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_memzone.h>
  55 #include <rte_eal.h>
  56 #include <rte_launch.h>
  57 #include <rte_atomic.h>
  58 #include <rte_cycles.h>
  59 #include <rte_prefetch.h>
  60 #include <rte_lcore.h>
  61 #include <rte_per_lcore.h>
  62 #include <rte_branch_prediction.h>
  63 #include <rte_interrupts.h>
  64 #include <rte_pci.h>
  65 #include <rte_random.h>
  66 #include <rte_debug.h>
  67 #include <rte_ether.h>
  68 #include <rte_ethdev.h>
  69 #include <rte_mempool.h>
  70 #include <rte_mbuf.h>
  71 #include <rte_timer.h>
  72 #include <rte_keepalive.h>
  73
  74 #include "shm.h"
  75
  76 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  77
  78 #define NB_MBUF   8192
  79
  80 #define MAX_PKT_BURST 32
  81 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  82
  83 /*
  84  * Configurable number of RX/TX ring descriptors
  85  */
  86 #define RTE_TEST_RX_DESC_DEFAULT 128
  87 #define RTE_TEST_TX_DESC_DEFAULT 512
  88 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  89 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  90
  91 /* ethernet addresses of ports */
  92 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  93
  94 /* mask of enabled ports */
  95 static uint32_t l2fwd_enabled_port_mask;
  96
  97 /* list of enabled ports */
  98 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  99
 100 static unsigned int l2fwd_rx_queue_per_lcore = 1;
 101
 102 #define MAX_RX_QUEUE_PER_LCORE 16
 103 #define MAX_TX_QUEUE_PER_PORT 16
 104 struct lcore_queue_conf {
 105         unsigned n_rx_port;
 106         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 107 } __rte_cache_aligned;
 108 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 109
 110 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
 111
 112 static const struct rte_eth_conf port_conf = {
 113         .rxmode = {
 114                 .split_hdr_size = 0,
 115                 .header_split   = 0, /**< Header Split disabled */
 116                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 117                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 118                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 119                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
 120         },
 121         .txmode = {
 122                 .mq_mode = ETH_MQ_TX_NONE,
 123         },
 124 };
 125
 126 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 127
 128 /* Per-port statistics struct */
 129 struct l2fwd_port_statistics {
 130         uint64_t tx;
 131         uint64_t rx;
 132         uint64_t dropped;
 133 } __rte_cache_aligned;
 134 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 135
 136 /* A tsc-based timer responsible for triggering statistics printout */
 137 #define TIMER_MILLISECOND 1
 138 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 139 static int64_t timer_period = 10 * TIMER_MILLISECOND * 1000; /* 10 seconds */
 140 static int64_t check_period = 5; /* default check cycle is 5ms */
 141
 142 /* Keepalive structure */
 143 struct rte_keepalive *rte_global_keepalive_info;
 144
 145 /* Termination signalling */
 146 static int terminate_signal_received;
 147
 148 /* Termination signal handler */
 149 static void handle_sigterm(__rte_unused int value)
 150 {
 151         terminate_signal_received = 1;
 152 }
 153
 154 /* Print out statistics on packets dropped */
 155 static void
 156 print_stats(__attribute__((unused)) struct rte_timer *ptr_timer,
 157         __attribute__((unused)) void *ptr_data)
 158 {
 159         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 160         unsigned portid;
 161
 162         total_packets_dropped = 0;
 163         total_packets_tx = 0;
 164         total_packets_rx = 0;
 165
 166         const char clr[] = { 27, '[', '2', 'J', '\0' };
 167         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 168
 169                 /* Clear screen and move to top left */
 170         printf("%s%s", clr, topLeft);
 171
 172         printf("\nPort statistics ====================================");
 173
 174         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 175                 /* skip disabled ports */
 176                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 177                         continue;
 178                 printf("\nStatistics for port %u ------------------------------"
 179                            "\nPackets sent: %24"PRIu64
 180                            "\nPackets received: %20"PRIu64
 181                            "\nPackets dropped: %21"PRIu64,
 182                            portid,
 183                            port_statistics[portid].tx,
 184                            port_statistics[portid].rx,
 185                            port_statistics[portid].dropped);
 186
 187                 total_packets_dropped += port_statistics[portid].dropped;
 188                 total_packets_tx += port_statistics[portid].tx;
 189                 total_packets_rx += port_statistics[portid].rx;
 190         }
 191         printf("\nAggregate statistics ==============================="
 192                    "\nTotal packets sent: %18"PRIu64
 193                    "\nTotal packets received: %14"PRIu64
 194                    "\nTotal packets dropped: %15"PRIu64,
 195                    total_packets_tx,
 196                    total_packets_rx,
 197                    total_packets_dropped);
 198         printf("\n====================================================\n");
 199 }
 200
 201 static void
 202 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 203 {
 204         struct ether_hdr *eth;
 205         void *tmp;
 206         int sent;
 207         unsigned dst_port;
 208         struct rte_eth_dev_tx_buffer *buffer;
 209
 210         dst_port = l2fwd_dst_ports[portid];
 211         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 212
 213         /* 02:00:00:00:00:xx */
 214         tmp = &eth->d_addr.addr_bytes[0];
 215         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 216
 217         /* src addr */
 218         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 219
 220         buffer = tx_buffer[dst_port];
 221         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 222         if (sent)
 223                 port_statistics[dst_port].tx += sent;
 224 }
 225
 226 /* main processing loop */
 227 static void
 228 l2fwd_main_loop(void)
 229 {
 230         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 231         struct rte_mbuf *m;
 232         int sent;
 233         unsigned lcore_id;
 234         uint64_t prev_tsc, diff_tsc, cur_tsc;
 235         unsigned i, j, portid, nb_rx;
 236         struct lcore_queue_conf *qconf;
 237         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1)
 238                 / US_PER_S * BURST_TX_DRAIN_US;
 239         struct rte_eth_dev_tx_buffer *buffer;
 240
 241         prev_tsc = 0;
 242
 243         lcore_id = rte_lcore_id();
 244         qconf = &lcore_queue_conf[lcore_id];
 245
 246         if (qconf->n_rx_port == 0) {
 247                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 248                 return;
 249         }
 250
 251         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 252
 253         for (i = 0; i < qconf->n_rx_port; i++) {
 254
 255                 portid = qconf->rx_port_list[i];
 256                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 257                         portid);
 258         }
 259
 260         uint64_t tsc_initial = rte_rdtsc();
 261         uint64_t tsc_lifetime = (rand()&0x07) * rte_get_tsc_hz();
 262
 263         while (!terminate_signal_received) {
 264                 /* Keepalive heartbeat */
 265                 rte_keepalive_mark_alive(rte_global_keepalive_info);
 266
 267                 cur_tsc = rte_rdtsc();
 268
 269                 /*
 270                  * Die randomly within 7 secs for demo purposes if
 271                  * keepalive enabled
 272                  */
 273                 if (check_period > 0 && cur_tsc - tsc_initial > tsc_lifetime)
 274                         break;
 275
 276                 /*
 277                  * TX burst queue drain
 278                  */
 279                 diff_tsc = cur_tsc - prev_tsc;
 280                 if (unlikely(diff_tsc > drain_tsc)) {
 281
 282                         for (i = 0; i < qconf->n_rx_port; i++) {
 283
 284                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 285                                 buffer = tx_buffer[portid];
 286
 287                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 288                                 if (sent)
 289                                         port_statistics[portid].tx += sent;
 290
 291                         }
 292
 293                         prev_tsc = cur_tsc;
 294                 }
 295
 296                 /*
 297                  * Read packet from RX queues
 298                  */
 299                 for (i = 0; i < qconf->n_rx_port; i++) {
 300
 301                         portid = qconf->rx_port_list[i];
 302                         nb_rx = rte_eth_rx_burst((uint8_t) portid, 0,
 303                                                  pkts_burst, MAX_PKT_BURST);
 304
 305                         port_statistics[portid].rx += nb_rx;
 306
 307                         for (j = 0; j < nb_rx; j++) {
 308                                 m = pkts_burst[j];
 309                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 310                                 l2fwd_simple_forward(m, portid);
 311                         }
 312                 }
 313         }
 314 }
 315
 316 static int
 317 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 318 {
 319         l2fwd_main_loop();
 320         return 0;
 321 }
 322
 323 /* display usage */
 324 static void
 325 l2fwd_usage(const char *prgname)
 326 {
 327         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 328                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 329                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 330                "  -K PERIOD: Keepalive check period (5 default; 86400 max)\n"
 331                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n",
 332                prgname);
 333 }
 334
 335 static int
 336 l2fwd_parse_portmask(const char *portmask)
 337 {
 338         char *end = NULL;
 339         unsigned long pm;
 340
 341         /* parse hexadecimal string */
 342         pm = strtoul(portmask, &end, 16);
 343         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 344                 return -1;
 345
 346         if (pm == 0)
 347                 return -1;
 348
 349         return pm;
 350 }
 351
 352 static unsigned int
 353 l2fwd_parse_nqueue(const char *q_arg)
 354 {
 355         char *end = NULL;
 356         unsigned long n;
 357
 358         /* parse hexadecimal string */
 359         n = strtoul(q_arg, &end, 10);
 360         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 361                 return 0;
 362         if (n == 0)
 363                 return 0;
 364         if (n >= MAX_RX_QUEUE_PER_LCORE)
 365                 return 0;
 366
 367         return n;
 368 }
 369
 370 static int
 371 l2fwd_parse_timer_period(const char *q_arg)
 372 {
 373         char *end = NULL;
 374         int n;
 375
 376         /* parse number string */
 377         n = strtol(q_arg, &end, 10);
 378         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 379                 return -1;
 380         if (n >= MAX_TIMER_PERIOD)
 381                 return -1;
 382
 383         return n;
 384 }
 385
 386 static int
 387 l2fwd_parse_check_period(const char *q_arg)
 388 {
 389         char *end = NULL;
 390         int n;
 391
 392         /* parse number string */
 393         n = strtol(q_arg, &end, 10);
 394         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 395                 return -1;
 396         if (n >= MAX_TIMER_PERIOD)
 397                 return -1;
 398
 399         return n;
 400 }
 401
 402 /* Parse the argument given in the command line of the application */
 403 static int
 404 l2fwd_parse_args(int argc, char **argv)
 405 {
 406         int opt, ret;
 407         char **argvopt;
 408         int option_index;
 409         char *prgname = argv[0];
 410         static struct option lgopts[] = {
 411                 {NULL, 0, 0, 0}
 412         };
 413
 414         argvopt = argv;
 415
 416         while ((opt = getopt_long(argc, argvopt, "p:q:T:K:",
 417                                   lgopts, &option_index)) != EOF) {
 418
 419                 switch (opt) {
 420                 /* portmask */
 421                 case 'p':
 422                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 423                         if (l2fwd_enabled_port_mask == 0) {
 424                                 printf("invalid portmask\n");
 425                                 l2fwd_usage(prgname);
 426                                 return -1;
 427                         }
 428                         break;
 429
 430                 /* nqueue */
 431                 case 'q':
 432                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 433                         if (l2fwd_rx_queue_per_lcore == 0) {
 434                                 printf("invalid queue number\n");
 435                                 l2fwd_usage(prgname);
 436                                 return -1;
 437                         }
 438                         break;
 439
 440                 /* timer period */
 441                 case 'T':
 442                         timer_period = l2fwd_parse_timer_period(optarg)
 443                                 * (int64_t)(1000 * TIMER_MILLISECOND);
 444                         if (timer_period < 0) {
 445                                 printf("invalid timer period\n");
 446                                 l2fwd_usage(prgname);
 447                                 return -1;
 448                         }
 449                         break;
 450
 451                 /* Check period */
 452                 case 'K':
 453                         check_period = l2fwd_parse_check_period(optarg);
 454                         if (check_period < 0) {
 455                                 printf("invalid check period\n");
 456                                 l2fwd_usage(prgname);
 457                                 return -1;
 458                         }
 459                         break;
 460
 461                 /* long options */
 462                 case 0:
 463                         l2fwd_usage(prgname);
 464                         return -1;
 465
 466                 default:
 467                         l2fwd_usage(prgname);
 468                         return -1;
 469                 }
 470         }
 471
 472         if (optind >= 0)
 473                 argv[optind-1] = prgname;
 474
 475         ret = optind-1;
 476         optind = 1; /* reset getopt lib */
 477         return ret;
 478 }
 479
 480 /* Check the link status of all ports in up to 9s, and print them finally */
 481 static void
 482 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 483 {
 484 #define CHECK_INTERVAL 100 /* 100ms */
 485 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 486         uint8_t portid, 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("Port %d Link Up - speed %u "
 502                                                 "Mbps - %s\n", (uint8_t)portid,
 503                                                 (unsigned)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",
 508                                                 (uint8_t)portid);
 509                                 continue;
 510                         }
 511                         /* clear all_ports_up flag if any link down */
 512                         if (link.link_status == ETH_LINK_DOWN) {
 513                                 all_ports_up = 0;
 514                                 break;
 515                         }
 516                 }
 517                 /* after finally printing all link status, get out */
 518                 if (print_flag == 1)
 519                         break;
 520
 521                 if (all_ports_up == 0) {
 522                         printf(".");
 523                         fflush(stdout);
 524                         rte_delay_ms(CHECK_INTERVAL);
 525                 }
 526
 527                 /* set the print_flag if all ports up or timeout */
 528                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 529                         print_flag = 1;
 530                         printf("done\n");
 531                 }
 532         }
 533 }
 534
 535 static void
 536 dead_core(__rte_unused void *ptr_data, const int id_core)
 537 {
 538         if (terminate_signal_received)
 539                 return;
 540         printf("Dead core %i - restarting..\n", id_core);
 541         if (rte_eal_get_lcore_state(id_core) == FINISHED) {
 542                 rte_eal_wait_lcore(id_core);
 543                 rte_eal_remote_launch(l2fwd_launch_one_lcore, NULL, id_core);
 544         } else {
 545                 printf("..false positive!\n");
 546         }
 547 }
 548
 549 static void
 550 relay_core_state(void *ptr_data, const int id_core,
 551         const enum rte_keepalive_state core_state, uint64_t last_alive)
 552 {
 553         rte_keepalive_relayed_state((struct rte_keepalive_shm *)ptr_data,
 554                 id_core, core_state, last_alive);
 555 }
 556
 557 int
 558 main(int argc, char **argv)
 559 {
 560         struct lcore_queue_conf *qconf;
 561         struct rte_eth_dev_info dev_info;
 562         int ret;
 563         uint8_t nb_ports;
 564         uint8_t nb_ports_available;
 565         uint8_t portid, last_port;
 566         unsigned lcore_id, rx_lcore_id;
 567         unsigned nb_ports_in_mask = 0;
 568         struct sigaction signal_handler;
 569         struct rte_keepalive_shm *ka_shm;
 570
 571         memset(&signal_handler, 0, sizeof(signal_handler));
 572         terminate_signal_received = 0;
 573         signal_handler.sa_handler = &handle_sigterm;
 574         if (sigaction(SIGINT, &signal_handler, NULL) == -1 ||
 575                         sigaction(SIGTERM, &signal_handler, NULL) == -1)
 576                 rte_exit(EXIT_FAILURE, "SIGNAL\n");
 577
 578
 579         /* init EAL */
 580         ret = rte_eal_init(argc, argv);
 581         if (ret < 0)
 582                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 583         argc -= ret;
 584         argv += ret;
 585
 586         l2fwd_enabled_port_mask = 0;
 587
 588         /* parse application arguments (after the EAL ones) */
 589         ret = l2fwd_parse_args(argc, argv);
 590         if (ret < 0)
 591                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 592
 593         /* create the mbuf pool */
 594         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 595                 0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 596         if (l2fwd_pktmbuf_pool == NULL)
 597                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 598
 599         nb_ports = rte_eth_dev_count();
 600         if (nb_ports == 0)
 601                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 602
 603         /* reset l2fwd_dst_ports */
 604         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 605                 l2fwd_dst_ports[portid] = 0;
 606         last_port = 0;
 607
 608         /*
 609          * Each logical core is assigned a dedicated TX queue on each port.
 610          */
 611         for (portid = 0; portid < nb_ports; portid++) {
 612                 /* skip ports that are not enabled */
 613                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 614                         continue;
 615
 616                 if (nb_ports_in_mask % 2) {
 617                         l2fwd_dst_ports[portid] = last_port;
 618                         l2fwd_dst_ports[last_port] = portid;
 619                 } else
 620                         last_port = portid;
 621
 622                 nb_ports_in_mask++;
 623
 624                 rte_eth_dev_info_get(portid, &dev_info);
 625         }
 626         if (nb_ports_in_mask % 2) {
 627                 printf("Notice: odd number of ports in portmask.\n");
 628                 l2fwd_dst_ports[last_port] = last_port;
 629         }
 630
 631         rx_lcore_id = 1;
 632         qconf = NULL;
 633
 634         /* Initialize the port/queue configuration of each logical core */
 635         for (portid = 0; portid < nb_ports; portid++) {
 636                 /* skip ports that are not enabled */
 637                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 638                         continue;
 639
 640                 /* get the lcore_id for this port */
 641                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 642                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 643                        l2fwd_rx_queue_per_lcore) {
 644                         rx_lcore_id++;
 645                         if (rx_lcore_id >= RTE_MAX_LCORE)
 646                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 647                 }
 648
 649                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 650                         /* Assigned a new logical core in the loop above. */
 651                         qconf = &lcore_queue_conf[rx_lcore_id];
 652
 653                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 654                 qconf->n_rx_port++;
 655                 printf("Lcore %u: RX port %u\n",
 656                         rx_lcore_id, (unsigned) portid);
 657         }
 658
 659         nb_ports_available = nb_ports;
 660
 661         /* Initialise each port */
 662         for (portid = 0; portid < nb_ports; portid++) {
 663                 /* skip ports that are not enabled */
 664                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 665                         printf("Skipping disabled port %u\n",
 666                                 (unsigned) portid);
 667                         nb_ports_available--;
 668                         continue;
 669                 }
 670                 /* init port */
 671                 printf("Initializing port %u... ", (unsigned) portid);
 672                 fflush(stdout);
 673                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 674                 if (ret < 0)
 675                         rte_exit(EXIT_FAILURE,
 676                                 "Cannot configure device: err=%d, port=%u\n",
 677                                 ret, (unsigned) portid);
 678
 679                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 680                                                        &nb_txd);
 681                 if (ret < 0)
 682                         rte_exit(EXIT_FAILURE,
 683                                 "Cannot adjust number of descriptors: err=%d, port=%u\n",
 684                                 ret, (unsigned) portid);
 685
 686                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 687
 688                 /* init one RX queue */
 689                 fflush(stdout);
 690                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 691                                              rte_eth_dev_socket_id(portid),
 692                                              NULL,
 693                                              l2fwd_pktmbuf_pool);
 694                 if (ret < 0)
 695                         rte_exit(EXIT_FAILURE,
 696                                 "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 697                                 ret, (unsigned) portid);
 698
 699                 /* init one TX queue on each port */
 700                 fflush(stdout);
 701                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 702                                 rte_eth_dev_socket_id(portid),
 703                                 NULL);
 704                 if (ret < 0)
 705                         rte_exit(EXIT_FAILURE,
 706                                 "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 707                                 ret, (unsigned) portid);
 708
 709                 /* Initialize TX buffers */
 710                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 711                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 712                                 rte_eth_dev_socket_id(portid));
 713                 if (tx_buffer[portid] == NULL)
 714                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 715                                         (unsigned) portid);
 716
 717                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 718
 719                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 720                                 rte_eth_tx_buffer_count_callback,
 721                                 &port_statistics[portid].dropped);
 722                 if (ret < 0)
 723                                 rte_exit(EXIT_FAILURE, "Cannot set error callback for "
 724                                                 "tx buffer on port %u\n", (unsigned) portid);
 725
 726                 /* Start device */
 727                 ret = rte_eth_dev_start(portid);
 728                 if (ret < 0)
 729                         rte_exit(EXIT_FAILURE,
 730                                 "rte_eth_dev_start:err=%d, port=%u\n",
 731                                   ret, (unsigned) portid);
 732
 733                 rte_eth_promiscuous_enable(portid);
 734
 735                 printf("Port %u, MAC address: "
 736                         "%02X:%02X:%02X:%02X:%02X:%02X\n\n",
 737                         (unsigned) portid,
 738                         l2fwd_ports_eth_addr[portid].addr_bytes[0],
 739                         l2fwd_ports_eth_addr[portid].addr_bytes[1],
 740                         l2fwd_ports_eth_addr[portid].addr_bytes[2],
 741                         l2fwd_ports_eth_addr[portid].addr_bytes[3],
 742                         l2fwd_ports_eth_addr[portid].addr_bytes[4],
 743                         l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 744
 745                 /* initialize port stats */
 746                 memset(&port_statistics, 0, sizeof(port_statistics));
 747         }
 748
 749         if (!nb_ports_available) {
 750                 rte_exit(EXIT_FAILURE,
 751                         "All available ports are disabled. Please set portmask.\n");
 752         }
 753
 754         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 755
 756         struct rte_timer hb_timer, stats_timer;
 757
 758         rte_timer_subsystem_init();
 759         rte_timer_init(&stats_timer);
 760
 761         ka_shm = NULL;
 762         if (check_period > 0) {
 763                 ka_shm = rte_keepalive_shm_create();
 764                 if (ka_shm == NULL)
 765                         rte_exit(EXIT_FAILURE,
 766                                 "rte_keepalive_shm_create() failed");
 767                 rte_global_keepalive_info =
 768                         rte_keepalive_create(&dead_core, ka_shm);
 769                 if (rte_global_keepalive_info == NULL)
 770                         rte_exit(EXIT_FAILURE, "init_keep_alive() failed");
 771                 rte_keepalive_register_relay_callback(rte_global_keepalive_info,
 772                         relay_core_state, ka_shm);
 773                 rte_timer_init(&hb_timer);
 774                 if (rte_timer_reset(&hb_timer,
 775                                 (check_period * rte_get_timer_hz()) / 1000,
 776                                 PERIODICAL,
 777                                 rte_lcore_id(),
 778                                 (void(*)(struct rte_timer*, void*))
 779                                 &rte_keepalive_dispatch_pings,
 780                                 rte_global_keepalive_info
 781                                 ) != 0 )
 782                         rte_exit(EXIT_FAILURE, "Keepalive setup failure.\n");
 783         }
 784         if (timer_period > 0) {
 785                 if (rte_timer_reset(&stats_timer,
 786                                 (timer_period * rte_get_timer_hz()) / 1000,
 787                                 PERIODICAL,
 788                                 rte_lcore_id(),
 789                                 &print_stats, NULL
 790                                 ) != 0 )
 791                         rte_exit(EXIT_FAILURE, "Stats setup failure.\n");
 792         }
 793         /* launch per-lcore init on every slave lcore */
 794         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 795                 struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 796
 797                 if (qconf->n_rx_port == 0)
 798                         RTE_LOG(INFO, L2FWD,
 799                                 "lcore %u has nothing to do\n",
 800                                 lcore_id
 801                                 );
 802                 else {
 803                         rte_eal_remote_launch(
 804                                 l2fwd_launch_one_lcore,
 805                                 NULL,
 806                                 lcore_id
 807                                 );
 808                         rte_keepalive_register_core(rte_global_keepalive_info,
 809                                 lcore_id);
 810                 }
 811         }
 812         while (!terminate_signal_received) {
 813                 rte_timer_manage();
 814                 rte_delay_ms(5);
 815                 }
 816
 817         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 818                 if (rte_eal_wait_lcore(lcore_id) < 0)
 819                         return -1;
 820         }
 821
 822         if (ka_shm != NULL)
 823                 rte_keepalive_shm_cleanup(ka_shm);
 824         return 0;
 825 }