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 1024
  57 #define RTE_TEST_TX_DESC_DEFAULT 1024
  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 rte_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 struct rte_eth_conf port_conf = {
  83         .rxmode = {
  84                 .split_hdr_size = 0,
  85         },
  86         .txmode = {
  87                 .mq_mode = ETH_MQ_TX_NONE,
  88         },
  89 };
  90
  91 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
  92
  93 /* Per-port statistics struct */
  94 struct l2fwd_port_statistics {
  95         uint64_t tx;
  96         uint64_t rx;
  97         uint64_t dropped;
  98 } __rte_cache_aligned;
  99 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 100
 101 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 102 /* A tsc-based timer responsible for triggering statistics printout */
 103 static uint64_t timer_period = 10; /* default period is 10 seconds */
 104
 105 /* Print out statistics on packets dropped */
 106 static void
 107 print_stats(void)
 108 {
 109         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 110         unsigned portid;
 111
 112         total_packets_dropped = 0;
 113         total_packets_tx = 0;
 114         total_packets_rx = 0;
 115
 116         const char clr[] = { 27, '[', '2', 'J', '\0' };
 117         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 118
 119                 /* Clear screen and move to top left */
 120         printf("%s%s", clr, topLeft);
 121
 122         printf("\nPort statistics ====================================");
 123
 124         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 125                 /* skip disabled ports */
 126                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 127                         continue;
 128                 printf("\nStatistics for port %u ------------------------------"
 129                            "\nPackets sent: %24"PRIu64
 130                            "\nPackets received: %20"PRIu64
 131                            "\nPackets dropped: %21"PRIu64,
 132                            portid,
 133                            port_statistics[portid].tx,
 134                            port_statistics[portid].rx,
 135                            port_statistics[portid].dropped);
 136
 137                 total_packets_dropped += port_statistics[portid].dropped;
 138                 total_packets_tx += port_statistics[portid].tx;
 139                 total_packets_rx += port_statistics[portid].rx;
 140         }
 141         printf("\nAggregate statistics ==============================="
 142                    "\nTotal packets sent: %18"PRIu64
 143                    "\nTotal packets received: %14"PRIu64
 144                    "\nTotal packets dropped: %15"PRIu64,
 145                    total_packets_tx,
 146                    total_packets_rx,
 147                    total_packets_dropped);
 148         printf("\n====================================================\n");
 149 }
 150
 151 static void
 152 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 153 {
 154         struct rte_ether_hdr *eth;
 155         void *tmp;
 156
 157         eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 158
 159         /* 02:00:00:00:00:xx */
 160         tmp = &eth->d_addr.addr_bytes[0];
 161         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 162
 163         /* src addr */
 164         ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 165 }
 166
 167 static void
 168 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 169 {
 170         unsigned dst_port;
 171         int sent;
 172         struct rte_eth_dev_tx_buffer *buffer;
 173
 174         dst_port = l2fwd_dst_ports[portid];
 175
 176         if (mac_updating)
 177                 l2fwd_mac_updating(m, dst_port);
 178
 179         buffer = tx_buffer[dst_port];
 180         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 181         if (sent)
 182                 port_statistics[dst_port].tx += sent;
 183 }
 184
 185 /* main processing loop */
 186 static void
 187 l2fwd_main_loop(void)
 188 {
 189         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 190         struct rte_mbuf *m;
 191         int sent;
 192         unsigned lcore_id;
 193         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 194         unsigned i, j, portid, nb_rx;
 195         struct lcore_queue_conf *qconf;
 196         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 197                         BURST_TX_DRAIN_US;
 198         struct rte_eth_dev_tx_buffer *buffer;
 199
 200         prev_tsc = 0;
 201         timer_tsc = 0;
 202
 203         lcore_id = rte_lcore_id();
 204         qconf = &lcore_queue_conf[lcore_id];
 205
 206         if (qconf->n_rx_port == 0) {
 207                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 208                 return;
 209         }
 210
 211         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 212
 213         for (i = 0; i < qconf->n_rx_port; i++) {
 214
 215                 portid = qconf->rx_port_list[i];
 216                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 217                         portid);
 218
 219         }
 220
 221         while (!force_quit) {
 222
 223                 cur_tsc = rte_rdtsc();
 224
 225                 /*
 226                  * TX burst queue drain
 227                  */
 228                 diff_tsc = cur_tsc - prev_tsc;
 229                 if (unlikely(diff_tsc > drain_tsc)) {
 230
 231                         for (i = 0; i < qconf->n_rx_port; i++) {
 232
 233                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 234                                 buffer = tx_buffer[portid];
 235
 236                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 237                                 if (sent)
 238                                         port_statistics[portid].tx += sent;
 239
 240                         }
 241
 242                         /* if timer is enabled */
 243                         if (timer_period > 0) {
 244
 245                                 /* advance the timer */
 246                                 timer_tsc += diff_tsc;
 247
 248                                 /* if timer has reached its timeout */
 249                                 if (unlikely(timer_tsc >= timer_period)) {
 250
 251                                         /* do this only on master core */
 252                                         if (lcore_id == rte_get_master_lcore()) {
 253                                                 print_stats();
 254                                                 /* reset the timer */
 255                                                 timer_tsc = 0;
 256                                         }
 257                                 }
 258                         }
 259
 260                         prev_tsc = cur_tsc;
 261                 }
 262
 263                 /*
 264                  * Read packet from RX queues
 265                  */
 266                 for (i = 0; i < qconf->n_rx_port; i++) {
 267
 268                         portid = qconf->rx_port_list[i];
 269                         nb_rx = rte_eth_rx_burst(portid, 0,
 270                                                  pkts_burst, MAX_PKT_BURST);
 271
 272                         port_statistics[portid].rx += nb_rx;
 273
 274                         for (j = 0; j < nb_rx; j++) {
 275                                 m = pkts_burst[j];
 276                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 277                                 l2fwd_simple_forward(m, portid);
 278                         }
 279                 }
 280         }
 281 }
 282
 283 static int
 284 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 285 {
 286         l2fwd_main_loop();
 287         return 0;
 288 }
 289
 290 /* display usage */
 291 static void
 292 l2fwd_usage(const char *prgname)
 293 {
 294         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 295                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 296                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 297                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 298                    "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 299                    "      When enabled:\n"
 300                    "       - The source MAC address is replaced by the TX port MAC address\n"
 301                    "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
 302                prgname);
 303 }
 304
 305 static int
 306 l2fwd_parse_portmask(const char *portmask)
 307 {
 308         char *end = NULL;
 309         unsigned long pm;
 310
 311         /* parse hexadecimal string */
 312         pm = strtoul(portmask, &end, 16);
 313         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 314                 return -1;
 315
 316         if (pm == 0)
 317                 return -1;
 318
 319         return pm;
 320 }
 321
 322 static unsigned int
 323 l2fwd_parse_nqueue(const char *q_arg)
 324 {
 325         char *end = NULL;
 326         unsigned long n;
 327
 328         /* parse hexadecimal string */
 329         n = strtoul(q_arg, &end, 10);
 330         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 331                 return 0;
 332         if (n == 0)
 333                 return 0;
 334         if (n >= MAX_RX_QUEUE_PER_LCORE)
 335                 return 0;
 336
 337         return n;
 338 }
 339
 340 static int
 341 l2fwd_parse_timer_period(const char *q_arg)
 342 {
 343         char *end = NULL;
 344         int n;
 345
 346         /* parse number string */
 347         n = strtol(q_arg, &end, 10);
 348         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 349                 return -1;
 350         if (n >= MAX_TIMER_PERIOD)
 351                 return -1;
 352
 353         return n;
 354 }
 355
 356 static const char short_options[] =
 357         "p:"  /* portmask */
 358         "q:"  /* number of queues */
 359         "T:"  /* timer period */
 360         ;
 361
 362 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 363 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 364
 365 enum {
 366         /* long options mapped to a short option */
 367
 368         /* first long only option value must be >= 256, so that we won't
 369          * conflict with short options */
 370         CMD_LINE_OPT_MIN_NUM = 256,
 371 };
 372
 373 static const struct option lgopts[] = {
 374         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 375         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 376         {NULL, 0, 0, 0}
 377 };
 378
 379 /* Parse the argument given in the command line of the application */
 380 static int
 381 l2fwd_parse_args(int argc, char **argv)
 382 {
 383         int opt, ret, timer_secs;
 384         char **argvopt;
 385         int option_index;
 386         char *prgname = argv[0];
 387
 388         argvopt = argv;
 389
 390         while ((opt = getopt_long(argc, argvopt, short_options,
 391                                   lgopts, &option_index)) != EOF) {
 392
 393                 switch (opt) {
 394                 /* portmask */
 395                 case 'p':
 396                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 397                         if (l2fwd_enabled_port_mask == 0) {
 398                                 printf("invalid portmask\n");
 399                                 l2fwd_usage(prgname);
 400                                 return -1;
 401                         }
 402                         break;
 403
 404                 /* nqueue */
 405                 case 'q':
 406                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 407                         if (l2fwd_rx_queue_per_lcore == 0) {
 408                                 printf("invalid queue number\n");
 409                                 l2fwd_usage(prgname);
 410                                 return -1;
 411                         }
 412                         break;
 413
 414                 /* timer period */
 415                 case 'T':
 416                         timer_secs = l2fwd_parse_timer_period(optarg);
 417                         if (timer_secs < 0) {
 418                                 printf("invalid timer period\n");
 419                                 l2fwd_usage(prgname);
 420                                 return -1;
 421                         }
 422                         timer_period = timer_secs;
 423                         break;
 424
 425                 /* long options */
 426                 case 0:
 427                         break;
 428
 429                 default:
 430                         l2fwd_usage(prgname);
 431                         return -1;
 432                 }
 433         }
 434
 435         if (optind >= 0)
 436                 argv[optind-1] = prgname;
 437
 438         ret = optind-1;
 439         optind = 1; /* reset getopt lib */
 440         return ret;
 441 }
 442
 443 /* Check the link status of all ports in up to 9s, and print them finally */
 444 static void
 445 check_all_ports_link_status(uint32_t port_mask)
 446 {
 447 #define CHECK_INTERVAL 100 /* 100ms */
 448 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 449         uint16_t portid;
 450         uint8_t count, all_ports_up, print_flag = 0;
 451         struct rte_eth_link link;
 452
 453         printf("\nChecking link status");
 454         fflush(stdout);
 455         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 456                 if (force_quit)
 457                         return;
 458                 all_ports_up = 1;
 459                 RTE_ETH_FOREACH_DEV(portid) {
 460                         if (force_quit)
 461                                 return;
 462                         if ((port_mask & (1 << portid)) == 0)
 463                                 continue;
 464                         memset(&link, 0, sizeof(link));
 465                         rte_eth_link_get_nowait(portid, &link);
 466                         /* print link status if flag set */
 467                         if (print_flag == 1) {
 468                                 if (link.link_status)
 469                                         printf(
 470                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 471                                                 portid, link.link_speed,
 472                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 473                                         ("full-duplex") : ("half-duplex\n"));
 474                                 else
 475                                         printf("Port %d Link Down\n", portid);
 476                                 continue;
 477                         }
 478                         /* clear all_ports_up flag if any link down */
 479                         if (link.link_status == ETH_LINK_DOWN) {
 480                                 all_ports_up = 0;
 481                                 break;
 482                         }
 483                 }
 484                 /* after finally printing all link status, get out */
 485                 if (print_flag == 1)
 486                         break;
 487
 488                 if (all_ports_up == 0) {
 489                         printf(".");
 490                         fflush(stdout);
 491                         rte_delay_ms(CHECK_INTERVAL);
 492                 }
 493
 494                 /* set the print_flag if all ports up or timeout */
 495                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 496                         print_flag = 1;
 497                         printf("done\n");
 498                 }
 499         }
 500 }
 501
 502 static void
 503 signal_handler(int signum)
 504 {
 505         if (signum == SIGINT || signum == SIGTERM) {
 506                 printf("\n\nSignal %d received, preparing to exit...\n",
 507                                 signum);
 508                 force_quit = true;
 509         }
 510 }
 511
 512 int
 513 main(int argc, char **argv)
 514 {
 515         struct lcore_queue_conf *qconf;
 516         int ret;
 517         uint16_t nb_ports;
 518         uint16_t nb_ports_available = 0;
 519         uint16_t portid, last_port;
 520         unsigned lcore_id, rx_lcore_id;
 521         unsigned nb_ports_in_mask = 0;
 522         unsigned int nb_lcores = 0;
 523         unsigned int nb_mbufs;
 524
 525         /* init EAL */
 526         ret = rte_eal_init(argc, argv);
 527         if (ret < 0)
 528                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 529         argc -= ret;
 530         argv += ret;
 531
 532         force_quit = false;
 533         signal(SIGINT, signal_handler);
 534         signal(SIGTERM, signal_handler);
 535
 536         /* parse application arguments (after the EAL ones) */
 537         ret = l2fwd_parse_args(argc, argv);
 538         if (ret < 0)
 539                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 540
 541         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 542
 543         /* convert to number of cycles */
 544         timer_period *= rte_get_timer_hz();
 545
 546         nb_ports = rte_eth_dev_count_avail();
 547         if (nb_ports == 0)
 548                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 549
 550         /* check port mask to possible port mask */
 551         if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
 552                 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
 553                         (1 << nb_ports) - 1);
 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         RTE_ETH_FOREACH_DEV(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         RTE_ETH_FOREACH_DEV(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_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 612                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 613
 614         /* create the mbuf pool */
 615         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 616                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 617                 rte_socket_id());
 618         if (l2fwd_pktmbuf_pool == NULL)
 619                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 620
 621         /* Initialise each port */
 622         RTE_ETH_FOREACH_DEV(portid) {
 623                 struct rte_eth_rxconf rxq_conf;
 624                 struct rte_eth_txconf txq_conf;
 625                 struct rte_eth_conf local_port_conf = port_conf;
 626                 struct rte_eth_dev_info dev_info;
 627
 628                 /* skip ports that are not enabled */
 629                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 630                         printf("Skipping disabled port %u\n", portid);
 631                         continue;
 632                 }
 633                 nb_ports_available++;
 634
 635                 /* init port */
 636                 printf("Initializing port %u... ", portid);
 637                 fflush(stdout);
 638                 rte_eth_dev_info_get(portid, &dev_info);
 639                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 640                         local_port_conf.txmode.offloads |=
 641                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 642                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 643                 if (ret < 0)
 644                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 645                                   ret, portid);
 646
 647                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 648                                                        &nb_txd);
 649                 if (ret < 0)
 650                         rte_exit(EXIT_FAILURE,
 651                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 652                                  ret, portid);
 653
 654                 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
 655
 656                 /* init one RX queue */
 657                 fflush(stdout);
 658                 rxq_conf = dev_info.default_rxconf;
 659                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 660                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 661                                              rte_eth_dev_socket_id(portid),
 662                                              &rxq_conf,
 663                                              l2fwd_pktmbuf_pool);
 664                 if (ret < 0)
 665                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 666                                   ret, portid);
 667
 668                 /* init one TX queue on each port */
 669                 fflush(stdout);
 670                 txq_conf = dev_info.default_txconf;
 671                 txq_conf.offloads = local_port_conf.txmode.offloads;
 672                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 673                                 rte_eth_dev_socket_id(portid),
 674                                 &txq_conf);
 675                 if (ret < 0)
 676                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 677                                 ret, portid);
 678
 679                 /* Initialize TX buffers */
 680                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 681                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 682                                 rte_eth_dev_socket_id(portid));
 683                 if (tx_buffer[portid] == NULL)
 684                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 685                                         portid);
 686
 687                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 688
 689                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 690                                 rte_eth_tx_buffer_count_callback,
 691                                 &port_statistics[portid].dropped);
 692                 if (ret < 0)
 693                         rte_exit(EXIT_FAILURE,
 694                         "Cannot set error callback for tx buffer on port %u\n",
 695                                  portid);
 696
 697                 /* Start device */
 698                 ret = rte_eth_dev_start(portid);
 699                 if (ret < 0)
 700                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 701                                   ret, portid);
 702
 703                 printf("done: \n");
 704
 705                 rte_eth_promiscuous_enable(portid);
 706
 707                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 708                                 portid,
 709                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 710                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 711                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 712                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 713                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 714                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 715
 716                 /* initialize port stats */
 717                 memset(&port_statistics, 0, sizeof(port_statistics));
 718         }
 719
 720         if (!nb_ports_available) {
 721                 rte_exit(EXIT_FAILURE,
 722                         "All available ports are disabled. Please set portmask.\n");
 723         }
 724
 725         check_all_ports_link_status(l2fwd_enabled_port_mask);
 726
 727         ret = 0;
 728         /* launch per-lcore init on every lcore */
 729         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 730         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 731                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 732                         ret = -1;
 733                         break;
 734                 }
 735         }
 736
 737         RTE_ETH_FOREACH_DEV(portid) {
 738                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 739                         continue;
 740                 printf("Closing port %d...", portid);
 741                 rte_eth_dev_stop(portid);
 742                 rte_eth_dev_close(portid);
 743                 printf(" Done\n");
 744         }
 745         printf("Bye...\n");
 746
 747         return ret;
 748 }