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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);
}
static inline unsigned int ip_transport_len(const struct sk_buff *skb)
{
return ntohs(ip_hdr(skb)->tot_len) - skb_network_header_len(skb);
}
#endif /* _LINUX_IP_H */