[unix-history] / usr / src / usr.sbin / trpt / trpt.c

/*
 * Copyright (c) 1983, 1988 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

#ifndef lint
char copyright[] =
"@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
 All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)trpt.c	5.6 (Berkeley) %G%";
#endif /* not lint */

#include <machine/pte.h>

#include <sys/param.h>
#include <sys/vmmac.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#define PRUREQUESTS
#include <sys/protosw.h>
#include <sys/file.h>

#include <net/route.h>
#include <net/if.h>

#include <netinet/in.h>
#include <netinet/in_pcb.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>
#include <netinet/ip_var.h>
#include <netinet/tcp.h>
#define TCPSTATES
#include <netinet/tcp_fsm.h>
#include <netinet/tcp_seq.h>
#define	TCPTIMERS
#include <netinet/tcp_timer.h>
#include <netinet/tcp_var.h>
#include <netinet/tcpip.h>
#define	TANAMES
#include <netinet/tcp_debug.h>

#include <arpa/inet.h>

#include <stdio.h>
#include <errno.h>
#include <nlist.h>

struct nlist nl[] = {
#define	N_TCP_DEBUG	0
	{ "_tcp_debug" },
#define	N_TCP_DEBX	1
	{ "_tcp_debx" },
#define	N_SYSMAP	2
	{ "_Sysmap" },
#define	N_SYSSIZE	3
	{ "_Syssize" },
	{ "" },
};

static struct pte *Sysmap;
static caddr_t tcp_pcbs[TCP_NDEBUG];
static n_time ntime;
static int aflag, kflag, memf, follow, sflag, tflag;

main(argc, argv)
	int argc;
	char **argv;
{
	extern char *optarg;
	extern int optind;
	int ch, i, jflag, npcbs, numeric();
	char *system, *core, *malloc();
	off_t lseek();

	jflag = npcbs = 0;
	while ((ch = getopt(argc, argv, "afjp:st")) != EOF)
		switch((char)ch) {
		case 'a':
			++aflag;
			break;
		case 'f':
			++follow;
			setlinebuf(stdout);
			break;
		case 'j':
			++jflag;
			break;
		case 'p':
			if (npcbs >= TCP_NDEBUG) {
				fputs("trpt: too many pcb's specified\n",
				    stderr);
				exit(1);
			}
			(void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
			break;
		case 's':
			++sflag;
			break;
		case 't':
			++tflag;
			break;
		case '?':
		default:
			fputs("usage: trpt [-afjst] [-p hex-address] [system [core]]\n", stderr);
			exit(1);
		}
	argc -= optind;
	argv += optind;

	core = "/dev/kmem";
	if (argc > 0) {
		system = *argv;
		argc--, argv++;
		if (argc > 0) {
			core = *argv;
			argc--, argv++;
			++kflag;
		}
	}
	else
		system = "/vmunix";

	if (nlist(system, nl) < 0 || !nl[0].n_value) {
		fprintf(stderr, "trpt: %s: no namelist\n", system);
		exit(1);
	}
	if ((memf = open(core, O_RDONLY)) < 0) {
		perror(core);
		exit(2);
	}
	if (kflag) {
		off_t off;

		Sysmap = (struct pte *)
		   malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
		if (!Sysmap) {
			fputs("arp: can't get memory for Sysmap.\n", stderr);
			exit(1);
		}
		off = nl[N_SYSMAP].n_value & ~KERNBASE;
		(void)lseek(memf, off, L_SET);
		(void)read(memf, (char *)Sysmap,
		    (int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
	}
	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
	    sizeof(tcp_debx)) {
		perror("trpt: tcp_debx");
		exit(3);
	}
	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
	    sizeof(tcp_debug)) {
		perror("trpt: tcp_debug");
		exit(3);
	}
	/*
	 * If no control blocks have been specified, figure
	 * out how many distinct one we have and summarize
	 * them in tcp_pcbs for sorting the trace records
	 * below.
	 */
	if (!npcbs) {
		for (i = 0; i < TCP_NDEBUG; i++) {
			register struct tcp_debug *td = &tcp_debug[i];
			register int j;

			if (td->td_tcb == 0)
				continue;
			for (j = 0; j < npcbs; j++)
				if (tcp_pcbs[j] == td->td_tcb)
					break;
			if (j >= npcbs)
				tcp_pcbs[npcbs++] = td->td_tcb;
		}
		if (!npcbs)
			exit(0);
	}
	qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
	if (jflag) {
		for (i = 0;;) {
			printf("%x", (int)tcp_pcbs[i]);
			if (++i == npcbs)
				break;
			fputs(", ", stdout);
		}
		putchar('\n');
	}
	else for (i = 0; i < npcbs; i++) {
		printf("\n%x:\n", (int)tcp_pcbs[i]);
		dotrace(tcp_pcbs[i]);
	}
	exit(0);
}

dotrace(tcpcb)
	register caddr_t tcpcb;
{
	register struct tcp_debug *td;
	register int i;
	int prev_debx = tcp_debx;

again:	if (--tcp_debx < 0)
		tcp_debx = TCP_NDEBUG - 1;
	for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
		td = &tcp_debug[i];
		if (tcpcb && td->td_tcb != tcpcb)
			continue;
		ntime = ntohl(td->td_time);
		tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
		    &td->td_ti, td->td_req);
		if (i == tcp_debx)
			goto done;
	}
	for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
		td = &tcp_debug[i];
		if (tcpcb && td->td_tcb != tcpcb)
			continue;
		ntime = ntohl(td->td_time);
		tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
		    &td->td_ti, td->td_req);
	}
done:	if (follow) {
		prev_debx = tcp_debx + 1;
		if (prev_debx >= TCP_NDEBUG)
			prev_debx = 0;
		do {
			sleep(1);
			(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
			if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
			    sizeof(tcp_debx)) {
				perror("trpt: tcp_debx");
				exit(3);
			}
		} while (tcp_debx == prev_debx);
		(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
		if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
		    sizeof(tcp_debug)) {
			perror("trpt: tcp_debug");
			exit(3);
		}
		goto again;
	}
}

/*
 * Tcp debug routines
 */
/*ARGSUSED*/
tcp_trace(act, ostate, atp, tp, ti, req)
	short act, ostate;
	struct tcpcb *atp, *tp;
	struct tcpiphdr *ti;
	int req;
{
	tcp_seq seq, ack;
	int flags, len, win, timer;

	printf("%03ld %s:%s ",(ntime/10) % 1000, tcpstates[ostate],
	    tanames[act]);
	switch (act) {
	case TA_INPUT:
	case TA_OUTPUT:
	case TA_DROP:
		if (aflag)
			printf("(src=%s,%u, dst=%s,%u)", inet_ntoa(ti->ti_src),
			    ntohs(ti->ti_sport), inet_ntoa(ti->ti_dst),
			    ntohs(ti->ti_dport));
		seq = ti->ti_seq;
		ack = ti->ti_ack;
		len = ti->ti_len;
		win = ti->ti_win;
		if (act == TA_OUTPUT) {
			seq = ntohl(seq);
			ack = ntohl(ack);
			len = ntohs(len);
			win = ntohs(win);
		}
		if (act == TA_OUTPUT)
			len -= sizeof(struct tcphdr);
		if (len)
			printf("[%lx..%lx)", seq, seq + len);
		else
			printf("%lx", seq);
		printf("@%lx", ack);
		if (win)
			printf("(win=%x)", win);
		flags = ti->ti_flags;
		if (flags) {
			register char *cp = "<";
#define	pf(flag) { \
	if (ti->ti_flags&flag) \
		printf("%s%s", cp, "f"); \
		cp = ","; \
	}
			pf(TH_SYN);
			pf(TH_ACK);
			pf(TH_FIN);
			pf(TH_RST);
			pf(TH_PUSH);
			pf(TH_URG);
			printf(">");
		}
		break;
	case TA_USER:
		timer = req >> 8;
		req &= 0xff;
		printf("%s", prurequests[req]);
		if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
			printf("<%s>", tcptimers[timer]);
		break;
	}
	printf(" -> %s", tcpstates[tp->t_state]);
	/* print out internal state of tp !?! */
	printf("\n");
	if (sflag) {
		printf("\trcv_nxt %lx rcv_wnd %x snd_una %lx snd_nxt %lx snd_max %lx\n",
		    tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
		    tp->snd_max);
		printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %x\n", tp->snd_wl1,
		    tp->snd_wl2, tp->snd_wnd);
	}
	/* print out timers? */
	if (tflag) {
		register char *cp = "\t";
		register int i;

		for (i = 0; i < TCPT_NTIMERS; i++) {
			if (tp->t_timer[i] == 0)
				continue;
			printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
			if (i == TCPT_REXMT)
				printf(" (t_rxtshft=%d)", tp->t_rxtshift);
			cp = ", ";
		}
		if (*cp != '\t')
			putchar('\n');
	}
}

numeric(c1, c2)
	caddr_t *c1, *c2;
{
	return(*c1 - *c2);
}

klseek(fd, base, off)
	int fd, off;
	off_t base;
{
	off_t lseek();

	if (kflag) {	/* get kernel pte */
		base &= ~KERNBASE;
		base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
	}
	(void)lseek(fd, base, off);
}
Commit	Line	Data
5ff67f98	1	/*
7c5704a5	2	* Copyright (c) 1983, 1988 Regents of the University of California.
f157d52e KB	3	* All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms are permitted
	6	* provided that the above copyright notice and this paragraph are
	7	* duplicated in all such forms and that any documentation,
	8	* advertising materials, and other materials related to such
	9	* distribution and use acknowledge that the software was developed
	10	* by the University of California, Berkeley. The name of the
	11	* University may not be used to endorse or promote products derived
	12	* from this software without specific prior written permission.
	13	* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
	14	* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
	15	* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
5ff67f98 DF	16	*/
	17
	18	#ifndef lint
	19	char copyright[] =
7c5704a5	20	"@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
5ff67f98	21	All rights reserved.\n";
7c5704a5	22	#endif /* not lint */
5ff67f98	23
9a3a7863	24	#ifndef lint
bb1dac50	25	static char sccsid[] = "@(#)trpt.c 5.6 (Berkeley) %G%";
7c5704a5 KB	26	#endif /* not lint */
	27
	28	#include <machine/pte.h>
9a3a7863 BJ	29
9a3a7863 BJ	30	#include <sys/param.h>
7c5704a5	31	#include <sys/vmmac.h>
9a3a7863 BJ	32	#include <sys/socket.h>
	33	#include <sys/socketvar.h>
	34	#define PRUREQUESTS
	35	#include <sys/protosw.h>
7c5704a5	36	#include <sys/file.h>
94a2d2a7	37
9a3a7863	38	#include <net/route.h>
9a3a7863	39	#include <net/if.h>
94a2d2a7 SL	40
	41	#include <netinet/in.h>
	42	#include <netinet/in_pcb.h>
	43	#include <netinet/in_systm.h>
	44	#include <netinet/ip.h>
	45	#include <netinet/ip_var.h>
	46	#include <netinet/tcp.h>
9a3a7863	47	#define TCPSTATES
94a2d2a7 SL	48	#include <netinet/tcp_fsm.h>
94a2d2a7 SL	49	#include <netinet/tcp_seq.h>
9a3a7863	50	#define TCPTIMERS
94a2d2a7 SL	51	#include <netinet/tcp_timer.h>
	52	#include <netinet/tcp_var.h>
	53	#include <netinet/tcpip.h>
9a3a7863	54	#define TANAMES
94a2d2a7	55	#include <netinet/tcp_debug.h>
9a3a7863	56
7d3cb675 SL	57	#include <arpa/inet.h>
7d3cb675 SL	58
eb0fbeab	59	#include <stdio.h>
94a2d2a7	60	#include <errno.h>
9a3a7863 BJ	61	#include <nlist.h>
9a3a7863 BJ	62
7c5704a5 KB	63	struct nlist nl[] = {
7c5704a5 KB	64	#define N_TCP_DEBUG 0
9a3a7863	65	{ "_tcp_debug" },
7c5704a5	66	#define N_TCP_DEBX 1
9a3a7863	67	{ "_tcp_debx" },
7c5704a5 KB	68	#define N_SYSMAP 2
	69	{ "_Sysmap" },
	70	#define N_SYSSIZE 3
	71	{ "_Syssize" },
	72	{ "" },
9a3a7863	73	};
7c5704a5	74
bb1dac50 KB	75	static struct pte *Sysmap;
	76	static caddr_t tcp_pcbs[TCP_NDEBUG];
	77	static n_time ntime;
	78	static int aflag, kflag, memf, follow, sflag, tflag;
9a3a7863 BJ	79
	80	main(argc, argv)
	81	int argc;
	82	char **argv;
	83	{
7c5704a5 KB	84	extern char *optarg;
	85	extern int optind;
	86	int ch, i, jflag, npcbs, numeric();
	87	char system, core, *malloc();
	88	off_t lseek();
9a3a7863	89
7c5704a5 KB	90	jflag = npcbs = 0;
	91	while ((ch = getopt(argc, argv, "afjp:st")) != EOF)
	92	switch((char)ch) {
	93	case 'a':
	94	++aflag;
	95	break;
	96	case 'f':
	97	++follow;
	98	setlinebuf(stdout);
	99	break;
	100	case 'j':
	101	++jflag;
	102	break;
	103	case 'p':
	104	if (npcbs >= TCP_NDEBUG) {
	105	fputs("trpt: too many pcb's specified\n",
	106	stderr);
	107	exit(1);
	108	}
	109	(void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
	110	break;
	111	case 's':
	112	++sflag;
	113	break;
	114	case 't':
	115	++tflag;
	116	break;
	117	case '?':
	118	default:
	119	fputs("usage: trpt [-afjst] [-p hex-address] [system [core]]\n", stderr);
175d35a6 SL	120	exit(1);
175d35a6 SL	121	}
7c5704a5 KB	122	argc -= optind;
	123	argv += optind;
	124
	125	core = "/dev/kmem";
eb0fbeab SL	126	if (argc > 0) {
	127	system = *argv;
	128	argc--, argv++;
7c5704a5 KB	129	if (argc > 0) {
	130	core = *argv;
	131	argc--, argv++;
	132	++kflag;
	133	}
eb0fbeab	134	}
7c5704a5 KB	135	else
	136	system = "/vmunix";
	137
	138	if (nlist(system, nl) < 0 \|\| !nl[0].n_value) {
eb0fbeab	139	fprintf(stderr, "trpt: %s: no namelist\n", system);
9a3a7863 BJ	140	exit(1);
9a3a7863 BJ	141	}
7c5704a5 KB	142	if ((memf = open(core, O_RDONLY)) < 0) {
7c5704a5 KB	143	perror(core);
eb0fbeab SL	144	exit(2);
eb0fbeab SL	145	}
7c5704a5 KB	146	if (kflag) {
	147	off_t off;
	148
	149	Sysmap = (struct pte *)
	150	malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
	151	if (!Sysmap) {
	152	fputs("arp: can't get memory for Sysmap.\n", stderr);
	153	exit(1);
	154	}
	155	off = nl[N_SYSMAP].n_value & ~KERNBASE;
	156	(void)lseek(memf, off, L_SET);
	157	(void)read(memf, (char *)Sysmap,
	158	(int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
9a3a7863	159	}
7c5704a5 KB	160	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
	161	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
	162	sizeof(tcp_debx)) {
	163	perror("trpt: tcp_debx");
eb0fbeab SL	164	exit(3);
eb0fbeab SL	165	}
7c5704a5 KB	166	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
	167	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
	168	sizeof(tcp_debug)) {
	169	perror("trpt: tcp_debug");
eb0fbeab SL	170	exit(3);
eb0fbeab SL	171	}
175d35a6 SL	172	/*
	173	* If no control blocks have been specified, figure
	174	* out how many distinct one we have and summarize
	175	* them in tcp_pcbs for sorting the trace records
	176	* below.
	177	*/
7c5704a5	178	if (!npcbs) {
175d35a6	179	for (i = 0; i < TCP_NDEBUG; i++) {
175d35a6	180	register struct tcp_debug *td = &tcp_debug[i];
7c5704a5	181	register int j;
175d35a6 SL	182
	183	if (td->td_tcb == 0)
	184	continue;
	185	for (j = 0; j < npcbs; j++)
	186	if (tcp_pcbs[j] == td->td_tcb)
	187	break;
	188	if (j >= npcbs)
	189	tcp_pcbs[npcbs++] = td->td_tcb;
	190	}
7c5704a5 KB	191	if (!npcbs)
7c5704a5 KB	192	exit(0);
175d35a6	193	}
7c5704a5	194	qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
175d35a6	195	if (jflag) {
7c5704a5 KB	196	for (i = 0;;) {
	197	printf("%x", (int)tcp_pcbs[i]);
	198	if (++i == npcbs)
	199	break;
	200	fputs(", ", stdout);
175d35a6	201	}
7c5704a5	202	putchar('\n');
175d35a6	203	}
7c5704a5 KB	204	else for (i = 0; i < npcbs; i++) {
7c5704a5 KB	205	printf("\n%x:\n", (int)tcp_pcbs[i]);
175d35a6 SL	206	dotrace(tcp_pcbs[i]);
	207	}
	208	exit(0);
	209	}
	210
	211	dotrace(tcpcb)
	212	register caddr_t tcpcb;
	213	{
175d35a6	214	register struct tcp_debug *td;
7c5704a5	215	register int i;
89586647	216	int prev_debx = tcp_debx;
175d35a6	217
7c5704a5	218	again: if (--tcp_debx < 0)
89586647 MK	219	tcp_debx = TCP_NDEBUG - 1;
89586647 MK	220	for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
175d35a6	221	td = &tcp_debug[i];
eb0fbeab SL	222	if (tcpcb && td->td_tcb != tcpcb)
eb0fbeab SL	223	continue;
10ce0f6a	224	ntime = ntohl(td->td_time);
9a3a7863 BJ	225	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
9a3a7863 BJ	226	&td->td_ti, td->td_req);
89586647 MK	227	if (i == tcp_debx)
89586647 MK	228	goto done;
9a3a7863	229	}
89586647	230	for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
175d35a6	231	td = &tcp_debug[i];
eb0fbeab SL	232	if (tcpcb && td->td_tcb != tcpcb)
eb0fbeab SL	233	continue;
10ce0f6a	234	ntime = ntohl(td->td_time);
9a3a7863 BJ	235	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
	236	&td->td_ti, td->td_req);
	237	}
7c5704a5 KB	238	done: if (follow) {
	239	prev_debx = tcp_debx + 1;
	240	if (prev_debx >= TCP_NDEBUG)
	241	prev_debx = 0;
	242	do {
	243	sleep(1);
	244	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
	245	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
	246	sizeof(tcp_debx)) {
	247	perror("trpt: tcp_debx");
	248	exit(3);
	249	}
	250	} while (tcp_debx == prev_debx);
	251	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
	252	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
	253	sizeof(tcp_debug)) {
	254	perror("trpt: tcp_debug");
89586647 MK	255	exit(3);
89586647 MK	256	}
7c5704a5	257	goto again;
89586647	258	}
9a3a7863 BJ	259	}
	260
	261	/*
	262	* Tcp debug routines
	263	*/
7c5704a5	264	/ARGSUSED/
9a3a7863 BJ	265	tcp_trace(act, ostate, atp, tp, ti, req)
	266	short act, ostate;
	267	struct tcpcb atp, tp;
	268	struct tcpiphdr *ti;
	269	int req;
	270	{
	271	tcp_seq seq, ack;
7c5704a5	272	int flags, len, win, timer;
9a3a7863	273
7c5704a5 KB	274	printf("%03ld %s:%s ",(ntime/10) % 1000, tcpstates[ostate],
7c5704a5 KB	275	tanames[act]);
9a3a7863	276	switch (act) {
9a3a7863 BJ	277	case TA_INPUT:
9a3a7863 BJ	278	case TA_OUTPUT:
3cd6f35b	279	case TA_DROP:
7c5704a5 KB	280	if (aflag)
	281	printf("(src=%s,%u, dst=%s,%u)", inet_ntoa(ti->ti_src),
	282	ntohs(ti->ti_sport), inet_ntoa(ti->ti_dst),
	283	ntohs(ti->ti_dport));
9a3a7863 BJ	284	seq = ti->ti_seq;
	285	ack = ti->ti_ack;
	286	len = ti->ti_len;
	287	win = ti->ti_win;
9a3a7863 BJ	288	if (act == TA_OUTPUT) {
	289	seq = ntohl(seq);
	290	ack = ntohl(ack);
	291	len = ntohs(len);
	292	win = ntohs(win);
	293	}
9a3a7863	294	if (act == TA_OUTPUT)
7c5704a5	295	len -= sizeof(struct tcphdr);
9a3a7863	296	if (len)
7c5704a5	297	printf("[%lx..%lx)", seq, seq + len);
9a3a7863	298	else
7c5704a5 KB	299	printf("%lx", seq);
7c5704a5 KB	300	printf("@%lx", ack);
9a3a7863	301	if (win)
23c416d7	302	printf("(win=%x)", win);
9a3a7863 BJ	303	flags = ti->ti_flags;
9a3a7863 BJ	304	if (flags) {
7c5704a5 KB	305	register char *cp = "<";
	306	#define pf(flag) { \
	307	if (ti->ti_flags&flag) \
	308	printf("%s%s", cp, "f"); \
	309	cp = ","; \
	310	}
	311	pf(TH_SYN);
	312	pf(TH_ACK);
	313	pf(TH_FIN);
	314	pf(TH_RST);
	315	pf(TH_PUSH);
	316	pf(TH_URG);
9a3a7863 BJ	317	printf(">");
	318	}
	319	break;
9a3a7863	320	case TA_USER:
10ce0f6a SL	321	timer = req >> 8;
	322	req &= 0xff;
	323	printf("%s", prurequests[req]);
	324	if (req == PRU_SLOWTIMO \|\| req == PRU_FASTTIMO)
	325	printf("<%s>", tcptimers[timer]);
9a3a7863 BJ	326	break;
	327	}
	328	printf(" -> %s", tcpstates[tp->t_state]);
	329	/* print out internal state of tp !?! */
	330	printf("\n");
	331	if (sflag) {
7c5704a5	332	printf("\trcv_nxt %lx rcv_wnd %x snd_una %lx snd_nxt %lx snd_max %lx\n",
eb0fbeab SL	333	tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
eb0fbeab SL	334	tp->snd_max);
7c5704a5	335	printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %x\n", tp->snd_wl1,
eb0fbeab	336	tp->snd_wl2, tp->snd_wnd);
9a3a7863	337	}
175d35a6 SL	338	/* print out timers? */
175d35a6 SL	339	if (tflag) {
7c5704a5	340	register char *cp = "\t";
175d35a6 SL	341	register int i;
	342
	343	for (i = 0; i < TCPT_NTIMERS; i++) {
	344	if (tp->t_timer[i] == 0)
	345	continue;
	346	printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
	347	if (i == TCPT_REXMT)
	348	printf(" (t_rxtshft=%d)", tp->t_rxtshift);
	349	cp = ", ";
	350	}
	351	if (*cp != '\t')
	352	putchar('\n');
	353	}
9a3a7863 BJ	354	}
9a3a7863 BJ	355
7c5704a5 KB	356	numeric(c1, c2)
7c5704a5 KB	357	caddr_t c1, c2;
9a3a7863	358	{
7c5704a5	359	return(c1 - c2);
9a3a7863	360	}
175d35a6	361
7c5704a5 KB	362	klseek(fd, base, off)
	363	int fd, off;
	364	off_t base;
175d35a6	365	{
7c5704a5 KB	366	off_t lseek();
	367
	368	if (kflag) { /* get kernel pte */
	369	base &= ~KERNBASE;
	370	base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
	371	}
	372	(void)lseek(fd, base, off);
175d35a6	373	}