src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "utils/eloop.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "radius/radius.h"
  21 #include "radius/radius_client.h"
  22 #include "drivers/driver.h"
  23 #include "hostapd.h"
  24 #include "accounting.h"
  25 #include "ieee802_1x.h"
  26 #include "ieee802_11.h"
  27 #include "wpa_auth.h"
  28 #include "preauth_auth.h"
  29 #include "ap_config.h"
  30 #include "beacon.h"
  31 #include "ap_mlme.h"
  32 #include "vlan_init.h"
  33 #include "sta_info.h"
  34
  35 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  36                                        struct sta_info *sta);
  37 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  38 #ifdef CONFIG_IEEE80211W
  39 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  40 #endif /* CONFIG_IEEE80211W */
  41
  42 int ap_for_each_sta(struct hostapd_data *hapd,
  43                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  44                               void *ctx),
  45                     void *ctx)
  46 {
  47         struct sta_info *sta;
  48
  49         for (sta = hapd->sta_list; sta; sta = sta->next) {
  50                 if (cb(hapd, sta, ctx))
  51                         return 1;
  52         }
  53
  54         return 0;
  55 }
  56
  57
  58 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  59 {
  60         struct sta_info *s;
  61
  62         s = hapd->sta_hash[STA_HASH(sta)];
  63         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  64                 s = s->hnext;
  65         return s;
  66 }
  67
  68
  69 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  70 {
  71         struct sta_info *tmp;
  72
  73         if (hapd->sta_list == sta) {
  74                 hapd->sta_list = sta->next;
  75                 return;
  76         }
  77
  78         tmp = hapd->sta_list;
  79         while (tmp != NULL && tmp->next != sta)
  80                 tmp = tmp->next;
  81         if (tmp == NULL) {
  82                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  83                            "list.", MAC2STR(sta->addr));
  84         } else
  85                 tmp->next = sta->next;
  86 }
  87
  88
  89 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  90 {
  91         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  92         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  93 }
  94
  95
  96 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
  97 {
  98         struct sta_info *s;
  99
 100         s = hapd->sta_hash[STA_HASH(sta->addr)];
 101         if (s == NULL) return;
 102         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 103                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 104                 return;
 105         }
 106
 107         while (s->hnext != NULL &&
 108                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 109                 s = s->hnext;
 110         if (s->hnext != NULL)
 111                 s->hnext = s->hnext->hnext;
 112         else
 113                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 114                            " from hash table", MAC2STR(sta->addr));
 115 }
 116
 117
 118 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 119 {
 120         int set_beacon = 0;
 121
 122         accounting_sta_stop(hapd, sta);
 123
 124         if (sta->flags & WLAN_STA_WDS)
 125                 hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 0);
 126
 127         if (!(sta->flags & WLAN_STA_PREAUTH))
 128                 hapd->drv.sta_remove(hapd, sta->addr);
 129
 130         ap_sta_hash_del(hapd, sta);
 131         ap_sta_list_del(hapd, sta);
 132
 133         if (sta->aid > 0)
 134                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 135                         ~BIT((sta->aid - 1) % 32);
 136
 137         hapd->num_sta--;
 138         if (sta->nonerp_set) {
 139                 sta->nonerp_set = 0;
 140                 hapd->iface->num_sta_non_erp--;
 141                 if (hapd->iface->num_sta_non_erp == 0)
 142                         set_beacon++;
 143         }
 144
 145         if (sta->no_short_slot_time_set) {
 146                 sta->no_short_slot_time_set = 0;
 147                 hapd->iface->num_sta_no_short_slot_time--;
 148                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 149                     && hapd->iface->num_sta_no_short_slot_time == 0)
 150                         set_beacon++;
 151         }
 152
 153         if (sta->no_short_preamble_set) {
 154                 sta->no_short_preamble_set = 0;
 155                 hapd->iface->num_sta_no_short_preamble--;
 156                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 157                     && hapd->iface->num_sta_no_short_preamble == 0)
 158                         set_beacon++;
 159         }
 160
 161         if (sta->no_ht_gf_set) {
 162                 sta->no_ht_gf_set = 0;
 163                 hapd->iface->num_sta_ht_no_gf--;
 164         }
 165
 166         if (sta->no_ht_set) {
 167                 sta->no_ht_set = 0;
 168                 hapd->iface->num_sta_no_ht--;
 169         }
 170
 171         if (sta->ht_20mhz_set) {
 172                 sta->ht_20mhz_set = 0;
 173                 hapd->iface->num_sta_ht_20mhz--;
 174         }
 175
 176 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 177         if (hostapd_ht_operation_update(hapd->iface) > 0)
 178                 set_beacon++;
 179 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 180
 181         if (set_beacon)
 182                 ieee802_11_set_beacons(hapd->iface);
 183
 184         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 185         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 186
 187         ieee802_1x_free_station(sta);
 188         wpa_auth_sta_deinit(sta->wpa_sm);
 189         rsn_preauth_free_station(hapd, sta);
 190 #ifndef CONFIG_NO_RADIUS
 191         radius_client_flush_auth(hapd->radius, sta->addr);
 192 #endif /* CONFIG_NO_RADIUS */
 193
 194         os_free(sta->last_assoc_req);
 195         os_free(sta->challenge);
 196
 197 #ifdef CONFIG_IEEE80211W
 198         os_free(sta->sa_query_trans_id);
 199         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 200 #endif /* CONFIG_IEEE80211W */
 201
 202         wpabuf_free(sta->wps_ie);
 203
 204         os_free(sta->ht_capabilities);
 205
 206         os_free(sta);
 207 }
 208
 209
 210 void hostapd_free_stas(struct hostapd_data *hapd)
 211 {
 212         struct sta_info *sta, *prev;
 213
 214         sta = hapd->sta_list;
 215
 216         while (sta) {
 217                 prev = sta;
 218                 if (sta->flags & WLAN_STA_AUTH) {
 219                         mlme_deauthenticate_indication(
 220                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 221                 }
 222                 sta = sta->next;
 223                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 224                            MAC2STR(prev->addr));
 225                 ap_free_sta(hapd, prev);
 226         }
 227 }
 228
 229
 230 /**
 231  * ap_handle_timer - Per STA timer handler
 232  * @eloop_ctx: struct hostapd_data *
 233  * @timeout_ctx: struct sta_info *
 234  *
 235  * This function is called to check station activity and to remove inactive
 236  * stations.
 237  */
 238 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 239 {
 240         struct hostapd_data *hapd = eloop_ctx;
 241         struct sta_info *sta = timeout_ctx;
 242         unsigned long next_time = 0;
 243
 244         if (sta->timeout_next == STA_REMOVE) {
 245                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 246                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 247                                "local deauth request");
 248                 ap_free_sta(hapd, sta);
 249                 return;
 250         }
 251
 252         if ((sta->flags & WLAN_STA_ASSOC) &&
 253             (sta->timeout_next == STA_NULLFUNC ||
 254              sta->timeout_next == STA_DISASSOC)) {
 255                 int inactive_sec;
 256                 wpa_printf(MSG_DEBUG, "Checking STA " MACSTR " inactivity:",
 257                            MAC2STR(sta->addr));
 258                 inactive_sec = hapd->drv.get_inact_sec(hapd, sta->addr);
 259                 if (inactive_sec == -1) {
 260                         wpa_printf(MSG_DEBUG, "Could not get station info "
 261                                    "from kernel driver for " MACSTR ".",
 262                                    MAC2STR(sta->addr));
 263                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 264                            sta->flags & WLAN_STA_ASSOC) {
 265                         /* station activity detected; reset timeout state */
 266                         wpa_printf(MSG_DEBUG, "  Station has been active");
 267                         sta->timeout_next = STA_NULLFUNC;
 268                         next_time = hapd->conf->ap_max_inactivity -
 269                                 inactive_sec;
 270                 }
 271         }
 272
 273         if ((sta->flags & WLAN_STA_ASSOC) &&
 274             sta->timeout_next == STA_DISASSOC &&
 275             !(sta->flags & WLAN_STA_PENDING_POLL)) {
 276                 wpa_printf(MSG_DEBUG, "  Station has ACKed data poll");
 277                 /* data nullfunc frame poll did not produce TX errors; assume
 278                  * station ACKed it */
 279                 sta->timeout_next = STA_NULLFUNC;
 280                 next_time = hapd->conf->ap_max_inactivity;
 281         }
 282
 283         if (next_time) {
 284                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 285                                        sta);
 286                 return;
 287         }
 288
 289         if (sta->timeout_next == STA_NULLFUNC &&
 290             (sta->flags & WLAN_STA_ASSOC)) {
 291 #ifndef CONFIG_NATIVE_WINDOWS
 292                 /* send data frame to poll STA and check whether this frame
 293                  * is ACKed */
 294                 struct ieee80211_hdr hdr;
 295
 296                 wpa_printf(MSG_DEBUG, "  Polling STA with data frame");
 297                 sta->flags |= WLAN_STA_PENDING_POLL;
 298
 299                 os_memset(&hdr, 0, sizeof(hdr));
 300                 if (hapd->driver &&
 301                     os_strcmp(hapd->driver->name, "hostap") == 0) {
 302                         /*
 303                          * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
 304                          * but it is apparently not retried so TX Exc events
 305                          * are not received for it.
 306                          */
 307                         hdr.frame_control =
 308                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 309                                              WLAN_FC_STYPE_DATA);
 310                 } else {
 311                         hdr.frame_control =
 312                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 313                                              WLAN_FC_STYPE_NULLFUNC);
 314                 }
 315
 316                 hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
 317                 os_memcpy(hdr.IEEE80211_DA_FROMDS, sta->addr, ETH_ALEN);
 318                 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, hapd->own_addr,
 319                           ETH_ALEN);
 320                 os_memcpy(hdr.IEEE80211_SA_FROMDS, hapd->own_addr, ETH_ALEN);
 321
 322                 if (hapd->drv.send_mgmt_frame(hapd, &hdr, sizeof(hdr)) < 0)
 323                         perror("ap_handle_timer: send");
 324 #endif /* CONFIG_NATIVE_WINDOWS */
 325         } else if (sta->timeout_next != STA_REMOVE) {
 326                 int deauth = sta->timeout_next == STA_DEAUTH;
 327
 328                 wpa_printf(MSG_DEBUG, "Sending %s info to STA " MACSTR,
 329                            deauth ? "deauthentication" : "disassociation",
 330                            MAC2STR(sta->addr));
 331
 332                 if (deauth) {
 333                         hapd->drv.sta_deauth(hapd, sta->addr,
 334                                              WLAN_REASON_PREV_AUTH_NOT_VALID);
 335                 } else {
 336                         hapd->drv.sta_disassoc(
 337                                 hapd, sta->addr,
 338                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 339                 }
 340         }
 341
 342         switch (sta->timeout_next) {
 343         case STA_NULLFUNC:
 344                 sta->timeout_next = STA_DISASSOC;
 345                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 346                                        hapd, sta);
 347                 break;
 348         case STA_DISASSOC:
 349                 sta->flags &= ~WLAN_STA_ASSOC;
 350                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 351                 if (!sta->acct_terminate_cause)
 352                         sta->acct_terminate_cause =
 353                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 354                 accounting_sta_stop(hapd, sta);
 355                 ieee802_1x_free_station(sta);
 356                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 357                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 358                                "inactivity");
 359                 sta->timeout_next = STA_DEAUTH;
 360                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 361                                        hapd, sta);
 362                 mlme_disassociate_indication(
 363                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 364                 break;
 365         case STA_DEAUTH:
 366         case STA_REMOVE:
 367                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 368                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 369                                "inactivity");
 370                 if (!sta->acct_terminate_cause)
 371                         sta->acct_terminate_cause =
 372                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 373                 mlme_deauthenticate_indication(
 374                         hapd, sta,
 375                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 376                 ap_free_sta(hapd, sta);
 377                 break;
 378         }
 379 }
 380
 381
 382 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 383 {
 384         struct hostapd_data *hapd = eloop_ctx;
 385         struct sta_info *sta = timeout_ctx;
 386         u8 addr[ETH_ALEN];
 387
 388         if (!(sta->flags & WLAN_STA_AUTH))
 389                 return;
 390
 391         mlme_deauthenticate_indication(hapd, sta,
 392                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 393         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 394                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 395                        "session timeout");
 396         sta->acct_terminate_cause =
 397                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 398         os_memcpy(addr, sta->addr, ETH_ALEN);
 399         ap_free_sta(hapd, sta);
 400         hapd->drv.sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 401 }
 402
 403
 404 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 405                             u32 session_timeout)
 406 {
 407         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 408                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 409                        "seconds", session_timeout);
 410         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 411         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 412                                hapd, sta);
 413 }
 414
 415
 416 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 417 {
 418         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 419 }
 420
 421
 422 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 423 {
 424         struct sta_info *sta;
 425
 426         sta = ap_get_sta(hapd, addr);
 427         if (sta)
 428                 return sta;
 429
 430         wpa_printf(MSG_DEBUG, "  New STA");
 431         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 432                 /* FIX: might try to remove some old STAs first? */
 433                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 434                            hapd->num_sta, hapd->conf->max_num_sta);
 435                 return NULL;
 436         }
 437
 438         sta = os_zalloc(sizeof(struct sta_info));
 439         if (sta == NULL) {
 440                 wpa_printf(MSG_ERROR, "malloc failed");
 441                 return NULL;
 442         }
 443         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 444
 445         /* initialize STA info data */
 446         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 447                                ap_handle_timer, hapd, sta);
 448         os_memcpy(sta->addr, addr, ETH_ALEN);
 449         sta->next = hapd->sta_list;
 450         hapd->sta_list = sta;
 451         hapd->num_sta++;
 452         ap_sta_hash_add(hapd, sta);
 453         sta->ssid = &hapd->conf->ssid;
 454         ap_sta_remove_in_other_bss(hapd, sta);
 455
 456         return sta;
 457 }
 458
 459
 460 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 461 {
 462         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 463
 464         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 465                    MAC2STR(sta->addr));
 466         if (hapd->drv.sta_remove(hapd, sta->addr) &&
 467             sta->flags & WLAN_STA_ASSOC) {
 468                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 469                            " from kernel driver.", MAC2STR(sta->addr));
 470                 return -1;
 471         }
 472         return 0;
 473 }
 474
 475
 476 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 477                                        struct sta_info *sta)
 478 {
 479         struct hostapd_iface *iface = hapd->iface;
 480         size_t i;
 481
 482         for (i = 0; i < iface->num_bss; i++) {
 483                 struct hostapd_data *bss = iface->bss[i];
 484                 struct sta_info *sta2;
 485                 /* bss should always be set during operation, but it may be
 486                  * NULL during reconfiguration. Assume the STA is not
 487                  * associated to another BSS in that case to avoid NULL pointer
 488                  * dereferences. */
 489                 if (bss == hapd || bss == NULL)
 490                         continue;
 491                 sta2 = ap_get_sta(bss, sta->addr);
 492                 if (!sta2)
 493                         continue;
 494
 495                 ap_sta_disconnect(bss, sta2, sta2->addr,
 496                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 497         }
 498 }
 499
 500
 501 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 502                          u16 reason)
 503 {
 504         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 505                    hapd->conf->iface, MAC2STR(sta->addr));
 506         sta->flags &= ~WLAN_STA_ASSOC;
 507         ap_sta_remove(hapd, sta);
 508         sta->timeout_next = STA_DEAUTH;
 509         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 510         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 511                                ap_handle_timer, hapd, sta);
 512         accounting_sta_stop(hapd, sta);
 513         ieee802_1x_free_station(sta);
 514
 515         mlme_disassociate_indication(hapd, sta, reason);
 516 }
 517
 518
 519 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 520                            u16 reason)
 521 {
 522         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 523                    hapd->conf->iface, MAC2STR(sta->addr));
 524         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 525         ap_sta_remove(hapd, sta);
 526         sta->timeout_next = STA_REMOVE;
 527         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 528         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 529                                ap_handle_timer, hapd, sta);
 530         accounting_sta_stop(hapd, sta);
 531         ieee802_1x_free_station(sta);
 532
 533         mlme_deauthenticate_indication(hapd, sta, reason);
 534 }
 535
 536
 537 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 538                      int old_vlanid)
 539 {
 540 #ifndef CONFIG_NO_VLAN
 541         const char *iface;
 542         struct hostapd_vlan *vlan = NULL;
 543         int ret;
 544
 545         /*
 546          * Do not proceed furthur if the vlan id remains same. We do not want
 547          * duplicate dynamic vlan entries.
 548          */
 549         if (sta->vlan_id == old_vlanid)
 550                 return 0;
 551
 552         /*
 553          * During 1x reauth, if the vlan id changes, then remove the old id and
 554          * proceed furthur to add the new one.
 555          */
 556         if (old_vlanid > 0)
 557                 vlan_remove_dynamic(hapd, old_vlanid);
 558
 559         iface = hapd->conf->iface;
 560         if (sta->ssid->vlan[0])
 561                 iface = sta->ssid->vlan;
 562
 563         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 564                 sta->vlan_id = 0;
 565         else if (sta->vlan_id > 0) {
 566                 vlan = hapd->conf->vlan;
 567                 while (vlan) {
 568                         if (vlan->vlan_id == sta->vlan_id ||
 569                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 570                                 iface = vlan->ifname;
 571                                 break;
 572                         }
 573                         vlan = vlan->next;
 574                 }
 575         }
 576
 577         if (sta->vlan_id > 0 && vlan == NULL) {
 578                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 579                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 580                                "binding station to (vlan_id=%d)",
 581                                sta->vlan_id);
 582                 return -1;
 583         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 584                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 585                 if (vlan == NULL) {
 586                         hostapd_logger(hapd, sta->addr,
 587                                        HOSTAPD_MODULE_IEEE80211,
 588                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 589                                        "dynamic VLAN interface for vlan_id=%d",
 590                                        sta->vlan_id);
 591                         return -1;
 592                 }
 593
 594                 iface = vlan->ifname;
 595                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 596                         hostapd_logger(hapd, sta->addr,
 597                                        HOSTAPD_MODULE_IEEE80211,
 598                                        HOSTAPD_LEVEL_DEBUG, "could not "
 599                                        "configure encryption for dynamic VLAN "
 600                                        "interface for vlan_id=%d",
 601                                        sta->vlan_id);
 602                 }
 603
 604                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 605                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 606                                "interface '%s'", iface);
 607         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 608                 if (sta->vlan_id > 0) {
 609                         vlan->dynamic_vlan++;
 610                         hostapd_logger(hapd, sta->addr,
 611                                        HOSTAPD_MODULE_IEEE80211,
 612                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 613                                        "dynamic VLAN interface '%s'", iface);
 614                 }
 615
 616                 /*
 617                  * Update encryption configuration for statically generated
 618                  * VLAN interface. This is only used for static WEP
 619                  * configuration for the case where hostapd did not yet know
 620                  * which keys are to be used when the interface was added.
 621                  */
 622                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 623                         hostapd_logger(hapd, sta->addr,
 624                                        HOSTAPD_MODULE_IEEE80211,
 625                                        HOSTAPD_LEVEL_DEBUG, "could not "
 626                                        "configure encryption for VLAN "
 627                                        "interface for vlan_id=%d",
 628                                        sta->vlan_id);
 629                 }
 630         }
 631
 632         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 633                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 634                        "'%s'", iface);
 635
 636         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 637                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 638
 639         ret = hapd->drv.set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 640         if (ret < 0) {
 641                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 642                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 643                                "entry to vlan_id=%d", sta->vlan_id);
 644         }
 645         return ret;
 646 #else /* CONFIG_NO_VLAN */
 647         return 0;
 648 #endif /* CONFIG_NO_VLAN */
 649 }
 650
 651
 652 #ifdef CONFIG_IEEE80211W
 653
 654 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 655 {
 656         u32 tu;
 657         struct os_time now, passed;
 658         os_get_time(&now);
 659         os_time_sub(&now, &sta->sa_query_start, &passed);
 660         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 661         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 662                 hostapd_logger(hapd, sta->addr,
 663                                HOSTAPD_MODULE_IEEE80211,
 664                                HOSTAPD_LEVEL_DEBUG,
 665                                "association SA Query timed out");
 666                 sta->sa_query_timed_out = 1;
 667                 os_free(sta->sa_query_trans_id);
 668                 sta->sa_query_trans_id = NULL;
 669                 sta->sa_query_count = 0;
 670                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 671                 return 1;
 672         }
 673
 674         return 0;
 675 }
 676
 677
 678 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 679 {
 680         struct hostapd_data *hapd = eloop_ctx;
 681         struct sta_info *sta = timeout_ctx;
 682         unsigned int timeout, sec, usec;
 683         u8 *trans_id, *nbuf;
 684
 685         if (sta->sa_query_count > 0 &&
 686             ap_check_sa_query_timeout(hapd, sta))
 687                 return;
 688
 689         nbuf = os_realloc(sta->sa_query_trans_id,
 690                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 691         if (nbuf == NULL)
 692                 return;
 693         if (sta->sa_query_count == 0) {
 694                 /* Starting a new SA Query procedure */
 695                 os_get_time(&sta->sa_query_start);
 696         }
 697         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 698         sta->sa_query_trans_id = nbuf;
 699         sta->sa_query_count++;
 700
 701         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 702
 703         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 704         sec = ((timeout / 1000) * 1024) / 1000;
 705         usec = (timeout % 1000) * 1024;
 706         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 707
 708         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 709                        HOSTAPD_LEVEL_DEBUG,
 710                        "association SA Query attempt %d", sta->sa_query_count);
 711
 712 #ifdef NEED_AP_MLME
 713         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 714 #endif /* NEED_AP_MLME */
 715 }
 716
 717
 718 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 719 {
 720         ap_sa_query_timer(hapd, sta);
 721 }
 722
 723
 724 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 725 {
 726         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 727         os_free(sta->sa_query_trans_id);
 728         sta->sa_query_trans_id = NULL;
 729         sta->sa_query_count = 0;
 730 }
 731
 732 #endif /* CONFIG_IEEE80211W */
 733
 734
 735 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 736                        const u8 *addr, u16 reason)
 737 {
 738
 739         if (sta == NULL && addr)
 740                 sta = ap_get_sta(hapd, addr);
 741
 742         if (addr)
 743                 hapd->drv.sta_deauth(hapd, addr, reason);
 744
 745         if (sta == NULL)
 746                 return;
 747         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 748         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 749         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 750         sta->timeout_next = STA_REMOVE;
 751 }