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kernel/linux-imx6_3.14.28/include/linux/ip.h 1.07 KB
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  /*
   * INET		An implementation of the TCP/IP protocol suite for the LINUX
   *		operating system.  INET is implemented using the  BSD Socket
   *		interface as the means of communication with the user level.
   *
   *		Definitions for the IP protocol.
   *
   * Version:	@(#)ip.h	1.0.2	04/28/93
   *
   * Authors:	Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
   *
   *		This program is free software; you can redistribute it and/or
   *		modify it under the terms of the GNU General Public License
   *		as published by the Free Software Foundation; either version
   *		2 of the License, or (at your option) any later version.
   */
  #ifndef _LINUX_IP_H
  #define _LINUX_IP_H
  
  #include <linux/skbuff.h>
  #include <uapi/linux/ip.h>
  
  static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
  {
  	return (struct iphdr *)skb_network_header(skb);
  }
  
  static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb)
  {
  	return (struct iphdr *)skb_inner_network_header(skb);
  }
  
  static inline struct iphdr *ipip_hdr(const struct sk_buff *skb)
  {
  	return (struct iphdr *)skb_transport_header(skb);
  }
  #endif	/* _LINUX_IP_H */