trpt.c revision 1.1
1 /* 2 * Copyright (c) 1983, 1988 Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 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. 20 * 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 31 * SUCH DAMAGE. 32 */ 33 34 #ifndef lint 35 char copyright[] = 36 "@(#) Copyright (c) 1983, 1988 Regents of the University of California.\n\ 37 All rights reserved.\n"; 38 #endif /* not lint */ 39 40 #ifndef lint 41 static char sccsid[] = "@(#)trpt.c 5.14 (Berkeley) 7/1/91"; 42 #endif /* not lint */ 43 44 #include <sys/param.h> 45 #if BSD >= 199103 46 #define NEWVM 47 #endif 48 #ifndef NEWVM 49 #include <machine/pte.h> 50 #include <sys/vmmac.h> 51 #endif 52 #include <sys/socket.h> 53 #include <sys/socketvar.h> 54 #define PRUREQUESTS 55 #include <sys/protosw.h> 56 #include <sys/file.h> 57 58 #include <net/route.h> 59 #include <net/if.h> 60 61 #include <netinet/in.h> 62 #include <netinet/in_systm.h> 63 #include <netinet/ip.h> 64 #include <netinet/in_pcb.h> 65 #include <netinet/ip_var.h> 66 #include <netinet/tcp.h> 67 #define TCPSTATES 68 #include <netinet/tcp_fsm.h> 69 #include <netinet/tcp_seq.h> 70 #define TCPTIMERS 71 #include <netinet/tcp_timer.h> 72 #include <netinet/tcp_var.h> 73 #include <netinet/tcpip.h> 74 #define TANAMES 75 #include <netinet/tcp_debug.h> 76 77 #include <arpa/inet.h> 78 79 #include <stdio.h> 80 #include <errno.h> 81 #include <nlist.h> 82 #include <paths.h> 83 84 struct nlist nl[] = { 85 #define N_TCP_DEBUG 0 86 { "_tcp_debug" }, 87 #define N_TCP_DEBX 1 88 { "_tcp_debx" }, 89 #ifndef NEWVM 90 #define N_SYSMAP 2 91 { "_Sysmap" }, 92 #define N_SYSSIZE 3 93 { "_Syssize" }, 94 #endif 95 { "" }, 96 }; 97 98 #ifndef NEWVM 99 static struct pte *Sysmap; 100 #endif 101 static caddr_t tcp_pcbs[TCP_NDEBUG]; 102 static n_time ntime; 103 static int aflag, kflag, memf, follow, sflag, tflag; 104 105 main(argc, argv) 106 int argc; 107 char **argv; 108 { 109 extern char *optarg; 110 extern int optind; 111 int ch, i, jflag, npcbs, numeric(); 112 char *system, *core, *malloc(); 113 off_t lseek(); 114 115 jflag = npcbs = 0; 116 while ((ch = getopt(argc, argv, "afjp:st")) != EOF) 117 switch (ch) { 118 case 'a': 119 ++aflag; 120 break; 121 case 'f': 122 ++follow; 123 setlinebuf(stdout); 124 break; 125 case 'j': 126 ++jflag; 127 break; 128 case 'p': 129 if (npcbs >= TCP_NDEBUG) { 130 fputs("trpt: too many pcb's specified\n", 131 stderr); 132 exit(1); 133 } 134 (void)sscanf(optarg, "%x", (int *)&tcp_pcbs[npcbs++]); 135 break; 136 case 's': 137 ++sflag; 138 break; 139 case 't': 140 ++tflag; 141 break; 142 case '?': 143 default: 144 (void)fprintf(stderr, 145 "usage: trpt [-afjst] [-p hex-address] [system [core]]\n"); 146 exit(1); 147 } 148 argc -= optind; 149 argv += optind; 150 151 core = _PATH_KMEM; 152 if (argc > 0) { 153 system = *argv; 154 argc--, argv++; 155 if (argc > 0) { 156 core = *argv; 157 argc--, argv++; 158 ++kflag; 159 } 160 } 161 else 162 system = _PATH_UNIX; 163 164 if (nlist(system, nl) < 0 || !nl[0].n_value) { 165 fprintf(stderr, "trpt: %s: no namelist\n", system); 166 exit(1); 167 } 168 if ((memf = open(core, O_RDONLY)) < 0) { 169 perror(core); 170 exit(2); 171 } 172 if (kflag) { 173 #ifdef NEWVM 174 fputs("trpt: can't do core files yet\n", stderr); 175 exit(1); 176 #else 177 off_t off; 178 179 Sysmap = (struct pte *) 180 malloc((u_int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); 181 if (!Sysmap) { 182 fputs("trpt: can't get memory for Sysmap.\n", stderr); 183 exit(1); 184 } 185 off = nl[N_SYSMAP].n_value & ~KERNBASE; 186 (void)lseek(memf, off, L_SET); 187 (void)read(memf, (char *)Sysmap, 188 (int)(nl[N_SYSSIZE].n_value * sizeof(struct pte))); 189 #endif 190 } 191 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET); 192 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) != 193 sizeof(tcp_debx)) { 194 perror("trpt: tcp_debx"); 195 exit(3); 196 } 197 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET); 198 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) != 199 sizeof(tcp_debug)) { 200 perror("trpt: tcp_debug"); 201 exit(3); 202 } 203 /* 204 * If no control blocks have been specified, figure 205 * out how many distinct one we have and summarize 206 * them in tcp_pcbs for sorting the trace records 207 * below. 208 */ 209 if (!npcbs) { 210 for (i = 0; i < TCP_NDEBUG; i++) { 211 register struct tcp_debug *td = &tcp_debug[i]; 212 register int j; 213 214 if (td->td_tcb == 0) 215 continue; 216 for (j = 0; j < npcbs; j++) 217 if (tcp_pcbs[j] == td->td_tcb) 218 break; 219 if (j >= npcbs) 220 tcp_pcbs[npcbs++] = td->td_tcb; 221 } 222 if (!npcbs) 223 exit(0); 224 } 225 qsort(tcp_pcbs, npcbs, sizeof(caddr_t), numeric); 226 if (jflag) { 227 for (i = 0;;) { 228 printf("%x", (int)tcp_pcbs[i]); 229 if (++i == npcbs) 230 break; 231 fputs(", ", stdout); 232 } 233 putchar('\n'); 234 } 235 else for (i = 0; i < npcbs; i++) { 236 printf("\n%x:\n", (int)tcp_pcbs[i]); 237 dotrace(tcp_pcbs[i]); 238 } 239 exit(0); 240 } 241 242 dotrace(tcpcb) 243 register caddr_t tcpcb; 244 { 245 register struct tcp_debug *td; 246 register int i; 247 int prev_debx = tcp_debx; 248 249 again: if (--tcp_debx < 0) 250 tcp_debx = TCP_NDEBUG - 1; 251 for (i = prev_debx % TCP_NDEBUG; i < TCP_NDEBUG; i++) { 252 td = &tcp_debug[i]; 253 if (tcpcb && td->td_tcb != tcpcb) 254 continue; 255 ntime = ntohl(td->td_time); 256 tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb, 257 &td->td_ti, td->td_req); 258 if (i == tcp_debx) 259 goto done; 260 } 261 for (i = 0; i <= tcp_debx % TCP_NDEBUG; i++) { 262 td = &tcp_debug[i]; 263 if (tcpcb && td->td_tcb != tcpcb) 264 continue; 265 ntime = ntohl(td->td_time); 266 tcp_trace(td->td_act, td->td_ostate, td->td_tcb, &td->td_cb, 267 &td->td_ti, td->td_req); 268 } 269 done: if (follow) { 270 prev_debx = tcp_debx + 1; 271 if (prev_debx >= TCP_NDEBUG) 272 prev_debx = 0; 273 do { 274 sleep(1); 275 (void)klseek(memf, (off_t)nl[N_TCP_DEBX].n_value, L_SET); 276 if (read(memf, (char *)&tcp_debx, sizeof(tcp_debx)) != 277 sizeof(tcp_debx)) { 278 perror("trpt: tcp_debx"); 279 exit(3); 280 } 281 } while (tcp_debx == prev_debx); 282 (void)klseek(memf, (off_t)nl[N_TCP_DEBUG].n_value, L_SET); 283 if (read(memf, (char *)tcp_debug, sizeof(tcp_debug)) != 284 sizeof(tcp_debug)) { 285 perror("trpt: tcp_debug"); 286 exit(3); 287 } 288 goto again; 289 } 290 } 291 292 /* 293 * Tcp debug routines 294 */ 295 /*ARGSUSED*/ 296 tcp_trace(act, ostate, atp, tp, ti, req) 297 short act, ostate; 298 struct tcpcb *atp, *tp; 299 struct tcpiphdr *ti; 300 int req; 301 { 302 tcp_seq seq, ack; 303 int flags, len, win, timer; 304 305 printf("%03ld %s:%s ",(ntime/10) % 1000, tcpstates[ostate], 306 tanames[act]); 307 switch (act) { 308 case TA_INPUT: 309 case TA_OUTPUT: 310 case TA_DROP: 311 if (aflag) { 312 printf("(src=%s,%u, ", 313 inet_ntoa(ti->ti_src), ntohs(ti->ti_sport)); 314 printf("dst=%s,%u)", 315 inet_ntoa(ti->ti_dst), ntohs(ti->ti_dport)); 316 } 317 seq = ti->ti_seq; 318 ack = ti->ti_ack; 319 len = ti->ti_len; 320 win = ti->ti_win; 321 if (act == TA_OUTPUT) { 322 seq = ntohl(seq); 323 ack = ntohl(ack); 324 len = ntohs(len); 325 win = ntohs(win); 326 } 327 if (act == TA_OUTPUT) 328 len -= sizeof(struct tcphdr); 329 if (len) 330 printf("[%lx..%lx)", seq, seq + len); 331 else 332 printf("%lx", seq); 333 printf("@%lx", ack); 334 if (win) 335 printf("(win=%x)", win); 336 flags = ti->ti_flags; 337 if (flags) { 338 register char *cp = "<"; 339 #define pf(flag, string) { \ 340 if (ti->ti_flags&flag) { \ 341 (void)printf("%s%s", cp, string); \ 342 cp = ","; \ 343 } \ 344 } 345 pf(TH_SYN, "SYN"); 346 pf(TH_ACK, "ACK"); 347 pf(TH_FIN, "FIN"); 348 pf(TH_RST, "RST"); 349 pf(TH_PUSH, "PUSH"); 350 pf(TH_URG, "URG"); 351 printf(">"); 352 } 353 break; 354 case TA_USER: 355 timer = req >> 8; 356 req &= 0xff; 357 printf("%s", prurequests[req]); 358 if (req == PRU_SLOWTIMO || req == PRU_FASTTIMO) 359 printf("<%s>", tcptimers[timer]); 360 break; 361 } 362 printf(" -> %s", tcpstates[tp->t_state]); 363 /* print out internal state of tp !?! */ 364 printf("\n"); 365 if (sflag) { 366 printf("\trcv_nxt %lx rcv_wnd %x snd_una %lx snd_nxt %lx snd_max %lx\n", 367 tp->rcv_nxt, tp->rcv_wnd, tp->snd_una, tp->snd_nxt, 368 tp->snd_max); 369 printf("\tsnd_wl1 %lx snd_wl2 %lx snd_wnd %x\n", tp->snd_wl1, 370 tp->snd_wl2, tp->snd_wnd); 371 } 372 /* print out timers? */ 373 if (tflag) { 374 register char *cp = "\t"; 375 register int i; 376 377 for (i = 0; i < TCPT_NTIMERS; i++) { 378 if (tp->t_timer[i] == 0) 379 continue; 380 printf("%s%s=%d", cp, tcptimers[i], tp->t_timer[i]); 381 if (i == TCPT_REXMT) 382 printf(" (t_rxtshft=%d)", tp->t_rxtshift); 383 cp = ", "; 384 } 385 if (*cp != '\t') 386 putchar('\n'); 387 } 388 } 389 390 numeric(c1, c2) 391 caddr_t *c1, *c2; 392 { 393 return(*c1 - *c2); 394 } 395 396 klseek(fd, base, off) 397 int fd, off; 398 off_t base; 399 { 400 off_t lseek(); 401 402 #ifndef NEWVM 403 if (kflag) { /* get kernel pte */ 404 base &= ~KERNBASE; 405 base = ctob(Sysmap[btop(base)].pg_pfnum) + (base & PGOFSET); 406 } 407 #endif 408 (void)lseek(fd, base, off); 409 } 410
Indexes created Thu Sep 25 16:09:42 GMT 2025