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ad47abd20c
freebsd-skq/usr.bin/netstat/if.c
Eitan Adler b4f7ea1936 Fix warning when compiling with gcc46: 
error: variable 'ifnetfound' set but not used

Approved by:	dim
MFC after:      3 days
2012-01-10 02:58:36 +00:00

706 lines
18 KiB
C
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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.
* 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.
*/
#if 0
#ifndef lint
static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95";
#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/socketvar.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/ethernet.h>
#include <net/pfvar.h>
#include <net/if_pfsync.h>
#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <libutil.h>
#ifdef INET6
#include <netdb.h>
#endif
#include <signal.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
#define YES 1
#define NO 0
static void sidewaysintpr(int, u_long);
static void catchalarm(int);
#ifdef INET6
static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
#endif
/*
* Dump pfsync statistics structure.
*/
void
pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
{
struct pfsyncstats pfsyncstat, zerostat;
size_t len = sizeof(struct pfsyncstats);
if (live) {
if (zflag)
memset(&zerostat, 0, len);
if (sysctlbyname("net.inet.pfsync.stats", &pfsyncstat, &len,
zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
if (errno != ENOENT)
warn("sysctl: net.inet.pfsync.stats");
return;
}
} else
kread(off, &pfsyncstat, len);
printf("%s:\n", name);
#define p(f, m) if (pfsyncstat.f || sflag <= 1) \
printf(m, (uintmax_t)pfsyncstat.f, plural(pfsyncstat.f))
#define p2(f, m) if (pfsyncstat.f || sflag <= 1) \
printf(m, (uintmax_t)pfsyncstat.f)
p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n");
p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n");
p(pfsyncs_badif, "\t\t%ju packet%s discarded for bad interface\n");
p(pfsyncs_badttl, "\t\t%ju packet%s discarded for bad ttl\n");
p(pfsyncs_hdrops, "\t\t%ju packet%s shorter than header\n");
p(pfsyncs_badver, "\t\t%ju packet%s discarded for bad version\n");
p(pfsyncs_badauth, "\t\t%ju packet%s discarded for bad HMAC\n");
p(pfsyncs_badact,"\t\t%ju packet%s discarded for bad action\n");
p(pfsyncs_badlen, "\t\t%ju packet%s discarded for short packet\n");
p(pfsyncs_badval, "\t\t%ju state%s discarded for bad values\n");
p(pfsyncs_stale, "\t\t%ju stale state%s\n");
p(pfsyncs_badstate, "\t\t%ju failed state lookup/insert%s\n");
p(pfsyncs_opackets, "\t%ju packet%s sent (IPv4)\n");
p(pfsyncs_opackets6, "\t%ju packet%s sent (IPv6)\n");
p2(pfsyncs_onomem, "\t\t%ju send failed due to mbuf memory error\n");
p2(pfsyncs_oerrors, "\t\t%ju send error\n");
#undef p
#undef p2
}
/*
* Display a formatted value, or a '-' in the same space.
*/
static void
show_stat(const char *fmt, int width, u_long value, short showvalue)
{
const char *lsep, *rsep;
char newfmt[32];
lsep = "";
if (strncmp(fmt, "LS", 2) == 0) {
lsep = " ";
fmt += 2;
}
rsep = " ";
if (strncmp(fmt, "NRS", 3) == 0) {
rsep = "";
fmt += 3;
}
if (showvalue == 0) {
/* Print just dash. */
sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
printf(newfmt, "-");
return;
}
if (hflag) {
char buf[5];
/* Format in human readable form. */
humanize_number(buf, sizeof(buf), (int64_t)value, "",
HN_AUTOSCALE, HN_NOSPACE | HN_DECIMAL);
sprintf(newfmt, "%s%%%ds%s", lsep, width, rsep);
printf(newfmt, buf);
} else {
/* Construct the format string. */
sprintf(newfmt, "%s%%%d%s%s", lsep, width, fmt, rsep);
printf(newfmt, value);
}
}
/*
* Print a description of the network interfaces.
*/
void
intpr(int interval1, 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;
} ifaddr;
u_long ifaddraddr;
u_long ifaddrfound;
u_long opackets;
u_long ipackets;
u_long obytes;
u_long ibytes;
u_long omcasts;
u_long imcasts;
u_long oerrors;
u_long ierrors;
u_long idrops;
u_long collisions;
int drops;
struct sockaddr *sa = NULL;
char name[IFNAMSIZ];
short network_layer;
short link_layer;
if (ifnetaddr == 0) {
printf("ifnet: symbol not defined\n");
return;
}
if (interval1) {
sidewaysintpr(interval1, ifnetaddr);
return;
}
if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead) != 0)
return;
ifnetaddr = (u_long)TAILQ_FIRST(&ifnethead);
if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0)
return;
if (!pfunc) {
if (Wflag)
printf("%-7.7s", "Name");
else
printf("%-5.5s", "Name");
printf(" %5.5s %-13.13s %-17.17s %8.8s %5.5s %5.5s",
"Mtu", "Network", "Address", "Ipkts", "Ierrs", "Idrop");
if (bflag)
printf(" %10.10s","Ibytes");
printf(" %8.8s %5.5s", "Opkts", "Oerrs");
if (bflag)
printf(" %10.10s","Obytes");
printf(" %5s", "Coll");
if (dflag)
printf(" %s", "Drop");
putchar('\n');
}
ifaddraddr = 0;
while (ifnetaddr || ifaddraddr) {
struct sockaddr_in *sockin;
#ifdef INET6
struct sockaddr_in6 *sockin6;
#endif
char *cp;
int n, m;
network_layer = 0;
link_layer = 0;
if (ifaddraddr == 0) {
if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0)
return;
strlcpy(name, ifnet.if_xname, sizeof(name));
ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link);
if (interface != 0 && strcmp(name, interface) != 0)
continue;
cp = strchr(name, '\0');
if (pfunc) {
(*pfunc)(name);
continue;
}
if ((ifnet.if_flags&IFF_UP) == 0)
*cp++ = '*';
*cp = '\0';
ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead);
}
ifaddrfound = ifaddraddr;
/*
* Get the interface stats. These may get
* overriden below on a per-interface basis.
*/
opackets = ifnet.if_opackets;
ipackets = ifnet.if_ipackets;
obytes = ifnet.if_obytes;
ibytes = ifnet.if_ibytes;
omcasts = ifnet.if_omcasts;
imcasts = ifnet.if_imcasts;
oerrors = ifnet.if_oerrors;
ierrors = ifnet.if_ierrors;
idrops = ifnet.if_iqdrops;
collisions = ifnet.if_collisions;
drops = ifnet.if_snd.ifq_drops;
if (ifaddraddr == 0) {
if (Wflag)
printf("%-7.7s", name);
else
printf("%-5.5s", name);
printf(" %5lu ", ifnet.if_mtu);
printf("%-13.13s ", "none");
printf("%-17.17s ", "none");
} else {
if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)
!= 0) {
ifaddraddr = 0;
continue;
}
#define CP(x) ((char *)(x))
cp = (CP(ifaddr.ifa.ifa_addr) - CP(ifaddraddr)) +
CP(&ifaddr);
sa = (struct sockaddr *)cp;
if (af != AF_UNSPEC && sa->sa_family != af) {
ifaddraddr =
(u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link);
continue;
}
if (Wflag)
printf("%-7.7s", name);
else
printf("%-5.5s", name);
printf(" %5lu ", ifnet.if_mtu);
switch (sa->sa_family) {
case AF_UNSPEC:
printf("%-13.13s ", "none");
printf("%-15.15s ", "none");
break;
case AF_INET:
sockin = (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("%-17.17s ",
routename(sockin->sin_addr.s_addr));
network_layer = 1;
break;
#ifdef INET6
case AF_INET6:
sockin6 = (struct sockaddr_in6 *)sa;
in6_fillscopeid(&ifaddr.in6.ia_addr);
printf("%-13.13s ",
netname6(&ifaddr.in6.ia_addr,
&ifaddr.in6.ia_prefixmask.sin6_addr));
in6_fillscopeid(sockin6);
getnameinfo(sa, sa->sa_len, addr_buf,
sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
printf("%-17.17s ", addr_buf);
network_layer = 1;
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("%-17s ",
ipx_phost((struct sockaddr *)sipx));
}
network_layer = 1;
break;
case AF_APPLETALK:
printf("atalk:%-12.12s ",atalk_print(sa,0x10) );
printf("%-11.11s ",atalk_print(sa,0x0b) );
break;
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("%-13.13s ", 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 < 30))
m += printf("%02x%c", *cp++ & 0xff,
n > 0 ? ':' : ' ');
m = 32 - m;
while (m-- > 0)
putchar(' ');
link_layer = 1;
break;
}
/*
* Fixup the statistics for interfaces that
* update stats for their network addresses
*/
if (network_layer) {
opackets = ifaddr.in.ia_ifa.if_opackets;
ipackets = ifaddr.in.ia_ifa.if_ipackets;
obytes = ifaddr.in.ia_ifa.if_obytes;
ibytes = ifaddr.in.ia_ifa.if_ibytes;
}
ifaddraddr = (u_long)TAILQ_NEXT(&ifaddr.ifa, ifa_link);
}
show_stat("lu", 8, ipackets, link_layer|network_layer);
show_stat("lu", 5, ierrors, link_layer);
show_stat("lu", 5, idrops, link_layer);
if (bflag)
show_stat("lu", 10, ibytes, link_layer|network_layer);
show_stat("lu", 8, opackets, link_layer|network_layer);
show_stat("lu", 5, oerrors, link_layer);
if (bflag)
show_stat("lu", 10, obytes, link_layer|network_layer);
show_stat("NRSlu", 5, collisions, link_layer);
if (dflag)
show_stat("LSd", 4, drops, link_layer);
putchar('\n');
if (aflag && ifaddrfound) {
/*
* Print family's multicast addresses
*/
struct ifmultiaddr *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;
TAILQ_FOREACH(multiaddr, &ifnet.if_multiaddrs, ifma_link) {
if (kread((u_long)multiaddr, (char *)&ifma,
sizeof ifma) != 0)
break;
multiaddr = &ifma;
if (kread((u_long)ifma.ifma_addr, (char *)&msa,
sizeof msa) != 0)
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:
in6_fillscopeid(&msa.in6);
getnameinfo(&msa.sa, msa.sa.sa_len,
addr_buf, sizeof(addr_buf), 0, 0,
NI_NUMERICHOST);
printf("%*s %-19.19s(refs: %d)\n",
Wflag ? 27 : 25, "",
addr_buf, ifma.ifma_refcount);
break;
#endif /* INET6 */
case AF_LINK:
switch (msa.dl.sdl_type) {
case IFT_ETHER:
case IFT_FDDI:
fmt = ether_ntoa(
(struct ether_addr *)
LLADDR(&msa.dl));
break;
}
break;
}
if (fmt) {
printf("%*s %-17.17s",
Wflag ? 27 : 25, "", fmt);
if (msa.sa.sa_family == AF_LINK) {
printf(" %8lu", imcasts);
printf("%*s",
bflag ? 17 : 6, "");
printf(" %8lu", omcasts);
}
putchar('\n');
}
}
}
}
}
struct iftot {
SLIST_ENTRY(iftot) chain;
char ift_name[IFNAMSIZ]; /* interface name */
u_long ift_ip; /* input packets */
u_long ift_ie; /* input errors */
u_long ift_id; /* input drops */
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 */
};
u_char signalled; /* set if alarm goes off "early" */
/*
* Print a running summary of interface statistics.
* Repeat display every interval1 seconds, showing statistics
* collected over that interval. Assumes that interval1 is non-zero.
* First line printed at top of screen is always cumulative.
* XXX - should be rewritten to use ifmib(4).
*/
static void
sidewaysintpr(int interval1, u_long off)
{
struct ifnet ifnet;
u_long firstifnet;
struct ifnethead ifnethead;
struct itimerval interval_it;
struct iftot *iftot, *ip, *ipn, *total, *sum, *interesting;
int line;
int oldmask, first;
u_long interesting_off;
if (kread(off, (char *)&ifnethead, sizeof ifnethead) != 0)
return;
firstifnet = (u_long)TAILQ_FIRST(&ifnethead);
if ((iftot = malloc(sizeof(struct iftot))) == NULL) {
printf("malloc failed\n");
exit(1);
}
memset(iftot, 0, sizeof(struct iftot));
interesting = NULL;
interesting_off = 0;
for (off = firstifnet, ip = iftot; off;) {
char name[IFNAMSIZ];
if (kread(off, (char *)&ifnet, sizeof ifnet) != 0)
break;
strlcpy(name, ifnet.if_xname, sizeof(name));
if (interface && strcmp(name, interface) == 0) {
interesting = ip;
interesting_off = off;
}
snprintf(ip->ift_name, sizeof(ip->ift_name), "(%s)", name);
if ((ipn = malloc(sizeof(struct iftot))) == NULL) {
printf("malloc failed\n");
exit(1);
}
memset(ipn, 0, sizeof(struct iftot));
SLIST_NEXT(ip, chain) = ipn;
ip = ipn;
off = (u_long)TAILQ_NEXT(&ifnet, if_link);
}
if (interface && interesting == NULL)
errx(1, "%s: unknown interface", interface);
if ((total = malloc(sizeof(struct iftot))) == NULL) {
printf("malloc failed\n");
exit(1);
}
memset(total, 0, sizeof(struct iftot));
if ((sum = malloc(sizeof(struct iftot))) == NULL) {
printf("malloc failed\n");
exit(1);
}
memset(sum, 0, sizeof(struct iftot));
(void)signal(SIGALRM, catchalarm);
signalled = NO;
interval_it.it_interval.tv_sec = interval1;
interval_it.it_interval.tv_usec = 0;
interval_it.it_value = interval_it.it_interval;
setitimer(ITIMER_REAL, &interval_it, NULL);
first = 1;
banner:
printf("%17s %14s %16s", "input",
interesting ? interesting->ift_name : "(Total)", "output");
putchar('\n');
printf("%10s %5s %5s %10s %10s %5s %10s %5s",
"packets", "errs", "idrops", "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) != 0) {
printf("???\n");
exit(1);
};
if (!first) {
show_stat("lu", 10, ifnet.if_ipackets - ip->ift_ip, 1);
show_stat("lu", 5, ifnet.if_ierrors - ip->ift_ie, 1);
show_stat("lu", 5, ifnet.if_iqdrops - ip->ift_id, 1);
show_stat("lu", 10, ifnet.if_ibytes - ip->ift_ib, 1);
show_stat("lu", 10, ifnet.if_opackets - ip->ift_op, 1);
show_stat("lu", 5, ifnet.if_oerrors - ip->ift_oe, 1);
show_stat("lu", 10, ifnet.if_obytes - ip->ift_ob, 1);
show_stat("NRSlu", 5,
ifnet.if_collisions - ip->ift_co, 1);
if (dflag)
show_stat("LSu", 5,
ifnet.if_snd.ifq_drops - ip->ift_dr, 1);
}
ip->ift_ip = ifnet.if_ipackets;
ip->ift_ie = ifnet.if_ierrors;
ip->ift_id = ifnet.if_iqdrops;
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_id = 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 && SLIST_NEXT(ip, chain) != NULL;
ip = SLIST_NEXT(ip, chain)) {
if (kread(off, (char *)&ifnet, sizeof ifnet) != 0) {
off = 0;
continue;
}
sum->ift_ip += ifnet.if_ipackets;
sum->ift_ie += ifnet.if_ierrors;
sum->ift_id += ifnet.if_iqdrops;
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)TAILQ_NEXT(&ifnet, if_link);
}
if (!first) {
show_stat("lu", 10, sum->ift_ip - total->ift_ip, 1);
show_stat("lu", 5, sum->ift_ie - total->ift_ie, 1);
show_stat("lu", 5, sum->ift_id - total->ift_id, 1);
show_stat("lu", 10, sum->ift_ib - total->ift_ib, 1);
show_stat("lu", 10, sum->ift_op - total->ift_op, 1);
show_stat("lu", 5, sum->ift_oe - total->ift_oe, 1);
show_stat("lu", 10, sum->ift_ob - total->ift_ob, 1);
show_stat("NRSlu", 5, sum->ift_co - total->ift_co, 1);
if (dflag)
show_stat("LSu", 5,
sum->ift_dr - total->ift_dr, 1);
}
*total = *sum;
}
if (!first)
putchar('\n');
fflush(stdout);
if ((noutputs != 0) && (--noutputs == 0))
exit(0);
oldmask = sigblock(sigmask(SIGALRM));
while (!signalled)
sigpause(0);
signalled = NO;
sigsetmask(oldmask);
line++;
first = 0;
if (line == 21)
goto banner;
else
goto loop;
/*NOTREACHED*/
}
/*
* Set a flag to indicate that a signal from the periodic itimer has been
* caught.
*/
static void
catchalarm(int signo __unused)
{
signalled = YES;
}
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