mbuf.c revision 1.20
1 /* $NetBSD: mbuf.c,v 1.20 2003/02/27 08:07:14 enami 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. All advertising materials mentioning features or use of this software 16 * must display the following acknowledgement: 17 * This product includes software developed by the University of 18 * California, Berkeley and its contributors. 19 * 4. Neither the name of the University nor the names of its contributors 20 * may be used to endorse or promote products derived from this software 21 * without specific prior written permission. 22 * 23 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 26 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 33 * SUCH DAMAGE. 34 */ 35 36 #include <sys/cdefs.h> 37 #ifndef lint 38 #if 0 39 static char sccsid[] = "from: @(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 40 #else 41 __RCSID("$NetBSD: mbuf.c,v 1.20 2003/02/27 08:07:14 enami Exp $"); 42 #endif 43 #endif /* not lint */ 44 45 #define __POOL_EXPOSE 46 47 #include <sys/param.h> 48 #include <sys/protosw.h> 49 #include <sys/socket.h> 50 #include <sys/mbuf.h> 51 #include <sys/pool.h> 52 #include <sys/sysctl.h> 53 54 #include <stdio.h> 55 #include <stdlib.h> 56 #include <limits.h> 57 #include <errno.h> 58 #include <err.h> 59 #include "netstat.h" 60 61 #define YES 1 62 typedef int bool; 63 64 struct mbstat mbstat; 65 struct pool mbpool, mclpool; 66 struct pool_allocator mbpa, mclpa; 67 68 static struct mbtypes { 69 int mt_type; 70 char *mt_name; 71 } mbtypes[] = { 72 { MT_DATA, "data" }, 73 { MT_OOBDATA, "oob data" }, 74 { MT_CONTROL, "ancillary data" }, 75 { MT_HEADER, "packet headers" }, 76 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 77 { MT_SONAME, "socket names and addresses" }, 78 { MT_SOOPTS, "socket options" }, 79 { 0, 0 } 80 }; 81 82 const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 83 bool seen[256]; /* "have we seen this type yet?" */ 84 85 int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS }; 86 int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS }; 87 88 /* 89 * Print mbuf statistics. 90 */ 91 void 92 mbpr(mbaddr, msizeaddr, mclbaddr, mbpooladdr, mclpooladdr) 93 u_long mbaddr; 94 u_long msizeaddr, mclbaddr; 95 u_long mbpooladdr, mclpooladdr; 96 { 97 u_long totmem, totused, totpct; 98 u_int totmbufs; 99 int i, lines; 100 struct mbtypes *mp; 101 size_t len; 102 void *data; 103 struct mowner *mo; 104 int mclbytes, msize; 105 106 if (nmbtypes != 256) { 107 fprintf(stderr, 108 "%s: unexpected change to mbstat; check source\n", 109 getprogname()); 110 return; 111 } 112 113 if (use_sysctl) { 114 size_t mbstatlen = sizeof(mbstat); 115 if (sysctl(mbstats_ctl, 116 sizeof(mbstats_ctl) / sizeof(mbstats_ctl[0]), 117 &mbstat, &mbstatlen, NULL, 0) < 0) { 118 warn("mbstat: sysctl failed"); 119 return; 120 } 121 goto printit; 122 } 123 124 if (mbaddr == 0) { 125 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 126 getprogname()); 127 return; 128 } 129 /*XXX*/ 130 if (msizeaddr != 0) 131 kread(msizeaddr, (char *)&msize, sizeof (msize)); 132 else 133 msize = MSIZE; 134 if (mclbaddr != 0) 135 kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes)); 136 else 137 mclbytes = MCLBYTES; 138 /*XXX*/ 139 140 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 141 return; 142 143 if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool))) 144 return; 145 146 if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool))) 147 return; 148 149 mbpooladdr = (u_long) mbpool.pr_alloc; 150 mclpooladdr = (u_long) mclpool.pr_alloc; 151 152 if (kread(mbpooladdr, (char *)&mbpa, sizeof (mbpa))) 153 return; 154 155 if (kread(mclpooladdr, (char *)&mclpa, sizeof (mclpa))) 156 return; 157 158 printit: 159 totmbufs = 0; 160 for (mp = mbtypes; mp->mt_name; mp++) 161 totmbufs += mbstat.m_mtypes[mp->mt_type]; 162 printf("%u mbufs in use:\n", totmbufs); 163 for (mp = mbtypes; mp->mt_name; mp++) 164 if (mbstat.m_mtypes[mp->mt_type]) { 165 seen[mp->mt_type] = YES; 166 printf("\t%u mbufs allocated to %s\n", 167 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 168 } 169 seen[MT_FREE] = YES; 170 for (i = 0; i < nmbtypes; i++) 171 if (!seen[i] && mbstat.m_mtypes[i]) { 172 printf("\t%u mbufs allocated to <mbuf type %d>\n", 173 mbstat.m_mtypes[i], i); 174 } 175 176 if (use_sysctl) /* XXX */ 177 goto dump_mowners; 178 179 printf("%lu/%lu mapped pages in use\n", 180 (u_long)(mclpool.pr_nget - mclpool.pr_nput), 181 ((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage)); 182 totmem = (mbpool.pr_npages << mbpa.pa_pageshift) + 183 (mclpool.pr_npages << mclpa.pa_pageshift); 184 totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size + 185 (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size; 186 if (totmem == 0) 187 totpct = 0; 188 else if (totused < (ULONG_MAX/100)) 189 totpct = (totused * 100)/totmem; 190 else { 191 u_long totmem1 = totmem/100; 192 u_long totused1 = totused/100; 193 totpct = (totused1 * 100)/totmem1; 194 } 195 196 printf("%lu Kbytes allocated to network (%lu%% in use)\n", 197 totmem / 1024, totpct); 198 printf("%lu requests for memory denied\n", mbstat.m_drops); 199 printf("%lu requests for memory delayed\n", mbstat.m_wait); 200 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 201 202 dump_mowners: 203 if (sflag < 2) 204 return; 205 206 if (!use_sysctl) 207 return; 208 209 if (sysctl(mowners_ctl, sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 210 NULL, &len, NULL, 0) < 0) { 211 if (errno == ENOPROTOOPT) 212 return; 213 warn("mowners: sysctl test"); 214 return; 215 } 216 len += 10 * sizeof(mo); /* add some slop */ 217 data = malloc(len); 218 if (data == NULL) { 219 warn("malloc(%lu)", (u_long)len); 220 return; 221 } 222 223 if (sysctl(mowners_ctl, sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 224 data, &len, NULL, 0) < 0) { 225 warn("mowners: sysctl get"); 226 free(data); 227 return; 228 } 229 230 for (mo = (void *) data, lines = 0; len >= sizeof(*mo); 231 len -= sizeof(*mo), mo++) { 232 char buf[32]; 233 if (vflag == 1 && 234 mo->mo_claims == 0 && 235 mo->mo_ext_claims == 0 && 236 mo->mo_cluster_claims == 0) 237 continue; 238 if (vflag == 0 && 239 mo->mo_claims == mo->mo_releases && 240 mo->mo_ext_claims == mo->mo_ext_releases && 241 mo->mo_cluster_claims == mo->mo_cluster_releases) 242 continue; 243 snprintf(buf, sizeof(buf), "%16s %-13s", 244 mo->mo_name, mo->mo_descr); 245 if ((lines % 24) == 0 || lines > 24) { 246 printf("%30s %-8s %10s %10s %10s\n", 247 "", "", "small", "ext", "cluster"); 248 lines = 1; 249 } 250 printf("%30s %-8s %10lu %10lu %10lu\n", 251 buf, "inuse", 252 mo->mo_claims - mo->mo_releases, 253 mo->mo_ext_claims - mo->mo_ext_releases, 254 mo->mo_cluster_claims - mo->mo_cluster_releases); 255 lines++; 256 if (vflag) { 257 printf("%30s %-8s %10lu %10lu %10lu\n", 258 "", "claims", 259 mo->mo_claims, 260 mo->mo_ext_claims, 261 mo->mo_cluster_claims); 262 printf("%30s %-8s %10lu %10lu %10lu\n", 263 "", "releases", 264 mo->mo_releases, 265 mo->mo_ext_releases, 266 mo->mo_cluster_releases); 267 lines += 2; 268 } 269 } 270 free(data); 271 } 272
Indexes created Sun Sep 28 12:09:53 GMT 2025