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Code Issues Releases Wiki Activity

[FORCEDETH]: Use skb_tailroom where appropriate

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Reducing the number of skb->data direct accesses.

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-20 12:08:20 -03:00 committed by David S. Miller
parent d004b8d490
commit 8b5be26831
1 changed files with 7 additions and 11 deletions
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18
drivers/net/forcedeth.c
View file

@ -1388,11 +1388,9 @@ static int nv_alloc_rx(struct net_device *dev)
np->put_rx_ctx->skb = skb;
np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
skb->data,
(skb_end_pointer(skb) -
skb->data),
skb_tailroom(skb),
PCI_DMA_FROMDEVICE);
np->put_rx_ctx->dma_len = (skb_end_pointer(skb) -
skb->data);
np->put_rx_ctx->dma_len = skb_tailroom(skb);
np->put_rx.orig->buf = cpu_to_le32(np->put_rx_ctx->dma);
wmb();
np->put_rx.orig->flaglen = cpu_to_le32(np->rx_buf_sz | NV_RX_AVAIL);
@ -1422,11 +1420,9 @@ static int nv_alloc_rx_optimized(struct net_device *dev)
np->put_rx_ctx->skb = skb;
np->put_rx_ctx->dma = pci_map_single(np->pci_dev,
skb->data,
(skb_end_pointer(skb) -
skb->data),
skb_tailroom(skb),
PCI_DMA_FROMDEVICE);
np->put_rx_ctx->dma_len = (skb_end_pointer(skb) -
skb->data);
np->put_rx_ctx->dma_len = skb_tailroom(skb);
np->put_rx.ex->bufhigh = cpu_to_le64(np->put_rx_ctx->dma) >> 32;
np->put_rx.ex->buflow = cpu_to_le64(np->put_rx_ctx->dma) & 0x0FFFFFFFF;
wmb();
@ -4383,12 +4379,12 @@ static int nv_loopback_test(struct net_device *dev)
ret = 0;
goto out;
}
test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
skb_tailroom(tx_skb),
PCI_DMA_FROMDEVICE);
pkt_data = skb_put(tx_skb, pkt_len);
for (i = 0; i < pkt_len; i++)
pkt_data[i] = (u8)(i & 0xff);
test_dma_addr = pci_map_single(np->pci_dev, tx_skb->data,
(skb_end_pointer(tx_skb) -
tx_skb->data), PCI_DMA_FROMDEVICE);
if (np->desc_ver == DESC_VER_1 || np->desc_ver == DESC_VER_2) {
np->tx_ring.orig[0].buf = cpu_to_le32(test_dma_addr);