examples/distributor/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2017 Intel Corporation
   3  */
   4
   5 #include <stdint.h>
   6 #include <inttypes.h>
   7 #include <unistd.h>
   8 #include <signal.h>
   9 #include <getopt.h>
  10
  11 #include <rte_eal.h>
  12 #include <rte_ethdev.h>
  13 #include <rte_cycles.h>
  14 #include <rte_malloc.h>
  15 #include <rte_debug.h>
  16 #include <rte_prefetch.h>
  17 #include <rte_distributor.h>
  18 #include <rte_pause.h>
  19
  20 #define RX_RING_SIZE 1024
  21 #define TX_RING_SIZE 1024
  22 #define NUM_MBUFS ((64*1024)-1)
  23 #define MBUF_CACHE_SIZE 128
  24 #define BURST_SIZE 64
  25 #define SCHED_RX_RING_SZ 8192
  26 #define SCHED_TX_RING_SZ 65536
  27 #define BURST_SIZE_TX 32
  28
  29 #define RTE_LOGTYPE_DISTRAPP RTE_LOGTYPE_USER1
  30
  31 #define ANSI_COLOR_RED     "\x1b[31m"
  32 #define ANSI_COLOR_RESET   "\x1b[0m"
  33
  34 /* mask of enabled ports */
  35 static uint32_t enabled_port_mask;
  36 volatile uint8_t quit_signal;
  37 volatile uint8_t quit_signal_rx;
  38 volatile uint8_t quit_signal_dist;
  39 volatile uint8_t quit_signal_work;
  40
  41 static volatile struct app_stats {
  42         struct {
  43                 uint64_t rx_pkts;
  44                 uint64_t returned_pkts;
  45                 uint64_t enqueued_pkts;
  46                 uint64_t enqdrop_pkts;
  47         } rx __rte_cache_aligned;
  48         int pad1 __rte_cache_aligned;
  49
  50         struct {
  51                 uint64_t in_pkts;
  52                 uint64_t ret_pkts;
  53                 uint64_t sent_pkts;
  54                 uint64_t enqdrop_pkts;
  55         } dist __rte_cache_aligned;
  56         int pad2 __rte_cache_aligned;
  57
  58         struct {
  59                 uint64_t dequeue_pkts;
  60                 uint64_t tx_pkts;
  61                 uint64_t enqdrop_pkts;
  62         } tx __rte_cache_aligned;
  63         int pad3 __rte_cache_aligned;
  64
  65         uint64_t worker_pkts[64] __rte_cache_aligned;
  66
  67         int pad4 __rte_cache_aligned;
  68
  69         uint64_t worker_bursts[64][8] __rte_cache_aligned;
  70
  71         int pad5 __rte_cache_aligned;
  72
  73         uint64_t port_rx_pkts[64] __rte_cache_aligned;
  74         uint64_t port_tx_pkts[64] __rte_cache_aligned;
  75 } app_stats;
  76
  77 struct app_stats prev_app_stats;
  78
  79 static const struct rte_eth_conf port_conf_default = {
  80         .rxmode = {
  81                 .mq_mode = ETH_MQ_RX_RSS,
  82                 .max_rx_pkt_len = ETHER_MAX_LEN,
  83         },
  84         .txmode = {
  85                 .mq_mode = ETH_MQ_TX_NONE,
  86         },
  87         .rx_adv_conf = {
  88                 .rss_conf = {
  89                         .rss_hf = ETH_RSS_IP | ETH_RSS_UDP |
  90                                 ETH_RSS_TCP | ETH_RSS_SCTP,
  91                 }
  92         },
  93 };
  94
  95 struct output_buffer {
  96         unsigned count;
  97         struct rte_mbuf *mbufs[BURST_SIZE];
  98 };
  99
 100 static void print_stats(void);
 101
 102 /*
 103  * Initialises a given port using global settings and with the rx buffers
 104  * coming from the mbuf_pool passed as parameter
 105  */
 106 static inline int
 107 port_init(uint16_t port, struct rte_mempool *mbuf_pool)
 108 {
 109         struct rte_eth_conf port_conf = port_conf_default;
 110         const uint16_t rxRings = 1, txRings = rte_lcore_count() - 1;
 111         int retval;
 112         uint16_t q;
 113         uint16_t nb_rxd = RX_RING_SIZE;
 114         uint16_t nb_txd = TX_RING_SIZE;
 115         struct rte_eth_dev_info dev_info;
 116         struct rte_eth_txconf txconf;
 117
 118         if (!rte_eth_dev_is_valid_port(port))
 119                 return -1;
 120
 121         rte_eth_dev_info_get(port, &dev_info);
 122         if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 123                 port_conf.txmode.offloads |=
 124                         DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 125
 126         retval = rte_eth_dev_configure(port, rxRings, txRings, &port_conf);
 127         if (retval != 0)
 128                 return retval;
 129
 130         retval = rte_eth_dev_adjust_nb_rx_tx_desc(port, &nb_rxd, &nb_txd);
 131         if (retval != 0)
 132                 return retval;
 133
 134         for (q = 0; q < rxRings; q++) {
 135                 retval = rte_eth_rx_queue_setup(port, q, nb_rxd,
 136                                                 rte_eth_dev_socket_id(port),
 137                                                 NULL, mbuf_pool);
 138                 if (retval < 0)
 139                         return retval;
 140         }
 141
 142         txconf = dev_info.default_txconf;
 143         txconf.offloads = port_conf.txmode.offloads;
 144         for (q = 0; q < txRings; q++) {
 145                 retval = rte_eth_tx_queue_setup(port, q, nb_txd,
 146                                                 rte_eth_dev_socket_id(port),
 147                                                 &txconf);
 148                 if (retval < 0)
 149                         return retval;
 150         }
 151
 152         retval = rte_eth_dev_start(port);
 153         if (retval < 0)
 154                 return retval;
 155
 156         struct rte_eth_link link;
 157         rte_eth_link_get_nowait(port, &link);
 158         while (!link.link_status) {
 159                 printf("Waiting for Link up on port %"PRIu16"\n", port);
 160                 sleep(1);
 161                 rte_eth_link_get_nowait(port, &link);
 162         }
 163
 164         if (!link.link_status) {
 165                 printf("Link down on port %"PRIu16"\n", port);
 166                 return 0;
 167         }
 168
 169         struct ether_addr addr;
 170         rte_eth_macaddr_get(port, &addr);
 171         printf("Port %u MAC: %02"PRIx8" %02"PRIx8" %02"PRIx8
 172                         " %02"PRIx8" %02"PRIx8" %02"PRIx8"\n",
 173                         port,
 174                         addr.addr_bytes[0], addr.addr_bytes[1],
 175                         addr.addr_bytes[2], addr.addr_bytes[3],
 176                         addr.addr_bytes[4], addr.addr_bytes[5]);
 177
 178         rte_eth_promiscuous_enable(port);
 179
 180         return 0;
 181 }
 182
 183 struct lcore_params {
 184         unsigned worker_id;
 185         struct rte_distributor *d;
 186         struct rte_ring *rx_dist_ring;
 187         struct rte_ring *dist_tx_ring;
 188         struct rte_mempool *mem_pool;
 189 };
 190
 191 static int
 192 lcore_rx(struct lcore_params *p)
 193 {
 194         const uint16_t nb_ports = rte_eth_dev_count_avail();
 195         const int socket_id = rte_socket_id();
 196         uint16_t port;
 197         struct rte_mbuf *bufs[BURST_SIZE*2];
 198
 199         RTE_ETH_FOREACH_DEV(port) {
 200                 /* skip ports that are not enabled */
 201                 if ((enabled_port_mask & (1 << port)) == 0)
 202                         continue;
 203
 204                 if (rte_eth_dev_socket_id(port) > 0 &&
 205                                 rte_eth_dev_socket_id(port) != socket_id)
 206                         printf("WARNING, port %u is on remote NUMA node to "
 207                                         "RX thread.\n\tPerformance will not "
 208                                         "be optimal.\n", port);
 209         }
 210
 211         printf("\nCore %u doing packet RX.\n", rte_lcore_id());
 212         port = 0;
 213         while (!quit_signal_rx) {
 214
 215                 /* skip ports that are not enabled */
 216                 if ((enabled_port_mask & (1 << port)) == 0) {
 217                         if (++port == nb_ports)
 218                                 port = 0;
 219                         continue;
 220                 }
 221                 const uint16_t nb_rx = rte_eth_rx_burst(port, 0, bufs,
 222                                 BURST_SIZE);
 223                 if (unlikely(nb_rx == 0)) {
 224                         if (++port == nb_ports)
 225                                 port = 0;
 226                         continue;
 227                 }
 228                 app_stats.rx.rx_pkts += nb_rx;
 229
 230 /*
 231  * You can run the distributor on the rx core with this code. Returned
 232  * packets are then send straight to the tx core.
 233  */
 234 #if 0
 235         rte_distributor_process(d, bufs, nb_rx);
 236         const uint16_t nb_ret = rte_distributor_returned_pktsd,
 237                         bufs, BURST_SIZE*2);
 238
 239                 app_stats.rx.returned_pkts += nb_ret;
 240                 if (unlikely(nb_ret == 0)) {
 241                         if (++port == nb_ports)
 242                                 port = 0;
 243                         continue;
 244                 }
 245
 246                 struct rte_ring *tx_ring = p->dist_tx_ring;
 247                 uint16_t sent = rte_ring_enqueue_burst(tx_ring,
 248                                 (void *)bufs, nb_ret, NULL);
 249 #else
 250                 uint16_t nb_ret = nb_rx;
 251                 /*
 252                  * Swap the following two lines if you want the rx traffic
 253                  * to go directly to tx, no distribution.
 254                  */
 255                 struct rte_ring *out_ring = p->rx_dist_ring;
 256                 /* struct rte_ring *out_ring = p->dist_tx_ring; */
 257
 258                 uint16_t sent = rte_ring_enqueue_burst(out_ring,
 259                                 (void *)bufs, nb_ret, NULL);
 260 #endif
 261
 262                 app_stats.rx.enqueued_pkts += sent;
 263                 if (unlikely(sent < nb_ret)) {
 264                         app_stats.rx.enqdrop_pkts +=  nb_ret - sent;
 265                         RTE_LOG_DP(DEBUG, DISTRAPP,
 266                                 "%s:Packet loss due to full ring\n", __func__);
 267                         while (sent < nb_ret)
 268                                 rte_pktmbuf_free(bufs[sent++]);
 269                 }
 270                 if (++port == nb_ports)
 271                         port = 0;
 272         }
 273         /* set worker & tx threads quit flag */
 274         printf("\nCore %u exiting rx task.\n", rte_lcore_id());
 275         quit_signal = 1;
 276         return 0;
 277 }
 278
 279 static inline void
 280 flush_one_port(struct output_buffer *outbuf, uint8_t outp)
 281 {
 282         unsigned int nb_tx = rte_eth_tx_burst(outp, 0,
 283                         outbuf->mbufs, outbuf->count);
 284         app_stats.tx.tx_pkts += outbuf->count;
 285
 286         if (unlikely(nb_tx < outbuf->count)) {
 287                 app_stats.tx.enqdrop_pkts +=  outbuf->count - nb_tx;
 288                 do {
 289                         rte_pktmbuf_free(outbuf->mbufs[nb_tx]);
 290                 } while (++nb_tx < outbuf->count);
 291         }
 292         outbuf->count = 0;
 293 }
 294
 295 static inline void
 296 flush_all_ports(struct output_buffer *tx_buffers)
 297 {
 298         uint16_t outp;
 299
 300         RTE_ETH_FOREACH_DEV(outp) {
 301                 /* skip ports that are not enabled */
 302                 if ((enabled_port_mask & (1 << outp)) == 0)
 303                         continue;
 304
 305                 if (tx_buffers[outp].count == 0)
 306                         continue;
 307
 308                 flush_one_port(&tx_buffers[outp], outp);
 309         }
 310 }
 311
 312
 313
 314 static int
 315 lcore_distributor(struct lcore_params *p)
 316 {
 317         struct rte_ring *in_r = p->rx_dist_ring;
 318         struct rte_ring *out_r = p->dist_tx_ring;
 319         struct rte_mbuf *bufs[BURST_SIZE * 4];
 320         struct rte_distributor *d = p->d;
 321
 322         printf("\nCore %u acting as distributor core.\n", rte_lcore_id());
 323         while (!quit_signal_dist) {
 324                 const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
 325                                 (void *)bufs, BURST_SIZE*1, NULL);
 326                 if (nb_rx) {
 327                         app_stats.dist.in_pkts += nb_rx;
 328
 329                         /* Distribute the packets */
 330                         rte_distributor_process(d, bufs, nb_rx);
 331                         /* Handle Returns */
 332                         const uint16_t nb_ret =
 333                                 rte_distributor_returned_pkts(d,
 334                                         bufs, BURST_SIZE*2);
 335
 336                         if (unlikely(nb_ret == 0))
 337                                 continue;
 338                         app_stats.dist.ret_pkts += nb_ret;
 339
 340                         uint16_t sent = rte_ring_enqueue_burst(out_r,
 341                                         (void *)bufs, nb_ret, NULL);
 342                         app_stats.dist.sent_pkts += sent;
 343                         if (unlikely(sent < nb_ret)) {
 344                                 app_stats.dist.enqdrop_pkts += nb_ret - sent;
 345                                 RTE_LOG(DEBUG, DISTRAPP,
 346                                         "%s:Packet loss due to full out ring\n",
 347                                         __func__);
 348                                 while (sent < nb_ret)
 349                                         rte_pktmbuf_free(bufs[sent++]);
 350                         }
 351                 }
 352         }
 353         printf("\nCore %u exiting distributor task.\n", rte_lcore_id());
 354         quit_signal_work = 1;
 355
 356         rte_distributor_flush(d);
 357         /* Unblock any returns so workers can exit */
 358         rte_distributor_clear_returns(d);
 359         quit_signal_rx = 1;
 360         return 0;
 361 }
 362
 363
 364 static int
 365 lcore_tx(struct rte_ring *in_r)
 366 {
 367         static struct output_buffer tx_buffers[RTE_MAX_ETHPORTS];
 368         const int socket_id = rte_socket_id();
 369         uint16_t port;
 370
 371         RTE_ETH_FOREACH_DEV(port) {
 372                 /* skip ports that are not enabled */
 373                 if ((enabled_port_mask & (1 << port)) == 0)
 374                         continue;
 375
 376                 if (rte_eth_dev_socket_id(port) > 0 &&
 377                                 rte_eth_dev_socket_id(port) != socket_id)
 378                         printf("WARNING, port %u is on remote NUMA node to "
 379                                         "TX thread.\n\tPerformance will not "
 380                                         "be optimal.\n", port);
 381         }
 382
 383         printf("\nCore %u doing packet TX.\n", rte_lcore_id());
 384         while (!quit_signal) {
 385
 386                 RTE_ETH_FOREACH_DEV(port) {
 387                         /* skip ports that are not enabled */
 388                         if ((enabled_port_mask & (1 << port)) == 0)
 389                                 continue;
 390
 391                         struct rte_mbuf *bufs[BURST_SIZE_TX];
 392                         const uint16_t nb_rx = rte_ring_dequeue_burst(in_r,
 393                                         (void *)bufs, BURST_SIZE_TX, NULL);
 394                         app_stats.tx.dequeue_pkts += nb_rx;
 395
 396                         /* if we get no traffic, flush anything we have */
 397                         if (unlikely(nb_rx == 0)) {
 398                                 flush_all_ports(tx_buffers);
 399                                 continue;
 400                         }
 401
 402                         /* for traffic we receive, queue it up for transmit */
 403                         uint16_t i;
 404                         rte_prefetch_non_temporal((void *)bufs[0]);
 405                         rte_prefetch_non_temporal((void *)bufs[1]);
 406                         rte_prefetch_non_temporal((void *)bufs[2]);
 407                         for (i = 0; i < nb_rx; i++) {
 408                                 struct output_buffer *outbuf;
 409                                 uint8_t outp;
 410                                 rte_prefetch_non_temporal((void *)bufs[i + 3]);
 411                                 /*
 412                                  * workers should update in_port to hold the
 413                                  * output port value
 414                                  */
 415                                 outp = bufs[i]->port;
 416                                 /* skip ports that are not enabled */
 417                                 if ((enabled_port_mask & (1 << outp)) == 0)
 418                                         continue;
 419
 420                                 outbuf = &tx_buffers[outp];
 421                                 outbuf->mbufs[outbuf->count++] = bufs[i];
 422                                 if (outbuf->count == BURST_SIZE_TX)
 423                                         flush_one_port(outbuf, outp);
 424                         }
 425                 }
 426         }
 427         printf("\nCore %u exiting tx task.\n", rte_lcore_id());
 428         return 0;
 429 }
 430
 431 static void
 432 int_handler(int sig_num)
 433 {
 434         printf("Exiting on signal %d\n", sig_num);
 435         /* set quit flag for rx thread to exit */
 436         quit_signal_dist = 1;
 437 }
 438
 439 static void
 440 print_stats(void)
 441 {
 442         struct rte_eth_stats eth_stats;
 443         unsigned int i, j;
 444         const unsigned int num_workers = rte_lcore_count() - 4;
 445
 446         RTE_ETH_FOREACH_DEV(i) {
 447                 rte_eth_stats_get(i, &eth_stats);
 448                 app_stats.port_rx_pkts[i] = eth_stats.ipackets;
 449                 app_stats.port_tx_pkts[i] = eth_stats.opackets;
 450         }
 451
 452         printf("\n\nRX Thread:\n");
 453         RTE_ETH_FOREACH_DEV(i) {
 454                 printf("Port %u Pktsin : %5.2f\n", i,
 455                                 (app_stats.port_rx_pkts[i] -
 456                                 prev_app_stats.port_rx_pkts[i])/1000000.0);
 457                 prev_app_stats.port_rx_pkts[i] = app_stats.port_rx_pkts[i];
 458         }
 459         printf(" - Received:    %5.2f\n",
 460                         (app_stats.rx.rx_pkts -
 461                         prev_app_stats.rx.rx_pkts)/1000000.0);
 462         printf(" - Returned:    %5.2f\n",
 463                         (app_stats.rx.returned_pkts -
 464                         prev_app_stats.rx.returned_pkts)/1000000.0);
 465         printf(" - Enqueued:    %5.2f\n",
 466                         (app_stats.rx.enqueued_pkts -
 467                         prev_app_stats.rx.enqueued_pkts)/1000000.0);
 468         printf(" - Dropped:     %s%5.2f%s\n", ANSI_COLOR_RED,
 469                         (app_stats.rx.enqdrop_pkts -
 470                         prev_app_stats.rx.enqdrop_pkts)/1000000.0,
 471                         ANSI_COLOR_RESET);
 472
 473         printf("Distributor thread:\n");
 474         printf(" - In:          %5.2f\n",
 475                         (app_stats.dist.in_pkts -
 476                         prev_app_stats.dist.in_pkts)/1000000.0);
 477         printf(" - Returned:    %5.2f\n",
 478                         (app_stats.dist.ret_pkts -
 479                         prev_app_stats.dist.ret_pkts)/1000000.0);
 480         printf(" - Sent:        %5.2f\n",
 481                         (app_stats.dist.sent_pkts -
 482                         prev_app_stats.dist.sent_pkts)/1000000.0);
 483         printf(" - Dropped      %s%5.2f%s\n", ANSI_COLOR_RED,
 484                         (app_stats.dist.enqdrop_pkts -
 485                         prev_app_stats.dist.enqdrop_pkts)/1000000.0,
 486                         ANSI_COLOR_RESET);
 487
 488         printf("TX thread:\n");
 489         printf(" - Dequeued:    %5.2f\n",
 490                         (app_stats.tx.dequeue_pkts -
 491                         prev_app_stats.tx.dequeue_pkts)/1000000.0);
 492         RTE_ETH_FOREACH_DEV(i) {
 493                 printf("Port %u Pktsout: %5.2f\n",
 494                                 i, (app_stats.port_tx_pkts[i] -
 495                                 prev_app_stats.port_tx_pkts[i])/1000000.0);
 496                 prev_app_stats.port_tx_pkts[i] = app_stats.port_tx_pkts[i];
 497         }
 498         printf(" - Transmitted: %5.2f\n",
 499                         (app_stats.tx.tx_pkts -
 500                         prev_app_stats.tx.tx_pkts)/1000000.0);
 501         printf(" - Dropped:     %s%5.2f%s\n", ANSI_COLOR_RED,
 502                         (app_stats.tx.enqdrop_pkts -
 503                         prev_app_stats.tx.enqdrop_pkts)/1000000.0,
 504                         ANSI_COLOR_RESET);
 505
 506         prev_app_stats.rx.rx_pkts = app_stats.rx.rx_pkts;
 507         prev_app_stats.rx.returned_pkts = app_stats.rx.returned_pkts;
 508         prev_app_stats.rx.enqueued_pkts = app_stats.rx.enqueued_pkts;
 509         prev_app_stats.rx.enqdrop_pkts = app_stats.rx.enqdrop_pkts;
 510         prev_app_stats.dist.in_pkts = app_stats.dist.in_pkts;
 511         prev_app_stats.dist.ret_pkts = app_stats.dist.ret_pkts;
 512         prev_app_stats.dist.sent_pkts = app_stats.dist.sent_pkts;
 513         prev_app_stats.dist.enqdrop_pkts = app_stats.dist.enqdrop_pkts;
 514         prev_app_stats.tx.dequeue_pkts = app_stats.tx.dequeue_pkts;
 515         prev_app_stats.tx.tx_pkts = app_stats.tx.tx_pkts;
 516         prev_app_stats.tx.enqdrop_pkts = app_stats.tx.enqdrop_pkts;
 517
 518         for (i = 0; i < num_workers; i++) {
 519                 printf("Worker %02u Pkts: %5.2f. Bursts(1-8): ", i,
 520                                 (app_stats.worker_pkts[i] -
 521                                 prev_app_stats.worker_pkts[i])/1000000.0);
 522                 for (j = 0; j < 8; j++) {
 523                         printf("%"PRIu64" ", app_stats.worker_bursts[i][j]);
 524                         app_stats.worker_bursts[i][j] = 0;
 525                 }
 526                 printf("\n");
 527                 prev_app_stats.worker_pkts[i] = app_stats.worker_pkts[i];
 528         }
 529 }
 530
 531 static int
 532 lcore_worker(struct lcore_params *p)
 533 {
 534         struct rte_distributor *d = p->d;
 535         const unsigned id = p->worker_id;
 536         unsigned int num = 0;
 537         unsigned int i;
 538
 539         /*
 540          * for single port, xor_val will be zero so we won't modify the output
 541          * port, otherwise we send traffic from 0 to 1, 2 to 3, and vice versa
 542          */
 543         const unsigned xor_val = (rte_eth_dev_count_avail() > 1);
 544         struct rte_mbuf *buf[8] __rte_cache_aligned;
 545
 546         for (i = 0; i < 8; i++)
 547                 buf[i] = NULL;
 548
 549         app_stats.worker_pkts[p->worker_id] = 1;
 550
 551         printf("\nCore %u acting as worker core.\n", rte_lcore_id());
 552         while (!quit_signal_work) {
 553                 num = rte_distributor_get_pkt(d, id, buf, buf, num);
 554                 /* Do a little bit of work for each packet */
 555                 for (i = 0; i < num; i++) {
 556                         uint64_t t = rte_rdtsc()+100;
 557
 558                         while (rte_rdtsc() < t)
 559                                 rte_pause();
 560                         buf[i]->port ^= xor_val;
 561                 }
 562
 563                 app_stats.worker_pkts[p->worker_id] += num;
 564                 if (num > 0)
 565                         app_stats.worker_bursts[p->worker_id][num-1]++;
 566         }
 567         return 0;
 568 }
 569
 570 /* display usage */
 571 static void
 572 print_usage(const char *prgname)
 573 {
 574         printf("%s [EAL options] -- -p PORTMASK\n"
 575                         "  -p PORTMASK: hexadecimal bitmask of ports to configure\n",
 576                         prgname);
 577 }
 578
 579 static int
 580 parse_portmask(const char *portmask)
 581 {
 582         char *end = NULL;
 583         unsigned long pm;
 584
 585         /* parse hexadecimal string */
 586         pm = strtoul(portmask, &end, 16);
 587         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 588                 return -1;
 589
 590         if (pm == 0)
 591                 return -1;
 592
 593         return pm;
 594 }
 595
 596 /* Parse the argument given in the command line of the application */
 597 static int
 598 parse_args(int argc, char **argv)
 599 {
 600         int opt;
 601         char **argvopt;
 602         int option_index;
 603         char *prgname = argv[0];
 604         static struct option lgopts[] = {
 605                 {NULL, 0, 0, 0}
 606         };
 607
 608         argvopt = argv;
 609
 610         while ((opt = getopt_long(argc, argvopt, "p:",
 611                         lgopts, &option_index)) != EOF) {
 612
 613                 switch (opt) {
 614                 /* portmask */
 615                 case 'p':
 616                         enabled_port_mask = parse_portmask(optarg);
 617                         if (enabled_port_mask == 0) {
 618                                 printf("invalid portmask\n");
 619                                 print_usage(prgname);
 620                                 return -1;
 621                         }
 622                         break;
 623
 624                 default:
 625                         print_usage(prgname);
 626                         return -1;
 627                 }
 628         }
 629
 630         if (optind <= 1) {
 631                 print_usage(prgname);
 632                 return -1;
 633         }
 634
 635         argv[optind-1] = prgname;
 636
 637         optind = 1; /* reset getopt lib */
 638         return 0;
 639 }
 640
 641 /* Main function, does initialization and calls the per-lcore functions */
 642 int
 643 main(int argc, char *argv[])
 644 {
 645         struct rte_mempool *mbuf_pool;
 646         struct rte_distributor *d;
 647         struct rte_ring *dist_tx_ring;
 648         struct rte_ring *rx_dist_ring;
 649         unsigned lcore_id, worker_id = 0;
 650         unsigned nb_ports;
 651         uint16_t portid;
 652         uint16_t nb_ports_available;
 653         uint64_t t, freq;
 654
 655         /* catch ctrl-c so we can print on exit */
 656         signal(SIGINT, int_handler);
 657
 658         /* init EAL */
 659         int ret = rte_eal_init(argc, argv);
 660         if (ret < 0)
 661                 rte_exit(EXIT_FAILURE, "Error with EAL initialization\n");
 662         argc -= ret;
 663         argv += ret;
 664
 665         /* parse application arguments (after the EAL ones) */
 666         ret = parse_args(argc, argv);
 667         if (ret < 0)
 668                 rte_exit(EXIT_FAILURE, "Invalid distributor parameters\n");
 669
 670         if (rte_lcore_count() < 5)
 671                 rte_exit(EXIT_FAILURE, "Error, This application needs at "
 672                                 "least 5 logical cores to run:\n"
 673                                 "1 lcore for stats (can be core 0)\n"
 674                                 "1 lcore for packet RX\n"
 675                                 "1 lcore for distribution\n"
 676                                 "1 lcore for packet TX\n"
 677                                 "and at least 1 lcore for worker threads\n");
 678
 679         nb_ports = rte_eth_dev_count_avail();
 680         if (nb_ports == 0)
 681                 rte_exit(EXIT_FAILURE, "Error: no ethernet ports detected\n");
 682         if (nb_ports != 1 && (nb_ports & 1))
 683                 rte_exit(EXIT_FAILURE, "Error: number of ports must be even, except "
 684                                 "when using a single port\n");
 685
 686         mbuf_pool = rte_pktmbuf_pool_create("MBUF_POOL",
 687                 NUM_MBUFS * nb_ports, MBUF_CACHE_SIZE, 0,
 688                 RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 689         if (mbuf_pool == NULL)
 690                 rte_exit(EXIT_FAILURE, "Cannot create mbuf pool\n");
 691         nb_ports_available = nb_ports;
 692
 693         /* initialize all ports */
 694         RTE_ETH_FOREACH_DEV(portid) {
 695                 /* skip ports that are not enabled */
 696                 if ((enabled_port_mask & (1 << portid)) == 0) {
 697                         printf("\nSkipping disabled port %d\n", portid);
 698                         nb_ports_available--;
 699                         continue;
 700                 }
 701                 /* init port */
 702                 printf("Initializing port %u... done\n", portid);
 703
 704                 if (port_init(portid, mbuf_pool) != 0)
 705                         rte_exit(EXIT_FAILURE, "Cannot initialize port %u\n",
 706                                         portid);
 707         }
 708
 709         if (!nb_ports_available) {
 710                 rte_exit(EXIT_FAILURE,
 711                                 "All available ports are disabled. Please set portmask.\n");
 712         }
 713
 714         d = rte_distributor_create("PKT_DIST", rte_socket_id(),
 715                         rte_lcore_count() - 4,
 716                         RTE_DIST_ALG_BURST);
 717         if (d == NULL)
 718                 rte_exit(EXIT_FAILURE, "Cannot create distributor\n");
 719
 720         /*
 721          * scheduler ring is read by the transmitter core, and written to
 722          * by scheduler core
 723          */
 724         dist_tx_ring = rte_ring_create("Output_ring", SCHED_TX_RING_SZ,
 725                         rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
 726         if (dist_tx_ring == NULL)
 727                 rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
 728
 729         rx_dist_ring = rte_ring_create("Input_ring", SCHED_RX_RING_SZ,
 730                         rte_socket_id(), RING_F_SC_DEQ | RING_F_SP_ENQ);
 731         if (rx_dist_ring == NULL)
 732                 rte_exit(EXIT_FAILURE, "Cannot create output ring\n");
 733
 734         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 735                 if (worker_id == rte_lcore_count() - 3) {
 736                         printf("Starting distributor on lcore_id %d\n",
 737                                         lcore_id);
 738                         /* distributor core */
 739                         struct lcore_params *p =
 740                                         rte_malloc(NULL, sizeof(*p), 0);
 741                         if (!p)
 742                                 rte_panic("malloc failure\n");
 743                         *p = (struct lcore_params){worker_id, d,
 744                                 rx_dist_ring, dist_tx_ring, mbuf_pool};
 745                         rte_eal_remote_launch(
 746                                 (lcore_function_t *)lcore_distributor,
 747                                 p, lcore_id);
 748                 } else if (worker_id == rte_lcore_count() - 4) {
 749                         printf("Starting tx  on worker_id %d, lcore_id %d\n",
 750                                         worker_id, lcore_id);
 751                         /* tx core */
 752                         rte_eal_remote_launch((lcore_function_t *)lcore_tx,
 753                                         dist_tx_ring, lcore_id);
 754                 } else if (worker_id == rte_lcore_count() - 2) {
 755                         printf("Starting rx on worker_id %d, lcore_id %d\n",
 756                                         worker_id, lcore_id);
 757                         /* rx core */
 758                         struct lcore_params *p =
 759                                         rte_malloc(NULL, sizeof(*p), 0);
 760                         if (!p)
 761                                 rte_panic("malloc failure\n");
 762                         *p = (struct lcore_params){worker_id, d, rx_dist_ring,
 763                                         dist_tx_ring, mbuf_pool};
 764                         rte_eal_remote_launch((lcore_function_t *)lcore_rx,
 765                                         p, lcore_id);
 766                 } else {
 767                         printf("Starting worker on worker_id %d, lcore_id %d\n",
 768                                         worker_id, lcore_id);
 769                         struct lcore_params *p =
 770                                         rte_malloc(NULL, sizeof(*p), 0);
 771                         if (!p)
 772                                 rte_panic("malloc failure\n");
 773                         *p = (struct lcore_params){worker_id, d, rx_dist_ring,
 774                                         dist_tx_ring, mbuf_pool};
 775
 776                         rte_eal_remote_launch((lcore_function_t *)lcore_worker,
 777                                         p, lcore_id);
 778                 }
 779                 worker_id++;
 780         }
 781
 782         freq = rte_get_timer_hz();
 783         t = rte_rdtsc() + freq;
 784         while (!quit_signal_dist) {
 785                 if (t < rte_rdtsc()) {
 786                         print_stats();
 787                         t = rte_rdtsc() + freq;
 788                 }
 789                 usleep(1000);
 790         }
 791
 792         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 793                 if (rte_eal_wait_lcore(lcore_id) < 0)
 794                         return -1;
 795         }
 796
 797         print_stats();
 798         return 0;
 799 }