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