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 MBUF_SIZE (2048 + sizeof(struct rte_mbuf) + RTE_PKTMBUF_HEADROOM)
  74 #define NB_MBUF   8192
  75
  76 #define MAX_PKT_BURST 32
  77 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  78
  79 /*
  80  * Configurable number of RX/TX ring descriptors
  81  */
  82 #define RTE_TEST_RX_DESC_DEFAULT 128
  83 #define RTE_TEST_TX_DESC_DEFAULT 512
  84 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  85 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  86
  87 /* ethernet addresses of ports */
  88 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  89
  90 /* mask of enabled ports */
  91 static uint32_t l2fwd_enabled_port_mask;
  92
  93 /* list of enabled ports */
  94 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  95
  96 #define UPDATE_STEP_UP 1
  97 #define UPDATE_STEP_DOWN 32
  98
  99 static unsigned int l2fwd_rx_queue_per_lcore = 1;
 100
 101 struct mbuf_table {
 102         uint64_t next_flush_time;
 103         unsigned len;
 104         struct rte_mbuf *mbufs[MAX_PKT_BURST];
 105 };
 106
 107 #define MAX_RX_QUEUE_PER_LCORE 16
 108 #define MAX_TX_QUEUE_PER_PORT 16
 109 struct lcore_queue_conf {
 110         unsigned n_rx_port;
 111         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
 112         struct mbuf_table tx_mbufs[RTE_MAX_ETHPORTS];
 113
 114         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
 115         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
 116
 117         struct rte_timer flush_timer;
 118         struct rte_jobstats flush_job;
 119         struct rte_jobstats idle_job;
 120         struct rte_jobstats_context jobs_context;
 121
 122         rte_atomic16_t stats_read_pending;
 123         rte_spinlock_t lock;
 124 } __rte_cache_aligned;
 125 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
 126
 127 static const struct rte_eth_conf port_conf = {
 128         .rxmode = {
 129                 .split_hdr_size = 0,
 130                 .header_split   = 0, /**< Header Split disabled */
 131                 .hw_ip_checksum = 0, /**< IP checksum offload disabled */
 132                 .hw_vlan_filter = 0, /**< VLAN filtering disabled */
 133                 .jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
 134                 .hw_strip_crc   = 0, /**< CRC stripped by hardware */
 135         },
 136         .txmode = {
 137                 .mq_mode = ETH_MQ_TX_NONE,
 138         },
 139 };
 140
 141 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 142
 143 /* Per-port statistics struct */
 144 struct l2fwd_port_statistics {
 145         uint64_t tx;
 146         uint64_t rx;
 147         uint64_t dropped;
 148 } __rte_cache_aligned;
 149 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 150
 151 /* 1 day max */
 152 #define MAX_TIMER_PERIOD 86400
 153 /* default period is 10 seconds */
 154 static int64_t timer_period = 10;
 155 /* default timer frequency */
 156 static double hz;
 157 /* BURST_TX_DRAIN_US converted to cycles */
 158 uint64_t drain_tsc;
 159 /* Convert cycles to ns */
 160 static inline double
 161 cycles_to_ns(uint64_t cycles)
 162 {
 163         double t = cycles;
 164
 165         t *= (double)NS_PER_S;
 166         t /= hz;
 167         return t;
 168 }
 169
 170 static void
 171 show_lcore_stats(unsigned lcore_id)
 172 {
 173         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 174         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 175         struct rte_jobstats *job;
 176         uint8_t i;
 177
 178         /* LCore statistics. */
 179         uint64_t stats_period, loop_count;
 180         uint64_t exec, exec_min, exec_max;
 181         uint64_t management, management_min, management_max;
 182         uint64_t busy, busy_min, busy_max;
 183
 184         /* Jobs statistics. */
 185         const uint8_t port_cnt = qconf->n_rx_port;
 186         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 187         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 188                                 jobs_exec_max[port_cnt];
 189
 190         uint64_t flush_exec_cnt, flush_period;
 191         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 192
 193         uint64_t idle_exec_cnt;
 194         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 195         uint64_t collection_time = rte_get_timer_cycles();
 196
 197         /* Ask forwarding thread to give us stats. */
 198         rte_atomic16_set(&qconf->stats_read_pending, 1);
 199         rte_spinlock_lock(&qconf->lock);
 200         rte_atomic16_set(&qconf->stats_read_pending, 0);
 201
 202         /* Collect context statistics. */
 203         stats_period = ctx->state_time - ctx->start_time;
 204         loop_count = ctx->loop_cnt;
 205
 206         exec = ctx->exec_time;
 207         exec_min = ctx->min_exec_time;
 208         exec_max = ctx->max_exec_time;
 209
 210         management = ctx->management_time;
 211         management_min = ctx->min_management_time;
 212         management_max = ctx->max_management_time;
 213
 214         rte_jobstats_context_reset(ctx);
 215
 216         for (i = 0; i < port_cnt; i++) {
 217                 job = &qconf->port_fwd_jobs[i];
 218
 219                 jobs_exec_cnt[i] = job->exec_cnt;
 220                 jobs_period[i] = job->period;
 221
 222                 jobs_exec[i] = job->exec_time;
 223                 jobs_exec_min[i] = job->min_exec_time;
 224                 jobs_exec_max[i] = job->max_exec_time;
 225
 226                 rte_jobstats_reset(job);
 227         }
 228
 229         flush_exec_cnt = qconf->flush_job.exec_cnt;
 230         flush_period = qconf->flush_job.period;
 231         flush_exec = qconf->flush_job.exec_time;
 232         flush_exec_min = qconf->flush_job.min_exec_time;
 233         flush_exec_max = qconf->flush_job.max_exec_time;
 234         rte_jobstats_reset(&qconf->flush_job);
 235
 236         idle_exec_cnt = qconf->idle_job.exec_cnt;
 237         idle_exec = qconf->idle_job.exec_time;
 238         idle_exec_min = qconf->idle_job.min_exec_time;
 239         idle_exec_max = qconf->idle_job.max_exec_time;
 240         rte_jobstats_reset(&qconf->idle_job);
 241
 242         rte_spinlock_unlock(&qconf->lock);
 243
 244         exec -= idle_exec;
 245         busy = exec + management;
 246         busy_min = exec_min + management_min;
 247         busy_max = exec_max + management_max;
 248
 249
 250         collection_time = rte_get_timer_cycles() - collection_time;
 251
 252 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 253
 254         printf("\n----------------"
 255                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 256                         "\n%-18s %14s %7s %10s %10s %10s "
 257                         "\n%-18s %'14.0f"
 258                         "\n%-18s %'14" PRIu64
 259                         STAT_FMT /* Exec */
 260                         STAT_FMT /* Management */
 261                         STAT_FMT /* Busy */
 262                         STAT_FMT, /* Idle  */
 263                         lcore_id, cycles_to_ns(collection_time),
 264                         "Stat type", "total", "%total", "avg", "min", "max",
 265                         "Stats duration:", cycles_to_ns(stats_period),
 266                         "Loop count:", loop_count,
 267                         "Exec time",
 268                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 269                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 270                         cycles_to_ns(exec_min),
 271                         cycles_to_ns(exec_max),
 272                         "Management time",
 273                         cycles_to_ns(management), management * 100.0 / stats_period,
 274                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 275                         cycles_to_ns(management_min),
 276                         cycles_to_ns(management_max),
 277                         "Exec + management",
 278                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 279                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 280                         cycles_to_ns(busy_min),
 281                         cycles_to_ns(busy_max),
 282                         "Idle (job)",
 283                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 284                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 285                         cycles_to_ns(idle_exec_min),
 286                         cycles_to_ns(idle_exec_max));
 287
 288         for (i = 0; i < qconf->n_rx_port; i++) {
 289                 job = &qconf->port_fwd_jobs[i];
 290                 printf("\n\nJob %" PRIu32 ": %-20s "
 291                                 "\n%-18s %'14" PRIu64
 292                                 "\n%-18s %'14.0f"
 293                                 STAT_FMT,
 294                                 i, job->name,
 295                                 "Exec count:", jobs_exec_cnt[i],
 296                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 297                                 "Exec time",
 298                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 299                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 300                                                 : 0),
 301                                 cycles_to_ns(jobs_exec_min[i]),
 302                                 cycles_to_ns(jobs_exec_max[i]));
 303         }
 304
 305         if (qconf->n_rx_port > 0) {
 306                 job = &qconf->flush_job;
 307                 printf("\n\nJob %" PRIu32 ": %-20s "
 308                                 "\n%-18s %'14" PRIu64
 309                                 "\n%-18s %'14.0f"
 310                                 STAT_FMT,
 311                                 i, job->name,
 312                                 "Exec count:", flush_exec_cnt,
 313                                 "Exec period: ", cycles_to_ns(flush_period),
 314                                 "Exec time",
 315                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 316                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 317                                 cycles_to_ns(flush_exec_min),
 318                                 cycles_to_ns(flush_exec_max));
 319         }
 320 }
 321
 322 /* Print out statistics on packets dropped */
 323 static void
 324 show_stats_cb(__rte_unused void *param)
 325 {
 326         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 327         unsigned portid, lcore_id;
 328
 329         total_packets_dropped = 0;
 330         total_packets_tx = 0;
 331         total_packets_rx = 0;
 332
 333         const char clr[] = { 27, '[', '2', 'J', '\0' };
 334         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 335
 336         /* Clear screen and move to top left */
 337         printf("%s%s"
 338                         "\nPort statistics ===================================",
 339                         clr, topLeft);
 340
 341         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 342                 /* skip disabled ports */
 343                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 344                         continue;
 345                 printf("\nStatistics for port %u ------------------------------"
 346                                 "\nPackets sent: %24"PRIu64
 347                                 "\nPackets received: %20"PRIu64
 348                                 "\nPackets dropped: %21"PRIu64,
 349                                 portid,
 350                                 port_statistics[portid].tx,
 351                                 port_statistics[portid].rx,
 352                                 port_statistics[portid].dropped);
 353
 354                 total_packets_dropped += port_statistics[portid].dropped;
 355                 total_packets_tx += port_statistics[portid].tx;
 356                 total_packets_rx += port_statistics[portid].rx;
 357         }
 358
 359         printf("\nAggregate statistics ==============================="
 360                         "\nTotal packets sent: %18"PRIu64
 361                         "\nTotal packets received: %14"PRIu64
 362                         "\nTotal packets dropped: %15"PRIu64
 363                         "\n====================================================",
 364                         total_packets_tx,
 365                         total_packets_rx,
 366                         total_packets_dropped);
 367
 368         RTE_LCORE_FOREACH(lcore_id) {
 369                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 370                         show_lcore_stats(lcore_id);
 371         }
 372
 373         printf("\n====================================================\n");
 374         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 375 }
 376
 377 /* Send the burst of packets on an output interface */
 378 static void
 379 l2fwd_send_burst(struct lcore_queue_conf *qconf, uint8_t port)
 380 {
 381         struct mbuf_table *m_table;
 382         uint16_t ret;
 383         uint16_t queueid = 0;
 384         uint16_t n;
 385
 386         m_table = &qconf->tx_mbufs[port];
 387         n = m_table->len;
 388
 389         m_table->next_flush_time = rte_get_timer_cycles() + drain_tsc;
 390         m_table->len = 0;
 391
 392         ret = rte_eth_tx_burst(port, queueid, m_table->mbufs, n);
 393
 394         port_statistics[port].tx += ret;
 395         if (unlikely(ret < n)) {
 396                 port_statistics[port].dropped += (n - ret);
 397                 do {
 398                         rte_pktmbuf_free(m_table->mbufs[ret]);
 399                 } while (++ret < n);
 400         }
 401 }
 402
 403 /* Enqueue packets for TX and prepare them to be sent */
 404 static int
 405 l2fwd_send_packet(struct rte_mbuf *m, uint8_t port)
 406 {
 407         const unsigned lcore_id = rte_lcore_id();
 408         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 409         struct mbuf_table *m_table = &qconf->tx_mbufs[port];
 410         uint16_t len = qconf->tx_mbufs[port].len;
 411
 412         m_table->mbufs[len] = m;
 413
 414         len++;
 415         m_table->len = len;
 416
 417         /* Enough pkts to be sent. */
 418         if (unlikely(len == MAX_PKT_BURST))
 419                 l2fwd_send_burst(qconf, port);
 420
 421         return 0;
 422 }
 423
 424 static void
 425 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 426 {
 427         struct ether_hdr *eth;
 428         void *tmp;
 429         unsigned dst_port;
 430
 431         dst_port = l2fwd_dst_ports[portid];
 432         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 433
 434         /* 02:00:00:00:00:xx */
 435         tmp = &eth->d_addr.addr_bytes[0];
 436         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 437
 438         /* src addr */
 439         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 440
 441         l2fwd_send_packet(m, (uint8_t) dst_port);
 442 }
 443
 444 static void
 445 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 446 {
 447         int64_t err = job->target - result;
 448         int64_t histeresis = job->target / 8;
 449
 450         if (err < -histeresis) {
 451                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 452                         job->period -= UPDATE_STEP_DOWN;
 453         } else if (err > histeresis) {
 454                 if (job->period + UPDATE_STEP_UP < job->max_period)
 455                         job->period += UPDATE_STEP_UP;
 456         }
 457 }
 458
 459 static void
 460 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 461 {
 462         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 463         struct rte_mbuf *m;
 464
 465         const uint8_t port_idx = (uintptr_t) arg;
 466         const unsigned lcore_id = rte_lcore_id();
 467         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 468         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 469         const uint8_t portid = qconf->rx_port_list[port_idx];
 470
 471         uint8_t j;
 472         uint16_t total_nb_rx;
 473
 474         rte_jobstats_start(&qconf->jobs_context, job);
 475
 476         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 477          * function must be called more frequently. */
 478
 479         total_nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 480                         MAX_PKT_BURST);
 481
 482         for (j = 0; j < total_nb_rx; j++) {
 483                 m = pkts_burst[j];
 484                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 485                 l2fwd_simple_forward(m, portid);
 486         }
 487
 488         if (total_nb_rx == MAX_PKT_BURST) {
 489                 const uint16_t nb_rx = rte_eth_rx_burst((uint8_t) portid, 0, pkts_burst,
 490                                 MAX_PKT_BURST);
 491
 492                 total_nb_rx += nb_rx;
 493                 for (j = 0; j < nb_rx; j++) {
 494                         m = pkts_burst[j];
 495                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 496                         l2fwd_simple_forward(m, portid);
 497                 }
 498         }
 499
 500         port_statistics[portid].rx += total_nb_rx;
 501
 502         /* Adjust period time in which we are running here. */
 503         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 504                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 505                                 lcore_id, l2fwd_fwd_job, arg);
 506         }
 507 }
 508
 509 static void
 510 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 511 {
 512         uint64_t now;
 513         unsigned lcore_id;
 514         struct lcore_queue_conf *qconf;
 515         struct mbuf_table *m_table;
 516         uint8_t portid;
 517
 518         lcore_id = rte_lcore_id();
 519         qconf = &lcore_queue_conf[lcore_id];
 520
 521         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 522
 523         now = rte_get_timer_cycles();
 524         lcore_id = rte_lcore_id();
 525         qconf = &lcore_queue_conf[lcore_id];
 526         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 527                 m_table = &qconf->tx_mbufs[portid];
 528                 if (m_table->len == 0 || m_table->next_flush_time <= now)
 529                         continue;
 530
 531                 l2fwd_send_burst(qconf, portid);
 532         }
 533
 534
 535         /* Pass target to indicate that this job is happy of time interwal
 536          * in which it was called. */
 537         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 538 }
 539
 540 /* main processing loop */
 541 static void
 542 l2fwd_main_loop(void)
 543 {
 544         unsigned lcore_id;
 545         unsigned i, portid;
 546         struct lcore_queue_conf *qconf;
 547         uint8_t stats_read_pending = 0;
 548         uint8_t need_manage;
 549
 550         lcore_id = rte_lcore_id();
 551         qconf = &lcore_queue_conf[lcore_id];
 552
 553         if (qconf->n_rx_port == 0) {
 554                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 555                 return;
 556         }
 557
 558         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 559
 560         for (i = 0; i < qconf->n_rx_port; i++) {
 561
 562                 portid = qconf->rx_port_list[i];
 563                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 564                         portid);
 565         }
 566
 567         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 568
 569         for (;;) {
 570                 rte_spinlock_lock(&qconf->lock);
 571
 572                 do {
 573                         rte_jobstats_context_start(&qconf->jobs_context);
 574
 575                         /* Do the Idle job:
 576                          * - Read stats_read_pending flag
 577                          * - check if some real job need to be executed
 578                          */
 579                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 580
 581                         do {
 582                                 uint8_t i;
 583                                 uint64_t now = rte_get_timer_cycles();
 584
 585                                 need_manage = qconf->flush_timer.expire < now;
 586                                 /* Check if we was esked to give a stats. */
 587                                 stats_read_pending =
 588                                                 rte_atomic16_read(&qconf->stats_read_pending);
 589                                 need_manage |= stats_read_pending;
 590
 591                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 592                                         need_manage = qconf->rx_timers[i].expire < now;
 593
 594                         } while (!need_manage);
 595                         rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 596
 597                         rte_timer_manage();
 598                         rte_jobstats_context_finish(&qconf->jobs_context);
 599                 } while (likely(stats_read_pending == 0));
 600
 601                 rte_spinlock_unlock(&qconf->lock);
 602                 rte_pause();
 603         }
 604 }
 605
 606 static int
 607 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 608 {
 609         l2fwd_main_loop();
 610         return 0;
 611 }
 612
 613 /* display usage */
 614 static void
 615 l2fwd_usage(const char *prgname)
 616 {
 617         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 618                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 619                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 620                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 621                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 622                prgname);
 623 }
 624
 625 static int
 626 l2fwd_parse_portmask(const char *portmask)
 627 {
 628         char *end = NULL;
 629         unsigned long pm;
 630
 631         /* parse hexadecimal string */
 632         pm = strtoul(portmask, &end, 16);
 633         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 634                 return -1;
 635
 636         if (pm == 0)
 637                 return -1;
 638
 639         return pm;
 640 }
 641
 642 static unsigned int
 643 l2fwd_parse_nqueue(const char *q_arg)
 644 {
 645         char *end = NULL;
 646         unsigned long n;
 647
 648         /* parse hexadecimal string */
 649         n = strtoul(q_arg, &end, 10);
 650         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 651                 return 0;
 652         if (n == 0)
 653                 return 0;
 654         if (n >= MAX_RX_QUEUE_PER_LCORE)
 655                 return 0;
 656
 657         return n;
 658 }
 659
 660 static int
 661 l2fwd_parse_timer_period(const char *q_arg)
 662 {
 663         char *end = NULL;
 664         int n;
 665
 666         /* parse number string */
 667         n = strtol(q_arg, &end, 10);
 668         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 669                 return -1;
 670         if (n >= MAX_TIMER_PERIOD)
 671                 return -1;
 672
 673         return n;
 674 }
 675
 676 /* Parse the argument given in the command line of the application */
 677 static int
 678 l2fwd_parse_args(int argc, char **argv)
 679 {
 680         int opt, ret;
 681         char **argvopt;
 682         int option_index;
 683         char *prgname = argv[0];
 684         static struct option lgopts[] = {
 685                 {NULL, 0, 0, 0}
 686         };
 687
 688         argvopt = argv;
 689
 690         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 691                                   lgopts, &option_index)) != EOF) {
 692
 693                 switch (opt) {
 694                 /* portmask */
 695                 case 'p':
 696                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 697                         if (l2fwd_enabled_port_mask == 0) {
 698                                 printf("invalid portmask\n");
 699                                 l2fwd_usage(prgname);
 700                                 return -1;
 701                         }
 702                         break;
 703
 704                 /* nqueue */
 705                 case 'q':
 706                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 707                         if (l2fwd_rx_queue_per_lcore == 0) {
 708                                 printf("invalid queue number\n");
 709                                 l2fwd_usage(prgname);
 710                                 return -1;
 711                         }
 712                         break;
 713
 714                 /* timer period */
 715                 case 'T':
 716                         timer_period = l2fwd_parse_timer_period(optarg);
 717                         if (timer_period < 0) {
 718                                 printf("invalid timer period\n");
 719                                 l2fwd_usage(prgname);
 720                                 return -1;
 721                         }
 722                         break;
 723
 724                 /* For thousands separator in printf. */
 725                 case 'l':
 726                         setlocale(LC_ALL, "");
 727                         break;
 728
 729                 /* long options */
 730                 case 0:
 731                         l2fwd_usage(prgname);
 732                         return -1;
 733
 734                 default:
 735                         l2fwd_usage(prgname);
 736                         return -1;
 737                 }
 738         }
 739
 740         if (optind >= 0)
 741                 argv[optind-1] = prgname;
 742
 743         ret = optind-1;
 744         optind = 0; /* reset getopt lib */
 745         return ret;
 746 }
 747
 748 /* Check the link status of all ports in up to 9s, and print them finally */
 749 static void
 750 check_all_ports_link_status(uint8_t port_num, uint32_t port_mask)
 751 {
 752 #define CHECK_INTERVAL 100 /* 100ms */
 753 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 754         uint8_t portid, count, all_ports_up, print_flag = 0;
 755         struct rte_eth_link link;
 756
 757         printf("\nChecking link status");
 758         fflush(stdout);
 759         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 760                 all_ports_up = 1;
 761                 for (portid = 0; portid < port_num; portid++) {
 762                         if ((port_mask & (1 << portid)) == 0)
 763                                 continue;
 764                         memset(&link, 0, sizeof(link));
 765                         rte_eth_link_get_nowait(portid, &link);
 766                         /* print link status if flag set */
 767                         if (print_flag == 1) {
 768                                 if (link.link_status)
 769                                         printf("Port %d Link Up - speed %u "
 770                                                 "Mbps - %s\n", (uint8_t)portid,
 771                                                 (unsigned)link.link_speed,
 772                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 773                                         ("full-duplex") : ("half-duplex\n"));
 774                                 else
 775                                         printf("Port %d Link Down\n",
 776                                                 (uint8_t)portid);
 777                                 continue;
 778                         }
 779                         /* clear all_ports_up flag if any link down */
 780                         if (link.link_status == 0) {
 781                                 all_ports_up = 0;
 782                                 break;
 783                         }
 784                 }
 785                 /* after finally printing all link status, get out */
 786                 if (print_flag == 1)
 787                         break;
 788
 789                 if (all_ports_up == 0) {
 790                         printf(".");
 791                         fflush(stdout);
 792                         rte_delay_ms(CHECK_INTERVAL);
 793                 }
 794
 795                 /* set the print_flag if all ports up or timeout */
 796                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 797                         print_flag = 1;
 798                         printf("done\n");
 799                 }
 800         }
 801 }
 802
 803 int
 804 main(int argc, char **argv)
 805 {
 806         struct lcore_queue_conf *qconf;
 807         struct rte_eth_dev_info dev_info;
 808         unsigned lcore_id, rx_lcore_id;
 809         unsigned nb_ports_in_mask = 0;
 810         int ret;
 811         char name[RTE_JOBSTATS_NAMESIZE];
 812         uint8_t nb_ports;
 813         uint8_t nb_ports_available;
 814         uint8_t portid, last_port;
 815         uint8_t i;
 816
 817         /* init EAL */
 818         ret = rte_eal_init(argc, argv);
 819         if (ret < 0)
 820                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 821         argc -= ret;
 822         argv += ret;
 823
 824         /* parse application arguments (after the EAL ones) */
 825         ret = l2fwd_parse_args(argc, argv);
 826         if (ret < 0)
 827                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 828
 829         rte_timer_subsystem_init();
 830
 831         /* fetch default timer frequency. */
 832         hz = rte_get_timer_hz();
 833
 834         /* create the mbuf pool */
 835         l2fwd_pktmbuf_pool =
 836                 rte_mempool_create("mbuf_pool", NB_MBUF,
 837                                    MBUF_SIZE, 32,
 838                                    sizeof(struct rte_pktmbuf_pool_private),
 839                                    rte_pktmbuf_pool_init, NULL,
 840                                    rte_pktmbuf_init, NULL,
 841                                    rte_socket_id(), 0);
 842         if (l2fwd_pktmbuf_pool == NULL)
 843                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 844
 845         nb_ports = rte_eth_dev_count();
 846         if (nb_ports == 0)
 847                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 848
 849         if (nb_ports > RTE_MAX_ETHPORTS)
 850                 nb_ports = RTE_MAX_ETHPORTS;
 851
 852         /* reset l2fwd_dst_ports */
 853         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 854                 l2fwd_dst_ports[portid] = 0;
 855         last_port = 0;
 856
 857         /*
 858          * Each logical core is assigned a dedicated TX queue on each port.
 859          */
 860         for (portid = 0; portid < nb_ports; portid++) {
 861                 /* skip ports that are not enabled */
 862                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 863                         continue;
 864
 865                 if (nb_ports_in_mask % 2) {
 866                         l2fwd_dst_ports[portid] = last_port;
 867                         l2fwd_dst_ports[last_port] = portid;
 868                 } else
 869                         last_port = portid;
 870
 871                 nb_ports_in_mask++;
 872
 873                 rte_eth_dev_info_get(portid, &dev_info);
 874         }
 875         if (nb_ports_in_mask % 2) {
 876                 printf("Notice: odd number of ports in portmask.\n");
 877                 l2fwd_dst_ports[last_port] = last_port;
 878         }
 879
 880         rx_lcore_id = 0;
 881         qconf = NULL;
 882
 883         /* Initialize the port/queue configuration of each logical core */
 884         for (portid = 0; portid < nb_ports; portid++) {
 885                 /* skip ports that are not enabled */
 886                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 887                         continue;
 888
 889                 /* get the lcore_id for this port */
 890                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 891                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 892                        l2fwd_rx_queue_per_lcore) {
 893                         rx_lcore_id++;
 894                         if (rx_lcore_id >= RTE_MAX_LCORE)
 895                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 896                 }
 897
 898                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 899                         /* Assigned a new logical core in the loop above. */
 900                         qconf = &lcore_queue_conf[rx_lcore_id];
 901
 902                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 903                 qconf->n_rx_port++;
 904                 printf("Lcore %u: RX port %u\n", rx_lcore_id, (unsigned) portid);
 905         }
 906
 907         nb_ports_available = nb_ports;
 908
 909         /* Initialise each port */
 910         for (portid = 0; portid < nb_ports; portid++) {
 911                 /* skip ports that are not enabled */
 912                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 913                         printf("Skipping disabled port %u\n", (unsigned) portid);
 914                         nb_ports_available--;
 915                         continue;
 916                 }
 917                 /* init port */
 918                 printf("Initializing port %u... ", (unsigned) portid);
 919                 fflush(stdout);
 920                 ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
 921                 if (ret < 0)
 922                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 923                                   ret, (unsigned) portid);
 924
 925                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 926
 927                 /* init one RX queue */
 928                 fflush(stdout);
 929                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 930                                              rte_eth_dev_socket_id(portid),
 931                                              NULL,
 932                                              l2fwd_pktmbuf_pool);
 933                 if (ret < 0)
 934                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 935                                   ret, (unsigned) portid);
 936
 937                 /* init one TX queue on each port */
 938                 fflush(stdout);
 939                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 940                                 rte_eth_dev_socket_id(portid),
 941                                 NULL);
 942                 if (ret < 0)
 943                         rte_exit(EXIT_FAILURE, "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 944                                 ret, (unsigned) portid);
 945
 946                 /* Start device */
 947                 ret = rte_eth_dev_start(portid);
 948                 if (ret < 0)
 949                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 950                                   ret, (unsigned) portid);
 951
 952                 printf("done:\n");
 953
 954                 rte_eth_promiscuous_enable(portid);
 955
 956                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 957                                 (unsigned) portid,
 958                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 959                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 960                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 961                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 962                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 963                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 964
 965                 /* initialize port stats */
 966                 memset(&port_statistics, 0, sizeof(port_statistics));
 967         }
 968
 969         if (!nb_ports_available) {
 970                 rte_exit(EXIT_FAILURE,
 971                         "All available ports are disabled. Please set portmask.\n");
 972         }
 973
 974         check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);
 975
 976         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 977
 978         RTE_LCORE_FOREACH(lcore_id) {
 979                 qconf = &lcore_queue_conf[lcore_id];
 980
 981                 rte_spinlock_init(&qconf->lock);
 982
 983                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 984                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 985
 986                 if (qconf->n_rx_port == 0) {
 987                         RTE_LOG(INFO, L2FWD,
 988                                 "lcore %u: no ports so no jobs stats context initialization\n",
 989                                 lcore_id);
 990                         continue;
 991                 }
 992                 /* Add flush job.
 993                  * Set fixed period by setting min = max = initial period. Set target to
 994                  * zero as it is irrelevant for this job. */
 995                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 996                                 drain_tsc, 0);
 997
 998                 rte_timer_init(&qconf->flush_timer);
 999                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
1000                                 lcore_id, &l2fwd_flush_job, NULL);
1001
1002                 if (ret < 0) {
1003                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
1004                                         lcore_id, rte_strerror(-ret));
1005                 }
1006
1007                 for (i = 0; i < qconf->n_rx_port; i++) {
1008                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
1009
1010                         portid = qconf->rx_port_list[i];
1011                         printf("Setting forward jon for port %u\n", portid);
1012
1013                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
1014                         /* Setup forward job.
1015                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
1016                          * this is desired optimal RX/TX burst size. */
1017                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
1018                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
1019
1020                         rte_timer_init(&qconf->rx_timers[i]);
1021                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
1022                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
1023
1024                         if (ret < 0) {
1025                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
1026                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
1027                         }
1028                 }
1029         }
1030
1031         if (timer_period)
1032                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
1033         else
1034                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
1035
1036         /* launch per-lcore init on every lcore */
1037         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
1038         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
1039                 if (rte_eal_wait_lcore(lcore_id) < 0)
1040                         return -1;
1041         }
1042
1043         return 0;
1044 }