examples/l2fwd/main.c

   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 <netinet/in.h>
  13 #include <setjmp.h>
  14 #include <stdarg.h>
  15 #include <ctype.h>
  16 #include <errno.h>
  17 #include <getopt.h>
  18 #include <signal.h>
  19 #include <stdbool.h>
  20
  21 #include <rte_common.h>
  22 #include <rte_log.h>
  23 #include <rte_malloc.h>
  24 #include <rte_memory.h>
  25 #include <rte_memcpy.h>
  26 #include <rte_eal.h>
  27 #include <rte_launch.h>
  28 #include <rte_atomic.h>
  29 #include <rte_cycles.h>
  30 #include <rte_prefetch.h>
  31 #include <rte_lcore.h>
  32 #include <rte_per_lcore.h>
  33 #include <rte_branch_prediction.h>
  34 #include <rte_interrupts.h>
  35 #include <rte_random.h>
  36 #include <rte_debug.h>
  37 #include <rte_ether.h>
  38 #include <rte_ethdev.h>
  39 #include <rte_mempool.h>
  40 #include <rte_mbuf.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 128
  57 #define RTE_TEST_TX_DESC_DEFAULT 512
  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 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 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  71
  72 #define MAX_RX_QUEUE_PER_LCORE 16
  73 #define MAX_TX_QUEUE_PER_PORT 16
  74 struct lcore_queue_conf {
  75         unsigned n_rx_port;
  76         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  77 } __rte_cache_aligned;
  78 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  79
  80 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  81
  82 static const struct rte_eth_conf port_conf = {
  83         .rxmode = {
  84                 .split_hdr_size = 0,
  85                 .header_split   = 0, /**< Header Split disabled */
  86                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
  87                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  88                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  89                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
  90         },
  91         .txmode = {
  92                 .mq_mode = ETH_MQ_TX_NONE,
  93         },
  94 };
  95
  96 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
  97
  98 /* Per-port statistics struct */
  99 struct l2fwd_port_statistics {
 100         uint64_t tx;
 101         uint64_t rx;
 102         uint64_t dropped;
 103 } __rte_cache_aligned;
 104 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 105
 106 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 107 /* A tsc-based timer responsible for triggering statistics printout */
 108 static uint64_t timer_period = 10; /* default period is 10 seconds */
 109
 110 /* Print out statistics on packets dropped */
 111 static void
 112 print_stats(void)
 113 {
 114         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 115         unsigned portid;
 116
 117         total_packets_dropped = 0;
 118         total_packets_tx = 0;
 119         total_packets_rx = 0;
 120
 121         const char clr[] = { 27, '[', '2', 'J', '\0' };
 122         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 123
 124                 /* Clear screen and move to top left */
 125         printf("%s%s", clr, topLeft);
 126
 127         printf("\nPort statistics ====================================");
 128
 129         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 130                 /* skip disabled ports */
 131                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 132                         continue;
 133                 printf("\nStatistics for port %u ------------------------------"
 134                            "\nPackets sent: %24"PRIu64
 135                            "\nPackets received: %20"PRIu64
 136                            "\nPackets dropped: %21"PRIu64,
 137                            portid,
 138                            port_statistics[portid].tx,
 139                            port_statistics[portid].rx,
 140                            port_statistics[portid].dropped);
 141
 142                 total_packets_dropped += port_statistics[portid].dropped;
 143                 total_packets_tx += port_statistics[portid].tx;
 144                 total_packets_rx += port_statistics[portid].rx;
 145         }
 146         printf("\nAggregate statistics ==============================="
 147                    "\nTotal packets sent: %18"PRIu64
 148                    "\nTotal packets received: %14"PRIu64
 149                    "\nTotal packets dropped: %15"PRIu64,
 150                    total_packets_tx,
 151                    total_packets_rx,
 152                    total_packets_dropped);
 153         printf("\n====================================================\n");
 154 }
 155
 156 static void
 157 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 158 {
 159         struct ether_hdr *eth;
 160         void *tmp;
 161
 162         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 163
 164         /* 02:00:00:00:00:xx */
 165         tmp = &eth->d_addr.addr_bytes[0];
 166         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 167
 168         /* src addr */
 169         ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 170 }
 171
 172 static void
 173 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 174 {
 175         unsigned dst_port;
 176         int sent;
 177         struct rte_eth_dev_tx_buffer *buffer;
 178
 179         dst_port = l2fwd_dst_ports[portid];
 180
 181         if (mac_updating)
 182                 l2fwd_mac_updating(m, dst_port);
 183
 184         buffer = tx_buffer[dst_port];
 185         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 186         if (sent)
 187                 port_statistics[dst_port].tx += sent;
 188 }
 189
 190 /* main processing loop */
 191 static void
 192 l2fwd_main_loop(void)
 193 {
 194         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 195         struct rte_mbuf *m;
 196         int sent;
 197         unsigned lcore_id;
 198         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 199         unsigned i, j, portid, nb_rx;
 200         struct lcore_queue_conf *qconf;
 201         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 202                         BURST_TX_DRAIN_US;
 203         struct rte_eth_dev_tx_buffer *buffer;
 204
 205         prev_tsc = 0;
 206         timer_tsc = 0;
 207
 208         lcore_id = rte_lcore_id();
 209         qconf = &lcore_queue_conf[lcore_id];
 210
 211         if (qconf->n_rx_port == 0) {
 212                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 213                 return;
 214         }
 215
 216         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 217
 218         for (i = 0; i < qconf->n_rx_port; i++) {
 219
 220                 portid = qconf->rx_port_list[i];
 221                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 222                         portid);
 223
 224         }
 225
 226         while (!force_quit) {
 227
 228                 cur_tsc = rte_rdtsc();
 229
 230                 /*
 231                  * TX burst queue drain
 232                  */
 233                 diff_tsc = cur_tsc - prev_tsc;
 234                 if (unlikely(diff_tsc > drain_tsc)) {
 235
 236                         for (i = 0; i < qconf->n_rx_port; i++) {
 237
 238                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 239                                 buffer = tx_buffer[portid];
 240
 241                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 242                                 if (sent)
 243                                         port_statistics[portid].tx += sent;
 244
 245                         }
 246
 247                         /* if timer is enabled */
 248                         if (timer_period > 0) {
 249
 250                                 /* advance the timer */
 251                                 timer_tsc += diff_tsc;
 252
 253                                 /* if timer has reached its timeout */
 254                                 if (unlikely(timer_tsc >= timer_period)) {
 255
 256                                         /* do this only on master core */
 257                                         if (lcore_id == rte_get_master_lcore()) {
 258                                                 print_stats();
 259                                                 /* reset the timer */
 260                                                 timer_tsc = 0;
 261                                         }
 262                                 }
 263                         }
 264
 265                         prev_tsc = cur_tsc;
 266                 }
 267
 268                 /*
 269                  * Read packet from RX queues
 270                  */
 271                 for (i = 0; i < qconf->n_rx_port; i++) {
 272
 273                         portid = qconf->rx_port_list[i];
 274                         nb_rx = rte_eth_rx_burst(portid, 0,
 275                                                  pkts_burst, MAX_PKT_BURST);
 276
 277                         port_statistics[portid].rx += nb_rx;
 278
 279                         for (j = 0; j < nb_rx; j++) {
 280                                 m = pkts_burst[j];
 281                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 282                                 l2fwd_simple_forward(m, portid);
 283                         }
 284                 }
 285         }
 286 }
 287
 288 static int
 289 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 290 {
 291         l2fwd_main_loop();
 292         return 0;
 293 }
 294
 295 /* display usage */
 296 static void
 297 l2fwd_usage(const char *prgname)
 298 {
 299         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 300                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 301                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 302                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 303                    "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 304                    "      When enabled:\n"
 305                    "       - The source MAC address is replaced by the TX port MAC address\n"
 306                    "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
 307                prgname);
 308 }
 309
 310 static int
 311 l2fwd_parse_portmask(const char *portmask)
 312 {
 313         char *end = NULL;
 314         unsigned long pm;
 315
 316         /* parse hexadecimal string */
 317         pm = strtoul(portmask, &end, 16);
 318         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 319                 return -1;
 320
 321         if (pm == 0)
 322                 return -1;
 323
 324         return pm;
 325 }
 326
 327 static unsigned int
 328 l2fwd_parse_nqueue(const char *q_arg)
 329 {
 330         char *end = NULL;
 331         unsigned long n;
 332
 333         /* parse hexadecimal string */
 334         n = strtoul(q_arg, &end, 10);
 335         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 336                 return 0;
 337         if (n == 0)
 338                 return 0;
 339         if (n >= MAX_RX_QUEUE_PER_LCORE)
 340                 return 0;
 341
 342         return n;
 343 }
 344
 345 static int
 346 l2fwd_parse_timer_period(const char *q_arg)
 347 {
 348         char *end = NULL;
 349         int n;
 350
 351         /* parse number string */
 352         n = strtol(q_arg, &end, 10);
 353         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 354                 return -1;
 355         if (n >= MAX_TIMER_PERIOD)
 356                 return -1;
 357
 358         return n;
 359 }
 360
 361 static const char short_options[] =
 362         "p:"  /* portmask */
 363         "q:"  /* number of queues */
 364         "T:"  /* timer period */
 365         ;
 366
 367 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 368 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 369
 370 enum {
 371         /* long options mapped to a short option */
 372
 373         /* first long only option value must be >= 256, so that we won't
 374          * conflict with short options */
 375         CMD_LINE_OPT_MIN_NUM = 256,
 376 };
 377
 378 static const struct option lgopts[] = {
 379         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 380         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 381         {NULL, 0, 0, 0}
 382 };
 383
 384 /* Parse the argument given in the command line of the application */
 385 static int
 386 l2fwd_parse_args(int argc, char **argv)
 387 {
 388         int opt, ret, timer_secs;
 389         char **argvopt;
 390         int option_index;
 391         char *prgname = argv[0];
 392
 393         argvopt = argv;
 394
 395         while ((opt = getopt_long(argc, argvopt, short_options,
 396                                   lgopts, &option_index)) != EOF) {
 397
 398                 switch (opt) {
 399                 /* portmask */
 400                 case 'p':
 401                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 402                         if (l2fwd_enabled_port_mask == 0) {
 403                                 printf("invalid portmask\n");
 404                                 l2fwd_usage(prgname);
 405                                 return -1;
 406                         }
 407                         break;
 408
 409                 /* nqueue */
 410                 case 'q':
 411                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 412                         if (l2fwd_rx_queue_per_lcore == 0) {
 413                                 printf("invalid queue number\n");
 414                                 l2fwd_usage(prgname);
 415                                 return -1;
 416                         }
 417                         break;
 418
 419                 /* timer period */
 420                 case 'T':
 421                         timer_secs = l2fwd_parse_timer_period(optarg);
 422                         if (timer_secs < 0) {
 423                                 printf("invalid timer period\n");
 424                                 l2fwd_usage(prgname);
 425                                 return -1;
 426                         }
 427                         timer_period = timer_secs;
 428                         break;
 429
 430                 /* long options */
 431                 case 0:
 432                         break;
 433
 434                 default:
 435                         l2fwd_usage(prgname);
 436                         return -1;
 437                 }
 438         }
 439
 440         if (optind >= 0)
 441                 argv[optind-1] = prgname;
 442
 443         ret = optind-1;
 444         optind = 1; /* reset getopt lib */
 445         return ret;
 446 }
 447
 448 /* Check the link status of all ports in up to 9s, and print them finally */
 449 static void
 450 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 451 {
 452 #define CHECK_INTERVAL 100 /* 100ms */
 453 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 454         uint16_t portid;
 455         uint8_t count, all_ports_up, print_flag = 0;
 456         struct rte_eth_link link;
 457
 458         printf("\nChecking link status");
 459         fflush(stdout);
 460         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 461                 if (force_quit)
 462                         return;
 463                 all_ports_up = 1;
 464                 for (portid = 0; portid < port_num; portid++) {
 465                         if (force_quit)
 466                                 return;
 467                         if ((port_mask & (1 << portid)) == 0)
 468                                 continue;
 469                         memset(&link, 0, sizeof(link));
 470                         rte_eth_link_get_nowait(portid, &link);
 471                         /* print link status if flag set */
 472                         if (print_flag == 1) {
 473                                 if (link.link_status)
 474                                         printf(
 475                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 476                                                 portid, link.link_speed,
 477                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 478                                         ("full-duplex") : ("half-duplex\n"));
 479                                 else
 480                                         printf("Port %d Link Down\n", portid);
 481                                 continue;
 482                         }
 483                         /* clear all_ports_up flag if any link down */
 484                         if (link.link_status == ETH_LINK_DOWN) {
 485                                 all_ports_up = 0;
 486                                 break;
 487                         }
 488                 }
 489                 /* after finally printing all link status, get out */
 490                 if (print_flag == 1)
 491                         break;
 492
 493                 if (all_ports_up == 0) {
 494                         printf(".");
 495                         fflush(stdout);
 496                         rte_delay_ms(CHECK_INTERVAL);
 497                 }
 498
 499                 /* set the print_flag if all ports up or timeout */
 500                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 501                         print_flag = 1;
 502                         printf("done\n");
 503                 }
 504         }
 505 }
 506
 507 static void
 508 signal_handler(int signum)
 509 {
 510         if (signum == SIGINT || signum == SIGTERM) {
 511                 printf("\n\nSignal %d received, preparing to exit...\n",
 512                                 signum);
 513                 force_quit = true;
 514         }
 515 }
 516
 517 int
 518 main(int argc, char **argv)
 519 {
 520         struct lcore_queue_conf *qconf;
 521         int ret;
 522         uint16_t nb_ports;
 523         uint16_t nb_ports_available;
 524         uint16_t portid, last_port;
 525         unsigned lcore_id, rx_lcore_id;
 526         unsigned nb_ports_in_mask = 0;
 527         unsigned int nb_lcores = 0;
 528         unsigned int nb_mbufs;
 529
 530         /* init EAL */
 531         ret = rte_eal_init(argc, argv);
 532         if (ret < 0)
 533                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 534         argc -= ret;
 535         argv += ret;
 536
 537         force_quit = false;
 538         signal(SIGINT, signal_handler);
 539         signal(SIGTERM, signal_handler);
 540
 541         /* parse application arguments (after the EAL ones) */
 542         ret = l2fwd_parse_args(argc, argv);
 543         if (ret < 0)
 544                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 545
 546         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 547
 548         /* convert to number of cycles */
 549         timer_period *= rte_get_timer_hz();
 550
 551         nb_ports = rte_eth_dev_count();
 552         if (nb_ports == 0)
 553                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 554
 555         /* reset l2fwd_dst_ports */
 556         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 557                 l2fwd_dst_ports[portid] = 0;
 558         last_port = 0;
 559
 560         /*
 561          * Each logical core is assigned a dedicated TX queue on each port.
 562          */
 563         for (portid = 0; portid < nb_ports; portid++) {
 564                 /* skip ports that are not enabled */
 565                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 566                         continue;
 567
 568                 if (nb_ports_in_mask % 2) {
 569                         l2fwd_dst_ports[portid] = last_port;
 570                         l2fwd_dst_ports[last_port] = portid;
 571                 }
 572                 else
 573                         last_port = portid;
 574
 575                 nb_ports_in_mask++;
 576         }
 577         if (nb_ports_in_mask % 2) {
 578                 printf("Notice: odd number of ports in portmask.\n");
 579                 l2fwd_dst_ports[last_port] = last_port;
 580         }
 581
 582         rx_lcore_id = 0;
 583         qconf = NULL;
 584
 585         /* Initialize the port/queue configuration of each logical core */
 586         for (portid = 0; portid < nb_ports; portid++) {
 587                 /* skip ports that are not enabled */
 588                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 589                         continue;
 590
 591                 /* get the lcore_id for this port */
 592                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 593                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 594                        l2fwd_rx_queue_per_lcore) {
 595                         rx_lcore_id++;
 596                         if (rx_lcore_id >= RTE_MAX_LCORE)
 597                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 598                 }
 599
 600                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
 601                         /* Assigned a new logical core in the loop above. */
 602                         qconf = &lcore_queue_conf[rx_lcore_id];
 603                         nb_lcores++;
 604                 }
 605
 606                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 607                 qconf->n_rx_port++;
 608                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 609         }
 610
 611         nb_ports_available = nb_ports;
 612
 613         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 614                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 615
 616         /* create the mbuf pool */
 617         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 618                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 619                 rte_socket_id());
 620         if (l2fwd_pktmbuf_pool == NULL)
 621                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 622
 623         /* Initialise each port */
 624         for (portid = 0; portid < nb_ports; portid++) {
 625                 /* skip ports that are not enabled */
 626                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 627                         printf("Skipping disabled port %u\n", portid);
 628                         nb_ports_available--;
 629                         continue;
 630                 }
 631                 /* init port */
 632                 printf("Initializing port %u... ", portid);
 633                 fflush(stdout);
 634                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 635                 if (ret < 0)
 636                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 637                                   ret, portid);
 638
 639                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 640                                                        &nb_txd);
 641                 if (ret < 0)
 642                         rte_exit(EXIT_FAILURE,
 643                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 644                                  ret, portid);
 645
 646                 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
 647
 648                 /* init one RX queue */
 649                 fflush(stdout);
 650                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 651                                              rte_eth_dev_socket_id(portid),
 652                                              NULL,
 653                                              l2fwd_pktmbuf_pool);
 654                 if (ret < 0)
 655                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 656                                   ret, portid);
 657
 658                 /* init one TX queue on each port */
 659                 fflush(stdout);
 660                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 661                                 rte_eth_dev_socket_id(portid),
 662                                 NULL);
 663                 if (ret < 0)
 664                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 665                                 ret, portid);
 666
 667                 /* Initialize TX buffers */
 668                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 669                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 670                                 rte_eth_dev_socket_id(portid));
 671                 if (tx_buffer[portid] == NULL)
 672                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 673                                         portid);
 674
 675                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 676
 677                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 678                                 rte_eth_tx_buffer_count_callback,
 679                                 &port_statistics[portid].dropped);
 680                 if (ret < 0)
 681                         rte_exit(EXIT_FAILURE,
 682                         "Cannot set error callback for tx buffer on port %u\n",
 683                                  portid);
 684
 685                 /* Start device */
 686                 ret = rte_eth_dev_start(portid);
 687                 if (ret < 0)
 688                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 689                                   ret, portid);
 690
 691                 printf("done: \n");
 692
 693                 rte_eth_promiscuous_enable(portid);
 694
 695                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 696                                 portid,
 697                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 698                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 699                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 700                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 701                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 702                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 703
 704                 /* initialize port stats */
 705                 memset(&port_statistics, 0, sizeof(port_statistics));
 706         }
 707
 708         if (!nb_ports_available) {
 709                 rte_exit(EXIT_FAILURE,
 710                         "All available ports are disabled. Please set portmask.\n");
 711         }
 712
 713         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 714
 715         ret = 0;
 716         /* launch per-lcore init on every lcore */
 717         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 718         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 719                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 720                         ret = -1;
 721                         break;
 722                 }
 723         }
 724
 725         for (portid = 0; portid < nb_ports; portid++) {
 726                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 727                         continue;
 728                 printf("Closing port %d...", portid);
 729                 rte_eth_dev_stop(portid);
 730                 rte_eth_dev_close(portid);
 731                 printf(" Done\n");
 732         }
 733         printf("Bye...\n");
 734
 735         return ret;
 736 }