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
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
35 static const char copyright[] =
36 "@(#) Copyright (c) 1983, 1988, 1993\n\
37 The Regents of the University of California. All rights reserved.\n";
42 static char sccsid[] = "@(#)trpt.c 8.1 (Berkeley) 6/6/93";
44 static const char rcsid[] =
48 #include <sys/param.h>
49 #include <sys/queue.h>
50 #include <sys/socket.h>
51 #include <sys/socketvar.h>
53 #include <sys/protosw.h>
57 #include <net/route.h>
60 #include <netinet/in.h>
61 #include <netinet/in_systm.h>
62 #include <netinet/ip.h>
64 #include <netinet/ip6.h>
66 #include <netinet/ip_var.h>
67 #include <netinet/tcp.h>
69 #include <netinet/tcp_fsm.h>
70 #include <netinet/tcp_seq.h>
72 #include <netinet/tcp_timer.h>
73 #include <netinet/tcp_var.h>
74 #include <netinet/tcpip.h>
76 #include <netinet/tcp_debug.h>
78 #include <arpa/inet.h>
92 static caddr_t tcp_pcbs[TCP_NDEBUG];
94 static int aflag, kflag, memf, follow, sflag, tflag;
96 void dotrace(caddr_t);
97 void klseek(int, off_t, int);
98 int numeric(const void *, const void *);
99 void tcp_trace(short, short, struct tcpcb *, int, void *, struct tcphdr *, int);
100 static void usage(void);
103 main(int argc, char **argv)
105 int ch, i, jflag, npcbs;
106 const char *core, *syst;
108 nl[0].n_name = strdup("_tcp_debug");
109 nl[1].n_name = strdup("_tcp_debx");
112 while ((ch = getopt(argc, argv, "afjp:st")) != -1)
125 if (npcbs >= TCP_NDEBUG)
126 errx(1, "too many pcb's specified");
127 (void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
152 * Discard setgid privileges if not the running kernel so that
153 * bad guys can't print interesting stuff from kernel memory.
158 syst = getbootfile();
160 if (nlist(syst, nl) < 0 || !nl[0].n_value)
161 errx(1, "%s: no namelist", syst);
162 if ((memf = open(core, O_RDONLY)) < 0)
166 errx(1, "can't do core files yet");
167 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
168 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
171 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
172 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
176 * If no control blocks have been specified, figure
177 * out how many distinct one we have and summarize
178 * them in tcp_pcbs for sorting the trace records
182 for (i = 0; i < TCP_NDEBUG; i++) {
183 register struct tcp_debug *td = &tcp_debug[i];
188 for (j = 0; j < npcbs; j++)
189 if (tcp_pcbs[j] == td->td_tcb)
192 tcp_pcbs[npcbs++] = td->td_tcb;
197 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
200 printf("%p", (void *)tcp_pcbs[i]);
207 else for (i = 0; i < npcbs; i++) {
208 printf("\n%p:\n", tcp_pcbs[i]);
209 dotrace(tcp_pcbs[i]);
217 (void)fprintf(stderr,
218 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
224 register caddr_t tcpcb;
226 register struct tcp_debug *td;
228 int prev_debx = tcp_debx, family;
230 again: if (--tcp_debx < 0)
231 tcp_debx = TCP_NDEBUG - 1;
232 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
234 if (tcpcb && td->td_tcb != tcpcb)
236 ntime = ntohl(td->td_time);
238 family = td->td_family;
244 tcp_trace(td->td_act, td->td_ostate,
245 &td->td_cb, td->td_family, &td->td_ti.ti_i,
246 &td->td_ti.ti_t, td->td_req);
250 tcp_trace(td->td_act, td->td_ostate,
251 &td->td_cb, td->td_family, &td->td_ti6.ip6,
252 &td->td_ti6.th, td->td_req);
259 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
261 if (tcpcb && td->td_tcb != tcpcb)
263 ntime = ntohl(td->td_time);
265 family = td->td_family;
271 tcp_trace(td->td_act, td->td_ostate,
272 &td->td_cb, td->td_family, &td->td_ti.ti_i,
273 &td->td_ti.ti_t, td->td_req);
277 tcp_trace(td->td_act, td->td_ostate,
278 &td->td_cb, td->td_family, &td->td_ti6.ip6,
279 &td->td_ti6.th, td->td_req);
285 prev_debx = tcp_debx + 1;
286 if (prev_debx >= TCP_NDEBUG)
290 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
291 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
294 } while (tcp_debx == prev_debx);
295 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
296 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
308 tcp_trace(act, ostate, tp, family, ip, th, req)
317 int flags, len, win, timer;
320 int isipv6, nopkt = 1;
322 char ntop_buf[INET6_ADDRSTRLEN];
330 ip4 = (struct ip *)ip;
335 ip6 = (struct ip6_hdr *)ip;
341 ip4 = (struct ip *)ip;
343 printf("%03ld %s:%s ", (long)((ntime/10) % 1000), tcpstates[ostate],
354 printf("(src=%s,%u, ",
358 ? inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf,
361 inet_ntoa(ip4->ip_src),
362 ntohs(th->th_sport));
366 ? inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf,
369 inet_ntoa(ip4->ip_dst),
370 ntohs(th->th_dport));
377 isipv6 ? ip6->ip6_plen :
381 if (act == TA_OUTPUT) {
387 if (act == TA_OUTPUT)
388 len -= sizeof(struct tcphdr);
390 printf("[%lx..%lx)", (u_long)seq, (u_long)(seq + len));
392 printf("%lx", (u_long)seq);
393 printf("@%lx", (u_long)ack);
395 printf("(win=%x)", win);
396 flags = th->th_flags;
398 const char *cp = "<";
399 #define pf(flag, string) { \
400 if (th->th_flags&flag) { \
401 (void)printf("%s%s", cp, string); \
417 printf("%s", prurequests[req]);
418 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
419 printf("<%s>", tcptimers[timer]);
422 printf(" -> %s", tcpstates[tp->t_state]);
423 /* print out internal state of tp !?! */
426 printf("\trcv_nxt %lx rcv_wnd %lx snd_una %lx snd_nxt %lx snd_max %lx\n",
427 (u_long)tp->rcv_nxt, tp->rcv_wnd,
428 (u_long)tp->snd_una, (u_long)tp->snd_nxt,
429 (u_long)tp->snd_max);
430 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %lx\n",
432 (u_long)tp->snd_wl2, tp->snd_wnd);
434 /* print out timers? */
438 * kernel now uses callouts, not integer time values.
441 register char *cp = "\t";
444 for (i = 0; i < TCPT_NTIMERS; i++) {
445 if (tp->t_timer[i] == 0)
447 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
449 printf(" (t_rxtshft=%d)", tp->t_rxtshift);
462 const caddr_t *c1 = v1, *c2 = v2;
467 klseek(fd, base, off)
471 (void)lseek(fd, base, off);