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Annotation of 43BSDReno/usr.bin/netstat/mbuf.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1983, 1988 Regents of the University of California.
        !             3:  * All rights reserved.
        !             4:  *
        !             5:  * Redistribution and use in source and binary forms are permitted provided
        !             6:  * that: (1) source distributions retain this entire copyright notice and
        !             7:  * comment, and (2) distributions including binaries display the following
        !             8:  * acknowledgement:  ``This product includes software developed by the
        !             9:  * University of California, Berkeley and its contributors'' in the
        !            10:  * documentation or other materials provided with the distribution and in
        !            11:  * all advertising materials mentioning features or use of this software.
        !            12:  * Neither the name of the University nor the names of its contributors may
        !            13:  * be used to endorse or promote products derived from this software without
        !            14:  * specific prior written permission.
        !            15:  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED
        !            16:  * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF
        !            17:  * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
        !            18:  */
        !            19: 
        !            20: #ifndef lint
        !            21: static char sccsid[] = "@(#)mbuf.c     5.9 (Berkeley) 6/18/90";
        !            22: #endif /* not lint */
        !            23: 
        !            24: #include <stdio.h>
        !            25: #include <sys/param.h>
        !            26: #include <sys/mbuf.h>
        !            27: #define        YES     1
        !            28: typedef int bool;
        !            29: 
        !            30: struct mbstat mbstat;
        !            31: 
        !            32: static struct mbtypes {
        !            33:        int     mt_type;
        !            34:        char    *mt_name;
        !            35: } mbtypes[] = {
        !            36:        { MT_DATA,      "data" },
        !            37:        { MT_OOBDATA,   "oob data" },
        !            38:        { MT_CONTROL,   "ancillary data" },
        !            39:        { MT_HEADER,    "packet headers" },
        !            40:        { MT_SOCKET,    "socket structures" },                  /* XXX */
        !            41:        { MT_PCB,       "protocol control blocks" },            /* XXX */
        !            42:        { MT_RTABLE,    "routing table entries" },              /* XXX */
        !            43:        { MT_HTABLE,    "IMP host table entries" },             /* XXX */
        !            44:        { MT_ATABLE,    "address resolution tables" },
        !            45:        { MT_FTABLE,    "fragment reassembly queue headers" },  /* XXX */
        !            46:        { MT_SONAME,    "socket names and addresses" },
        !            47:        { MT_SOOPTS,    "socket options" },
        !            48:        { MT_RIGHTS,    "access rights" },
        !            49:        { MT_IFADDR,    "interface addresses" },                /* XXX */
        !            50:        { 0, 0 }
        !            51: };
        !            52: 
        !            53: int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short);
        !            54: bool seen[256];                        /* "have we seen this type yet?" */
        !            55: 
        !            56: /*
        !            57:  * Print mbuf statistics.
        !            58:  */
        !            59: mbpr(mbaddr)
        !            60:        off_t mbaddr;
        !            61: {
        !            62:        register int totmem, totfree, totmbufs;
        !            63:        register int i;
        !            64:        register struct mbtypes *mp;
        !            65: 
        !            66:        if (nmbtypes != 256) {
        !            67:                fprintf(stderr, "unexpected change to mbstat; check source\n");
        !            68:                return;
        !            69:        }
        !            70:        if (mbaddr == 0) {
        !            71:                printf("mbstat: symbol not in namelist\n");
        !            72:                return;
        !            73:        }
        !            74:        if (kvm_read(mbaddr, (char *)&mbstat, sizeof (mbstat))
        !            75:                                                != sizeof (mbstat)) {
        !            76:                printf("mbstat: bad read\n");
        !            77:                return;
        !            78:        }
        !            79:        totmbufs = 0;
        !            80:        for (mp = mbtypes; mp->mt_name; mp++)
        !            81:                totmbufs += mbstat.m_mtypes[mp->mt_type];
        !            82:        printf("%u mbufs in use:\n", totmbufs);
        !            83:        for (mp = mbtypes; mp->mt_name; mp++)
        !            84:                if (mbstat.m_mtypes[mp->mt_type]) {
        !            85:                        seen[mp->mt_type] = YES;
        !            86:                        printf("\t%u mbufs allocated to %s\n",
        !            87:                            mbstat.m_mtypes[mp->mt_type], mp->mt_name);
        !            88:                }
        !            89:        seen[MT_FREE] = YES;
        !            90:        for (i = 0; i < nmbtypes; i++)
        !            91:                if (!seen[i] && mbstat.m_mtypes[i]) {
        !            92:                        printf("\t%u mbufs allocated to <mbuf type %d>\n",
        !            93:                            mbstat.m_mtypes[i], i);
        !            94:                }
        !            95:        printf("%u/%u mapped pages in use\n",
        !            96:                mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters);
        !            97:        totmem = totmbufs * MSIZE + mbstat.m_clusters * CLBYTES;
        !            98:        totfree = mbstat.m_clfree * CLBYTES;
        !            99:        printf("%u Kbytes allocated to network (%d%% in use)\n",
        !           100:                totmem / 1024, (totmem - totfree) * 100 / totmem);
        !           101:        printf("%u requests for memory denied\n", mbstat.m_drops);
        !           102:        printf("%u requests for memory delayed\n", mbstat.m_wait);
        !           103:        printf("%u calls to protocol drain routines\n", mbstat.m_drain);
        !           104: }

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