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 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1 47 48 #define MAX_PKT_BURST 32 49 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */ 50 #define MEMPOOL_CACHE_SIZE 256 51 52 /* 53 * Configurable number of RX/TX ring descriptors 54 */ 55 #define RTE_TEST_RX_DESC_DEFAULT 1024 56 #define RTE_TEST_TX_DESC_DEFAULT 1024 57 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT; 58 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT; 59 60 /* ethernet addresses of ports */ 61 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS]; 62 63 /* mask of enabled ports */ 64 static uint32_t l2fwd_enabled_port_mask = 0; 65 66 /* list of enabled ports */ 67 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS]; 68 69 struct port_pair_params { 70 #define NUM_PORTS 2 71 uint16_t port[NUM_PORTS]; 72 } __rte_cache_aligned; 73 74 static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2]; 75 static struct port_pair_params *port_pair_params; 76 static uint16_t nb_port_pair_params; 77 78 static unsigned int l2fwd_rx_queue_per_lcore = 1; 79 80 #define MAX_RX_QUEUE_PER_LCORE 16 81 #define MAX_TX_QUEUE_PER_PORT 16 82 /* List of queues to be polled for a given lcore. 8< */ 83 struct lcore_queue_conf { 84 unsigned n_rx_port; 85 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; 86 } __rte_cache_aligned; 87 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE]; 88 /* >8 End of list of queues to be polled for a given lcore. */ 89 90 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS]; 91 92 static struct rte_eth_conf port_conf = { 93 .rxmode = { 94 .split_hdr_size = 0, 95 }, 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 l2fwd_port_statistics { 105 uint64_t tx; 106 uint64_t rx; 107 uint64_t dropped; 108 } __rte_cache_aligned; 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 port_statistics[portid].rx += nb_rx; 287 288 for (j = 0; j < nb_rx; j++) { 289 m = pkts_burst[j]; 290 rte_prefetch0(rte_pktmbuf_mtod(m, void *)); 291 l2fwd_simple_forward(m, portid); 292 } 293 } 294 /* >8 End of read packet from RX queues. */ 295 } 296 } 297 298 static int 299 l2fwd_launch_one_lcore(__rte_unused void *dummy) 300 { 301 l2fwd_main_loop(); 302 return 0; 303 } 304 305 /* display usage */ 306 static void 307 l2fwd_usage(const char *prgname) 308 { 309 printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n" 310 " -p PORTMASK: hexadecimal bitmask of ports to configure\n" 311 " -q NQ: number of queue (=ports) per lcore (default is 1)\n" 312 " -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n" 313 " --no-mac-updating: Disable MAC addresses updating (enabled by default)\n" 314 " When enabled:\n" 315 " - The source MAC address is replaced by the TX port MAC address\n" 316 " - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n" 317 " --portmap: Configure forwarding port pair mapping\n" 318 " Default: alternate port pairs\n\n", 319 prgname); 320 } 321 322 static int 323 l2fwd_parse_portmask(const char *portmask) 324 { 325 char *end = NULL; 326 unsigned long pm; 327 328 /* parse hexadecimal string */ 329 pm = strtoul(portmask, &end, 16); 330 if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0')) 331 return 0; 332 333 return pm; 334 } 335 336 static int 337 l2fwd_parse_port_pair_config(const char *q_arg) 338 { 339 enum fieldnames { 340 FLD_PORT1 = 0, 341 FLD_PORT2, 342 _NUM_FLD 343 }; 344 unsigned long int_fld[_NUM_FLD]; 345 const char *p, *p0 = q_arg; 346 char *str_fld[_NUM_FLD]; 347 unsigned int size; 348 char s[256]; 349 char *end; 350 int i; 351 352 nb_port_pair_params = 0; 353 354 while ((p = strchr(p0, '(')) != NULL) { 355 ++p; 356 p0 = strchr(p, ')'); 357 if (p0 == NULL) 358 return -1; 359 360 size = p0 - p; 361 if (size >= sizeof(s)) 362 return -1; 363 364 memcpy(s, p, size); 365 s[size] = '\0'; 366 if (rte_strsplit(s, sizeof(s), str_fld, 367 _NUM_FLD, ',') != _NUM_FLD) 368 return -1; 369 for (i = 0; i < _NUM_FLD; i++) { 370 errno = 0; 371 int_fld[i] = strtoul(str_fld[i], &end, 0); 372 if (errno != 0 || end == str_fld[i] || 373 int_fld[i] >= RTE_MAX_ETHPORTS) 374 return -1; 375 } 376 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) { 377 printf("exceeded max number of port pair params: %hu\n", 378 nb_port_pair_params); 379 return -1; 380 } 381 port_pair_params_array[nb_port_pair_params].port[0] = 382 (uint16_t)int_fld[FLD_PORT1]; 383 port_pair_params_array[nb_port_pair_params].port[1] = 384 (uint16_t)int_fld[FLD_PORT2]; 385 ++nb_port_pair_params; 386 } 387 port_pair_params = port_pair_params_array; 388 return 0; 389 } 390 391 static unsigned int 392 l2fwd_parse_nqueue(const char *q_arg) 393 { 394 char *end = NULL; 395 unsigned long n; 396 397 /* parse hexadecimal string */ 398 n = strtoul(q_arg, &end, 10); 399 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 400 return 0; 401 if (n == 0) 402 return 0; 403 if (n >= MAX_RX_QUEUE_PER_LCORE) 404 return 0; 405 406 return n; 407 } 408 409 static int 410 l2fwd_parse_timer_period(const char *q_arg) 411 { 412 char *end = NULL; 413 int n; 414 415 /* parse number string */ 416 n = strtol(q_arg, &end, 10); 417 if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0')) 418 return -1; 419 if (n >= MAX_TIMER_PERIOD) 420 return -1; 421 422 return n; 423 } 424 425 static const char short_options[] = 426 "p:" /* portmask */ 427 "q:" /* number of queues */ 428 "T:" /* timer period */ 429 ; 430 431 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating" 432 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap" 433 434 enum { 435 /* long options mapped to a short option */ 436 437 /* first long only option value must be >= 256, so that we won't 438 * conflict with short options */ 439 CMD_LINE_OPT_NO_MAC_UPDATING_NUM = 256, 440 CMD_LINE_OPT_PORTMAP_NUM, 441 }; 442 443 static const struct option lgopts[] = { 444 { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0, 445 CMD_LINE_OPT_NO_MAC_UPDATING_NUM}, 446 { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM}, 447 {NULL, 0, 0, 0} 448 }; 449 450 /* Parse the argument given in the command line of the application */ 451 static int 452 l2fwd_parse_args(int argc, char **argv) 453 { 454 int opt, ret, timer_secs; 455 char **argvopt; 456 int option_index; 457 char *prgname = argv[0]; 458 459 argvopt = argv; 460 port_pair_params = NULL; 461 462 while ((opt = getopt_long(argc, argvopt, short_options, 463 lgopts, &option_index)) != EOF) { 464 465 switch (opt) { 466 /* portmask */ 467 case 'p': 468 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg); 469 if (l2fwd_enabled_port_mask == 0) { 470 printf("invalid portmask\n"); 471 l2fwd_usage(prgname); 472 return -1; 473 } 474 break; 475 476 /* nqueue */ 477 case 'q': 478 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg); 479 if (l2fwd_rx_queue_per_lcore == 0) { 480 printf("invalid queue number\n"); 481 l2fwd_usage(prgname); 482 return -1; 483 } 484 break; 485 486 /* timer period */ 487 case 'T': 488 timer_secs = l2fwd_parse_timer_period(optarg); 489 if (timer_secs < 0) { 490 printf("invalid timer period\n"); 491 l2fwd_usage(prgname); 492 return -1; 493 } 494 timer_period = timer_secs; 495 break; 496 497 /* long options */ 498 case CMD_LINE_OPT_PORTMAP_NUM: 499 ret = l2fwd_parse_port_pair_config(optarg); 500 if (ret) { 501 fprintf(stderr, "Invalid config\n"); 502 l2fwd_usage(prgname); 503 return -1; 504 } 505 break; 506 507 case CMD_LINE_OPT_NO_MAC_UPDATING_NUM: 508 mac_updating = 0; 509 break; 510 511 default: 512 l2fwd_usage(prgname); 513 return -1; 514 } 515 } 516 517 if (optind >= 0) 518 argv[optind-1] = prgname; 519 520 ret = optind-1; 521 optind = 1; /* reset getopt lib */ 522 return ret; 523 } 524 525 /* 526 * Check port pair config with enabled port mask, 527 * and for valid port pair combinations. 528 */ 529 static int 530 check_port_pair_config(void) 531 { 532 uint32_t port_pair_config_mask = 0; 533 uint32_t port_pair_mask = 0; 534 uint16_t index, i, portid; 535 536 for (index = 0; index < nb_port_pair_params; index++) { 537 port_pair_mask = 0; 538 539 for (i = 0; i < NUM_PORTS; i++) { 540 portid = port_pair_params[index].port[i]; 541 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 542 printf("port %u is not enabled in port mask\n", 543 portid); 544 return -1; 545 } 546 if (!rte_eth_dev_is_valid_port(portid)) { 547 printf("port %u is not present on the board\n", 548 portid); 549 return -1; 550 } 551 552 port_pair_mask |= 1 << portid; 553 } 554 555 if (port_pair_config_mask & port_pair_mask) { 556 printf("port %u is used in other port pairs\n", portid); 557 return -1; 558 } 559 port_pair_config_mask |= port_pair_mask; 560 } 561 562 l2fwd_enabled_port_mask &= port_pair_config_mask; 563 564 return 0; 565 } 566 567 /* Check the link status of all ports in up to 9s, and print them finally */ 568 static void 569 check_all_ports_link_status(uint32_t port_mask) 570 { 571 #define CHECK_INTERVAL 100 /* 100ms */ 572 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 573 uint16_t portid; 574 uint8_t count, all_ports_up, print_flag = 0; 575 struct rte_eth_link link; 576 int ret; 577 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 578 579 printf("\nChecking link status"); 580 fflush(stdout); 581 for (count = 0; count <= MAX_CHECK_TIME; count++) { 582 if (force_quit) 583 return; 584 all_ports_up = 1; 585 RTE_ETH_FOREACH_DEV(portid) { 586 if (force_quit) 587 return; 588 if ((port_mask & (1 << portid)) == 0) 589 continue; 590 memset(&link, 0, sizeof(link)); 591 ret = rte_eth_link_get_nowait(portid, &link); 592 if (ret < 0) { 593 all_ports_up = 0; 594 if (print_flag == 1) 595 printf("Port %u link get failed: %s\n", 596 portid, rte_strerror(-ret)); 597 continue; 598 } 599 /* print link status if flag set */ 600 if (print_flag == 1) { 601 rte_eth_link_to_str(link_status_text, 602 sizeof(link_status_text), &link); 603 printf("Port %d %s\n", portid, 604 link_status_text); 605 continue; 606 } 607 /* clear all_ports_up flag if any link down */ 608 if (link.link_status == RTE_ETH_LINK_DOWN) { 609 all_ports_up = 0; 610 break; 611 } 612 } 613 /* after finally printing all link status, get out */ 614 if (print_flag == 1) 615 break; 616 617 if (all_ports_up == 0) { 618 printf("."); 619 fflush(stdout); 620 rte_delay_ms(CHECK_INTERVAL); 621 } 622 623 /* set the print_flag if all ports up or timeout */ 624 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 625 print_flag = 1; 626 printf("done\n"); 627 } 628 } 629 } 630 631 static void 632 signal_handler(int signum) 633 { 634 if (signum == SIGINT || signum == SIGTERM) { 635 printf("\n\nSignal %d received, preparing to exit...\n", 636 signum); 637 force_quit = true; 638 } 639 } 640 641 int 642 main(int argc, char **argv) 643 { 644 struct lcore_queue_conf *qconf; 645 int ret; 646 uint16_t nb_ports; 647 uint16_t nb_ports_available = 0; 648 uint16_t portid, last_port; 649 unsigned lcore_id, rx_lcore_id; 650 unsigned nb_ports_in_mask = 0; 651 unsigned int nb_lcores = 0; 652 unsigned int nb_mbufs; 653 654 /* Init EAL. 8< */ 655 ret = rte_eal_init(argc, argv); 656 if (ret < 0) 657 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); 658 argc -= ret; 659 argv += ret; 660 661 force_quit = false; 662 signal(SIGINT, signal_handler); 663 signal(SIGTERM, signal_handler); 664 665 /* parse application arguments (after the EAL ones) */ 666 ret = l2fwd_parse_args(argc, argv); 667 if (ret < 0) 668 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); 669 /* >8 End of init EAL. */ 670 671 printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled"); 672 673 /* convert to number of cycles */ 674 timer_period *= rte_get_timer_hz(); 675 676 nb_ports = rte_eth_dev_count_avail(); 677 if (nb_ports == 0) 678 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); 679 680 if (port_pair_params != NULL) { 681 if (check_port_pair_config() < 0) 682 rte_exit(EXIT_FAILURE, "Invalid port pair config\n"); 683 } 684 685 /* check port mask to possible port mask */ 686 if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1)) 687 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n", 688 (1 << nb_ports) - 1); 689 690 /* Initialization of the driver. 8< */ 691 692 /* reset l2fwd_dst_ports */ 693 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) 694 l2fwd_dst_ports[portid] = 0; 695 last_port = 0; 696 697 /* populate destination port details */ 698 if (port_pair_params != NULL) { 699 uint16_t idx, p; 700 701 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) { 702 p = idx & 1; 703 portid = port_pair_params[idx >> 1].port[p]; 704 l2fwd_dst_ports[portid] = 705 port_pair_params[idx >> 1].port[p ^ 1]; 706 } 707 } else { 708 RTE_ETH_FOREACH_DEV(portid) { 709 /* skip ports that are not enabled */ 710 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 711 continue; 712 713 if (nb_ports_in_mask % 2) { 714 l2fwd_dst_ports[portid] = last_port; 715 l2fwd_dst_ports[last_port] = portid; 716 } else { 717 last_port = portid; 718 } 719 720 nb_ports_in_mask++; 721 } 722 if (nb_ports_in_mask % 2) { 723 printf("Notice: odd number of ports in portmask.\n"); 724 l2fwd_dst_ports[last_port] = last_port; 725 } 726 } 727 /* >8 End of initialization of the driver. */ 728 729 rx_lcore_id = 0; 730 qconf = NULL; 731 732 /* Initialize the port/queue configuration of each logical core */ 733 RTE_ETH_FOREACH_DEV(portid) { 734 /* skip ports that are not enabled */ 735 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 736 continue; 737 738 /* get the lcore_id for this port */ 739 while (rte_lcore_is_enabled(rx_lcore_id) == 0 || 740 lcore_queue_conf[rx_lcore_id].n_rx_port == 741 l2fwd_rx_queue_per_lcore) { 742 rx_lcore_id++; 743 if (rx_lcore_id >= RTE_MAX_LCORE) 744 rte_exit(EXIT_FAILURE, "Not enough cores\n"); 745 } 746 747 if (qconf != &lcore_queue_conf[rx_lcore_id]) { 748 /* Assigned a new logical core in the loop above. */ 749 qconf = &lcore_queue_conf[rx_lcore_id]; 750 nb_lcores++; 751 } 752 753 qconf->rx_port_list[qconf->n_rx_port] = portid; 754 qconf->n_rx_port++; 755 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id, 756 portid, l2fwd_dst_ports[portid]); 757 } 758 759 nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST + 760 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U); 761 762 /* Create the mbuf pool. 8< */ 763 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs, 764 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, 765 rte_socket_id()); 766 if (l2fwd_pktmbuf_pool == NULL) 767 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); 768 /* >8 End of create the mbuf pool. */ 769 770 /* Initialise each port */ 771 RTE_ETH_FOREACH_DEV(portid) { 772 struct rte_eth_rxconf rxq_conf; 773 struct rte_eth_txconf txq_conf; 774 struct rte_eth_conf local_port_conf = port_conf; 775 struct rte_eth_dev_info dev_info; 776 777 /* skip ports that are not enabled */ 778 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 779 printf("Skipping disabled port %u\n", portid); 780 continue; 781 } 782 nb_ports_available++; 783 784 /* init port */ 785 printf("Initializing port %u... ", portid); 786 fflush(stdout); 787 788 ret = rte_eth_dev_info_get(portid, &dev_info); 789 if (ret != 0) 790 rte_exit(EXIT_FAILURE, 791 "Error during getting device (port %u) info: %s\n", 792 portid, strerror(-ret)); 793 794 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) 795 local_port_conf.txmode.offloads |= 796 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; 797 /* Configure the number of queues for a port. */ 798 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf); 799 if (ret < 0) 800 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", 801 ret, portid); 802 /* >8 End of configuration of the number of queues for a port. */ 803 804 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd, 805 &nb_txd); 806 if (ret < 0) 807 rte_exit(EXIT_FAILURE, 808 "Cannot adjust number of descriptors: err=%d, port=%u\n", 809 ret, portid); 810 811 ret = rte_eth_macaddr_get(portid, 812 &l2fwd_ports_eth_addr[portid]); 813 if (ret < 0) 814 rte_exit(EXIT_FAILURE, 815 "Cannot get MAC address: err=%d, port=%u\n", 816 ret, portid); 817 818 /* init one RX queue */ 819 fflush(stdout); 820 rxq_conf = dev_info.default_rxconf; 821 rxq_conf.offloads = local_port_conf.rxmode.offloads; 822 /* RX queue setup. 8< */ 823 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, 824 rte_eth_dev_socket_id(portid), 825 &rxq_conf, 826 l2fwd_pktmbuf_pool); 827 if (ret < 0) 828 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", 829 ret, portid); 830 /* >8 End of RX queue setup. */ 831 832 /* Init one TX queue on each port. 8< */ 833 fflush(stdout); 834 txq_conf = dev_info.default_txconf; 835 txq_conf.offloads = local_port_conf.txmode.offloads; 836 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, 837 rte_eth_dev_socket_id(portid), 838 &txq_conf); 839 if (ret < 0) 840 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", 841 ret, portid); 842 /* >8 End of init one TX queue on each port. */ 843 844 /* Initialize TX buffers */ 845 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer", 846 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0, 847 rte_eth_dev_socket_id(portid)); 848 if (tx_buffer[portid] == NULL) 849 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n", 850 portid); 851 852 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST); 853 854 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], 855 rte_eth_tx_buffer_count_callback, 856 &port_statistics[portid].dropped); 857 if (ret < 0) 858 rte_exit(EXIT_FAILURE, 859 "Cannot set error callback for tx buffer on port %u\n", 860 portid); 861 862 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL, 863 0); 864 if (ret < 0) 865 printf("Port %u, Failed to disable Ptype parsing\n", 866 portid); 867 /* Start device */ 868 ret = rte_eth_dev_start(portid); 869 if (ret < 0) 870 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", 871 ret, portid); 872 873 printf("done: \n"); 874 875 ret = rte_eth_promiscuous_enable(portid); 876 if (ret != 0) 877 rte_exit(EXIT_FAILURE, 878 "rte_eth_promiscuous_enable:err=%s, port=%u\n", 879 rte_strerror(-ret), portid); 880 881 printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n", 882 portid, 883 RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid])); 884 885 /* initialize port stats */ 886 memset(&port_statistics, 0, sizeof(port_statistics)); 887 } 888 889 if (!nb_ports_available) { 890 rte_exit(EXIT_FAILURE, 891 "All available ports are disabled. Please set portmask.\n"); 892 } 893 894 check_all_ports_link_status(l2fwd_enabled_port_mask); 895 896 ret = 0; 897 /* launch per-lcore init on every lcore */ 898 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN); 899 RTE_LCORE_FOREACH_WORKER(lcore_id) { 900 if (rte_eal_wait_lcore(lcore_id) < 0) { 901 ret = -1; 902 break; 903 } 904 } 905 906 RTE_ETH_FOREACH_DEV(portid) { 907 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 908 continue; 909 printf("Closing port %d...", portid); 910 ret = rte_eth_dev_stop(portid); 911 if (ret != 0) 912 printf("rte_eth_dev_stop: err=%d, port=%d\n", 913 ret, portid); 914 rte_eth_dev_close(portid); 915 printf(" Done\n"); 916 } 917 918 /* clean up the EAL */ 919 rte_eal_cleanup(); 920 printf("Bye...\n"); 921 922 return ret; 923 } 924