11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * INET An implementation of the TCP/IP protocol suite for the LINUX 31da177e4SLinus Torvalds * operating system. INET is implemented using the BSD Socket 41da177e4SLinus Torvalds * interface as the means of communication with the user level. 51da177e4SLinus Torvalds * 61da177e4SLinus Torvalds * Definitions for the IP protocol. 71da177e4SLinus Torvalds * 81da177e4SLinus Torvalds * Version: @(#)ip.h 1.0.2 04/28/93 91da177e4SLinus Torvalds * 101da177e4SLinus Torvalds * Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> 111da177e4SLinus Torvalds * 121da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 131da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 141da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 151da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 161da177e4SLinus Torvalds */ 171da177e4SLinus Torvalds #ifndef _LINUX_IP_H 181da177e4SLinus Torvalds #define _LINUX_IP_H 191da177e4SLinus Torvalds 20eddc9ec5SArnaldo Carvalho de Melo #include <linux/skbuff.h> 21607ca46eSDavid Howells #include <uapi/linux/ip.h> 22eddc9ec5SArnaldo Carvalho de Melo 23eddc9ec5SArnaldo Carvalho de Melo static inline struct iphdr *ip_hdr(const struct sk_buff *skb) 24eddc9ec5SArnaldo Carvalho de Melo { 25eddc9ec5SArnaldo Carvalho de Melo return (struct iphdr *)skb_network_header(skb); 26eddc9ec5SArnaldo Carvalho de Melo } 27b0061ce4SArnaldo Carvalho de Melo 28*6a674e9cSJoseph Gasparakis static inline struct iphdr *inner_ip_hdr(const struct sk_buff *skb) 29*6a674e9cSJoseph Gasparakis { 30*6a674e9cSJoseph Gasparakis return (struct iphdr *)skb_inner_network_header(skb); 31*6a674e9cSJoseph Gasparakis } 32*6a674e9cSJoseph Gasparakis 33b0061ce4SArnaldo Carvalho de Melo static inline struct iphdr *ipip_hdr(const struct sk_buff *skb) 34b0061ce4SArnaldo Carvalho de Melo { 359c70220bSArnaldo Carvalho de Melo return (struct iphdr *)skb_transport_header(skb); 36b0061ce4SArnaldo Carvalho de Melo } 371da177e4SLinus Torvalds #endif /* _LINUX_IP_H */ 38