| 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 |
| 50 | struct 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 | |
| 87 | struct interface *if_ifwithaddr(); |
| 88 | struct interface *if_ifwithdstaddr(); |
| 89 | struct interface *if_ifwithnet(); |
| 90 | struct interface *if_iflookup(); |