1 /* 2 * BSS table 3 * Copyright (c) 2009-2010, 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 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 #define WPA_BSS_ANQP_FETCH_TRIED BIT(6) 27 28 /** 29 * struct wpa_bss - BSS table 30 * @list: List entry for struct wpa_supplicant::bss 31 * @list_id: List entry for struct wpa_supplicant::bss_id 32 * @id: Unique identifier for this BSS entry 33 * @scan_miss_count: Number of counts without seeing this BSS 34 * @flags: information flags about the BSS/IBSS (WPA_BSS_*) 35 * @last_update_idx: Index of the last scan update 36 * @bssid: BSSID 37 * @freq: frequency of the channel in MHz (e.g., 2412 = channel 1) 38 * @beacon_int: beacon interval in TUs (host byte order) 39 * @caps: capability information field in host byte order 40 * @qual: signal quality 41 * @noise: noise level 42 * @level: signal level 43 * @tsf: Timestamp of last Beacon/Probe Response frame 44 * @last_update: Time of the last update (i.e., Beacon or Probe Response RX) 45 * @ie_len: length of the following IE field in octets (from Probe Response) 46 * @beacon_ie_len: length of the following Beacon IE field in octets 47 * 48 * This structure is used to store information about neighboring BSSes in 49 * generic format. It is mainly updated based on scan results from the driver. 50 */ 51 struct wpa_bss { 52 struct dl_list list; 53 struct dl_list list_id; 54 unsigned int id; 55 unsigned int scan_miss_count; 56 unsigned int last_update_idx; 57 unsigned int flags; 58 u8 bssid[ETH_ALEN]; 59 u8 ssid[32]; 60 size_t ssid_len; 61 int freq; 62 u16 beacon_int; 63 u16 caps; 64 int qual; 65 int noise; 66 int level; 67 u64 tsf; 68 struct os_time last_update; 69 #ifdef CONFIG_INTERWORKING 70 struct wpabuf *anqp_venue_name; 71 struct wpabuf *anqp_network_auth_type; 72 struct wpabuf *anqp_roaming_consortium; 73 struct wpabuf *anqp_ip_addr_type_availability; 74 struct wpabuf *anqp_nai_realm; 75 struct wpabuf *anqp_3gpp; 76 struct wpabuf *anqp_domain_name; 77 #endif /* CONFIG_INTERWORKING */ 78 size_t ie_len; 79 size_t beacon_ie_len; 80 /* followed by ie_len octets of IEs */ 81 /* followed by beacon_ie_len octets of IEs */ 82 }; 83 84 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 85 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 86 struct wpa_scan_res *res); 87 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 88 int new_scan); 89 int wpa_bss_init(struct wpa_supplicant *wpa_s); 90 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 91 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 92 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 93 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 94 const u8 *ssid, size_t ssid_len); 95 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 96 const u8 *bssid); 97 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 98 const u8 *dev_addr); 99 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 100 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 101 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 102 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 103 u32 vendor_type); 104 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 105 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 106 107 #endif /* BSS_H */ 108