1 /* 2 * BSS table 3 * Copyright (c) 2009-2010, Jouni Malinen <j (at) 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 BSS_H 16 #define BSS_H 17 18 struct wpa_scan_res; 19 20 #define WPA_BSS_QUAL_INVALID BIT(0) 21 #define WPA_BSS_NOISE_INVALID BIT(1) 22 #define WPA_BSS_LEVEL_INVALID BIT(2) 23 #define WPA_BSS_LEVEL_DBM BIT(3) 24 #define WPA_BSS_AUTHENTICATED BIT(4) 25 #define WPA_BSS_ASSOCIATED BIT(5) 26 27 /** 28 * struct wpa_bss - BSS table 29 * @list: List entry for struct wpa_supplicant::bss 30 * @list_id: List entry for struct wpa_supplicant::bss_id 31 * @id: Unique identifier for this BSS entry 32 * @scan_miss_count: Number of counts without seeing this BSS 33 * @flags: information flags about the BSS/IBSS (WPA_BSS_*) 34 * @last_update_idx: Index of the last scan update 35 * @bssid: BSSID 36 * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1) 37 * @beacon_int: beacon interval in TUs (host byte order) 38 * @caps: capability information field in host byte order 39 * @qual: signal quality 40 * @noise: noise level 41 * @level: signal level 42 * @tsf: Timestamp of last Beacon/Probe Response frame 43 * @last_update: Time of the last update (i.e., Beacon or Probe Response RX) 44 * @ie_len: length of the following IE field in octets (from Probe Response) 45 * @beacon_ie_len: length of the following Beacon IE field in octets 46 * 47 * This structure is used to store information about neighboring BSSes in 48 * generic format. It is mainly updated based on scan results from the driver. 49 */ 50 struct wpa_bss { 51 struct dl_list list; 52 struct dl_list list_id; 53 unsigned int id; 54 unsigned int scan_miss_count; 55 unsigned int last_update_idx; 56 unsigned int flags; 57 u8 bssid[ETH_ALEN]; 58 u8 ssid[32]; 59 size_t ssid_len; 60 int freq; 61 u16 beacon_int; 62 u16 caps; 63 int qual; 64 int noise; 65 int level; 66 u64 tsf; 67 struct os_time last_update; 68 size_t ie_len; 69 size_t beacon_ie_len; 70 /* followed by ie_len octets of IEs */ 71 /* followed by beacon_ie_len octets of IEs */ 72 }; 73 74 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 75 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 76 struct wpa_scan_res *res); 77 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 78 int new_scan); 79 int wpa_bss_init(struct wpa_supplicant *wpa_s); 80 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 81 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 82 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 83 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 84 const u8 *ssid, size_t ssid_len); 85 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 86 const u8 *bssid); 87 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 88 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 89 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 90 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 91 u32 vendor_type); 92 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 93 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 94 95 #endif /* BSS_H */ 96
