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_ main­
       tains 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>