diff options
| author |   Alban Bedel <albeu@free.fr> | 2014-11-23 13:07:54 +0100 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-11-24 15:26:41 -0500 |
| commit | 2bbea0a885079a095c252a927a174a0bfec9e3e9 (patch) | |
| tree | 6c42d8b32f5da4e8bbcd5c6b0369e2f2f9671afe /drivers/net/ethernet/realtek/8139too.c | |
| parent | net: fec: init maximum receive buffer size for ring1 and ring2 (diff) | |
| download | linux-dev-2bbea0a885079a095c252a927a174a0bfec9e3e9.tar.xz linux-dev-2bbea0a885079a095c252a927a174a0bfec9e3e9.zip | |
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: Alban Bedel <albeu@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/realtek/8139too.c')
| -rw-r--r-- | drivers/net/ethernet/realtek/8139too.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/drivers/net/ethernet/realtek/8139too.c b/drivers/net/ethernet/realtek/8139too.c index e157541b842b..63dc0f95d050 100644 --- a/drivers/net/ethernet/realtek/8139too.c +++ b/drivers/net/ethernet/realtek/8139too.c @@ -112,6 +112,7 @@ #include <linux/io.h> #include <linux/uaccess.h> #include <linux/gfp.h> +#include <linux/if_vlan.h> #include <asm/irq.h> #define RTL8139_DRIVER_NAME DRV_NAME " Fast Ethernet driver " DRV_VERSION @@ -182,13 +183,13 @@ static int debug = -1; /* Number of Tx descriptor registers. */ #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 /* 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_TOT_LEN (TX_BUF_SIZE * NUM_TX_DESC) |