mbuf.c revision 1.31
1 /* $NetBSD: mbuf.c,v 1.31 2012/03/20 20:34:58 matt 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 1.31 2012/03/20 20:34:58 matt 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 <kvm.h> 52 #include <stdlib.h> 53 #include <limits.h> 54 #include <errno.h> 55 #include <err.h> 56 #include <stdbool.h> 57 #include "netstat.h" 58 #include "prog_ops.h" 59 60 #define YES 1 61 62 struct mbstat mbstat; 63 struct pool mbpool, mclpool; 64 struct pool_allocator mbpa, mclpa; 65 66 static struct mbtypes { 67 int mt_type; 68 const char *mt_name; 69 } mbtypes[] = { 70 { MT_DATA, "data" }, 71 { MT_OOBDATA, "oob data" }, 72 { MT_CONTROL, "ancillary data" }, 73 { MT_HEADER, "packet headers" }, 74 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 75 { MT_SONAME, "socket names and addresses" }, 76 { MT_SOOPTS, "socket options" }, 77 { 0, 0 } 78 }; 79 80 const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 81 bool seen[256]; /* "have we seen this type yet?" */ 82 83 int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS }; 84 int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS }; 85 86 /* 87 * Print mbuf statistics. 88 */ 89 void 90 mbpr(u_long mbaddr, u_long msizeaddr, u_long mclbaddr, u_long mbpooladdr, 91 u_long 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_user *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 (prog_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); 194 195 dump_drain: 196 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 197 198 if (sflag < 2) 199 return; 200 201 if (!use_sysctl) 202 return; 203 204 if (prog_sysctl(mowners_ctl, 205 sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 206 NULL, &len, NULL, 0) < 0) { 207 if (errno == ENOENT) 208 return; 209 warn("mowners: sysctl test"); 210 return; 211 } 212 len += 10 * sizeof(*mo); /* add some slop */ 213 data = malloc(len); 214 if (data == NULL) { 215 warn("malloc(%lu)", (u_long)len); 216 return; 217 } 218 219 if (prog_sysctl(mowners_ctl, 220 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_counter[MOWNER_COUNTER_CLAIMS] == 0 && 232 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 0 && 233 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 0) 234 continue; 235 if (vflag == 0 && 236 mo->mo_counter[MOWNER_COUNTER_CLAIMS] == 237 mo->mo_counter[MOWNER_COUNTER_RELEASES] && 238 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 239 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES] && 240 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 241 mo->mo_counter[MOWNER_COUNTER_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_counter[MOWNER_COUNTER_CLAIMS] - 253 mo->mo_counter[MOWNER_COUNTER_RELEASES], 254 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] - 255 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES], 256 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] - 257 mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]); 258 lines++; 259 if (vflag) { 260 printf("%30s %-8s %10lu %10lu %10lu\n", 261 "", "claims", 262 mo->mo_counter[MOWNER_COUNTER_CLAIMS], 263 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS], 264 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS]); 265 printf("%30s %-8s %10lu %10lu %10lu\n", 266 "", "releases", 267 mo->mo_counter[MOWNER_COUNTER_RELEASES], 268 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES], 269 mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]); 270 lines += 2; 271 } 272 } 273 free(data); 274 } 275
Indexes created Mon Sep 29 03:10:08 GMT 2025