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_cycles.h> 28 #include <rte_prefetch.h> 29 #include <rte_lcore.h> 30 #include <rte_per_lcore.h> 31 #include <rte_branch_prediction.h> 32 #include <rte_interrupts.h> 33 #include <rte_random.h> 34 #include <rte_debug.h> 35 #include <rte_ether.h> 36 #include <rte_ethdev.h> 37 #include <rte_mempool.h> 38 #include <rte_mbuf.h> 39 #include <rte_string_fns.h> 40 41 static volatile bool force_quit; 42 43 /* MAC updating enabled by default */ 44 static int mac_updating = 1; 45 46 /* Ports set in promiscuous mode off by default. */ 47 static int promiscuous_on; 48 49 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1 50 51 #define MAX_PKT_BURST 32 52 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ 53 #define MEMPOOL_CACHE_SIZE 256 54 55 /* 56 * Configurable number of RX/TX ring descriptors 57 */ 58 #define RX_DESC_DEFAULT 1024 59 #define TX_DESC_DEFAULT 1024 60 static uint16_t nb_rxd = RX_DESC_DEFAULT; 61 static uint16_t nb_txd = TX_DESC_DEFAULT; 62 63 /* ethernet addresses of ports */ 64 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS]; 65 66 /* mask of enabled ports */ 67 static uint32_t l2fwd_enabled_port_mask = 0; 68 69 /* list of enabled ports */ 70 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS]; 71 72 struct __rte_cache_aligned port_pair_params { 73 #define NUM_PORTS 2 74 uint16_t port[NUM_PORTS]; 75 }; 76 77 static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2]; 78 static struct port_pair_params *port_pair_params; 79 static uint16_t nb_port_pair_params; 80 81 static unsigned int l2fwd_rx_queue_per_lcore = 1; 82 83 #define MAX_RX_QUEUE_PER_LCORE 16 84 #define MAX_TX_QUEUE_PER_PORT 16 85 /* List of queues to be polled for a given lcore. 8< */ 86 struct __rte_cache_aligned lcore_queue_conf { 87 unsigned n_rx_port; 88 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; 89 }; 90 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; 91 /* >8 End of list of queues to be polled for a given lcore. */ 92 93 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS]; 94 95 static struct rte_eth_conf port_conf = { 96 .txmode = { 97 .mq_mode = RTE_ETH_MQ_TX_NONE, 98 }, 99 }; 100 101 struct rte_mempool * l2fwd_pktmbuf_pool = NULL; 102 103 /* Per-port statistics struct */ 104 struct __rte_cache_aligned l2fwd_port_statistics { 105 uint64_t tx; 106 uint64_t rx; 107 uint64_t dropped; 108 }; 109 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS]; 110 111 #define MAX_TIMER_PERIOD 86400 /* 1 day max */ 112 /* A tsc-based timer responsible for triggering statistics printout */ 113 static uint64_t timer_period = 10; /* default period is 10 seconds */ 114 115 /* Print out statistics on packets dropped */ 116 static void 117 print_stats(void) 118 { 119 uint64_t total_packets_dropped, total_packets_tx, total_packets_rx; 120 unsigned portid; 121 122 total_packets_dropped = 0; 123 total_packets_tx = 0; 124 total_packets_rx = 0; 125 126 const char clr[] = { 27, '[', '2', 'J', '\0' }; 127 const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' }; 128 129 /* Clear screen and move to top left */ 130 printf("%s%s", clr, topLeft); 131 132 printf("\nPort statistics ===================================="); 133 134 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) { 135 /* skip disabled ports */ 136 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 137 continue; 138 printf("\nStatistics for port %u ------------------------------" 139 "\nPackets sent: %24"PRIu64 140 "\nPackets received: %20"PRIu64 141 "\nPackets dropped: %21"PRIu64, 142 portid, 143 port_statistics[portid].tx, 144 port_statistics[portid].rx, 145 port_statistics[portid].dropped); 146 147 total_packets_dropped += port_statistics[portid].dropped; 148 total_packets_tx += port_statistics[portid].tx; 149 total_packets_rx += port_statistics[portid].rx; 150 } 151 printf("\nAggregate statistics ===============================" 152 "\nTotal packets sent: %18"PRIu64 153 "\nTotal packets received: %14"PRIu64 154 "\nTotal packets dropped: %15"PRIu64, 155 total_packets_tx, 156 total_packets_rx, 157 total_packets_dropped); 158 printf("\n====================================================\n"); 159 160 fflush(stdout); 161 } 162 163 static void 164 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid) 165 { 166 struct rte_ether_hdr *eth; 167 void *tmp; 168 169 eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *); 170 171 /* 02:00:00:00:00:xx */ 172 tmp = ð->dst_addr.addr_bytes[0]; 173 *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40); 174 175 /* src addr */ 176 rte_ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], ð->src_addr); 177 } 178 179 /* Simple forward. 8< */ 180 static void 181 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid) 182 { 183 unsigned dst_port; 184 int sent; 185 struct rte_eth_dev_tx_buffer *buffer; 186 187 dst_port = l2fwd_dst_ports[portid]; 188 189 if (mac_updating) 190 l2fwd_mac_updating(m, dst_port); 191 192 buffer = tx_buffer[dst_port]; 193 sent = rte_eth_tx_buffer(dst_port, 0, buffer, m); 194 if (sent) 195 port_statistics[dst_port].tx += sent; 196 } 197 /* >8 End of simple forward. */ 198 199 /* main processing loop */ 200 static void 201 l2fwd_main_loop(void) 202 { 203 struct rte_mbuf *pkts_burst[MAX_PKT_BURST]; 204 struct rte_mbuf *m; 205 int sent; 206 unsigned lcore_id; 207 uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc; 208 unsigned i, j, portid, nb_rx; 209 struct lcore_queue_conf *qconf; 210 const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S * 211 BURST_TX_DRAIN_US; 212 struct rte_eth_dev_tx_buffer *buffer; 213 214 prev_tsc = 0; 215 timer_tsc = 0; 216 217 lcore_id = rte_lcore_id(); 218 qconf = &lcore_queue_conf[lcore_id]; 219 220 if (qconf->n_rx_port == 0) { 221 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id); 222 return; 223 } 224 225 RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id); 226 227 for (i = 0; i < qconf->n_rx_port; i++) { 228 229 portid = qconf->rx_port_list[i]; 230 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id, 231 portid); 232 233 } 234 235 while (!force_quit) { 236 237 /* Drains TX queue in its main loop. 8< */ 238 cur_tsc = rte_rdtsc(); 239 240 /* 241 * TX burst queue drain 242 */ 243 diff_tsc = cur_tsc - prev_tsc; 244 if (unlikely(diff_tsc > drain_tsc)) { 245 246 for (i = 0; i < qconf->n_rx_port; i++) { 247 248 portid = l2fwd_dst_ports[qconf->rx_port_list[i]]; 249 buffer = tx_buffer[portid]; 250 251 sent = rte_eth_tx_buffer_flush(portid, 0, buffer); 252 if (sent) 253 port_statistics[portid].tx += sent; 254 255 } 256 257 /* if timer is enabled */ 258 if (timer_period > 0) { 259 260 /* advance the timer */ 261 timer_tsc += diff_tsc; 262 263 /* if timer has reached its timeout */ 264 if (unlikely(timer_tsc >= timer_period)) { 265 266 /* do this only on main core */ 267 if (lcore_id == rte_get_main_lcore()) { 268 print_stats(); 269 /* reset the timer */ 270 timer_tsc = 0; 271 } 272 } 273 } 274 275 prev_tsc = cur_tsc; 276 } 277 /* >8 End of draining TX queue. */ 278 279 /* Read packet from RX queues. 8< */ 280 for (i = 0; i < qconf->n_rx_port; i++) { 281 282 portid = qconf->rx_port_list[i]; 283 nb_rx = rte_eth_rx_burst(portid, 0, 284 pkts_burst, MAX_PKT_BURST); 285 286 if (unlikely(nb_rx == 0)) 287 continue; 288 289 port_statistics[portid].rx += nb_rx; 290 291 for (j = 0; j < nb_rx; j++) { 292 m = pkts_burst[j]; 293 rte_prefetch0(rte_pktmbuf_mtod(m, void *)); 294 l2fwd_simple_forward(m, portid); 295 } 296 } 297 /* >8 End of read packet from RX queues. */ 298 } 299 } 300 301 static int 302 l2fwd_launch_one_lcore(__rte_unused void *dummy) 303 { 304 l2fwd_main_loop(); 305 return 0; 306 } 307 308 /* display usage */ 309 static void 310 l2fwd_usage(const char *prgname) 311 { 312 printf("%s [EAL options] -- -p PORTMASK [-P] [-q NQ]\n" 313 " -p PORTMASK: hexadecimal bitmask of ports to configure\n" 314 " -P : Enable promiscuous mode\n" 315 " -q NQ: number of queue (=ports) per lcore (default is 1)\n" 316 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n" 317 " --no-mac-updating: Disable MAC addresses updating (enabled by default)\n" 318 " When enabled:\n" 319 " - The source MAC address is replaced by the TX port MAC address\n" 320 " - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n" 321 " --portmap: Configure forwarding port pair mapping\n" 322 " Default: alternate port pairs\n\n", 323 prgname); 324 } 325 326 static int 327 l2fwd_parse_portmask(const char *portmask) 328 { 329 char *end = NULL; 330 unsigned long pm; 331 332 /* parse hexadecimal string */ 333 pm = strtoul(portmask, &end, 16); 334 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 335 return 0; 336 337 return pm; 338 } 339 340 static int 341 l2fwd_parse_port_pair_config(const char *q_arg) 342 { 343 enum fieldnames { 344 FLD_PORT1 = 0, 345 FLD_PORT2, 346 _NUM_FLD 347 }; 348 unsigned long int_fld[_NUM_FLD]; 349 const char *p, *p0 = q_arg; 350 char *str_fld[_NUM_FLD]; 351 unsigned int size; 352 char s[256]; 353 char *end; 354 int i; 355 356 nb_port_pair_params = 0; 357 358 while ((p = strchr(p0, '(')) != NULL) { 359 ++p; 360 p0 = strchr(p, ')'); 361 if (p0 == NULL) 362 return -1; 363 364 size = p0 - p; 365 if (size >= sizeof(s)) 366 return -1; 367 368 memcpy(s, p, size); 369 s[size] = '\0'; 370 if (rte_strsplit(s, sizeof(s), str_fld, 371 _NUM_FLD, ',') != _NUM_FLD) 372 return -1; 373 for (i = 0; i < _NUM_FLD; i++) { 374 errno = 0; 375 int_fld[i] = strtoul(str_fld[i], &end, 0); 376 if (errno != 0 || end == str_fld[i] || 377 int_fld[i] >= RTE_MAX_ETHPORTS) 378 return -1; 379 } 380 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) { 381 printf("exceeded max number of port pair params: %hu\n", 382 nb_port_pair_params); 383 return -1; 384 } 385 port_pair_params_array[nb_port_pair_params].port[0] = 386 (uint16_t)int_fld[FLD_PORT1]; 387 port_pair_params_array[nb_port_pair_params].port[1] = 388 (uint16_t)int_fld[FLD_PORT2]; 389 ++nb_port_pair_params; 390 } 391 port_pair_params = port_pair_params_array; 392 return 0; 393 } 394 395 static unsigned int 396 l2fwd_parse_nqueue(const char *q_arg) 397 { 398 char *end = NULL; 399 unsigned long n; 400 401 /* parse hexadecimal string */ 402 n = strtoul(q_arg, &end, 10); 403 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 404 return 0; 405 if (n == 0) 406 return 0; 407 if (n >= MAX_RX_QUEUE_PER_LCORE) 408 return 0; 409 410 return n; 411 } 412 413 static int 414 l2fwd_parse_timer_period(const char *q_arg) 415 { 416 char *end = NULL; 417 int n; 418 419 /* parse number string */ 420 n = strtol(q_arg, &end, 10); 421 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 422 return -1; 423 if (n >= MAX_TIMER_PERIOD) 424 return -1; 425 426 return n; 427 } 428 429 static const char short_options[] = 430 "p:" /* portmask */ 431 "P" /* promiscuous */ 432 "q:" /* number of queues */ 433 "T:" /* timer period */ 434 ; 435 436 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating" 437 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap" 438 439 enum { 440 /* long options mapped to a short option */ 441 442 /* first long only option value must be >= 256, so that we won't 443 * conflict with short options */ 444 CMD_LINE_OPT_NO_MAC_UPDATING_NUM = 256, 445 CMD_LINE_OPT_PORTMAP_NUM, 446 }; 447 448 static const struct option lgopts[] = { 449 { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0, 450 CMD_LINE_OPT_NO_MAC_UPDATING_NUM}, 451 { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM}, 452 {NULL, 0, 0, 0} 453 }; 454 455 /* Parse the argument given in the command line of the application */ 456 static int 457 l2fwd_parse_args(int argc, char **argv) 458 { 459 int opt, ret, timer_secs; 460 char **argvopt; 461 int option_index; 462 char *prgname = argv[0]; 463 464 argvopt = argv; 465 port_pair_params = NULL; 466 467 while ((opt = getopt_long(argc, argvopt, short_options, 468 lgopts, &option_index)) != EOF) { 469 470 switch (opt) { 471 /* portmask */ 472 case 'p': 473 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg); 474 if (l2fwd_enabled_port_mask == 0) { 475 printf("invalid portmask\n"); 476 l2fwd_usage(prgname); 477 return -1; 478 } 479 break; 480 case 'P': 481 promiscuous_on = 1; 482 break; 483 484 /* nqueue */ 485 case 'q': 486 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg); 487 if (l2fwd_rx_queue_per_lcore == 0) { 488 printf("invalid queue number\n"); 489 l2fwd_usage(prgname); 490 return -1; 491 } 492 break; 493 494 /* timer period */ 495 case 'T': 496 timer_secs = l2fwd_parse_timer_period(optarg); 497 if (timer_secs < 0) { 498 printf("invalid timer period\n"); 499 l2fwd_usage(prgname); 500 return -1; 501 } 502 timer_period = timer_secs; 503 break; 504 505 /* long options */ 506 case CMD_LINE_OPT_PORTMAP_NUM: 507 ret = l2fwd_parse_port_pair_config(optarg); 508 if (ret) { 509 fprintf(stderr, "Invalid config\n"); 510 l2fwd_usage(prgname); 511 return -1; 512 } 513 break; 514 515 case CMD_LINE_OPT_NO_MAC_UPDATING_NUM: 516 mac_updating = 0; 517 break; 518 519 default: 520 l2fwd_usage(prgname); 521 return -1; 522 } 523 } 524 525 if (optind >= 0) 526 argv[optind-1] = prgname; 527 528 ret = optind-1; 529 optind = 1; /* reset getopt lib */ 530 return ret; 531 } 532 533 /* 534 * Check port pair config with enabled port mask, 535 * and for valid port pair combinations. 536 */ 537 static int 538 check_port_pair_config(void) 539 { 540 uint32_t port_pair_config_mask = 0; 541 uint32_t port_pair_mask = 0; 542 uint16_t index, i, portid; 543 544 for (index = 0; index < nb_port_pair_params; index++) { 545 port_pair_mask = 0; 546 547 for (i = 0; i < NUM_PORTS; i++) { 548 portid = port_pair_params[index].port[i]; 549 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 550 printf("port %u is not enabled in port mask\n", 551 portid); 552 return -1; 553 } 554 if (!rte_eth_dev_is_valid_port(portid)) { 555 printf("port %u is not present on the board\n", 556 portid); 557 return -1; 558 } 559 560 port_pair_mask |= 1 << portid; 561 } 562 563 if (port_pair_config_mask & port_pair_mask) { 564 printf("port %u is used in other port pairs\n", portid); 565 return -1; 566 } 567 port_pair_config_mask |= port_pair_mask; 568 } 569 570 l2fwd_enabled_port_mask &= port_pair_config_mask; 571 572 return 0; 573 } 574 575 /* Check the link status of all ports in up to 9s, and print them finally */ 576 static void 577 check_all_ports_link_status(uint32_t port_mask) 578 { 579 #define CHECK_INTERVAL 100 /* 100ms */ 580 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 581 uint16_t portid; 582 uint8_t count, all_ports_up, print_flag = 0; 583 struct rte_eth_link link; 584 int ret; 585 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 586 587 printf("\nChecking link status"); 588 fflush(stdout); 589 for (count = 0; count <= MAX_CHECK_TIME; count++) { 590 if (force_quit) 591 return; 592 all_ports_up = 1; 593 RTE_ETH_FOREACH_DEV(portid) { 594 if (force_quit) 595 return; 596 if ((port_mask & (1 << portid)) == 0) 597 continue; 598 memset(&link, 0, sizeof(link)); 599 ret = rte_eth_link_get_nowait(portid, &link); 600 if (ret < 0) { 601 all_ports_up = 0; 602 if (print_flag == 1) 603 printf("Port %u link get failed: %s\n", 604 portid, rte_strerror(-ret)); 605 continue; 606 } 607 /* print link status if flag set */ 608 if (print_flag == 1) { 609 rte_eth_link_to_str(link_status_text, 610 sizeof(link_status_text), &link); 611 printf("Port %d %s\n", portid, 612 link_status_text); 613 continue; 614 } 615 /* clear all_ports_up flag if any link down */ 616 if (link.link_status == RTE_ETH_LINK_DOWN) { 617 all_ports_up = 0; 618 break; 619 } 620 } 621 /* after finally printing all link status, get out */ 622 if (print_flag == 1) 623 break; 624 625 if (all_ports_up == 0) { 626 printf("."); 627 fflush(stdout); 628 rte_delay_ms(CHECK_INTERVAL); 629 } 630 631 /* set the print_flag if all ports up or timeout */ 632 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 633 print_flag = 1; 634 printf("done\n"); 635 } 636 } 637 } 638 639 static void 640 signal_handler(int signum) 641 { 642 if (signum == SIGINT || signum == SIGTERM) { 643 printf("\n\nSignal %d received, preparing to exit...\n", 644 signum); 645 force_quit = true; 646 } 647 } 648 649 int 650 main(int argc, char **argv) 651 { 652 struct lcore_queue_conf *qconf; 653 int ret; 654 uint16_t nb_ports; 655 uint16_t nb_ports_available = 0; 656 uint16_t portid, last_port; 657 unsigned lcore_id, rx_lcore_id; 658 unsigned nb_ports_in_mask = 0; 659 unsigned int nb_lcores = 0; 660 unsigned int nb_mbufs; 661 662 /* Init EAL. 8< */ 663 ret = rte_eal_init(argc, argv); 664 if (ret < 0) 665 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); 666 argc -= ret; 667 argv += ret; 668 669 force_quit = false; 670 signal(SIGINT, signal_handler); 671 signal(SIGTERM, signal_handler); 672 673 /* parse application arguments (after the EAL ones) */ 674 ret = l2fwd_parse_args(argc, argv); 675 if (ret < 0) 676 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); 677 /* >8 End of init EAL. */ 678 679 printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled"); 680 681 /* convert to number of cycles */ 682 timer_period *= rte_get_timer_hz(); 683 684 nb_ports = rte_eth_dev_count_avail(); 685 if (nb_ports == 0) 686 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); 687 688 if (port_pair_params != NULL) { 689 if (check_port_pair_config() < 0) 690 rte_exit(EXIT_FAILURE, "Invalid port pair config\n"); 691 } 692 693 /* check port mask to possible port mask */ 694 if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1)) 695 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n", 696 (1 << nb_ports) - 1); 697 698 /* Initialization of the driver. 8< */ 699 700 /* reset l2fwd_dst_ports */ 701 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) 702 l2fwd_dst_ports[portid] = 0; 703 last_port = 0; 704 705 /* populate destination port details */ 706 if (port_pair_params != NULL) { 707 uint16_t idx, p; 708 709 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) { 710 p = idx & 1; 711 portid = port_pair_params[idx >> 1].port[p]; 712 l2fwd_dst_ports[portid] = 713 port_pair_params[idx >> 1].port[p ^ 1]; 714 } 715 } else { 716 RTE_ETH_FOREACH_DEV(portid) { 717 /* skip ports that are not enabled */ 718 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 719 continue; 720 721 if (nb_ports_in_mask % 2) { 722 l2fwd_dst_ports[portid] = last_port; 723 l2fwd_dst_ports[last_port] = portid; 724 } else { 725 last_port = portid; 726 } 727 728 nb_ports_in_mask++; 729 } 730 if (nb_ports_in_mask % 2) { 731 printf("Notice: odd number of ports in portmask.\n"); 732 l2fwd_dst_ports[last_port] = last_port; 733 } 734 } 735 /* >8 End of initialization of the driver. */ 736 737 rx_lcore_id = 0; 738 qconf = NULL; 739 740 /* Initialize the port/queue configuration of each logical core */ 741 RTE_ETH_FOREACH_DEV(portid) { 742 /* skip ports that are not enabled */ 743 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 744 continue; 745 746 /* get the lcore_id for this port */ 747 while (rte_lcore_is_enabled(rx_lcore_id) == 0 || 748 lcore_queue_conf[rx_lcore_id].n_rx_port == 749 l2fwd_rx_queue_per_lcore) { 750 rx_lcore_id++; 751 if (rx_lcore_id >= RTE_MAX_LCORE) 752 rte_exit(EXIT_FAILURE, "Not enough cores\n"); 753 } 754 755 if (qconf != &lcore_queue_conf[rx_lcore_id]) { 756 /* Assigned a new logical core in the loop above. */ 757 qconf = &lcore_queue_conf[rx_lcore_id]; 758 nb_lcores++; 759 } 760 761 qconf->rx_port_list[qconf->n_rx_port] = portid; 762 qconf->n_rx_port++; 763 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id, 764 portid, l2fwd_dst_ports[portid]); 765 } 766 767 nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST + 768 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U); 769 770 /* Create the mbuf pool. 8< */ 771 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs, 772 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, 773 rte_socket_id()); 774 if (l2fwd_pktmbuf_pool == NULL) 775 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); 776 /* >8 End of create the mbuf pool. */ 777 778 /* Initialise each port */ 779 RTE_ETH_FOREACH_DEV(portid) { 780 struct rte_eth_rxconf rxq_conf; 781 struct rte_eth_txconf txq_conf; 782 struct rte_eth_conf local_port_conf = port_conf; 783 struct rte_eth_dev_info dev_info; 784 785 /* skip ports that are not enabled */ 786 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 787 printf("Skipping disabled port %u\n", portid); 788 continue; 789 } 790 nb_ports_available++; 791 792 /* init port */ 793 printf("Initializing port %u... ", portid); 794 fflush(stdout); 795 796 ret = rte_eth_dev_info_get(portid, &dev_info); 797 if (ret != 0) 798 rte_exit(EXIT_FAILURE, 799 "Error during getting device (port %u) info: %s\n", 800 portid, strerror(-ret)); 801 802 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) 803 local_port_conf.txmode.offloads |= 804 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; 805 /* Configure the number of queues for a port. */ 806 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf); 807 if (ret < 0) 808 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", 809 ret, portid); 810 /* >8 End of configuration of the number of queues for a port. */ 811 812 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd, 813 &nb_txd); 814 if (ret < 0) 815 rte_exit(EXIT_FAILURE, 816 "Cannot adjust number of descriptors: err=%d, port=%u\n", 817 ret, portid); 818 819 ret = rte_eth_macaddr_get(portid, 820 &l2fwd_ports_eth_addr[portid]); 821 if (ret < 0) 822 rte_exit(EXIT_FAILURE, 823 "Cannot get MAC address: err=%d, port=%u\n", 824 ret, portid); 825 826 /* init one RX queue */ 827 fflush(stdout); 828 rxq_conf = dev_info.default_rxconf; 829 rxq_conf.offloads = local_port_conf.rxmode.offloads; 830 /* RX queue setup. 8< */ 831 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, 832 rte_eth_dev_socket_id(portid), 833 &rxq_conf, 834 l2fwd_pktmbuf_pool); 835 if (ret < 0) 836 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", 837 ret, portid); 838 /* >8 End of RX queue setup. */ 839 840 /* Init one TX queue on each port. 8< */ 841 fflush(stdout); 842 txq_conf = dev_info.default_txconf; 843 txq_conf.offloads = local_port_conf.txmode.offloads; 844 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, 845 rte_eth_dev_socket_id(portid), 846 &txq_conf); 847 if (ret < 0) 848 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", 849 ret, portid); 850 /* >8 End of init one TX queue on each port. */ 851 852 /* Initialize TX buffers */ 853 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer", 854 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0, 855 rte_eth_dev_socket_id(portid)); 856 if (tx_buffer[portid] == NULL) 857 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n", 858 portid); 859 860 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST); 861 862 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], 863 rte_eth_tx_buffer_count_callback, 864 &port_statistics[portid].dropped); 865 if (ret < 0) 866 rte_exit(EXIT_FAILURE, 867 "Cannot set error callback for tx buffer on port %u\n", 868 portid); 869 870 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL, 871 0); 872 if (ret < 0) 873 printf("Port %u, Failed to disable Ptype parsing\n", 874 portid); 875 /* Start device */ 876 ret = rte_eth_dev_start(portid); 877 if (ret < 0) 878 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", 879 ret, portid); 880 881 printf("done: \n"); 882 if (promiscuous_on) { 883 ret = rte_eth_promiscuous_enable(portid); 884 if (ret != 0) 885 rte_exit(EXIT_FAILURE, 886 "rte_eth_promiscuous_enable:err=%s, port=%u\n", 887 rte_strerror(-ret), portid); 888 } 889 890 printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n", 891 portid, 892 RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid])); 893 894 /* initialize port stats */ 895 memset(&port_statistics, 0, sizeof(port_statistics)); 896 } 897 898 if (!nb_ports_available) { 899 rte_exit(EXIT_FAILURE, 900 "All available ports are disabled. Please set portmask.\n"); 901 } 902 903 check_all_ports_link_status(l2fwd_enabled_port_mask); 904 905 ret = 0; 906 /* launch per-lcore init on every lcore */ 907 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN); 908 RTE_LCORE_FOREACH_WORKER(lcore_id) { 909 if (rte_eal_wait_lcore(lcore_id) < 0) { 910 ret = -1; 911 break; 912 } 913 } 914 915 RTE_ETH_FOREACH_DEV(portid) { 916 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 917 continue; 918 printf("Closing port %d...", portid); 919 ret = rte_eth_dev_stop(portid); 920 if (ret != 0) 921 printf("rte_eth_dev_stop: err=%d, port=%d\n", 922 ret, portid); 923 rte_eth_dev_close(portid); 924 printf(" Done\n"); 925 } 926 927 /* clean up the EAL */ 928 rte_eal_cleanup(); 929 printf("Bye...\n"); 930 931 return ret; 932 } 933