fix the receiving of packets with a 1500 mtu and vlan enabled (#6698)

SVN-Revision: 19753

target/linux/brcm63xx/patches-2.6.30/070_bcm63xx_enet_vlan_incoming_fixed.patch

@@ -0,0 +1,13 @@
+Index: linux-2.6.30.10/drivers/net/bcm63xx_enet.c
+===================================================================
+--- linux-2.6.30.10.orig/drivers/net/bcm63xx_enet.c	2010-02-18 12:57:05.332799586 -0500
++++ linux-2.6.30.10/drivers/net/bcm63xx_enet.c	2010-02-18 12:57:53.954051082 -0500
+@@ -1520,7 +1520,7 @@
+ 	actual_mtu = mtu;
+ 
+ 	/* add ethernet header + vlan tag size */
+-	actual_mtu += VLAN_ETH_HLEN;
++	actual_mtu += VLAN_ETH_HLEN + VLAN_HLEN;
+ 
+ 	if (actual_mtu < 64 || actual_mtu > BCMENET_MAX_MTU)
+ 		return -EINVAL;