GCC Code Coverage Report
Directory: ./ Exec Total Coverage
File: usr.bin/netstat/mroute.c Lines: 0 101 0.0 %
Date: 2017-11-13 Branches: 0 38 0.0 %

Line Branch Exec Source
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/*	$OpenBSD: mroute.c,v 1.25 2015/02/12 23:31:12 claudio Exp $	*/
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/*	$NetBSD: mroute.c,v 1.10 1996/05/11 13:51:27 mycroft Exp $	*/
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/*
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 * Copyright (c) 1989 Stephen Deering
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 * Copyright (c) 1992, 1993
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 *	The Regents of the University of California.  All rights reserved.
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 *
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 * This code is derived from software contributed to Berkeley by
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 * Stephen Deering of Stanford University.
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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. 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: @(#)mroute.c	8.1 (Berkeley) 6/6/93
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 */
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/*
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 * Print multicast routing structures and statistics.
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 *
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 * MROUTING 1.0
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 */
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <netinet/in.h>
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#include <netinet/igmp.h>
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#include <netinet/ip_mroute.h>
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#include <err.h>
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#include <errno.h>
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#include <limits.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <util.h>
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#include "netstat.h"
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void
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mroutepr(void)
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{
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	u_int mrtproto;
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	struct vifinfo *v;
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	struct mfcinfo *m;
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	size_t needed, numvifs, nummfcs, vifi, mfci;
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	char *buf = NULL;
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	char fmtbuf[FMT_SCALED_STRSIZE];
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	vifi_t maxvif = 0;
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	int mib[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
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	size_t len = sizeof(int);
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	int banner_printed = 0, saved_nflag;
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	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
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	    &mrtproto, &len, NULL, 0) == -1) {
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		if (errno != ENOPROTOOPT)
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			warn("mroute");
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		return;
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	}
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	switch (mrtproto) {
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	case 0:
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		printf("no multicast routing compiled into this system\n");
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		return;
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	case IGMP_DVMRP:
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		break;
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	default:
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		printf("multicast routing protocol %u, unknown\n", mrtproto);
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		return;
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	}
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	saved_nflag = nflag;
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	nflag = 1;
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	mib[3] = IPCTL_MRTVIF;
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	needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf);
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	numvifs = needed / sizeof(*v);
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	v = (struct vifinfo *)buf;
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	if (numvifs)
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		maxvif = v[numvifs - 1].v_vifi;
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	for (vifi = 0; vifi < numvifs; ++vifi, ++v) {
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		if (!banner_printed) {
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			printf("\nVirtual Interface Table\n %s%s",
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			    "Vif  Thresh  Limit  Local-Address    ",
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			    "Remote-Address   Pkt_in  Pkt_out\n");
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			banner_printed = 1;
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		}
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		printf(" %3u     %3u  %-15.15s",
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		    v->v_vifi, v->v_threshold,
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		    routename4(v->v_lcl_addr.s_addr));
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		printf("  %-15.15s  %6lu  %7lu\n", (v->v_flags & VIFF_TUNNEL) ?
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		    routename4(v->v_rmt_addr.s_addr) : "",
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		    v->v_pkt_in, v->v_pkt_out);
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	}
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	if (!banner_printed)
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		printf("Virtual Interface Table is empty\n");
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	banner_printed = 0;
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	mib[3] = IPCTL_MRTMFC;
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	needed = get_sysctl(mib, sizeof(mib) / sizeof(mib[0]), &buf);
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	nummfcs = needed / sizeof(*m);
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	m = (struct mfcinfo *)buf;
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	for (mfci = 0; mfci < nummfcs; ++mfci, ++m) {
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		if (!banner_printed) {
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			printf("\nMulticast Forwarding Cache\n %s%s",
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			    "Hash  Origin           Mcastgroup       ",
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			    "Traffic  In-Vif  Out-Vifs/Forw-ttl\n");
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			banner_printed = 1;
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		}
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		printf("  %3zu  %-15.15s",
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		    mfci, routename4(m->mfc_origin.s_addr));
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		fmt_scaled(m->mfc_pkt_cnt, fmtbuf);
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		printf("  %-15.15s  %7s     %3u ",
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		    routename4(m->mfc_mcastgrp.s_addr),
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		    buf, m->mfc_parent);
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		for (vifi = 0; vifi <= maxvif; ++vifi)
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			if (m->mfc_ttls[vifi])
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				printf(" %zu/%u", vifi, m->mfc_ttls[vifi]);
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		printf("\n");
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	}
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	if (!banner_printed)
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		printf("Multicast Forwarding Cache is empty\n");
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	else
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		printf("\nTotal no. of entries in cache: %zu\n", nummfcs);
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	printf("\n");
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	nflag = saved_nflag;
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	free(buf);
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}
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void
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mrt_stats(void)
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{
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	u_int mrtproto;
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	struct mrtstat mrtstat;
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	int mib[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
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	int mib2[] = { CTL_NET, PF_INET, IPPROTO_IP, IPCTL_MRTSTATS };
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	size_t len = sizeof(int);
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	if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
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	    &mrtproto, &len, NULL, 0) == -1) {
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		if (errno != ENOPROTOOPT)
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			warn("mroute");
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		return;
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	}
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	switch (mrtproto) {
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	case 0:
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		printf("no multicast routing compiled into this system\n");
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		return;
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	case IGMP_DVMRP:
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		break;
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	default:
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		printf("multicast routing protocol %u, unknown\n", mrtproto);
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		return;
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	}
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	len = sizeof(mrtstat);
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	if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]),
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	    &mrtstat, &len, NULL, 0) == -1) {
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		if (errno != ENOPROTOOPT)
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			warn("mroute");
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		return;
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	}
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	printf("multicast routing:\n");
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	printf("\t%lu datagram%s with no route for origin\n",
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	    mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route));
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	printf("\t%lu upcall%s made to mrouted\n",
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	    mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls));
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	printf("\t%lu datagram%s with malformed tunnel options\n",
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	    mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel));
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	printf("\t%lu datagram%s with no room for tunnel options\n",
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	    mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel));
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	printf("\t%lu datagram%s arrived on wrong interface\n",
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	    mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if));
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	printf("\t%lu datagram%s dropped due to upcall Q overflow\n",
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	    mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw));
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	printf("\t%lu datagram%s dropped due to upcall socket overflow\n",
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	    mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull));
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	printf("\t%lu datagram%s cleaned up by the cache\n",
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	    mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups));
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	printf("\t%lu datagram%s dropped selectively by ratelimiter\n",
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	    mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel));
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	printf("\t%lu datagram%s dropped - bucket Q overflow\n",
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	    mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow));
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	printf("\t%lu datagram%s dropped - larger than bkt size\n",
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	    mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large));
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}