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      1 /*
      2  * hostapd / Initialization and configuration
      3  * Copyright (c) 2002-2009, Jouni Malinen <j (at) w1.fi>
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #ifndef HOSTAPD_H
     10 #define HOSTAPD_H
     11 
     12 #include "common/defs.h"
     13 
     14 struct wpa_driver_ops;
     15 struct wpa_ctrl_dst;
     16 struct radius_server_data;
     17 struct upnp_wps_device_sm;
     18 struct hapd_interfaces;
     19 struct hostapd_data;
     20 struct sta_info;
     21 struct hostap_sta_driver_data;
     22 struct ieee80211_ht_capabilities;
     23 struct full_dynamic_vlan;
     24 enum wps_event;
     25 union wps_event_data;
     26 
     27 struct hostapd_probereq_cb {
     28 	int (*cb)(void *ctx, const u8 *sa, const u8 *da, const u8 *bssid,
     29 		  const u8 *ie, size_t ie_len);
     30 	void *ctx;
     31 };
     32 
     33 #define HOSTAPD_RATE_BASIC 0x00000001
     34 
     35 struct hostapd_rate_data {
     36 	int rate; /* rate in 100 kbps */
     37 	int flags; /* HOSTAPD_RATE_ flags */
     38 };
     39 
     40 struct hostapd_frame_info {
     41 	u32 channel;
     42 	u32 datarate;
     43 	u32 ssi_signal;
     44 };
     45 
     46 
     47 /**
     48  * struct hostapd_data - hostapd per-BSS data structure
     49  */
     50 struct hostapd_data {
     51 	struct hostapd_iface *iface;
     52 	struct hostapd_config *iconf;
     53 	struct hostapd_bss_config *conf;
     54 	int interface_added; /* virtual interface added for this BSS */
     55 
     56 	u8 own_addr[ETH_ALEN];
     57 
     58 	int num_sta; /* number of entries in sta_list */
     59 	struct sta_info *sta_list; /* STA info list head */
     60 #define STA_HASH_SIZE 256
     61 #define STA_HASH(sta) (sta[5])
     62 	struct sta_info *sta_hash[STA_HASH_SIZE];
     63 
     64 	/*
     65 	 * Bitfield for indicating which AIDs are allocated. Only AID values
     66 	 * 1-2007 are used and as such, the bit at index 0 corresponds to AID
     67 	 * 1.
     68 	 */
     69 #define AID_WORDS ((2008 + 31) / 32)
     70 	u32 sta_aid[AID_WORDS];
     71 
     72 	const struct wpa_driver_ops *driver;
     73 	void *drv_priv;
     74 
     75 	void (*new_assoc_sta_cb)(struct hostapd_data *hapd,
     76 				 struct sta_info *sta, int reassoc);
     77 
     78 	void *msg_ctx; /* ctx for wpa_msg() calls */
     79 	void *msg_ctx_parent; /* parent interface ctx for wpa_msg() calls */
     80 
     81 	struct radius_client_data *radius;
     82 	u32 acct_session_id_hi, acct_session_id_lo;
     83 
     84 	struct iapp_data *iapp;
     85 
     86 	struct hostapd_cached_radius_acl *acl_cache;
     87 	struct hostapd_acl_query_data *acl_queries;
     88 
     89 	struct wpa_authenticator *wpa_auth;
     90 	struct eapol_authenticator *eapol_auth;
     91 
     92 	struct rsn_preauth_interface *preauth_iface;
     93 	time_t michael_mic_failure;
     94 	int michael_mic_failures;
     95 	int tkip_countermeasures;
     96 
     97 	int ctrl_sock;
     98 	struct wpa_ctrl_dst *ctrl_dst;
     99 
    100 	void *ssl_ctx;
    101 	void *eap_sim_db_priv;
    102 	struct radius_server_data *radius_srv;
    103 
    104 	int parameter_set_count;
    105 
    106 	/* Time Advertisement */
    107 	u8 time_update_counter;
    108 	struct wpabuf *time_adv;
    109 
    110 #ifdef CONFIG_FULL_DYNAMIC_VLAN
    111 	struct full_dynamic_vlan *full_dynamic_vlan;
    112 #endif /* CONFIG_FULL_DYNAMIC_VLAN */
    113 
    114 	struct l2_packet_data *l2;
    115 	struct wps_context *wps;
    116 
    117 	int beacon_set_done;
    118 	struct wpabuf *wps_beacon_ie;
    119 	struct wpabuf *wps_probe_resp_ie;
    120 #ifdef CONFIG_WPS
    121 	unsigned int ap_pin_failures;
    122 	unsigned int ap_pin_failures_consecutive;
    123 	struct upnp_wps_device_sm *wps_upnp;
    124 	unsigned int ap_pin_lockout_time;
    125 #endif /* CONFIG_WPS */
    126 
    127 	struct hostapd_probereq_cb *probereq_cb;
    128 	size_t num_probereq_cb;
    129 
    130 	void (*public_action_cb)(void *ctx, const u8 *buf, size_t len,
    131 				 int freq);
    132 	void *public_action_cb_ctx;
    133 
    134 	int (*vendor_action_cb)(void *ctx, const u8 *buf, size_t len,
    135 				int freq);
    136 	void *vendor_action_cb_ctx;
    137 
    138 	void (*wps_reg_success_cb)(void *ctx, const u8 *mac_addr,
    139 				   const u8 *uuid_e);
    140 	void *wps_reg_success_cb_ctx;
    141 
    142 	void (*wps_event_cb)(void *ctx, enum wps_event event,
    143 			     union wps_event_data *data);
    144 	void *wps_event_cb_ctx;
    145 
    146 	void (*sta_authorized_cb)(void *ctx, const u8 *mac_addr,
    147 				  int authorized, const u8 *p2p_dev_addr);
    148 	void *sta_authorized_cb_ctx;
    149 
    150 	void (*setup_complete_cb)(void *ctx);
    151 	void *setup_complete_cb_ctx;
    152 
    153 #ifdef CONFIG_P2P
    154 	struct p2p_data *p2p;
    155 	struct p2p_group *p2p_group;
    156 	struct wpabuf *p2p_beacon_ie;
    157 	struct wpabuf *p2p_probe_resp_ie;
    158 
    159 	/* Number of non-P2P association stations */
    160 	int num_sta_no_p2p;
    161 
    162 	/* Periodic NoA (used only when no non-P2P clients in the group) */
    163 	int noa_enabled;
    164 	int noa_start;
    165 	int noa_duration;
    166 #endif /* CONFIG_P2P */
    167 };
    168 
    169 
    170 /**
    171  * struct hostapd_iface - hostapd per-interface data structure
    172  */
    173 struct hostapd_iface {
    174 	struct hapd_interfaces *interfaces;
    175 	void *owner;
    176 	int (*reload_config)(struct hostapd_iface *iface);
    177 	struct hostapd_config * (*config_read_cb)(const char *config_fname);
    178 	char *config_fname;
    179 	struct hostapd_config *conf;
    180 
    181 	size_t num_bss;
    182 	struct hostapd_data **bss;
    183 
    184 	int num_ap; /* number of entries in ap_list */
    185 	struct ap_info *ap_list; /* AP info list head */
    186 	struct ap_info *ap_hash[STA_HASH_SIZE];
    187 	struct ap_info *ap_iter_list;
    188 
    189 	unsigned int drv_flags;
    190 
    191 	/*
    192 	 * A bitmap of supported protocols for probe response offload. See
    193 	 * struct wpa_driver_capa in driver.h
    194 	 */
    195 	unsigned int probe_resp_offloads;
    196 
    197 	struct hostapd_hw_modes *hw_features;
    198 	int num_hw_features;
    199 	struct hostapd_hw_modes *current_mode;
    200 	/* Rates that are currently used (i.e., filtered copy of
    201 	 * current_mode->channels */
    202 	int num_rates;
    203 	struct hostapd_rate_data *current_rates;
    204 	int *basic_rates;
    205 	int freq;
    206 
    207 	u16 hw_flags;
    208 
    209 	/* Number of associated Non-ERP stations (i.e., stations using 802.11b
    210 	 * in 802.11g BSS) */
    211 	int num_sta_non_erp;
    212 
    213 	/* Number of associated stations that do not support Short Slot Time */
    214 	int num_sta_no_short_slot_time;
    215 
    216 	/* Number of associated stations that do not support Short Preamble */
    217 	int num_sta_no_short_preamble;
    218 
    219 	int olbc; /* Overlapping Legacy BSS Condition */
    220 
    221 	/* Number of HT associated stations that do not support greenfield */
    222 	int num_sta_ht_no_gf;
    223 
    224 	/* Number of associated non-HT stations */
    225 	int num_sta_no_ht;
    226 
    227 	/* Number of HT associated stations 20 MHz */
    228 	int num_sta_ht_20mhz;
    229 
    230 	/* Overlapping BSS information */
    231 	int olbc_ht;
    232 
    233 	u16 ht_op_mode;
    234 	void (*scan_cb)(struct hostapd_iface *iface);
    235 
    236 	int (*ctrl_iface_init)(struct hostapd_data *hapd);
    237 	void (*ctrl_iface_deinit)(struct hostapd_data *hapd);
    238 
    239 	int (*for_each_interface)(struct hapd_interfaces *interfaces,
    240 				  int (*cb)(struct hostapd_iface *iface,
    241 					    void *ctx), void *ctx);
    242 };
    243 
    244 /* hostapd.c */
    245 int hostapd_reload_config(struct hostapd_iface *iface);
    246 struct hostapd_data *
    247 hostapd_alloc_bss_data(struct hostapd_iface *hapd_iface,
    248 		       struct hostapd_config *conf,
    249 		       struct hostapd_bss_config *bss);
    250 int hostapd_setup_interface(struct hostapd_iface *iface);
    251 int hostapd_setup_interface_complete(struct hostapd_iface *iface, int err);
    252 void hostapd_interface_deinit(struct hostapd_iface *iface);
    253 void hostapd_interface_free(struct hostapd_iface *iface);
    254 void hostapd_new_assoc_sta(struct hostapd_data *hapd, struct sta_info *sta,
    255 			   int reassoc);
    256 
    257 /* utils.c */
    258 int hostapd_register_probereq_cb(struct hostapd_data *hapd,
    259 				 int (*cb)(void *ctx, const u8 *sa,
    260 					   const u8 *da, const u8 *bssid,
    261 					   const u8 *ie, size_t ie_len),
    262 				 void *ctx);
    263 void hostapd_prune_associations(struct hostapd_data *hapd, const u8 *addr);
    264 
    265 /* drv_callbacks.c (TODO: move to somewhere else?) */
    266 int hostapd_notif_assoc(struct hostapd_data *hapd, const u8 *addr,
    267 			const u8 *ie, size_t ielen, int reassoc);
    268 void hostapd_notif_disassoc(struct hostapd_data *hapd, const u8 *addr);
    269 void hostapd_event_sta_low_ack(struct hostapd_data *hapd, const u8 *addr);
    270 int hostapd_probe_req_rx(struct hostapd_data *hapd, const u8 *sa, const u8 *da,
    271 			 const u8 *bssid, const u8 *ie, size_t ie_len);
    272 
    273 #endif /* HOSTAPD_H */
    274