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21c58b8d40
freebsd/usr.bin/netstat/if.c
John Polstra 3cfac2c58d Fix bug: "netstat -si" prints interface information, but the header 
line is missing.  This apparently was broken in revision 1.31 of
"if.c".

Submitted by:	Maxime Henrion <mhenrion@cybercable.fr>
2000-07-28 04:05:04 +00:00

591 lines
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/*
* 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[] = "@(#)if.c 8.3 (Berkeley) 4/28/95";
*/
static const char rcsid[] =
"$FreeBSD$";
#endif /* not lint */
#include <sys/types.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/time.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/bridge.h>
#include <net/ethernet.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#ifdef NS
#include <netns/ns.h>
#include <netns/ns_if.h>
#endif
#ifdef ISO
#include <netiso/iso.h>
#include <netiso/iso_var.h>
#endif
#include <arpa/inet.h>
#include <signal.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
#define YES 1
#define NO 0
static void sidewaysintpr __P((u_int, u_long));
static void catchalarm __P((int));
#ifdef INET6
char *netname6 __P((struct sockaddr_in6 *, struct in6_addr *));
static char ntop_buf[INET6_ADDRSTRLEN]; /* for inet_ntop() */
static int bdg_done;
#endif
void
bdg_stats(u_long dummy, char *name) /* print bridge statistics */
{
int i;
size_t slen ;
struct bdg_stats s ;
int mib[4] ;
slen = sizeof(s);
mib[0] = CTL_NET ;
mib[1] = PF_LINK ;
mib[2] = IFT_ETHER ;
mib[3] = PF_BDG ;
if (sysctl(mib,4, &s,&slen,NULL,0)==-1)
return ; /* no bridging */
#ifdef INET6
if (bdg_done != 0)
return;
else
bdg_done = 1;
#endif
printf("-- Bridging statistics (%s) --\n", name) ;
printf(
"Name In Out Forward Drop Bcast Mcast Local Unknown\n");
for (i = 0 ; i < 16 ; i++) {
if (s.s[i].name[0])
printf("%-6s %9ld%9ld%9ld%9ld%9ld%9ld%9ld%9ld\n",
s.s[i].name,
s.s[i].p_in[(int)BDG_IN],
s.s[i].p_in[(int)BDG_OUT],
s.s[i].p_in[(int)BDG_FORWARD],
s.s[i].p_in[(int)BDG_DROP],
s.s[i].p_in[(int)BDG_BCAST],
s.s[i].p_in[(int)BDG_MCAST],
s.s[i].p_in[(int)BDG_LOCAL],
s.s[i].p_in[(int)BDG_UNKNOWN] );
}
}
/*
* Print a description of the network interfaces.
*/
void
intpr(interval, ifnetaddr, pfunc)
int interval;
u_long ifnetaddr;
void (*pfunc)(char *);
{
struct ifnet ifnet;
struct ifnethead ifnethead;
union {
struct ifaddr ifa;
struct in_ifaddr in;
#ifdef INET6
struct in6_ifaddr in6;
#endif
struct ipx_ifaddr ipx;
#ifdef NS
struct ns_ifaddr ns;
#endif
#ifdef ISO
struct iso_ifaddr iso;
#endif
} ifaddr;
u_long ifaddraddr;
u_long ifaddrfound;
u_long ifnetfound;
struct sockaddr *sa = NULL;
char name[32], tname[16];
if (ifnetaddr == 0) {
printf("ifnet: symbol not defined\n");
return;
}
if (interval) {
sidewaysintpr((unsigned)interval, ifnetaddr);
return;
}
if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead))
return;
ifnetaddr = (u_long)ifnethead.tqh_first;
if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet))
return;
if ((!sflag || iflag) && !pflag) {
printf("%-5.5s %-5.5s %-13.13s %-15.15s %8.8s %5.5s",
"Name", "Mtu", "Network", "Address", "Ipkts", "Ierrs");
if (bflag)
printf(" %10.10s","Ibytes");
printf(" %8.8s %5.5s", "Opkts", "Oerrs");
if (bflag)
printf(" %10.10s","Obytes");
printf(" %5s", "Coll");
if (tflag)
printf(" %s", "Time");
if (dflag)
printf(" %s", "Drop");
putchar('\n');
}
ifaddraddr = 0;
while (ifnetaddr || ifaddraddr) {
struct sockaddr_in *sin;
#ifdef INET6
struct sockaddr_in6 *sin6;
#endif
register char *cp;
int n, m;
if (ifaddraddr == 0) {
ifnetfound = ifnetaddr;
if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) ||
kread((u_long)ifnet.if_name, tname, 16))
return;
tname[15] = '\0';
ifnetaddr = (u_long)ifnet.if_link.tqe_next;
snprintf(name, 32, "%s%d", tname, ifnet.if_unit);
if (interface != 0 && (strcmp(name, interface) != 0))
continue;
cp = index(name, '\0');
if (pfunc) {
(*pfunc)(name);
continue;
}
if ((ifnet.if_flags&IFF_UP) == 0)
*cp++ = '*';
*cp = '\0';
ifaddraddr = (u_long)ifnet.if_addrhead.tqh_first;
}
printf("%-5.5s %-5lu ", name, ifnet.if_mtu);
ifaddrfound = ifaddraddr;
if (ifaddraddr == 0) {
printf("%-13.13s ", "none");
printf("%-15.15s ", "none");
} else {
if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)) {
ifaddraddr = 0;
continue;
}
#define CP(x) ((char *)(x))
cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
CP(&ifaddr);
sa = (struct sockaddr *)cp;
switch (sa->sa_family) {
case AF_UNSPEC:
printf("%-13.13s ", "none");
printf("%-15.15s ", "none");
break;
case AF_INET:
sin = (struct sockaddr_in *)sa;
#ifdef notdef
/* can't use inet_makeaddr because kernel
* keeps nets unshifted.
*/
in = inet_makeaddr(ifaddr.in.ia_subnet,
INADDR_ANY);
printf("%-13.13s ", netname(in.s_addr,
ifaddr.in.ia_subnetmask));
#else
printf("%-13.13s ",
netname(htonl(ifaddr.in.ia_subnet),
ifaddr.in.ia_subnetmask));
#endif
printf("%-15.15s ",
routename(sin->sin_addr.s_addr));
break;
#ifdef INET6
case AF_INET6:
sin6 = (struct sockaddr_in6 *)sa;
printf("%-11.11s ",
netname6(&ifaddr.in6.ia_addr,
&ifaddr.in6.ia_prefixmask.sin6_addr));
printf("%-17.17s ",
(char *)inet_ntop(AF_INET6,
&sin6->sin6_addr,
ntop_buf, sizeof(ntop_buf)));
break;
#endif /*INET6*/
case AF_IPX:
{
struct sockaddr_ipx *sipx =
(struct sockaddr_ipx *)sa;
u_long net;
char netnum[10];
*(union ipx_net *) &net = sipx->sipx_addr.x_net;
sprintf(netnum, "%lx", (u_long)ntohl(net));
printf("ipx:%-8s ", netnum);
/* printf("ipx:%-8s ", netname(net, 0L)); */
printf("%-15s ",
ipx_phost((struct sockaddr *)sipx));
}
break;
case AF_APPLETALK:
printf("atalk:%-12.12s ",atalk_print(sa,0x10) );
printf("%-9.9s ",atalk_print(sa,0x0b) );
break;
#ifdef NS
case AF_NS:
{
struct sockaddr_ns *sns =
(struct sockaddr_ns *)sa;
u_long net;
char netnum[10];
*(union ns_net *) &net = sns->sns_addr.x_net;
sprintf(netnum, "%lxH", ntohl(net));
upHex(netnum);
printf("ns:%-8s ", netnum);
printf("%-15s ",
ns_phost((struct sockaddr *)sns));
}
break;
#endif
case AF_LINK:
{
struct sockaddr_dl *sdl =
(struct sockaddr_dl *)sa;
char linknum[10];
cp = (char *)LLADDR(sdl);
n = sdl->sdl_alen;
sprintf(linknum, "<Link#%d>", sdl->sdl_index);
m = printf("%-11.11s ", linknum);
}
goto hexprint;
default:
m = printf("(%d)", sa->sa_family);
for (cp = sa->sa_len + (char *)sa;
--cp > sa->sa_data && (*cp == 0);) {}
n = cp - sa->sa_data + 1;
cp = sa->sa_data;
hexprint:
while (--n >= 0)
m += printf("%02x%c", *cp++ & 0xff,
n > 0 ? ':' : ' ');
m = 30 - m;
while (m-- > 0)
putchar(' ');
break;
}
ifaddraddr = (u_long)ifaddr.ifa.ifa_link.tqe_next;
}
printf("%8lu %5lu ",
ifnet.if_ipackets, ifnet.if_ierrors);
if (bflag)
printf("%10lu ", ifnet.if_ibytes);
printf("%8lu %5lu ",
ifnet.if_opackets, ifnet.if_oerrors);
if (bflag)
printf("%10lu ", ifnet.if_obytes);
printf("%5lu", ifnet.if_collisions);
if (tflag)
printf(" %3d", ifnet.if_timer);
if (dflag)
printf(" %3d", ifnet.if_snd.ifq_drops);
putchar('\n');
if (aflag && ifaddrfound) {
/*
* Print family's multicast addresses
*/
u_long multiaddr;
struct ifmultiaddr ifma;
union {
struct sockaddr sa;
struct sockaddr_in in;
#ifdef INET6
struct sockaddr_in6 in6;
#endif /* INET6 */
struct sockaddr_dl dl;
} msa;
const char *fmt;
for(multiaddr = (u_long)ifnet.if_multiaddrs.lh_first;
multiaddr;
multiaddr = (u_long)ifma.ifma_link.le_next) {
if (kread(multiaddr, (char *)&ifma,
sizeof ifma))
break;
if (kread((u_long)ifma.ifma_addr, (char *)&msa,
sizeof msa))
break;
if (msa.sa.sa_family != sa->sa_family)
continue;
fmt = 0;
switch (msa.sa.sa_family) {
case AF_INET:
fmt = routename(msa.in.sin_addr.s_addr);
break;
#ifdef INET6
case AF_INET6:
printf("%23s %-19.19s(refs: %d)\n", "",
inet_ntop(AF_INET6,
&msa.in6.sin6_addr,
ntop_buf,
sizeof(ntop_buf)),
ifma.ifma_refcount);
#endif /* INET6 */
case AF_LINK:
switch (ifnet.if_type) {
case IFT_ETHER:
case IFT_FDDI:
fmt = ether_ntoa(
(struct ether_addr *)
LLADDR(&msa.dl));
break;
}
break;
}
if (fmt)
printf("%23s %s\n", "", fmt);
}
}
}
}
#define MAXIF 10
struct iftot {
char ift_name[16]; /* interface name */
u_long ift_ip; /* input packets */
u_long ift_ie; /* input errors */
u_long ift_op; /* output packets */
u_long ift_oe; /* output errors */
u_long ift_co; /* collisions */
u_int ift_dr; /* drops */
u_long ift_ib; /* input bytes */
u_long ift_ob; /* output bytes */
} iftot[MAXIF];
u_char signalled; /* set if alarm goes off "early" */
/*
* Print a running summary of interface statistics.
* Repeat display every interval seconds, showing statistics
* collected over that interval. Assumes that interval is non-zero.
* First line printed at top of screen is always cumulative.
* XXX - should be rewritten to use ifmib(4).
*/
static void
sidewaysintpr(interval, off)
unsigned interval;
u_long off;
{
struct ifnet ifnet;
u_long firstifnet;
struct ifnethead ifnethead;
register struct iftot *ip, *total;
register int line;
struct iftot *lastif, *sum, *interesting;
int oldmask, first;
u_long interesting_off;
if (kread(off, (char *)&ifnethead, sizeof ifnethead))
return;
firstifnet = (u_long)ifnethead.tqh_first;
lastif = iftot;
sum = iftot + MAXIF - 1;
total = sum - 1;
interesting = NULL;
interesting_off = 0;
for (off = firstifnet, ip = iftot; off;) {
char name[16], tname[16];
if (kread(off, (char *)&ifnet, sizeof ifnet))
break;
if (kread((u_long)ifnet.if_name, tname, 16))
break;
tname[15] = '\0';
snprintf(name, 16, "%s%d", tname, ifnet.if_unit);
if (interface && strcmp(name, interface) == 0) {
interesting = ip;
interesting_off = off;
}
snprintf(ip->ift_name, 16, "(%s)", name);;
ip++;
if (ip >= iftot + MAXIF - 2)
break;
off = (u_long) ifnet.if_link.tqe_next;
}
lastif = ip;
(void)signal(SIGALRM, catchalarm);
signalled = NO;
(void)alarm(interval);
for (ip = iftot; ip < iftot + MAXIF; ip++) {
ip->ift_ip = 0;
ip->ift_ie = 0;
ip->ift_ib = 0;
ip->ift_op = 0;
ip->ift_oe = 0;
ip->ift_ob = 0;
ip->ift_co = 0;
ip->ift_dr = 0;
}
first = 1;
banner:
printf("%17s %14s %16s", "input",
interesting ? interesting->ift_name : "(Total)", "output");
putchar('\n');
printf("%10s %5s %10s %10s %5s %10s %5s",
"packets", "errs", "bytes", "packets", "errs", "bytes", "colls");
if (dflag)
printf(" %5.5s", "drops");
putchar('\n');
fflush(stdout);
line = 0;
loop:
if (interesting != NULL) {
ip = interesting;
if (kread(interesting_off, (char *)&ifnet, sizeof ifnet)) {
printf("???\n");
exit(1);
};
if (!first) {
printf("%10lu %5lu %10lu %10lu %5lu %10lu %5lu",
ifnet.if_ipackets - ip->ift_ip,
ifnet.if_ierrors - ip->ift_ie,
ifnet.if_ibytes - ip->ift_ib,
ifnet.if_opackets - ip->ift_op,
ifnet.if_oerrors - ip->ift_oe,
ifnet.if_obytes - ip->ift_ob,
ifnet.if_collisions - ip->ift_co);
if (dflag)
printf(" %5u", ifnet.if_snd.ifq_drops - ip->ift_dr);
}
ip->ift_ip = ifnet.if_ipackets;
ip->ift_ie = ifnet.if_ierrors;
ip->ift_ib = ifnet.if_ibytes;
ip->ift_op = ifnet.if_opackets;
ip->ift_oe = ifnet.if_oerrors;
ip->ift_ob = ifnet.if_obytes;
ip->ift_co = ifnet.if_collisions;
ip->ift_dr = ifnet.if_snd.ifq_drops;
} else {
sum->ift_ip = 0;
sum->ift_ie = 0;
sum->ift_ib = 0;
sum->ift_op = 0;
sum->ift_oe = 0;
sum->ift_ob = 0;
sum->ift_co = 0;
sum->ift_dr = 0;
for (off = firstifnet, ip = iftot; off && ip < lastif; ip++) {
if (kread(off, (char *)&ifnet, sizeof ifnet)) {
off = 0;
continue;
}
sum->ift_ip += ifnet.if_ipackets;
sum->ift_ie += ifnet.if_ierrors;
sum->ift_ib += ifnet.if_ibytes;
sum->ift_op += ifnet.if_opackets;
sum->ift_oe += ifnet.if_oerrors;
sum->ift_ob += ifnet.if_obytes;
sum->ift_co += ifnet.if_collisions;
sum->ift_dr += ifnet.if_snd.ifq_drops;
off = (u_long) ifnet.if_link.tqe_next;
}
if (!first) {
printf("%10lu %5lu %10lu %10lu %5lu %10lu %5lu",
sum->ift_ip - total->ift_ip,
sum->ift_ie - total->ift_ie,
sum->ift_ib - total->ift_ib,
sum->ift_op - total->ift_op,
sum->ift_oe - total->ift_oe,
sum->ift_ob - total->ift_ob,
sum->ift_co - total->ift_co);
if (dflag)
printf(" %5u", sum->ift_dr - total->ift_dr);
}
*total = *sum;
}
if (!first)
putchar('\n');
fflush(stdout);
oldmask = sigblock(sigmask(SIGALRM));
if (! signalled) {
sigpause(0);
}
sigsetmask(oldmask);
signalled = NO;
(void)alarm(interval);
line++;
first = 0;
if (line == 21)
goto banner;
else
goto loop;
/*NOTREACHED*/
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
static void
catchalarm(signo)
int signo;
{
signalled = YES;
}
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