src/ap/ap_drv_ops.c

   1 /*
   2  * hostapd - Driver operations
   3  * Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "drivers/driver.h"
  19 #include "common/ieee802_11_defs.h"
  20 #include "wps/wps.h"
  21 #include "hostapd.h"
  22 #include "ieee802_11.h"
  23 #include "sta_info.h"
  24 #include "ap_config.h"
  25 #include "p2p_hostapd.h"
  26 #include "ap_drv_ops.h"
  27
  28
  29 u32 hostapd_sta_flags_to_drv(u32 flags)
  30 {
  31         int res = 0;
  32         if (flags & WLAN_STA_AUTHORIZED)
  33                 res |= WPA_STA_AUTHORIZED;
  34         if (flags & WLAN_STA_WMM)
  35                 res |= WPA_STA_WMM;
  36         if (flags & WLAN_STA_SHORT_PREAMBLE)
  37                 res |= WPA_STA_SHORT_PREAMBLE;
  38         if (flags & WLAN_STA_MFP)
  39                 res |= WPA_STA_MFP;
  40         return res;
  41 }
  42
  43
  44 int hostapd_build_ap_extra_ies(struct hostapd_data *hapd,
  45                                struct wpabuf **beacon_ret,
  46                                struct wpabuf **proberesp_ret,
  47                                struct wpabuf **assocresp_ret)
  48 {
  49         struct wpabuf *beacon = NULL, *proberesp = NULL, *assocresp = NULL;
  50         u8 buf[100], *pos;
  51
  52         *beacon_ret = *proberesp_ret = *assocresp_ret = NULL;
  53
  54         pos = buf;
  55         pos = hostapd_eid_ext_capab(hapd, pos);
  56         if (pos != buf) {
  57                 if (wpabuf_resize(&assocresp, pos - buf) != 0)
  58                         goto fail;
  59                 wpabuf_put_data(assocresp, buf, pos - buf);
  60         }
  61         pos = hostapd_eid_interworking(hapd, pos);
  62         if (pos != buf) {
  63                 if (wpabuf_resize(&beacon, pos - buf) != 0)
  64                         goto fail;
  65                 wpabuf_put_data(beacon, buf, pos - buf);
  66
  67                 if (wpabuf_resize(&proberesp, pos - buf) != 0)
  68                         goto fail;
  69                 wpabuf_put_data(proberesp, buf, pos - buf);
  70         }
  71
  72         if (hapd->wps_beacon_ie) {
  73                 if (wpabuf_resize(&beacon, wpabuf_len(hapd->wps_beacon_ie)) <
  74                     0)
  75                         goto fail;
  76                 wpabuf_put_buf(beacon, hapd->wps_beacon_ie);
  77         }
  78
  79         if (hapd->wps_probe_resp_ie) {
  80                 if (wpabuf_resize(&proberesp,
  81                                   wpabuf_len(hapd->wps_probe_resp_ie)) < 0)
  82                         goto fail;
  83                 wpabuf_put_buf(proberesp, hapd->wps_probe_resp_ie);
  84         }
  85
  86 #ifdef CONFIG_P2P
  87         if (hapd->p2p_beacon_ie) {
  88                 if (wpabuf_resize(&beacon, wpabuf_len(hapd->p2p_beacon_ie)) <
  89                     0)
  90                         goto fail;
  91                 wpabuf_put_buf(beacon, hapd->p2p_beacon_ie);
  92         }
  93
  94         if (hapd->p2p_probe_resp_ie) {
  95                 if (wpabuf_resize(&beacon, wpabuf_len(hapd->p2p_probe_resp_ie))
  96                     < 0)
  97                         goto fail;
  98                 wpabuf_put_buf(beacon, hapd->p2p_probe_resp_ie);
  99         }
 100 #endif /* CONFIG_P2P */
 101
 102 #ifdef CONFIG_P2P_MANAGER
 103         if (hapd->conf->p2p & P2P_MANAGE) {
 104                 if (wpabuf_resize(&beacon, 100) == 0) {
 105                         u8 *start, *p;
 106                         start = wpabuf_put(beacon, 0);
 107                         p = hostapd_eid_p2p_manage(hapd, start);
 108                         wpabuf_put(beacon, p - start);
 109                 }
 110
 111                 if (wpabuf_resize(&proberesp, 100) == 0) {
 112                         u8 *start, *p;
 113                         start = wpabuf_put(proberesp, 0);
 114                         p = hostapd_eid_p2p_manage(hapd, start);
 115                         wpabuf_put(proberesp, p - start);
 116                 }
 117         }
 118 #endif /* CONFIG_P2P_MANAGER */
 119
 120 #ifdef CONFIG_WPS2
 121         if (hapd->conf->wps_state) {
 122                 struct wpabuf *a = wps_build_assoc_resp_ie();
 123                 if (a && wpabuf_resize(&assocresp, wpabuf_len(a)) == 0)
 124                         wpabuf_put_buf(assocresp, a);
 125                 wpabuf_free(a);
 126         }
 127 #endif /* CONFIG_WPS2 */
 128
 129 #ifdef CONFIG_P2P_MANAGER
 130         if (hapd->conf->p2p & P2P_MANAGE) {
 131                 if (wpabuf_resize(&assocresp, 100) == 0) {
 132                         u8 *start, *p;
 133                         start = wpabuf_put(assocresp, 0);
 134                         p = hostapd_eid_p2p_manage(hapd, start);
 135                         wpabuf_put(assocresp, p - start);
 136                 }
 137         }
 138 #endif /* CONFIG_P2P_MANAGER */
 139
 140         *beacon_ret = beacon;
 141         *proberesp_ret = proberesp;
 142         *assocresp_ret = assocresp;
 143
 144         return 0;
 145
 146 fail:
 147         wpabuf_free(beacon);
 148         wpabuf_free(proberesp);
 149         wpabuf_free(assocresp);
 150         return -1;
 151 }
 152
 153
 154 void hostapd_free_ap_extra_ies(struct hostapd_data *hapd,
 155                                struct wpabuf *beacon,
 156                                struct wpabuf *proberesp,
 157                                struct wpabuf *assocresp)
 158 {
 159         wpabuf_free(beacon);
 160         wpabuf_free(proberesp);
 161         wpabuf_free(assocresp);
 162 }
 163
 164
 165 int hostapd_set_ap_wps_ie(struct hostapd_data *hapd)
 166 {
 167         struct wpabuf *beacon, *proberesp, *assocresp;
 168         int ret;
 169
 170         if (hapd->driver == NULL || hapd->driver->set_ap_wps_ie == NULL)
 171                 return 0;
 172
 173         if (hostapd_build_ap_extra_ies(hapd, &beacon, &proberesp, &assocresp) <
 174             0)
 175                 return -1;
 176
 177         ret = hapd->driver->set_ap_wps_ie(hapd->drv_priv, beacon, proberesp,
 178                                           assocresp);
 179
 180         hostapd_free_ap_extra_ies(hapd, beacon, proberesp, assocresp);
 181
 182         return ret;
 183 }
 184
 185
 186 int hostapd_set_authorized(struct hostapd_data *hapd,
 187                            struct sta_info *sta, int authorized)
 188 {
 189         if (authorized) {
 190                 return hostapd_sta_set_flags(hapd, sta->addr,
 191                                              hostapd_sta_flags_to_drv(
 192                                                      sta->flags),
 193                                              WPA_STA_AUTHORIZED, ~0);
 194         }
 195
 196         return hostapd_sta_set_flags(hapd, sta->addr,
 197                                      hostapd_sta_flags_to_drv(sta->flags),
 198                                      0, ~WPA_STA_AUTHORIZED);
 199 }
 200
 201
 202 int hostapd_set_sta_flags(struct hostapd_data *hapd, struct sta_info *sta)
 203 {
 204         int set_flags, total_flags, flags_and, flags_or;
 205         total_flags = hostapd_sta_flags_to_drv(sta->flags);
 206         set_flags = WPA_STA_SHORT_PREAMBLE | WPA_STA_WMM | WPA_STA_MFP;
 207         if (((!hapd->conf->ieee802_1x && !hapd->conf->wpa) ||
 208              sta->auth_alg == WLAN_AUTH_FT) &&
 209             sta->flags & WLAN_STA_AUTHORIZED)
 210                 set_flags |= WPA_STA_AUTHORIZED;
 211         flags_or = total_flags & set_flags;
 212         flags_and = total_flags | ~set_flags;
 213         return hostapd_sta_set_flags(hapd, sta->addr, total_flags,
 214                                      flags_or, flags_and);
 215 }
 216
 217
 218 int hostapd_set_drv_ieee8021x(struct hostapd_data *hapd, const char *ifname,
 219                               int enabled)
 220 {
 221         struct wpa_bss_params params;
 222         os_memset(&params, 0, sizeof(params));
 223         params.ifname = ifname;
 224         params.enabled = enabled;
 225         if (enabled) {
 226                 params.wpa = hapd->conf->wpa;
 227                 params.ieee802_1x = hapd->conf->ieee802_1x;
 228                 params.wpa_group = hapd->conf->wpa_group;
 229                 params.wpa_pairwise = hapd->conf->wpa_pairwise;
 230                 params.wpa_key_mgmt = hapd->conf->wpa_key_mgmt;
 231                 params.rsn_preauth = hapd->conf->rsn_preauth;
 232 #ifdef CONFIG_IEEE80211W
 233                 params.ieee80211w = hapd->conf->ieee80211w;
 234 #endif /* CONFIG_IEEE80211W */
 235         }
 236         return hostapd_set_ieee8021x(hapd, &params);
 237 }
 238
 239
 240 int hostapd_vlan_if_add(struct hostapd_data *hapd, const char *ifname)
 241 {
 242         char force_ifname[IFNAMSIZ];
 243         u8 if_addr[ETH_ALEN];
 244         return hostapd_if_add(hapd, WPA_IF_AP_VLAN, ifname, hapd->own_addr,
 245                               NULL, NULL, force_ifname, if_addr, NULL);
 246 }
 247
 248
 249 int hostapd_vlan_if_remove(struct hostapd_data *hapd, const char *ifname)
 250 {
 251         return hostapd_if_remove(hapd, WPA_IF_AP_VLAN, ifname);
 252 }
 253
 254
 255 int hostapd_set_wds_sta(struct hostapd_data *hapd, const u8 *addr, int aid,
 256                         int val)
 257 {
 258         const char *bridge = NULL;
 259
 260         if (hapd->driver == NULL || hapd->driver->set_wds_sta == NULL)
 261                 return 0;
 262         if (hapd->conf->wds_bridge[0])
 263                 bridge = hapd->conf->wds_bridge;
 264         else if (hapd->conf->bridge[0])
 265                 bridge = hapd->conf->bridge;
 266         return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val,
 267                                          bridge);
 268 }
 269
 270
 271 int hostapd_add_sta_node(struct hostapd_data *hapd, const u8 *addr,
 272                          u16 auth_alg)
 273 {
 274         if (hapd->driver == NULL || hapd->driver->add_sta_node == NULL)
 275                 return 0;
 276         return hapd->driver->add_sta_node(hapd->drv_priv, addr, auth_alg);
 277 }
 278
 279
 280 int hostapd_sta_auth(struct hostapd_data *hapd, const u8 *addr,
 281                      u16 seq, u16 status, const u8 *ie, size_t len)
 282 {
 283         if (hapd->driver == NULL || hapd->driver->sta_auth == NULL)
 284                 return 0;
 285         return hapd->driver->sta_auth(hapd->drv_priv, hapd->own_addr, addr,
 286                                       seq, status, ie, len);
 287 }
 288
 289
 290 int hostapd_sta_assoc(struct hostapd_data *hapd, const u8 *addr,
 291                       int reassoc, u16 status, const u8 *ie, size_t len)
 292 {
 293         if (hapd->driver == NULL || hapd->driver->sta_assoc == NULL)
 294                 return 0;
 295         return hapd->driver->sta_assoc(hapd->drv_priv, hapd->own_addr, addr,
 296                                        reassoc, status, ie, len);
 297 }
 298
 299
 300 int hostapd_sta_add(struct hostapd_data *hapd,
 301                     const u8 *addr, u16 aid, u16 capability,
 302                     const u8 *supp_rates, size_t supp_rates_len,
 303                     u16 listen_interval,
 304                     const struct ieee80211_ht_capabilities *ht_capab,
 305                     u32 flags)
 306 {
 307         struct hostapd_sta_add_params params;
 308
 309         if (hapd->driver == NULL)
 310                 return 0;
 311         if (hapd->driver->sta_add == NULL)
 312                 return 0;
 313
 314         os_memset(&params, 0, sizeof(params));
 315         params.addr = addr;
 316         params.aid = aid;
 317         params.capability = capability;
 318         params.supp_rates = supp_rates;
 319         params.supp_rates_len = supp_rates_len;
 320         params.listen_interval = listen_interval;
 321         params.ht_capabilities = ht_capab;
 322         params.flags = hostapd_sta_flags_to_drv(flags);
 323         return hapd->driver->sta_add(hapd->drv_priv, &params);
 324 }
 325
 326
 327 int hostapd_add_tspec(struct hostapd_data *hapd, const u8 *addr,
 328                       u8 *tspec_ie, size_t tspec_ielen)
 329 {
 330         if (hapd->driver == NULL || hapd->driver->add_tspec == NULL)
 331                 return 0;
 332         return hapd->driver->add_tspec(hapd->drv_priv, addr, tspec_ie,
 333                                        tspec_ielen);
 334 }
 335
 336
 337 int hostapd_set_privacy(struct hostapd_data *hapd, int enabled)
 338 {
 339         if (hapd->driver == NULL || hapd->driver->set_privacy == NULL)
 340                 return 0;
 341         return hapd->driver->set_privacy(hapd->drv_priv, enabled);
 342 }
 343
 344
 345 int hostapd_set_generic_elem(struct hostapd_data *hapd, const u8 *elem,
 346                              size_t elem_len)
 347 {
 348         if (hapd->driver == NULL || hapd->driver->set_generic_elem == NULL)
 349                 return 0;
 350         return hapd->driver->set_generic_elem(hapd->drv_priv, elem, elem_len);
 351 }
 352
 353
 354 int hostapd_get_ssid(struct hostapd_data *hapd, u8 *buf, size_t len)
 355 {
 356         if (hapd->driver == NULL || hapd->driver->hapd_get_ssid == NULL)
 357                 return 0;
 358         return hapd->driver->hapd_get_ssid(hapd->drv_priv, buf, len);
 359 }
 360
 361
 362 int hostapd_set_ssid(struct hostapd_data *hapd, const u8 *buf, size_t len)
 363 {
 364         if (hapd->driver == NULL || hapd->driver->hapd_set_ssid == NULL)
 365                 return 0;
 366         return hapd->driver->hapd_set_ssid(hapd->drv_priv, buf, len);
 367 }
 368
 369
 370 int hostapd_if_add(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 371                    const char *ifname, const u8 *addr, void *bss_ctx,
 372                    void **drv_priv, char *force_ifname, u8 *if_addr,
 373                    const char *bridge)
 374 {
 375         if (hapd->driver == NULL || hapd->driver->if_add == NULL)
 376                 return -1;
 377         return hapd->driver->if_add(hapd->drv_priv, type, ifname, addr,
 378                                     bss_ctx, drv_priv, force_ifname, if_addr,
 379                                     bridge);
 380 }
 381
 382
 383 int hostapd_if_remove(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 384                       const char *ifname)
 385 {
 386         if (hapd->driver == NULL || hapd->driver->if_remove == NULL)
 387                 return -1;
 388         return hapd->driver->if_remove(hapd->drv_priv, type, ifname);
 389 }
 390
 391
 392 int hostapd_set_ieee8021x(struct hostapd_data *hapd,
 393                           struct wpa_bss_params *params)
 394 {
 395         if (hapd->driver == NULL || hapd->driver->set_ieee8021x == NULL)
 396                 return 0;
 397         return hapd->driver->set_ieee8021x(hapd->drv_priv, params);
 398 }
 399
 400
 401 int hostapd_get_seqnum(const char *ifname, struct hostapd_data *hapd,
 402                        const u8 *addr, int idx, u8 *seq)
 403 {
 404         if (hapd->driver == NULL || hapd->driver->get_seqnum == NULL)
 405                 return 0;
 406         return hapd->driver->get_seqnum(ifname, hapd->drv_priv, addr, idx,
 407                                         seq);
 408 }
 409
 410
 411 int hostapd_flush(struct hostapd_data *hapd)
 412 {
 413         if (hapd->driver == NULL || hapd->driver->flush == NULL)
 414                 return 0;
 415         return hapd->driver->flush(hapd->drv_priv);
 416 }
 417
 418
 419 int hostapd_set_freq(struct hostapd_data *hapd, int mode, int freq,
 420                      int channel, int ht_enabled, int sec_channel_offset)
 421 {
 422         struct hostapd_freq_params data;
 423         if (hapd->driver == NULL)
 424                 return 0;
 425         if (hapd->driver->set_freq == NULL)
 426                 return 0;
 427         os_memset(&data, 0, sizeof(data));
 428         data.mode = mode;
 429         data.freq = freq;
 430         data.channel = channel;
 431         data.ht_enabled = ht_enabled;
 432         data.sec_channel_offset = sec_channel_offset;
 433         return hapd->driver->set_freq(hapd->drv_priv, &data);
 434 }
 435
 436 int hostapd_set_rts(struct hostapd_data *hapd, int rts)
 437 {
 438         if (hapd->driver == NULL || hapd->driver->set_rts == NULL)
 439                 return 0;
 440         return hapd->driver->set_rts(hapd->drv_priv, rts);
 441 }
 442
 443
 444 int hostapd_set_frag(struct hostapd_data *hapd, int frag)
 445 {
 446         if (hapd->driver == NULL || hapd->driver->set_frag == NULL)
 447                 return 0;
 448         return hapd->driver->set_frag(hapd->drv_priv, frag);
 449 }
 450
 451
 452 int hostapd_sta_set_flags(struct hostapd_data *hapd, u8 *addr,
 453                           int total_flags, int flags_or, int flags_and)
 454 {
 455         if (hapd->driver == NULL || hapd->driver->sta_set_flags == NULL)
 456                 return 0;
 457         return hapd->driver->sta_set_flags(hapd->drv_priv, addr, total_flags,
 458                                            flags_or, flags_and);
 459 }
 460
 461
 462 int hostapd_set_rate_sets(struct hostapd_data *hapd, int *supp_rates,
 463                           int *basic_rates, int mode)
 464 {
 465         if (hapd->driver == NULL || hapd->driver->set_rate_sets == NULL)
 466                 return 0;
 467         return hapd->driver->set_rate_sets(hapd->drv_priv, supp_rates,
 468                                            basic_rates, mode);
 469 }
 470
 471
 472 int hostapd_set_country(struct hostapd_data *hapd, const char *country)
 473 {
 474         if (hapd->driver == NULL ||
 475             hapd->driver->set_country == NULL)
 476                 return 0;
 477         return hapd->driver->set_country(hapd->drv_priv, country);
 478 }
 479
 480
 481 int hostapd_set_tx_queue_params(struct hostapd_data *hapd, int queue, int aifs,
 482                                 int cw_min, int cw_max, int burst_time)
 483 {
 484         if (hapd->driver == NULL || hapd->driver->set_tx_queue_params == NULL)
 485                 return 0;
 486         return hapd->driver->set_tx_queue_params(hapd->drv_priv, queue, aifs,
 487                                                  cw_min, cw_max, burst_time);
 488 }
 489
 490
 491 int hostapd_valid_bss_mask(struct hostapd_data *hapd, const u8 *addr,
 492                            const u8 *mask)
 493 {
 494         if (hapd->driver == NULL || hapd->driver->valid_bss_mask == NULL)
 495                 return 1;
 496         return hapd->driver->valid_bss_mask(hapd->drv_priv, addr, mask);
 497 }
 498
 499
 500 struct hostapd_hw_modes *
 501 hostapd_get_hw_feature_data(struct hostapd_data *hapd, u16 *num_modes,
 502                             u16 *flags)
 503 {
 504         if (hapd->driver == NULL ||
 505             hapd->driver->get_hw_feature_data == NULL)
 506                 return NULL;
 507         return hapd->driver->get_hw_feature_data(hapd->drv_priv, num_modes,
 508                                                  flags);
 509 }
 510
 511
 512 int hostapd_driver_commit(struct hostapd_data *hapd)
 513 {
 514         if (hapd->driver == NULL || hapd->driver->commit == NULL)
 515                 return 0;
 516         return hapd->driver->commit(hapd->drv_priv);
 517 }
 518
 519
 520 int hostapd_drv_none(struct hostapd_data *hapd)
 521 {
 522         return hapd->driver && os_strcmp(hapd->driver->name, "none") == 0;
 523 }
 524
 525
 526 int hostapd_driver_scan(struct hostapd_data *hapd,
 527                         struct wpa_driver_scan_params *params)
 528 {
 529         if (hapd->driver && hapd->driver->scan2)
 530                 return hapd->driver->scan2(hapd->drv_priv, params);
 531         return -1;
 532 }
 533
 534
 535 struct wpa_scan_results * hostapd_driver_get_scan_results(
 536         struct hostapd_data *hapd)
 537 {
 538         if (hapd->driver && hapd->driver->get_scan_results2)
 539                 return hapd->driver->get_scan_results2(hapd->drv_priv);
 540         return NULL;
 541 }
 542
 543
 544 int hostapd_driver_set_noa(struct hostapd_data *hapd, u8 count, int start,
 545                            int duration)
 546 {
 547         if (hapd->driver && hapd->driver->set_noa)
 548                 return hapd->driver->set_noa(hapd->drv_priv, count, start,
 549                                              duration);
 550         return -1;
 551 }
 552
 553
 554 int hostapd_drv_set_key(const char *ifname, struct hostapd_data *hapd,
 555                         enum wpa_alg alg, const u8 *addr,
 556                         int key_idx, int set_tx,
 557                         const u8 *seq, size_t seq_len,
 558                         const u8 *key, size_t key_len)
 559 {
 560         if (hapd->driver == NULL || hapd->driver->set_key == NULL)
 561                 return 0;
 562         return hapd->driver->set_key(ifname, hapd->drv_priv, alg, addr,
 563                                      key_idx, set_tx, seq, seq_len, key,
 564                                      key_len);
 565 }
 566
 567
 568 int hostapd_drv_send_mlme(struct hostapd_data *hapd,
 569                           const void *msg, size_t len)
 570 {
 571         if (hapd->driver == NULL || hapd->driver->send_mlme == NULL)
 572                 return 0;
 573         return hapd->driver->send_mlme(hapd->drv_priv, msg, len);
 574 }
 575
 576
 577 int hostapd_drv_sta_deauth(struct hostapd_data *hapd,
 578                            const u8 *addr, int reason)
 579 {
 580         if (hapd->driver == NULL || hapd->driver->sta_deauth == NULL)
 581                 return 0;
 582         return hapd->driver->sta_deauth(hapd->drv_priv, hapd->own_addr, addr,
 583                                         reason);
 584 }
 585
 586
 587 int hostapd_drv_sta_disassoc(struct hostapd_data *hapd,
 588                              const u8 *addr, int reason)
 589 {
 590         if (hapd->driver == NULL || hapd->driver->sta_disassoc == NULL)
 591                 return 0;
 592         return hapd->driver->sta_disassoc(hapd->drv_priv, hapd->own_addr, addr,
 593                                           reason);
 594 }