freebsd-skq/usr.bin/netstat/if.c

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/*-
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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
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#ifndef lint
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static char sccsid[] = "@(#)if.c 8.3 (Berkeley) 4/28/95";
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#endif /* not lint */
#endif
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
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#include <sys/types.h>
#include <sys/protosw.h>
#include <sys/socket.h>
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
#include <sys/socketvar.h>
#include <sys/sysctl.h>
#include <sys/time.h>
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#include <net/if.h>
#include <net/if_var.h>
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#include <net/if_dl.h>
#include <net/if_types.h>
#include <net/ethernet.h>
#include <net/pfvar.h>
#include <net/if_pfsync.h>
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#include <netinet/in.h>
#include <netinet/in_var.h>
#include <netipx/ipx.h>
#include <netipx/ipx_if.h>
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#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <libutil.h>
#ifdef INET6
#include <netdb.h>
#endif
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#include <signal.h>
#include <stdint.h>
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#include <stdio.h>
#include <stdlib.h>
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#include <string.h>
#include <unistd.h>
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#include "netstat.h"
#define YES 1
#define NO 0
static void sidewaysintpr(int, u_long);
static void catchalarm(int);
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#ifdef INET6
static char addr_buf[NI_MAXHOST]; /* for getnameinfo() */
#endif
/*
* Dump pfsync statistics structure.
*/
void
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
pfsync_stats(u_long off, const char *name, int af1 __unused, int proto __unused)
{
struct pfsyncstats pfsyncstat, zerostat;
size_t len = sizeof(struct pfsyncstats);
Restore netstat -M functionality for most statistics on core dumps. In general, when support was added to netstat for fetching data using sysctl, no provision was left for fetching equivalent data from a core dump, and in fact, netstat would _always_ fetch data from the live kernel using sysctl even when -M was specified resulting in the user believing they were getting data from coredumps when they actually weren't. Some specific changes: - Add a global 'live' variable that is true if netstat is running against the live kernel and false if -M has been specified. - Stop abusing the sysctl flag in the protocol tables to hold the protocol number. Instead, the protocol is now its own field in the tables, and it is passed as a separate parameter to the PCB and stat routines rather than overloading the KVM offset parameter. - Don't run PCB or stats functions who don't have a namelist offset if we are being run against a crash dump (!live). - For the inet and unix PCB routines, we generate the same buffer from KVM that the sysctl usually generates complete with the header and trailer. - Don't run bpf stats for !live (before it would just silently always run live). - kread() no longer trashes memory when opening the buffer if there is an error on open and the passed in buffer is smaller than _POSIX2_LINE_MAX. - The multicast routing code doesn't fallback to kvm on live kernels if the sysctl fails. Keeping this made the code rather hairy, and netstat is already tied to the kernel ABI anyway (even when using sysctl's since things like xinpcb contain an inpcb) so any kernels this is run against that have the multicast routing stuff should have the sysctls. - Don't try to dig around in the kernel linker in the netgraph PCB routine for core dumps. Other notes: - sctp's PCB routine only works on live kernels, it looked rather complicated to generate all the same stuff via KVM. Someone can always add it later if desired though. - Fix the ipsec removal bug where N_xxx for IPSEC stats weren't renumbered. - Use sysctlbyname() everywhere rather than hardcoded mib values. MFC after: 1 week Approved by: re (rwatson)
2007-07-16 17:15:55 +00:00
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.
*/
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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);
}
}
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/*
* Print a description of the network interfaces.
*/
void
intpr(int interval1, u_long ifnetaddr, void (*pfunc)(char *))
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{
struct ifnet ifnet;
struct ifnethead ifnethead;
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union {
struct ifaddr ifa;
struct in_ifaddr in;
#ifdef INET6
struct in6_ifaddr in6;
#endif
struct ipx_ifaddr ipx;
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} ifaddr;
u_long ifaddraddr;
u_long ifaddrfound;
u_long ifnetfound;
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;
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struct sockaddr *sa = NULL;
char name[IFNAMSIZ];
short network_layer;
short link_layer;
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if (ifnetaddr == 0) {
printf("ifnet: symbol not defined\n");
return;
}
if (interval1) {
sidewaysintpr(interval1, ifnetaddr);
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return;
}
if (kread(ifnetaddr, (char *)&ifnethead, sizeof ifnethead) != 0)
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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');
}
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ifaddraddr = 0;
while (ifnetaddr || ifaddraddr) {
struct sockaddr_in *sockin;
#ifdef INET6
struct sockaddr_in6 *sockin6;
#endif
char *cp;
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int n, m;
network_layer = 0;
link_layer = 0;
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if (ifaddraddr == 0) {
ifnetfound = ifnetaddr;
if (kread(ifnetaddr, (char *)&ifnet, sizeof ifnet) != 0)
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return;
strlcpy(name, ifnet.if_xname, sizeof(name));
ifnetaddr = (u_long)TAILQ_NEXT(&ifnet, if_link);
if (interface != 0 && strcmp(name, interface) != 0)
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continue;
cp = index(name, '\0');
if (pfunc) {
(*pfunc)(name);
continue;
}
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if ((ifnet.if_flags&IFF_UP) == 0)
*cp++ = '*';
*cp = '\0';
ifaddraddr = (u_long)TAILQ_FIRST(&ifnet.if_addrhead);
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}
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;
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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");
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} else {
if (kread(ifaddraddr, (char *)&ifaddr, sizeof ifaddr)
!= 0) {
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ifaddraddr = 0;
continue;
}
#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;
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);
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switch (sa->sa_family) {
case AF_UNSPEC:
printf("%-13.13s ", "none");
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printf("%-15.15s ", "none");
break;
case AF_INET:
sockin = (struct sockaddr_in *)sa;
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#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,
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ifaddr.in.ia_subnetmask));
#else
printf("%-13.13s ",
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netname(htonl(ifaddr.in.ia_subnet),
ifaddr.in.ia_subnetmask));
#endif
printf("%-17.17s ",
routename(sockin->sin_addr.s_addr));
network_layer = 1;
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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;
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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;
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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);
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}
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 = 32 - m;
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while (m-- > 0)
putchar(' ');
link_layer = 1;
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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);
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}
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);
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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');
}
}
}
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}
}
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 */
};
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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.
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* First line printed at top of screen is always cumulative.
* XXX - should be rewritten to use ifmib(4).
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*/
static void
sidewaysintpr(int interval1, u_long off)
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{
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;
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if (kread(off, (char *)&ifnethead, sizeof ifnethead) != 0)
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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;
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for (off = firstifnet, ip = iftot; off;) {
char name[IFNAMSIZ];
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if (kread(off, (char *)&ifnet, sizeof ifnet) != 0)
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break;
strlcpy(name, ifnet.if_xname, sizeof(name));
if (interface && strcmp(name, interface) == 0) {
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interesting = ip;
interesting_off = off;
}
2010-07-15 00:04:14 +00:00
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);
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}
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));
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(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");
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putchar('\n');
printf("%10s %5s %5s %10s %10s %5s %10s %5s",
"packets", "errs", "idrops", "bytes", "packets", "errs", "bytes",
"colls");
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if (dflag)
printf(" %5.5s", "drops");
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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);
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if (dflag)
show_stat("LSu", 5,
ifnet.if_snd.ifq_drops - ip->ift_dr, 1);
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}
ip->ift_ip = ifnet.if_ipackets;
ip->ift_ie = ifnet.if_ierrors;
ip->ift_id = ifnet.if_iqdrops;
ip->ift_ib = ifnet.if_ibytes;
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ip->ift_op = ifnet.if_opackets;
ip->ift_oe = ifnet.if_oerrors;
ip->ift_ob = ifnet.if_obytes;
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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;
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}
if (!first)
putchar('\n');
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fflush(stdout);
if ((noutputs != 0) && (--noutputs == 0))
exit(0);
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oldmask = sigblock(sigmask(SIGALRM));
while (!signalled)
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sigpause(0);
signalled = NO;
sigsetmask(oldmask);
line++;
first = 0;
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if (line == 21)
goto banner;
else
goto loop;
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/*NOTREACHED*/
}
/*
* Set a flag to indicate that a signal from the periodic itimer has been
* caught.
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*/
static void
catchalarm(int signo __unused)
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{
signalled = YES;
}