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 *ipip_hdr(const struct sk_buff *skb) 29 { 30 return (struct iphdr *)skb_transport_header(skb); 31 } 32 #endif /* _LINUX_IP_H */ 33