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_common.h>
  42 #include <rte_log.h>
  43 #include <rte_malloc.h>
  44 #include <rte_memory.h>
  45 #include <rte_memcpy.h>
  46 #include <rte_eal.h>
  47 #include <rte_launch.h>
  48 #include <rte_atomic.h>
  49 #include <rte_cycles.h>
  50 #include <rte_prefetch.h>
  51 #include <rte_lcore.h>
  52 #include <rte_per_lcore.h>
  53 #include <rte_branch_prediction.h>
  54 #include <rte_interrupts.h>
  55 #include <rte_pci.h>
  56 #include <rte_debug.h>
  57 #include <rte_ether.h>
  58 #include <rte_ethdev.h>
  59 #include <rte_mempool.h>
  60 #include <rte_mbuf.h>
  61 #include <rte_spinlock.h>
  62
  63 #include <rte_errno.h>
  64 #include <rte_jobstats.h>
  65 #include <rte_timer.h>
  66 #include <rte_alarm.h>
  67 #include <rte_pause.h>
  68
  69 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  70
  71 #define NB_MBUF   8192
  72
  73 #define MAX_PKT_BURST 32
  74 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  75
  76 /*
  77  * Configurable number of RX/TX ring descriptors
  78  */
  79 #define RTE_TEST_RX_DESC_DEFAULT 128
  80 #define RTE_TEST_TX_DESC_DEFAULT 512
  81 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  82 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  83
  84 /* ethernet addresses of ports */
  85 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  86
  87 /* mask of enabled ports */
  88 static uint32_t l2fwd_enabled_port_mask;
  89
  90 /* list of enabled ports */
  91 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  92
  93 #define UPDATE_STEP_UP 1
  94 #define UPDATE_STEP_DOWN 32
  95
  96 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  97
  98 #define MAX_RX_QUEUE_PER_LCORE 16
  99 #define MAX_TX_QUEUE_PER_PORT 16
 100 struct lcore_queue_conf {
 101         unsigned n_rx_port;
 102         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 103         uint64_t next_flush_time[RTE_MAX_ETHPORTS];
 104
 105         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
 106         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
 107
 108         struct rte_timer flush_timer;
 109         struct rte_jobstats flush_job;
 110         struct rte_jobstats idle_job;
 111         struct rte_jobstats_context jobs_context;
 112
 113         rte_atomic16_t stats_read_pending;
 114         rte_spinlock_t lock;
 115 } __rte_cache_aligned;
 116 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 117
 118 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
 119
 120 static const struct rte_eth_conf port_conf = {
 121         .rxmode = {
 122                 .split_hdr_size = 0,
 123                 .header_split   = 0, /**< Header Split disabled */
 124                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 125                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 126                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 127                 .hw_strip_crc   = 1, /**< CRC stripped by hardware */
 128         },
 129         .txmode = {
 130                 .mq_mode = ETH_MQ_TX_NONE,
 131         },
 132 };
 133
 134 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 135
 136 /* Per-port statistics struct */
 137 struct l2fwd_port_statistics {
 138         uint64_t tx;
 139         uint64_t rx;
 140         uint64_t dropped;
 141 } __rte_cache_aligned;
 142 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 143
 144 /* 1 day max */
 145 #define MAX_TIMER_PERIOD 86400
 146 /* default period is 10 seconds */
 147 static int64_t timer_period = 10;
 148 /* default timer frequency */
 149 static double hz;
 150 /* BURST_TX_DRAIN_US converted to cycles */
 151 uint64_t drain_tsc;
 152 /* Convert cycles to ns */
 153 static inline double
 154 cycles_to_ns(uint64_t cycles)
 155 {
 156         double t = cycles;
 157
 158         t *= (double)NS_PER_S;
 159         t /= hz;
 160         return t;
 161 }
 162
 163 static void
 164 show_lcore_stats(unsigned lcore_id)
 165 {
 166         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 167         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 168         struct rte_jobstats *job;
 169         uint8_t i;
 170
 171         /* LCore statistics. */
 172         uint64_t stats_period, loop_count;
 173         uint64_t exec, exec_min, exec_max;
 174         uint64_t management, management_min, management_max;
 175         uint64_t busy, busy_min, busy_max;
 176
 177         /* Jobs statistics. */
 178         const uint16_t port_cnt = qconf->n_rx_port;
 179         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 180         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 181                                 jobs_exec_max[port_cnt];
 182
 183         uint64_t flush_exec_cnt, flush_period;
 184         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 185
 186         uint64_t idle_exec_cnt;
 187         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 188         uint64_t collection_time = rte_get_timer_cycles();
 189
 190         /* Ask forwarding thread to give us stats. */
 191         rte_atomic16_set(&qconf->stats_read_pending, 1);
 192         rte_spinlock_lock(&qconf->lock);
 193         rte_atomic16_set(&qconf->stats_read_pending, 0);
 194
 195         /* Collect context statistics. */
 196         stats_period = ctx->state_time - ctx->start_time;
 197         loop_count = ctx->loop_cnt;
 198
 199         exec = ctx->exec_time;
 200         exec_min = ctx->min_exec_time;
 201         exec_max = ctx->max_exec_time;
 202
 203         management = ctx->management_time;
 204         management_min = ctx->min_management_time;
 205         management_max = ctx->max_management_time;
 206
 207         rte_jobstats_context_reset(ctx);
 208
 209         for (i = 0; i < port_cnt; i++) {
 210                 job = &qconf->port_fwd_jobs[i];
 211
 212                 jobs_exec_cnt[i] = job->exec_cnt;
 213                 jobs_period[i] = job->period;
 214
 215                 jobs_exec[i] = job->exec_time;
 216                 jobs_exec_min[i] = job->min_exec_time;
 217                 jobs_exec_max[i] = job->max_exec_time;
 218
 219                 rte_jobstats_reset(job);
 220         }
 221
 222         flush_exec_cnt = qconf->flush_job.exec_cnt;
 223         flush_period = qconf->flush_job.period;
 224         flush_exec = qconf->flush_job.exec_time;
 225         flush_exec_min = qconf->flush_job.min_exec_time;
 226         flush_exec_max = qconf->flush_job.max_exec_time;
 227         rte_jobstats_reset(&qconf->flush_job);
 228
 229         idle_exec_cnt = qconf->idle_job.exec_cnt;
 230         idle_exec = qconf->idle_job.exec_time;
 231         idle_exec_min = qconf->idle_job.min_exec_time;
 232         idle_exec_max = qconf->idle_job.max_exec_time;
 233         rte_jobstats_reset(&qconf->idle_job);
 234
 235         rte_spinlock_unlock(&qconf->lock);
 236
 237         exec -= idle_exec;
 238         busy = exec + management;
 239         busy_min = exec_min + management_min;
 240         busy_max = exec_max + management_max;
 241
 242
 243         collection_time = rte_get_timer_cycles() - collection_time;
 244
 245 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 246
 247         printf("\n----------------"
 248                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 249                         "\n%-18s %14s %7s %10s %10s %10s "
 250                         "\n%-18s %'14.0f"
 251                         "\n%-18s %'14" PRIu64
 252                         STAT_FMT /* Exec */
 253                         STAT_FMT /* Management */
 254                         STAT_FMT /* Busy */
 255                         STAT_FMT, /* Idle  */
 256                         lcore_id, cycles_to_ns(collection_time),
 257                         "Stat type", "total", "%total", "avg", "min", "max",
 258                         "Stats duration:", cycles_to_ns(stats_period),
 259                         "Loop count:", loop_count,
 260                         "Exec time",
 261                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 262                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 263                         cycles_to_ns(exec_min),
 264                         cycles_to_ns(exec_max),
 265                         "Management time",
 266                         cycles_to_ns(management), management * 100.0 / stats_period,
 267                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 268                         cycles_to_ns(management_min),
 269                         cycles_to_ns(management_max),
 270                         "Exec + management",
 271                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 272                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 273                         cycles_to_ns(busy_min),
 274                         cycles_to_ns(busy_max),
 275                         "Idle (job)",
 276                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 277                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 278                         cycles_to_ns(idle_exec_min),
 279                         cycles_to_ns(idle_exec_max));
 280
 281         for (i = 0; i < qconf->n_rx_port; i++) {
 282                 job = &qconf->port_fwd_jobs[i];
 283                 printf("\n\nJob %" PRIu32 ": %-20s "
 284                                 "\n%-18s %'14" PRIu64
 285                                 "\n%-18s %'14.0f"
 286                                 STAT_FMT,
 287                                 i, job->name,
 288                                 "Exec count:", jobs_exec_cnt[i],
 289                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 290                                 "Exec time",
 291                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 292                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 293                                                 : 0),
 294                                 cycles_to_ns(jobs_exec_min[i]),
 295                                 cycles_to_ns(jobs_exec_max[i]));
 296         }
 297
 298         if (qconf->n_rx_port > 0) {
 299                 job = &qconf->flush_job;
 300                 printf("\n\nJob %" PRIu32 ": %-20s "
 301                                 "\n%-18s %'14" PRIu64
 302                                 "\n%-18s %'14.0f"
 303                                 STAT_FMT,
 304                                 i, job->name,
 305                                 "Exec count:", flush_exec_cnt,
 306                                 "Exec period: ", cycles_to_ns(flush_period),
 307                                 "Exec time",
 308                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 309                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 310                                 cycles_to_ns(flush_exec_min),
 311                                 cycles_to_ns(flush_exec_max));
 312         }
 313 }
 314
 315 /* Print out statistics on packets dropped */
 316 static void
 317 show_stats_cb(__rte_unused void *param)
 318 {
 319         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 320         unsigned portid, lcore_id;
 321
 322         total_packets_dropped = 0;
 323         total_packets_tx = 0;
 324         total_packets_rx = 0;
 325
 326         const char clr[] = { 27, '[', '2', 'J', '\0' };
 327         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 328
 329         /* Clear screen and move to top left */
 330         printf("%s%s"
 331                         "\nPort statistics ===================================",
 332                         clr, topLeft);
 333
 334         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 335                 /* skip disabled ports */
 336                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 337                         continue;
 338                 printf("\nStatistics for port %u ------------------------------"
 339                                 "\nPackets sent: %24"PRIu64
 340                                 "\nPackets received: %20"PRIu64
 341                                 "\nPackets dropped: %21"PRIu64,
 342                                 portid,
 343                                 port_statistics[portid].tx,
 344                                 port_statistics[portid].rx,
 345                                 port_statistics[portid].dropped);
 346
 347                 total_packets_dropped += port_statistics[portid].dropped;
 348                 total_packets_tx += port_statistics[portid].tx;
 349                 total_packets_rx += port_statistics[portid].rx;
 350         }
 351
 352         printf("\nAggregate statistics ==============================="
 353                         "\nTotal packets sent: %18"PRIu64
 354                         "\nTotal packets received: %14"PRIu64
 355                         "\nTotal packets dropped: %15"PRIu64
 356                         "\n====================================================",
 357                         total_packets_tx,
 358                         total_packets_rx,
 359                         total_packets_dropped);
 360
 361         RTE_LCORE_FOREACH(lcore_id) {
 362                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 363                         show_lcore_stats(lcore_id);
 364         }
 365
 366         printf("\n====================================================\n");
 367         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 368 }
 369
 370 static void
 371 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 372 {
 373         struct ether_hdr *eth;
 374         void *tmp;
 375         int sent;
 376         unsigned dst_port;
 377         struct rte_eth_dev_tx_buffer *buffer;
 378
 379         dst_port = l2fwd_dst_ports[portid];
 380         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 381
 382         /* 02:00:00:00:00:xx */
 383         tmp = &eth->d_addr.addr_bytes[0];
 384         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 385
 386         /* src addr */
 387         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 388
 389         buffer = tx_buffer[dst_port];
 390         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 391         if (sent)
 392                 port_statistics[dst_port].tx += sent;
 393 }
 394
 395 static void
 396 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 397 {
 398         int64_t err = job->target - result;
 399         int64_t histeresis = job->target / 8;
 400
 401         if (err < -histeresis) {
 402                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 403                         job->period -= UPDATE_STEP_DOWN;
 404         } else if (err > histeresis) {
 405                 if (job->period + UPDATE_STEP_UP < job->max_period)
 406                         job->period += UPDATE_STEP_UP;
 407         }
 408 }
 409
 410 static void
 411 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 412 {
 413         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 414         struct rte_mbuf *m;
 415
 416         const uint16_t port_idx = (uintptr_t) arg;
 417         const unsigned lcore_id = rte_lcore_id();
 418         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 419         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 420         const uint16_t portid = qconf->rx_port_list[port_idx];
 421
 422         uint8_t j;
 423         uint16_t total_nb_rx;
 424
 425         rte_jobstats_start(&qconf->jobs_context, job);
 426
 427         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 428          * function must be called more frequently. */
 429
 430         total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 431                         MAX_PKT_BURST);
 432
 433         for (j = 0; j < total_nb_rx; j++) {
 434                 m = pkts_burst[j];
 435                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 436                 l2fwd_simple_forward(m, portid);
 437         }
 438
 439         if (total_nb_rx == MAX_PKT_BURST) {
 440                 const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 441                                 MAX_PKT_BURST);
 442
 443                 total_nb_rx += nb_rx;
 444                 for (j = 0; j < nb_rx; j++) {
 445                         m = pkts_burst[j];
 446                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 447                         l2fwd_simple_forward(m, portid);
 448                 }
 449         }
 450
 451         port_statistics[portid].rx += total_nb_rx;
 452
 453         /* Adjust period time in which we are running here. */
 454         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 455                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 456                                 lcore_id, l2fwd_fwd_job, arg);
 457         }
 458 }
 459
 460 static void
 461 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 462 {
 463         uint64_t now;
 464         unsigned lcore_id;
 465         struct lcore_queue_conf *qconf;
 466         uint16_t portid;
 467         unsigned i;
 468         uint32_t sent;
 469         struct rte_eth_dev_tx_buffer *buffer;
 470
 471         lcore_id = rte_lcore_id();
 472         qconf = &lcore_queue_conf[lcore_id];
 473
 474         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 475
 476         now = rte_get_timer_cycles();
 477         lcore_id = rte_lcore_id();
 478         qconf = &lcore_queue_conf[lcore_id];
 479
 480         for (i = 0; i < qconf->n_rx_port; i++) {
 481                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 482
 483                 if (qconf->next_flush_time[portid] <= now)
 484                         continue;
 485
 486                 buffer = tx_buffer[portid];
 487                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 488                 if (sent)
 489                         port_statistics[portid].tx += sent;
 490
 491                 qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
 492         }
 493
 494         /* Pass target to indicate that this job is happy of time interwal
 495          * in which it was called. */
 496         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 497 }
 498
 499 /* main processing loop */
 500 static void
 501 l2fwd_main_loop(void)
 502 {
 503         unsigned lcore_id;
 504         unsigned i, portid;
 505         struct lcore_queue_conf *qconf;
 506         uint8_t stats_read_pending = 0;
 507         uint8_t need_manage;
 508
 509         lcore_id = rte_lcore_id();
 510         qconf = &lcore_queue_conf[lcore_id];
 511
 512         if (qconf->n_rx_port == 0) {
 513                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 514                 return;
 515         }
 516
 517         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 518
 519         for (i = 0; i < qconf->n_rx_port; i++) {
 520
 521                 portid = qconf->rx_port_list[i];
 522                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 523                         portid);
 524         }
 525
 526         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 527
 528         for (;;) {
 529                 rte_spinlock_lock(&qconf->lock);
 530
 531                 do {
 532                         rte_jobstats_context_start(&qconf->jobs_context);
 533
 534                         /* Do the Idle job:
 535                          * - Read stats_read_pending flag
 536                          * - check if some real job need to be executed
 537                          */
 538                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 539
 540                         uint64_t repeats = 0;
 541
 542                         do {
 543                                 uint8_t i;
 544                                 uint64_t now = rte_get_timer_cycles();
 545
 546                                 repeats++;
 547                                 need_manage = qconf->flush_timer.expire < now;
 548                                 /* Check if we was esked to give a stats. */
 549                                 stats_read_pending =
 550                                                 rte_atomic16_read(&qconf->stats_read_pending);
 551                                 need_manage |= stats_read_pending;
 552
 553                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 554                                         need_manage = qconf->rx_timers[i].expire < now;
 555
 556                         } while (!need_manage);
 557
 558                         if (likely(repeats != 1))
 559                                 rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 560                         else
 561                                 rte_jobstats_abort(&qconf->idle_job);
 562
 563                         rte_timer_manage();
 564                         rte_jobstats_context_finish(&qconf->jobs_context);
 565                 } while (likely(stats_read_pending == 0));
 566
 567                 rte_spinlock_unlock(&qconf->lock);
 568                 rte_pause();
 569         }
 570 }
 571
 572 static int
 573 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 574 {
 575         l2fwd_main_loop();
 576         return 0;
 577 }
 578
 579 /* display usage */
 580 static void
 581 l2fwd_usage(const char *prgname)
 582 {
 583         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 584                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 585                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 586                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 587                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 588                prgname);
 589 }
 590
 591 static int
 592 l2fwd_parse_portmask(const char *portmask)
 593 {
 594         char *end = NULL;
 595         unsigned long pm;
 596
 597         /* parse hexadecimal string */
 598         pm = strtoul(portmask, &end, 16);
 599         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 600                 return -1;
 601
 602         if (pm == 0)
 603                 return -1;
 604
 605         return pm;
 606 }
 607
 608 static unsigned int
 609 l2fwd_parse_nqueue(const char *q_arg)
 610 {
 611         char *end = NULL;
 612         unsigned long n;
 613
 614         /* parse hexadecimal string */
 615         n = strtoul(q_arg, &end, 10);
 616         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 617                 return 0;
 618         if (n == 0)
 619                 return 0;
 620         if (n >= MAX_RX_QUEUE_PER_LCORE)
 621                 return 0;
 622
 623         return n;
 624 }
 625
 626 static int
 627 l2fwd_parse_timer_period(const char *q_arg)
 628 {
 629         char *end = NULL;
 630         int n;
 631
 632         /* parse number string */
 633         n = strtol(q_arg, &end, 10);
 634         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 635                 return -1;
 636         if (n >= MAX_TIMER_PERIOD)
 637                 return -1;
 638
 639         return n;
 640 }
 641
 642 /* Parse the argument given in the command line of the application */
 643 static int
 644 l2fwd_parse_args(int argc, char **argv)
 645 {
 646         int opt, ret;
 647         char **argvopt;
 648         int option_index;
 649         char *prgname = argv[0];
 650         static struct option lgopts[] = {
 651                 {NULL, 0, 0, 0}
 652         };
 653
 654         argvopt = argv;
 655
 656         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 657                                   lgopts, &option_index)) != EOF) {
 658
 659                 switch (opt) {
 660                 /* portmask */
 661                 case 'p':
 662                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 663                         if (l2fwd_enabled_port_mask == 0) {
 664                                 printf("invalid portmask\n");
 665                                 l2fwd_usage(prgname);
 666                                 return -1;
 667                         }
 668                         break;
 669
 670                 /* nqueue */
 671                 case 'q':
 672                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 673                         if (l2fwd_rx_queue_per_lcore == 0) {
 674                                 printf("invalid queue number\n");
 675                                 l2fwd_usage(prgname);
 676                                 return -1;
 677                         }
 678                         break;
 679
 680                 /* timer period */
 681                 case 'T':
 682                         timer_period = l2fwd_parse_timer_period(optarg);
 683                         if (timer_period < 0) {
 684                                 printf("invalid timer period\n");
 685                                 l2fwd_usage(prgname);
 686                                 return -1;
 687                         }
 688                         break;
 689
 690                 /* For thousands separator in printf. */
 691                 case 'l':
 692                         setlocale(LC_ALL, "");
 693                         break;
 694
 695                 /* long options */
 696                 case 0:
 697                         l2fwd_usage(prgname);
 698                         return -1;
 699
 700                 default:
 701                         l2fwd_usage(prgname);
 702                         return -1;
 703                 }
 704         }
 705
 706         if (optind >= 0)
 707                 argv[optind-1] = prgname;
 708
 709         ret = optind-1;
 710         optind = 1; /* reset getopt lib */
 711         return ret;
 712 }
 713
 714 /* Check the link status of all ports in up to 9s, and print them finally */
 715 static void
 716 check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
 717 {
 718 #define CHECK_INTERVAL 100 /* 100ms */
 719 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 720         uint16_t portid;
 721         uint8_t count, all_ports_up, print_flag = 0;
 722         struct rte_eth_link link;
 723
 724         printf("\nChecking link status");
 725         fflush(stdout);
 726         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 727                 all_ports_up = 1;
 728                 for (portid = 0; portid < port_num; portid++) {
 729                         if ((port_mask & (1 << portid)) == 0)
 730                                 continue;
 731                         memset(&link, 0, sizeof(link));
 732                         rte_eth_link_get_nowait(portid, &link);
 733                         /* print link status if flag set */
 734                         if (print_flag == 1) {
 735                                 if (link.link_status)
 736                                         printf(
 737                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 738                                                 portid, link.link_speed,
 739                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 740                                         ("full-duplex") : ("half-duplex\n"));
 741                                 else
 742                                         printf("Port %d Link Down\n", portid);
 743                                 continue;
 744                         }
 745                         /* clear all_ports_up flag if any link down */
 746                         if (link.link_status == ETH_LINK_DOWN) {
 747                                 all_ports_up = 0;
 748                                 break;
 749                         }
 750                 }
 751                 /* after finally printing all link status, get out */
 752                 if (print_flag == 1)
 753                         break;
 754
 755                 if (all_ports_up == 0) {
 756                         printf(".");
 757                         fflush(stdout);
 758                         rte_delay_ms(CHECK_INTERVAL);
 759                 }
 760
 761                 /* set the print_flag if all ports up or timeout */
 762                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 763                         print_flag = 1;
 764                         printf("done\n");
 765                 }
 766         }
 767 }
 768
 769 int
 770 main(int argc, char **argv)
 771 {
 772         struct lcore_queue_conf *qconf;
 773         struct rte_eth_dev_info dev_info;
 774         unsigned lcore_id, rx_lcore_id;
 775         unsigned nb_ports_in_mask = 0;
 776         int ret;
 777         char name[RTE_JOBSTATS_NAMESIZE];
 778         uint16_t nb_ports;
 779         uint16_t nb_ports_available;
 780         uint16_t portid, last_port;
 781         uint8_t i;
 782
 783         /* init EAL */
 784         ret = rte_eal_init(argc, argv);
 785         if (ret < 0)
 786                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 787         argc -= ret;
 788         argv += ret;
 789
 790         /* parse application arguments (after the EAL ones) */
 791         ret = l2fwd_parse_args(argc, argv);
 792         if (ret < 0)
 793                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 794
 795         rte_timer_subsystem_init();
 796
 797         /* fetch default timer frequency. */
 798         hz = rte_get_timer_hz();
 799
 800         /* create the mbuf pool */
 801         l2fwd_pktmbuf_pool =
 802                 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 803                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 804         if (l2fwd_pktmbuf_pool == NULL)
 805                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 806
 807         nb_ports = rte_eth_dev_count();
 808         if (nb_ports == 0)
 809                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 810
 811         /* reset l2fwd_dst_ports */
 812         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 813                 l2fwd_dst_ports[portid] = 0;
 814         last_port = 0;
 815
 816         /*
 817          * Each logical core is assigned a dedicated TX queue on each port.
 818          */
 819         for (portid = 0; portid < nb_ports; portid++) {
 820                 /* skip ports that are not enabled */
 821                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 822                         continue;
 823
 824                 if (nb_ports_in_mask % 2) {
 825                         l2fwd_dst_ports[portid] = last_port;
 826                         l2fwd_dst_ports[last_port] = portid;
 827                 } else
 828                         last_port = portid;
 829
 830                 nb_ports_in_mask++;
 831
 832                 rte_eth_dev_info_get(portid, &dev_info);
 833         }
 834         if (nb_ports_in_mask % 2) {
 835                 printf("Notice: odd number of ports in portmask.\n");
 836                 l2fwd_dst_ports[last_port] = last_port;
 837         }
 838
 839         rx_lcore_id = 0;
 840         qconf = NULL;
 841
 842         /* Initialize the port/queue configuration of each logical core */
 843         for (portid = 0; portid < nb_ports; portid++) {
 844                 /* skip ports that are not enabled */
 845                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 846                         continue;
 847
 848                 /* get the lcore_id for this port */
 849                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 850                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 851                        l2fwd_rx_queue_per_lcore) {
 852                         rx_lcore_id++;
 853                         if (rx_lcore_id >= RTE_MAX_LCORE)
 854                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 855                 }
 856
 857                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 858                         /* Assigned a new logical core in the loop above. */
 859                         qconf = &lcore_queue_conf[rx_lcore_id];
 860
 861                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 862                 qconf->n_rx_port++;
 863                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 864         }
 865
 866         nb_ports_available = nb_ports;
 867
 868         /* Initialise each port */
 869         for (portid = 0; portid < nb_ports; portid++) {
 870                 /* skip ports that are not enabled */
 871                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 872                         printf("Skipping disabled port %u\n", portid);
 873                         nb_ports_available--;
 874                         continue;
 875                 }
 876                 /* init port */
 877                 printf("Initializing port %u... ", portid);
 878                 fflush(stdout);
 879                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 880                 if (ret < 0)
 881                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 882                                   ret, portid);
 883
 884                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 885                                                        &nb_txd);
 886                 if (ret < 0)
 887                         rte_exit(EXIT_FAILURE,
 888                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 889                                  ret, portid);
 890
 891                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 892
 893                 /* init one RX queue */
 894                 fflush(stdout);
 895                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 896                                              rte_eth_dev_socket_id(portid),
 897                                              NULL,
 898                                              l2fwd_pktmbuf_pool);
 899                 if (ret < 0)
 900                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 901                                   ret, portid);
 902
 903                 /* init one TX queue on each port */
 904                 fflush(stdout);
 905                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 906                                 rte_eth_dev_socket_id(portid),
 907                                 NULL);
 908                 if (ret < 0)
 909                         rte_exit(EXIT_FAILURE,
 910                         "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 911                                 ret, portid);
 912
 913                 /* Initialize TX buffers */
 914                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 915                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 916                                 rte_eth_dev_socket_id(portid));
 917                 if (tx_buffer[portid] == NULL)
 918                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 919                                         portid);
 920
 921                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 922
 923                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 924                                 rte_eth_tx_buffer_count_callback,
 925                                 &port_statistics[portid].dropped);
 926                 if (ret < 0)
 927                         rte_exit(EXIT_FAILURE,
 928                         "Cannot set error callback for tx buffer on port %u\n",
 929                                  portid);
 930
 931                 /* Start device */
 932                 ret = rte_eth_dev_start(portid);
 933                 if (ret < 0)
 934                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 935                                   ret, portid);
 936
 937                 printf("done:\n");
 938
 939                 rte_eth_promiscuous_enable(portid);
 940
 941                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 942                                 portid,
 943                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 944                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 945                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 946                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 947                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 948                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 949
 950                 /* initialize port stats */
 951                 memset(&port_statistics, 0, sizeof(port_statistics));
 952         }
 953
 954         if (!nb_ports_available) {
 955                 rte_exit(EXIT_FAILURE,
 956                         "All available ports are disabled. Please set portmask.\n");
 957         }
 958
 959         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 960
 961         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 962
 963         RTE_LCORE_FOREACH(lcore_id) {
 964                 qconf = &lcore_queue_conf[lcore_id];
 965
 966                 rte_spinlock_init(&qconf->lock);
 967
 968                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 969                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 970
 971                 if (qconf->n_rx_port == 0) {
 972                         RTE_LOG(INFO, L2FWD,
 973                                 "lcore %u: no ports so no jobs stats context initialization\n",
 974                                 lcore_id);
 975                         continue;
 976                 }
 977                 /* Add flush job.
 978                  * Set fixed period by setting min = max = initial period. Set target to
 979                  * zero as it is irrelevant for this job. */
 980                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 981                                 drain_tsc, 0);
 982
 983                 rte_timer_init(&qconf->flush_timer);
 984                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
 985                                 lcore_id, &l2fwd_flush_job, NULL);
 986
 987                 if (ret < 0) {
 988                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
 989                                         lcore_id, rte_strerror(-ret));
 990                 }
 991
 992                 for (i = 0; i < qconf->n_rx_port; i++) {
 993                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
 994
 995                         portid = qconf->rx_port_list[i];
 996                         printf("Setting forward job for port %u\n", portid);
 997
 998                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
 999                         /* Setup forward job.
1000                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
1001                          * this is desired optimal RX/TX burst size. */
1002                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1003                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1004
1005                         rte_timer_init(&qconf->rx_timers[i]);
1006                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1007                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1008
1009                         if (ret < 0) {
1010                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1011                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1012                         }
1013                 }
1014         }
1015
1016         if (timer_period)
1017                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1018         else
1019                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1020
1021         /* launch per-lcore init on every lcore */
1022         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
1023         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1024                 if (rte_eal_wait_lcore(lcore_id) < 0)
1025                         return -1;
1026         }
1027
1028         return 0;
1029 }