freebsd-dev/usr.bin/netstat/if.c
Gleb Smirnoff 55fb7d688b Now, after r263102 we have ifi_oqdrops in if_data, restore printing of
output queue drops in netstat(1).

No driver, neither kernel fills this field in if_data, yet.

Sponsored by:	Netflix
Sponsored by:	Nginx, Inc.
2014-03-19 03:33:32 +00:00

577 lines
14 KiB
C

/*-
* Copyright (c) 2013 Gleb Smirnoff <glebius@FreeBSD.org>
* 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 <netinet/in.h>
#include <netinet/in_var.h>
#include <arpa/inet.h>
#ifdef PF
#include <net/pfvar.h>
#include <net/if_pfsync.h>
#endif
#include <err.h>
#include <errno.h>
#include <ifaddrs.h>
#include <libutil.h>
#ifdef INET6
#include <netdb.h>
#endif
#include <signal.h>
#include <stdbool.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include "netstat.h"
static void sidewaysintpr(int);
#ifdef INET6
static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
#endif
#ifdef PF
static const char* pfsyncacts[] = {
/* PFSYNC_ACT_CLR */ "clear all request",
/* PFSYNC_ACT_INS */ "state insert",
/* PFSYNC_ACT_INS_ACK */ "state inserted ack",
/* PFSYNC_ACT_UPD */ "state update",
/* PFSYNC_ACT_UPD_C */ "compressed state update",
/* PFSYNC_ACT_UPD_REQ */ "uncompressed state request",
/* PFSYNC_ACT_DEL */ "state delete",
/* PFSYNC_ACT_DEL_C */ "compressed state delete",
/* PFSYNC_ACT_INS_F */ "fragment insert",
/* PFSYNC_ACT_DEL_F */ "fragment delete",
/* PFSYNC_ACT_BUS */ "bulk update mark",
/* PFSYNC_ACT_TDB */ "TDB replay counter update",
/* PFSYNC_ACT_EOF */ "end of frame mark",
};
static void
pfsync_acts_stats(const char *fmt, uint64_t *a)
{
int i;
for (i = 0; i < PFSYNC_ACT_MAX; i++, a++)
if (*a || sflag <= 1)
printf(fmt, *a, pfsyncacts[i], plural(*a));
}
/*
* 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.pfsync.stats", &pfsyncstat, &len,
zflag ? &zerostat : NULL, zflag ? len : 0) < 0) {
if (errno != ENOENT)
warn("sysctl: net.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))
p(pfsyncs_ipackets, "\t%ju packet%s received (IPv4)\n");
p(pfsyncs_ipackets6, "\t%ju packet%s received (IPv6)\n");
pfsync_acts_stats("\t %ju %s%s received\n",
&pfsyncstat.pfsyncs_iacts[0]);
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");
pfsync_acts_stats("\t %ju %s%s sent\n",
&pfsyncstat.pfsyncs_oacts[0]);
p(pfsyncs_onomem, "\t\t%ju failure%s due to mbuf memory error\n");
p(pfsyncs_oerrors, "\t\t%ju send error%s\n");
#undef p
}
#endif /* PF */
/*
* 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);
}
}
/*
* Find next multiaddr for a given interface name.
*/
static struct ifmaddrs *
next_ifma(struct ifmaddrs *ifma, const char *name, const sa_family_t family)
{
for(; ifma != NULL; ifma = ifma->ifma_next) {
struct sockaddr_dl *sdl;
sdl = (struct sockaddr_dl *)ifma->ifma_name;
if (ifma->ifma_addr->sa_family == family &&
strcmp(sdl->sdl_data, name) == 0)
break;
}
return (ifma);
}
/*
* Print a description of the network interfaces.
*/
void
intpr(int interval, void (*pfunc)(char *), int af)
{
struct ifaddrs *ifap, *ifa;
struct ifmaddrs *ifmap, *ifma;
if (interval)
return sidewaysintpr(interval);
if (getifaddrs(&ifap) != 0)
err(EX_OSERR, "getifaddrs");
if (aflag && getifmaddrs(&ifmap) != 0)
err(EX_OSERR, "getifmaddrs");
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');
}
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
bool network = false, link = false;
if (interface != NULL && strcmp(ifa->ifa_name, interface) != 0)
continue;
if (pfunc) {
char *name;
name = ifa->ifa_name;
(*pfunc)(name);
/*
* Skip all ifaddrs belonging to same interface.
*/
while(ifa->ifa_next != NULL &&
(strcmp(ifa->ifa_next->ifa_name, name) == 0)) {
ifa = ifa->ifa_next;
}
continue;
}
if (af != AF_UNSPEC && ifa->ifa_addr->sa_family != af)
continue;
if (Wflag)
printf("%-7.7s", ifa->ifa_name);
else
printf("%-5.5s", ifa->ifa_name);
#define IFA_MTU(ifa) (((struct if_data *)(ifa)->ifa_data)->ifi_mtu)
show_stat("lu", 6, IFA_MTU(ifa), IFA_MTU(ifa));
#undef IFA_MTU
switch (ifa->ifa_addr->sa_family) {
case AF_UNSPEC:
printf("%-13.13s ", "none");
printf("%-15.15s ", "none");
break;
case AF_INET:
{
struct sockaddr_in *sin, *mask;
sin = (struct sockaddr_in *)ifa->ifa_addr;
mask = (struct sockaddr_in *)ifa->ifa_netmask;
printf("%-13.13s ", netname(sin->sin_addr.s_addr,
mask->sin_addr.s_addr));
printf("%-17.17s ",
routename(sin->sin_addr.s_addr));
network = true;
break;
}
#ifdef INET6
case AF_INET6:
{
struct sockaddr_in6 *sin6, *mask;
sin6 = (struct sockaddr_in6 *)ifa->ifa_addr;
mask = (struct sockaddr_in6 *)ifa->ifa_netmask;
printf("%-13.13s ", netname6(sin6, &mask->sin6_addr));
getnameinfo(ifa->ifa_addr, ifa->ifa_addr->sa_len,
addr_buf, sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
printf("%-17.17s ", addr_buf);
network = 1;
break;
}
#endif /* INET6 */
case AF_LINK:
{
struct sockaddr_dl *sdl;
char *cp, linknum[10];
int n, m;
sdl = (struct sockaddr_dl *)ifa->ifa_addr;
cp = (char *)LLADDR(sdl);
n = sdl->sdl_alen;
sprintf(linknum, "<Link#%d>", sdl->sdl_index);
m = printf("%-13.13s ", linknum);
while ((--n >= 0) && (m < 30))
m += printf("%02x%c", *cp++ & 0xff,
n > 0 ? ':' : ' ');
m = 32 - m;
while (m-- > 0)
putchar(' ');
link = 1;
break;
}
}
#define IFA_STAT(s) (((struct if_data *)ifa->ifa_data)->ifi_ ## s)
show_stat("lu", 8, IFA_STAT(ipackets), link|network);
show_stat("lu", 5, IFA_STAT(ierrors), link);
show_stat("lu", 5, IFA_STAT(iqdrops), link);
if (bflag)
show_stat("lu", 10, IFA_STAT(ibytes), link|network);
show_stat("lu", 8, IFA_STAT(opackets), link|network);
show_stat("lu", 5, IFA_STAT(oerrors), link);
if (bflag)
show_stat("lu", 10, IFA_STAT(obytes), link|network);
show_stat("NRSlu", 5, IFA_STAT(collisions), link);
if (dflag)
show_stat("LSlu", 5, IFA_STAT(oqdrops), link);
putchar('\n');
if (!aflag)
continue;
/*
* Print family's multicast addresses.
*/
for (ifma = next_ifma(ifmap, ifa->ifa_name,
ifa->ifa_addr->sa_family);
ifma != NULL;
ifma = next_ifma(ifma, ifa->ifa_name,
ifa->ifa_addr->sa_family)) {
const char *fmt = NULL;
switch (ifma->ifma_addr->sa_family) {
case AF_INET:
{
struct sockaddr_in *sin;
sin = (struct sockaddr_in *)ifma->ifma_addr;
fmt = routename(sin->sin_addr.s_addr);
break;
}
#ifdef INET6
case AF_INET6:
/* in6_fillscopeid(&msa.in6); */
getnameinfo(ifma->ifma_addr,
ifma->ifma_addr->sa_len, addr_buf,
sizeof(addr_buf), 0, 0, NI_NUMERICHOST);
printf("%*s %s\n",
Wflag ? 27 : 25, "", addr_buf);
break;
#endif /* INET6 */
case AF_LINK:
{
struct sockaddr_dl *sdl;
sdl = (struct sockaddr_dl *)ifma->ifma_addr;
switch (sdl->sdl_type) {
case IFT_ETHER:
case IFT_FDDI:
fmt = ether_ntoa(
(struct ether_addr *)LLADDR(sdl));
break;
}
break;
}
}
if (fmt) {
printf("%*s %-17.17s",
Wflag ? 27 : 25, "", fmt);
if (ifma->ifma_addr->sa_family == AF_LINK) {
printf(" %8ju",
(uintmax_t )IFA_STAT(imcasts));
printf("%*s", bflag ? 17 : 6, "");
printf(" %8ju",
(uintmax_t )IFA_STAT(omcasts));
}
putchar('\n');
}
ifma = ifma->ifma_next;
}
}
freeifaddrs(ifap);
if (aflag)
freeifmaddrs(ifmap);
}
struct iftot {
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_od; /* output drops */
u_long ift_co; /* collisions */
u_long ift_ib; /* input bytes */
u_long ift_ob; /* output bytes */
};
/*
* Obtain stats for interface(s).
*/
static void
fill_iftot(struct iftot *st)
{
struct ifaddrs *ifap, *ifa;
bool found = false;
if (getifaddrs(&ifap) != 0)
err(EX_OSERR, "getifaddrs");
bzero(st, sizeof(*st));
for (ifa = ifap; ifa; ifa = ifa->ifa_next) {
if (ifa->ifa_addr->sa_family != AF_LINK)
continue;
if (interface) {
if (strcmp(ifa->ifa_name, interface) == 0)
found = true;
else
continue;
}
st->ift_ip += IFA_STAT(ipackets);
st->ift_ie += IFA_STAT(ierrors);
st->ift_id += IFA_STAT(iqdrops);
st->ift_ib += IFA_STAT(ibytes);
st->ift_op += IFA_STAT(opackets);
st->ift_oe += IFA_STAT(oerrors);
st->ift_od += IFA_STAT(oqdrops);
st->ift_ob += IFA_STAT(obytes);
st->ift_co += IFA_STAT(collisions);
}
if (interface && found == false)
err(EX_DATAERR, "interface %s not found", interface);
freeifaddrs(ifap);
}
/*
* Set a flag to indicate that a signal from the periodic itimer has been
* caught.
*/
static sig_atomic_t signalled;
static void
catchalarm(int signo __unused)
{
signalled = true;
}
/*
* 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(int interval)
{
struct iftot ift[2], *new, *old;
struct itimerval interval_it;
int oldmask, line;
new = &ift[0];
old = &ift[1];
fill_iftot(old);
(void)signal(SIGALRM, catchalarm);
signalled = false;
interval_it.it_interval.tv_sec = interval;
interval_it.it_interval.tv_usec = 0;
interval_it.it_value = interval_it.it_interval;
setitimer(ITIMER_REAL, &interval_it, NULL);
banner:
printf("%17s %14s %16s", "input",
interface != NULL ? interface : "(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 ((noutputs != 0) && (--noutputs == 0))
exit(0);
oldmask = sigblock(sigmask(SIGALRM));
while (!signalled)
sigpause(0);
signalled = false;
sigsetmask(oldmask);
line++;
fill_iftot(new);
show_stat("lu", 10, new->ift_ip - old->ift_ip, 1);
show_stat("lu", 5, new->ift_ie - old->ift_ie, 1);
show_stat("lu", 5, new->ift_id - old->ift_id, 1);
show_stat("lu", 10, new->ift_ib - old->ift_ib, 1);
show_stat("lu", 10, new->ift_op - old->ift_op, 1);
show_stat("lu", 5, new->ift_oe - old->ift_oe, 1);
show_stat("lu", 10, new->ift_ob - old->ift_ob, 1);
show_stat("NRSlu", 5, new->ift_co - old->ift_co, 1);
if (dflag)
show_stat("LSlu", 5, new->ift_od - old->ift_od, 1);
putchar('\n');
fflush(stdout);
if (new == &ift[0]) {
new = &ift[1];
old = &ift[0];
} else {
new = &ift[0];
old = &ift[1];
}
if (line == 21)
goto banner;
else
goto loop;
/* NOTREACHED */
}