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| author | Pravin B Shelar <pshelar@nicira.com> | 2013-02-14 09:44:49 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2013-02-15 15:10:37 -0500 |
| commit | 14bbd6a565e1bcdc240d44687edb93f721cfdf99 (patch) | |
| tree | b2001bb985856d2177212451273d1f6ebcc55035 /include/linux/skbuff.h | |
| parent | d887199dc28c46788b155b234274d5ff41afed8e (diff) | |
| download | blackbird-op-linux-14bbd6a565e1bcdc240d44687edb93f721cfdf99.tar.gz blackbird-op-linux-14bbd6a565e1bcdc240d44687edb93f721cfdf99.zip | |
net: Add skb_unclone() helper function.
This function will be used in next GRE_GSO patch. This patch does
not change any functionality.
Signed-off-by: Pravin B Shelar <pshelar@nicira.com>
Acked-by: Eric Dumazet <edumazet@google.com>
Diffstat (limited to 'include/linux/skbuff.h')
| -rw-r--r-- | include/linux/skbuff.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index 9da99520ccd5..ca6ee7d93edb 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -804,6 +804,16 @@ static inline int skb_cloned(const struct sk_buff *skb) (atomic_read(&skb_shinfo(skb)->dataref) & SKB_DATAREF_MASK) != 1; } +static inline int skb_unclone(struct sk_buff *skb, gfp_t pri) +{ + might_sleep_if(pri & __GFP_WAIT); + + if (skb_cloned(skb)) + return pskb_expand_head(skb, 0, 0, pri); + + return 0; +} + /** * skb_header_cloned - is the header a clone * @skb: buffer to check |
