SKB_PEEK
Section: Networking Functions (9)
Updated: November 24, 1997
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NAME
skb_peek - peek an sk_buff
SYNOPSIS
#include <linux/skbuff.h>
-
struct sk_buff *skb_peek(struct sk_buff_head *list_);
DESCRIPTION
The skb_peek function extracts the head element of list_,
without modifying list_. It is important to note that this is
not necessarily a safe operation, as list_ maintains the original
sk_buff, and other operations on list_ may effect it. To be safe,
either disable interrupts using cli(9), call skb_peek, copy
the data necessary to continue, and re-enable interrupts using
sti(9), or use skb_dequeue(9).
RETURN VALUE
Returns a pointer to sk_buff if there is a next element on the list_.
Otherwise, returns NULL.
AVAILABILITY
Linux 1.0+
SEE ALSO
intro(9), skb_unlink(9), skb_dequeue(9)
/usr/src/linux/net/appletalk/ddp.c /usr/src/linux/net/core/datagram.c /usr/src/linux/net/ipv4/tcp.c /usr/src/linux/net/ipv4/udp.c /usr/src/linux/net/unix/af_unix.c
AUTHOR
Cyrus Durgin <cider@speakeasy.org>