[unix-history] / sys / netinet / tcp_debug.c

/*
 * Copyright (c) 1982, 1986 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.
 *
 *	from: @(#)tcp_debug.c	7.6 (Berkeley) 6/28/90
 *	$Id: tcp_debug.c,v 1.5 1993/12/13 11:07:43 chmr Exp $
 */

#ifdef TCPDEBUG
/* load symbolic names */
#define PRUREQUESTS
#define TCPSTATES
#define	TCPTIMERS
#define	TANAMES
#endif

#include "param.h"
#include "systm.h"
#include "mbuf.h"
#include "socket.h"
#include "socketvar.h"
#include "protosw.h"
#include "errno.h"

#include "../net/route.h"
#include "../net/if.h"

#include "in.h"
#include "in_systm.h"
#include "ip.h"
#include "in_pcb.h"
#include "ip_var.h"
#include "tcp.h"
#include "tcp_fsm.h"
#include "tcp_seq.h"
#include "tcp_timer.h"
#include "tcp_var.h"
#include "tcpip.h"
#include "tcp_debug.h"

struct	tcp_debug tcp_debug[TCP_NDEBUG];
int	tcp_debx;

/*
 * Tcp debug routines
 */
void
tcp_trace(act, ostate, tp, ti, req)
	short act, ostate;
	struct tcpcb *tp;
	struct tcpiphdr *ti;
	int req;
{
	tcp_seq seq, ack;
	int len, flags;
	struct tcp_debug *td = &tcp_debug[tcp_debx++];

	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));
	if (ti)
		td->td_ti = *ti;
	else
		bzero((caddr_t)&td->td_ti, sizeof (*ti));
	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 = ti->ti_seq;
		ack = ti->ti_ack;
		len = ti->ti_len;
		if (act == TA_OUTPUT) {
			seq = ntohl(seq);
			ack = ntohl(ack);
			len = ntohs((u_short)len);
		}
		if (act == TA_OUTPUT)
			len -= sizeof (struct tcphdr);
		if (len)
			printf("[%x..%x)", seq, seq+len);
		else
			printf("%x", seq);
		printf("@%x, urp=%x", ack, ti->ti_urp);
		flags = ti->ti_flags;
		if (flags) {
#ifndef lint
			char *cp = "<";
#define pf(f) { if (ti->ti_flags& TH_ ## f) { printf("%s" #f, cp); cp = ","; } }
			pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
#undef pf
#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 */
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1982, 1986 Regents of the University of California.
	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*
38e82238	33	* from: @(#)tcp_debug.c 7.6 (Berkeley) 6/28/90
fde1aeb2	34	* $Id: tcp_debug.c,v 1.5 1993/12/13 11:07:43 chmr Exp $
15637ed4 RG	35	*/
	36
	37	#ifdef TCPDEBUG
	38	/* load symbolic names */
	39	#define PRUREQUESTS
	40	#define TCPSTATES
	41	#define TCPTIMERS
	42	#define TANAMES
	43	#endif
	44
	45	#include "param.h"
	46	#include "systm.h"
	47	#include "mbuf.h"
	48	#include "socket.h"
	49	#include "socketvar.h"
	50	#include "protosw.h"
	51	#include "errno.h"
	52
	53	#include "../net/route.h"
	54	#include "../net/if.h"
	55
	56	#include "in.h"
	57	#include "in_systm.h"
	58	#include "ip.h"
	59	#include "in_pcb.h"
	60	#include "ip_var.h"
	61	#include "tcp.h"
	62	#include "tcp_fsm.h"
	63	#include "tcp_seq.h"
	64	#include "tcp_timer.h"
	65	#include "tcp_var.h"
	66	#include "tcpip.h"
	67	#include "tcp_debug.h"
	68
8ace4366 GW	69	struct tcp_debug tcp_debug[TCP_NDEBUG];
	70	int tcp_debx;
	71
15637ed4 RG	72	/*
	73	* Tcp debug routines
	74	*/
4c45483e	75	void
15637ed4 RG	76	tcp_trace(act, ostate, tp, ti, req)
	77	short act, ostate;
	78	struct tcpcb *tp;
	79	struct tcpiphdr *ti;
	80	int req;
	81	{
	82	tcp_seq seq, ack;
	83	int len, flags;
	84	struct tcp_debug *td = &tcp_debug[tcp_debx++];
	85
	86	if (tcp_debx == TCP_NDEBUG)
	87	tcp_debx = 0;
	88	td->td_time = iptime();
	89	td->td_act = act;
	90	td->td_ostate = ostate;
	91	td->td_tcb = (caddr_t)tp;
	92	if (tp)
	93	td->td_cb = *tp;
	94	else
	95	bzero((caddr_t)&td->td_cb, sizeof (*tp));
	96	if (ti)
	97	td->td_ti = *ti;
	98	else
	99	bzero((caddr_t)&td->td_ti, sizeof (*ti));
	100	td->td_req = req;
	101	#ifdef TCPDEBUG
	102	if (tcpconsdebug == 0)
	103	return;
	104	if (tp)
	105	printf("%x %s:", tp, tcpstates[ostate]);
	106	else
	107	printf("???????? ");
	108	printf("%s ", tanames[act]);
	109	switch (act) {
	110
	111	case TA_INPUT:
	112	case TA_OUTPUT:
	113	case TA_DROP:
	114	if (ti == 0)
	115	break;
	116	seq = ti->ti_seq;
	117	ack = ti->ti_ack;
	118	len = ti->ti_len;
	119	if (act == TA_OUTPUT) {
	120	seq = ntohl(seq);
	121	ack = ntohl(ack);
	122	len = ntohs((u_short)len);
	123	}
	124	if (act == TA_OUTPUT)
	125	len -= sizeof (struct tcphdr);
	126	if (len)
	127	printf("[%x..%x)", seq, seq+len);
	128	else
	129	printf("%x", seq);
	130	printf("@%x, urp=%x", ack, ti->ti_urp);
	131	flags = ti->ti_flags;
	132	if (flags) {
	133	#ifndef lint
	134	char *cp = "<";
fde1aeb2	135	#define pf(f) { if (ti->ti_flags& TH_ ## f) { printf("%s" #f, cp); cp = ","; } }
15637ed4	136	pf(SYN); pf(ACK); pf(FIN); pf(RST); pf(PUSH); pf(URG);
f43a60dc	137	#undef pf
15637ed4 RG	138	#endif
	139	printf(">");
	140	}
	141	break;
	142
	143	case TA_USER:
	144	printf("%s", prurequests[req&0xff]);
	145	if ((req & 0xff) == PRU_SLOWTIMO)
	146	printf("<%s>", tcptimers[req>>8]);
	147	break;
	148	}
	149	if (tp)
	150	printf(" -> %s", tcpstates[tp->t_state]);
	151	/* print out internal state of tp !?! */
	152	printf("\n");
	153	if (tp == 0)
	154	return;
	155	printf("\trcv_(nxt,wnd,up) (%x,%x,%x) snd_(una,nxt,max) (%x,%x,%x)\n",
	156	tp->rcv_nxt, tp->rcv_wnd, tp->rcv_up, tp->snd_una, tp->snd_nxt,
	157	tp->snd_max);
	158	printf("\tsnd_(wl1,wl2,wnd) (%x,%x,%x)\n",
	159	tp->snd_wl1, tp->snd_wl2, tp->snd_wnd);
	160	#endif /* TCPDEBUG */
	161	}