AcoSail/kernel_optimize_test
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bna: use netdev_alloc_skb_ip_align()

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Some workloads need some headroom (NET_SKB_PAD) to avoid expensive
reallocations.

Using netdev_alloc_skb_ip_align() instead of bare skb_alloc() brings the
NET_IP_ALIGN and the NET_SKB_PAD headroom.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
CC: Rasesh Mody <rmody@brocade.com>
CC: Debashis Dutt <ddutt@brocade.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet 2011-07-08 05:29:30 +00:00 committed by David S. Miller
parent 135d23d66c
commit 0a0e2344a6
1 changed files with 2 additions and 4 deletions
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6
drivers/net/bna/bnad.c
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@ -386,14 +386,12 @@ bnad_alloc_n_post_rxbufs(struct bnad *bnad, struct bna_rcb *rcb)
BNA_RXQ_QPGE_PTR_GET(unmap_prod, rcb->sw_qpt, rxent,
wi_range);
}
skb = alloc_skb(rcb->rxq->buffer_size + NET_IP_ALIGN,
GFP_ATOMIC);
skb = netdev_alloc_skb_ip_align(bnad->netdev,
rcb->rxq->buffer_size);
if (unlikely(!skb)) {
BNAD_UPDATE_CTR(bnad, rxbuf_alloc_failed);
goto finishing;
}
skb->dev = bnad->netdev;
skb_reserve(skb, NET_IP_ALIGN);
unmap_array[unmap_prod].skb = skb;
dma_addr = dma_map_single(&bnad->pcidev->dev, skb->data,
rcb->rxq->buffer_size,