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hostap/wpa_supplicant/bss.h

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Add BSS table to track scan results without dropping information Collect information from scan results into a BSS table that will not expire information as quickly as scan results where every new scan, no matter for how limited set of channels/SSIDs, clears all old information. For now, this is only used for D-Bus BSS added/removed notifications, but this will likely be extended to be used internally instead of the scan results to better support partial scans.
2009-12-27 20:07:47 +01:00
/*
* BSS table
* Copyright (c) 2009, Jouni Malinen <j@w1.fi>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* Alternatively, this software may be distributed under the terms of BSD
* license.
*
* See README and COPYING for more details.
*/
#ifndef BSS_H
#define BSS_H
#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)
/**
* struct wpa_bss - BSS table
* @list: List entry for struct wpa_supplicant::bss
Add BSS list sorted by id and add some helper functions This allows the BSS list to be iterated in order of increasing id to avoid problems with new scans reordering entries. The order on the wpa_s->bss list changes with most recently updated entries being moved to the tail of the list while wpa_s->bss_id list maintains its order with new entries being added to the tail and old entries being removed when they expire.
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* @list_id: List entry for struct wpa_supplicant::bss_id
Add BSS table to track scan results without dropping information Collect information from scan results into a BSS table that will not expire information as quickly as scan results where every new scan, no matter for how limited set of channels/SSIDs, clears all old information. For now, this is only used for D-Bus BSS added/removed notifications, but this will likely be extended to be used internally instead of the scan results to better support partial scans.
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* @id: Unique identifier for this BSS entry
* @scan_miss_count: Number of counts without seeing this BSS
* @flags: information flags about the BSS/IBSS (WPA_BSS_*)
* @last_update_idx: Index of the last scan update
* @bssid: BSSID
* @freq: frequency of the channel in MHz (e.g., 2412 = channel 1)
* @beacon_int: beacon interval in TUs (host byte order)
* @caps: capability information field in host byte order
* @qual: signal quality
* @noise: noise level
* @level: signal level
* @tsf: Timestamp of last Beacon/Probe Response frame
* @last_update: Time of the last update (i.e., Beacon or Probe Response RX)
* @ie_len: length of the following IE field in octets
*
* 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 {
struct dl_list list;
Add BSS list sorted by id and add some helper functions This allows the BSS list to be iterated in order of increasing id to avoid problems with new scans reordering entries. The order on the wpa_s->bss list changes with most recently updated entries being moved to the tail of the list while wpa_s->bss_id list maintains its order with new entries being added to the tail and old entries being removed when they expire.
2009-12-27 23:30:38 +01:00
struct dl_list list_id;
Add BSS table to track scan results without dropping information Collect information from scan results into a BSS table that will not expire information as quickly as scan results where every new scan, no matter for how limited set of channels/SSIDs, clears all old information. For now, this is only used for D-Bus BSS added/removed notifications, but this will likely be extended to be used internally instead of the scan results to better support partial scans.
2009-12-27 20:07:47 +01:00
unsigned int id;
unsigned int scan_miss_count;
unsigned int last_update_idx;
unsigned int flags;
u8 bssid[ETH_ALEN];
u8 ssid[32];
size_t ssid_len;
int freq;
u16 beacon_int;
u16 caps;
int qual;
int noise;
int level;
u64 tsf;
struct os_time last_update;
size_t ie_len;
/* followed by ie_len octets of IEs */
};
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);
void wpa_bss_update_end(struct wpa_supplicant *wpa_s);
int wpa_bss_init(struct wpa_supplicant *wpa_s);
void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
Add BSS list sorted by id and add some helper functions This allows the BSS list to be iterated in order of increasing id to avoid problems with new scans reordering entries. The order on the wpa_s->bss list changes with most recently updated entries being moved to the tail of the list while wpa_s->bss_id list maintains its order with new entries being added to the tail and old entries being removed when they expire.
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struct wpa_bss * wpa_bss_get_bssid(struct wpa_supplicant *wpa_s,
const u8 *bssid);
struct wpa_bss * wpa_bss_get_id(struct wpa_supplicant *wpa_s, unsigned int id);
const u8 * wpa_bss_get_ie(const struct wpa_bss *bss, u8 ie);
const u8 * wpa_bss_get_vendor_ie(const struct wpa_bss *bss, u32 vendor_type);
struct wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
u32 vendor_type);
Add wpa_bss_get_max_rate() to match with old scan_res helpers
2009-12-28 00:09:32 +01:00
int wpa_bss_get_max_rate(const struct wpa_bss *bss);
Add BSS table to track scan results without dropping information Collect information from scan results into a BSS table that will not expire information as quickly as scan results where every new scan, no matter for how limited set of channels/SSIDs, clears all old information. For now, this is only used for D-Bus BSS added/removed notifications, but this will likely be extended to be used internally instead of the scan results to better support partial scans.
2009-12-27 20:07:47 +01:00
#endif /* BSS_H */
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