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