Re: IEEE80211_IOC_MLME ioctl failure

[Christoph Egger <Christoph_Egger%gmx.de@localhost>]

On 21.02.11 18:44, David Young wrote:
> On Mon, Feb 21, 2011 at 05:55:28PM +0100, Christoph Egger wrote:
>>
>> Hi!
>>
>> I configured my wlan with wpa_supplicant.
>>
>> When I do
>> wpa_supplicant -dd -i ath0 -c /etc/wpa_supplicant/wpa_supplicant.conf
>>
>> I get this output:
>>
>> [...]
>> State: SCANNING -> ASSOCIATING
>> wpa_driver_bsd_associate: ssid 'wireless' wpa ie len 22 pairwise 3
>> group 3 key mgmt 0
>> wpa_driver_bsd_set_drop_unencrypted: enabled=1
>> wpa_driver_bsd_associate: set PRIVACY 1
>> ioctl[SIOC80211, op=21, val=0, arg_len=42]: Invalid argument
>> Association request to the driver failed
>> Setting authentication timeout: 5 sec 0 usec
>>
>> The code path of the ioctl is this:
>>
>> In ieee80211_ioctl_setmlme(), mlme.im_op has the value
>> IEEE80211_MLME_ASSOC.
>> Then it calls ieee80211_find_node_with_ssid() with
>> mlme.im_macaddr being zero, mlme.im_ssid_len is 8
>> and mlme.im_ssid is "wireless".
>>
>> In ieee80211_find_node_with_ssid() it runs the loop in the if-block.
>> The MATCH_SSID() check runs only once.
>>
>> ni->ni_esslen has the value 0. So the 'break' never hits.
>>
>> Then ieee80211_find_node_whith_ssid() returns NULL.
> 
> It sounds to me like the node never was or is no longer in the scan
> table.  Maybe nodes in the scan table are discarded more quickly than
> wpa_supplicant decides which network to join?

Any ideas how to fix this?

Christoph