1 /* 2 * BSS table 3 * Copyright (c) 2009-2015, Jouni Malinen <j@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 struct wpa_bss_anqp_elem { 23 struct dl_list list; 24 u16 infoid; 25 struct wpabuf *payload; 26 }; 27 28 /** 29 * struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss) 30 */ 31 struct wpa_bss_anqp { 32 /** Number of BSS entries referring to this ANQP data instance */ 33 unsigned int users; 34 #ifdef CONFIG_INTERWORKING 35 struct wpabuf *capability_list; 36 struct wpabuf *venue_name; 37 struct wpabuf *network_auth_type; 38 struct wpabuf *roaming_consortium; 39 struct wpabuf *ip_addr_type_availability; 40 struct wpabuf *nai_realm; 41 struct wpabuf *anqp_3gpp; 42 struct wpabuf *domain_name; 43 struct dl_list anqp_elems; /* list of struct wpa_bss_anqp_elem */ 44 #endif /* CONFIG_INTERWORKING */ 45 #ifdef CONFIG_HS20 46 struct wpabuf *hs20_capability_list; 47 struct wpabuf *hs20_operator_friendly_name; 48 struct wpabuf *hs20_wan_metrics; 49 struct wpabuf *hs20_connection_capability; 50 struct wpabuf *hs20_operating_class; 51 struct wpabuf *hs20_osu_providers_list; 52 #endif /* CONFIG_HS20 */ 53 }; 54 55 /** 56 * struct wpa_bss - BSS table 57 * 58 * This structure is used to store information about neighboring BSSes in 59 * generic format. It is mainly updated based on scan results from the driver. 60 */ 61 struct wpa_bss { 62 /** List entry for struct wpa_supplicant::bss */ 63 struct dl_list list; 64 /** List entry for struct wpa_supplicant::bss_id */ 65 struct dl_list list_id; 66 /** Unique identifier for this BSS entry */ 67 unsigned int id; 68 /** Number of counts without seeing this BSS */ 69 unsigned int scan_miss_count; 70 /** Index of the last scan update */ 71 unsigned int last_update_idx; 72 /** Information flags about the BSS/IBSS (WPA_BSS_*) */ 73 unsigned int flags; 74 /** BSSID */ 75 u8 bssid[ETH_ALEN]; 76 /** HESSID */ 77 u8 hessid[ETH_ALEN]; 78 /** SSID */ 79 u8 ssid[SSID_MAX_LEN]; 80 /** Length of SSID */ 81 size_t ssid_len; 82 /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ 83 int freq; 84 /** Beacon interval in TUs (host byte order) */ 85 u16 beacon_int; 86 /** Capability information field in host byte order */ 87 u16 caps; 88 /** Signal quality */ 89 int qual; 90 /** Noise level */ 91 int noise; 92 /** Signal level */ 93 int level; 94 /** Timestamp of last Beacon/Probe Response frame */ 95 u64 tsf; 96 /** Time of the last update (i.e., Beacon or Probe Response RX) */ 97 struct os_reltime last_update; 98 /** Estimated throughput in kbps */ 99 unsigned int est_throughput; 100 /** Signal-to-noise ratio in dB */ 101 int snr; 102 /** ANQP data */ 103 struct wpa_bss_anqp *anqp; 104 /** Length of the following IE field in octets (from Probe Response) */ 105 size_t ie_len; 106 /** Length of the following Beacon IE field in octets */ 107 size_t beacon_ie_len; 108 /* followed by ie_len octets of IEs */ 109 /* followed by beacon_ie_len octets of IEs */ 110 }; 111 112 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 113 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 114 struct wpa_scan_res *res, 115 struct os_reltime *fetch_time); 116 void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 117 const char *reason); 118 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 119 int new_scan); 120 int wpa_bss_init(struct wpa_supplicant *wpa_s); 121 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 122 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 123 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 124 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 125 const u8 *ssid, size_t ssid_len); 126 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 127 const u8 *bssid); 128 struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, 129 const u8 *bssid); 130 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 131 const u8 *dev_addr); 132 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 133 struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, 134 unsigned int idf, unsigned int idl); 135 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 136 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 137 const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, 138 u32 vendor_type); 139 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 140 u32 vendor_type); 141 struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, 142 u32 vendor_type); 143 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 144 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 145 struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); 146 int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); 147 148 static inline int bss_is_dmg(const struct wpa_bss *bss) 149 { 150 return bss->freq > 45000; 151 } 152 153 /** 154 * Test whether a BSS is a PBSS. 155 * This checks whether a BSS is a DMG-band PBSS. PBSS is used for P2P DMG 156 * network. 157 */ 158 static inline int bss_is_pbss(struct wpa_bss *bss) 159 { 160 return bss_is_dmg(bss) && 161 (bss->caps & IEEE80211_CAP_DMG_MASK) == IEEE80211_CAP_DMG_PBSS; 162 } 163 164 static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level) 165 { 166 if (bss != NULL && new_level < 0) 167 bss->level = new_level; 168 } 169 170 #endif /* BSS_H */ 171