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15637ed4 RG |
1 | /* |
2 | * Copyright (c) 1983 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 5.6 (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 | */ | |
48 | struct interface { | |
49 | struct interface *int_next; | |
50 | struct sockaddr int_addr; /* address on this host */ | |
51 | union { | |
52 | struct sockaddr intu_broadaddr; | |
53 | struct sockaddr intu_dstaddr; | |
54 | } int_intu; | |
55 | #define int_broadaddr int_intu.intu_broadaddr /* broadcast address */ | |
56 | #define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */ | |
57 | int int_metric; /* init's routing entry */ | |
58 | int int_flags; /* see below */ | |
59 | /* START INTERNET SPECIFIC */ | |
60 | u_long int_net; /* network # */ | |
61 | u_long int_netmask; /* net mask for addr */ | |
62 | u_long int_subnet; /* subnet # */ | |
63 | u_long int_subnetmask; /* subnet mask for addr */ | |
64 | /* END INTERNET SPECIFIC */ | |
65 | struct ifdebug int_input, int_output; /* packet tracing stuff */ | |
66 | int int_ipackets; /* input packets received */ | |
67 | int int_opackets; /* output packets sent */ | |
68 | char *int_name; /* from kernel if structure */ | |
69 | u_short int_transitions; /* times gone up-down */ | |
70 | }; | |
71 | ||
72 | /* | |
73 | * 0x1 to 0x10 are reused from the kernel's ifnet definitions, | |
74 | * the others agree with the RTS_ flags defined elsewhere. | |
75 | */ | |
76 | #define IFF_UP 0x1 /* interface is up */ | |
77 | #define IFF_BROADCAST 0x2 /* broadcast address valid */ | |
78 | #define IFF_DEBUG 0x4 /* turn on debugging */ | |
79 | #define IFF_LOOPBACK 0x8 /* software loopback net */ | |
80 | #define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ | |
81 | ||
82 | #define IFF_SUBNET 0x1000 /* interface on subnetted network */ | |
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 | ||
87 | struct interface *if_ifwithaddr(); | |
88 | struct interface *if_ifwithdstaddr(); | |
89 | struct interface *if_ifwithnet(); | |
90 | struct interface *if_iflookup(); |