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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.
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/*
* 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.
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* 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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*
Remove the GPL notification from files contributed by Jouni Malinen Remove the GPL notification text from the files that were initially contributed by myself. Signed-hostap: Jouni Malinen <j@w1.fi>
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* This software may be distributed under the terms of the BSD license.
* See README for more details.
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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*/
#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)
Interworking: Add ANQP query requests Add mechanism for using GAS/ANQP to query Interworking related information from APs. The received information is stored in the BSS table and can be viewed with ctrl_iface BSS command. New ctrl_iface command ANQP_GET can be used to fetch ANQP elements from a specific AP. Additional commands FETCH_ANQP and STOP_FETCH_ANQP can be used to initiate and stop an iteration through all APs in the BSS table that indicate support Interworking to fetch ANQP elements from them.
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#define WPA_BSS_ANQP_FETCH_TRIED BIT(6)
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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Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
2012-12-27 11:29:05 +01:00
/**
* struct wpa_bss_anqp - ANQP data for a BSS entry (struct wpa_bss)
*/
Interworking: Move BSS ANQP information into separate struct This is an initial step in allowing the ANQP responses to be shared among multiple BSSes if the BSSes are determined to be operating under identical configuration. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
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struct wpa_bss_anqp {
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Number of BSS entries referring to this ANQP data instance */
Interworking: Move BSS ANQP information into separate struct This is an initial step in allowing the ANQP responses to be shared among multiple BSSes if the BSSes are determined to be operating under identical configuration. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
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unsigned int users;
#ifdef CONFIG_INTERWORKING
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;
#endif /* CONFIG_INTERWORKING */
#ifdef CONFIG_HS20
struct wpabuf *hs20_operator_friendly_name;
struct wpabuf *hs20_wan_metrics;
struct wpabuf *hs20_connection_capability;
struct wpabuf *hs20_operating_class;
#endif /* CONFIG_HS20 */
};
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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/**
* 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 {
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** List entry for struct wpa_supplicant::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.
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struct dl_list list;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** List entry for struct wpa_supplicant::bss_id */
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 dl_list list_id;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Unique identifier for this BSS entry */
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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unsigned int id;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Number of counts without seeing this 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.
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unsigned int scan_miss_count;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Index of the last scan update */
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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unsigned int last_update_idx;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Information flags about the BSS/IBSS (WPA_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.
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unsigned int flags;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** BSSID */
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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u8 bssid[ETH_ALEN];
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** HESSID */
Interworking: Store HESSID in BSS entry This makes it more convenient to match BSS entries that belong to the same homogenous ESS. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
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u8 hessid[ETH_ALEN];
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** SSID */
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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u8 ssid[32];
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Length of SSID */
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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size_t ssid_len;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Frequency of the channel in MHz (e.g., 2412 = channel 1) */
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 freq;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Beacon interval in TUs (host byte order) */
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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u16 beacon_int;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Capability information field in host byte order */
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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u16 caps;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Signal quality */
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 qual;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Noise level */
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 noise;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Signal level */
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 level;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
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/** Timestamp of last Beacon/Probe Response frame */
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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u64 tsf;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
2012-12-27 11:29:05 +01:00
/** Time of the last update (i.e., Beacon or Probe Response RX) */
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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struct os_time last_update;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
2012-12-27 11:29:05 +01:00
/** ANQP data */
Interworking: Move BSS ANQP information into separate struct This is an initial step in allowing the ANQP responses to be shared among multiple BSSes if the BSSes are determined to be operating under identical configuration. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-09-04 15:02:29 +02:00
struct wpa_bss_anqp *anqp;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
2012-12-27 11:29:05 +01:00
/** Length of the following IE field in octets (from Probe Response) */
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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size_t ie_len;
Add Doxygen documentation for functionality related to scanning Signed-hostap: Jouni Malinen <j@w1.fi>
2012-12-27 11:29:05 +01:00
/** Length of the following Beacon IE field in octets */
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.
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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.
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/* 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.
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/* 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,
Use more accurate timestamps for scan results 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>
2013-02-12 18:14:32 +01:00
struct wpa_scan_res *res,
struct os_time *fetch_time);
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.
2009-12-27 20:07:47 +01:00
int wpa_bss_init(struct wpa_supplicant *wpa_s);
void wpa_bss_deinit(struct wpa_supplicant *wpa_s);
dbus: Add D-Bus methods to flush the BSS cache Add an "Interface.FlushBSS" method to the new D-Bus API and a "flush" method to the old API. Both take an age parameter that is a threshold (in seconds) for selecting entries to evict. Setting this parameter to zero flushes all entries from the cache. This mechanism is useful for a connection manager to clear state at startup and on resume (where the age parameter may be used to hold onto recent/valid data).
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void wpa_bss_flush(struct wpa_supplicant *wpa_s);
void wpa_bss_flush_by_age(struct wpa_supplicant *wpa_s, int age);
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);
WPS: Use latest updated BSS entry if multiple BSSID matches found If the AP (P2P GO) has changes its channel of SSID recently, the BSS table may have multiple entries for a BSSID. Select the one which was most recently updated for WPS/P2P operations in such case to increase the likelihood of using current information. Signed-hostap: Jouni Malinen <j@w1.fi>
2013-03-31 16:15:39 +02:00
struct wpa_bss * wpa_bss_get_bssid_latest(struct wpa_supplicant *wpa_s,
const u8 *bssid);
P2P: Allow BSS entry to be fetched based on GO P2P Device Address "BSS p2p_dev_addr=<P2P Device Address>" can now be used to fetch a specific BSS entry based on the P2P Device Address of the GO to avoid having to iterate through the full BSS table when an external program needs to figure out whether a specific peer is currently operating as a GO. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-02-07 15:23:21 +01:00
struct wpa_bss * wpa_bss_get_p2p_dev_addr(struct wpa_supplicant *wpa_s,
const u8 *dev_addr);
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_id(struct wpa_supplicant *wpa_s, unsigned int id);
Fix BSS RANGE command for no exact id match cases The RANGE=N1-N2 command did not return any entries in some cases where N1 does not match with any BSS entry. Fix this by allow entries to be fetched even without knowing the exact id values. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2013-02-07 11:27:52 +01:00
struct wpa_bss * wpa_bss_get_id_range(struct wpa_supplicant *wpa_s,
unsigned int idf, unsigned int idl);
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
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);
P2P: Show P2P flag in BSS entries also based on Beacon frames It is possible that a P2P GO has been discovered through a non-P2P scan that did not return P2P IE in Probe Response frames. To cover those cases, check also Beacon frame (if received) for P2P IE. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2013-10-14 18:22:09 +02:00
const u8 * wpa_bss_get_vendor_ie_beacon(const struct wpa_bss *bss,
u32 vendor_type);
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 wpabuf * wpa_bss_get_vendor_ie_multi(const struct wpa_bss *bss,
u32 vendor_type);
BSS: Add wpa_bss_get_vendor_ie_multi_beacon() This can be used to fetch vendor IEs from Beacon frames. Signed-hostap: Jouni Malinen <j@w1.fi>
2012-09-02 18:54:42 +02:00
struct wpabuf * wpa_bss_get_vendor_ie_multi_beacon(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);
Interworking: Move BSS ANQP information into separate struct This is an initial step in allowing the ANQP responses to be shared among multiple BSSes if the BSSes are determined to be operating under identical configuration. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-09-04 15:02:29 +02:00
struct wpa_bss_anqp * wpa_bss_anqp_alloc(void);
Interworking: Unshare ANQP results on explicit ANQP requests When ANQP_GET or HS20_ANQP_GET is used to request ANQP information, unshare the ANQP information (i.e., create a per-BSS copy of it) to make sure the information from the specified BSS is available in case the APs provide different information within HESSID. Signed-hostap: Jouni Malinen <jouni@qca.qualcomm.com>
2012-10-03 13:17:41 +02:00
int wpa_bss_anqp_unshare_alloc(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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