| | 1 | /* |
| | 2 | * Copyright (c) 1983 Regents of the University of California. |
| | 3 | * All rights reserved. The Berkeley software License Agreement |
| | 4 | * specifies the terms and conditions for redistribution. |
| | 5 | */ |
| | 6 | |
| | 7 | #ifndef lint |
| | 8 | static char sccsid[] = "@(#)mbuf.c 5.2 (Berkeley) %G%"; |
| | 9 | #endif not lint |
| | 10 | |
| | 11 | #include <stdio.h> |
| | 12 | #include <sys/param.h> |
| | 13 | #include <sys/mbuf.h> |
| | 14 | #define YES 1 |
| | 15 | typedef int bool; |
| | 16 | |
| | 17 | struct mbstat mbstat; |
| | 18 | extern int kmem; |
| | 19 | |
| | 20 | static struct mbtypes { |
| | 21 | int mt_type; |
| | 22 | char *mt_name; |
| | 23 | } mbtypes[] = { |
| | 24 | { MT_DATA, "data" }, |
| | 25 | { MT_HEADER, "packet headers" }, |
| | 26 | { MT_SOCKET, "socket structures" }, |
| | 27 | { MT_PCB, "protocol control blocks" }, |
| | 28 | { MT_RTABLE, "routing table entries" }, |
| | 29 | { MT_HTABLE, "IMP host table entries" }, |
| | 30 | { MT_ATABLE, "address resolution tables" }, |
| | 31 | { MT_FTABLE, "fragment reassembly queue headers" }, |
| | 32 | { MT_SONAME, "socket names and addresses" }, |
| | 33 | { MT_ZOMBIE, "zombie process information" }, |
| | 34 | { MT_SOOPTS, "socket options" }, |
| | 35 | { MT_RIGHTS, "access rights" }, |
| | 36 | { MT_IFADDR, "interface addresses" }, |
| | 37 | { 0, 0 } |
| | 38 | }; |
| | 39 | |
| | 40 | int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); |
| | 41 | bool seen[256]; /* "have we seen this type yet?" */ |
| | 42 | |
| | 43 | /* |
| | 44 | * Print mbuf statistics. |
| | 45 | */ |
| | 46 | mbpr(mbaddr) |
| | 47 | off_t mbaddr; |
| | 48 | { |
| | 49 | register int totmem, totfree, totmbufs; |
| | 50 | register int i; |
| | 51 | register struct mbtypes *mp; |
| | 52 | |
| | 53 | if (nmbtypes != 256) { |
| | 54 | fprintf(stderr, "unexpected change to mbstat; check source\n"); |
| | 55 | return; |
| | 56 | } |
| | 57 | if (mbaddr == 0) { |
| | 58 | printf("mbstat: symbol not in namelist\n"); |
| | 59 | return; |
| | 60 | } |
| | 61 | klseek(kmem, mbaddr, 0); |
| | 62 | if (read(kmem, (char *)&mbstat, sizeof (mbstat)) != sizeof (mbstat)) { |
| | 63 | printf("mbstat: bad read\n"); |
| | 64 | return; |
| | 65 | } |
| | 66 | printf("%d/%d mbufs in use:\n", |
| | 67 | mbstat.m_mbufs - mbstat.m_mtypes[MT_FREE], mbstat.m_mbufs); |
| | 68 | totmbufs = 0; |
| | 69 | for (mp = mbtypes; mp->mt_name; mp++) |
| | 70 | if (mbstat.m_mtypes[mp->mt_type]) { |
| | 71 | seen[mp->mt_type] = YES; |
| | 72 | printf("\t%d mbufs allocated to %s\n", |
| | 73 | mbstat.m_mtypes[mp->mt_type], mp->mt_name); |
| | 74 | totmbufs += mbstat.m_mtypes[mp->mt_type]; |
| | 75 | } |
| | 76 | seen[MT_FREE] = YES; |
| | 77 | for (i = 0; i < nmbtypes; i++) |
| | 78 | if (!seen[i] && mbstat.m_mtypes[i]) { |
| | 79 | printf("\t%d mbufs allocated to <mbuf type %d>\n", |
| | 80 | mbstat.m_mtypes[i], i); |
| | 81 | totmbufs += mbstat.m_mtypes[i]; |
| | 82 | } |
| | 83 | if (totmbufs != mbstat.m_mbufs - mbstat.m_mtypes[MT_FREE]) |
| | 84 | printf("*** %d mbufs missing ***\n", |
| | 85 | (mbstat.m_mbufs - mbstat.m_mtypes[MT_FREE]) - totmbufs); |
| | 86 | printf("%d/%d mapped pages in use\n", |
| | 87 | mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters); |
| | 88 | totmem = mbstat.m_mbufs * MSIZE + mbstat.m_clusters * CLBYTES; |
| | 89 | totfree = mbstat.m_mtypes[MT_FREE]*MSIZE + mbstat.m_clfree * CLBYTES; |
| | 90 | printf("%d Kbytes allocated to network (%d%% in use)\n", |
| | 91 | totmem / 1024, (totmem - totfree) * 100 / totmem); |
| | 92 | printf("%d requests for memory denied\n", mbstat.m_drops); |
| | 93 | } |
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