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NetBSD/usr.bin/netstat/inet.c

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/* $NetBSD: inet.c,v 1.45 2001/04/06 05:10:28 itojun 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. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the University of
* California, Berkeley and its contributors.
* 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.
*/
#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 1.45 2001/04/06 05:10:28 itojun Exp $");
#endif
#endif /* not lint */
#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 <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>
#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/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/udp_var.h>
#include <arpa/inet.h>
#include <netdb.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
struct inpcb inpcb;
struct tcpcb tcpcb;
struct socket sockb;
char *inetname __P((struct in_addr *));
void inetprint __P((struct in_addr *, u_int16_t, const char *, int));
/*
* 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;
void
protopr(off, name)
u_long off;
char *name;
{
struct inpcbtable table;
struct inpcb *head, *next, *prev;
struct inpcb inpcb;
int istcp, compact;
static int first = 1;
static char *shorttcpstates[] = {
"CLOSED", "LISTEN", "SYNSEN", "SYSRCV",
"ESTABL", "CLWAIT", "FWAIT1", "CLOSNG",
"LASTAK", "FWAIT2", "TMWAIT",
};
if (off == 0)
return;
istcp = strcmp(name, "tcp") == 0;
kread(off, (char *)&table, sizeof table);
prev = head =
(struct inpcb *)&((struct inpcbtable *)off)->inpt_queue.cqh_first;
next = table.inpt_queue.cqh_first;
compact = 0;
if (Aflag) {
if (!nflag)
width = 18;
else {
width = 21;
compact = 1;
}
} else
width = 22;
while (next != head) {
kread((u_long)next, (char *)&inpcb, sizeof inpcb);
if (inpcb.inp_queue.cqe_prev != prev) {
printf("???\n");
break;
}
prev = next;
next = inpcb.inp_queue.cqe_next;
if (!aflag &&
inet_lnaof(inpcb.inp_laddr) == INADDR_ANY)
continue;
kread((u_long)inpcb.inp_socket, (char *)&sockb, sizeof (sockb));
if (istcp) {
kread((u_long)inpcb.inp_ppcb,
(char *)&tcpcb, sizeof (tcpcb));
}
if (first) {
printf("Active Internet connections");
if (aflag)
printf(" (including servers)");
putchar('\n');
if (Aflag)
printf("%-8.8s ", "PCB");
printf("%-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");
first = 0;
}
if (Aflag) {
if (istcp)
printf("%8lx ", (u_long) inpcb.inp_ppcb);
else
printf("%8lx ", (u_long) prev);
}
printf("%-5.5s %6ld %6ld%s", name, sockb.so_rcv.sb_cc,
sockb.so_snd.sb_cc, compact ? "" : " ");
if (nflag) {
inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1);
inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 1);
} else if (inpcb.inp_flags & INP_ANONPORT) {
inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 1);
inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name, 0);
} else {
inetprint(&inpcb.inp_laddr, inpcb.inp_lport, name, 0);
inetprint(&inpcb.inp_faddr, inpcb.inp_fport, name,
inpcb.inp_lport != inpcb.inp_fport);
}
if (istcp) {
if (tcpcb.t_state < 0 || tcpcb.t_state >= TCP_NSTATES)
printf(" %d", tcpcb.t_state);
else
printf(" %s", compact ?
shorttcpstates[tcpcb.t_state] :
tcpstates[tcpcb.t_state]);
}
putchar('\n');
}
}
/*
* Dump TCP statistics structure.
*/
void
tcp_stats(off, name)
u_long off;
char *name;
{
struct tcpstat tcpstat;
if (off == 0)
return;
printf ("%s:\n", name);
kread(off, (char *)&tcpstat, sizeof (tcpstat));
#define ps(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, (unsigned long long)tcpstat.f)
#define p(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, (unsigned long long)tcpstat.f, plural(tcpstat.f))
#define p2(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \
(unsigned long long)tcpstat.f2, plural(tcpstat.f2))
#define p2s(f1, f2, m) if (tcpstat.f1 || tcpstat.f2 || sflag <= 1) \
printf(m, (unsigned long long)tcpstat.f1, plural(tcpstat.f1), \
(unsigned long long)tcpstat.f2)
#define p3(f, m) if (tcpstat.f || sflag <= 1) \
printf(m, (unsigned long long)tcpstat.f, plurales(tcpstat.f))
p(tcps_sndtotal, "\t%llu packet%s sent\n");
p2(tcps_sndpack,tcps_sndbyte,
"\t\t%llu data packet%s (%llu byte%s)\n");
p2(tcps_sndrexmitpack, tcps_sndrexmitbyte,
"\t\t%llu data packet%s (%llu byte%s) retransmitted\n");
p2s(tcps_sndacks, tcps_delack,
"\t\t%llu ack-only packet%s (%llu delayed)\n");
p(tcps_sndurg, "\t\t%llu URG only packet%s\n");
p(tcps_sndprobe, "\t\t%llu window probe packet%s\n");
p(tcps_sndwinup, "\t\t%llu window update packet%s\n");
p(tcps_sndctrl, "\t\t%llu control packet%s\n");
p(tcps_rcvtotal, "\t%llu packet%s received\n");
p2(tcps_rcvackpack, tcps_rcvackbyte,
"\t\t%llu ack%s (for %llu byte%s)\n");
p(tcps_rcvdupack, "\t\t%llu duplicate ack%s\n");
p(tcps_rcvacktoomuch, "\t\t%llu ack%s for unsent data\n");
p2(tcps_rcvpack, tcps_rcvbyte,
"\t\t%llu packet%s (%llu byte%s) received in-sequence\n");
p2(tcps_rcvduppack, tcps_rcvdupbyte,
"\t\t%llu completely duplicate packet%s (%llu byte%s)\n");
p(tcps_pawsdrop, "\t\t%llu old duplicate packet%s\n");
p2(tcps_rcvpartduppack, tcps_rcvpartdupbyte,
"\t\t%llu packet%s with some dup. data (%llu byte%s duped)\n");
p2(tcps_rcvoopack, tcps_rcvoobyte,
"\t\t%llu out-of-order packet%s (%llu byte%s)\n");
p2(tcps_rcvpackafterwin, tcps_rcvbyteafterwin,
"\t\t%llu packet%s (%llu byte%s) of data after window\n");
p(tcps_rcvwinprobe, "\t\t%llu window probe%s\n");
p(tcps_rcvwinupd, "\t\t%llu window update packet%s\n");
p(tcps_rcvafterclose, "\t\t%llu packet%s received after close\n");
p(tcps_rcvbadsum, "\t\t%llu discarded for bad checksum%s\n");
p(tcps_rcvbadoff, "\t\t%llu discarded for bad header offset field%s\n");
ps(tcps_rcvshort, "\t\t%llu discarded because packet too short\n");
p(tcps_connattempt, "\t%llu connection request%s\n");
p(tcps_accepts, "\t%llu connection accept%s\n");
p(tcps_connects,
"\t%llu connection%s established (including accepts)\n");
p2(tcps_closed, tcps_drops,
"\t%llu connection%s closed (including %llu drop%s)\n");
p(tcps_conndrops, "\t%llu embryonic connection%s dropped\n");
p2(tcps_rttupdated, tcps_segstimed,
"\t%llu segment%s updated rtt (of %llu attempt%s)\n");
p(tcps_rexmttimeo, "\t%llu retransmit timeout%s\n");
p(tcps_timeoutdrop,
"\t\t%llu connection%s dropped by rexmit timeout\n");
p2(tcps_persisttimeo, tcps_persistdrops,
"\t%llu persist timeout%s (resulting in %llu dropped "
"connection%s)\n");
p(tcps_keeptimeo, "\t%llu keepalive timeout%s\n");
p(tcps_keepprobe, "\t\t%llu keepalive probe%s sent\n");
p(tcps_keepdrops, "\t\t%llu connection%s dropped by keepalive\n");
p(tcps_predack, "\t%llu correct ACK header prediction%s\n");
p(tcps_preddat, "\t%llu correct data packet header prediction%s\n");
p3(tcps_pcbhashmiss, "\t%llu PCB hash miss%s\n");
ps(tcps_noport, "\t%llu dropped due to no socket\n");
p(tcps_connsdrained, "\t%llu connection%s drained due to memory "
"shortage\n");
p(tcps_badsyn, "\t%llu bad connection attempt%s\n");
ps(tcps_sc_added, "\t%llu SYN cache entries added\n");
p(tcps_sc_collisions, "\t\t%llu hash collision%s\n");
ps(tcps_sc_completed, "\t\t%llu completed\n");
ps(tcps_sc_aborted, "\t\t%llu aborted (no space to build PCB)\n");
ps(tcps_sc_timed_out, "\t\t%llu timed out\n");
ps(tcps_sc_overflowed, "\t\t%llu dropped due to overflow\n");
ps(tcps_sc_bucketoverflow, "\t\t%llu dropped due to bucket overflow\n");
ps(tcps_sc_reset, "\t\t%llu dropped due to RST\n");
ps(tcps_sc_unreach, "\t\t%llu dropped due to ICMP unreachable\n");
p(tcps_sc_retransmitted, "\t%llu SYN,ACK%s retransmitted\n");
p(tcps_sc_dupesyn, "\t%llu duplicate SYN%s received for entries "
"already in the cache\n");
p(tcps_sc_dropped, "\t%llu SYN%s dropped (no route or no space)\n");
#undef p
#undef ps
#undef p2
#undef p2s
#undef p3
}
/*
* Dump UDP statistics structure.
*/
void
udp_stats(off, name)
u_long off;
char *name;
{
struct udpstat udpstat;
u_quad_t delivered;
if (off == 0)
return;
printf("%s:\n", name);
kread(off, (char *)&udpstat, sizeof (udpstat));
#define ps(f, m) if (udpstat.f || sflag <= 1) \
printf(m, (unsigned long long)udpstat.f)
#define p(f, m) if (udpstat.f || sflag <= 1) \
printf(m, (unsigned long long)udpstat.f, plural(udpstat.f))
#define p3(f, m) if (udpstat.f || sflag <= 1) \
printf(m, (unsigned long long)udpstat.f, plurales(udpstat.f))
p(udps_ipackets, "\t%llu datagram%s received\n");
ps(udps_hdrops, "\t%llu with incomplete header\n");
ps(udps_badlen, "\t%llu with bad data length field\n");
ps(udps_badsum, "\t%llu with bad checksum\n");
ps(udps_noport, "\t%llu dropped due to no socket\n");
p(udps_noportbcast, "\t%llu broadcast/multicast datagram%s dropped due to no socket\n");
ps(udps_fullsock, "\t%llu dropped due to full socket buffers\n");
delivered = udpstat.udps_ipackets -
udpstat.udps_hdrops -
udpstat.udps_badlen -
udpstat.udps_badsum -
udpstat.udps_noport -
udpstat.udps_noportbcast -
udpstat.udps_fullsock;
if (delivered || sflag <= 1)
printf("\t%llu delivered\n", (unsigned long long)delivered);
p3(udps_pcbhashmiss, "\t%llu PCB hash miss%s\n");
p(udps_opackets, "\t%llu datagram%s output\n");
#undef ps
#undef p
#undef p3
}
/*
* Dump IP statistics structure.
*/
void
ip_stats(off, name)
u_long off;
char *name;
{
struct ipstat ipstat;
if (off == 0)
return;
kread(off, (char *)&ipstat, sizeof (ipstat));
printf("%s:\n", name);
#define ps(f, m) if (ipstat.f || sflag <= 1) \
printf(m, (unsigned long long)ipstat.f)
#define p(f, m) if (ipstat.f || sflag <= 1) \
printf(m, (unsigned long long)ipstat.f, plural(ipstat.f))
p(ips_total, "\t%llu total packet%s received\n");
p(ips_badsum, "\t%llu bad header checksum%s\n");
ps(ips_toosmall, "\t%llu with size smaller than minimum\n");
ps(ips_tooshort, "\t%llu with data size < data length\n");
ps(ips_toolong, "\t%llu with length > max ip packet size\n");
ps(ips_badhlen, "\t%llu with header length < data size\n");
ps(ips_badlen, "\t%llu with data length < header length\n");
ps(ips_badoptions, "\t%llu with bad options\n");
ps(ips_badvers, "\t%llu with incorrect version number\n");
p(ips_fragments, "\t%llu fragment%s received\n");
p(ips_fragdropped, "\t%llu fragment%s dropped (dup or out of space)\n");
p(ips_badfrags, "\t%llu malformed fragment%s dropped\n");
p(ips_fragtimeout, "\t%llu fragment%s dropped after timeout\n");
p(ips_reassembled, "\t%llu packet%s reassembled ok\n");
p(ips_delivered, "\t%llu packet%s for this host\n");
p(ips_noproto, "\t%llu packet%s for unknown/unsupported protocol\n");
p(ips_forward, "\t%llu packet%s forwarded");
p(ips_fastforward, " (%llu packet%s fast forwarded)");
if (ipstat.ips_forward || sflag <= 1)
putchar('\n');
p(ips_cantforward, "\t%llu packet%s not forwardable\n");
p(ips_redirectsent, "\t%llu redirect%s sent\n");
p(ips_localout, "\t%llu packet%s sent from this host\n");
p(ips_rawout, "\t%llu packet%s sent with fabricated ip header\n");
p(ips_odropped, "\t%llu output packet%s dropped due to no bufs, etc.\n");
p(ips_noroute, "\t%llu output packet%s discarded due to no route\n");
p(ips_fragmented, "\t%llu output datagram%s fragmented\n");
p(ips_ofragments, "\t%llu fragment%s created\n");
p(ips_cantfrag, "\t%llu datagram%s that can't be fragmented\n");
p(ips_badaddr, "\t%llu datagram%s with bad address in header\n");
#undef ps
#undef p
}
static char *icmpnames[] = {
"echo reply",
"#1",
"#2",
"destination unreachable",
"source quench",
"routing redirect",
"alternate host address",
"#7",
"echo",
"router advertisement",
"router solicitation",
"time exceeded",
"parameter problem",
"time stamp",
"time stamp reply",
"information request",
"information request reply",
"address mask request",
"address mask reply",
};
/*
* Dump ICMP statistics.
*/
void
icmp_stats(off, name)
u_long off;
char *name;
{
struct icmpstat icmpstat;
int i, first;
if (off == 0)
return;
kread(off, (char *)&icmpstat, sizeof (icmpstat));
printf("%s:\n", name);
#define p(f, m) if (icmpstat.f || sflag <= 1) \
printf(m, (unsigned long long)icmpstat.f, plural(icmpstat.f))
p(icps_error, "\t%llu call%s to icmp_error\n");
p(icps_oldicmp,
"\t%llu error%s not generated because old message was icmp\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat.icps_outhist[i] != 0) {
if (first) {
printf("\tOutput histogram:\n");
first = 0;
}
printf("\t\t%s: %llu\n", icmpnames[i],
(unsigned long long)icmpstat.icps_outhist[i]);
}
p(icps_badcode, "\t%llu message%s with bad code fields\n");
p(icps_tooshort, "\t%llu message%s < minimum length\n");
p(icps_checksum, "\t%llu bad checksum%s\n");
p(icps_badlen, "\t%llu message%s with bad length\n");
for (first = 1, i = 0; i < ICMP_MAXTYPE + 1; i++)
if (icmpstat.icps_inhist[i] != 0) {
if (first) {
printf("\tInput histogram:\n");
first = 0;
}
printf("\t\t%s: %llu\n", icmpnames[i],
(unsigned long long)icmpstat.icps_inhist[i]);
}
p(icps_reflect, "\t%llu message response%s generated\n");
p(icps_pmtuchg, "\t%llu path MTU change%s\n");
#undef p
}
/*
* Dump IGMP statistics structure.
*/
void
igmp_stats(off, name)
u_long off;
char *name;
{
struct igmpstat igmpstat;
if (off == 0)
return;
kread(off, (char *)&igmpstat, sizeof (igmpstat));
printf("%s:\n", name);
#define p(f, m) if (igmpstat.f || sflag <= 1) \
printf(m, (unsigned long long)igmpstat.f, plural(igmpstat.f))
#define py(f, m) if (igmpstat.f || sflag <= 1) \
printf(m, (unsigned long long)igmpstat.f, igmpstat.f != 1 ? "ies" : "y")
p(igps_rcv_total, "\t%llu message%s received\n");
p(igps_rcv_tooshort, "\t%llu message%s received with too few bytes\n");
p(igps_rcv_badsum, "\t%llu message%s received with bad checksum\n");
py(igps_rcv_queries, "\t%llu membership quer%s received\n");
py(igps_rcv_badqueries, "\t%llu membership quer%s received with invalid field(s)\n");
p(igps_rcv_reports, "\t%llu membership report%s received\n");
p(igps_rcv_badreports, "\t%llu membership report%s received with invalid field(s)\n");
p(igps_rcv_ourreports, "\t%llu membership report%s received for groups to which we belong\n");
p(igps_snd_reports, "\t%llu membership report%s sent\n");
#undef p
#undef py
}
/*
* Dump the ARP statistics structure.
*/
void
arp_stats(off, name)
u_long off;
char *name;
{
struct arpstat arpstat;
if (off == 0)
return;
kread(off, (char *)&arpstat, sizeof (arpstat));
printf("%s:\n", name);
#define ps(f, m) if (arpstat.f || sflag <= 1) \
printf(m, (unsigned long long)arpstat.f)
#define p(f, m) if (arpstat.f || sflag <= 1) \
printf(m, (unsigned long long)arpstat.f, plural(arpstat.f))
p(as_sndtotal, "\t%llu packet%s sent\n");
p(as_sndreply, "\t\t%llu reply packet%s\n");
p(as_sndrequest, "\t\t%llu request packet%s\n");
p(as_rcvtotal, "\t%llu packet%s received\n");
p(as_rcvreply, "\t\t%llu reply packet%s\n");
p(as_rcvrequest, "\t\t%llu valid request packet%s\n");
p(as_rcvmcast, "\t\t%llu broadcast/multicast packet%s\n");
p(as_rcvbadproto, "\t\t%llu packet%s with unknown protocol type\n");
p(as_rcvbadlen, "\t\t%llu packet%s with bad (short) length\n");
p(as_rcvzerotpa, "\t\t%llu packet%s with null target IP address\n");
p(as_rcvzerospa, "\t\t%llu packet%s with null source IP address\n");
ps(as_rcvnoint, "\t\t%llu could not be mapped to an interface\n");
p(as_rcvlocalsha, "\t\t%llu packet%s sourced from a local hardware "
"address\n");
p(as_rcvbcastsha, "\t\t%llu packet%s with a broadcast "
"source hardware address\n");
p(as_rcvlocalspa, "\t\t%llu duplicate%s for a local IP address\n");
p(as_rcvoverperm, "\t\t%llu attempt%s to overwrite a static entry\n");
p(as_rcvoverint, "\t\t%llu packet%s received on wrong interface\n");
p(as_rcvover, "\t\t%llu entry%s overwritten\n");
p(as_rcvlenchg, "\t\t%llu change%s in hardware address length\n");
p(as_dfrtotal, "\t%llu packet%s deferred pending ARP resolution\n");
ps(as_dfrsent, "\t\t%llu sent\n");
ps(as_dfrdropped, "\t\t%llu dropped\n");
p(as_allocfail, "\t%llu failure%s to allocate llinfo\n");
#undef ps
#undef p
}
/*
* Pretty print an Internet address (net address + port).
* If the nflag was specified, use numbers instead of names.
*/
void
inetprint(in, port, proto, numeric)
struct in_addr *in;
u_int16_t port;
const char *proto;
int numeric;
{
struct servent *sp = 0;
char line[80], *cp;
size_t space;
(void)snprintf(line, sizeof line, "%.*s.",
(Aflag && !nflag) ? 12 : 16, inetname(in));
cp = strchr(line, '\0');
if (!numeric && port)
sp = getservbyport((int)port, proto);
space = sizeof line - (cp-line);
if (sp || port == 0)
(void)snprintf(cp, space, "%.8s", sp ? sp->s_name : "*");
else
(void)snprintf(cp, space, "%u", ntohs(port));
(void)printf(" %-*.*s", width, width, line);
}
/*
* Construct an Internet address representation.
* If the nflag has been supplied, give
* numeric value, otherwise try for symbolic name.
*/
char *
inetname(inp)
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 && !nflag) {
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 (!nflag && 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)
strncpy(line, "*", sizeof line);
else if (cp)
strncpy(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
}
line[sizeof(line) - 1] = '\0';
return (line);
}
/*
* Dump the contents of a TCP PCB.
*/
void
tcp_dump(pcbaddr)
u_long pcbaddr;
{
struct tcpcb tcpcb;
int i;
kread(pcbaddr, (char *)&tcpcb, sizeof(tcpcb));
printf("TCP Protocol Control Block at 0x%08lx:\n\n", pcbaddr);
printf("Timers:\n");
for (i = 0; i < TCPT_NTIMERS; i++)
printf("\t%s: %u", tcptimers[i], tcpcb.t_timer[i]);
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\n\n", tcpcb.t_flags,
(u_long)tcpcb.t_inpcb);
printf("rxtshift %d, rxtcur %d, dupacks %d\n", tcpcb.t_rxtshift,
tcpcb.t_rxtcur, tcpcb.t_dupacks);
printf("peermss %u, ourmss %u, segsz %u\n\n", tcpcb.t_peermss,
tcpcb.t_ourmss, tcpcb.t_segsz);
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("idle %d, rtt %d, rtseq %u, srtt %d, rttvar %d, rttmin %d, "
"max_sndwnd %lu\n\n", tcpcb.t_idle, tcpcb.t_rtt, 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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