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 
ip_hdr(const struct sk_buff * skb)23 static inline struct iphdr *ip_hdr(const struct sk_buff *skb)
24 {
25 	return (struct iphdr *)skb_network_header(skb);
26 }
27 
inner_ip_hdr(const struct sk_buff * skb)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 
ipip_hdr(const struct sk_buff * skb)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 */
38