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33 * @(#)mbuf.c 8.1 (Berkeley) 6/6/93
34 * $FreeBSD: src/usr.bin/netstat/mbuf.c,v 1.17.2.3 2001/08/10 09:07:09 ru Exp $
35 * $DragonFly: src/usr.bin/netstat/mbuf.c,v 1.2 2003/06/17 04:29:30 dillon Exp $
38 #include <sys/param.h>
40 #include <sys/protosw.h>
41 #include <sys/socket.h>
42 #include <sys/sysctl.h>
52 static struct mbtypenames {
57 { MT_OOBDATA, "oob data" },
58 { MT_CONTROL, "ancillary data" },
59 { MT_HEADER, "packet headers" },
61 { MT_SOCKET, "socket structures" }, /* XXX */
64 { MT_PCB, "protocol control blocks" }, /* XXX */
67 { MT_RTABLE, "routing table entries" }, /* XXX */
70 { MT_HTABLE, "IMP host table entries" }, /* XXX */
73 { MT_ATABLE, "address resolution tables" },
75 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
76 { MT_SONAME, "socket names and addresses" },
78 { MT_SOOPTS, "socket options" },
81 { MT_RIGHTS, "access rights" },
84 { MT_IFADDR, "interface addresses" }, /* XXX */
90 * Print mbuf statistics.
93 mbpr(u_long mbaddr, u_long mbtaddr, u_long nmbcaddr, u_long nmbufaddr)
95 u_long totmem, totpossible, totmbufs;
98 struct mbtypenames *mp;
99 int name[3], nmbclusters, nmbufs, nmbtypes;
100 size_t nmbclen, nmbuflen, mbstatlen, mbtypeslen;
102 bool *seen; /* "have we seen this type yet?" */
109 * We can't kread() mbtypeslen from a core image so we'll
110 * bogusly assume it's the same as in the running kernel.
112 if (sysctlbyname("kern.ipc.mbtypes", NULL, &mbtypeslen, NULL, 0) < 0) {
113 warn("sysctl: retrieving mbtypes length");
116 if ((mbtypes = malloc(mbtypeslen)) == NULL) {
117 warn("malloc: %lu bytes for mbtypes", (u_long)mbtypeslen);
121 nmbtypes = mbtypeslen / sizeof(*mbtypes);
122 if ((seen = calloc(nmbtypes, sizeof(*seen))) == NULL) {
128 if (kread(mbaddr, (char *)&mbstat, sizeof mbstat))
130 if (kread(mbtaddr, (char *)mbtypes, mbtypeslen))
132 if (kread(nmbcaddr, (char *)&nmbclusters, sizeof(int)))
134 if (kread(nmbufaddr, (char *)&nmbufs, sizeof(int)))
139 name[2] = KIPC_MBSTAT;
140 mbstatlen = sizeof mbstat;
141 if (sysctl(name, 3, &mbstat, &mbstatlen, 0, 0) < 0) {
142 warn("sysctl: retrieving mbstat");
146 if (sysctlbyname("kern.ipc.mbtypes", mbtypes, &mbtypeslen, NULL,
148 warn("sysctl: retrieving mbtypes");
152 name[2] = KIPC_NMBCLUSTERS;
153 nmbclen = sizeof(int);
154 if (sysctl(name, 3, &nmbclusters, &nmbclen, 0, 0) < 0) {
155 warn("sysctl: retrieving nmbclusters");
159 nmbuflen = sizeof(int);
160 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs, &nmbuflen, 0, 0) < 0) {
161 warn("sysctl: retrieving nmbufs");
167 #define MSIZE (mbstat.m_msize)
169 #define MCLBYTES (mbstat.m_mclbytes)
172 for (mp = mbtypenames; mp->mt_name; mp++)
173 totmbufs += mbtypes[mp->mt_type];
174 printf("%lu/%lu/%u mbufs in use (current/peak/max):\n", totmbufs,
175 mbstat.m_mbufs, nmbufs);
176 for (mp = mbtypenames; mp->mt_name; mp++)
177 if (mbtypes[mp->mt_type]) {
178 seen[mp->mt_type] = YES;
179 printf("\t%lu mbufs allocated to %s\n",
180 mbtypes[mp->mt_type], mp->mt_name);
183 for (i = 0; i < nmbtypes; i++)
184 if (!seen[i] && mbtypes[i]) {
185 printf("\t%lu mbufs allocated to <mbuf type %d>\n",
188 printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n",
189 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters,
191 totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
192 totpossible = nmbclusters * MCLBYTES + MSIZE * nmbufs;
193 printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n",
194 totmem / 1024, (totmem * 100) / totpossible);
195 printf("%lu requests for memory denied\n", mbstat.m_drops);
196 printf("%lu requests for memory delayed\n", mbstat.m_wait);
197 printf("%lu calls to protocol drain routines\n", mbstat.m_drain);