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* BSS table
* Copyright (c) 2009-2010, Jouni Malinen <>
* This software may be distributed under the terms of the BSD license.
* See README for more details.
#ifndef BSS_H
#define BSS_H
struct wpa_scan_res;
* struct wpa_bss - BSS table
* @list: List entry for struct wpa_supplicant::bss
* @list_id: List entry for struct wpa_supplicant::bss_id
* @id: Unique identifier for this BSS entry
* @scan_miss_count: Number of counts without seeing this BSS
* @flags: information flags about the BSS/IBSS (WPA_BSS_*)
* @last_update_idx: Index of the last scan update
* @bssid: BSSID
* @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
* @beacon_int: beacon interval in TUs (host byte order)
* @caps: capability information field in host byte order
* @qual: signal quality
* @noise: noise level
* @level: signal level
* @tsf: Timestamp of last Beacon/Probe Response frame
* @last_update: Time of the last update (i.e., Beacon or Probe Response RX)
* @ie_len: length of the following IE field in octets (from Probe Response)
* @beacon_ie_len: length of the following Beacon IE field in octets
* This structure is used to store information about neighboring BSSes in
* generic format. It is mainly updated based on scan results from the driver.
struct wpa_bss {
struct dl_list list;
struct dl_list list_id;
unsigned int id;
unsigned int scan_miss_count;
unsigned int last_update_idx;
unsigned int flags;
u8 bssid[ETH_ALEN];
u8 ssid[32];
size_t ssid_len;
int freq;
u16 beacon_int;
u16 caps;
int qual;
int noise;
int level;
u64 tsf;
struct os_time last_update;
struct wpabuf *anqp_venue_name;
struct wpabuf *anqp_network_auth_type;
struct wpabuf *anqp_roaming_consortium;
struct wpabuf *anqp_ip_addr_type_availability;
struct wpabuf *anqp_nai_realm;
struct wpabuf *anqp_3gpp;
struct wpabuf *anqp_domain_name;
size_t ie_len;
size_t beacon_ie_len;
/* followed by ie_len octets of IEs */
/* followed by beacon_ie_len octets of IEs */
void wpa_bss_update_start(struct wpa_supplicant *wpa_s);
void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,
struct wpa_scan_res *res);
void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
int new_scan);
int wpa_bss_init(struct wpa_supplicant *wpa_s);
void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
void wpa_bss_flush(struct wpa_supplicant *wpa_s);
void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age);
struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
const u8 *ssid, size_t ssid_len);
struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
const u8 *bssid);
struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s,
const u8 *dev_addr);
struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id);
const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
u32 vendor_type);
int wpa_bss_get_max_rate(const struct wpa_bss *bss);
int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates);
#endif /* BSS_H */