1/* 2 * Copyright (c) 1983, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Copyright (c) 1995 John Hay. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 * 35 * @(#)interface.h 8.1 (Berkeley) 6/5/93 36 * 37 * $FreeBSD$ 38 */ 39 40/* 41 * Routing table management daemon. 42 */ 43 44/* 45 * An ``interface'' is similar to an ifnet structure, 46 * except it doesn't contain q'ing info, and it also 47 * handles ``logical'' interfaces (remote gateways 48 * that we want to keep polling even if they go down). 49 * The list of interfaces which we maintain is used 50 * in supplying the gratuitous routing table updates. 51 * We list only one address for each interface, the AF_IPX one. 52 */ 53struct interface { 54 struct interface *int_next; 55 struct sockaddr int_addr; /* address on this host */ 56 union { 57 struct sockaddr intu_broadaddr; 58 struct sockaddr intu_dstaddr; 59 } int_intu; 60#define int_broadaddr int_intu.intu_broadaddr /* broadcast address */ 61#define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */ 62 int int_metric; /* init's routing entry */ 63 int int_flags; /* see below */ 64 struct ifdebug int_input, int_output; /* packet tracing stuff */ 65 int int_ipackets; /* input packets received */ 66 int int_opackets; /* output packets sent */ 67 char *int_name; /* from kernel if structure */ 68 u_short int_transitions; /* times gone up-down */ 69 70 /* XXX IPX Specific entry */ 71 struct sameq { 72 struct sameq *n; /* q of other pt-to-pt links */ 73 struct sameq *p; /* with same net # */ 74 } int_sq; 75}; 76 77/* 78 * 0x1 to 0x10 are reused from the kernel's ifnet definitions, 79 * the others agree with the RTS_ flags defined elsewhere. 80 */ 81#define IFF_UP 0x1 /* interface is up */ 82#define IFF_BROADCAST 0x2 /* broadcast address valid */ 83#define IFF_DEBUG 0x4 /* turn on debugging */ 84#define IFF_ROUTE 0x8 /* routing entry installed */ 85#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */ 86 87#define IFF_PASSIVE 0x200000 /* can't tell if up/down */ 88#define IFF_INTERFACE 0x400000 /* hardware interface */ 89#define IFF_REMOTE 0x800000 /* interface isn't on this machine */ 90 91struct interface *if_ifwithaddr(struct sockaddr *); 92struct interface *if_ifwithdstaddr(struct sockaddr *); 93struct interface *if_ifwithnet(struct sockaddr *); 94struct interface *if_iflookup(struct sockaddr *); 95 96