diff options
Diffstat (limited to 'usr.bin/netstat/mbuf.c')
| -rw-r--r-- | usr.bin/netstat/mbuf.c | 122 |
1 files changed, 122 insertions, 0 deletions
diff --git a/usr.bin/netstat/mbuf.c b/usr.bin/netstat/mbuf.c new file mode 100644 index 0000000..dd60a0e --- /dev/null +++ b/usr.bin/netstat/mbuf.c @@ -0,0 +1,122 @@ +/* + * Copyright (c) 1983, 1988, 1993 + * The Regents of the University of California. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by the University of + * California, Berkeley and its contributors. + * 4. 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 BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#ifndef lint +static char sccsid[] = "@(#)mbuf.c 8.1 (Berkeley) 6/6/93"; +#endif /* not lint */ + +#include <sys/param.h> +#include <sys/protosw.h> +#include <sys/socket.h> +#include <sys/mbuf.h> + +#include <stdio.h> +#include "netstat.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. + */ +void +mbpr(mbaddr) + u_long mbaddr; +{ + register int totmem, totfree, totmbufs; + register int i; + register struct mbtypes *mp; + + if (nmbtypes != 256) { + fprintf(stderr, + "%s: unexpected change to mbstat; check source\n", prog); + return; + } + if (mbaddr == 0) { + fprintf(stderr, "%s: mbstat: symbol not in namelist\n", prog); + return; + } + if (kread(mbaddr, (char *)&mbstat, sizeof (mbstat))) + 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 * MCLBYTES; + totfree = mbstat.m_clfree * MCLBYTES; + 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); +} |
