422 lines
11 KiB
C
422 lines
11 KiB
C
/* $NetBSD: if.c,v 1.23 1997/04/07 06:58:18 mikel Exp $ */
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/*
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* Copyright (c) 1983, 1988, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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#if 0
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static char sccsid[] = "from: @(#)if.c 8.2 (Berkeley) 2/21/94";
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#else
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static char *rcsid = "$NetBSD: if.c,v 1.23 1997/04/07 06:58:18 mikel Exp $";
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#endif
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#endif /* not lint */
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#include <sys/types.h>
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#include <sys/protosw.h>
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#include <sys/socket.h>
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#include <net/if.h>
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#include <net/if_dl.h>
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#include <net/if_types.h>
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#include <netinet/in.h>
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#include <netinet/in_var.h>
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#include <netns/ns.h>
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#include <netns/ns_if.h>
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#include <netiso/iso.h>
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#include <netiso/iso_var.h>
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#include <arpa/inet.h>
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#include <signal.h>
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include "netstat.h"
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#define YES 1
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#define NO 0
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static void sidewaysintpr __P((u_int, u_long));
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static void catchalarm __P((int));
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/*
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* Print a description of the network interfaces.
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* NOTE: ifnetaddr is the location of the kernel global "ifnet",
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* which is a TAILQ_HEAD.
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*/
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void
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intpr(interval, ifnetaddr)
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int interval;
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u_long ifnetaddr;
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{
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struct ifnet ifnet;
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union {
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struct ifaddr ifa;
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struct in_ifaddr in;
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struct ns_ifaddr ns;
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struct iso_ifaddr iso;
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} ifaddr;
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u_long ifaddraddr;
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struct sockaddr *sa;
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struct ifnet_head ifhead; /* TAILQ_HEAD */
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char name[IFNAMSIZ];
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if (ifnetaddr == 0) {
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printf("ifnet: symbol not defined\n");
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return;
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}
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if (interval) {
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sidewaysintpr((unsigned)interval, ifnetaddr);
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return;
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}
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/*
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* Find the pointer to the first ifnet structure. Replace
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* the pointer to the TAILQ_HEAD with the actual pointer
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* to the first list element.
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*/
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if (kread(ifnetaddr, (char *)&ifhead, sizeof ifhead))
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return;
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ifnetaddr = (u_long)ifhead.tqh_first;
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printf("%-5.5s %-5.5s %-13.13s %-17.17s %8.8s %5.5s %8.8s %5.5s",
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"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs",
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"Opkts", "Oerrs");
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printf(" %5s", "Coll");
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if (tflag)
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printf(" %s", "Time");
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if (dflag)
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printf(" %s", "Drop");
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putchar('\n');
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ifaddraddr = 0;
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while (ifnetaddr || ifaddraddr) {
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struct sockaddr_in *sin;
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register char *cp;
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int n, m;
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if (ifaddraddr == 0) {
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if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
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return;
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bcopy(ifnet.if_xname, name, IFNAMSIZ);
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name[IFNAMSIZ - 1] = '\0'; /* sanity */
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ifnetaddr = (u_long)ifnet.if_list.tqe_next;
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if (interface != 0 && strcmp(name, interface) != 0)
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continue;
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cp = index(name, '\0');
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if ((ifnet.if_flags & IFF_UP) == 0)
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*cp++ = '*';
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*cp = '\0';
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ifaddraddr = (u_long)ifnet.if_addrlist.tqh_first;
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}
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printf("%-5.5s %-5ld ", name, ifnet.if_mtu);
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if (ifaddraddr == 0) {
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printf("%-13.13s ", "none");
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printf("%-17.17s ", "none");
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} else {
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char hexsep = '.'; /* for hexprint */
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const char *hexfmt = "%x%c"; /* for hexprint */
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if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
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ifaddraddr = 0;
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continue;
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}
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#define CP(x) ((char *)(x))
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cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
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CP(&ifaddr); sa = (struct sockaddr *)cp;
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switch (sa->sa_family) {
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case AF_UNSPEC:
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printf("%-13.13s ", "none");
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printf("%-17.17s ", "none");
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break;
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case AF_INET:
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sin = (struct sockaddr_in *)sa;
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#ifdef notdef
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/* can't use inet_makeaddr because kernel
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* keeps nets unshifted.
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*/
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in = inet_makeaddr(ifaddr.in.ia_subnet,
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INADDR_ANY);
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printf("%-13.13s ", netname(in.s_addr,
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ifaddr.in.ia_subnetmask));
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#else
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printf("%-13.13s ",
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netname(ifaddr.in.ia_subnet,
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ifaddr.in.ia_subnetmask));
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#endif
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printf("%-17.17s ",
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routename(sin->sin_addr.s_addr));
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if (aflag) {
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u_long multiaddr;
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struct in_multi inm;
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multiaddr = (u_long)ifaddr.in.ia_multiaddrs.lh_first;
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while (multiaddr != 0) {
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kread(multiaddr, (char *)&inm,
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sizeof inm);
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printf("\n%25s %-17.17s ", "",
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routename(inm.inm_addr.s_addr));
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multiaddr = (u_long)inm.inm_list.le_next;
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}
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}
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break;
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case AF_APPLETALK:
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printf("atalk:%-12.12s ",
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atalk_print(sa,0x10));
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printf("%-9.9s ", atalk_print(sa,0x0b));
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break;
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case AF_NS:
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{
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struct sockaddr_ns *sns =
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(struct sockaddr_ns *)sa;
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u_long net;
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char netnum[8];
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*(union ns_net *) &net = sns->sns_addr.x_net;
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sprintf(netnum, "%xH", (u_int32_t) ntohl(net));
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upHex(netnum);
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printf("ns:%-10s ", netnum);
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printf("%-17.17s ",
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ns_phost((struct sockaddr *)sns));
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}
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break;
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case AF_LINK:
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{
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struct sockaddr_dl *sdl =
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(struct sockaddr_dl *)sa;
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cp = (char *)LLADDR(sdl);
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if (sdl->sdl_type == IFT_FDDI
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|| sdl->sdl_type == IFT_ETHER)
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hexsep = ':', hexfmt = "%02x%c";
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n = sdl->sdl_alen;
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}
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m = printf("%-13.13s ", "<Link>");
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goto hexprint;
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default:
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m = printf("(%d)", sa->sa_family);
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for (cp = sa->sa_len + (char *)sa;
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--cp > sa->sa_data && (*cp == 0);) {}
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n = cp - sa->sa_data + 1;
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cp = sa->sa_data;
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hexprint:
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while (--n >= 0)
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m += printf(hexfmt, *cp++ & 0xff,
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n > 0 ? hexsep : ' ');
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m = 32 - m;
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while (m-- > 0)
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putchar(' ');
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break;
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}
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ifaddraddr = (u_long)ifaddr.ifa.ifa_list.tqe_next;
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}
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printf("%8ld %5ld %8ld %5ld %5ld",
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ifnet.if_ipackets, ifnet.if_ierrors,
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ifnet.if_opackets, ifnet.if_oerrors,
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ifnet.if_collisions);
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if (tflag)
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printf(" %3d", ifnet.if_timer);
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if (dflag)
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printf(" %3d", ifnet.if_snd.ifq_drops);
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putchar('\n');
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}
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}
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#define MAXIF 100
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struct iftot {
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char ift_name[IFNAMSIZ]; /* interface name */
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int ift_ip; /* input packets */
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int ift_ie; /* input errors */
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int ift_op; /* output packets */
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int ift_oe; /* output errors */
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int ift_co; /* collisions */
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int ift_dr; /* drops */
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} iftot[MAXIF];
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u_char signalled; /* set if alarm goes off "early" */
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/*
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* Print a running summary of interface statistics.
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* Repeat display every interval seconds, showing statistics
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* collected over that interval. Assumes that interval is non-zero.
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* First line printed at top of screen is always cumulative.
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*/
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static void
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sidewaysintpr(interval, off)
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unsigned interval;
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u_long off;
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{
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struct ifnet ifnet;
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u_long firstifnet;
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register struct iftot *ip, *total;
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register int line;
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struct iftot *lastif, *sum, *interesting;
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struct ifnet_head ifhead; /* TAILQ_HEAD */
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int oldmask;
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/*
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* Find the pointer to the first ifnet structure. Replace
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* the pointer to the TAILQ_HEAD with the actual pointer
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* to the first list element.
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*/
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if (kread(off, (char *)&ifhead, sizeof ifhead))
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return;
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firstifnet = (u_long)ifhead.tqh_first;
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lastif = iftot;
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sum = iftot + MAXIF - 1;
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total = sum - 1;
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interesting = (interface == NULL) ? iftot : NULL;
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for (off = firstifnet, ip = iftot; off;) {
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if (kread(off, (char *)&ifnet, sizeof ifnet))
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break;
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bzero(ip->ift_name, sizeof(ip->ift_name));
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snprintf(ip->ift_name, IFNAMSIZ, "(%s)", ifnet.if_xname);
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if (interface && strcmp(ifnet.if_xname, interface) == 0)
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interesting = ip;
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ip++;
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if (ip >= iftot + MAXIF - 2)
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break;
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off = (u_long)ifnet.if_list.tqe_next;
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}
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if (interesting == NULL) {
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fprintf(stderr, "%s: %s: unknown interface\n",
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__progname, interface);
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exit(1);
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}
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lastif = ip;
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(void)signal(SIGALRM, catchalarm);
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signalled = NO;
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(void)alarm(interval);
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banner:
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printf(" input %-6.6s output ", interesting->ift_name);
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if (lastif - iftot > 0) {
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if (dflag)
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printf(" ");
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printf(" input (Total) output");
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}
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for (ip = iftot; ip < iftot + MAXIF; ip++) {
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ip->ift_ip = 0;
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ip->ift_ie = 0;
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ip->ift_op = 0;
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ip->ift_oe = 0;
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ip->ift_co = 0;
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ip->ift_dr = 0;
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}
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putchar('\n');
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printf("%8.8s %5.5s %8.8s %5.5s %5.5s ",
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"packets", "errs", "packets", "errs", "colls");
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if (dflag)
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printf("%5.5s ", "drops");
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if (lastif - iftot > 0)
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printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
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"packets", "errs", "packets", "errs", "colls");
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if (dflag)
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printf(" %5.5s", "drops");
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putchar('\n');
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fflush(stdout);
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line = 0;
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loop:
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sum->ift_ip = 0;
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sum->ift_ie = 0;
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sum->ift_op = 0;
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sum->ift_oe = 0;
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sum->ift_co = 0;
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sum->ift_dr = 0;
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for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
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if (kread(off, (char *)&ifnet, sizeof ifnet)) {
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off = 0;
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continue;
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}
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if (ip == interesting) {
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printf("%8ld %5ld %8ld %5ld %5ld",
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ifnet.if_ipackets - ip->ift_ip,
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ifnet.if_ierrors - ip->ift_ie,
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ifnet.if_opackets - ip->ift_op,
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ifnet.if_oerrors - ip->ift_oe,
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ifnet.if_collisions - ip->ift_co);
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if (dflag)
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printf(" %5d",
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ifnet.if_snd.ifq_drops - ip->ift_dr);
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}
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ip->ift_ip = ifnet.if_ipackets;
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ip->ift_ie = ifnet.if_ierrors;
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ip->ift_op = ifnet.if_opackets;
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ip->ift_oe = ifnet.if_oerrors;
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ip->ift_co = ifnet.if_collisions;
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ip->ift_dr = ifnet.if_snd.ifq_drops;
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sum->ift_ip += ip->ift_ip;
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sum->ift_ie += ip->ift_ie;
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sum->ift_op += ip->ift_op;
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sum->ift_oe += ip->ift_oe;
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sum->ift_co += ip->ift_co;
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sum->ift_dr += ip->ift_dr;
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off = (u_long)ifnet.if_list.tqe_next;
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}
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if (lastif - iftot > 0) {
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printf(" %8d %5d %8d %5d %5d",
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sum->ift_ip - total->ift_ip,
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sum->ift_ie - total->ift_ie,
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sum->ift_op - total->ift_op,
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sum->ift_oe - total->ift_oe,
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sum->ift_co - total->ift_co);
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if (dflag)
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printf(" %5d", sum->ift_dr - total->ift_dr);
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}
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*total = *sum;
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putchar('\n');
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fflush(stdout);
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line++;
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oldmask = sigblock(sigmask(SIGALRM));
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if (! signalled) {
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sigpause(0);
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}
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sigsetmask(oldmask);
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signalled = NO;
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(void)alarm(interval);
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if (line == 21)
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goto banner;
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goto loop;
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/*NOTREACHED*/
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}
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/*
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* Called if an interval expires before sidewaysintpr has completed a loop.
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* Sets a flag to not wait for the alarm.
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*/
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static void
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catchalarm(signo)
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int signo;
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{
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signalled = YES;
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}
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