examples/l2fwd/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <stdint.h>
   9 #include <inttypes.h>
  10 #include <sys/types.h>
  11 #include <sys/queue.h>
  12 #include <setjmp.h>
  13 #include <stdarg.h>
  14 #include <ctype.h>
  15 #include <errno.h>
  16 #include <getopt.h>
  17 #include <signal.h>
  18 #include <stdbool.h>
  19
  20 #include <rte_common.h>
  21 #include <rte_log.h>
  22 #include <rte_malloc.h>
  23 #include <rte_memory.h>
  24 #include <rte_memcpy.h>
  25 #include <rte_eal.h>
  26 #include <rte_launch.h>
  27 #include <rte_atomic.h>
  28 #include <rte_cycles.h>
  29 #include <rte_prefetch.h>
  30 #include <rte_lcore.h>
  31 #include <rte_per_lcore.h>
  32 #include <rte_branch_prediction.h>
  33 #include <rte_interrupts.h>
  34 #include <rte_random.h>
  35 #include <rte_debug.h>
  36 #include <rte_ether.h>
  37 #include <rte_ethdev.h>
  38 #include <rte_mempool.h>
  39 #include <rte_mbuf.h>
  40 #include <rte_string_fns.h>
  41
  42 static volatile bool force_quit;
  43
  44 /* MAC updating enabled by default */
  45 static int mac_updating = 1;
  46
  47 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  48
  49 #define MAX_PKT_BURST 32
  50 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  51 #define MEMPOOL_CACHE_SIZE 256
  52
  53 /*
  54  * Configurable number of RX/TX ring descriptors
  55  */
  56 #define RTE_TEST_RX_DESC_DEFAULT 1024
  57 #define RTE_TEST_TX_DESC_DEFAULT 1024
  58 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  59 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  60
  61 /* ethernet addresses of ports */
  62 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  63
  64 /* mask of enabled ports */
  65 static uint32_t l2fwd_enabled_port_mask = 0;
  66
  67 /* list of enabled ports */
  68 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  69
  70 struct port_pair_params {
  71 #define NUM_PORTS       2
  72         uint16_t port[NUM_PORTS];
  73 } __rte_cache_aligned;
  74
  75 static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2];
  76 static struct port_pair_params *port_pair_params;
  77 static uint16_t nb_port_pair_params;
  78
  79 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  80
  81 #define MAX_RX_QUEUE_PER_LCORE 16
  82 #define MAX_TX_QUEUE_PER_PORT 16
  83 struct lcore_queue_conf {
  84         unsigned n_rx_port;
  85         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  86 } __rte_cache_aligned;
  87 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  88
  89 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  90
  91 static struct rte_eth_conf port_conf = {
  92         .rxmode = {
  93                 .split_hdr_size = 0,
  94         },
  95         .txmode = {
  96                 .mq_mode = ETH_MQ_TX_NONE,
  97         },
  98 };
  99
 100 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
 101
 102 /* Per-port statistics struct */
 103 struct l2fwd_port_statistics {
 104         uint64_t tx;
 105         uint64_t rx;
 106         uint64_t dropped;
 107 } __rte_cache_aligned;
 108 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 109
 110 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 111 /* A tsc-based timer responsible for triggering statistics printout */
 112 static uint64_t timer_period = 10; /* default period is 10 seconds */
 113
 114 /* Print out statistics on packets dropped */
 115 static void
 116 print_stats(void)
 117 {
 118         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 119         unsigned portid;
 120
 121         total_packets_dropped = 0;
 122         total_packets_tx = 0;
 123         total_packets_rx = 0;
 124
 125         const char clr[] = { 27, '[', '2', 'J', '\0' };
 126         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 127
 128                 /* Clear screen and move to top left */
 129         printf("%s%s", clr, topLeft);
 130
 131         printf("\nPort statistics ====================================");
 132
 133         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 134                 /* skip disabled ports */
 135                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 136                         continue;
 137                 printf("\nStatistics for port %u ------------------------------"
 138                            "\nPackets sent: %24"PRIu64
 139                            "\nPackets received: %20"PRIu64
 140                            "\nPackets dropped: %21"PRIu64,
 141                            portid,
 142                            port_statistics[portid].tx,
 143                            port_statistics[portid].rx,
 144                            port_statistics[portid].dropped);
 145
 146                 total_packets_dropped += port_statistics[portid].dropped;
 147                 total_packets_tx += port_statistics[portid].tx;
 148                 total_packets_rx += port_statistics[portid].rx;
 149         }
 150         printf("\nAggregate statistics ==============================="
 151                    "\nTotal packets sent: %18"PRIu64
 152                    "\nTotal packets received: %14"PRIu64
 153                    "\nTotal packets dropped: %15"PRIu64,
 154                    total_packets_tx,
 155                    total_packets_rx,
 156                    total_packets_dropped);
 157         printf("\n====================================================\n");
 158
 159         fflush(stdout);
 160 }
 161
 162 static void
 163 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 164 {
 165         struct rte_ether_hdr *eth;
 166         void *tmp;
 167
 168         eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 169
 170         /* 02:00:00:00:00:xx */
 171         tmp = &eth->d_addr.addr_bytes[0];
 172         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 173
 174         /* src addr */
 175         rte_ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 176 }
 177
 178 static void
 179 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 180 {
 181         unsigned dst_port;
 182         int sent;
 183         struct rte_eth_dev_tx_buffer *buffer;
 184
 185         dst_port = l2fwd_dst_ports[portid];
 186
 187         if (mac_updating)
 188                 l2fwd_mac_updating(m, dst_port);
 189
 190         buffer = tx_buffer[dst_port];
 191         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 192         if (sent)
 193                 port_statistics[dst_port].tx += sent;
 194 }
 195
 196 /* main processing loop */
 197 static void
 198 l2fwd_main_loop(void)
 199 {
 200         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 201         struct rte_mbuf *m;
 202         int sent;
 203         unsigned lcore_id;
 204         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 205         unsigned i, j, portid, nb_rx;
 206         struct lcore_queue_conf *qconf;
 207         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 208                         BURST_TX_DRAIN_US;
 209         struct rte_eth_dev_tx_buffer *buffer;
 210
 211         prev_tsc = 0;
 212         timer_tsc = 0;
 213
 214         lcore_id = rte_lcore_id();
 215         qconf = &lcore_queue_conf[lcore_id];
 216
 217         if (qconf->n_rx_port == 0) {
 218                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 219                 return;
 220         }
 221
 222         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 223
 224         for (i = 0; i < qconf->n_rx_port; i++) {
 225
 226                 portid = qconf->rx_port_list[i];
 227                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 228                         portid);
 229
 230         }
 231
 232         while (!force_quit) {
 233
 234                 cur_tsc = rte_rdtsc();
 235
 236                 /*
 237                  * TX burst queue drain
 238                  */
 239                 diff_tsc = cur_tsc - prev_tsc;
 240                 if (unlikely(diff_tsc > drain_tsc)) {
 241
 242                         for (i = 0; i < qconf->n_rx_port; i++) {
 243
 244                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 245                                 buffer = tx_buffer[portid];
 246
 247                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 248                                 if (sent)
 249                                         port_statistics[portid].tx += sent;
 250
 251                         }
 252
 253                         /* if timer is enabled */
 254                         if (timer_period > 0) {
 255
 256                                 /* advance the timer */
 257                                 timer_tsc += diff_tsc;
 258
 259                                 /* if timer has reached its timeout */
 260                                 if (unlikely(timer_tsc >= timer_period)) {
 261
 262                                         /* do this only on main core */
 263                                         if (lcore_id == rte_get_main_lcore()) {
 264                                                 print_stats();
 265                                                 /* reset the timer */
 266                                                 timer_tsc = 0;
 267                                         }
 268                                 }
 269                         }
 270
 271                         prev_tsc = cur_tsc;
 272                 }
 273
 274                 /*
 275                  * Read packet from RX queues
 276                  */
 277                 for (i = 0; i < qconf->n_rx_port; i++) {
 278
 279                         portid = qconf->rx_port_list[i];
 280                         nb_rx = rte_eth_rx_burst(portid, 0,
 281                                                  pkts_burst, MAX_PKT_BURST);
 282
 283                         port_statistics[portid].rx += nb_rx;
 284
 285                         for (j = 0; j < nb_rx; j++) {
 286                                 m = pkts_burst[j];
 287                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 288                                 l2fwd_simple_forward(m, portid);
 289                         }
 290                 }
 291         }
 292 }
 293
 294 static int
 295 l2fwd_launch_one_lcore(__rte_unused void *dummy)
 296 {
 297         l2fwd_main_loop();
 298         return 0;
 299 }
 300
 301 /* display usage */
 302 static void
 303 l2fwd_usage(const char *prgname)
 304 {
 305         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 306                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 307                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 308                "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 309                "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 310                "      When enabled:\n"
 311                "       - The source MAC address is replaced by the TX port MAC address\n"
 312                "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n"
 313                "  --portmap: Configure forwarding port pair mapping\n"
 314                "              Default: alternate port pairs\n\n",
 315                prgname);
 316 }
 317
 318 static int
 319 l2fwd_parse_portmask(const char *portmask)
 320 {
 321         char *end = NULL;
 322         unsigned long pm;
 323
 324         /* parse hexadecimal string */
 325         pm = strtoul(portmask, &end, 16);
 326         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 327                 return 0;
 328
 329         return pm;
 330 }
 331
 332 static int
 333 l2fwd_parse_port_pair_config(const char *q_arg)
 334 {
 335         enum fieldnames {
 336                 FLD_PORT1 = 0,
 337                 FLD_PORT2,
 338                 _NUM_FLD
 339         };
 340         unsigned long int_fld[_NUM_FLD];
 341         const char *p, *p0 = q_arg;
 342         char *str_fld[_NUM_FLD];
 343         unsigned int size;
 344         char s[256];
 345         char *end;
 346         int i;
 347
 348         nb_port_pair_params = 0;
 349
 350         while ((p = strchr(p0, '(')) != NULL) {
 351                 ++p;
 352                 p0 = strchr(p, ')');
 353                 if (p0 == NULL)
 354                         return -1;
 355
 356                 size = p0 - p;
 357                 if (size >= sizeof(s))
 358                         return -1;
 359
 360                 memcpy(s, p, size);
 361                 s[size] = '\0';
 362                 if (rte_strsplit(s, sizeof(s), str_fld,
 363                                  _NUM_FLD, ',') != _NUM_FLD)
 364                         return -1;
 365                 for (i = 0; i < _NUM_FLD; i++) {
 366                         errno = 0;
 367                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 368                         if (errno != 0 || end == str_fld[i] ||
 369                             int_fld[i] >= RTE_MAX_ETHPORTS)
 370                                 return -1;
 371                 }
 372                 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) {
 373                         printf("exceeded max number of port pair params: %hu\n",
 374                                 nb_port_pair_params);
 375                         return -1;
 376                 }
 377                 port_pair_params_array[nb_port_pair_params].port[0] =
 378                                 (uint16_t)int_fld[FLD_PORT1];
 379                 port_pair_params_array[nb_port_pair_params].port[1] =
 380                                 (uint16_t)int_fld[FLD_PORT2];
 381                 ++nb_port_pair_params;
 382         }
 383         port_pair_params = port_pair_params_array;
 384         return 0;
 385 }
 386
 387 static unsigned int
 388 l2fwd_parse_nqueue(const char *q_arg)
 389 {
 390         char *end = NULL;
 391         unsigned long n;
 392
 393         /* parse hexadecimal string */
 394         n = strtoul(q_arg, &end, 10);
 395         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 396                 return 0;
 397         if (n == 0)
 398                 return 0;
 399         if (n >= MAX_RX_QUEUE_PER_LCORE)
 400                 return 0;
 401
 402         return n;
 403 }
 404
 405 static int
 406 l2fwd_parse_timer_period(const char *q_arg)
 407 {
 408         char *end = NULL;
 409         int n;
 410
 411         /* parse number string */
 412         n = strtol(q_arg, &end, 10);
 413         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 414                 return -1;
 415         if (n >= MAX_TIMER_PERIOD)
 416                 return -1;
 417
 418         return n;
 419 }
 420
 421 static const char short_options[] =
 422         "p:"  /* portmask */
 423         "q:"  /* number of queues */
 424         "T:"  /* timer period */
 425         ;
 426
 427 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 428 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 429 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap"
 430
 431 enum {
 432         /* long options mapped to a short option */
 433
 434         /* first long only option value must be >= 256, so that we won't
 435          * conflict with short options */
 436         CMD_LINE_OPT_MIN_NUM = 256,
 437         CMD_LINE_OPT_PORTMAP_NUM,
 438 };
 439
 440 static const struct option lgopts[] = {
 441         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 442         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 443         { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM},
 444         {NULL, 0, 0, 0}
 445 };
 446
 447 /* Parse the argument given in the command line of the application */
 448 static int
 449 l2fwd_parse_args(int argc, char **argv)
 450 {
 451         int opt, ret, timer_secs;
 452         char **argvopt;
 453         int option_index;
 454         char *prgname = argv[0];
 455
 456         argvopt = argv;
 457         port_pair_params = NULL;
 458
 459         while ((opt = getopt_long(argc, argvopt, short_options,
 460                                   lgopts, &option_index)) != EOF) {
 461
 462                 switch (opt) {
 463                 /* portmask */
 464                 case 'p':
 465                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 466                         if (l2fwd_enabled_port_mask == 0) {
 467                                 printf("invalid portmask\n");
 468                                 l2fwd_usage(prgname);
 469                                 return -1;
 470                         }
 471                         break;
 472
 473                 /* nqueue */
 474                 case 'q':
 475                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 476                         if (l2fwd_rx_queue_per_lcore == 0) {
 477                                 printf("invalid queue number\n");
 478                                 l2fwd_usage(prgname);
 479                                 return -1;
 480                         }
 481                         break;
 482
 483                 /* timer period */
 484                 case 'T':
 485                         timer_secs = l2fwd_parse_timer_period(optarg);
 486                         if (timer_secs < 0) {
 487                                 printf("invalid timer period\n");
 488                                 l2fwd_usage(prgname);
 489                                 return -1;
 490                         }
 491                         timer_period = timer_secs;
 492                         break;
 493
 494                 /* long options */
 495                 case CMD_LINE_OPT_PORTMAP_NUM:
 496                         ret = l2fwd_parse_port_pair_config(optarg);
 497                         if (ret) {
 498                                 fprintf(stderr, "Invalid config\n");
 499                                 l2fwd_usage(prgname);
 500                                 return -1;
 501                         }
 502                         break;
 503
 504                 default:
 505                         l2fwd_usage(prgname);
 506                         return -1;
 507                 }
 508         }
 509
 510         if (optind >= 0)
 511                 argv[optind-1] = prgname;
 512
 513         ret = optind-1;
 514         optind = 1; /* reset getopt lib */
 515         return ret;
 516 }
 517
 518 /*
 519  * Check port pair config with enabled port mask,
 520  * and for valid port pair combinations.
 521  */
 522 static int
 523 check_port_pair_config(void)
 524 {
 525         uint32_t port_pair_config_mask = 0;
 526         uint32_t port_pair_mask = 0;
 527         uint16_t index, i, portid;
 528
 529         for (index = 0; index < nb_port_pair_params; index++) {
 530                 port_pair_mask = 0;
 531
 532                 for (i = 0; i < NUM_PORTS; i++)  {
 533                         portid = port_pair_params[index].port[i];
 534                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 535                                 printf("port %u is not enabled in port mask\n",
 536                                        portid);
 537                                 return -1;
 538                         }
 539                         if (!rte_eth_dev_is_valid_port(portid)) {
 540                                 printf("port %u is not present on the board\n",
 541                                        portid);
 542                                 return -1;
 543                         }
 544
 545                         port_pair_mask |= 1 << portid;
 546                 }
 547
 548                 if (port_pair_config_mask & port_pair_mask) {
 549                         printf("port %u is used in other port pairs\n", portid);
 550                         return -1;
 551                 }
 552                 port_pair_config_mask |= port_pair_mask;
 553         }
 554
 555         l2fwd_enabled_port_mask &= port_pair_config_mask;
 556
 557         return 0;
 558 }
 559
 560 /* Check the link status of all ports in up to 9s, and print them finally */
 561 static void
 562 check_all_ports_link_status(uint32_t port_mask)
 563 {
 564 #define CHECK_INTERVAL 100 /* 100ms */
 565 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 566         uint16_t portid;
 567         uint8_t count, all_ports_up, print_flag = 0;
 568         struct rte_eth_link link;
 569         int ret;
 570         char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
 571
 572         printf("\nChecking link status");
 573         fflush(stdout);
 574         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 575                 if (force_quit)
 576                         return;
 577                 all_ports_up = 1;
 578                 RTE_ETH_FOREACH_DEV(portid) {
 579                         if (force_quit)
 580                                 return;
 581                         if ((port_mask & (1 << portid)) == 0)
 582                                 continue;
 583                         memset(&link, 0, sizeof(link));
 584                         ret = rte_eth_link_get_nowait(portid, &link);
 585                         if (ret < 0) {
 586                                 all_ports_up = 0;
 587                                 if (print_flag == 1)
 588                                         printf("Port %u link get failed: %s\n",
 589                                                 portid, rte_strerror(-ret));
 590                                 continue;
 591                         }
 592                         /* print link status if flag set */
 593                         if (print_flag == 1) {
 594                                 rte_eth_link_to_str(link_status_text,
 595                                         sizeof(link_status_text), &link);
 596                                 printf("Port %d %s\n", portid,
 597                                        link_status_text);
 598                                 continue;
 599                         }
 600                         /* clear all_ports_up flag if any link down */
 601                         if (link.link_status == ETH_LINK_DOWN) {
 602                                 all_ports_up = 0;
 603                                 break;
 604                         }
 605                 }
 606                 /* after finally printing all link status, get out */
 607                 if (print_flag == 1)
 608                         break;
 609
 610                 if (all_ports_up == 0) {
 611                         printf(".");
 612                         fflush(stdout);
 613                         rte_delay_ms(CHECK_INTERVAL);
 614                 }
 615
 616                 /* set the print_flag if all ports up or timeout */
 617                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 618                         print_flag = 1;
 619                         printf("done\n");
 620                 }
 621         }
 622 }
 623
 624 static void
 625 signal_handler(int signum)
 626 {
 627         if (signum == SIGINT || signum == SIGTERM) {
 628                 printf("\n\nSignal %d received, preparing to exit...\n",
 629                                 signum);
 630                 force_quit = true;
 631         }
 632 }
 633
 634 int
 635 main(int argc, char **argv)
 636 {
 637         struct lcore_queue_conf *qconf;
 638         int ret;
 639         uint16_t nb_ports;
 640         uint16_t nb_ports_available = 0;
 641         uint16_t portid, last_port;
 642         unsigned lcore_id, rx_lcore_id;
 643         unsigned nb_ports_in_mask = 0;
 644         unsigned int nb_lcores = 0;
 645         unsigned int nb_mbufs;
 646
 647         /* init EAL */
 648         ret = rte_eal_init(argc, argv);
 649         if (ret < 0)
 650                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 651         argc -= ret;
 652         argv += ret;
 653
 654         force_quit = false;
 655         signal(SIGINT, signal_handler);
 656         signal(SIGTERM, signal_handler);
 657
 658         /* parse application arguments (after the EAL ones) */
 659         ret = l2fwd_parse_args(argc, argv);
 660         if (ret < 0)
 661                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 662
 663         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 664
 665         /* convert to number of cycles */
 666         timer_period *= rte_get_timer_hz();
 667
 668         nb_ports = rte_eth_dev_count_avail();
 669         if (nb_ports == 0)
 670                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 671
 672         if (port_pair_params != NULL) {
 673                 if (check_port_pair_config() < 0)
 674                         rte_exit(EXIT_FAILURE, "Invalid port pair config\n");
 675         }
 676
 677         /* check port mask to possible port mask */
 678         if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
 679                 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
 680                         (1 << nb_ports) - 1);
 681
 682         /* reset l2fwd_dst_ports */
 683         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 684                 l2fwd_dst_ports[portid] = 0;
 685         last_port = 0;
 686
 687         /* populate destination port details */
 688         if (port_pair_params != NULL) {
 689                 uint16_t idx, p;
 690
 691                 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) {
 692                         p = idx & 1;
 693                         portid = port_pair_params[idx >> 1].port[p];
 694                         l2fwd_dst_ports[portid] =
 695                                 port_pair_params[idx >> 1].port[p ^ 1];
 696                 }
 697         } else {
 698                 RTE_ETH_FOREACH_DEV(portid) {
 699                         /* skip ports that are not enabled */
 700                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 701                                 continue;
 702
 703                         if (nb_ports_in_mask % 2) {
 704                                 l2fwd_dst_ports[portid] = last_port;
 705                                 l2fwd_dst_ports[last_port] = portid;
 706                         } else {
 707                                 last_port = portid;
 708                         }
 709
 710                         nb_ports_in_mask++;
 711                 }
 712                 if (nb_ports_in_mask % 2) {
 713                         printf("Notice: odd number of ports in portmask.\n");
 714                         l2fwd_dst_ports[last_port] = last_port;
 715                 }
 716         }
 717
 718         rx_lcore_id = 0;
 719         qconf = NULL;
 720
 721         /* Initialize the port/queue configuration of each logical core */
 722         RTE_ETH_FOREACH_DEV(portid) {
 723                 /* skip ports that are not enabled */
 724                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 725                         continue;
 726
 727                 /* get the lcore_id for this port */
 728                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 729                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 730                        l2fwd_rx_queue_per_lcore) {
 731                         rx_lcore_id++;
 732                         if (rx_lcore_id >= RTE_MAX_LCORE)
 733                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 734                 }
 735
 736                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
 737                         /* Assigned a new logical core in the loop above. */
 738                         qconf = &lcore_queue_conf[rx_lcore_id];
 739                         nb_lcores++;
 740                 }
 741
 742                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 743                 qconf->n_rx_port++;
 744                 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id,
 745                        portid, l2fwd_dst_ports[portid]);
 746         }
 747
 748         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 749                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 750
 751         /* create the mbuf pool */
 752         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 753                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 754                 rte_socket_id());
 755         if (l2fwd_pktmbuf_pool == NULL)
 756                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 757
 758         /* Initialise each port */
 759         RTE_ETH_FOREACH_DEV(portid) {
 760                 struct rte_eth_rxconf rxq_conf;
 761                 struct rte_eth_txconf txq_conf;
 762                 struct rte_eth_conf local_port_conf = port_conf;
 763                 struct rte_eth_dev_info dev_info;
 764
 765                 /* skip ports that are not enabled */
 766                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 767                         printf("Skipping disabled port %u\n", portid);
 768                         continue;
 769                 }
 770                 nb_ports_available++;
 771
 772                 /* init port */
 773                 printf("Initializing port %u... ", portid);
 774                 fflush(stdout);
 775
 776                 ret = rte_eth_dev_info_get(portid, &dev_info);
 777                 if (ret != 0)
 778                         rte_exit(EXIT_FAILURE,
 779                                 "Error during getting device (port %u) info: %s\n",
 780                                 portid, strerror(-ret));
 781
 782                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 783                         local_port_conf.txmode.offloads |=
 784                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 785                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 786                 if (ret < 0)
 787                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 788                                   ret, portid);
 789
 790                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 791                                                        &nb_txd);
 792                 if (ret < 0)
 793                         rte_exit(EXIT_FAILURE,
 794                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 795                                  ret, portid);
 796
 797                 ret = rte_eth_macaddr_get(portid,
 798                                           &l2fwd_ports_eth_addr[portid]);
 799                 if (ret < 0)
 800                         rte_exit(EXIT_FAILURE,
 801                                  "Cannot get MAC address: err=%d, port=%u\n",
 802                                  ret, portid);
 803
 804                 /* init one RX queue */
 805                 fflush(stdout);
 806                 rxq_conf = dev_info.default_rxconf;
 807                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 808                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 809                                              rte_eth_dev_socket_id(portid),
 810                                              &rxq_conf,
 811                                              l2fwd_pktmbuf_pool);
 812                 if (ret < 0)
 813                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 814                                   ret, portid);
 815
 816                 /* init one TX queue on each port */
 817                 fflush(stdout);
 818                 txq_conf = dev_info.default_txconf;
 819                 txq_conf.offloads = local_port_conf.txmode.offloads;
 820                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 821                                 rte_eth_dev_socket_id(portid),
 822                                 &txq_conf);
 823                 if (ret < 0)
 824                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 825                                 ret, portid);
 826
 827                 /* Initialize TX buffers */
 828                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 829                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 830                                 rte_eth_dev_socket_id(portid));
 831                 if (tx_buffer[portid] == NULL)
 832                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 833                                         portid);
 834
 835                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 836
 837                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 838                                 rte_eth_tx_buffer_count_callback,
 839                                 &port_statistics[portid].dropped);
 840                 if (ret < 0)
 841                         rte_exit(EXIT_FAILURE,
 842                         "Cannot set error callback for tx buffer on port %u\n",
 843                                  portid);
 844
 845                 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL,
 846                                              0);
 847                 if (ret < 0)
 848                         printf("Port %u, Failed to disable Ptype parsing\n",
 849                                         portid);
 850                 /* Start device */
 851                 ret = rte_eth_dev_start(portid);
 852                 if (ret < 0)
 853                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 854                                   ret, portid);
 855
 856                 printf("done: \n");
 857
 858                 ret = rte_eth_promiscuous_enable(portid);
 859                 if (ret != 0)
 860                         rte_exit(EXIT_FAILURE,
 861                                  "rte_eth_promiscuous_enable:err=%s, port=%u\n",
 862                                  rte_strerror(-ret), portid);
 863
 864                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 865                                 portid,
 866                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 867                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 868                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 869                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 870                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 871                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 872
 873                 /* initialize port stats */
 874                 memset(&port_statistics, 0, sizeof(port_statistics));
 875         }
 876
 877         if (!nb_ports_available) {
 878                 rte_exit(EXIT_FAILURE,
 879                         "All available ports are disabled. Please set portmask.\n");
 880         }
 881
 882         check_all_ports_link_status(l2fwd_enabled_port_mask);
 883
 884         ret = 0;
 885         /* launch per-lcore init on every lcore */
 886         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN);
 887         RTE_LCORE_FOREACH_WORKER(lcore_id) {
 888                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 889                         ret = -1;
 890                         break;
 891                 }
 892         }
 893
 894         RTE_ETH_FOREACH_DEV(portid) {
 895                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 896                         continue;
 897                 printf("Closing port %d...", portid);
 898                 ret = rte_eth_dev_stop(portid);
 899                 if (ret != 0)
 900                         printf("rte_eth_dev_stop: err=%d, port=%d\n",
 901                                ret, portid);
 902                 rte_eth_dev_close(portid);
 903                 printf(" Done\n");
 904         }
 905
 906         /* clean up the EAL */
 907         rte_eal_cleanup();
 908         printf("Bye...\n");
 909
 910         return ret;
 911 }