1 /* 2 * BSS table 3 * Copyright (c) 2009-2010, 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 BSS_H 10 #define BSS_H 11 12 struct wpa_scan_res; 13 14 #define WPA_BSS_QUAL_INVALID BIT(0) 15 #define WPA_BSS_NOISE_INVALID BIT(1) 16 #define WPA_BSS_LEVEL_INVALID BIT(2) 17 #define WPA_BSS_LEVEL_DBM BIT(3) 18 #define WPA_BSS_AUTHENTICATED BIT(4) 19 #define WPA_BSS_ASSOCIATED BIT(5) 20 #define WPA_BSS_ANQP_FETCH_TRIED BIT(6) 21 22 /** 23 * struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss) 24 */ 25 struct wpa_bss_anqp { 26 /** Number of BSS entries referring to this ANQP data instance */ 27 unsigned int users; 28 #ifdef CONFIG_INTERWORKING 29 struct wpabuf *venue_name; 30 struct wpabuf *network_auth_type; 31 struct wpabuf *roaming_consortium; 32 struct wpabuf *ip_addr_type_availability; 33 struct wpabuf *nai_realm; 34 struct wpabuf *anqp_3gpp; 35 struct wpabuf *domain_name; 36 #endif /* CONFIG_INTERWORKING */ 37 #ifdef CONFIG_HS20 38 struct wpabuf *hs20_operator_friendly_name; 39 struct wpabuf *hs20_wan_metrics; 40 struct wpabuf *hs20_connection_capability; 41 struct wpabuf *hs20_operating_class; 42 #endif /* CONFIG_HS20 */ 43 }; 44 45 /** 46 * struct wpa_bss - BSS table 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 /** List entry for struct wpa_supplicant::bss */ 53 struct dl_list list; 54 /** List entry for struct wpa_supplicant::bss_id */ 55 struct dl_list list_id; 56 /** Unique identifier for this BSS entry */ 57 unsigned int id; 58 /** Number of counts without seeing this BSS */ 59 unsigned int scan_miss_count; 60 /** Index of the last scan update */ 61 unsigned int last_update_idx; 62 /** Information flags about the BSS/IBSS (WPA_BSS_*) */ 63 unsigned int flags; 64 /** BSSID */ 65 u8 bssid[ETH_ALEN]; 66 /** HESSID */ 67 u8 hessid[ETH_ALEN]; 68 /** SSID */ 69 u8 ssid[32]; 70 /** Length of SSID */ 71 size_t ssid_len; 72 /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ 73 int freq; 74 /** Beacon interval in TUs (host byte order) */ 75 u16 beacon_int; 76 /** Capability information field in host byte order */ 77 u16 caps; 78 /** Signal quality */ 79 int qual; 80 /** Noise level */ 81 int noise; 82 /** Signal level */ 83 int level; 84 /** Timestamp of last Beacon/Probe Response frame */ 85 u64 tsf; 86 /** Time of the last update (i.e., Beacon or Probe Response RX) */ 87 struct os_time last_update; 88 /** ANQP data */ 89 struct wpa_bss_anqp *anqp; 90 /** Length of the following IE field in octets (from Probe Response) */ 91 size_t ie_len; 92 /** Length of the following Beacon IE field in octets */ 93 size_t beacon_ie_len; 94 /* followed by ie_len octets of IEs */ 95 /* followed by beacon_ie_len octets of IEs */ 96 }; 97 98 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 99 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 100 struct wpa_scan_res *res, 101 struct os_time *fetch_time); 102 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 103 int new_scan); 104 int wpa_bss_init(struct wpa_supplicant *wpa_s); 105 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 106 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 107 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 108 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 109 const u8 *ssid, size_t ssid_len); 110 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 111 const u8 *bssid); 112 struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, 113 const u8 *bssid); 114 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 115 const u8 *dev_addr); 116 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 117 struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, 118 unsigned int idf, unsigned int idl); 119 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 120 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 121 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 122 u32 vendor_type); 123 struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, 124 u32 vendor_type); 125 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 126 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 127 struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); 128 int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); 129 130 #endif /* BSS_H */ 131
