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/* $OpenBSD: tcp_debug.c,v 1.8 2000/04/14 04:41:39 itojun Exp $ */
/* $NetBSD: tcp_debug.c,v 1.10 1996/02/13 23:43:36 christos Exp $ */
/*
* Copyright (c) 1982, 1986, 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.
*
* @(#)tcp_debug.c 8.1 (Berkeley) 6/10/93
*/
/*
%%% portions-copyright-nrl-95
Portions of this software are Copyright 1995-1998 by Randall Atkinson,
Ronald Lee, Daniel McDonald, Bao Phan, and Chris Winters. All Rights
Reserved. All rights under this copyright have been assigned to the US
Naval Research Laboratory (NRL). The NRL Copyright Notice and License
Agreement Version 1.1 (January 17, 1995) applies to these portions of the
software.
You should have received a copy of the license with this software. If you
didn't get a copy, you may request one from <license@ipv6.nrl.navy.mil>.
*/
#ifdef TCPDEBUG
/* load symbolic names */
#define PRUREQUESTS
#define TCPSTATES
#define TCPTIMERS
#define TANAMES
#endif
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mbuf.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <sys/protosw.h>
#include <sys/errno.h>
#include <net/route.h>
#include <net/if.h>
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_seq.h>
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcpip.h>
#include <netinet/tcp_debug.h>
#ifdef INET6
#ifndef INET
#include <netinet/in.h>
#endif
#include <netinet/ip6.h>
#endif /* INET6 */
#ifdef TCPDEBUG
int tcpconsdebug = 0;
#endif
/*
* Tcp debug routines
*/
void
tcp_trace(act, ostate, tp, headers, req, len)
short act, ostate;
struct tcpcb *tp;
caddr_t headers;
int req;
int len;
{
#ifdef TCPDEBUG
tcp_seq seq, ack;
int flags;
#endif
struct tcp_debug *td = &tcp_debug[tcp_debx++];
struct tcpiphdr *ti = (struct tcpiphdr *)headers;
struct tcphdr *th;
#ifdef INET6
struct tcpipv6hdr *ti6 = (struct tcpipv6hdr *)ti;
#endif
if (tcp_debx == TCP_NDEBUG)
tcp_debx = 0;
td->td_time = iptime();
td->td_act = act;
td->td_ostate = ostate;
td->td_tcb = (caddr_t)tp;
if (tp)
td->td_cb = *tp;
else
bzero((caddr_t)&td->td_cb, sizeof (*tp));
#ifdef INET6
if (tp->pf == PF_INET6) {
if (ti) {
th = &ti6->ti6_t;
td->td_ti6 = *ti6;
} else {
bzero(&td->td_ti6, sizeof(struct tcpipv6hdr));
}
} else
#endif /* INET6 */
{
if (ti) {
th = &ti->ti_t;
td->td_ti = *ti;
} else {
bzero(&td->td_ti, sizeof(struct tcpiphdr));
}
}
td->td_req = req;
#ifdef TCPDEBUG
if (tcpconsdebug == 0)
return;
if (tp)
printf("%x %s:", tp, tcpstates[ostate]);
else
printf("???????? ");
printf("%s ", tanames[act]);
switch (act) {
case TA_INPUT:
case TA_OUTPUT:
case TA_DROP:
if (ti == 0)
break;
seq = th->th_seq;
ack = th->th_ack;
if (act == TA_OUTPUT) {
seq = ntohl(seq);
ack = ntohl(ack);
}
if (len)
printf("[%x..%x)", seq, seq+len);
else
printf("%x", seq);
printf("@%x, urp=%x", ack, th->th_urp);
flags = th->th_flags;
if (flags) {
#ifndef lint
char *cp = "<";
#define pf(f) { if (th->th_flags&TH_##f) { printf("%s%s", cp, "f"); cp = ","; } }
pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
#endif
printf(">");
}
break;
case TA_USER:
printf("%s", prurequests[req&0xff]);
if ((req & 0xff) == PRU_SLOWTIMO)
printf("<%s>", tcptimers[req>>8]);
break;
}
if (tp)
printf(" -> %s", tcpstates[tp->t_state]);
/* print out internal state of tp !?! */
printf("\n");
if (tp == 0)
return;
printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
tp->snd_max);
printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
#endif /* TCPDEBUG */
}
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