OpenBSD-4.6/usr.bin/netstat/if.c
/* $OpenBSD: if.c,v 1.60 2009/02/07 15:06:04 chl Exp $ */
/* $NetBSD: if.c,v 1.16.4.2 1996/06/07 21:46:46 thorpej Exp $ */
/*
* 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. 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.
*/
#include <sys/param.h>
#include <sys/types.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <net/if.h>
#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netinet/if_ether.h>
#include <arpa/inet.h>
#include <err.h>
#include <limits.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
static void print_addr(struct sockaddr *, struct sockaddr **, struct if_data *);
static void sidewaysintpr(u_int);
static void catchalarm(int);
static void get_rtaddrs(int, struct sockaddr *, struct sockaddr **);
static void fetchifs(void);
/*
* Print a description of the network interfaces.
* NOTE: ifnetaddr is the location of the kernel global "ifnet",
* which is a TAILQ_HEAD.
*/
void
intpr(int interval)
{
struct if_msghdr ifm;
int mib[6] = { CTL_NET, AF_ROUTE, 0, 0, NET_RT_IFLIST, 0 };
char name[IFNAMSIZ + 1]; /* + 1 for the '*' */
char *buf, *next, *lim, *cp;
struct rt_msghdr *rtm;
struct ifa_msghdr *ifam;
struct if_data *ifd;
struct sockaddr *sa, *rti_info[RTAX_MAX];
struct sockaddr_dl *sdl;
u_int64_t total = 0;
size_t len;
if (interval) {
sidewaysintpr((unsigned)interval);
return;
}
if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1)
err(1, "sysctl");
if ((buf = malloc(len)) == NULL)
err(1, NULL);
if (sysctl(mib, 6, buf, &len, NULL, 0) == -1)
err(1, "sysctl");
printf("%-7.7s %-5.5s %-11.11s %-17.17s ",
"Name", "Mtu", "Network", "Address");
if (bflag)
printf("%10.10s %10.10s", "Ibytes", "Obytes");
else
printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
"Ipkts", "Ierrs", "Opkts", "Oerrs", "Colls");
if (tflag)
printf(" %s", "Time");
if (dflag)
printf(" %s", "Drop");
putchar('\n');
lim = buf + len;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
if (rtm->rtm_version != RTM_VERSION)
continue;
switch (rtm->rtm_type) {
case RTM_IFINFO:
total = 0;
bcopy(next, &ifm, sizeof ifm);
ifd = &ifm.ifm_data;
sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
get_rtaddrs(ifm.ifm_addrs, sa, rti_info);
sdl = (struct sockaddr_dl *)rti_info[RTAX_IFP];
if (sdl == NULL || sdl->sdl_family != AF_LINK)
continue;
bzero(name, sizeof(name));
if (sdl->sdl_nlen >= IFNAMSIZ)
memcpy(name, sdl->sdl_data, IFNAMSIZ - 1);
else if (sdl->sdl_nlen > 0)
memcpy(name, sdl->sdl_data, sdl->sdl_nlen);
if (interface != 0 && strcmp(name, interface) != 0)
continue;
/* mark inactive interfaces with a '*' */
cp = strchr(name, '\0');
if ((ifm.ifm_flags & IFF_UP) == 0)
*cp++ = '*';
*cp = '\0';
if (qflag) {
total = ifd->ifi_ibytes + ifd->ifi_obytes +
ifd->ifi_ipackets + ifd->ifi_ierrors +
ifd->ifi_opackets + ifd->ifi_oerrors +
ifd->ifi_collisions;
if (tflag)
total += 0; // XXX ifnet.if_timer;
if (dflag)
total += 0; // XXX ifnet.if_snd.ifq_drops;
if (total == 0)
continue;
}
printf("%-7s %-5ld ", name, ifd->ifi_mtu);
print_addr(rti_info[RTAX_IFP], rti_info, ifd);
break;
case RTM_NEWADDR:
if (qflag && total == 0)
continue;
if (interface != 0 && strcmp(name, interface) != 0)
continue;
ifam = (struct ifa_msghdr *)next;
if ((ifam->ifam_addrs & (RTA_NETMASK | RTA_IFA |
RTA_BRD)) == 0)
break;
sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
get_rtaddrs(ifam->ifam_addrs, sa, rti_info);
printf("%-7s %-5ld ", name, ifd->ifi_mtu);
print_addr(rti_info[RTAX_IFA], rti_info, ifd);
break;
}
}
free(buf);
}
static void
print_addr(struct sockaddr *sa, struct sockaddr **rtinfo, struct if_data *ifd)
{
struct sockaddr_dl *sdl;
struct sockaddr_in *sin;
struct sockaddr_in6 *sin6;
char *cp;
int m, n;
switch (sa->sa_family) {
case AF_UNSPEC:
printf("%-11.11s ", "none");
printf("%-17.17s ", "none");
break;
case AF_INET:
sin = (struct sockaddr_in *)sa;
cp = netname4(sin->sin_addr.s_addr,
((struct sockaddr_in *)rtinfo[RTAX_NETMASK])->sin_addr.s_addr);
if (vflag)
n = strlen(cp) < 11 ? 11 : strlen(cp);
else
n = 11;
printf("%-*.*s ", n, n, cp);
cp = routename4(sin->sin_addr.s_addr);
if (vflag)
n = strlen(cp) < 17 ? 17 : strlen(cp);
else
n = 17;
printf("%-*.*s ", n, n, cp);
#if 0
if (aflag) {
u_long multiaddr;
struct in_multi inm;
multiaddr = (u_long)LIST_FIRST(&ifaddr.in.ia_multiaddrs);
while (multiaddr != 0) {
kread(multiaddr, &inm, sizeof inm);
printf("\n%25s %-17.17s ", "",
routename4(inm.inm_addr.s_addr));
multiaddr = (u_long)LIST_NEXT(&inm, inm_list);
}
}
#endif
break;
case AF_INET6:
sin6 = (struct sockaddr_in6 *)sa;
#ifdef __KAME__
if (IN6_IS_ADDR_LINKLOCAL(&sin6->sin6_addr)) {
sin6->sin6_scope_id =
ntohs(*(u_int16_t *)
&sin6->sin6_addr.s6_addr[2]);
sin6->sin6_addr.s6_addr[2] = 0;
sin6->sin6_addr.s6_addr[3] = 0;
}
#endif
cp = netname6(sin6,
(struct sockaddr_in6 *)rtinfo[RTAX_NETMASK]);
if (vflag)
n = strlen(cp) < 11 ? 11 : strlen(cp);
else
n = 11;
printf("%-*.*s ", n, n, cp);
cp = routename6(sin6);
if (vflag)
n = strlen(cp) < 17 ? 17 : strlen(cp);
else
n = 17;
printf("%-*.*s ", n, n, cp);
#if 0
if (aflag) {
u_long multiaddr;
struct in6_multi inm;
struct sockaddr_in6 m6;
multiaddr = (u_long)LIST_FIRST(&ifaddr.in6.ia6_multiaddrs);
while (multiaddr != 0) {
kread(multiaddr, &inm, sizeof inm);
memset(&m6, 0, sizeof(m6));
m6.sin6_len = sizeof(struct sockaddr_in6);
m6.sin6_family = AF_INET6;
m6.sin6_addr = inm.in6m_addr;
#ifdef __KAME__
if (IN6_IS_ADDR_MC_LINKLOCAL(&m6.sin6_addr) ||
IN6_IS_ADDR_MC_INTFACELOCAL(&m6.sin6_addr)) {
m6.sin6_scope_id =
ntohs(*(u_int16_t *)
&m6.sin6_addr.s6_addr[2]);
m6.sin6_addr.s6_addr[2] = 0;
m6.sin6_addr.s6_addr[3] = 0;
}
#endif
cp = routename6(&m6);
if (vflag)
n = strlen(cp) < 17 ? 17 : strlen(cp);
else
n = 17;
printf("\n%25s %-*.*s ", "",
n, n, cp);
multiaddr = (u_long)LIST_NEXT(&inm, in6m_entry);
}
}
#endif
break;
case AF_APPLETALK:
printf("atlk:%-12s",atalk_print(sa,0x10) );
printf("%-12s ",atalk_print(sa,0x0b) );
break;
case AF_LINK:
sdl = (struct sockaddr_dl *)sa;
m = printf("%-11.11s ", "<Link>");
if (sdl->sdl_type == IFT_ETHER ||
sdl->sdl_type == IFT_CARP ||
sdl->sdl_type == IFT_FDDI ||
sdl->sdl_type == IFT_ISO88025)
printf("%-17.17s ",
ether_ntoa((struct ether_addr *)LLADDR(sdl)));
else {
cp = (char *)LLADDR(sdl);
n = sdl->sdl_alen;
goto hexprint;
}
break;
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("%x%c", *cp++ & 0xff,
n > 0 ? '.' : ' ');
m = 30 - m;
while (m-- > 0)
putchar(' ');
break;
}
if (bflag)
printf("%10llu %10llu",
ifd->ifi_ibytes, ifd->ifi_obytes);
else
printf("%8llu %5llu %8llu %5llu %5llu",
ifd->ifi_ipackets, ifd->ifi_ierrors,
ifd->ifi_opackets, ifd->ifi_oerrors,
ifd->ifi_collisions);
if (tflag)
printf(" %4d", 0 /* XXX ifnet.if_timer */);
if (dflag)
printf(" %4d", 0 /* XXX ifnet.if_snd.ifq_drops */);
putchar('\n');
}
struct iftot {
char ift_name[IFNAMSIZ]; /* interface name */
u_int64_t ift_ip; /* input packets */
u_int64_t ift_ib; /* input bytes */
u_int64_t ift_ie; /* input errors */
u_int64_t ift_op; /* output packets */
u_int64_t ift_ob; /* output bytes */
u_int64_t ift_oe; /* output errors */
u_int64_t ift_co; /* collisions */
u_int64_t ift_dr; /* drops */
} ip_cur, ip_old, sum_cur, sum_old;
volatile sig_atomic_t 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.
*/
static void
sidewaysintpr(unsigned int interval)
{
struct ifnet ifnet;
sigset_t emptyset;
int line;
fetchifs();
if (ip_cur.ift_name[0] == '\0') {
fprintf(stderr, "%s: %s: unknown interface\n",
__progname, interface);
exit(1);
}
(void)signal(SIGALRM, catchalarm);
signalled = 0;
(void)alarm(interval);
banner:
if (bflag)
printf("%7.7s in %8.8s %6.6s out %5.5s",
ip_cur.ift_name, " ",
ip_cur.ift_name, " ");
else
printf("%5.5s in %5.5s%5.5s out %5.5s %5.5s",
ip_cur.ift_name, " ",
ip_cur.ift_name, " ", " ");
if (dflag)
printf(" %5.5s", " ");
if (bflag)
printf(" %7.7s in %8.8s %6.6s out %5.5s",
"total", " ", "total", " ");
else
printf(" %5.5s in %5.5s%5.5s out %5.5s %5.5s",
"total", " ", "total", " ", " ");
if (dflag)
printf(" %5.5s", " ");
putchar('\n');
if (bflag)
printf("%10.10s %8.8s %10.10s %5.5s",
"bytes", " ", "bytes", " ");
else
printf("%8.8s %5.5s %8.8s %5.5s %5.5s",
"packets", "errs", "packets", "errs", "colls");
if (dflag)
printf(" %5.5s", "drops");
if (bflag)
printf(" %10.10s %8.8s %10.10s %5.5s",
"bytes", " ", "bytes", " ");
else
printf(" %8.8s %5.5s %8.8s %5.5s %5.5s",
"packets", "errs", "packets", "errs", "colls");
if (dflag)
printf(" %5.5s", "drops");
putchar('\n');
fflush(stdout);
line = 0;
bzero(&ip_old, sizeof(ip_old));
bzero(&sum_old, sizeof(sum_old));
loop:
bzero(&sum_cur, sizeof(sum_cur));
fetchifs();
if (bflag)
printf("%10llu %8.8s %10llu %5.5s",
ip_cur.ift_ib - ip_old.ift_ib, " ",
ip_cur.ift_ob - ip_old.ift_ob, " ");
else
printf("%8llu %5llu %8llu %5llu %5llu",
ip_cur.ift_ip - ip_old.ift_ip,
ip_cur.ift_ie - ip_old.ift_ie,
ip_cur.ift_op - ip_old.ift_op,
ip_cur.ift_oe - ip_old.ift_oe,
ip_cur.ift_co - ip_old.ift_co);
if (dflag)
printf(" %5llu",
/* XXX ifnet.if_snd.ifq_drops - ip->ift_dr); */
0);
ip_old = ip_cur;
if (bflag)
printf(" %10llu %8.8s %10llu %5.5s",
sum_cur.ift_ib - sum_old.ift_ib, " ",
sum_cur.ift_ob - sum_old.ift_ob, " ");
else
printf(" %8llu %5llu %8llu %5llu %5llu",
sum_cur.ift_ip - sum_old.ift_ip,
sum_cur.ift_ie - sum_old.ift_ie,
sum_cur.ift_op - sum_old.ift_op,
sum_cur.ift_oe - sum_old.ift_oe,
sum_cur.ift_co - sum_old.ift_co);
if (dflag)
printf(" %5llu", sum_cur.ift_dr - sum_old.ift_dr);
sum_old = sum_cur;
putchar('\n');
fflush(stdout);
line++;
sigemptyset(&emptyset);
if (!signalled)
sigsuspend(&emptyset);
signalled = 0;
(void)alarm(interval);
if (line == 21)
goto banner;
goto loop;
/*NOTREACHED*/
}
/*
* Called if an interval expires before sidewaysintpr has completed a loop.
* Sets a flag to not wait for the alarm.
*/
/* ARGSUSED */
static void
catchalarm(int signo)
{
signalled = 1;
}
static void
get_rtaddrs(int addrs, struct sockaddr *sa, struct sockaddr **rti_info)
{
int i;
for (i = 0; i < RTAX_MAX; i++) {
if (addrs & (1 << i)) {
rti_info[i] = sa;
sa = (struct sockaddr *)((char *)(sa) +
roundup(sa->sa_len, sizeof(long)));
} else
rti_info[i] = NULL;
}
}
static void
fetchifs(void)
{
struct if_msghdr ifm;
int mib[6] = { CTL_NET, AF_ROUTE, 0, 0, NET_RT_IFLIST, 0 };
struct rt_msghdr *rtm;
struct if_data *ifd;
struct sockaddr *sa, *rti_info[RTAX_MAX];
struct sockaddr_dl *sdl;
char *buf, *next, *lim;
char name[IFNAMSIZ];
size_t len;
if (sysctl(mib, 6, NULL, &len, NULL, 0) == -1)
err(1, "sysctl");
if ((buf = malloc(len)) == NULL)
err(1, NULL);
if (sysctl(mib, 6, buf, &len, NULL, 0) == -1)
err(1, "sysctl");
lim = buf + len;
for (next = buf; next < lim; next += rtm->rtm_msglen) {
rtm = (struct rt_msghdr *)next;
if (rtm->rtm_version != RTM_VERSION)
continue;
switch (rtm->rtm_type) {
case RTM_IFINFO:
bcopy(next, &ifm, sizeof ifm);
ifd = &ifm.ifm_data;
sa = (struct sockaddr *)(next + rtm->rtm_hdrlen);
get_rtaddrs(ifm.ifm_addrs, sa, rti_info);
sdl = (struct sockaddr_dl *)rti_info[RTAX_IFP];
if (sdl == NULL || sdl->sdl_family != AF_LINK)
continue;
bzero(name, sizeof(name));
if (sdl->sdl_nlen >= IFNAMSIZ)
memcpy(name, sdl->sdl_data, IFNAMSIZ - 1);
else if (sdl->sdl_nlen > 0)
memcpy(name, sdl->sdl_data, sdl->sdl_nlen);
if (interface != NULL && !strcmp(name, interface)) {
strlcpy(ip_cur.ift_name, name,
sizeof(ip_cur.ift_name));
ip_cur.ift_ip = ifd->ifi_ipackets;
ip_cur.ift_ib = ifd->ifi_ibytes;
ip_cur.ift_ie = ifd->ifi_ierrors;
ip_cur.ift_op = ifd->ifi_opackets;
ip_cur.ift_ob = ifd->ifi_obytes;
ip_cur.ift_oe = ifd->ifi_oerrors;
ip_cur.ift_co = ifd->ifi_collisions;
ip_cur.ift_dr = 0;
/* XXX ifnet.if_snd.ifq_drops */
}
sum_cur.ift_ip += ifd->ifi_ipackets;
sum_cur.ift_ib += ifd->ifi_ibytes;
sum_cur.ift_ie += ifd->ifi_ierrors;
sum_cur.ift_op += ifd->ifi_opackets;
sum_cur.ift_ob += ifd->ifi_obytes;
sum_cur.ift_oe += ifd->ifi_oerrors;
sum_cur.ift_co += ifd->ifi_collisions;
sum_cur.ift_dr += 0; /* XXX ifnet.if_snd.ifq_drops */
break;
}
}
if (interface == NULL) {
strlcpy(ip_cur.ift_name, name,
sizeof(ip_cur.ift_name));
ip_cur.ift_ip = ifd->ifi_ipackets;
ip_cur.ift_ib = ifd->ifi_ibytes;
ip_cur.ift_ie = ifd->ifi_ierrors;
ip_cur.ift_op = ifd->ifi_opackets;
ip_cur.ift_ob = ifd->ifi_obytes;
ip_cur.ift_oe = ifd->ifi_oerrors;
ip_cur.ift_co = ifd->ifi_collisions;
ip_cur.ift_dr = 0;
/* XXX ifnet.if_snd.ifq_drops */
}
free(buf);
}