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_tailq.h>
  48 #include <rte_eal.h>
  49 #include <rte_per_lcore.h>
  50 #include <rte_launch.h>
  51 #include <rte_atomic.h>
  52 #include <rte_cycles.h>
  53 #include <rte_prefetch.h>
  54 #include <rte_lcore.h>
  55 #include <rte_per_lcore.h>
  56 #include <rte_branch_prediction.h>
  57 #include <rte_interrupts.h>
  58 #include <rte_pci.h>
  59 #include <rte_debug.h>
  60 #include <rte_ether.h>
  61 #include <rte_ethdev.h>
  62 #include <rte_ring.h>
  63 #include <rte_mempool.h>
  64 #include <rte_mbuf.h>
  65 #include <rte_spinlock.h>
  66
  67 #include <rte_errno.h>
  68 #include <rte_jobstats.h>
  69 #include <rte_timer.h>
  70 #include <rte_alarm.h>
  71
  72 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  73
  74 #define MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
  75 #define NB_MBUF   8192
  76
  77 #define MAX_PKT_BURST 32
  78 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  79
  80 /*
  81  * Configurable number of RX/TX ring descriptors
  82  */
  83 #define RTE_TEST_RX_DESC_DEFAULT 128
  84 #define RTE_TEST_TX_DESC_DEFAULT 512
  85 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  86 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  87
  88 /* ethernet addresses of ports */
  89 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  90
  91 /* mask of enabled ports */
  92 static uint32_t l2fwd_enabled_port_mask;
  93
  94 /* list of enabled ports */
  95 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  96
  97 #define UPDATE_STEP_UP 1
  98 #define UPDATE_STEP_DOWN 32
  99
 100 static unsigned int l2fwd_rx_queue_per_lcore = 1;
 101
 102 struct mbuf_table {
 103         uint64_t next_flush_time;
 104         unsigned len;
 105         struct rte_mbuf *mbufs[MAX_PKT_BURST];
 106 };
 107
 108 #define MAX_RX_QUEUE_PER_LCORE 16
 109 #define MAX_TX_QUEUE_PER_PORT 16
 110 struct lcore_queue_conf {
 111         unsigned n_rx_port;
 112         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 113         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 114
 115         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
 116         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
 117
 118         struct rte_timer flush_timer;
 119         struct rte_jobstats flush_job;
 120         struct rte_jobstats idle_job;
 121         struct rte_jobstats_context jobs_context;
 122
 123         rte_atomic16_t stats_read_pending;
 124         rte_spinlock_t lock;
 125 } __rte_cache_aligned;
 126 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 127
 128 static const struct rte_eth_conf port_conf = {
 129         .rxmode = {
 130                 .split_hdr_size = 0,
 131                 .header_split   = 0, /**< Header Split disabled */
 132                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 133                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 134                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 135                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 136         },
 137         .txmode = {
 138                 .mq_mode = ETH_MQ_TX_NONE,
 139         },
 140 };
 141
 142 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 143
 144 /* Per-port statistics struct */
 145 struct l2fwd_port_statistics {
 146         uint64_t tx;
 147         uint64_t rx;
 148         uint64_t dropped;
 149 } __rte_cache_aligned;
 150 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 151
 152 /* 1 day max */
 153 #define MAX_TIMER_PERIOD 86400
 154 /* default period is 10 seconds */
 155 static int64_t timer_period = 10;
 156 /* default timer frequency */
 157 static double hz;
 158 /* BURST_TX_DRAIN_US converted to cycles */
 159 uint64_t drain_tsc;
 160 /* Convert cycles to ns */
 161 static inline double
 162 cycles_to_ns(uint64_t cycles)
 163 {
 164         double t = cycles;
 165
 166         t *= (double)NS_PER_S;
 167         t /= hz;
 168         return t;
 169 }
 170
 171 static void
 172 show_lcore_stats(unsigned lcore_id)
 173 {
 174         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 175         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 176         struct rte_jobstats *job;
 177         uint8_t i;
 178
 179         /* LCore statistics. */
 180         uint64_t stats_period, loop_count;
 181         uint64_t exec, exec_min, exec_max;
 182         uint64_t management, management_min, management_max;
 183         uint64_t busy, busy_min, busy_max;
 184
 185         /* Jobs statistics. */
 186         const uint8_t port_cnt = qconf->n_rx_port;
 187         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 188         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 189                                 jobs_exec_max[port_cnt];
 190
 191         uint64_t flush_exec_cnt, flush_period;
 192         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 193
 194         uint64_t idle_exec_cnt;
 195         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 196         uint64_t collection_time = rte_get_timer_cycles();
 197
 198         /* Ask forwarding thread to give us stats. */
 199         rte_atomic16_set(&qconf->stats_read_pending, 1);
 200         rte_spinlock_lock(&qconf->lock);
 201         rte_atomic16_set(&qconf->stats_read_pending, 0);
 202
 203         /* Collect context statistics. */
 204         stats_period = ctx->state_time - ctx->start_time;
 205         loop_count = ctx->loop_cnt;
 206
 207         exec = ctx->exec_time;
 208         exec_min = ctx->min_exec_time;
 209         exec_max = ctx->max_exec_time;
 210
 211         management = ctx->management_time;
 212         management_min = ctx->min_management_time;
 213         management_max = ctx->max_management_time;
 214
 215         rte_jobstats_context_reset(ctx);
 216
 217         for (i = 0; i < port_cnt; i++) {
 218                 job = &qconf->port_fwd_jobs[i];
 219
 220                 jobs_exec_cnt[i] = job->exec_cnt;
 221                 jobs_period[i] = job->period;
 222
 223                 jobs_exec[i] = job->exec_time;
 224                 jobs_exec_min[i] = job->min_exec_time;
 225                 jobs_exec_max[i] = job->max_exec_time;
 226
 227                 rte_jobstats_reset(job);
 228         }
 229
 230         flush_exec_cnt = qconf->flush_job.exec_cnt;
 231         flush_period = qconf->flush_job.period;
 232         flush_exec = qconf->flush_job.exec_time;
 233         flush_exec_min = qconf->flush_job.min_exec_time;
 234         flush_exec_max = qconf->flush_job.max_exec_time;
 235         rte_jobstats_reset(&qconf->flush_job);
 236
 237         idle_exec_cnt = qconf->idle_job.exec_cnt;
 238         idle_exec = qconf->idle_job.exec_time;
 239         idle_exec_min = qconf->idle_job.min_exec_time;
 240         idle_exec_max = qconf->idle_job.max_exec_time;
 241         rte_jobstats_reset(&qconf->idle_job);
 242
 243         rte_spinlock_unlock(&qconf->lock);
 244
 245         exec -= idle_exec;
 246         busy = exec + management;
 247         busy_min = exec_min + management_min;
 248         busy_max = exec_max + management_max;
 249
 250
 251         collection_time = rte_get_timer_cycles() - collection_time;
 252
 253 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 254
 255         printf("\n----------------"
 256                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 257                         "\n%-18s %14s %7s %10s %10s %10s "
 258                         "\n%-18s %'14.0f"
 259                         "\n%-18s %'14" PRIu64
 260                         STAT_FMT /* Exec */
 261                         STAT_FMT /* Management */
 262                         STAT_FMT /* Busy */
 263                         STAT_FMT, /* Idle  */
 264                         lcore_id, cycles_to_ns(collection_time),
 265                         "Stat type", "total", "%total", "avg", "min", "max",
 266                         "Stats duration:", cycles_to_ns(stats_period),
 267                         "Loop count:", loop_count,
 268                         "Exec time",
 269                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 270                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 271                         cycles_to_ns(exec_min),
 272                         cycles_to_ns(exec_max),
 273                         "Management time",
 274                         cycles_to_ns(management), management * 100.0 / stats_period,
 275                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 276                         cycles_to_ns(management_min),
 277                         cycles_to_ns(management_max),
 278                         "Exec + management",
 279                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 280                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 281                         cycles_to_ns(busy_min),
 282                         cycles_to_ns(busy_max),
 283                         "Idle (job)",
 284                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 285                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 286                         cycles_to_ns(idle_exec_min),
 287                         cycles_to_ns(idle_exec_max));
 288
 289         for (i = 0; i < qconf->n_rx_port; i++) {
 290                 job = &qconf->port_fwd_jobs[i];
 291                 printf("\n\nJob %" PRIu32 ": %-20s "
 292                                 "\n%-18s %'14" PRIu64
 293                                 "\n%-18s %'14.0f"
 294                                 STAT_FMT,
 295                                 i, job->name,
 296                                 "Exec count:", jobs_exec_cnt[i],
 297                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 298                                 "Exec time",
 299                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 300                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 301                                                 : 0),
 302                                 cycles_to_ns(jobs_exec_min[i]),
 303                                 cycles_to_ns(jobs_exec_max[i]));
 304         }
 305
 306         if (qconf->n_rx_port > 0) {
 307                 job = &qconf->flush_job;
 308                 printf("\n\nJob %" PRIu32 ": %-20s "
 309                                 "\n%-18s %'14" PRIu64
 310                                 "\n%-18s %'14.0f"
 311                                 STAT_FMT,
 312                                 i, job->name,
 313                                 "Exec count:", flush_exec_cnt,
 314                                 "Exec period: ", cycles_to_ns(flush_period),
 315                                 "Exec time",
 316                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 317                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 318                                 cycles_to_ns(flush_exec_min),
 319                                 cycles_to_ns(flush_exec_max));
 320         }
 321 }
 322
 323 /* Print out statistics on packets dropped */
 324 static void
 325 show_stats_cb(__rte_unused void *param)
 326 {
 327         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 328         unsigned portid, lcore_id;
 329
 330         total_packets_dropped = 0;
 331         total_packets_tx = 0;
 332         total_packets_rx = 0;
 333
 334         const char clr[] = { 27, '[', '2', 'J', '\0' };
 335         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 336
 337         /* Clear screen and move to top left */
 338         printf("%s%s"
 339                         "\nPort statistics ===================================",
 340                         clr, topLeft);
 341
 342         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 343                 /* skip disabled ports */
 344                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 345                         continue;
 346                 printf("\nStatistics for port %u ------------------------------"
 347                                 "\nPackets sent: %24"PRIu64
 348                                 "\nPackets received: %20"PRIu64
 349                                 "\nPackets dropped: %21"PRIu64,
 350                                 portid,
 351                                 port_statistics[portid].tx,
 352                                 port_statistics[portid].rx,
 353                                 port_statistics[portid].dropped);
 354
 355                 total_packets_dropped += port_statistics[portid].dropped;
 356                 total_packets_tx += port_statistics[portid].tx;
 357                 total_packets_rx += port_statistics[portid].rx;
 358         }
 359
 360         printf("\nAggregate statistics ==============================="
 361                         "\nTotal packets sent: %18"PRIu64
 362                         "\nTotal packets received: %14"PRIu64
 363                         "\nTotal packets dropped: %15"PRIu64
 364                         "\n====================================================",
 365                         total_packets_tx,
 366                         total_packets_rx,
 367                         total_packets_dropped);
 368
 369         RTE_LCORE_FOREACH(lcore_id) {
 370                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 371                         show_lcore_stats(lcore_id);
 372         }
 373
 374         printf("\n====================================================\n");
 375         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 376 }
 377
 378 /* Send the burst of packets on an output interface */
 379 static void
 380 l2fwd_send_burst(struct lcore_queue_conf *qconf, uint8_t port)
 381 {
 382         struct mbuf_table *m_table;
 383         uint16_t ret;
 384         uint16_t queueid = 0;
 385         uint16_t n;
 386
 387         m_table = &qconf->tx_mbufs[port];
 388         n = m_table->len;
 389
 390         m_table->next_flush_time = rte_get_timer_cycles() + drain_tsc;
 391         m_table->len = 0;
 392
 393         ret = rte_eth_tx_burst(port, queueid, m_table->mbufs, n);
 394
 395         port_statistics[port].tx += ret;
 396         if (unlikely(ret < n)) {
 397                 port_statistics[port].dropped += (n - ret);
 398                 do {
 399                         rte_pktmbuf_free(m_table->mbufs[ret]);
 400                 } while (++ret < n);
 401         }
 402 }
 403
 404 /* Enqueue packets for TX and prepare them to be sent */
 405 static int
 406 l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
 407 {
 408         const unsigned lcore_id = rte_lcore_id();
 409         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 410         struct mbuf_table *m_table = &qconf->tx_mbufs[port];
 411         uint16_t len = qconf->tx_mbufs[port].len;
 412
 413         m_table->mbufs[len] = m;
 414
 415         len++;
 416         m_table->len = len;
 417
 418         /* Enough pkts to be sent. */
 419         if (unlikely(len == MAX_PKT_BURST))
 420                 l2fwd_send_burst(qconf, port);
 421
 422         return 0;
 423 }
 424
 425 static void
 426 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 427 {
 428         struct ether_hdr *eth;
 429         void *tmp;
 430         unsigned dst_port;
 431
 432         dst_port = l2fwd_dst_ports[portid];
 433         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 434
 435         /* 02:00:00:00:00:xx */
 436         tmp = &eth->d_addr.addr_bytes[0];
 437         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 438
 439         /* src addr */
 440         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 441
 442         l2fwd_send_packet(m, (uint8_t) dst_port);
 443 }
 444
 445 static void
 446 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 447 {
 448         int64_t err = job->target - result;
 449         int64_t histeresis = job->target / 8;
 450
 451         if (err < -histeresis) {
 452                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 453                         job->period -= UPDATE_STEP_DOWN;
 454         } else if (err > histeresis) {
 455                 if (job->period + UPDATE_STEP_UP < job->max_period)
 456                         job->period += UPDATE_STEP_UP;
 457         }
 458 }
 459
 460 static void
 461 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 462 {
 463         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 464         struct rte_mbuf *m;
 465
 466         const uint8_t port_idx = (uintptr_t) arg;
 467         const unsigned lcore_id = rte_lcore_id();
 468         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 469         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 470         const uint8_t portid = qconf->rx_port_list[port_idx];
 471
 472         uint8_t j;
 473         uint16_t total_nb_rx;
 474
 475         rte_jobstats_start(&qconf->jobs_context, job);
 476
 477         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 478          * function must be called more frequently. */
 479
 480         total_nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 481                         MAX_PKT_BURST);
 482
 483         for (j = 0; j < total_nb_rx; j++) {
 484                 m = pkts_burst[j];
 485                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 486                 l2fwd_simple_forward(m, portid);
 487         }
 488
 489         if (total_nb_rx == MAX_PKT_BURST) {
 490                 const uint16_t nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 491                                 MAX_PKT_BURST);
 492
 493                 total_nb_rx += nb_rx;
 494                 for (j = 0; j < nb_rx; j++) {
 495                         m = pkts_burst[j];
 496                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 497                         l2fwd_simple_forward(m, portid);
 498                 }
 499         }
 500
 501         port_statistics[portid].rx += total_nb_rx;
 502
 503         /* Adjust period time in which we are running here. */
 504         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 505                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 506                                 lcore_id, l2fwd_fwd_job, arg);
 507         }
 508 }
 509
 510 static void
 511 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 512 {
 513         uint64_t now;
 514         unsigned lcore_id;
 515         struct lcore_queue_conf *qconf;
 516         struct mbuf_table *m_table;
 517         uint8_t portid;
 518
 519         lcore_id = rte_lcore_id();
 520         qconf = &lcore_queue_conf[lcore_id];
 521
 522         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 523
 524         now = rte_get_timer_cycles();
 525         lcore_id = rte_lcore_id();
 526         qconf = &lcore_queue_conf[lcore_id];
 527         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 528                 m_table = &qconf->tx_mbufs[portid];
 529                 if (m_table->len == 0 || m_table->next_flush_time <= now)
 530                         continue;
 531
 532                 l2fwd_send_burst(qconf, portid);
 533         }
 534
 535
 536         /* Pass target to indicate that this job is happy of time interwal
 537          * in which it was called. */
 538         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 539 }
 540
 541 /* main processing loop */
 542 static void
 543 l2fwd_main_loop(void)
 544 {
 545         unsigned lcore_id;
 546         unsigned i, portid;
 547         struct lcore_queue_conf *qconf;
 548         uint8_t stats_read_pending = 0;
 549         uint8_t need_manage;
 550
 551         lcore_id = rte_lcore_id();
 552         qconf = &lcore_queue_conf[lcore_id];
 553
 554         if (qconf->n_rx_port == 0) {
 555                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 556                 return;
 557         }
 558
 559         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 560
 561         for (i = 0; i < qconf->n_rx_port; i++) {
 562
 563                 portid = qconf->rx_port_list[i];
 564                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 565                         portid);
 566         }
 567
 568         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 569
 570         for (;;) {
 571                 rte_spinlock_lock(&qconf->lock);
 572
 573                 do {
 574                         rte_jobstats_context_start(&qconf->jobs_context);
 575
 576                         /* Do the Idle job:
 577                          * - Read stats_read_pending flag
 578                          * - check if some real job need to be executed
 579                          */
 580                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 581
 582                         do {
 583                                 uint8_t i;
 584                                 uint64_t now = rte_get_timer_cycles();
 585
 586                                 need_manage = qconf->flush_timer.expire < now;
 587                                 /* Check if we was esked to give a stats. */
 588                                 stats_read_pending =
 589                                                 rte_atomic16_read(&qconf->stats_read_pending);
 590                                 need_manage |= stats_read_pending;
 591
 592                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 593                                         need_manage = qconf->rx_timers[i].expire < now;
 594
 595                         } while (!need_manage);
 596                         rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 597
 598                         rte_timer_manage();
 599                         rte_jobstats_context_finish(&qconf->jobs_context);
 600                 } while (likely(stats_read_pending == 0));
 601
 602                 rte_spinlock_unlock(&qconf->lock);
 603                 rte_pause();
 604         }
 605 }
 606
 607 static int
 608 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 609 {
 610         l2fwd_main_loop();
 611         return 0;
 612 }
 613
 614 /* display usage */
 615 static void
 616 l2fwd_usage(const char *prgname)
 617 {
 618         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 619                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 620                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 621                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 622                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 623                prgname);
 624 }
 625
 626 static int
 627 l2fwd_parse_portmask(const char *portmask)
 628 {
 629         char *end = NULL;
 630         unsigned long pm;
 631
 632         /* parse hexadecimal string */
 633         pm = strtoul(portmask, &end, 16);
 634         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 635                 return -1;
 636
 637         if (pm == 0)
 638                 return -1;
 639
 640         return pm;
 641 }
 642
 643 static unsigned int
 644 l2fwd_parse_nqueue(const char *q_arg)
 645 {
 646         char *end = NULL;
 647         unsigned long n;
 648
 649         /* parse hexadecimal string */
 650         n = strtoul(q_arg, &end, 10);
 651         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 652                 return 0;
 653         if (n == 0)
 654                 return 0;
 655         if (n >= MAX_RX_QUEUE_PER_LCORE)
 656                 return 0;
 657
 658         return n;
 659 }
 660
 661 static int
 662 l2fwd_parse_timer_period(const char *q_arg)
 663 {
 664         char *end = NULL;
 665         int n;
 666
 667         /* parse number string */
 668         n = strtol(q_arg, &end, 10);
 669         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 670                 return -1;
 671         if (n >= MAX_TIMER_PERIOD)
 672                 return -1;
 673
 674         return n;
 675 }
 676
 677 /* Parse the argument given in the command line of the application */
 678 static int
 679 l2fwd_parse_args(int argc, char **argv)
 680 {
 681         int opt, ret;
 682         char **argvopt;
 683         int option_index;
 684         char *prgname = argv[0];
 685         static struct option lgopts[] = {
 686                 {NULL, 0, 0, 0}
 687         };
 688
 689         argvopt = argv;
 690
 691         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 692                                   lgopts, &option_index)) != EOF) {
 693
 694                 switch (opt) {
 695                 /* portmask */
 696                 case 'p':
 697                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 698                         if (l2fwd_enabled_port_mask == 0) {
 699                                 printf("invalid portmask\n");
 700                                 l2fwd_usage(prgname);
 701                                 return -1;
 702                         }
 703                         break;
 704
 705                 /* nqueue */
 706                 case 'q':
 707                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 708                         if (l2fwd_rx_queue_per_lcore == 0) {
 709                                 printf("invalid queue number\n");
 710                                 l2fwd_usage(prgname);
 711                                 return -1;
 712                         }
 713                         break;
 714
 715                 /* timer period */
 716                 case 'T':
 717                         timer_period = l2fwd_parse_timer_period(optarg);
 718                         if (timer_period < 0) {
 719                                 printf("invalid timer period\n");
 720                                 l2fwd_usage(prgname);
 721                                 return -1;
 722                         }
 723                         break;
 724
 725                 /* For thousands separator in printf. */
 726                 case 'l':
 727                         setlocale(LC_ALL, "");
 728                         break;
 729
 730                 /* long options */
 731                 case 0:
 732                         l2fwd_usage(prgname);
 733                         return -1;
 734
 735                 default:
 736                         l2fwd_usage(prgname);
 737                         return -1;
 738                 }
 739         }
 740
 741         if (optind >= 0)
 742                 argv[optind-1] = prgname;
 743
 744         ret = optind-1;
 745         optind = 0; /* reset getopt lib */
 746         return ret;
 747 }
 748
 749 /* Check the link status of all ports in up to 9s, and print them finally */
 750 static void
 751 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 752 {
 753 #define CHECK_INTERVAL 100 /* 100ms */
 754 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 755         uint8_t portid, count, all_ports_up, print_flag = 0;
 756         struct rte_eth_link link;
 757
 758         printf("\nChecking link status");
 759         fflush(stdout);
 760         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 761                 all_ports_up = 1;
 762                 for (portid = 0; portid < port_num; portid++) {
 763                         if ((port_mask & (1 << portid)) == 0)
 764                                 continue;
 765                         memset(&link, 0, sizeof(link));
 766                         rte_eth_link_get_nowait(portid, &link);
 767                         /* print link status if flag set */
 768                         if (print_flag == 1) {
 769                                 if (link.link_status)
 770                                         printf("Port %d Link Up - speed %u "
 771                                                 "Mbps - %s\n", (uint8_t)portid,
 772                                                 (unsigned)link.link_speed,
 773                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 774                                         ("full-duplex") : ("half-duplex\n"));
 775                                 else
 776                                         printf("Port %d Link Down\n",
 777                                                 (uint8_t)portid);
 778                                 continue;
 779                         }
 780                         /* clear all_ports_up flag if any link down */
 781                         if (link.link_status == 0) {
 782                                 all_ports_up = 0;
 783                                 break;
 784                         }
 785                 }
 786                 /* after finally printing all link status, get out */
 787                 if (print_flag == 1)
 788                         break;
 789
 790                 if (all_ports_up == 0) {
 791                         printf(".");
 792                         fflush(stdout);
 793                         rte_delay_ms(CHECK_INTERVAL);
 794                 }
 795
 796                 /* set the print_flag if all ports up or timeout */
 797                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 798                         print_flag = 1;
 799                         printf("done\n");
 800                 }
 801         }
 802 }
 803
 804 int
 805 main(int argc, char **argv)
 806 {
 807         struct lcore_queue_conf *qconf;
 808         struct rte_eth_dev_info dev_info;
 809         unsigned lcore_id, rx_lcore_id;
 810         unsigned nb_ports_in_mask = 0;
 811         int ret;
 812         char name[RTE_JOBSTATS_NAMESIZE];
 813         uint8_t nb_ports;
 814         uint8_t nb_ports_available;
 815         uint8_t portid, last_port;
 816         uint8_t i;
 817
 818         /* init EAL */
 819         ret = rte_eal_init(argc, argv);
 820         if (ret < 0)
 821                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 822         argc -= ret;
 823         argv += ret;
 824
 825         /* parse application arguments (after the EAL ones) */
 826         ret = l2fwd_parse_args(argc, argv);
 827         if (ret < 0)
 828                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 829
 830         rte_timer_subsystem_init();
 831
 832         /* fetch default timer frequency. */
 833         hz = rte_get_timer_hz();
 834
 835         /* create the mbuf pool */
 836         l2fwd_pktmbuf_pool =
 837                 rte_mempool_create("mbuf_pool", NB_MBUF,
 838                                    MBUF_SIZE, 32,
 839                                    sizeof(struct rte_pktmbuf_pool_private),
 840                                    rte_pktmbuf_pool_init, NULL,
 841                                    rte_pktmbuf_init, NULL,
 842                                    rte_socket_id(), 0);
 843         if (l2fwd_pktmbuf_pool == NULL)
 844                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 845
 846         nb_ports = rte_eth_dev_count();
 847         if (nb_ports == 0)
 848                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 849
 850         if (nb_ports > RTE_MAX_ETHPORTS)
 851                 nb_ports = RTE_MAX_ETHPORTS;
 852
 853         /* reset l2fwd_dst_ports */
 854         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 855                 l2fwd_dst_ports[portid] = 0;
 856         last_port = 0;
 857
 858         /*
 859          * Each logical core is assigned a dedicated TX queue on each port.
 860          */
 861         for (portid = 0; portid < nb_ports; portid++) {
 862                 /* skip ports that are not enabled */
 863                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 864                         continue;
 865
 866                 if (nb_ports_in_mask % 2) {
 867                         l2fwd_dst_ports[portid] = last_port;
 868                         l2fwd_dst_ports[last_port] = portid;
 869                 } else
 870                         last_port = portid;
 871
 872                 nb_ports_in_mask++;
 873
 874                 rte_eth_dev_info_get(portid, &dev_info);
 875         }
 876         if (nb_ports_in_mask % 2) {
 877                 printf("Notice: odd number of ports in portmask.\n");
 878                 l2fwd_dst_ports[last_port] = last_port;
 879         }
 880
 881         rx_lcore_id = 0;
 882         qconf = NULL;
 883
 884         /* Initialize the port/queue configuration of each logical core */
 885         for (portid = 0; portid < nb_ports; portid++) {
 886                 /* skip ports that are not enabled */
 887                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 888                         continue;
 889
 890                 /* get the lcore_id for this port */
 891                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 892                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 893                        l2fwd_rx_queue_per_lcore) {
 894                         rx_lcore_id++;
 895                         if (rx_lcore_id >= RTE_MAX_LCORE)
 896                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 897                 }
 898
 899                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 900                         /* Assigned a new logical core in the loop above. */
 901                         qconf = &lcore_queue_conf[rx_lcore_id];
 902
 903                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 904                 qconf->n_rx_port++;
 905                 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
 906         }
 907
 908         nb_ports_available = nb_ports;
 909
 910         /* Initialise each port */
 911         for (portid = 0; portid < nb_ports; portid++) {
 912                 /* skip ports that are not enabled */
 913                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 914                         printf("Skipping disabled port %u\n", (unsigned) portid);
 915                         nb_ports_available--;
 916                         continue;
 917                 }
 918                 /* init port */
 919                 printf("Initializing port %u... ", (unsigned) portid);
 920                 fflush(stdout);
 921                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 922                 if (ret < 0)
 923                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 924                                   ret, (unsigned) portid);
 925
 926                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 927
 928                 /* init one RX queue */
 929                 fflush(stdout);
 930                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 931                                              rte_eth_dev_socket_id(portid),
 932                                              NULL,
 933                                              l2fwd_pktmbuf_pool);
 934                 if (ret < 0)
 935                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 936                                   ret, (unsigned) portid);
 937
 938                 /* init one TX queue on each port */
 939                 fflush(stdout);
 940                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 941                                 rte_eth_dev_socket_id(portid),
 942                                 NULL);
 943                 if (ret < 0)
 944                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 945                                 ret, (unsigned) portid);
 946
 947                 /* Start device */
 948                 ret = rte_eth_dev_start(portid);
 949                 if (ret < 0)
 950                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 951                                   ret, (unsigned) portid);
 952
 953                 printf("done:\n");
 954
 955                 rte_eth_promiscuous_enable(portid);
 956
 957                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 958                                 (unsigned) portid,
 959                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 960                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 961                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 962                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 963                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 964                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 965
 966                 /* initialize port stats */
 967                 memset(&port_statistics, 0, sizeof(port_statistics));
 968         }
 969
 970         if (!nb_ports_available) {
 971                 rte_exit(EXIT_FAILURE,
 972                         "All available ports are disabled. Please set portmask.\n");
 973         }
 974
 975         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 976
 977         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 978
 979         RTE_LCORE_FOREACH(lcore_id) {
 980                 qconf = &lcore_queue_conf[lcore_id];
 981
 982                 rte_spinlock_init(&qconf->lock);
 983
 984                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 985                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 986
 987                 if (qconf->n_rx_port == 0) {
 988                         RTE_LOG(INFO, L2FWD,
 989                                 "lcore %u: no ports so no jobs stats context initialization\n",
 990                                 lcore_id);
 991                         continue;
 992                 }
 993                 /* Add flush job.
 994                  * Set fixed period by setting min = max = initial period. Set target to
 995                  * zero as it is irrelevant for this job. */
 996                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 997                                 drain_tsc, 0);
 998
 999                 rte_timer_init(&qconf->flush_timer);
1000                 rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL, lcore_id,
1001                                 &l2fwd_flush_job, NULL);
1002
1003                 if (ret < 0) {
1004                         rte_exit(1, "Failed to add flush job for lcore %u: %s",
1005                                         lcore_id, rte_strerror(-ret));
1006                 }
1007
1008                 for (i = 0; i < qconf->n_rx_port; i++) {
1009                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
1010
1011                         portid = qconf->rx_port_list[i];
1012                         printf("Setting forward jon for port %u\n", portid);
1013
1014                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
1015                         /* Setup forward job.
1016                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
1017                          * this is desired optimal RX/TX burst size. */
1018                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1019                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1020
1021                         rte_timer_init(&qconf->rx_timers[i]);
1022                         rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1023                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1024                 }
1025         }
1026
1027         if (timer_period)
1028                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1029         else
1030                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1031
1032         /* launch per-lcore init on every lcore */
1033         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
1034         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1035                 if (rte_eal_wait_lcore(lcore_id) < 0)
1036                         return -1;
1037         }
1038
1039         return 0;
1040 }