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