/* * BSS table * Copyright (c) 2009-2019, Jouni Malinen * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #ifndef BSS_H #define BSS_H struct wpa_scan_res; #define WPA_BSS_QUAL_INVALID BIT(0) #define WPA_BSS_NOISE_INVALID BIT(1) #define WPA_BSS_LEVEL_INVALID BIT(2) #define WPA_BSS_LEVEL_DBM BIT(3) #define WPA_BSS_AUTHENTICATED BIT(4) #define WPA_BSS_ASSOCIATED BIT(5) #define WPA_BSS_ANQP_FETCH_TRIED BIT(6) #define WPA_BSS_OWE_TRANSITION BIT(7) #define WPA_BSS_FREQ_CHANGED_FLAG BIT(0) #define WPA_BSS_SIGNAL_CHANGED_FLAG BIT(1) #define WPA_BSS_PRIVACY_CHANGED_FLAG BIT(2) #define WPA_BSS_MODE_CHANGED_FLAG BIT(3) #define WPA_BSS_WPAIE_CHANGED_FLAG BIT(4) #define WPA_BSS_RSNIE_CHANGED_FLAG BIT(5) #define WPA_BSS_WPS_CHANGED_FLAG BIT(6) #define WPA_BSS_RATES_CHANGED_FLAG BIT(7) #define WPA_BSS_IES_CHANGED_FLAG BIT(8) struct wpa_bss_anqp_elem { struct dl_list list; u16 infoid; bool protected_response; /* received in a protected GAS response */ struct wpabuf *payload; }; /** * struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss) */ struct wpa_bss_anqp { /** Number of BSS entries referring to this ANQP data instance */ unsigned int users; #ifdef CONFIG_INTERWORKING struct wpabuf *capability_list; struct wpabuf *venue_name; struct wpabuf *network_auth_type; struct wpabuf *roaming_consortium; struct wpabuf *ip_addr_type_availability; struct wpabuf *nai_realm; struct wpabuf *anqp_3gpp; struct wpabuf *domain_name; struct wpabuf *fils_realm_info; struct dl_list anqp_elems; /* list of struct wpa_bss_anqp_elem */ #endif /* CONFIG_INTERWORKING */ #ifdef CONFIG_HS20 struct wpabuf *hs20_capability_list; struct wpabuf *hs20_operator_friendly_name; struct wpabuf *hs20_wan_metrics; struct wpabuf *hs20_connection_capability; struct wpabuf *hs20_operating_class; struct wpabuf *hs20_osu_providers_list; struct wpabuf *hs20_operator_icon_metadata; struct wpabuf *hs20_osu_providers_nai_list; #endif /* CONFIG_HS20 */ }; /** * struct wpa_bss - BSS table * * This structure is used to store information about neighboring BSSes in * generic format. It is mainly updated based on scan results from the driver. */ struct wpa_bss { /** List entry for struct wpa_supplicant::bss */ struct dl_list list; /** List entry for struct wpa_supplicant::bss_id */ struct dl_list list_id; /** Unique identifier for this BSS entry */ unsigned int id; /** Number of counts without seeing this BSS */ unsigned int scan_miss_count; /** Index of the last scan update */ unsigned int last_update_idx; /** Information flags about the BSS/IBSS (WPA_BSS_*) */ unsigned int flags; /** BSSID */ u8 bssid[ETH_ALEN]; /** HESSID */ u8 hessid[ETH_ALEN]; /** SSID */ u8 ssid[SSID_MAX_LEN]; /** Length of SSID */ size_t ssid_len; /** Frequency of the channel in MHz (e.g., 2412 = channel 1) */ int freq; /** Beacon interval in TUs (host byte order) */ u16 beacon_int; /** Capability information field in host byte order */ u16 caps; /** Signal quality */ int qual; /** Noise level */ int noise; /** Signal level */ int level; /** Timestamp of last Beacon/Probe Response frame */ u64 tsf; /** Whether the Beacon frame data is known to be newer */ bool beacon_newer; /** Time of the last update (i.e., Beacon or Probe Response RX) */ struct os_reltime last_update; /** Estimated throughput in kbps */ unsigned int est_throughput; /** Signal-to-noise ratio in dB */ int snr; /** ANQP data */ struct wpa_bss_anqp *anqp; /** Length of the following IE field in octets (from Probe Response) */ size_t ie_len; /** Length of the following Beacon IE field in octets */ size_t beacon_ie_len; /* followed by ie_len octets of IEs */ /* followed by beacon_ie_len octets of IEs */ u8 ies[]; }; static inline const u8 * wpa_bss_ie_ptr(const struct wpa_bss *bss) { return bss->ies; } void notify_bss_changes(struct wpa_supplicant *wpa_s, u32 changes, const struct wpa_bss *bss); void wpa_bss_update_start(struct wpa_supplicant *wpa_s); void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s, struct wpa_scan_res *res, struct os_reltime *fetch_time); void wpa_bss_remove(struct wpa_supplicant *wpa_s, struct wpa_bss *bss, const char *reason); void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info, int new_scan); int wpa_bss_init(struct wpa_supplicant *wpa_s); void wpa_bss_deinit(struct wpa_supplicant *wpa_s); void wpa_bss_flush(struct wpa_supplicant *wpa_s); void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age); struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid, const u8 *ssid, size_t ssid_len); struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s, const u8 *bssid); struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s, const u8 *bssid); struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s, const u8 *dev_addr); struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id); struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s, unsigned int idf, unsigned int idl); const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie); const u8 * wpa_bss_get_ie_ext(const struct wpa_bss *bss, u8 ext); const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type); const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss, u32 vendor_type); struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss, u32 vendor_type); struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss, u32 vendor_type); int wpa_bss_get_max_rate(const struct wpa_bss *bss); int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates); struct wpa_bss_anqp * wpa_bss_anqp_alloc(void); int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss); const u8 * wpa_bss_get_fils_cache_id(const struct wpa_bss *bss); int wpa_bss_ext_capab(const struct wpa_bss *bss, unsigned int capab); static inline int bss_is_dmg(const struct wpa_bss *bss) { return bss->freq > 45000; } /** * Test whether a BSS is a PBSS. * This checks whether a BSS is a DMG-band PBSS. PBSS is used for P2P DMG * network. */ static inline int bss_is_pbss(struct wpa_bss *bss) { return bss_is_dmg(bss) && (bss->caps & IEEE80211_CAP_DMG_MASK) == IEEE80211_CAP_DMG_PBSS; } static inline void wpa_bss_update_level(struct wpa_bss *bss, int new_level) { if (bss != NULL && new_level > -WPA_INVALID_NOISE && new_level < 0) bss->level = new_level; } void calculate_update_time(const struct os_reltime *fetch_time, unsigned int age_ms, struct os_reltime *update_time); #endif /* BSS_H */