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[1/3] cpmac: fix the receiving of 802.1q frames

Message ID 201003071155.27947.florian@openwrt.org
State Accepted, archived
Delegated to: David Miller
Headers show

Commit Message

Florian Fainelli March 7, 2010, 10:55 a.m. UTC 
Despite what the comment above CPMAC_SKB_SIZE says, the hardware also
needs to account for the FCS length in a received frame. This patch fix
the receiving of 802.1q frames which have 4 more bytes. While at it
unhardcode the definition and use the one from if_vlan.h.

Signed-off-by: Florian Fainelli <florian@openwrt.org>
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diff mbox

Patch

diff --git a/drivers/net/cpmac.c b/drivers/net/cpmac.c
index b85c81f..722a196 100644
--- a/drivers/net/cpmac.c
+++ b/drivers/net/cpmac.c
@@ -28,6 +28,7 @@ 
 #include <linux/delay.h>
 
 #include <linux/netdevice.h>
+#include <linux/if_vlan.h>
 #include <linux/etherdevice.h>
 #include <linux/ethtool.h>
 #include <linux/skbuff.h>
@@ -56,8 +57,8 @@  MODULE_PARM_DESC(debug_level, "Number of NETIF_MSG bits to enable");
 MODULE_PARM_DESC(dumb_switch, "Assume switch is not connected to MDIO bus");
 
 #define CPMAC_VERSION "0.5.1"
-/* frame size + 802.1q tag */
-#define CPMAC_SKB_SIZE		(ETH_FRAME_LEN + 4)
+/* frame size + 802.1q tag + FCS size */
+#define CPMAC_SKB_SIZE		(ETH_FRAME_LEN + ETH_FCS_LEN + VLAN_HLEN)
 #define CPMAC_QUEUES	8
 
 /* Ethernet registers */