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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
Only expire scanned BSSes based on new scan results Get more information about scans when updating BSS table information. This allows the missing-from-scans expiration rule to work properly when only partial set of channels or SSIDs are being scanned.
2010-01-02 12:57:44 +01:00
* Copyright (c) 2009-2010, Jouni Malinen <j@w1.fi>
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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*
* 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
Do not store raw scan results Use scan results to update the BSS table and to select the BSS for connection, but do not store the results for longer time.
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struct wpa_scan_res;
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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#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
dbus: Change BSS property MaxRate to Rates Instead of exposing maximum BSS bit rate, expose sorted array of all supported rates.
2010-01-04 15:52:30 +01:00
* @last_update: Time of the last update (i.e., Beacon or Probe Response RX)
Fetch IEs from both Beacon and Probe Response frames if available This allows the driver wrappers to return two sets of IEs, so that the BSS code can use information from both Beacon and Probe Response frames if needed. For example, some Cisco APs seem to include more information in Wireless Provisioning Services IE when it is in the Beacon frame.
2010-01-16 15:11:05 +01:00
* @ie_len: length of the following IE field in octets (from Probe Response)
* @beacon_ie_len: length of the following Beacon IE field in octets
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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*
* 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;
Fetch IEs from both Beacon and Probe Response frames if available This allows the driver wrappers to return two sets of IEs, so that the BSS code can use information from both Beacon and Probe Response frames if needed. For example, some Cisco APs seem to include more information in Wireless Provisioning Services IE when it is in the Beacon frame.
2010-01-16 15:11:05 +01:00
size_t beacon_ie_len;
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
/* followed by ie_len octets of IEs */
Fetch IEs from both Beacon and Probe Response frames if available This allows the driver wrappers to return two sets of IEs, so that the BSS code can use information from both Beacon and Probe Response frames if needed. For example, some Cisco APs seem to include more information in Wireless Provisioning Services IE when it is in the Beacon frame.
2010-01-16 15:11:05 +01:00
/* followed by beacon_ie_len octets of IEs */
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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};
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);
Only expire scanned BSSes based on new scan results Get more information about scans when updating BSS table information. This allows the missing-from-scans expiration rule to work properly when only partial set of channels or SSIDs are being scanned.
2010-01-02 12:57:44 +01:00
void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
int new_scan);
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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int wpa_bss_init(struct wpa_supplicant *wpa_s);
void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
WPS: Use BSS table instead of raw scan results
2010-01-02 12:36:12 +01:00
struct wpa_bss * wpa_bss_get(struct wpa_supplicant *wpa_s, const u8 *bssid,
const u8 *ssid, size_t ssid_len);
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 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);
dbus: Change BSS property MaxRate to Rates Instead of exposing maximum BSS bit rate, expose sorted array of all supported rates.
2010-01-04 15:52:30 +01:00
int wpa_bss_get_bit_rates(const struct wpa_bss *bss, u8 **rates);
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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