OpenBSD-4.6/usr.bin/netstat/mroute.c
/* $OpenBSD: mroute.c,v 1.18 2009/02/07 15:06:04 chl Exp $ */
/* $NetBSD: mroute.c,v 1.10 1996/05/11 13:51:27 mycroft Exp $ */
/*
* Copyright (c) 1989 Stephen Deering
* 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
*/
/*
* 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 <sys/sysctl.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 <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include "netstat.h"
static void print_bw_meter(struct bw_meter *bw_meter, int *banner_printed);
static char *
pktscale(u_long n)
{
static char buf[8];
char t;
if (n < 1024)
t = ' ';
else if (n < 1024 * 1024) {
t = 'k';
n /= 1024;
} else {
t = 'm';
n /= 1048576;
}
snprintf(buf, sizeof buf, "%lu%c", n, t);
return (buf);
}
void
mroutepr(u_long mfchashtbladdr, u_long mfchashaddr, u_long vifaddr)
{
u_int mrtproto;
LIST_HEAD(, mfc) *mfchashtbl;
u_long mfchash;
struct vif viftable[MAXVIFS], *v;
struct mfc *mfcp, mfc;
vifi_t vifi;
int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
size_t len = sizeof(int);
int i, banner_printed = 0, saved_nflag, numvifs = 0;
int nmfc; /* No. of cache entries */
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
&mrtproto, &len, NULL, 0) == -1) {
if (errno != ENOPROTOOPT)
warn("mroute");
return;
}
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_nflag = nflag;
nflag = 1;
kread(vifaddr, &viftable, sizeof(viftable));
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));
printf(" %-15.15s %6lu %7lu\n", (v->v_flags & VIFF_TUNNEL) ?
routename4(v->v_rmt_addr.s_addr) : "",
v->v_pkt_in, v->v_pkt_out);
}
if (!banner_printed)
printf("Virtual Interface Table is empty\n");
kread(mfchashtbladdr, &mfchashtbl, sizeof(mfchashtbl));
kread(mfchashaddr, &mfchash, sizeof(mfchash));
banner_printed = 0;
nmfc = 0;
if (mfchashtbl != 0)
for (i = 0; i <= mfchash; ++i) {
kread((u_long)&mfchashtbl[i], &mfcp, sizeof(mfcp));
for (; mfcp != 0; mfcp = LIST_NEXT(&mfc, mfc_hash)) {
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, &mfc, sizeof(mfc));
printf(" %3u %-15.15s",
i, routename4(mfc.mfc_origin.s_addr));
printf(" %-15.15s %7s %3u ",
routename4(mfc.mfc_mcastgrp.s_addr),
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,
&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("Multicast Forwarding Cache is empty\n");
else
printf("\nTotal no. of entries in cache: %d\n", nmfc);
printf("\n");
nflag = saved_nflag;
}
static void
print_bw_meter(struct bw_meter *bw_meter, int *banner_printed)
{
char s0[256], 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",
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", bw_meter->bm_measured.b_bytes);
else
snprintf(s2, sizeof s2, "?");
snprintf(s0, sizeof s0, "%lu.%lu|%s|%s",
bw_meter->bm_start_time.tv_sec,
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",
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",
bw_meter->bm_threshold.b_bytes);
else
snprintf(s2, sizeof s2, "?");
snprintf(s0, sizeof s0, "%lu.%lu|%s|%s",
bw_meter->bm_threshold.b_time.tv_sec,
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, "%lu.%lu",
delta.tv_sec, delta.tv_usec);
} else {
/* Negative time */
timersub(&now, &end, &delta);
snprintf(s3, sizeof s3, "-%lu.%lu",
delta.tv_sec, delta.tv_usec);
}
printf(" %s", s3);
printf("\n");
}
void
mrt_stats(void)
{
u_int mrtproto;
struct mrtstat mrtstat;
int mib[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTPROTO };
int mib2[] = { CTL_NET, AF_INET, IPPROTO_IP, IPCTL_MRTSTATS };
size_t len = sizeof(int);
if (sysctl(mib, sizeof(mib) / sizeof(mib[0]),
&mrtproto, &len, NULL, 0) == -1) {
if (errno != ENOPROTOOPT)
warn("mroute");
return;
}
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;
}
len = sizeof(mrtstat);
if (sysctl(mib2, sizeof(mib2) / sizeof(mib2[0]),
&mrtstat, &len, NULL, 0) == -1) {
if (errno != ENOPROTOOPT)
warn("mroute");
return;
}
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));
}