Hi,
I am pretty sure that the mac80211 code doesn't handle WEP with shared keys
correctly. Using the ath9k driver on my MacBook I am unable to put the driver
into restricted mode (shared key). It stays in open mode. That is the following
command has no effect: iwconfig wlan0 enc restricted. I can also confirm this
when looking at the authentication packets that go over the air: they are sent
with the open flag, and not the shared key flag.
Surprisingly nowhere in the mac80211 code the ifsta->auth_alg is set to
WLAN_AUTH_SHARED_KEY so far. The attached small patch does just that. I am not
100% sure if that's the way to do it, so please review carefully.
With this patch authentication works. The AP now denies association, but that is
another problem.
Cheers
Ortwin
--- wext.c.orig 2008-07-21 22:18:29.000000000 +0200
+++ wext.c 2008-09-14 16:46:09.000000000 +0200
@@ -929,6 +929,14 @@
else
idx--;
+ if (sdata->vif.type == IEEE80211_IF_TYPE_STA) {
+ struct ieee80211_if_sta *ifsta = &sdata->u.sta;
+ if (erq->flags & IW_ENCODE_OPEN)
+ ifsta->auth_alg = WLAN_AUTH_OPEN;
+ else if (erq->flags & IW_ENCODE_RESTRICTED)
+ ifsta->auth_alg = WLAN_AUTH_SHARED_KEY;
+ }
+
if (erq->flags & IW_ENCODE_DISABLED)
remove = 1;
else if (erq->length == 0) {
