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         int (*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 struct hostapd_frame_info {
  44         u32 channel;
  45         u32 datarate;
  46         u32 ssi_signal;
  47 };
  48
  49
  50 struct hostapd_driver_ops {
  51         int (*set_ap_wps_ie)(struct hostapd_data *hapd,
  52                              const struct wpabuf *beacon,
  53                              const struct wpabuf *probe);
  54         int (*send_mgmt_frame)(struct hostapd_data *hapd, const void *msg,
  55                                size_t len);
  56         int (*send_eapol)(struct hostapd_data *hapd, const u8 *addr,
  57                           const u8 *data, size_t data_len, int encrypt);
  58         int (*set_authorized)(struct hostapd_data *hapd, struct sta_info *sta,
  59                               int authorized);
  60         int (*set_key)(const char *ifname, struct hostapd_data *hapd,
  61                        enum wpa_alg alg, const u8 *addr, int key_idx,
  62                        int set_tx, const u8 *seq, size_t seq_len,
  63                        const u8 *key, size_t key_len);
  64         int (*read_sta_data)(struct hostapd_data *hapd,
  65                              struct hostap_sta_driver_data *data,
  66                              const u8 *addr);
  67         int (*sta_clear_stats)(struct hostapd_data *hapd, const u8 *addr);
  68         int (*set_sta_flags)(struct hostapd_data *hapd, struct sta_info *sta);
  69         int (*set_drv_ieee8021x)(struct hostapd_data *hapd, const char *ifname,
  70                                  int enabled);
  71         int (*set_radius_acl_auth)(struct hostapd_data *hapd,
  72                                    const u8 *mac, int accepted,
  73                                    u32 session_timeout);
  74         int (*set_radius_acl_expire)(struct hostapd_data *hapd,
  75                                      const u8 *mac);
  76         int (*set_bss_params)(struct hostapd_data *hapd, int use_protection);
  77         int (*set_beacon)(struct hostapd_data *hapd,
  78                           const u8 *head, size_t head_len,
  79                           const u8 *tail, size_t tail_len, int dtim_period,
  80                           int beacon_int);
  81         int (*vlan_if_add)(struct hostapd_data *hapd, const char *ifname);
  82         int (*vlan_if_remove)(struct hostapd_data *hapd, const char *ifname);
  83         int (*set_wds_sta)(struct hostapd_data *hapd, const u8 *addr, int aid,
  84                            int val);
  85         int (*set_sta_vlan)(const char *ifname, struct hostapd_data *hapd,
  86                             const u8 *addr, int vlan_id);
  87         int (*get_inact_sec)(struct hostapd_data *hapd, const u8 *addr);
  88         int (*sta_deauth)(struct hostapd_data *hapd, const u8 *addr,
  89                           int reason);
  90         int (*sta_disassoc)(struct hostapd_data *hapd, const u8 *addr,
  91                             int reason);
  92         int (*sta_add)(struct hostapd_data *hapd,
  93                        const u8 *addr, u16 aid, u16 capability,
  94                        const u8 *supp_rates, size_t supp_rates_len,
  95                        u16 listen_interval,
  96                        const struct ieee80211_ht_capabilities *ht_capab);
  97         int (*sta_remove)(struct hostapd_data *hapd, const u8 *addr);
  98         int (*set_countermeasures)(struct hostapd_data *hapd, int enabled);
  99 };
 100
 101 /**
 102  * struct hostapd_data - hostapd per-BSS data structure
 103  */
 104 struct hostapd_data {
 105         struct hostapd_iface *iface;
 106         struct hostapd_config *iconf;
 107         struct hostapd_bss_config *conf;
 108         int interface_added; /* virtual interface added for this BSS */
 109
 110         u8 own_addr[ETH_ALEN];
 111
 112         int num_sta; /* number of entries in sta_list */
 113         struct sta_info *sta_list; /* STA info list head */
 114 #define STA_HASH_SIZE 256
 115 #define STA_HASH(sta) (sta[5])
 116         struct sta_info *sta_hash[STA_HASH_SIZE];
 117
 118         /*
 119          * Bitfield for indicating which AIDs are allocated. Only AID values
 120          * 1-2007 are used and as such, the bit at index 0 corresponds to AID
 121          * 1.
 122          */
 123 #define AID_WORDS ((2008 + 31) / 32)
 124         u32 sta_aid[AID_WORDS];
 125
 126         const struct wpa_driver_ops *driver;
 127         void *drv_priv;
 128         struct hostapd_driver_ops drv;
 129
 130         void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
 131                                  struct sta_info *sta, int reassoc);
 132
 133         void *msg_ctx; /* ctx for wpa_msg() calls */
 134
 135         struct radius_client_data *radius;
 136         u32 acct_session_id_hi, acct_session_id_lo;
 137
 138         struct iapp_data *iapp;
 139
 140         struct hostapd_cached_radius_acl *acl_cache;
 141         struct hostapd_acl_query_data *acl_queries;
 142
 143         struct wpa_authenticator *wpa_auth;
 144         struct eapol_authenticator *eapol_auth;
 145
 146         struct rsn_preauth_interface *preauth_iface;
 147         time_t michael_mic_failure;
 148         int michael_mic_failures;
 149         int tkip_countermeasures;
 150
 151         int ctrl_sock;
 152         struct wpa_ctrl_dst *ctrl_dst;
 153
 154         void *ssl_ctx;
 155         void *eap_sim_db_priv;
 156         struct radius_server_data *radius_srv;
 157
 158         int parameter_set_count;
 159
 160 #ifdef CONFIG_FULL_DYNAMIC_VLAN
 161         struct full_dynamic_vlan *full_dynamic_vlan;
 162 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
 163
 164         struct l2_packet_data *l2;
 165         struct wps_context *wps;
 166
 167 #ifdef CONFIG_WPS
 168         struct wpabuf *wps_beacon_ie;
 169         struct wpabuf *wps_probe_resp_ie;
 170         unsigned int ap_pin_failures;
 171         struct upnp_wps_device_sm *wps_upnp;
 172 #endif /* CONFIG_WPS */
 173
 174         struct hostapd_probereq_cb *probereq_cb;
 175         size_t num_probereq_cb;
 176 };
 177
 178
 179 /**
 180  * struct hostapd_iface - hostapd per-interface data structure
 181  */
 182 struct hostapd_iface {
 183         struct hapd_interfaces *interfaces;
 184         void *owner;
 185         int (*reload_config)(struct hostapd_iface *iface);
 186         struct hostapd_config * (*config_read_cb)(const char *config_fname);
 187         char *config_fname;
 188         struct hostapd_config *conf;
 189
 190         size_t num_bss;
 191         struct hostapd_data **bss;
 192
 193         int num_ap; /* number of entries in ap_list */
 194         struct ap_info *ap_list; /* AP info list head */
 195         struct ap_info *ap_hash[STA_HASH_SIZE];
 196         struct ap_info *ap_iter_list;
 197
 198         struct hostapd_hw_modes *hw_features;
 199         int num_hw_features;
 200         struct hostapd_hw_modes *current_mode;
 201         /* Rates that are currently used (i.e., filtered copy of
 202          * current_mode->channels */
 203         int num_rates;
 204         struct hostapd_rate_data *current_rates;
 205
 206         u16 hw_flags;
 207
 208         /* Number of associated Non-ERP stations (i.e., stations using 802.11b
 209          * in 802.11g BSS) */
 210         int num_sta_non_erp;
 211
 212         /* Number of associated stations that do not support Short Slot Time */
 213         int num_sta_no_short_slot_time;
 214
 215         /* Number of associated stations that do not support Short Preamble */
 216         int num_sta_no_short_preamble;
 217
 218         int olbc; /* Overlapping Legacy BSS Condition */
 219
 220         /* Number of HT associated stations that do not support greenfield */
 221         int num_sta_ht_no_gf;
 222
 223         /* Number of associated non-HT stations */
 224         int num_sta_no_ht;
 225
 226         /* Number of HT associated stations 20 MHz */
 227         int num_sta_ht_20mhz;
 228
 229         /* Overlapping BSS information */
 230         int olbc_ht;
 231
 232         u16 ht_op_mode;
 233         void (*scan_cb)(struct hostapd_iface *iface);
 234
 235         int (*ctrl_iface_init)(struct hostapd_data *hapd);
 236         void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
 237
 238         int (*for_each_interface)(struct hapd_interfaces *interfaces,
 239                                   int (*cb)(struct hostapd_iface *iface,
 240                                             void *ctx), void *ctx);
 241 };
 242
 243 /* hostapd.c */
 244 int hostapd_reload_config(struct hostapd_iface *iface);
 245 struct hostapd_data *
 246 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
 247                        struct hostapd_config *conf,
 248                        struct hostapd_bss_config *bss);
 249 int hostapd_setup_interface(struct hostapd_iface *iface);
 250 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
 251 void hostapd_interface_deinit(struct hostapd_iface *iface);
 252 void hostapd_interface_free(struct hostapd_iface *iface);
 253 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
 254                            int reassoc);
 255
 256 /* utils.c */
 257 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
 258                                  int (*cb)(void *ctx, const u8 *sa,
 259                                            const u8 *ie, size_t ie_len),
 260                                  void *ctx);
 261 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
 262
 263 /* drv_callbacks.c (TODO: move to somewhere else?) */
 264 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
 265                         const u8 *ie, size_t ielen);
 266 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr);
 267
 268 #endif /* HOSTAPD_H */