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 port_pair_params { 73 #define NUM_PORTS 2 74 uint16_t port[NUM_PORTS]; 75 } __rte_cache_aligned; 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 lcore_queue_conf { 87 unsigned n_rx_port; 88 unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE]; 89 } __rte_cache_aligned; 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 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 [-P] [-q NQ]\n" 310 " -p PORTMASK: hexadecimal bitmask of ports to configure\n" 311 " -P : Enable promiscuous mode\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 "P" /* promiscuous */ 429 "q:" /* number of queues */ 430 "T:" /* timer period */ 431 ; 432 433 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating" 434 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap" 435 436 enum { 437 /* long options mapped to a short option */ 438 439 /* first long only option value must be >= 256, so that we won't 440 * conflict with short options */ 441 CMD_LINE_OPT_NO_MAC_UPDATING_NUM = 256, 442 CMD_LINE_OPT_PORTMAP_NUM, 443 }; 444 445 static const struct option lgopts[] = { 446 { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, 0, 447 CMD_LINE_OPT_NO_MAC_UPDATING_NUM}, 448 { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM}, 449 {NULL, 0, 0, 0} 450 }; 451 452 /* Parse the argument given in the command line of the application */ 453 static int 454 l2fwd_parse_args(int argc, char **argv) 455 { 456 int opt, ret, timer_secs; 457 char **argvopt; 458 int option_index; 459 char *prgname = argv[0]; 460 461 argvopt = argv; 462 port_pair_params = NULL; 463 464 while ((opt = getopt_long(argc, argvopt, short_options, 465 lgopts, &option_index)) != EOF) { 466 467 switch (opt) { 468 /* portmask */ 469 case 'p': 470 l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg); 471 if (l2fwd_enabled_port_mask == 0) { 472 printf("invalid portmask\n"); 473 l2fwd_usage(prgname); 474 return -1; 475 } 476 break; 477 case 'P': 478 promiscuous_on = 1; 479 break; 480 481 /* nqueue */ 482 case 'q': 483 l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg); 484 if (l2fwd_rx_queue_per_lcore == 0) { 485 printf("invalid queue number\n"); 486 l2fwd_usage(prgname); 487 return -1; 488 } 489 break; 490 491 /* timer period */ 492 case 'T': 493 timer_secs = l2fwd_parse_timer_period(optarg); 494 if (timer_secs < 0) { 495 printf("invalid timer period\n"); 496 l2fwd_usage(prgname); 497 return -1; 498 } 499 timer_period = timer_secs; 500 break; 501 502 /* long options */ 503 case CMD_LINE_OPT_PORTMAP_NUM: 504 ret = l2fwd_parse_port_pair_config(optarg); 505 if (ret) { 506 fprintf(stderr, "Invalid config\n"); 507 l2fwd_usage(prgname); 508 return -1; 509 } 510 break; 511 512 case CMD_LINE_OPT_NO_MAC_UPDATING_NUM: 513 mac_updating = 0; 514 break; 515 516 default: 517 l2fwd_usage(prgname); 518 return -1; 519 } 520 } 521 522 if (optind >= 0) 523 argv[optind-1] = prgname; 524 525 ret = optind-1; 526 optind = 1; /* reset getopt lib */ 527 return ret; 528 } 529 530 /* 531 * Check port pair config with enabled port mask, 532 * and for valid port pair combinations. 533 */ 534 static int 535 check_port_pair_config(void) 536 { 537 uint32_t port_pair_config_mask = 0; 538 uint32_t port_pair_mask = 0; 539 uint16_t index, i, portid; 540 541 for (index = 0; index < nb_port_pair_params; index++) { 542 port_pair_mask = 0; 543 544 for (i = 0; i < NUM_PORTS; i++) { 545 portid = port_pair_params[index].port[i]; 546 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 547 printf("port %u is not enabled in port mask\n", 548 portid); 549 return -1; 550 } 551 if (!rte_eth_dev_is_valid_port(portid)) { 552 printf("port %u is not present on the board\n", 553 portid); 554 return -1; 555 } 556 557 port_pair_mask |= 1 << portid; 558 } 559 560 if (port_pair_config_mask & port_pair_mask) { 561 printf("port %u is used in other port pairs\n", portid); 562 return -1; 563 } 564 port_pair_config_mask |= port_pair_mask; 565 } 566 567 l2fwd_enabled_port_mask &= port_pair_config_mask; 568 569 return 0; 570 } 571 572 /* Check the link status of all ports in up to 9s, and print them finally */ 573 static void 574 check_all_ports_link_status(uint32_t port_mask) 575 { 576 #define CHECK_INTERVAL 100 /* 100ms */ 577 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */ 578 uint16_t portid; 579 uint8_t count, all_ports_up, print_flag = 0; 580 struct rte_eth_link link; 581 int ret; 582 char link_status_text[RTE_ETH_LINK_MAX_STR_LEN]; 583 584 printf("\nChecking link status"); 585 fflush(stdout); 586 for (count = 0; count <= MAX_CHECK_TIME; count++) { 587 if (force_quit) 588 return; 589 all_ports_up = 1; 590 RTE_ETH_FOREACH_DEV(portid) { 591 if (force_quit) 592 return; 593 if ((port_mask & (1 << portid)) == 0) 594 continue; 595 memset(&link, 0, sizeof(link)); 596 ret = rte_eth_link_get_nowait(portid, &link); 597 if (ret < 0) { 598 all_ports_up = 0; 599 if (print_flag == 1) 600 printf("Port %u link get failed: %s\n", 601 portid, rte_strerror(-ret)); 602 continue; 603 } 604 /* print link status if flag set */ 605 if (print_flag == 1) { 606 rte_eth_link_to_str(link_status_text, 607 sizeof(link_status_text), &link); 608 printf("Port %d %s\n", portid, 609 link_status_text); 610 continue; 611 } 612 /* clear all_ports_up flag if any link down */ 613 if (link.link_status == RTE_ETH_LINK_DOWN) { 614 all_ports_up = 0; 615 break; 616 } 617 } 618 /* after finally printing all link status, get out */ 619 if (print_flag == 1) 620 break; 621 622 if (all_ports_up == 0) { 623 printf("."); 624 fflush(stdout); 625 rte_delay_ms(CHECK_INTERVAL); 626 } 627 628 /* set the print_flag if all ports up or timeout */ 629 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) { 630 print_flag = 1; 631 printf("done\n"); 632 } 633 } 634 } 635 636 static void 637 signal_handler(int signum) 638 { 639 if (signum == SIGINT || signum == SIGTERM) { 640 printf("\n\nSignal %d received, preparing to exit...\n", 641 signum); 642 force_quit = true; 643 } 644 } 645 646 int 647 main(int argc, char **argv) 648 { 649 struct lcore_queue_conf *qconf; 650 int ret; 651 uint16_t nb_ports; 652 uint16_t nb_ports_available = 0; 653 uint16_t portid, last_port; 654 unsigned lcore_id, rx_lcore_id; 655 unsigned nb_ports_in_mask = 0; 656 unsigned int nb_lcores = 0; 657 unsigned int nb_mbufs; 658 659 /* Init EAL. 8< */ 660 ret = rte_eal_init(argc, argv); 661 if (ret < 0) 662 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n"); 663 argc -= ret; 664 argv += ret; 665 666 force_quit = false; 667 signal(SIGINT, signal_handler); 668 signal(SIGTERM, signal_handler); 669 670 /* parse application arguments (after the EAL ones) */ 671 ret = l2fwd_parse_args(argc, argv); 672 if (ret < 0) 673 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n"); 674 /* >8 End of init EAL. */ 675 676 printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled"); 677 678 /* convert to number of cycles */ 679 timer_period *= rte_get_timer_hz(); 680 681 nb_ports = rte_eth_dev_count_avail(); 682 if (nb_ports == 0) 683 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n"); 684 685 if (port_pair_params != NULL) { 686 if (check_port_pair_config() < 0) 687 rte_exit(EXIT_FAILURE, "Invalid port pair config\n"); 688 } 689 690 /* check port mask to possible port mask */ 691 if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1)) 692 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n", 693 (1 << nb_ports) - 1); 694 695 /* Initialization of the driver. 8< */ 696 697 /* reset l2fwd_dst_ports */ 698 for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) 699 l2fwd_dst_ports[portid] = 0; 700 last_port = 0; 701 702 /* populate destination port details */ 703 if (port_pair_params != NULL) { 704 uint16_t idx, p; 705 706 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) { 707 p = idx & 1; 708 portid = port_pair_params[idx >> 1].port[p]; 709 l2fwd_dst_ports[portid] = 710 port_pair_params[idx >> 1].port[p ^ 1]; 711 } 712 } else { 713 RTE_ETH_FOREACH_DEV(portid) { 714 /* skip ports that are not enabled */ 715 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 716 continue; 717 718 if (nb_ports_in_mask % 2) { 719 l2fwd_dst_ports[portid] = last_port; 720 l2fwd_dst_ports[last_port] = portid; 721 } else { 722 last_port = portid; 723 } 724 725 nb_ports_in_mask++; 726 } 727 if (nb_ports_in_mask % 2) { 728 printf("Notice: odd number of ports in portmask.\n"); 729 l2fwd_dst_ports[last_port] = last_port; 730 } 731 } 732 /* >8 End of initialization of the driver. */ 733 734 rx_lcore_id = 0; 735 qconf = NULL; 736 737 /* Initialize the port/queue configuration of each logical core */ 738 RTE_ETH_FOREACH_DEV(portid) { 739 /* skip ports that are not enabled */ 740 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 741 continue; 742 743 /* get the lcore_id for this port */ 744 while (rte_lcore_is_enabled(rx_lcore_id) == 0 || 745 lcore_queue_conf[rx_lcore_id].n_rx_port == 746 l2fwd_rx_queue_per_lcore) { 747 rx_lcore_id++; 748 if (rx_lcore_id >= RTE_MAX_LCORE) 749 rte_exit(EXIT_FAILURE, "Not enough cores\n"); 750 } 751 752 if (qconf != &lcore_queue_conf[rx_lcore_id]) { 753 /* Assigned a new logical core in the loop above. */ 754 qconf = &lcore_queue_conf[rx_lcore_id]; 755 nb_lcores++; 756 } 757 758 qconf->rx_port_list[qconf->n_rx_port] = portid; 759 qconf->n_rx_port++; 760 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id, 761 portid, l2fwd_dst_ports[portid]); 762 } 763 764 nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST + 765 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U); 766 767 /* Create the mbuf pool. 8< */ 768 l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs, 769 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE, 770 rte_socket_id()); 771 if (l2fwd_pktmbuf_pool == NULL) 772 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n"); 773 /* >8 End of create the mbuf pool. */ 774 775 /* Initialise each port */ 776 RTE_ETH_FOREACH_DEV(portid) { 777 struct rte_eth_rxconf rxq_conf; 778 struct rte_eth_txconf txq_conf; 779 struct rte_eth_conf local_port_conf = port_conf; 780 struct rte_eth_dev_info dev_info; 781 782 /* skip ports that are not enabled */ 783 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) { 784 printf("Skipping disabled port %u\n", portid); 785 continue; 786 } 787 nb_ports_available++; 788 789 /* init port */ 790 printf("Initializing port %u... ", portid); 791 fflush(stdout); 792 793 ret = rte_eth_dev_info_get(portid, &dev_info); 794 if (ret != 0) 795 rte_exit(EXIT_FAILURE, 796 "Error during getting device (port %u) info: %s\n", 797 portid, strerror(-ret)); 798 799 if (dev_info.tx_offload_capa & RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE) 800 local_port_conf.txmode.offloads |= 801 RTE_ETH_TX_OFFLOAD_MBUF_FAST_FREE; 802 /* Configure the number of queues for a port. */ 803 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf); 804 if (ret < 0) 805 rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n", 806 ret, portid); 807 /* >8 End of configuration of the number of queues for a port. */ 808 809 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd, 810 &nb_txd); 811 if (ret < 0) 812 rte_exit(EXIT_FAILURE, 813 "Cannot adjust number of descriptors: err=%d, port=%u\n", 814 ret, portid); 815 816 ret = rte_eth_macaddr_get(portid, 817 &l2fwd_ports_eth_addr[portid]); 818 if (ret < 0) 819 rte_exit(EXIT_FAILURE, 820 "Cannot get MAC address: err=%d, port=%u\n", 821 ret, portid); 822 823 /* init one RX queue */ 824 fflush(stdout); 825 rxq_conf = dev_info.default_rxconf; 826 rxq_conf.offloads = local_port_conf.rxmode.offloads; 827 /* RX queue setup. 8< */ 828 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd, 829 rte_eth_dev_socket_id(portid), 830 &rxq_conf, 831 l2fwd_pktmbuf_pool); 832 if (ret < 0) 833 rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n", 834 ret, portid); 835 /* >8 End of RX queue setup. */ 836 837 /* Init one TX queue on each port. 8< */ 838 fflush(stdout); 839 txq_conf = dev_info.default_txconf; 840 txq_conf.offloads = local_port_conf.txmode.offloads; 841 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd, 842 rte_eth_dev_socket_id(portid), 843 &txq_conf); 844 if (ret < 0) 845 rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n", 846 ret, portid); 847 /* >8 End of init one TX queue on each port. */ 848 849 /* Initialize TX buffers */ 850 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer", 851 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0, 852 rte_eth_dev_socket_id(portid)); 853 if (tx_buffer[portid] == NULL) 854 rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n", 855 portid); 856 857 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST); 858 859 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid], 860 rte_eth_tx_buffer_count_callback, 861 &port_statistics[portid].dropped); 862 if (ret < 0) 863 rte_exit(EXIT_FAILURE, 864 "Cannot set error callback for tx buffer on port %u\n", 865 portid); 866 867 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL, 868 0); 869 if (ret < 0) 870 printf("Port %u, Failed to disable Ptype parsing\n", 871 portid); 872 /* Start device */ 873 ret = rte_eth_dev_start(portid); 874 if (ret < 0) 875 rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n", 876 ret, portid); 877 878 printf("done: \n"); 879 if (promiscuous_on) { 880 ret = rte_eth_promiscuous_enable(portid); 881 if (ret != 0) 882 rte_exit(EXIT_FAILURE, 883 "rte_eth_promiscuous_enable:err=%s, port=%u\n", 884 rte_strerror(-ret), portid); 885 } 886 887 printf("Port %u, MAC address: " RTE_ETHER_ADDR_PRT_FMT "\n\n", 888 portid, 889 RTE_ETHER_ADDR_BYTES(&l2fwd_ports_eth_addr[portid])); 890 891 /* initialize port stats */ 892 memset(&port_statistics, 0, sizeof(port_statistics)); 893 } 894 895 if (!nb_ports_available) { 896 rte_exit(EXIT_FAILURE, 897 "All available ports are disabled. Please set portmask.\n"); 898 } 899 900 check_all_ports_link_status(l2fwd_enabled_port_mask); 901 902 ret = 0; 903 /* launch per-lcore init on every lcore */ 904 rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN); 905 RTE_LCORE_FOREACH_WORKER(lcore_id) { 906 if (rte_eal_wait_lcore(lcore_id) < 0) { 907 ret = -1; 908 break; 909 } 910 } 911 912 RTE_ETH_FOREACH_DEV(portid) { 913 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) 914 continue; 915 printf("Closing port %d...", portid); 916 ret = rte_eth_dev_stop(portid); 917 if (ret != 0) 918 printf("rte_eth_dev_stop: err=%d, port=%d\n", 919 ret, portid); 920 rte_eth_dev_close(portid); 921 printf(" Done\n"); 922 } 923 924 /* clean up the EAL */ 925 rte_eal_cleanup(); 926 printf("Bye...\n"); 927 928 return ret; 929 } 930