* Copyright (c) 1992, 1993

/* $NetBSD: mroute.c,v 1.27 2022/09/01 10:10:20 msaitoh Exp $ */

/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Stephen Deering of Stanford University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)mroute.c 8.1 (Berkeley) 6/6/93
*/

/*
* Copyright (c) 1989 Stephen Deering
*
* This code is derived from software contributed to Berkeley by
* Stephen Deering of Stanford University.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 4. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* from: @(#)mroute.c 8.1 (Berkeley) 6/6/93
*/

#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)mroute.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: mroute.c,v 1.27 2022/09/01 10:10:20 msaitoh Exp $");
#endif
#endif /* not lint */

/*
* Print multicast routing structures and statistics.
*
* MROUTING 1.0
*/

#include <sys/param.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>

#include <net/if.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/igmp.h>
#define _KERNEL
#include <netinet/ip_mroute.h>
#undef _KERNEL

#include <stdio.h>
#include <stdlib.h>
#include <kvm.h>
#include "netstat.h"
#include "rtutil.h"

static char *pktscale(u_long);
static void print_bw_meter(struct bw_meter *, int *);

static char *
pktscale(u_long n)
{
static char buf[20];
char t;

if (n < 1024)
t = ' ';
else if (n < 1024 * 1024) {
t = 'k';
n /= 1024;
} else {
t = 'm';
n /= 1048576;
}

(void)snprintf(buf, sizeof buf, "%lu%c", n, t);
return buf;
}

void
mroutepr(u_long mrpaddr, u_long mfchashtbladdr, u_long mfchashaddr,
u_long vifaddr)
{
u_int mrtproto;
LIST_HEAD(, mfc) *mfchashtbl;
u_long mfchash, i;
struct vif viftable[MAXVIFS];
struct mfc *mfcp, mfc;
struct vif *v;
vifi_t vifi;
int banner_printed;
int saved_numeric_addr;
int numvifs;
int nmfc; /* No. of cache entries */

if (mrpaddr == 0) {
printf("ip_mrtproto: symbol not in namelist\n");
return;
}

kread(mrpaddr, (char *)&mrtproto, sizeof(mrtproto));
switch (mrtproto) {
case 0:
printf("no multicast routing compiled into this system\n");
return;

case IGMP_DVMRP:
break;

default:
printf("multicast routing protocol %u, unknown\n", mrtproto);
return;
}

if (mfchashtbladdr == 0) {
printf("mfchashtbl: symbol not in namelist\n");
return;
}
if (mfchashaddr == 0) {
printf("mfchash: symbol not in namelist\n");
return;
}
if (vifaddr == 0) {
printf("viftable: symbol not in namelist\n");
return;
}

saved_numeric_addr = numeric_addr;
numeric_addr = 1;

kread(vifaddr, (char *)&viftable, sizeof(viftable));
banner_printed = 0;
numvifs = 0;

for (vifi = 0, v = viftable; vifi < MAXVIFS; ++vifi, ++v) {
if (v->v_lcl_addr.s_addr == 0)
continue;
numvifs = vifi;

if (!banner_printed) {
printf("\nVirtual Interface Table\n %s%s",
"Vif Thresh Limit Local-Address ",
"Remote-Address Pkt_in Pkt_out\n");
banner_printed = 1;
}

printf(" %3u %3u %5u %-15.15s",
vifi, v->v_threshold, v->v_rate_limit,
routename4(v->v_lcl_addr.s_addr, nflag));
printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ?
routename4(v->v_rmt_addr.s_addr, nflag) : "",
v->v_pkt_in, v->v_pkt_out);
}
if (!banner_printed)
printf("\nVirtual Interface Table is empty\n");

kread(mfchashtbladdr, (char *)&mfchashtbl, sizeof(mfchashtbl));
kread(mfchashaddr, (char *)&mfchash, sizeof(mfchash));
banner_printed = 0;
nmfc = 0;

if (mfchashtbl != 0)
for (i = 0; i <= mfchash; ++i) {
kread((u_long)&mfchashtbl[i], (char *)&mfcp, sizeof(mfcp));

for (; mfcp != 0; mfcp = mfc.mfc_hash.le_next) {
if (!banner_printed) {
printf("\nMulticast Forwarding Cache\n %s%s",
"Hash Origin Mcastgroup ",
"Traffic In-Vif Out-Vifs/Forw-ttl\n");
banner_printed = 1;
}

kread((u_long)mfcp, (char *)&mfc, sizeof(mfc));
printf(" %3lu %-15.15s",
i, routename4(mfc.mfc_origin.s_addr, nflag));
printf(" %-15.15s %7s %3u ",
routename4(mfc.mfc_mcastgrp.s_addr, nflag),
pktscale(mfc.mfc_pkt_cnt), mfc.mfc_parent);
for (vifi = 0; vifi <= numvifs; ++vifi)
if (mfc.mfc_ttls[vifi])
printf(" %u/%u", vifi,
mfc.mfc_ttls[vifi]);

printf("\n");

/* Print the bw meter information */
{
struct bw_meter bw_meter, *bwm;
int banner_printed2 = 0;

bwm = mfc.mfc_bw_meter;
while (bwm) {
kread((u_long)bwm,
(char *)&bw_meter,
sizeof bw_meter);
print_bw_meter(&bw_meter,
&banner_printed2);
bwm = bw_meter.bm_mfc_next;
}
#if 0 /* Don't ever print it? */
if (! banner_printed2)
printf("\n No Bandwidth Meters\n");
#endif
}

nmfc++;
}
}
if (!banner_printed)
printf("\nMulticast Forwarding Cache is empty\n");
else
printf("\nTotal no. of entries in cache: %d\n", nmfc);

printf("\n");
numeric_addr = saved_numeric_addr;
}

static void
print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
{
char s0[256*3], s1[256], s2[256], s3[256];
struct timeval now, end, delta;

gettimeofday(&now, NULL);

if (! *banner_printed) {
printf(" Bandwidth Meters\n");
printf(" %-30s", "Measured(Start|Packets|Bytes)");
printf(" %s", "Type");
printf(" %-30s", "Thresh(Interval|Packets|Bytes)");
printf(" Remain");
printf("\n");
*banner_printed = 1;
}

/* The measured values */
if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
snprintf(s1, sizeof s1, "%llu",
(unsigned long long)bw_meter->bm_measured.b_packets);
else
snprintf(s1, sizeof s1, "?");
if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
snprintf(s2, sizeof s2, "%llu",
(unsigned long long)bw_meter->bm_measured.b_bytes);
else
snprintf(s2, sizeof s2, "?");
snprintf(s0, sizeof s0, "%lld.%ld|%s|%s",
(long long)bw_meter->bm_start_time.tv_sec,
(long)bw_meter->bm_start_time.tv_usec,
s1, s2);
printf(" %-30s", s0);

/* The type of entry */
snprintf(s0, sizeof s0, "%s", "?");
if (bw_meter->bm_flags & BW_METER_GEQ)
snprintf(s0, sizeof s0, "%s", ">=");
else if (bw_meter->bm_flags & BW_METER_LEQ)
snprintf(s0, sizeof s0, "%s", "<=");
printf(" %-3s", s0);

/* The threshold values */
if (bw_meter->bm_flags & BW_METER_UNIT_PACKETS)
snprintf(s1, sizeof s1, "%llu",
(unsigned long long)bw_meter->bm_threshold.b_packets);
else
snprintf(s1, sizeof s1, "?");
if (bw_meter->bm_flags & BW_METER_UNIT_BYTES)
snprintf(s2, sizeof s2, "%llu",
(unsigned long long)bw_meter->bm_threshold.b_bytes);
else
snprintf(s2, sizeof s2, "?");
snprintf(s0, sizeof s0, "%lld.%ld|%s|%s",
(long long)bw_meter->bm_threshold.b_time.tv_sec,
(long)bw_meter->bm_threshold.b_time.tv_usec,
s1, s2);
printf(" %-30s", s0);

/* Remaining time */
timeradd(&bw_meter->bm_start_time,
&bw_meter->bm_threshold.b_time, &end);
if (timercmp(&now, &end, <=)) {
timersub(&end, &now, &delta);
snprintf(s3, sizeof s3, "%lld.%ld",
(long long)delta.tv_sec, (long)delta.tv_usec);
} else {
/* Negative time */
timersub(&now, &end, &delta);
snprintf(s3, sizeof s3, "-%lld.%ld",
(long long)delta.tv_sec, (long)delta.tv_usec);
}
printf(" %s", s3);

printf("\n");
}

void
mrt_stats(u_long mrpaddr, u_long mstaddr)
{
u_int mrtproto;
struct mrtstat mrtstat;

if (mrpaddr == 0) {
printf("ip_mrtproto: symbol not in namelist\n");
return;
}

kread(mrpaddr, (char *)&mrtproto, sizeof(mrtproto));
switch (mrtproto) {
case 0:
printf("no multicast routing compiled into this system\n");
return;

case IGMP_DVMRP:
break;

default:
printf("multicast routing protocol %u, unknown\n", mrtproto);
return;
}

if (mstaddr == 0) {
printf("mrtstat: symbol not in namelist\n");
return;
}

kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
printf("multicast routing:\n");
printf("\t%lu datagram%s with no route for origin\n",
mrtstat.mrts_no_route, plural(mrtstat.mrts_no_route));
printf("\t%lu upcall%s made to mrouted\n",
mrtstat.mrts_upcalls, plural(mrtstat.mrts_upcalls));
printf("\t%lu datagram%s with malformed tunnel options\n",
mrtstat.mrts_bad_tunnel, plural(mrtstat.mrts_bad_tunnel));
printf("\t%lu datagram%s with no room for tunnel options\n",
mrtstat.mrts_cant_tunnel, plural(mrtstat.mrts_cant_tunnel));
printf("\t%lu datagram%s arrived on wrong interface\n",
mrtstat.mrts_wrong_if, plural(mrtstat.mrts_wrong_if));
printf("\t%lu datagram%s dropped due to upcall Q overflow\n",
mrtstat.mrts_upq_ovflw, plural(mrtstat.mrts_upq_ovflw));
printf("\t%lu datagram%s dropped due to upcall socket overflow\n",
mrtstat.mrts_upq_sockfull, plural(mrtstat.mrts_upq_sockfull));
printf("\t%lu datagram%s cleaned up by the cache\n",
mrtstat.mrts_cache_cleanups, plural(mrtstat.mrts_cache_cleanups));
printf("\t%lu datagram%s dropped selectively by ratelimiter\n",
mrtstat.mrts_drop_sel, plural(mrtstat.mrts_drop_sel));
printf("\t%lu datagram%s dropped - bucket Q overflow\n",
mrtstat.mrts_q_overflow, plural(mrtstat.mrts_q_overflow));
printf("\t%lu datagram%s dropped - larger than bkt size\n",
mrtstat.mrts_pkt2large, plural(mrtstat.mrts_pkt2large));
}