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NetBSD/usr.bin/netstat/inet.c

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/* $NetBSD: inet.c,v 1.106 2015/02/08 15:09:45 christos 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/cdefs.h>
#ifndef lint
#if 0
static char sccsid[] = "from: @(#)inet.c 8.4 (Berkeley) 4/20/94";
#else
__RCSID("$NetBSD: inet.c,v 1.106 2015/02/08 15:09:45 christos Exp $");
#endif
#endif /* not lint */
#define _CALLOUT_PRIVATE /* for defs in sys/callout.h */
#include <sys/param.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/mbuf.h>
#include <sys/protosw.h>
#include <sys/sysctl.h>
#include <net/if_arp.h>
#include <net/route.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#define ICMP_STRINGS
#include <netinet/ip_icmp.h>
#ifdef INET6
#include <netinet/ip6.h>
#endif
#include <netinet/icmp_var.h>
#include <netinet/igmp_var.h>
#include <netinet/ip_var.h>
#include <netinet/pim_var.h>
#include <netinet/tcp.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_seq.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#define TCPTIMERS
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcp_debug.h>
#include <netinet/udp.h>
#include <netinet/ip_carp.h>
#include <netinet/udp_var.h>
#include <netinet/tcp_vtw.h>
#include <arpa/inet.h>
#include <kvm.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <stdlib.h>
#include <err.h>
#include <util.h>
#include "netstat.h"
#include "vtw.h"
#include "prog_ops.h"
char *inetname(struct in_addr *);
void inetprint(struct in_addr *, u_int16_t, const char *, int);
void print_vtw_v4(const vtw_t *);
/*
* Print a summary of connections related to an Internet
* protocol. For TCP, also give state of connection.
* Listening processes (aflag) are suppressed unless the
* -a (all) flag is specified.
*/
static int width;
static int compact;
/* VTW-related variables. */
static struct timeval now;
static void
protoprhdr(void)
{
printf("Active Internet connections");
if (aflag)
printf(" (including servers)");
putchar('\n');
if (Aflag)
printf("%-8.8s ", "PCB");
printf(
Vflag ? "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %-13.13s Expires\n"
: "%-5.5s %-6.6s %-6.6s %s%-*.*s %-*.*s %s\n",
"Proto", "Recv-Q", "Send-Q", compact ? "" : " ",
width, width, "Local Address",
width, width, "Foreign Address",
"State");
}
static void
protopr0(intptr_t ppcb, u_long rcv_sb_cc, u_long snd_sb_cc,
struct in_addr *laddr, u_int16_t lport,
struct in_addr *faddr, u_int16_t fport,
short t_state, const char *name, int inp_flags,
const struct timeval *expires)
{
static const char *shorttcpstates[] = {
"CLOSED", "LISTEN", "SYNSEN", "SYSRCV",
"ESTABL", "CLWAIT", "FWAIT1", "CLOSNG",
"LASTAK", "FWAIT2", "TMWAIT",
};
int istcp;
istcp = strcmp(name, "tcp") == 0;
if (Aflag) {
printf("%8" PRIxPTR " ", ppcb);
}
printf("%-5.5s %6ld %6ld%s", name, rcv_sb_cc, snd_sb_cc,
compact ? "" : " ");
if (numeric_port) {
inetprint(laddr, lport, name, 1);
inetprint(faddr, fport, name, 1);
} else if (inp_flags & INP_ANONPORT) {
inetprint(laddr, lport, name, 1);
inetprint(faddr, fport, name, 0);
} else {
inetprint(laddr, lport, name, 0);
inetprint(faddr, fport, name, 0);
}
if (istcp) {
if (t_state < 0 || t_state >= TCP_NSTATES)
printf(" %d", t_state);
else
printf(" %s", compact ? shorttcpstates[t_state] :
tcpstates[t_state]);
}
if (Vflag && expires != NULL) {
if (expires->tv_sec == 0 && expires->tv_usec == -1)
printf(" reclaimed");
else {
struct timeval delta;
timersub(expires, &now, &delta);
printf(" %.3fms",
delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0);
}
}
putchar('\n');
}
static void
dbg_printf(const char *fmt, ...)
{
return;
}
void
print_vtw_v4(const vtw_t *vtw)
{
const vtw_v4_t *v4 = (const vtw_v4_t *)vtw;
struct timeval delta;
struct in_addr la, fa;
char buf[2][32];
static const struct timeval zero = {.tv_sec = 0, .tv_usec = 0};
la.s_addr = v4->laddr;
fa.s_addr = v4->faddr;
snprintf(&buf[0][0], 32, "%s", inet_ntoa(la));
snprintf(&buf[1][0], 32, "%s", inet_ntoa(fa));
timersub(&vtw->expire, &now, &delta);
if (vtw->expire.tv_sec == 0 && vtw->expire.tv_usec == -1) {
dbg_printf("%15.15s:%d %15.15s:%d reclaimed\n"
,buf[0], ntohs(v4->lport)
,buf[1], ntohs(v4->fport));
if (!(Vflag && vflag))
return;
} else if (vtw->expire.tv_sec == 0)
return;
else if (timercmp(&delta, &zero, <) && !(Vflag && vflag)) {
dbg_printf("%15.15s:%d %15.15s:%d expired\n"
,buf[0], ntohs(v4->lport)
,buf[1], ntohs(v4->fport));
return;
} else {
dbg_printf("%15.15s:%d %15.15s:%d expires in %.3fms\n"
,buf[0], ntohs(v4->lport)
,buf[1], ntohs(v4->fport)
,delta.tv_sec * 1000.0 + delta.tv_usec / 1000.0);
}
protopr0(0, 0, 0,
&la, v4->lport,
&fa, v4->fport,
TCPS_TIME_WAIT, "tcp", 0, &vtw->expire);
}
struct kinfo_pcb *
getpcblist_sysctl(const char *name, size_t *len) {
int mib[8];
size_t namelen = 0, size = 0;
char *mibname = NULL;
struct kinfo_pcb *pcblist;
memset(mib, 0, sizeof(mib));
if (asprintf(&mibname, "net.inet%s.%s.pcblist", name + 3, name) == -1)
err(1, "asprintf");
/* get dynamic pcblist node */
if (sysctlnametomib(mibname, mib, &namelen) == -1)
err(1, "sysctlnametomib: %s", mibname);
free(mibname);
if (prog_sysctl(mib, __arraycount(mib), NULL, &size, NULL, 0) == -1)
err(1, "sysctl (query)");
if ((pcblist = malloc(size)) == NULL)
err(1, "malloc");
memset(pcblist, 0, size);
mib[6] = sizeof(*pcblist);
mib[7] = size / sizeof(*pcblist);
if (prog_sysctl(mib, __arraycount(mib), pcblist, &size, NULL, 0) == -1)
err(1, "sysctl (copy)");
*len = size / sizeof(*pcblist);
return pcblist;
}
static struct kinfo_pcb *
getpcblist_kmem(u_long off, const char *name, size_t *len) {
struct inpcbtable table;
struct inpcb_hdr *next, *prev;
struct inpcb inpcb;
struct tcpcb tcpcb;
struct socket sockb;
int istcp = strcmp(name, "tcp") == 0;
struct kinfo_pcb *pcblist;
size_t size = 100, i;
struct sockaddr_in sin;
struct inpcbqueue *head;
if (off == 0) {
*len = 0;
return NULL;
}
kread(off, (char *)&table, sizeof table);
head = &table.inpt_queue;
next = TAILQ_FIRST(head);
prev = TAILQ_END(head);
if ((pcblist = malloc(size * sizeof(*pcblist))) == NULL)
err(1, "malloc");
i = 0;
while (next != TAILQ_END(head)) {
kread((u_long)next, (char *)&inpcb, sizeof inpcb);
prev = next;
next = TAILQ_NEXT(&inpcb, inp_queue);
if (inpcb.inp_af != AF_INET)
continue;
kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof(sockb));
if (istcp) {
kread((u_long)inpcb.inp_ppcb,
(char *)&tcpcb, sizeof (tcpcb));
}
pcblist[i].ki_ppcbaddr =
istcp ? (uintptr_t) inpcb.inp_ppcb : (uintptr_t) prev;
pcblist[i].ki_rcvq = (uint64_t)sockb.so_rcv.sb_cc;
pcblist[i].ki_sndq = (uint64_t)sockb.so_snd.sb_cc;
sin.sin_addr = inpcb.inp_laddr;
sin.sin_port = inpcb.inp_lport;
memcpy(&pcblist[i].ki_s, &sin, sizeof(sin));
sin.sin_addr = inpcb.inp_faddr;
sin.sin_port = inpcb.inp_fport;
memcpy(&pcblist[i].ki_d, &sin, sizeof(sin));
pcblist[i].ki_tstate = tcpcb.t_state;
pcblist[i].ki_pflags = inpcb.inp_flags;
if (i++ == size) {
size += 100;
struct kinfo_pcb *n = realloc(pcblist,
size * sizeof(*pcblist));
if (n == NULL)
err(1, "realloc");
pcblist = n;
}
}
*len = i;
return pcblist;
}
void
protopr(u_long off, const char *name)
{
static int first = 1;
struct kinfo_pcb *pcblist;
size_t i, len;
compact = 0;
if (Aflag) {
if (!numeric_addr)
width = 18;
else {
width = 21;
compact = 1;
}
} else
width = 22;
if (use_sysctl)
pcblist = getpcblist_sysctl(name, &len);
else
pcblist = getpcblist_kmem(off, name, &len);
for (i = 0; i < len; i++) {
struct sockaddr_in src, dst;
memcpy(&src, &pcblist[i].ki_s, sizeof(src));
memcpy(&dst, &pcblist[i].ki_d, sizeof(dst));
if (!aflag &&
inet_lnaof(dst.sin_addr) == INADDR_ANY)
continue;
if (first) {
protoprhdr();
first = 0;
}
protopr0((intptr_t) pcblist[i].ki_ppcbaddr,
pcblist[i].ki_rcvq, pcblist[i].ki_sndq,
&src.sin_addr, src.sin_port,
&dst.sin_addr, dst.sin_port,
pcblist[i].ki_tstate, name,
pcblist[i].ki_pflags, NULL);
}
free(pcblist);
if (strcmp(name, "tcp") == 0) {
struct timeval t;
timebase(&t);
gettimeofday(&now, NULL);
timersub(&now, &t, &now);
show_vtw_v4(print_vtw_v4);
}
}
/*
* Dump TCP statistics structure.
*/
void
tcp_stats(u_long off, const char *name)
{
uint64_t tcpstat[TCP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(tcpstat);
if (sysctlbyname("net.inet.tcp.stats", tcpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf ("%s:\n", name);
#define ps(f, m) if (tcpstat[f] || sflag <= 1) \
printf(m, tcpstat[f])
#define p(f, m) if (tcpstat[f] || sflag <= 1) \
printf(m, tcpstat[f], plural(tcpstat[f]))
#define p2(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \
printf(m, tcpstat[f1], plural(tcpstat[f1]), \
tcpstat[f2], plural(tcpstat[f2]))
#define p2s(f1, f2, m) if (tcpstat[f1] || tcpstat[f2] || sflag <= 1) \
printf(m, tcpstat[f1], plural(tcpstat[f1]), \
tcpstat[f2])
#define p3(f, m) if (tcpstat[f] || sflag <= 1) \
printf(m, tcpstat[f], plurales(tcpstat[f]))
p(TCP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n");
p2(TCP_STAT_SNDPACK,TCP_STAT_SNDBYTE,
"\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s)\n");
p2(TCP_STAT_SNDREXMITPACK, TCP_STAT_SNDREXMITBYTE,
"\t\t%" PRIu64 " data packet%s (%" PRIu64 " byte%s) retransmitted\n");
p2s(TCP_STAT_SNDACKS, TCP_STAT_DELACK,
"\t\t%" PRIu64 " ack-only packet%s (%" PRIu64 " delayed)\n");
p(TCP_STAT_SNDURG, "\t\t%" PRIu64 " URG only packet%s\n");
p(TCP_STAT_SNDPROBE, "\t\t%" PRIu64 " window probe packet%s\n");
p(TCP_STAT_SNDWINUP, "\t\t%" PRIu64 " window update packet%s\n");
p(TCP_STAT_SNDCTRL, "\t\t%" PRIu64 " control packet%s\n");
p(TCP_STAT_SELFQUENCH,
"\t\t%" PRIu64 " send attempt%s resulted in self-quench\n");
p(TCP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n");
p2(TCP_STAT_RCVACKPACK, TCP_STAT_RCVACKBYTE,
"\t\t%" PRIu64 " ack%s (for %" PRIu64 " byte%s)\n");
p(TCP_STAT_RCVDUPACK, "\t\t%" PRIu64 " duplicate ack%s\n");
p(TCP_STAT_RCVACKTOOMUCH, "\t\t%" PRIu64 " ack%s for unsent data\n");
p2(TCP_STAT_RCVPACK, TCP_STAT_RCVBYTE,
"\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) received in-sequence\n");
p2(TCP_STAT_RCVDUPPACK, TCP_STAT_RCVDUPBYTE,
"\t\t%" PRIu64 " completely duplicate packet%s (%" PRIu64 " byte%s)\n");
p(TCP_STAT_PAWSDROP, "\t\t%" PRIu64 " old duplicate packet%s\n");
p2(TCP_STAT_RCVPARTDUPPACK, TCP_STAT_RCVPARTDUPBYTE,
"\t\t%" PRIu64 " packet%s with some dup. data (%" PRIu64 " byte%s duped)\n");
p2(TCP_STAT_RCVOOPACK, TCP_STAT_RCVOOBYTE,
"\t\t%" PRIu64 " out-of-order packet%s (%" PRIu64 " byte%s)\n");
p2(TCP_STAT_RCVPACKAFTERWIN, TCP_STAT_RCVBYTEAFTERWIN,
"\t\t%" PRIu64 " packet%s (%" PRIu64 " byte%s) of data after window\n");
p(TCP_STAT_RCVWINPROBE, "\t\t%" PRIu64 " window probe%s\n");
p(TCP_STAT_RCVWINUPD, "\t\t%" PRIu64 " window update packet%s\n");
p(TCP_STAT_RCVAFTERCLOSE, "\t\t%" PRIu64 " packet%s received after close\n");
p(TCP_STAT_RCVBADSUM, "\t\t%" PRIu64 " discarded for bad checksum%s\n");
p(TCP_STAT_RCVBADOFF, "\t\t%" PRIu64 " discarded for bad header offset field%s\n");
ps(TCP_STAT_RCVSHORT, "\t\t%" PRIu64 " discarded because packet too short\n");
p(TCP_STAT_CONNATTEMPT, "\t%" PRIu64 " connection request%s\n");
p(TCP_STAT_ACCEPTS, "\t%" PRIu64 " connection accept%s\n");
p(TCP_STAT_CONNECTS,
"\t%" PRIu64 " connection%s established (including accepts)\n");
p2(TCP_STAT_CLOSED, TCP_STAT_DROPS,
"\t%" PRIu64 " connection%s closed (including %" PRIu64 " drop%s)\n");
p(TCP_STAT_CONNDROPS, "\t%" PRIu64 " embryonic connection%s dropped\n");
p(TCP_STAT_DELAYED_FREE, "\t%" PRIu64 " delayed free%s of tcpcb\n");
p2(TCP_STAT_RTTUPDATED, TCP_STAT_SEGSTIMED,
"\t%" PRIu64 " segment%s updated rtt (of %" PRIu64 " attempt%s)\n");
p(TCP_STAT_REXMTTIMEO, "\t%" PRIu64 " retransmit timeout%s\n");
p(TCP_STAT_TIMEOUTDROP,
"\t\t%" PRIu64 " connection%s dropped by rexmit timeout\n");
p2(TCP_STAT_PERSISTTIMEO, TCP_STAT_PERSISTDROPS,
"\t%" PRIu64 " persist timeout%s (resulting in %" PRIu64 " dropped "
"connection%s)\n");
p(TCP_STAT_KEEPTIMEO, "\t%" PRIu64 " keepalive timeout%s\n");
p(TCP_STAT_KEEPPROBE, "\t\t%" PRIu64 " keepalive probe%s sent\n");
p(TCP_STAT_KEEPDROPS, "\t\t%" PRIu64 " connection%s dropped by keepalive\n");
p(TCP_STAT_PREDACK, "\t%" PRIu64 " correct ACK header prediction%s\n");
p(TCP_STAT_PREDDAT, "\t%" PRIu64 " correct data packet header prediction%s\n");
p3(TCP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n");
ps(TCP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n");
p(TCP_STAT_CONNSDRAINED, "\t%" PRIu64 " connection%s drained due to memory "
"shortage\n");
p(TCP_STAT_PMTUBLACKHOLE, "\t%" PRIu64 " PMTUD blackhole%s detected\n");
p(TCP_STAT_BADSYN, "\t%" PRIu64 " bad connection attempt%s\n");
ps(TCP_STAT_SC_ADDED, "\t%" PRIu64 " SYN cache entries added\n");
p(TCP_STAT_SC_COLLISIONS, "\t\t%" PRIu64 " hash collision%s\n");
ps(TCP_STAT_SC_COMPLETED, "\t\t%" PRIu64 " completed\n");
ps(TCP_STAT_SC_ABORTED, "\t\t%" PRIu64 " aborted (no space to build PCB)\n");
ps(TCP_STAT_SC_TIMED_OUT, "\t\t%" PRIu64 " timed out\n");
ps(TCP_STAT_SC_OVERFLOWED, "\t\t%" PRIu64 " dropped due to overflow\n");
ps(TCP_STAT_SC_BUCKETOVERFLOW, "\t\t%" PRIu64 " dropped due to bucket overflow\n");
ps(TCP_STAT_SC_RESET, "\t\t%" PRIu64 " dropped due to RST\n");
ps(TCP_STAT_SC_UNREACH, "\t\t%" PRIu64 " dropped due to ICMP unreachable\n");
ps(TCP_STAT_SC_DELAYED_FREE, "\t\t%" PRIu64 " delayed free of SYN cache "
"entries\n");
p(TCP_STAT_SC_RETRANSMITTED, "\t%" PRIu64 " SYN,ACK%s retransmitted\n");
p(TCP_STAT_SC_DUPESYN, "\t%" PRIu64 " duplicate SYN%s received for entries "
"already in the cache\n");
p(TCP_STAT_SC_DROPPED, "\t%" PRIu64 " SYN%s dropped (no route or no space)\n");
p(TCP_STAT_BADSIG, "\t%" PRIu64 " packet%s with bad signature\n");
p(TCP_STAT_GOODSIG, "\t%" PRIu64 " packet%s with good signature\n");
p(TCP_STAT_ECN_SHS, "\t%" PRIu64 " successful ECN handshake%s\n");
p(TCP_STAT_ECN_CE, "\t%" PRIu64 " packet%s with ECN CE bit\n");
p(TCP_STAT_ECN_ECT, "\t%" PRIu64 " packet%s ECN ECT(0) bit\n");
#undef p
#undef ps
#undef p2
#undef p2s
#undef p3
show_vtw_stats();
}
/*
* Dump UDP statistics structure.
*/
void
udp_stats(u_long off, const char *name)
{
uint64_t udpstat[UDP_NSTATS];
u_quad_t delivered;
if (use_sysctl) {
size_t size = sizeof(udpstat);
if (sysctlbyname("net.inet.udp.stats", udpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf ("%s:\n", name);
#define ps(f, m) if (udpstat[f] || sflag <= 1) \
printf(m, udpstat[f])
#define p(f, m) if (udpstat[f] || sflag <= 1) \
printf(m, udpstat[f], plural(udpstat[f]))
#define p3(f, m) if (udpstat[f] || sflag <= 1) \
printf(m, udpstat[f], plurales(udpstat[f]))
p(UDP_STAT_IPACKETS, "\t%" PRIu64 " datagram%s received\n");
ps(UDP_STAT_HDROPS, "\t%" PRIu64 " with incomplete header\n");
ps(UDP_STAT_BADLEN, "\t%" PRIu64 " with bad data length field\n");
ps(UDP_STAT_BADSUM, "\t%" PRIu64 " with bad checksum\n");
ps(UDP_STAT_NOPORT, "\t%" PRIu64 " dropped due to no socket\n");
p(UDP_STAT_NOPORTBCAST,
"\t%" PRIu64 " broadcast/multicast datagram%s dropped due to no socket\n");
ps(UDP_STAT_FULLSOCK, "\t%" PRIu64 " dropped due to full socket buffers\n");
delivered = udpstat[UDP_STAT_IPACKETS] -
udpstat[UDP_STAT_HDROPS] -
udpstat[UDP_STAT_BADLEN] -
udpstat[UDP_STAT_BADSUM] -
udpstat[UDP_STAT_NOPORT] -
udpstat[UDP_STAT_NOPORTBCAST] -
udpstat[UDP_STAT_FULLSOCK];
if (delivered || sflag <= 1)
printf("\t%" PRIu64 " delivered\n", delivered);
p3(UDP_STAT_PCBHASHMISS, "\t%" PRIu64 " PCB hash miss%s\n");
p(UDP_STAT_OPACKETS, "\t%" PRIu64 " datagram%s output\n");
#undef ps
#undef p
#undef p3
}
/*
* Dump IP statistics structure.
*/
void
ip_stats(u_long off, const char *name)
{
uint64_t ipstat[IP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(ipstat);
if (sysctlbyname("net.inet.ip.stats", ipstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
#define ps(f, m) if (ipstat[f] || sflag <= 1) \
printf(m, ipstat[f])
#define p(f, m) if (ipstat[f] || sflag <= 1) \
printf(m, ipstat[f], plural(ipstat[f]))
p(IP_STAT_TOTAL, "\t%" PRIu64 " total packet%s received\n");
p(IP_STAT_BADSUM, "\t%" PRIu64 " bad header checksum%s\n");
ps(IP_STAT_TOOSMALL, "\t%" PRIu64 " with size smaller than minimum\n");
ps(IP_STAT_TOOSHORT, "\t%" PRIu64 " with data size < data length\n");
ps(IP_STAT_TOOLONG, "\t%" PRIu64 " with length > max ip packet size\n");
ps(IP_STAT_BADHLEN, "\t%" PRIu64 " with header length < data size\n");
ps(IP_STAT_BADLEN, "\t%" PRIu64 " with data length < header length\n");
ps(IP_STAT_BADOPTIONS, "\t%" PRIu64 " with bad options\n");
ps(IP_STAT_BADVERS, "\t%" PRIu64 " with incorrect version number\n");
p(IP_STAT_FRAGMENTS, "\t%" PRIu64 " fragment%s received\n");
p(IP_STAT_FRAGDROPPED, "\t%" PRIu64 " fragment%s dropped (dup or out of space)\n");
p(IP_STAT_RCVMEMDROP, "\t%" PRIu64 " fragment%s dropped (out of ipqent)\n");
p(IP_STAT_BADFRAGS, "\t%" PRIu64 " malformed fragment%s dropped\n");
p(IP_STAT_FRAGTIMEOUT, "\t%" PRIu64 " fragment%s dropped after timeout\n");
p(IP_STAT_REASSEMBLED, "\t%" PRIu64 " packet%s reassembled ok\n");
p(IP_STAT_DELIVERED, "\t%" PRIu64 " packet%s for this host\n");
p(IP_STAT_NOPROTO, "\t%" PRIu64 " packet%s for unknown/unsupported protocol\n");
p(IP_STAT_FORWARD, "\t%" PRIu64 " packet%s forwarded");
p(IP_STAT_FASTFORWARD, " (%" PRIu64 " packet%s fast forwarded)");
if (ipstat[IP_STAT_FORWARD] || sflag <= 1)
putchar('\n');
p(IP_STAT_CANTFORWARD, "\t%" PRIu64 " packet%s not forwardable\n");
p(IP_STAT_REDIRECTSENT, "\t%" PRIu64 " redirect%s sent\n");
p(IP_STAT_NOGIF, "\t%" PRIu64 " packet%s no matching gif found\n");
p(IP_STAT_LOCALOUT, "\t%" PRIu64 " packet%s sent from this host\n");
p(IP_STAT_RAWOUT, "\t%" PRIu64 " packet%s sent with fabricated ip header\n");
p(IP_STAT_ODROPPED, "\t%" PRIu64 " output packet%s dropped due to no bufs, etc.\n");
p(IP_STAT_NOROUTE, "\t%" PRIu64 " output packet%s discarded due to no route\n");
p(IP_STAT_FRAGMENTED, "\t%" PRIu64 " output datagram%s fragmented\n");
p(IP_STAT_OFRAGMENTS, "\t%" PRIu64 " fragment%s created\n");
p(IP_STAT_CANTFRAG, "\t%" PRIu64 " datagram%s that can't be fragmented\n");
p(IP_STAT_BADADDR, "\t%" PRIu64 " datagram%s with bad address in header\n");
#undef ps
#undef p
}
/*
* Dump ICMP statistics.
*/
void
icmp_stats(u_long off, const char *name)
{
uint64_t icmpstat[ICMP_NSTATS];
int i, first;
if (use_sysctl) {
size_t size = sizeof(icmpstat);
if (sysctlbyname("net.inet.icmp.stats", icmpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
#define p(f, m) if (icmpstat[f] || sflag <= 1) \
printf(m, icmpstat[f], plural(icmpstat[f]))
p(ICMP_STAT_ERROR, "\t%" PRIu64 " call%s to icmp_error\n");
p(ICMP_STAT_OLDICMP,
"\t%" PRIu64 " error%s not generated because old message was icmp\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat[ICMP_STAT_OUTHIST + i] != 0) {
if (first) {
printf("\tOutput histogram:\n");
first = 0;
}
printf("\t\t%s: %" PRIu64 "\n", icmp_type[i],
icmpstat[ICMP_STAT_OUTHIST + i]);
}
p(ICMP_STAT_BADCODE, "\t%" PRIu64 " message%s with bad code fields\n");
p(ICMP_STAT_TOOSHORT, "\t%" PRIu64 " message%s < minimum length\n");
p(ICMP_STAT_CHECKSUM, "\t%" PRIu64 " bad checksum%s\n");
p(ICMP_STAT_BADLEN, "\t%" PRIu64 " message%s with bad length\n");
p(ICMP_STAT_BMCASTECHO, "\t%" PRIu64 " multicast echo request%s ignored\n");
p(ICMP_STAT_BMCASTTSTAMP, "\t%" PRIu64 " multicast timestamp request%s ignored\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat[ICMP_STAT_INHIST + i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %" PRIu64 "\n", icmp_type[i],
icmpstat[ICMP_STAT_INHIST + i]);
}
p(ICMP_STAT_REFLECT, "\t%" PRIu64 " message response%s generated\n");
p(ICMP_STAT_PMTUCHG, "\t%" PRIu64 " path MTU change%s\n");
#undef p
}
/*
* Dump IGMP statistics structure.
*/
void
igmp_stats(u_long off, const char *name)
{
uint64_t igmpstat[IGMP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(igmpstat);
if (sysctlbyname("net.inet.igmp.stats", igmpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
#define p(f, m) if (igmpstat[f] || sflag <= 1) \
printf(m, igmpstat[f], plural(igmpstat[f]))
#define py(f, m) if (igmpstat[f] || sflag <= 1) \
printf(m, igmpstat[f], igmpstat[f] != 1 ? "ies" : "y")
p(IGMP_STAT_RCV_TOTAL, "\t%" PRIu64 " message%s received\n");
p(IGMP_STAT_RCV_TOOSHORT, "\t%" PRIu64 " message%s received with too few bytes\n");
p(IGMP_STAT_RCV_BADSUM, "\t%" PRIu64 " message%s received with bad checksum\n");
py(IGMP_STAT_RCV_QUERIES, "\t%" PRIu64 " membership quer%s received\n");
py(IGMP_STAT_RCV_BADQUERIES, "\t%" PRIu64 " membership quer%s received with invalid field(s)\n");
p(IGMP_STAT_RCV_REPORTS, "\t%" PRIu64 " membership report%s received\n");
p(IGMP_STAT_RCV_BADREPORTS, "\t%" PRIu64 " membership report%s received with invalid field(s)\n");
p(IGMP_STAT_RCV_OURREPORTS, "\t%" PRIu64 " membership report%s received for groups to which we belong\n");
p(IGMP_STAT_SND_REPORTS, "\t%" PRIu64 " membership report%s sent\n");
#undef p
#undef py
}
/*
* Dump CARP statistics structure.
*/
void
carp_stats(u_long off, const char *name)
{
uint64_t carpstat[CARP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(carpstat);
if (sysctlbyname("net.inet.carp.stats", carpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
#define p(f, m) if (carpstat[f] || sflag <= 1) \
printf(m, carpstat[f], plural(carpstat[f]))
#define p2(f, m) if (carpstat[f] || sflag <= 1) \
printf(m, carpstat[f])
p(CARP_STAT_IPACKETS, "\t%" PRIu64 " packet%s received (IPv4)\n");
p(CARP_STAT_IPACKETS6, "\t%" PRIu64 " packet%s received (IPv6)\n");
p(CARP_STAT_BADIF,
"\t\t%" PRIu64 " packet%s discarded for bad interface\n");
p(CARP_STAT_BADTTL,
"\t\t%" PRIu64 " packet%s discarded for wrong TTL\n");
p(CARP_STAT_HDROPS, "\t\t%" PRIu64 " packet%s shorter than header\n");
p(CARP_STAT_BADSUM, "\t\t%" PRIu64
" packet%s discarded for bad checksum\n");
p(CARP_STAT_BADVER,
"\t\t%" PRIu64 " packet%s discarded with a bad version\n");
p2(CARP_STAT_BADLEN,
"\t\t%" PRIu64 " discarded because packet was too short\n");
p(CARP_STAT_BADAUTH,
"\t\t%" PRIu64 " packet%s discarded for bad authentication\n");
p(CARP_STAT_BADVHID, "\t\t%" PRIu64 " packet%s discarded for bad vhid\n");
p(CARP_STAT_BADADDRS, "\t\t%" PRIu64
" packet%s discarded because of a bad address list\n");
p(CARP_STAT_OPACKETS, "\t%" PRIu64 " packet%s sent (IPv4)\n");
p(CARP_STAT_OPACKETS6, "\t%" PRIu64 " packet%s sent (IPv6)\n");
p2(CARP_STAT_ONOMEM,
"\t\t%" PRIu64 " send failed due to mbuf memory error\n");
#undef p
#undef p2
}
/*
* Dump PIM statistics structure.
*/
void
pim_stats(u_long off, const char *name)
{
struct pimstat pimstat;
if (off == 0)
return;
if (kread(off, (char *)&pimstat, sizeof (pimstat)) != 0) {
/* XXX: PIM is probably not enabled in the kernel */
return;
}
printf("%s:\n", name);
#define p(f, m) if (pimstat.f || sflag <= 1) \
printf(m, pimstat.f, plural(pimstat.f))
p(pims_rcv_total_msgs, "\t%" PRIu64 " message%s received\n");
p(pims_rcv_total_bytes, "\t%" PRIu64 " byte%s received\n");
p(pims_rcv_tooshort, "\t%" PRIu64 " message%s received with too few bytes\n");
p(pims_rcv_badsum, "\t%" PRIu64 " message%s received with bad checksum\n");
p(pims_rcv_badversion, "\t%" PRIu64 " message%s received with bad version\n");
p(pims_rcv_registers_msgs, "\t%" PRIu64 " data register message%s received\n");
p(pims_rcv_registers_bytes, "\t%" PRIu64 " data register byte%s received\n");
p(pims_rcv_registers_wrongiif, "\t%" PRIu64 " data register message%s received on wrong iif\n");
p(pims_rcv_badregisters, "\t%" PRIu64 " bad register%s received\n");
p(pims_snd_registers_msgs, "\t%" PRIu64 " data register message%s sent\n");
p(pims_snd_registers_bytes, "\t%" PRIu64 " data register byte%s sent\n");
#undef p
}
/*
* Dump the ARP statistics structure.
*/
void
arp_stats(u_long off, const char *name)
{
uint64_t arpstat[ARP_NSTATS];
if (use_sysctl) {
size_t size = sizeof(arpstat);
if (sysctlbyname("net.inet.arp.stats", arpstat, &size,
NULL, 0) == -1)
return;
} else {
warnx("%s stats not available via KVM.", name);
return;
}
printf("%s:\n", name);
#define ps(f, m) if (arpstat[f] || sflag <= 1) \
printf(m, arpstat[f])
#define p(f, m) if (arpstat[f] || sflag <= 1) \
printf(m, arpstat[f], plural(arpstat[f]))
p(ARP_STAT_SNDTOTAL, "\t%" PRIu64 " packet%s sent\n");
p(ARP_STAT_SNDREPLY, "\t\t%" PRIu64 " reply packet%s\n");
p(ARP_STAT_SENDREQUEST, "\t\t%" PRIu64 " request packet%s\n");
p(ARP_STAT_RCVTOTAL, "\t%" PRIu64 " packet%s received\n");
p(ARP_STAT_RCVREPLY, "\t\t%" PRIu64 " reply packet%s\n");
p(ARP_STAT_RCVREQUEST, "\t\t%" PRIu64 " valid request packet%s\n");
p(ARP_STAT_RCVMCAST, "\t\t%" PRIu64 " broadcast/multicast packet%s\n");
p(ARP_STAT_RCVBADPROTO, "\t\t%" PRIu64 " packet%s with unknown protocol type\n");
p(ARP_STAT_RCVBADLEN, "\t\t%" PRIu64 " packet%s with bad (short) length\n");
p(ARP_STAT_RCVZEROTPA, "\t\t%" PRIu64 " packet%s with null target IP address\n");
p(ARP_STAT_RCVZEROSPA, "\t\t%" PRIu64 " packet%s with null source IP address\n");
ps(ARP_STAT_RCVNOINT, "\t\t%" PRIu64 " could not be mapped to an interface\n");
p(ARP_STAT_RCVLOCALSHA, "\t\t%" PRIu64 " packet%s sourced from a local hardware "
"address\n");
p(ARP_STAT_RCVBCASTSHA, "\t\t%" PRIu64 " packet%s with a broadcast "
"source hardware address\n");
p(ARP_STAT_RCVLOCALSPA, "\t\t%" PRIu64 " duplicate%s for a local IP address\n");
p(ARP_STAT_RCVOVERPERM, "\t\t%" PRIu64 " attempt%s to overwrite a static entry\n");
p(ARP_STAT_RCVOVERINT, "\t\t%" PRIu64 " packet%s received on wrong interface\n");
p(ARP_STAT_RCVOVER, "\t\t%" PRIu64 " entry%s overwritten\n");
p(ARP_STAT_RCVLENCHG, "\t\t%" PRIu64 " change%s in hardware address length\n");
p(ARP_STAT_DFRTOTAL, "\t%" PRIu64 " packet%s deferred pending ARP resolution\n");
ps(ARP_STAT_DFRSENT, "\t\t%" PRIu64 " sent\n");
ps(ARP_STAT_DFRDROPPED, "\t\t%" PRIu64 " dropped\n");
p(ARP_STAT_ALLOCFAIL, "\t%" PRIu64 " failure%s to allocate llinfo\n");
#undef ps
#undef p
}
/*
* Pretty print an Internet address (net address + port).
* Take numeric_addr and numeric_port into consideration.
*/
void
inetprint(struct in_addr *in, uint16_t port, const char *proto,
int port_numeric)
{
struct servent *sp = 0;
char line[80], *cp;
size_t space;
(void)snprintf(line, sizeof line, "%.*s.",
(Aflag && !numeric_addr) ? 12 : 16, inetname(in));
cp = strchr(line, '\0');
if (!port_numeric && port)
sp = getservbyport((int)port, proto);
space = sizeof line - (cp-line);
if (sp || port == 0)
(void)snprintf(cp, space, "%s", sp ? sp->s_name : "*");
else
(void)snprintf(cp, space, "%u", ntohs(port));
(void)printf(" %-*.*s", width, width, line);
}
/*
* Construct an Internet address representation.
* If numeric_addr has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
char *
inetname(struct in_addr *inp)
{
char *cp;
static char line[50];
struct hostent *hp;
struct netent *np;
static char domain[MAXHOSTNAMELEN + 1];
static int first = 1;
if (first && !numeric_addr) {
first = 0;
if (gethostname(domain, sizeof domain) == 0) {
domain[sizeof(domain) - 1] = '\0';
if ((cp = strchr(domain, '.')))
(void) strlcpy(domain, cp + 1, sizeof(domain));
else
domain[0] = 0;
} else
domain[0] = 0;
}
cp = 0;
if (!numeric_addr && inp->s_addr != INADDR_ANY) {
int net = inet_netof(*inp);
int lna = inet_lnaof(*inp);
if (lna == INADDR_ANY) {
np = getnetbyaddr(net, AF_INET);
if (np)
cp = np->n_name;
}
if (cp == 0) {
hp = gethostbyaddr((char *)inp, sizeof (*inp), AF_INET);
if (hp) {
if ((cp = strchr(hp->h_name, '.')) &&
!strcmp(cp + 1, domain))
*cp = 0;
cp = hp->h_name;
}
}
}
if (inp->s_addr == INADDR_ANY)
strlcpy(line, "*", sizeof line);
else if (cp)
strlcpy(line, cp, sizeof line);
else {
inp->s_addr = ntohl(inp->s_addr);
#define C(x) ((x) & 0xff)
(void)snprintf(line, sizeof line, "%u.%u.%u.%u",
C(inp->s_addr >> 24), C(inp->s_addr >> 16),
C(inp->s_addr >> 8), C(inp->s_addr));
#undef C
}
return (line);
}
/*
* Dump the contents of a TCP PCB.
*/
void
tcp_dump(u_long off, const char *name, u_long pcbaddr)
{
callout_impl_t *ci;
struct tcpcb tcpcb;
int i, hardticks;
struct kinfo_pcb *pcblist;
size_t j, len;
if (use_sysctl)
pcblist = getpcblist_sysctl(name, &len);
else
pcblist = getpcblist_kmem(off, name, &len);
for (j = 0; j < len; j++)
if (pcblist[j].ki_ppcbaddr == pcbaddr)
break;
free(pcblist);
if (j == len)
errx(1, "0x%lx is not a valid pcb address", pcbaddr);
kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb));
hardticks = get_hardticks();
printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr);
printf("Timers:\n");
for (i = 0; i < TCPT_NTIMERS; i++) {
char buf[128];
ci = (callout_impl_t *)&tcpcb.t_timer[i];
snprintb(buf, sizeof(buf), CALLOUT_FMT, ci->c_flags);
printf("\t%s\t%s", tcptimers[i], buf);
if (ci->c_flags & CALLOUT_PENDING)
printf("\t%d\n", ci->c_time - hardticks);
else
printf("\n");
}
printf("\n\n");
if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
printf("State: %d", tcpcb.t_state);
else
printf("State: %s", tcpstates[tcpcb.t_state]);
printf(", flags 0x%x, inpcb 0x%lx, in6pcb 0x%lx\n\n", tcpcb.t_flags,
(u_long)tcpcb.t_inpcb, (u_long)tcpcb.t_in6pcb);
printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift,
tcpcb.t_rxtcur, tcpcb.t_dupacks);
printf("peermss %u, ourmss %u, segsz %u, segqlen %u\n\n",
tcpcb.t_peermss, tcpcb.t_ourmss, tcpcb.t_segsz, tcpcb.t_segqlen);
printf("snd_una %u, snd_nxt %u, snd_up %u\n",
tcpcb.snd_una, tcpcb.snd_nxt, tcpcb.snd_up);
printf("snd_wl1 %u, snd_wl2 %u, iss %u, snd_wnd %lu\n\n",
tcpcb.snd_wl1, tcpcb.snd_wl2, tcpcb.iss, tcpcb.snd_wnd);
printf("rcv_wnd %lu, rcv_nxt %u, rcv_up %u, irs %u\n\n",
tcpcb.rcv_wnd, tcpcb.rcv_nxt, tcpcb.rcv_up, tcpcb.irs);
printf("rcv_adv %u, snd_max %u, snd_cwnd %lu, snd_ssthresh %lu\n",
tcpcb.rcv_adv, tcpcb.snd_max, tcpcb.snd_cwnd, tcpcb.snd_ssthresh);
printf("rcvtime %u, rtttime %u, rtseq %u, srtt %d, rttvar %d, "
"rttmin %d, max_sndwnd %lu\n\n", tcpcb.t_rcvtime, tcpcb.t_rtttime,
tcpcb.t_rtseq, tcpcb.t_srtt, tcpcb.t_rttvar, tcpcb.t_rttmin,
tcpcb.max_sndwnd);
printf("oobflags %d, iobc %d, softerror %d\n\n", tcpcb.t_oobflags,
tcpcb.t_iobc, tcpcb.t_softerror);
printf("snd_scale %d, rcv_scale %d, req_r_scale %d, req_s_scale %d\n",
tcpcb.snd_scale, tcpcb.rcv_scale, tcpcb.request_r_scale,
tcpcb.requested_s_scale);
printf("ts_recent %u, ts_regent_age %d, last_ack_sent %u\n",
tcpcb.ts_recent, tcpcb.ts_recent_age, tcpcb.last_ack_sent);
}
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