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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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6
drivers/net/ethernet/sun/niu.c
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@@ -3594,7 +3594,7 @@ static int release_tx_packet(struct niu *np, struct tx_ring_info *rp, int idx)
tb = &rp->tx_buffs[idx];
BUG_ON(tb->skb != NULL);
np->ops->unmap_page(np->device, tb->mapping,
skb_shinfo(skb)->frags[i].size,
skb_frag_size(&skb_shinfo(skb)->frags[i]),
DMA_TO_DEVICE);
idx = NEXT_TX(rp, idx);
}
@@ -6727,9 +6727,9 @@ static netdev_tx_t niu_start_xmit(struct sk_buff *skb,
}
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
const skb_frag_t *frag = &skb_shinfo(skb)->frags[i];
len = frag->size;
len = skb_frag_size(frag);
mapping = np->ops->map_page(np->device, skb_frag_page(frag),
frag->page_offset, len,
DMA_TO_DEVICE);