wpa_supplicant/sme.c

   1 /*
   2  * wpa_supplicant - SME
   3  * Copyright (c) 2009-2014, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "eapol_supp/eapol_supp_sm.h"
  16 #include "common/wpa_common.h"
  17 #include "common/sae.h"
  18 #include "rsn_supp/wpa.h"
  19 #include "rsn_supp/pmksa_cache.h"
  20 #include "config.h"
  21 #include "wpa_supplicant_i.h"
  22 #include "driver_i.h"
  23 #include "wpas_glue.h"
  24 #include "wps_supplicant.h"
  25 #include "p2p_supplicant.h"
  26 #include "notify.h"
  27 #include "bss.h"
  28 #include "scan.h"
  29 #include "sme.h"
  30 #include "hs20_supplicant.h"
  31
  32 #define SME_AUTH_TIMEOUT 5
  33 #define SME_ASSOC_TIMEOUT 5
  34
  35 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx);
  36 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx);
  37 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx);
  38 #ifdef CONFIG_IEEE80211W
  39 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s);
  40 #endif /* CONFIG_IEEE80211W */
  41
  42
  43 #ifdef CONFIG_SAE
  44
  45 static int index_within_array(const int *array, int idx)
  46 {
  47         int i;
  48         for (i = 0; i < idx; i++) {
  49                 if (array[i] <= 0)
  50                         return 0;
  51         }
  52         return 1;
  53 }
  54
  55
  56 static int sme_set_sae_group(struct wpa_supplicant *wpa_s)
  57 {
  58         int *groups = wpa_s->conf->sae_groups;
  59         int default_groups[] = { 19, 20, 21, 25, 26, 0 };
  60
  61         if (!groups || groups[0] <= 0)
  62                 groups = default_groups;
  63
  64         /* Configuration may have changed, so validate current index */
  65         if (!index_within_array(groups, wpa_s->sme.sae_group_index))
  66                 return -1;
  67
  68         for (;;) {
  69                 int group = groups[wpa_s->sme.sae_group_index];
  70                 if (group <= 0)
  71                         break;
  72                 if (sae_set_group(&wpa_s->sme.sae, group) == 0) {
  73                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Selected SAE group %d",
  74                                 wpa_s->sme.sae.group);
  75                        return 0;
  76                 }
  77                 wpa_s->sme.sae_group_index++;
  78         }
  79
  80         return -1;
  81 }
  82
  83
  84 static struct wpabuf * sme_auth_build_sae_commit(struct wpa_supplicant *wpa_s,
  85                                                  struct wpa_ssid *ssid,
  86                                                  const u8 *bssid)
  87 {
  88         struct wpabuf *buf;
  89         size_t len;
  90
  91         if (ssid->passphrase == NULL) {
  92                 wpa_printf(MSG_DEBUG, "SAE: No password available");
  93                 return NULL;
  94         }
  95
  96         if (sme_set_sae_group(wpa_s) < 0) {
  97                 wpa_printf(MSG_DEBUG, "SAE: Failed to select group");
  98                 return NULL;
  99         }
 100
 101         if (sae_prepare_commit(wpa_s->own_addr, bssid,
 102                                (u8 *) ssid->passphrase,
 103                                os_strlen(ssid->passphrase),
 104                                &wpa_s->sme.sae) < 0) {
 105                 wpa_printf(MSG_DEBUG, "SAE: Could not pick PWE");
 106                 return NULL;
 107         }
 108
 109         len = wpa_s->sme.sae_token ? wpabuf_len(wpa_s->sme.sae_token) : 0;
 110         buf = wpabuf_alloc(4 + SAE_COMMIT_MAX_LEN + len);
 111         if (buf == NULL)
 112                 return NULL;
 113
 114         wpabuf_put_le16(buf, 1); /* Transaction seq# */
 115         wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
 116         sae_write_commit(&wpa_s->sme.sae, buf, wpa_s->sme.sae_token);
 117
 118         return buf;
 119 }
 120
 121
 122 static struct wpabuf * sme_auth_build_sae_confirm(struct wpa_supplicant *wpa_s)
 123 {
 124         struct wpabuf *buf;
 125
 126         buf = wpabuf_alloc(4 + SAE_CONFIRM_MAX_LEN);
 127         if (buf == NULL)
 128                 return NULL;
 129
 130         wpabuf_put_le16(buf, 2); /* Transaction seq# */
 131         wpabuf_put_le16(buf, WLAN_STATUS_SUCCESS);
 132         sae_write_confirm(&wpa_s->sme.sae, buf);
 133
 134         return buf;
 135 }
 136
 137 #endif /* CONFIG_SAE */
 138
 139
 140 /**
 141  * sme_auth_handle_rrm - Handle RRM aspects of current authentication attempt
 142  * @wpa_s: Pointer to wpa_supplicant data
 143  * @bss: Pointer to the bss which is the target of authentication attempt
 144  */
 145 static void sme_auth_handle_rrm(struct wpa_supplicant *wpa_s,
 146                                 struct wpa_bss *bss)
 147 {
 148         const u8 rrm_ie_len = 5;
 149         u8 *pos;
 150         const u8 *rrm_ie;
 151
 152         wpa_s->rrm.rrm_used = 0;
 153
 154         wpa_printf(MSG_DEBUG,
 155                    "RRM: Determining whether RRM can be used - device support: 0x%x",
 156                    wpa_s->drv_rrm_flags);
 157
 158         rrm_ie = wpa_bss_get_ie(bss, WLAN_EID_RRM_ENABLED_CAPABILITIES);
 159         if (!rrm_ie || !(bss->caps & IEEE80211_CAP_RRM)) {
 160                 wpa_printf(MSG_DEBUG, "RRM: No RRM in network");
 161                 return;
 162         }
 163
 164         if (!((wpa_s->drv_rrm_flags &
 165                WPA_DRIVER_FLAGS_DS_PARAM_SET_IE_IN_PROBES) &&
 166               (wpa_s->drv_rrm_flags & WPA_DRIVER_FLAGS_QUIET)) &&
 167             !(wpa_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
 198 static 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(&params, 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         ext_capab_len = wpas_build_ext_capab(wpa_s, ext_capab,
 459                                              sizeof(ext_capab));
 460         if (ext_capab_len > 0) {
 461                 u8 *pos = wpa_s->sme.assoc_req_ie;
 462                 if (wpa_s->sme.assoc_req_ie_len > 0 && pos[0] == WLAN_EID_RSN)
 463                         pos += 2 + pos[1];
 464                 os_memmove(pos + ext_capab_len, pos,
 465                            wpa_s->sme.assoc_req_ie_len -
 466                            (pos - wpa_s->sme.assoc_req_ie));
 467                 wpa_s->sme.assoc_req_ie_len += ext_capab_len;
 468                 os_memcpy(pos, ext_capab, ext_capab_len);
 469         }
 470
 471 #ifdef CONFIG_HS20
 472         if (is_hs20_network(wpa_s, ssid, bss)) {
 473                 struct wpabuf *hs20;
 474
 475                 hs20 = wpabuf_alloc(20);
 476                 if (hs20) {
 477                         int pps_mo_id = hs20_get_pps_mo_id(wpa_s, ssid);
 478                         size_t len;
 479
 480                         wpas_hs20_add_indication(hs20, pps_mo_id);
 481                         len = sizeof(wpa_s->sme.assoc_req_ie) -
 482                                 wpa_s->sme.assoc_req_ie_len;
 483                         if (wpabuf_len(hs20) <= len) {
 484                                 os_memcpy(wpa_s->sme.assoc_req_ie +
 485                                           wpa_s->sme.assoc_req_ie_len,
 486                                           wpabuf_head(hs20), wpabuf_len(hs20));
 487                                 wpa_s->sme.assoc_req_ie_len += wpabuf_len(hs20);
 488                         }
 489                         wpabuf_free(hs20);
 490                 }
 491         }
 492 #endif /* CONFIG_HS20 */
 493
 494         if (wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ]) {
 495                 struct wpabuf *buf = wpa_s->vendor_elem[VENDOR_ELEM_ASSOC_REQ];
 496                 size_t len;
 497
 498                 len = sizeof(wpa_s->sme.assoc_req_ie) -
 499                         wpa_s->sme.assoc_req_ie_len;
 500                 if (wpabuf_len(buf) <= len) {
 501                         os_memcpy(wpa_s->sme.assoc_req_ie +
 502                                   wpa_s->sme.assoc_req_ie_len,
 503                                   wpabuf_head(buf), wpabuf_len(buf));
 504                         wpa_s->sme.assoc_req_ie_len += wpabuf_len(buf);
 505                 }
 506         }
 507
 508 #ifdef CONFIG_MBO
 509         if (mbo) {
 510                 int len;
 511
 512                 len = wpas_mbo_ie(wpa_s, wpa_s->sme.assoc_req_ie +
 513                                   wpa_s->sme.assoc_req_ie_len,
 514                                   sizeof(wpa_s->sme.assoc_req_ie) -
 515                                   wpa_s->sme.assoc_req_ie_len);
 516                 if (len >= 0)
 517                         wpa_s->sme.assoc_req_ie_len += len;
 518         }
 519 #endif /* CONFIG_MBO */
 520
 521 #ifdef CONFIG_SAE
 522         if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE &&
 523             pmksa_cache_set_current(wpa_s->wpa, NULL, bss->bssid, ssid, 0) == 0)
 524         {
 525                 wpa_dbg(wpa_s, MSG_DEBUG,
 526                         "PMKSA cache entry found - try to use PMKSA caching instead of new SAE authentication");
 527                 params.auth_alg = WPA_AUTH_ALG_OPEN;
 528                 wpa_s->sme.sae_pmksa_caching = 1;
 529         }
 530
 531         if (!skip_auth && params.auth_alg == WPA_AUTH_ALG_SAE) {
 532                 if (start)
 533                         resp = sme_auth_build_sae_commit(wpa_s, ssid,
 534                                                          bss->bssid);
 535                 else
 536                         resp = sme_auth_build_sae_confirm(wpa_s);
 537                 if (resp == NULL) {
 538                         wpas_connection_failed(wpa_s, bss->bssid);
 539                         return;
 540                 }
 541                 params.sae_data = wpabuf_head(resp);
 542                 params.sae_data_len = wpabuf_len(resp);
 543                 wpa_s->sme.sae.state = start ? SAE_COMMITTED : SAE_CONFIRMED;
 544         }
 545 #endif /* CONFIG_SAE */
 546
 547         wpa_supplicant_cancel_sched_scan(wpa_s);
 548         wpa_supplicant_cancel_scan(wpa_s);
 549
 550         wpa_msg(wpa_s, MSG_INFO, "SME: Trying to authenticate with " MACSTR
 551                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 552                 wpa_ssid_txt(params.ssid, params.ssid_len), params.freq);
 553
 554         wpa_clear_keys(wpa_s, bss->bssid);
 555         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
 556         old_ssid = wpa_s->current_ssid;
 557         wpa_s->current_ssid = ssid;
 558         wpa_supplicant_rsn_supp_set_config(wpa_s, wpa_s->current_ssid);
 559         wpa_supplicant_initiate_eapol(wpa_s);
 560         if (old_ssid != wpa_s->current_ssid)
 561                 wpas_notify_network_changed(wpa_s);
 562
 563 #ifdef CONFIG_HS20
 564         hs20_configure_frame_filters(wpa_s);
 565 #endif /* CONFIG_HS20 */
 566
 567 #ifdef CONFIG_P2P
 568         /*
 569          * If multi-channel concurrency is not supported, check for any
 570          * frequency conflict. In case of any frequency conflict, remove the
 571          * least prioritized connection.
 572          */
 573         if (wpa_s->num_multichan_concurrent < 2) {
 574                 int freq, num;
 575                 num = get_shared_radio_freqs(wpa_s, &freq, 1);
 576                 if (num > 0 && freq > 0 && freq != params.freq) {
 577                         wpa_printf(MSG_DEBUG,
 578                                    "Conflicting frequency found (%d != %d)",
 579                                    freq, params.freq);
 580                         if (wpas_p2p_handle_frequency_conflicts(wpa_s,
 581                                                                 params.freq,
 582                                                                 ssid) < 0) {
 583                                 wpas_connection_failed(wpa_s, bss->bssid);
 584                                 wpa_supplicant_mark_disassoc(wpa_s);
 585                                 wpabuf_free(resp);
 586                                 wpas_connect_work_done(wpa_s);
 587                                 return;
 588                         }
 589                 }
 590         }
 591 #endif /* CONFIG_P2P */
 592
 593         if (skip_auth) {
 594                 wpa_msg(wpa_s, MSG_DEBUG,
 595                         "SME: Skip authentication step on reassoc-to-same-BSS");
 596                 wpabuf_free(resp);
 597                 sme_associate(wpa_s, ssid->mode, bss->bssid, WLAN_AUTH_OPEN);
 598                 return;
 599         }
 600
 601
 602         wpa_s->sme.auth_alg = params.auth_alg;
 603         if (wpa_drv_authenticate(wpa_s, &params) < 0) {
 604                 wpa_msg(wpa_s, MSG_INFO, "SME: Authentication request to the "
 605                         "driver failed");
 606                 wpas_connection_failed(wpa_s, bss->bssid);
 607                 wpa_supplicant_mark_disassoc(wpa_s);
 608                 wpabuf_free(resp);
 609                 wpas_connect_work_done(wpa_s);
 610                 return;
 611         }
 612
 613         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
 614                                NULL);
 615
 616         /*
 617          * Association will be started based on the authentication event from
 618          * the driver.
 619          */
 620
 621         wpabuf_free(resp);
 622 }
 623
 624
 625 static void sme_auth_start_cb(struct wpa_radio_work *work, int deinit)
 626 {
 627         struct wpa_connect_work *cwork = work->ctx;
 628         struct wpa_supplicant *wpa_s = work->wpa_s;
 629
 630         if (deinit) {
 631                 if (work->started)
 632                         wpa_s->connect_work = NULL;
 633
 634                 wpas_connect_work_free(cwork);
 635                 return;
 636         }
 637
 638         wpa_s->connect_work = work;
 639
 640         if (cwork->bss_removed ||
 641             !wpas_valid_bss_ssid(wpa_s, cwork->bss, cwork->ssid) ||
 642             wpas_network_disabled(wpa_s, cwork->ssid)) {
 643                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: BSS/SSID entry for authentication not valid anymore - drop connection attempt");
 644                 wpas_connect_work_done(wpa_s);
 645                 return;
 646         }
 647
 648         sme_send_authentication(wpa_s, cwork->bss, cwork->ssid, 1);
 649 }
 650
 651
 652 void sme_authenticate(struct wpa_supplicant *wpa_s,
 653                       struct wpa_bss *bss, struct wpa_ssid *ssid)
 654 {
 655         struct wpa_connect_work *cwork;
 656
 657         if (bss == NULL || ssid == NULL)
 658                 return;
 659         if (wpa_s->connect_work) {
 660                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reject sme_authenticate() call since connect_work exist");
 661                 return;
 662         }
 663
 664         if (radio_work_pending(wpa_s, "sme-connect")) {
 665                 /*
 666                  * The previous sme-connect work might no longer be valid due to
 667                  * the fact that the BSS list was updated. In addition, it makes
 668                  * sense to adhere to the 'newer' decision.
 669                  */
 670                 wpa_dbg(wpa_s, MSG_DEBUG,
 671                         "SME: Remove previous pending sme-connect");
 672                 radio_remove_works(wpa_s, "sme-connect", 0);
 673         }
 674
 675         wpas_abort_ongoing_scan(wpa_s);
 676
 677         cwork = os_zalloc(sizeof(*cwork));
 678         if (cwork == NULL)
 679                 return;
 680         cwork->bss = bss;
 681         cwork->ssid = ssid;
 682         cwork->sme = 1;
 683
 684 #ifdef CONFIG_SAE
 685         wpa_s->sme.sae.state = SAE_NOTHING;
 686         wpa_s->sme.sae.send_confirm = 0;
 687         wpa_s->sme.sae_group_index = 0;
 688 #endif /* CONFIG_SAE */
 689
 690         if (radio_add_work(wpa_s, bss->freq, "sme-connect", 1,
 691                            sme_auth_start_cb, cwork) < 0)
 692                 wpas_connect_work_free(cwork);
 693 }
 694
 695
 696 #ifdef CONFIG_SAE
 697
 698 static int sme_sae_auth(struct wpa_supplicant *wpa_s, u16 auth_transaction,
 699                         u16 status_code, const u8 *data, size_t len)
 700 {
 701         int *groups;
 702
 703         wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE authentication transaction %u "
 704                 "status code %u", auth_transaction, status_code);
 705
 706         if (auth_transaction == 1 &&
 707             status_code == WLAN_STATUS_ANTI_CLOGGING_TOKEN_REQ &&
 708             wpa_s->sme.sae.state == SAE_COMMITTED &&
 709             wpa_s->current_bss && wpa_s->current_ssid) {
 710                 int default_groups[] = { 19, 20, 21, 25, 26, 0 };
 711                 u16 group;
 712
 713                 groups = wpa_s->conf->sae_groups;
 714                 if (!groups || groups[0] <= 0)
 715                         groups = default_groups;
 716
 717                 if (len < sizeof(le16)) {
 718                         wpa_dbg(wpa_s, MSG_DEBUG,
 719                                 "SME: Too short SAE anti-clogging token request");
 720                         return -1;
 721                 }
 722                 group = WPA_GET_LE16(data);
 723                 wpa_dbg(wpa_s, MSG_DEBUG,
 724                         "SME: SAE anti-clogging token requested (group %u)",
 725                         group);
 726                 if (sae_group_allowed(&wpa_s->sme.sae, groups, group) !=
 727                     WLAN_STATUS_SUCCESS) {
 728                         wpa_dbg(wpa_s, MSG_ERROR,
 729                                 "SME: SAE group %u of anti-clogging request is invalid",
 730                                 group);
 731                         return -1;
 732                 }
 733                 wpabuf_free(wpa_s->sme.sae_token);
 734                 wpa_s->sme.sae_token = wpabuf_alloc_copy(data + sizeof(le16),
 735                                                          len - sizeof(le16));
 736                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 737                                         wpa_s->current_ssid, 1);
 738                 return 0;
 739         }
 740
 741         if (auth_transaction == 1 &&
 742             status_code == WLAN_STATUS_FINITE_CYCLIC_GROUP_NOT_SUPPORTED &&
 743             wpa_s->sme.sae.state == SAE_COMMITTED &&
 744             wpa_s->current_bss && wpa_s->current_ssid) {
 745                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SAE group not supported");
 746                 wpa_s->sme.sae_group_index++;
 747                 if (sme_set_sae_group(wpa_s) < 0)
 748                         return -1; /* no other groups enabled */
 749                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Try next enabled SAE group");
 750                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 751                                         wpa_s->current_ssid, 1);
 752                 return 0;
 753         }
 754
 755         if (status_code != WLAN_STATUS_SUCCESS)
 756                 return -1;
 757
 758         if (auth_transaction == 1) {
 759                 u16 res;
 760
 761                 groups = wpa_s->conf->sae_groups;
 762
 763                 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE commit");
 764                 if (wpa_s->current_bss == NULL ||
 765                     wpa_s->current_ssid == NULL)
 766                         return -1;
 767                 if (wpa_s->sme.sae.state != SAE_COMMITTED)
 768                         return -1;
 769                 if (groups && groups[0] <= 0)
 770                         groups = NULL;
 771                 res = sae_parse_commit(&wpa_s->sme.sae, data, len, NULL, NULL,
 772                                        groups);
 773                 if (res == SAE_SILENTLY_DISCARD) {
 774                         wpa_printf(MSG_DEBUG,
 775                                    "SAE: Drop commit message due to reflection attack");
 776                         return 0;
 777                 }
 778                 if (res != WLAN_STATUS_SUCCESS)
 779                         return -1;
 780
 781                 if (sae_process_commit(&wpa_s->sme.sae) < 0) {
 782                         wpa_printf(MSG_DEBUG, "SAE: Failed to process peer "
 783                                    "commit");
 784                         return -1;
 785                 }
 786
 787                 wpabuf_free(wpa_s->sme.sae_token);
 788                 wpa_s->sme.sae_token = NULL;
 789                 sme_send_authentication(wpa_s, wpa_s->current_bss,
 790                                         wpa_s->current_ssid, 0);
 791                 return 0;
 792         } else if (auth_transaction == 2) {
 793                 wpa_dbg(wpa_s, MSG_DEBUG, "SME SAE confirm");
 794                 if (wpa_s->sme.sae.state != SAE_CONFIRMED)
 795                         return -1;
 796                 if (sae_check_confirm(&wpa_s->sme.sae, data, len) < 0)
 797                         return -1;
 798                 wpa_s->sme.sae.state = SAE_ACCEPTED;
 799                 sae_clear_temp_data(&wpa_s->sme.sae);
 800                 return 1;
 801         }
 802
 803         return -1;
 804 }
 805 #endif /* CONFIG_SAE */
 806
 807
 808 void sme_event_auth(struct wpa_supplicant *wpa_s, union wpa_event_data *data)
 809 {
 810         struct wpa_ssid *ssid = wpa_s->current_ssid;
 811
 812         if (ssid == NULL) {
 813                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 814                         "when network is not selected");
 815                 return;
 816         }
 817
 818         if (wpa_s->wpa_state != WPA_AUTHENTICATING) {
 819                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication event "
 820                         "when not in authenticating state");
 821                 return;
 822         }
 823
 824         if (os_memcmp(wpa_s->pending_bssid, data->auth.peer, ETH_ALEN) != 0) {
 825                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Ignore authentication with "
 826                         "unexpected peer " MACSTR,
 827                         MAC2STR(data->auth.peer));
 828                 return;
 829         }
 830
 831         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication response: peer=" MACSTR
 832                 " auth_type=%d auth_transaction=%d status_code=%d",
 833                 MAC2STR(data->auth.peer), data->auth.auth_type,
 834                 data->auth.auth_transaction, data->auth.status_code);
 835         wpa_hexdump(MSG_MSGDUMP, "SME: Authentication response IEs",
 836                     data->auth.ies, data->auth.ies_len);
 837
 838         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
 839
 840 #ifdef CONFIG_SAE
 841         if (data->auth.auth_type == WLAN_AUTH_SAE) {
 842                 int res;
 843                 res = sme_sae_auth(wpa_s, data->auth.auth_transaction,
 844                                    data->auth.status_code, data->auth.ies,
 845                                    data->auth.ies_len);
 846                 if (res < 0) {
 847                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 848                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 849
 850                 }
 851                 if (res != 1)
 852                         return;
 853
 854                 wpa_printf(MSG_DEBUG, "SME: SAE completed - setting PMK for "
 855                            "4-way handshake");
 856                 wpa_sm_set_pmk(wpa_s->wpa, wpa_s->sme.sae.pmk, PMK_LEN,
 857                                wpa_s->sme.sae.pmkid, wpa_s->pending_bssid);
 858         }
 859 #endif /* CONFIG_SAE */
 860
 861         if (data->auth.status_code != WLAN_STATUS_SUCCESS) {
 862                 char *ie_txt = NULL;
 863
 864                 if (data->auth.ies && data->auth.ies_len) {
 865                         size_t buflen = 2 * data->auth.ies_len + 1;
 866                         ie_txt = os_malloc(buflen);
 867                         if (ie_txt) {
 868                                 wpa_snprintf_hex(ie_txt, buflen, data->auth.ies,
 869                                                  data->auth.ies_len);
 870                         }
 871                 }
 872                 wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_AUTH_REJECT MACSTR
 873                         " auth_type=%u auth_transaction=%u status_code=%u ie=%s",
 874                         MAC2STR(data->auth.peer), data->auth.auth_type,
 875                         data->auth.auth_transaction, data->auth.status_code,
 876                         ie_txt);
 877                 os_free(ie_txt);
 878
 879                 if (data->auth.status_code !=
 880                     WLAN_STATUS_NOT_SUPPORTED_AUTH_ALG ||
 881                     wpa_s->sme.auth_alg == data->auth.auth_type ||
 882                     wpa_s->current_ssid->auth_alg == WPA_AUTH_ALG_LEAP) {
 883                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 884                         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
 885                         return;
 886                 }
 887
 888                 wpas_connect_work_done(wpa_s);
 889
 890                 switch (data->auth.auth_type) {
 891                 case WLAN_AUTH_OPEN:
 892                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_SHARED;
 893
 894                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying SHARED auth");
 895                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 896                                                  wpa_s->current_ssid);
 897                         return;
 898
 899                 case WLAN_AUTH_SHARED_KEY:
 900                         wpa_s->current_ssid->auth_alg = WPA_AUTH_ALG_LEAP;
 901
 902                         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Trying LEAP auth");
 903                         wpa_supplicant_associate(wpa_s, wpa_s->current_bss,
 904                                                  wpa_s->current_ssid);
 905                         return;
 906
 907                 default:
 908                         return;
 909                 }
 910         }
 911
 912 #ifdef CONFIG_IEEE80211R
 913         if (data->auth.auth_type == WLAN_AUTH_FT) {
 914                 if (wpa_ft_process_response(wpa_s->wpa, data->auth.ies,
 915                                             data->auth.ies_len, 0,
 916                                             data->auth.peer, NULL, 0) < 0) {
 917                         wpa_dbg(wpa_s, MSG_DEBUG,
 918                                 "SME: FT Authentication response processing failed");
 919                         wpa_msg(wpa_s, MSG_INFO, WPA_EVENT_DISCONNECTED "bssid="
 920                                 MACSTR
 921                                 " reason=%d locally_generated=1",
 922                                 MAC2STR(wpa_s->pending_bssid),
 923                                 WLAN_REASON_DEAUTH_LEAVING);
 924                         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
 925                         wpa_supplicant_mark_disassoc(wpa_s);
 926                         return;
 927                 }
 928         }
 929 #endif /* CONFIG_IEEE80211R */
 930
 931         sme_associate(wpa_s, ssid->mode, data->auth.peer,
 932                       data->auth.auth_type);
 933 }
 934
 935
 936 void sme_associate(struct wpa_supplicant *wpa_s, enum wpas_mode mode,
 937                    const u8 *bssid, u16 auth_type)
 938 {
 939         struct wpa_driver_associate_params params;
 940         struct ieee802_11_elems elems;
 941 #ifdef CONFIG_HT_OVERRIDES
 942         struct ieee80211_ht_capabilities htcaps;
 943         struct ieee80211_ht_capabilities htcaps_mask;
 944 #endif /* CONFIG_HT_OVERRIDES */
 945 #ifdef CONFIG_VHT_OVERRIDES
 946         struct ieee80211_vht_capabilities vhtcaps;
 947         struct ieee80211_vht_capabilities vhtcaps_mask;
 948 #endif /* CONFIG_VHT_OVERRIDES */
 949
 950         os_memset(&params, 0, sizeof(params));
 951         params.bssid = bssid;
 952         params.ssid = wpa_s->sme.ssid;
 953         params.ssid_len = wpa_s->sme.ssid_len;
 954         params.freq.freq = wpa_s->sme.freq;
 955         params.bg_scan_period = wpa_s->current_ssid ?
 956                 wpa_s->current_ssid->bg_scan_period : -1;
 957         params.wpa_ie = wpa_s->sme.assoc_req_ie_len ?
 958                 wpa_s->sme.assoc_req_ie : NULL;
 959         params.wpa_ie_len = wpa_s->sme.assoc_req_ie_len;
 960         params.pairwise_suite = wpa_s->pairwise_cipher;
 961         params.group_suite = wpa_s->group_cipher;
 962         params.key_mgmt_suite = wpa_s->key_mgmt;
 963         params.wpa_proto = wpa_s->wpa_proto;
 964 #ifdef CONFIG_HT_OVERRIDES
 965         os_memset(&htcaps, 0, sizeof(htcaps));
 966         os_memset(&htcaps_mask, 0, sizeof(htcaps_mask));
 967         params.htcaps = (u8 *) &htcaps;
 968         params.htcaps_mask = (u8 *) &htcaps_mask;
 969         wpa_supplicant_apply_ht_overrides(wpa_s, wpa_s->current_ssid, &params);
 970 #endif /* CONFIG_HT_OVERRIDES */
 971 #ifdef CONFIG_VHT_OVERRIDES
 972         os_memset(&vhtcaps, 0, sizeof(vhtcaps));
 973         os_memset(&vhtcaps_mask, 0, sizeof(vhtcaps_mask));
 974         params.vhtcaps = &vhtcaps;
 975         params.vhtcaps_mask = &vhtcaps_mask;
 976         wpa_supplicant_apply_vht_overrides(wpa_s, wpa_s->current_ssid, &params);
 977 #endif /* CONFIG_VHT_OVERRIDES */
 978 #ifdef CONFIG_IEEE80211R
 979         if (auth_type == WLAN_AUTH_FT && wpa_s->sme.ft_ies) {
 980                 params.wpa_ie = wpa_s->sme.ft_ies;
 981                 params.wpa_ie_len = wpa_s->sme.ft_ies_len;
 982         }
 983 #endif /* CONFIG_IEEE80211R */
 984         params.mode = mode;
 985         params.mgmt_frame_protection = wpa_s->sme.mfp;
 986         params.rrm_used = wpa_s->rrm.rrm_used;
 987         if (wpa_s->sme.prev_bssid_set)
 988                 params.prev_bssid = wpa_s->sme.prev_bssid;
 989
 990         wpa_msg(wpa_s, MSG_INFO, "Trying to associate with " MACSTR
 991                 " (SSID='%s' freq=%d MHz)", MAC2STR(params.bssid),
 992                 params.ssid ? wpa_ssid_txt(params.ssid, params.ssid_len) : "",
 993                 params.freq.freq);
 994
 995         wpa_supplicant_set_state(wpa_s, WPA_ASSOCIATING);
 996
 997         if (params.wpa_ie == NULL ||
 998             ieee802_11_parse_elems(params.wpa_ie, params.wpa_ie_len, &elems, 0)
 999             < 0) {
1000                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Could not parse own IEs?!");
1001                 os_memset(&elems, 0, sizeof(elems));
1002         }
1003         if (elems.rsn_ie) {
1004                 params.wpa_proto = WPA_PROTO_RSN;
1005                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.rsn_ie - 2,
1006                                         elems.rsn_ie_len + 2);
1007         } else if (elems.wpa_ie) {
1008                 params.wpa_proto = WPA_PROTO_WPA;
1009                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.wpa_ie - 2,
1010                                         elems.wpa_ie_len + 2);
1011         } else if (elems.osen) {
1012                 params.wpa_proto = WPA_PROTO_OSEN;
1013                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, elems.osen - 2,
1014                                         elems.osen_len + 2);
1015         } else
1016                 wpa_sm_set_assoc_wpa_ie(wpa_s->wpa, NULL, 0);
1017         if (wpa_s->current_ssid && wpa_s->current_ssid->p2p_group)
1018                 params.p2p = 1;
1019
1020         if (wpa_s->p2pdev->set_sta_uapsd)
1021                 params.uapsd = wpa_s->p2pdev->sta_uapsd;
1022         else
1023                 params.uapsd = -1;
1024
1025         if (wpa_drv_associate(wpa_s, &params) < 0) {
1026                 wpa_msg(wpa_s, MSG_INFO, "SME: Association request to the "
1027                         "driver failed");
1028                 wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1029                 wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1030                 os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1031                 return;
1032         }
1033
1034         eloop_register_timeout(SME_ASSOC_TIMEOUT, 0, sme_assoc_timer, wpa_s,
1035                                NULL);
1036 }
1037
1038
1039 int sme_update_ft_ies(struct wpa_supplicant *wpa_s, const u8 *md,
1040                       const u8 *ies, size_t ies_len)
1041 {
1042         if (md == NULL || ies == NULL) {
1043                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Remove mobility domain");
1044                 os_free(wpa_s->sme.ft_ies);
1045                 wpa_s->sme.ft_ies = NULL;
1046                 wpa_s->sme.ft_ies_len = 0;
1047                 wpa_s->sme.ft_used = 0;
1048                 return 0;
1049         }
1050
1051         os_memcpy(wpa_s->sme.mobility_domain, md, MOBILITY_DOMAIN_ID_LEN);
1052         wpa_hexdump(MSG_DEBUG, "SME: FT IEs", ies, ies_len);
1053         os_free(wpa_s->sme.ft_ies);
1054         wpa_s->sme.ft_ies = os_malloc(ies_len);
1055         if (wpa_s->sme.ft_ies == NULL)
1056                 return -1;
1057         os_memcpy(wpa_s->sme.ft_ies, ies, ies_len);
1058         wpa_s->sme.ft_ies_len = ies_len;
1059         return 0;
1060 }
1061
1062
1063 static void sme_deauth(struct wpa_supplicant *wpa_s)
1064 {
1065         int bssid_changed;
1066
1067         bssid_changed = !is_zero_ether_addr(wpa_s->bssid);
1068
1069         if (wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1070                                    WLAN_REASON_DEAUTH_LEAVING) < 0) {
1071                 wpa_msg(wpa_s, MSG_INFO, "SME: Deauth request to the driver "
1072                         "failed");
1073         }
1074         wpa_s->sme.prev_bssid_set = 0;
1075
1076         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1077         wpa_supplicant_set_state(wpa_s, WPA_DISCONNECTED);
1078         os_memset(wpa_s->bssid, 0, ETH_ALEN);
1079         os_memset(wpa_s->pending_bssid, 0, ETH_ALEN);
1080         if (bssid_changed)
1081                 wpas_notify_bssid_changed(wpa_s);
1082 }
1083
1084
1085 void sme_event_assoc_reject(struct wpa_supplicant *wpa_s,
1086                             union wpa_event_data *data)
1087 {
1088         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association with " MACSTR " failed: "
1089                 "status code %d", MAC2STR(wpa_s->pending_bssid),
1090                 data->assoc_reject.status_code);
1091
1092         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1093
1094 #ifdef CONFIG_SAE
1095         if (wpa_s->sme.sae_pmksa_caching && wpa_s->current_ssid &&
1096             wpa_key_mgmt_sae(wpa_s->current_ssid->key_mgmt)) {
1097                 wpa_dbg(wpa_s, MSG_DEBUG,
1098                         "PMKSA caching attempt rejected - drop PMKSA cache entry and fall back to SAE authentication");
1099                 wpa_sm_aborted_cached(wpa_s->wpa);
1100                 wpa_sm_pmksa_cache_flush(wpa_s->wpa, wpa_s->current_ssid);
1101                 if (wpa_s->current_bss) {
1102                         struct wpa_bss *bss = wpa_s->current_bss;
1103                         struct wpa_ssid *ssid = wpa_s->current_ssid;
1104
1105                         wpa_drv_deauthenticate(wpa_s, wpa_s->pending_bssid,
1106                                                WLAN_REASON_DEAUTH_LEAVING);
1107                         wpas_connect_work_done(wpa_s);
1108                         wpa_supplicant_mark_disassoc(wpa_s);
1109                         wpa_supplicant_connect(wpa_s, bss, ssid);
1110                         return;
1111                 }
1112         }
1113 #endif /* CONFIG_SAE */
1114
1115         /*
1116          * For now, unconditionally terminate the previous authentication. In
1117          * theory, this should not be needed, but mac80211 gets quite confused
1118          * if the authentication is left pending.. Some roaming cases might
1119          * benefit from using the previous authentication, so this could be
1120          * optimized in the future.
1121          */
1122         sme_deauth(wpa_s);
1123 }
1124
1125
1126 void sme_event_auth_timed_out(struct wpa_supplicant *wpa_s,
1127                               union wpa_event_data *data)
1128 {
1129         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Authentication timed out");
1130         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1131         wpa_supplicant_mark_disassoc(wpa_s);
1132 }
1133
1134
1135 void sme_event_assoc_timed_out(struct wpa_supplicant *wpa_s,
1136                                union wpa_event_data *data)
1137 {
1138         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association timed out");
1139         wpas_connection_failed(wpa_s, wpa_s->pending_bssid);
1140         wpa_supplicant_mark_disassoc(wpa_s);
1141 }
1142
1143
1144 void sme_event_disassoc(struct wpa_supplicant *wpa_s,
1145                         struct disassoc_info *info)
1146 {
1147         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Disassociation event received");
1148         if (wpa_s->sme.prev_bssid_set) {
1149                 /*
1150                  * cfg80211/mac80211 can get into somewhat confused state if
1151                  * the AP only disassociates us and leaves us in authenticated
1152                  * state. For now, force the state to be cleared to avoid
1153                  * confusing errors if we try to associate with the AP again.
1154                  */
1155                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: Deauthenticate to clear "
1156                         "driver state");
1157                 wpa_drv_deauthenticate(wpa_s, wpa_s->sme.prev_bssid,
1158                                        WLAN_REASON_DEAUTH_LEAVING);
1159         }
1160 }
1161
1162
1163 static void sme_auth_timer(void *eloop_ctx, void *timeout_ctx)
1164 {
1165         struct wpa_supplicant *wpa_s = eloop_ctx;
1166         if (wpa_s->wpa_state == WPA_AUTHENTICATING) {
1167                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Authentication timeout");
1168                 sme_deauth(wpa_s);
1169         }
1170 }
1171
1172
1173 static void sme_assoc_timer(void *eloop_ctx, void *timeout_ctx)
1174 {
1175         struct wpa_supplicant *wpa_s = eloop_ctx;
1176         if (wpa_s->wpa_state == WPA_ASSOCIATING) {
1177                 wpa_msg(wpa_s, MSG_DEBUG, "SME: Association timeout");
1178                 sme_deauth(wpa_s);
1179         }
1180 }
1181
1182
1183 void sme_state_changed(struct wpa_supplicant *wpa_s)
1184 {
1185         /* Make sure timers are cleaned up appropriately. */
1186         if (wpa_s->wpa_state != WPA_ASSOCIATING)
1187                 eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1188         if (wpa_s->wpa_state != WPA_AUTHENTICATING)
1189                 eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1190 }
1191
1192
1193 void sme_disassoc_while_authenticating(struct wpa_supplicant *wpa_s,
1194                                        const u8 *prev_pending_bssid)
1195 {
1196         /*
1197          * mac80211-workaround to force deauth on failed auth cmd,
1198          * requires us to remain in authenticating state to allow the
1199          * second authentication attempt to be continued properly.
1200          */
1201         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Allow pending authentication "
1202                 "to proceed after disconnection event");
1203         wpa_supplicant_set_state(wpa_s, WPA_AUTHENTICATING);
1204         os_memcpy(wpa_s->pending_bssid, prev_pending_bssid, ETH_ALEN);
1205
1206         /*
1207          * Re-arm authentication timer in case auth fails for whatever reason.
1208          */
1209         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1210         eloop_register_timeout(SME_AUTH_TIMEOUT, 0, sme_auth_timer, wpa_s,
1211                                NULL);
1212 }
1213
1214
1215 void sme_clear_on_disassoc(struct wpa_supplicant *wpa_s)
1216 {
1217         wpa_s->sme.prev_bssid_set = 0;
1218 #ifdef CONFIG_SAE
1219         wpabuf_free(wpa_s->sme.sae_token);
1220         wpa_s->sme.sae_token = NULL;
1221         sae_clear_data(&wpa_s->sme.sae);
1222 #endif /* CONFIG_SAE */
1223 #ifdef CONFIG_IEEE80211R
1224         if (wpa_s->sme.ft_ies)
1225                 sme_update_ft_ies(wpa_s, NULL, NULL, 0);
1226 #endif /* CONFIG_IEEE80211R */
1227 }
1228
1229
1230 void sme_deinit(struct wpa_supplicant *wpa_s)
1231 {
1232         os_free(wpa_s->sme.ft_ies);
1233         wpa_s->sme.ft_ies = NULL;
1234         wpa_s->sme.ft_ies_len = 0;
1235 #ifdef CONFIG_IEEE80211W
1236         sme_stop_sa_query(wpa_s);
1237 #endif /* CONFIG_IEEE80211W */
1238         sme_clear_on_disassoc(wpa_s);
1239
1240         eloop_cancel_timeout(sme_assoc_timer, wpa_s, NULL);
1241         eloop_cancel_timeout(sme_auth_timer, wpa_s, NULL);
1242         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1243 }
1244
1245
1246 static void sme_send_2040_bss_coex(struct wpa_supplicant *wpa_s,
1247                                    const u8 *chan_list, u8 num_channels,
1248                                    u8 num_intol)
1249 {
1250         struct ieee80211_2040_bss_coex_ie *bc_ie;
1251         struct ieee80211_2040_intol_chan_report *ic_report;
1252         struct wpabuf *buf;
1253
1254         wpa_printf(MSG_DEBUG, "SME: Send 20/40 BSS Coexistence to " MACSTR
1255                    " (num_channels=%u num_intol=%u)",
1256                    MAC2STR(wpa_s->bssid), num_channels, num_intol);
1257         wpa_hexdump(MSG_DEBUG, "SME: 20/40 BSS Intolerant Channels",
1258                     chan_list, num_channels);
1259
1260         buf = wpabuf_alloc(2 + /* action.category + action_code */
1261                            sizeof(struct ieee80211_2040_bss_coex_ie) +
1262                            sizeof(struct ieee80211_2040_intol_chan_report) +
1263                            num_channels);
1264         if (buf == NULL)
1265                 return;
1266
1267         wpabuf_put_u8(buf, WLAN_ACTION_PUBLIC);
1268         wpabuf_put_u8(buf, WLAN_PA_20_40_BSS_COEX);
1269
1270         bc_ie = wpabuf_put(buf, sizeof(*bc_ie));
1271         bc_ie->element_id = WLAN_EID_20_40_BSS_COEXISTENCE;
1272         bc_ie->length = 1;
1273         if (num_intol)
1274                 bc_ie->coex_param |= WLAN_20_40_BSS_COEX_20MHZ_WIDTH_REQ;
1275
1276         if (num_channels > 0) {
1277                 ic_report = wpabuf_put(buf, sizeof(*ic_report));
1278                 ic_report->element_id = WLAN_EID_20_40_BSS_INTOLERANT;
1279                 ic_report->length = num_channels + 1;
1280                 ic_report->op_class = 0;
1281                 os_memcpy(wpabuf_put(buf, num_channels), chan_list,
1282                           num_channels);
1283         }
1284
1285         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1286                                 wpa_s->own_addr, wpa_s->bssid,
1287                                 wpabuf_head(buf), wpabuf_len(buf), 0) < 0) {
1288                 wpa_msg(wpa_s, MSG_INFO,
1289                         "SME: Failed to send 20/40 BSS Coexistence frame");
1290         }
1291
1292         wpabuf_free(buf);
1293 }
1294
1295
1296 int sme_proc_obss_scan(struct wpa_supplicant *wpa_s)
1297 {
1298         struct wpa_bss *bss;
1299         const u8 *ie;
1300         u16 ht_cap;
1301         u8 chan_list[P2P_MAX_CHANNELS], channel;
1302         u8 num_channels = 0, num_intol = 0, i;
1303
1304         if (!wpa_s->sme.sched_obss_scan)
1305                 return 0;
1306
1307         wpa_s->sme.sched_obss_scan = 0;
1308         if (!wpa_s->current_bss || wpa_s->wpa_state != WPA_COMPLETED)
1309                 return 1;
1310
1311         /*
1312          * Check whether AP uses regulatory triplet or channel triplet in
1313          * country info. Right now the operating class of the BSS channel
1314          * width trigger event is "unknown" (IEEE Std 802.11-2012 10.15.12),
1315          * based on the assumption that operating class triplet is not used in
1316          * beacon frame. If the First Channel Number/Operating Extension
1317          * Identifier octet has a positive integer value of 201 or greater,
1318          * then its operating class triplet.
1319          *
1320          * TODO: If Supported Operating Classes element is present in beacon
1321          * frame, have to lookup operating class in Annex E and fill them in
1322          * 2040 coex frame.
1323          */
1324         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_COUNTRY);
1325         if (ie && (ie[1] >= 6) && (ie[5] >= 201))
1326                 return 1;
1327
1328         os_memset(chan_list, 0, sizeof(chan_list));
1329
1330         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
1331                 /* Skip other band bss */
1332                 enum hostapd_hw_mode mode;
1333                 mode = ieee80211_freq_to_chan(bss->freq, &channel);
1334                 if (mode != HOSTAPD_MODE_IEEE80211G &&
1335                     mode != HOSTAPD_MODE_IEEE80211B)
1336                         continue;
1337
1338                 ie = wpa_bss_get_ie(bss, WLAN_EID_HT_CAP);
1339                 ht_cap = (ie && (ie[1] == 26)) ? WPA_GET_LE16(ie + 2) : 0;
1340                 wpa_printf(MSG_DEBUG, "SME OBSS scan BSS " MACSTR
1341                            " freq=%u chan=%u ht_cap=0x%x",
1342                            MAC2STR(bss->bssid), bss->freq, channel, ht_cap);
1343
1344                 if (!ht_cap || (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)) {
1345                         if (ht_cap & HT_CAP_INFO_40MHZ_INTOLERANT)
1346                                 num_intol++;
1347
1348                         /* Check whether the channel is already considered */
1349                         for (i = 0; i < num_channels; i++) {
1350                                 if (channel == chan_list[i])
1351                                         break;
1352                         }
1353                         if (i != num_channels)
1354                                 continue;
1355
1356                         chan_list[num_channels++] = channel;
1357                 }
1358         }
1359
1360         sme_send_2040_bss_coex(wpa_s, chan_list, num_channels, num_intol);
1361         return 1;
1362 }
1363
1364
1365 static void wpa_obss_scan_freqs_list(struct wpa_supplicant *wpa_s,
1366                                      struct wpa_driver_scan_params *params)
1367 {
1368         /* Include only affected channels */
1369         struct hostapd_hw_modes *mode;
1370         int count, i;
1371         int start, end;
1372
1373         mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes,
1374                         HOSTAPD_MODE_IEEE80211G);
1375         if (mode == NULL) {
1376                 /* No channels supported in this band - use empty list */
1377                 params->freqs = os_zalloc(sizeof(int));
1378                 return;
1379         }
1380
1381         if (wpa_s->sme.ht_sec_chan == HT_SEC_CHAN_UNKNOWN &&
1382             wpa_s->current_bss) {
1383                 const u8 *ie;
1384
1385                 ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_OPERATION);
1386                 if (ie && ie[1] >= 2) {
1387                         u8 o;
1388
1389                         o = ie[3] & HT_INFO_HT_PARAM_SECONDARY_CHNL_OFF_MASK;
1390                         if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_ABOVE)
1391                                 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_ABOVE;
1392                         else if (o == HT_INFO_HT_PARAM_SECONDARY_CHNL_BELOW)
1393                                 wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_BELOW;
1394                 }
1395         }
1396
1397         start = wpa_s->assoc_freq - 10;
1398         end = wpa_s->assoc_freq + 10;
1399         switch (wpa_s->sme.ht_sec_chan) {
1400         case HT_SEC_CHAN_UNKNOWN:
1401                 /* HT40+ possible on channels 1..9 */
1402                 if (wpa_s->assoc_freq <= 2452)
1403                         start -= 20;
1404                 /* HT40- possible on channels 5-13 */
1405                 if (wpa_s->assoc_freq >= 2432)
1406                         end += 20;
1407                 break;
1408         case HT_SEC_CHAN_ABOVE:
1409                 end += 20;
1410                 break;
1411         case HT_SEC_CHAN_BELOW:
1412                 start -= 20;
1413                 break;
1414         }
1415         wpa_printf(MSG_DEBUG,
1416                    "OBSS: assoc_freq %d possible affected range %d-%d",
1417                    wpa_s->assoc_freq, start, end);
1418
1419         params->freqs = os_calloc(mode->num_channels + 1, sizeof(int));
1420         if (params->freqs == NULL)
1421                 return;
1422         for (count = 0, i = 0; i < mode->num_channels; i++) {
1423                 int freq;
1424
1425                 if (mode->channels[i].flag & HOSTAPD_CHAN_DISABLED)
1426                         continue;
1427                 freq = mode->channels[i].freq;
1428                 if (freq - 10 >= end || freq + 10 <= start)
1429                         continue; /* not affected */
1430                 params->freqs[count++] = freq;
1431         }
1432 }
1433
1434
1435 static void sme_obss_scan_timeout(void *eloop_ctx, void *timeout_ctx)
1436 {
1437         struct wpa_supplicant *wpa_s = eloop_ctx;
1438         struct wpa_driver_scan_params params;
1439
1440         if (!wpa_s->current_bss) {
1441                 wpa_printf(MSG_DEBUG, "SME OBSS: Ignore scan request");
1442                 return;
1443         }
1444
1445         os_memset(&params, 0, sizeof(params));
1446         wpa_obss_scan_freqs_list(wpa_s, &params);
1447         params.low_priority = 1;
1448         wpa_printf(MSG_DEBUG, "SME OBSS: Request an OBSS scan");
1449
1450         if (wpa_supplicant_trigger_scan(wpa_s, &params))
1451                 wpa_printf(MSG_DEBUG, "SME OBSS: Failed to trigger scan");
1452         else
1453                 wpa_s->sme.sched_obss_scan = 1;
1454         os_free(params.freqs);
1455
1456         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1457                                sme_obss_scan_timeout, wpa_s, NULL);
1458 }
1459
1460
1461 void sme_sched_obss_scan(struct wpa_supplicant *wpa_s, int enable)
1462 {
1463         const u8 *ie;
1464         struct wpa_bss *bss = wpa_s->current_bss;
1465         struct wpa_ssid *ssid = wpa_s->current_ssid;
1466         struct hostapd_hw_modes *hw_mode = NULL;
1467         int i;
1468
1469         eloop_cancel_timeout(sme_obss_scan_timeout, wpa_s, NULL);
1470         wpa_s->sme.sched_obss_scan = 0;
1471         wpa_s->sme.ht_sec_chan = HT_SEC_CHAN_UNKNOWN;
1472         if (!enable)
1473                 return;
1474
1475         /*
1476          * Schedule OBSS scan if driver is using station SME in wpa_supplicant
1477          * or it expects OBSS scan to be performed by wpa_supplicant.
1478          */
1479         if (!((wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME) ||
1480               (wpa_s->drv_flags & WPA_DRIVER_FLAGS_OBSS_SCAN)) ||
1481             ssid == NULL || ssid->mode != IEEE80211_MODE_INFRA)
1482                 return;
1483
1484         if (!wpa_s->hw.modes)
1485                 return;
1486
1487         /* only HT caps in 11g mode are relevant */
1488         for (i = 0; i < wpa_s->hw.num_modes; i++) {
1489                 hw_mode = &wpa_s->hw.modes[i];
1490                 if (hw_mode->mode == HOSTAPD_MODE_IEEE80211G)
1491                         break;
1492         }
1493
1494         /* Driver does not support HT40 for 11g or doesn't have 11g. */
1495         if (i == wpa_s->hw.num_modes || !hw_mode ||
1496             !(hw_mode->ht_capab & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1497                 return;
1498
1499         if (bss == NULL || bss->freq < 2400 || bss->freq > 2500)
1500                 return; /* Not associated on 2.4 GHz band */
1501
1502         /* Check whether AP supports HT40 */
1503         ie = wpa_bss_get_ie(wpa_s->current_bss, WLAN_EID_HT_CAP);
1504         if (!ie || ie[1] < 2 ||
1505             !(WPA_GET_LE16(ie + 2) & HT_CAP_INFO_SUPP_CHANNEL_WIDTH_SET))
1506                 return; /* AP does not support HT40 */
1507
1508         ie = wpa_bss_get_ie(wpa_s->current_bss,
1509                             WLAN_EID_OVERLAPPING_BSS_SCAN_PARAMS);
1510         if (!ie || ie[1] < 14)
1511                 return; /* AP does not request OBSS scans */
1512
1513         wpa_s->sme.obss_scan_int = WPA_GET_LE16(ie + 6);
1514         if (wpa_s->sme.obss_scan_int < 10) {
1515                 wpa_printf(MSG_DEBUG, "SME: Invalid OBSS Scan Interval %u "
1516                            "replaced with the minimum 10 sec",
1517                            wpa_s->sme.obss_scan_int);
1518                 wpa_s->sme.obss_scan_int = 10;
1519         }
1520         wpa_printf(MSG_DEBUG, "SME: OBSS Scan Interval %u sec",
1521                    wpa_s->sme.obss_scan_int);
1522         eloop_register_timeout(wpa_s->sme.obss_scan_int, 0,
1523                                sme_obss_scan_timeout, wpa_s, NULL);
1524 }
1525
1526
1527 #ifdef CONFIG_IEEE80211W
1528
1529 static const unsigned int sa_query_max_timeout = 1000;
1530 static const unsigned int sa_query_retry_timeout = 201;
1531
1532 static int sme_check_sa_query_timeout(struct wpa_supplicant *wpa_s)
1533 {
1534         u32 tu;
1535         struct os_reltime now, passed;
1536         os_get_reltime(&now);
1537         os_reltime_sub(&now, &wpa_s->sme.sa_query_start, &passed);
1538         tu = (passed.sec * 1000000 + passed.usec) / 1024;
1539         if (sa_query_max_timeout < tu) {
1540                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: SA Query timed out");
1541                 sme_stop_sa_query(wpa_s);
1542                 wpa_supplicant_deauthenticate(
1543                         wpa_s, WLAN_REASON_PREV_AUTH_NOT_VALID);
1544                 return 1;
1545         }
1546
1547         return 0;
1548 }
1549
1550
1551 static void sme_send_sa_query_req(struct wpa_supplicant *wpa_s,
1552                                   const u8 *trans_id)
1553 {
1554         u8 req[2 + WLAN_SA_QUERY_TR_ID_LEN];
1555         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Sending SA Query Request to "
1556                 MACSTR, MAC2STR(wpa_s->bssid));
1557         wpa_hexdump(MSG_DEBUG, "SME: SA Query Transaction ID",
1558                     trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1559         req[0] = WLAN_ACTION_SA_QUERY;
1560         req[1] = WLAN_SA_QUERY_REQUEST;
1561         os_memcpy(req + 2, trans_id, WLAN_SA_QUERY_TR_ID_LEN);
1562         if (wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0, wpa_s->bssid,
1563                                 wpa_s->own_addr, wpa_s->bssid,
1564                                 req, sizeof(req), 0) < 0)
1565                 wpa_msg(wpa_s, MSG_INFO, "SME: Failed to send SA Query "
1566                         "Request");
1567 }
1568
1569
1570 static void sme_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
1571 {
1572         struct wpa_supplicant *wpa_s = eloop_ctx;
1573         unsigned int timeout, sec, usec;
1574         u8 *trans_id, *nbuf;
1575
1576         if (wpa_s->sme.sa_query_count > 0 &&
1577             sme_check_sa_query_timeout(wpa_s))
1578                 return;
1579
1580         nbuf = os_realloc_array(wpa_s->sme.sa_query_trans_id,
1581                                 wpa_s->sme.sa_query_count + 1,
1582                                 WLAN_SA_QUERY_TR_ID_LEN);
1583         if (nbuf == NULL)
1584                 return;
1585         if (wpa_s->sme.sa_query_count == 0) {
1586                 /* Starting a new SA Query procedure */
1587                 os_get_reltime(&wpa_s->sme.sa_query_start);
1588         }
1589         trans_id = nbuf + wpa_s->sme.sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
1590         wpa_s->sme.sa_query_trans_id = nbuf;
1591         wpa_s->sme.sa_query_count++;
1592
1593         if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
1594                 wpa_printf(MSG_DEBUG, "Could not generate SA Query ID");
1595                 return;
1596         }
1597
1598         timeout = sa_query_retry_timeout;
1599         sec = ((timeout / 1000) * 1024) / 1000;
1600         usec = (timeout % 1000) * 1024;
1601         eloop_register_timeout(sec, usec, sme_sa_query_timer, wpa_s, NULL);
1602
1603         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Association SA Query attempt %d",
1604                 wpa_s->sme.sa_query_count);
1605
1606         sme_send_sa_query_req(wpa_s, trans_id);
1607 }
1608
1609
1610 static void sme_start_sa_query(struct wpa_supplicant *wpa_s)
1611 {
1612         sme_sa_query_timer(wpa_s, NULL);
1613 }
1614
1615
1616 static void sme_stop_sa_query(struct wpa_supplicant *wpa_s)
1617 {
1618         eloop_cancel_timeout(sme_sa_query_timer, wpa_s, NULL);
1619         os_free(wpa_s->sme.sa_query_trans_id);
1620         wpa_s->sme.sa_query_trans_id = NULL;
1621         wpa_s->sme.sa_query_count = 0;
1622 }
1623
1624
1625 void sme_event_unprot_disconnect(struct wpa_supplicant *wpa_s, const u8 *sa,
1626                                  const u8 *da, u16 reason_code)
1627 {
1628         struct wpa_ssid *ssid;
1629         struct os_reltime now;
1630
1631         if (wpa_s->wpa_state != WPA_COMPLETED)
1632                 return;
1633         ssid = wpa_s->current_ssid;
1634         if (wpas_get_ssid_pmf(wpa_s, ssid) == NO_MGMT_FRAME_PROTECTION)
1635                 return;
1636         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1637                 return;
1638         if (reason_code != WLAN_REASON_CLASS2_FRAME_FROM_NONAUTH_STA &&
1639             reason_code != WLAN_REASON_CLASS3_FRAME_FROM_NONASSOC_STA)
1640                 return;
1641         if (wpa_s->sme.sa_query_count > 0)
1642                 return;
1643
1644         os_get_reltime(&now);
1645         if (wpa_s->sme.last_unprot_disconnect.sec &&
1646             !os_reltime_expired(&now, &wpa_s->sme.last_unprot_disconnect, 10))
1647                 return; /* limit SA Query procedure frequency */
1648         wpa_s->sme.last_unprot_disconnect = now;
1649
1650         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Unprotected disconnect dropped - "
1651                 "possible AP/STA state mismatch - trigger SA Query");
1652         sme_start_sa_query(wpa_s);
1653 }
1654
1655
1656 void sme_sa_query_rx(struct wpa_supplicant *wpa_s, const u8 *sa,
1657                      const u8 *data, size_t len)
1658 {
1659         int i;
1660
1661         if (wpa_s->sme.sa_query_trans_id == NULL ||
1662             len < 1 + WLAN_SA_QUERY_TR_ID_LEN ||
1663             data[0] != WLAN_SA_QUERY_RESPONSE)
1664                 return;
1665         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Received SA Query response from "
1666                 MACSTR " (trans_id %02x%02x)", MAC2STR(sa), data[1], data[2]);
1667
1668         if (os_memcmp(sa, wpa_s->bssid, ETH_ALEN) != 0)
1669                 return;
1670
1671         for (i = 0; i < wpa_s->sme.sa_query_count; i++) {
1672                 if (os_memcmp(wpa_s->sme.sa_query_trans_id +
1673                               i * WLAN_SA_QUERY_TR_ID_LEN,
1674                               data + 1, WLAN_SA_QUERY_TR_ID_LEN) == 0)
1675                         break;
1676         }
1677
1678         if (i >= wpa_s->sme.sa_query_count) {
1679                 wpa_dbg(wpa_s, MSG_DEBUG, "SME: No matching SA Query "
1680                         "transaction identifier found");
1681                 return;
1682         }
1683
1684         wpa_dbg(wpa_s, MSG_DEBUG, "SME: Reply to pending SA Query received "
1685                 "from " MACSTR, MAC2STR(sa));
1686         sme_stop_sa_query(wpa_s);
1687 }
1688
1689 #endif /* CONFIG_IEEE80211W */