From: Tristram Ha <Tristram.Ha@xxxxxxxxxxxxx> [ Upstream commit 899ecaedd15599c22553d158f53b127cc1632dc2 ] Socket buffer is not re-created when headroom is 2 and tailroom is 1. Signed-off-by: Tristram Ha <Tristram.Ha@xxxxxxxxxxxxx> Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- drivers/net/ethernet/cadence/macb_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ethernet/cadence/macb_main.c index 74eeb3a985bf1..f175b20ac510a 100644 --- a/drivers/net/ethernet/cadence/macb_main.c +++ b/drivers/net/ethernet/cadence/macb_main.c @@ -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; -- 2.20.1