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
  23 static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
  24 {
  25         return (struct iphdr *)skb_network_header(skb);
  26 }
  27
  28 static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb)
  29 {
  30         return (struct iphdr *)skb_inner_network_header(skb);
  31 }
  32
  33 static 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 */