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net: ethernet: cadence: fix socket buffer corruption problem

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[ Upstream commit 899ecaedd15599c22553d158f53b127cc1632dc2 ]

Socket buffer is not re-created when headroom is 2 and tailroom is 1.

Signed-off-by: Tristram Ha <Tristram.Ha@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Tristram Ha 2018-10-24 14:51:23 -07:00 • committed by Greg Kroah-Hartman
commit 7b557dbdc5
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/cadence/macb_main.c
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@ -1721,7 +1721,7 @@ static int macb_pad_and_fcs(struct sk_buff **skb, struct net_device *ndev)
padlen = 0;
/* No room for FCS, need to reallocate skb. */
else
padlen = ETH_FCS_LEN - tailroom;
padlen = ETH_FCS_LEN;
} else {
/* Add room for FCS. */
padlen += ETH_FCS_LEN;