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Use sysctl to export multicast routing stats

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This commit is contained in:
Bill Fenner 2001-07-25 20:14:09 +00:00
parent 9a70151652
commit 1a8b27c035
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=80351
1 changed files with 13 additions and 5 deletions
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18
usr.bin/netstat/mroute.c
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@ -52,6 +52,7 @@ static const char rcsid[] =
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/protosw.h>
#include <sys/mbuf.h>
#include <sys/time.h>
@ -62,6 +63,7 @@ static const char rcsid[] =
#include <net/route.h>
#include <netinet/ip_mroute.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include "netstat.h"
@ -152,13 +154,19 @@ void
mrt_stats(u_long mstaddr)
{
struct mrtstat mrtstat;
size_t len = sizeof mrtstat;
if (mstaddr == 0) {
printf("No IPv4 multicast routing compiled into this system.\n");
return;
if (sysctlbyname("net.inet.ip.mrtstat", &mrtstat, &len,
NULL, 0) < 0) {
warn("sysctl: net.inet.ip.mrtstat");
/* Compatability with older kernels - candidate for removal */
if (mstaddr == 0) {
printf("No IPv4 multicast routing compiled into this system.\n");
return;
}
kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
}
kread(mstaddr, (char *)&mrtstat, sizeof(mrtstat));
printf("IPv4 multicast forwarding:\n");
printf(" %10lu multicast forwarding cache lookup%s\n",
mrtstat.mrts_mfc_lookups, plural(mrtstat.mrts_mfc_lookups));