src/ap/ap_drv_ops.c

   1 /*
   2  * hostapd - Driver operations
   3  * Copyright (c) 2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "drivers/driver.h"
  19 #include "hostapd.h"
  20 #include "ieee802_11.h"
  21 #include "sta_info.h"
  22 #include "ap_config.h"
  23 #include "ap_drv_ops.h"
  24
  25
  26 static int hostapd_sta_flags_to_drv(int flags)
  27 {
  28         int res = 0;
  29         if (flags & WLAN_STA_AUTHORIZED)
  30                 res |= WPA_STA_AUTHORIZED;
  31         if (flags & WLAN_STA_WMM)
  32                 res |= WPA_STA_WMM;
  33         if (flags & WLAN_STA_SHORT_PREAMBLE)
  34                 res |= WPA_STA_SHORT_PREAMBLE;
  35         if (flags & WLAN_STA_MFP)
  36                 res |= WPA_STA_MFP;
  37         return res;
  38 }
  39
  40
  41 static int hostapd_set_ap_wps_ie(struct hostapd_data *hapd,
  42                                  const struct wpabuf *beacon,
  43                                  const struct wpabuf *proberesp)
  44 {
  45         if (hapd->driver == NULL || hapd->driver->set_ap_wps_ie == NULL)
  46                 return 0;
  47         return hapd->driver->set_ap_wps_ie(hapd->drv_priv, beacon, proberesp);
  48 }
  49
  50
  51 static int hostapd_send_mgmt_frame(struct hostapd_data *hapd, const void *msg,
  52                            size_t len)
  53 {
  54         if (hapd->driver == NULL || hapd->driver->send_mlme == NULL)
  55                 return 0;
  56         return hapd->driver->send_mlme(hapd->drv_priv, msg, len);
  57 }
  58
  59
  60 static int hostapd_send_eapol(struct hostapd_data *hapd, const u8 *addr,
  61                               const u8 *data, size_t data_len, int encrypt)
  62 {
  63         if (hapd->driver == NULL || hapd->driver->hapd_send_eapol == NULL)
  64                 return 0;
  65         return hapd->driver->hapd_send_eapol(hapd->drv_priv, addr, data,
  66                                              data_len, encrypt,
  67                                              hapd->own_addr);
  68 }
  69
  70
  71 static int hostapd_set_authorized(struct hostapd_data *hapd,
  72                                   struct sta_info *sta, int authorized)
  73 {
  74         if (authorized) {
  75                 return hostapd_sta_set_flags(hapd, sta->addr,
  76                                              hostapd_sta_flags_to_drv(
  77                                                      sta->flags),
  78                                              WPA_STA_AUTHORIZED, ~0);
  79         }
  80
  81         return hostapd_sta_set_flags(hapd, sta->addr,
  82                                      hostapd_sta_flags_to_drv(sta->flags),
  83                                      0, ~WPA_STA_AUTHORIZED);
  84 }
  85
  86
  87 static int hostapd_set_key(const char *ifname, struct hostapd_data *hapd,
  88                            enum wpa_alg alg, const u8 *addr, int key_idx,
  89                            int set_tx, const u8 *seq, size_t seq_len,
  90                            const u8 *key, size_t key_len)
  91 {
  92         if (hapd->driver == NULL || hapd->driver->set_key == NULL)
  93                 return 0;
  94         return hapd->driver->set_key(ifname, hapd->drv_priv, alg, addr,
  95                                      key_idx, set_tx, seq, seq_len, key,
  96                                      key_len);
  97 }
  98
  99
 100 static int hostapd_read_sta_data(struct hostapd_data *hapd,
 101                                  struct hostap_sta_driver_data *data,
 102                                  const u8 *addr)
 103 {
 104         if (hapd->driver == NULL || hapd->driver->read_sta_data == NULL)
 105                 return -1;
 106         return hapd->driver->read_sta_data(hapd->drv_priv, data, addr);
 107 }
 108
 109
 110 static int hostapd_sta_clear_stats(struct hostapd_data *hapd, const u8 *addr)
 111 {
 112         if (hapd->driver == NULL || hapd->driver->sta_clear_stats == NULL)
 113                 return 0;
 114         return hapd->driver->sta_clear_stats(hapd->drv_priv, addr);
 115 }
 116
 117
 118 static int hostapd_set_sta_flags(struct hostapd_data *hapd,
 119                                  struct sta_info *sta)
 120 {
 121         int set_flags, total_flags, flags_and, flags_or;
 122         total_flags = hostapd_sta_flags_to_drv(sta->flags);
 123         set_flags = WPA_STA_SHORT_PREAMBLE | WPA_STA_WMM | WPA_STA_MFP;
 124         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
 125             sta->flags & WLAN_STA_AUTHORIZED)
 126                 set_flags |= WPA_STA_AUTHORIZED;
 127         flags_or = total_flags & set_flags;
 128         flags_and = total_flags | ~set_flags;
 129         return hostapd_sta_set_flags(hapd, sta->addr, total_flags,
 130                                      flags_or, flags_and);
 131 }
 132
 133
 134 static int hostapd_set_drv_ieee8021x(struct hostapd_data *hapd,
 135                                      const char *ifname, int enabled)
 136 {
 137         struct wpa_bss_params params;
 138         os_memset(&params, 0, sizeof(params));
 139         params.ifname = ifname;
 140         params.enabled = enabled;
 141         if (enabled) {
 142                 params.wpa = hapd->conf->wpa;
 143                 params.ieee802_1x = hapd->conf->ieee802_1x;
 144                 params.wpa_group = hapd->conf->wpa_group;
 145                 params.wpa_pairwise = hapd->conf->wpa_pairwise;
 146                 params.wpa_key_mgmt = hapd->conf->wpa_key_mgmt;
 147                 params.rsn_preauth = hapd->conf->rsn_preauth;
 148         }
 149         return hostapd_set_ieee8021x(hapd, &params);
 150 }
 151
 152
 153 static int hostapd_set_radius_acl_auth(struct hostapd_data *hapd,
 154                                        const u8 *mac, int accepted,
 155                                        u32 session_timeout)
 156 {
 157         if (hapd->driver == NULL || hapd->driver->set_radius_acl_auth == NULL)
 158                 return 0;
 159         return hapd->driver->set_radius_acl_auth(hapd->drv_priv, mac, accepted,
 160                                                  session_timeout);
 161 }
 162
 163
 164 static int hostapd_set_radius_acl_expire(struct hostapd_data *hapd,
 165                                          const u8 *mac)
 166 {
 167         if (hapd->driver == NULL ||
 168             hapd->driver->set_radius_acl_expire == NULL)
 169                 return 0;
 170         return hapd->driver->set_radius_acl_expire(hapd->drv_priv, mac);
 171 }
 172
 173
 174 static int hostapd_set_bss_params(struct hostapd_data *hapd,
 175                                   int use_protection)
 176 {
 177         int ret = 0;
 178         int preamble;
 179 #ifdef CONFIG_IEEE80211N
 180         u8 buf[60], *ht_capab, *ht_oper, *pos;
 181
 182         pos = buf;
 183         ht_capab = pos;
 184         pos = hostapd_eid_ht_capabilities(hapd, pos);
 185         ht_oper = pos;
 186         pos = hostapd_eid_ht_operation(hapd, pos);
 187         if (pos > ht_oper && ht_oper > ht_capab &&
 188             hostapd_set_ht_params(hapd, ht_capab + 2, ht_capab[1],
 189                                   ht_oper + 2, ht_oper[1])) {
 190                 wpa_printf(MSG_ERROR, "Could not set HT capabilities "
 191                            "for kernel driver");
 192                 ret = -1;
 193         }
 194
 195 #endif /* CONFIG_IEEE80211N */
 196
 197         if (hostapd_set_cts_protect(hapd, use_protection)) {
 198                 wpa_printf(MSG_ERROR, "Failed to set CTS protect in kernel "
 199                            "driver");
 200                 ret = -1;
 201         }
 202
 203         if (hapd->iface->current_mode &&
 204             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 205             hostapd_set_short_slot_time(hapd,
 206                                         hapd->iface->num_sta_no_short_slot_time
 207                                         > 0 ? 0 : 1)) {
 208                 wpa_printf(MSG_ERROR, "Failed to set Short Slot Time option "
 209                            "in kernel driver");
 210                 ret = -1;
 211         }
 212
 213         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 214             hapd->iconf->preamble == SHORT_PREAMBLE)
 215                 preamble = SHORT_PREAMBLE;
 216         else
 217                 preamble = LONG_PREAMBLE;
 218         if (hostapd_set_preamble(hapd, preamble)) {
 219                 wpa_printf(MSG_ERROR, "Could not set preamble for kernel "
 220                            "driver");
 221                 ret = -1;
 222         }
 223
 224         return ret;
 225 }
 226
 227
 228 static int hostapd_set_beacon(struct hostapd_data *hapd,
 229                               const u8 *head, size_t head_len,
 230                               const u8 *tail, size_t tail_len, int dtim_period,
 231                               int beacon_int)
 232 {
 233         if (hapd->driver == NULL || hapd->driver->set_beacon == NULL)
 234                 return 0;
 235         return hapd->driver->set_beacon(hapd->drv_priv,
 236                                         head, head_len, tail, tail_len,
 237                                         dtim_period, beacon_int);
 238 }
 239
 240
 241 static int hostapd_vlan_if_add(struct hostapd_data *hapd, const char *ifname)
 242 {
 243         return hostapd_if_add(hapd, WPA_IF_AP_VLAN, ifname, NULL, NULL, NULL);
 244 }
 245
 246 static int hostapd_vlan_if_remove(struct hostapd_data *hapd,
 247                                   const char *ifname)
 248 {
 249         return hostapd_if_remove(hapd, WPA_IF_AP_VLAN, ifname);
 250 }
 251
 252
 253 static int hostapd_set_wds_sta(struct hostapd_data *hapd, const u8 *addr,
 254                                int aid, int val)
 255 {
 256         if (hapd->driver == NULL || hapd->driver->set_wds_sta == NULL)
 257                 return 0;
 258         return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val);
 259 }
 260
 261
 262 static int hostapd_set_sta_vlan(const char *ifname, struct hostapd_data *hapd,
 263                                 const u8 *addr, int vlan_id)
 264 {
 265         if (hapd->driver == NULL || hapd->driver->set_sta_vlan == NULL)
 266                 return 0;
 267         return hapd->driver->set_sta_vlan(hapd->drv_priv, addr, ifname,
 268                                           vlan_id);
 269 }
 270
 271
 272 static int hostapd_get_inact_sec(struct hostapd_data *hapd, const u8 *addr)
 273 {
 274         if (hapd->driver == NULL || hapd->driver->get_inact_sec == NULL)
 275                 return 0;
 276         return hapd->driver->get_inact_sec(hapd->drv_priv, addr);
 277 }
 278
 279
 280 static int hostapd_sta_deauth(struct hostapd_data *hapd, const u8 *addr,
 281                               int reason)
 282 {
 283         if (hapd->driver == NULL || hapd->driver->sta_deauth == NULL)
 284                 return 0;
 285         return hapd->driver->sta_deauth(hapd->drv_priv, hapd->own_addr, addr,
 286                                         reason);
 287 }
 288
 289
 290 static int hostapd_sta_disassoc(struct hostapd_data *hapd, const u8 *addr,
 291                                 int reason)
 292 {
 293         if (hapd->driver == NULL || hapd->driver->sta_disassoc == NULL)
 294                 return 0;
 295         return hapd->driver->sta_disassoc(hapd->drv_priv, hapd->own_addr, addr,
 296                                           reason);
 297 }
 298
 299
 300 static 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 {
 306         struct hostapd_sta_add_params params;
 307
 308         if (hapd->driver == NULL)
 309                 return 0;
 310         if (hapd->driver->sta_add == NULL)
 311                 return 0;
 312
 313         os_memset(&params, 0, sizeof(params));
 314         params.addr = addr;
 315         params.aid = aid;
 316         params.capability = capability;
 317         params.supp_rates = supp_rates;
 318         params.supp_rates_len = supp_rates_len;
 319         params.listen_interval = listen_interval;
 320         params.ht_capabilities = ht_capab;
 321         return hapd->driver->sta_add(hapd->drv_priv, &params);
 322 }
 323
 324
 325 static int hostapd_sta_remove(struct hostapd_data *hapd, const u8 *addr)
 326 {
 327         if (hapd->driver == NULL || hapd->driver->sta_remove == NULL)
 328                 return 0;
 329         return hapd->driver->sta_remove(hapd->drv_priv, addr);
 330 }
 331
 332
 333 static int hostapd_set_countermeasures(struct hostapd_data *hapd, int enabled)
 334 {
 335         if (hapd->driver == NULL ||
 336             hapd->driver->hapd_set_countermeasures == NULL)
 337                 return 0;
 338         return hapd->driver->hapd_set_countermeasures(hapd->drv_priv, enabled);
 339 }
 340
 341
 342 void hostapd_set_driver_ops(struct hostapd_driver_ops *ops)
 343 {
 344         ops->set_ap_wps_ie = hostapd_set_ap_wps_ie;
 345         ops->send_mgmt_frame = hostapd_send_mgmt_frame;
 346         ops->send_eapol = hostapd_send_eapol;
 347         ops->set_authorized = hostapd_set_authorized;
 348         ops->set_key = hostapd_set_key;
 349         ops->read_sta_data = hostapd_read_sta_data;
 350         ops->sta_clear_stats = hostapd_sta_clear_stats;
 351         ops->set_sta_flags = hostapd_set_sta_flags;
 352         ops->set_drv_ieee8021x = hostapd_set_drv_ieee8021x;
 353         ops->set_radius_acl_auth = hostapd_set_radius_acl_auth;
 354         ops->set_radius_acl_expire = hostapd_set_radius_acl_expire;
 355         ops->set_bss_params = hostapd_set_bss_params;
 356         ops->set_beacon = hostapd_set_beacon;
 357         ops->vlan_if_add = hostapd_vlan_if_add;
 358         ops->vlan_if_remove = hostapd_vlan_if_remove;
 359         ops->set_wds_sta = hostapd_set_wds_sta;
 360         ops->set_sta_vlan = hostapd_set_sta_vlan;
 361         ops->get_inact_sec = hostapd_get_inact_sec;
 362         ops->sta_deauth = hostapd_sta_deauth;
 363         ops->sta_disassoc = hostapd_sta_disassoc;
 364         ops->sta_add = hostapd_sta_add;
 365         ops->sta_remove = hostapd_sta_remove;
 366         ops->set_countermeasures = hostapd_set_countermeasures;
 367 }
 368
 369
 370 int hostapd_set_privacy(struct hostapd_data *hapd, int enabled)
 371 {
 372         if (hapd->driver == NULL || hapd->driver->set_privacy == NULL)
 373                 return 0;
 374         return hapd->driver->set_privacy(hapd->drv_priv, enabled);
 375 }
 376
 377
 378 int hostapd_set_generic_elem(struct hostapd_data *hapd, const u8 *elem,
 379                              size_t elem_len)
 380 {
 381         if (hapd->driver == NULL || hapd->driver->set_generic_elem == NULL)
 382                 return 0;
 383         return hapd->driver->set_generic_elem(hapd->drv_priv, elem, elem_len);
 384 }
 385
 386
 387 int hostapd_get_ssid(struct hostapd_data *hapd, u8 *buf, size_t len)
 388 {
 389         if (hapd->driver == NULL || hapd->driver->hapd_get_ssid == NULL)
 390                 return 0;
 391         return hapd->driver->hapd_get_ssid(hapd->drv_priv, buf, len);
 392 }
 393
 394
 395 int hostapd_set_ssid(struct hostapd_data *hapd, const u8 *buf, size_t len)
 396 {
 397         if (hapd->driver == NULL || hapd->driver->hapd_set_ssid == NULL)
 398                 return 0;
 399         return hapd->driver->hapd_set_ssid(hapd->drv_priv, buf, len);
 400 }
 401
 402
 403 int hostapd_if_add(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 404                    const char *ifname, const u8 *addr, void *bss_ctx,
 405                    void **drv_priv)
 406 {
 407         if (hapd->driver == NULL || hapd->driver->if_add == NULL)
 408                 return -1;
 409         return hapd->driver->if_add(hapd->drv_priv, type, ifname, addr,
 410                                     bss_ctx, drv_priv);
 411 }
 412
 413
 414 int hostapd_if_remove(struct hostapd_data *hapd, enum wpa_driver_if_type type,
 415                       const char *ifname)
 416 {
 417         if (hapd->driver == NULL || hapd->driver->if_remove == NULL)
 418                 return -1;
 419         return hapd->driver->if_remove(hapd->drv_priv, type, ifname);
 420 }
 421
 422
 423 int hostapd_set_ieee8021x(struct hostapd_data *hapd,
 424                           struct wpa_bss_params *params)
 425 {
 426         if (hapd->driver == NULL || hapd->driver->set_ieee8021x == NULL)
 427                 return 0;
 428         return hapd->driver->set_ieee8021x(hapd->drv_priv, params);
 429 }
 430
 431
 432 int hostapd_get_seqnum(const char *ifname, struct hostapd_data *hapd,
 433                        const u8 *addr, int idx, u8 *seq)
 434 {
 435         if (hapd->driver == NULL || hapd->driver->get_seqnum == NULL)
 436                 return 0;
 437         return hapd->driver->get_seqnum(ifname, hapd->drv_priv, addr, idx,
 438                                         seq);
 439 }
 440
 441
 442 int hostapd_flush(struct hostapd_data *hapd)
 443 {
 444         if (hapd->driver == NULL || hapd->driver->flush == NULL)
 445                 return 0;
 446         return hapd->driver->flush(hapd->drv_priv);
 447 }
 448
 449
 450 int hostapd_set_freq(struct hostapd_data *hapd, int mode, int freq,
 451                      int channel, int ht_enabled, int sec_channel_offset)
 452 {
 453         struct hostapd_freq_params data;
 454         if (hapd->driver == NULL)
 455                 return 0;
 456         if (hapd->driver->set_freq == NULL)
 457                 return 0;
 458         os_memset(&data, 0, sizeof(data));
 459         data.mode = mode;
 460         data.freq = freq;
 461         data.channel = channel;
 462         data.ht_enabled = ht_enabled;
 463         data.sec_channel_offset = sec_channel_offset;
 464         return hapd->driver->set_freq(hapd->drv_priv, &data);
 465 }
 466
 467 int hostapd_set_rts(struct hostapd_data *hapd, int rts)
 468 {
 469         if (hapd->driver == NULL || hapd->driver->set_rts == NULL)
 470                 return 0;
 471         return hapd->driver->set_rts(hapd->drv_priv, rts);
 472 }
 473
 474
 475 int hostapd_set_frag(struct hostapd_data *hapd, int frag)
 476 {
 477         if (hapd->driver == NULL || hapd->driver->set_frag == NULL)
 478                 return 0;
 479         return hapd->driver->set_frag(hapd->drv_priv, frag);
 480 }
 481
 482
 483 int hostapd_sta_set_flags(struct hostapd_data *hapd, u8 *addr,
 484                           int total_flags, int flags_or, int flags_and)
 485 {
 486         if (hapd->driver == NULL || hapd->driver->sta_set_flags == NULL)
 487                 return 0;
 488         return hapd->driver->sta_set_flags(hapd->drv_priv, addr, total_flags,
 489                                            flags_or, flags_and);
 490 }
 491
 492
 493 int hostapd_set_rate_sets(struct hostapd_data *hapd, int *supp_rates,
 494                           int *basic_rates, int mode)
 495 {
 496         if (hapd->driver == NULL || hapd->driver->set_rate_sets == NULL)
 497                 return 0;
 498         return hapd->driver->set_rate_sets(hapd->drv_priv, supp_rates,
 499                                            basic_rates, mode);
 500 }
 501
 502
 503 int hostapd_set_country(struct hostapd_data *hapd, const char *country)
 504 {
 505         if (hapd->driver == NULL ||
 506             hapd->driver->set_country == NULL)
 507                 return 0;
 508         return hapd->driver->set_country(hapd->drv_priv, country);
 509 }
 510
 511
 512 int hostapd_set_cts_protect(struct hostapd_data *hapd, int value)
 513 {
 514         if (hapd->driver == NULL || hapd->driver->set_cts_protect == NULL)
 515                 return 0;
 516         return hapd->driver->set_cts_protect(hapd->drv_priv, value);
 517 }
 518
 519
 520 int hostapd_set_preamble(struct hostapd_data *hapd, int value)
 521 {
 522         if (hapd->driver == NULL || hapd->driver->set_preamble == NULL)
 523                 return 0;
 524         return hapd->driver->set_preamble(hapd->drv_priv, value);
 525 }
 526
 527
 528 int hostapd_set_short_slot_time(struct hostapd_data *hapd, int value)
 529 {
 530         if (hapd->driver == NULL || hapd->driver->set_short_slot_time == NULL)
 531                 return 0;
 532         return hapd->driver->set_short_slot_time(hapd->drv_priv, value);
 533 }
 534
 535
 536 int hostapd_set_tx_queue_params(struct hostapd_data *hapd, int queue, int aifs,
 537                                 int cw_min, int cw_max, int burst_time)
 538 {
 539         if (hapd->driver == NULL || hapd->driver->set_tx_queue_params == NULL)
 540                 return 0;
 541         return hapd->driver->set_tx_queue_params(hapd->drv_priv, queue, aifs,
 542                                                  cw_min, cw_max, burst_time);
 543 }
 544
 545
 546 int hostapd_valid_bss_mask(struct hostapd_data *hapd, const u8 *addr,
 547                            const u8 *mask)
 548 {
 549         if (hapd->driver == NULL || hapd->driver->valid_bss_mask == NULL)
 550                 return 1;
 551         return hapd->driver->valid_bss_mask(hapd->drv_priv, addr, mask);
 552 }
 553
 554
 555 struct hostapd_hw_modes *
 556 hostapd_get_hw_feature_data(struct hostapd_data *hapd, u16 *num_modes,
 557                             u16 *flags)
 558 {
 559         if (hapd->driver == NULL ||
 560             hapd->driver->get_hw_feature_data == NULL)
 561                 return NULL;
 562         return hapd->driver->get_hw_feature_data(hapd->drv_priv, num_modes,
 563                                                  flags);
 564 }
 565
 566
 567 int hostapd_driver_commit(struct hostapd_data *hapd)
 568 {
 569         if (hapd->driver == NULL || hapd->driver->commit == NULL)
 570                 return 0;
 571         return hapd->driver->commit(hapd->drv_priv);
 572 }
 573
 574
 575 int hostapd_set_ht_params(struct hostapd_data *hapd,
 576                           const u8 *ht_capab, size_t ht_capab_len,
 577                           const u8 *ht_oper, size_t ht_oper_len)
 578 {
 579         if (hapd->driver == NULL || hapd->driver->set_ht_params == NULL ||
 580             ht_capab == NULL || ht_oper == NULL)
 581                 return 0;
 582         return hapd->driver->set_ht_params(hapd->drv_priv,
 583                                            ht_capab, ht_capab_len,
 584                                            ht_oper, ht_oper_len);
 585 }
 586
 587
 588 int hostapd_drv_none(struct hostapd_data *hapd)
 589 {
 590         return hapd->driver && os_strcmp(hapd->driver->name, "none") == 0;
 591 }
 592
 593
 594 int hostapd_driver_scan(struct hostapd_data *hapd,
 595                         struct wpa_driver_scan_params *params)
 596 {
 597         if (hapd->driver && hapd->driver->scan2)
 598                 return hapd->driver->scan2(hapd->drv_priv, params);
 599         return -1;
 600 }
 601
 602
 603 struct wpa_scan_results * hostapd_driver_get_scan_results(
 604         struct hostapd_data *hapd)
 605 {
 606         if (hapd->driver && hapd->driver->get_scan_results2)
 607                 return hapd->driver->get_scan_results2(hapd->drv_priv);
 608         return NULL;
 609 }