From: Patrick McHardy <kaber@trash.net>
Date: Mon, 21 Jan 2008 08:22:30 +0000 (-0800)
Subject: [VLAN]: Kill useless check
X-Git-Tag: v2.6.25-rc1~1162^2~245
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=62f99efce61024f1c645c2c574882b510c77c579;p=linux-2.6

[VLAN]: Kill useless check

vlan->real_dev is always equal to the device since thats what we used
for the lookup. It doesn't even seem worth a WARN_ON or BUG_ON.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/net/8021q/vlan_dev.c b/net/8021q/vlan_dev.c
index 51ce4217c0..50d8edcbb8 100644
--- a/net/8021q/vlan_dev.c
+++ b/net/8021q/vlan_dev.c
@@ -181,24 +181,6 @@ int vlan_skb_recv(struct sk_buff *skb, struct net_device *dev,
 	/* Take off the VLAN header (4 bytes currently) */
 	skb_pull_rcsum(skb, VLAN_HLEN);
 
-	/* Ok, lets check to make sure the device (dev) we
-	 * came in on is what this VLAN is attached to.
-	 */
-
-	if (dev != VLAN_DEV_INFO(skb->dev)->real_dev) {
-		rcu_read_unlock();
-
-#ifdef VLAN_DEBUG
-		printk(VLAN_DBG "%s: dropping skb: %p because came in on wrong device, dev: %s  real_dev: %s, skb_dev: %s\n",
-			__FUNCTION__, skb, dev->name,
-			VLAN_DEV_INFO(skb->dev)->real_dev->name,
-			skb->dev->name);
-#endif
-		kfree_skb(skb);
-		stats->rx_errors++;
-		return -1;
-	}
-
 	/*
 	 * Deal with ingress priority mapping.
 	 */