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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 | // SPDX-License-Identifier: GPL-2.0 #define _GNU_SOURCE #include <arpa/inet.h> #include <errno.h> #include <error.h> #include <linux/errqueue.h> #include <linux/net_tstamp.h> #include <netinet/if_ether.h> #include <netinet/in.h> #include <netinet/ip.h> #include <netinet/ip6.h> #include <netinet/udp.h> #include <poll.h> #include <sched.h> #include <signal.h> #include <stdbool.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <sys/socket.h> #include <sys/time.h> #include <sys/poll.h> #include <sys/types.h> #include <unistd.h> #include "../kselftest.h" #ifndef ETH_MAX_MTU #define ETH_MAX_MTU 0xFFFFU #endif #ifndef UDP_SEGMENT #define UDP_SEGMENT 103 #endif #ifndef SO_ZEROCOPY #define SO_ZEROCOPY 60 #endif #ifndef SO_EE_ORIGIN_ZEROCOPY #define SO_EE_ORIGIN_ZEROCOPY 5 #endif #ifndef MSG_ZEROCOPY #define MSG_ZEROCOPY 0x4000000 #endif #ifndef ENOTSUPP #define ENOTSUPP 524 #endif #define NUM_PKT 100 static bool cfg_cache_trash; static int cfg_cpu = -1; static int cfg_connected = true; static int cfg_family = PF_UNSPEC; static uint16_t cfg_mss; static int cfg_payload_len = (1472 * 42); static int cfg_port = 8000; static int cfg_runtime_ms = -1; static bool cfg_poll; static int cfg_poll_loop_timeout_ms = 2000; static bool cfg_segment; static bool cfg_sendmmsg; static bool cfg_tcp; static uint32_t cfg_tx_ts = SOF_TIMESTAMPING_TX_SOFTWARE; static bool cfg_tx_tstamp; static bool cfg_audit; static bool cfg_verbose; static bool cfg_zerocopy; static int cfg_msg_nr; static uint16_t cfg_gso_size; static unsigned long total_num_msgs; static unsigned long total_num_sends; static unsigned long stat_tx_ts; static unsigned long stat_tx_ts_errors; static unsigned long tstart; static unsigned long tend; static unsigned long stat_zcopies; static socklen_t cfg_alen; static struct sockaddr_storage cfg_dst_addr; static bool interrupted; static char buf[NUM_PKT][ETH_MAX_MTU]; static void sigint_handler(int signum) { if (signum == SIGINT) interrupted = true; } static unsigned long gettimeofday_ms(void) { struct timeval tv; gettimeofday(&tv, NULL); return (tv.tv_sec * 1000) + (tv.tv_usec / 1000); } static int set_cpu(int cpu) { cpu_set_t mask; CPU_ZERO(&mask); CPU_SET(cpu, &mask); if (sched_setaffinity(0, sizeof(mask), &mask)) error(1, 0, "setaffinity %d", cpu); return 0; } static void setup_sockaddr(int domain, const char *str_addr, void *sockaddr) { struct sockaddr_in6 *addr6 = (void *) sockaddr; struct sockaddr_in *addr4 = (void *) sockaddr; switch (domain) { case PF_INET: addr4->sin_family = AF_INET; addr4->sin_port = htons(cfg_port); if (inet_pton(AF_INET, str_addr, &(addr4->sin_addr)) != 1) error(1, 0, "ipv4 parse error: %s", str_addr); break; case PF_INET6: addr6->sin6_family = AF_INET6; addr6->sin6_port = htons(cfg_port); if (inet_pton(AF_INET6, str_addr, &(addr6->sin6_addr)) != 1) error(1, 0, "ipv6 parse error: %s", str_addr); break; default: error(1, 0, "illegal domain"); } } static void flush_cmsg(struct cmsghdr *cmsg) { struct sock_extended_err *err; struct scm_timestamping *tss; __u32 lo; __u32 hi; int i; switch (cmsg->cmsg_level) { case SOL_SOCKET: if (cmsg->cmsg_type == SO_TIMESTAMPING) { i = (cfg_tx_ts == SOF_TIMESTAMPING_TX_HARDWARE) ? 2 : 0; tss = (struct scm_timestamping *)CMSG_DATA(cmsg); if (tss->ts[i].tv_sec == 0) stat_tx_ts_errors++; } else { error(1, 0, "unknown SOL_SOCKET cmsg type=%u\n", cmsg->cmsg_type); } break; case SOL_IP: case SOL_IPV6: switch (cmsg->cmsg_type) { case IP_RECVERR: case IPV6_RECVERR: { err = (struct sock_extended_err *)CMSG_DATA(cmsg); switch (err->ee_origin) { case SO_EE_ORIGIN_TIMESTAMPING: /* Got a TX timestamp from error queue */ stat_tx_ts++; break; case SO_EE_ORIGIN_ICMP: case SO_EE_ORIGIN_ICMP6: if (cfg_verbose) fprintf(stderr, "received ICMP error: type=%u, code=%u\n", err->ee_type, err->ee_code); break; case SO_EE_ORIGIN_ZEROCOPY: { lo = err->ee_info; hi = err->ee_data; /* range of IDs acknowledged */ stat_zcopies += hi - lo + 1; break; } case SO_EE_ORIGIN_LOCAL: if (cfg_verbose) fprintf(stderr, "received packet with local origin: %u\n", err->ee_origin); break; default: error(0, 1, "received packet with origin: %u", err->ee_origin); } break; } default: error(0, 1, "unknown IP msg type=%u\n", cmsg->cmsg_type); break; } break; default: error(0, 1, "unknown cmsg level=%u\n", cmsg->cmsg_level); } } static void flush_errqueue_recv(int fd) { char control[CMSG_SPACE(sizeof(struct scm_timestamping)) + CMSG_SPACE(sizeof(struct sock_extended_err)) + CMSG_SPACE(sizeof(struct sockaddr_in6))] = {0}; struct msghdr msg = {0}; struct cmsghdr *cmsg; int ret; while (1) { msg.msg_control = control; msg.msg_controllen = sizeof(control); ret = recvmsg(fd, &msg, MSG_ERRQUEUE); if (ret == -1 && errno == EAGAIN) break; if (ret == -1) error(1, errno, "errqueue"); if (msg.msg_flags != MSG_ERRQUEUE) error(1, 0, "errqueue: flags 0x%x\n", msg.msg_flags); if (cfg_audit) { for (cmsg = CMSG_FIRSTHDR(&msg); cmsg; cmsg = CMSG_NXTHDR(&msg, cmsg)) flush_cmsg(cmsg); } msg.msg_flags = 0; } } static void flush_errqueue(int fd, const bool do_poll, unsigned long poll_timeout, const bool poll_err) { if (do_poll) { struct pollfd fds = {0}; int ret; fds.fd = fd; ret = poll(&fds, 1, poll_timeout); if (ret == 0) { if ((cfg_verbose) && (poll_err)) fprintf(stderr, "poll timeout\n"); } else if (ret < 0) { error(1, errno, "poll"); } } flush_errqueue_recv(fd); } static void flush_errqueue_retry(int fd, unsigned long num_sends) { unsigned long tnow, tstop; bool first_try = true; tnow = gettimeofday_ms(); tstop = tnow + cfg_poll_loop_timeout_ms; do { flush_errqueue(fd, true, tstop - tnow, first_try); first_try = false; tnow = gettimeofday_ms(); } while ((stat_zcopies != num_sends) && (tnow < tstop)); } static int send_tcp(int fd, char *data) { int ret, done = 0, count = 0; while (done < cfg_payload_len) { ret = send(fd, data + done, cfg_payload_len - done, cfg_zerocopy ? MSG_ZEROCOPY : 0); if (ret == -1) error(1, errno, "write"); done += ret; count++; } return count; } static int send_udp(int fd, char *data) { int ret, total_len, len, count = 0; total_len = cfg_payload_len; while (total_len) { len = total_len < cfg_mss ? total_len : cfg_mss; ret = sendto(fd, data, len, cfg_zerocopy ? MSG_ZEROCOPY : 0, cfg_connected ? NULL : (void *)&cfg_dst_addr, cfg_connected ? 0 : cfg_alen); if (ret == -1) error(1, errno, "write"); if (ret != len) error(1, errno, "write: %uB != %uB\n", ret, len); total_len -= len; count++; } return count; } static void send_ts_cmsg(struct cmsghdr *cm) { uint32_t *valp; cm->cmsg_level = SOL_SOCKET; cm->cmsg_type = SO_TIMESTAMPING; cm->cmsg_len = CMSG_LEN(sizeof(cfg_tx_ts)); valp = (void *)CMSG_DATA(cm); *valp = cfg_tx_ts; } static int send_udp_sendmmsg(int fd, char *data) { char control[CMSG_SPACE(sizeof(cfg_tx_ts))] = {0}; const int max_nr_msg = ETH_MAX_MTU / ETH_DATA_LEN; struct mmsghdr mmsgs[max_nr_msg]; struct iovec iov[max_nr_msg]; unsigned int off = 0, left; size_t msg_controllen = 0; int i = 0, ret; memset(mmsgs, 0, sizeof(mmsgs)); if (cfg_tx_tstamp) { struct msghdr msg = {0}; struct cmsghdr *cmsg; msg.msg_control = control; msg.msg_controllen = sizeof(control); cmsg = CMSG_FIRSTHDR(&msg); send_ts_cmsg(cmsg); msg_controllen += CMSG_SPACE(sizeof(cfg_tx_ts)); } left = cfg_payload_len; while (left) { if (i == max_nr_msg) error(1, 0, "sendmmsg: exceeds max_nr_msg"); iov[i].iov_base = data + off; iov[i].iov_len = cfg_mss < left ? cfg_mss : left; mmsgs[i].msg_hdr.msg_iov = iov + i; mmsgs[i].msg_hdr.msg_iovlen = 1; mmsgs[i].msg_hdr.msg_name = (void *)&cfg_dst_addr; mmsgs[i].msg_hdr.msg_namelen = cfg_alen; if (msg_controllen) { mmsgs[i].msg_hdr.msg_control = control; mmsgs[i].msg_hdr.msg_controllen = msg_controllen; } off += iov[i].iov_len; left -= iov[i].iov_len; i++; } ret = sendmmsg(fd, mmsgs, i, cfg_zerocopy ? MSG_ZEROCOPY : 0); if (ret == -1) error(1, errno, "sendmmsg"); return ret; } static void send_udp_segment_cmsg(struct cmsghdr *cm) { uint16_t *valp; cm->cmsg_level = SOL_UDP; cm->cmsg_type = UDP_SEGMENT; cm->cmsg_len = CMSG_LEN(sizeof(cfg_gso_size)); valp = (void *)CMSG_DATA(cm); *valp = cfg_gso_size; } static int send_udp_segment(int fd, char *data) { char control[CMSG_SPACE(sizeof(cfg_gso_size)) + CMSG_SPACE(sizeof(cfg_tx_ts))] = {0}; struct msghdr msg = {0}; struct iovec iov = {0}; size_t msg_controllen; struct cmsghdr *cmsg; int ret; iov.iov_base = data; iov.iov_len = cfg_payload_len; msg.msg_iov = &iov; msg.msg_iovlen = 1; msg.msg_control = control; msg.msg_controllen = sizeof(control); cmsg = CMSG_FIRSTHDR(&msg); send_udp_segment_cmsg(cmsg); msg_controllen = CMSG_SPACE(sizeof(cfg_mss)); if (cfg_tx_tstamp) { cmsg = CMSG_NXTHDR(&msg, cmsg); send_ts_cmsg(cmsg); msg_controllen += CMSG_SPACE(sizeof(cfg_tx_ts)); } msg.msg_controllen = msg_controllen; msg.msg_name = (void *)&cfg_dst_addr; msg.msg_namelen = cfg_alen; ret = sendmsg(fd, &msg, cfg_zerocopy ? MSG_ZEROCOPY : 0); if (ret == -1) error(1, errno, "sendmsg"); if (ret != iov.iov_len) error(1, 0, "sendmsg: %u != %llu\n", ret, (unsigned long long)iov.iov_len); return 1; } static void usage(const char *filepath) { error(1, 0, "Usage: %s [-46acmHPtTuvz] [-C cpu] [-D dst ip] [-l secs] " "[-L secs] [-M messagenr] [-p port] [-s sendsize] [-S gsosize]", filepath); } static void parse_opts(int argc, char **argv) { const char *bind_addr = NULL; int max_len, hdrlen; int c; while ((c = getopt(argc, argv, "46acC:D:Hl:L:mM:p:s:PS:tTuvz")) != -1) { switch (c) { case '4': if (cfg_family != PF_UNSPEC) error(1, 0, "Pass one of -4 or -6"); cfg_family = PF_INET; cfg_alen = sizeof(struct sockaddr_in); break; case '6': if (cfg_family != PF_UNSPEC) error(1, 0, "Pass one of -4 or -6"); cfg_family = PF_INET6; cfg_alen = sizeof(struct sockaddr_in6); break; case 'a': cfg_audit = true; break; case 'c': cfg_cache_trash = true; break; case 'C': cfg_cpu = strtol(optarg, NULL, 0); break; case 'D': bind_addr = optarg; break; case 'l': cfg_runtime_ms = strtoul(optarg, NULL, 10) * 1000; break; case 'L': cfg_poll_loop_timeout_ms = strtoul(optarg, NULL, 10) * 1000; break; case 'm': cfg_sendmmsg = true; break; case 'M': cfg_msg_nr = strtoul(optarg, NULL, 10); break; case 'p': cfg_port = strtoul(optarg, NULL, 0); break; case 'P': cfg_poll = true; break; case 's': cfg_payload_len = strtoul(optarg, NULL, 0); break; case 'S': cfg_gso_size = strtoul(optarg, NULL, 0); cfg_segment = true; break; case 'H': cfg_tx_ts = SOF_TIMESTAMPING_TX_HARDWARE; cfg_tx_tstamp = true; break; case 't': cfg_tcp = true; break; case 'T': cfg_tx_tstamp = true; break; case 'u': cfg_connected = false; break; case 'v': cfg_verbose = true; break; case 'z': cfg_zerocopy = true; break; default: exit(1); } } if (!bind_addr) bind_addr = cfg_family == PF_INET6 ? "::" : "0.0.0.0"; setup_sockaddr(cfg_family, bind_addr, &cfg_dst_addr); if (optind != argc) usage(argv[0]); if (cfg_family == PF_UNSPEC) error(1, 0, "must pass one of -4 or -6"); if (cfg_tcp && !cfg_connected) error(1, 0, "connectionless tcp makes no sense"); if (cfg_segment && cfg_sendmmsg) error(1, 0, "cannot combine segment offload and sendmmsg"); if (cfg_tx_tstamp && !(cfg_segment || cfg_sendmmsg)) error(1, 0, "Options -T and -H require either -S or -m option"); if (cfg_family == PF_INET) hdrlen = sizeof(struct iphdr) + sizeof(struct udphdr); else hdrlen = sizeof(struct ip6_hdr) + sizeof(struct udphdr); cfg_mss = ETH_DATA_LEN - hdrlen; max_len = ETH_MAX_MTU - hdrlen; if (!cfg_gso_size) cfg_gso_size = cfg_mss; if (cfg_payload_len > max_len) error(1, 0, "payload length %u exceeds max %u", cfg_payload_len, max_len); } static void set_pmtu_discover(int fd, bool is_ipv4) { int level, name, val; if (is_ipv4) { level = SOL_IP; name = IP_MTU_DISCOVER; val = IP_PMTUDISC_DO; } else { level = SOL_IPV6; name = IPV6_MTU_DISCOVER; val = IPV6_PMTUDISC_DO; } if (setsockopt(fd, level, name, &val, sizeof(val))) error(1, errno, "setsockopt path mtu"); } static void set_tx_timestamping(int fd) { int val = SOF_TIMESTAMPING_OPT_CMSG | SOF_TIMESTAMPING_OPT_ID | SOF_TIMESTAMPING_OPT_TSONLY; if (cfg_tx_ts == SOF_TIMESTAMPING_TX_SOFTWARE) val |= SOF_TIMESTAMPING_SOFTWARE; else val |= SOF_TIMESTAMPING_RAW_HARDWARE; if (setsockopt(fd, SOL_SOCKET, SO_TIMESTAMPING, &val, sizeof(val))) error(1, errno, "setsockopt tx timestamping"); } static void print_audit_report(unsigned long num_msgs, unsigned long num_sends) { unsigned long tdelta; tdelta = tend - tstart; if (!tdelta) return; fprintf(stderr, "Summary over %lu.%03lu seconds...\n", tdelta / 1000, tdelta % 1000); fprintf(stderr, "sum %s tx: %6lu MB/s %10lu calls (%lu/s) %10lu msgs (%lu/s)\n", cfg_tcp ? "tcp" : "udp", ((num_msgs * cfg_payload_len) >> 10) / tdelta, num_sends, num_sends * 1000 / tdelta, num_msgs, num_msgs * 1000 / tdelta); if (cfg_tx_tstamp) { if (stat_tx_ts_errors) error(1, 0, "Expected clean TX Timestamps: %9lu msgs received %6lu errors", stat_tx_ts, stat_tx_ts_errors); if (stat_tx_ts != num_sends) error(1, 0, "Unexpected number of TX Timestamps: %9lu expected %9lu received", num_sends, stat_tx_ts); fprintf(stderr, "Tx Timestamps: %19lu received %17lu errors\n", stat_tx_ts, stat_tx_ts_errors); } if (cfg_zerocopy) { if (stat_zcopies != num_sends) error(1, 0, "Unexpected number of Zerocopy completions: %9lu expected %9lu received", num_sends, stat_zcopies); fprintf(stderr, "Zerocopy acks: %19lu\n", stat_zcopies); } } static void print_report(unsigned long num_msgs, unsigned long num_sends) { fprintf(stderr, "%s tx: %6lu MB/s %8lu calls/s %6lu msg/s\n", cfg_tcp ? "tcp" : "udp", (num_msgs * cfg_payload_len) >> 20, num_sends, num_msgs); if (cfg_audit) { total_num_msgs += num_msgs; total_num_sends += num_sends; } } int main(int argc, char **argv) { unsigned long num_msgs, num_sends; unsigned long tnow, treport, tstop; int fd, i, val, ret; parse_opts(argc, argv); if (cfg_cpu > 0) set_cpu(cfg_cpu); for (i = 0; i < sizeof(buf[0]); i++) buf[0][i] = 'a' + (i % 26); for (i = 1; i < NUM_PKT; i++) memcpy(buf[i], buf[0], sizeof(buf[0])); signal(SIGINT, sigint_handler); fd = socket(cfg_family, cfg_tcp ? SOCK_STREAM : SOCK_DGRAM, 0); if (fd == -1) error(1, errno, "socket"); if (cfg_zerocopy) { val = 1; ret = setsockopt(fd, SOL_SOCKET, SO_ZEROCOPY, &val, sizeof(val)); if (ret) { if (errno == ENOPROTOOPT || errno == ENOTSUPP) { fprintf(stderr, "SO_ZEROCOPY not supported"); exit(KSFT_SKIP); } error(1, errno, "setsockopt zerocopy"); } } if (cfg_connected && connect(fd, (void *)&cfg_dst_addr, cfg_alen)) error(1, errno, "connect"); if (cfg_segment) set_pmtu_discover(fd, cfg_family == PF_INET); if (cfg_tx_tstamp) set_tx_timestamping(fd); num_msgs = num_sends = 0; tnow = gettimeofday_ms(); tstart = tnow; tend = tnow; tstop = tnow + cfg_runtime_ms; treport = tnow + 1000; i = 0; do { if (cfg_tcp) num_sends += send_tcp(fd, buf[i]); else if (cfg_segment) num_sends += send_udp_segment(fd, buf[i]); else if (cfg_sendmmsg) num_sends += send_udp_sendmmsg(fd, buf[i]); else num_sends += send_udp(fd, buf[i]); num_msgs++; if ((cfg_zerocopy && ((num_msgs & 0xF) == 0)) || cfg_tx_tstamp) flush_errqueue(fd, cfg_poll, 500, true); if (cfg_msg_nr && num_msgs >= cfg_msg_nr) break; tnow = gettimeofday_ms(); if (tnow >= treport) { print_report(num_msgs, num_sends); num_msgs = num_sends = 0; treport = tnow + 1000; } /* cold cache when writing buffer */ if (cfg_cache_trash) i = ++i < NUM_PKT ? i : 0; } while (!interrupted && (cfg_runtime_ms == -1 || tnow < tstop)); if (cfg_zerocopy || cfg_tx_tstamp) flush_errqueue_retry(fd, num_sends); if (close(fd)) error(1, errno, "close"); if (cfg_audit) { tend = tnow; total_num_msgs += num_msgs; total_num_sends += num_sends; print_audit_report(total_num_msgs, total_num_sends); } return 0; } |