examples/l2fwd-keepalive/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 Intel Corporation. All rights reserved.
   5  *   All rights reserved.
   6  *
   7  *   Redistribution and use in source and binary forms, with or without
   8  *   modification, are permitted provided that the following conditions
   9  *   are met:
  10  *
  11  *     * Redistributions of source code must retain the above copyright
  12  *       notice, this list of conditions and the following disclaimer.
  13  *     * Redistributions in binary form must reproduce the above copyright
  14  *       notice, this list of conditions and the following disclaimer in
  15  *       the documentation and/or other materials provided with the
  16  *       distribution.
  17  *     * Neither the name of Intel Corporation nor the names of its
  18  *       contributors may be used to endorse or promote products derived
  19  *       from this software without specific prior written permission.
  20  *
  21  *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  22  *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  23  *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  24  *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  25  *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  26  *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  27  *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  28  *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  29  *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  30  *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  31  *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  32  */
  33
  34 #include <stdio.h>
  35 #include <stdlib.h>
  36 #include <string.h>
  37 #include <stdint.h>
  38 #include <inttypes.h>
  39 #include <sys/types.h>
  40 #include <sys/queue.h>
  41 #include <netinet/in.h>
  42 #include <setjmp.h>
  43 #include <stdarg.h>
  44 #include <ctype.h>
  45 #include <errno.h>
  46 #include <getopt.h>
  47
  48 #include <rte_common.h>
  49 #include <rte_log.h>
  50 #include <rte_memory.h>
  51 #include <rte_memcpy.h>
  52 #include <rte_memzone.h>
  53 #include <rte_eal.h>
  54 #include <rte_per_lcore.h>
  55 #include <rte_launch.h>
  56 #include <rte_atomic.h>
  57 #include <rte_cycles.h>
  58 #include <rte_prefetch.h>
  59 #include <rte_lcore.h>
  60 #include <rte_per_lcore.h>
  61 #include <rte_branch_prediction.h>
  62 #include <rte_interrupts.h>
  63 #include <rte_pci.h>
  64 #include <rte_random.h>
  65 #include <rte_debug.h>
  66 #include <rte_ether.h>
  67 #include <rte_ethdev.h>
  68 #include <rte_ring.h>
  69 #include <rte_mempool.h>
  70 #include <rte_mbuf.h>
  71 #include <rte_timer.h>
  72 #include <rte_keepalive.h>
  73
  74 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  75
  76 #define NB_MBUF   8192
  77
  78 #define MAX_PKT_BURST 32
  79 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  80
  81 /*
  82  * Configurable number of RX/TX ring descriptors
  83  */
  84 #define RTE_TEST_RX_DESC_DEFAULT 128
  85 #define RTE_TEST_TX_DESC_DEFAULT 512
  86 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  87 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  88
  89 /* ethernet addresses of ports */
  90 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  91
  92 /* mask of enabled ports */
  93 static uint32_t l2fwd_enabled_port_mask;
  94
  95 /* list of enabled ports */
  96 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  97
  98 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  99
 100 struct mbuf_table {
 101         unsigned len;
 102         struct rte_mbuf *m_table[MAX_PKT_BURST];
 103 };
 104
 105 #define MAX_RX_QUEUE_PER_LCORE 16
 106 #define MAX_TX_QUEUE_PER_PORT 16
 107 struct lcore_queue_conf {
 108         unsigned n_rx_port;
 109         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 110         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 111
 112 } __rte_cache_aligned;
 113 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 114
 115 static const struct rte_eth_conf port_conf = {
 116         .rxmode = {
 117                 .split_hdr_size = 0,
 118                 .header_split   = 0, /**< Header Split disabled */
 119                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 120                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 121                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 122                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 123         },
 124         .txmode = {
 125                 .mq_mode = ETH_MQ_TX_NONE,
 126         },
 127 };
 128
 129 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 130
 131 /* Per-port statistics struct */
 132 struct l2fwd_port_statistics {
 133         uint64_t tx;
 134         uint64_t rx;
 135         uint64_t dropped;
 136 } __rte_cache_aligned;
 137 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 138
 139 /* A tsc-based timer responsible for triggering statistics printout */
 140 #define TIMER_MILLISECOND 1
 141 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 142 static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* 10 seconds */
 143 static int64_t check_period = 5; /* default check cycle is 5ms */
 144
 145 /* Keepalive structure */
 146 struct rte_keepalive *rte_global_keepalive_info;
 147
 148 /* Print out statistics on packets dropped */
 149 static void
 150 print_stats(__attribute__((unused)) struct rte_timer *ptr_timer,
 151         __attribute__((unused)) void *ptr_data)
 152 {
 153         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 154         unsigned portid;
 155
 156         total_packets_dropped = 0;
 157         total_packets_tx = 0;
 158         total_packets_rx = 0;
 159
 160         const char clr[] = { 27, '[', '2', 'J', '\0' };
 161         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 162
 163                 /* Clear screen and move to top left */
 164         printf("%s%s", clr, topLeft);
 165
 166         printf("\nPort statistics ====================================");
 167
 168         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 169                 /* skip disabled ports */
 170                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 171                         continue;
 172                 printf("\nStatistics for port %u ------------------------------"
 173                            "\nPackets sent: %24"PRIu64
 174                            "\nPackets received: %20"PRIu64
 175                            "\nPackets dropped: %21"PRIu64,
 176                            portid,
 177                            port_statistics[portid].tx,
 178                            port_statistics[portid].rx,
 179                            port_statistics[portid].dropped);
 180
 181                 total_packets_dropped += port_statistics[portid].dropped;
 182                 total_packets_tx += port_statistics[portid].tx;
 183                 total_packets_rx += port_statistics[portid].rx;
 184         }
 185         printf("\nAggregate statistics ==============================="
 186                    "\nTotal packets sent: %18"PRIu64
 187                    "\nTotal packets received: %14"PRIu64
 188                    "\nTotal packets dropped: %15"PRIu64,
 189                    total_packets_tx,
 190                    total_packets_rx,
 191                    total_packets_dropped);
 192         printf("\n====================================================\n");
 193 }
 194
 195 /* Send the burst of packets on an output interface */
 196 static int
 197 l2fwd_send_burst(struct lcore_queue_conf *qconf, unsigned n, uint8_t port)
 198 {
 199         struct rte_mbuf **m_table;
 200         unsigned ret;
 201         unsigned queueid = 0;
 202
 203         m_table = (struct rte_mbuf **)qconf->tx_mbufs[port].m_table;
 204
 205         ret = rte_eth_tx_burst(port, (uint16_t) queueid, m_table, (uint16_t) n);
 206         port_statistics[port].tx += ret;
 207         if (unlikely(ret < n)) {
 208                 port_statistics[port].dropped += (n - ret);
 209                 do {
 210                         rte_pktmbuf_free(m_table[ret]);
 211                 } while (++ret < n);
 212         }
 213
 214         return 0;
 215 }
 216
 217 /* Enqueue packets for TX and prepare them to be sent */
 218 static int
 219 l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
 220 {
 221         unsigned lcore_id, len;
 222         struct lcore_queue_conf *qconf;
 223
 224         lcore_id = rte_lcore_id();
 225
 226         qconf = &lcore_queue_conf[lcore_id];
 227         len = qconf->tx_mbufs[port].len;
 228         qconf->tx_mbufs[port].m_table[len] = m;
 229         len++;
 230
 231         /* enough pkts to be sent */
 232         if (unlikely(len == MAX_PKT_BURST)) {
 233                 l2fwd_send_burst(qconf, MAX_PKT_BURST, port);
 234                 len = 0;
 235         }
 236
 237         qconf->tx_mbufs[port].len = len;
 238         return 0;
 239 }
 240
 241 static void
 242 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 243 {
 244         struct ether_hdr *eth;
 245         void *tmp;
 246         unsigned dst_port;
 247
 248         dst_port = l2fwd_dst_ports[portid];
 249         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 250
 251         /* 02:00:00:00:00:xx */
 252         tmp = &eth->d_addr.addr_bytes[0];
 253         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 254
 255         /* src addr */
 256         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 257
 258         l2fwd_send_packet(m, (uint8_t) dst_port);
 259 }
 260
 261 /* main processing loop */
 262 static void
 263 l2fwd_main_loop(void)
 264 {
 265         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 266         struct rte_mbuf *m;
 267         unsigned lcore_id;
 268         uint64_t prev_tsc, diff_tsc, cur_tsc;
 269         unsigned i, j, portid, nb_rx;
 270         struct lcore_queue_conf *qconf;
 271         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
 272                 / US_PER_S * BURST_TX_DRAIN_US;
 273
 274         prev_tsc = 0;
 275
 276         lcore_id = rte_lcore_id();
 277         qconf = &lcore_queue_conf[lcore_id];
 278
 279         if (qconf->n_rx_port == 0) {
 280                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 281                 return;
 282         }
 283
 284         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 285
 286         for (i = 0; i < qconf->n_rx_port; i++) {
 287
 288                 portid = qconf->rx_port_list[i];
 289                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 290                         portid);
 291         }
 292
 293         uint64_t tsc_initial = rte_rdtsc();
 294         uint64_t tsc_lifetime = (rand()&0x07) * rte_get_tsc_hz();
 295
 296         while (1) {
 297                 /* Keepalive heartbeat */
 298                 rte_keepalive_mark_alive(rte_global_keepalive_info);
 299
 300                 cur_tsc = rte_rdtsc();
 301
 302                 /*
 303                  * Die randomly within 7 secs for demo purposes if
 304                  * keepalive enabled
 305                  */
 306                 if (check_period > 0 && cur_tsc - tsc_initial > tsc_lifetime)
 307                         break;
 308
 309                 /*
 310                  * TX burst queue drain
 311                  */
 312                 diff_tsc = cur_tsc - prev_tsc;
 313                 if (unlikely(diff_tsc > drain_tsc)) {
 314
 315                         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 316                                 if (qconf->tx_mbufs[portid].len == 0)
 317                                         continue;
 318                                 l2fwd_send_burst(&lcore_queue_conf[lcore_id],
 319                                                  qconf->tx_mbufs[portid].len,
 320                                                  (uint8_t) portid);
 321                                 qconf->tx_mbufs[portid].len = 0;
 322                         }
 323
 324                         prev_tsc = cur_tsc;
 325                 }
 326
 327                 /*
 328                  * Read packet from RX queues
 329                  */
 330                 for (i = 0; i < qconf->n_rx_port; i++) {
 331
 332                         portid = qconf->rx_port_list[i];
 333                         nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
 334                                                  pkts_burst, MAX_PKT_BURST);
 335
 336                         port_statistics[portid].rx += nb_rx;
 337
 338                         for (j = 0; j < nb_rx; j++) {
 339                                 m = pkts_burst[j];
 340                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 341                                 l2fwd_simple_forward(m, portid);
 342                         }
 343                 }
 344         }
 345 }
 346
 347 static int
 348 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 349 {
 350         l2fwd_main_loop();
 351         return 0;
 352 }
 353
 354 /* display usage */
 355 static void
 356 l2fwd_usage(const char *prgname)
 357 {
 358         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 359                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 360                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 361                "  -K PERIOD: Keepalive check period (5 default; 86400 max)\n"
 362                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
 363                prgname);
 364 }
 365
 366 static int
 367 l2fwd_parse_portmask(const char *portmask)
 368 {
 369         char *end = NULL;
 370         unsigned long pm;
 371
 372         /* parse hexadecimal string */
 373         pm = strtoul(portmask, &end, 16);
 374         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 375                 return -1;
 376
 377         if (pm == 0)
 378                 return -1;
 379
 380         return pm;
 381 }
 382
 383 static unsigned int
 384 l2fwd_parse_nqueue(const char *q_arg)
 385 {
 386         char *end = NULL;
 387         unsigned long n;
 388
 389         /* parse hexadecimal string */
 390         n = strtoul(q_arg, &end, 10);
 391         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 392                 return 0;
 393         if (n == 0)
 394                 return 0;
 395         if (n >= MAX_RX_QUEUE_PER_LCORE)
 396                 return 0;
 397
 398         return n;
 399 }
 400
 401 static int
 402 l2fwd_parse_timer_period(const char *q_arg)
 403 {
 404         char *end = NULL;
 405         int n;
 406
 407         /* parse number string */
 408         n = strtol(q_arg, &end, 10);
 409         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 410                 return -1;
 411         if (n >= MAX_TIMER_PERIOD)
 412                 return -1;
 413
 414         return n;
 415 }
 416
 417 static int
 418 l2fwd_parse_check_period(const char *q_arg)
 419 {
 420         char *end = NULL;
 421         int n;
 422
 423         /* parse number string */
 424         n = strtol(q_arg, &end, 10);
 425         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 426                 return -1;
 427         if (n >= MAX_TIMER_PERIOD)
 428                 return -1;
 429
 430         return n;
 431 }
 432
 433 /* Parse the argument given in the command line of the application */
 434 static int
 435 l2fwd_parse_args(int argc, char **argv)
 436 {
 437         int opt, ret;
 438         char **argvopt;
 439         int option_index;
 440         char *prgname = argv[0];
 441         static struct option lgopts[] = {
 442                 {NULL, 0, 0, 0}
 443         };
 444
 445         argvopt = argv;
 446
 447         while ((opt = getopt_long(argc, argvopt, "p:q:T:K:",
 448                                   lgopts, &option_index)) != EOF) {
 449
 450                 switch (opt) {
 451                 /* portmask */
 452                 case 'p':
 453                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 454                         if (l2fwd_enabled_port_mask == 0) {
 455                                 printf("invalid portmask\n");
 456                                 l2fwd_usage(prgname);
 457                                 return -1;
 458                         }
 459                         break;
 460
 461                 /* nqueue */
 462                 case 'q':
 463                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 464                         if (l2fwd_rx_queue_per_lcore == 0) {
 465                                 printf("invalid queue number\n");
 466                                 l2fwd_usage(prgname);
 467                                 return -1;
 468                         }
 469                         break;
 470
 471                 /* timer period */
 472                 case 'T':
 473                         timer_period = l2fwd_parse_timer_period(optarg)
 474                                 * 1000 * TIMER_MILLISECOND;
 475                         if (timer_period < 0) {
 476                                 printf("invalid timer period\n");
 477                                 l2fwd_usage(prgname);
 478                                 return -1;
 479                         }
 480                         break;
 481
 482                 /* Check period */
 483                 case 'K':
 484                         check_period = l2fwd_parse_check_period(optarg);
 485                         if (check_period < 0) {
 486                                 printf("invalid check period\n");
 487                                 l2fwd_usage(prgname);
 488                                 return -1;
 489                         }
 490                         break;
 491
 492                 /* long options */
 493                 case 0:
 494                         l2fwd_usage(prgname);
 495                         return -1;
 496
 497                 default:
 498                         l2fwd_usage(prgname);
 499                         return -1;
 500                 }
 501         }
 502
 503         if (optind >= 0)
 504                 argv[optind-1] = prgname;
 505
 506         ret = optind-1;
 507         optind = 0; /* reset getopt lib */
 508         return ret;
 509 }
 510
 511 /* Check the link status of all ports in up to 9s, and print them finally */
 512 static void
 513 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 514 {
 515 #define CHECK_INTERVAL 100 /* 100ms */
 516 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 517         uint8_t portid, count, all_ports_up, print_flag = 0;
 518         struct rte_eth_link link;
 519
 520         printf("\nChecking link status");
 521         fflush(stdout);
 522         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 523                 all_ports_up = 1;
 524                 for (portid = 0; portid < port_num; portid++) {
 525                         if ((port_mask & (1 << portid)) == 0)
 526                                 continue;
 527                         memset(&link, 0, sizeof(link));
 528                         rte_eth_link_get_nowait(portid, &link);
 529                         /* print link status if flag set */
 530                         if (print_flag == 1) {
 531                                 if (link.link_status)
 532                                         printf("Port %d Link Up - speed %u "
 533                                                 "Mbps - %s\n", (uint8_t)portid,
 534                                                 (unsigned)link.link_speed,
 535                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 536                                         ("full-duplex") : ("half-duplex\n"));
 537                                 else
 538                                         printf("Port %d Link Down\n",
 539                                                 (uint8_t)portid);
 540                                 continue;
 541                         }
 542                         /* clear all_ports_up flag if any link down */
 543                         if (link.link_status == 0) {
 544                                 all_ports_up = 0;
 545                                 break;
 546                         }
 547                 }
 548                 /* after finally printing all link status, get out */
 549                 if (print_flag == 1)
 550                         break;
 551
 552                 if (all_ports_up == 0) {
 553                         printf(".");
 554                         fflush(stdout);
 555                         rte_delay_ms(CHECK_INTERVAL);
 556                 }
 557
 558                 /* set the print_flag if all ports up or timeout */
 559                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 560                         print_flag = 1;
 561                         printf("done\n");
 562                 }
 563         }
 564 }
 565
 566 static void
 567 dead_core(__attribute__((unused)) void *ptr_data, const int id_core)
 568 {
 569         printf("Dead core %i - restarting..\n", id_core);
 570         if (rte_eal_get_lcore_state(id_core) == FINISHED) {
 571                 rte_eal_wait_lcore(id_core);
 572                 rte_eal_remote_launch(l2fwd_launch_one_lcore, NULL, id_core);
 573         } else {
 574                 printf("..false positive!\n");
 575         }
 576 }
 577
 578 int
 579 main(int argc, char **argv)
 580 {
 581         struct lcore_queue_conf *qconf;
 582         struct rte_eth_dev_info dev_info;
 583         int ret;
 584         uint8_t nb_ports;
 585         uint8_t nb_ports_available;
 586         uint8_t portid, last_port;
 587         unsigned lcore_id, rx_lcore_id;
 588         unsigned nb_ports_in_mask = 0;
 589
 590         /* init EAL */
 591         ret = rte_eal_init(argc, argv);
 592         if (ret < 0)
 593                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 594         argc -= ret;
 595         argv += ret;
 596
 597         l2fwd_enabled_port_mask = 0;
 598
 599         /* parse application arguments (after the EAL ones) */
 600         ret = l2fwd_parse_args(argc, argv);
 601         if (ret < 0)
 602                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 603
 604         /* create the mbuf pool */
 605         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 606                 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 607         if (l2fwd_pktmbuf_pool == NULL)
 608                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 609
 610         nb_ports = rte_eth_dev_count();
 611         if (nb_ports == 0)
 612                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 613
 614         if (nb_ports > RTE_MAX_ETHPORTS)
 615                 nb_ports = RTE_MAX_ETHPORTS;
 616
 617         /* reset l2fwd_dst_ports */
 618         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 619                 l2fwd_dst_ports[portid] = 0;
 620         last_port = 0;
 621
 622         /*
 623          * Each logical core is assigned a dedicated TX queue on each port.
 624          */
 625         for (portid = 0; portid < nb_ports; portid++) {
 626                 /* skip ports that are not enabled */
 627                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 628                         continue;
 629
 630                 if (nb_ports_in_mask % 2) {
 631                         l2fwd_dst_ports[portid] = last_port;
 632                         l2fwd_dst_ports[last_port] = portid;
 633                 } else
 634                         last_port = portid;
 635
 636                 nb_ports_in_mask++;
 637
 638                 rte_eth_dev_info_get(portid, &dev_info);
 639         }
 640         if (nb_ports_in_mask % 2) {
 641                 printf("Notice: odd number of ports in portmask.\n");
 642                 l2fwd_dst_ports[last_port] = last_port;
 643         }
 644
 645         rx_lcore_id = 1;
 646         qconf = NULL;
 647
 648         /* Initialize the port/queue configuration of each logical core */
 649         for (portid = 0; portid < nb_ports; portid++) {
 650                 /* skip ports that are not enabled */
 651                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 652                         continue;
 653
 654                 /* get the lcore_id for this port */
 655                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 656                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 657                        l2fwd_rx_queue_per_lcore) {
 658                         rx_lcore_id++;
 659                         if (rx_lcore_id >= RTE_MAX_LCORE)
 660                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 661                 }
 662
 663                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 664                         /* Assigned a new logical core in the loop above. */
 665                         qconf = &lcore_queue_conf[rx_lcore_id];
 666
 667                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 668                 qconf->n_rx_port++;
 669                 printf("Lcore %u: RX port %u\n",
 670                         rx_lcore_id, (unsigned) portid);
 671         }
 672
 673         nb_ports_available = nb_ports;
 674
 675         /* Initialise each port */
 676         for (portid = 0; portid < nb_ports; portid++) {
 677                 /* skip ports that are not enabled */
 678                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 679                         printf("Skipping disabled port %u\n",
 680                                 (unsigned) portid);
 681                         nb_ports_available--;
 682                         continue;
 683                 }
 684                 /* init port */
 685                 printf("Initializing port %u... ", (unsigned) portid);
 686                 fflush(stdout);
 687                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 688                 if (ret < 0)
 689                         rte_exit(EXIT_FAILURE,
 690                                 "Cannot configure device: err=%d, port=%u\n",
 691                                 ret, (unsigned) portid);
 692
 693                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 694
 695                 /* init one RX queue */
 696                 fflush(stdout);
 697                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 698                                              rte_eth_dev_socket_id(portid),
 699                                              NULL,
 700                                              l2fwd_pktmbuf_pool);
 701                 if (ret < 0)
 702                         rte_exit(EXIT_FAILURE,
 703                                 "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 704                                 ret, (unsigned) portid);
 705
 706                 /* init one TX queue on each port */
 707                 fflush(stdout);
 708                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 709                                 rte_eth_dev_socket_id(portid),
 710                                 NULL);
 711                 if (ret < 0)
 712                         rte_exit(EXIT_FAILURE,
 713                                 "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 714                                 ret, (unsigned) portid);
 715
 716                 /* Start device */
 717                 ret = rte_eth_dev_start(portid);
 718                 if (ret < 0)
 719                         rte_exit(EXIT_FAILURE,
 720                                 "rte_eth_dev_start:err=%d, port=%u\n",
 721                                   ret, (unsigned) portid);
 722
 723                 rte_eth_promiscuous_enable(portid);
 724
 725                 printf("Port %u, MAC address: "
 726                         "%02X:%02X:%02X:%02X:%02X:%02X\n\n",
 727                         (unsigned) portid,
 728                         l2fwd_ports_eth_addr[portid].addr_bytes[0],
 729                         l2fwd_ports_eth_addr[portid].addr_bytes[1],
 730                         l2fwd_ports_eth_addr[portid].addr_bytes[2],
 731                         l2fwd_ports_eth_addr[portid].addr_bytes[3],
 732                         l2fwd_ports_eth_addr[portid].addr_bytes[4],
 733                         l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 734
 735                 /* initialize port stats */
 736                 memset(&port_statistics, 0, sizeof(port_statistics));
 737         }
 738
 739         if (!nb_ports_available) {
 740                 rte_exit(EXIT_FAILURE,
 741                         "All available ports are disabled. Please set portmask.\n");
 742         }
 743
 744         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 745
 746         struct rte_timer hb_timer, stats_timer;
 747
 748         rte_timer_subsystem_init();
 749         rte_timer_init(&stats_timer);
 750
 751         if (check_period > 0) {
 752                 rte_global_keepalive_info =
 753                         rte_keepalive_create(&dead_core, NULL);
 754                 if (rte_global_keepalive_info == NULL)
 755                         rte_exit(EXIT_FAILURE, "init_keep_alive() failed");
 756                 rte_timer_init(&hb_timer);
 757                 if (rte_timer_reset(&hb_timer,
 758                                 (check_period * rte_get_timer_hz()) / 1000,
 759                                 PERIODICAL,
 760                                 rte_lcore_id(),
 761                                 (void(*)(struct rte_timer*, void*))
 762                                 &rte_keepalive_dispatch_pings,
 763                                 rte_global_keepalive_info
 764                                 ) != 0 )
 765                         rte_exit(EXIT_FAILURE, "Keepalive setup failure.\n");
 766         }
 767         if (timer_period > 0) {
 768                 if (rte_timer_reset(&stats_timer,
 769                                 (timer_period * rte_get_timer_hz()) / 1000,
 770                                 PERIODICAL,
 771                                 rte_lcore_id(),
 772                                 &print_stats, NULL
 773                                 ) != 0 )
 774                         rte_exit(EXIT_FAILURE, "Stats setup failure.\n");
 775         }
 776         /* launch per-lcore init on every slave lcore */
 777         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 778                 struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 779
 780                 if (qconf->n_rx_port == 0)
 781                         RTE_LOG(INFO, L2FWD,
 782                                 "lcore %u has nothing to do\n",
 783                                 lcore_id
 784                                 );
 785                 else {
 786                         rte_eal_remote_launch(
 787                                 l2fwd_launch_one_lcore,
 788                                 NULL,
 789                                 lcore_id
 790                                 );
 791                         rte_keepalive_register_core(rte_global_keepalive_info,
 792                                 lcore_id);
 793                 }
 794         }
 795         for (;;) {
 796                 rte_timer_manage();
 797                 rte_delay_ms(5);
 798                 }
 799
 800         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 801                 if (rte_eal_wait_lcore(lcore_id) < 0)
 802                         return -1;
 803         }
 804
 805         return 0;
 806 }