1 /* $OpenBSD: tcpbench.c,v 1.59 2018/09/28 19:01:52 bluhm Exp $ */ 2 3 /* 4 * Copyright (c) 2008 Damien Miller <djm@mindrot.org> 5 * Copyright (c) 2011 Christiano F. Haesbaert <haesbaert@haesbaert.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include <sys/types.h> 21 #include <sys/time.h> 22 #include <sys/socket.h> 23 #include <sys/socketvar.h> 24 #include <sys/resource.h> 25 #include <sys/queue.h> 26 #include <sys/un.h> 27 28 #include <net/route.h> 29 30 #include <netinet/in.h> 31 #include <netinet/ip.h> 32 #include <netinet/tcp.h> 33 #include <netinet/tcp_timer.h> 34 #include <netinet/tcp_fsm.h> 35 #include <netinet/in_pcb.h> 36 #include <netinet/tcp_var.h> 37 38 #include <arpa/inet.h> 39 40 #include <unistd.h> 41 #include <limits.h> 42 #include <stdlib.h> 43 #include <stdio.h> 44 #include <string.h> 45 #include <errno.h> 46 #include <event.h> 47 #include <netdb.h> 48 #include <signal.h> 49 #include <err.h> 50 #include <fcntl.h> 51 #include <poll.h> 52 #include <paths.h> 53 54 #include <kvm.h> 55 #include <nlist.h> 56 57 #define DEFAULT_PORT "12345" 58 #define DEFAULT_STATS_INTERVAL 1000 /* ms */ 59 #define DEFAULT_BUF (256 * 1024) 60 #define DEFAULT_UDP_PKT (1500 - 28) /* TODO don't hardcode this */ 61 #define TCP_MODE !ptb->uflag 62 #define UDP_MODE ptb->uflag 63 #define MAX_FD 1024 64 65 /* Our tcpbench globals */ 66 struct { 67 int Sflag; /* Socket buffer size */ 68 u_int rflag; /* Report rate (ms) */ 69 int sflag; /* True if server */ 70 int Tflag; /* ToS if != -1 */ 71 int vflag; /* Verbose */ 72 int uflag; /* UDP mode */ 73 int Uflag; /* UNIX (AF_LOCAL) mode */ 74 int Rflag; /* randomize client write size */ 75 kvm_t *kvmh; /* Kvm handler */ 76 char **kvars; /* Kvm enabled vars */ 77 u_long ktcbtab; /* Ktcb */ 78 char *dummybuf; /* IO buffer */ 79 size_t dummybuf_len; /* IO buffer len */ 80 } tcpbench, *ptb; 81 82 struct tcpservsock { 83 struct event ev; 84 struct event evt; 85 int fd; 86 }; 87 88 /* stats for a single tcp connection, udp uses only one */ 89 struct statctx { 90 TAILQ_ENTRY(statctx) entry; 91 struct timeval t_start, t_last; 92 unsigned long long bytes; 93 int fd; 94 char *buf; 95 size_t buflen; 96 struct event ev; 97 /* TCP only */ 98 struct tcpservsock *tcp_ts; 99 u_long tcp_tcbaddr; 100 /* UDP only */ 101 u_long udp_slice_pkts; 102 }; 103 104 static void signal_handler(int, short, void *); 105 static void saddr_ntop(const struct sockaddr *, socklen_t, char *, size_t); 106 static void drop_gid(void); 107 static void set_slice_timer(int); 108 static void print_tcp_header(void); 109 static void kget(u_long, void *, size_t); 110 static u_long kfind_tcb(int); 111 static void kupdate_stats(u_long, struct inpcb *, struct tcpcb *, 112 struct socket *); 113 static void list_kvars(void); 114 static void check_kvar(const char *); 115 static char ** check_prepare_kvars(char *); 116 static void stats_prepare(struct statctx *); 117 static void tcp_stats_display(unsigned long long, long double, float, 118 struct statctx *, struct inpcb *, struct tcpcb *, struct socket *); 119 static void tcp_process_slice(int, short, void *); 120 static void tcp_server_handle_sc(int, short, void *); 121 static void tcp_server_accept(int, short, void *); 122 static void server_init(struct addrinfo *, struct statctx *); 123 static void client_handle_sc(int, short, void *); 124 static void client_init(struct addrinfo *, int, struct statctx *, 125 struct addrinfo *); 126 static int clock_gettime_tv(clockid_t, struct timeval *); 127 static void udp_server_handle_sc(int, short, void *); 128 static void udp_process_slice(int, short, void *); 129 static int map_tos(char *, int *); 130 /* 131 * We account the mainstats here, that is the stats 132 * for all connections, all variables starting with slice 133 * are used to account information for the timeslice 134 * between each output. Peak variables record the highest 135 * between all slices so far. 136 */ 137 static struct { 138 unsigned long long slice_bytes; /* bytes for last slice */ 139 long double peak_mbps; /* peak mbps so far */ 140 int nconns; /* connected clients */ 141 struct event timer; /* process timer */ 142 } mainstats; 143 144 /* When adding variables, also add to tcp_stats_display() */ 145 static const char *allowed_kvars[] = { 146 "inpcb.inp_flags", 147 "sockb.so_rcv.sb_cc", 148 "sockb.so_rcv.sb_hiwat", 149 "sockb.so_rcv.sb_wat", 150 "sockb.so_snd.sb_cc", 151 "sockb.so_snd.sb_hiwat", 152 "sockb.so_snd.sb_wat", 153 "tcpcb.last_ack_sent", 154 "tcpcb.max_sndwnd", 155 "tcpcb.rcv_adv", 156 "tcpcb.rcv_nxt", 157 "tcpcb.rcv_scale", 158 "tcpcb.rcv_wnd", 159 "tcpcb.rfbuf_cnt", 160 "tcpcb.rfbuf_ts", 161 "tcpcb.snd_cwnd", 162 "tcpcb.snd_max", 163 "tcpcb.snd_nxt", 164 "tcpcb.snd_scale", 165 "tcpcb.snd_ssthresh", 166 "tcpcb.snd_una", 167 "tcpcb.snd_wl1", 168 "tcpcb.snd_wl2", 169 "tcpcb.snd_wnd", 170 "tcpcb.t_rcvtime", 171 "tcpcb.t_rtseq", 172 "tcpcb.t_rttmin", 173 "tcpcb.t_rtttime", 174 "tcpcb.t_rttvar", 175 "tcpcb.t_srtt", 176 "tcpcb.ts_recent", 177 "tcpcb.ts_recent_age", 178 NULL 179 }; 180 181 TAILQ_HEAD(, statctx) sc_queue; 182 183 static void __dead 184 usage(void) 185 { 186 fprintf(stderr, 187 "usage: tcpbench -l\n" 188 " tcpbench [-46RUuv] [-B buf] [-b addr] [-k kvars] [-n connections]\n" 189 " [-p port] [-r interval] [-S space] [-T toskeyword]\n" 190 " [-t secs] [-V rtable] hostname\n" 191 " tcpbench -s [-46Uuv] [-B buf] [-k kvars] [-p port] [-r interval]\n" 192 " [-S space] [-T toskeyword] [-V rtable] [hostname]\n"); 193 exit(1); 194 } 195 196 static void 197 signal_handler(int sig, short event, void *bula) 198 { 199 /* 200 * signal handler rules don't apply, libevent decouples for us 201 */ 202 switch (sig) { 203 case SIGINT: 204 case SIGTERM: 205 case SIGHUP: 206 warnx("Terminated by signal %d", sig); 207 exit(0); 208 break; /* NOTREACHED */ 209 default: 210 errx(1, "unexpected signal %d", sig); 211 break; /* NOTREACHED */ 212 } 213 } 214 215 static void 216 saddr_ntop(const struct sockaddr *addr, socklen_t alen, char *buf, size_t len) 217 { 218 char hbuf[NI_MAXHOST], pbuf[NI_MAXSERV]; 219 int herr; 220 221 if (addr->sa_family == AF_UNIX) { 222 struct sockaddr_un *sun = (struct sockaddr_un *)addr; 223 snprintf(buf, len, "%s", sun->sun_path); 224 return; 225 } 226 if ((herr = getnameinfo(addr, alen, hbuf, sizeof(hbuf), 227 pbuf, sizeof(pbuf), NI_NUMERICHOST|NI_NUMERICSERV)) != 0) { 228 if (herr == EAI_SYSTEM) 229 err(1, "getnameinfo"); 230 else 231 errx(1, "getnameinfo: %s", gai_strerror(herr)); 232 } 233 snprintf(buf, len, "[%s]:%s", hbuf, pbuf); 234 } 235 236 static void 237 drop_gid(void) 238 { 239 gid_t gid; 240 241 gid = getgid(); 242 if (setresgid(gid, gid, gid) == -1) 243 err(1, "setresgid"); 244 } 245 246 static void 247 set_slice_timer(int on) 248 { 249 struct timeval tv; 250 251 if (ptb->rflag == 0) 252 return; 253 254 if (on) { 255 if (evtimer_pending(&mainstats.timer, NULL)) 256 return; 257 /* XXX Is there a better way to do this ? */ 258 tv.tv_sec = ptb->rflag / 1000; 259 tv.tv_usec = (ptb->rflag % 1000) * 1000; 260 261 evtimer_add(&mainstats.timer, &tv); 262 } else if (evtimer_pending(&mainstats.timer, NULL)) 263 evtimer_del(&mainstats.timer); 264 } 265 266 static int 267 clock_gettime_tv(clockid_t clock_id, struct timeval *tv) 268 { 269 struct timespec ts; 270 271 if (clock_gettime(clock_id, &ts) == -1) 272 return (-1); 273 274 TIMESPEC_TO_TIMEVAL(tv, &ts); 275 276 return (0); 277 } 278 279 static void 280 print_tcp_header(void) 281 { 282 char **kv; 283 284 if (ptb->rflag == 0) 285 return; 286 287 printf("%12s %14s %12s %8s ", "elapsed_ms", "bytes", "mbps", 288 "bwidth"); 289 for (kv = ptb->kvars; ptb->kvars != NULL && *kv != NULL; kv++) 290 printf("%s%s", kv != ptb->kvars ? "," : "", *kv); 291 printf("\n"); 292 } 293 294 static void 295 kget(u_long addr, void *buf, size_t size) 296 { 297 if (kvm_read(ptb->kvmh, addr, buf, size) != (ssize_t)size) 298 errx(1, "kvm_read: %s", kvm_geterr(ptb->kvmh)); 299 } 300 301 static u_long 302 kfind_tcb(int sock) 303 { 304 struct inpcbtable tcbtab; 305 struct inpcb *next, *prev; 306 struct inpcb inpcb, prevpcb; 307 struct tcpcb tcpcb; 308 309 struct sockaddr_storage me, them; 310 socklen_t melen, themlen; 311 struct sockaddr_in *in4; 312 struct sockaddr_in6 *in6; 313 char tmp1[64], tmp2[64]; 314 int nretry; 315 316 nretry = 10; 317 melen = themlen = sizeof(struct sockaddr_storage); 318 if (getsockname(sock, (struct sockaddr *)&me, &melen) == -1) 319 err(1, "getsockname"); 320 if (getpeername(sock, (struct sockaddr *)&them, &themlen) == -1) 321 err(1, "getpeername"); 322 if (me.ss_family != them.ss_family) 323 errx(1, "%s: me.ss_family != them.ss_family", __func__); 324 if (me.ss_family != AF_INET && me.ss_family != AF_INET6) 325 errx(1, "%s: unknown socket family", __func__); 326 if (ptb->vflag >= 2) { 327 saddr_ntop((struct sockaddr *)&me, me.ss_len, 328 tmp1, sizeof(tmp1)); 329 saddr_ntop((struct sockaddr *)&them, them.ss_len, 330 tmp2, sizeof(tmp2)); 331 fprintf(stderr, "Our socket local %s remote %s\n", tmp1, tmp2); 332 } 333 if (ptb->vflag >= 2) 334 fprintf(stderr, "Using PCB table at %lu\n", ptb->ktcbtab); 335 retry: 336 kget(ptb->ktcbtab, &tcbtab, sizeof(tcbtab)); 337 prev = NULL; 338 next = TAILQ_FIRST(&tcbtab.inpt_queue); 339 340 if (ptb->vflag >= 2) 341 fprintf(stderr, "PCB start at %p\n", next); 342 while (next != NULL) { 343 if (ptb->vflag >= 2) 344 fprintf(stderr, "Checking PCB %p\n", next); 345 kget((u_long)next, &inpcb, sizeof(inpcb)); 346 if (prev != NULL) { 347 kget((u_long)prev, &prevpcb, sizeof(prevpcb)); 348 if (TAILQ_NEXT(&prevpcb, inp_queue) != next) { 349 if (nretry--) { 350 warnx("PCB prev pointer insane"); 351 goto retry; 352 } else 353 errx(1, "PCB prev pointer insane," 354 " all attempts exhaused"); 355 } 356 } 357 prev = next; 358 next = TAILQ_NEXT(&inpcb, inp_queue); 359 360 if (me.ss_family == AF_INET) { 361 if ((inpcb.inp_flags & INP_IPV6) != 0) { 362 if (ptb->vflag >= 2) 363 fprintf(stderr, "Skip: INP_IPV6"); 364 continue; 365 } 366 if (ptb->vflag >= 2) { 367 inet_ntop(AF_INET, &inpcb.inp_laddr, 368 tmp1, sizeof(tmp1)); 369 inet_ntop(AF_INET, &inpcb.inp_faddr, 370 tmp2, sizeof(tmp2)); 371 fprintf(stderr, "PCB %p local: [%s]:%d " 372 "remote: [%s]:%d\n", prev, 373 tmp1, inpcb.inp_lport, 374 tmp2, inpcb.inp_fport); 375 } 376 in4 = (struct sockaddr_in *)&me; 377 if (memcmp(&in4->sin_addr, &inpcb.inp_laddr, 378 sizeof(struct in_addr)) != 0 || 379 in4->sin_port != inpcb.inp_lport) 380 continue; 381 in4 = (struct sockaddr_in *)&them; 382 if (memcmp(&in4->sin_addr, &inpcb.inp_faddr, 383 sizeof(struct in_addr)) != 0 || 384 in4->sin_port != inpcb.inp_fport) 385 continue; 386 } else { 387 if ((inpcb.inp_flags & INP_IPV6) == 0) 388 continue; 389 if (ptb->vflag >= 2) { 390 inet_ntop(AF_INET6, &inpcb.inp_laddr6, 391 tmp1, sizeof(tmp1)); 392 inet_ntop(AF_INET6, &inpcb.inp_faddr6, 393 tmp2, sizeof(tmp2)); 394 fprintf(stderr, "PCB %p local: [%s]:%d " 395 "remote: [%s]:%d\n", prev, 396 tmp1, inpcb.inp_lport, 397 tmp2, inpcb.inp_fport); 398 } 399 in6 = (struct sockaddr_in6 *)&me; 400 if (memcmp(&in6->sin6_addr, &inpcb.inp_laddr6, 401 sizeof(struct in6_addr)) != 0 || 402 in6->sin6_port != inpcb.inp_lport) 403 continue; 404 in6 = (struct sockaddr_in6 *)&them; 405 if (memcmp(&in6->sin6_addr, &inpcb.inp_faddr6, 406 sizeof(struct in6_addr)) != 0 || 407 in6->sin6_port != inpcb.inp_fport) 408 continue; 409 } 410 kget((u_long)inpcb.inp_ppcb, &tcpcb, sizeof(tcpcb)); 411 if (tcpcb.t_state != TCPS_ESTABLISHED) { 412 if (ptb->vflag >= 2) 413 fprintf(stderr, "Not established\n"); 414 continue; 415 } 416 if (ptb->vflag >= 2) 417 fprintf(stderr, "Found PCB at %p\n", prev); 418 return ((u_long)prev); 419 } 420 421 errx(1, "No matching PCB found"); 422 } 423 424 static void 425 kupdate_stats(u_long tcbaddr, struct inpcb *inpcb, 426 struct tcpcb *tcpcb, struct socket *sockb) 427 { 428 kget(tcbaddr, inpcb, sizeof(*inpcb)); 429 kget((u_long)inpcb->inp_ppcb, tcpcb, sizeof(*tcpcb)); 430 kget((u_long)inpcb->inp_socket, sockb, sizeof(*sockb)); 431 } 432 433 static void 434 check_kvar(const char *var) 435 { 436 u_int i; 437 438 for (i = 0; allowed_kvars[i] != NULL; i++) 439 if (strcmp(allowed_kvars[i], var) == 0) 440 return; 441 errx(1, "Unrecognised kvar: %s", var); 442 } 443 444 static void 445 list_kvars(void) 446 { 447 u_int i; 448 449 printf("Supported kernel variables:\n"); 450 for (i = 0; allowed_kvars[i] != NULL; i++) 451 printf("\t%s\n", allowed_kvars[i]); 452 } 453 454 static char ** 455 check_prepare_kvars(char *list) 456 { 457 char *item, **ret = NULL; 458 u_int n = 0; 459 460 while ((item = strsep(&list, ", \t\n")) != NULL) { 461 check_kvar(item); 462 if ((ret = reallocarray(ret, (++n + 1), sizeof(*ret))) == NULL) 463 err(1, "reallocarray(kvars)"); 464 if ((ret[n - 1] = strdup(item)) == NULL) 465 err(1, "strdup"); 466 ret[n] = NULL; 467 } 468 return (ret); 469 } 470 471 static void 472 stats_prepare(struct statctx *sc) 473 { 474 sc->buf = ptb->dummybuf; 475 sc->buflen = ptb->dummybuf_len; 476 477 if (ptb->kvars) 478 sc->tcp_tcbaddr = kfind_tcb(sc->fd); 479 if (clock_gettime_tv(CLOCK_MONOTONIC, &sc->t_start) == -1) 480 err(1, "clock_gettime_tv"); 481 sc->t_last = sc->t_start; 482 483 } 484 485 static void 486 tcp_stats_display(unsigned long long total_elapsed, long double mbps, 487 float bwperc, struct statctx *sc, struct inpcb *inpcb, 488 struct tcpcb *tcpcb, struct socket *sockb) 489 { 490 int j; 491 492 printf("%12llu %14llu %12.3Lf %7.2f%% ", total_elapsed, sc->bytes, 493 mbps, bwperc); 494 495 if (ptb->kvars != NULL) { 496 kupdate_stats(sc->tcp_tcbaddr, inpcb, tcpcb, 497 sockb); 498 499 for (j = 0; ptb->kvars[j] != NULL; j++) { 500 #define S(a) #a 501 #define P(b, v, f) \ 502 if (strcmp(ptb->kvars[j], S(b.v)) == 0) { \ 503 printf("%s"f, j > 0 ? "," : "", b->v); \ 504 continue; \ 505 } 506 P(inpcb, inp_flags, "0x%08x") 507 P(sockb, so_rcv.sb_cc, "%lu") 508 P(sockb, so_rcv.sb_hiwat, "%lu") 509 P(sockb, so_rcv.sb_wat, "%lu") 510 P(sockb, so_snd.sb_cc, "%lu") 511 P(sockb, so_snd.sb_hiwat, "%lu") 512 P(sockb, so_snd.sb_wat, "%lu") 513 P(tcpcb, last_ack_sent, "%u") 514 P(tcpcb, max_sndwnd, "%lu") 515 P(tcpcb, rcv_adv, "%u") 516 P(tcpcb, rcv_nxt, "%u") 517 P(tcpcb, rcv_scale, "%u") 518 P(tcpcb, rcv_wnd, "%lu") 519 P(tcpcb, rfbuf_cnt, "%u") 520 P(tcpcb, rfbuf_ts, "%u") 521 P(tcpcb, snd_cwnd, "%lu") 522 P(tcpcb, snd_max, "%u") 523 P(tcpcb, snd_nxt, "%u") 524 P(tcpcb, snd_scale, "%u") 525 P(tcpcb, snd_ssthresh, "%lu") 526 P(tcpcb, snd_una, "%u") 527 P(tcpcb, snd_wl1, "%u") 528 P(tcpcb, snd_wl2, "%u") 529 P(tcpcb, snd_wnd, "%lu") 530 P(tcpcb, t_rcvtime, "%u") 531 P(tcpcb, t_rtseq, "%u") 532 P(tcpcb, t_rttmin, "%hu") 533 P(tcpcb, t_rtttime, "%u") 534 P(tcpcb, t_rttvar, "%hu") 535 P(tcpcb, t_srtt, "%hu") 536 P(tcpcb, ts_recent, "%u") 537 P(tcpcb, ts_recent_age, "%u") 538 #undef S 539 #undef P 540 } 541 } 542 printf("\n"); 543 } 544 545 static void 546 tcp_process_slice(int fd, short event, void *bula) 547 { 548 unsigned long long total_elapsed, since_last; 549 long double mbps, slice_mbps = 0; 550 float bwperc; 551 struct statctx *sc; 552 struct timeval t_cur, t_diff; 553 struct inpcb inpcb; 554 struct tcpcb tcpcb; 555 struct socket sockb; 556 557 TAILQ_FOREACH(sc, &sc_queue, entry) { 558 if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1) 559 err(1, "clock_gettime_tv"); 560 if (ptb->kvars != NULL) /* process kernel stats */ 561 kupdate_stats(sc->tcp_tcbaddr, &inpcb, &tcpcb, 562 &sockb); 563 564 timersub(&t_cur, &sc->t_start, &t_diff); 565 total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000; 566 timersub(&t_cur, &sc->t_last, &t_diff); 567 since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000; 568 bwperc = (sc->bytes * 100.0) / mainstats.slice_bytes; 569 mbps = (sc->bytes * 8) / (since_last * 1000.0); 570 slice_mbps += mbps; 571 572 tcp_stats_display(total_elapsed, mbps, bwperc, sc, 573 &inpcb, &tcpcb, &sockb); 574 575 sc->t_last = t_cur; 576 sc->bytes = 0; 577 } 578 579 /* process stats for this slice */ 580 if (slice_mbps > mainstats.peak_mbps) 581 mainstats.peak_mbps = slice_mbps; 582 printf("Conn: %3d Mbps: %12.3Lf Peak Mbps: %12.3Lf Avg Mbps: %12.3Lf\n", 583 mainstats.nconns, slice_mbps, mainstats.peak_mbps, 584 mainstats.nconns ? slice_mbps / mainstats.nconns : 0); 585 mainstats.slice_bytes = 0; 586 587 set_slice_timer(mainstats.nconns > 0); 588 } 589 590 static void 591 udp_process_slice(int fd, short event, void *v_sc) 592 { 593 struct statctx *sc = v_sc; 594 unsigned long long total_elapsed, since_last, pps; 595 long double slice_mbps; 596 struct timeval t_cur, t_diff; 597 598 if (clock_gettime_tv(CLOCK_MONOTONIC, &t_cur) == -1) 599 err(1, "clock_gettime_tv"); 600 /* Calculate pps */ 601 timersub(&t_cur, &sc->t_start, &t_diff); 602 total_elapsed = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000; 603 timersub(&t_cur, &sc->t_last, &t_diff); 604 since_last = t_diff.tv_sec * 1000 + t_diff.tv_usec / 1000; 605 slice_mbps = (sc->bytes * 8) / (since_last * 1000.0); 606 pps = (sc->udp_slice_pkts * 1000) / since_last; 607 if (slice_mbps > mainstats.peak_mbps) 608 mainstats.peak_mbps = slice_mbps; 609 printf("Elapsed: %11llu Mbps: %11.3Lf Peak Mbps: %11.3Lf %s PPS: %7llu\n", 610 total_elapsed, slice_mbps, mainstats.peak_mbps, 611 ptb->sflag ? "Rx" : "Tx", pps); 612 613 /* Clean up this slice time */ 614 sc->t_last = t_cur; 615 sc->bytes = 0; 616 sc->udp_slice_pkts = 0; 617 set_slice_timer(1); 618 } 619 620 static void 621 udp_server_handle_sc(int fd, short event, void *v_sc) 622 { 623 ssize_t n; 624 struct statctx *sc = v_sc; 625 626 n = read(fd, ptb->dummybuf, ptb->dummybuf_len); 627 if (n == 0) 628 return; 629 else if (n == -1) { 630 if (errno != EINTR && errno != EWOULDBLOCK) 631 warn("fd %d read error", fd); 632 return; 633 } 634 635 if (ptb->vflag >= 3) 636 fprintf(stderr, "read: %zd bytes\n", n); 637 /* If this was our first packet, start slice timer */ 638 if (mainstats.peak_mbps == 0) 639 set_slice_timer(1); 640 /* Account packet */ 641 sc->udp_slice_pkts++; 642 sc->bytes += n; 643 } 644 645 static void 646 tcp_server_handle_sc(int fd, short event, void *v_sc) 647 { 648 struct statctx *sc = v_sc; 649 ssize_t n; 650 651 n = read(sc->fd, sc->buf, sc->buflen); 652 if (n == -1) { 653 if (errno != EINTR && errno != EWOULDBLOCK) 654 warn("fd %d read error", sc->fd); 655 return; 656 } else if (n == 0) { 657 if (ptb->vflag) 658 fprintf(stderr, "%8d closed by remote end\n", sc->fd); 659 660 TAILQ_REMOVE(&sc_queue, sc, entry); 661 662 event_del(&sc->ev); 663 close(sc->fd); 664 665 /* Some file descriptors are available again. */ 666 if (evtimer_pending(&sc->tcp_ts->evt, NULL)) { 667 evtimer_del(&sc->tcp_ts->evt); 668 event_add(&sc->tcp_ts->ev, NULL); 669 } 670 671 free(sc); 672 mainstats.nconns--; 673 return; 674 } 675 if (ptb->vflag >= 3) 676 fprintf(stderr, "read: %zd bytes\n", n); 677 sc->bytes += n; 678 mainstats.slice_bytes += n; 679 } 680 681 static void 682 tcp_server_accept(int fd, short event, void *arg) 683 { 684 struct tcpservsock *ts = arg; 685 int sock; 686 struct statctx *sc; 687 struct sockaddr_storage ss; 688 socklen_t sslen; 689 char tmp[128]; 690 691 sslen = sizeof(ss); 692 693 event_add(&ts->ev, NULL); 694 if (event & EV_TIMEOUT) 695 return; 696 if ((sock = accept4(fd, (struct sockaddr *)&ss, &sslen, SOCK_NONBLOCK)) 697 == -1) { 698 /* 699 * Pause accept if we are out of file descriptors, or 700 * libevent will haunt us here too. 701 */ 702 if (errno == ENFILE || errno == EMFILE) { 703 struct timeval evtpause = { 1, 0 }; 704 705 event_del(&ts->ev); 706 evtimer_add(&ts->evt, &evtpause); 707 } else if (errno != EWOULDBLOCK && errno != EINTR && 708 errno != ECONNABORTED) 709 warn("accept"); 710 return; 711 } 712 saddr_ntop((struct sockaddr *)&ss, sslen, 713 tmp, sizeof(tmp)); 714 if (ptb->Tflag != -1 && ss.ss_family == AF_INET) { 715 if (setsockopt(sock, IPPROTO_IP, IP_TOS, 716 &ptb->Tflag, sizeof(ptb->Tflag))) 717 err(1, "setsockopt IP_TOS"); 718 } 719 if (ptb->Tflag != -1 && ss.ss_family == AF_INET6) { 720 if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, 721 &ptb->Tflag, sizeof(ptb->Tflag))) 722 err(1, "setsockopt IPV6_TCLASS"); 723 } 724 /* Alloc client structure and register reading callback */ 725 if ((sc = calloc(1, sizeof(*sc))) == NULL) 726 err(1, "calloc"); 727 sc->tcp_ts = ts; 728 sc->fd = sock; 729 stats_prepare(sc); 730 event_set(&sc->ev, sc->fd, EV_READ | EV_PERSIST, 731 tcp_server_handle_sc, sc); 732 event_add(&sc->ev, NULL); 733 TAILQ_INSERT_TAIL(&sc_queue, sc, entry); 734 mainstats.nconns++; 735 if (mainstats.nconns == 1) 736 set_slice_timer(1); 737 if (ptb->vflag) 738 fprintf(stderr, "Accepted connection from %s, fd = %d\n", 739 tmp, sc->fd); 740 } 741 742 static void 743 server_init(struct addrinfo *aitop, struct statctx *udp_sc) 744 { 745 char tmp[128]; 746 int sock, on = 1; 747 struct addrinfo *ai; 748 struct event *ev; 749 struct tcpservsock *ts; 750 nfds_t lnfds; 751 752 lnfds = 0; 753 for (ai = aitop; ai != NULL; ai = ai->ai_next) { 754 saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp, sizeof(tmp)); 755 if (ptb->vflag) 756 fprintf(stderr, "Try to bind to %s\n", tmp); 757 if ((sock = socket(ai->ai_family, ai->ai_socktype, 758 ai->ai_protocol)) == -1) { 759 if (ai->ai_next == NULL) 760 err(1, "socket"); 761 if (ptb->vflag) 762 warn("socket"); 763 continue; 764 } 765 if (ptb->Tflag != -1 && ai->ai_family == AF_INET) { 766 if (setsockopt(sock, IPPROTO_IP, IP_TOS, 767 &ptb->Tflag, sizeof(ptb->Tflag))) 768 err(1, "setsockopt IP_TOS"); 769 } 770 if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) { 771 if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, 772 &ptb->Tflag, sizeof(ptb->Tflag))) 773 err(1, "setsockopt IPV6_TCLASS"); 774 } 775 if (setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, 776 &on, sizeof(on)) == -1) 777 warn("reuse port"); 778 if (bind(sock, ai->ai_addr, ai->ai_addrlen) != 0) { 779 if (ai->ai_next == NULL) 780 err(1, "bind"); 781 if (ptb->vflag) 782 warn("bind"); 783 close(sock); 784 continue; 785 } 786 if (ptb->Sflag) { 787 if (setsockopt(sock, SOL_SOCKET, SO_RCVBUF, 788 &ptb->Sflag, sizeof(ptb->Sflag)) == -1) 789 warn("set receive socket buffer size"); 790 } 791 if (TCP_MODE) { 792 if (listen(sock, 64) == -1) { 793 if (ai->ai_next == NULL) 794 err(1, "listen"); 795 if (ptb->vflag) 796 warn("listen"); 797 close(sock); 798 continue; 799 } 800 } 801 if (UDP_MODE) { 802 if ((ev = calloc(1, sizeof(*ev))) == NULL) 803 err(1, "calloc"); 804 event_set(ev, sock, EV_READ | EV_PERSIST, 805 udp_server_handle_sc, udp_sc); 806 event_add(ev, NULL); 807 } else { 808 if ((ts = calloc(1, sizeof(*ts))) == NULL) 809 err(1, "calloc"); 810 811 ts->fd = sock; 812 evtimer_set(&ts->evt, tcp_server_accept, ts); 813 event_set(&ts->ev, ts->fd, EV_READ, 814 tcp_server_accept, ts); 815 event_add(&ts->ev, NULL); 816 } 817 if (ptb->vflag >= 3) 818 fprintf(stderr, "bound to fd %d\n", sock); 819 lnfds++; 820 } 821 if (!ptb->Uflag) 822 freeaddrinfo(aitop); 823 if (lnfds == 0) 824 errx(1, "No working listen addresses found"); 825 } 826 827 static void 828 client_handle_sc(int fd, short event, void *v_sc) 829 { 830 struct statctx *sc = v_sc; 831 ssize_t n; 832 size_t blen = sc->buflen; 833 834 if (ptb->Rflag) 835 blen = arc4random_uniform(blen) + 1; 836 if ((n = write(sc->fd, sc->buf, blen)) == -1) { 837 if (errno == EINTR || errno == EWOULDBLOCK || 838 (UDP_MODE && errno == ENOBUFS)) 839 return; 840 err(1, "write"); 841 } 842 if (TCP_MODE && n == 0) { 843 fprintf(stderr, "Remote end closed connection"); 844 exit(1); 845 } 846 if (ptb->vflag >= 3) 847 fprintf(stderr, "write: %zd bytes\n", n); 848 sc->bytes += n; 849 mainstats.slice_bytes += n; 850 if (UDP_MODE) 851 sc->udp_slice_pkts++; 852 } 853 854 static void 855 client_init(struct addrinfo *aitop, int nconn, struct statctx *udp_sc, 856 struct addrinfo *aib) 857 { 858 struct statctx *sc; 859 struct addrinfo *ai; 860 char tmp[128]; 861 int i, r, sock; 862 863 sc = udp_sc; 864 for (i = 0; i < nconn; i++) { 865 for (sock = -1, ai = aitop; ai != NULL; ai = ai->ai_next) { 866 saddr_ntop(ai->ai_addr, ai->ai_addrlen, tmp, 867 sizeof(tmp)); 868 if (ptb->vflag && i == 0) 869 fprintf(stderr, "Trying %s\n", tmp); 870 if ((sock = socket(ai->ai_family, ai->ai_socktype, 871 ai->ai_protocol)) == -1) { 872 if (ai->ai_next == NULL) 873 err(1, "socket"); 874 if (ptb->vflag) 875 warn("socket"); 876 continue; 877 } 878 if (aib != NULL) { 879 saddr_ntop(aib->ai_addr, aib->ai_addrlen, 880 tmp, sizeof(tmp)); 881 if (ptb->vflag) 882 fprintf(stderr, 883 "Try to bind to %s\n", tmp); 884 if (bind(sock, (struct sockaddr *)aib->ai_addr, 885 aib->ai_addrlen) == -1) 886 err(1, "bind"); 887 } 888 if (ptb->Tflag != -1 && ai->ai_family == AF_INET) { 889 if (setsockopt(sock, IPPROTO_IP, IP_TOS, 890 &ptb->Tflag, sizeof(ptb->Tflag))) 891 err(1, "setsockopt IP_TOS"); 892 } 893 if (ptb->Tflag != -1 && ai->ai_family == AF_INET6) { 894 if (setsockopt(sock, IPPROTO_IPV6, IPV6_TCLASS, 895 &ptb->Tflag, sizeof(ptb->Tflag))) 896 err(1, "setsockopt IPV6_TCLASS"); 897 } 898 if (ptb->Sflag) { 899 if (setsockopt(sock, SOL_SOCKET, SO_SNDBUF, 900 &ptb->Sflag, sizeof(ptb->Sflag)) == -1) 901 warn("set send socket buffer size"); 902 } 903 if (connect(sock, ai->ai_addr, ai->ai_addrlen) != 0) { 904 if (ai->ai_next == NULL) 905 err(1, "connect"); 906 if (ptb->vflag) 907 warn("connect"); 908 close(sock); 909 sock = -1; 910 continue; 911 } 912 break; 913 } 914 if (sock == -1) 915 errx(1, "No host found"); 916 if ((r = fcntl(sock, F_GETFL)) == -1) 917 err(1, "fcntl(F_GETFL)"); 918 r |= O_NONBLOCK; 919 if (fcntl(sock, F_SETFL, r) == -1) 920 err(1, "fcntl(F_SETFL, O_NONBLOCK)"); 921 /* Alloc and prepare stats */ 922 if (TCP_MODE) { 923 if ((sc = calloc(1, sizeof(*sc))) == NULL) 924 err(1, "calloc"); 925 } 926 sc->fd = sock; 927 stats_prepare(sc); 928 event_set(&sc->ev, sc->fd, EV_WRITE | EV_PERSIST, 929 client_handle_sc, sc); 930 event_add(&sc->ev, NULL); 931 TAILQ_INSERT_TAIL(&sc_queue, sc, entry); 932 mainstats.nconns++; 933 if (mainstats.nconns == 1) 934 set_slice_timer(1); 935 } 936 if (!ptb->Uflag) 937 freeaddrinfo(aitop); 938 if (aib != NULL) 939 freeaddrinfo(aib); 940 941 if (ptb->vflag && nconn > 1) 942 fprintf(stderr, "%d connections established\n", 943 mainstats.nconns); 944 } 945 946 static int 947 map_tos(char *s, int *val) 948 { 949 /* DiffServ Codepoints and other TOS mappings */ 950 const struct toskeywords { 951 const char *keyword; 952 int val; 953 } *t, toskeywords[] = { 954 { "af11", IPTOS_DSCP_AF11 }, 955 { "af12", IPTOS_DSCP_AF12 }, 956 { "af13", IPTOS_DSCP_AF13 }, 957 { "af21", IPTOS_DSCP_AF21 }, 958 { "af22", IPTOS_DSCP_AF22 }, 959 { "af23", IPTOS_DSCP_AF23 }, 960 { "af31", IPTOS_DSCP_AF31 }, 961 { "af32", IPTOS_DSCP_AF32 }, 962 { "af33", IPTOS_DSCP_AF33 }, 963 { "af41", IPTOS_DSCP_AF41 }, 964 { "af42", IPTOS_DSCP_AF42 }, 965 { "af43", IPTOS_DSCP_AF43 }, 966 { "critical", IPTOS_PREC_CRITIC_ECP }, 967 { "cs0", IPTOS_DSCP_CS0 }, 968 { "cs1", IPTOS_DSCP_CS1 }, 969 { "cs2", IPTOS_DSCP_CS2 }, 970 { "cs3", IPTOS_DSCP_CS3 }, 971 { "cs4", IPTOS_DSCP_CS4 }, 972 { "cs5", IPTOS_DSCP_CS5 }, 973 { "cs6", IPTOS_DSCP_CS6 }, 974 { "cs7", IPTOS_DSCP_CS7 }, 975 { "ef", IPTOS_DSCP_EF }, 976 { "inetcontrol", IPTOS_PREC_INTERNETCONTROL }, 977 { "lowdelay", IPTOS_LOWDELAY }, 978 { "netcontrol", IPTOS_PREC_NETCONTROL }, 979 { "reliability", IPTOS_RELIABILITY }, 980 { "throughput", IPTOS_THROUGHPUT }, 981 { NULL, -1 }, 982 }; 983 984 for (t = toskeywords; t->keyword != NULL; t++) { 985 if (strcmp(s, t->keyword) == 0) { 986 *val = t->val; 987 return (1); 988 } 989 } 990 991 return (0); 992 } 993 994 static void 995 quit(int sig, short event, void *arg) 996 { 997 exit(0); 998 } 999 1000 int 1001 main(int argc, char **argv) 1002 { 1003 struct timeval tv; 1004 unsigned int secs, rtable; 1005 1006 char kerr[_POSIX2_LINE_MAX], *tmp; 1007 struct addrinfo *aitop, *aib, hints; 1008 const char *errstr; 1009 struct rlimit rl; 1010 int ch, herr, nconn; 1011 int family = PF_UNSPEC; 1012 struct nlist nl[] = { { "_tcbtable" }, { "" } }; 1013 const char *host = NULL, *port = DEFAULT_PORT, *srcbind = NULL; 1014 struct event ev_sigint, ev_sigterm, ev_sighup, ev_progtimer; 1015 struct statctx *udp_sc = NULL; 1016 struct sockaddr_un sock_un; 1017 1018 /* Init world */ 1019 setvbuf(stdout, NULL, _IOLBF, 0); 1020 ptb = &tcpbench; 1021 ptb->dummybuf_len = 0; 1022 ptb->Sflag = ptb->sflag = ptb->vflag = ptb->Rflag = ptb->Uflag = 0; 1023 ptb->kvmh = NULL; 1024 ptb->kvars = NULL; 1025 ptb->rflag = DEFAULT_STATS_INTERVAL; 1026 ptb->Tflag = -1; 1027 nconn = 1; 1028 aib = NULL; 1029 secs = 0; 1030 1031 while ((ch = getopt(argc, argv, "46b:B:hlk:n:p:Rr:sS:t:T:uUvV:")) != -1) { 1032 switch (ch) { 1033 case '4': 1034 family = PF_INET; 1035 break; 1036 case '6': 1037 family = PF_INET6; 1038 break; 1039 case 'b': 1040 srcbind = optarg; 1041 break; 1042 case 'l': 1043 list_kvars(); 1044 exit(0); 1045 case 'k': 1046 if ((tmp = strdup(optarg)) == NULL) 1047 err(1, "strdup"); 1048 ptb->kvars = check_prepare_kvars(tmp); 1049 free(tmp); 1050 break; 1051 case 'R': 1052 ptb->Rflag = 1; 1053 break; 1054 case 'r': 1055 ptb->rflag = strtonum(optarg, 0, 60 * 60 * 24 * 1000, 1056 &errstr); 1057 if (errstr != NULL) 1058 errx(1, "statistics interval is %s: %s", 1059 errstr, optarg); 1060 break; 1061 case 'p': 1062 port = optarg; 1063 break; 1064 case 's': 1065 ptb->sflag = 1; 1066 break; 1067 case 'S': 1068 ptb->Sflag = strtonum(optarg, 0, 1024*1024*1024, 1069 &errstr); 1070 if (errstr != NULL) 1071 errx(1, "socket buffer size is %s: %s", 1072 errstr, optarg); 1073 break; 1074 case 'B': 1075 ptb->dummybuf_len = strtonum(optarg, 0, 1024*1024*1024, 1076 &errstr); 1077 if (errstr != NULL) 1078 errx(1, "read/write buffer size is %s: %s", 1079 errstr, optarg); 1080 break; 1081 case 'v': 1082 ptb->vflag++; 1083 break; 1084 case 'V': 1085 rtable = (unsigned int)strtonum(optarg, 0, 1086 RT_TABLEID_MAX, &errstr); 1087 if (errstr) 1088 errx(1, "rtable value is %s: %s", 1089 errstr, optarg); 1090 if (setrtable(rtable) == -1) 1091 err(1, "setrtable"); 1092 break; 1093 case 'n': 1094 nconn = strtonum(optarg, 0, 65535, &errstr); 1095 if (errstr != NULL) 1096 errx(1, "number of connections is %s: %s", 1097 errstr, optarg); 1098 break; 1099 case 'u': 1100 ptb->uflag = 1; 1101 break; 1102 case 'U': 1103 ptb->Uflag = 1; 1104 break; 1105 case 'T': 1106 if (map_tos(optarg, &ptb->Tflag)) 1107 break; 1108 errstr = NULL; 1109 if (strlen(optarg) > 1 && optarg[0] == '0' && 1110 optarg[1] == 'x') 1111 ptb->Tflag = (int)strtol(optarg, NULL, 16); 1112 else 1113 ptb->Tflag = (int)strtonum(optarg, 0, 255, 1114 &errstr); 1115 if (ptb->Tflag == -1 || ptb->Tflag > 255 || errstr) 1116 errx(1, "illegal tos value %s", optarg); 1117 break; 1118 case 't': 1119 secs = strtonum(optarg, 1, UINT_MAX, &errstr); 1120 if (errstr != NULL) 1121 errx(1, "secs is %s: %s", 1122 errstr, optarg); 1123 break; 1124 case 'h': 1125 default: 1126 usage(); 1127 } 1128 } 1129 1130 if (pledge("stdio unveil rpath dns inet unix id proc", NULL) == -1) 1131 err(1, "pledge"); 1132 1133 argv += optind; 1134 argc -= optind; 1135 if ((argc != (ptb->sflag && !ptb->Uflag ? 0 : 1)) || 1136 (UDP_MODE && (ptb->kvars || nconn != 1))) 1137 usage(); 1138 1139 if (ptb->kvars) { 1140 if (unveil(_PATH_MEM, "r") == -1) 1141 err(1, "unveil"); 1142 if (unveil(_PATH_KMEM, "r") == -1) 1143 err(1, "unveil"); 1144 if (unveil(_PATH_KSYMS, "r") == -1) 1145 err(1, "unveil"); 1146 1147 if ((ptb->kvmh = kvm_openfiles(NULL, NULL, NULL, 1148 O_RDONLY, kerr)) == NULL) 1149 errx(1, "kvm_open: %s", kerr); 1150 drop_gid(); 1151 if (kvm_nlist(ptb->kvmh, nl) < 0 || nl[0].n_type == 0) 1152 errx(1, "kvm: no namelist"); 1153 ptb->ktcbtab = nl[0].n_value; 1154 } else 1155 drop_gid(); 1156 1157 if (!ptb->sflag || ptb->Uflag) 1158 host = argv[0]; 1159 1160 if (ptb->Uflag) 1161 if (unveil(host, "rwc") == -1) 1162 err(1, "unveil"); 1163 1164 if (pledge("stdio id dns inet unix", NULL) == -1) 1165 err(1, "pledge"); 1166 1167 /* 1168 * Rationale, 1169 * If TCP, use a big buffer with big reads/writes. 1170 * If UDP, use a big buffer in server and a buffer the size of a 1171 * ethernet packet. 1172 */ 1173 if (!ptb->dummybuf_len) { 1174 if (ptb->sflag || TCP_MODE) 1175 ptb->dummybuf_len = DEFAULT_BUF; 1176 else 1177 ptb->dummybuf_len = DEFAULT_UDP_PKT; 1178 } 1179 1180 bzero(&hints, sizeof(hints)); 1181 hints.ai_family = family; 1182 if (UDP_MODE) { 1183 hints.ai_socktype = SOCK_DGRAM; 1184 hints.ai_protocol = IPPROTO_UDP; 1185 } else { 1186 hints.ai_socktype = SOCK_STREAM; 1187 hints.ai_protocol = IPPROTO_TCP; 1188 } 1189 if (ptb->Uflag) { 1190 hints.ai_family = AF_UNIX; 1191 hints.ai_protocol = 0; 1192 sock_un.sun_family = AF_UNIX; 1193 if (strlcpy(sock_un.sun_path, host, sizeof(sock_un.sun_path)) >= 1194 sizeof(sock_un.sun_path)) 1195 errx(1, "socket name '%s' too long", host); 1196 hints.ai_addr = (struct sockaddr *)&sock_un; 1197 hints.ai_addrlen = sizeof(sock_un); 1198 aitop = &hints; 1199 } else { 1200 if (ptb->sflag) 1201 hints.ai_flags = AI_PASSIVE; 1202 if (srcbind != NULL) { 1203 hints.ai_flags |= AI_NUMERICHOST; 1204 herr = getaddrinfo(srcbind, NULL, &hints, &aib); 1205 hints.ai_flags &= ~AI_NUMERICHOST; 1206 if (herr != 0) { 1207 if (herr == EAI_SYSTEM) 1208 err(1, "getaddrinfo"); 1209 else 1210 errx(1, "getaddrinfo: %s", 1211 gai_strerror(herr)); 1212 } 1213 } 1214 if ((herr = getaddrinfo(host, port, &hints, &aitop)) != 0) { 1215 if (herr == EAI_SYSTEM) 1216 err(1, "getaddrinfo"); 1217 else 1218 errx(1, "getaddrinfo: %s", gai_strerror(herr)); 1219 } 1220 } 1221 1222 if (pledge("stdio id inet unix", NULL) == -1) 1223 err(1, "pledge"); 1224 1225 if (getrlimit(RLIMIT_NOFILE, &rl) == -1) 1226 err(1, "getrlimit"); 1227 if (rl.rlim_cur < MAX_FD) 1228 rl.rlim_cur = MAX_FD; 1229 if (setrlimit(RLIMIT_NOFILE, &rl)) 1230 err(1, "setrlimit"); 1231 if (getrlimit(RLIMIT_NOFILE, &rl) == -1) 1232 err(1, "getrlimit"); 1233 1234 if (pledge("stdio inet unix", NULL) == -1) 1235 err(1, "pledge"); 1236 1237 /* Init world */ 1238 TAILQ_INIT(&sc_queue); 1239 if ((ptb->dummybuf = malloc(ptb->dummybuf_len)) == NULL) 1240 err(1, "malloc"); 1241 arc4random_buf(ptb->dummybuf, ptb->dummybuf_len); 1242 1243 /* Setup libevent and signals */ 1244 event_init(); 1245 signal_set(&ev_sigterm, SIGTERM, signal_handler, NULL); 1246 signal_set(&ev_sighup, SIGHUP, signal_handler, NULL); 1247 signal_set(&ev_sigint, SIGINT, signal_handler, NULL); 1248 signal_add(&ev_sigint, NULL); 1249 signal_add(&ev_sigterm, NULL); 1250 signal_add(&ev_sighup, NULL); 1251 signal(SIGPIPE, SIG_IGN); 1252 1253 if (UDP_MODE) { 1254 if ((udp_sc = calloc(1, sizeof(*udp_sc))) == NULL) 1255 err(1, "calloc"); 1256 udp_sc->fd = -1; 1257 stats_prepare(udp_sc); 1258 evtimer_set(&mainstats.timer, udp_process_slice, udp_sc); 1259 } else { 1260 print_tcp_header(); 1261 evtimer_set(&mainstats.timer, tcp_process_slice, NULL); 1262 } 1263 1264 if (ptb->sflag) 1265 server_init(aitop, udp_sc); 1266 else { 1267 if (secs > 0) { 1268 timerclear(&tv); 1269 tv.tv_sec = secs + 1; 1270 evtimer_set(&ev_progtimer, quit, NULL); 1271 evtimer_add(&ev_progtimer, &tv); 1272 } 1273 client_init(aitop, nconn, udp_sc, aib); 1274 1275 if (pledge("stdio", NULL) == -1) 1276 err(1, "pledge"); 1277 } 1278 1279 /* libevent main loop*/ 1280 event_dispatch(); 1281 1282 return (0); 1283 } 1284