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1/* Copyright (C) 1997 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
13
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA. */
18
19/* Based on the 4.4BSD and Linux version of this file. */
20
21#ifndef _NET_ROUTE_H
22
23#define _NET_ROUTE_H 1
24#include <features.h>
25
26#include <sys/socket.h>
27#include <sys/types.h>
28
29
30/* This structure gets passed by the SIOCADDRT and SIOCDELRT calls. */
31struct rtentry
32 {
33 unsigned long int rt_pad1;
34 struct sockaddr rt_dst; /* Target address. */
35 struct sockaddr rt_gateway; /* Gateway addr (RTF_GATEWAY). */
36 struct sockaddr rt_genmask; /* Target network mask (IP). */
37 unsigned short int rt_flags;
38 short int rt_pad2;
39 unsigned long int rt_pad3;
40 unsigned char rt_tos;
41 unsigned char rt_class;
42 short int rt_pad4;
43 short int rt_metric; /* +1 for binary compatibility! */
44 char *rt_dev; /* Forcing the device at add. */
45 unsigned long int rt_mtu; /* Per route MTU/Window. */
46 unsigned long int rt_window; /* Window clamping. */
47 unsigned short int rt_irtt; /* Initial RTT. */
48 };
49/* Compatibility hack. */
50#define rt_mss rt_mtu
51
52
53#define RTF_UP 0x0001 /* Route usable. */
54#define RTF_GATEWAY 0x0002 /* Destination is a gateway. */
55
56#define RTF_HOST 0x0004 /* Host entry (net otherwise). */
57#define RTF_REINSTATE 0x0008 /* Reinstate route after timeout. */
58#define RTF_DYNAMIC 0x0010 /* Created dyn. (by redirect). */
59#define RTF_MODIFIED 0x0020 /* Modified dyn. (by redirect). */
60#define RTF_MTU 0x0040 /* Specific MTU for this route. */
61#define RTF_MSS RTF_MTU /* Compatibility. */
62#define RTF_WINDOW 0x0080 /* Per route window clamping. */
63#define RTF_IRTT 0x0100 /* Initial round trip time. */
64#define RTF_REJECT 0x0200 /* Reject route. */
65#define RTF_STATIC 0x0400 /* Manually injected route. */
66#define RTF_XRESOLVE 0x0800 /* External resolver. */
67#define RTF_NOFORWARD 0x1000 /* Forwarding inhibited. */
68#define RTF_THROW 0x2000 /* Go to next class. */
69#define RTF_NOPMTUDISC 0x4000 /* Do not send packets with DF. */
70
71/* Bad idea. IPv6 should not use broken IPv4 interface. */
72
73#define RTF_ADDRCONF 0x0800 /* Announced on link prefix. */
74#define RTF_INVALID 0x1000
75#define RTF_DCACHE 0x2000
76#define RTF_DEFAULT 0x4000 /* Route is a default route. */
77#define RTF_NEXTHOP 0x8000 /* Non gateway route with nexthop. */
78
79
80#define RTF_MAGIC 0x10000 /* Route added/deleted authomatically,
81 when interface changes its state. */
82
83#define RTCF_VALVE 0x00200000
84#define RTCF_MASQ 0x00400000
85#define RTCF_NAT 0x00800000
86#define RTCF_DOREDIRECT 0x01000000
87#define RTCF_LOG 0x02000000
88#define RTCF_DIRECTSRC 0x04000000
89
90#define RTF_LOCAL 0x80000000
91#define RTF_INTERFACE 0x40000000
92#define RTF_MULTICAST 0x20000000
93#define RTF_BROADCAST 0x10000000
94#define RTF_NAT 0x08000000
95
96#define RTF_ADDRCLASSMASK 0xF8000000
97#define RT_ADDRCLASS(flags) ((__u_int32_t) flags >> 23)
98
99#define RT_TOS(tos) ((tos) & IPTOS_TOS_MASK)
100
101#define RT_LOCALADDR(flags) ((flags & RTF_ADDRCLASSMASK) \
102 == (RTF_LOCAL|RTF_INTERFACE))
103
104#define RT_CLASS_UNSPEC 0
105#define RT_CLASS_DEFAULT 253
106
107#define RT_CLASS_MAIN 254
108#define RT_CLASS_LOCAL 255
109#define RT_CLASS_MAX 255
110
111
112#define RTMSG_ACK NLMSG_ACK
113#define RTMSG_OVERRUN NLMSG_OVERRUN
114
115#define RTMSG_NEWDEVICE 0x11
116#define RTMSG_DELDEVICE 0x12
117#define RTMSG_NEWROUTE 0x21
118#define RTMSG_DELROUTE 0x22
119#define RTMSG_NEWRULE 0x31
120#define RTMSG_DELRULE 0x32
121#define RTMSG_CONTROL 0x40
122
123#define RTMSG_AR_FAILED 0x51 /* Address Resolution failed. */
124
125#endif /* net/route.h */