[BRIDGE]: allow full size vlan packets

Need to allow for VLAN header when bridging.

Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/bridge/br_forward.c b/net/bridge/br_forward.c
index 2d24fb400e0cbbd79ef064758b69bbebf07e0ccb..56f3aa47e758f40dab34a007d8eeb50940046190 100644 (file)
--- a/net/bridge/br_forward.c
+++ b/net/bridge/br_forward.c
@@ -16,6 +16,7 @@
 #include <linux/kernel.h>
 #include <linux/netdevice.h>
 #include <linux/skbuff.h>
+#include <linux/if_vlan.h>
 #include <linux/netfilter_bridge.h>
 #include "br_private.h"
 
@@ -29,10 +30,15 @@ static inline int should_deliver(const struct net_bridge_port *p,
        return 1;
 }
 
+static inline unsigned packet_length(const struct sk_buff *skb)
+{
+       return skb->len - (skb->protocol == htons(ETH_P_8021Q) ? VLAN_HLEN : 0);
+}
+
 int br_dev_queue_push_xmit(struct sk_buff *skb)
 {
        /* drop mtu oversized packets except tso */
-       if (skb->len > skb->dev->mtu && !skb_shinfo(skb)->tso_size)
+       if (packet_length(skb) > skb->dev->mtu && !skb_shinfo(skb)->tso_size)
                kfree_skb(skb);
        else {
 #ifdef CONFIG_BRIDGE_NETFILTER