IEEE80211_IOC_MLME ioctl failure

[David Young]

Hi!
I configured my wlan with wpa_supplicant.
When I do
wpa_supplicant -dd -i ath0 -c /etc/wpa_supplicant/wpa_supplicant.conf
[...]
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
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?

Dave

[Christoph Egger]

Post by David Young

Hi!
I configured my wlan with wpa_supplicant.
When I do
wpa_supplicant -dd -i ath0 -c /etc/wpa_supplicant/wpa_supplicant.conf
[...]
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
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


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[David Young]

Post by Christoph Egger

Post by David Young

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?

It's not clear to me whether there is a bug or what it is.

Dave