[unix-history] / 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, 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.
 */

#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[] = "From: @(#)trpt.c	5.14 (Berkeley) 7/1/91";
static const char rcsid[] =
	"$Id$";
#endif /* not lint */

#include <sys/param.h>
#if BSD >= 199103
#define NEWVM
#endif
#ifndef NEWVM
#include <machine/pte.h>
#include <sys/vmmac.h>
#endif
#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_systm.h>
#include <netinet/ip.h>
#include <netinet/in_pcb.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>
#include <paths.h>

struct   tcp_debug tcp_debug[TCP_NDEBUG];
int      tcp_debx;

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

#ifndef NEWVM
static struct pte *Sysmap;
#endif
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 (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:
			(void)fprintf(stderr,
"usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
			exit(1);
		}
	argc -= optind;
	argv += optind;

	core = _PATH_KMEM;
	if (argc > 0) {
		system = *argv;
		argc--, argv++;
		if (argc > 0) {
			core = *argv;
			argc--, argv++;
			++kflag;
		}
	}
	else
		system = _PATH_UNIX;

	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) {
#ifdef NEWVM
		fputs("trpt: can't do core files yet\n", stderr);
		exit(1);
#else
		off_t off;

		Sysmap = (struct pte *)
		   malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
		if (!Sysmap) {
			fputs("trpt: 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)));
#endif
	}
	(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, ",
			    inet_ntoa(ti->ti_src), ntohs(ti->ti_sport));
			printf("dst=%s,%u)",
			    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, string) { \
	if (ti->ti_flags&flag) { \
		(void)printf("%s%s", cp, string); \
		cp = ","; \
	} \
}
			pf(TH_SYN, "SYN");
			pf(TH_ACK, "ACK");
			pf(TH_FIN, "FIN");
			pf(TH_RST, "RST");
			pf(TH_PUSH, "PUSH");
			pf(TH_URG, "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();

#ifndef NEWVM
	if (kflag) {	/* get kernel pte */
		base &= ~KERNBASE;
		base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
	}
#endif
	(void)lseek(fd, base, off);
}
Commit	Line	Data
15637ed4 RG	1	/*
	2	* Copyright (c) 1983, 1988 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	*/
	33
	34	#ifndef lint
	35	char copyright[] =
	36	"@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\
	37	All rights reserved.\n";
	38	#endif /* not lint */
	39
	40	#ifndef lint
141aeac8 GW	41	static char sccsid[] = "From: @(#)trpt.c 5.14 (Berkeley) 7/1/91";
	42	static const char rcsid[] =
	43	"$Id$";
15637ed4 RG	44	#endif /* not lint */
	45
	46	#include <sys/param.h>
	47	#if BSD >= 199103
	48	#define NEWVM
	49	#endif
	50	#ifndef NEWVM
	51	#include <machine/pte.h>
	52	#include <sys/vmmac.h>
	53	#endif
	54	#include <sys/socket.h>
	55	#include <sys/socketvar.h>
	56	#define PRUREQUESTS
	57	#include <sys/protosw.h>
	58	#include <sys/file.h>
	59
	60	#include <net/route.h>
	61	#include <net/if.h>
	62
	63	#include <netinet/in.h>
	64	#include <netinet/in_systm.h>
	65	#include <netinet/ip.h>
	66	#include <netinet/in_pcb.h>
	67	#include <netinet/ip_var.h>
	68	#include <netinet/tcp.h>
	69	#define TCPSTATES
	70	#include <netinet/tcp_fsm.h>
	71	#include <netinet/tcp_seq.h>
	72	#define TCPTIMERS
	73	#include <netinet/tcp_timer.h>
	74	#include <netinet/tcp_var.h>
	75	#include <netinet/tcpip.h>
	76	#define TANAMES
	77	#include <netinet/tcp_debug.h>
	78
	79	#include <arpa/inet.h>
	80
	81	#include <stdio.h>
	82	#include <errno.h>
	83	#include <nlist.h>
	84	#include <paths.h>
	85
141aeac8 GW	86	struct tcp_debug tcp_debug[TCP_NDEBUG];
	87	int tcp_debx;
	88
15637ed4 RG	89	struct nlist nl[] = {
	90	#define N_TCP_DEBUG 0
	91	{ "_tcp_debug" },
	92	#define N_TCP_DEBX 1
	93	{ "_tcp_debx" },
	94	#ifndef NEWVM
	95	#define N_SYSMAP 2
	96	{ "_Sysmap" },
	97	#define N_SYSSIZE 3
	98	{ "_Syssize" },
	99	#endif
	100	{ "" },
	101	};
	102
	103	#ifndef NEWVM
	104	static struct pte *Sysmap;
	105	#endif
	106	static caddr_t tcp_pcbs[TCP_NDEBUG];
	107	static n_time ntime;
	108	static int aflag, kflag, memf, follow, sflag, tflag;
	109
	110	main(argc, argv)
	111	int argc;
	112	char **argv;
	113	{
	114	extern char *optarg;
	115	extern int optind;
	116	int ch, i, jflag, npcbs, numeric();
	117	char system, core, *malloc();
	118	off_t lseek();
	119
	120	jflag = npcbs = 0;
	121	while ((ch = getopt(argc, argv, "afjp:st")) != EOF)
	122	switch (ch) {
	123	case 'a':
	124	++aflag;
	125	break;
	126	case 'f':
	127	++follow;
	128	setlinebuf(stdout);
	129	break;
	130	case 'j':
	131	++jflag;
	132	break;
	133	case 'p':
	134	if (npcbs >= TCP_NDEBUG) {
	135	fputs("trpt: too many pcb's specified\n",
	136	stderr);
	137	exit(1);
	138	}
	139	(void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
	140	break;
	141	case 's':
	142	++sflag;
	143	break;
	144	case 't':
	145	++tflag;
	146	break;
	147	case '?':
	148	default:
	149	(void)fprintf(stderr,
	150	"usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
	151	exit(1);
	152	}
153	argc -= optind;
154	argv += optind;
155
156	core = _PATH_KMEM;
157	if (argc > 0) {
158	system = *argv;
159	argc--, argv++;
160	if (argc > 0) {
161	core = *argv;
162	argc--, argv++;
163	++kflag;
164	}
165	}
166	else
167	system = _PATH_UNIX;
168
169	if (nlist(system, nl) < 0 \|\| !nl[0].n_value) {
170	fprintf(stderr, "trpt: %s: no namelist\n", system);
171	exit(1);
172	}
173	if ((memf = open(core, O_RDONLY)) < 0) {
174	perror(core);
175	exit(2);
176	}
177	if (kflag) {
178	#ifdef NEWVM
179	fputs("trpt: can't do core files yet\n", stderr);
180	exit(1);
181	#else
182	off_t off;
183
184	Sysmap = (struct pte *)
185	malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
186	if (!Sysmap) {
187	fputs("trpt: can't get memory for Sysmap.\n", stderr);
188	exit(1);
189	}
190	off = nl[N_SYSMAP].n_value & ~KERNBASE;
191	(void)lseek(memf, off, L_SET);
192	(void)read(memf, (char *)Sysmap,
193	(int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
194	#endif
195	}
196	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
197	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
198	sizeof(tcp_debx)) {
199	perror("trpt: tcp_debx");
200	exit(3);
201	}
202	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
203	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
204	sizeof(tcp_debug)) {
205	perror("trpt: tcp_debug");
206	exit(3);
207	}
208	/*
209	* If no control blocks have been specified, figure
210	* out how many distinct one we have and summarize
211	* them in tcp_pcbs for sorting the trace records
212	* below.
213	*/
214	if (!npcbs) {
215	for (i = 0; i < TCP_NDEBUG; i++) {
216	register struct tcp_debug *td = &tcp_debug[i];
217	register int j;
218
219	if (td->td_tcb == 0)
220	continue;
221	for (j = 0; j < npcbs; j++)
222	if (tcp_pcbs[j] == td->td_tcb)
223	break;
224	if (j >= npcbs)
225	tcp_pcbs[npcbs++] = td->td_tcb;
226	}
227	if (!npcbs)
228	exit(0);
229	}
230	qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
231	if (jflag) {
232	for (i = 0;;) {
233	printf("%x", (int)tcp_pcbs[i]);
234	if (++i == npcbs)
235	break;
236	fputs(", ", stdout);
237	}
238	putchar('\n');
239	}
240	else for (i = 0; i < npcbs; i++) {
241	printf("\n%x:\n", (int)tcp_pcbs[i]);
242	dotrace(tcp_pcbs[i]);
243	}
244	exit(0);
245	}
246
247	dotrace(tcpcb)
248	register caddr_t tcpcb;
249	{
250	register struct tcp_debug *td;
251	register int i;
252	int prev_debx = tcp_debx;
253
254	again: if (--tcp_debx < 0)
255	tcp_debx = TCP_NDEBUG - 1;
256	for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
257	td = &tcp_debug[i];
258	if (tcpcb && td->td_tcb != tcpcb)
259	continue;
260	ntime = ntohl(td->td_time);
261	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
262	&td->td_ti, td->td_req);
263	if (i == tcp_debx)
264	goto done;
265	}
266	for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
267	td = &tcp_debug[i];
268	if (tcpcb && td->td_tcb != tcpcb)
269	continue;
270	ntime = ntohl(td->td_time);
271	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
272	&td->td_ti, td->td_req);
273	}
274	done: if (follow) {
275	prev_debx = tcp_debx + 1;
276	if (prev_debx >= TCP_NDEBUG)
277	prev_debx = 0;
278	do {
279	sleep(1);
280	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
281	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
282	sizeof(tcp_debx)) {
283	perror("trpt: tcp_debx");
284	exit(3);
285	}
286	} while (tcp_debx == prev_debx);
287	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
288	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
289	sizeof(tcp_debug)) {
290	perror("trpt: tcp_debug");
291	exit(3);
292	}
293	goto again;
294	}
295	}
296
297	/*
298	* Tcp debug routines
299	*/
300	/ARGSUSED/
301	tcp_trace(act, ostate, atp, tp, ti, req)
302	short act, ostate;
303	struct tcpcb atp, tp;
304	struct tcpiphdr *ti;
305	int req;
306	{
307	tcp_seq seq, ack;
308	int flags, len, win, timer;
309
310	printf("%03ld %s:%s ",(ntime/10) % 1000, tcpstates[ostate],
311	tanames[act]);
312	switch (act) {
313	case TA_INPUT:
314	case TA_OUTPUT:
315	case TA_DROP:
316	if (aflag) {
317	printf("(src=%s,%u, ",
318	inet_ntoa(ti->ti_src), ntohs(ti->ti_sport));
319	printf("dst=%s,%u)",
320	inet_ntoa(ti->ti_dst), ntohs(ti->ti_dport));
321	}
322	seq = ti->ti_seq;
323	ack = ti->ti_ack;
324	len = ti->ti_len;
325	win = ti->ti_win;
326	if (act == TA_OUTPUT) {
327	seq = ntohl(seq);
328	ack = ntohl(ack);
329	len = ntohs(len);
330	win = ntohs(win);
331	}
332	if (act == TA_OUTPUT)
333	len -= sizeof(struct tcphdr);
334	if (len)
335	printf("[%lx..%lx)", seq, seq + len);
336	else
337	printf("%lx", seq);
338	printf("@%lx", ack);
339	if (win)
340	printf("(win=%x)", win);
341	flags = ti->ti_flags;
342	if (flags) {
343	register char *cp = "<";
344	#define pf(flag, string) { \
345	if (ti->ti_flags&flag) { \
346	(void)printf("%s%s", cp, string); \
347	cp = ","; \
348	} \
349	}
350	pf(TH_SYN, "SYN");
351	pf(TH_ACK, "ACK");
352	pf(TH_FIN, "FIN");
353	pf(TH_RST, "RST");
354	pf(TH_PUSH, "PUSH");
355	pf(TH_URG, "URG");
356	printf(">");
357	}
358	break;
359	case TA_USER:
360	timer = req >> 8;
361	req &= 0xff;
362	printf("%s", prurequests[req]);
363	if (req == PRU_SLOWTIMO \|\| req == PRU_FASTTIMO)
364	printf("<%s>", tcptimers[timer]);
365	break;
366	}
367	printf(" -> %s", tcpstates[tp->t_state]);
368	/* print out internal state of tp !?! */
369	printf("\n");
370	if (sflag) {
371	printf("\trcv_nxt %lx rcv_wnd %x snd_una %lx snd_nxt %lx snd_max %lx\n",
372	tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
373	tp->snd_max);
374	printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %x\n", tp->snd_wl1,
375	tp->snd_wl2, tp->snd_wnd);
376	}
377	/* print out timers? */
378	if (tflag) {
379	register char *cp = "\t";
380	register int i;
381
382	for (i = 0; i < TCPT_NTIMERS; i++) {
383	if (tp->t_timer[i] == 0)
384	continue;
385	printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
386	if (i == TCPT_REXMT)
387	printf(" (t_rxtshft=%d)", tp->t_rxtshift);
388	cp = ", ";
389	}
390	if (*cp != '\t')
391	putchar('\n');
392	}
393	}
394
395	numeric(c1, c2)
396	caddr_t c1, c2;
397	{
398	return(c1 - c2);
399	}
400
401	klseek(fd, base, off)
402	int fd, off;
403	off_t base;
404	{
405	off_t lseek();
406
407	#ifndef NEWVM
408	if (kflag) { /* get kernel pte */
409	base &= ~KERNBASE;
410	base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
411	}
412	#endif
413	(void)lseek(fd, base, off);
414	}