skbuff: clear tx zero-copy flag
This patch clears tx zero-copy flag as needed. Signed-off-by: Shirley Ma <xma@us.ibm.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Родитель
a05e42c27f
Коммит
a48332f803
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@ -677,6 +677,7 @@ struct sk_buff *skb_clone(struct sk_buff *skb, gfp_t gfp_mask)
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if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
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if (skb_copy_ubufs(skb, gfp_mask))
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return NULL;
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skb_shinfo(skb)->tx_flags &= ~SKBTX_DEV_ZEROCOPY;
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}
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n = skb + 1;
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@ -801,6 +802,7 @@ struct sk_buff *pskb_copy(struct sk_buff *skb, gfp_t gfp_mask)
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kfree(n);
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goto out;
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}
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skb_shinfo(skb)->tx_flags &= ~SKBTX_DEV_ZEROCOPY;
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}
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for (i = 0; i < skb_shinfo(skb)->nr_frags; i++) {
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skb_shinfo(n)->frags[i] = skb_shinfo(skb)->frags[i];
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@ -893,6 +895,7 @@ int pskb_expand_head(struct sk_buff *skb, int nhead, int ntail,
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if (skb_shinfo(skb)->tx_flags & SKBTX_DEV_ZEROCOPY) {
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if (skb_copy_ubufs(skb, gfp_mask))
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goto nofrags;
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skb_shinfo(skb)->tx_flags &= ~SKBTX_DEV_ZEROCOPY;
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}
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for (i = 0; i < skb_shinfo(skb)->nr_frags; i++)
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get_page(skb_shinfo(skb)->frags[i].page);
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