usr/src/usr.bin/netstat/mbuf.c

/*
 * Copyright (c) 1983, 1988 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. 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.
 */

#ifndef lint
static char sccsid[] = "@(#)mbuf.c      5.10 (Berkeley) 1/30/91";
#endif /* not lint */

#include <stdio.h>
#include <sys/param.h>
#include <sys/mbuf.h>
#define YES     1
typedef int bool;

struct  mbstat mbstat;

static struct mbtypes {
        int     mt_type;
        char    *mt_name;
} mbtypes[] = {
        { MT_DATA,      "data" },
        { MT_OOBDATA,   "oob data" },
        { MT_CONTROL,   "ancillary data" },
        { MT_HEADER,    "packet headers" },
        { MT_SOCKET,    "socket structures" },                  /* XXX */
        { MT_PCB,       "protocol control blocks" },            /* XXX */
        { MT_RTABLE,    "routing table entries" },              /* XXX */
        { MT_HTABLE,    "IMP host table entries" },             /* XXX */
        { MT_ATABLE,    "address resolution tables" },
        { MT_FTABLE,    "fragment reassembly queue headers" },  /* XXX */
        { MT_SONAME,    "socket names and addresses" },
        { MT_SOOPTS,    "socket options" },
        { MT_RIGHTS,    "access rights" },
        { MT_IFADDR,    "interface addresses" },                /* XXX */
        { 0, 0 }
};

int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
bool seen[256];                 /* "have we seen this type yet?" */

/*
 * Print mbuf statistics.
 */
mbpr(mbaddr)
        off_t mbaddr;
{
        register int totmem, totfree, totmbufs;
        register int i;
        register struct mbtypes *mp;

        if (nmbtypes != 256) {
                fprintf(stderr, "unexpected change to mbstat; check source\n");
                return;
        }
        if (mbaddr == 0) {
                printf("mbstat: symbol not in namelist\n");
                return;
        }
        if (kvm_read(mbaddr, (char *)&mbstat, sizeof (mbstat))
                                                != sizeof (mbstat)) {
                printf("mbstat: bad read\n");
                return;
        }
        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);
                }
        printf("%u/%u mapped pages in use\n",
                mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
        totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
        totfree = mbstat.m_clfree * MCLBYTES;
        printf("%u Kbytes allocated to network (%d%% in use)\n",
                totmem / 1024, (totmem - totfree) * 100 / totmem);
        printf("%u requests for memory denied\n", mbstat.m_drops);
        printf("%u requests for memory delayed\n", mbstat.m_wait);
        printf("%u calls to protocol drain routines\n", mbstat.m_drain);
}