1 /* $NetBSD: mbuf.c,v 1.36 2024/02/24 09:53:26 mlelstv 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 1.36 2024/02/24 09:53:26 mlelstv 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 "netstat.h" 57 #include "prog_ops.h" 58 59 #define YES 1 60 61 struct mbstat mbstat; 62 struct pool mbpool, mclpool; 63 struct pool_allocator mbpa, mclpa; 64 65 static struct mbtypes { 66 int mt_type; 67 const char *mt_name; 68 } mbtypes[] = { 69 { MT_DATA, "data" }, 70 { MT_OOBDATA, "oob data" }, 71 { MT_CONTROL, "ancillary data" }, 72 { MT_HEADER, "packet headers" }, 73 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 74 { MT_SONAME, "socket names and addresses" }, 75 { MT_SOOPTS, "socket options" }, 76 { 0, 0 } 77 }; 78 79 const int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); 80 bool seen[256]; /* "have we seen this type yet?" */ 81 82 int mbstats_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_STATS }; 83 int mowners_ctl[] = { CTL_KERN, KERN_MBUF, MBUF_MOWNERS }; 84 85 /* 86 * Print mbuf statistics. 87 */ 88 void 89 mbpr(u_long mbaddr, u_long msizeaddr, u_long mclbaddr, u_long mbpooladdr, 90 u_long mclpooladdr) 91 { 92 u_long totmem, totused, totpct; 93 u_int totmbufs; 94 int i, lines; 95 struct mbtypes *mp; 96 size_t len; 97 void *data; 98 struct mowner_user *mo; 99 int mclbytes, msize; 100 101 if (nmbtypes != 256) { 102 fprintf(stderr, 103 "%s: unexpected change to mbstat; check source\n", 104 getprogname()); 105 return; 106 } 107 108 if (use_sysctl) { 109 size_t mbstatlen = sizeof(mbstat); 110 if (prog_sysctl(mbstats_ctl, 111 sizeof(mbstats_ctl) / sizeof(mbstats_ctl[0]), 112 &mbstat, &mbstatlen, NULL, 0) < 0) { 113 warn("mbstat: sysctl failed"); 114 return; 115 } 116 goto printit; 117 } 118 119 if (mbaddr == 0) { 120 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", 121 getprogname()); 122 return; 123 } 124 /*XXX*/ 125 if (msizeaddr != 0) 126 kread(msizeaddr, (char *)&msize, sizeof (msize)); 127 else 128 msize = MSIZE; 129 if (mclbaddr != 0) 130 kread(mclbaddr, (char *)&mclbytes, sizeof (mclbytes)); 131 else 132 mclbytes = MCLBYTES; 133 /*XXX*/ 134 135 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) 136 return; 137 138 if (kread(mbpooladdr, (char *)&mbpool, sizeof (mbpool))) 139 return; 140 141 if (kread(mclpooladdr, (char *)&mclpool, sizeof (mclpool))) 142 return; 143 144 mbpooladdr = (u_long) mbpool.pr_alloc; 145 mclpooladdr = (u_long) mclpool.pr_alloc; 146 147 if (kread(mbpooladdr, (char *)&mbpa, sizeof (mbpa))) 148 return; 149 150 if (kread(mclpooladdr, (char *)&mclpa, sizeof (mclpa))) 151 return; 152 153 printit: 154 totmbufs = 0; 155 for (mp = mbtypes; mp->mt_name; mp++) 156 totmbufs += mbstat.m_mtypes[mp->mt_type]; 157 printf("%u mbufs in use:\n", totmbufs); 158 for (mp = mbtypes; mp->mt_name; mp++) 159 if (mbstat.m_mtypes[mp->mt_type]) { 160 seen[mp->mt_type] = YES; 161 printf("\t%u mbufs allocated to %s\n", 162 mbstat.m_mtypes[mp->mt_type], mp->mt_name); 163 } 164 seen[MT_FREE] = YES; 165 for (i = 0; i < nmbtypes; i++) 166 if (!seen[i] && mbstat.m_mtypes[i]) { 167 printf("\t%u mbufs allocated to <mbuf type %d>\n", 168 mbstat.m_mtypes[i], i); 169 } 170 171 if (use_sysctl) /* XXX */ 172 goto dump_drain; 173 174 printf("%lu/%lu mapped pages in use\n", 175 (u_long)(mclpool.pr_nget - mclpool.pr_nput), 176 ((u_long)mclpool.pr_npages * mclpool.pr_itemsperpage)); 177 totmem = (mbpool.pr_npages << mbpa.pa_pageshift) + 178 (mclpool.pr_npages << mclpa.pa_pageshift); 179 totused = (mbpool.pr_nget - mbpool.pr_nput) * mbpool.pr_size + 180 (mclpool.pr_nget - mclpool.pr_nput) * mclpool.pr_size; 181 if (totmem == 0) 182 totpct = 0; 183 else if (totused < (ULONG_MAX / 100)) 184 totpct = (totused * 100)/totmem; 185 else { 186 u_long totmem1 = totmem / 100; 187 u_long totused1 = totused / 100; 188 totpct = (totused1 * 100) / totmem1; 189 } 190 191 printf("%lu Kbytes allocated to network (%lu%% in use)\n", 192 totmem / 1024, totpct); 193 194 dump_drain: 195 printf("%lu calls to protocol drain routines\n", mbstat.m_drain); 196 197 if (sflag < 2) 198 return; 199 200 if (!use_sysctl) 201 return; 202 203 if (prog_sysctl(mowners_ctl, 204 sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 205 NULL, &len, NULL, 0) < 0) { 206 if (errno == ENOENT) 207 return; 208 warn("mowners: sysctl test"); 209 return; 210 } 211 len += 10 * sizeof(*mo); /* add some slop */ 212 data = malloc(len); 213 if (data == NULL) { 214 warn("malloc(%lu)", (u_long)len); 215 return; 216 } 217 218 if (prog_sysctl(mowners_ctl, 219 sizeof(mowners_ctl)/sizeof(mowners_ctl[0]), 220 data, &len, NULL, 0) < 0) { 221 warn("mowners: sysctl get"); 222 free(data); 223 return; 224 } 225 226 for (mo = (void *) data, lines = 0; len >= sizeof(*mo); 227 len -= sizeof(*mo), mo++) { 228 char buf[34]; 229 if (vflag == 1 && 230 mo->mo_counter[MOWNER_COUNTER_CLAIMS] == 0 && 231 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 0 && 232 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 0) 233 continue; 234 if (vflag == 0 && 235 mo->mo_counter[MOWNER_COUNTER_CLAIMS] == 236 mo->mo_counter[MOWNER_COUNTER_RELEASES] && 237 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] == 238 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES] && 239 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] == 240 mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]) 241 continue; 242 snprintf(buf, sizeof(buf), "%16.16s %-13.16s", 243 mo->mo_name, mo->mo_descr); 244 if ((lines % 24) == 0 || lines > 24) { 245 printf("%30s %-8s %10s %10s %10s\n", 246 "", "", "small", "ext", "cluster"); 247 lines = 1; 248 } 249 printf("%30s %-8s %10lu %10lu %10lu\n", 250 buf, "inuse", 251 mo->mo_counter[MOWNER_COUNTER_CLAIMS] - 252 mo->mo_counter[MOWNER_COUNTER_RELEASES], 253 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS] - 254 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES], 255 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS] - 256 mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]); 257 lines++; 258 if (vflag) { 259 printf("%30s %-8s %10lu %10lu %10lu\n", 260 "", "claims", 261 mo->mo_counter[MOWNER_COUNTER_CLAIMS], 262 mo->mo_counter[MOWNER_COUNTER_EXT_CLAIMS], 263 mo->mo_counter[MOWNER_COUNTER_CLUSTER_CLAIMS]); 264 printf("%30s %-8s %10lu %10lu %10lu\n", 265 "", "releases", 266 mo->mo_counter[MOWNER_COUNTER_RELEASES], 267 mo->mo_counter[MOWNER_COUNTER_EXT_RELEASES], 268 mo->mo_counter[MOWNER_COUNTER_CLUSTER_RELEASES]); 269 lines += 2; 270 } 271 } 272 free(data); 273 } 274
Indexes created Fri Sep 26 20:09:58 GMT 2025