www.project-moonshot.org Git - mech_eap.orig/blob - libeap/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 "p2p/p2p.h"
  24 #include "hostapd.h"
  25 #include "accounting.h"
  26 #include "ieee802_1x.h"
  27 #include "ieee802_11.h"
  28 #include "wpa_auth.h"
  29 #include "preauth_auth.h"
  30 #include "ap_config.h"
  31 #include "beacon.h"
  32 #include "ap_mlme.h"
  33 #include "vlan_init.h"
  34 #include "p2p_hostapd.h"
  35 #include "sta_info.h"
  36
  37 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  38                                        struct sta_info *sta);
  39 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  40 #ifdef CONFIG_IEEE80211W
  41 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  42 #endif /* CONFIG_IEEE80211W */
  43
  44 int ap_for_each_sta(struct hostapd_data *hapd,
  45                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  46                               void *ctx),
  47                     void *ctx)
  48 {
  49         struct sta_info *sta;
  50
  51         for (sta = hapd->sta_list; sta; sta = sta->next) {
  52                 if (cb(hapd, sta, ctx))
  53                         return 1;
  54         }
  55
  56         return 0;
  57 }
  58
  59
  60 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  61 {
  62         struct sta_info *s;
  63
  64         s = hapd->sta_hash[STA_HASH(sta)];
  65         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  66                 s = s->hnext;
  67         return s;
  68 }
  69
  70
  71 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
  72 {
  73         struct sta_info *tmp;
  74
  75         if (hapd->sta_list == sta) {
  76                 hapd->sta_list = sta->next;
  77                 return;
  78         }
  79
  80         tmp = hapd->sta_list;
  81         while (tmp != NULL && tmp->next != sta)
  82                 tmp = tmp->next;
  83         if (tmp == NULL) {
  84                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
  85                            "list.", MAC2STR(sta->addr));
  86         } else
  87                 tmp->next = sta->next;
  88 }
  89
  90
  91 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
  92 {
  93         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
  94         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
  95 }
  96
  97
  98 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
  99 {
 100         struct sta_info *s;
 101
 102         s = hapd->sta_hash[STA_HASH(sta->addr)];
 103         if (s == NULL) return;
 104         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 105                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 106                 return;
 107         }
 108
 109         while (s->hnext != NULL &&
 110                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 111                 s = s->hnext;
 112         if (s->hnext != NULL)
 113                 s->hnext = s->hnext->hnext;
 114         else
 115                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 116                            " from hash table", MAC2STR(sta->addr));
 117 }
 118
 119
 120 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 121 {
 122         int set_beacon = 0;
 123
 124         accounting_sta_stop(hapd, sta);
 125
 126         if (sta->flags & WLAN_STA_WDS)
 127                 hapd->drv.set_wds_sta(hapd, sta->addr, sta->aid, 0);
 128
 129         if (!(sta->flags & WLAN_STA_PREAUTH))
 130                 hapd->drv.sta_remove(hapd, sta->addr);
 131
 132         ap_sta_hash_del(hapd, sta);
 133         ap_sta_list_del(hapd, sta);
 134
 135         if (sta->aid > 0)
 136                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 137                         ~BIT((sta->aid - 1) % 32);
 138
 139         hapd->num_sta--;
 140         if (sta->nonerp_set) {
 141                 sta->nonerp_set = 0;
 142                 hapd->iface->num_sta_non_erp--;
 143                 if (hapd->iface->num_sta_non_erp == 0)
 144                         set_beacon++;
 145         }
 146
 147         if (sta->no_short_slot_time_set) {
 148                 sta->no_short_slot_time_set = 0;
 149                 hapd->iface->num_sta_no_short_slot_time--;
 150                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 151                     && hapd->iface->num_sta_no_short_slot_time == 0)
 152                         set_beacon++;
 153         }
 154
 155         if (sta->no_short_preamble_set) {
 156                 sta->no_short_preamble_set = 0;
 157                 hapd->iface->num_sta_no_short_preamble--;
 158                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 159                     && hapd->iface->num_sta_no_short_preamble == 0)
 160                         set_beacon++;
 161         }
 162
 163         if (sta->no_ht_gf_set) {
 164                 sta->no_ht_gf_set = 0;
 165                 hapd->iface->num_sta_ht_no_gf--;
 166         }
 167
 168         if (sta->no_ht_set) {
 169                 sta->no_ht_set = 0;
 170                 hapd->iface->num_sta_no_ht--;
 171         }
 172
 173         if (sta->ht_20mhz_set) {
 174                 sta->ht_20mhz_set = 0;
 175                 hapd->iface->num_sta_ht_20mhz--;
 176         }
 177
 178 #ifdef CONFIG_P2P
 179         if (sta->no_p2p_set) {
 180                 sta->no_p2p_set = 0;
 181                 hapd->num_sta_no_p2p--;
 182                 if (hapd->num_sta_no_p2p == 0)
 183                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 184         }
 185 #endif /* CONFIG_P2P */
 186
 187 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 188         if (hostapd_ht_operation_update(hapd->iface) > 0)
 189                 set_beacon++;
 190 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 191
 192         if (set_beacon)
 193                 ieee802_11_set_beacons(hapd->iface);
 194
 195         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 196         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 197
 198         ieee802_1x_free_station(sta);
 199         wpa_auth_sta_deinit(sta->wpa_sm);
 200         rsn_preauth_free_station(hapd, sta);
 201 #ifndef CONFIG_NO_RADIUS
 202         radius_client_flush_auth(hapd->radius, sta->addr);
 203 #endif /* CONFIG_NO_RADIUS */
 204
 205         os_free(sta->last_assoc_req);
 206         os_free(sta->challenge);
 207
 208 #ifdef CONFIG_IEEE80211W
 209         os_free(sta->sa_query_trans_id);
 210         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 211 #endif /* CONFIG_IEEE80211W */
 212
 213 #ifdef CONFIG_P2P
 214         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 215 #endif /* CONFIG_P2P */
 216
 217         wpabuf_free(sta->wps_ie);
 218         wpabuf_free(sta->p2p_ie);
 219
 220         os_free(sta->ht_capabilities);
 221
 222         os_free(sta);
 223 }
 224
 225
 226 void hostapd_free_stas(struct hostapd_data *hapd)
 227 {
 228         struct sta_info *sta, *prev;
 229
 230         sta = hapd->sta_list;
 231
 232         while (sta) {
 233                 prev = sta;
 234                 if (sta->flags & WLAN_STA_AUTH) {
 235                         mlme_deauthenticate_indication(
 236                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 237                 }
 238                 sta = sta->next;
 239                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 240                            MAC2STR(prev->addr));
 241                 ap_free_sta(hapd, prev);
 242         }
 243 }
 244
 245
 246 /**
 247  * ap_handle_timer - Per STA timer handler
 248  * @eloop_ctx: struct hostapd_data *
 249  * @timeout_ctx: struct sta_info *
 250  *
 251  * This function is called to check station activity and to remove inactive
 252  * stations.
 253  */
 254 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 255 {
 256         struct hostapd_data *hapd = eloop_ctx;
 257         struct sta_info *sta = timeout_ctx;
 258         unsigned long next_time = 0;
 259
 260         if (sta->timeout_next == STA_REMOVE) {
 261                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 262                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 263                                "local deauth request");
 264                 ap_free_sta(hapd, sta);
 265                 return;
 266         }
 267
 268         if ((sta->flags & WLAN_STA_ASSOC) &&
 269             (sta->timeout_next == STA_NULLFUNC ||
 270              sta->timeout_next == STA_DISASSOC)) {
 271                 int inactive_sec;
 272                 wpa_printf(MSG_DEBUG, "Checking STA " MACSTR " inactivity:",
 273                            MAC2STR(sta->addr));
 274                 inactive_sec = hapd->drv.get_inact_sec(hapd, sta->addr);
 275                 if (inactive_sec == -1) {
 276                         wpa_printf(MSG_DEBUG, "Could not get station info "
 277                                    "from kernel driver for " MACSTR ".",
 278                                    MAC2STR(sta->addr));
 279                 } else if (inactive_sec < hapd->conf->ap_max_inactivity &&
 280                            sta->flags & WLAN_STA_ASSOC) {
 281                         /* station activity detected; reset timeout state */
 282                         wpa_printf(MSG_DEBUG, "  Station has been active");
 283                         sta->timeout_next = STA_NULLFUNC;
 284                         next_time = hapd->conf->ap_max_inactivity -
 285                                 inactive_sec;
 286                 }
 287         }
 288
 289         if ((sta->flags & WLAN_STA_ASSOC) &&
 290             sta->timeout_next == STA_DISASSOC &&
 291             !(sta->flags & WLAN_STA_PENDING_POLL)) {
 292                 wpa_printf(MSG_DEBUG, "  Station has ACKed data poll");
 293                 /* data nullfunc frame poll did not produce TX errors; assume
 294                  * station ACKed it */
 295                 sta->timeout_next = STA_NULLFUNC;
 296                 next_time = hapd->conf->ap_max_inactivity;
 297         }
 298
 299         if (next_time) {
 300                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 301                                        sta);
 302                 return;
 303         }
 304
 305         if (sta->timeout_next == STA_NULLFUNC &&
 306             (sta->flags & WLAN_STA_ASSOC)) {
 307 #ifndef CONFIG_NATIVE_WINDOWS
 308                 /* send data frame to poll STA and check whether this frame
 309                  * is ACKed */
 310                 struct ieee80211_hdr hdr;
 311
 312                 wpa_printf(MSG_DEBUG, "  Polling STA with data frame");
 313                 sta->flags |= WLAN_STA_PENDING_POLL;
 314
 315                 os_memset(&hdr, 0, sizeof(hdr));
 316                 if (hapd->driver &&
 317                     os_strcmp(hapd->driver->name, "hostap") == 0) {
 318                         /*
 319                          * WLAN_FC_STYPE_NULLFUNC would be more appropriate,
 320                          * but it is apparently not retried so TX Exc events
 321                          * are not received for it.
 322                          */
 323                         hdr.frame_control =
 324                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 325                                              WLAN_FC_STYPE_DATA);
 326                 } else {
 327                         hdr.frame_control =
 328                                 IEEE80211_FC(WLAN_FC_TYPE_DATA,
 329                                              WLAN_FC_STYPE_NULLFUNC);
 330                 }
 331
 332                 hdr.frame_control |= host_to_le16(WLAN_FC_FROMDS);
 333                 os_memcpy(hdr.IEEE80211_DA_FROMDS, sta->addr, ETH_ALEN);
 334                 os_memcpy(hdr.IEEE80211_BSSID_FROMDS, hapd->own_addr,
 335                           ETH_ALEN);
 336                 os_memcpy(hdr.IEEE80211_SA_FROMDS, hapd->own_addr, ETH_ALEN);
 337
 338                 if (hapd->drv.send_mgmt_frame(hapd, &hdr, sizeof(hdr)) < 0)
 339                         perror("ap_handle_timer: send");
 340 #endif /* CONFIG_NATIVE_WINDOWS */
 341         } else if (sta->timeout_next != STA_REMOVE) {
 342                 int deauth = sta->timeout_next == STA_DEAUTH;
 343
 344                 wpa_printf(MSG_DEBUG, "Sending %s info to STA " MACSTR,
 345                            deauth ? "deauthentication" : "disassociation",
 346                            MAC2STR(sta->addr));
 347
 348                 if (deauth) {
 349                         hapd->drv.sta_deauth(hapd, sta->addr,
 350                                              WLAN_REASON_PREV_AUTH_NOT_VALID);
 351                 } else {
 352                         hapd->drv.sta_disassoc(
 353                                 hapd, sta->addr,
 354                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 355                 }
 356         }
 357
 358         switch (sta->timeout_next) {
 359         case STA_NULLFUNC:
 360                 sta->timeout_next = STA_DISASSOC;
 361                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 362                                        hapd, sta);
 363                 break;
 364         case STA_DISASSOC:
 365                 sta->flags &= ~WLAN_STA_ASSOC;
 366                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 367                 if (!sta->acct_terminate_cause)
 368                         sta->acct_terminate_cause =
 369                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 370                 accounting_sta_stop(hapd, sta);
 371                 ieee802_1x_free_station(sta);
 372                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 373                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 374                                "inactivity");
 375                 sta->timeout_next = STA_DEAUTH;
 376                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 377                                        hapd, sta);
 378                 mlme_disassociate_indication(
 379                         hapd, sta, WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY);
 380                 break;
 381         case STA_DEAUTH:
 382         case STA_REMOVE:
 383                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 384                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 385                                "inactivity");
 386                 if (!sta->acct_terminate_cause)
 387                         sta->acct_terminate_cause =
 388                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 389                 mlme_deauthenticate_indication(
 390                         hapd, sta,
 391                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 392                 ap_free_sta(hapd, sta);
 393                 break;
 394         }
 395 }
 396
 397
 398 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 399 {
 400         struct hostapd_data *hapd = eloop_ctx;
 401         struct sta_info *sta = timeout_ctx;
 402         u8 addr[ETH_ALEN];
 403
 404         if (!(sta->flags & WLAN_STA_AUTH))
 405                 return;
 406
 407         mlme_deauthenticate_indication(hapd, sta,
 408                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 409         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 410                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 411                        "session timeout");
 412         sta->acct_terminate_cause =
 413                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 414         os_memcpy(addr, sta->addr, ETH_ALEN);
 415         ap_free_sta(hapd, sta);
 416         hapd->drv.sta_deauth(hapd, addr, WLAN_REASON_PREV_AUTH_NOT_VALID);
 417 }
 418
 419
 420 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 421                             u32 session_timeout)
 422 {
 423         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 424                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 425                        "seconds", session_timeout);
 426         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 427         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 428                                hapd, sta);
 429 }
 430
 431
 432 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 433 {
 434         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 435 }
 436
 437
 438 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 439 {
 440         struct sta_info *sta;
 441
 442         sta = ap_get_sta(hapd, addr);
 443         if (sta)
 444                 return sta;
 445
 446         wpa_printf(MSG_DEBUG, "  New STA");
 447         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 448                 /* FIX: might try to remove some old STAs first? */
 449                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 450                            hapd->num_sta, hapd->conf->max_num_sta);
 451                 return NULL;
 452         }
 453
 454         sta = os_zalloc(sizeof(struct sta_info));
 455         if (sta == NULL) {
 456                 wpa_printf(MSG_ERROR, "malloc failed");
 457                 return NULL;
 458         }
 459         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 460
 461         /* initialize STA info data */
 462         eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 463                                ap_handle_timer, hapd, sta);
 464         os_memcpy(sta->addr, addr, ETH_ALEN);
 465         sta->next = hapd->sta_list;
 466         hapd->sta_list = sta;
 467         hapd->num_sta++;
 468         ap_sta_hash_add(hapd, sta);
 469         sta->ssid = &hapd->conf->ssid;
 470         ap_sta_remove_in_other_bss(hapd, sta);
 471
 472         return sta;
 473 }
 474
 475
 476 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 477 {
 478         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 479
 480         wpa_printf(MSG_DEBUG, "Removing STA " MACSTR " from kernel driver",
 481                    MAC2STR(sta->addr));
 482         if (hapd->drv.sta_remove(hapd, sta->addr) &&
 483             sta->flags & WLAN_STA_ASSOC) {
 484                 wpa_printf(MSG_DEBUG, "Could not remove station " MACSTR
 485                            " from kernel driver.", MAC2STR(sta->addr));
 486                 return -1;
 487         }
 488         return 0;
 489 }
 490
 491
 492 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 493                                        struct sta_info *sta)
 494 {
 495         struct hostapd_iface *iface = hapd->iface;
 496         size_t i;
 497
 498         for (i = 0; i < iface->num_bss; i++) {
 499                 struct hostapd_data *bss = iface->bss[i];
 500                 struct sta_info *sta2;
 501                 /* bss should always be set during operation, but it may be
 502                  * NULL during reconfiguration. Assume the STA is not
 503                  * associated to another BSS in that case to avoid NULL pointer
 504                  * dereferences. */
 505                 if (bss == hapd || bss == NULL)
 506                         continue;
 507                 sta2 = ap_get_sta(bss, sta->addr);
 508                 if (!sta2)
 509                         continue;
 510
 511                 ap_sta_disconnect(bss, sta2, sta2->addr,
 512                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 513         }
 514 }
 515
 516
 517 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 518                          u16 reason)
 519 {
 520         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 521                    hapd->conf->iface, MAC2STR(sta->addr));
 522         sta->flags &= ~WLAN_STA_ASSOC;
 523         ap_sta_remove(hapd, sta);
 524         sta->timeout_next = STA_DEAUTH;
 525         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 526         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 527                                ap_handle_timer, hapd, sta);
 528         accounting_sta_stop(hapd, sta);
 529         ieee802_1x_free_station(sta);
 530
 531         mlme_disassociate_indication(hapd, sta, reason);
 532 }
 533
 534
 535 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 536                            u16 reason)
 537 {
 538         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 539                    hapd->conf->iface, MAC2STR(sta->addr));
 540         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
 541         ap_sta_remove(hapd, sta);
 542         sta->timeout_next = STA_REMOVE;
 543         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 544         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 545                                ap_handle_timer, hapd, sta);
 546         accounting_sta_stop(hapd, sta);
 547         ieee802_1x_free_station(sta);
 548
 549         mlme_deauthenticate_indication(hapd, sta, reason);
 550 }
 551
 552
 553 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta,
 554                      int old_vlanid)
 555 {
 556 #ifndef CONFIG_NO_VLAN
 557         const char *iface;
 558         struct hostapd_vlan *vlan = NULL;
 559         int ret;
 560
 561         /*
 562          * Do not proceed furthur if the vlan id remains same. We do not want
 563          * duplicate dynamic vlan entries.
 564          */
 565         if (sta->vlan_id == old_vlanid)
 566                 return 0;
 567
 568         /*
 569          * During 1x reauth, if the vlan id changes, then remove the old id and
 570          * proceed furthur to add the new one.
 571          */
 572         if (old_vlanid > 0)
 573                 vlan_remove_dynamic(hapd, old_vlanid);
 574
 575         iface = hapd->conf->iface;
 576         if (sta->ssid->vlan[0])
 577                 iface = sta->ssid->vlan;
 578
 579         if (sta->ssid->dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 580                 sta->vlan_id = 0;
 581         else if (sta->vlan_id > 0) {
 582                 vlan = hapd->conf->vlan;
 583                 while (vlan) {
 584                         if (vlan->vlan_id == sta->vlan_id ||
 585                             vlan->vlan_id == VLAN_ID_WILDCARD) {
 586                                 iface = vlan->ifname;
 587                                 break;
 588                         }
 589                         vlan = vlan->next;
 590                 }
 591         }
 592
 593         if (sta->vlan_id > 0 && vlan == NULL) {
 594                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 595                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 596                                "binding station to (vlan_id=%d)",
 597                                sta->vlan_id);
 598                 return -1;
 599         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 600                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 601                 if (vlan == NULL) {
 602                         hostapd_logger(hapd, sta->addr,
 603                                        HOSTAPD_MODULE_IEEE80211,
 604                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 605                                        "dynamic VLAN interface for vlan_id=%d",
 606                                        sta->vlan_id);
 607                         return -1;
 608                 }
 609
 610                 iface = vlan->ifname;
 611                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 612                         hostapd_logger(hapd, sta->addr,
 613                                        HOSTAPD_MODULE_IEEE80211,
 614                                        HOSTAPD_LEVEL_DEBUG, "could not "
 615                                        "configure encryption for dynamic VLAN "
 616                                        "interface for vlan_id=%d",
 617                                        sta->vlan_id);
 618                 }
 619
 620                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 621                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 622                                "interface '%s'", iface);
 623         } else if (vlan && vlan->vlan_id == sta->vlan_id) {
 624                 if (sta->vlan_id > 0) {
 625                         vlan->dynamic_vlan++;
 626                         hostapd_logger(hapd, sta->addr,
 627                                        HOSTAPD_MODULE_IEEE80211,
 628                                        HOSTAPD_LEVEL_DEBUG, "updated existing "
 629                                        "dynamic VLAN interface '%s'", iface);
 630                 }
 631
 632                 /*
 633                  * Update encryption configuration for statically generated
 634                  * VLAN interface. This is only used for static WEP
 635                  * configuration for the case where hostapd did not yet know
 636                  * which keys are to be used when the interface was added.
 637                  */
 638                 if (vlan_setup_encryption_dyn(hapd, sta->ssid, iface) != 0) {
 639                         hostapd_logger(hapd, sta->addr,
 640                                        HOSTAPD_MODULE_IEEE80211,
 641                                        HOSTAPD_LEVEL_DEBUG, "could not "
 642                                        "configure encryption for VLAN "
 643                                        "interface for vlan_id=%d",
 644                                        sta->vlan_id);
 645                 }
 646         }
 647
 648         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 649                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 650                        "'%s'", iface);
 651
 652         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 653                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 654
 655         ret = hapd->drv.set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 656         if (ret < 0) {
 657                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 658                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 659                                "entry to vlan_id=%d", sta->vlan_id);
 660         }
 661         return ret;
 662 #else /* CONFIG_NO_VLAN */
 663         return 0;
 664 #endif /* CONFIG_NO_VLAN */
 665 }
 666
 667
 668 #ifdef CONFIG_IEEE80211W
 669
 670 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 671 {
 672         u32 tu;
 673         struct os_time now, passed;
 674         os_get_time(&now);
 675         os_time_sub(&now, &sta->sa_query_start, &passed);
 676         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 677         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 678                 hostapd_logger(hapd, sta->addr,
 679                                HOSTAPD_MODULE_IEEE80211,
 680                                HOSTAPD_LEVEL_DEBUG,
 681                                "association SA Query timed out");
 682                 sta->sa_query_timed_out = 1;
 683                 os_free(sta->sa_query_trans_id);
 684                 sta->sa_query_trans_id = NULL;
 685                 sta->sa_query_count = 0;
 686                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 687                 return 1;
 688         }
 689
 690         return 0;
 691 }
 692
 693
 694 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 695 {
 696         struct hostapd_data *hapd = eloop_ctx;
 697         struct sta_info *sta = timeout_ctx;
 698         unsigned int timeout, sec, usec;
 699         u8 *trans_id, *nbuf;
 700
 701         if (sta->sa_query_count > 0 &&
 702             ap_check_sa_query_timeout(hapd, sta))
 703                 return;
 704
 705         nbuf = os_realloc(sta->sa_query_trans_id,
 706                           (sta->sa_query_count + 1) * WLAN_SA_QUERY_TR_ID_LEN);
 707         if (nbuf == NULL)
 708                 return;
 709         if (sta->sa_query_count == 0) {
 710                 /* Starting a new SA Query procedure */
 711                 os_get_time(&sta->sa_query_start);
 712         }
 713         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 714         sta->sa_query_trans_id = nbuf;
 715         sta->sa_query_count++;
 716
 717         os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN);
 718
 719         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 720         sec = ((timeout / 1000) * 1024) / 1000;
 721         usec = (timeout % 1000) * 1024;
 722         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 723
 724         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 725                        HOSTAPD_LEVEL_DEBUG,
 726                        "association SA Query attempt %d", sta->sa_query_count);
 727
 728 #ifdef NEED_AP_MLME
 729         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 730 #endif /* NEED_AP_MLME */
 731 }
 732
 733
 734 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 735 {
 736         ap_sa_query_timer(hapd, sta);
 737 }
 738
 739
 740 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 741 {
 742         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 743         os_free(sta->sa_query_trans_id);
 744         sta->sa_query_trans_id = NULL;
 745         sta->sa_query_count = 0;
 746 }
 747
 748 #endif /* CONFIG_IEEE80211W */
 749
 750
 751 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
 752                        const u8 *addr, u16 reason)
 753 {
 754
 755         if (sta == NULL && addr)
 756                 sta = ap_get_sta(hapd, addr);
 757
 758         if (addr)
 759                 hapd->drv.sta_deauth(hapd, addr, reason);
 760
 761         if (sta == NULL)
 762                 return;
 763         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_AUTHORIZED);
 764         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 765         eloop_register_timeout(0, 0, ap_handle_timer, hapd, sta);
 766         sta->timeout_next = STA_REMOVE;
 767 }