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net: add skb frag size accessors

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To ease skb->truesize sanitization, its better to be able to localize
all references to skb frags size.

Define accessors : skb_frag_size() to fetch frag size, and
skb_frag_size_{set|add|sub}() to manipulate it.

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Eric Dumazet
2011-10-18 21:00:24 +00:00
committed by David S. Miller
parent dd767856a3
commit 9e903e0852
87 changed files with 387 additions and 357 deletions
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12
drivers/net/ethernet/neterion/s2io.c
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@@ -2350,12 +2350,12 @@ static struct sk_buff *s2io_txdl_getskb(struct fifo_info *fifo_data,
if (frg_cnt) {
txds++;
for (j = 0; j < frg_cnt; j++, txds++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[j];
const skb_frag_t *frag = &skb_shinfo(skb)->frags[j];
if (!txds->Buffer_Pointer)
break;
pci_unmap_page(nic->pdev,
(dma_addr_t)txds->Buffer_Pointer,
frag->size, PCI_DMA_TODEVICE);
skb_frag_size(frag), PCI_DMA_TODEVICE);
}
}
memset(txdlp, 0, (sizeof(struct TxD) * fifo_data->max_txds));
@@ -4185,16 +4185,16 @@ static netdev_tx_t s2io_xmit(struct sk_buff *skb, struct net_device *dev)
frg_cnt = skb_shinfo(skb)->nr_frags;
/* For fragmented SKB. */
for (i = 0; i < frg_cnt; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
/* A '0' length fragment will be ignored */
if (!frag->size)
if (!skb_frag_size(frag))
continue;
txdp++;
txdp->Buffer_Pointer = (u64)skb_frag_dma_map(&sp->pdev->dev,
frag, 0,
frag->size,
skb_frag_size(frag),
DMA_TO_DEVICE);
txdp->Control_1 = TXD_BUFFER0_SIZE(frag->size);
txdp->Control_1 = TXD_BUFFER0_SIZE(skb_frag_size(frag));
if (offload_type == SKB_GSO_UDP)
txdp->Control_1 |= TXD_UFO_EN;
}