[PATCH] Avoid unnecessary triggering of rescans
hschaa at suse.de
Mon Feb 25 05:21:25 EST 2008
the attached patch fixes an issue I noticed when playing around with hidden
APs and the iwlwifi-driver.
Initiating a scan (with iwlist for example) while connected to an hidden AP
results (dependend on the driver) in wpa_supplicant repeatedly triggering
rescans every few seconds.
This happens because of wpa_supplicant getting the SIOCGIWSCAN from iwlwifi
when the scan is finished. wpa_supplicant handles the scan results and
triggers a new scan due to the currently connected Essid not showing up in
the list (as it is not broadcasted).
Since iwlwifi mostly needs more then three seconds for scanning wpa_supplicant
will then hit the scan timeout (which is three seconds) and will again
initiate a new scan.
The patch changes the behavior to only initiate a rescan if wpa_supplicant is
in state WPA_SCANNING.
The patch is against 0.5.8 but should work with current development branch as
I'll appreciate any comments :)
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