examples/l2fwd-keepalive/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2016 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 #include <signal.h>
  48
  49 #include <rte_common.h>
  50 #include <rte_log.h>
  51 #include <rte_malloc.h>
  52 #include <rte_memory.h>
  53 #include <rte_memcpy.h>
  54 #include <rte_eal.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_mempool.h>
  69 #include <rte_mbuf.h>
  70 #include <rte_timer.h>
  71 #include <rte_keepalive.h>
  72
  73 #include "shm.h"
  74
  75 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  76
  77 #define NB_MBUF   8192
  78
  79 #define MAX_PKT_BURST 32
  80 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  81
  82 /*
  83  * Configurable number of RX/TX ring descriptors
  84  */
  85 #define RTE_TEST_RX_DESC_DEFAULT 128
  86 #define RTE_TEST_TX_DESC_DEFAULT 512
  87 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  88 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  89
  90 /* ethernet addresses of ports */
  91 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  92
  93 /* mask of enabled ports */
  94 static uint32_t l2fwd_enabled_port_mask;
  95
  96 /* list of enabled ports */
  97 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  98
  99 static unsigned int l2fwd_rx_queue_per_lcore = 1;
 100
 101 #define MAX_RX_QUEUE_PER_LCORE 16
 102 #define MAX_TX_QUEUE_PER_PORT 16
 103 struct lcore_queue_conf {
 104         unsigned n_rx_port;
 105         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 106 } __rte_cache_aligned;
 107 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 108
 109 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
 110
 111 static const struct rte_eth_conf port_conf = {
 112         .rxmode = {
 113                 .split_hdr_size = 0,
 114                 .header_split   = 0, /**< Header Split disabled */
 115                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 116                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 117                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 118                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
 119         },
 120         .txmode = {
 121                 .mq_mode = ETH_MQ_TX_NONE,
 122         },
 123 };
 124
 125 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 126
 127 /* Per-port statistics struct */
 128 struct l2fwd_port_statistics {
 129         uint64_t tx;
 130         uint64_t rx;
 131         uint64_t dropped;
 132 } __rte_cache_aligned;
 133 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 134
 135 /* A tsc-based timer responsible for triggering statistics printout */
 136 #define TIMER_MILLISECOND 1
 137 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 138 static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* 10 seconds */
 139 static int64_t check_period = 5; /* default check cycle is 5ms */
 140
 141 /* Keepalive structure */
 142 struct rte_keepalive *rte_global_keepalive_info;
 143
 144 /* Termination signalling */
 145 static int terminate_signal_received;
 146
 147 /* Termination signal handler */
 148 static void handle_sigterm(__rte_unused int value)
 149 {
 150         terminate_signal_received = 1;
 151 }
 152
 153 /* Print out statistics on packets dropped */
 154 static void
 155 print_stats(__attribute__((unused)) struct rte_timer *ptr_timer,
 156         __attribute__((unused)) void *ptr_data)
 157 {
 158         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 159         uint16_t portid;
 160
 161         total_packets_dropped = 0;
 162         total_packets_tx = 0;
 163         total_packets_rx = 0;
 164
 165         const char clr[] = { 27, '[', '2', 'J', '\0' };
 166         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 167
 168                 /* Clear screen and move to top left */
 169         printf("%s%s", clr, topLeft);
 170
 171         printf("\nPort statistics ====================================");
 172
 173         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 174                 /* skip disabled ports */
 175                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 176                         continue;
 177                 printf("\nStatistics for port %u ------------------------------"
 178                            "\nPackets sent: %24"PRIu64
 179                            "\nPackets received: %20"PRIu64
 180                            "\nPackets dropped: %21"PRIu64,
 181                            portid,
 182                            port_statistics[portid].tx,
 183                            port_statistics[portid].rx,
 184                            port_statistics[portid].dropped);
 185
 186                 total_packets_dropped += port_statistics[portid].dropped;
 187                 total_packets_tx += port_statistics[portid].tx;
 188                 total_packets_rx += port_statistics[portid].rx;
 189         }
 190         printf("\nAggregate statistics ==============================="
 191                    "\nTotal packets sent: %18"PRIu64
 192                    "\nTotal packets received: %14"PRIu64
 193                    "\nTotal packets dropped: %15"PRIu64,
 194                    total_packets_tx,
 195                    total_packets_rx,
 196                    total_packets_dropped);
 197         printf("\n====================================================\n");
 198 }
 199
 200 static void
 201 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 202 {
 203         struct ether_hdr *eth;
 204         void *tmp;
 205         int sent;
 206         unsigned dst_port;
 207         struct rte_eth_dev_tx_buffer *buffer;
 208
 209         dst_port = l2fwd_dst_ports[portid];
 210         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 211
 212         /* 02:00:00:00:00:xx */
 213         tmp = &eth->d_addr.addr_bytes[0];
 214         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 215
 216         /* src addr */
 217         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 218
 219         buffer = tx_buffer[dst_port];
 220         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 221         if (sent)
 222                 port_statistics[dst_port].tx += sent;
 223 }
 224
 225 /* main processing loop */
 226 static void
 227 l2fwd_main_loop(void)
 228 {
 229         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 230         struct rte_mbuf *m;
 231         int sent;
 232         unsigned lcore_id;
 233         uint64_t prev_tsc, diff_tsc, cur_tsc;
 234         unsigned i, j, portid, nb_rx;
 235         struct lcore_queue_conf *qconf;
 236         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
 237                 / US_PER_S * BURST_TX_DRAIN_US;
 238         struct rte_eth_dev_tx_buffer *buffer;
 239
 240         prev_tsc = 0;
 241
 242         lcore_id = rte_lcore_id();
 243         qconf = &lcore_queue_conf[lcore_id];
 244
 245         if (qconf->n_rx_port == 0) {
 246                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 247                 return;
 248         }
 249
 250         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 251
 252         for (i = 0; i < qconf->n_rx_port; i++) {
 253
 254                 portid = qconf->rx_port_list[i];
 255                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 256                         portid);
 257         }
 258
 259         uint64_t tsc_initial = rte_rdtsc();
 260         uint64_t tsc_lifetime = (rand()&0x07) * rte_get_tsc_hz();
 261
 262         while (!terminate_signal_received) {
 263                 /* Keepalive heartbeat */
 264                 rte_keepalive_mark_alive(rte_global_keepalive_info);
 265
 266                 cur_tsc = rte_rdtsc();
 267
 268                 /*
 269                  * Die randomly within 7 secs for demo purposes if
 270                  * keepalive enabled
 271                  */
 272                 if (check_period > 0 && cur_tsc - tsc_initial > tsc_lifetime)
 273                         break;
 274
 275                 /*
 276                  * TX burst queue drain
 277                  */
 278                 diff_tsc = cur_tsc - prev_tsc;
 279                 if (unlikely(diff_tsc > drain_tsc)) {
 280
 281                         for (i = 0; i < qconf->n_rx_port; i++) {
 282
 283                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 284                                 buffer = tx_buffer[portid];
 285
 286                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 287                                 if (sent)
 288                                         port_statistics[portid].tx += sent;
 289
 290                         }
 291
 292                         prev_tsc = cur_tsc;
 293                 }
 294
 295                 /*
 296                  * Read packet from RX queues
 297                  */
 298                 for (i = 0; i < qconf->n_rx_port; i++) {
 299
 300                         portid = qconf->rx_port_list[i];
 301                         nb_rx = rte_eth_rx_burst(portid, 0,
 302                                                  pkts_burst, MAX_PKT_BURST);
 303
 304                         port_statistics[portid].rx += nb_rx;
 305
 306                         for (j = 0; j < nb_rx; j++) {
 307                                 m = pkts_burst[j];
 308                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 309                                 l2fwd_simple_forward(m, portid);
 310                         }
 311                 }
 312         }
 313 }
 314
 315 static int
 316 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 317 {
 318         l2fwd_main_loop();
 319         return 0;
 320 }
 321
 322 /* display usage */
 323 static void
 324 l2fwd_usage(const char *prgname)
 325 {
 326         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 327                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 328                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 329                "  -K PERIOD: Keepalive check period (5 default; 86400 max)\n"
 330                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
 331                prgname);
 332 }
 333
 334 static int
 335 l2fwd_parse_portmask(const char *portmask)
 336 {
 337         char *end = NULL;
 338         unsigned long pm;
 339
 340         /* parse hexadecimal string */
 341         pm = strtoul(portmask, &end, 16);
 342         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 343                 return -1;
 344
 345         if (pm == 0)
 346                 return -1;
 347
 348         return pm;
 349 }
 350
 351 static unsigned int
 352 l2fwd_parse_nqueue(const char *q_arg)
 353 {
 354         char *end = NULL;
 355         unsigned long n;
 356
 357         /* parse hexadecimal string */
 358         n = strtoul(q_arg, &end, 10);
 359         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 360                 return 0;
 361         if (n == 0)
 362                 return 0;
 363         if (n >= MAX_RX_QUEUE_PER_LCORE)
 364                 return 0;
 365
 366         return n;
 367 }
 368
 369 static int
 370 l2fwd_parse_timer_period(const char *q_arg)
 371 {
 372         char *end = NULL;
 373         int n;
 374
 375         /* parse number string */
 376         n = strtol(q_arg, &end, 10);
 377         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 378                 return -1;
 379         if (n >= MAX_TIMER_PERIOD)
 380                 return -1;
 381
 382         return n;
 383 }
 384
 385 static int
 386 l2fwd_parse_check_period(const char *q_arg)
 387 {
 388         char *end = NULL;
 389         int n;
 390
 391         /* parse number string */
 392         n = strtol(q_arg, &end, 10);
 393         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 394                 return -1;
 395         if (n >= MAX_TIMER_PERIOD)
 396                 return -1;
 397
 398         return n;
 399 }
 400
 401 /* Parse the argument given in the command line of the application */
 402 static int
 403 l2fwd_parse_args(int argc, char **argv)
 404 {
 405         int opt, ret;
 406         char **argvopt;
 407         int option_index;
 408         char *prgname = argv[0];
 409         static struct option lgopts[] = {
 410                 {NULL, 0, 0, 0}
 411         };
 412
 413         argvopt = argv;
 414
 415         while ((opt = getopt_long(argc, argvopt, "p:q:T:K:",
 416                                   lgopts, &option_index)) != EOF) {
 417
 418                 switch (opt) {
 419                 /* portmask */
 420                 case 'p':
 421                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 422                         if (l2fwd_enabled_port_mask == 0) {
 423                                 printf("invalid portmask\n");
 424                                 l2fwd_usage(prgname);
 425                                 return -1;
 426                         }
 427                         break;
 428
 429                 /* nqueue */
 430                 case 'q':
 431                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 432                         if (l2fwd_rx_queue_per_lcore == 0) {
 433                                 printf("invalid queue number\n");
 434                                 l2fwd_usage(prgname);
 435                                 return -1;
 436                         }
 437                         break;
 438
 439                 /* timer period */
 440                 case 'T':
 441                         timer_period = l2fwd_parse_timer_period(optarg)
 442                                 * (int64_t)(1000 * TIMER_MILLISECOND);
 443                         if (timer_period < 0) {
 444                                 printf("invalid timer period\n");
 445                                 l2fwd_usage(prgname);
 446                                 return -1;
 447                         }
 448                         break;
 449
 450                 /* Check period */
 451                 case 'K':
 452                         check_period = l2fwd_parse_check_period(optarg);
 453                         if (check_period < 0) {
 454                                 printf("invalid check period\n");
 455                                 l2fwd_usage(prgname);
 456                                 return -1;
 457                         }
 458                         break;
 459
 460                 /* long options */
 461                 case 0:
 462                         l2fwd_usage(prgname);
 463                         return -1;
 464
 465                 default:
 466                         l2fwd_usage(prgname);
 467                         return -1;
 468                 }
 469         }
 470
 471         if (optind >= 0)
 472                 argv[optind-1] = prgname;
 473
 474         ret = optind-1;
 475         optind = 1; /* reset getopt lib */
 476         return ret;
 477 }
 478
 479 /* Check the link status of all ports in up to 9s, and print them finally */
 480 static void
 481 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 482 {
 483 #define CHECK_INTERVAL 100 /* 100ms */
 484 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 485         uint16_t portid;
 486         uint8_t count, all_ports_up, print_flag = 0;
 487         struct rte_eth_link link;
 488
 489         printf("\nChecking link status");
 490         fflush(stdout);
 491         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 492                 all_ports_up = 1;
 493                 for (portid = 0; portid < port_num; portid++) {
 494                         if ((port_mask & (1 << portid)) == 0)
 495                                 continue;
 496                         memset(&link, 0, sizeof(link));
 497                         rte_eth_link_get_nowait(portid, &link);
 498                         /* print link status if flag set */
 499                         if (print_flag == 1) {
 500                                 if (link.link_status)
 501                                         printf(
 502                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 503                                                 portid, link.link_speed,
 504                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 505                                         ("full-duplex") : ("half-duplex\n"));
 506                                 else
 507                                         printf("Port %d Link Down\n", portid);
 508                                 continue;
 509                         }
 510                         /* clear all_ports_up flag if any link down */
 511                         if (link.link_status == ETH_LINK_DOWN) {
 512                                 all_ports_up = 0;
 513                                 break;
 514                         }
 515                 }
 516                 /* after finally printing all link status, get out */
 517                 if (print_flag == 1)
 518                         break;
 519
 520                 if (all_ports_up == 0) {
 521                         printf(".");
 522                         fflush(stdout);
 523                         rte_delay_ms(CHECK_INTERVAL);
 524                 }
 525
 526                 /* set the print_flag if all ports up or timeout */
 527                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 528                         print_flag = 1;
 529                         printf("done\n");
 530                 }
 531         }
 532 }
 533
 534 static void
 535 dead_core(__rte_unused void *ptr_data, const int id_core)
 536 {
 537         if (terminate_signal_received)
 538                 return;
 539         printf("Dead core %i - restarting..\n", id_core);
 540         if (rte_eal_get_lcore_state(id_core) == FINISHED) {
 541                 rte_eal_wait_lcore(id_core);
 542                 rte_eal_remote_launch(l2fwd_launch_one_lcore, NULL, id_core);
 543         } else {
 544                 printf("..false positive!\n");
 545         }
 546 }
 547
 548 static void
 549 relay_core_state(void *ptr_data, const int id_core,
 550         const enum rte_keepalive_state core_state, uint64_t last_alive)
 551 {
 552         rte_keepalive_relayed_state((struct rte_keepalive_shm *)ptr_data,
 553                 id_core, core_state, last_alive);
 554 }
 555
 556 int
 557 main(int argc, char **argv)
 558 {
 559         struct lcore_queue_conf *qconf;
 560         struct rte_eth_dev_info dev_info;
 561         int ret;
 562         uint16_t nb_ports;
 563         uint16_t nb_ports_available;
 564         uint16_t portid, last_port;
 565         unsigned lcore_id, rx_lcore_id;
 566         unsigned nb_ports_in_mask = 0;
 567         struct sigaction signal_handler;
 568         struct rte_keepalive_shm *ka_shm;
 569
 570         memset(&signal_handler, 0, sizeof(signal_handler));
 571         terminate_signal_received = 0;
 572         signal_handler.sa_handler = &handle_sigterm;
 573         if (sigaction(SIGINT, &signal_handler, NULL) == -1 ||
 574                         sigaction(SIGTERM, &signal_handler, NULL) == -1)
 575                 rte_exit(EXIT_FAILURE, "SIGNAL\n");
 576
 577
 578         /* init EAL */
 579         ret = rte_eal_init(argc, argv);
 580         if (ret < 0)
 581                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 582         argc -= ret;
 583         argv += ret;
 584
 585         l2fwd_enabled_port_mask = 0;
 586
 587         /* parse application arguments (after the EAL ones) */
 588         ret = l2fwd_parse_args(argc, argv);
 589         if (ret < 0)
 590                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 591
 592         /* create the mbuf pool */
 593         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 594                 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 595         if (l2fwd_pktmbuf_pool == NULL)
 596                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 597
 598         nb_ports = rte_eth_dev_count();
 599         if (nb_ports == 0)
 600                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 601
 602         /* reset l2fwd_dst_ports */
 603         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 604                 l2fwd_dst_ports[portid] = 0;
 605         last_port = 0;
 606
 607         /*
 608          * Each logical core is assigned a dedicated TX queue on each port.
 609          */
 610         for (portid = 0; portid < nb_ports; portid++) {
 611                 /* skip ports that are not enabled */
 612                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 613                         continue;
 614
 615                 if (nb_ports_in_mask % 2) {
 616                         l2fwd_dst_ports[portid] = last_port;
 617                         l2fwd_dst_ports[last_port] = portid;
 618                 } else
 619                         last_port = portid;
 620
 621                 nb_ports_in_mask++;
 622
 623                 rte_eth_dev_info_get(portid, &dev_info);
 624         }
 625         if (nb_ports_in_mask % 2) {
 626                 printf("Notice: odd number of ports in portmask.\n");
 627                 l2fwd_dst_ports[last_port] = last_port;
 628         }
 629
 630         rx_lcore_id = 1;
 631         qconf = NULL;
 632
 633         /* Initialize the port/queue configuration of each logical core */
 634         for (portid = 0; portid < nb_ports; portid++) {
 635                 /* skip ports that are not enabled */
 636                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 637                         continue;
 638
 639                 /* get the lcore_id for this port */
 640                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 641                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 642                        l2fwd_rx_queue_per_lcore) {
 643                         rx_lcore_id++;
 644                         if (rx_lcore_id >= RTE_MAX_LCORE)
 645                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 646                 }
 647
 648                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 649                         /* Assigned a new logical core in the loop above. */
 650                         qconf = &lcore_queue_conf[rx_lcore_id];
 651
 652                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 653                 qconf->n_rx_port++;
 654                 printf("Lcore %u: RX port %u\n",
 655                         rx_lcore_id, portid);
 656         }
 657
 658         nb_ports_available = nb_ports;
 659
 660         /* Initialise each port */
 661         for (portid = 0; portid < nb_ports; portid++) {
 662                 /* skip ports that are not enabled */
 663                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 664                         printf("Skipping disabled port %u\n", portid);
 665                         nb_ports_available--;
 666                         continue;
 667                 }
 668                 /* init port */
 669                 printf("Initializing port %u... ", portid);
 670                 fflush(stdout);
 671                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 672                 if (ret < 0)
 673                         rte_exit(EXIT_FAILURE,
 674                                 "Cannot configure device: err=%d, port=%u\n",
 675                                 ret, portid);
 676
 677                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 678                                                        &nb_txd);
 679                 if (ret < 0)
 680                         rte_exit(EXIT_FAILURE,
 681                                 "Cannot adjust number of descriptors: err=%d, port=%u\n",
 682                                 ret, portid);
 683
 684                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 685
 686                 /* init one RX queue */
 687                 fflush(stdout);
 688                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 689                                              rte_eth_dev_socket_id(portid),
 690                                              NULL,
 691                                              l2fwd_pktmbuf_pool);
 692                 if (ret < 0)
 693                         rte_exit(EXIT_FAILURE,
 694                                 "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 695                                 ret, portid);
 696
 697                 /* init one TX queue on each port */
 698                 fflush(stdout);
 699                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 700                                 rte_eth_dev_socket_id(portid),
 701                                 NULL);
 702                 if (ret < 0)
 703                         rte_exit(EXIT_FAILURE,
 704                                 "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 705                                 ret, portid);
 706
 707                 /* Initialize TX buffers */
 708                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 709                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 710                                 rte_eth_dev_socket_id(portid));
 711                 if (tx_buffer[portid] == NULL)
 712                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 713                                                 portid);
 714
 715                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 716
 717                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 718                                 rte_eth_tx_buffer_count_callback,
 719                                 &port_statistics[portid].dropped);
 720                 if (ret < 0)
 721                         rte_exit(EXIT_FAILURE,
 722                         "Cannot set error callback for tx buffer on port %u\n",
 723                                  portid);
 724
 725                 /* Start device */
 726                 ret = rte_eth_dev_start(portid);
 727                 if (ret < 0)
 728                         rte_exit(EXIT_FAILURE,
 729                                 "rte_eth_dev_start:err=%d, port=%u\n",
 730                                   ret, portid);
 731
 732                 rte_eth_promiscuous_enable(portid);
 733
 734                 printf("Port %u, MAC address: "
 735                         "%02X:%02X:%02X:%02X:%02X:%02X\n\n",
 736                         portid,
 737                         l2fwd_ports_eth_addr[portid].addr_bytes[0],
 738                         l2fwd_ports_eth_addr[portid].addr_bytes[1],
 739                         l2fwd_ports_eth_addr[portid].addr_bytes[2],
 740                         l2fwd_ports_eth_addr[portid].addr_bytes[3],
 741                         l2fwd_ports_eth_addr[portid].addr_bytes[4],
 742                         l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 743
 744                 /* initialize port stats */
 745                 memset(&port_statistics, 0, sizeof(port_statistics));
 746         }
 747
 748         if (!nb_ports_available) {
 749                 rte_exit(EXIT_FAILURE,
 750                         "All available ports are disabled. Please set portmask.\n");
 751         }
 752
 753         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 754
 755         struct rte_timer hb_timer, stats_timer;
 756
 757         rte_timer_subsystem_init();
 758         rte_timer_init(&stats_timer);
 759
 760         ka_shm = NULL;
 761         if (check_period > 0) {
 762                 ka_shm = rte_keepalive_shm_create();
 763                 if (ka_shm == NULL)
 764                         rte_exit(EXIT_FAILURE,
 765                                 "rte_keepalive_shm_create() failed");
 766                 rte_global_keepalive_info =
 767                         rte_keepalive_create(&dead_core, ka_shm);
 768                 if (rte_global_keepalive_info == NULL)
 769                         rte_exit(EXIT_FAILURE, "init_keep_alive() failed");
 770                 rte_keepalive_register_relay_callback(rte_global_keepalive_info,
 771                         relay_core_state, ka_shm);
 772                 rte_timer_init(&hb_timer);
 773                 if (rte_timer_reset(&hb_timer,
 774                                 (check_period * rte_get_timer_hz()) / 1000,
 775                                 PERIODICAL,
 776                                 rte_lcore_id(),
 777                                 (void(*)(struct rte_timer*, void*))
 778                                 &rte_keepalive_dispatch_pings,
 779                                 rte_global_keepalive_info
 780                                 ) != 0 )
 781                         rte_exit(EXIT_FAILURE, "Keepalive setup failure.\n");
 782         }
 783         if (timer_period > 0) {
 784                 if (rte_timer_reset(&stats_timer,
 785                                 (timer_period * rte_get_timer_hz()) / 1000,
 786                                 PERIODICAL,
 787                                 rte_lcore_id(),
 788                                 &print_stats, NULL
 789                                 ) != 0 )
 790                         rte_exit(EXIT_FAILURE, "Stats setup failure.\n");
 791         }
 792         /* launch per-lcore init on every slave lcore */
 793         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 794                 struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 795
 796                 if (qconf->n_rx_port == 0)
 797                         RTE_LOG(INFO, L2FWD,
 798                                 "lcore %u has nothing to do\n",
 799                                 lcore_id
 800                                 );
 801                 else {
 802                         rte_eal_remote_launch(
 803                                 l2fwd_launch_one_lcore,
 804                                 NULL,
 805                                 lcore_id
 806                                 );
 807                         rte_keepalive_register_core(rte_global_keepalive_info,
 808                                 lcore_id);
 809                 }
 810         }
 811         while (!terminate_signal_received) {
 812                 rte_timer_manage();
 813                 rte_delay_ms(5);
 814                 }
 815
 816         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 817                 if (rte_eal_wait_lcore(lcore_id) < 0)
 818                         return -1;
 819         }
 820
 821         if (ka_shm != NULL)
 822                 rte_keepalive_shm_cleanup(ka_shm);
 823         return 0;
 824 }