[PATCH] airo.c: add support for IW_ENCODE_TEMP (i.e. xsupplicant)

Hello Jeff,

this patch changes causes the airo driver to not reset the card when a
temporary WEP key is set, when the IW_ENCODE_TEMP flag is used.  This is
needed for xsupplicant as 802.1x, LEAP, etc. change WEP keys frequently
after authentication and resetting the card causes infinite
reauthentication.

Javier and Jean agree with the patch, Javier suggested I send this to
you, can you apply this?

Thanks.

Signed-off-by: Dan Streetman <ddstreet@ieee.org>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>

drivers/net/wireless/airo.c

@@ -4037,7 +4037,7 @@ static int PC4500_writerid(struct airo_info *ai, u16 rid,
 		Cmd cmd;
 		Resp rsp;
 
-		if (test_bit(FLAG_ENABLED, &ai->flags))
+		if (test_bit(FLAG_ENABLED, &ai->flags) && (RID_WEP_TEMP != rid))
 			printk(KERN_ERR
 				"%s: MAC should be disabled (rid=%04x)\n",
 				__FUNCTION__, rid);
@@ -5093,9 +5093,9 @@ static int set_wep_key(struct airo_info *ai, u16 index,
 		printk(KERN_INFO "Setting key %d\n", index);
 	}
 
-	disable_MAC(ai, lock);
+	if (perm) disable_MAC(ai, lock);
 	writeWepKeyRid(ai, &wkr, perm, lock);
-	enable_MAC(ai, &rsp, lock);
+	if (perm) enable_MAC(ai, &rsp, lock);
 	return 0;
 }
 
@@ -6170,6 +6170,8 @@ static int airo_set_encode(struct net_device *dev,
 {
 	struct airo_info *local = dev->priv;
 	CapabilityRid cap_rid;		/* Card capability info */
+	int perm = ( dwrq->flags & IW_ENCODE_TEMP ? 0 : 1 );
+	u16 currentAuthType = local->config.authType;
 
 	/* Is WEP supported ? */
 	readCapabilityRid(local, &cap_rid, 1);
@@ -6212,21 +6214,20 @@ static int airo_set_encode(struct net_device *dev,
 			/* Copy the key in the driver */
 			memcpy(key.key, extra, dwrq->length);
 			/* Send the key to the card */
-			set_wep_key(local, index, key.key, key.len, 1, 1);
+			set_wep_key(local, index, key.key, key.len, perm, 1);
 		}
 		/* WE specify that if a valid key is set, encryption
 		 * should be enabled (user may turn it off later)
 		 * This is also how "iwconfig ethX key on" works */
 		if((index == current_index) && (key.len > 0) &&
 		   (local->config.authType == AUTH_OPEN)) {
 			local->config.authType = AUTH_ENCRYPT;
-			set_bit (FLAG_COMMIT, &local->flags);
 		}
 	} else {
 		/* Do we want to just set the transmit key index ? */
 		int index = (dwrq->flags & IW_ENCODE_INDEX) - 1;
 		if ((index >= 0) && (index < ((cap_rid.softCap & 0x80)?4:1))) {
-			set_wep_key(local, index, NULL, 0, 1, 1);
+			set_wep_key(local, index, NULL, 0, perm, 1);
 		} else
 			/* Don't complain if only change the mode */
 			if(!dwrq->flags & IW_ENCODE_MODE) {
@@ -6241,7 +6242,7 @@ static int airo_set_encode(struct net_device *dev,
 	if(dwrq->flags & IW_ENCODE_OPEN)
 		local->config.authType = AUTH_ENCRYPT;	// Only Wep
 	/* Commit the changes to flags if needed */
-	if(dwrq->flags & IW_ENCODE_MODE)
+	if (local->config.authType != currentAuthType)
 		set_bit (FLAG_COMMIT, &local->flags);
 	return -EINPROGRESS;		/* Call commit handler */
 }