1 /* 2 * Copyright (c) 1983, 1988, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. All advertising materials mentioning features or use of this software 14 * must display the following acknowledgement: 15 * This product includes software developed by the University of 16 * California, Berkeley and its contributors. 17 * 4. Neither the name of the University nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 #if 0 36 static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93"; 37 #endif 38 static const char rcsid[] = 39 "$FreeBSD$"; 40 #endif /* not lint */ 41 42 #include <sys/param.h> 43 #include <sys/mbuf.h> 44 #include <sys/protosw.h> 45 #include <sys/socket.h> 46 #include <sys/sysctl.h> 47 48 #include <err.h> 49 #include <stdio.h> 50 #include <stdlib.h> 51 #include <string.h> 52 #include "netstat.h" 53 54 #define YES 1 55 typedef int bool; 56 57 static struct mbtypenames { 58 short mt_type; 59 const char *mt_name; 60 } mbtypenames[] = { 61 { MT_DATA, "data" }, 62 { MT_OOBDATA, "oob data" }, 63 { MT_CONTROL, "ancillary data" }, 64 { MT_HEADER, "packet headers" }, 65 #ifdef MT_SOCKET 66 { MT_SOCKET, "socket structures" }, /* XXX */ 67 #endif 68 #ifdef MT_PCB 69 { MT_PCB, "protocol control blocks" }, /* XXX */ 70 #endif 71 #ifdef MT_RTABLE 72 { MT_RTABLE, "routing table entries" }, /* XXX */ 73 #endif 74 #ifdef MT_HTABLE 75 { MT_HTABLE, "IMP host table entries" }, /* XXX */ 76 #endif 77 #ifdef MT_ATABLE 78 { MT_ATABLE, "address resolution tables" }, 79 #endif 80 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ 81 { MT_SONAME, "socket names and addresses" }, 82 #ifdef MT_SOOPTS 83 { MT_SOOPTS, "socket options" }, 84 #endif 85 #ifdef MT_RIGHTS 86 { MT_RIGHTS, "access rights" }, 87 #endif 88 #ifdef MT_IFADDR 89 { MT_IFADDR, "interface addresses" }, /* XXX */ 90 #endif 91 { 0, 0 } 92 }; 93 94 /* 95 * Print mbuf statistics. 96 */ 97 void 98 mbpr(u_long mbaddr, u_long mbtaddr __unused, u_long nmbcaddr, u_long nmbufaddr, 99 u_long mblimaddr, u_long cllimaddr, u_long cpusaddr __unused, 100 u_long pgsaddr, u_long mbpaddr) 101 { 102 int i, j, nmbufs, nmbclusters, page_size, num_objs; 103 u_int mbuf_limit, clust_limit; 104 u_long totspace[2], totused[2], totnum, totfree; 105 short nmbtypes; 106 size_t mlen; 107 long *mbtypes = NULL; 108 struct mbstat *mbstat = NULL; 109 struct mbpstat **mbpstat = NULL; 110 struct mbtypenames *mp; 111 bool *seen = NULL; 112 113 mlen = sizeof *mbstat; 114 if ((mbstat = malloc(mlen)) == NULL) { 115 warn("malloc: cannot allocate memory for mbstat"); 116 goto err; 117 } 118 119 /* 120 * XXX: Unfortunately, for the time being, we have to fetch 121 * the total length of the per-CPU stats area via sysctl 122 * (regardless of whether we're looking at a core or not. 123 */ 124 if (sysctlbyname("kern.ipc.mb_statpcpu", NULL, &mlen, NULL, 0) < 0) { 125 warn("sysctl: retrieving mb_statpcpu len"); 126 goto err; 127 } 128 num_objs = (int)(mlen / sizeof(struct mbpstat)); 129 if ((mbpstat = calloc(num_objs, sizeof(struct mbpstat *))) == NULL) { 130 warn("calloc: cannot allocate memory for mbpstats pointers"); 131 goto err; 132 } 133 if ((mbpstat[0] = calloc(num_objs, sizeof(struct mbpstat))) == NULL) { 134 warn("calloc: cannot allocate memory for mbpstats"); 135 goto err; 136 } 137 138 if (mbaddr) { 139 if (kread(mbpaddr, (char *)mbpstat[0], mlen)) 140 goto err; 141 if (kread(mbaddr, (char *)mbstat, sizeof mbstat)) 142 goto err; 143 if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int))) 144 goto err; 145 if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int))) 146 goto err; 147 if (kread(mblimaddr, (char *)&mbuf_limit, sizeof(u_int))) 148 goto err; 149 if (kread(cllimaddr, (char *)&clust_limit, sizeof(u_int))) 150 goto err; 151 if (kread(pgsaddr, (char *)&page_size, sizeof(int))) 152 goto err; 153 } else { 154 if (sysctlbyname("kern.ipc.mb_statpcpu", mbpstat[0], &mlen, 155 NULL, 0) < 0) { 156 warn("sysctl: retrieving mb_statpcpu"); 157 goto err; 158 } 159 mlen = sizeof *mbstat; 160 if (sysctlbyname("kern.ipc.mbstat", mbstat, &mlen, NULL, 0) 161 < 0) { 162 warn("sysctl: retrieving mbstat"); 163 goto err; 164 } 165 mlen = sizeof(int); 166 if (sysctlbyname("kern.ipc.nmbclusters", &nmbclusters, &mlen, 167 NULL, 0) < 0) { 168 warn("sysctl: retrieving nmbclusters"); 169 goto err; 170 } 171 mlen = sizeof(int); 172 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &mlen, NULL, 0) 173 < 0) { 174 warn("sysctl: retrieving nmbufs"); 175 goto err; 176 } 177 mlen = sizeof(u_int); 178 if (sysctlbyname("kern.ipc.mbuf_limit", &mbuf_limit, &mlen, 179 NULL, 0) < 0) { 180 warn("sysctl: retrieving mbuf_limit"); 181 goto err; 182 } 183 mlen = sizeof(u_int); 184 if (sysctlbyname("kern.ipc.clust_limit", &clust_limit, &mlen, 185 NULL, 0) < 0) { 186 warn("sysctl: retrieving clust_limit"); 187 goto err; 188 } 189 mlen = sizeof(int); 190 if (sysctlbyname("hw.pagesize", &page_size, &mlen, NULL, 0) 191 < 0) { 192 warn("sysctl: retrieving hw.pagesize"); 193 goto err; 194 } 195 } 196 197 nmbtypes = mbstat->m_numtypes; 198 if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) { 199 warn("calloc: cannot allocate memory for mbtypes seen flag"); 200 goto err; 201 } 202 if ((mbtypes = calloc(nmbtypes, sizeof(long *))) == NULL) { 203 warn("calloc: cannot allocate memory for mbtypes"); 204 goto err; 205 } 206 207 for (i = 0; i < num_objs; i++) 208 mbpstat[i] = mbpstat[0] + i; 209 210 #undef MSIZE 211 #define MSIZE (mbstat->m_msize) 212 #undef MCLBYTES 213 #define MCLBYTES (mbstat->m_mclbytes) 214 #define MBPERPG (page_size / MSIZE) 215 #define CLPERPG (page_size / MCLBYTES) 216 #define GENLST (num_objs - 1) 217 218 printf("mbuf usage:\n"); 219 printf("\tGEN list:\t%lu/%lu (in use/in pool)\n", 220 (mbpstat[GENLST]->mb_mbpgs * MBPERPG - mbpstat[GENLST]->mb_mbfree), 221 (mbpstat[GENLST]->mb_mbpgs * MBPERPG)); 222 totnum = mbpstat[GENLST]->mb_mbpgs * MBPERPG; 223 totfree = mbpstat[GENLST]->mb_mbfree; 224 for (j = 1; j < nmbtypes; j++) 225 mbtypes[j] += mbpstat[GENLST]->mb_mbtypes[j]; 226 totspace[0] = mbpstat[GENLST]->mb_mbpgs * page_size; 227 for (i = 0; i < (num_objs - 1); i++) { 228 if (mbpstat[i]->mb_active == 0) 229 continue; 230 printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i, 231 (mbpstat[i]->mb_mbpgs * MBPERPG - mbpstat[i]->mb_mbfree), 232 (mbpstat[i]->mb_mbpgs * MBPERPG)); 233 totspace[0] += mbpstat[i]->mb_mbpgs * page_size; 234 totnum += mbpstat[i]->mb_mbpgs * MBPERPG; 235 totfree += mbpstat[i]->mb_mbfree; 236 for (j = 1; j < nmbtypes; j++) 237 mbtypes[j] += mbpstat[i]->mb_mbtypes[j]; 238 } 239 totused[0] = totnum - totfree; 240 printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", totused[0], totnum); 241 printf("\tMaximum number allowed on each CPU list: %d\n", mbuf_limit); 242 printf("\tMaximum possible: %d\n", nmbufs); 243 printf("\tAllocated mbuf types:\n"); 244 for (mp = mbtypenames; mp->mt_name; mp++) { 245 if (mbtypes[mp->mt_type]) { 246 seen[mp->mt_type] = YES; 247 printf("\t %lu mbufs allocated to %s\n", 248 mbtypes[mp->mt_type], mp->mt_name); 249 } 250 } 251 for (i = 1; i < nmbtypes; i++) { 252 if (!seen[i] && mbtypes[i]) 253 printf("\t %lu mbufs allocated to <mbuf type: %d>\n", 254 mbtypes[i], i); 255 } 256 printf("\t%lu%% of mbuf map consumed\n", ((totspace[0] * 100) / (nmbufs 257 * MSIZE))); 258 259 printf("mbuf cluster usage:\n"); 260 printf("\tGEN list:\t%lu/%lu (in use/in pool)\n", 261 (mbpstat[GENLST]->mb_clpgs * CLPERPG - mbpstat[GENLST]->mb_clfree), 262 (mbpstat[GENLST]->mb_clpgs * CLPERPG)); 263 totnum = mbpstat[GENLST]->mb_clpgs * CLPERPG; 264 totfree = mbpstat[GENLST]->mb_clfree; 265 totspace[1] = mbpstat[GENLST]->mb_clpgs * page_size; 266 for (i = 0; i < (num_objs - 1); i++) { 267 if (mbpstat[i]->mb_active == 0) 268 continue; 269 printf("\tCPU #%d list:\t%lu/%lu (in use/in pool)\n", i, 270 (mbpstat[i]->mb_clpgs * CLPERPG - mbpstat[i]->mb_clfree), 271 (mbpstat[i]->mb_clpgs * CLPERPG)); 272 totspace[1] += mbpstat[i]->mb_clpgs * page_size; 273 totnum += mbpstat[i]->mb_clpgs * CLPERPG; 274 totfree += mbpstat[i]->mb_clfree; 275 } 276 totused[1] = totnum - totfree; 277 printf("\tTotal:\t\t%lu/%lu (in use/in pool)\n", totused[1], totnum); 278 printf("\tMaximum number allowed on each CPU list: %d\n", clust_limit); 279 printf("\tMaximum possible: %d\n", nmbclusters); 280 printf("\t%lu%% of cluster map consumed\n", ((totspace[1] * 100) / 281 (nmbclusters * MCLBYTES))); 282 283 printf("%lu KBytes of wired memory reserved (%lu%% in use)\n", 284 (totspace[0] + totspace[1]) / 1024, ((totused[0] * MSIZE + 285 totused[1] * MCLBYTES) * 100) / (totspace[0] + totspace[1])); 286 printf("%lu requests for memory denied\n", mbstat->m_drops); 287 printf("%lu requests for memory delayed\n", mbstat->m_wait); 288 printf("%lu calls to protocol drain routines\n", mbstat->m_drain); 289 290 err: 291 if (mbtypes != NULL) 292 free(mbtypes); 293 if (seen != NULL) 294 free(seen); 295 if (mbstat != NULL) 296 free(mbstat); 297 if (mbpstat != NULL) { 298 if (mbpstat[0] != NULL) 299 free(mbpstat[0]); 300 free(mbpstat); 301 } 302 303 return; 304 } 305