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 NB_MBUF   8192
  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 RTE_TEST_RX_DESC_DEFAULT 128
  59 #define RTE_TEST_TX_DESC_DEFAULT 512
  60 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  61 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  62
  63 /* ethernet addresses of ports */
  64 static struct 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 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  73
  74 #define MAX_RX_QUEUE_PER_LCORE 16
  75 #define MAX_TX_QUEUE_PER_PORT 16
  76 struct lcore_queue_conf {
  77         unsigned n_rx_port;
  78         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  79 } __rte_cache_aligned;
  80 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  81
  82 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  83
  84 static const struct rte_eth_conf port_conf = {
  85         .rxmode = {
  86                 .split_hdr_size = 0,
  87                 .header_split   = 0, /**< Header Split disabled */
  88                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
  89                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
  90                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
  91                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
  92         },
  93         .txmode = {
  94                 .mq_mode = ETH_MQ_TX_NONE,
  95         },
  96 };
  97
  98 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
  99
 100 /* Per-port statistics struct */
 101 struct l2fwd_port_statistics {
 102         uint64_t tx;
 103         uint64_t rx;
 104         uint64_t dropped;
 105 } __rte_cache_aligned;
 106 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 107
 108 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 109 /* A tsc-based timer responsible for triggering statistics printout */
 110 static uint64_t timer_period = 10; /* default period is 10 seconds */
 111
 112 /* Print out statistics on packets dropped */
 113 static void
 114 print_stats(void)
 115 {
 116         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 117         unsigned portid;
 118
 119         total_packets_dropped = 0;
 120         total_packets_tx = 0;
 121         total_packets_rx = 0;
 122
 123         const char clr[] = { 27, '[', '2', 'J', '\0' };
 124         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 125
 126                 /* Clear screen and move to top left */
 127         printf("%s%s", clr, topLeft);
 128
 129         printf("\nPort statistics ====================================");
 130
 131         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 132                 /* skip disabled ports */
 133                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 134                         continue;
 135                 printf("\nStatistics for port %u ------------------------------"
 136                            "\nPackets sent: %24"PRIu64
 137                            "\nPackets received: %20"PRIu64
 138                            "\nPackets dropped: %21"PRIu64,
 139                            portid,
 140                            port_statistics[portid].tx,
 141                            port_statistics[portid].rx,
 142                            port_statistics[portid].dropped);
 143
 144                 total_packets_dropped += port_statistics[portid].dropped;
 145                 total_packets_tx += port_statistics[portid].tx;
 146                 total_packets_rx += port_statistics[portid].rx;
 147         }
 148         printf("\nAggregate statistics ==============================="
 149                    "\nTotal packets sent: %18"PRIu64
 150                    "\nTotal packets received: %14"PRIu64
 151                    "\nTotal packets dropped: %15"PRIu64,
 152                    total_packets_tx,
 153                    total_packets_rx,
 154                    total_packets_dropped);
 155         printf("\n====================================================\n");
 156 }
 157
 158 static void
 159 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 160 {
 161         struct ether_hdr *eth;
 162         void *tmp;
 163
 164         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 165
 166         /* 02:00:00:00:00:xx */
 167         tmp = &eth->d_addr.addr_bytes[0];
 168         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 169
 170         /* src addr */
 171         ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 172 }
 173
 174 static void
 175 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 176 {
 177         unsigned dst_port;
 178         int sent;
 179         struct rte_eth_dev_tx_buffer *buffer;
 180
 181         dst_port = l2fwd_dst_ports[portid];
 182
 183         if (mac_updating)
 184                 l2fwd_mac_updating(m, dst_port);
 185
 186         buffer = tx_buffer[dst_port];
 187         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 188         if (sent)
 189                 port_statistics[dst_port].tx += sent;
 190 }
 191
 192 /* main processing loop */
 193 static void
 194 l2fwd_main_loop(void)
 195 {
 196         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 197         struct rte_mbuf *m;
 198         int sent;
 199         unsigned lcore_id;
 200         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 201         unsigned i, j, portid, nb_rx;
 202         struct lcore_queue_conf *qconf;
 203         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 204                         BURST_TX_DRAIN_US;
 205         struct rte_eth_dev_tx_buffer *buffer;
 206
 207         prev_tsc = 0;
 208         timer_tsc = 0;
 209
 210         lcore_id = rte_lcore_id();
 211         qconf = &lcore_queue_conf[lcore_id];
 212
 213         if (qconf->n_rx_port == 0) {
 214                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 215                 return;
 216         }
 217
 218         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 219
 220         for (i = 0; i < qconf->n_rx_port; i++) {
 221
 222                 portid = qconf->rx_port_list[i];
 223                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 224                         portid);
 225
 226         }
 227
 228         while (!force_quit) {
 229
 230                 cur_tsc = rte_rdtsc();
 231
 232                 /*
 233                  * TX burst queue drain
 234                  */
 235                 diff_tsc = cur_tsc - prev_tsc;
 236                 if (unlikely(diff_tsc > drain_tsc)) {
 237
 238                         for (i = 0; i < qconf->n_rx_port; i++) {
 239
 240                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 241                                 buffer = tx_buffer[portid];
 242
 243                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 244                                 if (sent)
 245                                         port_statistics[portid].tx += sent;
 246
 247                         }
 248
 249                         /* if timer is enabled */
 250                         if (timer_period > 0) {
 251
 252                                 /* advance the timer */
 253                                 timer_tsc += diff_tsc;
 254
 255                                 /* if timer has reached its timeout */
 256                                 if (unlikely(timer_tsc >= timer_period)) {
 257
 258                                         /* do this only on master core */
 259                                         if (lcore_id == rte_get_master_lcore()) {
 260                                                 print_stats();
 261                                                 /* reset the timer */
 262                                                 timer_tsc = 0;
 263                                         }
 264                                 }
 265                         }
 266
 267                         prev_tsc = cur_tsc;
 268                 }
 269
 270                 /*
 271                  * Read packet from RX queues
 272                  */
 273                 for (i = 0; i < qconf->n_rx_port; i++) {
 274
 275                         portid = qconf->rx_port_list[i];
 276                         nb_rx = rte_eth_rx_burst(portid, 0,
 277                                                  pkts_burst, MAX_PKT_BURST);
 278
 279                         port_statistics[portid].rx += nb_rx;
 280
 281                         for (j = 0; j < nb_rx; j++) {
 282                                 m = pkts_burst[j];
 283                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 284                                 l2fwd_simple_forward(m, portid);
 285                         }
 286                 }
 287         }
 288 }
 289
 290 static int
 291 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 292 {
 293         l2fwd_main_loop();
 294         return 0;
 295 }
 296
 297 /* display usage */
 298 static void
 299 l2fwd_usage(const char *prgname)
 300 {
 301         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 302                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 303                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 304                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 305                    "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 306                    "      When enabled:\n"
 307                    "       - The source MAC address is replaced by the TX port MAC address\n"
 308                    "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
 309                prgname);
 310 }
 311
 312 static int
 313 l2fwd_parse_portmask(const char *portmask)
 314 {
 315         char *end = NULL;
 316         unsigned long pm;
 317
 318         /* parse hexadecimal string */
 319         pm = strtoul(portmask, &end, 16);
 320         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 321                 return -1;
 322
 323         if (pm == 0)
 324                 return -1;
 325
 326         return pm;
 327 }
 328
 329 static unsigned int
 330 l2fwd_parse_nqueue(const char *q_arg)
 331 {
 332         char *end = NULL;
 333         unsigned long n;
 334
 335         /* parse hexadecimal string */
 336         n = strtoul(q_arg, &end, 10);
 337         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 338                 return 0;
 339         if (n == 0)
 340                 return 0;
 341         if (n >= MAX_RX_QUEUE_PER_LCORE)
 342                 return 0;
 343
 344         return n;
 345 }
 346
 347 static int
 348 l2fwd_parse_timer_period(const char *q_arg)
 349 {
 350         char *end = NULL;
 351         int n;
 352
 353         /* parse number string */
 354         n = strtol(q_arg, &end, 10);
 355         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 356                 return -1;
 357         if (n >= MAX_TIMER_PERIOD)
 358                 return -1;
 359
 360         return n;
 361 }
 362
 363 static const char short_options[] =
 364         "p:"  /* portmask */
 365         "q:"  /* number of queues */
 366         "T:"  /* timer period */
 367         ;
 368
 369 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 370 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 371
 372 enum {
 373         /* long options mapped to a short option */
 374
 375         /* first long only option value must be >= 256, so that we won't
 376          * conflict with short options */
 377         CMD_LINE_OPT_MIN_NUM = 256,
 378 };
 379
 380 static const struct option lgopts[] = {
 381         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 382         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 383         {NULL, 0, 0, 0}
 384 };
 385
 386 /* Parse the argument given in the command line of the application */
 387 static int
 388 l2fwd_parse_args(int argc, char **argv)
 389 {
 390         int opt, ret, timer_secs;
 391         char **argvopt;
 392         int option_index;
 393         char *prgname = argv[0];
 394
 395         argvopt = argv;
 396
 397         while ((opt = getopt_long(argc, argvopt, short_options,
 398                                   lgopts, &option_index)) != EOF) {
 399
 400                 switch (opt) {
 401                 /* portmask */
 402                 case 'p':
 403                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 404                         if (l2fwd_enabled_port_mask == 0) {
 405                                 printf("invalid portmask\n");
 406                                 l2fwd_usage(prgname);
 407                                 return -1;
 408                         }
 409                         break;
 410
 411                 /* nqueue */
 412                 case 'q':
 413                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 414                         if (l2fwd_rx_queue_per_lcore == 0) {
 415                                 printf("invalid queue number\n");
 416                                 l2fwd_usage(prgname);
 417                                 return -1;
 418                         }
 419                         break;
 420
 421                 /* timer period */
 422                 case 'T':
 423                         timer_secs = l2fwd_parse_timer_period(optarg);
 424                         if (timer_secs < 0) {
 425                                 printf("invalid timer period\n");
 426                                 l2fwd_usage(prgname);
 427                                 return -1;
 428                         }
 429                         timer_period = timer_secs;
 430                         break;
 431
 432                 /* long options */
 433                 case 0:
 434                         break;
 435
 436                 default:
 437                         l2fwd_usage(prgname);
 438                         return -1;
 439                 }
 440         }
 441
 442         if (optind >= 0)
 443                 argv[optind-1] = prgname;
 444
 445         ret = optind-1;
 446         optind = 1; /* reset getopt lib */
 447         return ret;
 448 }
 449
 450 /* Check the link status of all ports in up to 9s, and print them finally */
 451 static void
 452 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 453 {
 454 #define CHECK_INTERVAL 100 /* 100ms */
 455 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 456         uint16_t portid;
 457         uint8_t count, all_ports_up, print_flag = 0;
 458         struct rte_eth_link link;
 459
 460         printf("\nChecking link status");
 461         fflush(stdout);
 462         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 463                 if (force_quit)
 464                         return;
 465                 all_ports_up = 1;
 466                 for (portid = 0; portid < port_num; portid++) {
 467                         if (force_quit)
 468                                 return;
 469                         if ((port_mask & (1 << portid)) == 0)
 470                                 continue;
 471                         memset(&link, 0, sizeof(link));
 472                         rte_eth_link_get_nowait(portid, &link);
 473                         /* print link status if flag set */
 474                         if (print_flag == 1) {
 475                                 if (link.link_status)
 476                                         printf(
 477                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 478                                                 portid, link.link_speed,
 479                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 480                                         ("full-duplex") : ("half-duplex\n"));
 481                                 else
 482                                         printf("Port %d Link Down\n", portid);
 483                                 continue;
 484                         }
 485                         /* clear all_ports_up flag if any link down */
 486                         if (link.link_status == ETH_LINK_DOWN) {
 487                                 all_ports_up = 0;
 488                                 break;
 489                         }
 490                 }
 491                 /* after finally printing all link status, get out */
 492                 if (print_flag == 1)
 493                         break;
 494
 495                 if (all_ports_up == 0) {
 496                         printf(".");
 497                         fflush(stdout);
 498                         rte_delay_ms(CHECK_INTERVAL);
 499                 }
 500
 501                 /* set the print_flag if all ports up or timeout */
 502                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 503                         print_flag = 1;
 504                         printf("done\n");
 505                 }
 506         }
 507 }
 508
 509 static void
 510 signal_handler(int signum)
 511 {
 512         if (signum == SIGINT || signum == SIGTERM) {
 513                 printf("\n\nSignal %d received, preparing to exit...\n",
 514                                 signum);
 515                 force_quit = true;
 516         }
 517 }
 518
 519 int
 520 main(int argc, char **argv)
 521 {
 522         struct lcore_queue_conf *qconf;
 523         struct rte_eth_dev_info dev_info;
 524         int ret;
 525         uint16_t nb_ports;
 526         uint16_t nb_ports_available;
 527         uint16_t portid, last_port;
 528         unsigned lcore_id, rx_lcore_id;
 529         unsigned nb_ports_in_mask = 0;
 530
 531         /* init EAL */
 532         ret = rte_eal_init(argc, argv);
 533         if (ret < 0)
 534                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 535         argc -= ret;
 536         argv += ret;
 537
 538         force_quit = false;
 539         signal(SIGINT, signal_handler);
 540         signal(SIGTERM, signal_handler);
 541
 542         /* parse application arguments (after the EAL ones) */
 543         ret = l2fwd_parse_args(argc, argv);
 544         if (ret < 0)
 545                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 546
 547         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 548
 549         /* convert to number of cycles */
 550         timer_period *= rte_get_timer_hz();
 551
 552         /* create the mbuf pool */
 553         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF,
 554                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 555                 rte_socket_id());
 556         if (l2fwd_pktmbuf_pool == NULL)
 557                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 558
 559         nb_ports = rte_eth_dev_count();
 560         if (nb_ports == 0)
 561                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 562
 563         /* reset l2fwd_dst_ports */
 564         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 565                 l2fwd_dst_ports[portid] = 0;
 566         last_port = 0;
 567
 568         /*
 569          * Each logical core is assigned a dedicated TX queue on each port.
 570          */
 571         for (portid = 0; portid < nb_ports; portid++) {
 572                 /* skip ports that are not enabled */
 573                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 574                         continue;
 575
 576                 if (nb_ports_in_mask % 2) {
 577                         l2fwd_dst_ports[portid] = last_port;
 578                         l2fwd_dst_ports[last_port] = portid;
 579                 }
 580                 else
 581                         last_port = portid;
 582
 583                 nb_ports_in_mask++;
 584
 585                 rte_eth_dev_info_get(portid, &dev_info);
 586         }
 587         if (nb_ports_in_mask % 2) {
 588                 printf("Notice: odd number of ports in portmask.\n");
 589                 l2fwd_dst_ports[last_port] = last_port;
 590         }
 591
 592         rx_lcore_id = 0;
 593         qconf = NULL;
 594
 595         /* Initialize the port/queue configuration of each logical core */
 596         for (portid = 0; portid < nb_ports; portid++) {
 597                 /* skip ports that are not enabled */
 598                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 599                         continue;
 600
 601                 /* get the lcore_id for this port */
 602                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 603                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 604                        l2fwd_rx_queue_per_lcore) {
 605                         rx_lcore_id++;
 606                         if (rx_lcore_id >= RTE_MAX_LCORE)
 607                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 608                 }
 609
 610                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 611                         /* Assigned a new logical core in the loop above. */
 612                         qconf = &lcore_queue_conf[rx_lcore_id];
 613
 614                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 615                 qconf->n_rx_port++;
 616                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 617         }
 618
 619         nb_ports_available = nb_ports;
 620
 621         /* Initialise each port */
 622         for (portid = 0; portid < nb_ports; portid++) {
 623                 /* skip ports that are not enabled */
 624                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 625                         printf("Skipping disabled port %u\n", portid);
 626                         nb_ports_available--;
 627                         continue;
 628                 }
 629                 /* init port */
 630                 printf("Initializing port %u... ", portid);
 631                 fflush(stdout);
 632                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 633                 if (ret < 0)
 634                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 635                                   ret, portid);
 636
 637                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 638                                                        &nb_txd);
 639                 if (ret < 0)
 640                         rte_exit(EXIT_FAILURE,
 641                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 642                                  ret, portid);
 643
 644                 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
 645
 646                 /* init one RX queue */
 647                 fflush(stdout);
 648                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 649                                              rte_eth_dev_socket_id(portid),
 650                                              NULL,
 651                                              l2fwd_pktmbuf_pool);
 652                 if (ret < 0)
 653                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 654                                   ret, portid);
 655
 656                 /* init one TX queue on each port */
 657                 fflush(stdout);
 658                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 659                                 rte_eth_dev_socket_id(portid),
 660                                 NULL);
 661                 if (ret < 0)
 662                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 663                                 ret, portid);
 664
 665                 /* Initialize TX buffers */
 666                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 667                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 668                                 rte_eth_dev_socket_id(portid));
 669                 if (tx_buffer[portid] == NULL)
 670                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 671                                         portid);
 672
 673                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 674
 675                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 676                                 rte_eth_tx_buffer_count_callback,
 677                                 &port_statistics[portid].dropped);
 678                 if (ret < 0)
 679                         rte_exit(EXIT_FAILURE,
 680                         "Cannot set error callback for tx buffer on port %u\n",
 681                                  portid);
 682
 683                 /* Start device */
 684                 ret = rte_eth_dev_start(portid);
 685                 if (ret < 0)
 686                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 687                                   ret, portid);
 688
 689                 printf("done: \n");
 690
 691                 rte_eth_promiscuous_enable(portid);
 692
 693                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 694                                 portid,
 695                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 696                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 697                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 698                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 699                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 700                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 701
 702                 /* initialize port stats */
 703                 memset(&port_statistics, 0, sizeof(port_statistics));
 704         }
 705
 706         if (!nb_ports_available) {
 707                 rte_exit(EXIT_FAILURE,
 708                         "All available ports are disabled. Please set portmask.\n");
 709         }
 710
 711         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 712
 713         ret = 0;
 714         /* launch per-lcore init on every lcore */
 715         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 716         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 717                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 718                         ret = -1;
 719                         break;
 720                 }
 721         }
 722
 723         for (portid = 0; portid < nb_ports; portid++) {
 724                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 725                         continue;
 726                 printf("Closing port %d...", portid);
 727                 rte_eth_dev_stop(portid);
 728                 rte_eth_dev_close(portid);
 729                 printf(" Done\n");
 730         }
 731         printf("Bye...\n");
 732
 733         return ret;
 734 }