92 lines
3.9 KiB
C
92 lines
3.9 KiB
C
/*
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* Copyright (c) 1983 Regents of the University of California.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)interface.h 5.6 (Berkeley) 6/1/90
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* $Id: interface.h,v 1.4 1993/08/01 18:24:36 mycroft Exp $
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*/
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/*
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* Routing table management daemon.
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*/
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/*
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* An ``interface'' is similar to an ifnet structure,
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* except it doesn't contain q'ing info, and it also
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* handles ``logical'' interfaces (remote gateways
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* that we want to keep polling even if they go down).
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* The list of interfaces which we maintain is used
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* in supplying the gratuitous routing table updates.
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*/
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struct interface {
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struct interface *int_next;
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struct sockaddr int_addr; /* address on this host */
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union {
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struct sockaddr intu_broadaddr;
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struct sockaddr intu_dstaddr;
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} int_intu;
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#define int_broadaddr int_intu.intu_broadaddr /* broadcast address */
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#define int_dstaddr int_intu.intu_dstaddr /* other end of p-to-p link */
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int int_metric; /* init's routing entry */
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int int_flags; /* see below */
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/* START INTERNET SPECIFIC */
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u_long int_net; /* network # */
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u_long int_netmask; /* net mask for addr */
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u_long int_subnet; /* subnet # */
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u_long int_subnetmask; /* subnet mask for addr */
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/* END INTERNET SPECIFIC */
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struct ifdebug int_input, int_output; /* packet tracing stuff */
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int int_ipackets; /* input packets received */
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int int_opackets; /* output packets sent */
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char *int_name; /* from kernel if structure */
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u_short int_transitions; /* times gone up-down */
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};
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/*
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* 0x1 to 0x10 are reused from the kernel's ifnet definitions,
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* the others agree with the RTS_ flags defined elsewhere.
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*/
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#define IFF_UP 0x1 /* interface is up */
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#define IFF_BROADCAST 0x2 /* broadcast address valid */
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#define IFF_DEBUG 0x4 /* turn on debugging */
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#define IFF_LOOPBACK 0x8 /* software loopback net */
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#define IFF_POINTOPOINT 0x10 /* interface is point-to-point link */
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#define IFF_SUBNET 0x1000 /* interface on subnetted network */
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#define IFF_PASSIVE 0x2000 /* can't tell if up/down */
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#define IFF_INTERFACE 0x4000 /* hardware interface */
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#define IFF_REMOTE 0x8000 /* interface isn't on this machine */
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struct interface *if_ifwithaddr();
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struct interface *if_ifwithdstaddr();
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struct interface *if_ifwithnet();
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struct interface *if_iflookup();
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