diff options
| author | Pavel Emelyanov <xemul@parallels.com> | 2012-02-21 07:31:18 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-02-21 14:58:57 -0500 |
| commit | da5ef6e51b327b41180b5d1000c06e8d3595a936 (patch) | |
| tree | 88261e4a5edaa8ee113dc7918ce8b2ca2903842f | |
| parent | 3f518bf745cbd6007d8069100fb9cb09e960c872 (diff) | |
skb: Add skb_peek_next helper
Signed-off-by: Pavel Emelyanov <xemul@parallels.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | include/linux/skbuff.h | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/include/linux/skbuff.h b/include/linux/skbuff.h index f3cf43de3c2a..c11a44ea1bf4 100644 --- a/include/linux/skbuff.h +++ b/include/linux/skbuff.h @@ -877,6 +877,24 @@ static inline struct sk_buff *skb_peek(const struct sk_buff_head *list_) } /** + * skb_peek_next - peek skb following the given one from a queue + * @skb: skb to start from + * @list_: list to peek at + * + * Returns %NULL when the end of the list is met or a pointer to the + * next element. The reference count is not incremented and the + * reference is therefore volatile. Use with caution. + */ +static inline struct sk_buff *skb_peek_next(struct sk_buff *skb, + const struct sk_buff_head *list_) +{ + struct sk_buff *next = skb->next; + if (next == (struct sk_buff *)list_) + next = NULL; + return next; +} + +/** * skb_peek_tail - peek at the tail of an &sk_buff_head * @list_: list to peek at * |