2 * Copyright (c) 1983, 1988, 1993
3 * The Regents of the University of California. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
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.
21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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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
33 * @(#) Copyright (c) 1983, 1988, 1993 The Regents of the University of California. All rights reserved.
34 * @(#)trpt.c 8.1 (Berkeley) 6/6/93
35 * $FreeBSD: src/usr.sbin/trpt/trpt.c,v 1.12 2000/01/29 11:49:07 shin Exp $
36 * $DragonFly: src/usr.sbin/trpt/trpt.c,v 1.4 2004/03/21 22:41:24 cpressey Exp $
39 #include <sys/param.h>
40 #include <sys/queue.h>
41 #include <sys/socket.h>
42 #include <sys/socketvar.h>
44 #include <sys/protosw.h>
48 #include <net/route.h>
51 #include <netinet/in.h>
52 #include <netinet/in_systm.h>
53 #include <netinet/ip.h>
55 #include <netinet/ip6.h>
57 #include <netinet/ip_var.h>
58 #include <netinet/tcp.h>
60 #include <netinet/tcp_fsm.h>
61 #include <netinet/tcp_seq.h>
63 #include <netinet/tcp_timer.h>
64 #include <netinet/tcp_var.h>
65 #include <netinet/tcpip.h>
67 #include <netinet/tcp_debug.h>
69 #include <arpa/inet.h>
80 { .n_name = "_tcp_debug" },
82 { .n_name = "_tcp_debx" },
86 static caddr_t tcp_pcbs[TCP_NDEBUG];
88 static int aflag, kflag, memf, follow, sflag, tflag;
90 void dotrace(caddr_t);
91 void klseek(int, off_t, int);
92 int numeric(const void *, const void *);
93 void tcp_trace(short, short, struct tcpcb *, struct tcpcb *,
94 int, void *, struct tcphdr *, int);
95 static void usage(void);
98 main(int argc, char **argv)
100 int ch, i, jflag, npcbs;
101 const char *syst, *core;
104 while ((ch = getopt(argc, argv, "afjp:st")) != -1)
117 if (npcbs >= TCP_NDEBUG)
118 errx(1, "too many pcb's specified");
119 sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
144 * Discard setgid privileges if not the running kernel so that
145 * bad guys can't print interesting stuff from kernel memory.
149 syst = getbootfile();
152 if (nlist(syst, nl) < 0 || !nl[0].n_value)
153 errx(1, "%s: no namelist", syst);
154 if ((memf = open(core, O_RDONLY)) < 0)
157 errx(1, "can't do core files yet");
158 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
159 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
162 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
163 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
167 * If no control blocks have been specified, figure
168 * out how many distinct one we have and summarize
169 * them in tcp_pcbs for sorting the trace records
173 for (i = 0; i < TCP_NDEBUG; i++) {
174 struct tcp_debug *td = &tcp_debug[i];
179 for (j = 0; j < npcbs; j++)
180 if (tcp_pcbs[j] == td->td_tcb)
183 tcp_pcbs[npcbs++] = td->td_tcb;
188 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
191 printf("%p", (void *)tcp_pcbs[i]);
198 for (i = 0; i < npcbs; i++) {
199 printf("\n%p:\n", (void *)tcp_pcbs[i]);
200 dotrace(tcp_pcbs[i]);
210 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
215 dotrace(caddr_t tcpcb)
217 struct tcp_debug *td;
219 int prev_debx, family;
221 prev_debx = tcp_debx;
222 again: if (--tcp_debx < 0)
223 tcp_debx = TCP_NDEBUG - 1;
224 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
226 if (tcpcb && td->td_tcb != tcpcb)
228 ntime = ntohl(td->td_time);
230 family = td->td_family;
236 tcp_trace(td->td_act, td->td_ostate,
237 (struct tcpcb *)td->td_tcb,
238 &td->td_cb, td->td_family, &td->td_ti.ti_i,
239 &td->td_ti.ti_t, td->td_req);
243 tcp_trace(td->td_act, td->td_ostate,
244 (struct tcpcb *)td->td_tcb,
245 &td->td_cb, td->td_family, &td->td_ti6.ip6,
246 &td->td_ti6.th, td->td_req);
253 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
255 if (tcpcb && td->td_tcb != tcpcb)
257 ntime = ntohl(td->td_time);
259 family = td->td_family;
265 tcp_trace(td->td_act, td->td_ostate,
266 (struct tcpcb *)td->td_tcb,
267 &td->td_cb, td->td_family, &td->td_ti.ti_i,
268 &td->td_ti.ti_t, td->td_req);
272 tcp_trace(td->td_act, td->td_ostate,
273 (struct tcpcb *)td->td_tcb,
274 &td->td_cb, td->td_family, &td->td_ti6.ip6,
275 &td->td_ti6.th, td->td_req);
281 prev_debx = tcp_debx + 1;
282 if (prev_debx >= TCP_NDEBUG)
286 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
287 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
290 } while (tcp_debx == prev_debx);
291 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
292 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
304 tcp_trace(short act, short ostate, struct tcpcb *atp __unused,
305 struct tcpcb *tp, int family, void *ip, struct tcphdr *th, int req)
308 int flags, len, win, timer;
309 struct ip *ip4 = NULL;
311 int isipv6 = 0, nopkt = 1;
312 struct ip6_hdr *ip6 = NULL;
313 char ntop_buf[INET6_ADDRSTRLEN];
321 ip4 = (struct ip *)ip;
326 ip6 = (struct ip6_hdr *)ip;
332 ip4 = (struct ip *)ip;
334 printf("%03ld %s:%s ",(long)(ntime/10) % 1000, tcpstates[ostate],
345 printf("(src=%s,%u, ",
349 ? inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf,
352 inet_ntoa(ip4->ip_src),
353 ntohs(th->th_sport));
357 ? inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf,
360 inet_ntoa(ip4->ip_dst),
361 ntohs(th->th_dport));
368 isipv6 ? ip6->ip6_plen :
372 if (act == TA_OUTPUT) {
378 if (act == TA_OUTPUT)
379 len -= sizeof(struct tcphdr);
381 printf("[%lx..%lx)", (u_long)seq, (u_long)(seq + len));
383 printf("%lx", (u_long)seq);
384 printf("@%lx", (u_long)ack);
386 printf("(win=%x)", win);
387 flags = th->th_flags;
389 const char *cp = "<";
391 #define pf(flag, string) { \
392 if (th->th_flags & flag) { \
393 printf("%s%s", cp, string); \
409 printf("%s", prurequests[req]);
410 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
411 printf("<%s>", tcptimers[timer]);
414 printf(" -> %s", tcpstates[tp->t_state]);
415 /* print out internal state of tp !?! */
418 printf("\trcv_nxt %lx rcv_wnd %lx snd_una %lx snd_nxt %lx snd_max %lx\n",
419 (u_long)tp->rcv_nxt, tp->rcv_wnd,
420 (u_long)tp->snd_una, (u_long)tp->snd_nxt,
421 (u_long)tp->snd_max);
422 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %lx\n",
424 (u_long)tp->snd_wl2, (u_long)tp->snd_wnd);
426 /* print out timers? */
430 * kernel now uses callouts, not integer time values.
436 for (i = 0; i < TCPT_NTIMERS; i++) {
437 if (tp->t_timer[i] == 0)
439 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
441 printf(" (t_rxtshft=%d)", tp->t_rxtshift);
451 numeric(const void *v1, const void *v2)
453 const caddr_t *c1 = v1, *c2 = v2;
459 klseek(int fd, off_t base, int off)
461 lseek(fd, base, off);