1 /* SPDX-License-Identifier: BSD-3-Clause 2 * Copyright(c) 2010-2016 Intel Corporation 3 */ 4 5 #include <stdio.h> 6 #include <stdlib.h> 7 #include <string.h> 8 #include <stdint.h> 9 #include <inttypes.h> 10 #include <sys/types.h> 11 #include <sys/queue.h> 12 #include <setjmp.h> 13 #include <stdarg.h> 14 #include <ctype.h> 15 #include <errno.h> 16 #include <getopt.h> 17 #include <signal.h> 18 #include <stdbool.h> 19 20 #include <rte_common.h> 21 #include <rte_log.h> 22 #include <rte_malloc.h> 23 #include <rte_memory.h> 24 #include <rte_memcpy.h> 25 #include <rte_eal.h> 26 #include <rte_launch.h> 27 #include <rte_atomic.h> 28 #include <rte_cycles.h> 29 #include <rte_prefetch.h> 30 #include <rte_lcore.h> 31 #include <rte_per_lcore.h> 32 #include <rte_branch_prediction.h> 33 #include <rte_interrupts.h> 34 #include <rte_random.h> 35 #include <rte_debug.h> 36 #include <rte_ether.h> 37 #include <rte_ethdev.h> 38 #include <rte_mempool.h> 39 #include <rte_mbuf.h> 40 #include <rte_string_fns.h> 41 42 static volatile bool force_quit; 43 44 /* MAC updating enabled by default */ 45 static int mac_updating = 1; 46 47 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1 48 49 #define MAX_PKT_BURST 32 50 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ 51 #define MEMPOOL_CACHE_SIZE 256 52 53 /* 54 * Configurable number of RX/TX ring descriptors 55 */ 56 #define RTE_TEST_RX_DESC_DEFAULT 1024 57 #define RTE_TEST_TX_DESC_DEFAULT 1024 58 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT; 59 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; 60 61 /* ethernet addresses of ports */ 62 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS]; 63 64 /* mask of enabled ports */ 65 static uint32_t l2fwd_enabled_port_mask = 0; 66 67 /* list of enabled ports */ 68 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS]; 69 70 struct port_pair_params { 71 #define NUM_PORTS 2 72 uint16_t port[NUM_PORTS]; 73 } __rte_cache_aligned; 74 75 static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2]; 76 static struct port_pair_params *port_pair_params; 77 static uint16_t nb_port_pair_params; 78 79 static unsigned int l2fwd_rx_queue_per_lcore = 1; 80 81 #define MAX_RX_QUEUE_PER_LCORE 16 82 #define MAX_TX_QUEUE_PER_PORT 16 83 /* List of queues to be polled for a given lcore. 8< */ 84 struct lcore_queue_conf { 85 unsigned n_rx_port; 86 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; 87 } __rte_cache_aligned; 88 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; 89 /* >8 End of list of queues to be polled for a given lcore. */ 90 91 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS]; 92 93 static struct rte_eth_conf port_conf = { 94 .rxmode = { 95 .split_hdr_size = 0, 96 }, 97 .txmode = { 98 .mq_mode = ETH_MQ_TX_NONE, 99 }, 100 }; 101 102 struct rte_mempool * l2fwd_pktmbuf_pool = NULL; 103 104 /* Per-port statistics struct */ 105 struct l2fwd_port_statistics { 106 uint64_t tx; 107 uint64_t rx; 108 uint64_t dropped; 109 } __rte_cache_aligned; 110 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS]; 111 112 #define MAX_TIMER_PERIOD 86400 /* 1 day max */ 113 /* A tsc-based timer responsible for triggering statistics printout */ 114 static uint64_t timer_period = 10; /* default period is 10 seconds */ 115 116 /* Print out statistics on packets dropped */ 117 static void 118 print_stats(void) 119 { 120 uint64_t total_packets_dropped, total_packets_tx, total_packets_rx; 121 unsigned portid; 122 123 total_packets_dropped = 0; 124 total_packets_tx = 0; 125 total_packets_rx = 0; 126 127 const char clr[] = { 27, '[', '2', 'J', '\0' }; 128 const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' }; 129 130 /* Clear screen and move to top left */ 131 printf("%s%s", clr, topLeft); 132 133 printf("\nPort statistics ===================================="); 134 135 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { 136 /* skip disabled ports */ 137 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 138 continue; 139 printf("\nStatistics for port %u ------------------------------" 140 "\nPackets sent: %24"PRIu64 141 "\nPackets received: %20"PRIu64 142 "\nPackets dropped: %21"PRIu64, 143 portid, 144 port_statistics[portid].tx, 145 port_statistics[portid].rx, 146 port_statistics[portid].dropped); 147 148 total_packets_dropped += port_statistics[portid].dropped; 149 total_packets_tx += port_statistics[portid].tx; 150 total_packets_rx += port_statistics[portid].rx; 151 } 152 printf("\nAggregate statistics ===============================" 153 "\nTotal packets sent: %18"PRIu64 154 "\nTotal packets received: %14"PRIu64 155 "\nTotal packets dropped: %15"PRIu64, 156 total_packets_tx, 157 total_packets_rx, 158 total_packets_dropped); 159 printf("\n====================================================\n"); 160 161 fflush(stdout); 162 } 163 164 static void 165 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid) 166 { 167 struct rte_ether_hdr *eth; 168 void *tmp; 169 170 eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 171 172 /* 02:00:00:00:00:xx */ 173 tmp = ð->d_addr.addr_bytes[0]; 174 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40); 175 176 /* src addr */ 177 rte_ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], ð->s_addr); 178 } 179 180 /* Simple forward. 8< */ 181 static void 182 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid) 183 { 184 unsigned dst_port; 185 int sent; 186 struct rte_eth_dev_tx_buffer *buffer; 187 188 dst_port = l2fwd_dst_ports[portid]; 189 190 if (mac_updating) 191 l2fwd_mac_updating(m, dst_port); 192 193 buffer = tx_buffer[dst_port]; 194 sent = rte_eth_tx_buffer(dst_port, 0, buffer, m); 195 if (sent) 196 port_statistics[dst_port].tx += sent; 197 } 198 /* >8 End of simple forward. */ 199 200 /* main processing loop */ 201 static void 202 l2fwd_main_loop(void) 203 { 204 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 205 struct rte_mbuf *m; 206 int sent; 207 unsigned lcore_id; 208 uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc; 209 unsigned i, j, portid, nb_rx; 210 struct lcore_queue_conf *qconf; 211 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * 212 BURST_TX_DRAIN_US; 213 struct rte_eth_dev_tx_buffer *buffer; 214 215 prev_tsc = 0; 216 timer_tsc = 0; 217 218 lcore_id = rte_lcore_id(); 219 qconf = &lcore_queue_conf[lcore_id]; 220 221 if (qconf->n_rx_port == 0) { 222 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id); 223 return; 224 } 225 226 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id); 227 228 for (i = 0; i < qconf->n_rx_port; i++) { 229 230 portid = qconf->rx_port_list[i]; 231 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id, 232 portid); 233 234 } 235 236 while (!force_quit) { 237 238 /* Drains TX queue in its main loop. 8< */ 239 cur_tsc = rte_rdtsc(); 240 241 /* 242 * TX burst queue drain 243 */ 244 diff_tsc = cur_tsc - prev_tsc; 245 if (unlikely(diff_tsc > drain_tsc)) { 246 247 for (i = 0; i < qconf->n_rx_port; i++) { 248 249 portid = l2fwd_dst_ports[qconf->rx_port_list[i]]; 250 buffer = tx_buffer[portid]; 251 252 sent = rte_eth_tx_buffer_flush(portid, 0, buffer); 253 if (sent) 254 port_statistics[portid].tx += sent; 255 256 } 257 258 /* if timer is enabled */ 259 if (timer_period > 0) { 260 261 /* advance the timer */ 262 timer_tsc += diff_tsc; 263 264 /* if timer has reached its timeout */ 265 if (unlikely(timer_tsc >= timer_period)) { 266 267 /* do this only on main core */ 268 if (lcore_id == rte_get_main_lcore()) { 269 print_stats(); 270 /* reset the timer */ 271 timer_tsc = 0; 272 } 273 } 274 } 275 276 prev_tsc = cur_tsc; 277 } 278 /* >8 End of draining TX queue. */ 279 280 /* Read packet from RX queues. 8< */ 281 for (i = 0; i < qconf->n_rx_port; i++) { 282 283 portid = qconf->rx_port_list[i]; 284 nb_rx = rte_eth_rx_burst(portid, 0, 285 pkts_burst, MAX_PKT_BURST); 286 287 port_statistics[portid].rx += nb_rx; 288 289 for (j = 0; j < nb_rx; j++) { 290 m = pkts_burst[j]; 291 rte_prefetch0(rte_pktmbuf_mtod(m, void *)); 292 l2fwd_simple_forward(m, portid); 293 } 294 } 295 /* >8 End of read packet from RX queues. */ 296 } 297 } 298 299 static int 300 l2fwd_launch_one_lcore(__rte_unused void *dummy) 301 { 302 l2fwd_main_loop(); 303 return 0; 304 } 305 306 /* display usage */ 307 static void 308 l2fwd_usage(const char *prgname) 309 { 310 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n" 311 " -p PORTMASK: hexadecimal bitmask of ports to configure\n" 312 " -q NQ: number of queue (=ports) per lcore (default is 1)\n" 313 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n" 314 " --no-mac-updating: Disable MAC addresses updating (enabled by default)\n" 315 " When enabled:\n" 316 " - The source MAC address is replaced by the TX port MAC address\n" 317 " - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n" 318 " --portmap: Configure forwarding port pair mapping\n" 319 " Default: alternate port pairs\n\n", 320 prgname); 321 } 322 323 static int 324 l2fwd_parse_portmask(const char *portmask) 325 { 326 char *end = NULL; 327 unsigned long pm; 328 329 /* parse hexadecimal string */ 330 pm = strtoul(portmask, &end, 16); 331 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 332 return 0; 333 334 return pm; 335 } 336 337 static int 338 l2fwd_parse_port_pair_config(const char *q_arg) 339 { 340 enum fieldnames { 341 FLD_PORT1 = 0, 342 FLD_PORT2, 343 _NUM_FLD 344 }; 345 unsigned long int_fld[_NUM_FLD]; 346 const char *p, *p0 = q_arg; 347 char *str_fld[_NUM_FLD]; 348 unsigned int size; 349 char s[256]; 350 char *end; 351 int i; 352 353 nb_port_pair_params = 0; 354 355 while ((p = strchr(p0, '(')) != NULL) { 356 ++p; 357 p0 = strchr(p, ')'); 358 if (p0 == NULL) 359 return -1; 360 361 size = p0 - p; 362 if (size >= sizeof(s)) 363 return -1; 364 365 memcpy(s, p, size); 366 s[size] = '\0'; 367 if (rte_strsplit(s, sizeof(s), str_fld, 368 _NUM_FLD, ',') != _NUM_FLD) 369 return -1; 370 for (i = 0; i < _NUM_FLD; i++) { 371 errno = 0; 372 int_fld[i] = strtoul(str_fld[i], &end, 0); 373 if (errno != 0 || end == str_fld[i] || 374 int_fld[i] >= RTE_MAX_ETHPORTS) 375 return -1; 376 } 377 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) { 378 printf("exceeded max number of port pair params: %hu\n", 379 nb_port_pair_params); 380 return -1; 381 } 382 port_pair_params_array[nb_port_pair_params].port[0] = 383 (uint16_t)int_fld[FLD_PORT1]; 384 port_pair_params_array[nb_port_pair_params].port[1] = 385 (uint16_t)int_fld[FLD_PORT2]; 386 ++nb_port_pair_params; 387 } 388 port_pair_params = port_pair_params_array; 389 return 0; 390 } 391 392 static unsigned int 393 l2fwd_parse_nqueue(const char *q_arg) 394 { 395 char *end = NULL; 396 unsigned long n; 397 398 /* parse hexadecimal string */ 399 n = strtoul(q_arg, &end, 10); 400 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 401 return 0; 402 if (n == 0) 403 return 0; 404 if (n >= MAX_RX_QUEUE_PER_LCORE) 405 return 0; 406 407 return n; 408 } 409 410 static int 411 l2fwd_parse_timer_period(const char *q_arg) 412 { 413 char *end = NULL; 414 int n; 415 416 /* parse number string */ 417 n = strtol(q_arg, &end, 10); 418 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 419 return -1; 420 if (n >= MAX_TIMER_PERIOD) 421 return -1; 422 423 return n; 424 } 425 426 static const char short_options[] = 427 "p:" /* portmask */ 428 "q:" /* number of queues */ 429 "T:" /* timer period */ 430 ; 431 432 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating" 433 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap" 434 435 enum { 436 /* long options mapped to a short option */ 437 438 /* first long only option value must be >= 256, so that we won't 439 * conflict with short options */ 440 CMD_LINE_OPT_NO_MAC_UPDATING_NUM = 256, 441 CMD_LINE_OPT_PORTMAP_NUM, 442 }; 443 444 static const struct option lgopts[] = { 445 { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0, 446 CMD_LINE_OPT_NO_MAC_UPDATING_NUM}, 447 { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM}, 448 {NULL, 0, 0, 0} 449 }; 450 451 /* Parse the argument given in the command line of the application */ 452 static int 453 l2fwd_parse_args(int argc, char **argv) 454 { 455 int opt, ret, timer_secs; 456 char **argvopt; 457 int option_index; 458 char *prgname = argv[0]; 459 460 argvopt = argv; 461 port_pair_params = NULL; 462 463 while ((opt = getopt_long(argc, argvopt, short_options, 464 lgopts, &option_index)) != EOF) { 465 466 switch (opt) { 467 /* portmask */ 468 case 'p': 469 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg); 470 if (l2fwd_enabled_port_mask == 0) { 471 printf("invalid portmask\n"); 472 l2fwd_usage(prgname); 473 return -1; 474 } 475 break; 476 477 /* nqueue */ 478 case 'q': 479 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg); 480 if (l2fwd_rx_queue_per_lcore == 0) { 481 printf("invalid queue number\n"); 482 l2fwd_usage(prgname); 483 return -1; 484 } 485 break; 486 487 /* timer period */ 488 case 'T': 489 timer_secs = l2fwd_parse_timer_period(optarg); 490 if (timer_secs < 0) { 491 printf("invalid timer period\n"); 492 l2fwd_usage(prgname); 493 return -1; 494 } 495 timer_period = timer_secs; 496 break; 497 498 /* long options */ 499 case CMD_LINE_OPT_PORTMAP_NUM: 500 ret = l2fwd_parse_port_pair_config(optarg); 501 if (ret) { 502 fprintf(stderr, "Invalid config\n"); 503 l2fwd_usage(prgname); 504 return -1; 505 } 506 break; 507 508 case CMD_LINE_OPT_NO_MAC_UPDATING_NUM: 509 mac_updating = 0; 510 break; 511 512 default: 513 l2fwd_usage(prgname); 514 return -1; 515 } 516 } 517 518 if (optind >= 0) 519 argv[optind-1] = prgname; 520 521 ret = optind-1; 522 optind = 1; /* reset getopt lib */ 523 return ret; 524 } 525 526 /* 527 * Check port pair config with enabled port mask, 528 * and for valid port pair combinations. 529 */ 530 static int 531 check_port_pair_config(void) 532 { 533 uint32_t port_pair_config_mask = 0; 534 uint32_t port_pair_mask = 0; 535 uint16_t index, i, portid; 536 537 for (index = 0; index < nb_port_pair_params; index++) { 538 port_pair_mask = 0; 539 540 for (i = 0; i < NUM_PORTS; i++) { 541 portid = port_pair_params[index].port[i]; 542 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 543 printf("port %u is not enabled in port mask\n", 544 portid); 545 return -1; 546 } 547 if (!rte_eth_dev_is_valid_port(portid)) { 548 printf("port %u is not present on the board\n", 549 portid); 550 return -1; 551 } 552 553 port_pair_mask |= 1 << portid; 554 } 555 556 if (port_pair_config_mask & port_pair_mask) { 557 printf("port %u is used in other port pairs\n", portid); 558 return -1; 559 } 560 port_pair_config_mask |= port_pair_mask; 561 } 562 563 l2fwd_enabled_port_mask &= port_pair_config_mask; 564 565 return 0; 566 } 567 568 /* Check the link status of all ports in up to 9s, and print them finally */ 569 static void 570 check_all_ports_link_status(uint32_t port_mask) 571 { 572 #define CHECK_INTERVAL 100 /* 100ms */ 573 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 574 uint16_t portid; 575 uint8_t count, all_ports_up, print_flag = 0; 576 struct rte_eth_link link; 577 int ret; 578 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 579 580 printf("\nChecking link status"); 581 fflush(stdout); 582 for (count = 0; count <= MAX_CHECK_TIME; count++) { 583 if (force_quit) 584 return; 585 all_ports_up = 1; 586 RTE_ETH_FOREACH_DEV(portid) { 587 if (force_quit) 588 return; 589 if ((port_mask & (1 << portid)) == 0) 590 continue; 591 memset(&link, 0, sizeof(link)); 592 ret = rte_eth_link_get_nowait(portid, &link); 593 if (ret < 0) { 594 all_ports_up = 0; 595 if (print_flag == 1) 596 printf("Port %u link get failed: %s\n", 597 portid, rte_strerror(-ret)); 598 continue; 599 } 600 /* print link status if flag set */ 601 if (print_flag == 1) { 602 rte_eth_link_to_str(link_status_text, 603 sizeof(link_status_text), &link); 604 printf("Port %d %s\n", portid, 605 link_status_text); 606 continue; 607 } 608 /* clear all_ports_up flag if any link down */ 609 if (link.link_status == ETH_LINK_DOWN) { 610 all_ports_up = 0; 611 break; 612 } 613 } 614 /* after finally printing all link status, get out */ 615 if (print_flag == 1) 616 break; 617 618 if (all_ports_up == 0) { 619 printf("."); 620 fflush(stdout); 621 rte_delay_ms(CHECK_INTERVAL); 622 } 623 624 /* set the print_flag if all ports up or timeout */ 625 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 626 print_flag = 1; 627 printf("done\n"); 628 } 629 } 630 } 631 632 static void 633 signal_handler(int signum) 634 { 635 if (signum == SIGINT || signum == SIGTERM) { 636 printf("\n\nSignal %d received, preparing to exit...\n", 637 signum); 638 force_quit = true; 639 } 640 } 641 642 int 643 main(int argc, char **argv) 644 { 645 struct lcore_queue_conf *qconf; 646 int ret; 647 uint16_t nb_ports; 648 uint16_t nb_ports_available = 0; 649 uint16_t portid, last_port; 650 unsigned lcore_id, rx_lcore_id; 651 unsigned nb_ports_in_mask = 0; 652 unsigned int nb_lcores = 0; 653 unsigned int nb_mbufs; 654 655 /* Init EAL. 8< */ 656 ret = rte_eal_init(argc, argv); 657 if (ret < 0) 658 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); 659 argc -= ret; 660 argv += ret; 661 662 force_quit = false; 663 signal(SIGINT, signal_handler); 664 signal(SIGTERM, signal_handler); 665 666 /* parse application arguments (after the EAL ones) */ 667 ret = l2fwd_parse_args(argc, argv); 668 if (ret < 0) 669 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); 670 /* >8 End of init EAL. */ 671 672 printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled"); 673 674 /* convert to number of cycles */ 675 timer_period *= rte_get_timer_hz(); 676 677 nb_ports = rte_eth_dev_count_avail(); 678 if (nb_ports == 0) 679 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); 680 681 if (port_pair_params != NULL) { 682 if (check_port_pair_config() < 0) 683 rte_exit(EXIT_FAILURE, "Invalid port pair config\n"); 684 } 685 686 /* check port mask to possible port mask */ 687 if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1)) 688 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n", 689 (1 << nb_ports) - 1); 690 691 /* Initialization of the driver. 8< */ 692 693 /* reset l2fwd_dst_ports */ 694 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) 695 l2fwd_dst_ports[portid] = 0; 696 last_port = 0; 697 698 /* populate destination port details */ 699 if (port_pair_params != NULL) { 700 uint16_t idx, p; 701 702 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) { 703 p = idx & 1; 704 portid = port_pair_params[idx >> 1].port[p]; 705 l2fwd_dst_ports[portid] = 706 port_pair_params[idx >> 1].port[p ^ 1]; 707 } 708 } else { 709 RTE_ETH_FOREACH_DEV(portid) { 710 /* skip ports that are not enabled */ 711 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 712 continue; 713 714 if (nb_ports_in_mask % 2) { 715 l2fwd_dst_ports[portid] = last_port; 716 l2fwd_dst_ports[last_port] = portid; 717 } else { 718 last_port = portid; 719 } 720 721 nb_ports_in_mask++; 722 } 723 if (nb_ports_in_mask % 2) { 724 printf("Notice: odd number of ports in portmask.\n"); 725 l2fwd_dst_ports[last_port] = last_port; 726 } 727 } 728 /* >8 End of initialization of the driver. */ 729 730 rx_lcore_id = 0; 731 qconf = NULL; 732 733 /* Initialize the port/queue configuration of each logical core */ 734 RTE_ETH_FOREACH_DEV(portid) { 735 /* skip ports that are not enabled */ 736 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 737 continue; 738 739 /* get the lcore_id for this port */ 740 while (rte_lcore_is_enabled(rx_lcore_id) == 0 || 741 lcore_queue_conf[rx_lcore_id].n_rx_port == 742 l2fwd_rx_queue_per_lcore) { 743 rx_lcore_id++; 744 if (rx_lcore_id >= RTE_MAX_LCORE) 745 rte_exit(EXIT_FAILURE, "Not enough cores\n"); 746 } 747 748 if (qconf != &lcore_queue_conf[rx_lcore_id]) { 749 /* Assigned a new logical core in the loop above. */ 750 qconf = &lcore_queue_conf[rx_lcore_id]; 751 nb_lcores++; 752 } 753 754 qconf->rx_port_list[qconf->n_rx_port] = portid; 755 qconf->n_rx_port++; 756 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id, 757 portid, l2fwd_dst_ports[portid]); 758 } 759 760 nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST + 761 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U); 762 763 /* Create the mbuf pool. 8< */ 764 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs, 765 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, 766 rte_socket_id()); 767 if (l2fwd_pktmbuf_pool == NULL) 768 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); 769 /* >8 End of create the mbuf pool. */ 770 771 /* Initialise each port */ 772 RTE_ETH_FOREACH_DEV(portid) { 773 struct rte_eth_rxconf rxq_conf; 774 struct rte_eth_txconf txq_conf; 775 struct rte_eth_conf local_port_conf = port_conf; 776 struct rte_eth_dev_info dev_info; 777 778 /* skip ports that are not enabled */ 779 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 780 printf("Skipping disabled port %u\n", portid); 781 continue; 782 } 783 nb_ports_available++; 784 785 /* init port */ 786 printf("Initializing port %u... ", portid); 787 fflush(stdout); 788 789 ret = rte_eth_dev_info_get(portid, &dev_info); 790 if (ret != 0) 791 rte_exit(EXIT_FAILURE, 792 "Error during getting device (port %u) info: %s\n", 793 portid, strerror(-ret)); 794 795 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE) 796 local_port_conf.txmode.offloads |= 797 DEV_TX_OFFLOAD_MBUF_FAST_FREE; 798 /* Configure the number of queues for a port. */ 799 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf); 800 if (ret < 0) 801 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", 802 ret, portid); 803 /* >8 End of configuration of the number of queues for a port. */ 804 805 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd, 806 &nb_txd); 807 if (ret < 0) 808 rte_exit(EXIT_FAILURE, 809 "Cannot adjust number of descriptors: err=%d, port=%u\n", 810 ret, portid); 811 812 ret = rte_eth_macaddr_get(portid, 813 &l2fwd_ports_eth_addr[portid]); 814 if (ret < 0) 815 rte_exit(EXIT_FAILURE, 816 "Cannot get MAC address: err=%d, port=%u\n", 817 ret, portid); 818 819 /* init one RX queue */ 820 fflush(stdout); 821 rxq_conf = dev_info.default_rxconf; 822 rxq_conf.offloads = local_port_conf.rxmode.offloads; 823 /* RX queue setup. 8< */ 824 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, 825 rte_eth_dev_socket_id(portid), 826 &rxq_conf, 827 l2fwd_pktmbuf_pool); 828 if (ret < 0) 829 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", 830 ret, portid); 831 /* >8 End of RX queue setup. */ 832 833 /* Init one TX queue on each port. 8< */ 834 fflush(stdout); 835 txq_conf = dev_info.default_txconf; 836 txq_conf.offloads = local_port_conf.txmode.offloads; 837 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, 838 rte_eth_dev_socket_id(portid), 839 &txq_conf); 840 if (ret < 0) 841 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", 842 ret, portid); 843 /* >8 End of init one TX queue on each port. */ 844 845 /* Initialize TX buffers */ 846 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer", 847 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0, 848 rte_eth_dev_socket_id(portid)); 849 if (tx_buffer[portid] == NULL) 850 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n", 851 portid); 852 853 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST); 854 855 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], 856 rte_eth_tx_buffer_count_callback, 857 &port_statistics[portid].dropped); 858 if (ret < 0) 859 rte_exit(EXIT_FAILURE, 860 "Cannot set error callback for tx buffer on port %u\n", 861 portid); 862 863 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL, 864 0); 865 if (ret < 0) 866 printf("Port %u, Failed to disable Ptype parsing\n", 867 portid); 868 /* Start device */ 869 ret = rte_eth_dev_start(portid); 870 if (ret < 0) 871 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", 872 ret, portid); 873 874 printf("done: \n"); 875 876 ret = rte_eth_promiscuous_enable(portid); 877 if (ret != 0) 878 rte_exit(EXIT_FAILURE, 879 "rte_eth_promiscuous_enable:err=%s, port=%u\n", 880 rte_strerror(-ret), portid); 881 882 printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n", 883 portid, 884 RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid])); 885 886 /* initialize port stats */ 887 memset(&port_statistics, 0, sizeof(port_statistics)); 888 } 889 890 if (!nb_ports_available) { 891 rte_exit(EXIT_FAILURE, 892 "All available ports are disabled. Please set portmask.\n"); 893 } 894 895 check_all_ports_link_status(l2fwd_enabled_port_mask); 896 897 ret = 0; 898 /* launch per-lcore init on every lcore */ 899 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN); 900 RTE_LCORE_FOREACH_WORKER(lcore_id) { 901 if (rte_eal_wait_lcore(lcore_id) < 0) { 902 ret = -1; 903 break; 904 } 905 } 906 907 RTE_ETH_FOREACH_DEV(portid) { 908 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 909 continue; 910 printf("Closing port %d...", portid); 911 ret = rte_eth_dev_stop(portid); 912 if (ret != 0) 913 printf("rte_eth_dev_stop: err=%d, port=%d\n", 914 ret, portid); 915 rte_eth_dev_close(portid); 916 printf(" Done\n"); 917 } 918 919 /* clean up the EAL */ 920 rte_eal_cleanup(); 921 printf("Bye...\n"); 922 923 return ret; 924 } 925