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8139too: Allow using the largest possible MTU

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This driver allows MTU up to 1518 bytes which is not enought to run
batman-adv. Simply raise the maximum packet size up to the maximum
allowed by the transmit descriptor, 1792 bytes, giving a maximum MTU
of 1774 bytes.

Signed-off-by: Alban Bedel <albeu@free.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Alban Bedel 2014-11-08 12:48:36 +01:00 committed by David S. Miller
parent ef786f106f
commit 6f6e741f6d
1 changed files with 1 additions and 1 deletions
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drivers/net/ethernet/realtek/8139too.c
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@ -183,7 +183,7 @@ static int debug = -1;
#define NUM_TX_DESC 4
/* max supported ethernet frame size -- must be at least (dev->mtu+14+4).*/
#define MAX_ETH_FRAME_SIZE 1536
#define MAX_ETH_FRAME_SIZE 1792
/* max supported payload size */
#define MAX_ETH_DATA_SIZE (MAX_ETH_FRAME_SIZE - ETH_HLEN - ETH_FCS_LEN)