AP is using WPA or WPA2. 198 */ 199 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 200 wpa_s->sme.assoc_req_ie_len = 0; 201 } else if (wpa_key_mgmt_wpa_any(ssid->key_mgmt)) { 202 wpa_s->sme.assoc_req_ie_len = sizeof(wpa_s->sme.assoc_req_ie); 203 if (wpa_supplicant_set_suites(wpa_s, NULL, ssid, 204 wpa_s->sme.assoc_req_ie, 205 &wpa_s->sme.assoc_req_ie_len)) { 206 wpa_msg(wpa_s, MSG_WARNING, "SME: Failed to set WPA " 207 "key management and encryption suites (no " 208 "scan results)"); 209 return; 210 } 211#ifdef CONFIG_WPS 212 } else if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { 213 struct wpabuf *wps_ie; 214 wps_ie = wps_build_assoc_req_ie(wpas_wps_get_req_type(ssid)); 215 if (wps_ie && wpabuf_len(wps_ie) <= 216 sizeof(wpa_s->sme.assoc_req_ie)) { 217 wpa_s->sme.assoc_req_ie_len = wpabuf_len(wps_ie); 218 os_memcpy(wpa_s->sme.assoc_req_ie, wpabuf_head(wps_ie), 219 wpa_s->sme.assoc_req_ie_len); 220 } else 221 wpa_s->sme.assoc_req_ie_len = 0; 222 wpabuf_free(wps_ie); 223 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 224#endif /* CONFIG_WPS */ 225 } else { 226 wpa_supplicant_set_non_wpa_policy(wpa_s, ssid); 227 wpa_s->sme.assoc_req_ie_len = 0; 228 } 229 230#ifdef CONFIG_IEEE80211R 231 ie = wpa_bss_get_ie(bss, WLAN_EID_MOBILITY_DOMAIN); 232 if (ie && ie[1] >= MOBILITY_DOMAIN_ID_LEN) 233 md = ie + 2; 234 wpa_sm_set_ft_params(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0); 235 if (md) { 236 /* Prepare for the next transition */ 237 wpa_ft_prepare_auth_request(wpa_s->wpa, ie); 238 } 239 240 if (md && wpa_key_mgmt_ft(ssid->key_mgmt)) { 241 if (wpa_s->sme.assoc_req_ie_len + 5 < 242 sizeof(wpa_s->sme.assoc_req_ie)) { 243 struct rsn_mdie *mdie; 244 u8 *pos = wpa_s->sme.assoc_req_ie + 245 wpa_s->sme.assoc_req_ie_len; 246 *pos++ = WLAN_EID_MOBILITY_DOMAIN; 247 *pos++ = sizeof(*mdie); 248 mdie = (struct rsn_mdie *) pos; 249 os_memcpy(mdie->mobility_domain, md, 250 MOBILITY_DOMAIN_ID_LEN); 251 mdie->ft_capab = md[MOBILITY_DOMAIN_ID_LEN]; 252 wpa_s->sme.assoc_req_ie_len += 5; 253 } 254 255 if (wpa_s->sme.ft_used && 256 os_memcmp(md, wpa_s->sme.mobility_domain, 2) == 0 && 257 wpa_sm_has_ptk(wpa_s->wpa)) { 258 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying to use FT " 259 "over-the-air"); 260 params.auth_alg = WPA_AUTH_ALG_FT; 261 params.ie = wpa_s->sme.ft_ies; 262 params.ie_len = wpa_s->sme.ft_ies_len; 263 } 264 } 265#endif /* CONFIG_IEEE80211R */ 266 267#ifdef CONFIG_IEEE80211W 268 wpa_s->sme.mfp = ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 269 wpa_s->conf->pmf : ssid->ieee80211w; 270 if (wpa_s->sme.mfp != NO_MGMT_FRAME_PROTECTION) { 271 const u8 *rsn = wpa_bss_get_ie(bss, WLAN_EID_RSN); 272 struct wpa_ie_data _ie; 273 if (rsn && wpa_parse_wpa_ie(rsn, 2 + rsn[1], &_ie) == 0 && 274 _ie.capabilities & 275 (WPA_CAPABILITY_MFPC | WPA_CAPABILITY_MFPR)) { 276 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected AP supports " 277 "MFP: require MFP"); 278 wpa_s->sme.mfp = MGMT_FRAME_PROTECTION_REQUIRED; 279 } 280 } 281#endif /* CONFIG_IEEE80211W */ 282 283#ifdef CONFIG_P2P 284 if (wpa_s->global->p2p) { 285 u8 *pos; 286 size_t len; 287 int res; 288 pos = wpa_s->sme.assoc_req_ie + wpa_s->sme.assoc_req_ie_len; 289 len = sizeof(wpa_s->sme.assoc_req_ie) - 290 wpa_s->sme.assoc_req_ie_len; 291 res = wpas_p2p_assoc_req_ie(wpa_s, bss, pos, len, 292 ssid->p2p_group); 293 if (res >= 0) 294 wpa_s->sme.assoc_req_ie_len += res; 295 } 296#endif /* CONFIG_P2P */ 297 298#ifdef CONFIG_HS20 299 if (wpa_s->conf->hs20) { 300 struct wpabuf *hs20; 301 hs20 = wpabuf_alloc(20); 302 if (hs20) { 303 wpas_hs20_add_indication(hs20); 304 os_memcpy(wpa_s->sme.assoc_req_ie + 305 wpa_s->sme.assoc_req_ie_len, 306 wpabuf_head(hs20), wpabuf_len(hs20)); 307 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20); 308 wpabuf_free(hs20); 309 } 310 } 311#endif /* CONFIG_HS20 */ 312 313 ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab); 314 if (ext_capab_len > 0) { 315 u8 *pos = wpa_s->sme.assoc_req_ie; 316 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN) 317 pos += 2 + pos[1]; 318 os_memmove(pos + ext_capab_len, pos, 319 wpa_s->sme.assoc_req_ie_len - 320 (pos - wpa_s->sme.assoc_req_ie)); 321 wpa_s->sme.assoc_req_ie_len += ext_capab_len; 322 os_memcpy(pos, ext_capab, ext_capab_len); 323 } 324 325#ifdef CONFIG_SAE 326 if (params.auth_alg == WPA_AUTH_ALG_SAE) { 327 if (start) 328 resp = sme_auth_build_sae_commit(wpa_s); 329 else 330 resp = sme_auth_build_sae_confirm(wpa_s); 331 if (resp == NULL) 332 return; 333 params.sae_data = wpabuf_head(resp); 334 params.sae_data_len = wpabuf_len(resp); 335 wpa_s->sme.sae_state = start ? SME_SAE_COMMIT : SME_SAE_CONFIRM; 336 } 337#endif /* CONFIG_SAE */ 338 339 wpa_supplicant_cancel_sched_scan(wpa_s); 340 wpa_supplicant_cancel_scan(wpa_s); 341 342 wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR 343 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 344 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq); 345 346 wpa_clear_keys(wpa_s, bss->bssid); 347 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 348 old_ssid = wpa_s->current_ssid; 349 wpa_s->current_ssid = ssid; 350 wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid); 351 wpa_supplicant_initiate_eapol(wpa_s); 352 if (old_ssid != wpa_s->current_ssid) 353 wpas_notify_network_changed(wpa_s); 354 355 wpa_s->sme.auth_alg = params.auth_alg; 356 if (wpa_drv_authenticate(wpa_s, ¶ms) < 0) { 357 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the " 358 "driver failed"); 359 wpas_connection_failed(wpa_s, bss->bssid); 360 wpa_supplicant_mark_disassoc(wpa_s); 361 wpabuf_free(resp); 362 return; 363 } 364 365 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 366 NULL); 367 368 /* 369 * Association will be started based on the authentication event from 370 * the driver. 371 */ 372 373 wpabuf_free(resp); 374} 375 376 377void sme_authenticate(struct wpa_supplicant *wpa_s, 378 struct wpa_bss *bss, struct wpa_ssid *ssid) 379{ 380 wpa_s->sme.sae_state = SME_SAE_INIT; 381 wpa_s->sme.sae_send_confirm = 0; 382 sme_send_authentication(wpa_s, bss, ssid, 1); 383} 384 385 386#ifdef CONFIG_SAE 387 388static int sme_sae_process_commit(struct wpa_supplicant *wpa_s, const u8 *data, 389 size_t len) 390{ 391 /* Check Finite Cyclic Group */ 392 if (len < 2) 393 return -1; 394 if (WPA_GET_LE16(data) != 19) { 395 wpa_printf(MSG_DEBUG, "SAE: Unsupported Finite Cyclic Group %u", 396 WPA_GET_LE16(data)); 397 return -1; 398 } 399 400 /* TODO */ 401 402 return 0; 403} 404 405 406static int sme_sae_process_confirm(struct wpa_supplicant *wpa_s, const u8 *data, 407 size_t len) 408{ 409 u16 rc; 410 411 if (len < 2) 412 return -1; 413 rc = WPA_GET_LE16(data); 414 wpa_printf(MSG_DEBUG, "SAE: peer-send-confirm %u", rc); 415 416 /* TODO */ 417 return 0; 418} 419 420 421static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction, 422 u16 status_code, const u8 *data, size_t len) 423{ 424 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u " 425 "status code %u", auth_transaction, status_code); 426 wpa_hexdump(MSG_DEBUG, "SME: SAE fields", data, len); 427 428 if (status_code != WLAN_STATUS_SUCCESS) 429 return -1; 430 431 if (auth_transaction == 1) { 432 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit"); 433 if (wpa_s->current_bss == NULL || 434 wpa_s->current_ssid == NULL) 435 return -1; 436 if (wpa_s->sme.sae_state != SME_SAE_COMMIT) 437 return -1; 438 if (sme_sae_process_commit(wpa_s, data, len) < 0) 439 return -1; 440 sme_send_authentication(wpa_s, wpa_s->current_bss, 441 wpa_s->current_ssid, 0); 442 return 0; 443 } else if (auth_transaction == 2) { 444 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm"); 445 if (wpa_s->sme.sae_state != SME_SAE_CONFIRM) 446 return -1; 447 if (sme_sae_process_confirm(wpa_s, data, len) < 0) 448 return -1; 449 return 1; 450 } 451 452 return -1; 453} 454#endif /* CONFIG_SAE */ 455 456 457void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data) 458{ 459 struct wpa_ssid *ssid = wpa_s->current_ssid; 460 461 if (ssid == NULL) { 462 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 463 "when network is not selected"); 464 return; 465 } 466 467 if (wpa_s->wpa_state != WPA_AUTHENTICATING) { 468 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event " 469 "when not in authenticating state"); 470 return; 471 } 472 473 if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) { 474 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with " 475 "unexpected peer " MACSTR, 476 MAC2STR(data->auth.peer)); 477 return; 478 } 479 480 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR 481 " auth_type=%d auth_transaction=%d status_code=%d", 482 MAC2STR(data->auth.peer), data->auth.auth_type, 483 data->auth.auth_transaction, data->auth.status_code); 484 wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs", 485 data->auth.ies, data->auth.ies_len); 486 487 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 488 489#ifdef CONFIG_SAE 490 if (data->auth.auth_type == WLAN_AUTH_SAE) { 491 int res; 492 res = sme_sae_auth(wpa_s, data->auth.auth_transaction, 493 data->auth.status_code, data->auth.ies, 494 data->auth.ies_len); 495 if (res < 0) { 496 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 497 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 498 499 } 500 if (res != 1) 501 return; 502 } 503#endif /* CONFIG_SAE */ 504 505 if (data->auth.status_code != WLAN_STATUS_SUCCESS) { 506 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication failed (status " 507 "code %d)", data->auth.status_code); 508 509 if (data->auth.status_code != 510 WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG || 511 wpa_s->sme.auth_alg == data->auth.auth_type || 512 wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) { 513 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 514 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 515 return; 516 } 517 518 switch (data->auth.auth_type) { 519 case WLAN_AUTH_OPEN: 520 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED; 521 522 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth"); 523 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 524 wpa_s->current_ssid); 525 return; 526 527 case WLAN_AUTH_SHARED_KEY: 528 wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP; 529 530 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth"); 531 wpa_supplicant_associate(wpa_s, wpa_s->current_bss, 532 wpa_s->current_ssid); 533 return; 534 535 default: 536 return; 537 } 538 } 539 540#ifdef CONFIG_IEEE80211R 541 if (data->auth.auth_type == WLAN_AUTH_FT) { 542 union wpa_event_data edata; 543 os_memset(&edata, 0, sizeof(edata)); 544 edata.ft_ies.ies = data->auth.ies; 545 edata.ft_ies.ies_len = data->auth.ies_len; 546 os_memcpy(edata.ft_ies.target_ap, data->auth.peer, ETH_ALEN); 547 wpa_supplicant_event(wpa_s, EVENT_FT_RESPONSE, &edata); 548 } 549#endif /* CONFIG_IEEE80211R */ 550 551 sme_associate(wpa_s, ssid->mode, data->auth.peer, 552 data->auth.auth_type); 553} 554 555 556void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode, 557 const u8 *bssid, u16 auth_type) 558{ 559 struct wpa_driver_associate_params params; 560 struct ieee802_11_elems elems; 561#ifdef CONFIG_HT_OVERRIDES 562 struct ieee80211_ht_capabilities htcaps; 563 struct ieee80211_ht_capabilities htcaps_mask; 564#endif /* CONFIG_HT_OVERRIDES */ 565 566 os_memset(¶ms, 0, sizeof(params)); 567 params.bssid = bssid; 568 params.ssid = wpa_s->sme.ssid; 569 params.ssid_len = wpa_s->sme.ssid_len; 570 params.freq = wpa_s->sme.freq; 571 params.bg_scan_period = wpa_s->current_ssid ? 572 wpa_s->current_ssid->bg_scan_period : -1; 573 params.wpa_ie = wpa_s->sme.assoc_req_ie_len ? 574 wpa_s->sme.assoc_req_ie : NULL; 575 params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len; 576 params.pairwise_suite = cipher_suite2driver(wpa_s->pairwise_cipher); 577 params.group_suite = cipher_suite2driver(wpa_s->group_cipher); 578#ifdef CONFIG_HT_OVERRIDES 579 os_memset(&htcaps, 0, sizeof(htcaps)); 580 os_memset(&htcaps_mask, 0, sizeof(htcaps_mask)); 581 params.htcaps = (u8 *) &htcaps; 582 params.htcaps_mask = (u8 *) &htcaps_mask; 583 wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, ¶ms); 584#endif /* CONFIG_HT_OVERRIDES */ 585#ifdef CONFIG_IEEE80211R 586 if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) { 587 params.wpa_ie = wpa_s->sme.ft_ies; 588 params.wpa_ie_len = wpa_s->sme.ft_ies_len; 589 } 590#endif /* CONFIG_IEEE80211R */ 591 params.mode = mode; 592 params.mgmt_frame_protection = wpa_s->sme.mfp; 593 if (wpa_s->sme.prev_bssid_set) 594 params.prev_bssid = wpa_s->sme.prev_bssid; 595 596 wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR 597 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid), 598 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "", 599 params.freq); 600 601 wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING); 602 603 if (params.wpa_ie == NULL || 604 ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0) 605 < 0) { 606 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!"); 607 os_memset(&elems, 0, sizeof(elems)); 608 } 609 if (elems.rsn_ie) { 610 params.wpa_proto = WPA_PROTO_RSN; 611 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2, 612 elems.rsn_ie_len + 2); 613 } else if (elems.wpa_ie) { 614 params.wpa_proto = WPA_PROTO_WPA; 615 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2, 616 elems.wpa_ie_len + 2); 617 } else 618 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0); 619 if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group) 620 params.p2p = 1; 621 622 if (wpa_s->parent->set_sta_uapsd) 623 params.uapsd = wpa_s->parent->sta_uapsd; 624 else 625 params.uapsd = -1; 626 627 if (wpa_drv_associate(wpa_s, ¶ms) < 0) { 628 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the " 629 "driver failed"); 630 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 631 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 632 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 633 return; 634 } 635 636 eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s, 637 NULL); 638} 639 640 641int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md, 642 const u8 *ies, size_t ies_len) 643{ 644 if (md == NULL || ies == NULL) { 645 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain"); 646 os_free(wpa_s->sme.ft_ies); 647 wpa_s->sme.ft_ies = NULL; 648 wpa_s->sme.ft_ies_len = 0; 649 wpa_s->sme.ft_used = 0; 650 return 0; 651 } 652 653 os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN); 654 wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len); 655 os_free(wpa_s->sme.ft_ies); 656 wpa_s->sme.ft_ies = os_malloc(ies_len); 657 if (wpa_s->sme.ft_ies == NULL) 658 return -1; 659 os_memcpy(wpa_s->sme.ft_ies, ies, ies_len); 660 wpa_s->sme.ft_ies_len = ies_len; 661 return 0; 662} 663 664 665static void sme_deauth(struct wpa_supplicant *wpa_s) 666{ 667 int bssid_changed; 668 669 bssid_changed = !is_zero_ether_addr(wpa_s->bssid); 670 671 if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid, 672 WLAN_REASON_DEAUTH_LEAVING) < 0) { 673 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver " 674 "failed"); 675 } 676 wpa_s->sme.prev_bssid_set = 0; 677 678 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 679 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED); 680 os_memset(wpa_s->bssid, 0, ETH_ALEN); 681 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN); 682 if (bssid_changed) 683 wpas_notify_bssid_changed(wpa_s); 684} 685 686 687void sme_event_assoc_reject(struct wpa_supplicant *wpa_s, 688 union wpa_event_data *data) 689{ 690 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: " 691 "status code %d", MAC2STR(wpa_s->pending_bssid), 692 data->assoc_reject.status_code); 693 694 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 695 696 /* 697 * For now, unconditionally terminate the previous authentication. In 698 * theory, this should not be needed, but mac80211 gets quite confused 699 * if the authentication is left pending.. Some roaming cases might 700 * benefit from using the previous authentication, so this could be 701 * optimized in the future. 702 */ 703 sme_deauth(wpa_s); 704} 705 706 707void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s, 708 union wpa_event_data *data) 709{ 710 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out"); 711 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 712 wpa_supplicant_mark_disassoc(wpa_s); 713} 714 715 716void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s, 717 union wpa_event_data *data) 718{ 719 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out"); 720 wpas_connection_failed(wpa_s, wpa_s->pending_bssid); 721 wpa_supplicant_mark_disassoc(wpa_s); 722} 723 724 725void sme_event_disassoc(struct wpa_supplicant *wpa_s, 726 union wpa_event_data *data) 727{ 728 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received"); 729 if (wpa_s->sme.prev_bssid_set) { 730 /* 731 * cfg80211/mac80211 can get into somewhat confused state if 732 * the AP only disassociates us and leaves us in authenticated 733 * state. For now, force the state to be cleared to avoid 734 * confusing errors if we try to associate with the AP again. 735 */ 736 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear " 737 "driver state"); 738 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid, 739 WLAN_REASON_DEAUTH_LEAVING); 740 } 741} 742 743 744static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx) 745{ 746 struct wpa_supplicant *wpa_s = eloop_ctx; 747 if (wpa_s->wpa_state == WPA_AUTHENTICATING) { 748 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout"); 749 sme_deauth(wpa_s); 750 } 751} 752 753 754static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx) 755{ 756 struct wpa_supplicant *wpa_s = eloop_ctx; 757 if (wpa_s->wpa_state == WPA_ASSOCIATING) { 758 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout"); 759 sme_deauth(wpa_s); 760 } 761} 762 763 764void sme_state_changed(struct wpa_supplicant *wpa_s) 765{ 766 /* Make sure timers are cleaned up appropriately. */ 767 if (wpa_s->wpa_state != WPA_ASSOCIATING) 768 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 769 if (wpa_s->wpa_state != WPA_AUTHENTICATING) 770 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 771} 772 773 774void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s, 775 const u8 *prev_pending_bssid) 776{ 777 /* 778 * mac80211-workaround to force deauth on failed auth cmd, 779 * requires us to remain in authenticating state to allow the 780 * second authentication attempt to be continued properly. 781 */ 782 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication " 783 "to proceed after disconnection event"); 784 wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING); 785 os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN); 786 787 /* 788 * Re-arm authentication timer in case auth fails for whatever reason. 789 */ 790 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 791 eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s, 792 NULL); 793} 794 795 796void sme_deinit(struct wpa_supplicant *wpa_s) 797{ 798 os_free(wpa_s->sme.ft_ies); 799 wpa_s->sme.ft_ies = NULL; 800 wpa_s->sme.ft_ies_len = 0; 801#ifdef CONFIG_IEEE80211W 802 sme_stop_sa_query(wpa_s); 803#endif /* CONFIG_IEEE80211W */ 804 805 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL); 806 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL); 807 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 808} 809 810 811static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s, 812 const u8 *chan_list, u8 num_channels, 813 u8 num_intol) 814{ 815 struct ieee80211_2040_bss_coex_ie *bc_ie; 816 struct ieee80211_2040_intol_chan_report *ic_report; 817 struct wpabuf *buf; 818 819 wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR, 820 MAC2STR(wpa_s->bssid)); 821 822 buf = wpabuf_alloc(2 + /* action.category + action_code */ 823 sizeof(struct ieee80211_2040_bss_coex_ie) + 824 sizeof(struct ieee80211_2040_intol_chan_report) + 825 num_channels); 826 if (buf == NULL) 827 return; 828 829 wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC); 830 wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX); 831 832 bc_ie = wpabuf_put(buf, sizeof(*bc_ie)); 833 bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE; 834 bc_ie->length = 1; 835 if (num_intol) 836 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ; 837 838 if (num_channels > 0) { 839 ic_report = wpabuf_put(buf, sizeof(*ic_report)); 840 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT; 841 ic_report->length = num_channels + 1; 842 ic_report->op_class = 0; 843 os_memcpy(wpabuf_put(buf, num_channels), chan_list, 844 num_channels); 845 } 846 847 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 848 wpa_s->own_addr, wpa_s->bssid, 849 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) { 850 wpa_msg(wpa_s, MSG_INFO, 851 "SME: Failed to send 20/40 BSS Coexistence frame"); 852 } 853 854 wpabuf_free(buf); 855} 856 857 858/** 859 * enum wpas_band - Frequency band 860 * @WPAS_BAND_2GHZ: 2.4 GHz ISM band 861 * @WPAS_BAND_5GHZ: around 5 GHz band (4.9 - 5.7 GHz) 862 */ 863enum wpas_band { 864 WPAS_BAND_2GHZ, 865 WPAS_BAND_5GHZ, 866 WPAS_BAND_INVALID 867}; 868 869/** 870 * freq_to_channel - Convert frequency into channel info 871 * @channel: Buffer for returning channel number 872 * Returns: Band (2 or 5 GHz) 873 */ 874static enum wpas_band freq_to_channel(int freq, u8 *channel) 875{ 876 enum wpas_band band = (freq <= 2484) ? WPAS_BAND_2GHZ : WPAS_BAND_5GHZ; 877 u8 chan = 0; 878 879 if (freq >= 2412 && freq <= 2472) 880 chan = (freq - 2407) / 5; 881 else if (freq == 2484) 882 chan = 14; 883 else if (freq >= 5180 && freq <= 5805) 884 chan = (freq - 5000) / 5; 885 886 *channel = chan; 887 return band; 888} 889 890 891int sme_proc_obss_scan(struct wpa_supplicant *wpa_s) 892{ 893 struct wpa_bss *bss; 894 const u8 *ie; 895 u16 ht_cap; 896 u8 chan_list[P2P_MAX_CHANNELS], channel; 897 u8 num_channels = 0, num_intol = 0, i; 898 899 if (!wpa_s->sme.sched_obss_scan) 900 return 0; 901 902 wpa_s->sme.sched_obss_scan = 0; 903 if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED) 904 return 1; 905 906 /* 907 * Check whether AP uses regulatory triplet or channel triplet in 908 * country info. Right now the operating class of the BSS channel 909 * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12), 910 * based on the assumption that operating class triplet is not used in 911 * beacon frame. If the First Channel Number/Operating Extension 912 * Identifier octet has a positive integer value of 201 or greater, 913 * then its operating class triplet. 914 * 915 * TODO: If Supported Operating Classes element is present in beacon 916 * frame, have to lookup operating class in Annex E and fill them in 917 * 2040 coex frame. 918 */ 919 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY); 920 if (ie && (ie[1] >= 6) && (ie[5] >= 201)) 921 return 1; 922 923 os_memset(chan_list, 0, sizeof(chan_list)); 924 925 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { 926 /* Skip other band bss */ 927 if (freq_to_channel(bss->freq, &channel) != WPAS_BAND_2GHZ) 928 continue; 929 930 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP); 931 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0; 932 933 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) { 934 /* Check whether the channel is already considered */ 935 for (i = 0; i < num_channels; i++) { 936 if (channel == chan_list[i]) 937 break; 938 } 939 if (i != num_channels) 940 continue; 941 942 if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT) 943 num_intol++; 944 945 chan_list[num_channels++] = channel; 946 } 947 } 948 949 sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol); 950 return 1; 951} 952 953 954static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes, 955 u16 num_modes, 956 enum hostapd_hw_mode mode) 957{ 958 u16 i; 959 960 for (i = 0; i < num_modes; i++) { 961 if (modes[i].mode == mode) 962 return &modes[i]; 963 } 964 965 return NULL; 966} 967 968 969static void wpa_setband_scan_freqs_list(struct wpa_supplicant *wpa_s, 970 enum hostapd_hw_mode band, 971 struct wpa_driver_scan_params *params) 972{ 973 /* Include only supported channels for the specified band */ 974 struct hostapd_hw_modes *mode; 975 int count, i; 976 977 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, band); 978 if (mode == NULL) { 979 /* No channels supported in this band - use empty list */ 980 params->freqs = os_zalloc(sizeof(int)); 981 return; 982 } 983 984 params->freqs = os_calloc(mode->num_channels + 1, sizeof(int)); 985 if (params->freqs == NULL) 986 return; 987 for (count = 0, i = 0; i < mode->num_channels; i++) { 988 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED) 989 continue; 990 params->freqs[count++] = mode->channels[i].freq; 991 } 992} 993 994 995static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx) 996{ 997 struct wpa_supplicant *wpa_s = eloop_ctx; 998 struct wpa_driver_scan_params params; 999 1000 if (!wpa_s->current_bss) { 1001 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request"); 1002 return; 1003 } 1004 1005 os_memset(¶ms, 0, sizeof(params)); 1006 wpa_setband_scan_freqs_list(wpa_s, HOSTAPD_MODE_IEEE80211G, ¶ms); 1007 wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan"); 1008 1009 if (wpa_supplicant_trigger_scan(wpa_s, ¶ms)) 1010 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan"); 1011 else 1012 wpa_s->sme.sched_obss_scan = 1; 1013 os_free(params.freqs); 1014 1015 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1016 sme_obss_scan_timeout, wpa_s, NULL); 1017} 1018 1019 1020void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable) 1021{ 1022 const u8 *ie; 1023 struct wpa_bss *bss = wpa_s->current_bss; 1024 struct wpa_ssid *ssid = wpa_s->current_ssid; 1025 struct hostapd_hw_modes *hw_mode = NULL; 1026 int i; 1027 1028 eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL); 1029 wpa_s->sme.sched_obss_scan = 0; 1030 if (!enable) 1031 return; 1032 1033 /* 1034 * Schedule OBSS scan if driver is using station SME in wpa_supplicant 1035 * or it expects OBSS scan to be performed by wpa_supplicant. 1036 */ 1037 if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) || 1038 (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) || 1039 ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA) 1040 return; 1041 1042 if (!wpa_s->hw.modes) 1043 return; 1044 1045 /* only HT caps in 11g mode are relevant */ 1046 for (i = 0; i < wpa_s->hw.num_modes; i++) { 1047 hw_mode = &wpa_s->hw.modes[i]; 1048 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G) 1049 break; 1050 } 1051 1052 /* Driver does not support HT40 for 11g or doesn't have 11g. */ 1053 if (i == wpa_s->hw.num_modes || !hw_mode || 1054 !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1055 return; 1056 1057 if (bss == NULL || bss->freq < 2400 || bss->freq > 2500) 1058 return; /* Not associated on 2.4 GHz band */ 1059 1060 /* Check whether AP supports HT40 */ 1061 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP); 1062 if (!ie || ie[1] < 2 || 1063 !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET)) 1064 return; /* AP does not support HT40 */ 1065 1066 ie = wpa_bss_get_ie(wpa_s->current_bss, 1067 WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS); 1068 if (!ie || ie[1] < 14) 1069 return; /* AP does not request OBSS scans */ 1070 1071 wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6); 1072 if (wpa_s->sme.obss_scan_int < 10) { 1073 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u " 1074 "replaced with the minimum 10 sec", 1075 wpa_s->sme.obss_scan_int); 1076 wpa_s->sme.obss_scan_int = 10; 1077 } 1078 wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec", 1079 wpa_s->sme.obss_scan_int); 1080 eloop_register_timeout(wpa_s->sme.obss_scan_int, 0, 1081 sme_obss_scan_timeout, wpa_s, NULL); 1082} 1083 1084 1085#ifdef CONFIG_IEEE80211W 1086 1087static const unsigned int sa_query_max_timeout = 1000; 1088static const unsigned int sa_query_retry_timeout = 201; 1089 1090static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s) 1091{ 1092 u32 tu; 1093 struct os_time now, passed; 1094 os_get_time(&now); 1095 os_time_sub(&now, &wpa_s->sme.sa_query_start, &passed); 1096 tu = (passed.sec * 1000000 + passed.usec) / 1024; 1097 if (sa_query_max_timeout < tu) { 1098 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out"); 1099 sme_stop_sa_query(wpa_s); 1100 wpa_supplicant_deauthenticate( 1101 wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID); 1102 return 1; 1103 } 1104 1105 return 0; 1106} 1107 1108 1109static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s, 1110 const u8 *trans_id) 1111{ 1112 u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN]; 1113 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to " 1114 MACSTR, MAC2STR(wpa_s->bssid)); 1115 wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID", 1116 trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1117 req[0] = WLAN_ACTION_SA_QUERY; 1118 req[1] = WLAN_SA_QUERY_REQUEST; 1119 os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1120 if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid, 1121 wpa_s->own_addr, wpa_s->bssid, 1122 req, sizeof(req), 0) < 0) 1123 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query " 1124 "Request"); 1125} 1126 1127 1128static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx) 1129{ 1130 struct wpa_supplicant *wpa_s = eloop_ctx; 1131 unsigned int timeout, sec, usec; 1132 u8 *trans_id, *nbuf; 1133 1134 if (wpa_s->sme.sa_query_count > 0 && 1135 sme_check_sa_query_timeout(wpa_s)) 1136 return; 1137 1138 nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id, 1139 wpa_s->sme.sa_query_count + 1, 1140 WLAN_SA_QUERY_TR_ID_LEN); 1141 if (nbuf == NULL) 1142 return; 1143 if (wpa_s->sme.sa_query_count == 0) { 1144 /* Starting a new SA Query procedure */ 1145 os_get_time(&wpa_s->sme.sa_query_start); 1146 } 1147 trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN; 1148 wpa_s->sme.sa_query_trans_id = nbuf; 1149 wpa_s->sme.sa_query_count++; 1150 1151 os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN); 1152 1153 timeout = sa_query_retry_timeout; 1154 sec = ((timeout / 1000) * 1024) / 1000; 1155 usec = (timeout % 1000) * 1024; 1156 eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL); 1157 1158 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d", 1159 wpa_s->sme.sa_query_count); 1160 1161 sme_send_sa_query_req(wpa_s, trans_id); 1162} 1163 1164 1165static void sme_start_sa_query(struct wpa_supplicant *wpa_s) 1166{ 1167 sme_sa_query_timer(wpa_s, NULL); 1168} 1169 1170 1171static void sme_stop_sa_query(struct wpa_supplicant *wpa_s) 1172{ 1173 eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL); 1174 os_free(wpa_s->sme.sa_query_trans_id); 1175 wpa_s->sme.sa_query_trans_id = NULL; 1176 wpa_s->sme.sa_query_count = 0; 1177} 1178 1179 1180void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa, 1181 const u8 *da, u16 reason_code) 1182{ 1183 struct wpa_ssid *ssid; 1184 1185 if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)) 1186 return; 1187 if (wpa_s->wpa_state != WPA_COMPLETED) 1188 return; 1189 ssid = wpa_s->current_ssid; 1190 if (ssid == NULL || 1191 (ssid->ieee80211w == MGMT_FRAME_PROTECTION_DEFAULT ? 1192 wpa_s->conf->pmf : ssid->ieee80211w) == NO_MGMT_FRAME_PROTECTION) 1193 return; 1194 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1195 return; 1196 if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA && 1197 reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA) 1198 return; 1199 if (wpa_s->sme.sa_query_count > 0) 1200 return; 1201 1202 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - " 1203 "possible AP/STA state mismatch - trigger SA Query"); 1204 sme_start_sa_query(wpa_s); 1205} 1206 1207 1208void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa, 1209 const u8 *data, size_t len) 1210{ 1211 int i; 1212 1213 if (wpa_s->sme.sa_query_trans_id == NULL || 1214 len < 1 + WLAN_SA_QUERY_TR_ID_LEN || 1215 data[0] != WLAN_SA_QUERY_RESPONSE) 1216 return; 1217 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from " 1218 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]); 1219 1220 if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0) 1221 return; 1222 1223 for (i = 0; i < wpa_s->sme.sa_query_count; i++) { 1224 if (os_memcmp(wpa_s->sme.sa_query_trans_id + 1225 i * WLAN_SA_QUERY_TR_ID_LEN, 1226 data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0) 1227 break; 1228 } 1229 1230 if (i >= wpa_s->sme.sa_query_count) { 1231 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query " 1232 "transaction identifier found"); 1233 return; 1234 } 1235 1236 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received " 1237 "from " MACSTR, MAC2STR(sa)); 1238 sme_stop_sa_query(wpa_s); 1239} 1240 1241#endif /* CONFIG_IEEE80211W */ 1242