mbuf.c revision 1.23
1 /* $NetBSD: mbuf.c,v 1.23 2004/04/09 18:48:05 atatat Exp $ */ 2 3 /* 4 * Copyright (c) 1983, 1988, 1993 5 * The Regents of the University of California. All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 3. Neither the name of the University nor the names of its contributors 16 * may be used to endorse or promote products derived from this software 17 * without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 20 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 23 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 24 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 25 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 26 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 27 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 28 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 29 * SUCH DAMAGE. 30 */ 31 32 #include <sys/cdefs.h> 33 #ifndef lint 34 #if 0 35 static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 36 #else 37 __RCSID("$NetBSD: mbuf.c,v 1.23 2004/04/09 18:48:05 atatat Exp $"); 38 #endif 39 #endif /* not lint */ 40 41 #define __POOL_EXPOSE 42 43 #include <sys/param.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 #include <sys/mbuf.h> 47 #include <sys/pool.h> 48 #include <sys/sysctl.h> 49 50 #include <stdio.h> 51 #include <stdlib.h> 52 #include <limits.h> 53 #include <errno.h> 54 #include <err.h> 55 #include "netstat.h" 56 57 #define YES 1 58 typedef int bool; 59 60 struct mbstat mbstat; 61 struct pool mbpool, mclpool; 62 struct pool_allocator mbpa, mclpa; 63 64 static struct mbtypes { 65 int mt_type; 66 char *mt_name; 67 } mbtypes[] = { 68 { MT_DATA, "data" }, 69 { MT_OOBDATA, "oob data" }, 70 { MT_CONTROL, "ancillary data" }, 71 { MT_HEADER, "packet headers" }, 72 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 73 { MT_SONAME, "socket names and addresses" }, 74 { MT_SOOPTS, "socket options" }, 75 { 0, 0 } 76 }; 77 78 const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 79 bool seen[256]; /* "have we seen this type yet?" */ 80 81 int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS }; 82 int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS }; 83 84 /* 85 * Print mbuf statistics. 86 */ 87 void 88 mbpr(mbaddr, msizeaddr, mclbaddr, mbpooladdr, mclpooladdr) 89 u_long mbaddr; 90 u_long msizeaddr, mclbaddr; 91 u_long mbpooladdr, mclpooladdr; 92 { 93 u_long totmem, totused, totpct; 94 u_int totmbufs; 95 int i, lines; 96 struct mbtypes *mp; 97 size_t len; 98 void *data; 99 struct mowner *mo; 100 int mclbytes, msize; 101 102 if (nmbtypes != 256) { 103 fprintf(stderr, 104 "%s: unexpected change to mbstat; check source\n", 105 getprogname()); 106 return; 107 } 108 109 if (use_sysctl) { 110 size_t mbstatlen = sizeof(mbstat); 111 if (sysctl(mbstats_ctl, 112 sizeof(mbstats_ctl) / sizeof(mbstats_ctl[0]), 113 &mbstat, &mbstatlen, NULL, 0) < 0) { 114 warn("mbstat: sysctl failed"); 115 return; 116 } 117 goto printit; 118 } 119 120 if (mbaddr == 0) { 121 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 122 getprogname()); 123 return; 124 } 125 /*XXX*/ 126 if (msizeaddr != 0) 127 kread(msizeaddr, (char *)&msize, sizeof (msize)); 128 else 129 msize = MSIZE; 130 if (mclbaddr != 0) 131 kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes)); 132 else 133 mclbytes = MCLBYTES; 134 /*XXX*/ 135 136 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 137 return; 138 139 if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool))) 140 return; 141 142 if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool))) 143 return; 144 145 mbpooladdr = (u_long) mbpool.pr_alloc; 146 mclpooladdr = (u_long) mclpool.pr_alloc; 147 148 if (kread(mbpooladdr, (char *)&mbpa, sizeof (mbpa))) 149 return; 150 151 if (kread(mclpooladdr, (char *)&mclpa, sizeof (mclpa))) 152 return; 153 154 printit: 155 totmbufs = 0; 156 for (mp = mbtypes; mp->mt_name; mp++) 157 totmbufs += mbstat.m_mtypes[mp->mt_type]; 158 printf("%u mbufs in use:\n", totmbufs); 159 for (mp = mbtypes; mp->mt_name; mp++) 160 if (mbstat.m_mtypes[mp->mt_type]) { 161 seen[mp->mt_type] = YES; 162 printf("\t%u mbufs allocated to %s\n", 163 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 164 } 165 seen[MT_FREE] = YES; 166 for (i = 0; i < nmbtypes; i++) 167 if (!seen[i] && mbstat.m_mtypes[i]) { 168 printf("\t%u mbufs allocated to <mbuf type %d>\n", 169 mbstat.m_mtypes[i], i); 170 } 171 172 if (use_sysctl) /* XXX */ 173 goto dump_drain; 174 175 printf("%lu/%lu mapped pages in use\n", 176 (u_long)(mclpool.pr_nget - mclpool.pr_nput), 177 ((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage)); 178 totmem = (mbpool.pr_npages << mbpa.pa_pageshift) + 179 (mclpool.pr_npages << mclpa.pa_pageshift); 180 totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size + 181 (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size; 182 if (totmem == 0) 183 totpct = 0; 184 else if (totused < (ULONG_MAX/100)) 185 totpct = (totused * 100)/totmem; 186 else { 187 u_long totmem1 = totmem/100; 188 u_long totused1 = totused/100; 189 totpct = (totused1 * 100)/totmem1; 190 } 191 192 printf("%lu Kbytes allocated to network (%lu%% in use)\n", 193 totmem / 1024, totpct); 194 printf("%lu requests for memory denied\n", mbstat.m_drops); 195 printf("%lu requests for memory delayed\n", mbstat.m_wait); 196 197 dump_drain: 198 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 199 200 if (sflag < 2) 201 return; 202 203 if (!use_sysctl) 204 return; 205 206 if (sysctl(mowners_ctl, sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 207 NULL, &len, NULL, 0) < 0) { 208 if (errno == ENOENT) 209 return; 210 warn("mowners: sysctl test"); 211 return; 212 } 213 len += 10 * sizeof(mo); /* add some slop */ 214 data = malloc(len); 215 if (data == NULL) { 216 warn("malloc(%lu)", (u_long)len); 217 return; 218 } 219 220 if (sysctl(mowners_ctl, sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 221 data, &len, NULL, 0) < 0) { 222 warn("mowners: sysctl get"); 223 free(data); 224 return; 225 } 226 227 for (mo = (void *) data, lines = 0; len >= sizeof(*mo); 228 len -= sizeof(*mo), mo++) { 229 char buf[32]; 230 if (vflag == 1 && 231 mo->mo_claims == 0 && 232 mo->mo_ext_claims == 0 && 233 mo->mo_cluster_claims == 0) 234 continue; 235 if (vflag == 0 && 236 mo->mo_claims == mo->mo_releases && 237 mo->mo_ext_claims == mo->mo_ext_releases && 238 mo->mo_cluster_claims == mo->mo_cluster_releases) 239 continue; 240 snprintf(buf, sizeof(buf), "%16s %-13s", 241 mo->mo_name, mo->mo_descr); 242 if ((lines % 24) == 0 || lines > 24) { 243 printf("%30s %-8s %10s %10s %10s\n", 244 "", "", "small", "ext", "cluster"); 245 lines = 1; 246 } 247 printf("%30s %-8s %10lu %10lu %10lu\n", 248 buf, "inuse", 249 mo->mo_claims - mo->mo_releases, 250 mo->mo_ext_claims - mo->mo_ext_releases, 251 mo->mo_cluster_claims - mo->mo_cluster_releases); 252 lines++; 253 if (vflag) { 254 printf("%30s %-8s %10lu %10lu %10lu\n", 255 "", "claims", 256 mo->mo_claims, 257 mo->mo_ext_claims, 258 mo->mo_cluster_claims); 259 printf("%30s %-8s %10lu %10lu %10lu\n", 260 "", "releases", 261 mo->mo_releases, 262 mo->mo_ext_releases, 263 mo->mo_cluster_releases); 264 lines += 2; 265 } 266 } 267 free(data); 268 } 269
Indexes created Mon Sep 29 21:09:56 GMT 2025