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4f7ac59b50
use that instead of trying to use errno, in order to produce a sensible error message. MFC after: 1 day
360 lines
11 KiB
C
360 lines
11 KiB
C
/*
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California.
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* Copyright (c) 2005 Robert N. M. Watson
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* 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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#if 0
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#ifndef lint
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static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93";
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#endif /* not lint */
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#endif
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/mbuf.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <memstat.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "netstat.h"
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#define YES 1
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typedef int bool;
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static struct mbtypenames {
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short mt_type;
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const char *mt_name;
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} mbtypenames[] = {
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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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#ifdef MT_SOCKET
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{ MT_SOCKET, "socket structures" }, /* XXX */
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#endif
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#ifdef MT_PCB
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{ MT_PCB, "protocol control blocks" }, /* XXX */
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#endif
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#ifdef MT_RTABLE
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{ MT_RTABLE, "routing table entries" }, /* XXX */
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#endif
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#ifdef MT_HTABLE
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{ MT_HTABLE, "IMP host table entries" }, /* XXX */
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#endif
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#ifdef MT_ATABLE
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{ MT_ATABLE, "address resolution tables" },
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#endif
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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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#ifdef MT_SOOPTS
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{ MT_SOOPTS, "socket options" },
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#endif
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#ifdef MT_RIGHTS
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{ MT_RIGHTS, "access rights" },
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#endif
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#ifdef MT_IFADDR
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{ MT_IFADDR, "interface addresses" }, /* XXX */
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#endif
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{ 0, 0 }
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};
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/*
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* Print mbuf statistics extracted from kmem.
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*/
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void
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mbpr_kmem(u_long mbaddr, u_long nmbcaddr, u_long nmbufaddr, u_long mbhiaddr,
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u_long clhiaddr, u_long mbloaddr, u_long clloaddr, u_long pgsaddr,
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u_long mbpaddr)
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{
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int i, nmbclusters;
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short nmbtypes;
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size_t mlen;
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long *mbtypes = NULL;
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struct mbstat *mbstat = NULL;
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struct mbtypenames *mp;
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bool *seen = NULL;
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mlen = sizeof *mbstat;
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if ((mbstat = malloc(mlen)) == NULL) {
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warn("malloc: cannot allocate memory for mbstat");
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goto err;
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}
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if (kread(mbaddr, (char *)mbstat, sizeof mbstat))
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goto err;
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if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int)))
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goto err;
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if (mbstat->m_mbufs < 0) mbstat->m_mbufs = 0; /* XXX */
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if (mbstat->m_mclusts < 0) mbstat->m_mclusts = 0; /* XXX */
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nmbtypes = mbstat->m_numtypes;
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if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) {
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warn("calloc: cannot allocate memory for mbtypes seen flag");
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goto err;
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}
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if ((mbtypes = calloc(nmbtypes, sizeof(long *))) == NULL) {
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warn("calloc: cannot allocate memory for mbtypes");
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goto err;
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}
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#undef MSIZE
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#define MSIZE (mbstat->m_msize)
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#undef MCLBYTES
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#define MCLBYTES (mbstat->m_mclbytes)
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printf("%lu mbufs in use\n", mbstat->m_mbufs);
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for (mp = mbtypenames; mp->mt_name; mp++) {
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if (mbtypes[mp->mt_type]) {
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seen[mp->mt_type] = YES;
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printf("\t %lu mbufs allocated to %s\n",
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mbtypes[mp->mt_type], mp->mt_name);
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}
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}
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for (i = 1; i < nmbtypes; i++) {
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if (!seen[i] && mbtypes[i])
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printf("\t %lu mbufs allocated to <mbuf type: %d>\n",
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mbtypes[i], i);
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}
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printf("%lu/%d mbuf clusters in use (current/max)\n",
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mbstat->m_mclusts, nmbclusters);
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printf("%lu KBytes allocated to network\n", (mbstat->m_mbufs * MSIZE +
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mbstat->m_mclusts * MCLBYTES) / 1024);
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printf("%lu requests for sfbufs denied\n", mbstat->sf_allocfail);
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printf("%lu requests for sfbufs delayed\n", mbstat->sf_allocwait);
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printf("%lu requests for I/O initiated by sendfile\n",
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mbstat->sf_iocnt);
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printf("%lu calls to protocol drain routines\n", mbstat->m_drain);
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err:
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if (mbtypes != NULL)
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free(mbtypes);
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if (seen != NULL)
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free(seen);
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if (mbstat != NULL)
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free(mbstat);
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}
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/*
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* If running on a live kernel, directly query the zone allocator for stats
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* from the four mbuf-related zones/types.
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*/
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static void
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mbpr_sysctl(void)
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{
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struct memory_type_list *mtlp;
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struct memory_type *mtp;
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u_int64_t mbuf_count, mbuf_bytes, mbuf_free, mbuf_failures, mbuf_size;
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u_int64_t cluster_count, cluster_bytes, cluster_limit, cluster_free;
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u_int64_t cluster_failures, cluster_size;
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u_int64_t packet_count, packet_bytes, packet_free, packet_failures;
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u_int64_t tag_count, tag_bytes;
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u_int64_t bytes_inuse, bytes_incache, bytes_total;
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int nsfbufs, nsfbufspeak, nsfbufsused;
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struct mbstat mbstat;
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size_t mlen;
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mtlp = memstat_mtl_alloc();
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if (mtlp == NULL) {
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warn("memstat_mtl_alloc");
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return;
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}
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/*
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* Use memstat_sysctl_all() because some mbuf-related memory is in
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* uma(9), and some malloc(9).
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*/
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if (memstat_sysctl_all(mtlp, 0) < 0) {
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warnx("memstat_sysctl_all: %s",
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memstat_strerror(memstat_mtl_geterror(mtlp)));
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goto out;
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}
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_MEM_NAME);
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if (mtp == NULL) {
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warnx("memstat_mtl_find: zone %s not found", MBUF_MEM_NAME);
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goto out;
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}
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mbuf_count = memstat_get_count(mtp);
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mbuf_bytes = memstat_get_bytes(mtp);
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mbuf_free = memstat_get_free(mtp);
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mbuf_failures = memstat_get_failures(mtp);
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mbuf_size = memstat_get_size(mtp);
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_PACKET_MEM_NAME);
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if (mtp == NULL) {
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warnx("memstat_mtl_find: zone %s not found",
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MBUF_PACKET_MEM_NAME);
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goto out;
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}
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packet_count = memstat_get_count(mtp);
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packet_bytes = memstat_get_bytes(mtp);
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packet_free = memstat_get_free(mtp);
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packet_failures = memstat_get_failures(mtp);
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_CLUSTER_MEM_NAME);
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if (mtp == NULL) {
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warnx("memstat_mtl_find: zone %s not found",
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MBUF_CLUSTER_MEM_NAME);
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goto out;
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}
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cluster_count = memstat_get_count(mtp);
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cluster_bytes = memstat_get_bytes(mtp);
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cluster_limit = memstat_get_countlimit(mtp);
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cluster_free = memstat_get_free(mtp);
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cluster_failures = memstat_get_failures(mtp);
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cluster_size = memstat_get_size(mtp);
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_MALLOC, MBUF_TAG_MEM_NAME);
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if (mtp == NULL) {
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warnx("memstat_mtl_find: malloc type %s not found",
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MBUF_TAG_MEM_NAME);
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goto out;
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}
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tag_count = memstat_get_count(mtp);
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tag_bytes = memstat_get_bytes(mtp);
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printf("%llu/%llu/%llu mbufs in use (current/cache/total)\n",
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mbuf_count + packet_count, mbuf_free + packet_free,
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mbuf_count + packet_count + mbuf_free + packet_free);
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printf("%llu/%llu/%llu/%llu mbuf clusters in use "
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"(current/cache/total/max)\n",
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cluster_count - packet_free, cluster_free + packet_free,
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cluster_count + cluster_free, cluster_limit);
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#if 0
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printf("%llu mbuf tags in use\n", tag_count);
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#endif
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mlen = sizeof(nsfbufs);
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if (!sysctlbyname("kern.ipc.nsfbufs", &nsfbufs, &mlen, NULL, 0) &&
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!sysctlbyname("kern.ipc.nsfbufsused", &nsfbufsused, &mlen, NULL,
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0) &&
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!sysctlbyname("kern.ipc.nsfbufspeak", &nsfbufspeak, &mlen, NULL,
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0)) {
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printf("%d/%d/%d sfbufs in use (current/peak/max)\n",
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nsfbufsused, nsfbufspeak, nsfbufs);
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}
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/*-
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* Calculate in-use bytes as:
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* - straight mbuf memory
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* - mbuf memory in packets
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* - the clusters attached to packets
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* - and the rest of the non-packet-attached clusters.
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* - m_tag memory
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* This avoids counting the clusters attached to packets in the cache.
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* This currently excludes sf_buf space.
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*/
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bytes_inuse =
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mbuf_bytes + /* straight mbuf memory */
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packet_bytes + /* mbufs in packets */
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(packet_count * cluster_size) + /* clusters in packets */
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/* other clusters */
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((cluster_count - packet_count - packet_free) * cluster_size) +
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tag_bytes;
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/*
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* Calculate in-cache bytes as:
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* - cached straught mbufs
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* - cached packet mbufs
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* - cached packet clusters
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* - cached straight clusters
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* This currently excludes sf_buf space.
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*/
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bytes_incache =
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(mbuf_free * mbuf_size) + /* straight free mbufs */
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(packet_free * mbuf_size) + /* mbufs in free packets */
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(packet_free * cluster_size) + /* clusters in free packets */
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(cluster_free * cluster_size); /* free clusters */
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/*
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* Total is bytes in use + bytes in cache. This doesn't take into
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* account various other misc data structures, overhead, etc, but
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* gives the user something useful despite that.
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*/
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bytes_total = bytes_inuse + bytes_incache;
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printf("%lluK/%lluK/%lluK bytes allocated to network "
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"(current/cache/total)\n", bytes_inuse / 1024,
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bytes_incache / 1024, bytes_total / 1024);
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#if 0
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printf("%llu/%llu/%llu requests for mbufs denied (mbufs/clusters/"
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"mbuf+clusters)\n", mbuf_failures, cluster_failures,
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packet_failures);
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#endif
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mlen = sizeof(mbstat);
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if (!sysctlbyname("kern.ipc.mbstat", &mbstat, &mlen, NULL, 0)) {
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printf("%lu requests for sfbufs denied\n",
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mbstat.sf_allocfail);
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printf("%lu requests for sfbufs delayed\n",
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mbstat.sf_allocwait);
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printf("%lu requests for I/O initiated by sendfile\n",
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mbstat.sf_iocnt);
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printf("%lu calls to protocol drain routines\n",
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mbstat.m_drain);
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}
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out:
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memstat_mtl_free(mtlp);
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}
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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 mbtaddr __unused, u_long nmbcaddr, u_long nmbufaddr,
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u_long mbhiaddr, u_long clhiaddr, u_long mbloaddr, u_long clloaddr,
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u_long cpusaddr __unused, u_long pgsaddr, u_long mbpaddr)
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{
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if (mbaddr != 0)
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mbpr_kmem(mbaddr, nmbcaddr, nmbufaddr, mbhiaddr, clhiaddr,
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mbloaddr, clloaddr, pgsaddr, mbpaddr);
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else
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mbpr_sysctl();
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}
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