• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
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. */
31 struct 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