DGNum/hostapd
6
0
Fork 0
Code Issues Pull requests 1 Projects Releases Packages Wiki Activity Actions

wpa_supplicant: Parameterize BSS table expiration age + count

Browse source 
Replace compile-time BSS cache expiration age and scan count by config
parameters that can be set via wpa_cli and the new D-Bus API. The latter
is done with interface properties BSSExpireAge and BSSExpireCount.
This commit is contained in:
Sam Leffler 2011-03-20 12:40:59 +02:00 • committed by Jouni Malinen
parent cfe53c9aa5
commit 78633c3709
11 changed files with 264 additions and 21 deletions
Download patch file Download diff file Expand all files Collapse all files

24
wpa_supplicant/bss.c
View file

@ -30,25 +30,6 @@
*/
#define WPA_BSS_EXPIRATION_PERIOD 10
/**
* WPA_BSS_EXPIRATION_AGE - BSS entry age after which it can be expired
*
* This value control the time in seconds after which a BSS entry gets removed
* if it has not been updated or is not in use.
*/
#define WPA_BSS_EXPIRATION_AGE 180
/**
* WPA_BSS_EXPIRATION_SCAN_COUNT - Expire BSS after number of scans
*
* If the BSS entry has not been seen in this many scans, it will be removed.
* Value 1 means that the entry is removed after the first scan without the
* BSSID being seen. Larger values can be used to avoid BSS entries
* disappearing if they are not visible in every scan (e.g., low signal quality
* or interference).
*/
#define WPA_BSS_EXPIRATION_SCAN_COUNT 2
#define WPA_BSS_FREQ_CHANGED_FLAG BIT(0)
#define WPA_BSS_SIGNAL_CHANGED_FLAG BIT(1)
#define WPA_BSS_PRIVACY_CHANGED_FLAG BIT(2)
@ -412,7 +393,8 @@ void wpa_bss_update_end(struct wpa_supplicant *wpa_s, struct scan_info *info,
continue; /* expire only BSSes that were scanned */
if (bss->last_update_idx < wpa_s->bss_update_idx)
bss->scan_miss_count++;
if (bss->scan_miss_count >= WPA_BSS_EXPIRATION_SCAN_COUNT) {
if (bss->scan_miss_count >=
wpa_s->conf->bss_expiration_scan_count) {
wpa_dbg(wpa_s, MSG_DEBUG, "BSS: Expire BSS %u due to "
"no match in scan", bss->id);
wpa_bss_remove(wpa_s, bss);
@ -450,7 +432,7 @@ static void wpa_bss_timeout(void *eloop_ctx, void *timeout_ctx)
{
struct wpa_supplicant *wpa_s = eloop_ctx;
wpa_bss_flush_by_age(wpa_s, WPA_BSS_EXPIRATION_AGE);
wpa_bss_flush_by_age(wpa_s, wpa_s->conf->bss_expiration_age);
eloop_register_timeout(WPA_BSS_EXPIRATION_PERIOD, 0,
wpa_bss_timeout, wpa_s, NULL);
}