hostapd/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 "includes.h"
  16
  17 #include "common.h"
  18 #include "ap/hostapd.h"
  19 #include "ap/ieee802_11.h"
  20 #include "ap/sta_info.h"
  21 #include "driver_i.h"
  22
  23
  24 static int hostapd_sta_flags_to_drv(int flags)
  25 {
  26         int res = 0;
  27         if (flags & WLAN_STA_AUTHORIZED)
  28                 res |= WPA_STA_AUTHORIZED;
  29         if (flags & WLAN_STA_WMM)
  30                 res |= WPA_STA_WMM;
  31         if (flags & WLAN_STA_SHORT_PREAMBLE)
  32                 res |= WPA_STA_SHORT_PREAMBLE;
  33         if (flags & WLAN_STA_MFP)
  34                 res |= WPA_STA_MFP;
  35         return res;
  36 }
  37
  38
  39 static int hostapd_set_ap_wps_ie(struct hostapd_data *hapd,
  40                                  const struct wpabuf *beacon,
  41                                  const struct wpabuf *proberesp)
  42 {
  43         if (hapd->driver == NULL || hapd->driver->set_ap_wps_ie == NULL)
  44                 return 0;
  45         return hapd->driver->set_ap_wps_ie(hapd->conf->iface, hapd->drv_priv,
  46                                            beacon, proberesp);
  47 }
  48
  49
  50 static int hostapd_send_mgmt_frame(struct hostapd_data *hapd, const void *msg,
  51                            size_t len)
  52 {
  53         if (hapd->driver == NULL || hapd->driver->send_mlme == NULL)
  54                 return 0;
  55         return hapd->driver->send_mlme(hapd->drv_priv, msg, len);
  56 }
  57
  58
  59 static int hostapd_send_eapol(struct hostapd_data *hapd, const u8 *addr,
  60                               const u8 *data, size_t data_len, int encrypt)
  61 {
  62         if (hapd->driver == NULL || hapd->driver->hapd_send_eapol == NULL)
  63                 return 0;
  64         return hapd->driver->hapd_send_eapol(hapd->drv_priv, addr, data,
  65                                              data_len, encrypt,
  66                                              hapd->own_addr);
  67 }
  68
  69
  70 static int hostapd_set_authorized(struct hostapd_data *hapd,
  71                                   struct sta_info *sta, int authorized)
  72 {
  73         if (authorized) {
  74                 return hostapd_sta_set_flags(hapd, sta->addr,
  75                                              hostapd_sta_flags_to_drv(
  76                                                      sta->flags),
  77                                              WPA_STA_AUTHORIZED, ~0);
  78         }
  79
  80         return hostapd_sta_set_flags(hapd, sta->addr,
  81                                      hostapd_sta_flags_to_drv(sta->flags),
  82                                      0, ~WPA_STA_AUTHORIZED);
  83 }
  84
  85
  86 static int hostapd_set_key(const char *ifname, struct hostapd_data *hapd,
  87                            wpa_alg alg, const u8 *addr, int key_idx,
  88                            int set_tx, const u8 *seq, size_t seq_len,
  89                            const u8 *key, size_t key_len)
  90 {
  91         if (hapd->driver == NULL || hapd->driver->set_key == NULL)
  92                 return 0;
  93         return hapd->driver->set_key(ifname, hapd->drv_priv, alg, addr,
  94                                      key_idx, set_tx, seq, seq_len, key,
  95                                      key_len);
  96 }
  97
  98
  99 static int hostapd_read_sta_data(struct hostapd_data *hapd,
 100                                  struct hostap_sta_driver_data *data,
 101                                  const u8 *addr)
 102 {
 103         if (hapd->driver == NULL || hapd->driver->read_sta_data == NULL)
 104                 return -1;
 105         return hapd->driver->read_sta_data(hapd->drv_priv, data, addr);
 106 }
 107
 108
 109 static int hostapd_sta_clear_stats(struct hostapd_data *hapd, const u8 *addr)
 110 {
 111         if (hapd->driver == NULL || hapd->driver->sta_clear_stats == NULL)
 112                 return 0;
 113         return hapd->driver->sta_clear_stats(hapd->drv_priv, addr);
 114 }
 115
 116
 117 static int hostapd_set_sta_flags(struct hostapd_data *hapd,
 118                                  struct sta_info *sta)
 119 {
 120         int set_flags, total_flags, flags_and, flags_or;
 121         total_flags = hostapd_sta_flags_to_drv(sta->flags);
 122         set_flags = WPA_STA_SHORT_PREAMBLE | WPA_STA_WMM | WPA_STA_MFP;
 123         if (!hapd->conf->ieee802_1x && !hapd->conf->wpa &&
 124             sta->flags & WLAN_STA_AUTHORIZED)
 125                 set_flags |= WPA_STA_AUTHORIZED;
 126         flags_or = total_flags & set_flags;
 127         flags_and = total_flags | ~set_flags;
 128         return hostapd_sta_set_flags(hapd, sta->addr, total_flags,
 129                                      flags_or, flags_and);
 130 }
 131
 132
 133 static int hostapd_set_drv_ieee8021x(struct hostapd_data *hapd,
 134                                      const char *ifname, int enabled)
 135 {
 136         struct wpa_bss_params params;
 137         os_memset(&params, 0, sizeof(params));
 138         params.ifname = ifname;
 139         params.enabled = enabled;
 140         if (enabled) {
 141                 params.wpa = hapd->conf->wpa;
 142                 params.ieee802_1x = hapd->conf->ieee802_1x;
 143                 params.wpa_group = hapd->conf->wpa_group;
 144                 params.wpa_pairwise = hapd->conf->wpa_pairwise;
 145                 params.wpa_key_mgmt = hapd->conf->wpa_key_mgmt;
 146                 params.rsn_preauth = hapd->conf->rsn_preauth;
 147         }
 148         return hostapd_set_ieee8021x(hapd, &params);
 149 }
 150
 151
 152 static int hostapd_set_radius_acl_auth(struct hostapd_data *hapd,
 153                                        const u8 *mac, int accepted,
 154                                        u32 session_timeout)
 155 {
 156         if (hapd->driver == NULL || hapd->driver->set_radius_acl_auth == NULL)
 157                 return 0;
 158         return hapd->driver->set_radius_acl_auth(hapd->drv_priv, mac, accepted,
 159                                                  session_timeout);
 160 }
 161
 162
 163 static int hostapd_set_radius_acl_expire(struct hostapd_data *hapd,
 164                                          const u8 *mac)
 165 {
 166         if (hapd->driver == NULL ||
 167             hapd->driver->set_radius_acl_expire == NULL)
 168                 return 0;
 169         return hapd->driver->set_radius_acl_expire(hapd->drv_priv, mac);
 170 }
 171
 172
 173 static int hostapd_set_bss_params(struct hostapd_data *hapd,
 174                                   int use_protection)
 175 {
 176         int ret = 0;
 177         int preamble;
 178 #ifdef CONFIG_IEEE80211N
 179         u8 buf[60], *ht_capab, *ht_oper, *pos;
 180
 181         pos = buf;
 182         ht_capab = pos;
 183         pos = hostapd_eid_ht_capabilities(hapd, pos);
 184         ht_oper = pos;
 185         pos = hostapd_eid_ht_operation(hapd, pos);
 186         if (pos > ht_oper && ht_oper > ht_capab &&
 187             hostapd_set_ht_params(hapd->conf->iface, hapd,
 188                                   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(const char *ifname, 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(ifname, 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);
 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(const char *ifname, 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(ifname, 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 }