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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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8
drivers/net/ethernet/adaptec/starfire.c
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@@ -1256,12 +1256,12 @@ static netdev_tx_t start_tx(struct sk_buff *skb, struct net_device *dev)
np->tx_info[entry].mapping =
pci_map_single(np->pci_dev, skb->data, skb_first_frag_len(skb), PCI_DMA_TODEVICE);
} else {
skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1];
status |= this_frag->size;
const skb_frag_t *this_frag = &skb_shinfo(skb)->frags[i - 1];
status |= skb_frag_size(this_frag);
np->tx_info[entry].mapping =
pci_map_single(np->pci_dev,
skb_frag_address(this_frag),
this_frag->size,
skb_frag_size(this_frag),
PCI_DMA_TODEVICE);
}
@@ -1378,7 +1378,7 @@ static irqreturn_t intr_handler(int irq, void *dev_instance)
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
pci_unmap_single(np->pci_dev,
np->tx_info[entry].mapping,
skb_shinfo(skb)->frags[i].size,
skb_frag_size(&skb_shinfo(skb)->frags[i]),
PCI_DMA_TODEVICE);
np->dirty_tx++;
entry++;