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>

diff --git a/drivers/net/ethernet/chelsio/cxgb/sge.c b/drivers/net/ethernet/chelsio/cxgb/sge.c
index 482976925154d1dad9d18eebeda003ce1088d2db..89bef504d9dc77a004b12dc4d6f65342bb7f6ac8 100644 (file)
--- a/drivers/net/ethernet/chelsio/cxgb/sge.c
+++ b/drivers/net/ethernet/chelsio/cxgb/sge.c
@@ -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;