/* * 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. 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. * * @(#)mbuf.c 8.1 (Berkeley) 6/6/93 * $FreeBSD: src/usr.bin/netstat/mbuf.c,v 1.17.2.3 2001/08/10 09:07:09 ru Exp $ * $DragonFly: src/usr.bin/netstat/mbuf.c,v 1.7 2006/10/09 22:30:48 hsu Exp $ */ #define _KERNEL_STRUCTURES #include #include #include #include #include #include #include #include #include "netstat.h" #define YES 1 typedef int bool; static struct mbtypenames { int mt_type; const char *mt_name; } mbtypenames[] = { { MT_DATA, "data" }, { MT_OOBDATA, "oob data" }, { MT_CONTROL, "ancillary data" }, { MT_HEADER, "packet headers" }, { MT_SONAME, "socket names and addresses" }, { 0, 0 } }; /* * Print mbuf statistics. */ void mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbjcaddr, u_long nmbufaddr, u_long ncpusaddr) { u_long totmem, totpossible; struct mbstat *mbstat; struct mbtypenames *mp; int name[3], nmbclusters, nmbjclusters, nmbufs, nmbtypes; size_t nmbclen, nmbjclen, nmbuflen, mbstatlen, mbtypeslen; u_long *mbtypes; int ncpus; int n; int i; bool *seen; /* "have we seen this type yet?" */ mbtypes = NULL; seen = NULL; mbstat = 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; } nmbtypes = mbtypeslen / sizeof(*mbtypes); if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) { warn("calloc"); goto err; } if (mbaddr) { if (kread(ncpusaddr, (char *)&ncpus, sizeof ncpus)) goto err; mbstat = calloc(ncpus, sizeof(*mbstat)); if (kread(mbaddr, (char *)mbstat, sizeof *mbstat * ncpus)) goto err; mbtypes = calloc(ncpus, mbtypeslen); if (kread(mbtaddr, (char *)mbtypes, mbtypeslen * ncpus)) goto err; if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int))) goto err; if (kread(nmbjcaddr, (char *)&nmbjclusters, sizeof(int))) goto err; if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int))) goto err; for (n = 1; n < ncpus; ++n) { mbstat[0].m_mbufs += mbstat[n].m_mbufs; mbstat[0].m_clusters += mbstat[n].m_clusters; mbstat[0].m_drops += mbstat[n].m_drops; mbstat[0].m_wait += mbstat[n].m_wait; mbstat[0].m_drain += mbstat[n].m_drain; for (i = 0; i < nmbtypes; ++i) { mbtypes[i] += mbtypes[n * nmbtypes + i]; } } } else { name[0] = CTL_KERN; name[1] = KERN_IPC; name[2] = KIPC_MBSTAT; mbstat = malloc(sizeof(*mbstat)); mbstatlen = sizeof *mbstat; /* fake ncpus, kernel will aggregate mbstat array for us */ if (sysctl(name, 3, mbstat, &mbstatlen, 0, 0) < 0) { warn("sysctl: retrieving mbstat"); goto err; } mbtypes = malloc(mbtypeslen); if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL, 0) < 0) { warn("sysctl: retrieving mbtypes"); goto err; } name[2] = KIPC_NMBCLUSTERS; nmbclen = sizeof(int); if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) { warn("sysctl: retrieving nmbclusters"); goto err; } nmbjclen = sizeof(int); if (sysctlbyname("kern.ipc.nmbjclusters", &nmbjclusters, &nmbjclen, 0, 0) < 0) { warn("sysctl: retrieving nmbjclusters"); goto err; } nmbuflen = sizeof(int); if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) { warn("sysctl: retrieving nmbufs"); goto err; } } #undef MSIZE #define MSIZE (mbstat->m_msize) #undef MCLBYTES #define MCLBYTES (mbstat->m_mclbytes) #undef MJUMPAGESIZE #define MJUMPAGESIZE (mbstat->m_mjumpagesize) printf("%lu/%u mbufs in use (current/max):\n", mbstat->m_mbufs, nmbufs); printf("%lu/%u mbuf clusters in use (current/max)\n", mbstat->m_clusters, nmbclusters); printf("%lu/%u mbuf jumbo clusters in use (current/max)\n", mbstat->m_jclusters, nmbjclusters); for (mp = mbtypenames; mp->mt_name; mp++) if (mbtypes[mp->mt_type]) { seen[mp->mt_type] = YES; printf("\t%lu mbufs and mbuf clusters " "allocated to %s\n", mbtypes[mp->mt_type], mp->mt_name); } seen[MT_FREE] = YES; for (i = 0; i < nmbtypes; i++) if (!seen[i] && mbtypes[i]) { printf("\t%lu mbufs and mbuf clusters allocated to \n", mbtypes[i], i); } totmem = mbstat->m_mbufs * MSIZE + mbstat->m_clusters * MCLBYTES + mbstat->m_jclusters * MJUMPAGESIZE; totpossible = MSIZE * nmbufs + nmbclusters * MCLBYTES + nmbjclusters * MJUMPAGESIZE; printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n", totmem / 1024, (totmem * 100) / totpossible); 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 (mbstat != NULL) free(mbstat); if (mbtypes != NULL) free(mbtypes); if (seen != NULL) free(seen); }