1 /* 2 * BSS table 3 * Copyright (c) 2009-2019, 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 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 wpabuf *fils_realm_info; 44 struct dl_list anqp_elems; /* list of struct wpa_bss_anqp_elem */ 45 #endif /* CONFIG_INTERWORKING */ 46 #ifdef CONFIG_HS20 47 struct wpabuf *hs20_capability_list; 48 struct wpabuf *hs20_operator_friendly_name; 49 struct wpabuf *hs20_wan_metrics; 50 struct wpabuf *hs20_connection_capability; 51 struct wpabuf *hs20_operating_class; 52 struct wpabuf *hs20_osu_providers_list; 53 struct wpabuf *hs20_operator_icon_metadata; 54 struct wpabuf *hs20_osu_providers_nai_list; 55 #endif /* CONFIG_HS20 */ 56 }; 57 58 /** 59 * struct wpa_bss - BSS table 60 * 61 * This structure is used to store information about neighboring BSSes in 62 * generic format. It is mainly updated based on scan results from the driver. 63 */ 64 struct wpa_bss { 65 /** List entry for struct wpa_supplicant::bss */ 66 struct dl_list list; 67 /** List entry for struct wpa_supplicant::bss_id */ 68 struct dl_list list_id; 69 /** Unique identifier for this BSS entry */ 70 unsigned int id; 71 /** Number of counts without seeing this BSS */ 72 unsigned int scan_miss_count; 73 /** Index of the last scan update */ 74 unsigned int last_update_idx; 75 /** Information flags about the BSS/IBSS (WPA_BSS_*) */ 76 unsigned int flags; 77 /** BSSID */ 78 u8 bssid[ETH_ALEN]; 79 /** HESSID */ 80 u8 hessid[ETH_ALEN]; 81 /** SSID */ 82 u8 ssid[SSID_MAX_LEN]; 83 /** Length of SSID */ 84 size_t ssid_len; 85 /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ 86 int freq; 87 /** Beacon interval in TUs (host byte order) */ 88 u16 beacon_int; 89 /** Capability information field in host byte order */ 90 u16 caps; 91 /** Signal quality */ 92 int qual; 93 /** Noise level */ 94 int noise; 95 /** Signal level */ 96 int level; 97 /** Timestamp of last Beacon/Probe Response frame */ 98 u64 tsf; 99 /** Time of the last update (i.e., Beacon or Probe Response RX) */ 100 struct os_reltime last_update; 101 /** Estimated throughput in kbps */ 102 unsigned int est_throughput; 103 /** Signal-to-noise ratio in dB */ 104 int snr; 105 /** ANQP data */ 106 struct wpa_bss_anqp *anqp; 107 /** Length of the following IE field in octets (from Probe Response) */ 108 size_t ie_len; 109 /** Length of the following Beacon IE field in octets */ 110 size_t beacon_ie_len; 111 /* followed by ie_len octets of IEs */ 112 /* followed by beacon_ie_len octets of IEs */ 113 }; 114 115 void wpa_bss_update_start(struct wpa_supplicant *wpa_s); 116 void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, 117 struct wpa_scan_res *res, 118 struct os_reltime *fetch_time); 119 void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, 120 const char *reason); 121 void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, 122 int new_scan); 123 int wpa_bss_init(struct wpa_supplicant *wpa_s); 124 void wpa_bss_deinit(struct wpa_supplicant *wpa_s); 125 void wpa_bss_flush(struct wpa_supplicant *wpa_s); 126 void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); 127 struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, 128 const u8 *ssid, size_t ssid_len); 129 struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, 130 const u8 *bssid); 131 struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, 132 const u8 *bssid); 133 struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, 134 const u8 *dev_addr); 135 struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); 136 struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, 137 unsigned int idf, unsigned int idl); 138 const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); 139 const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); 140 const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, 141 u32 vendor_type); 142 struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, 143 u32 vendor_type); 144 struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, 145 u32 vendor_type); 146 int wpa_bss_get_max_rate(const struct wpa_bss *bss); 147 int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); 148 struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); 149 int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); 150 const u8 * wpa_bss_get_fils_cache_id(struct wpa_bss *bss); 151 int wpa_bss_ext_capab(const struct wpa_bss *bss, unsigned int capab); 152 153 static inline int bss_is_dmg(const struct wpa_bss *bss) 154 { 155 return bss->freq > 45000; 156 } 157 158 /** 159 * Test whether a BSS is a PBSS. 160 * This checks whether a BSS is a DMG-band PBSS. PBSS is used for P2P DMG 161 * network. 162 */ 163 static inline int bss_is_pbss(struct wpa_bss *bss) 164 { 165 return bss_is_dmg(bss) && 166 (bss->caps & IEEE80211_CAP_DMG_MASK) == IEEE80211_CAP_DMG_PBSS; 167 } 168 169 static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level) 170 { 171 if (bss != NULL && new_level < 0) 172 bss->level = new_level; 173 } 174 175 void calculate_update_time(const struct os_reltime *fetch_time, 176 unsigned int age_ms, 177 struct os_reltime *update_time); 178 179 #endif /* BSS_H */ 180
