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[unix-history] / sbin / XNSrouted / interface.h
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78ed81a3 1/*
2 * Copyright (c) 1983 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by the University of
16 * California, Berkeley and its contributors.
17 * 4. Neither the name of the University nor the names of its contributors
18 * may be used to endorse or promote products derived from this software
19 * without specific prior written permission.
20 *
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 * SUCH DAMAGE.
32 *
33 * @(#)interface.h 5.5 (Berkeley) 6/1/90
34 */
35
36/*
37 * Routing table management daemon.
38 */
39
40/*
41 * An ``interface'' is similar to an ifnet structure,
42 * except it doesn't contain q'ing info, and it also
43 * handles ``logical'' interfaces (remote gateways
44 * that we want to keep polling even if they go down).
45 * The list of interfaces which we maintain is used
46 * in supplying the gratuitous routing table updates.
47 * We list only one address for each interface, the AF_XNS one.
48 */
49#define NIFADDR 3
50struct interface {
51 struct interface *int_next;
52 struct sockaddr int_addr; /* address on this host */
53 union {
54 struct sockaddr intu_broadaddr;
55 struct sockaddr intu_dstaddr;
56 } int_intu;
57#define int_broadaddr int_intu.intu_broadaddr /* broadcast address */
58#define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */
59 int int_metric; /* init's routing entry */
60 int int_flags; /* see below */
61 struct ifdebug int_input, int_output; /* packet tracing stuff */
62 int int_ipackets; /* input packets received */
63 int int_opackets; /* output packets sent */
64 char *int_name; /* from kernel if structure */
65 u_short int_transitions; /* times gone up-down */
66/*XNS Specific entry */
67 struct sameq {
68 struct sameq *n; /* q of other pt-to-pt links */
69 struct sameq *p; /* with same net # */
70 } int_sq;
71};
72
73/*
74 * 0x1 to 0x10 are reused from the kernel's ifnet definitions,
75 * the others agree with the RTS_ flags defined elsewhere.
76 */
77#define IFF_UP 0x1 /* interface is up */
78#define IFF_BROADCAST 0x2 /* broadcast address valid */
79#define IFF_DEBUG 0x4 /* turn on debugging */
80#define IFF_ROUTE 0x8 /* routing entry installed */
81#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
82
83#define IFF_PASSIVE 0x2000 /* can't tell if up/down */
84#define IFF_INTERFACE 0x4000 /* hardware interface */
85#define IFF_REMOTE 0x8000 /* interface isn't on this machine */
86
87struct interface *if_ifwithaddr();
88struct interface *if_ifwithdstaddr();
89struct interface *if_ifwithnet();
90struct interface *if_iflookup();