/* $OpenBSD: mbuf.c,v 1.19 2003/06/03 02:56:13 millert Exp $ */ /* $NetBSD: mbuf.c,v 1.9 1996/05/07 02:55:03 thorpej Exp $ */ /* * 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. */ #ifndef lint #if 0 static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93"; #else static char *rcsid = "$OpenBSD: mbuf.c,v 1.19 2003/06/03 02:56:13 millert Exp $"; #endif #endif /* not lint */ #include #include #include #include #include #include #include #include #include #include #include #include #include "netstat.h" #define YES 1 typedef int bool; struct mbstat mbstat; struct pool mbpool, mclpool; extern kvm_t *kvmd; static struct mbtypes { int mt_type; char *mt_name; } mbtypes[] = { { MT_DATA, "data" }, { MT_OOBDATA, "oob data" }, { MT_CONTROL, "ancillary data" }, { MT_HEADER, "packet headers" }, { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ { MT_SONAME, "socket names and addresses" }, { MT_SOOPTS, "socket options" }, { 0, 0 } }; int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); bool seen[256]; /* "have we seen this type yet?" */ /* * Print mbuf statistics. */ void mbpr(u_long mbaddr, u_long mbpooladdr, u_long mclpooladdr) { int totmem, totused, totmbufs, totpct; int i, mib[4], npools, flag = 0; struct pool pool; struct mbtypes *mp; size_t size; int page_size = getpagesize(); if (nmbtypes != 256) { fprintf(stderr, "%s: unexpected change to mbstat; check source\n", __progname); return; } if (kvmd == NULL) { if (mbaddr == 0) { fprintf(stderr, "%s: mbstat: symbol not in namelist\n", __progname); return; } if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) return; if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool))) return; if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool))) return; } else { mib[0] = CTL_KERN; mib[1] = KERN_MBSTAT; size = sizeof(mbstat); if (sysctl(mib, 2, &mbstat, &size, NULL, 0) < 0) { printf("Can't retrieve mbuf statistics from the kernel: %s\n", strerror(errno)); return; } mib[0] = CTL_KERN; mib[1] = KERN_POOL; mib[2] = KERN_POOL_NPOOLS; size = sizeof(npools); if (sysctl(mib, 3, &npools, &size, NULL, 0) < 0) { printf("Can't figure out number of pools in kernel: %s\n", strerror(errno)); return; } for (i = 1; npools; i++) { char name[32]; mib[0] = CTL_KERN; mib[1] = KERN_POOL; mib[2] = KERN_POOL_POOL; mib[3] = i; size = sizeof(struct pool); if (sysctl(mib, 4, &pool, &size, NULL, 0) < 0) { if (errno == ENOENT) continue; printf("error getting pool: %s\n", strerror(errno)); return; } npools--; mib[2] = KERN_POOL_NAME; size = sizeof(name); if (sysctl(mib, 4, &name, &size, NULL, 0) < 0) { printf("error getting pool name: %s\n", strerror(errno)); return; } if (!strncmp(name, "mbpl", strlen("mbpl"))) { bcopy(&pool, &mbpool, sizeof(struct pool)); flag++; } else { if (!strncmp(name, "mclpl", strlen("mclpl"))) { bcopy(&pool, &mclpool, sizeof(struct pool)); flag++; } } if (flag == 2) break; } } totmbufs = 0; for (mp = mbtypes; mp->mt_name; mp++) totmbufs += mbstat.m_mtypes[mp->mt_type]; printf("%u mbuf%s in use:\n", totmbufs, plural(totmbufs)); for (mp = mbtypes; mp->mt_name; mp++) if (mbstat.m_mtypes[mp->mt_type]) { seen[mp->mt_type] = YES; printf("\t%u mbuf%s allocated to %s\n", mbstat.m_mtypes[mp->mt_type], plural((int)mbstat.m_mtypes[mp->mt_type]), mp->mt_name); } seen[MT_FREE] = YES; for (i = 0; i < nmbtypes; i++) if (!seen[i] && mbstat.m_mtypes[i]) { printf("\t%u mbuf%s allocated to \n", mbstat.m_mtypes[i], plural((int)mbstat.m_mtypes[i]), i); } printf("%lu/%lu/%lu mbuf cluster pages in use (current/peak/max)\n", (u_long)(mclpool.pr_nget - mclpool.pr_nput), (u_long)mclpool.pr_hiwat, (u_long)mclpool.pr_maxpages); totmem = (mbpool.pr_npages * page_size) + (mclpool.pr_npages * page_size); totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size + (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size; totpct = (totmem == 0)? 0 : ((totused * 100)/totmem); printf("%u Kbytes allocated to network (%d%% in use)\n", totmem / 1024, totpct); 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); }