examples/l2fwd-jobstats/main.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  * Copyright(c) 2010-2016 Intel Corporation
   3  */
   4
   5 #include <locale.h>
   6 #include <stdlib.h>
   7 #include <string.h>
   8 #include <stdint.h>
   9 #include <ctype.h>
  10 #include <getopt.h>
  11
  12 #include <rte_common.h>
  13 #include <rte_log.h>
  14 #include <rte_malloc.h>
  15 #include <rte_memory.h>
  16 #include <rte_memcpy.h>
  17 #include <rte_eal.h>
  18 #include <rte_launch.h>
  19 #include <rte_atomic.h>
  20 #include <rte_cycles.h>
  21 #include <rte_prefetch.h>
  22 #include <rte_lcore.h>
  23 #include <rte_per_lcore.h>
  24 #include <rte_branch_prediction.h>
  25 #include <rte_interrupts.h>
  26 #include <rte_debug.h>
  27 #include <rte_ether.h>
  28 #include <rte_ethdev.h>
  29 #include <rte_mempool.h>
  30 #include <rte_mbuf.h>
  31 #include <rte_spinlock.h>
  32
  33 #include <rte_errno.h>
  34 #include <rte_jobstats.h>
  35 #include <rte_timer.h>
  36 #include <rte_alarm.h>
  37 #include <rte_pause.h>
  38
  39 #define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1
  40
  41 #define NB_MBUF   8192
  42
  43 #define MAX_PKT_BURST 32
  44 #define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */
  45
  46 /*
  47  * Configurable number of RX/TX ring descriptors
  48  */
  49 #define RTE_TEST_RX_DESC_DEFAULT 1024
  50 #define RTE_TEST_TX_DESC_DEFAULT 1024
  51 static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
  52 static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;
  53
  54 /* ethernet addresses of ports */
  55 static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];
  56
  57 /* mask of enabled ports */
  58 static uint32_t l2fwd_enabled_port_mask;
  59
  60 /* list of enabled ports */
  61 static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];
  62
  63 #define UPDATE_STEP_UP 1
  64 #define UPDATE_STEP_DOWN 32
  65
  66 static unsigned int l2fwd_rx_queue_per_lcore = 1;
  67
  68 #define MAX_RX_QUEUE_PER_LCORE 16
  69 #define MAX_TX_QUEUE_PER_PORT 16
  70 struct lcore_queue_conf {
  71         unsigned n_rx_port;
  72         unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
  73         uint64_t next_flush_time[RTE_MAX_ETHPORTS];
  74
  75         struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
  76         struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];
  77
  78         struct rte_timer flush_timer;
  79         struct rte_jobstats flush_job;
  80         struct rte_jobstats idle_job;
  81         struct rte_jobstats_context jobs_context;
  82
  83         rte_atomic16_t stats_read_pending;
  84         rte_spinlock_t lock;
  85 } __rte_cache_aligned;
  86 struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];
  87
  88 struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];
  89
  90 static struct rte_eth_conf port_conf = {
  91         .rxmode = {
  92                 .split_hdr_size = 0,
  93                 .offloads = DEV_RX_OFFLOAD_CRC_STRIP,
  94         },
  95         .txmode = {
  96                 .mq_mode = ETH_MQ_TX_NONE,
  97         },
  98 };
  99
 100 struct rte_mempool *l2fwd_pktmbuf_pool = NULL;
 101
 102 /* Per-port statistics struct */
 103 struct l2fwd_port_statistics {
 104         uint64_t tx;
 105         uint64_t rx;
 106         uint64_t dropped;
 107 } __rte_cache_aligned;
 108 struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];
 109
 110 /* 1 day max */
 111 #define MAX_TIMER_PERIOD 86400
 112 /* default period is 10 seconds */
 113 static int64_t timer_period = 10;
 114 /* default timer frequency */
 115 static double hz;
 116 /* BURST_TX_DRAIN_US converted to cycles */
 117 uint64_t drain_tsc;
 118 /* Convert cycles to ns */
 119 static inline double
 120 cycles_to_ns(uint64_t cycles)
 121 {
 122         double t = cycles;
 123
 124         t *= (double)NS_PER_S;
 125         t /= hz;
 126         return t;
 127 }
 128
 129 static void
 130 show_lcore_stats(unsigned lcore_id)
 131 {
 132         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 133         struct rte_jobstats_context *ctx = &qconf->jobs_context;
 134         struct rte_jobstats *job;
 135         uint8_t i;
 136
 137         /* LCore statistics. */
 138         uint64_t stats_period, loop_count;
 139         uint64_t exec, exec_min, exec_max;
 140         uint64_t management, management_min, management_max;
 141         uint64_t busy, busy_min, busy_max;
 142
 143         /* Jobs statistics. */
 144         const uint16_t port_cnt = qconf->n_rx_port;
 145         uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
 146         uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
 147                                 jobs_exec_max[port_cnt];
 148
 149         uint64_t flush_exec_cnt, flush_period;
 150         uint64_t flush_exec, flush_exec_min, flush_exec_max;
 151
 152         uint64_t idle_exec_cnt;
 153         uint64_t idle_exec, idle_exec_min, idle_exec_max;
 154         uint64_t collection_time = rte_get_timer_cycles();
 155
 156         /* Ask forwarding thread to give us stats. */
 157         rte_atomic16_set(&qconf->stats_read_pending, 1);
 158         rte_spinlock_lock(&qconf->lock);
 159         rte_atomic16_set(&qconf->stats_read_pending, 0);
 160
 161         /* Collect context statistics. */
 162         stats_period = ctx->state_time - ctx->start_time;
 163         loop_count = ctx->loop_cnt;
 164
 165         exec = ctx->exec_time;
 166         exec_min = ctx->min_exec_time;
 167         exec_max = ctx->max_exec_time;
 168
 169         management = ctx->management_time;
 170         management_min = ctx->min_management_time;
 171         management_max = ctx->max_management_time;
 172
 173         rte_jobstats_context_reset(ctx);
 174
 175         for (i = 0; i < port_cnt; i++) {
 176                 job = &qconf->port_fwd_jobs[i];
 177
 178                 jobs_exec_cnt[i] = job->exec_cnt;
 179                 jobs_period[i] = job->period;
 180
 181                 jobs_exec[i] = job->exec_time;
 182                 jobs_exec_min[i] = job->min_exec_time;
 183                 jobs_exec_max[i] = job->max_exec_time;
 184
 185                 rte_jobstats_reset(job);
 186         }
 187
 188         flush_exec_cnt = qconf->flush_job.exec_cnt;
 189         flush_period = qconf->flush_job.period;
 190         flush_exec = qconf->flush_job.exec_time;
 191         flush_exec_min = qconf->flush_job.min_exec_time;
 192         flush_exec_max = qconf->flush_job.max_exec_time;
 193         rte_jobstats_reset(&qconf->flush_job);
 194
 195         idle_exec_cnt = qconf->idle_job.exec_cnt;
 196         idle_exec = qconf->idle_job.exec_time;
 197         idle_exec_min = qconf->idle_job.min_exec_time;
 198         idle_exec_max = qconf->idle_job.max_exec_time;
 199         rte_jobstats_reset(&qconf->idle_job);
 200
 201         rte_spinlock_unlock(&qconf->lock);
 202
 203         exec -= idle_exec;
 204         busy = exec + management;
 205         busy_min = exec_min + management_min;
 206         busy_max = exec_max + management_max;
 207
 208
 209         collection_time = rte_get_timer_cycles() - collection_time;
 210
 211 #define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"
 212
 213         printf("\n----------------"
 214                         "\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
 215                         "\n%-18s %14s %7s %10s %10s %10s "
 216                         "\n%-18s %'14.0f"
 217                         "\n%-18s %'14" PRIu64
 218                         STAT_FMT /* Exec */
 219                         STAT_FMT /* Management */
 220                         STAT_FMT /* Busy */
 221                         STAT_FMT, /* Idle  */
 222                         lcore_id, cycles_to_ns(collection_time),
 223                         "Stat type", "total", "%total", "avg", "min", "max",
 224                         "Stats duration:", cycles_to_ns(stats_period),
 225                         "Loop count:", loop_count,
 226                         "Exec time",
 227                         cycles_to_ns(exec), exec * 100.0 / stats_period,
 228                         cycles_to_ns(loop_count  ? exec / loop_count : 0),
 229                         cycles_to_ns(exec_min),
 230                         cycles_to_ns(exec_max),
 231                         "Management time",
 232                         cycles_to_ns(management), management * 100.0 / stats_period,
 233                         cycles_to_ns(loop_count  ? management / loop_count : 0),
 234                         cycles_to_ns(management_min),
 235                         cycles_to_ns(management_max),
 236                         "Exec + management",
 237                         cycles_to_ns(busy),  busy * 100.0 / stats_period,
 238                         cycles_to_ns(loop_count ? busy / loop_count : 0),
 239                         cycles_to_ns(busy_min),
 240                         cycles_to_ns(busy_max),
 241                         "Idle (job)",
 242                         cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
 243                         cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
 244                         cycles_to_ns(idle_exec_min),
 245                         cycles_to_ns(idle_exec_max));
 246
 247         for (i = 0; i < qconf->n_rx_port; i++) {
 248                 job = &qconf->port_fwd_jobs[i];
 249                 printf("\n\nJob %" PRIu32 ": %-20s "
 250                                 "\n%-18s %'14" PRIu64
 251                                 "\n%-18s %'14.0f"
 252                                 STAT_FMT,
 253                                 i, job->name,
 254                                 "Exec count:", jobs_exec_cnt[i],
 255                                 "Exec period: ", cycles_to_ns(jobs_period[i]),
 256                                 "Exec time",
 257                                 cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
 258                                 cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
 259                                                 : 0),
 260                                 cycles_to_ns(jobs_exec_min[i]),
 261                                 cycles_to_ns(jobs_exec_max[i]));
 262         }
 263
 264         if (qconf->n_rx_port > 0) {
 265                 job = &qconf->flush_job;
 266                 printf("\n\nJob %" PRIu32 ": %-20s "
 267                                 "\n%-18s %'14" PRIu64
 268                                 "\n%-18s %'14.0f"
 269                                 STAT_FMT,
 270                                 i, job->name,
 271                                 "Exec count:", flush_exec_cnt,
 272                                 "Exec period: ", cycles_to_ns(flush_period),
 273                                 "Exec time",
 274                                 cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
 275                                 cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
 276                                 cycles_to_ns(flush_exec_min),
 277                                 cycles_to_ns(flush_exec_max));
 278         }
 279 }
 280
 281 /* Print out statistics on packets dropped */
 282 static void
 283 show_stats_cb(__rte_unused void *param)
 284 {
 285         uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
 286         unsigned portid, lcore_id;
 287
 288         total_packets_dropped = 0;
 289         total_packets_tx = 0;
 290         total_packets_rx = 0;
 291
 292         const char clr[] = { 27, '[', '2', 'J', '\0' };
 293         const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };
 294
 295         /* Clear screen and move to top left */
 296         printf("%s%s"
 297                         "\nPort statistics ===================================",
 298                         clr, topLeft);
 299
 300         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
 301                 /* skip disabled ports */
 302                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 303                         continue;
 304                 printf("\nStatistics for port %u ------------------------------"
 305                                 "\nPackets sent: %24"PRIu64
 306                                 "\nPackets received: %20"PRIu64
 307                                 "\nPackets dropped: %21"PRIu64,
 308                                 portid,
 309                                 port_statistics[portid].tx,
 310                                 port_statistics[portid].rx,
 311                                 port_statistics[portid].dropped);
 312
 313                 total_packets_dropped += port_statistics[portid].dropped;
 314                 total_packets_tx += port_statistics[portid].tx;
 315                 total_packets_rx += port_statistics[portid].rx;
 316         }
 317
 318         printf("\nAggregate statistics ==============================="
 319                         "\nTotal packets sent: %18"PRIu64
 320                         "\nTotal packets received: %14"PRIu64
 321                         "\nTotal packets dropped: %15"PRIu64
 322                         "\n====================================================",
 323                         total_packets_tx,
 324                         total_packets_rx,
 325                         total_packets_dropped);
 326
 327         RTE_LCORE_FOREACH(lcore_id) {
 328                 if (lcore_queue_conf[lcore_id].n_rx_port > 0)
 329                         show_lcore_stats(lcore_id);
 330         }
 331
 332         printf("\n====================================================\n");
 333         rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
 334 }
 335
 336 static void
 337 l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
 338 {
 339         struct ether_hdr *eth;
 340         void *tmp;
 341         int sent;
 342         unsigned dst_port;
 343         struct rte_eth_dev_tx_buffer *buffer;
 344
 345         dst_port = l2fwd_dst_ports[portid];
 346         eth = rte_pktmbuf_mtod(m, struct ether_hdr *);
 347
 348         /* 02:00:00:00:00:xx */
 349         tmp = &eth->d_addr.addr_bytes[0];
 350         *((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);
 351
 352         /* src addr */
 353         ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);
 354
 355         buffer = tx_buffer[dst_port];
 356         sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
 357         if (sent)
 358                 port_statistics[dst_port].tx += sent;
 359 }
 360
 361 static void
 362 l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
 363 {
 364         int64_t err = job->target - result;
 365         int64_t histeresis = job->target / 8;
 366
 367         if (err < -histeresis) {
 368                 if (job->min_period + UPDATE_STEP_DOWN < job->period)
 369                         job->period -= UPDATE_STEP_DOWN;
 370         } else if (err > histeresis) {
 371                 if (job->period + UPDATE_STEP_UP < job->max_period)
 372                         job->period += UPDATE_STEP_UP;
 373         }
 374 }
 375
 376 static void
 377 l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
 378 {
 379         struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
 380         struct rte_mbuf *m;
 381
 382         const uint16_t port_idx = (uintptr_t) arg;
 383         const unsigned lcore_id = rte_lcore_id();
 384         struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
 385         struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
 386         const uint16_t portid = qconf->rx_port_list[port_idx];
 387
 388         uint8_t j;
 389         uint16_t total_nb_rx;
 390
 391         rte_jobstats_start(&qconf->jobs_context, job);
 392
 393         /* Call rx burst 2 times. This allow rte_jobstats logic to see if this
 394          * function must be called more frequently. */
 395
 396         total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 397                         MAX_PKT_BURST);
 398
 399         for (j = 0; j < total_nb_rx; j++) {
 400                 m = pkts_burst[j];
 401                 rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 402                 l2fwd_simple_forward(m, portid);
 403         }
 404
 405         if (total_nb_rx == MAX_PKT_BURST) {
 406                 const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
 407                                 MAX_PKT_BURST);
 408
 409                 total_nb_rx += nb_rx;
 410                 for (j = 0; j < nb_rx; j++) {
 411                         m = pkts_burst[j];
 412                         rte_prefetch0(rte_pktmbuf_mtod(m, void *));
 413                         l2fwd_simple_forward(m, portid);
 414                 }
 415         }
 416
 417         port_statistics[portid].rx += total_nb_rx;
 418
 419         /* Adjust period time in which we are running here. */
 420         if (rte_jobstats_finish(job, total_nb_rx) != 0) {
 421                 rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
 422                                 lcore_id, l2fwd_fwd_job, arg);
 423         }
 424 }
 425
 426 static void
 427 l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
 428 {
 429         uint64_t now;
 430         unsigned lcore_id;
 431         struct lcore_queue_conf *qconf;
 432         uint16_t portid;
 433         unsigned i;
 434         uint32_t sent;
 435         struct rte_eth_dev_tx_buffer *buffer;
 436
 437         lcore_id = rte_lcore_id();
 438         qconf = &lcore_queue_conf[lcore_id];
 439
 440         rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);
 441
 442         now = rte_get_timer_cycles();
 443         lcore_id = rte_lcore_id();
 444         qconf = &lcore_queue_conf[lcore_id];
 445
 446         for (i = 0; i < qconf->n_rx_port; i++) {
 447                 portid = l2fwd_dst_ports[qconf->rx_port_list[i]];
 448
 449                 if (qconf->next_flush_time[portid] <= now)
 450                         continue;
 451
 452                 buffer = tx_buffer[portid];
 453                 sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
 454                 if (sent)
 455                         port_statistics[portid].tx += sent;
 456
 457                 qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
 458         }
 459
 460         /* Pass target to indicate that this job is happy of time interwal
 461          * in which it was called. */
 462         rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
 463 }
 464
 465 /* main processing loop */
 466 static void
 467 l2fwd_main_loop(void)
 468 {
 469         unsigned lcore_id;
 470         unsigned i, portid;
 471         struct lcore_queue_conf *qconf;
 472         uint8_t stats_read_pending = 0;
 473         uint8_t need_manage;
 474
 475         lcore_id = rte_lcore_id();
 476         qconf = &lcore_queue_conf[lcore_id];
 477
 478         if (qconf->n_rx_port == 0) {
 479                 RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
 480                 return;
 481         }
 482
 483         RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);
 484
 485         for (i = 0; i < qconf->n_rx_port; i++) {
 486
 487                 portid = qconf->rx_port_list[i];
 488                 RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
 489                         portid);
 490         }
 491
 492         rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);
 493
 494         for (;;) {
 495                 rte_spinlock_lock(&qconf->lock);
 496
 497                 do {
 498                         rte_jobstats_context_start(&qconf->jobs_context);
 499
 500                         /* Do the Idle job:
 501                          * - Read stats_read_pending flag
 502                          * - check if some real job need to be executed
 503                          */
 504                         rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);
 505
 506                         uint64_t repeats = 0;
 507
 508                         do {
 509                                 uint8_t i;
 510                                 uint64_t now = rte_get_timer_cycles();
 511
 512                                 repeats++;
 513                                 need_manage = qconf->flush_timer.expire < now;
 514                                 /* Check if we was esked to give a stats. */
 515                                 stats_read_pending =
 516                                                 rte_atomic16_read(&qconf->stats_read_pending);
 517                                 need_manage |= stats_read_pending;
 518
 519                                 for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
 520                                         need_manage = qconf->rx_timers[i].expire < now;
 521
 522                         } while (!need_manage);
 523
 524                         if (likely(repeats != 1))
 525                                 rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
 526                         else
 527                                 rte_jobstats_abort(&qconf->idle_job);
 528
 529                         rte_timer_manage();
 530                         rte_jobstats_context_finish(&qconf->jobs_context);
 531                 } while (likely(stats_read_pending == 0));
 532
 533                 rte_spinlock_unlock(&qconf->lock);
 534                 rte_pause();
 535         }
 536 }
 537
 538 static int
 539 l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
 540 {
 541         l2fwd_main_loop();
 542         return 0;
 543 }
 544
 545 /* display usage */
 546 static void
 547 l2fwd_usage(const char *prgname)
 548 {
 549         printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
 550                "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
 551                "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
 552                    "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
 553                    "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
 554                prgname);
 555 }
 556
 557 static int
 558 l2fwd_parse_portmask(const char *portmask)
 559 {
 560         char *end = NULL;
 561         unsigned long pm;
 562
 563         /* parse hexadecimal string */
 564         pm = strtoul(portmask, &end, 16);
 565         if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
 566                 return -1;
 567
 568         if (pm == 0)
 569                 return -1;
 570
 571         return pm;
 572 }
 573
 574 static unsigned int
 575 l2fwd_parse_nqueue(const char *q_arg)
 576 {
 577         char *end = NULL;
 578         unsigned long n;
 579
 580         /* parse hexadecimal string */
 581         n = strtoul(q_arg, &end, 10);
 582         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 583                 return 0;
 584         if (n == 0)
 585                 return 0;
 586         if (n >= MAX_RX_QUEUE_PER_LCORE)
 587                 return 0;
 588
 589         return n;
 590 }
 591
 592 static int
 593 l2fwd_parse_timer_period(const char *q_arg)
 594 {
 595         char *end = NULL;
 596         int n;
 597
 598         /* parse number string */
 599         n = strtol(q_arg, &end, 10);
 600         if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
 601                 return -1;
 602         if (n >= MAX_TIMER_PERIOD)
 603                 return -1;
 604
 605         return n;
 606 }
 607
 608 /* Parse the argument given in the command line of the application */
 609 static int
 610 l2fwd_parse_args(int argc, char **argv)
 611 {
 612         int opt, ret;
 613         char **argvopt;
 614         int option_index;
 615         char *prgname = argv[0];
 616         static struct option lgopts[] = {
 617                 {NULL, 0, 0, 0}
 618         };
 619
 620         argvopt = argv;
 621
 622         while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
 623                                   lgopts, &option_index)) != EOF) {
 624
 625                 switch (opt) {
 626                 /* portmask */
 627                 case 'p':
 628                         l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
 629                         if (l2fwd_enabled_port_mask == 0) {
 630                                 printf("invalid portmask\n");
 631                                 l2fwd_usage(prgname);
 632                                 return -1;
 633                         }
 634                         break;
 635
 636                 /* nqueue */
 637                 case 'q':
 638                         l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
 639                         if (l2fwd_rx_queue_per_lcore == 0) {
 640                                 printf("invalid queue number\n");
 641                                 l2fwd_usage(prgname);
 642                                 return -1;
 643                         }
 644                         break;
 645
 646                 /* timer period */
 647                 case 'T':
 648                         timer_period = l2fwd_parse_timer_period(optarg);
 649                         if (timer_period < 0) {
 650                                 printf("invalid timer period\n");
 651                                 l2fwd_usage(prgname);
 652                                 return -1;
 653                         }
 654                         break;
 655
 656                 /* For thousands separator in printf. */
 657                 case 'l':
 658                         setlocale(LC_ALL, "");
 659                         break;
 660
 661                 /* long options */
 662                 case 0:
 663                         l2fwd_usage(prgname);
 664                         return -1;
 665
 666                 default:
 667                         l2fwd_usage(prgname);
 668                         return -1;
 669                 }
 670         }
 671
 672         if (optind >= 0)
 673                 argv[optind-1] = prgname;
 674
 675         ret = optind-1;
 676         optind = 1; /* reset getopt lib */
 677         return ret;
 678 }
 679
 680 /* Check the link status of all ports in up to 9s, and print them finally */
 681 static void
 682 check_all_ports_link_status(uint32_t port_mask)
 683 {
 684 #define CHECK_INTERVAL 100 /* 100ms */
 685 #define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
 686         uint16_t portid;
 687         uint8_t count, all_ports_up, print_flag = 0;
 688         struct rte_eth_link link;
 689
 690         printf("\nChecking link status");
 691         fflush(stdout);
 692         for (count = 0; count <= MAX_CHECK_TIME; count++) {
 693                 all_ports_up = 1;
 694                 RTE_ETH_FOREACH_DEV(portid) {
 695                         if ((port_mask & (1 << portid)) == 0)
 696                                 continue;
 697                         memset(&link, 0, sizeof(link));
 698                         rte_eth_link_get_nowait(portid, &link);
 699                         /* print link status if flag set */
 700                         if (print_flag == 1) {
 701                                 if (link.link_status)
 702                                         printf(
 703                                         "Port%d Link Up. Speed %u Mbps - %s\n",
 704                                                 portid, link.link_speed,
 705                                 (link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
 706                                         ("full-duplex") : ("half-duplex\n"));
 707                                 else
 708                                         printf("Port %d Link Down\n", portid);
 709                                 continue;
 710                         }
 711                         /* clear all_ports_up flag if any link down */
 712                         if (link.link_status == ETH_LINK_DOWN) {
 713                                 all_ports_up = 0;
 714                                 break;
 715                         }
 716                 }
 717                 /* after finally printing all link status, get out */
 718                 if (print_flag == 1)
 719                         break;
 720
 721                 if (all_ports_up == 0) {
 722                         printf(".");
 723                         fflush(stdout);
 724                         rte_delay_ms(CHECK_INTERVAL);
 725                 }
 726
 727                 /* set the print_flag if all ports up or timeout */
 728                 if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
 729                         print_flag = 1;
 730                         printf("done\n");
 731                 }
 732         }
 733 }
 734
 735 int
 736 main(int argc, char **argv)
 737 {
 738         struct lcore_queue_conf *qconf;
 739         unsigned lcore_id, rx_lcore_id;
 740         unsigned nb_ports_in_mask = 0;
 741         int ret;
 742         char name[RTE_JOBSTATS_NAMESIZE];
 743         uint16_t nb_ports;
 744         uint16_t nb_ports_available = 0;
 745         uint16_t portid, last_port;
 746         uint8_t i;
 747
 748         /* init EAL */
 749         ret = rte_eal_init(argc, argv);
 750         if (ret < 0)
 751                 rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
 752         argc -= ret;
 753         argv += ret;
 754
 755         /* parse application arguments (after the EAL ones) */
 756         ret = l2fwd_parse_args(argc, argv);
 757         if (ret < 0)
 758                 rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");
 759
 760         rte_timer_subsystem_init();
 761
 762         /* fetch default timer frequency. */
 763         hz = rte_get_timer_hz();
 764
 765         /* create the mbuf pool */
 766         l2fwd_pktmbuf_pool =
 767                 rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
 768                         0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
 769         if (l2fwd_pktmbuf_pool == NULL)
 770                 rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");
 771
 772         nb_ports = rte_eth_dev_count_avail();
 773         if (nb_ports == 0)
 774                 rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");
 775
 776         /* reset l2fwd_dst_ports */
 777         for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
 778                 l2fwd_dst_ports[portid] = 0;
 779         last_port = 0;
 780
 781         /*
 782          * Each logical core is assigned a dedicated TX queue on each port.
 783          */
 784         RTE_ETH_FOREACH_DEV(portid) {
 785                 /* skip ports that are not enabled */
 786                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 787                         continue;
 788
 789                 if (nb_ports_in_mask % 2) {
 790                         l2fwd_dst_ports[portid] = last_port;
 791                         l2fwd_dst_ports[last_port] = portid;
 792                 } else
 793                         last_port = portid;
 794
 795                 nb_ports_in_mask++;
 796         }
 797         if (nb_ports_in_mask % 2) {
 798                 printf("Notice: odd number of ports in portmask.\n");
 799                 l2fwd_dst_ports[last_port] = last_port;
 800         }
 801
 802         rx_lcore_id = 0;
 803         qconf = NULL;
 804
 805         /* Initialize the port/queue configuration of each logical core */
 806         RTE_ETH_FOREACH_DEV(portid) {
 807                 /* skip ports that are not enabled */
 808                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
 809                         continue;
 810
 811                 /* get the lcore_id for this port */
 812                 while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
 813                        lcore_queue_conf[rx_lcore_id].n_rx_port ==
 814                        l2fwd_rx_queue_per_lcore) {
 815                         rx_lcore_id++;
 816                         if (rx_lcore_id >= RTE_MAX_LCORE)
 817                                 rte_exit(EXIT_FAILURE, "Not enough cores\n");
 818                 }
 819
 820                 if (qconf != &lcore_queue_conf[rx_lcore_id])
 821                         /* Assigned a new logical core in the loop above. */
 822                         qconf = &lcore_queue_conf[rx_lcore_id];
 823
 824                 qconf->rx_port_list[qconf->n_rx_port] = portid;
 825                 qconf->n_rx_port++;
 826                 printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
 827         }
 828
 829         /* Initialise each port */
 830         RTE_ETH_FOREACH_DEV(portid) {
 831                 struct rte_eth_dev_info dev_info;
 832                 struct rte_eth_rxconf rxq_conf;
 833                 struct rte_eth_txconf txq_conf;
 834                 struct rte_eth_conf local_port_conf = port_conf;
 835
 836                 /* skip ports that are not enabled */
 837                 if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
 838                         printf("Skipping disabled port %u\n", portid);
 839                         continue;
 840                 }
 841                 nb_ports_available++;
 842
 843                 /* init port */
 844                 printf("Initializing port %u... ", portid);
 845                 fflush(stdout);
 846                 rte_eth_dev_info_get(portid, &dev_info);
 847                 if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
 848                         local_port_conf.txmode.offloads |=
 849                                 DEV_TX_OFFLOAD_MBUF_FAST_FREE;
 850                 ret = rte_eth_dev_configure(portid, 1, 1, &local_port_conf);
 851                 if (ret < 0)
 852                         rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
 853                                   ret, portid);
 854
 855                 ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
 856                                                        &nb_txd);
 857                 if (ret < 0)
 858                         rte_exit(EXIT_FAILURE,
 859                                  "Cannot adjust number of descriptors: err=%d, port=%u\n",
 860                                  ret, portid);
 861
 862                 rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);
 863
 864                 /* init one RX queue */
 865                 fflush(stdout);
 866                 rxq_conf = dev_info.default_rxconf;
 867                 rxq_conf.offloads = local_port_conf.rxmode.offloads;
 868                 ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
 869                                              rte_eth_dev_socket_id(portid),
 870                                              &rxq_conf,
 871                                              l2fwd_pktmbuf_pool);
 872                 if (ret < 0)
 873                         rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
 874                                   ret, portid);
 875
 876                 /* init one TX queue on each port */
 877                 txq_conf = dev_info.default_txconf;
 878                 txq_conf.offloads = local_port_conf.txmode.offloads;
 879                 fflush(stdout);
 880                 ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
 881                                 rte_eth_dev_socket_id(portid),
 882                                 &txq_conf);
 883                 if (ret < 0)
 884                         rte_exit(EXIT_FAILURE,
 885                         "rte_eth_tx_queue_setup:err=%d, port=%u\n",
 886                                 ret, portid);
 887
 888                 /* Initialize TX buffers */
 889                 tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
 890                                 RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
 891                                 rte_eth_dev_socket_id(portid));
 892                 if (tx_buffer[portid] == NULL)
 893                         rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
 894                                         portid);
 895
 896                 rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);
 897
 898                 ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
 899                                 rte_eth_tx_buffer_count_callback,
 900                                 &port_statistics[portid].dropped);
 901                 if (ret < 0)
 902                         rte_exit(EXIT_FAILURE,
 903                         "Cannot set error callback for tx buffer on port %u\n",
 904                                  portid);
 905
 906                 /* Start device */
 907                 ret = rte_eth_dev_start(portid);
 908                 if (ret < 0)
 909                         rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
 910                                   ret, portid);
 911
 912                 printf("done:\n");
 913
 914                 rte_eth_promiscuous_enable(portid);
 915
 916                 printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
 917                                 portid,
 918                                 l2fwd_ports_eth_addr[portid].addr_bytes[0],
 919                                 l2fwd_ports_eth_addr[portid].addr_bytes[1],
 920                                 l2fwd_ports_eth_addr[portid].addr_bytes[2],
 921                                 l2fwd_ports_eth_addr[portid].addr_bytes[3],
 922                                 l2fwd_ports_eth_addr[portid].addr_bytes[4],
 923                                 l2fwd_ports_eth_addr[portid].addr_bytes[5]);
 924
 925                 /* initialize port stats */
 926                 memset(&port_statistics, 0, sizeof(port_statistics));
 927         }
 928
 929         if (!nb_ports_available) {
 930                 rte_exit(EXIT_FAILURE,
 931                         "All available ports are disabled. Please set portmask.\n");
 932         }
 933
 934         check_all_ports_link_status(l2fwd_enabled_port_mask);
 935
 936         drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;
 937
 938         RTE_LCORE_FOREACH(lcore_id) {
 939                 qconf = &lcore_queue_conf[lcore_id];
 940
 941                 rte_spinlock_init(&qconf->lock);
 942
 943                 if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
 944                         rte_panic("Jobs stats context for core %u init failed\n", lcore_id);
 945
 946                 if (qconf->n_rx_port == 0) {
 947                         RTE_LOG(INFO, L2FWD,
 948                                 "lcore %u: no ports so no jobs stats context initialization\n",
 949                                 lcore_id);
 950                         continue;
 951                 }
 952                 /* Add flush job.
 953                  * Set fixed period by setting min = max = initial period. Set target to
 954                  * zero as it is irrelevant for this job. */
 955                 rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
 956                                 drain_tsc, 0);
 957
 958                 rte_timer_init(&qconf->flush_timer);
 959                 ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
 960                                 lcore_id, &l2fwd_flush_job, NULL);
 961
 962                 if (ret < 0) {
 963                         rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
 964                                         lcore_id, rte_strerror(-ret));
 965                 }
 966
 967                 for (i = 0; i < qconf->n_rx_port; i++) {
 968                         struct rte_jobstats *job = &qconf->port_fwd_jobs[i];
 969
 970                         portid = qconf->rx_port_list[i];
 971                         printf("Setting forward job for port %u\n", portid);
 972
 973                         snprintf(name, RTE_DIM(name), "port %u fwd", portid);
 974                         /* Setup forward job.
 975                          * Set min, max and initial period. Set target to MAX_PKT_BURST as
 976                          * this is desired optimal RX/TX burst size. */
 977                         rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
 978                         rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);
 979
 980                         rte_timer_init(&qconf->rx_timers[i]);
 981                         ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
 982                                         &l2fwd_fwd_job, (void *)(uintptr_t)i);
 983
 984                         if (ret < 0) {
 985                                 rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
 986                                                 lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
 987                         }
 988                 }
 989         }
 990
 991         if (timer_period)
 992                 rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
 993         else
 994                 RTE_LOG(INFO, L2FWD, "Stats display disabled\n");
 995
 996         /* launch per-lcore init on every lcore */
 997         rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
 998         RTE_LCORE_FOREACH_SLAVE(lcore_id) {
 999                 if (rte_eal_wait_lcore(lcore_id) < 0)
1000                         return -1;
1001         }
1002
1003         return 0;
1004 }