Commit 2bbea0a8 authored by Alban Bedel's avatar Alban Bedel Committed by David S. Miller

8139too: The maximum MTU should allow for VLAN headers

As pointed out by Ben Hutchings drivers that allow using VLAN have to
provide enough headroom for the VLAN tags.
Signed-off-by: default avatarAlban Bedel <albeu@free.fr>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent d543a762
...@@ -112,6 +112,7 @@ ...@@ -112,6 +112,7 @@
#include <linux/io.h> #include <linux/io.h>
#include <linux/uaccess.h> #include <linux/uaccess.h>
#include <linux/gfp.h> #include <linux/gfp.h>
#include <linux/if_vlan.h>
#include <asm/irq.h> #include <asm/irq.h>
#define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION
...@@ -182,13 +183,13 @@ static int debug = -1; ...@@ -182,13 +183,13 @@ static int debug = -1;
/* Number of Tx descriptor registers. */ /* Number of Tx descriptor registers. */
#define NUM_TX_DESC 4 #define NUM_TX_DESC 4
/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/ /* max supported ethernet frame size -- must be at least (dev->mtu+18+4).*/
#define MAX_ETH_FRAME_SIZE 1792 #define MAX_ETH_FRAME_SIZE 1792
/* max supported payload size */ /* max supported payload size */
#define MAX_ETH_DATA_SIZE (MAX_ETH_FRAME_SIZE - ETH_HLEN - ETH_FCS_LEN) #define MAX_ETH_DATA_SIZE (MAX_ETH_FRAME_SIZE - VLAN_ETH_HLEN - ETH_FCS_LEN)
/* Size of the Tx bounce buffers -- must be at least (dev->mtu+14+4). */ /* Size of the Tx bounce buffers -- must be at least (dev->mtu+18+4). */
#define TX_BUF_SIZE MAX_ETH_FRAME_SIZE #define TX_BUF_SIZE MAX_ETH_FRAME_SIZE
#define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) #define TX_BUF_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC)
......
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