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chelsio: add headroom in RX path 

Drivers should reserve some headroom in skb used in receive path,
to avoid future head reallocation.

One possible way to do that is to use dev_alloc_skb() instead
of alloc_skb(), so that NET_SKB_PAD bytes are reserved.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2013-03-20 09:33:19 -07:00 committed by David S. Miller
parent 8fdc929f57
commit 70386d40e1
1 changed files with 1 additions and 1 deletions
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2
drivers/net/ethernet/chelsio/cxgb/sge.c
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@ -835,7 +835,7 @@ static void refill_free_list(struct sge *sge, struct freelQ *q)
struct sk_buff *skb;
dma_addr_t mapping;
skb = alloc_skb(q->rx_buffer_size, GFP_ATOMIC);
skb = dev_alloc_skb(q->rx_buffer_size);
if (!skb)
break;