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