examples/l2fwd-jobstats/main.c

   1 /*-
   2  *   BSD LICENSE
   3  *
   4  *   Copyright(c) 2010-2015 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_memory.h>
  45 #include <rte_memcpy.h>
  46 #include <rte_memzone.h>
  47 #include <rte_eal.h>
  48 #include <rte_per_lcore.h>
  49 #include <rte_launch.h>
  50 #include <rte_atomic.h>
  51 #include <rte_cycles.h>
  52 #include <rte_prefetch.h>
  53 #include <rte_lcore.h>
  54 #include <rte_per_lcore.h>
  55 #include <rte_branch_prediction.h>
  56 #include <rte_interrupts.h>
  57 #include <rte_pci.h>
  58 #include <rte_debug.h>
  59 #include <rte_ether.h>
  60 #include <rte_ethdev.h>
  61 #include <rte_ring.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 struct mbuf_table {
 101         uint64_t next_flush_time;
 102         unsigned len;
 103         struct rte_mbuf *mbufs[MAX_PKT_BURST];
 104 };
 105
 106 #define MAX_RX_QUEUE_PER_LCORE 16
 107 #define MAX_TX_QUEUE_PER_PORT 16
 108 struct lcore_queue_conf {
 109         unsigned n_rx_port;
 110         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 111         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 112
 113         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
 114         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
 115
 116         struct rte_timer flush_timer;
 117         struct rte_jobstats flush_job;
 118         struct rte_jobstats idle_job;
 119         struct rte_jobstats_context jobs_context;
 120
 121         rte_atomic16_t stats_read_pending;
 122         rte_spinlock_t lock;
 123 } __rte_cache_aligned;
 124 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 125
 126 static const struct rte_eth_conf port_conf = {
 127         .rxmode = {
 128                 .split_hdr_size = 0,
 129                 .header_split   = 0, /**< Header Split disabled */
 130                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 131                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 132                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 133                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 134         },
 135         .txmode = {
 136                 .mq_mode = ETH_MQ_TX_NONE,
 137         },
 138 };
 139
 140 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 141
 142 /* Per-port statistics struct */
 143 struct l2fwd_port_statistics {
 144         uint64_t tx;
 145         uint64_t rx;
 146         uint64_t dropped;
 147 } __rte_cache_aligned;
 148 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 149
 150 /* 1 day max */
 151 #define MAX_TIMER_PERIOD 86400
 152 /* default period is 10 seconds */
 153 static int64_t timer_period = 10;
 154 /* default timer frequency */
 155 static double hz;
 156 /* BURST_TX_DRAIN_US converted to cycles */
 157 uint64_t drain_tsc;
 158 /* Convert cycles to ns */
 159 static inline double
 160 cycles_to_ns(uint64_t cycles)
 161 {
 162         double t = cycles;
 163
 164         t *= (double)NS_PER_S;
 165         t /= hz;
 166         return t;
 167 }
 168
 169 static void
 170 show_lcore_stats(unsigned lcore_id)
 171 {
 172         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 173         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 174         struct rte_jobstats *job;
 175         uint8_t i;
 176
 177         /* LCore statistics. */
 178         uint64_t stats_period, loop_count;
 179         uint64_t exec, exec_min, exec_max;
 180         uint64_t management, management_min, management_max;
 181         uint64_t busy, busy_min, busy_max;
 182
 183         /* Jobs statistics. */
 184         const uint8_t port_cnt = qconf->n_rx_port;
 185         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 186         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 187                                 jobs_exec_max[port_cnt];
 188
 189         uint64_t flush_exec_cnt, flush_period;
 190         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 191
 192         uint64_t idle_exec_cnt;
 193         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 194         uint64_t collection_time = rte_get_timer_cycles();
 195
 196         /* Ask forwarding thread to give us stats. */
 197         rte_atomic16_set(&qconf->stats_read_pending, 1);
 198         rte_spinlock_lock(&qconf->lock);
 199         rte_atomic16_set(&qconf->stats_read_pending, 0);
 200
 201         /* Collect context statistics. */
 202         stats_period = ctx->state_time - ctx->start_time;
 203         loop_count = ctx->loop_cnt;
 204
 205         exec = ctx->exec_time;
 206         exec_min = ctx->min_exec_time;
 207         exec_max = ctx->max_exec_time;
 208
 209         management = ctx->management_time;
 210         management_min = ctx->min_management_time;
 211         management_max = ctx->max_management_time;
 212
 213         rte_jobstats_context_reset(ctx);
 214
 215         for (i = 0; i < port_cnt; i++) {
 216                 job = &qconf->port_fwd_jobs[i];
 217
 218                 jobs_exec_cnt[i] = job->exec_cnt;
 219                 jobs_period[i] = job->period;
 220
 221                 jobs_exec[i] = job->exec_time;
 222                 jobs_exec_min[i] = job->min_exec_time;
 223                 jobs_exec_max[i] = job->max_exec_time;
 224
 225                 rte_jobstats_reset(job);
 226         }
 227
 228         flush_exec_cnt = qconf->flush_job.exec_cnt;
 229         flush_period = qconf->flush_job.period;
 230         flush_exec = qconf->flush_job.exec_time;
 231         flush_exec_min = qconf->flush_job.min_exec_time;
 232         flush_exec_max = qconf->flush_job.max_exec_time;
 233         rte_jobstats_reset(&qconf->flush_job);
 234
 235         idle_exec_cnt = qconf->idle_job.exec_cnt;
 236         idle_exec = qconf->idle_job.exec_time;
 237         idle_exec_min = qconf->idle_job.min_exec_time;
 238         idle_exec_max = qconf->idle_job.max_exec_time;
 239         rte_jobstats_reset(&qconf->idle_job);
 240
 241         rte_spinlock_unlock(&qconf->lock);
 242
 243         exec -= idle_exec;
 244         busy = exec + management;
 245         busy_min = exec_min + management_min;
 246         busy_max = exec_max + management_max;
 247
 248
 249         collection_time = rte_get_timer_cycles() - collection_time;
 250
 251 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 252
 253         printf("\n----------------"
 254                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 255                         "\n%-18s %14s %7s %10s %10s %10s "
 256                         "\n%-18s %'14.0f"
 257                         "\n%-18s %'14" PRIu64
 258                         STAT_FMT /* Exec */
 259                         STAT_FMT /* Management */
 260                         STAT_FMT /* Busy */
 261                         STAT_FMT, /* Idle  */
 262                         lcore_id, cycles_to_ns(collection_time),
 263                         "Stat type", "total", "%total", "avg", "min", "max",
 264                         "Stats duration:", cycles_to_ns(stats_period),
 265                         "Loop count:", loop_count,
 266                         "Exec time",
 267                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 268                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 269                         cycles_to_ns(exec_min),
 270                         cycles_to_ns(exec_max),
 271                         "Management time",
 272                         cycles_to_ns(management), management * 100.0 / stats_period,
 273                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 274                         cycles_to_ns(management_min),
 275                         cycles_to_ns(management_max),
 276                         "Exec + management",
 277                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 278                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 279                         cycles_to_ns(busy_min),
 280                         cycles_to_ns(busy_max),
 281                         "Idle (job)",
 282                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 283                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 284                         cycles_to_ns(idle_exec_min),
 285                         cycles_to_ns(idle_exec_max));
 286
 287         for (i = 0; i < qconf->n_rx_port; i++) {
 288                 job = &qconf->port_fwd_jobs[i];
 289                 printf("\n\nJob %" PRIu32 ": %-20s "
 290                                 "\n%-18s %'14" PRIu64
 291                                 "\n%-18s %'14.0f"
 292                                 STAT_FMT,
 293                                 i, job->name,
 294                                 "Exec count:", jobs_exec_cnt[i],
 295                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 296                                 "Exec time",
 297                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 298                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 299                                                 : 0),
 300                                 cycles_to_ns(jobs_exec_min[i]),
 301                                 cycles_to_ns(jobs_exec_max[i]));
 302         }
 303
 304         if (qconf->n_rx_port > 0) {
 305                 job = &qconf->flush_job;
 306                 printf("\n\nJob %" PRIu32 ": %-20s "
 307                                 "\n%-18s %'14" PRIu64
 308                                 "\n%-18s %'14.0f"
 309                                 STAT_FMT,
 310                                 i, job->name,
 311                                 "Exec count:", flush_exec_cnt,
 312                                 "Exec period: ", cycles_to_ns(flush_period),
 313                                 "Exec time",
 314                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 315                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 316                                 cycles_to_ns(flush_exec_min),
 317                                 cycles_to_ns(flush_exec_max));
 318         }
 319 }
 320
 321 /* Print out statistics on packets dropped */
 322 static void
 323 show_stats_cb(__rte_unused void *param)
 324 {
 325         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 326         unsigned portid, lcore_id;
 327
 328         total_packets_dropped = 0;
 329         total_packets_tx = 0;
 330         total_packets_rx = 0;
 331
 332         const char clr[] = { 27, '[', '2', 'J', '\0' };
 333         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 334
 335         /* Clear screen and move to top left */
 336         printf("%s%s"
 337                         "\nPort statistics ===================================",
 338                         clr, topLeft);
 339
 340         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 341                 /* skip disabled ports */
 342                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 343                         continue;
 344                 printf("\nStatistics for port %u ------------------------------"
 345                                 "\nPackets sent: %24"PRIu64
 346                                 "\nPackets received: %20"PRIu64
 347                                 "\nPackets dropped: %21"PRIu64,
 348                                 portid,
 349                                 port_statistics[portid].tx,
 350                                 port_statistics[portid].rx,
 351                                 port_statistics[portid].dropped);
 352
 353                 total_packets_dropped += port_statistics[portid].dropped;
 354                 total_packets_tx += port_statistics[portid].tx;
 355                 total_packets_rx += port_statistics[portid].rx;
 356         }
 357
 358         printf("\nAggregate statistics ==============================="
 359                         "\nTotal packets sent: %18"PRIu64
 360                         "\nTotal packets received: %14"PRIu64
 361                         "\nTotal packets dropped: %15"PRIu64
 362                         "\n====================================================",
 363                         total_packets_tx,
 364                         total_packets_rx,
 365                         total_packets_dropped);
 366
 367         RTE_LCORE_FOREACH(lcore_id) {
 368                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 369                         show_lcore_stats(lcore_id);
 370         }
 371
 372         printf("\n====================================================\n");
 373         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 374 }
 375
 376 /* Send the burst of packets on an output interface */
 377 static void
 378 l2fwd_send_burst(struct lcore_queue_conf *qconf, uint8_t port)
 379 {
 380         struct mbuf_table *m_table;
 381         uint16_t ret;
 382         uint16_t queueid = 0;
 383         uint16_t n;
 384
 385         m_table = &qconf->tx_mbufs[port];
 386         n = m_table->len;
 387
 388         m_table->next_flush_time = rte_get_timer_cycles() + drain_tsc;
 389         m_table->len = 0;
 390
 391         ret = rte_eth_tx_burst(port, queueid, m_table->mbufs, n);
 392
 393         port_statistics[port].tx += ret;
 394         if (unlikely(ret < n)) {
 395                 port_statistics[port].dropped += (n - ret);
 396                 do {
 397                         rte_pktmbuf_free(m_table->mbufs[ret]);
 398                 } while (++ret < n);
 399         }
 400 }
 401
 402 /* Enqueue packets for TX and prepare them to be sent */
 403 static int
 404 l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
 405 {
 406         const unsigned lcore_id = rte_lcore_id();
 407         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 408         struct mbuf_table *m_table = &qconf->tx_mbufs[port];
 409         uint16_t len = qconf->tx_mbufs[port].len;
 410
 411         m_table->mbufs[len] = m;
 412
 413         len++;
 414         m_table->len = len;
 415
 416         /* Enough pkts to be sent. */
 417         if (unlikely(len == MAX_PKT_BURST))
 418                 l2fwd_send_burst(qconf, port);
 419
 420         return 0;
 421 }
 422
 423 static void
 424 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 425 {
 426         struct ether_hdr *eth;
 427         void *tmp;
 428         unsigned dst_port;
 429
 430         dst_port = l2fwd_dst_ports[portid];
 431         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 432
 433         /* 02:00:00:00:00:xx */
 434         tmp = &eth->d_addr.addr_bytes[0];
 435         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 436
 437         /* src addr */
 438         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 439
 440         l2fwd_send_packet(m, (uint8_t) dst_port);
 441 }
 442
 443 static void
 444 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 445 {
 446         int64_t err = job->target - result;
 447         int64_t histeresis = job->target / 8;
 448
 449         if (err < -histeresis) {
 450                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 451                         job->period -= UPDATE_STEP_DOWN;
 452         } else if (err > histeresis) {
 453                 if (job->period + UPDATE_STEP_UP < job->max_period)
 454                         job->period += UPDATE_STEP_UP;
 455         }
 456 }
 457
 458 static void
 459 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 460 {
 461         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 462         struct rte_mbuf *m;
 463
 464         const uint8_t port_idx = (uintptr_t) arg;
 465         const unsigned lcore_id = rte_lcore_id();
 466         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 467         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 468         const uint8_t portid = qconf->rx_port_list[port_idx];
 469
 470         uint8_t j;
 471         uint16_t total_nb_rx;
 472
 473         rte_jobstats_start(&qconf->jobs_context, job);
 474
 475         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 476          * function must be called more frequently. */
 477
 478         total_nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 479                         MAX_PKT_BURST);
 480
 481         for (j = 0; j < total_nb_rx; j++) {
 482                 m = pkts_burst[j];
 483                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 484                 l2fwd_simple_forward(m, portid);
 485         }
 486
 487         if (total_nb_rx == MAX_PKT_BURST) {
 488                 const uint16_t nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 489                                 MAX_PKT_BURST);
 490
 491                 total_nb_rx += nb_rx;
 492                 for (j = 0; j < nb_rx; j++) {
 493                         m = pkts_burst[j];
 494                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 495                         l2fwd_simple_forward(m, portid);
 496                 }
 497         }
 498
 499         port_statistics[portid].rx += total_nb_rx;
 500
 501         /* Adjust period time in which we are running here. */
 502         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 503                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 504                                 lcore_id, l2fwd_fwd_job, arg);
 505         }
 506 }
 507
 508 static void
 509 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 510 {
 511         uint64_t now;
 512         unsigned lcore_id;
 513         struct lcore_queue_conf *qconf;
 514         struct mbuf_table *m_table;
 515         uint8_t portid;
 516
 517         lcore_id = rte_lcore_id();
 518         qconf = &lcore_queue_conf[lcore_id];
 519
 520         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 521
 522         now = rte_get_timer_cycles();
 523         lcore_id = rte_lcore_id();
 524         qconf = &lcore_queue_conf[lcore_id];
 525         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 526                 m_table = &qconf->tx_mbufs[portid];
 527                 if (m_table->len == 0 || m_table->next_flush_time <= now)
 528                         continue;
 529
 530                 l2fwd_send_burst(qconf, portid);
 531         }
 532
 533
 534         /* Pass target to indicate that this job is happy of time interwal
 535          * in which it was called. */
 536         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 537 }
 538
 539 /* main processing loop */
 540 static void
 541 l2fwd_main_loop(void)
 542 {
 543         unsigned lcore_id;
 544         unsigned i, portid;
 545         struct lcore_queue_conf *qconf;
 546         uint8_t stats_read_pending = 0;
 547         uint8_t need_manage;
 548
 549         lcore_id = rte_lcore_id();
 550         qconf = &lcore_queue_conf[lcore_id];
 551
 552         if (qconf->n_rx_port == 0) {
 553                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 554                 return;
 555         }
 556
 557         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 558
 559         for (i = 0; i < qconf->n_rx_port; i++) {
 560
 561                 portid = qconf->rx_port_list[i];
 562                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 563                         portid);
 564         }
 565
 566         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 567
 568         for (;;) {
 569                 rte_spinlock_lock(&qconf->lock);
 570
 571                 do {
 572                         rte_jobstats_context_start(&qconf->jobs_context);
 573
 574                         /* Do the Idle job:
 575                          * - Read stats_read_pending flag
 576                          * - check if some real job need to be executed
 577                          */
 578                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 579
 580                         do {
 581                                 uint8_t i;
 582                                 uint64_t now = rte_get_timer_cycles();
 583
 584                                 need_manage = qconf->flush_timer.expire < now;
 585                                 /* Check if we was esked to give a stats. */
 586                                 stats_read_pending =
 587                                                 rte_atomic16_read(&qconf->stats_read_pending);
 588                                 need_manage |= stats_read_pending;
 589
 590                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 591                                         need_manage = qconf->rx_timers[i].expire < now;
 592
 593                         } while (!need_manage);
 594                         rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 595
 596                         rte_timer_manage();
 597                         rte_jobstats_context_finish(&qconf->jobs_context);
 598                 } while (likely(stats_read_pending == 0));
 599
 600                 rte_spinlock_unlock(&qconf->lock);
 601                 rte_pause();
 602         }
 603 }
 604
 605 static int
 606 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 607 {
 608         l2fwd_main_loop();
 609         return 0;
 610 }
 611
 612 /* display usage */
 613 static void
 614 l2fwd_usage(const char *prgname)
 615 {
 616         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 617                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 618                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 619                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 620                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 621                prgname);
 622 }
 623
 624 static int
 625 l2fwd_parse_portmask(const char *portmask)
 626 {
 627         char *end = NULL;
 628         unsigned long pm;
 629
 630         /* parse hexadecimal string */
 631         pm = strtoul(portmask, &end, 16);
 632         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 633                 return -1;
 634
 635         if (pm == 0)
 636                 return -1;
 637
 638         return pm;
 639 }
 640
 641 static unsigned int
 642 l2fwd_parse_nqueue(const char *q_arg)
 643 {
 644         char *end = NULL;
 645         unsigned long n;
 646
 647         /* parse hexadecimal string */
 648         n = strtoul(q_arg, &end, 10);
 649         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 650                 return 0;
 651         if (n == 0)
 652                 return 0;
 653         if (n >= MAX_RX_QUEUE_PER_LCORE)
 654                 return 0;
 655
 656         return n;
 657 }
 658
 659 static int
 660 l2fwd_parse_timer_period(const char *q_arg)
 661 {
 662         char *end = NULL;
 663         int n;
 664
 665         /* parse number string */
 666         n = strtol(q_arg, &end, 10);
 667         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 668                 return -1;
 669         if (n >= MAX_TIMER_PERIOD)
 670                 return -1;
 671
 672         return n;
 673 }
 674
 675 /* Parse the argument given in the command line of the application */
 676 static int
 677 l2fwd_parse_args(int argc, char **argv)
 678 {
 679         int opt, ret;
 680         char **argvopt;
 681         int option_index;
 682         char *prgname = argv[0];
 683         static struct option lgopts[] = {
 684                 {NULL, 0, 0, 0}
 685         };
 686
 687         argvopt = argv;
 688
 689         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 690                                   lgopts, &option_index)) != EOF) {
 691
 692                 switch (opt) {
 693                 /* portmask */
 694                 case 'p':
 695                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 696                         if (l2fwd_enabled_port_mask == 0) {
 697                                 printf("invalid portmask\n");
 698                                 l2fwd_usage(prgname);
 699                                 return -1;
 700                         }
 701                         break;
 702
 703                 /* nqueue */
 704                 case 'q':
 705                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 706                         if (l2fwd_rx_queue_per_lcore == 0) {
 707                                 printf("invalid queue number\n");
 708                                 l2fwd_usage(prgname);
 709                                 return -1;
 710                         }
 711                         break;
 712
 713                 /* timer period */
 714                 case 'T':
 715                         timer_period = l2fwd_parse_timer_period(optarg);
 716                         if (timer_period < 0) {
 717                                 printf("invalid timer period\n");
 718                                 l2fwd_usage(prgname);
 719                                 return -1;
 720                         }
 721                         break;
 722
 723                 /* For thousands separator in printf. */
 724                 case 'l':
 725                         setlocale(LC_ALL, "");
 726                         break;
 727
 728                 /* long options */
 729                 case 0:
 730                         l2fwd_usage(prgname);
 731                         return -1;
 732
 733                 default:
 734                         l2fwd_usage(prgname);
 735                         return -1;
 736                 }
 737         }
 738
 739         if (optind >= 0)
 740                 argv[optind-1] = prgname;
 741
 742         ret = optind-1;
 743         optind = 0; /* reset getopt lib */
 744         return ret;
 745 }
 746
 747 /* Check the link status of all ports in up to 9s, and print them finally */
 748 static void
 749 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 750 {
 751 #define CHECK_INTERVAL 100 /* 100ms */
 752 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 753         uint8_t portid, count, all_ports_up, print_flag = 0;
 754         struct rte_eth_link link;
 755
 756         printf("\nChecking link status");
 757         fflush(stdout);
 758         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 759                 all_ports_up = 1;
 760                 for (portid = 0; portid < port_num; portid++) {
 761                         if ((port_mask & (1 << portid)) == 0)
 762                                 continue;
 763                         memset(&link, 0, sizeof(link));
 764                         rte_eth_link_get_nowait(portid, &link);
 765                         /* print link status if flag set */
 766                         if (print_flag == 1) {
 767                                 if (link.link_status)
 768                                         printf("Port %d Link Up - speed %u "
 769                                                 "Mbps - %s\n", (uint8_t)portid,
 770                                                 (unsigned)link.link_speed,
 771                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 772                                         ("full-duplex") : ("half-duplex\n"));
 773                                 else
 774                                         printf("Port %d Link Down\n",
 775                                                 (uint8_t)portid);
 776                                 continue;
 777                         }
 778                         /* clear all_ports_up flag if any link down */
 779                         if (link.link_status == 0) {
 780                                 all_ports_up = 0;
 781                                 break;
 782                         }
 783                 }
 784                 /* after finally printing all link status, get out */
 785                 if (print_flag == 1)
 786                         break;
 787
 788                 if (all_ports_up == 0) {
 789                         printf(".");
 790                         fflush(stdout);
 791                         rte_delay_ms(CHECK_INTERVAL);
 792                 }
 793
 794                 /* set the print_flag if all ports up or timeout */
 795                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 796                         print_flag = 1;
 797                         printf("done\n");
 798                 }
 799         }
 800 }
 801
 802 int
 803 main(int argc, char **argv)
 804 {
 805         struct lcore_queue_conf *qconf;
 806         struct rte_eth_dev_info dev_info;
 807         unsigned lcore_id, rx_lcore_id;
 808         unsigned nb_ports_in_mask = 0;
 809         int ret;
 810         char name[RTE_JOBSTATS_NAMESIZE];
 811         uint8_t nb_ports;
 812         uint8_t nb_ports_available;
 813         uint8_t portid, last_port;
 814         uint8_t i;
 815
 816         /* init EAL */
 817         ret = rte_eal_init(argc, argv);
 818         if (ret < 0)
 819                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 820         argc -= ret;
 821         argv += ret;
 822
 823         /* parse application arguments (after the EAL ones) */
 824         ret = l2fwd_parse_args(argc, argv);
 825         if (ret < 0)
 826                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 827
 828         rte_timer_subsystem_init();
 829
 830         /* fetch default timer frequency. */
 831         hz = rte_get_timer_hz();
 832
 833         /* create the mbuf pool */
 834         l2fwd_pktmbuf_pool =
 835                 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 836                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 837         if (l2fwd_pktmbuf_pool == NULL)
 838                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 839
 840         nb_ports = rte_eth_dev_count();
 841         if (nb_ports == 0)
 842                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 843
 844         if (nb_ports > RTE_MAX_ETHPORTS)
 845                 nb_ports = RTE_MAX_ETHPORTS;
 846
 847         /* reset l2fwd_dst_ports */
 848         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 849                 l2fwd_dst_ports[portid] = 0;
 850         last_port = 0;
 851
 852         /*
 853          * Each logical core is assigned a dedicated TX queue on each port.
 854          */
 855         for (portid = 0; portid < nb_ports; portid++) {
 856                 /* skip ports that are not enabled */
 857                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 858                         continue;
 859
 860                 if (nb_ports_in_mask % 2) {
 861                         l2fwd_dst_ports[portid] = last_port;
 862                         l2fwd_dst_ports[last_port] = portid;
 863                 } else
 864                         last_port = portid;
 865
 866                 nb_ports_in_mask++;
 867
 868                 rte_eth_dev_info_get(portid, &dev_info);
 869         }
 870         if (nb_ports_in_mask % 2) {
 871                 printf("Notice: odd number of ports in portmask.\n");
 872                 l2fwd_dst_ports[last_port] = last_port;
 873         }
 874
 875         rx_lcore_id = 0;
 876         qconf = NULL;
 877
 878         /* Initialize the port/queue configuration of each logical core */
 879         for (portid = 0; portid < nb_ports; portid++) {
 880                 /* skip ports that are not enabled */
 881                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 882                         continue;
 883
 884                 /* get the lcore_id for this port */
 885                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 886                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 887                        l2fwd_rx_queue_per_lcore) {
 888                         rx_lcore_id++;
 889                         if (rx_lcore_id >= RTE_MAX_LCORE)
 890                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 891                 }
 892
 893                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 894                         /* Assigned a new logical core in the loop above. */
 895                         qconf = &lcore_queue_conf[rx_lcore_id];
 896
 897                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 898                 qconf->n_rx_port++;
 899                 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
 900         }
 901
 902         nb_ports_available = nb_ports;
 903
 904         /* Initialise each port */
 905         for (portid = 0; portid < nb_ports; portid++) {
 906                 /* skip ports that are not enabled */
 907                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 908                         printf("Skipping disabled port %u\n", (unsigned) portid);
 909                         nb_ports_available--;
 910                         continue;
 911                 }
 912                 /* init port */
 913                 printf("Initializing port %u... ", (unsigned) portid);
 914                 fflush(stdout);
 915                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 916                 if (ret < 0)
 917                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 918                                   ret, (unsigned) portid);
 919
 920                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 921
 922                 /* init one RX queue */
 923                 fflush(stdout);
 924                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 925                                              rte_eth_dev_socket_id(portid),
 926                                              NULL,
 927                                              l2fwd_pktmbuf_pool);
 928                 if (ret < 0)
 929                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 930                                   ret, (unsigned) portid);
 931
 932                 /* init one TX queue on each port */
 933                 fflush(stdout);
 934                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 935                                 rte_eth_dev_socket_id(portid),
 936                                 NULL);
 937                 if (ret < 0)
 938                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 939                                 ret, (unsigned) portid);
 940
 941                 /* Start device */
 942                 ret = rte_eth_dev_start(portid);
 943                 if (ret < 0)
 944                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 945                                   ret, (unsigned) portid);
 946
 947                 printf("done:\n");
 948
 949                 rte_eth_promiscuous_enable(portid);
 950
 951                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 952                                 (unsigned) portid,
 953                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 954                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 955                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 956                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 957                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 958                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 959
 960                 /* initialize port stats */
 961                 memset(&port_statistics, 0, sizeof(port_statistics));
 962         }
 963
 964         if (!nb_ports_available) {
 965                 rte_exit(EXIT_FAILURE,
 966                         "All available ports are disabled. Please set portmask.\n");
 967         }
 968
 969         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 970
 971         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 972
 973         RTE_LCORE_FOREACH(lcore_id) {
 974                 qconf = &lcore_queue_conf[lcore_id];
 975
 976                 rte_spinlock_init(&qconf->lock);
 977
 978                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 979                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 980
 981                 if (qconf->n_rx_port == 0) {
 982                         RTE_LOG(INFO, L2FWD,
 983                                 "lcore %u: no ports so no jobs stats context initialization\n",
 984                                 lcore_id);
 985                         continue;
 986                 }
 987                 /* Add flush job.
 988                  * Set fixed period by setting min = max = initial period. Set target to
 989                  * zero as it is irrelevant for this job. */
 990                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 991                                 drain_tsc, 0);
 992
 993                 rte_timer_init(&qconf->flush_timer);
 994                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
 995                                 lcore_id, &l2fwd_flush_job, NULL);
 996
 997                 if (ret < 0) {
 998                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
 999                                         lcore_id, rte_strerror(-ret));
1000                 }
1001
1002                 for (i = 0; i < qconf->n_rx_port; i++) {
1003                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
1004
1005                         portid = qconf->rx_port_list[i];
1006                         printf("Setting forward jon for port %u\n", portid);
1007
1008                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
1009                         /* Setup forward job.
1010                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
1011                          * this is desired optimal RX/TX burst size. */
1012                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1013                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1014
1015                         rte_timer_init(&qconf->rx_timers[i]);
1016                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1017                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1018
1019                         if (ret < 0) {
1020                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1021                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1022                         }
1023                 }
1024         }
1025
1026         if (timer_period)
1027                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1028         else
1029                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1030
1031         /* launch per-lcore init on every lcore */
1032         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
1033         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1034                 if (rte_eal_wait_lcore(lcore_id) < 0)
1035                         return -1;
1036         }
1037
1038         return 0;
1039 }