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 "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 #include "ap_drv_ops.h"
  23
  24
  25 static int hostapd_sta_flags_to_drv(int flags)
  26 {
  27         int res = 0;
  28         if (flags & WLAN_STA_AUTHORIZED)
  29                 res |= WPA_STA_AUTHORIZED;
  30         if (flags & WLAN_STA_WMM)
  31                 res |= WPA_STA_WMM;
  32         if (flags & WLAN_STA_SHORT_PREAMBLE)
  33                 res |= WPA_STA_SHORT_PREAMBLE;
  34         if (flags & WLAN_STA_MFP)
  35                 res |= WPA_STA_MFP;
  36         return res;
  37 }
  38
  39
  40 static int hostapd_set_ap_wps_ie(struct hostapd_data *hapd,
  41                                  const struct wpabuf *beacon,
  42                                  const struct wpabuf *proberesp)
  43 {
  44         if (hapd->driver == NULL || hapd->driver->set_ap_wps_ie == NULL)
  45                 return 0;
  46         return hapd->driver->set_ap_wps_ie(hapd->conf->iface, hapd->drv_priv,
  47                                            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                            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->conf->iface, hapd,
 189                                   ht_capab + 2, ht_capab[1],
 190                                   ht_oper + 2, ht_oper[1])) {
 191                 wpa_printf(MSG_ERROR, "Could not set HT capabilities "
 192                            "for kernel driver");
 193                 ret = -1;
 194         }
 195
 196 #endif /* CONFIG_IEEE80211N */
 197
 198         if (hostapd_set_cts_protect(hapd, use_protection)) {
 199                 wpa_printf(MSG_ERROR, "Failed to set CTS protect in kernel "
 200                            "driver");
 201                 ret = -1;
 202         }
 203
 204         if (hapd->iface->current_mode &&
 205             hapd->iface->current_mode->mode == HOSTAPD_MODE_IEEE80211G &&
 206             hostapd_set_short_slot_time(hapd,
 207                                         hapd->iface->num_sta_no_short_slot_time
 208                                         > 0 ? 0 : 1)) {
 209                 wpa_printf(MSG_ERROR, "Failed to set Short Slot Time option "
 210                            "in kernel driver");
 211                 ret = -1;
 212         }
 213
 214         if (hapd->iface->num_sta_no_short_preamble == 0 &&
 215             hapd->iconf->preamble == SHORT_PREAMBLE)
 216                 preamble = SHORT_PREAMBLE;
 217         else
 218                 preamble = LONG_PREAMBLE;
 219         if (hostapd_set_preamble(hapd, preamble)) {
 220                 wpa_printf(MSG_ERROR, "Could not set preamble for kernel "
 221                            "driver");
 222                 ret = -1;
 223         }
 224
 225         return ret;
 226 }
 227
 228
 229 static int hostapd_set_beacon(const char *ifname, struct hostapd_data *hapd,
 230                               const u8 *head, size_t head_len,
 231                               const u8 *tail, size_t tail_len, int dtim_period,
 232                               int beacon_int)
 233 {
 234         if (hapd->driver == NULL || hapd->driver->set_beacon == NULL)
 235                 return 0;
 236         return hapd->driver->set_beacon(ifname, hapd->drv_priv,
 237                                         head, head_len, tail, tail_len,
 238                                         dtim_period, beacon_int);
 239 }
 240
 241
 242 static int hostapd_vlan_if_add(struct hostapd_data *hapd, const char *ifname)
 243 {
 244         return hostapd_if_add(hapd, WPA_IF_AP_VLAN, ifname, NULL, NULL);
 245 }
 246
 247 static int hostapd_vlan_if_remove(struct hostapd_data *hapd,
 248                                   const char *ifname)
 249 {
 250         return hostapd_if_remove(hapd, WPA_IF_AP_VLAN, ifname);
 251 }
 252
 253
 254 static int hostapd_set_wds_sta(struct hostapd_data *hapd, const u8 *addr,
 255                                int aid, int val)
 256 {
 257         if (hapd->driver == NULL || hapd->driver->set_wds_sta == NULL)
 258                 return 0;
 259         return hapd->driver->set_wds_sta(hapd->drv_priv, addr, aid, val);
 260 }
 261
 262
 263 static int hostapd_set_sta_vlan(const char *ifname, struct hostapd_data *hapd,
 264                                 const u8 *addr, int vlan_id)
 265 {
 266         if (hapd->driver == NULL || hapd->driver->set_sta_vlan == NULL)
 267                 return 0;
 268         return hapd->driver->set_sta_vlan(hapd->drv_priv, addr, ifname,
 269                                           vlan_id);
 270 }
 271
 272
 273 static int hostapd_get_inact_sec(struct hostapd_data *hapd, const u8 *addr)
 274 {
 275         if (hapd->driver == NULL || hapd->driver->get_inact_sec == NULL)
 276                 return 0;
 277         return hapd->driver->get_inact_sec(hapd->drv_priv, addr);
 278 }
 279
 280
 281 static int hostapd_sta_deauth(struct hostapd_data *hapd, const u8 *addr,
 282                               int reason)
 283 {
 284         if (hapd->driver == NULL || hapd->driver->sta_deauth == NULL)
 285                 return 0;
 286         return hapd->driver->sta_deauth(hapd->drv_priv, hapd->own_addr, addr,
 287                                         reason);
 288 }
 289
 290
 291 static int hostapd_sta_disassoc(struct hostapd_data *hapd, const u8 *addr,
 292                                 int reason)
 293 {
 294         if (hapd->driver == NULL || hapd->driver->sta_disassoc == NULL)
 295                 return 0;
 296         return hapd->driver->sta_disassoc(hapd->drv_priv, hapd->own_addr, addr,
 297                                           reason);
 298 }
 299
 300
 301 static int hostapd_sta_add(const char *ifname, struct hostapd_data *hapd,
 302                            const u8 *addr, u16 aid, u16 capability,
 303                            const u8 *supp_rates, size_t supp_rates_len,
 304                            u16 listen_interval,
 305                            const struct ieee80211_ht_capabilities *ht_capab)
 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         return hapd->driver->sta_add(ifname, hapd->drv_priv, &params);
 323 }
 324
 325
 326 static int hostapd_sta_remove(struct hostapd_data *hapd, const u8 *addr)
 327 {
 328         if (hapd->driver == NULL || hapd->driver->sta_remove == NULL)
 329                 return 0;
 330         return hapd->driver->sta_remove(hapd->drv_priv, addr);
 331 }
 332
 333
 334 static int hostapd_set_countermeasures(struct hostapd_data *hapd, int enabled)
 335 {
 336         if (hapd->driver == NULL ||
 337             hapd->driver->hapd_set_countermeasures == NULL)
 338                 return 0;
 339         return hapd->driver->hapd_set_countermeasures(hapd->drv_priv, enabled);
 340 }
 341
 342
 343 void hostapd_set_driver_ops(struct hostapd_driver_ops *ops)
 344 {
 345         ops->set_ap_wps_ie = hostapd_set_ap_wps_ie;
 346         ops->send_mgmt_frame = hostapd_send_mgmt_frame;
 347         ops->send_eapol = hostapd_send_eapol;
 348         ops->set_authorized = hostapd_set_authorized;
 349         ops->set_key = hostapd_set_key;
 350         ops->read_sta_data = hostapd_read_sta_data;
 351         ops->sta_clear_stats = hostapd_sta_clear_stats;
 352         ops->set_sta_flags = hostapd_set_sta_flags;
 353         ops->set_drv_ieee8021x = hostapd_set_drv_ieee8021x;
 354         ops->set_radius_acl_auth = hostapd_set_radius_acl_auth;
 355         ops->set_radius_acl_expire = hostapd_set_radius_acl_expire;
 356         ops->set_bss_params = hostapd_set_bss_params;
 357         ops->set_beacon = hostapd_set_beacon;
 358         ops->vlan_if_add = hostapd_vlan_if_add;
 359         ops->vlan_if_remove = hostapd_vlan_if_remove;
 360         ops->set_wds_sta = hostapd_set_wds_sta;
 361         ops->set_sta_vlan = hostapd_set_sta_vlan;
 362         ops->get_inact_sec = hostapd_get_inact_sec;
 363         ops->sta_deauth = hostapd_sta_deauth;
 364         ops->sta_disassoc = hostapd_sta_disassoc;
 365         ops->sta_add = hostapd_sta_add;
 366         ops->sta_remove = hostapd_sta_remove;
 367         ops->set_countermeasures = hostapd_set_countermeasures;
 368 }