Johannes Berg <johannes@xxxxxxxxxxxxxxxx> writes:
> On Sat, 2008-11-08 at 12:03 +0200, Kalle Valo wrote:
>> Hello,
>>
>> I'm trying to set power save timeout for mac80211 with iwconfig, but
>> I'm having problems with iwconfig on Nokia N810:
>>
>> Nokia-N810-35-3:~# iwconfig wlan0 power timeout 500m
>> Error for wireless request "Set Power Management" (8B2C) :
>> invalid argument "500m".
>> Nokia-N810-35-3:~# iwconfig wlan0 power timeout 3
>> Error for wireless request "Set Power Management" (8B2C) :
>> invalid argument "3".
>> Nokia-N810-35-3:~#
>>
>> Looking at iwconfig sources the error means that either my syntax is
>> wrong or iwconfig has a bug in the parser. I'm guessing the latter
>> based on reading iwconfig(5). But before I will start investigating
>> iwconfig's magic, has anyone else seen this?
>
> Looks like mac80211 is rejecting that setting with -EINVAL, and that may
> well be true.
I don't think so. If mac80211 responds with -EINVAL the error would be
something like this:
$ iwconfig wlan0 power 5m
Error for wireless request "Set Power Management" (8B2C) :
SET failed on device wlan0 ; Operation not permitted.
So the error seems to happen happen during argument parsing. Oh yeah,
and I even had a printk in mac80211 and it wasn't printed. I'm going
to investigate this with gdb and try to understand how iwconfig really
parses the arguments.
--
Kalle Valo
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