freebsd-nq/usr.bin/netstat/mbuf.c
Bosko Milekic f70f5dd367 - Fix space allocation for mbstat structure
- Make sure to try hw.ncpu if kern.smp.cpus doesn't exist (i.e. on UP) to
  get number of CPUs.
2001-06-23 17:04:17 +00:00

320 lines
9.6 KiB
C

/*
* 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. 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
#if 0
static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
#endif
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/param.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "netstat.h"
#define YES 1
typedef int bool;
/* XXX: mbtypes stats temporarily disactivated. */
#if 0
static struct mbtypenames {
int mt_type;
char *mt_name;
} mbtypenames[] = {
{ MT_DATA, "data" },
{ MT_OOBDATA, "oob data" },
{ MT_CONTROL, "ancillary data" },
{ MT_HEADER, "packet headers" },
#ifdef MT_SOCKET
{ MT_SOCKET, "socket structures" }, /* XXX */
#endif
#ifdef MT_PCB
{ MT_PCB, "protocol control blocks" }, /* XXX */
#endif
#ifdef MT_RTABLE
{ MT_RTABLE, "routing table entries" }, /* XXX */
#endif
#ifdef MT_HTABLE
{ MT_HTABLE, "IMP host table entries" }, /* XXX */
#endif
#ifdef MT_ATABLE
{ MT_ATABLE, "address resolution tables" },
#endif
{ MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
{ MT_SONAME, "socket names and addresses" },
#ifdef MT_SOOPTS
{ MT_SOOPTS, "socket options" },
#endif
#ifdef MT_RIGHTS
{ MT_RIGHTS, "access rights" },
#endif
#ifdef MT_IFADDR
{ MT_IFADDR, "interface addresses" }, /* XXX */
#endif
{ 0, 0 }
};
#endif /* 0 */
/*
* Print mbuf statistics.
*/
void
mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr,
u_long mblimaddr, u_long cllimaddr, u_long cpusaddr, u_long pgsaddr,
u_long mbpaddr)
{
int i, nmbufs, nmbclusters, ncpu, page_size, num_objs;
u_int mbuf_limit, clust_limit;
u_long totspace, totnum, totfree;
size_t mlen;
struct mbstat *mbstat = NULL;
struct mbpstat **mbpstat = NULL;
/* XXX: mbtypes stats temporarily disabled. */
#if 0
int nmbtypes;
size_t mbtypeslen;
struct mbtypenames *mp;
u_long *mbtypes = NULL;
bool *seen = NULL;
/*
* XXX
* We can't kread() mbtypeslen from a core image so we'll
* bogusly assume it's the same as in the running kernel.
*/
if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) {
warn("sysctl: retrieving mbtypes length");
goto err;
}
if ((mbtypes = malloc(mbtypeslen)) == NULL) {
warn("malloc: %lu bytes for mbtypes", (u_long)mbtypeslen);
goto err;
}
nmbtypes = mbtypeslen / sizeof(*mbtypes);
if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) {
warn("calloc");
goto err;
}
#endif
mlen = sizeof *mbstat;
if ((mbstat = malloc(mlen)) == NULL) {
warn("malloc: cannot allocate memory for mbstat");
goto err;
}
/*
* XXX: Unfortunately, for the time being, we have to fetch
* the total length of the per-CPU stats area via sysctl
* (regardless of whether we're looking at a core or not.
*/
if (sysctlbyname("kern.ipc.mb_statpcpu", NULL, &mlen, NULL, 0) < 0) {
warn("sysctl: retrieving mb_statpcpu len");
goto err;
}
num_objs = (int)(mlen / sizeof(struct mbpstat));
if ((mbpstat = calloc(num_objs, sizeof(struct mbpstat *))) == NULL) {
warn("calloc: cannot allocate memory for mbpstats pointers");
goto err;
}
if ((mbpstat[0] = calloc(num_objs, sizeof(struct mbpstat))) == NULL) {
warn("calloc: cannot allocate memory for mbpstats");
goto err;
}
if (mbaddr) {
if (kread(mbpaddr, (char *)mbpstat[0], mlen))
goto err;
if (kread(mbaddr, (char *)mbstat, sizeof mbstat))
goto err;
#if 0
if (kread(mbtaddr, (char *)mbtypes, mbtypeslen))
goto err;
#endif
if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int)))
goto err;
if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int)))
goto err;
if (kread(mblimaddr, (char *)&mbuf_limit, sizeof(u_int)))
goto err;
if (kread(cllimaddr, (char *)&clust_limit, sizeof(u_int)))
goto err;
if (kread(cpusaddr, (char *)&ncpu, sizeof(int)))
goto err;
if (kread(pgsaddr, (char *)&page_size, sizeof(int)))
goto err;
} else {
if (sysctlbyname("kern.ipc.mb_statpcpu", mbpstat[0], &mlen,
NULL, 0) < 0) {
warn("sysctl: retrieving mb_statpcpu");
goto err;
}
mlen = sizeof *mbstat;
if (sysctlbyname("kern.ipc.mbstat", mbstat, &mlen, NULL, 0)
< 0) {
warn("sysctl: retrieving mbstat");
goto err;
}
#if 0
if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL,
0) < 0) {
warn("sysctl: retrieving mbtypes");
goto err;
}
#endif
mlen = sizeof(int);
if (sysctlbyname("kern.ipc.nmbclusters", &nmbclusters, &mlen,
NULL, 0) < 0) {
warn("sysctl: retrieving nmbclusters");
goto err;
}
mlen = sizeof(int);
if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &mlen, NULL, 0)
< 0) {
warn("sysctl: retrieving nmbufs");
goto err;
}
mlen = sizeof(u_int);
if (sysctlbyname("kern.ipc.mbuf_limit", &mbuf_limit, &mlen,
NULL, 0) < 0) {
warn("sysctl: retrieving mbuf_limit");
goto err;
}
mlen = sizeof(u_int);
if (sysctlbyname("kern.ipc.clust_limit", &clust_limit, &mlen,
NULL, 0) < 0) {
warn("sysctl: retrieving clust_limit");
goto err;
}
mlen = sizeof(int);
if (sysctlbyname("kern.smp.cpus", &ncpu, &mlen, NULL, 0) < 0 &&
sysctlbyname("hw.ncpu", &ncpu, &mlen, NULL, 0) < 0) {
warn("sysctl: retrieving number of cpus");
goto err;
}
mlen = sizeof(int);
if (sysctlbyname("hw.pagesize", &page_size, &mlen, NULL, 0)
< 0) {
warn("sysctl: retrieving hw.pagesize");
goto err;
}
}
for (i = 0; i < num_objs; i++)
mbpstat[i] = mbpstat[0] + i;
#undef MSIZE
#define MSIZE (mbstat->m_msize)
#undef MCLBYTES
#define MCLBYTES (mbstat->m_mclbytes)
#define MBPERPG (page_size / MSIZE)
#define CLPERPG (page_size / MCLBYTES)
#define GENLST (num_objs - 1)
printf("mbuf usage:\n");
printf("\tGEN list:\t%lu/%lu (in use/in pool)\n",
(mbpstat[GENLST]->mb_mbpgs * MBPERPG - mbpstat[GENLST]->mb_mbfree),
(mbpstat[GENLST]->mb_mbpgs * MBPERPG));
totnum = mbpstat[GENLST]->mb_mbpgs * MBPERPG;
totfree = mbpstat[GENLST]->mb_mbfree;
totspace = mbpstat[GENLST]->mb_mbpgs * page_size;
for (i = 0; i < ncpu; i++) {
printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i,
(mbpstat[i]->mb_mbpgs * MBPERPG - mbpstat[i]->mb_mbfree),
(mbpstat[i]->mb_mbpgs * MBPERPG));
totspace += mbpstat[i]->mb_mbpgs * page_size;
totnum += mbpstat[i]->mb_mbpgs * MBPERPG;
totfree += mbpstat[i]->mb_mbfree;
}
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", (totnum - totfree),
totnum);
printf("\tMaximum number allowed on each CPU list: %d\n", mbuf_limit);
printf("\tMaximum possible: %d\n", nmbufs);
printf("\t%lu%% of mbuf map consumed\n", ((totspace * 100) / (nmbufs
* MSIZE)));
printf("mbuf cluster usage:\n");
printf("\tGEN list:\t%lu/%lu (in use/in pool)\n",
(mbpstat[GENLST]->mb_clpgs * CLPERPG - mbpstat[GENLST]->mb_clfree),
(mbpstat[GENLST]->mb_clpgs * CLPERPG));
totnum = mbpstat[GENLST]->mb_clpgs * CLPERPG;
totfree = mbpstat[GENLST]->mb_clfree;
totspace = mbpstat[GENLST]->mb_clpgs * page_size;
for (i = 0; i < ncpu; i++) {
printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i,
(mbpstat[i]->mb_clpgs * CLPERPG - mbpstat[i]->mb_clfree),
(mbpstat[i]->mb_clpgs * CLPERPG));
totspace += mbpstat[i]->mb_clpgs * page_size;
totnum += mbpstat[i]->mb_clpgs * CLPERPG;
totfree += mbpstat[i]->mb_clfree;
}
printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", (totnum - totfree),
totnum);
printf("\tMaximum number allowed on each CPU list: %d\n", clust_limit);
printf("\tMaximum possible: %d\n", nmbclusters);
printf("\t%lu%% of cluster map consumed\n", ((totspace * 100) /
(nmbclusters * MCLBYTES)));
printf("%lu requests for memory denied\n", mbstat->m_drops);
printf("%lu requests for memory delayed\n", mbstat->m_wait);
printf("%lu calls to protocol drain routines\n", mbstat->m_drain);
err:
#if 0
if (mbtypes != NULL)
free(mbtypes);
if (seen != NULL)
free(seen);
#endif
if (mbstat != NULL)
free(mbstat);
if (mbpstat != NULL) {
if (mbpstat[0] != NULL)
free(mbpstat[0]);
free(mbpstat);
}
return;
}