netdev - Re: [PATCH 3/6] skb: Add skb_peek

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Date:	Tue, 21 Feb 2012 18:43:53 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Pavel Emelyanov <xemul@...allels.com>
Cc:	David Miller <davem@...emloft.net>,
	Linux Netdev List <netdev@...r.kernel.org>
Subject: Re: [PATCH 3/6] skb: Add skb_peek_next helper

Le mardi 21 février 2012 à 21:31 +0400, Pavel Emelyanov a écrit :
> Signed-off-by: Pavel Emelyanov <xemul@...allels.com>
> 
> ---
>  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 <eric.dumazet@...il.com>


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