1 /*
2 * Copyright (c) 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * %sccs.include.redist.c%
6 */
7
8 #ifndef lint
9 static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 06/06/93";
10 #endif /* not lint */
11
12 #include <sys/param.h>
13 #include <sys/protosw.h>
14 #include <sys/socket.h>
15 #include <sys/mbuf.h>
16
17 #include <stdio.h>
18 #include "netstat.h"
19
20 #define YES 1
21 typedef int bool;
22
23 struct mbstat mbstat;
24
25 static struct mbtypes {
26 int mt_type;
27 char *mt_name;
28 } mbtypes[] = {
29 { MT_DATA, "data" },
30 { MT_OOBDATA, "oob data" },
31 { MT_CONTROL, "ancillary data" },
32 { MT_HEADER, "packet headers" },
33 { MT_SOCKET, "socket structures" }, /* XXX */
34 { MT_PCB, "protocol control blocks" }, /* XXX */
35 { MT_RTABLE, "routing table entries" }, /* XXX */
36 { MT_HTABLE, "IMP host table entries" }, /* XXX */
37 { MT_ATABLE, "address resolution tables" },
38 { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */
39 { MT_SONAME, "socket names and addresses" },
40 { MT_SOOPTS, "socket options" },
41 { MT_RIGHTS, "access rights" },
42 { MT_IFADDR, "interface addresses" }, /* XXX */
43 { 0, 0 }
44 };
45
46 int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
47 bool seen[256]; /* "have we seen this type yet?" */
48
49 /*
50 * Print mbuf statistics.
51 */
52 void
mbpr(mbaddr)53 mbpr(mbaddr)
54 u_long mbaddr;
55 {
56 register int totmem, totfree, totmbufs;
57 register int i;
58 register struct mbtypes *mp;
59
60 if (nmbtypes != 256) {
61 fprintf(stderr,
62 "%s: unexpected change to mbstat; check source\n", prog);
63 return;
64 }
65 if (mbaddr == 0) {
66 fprintf(stderr, "%s: mbstat: symbol not in namelist\n", prog);
67 return;
68 }
69 if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat)))
70 return;
71 totmbufs = 0;
72 for (mp = mbtypes; mp->mt_name; mp++)
73 totmbufs += mbstat.m_mtypes[mp->mt_type];
74 printf("%u mbufs in use:\n", totmbufs);
75 for (mp = mbtypes; mp->mt_name; mp++)
76 if (mbstat.m_mtypes[mp->mt_type]) {
77 seen[mp->mt_type] = YES;
78 printf("\t%u mbufs allocated to %s\n",
79 mbstat.m_mtypes[mp->mt_type], mp->mt_name);
80 }
81 seen[MT_FREE] = YES;
82 for (i = 0; i < nmbtypes; i++)
83 if (!seen[i] && mbstat.m_mtypes[i]) {
84 printf("\t%u mbufs allocated to <mbuf type %d>\n",
85 mbstat.m_mtypes[i], i);
86 }
87 printf("%u/%u mapped pages in use\n",
88 mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
89 totmem = totmbufs * MSIZE + mbstat.m_clusters * MCLBYTES;
90 totfree = mbstat.m_clfree * MCLBYTES;
91 printf("%u Kbytes allocated to network (%d%% in use)\n",
92 totmem / 1024, (totmem - totfree) * 100 / totmem);
93 printf("%u requests for memory denied\n", mbstat.m_drops);
94 printf("%u requests for memory delayed\n", mbstat.m_wait);
95 printf("%u calls to protocol drain routines\n", mbstat.m_drain);
96 }
97