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. 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
29 * @(#) Copyright (c) 1983, 1988, 1993 The Regents of the University of California. All rights reserved.
30 * @(#)trpt.c 8.1 (Berkeley) 6/6/93
31 * $FreeBSD: src/usr.sbin/trpt/trpt.c,v 1.12 2000/01/29 11:49:07 shin Exp $
34 #include <sys/param.h>
35 #include <sys/queue.h>
36 #include <sys/socket.h>
37 #include <sys/socketvar.h>
39 #include <sys/protosw.h>
42 #include <net/route.h>
45 #include <netinet/in.h>
46 #include <netinet/in_systm.h>
47 #include <netinet/ip.h>
49 #include <netinet/ip6.h>
51 #include <netinet/ip_var.h>
52 #include <netinet/tcp.h>
54 #include <netinet/tcp_fsm.h>
55 #include <netinet/tcp_seq.h>
57 #include <netinet/tcp_timer.h>
58 #include <netinet/tcp_var.h>
59 #include <netinet/tcpip.h>
61 #include <netinet/tcp_debug.h>
63 #include <arpa/inet.h>
75 { .n_name = "_tcp_debug" },
77 { .n_name = "_tcp_debx" },
81 static caddr_t tcp_pcbs[TCP_NDEBUG];
83 static int aflag, kflag, memf, follow, sflag, tflag;
85 void dotrace(caddr_t);
86 void klseek(int, off_t, int);
87 int numeric(const void *, const void *);
88 void tcp_trace(short, short, struct tcpcb *, struct tcpcb *,
89 int, void *, struct tcphdr *, int);
90 static void usage(void);
93 main(int argc, char **argv)
95 int ch, i, jflag, npcbs;
96 const char *syst, *core;
99 while ((ch = getopt(argc, argv, "afjp:st")) != -1)
112 if (npcbs >= TCP_NDEBUG)
113 errx(1, "too many pcb's specified");
114 sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
139 * Discard setgid privileges if not the running kernel so that
140 * bad guys can't print interesting stuff from kernel memory.
144 syst = getbootfile();
147 if (nlist(syst, nl) < 0 || !nl[0].n_value)
148 errx(1, "%s: no namelist", syst);
149 if ((memf = open(core, O_RDONLY)) < 0)
152 errx(1, "can't do core files yet");
153 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
154 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
157 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
158 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
162 * If no control blocks have been specified, figure
163 * out how many distinct one we have and summarize
164 * them in tcp_pcbs for sorting the trace records
168 for (i = 0; i < TCP_NDEBUG; i++) {
169 struct tcp_debug *td = &tcp_debug[i];
174 for (j = 0; j < npcbs; j++)
175 if (tcp_pcbs[j] == td->td_tcb)
178 tcp_pcbs[npcbs++] = td->td_tcb;
183 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
186 printf("%p", (void *)tcp_pcbs[i]);
193 for (i = 0; i < npcbs; i++) {
194 printf("\n%p:\n", (void *)tcp_pcbs[i]);
195 dotrace(tcp_pcbs[i]);
205 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
210 dotrace(caddr_t tcpcb)
212 struct tcp_debug *td;
214 int prev_debx, family;
216 prev_debx = tcp_debx;
217 again: if (--tcp_debx < 0)
218 tcp_debx = TCP_NDEBUG - 1;
219 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
221 if (tcpcb && td->td_tcb != tcpcb)
223 ntime = ntohl(td->td_time);
225 family = td->td_family;
231 tcp_trace(td->td_act, td->td_ostate,
232 (struct tcpcb *)td->td_tcb,
233 &td->td_cb, td->td_family, &td->td_ti.ti_i,
234 &td->td_ti.ti_t, td->td_req);
238 tcp_trace(td->td_act, td->td_ostate,
239 (struct tcpcb *)td->td_tcb,
240 &td->td_cb, td->td_family, &td->td_ti6.ip6,
241 &td->td_ti6.th, td->td_req);
248 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
250 if (tcpcb && td->td_tcb != tcpcb)
252 ntime = ntohl(td->td_time);
254 family = td->td_family;
260 tcp_trace(td->td_act, td->td_ostate,
261 (struct tcpcb *)td->td_tcb,
262 &td->td_cb, td->td_family, &td->td_ti.ti_i,
263 &td->td_ti.ti_t, td->td_req);
267 tcp_trace(td->td_act, td->td_ostate,
268 (struct tcpcb *)td->td_tcb,
269 &td->td_cb, td->td_family, &td->td_ti6.ip6,
270 &td->td_ti6.th, td->td_req);
276 prev_debx = tcp_debx + 1;
277 if (prev_debx >= TCP_NDEBUG)
281 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
282 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
285 } while (tcp_debx == prev_debx);
286 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
287 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
299 tcp_trace(short act, short ostate, struct tcpcb *atp __unused,
300 struct tcpcb *tp, int family, void *ip, struct tcphdr *th, int req)
303 int flags, len, win, timer;
304 struct ip *ip4 = NULL;
306 int isipv6 = 0, nopkt = 1;
307 struct ip6_hdr *ip6 = NULL;
308 char ntop_buf[INET6_ADDRSTRLEN];
316 ip4 = (struct ip *)ip;
321 ip6 = (struct ip6_hdr *)ip;
327 ip4 = (struct ip *)ip;
329 printf("%03ld %s:%s ",(long)(ntime/10) % 1000, tcpstates[ostate],
340 printf("(src=%s,%u, ",
344 ? inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf,
347 inet_ntoa(ip4->ip_src),
348 ntohs(th->th_sport));
352 ? inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf,
355 inet_ntoa(ip4->ip_dst),
356 ntohs(th->th_dport));
363 isipv6 ? ip6->ip6_plen :
367 if (act == TA_OUTPUT) {
373 if (act == TA_OUTPUT)
374 len -= sizeof(struct tcphdr);
376 printf("[%lx..%lx)", (u_long)seq, (u_long)(seq + len));
378 printf("%lx", (u_long)seq);
379 printf("@%lx", (u_long)ack);
381 printf("(win=%x)", win);
382 flags = th->th_flags;
384 const char *cp = "<";
386 #define pf(flag, string) { \
387 if (th->th_flags & flag) { \
388 printf("%s%s", cp, string); \
404 printf("%s", prurequests[req]);
405 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
406 printf("<%s>", tcptimers[timer]);
409 printf(" -> %s", tcpstates[tp->t_state]);
410 /* print out internal state of tp !?! */
413 printf("\trcv_nxt %lx rcv_wnd %lx snd_una %lx snd_nxt %lx snd_max %lx\n",
414 (u_long)tp->rcv_nxt, tp->rcv_wnd,
415 (u_long)tp->snd_una, (u_long)tp->snd_nxt,
416 (u_long)tp->snd_max);
417 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %lx\n",
419 (u_long)tp->snd_wl2, (u_long)tp->snd_wnd);
421 /* print out timers? */
425 * kernel now uses callouts, not integer time values.
431 for (i = 0; i < TCPT_NTIMERS; i++) {
432 if (tp->t_timer[i] == 0)
434 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
436 printf(" (t_rxtshft=%d)", tp->t_rxtshift);
446 numeric(const void *v1, const void *v2)
448 const caddr_t *c1 = v1, *c2 = v2;
454 klseek(int fd, off_t base, int off)
456 lseek(fd, base, off);