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 0;
 329
 330         return pm;
 331 }
 332
 333 static int
 334 l2fwd_parse_port_pair_config(const char *q_arg)
 335 {
 336         enum fieldnames {
 337                 FLD_PORT1 = 0,
 338                 FLD_PORT2,
 339                 _NUM_FLD
 340         };
 341         unsigned long int_fld[_NUM_FLD];
 342         const char *p, *p0 = q_arg;
 343         char *str_fld[_NUM_FLD];
 344         unsigned int size;
 345         char s[256];
 346         char *end;
 347         int i;
 348
 349         nb_port_pair_params = 0;
 350
 351         while ((p = strchr(p0, '(')) != NULL) {
 352                 ++p;
 353                 p0 = strchr(p, ')');
 354                 if (p0 == NULL)
 355                         return -1;
 356
 357                 size = p0 - p;
 358                 if (size >= sizeof(s))
 359                         return -1;
 360
 361                 memcpy(s, p, size);
 362                 s[size] = '\0';
 363                 if (rte_strsplit(s, sizeof(s), str_fld,
 364                                  _NUM_FLD, ',') != _NUM_FLD)
 365                         return -1;
 366                 for (i = 0; i < _NUM_FLD; i++) {
 367                         errno = 0;
 368                         int_fld[i] = strtoul(str_fld[i], &end, 0);
 369                         if (errno != 0 || end == str_fld[i] ||
 370                             int_fld[i] >= RTE_MAX_ETHPORTS)
 371                                 return -1;
 372                 }
 373                 if (nb_port_pair_params >= RTE_MAX_ETHPORTS/2) {
 374                         printf("exceeded max number of port pair params: %hu\n",
 375                                 nb_port_pair_params);
 376                         return -1;
 377                 }
 378                 port_pair_params_array[nb_port_pair_params].port[0] =
 379                                 (uint16_t)int_fld[FLD_PORT1];
 380                 port_pair_params_array[nb_port_pair_params].port[1] =
 381                                 (uint16_t)int_fld[FLD_PORT2];
 382                 ++nb_port_pair_params;
 383         }
 384         port_pair_params = port_pair_params_array;
 385         return 0;
 386 }
 387
 388 static unsigned int
 389 l2fwd_parse_nqueue(const char *q_arg)
 390 {
 391         char *end = NULL;
 392         unsigned long n;
 393
 394         /* parse hexadecimal string */
 395         n = strtoul(q_arg, &end, 10);
 396         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 397                 return 0;
 398         if (n == 0)
 399                 return 0;
 400         if (n >= MAX_RX_QUEUE_PER_LCORE)
 401                 return 0;
 402
 403         return n;
 404 }
 405
 406 static int
 407 l2fwd_parse_timer_period(const char *q_arg)
 408 {
 409         char *end = NULL;
 410         int n;
 411
 412         /* parse number string */
 413         n = strtol(q_arg, &end, 10);
 414         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 415                 return -1;
 416         if (n >= MAX_TIMER_PERIOD)
 417                 return -1;
 418
 419         return n;
 420 }
 421
 422 static const char short_options[] =
 423         "p:"  /* portmask */
 424         "q:"  /* number of queues */
 425         "T:"  /* timer period */
 426         ;
 427
 428 #define CMD_LINE_OPT_MAC_UPDATING "mac-updating"
 429 #define CMD_LINE_OPT_NO_MAC_UPDATING "no-mac-updating"
 430 #define CMD_LINE_OPT_PORTMAP_CONFIG "portmap"
 431
 432 enum {
 433         /* long options mapped to a short option */
 434
 435         /* first long only option value must be >= 256, so that we won't
 436          * conflict with short options */
 437         CMD_LINE_OPT_MIN_NUM = 256,
 438         CMD_LINE_OPT_PORTMAP_NUM,
 439 };
 440
 441 static const struct option lgopts[] = {
 442         { CMD_LINE_OPT_MAC_UPDATING, no_argument, &mac_updating, 1},
 443         { CMD_LINE_OPT_NO_MAC_UPDATING, no_argument, &mac_updating, 0},
 444         { CMD_LINE_OPT_PORTMAP_CONFIG, 1, 0, CMD_LINE_OPT_PORTMAP_NUM},
 445         {NULL, 0, 0, 0}
 446 };
 447
 448 /* Parse the argument given in the command line of the application */
 449 static int
 450 l2fwd_parse_args(int argc, char **argv)
 451 {
 452         int opt, ret, timer_secs;
 453         char **argvopt;
 454         int option_index;
 455         char *prgname = argv[0];
 456
 457         argvopt = argv;
 458         port_pair_params = NULL;
 459
 460         while ((opt = getopt_long(argc, argvopt, short_options,
 461                                   lgopts, &option_index)) != EOF) {
 462
 463                 switch (opt) {
 464                 /* portmask */
 465                 case 'p':
 466                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 467                         if (l2fwd_enabled_port_mask == 0) {
 468                                 printf("invalid portmask\n");
 469                                 l2fwd_usage(prgname);
 470                                 return -1;
 471                         }
 472                         break;
 473
 474                 /* nqueue */
 475                 case 'q':
 476                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 477                         if (l2fwd_rx_queue_per_lcore == 0) {
 478                                 printf("invalid queue number\n");
 479                                 l2fwd_usage(prgname);
 480                                 return -1;
 481                         }
 482                         break;
 483
 484                 /* timer period */
 485                 case 'T':
 486                         timer_secs = l2fwd_parse_timer_period(optarg);
 487                         if (timer_secs < 0) {
 488                                 printf("invalid timer period\n");
 489                                 l2fwd_usage(prgname);
 490                                 return -1;
 491                         }
 492                         timer_period = timer_secs;
 493                         break;
 494
 495                 /* long options */
 496                 case CMD_LINE_OPT_PORTMAP_NUM:
 497                         ret = l2fwd_parse_port_pair_config(optarg);
 498                         if (ret) {
 499                                 fprintf(stderr, "Invalid config\n");
 500                                 l2fwd_usage(prgname);
 501                                 return -1;
 502                         }
 503                         break;
 504
 505                 default:
 506                         l2fwd_usage(prgname);
 507                         return -1;
 508                 }
 509         }
 510
 511         if (optind >= 0)
 512                 argv[optind-1] = prgname;
 513
 514         ret = optind-1;
 515         optind = 1; /* reset getopt lib */
 516         return ret;
 517 }
 518
 519 /*
 520  * Check port pair config with enabled port mask,
 521  * and for valid port pair combinations.
 522  */
 523 static int
 524 check_port_pair_config(void)
 525 {
 526         uint32_t port_pair_config_mask = 0;
 527         uint32_t port_pair_mask = 0;
 528         uint16_t index, i, portid;
 529
 530         for (index = 0; index < nb_port_pair_params; index++) {
 531                 port_pair_mask = 0;
 532
 533                 for (i = 0; i < NUM_PORTS; i++)  {
 534                         portid = port_pair_params[index].port[i];
 535                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 536                                 printf("port %u is not enabled in port mask\n",
 537                                        portid);
 538                                 return -1;
 539                         }
 540                         if (!rte_eth_dev_is_valid_port(portid)) {
 541                                 printf("port %u is not present on the board\n",
 542                                        portid);
 543                                 return -1;
 544                         }
 545
 546                         port_pair_mask |= 1 << portid;
 547                 }
 548
 549                 if (port_pair_config_mask & port_pair_mask) {
 550                         printf("port %u is used in other port pairs\n", portid);
 551                         return -1;
 552                 }
 553                 port_pair_config_mask |= port_pair_mask;
 554         }
 555
 556         l2fwd_enabled_port_mask &= port_pair_config_mask;
 557
 558         return 0;
 559 }
 560
 561 /* Check the link status of all ports in up to 9s, and print them finally */
 562 static void
 563 check_all_ports_link_status(uint32_t port_mask)
 564 {
 565 #define CHECK_INTERVAL 100 /* 100ms */
 566 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 567         uint16_t portid;
 568         uint8_t count, all_ports_up, print_flag = 0;
 569         struct rte_eth_link link;
 570         int ret;
 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                                 if (link.link_status)
 595                                         printf(
 596                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 597                                                 portid, link.link_speed,
 598                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 599                                         ("full-duplex") : ("half-duplex"));
 600                                 else
 601                                         printf("Port %d Link Down\n", portid);
 602                                 continue;
 603                         }
 604                         /* clear all_ports_up flag if any link down */
 605                         if (link.link_status == ETH_LINK_DOWN) {
 606                                 all_ports_up = 0;
 607                                 break;
 608                         }
 609                 }
 610                 /* after finally printing all link status, get out */
 611                 if (print_flag == 1)
 612                         break;
 613
 614                 if (all_ports_up == 0) {
 615                         printf(".");
 616                         fflush(stdout);
 617                         rte_delay_ms(CHECK_INTERVAL);
 618                 }
 619
 620                 /* set the print_flag if all ports up or timeout */
 621                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 622                         print_flag = 1;
 623                         printf("done\n");
 624                 }
 625         }
 626 }
 627
 628 static void
 629 signal_handler(int signum)
 630 {
 631         if (signum == SIGINT || signum == SIGTERM) {
 632                 printf("\n\nSignal %d received, preparing to exit...\n",
 633                                 signum);
 634                 force_quit = true;
 635         }
 636 }
 637
 638 int
 639 main(int argc, char **argv)
 640 {
 641         struct lcore_queue_conf *qconf;
 642         int ret;
 643         uint16_t nb_ports;
 644         uint16_t nb_ports_available = 0;
 645         uint16_t portid, last_port;
 646         unsigned lcore_id, rx_lcore_id;
 647         unsigned nb_ports_in_mask = 0;
 648         unsigned int nb_lcores = 0;
 649         unsigned int nb_mbufs;
 650
 651         /* init EAL */
 652         ret = rte_eal_init(argc, argv);
 653         if (ret < 0)
 654                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 655         argc -= ret;
 656         argv += ret;
 657
 658         force_quit = false;
 659         signal(SIGINT, signal_handler);
 660         signal(SIGTERM, signal_handler);
 661
 662         /* parse application arguments (after the EAL ones) */
 663         ret = l2fwd_parse_args(argc, argv);
 664         if (ret < 0)
 665                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 666
 667         printf("MAC updating %s\n", mac_updating ? "enabled" : "disabled");
 668
 669         /* convert to number of cycles */
 670         timer_period *= rte_get_timer_hz();
 671
 672         nb_ports = rte_eth_dev_count_avail();
 673         if (nb_ports == 0)
 674                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 675
 676         if (port_pair_params != NULL) {
 677                 if (check_port_pair_config() < 0)
 678                         rte_exit(EXIT_FAILURE, "Invalid port pair config\n");
 679         }
 680
 681         /* check port mask to possible port mask */
 682         if (l2fwd_enabled_port_mask & ~((1 << nb_ports) - 1))
 683                 rte_exit(EXIT_FAILURE, "Invalid portmask; possible (0x%x)\n",
 684                         (1 << nb_ports) - 1);
 685
 686         /* reset l2fwd_dst_ports */
 687         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 688                 l2fwd_dst_ports[portid] = 0;
 689         last_port = 0;
 690
 691         /* populate destination port details */
 692         if (port_pair_params != NULL) {
 693                 uint16_t idx, p;
 694
 695                 for (idx = 0; idx < (nb_port_pair_params << 1); idx++) {
 696                         p = idx & 1;
 697                         portid = port_pair_params[idx >> 1].port[p];
 698                         l2fwd_dst_ports[portid] =
 699                                 port_pair_params[idx >> 1].port[p ^ 1];
 700                 }
 701         } else {
 702                 RTE_ETH_FOREACH_DEV(portid) {
 703                         /* skip ports that are not enabled */
 704                         if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 705                                 continue;
 706
 707                         if (nb_ports_in_mask % 2) {
 708                                 l2fwd_dst_ports[portid] = last_port;
 709                                 l2fwd_dst_ports[last_port] = portid;
 710                         } else {
 711                                 last_port = portid;
 712                         }
 713
 714                         nb_ports_in_mask++;
 715                 }
 716                 if (nb_ports_in_mask % 2) {
 717                         printf("Notice: odd number of ports in portmask.\n");
 718                         l2fwd_dst_ports[last_port] = last_port;
 719                 }
 720         }
 721
 722         rx_lcore_id = 0;
 723         qconf = NULL;
 724
 725         /* Initialize the port/queue configuration of each logical core */
 726         RTE_ETH_FOREACH_DEV(portid) {
 727                 /* skip ports that are not enabled */
 728                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 729                         continue;
 730
 731                 /* get the lcore_id for this port */
 732                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 733                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 734                        l2fwd_rx_queue_per_lcore) {
 735                         rx_lcore_id++;
 736                         if (rx_lcore_id >= RTE_MAX_LCORE)
 737                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 738                 }
 739
 740                 if (qconf != &lcore_queue_conf[rx_lcore_id]) {
 741                         /* Assigned a new logical core in the loop above. */
 742                         qconf = &lcore_queue_conf[rx_lcore_id];
 743                         nb_lcores++;
 744                 }
 745
 746                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 747                 qconf->n_rx_port++;
 748                 printf("Lcore %u: RX port %u TX port %u\n", rx_lcore_id,
 749                        portid, l2fwd_dst_ports[portid]);
 750         }
 751
 752         nb_mbufs = RTE_MAX(nb_ports * (nb_rxd + nb_txd + MAX_PKT_BURST +
 753                 nb_lcores * MEMPOOL_CACHE_SIZE), 8192U);
 754
 755         /* create the mbuf pool */
 756         l2fwd_pktmbuf_pool = rte_pktmbuf_pool_create("mbuf_pool", nb_mbufs,
 757                 MEMPOOL_CACHE_SIZE, 0, RTE_MBUF_DEFAULT_BUF_SIZE,
 758                 rte_socket_id());
 759         if (l2fwd_pktmbuf_pool == NULL)
 760                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 761
 762         /* Initialise each port */
 763         RTE_ETH_FOREACH_DEV(portid) {
 764                 struct rte_eth_rxconf rxq_conf;
 765                 struct rte_eth_txconf txq_conf;
 766                 struct rte_eth_conf local_port_conf = port_conf;
 767                 struct rte_eth_dev_info dev_info;
 768
 769                 /* skip ports that are not enabled */
 770                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 771                         printf("Skipping disabled port %u\n", portid);
 772                         continue;
 773                 }
 774                 nb_ports_available++;
 775
 776                 /* init port */
 777                 printf("Initializing port %u... ", portid);
 778                 fflush(stdout);
 779
 780                 ret = rte_eth_dev_info_get(portid, &dev_info);
 781                 if (ret != 0)
 782                         rte_exit(EXIT_FAILURE,
 783                                 "Error during getting device (port %u) info: %s\n",
 784                                 portid, strerror(-ret));
 785
 786                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 787                         local_port_conf.txmode.offloads |=
 788                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 789                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 790                 if (ret < 0)
 791                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 792                                   ret, portid);
 793
 794                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 795                                                        &nb_txd);
 796                 if (ret < 0)
 797                         rte_exit(EXIT_FAILURE,
 798                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 799                                  ret, portid);
 800
 801                 ret = rte_eth_macaddr_get(portid,
 802                                           &l2fwd_ports_eth_addr[portid]);
 803                 if (ret < 0)
 804                         rte_exit(EXIT_FAILURE,
 805                                  "Cannot get MAC address: err=%d, port=%u\n",
 806                                  ret, portid);
 807
 808                 /* init one RX queue */
 809                 fflush(stdout);
 810                 rxq_conf = dev_info.default_rxconf;
 811                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 812                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 813                                              rte_eth_dev_socket_id(portid),
 814                                              &rxq_conf,
 815                                              l2fwd_pktmbuf_pool);
 816                 if (ret < 0)
 817                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 818                                   ret, portid);
 819
 820                 /* init one TX queue on each port */
 821                 fflush(stdout);
 822                 txq_conf = dev_info.default_txconf;
 823                 txq_conf.offloads = local_port_conf.txmode.offloads;
 824                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 825                                 rte_eth_dev_socket_id(portid),
 826                                 &txq_conf);
 827                 if (ret < 0)
 828                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 829                                 ret, portid);
 830
 831                 /* Initialize TX buffers */
 832                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 833                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 834                                 rte_eth_dev_socket_id(portid));
 835                 if (tx_buffer[portid] == NULL)
 836                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 837                                         portid);
 838
 839                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 840
 841                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 842                                 rte_eth_tx_buffer_count_callback,
 843                                 &port_statistics[portid].dropped);
 844                 if (ret < 0)
 845                         rte_exit(EXIT_FAILURE,
 846                         "Cannot set error callback for tx buffer on port %u\n",
 847                                  portid);
 848
 849                 ret = rte_eth_dev_set_ptypes(portid, RTE_PTYPE_UNKNOWN, NULL,
 850                                              0);
 851                 if (ret < 0)
 852                         printf("Port %u, Failed to disable Ptype parsing\n",
 853                                         portid);
 854                 /* Start device */
 855                 ret = rte_eth_dev_start(portid);
 856                 if (ret < 0)
 857                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 858                                   ret, portid);
 859
 860                 printf("done: \n");
 861
 862                 ret = rte_eth_promiscuous_enable(portid);
 863                 if (ret != 0)
 864                         rte_exit(EXIT_FAILURE,
 865                                  "rte_eth_promiscuous_enable:err=%s, port=%u\n",
 866                                  rte_strerror(-ret), portid);
 867
 868                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 869                                 portid,
 870                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 871                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 872                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 873                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 874                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 875                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 876
 877                 /* initialize port stats */
 878                 memset(&port_statistics, 0, sizeof(port_statistics));
 879         }
 880
 881         if (!nb_ports_available) {
 882                 rte_exit(EXIT_FAILURE,
 883                         "All available ports are disabled. Please set portmask.\n");
 884         }
 885
 886         check_all_ports_link_status(l2fwd_enabled_port_mask);
 887
 888         ret = 0;
 889         /* launch per-lcore init on every lcore */
 890         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 891         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 892                 if (rte_eal_wait_lcore(lcore_id) < 0) {
 893                         ret = -1;
 894                         break;
 895                 }
 896         }
 897
 898         RTE_ETH_FOREACH_DEV(portid) {
 899                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 900                         continue;
 901                 printf("Closing port %d...", portid);
 902                 rte_eth_dev_stop(portid);
 903                 rte_eth_dev_close(portid);
 904                 printf(" Done\n");
 905         }
 906         printf("Bye...\n");
 907
 908         return ret;
 909 }