Re: [PATCH 3/6] skb: Add skb_peek_next helper
From: Eric Dumazet <hidden>
Date: 2012-02-21 17:43:58
Le mardi 21 février 2012 à 21:31 +0400, Pavel Emelyanov a écrit :
quoted hunk ↗ jump to hunk
Signed-off-by: Pavel Emelyanov <redacted> --- 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 f3cf43d..c11a44e 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 *
Acked-by: Eric Dumazet <redacted>