mirror of
https://github.com/espressif/esp-idf.git
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94 lines
2.9 KiB
C
94 lines
2.9 KiB
C
/*
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* BSS table
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* Copyright (c) 2009-2019, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef BSS_H
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#define BSS_H
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struct wpa_scan_res;
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/**
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* struct wpa_bss - BSS table
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*
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* This structure is used to store information about neighboring BSSes in
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* generic format. It is mainly updated based on scan results from the driver.
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*/
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struct wpa_bss {
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/** List entry for struct wpa_supplicant::bss */
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struct dl_list list;
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/** List entry for struct wpa_supplicant::bss_id */
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struct dl_list list_id;
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/** Unique identifier for this BSS entry */
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unsigned int id;
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/** Index of the last scan update */
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unsigned int last_update_idx;
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/** Information flags about the BSS/IBSS (WPA_BSS_*) */
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unsigned int flags;
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/** BSSID */
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u8 bssid[ETH_ALEN];
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/** SSID */
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u8 ssid[SSID_MAX_LEN];
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/** Length of SSID */
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size_t ssid_len;
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/** Frequency of the channel in MHz (e.g., 2412 = channel 1) */
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int channel;
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/** Beacon interval in TUs (host byte order) */
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u16 beacon_int;
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/** Capability information field in host byte order */
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u16 caps;
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/** Signal quality */
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int qual;
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/** Noise level */
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int noise;
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/** Signal level */
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int level;
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/** Timestamp of last Beacon/Probe Response frame */
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u64 tsf;
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/** Timestamp of parent aganist which it was taken */
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u64 parent_tsf;
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/** Time of the last update (i.e., Beacon or Probe Response RX) */
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struct os_reltime last_update;
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/** Length of the following IE field in octets (from Probe Response) */
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size_t ie_len;
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/** Length of the following Beacon IE field in octets */
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size_t beacon_ie_len;
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/* followed by ie_len octets of IEs */
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/* followed by beacon_ie_len octets of IEs */
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u8 ies[];
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};
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static inline const u8 * wpa_bss_ie_ptr(const struct wpa_bss *bss)
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{
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return bss->ies;
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}
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void wpa_bss_update_start(struct wpa_supplicant *wpa_s);
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void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,
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struct wpa_scan_res *res,
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struct os_reltime *fetch_time);
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void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
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const char *reason);
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void wpa_bss_update_end(struct wpa_supplicant *wpa_s);
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int wpa_bss_init(struct wpa_supplicant *wpa_s);
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void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
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void wpa_bss_flush(struct wpa_supplicant *wpa_s);
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struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
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const u8 *ssid, size_t ssid_len);
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struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
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const u8 *bssid);
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const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
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const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
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int wpa_bss_ext_capab(const struct wpa_bss *bss, unsigned int capab);
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struct wpa_bss * wpa_bss_get_next_bss(struct wpa_supplicant *wpa_s,
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struct wpa_bss *prev_bss);
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void calculate_update_time(const struct os_reltime *fetch_time,
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unsigned int age_ms,
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struct os_reltime *update_time);
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#endif /* BSS_H */
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