mirror of
https://github.com/vanhoefm/fragattacks.git
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c5f10e804a
For various P2P use cases, it is useful to have more accurate timestamp for the peer information update. This commit improves scan result handling by using a single timestamp that is taken immediately after fetching the results from the driver and then using that value to calculate the time when the driver last updated the BSS entry. In addition, more debug information is added for P2P peer updates to be able to clearly see how old information is being used here. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
129 lines
4.2 KiB
C
129 lines
4.2 KiB
C
/*
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* BSS table
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* Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#ifndef BSS_H
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#define BSS_H
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struct wpa_scan_res;
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#define WPA_BSS_QUAL_INVALID BIT(0)
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#define WPA_BSS_NOISE_INVALID BIT(1)
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#define WPA_BSS_LEVEL_INVALID BIT(2)
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#define WPA_BSS_LEVEL_DBM BIT(3)
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#define WPA_BSS_AUTHENTICATED BIT(4)
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#define WPA_BSS_ASSOCIATED BIT(5)
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#define WPA_BSS_ANQP_FETCH_TRIED BIT(6)
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/**
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* struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss)
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*/
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struct wpa_bss_anqp {
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/** Number of BSS entries referring to this ANQP data instance */
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unsigned int users;
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#ifdef CONFIG_INTERWORKING
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struct wpabuf *venue_name;
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struct wpabuf *network_auth_type;
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struct wpabuf *roaming_consortium;
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struct wpabuf *ip_addr_type_availability;
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struct wpabuf *nai_realm;
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struct wpabuf *anqp_3gpp;
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struct wpabuf *domain_name;
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#endif /* CONFIG_INTERWORKING */
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#ifdef CONFIG_HS20
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struct wpabuf *hs20_operator_friendly_name;
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struct wpabuf *hs20_wan_metrics;
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struct wpabuf *hs20_connection_capability;
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struct wpabuf *hs20_operating_class;
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#endif /* CONFIG_HS20 */
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};
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/**
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* struct wpa_bss - BSS table
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*
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* This structure is used to store information about neighboring BSSes in
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* generic format. It is mainly updated based on scan results from the driver.
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*/
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struct wpa_bss {
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/** List entry for struct wpa_supplicant::bss */
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struct dl_list list;
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/** List entry for struct wpa_supplicant::bss_id */
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struct dl_list list_id;
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/** Unique identifier for this BSS entry */
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unsigned int id;
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/** Number of counts without seeing this BSS */
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unsigned int scan_miss_count;
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/** Index of the last scan update */
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unsigned int last_update_idx;
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/** Information flags about the BSS/IBSS (WPA_BSS_*) */
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unsigned int flags;
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/** BSSID */
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u8 bssid[ETH_ALEN];
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/** HESSID */
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u8 hessid[ETH_ALEN];
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/** SSID */
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u8 ssid[32];
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/** Length of SSID */
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size_t ssid_len;
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/** Frequency of the channel in MHz (e.g., 2412 = channel 1) */
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int freq;
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/** Beacon interval in TUs (host byte order) */
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u16 beacon_int;
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/** Capability information field in host byte order */
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u16 caps;
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/** Signal quality */
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int qual;
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/** Noise level */
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int noise;
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/** Signal level */
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int level;
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/** Timestamp of last Beacon/Probe Response frame */
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u64 tsf;
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/** Time of the last update (i.e., Beacon or Probe Response RX) */
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struct os_time last_update;
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/** ANQP data */
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struct wpa_bss_anqp *anqp;
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/** Length of the following IE field in octets (from Probe Response) */
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size_t ie_len;
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/** Length of the following Beacon IE field in octets */
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size_t beacon_ie_len;
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/* followed by ie_len octets of IEs */
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/* followed by beacon_ie_len octets of IEs */
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};
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void wpa_bss_update_start(struct wpa_supplicant *wpa_s);
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void wpa_bss_update_scan_res(struct wpa_supplicant *wpa_s,
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struct wpa_scan_res *res,
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struct os_time *fetch_time);
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void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
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int new_scan);
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int wpa_bss_init(struct wpa_supplicant *wpa_s);
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void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
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void wpa_bss_flush(struct wpa_supplicant *wpa_s);
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void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age);
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struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
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const u8 *ssid, size_t ssid_len);
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struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
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const u8 *bssid);
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struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s,
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const u8 *dev_addr);
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struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id);
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struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s,
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unsigned int idf, unsigned int idl);
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const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
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const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
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struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
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u32 vendor_type);
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struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(const struct wpa_bss *bss,
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u32 vendor_type);
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int wpa_bss_get_max_rate(const struct wpa_bss *bss);
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int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates);
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struct wpa_bss_anqp * wpa_bss_anqp_alloc(void);
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int wpa_bss_anqp_unshare_alloc(struct wpa_bss *bss);
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#endif /* BSS_H */
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