LXR linux/include/linux/ip.h

   1/*
   2 * INET         An implementation of the TCP/IP protocol suite for the LINUX
   3 *              operating system.  INET is implemented using the  BSD Socket
   4 *              interface as the means of communication with the user level.
   5 *
   6 *              Definitions for the IP protocol.
   7 *
   8 * Version:     @(#)ip.h        1.0.2   04/28/93
   9 *
  10 * Authors:     Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
  11 *
  12 *              This program is free software; you can redistribute it and/or
  13 *              modify it under the terms of the GNU General Public License
  14 *              as published by the Free Software Foundation; either version
  15 *              2 of the License, or (at your option) any later version.
  16 */
  17#ifndef _LINUX_IP_H
  18#define _LINUX_IP_H
  19
  20#include <linux/skbuff.h>
  21#include <uapi/linux/ip.h>
  22
  23static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
  24{
  25        return (struct iphdr *)skb_network_header(skb);
  26}
  27
  28static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb)
  29{
  30        return (struct iphdr *)skb_inner_network_header(skb);
  31}
  32
  33static inline struct iphdr *ipip_hdr(const struct sk_buff *skb)
  34{
  35        return (struct iphdr *)skb_transport_header(skb);
  36}
  37#endif  /* _LINUX_IP_H */
  38