1/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2/*
3 * INET		An implementation of the TCP/IP protocol suite for the LINUX
4 *		operating system.  INET is implemented using the  BSD Socket
5 *		interface as the means of communication with the user level.
6 *
7 *		Global definitions for the IP router interface.
8 *
9 * Version:	@(#)route.h	1.0.3	05/27/93
10 *
11 * Authors:	Original taken from Berkeley UNIX 4.3, (c) UCB 1986-1988
12 *		for the purposes of compatibility only.
13 *
14 *		Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
15 *
16 * Changes:
17 *              Mike McLagan    :       Routing by source
18 *
19 *		This program is free software; you can redistribute it and/or
20 *		modify it under the terms of the GNU General Public License
21 *		as published by the Free Software Foundation; either version
22 *		2 of the License, or (at your option) any later version.
23 */
24#ifndef _LINUX_ROUTE_H
25#define _LINUX_ROUTE_H
26
27#include <linux/if.h>
28#include <linux/compiler.h>
29
30/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
31struct rtentry {
32	unsigned long	rt_pad1;
33	struct sockaddr	rt_dst;		/* target address		*/
34	struct sockaddr	rt_gateway;	/* gateway addr (RTF_GATEWAY)	*/
35	struct sockaddr	rt_genmask;	/* target network mask (IP)	*/
36	unsigned short	rt_flags;
37	short		rt_pad2;
38	unsigned long	rt_pad3;
39	void		*rt_pad4;
40	short		rt_metric;	/* +1 for binary compatibility!	*/
41	char __user	*rt_dev;	/* forcing the device at add	*/
42	unsigned long	rt_mtu;		/* per route MTU/Window 	*/
43#ifndef __KERNEL__
44#define rt_mss	rt_mtu			/* Compatibility :-(            */
45#endif
46	unsigned long	rt_window;	/* Window clamping 		*/
47	unsigned short	rt_irtt;	/* Initial RTT			*/
48};
49
50
51#define	RTF_UP		0x0001		/* route usable		  	*/
52#define	RTF_GATEWAY	0x0002		/* destination is a gateway	*/
53#define	RTF_HOST	0x0004		/* host entry (net otherwise)	*/
54#define RTF_REINSTATE	0x0008		/* reinstate route after tmout	*/
55#define	RTF_DYNAMIC	0x0010		/* created dyn. (by redirect)	*/
56#define	RTF_MODIFIED	0x0020		/* modified dyn. (by redirect)	*/
57#define RTF_MTU		0x0040		/* specific MTU for this route	*/
58#define RTF_MSS		RTF_MTU		/* Compatibility :-(		*/
59#define RTF_WINDOW	0x0080		/* per route window clamping	*/
60#define RTF_IRTT	0x0100		/* Initial round trip time	*/
61#define RTF_REJECT	0x0200		/* Reject route			*/
62
63/*
64 *	<linux/ipv6_route.h> uses RTF values >= 64k
65 */
66
67
68
69#endif	/* _LINUX_ROUTE_H */
70
71