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                         uint64_t repeats = 0;
 581
 582                         do {
 583                                 uint8_t i;
 584                                 uint64_t now = rte_get_timer_cycles();
 585
 586                                 repeats++;
 587                                 need_manage = qconf->flush_timer.expire < now;
 588                                 /* Check if we was esked to give a stats. */
 589                                 stats_read_pending =
 590                                                 rte_atomic16_read(&qconf->stats_read_pending);
 591                                 need_manage |= stats_read_pending;
 592
 593                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 594                                         need_manage = qconf->rx_timers[i].expire < now;
 595
 596                         } while (!need_manage);
 597
 598                         if (likely(repeats != 1))
 599                                 rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 600                         else
 601                                 rte_jobstats_abort(&qconf->idle_job);
 602
 603                         rte_timer_manage();
 604                         rte_jobstats_context_finish(&qconf->jobs_context);
 605                 } while (likely(stats_read_pending == 0));
 606
 607                 rte_spinlock_unlock(&qconf->lock);
 608                 rte_pause();
 609         }
 610 }
 611
 612 static int
 613 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 614 {
 615         l2fwd_main_loop();
 616         return 0;
 617 }
 618
 619 /* display usage */
 620 static void
 621 l2fwd_usage(const char *prgname)
 622 {
 623         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 624                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 625                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 626                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 627                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 628                prgname);
 629 }
 630
 631 static int
 632 l2fwd_parse_portmask(const char *portmask)
 633 {
 634         char *end = NULL;
 635         unsigned long pm;
 636
 637         /* parse hexadecimal string */
 638         pm = strtoul(portmask, &end, 16);
 639         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 640                 return -1;
 641
 642         if (pm == 0)
 643                 return -1;
 644
 645         return pm;
 646 }
 647
 648 static unsigned int
 649 l2fwd_parse_nqueue(const char *q_arg)
 650 {
 651         char *end = NULL;
 652         unsigned long n;
 653
 654         /* parse hexadecimal string */
 655         n = strtoul(q_arg, &end, 10);
 656         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 657                 return 0;
 658         if (n == 0)
 659                 return 0;
 660         if (n >= MAX_RX_QUEUE_PER_LCORE)
 661                 return 0;
 662
 663         return n;
 664 }
 665
 666 static int
 667 l2fwd_parse_timer_period(const char *q_arg)
 668 {
 669         char *end = NULL;
 670         int n;
 671
 672         /* parse number string */
 673         n = strtol(q_arg, &end, 10);
 674         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 675                 return -1;
 676         if (n >= MAX_TIMER_PERIOD)
 677                 return -1;
 678
 679         return n;
 680 }
 681
 682 /* Parse the argument given in the command line of the application */
 683 static int
 684 l2fwd_parse_args(int argc, char **argv)
 685 {
 686         int opt, ret;
 687         char **argvopt;
 688         int option_index;
 689         char *prgname = argv[0];
 690         static struct option lgopts[] = {
 691                 {NULL, 0, 0, 0}
 692         };
 693
 694         argvopt = argv;
 695
 696         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 697                                   lgopts, &option_index)) != EOF) {
 698
 699                 switch (opt) {
 700                 /* portmask */
 701                 case 'p':
 702                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 703                         if (l2fwd_enabled_port_mask == 0) {
 704                                 printf("invalid portmask\n");
 705                                 l2fwd_usage(prgname);
 706                                 return -1;
 707                         }
 708                         break;
 709
 710                 /* nqueue */
 711                 case 'q':
 712                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 713                         if (l2fwd_rx_queue_per_lcore == 0) {
 714                                 printf("invalid queue number\n");
 715                                 l2fwd_usage(prgname);
 716                                 return -1;
 717                         }
 718                         break;
 719
 720                 /* timer period */
 721                 case 'T':
 722                         timer_period = l2fwd_parse_timer_period(optarg);
 723                         if (timer_period < 0) {
 724                                 printf("invalid timer period\n");
 725                                 l2fwd_usage(prgname);
 726                                 return -1;
 727                         }
 728                         break;
 729
 730                 /* For thousands separator in printf. */
 731                 case 'l':
 732                         setlocale(LC_ALL, "");
 733                         break;
 734
 735                 /* long options */
 736                 case 0:
 737                         l2fwd_usage(prgname);
 738                         return -1;
 739
 740                 default:
 741                         l2fwd_usage(prgname);
 742                         return -1;
 743                 }
 744         }
 745
 746         if (optind >= 0)
 747                 argv[optind-1] = prgname;
 748
 749         ret = optind-1;
 750         optind = 0; /* reset getopt lib */
 751         return ret;
 752 }
 753
 754 /* Check the link status of all ports in up to 9s, and print them finally */
 755 static void
 756 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 757 {
 758 #define CHECK_INTERVAL 100 /* 100ms */
 759 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 760         uint8_t portid, count, all_ports_up, print_flag = 0;
 761         struct rte_eth_link link;
 762
 763         printf("\nChecking link status");
 764         fflush(stdout);
 765         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 766                 all_ports_up = 1;
 767                 for (portid = 0; portid < port_num; portid++) {
 768                         if ((port_mask & (1 << portid)) == 0)
 769                                 continue;
 770                         memset(&link, 0, sizeof(link));
 771                         rte_eth_link_get_nowait(portid, &link);
 772                         /* print link status if flag set */
 773                         if (print_flag == 1) {
 774                                 if (link.link_status)
 775                                         printf("Port %d Link Up - speed %u "
 776                                                 "Mbps - %s\n", (uint8_t)portid,
 777                                                 (unsigned)link.link_speed,
 778                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 779                                         ("full-duplex") : ("half-duplex\n"));
 780                                 else
 781                                         printf("Port %d Link Down\n",
 782                                                 (uint8_t)portid);
 783                                 continue;
 784                         }
 785                         /* clear all_ports_up flag if any link down */
 786                         if (link.link_status == 0) {
 787                                 all_ports_up = 0;
 788                                 break;
 789                         }
 790                 }
 791                 /* after finally printing all link status, get out */
 792                 if (print_flag == 1)
 793                         break;
 794
 795                 if (all_ports_up == 0) {
 796                         printf(".");
 797                         fflush(stdout);
 798                         rte_delay_ms(CHECK_INTERVAL);
 799                 }
 800
 801                 /* set the print_flag if all ports up or timeout */
 802                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 803                         print_flag = 1;
 804                         printf("done\n");
 805                 }
 806         }
 807 }
 808
 809 int
 810 main(int argc, char **argv)
 811 {
 812         struct lcore_queue_conf *qconf;
 813         struct rte_eth_dev_info dev_info;
 814         unsigned lcore_id, rx_lcore_id;
 815         unsigned nb_ports_in_mask = 0;
 816         int ret;
 817         char name[RTE_JOBSTATS_NAMESIZE];
 818         uint8_t nb_ports;
 819         uint8_t nb_ports_available;
 820         uint8_t portid, last_port;
 821         uint8_t i;
 822
 823         /* init EAL */
 824         ret = rte_eal_init(argc, argv);
 825         if (ret < 0)
 826                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 827         argc -= ret;
 828         argv += ret;
 829
 830         /* parse application arguments (after the EAL ones) */
 831         ret = l2fwd_parse_args(argc, argv);
 832         if (ret < 0)
 833                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 834
 835         rte_timer_subsystem_init();
 836
 837         /* fetch default timer frequency. */
 838         hz = rte_get_timer_hz();
 839
 840         /* create the mbuf pool */
 841         l2fwd_pktmbuf_pool =
 842                 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 843                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 844         if (l2fwd_pktmbuf_pool == NULL)
 845                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 846
 847         nb_ports = rte_eth_dev_count();
 848         if (nb_ports == 0)
 849                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 850
 851         if (nb_ports > RTE_MAX_ETHPORTS)
 852                 nb_ports = RTE_MAX_ETHPORTS;
 853
 854         /* reset l2fwd_dst_ports */
 855         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 856                 l2fwd_dst_ports[portid] = 0;
 857         last_port = 0;
 858
 859         /*
 860          * Each logical core is assigned a dedicated TX queue on each port.
 861          */
 862         for (portid = 0; portid < nb_ports; portid++) {
 863                 /* skip ports that are not enabled */
 864                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 865                         continue;
 866
 867                 if (nb_ports_in_mask % 2) {
 868                         l2fwd_dst_ports[portid] = last_port;
 869                         l2fwd_dst_ports[last_port] = portid;
 870                 } else
 871                         last_port = portid;
 872
 873                 nb_ports_in_mask++;
 874
 875                 rte_eth_dev_info_get(portid, &dev_info);
 876         }
 877         if (nb_ports_in_mask % 2) {
 878                 printf("Notice: odd number of ports in portmask.\n");
 879                 l2fwd_dst_ports[last_port] = last_port;
 880         }
 881
 882         rx_lcore_id = 0;
 883         qconf = NULL;
 884
 885         /* Initialize the port/queue configuration of each logical core */
 886         for (portid = 0; portid < nb_ports; portid++) {
 887                 /* skip ports that are not enabled */
 888                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 889                         continue;
 890
 891                 /* get the lcore_id for this port */
 892                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 893                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 894                        l2fwd_rx_queue_per_lcore) {
 895                         rx_lcore_id++;
 896                         if (rx_lcore_id >= RTE_MAX_LCORE)
 897                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 898                 }
 899
 900                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 901                         /* Assigned a new logical core in the loop above. */
 902                         qconf = &lcore_queue_conf[rx_lcore_id];
 903
 904                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 905                 qconf->n_rx_port++;
 906                 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
 907         }
 908
 909         nb_ports_available = nb_ports;
 910
 911         /* Initialise each port */
 912         for (portid = 0; portid < nb_ports; portid++) {
 913                 /* skip ports that are not enabled */
 914                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 915                         printf("Skipping disabled port %u\n", (unsigned) portid);
 916                         nb_ports_available--;
 917                         continue;
 918                 }
 919                 /* init port */
 920                 printf("Initializing port %u... ", (unsigned) portid);
 921                 fflush(stdout);
 922                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 923                 if (ret < 0)
 924                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 925                                   ret, (unsigned) portid);
 926
 927                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 928
 929                 /* init one RX queue */
 930                 fflush(stdout);
 931                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 932                                              rte_eth_dev_socket_id(portid),
 933                                              NULL,
 934                                              l2fwd_pktmbuf_pool);
 935                 if (ret < 0)
 936                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 937                                   ret, (unsigned) portid);
 938
 939                 /* init one TX queue on each port */
 940                 fflush(stdout);
 941                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 942                                 rte_eth_dev_socket_id(portid),
 943                                 NULL);
 944                 if (ret < 0)
 945                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 946                                 ret, (unsigned) portid);
 947
 948                 /* Start device */
 949                 ret = rte_eth_dev_start(portid);
 950                 if (ret < 0)
 951                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 952                                   ret, (unsigned) portid);
 953
 954                 printf("done:\n");
 955
 956                 rte_eth_promiscuous_enable(portid);
 957
 958                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 959                                 (unsigned) portid,
 960                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 961                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 962                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 963                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 964                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 965                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 966
 967                 /* initialize port stats */
 968                 memset(&port_statistics, 0, sizeof(port_statistics));
 969         }
 970
 971         if (!nb_ports_available) {
 972                 rte_exit(EXIT_FAILURE,
 973                         "All available ports are disabled. Please set portmask.\n");
 974         }
 975
 976         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 977
 978         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 979
 980         RTE_LCORE_FOREACH(lcore_id) {
 981                 qconf = &lcore_queue_conf[lcore_id];
 982
 983                 rte_spinlock_init(&qconf->lock);
 984
 985                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 986                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 987
 988                 if (qconf->n_rx_port == 0) {
 989                         RTE_LOG(INFO, L2FWD,
 990                                 "lcore %u: no ports so no jobs stats context initialization\n",
 991                                 lcore_id);
 992                         continue;
 993                 }
 994                 /* Add flush job.
 995                  * Set fixed period by setting min = max = initial period. Set target to
 996                  * zero as it is irrelevant for this job. */
 997                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 998                                 drain_tsc, 0);
 999
1000                 rte_timer_init(&qconf->flush_timer);
1001                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
1002                                 lcore_id, &l2fwd_flush_job, NULL);
1003
1004                 if (ret < 0) {
1005                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
1006                                         lcore_id, rte_strerror(-ret));
1007                 }
1008
1009                 for (i = 0; i < qconf->n_rx_port; i++) {
1010                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
1011
1012                         portid = qconf->rx_port_list[i];
1013                         printf("Setting forward jon for port %u\n", portid);
1014
1015                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
1016                         /* Setup forward job.
1017                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
1018                          * this is desired optimal RX/TX burst size. */
1019                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1020                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1021
1022                         rte_timer_init(&qconf->rx_timers[i]);
1023                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1024                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1025
1026                         if (ret < 0) {
1027                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1028                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1029                         }
1030                 }
1031         }
1032
1033         if (timer_period)
1034                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1035         else
1036                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1037
1038         /* launch per-lcore init on every lcore */
1039         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
1040         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1041                 if (rte_eal_wait_lcore(lcore_id) < 0)
1042                         return -1;
1043         }
1044
1045         return 0;
1046 }