git.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         if (hostapd_ht_operation_update(hapd->iface) > 0)
 175                 set_beacon++;
 176 #endif /* CONFIG_IEEE80211N */
 177
 178         if (set_beacon)
 179                 ieee802_11_set_beacons(hapd->iface);
 180
 181         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 182         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 183
 184         ieee802_1x_free_station(sta);
 185         wpa_auth_sta_deinit(sta->wpa_sm);
 186         rsn_preauth_free_station(hapd, sta);
 187         radius_client_flush_auth(hapd->radius, sta->addr);
 188
 189         os_free(sta->last_assoc_req);
 190         os_free(sta->challenge);
 191
 192 #ifdef CONFIG_IEEE80211W
 193         os_free(sta->sa_query_trans_id);
 194         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 195 #endif /* CONFIG_IEEE80211W */
 196
 197         wpabuf_free(sta->wps_ie);
 198
 199         os_free(sta);
 200 }
 201
 202
 203 void hostapd_free_stas(struct hostapd_data *hapd)
 204 {
 205         struct sta_info *sta, *prev;
 206
 207         sta = hapd->sta_list;
 208
 209         while (sta) {
 210                 prev = sta;
 211                 if (sta->flags & WLAN_STA_AUTH) {
 212                         mlme_deauthenticate_indication(
 213                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 214                 }
 215                 sta = sta->next;
 216                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 217                            MAC2STR(prev->addr));
 218                 ap_free_sta(hapd, prev);
 219         }
 220 }
 221
 222
 223 /**
 224  * ap_handle_timer - Per STA timer handler
 225  * @eloop_ctx: struct hostapd_data *
 226  * @timeout_ctx: struct sta_info *
 227  *
 228  * This function is called to check station activity and to remove inactive
 229  * stations.
 230  */
 231 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 232 {
 233         struct hostapd_data *hapd = eloop_ctx;
 234         struct sta_info *sta = timeout_ctx;
 235         unsigned long next_time = 0;
 236
 237         if (sta->timeout_next == STA_REMOVE) {
 238                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 239                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 240                                "local deauth request");
 241                 ap_free_sta(hapd, sta);
 242                 return;
 243         }
 244
 245         if ((sta->flags & WLAN_STA_ASSOC) &&
 246             (sta->timeout_next == STA_NULLFUNC ||
 247              sta->timeout_next == STA_DISASSOC)) {
 248                 int inactive_sec;
 249                 wpa_printf(MSG_DEBUG, "Checking STA " MACSTR " inactivity:",
 250                            MAC2STR(sta->addr));
 251                 inactive_sec = hostapd_get_inact_sec(hapd, sta->addr);
 252                 if (inactive_sec == -1) {
 253                         wpa_printf(MSG_DEBUG, "Could not get station info "
 254                                    "from kernel driver for " MACSTR ".",
 255                                    MAC2STR(sta->addr));
 256                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 257                            sta->flags & WLAN_STA_ASSOC) {
 258                         /* station activity detected; reset timeout state */
 259                         wpa_printf(MSG_DEBUG, "  Station has been active");
 260                         sta->timeout_next = STA_NULLFUNC;
 261                         next_time = hapd->conf->ap_max_inactivity -
 262                                 inactive_sec;
 263                 }
 264         }
 265
 266         if ((sta->flags & WLAN_STA_ASSOC) &&
 267             sta->timeout_next == STA_DISASSOC &&
 268             !(sta->flags & WLAN_STA_PENDING_POLL)) {
 269                 wpa_printf(MSG_DEBUG, "  Station has ACKed data poll");
 270                 /* data nullfunc frame poll did not produce TX errors; assume
 271                  * station ACKed it */
 272                 sta->timeout_next = STA_NULLFUNC;
 273                 next_time = hapd->conf->ap_max_inactivity;
 274         }
 275
 276         if (next_time) {
 277                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 278                                        sta);
 279                 return;
 280         }
 281
 282         if (sta->timeout_next == STA_NULLFUNC &&
 283             (sta->flags & WLAN_STA_ASSOC)) {
 284                 /* send data frame to poll STA and check whether this frame
 285                  * is ACKed */
 286                 struct ieee80211_hdr hdr;
 287
 288                 wpa_printf(MSG_DEBUG, "  Polling STA with data frame");
 289                 sta->flags |= WLAN_STA_PENDING_POLL;
 290
 291 #ifndef CONFIG_NATIVE_WINDOWS
 292                 os_memset(&hdr, 0, sizeof(hdr));
 293                 if (hapd->driver &&
 294                     os_strcmp(hapd->driver->name, "hostap") == 0) {
 295                         /*
 296                          * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
 297                          * but it is apparently not retried so TX Exc events
 298                          * are not received for it.
 299                          */
 300                         hdr.frame_control =
 301                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 302                                              WLAN_FC_STYPE_DATA);
 303                 } else {
 304                         hdr.frame_control =
 305                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 306                                              WLAN_FC_STYPE_NULLFUNC);
 307                 }
 308
 309                 hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
 310                 os_memcpy(hdr.IEEE80211_DA_FROMDS, sta->addr, ETH_ALEN);
 311                 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, hapd->own_addr,
 312                           ETH_ALEN);
 313                 os_memcpy(hdr.IEEE80211_SA_FROMDS, hapd->own_addr, ETH_ALEN);
 314
 315                 if (hostapd_send_mgmt_frame(hapd, &hdr, sizeof(hdr), 0) < 0)
 316                         perror("ap_handle_timer: send");
 317 #endif /* CONFIG_NATIVE_WINDOWS */
 318         } else if (sta->timeout_next != STA_REMOVE) {
 319                 int deauth = sta->timeout_next == STA_DEAUTH;
 320
 321                 wpa_printf(MSG_DEBUG, "Sending %s info to STA " MACSTR,
 322                            deauth ? "deauthentication" : "disassociation",
 323                            MAC2STR(sta->addr));
 324
 325                 if (deauth) {
 326                         hostapd_sta_deauth(hapd, sta->addr,
 327                                            WLAN_REASON_PREV_AUTH_NOT_VALID);
 328                 } else {
 329                         hostapd_sta_disassoc(
 330                                 hapd, sta->addr,
 331                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 332                 }
 333         }
 334
 335         switch (sta->timeout_next) {
 336         case STA_NULLFUNC:
 337                 sta->timeout_next = STA_DISASSOC;
 338                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 339                                        hapd, sta);
 340                 break;
 341         case STA_DISASSOC:
 342                 sta->flags &= ~WLAN_STA_ASSOC;
 343                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 344                 if (!sta->acct_terminate_cause)
 345                         sta->acct_terminate_cause =
 346                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 347                 accounting_sta_stop(hapd, sta);
 348                 ieee802_1x_free_station(sta);
 349                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 350                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 351                                "inactivity");
 352                 sta->timeout_next = STA_DEAUTH;
 353                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 354                                        hapd, sta);
 355                 mlme_disassociate_indication(
 356                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 357                 break;
 358         case STA_DEAUTH:
 359         case STA_REMOVE:
 360                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 361                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 362                                "inactivity");
 363                 if (!sta->acct_terminate_cause)
 364                         sta->acct_terminate_cause =
 365                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 366                 mlme_deauthenticate_indication(
 367                         hapd, sta,
 368                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 369                 ap_free_sta(hapd, sta);
 370                 break;
 371         }
 372 }
 373
 374
 375 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 376 {
 377         struct hostapd_data *hapd = eloop_ctx;
 378         struct sta_info *sta = timeout_ctx;
 379         u8 addr[ETH_ALEN];
 380
 381         if (!(sta->flags & WLAN_STA_AUTH))
 382                 return;
 383
 384         mlme_deauthenticate_indication(hapd, sta,
 385                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 386         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 387                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 388                        "session timeout");
 389         sta->acct_terminate_cause =
 390                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 391         os_memcpy(addr, sta->addr, ETH_ALEN);
 392         ap_free_sta(hapd, sta);
 393         hostapd_sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 394 }
 395
 396
 397 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 398                             u32 session_timeout)
 399 {
 400         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 401                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 402                        "seconds", session_timeout);
 403         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 404         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 405                                hapd, sta);
 406 }
 407
 408
 409 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 410 {
 411         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 412 }
 413
 414
 415 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 416 {
 417         struct sta_info *sta;
 418
 419         sta = ap_get_sta(hapd, addr);
 420         if (sta)
 421                 return sta;
 422
 423         wpa_printf(MSG_DEBUG, "  New STA");
 424         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 425                 /* FIX: might try to remove some old STAs first? */
 426                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 427                            hapd->num_sta, hapd->conf->max_num_sta);
 428                 return NULL;
 429         }
 430
 431         sta = os_zalloc(sizeof(struct sta_info));
 432         if (sta == NULL) {
 433                 wpa_printf(MSG_ERROR, "malloc failed");
 434                 return NULL;
 435         }
 436         sta->acct_interim_interval = hapd->conf->radius->acct_interim_interval;
 437
 438         /* initialize STA info data */
 439         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 440                                ap_handle_timer, hapd, sta);
 441         os_memcpy(sta->addr, addr, ETH_ALEN);
 442         sta->next = hapd->sta_list;
 443         hapd->sta_list = sta;
 444         hapd->num_sta++;
 445         ap_sta_hash_add(hapd, sta);
 446         sta->ssid = &hapd->conf->ssid;
 447
 448         return sta;
 449 }
 450
 451
 452 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 453 {
 454         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 455
 456         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 457                    MAC2STR(sta->addr));
 458         if (hostapd_sta_remove(hapd, sta->addr) &&
 459             sta->flags & WLAN_STA_ASSOC) {
 460                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 461                            " from kernel driver.", MAC2STR(sta->addr));
 462                 return -1;
 463         }
 464         return 0;
 465 }
 466
 467
 468 static int ap_sta_in_other_bss(struct hostapd_data *hapd,
 469                                struct sta_info *sta, u32 flags)
 470 {
 471         struct hostapd_iface *iface = hapd->iface;
 472         size_t i;
 473
 474         for (i = 0; i < iface->num_bss; i++) {
 475                 struct hostapd_data *bss = iface->bss[i];
 476                 struct sta_info *sta2;
 477                 /* bss should always be set during operation, but it may be
 478                  * NULL during reconfiguration. Assume the STA is not
 479                  * associated to another BSS in that case to avoid NULL pointer
 480                  * dereferences. */
 481                 if (bss == hapd || bss == NULL)
 482                         continue;
 483                 sta2 = ap_get_sta(bss, sta->addr);
 484                 if (sta2 && ((sta2->flags & flags) == flags))
 485                         return 1;
 486         }
 487
 488         return 0;
 489 }
 490
 491
 492 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 493                          u16 reason)
 494 {
 495         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 496                    hapd->conf->iface, MAC2STR(sta->addr));
 497         sta->flags &= ~WLAN_STA_ASSOC;
 498         if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC))
 499                 ap_sta_remove(hapd, sta);
 500         sta->timeout_next = STA_DEAUTH;
 501         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 502         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 503                                ap_handle_timer, hapd, sta);
 504         accounting_sta_stop(hapd, sta);
 505         ieee802_1x_free_station(sta);
 506
 507         mlme_disassociate_indication(hapd, sta, reason);
 508 }
 509
 510
 511 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 512                            u16 reason)
 513 {
 514         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 515                    hapd->conf->iface, MAC2STR(sta->addr));
 516         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 517         if (!ap_sta_in_other_bss(hapd, sta, WLAN_STA_ASSOC))
 518                 ap_sta_remove(hapd, sta);
 519         sta->timeout_next = STA_REMOVE;
 520         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 521         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 522                                ap_handle_timer, hapd, sta);
 523         accounting_sta_stop(hapd, sta);
 524         ieee802_1x_free_station(sta);
 525
 526         mlme_deauthenticate_indication(hapd, sta, reason);
 527 }
 528
 529
 530 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 531                      int old_vlanid)
 532 {
 533 #ifndef CONFIG_NO_VLAN
 534         const char *iface;
 535         struct hostapd_vlan *vlan = NULL;
 536
 537         /*
 538          * Do not proceed furthur if the vlan id remains same. We do not want
 539          * duplicate dynamic vlan entries.
 540          */
 541         if (sta->vlan_id == old_vlanid)
 542                 return 0;
 543
 544         /*
 545          * During 1x reauth, if the vlan id changes, then remove the old id and
 546          * proceed furthur to add the new one.
 547          */
 548         if (old_vlanid > 0)
 549                 vlan_remove_dynamic(hapd, old_vlanid);
 550
 551         iface = hapd->conf->iface;
 552         if (sta->ssid->vlan[0])
 553                 iface = sta->ssid->vlan;
 554
 555         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 556                 sta->vlan_id = 0;
 557         else if (sta->vlan_id > 0) {
 558                 vlan = hapd->conf->vlan;
 559                 while (vlan) {
 560                         if (vlan->vlan_id == sta->vlan_id ||
 561                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 562                                 iface = vlan->ifname;
 563                                 break;
 564                         }
 565                         vlan = vlan->next;
 566                 }
 567         }
 568
 569         if (sta->vlan_id > 0 && vlan == NULL) {
 570                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 571                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 572                                "binding station to (vlan_id=%d)",
 573                                sta->vlan_id);
 574                 return -1;
 575         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 576                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 577                 if (vlan == NULL) {
 578                         hostapd_logger(hapd, sta->addr,
 579                                        HOSTAPD_MODULE_IEEE80211,
 580                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 581                                        "dynamic VLAN interface for vlan_id=%d",
 582                                        sta->vlan_id);
 583                         return -1;
 584                 }
 585
 586                 iface = vlan->ifname;
 587                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 588                         hostapd_logger(hapd, sta->addr,
 589                                        HOSTAPD_MODULE_IEEE80211,
 590                                        HOSTAPD_LEVEL_DEBUG, "could not "
 591                                        "configure encryption for dynamic VLAN "
 592                                        "interface for vlan_id=%d",
 593                                        sta->vlan_id);
 594                 }
 595
 596                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 597                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 598                                "interface '%s'", iface);
 599         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 600                 if (sta->vlan_id > 0) {
 601                         vlan->dynamic_vlan++;
 602                         hostapd_logger(hapd, sta->addr,
 603                                        HOSTAPD_MODULE_IEEE80211,
 604                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 605                                        "dynamic VLAN interface '%s'", iface);
 606                 }
 607
 608                 /*
 609                  * Update encryption configuration for statically generated
 610                  * VLAN interface. This is only used for static WEP
 611                  * configuration for the case where hostapd did not yet know
 612                  * which keys are to be used when the interface was added.
 613                  */
 614                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 615                         hostapd_logger(hapd, sta->addr,
 616                                        HOSTAPD_MODULE_IEEE80211,
 617                                        HOSTAPD_LEVEL_DEBUG, "could not "
 618                                        "configure encryption for VLAN "
 619                                        "interface for vlan_id=%d",
 620                                        sta->vlan_id);
 621                 }
 622         }
 623
 624         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 625                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 626                        "'%s'", iface);
 627
 628         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 629                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 630
 631         return hostapd_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 632 #else /* CONFIG_NO_VLAN */
 633         return 0;
 634 #endif /* CONFIG_NO_VLAN */
 635 }
 636
 637
 638 #ifdef CONFIG_IEEE80211W
 639
 640 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 641 {
 642         u32 tu;
 643         struct os_time now, passed;
 644         os_get_time(&now);
 645         os_time_sub(&now, &sta->sa_query_start, &passed);
 646         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 647         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 648                 hostapd_logger(hapd, sta->addr,
 649                                HOSTAPD_MODULE_IEEE80211,
 650                                HOSTAPD_LEVEL_DEBUG,
 651                                "association SA Query timed out");
 652                 sta->sa_query_timed_out = 1;
 653                 os_free(sta->sa_query_trans_id);
 654                 sta->sa_query_trans_id = NULL;
 655                 sta->sa_query_count = 0;
 656                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 657                 return 1;
 658         }
 659
 660         return 0;
 661 }
 662
 663
 664 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 665 {
 666         struct hostapd_data *hapd = eloop_ctx;
 667         struct sta_info *sta = timeout_ctx;
 668         unsigned int timeout, sec, usec;
 669         u8 *trans_id, *nbuf;
 670
 671         if (sta->sa_query_count > 0 &&
 672             ap_check_sa_query_timeout(hapd, sta))
 673                 return;
 674
 675         nbuf = os_realloc(sta->sa_query_trans_id,
 676                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 677         if (nbuf == NULL)
 678                 return;
 679         if (sta->sa_query_count == 0) {
 680                 /* Starting a new SA Query procedure */
 681                 os_get_time(&sta->sa_query_start);
 682         }
 683         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 684         sta->sa_query_trans_id = nbuf;
 685         sta->sa_query_count++;
 686
 687         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 688
 689         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 690         sec = ((timeout / 1000) * 1024) / 1000;
 691         usec = (timeout % 1000) * 1024;
 692         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 693
 694         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 695                        HOSTAPD_LEVEL_DEBUG,
 696                        "association SA Query attempt %d", sta->sa_query_count);
 697
 698         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 699 }
 700
 701
 702 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 703 {
 704         ap_sa_query_timer(hapd, sta);
 705 }
 706
 707
 708 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 709 {
 710         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 711         os_free(sta->sa_query_trans_id);
 712         sta->sa_query_trans_id = NULL;
 713         sta->sa_query_count = 0;
 714 }
 715
 716 #endif /* CONFIG_IEEE80211W */