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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 1.5 2005/08/04 17:31:23 drhodus 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" },
60 { MT_SONAME
, "socket names and addresses" },
65 * Print mbuf statistics.
68 mbpr(u_long mbaddr
, u_long mbtaddr
, u_long nmbcaddr
, u_long nmbufaddr
)
70 u_long totmem
, totpossible
, totmbufs
;
73 struct mbtypenames
*mp
;
74 int name
[3], nmbclusters
, nmbufs
, nmbtypes
;
75 size_t nmbclen
, nmbuflen
, mbstatlen
, mbtypeslen
;
77 bool *seen
; /* "have we seen this type yet?" */
84 * We can't kread() mbtypeslen from a core image so we'll
85 * bogusly assume it's the same as in the running kernel.
87 if (sysctlbyname("kern.ipc.mbtypes", NULL
, &mbtypeslen
, NULL
, 0) < 0) {
88 warn("sysctl: retrieving mbtypes length");
91 if ((mbtypes
= malloc(mbtypeslen
)) == NULL
) {
92 warn("malloc: %lu bytes for mbtypes", (u_long
)mbtypeslen
);
96 nmbtypes
= mbtypeslen
/ sizeof(*mbtypes
);
97 if ((seen
= calloc(nmbtypes
, sizeof(*seen
))) == NULL
) {
103 if (kread(mbaddr
, (char *)&mbstat
, sizeof mbstat
))
105 if (kread(mbtaddr
, (char *)mbtypes
, mbtypeslen
))
107 if (kread(nmbcaddr
, (char *)&nmbclusters
, sizeof(int)))
109 if (kread(nmbufaddr
, (char *)&nmbufs
, sizeof(int)))
114 name
[2] = KIPC_MBSTAT
;
115 mbstatlen
= sizeof mbstat
;
116 if (sysctl(name
, 3, &mbstat
, &mbstatlen
, 0, 0) < 0) {
117 warn("sysctl: retrieving mbstat");
121 if (sysctlbyname("kern.ipc.mbtypes", mbtypes
, &mbtypeslen
, NULL
,
123 warn("sysctl: retrieving mbtypes");
127 name
[2] = KIPC_NMBCLUSTERS
;
128 nmbclen
= sizeof(int);
129 if (sysctl(name
, 3, &nmbclusters
, &nmbclen
, 0, 0) < 0) {
130 warn("sysctl: retrieving nmbclusters");
134 nmbuflen
= sizeof(int);
135 if (sysctlbyname("kern.ipc.nmbufs", &nmbufs
, &nmbuflen
, 0, 0) < 0) {
136 warn("sysctl: retrieving nmbufs");
142 #define MSIZE (mbstat.m_msize)
144 #define MCLBYTES (mbstat.m_mclbytes)
147 for (mp
= mbtypenames
; mp
->mt_name
; mp
++)
148 totmbufs
+= mbtypes
[mp
->mt_type
];
149 printf("%lu/%lu/%u mbufs in use (current/peak/max):\n", totmbufs
,
150 mbstat
.m_mbufs
, nmbufs
);
151 for (mp
= mbtypenames
; mp
->mt_name
; mp
++)
152 if (mbtypes
[mp
->mt_type
]) {
153 seen
[mp
->mt_type
] = YES
;
154 printf("\t%lu mbufs allocated to %s\n",
155 mbtypes
[mp
->mt_type
], mp
->mt_name
);
158 for (i
= 0; i
< nmbtypes
; i
++)
159 if (!seen
[i
] && mbtypes
[i
]) {
160 printf("\t%lu mbufs allocated to <mbuf type %d>\n",
163 printf("%lu/%lu/%u mbuf clusters in use (current/peak/max)\n",
164 mbstat
.m_clusters
- mbstat
.m_clfree
, mbstat
.m_clusters
,
166 totmem
= mbstat
.m_mbufs
* MSIZE
+ mbstat
.m_clusters
* MCLBYTES
;
167 totpossible
= nmbclusters
* MCLBYTES
+ MSIZE
* nmbufs
;
168 printf("%lu Kbytes allocated to network (%lu%% of mb_map in use)\n",
169 totmem
/ 1024, (totmem
* 100) / totpossible
);
170 printf("%lu requests for memory denied\n", mbstat
.m_drops
);
171 printf("%lu requests for memory delayed\n", mbstat
.m_wait
);
172 printf("%lu calls to protocol drain routines\n", mbstat
.m_drain
);