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/* $NetBSD: mbuf.c,v 1.33 2015/07/28 19:46:42 christos Exp $ */
/*
* Copyright (c) 1983, 1988, 1993
* The Regents of the University of California. All rights reserved.
*
* 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.
*/
#include <sys/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
#else
__RCSID("$NetBSD: mbuf.c,v 1.33 2015/07/28 19:46:42 christos Exp $");
#endif
#endif /* not lint */
#define __POOL_EXPOSE
#include <sys/param.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/mbuf.h>
#include <sys/pool.h>
#include <sys/sysctl.h>
#include <stdio.h>
#include <kvm.h>
#include <stdlib.h>
#include <limits.h>
#include <errno.h>
#include <err.h>
#include "netstat.h"
#include "prog_ops.h"
#define YES 1
struct mbstat mbstat;
struct pool mbpool, mclpool;
struct pool_allocator mbpa, mclpa;
static struct mbtypes {
int mt_type;
const char *mt_name;
} mbtypes[] = {
{ MT_DATA, "data" },
{ MT_OOBDATA, "oob data" },
{ MT_CONTROL, "ancillary data" },
{ MT_HEADER, "packet headers" },
{ MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
{ MT_SONAME, "socket names and addresses" },
{ MT_SOOPTS, "socket options" },
{ 0, 0 }
};
const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
bool seen[256]; /* "have we seen this type yet?" */
int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS };
int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS };
/*
* Print mbuf statistics.
*/
void
mbpr(u_long mbaddr, u_long msizeaddr, u_long mclbaddr, u_long mbpooladdr,
u_long mclpooladdr)
{
u_long totmem, totused, totpct;
u_int totmbufs;
int i, lines;
struct mbtypes *mp;
size_t len;
void *data;
struct mowner_user *mo;
int mclbytes, msize;
if (nmbtypes != 256) {
fprintf(stderr,
"%s: unexpected change to mbstat; check source\n",
getprogname());
return;
}
if (use_sysctl) {
size_t mbstatlen = sizeof(mbstat);
if (prog_sysctl(mbstats_ctl,
sizeof(mbstats_ctl) / sizeof(mbstats_ctl[0]),
&mbstat, &mbstatlen, NULL, 0) < 0) {
warn("mbstat: sysctl failed");
return;
}
goto printit;
}
if (mbaddr == 0) {
fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
getprogname());
return;
}
/*XXX*/
if (msizeaddr != 0)
kread(msizeaddr, (char *)&msize, sizeof (msize));
else
msize = MSIZE;
if (mclbaddr != 0)
kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes));
else
mclbytes = MCLBYTES;
/*XXX*/
if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
return;
if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool)))
return;
if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool)))
return;
mbpooladdr = (u_long) mbpool.pr_alloc;
mclpooladdr = (u_long) mclpool.pr_alloc;
if (kread(mbpooladdr, (char *)&mbpa, sizeof (mbpa)))
return;
if (kread(mclpooladdr, (char *)&mclpa, sizeof (mclpa)))
return;
printit:
totmbufs = 0;
for (mp = mbtypes; mp->mt_name; mp++)
totmbufs += mbstat.m_mtypes[mp->mt_type];
printf("%u mbufs in use:\n", totmbufs);
for (mp = mbtypes; mp->mt_name; mp++)
if (mbstat.m_mtypes[mp->mt_type]) {
seen[mp->mt_type] = YES;
printf("\t%u mbufs allocated to %s\n",
mbstat.m_mtypes[mp->mt_type], mp->mt_name);
}
seen[MT_FREE] = YES;
for (i = 0; i < nmbtypes; i++)
if (!seen[i] && mbstat.m_mtypes[i]) {
printf("\t%u mbufs allocated to <mbuf type %d>\n",
mbstat.m_mtypes[i], i);
}
if (use_sysctl) /* XXX */
goto dump_drain;
printf("%lu/%lu mapped pages in use\n",
(u_long)(mclpool.pr_nget - mclpool.pr_nput),
((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage));
totmem = (mbpool.pr_npages << mbpa.pa_pageshift) +
(mclpool.pr_npages << mclpa.pa_pageshift);
totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size +
(mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size;
if (totmem == 0)
totpct = 0;
else if (totused < (ULONG_MAX/100))
totpct = (totused * 100)/totmem;
else {
u_long totmem1 = totmem/100;
u_long totused1 = totused/100;
totpct = (totused1 * 100)/totmem1;
}
printf("%lu Kbytes allocated to network (%lu%% in use)\n",
totmem / 1024, totpct);
dump_drain:
printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
if (sflag < 2)
return;
if (!use_sysctl)
return;
if (prog_sysctl(mowners_ctl,
sizeof(mowners_ctl)/sizeof(mowners_ctl[0]),
NULL, &len, NULL, 0) < 0) {
if (errno == ENOENT)
return;
warn("mowners: sysctl test");
return;
}
len += 10 * sizeof(*mo); /* add some slop */
data = malloc(len);
if (data == NULL) {
warn("malloc(%lu)", (u_long)len);
return;
}
if (prog_sysctl(mowners_ctl,
sizeof(mowners_ctl)/sizeof(mowners_ctl[0]),
data, &len, NULL, 0) < 0) {
warn("mowners: sysctl get");
free(data);
return;
}
for (mo = (void *) data, lines = 0; len >= sizeof(*mo);
len -= sizeof(*mo), mo++) {
char buf[32];
if (vflag == 1 &&
mo->mo_counter[MOWNER_COUNTER_CLAIMS] == 0 &&
mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 0 &&
mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 0)
continue;
if (vflag == 0 &&
mo->mo_counter[MOWNER_COUNTER_CLAIMS] ==
mo->mo_counter[MOWNER_COUNTER_RELEASES] &&
mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] ==
mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES] &&
mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] ==
mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES])
continue;
snprintf(buf, sizeof(buf), "%16s %-13s",
mo->mo_name, mo->mo_descr);
if ((lines % 24) == 0 || lines > 24) {
printf("%30s %-8s %10s %10s %10s\n",
"", "", "small", "ext", "cluster");
lines = 1;
}
printf("%30s %-8s %10lu %10lu %10lu\n",
buf, "inuse",
mo->mo_counter[MOWNER_COUNTER_CLAIMS] -
mo->mo_counter[MOWNER_COUNTER_RELEASES],
mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] -
mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES],
mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] -
mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]);
lines++;
if (vflag) {
printf("%30s %-8s %10lu %10lu %10lu\n",
"", "claims",
mo->mo_counter[MOWNER_COUNTER_CLAIMS],
mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS],
mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS]);
printf("%30s %-8s %10lu %10lu %10lu\n",
"", "releases",
mo->mo_counter[MOWNER_COUNTER_RELEASES],
mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES],
mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]);
lines += 2;
}
}
free(data);
}
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