1994-05-26 06:39:07 +00:00
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/*
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. 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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* @(#)defs.h 8.1 (Berkeley) 6/5/93
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*/
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1996-05-30 16:31:46 +00:00
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#ident "$Revision: 1.1.3.1 $"
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/* Definitions for RIPv2 routing process.
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*
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* This code is based on the 4.4BSD `routed` daemon, with extensions to
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* support:
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* RIPv2, including variable length subnet masks.
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* Router Discovery
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* aggregate routes in the kernel tables.
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* aggregate advertised routes.
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* maintain spare routes for faster selection of another gateway
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* when the current gateway dies.
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* timers on routes with second granularity so that selection
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* of a new route does not wait 30-60 seconds.
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* tolerance of static routes.
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* tell the kernel hop counts
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* do not advertise if ipforwarding=0
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*
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* The vestigual support for other protocols has been removed. There
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* is no likelihood that IETF RIPv1 or RIPv2 will ever be used with
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* other protocols. The result is far smaller, faster, cleaner, and
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* perhaps understandable.
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*
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* The accumulation of special flags and kludges added over the many
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* years have been simplified and integrated.
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1994-05-26 06:39:07 +00:00
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*/
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1996-05-30 16:31:46 +00:00
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#include <stdio.h>
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#include <netdb.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <string.h>
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#ifdef sgi
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#include <strings.h>
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#include <bstring.h>
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#endif
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#include <stdarg.h>
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#include <syslog.h>
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#include <time.h>
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#include <sys/types.h>
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1994-05-26 06:39:07 +00:00
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#include <sys/param.h>
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1996-05-30 16:31:46 +00:00
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#include <sys/ioctl.h>
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#include <sys/sysctl.h>
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1994-05-26 06:39:07 +00:00
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#include <sys/socket.h>
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1996-05-30 16:31:46 +00:00
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#include <net/if.h>
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1994-05-26 06:39:07 +00:00
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#include <net/route.h>
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1996-05-30 16:31:46 +00:00
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#include <net/radix.h>
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#ifndef sgi
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struct walkarg;
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#endif
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#include <net/if_dl.h>
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1994-05-26 06:39:07 +00:00
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#include <netinet/in.h>
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1996-05-30 16:31:46 +00:00
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#include <arpa/inet.h>
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#define RIPVERSION RIPv2
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1994-05-26 06:39:07 +00:00
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#include <protocols/routed.h>
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1996-05-30 16:31:46 +00:00
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/* Type of an IP address.
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* Some systems do not like to pass structures, so do not use in_addr.
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* Some systems think a long has 64 bits, which would be a gross waste.
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* So define it here so it can be changed for the target system.
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* It should be defined somewhere netinet/in.h, but it is not.
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*/
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#ifdef sgi
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#define naddr __uint32_t
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#else
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#define naddr u_long
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#define _HAVE_SA_LEN
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#define _HAVE_SIN_LEN
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#endif
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1994-05-26 06:39:07 +00:00
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1996-05-30 16:31:46 +00:00
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#ifdef sgi
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/* Turn on if IP_DROP_MEMBERSHIP and IP_ADD_MEMBERSHIP do not look at
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* the dstaddr of point-to-point interfaces.
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*/
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#define MCAST_PPP_BUG
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#endif
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1994-05-26 06:39:07 +00:00
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1996-05-30 16:31:46 +00:00
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#define NEVER (24*60*60) /* a long time */
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#define EPOCH NEVER /* bias time by this to avoid <0 */
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/* Scan the kernel regularly to see if any interfaces have appeared or been
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* turned off. These must be less than STALE_TIME.
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*/
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#define CHECK_BAD_INTERVAL 5 /* when an interface is known bad */
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#define CHECK_ACT_INTERVAL 30 /* when advertising */
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#define CHECK_QUIET_INTERVAL 300 /* when not */
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/* set times to this to continue poisoning a route */
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#define POISON_SECS (GARBAGE_TIME - POISON_TIME)
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#define NET_S_METRIC 1 /* metric used on synthetic routes */
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#define LIM_SEC(s,l) ((s).tv_sec = MIN((s).tv_sec, (l)))
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/* Router Discovery parameters */
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#ifndef sgi
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#define INADDR_ALLROUTERS_GROUP 0xe0000002 /* 224.0.0.2 */
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#endif
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#define MaxMaxAdvertiseInterval 1800
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#define MinMaxAdvertiseInterval 4
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#define DefMaxAdvertiseInterval 600
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#define DEF_PreferenceLevel 0
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#define MIN_PreferenceLevel 0x80000000
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#define MAX_INITIAL_ADVERT_INTERVAL 16
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#define MAX_INITIAL_ADVERTS 3
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#define MAX_RESPONSE_DELAY 2
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#define MAX_SOLICITATION_DELAY 1
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#define SOLICITATION_INTERVAL 3
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#define MAX_SOLICITATIONS 3
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/* typical packet buffers */
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union pkt_buf {
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char packet[MAXPACKETSIZE+1];
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struct rip rip;
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};
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/* Main, daemon routing table structure
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*/
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struct rt_entry {
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struct radix_node rt_nodes[2]; /* radix tree glue */
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u_int rt_state;
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# define RS_IF 0x001 /* for network interface */
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# define RS_NET_SUB 0x002 /* fake net route for subnet */
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# define RS_NET_HOST 0x004 /* fake net route for host */
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# define RS_NET_INT 0x008 /* authority route */
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# define RS_NET_S (RS_NET_SUB | RS_NET_HOST | RS_NET_INT)
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# define RS_SUBNET 0x010 /* subnet route from any source */
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# define RS_LOCAL 0x020 /* loopback for pt-to-pt */
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# define RS_MHOME 0x040 /* from -m */
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# define RS_GW 0x080 /* from -g */
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# define RS_STATIC 0x100 /* from the kernel */
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# define RS_RDISC 0x200 /* from router discovery */
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struct sockaddr_in rt_dst_sock;
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naddr rt_mask;
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struct rt_spare {
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struct interface *rts_ifp;
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naddr rts_gate; /* forward packets here */
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naddr rts_router; /* on the authority of this router */
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char rts_metric;
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u_short rts_tag;
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time_t rts_time; /* timer to junk stale routes */
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#define NUM_SPARES 4
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} rt_spares[NUM_SPARES];
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u_int rt_seqno; /* when last changed */
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char rt_hold_metric;
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time_t rt_hold_down;
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};
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#define rt_dst rt_dst_sock.sin_addr.s_addr
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#define rt_ifp rt_spares[0].rts_ifp
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#define rt_gate rt_spares[0].rts_gate
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#define rt_router rt_spares[0].rts_router
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#define rt_metric rt_spares[0].rts_metric
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#define rt_tag rt_spares[0].rts_tag
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#define rt_time rt_spares[0].rts_time
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#define HOST_MASK 0xffffffff
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#define RT_ISHOST(rt) ((rt)->rt_mask == HOST_MASK)
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/* age all routes that
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* are not from -g, -m, or static routes from the kernel
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* not unbroken interface routes
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* but not broken interfaces
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* nor non-passive, remote interfaces that are not aliases
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* (i.e. remote & metric=0)
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*/
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#define AGE_RT(rt,ifp) (0 == ((rt)->rt_state & (RS_GW | RS_MHOME | RS_STATIC \
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| RS_NET_SUB | RS_NET_HOST \
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| RS_RDISC)) \
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&& (!((rt)->rt_state & RS_IF) \
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|| (ifp) == 0 \
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|| (((ifp)->int_state & IS_REMOTE) \
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&& !((ifp)->int_state & IS_PASSIVE))))
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/* true if A is better than B
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* Better if
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* - A is not a poisoned route
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* - and A is not stale
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* - and A has a shorter path
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* - or is the router speaking for itself
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* - or the current route is equal but stale
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*/
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#define BETTER_LINK(A, B) ((A)->rts_metric != HOPCNT_INFINITY \
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&& now_stale <= (A)->rts_time \
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&& ((A)->rts_metric < (B)->rts_metric \
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|| ((A)->rts_gate == (A)->rts_router \
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&& (B)->rts_gate != (B)->rts_router) \
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|| ((A)->rts_metric == (B)->rts_metric \
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&& now_stale > (B)->rts_time)))
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/* An "interface" is similar to a kernel ifnet structure, except it also
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* handles "logical" or "IS_REMOTE" interfaces (remote gateways).
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1994-05-26 06:39:07 +00:00
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*/
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1996-05-30 16:31:46 +00:00
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struct interface {
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struct interface *int_next, *int_prev;
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char int_name[IFNAMSIZ+15+1]; /* big enough for IS_REMOTE */
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u_short int_index;
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naddr int_addr; /* address on this host (net order) */
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naddr int_brdaddr; /* broadcast address (n) */
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naddr int_dstaddr; /* other end of pt-to-pt link (n) */
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naddr int_net; /* working network # (host order)*/
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naddr int_mask; /* working net mask (host order) */
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naddr int_std_addr; /* class A/B/C address (n) */
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naddr int_std_net; /* class A/B/C network (h) */
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naddr int_std_mask; /* class A/B/C netmask (h) */
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naddr int_host_addr; /* RIPv1 net for pt-to-pt link (h) */
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naddr int_host_mask; /* RIPv1 mask for pt-to-pt (h) */
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int int_rip_sock; /* for queries */
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int int_if_flags; /* copied from kernel */
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u_int int_state;
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time_t int_act_time; /* last thought healthy */
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time_t int_quiet_time; /* last inactive */
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u_short int_transitions; /* times gone up-down */
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char int_metric;
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char int_d_metric; /* for faked default route */
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u_int int_data_ipackets; /* previous network stats */
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u_int int_data_ierrors;
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u_int int_data_opackets;
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u_int int_data_oerrors;
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#ifdef sgi
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u_int int_data_odrops;
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#endif
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time_t int_data_ts; /* timestamp on network stats */
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char int_passwd[RIP_AUTH_PW_LEN]; /* RIPv2 password */
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int int_rdisc_pref; /* advertised rdisc preference */
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int int_rdisc_int; /* MaxAdvertiseInterval */
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int int_rdisc_cnt;
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struct timeval int_rdisc_timer;
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};
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#define IS_ALIAS 0x0000001 /* interface alias */
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#define IS_SUBNET 0x0000002 /* interface on subnetted network */
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#define IS_REMOTE 0x0000004 /* interface is not on this machine */
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#define IS_PASSIVE 0x0000008 /* remote and does not do RIP */
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#define IS_EXTERNAL 0x0000010 /* handled by EGP or something */
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#define IS_CHECKED 0x0000020 /* still exists */
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#define IS_ALL_HOSTS 0x0000040 /* in INADDR_ALLHOSTS_GROUP */
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#define IS_ALL_ROUTERS 0x0000080 /* in INADDR_ALLROUTERS_GROUP */
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#define IS_RIP_QUERIED 0x0000100 /* query broadcast */
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#define IS_BROKE 0x0000200 /* seems to be broken */
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#define IS_ACTIVE 0x0000400 /* heard from it at least once */
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#define IS_QUIET 0x0000800 /* have not heard from it recently */
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#define IS_NEED_NET_SUB 0x0001000 /* need RS_NET_SUB route */
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#define IS_NO_AG 0x0002000 /* do not aggregate subnets */
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#define IS_NO_SUPER_AG 0x0004000 /* do not aggregate networks */
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#define IS_NO_RIPV1_IN 0x0008000 /* no RIPv1 input at all */
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#define IS_NO_RIPV2_IN 0x0010000 /* no RIPv2 input at all */
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#define IS_NO_RIP_IN (IS_NO_RIPV2_IN | IS_NO_RIPV2_IN)
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#define IS_NO_RIPV1_OUT 0x0020000 /* no RIPv1 output at all */
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#define IS_NO_RIPV2_OUT 0x0040000 /* no RIPv2 output at all */
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#define IS_NO_RIP_OUT (IS_NO_RIPV1_OUT | IS_NO_RIPV2_OUT)
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#define IS_NO_ADV_IN 0x0080000
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#define IS_NO_SOL_OUT 0x0100000 /* no solicitations */
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#define IS_SOL_OUT 0x0200000 /* send solicitations */
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#define GROUP_IS_SOL (IS_NO_ADV_IN|IS_NO_SOL_OUT)
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#define IS_NO_ADV_OUT 0x0400000 /* do not advertise rdisc */
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#define IS_ADV_OUT 0x0800000 /* advertise rdisc */
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#define GROUP_IS_ADV (IS_NO_ADV_OUT|IS_ADV_OUT)
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#define IS_BCAST_RDISC 0x1000000 /* broadcast instead of multicast */
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#ifdef sgi
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#define IFF_UP_RUNNING (IFF_RUNNING|IFF_UP)
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#else
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#define IFF_UP_RUNNING IFF_UP
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#endif
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#define iff_alive(f) (((f) & IFF_UP_RUNNING) == IFF_UP_RUNNING)
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/* Information for aggregating routes */
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#define NUM_AG_SLOTS 32
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struct ag_info {
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struct ag_info *ag_fine; /* slot with finer netmask */
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struct ag_info *ag_cors; /* more coarse netmask */
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naddr ag_dst_h; /* destination in host byte order */
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naddr ag_mask;
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naddr ag_gate;
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char ag_metric; /* metric to be advertised */
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char ag_pref; /* aggregate based on this */
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u_int ag_seqno;
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u_short ag_tag;
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u_short ag_state;
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#define AGS_SUPPRESS 0x01 /* combine with coaser mask */
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#define AGS_PROMOTE 0x002 /* synthesize combined routes */
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#define AGS_REDUN0 0x004 /* redundant, finer routes output */
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#define AGS_REDUN1 0x008
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#define AG_IS_REDUN(state) (((state) & (AGS_REDUN0 | AGS_REDUN1)) \
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== (AGS_REDUN0 | AGS_REDUN1))
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#define AGS_GATEWAY 0x010 /* tell kernel RTF_GATEWAY */
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#define AGS_RIPV2 0x020 /* send only as RIPv2 */
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#define AGS_DEAD 0x080 /* dead--ignore differing gate */
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#define AGS_RDISC 0x100 /* suppresses most routes */
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};
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/* parameters for interfaces */
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extern struct parm {
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struct parm *parm_next;
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char parm_name[IFNAMSIZ+1];
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naddr parm_a_h;
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naddr parm_m;
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char parm_d_metric;
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u_int parm_int_state;
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int parm_rdisc_pref;
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int parm_rdisc_int;
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char parm_passwd[RIP_AUTH_PW_LEN+1];
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} *parms;
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/* authority for internal networks */
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extern struct intnet {
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struct intnet *intnet_next;
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naddr intnet_addr;
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naddr intnet_mask;
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} *intnets;
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extern pid_t mypid;
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extern naddr myaddr; /* main address of this system */
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extern int stopint; /* !=0 to stop */
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extern int sock_max;
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extern int rip_sock; /* RIP socket */
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extern struct interface *rip_sock_mcast; /* current multicast interface */
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extern int rt_sock; /* routing socket */
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extern int rt_sock_seqno;
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extern int rdisc_sock; /* router-discovery raw socket */
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extern int seqno; /* sequence number for messages */
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extern int supplier; /* process should supply updates */
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extern int default_gateway; /* 1=advertise default */
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extern int lookforinterfaces; /* 1=probe for new up interfaces */
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extern int supplier_set; /* -s or -q requested */
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extern int ridhosts; /* 1=reduce host routes */
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extern int ppp_noage; /* 1=do not age quiet link routes */
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|
extern int mhome; /* 1=want multi-homed host route */
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|
extern int advertise_mhome; /* 1=must continue adverising it */
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|
extern int auth_ok; /* 1=ignore auth if we do not care */
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|
extern struct timeval epoch; /* when started */
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|
extern struct timeval now; /* current idea of time */
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|
extern time_t now_stale;
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|
|
extern time_t now_garbage;
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extern struct timeval next_bcast; /* next general broadcast */
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|
extern struct timeval age_timer; /* next check of old routes */
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|
|
extern struct timeval no_flash; /* inhibit flash update until then */
|
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|
|
extern struct timeval rdisc_timer; /* next advert. or solicitation */
|
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|
|
extern int rdisc_ok; /* using solicited route */
|
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|
|
extern struct timeval ifinit_timer; /* time to check interfaces */
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|
|
extern naddr loopaddr; /* our address on loopback */
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|
|
extern int tot_interfaces; /* # of remote and local interfaces */
|
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|
|
extern int rip_interfaces; /* # of interfaces doing RIP */
|
|
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|
|
extern struct interface *ifnet; /* all interfaces */
|
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|
|
extern int have_ripv1; /* have a RIPv1 interface */
|
|
|
|
|
extern int need_flash; /* flash update needed */
|
|
|
|
|
extern struct timeval need_kern; /* need to update kernel table */
|
|
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|
|
extern int update_seqno; /* a route has changed */
|
|
|
|
|
|
|
|
|
|
extern u_int tracelevel, new_tracelevel;
|
|
|
|
|
#define MAX_TRACELEVEL 3
|
|
|
|
|
#define TRACEPACKETS (tracelevel >= 2) /* note packets */
|
|
|
|
|
#define TRACECONTENTS (tracelevel >= 3) /* display packet contents */
|
|
|
|
|
#define TRACEACTIONS (tracelevel != 0)
|
|
|
|
|
extern FILE *ftrace; /* output trace file */
|
|
|
|
|
|
|
|
|
|
extern struct radix_node_head *rhead;
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
#ifdef sgi
|
|
|
|
|
/* Fix conflicts */
|
|
|
|
|
#define dup2(x,y) BSDdup2(x,y)
|
|
|
|
|
#endif /* sgi */
|
|
|
|
|
|
|
|
|
|
extern void fix_sock(int, char *);
|
|
|
|
|
extern void fix_select(void);
|
|
|
|
|
extern void rip_off(void);
|
|
|
|
|
extern void rip_on(struct interface *);
|
|
|
|
|
|
|
|
|
|
enum output_type {OUT_QUERY, OUT_UNICAST, OUT_BROADCAST, OUT_MULTICAST};
|
|
|
|
|
extern int output(enum output_type, struct sockaddr_in *,
|
|
|
|
|
struct interface *, struct rip *, int);
|
|
|
|
|
extern void rip_query(void);
|
|
|
|
|
extern void rip_bcast(int);
|
|
|
|
|
extern void supply(struct sockaddr_in *, struct interface *,
|
|
|
|
|
enum output_type, int, int);
|
|
|
|
|
|
|
|
|
|
extern void msglog(char *, ...);
|
|
|
|
|
#define LOGERR(msg) msglog(msg ": %s", strerror(errno))
|
|
|
|
|
extern void logbad(int, char *, ...);
|
|
|
|
|
#define BADERR(dump,msg) logbad(dump,msg ": %s", strerror(errno))
|
|
|
|
|
#ifdef DEBUG
|
|
|
|
|
#define DBGERR(dump,msg) BADERR(dump,msg)
|
|
|
|
|
#else
|
|
|
|
|
#define DBGERR(dump,msg) LOGERR(msg)
|
|
|
|
|
#endif
|
|
|
|
|
#ifdef MCAST_PPP_BUG
|
|
|
|
|
extern void mcasterr(struct interface *, int, char *);
|
|
|
|
|
#define MCASTERR(ifp,dump,msg) mcasterr(ifp, dump, "setsockopt(IP_"msg")")
|
|
|
|
|
#else
|
|
|
|
|
#define MCASTERR(ifp, dump,msg) DBGERR(dump,"setsockopt(IP_" msg ")")
|
|
|
|
|
#endif
|
|
|
|
|
extern char *naddr_ntoa(naddr);
|
|
|
|
|
extern char *saddr_ntoa(struct sockaddr *);
|
|
|
|
|
|
|
|
|
|
extern void timevaladd(struct timeval *, struct timeval *);
|
|
|
|
|
extern void intvl_random(struct timeval *, u_long, u_long);
|
|
|
|
|
extern int getnet(char *, naddr *, naddr *);
|
|
|
|
|
extern int gethost(char *, naddr *);
|
|
|
|
|
extern void gwkludge(void);
|
|
|
|
|
extern char *parse_parms(char *);
|
|
|
|
|
extern void get_parms(struct interface *);
|
|
|
|
|
|
|
|
|
|
extern void lastlog(void);
|
|
|
|
|
extern void trace_on(char *, int);
|
|
|
|
|
extern void trace_off(char*, char*);
|
|
|
|
|
extern void trace_flush(void);
|
|
|
|
|
extern void set_tracelevel(void);
|
|
|
|
|
extern void trace_msg(char *, ...);
|
|
|
|
|
extern void trace_add_del(char *, struct rt_entry *);
|
|
|
|
|
extern void trace_change(struct rt_entry *, u_int, naddr, naddr, int,
|
|
|
|
|
u_short, struct interface *, time_t, char *);
|
|
|
|
|
extern void trace_if(char *, struct interface *);
|
|
|
|
|
extern void trace_upslot(struct rt_entry *, struct rt_spare *,
|
|
|
|
|
naddr, naddr,
|
|
|
|
|
struct interface *, int, u_short, time_t);
|
|
|
|
|
extern void trace_rip(char*, char*, struct sockaddr_in *,
|
|
|
|
|
struct interface *, struct rip *, int);
|
|
|
|
|
extern char *addrname(naddr, naddr, int);
|
|
|
|
|
|
|
|
|
|
extern void rdisc_age(naddr);
|
|
|
|
|
extern void set_rdisc_mg(struct interface *, int);
|
|
|
|
|
extern void set_supplier(void);
|
|
|
|
|
extern void ifbad_rdisc(struct interface *);
|
|
|
|
|
extern void ifok_rdisc(struct interface *);
|
|
|
|
|
extern void read_rip(int, struct interface *);
|
|
|
|
|
extern void read_rt(void);
|
|
|
|
|
extern void read_d(void);
|
|
|
|
|
extern void rdisc_adv(void);
|
|
|
|
|
extern void rdisc_sol(void);
|
|
|
|
|
|
|
|
|
|
extern void sigalrm(int);
|
|
|
|
|
extern void sigterm(int);
|
|
|
|
|
|
|
|
|
|
extern void sigtrace_on(int);
|
|
|
|
|
extern void sigtrace_off(int);
|
|
|
|
|
|
|
|
|
|
extern void fix_kern(void);
|
|
|
|
|
extern void flush_kern(void);
|
|
|
|
|
extern void age(naddr);
|
|
|
|
|
|
|
|
|
|
extern void ag_flush(naddr, naddr, void (*)(struct ag_info *));
|
|
|
|
|
extern void ag_check(naddr, naddr, naddr, char, char, u_int,
|
|
|
|
|
u_short, u_short, void (*)(struct ag_info *));
|
|
|
|
|
extern void del_static(naddr, naddr, int);
|
|
|
|
|
extern void del_redirects(naddr, time_t);
|
|
|
|
|
extern struct rt_entry *rtget(naddr, naddr);
|
|
|
|
|
extern struct rt_entry *rtfind(naddr);
|
|
|
|
|
extern void rtinit(void);
|
|
|
|
|
extern void rtadd(naddr, naddr, naddr, naddr,
|
|
|
|
|
int, u_short, u_int, struct interface *);
|
|
|
|
|
extern void rtchange(struct rt_entry *, u_int, naddr,naddr, int, u_short,
|
|
|
|
|
struct interface *ifp, time_t, char *);
|
|
|
|
|
extern void rtdelete(struct rt_entry *);
|
|
|
|
|
extern void rtbad_sub(struct rt_entry *);
|
|
|
|
|
extern void rtswitch(struct rt_entry *, struct rt_spare *);
|
|
|
|
|
extern void rtbad(struct rt_entry *);
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
extern struct rt_addrinfo rtinfo;
|
|
|
|
|
#define S_ADDR(x) (((struct sockaddr_in *)(x))->sin_addr.s_addr)
|
|
|
|
|
#define RTINFO_DST rtinfo.rti_info[RTAX_DST]
|
|
|
|
|
#define RTINFO_GATE rtinfo.rti_info[RTAX_GATEWAY]
|
|
|
|
|
#define RTINFO_NETMASK rtinfo.rti_info[RTAX_NETMASK]
|
|
|
|
|
#define RTINFO_IFA rtinfo.rti_info[RTAX_IFA]
|
|
|
|
|
#define RTINFO_AUTHOR rtinfo.rti_info[RTAX_AUTHOR]
|
|
|
|
|
#define RTINFO_BRD rtinfo.rti_info[RTAX_BRD]
|
|
|
|
|
#define RTINFO_IFP ((struct sockaddr_dl *)rtinfo.rti_info[RTAX_IFP])
|
|
|
|
|
void rt_xaddrs(struct sockaddr *, struct sockaddr *, int);
|
|
|
|
|
|
|
|
|
|
extern naddr std_mask(naddr);
|
|
|
|
|
extern naddr ripv1_mask_net(naddr, struct interface *, struct interface *);
|
|
|
|
|
extern naddr ripv1_mask_host(naddr,struct interface *, struct interface *);
|
|
|
|
|
#define on_net(tgt, net, mask) ((ntohl(tgt) & mask) == (net & mask))
|
|
|
|
|
extern int check_dst(naddr);
|
|
|
|
|
#ifdef sgi
|
|
|
|
|
extern int sysctl(int *, u_int, void *, size_t *, void *, size_t);
|
|
|
|
|
#endif
|
|
|
|
|
extern void addrouteforif(register struct interface *);
|
|
|
|
|
extern void ifinit(void);
|
|
|
|
|
extern int walk_bad(struct radix_node *, struct walkarg *);
|
|
|
|
|
extern int ifok(struct interface *, char *);
|
|
|
|
|
extern void ifbad(struct interface *, char *);
|
|
|
|
|
extern struct interface *ifwithaddr(naddr, int, int);
|
|
|
|
|
extern struct interface *ifwithname(char *, naddr);
|
|
|
|
|
extern struct interface *ifwithindex(u_short);
|
|
|
|
|
extern struct interface *iflookup(naddr);
|
