1 /* 2 * BSS table 3 * Copyright (c) 2009-2015, 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 *capability_list; 30 struct wpabuf *venue_name; 31 struct wpabuf *network_auth_type; 32 struct wpabuf *roaming_consortium; 33 struct wpabuf *ip_addr_type_availability; 34 struct wpabuf *nai_realm; 35 struct wpabuf *anqp_3gpp; 36 struct wpabuf *domain_name; 37 #endif /* CONFIG_INTERWORKING */ 38 #ifdef CONFIG_HS20 39 struct wpabuf *hs20_capability_list; 40 struct wpabuf *hs20_operator_friendly_name; 41 struct wpabuf *hs20_wan_metrics; 42 struct wpabuf *hs20_connection_capability; 43 struct wpabuf *hs20_operating_class; 44 struct wpabuf *hs20_osu_providers_list; 45 #endif /* CONFIG_HS20 */ 46 }; 47 48 /** 49 * struct wpa_bss - BSS table 50 * 51 * This structure is used to store information about neighboring BSSes in 52 * generic format. It is mainly updated based on scan results from the driver. 53 */ 54 struct wpa_bss { 55 /** List entry for struct wpa_supplicant::bss */ 56 struct dl_list list; 57 /** List entry for struct wpa_supplicant::bss_id */ 58 struct dl_list list_id; 59 /** Unique identifier for this BSS entry */ 60 unsigned int id; 61 /** Number of counts without seeing this BSS */ 62 unsigned int scan_miss_count; 63 /** Index of the last scan update */ 64 unsigned int last_update_idx; 65 /** Information flags about the BSS/IBSS (WPA_BSS_*) */ 66 unsigned int flags; 67 /** BSSID */ 68 u8 bssid[ETH_ALEN]; 69 /** HESSID */ 70 u8 hessid[ETH_ALEN]; 71 /** SSID */ 72 u8 ssid[SSID_MAX_LEN]; 73 /** Length of SSID */ 74 size_t ssid_len; 75 /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ 76 int freq; 77 /** Beacon interval in TUs (host byte order) */ 78 u16 beacon_int; 79 /** Capability information field in host byte order */ 80 u16 caps; 81 /** Signal quality */ 82 int qual; 83 /** Noise level */ 84 int noise; 85 /** Signal level */ 86 int level; 87 /** Timestamp of last Beacon/Probe Response frame */ 88 u64 tsf; 89 /** Time of the last update (i.e., Beacon or Probe Response RX) */ 90 struct os_reltime last_update; 91 /** Estimated throughput in kbps */ 92 unsigned int est_throughput; 93 /** Signal-to-noise ratio in dB */ 94 int snr; 95 /** ANQP data */ 96 struct wpa_bss_anqp *anqp; 97 /** Length of the following IE field in octets (from Probe Response) */ 98 size_t ie_len; 99 /** Length of the following Beacon IE field in octets */ 100 size_t beacon_ie_len; 101 /* followed by ie_len octets of IEs */ 102 /* followed by beacon_ie_len octets of IEs */ 103 }; 104 105 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 106 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 107 struct wpa_scan_res *res, 108 struct os_reltime *fetch_time); 109 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 110 int new_scan); 111 int wpa_bss_init(struct wpa_supplicant *wpa_s); 112 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 113 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 114 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 115 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 116 const u8 *ssid, size_t ssid_len); 117 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 118 const u8 *bssid); 119 struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, 120 const u8 *bssid); 121 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 122 const u8 *dev_addr); 123 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 124 struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, 125 unsigned int idf, unsigned int idl); 126 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 127 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 128 const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, 129 u32 vendor_type); 130 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 131 u32 vendor_type); 132 struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, 133 u32 vendor_type); 134 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 135 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 136 struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); 137 int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); 138 139 static inline int bss_is_dmg(const struct wpa_bss *bss) 140 { 141 return bss->freq > 45000; 142 } 143 144 static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level) 145 { 146 if (bss != NULL && new_level < 0) 147 bss->level = new_level; 148 } 149 150 #endif /* BSS_H */ 151
