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skbuff: convert to skb_orphan_frags

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Reduce code duplication a bit using the new helper.

Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Michael S. Tsirkin 2012-07-20 09:23:10 +00:00 • committed by David S. Miller
parent a353e0ce0f
commit 70008aa50e
1 changed files with 8 additions and 14 deletions
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22
net/core/skbuff.c
View file

@ -804,10 +804,8 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
{ {
struct sk_buff *n; struct sk_buff *n;
if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) { if (skb_orphan_frags(skb, gfp_mask))
if (skb_copy_ubufs(skb, gfp_mask)) return NULL;
return NULL;
}
n = skb + 1; n = skb + 1;
if (skb->fclone == SKB_FCLONE_ORIG && if (skb->fclone == SKB_FCLONE_ORIG &&
@ -927,12 +925,10 @@ struct sk_buff *__pskb_copy(struct sk_buff *skb, int headroom, gfp_t gfp_mask)
if (skb_shinfo(skb)->nr_frags) { if (skb_shinfo(skb)->nr_frags) {
int i; int i;
if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) { if (skb_orphan_frags(skb, gfp_mask)) {
if (skb_copy_ubufs(skb, gfp_mask)) { kfree_skb(n);
kfree_skb(n); n = NULL;
n = NULL; goto out;
goto out;
}
} }
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) { for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i]; skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
@ -1005,10 +1001,8 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
*/ */
if (skb_cloned(skb)) { if (skb_cloned(skb)) {
/* copy this zero copy skb frags */ /* copy this zero copy skb frags */
if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) { if (skb_orphan_frags(skb, gfp_mask))
if (skb_copy_ubufs(skb, gfp_mask)) goto nofrags;
goto nofrags;
}
for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
skb_frag_ref(skb, i); skb_frag_ref(skb, i);