src/ap/sta_info.c

   1 /*
   2  * hostapd / Station table
   3  * Copyright (c) 2002-2013, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "common/ieee802_11_defs.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/sae.h"
  16 #include "radius/radius.h"
  17 #include "radius/radius_client.h"
  18 #include "p2p/p2p.h"
  19 #include "fst/fst.h"
  20 #include "hostapd.h"
  21 #include "accounting.h"
  22 #include "ieee802_1x.h"
  23 #include "ieee802_11.h"
  24 #include "ieee802_11_auth.h"
  25 #include "wpa_auth.h"
  26 #include "preauth_auth.h"
  27 #include "ap_config.h"
  28 #include "beacon.h"
  29 #include "ap_mlme.h"
  30 #include "vlan_init.h"
  31 #include "p2p_hostapd.h"
  32 #include "ap_drv_ops.h"
  33 #include "gas_serv.h"
  34 #include "wnm_ap.h"
  35 #include "ndisc_snoop.h"
  36 #include "sta_info.h"
  37
  38 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
  39                                        struct sta_info *sta);
  40 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx);
  41 static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx);
  42 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  43 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx);
  44 #ifdef CONFIG_IEEE80211W
  45 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx);
  46 #endif /* CONFIG_IEEE80211W */
  47 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta);
  48
  49 int ap_for_each_sta(struct hostapd_data *hapd,
  50                     int (*cb)(struct hostapd_data *hapd, struct sta_info *sta,
  51                               void *ctx),
  52                     void *ctx)
  53 {
  54         struct sta_info *sta;
  55
  56         for (sta = hapd->sta_list; sta; sta = sta->next) {
  57                 if (cb(hapd, sta, ctx))
  58                         return 1;
  59         }
  60
  61         return 0;
  62 }
  63
  64
  65 struct sta_info * ap_get_sta(struct hostapd_data *hapd, const u8 *sta)
  66 {
  67         struct sta_info *s;
  68
  69         s = hapd->sta_hash[STA_HASH(sta)];
  70         while (s != NULL && os_memcmp(s->addr, sta, 6) != 0)
  71                 s = s->hnext;
  72         return s;
  73 }
  74
  75
  76 #ifdef CONFIG_P2P
  77 struct sta_info * ap_get_sta_p2p(struct hostapd_data *hapd, const u8 *addr)
  78 {
  79         struct sta_info *sta;
  80
  81         for (sta = hapd->sta_list; sta; sta = sta->next) {
  82                 const u8 *p2p_dev_addr;
  83
  84                 if (sta->p2p_ie == NULL)
  85                         continue;
  86
  87                 p2p_dev_addr = p2p_get_go_dev_addr(sta->p2p_ie);
  88                 if (p2p_dev_addr == NULL)
  89                         continue;
  90
  91                 if (os_memcmp(p2p_dev_addr, addr, ETH_ALEN) == 0)
  92                         return sta;
  93         }
  94
  95         return NULL;
  96 }
  97 #endif /* CONFIG_P2P */
  98
  99
 100 static void ap_sta_list_del(struct hostapd_data *hapd, struct sta_info *sta)
 101 {
 102         struct sta_info *tmp;
 103
 104         if (hapd->sta_list == sta) {
 105                 hapd->sta_list = sta->next;
 106                 return;
 107         }
 108
 109         tmp = hapd->sta_list;
 110         while (tmp != NULL && tmp->next != sta)
 111                 tmp = tmp->next;
 112         if (tmp == NULL) {
 113                 wpa_printf(MSG_DEBUG, "Could not remove STA " MACSTR " from "
 114                            "list.", MAC2STR(sta->addr));
 115         } else
 116                 tmp->next = sta->next;
 117 }
 118
 119
 120 void ap_sta_hash_add(struct hostapd_data *hapd, struct sta_info *sta)
 121 {
 122         sta->hnext = hapd->sta_hash[STA_HASH(sta->addr)];
 123         hapd->sta_hash[STA_HASH(sta->addr)] = sta;
 124 }
 125
 126
 127 static void ap_sta_hash_del(struct hostapd_data *hapd, struct sta_info *sta)
 128 {
 129         struct sta_info *s;
 130
 131         s = hapd->sta_hash[STA_HASH(sta->addr)];
 132         if (s == NULL) return;
 133         if (os_memcmp(s->addr, sta->addr, 6) == 0) {
 134                 hapd->sta_hash[STA_HASH(sta->addr)] = s->hnext;
 135                 return;
 136         }
 137
 138         while (s->hnext != NULL &&
 139                os_memcmp(s->hnext->addr, sta->addr, ETH_ALEN) != 0)
 140                 s = s->hnext;
 141         if (s->hnext != NULL)
 142                 s->hnext = s->hnext->hnext;
 143         else
 144                 wpa_printf(MSG_DEBUG, "AP: could not remove STA " MACSTR
 145                            " from hash table", MAC2STR(sta->addr));
 146 }
 147
 148
 149 void ap_sta_ip6addr_del(struct hostapd_data *hapd, struct sta_info *sta)
 150 {
 151         sta_ip6addr_del(hapd, sta);
 152 }
 153
 154
 155 void ap_free_sta(struct hostapd_data *hapd, struct sta_info *sta)
 156 {
 157         int set_beacon = 0;
 158
 159         accounting_sta_stop(hapd, sta);
 160
 161         /* just in case */
 162         ap_sta_set_authorized(hapd, sta, 0);
 163
 164         if (sta->flags & WLAN_STA_WDS)
 165                 hostapd_set_wds_sta(hapd, NULL, sta->addr, sta->aid, 0);
 166
 167         if (sta->ipaddr)
 168                 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
 169         ap_sta_ip6addr_del(hapd, sta);
 170
 171         if (!hapd->iface->driver_ap_teardown &&
 172             !(sta->flags & WLAN_STA_PREAUTH))
 173                 hostapd_drv_sta_remove(hapd, sta->addr);
 174
 175         ap_sta_hash_del(hapd, sta);
 176         ap_sta_list_del(hapd, sta);
 177
 178         if (sta->aid > 0)
 179                 hapd->sta_aid[(sta->aid - 1) / 32] &=
 180                         ~BIT((sta->aid - 1) % 32);
 181
 182         hapd->num_sta--;
 183         if (sta->nonerp_set) {
 184                 sta->nonerp_set = 0;
 185                 hapd->iface->num_sta_non_erp--;
 186                 if (hapd->iface->num_sta_non_erp == 0)
 187                         set_beacon++;
 188         }
 189
 190         if (sta->no_short_slot_time_set) {
 191                 sta->no_short_slot_time_set = 0;
 192                 hapd->iface->num_sta_no_short_slot_time--;
 193                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 194                     && hapd->iface->num_sta_no_short_slot_time == 0)
 195                         set_beacon++;
 196         }
 197
 198         if (sta->no_short_preamble_set) {
 199                 sta->no_short_preamble_set = 0;
 200                 hapd->iface->num_sta_no_short_preamble--;
 201                 if (hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G
 202                     && hapd->iface->num_sta_no_short_preamble == 0)
 203                         set_beacon++;
 204         }
 205
 206         if (sta->no_ht_gf_set) {
 207                 sta->no_ht_gf_set = 0;
 208                 hapd->iface->num_sta_ht_no_gf--;
 209         }
 210
 211         if (sta->no_ht_set) {
 212                 sta->no_ht_set = 0;
 213                 hapd->iface->num_sta_no_ht--;
 214         }
 215
 216         if (sta->ht_20mhz_set) {
 217                 sta->ht_20mhz_set = 0;
 218                 hapd->iface->num_sta_ht_20mhz--;
 219         }
 220
 221 #ifdef CONFIG_IEEE80211N
 222         ht40_intolerant_remove(hapd->iface, sta);
 223 #endif /* CONFIG_IEEE80211N */
 224
 225 #ifdef CONFIG_P2P
 226         if (sta->no_p2p_set) {
 227                 sta->no_p2p_set = 0;
 228                 hapd->num_sta_no_p2p--;
 229                 if (hapd->num_sta_no_p2p == 0)
 230                         hostapd_p2p_non_p2p_sta_disconnected(hapd);
 231         }
 232 #endif /* CONFIG_P2P */
 233
 234 #if defined(NEED_AP_MLME) && defined(CONFIG_IEEE80211N)
 235         if (hostapd_ht_operation_update(hapd->iface) > 0)
 236                 set_beacon++;
 237 #endif /* NEED_AP_MLME && CONFIG_IEEE80211N */
 238
 239 #ifdef CONFIG_MESH
 240         if (hapd->mesh_sta_free_cb)
 241                 hapd->mesh_sta_free_cb(sta);
 242 #endif /* CONFIG_MESH */
 243
 244         if (set_beacon)
 245                 ieee802_11_set_beacons(hapd->iface);
 246
 247         wpa_printf(MSG_DEBUG, "%s: cancel ap_handle_timer for " MACSTR,
 248                    __func__, MAC2STR(sta->addr));
 249         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 250         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 251         eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta);
 252         ap_sta_clear_disconnect_timeouts(hapd, sta);
 253         sae_clear_retransmit_timer(hapd, sta);
 254
 255         ieee802_1x_free_station(hapd, sta);
 256         wpa_auth_sta_deinit(sta->wpa_sm);
 257         rsn_preauth_free_station(hapd, sta);
 258 #ifndef CONFIG_NO_RADIUS
 259         if (hapd->radius)
 260                 radius_client_flush_auth(hapd->radius, sta->addr);
 261 #endif /* CONFIG_NO_RADIUS */
 262
 263 #ifndef CONFIG_NO_VLAN
 264         /*
 265          * sta->wpa_sm->group needs to be released before so that
 266          * vlan_remove_dynamic() can check that no stations are left on the
 267          * AP_VLAN netdev.
 268          */
 269         if (sta->vlan_id_bound) {
 270                 /*
 271                  * Need to remove the STA entry before potentially removing the
 272                  * VLAN.
 273                  */
 274                 if (hapd->iface->driver_ap_teardown &&
 275                     !(sta->flags & WLAN_STA_PREAUTH))
 276                         hostapd_drv_sta_remove(hapd, sta->addr);
 277                 vlan_remove_dynamic(hapd, sta->vlan_id_bound);
 278         }
 279 #endif /* CONFIG_NO_VLAN */
 280
 281         os_free(sta->challenge);
 282
 283 #ifdef CONFIG_IEEE80211W
 284         os_free(sta->sa_query_trans_id);
 285         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 286 #endif /* CONFIG_IEEE80211W */
 287
 288 #ifdef CONFIG_P2P
 289         p2p_group_notif_disassoc(hapd->p2p_group, sta->addr);
 290 #endif /* CONFIG_P2P */
 291
 292 #ifdef CONFIG_INTERWORKING
 293         if (sta->gas_dialog) {
 294                 int i;
 295                 for (i = 0; i < GAS_DIALOG_MAX; i++)
 296                         gas_serv_dialog_clear(&sta->gas_dialog[i]);
 297                 os_free(sta->gas_dialog);
 298         }
 299 #endif /* CONFIG_INTERWORKING */
 300
 301         wpabuf_free(sta->wps_ie);
 302         wpabuf_free(sta->p2p_ie);
 303         wpabuf_free(sta->hs20_ie);
 304 #ifdef CONFIG_FST
 305         wpabuf_free(sta->mb_ies);
 306 #endif /* CONFIG_FST */
 307
 308         os_free(sta->ht_capabilities);
 309         os_free(sta->vht_capabilities);
 310         hostapd_free_psk_list(sta->psk);
 311         os_free(sta->identity);
 312         os_free(sta->radius_cui);
 313         os_free(sta->remediation_url);
 314         wpabuf_free(sta->hs20_deauth_req);
 315         os_free(sta->hs20_session_info_url);
 316
 317 #ifdef CONFIG_SAE
 318         sae_clear_data(sta->sae);
 319         os_free(sta->sae);
 320 #endif /* CONFIG_SAE */
 321
 322         os_free(sta);
 323 }
 324
 325
 326 void hostapd_free_stas(struct hostapd_data *hapd)
 327 {
 328         struct sta_info *sta, *prev;
 329
 330         sta = hapd->sta_list;
 331
 332         while (sta) {
 333                 prev = sta;
 334                 if (sta->flags & WLAN_STA_AUTH) {
 335                         mlme_deauthenticate_indication(
 336                                 hapd, sta, WLAN_REASON_UNSPECIFIED);
 337                 }
 338                 sta = sta->next;
 339                 wpa_printf(MSG_DEBUG, "Removing station " MACSTR,
 340                            MAC2STR(prev->addr));
 341                 ap_free_sta(hapd, prev);
 342         }
 343 }
 344
 345
 346 /**
 347  * ap_handle_timer - Per STA timer handler
 348  * @eloop_ctx: struct hostapd_data *
 349  * @timeout_ctx: struct sta_info *
 350  *
 351  * This function is called to check station activity and to remove inactive
 352  * stations.
 353  */
 354 void ap_handle_timer(void *eloop_ctx, void *timeout_ctx)
 355 {
 356         struct hostapd_data *hapd = eloop_ctx;
 357         struct sta_info *sta = timeout_ctx;
 358         unsigned long next_time = 0;
 359         int reason;
 360
 361         wpa_printf(MSG_DEBUG, "%s: %s: " MACSTR " flags=0x%x timeout_next=%d",
 362                    hapd->conf->iface, __func__, MAC2STR(sta->addr), sta->flags,
 363                    sta->timeout_next);
 364         if (sta->timeout_next == STA_REMOVE) {
 365                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 366                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 367                                "local deauth request");
 368                 ap_free_sta(hapd, sta);
 369                 return;
 370         }
 371
 372         if ((sta->flags & WLAN_STA_ASSOC) &&
 373             (sta->timeout_next == STA_NULLFUNC ||
 374              sta->timeout_next == STA_DISASSOC)) {
 375                 int inactive_sec;
 376                 /*
 377                  * Add random value to timeout so that we don't end up bouncing
 378                  * all stations at the same time if we have lots of associated
 379                  * stations that are idle (but keep re-associating).
 380                  */
 381                 int fuzz = os_random() % 20;
 382                 inactive_sec = hostapd_drv_get_inact_sec(hapd, sta->addr);
 383                 if (inactive_sec == -1) {
 384                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 385                                 "Check inactivity: Could not "
 386                                 "get station info from kernel driver for "
 387                                 MACSTR, MAC2STR(sta->addr));
 388                         /*
 389                          * The driver may not support this functionality.
 390                          * Anyway, try again after the next inactivity timeout,
 391                          * but do not disconnect the station now.
 392                          */
 393                         next_time = hapd->conf->ap_max_inactivity + fuzz;
 394                 } else if (inactive_sec == -ENOENT) {
 395                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 396                                 "Station " MACSTR " has lost its driver entry",
 397                                 MAC2STR(sta->addr));
 398
 399                         /* Avoid sending client probe on removed client */
 400                         sta->timeout_next = STA_DISASSOC;
 401                         goto skip_poll;
 402                 } else if (inactive_sec < hapd->conf->ap_max_inactivity) {
 403                         /* station activity detected; reset timeout state */
 404                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 405                                 "Station " MACSTR " has been active %is ago",
 406                                 MAC2STR(sta->addr), inactive_sec);
 407                         sta->timeout_next = STA_NULLFUNC;
 408                         next_time = hapd->conf->ap_max_inactivity + fuzz -
 409                                 inactive_sec;
 410                 } else {
 411                         wpa_msg(hapd->msg_ctx, MSG_DEBUG,
 412                                 "Station " MACSTR " has been "
 413                                 "inactive too long: %d sec, max allowed: %d",
 414                                 MAC2STR(sta->addr), inactive_sec,
 415                                 hapd->conf->ap_max_inactivity);
 416
 417                         if (hapd->conf->skip_inactivity_poll)
 418                                 sta->timeout_next = STA_DISASSOC;
 419                 }
 420         }
 421
 422         if ((sta->flags & WLAN_STA_ASSOC) &&
 423             sta->timeout_next == STA_DISASSOC &&
 424             !(sta->flags & WLAN_STA_PENDING_POLL) &&
 425             !hapd->conf->skip_inactivity_poll) {
 426                 wpa_msg(hapd->msg_ctx, MSG_DEBUG, "Station " MACSTR
 427                         " has ACKed data poll", MAC2STR(sta->addr));
 428                 /* data nullfunc frame poll did not produce TX errors; assume
 429                  * station ACKed it */
 430                 sta->timeout_next = STA_NULLFUNC;
 431                 next_time = hapd->conf->ap_max_inactivity;
 432         }
 433
 434 skip_poll:
 435         if (next_time) {
 436                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 437                            "for " MACSTR " (%lu seconds)",
 438                            __func__, MAC2STR(sta->addr), next_time);
 439                 eloop_register_timeout(next_time, 0, ap_handle_timer, hapd,
 440                                        sta);
 441                 return;
 442         }
 443
 444         if (sta->timeout_next == STA_NULLFUNC &&
 445             (sta->flags & WLAN_STA_ASSOC)) {
 446                 wpa_printf(MSG_DEBUG, "  Polling STA");
 447                 sta->flags |= WLAN_STA_PENDING_POLL;
 448                 hostapd_drv_poll_client(hapd, hapd->own_addr, sta->addr,
 449                                         sta->flags & WLAN_STA_WMM);
 450         } else if (sta->timeout_next != STA_REMOVE) {
 451                 int deauth = sta->timeout_next == STA_DEAUTH;
 452
 453                 wpa_dbg(hapd->msg_ctx, MSG_DEBUG,
 454                         "Timeout, sending %s info to STA " MACSTR,
 455                         deauth ? "deauthentication" : "disassociation",
 456                         MAC2STR(sta->addr));
 457
 458                 if (deauth) {
 459                         hostapd_drv_sta_deauth(
 460                                 hapd, sta->addr,
 461                                 WLAN_REASON_PREV_AUTH_NOT_VALID);
 462                 } else {
 463                         reason = (sta->timeout_next == STA_DISASSOC) ?
 464                                 WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 465                                 WLAN_REASON_PREV_AUTH_NOT_VALID;
 466
 467                         hostapd_drv_sta_disassoc(hapd, sta->addr, reason);
 468                 }
 469         }
 470
 471         switch (sta->timeout_next) {
 472         case STA_NULLFUNC:
 473                 sta->timeout_next = STA_DISASSOC;
 474                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 475                            "for " MACSTR " (%d seconds - AP_DISASSOC_DELAY)",
 476                            __func__, MAC2STR(sta->addr), AP_DISASSOC_DELAY);
 477                 eloop_register_timeout(AP_DISASSOC_DELAY, 0, ap_handle_timer,
 478                                        hapd, sta);
 479                 break;
 480         case STA_DISASSOC:
 481         case STA_DISASSOC_FROM_CLI:
 482                 ap_sta_set_authorized(hapd, sta, 0);
 483                 sta->flags &= ~WLAN_STA_ASSOC;
 484                 ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 485                 if (!sta->acct_terminate_cause)
 486                         sta->acct_terminate_cause =
 487                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 488                 accounting_sta_stop(hapd, sta);
 489                 ieee802_1x_free_station(hapd, sta);
 490                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 491                                HOSTAPD_LEVEL_INFO, "disassociated due to "
 492                                "inactivity");
 493                 reason = (sta->timeout_next == STA_DISASSOC) ?
 494                         WLAN_REASON_DISASSOC_DUE_TO_INACTIVITY :
 495                         WLAN_REASON_PREV_AUTH_NOT_VALID;
 496                 sta->timeout_next = STA_DEAUTH;
 497                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 498                            "for " MACSTR " (%d seconds - AP_DEAUTH_DELAY)",
 499                            __func__, MAC2STR(sta->addr), AP_DEAUTH_DELAY);
 500                 eloop_register_timeout(AP_DEAUTH_DELAY, 0, ap_handle_timer,
 501                                        hapd, sta);
 502                 mlme_disassociate_indication(hapd, sta, reason);
 503                 break;
 504         case STA_DEAUTH:
 505         case STA_REMOVE:
 506                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 507                                HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 508                                "inactivity (timer DEAUTH/REMOVE)");
 509                 if (!sta->acct_terminate_cause)
 510                         sta->acct_terminate_cause =
 511                                 RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT;
 512                 mlme_deauthenticate_indication(
 513                         hapd, sta,
 514                         WLAN_REASON_PREV_AUTH_NOT_VALID);
 515                 ap_free_sta(hapd, sta);
 516                 break;
 517         }
 518 }
 519
 520
 521 static void ap_handle_session_timer(void *eloop_ctx, void *timeout_ctx)
 522 {
 523         struct hostapd_data *hapd = eloop_ctx;
 524         struct sta_info *sta = timeout_ctx;
 525
 526         wpa_printf(MSG_DEBUG, "%s: Session timer for STA " MACSTR,
 527                    hapd->conf->iface, MAC2STR(sta->addr));
 528         if (!(sta->flags & WLAN_STA_AUTH)) {
 529                 if (sta->flags & WLAN_STA_GAS) {
 530                         wpa_printf(MSG_DEBUG, "GAS: Remove temporary STA "
 531                                    "entry " MACSTR, MAC2STR(sta->addr));
 532                         ap_free_sta(hapd, sta);
 533                 }
 534                 return;
 535         }
 536
 537         hostapd_drv_sta_deauth(hapd, sta->addr,
 538                                WLAN_REASON_PREV_AUTH_NOT_VALID);
 539         mlme_deauthenticate_indication(hapd, sta,
 540                                        WLAN_REASON_PREV_AUTH_NOT_VALID);
 541         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 542                        HOSTAPD_LEVEL_INFO, "deauthenticated due to "
 543                        "session timeout");
 544         sta->acct_terminate_cause =
 545                 RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT;
 546         ap_free_sta(hapd, sta);
 547 }
 548
 549
 550 void ap_sta_replenish_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 551                               u32 session_timeout)
 552 {
 553         if (eloop_replenish_timeout(session_timeout, 0,
 554                                     ap_handle_session_timer, hapd, sta) == 1) {
 555                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 556                                HOSTAPD_LEVEL_DEBUG, "setting session timeout "
 557                                "to %d seconds", session_timeout);
 558         }
 559 }
 560
 561
 562 void ap_sta_session_timeout(struct hostapd_data *hapd, struct sta_info *sta,
 563                             u32 session_timeout)
 564 {
 565         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 566                        HOSTAPD_LEVEL_DEBUG, "setting session timeout to %d "
 567                        "seconds", session_timeout);
 568         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 569         eloop_register_timeout(session_timeout, 0, ap_handle_session_timer,
 570                                hapd, sta);
 571 }
 572
 573
 574 void ap_sta_no_session_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 575 {
 576         eloop_cancel_timeout(ap_handle_session_timer, hapd, sta);
 577 }
 578
 579
 580 static void ap_handle_session_warning_timer(void *eloop_ctx, void *timeout_ctx)
 581 {
 582 #ifdef CONFIG_WNM
 583         struct hostapd_data *hapd = eloop_ctx;
 584         struct sta_info *sta = timeout_ctx;
 585
 586         wpa_printf(MSG_DEBUG, "%s: WNM: Session warning time reached for "
 587                    MACSTR, hapd->conf->iface, MAC2STR(sta->addr));
 588         if (sta->hs20_session_info_url == NULL)
 589                 return;
 590
 591         wnm_send_ess_disassoc_imminent(hapd, sta, sta->hs20_session_info_url,
 592                                        sta->hs20_disassoc_timer);
 593 #endif /* CONFIG_WNM */
 594 }
 595
 596
 597 void ap_sta_session_warning_timeout(struct hostapd_data *hapd,
 598                                     struct sta_info *sta, int warning_time)
 599 {
 600         eloop_cancel_timeout(ap_handle_session_warning_timer, hapd, sta);
 601         eloop_register_timeout(warning_time, 0, ap_handle_session_warning_timer,
 602                                hapd, sta);
 603 }
 604
 605
 606 struct sta_info * ap_sta_add(struct hostapd_data *hapd, const u8 *addr)
 607 {
 608         struct sta_info *sta;
 609
 610         sta = ap_get_sta(hapd, addr);
 611         if (sta)
 612                 return sta;
 613
 614         wpa_printf(MSG_DEBUG, "  New STA");
 615         if (hapd->num_sta >= hapd->conf->max_num_sta) {
 616                 /* FIX: might try to remove some old STAs first? */
 617                 wpa_printf(MSG_DEBUG, "no more room for new STAs (%d/%d)",
 618                            hapd->num_sta, hapd->conf->max_num_sta);
 619                 return NULL;
 620         }
 621
 622         sta = os_zalloc(sizeof(struct sta_info));
 623         if (sta == NULL) {
 624                 wpa_printf(MSG_ERROR, "malloc failed");
 625                 return NULL;
 626         }
 627         sta->acct_interim_interval = hapd->conf->acct_interim_interval;
 628         accounting_sta_get_id(hapd, sta);
 629
 630         if (!(hapd->iface->drv_flags & WPA_DRIVER_FLAGS_INACTIVITY_TIMER)) {
 631                 wpa_printf(MSG_DEBUG, "%s: register ap_handle_timer timeout "
 632                            "for " MACSTR " (%d seconds - ap_max_inactivity)",
 633                            __func__, MAC2STR(addr),
 634                            hapd->conf->ap_max_inactivity);
 635                 eloop_register_timeout(hapd->conf->ap_max_inactivity, 0,
 636                                        ap_handle_timer, hapd, sta);
 637         }
 638
 639         /* initialize STA info data */
 640         os_memcpy(sta->addr, addr, ETH_ALEN);
 641         sta->next = hapd->sta_list;
 642         hapd->sta_list = sta;
 643         hapd->num_sta++;
 644         ap_sta_hash_add(hapd, sta);
 645         ap_sta_remove_in_other_bss(hapd, sta);
 646         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 647         dl_list_init(&sta->ip6addr);
 648
 649         return sta;
 650 }
 651
 652
 653 static int ap_sta_remove(struct hostapd_data *hapd, struct sta_info *sta)
 654 {
 655         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
 656
 657         if (sta->ipaddr)
 658                 hostapd_drv_br_delete_ip_neigh(hapd, 4, (u8 *) &sta->ipaddr);
 659         ap_sta_ip6addr_del(hapd, sta);
 660
 661         wpa_printf(MSG_DEBUG, "%s: Removing STA " MACSTR " from kernel driver",
 662                    hapd->conf->iface, MAC2STR(sta->addr));
 663         if (hostapd_drv_sta_remove(hapd, sta->addr) &&
 664             sta->flags & WLAN_STA_ASSOC) {
 665                 wpa_printf(MSG_DEBUG, "%s: Could not remove station " MACSTR
 666                            " from kernel driver",
 667                            hapd->conf->iface, MAC2STR(sta->addr));
 668                 return -1;
 669         }
 670         return 0;
 671 }
 672
 673
 674 static void ap_sta_remove_in_other_bss(struct hostapd_data *hapd,
 675                                        struct sta_info *sta)
 676 {
 677         struct hostapd_iface *iface = hapd->iface;
 678         size_t i;
 679
 680         for (i = 0; i < iface->num_bss; i++) {
 681                 struct hostapd_data *bss = iface->bss[i];
 682                 struct sta_info *sta2;
 683                 /* bss should always be set during operation, but it may be
 684                  * NULL during reconfiguration. Assume the STA is not
 685                  * associated to another BSS in that case to avoid NULL pointer
 686                  * dereferences. */
 687                 if (bss == hapd || bss == NULL)
 688                         continue;
 689                 sta2 = ap_get_sta(bss, sta->addr);
 690                 if (!sta2)
 691                         continue;
 692
 693                 wpa_printf(MSG_DEBUG, "%s: disconnect old STA " MACSTR
 694                            " association from another BSS %s",
 695                            hapd->conf->iface, MAC2STR(sta2->addr),
 696                            bss->conf->iface);
 697                 ap_sta_disconnect(bss, sta2, sta2->addr,
 698                                   WLAN_REASON_PREV_AUTH_NOT_VALID);
 699         }
 700 }
 701
 702
 703 static void ap_sta_disassoc_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 704 {
 705         struct hostapd_data *hapd = eloop_ctx;
 706         struct sta_info *sta = timeout_ctx;
 707
 708         wpa_printf(MSG_DEBUG, "%s: Disassociation callback for STA " MACSTR,
 709                    hapd->conf->iface, MAC2STR(sta->addr));
 710         ap_sta_remove(hapd, sta);
 711         mlme_disassociate_indication(hapd, sta, sta->disassoc_reason);
 712 }
 713
 714
 715 void ap_sta_disassociate(struct hostapd_data *hapd, struct sta_info *sta,
 716                          u16 reason)
 717 {
 718         wpa_printf(MSG_DEBUG, "%s: disassociate STA " MACSTR,
 719                    hapd->conf->iface, MAC2STR(sta->addr));
 720         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 721         sta->flags &= ~(WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 722         ap_sta_set_authorized(hapd, sta, 0);
 723         sta->timeout_next = STA_DEAUTH;
 724         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 725                    "for " MACSTR " (%d seconds - "
 726                    "AP_MAX_INACTIVITY_AFTER_DISASSOC)",
 727                    __func__, MAC2STR(sta->addr),
 728                    AP_MAX_INACTIVITY_AFTER_DISASSOC);
 729         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 730         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DISASSOC, 0,
 731                                ap_handle_timer, hapd, sta);
 732         accounting_sta_stop(hapd, sta);
 733         ieee802_1x_free_station(hapd, sta);
 734
 735         sta->disassoc_reason = reason;
 736         sta->flags |= WLAN_STA_PENDING_DISASSOC_CB;
 737         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
 738         eloop_register_timeout(hapd->iface->drv_flags &
 739                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 740                                ap_sta_disassoc_cb_timeout, hapd, sta);
 741 }
 742
 743
 744 static void ap_sta_deauth_cb_timeout(void *eloop_ctx, void *timeout_ctx)
 745 {
 746         struct hostapd_data *hapd = eloop_ctx;
 747         struct sta_info *sta = timeout_ctx;
 748
 749         wpa_printf(MSG_DEBUG, "%s: Deauthentication callback for STA " MACSTR,
 750                    hapd->conf->iface, MAC2STR(sta->addr));
 751         ap_sta_remove(hapd, sta);
 752         mlme_deauthenticate_indication(hapd, sta, sta->deauth_reason);
 753 }
 754
 755
 756 void ap_sta_deauthenticate(struct hostapd_data *hapd, struct sta_info *sta,
 757                            u16 reason)
 758 {
 759         wpa_printf(MSG_DEBUG, "%s: deauthenticate STA " MACSTR,
 760                    hapd->conf->iface, MAC2STR(sta->addr));
 761         sta->last_seq_ctrl = WLAN_INVALID_MGMT_SEQ;
 762         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC | WLAN_STA_ASSOC_REQ_OK);
 763         ap_sta_set_authorized(hapd, sta, 0);
 764         sta->timeout_next = STA_REMOVE;
 765         wpa_printf(MSG_DEBUG, "%s: reschedule ap_handle_timer timeout "
 766                    "for " MACSTR " (%d seconds - "
 767                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
 768                    __func__, MAC2STR(sta->addr),
 769                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
 770         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
 771         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
 772                                ap_handle_timer, hapd, sta);
 773         accounting_sta_stop(hapd, sta);
 774         ieee802_1x_free_station(hapd, sta);
 775
 776         sta->deauth_reason = reason;
 777         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
 778         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
 779         eloop_register_timeout(hapd->iface->drv_flags &
 780                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
 781                                ap_sta_deauth_cb_timeout, hapd, sta);
 782 }
 783
 784
 785 #ifdef CONFIG_WPS
 786 int ap_sta_wps_cancel(struct hostapd_data *hapd,
 787                       struct sta_info *sta, void *ctx)
 788 {
 789         if (sta && (sta->flags & WLAN_STA_WPS)) {
 790                 ap_sta_deauthenticate(hapd, sta,
 791                                       WLAN_REASON_PREV_AUTH_NOT_VALID);
 792                 wpa_printf(MSG_DEBUG, "WPS: %s: Deauth sta=" MACSTR,
 793                            __func__, MAC2STR(sta->addr));
 794                 return 1;
 795         }
 796
 797         return 0;
 798 }
 799 #endif /* CONFIG_WPS */
 800
 801
 802 int ap_sta_bind_vlan(struct hostapd_data *hapd, struct sta_info *sta)
 803 {
 804 #ifndef CONFIG_NO_VLAN
 805         const char *iface;
 806         struct hostapd_vlan *vlan = NULL;
 807         int ret;
 808         int old_vlanid = sta->vlan_id_bound;
 809
 810         iface = hapd->conf->iface;
 811         if (hapd->conf->ssid.vlan[0])
 812                 iface = hapd->conf->ssid.vlan;
 813
 814         if (hapd->conf->ssid.dynamic_vlan == DYNAMIC_VLAN_DISABLED)
 815                 sta->vlan_id = 0;
 816         else if (sta->vlan_id > 0) {
 817                 struct hostapd_vlan *wildcard_vlan = NULL;
 818                 vlan = hapd->conf->vlan;
 819                 while (vlan) {
 820                         if (vlan->vlan_id == sta->vlan_id)
 821                                 break;
 822                         if (vlan->vlan_id == VLAN_ID_WILDCARD)
 823                                 wildcard_vlan = vlan;
 824                         vlan = vlan->next;
 825                 }
 826                 if (!vlan)
 827                         vlan = wildcard_vlan;
 828                 if (vlan)
 829                         iface = vlan->ifname;
 830         }
 831
 832         /*
 833          * Do not increment ref counters if the VLAN ID remains same, but do
 834          * not skip hostapd_drv_set_sta_vlan() as hostapd_drv_sta_remove() might
 835          * have been called before.
 836          */
 837         if (sta->vlan_id == old_vlanid)
 838                 goto skip_counting;
 839
 840         if (sta->vlan_id > 0 && vlan == NULL) {
 841                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 842                                HOSTAPD_LEVEL_DEBUG, "could not find VLAN for "
 843                                "binding station to (vlan_id=%d)",
 844                                sta->vlan_id);
 845                 ret = -1;
 846                 goto done;
 847         } else if (sta->vlan_id > 0 && vlan->vlan_id == VLAN_ID_WILDCARD) {
 848                 vlan = vlan_add_dynamic(hapd, vlan, sta->vlan_id);
 849                 if (vlan == NULL) {
 850                         hostapd_logger(hapd, sta->addr,
 851                                        HOSTAPD_MODULE_IEEE80211,
 852                                        HOSTAPD_LEVEL_DEBUG, "could not add "
 853                                        "dynamic VLAN interface for vlan_id=%d",
 854                                        sta->vlan_id);
 855                         ret = -1;
 856                         goto done;
 857                 }
 858
 859                 iface = vlan->ifname;
 860                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 861                                HOSTAPD_LEVEL_DEBUG, "added new dynamic VLAN "
 862                                "interface '%s'", iface);
 863         } else if (vlan && vlan->vlan_id == sta->vlan_id &&
 864                    vlan->dynamic_vlan > 0) {
 865                 vlan->dynamic_vlan++;
 866                 hostapd_logger(hapd, sta->addr,
 867                                HOSTAPD_MODULE_IEEE80211,
 868                                HOSTAPD_LEVEL_DEBUG,
 869                                "updated existing dynamic VLAN interface '%s'",
 870                                iface);
 871         }
 872
 873         /* ref counters have been increased, so mark the station */
 874         sta->vlan_id_bound = sta->vlan_id;
 875
 876 skip_counting:
 877         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 878                        HOSTAPD_LEVEL_DEBUG, "binding station to interface "
 879                        "'%s'", iface);
 880
 881         if (wpa_auth_sta_set_vlan(sta->wpa_sm, sta->vlan_id) < 0)
 882                 wpa_printf(MSG_INFO, "Failed to update VLAN-ID for WPA");
 883
 884         ret = hostapd_drv_set_sta_vlan(iface, hapd, sta->addr, sta->vlan_id);
 885         if (ret < 0) {
 886                 hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 887                                HOSTAPD_LEVEL_DEBUG, "could not bind the STA "
 888                                "entry to vlan_id=%d", sta->vlan_id);
 889         }
 890
 891         /* During 1x reauth, if the vlan id changes, then remove the old id. */
 892         if (old_vlanid > 0 && old_vlanid != sta->vlan_id)
 893                 vlan_remove_dynamic(hapd, old_vlanid);
 894 done:
 895
 896         return ret;
 897 #else /* CONFIG_NO_VLAN */
 898         return 0;
 899 #endif /* CONFIG_NO_VLAN */
 900 }
 901
 902
 903 #ifdef CONFIG_IEEE80211W
 904
 905 int ap_check_sa_query_timeout(struct hostapd_data *hapd, struct sta_info *sta)
 906 {
 907         u32 tu;
 908         struct os_reltime now, passed;
 909         os_get_reltime(&now);
 910         os_reltime_sub(&now, &sta->sa_query_start, &passed);
 911         tu = (passed.sec * 1000000 + passed.usec) / 1024;
 912         if (hapd->conf->assoc_sa_query_max_timeout < tu) {
 913                 hostapd_logger(hapd, sta->addr,
 914                                HOSTAPD_MODULE_IEEE80211,
 915                                HOSTAPD_LEVEL_DEBUG,
 916                                "association SA Query timed out");
 917                 sta->sa_query_timed_out = 1;
 918                 os_free(sta->sa_query_trans_id);
 919                 sta->sa_query_trans_id = NULL;
 920                 sta->sa_query_count = 0;
 921                 eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 922                 return 1;
 923         }
 924
 925         return 0;
 926 }
 927
 928
 929 static void ap_sa_query_timer(void *eloop_ctx, void *timeout_ctx)
 930 {
 931         struct hostapd_data *hapd = eloop_ctx;
 932         struct sta_info *sta = timeout_ctx;
 933         unsigned int timeout, sec, usec;
 934         u8 *trans_id, *nbuf;
 935
 936         wpa_printf(MSG_DEBUG, "%s: SA Query timer for STA " MACSTR
 937                    " (count=%d)",
 938                    hapd->conf->iface, MAC2STR(sta->addr), sta->sa_query_count);
 939
 940         if (sta->sa_query_count > 0 &&
 941             ap_check_sa_query_timeout(hapd, sta))
 942                 return;
 943
 944         nbuf = os_realloc_array(sta->sa_query_trans_id,
 945                                 sta->sa_query_count + 1,
 946                                 WLAN_SA_QUERY_TR_ID_LEN);
 947         if (nbuf == NULL)
 948                 return;
 949         if (sta->sa_query_count == 0) {
 950                 /* Starting a new SA Query procedure */
 951                 os_get_reltime(&sta->sa_query_start);
 952         }
 953         trans_id = nbuf + sta->sa_query_count * WLAN_SA_QUERY_TR_ID_LEN;
 954         sta->sa_query_trans_id = nbuf;
 955         sta->sa_query_count++;
 956
 957         if (os_get_random(trans_id, WLAN_SA_QUERY_TR_ID_LEN) < 0) {
 958                 /*
 959                  * We don't really care which ID is used here, so simply
 960                  * hardcode this if the mostly theoretical os_get_random()
 961                  * failure happens.
 962                  */
 963                 trans_id[0] = 0x12;
 964                 trans_id[1] = 0x34;
 965         }
 966
 967         timeout = hapd->conf->assoc_sa_query_retry_timeout;
 968         sec = ((timeout / 1000) * 1024) / 1000;
 969         usec = (timeout % 1000) * 1024;
 970         eloop_register_timeout(sec, usec, ap_sa_query_timer, hapd, sta);
 971
 972         hostapd_logger(hapd, sta->addr, HOSTAPD_MODULE_IEEE80211,
 973                        HOSTAPD_LEVEL_DEBUG,
 974                        "association SA Query attempt %d", sta->sa_query_count);
 975
 976         ieee802_11_send_sa_query_req(hapd, sta->addr, trans_id);
 977 }
 978
 979
 980 void ap_sta_start_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 981 {
 982         ap_sa_query_timer(hapd, sta);
 983 }
 984
 985
 986 void ap_sta_stop_sa_query(struct hostapd_data *hapd, struct sta_info *sta)
 987 {
 988         eloop_cancel_timeout(ap_sa_query_timer, hapd, sta);
 989         os_free(sta->sa_query_trans_id);
 990         sta->sa_query_trans_id = NULL;
 991         sta->sa_query_count = 0;
 992 }
 993
 994 #endif /* CONFIG_IEEE80211W */
 995
 996
 997 void ap_sta_set_authorized(struct hostapd_data *hapd, struct sta_info *sta,
 998                            int authorized)
 999 {
1000         const u8 *dev_addr = NULL;
1001         char buf[100];
1002 #ifdef CONFIG_P2P
1003         u8 addr[ETH_ALEN];
1004         u8 ip_addr_buf[4];
1005 #endif /* CONFIG_P2P */
1006
1007         if (!!authorized == !!(sta->flags & WLAN_STA_AUTHORIZED))
1008                 return;
1009
1010         if (authorized)
1011                 sta->flags |= WLAN_STA_AUTHORIZED;
1012         else
1013                 sta->flags &= ~WLAN_STA_AUTHORIZED;
1014
1015 #ifdef CONFIG_P2P
1016         if (hapd->p2p_group == NULL) {
1017                 if (sta->p2p_ie != NULL &&
1018                     p2p_parse_dev_addr_in_p2p_ie(sta->p2p_ie, addr) == 0)
1019                         dev_addr = addr;
1020         } else
1021                 dev_addr = p2p_group_get_dev_addr(hapd->p2p_group, sta->addr);
1022
1023         if (dev_addr)
1024                 os_snprintf(buf, sizeof(buf), MACSTR " p2p_dev_addr=" MACSTR,
1025                             MAC2STR(sta->addr), MAC2STR(dev_addr));
1026         else
1027 #endif /* CONFIG_P2P */
1028                 os_snprintf(buf, sizeof(buf), MACSTR, MAC2STR(sta->addr));
1029
1030         if (hapd->sta_authorized_cb)
1031                 hapd->sta_authorized_cb(hapd->sta_authorized_cb_ctx,
1032                                         sta->addr, authorized, dev_addr);
1033
1034         if (authorized) {
1035                 char ip_addr[100];
1036                 ip_addr[0] = '\0';
1037 #ifdef CONFIG_P2P
1038                 if (wpa_auth_get_ip_addr(sta->wpa_sm, ip_addr_buf) == 0) {
1039                         os_snprintf(ip_addr, sizeof(ip_addr),
1040                                     " ip_addr=%u.%u.%u.%u",
1041                                     ip_addr_buf[0], ip_addr_buf[1],
1042                                     ip_addr_buf[2], ip_addr_buf[3]);
1043                 }
1044 #endif /* CONFIG_P2P */
1045
1046                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_CONNECTED "%s%s",
1047                         buf, ip_addr);
1048
1049                 if (hapd->msg_ctx_parent &&
1050                     hapd->msg_ctx_parent != hapd->msg_ctx)
1051                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1052                                           AP_STA_CONNECTED "%s%s",
1053                                           buf, ip_addr);
1054         } else {
1055                 wpa_msg(hapd->msg_ctx, MSG_INFO, AP_STA_DISCONNECTED "%s", buf);
1056
1057                 if (hapd->msg_ctx_parent &&
1058                     hapd->msg_ctx_parent != hapd->msg_ctx)
1059                         wpa_msg_no_global(hapd->msg_ctx_parent, MSG_INFO,
1060                                           AP_STA_DISCONNECTED "%s", buf);
1061         }
1062
1063 #ifdef CONFIG_FST
1064         if (hapd->iface->fst) {
1065                 if (authorized)
1066                         fst_notify_peer_connected(hapd->iface->fst, sta->addr);
1067                 else
1068                         fst_notify_peer_disconnected(hapd->iface->fst,
1069                                                      sta->addr);
1070         }
1071 #endif /* CONFIG_FST */
1072 }
1073
1074
1075 void ap_sta_disconnect(struct hostapd_data *hapd, struct sta_info *sta,
1076                        const u8 *addr, u16 reason)
1077 {
1078         if (sta)
1079                 wpa_printf(MSG_DEBUG, "%s: %s STA " MACSTR " reason=%u",
1080                            hapd->conf->iface, __func__, MAC2STR(sta->addr),
1081                            reason);
1082         else if (addr)
1083                 wpa_printf(MSG_DEBUG, "%s: %s addr " MACSTR " reason=%u",
1084                            hapd->conf->iface, __func__, MAC2STR(addr),
1085                            reason);
1086
1087         if (sta == NULL && addr)
1088                 sta = ap_get_sta(hapd, addr);
1089
1090         if (addr)
1091                 hostapd_drv_sta_deauth(hapd, addr, reason);
1092
1093         if (sta == NULL)
1094                 return;
1095         ap_sta_set_authorized(hapd, sta, 0);
1096         wpa_auth_sm_event(sta->wpa_sm, WPA_DEAUTH);
1097         ieee802_1x_notify_port_enabled(sta->eapol_sm, 0);
1098         sta->flags &= ~(WLAN_STA_AUTH | WLAN_STA_ASSOC);
1099         wpa_printf(MSG_DEBUG, "%s: %s: reschedule ap_handle_timer timeout "
1100                    "for " MACSTR " (%d seconds - "
1101                    "AP_MAX_INACTIVITY_AFTER_DEAUTH)",
1102                    hapd->conf->iface, __func__, MAC2STR(sta->addr),
1103                    AP_MAX_INACTIVITY_AFTER_DEAUTH);
1104         eloop_cancel_timeout(ap_handle_timer, hapd, sta);
1105         eloop_register_timeout(AP_MAX_INACTIVITY_AFTER_DEAUTH, 0,
1106                                ap_handle_timer, hapd, sta);
1107         sta->timeout_next = STA_REMOVE;
1108
1109         sta->deauth_reason = reason;
1110         sta->flags |= WLAN_STA_PENDING_DEAUTH_CB;
1111         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1112         eloop_register_timeout(hapd->iface->drv_flags &
1113                                WPA_DRIVER_FLAGS_DEAUTH_TX_STATUS ? 2 : 0, 0,
1114                                ap_sta_deauth_cb_timeout, hapd, sta);
1115 }
1116
1117
1118 void ap_sta_deauth_cb(struct hostapd_data *hapd, struct sta_info *sta)
1119 {
1120         if (!(sta->flags & WLAN_STA_PENDING_DEAUTH_CB)) {
1121                 wpa_printf(MSG_DEBUG, "Ignore deauth cb for test frame");
1122                 return;
1123         }
1124         sta->flags &= ~WLAN_STA_PENDING_DEAUTH_CB;
1125         eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta);
1126         ap_sta_deauth_cb_timeout(hapd, sta);
1127 }
1128
1129
1130 void ap_sta_disassoc_cb(struct hostapd_data *hapd, struct sta_info *sta)
1131 {
1132         if (!(sta->flags & WLAN_STA_PENDING_DISASSOC_CB)) {
1133                 wpa_printf(MSG_DEBUG, "Ignore disassoc cb for test frame");
1134                 return;
1135         }
1136         sta->flags &= ~WLAN_STA_PENDING_DISASSOC_CB;
1137         eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta);
1138         ap_sta_disassoc_cb_timeout(hapd, sta);
1139 }
1140
1141
1142 void ap_sta_clear_disconnect_timeouts(struct hostapd_data *hapd,
1143                                       struct sta_info *sta)
1144 {
1145         if (eloop_cancel_timeout(ap_sta_deauth_cb_timeout, hapd, sta) > 0)
1146                 wpa_printf(MSG_DEBUG,
1147                            "%s: Removed ap_sta_deauth_cb_timeout timeout for "
1148                            MACSTR,
1149                            hapd->conf->iface, MAC2STR(sta->addr));
1150         if (eloop_cancel_timeout(ap_sta_disassoc_cb_timeout, hapd, sta) > 0)
1151                 wpa_printf(MSG_DEBUG,
1152                            "%s: Removed ap_sta_disassoc_cb_timeout timeout for "
1153                            MACSTR,
1154                            hapd->conf->iface, MAC2STR(sta->addr));
1155 }
1156
1157
1158 int ap_sta_flags_txt(u32 flags, char *buf, size_t buflen)
1159 {
1160         int res;
1161
1162         buf[0] = '\0';
1163         res = os_snprintf(buf, buflen, "%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s",
1164                           (flags & WLAN_STA_AUTH ? "[AUTH]" : ""),
1165                           (flags & WLAN_STA_ASSOC ? "[ASSOC]" : ""),
1166                           (flags & WLAN_STA_AUTHORIZED ? "[AUTHORIZED]" : ""),
1167                           (flags & WLAN_STA_PENDING_POLL ? "[PENDING_POLL" :
1168                            ""),
1169                           (flags & WLAN_STA_SHORT_PREAMBLE ?
1170                            "[SHORT_PREAMBLE]" : ""),
1171                           (flags & WLAN_STA_PREAUTH ? "[PREAUTH]" : ""),
1172                           (flags & WLAN_STA_WMM ? "[WMM]" : ""),
1173                           (flags & WLAN_STA_MFP ? "[MFP]" : ""),
1174                           (flags & WLAN_STA_WPS ? "[WPS]" : ""),
1175                           (flags & WLAN_STA_MAYBE_WPS ? "[MAYBE_WPS]" : ""),
1176                           (flags & WLAN_STA_WDS ? "[WDS]" : ""),
1177                           (flags & WLAN_STA_NONERP ? "[NonERP]" : ""),
1178                           (flags & WLAN_STA_WPS2 ? "[WPS2]" : ""),
1179                           (flags & WLAN_STA_GAS ? "[GAS]" : ""),
1180                           (flags & WLAN_STA_VHT ? "[VHT]" : ""),
1181                           (flags & WLAN_STA_VENDOR_VHT ? "[VENDOR_VHT]" : ""),
1182                           (flags & WLAN_STA_WNM_SLEEP_MODE ?
1183                            "[WNM_SLEEP_MODE]" : ""));
1184         if (os_snprintf_error(buflen, res))
1185                 res = -1;
1186
1187         return res;
1188 }