[apple/network_cmds.git] / trpt.tproj / trpt.c

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * Copyright (c) 1999-2003 Apple Computer, Inc.  All Rights Reserved.
 * 
 * This file contains Original Code and/or Modifications of Original Code
 * as defined in and that are subject to the Apple Public Source License
 * Version 2.0 (the 'License'). You may not use this file except in
 * compliance with the License. Please obtain a copy of the License at
 * http://www.opensource.apple.com/apsl/ and read it before using this
 * file.
 * 
 * The Original Code and all software distributed under the License are
 * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
 * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
 * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
 * Please see the License for the specific language governing rights and
 * limitations under the License.
 * 
 * @APPLE_LICENSE_HEADER_END@
 */
/*
 * 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.
 */

#ifndef lint
static char copyright[] =
"@(#) Copyright (c) 1983, 1988, 1993\n\
	The Regents of the University of California.  All rights reserved.\n";
#endif /* not lint */

#ifndef lint
static char sccsid[] = "@(#)trpt.c	8.1 (Berkeley) 6/6/93";
#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;
		}
		/*
		 * Discard setgid privileges if not the running kernel so that
		 * bad guys can't print interesting stuff from kernel memory.
		 */
		setgid(getgid());
	}
	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.ti_t, 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.ti_t, 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
b7080c8e A	1	/*
	2	* Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
	3	*
	4	* @APPLE_LICENSE_HEADER_START@
	5	*
ac2f15b3 A	6	* Copyright (c) 1999-2003 Apple Computer, Inc. All Rights Reserved.
	7	*
	8	* This file contains Original Code and/or Modifications of Original Code
	9	* as defined in and that are subject to the Apple Public Source License
	10	* Version 2.0 (the 'License'). You may not use this file except in
	11	* compliance with the License. Please obtain a copy of the License at
	12	* http://www.opensource.apple.com/apsl/ and read it before using this
	13	* file.
b7080c8e A	14	*
	15	* The Original Code and all software distributed under the License are
	16	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	17	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	18	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
ac2f15b3 A	19	* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
	20	* Please see the License for the specific language governing rights and
	21	* limitations under the License.
b7080c8e A	22	*
	23	* @APPLE_LICENSE_HEADER_END@
	24	*/
	25	/*
	26	* Copyright (c) 1983, 1988, 1993
	27	* The Regents of the University of California. All rights reserved.
	28	*
	29	* Redistribution and use in source and binary forms, with or without
	30	* modification, are permitted provided that the following conditions
	31	* are met:
	32	* 1. Redistributions of source code must retain the above copyright
	33	* notice, this list of conditions and the following disclaimer.
	34	* 2. Redistributions in binary form must reproduce the above copyright
	35	* notice, this list of conditions and the following disclaimer in the
	36	* documentation and/or other materials provided with the distribution.
	37	* 3. All advertising materials mentioning features or use of this software
	38	* must display the following acknowledgement:
	39	* This product includes software developed by the University of
	40	* California, Berkeley and its contributors.
	41	* 4. Neither the name of the University nor the names of its contributors
	42	* may be used to endorse or promote products derived from this software
	43	* without specific prior written permission.
	44	*
	45	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	46	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	47	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	48	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	49	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	50	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	51	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	52	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	53	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	54	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	55	* SUCH DAMAGE.
	56	*/
	57
	58	#ifndef lint
	59	static char copyright[] =
	60	"@(#) Copyright (c) 1983, 1988, 1993\n\
	61	The Regents of the University of California. All rights reserved.\n";
	62	#endif /* not lint */
	63
	64	#ifndef lint
	65	static char sccsid[] = "@(#)trpt.c 8.1 (Berkeley) 6/6/93";
	66	#endif /* not lint */
	67
	68	#include <sys/param.h>
	69	#if BSD >= 199103
	70	#define NEWVM
	71	#endif
	72	#ifndef NEWVM
	73	#include <machine/pte.h>
	74	#include <sys/vmmac.h>
	75	#endif
	76	#include <sys/socket.h>
	77	#include <sys/socketvar.h>
	78	#define PRUREQUESTS
	79	#include <sys/protosw.h>
	80	#include <sys/file.h>
	81
	82	#include <net/route.h>
	83	#include <net/if.h>
	84
	85	#include <netinet/in.h>
86	#include <netinet/in_systm.h>
87	#include <netinet/ip.h>
88	#include <netinet/in_pcb.h>
89	#include <netinet/ip_var.h>
90	#include <netinet/tcp.h>
91	#define TCPSTATES
92	#include <netinet/tcp_fsm.h>
93	#include <netinet/tcp_seq.h>
94	#define TCPTIMERS
95	#include <netinet/tcp_timer.h>
96	#include <netinet/tcp_var.h>
97	#include <netinet/tcpip.h>
98	#define TANAMES
99	#include <netinet/tcp_debug.h>
100
101	#include <arpa/inet.h>
102
103	#include <stdio.h>
104	#include <errno.h>
105	#include <nlist.h>
106	#include <paths.h>
107
108	struct tcp_debug tcp_debug[TCP_NDEBUG];
109	int tcp_debx;
110
111	struct nlist nl[] = {
112	#define N_TCP_DEBUG 0
113	{ "_tcp_debug" },
114	#define N_TCP_DEBX 1
115	{ "_tcp_debx" },
116	#ifndef NEWVM
117	#define N_SYSMAP 2
118	{ "_Sysmap" },
119	#define N_SYSSIZE 3
120	{ "_Syssize" },
121	#endif
122	{ "" },
123	};
124
125	#ifndef NEWVM
126	static struct pte *Sysmap;
127	#endif
128	static caddr_t tcp_pcbs[TCP_NDEBUG];
129	static n_time ntime;
130	static int aflag, kflag, memf, follow, sflag, tflag;
131
132	main(argc, argv)
133	int argc;
134	char **argv;
135	{
136	extern char *optarg;
137	extern int optind;
138	int ch, i, jflag, npcbs, numeric();
139	char system, core, *malloc();
140	off_t lseek();
141
142	jflag = npcbs = 0;
143	while ((ch = getopt(argc, argv, "afjp:st")) != EOF)
144	switch (ch) {
145	case 'a':
146	++aflag;
147	break;
148	case 'f':
149	++follow;
150	setlinebuf(stdout);
151	break;
152	case 'j':
153	++jflag;
154	break;
155	case 'p':
156	if (npcbs >= TCP_NDEBUG) {
157	fputs("trpt: too many pcb's specified\n",
158	stderr);
159	exit(1);
160	}
161	(void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
162	break;
163	case 's':
164	++sflag;
165	break;
166	case 't':
167	++tflag;
168	break;
169	case '?':
170	default:
171	(void)fprintf(stderr,
172	"usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
173	exit(1);
174	}
175	argc -= optind;
176	argv += optind;
177
178	core = _PATH_KMEM;
179	if (argc > 0) {
180	system = *argv;
181	argc--, argv++;
182	if (argc > 0) {
183	core = *argv;
184	argc--, argv++;
185	++kflag;
186	}
187	/*
188	* Discard setgid privileges if not the running kernel so that
189	* bad guys can't print interesting stuff from kernel memory.
190	*/
191	setgid(getgid());
192	}
193	else
194	system = _PATH_UNIX;
195
196	if (nlist(system, nl) < 0 \|\| !nl[0].n_value) {
197	fprintf(stderr, "trpt: %s: no namelist\n", system);
198	exit(1);
199	}
200	if ((memf = open(core, O_RDONLY)) < 0) {
201	perror(core);
202	exit(2);
203	}
204	if (kflag) {
205	#ifdef NEWVM
206	fputs("trpt: can't do core files yet\n", stderr);
207	exit(1);
208	#else
209	off_t off;
210
211	Sysmap = (struct pte *)
212	malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
213	if (!Sysmap) {
214	fputs("trpt: can't get memory for Sysmap.\n", stderr);
215	exit(1);
216	}
217	off = nl[N_SYSMAP].n_value & ~KERNBASE;
218	(void)lseek(memf, off, L_SET);
219	(void)read(memf, (char *)Sysmap,
220	(int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
221	#endif
222	}
223	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
224	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
225	sizeof(tcp_debx)) {
226	perror("trpt: tcp_debx");
227	exit(3);
228	}
229	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
230	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
231	sizeof(tcp_debug)) {
232	perror("trpt: tcp_debug");
233	exit(3);
234	}
235	/*
236	* If no control blocks have been specified, figure
237	* out how many distinct one we have and summarize
238	* them in tcp_pcbs for sorting the trace records
239	* below.
240	*/
241	if (!npcbs) {
242	for (i = 0; i < TCP_NDEBUG; i++) {
243	register struct tcp_debug *td = &tcp_debug[i];
244	register int j;
245
246	if (td->td_tcb == 0)
247	continue;
248	for (j = 0; j < npcbs; j++)
249	if (tcp_pcbs[j] == td->td_tcb)
250	break;
251	if (j >= npcbs)
252	tcp_pcbs[npcbs++] = td->td_tcb;
253	}
254	if (!npcbs)
255	exit(0);
256	}
257	qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
258	if (jflag) {
259	for (i = 0;;) {
260	printf("%x", (int)tcp_pcbs[i]);
261	if (++i == npcbs)
262	break;
263	fputs(", ", stdout);
264	}
265	putchar('\n');
266	}
267	else for (i = 0; i < npcbs; i++) {
268	printf("\n%x:\n", (int)tcp_pcbs[i]);
269	dotrace(tcp_pcbs[i]);
270	}
271	exit(0);
272	}
273
274	dotrace(tcpcb)
275	register caddr_t tcpcb;
276	{
277	register struct tcp_debug *td;
278	register int i;
279	int prev_debx = tcp_debx;
280
281	again: if (--tcp_debx < 0)
282	tcp_debx = TCP_NDEBUG - 1;
283	for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
284	td = &tcp_debug[i];
285	if (tcpcb && td->td_tcb != tcpcb)
286	continue;
287	ntime = ntohl(td->td_time);
288	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
7ba0088d	289	&td->td_ti.ti_t, td->td_req);
b7080c8e A	290	if (i == tcp_debx)
	291	goto done;
	292	}
	293	for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
	294	td = &tcp_debug[i];
	295	if (tcpcb && td->td_tcb != tcpcb)
	296	continue;
	297	ntime = ntohl(td->td_time);
	298	tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb,
7ba0088d	299	&td->td_ti.ti_t, td->td_req);
b7080c8e A	300	}
	301	done: if (follow) {
	302	prev_debx = tcp_debx + 1;
	303	if (prev_debx >= TCP_NDEBUG)
	304	prev_debx = 0;
	305	do {
	306	sleep(1);
	307	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
	308	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
	309	sizeof(tcp_debx)) {
	310	perror("trpt: tcp_debx");
	311	exit(3);
	312	}
	313	} while (tcp_debx == prev_debx);
	314	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
	315	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
	316	sizeof(tcp_debug)) {
	317	perror("trpt: tcp_debug");
	318	exit(3);
	319	}
	320	goto again;
	321	}
	322	}
	323
	324	/*
	325	* Tcp debug routines
	326	*/
	327	/ARGSUSED/
	328	tcp_trace(act, ostate, atp, tp, ti, req)
	329	short act, ostate;
	330	struct tcpcb atp, tp;
	331	struct tcpiphdr *ti;
	332	int req;
	333	{
	334	tcp_seq seq, ack;
	335	int flags, len, win, timer;
	336
	337	printf("%03ld %s:%s ",(ntime/10) % 1000, tcpstates[ostate],
	338	tanames[act]);
	339	switch (act) {
	340	case TA_INPUT:
	341	case TA_OUTPUT:
	342	case TA_DROP:
	343	if (aflag) {
	344	printf("(src=%s,%u, ",
	345	inet_ntoa(ti->ti_src), ntohs(ti->ti_sport));
	346	printf("dst=%s,%u)",
	347	inet_ntoa(ti->ti_dst), ntohs(ti->ti_dport));
	348	}
	349	seq = ti->ti_seq;
	350	ack = ti->ti_ack;
	351	len = ti->ti_len;
	352	win = ti->ti_win;
	353	if (act == TA_OUTPUT) {
	354	seq = ntohl(seq);
	355	ack = ntohl(ack);
	356	len = ntohs(len);
	357	win = ntohs(win);
	358	}
	359	if (act == TA_OUTPUT)
	360	len -= sizeof(struct tcphdr);
	361	if (len)
	362	printf("[%lx..%lx)", seq, seq + len);
	363	else
364	printf("%lx", seq);
365	printf("@%lx", ack);
366	if (win)
367	printf("(win=%x)", win);
368	flags = ti->ti_flags;
369	if (flags) {
370	register char *cp = "<";
371	#define pf(flag, string) { \
372	if (ti->ti_flags&flag) { \
373	(void)printf("%s%s", cp, string); \
374	cp = ","; \
375	} \
376	}
377	pf(TH_SYN, "SYN");
378	pf(TH_ACK, "ACK");
379	pf(TH_FIN, "FIN");
380	pf(TH_RST, "RST");
381	pf(TH_PUSH, "PUSH");
382	pf(TH_URG, "URG");
383	printf(">");
384	}
385	break;
386	case TA_USER:
387	timer = req >> 8;
388	req &= 0xff;
389	printf("%s", prurequests[req]);
390	if (req == PRU_SLOWTIMO \|\| req == PRU_FASTTIMO)
391	printf("<%s>", tcptimers[timer]);
392	break;
393	}
394	printf(" -> %s", tcpstates[tp->t_state]);
395	/* print out internal state of tp !?! */
396	printf("\n");
397	if (sflag) {
398	printf("\trcv_nxt %lx rcv_wnd %x snd_una %lx snd_nxt %lx snd_max %lx\n",
399	tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
400	tp->snd_max);
401	printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %x\n", tp->snd_wl1,
402	tp->snd_wl2, tp->snd_wnd);
403	}
404	/* print out timers? */
405	if (tflag) {
406	register char *cp = "\t";
407	register int i;
408
409	for (i = 0; i < TCPT_NTIMERS; i++) {
410	if (tp->t_timer[i] == 0)
411	continue;
412	printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
413	if (i == TCPT_REXMT)
414	printf(" (t_rxtshft=%d)", tp->t_rxtshift);
415	cp = ", ";
416	}
417	if (*cp != '\t')
418	putchar('\n');
419	}
420	}
421
422	numeric(c1, c2)
423	caddr_t c1, c2;
424	{
425	return(c1 - c2);
426	}
427
428	klseek(fd, base, off)
429	int fd, off;
430	off_t base;
431	{
432	off_t lseek();
433
434	#ifndef NEWVM
435	if (kflag) { /* get kernel pte */
436	base &= ~KERNBASE;
437	base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
438	}
439	#endif
440	(void)lseek(fd, base, off);
441	}