From: Pavel Emelyanov <xemul@parallels•com>
To: David Miller <davem@davemloft•net>,
Eric Dumazet <eric.dumazet@gmail•com>,
Linux Netdev List <netdev@vger•kernel.org>
Subject: [PATCH 3/6] skb: Add skb_peek_next helper
Date: Tue, 21 Feb 2012 21:31:18 +0400 [thread overview]
Message-ID: <4F43D4E6.4060206@parallels.com> (raw)
In-Reply-To: <4F43D49E.3010401@parallels.com>
Signed-off-by: Pavel Emelyanov <xemul@parallels•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
*
--
1.5.5.6
next prev parent reply other threads:[~2012-02-21 17:31 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-02-21 17:30 [PATCH net-next 0/6] Ability to peek full socket queue Pavel Emelyanov
2012-02-21 17:30 ` [PATCH 1/6] datagram: Factor out sk queue referencing Pavel Emelyanov
2012-02-21 17:39 ` Eric Dumazet
2012-02-21 20:04 ` David Miller
2012-02-21 17:30 ` [PATCH 2/6] datagram: Add offset argument to __skb_recv_datagram Pavel Emelyanov
2012-02-21 17:40 ` Eric Dumazet
2012-02-21 20:04 ` David Miller
2012-02-21 17:31 ` Pavel Emelyanov [this message]
2012-02-21 17:43 ` [PATCH 3/6] skb: Add skb_peek_next helper Eric Dumazet
2012-02-21 20:04 ` David Miller
2012-02-21 17:31 ` [PATCH 4/6] sock: Introduce the SO_PEEK_OFF sock option Pavel Emelyanov
2012-02-21 17:45 ` Eric Dumazet
2012-02-21 20:05 ` David Miller
2012-02-21 17:31 ` [PATCH 5/6] unix: Support peeking offset for datagram and seqpacket sockets Pavel Emelyanov
2012-02-21 17:49 ` Eric Dumazet
2012-02-21 20:05 ` David Miller
2012-02-21 17:32 ` [PATCH 6/6] unix: Support peeking offset for stream sockets Pavel Emelyanov
2012-02-21 17:51 ` Eric Dumazet
2012-02-21 20:05 ` David Miller
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