examples/l2fwd-jobstats/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation
   3  */
   4
   5 #include <locale.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <stdint.h>
   9 #include <ctype.h>
  10 #include <getopt.h>
  11
  12 #include <rte_common.h>
  13 #include <rte_log.h>
  14 #include <rte_malloc.h>
  15 #include <rte_memory.h>
  16 #include <rte_memcpy.h>
  17 #include <rte_eal.h>
  18 #include <rte_launch.h>
  19 #include <rte_atomic.h>
  20 #include <rte_cycles.h>
  21 #include <rte_prefetch.h>
  22 #include <rte_lcore.h>
  23 #include <rte_per_lcore.h>
  24 #include <rte_branch_prediction.h>
  25 #include <rte_interrupts.h>
  26 #include <rte_debug.h>
  27 #include <rte_ether.h>
  28 #include <rte_ethdev.h>
  29 #include <rte_mempool.h>
  30 #include <rte_mbuf.h>
  31 #include <rte_spinlock.h>
  32
  33 #include <rte_errno.h>
  34 #include <rte_jobstats.h>
  35 #include <rte_timer.h>
  36 #include <rte_alarm.h>
  37 #include <rte_pause.h>
  38
  39 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  40
  41 #define NB_MBUF   8192
  42
  43 #define MAX_PKT_BURST 32
  44 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  45
  46 /*
  47  * Configurable number of RX/TX ring descriptors
  48  */
  49 #define RTE_TEST_RX_DESC_DEFAULT 1024
  50 #define RTE_TEST_TX_DESC_DEFAULT 1024
  51 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  52 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  53
  54 /* ethernet addresses of ports */
  55 static struct rte_ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  56
  57 /* mask of enabled ports */
  58 static uint32_t l2fwd_enabled_port_mask;
  59
  60 /* list of enabled ports */
  61 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  62
  63 #define UPDATE_STEP_UP 1
  64 #define UPDATE_STEP_DOWN 32
  65
  66 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  67
  68 #define MAX_RX_QUEUE_PER_LCORE 16
  69 #define MAX_TX_QUEUE_PER_PORT 16
  70 struct lcore_queue_conf {
  71         unsigned n_rx_port;
  72         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  73         uint64_t next_flush_time[RTE_MAX_ETHPORTS];
  74
  75         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
  76         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
  77
  78         struct rte_timer flush_timer;
  79         struct rte_jobstats flush_job;
  80         struct rte_jobstats idle_job;
  81         struct rte_jobstats_context jobs_context;
  82
  83         rte_atomic16_t stats_read_pending;
  84         rte_spinlock_t lock;
  85 } __rte_cache_aligned;
  86 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  87
  88 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  89
  90 static struct rte_eth_conf port_conf = {
  91         .rxmode = {
  92                 .split_hdr_size = 0,
  93         },
  94         .txmode = {
  95                 .mq_mode = ETH_MQ_TX_NONE,
  96         },
  97 };
  98
  99 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 100
 101 /* Per-port statistics struct */
 102 struct l2fwd_port_statistics {
 103         uint64_t tx;
 104         uint64_t rx;
 105         uint64_t dropped;
 106 } __rte_cache_aligned;
 107 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 108
 109 /* 1 day max */
 110 #define MAX_TIMER_PERIOD 86400
 111 /* default period is 10 seconds */
 112 static int64_t timer_period = 10;
 113 /* default timer frequency */
 114 static double hz;
 115 /* BURST_TX_DRAIN_US converted to cycles */
 116 uint64_t drain_tsc;
 117 /* Convert cycles to ns */
 118 static inline double
 119 cycles_to_ns(uint64_t cycles)
 120 {
 121         double t = cycles;
 122
 123         t *= (double)NS_PER_S;
 124         t /= hz;
 125         return t;
 126 }
 127
 128 static void
 129 show_lcore_stats(unsigned lcore_id)
 130 {
 131         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 132         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 133         struct rte_jobstats *job;
 134         uint8_t i;
 135
 136         /* LCore statistics. */
 137         uint64_t stats_period, loop_count;
 138         uint64_t exec, exec_min, exec_max;
 139         uint64_t management, management_min, management_max;
 140         uint64_t busy, busy_min, busy_max;
 141
 142         /* Jobs statistics. */
 143         const uint16_t port_cnt = qconf->n_rx_port;
 144         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 145         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 146                                 jobs_exec_max[port_cnt];
 147
 148         uint64_t flush_exec_cnt, flush_period;
 149         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 150
 151         uint64_t idle_exec_cnt;
 152         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 153         uint64_t collection_time = rte_get_timer_cycles();
 154
 155         /* Ask forwarding thread to give us stats. */
 156         rte_atomic16_set(&qconf->stats_read_pending, 1);
 157         rte_spinlock_lock(&qconf->lock);
 158         rte_atomic16_set(&qconf->stats_read_pending, 0);
 159
 160         /* Collect context statistics. */
 161         stats_period = ctx->state_time - ctx->start_time;
 162         loop_count = ctx->loop_cnt;
 163
 164         exec = ctx->exec_time;
 165         exec_min = ctx->min_exec_time;
 166         exec_max = ctx->max_exec_time;
 167
 168         management = ctx->management_time;
 169         management_min = ctx->min_management_time;
 170         management_max = ctx->max_management_time;
 171
 172         rte_jobstats_context_reset(ctx);
 173
 174         for (i = 0; i < port_cnt; i++) {
 175                 job = &qconf->port_fwd_jobs[i];
 176
 177                 jobs_exec_cnt[i] = job->exec_cnt;
 178                 jobs_period[i] = job->period;
 179
 180                 jobs_exec[i] = job->exec_time;
 181                 jobs_exec_min[i] = job->min_exec_time;
 182                 jobs_exec_max[i] = job->max_exec_time;
 183
 184                 rte_jobstats_reset(job);
 185         }
 186
 187         flush_exec_cnt = qconf->flush_job.exec_cnt;
 188         flush_period = qconf->flush_job.period;
 189         flush_exec = qconf->flush_job.exec_time;
 190         flush_exec_min = qconf->flush_job.min_exec_time;
 191         flush_exec_max = qconf->flush_job.max_exec_time;
 192         rte_jobstats_reset(&qconf->flush_job);
 193
 194         idle_exec_cnt = qconf->idle_job.exec_cnt;
 195         idle_exec = qconf->idle_job.exec_time;
 196         idle_exec_min = qconf->idle_job.min_exec_time;
 197         idle_exec_max = qconf->idle_job.max_exec_time;
 198         rte_jobstats_reset(&qconf->idle_job);
 199
 200         rte_spinlock_unlock(&qconf->lock);
 201
 202         exec -= idle_exec;
 203         busy = exec + management;
 204         busy_min = exec_min + management_min;
 205         busy_max = exec_max + management_max;
 206
 207
 208         collection_time = rte_get_timer_cycles() - collection_time;
 209
 210 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 211
 212         printf("\n----------------"
 213                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 214                         "\n%-18s %14s %7s %10s %10s %10s "
 215                         "\n%-18s %'14.0f"
 216                         "\n%-18s %'14" PRIu64
 217                         STAT_FMT /* Exec */
 218                         STAT_FMT /* Management */
 219                         STAT_FMT /* Busy */
 220                         STAT_FMT, /* Idle  */
 221                         lcore_id, cycles_to_ns(collection_time),
 222                         "Stat type", "total", "%total", "avg", "min", "max",
 223                         "Stats duration:", cycles_to_ns(stats_period),
 224                         "Loop count:", loop_count,
 225                         "Exec time",
 226                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 227                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 228                         cycles_to_ns(exec_min),
 229                         cycles_to_ns(exec_max),
 230                         "Management time",
 231                         cycles_to_ns(management), management * 100.0 / stats_period,
 232                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 233                         cycles_to_ns(management_min),
 234                         cycles_to_ns(management_max),
 235                         "Exec + management",
 236                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 237                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 238                         cycles_to_ns(busy_min),
 239                         cycles_to_ns(busy_max),
 240                         "Idle (job)",
 241                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 242                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 243                         cycles_to_ns(idle_exec_min),
 244                         cycles_to_ns(idle_exec_max));
 245
 246         for (i = 0; i < qconf->n_rx_port; i++) {
 247                 job = &qconf->port_fwd_jobs[i];
 248                 printf("\n\nJob %" PRIu32 ": %-20s "
 249                                 "\n%-18s %'14" PRIu64
 250                                 "\n%-18s %'14.0f"
 251                                 STAT_FMT,
 252                                 i, job->name,
 253                                 "Exec count:", jobs_exec_cnt[i],
 254                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 255                                 "Exec time",
 256                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 257                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 258                                                 : 0),
 259                                 cycles_to_ns(jobs_exec_min[i]),
 260                                 cycles_to_ns(jobs_exec_max[i]));
 261         }
 262
 263         if (qconf->n_rx_port > 0) {
 264                 job = &qconf->flush_job;
 265                 printf("\n\nJob %" PRIu32 ": %-20s "
 266                                 "\n%-18s %'14" PRIu64
 267                                 "\n%-18s %'14.0f"
 268                                 STAT_FMT,
 269                                 i, job->name,
 270                                 "Exec count:", flush_exec_cnt,
 271                                 "Exec period: ", cycles_to_ns(flush_period),
 272                                 "Exec time",
 273                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 274                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 275                                 cycles_to_ns(flush_exec_min),
 276                                 cycles_to_ns(flush_exec_max));
 277         }
 278 }
 279
 280 /* Print out statistics on packets dropped */
 281 static void
 282 show_stats_cb(__rte_unused void *param)
 283 {
 284         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 285         unsigned portid, lcore_id;
 286
 287         total_packets_dropped = 0;
 288         total_packets_tx = 0;
 289         total_packets_rx = 0;
 290
 291         const char clr[] = { 27, '[', '2', 'J', '\0' };
 292         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 293
 294         /* Clear screen and move to top left */
 295         printf("%s%s"
 296                         "\nPort statistics ===================================",
 297                         clr, topLeft);
 298
 299         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 300                 /* skip disabled ports */
 301                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 302                         continue;
 303                 printf("\nStatistics for port %u ------------------------------"
 304                                 "\nPackets sent: %24"PRIu64
 305                                 "\nPackets received: %20"PRIu64
 306                                 "\nPackets dropped: %21"PRIu64,
 307                                 portid,
 308                                 port_statistics[portid].tx,
 309                                 port_statistics[portid].rx,
 310                                 port_statistics[portid].dropped);
 311
 312                 total_packets_dropped += port_statistics[portid].dropped;
 313                 total_packets_tx += port_statistics[portid].tx;
 314                 total_packets_rx += port_statistics[portid].rx;
 315         }
 316
 317         printf("\nAggregate statistics ==============================="
 318                         "\nTotal packets sent: %18"PRIu64
 319                         "\nTotal packets received: %14"PRIu64
 320                         "\nTotal packets dropped: %15"PRIu64
 321                         "\n====================================================",
 322                         total_packets_tx,
 323                         total_packets_rx,
 324                         total_packets_dropped);
 325
 326         RTE_LCORE_FOREACH(lcore_id) {
 327                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 328                         show_lcore_stats(lcore_id);
 329         }
 330
 331         printf("\n====================================================\n");
 332
 333         fflush(stdout);
 334
 335         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 336 }
 337
 338 static void
 339 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 340 {
 341         struct rte_ether_hdr *eth;
 342         void *tmp;
 343         int sent;
 344         unsigned dst_port;
 345         struct rte_eth_dev_tx_buffer *buffer;
 346
 347         dst_port = l2fwd_dst_ports[portid];
 348         eth = rte_pktmbuf_mtod(m, struct rte_ether_hdr *);
 349
 350         /* 02:00:00:00:00:xx */
 351         tmp = &eth->d_addr.addr_bytes[0];
 352         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 353
 354         /* src addr */
 355         rte_ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 356
 357         buffer = tx_buffer[dst_port];
 358         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 359         if (sent)
 360                 port_statistics[dst_port].tx += sent;
 361 }
 362
 363 static void
 364 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 365 {
 366         int64_t err = job->target - result;
 367         int64_t histeresis = job->target / 8;
 368
 369         if (err < -histeresis) {
 370                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 371                         job->period -= UPDATE_STEP_DOWN;
 372         } else if (err > histeresis) {
 373                 if (job->period + UPDATE_STEP_UP < job->max_period)
 374                         job->period += UPDATE_STEP_UP;
 375         }
 376 }
 377
 378 static void
 379 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 380 {
 381         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 382         struct rte_mbuf *m;
 383
 384         const uint16_t port_idx = (uintptr_t) arg;
 385         const unsigned lcore_id = rte_lcore_id();
 386         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 387         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 388         const uint16_t portid = qconf->rx_port_list[port_idx];
 389
 390         uint8_t j;
 391         uint16_t total_nb_rx;
 392
 393         rte_jobstats_start(&qconf->jobs_context, job);
 394
 395         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 396          * function must be called more frequently. */
 397
 398         total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 399                         MAX_PKT_BURST);
 400
 401         for (j = 0; j < total_nb_rx; j++) {
 402                 m = pkts_burst[j];
 403                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 404                 l2fwd_simple_forward(m, portid);
 405         }
 406
 407         if (total_nb_rx == MAX_PKT_BURST) {
 408                 const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 409                                 MAX_PKT_BURST);
 410
 411                 total_nb_rx += nb_rx;
 412                 for (j = 0; j < nb_rx; j++) {
 413                         m = pkts_burst[j];
 414                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 415                         l2fwd_simple_forward(m, portid);
 416                 }
 417         }
 418
 419         port_statistics[portid].rx += total_nb_rx;
 420
 421         /* Adjust period time in which we are running here. */
 422         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 423                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 424                                 lcore_id, l2fwd_fwd_job, arg);
 425         }
 426 }
 427
 428 static void
 429 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 430 {
 431         uint64_t now;
 432         unsigned lcore_id;
 433         struct lcore_queue_conf *qconf;
 434         uint16_t portid;
 435         unsigned i;
 436         uint32_t sent;
 437         struct rte_eth_dev_tx_buffer *buffer;
 438
 439         lcore_id = rte_lcore_id();
 440         qconf = &lcore_queue_conf[lcore_id];
 441
 442         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 443
 444         now = rte_get_timer_cycles();
 445         lcore_id = rte_lcore_id();
 446         qconf = &lcore_queue_conf[lcore_id];
 447
 448         for (i = 0; i < qconf->n_rx_port; i++) {
 449                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 450
 451                 if (qconf->next_flush_time[portid] <= now)
 452                         continue;
 453
 454                 buffer = tx_buffer[portid];
 455                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 456                 if (sent)
 457                         port_statistics[portid].tx += sent;
 458
 459                 qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
 460         }
 461
 462         /* Pass target to indicate that this job is happy of time interwal
 463          * in which it was called. */
 464         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 465 }
 466
 467 /* main processing loop */
 468 static void
 469 l2fwd_main_loop(void)
 470 {
 471         unsigned lcore_id;
 472         unsigned i, portid;
 473         struct lcore_queue_conf *qconf;
 474         uint8_t stats_read_pending = 0;
 475         uint8_t need_manage;
 476
 477         lcore_id = rte_lcore_id();
 478         qconf = &lcore_queue_conf[lcore_id];
 479
 480         if (qconf->n_rx_port == 0) {
 481                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 482                 return;
 483         }
 484
 485         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 486
 487         for (i = 0; i < qconf->n_rx_port; i++) {
 488
 489                 portid = qconf->rx_port_list[i];
 490                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 491                         portid);
 492         }
 493
 494         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 495
 496         for (;;) {
 497                 rte_spinlock_lock(&qconf->lock);
 498
 499                 do {
 500                         rte_jobstats_context_start(&qconf->jobs_context);
 501
 502                         /* Do the Idle job:
 503                          * - Read stats_read_pending flag
 504                          * - check if some real job need to be executed
 505                          */
 506                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 507
 508                         uint64_t repeats = 0;
 509
 510                         do {
 511                                 uint8_t i;
 512                                 uint64_t now = rte_get_timer_cycles();
 513
 514                                 repeats++;
 515                                 need_manage = qconf->flush_timer.expire < now;
 516                                 /* Check if we was esked to give a stats. */
 517                                 stats_read_pending =
 518                                                 rte_atomic16_read(&qconf->stats_read_pending);
 519                                 need_manage |= stats_read_pending;
 520
 521                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 522                                         need_manage = qconf->rx_timers[i].expire < now;
 523
 524                         } while (!need_manage);
 525
 526                         if (likely(repeats != 1))
 527                                 rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 528                         else
 529                                 rte_jobstats_abort(&qconf->idle_job);
 530
 531                         rte_timer_manage();
 532                         rte_jobstats_context_finish(&qconf->jobs_context);
 533                 } while (likely(stats_read_pending == 0));
 534
 535                 rte_spinlock_unlock(&qconf->lock);
 536                 rte_pause();
 537         }
 538 }
 539
 540 static int
 541 l2fwd_launch_one_lcore(__rte_unused void *dummy)
 542 {
 543         l2fwd_main_loop();
 544         return 0;
 545 }
 546
 547 /* display usage */
 548 static void
 549 l2fwd_usage(const char *prgname)
 550 {
 551         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 552                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 553                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 554                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 555                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 556                prgname);
 557 }
 558
 559 static int
 560 l2fwd_parse_portmask(const char *portmask)
 561 {
 562         char *end = NULL;
 563         unsigned long pm;
 564
 565         /* parse hexadecimal string */
 566         pm = strtoul(portmask, &end, 16);
 567         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 568                 return 0;
 569
 570         return pm;
 571 }
 572
 573 static unsigned int
 574 l2fwd_parse_nqueue(const char *q_arg)
 575 {
 576         char *end = NULL;
 577         unsigned long n;
 578
 579         /* parse hexadecimal string */
 580         n = strtoul(q_arg, &end, 10);
 581         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 582                 return 0;
 583         if (n == 0)
 584                 return 0;
 585         if (n >= MAX_RX_QUEUE_PER_LCORE)
 586                 return 0;
 587
 588         return n;
 589 }
 590
 591 static int
 592 l2fwd_parse_timer_period(const char *q_arg)
 593 {
 594         char *end = NULL;
 595         int n;
 596
 597         /* parse number string */
 598         n = strtol(q_arg, &end, 10);
 599         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 600                 return -1;
 601         if (n >= MAX_TIMER_PERIOD)
 602                 return -1;
 603
 604         return n;
 605 }
 606
 607 /* Parse the argument given in the command line of the application */
 608 static int
 609 l2fwd_parse_args(int argc, char **argv)
 610 {
 611         int opt, ret;
 612         char **argvopt;
 613         int option_index;
 614         char *prgname = argv[0];
 615         static struct option lgopts[] = {
 616                 {NULL, 0, 0, 0}
 617         };
 618
 619         argvopt = argv;
 620
 621         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 622                                   lgopts, &option_index)) != EOF) {
 623
 624                 switch (opt) {
 625                 /* portmask */
 626                 case 'p':
 627                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 628                         if (l2fwd_enabled_port_mask == 0) {
 629                                 printf("invalid portmask\n");
 630                                 l2fwd_usage(prgname);
 631                                 return -1;
 632                         }
 633                         break;
 634
 635                 /* nqueue */
 636                 case 'q':
 637                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 638                         if (l2fwd_rx_queue_per_lcore == 0) {
 639                                 printf("invalid queue number\n");
 640                                 l2fwd_usage(prgname);
 641                                 return -1;
 642                         }
 643                         break;
 644
 645                 /* timer period */
 646                 case 'T':
 647                         timer_period = l2fwd_parse_timer_period(optarg);
 648                         if (timer_period < 0) {
 649                                 printf("invalid timer period\n");
 650                                 l2fwd_usage(prgname);
 651                                 return -1;
 652                         }
 653                         break;
 654
 655                 /* For thousands separator in printf. */
 656                 case 'l':
 657                         setlocale(LC_ALL, "");
 658                         break;
 659
 660                 /* long options */
 661                 case 0:
 662                         l2fwd_usage(prgname);
 663                         return -1;
 664
 665                 default:
 666                         l2fwd_usage(prgname);
 667                         return -1;
 668                 }
 669         }
 670
 671         if (optind >= 0)
 672                 argv[optind-1] = prgname;
 673
 674         ret = optind-1;
 675         optind = 1; /* reset getopt lib */
 676         return ret;
 677 }
 678
 679 /* Check the link status of all ports in up to 9s, and print them finally */
 680 static void
 681 check_all_ports_link_status(uint32_t port_mask)
 682 {
 683 #define CHECK_INTERVAL 100 /* 100ms */
 684 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 685         uint16_t portid;
 686         uint8_t count, all_ports_up, print_flag = 0;
 687         struct rte_eth_link link;
 688         int ret;
 689         char link_status_text[RTE_ETH_LINK_MAX_STR_LEN];
 690
 691         printf("\nChecking link status");
 692         fflush(stdout);
 693         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 694                 all_ports_up = 1;
 695                 RTE_ETH_FOREACH_DEV(portid) {
 696                         if ((port_mask & (1 << portid)) == 0)
 697                                 continue;
 698                         memset(&link, 0, sizeof(link));
 699                         ret = rte_eth_link_get_nowait(portid, &link);
 700                         if (ret < 0) {
 701                                 all_ports_up = 0;
 702                                 if (print_flag == 1)
 703                                         printf("Port %u link get failed: %s\n",
 704                                                 portid, rte_strerror(-ret));
 705                                 continue;
 706                         }
 707                         /* print link status if flag set */
 708                         if (print_flag == 1) {
 709                                 rte_eth_link_to_str(link_status_text,
 710                                         sizeof(link_status_text), &link);
 711                                 printf("Port %d %s\n", portid,
 712                                        link_status_text);
 713                                 continue;
 714                         }
 715                         /* clear all_ports_up flag if any link down */
 716                         if (link.link_status == ETH_LINK_DOWN) {
 717                                 all_ports_up = 0;
 718                                 break;
 719                         }
 720                 }
 721                 /* after finally printing all link status, get out */
 722                 if (print_flag == 1)
 723                         break;
 724
 725                 if (all_ports_up == 0) {
 726                         printf(".");
 727                         fflush(stdout);
 728                         rte_delay_ms(CHECK_INTERVAL);
 729                 }
 730
 731                 /* set the print_flag if all ports up or timeout */
 732                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 733                         print_flag = 1;
 734                         printf("done\n");
 735                 }
 736         }
 737 }
 738
 739 int
 740 main(int argc, char **argv)
 741 {
 742         struct lcore_queue_conf *qconf;
 743         unsigned lcore_id, rx_lcore_id;
 744         unsigned nb_ports_in_mask = 0;
 745         int ret;
 746         char name[RTE_JOBSTATS_NAMESIZE];
 747         uint16_t nb_ports;
 748         uint16_t nb_ports_available = 0;
 749         uint16_t portid, last_port;
 750         uint8_t i;
 751
 752         /* init EAL */
 753         ret = rte_eal_init(argc, argv);
 754         if (ret < 0)
 755                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 756         argc -= ret;
 757         argv += ret;
 758
 759         /* parse application arguments (after the EAL ones) */
 760         ret = l2fwd_parse_args(argc, argv);
 761         if (ret < 0)
 762                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 763
 764         rte_timer_subsystem_init();
 765
 766         /* fetch default timer frequency. */
 767         hz = rte_get_timer_hz();
 768
 769         /* create the mbuf pool */
 770         l2fwd_pktmbuf_pool =
 771                 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 772                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 773         if (l2fwd_pktmbuf_pool == NULL)
 774                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 775
 776         nb_ports = rte_eth_dev_count_avail();
 777         if (nb_ports == 0)
 778                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 779
 780         /* reset l2fwd_dst_ports */
 781         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 782                 l2fwd_dst_ports[portid] = 0;
 783         last_port = 0;
 784
 785         /*
 786          * Each logical core is assigned a dedicated TX queue on each port.
 787          */
 788         RTE_ETH_FOREACH_DEV(portid) {
 789                 /* skip ports that are not enabled */
 790                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 791                         continue;
 792
 793                 if (nb_ports_in_mask % 2) {
 794                         l2fwd_dst_ports[portid] = last_port;
 795                         l2fwd_dst_ports[last_port] = portid;
 796                 } else
 797                         last_port = portid;
 798
 799                 nb_ports_in_mask++;
 800         }
 801         if (nb_ports_in_mask % 2) {
 802                 printf("Notice: odd number of ports in portmask.\n");
 803                 l2fwd_dst_ports[last_port] = last_port;
 804         }
 805
 806         rx_lcore_id = 0;
 807         qconf = NULL;
 808
 809         /* Initialize the port/queue configuration of each logical core */
 810         RTE_ETH_FOREACH_DEV(portid) {
 811                 /* skip ports that are not enabled */
 812                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 813                         continue;
 814
 815                 /* get the lcore_id for this port */
 816                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 817                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 818                        l2fwd_rx_queue_per_lcore) {
 819                         rx_lcore_id++;
 820                         if (rx_lcore_id >= RTE_MAX_LCORE)
 821                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 822                 }
 823
 824                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 825                         /* Assigned a new logical core in the loop above. */
 826                         qconf = &lcore_queue_conf[rx_lcore_id];
 827
 828                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 829                 qconf->n_rx_port++;
 830                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 831         }
 832
 833         /* Initialise each port */
 834         RTE_ETH_FOREACH_DEV(portid) {
 835                 struct rte_eth_dev_info dev_info;
 836                 struct rte_eth_rxconf rxq_conf;
 837                 struct rte_eth_txconf txq_conf;
 838                 struct rte_eth_conf local_port_conf = port_conf;
 839
 840                 /* skip ports that are not enabled */
 841                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 842                         printf("Skipping disabled port %u\n", portid);
 843                         continue;
 844                 }
 845                 nb_ports_available++;
 846
 847                 /* init port */
 848                 printf("Initializing port %u... ", portid);
 849                 fflush(stdout);
 850
 851                 ret = rte_eth_dev_info_get(portid, &dev_info);
 852                 if (ret != 0)
 853                         rte_exit(EXIT_FAILURE,
 854                                 "Error during getting device (port %u) info: %s\n",
 855                                 portid, strerror(-ret));
 856
 857                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 858                         local_port_conf.txmode.offloads |=
 859                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 860                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 861                 if (ret < 0)
 862                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 863                                   ret, portid);
 864
 865                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 866                                                        &nb_txd);
 867                 if (ret < 0)
 868                         rte_exit(EXIT_FAILURE,
 869                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 870                                  ret, portid);
 871
 872                 ret = rte_eth_macaddr_get(portid,
 873                                           &l2fwd_ports_eth_addr[portid]);
 874                 if (ret < 0)
 875                         rte_exit(EXIT_FAILURE,
 876                                  "Cannot get MAC address: err=%d, port=%u\n",
 877                                  ret, portid);
 878
 879                 /* init one RX queue */
 880                 fflush(stdout);
 881                 rxq_conf = dev_info.default_rxconf;
 882                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 883                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 884                                              rte_eth_dev_socket_id(portid),
 885                                              &rxq_conf,
 886                                              l2fwd_pktmbuf_pool);
 887                 if (ret < 0)
 888                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 889                                   ret, portid);
 890
 891                 /* init one TX queue on each port */
 892                 txq_conf = dev_info.default_txconf;
 893                 txq_conf.offloads = local_port_conf.txmode.offloads;
 894                 fflush(stdout);
 895                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 896                                 rte_eth_dev_socket_id(portid),
 897                                 &txq_conf);
 898                 if (ret < 0)
 899                         rte_exit(EXIT_FAILURE,
 900                         "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 901                                 ret, portid);
 902
 903                 /* Initialize TX buffers */
 904                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 905                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 906                                 rte_eth_dev_socket_id(portid));
 907                 if (tx_buffer[portid] == NULL)
 908                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 909                                         portid);
 910
 911                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 912
 913                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 914                                 rte_eth_tx_buffer_count_callback,
 915                                 &port_statistics[portid].dropped);
 916                 if (ret < 0)
 917                         rte_exit(EXIT_FAILURE,
 918                         "Cannot set error callback for tx buffer on port %u\n",
 919                                  portid);
 920
 921                 /* Start device */
 922                 ret = rte_eth_dev_start(portid);
 923                 if (ret < 0)
 924                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 925                                   ret, portid);
 926
 927                 printf("done:\n");
 928
 929                 ret = rte_eth_promiscuous_enable(portid);
 930                 if (ret != 0) {
 931                         rte_exit(EXIT_FAILURE,
 932                                  "rte_eth_promiscuous_enable:err=%s, port=%u\n",
 933                                  rte_strerror(-ret), portid);
 934                         return ret;
 935
 936                 }
 937
 938                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 939                                 portid,
 940                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 941                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 942                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 943                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 944                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 945                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 946
 947                 /* initialize port stats */
 948                 memset(&port_statistics, 0, sizeof(port_statistics));
 949         }
 950
 951         if (!nb_ports_available) {
 952                 rte_exit(EXIT_FAILURE,
 953                         "All available ports are disabled. Please set portmask.\n");
 954         }
 955
 956         check_all_ports_link_status(l2fwd_enabled_port_mask);
 957
 958         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 959
 960         RTE_LCORE_FOREACH(lcore_id) {
 961                 qconf = &lcore_queue_conf[lcore_id];
 962
 963                 rte_spinlock_init(&qconf->lock);
 964
 965                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 966                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 967
 968                 if (qconf->n_rx_port == 0) {
 969                         RTE_LOG(INFO, L2FWD,
 970                                 "lcore %u: no ports so no jobs stats context initialization\n",
 971                                 lcore_id);
 972                         continue;
 973                 }
 974                 /* Add flush job.
 975                  * Set fixed period by setting min = max = initial period. Set target to
 976                  * zero as it is irrelevant for this job. */
 977                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 978                                 drain_tsc, 0);
 979
 980                 rte_timer_init(&qconf->flush_timer);
 981                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
 982                                 lcore_id, &l2fwd_flush_job, NULL);
 983
 984                 if (ret < 0) {
 985                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
 986                                         lcore_id, rte_strerror(-ret));
 987                 }
 988
 989                 for (i = 0; i < qconf->n_rx_port; i++) {
 990                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
 991
 992                         portid = qconf->rx_port_list[i];
 993                         printf("Setting forward job for port %u\n", portid);
 994
 995                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
 996                         /* Setup forward job.
 997                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
 998                          * this is desired optimal RX/TX burst size. */
 999                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1000                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1001
1002                         rte_timer_init(&qconf->rx_timers[i]);
1003                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1004                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1005
1006                         if (ret < 0) {
1007                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1008                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1009                         }
1010                 }
1011         }
1012
1013         if (timer_period)
1014                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1015         else
1016                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1017
1018         /* launch per-lcore init on every lcore */
1019         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MAIN);
1020         RTE_LCORE_FOREACH_WORKER(lcore_id) {
1021                 if (rte_eal_wait_lcore(lcore_id) < 0)
1022                         return -1;
1023         }
1024
1025         return 0;
1026 }