examples/l2fwd/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation
   3  */
   4
   5 #include <stdio.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <stdint.h>
   9 #include <inttypes.h>
  10 #include <sys/types.h>
  11 #include <sys/queue.h>
  12 #include <netinet/in.h>
  13 #include <setjmp.h>
  14 #include <stdarg.h>
  15 #include <ctype.h>
  16 #include <errno.h>
  17 #include <getopt.h>
  18 #include <signal.h>
  19 #include <stdbool.h>
  20
  21 #include <rte_common.h>
  22 #include <rte_log.h>
  23 #include <rte_malloc.h>
  24 #include <rte_memory.h>
  25 #include <rte_memcpy.h>
  26 #include <rte_eal.h>
  27 #include <rte_launch.h>
  28 #include <rte_atomic.h>
  29 #include <rte_cycles.h>
  30 #include <rte_prefetch.h>
  31 #include <rte_lcore.h>
  32 #include <rte_per_lcore.h>
  33 #include <rte_branch_prediction.h>
  34 #include <rte_interrupts.h>
  35 #include <rte_random.h>
  36 #include <rte_debug.h>
  37 #include <rte_ether.h>
  38 #include <rte_ethdev.h>
  39 #include <rte_mempool.h>
  40 #include <rte_mbuf.h>
  41 #include <rte_string_fns.h>
  42
  43 static volatile bool force_quit;
  44
  45 /* MAC updating enabled by default */
  46 static int mac_updating = 1;
  47
  48 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  49
  50 #define MAX_PKT_BURST 32
  51 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  52 #define MEMPOOL_CACHE_SIZE 256
  53
  54 /*
  55  * Configurable number of RX/TX ring descriptors
  56  */
  57 #define RTE_TEST_RX_DESC_DEFAULT 1024
  58 #define RTE_TEST_TX_DESC_DEFAULT 1024
  59 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  60 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  61
  62 /* ethernet addresses of ports */
  63 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  64
  65 /* mask of enabled ports */
  66 static uint32_t l2fwd_enabled_port_mask = 0;
  67
  68 /* list of enabled ports */
  69 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  70
  71 struct port_pair_params {
  72 #define NUM_PORTS       2
  73         uint16_t port[NUM_PORTS];
  74 } __rte_cache_aligned;
  75
  76 static struct port_pair_params port_pair_params_array[RTE_MAX_ETHPORTS / 2];
  77 static struct port_pair_params *port_pair_params;
  78 static uint16_t nb_port_pair_params;
  79
  80 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  81
  82 #define MAX_RX_QUEUE_PER_LCORE 16
  83 #define MAX_TX_QUEUE_PER_PORT 16
  84 struct lcore_queue_conf {
  85         unsigned n_rx_port;
  86         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  87 } __rte_cache_aligned;
  88 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  89
  90 static struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  91
  92 static struct rte_eth_conf port_conf = {
  93         .rxmode = {
  94                 .split_hdr_size = 0,
  95         },
  96         .txmode = {
  97                 .mq_mode = ETH_MQ_TX_NONE,
  98         },
  99 };
 100
 101 struct rte_mempool * l2fwd_pktmbuf_pool = NULL;
 102
 103 /* Per-port statistics struct */
 104 struct l2fwd_port_statistics {
 105         uint64_t tx;
 106         uint64_t rx;
 107         uint64_t dropped;
 108 } __rte_cache_aligned;
 109 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 110
 111 #define MAX_TIMER_PERIOD 86400 /* 1 day max */
 112 /* A tsc-based timer responsible for triggering statistics printout */
 113 static uint64_t timer_period = 10; /* default period is 10 seconds */
 114
 115 /* Print out statistics on packets dropped */
 116 static void
 117 print_stats(void)
 118 {
 119         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 120         unsigned portid;
 121
 122         total_packets_dropped = 0;
 123         total_packets_tx = 0;
 124         total_packets_rx = 0;
 125
 126         const char clr[] = { 27, '[', '2', 'J', '\0' };
 127         const char topLeft[] = { 27, '[', '1', ';', '1', 'H','\0' };
 128
 129                 /* Clear screen and move to top left */
 130         printf("%s%s", clr, topLeft);
 131
 132         printf("\nPort statistics ====================================");
 133
 134         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 135                 /* skip disabled ports */
 136                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 137                         continue;
 138                 printf("\nStatistics for port %u ------------------------------"
 139                            "\nPackets sent: %24"PRIu64
 140                            "\nPackets received: %20"PRIu64
 141                            "\nPackets dropped: %21"PRIu64,
 142                            portid,
 143                            port_statistics[portid].tx,
 144                            port_statistics[portid].rx,
 145                            port_statistics[portid].dropped);
 146
 147                 total_packets_dropped += port_statistics[portid].dropped;
 148                 total_packets_tx += port_statistics[portid].tx;
 149                 total_packets_rx += port_statistics[portid].rx;
 150         }
 151         printf("\nAggregate statistics ==============================="
 152                    "\nTotal packets sent: %18"PRIu64
 153                    "\nTotal packets received: %14"PRIu64
 154                    "\nTotal packets dropped: %15"PRIu64,
 155                    total_packets_tx,
 156                    total_packets_rx,
 157                    total_packets_dropped);
 158         printf("\n====================================================\n");
 159
 160         fflush(stdout);
 161 }
 162
 163 static void
 164 l2fwd_mac_updating(struct rte_mbuf *m, unsigned dest_portid)
 165 {
 166         struct rte_ether_hdr *eth;
 167         void *tmp;
 168
 169         eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 170
 171         /* 02:00:00:00:00:xx */
 172         tmp = &eth->d_addr.addr_bytes[0];
 173         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dest_portid << 40);
 174
 175         /* src addr */
 176         rte_ether_addr_copy(&l2fwd_ports_eth_addr[dest_portid], &eth->s_addr);
 177 }
 178
 179 static void
 180 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 181 {
 182         unsigned dst_port;
 183         int sent;
 184         struct rte_eth_dev_tx_buffer *buffer;
 185
 186         dst_port = l2fwd_dst_ports[portid];
 187
 188         if (mac_updating)
 189                 l2fwd_mac_updating(m, dst_port);
 190
 191         buffer = tx_buffer[dst_port];
 192         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 193         if (sent)
 194                 port_statistics[dst_port].tx += sent;
 195 }
 196
 197 /* main processing loop */
 198 static void
 199 l2fwd_main_loop(void)
 200 {
 201         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 202         struct rte_mbuf *m;
 203         int sent;
 204         unsigned lcore_id;
 205         uint64_t prev_tsc, diff_tsc, cur_tsc, timer_tsc;
 206         unsigned i, j, portid, nb_rx;
 207         struct lcore_queue_conf *qconf;
 208         const uint64_t drain_tsc = (rte_get_tsc_hz() + US_PER_S - 1) / US_PER_S *
 209                         BURST_TX_DRAIN_US;
 210         struct rte_eth_dev_tx_buffer *buffer;
 211
 212         prev_tsc = 0;
 213         timer_tsc = 0;
 214
 215         lcore_id = rte_lcore_id();
 216         qconf = &lcore_queue_conf[lcore_id];
 217
 218         if (qconf->n_rx_port == 0) {
 219                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 220                 return;
 221         }
 222
 223         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 224
 225         for (i = 0; i < qconf->n_rx_port; i++) {
 226
 227                 portid = qconf->rx_port_list[i];
 228                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 229                         portid);
 230
 231         }
 232
 233         while (!force_quit) {
 234
 235                 cur_tsc = rte_rdtsc();
 236
 237                 /*
 238                  * TX burst queue drain
 239                  */
 240                 diff_tsc = cur_tsc - prev_tsc;
 241                 if (unlikely(diff_tsc > drain_tsc)) {
 242
 243                         for (i = 0; i < qconf->n_rx_port; i++) {
 244
 245                                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 246                                 buffer = tx_buffer[portid];
 247
 248                                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 249                                 if (sent)
 250                                         port_statistics[portid].tx += sent;
 251
 252                         }
 253
 254                         /* if timer is enabled */
 255                         if (timer_period > 0) {
 256
 257                                 /* advance the timer */
 258                                 timer_tsc += diff_tsc;
 259
 260                                 /* if timer has reached its timeout */
 261                                 if (unlikely(timer_tsc >= timer_period)) {
 262
 263                                         /* do this only on master core */
 264                                         if (lcore_id == rte_get_master_lcore()) {
 265                                                 print_stats();
 266                                                 /* reset the timer */
 267                                                 timer_tsc = 0;
 268                                         }
 269                                 }
 270                         }
 271
 272                         prev_tsc = cur_tsc;
 273                 }
 274
 275                 /*
 276                  * Read packet from RX queues
 277                  */
 278                 for (i = 0; i < qconf->n_rx_port; i++) {
 279
 280                         portid = qconf->rx_port_list[i];
 281                         nb_rx = rte_eth_rx_burst(portid, 0,
 282                                                  pkts_burst, MAX_PKT_BURST);
 283
 284                         port_statistics[portid].rx += nb_rx;
 285
 286                         for (j = 0; j < nb_rx; j++) {
 287                                 m = pkts_burst[j];
 288                                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 289                                 l2fwd_simple_forward(m, portid);
 290                         }
 291                 }
 292         }
 293 }
 294
 295 static int
 296 l2fwd_launch_one_lcore(__rte_unused void *dummy)
 297 {
 298         l2fwd_main_loop();
 299         return 0;
 300 }
 301
 302 /* display usage */
 303 static void
 304 l2fwd_usage(const char *prgname)
 305 {
 306         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 307                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 308                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 309                "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 310                "  --[no-]mac-updating: Enable or disable MAC addresses updating (enabled by default)\n"
 311                "      When enabled:\n"
 312                "       - The source MAC address is replaced by the TX port MAC address\n"
 313                "       - The destination MAC address is replaced by 02:00:00:00:00:TX_PORT_ID\n"
 314                "  --portmap: Configure forwarding port pair mapping\n"
 315                "              Default: alternate port pairs\n\n",
 316                prgname);
 317 }
 318
 319 static int
 320 l2fwd_parse_portmask(const char *portmask)
 321 {
 322         char *end = NULL;
 323         unsigned long pm;
 324
 325         /* parse hexadecimal string */
 326         pm = strtoul(portmask, &end, 16);
 327         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 328                 return -1;
 329
 330         if (pm == 0)
 331                 return -1;
 332
 333         return pm;
 334 }
 335
 336 static int
 337 l2fwd_parse_port_pair_config(const char *q_arg)
 338 {
 339         enum fieldnames {
 340                 FLD_PORT1 = 0,
 341                 FLD_PORT2,
 342                 _NUM_FLD
 343         };
 344         unsigned long int_fld[_NUM_FLD];
 345         const char *p, *p0 = q_arg;
 346         char *str_fld[_NUM_FLD];
 347         unsigned int size;
 348         char s[256];
 349         char *end;
 350         int i;
 351
 352         nb_port_pair_params = 0;
 353
 354         while ((p = strchr(p0, '(')) != NULL) {
 355                 ++p;
 356                 p0 = strchr(p, ')');
 357                 if (p0 == NULL)
 358                         return -1;
 359
 360                 size = p0 - p;
 361                 if (size >= sizeof(s))
 362                         return -1;
 363
 364                 memcpy(s, p, size);
 365                 s[size] = '\0';
 366                 if (rte_strsplit(s, sizeof(s), str_fld,
 367                                  _NUM_FLD, ',') != _NUM_FLD)
 368                         return -1;
 369                 for (i = 0; i < _NUM_FLD; i++) {
 370                         errno = 0;
 371                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 372                         if (errno != 0 || end == str_fld[i] ||
 373                             int_fld[i] >= RTE_MAX_ETHPORTS)
 374                                 return -1;
 375                 }
 376                 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) {
 377                         printf("exceeded max number of port pair params: %hu\n",
 378                                 nb_port_pair_params);
 379                         return -1;
 380                 }
 381                 port_pair_params_array[nb_port_pair_params].port[0] =
 382                                 (uint16_t)int_fld[FLD_PORT1];
 383                 port_pair_params_array[nb_port_pair_params].port[1] =
 384                                 (uint16_t)int_fld[FLD_PORT2];
 385                 ++nb_port_pair_params;
 386         }
 387         port_pair_params = port_pair_params_array;
 388         return 0;
 389 }
 390
 391 static unsigned int
 392 l2fwd_parse_nqueue(const char *q_arg)
 393 {
 394         char *end = NULL;
 395         unsigned long n;
 396
 397         /* parse hexadecimal string */
 398         n = strtoul(q_arg, &end, 10);
 399         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 400                 return 0;
 401         if (n == 0)
 402                 return 0;
 403         if (n >= MAX_RX_QUEUE_PER_LCORE)
 404                 return 0;
 405
 406         return n;
 407 }
 408
 409 static int
 410 l2fwd_parse_timer_period(const char *q_arg)
 411 {
 412         char *end = NULL;
 413         int n;
 414
 415         /* parse number string */
 416         n = strtol(q_arg, &end, 10);
 417         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 418                 return -1;
 419         if (n >= MAX_TIMER_PERIOD)
 420                 return -1;
 421
 422         return n;
 423 }
 424
 425 static const char short_options[] =
 426         "p:"  /* portmask */
 427         "q:"  /* number of queues */
 428         "T:"  /* timer period */
 429         ;
 430
 431 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 432 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 433 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap"
 434
 435 enum {
 436         /* long options mapped to a short option */
 437
 438         /* first long only option value must be >= 256, so that we won't
 439          * conflict with short options */
 440         CMD_LINE_OPT_MIN_NUM = 256,
 441         CMD_LINE_OPT_PORTMAP_NUM,
 442 };
 443
 444 static const struct option lgopts[] = {
 445         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 446         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 447         { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM},
 448         {NULL, 0, 0, 0}
 449 };
 450
 451 /* Parse the argument given in the command line of the application */
 452 static int
 453 l2fwd_parse_args(int argc, char **argv)
 454 {
 455         int opt, ret, timer_secs;
 456         char **argvopt;
 457         int option_index;
 458         char *prgname = argv[0];
 459
 460         argvopt = argv;
 461         port_pair_params = NULL;
 462
 463         while ((opt = getopt_long(argc, argvopt, short_options,
 464                                   lgopts, &option_index)) != EOF) {
 465
 466                 switch (opt) {
 467                 /* portmask */
 468                 case 'p':
 469                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 470                         if (l2fwd_enabled_port_mask == 0) {
 471                                 printf("invalid portmask\n");
 472                                 l2fwd_usage(prgname);
 473                                 return -1;
 474                         }
 475                         break;
 476
 477                 /* nqueue */
 478                 case 'q':
 479                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 480                         if (l2fwd_rx_queue_per_lcore == 0) {
 481                                 printf("invalid queue number\n");
 482                                 l2fwd_usage(prgname);
 483                                 return -1;
 484                         }
 485                         break;
 486
 487                 /* timer period */
 488                 case 'T':
 489                         timer_secs = l2fwd_parse_timer_period(optarg);
 490                         if (timer_secs < 0) {
 491                                 printf("invalid timer period\n");
 492                                 l2fwd_usage(prgname);
 493                                 return -1;
 494                         }
 495                         timer_period = timer_secs;
 496                         break;
 497
 498                 /* long options */
 499                 case CMD_LINE_OPT_PORTMAP_NUM:
 500                         ret = l2fwd_parse_port_pair_config(optarg);
 501                         if (ret) {
 502                                 fprintf(stderr, "Invalid config\n");
 503                                 l2fwd_usage(prgname);
 504                                 return -1;
 505                         }
 506                         break;
 507
 508                 default:
 509                         l2fwd_usage(prgname);
 510                         return -1;
 511                 }
 512         }
 513
 514         if (optind >= 0)
 515                 argv[optind-1] = prgname;
 516
 517         ret = optind-1;
 518         optind = 1; /* reset getopt lib */
 519         return ret;
 520 }
 521
 522 /*
 523  * Check port pair config with enabled port mask,
 524  * and for valid port pair combinations.
 525  */
 526 static int
 527 check_port_pair_config(void)
 528 {
 529         uint32_t port_pair_config_mask = 0;
 530         uint32_t port_pair_mask = 0;
 531         uint16_t index, i, portid;
 532
 533         for (index = 0; index < nb_port_pair_params; index++) {
 534                 port_pair_mask = 0;
 535
 536                 for (i = 0; i < NUM_PORTS; i++)  {
 537                         portid = port_pair_params[index].port[i];
 538                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 539                                 printf("port %u is not enabled in port mask\n",
 540                                        portid);
 541                                 return -1;
 542                         }
 543                         if (!rte_eth_dev_is_valid_port(portid)) {
 544                                 printf("port %u is not present on the board\n",
 545                                        portid);
 546                                 return -1;
 547                         }
 548
 549                         port_pair_mask |= 1 << portid;
 550                 }
 551
 552                 if (port_pair_config_mask & port_pair_mask) {
 553                         printf("port %u is used in other port pairs\n", portid);
 554                         return -1;
 555                 }
 556                 port_pair_config_mask |= port_pair_mask;
 557         }
 558
 559         l2fwd_enabled_port_mask &= port_pair_config_mask;
 560
 561         return 0;
 562 }
 563
 564 /* Check the link status of all ports in up to 9s, and print them finally */
 565 static void
 566 check_all_ports_link_status(uint32_t port_mask)
 567 {
 568 #define CHECK_INTERVAL 100 /* 100ms */
 569 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 570         uint16_t portid;
 571         uint8_t count, all_ports_up, print_flag = 0;
 572         struct rte_eth_link link;
 573         int ret;
 574
 575         printf("\nChecking link status");
 576         fflush(stdout);
 577         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 578                 if (force_quit)
 579                         return;
 580                 all_ports_up = 1;
 581                 RTE_ETH_FOREACH_DEV(portid) {
 582                         if (force_quit)
 583                                 return;
 584                         if ((port_mask & (1 << portid)) == 0)
 585                                 continue;
 586                         memset(&link, 0, sizeof(link));
 587                         ret = rte_eth_link_get_nowait(portid, &link);
 588                         if (ret < 0) {
 589                                 all_ports_up = 0;
 590                                 if (print_flag == 1)
 591                                         printf("Port %u link get failed: %s\n",
 592                                                 portid, rte_strerror(-ret));
 593                                 continue;
 594                         }
 595                         /* print link status if flag set */
 596                         if (print_flag == 1) {
 597                                 if (link.link_status)
 598                                         printf(
 599                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 600                                                 portid, link.link_speed,
 601                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 602                                         ("full-duplex") : ("half-duplex"));
 603                                 else
 604                                         printf("Port %d Link Down\n", portid);
 605                                 continue;
 606                         }
 607                         /* clear all_ports_up flag if any link down */
 608                         if (link.link_status == ETH_LINK_DOWN) {
 609                                 all_ports_up = 0;
 610                                 break;
 611                         }
 612                 }
 613                 /* after finally printing all link status, get out */
 614                 if (print_flag == 1)
 615                         break;
 616
 617                 if (all_ports_up == 0) {
 618                         printf(".");
 619                         fflush(stdout);
 620                         rte_delay_ms(CHECK_INTERVAL);
 621                 }
 622
 623                 /* set the print_flag if all ports up or timeout */
 624                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 625                         print_flag = 1;
 626                         printf("done\n");
 627                 }
 628         }
 629 }
 630
 631 static void
 632 signal_handler(int signum)
 633 {
 634         if (signum == SIGINT || signum == SIGTERM) {
 635                 printf("\n\nSignal %d received, preparing to exit...\n",
 636                                 signum);
 637                 force_quit = true;
 638         }
 639 }
 640
 641 int
 642 main(int argc, char **argv)
 643 {
 644         struct lcore_queue_conf *qconf;
 645         int ret;
 646         uint16_t nb_ports;
 647         uint16_t nb_ports_available = 0;
 648         uint16_t portid, last_port;
 649         unsigned lcore_id, rx_lcore_id;
 650         unsigned nb_ports_in_mask = 0;
 651         unsigned int nb_lcores = 0;
 652         unsigned int nb_mbufs;
 653
 654         /* init EAL */
 655         ret = rte_eal_init(argc, argv);
 656         if (ret < 0)
 657                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 658         argc -= ret;
 659         argv += ret;
 660
 661         force_quit = false;
 662         signal(SIGINT, signal_handler);
 663         signal(SIGTERM, signal_handler);
 664
 665         /* parse application arguments (after the EAL ones) */
 666         ret = l2fwd_parse_args(argc, argv);
 667         if (ret < 0)
 668                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 669
 670         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 671
 672         /* convert to number of cycles */
 673         timer_period *= rte_get_timer_hz();
 674
 675         nb_ports = rte_eth_dev_count_avail();
 676         if (nb_ports == 0)
 677                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 678
 679         if (port_pair_params != NULL) {
 680                 if (check_port_pair_config() < 0)
 681                         rte_exit(EXIT_FAILURE, "Invalid port pair config\n");
 682         }
 683
 684         /* check port mask to possible port mask */
 685         if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
 686                 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
 687                         (1 << nb_ports) - 1);
 688
 689         /* reset l2fwd_dst_ports */
 690         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 691                 l2fwd_dst_ports[portid] = 0;
 692         last_port = 0;
 693
 694         /* populate destination port details */
 695         if (port_pair_params != NULL) {
 696                 uint16_t idx, p;
 697
 698                 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) {
 699                         p = idx & 1;
 700                         portid = port_pair_params[idx >> 1].port[p];
 701                         l2fwd_dst_ports[portid] =
 702                                 port_pair_params[idx >> 1].port[p ^ 1];
 703                 }
 704         } else {
 705                 RTE_ETH_FOREACH_DEV(portid) {
 706                         /* skip ports that are not enabled */
 707                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 708                                 continue;
 709
 710                         if (nb_ports_in_mask % 2) {
 711                                 l2fwd_dst_ports[portid] = last_port;
 712                                 l2fwd_dst_ports[last_port] = portid;
 713                         } else {
 714                                 last_port = portid;
 715                         }
 716
 717                         nb_ports_in_mask++;
 718                 }
 719                 if (nb_ports_in_mask % 2) {
 720                         printf("Notice: odd number of ports in portmask.\n");
 721                         l2fwd_dst_ports[last_port] = last_port;
 722                 }
 723         }
 724
 725         rx_lcore_id = 0;
 726         qconf = NULL;
 727
 728         /* Initialize the port/queue configuration of each logical core */
 729         RTE_ETH_FOREACH_DEV(portid) {
 730                 /* skip ports that are not enabled */
 731                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 732                         continue;
 733
 734                 /* get the lcore_id for this port */
 735                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 736                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 737                        l2fwd_rx_queue_per_lcore) {
 738                         rx_lcore_id++;
 739                         if (rx_lcore_id >= RTE_MAX_LCORE)
 740                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 741                 }
 742
 743                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
 744                         /* Assigned a new logical core in the loop above. */
 745                         qconf = &lcore_queue_conf[rx_lcore_id];
 746                         nb_lcores++;
 747                 }
 748
 749                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 750                 qconf->n_rx_port++;
 751                 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id,
 752                        portid, l2fwd_dst_ports[portid]);
 753         }
 754
 755         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 756                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 757
 758         /* create the mbuf pool */
 759         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 760                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 761                 rte_socket_id());
 762         if (l2fwd_pktmbuf_pool == NULL)
 763                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 764
 765         /* Initialise each port */
 766         RTE_ETH_FOREACH_DEV(portid) {
 767                 struct rte_eth_rxconf rxq_conf;
 768                 struct rte_eth_txconf txq_conf;
 769                 struct rte_eth_conf local_port_conf = port_conf;
 770                 struct rte_eth_dev_info dev_info;
 771
 772                 /* skip ports that are not enabled */
 773                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 774                         printf("Skipping disabled port %u\n", portid);
 775                         continue;
 776                 }
 777                 nb_ports_available++;
 778
 779                 /* init port */
 780                 printf("Initializing port %u... ", portid);
 781                 fflush(stdout);
 782
 783                 ret = rte_eth_dev_info_get(portid, &dev_info);
 784                 if (ret != 0)
 785                         rte_exit(EXIT_FAILURE,
 786                                 "Error during getting device (port %u) info: %s\n",
 787                                 portid, strerror(-ret));
 788
 789                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 790                         local_port_conf.txmode.offloads |=
 791                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 792                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 793                 if (ret < 0)
 794                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 795                                   ret, portid);
 796
 797                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 798                                                        &nb_txd);
 799                 if (ret < 0)
 800                         rte_exit(EXIT_FAILURE,
 801                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 802                                  ret, portid);
 803
 804                 ret = rte_eth_macaddr_get(portid,
 805                                           &l2fwd_ports_eth_addr[portid]);
 806                 if (ret < 0)
 807                         rte_exit(EXIT_FAILURE,
 808                                  "Cannot get MAC address: err=%d, port=%u\n",
 809                                  ret, portid);
 810
 811                 /* init one RX queue */
 812                 fflush(stdout);
 813                 rxq_conf = dev_info.default_rxconf;
 814                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 815                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 816                                              rte_eth_dev_socket_id(portid),
 817                                              &rxq_conf,
 818                                              l2fwd_pktmbuf_pool);
 819                 if (ret < 0)
 820                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 821                                   ret, portid);
 822
 823                 /* init one TX queue on each port */
 824                 fflush(stdout);
 825                 txq_conf = dev_info.default_txconf;
 826                 txq_conf.offloads = local_port_conf.txmode.offloads;
 827                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 828                                 rte_eth_dev_socket_id(portid),
 829                                 &txq_conf);
 830                 if (ret < 0)
 831                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 832                                 ret, portid);
 833
 834                 /* Initialize TX buffers */
 835                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 836                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 837                                 rte_eth_dev_socket_id(portid));
 838                 if (tx_buffer[portid] == NULL)
 839                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 840                                         portid);
 841
 842                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 843
 844                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 845                                 rte_eth_tx_buffer_count_callback,
 846                                 &port_statistics[portid].dropped);
 847                 if (ret < 0)
 848                         rte_exit(EXIT_FAILURE,
 849                         "Cannot set error callback for tx buffer on port %u\n",
 850                                  portid);
 851
 852                 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL,
 853                                              0);
 854                 if (ret < 0)
 855                         printf("Port %u, Failed to disable Ptype parsing\n",
 856                                         portid);
 857                 /* Start device */
 858                 ret = rte_eth_dev_start(portid);
 859                 if (ret < 0)
 860                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 861                                   ret, portid);
 862
 863                 printf("done: \n");
 864
 865                 ret = rte_eth_promiscuous_enable(portid);
 866                 if (ret != 0)
 867                         rte_exit(EXIT_FAILURE,
 868                                  "rte_eth_promiscuous_enable:err=%s, port=%u\n",
 869                                  rte_strerror(-ret), portid);
 870
 871                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 872                                 portid,
 873                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 874                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 875                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 876                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 877                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 878                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 879
 880                 /* initialize port stats */
 881                 memset(&port_statistics, 0, sizeof(port_statistics));
 882         }
 883
 884         if (!nb_ports_available) {
 885                 rte_exit(EXIT_FAILURE,
 886                         "All available ports are disabled. Please set portmask.\n");
 887         }
 888
 889         check_all_ports_link_status(l2fwd_enabled_port_mask);
 890
 891         ret = 0;
 892         /* launch per-lcore init on every lcore */
 893         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 894         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 895                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 896                         ret = -1;
 897                         break;
 898                 }
 899         }
 900
 901         RTE_ETH_FOREACH_DEV(portid) {
 902                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 903                         continue;
 904                 printf("Closing port %d...", portid);
 905                 rte_eth_dev_stop(portid);
 906                 rte_eth_dev_close(portid);
 907                 printf(" Done\n");
 908         }
 909         printf("Bye...\n");
 910
 911         return ret;
 912 }