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