vcs.maemo.org Git - wpasupplicant/blob - hostapd/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2008, Jouni Malinen <j@w1.fi>
   4  * Copyright (c) 2007-2008, Intel Corporation
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  *
  10  * Alternatively, this software may be distributed under the terms of BSD
  11  * license.
  12  *
  13  * See README and COPYING for more details.
  14  */
  15
  16 #include "includes.h"
  17
  18 #include "hostapd.h"
  19 #include "sta_info.h"
  20 #include "eloop.h"
  21 #include "accounting.h"
  22 #include "ieee802_1x.h"
  23 #include "ieee802_11.h"
  24 #include "radius/radius.h"
  25 #include "wpa.h"
  26 #include "preauth.h"
  27 #include "radius/radius_client.h"
  28 #include "driver_i.h"
  29 #include "beacon.h"
  30 #include "hw_features.h"
  31 #include "mlme.h"
  32 #include "vlan_init.h"
  33
  34 static int ap_sta_in_other_bss(struct hostapd_data *hapd,
  35                                struct sta_info *sta, u32 flags);
  36 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  37 #ifdef CONFIG_IEEE80211W
  38 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  39 #endif /* CONFIG_IEEE80211W */
  40
  41 int ap_for_each_sta(struct hostapd_data *hapd,
  42                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  43                               void *ctx),
  44                     void *ctx)
  45 {
  46         struct sta_info *sta;
  47
  48         for (sta = hapd->sta_list; sta; sta = sta->next) {
  49                 if (cb(hapd, sta, ctx))
  50                         return 1;
  51         }
  52
  53         return 0;
  54 }
  55
  56
  57 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  58 {
  59         struct sta_info *s;
  60
  61         s = hapd->sta_hash[STA_HASH(sta)];
  62         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  63                 s = s->hnext;
  64         return s;
  65 }
  66
  67
  68 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  69 {
  70         struct sta_info *tmp;
  71
  72         if (hapd->sta_list == sta) {
  73                 hapd->sta_list = sta->next;
  74                 return;
  75         }
  76
  77         tmp = hapd->sta_list;
  78         while (tmp != NULL && tmp->next != sta)
  79                 tmp = tmp->next;
  80         if (tmp == NULL) {
  81                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  82                            "list.", MAC2STR(sta->addr));
  83         } else
  84                 tmp->next = sta->next;
  85 }
  86
  87
  88 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  89 {
  90         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  91         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  92 }
  93
  94
  95 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
  96 {
  97         struct sta_info *s;
  98
  99         s = hapd->sta_hash[STA_HASH(sta->addr)];
 100         if (s == NULL) return;
 101         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 102                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 103                 return;
 104         }
 105
 106         while (s->hnext != NULL &&
 107                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 108                 s = s->hnext;
 109         if (s->hnext != NULL)
 110                 s->hnext = s->hnext->hnext;
 111         else
 112                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 113                            " from hash table", MAC2STR(sta->addr));
 114 }
 115
 116
 117 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 118 {
 119         int set_beacon = 0;
 120
 121         accounting_sta_stop(hapd, sta);
 122
 123         if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC) &&
 124             !(sta->flags & WLAN_STA_PREAUTH))
 125                 hostapd_sta_remove(hapd, sta->addr);
 126
 127         ap_sta_hash_del(hapd, sta);
 128         ap_sta_list_del(hapd, sta);
 129
 130         if (sta->aid > 0)
 131                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 132                         ~BIT((sta->aid - 1) % 32);
 133
 134         hapd->num_sta--;
 135         if (sta->nonerp_set) {
 136                 sta->nonerp_set = 0;
 137                 hapd->iface->num_sta_non_erp--;
 138                 if (hapd->iface->num_sta_non_erp == 0)
 139                         set_beacon++;
 140         }
 141
 142         if (sta->no_short_slot_time_set) {
 143                 sta->no_short_slot_time_set = 0;
 144                 hapd->iface->num_sta_no_short_slot_time--;
 145                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 146                     && hapd->iface->num_sta_no_short_slot_time == 0)
 147                         set_beacon++;
 148         }
 149
 150         if (sta->no_short_preamble_set) {
 151                 sta->no_short_preamble_set = 0;
 152                 hapd->iface->num_sta_no_short_preamble--;
 153                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 154                     && hapd->iface->num_sta_no_short_preamble == 0)
 155                         set_beacon++;
 156         }
 157
 158 #ifdef CONFIG_IEEE80211N
 159         if (sta->no_ht_gf_set) {
 160                 sta->no_ht_gf_set = 0;
 161                 hapd->iface->num_sta_ht_no_gf--;
 162         }
 163
 164         if (sta->no_ht_set) {
 165                 sta->no_ht_set = 0;
 166                 hapd->iface->num_sta_no_ht--;
 167         }
 168
 169         if (sta->ht_20mhz_set) {
 170                 sta->ht_20mhz_set = 0;
 171                 hapd->iface->num_sta_ht_20mhz--;
 172         }
 173
 174 #ifdef NEED_MLME
 175         if (hostapd_ht_operation_update(hapd->iface) > 0)
 176                 set_beacon++;
 177 #endif /* NEED_MLME */
 178 #endif /* CONFIG_IEEE80211N */
 179
 180         if (set_beacon)
 181                 ieee802_11_set_beacons(hapd->iface);
 182
 183         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 184         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 185
 186         ieee802_1x_free_station(sta);
 187         wpa_auth_sta_deinit(sta->wpa_sm);
 188         rsn_preauth_free_station(hapd, sta);
 189         radius_client_flush_auth(hapd->radius, sta->addr);
 190
 191         os_free(sta->last_assoc_req);
 192         os_free(sta->challenge);
 193
 194 #ifdef CONFIG_IEEE80211W
 195         os_free(sta->sa_query_trans_id);
 196         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 197 #endif /* CONFIG_IEEE80211W */
 198
 199         wpabuf_free(sta->wps_ie);
 200
 201         os_free(sta);
 202 }
 203
 204
 205 void hostapd_free_stas(struct hostapd_data *hapd)
 206 {
 207         struct sta_info *sta, *prev;
 208
 209         sta = hapd->sta_list;
 210
 211         while (sta) {
 212                 prev = sta;
 213                 if (sta->flags & WLAN_STA_AUTH) {
 214                         mlme_deauthenticate_indication(
 215                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 216                 }
 217                 sta = sta->next;
 218                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 219                            MAC2STR(prev->addr));
 220                 ap_free_sta(hapd, prev);
 221         }
 222 }
 223
 224
 225 /**
 226  * ap_handle_timer - Per STA timer handler
 227  * @eloop_ctx: struct hostapd_data *
 228  * @timeout_ctx: struct sta_info *
 229  *
 230  * This function is called to check station activity and to remove inactive
 231  * stations.
 232  */
 233 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 234 {
 235         struct hostapd_data *hapd = eloop_ctx;
 236         struct sta_info *sta = timeout_ctx;
 237         unsigned long next_time = 0;
 238
 239         if (sta->timeout_next == STA_REMOVE) {
 240                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 241                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 242                                "local deauth request");
 243                 ap_free_sta(hapd, sta);
 244                 return;
 245         }
 246
 247         if ((sta->flags & WLAN_STA_ASSOC) &&
 248             (sta->timeout_next == STA_NULLFUNC ||
 249              sta->timeout_next == STA_DISASSOC)) {
 250                 int inactive_sec;
 251                 wpa_printf(MSG_DEBUG, "Checking STA " MACSTR " inactivity:",
 252                            MAC2STR(sta->addr));
 253                 inactive_sec = hostapd_get_inact_sec(hapd, sta->addr);
 254                 if (inactive_sec == -1) {
 255                         wpa_printf(MSG_DEBUG, "Could not get station info "
 256                                    "from kernel driver for " MACSTR ".",
 257                                    MAC2STR(sta->addr));
 258                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 259                            sta->flags & WLAN_STA_ASSOC) {
 260                         /* station activity detected; reset timeout state */
 261                         wpa_printf(MSG_DEBUG, "  Station has been active");
 262                         sta->timeout_next = STA_NULLFUNC;
 263                         next_time = hapd->conf->ap_max_inactivity -
 264                                 inactive_sec;
 265                 }
 266         }
 267
 268         if ((sta->flags & WLAN_STA_ASSOC) &&
 269             sta->timeout_next == STA_DISASSOC &&
 270             !(sta->flags & WLAN_STA_PENDING_POLL)) {
 271                 wpa_printf(MSG_DEBUG, "  Station has ACKed data poll");
 272                 /* data nullfunc frame poll did not produce TX errors; assume
 273                  * station ACKed it */
 274                 sta->timeout_next = STA_NULLFUNC;
 275                 next_time = hapd->conf->ap_max_inactivity;
 276         }
 277
 278         if (next_time) {
 279                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 280                                        sta);
 281                 return;
 282         }
 283
 284         if (sta->timeout_next == STA_NULLFUNC &&
 285             (sta->flags & WLAN_STA_ASSOC)) {
 286                 /* send data frame to poll STA and check whether this frame
 287                  * is ACKed */
 288                 struct ieee80211_hdr hdr;
 289
 290                 wpa_printf(MSG_DEBUG, "  Polling STA with data frame");
 291                 sta->flags |= WLAN_STA_PENDING_POLL;
 292
 293 #ifndef CONFIG_NATIVE_WINDOWS
 294                 os_memset(&hdr, 0, sizeof(hdr));
 295                 if (hapd->driver &&
 296                     os_strcmp(hapd->driver->name, "hostap") == 0) {
 297                         /*
 298                          * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
 299                          * but it is apparently not retried so TX Exc events
 300                          * are not received for it.
 301                          */
 302                         hdr.frame_control =
 303                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 304                                              WLAN_FC_STYPE_DATA);
 305                 } else {
 306                         hdr.frame_control =
 307                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 308                                              WLAN_FC_STYPE_NULLFUNC);
 309                 }
 310
 311                 hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
 312                 os_memcpy(hdr.IEEE80211_DA_FROMDS, sta->addr, ETH_ALEN);
 313                 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, hapd->own_addr,
 314                           ETH_ALEN);
 315                 os_memcpy(hdr.IEEE80211_SA_FROMDS, hapd->own_addr, ETH_ALEN);
 316
 317                 if (hostapd_send_mgmt_frame(hapd, &hdr, sizeof(hdr)) < 0)
 318                         perror("ap_handle_timer: send");
 319 #endif /* CONFIG_NATIVE_WINDOWS */
 320         } else if (sta->timeout_next != STA_REMOVE) {
 321                 int deauth = sta->timeout_next == STA_DEAUTH;
 322
 323                 wpa_printf(MSG_DEBUG, "Sending %s info to STA " MACSTR,
 324                            deauth ? "deauthentication" : "disassociation",
 325                            MAC2STR(sta->addr));
 326
 327                 if (deauth) {
 328                         hostapd_sta_deauth(hapd, sta->addr,
 329                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 330                 } else {
 331                         hostapd_sta_disassoc(
 332                                 hapd, sta->addr,
 333                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 334                 }
 335         }
 336
 337         switch (sta->timeout_next) {
 338         case STA_NULLFUNC:
 339                 sta->timeout_next = STA_DISASSOC;
 340                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 341                                        hapd, sta);
 342                 break;
 343         case STA_DISASSOC:
 344                 sta->flags &= ~WLAN_STA_ASSOC;
 345                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 346                 if (!sta->acct_terminate_cause)
 347                         sta->acct_terminate_cause =
 348                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 349                 accounting_sta_stop(hapd, sta);
 350                 ieee802_1x_free_station(sta);
 351                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 352                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 353                                "inactivity");
 354                 sta->timeout_next = STA_DEAUTH;
 355                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 356                                        hapd, sta);
 357                 mlme_disassociate_indication(
 358                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 359                 break;
 360         case STA_DEAUTH:
 361         case STA_REMOVE:
 362                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 363                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 364                                "inactivity");
 365                 if (!sta->acct_terminate_cause)
 366                         sta->acct_terminate_cause =
 367                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 368                 mlme_deauthenticate_indication(
 369                         hapd, sta,
 370                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 371                 ap_free_sta(hapd, sta);
 372                 break;
 373         }
 374 }
 375
 376
 377 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 378 {
 379         struct hostapd_data *hapd = eloop_ctx;
 380         struct sta_info *sta = timeout_ctx;
 381         u8 addr[ETH_ALEN];
 382
 383         if (!(sta->flags & WLAN_STA_AUTH))
 384                 return;
 385
 386         mlme_deauthenticate_indication(hapd, sta,
 387                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 388         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 389                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 390                        "session timeout");
 391         sta->acct_terminate_cause =
 392                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 393         os_memcpy(addr, sta->addr, ETH_ALEN);
 394         ap_free_sta(hapd, sta);
 395         hostapd_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 396 }
 397
 398
 399 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 400                             u32 session_timeout)
 401 {
 402         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 403                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 404                        "seconds", session_timeout);
 405         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 406         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 407                                hapd, sta);
 408 }
 409
 410
 411 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 412 {
 413         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 414 }
 415
 416
 417 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 418 {
 419         struct sta_info *sta;
 420
 421         sta = ap_get_sta(hapd, addr);
 422         if (sta)
 423                 return sta;
 424
 425         wpa_printf(MSG_DEBUG, "  New STA");
 426         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 427                 /* FIX: might try to remove some old STAs first? */
 428                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 429                            hapd->num_sta, hapd->conf->max_num_sta);
 430                 return NULL;
 431         }
 432
 433         sta = os_zalloc(sizeof(struct sta_info));
 434         if (sta == NULL) {
 435                 wpa_printf(MSG_ERROR, "malloc failed");
 436                 return NULL;
 437         }
 438         sta->acct_interim_interval = hapd->conf->radius->acct_interim_interval;
 439
 440         /* initialize STA info data */
 441         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 442                                ap_handle_timer, hapd, sta);
 443         os_memcpy(sta->addr, addr, ETH_ALEN);
 444         sta->next = hapd->sta_list;
 445         hapd->sta_list = sta;
 446         hapd->num_sta++;
 447         ap_sta_hash_add(hapd, sta);
 448         sta->ssid = &hapd->conf->ssid;
 449
 450         return sta;
 451 }
 452
 453
 454 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 455 {
 456         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 457
 458         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 459                    MAC2STR(sta->addr));
 460         if (hostapd_sta_remove(hapd, sta->addr) &&
 461             sta->flags & WLAN_STA_ASSOC) {
 462                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 463                            " from kernel driver.", MAC2STR(sta->addr));
 464                 return -1;
 465         }
 466         return 0;
 467 }
 468
 469
 470 static int ap_sta_in_other_bss(struct hostapd_data *hapd,
 471                                struct sta_info *sta, u32 flags)
 472 {
 473         struct hostapd_iface *iface = hapd->iface;
 474         size_t i;
 475
 476         for (i = 0; i < iface->num_bss; i++) {
 477                 struct hostapd_data *bss = iface->bss[i];
 478                 struct sta_info *sta2;
 479                 /* bss should always be set during operation, but it may be
 480                  * NULL during reconfiguration. Assume the STA is not
 481                  * associated to another BSS in that case to avoid NULL pointer
 482                  * dereferences. */
 483                 if (bss == hapd || bss == NULL)
 484                         continue;
 485                 sta2 = ap_get_sta(bss, sta->addr);
 486                 if (sta2 && ((sta2->flags & flags) == flags))
 487                         return 1;
 488         }
 489
 490         return 0;
 491 }
 492
 493
 494 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 495                          u16 reason)
 496 {
 497         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 498                    hapd->conf->iface, MAC2STR(sta->addr));
 499         sta->flags &= ~WLAN_STA_ASSOC;
 500         if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC))
 501                 ap_sta_remove(hapd, sta);
 502         sta->timeout_next = STA_DEAUTH;
 503         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 504         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 505                                ap_handle_timer, hapd, sta);
 506         accounting_sta_stop(hapd, sta);
 507         ieee802_1x_free_station(sta);
 508
 509         mlme_disassociate_indication(hapd, sta, reason);
 510 }
 511
 512
 513 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 514                            u16 reason)
 515 {
 516         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 517                    hapd->conf->iface, MAC2STR(sta->addr));
 518         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 519         if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC))
 520                 ap_sta_remove(hapd, sta);
 521         sta->timeout_next = STA_REMOVE;
 522         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 523         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 524                                ap_handle_timer, hapd, sta);
 525         accounting_sta_stop(hapd, sta);
 526         ieee802_1x_free_station(sta);
 527
 528         mlme_deauthenticate_indication(hapd, sta, reason);
 529 }
 530
 531
 532 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 533                      int old_vlanid)
 534 {
 535 #ifndef CONFIG_NO_VLAN
 536         const char *iface;
 537         struct hostapd_vlan *vlan = NULL;
 538
 539         /*
 540          * Do not proceed furthur if the vlan id remains same. We do not want
 541          * duplicate dynamic vlan entries.
 542          */
 543         if (sta->vlan_id == old_vlanid)
 544                 return 0;
 545
 546         /*
 547          * During 1x reauth, if the vlan id changes, then remove the old id and
 548          * proceed furthur to add the new one.
 549          */
 550         if (old_vlanid > 0)
 551                 vlan_remove_dynamic(hapd, old_vlanid);
 552
 553         iface = hapd->conf->iface;
 554         if (sta->ssid->vlan[0])
 555                 iface = sta->ssid->vlan;
 556
 557         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 558                 sta->vlan_id = 0;
 559         else if (sta->vlan_id > 0) {
 560                 vlan = hapd->conf->vlan;
 561                 while (vlan) {
 562                         if (vlan->vlan_id == sta->vlan_id ||
 563                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 564                                 iface = vlan->ifname;
 565                                 break;
 566                         }
 567                         vlan = vlan->next;
 568                 }
 569         }
 570
 571         if (sta->vlan_id > 0 && vlan == NULL) {
 572                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 573                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 574                                "binding station to (vlan_id=%d)",
 575                                sta->vlan_id);
 576                 return -1;
 577         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 578                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 579                 if (vlan == NULL) {
 580                         hostapd_logger(hapd, sta->addr,
 581                                        HOSTAPD_MODULE_IEEE80211,
 582                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 583                                        "dynamic VLAN interface for vlan_id=%d",
 584                                        sta->vlan_id);
 585                         return -1;
 586                 }
 587
 588                 iface = vlan->ifname;
 589                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 590                         hostapd_logger(hapd, sta->addr,
 591                                        HOSTAPD_MODULE_IEEE80211,
 592                                        HOSTAPD_LEVEL_DEBUG, "could not "
 593                                        "configure encryption for dynamic VLAN "
 594                                        "interface for vlan_id=%d",
 595                                        sta->vlan_id);
 596                 }
 597
 598                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 599                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 600                                "interface '%s'", iface);
 601         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 602                 if (sta->vlan_id > 0) {
 603                         vlan->dynamic_vlan++;
 604                         hostapd_logger(hapd, sta->addr,
 605                                        HOSTAPD_MODULE_IEEE80211,
 606                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 607                                        "dynamic VLAN interface '%s'", iface);
 608                 }
 609
 610                 /*
 611                  * Update encryption configuration for statically generated
 612                  * VLAN interface. This is only used for static WEP
 613                  * configuration for the case where hostapd did not yet know
 614                  * which keys are to be used when the interface was added.
 615                  */
 616                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 617                         hostapd_logger(hapd, sta->addr,
 618                                        HOSTAPD_MODULE_IEEE80211,
 619                                        HOSTAPD_LEVEL_DEBUG, "could not "
 620                                        "configure encryption for VLAN "
 621                                        "interface for vlan_id=%d",
 622                                        sta->vlan_id);
 623                 }
 624         }
 625
 626         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 627                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 628                        "'%s'", iface);
 629
 630         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 631                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 632
 633         return hostapd_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 634 #else /* CONFIG_NO_VLAN */
 635         return 0;
 636 #endif /* CONFIG_NO_VLAN */
 637 }
 638
 639
 640 #ifdef CONFIG_IEEE80211W
 641
 642 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 643 {
 644         u32 tu;
 645         struct os_time now, passed;
 646         os_get_time(&now);
 647         os_time_sub(&now, &sta->sa_query_start, &passed);
 648         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 649         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 650                 hostapd_logger(hapd, sta->addr,
 651                                HOSTAPD_MODULE_IEEE80211,
 652                                HOSTAPD_LEVEL_DEBUG,
 653                                "association SA Query timed out");
 654                 sta->sa_query_timed_out = 1;
 655                 os_free(sta->sa_query_trans_id);
 656                 sta->sa_query_trans_id = NULL;
 657                 sta->sa_query_count = 0;
 658                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 659                 return 1;
 660         }
 661
 662         return 0;
 663 }
 664
 665
 666 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 667 {
 668         struct hostapd_data *hapd = eloop_ctx;
 669         struct sta_info *sta = timeout_ctx;
 670         unsigned int timeout, sec, usec;
 671         u8 *trans_id, *nbuf;
 672
 673         if (sta->sa_query_count > 0 &&
 674             ap_check_sa_query_timeout(hapd, sta))
 675                 return;
 676
 677         nbuf = os_realloc(sta->sa_query_trans_id,
 678                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 679         if (nbuf == NULL)
 680                 return;
 681         if (sta->sa_query_count == 0) {
 682                 /* Starting a new SA Query procedure */
 683                 os_get_time(&sta->sa_query_start);
 684         }
 685         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 686         sta->sa_query_trans_id = nbuf;
 687         sta->sa_query_count++;
 688
 689         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 690
 691         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 692         sec = ((timeout / 1000) * 1024) / 1000;
 693         usec = (timeout % 1000) * 1024;
 694         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 695
 696         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 697                        HOSTAPD_LEVEL_DEBUG,
 698                        "association SA Query attempt %d", sta->sa_query_count);
 699
 700 #ifdef NEED_MLME
 701         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 702 #endif /* NEED_MLME */
 703 }
 704
 705
 706 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 707 {
 708         ap_sa_query_timer(hapd, sta);
 709 }
 710
 711
 712 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 713 {
 714         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 715         os_free(sta->sa_query_trans_id);
 716         sta->sa_query_trans_id = NULL;
 717         sta->sa_query_count = 0;
 718 }
 719
 720 #endif /* CONFIG_IEEE80211W */