src/ap/hostapd.h

   1 /*
   2  * hostapd / Initialization and configuration
   3  * Copyright (c) 2002-2009, 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 #ifndef HOSTAPD_H
  16 #define HOSTAPD_H
  17
  18 #include "common/defs.h"
  19
  20 struct wpa_driver_ops;
  21 struct wpa_ctrl_dst;
  22 struct radius_server_data;
  23 struct upnp_wps_device_sm;
  24 struct hapd_interfaces;
  25 struct hostapd_data;
  26 struct sta_info;
  27 struct hostap_sta_driver_data;
  28 struct ieee80211_ht_capabilities;
  29 struct full_dynamic_vlan;
  30
  31 struct hostapd_probereq_cb {
  32         void (*cb)(void *ctx, const u8 *sa, const u8 *ie, size_t ie_len);
  33         void *ctx;
  34 };
  35
  36 #define HOSTAPD_RATE_BASIC 0x00000001
  37
  38 struct hostapd_rate_data {
  39         int rate; /* rate in 100 kbps */
  40         int flags; /* HOSTAPD_RATE_ flags */
  41 };
  42
  43
  44 struct hostapd_driver_ops {
  45         int (*set_ap_wps_ie)(struct hostapd_data *hapd,
  46                              const struct wpabuf *beacon,
  47                              const struct wpabuf *probe);
  48         int (*send_mgmt_frame)(struct hostapd_data *hapd, const void *msg,
  49                                size_t len);
  50         int (*send_eapol)(struct hostapd_data *hapd, const u8 *addr,
  51                           const u8 *data, size_t data_len, int encrypt);
  52         int (*set_authorized)(struct hostapd_data *hapd, struct sta_info *sta,
  53                               int authorized);
  54         int (*set_key)(const char *ifname, struct hostapd_data *hapd,
  55                        wpa_alg alg, const u8 *addr, int key_idx,
  56                        int set_tx, const u8 *seq, size_t seq_len,
  57                        const u8 *key, size_t key_len);
  58         int (*read_sta_data)(struct hostapd_data *hapd,
  59                              struct hostap_sta_driver_data *data,
  60                              const u8 *addr);
  61         int (*sta_clear_stats)(struct hostapd_data *hapd, const u8 *addr);
  62         int (*set_sta_flags)(struct hostapd_data *hapd, struct sta_info *sta);
  63         int (*set_drv_ieee8021x)(struct hostapd_data *hapd, const char *ifname,
  64                                  int enabled);
  65         int (*set_radius_acl_auth)(struct hostapd_data *hapd,
  66                                    const u8 *mac, int accepted,
  67                                    u32 session_timeout);
  68         int (*set_radius_acl_expire)(struct hostapd_data *hapd,
  69                                      const u8 *mac);
  70         int (*set_bss_params)(struct hostapd_data *hapd, int use_protection);
  71         int (*set_beacon)(const char *ifname, struct hostapd_data *hapd,
  72                           const u8 *head, size_t head_len,
  73                           const u8 *tail, size_t tail_len, int dtim_period,
  74                           int beacon_int);
  75         int (*vlan_if_add)(struct hostapd_data *hapd, const char *ifname);
  76         int (*vlan_if_remove)(struct hostapd_data *hapd, const char *ifname);
  77         int (*set_wds_sta)(struct hostapd_data *hapd, const u8 *addr, int aid,
  78                            int val);
  79         int (*set_sta_vlan)(const char *ifname, struct hostapd_data *hapd,
  80                             const u8 *addr, int vlan_id);
  81         int (*get_inact_sec)(struct hostapd_data *hapd, const u8 *addr);
  82         int (*sta_deauth)(struct hostapd_data *hapd, const u8 *addr,
  83                           int reason);
  84         int (*sta_disassoc)(struct hostapd_data *hapd, const u8 *addr,
  85                             int reason);
  86         int (*sta_add)(const char *ifname, struct hostapd_data *hapd,
  87                        const u8 *addr, u16 aid, u16 capability,
  88                        const u8 *supp_rates, size_t supp_rates_len,
  89                        u16 listen_interval,
  90                        const struct ieee80211_ht_capabilities *ht_capab);
  91         int (*sta_remove)(struct hostapd_data *hapd, const u8 *addr);
  92         int (*set_countermeasures)(struct hostapd_data *hapd, int enabled);
  93 };
  94
  95 /**
  96  * struct hostapd_data - hostapd per-BSS data structure
  97  */
  98 struct hostapd_data {
  99         struct hostapd_iface *iface;
 100         struct hostapd_config *iconf;
 101         struct hostapd_bss_config *conf;
 102         int interface_added; /* virtual interface added for this BSS */
 103
 104         u8 own_addr[ETH_ALEN];
 105
 106         int num_sta; /* number of entries in sta_list */
 107         struct sta_info *sta_list; /* STA info list head */
 108 #define STA_HASH_SIZE 256
 109 #define STA_HASH(sta) (sta[5])
 110         struct sta_info *sta_hash[STA_HASH_SIZE];
 111
 112         /*
 113          * Bitfield for indicating which AIDs are allocated. Only AID values
 114          * 1-2007 are used and as such, the bit at index 0 corresponds to AID
 115          * 1.
 116          */
 117 #define AID_WORDS ((2008 + 31) / 32)
 118         u32 sta_aid[AID_WORDS];
 119
 120         const struct wpa_driver_ops *driver;
 121         void *drv_priv;
 122         struct hostapd_driver_ops drv;
 123
 124         void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
 125                                  struct sta_info *sta, int reassoc);
 126
 127         void *msg_ctx; /* ctx for wpa_msg() calls */
 128
 129         struct radius_client_data *radius;
 130         u32 acct_session_id_hi, acct_session_id_lo;
 131
 132         struct iapp_data *iapp;
 133
 134         struct hostapd_cached_radius_acl *acl_cache;
 135         struct hostapd_acl_query_data *acl_queries;
 136
 137         struct wpa_authenticator *wpa_auth;
 138         struct eapol_authenticator *eapol_auth;
 139
 140         struct rsn_preauth_interface *preauth_iface;
 141         time_t michael_mic_failure;
 142         int michael_mic_failures;
 143         int tkip_countermeasures;
 144
 145         int ctrl_sock;
 146         struct wpa_ctrl_dst *ctrl_dst;
 147
 148         void *ssl_ctx;
 149         void *eap_sim_db_priv;
 150         struct radius_server_data *radius_srv;
 151
 152         int parameter_set_count;
 153
 154 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 155         struct full_dynamic_vlan *full_dynamic_vlan;
 156 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 157
 158         struct l2_packet_data *l2;
 159         struct wps_context *wps;
 160
 161 #ifdef CONFIG_WPS
 162         struct wpabuf *wps_beacon_ie;
 163         struct wpabuf *wps_probe_resp_ie;
 164         unsigned int ap_pin_failures;
 165         struct upnp_wps_device_sm *wps_upnp;
 166 #endif /* CONFIG_WPS */
 167
 168         struct hostapd_probereq_cb *probereq_cb;
 169         size_t num_probereq_cb;
 170 };
 171
 172
 173 /**
 174  * struct hostapd_iface - hostapd per-interface data structure
 175  */
 176 struct hostapd_iface {
 177         struct hapd_interfaces *interfaces;
 178         void *owner;
 179         int (*reload_config)(struct hostapd_iface *iface);
 180         struct hostapd_config * (*config_read_cb)(const char *config_fname);
 181         char *config_fname;
 182         struct hostapd_config *conf;
 183
 184         size_t num_bss;
 185         struct hostapd_data **bss;
 186
 187         int num_ap; /* number of entries in ap_list */
 188         struct ap_info *ap_list; /* AP info list head */
 189         struct ap_info *ap_hash[STA_HASH_SIZE];
 190         struct ap_info *ap_iter_list;
 191
 192         struct hostapd_hw_modes *hw_features;
 193         int num_hw_features;
 194         struct hostapd_hw_modes *current_mode;
 195         /* Rates that are currently used (i.e., filtered copy of
 196          * current_mode->channels */
 197         int num_rates;
 198         struct hostapd_rate_data *current_rates;
 199
 200         u16 hw_flags;
 201
 202         /* Number of associated Non-ERP stations (i.e., stations using 802.11b
 203          * in 802.11g BSS) */
 204         int num_sta_non_erp;
 205
 206         /* Number of associated stations that do not support Short Slot Time */
 207         int num_sta_no_short_slot_time;
 208
 209         /* Number of associated stations that do not support Short Preamble */
 210         int num_sta_no_short_preamble;
 211
 212         int olbc; /* Overlapping Legacy BSS Condition */
 213
 214         /* Number of HT associated stations that do not support greenfield */
 215         int num_sta_ht_no_gf;
 216
 217         /* Number of associated non-HT stations */
 218         int num_sta_no_ht;
 219
 220         /* Number of HT associated stations 20 MHz */
 221         int num_sta_ht_20mhz;
 222
 223         /* Overlapping BSS information */
 224         int olbc_ht;
 225
 226         u16 ht_op_mode;
 227         void (*scan_cb)(struct hostapd_iface *iface);
 228
 229         int (*ctrl_iface_init)(struct hostapd_data *hapd);
 230         void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
 231 };
 232
 233 /* hostapd.c */
 234 int hostapd_reload_config(struct hostapd_iface *iface);
 235 struct hostapd_data *
 236 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
 237                        struct hostapd_config *conf,
 238                        struct hostapd_bss_config *bss);
 239 int hostapd_setup_interface(struct hostapd_iface *iface);
 240 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
 241 void hostapd_interface_deinit(struct hostapd_iface *iface);
 242 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 243                            int reassoc);
 244
 245 /* main.c */
 246 int hostapd_for_each_interface(struct hapd_interfaces *interfaces,
 247                                int (*cb)(struct hostapd_iface *iface,
 248                                          void *ctx), void *ctx);
 249
 250 /* utils.c */
 251 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
 252                                  void (*cb)(void *ctx, const u8 *sa,
 253                                             const u8 *ie, size_t ie_len),
 254                                  void *ctx);
 255 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
 256
 257 #endif /* HOSTAPD_H */