/* * Copyright (c) 1983, 1988 Regents of the University of California. * All rights reserved. * * Redistribution and use in source and binary forms are permitted provided * that: (1) source distributions retain this entire copyright notice and * comment, and (2) distributions including binaries display the following * acknowledgement: ``This product includes software developed by the * University of California, Berkeley and its contributors'' in the * documentation or other materials provided with the distribution and in * all advertising materials mentioning features or use of this software. * Neither the name of the University nor the names of its contributors may * be used to endorse or promote products derived from this software without * specific prior written permission. * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED * WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. */ #ifndef lint static char sccsid[] = "@(#)mbuf.c 5.9 (Berkeley) 6/18/90"; #endif /* not lint */ #include <stdio.h> #include <sys/param.h> #include <sys/mbuf.h> #define YES 1 typedef int bool; struct mbstat mbstat; static struct mbtypes { int mt_type; char *mt_name; } mbtypes[] = { { MT_DATA, "data" }, { MT_OOBDATA, "oob data" }, { MT_CONTROL, "ancillary data" }, { MT_HEADER, "packet headers" }, { MT_SOCKET, "socket structures" }, /* XXX */ { MT_PCB, "protocol control blocks" }, /* XXX */ { MT_RTABLE, "routing table entries" }, /* XXX */ { MT_HTABLE, "IMP host table entries" }, /* XXX */ { MT_ATABLE, "address resolution tables" }, { MT_FTABLE, "fragment reassembly queue headers" }, /* XXX */ { MT_SONAME, "socket names and addresses" }, { MT_SOOPTS, "socket options" }, { MT_RIGHTS, "access rights" }, { MT_IFADDR, "interface addresses" }, /* XXX */ { 0, 0 } }; int nmbtypes = sizeof(mbstat.m_mtypes) / sizeof(short); bool seen[256]; /* "have we seen this type yet?" */ /* * Print mbuf statistics. */ mbpr(mbaddr) off_t mbaddr; { register int totmem, totfree, totmbufs; register int i; register struct mbtypes *mp; if (nmbtypes != 256) { fprintf(stderr, "unexpected change to mbstat; check source\n"); return; } if (mbaddr == 0) { printf("mbstat: symbol not in namelist\n"); return; } if (kvm_read(mbaddr, (char *)&mbstat, sizeof (mbstat)) != sizeof (mbstat)) { printf("mbstat: bad read\n"); return; } totmbufs = 0; for (mp = mbtypes; mp->mt_name; mp++) totmbufs += mbstat.m_mtypes[mp->mt_type]; printf("%u mbufs in use:\n", totmbufs); for (mp = mbtypes; mp->mt_name; mp++) if (mbstat.m_mtypes[mp->mt_type]) { seen[mp->mt_type] = YES; printf("\t%u mbufs allocated to %s\n", mbstat.m_mtypes[mp->mt_type], mp->mt_name); } seen[MT_FREE] = YES; for (i = 0; i < nmbtypes; i++) if (!seen[i] && mbstat.m_mtypes[i]) { printf("\t%u mbufs allocated to <mbuf type %d>\n", mbstat.m_mtypes[i], i); } printf("%u/%u mapped pages in use\n", mbstat.m_clusters - mbstat.m_clfree, mbstat.m_clusters); totmem = totmbufs * MSIZE + mbstat.m_clusters * CLBYTES; totfree = mbstat.m_clfree * CLBYTES; printf("%u Kbytes allocated to network (%d%% in use)\n", totmem / 1024, (totmem - totfree) * 100 / totmem); printf("%u requests for memory denied\n", mbstat.m_drops); printf("%u requests for memory delayed\n", mbstat.m_wait); printf("%u calls to protocol drain routines\n", mbstat.m_drain); }