Contributors: 13
Author Tokens Token Proportion Commits Commit Proportion
Arnaldo Carvalho de Melo 92 37.70% 6 28.57%
Xin Long 89 36.48% 1 4.76%
Jon Grimm 18 7.38% 3 14.29%
Linus Torvalds (pre-git) 10 4.10% 2 9.52%
Nikolay Aleksandrov 10 4.10% 1 4.76%
Linus Lüssing 6 2.46% 1 4.76%
Harald Welte 6 2.46% 1 4.76%
David Ahern 5 2.05% 1 4.76%
Thomas Gleixner 2 0.82% 1 4.76%
David Howells 2 0.82% 1 4.76%
Joseph Gasparakis 2 0.82% 1 4.76%
Eric Dumazet 1 0.41% 1 4.76%
Hannes Frederic Sowa 1 0.41% 1 4.76%
Total 244 21 


/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
 * 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>
 */
#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);
}

static inline unsigned int iph_totlen(const struct sk_buff *skb, const struct iphdr *iph)
{
	u32 len = ntohs(iph->tot_len);

	return (len || !skb_is_gso(skb) || !skb_is_gso_tcp(skb)) ?
	       len : skb->len - skb_network_offset(skb);
}

static inline unsigned int skb_ip_totlen(const struct sk_buff *skb)
{
	return iph_totlen(skb, ip_hdr(skb));
}

/* IPv4 datagram length is stored into 16bit field (tot_len) */
#define IP_MAX_MTU	0xFFFFU

static inline void iph_set_totlen(struct iphdr *iph, unsigned int len)
{
	iph->tot_len = len <= IP_MAX_MTU ? htons(len) : 0;
}
#endif	/* _LINUX_IP_H */