[Ieee80211-devel] dynamic WEP + unicast key index > 0

[Volker B. <vol...@ph...>]

The functions ieee80211_wx_{get,set}_encodeext fail if one tries to set
unicast (IW_ENCODE_EXT_GROUP_KEY not set) keys at key indices>0. But at
least some Cisco APs dish out dynamic WEP unicast keys at index !=0. 

I think the best behaviour is to not make any assumptions on key indices
when using WEP. The patch below implements this and works for me.

Volker


--- ieee80211-1.1.6-original/ieee80211_wx.c	2005-10-21 13:29:47.000000000 -0400
+++ ieee80211-1.1.6/ieee80211_wx.c	2005-10-23 16:02:28.000000000 -0400
@@ -521,8 +521,9 @@
 		crypt = &ieee->crypt[idx];
 		group_key = 1;
 	} else {
-		if (idx != 0)
-			return -EINVAL;
+		/* some Cisco APs use idx>0 for unicast in dynamic WEP */
+ 		if (idx != 0 && ext->alg != IW_ENCODE_ALG_WEP)
+	  		return -EINVAL;
 		if (ieee->iw_mode == IW_MODE_INFRA)
 			crypt = &ieee->crypt[idx];
 		else
@@ -689,7 +690,8 @@
 	} else
 		idx = ieee->tx_keyidx;
 
-	if (!ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY)
+	if (!ext->ext_flags & IW_ENCODE_EXT_GROUP_KEY && 
+	    ext->alg != IW_ENCODE_ALG_WEP)
 		if (idx != 0 || ieee->iw_mode != IW_MODE_INFRA)
 			return -EINVAL;