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 $
32 * $DragonFly: src/usr.sbin/trpt/trpt.c,v 1.4 2004/03/21 22:41:24 cpressey Exp $
35 #include <sys/param.h>
36 #include <sys/queue.h>
37 #include <sys/socket.h>
38 #include <sys/socketvar.h>
40 #include <sys/protosw.h>
44 #include <net/route.h>
47 #include <netinet/in.h>
48 #include <netinet/in_systm.h>
49 #include <netinet/ip.h>
51 #include <netinet/ip6.h>
53 #include <netinet/ip_var.h>
54 #include <netinet/tcp.h>
56 #include <netinet/tcp_fsm.h>
57 #include <netinet/tcp_seq.h>
59 #include <netinet/tcp_timer.h>
60 #include <netinet/tcp_var.h>
61 #include <netinet/tcpip.h>
63 #include <netinet/tcp_debug.h>
65 #include <arpa/inet.h>
76 { .n_name = "_tcp_debug" },
78 { .n_name = "_tcp_debx" },
82 static caddr_t tcp_pcbs[TCP_NDEBUG];
84 static int aflag, kflag, memf, follow, sflag, tflag;
86 void dotrace(caddr_t);
87 void klseek(int, off_t, int);
88 int numeric(const void *, const void *);
89 void tcp_trace(short, short, struct tcpcb *, struct tcpcb *,
90 int, void *, struct tcphdr *, int);
91 static void usage(void);
94 main(int argc, char **argv)
96 int ch, i, jflag, npcbs;
97 const char *syst, *core;
100 while ((ch = getopt(argc, argv, "afjp:st")) != -1)
113 if (npcbs >= TCP_NDEBUG)
114 errx(1, "too many pcb's specified");
115 sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]);
140 * Discard setgid privileges if not the running kernel so that
141 * bad guys can't print interesting stuff from kernel memory.
145 syst = getbootfile();
148 if (nlist(syst, nl) < 0 || !nl[0].n_value)
149 errx(1, "%s: no namelist", syst);
150 if ((memf = open(core, O_RDONLY)) < 0)
153 errx(1, "can't do core files yet");
154 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
155 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
158 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
159 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
163 * If no control blocks have been specified, figure
164 * out how many distinct one we have and summarize
165 * them in tcp_pcbs for sorting the trace records
169 for (i = 0; i < TCP_NDEBUG; i++) {
170 struct tcp_debug *td = &tcp_debug[i];
175 for (j = 0; j < npcbs; j++)
176 if (tcp_pcbs[j] == td->td_tcb)
179 tcp_pcbs[npcbs++] = td->td_tcb;
184 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric);
187 printf("%p", (void *)tcp_pcbs[i]);
194 for (i = 0; i < npcbs; i++) {
195 printf("\n%p:\n", (void *)tcp_pcbs[i]);
196 dotrace(tcp_pcbs[i]);
206 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n");
211 dotrace(caddr_t tcpcb)
213 struct tcp_debug *td;
215 int prev_debx, family;
217 prev_debx = tcp_debx;
218 again: if (--tcp_debx < 0)
219 tcp_debx = TCP_NDEBUG - 1;
220 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) {
222 if (tcpcb && td->td_tcb != tcpcb)
224 ntime = ntohl(td->td_time);
226 family = td->td_family;
232 tcp_trace(td->td_act, td->td_ostate,
233 (struct tcpcb *)td->td_tcb,
234 &td->td_cb, td->td_family, &td->td_ti.ti_i,
235 &td->td_ti.ti_t, td->td_req);
239 tcp_trace(td->td_act, td->td_ostate,
240 (struct tcpcb *)td->td_tcb,
241 &td->td_cb, td->td_family, &td->td_ti6.ip6,
242 &td->td_ti6.th, td->td_req);
249 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) {
251 if (tcpcb && td->td_tcb != tcpcb)
253 ntime = ntohl(td->td_time);
255 family = td->td_family;
261 tcp_trace(td->td_act, td->td_ostate,
262 (struct tcpcb *)td->td_tcb,
263 &td->td_cb, td->td_family, &td->td_ti.ti_i,
264 &td->td_ti.ti_t, td->td_req);
268 tcp_trace(td->td_act, td->td_ostate,
269 (struct tcpcb *)td->td_tcb,
270 &td->td_cb, td->td_family, &td->td_ti6.ip6,
271 &td->td_ti6.th, td->td_req);
277 prev_debx = tcp_debx + 1;
278 if (prev_debx >= TCP_NDEBUG)
282 klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET);
283 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) !=
286 } while (tcp_debx == prev_debx);
287 klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET);
288 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) !=
300 tcp_trace(short act, short ostate, struct tcpcb *atp __unused,
301 struct tcpcb *tp, int family, void *ip, struct tcphdr *th, int req)
304 int flags, len, win, timer;
305 struct ip *ip4 = NULL;
307 int isipv6 = 0, nopkt = 1;
308 struct ip6_hdr *ip6 = NULL;
309 char ntop_buf[INET6_ADDRSTRLEN];
317 ip4 = (struct ip *)ip;
322 ip6 = (struct ip6_hdr *)ip;
328 ip4 = (struct ip *)ip;
330 printf("%03ld %s:%s ",(long)(ntime/10) % 1000, tcpstates[ostate],
341 printf("(src=%s,%u, ",
345 ? inet_ntop(AF_INET6, &ip6->ip6_src, ntop_buf,
348 inet_ntoa(ip4->ip_src),
349 ntohs(th->th_sport));
353 ? inet_ntop(AF_INET6, &ip6->ip6_dst, ntop_buf,
356 inet_ntoa(ip4->ip_dst),
357 ntohs(th->th_dport));
364 isipv6 ? ip6->ip6_plen :
368 if (act == TA_OUTPUT) {
374 if (act == TA_OUTPUT)
375 len -= sizeof(struct tcphdr);
377 printf("[%lx..%lx)", (u_long)seq, (u_long)(seq + len));
379 printf("%lx", (u_long)seq);
380 printf("@%lx", (u_long)ack);
382 printf("(win=%x)", win);
383 flags = th->th_flags;
385 const char *cp = "<";
387 #define pf(flag, string) { \
388 if (th->th_flags & flag) { \
389 printf("%s%s", cp, string); \
405 printf("%s", prurequests[req]);
406 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO)
407 printf("<%s>", tcptimers[timer]);
410 printf(" -> %s", tcpstates[tp->t_state]);
411 /* print out internal state of tp !?! */
414 printf("\trcv_nxt %lx rcv_wnd %lx snd_una %lx snd_nxt %lx snd_max %lx\n",
415 (u_long)tp->rcv_nxt, tp->rcv_wnd,
416 (u_long)tp->snd_una, (u_long)tp->snd_nxt,
417 (u_long)tp->snd_max);
418 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %lx\n",
420 (u_long)tp->snd_wl2, (u_long)tp->snd_wnd);
422 /* print out timers? */
426 * kernel now uses callouts, not integer time values.
432 for (i = 0; i < TCPT_NTIMERS; i++) {
433 if (tp->t_timer[i] == 0)
435 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]);
437 printf(" (t_rxtshft=%d)", tp->t_rxtshift);
447 numeric(const void *v1, const void *v2)
449 const caddr_t *c1 = v1, *c2 = v2;
455 klseek(int fd, off_t base, int off)
457 lseek(fd, base, off);