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

/*
 * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
 *
 * @APPLE_LICENSE_HEADER_START@
 * 
 * "Portions Copyright (c) 1999 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 1.0 (the 'License').  You may not use this file
 * except in compliance with the License.  Please obtain a copy of the
 * License at http://www.apple.com/publicsource 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 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.
 */

#include <sys/cdefs.h>
#ifndef lint
__unused 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
__unused 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 <stdlib.h>
#include <unistd.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;

void klseek(int, off_t, int);
void dotrace(caddr_t);
void tcp_trace(short, short, struct tcpcb *, struct tcpcb *, struct tcpiphdr *, int);

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

void
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, (struct tcpcb *)td->td_tcb, &td->td_cb,
		    (struct tcpiphdr *)&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, (struct tcpcb *)td->td_tcb, &td->td_cb,
		    (struct tcpiphdr *)&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*/
void
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("%03u %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("[%x..%x)", seq, seq + len);
		else
			printf("%x", seq);
		printf("@%x", 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 %x rcv_wnd %x snd_una %x snd_nxt %x snd_max %x\n",
		    tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
		    tp->snd_max);
		printf("\tsnd_wl1 %x snd_wl2 %x 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');
	}
}

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

void
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	*
a2c93a76 A	6	* "Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
	7	* Reserved. This file contains Original Code and/or Modifications of
	8	* Original Code as defined in and that are subject to the Apple Public
	9	* Source License Version 1.0 (the 'License'). You may not use this file
	10	* except in compliance with the License. Please obtain a copy of the
	11	* License at http://www.apple.com/publicsource and read it before using
	12	* this file.
b7080c8e A	13	*
	14	* The Original Code and all software distributed under the License are
	15	* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
	16	* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
	17	* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
a2c93a76 A	18	* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
	19	* License for the specific language governing rights and limitations
	20	* under the License."
b7080c8e A	21	*
	22	* @APPLE_LICENSE_HEADER_END@
	23	*/
	24	/*
	25	* Copyright (c) 1983, 1988, 1993
	26	* The Regents of the University of California. All rights reserved.
	27	*
	28	* Redistribution and use in source and binary forms, with or without
	29	* modification, are permitted provided that the following conditions
	30	* are met:
	31	* 1. Redistributions of source code must retain the above copyright
	32	* notice, this list of conditions and the following disclaimer.
	33	* 2. Redistributions in binary form must reproduce the above copyright
	34	* notice, this list of conditions and the following disclaimer in the
	35	* documentation and/or other materials provided with the distribution.
	36	* 3. All advertising materials mentioning features or use of this software
	37	* must display the following acknowledgement:
	38	* This product includes software developed by the University of
	39	* California, Berkeley and its contributors.
	40	* 4. Neither the name of the University nor the names of its contributors
	41	* may be used to endorse or promote products derived from this software
	42	* without specific prior written permission.
	43	*
	44	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	45	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	46	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	47	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	48	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	49	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	50	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	51	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	52	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	53	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	54	* SUCH DAMAGE.
	55	*/
	56
b8dff150	57	#include <sys/cdefs.h>
b7080c8e	58	#ifndef lint
b8dff150	59	__unused static char copyright[] =
b7080c8e A	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
b8dff150	65	__unused static char sccsid[] = "@(#)trpt.c 8.1 (Berkeley) 6/6/93";
b7080c8e A	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>
b8dff150 A	104	#include <stdlib.h>
b8dff150 A	105	#include <unistd.h>
b7080c8e A	106	#include <errno.h>
	107	#include <nlist.h>
	108	#include <paths.h>
	109
	110	struct tcp_debug tcp_debug[TCP_NDEBUG];
	111	int tcp_debx;
	112
	113	struct nlist nl[] = {
	114	#define N_TCP_DEBUG 0
	115	{ "_tcp_debug" },
	116	#define N_TCP_DEBX 1
	117	{ "_tcp_debx" },
	118	#ifndef NEWVM
	119	#define N_SYSMAP 2
	120	{ "_Sysmap" },
	121	#define N_SYSSIZE 3
	122	{ "_Syssize" },
	123	#endif
	124	{ "" },
	125	};
	126
	127	#ifndef NEWVM
	128	static struct pte *Sysmap;
	129	#endif
	130	static caddr_t tcp_pcbs[TCP_NDEBUG];
	131	static n_time ntime;
	132	static int aflag, kflag, memf, follow, sflag, tflag;
	133
b8dff150 A	134	void klseek(int, off_t, int);
	135	void dotrace(caddr_t);
	136	void tcp_trace(short, short, struct tcpcb , struct tcpcb , struct tcpiphdr *, int);
	137
	138	int
b7080c8e A	139	main(argc, argv)
	140	int argc;
	141	char **argv;
	142	{
	143	extern char *optarg;
	144	extern int optind;
	145	int ch, i, jflag, npcbs, numeric();
b8dff150	146	char system, core;
b7080c8e A	147	off_t lseek();
	148
	149	jflag = npcbs = 0;
	150	while ((ch = getopt(argc, argv, "afjp:st")) != EOF)
	151	switch (ch) {
	152	case 'a':
	153	++aflag;
	154	break;
	155	case 'f':
	156	++follow;
	157	setlinebuf(stdout);
	158	break;
	159	case 'j':
	160	++jflag;
	161	break;
	162	case 'p':
	163	if (npcbs >= TCP_NDEBUG) {
	164	fputs("trpt: too many pcb's specified\n",
	165	stderr);
	166	exit(1);
	167	}
	168	(void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
	169	break;
	170	case 's':
	171	++sflag;
	172	break;
	173	case 't':
	174	++tflag;
	175	break;
	176	case '?':
	177	default:
	178	(void)fprintf(stderr,
	179	"usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
	180	exit(1);
	181	}
	182	argc -= optind;
	183	argv += optind;
	184
	185	core = _PATH_KMEM;
	186	if (argc > 0) {
	187	system = *argv;
	188	argc--, argv++;
	189	if (argc > 0) {
	190	core = *argv;
	191	argc--, argv++;
	192	++kflag;
	193	}
	194	/*
	195	* Discard setgid privileges if not the running kernel so that
	196	* bad guys can't print interesting stuff from kernel memory.
	197	*/
	198	setgid(getgid());
	199	}
	200	else
	201	system = _PATH_UNIX;
	202
	203	if (nlist(system, nl) < 0 \|\| !nl[0].n_value) {
	204	fprintf(stderr, "trpt: %s: no namelist\n", system);
	205	exit(1);
	206	}
	207	if ((memf = open(core, O_RDONLY)) < 0) {
	208	perror(core);
	209	exit(2);
	210	}
211	if (kflag) {
212	#ifdef NEWVM
213	fputs("trpt: can't do core files yet\n", stderr);
214	exit(1);
215	#else
216	off_t off;
217
218	Sysmap = (struct pte *)
219	malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
220	if (!Sysmap) {
221	fputs("trpt: can't get memory for Sysmap.\n", stderr);
222	exit(1);
223	}
224	off = nl[N_SYSMAP].n_value & ~KERNBASE;
225	(void)lseek(memf, off, L_SET);
226	(void)read(memf, (char *)Sysmap,
227	(int)(nl[N_SYSSIZE].n_value * sizeof(struct pte)));
228	#endif
229	}
230	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
231	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
232	sizeof(tcp_debx)) {
233	perror("trpt: tcp_debx");
234	exit(3);
235	}
236	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
237	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
238	sizeof(tcp_debug)) {
239	perror("trpt: tcp_debug");
240	exit(3);
241	}
242	/*
243	* If no control blocks have been specified, figure
244	* out how many distinct one we have and summarize
245	* them in tcp_pcbs for sorting the trace records
246	* below.
247	*/
248	if (!npcbs) {
249	for (i = 0; i < TCP_NDEBUG; i++) {
250	register struct tcp_debug *td = &tcp_debug[i];
251	register int j;
252
253	if (td->td_tcb == 0)
254	continue;
255	for (j = 0; j < npcbs; j++)
256	if (tcp_pcbs[j] == td->td_tcb)
257	break;
258	if (j >= npcbs)
259	tcp_pcbs[npcbs++] = td->td_tcb;
260	}
261	if (!npcbs)
262	exit(0);
263	}
264	qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
265	if (jflag) {
266	for (i = 0;;) {
267	printf("%x", (int)tcp_pcbs[i]);
268	if (++i == npcbs)
269	break;
270	fputs(", ", stdout);
271	}
272	putchar('\n');
273	}
274	else for (i = 0; i < npcbs; i++) {
275	printf("\n%x:\n", (int)tcp_pcbs[i]);
276	dotrace(tcp_pcbs[i]);
277	}
278	exit(0);
279	}
280
b8dff150	281	void
b7080c8e A	282	dotrace(tcpcb)
	283	register caddr_t tcpcb;
	284	{
	285	register struct tcp_debug *td;
	286	register int i;
	287	int prev_debx = tcp_debx;
	288
	289	again: if (--tcp_debx < 0)
	290	tcp_debx = TCP_NDEBUG - 1;
	291	for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
	292	td = &tcp_debug[i];
	293	if (tcpcb && td->td_tcb != tcpcb)
	294	continue;
	295	ntime = ntohl(td->td_time);
b8dff150 A	296	tcp_trace(td->td_act, td->td_ostate, (struct tcpcb *)td->td_tcb, &td->td_cb,
b8dff150 A	297	(struct tcpiphdr *)&td->td_ti.ti_t, td->td_req);
b7080c8e A	298	if (i == tcp_debx)
	299	goto done;
	300	}
	301	for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
	302	td = &tcp_debug[i];
	303	if (tcpcb && td->td_tcb != tcpcb)
	304	continue;
	305	ntime = ntohl(td->td_time);
b8dff150 A	306	tcp_trace(td->td_act, td->td_ostate, (struct tcpcb *)td->td_tcb, &td->td_cb,
b8dff150 A	307	(struct tcpiphdr *)&td->td_ti.ti_t, td->td_req);
b7080c8e A	308	}
	309	done: if (follow) {
	310	prev_debx = tcp_debx + 1;
	311	if (prev_debx >= TCP_NDEBUG)
	312	prev_debx = 0;
	313	do {
	314	sleep(1);
	315	(void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
	316	if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
	317	sizeof(tcp_debx)) {
	318	perror("trpt: tcp_debx");
	319	exit(3);
	320	}
	321	} while (tcp_debx == prev_debx);
	322	(void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
	323	if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
	324	sizeof(tcp_debug)) {
	325	perror("trpt: tcp_debug");
	326	exit(3);
	327	}
	328	goto again;
	329	}
	330	}
	331
	332	/*
	333	* Tcp debug routines
	334	*/
	335	/ARGSUSED/
b8dff150	336	void
b7080c8e A	337	tcp_trace(act, ostate, atp, tp, ti, req)
	338	short act, ostate;
	339	struct tcpcb atp, tp;
	340	struct tcpiphdr *ti;
	341	int req;
	342	{
	343	tcp_seq seq, ack;
	344	int flags, len, win, timer;
	345
b8dff150	346	printf("%03u %s:%s ",(ntime/10) % 1000, tcpstates[ostate],
b7080c8e A	347	tanames[act]);
	348	switch (act) {
	349	case TA_INPUT:
	350	case TA_OUTPUT:
	351	case TA_DROP:
	352	if (aflag) {
	353	printf("(src=%s,%u, ",
	354	inet_ntoa(ti->ti_src), ntohs(ti->ti_sport));
	355	printf("dst=%s,%u)",
	356	inet_ntoa(ti->ti_dst), ntohs(ti->ti_dport));
	357	}
	358	seq = ti->ti_seq;
	359	ack = ti->ti_ack;
	360	len = ti->ti_len;
	361	win = ti->ti_win;
	362	if (act == TA_OUTPUT) {
	363	seq = ntohl(seq);
	364	ack = ntohl(ack);
	365	len = ntohs(len);
	366	win = ntohs(win);
	367	}
	368	if (act == TA_OUTPUT)
	369	len -= sizeof(struct tcphdr);
	370	if (len)
b8dff150	371	printf("[%x..%x)", seq, seq + len);
b7080c8e	372	else
b8dff150 A	373	printf("%x", seq);
b8dff150 A	374	printf("@%x", ack);
b7080c8e A	375	if (win)
	376	printf("(win=%x)", win);
	377	flags = ti->ti_flags;
	378	if (flags) {
	379	register char *cp = "<";
	380	#define pf(flag, string) { \
	381	if (ti->ti_flags&flag) { \
	382	(void)printf("%s%s", cp, string); \
	383	cp = ","; \
	384	} \
	385	}
	386	pf(TH_SYN, "SYN");
	387	pf(TH_ACK, "ACK");
	388	pf(TH_FIN, "FIN");
	389	pf(TH_RST, "RST");
	390	pf(TH_PUSH, "PUSH");
	391	pf(TH_URG, "URG");
	392	printf(">");
	393	}
	394	break;
	395	case TA_USER:
	396	timer = req >> 8;
	397	req &= 0xff;
	398	printf("%s", prurequests[req]);
	399	if (req == PRU_SLOWTIMO \|\| req == PRU_FASTTIMO)
	400	printf("<%s>", tcptimers[timer]);
	401	break;
	402	}
	403	printf(" -> %s", tcpstates[tp->t_state]);
	404	/* print out internal state of tp !?! */
	405	printf("\n");
	406	if (sflag) {
b8dff150	407	printf("\trcv_nxt %x rcv_wnd %x snd_una %x snd_nxt %x snd_max %x\n",
b7080c8e A	408	tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt,
b7080c8e A	409	tp->snd_max);
b8dff150	410	printf("\tsnd_wl1 %x snd_wl2 %x snd_wnd %x\n", tp->snd_wl1,
b7080c8e A	411	tp->snd_wl2, tp->snd_wnd);
	412	}
	413	/* print out timers? */
	414	if (tflag) {
	415	register char *cp = "\t";
	416	register int i;
	417
	418	for (i = 0; i < TCPT_NTIMERS; i++) {
	419	if (tp->t_timer[i] == 0)
	420	continue;
	421	printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
	422	if (i == TCPT_REXMT)
	423	printf(" (t_rxtshft=%d)", tp->t_rxtshift);
	424	cp = ", ";
	425	}
	426	if (*cp != '\t')
	427	putchar('\n');
	428	}
	429	}
	430
b8dff150	431	int
b7080c8e A	432	numeric(c1, c2)
	433	caddr_t c1, c2;
	434	{
	435	return(c1 - c2);
	436	}
	437
b8dff150	438	void
b7080c8e A	439	klseek(fd, base, off)
	440	int fd, off;
	441	off_t base;
	442	{
	443	off_t lseek();
	444
	445	#ifndef NEWVM
	446	if (kflag) { /* get kernel pte */
	447	base &= ~KERNBASE;
	448	base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET);
	449	}
	450	#endif
	451	(void)lseek(fd, base, off);
	452	}