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 * 4. Neither the name of the University nor the names of its contributors
14 * may be used to endorse or promote products derived from this software
15 * without specific prior written permission.
17 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 static const char copyright[] =
33 "@(#) Copyright (c) 1983, 1988, 1993\n\
34 The Regents of the University of California. All rights reserved.\n";
38 static char sccsid[] = "@(#)trpt.c 8.1 (Berkeley) 6/6/93";
41 #include <sys/cdefs.h>
42 __FBSDID("$FreeBSD$");
44 #include <sys/param.h>
45 #include <sys/queue.h>
46 #include <sys/socket.h>
47 #include <sys/socketvar.h>
49 #include <sys/protosw.h>
53 #include <net/route.h>
56 #include <netinet/in.h>
57 #include <netinet/in_systm.h>
58 #include <netinet/ip.h>
60 #include <netinet/ip6.h>
62 #include <netinet/ip_var.h>
63 #include <netinet/tcp.h>
65 #include <netinet/tcp_fsm.h>
66 #include <netinet/tcp_seq.h>
68 #include <netinet/tcp_timer.h>
69 #include <netinet/tcp_var.h>
70 #include <netinet/tcpip.h>
72 #include <netinet/tcp_debug.h>
74 #include <arpa/inet.h>
88 static caddr_t tcp_pcbs[TCP_NDEBUG];
90 static int aflag, kflag, memf, follow, sflag, tflag;
92 void dotrace(caddr_t);
93 void klseek(int, off_t, int);
94 int numeric(const void *, const void *);
95 void tcp_trace(short, short, struct tcpcb *, int, void *, struct tcphdr *, int);
96 static void usage(void);
99 main(int argc, char **argv)
101 int ch, i, jflag, npcbs;
102 const char *core, *syst;
104 nl[0].n_name = strdup("_tcp_debug");
105 nl[1].n_name = strdup("_tcp_debx");
108 while ((ch = getopt(argc, argv, "afjp:st")) != -1)
121 if (npcbs >= TCP_NDEBUG)
122 errx(1, "too many pcb's specified");
123 (void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
148 * Discard setgid privileges if not the running kernel so that
149 * bad guys can't print interesting stuff from kernel memory.
151 if (setgid(getgid()) != 0)
155 syst = getbootfile();
157 if (nlist(syst, nl) < 0 || !nl[0].n_value)
158 errx(1, "%s: no namelist", syst);
159 if ((memf = open(core, O_RDONLY)) < 0)
161 if (setgid(getgid()) != 0)
164 errx(1, "can't do core files yet");
165 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
166 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
169 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
170 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
174 * If no control blocks have been specified, figure
175 * out how many distinct one we have and summarize
176 * them in tcp_pcbs for sorting the trace records
180 for (i = 0; i < TCP_NDEBUG; i++) {
181 register struct tcp_debug *td = &tcp_debug[i];
186 for (j = 0; j < npcbs; j++)
187 if (tcp_pcbs[j] == td->td_tcb)
190 tcp_pcbs[npcbs++] = td->td_tcb;
195 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
198 printf("%p", (void *)tcp_pcbs[i]);
205 else for (i = 0; i < npcbs; i++) {
206 printf("\n%p:\n", tcp_pcbs[i]);
207 dotrace(tcp_pcbs[i]);
215 (void)fprintf(stderr,
216 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
222 register caddr_t tcpcb;
224 register struct tcp_debug *td;
226 int prev_debx = tcp_debx, family;
228 again: if (--tcp_debx < 0)
229 tcp_debx = TCP_NDEBUG - 1;
230 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
232 if (tcpcb && td->td_tcb != tcpcb)
234 ntime = ntohl(td->td_time);
236 family = td->td_family;
242 tcp_trace(td->td_act, td->td_ostate,
243 &td->td_cb, td->td_family, &td->td_ti.ti_i,
244 &td->td_ti.ti_t, td->td_req);
248 tcp_trace(td->td_act, td->td_ostate,
249 &td->td_cb, td->td_family, &td->td_ti6.ip6,
250 &td->td_ti6.th, td->td_req);
257 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
259 if (tcpcb && td->td_tcb != tcpcb)
261 ntime = ntohl(td->td_time);
263 family = td->td_family;
269 tcp_trace(td->td_act, td->td_ostate,
270 &td->td_cb, td->td_family, &td->td_ti.ti_i,
271 &td->td_ti.ti_t, td->td_req);
275 tcp_trace(td->td_act, td->td_ostate,
276 &td->td_cb, td->td_family, &td->td_ti6.ip6,
277 &td->td_ti6.th, td->td_req);
283 prev_debx = tcp_debx + 1;
284 if (prev_debx >= TCP_NDEBUG)
288 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
289 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
292 } while (tcp_debx == prev_debx);
293 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
294 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
306 tcp_trace(short act, short ostate, struct tcpcb *tp, int family __unused,
307 void *ip, struct tcphdr *th, int req)
310 int flags, len, win, timer;
313 int isipv6, nopkt = 1;
315 char ntop_buf[INET6_ADDRSTRLEN];
323 ip4 = (struct ip *)ip;
328 ip6 = (struct ip6_hdr *)ip;
334 ip4 = (struct ip *)ip;
336 printf("%03ld %s:%s ", (long)((ntime/10) % 1000), tcpstates[ostate],
347 printf("(src=%s,%u, ",
351 ? inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf,
354 inet_ntoa(ip4->ip_src),
355 ntohs(th->th_sport));
359 ? inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf,
362 inet_ntoa(ip4->ip_dst),
363 ntohs(th->th_dport));
370 isipv6 ? ip6->ip6_plen :
374 if (act == TA_OUTPUT) {
380 if (act == TA_OUTPUT)
381 len -= sizeof(struct tcphdr);
383 printf("[%lx..%lx)", (u_long)seq, (u_long)(seq + len));
385 printf("%lx", (u_long)seq);
386 printf("@%lx", (u_long)ack);
388 printf("(win=%x)", win);
389 flags = th->th_flags;
391 const char *cp = "<";
392 #define pf(flag, string) { \
393 if (th->th_flags&flag) { \
394 (void)printf("%s%s", cp, string); \
410 printf("%s", prurequests[req]);
411 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
412 printf("<%s>", tcptimers[timer]);
415 printf(" -> %s", tcpstates[tp->t_state]);
416 /* print out internal state of tp !?! */
419 printf("\trcv_nxt %lx rcv_wnd %lx snd_una %lx snd_nxt %lx snd_max %lx\n",
420 (u_long)tp->rcv_nxt, tp->rcv_wnd,
421 (u_long)tp->snd_una, (u_long)tp->snd_nxt,
422 (u_long)tp->snd_max);
423 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %lx\n",
425 (u_long)tp->snd_wl2, tp->snd_wnd);
427 /* print out timers? */
431 * kernel now uses callouts, not integer time values.
434 register char *cp = "\t";
437 for (i = 0; i < TCPT_NTIMERS; i++) {
438 if (tp->t_timer[i] == 0)
440 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
442 printf(" (t_rxtshft=%d)", tp->t_rxtshift);
455 const caddr_t *c1 = v1, *c2 = v2;
460 klseek(fd, base, off)
464 (void)lseek(fd, base, off);