feda1a4372
general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
314 lines
10 KiB
C
314 lines
10 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/socketvar.h>
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#include <sys/sysctl.h>
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#include <err.h>
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#include <kvm.h>
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#include <memstat.h>
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#include <stdint.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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/*
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* Print mbuf statistics.
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*/
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void
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mbpr(void *kvmd, u_long mbaddr)
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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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uintmax_t mbuf_count, mbuf_bytes, mbuf_free, mbuf_failures, mbuf_size;
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uintmax_t cluster_count, cluster_bytes, cluster_limit, cluster_free;
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uintmax_t cluster_failures, cluster_size;
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uintmax_t packet_count, packet_bytes, packet_free, packet_failures;
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uintmax_t tag_count, tag_bytes;
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uintmax_t jumbop_count, jumbop_bytes, jumbop_limit, jumbop_free;
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uintmax_t jumbop_failures, jumbop_size;
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uintmax_t jumbo9_count, jumbo9_bytes, jumbo9_limit, jumbo9_free;
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uintmax_t jumbo9_failures, jumbo9_size;
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uintmax_t jumbo16_count, jumbo16_bytes, jumbo16_limit, jumbo16_free;
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uintmax_t jumbo16_failures, jumbo16_size;
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uintmax_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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int error;
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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_*_all() because some mbuf-related memory is in uma(9),
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* and some malloc(9).
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*/
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if (live) {
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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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} else {
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if (memstat_kvm_all(mtlp, kvmd) < 0) {
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error = memstat_mtl_geterror(mtlp);
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if (error == MEMSTAT_ERROR_KVM)
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warnx("memstat_kvm_all: %s",
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kvm_geterr(kvmd));
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else
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warnx("memstat_kvm_all: %s",
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memstat_strerror(error));
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goto out;
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}
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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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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBOP_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_JUMBOP_MEM_NAME);
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goto out;
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}
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jumbop_count = memstat_get_count(mtp);
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jumbop_bytes = memstat_get_bytes(mtp);
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jumbop_limit = memstat_get_countlimit(mtp);
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jumbop_free = memstat_get_free(mtp);
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jumbop_failures = memstat_get_failures(mtp);
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jumbop_size = memstat_get_size(mtp);
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBO9_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_JUMBO9_MEM_NAME);
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goto out;
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}
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jumbo9_count = memstat_get_count(mtp);
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jumbo9_bytes = memstat_get_bytes(mtp);
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jumbo9_limit = memstat_get_countlimit(mtp);
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jumbo9_free = memstat_get_free(mtp);
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jumbo9_failures = memstat_get_failures(mtp);
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jumbo9_size = memstat_get_size(mtp);
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mtp = memstat_mtl_find(mtlp, ALLOCATOR_UMA, MBUF_JUMBO16_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_JUMBO16_MEM_NAME);
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goto out;
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}
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jumbo16_count = memstat_get_count(mtp);
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jumbo16_bytes = memstat_get_bytes(mtp);
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jumbo16_limit = memstat_get_countlimit(mtp);
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jumbo16_free = memstat_get_free(mtp);
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jumbo16_failures = memstat_get_failures(mtp);
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jumbo16_size = memstat_get_size(mtp);
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printf("%ju/%ju/%ju 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("%ju/%ju/%ju/%ju 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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printf("%ju/%ju mbuf+clusters out of packet secondary zone in use "
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"(current/cache)\n",
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packet_count, packet_free);
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printf("%ju/%ju/%ju/%ju %juk (page size) jumbo clusters in use "
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"(current/cache/total/max)\n",
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jumbop_count, jumbop_free, jumbop_count + jumbop_free,
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jumbop_limit, jumbop_size / 1024);
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printf("%ju/%ju/%ju/%ju 9k jumbo clusters in use "
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"(current/cache/total/max)\n",
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jumbo9_count, jumbo9_free, jumbo9_count + jumbo9_free,
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jumbo9_limit);
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printf("%ju/%ju/%ju/%ju 16k jumbo clusters in use "
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"(current/cache/total/max)\n",
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jumbo16_count, jumbo16_free, jumbo16_count + jumbo16_free,
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jumbo16_limit);
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#if 0
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printf("%ju mbuf tags in use\n", tag_count);
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#endif
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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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(jumbop_count * jumbop_size) + /* jumbo clusters */
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(jumbo9_count * jumbo9_size) +
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(jumbo16_count * jumbo16_size);
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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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(jumbop_free * jumbop_size) + /* jumbo clusters */
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(jumbo9_free * jumbo9_size) +
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(jumbo16_free * jumbo16_size);
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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("%juK/%juK/%juK 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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printf("%ju/%ju/%ju 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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printf("%ju/%ju/%ju requests for jumbo clusters denied "
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"(%juk/9k/16k)\n", jumbop_failures, jumbo9_failures,
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jumbo16_failures, jumbop_size / 1024);
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if (live) {
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mlen = sizeof(nsfbufs);
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if (!sysctlbyname("kern.ipc.nsfbufs", &nsfbufs, &mlen, NULL,
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0) &&
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!sysctlbyname("kern.ipc.nsfbufsused", &nsfbufsused,
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&mlen, NULL, 0) &&
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!sysctlbyname("kern.ipc.nsfbufspeak", &nsfbufspeak,
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&mlen, NULL, 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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mlen = sizeof(mbstat);
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if (sysctlbyname("kern.ipc.mbstat", &mbstat, &mlen, NULL, 0)) {
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warn("kern.ipc.mbstat");
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goto out;
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}
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} else {
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if (kread(mbaddr, (char *)&mbstat, sizeof mbstat))
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goto out;
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}
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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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out:
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memstat_mtl_free(mtlp);
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}
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