/usr.bin/netstat/mbuf.c
https://bitbucket.org/freebsd/freebsd-head/ · C · 313 lines · 220 code · 28 blank · 65 comment · 28 complexity · 3e522ec694a15586f7899edabe4d0765 MD5 · raw file
- /*-
- * Copyright (c) 1983, 1988, 1993
- * The Regents of the University of California.
- * Copyright (c) 2005 Robert N. M. Watson
- * 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.
- */
- #if 0
- #ifndef lint
- static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
- #endif /* not lint */
- #endif
- #include <sys/cdefs.h>
- __FBSDID("$FreeBSD$");
- #include <sys/param.h>
- #include <sys/mbuf.h>
- #include <sys/protosw.h>
- #include <sys/socket.h>
- #include <sys/socketvar.h>
- #include <sys/sysctl.h>
- #include <err.h>
- #include <kvm.h>
- #include <memstat.h>
- #include <stdint.h>
- #include <stdio.h>
- #include <stdlib.h>
- #include <string.h>
- #include "netstat.h"
- /*
- * Print mbuf statistics.
- */
- void
- mbpr(void *kvmd, u_long mbaddr)
- {
- struct memory_type_list *mtlp;
- struct memory_type *mtp;
- uintmax_t mbuf_count, mbuf_bytes, mbuf_free, mbuf_failures, mbuf_size;
- uintmax_t cluster_count, cluster_bytes, cluster_limit, cluster_free;
- uintmax_t cluster_failures, cluster_size;
- uintmax_t packet_count, packet_bytes, packet_free, packet_failures;
- uintmax_t tag_count, tag_bytes;
- uintmax_t jumbop_count, jumbop_bytes, jumbop_limit, jumbop_free;
- uintmax_t jumbop_failures, jumbop_size;
- uintmax_t jumbo9_count, jumbo9_bytes, jumbo9_limit, jumbo9_free;
- uintmax_t jumbo9_failures, jumbo9_size;
- uintmax_t jumbo16_count, jumbo16_bytes, jumbo16_limit, jumbo16_free;
- uintmax_t jumbo16_failures, jumbo16_size;
- uintmax_t bytes_inuse, bytes_incache, bytes_total;
- int nsfbufs, nsfbufspeak, nsfbufsused;
- struct mbstat mbstat;
- size_t mlen;
- int error;
- mtlp = memstat_mtl_alloc();
- if (mtlp == NULL) {
- warn("memstat_mtl_alloc");
- return;
- }
- /*
- * Use memstat_*_all() because some mbuf-related memory is in uma(9),
- * and some malloc(9).
- */
- if (live) {
- if (memstat_sysctl_all(mtlp, 0) < 0) {
- warnx("memstat_sysctl_all: %s",
- memstat_strerror(memstat_mtl_geterror(mtlp)));
- goto out;
- }
- } else {
- if (memstat_kvm_all(mtlp, kvmd) < 0) {
- error = memstat_mtl_geterror(mtlp);
- if (error == MEMSTAT_ERROR_KVM)
- warnx("memstat_kvm_all: %s",
- kvm_geterr(kvmd));
- else
- warnx("memstat_kvm_all: %s",
- memstat_strerror(error));
- goto out;
- }
- }
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found", MBUF_MEM_NAME);
- goto out;
- }
- mbuf_count = memstat_get_count(mtp);
- mbuf_bytes = memstat_get_bytes(mtp);
- mbuf_free = memstat_get_free(mtp);
- mbuf_failures = memstat_get_failures(mtp);
- mbuf_size = memstat_get_size(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_PACKET_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found",
- MBUF_PACKET_MEM_NAME);
- goto out;
- }
- packet_count = memstat_get_count(mtp);
- packet_bytes = memstat_get_bytes(mtp);
- packet_free = memstat_get_free(mtp);
- packet_failures = memstat_get_failures(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_CLUSTER_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found",
- MBUF_CLUSTER_MEM_NAME);
- goto out;
- }
- cluster_count = memstat_get_count(mtp);
- cluster_bytes = memstat_get_bytes(mtp);
- cluster_limit = memstat_get_countlimit(mtp);
- cluster_free = memstat_get_free(mtp);
- cluster_failures = memstat_get_failures(mtp);
- cluster_size = memstat_get_size(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_MALLOC, MBUF_TAG_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: malloc type %s not found",
- MBUF_TAG_MEM_NAME);
- goto out;
- }
- tag_count = memstat_get_count(mtp);
- tag_bytes = memstat_get_bytes(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBOP_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found",
- MBUF_JUMBOP_MEM_NAME);
- goto out;
- }
- jumbop_count = memstat_get_count(mtp);
- jumbop_bytes = memstat_get_bytes(mtp);
- jumbop_limit = memstat_get_countlimit(mtp);
- jumbop_free = memstat_get_free(mtp);
- jumbop_failures = memstat_get_failures(mtp);
- jumbop_size = memstat_get_size(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBO9_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found",
- MBUF_JUMBO9_MEM_NAME);
- goto out;
- }
- jumbo9_count = memstat_get_count(mtp);
- jumbo9_bytes = memstat_get_bytes(mtp);
- jumbo9_limit = memstat_get_countlimit(mtp);
- jumbo9_free = memstat_get_free(mtp);
- jumbo9_failures = memstat_get_failures(mtp);
- jumbo9_size = memstat_get_size(mtp);
- mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBO16_MEM_NAME);
- if (mtp == NULL) {
- warnx("memstat_mtl_find: zone %s not found",
- MBUF_JUMBO16_MEM_NAME);
- goto out;
- }
- jumbo16_count = memstat_get_count(mtp);
- jumbo16_bytes = memstat_get_bytes(mtp);
- jumbo16_limit = memstat_get_countlimit(mtp);
- jumbo16_free = memstat_get_free(mtp);
- jumbo16_failures = memstat_get_failures(mtp);
- jumbo16_size = memstat_get_size(mtp);
- printf("%ju/%ju/%ju mbufs in use (current/cache/total)\n",
- mbuf_count + packet_count, mbuf_free + packet_free,
- mbuf_count + packet_count + mbuf_free + packet_free);
- printf("%ju/%ju/%ju/%ju mbuf clusters in use "
- "(current/cache/total/max)\n",
- cluster_count - packet_free, cluster_free + packet_free,
- cluster_count + cluster_free, cluster_limit);
- printf("%ju/%ju mbuf+clusters out of packet secondary zone in use "
- "(current/cache)\n",
- packet_count, packet_free);
- printf("%ju/%ju/%ju/%ju %juk (page size) jumbo clusters in use "
- "(current/cache/total/max)\n",
- jumbop_count, jumbop_free, jumbop_count + jumbop_free,
- jumbop_limit, jumbop_size / 1024);
- printf("%ju/%ju/%ju/%ju 9k jumbo clusters in use "
- "(current/cache/total/max)\n",
- jumbo9_count, jumbo9_free, jumbo9_count + jumbo9_free,
- jumbo9_limit);
- printf("%ju/%ju/%ju/%ju 16k jumbo clusters in use "
- "(current/cache/total/max)\n",
- jumbo16_count, jumbo16_free, jumbo16_count + jumbo16_free,
- jumbo16_limit);
- #if 0
- printf("%ju mbuf tags in use\n", tag_count);
- #endif
- /*-
- * Calculate in-use bytes as:
- * - straight mbuf memory
- * - mbuf memory in packets
- * - the clusters attached to packets
- * - and the rest of the non-packet-attached clusters.
- * - m_tag memory
- * This avoids counting the clusters attached to packets in the cache.
- * This currently excludes sf_buf space.
- */
- bytes_inuse =
- mbuf_bytes + /* straight mbuf memory */
- packet_bytes + /* mbufs in packets */
- (packet_count * cluster_size) + /* clusters in packets */
- /* other clusters */
- ((cluster_count - packet_count - packet_free) * cluster_size) +
- tag_bytes +
- (jumbop_count * jumbop_size) + /* jumbo clusters */
- (jumbo9_count * jumbo9_size) +
- (jumbo16_count * jumbo16_size);
- /*
- * Calculate in-cache bytes as:
- * - cached straught mbufs
- * - cached packet mbufs
- * - cached packet clusters
- * - cached straight clusters
- * This currently excludes sf_buf space.
- */
- bytes_incache =
- (mbuf_free * mbuf_size) + /* straight free mbufs */
- (packet_free * mbuf_size) + /* mbufs in free packets */
- (packet_free * cluster_size) + /* clusters in free packets */
- (cluster_free * cluster_size) + /* free clusters */
- (jumbop_free * jumbop_size) + /* jumbo clusters */
- (jumbo9_free * jumbo9_size) +
- (jumbo16_free * jumbo16_size);
- /*
- * Total is bytes in use + bytes in cache. This doesn't take into
- * account various other misc data structures, overhead, etc, but
- * gives the user something useful despite that.
- */
- bytes_total = bytes_inuse + bytes_incache;
- printf("%juK/%juK/%juK bytes allocated to network "
- "(current/cache/total)\n", bytes_inuse / 1024,
- bytes_incache / 1024, bytes_total / 1024);
- printf("%ju/%ju/%ju requests for mbufs denied (mbufs/clusters/"
- "mbuf+clusters)\n", mbuf_failures, cluster_failures,
- packet_failures);
- printf("%ju/%ju/%ju requests for jumbo clusters denied "
- "(%juk/9k/16k)\n", jumbop_failures, jumbo9_failures,
- jumbo16_failures, jumbop_size / 1024);
- if (live) {
- mlen = sizeof(nsfbufs);
- if (!sysctlbyname("kern.ipc.nsfbufs", &nsfbufs, &mlen, NULL,
- 0) &&
- !sysctlbyname("kern.ipc.nsfbufsused", &nsfbufsused,
- &mlen, NULL, 0) &&
- !sysctlbyname("kern.ipc.nsfbufspeak", &nsfbufspeak,
- &mlen, NULL, 0))
- printf("%d/%d/%d sfbufs in use (current/peak/max)\n",
- nsfbufsused, nsfbufspeak, nsfbufs);
- mlen = sizeof(mbstat);
- if (sysctlbyname("kern.ipc.mbstat", &mbstat, &mlen, NULL, 0)) {
- warn("kern.ipc.mbstat");
- goto out;
- }
- } else {
- if (kread(mbaddr, (char *)&mbstat, sizeof mbstat) != 0)
- goto out;
- }
- printf("%lu requests for sfbufs denied\n", mbstat.sf_allocfail);
- printf("%lu requests for sfbufs delayed\n", mbstat.sf_allocwait);
- printf("%lu requests for I/O initiated by sendfile\n",
- mbstat.sf_iocnt);
- printf("%lu calls to protocol drain routines\n", mbstat.m_drain);
- out:
- memstat_mtl_free(mtlp);
- }