examples/l2fwd-jobstats/main.c

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