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 struct wpabuf *hs20_osu_providers_list; 43 #endif /* CONFIG_HS20 */ 44 }; 45 46 /** 47 * struct wpa_bss - BSS table 48 * 49 * This structure is used to store information about neighboring BSSes in 50 * generic format. It is mainly updated based on scan results from the driver. 51 */ 52 struct wpa_bss { 53 /** List entry for struct wpa_supplicant::bss */ 54 struct dl_list list; 55 /** List entry for struct wpa_supplicant::bss_id */ 56 struct dl_list list_id; 57 /** Unique identifier for this BSS entry */ 58 unsigned int id; 59 /** Number of counts without seeing this BSS */ 60 unsigned int scan_miss_count; 61 /** Index of the last scan update */ 62 unsigned int last_update_idx; 63 /** Information flags about the BSS/IBSS (WPA_BSS_*) */ 64 unsigned int flags; 65 /** BSSID */ 66 u8 bssid[ETH_ALEN]; 67 /** HESSID */ 68 u8 hessid[ETH_ALEN]; 69 /** SSID */ 70 u8 ssid[32]; 71 /** Length of SSID */ 72 size_t ssid_len; 73 /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ 74 int freq; 75 /** Beacon interval in TUs (host byte order) */ 76 u16 beacon_int; 77 /** Capability information field in host byte order */ 78 u16 caps; 79 /** Signal quality */ 80 int qual; 81 /** Noise level */ 82 int noise; 83 /** Signal level */ 84 int level; 85 /** Timestamp of last Beacon/Probe Response frame */ 86 u64 tsf; 87 /** Time of the last update (i.e., Beacon or Probe Response RX) */ 88 struct os_reltime last_update; 89 /** ANQP data */ 90 struct wpa_bss_anqp *anqp; 91 /** Length of the following IE field in octets (from Probe Response) */ 92 size_t ie_len; 93 /** Length of the following Beacon IE field in octets */ 94 size_t beacon_ie_len; 95 /* followed by ie_len octets of IEs */ 96 /* followed by beacon_ie_len octets of IEs */ 97 }; 98 99 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 100 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 101 struct wpa_scan_res *res, 102 struct os_reltime *fetch_time); 103 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 104 int new_scan); 105 int wpa_bss_init(struct wpa_supplicant *wpa_s); 106 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 107 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 108 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 109 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 110 const u8 *ssid, size_t ssid_len); 111 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 112 const u8 *bssid); 113 struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, 114 const u8 *bssid); 115 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 116 const u8 *dev_addr); 117 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 118 struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, 119 unsigned int idf, unsigned int idl); 120 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 121 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 122 const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, 123 u32 vendor_type); 124 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 125 u32 vendor_type); 126 struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, 127 u32 vendor_type); 128 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 129 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 130 struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); 131 int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); 132 133 static inline int bss_is_dmg(const struct wpa_bss *bss) 134 { 135 return bss->freq > 45000; 136 } 137 138 #endif /* BSS_H */ 139
