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