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 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                 .ignore_offload_bitfield = 1,
  86                 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
  87         },
  88         .txmode = {
  89                 .mq_mode = ETH_MQ_TX_NONE,
  90         },
  91 };
  92
  93 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
  94
  95 /* Per-port statistics struct */
  96 struct l2fwd_port_statistics {
  97         uint64_t tx;
  98         uint64_t rx;
  99         uint64_t dropped;
 100 } __rte_cache_aligned;
 101 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 102
 103 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 104 /* A tsc-based timer responsible for triggering statistics printout */
 105 static uint64_t timer_period = 10; /* default period is 10 seconds */
 106
 107 /* Print out statistics on packets dropped */
 108 static void
 109 print_stats(void)
 110 {
 111         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 112         unsigned portid;
 113
 114         total_packets_dropped = 0;
 115         total_packets_tx = 0;
 116         total_packets_rx = 0;
 117
 118         const char clr[] = { 27, '[', '2', 'J', '\0' };
 119         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 120
 121                 /* Clear screen and move to top left */
 122         printf("%s%s", clr, topLeft);
 123
 124         printf("\nPort statistics ====================================");
 125
 126         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 127                 /* skip disabled ports */
 128                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 129                         continue;
 130                 printf("\nStatistics for port %u ------------------------------"
 131                            "\nPackets sent: %24"PRIu64
 132                            "\nPackets received: %20"PRIu64
 133                            "\nPackets dropped: %21"PRIu64,
 134                            portid,
 135                            port_statistics[portid].tx,
 136                            port_statistics[portid].rx,
 137                            port_statistics[portid].dropped);
 138
 139                 total_packets_dropped += port_statistics[portid].dropped;
 140                 total_packets_tx += port_statistics[portid].tx;
 141                 total_packets_rx += port_statistics[portid].rx;
 142         }
 143         printf("\nAggregate statistics ==============================="
 144                    "\nTotal packets sent: %18"PRIu64
 145                    "\nTotal packets received: %14"PRIu64
 146                    "\nTotal packets dropped: %15"PRIu64,
 147                    total_packets_tx,
 148                    total_packets_rx,
 149                    total_packets_dropped);
 150         printf("\n====================================================\n");
 151 }
 152
 153 static void
 154 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 155 {
 156         struct ether_hdr *eth;
 157         void *tmp;
 158
 159         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 160
 161         /* 02:00:00:00:00:xx */
 162         tmp = &eth->d_addr.addr_bytes[0];
 163         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 164
 165         /* src addr */
 166         ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 167 }
 168
 169 static void
 170 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 171 {
 172         unsigned dst_port;
 173         int sent;
 174         struct rte_eth_dev_tx_buffer *buffer;
 175
 176         dst_port = l2fwd_dst_ports[portid];
 177
 178         if (mac_updating)
 179                 l2fwd_mac_updating(m, dst_port);
 180
 181         buffer = tx_buffer[dst_port];
 182         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 183         if (sent)
 184                 port_statistics[dst_port].tx += sent;
 185 }
 186
 187 /* main processing loop */
 188 static void
 189 l2fwd_main_loop(void)
 190 {
 191         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 192         struct rte_mbuf *m;
 193         int sent;
 194         unsigned lcore_id;
 195         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 196         unsigned i, j, portid, nb_rx;
 197         struct lcore_queue_conf *qconf;
 198         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 199                         BURST_TX_DRAIN_US;
 200         struct rte_eth_dev_tx_buffer *buffer;
 201
 202         prev_tsc = 0;
 203         timer_tsc = 0;
 204
 205         lcore_id = rte_lcore_id();
 206         qconf = &lcore_queue_conf[lcore_id];
 207
 208         if (qconf->n_rx_port == 0) {
 209                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 210                 return;
 211         }
 212
 213         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 214
 215         for (i = 0; i < qconf->n_rx_port; i++) {
 216
 217                 portid = qconf->rx_port_list[i];
 218                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 219                         portid);
 220
 221         }
 222
 223         while (!force_quit) {
 224
 225                 cur_tsc = rte_rdtsc();
 226
 227                 /*
 228                  * TX burst queue drain
 229                  */
 230                 diff_tsc = cur_tsc - prev_tsc;
 231                 if (unlikely(diff_tsc > drain_tsc)) {
 232
 233                         for (i = 0; i < qconf->n_rx_port; i++) {
 234
 235                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 236                                 buffer = tx_buffer[portid];
 237
 238                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 239                                 if (sent)
 240                                         port_statistics[portid].tx += sent;
 241
 242                         }
 243
 244                         /* if timer is enabled */
 245                         if (timer_period > 0) {
 246
 247                                 /* advance the timer */
 248                                 timer_tsc += diff_tsc;
 249
 250                                 /* if timer has reached its timeout */
 251                                 if (unlikely(timer_tsc >= timer_period)) {
 252
 253                                         /* do this only on master core */
 254                                         if (lcore_id == rte_get_master_lcore()) {
 255                                                 print_stats();
 256                                                 /* reset the timer */
 257                                                 timer_tsc = 0;
 258                                         }
 259                                 }
 260                         }
 261
 262                         prev_tsc = cur_tsc;
 263                 }
 264
 265                 /*
 266                  * Read packet from RX queues
 267                  */
 268                 for (i = 0; i < qconf->n_rx_port; i++) {
 269
 270                         portid = qconf->rx_port_list[i];
 271                         nb_rx = rte_eth_rx_burst(portid, 0,
 272                                                  pkts_burst, MAX_PKT_BURST);
 273
 274                         port_statistics[portid].rx += nb_rx;
 275
 276                         for (j = 0; j < nb_rx; j++) {
 277                                 m = pkts_burst[j];
 278                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 279                                 l2fwd_simple_forward(m, portid);
 280                         }
 281                 }
 282         }
 283 }
 284
 285 static int
 286 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 287 {
 288         l2fwd_main_loop();
 289         return 0;
 290 }
 291
 292 /* display usage */
 293 static void
 294 l2fwd_usage(const char *prgname)
 295 {
 296         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 297                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 298                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 299                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 300                    "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 301                    "      When enabled:\n"
 302                    "       - The source MAC address is replaced by the TX port MAC address\n"
 303                    "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n",
 304                prgname);
 305 }
 306
 307 static int
 308 l2fwd_parse_portmask(const char *portmask)
 309 {
 310         char *end = NULL;
 311         unsigned long pm;
 312
 313         /* parse hexadecimal string */
 314         pm = strtoul(portmask, &end, 16);
 315         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 316                 return -1;
 317
 318         if (pm == 0)
 319                 return -1;
 320
 321         return pm;
 322 }
 323
 324 static unsigned int
 325 l2fwd_parse_nqueue(const char *q_arg)
 326 {
 327         char *end = NULL;
 328         unsigned long n;
 329
 330         /* parse hexadecimal string */
 331         n = strtoul(q_arg, &end, 10);
 332         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 333                 return 0;
 334         if (n == 0)
 335                 return 0;
 336         if (n >= MAX_RX_QUEUE_PER_LCORE)
 337                 return 0;
 338
 339         return n;
 340 }
 341
 342 static int
 343 l2fwd_parse_timer_period(const char *q_arg)
 344 {
 345         char *end = NULL;
 346         int n;
 347
 348         /* parse number string */
 349         n = strtol(q_arg, &end, 10);
 350         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 351                 return -1;
 352         if (n >= MAX_TIMER_PERIOD)
 353                 return -1;
 354
 355         return n;
 356 }
 357
 358 static const char short_options[] =
 359         "p:"  /* portmask */
 360         "q:"  /* number of queues */
 361         "T:"  /* timer period */
 362         ;
 363
 364 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 365 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 366
 367 enum {
 368         /* long options mapped to a short option */
 369
 370         /* first long only option value must be >= 256, so that we won't
 371          * conflict with short options */
 372         CMD_LINE_OPT_MIN_NUM = 256,
 373 };
 374
 375 static const struct option lgopts[] = {
 376         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 377         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 378         {NULL, 0, 0, 0}
 379 };
 380
 381 /* Parse the argument given in the command line of the application */
 382 static int
 383 l2fwd_parse_args(int argc, char **argv)
 384 {
 385         int opt, ret, timer_secs;
 386         char **argvopt;
 387         int option_index;
 388         char *prgname = argv[0];
 389
 390         argvopt = argv;
 391
 392         while ((opt = getopt_long(argc, argvopt, short_options,
 393                                   lgopts, &option_index)) != EOF) {
 394
 395                 switch (opt) {
 396                 /* portmask */
 397                 case 'p':
 398                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 399                         if (l2fwd_enabled_port_mask == 0) {
 400                                 printf("invalid portmask\n");
 401                                 l2fwd_usage(prgname);
 402                                 return -1;
 403                         }
 404                         break;
 405
 406                 /* nqueue */
 407                 case 'q':
 408                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 409                         if (l2fwd_rx_queue_per_lcore == 0) {
 410                                 printf("invalid queue number\n");
 411                                 l2fwd_usage(prgname);
 412                                 return -1;
 413                         }
 414                         break;
 415
 416                 /* timer period */
 417                 case 'T':
 418                         timer_secs = l2fwd_parse_timer_period(optarg);
 419                         if (timer_secs < 0) {
 420                                 printf("invalid timer period\n");
 421                                 l2fwd_usage(prgname);
 422                                 return -1;
 423                         }
 424                         timer_period = timer_secs;
 425                         break;
 426
 427                 /* long options */
 428                 case 0:
 429                         break;
 430
 431                 default:
 432                         l2fwd_usage(prgname);
 433                         return -1;
 434                 }
 435         }
 436
 437         if (optind >= 0)
 438                 argv[optind-1] = prgname;
 439
 440         ret = optind-1;
 441         optind = 1; /* reset getopt lib */
 442         return ret;
 443 }
 444
 445 /* Check the link status of all ports in up to 9s, and print them finally */
 446 static void
 447 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 448 {
 449 #define CHECK_INTERVAL 100 /* 100ms */
 450 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 451         uint16_t portid;
 452         uint8_t count, all_ports_up, print_flag = 0;
 453         struct rte_eth_link link;
 454
 455         printf("\nChecking link status");
 456         fflush(stdout);
 457         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 458                 if (force_quit)
 459                         return;
 460                 all_ports_up = 1;
 461                 for (portid = 0; portid < port_num; portid++) {
 462                         if (force_quit)
 463                                 return;
 464                         if ((port_mask & (1 << portid)) == 0)
 465                                 continue;
 466                         memset(&link, 0, sizeof(link));
 467                         rte_eth_link_get_nowait(portid, &link);
 468                         /* print link status if flag set */
 469                         if (print_flag == 1) {
 470                                 if (link.link_status)
 471                                         printf(
 472                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 473                                                 portid, link.link_speed,
 474                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 475                                         ("full-duplex") : ("half-duplex\n"));
 476                                 else
 477                                         printf("Port %d Link Down\n", portid);
 478                                 continue;
 479                         }
 480                         /* clear all_ports_up flag if any link down */
 481                         if (link.link_status == ETH_LINK_DOWN) {
 482                                 all_ports_up = 0;
 483                                 break;
 484                         }
 485                 }
 486                 /* after finally printing all link status, get out */
 487                 if (print_flag == 1)
 488                         break;
 489
 490                 if (all_ports_up == 0) {
 491                         printf(".");
 492                         fflush(stdout);
 493                         rte_delay_ms(CHECK_INTERVAL);
 494                 }
 495
 496                 /* set the print_flag if all ports up or timeout */
 497                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 498                         print_flag = 1;
 499                         printf("done\n");
 500                 }
 501         }
 502 }
 503
 504 static void
 505 signal_handler(int signum)
 506 {
 507         if (signum == SIGINT || signum == SIGTERM) {
 508                 printf("\n\nSignal %d received, preparing to exit...\n",
 509                                 signum);
 510                 force_quit = true;
 511         }
 512 }
 513
 514 int
 515 main(int argc, char **argv)
 516 {
 517         struct lcore_queue_conf *qconf;
 518         int ret;
 519         uint16_t nb_ports;
 520         uint16_t nb_ports_available;
 521         uint16_t portid, last_port;
 522         unsigned lcore_id, rx_lcore_id;
 523         unsigned nb_ports_in_mask = 0;
 524         unsigned int nb_lcores = 0;
 525         unsigned int nb_mbufs;
 526
 527         /* init EAL */
 528         ret = rte_eal_init(argc, argv);
 529         if (ret < 0)
 530                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 531         argc -= ret;
 532         argv += ret;
 533
 534         force_quit = false;
 535         signal(SIGINT, signal_handler);
 536         signal(SIGTERM, signal_handler);
 537
 538         /* parse application arguments (after the EAL ones) */
 539         ret = l2fwd_parse_args(argc, argv);
 540         if (ret < 0)
 541                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 542
 543         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 544
 545         /* convert to number of cycles */
 546         timer_period *= rte_get_timer_hz();
 547
 548         nb_ports = rte_eth_dev_count();
 549         if (nb_ports == 0)
 550                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 551
 552         /* check port mask to possible port mask */
 553         if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
 554                 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
 555                         (1 << nb_ports) - 1);
 556
 557         /* reset l2fwd_dst_ports */
 558         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 559                 l2fwd_dst_ports[portid] = 0;
 560         last_port = 0;
 561
 562         /*
 563          * Each logical core is assigned a dedicated TX queue on each port.
 564          */
 565         for (portid = 0; portid < nb_ports; portid++) {
 566                 /* skip ports that are not enabled */
 567                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 568                         continue;
 569
 570                 if (nb_ports_in_mask % 2) {
 571                         l2fwd_dst_ports[portid] = last_port;
 572                         l2fwd_dst_ports[last_port] = portid;
 573                 }
 574                 else
 575                         last_port = portid;
 576
 577                 nb_ports_in_mask++;
 578         }
 579         if (nb_ports_in_mask % 2) {
 580                 printf("Notice: odd number of ports in portmask.\n");
 581                 l2fwd_dst_ports[last_port] = last_port;
 582         }
 583
 584         rx_lcore_id = 0;
 585         qconf = NULL;
 586
 587         /* Initialize the port/queue configuration of each logical core */
 588         for (portid = 0; portid < nb_ports; portid++) {
 589                 /* skip ports that are not enabled */
 590                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 591                         continue;
 592
 593                 /* get the lcore_id for this port */
 594                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 595                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 596                        l2fwd_rx_queue_per_lcore) {
 597                         rx_lcore_id++;
 598                         if (rx_lcore_id >= RTE_MAX_LCORE)
 599                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 600                 }
 601
 602                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
 603                         /* Assigned a new logical core in the loop above. */
 604                         qconf = &lcore_queue_conf[rx_lcore_id];
 605                         nb_lcores++;
 606                 }
 607
 608                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 609                 qconf->n_rx_port++;
 610                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 611         }
 612
 613         nb_ports_available = nb_ports;
 614
 615         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 616                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 617
 618         /* create the mbuf pool */
 619         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 620                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 621                 rte_socket_id());
 622         if (l2fwd_pktmbuf_pool == NULL)
 623                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 624
 625         /* Initialise each port */
 626         for (portid = 0; portid < nb_ports; portid++) {
 627                 struct rte_eth_rxconf rxq_conf;
 628                 struct rte_eth_txconf txq_conf;
 629                 struct rte_eth_conf local_port_conf = port_conf;
 630                 struct rte_eth_dev_info dev_info;
 631
 632                 /* skip ports that are not enabled */
 633                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 634                         printf("Skipping disabled port %u\n", portid);
 635                         nb_ports_available--;
 636                         continue;
 637                 }
 638                 /* init port */
 639                 printf("Initializing port %u... ", portid);
 640                 fflush(stdout);
 641                 rte_eth_dev_info_get(portid, &dev_info);
 642                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 643                         local_port_conf.txmode.offloads |=
 644                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 645                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 646                 if (ret < 0)
 647                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 648                                   ret, portid);
 649
 650                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 651                                                        &nb_txd);
 652                 if (ret < 0)
 653                         rte_exit(EXIT_FAILURE,
 654                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 655                                  ret, portid);
 656
 657                 rte_eth_macaddr_get(portid,&l2fwd_ports_eth_addr[portid]);
 658
 659                 /* init one RX queue */
 660                 fflush(stdout);
 661                 rxq_conf = dev_info.default_rxconf;
 662                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 663                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 664                                              rte_eth_dev_socket_id(portid),
 665                                              &rxq_conf,
 666                                              l2fwd_pktmbuf_pool);
 667                 if (ret < 0)
 668                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 669                                   ret, portid);
 670
 671                 /* init one TX queue on each port */
 672                 fflush(stdout);
 673                 txq_conf = dev_info.default_txconf;
 674                 txq_conf.txq_flags = ETH_TXQ_FLAGS_IGNORE;
 675                 txq_conf.offloads = local_port_conf.txmode.offloads;
 676                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 677                                 rte_eth_dev_socket_id(portid),
 678                                 &txq_conf);
 679                 if (ret < 0)
 680                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 681                                 ret, portid);
 682
 683                 /* Initialize TX buffers */
 684                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 685                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 686                                 rte_eth_dev_socket_id(portid));
 687                 if (tx_buffer[portid] == NULL)
 688                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 689                                         portid);
 690
 691                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 692
 693                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 694                                 rte_eth_tx_buffer_count_callback,
 695                                 &port_statistics[portid].dropped);
 696                 if (ret < 0)
 697                         rte_exit(EXIT_FAILURE,
 698                         "Cannot set error callback for tx buffer on port %u\n",
 699                                  portid);
 700
 701                 /* Start device */
 702                 ret = rte_eth_dev_start(portid);
 703                 if (ret < 0)
 704                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 705                                   ret, portid);
 706
 707                 printf("done: \n");
 708
 709                 rte_eth_promiscuous_enable(portid);
 710
 711                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 712                                 portid,
 713                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 714                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 715                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 716                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 717                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 718                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 719
 720                 /* initialize port stats */
 721                 memset(&port_statistics, 0, sizeof(port_statistics));
 722         }
 723
 724         if (!nb_ports_available) {
 725                 rte_exit(EXIT_FAILURE,
 726                         "All available ports are disabled. Please set portmask.\n");
 727         }
 728
 729         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 730
 731         ret = 0;
 732         /* launch per-lcore init on every lcore */
 733         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 734         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 735                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 736                         ret = -1;
 737                         break;
 738                 }
 739         }
 740
 741         for (portid = 0; portid < nb_ports; portid++) {
 742                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 743                         continue;
 744                 printf("Closing port %d...", portid);
 745                 rte_eth_dev_stop(portid);
 746                 rte_eth_dev_close(portid);
 747                 printf(" Done\n");
 748         }
 749         printf("Bye...\n");
 750
 751         return ret;
 752 }