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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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4
drivers/net/xen-netfront.c
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@@ -467,7 +467,7 @@ static void xennet_make_frags(struct sk_buff *skb, struct net_device *dev,
tx->gref = np->grant_tx_ref[id] = ref;
tx->offset = frag->page_offset;
tx->size = frag->size;
tx->size = skb_frag_size(frag);
tx->flags = 0;
}
@@ -965,7 +965,7 @@ err:
if (rx->status > len) {
skb_shinfo(skb)->frags[0].page_offset =
rx->offset + len;
skb_shinfo(skb)->frags[0].size = rx->status - len;
skb_frag_size_set(&skb_shinfo(skb)->frags[0], rx->status - len);
skb->data_len = rx->status - len;
} else {
__skb_fill_page_desc(skb, 0, NULL, 0, 0);