274 lines
7.8 KiB
C
274 lines
7.8 KiB
C
/* $NetBSD: mbuf.c,v 1.36 2024/02/24 09:53:26 mlelstv Exp $ */
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/*
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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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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#include <sys/cdefs.h>
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93";
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#else
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__RCSID("$NetBSD: mbuf.c,v 1.36 2024/02/24 09:53:26 mlelstv Exp $");
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#endif
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#endif /* not lint */
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#define __POOL_EXPOSE
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#include <sys/param.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/mbuf.h>
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#include <sys/pool.h>
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#include <sys/sysctl.h>
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#include <stdio.h>
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#include <kvm.h>
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#include <stdlib.h>
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#include <limits.h>
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#include <errno.h>
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#include <err.h>
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#include "netstat.h"
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#include "prog_ops.h"
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#define YES 1
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struct mbstat mbstat;
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struct pool mbpool, mclpool;
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struct pool_allocator mbpa, mclpa;
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static struct mbtypes {
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int mt_type;
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const char *mt_name;
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} mbtypes[] = {
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{ MT_DATA, "data" },
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{ MT_OOBDATA, "oob data" },
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{ MT_CONTROL, "ancillary data" },
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{ MT_HEADER, "packet headers" },
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{ MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
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{ MT_SONAME, "socket names and addresses" },
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{ MT_SOOPTS, "socket options" },
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{ 0, 0 }
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};
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const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
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bool seen[256]; /* "have we seen this type yet?" */
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int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS };
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int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS };
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/*
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* Print mbuf statistics.
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*/
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void
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mbpr(u_long mbaddr, u_long msizeaddr, u_long mclbaddr, u_long mbpooladdr,
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u_long mclpooladdr)
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{
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u_long totmem, totused, totpct;
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u_int totmbufs;
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int i, lines;
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struct mbtypes *mp;
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size_t len;
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void *data;
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struct mowner_user *mo;
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int mclbytes, msize;
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if (nmbtypes != 256) {
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fprintf(stderr,
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"%s: unexpected change to mbstat; check source\n",
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getprogname());
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return;
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}
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if (use_sysctl) {
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size_t mbstatlen = sizeof(mbstat);
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if (prog_sysctl(mbstats_ctl,
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sizeof(mbstats_ctl) / sizeof(mbstats_ctl[0]),
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&mbstat, &mbstatlen, NULL, 0) < 0) {
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warn("mbstat: sysctl failed");
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return;
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}
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goto printit;
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}
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if (mbaddr == 0) {
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fprintf(stderr, "%s: mbstat: symbol not in namelist\n",
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getprogname());
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return;
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}
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/*XXX*/
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if (msizeaddr != 0)
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kread(msizeaddr, (char *)&msize, sizeof (msize));
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else
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msize = MSIZE;
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if (mclbaddr != 0)
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kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes));
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else
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mclbytes = MCLBYTES;
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/*XXX*/
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if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
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return;
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if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool)))
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return;
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if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool)))
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return;
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mbpooladdr = (u_long) mbpool.pr_alloc;
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mclpooladdr = (u_long) mclpool.pr_alloc;
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if (kread(mbpooladdr, (char *)&mbpa, sizeof (mbpa)))
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return;
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if (kread(mclpooladdr, (char *)&mclpa, sizeof (mclpa)))
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return;
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printit:
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totmbufs = 0;
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for (mp = mbtypes; mp->mt_name; mp++)
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totmbufs += mbstat.m_mtypes[mp->mt_type];
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printf("%u mbufs in use:\n", totmbufs);
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for (mp = mbtypes; mp->mt_name; mp++)
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if (mbstat.m_mtypes[mp->mt_type]) {
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seen[mp->mt_type] = YES;
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printf("\t%u mbufs allocated to %s\n",
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mbstat.m_mtypes[mp->mt_type], mp->mt_name);
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}
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seen[MT_FREE] = YES;
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for (i = 0; i < nmbtypes; i++)
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if (!seen[i] && mbstat.m_mtypes[i]) {
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printf("\t%u mbufs allocated to <mbuf type %d>\n",
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mbstat.m_mtypes[i], i);
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}
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if (use_sysctl) /* XXX */
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goto dump_drain;
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printf("%lu/%lu mapped pages in use\n",
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(u_long)(mclpool.pr_nget - mclpool.pr_nput),
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((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage));
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totmem = (mbpool.pr_npages << mbpa.pa_pageshift) +
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(mclpool.pr_npages << mclpa.pa_pageshift);
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totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size +
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(mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size;
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if (totmem == 0)
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totpct = 0;
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else if (totused < (ULONG_MAX / 100))
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totpct = (totused * 100)/totmem;
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else {
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u_long totmem1 = totmem / 100;
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u_long totused1 = totused / 100;
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totpct = (totused1 * 100) / totmem1;
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}
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printf("%lu Kbytes allocated to network (%lu%% in use)\n",
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totmem / 1024, totpct);
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dump_drain:
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printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
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if (sflag < 2)
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return;
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if (!use_sysctl)
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return;
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if (prog_sysctl(mowners_ctl,
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sizeof(mowners_ctl)/sizeof(mowners_ctl[0]),
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NULL, &len, NULL, 0) < 0) {
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if (errno == ENOENT)
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return;
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warn("mowners: sysctl test");
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return;
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}
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len += 10 * sizeof(*mo); /* add some slop */
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data = malloc(len);
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if (data == NULL) {
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warn("malloc(%lu)", (u_long)len);
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return;
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}
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if (prog_sysctl(mowners_ctl,
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sizeof(mowners_ctl)/sizeof(mowners_ctl[0]),
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data, &len, NULL, 0) < 0) {
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warn("mowners: sysctl get");
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free(data);
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return;
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}
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for (mo = (void *) data, lines = 0; len >= sizeof(*mo);
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len -= sizeof(*mo), mo++) {
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char buf[34];
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if (vflag == 1 &&
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mo->mo_counter[MOWNER_COUNTER_CLAIMS] == 0 &&
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mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 0 &&
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 0)
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continue;
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if (vflag == 0 &&
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mo->mo_counter[MOWNER_COUNTER_CLAIMS] ==
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mo->mo_counter[MOWNER_COUNTER_RELEASES] &&
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mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] ==
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mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES] &&
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] ==
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES])
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continue;
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snprintf(buf, sizeof(buf), "%16.16s %-13.16s",
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mo->mo_name, mo->mo_descr);
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if ((lines % 24) == 0 || lines > 24) {
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printf("%30s %-8s %10s %10s %10s\n",
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"", "", "small", "ext", "cluster");
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lines = 1;
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}
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printf("%30s %-8s %10lu %10lu %10lu\n",
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buf, "inuse",
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mo->mo_counter[MOWNER_COUNTER_CLAIMS] -
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mo->mo_counter[MOWNER_COUNTER_RELEASES],
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mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] -
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mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES],
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] -
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]);
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lines++;
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if (vflag) {
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printf("%30s %-8s %10lu %10lu %10lu\n",
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"", "claims",
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mo->mo_counter[MOWNER_COUNTER_CLAIMS],
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mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS],
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS]);
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printf("%30s %-8s %10lu %10lu %10lu\n",
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"", "releases",
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mo->mo_counter[MOWNER_COUNTER_RELEASES],
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mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES],
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mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]);
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lines += 2;
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}
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}
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free(data);
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}
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