DPDK logo

Elixir Cross Referencer

   1
   2
   3
   4
   5
   6
   7
   8
   9
  10
  11
  12
  13
  14
  15
  16
  17
  18
  19
  20
  21
  22
  23
  24
  25
  26
  27
  28
  29
  30
  31
  32
  33
  34
  35
  36
  37
  38
  39
  40
  41
  42
  43
  44
  45
  46
  47
  48
  49
  50
  51
  52
  53
  54
  55
  56
  57
  58
  59
  60
  61
  62
  63
  64
  65
  66
  67
  68
  69
  70
  71
  72
  73
  74
  75
  76
  77
  78
  79
  80
  81
  82
  83
  84
  85
  86
  87
  88
  89
  90
  91
  92
  93
  94
  95
  96
  97
  98
  99
 100
 101
 102
 103
 104
 105
 106
 107
 108
 109
 110
 111
 112
 113
 114
 115
 116
 117
 118
 119
 120
 121
 122
 123
 124
 125
 126
 127
 128
 129
 130
 131
 132
 133
 134
 135
 136
 137
 138
 139
 140
 141
 142
 143
 144
 145
 146
 147
 148
 149
 150
 151
 152
 153
 154
 155
 156
 157
 158
 159
 160
 161
 162
 163
 164
 165
 166
 167
 168
 169
 170
 171
 172
 173
 174
 175
 176
 177
 178
 179
 180
 181
 182
 183
 184
 185
 186
 187
 188
 189
 190
 191
 192
 193
 194
 195
 196
 197
 198
 199
 200
 201
 202
 203
 204
 205
 206
 207
 208
 209
 210
 211
 212
 213
 214
 215
 216
 217
 218
 219
 220
 221
 222
 223
 224
 225
 226
 227
 228
 229
 230
 231
 232
 233
 234
 235
 236
 237
 238
 239
 240
 241
 242
 243
 244
 245
 246
 247
 248
 249
 250
 251
 252
 253
 254
 255
 256
 257
 258
 259
 260
 261
 262
 263
 264
 265
 266
 267
 268
 269
 270
 271
 272
 273
 274
 275
 276
 277
 278
 279
 280
 281
 282
 283
 284
 285
 286
 287
 288
 289
 290
 291
 292
 293
 294
 295
 296
 297
 298
 299
 300
 301
 302
 303
 304
 305
 306
 307
 308
 309
 310
 311
 312
 313
 314
 315
 316
 317
 318
 319
 320
 321
 322
 323
 324
 325
 326
 327
 328
 329
 330
 331
 332
 333
 334
 335
 336
 337
 338
 339
 340
 341
 342
 343
 344
 345
 346
 347
 348
 349
 350
 351
 352
 353
 354
 355
 356
 357
 358
 359
 360
 361
 362
 363
 364
 365
 366
 367
 368
 369
 370
 371
 372
 373
 374
 375
 376
 377
 378
 379
 380
 381
 382
 383
 384
 385
 386
 387
 388
 389
 390
 391
 392
 393
 394
 395
 396
 397
 398
 399
 400
 401
 402
 403
 404
 405
 406
 407
 408
 409
 410
 411
 412
 413
 414
 415
 416
 417
 418
 419
 420
 421
 422
 423
 424
 425
 426
 427
 428
 429
 430
 431
 432
 433
 434
 435
 436
 437
 438
 439
 440
 441
 442
 443
 444
 445
 446
 447
 448
 449
 450
 451
 452
 453
 454
 455
 456
 457
 458
 459
 460
 461
 462
 463
 464
 465
 466
 467
 468
 469
 470
 471
 472
 473
 474
 475
 476
 477
 478
 479
 480
 481
 482
 483
 484
 485
 486
 487
 488
 489
 490
 491
 492
 493
 494
 495
 496
 497
 498
 499
 500
 501
 502
 503
 504
 505
 506
 507
 508
 509
 510
 511
 512
 513
 514
 515
 516
 517
 518
 519
 520
 521
 522
 523
 524
 525
 526
 527
 528
 529
 530
 531
 532
 533
 534
 535
 536
 537
 538
 539
 540
 541
 542
 543
 544
 545
 546
 547
 548
 549
 550
 551
 552
 553
 554
 555
 556
 557
 558
 559
 560
 561
 562
 563
 564
 565
 566
 567
 568
 569
 570
 571
 572
 573
 574
 575
 576
 577
 578
 579
 580
 581
 582
 583
 584
 585
 586
 587
 588
 589
 590
 591
 592
 593
 594
 595
 596
 597
 598
 599
 600
 601
 602
 603
 604
 605
 606
 607
 608
 609
 610
 611
 612
 613
 614
 615
 616
 617
 618
 619
 620
 621
 622
 623
 624
 625
 626
 627
 628
 629
 630
 631
 632
 633
 634
 635
 636
 637
 638
 639
 640
 641
 642
 643
 644
 645
 646
 647
 648
 649
 650
 651
 652
 653
 654
 655
 656
 657
 658
 659
 660
 661
 662
 663
 664
 665
 666
 667
 668
 669
 670
 671
 672
 673
 674
 675
 676
 677
 678
 679
 680
 681
 682
 683
 684
 685
 686
 687
 688
 689
 690
 691
 692
 693
 694
 695
 696
 697
 698
 699
 700
 701
 702
 703
 704
 705
 706
 707
 708
 709
 710
 711
 712
 713
 714
 715
 716
 717
 718
 719
 720
 721
 722
 723
 724
 725
 726
 727
 728
 729
 730
 731
 732
 733
 734
 735
 736
 737
 738
 739
 740
 741
 742
 743
 744
 745
 746
 747
 748
 749
 750
 751
 752
 753
 754
 755
 756
 757
 758
 759
 760
 761
 762
 763
 764
 765
 766
 767
 768
 769
 770
 771
 772
 773
 774
 775
 776
 777
 778
 779
 780
 781
 782
 783
 784
 785
 786
 787
 788
 789
 790
 791
 792
 793
 794
 795
 796
 797
 798
 799
 800
 801
 802
 803
 804
 805
 806
 807
 808
 809
 810
 811
 812
 813
 814
 815
 816
 817
 818
 819
 820
 821
 822
 823
 824
 825
 826
 827
 828
 829
 830
 831
 832
 833
 834
 835
 836
 837
 838
 839
 840
 841
 842
 843
 844
 845
 846
 847
 848
 849
 850
 851
 852
 853
 854
 855
 856
 857
 858
 859
 860
 861
 862
 863
 864
 865
 866
 867
 868
 869
 870
 871
 872
 873
 874
 875
 876
 877
 878
 879
 880
 881
 882
 883
 884
 885
 886
 887
 888
 889
 890
 891
 892
 893
 894
 895
 896
 897
 898
 899
 900
 901
 902
 903
 904
 905
 906
 907
 908
 909
 910
 911
 912
 913
 914
 915
 916
 917
 918
 919
 920
 921
 922
 923
 924
 925
 926
 927
 928
 929
 930
 931
 932
 933
 934
 935
 936
 937
 938
 939
 940
 941
 942
 943
 944
 945
 946
 947
 948
 949
 950
 951
 952
 953
 954
 955
 956
 957
 958
 959
 960
 961
 962
 963
 964
 965
 966
 967
 968
 969
 970
 971
 972
 973
 974
 975
 976
 977
 978
 979
 980
 981
 982
 983
 984
 985
 986
 987
 988
 989
 990
 991
 992
 993
 994
 995
 996
 997
 998
 999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 2010-2016 Intel Corporation. All rights reserved.
 *   All rights reserved.
 *
 *   Redistribution and use in source and binary forms, with or without
 *   modification, are permitted provided that the following conditions
 *   are met:
 *
 *     * Redistributions of source code must retain the above copyright
 *       notice, this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in
 *       the documentation and/or other materials provided with the
 *       distribution.
 *     * Neither the name of Intel Corporation nor the names of its
 *       contributors may be used to endorse or promote products derived
 *       from this software without specific prior written permission.
 *
 *   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
 *   "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
 *   LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
 *   A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
 *   OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 *   SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 *   LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *   DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *   THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *   (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 *   OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */

#include <locale.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <ctype.h>
#include <getopt.h>

#include <rte_common.h>
#include <rte_log.h>
#include <rte_malloc.h>
#include <rte_memory.h>
#include <rte_memcpy.h>
#include <rte_eal.h>
#include <rte_launch.h>
#include <rte_atomic.h>
#include <rte_cycles.h>
#include <rte_prefetch.h>
#include <rte_lcore.h>
#include <rte_per_lcore.h>
#include <rte_branch_prediction.h>
#include <rte_interrupts.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_spinlock.h>

#include <rte_errno.h>
#include <rte_jobstats.h>
#include <rte_timer.h>
#include <rte_alarm.h>
#include <rte_pause.h>

#define RTE_LOGTYPE_L2FWD RTE_LOGTYPE_USER1

#define NB_MBUF   8192

#define MAX_PKT_BURST 32
#define BURST_TX_DRAIN_US 100 /* TX drain every ~100us */

/*
 * Configurable number of RX/TX ring descriptors
 */
#define RTE_TEST_RX_DESC_DEFAULT 128
#define RTE_TEST_TX_DESC_DEFAULT 512
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;

/* ethernet addresses of ports */
static struct ether_addr l2fwd_ports_eth_addr[RTE_MAX_ETHPORTS];

/* mask of enabled ports */
static uint32_t l2fwd_enabled_port_mask;

/* list of enabled ports */
static uint32_t l2fwd_dst_ports[RTE_MAX_ETHPORTS];

#define UPDATE_STEP_UP 1
#define UPDATE_STEP_DOWN 32

static unsigned int l2fwd_rx_queue_per_lcore = 1;

#define MAX_RX_QUEUE_PER_LCORE 16
#define MAX_TX_QUEUE_PER_PORT 16
struct lcore_queue_conf {
	unsigned n_rx_port;
	unsigned rx_port_list[MAX_RX_QUEUE_PER_LCORE];
	uint64_t next_flush_time[RTE_MAX_ETHPORTS];

	struct rte_timer rx_timers[MAX_RX_QUEUE_PER_LCORE];
	struct rte_jobstats port_fwd_jobs[MAX_RX_QUEUE_PER_LCORE];

	struct rte_timer flush_timer;
	struct rte_jobstats flush_job;
	struct rte_jobstats idle_job;
	struct rte_jobstats_context jobs_context;

	rte_atomic16_t stats_read_pending;
	rte_spinlock_t lock;
} __rte_cache_aligned;
struct lcore_queue_conf lcore_queue_conf[RTE_MAX_LCORE];

struct rte_eth_dev_tx_buffer *tx_buffer[RTE_MAX_ETHPORTS];

static const struct rte_eth_conf port_conf = {
	.rxmode = {
		.split_hdr_size = 0,
		.header_split   = 0, /**< Header Split disabled */
		.hw_ip_checksum = 0, /**< IP checksum offload disabled */
		.hw_vlan_filter = 0, /**< VLAN filtering disabled */
		.jumbo_frame    = 0, /**< Jumbo Frame Support disabled */
		.hw_strip_crc   = 1, /**< CRC stripped by hardware */
	},
	.txmode = {
		.mq_mode = ETH_MQ_TX_NONE,
	},
};

struct rte_mempool *l2fwd_pktmbuf_pool = NULL;

/* Per-port statistics struct */
struct l2fwd_port_statistics {
	uint64_t tx;
	uint64_t rx;
	uint64_t dropped;
} __rte_cache_aligned;
struct l2fwd_port_statistics port_statistics[RTE_MAX_ETHPORTS];

/* 1 day max */
#define MAX_TIMER_PERIOD 86400
/* default period is 10 seconds */
static int64_t timer_period = 10;
/* default timer frequency */
static double hz;
/* BURST_TX_DRAIN_US converted to cycles */
uint64_t drain_tsc;
/* Convert cycles to ns */
static inline double
cycles_to_ns(uint64_t cycles)
{
	double t = cycles;

	t *= (double)NS_PER_S;
	t /= hz;
	return t;
}

static void
show_lcore_stats(unsigned lcore_id)
{
	struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
	struct rte_jobstats_context *ctx = &qconf->jobs_context;
	struct rte_jobstats *job;
	uint8_t i;

	/* LCore statistics. */
	uint64_t stats_period, loop_count;
	uint64_t exec, exec_min, exec_max;
	uint64_t management, management_min, management_max;
	uint64_t busy, busy_min, busy_max;

	/* Jobs statistics. */
	const uint16_t port_cnt = qconf->n_rx_port;
	uint64_t jobs_exec_cnt[port_cnt], jobs_period[port_cnt];
	uint64_t jobs_exec[port_cnt], jobs_exec_min[port_cnt],
				jobs_exec_max[port_cnt];

	uint64_t flush_exec_cnt, flush_period;
	uint64_t flush_exec, flush_exec_min, flush_exec_max;

	uint64_t idle_exec_cnt;
	uint64_t idle_exec, idle_exec_min, idle_exec_max;
	uint64_t collection_time = rte_get_timer_cycles();

	/* Ask forwarding thread to give us stats. */
	rte_atomic16_set(&qconf->stats_read_pending, 1);
	rte_spinlock_lock(&qconf->lock);
	rte_atomic16_set(&qconf->stats_read_pending, 0);

	/* Collect context statistics. */
	stats_period = ctx->state_time - ctx->start_time;
	loop_count = ctx->loop_cnt;

	exec = ctx->exec_time;
	exec_min = ctx->min_exec_time;
	exec_max = ctx->max_exec_time;

	management = ctx->management_time;
	management_min = ctx->min_management_time;
	management_max = ctx->max_management_time;

	rte_jobstats_context_reset(ctx);

	for (i = 0; i < port_cnt; i++) {
		job = &qconf->port_fwd_jobs[i];

		jobs_exec_cnt[i] = job->exec_cnt;
		jobs_period[i] = job->period;

		jobs_exec[i] = job->exec_time;
		jobs_exec_min[i] = job->min_exec_time;
		jobs_exec_max[i] = job->max_exec_time;

		rte_jobstats_reset(job);
	}

	flush_exec_cnt = qconf->flush_job.exec_cnt;
	flush_period = qconf->flush_job.period;
	flush_exec = qconf->flush_job.exec_time;
	flush_exec_min = qconf->flush_job.min_exec_time;
	flush_exec_max = qconf->flush_job.max_exec_time;
	rte_jobstats_reset(&qconf->flush_job);

	idle_exec_cnt = qconf->idle_job.exec_cnt;
	idle_exec = qconf->idle_job.exec_time;
	idle_exec_min = qconf->idle_job.min_exec_time;
	idle_exec_max = qconf->idle_job.max_exec_time;
	rte_jobstats_reset(&qconf->idle_job);

	rte_spinlock_unlock(&qconf->lock);

	exec -= idle_exec;
	busy = exec + management;
	busy_min = exec_min + management_min;
	busy_max = exec_max + management_max;


	collection_time = rte_get_timer_cycles() - collection_time;

#define STAT_FMT "\n%-18s %'14.0f %6.1f%% %'10.0f %'10.0f %'10.0f"

	printf("\n----------------"
			"\nLCore %3u: statistics (time in ns, collected in %'9.0f)"
			"\n%-18s %14s %7s %10s %10s %10s "
			"\n%-18s %'14.0f"
			"\n%-18s %'14" PRIu64
			STAT_FMT /* Exec */
			STAT_FMT /* Management */
			STAT_FMT /* Busy */
			STAT_FMT, /* Idle  */
			lcore_id, cycles_to_ns(collection_time),
			"Stat type", "total", "%total", "avg", "min", "max",
			"Stats duration:", cycles_to_ns(stats_period),
			"Loop count:", loop_count,
			"Exec time",
			cycles_to_ns(exec), exec * 100.0 / stats_period,
			cycles_to_ns(loop_count  ? exec / loop_count : 0),
			cycles_to_ns(exec_min),
			cycles_to_ns(exec_max),
			"Management time",
			cycles_to_ns(management), management * 100.0 / stats_period,
			cycles_to_ns(loop_count  ? management / loop_count : 0),
			cycles_to_ns(management_min),
			cycles_to_ns(management_max),
			"Exec + management",
			cycles_to_ns(busy),  busy * 100.0 / stats_period,
			cycles_to_ns(loop_count ? busy / loop_count : 0),
			cycles_to_ns(busy_min),
			cycles_to_ns(busy_max),
			"Idle (job)",
			cycles_to_ns(idle_exec), idle_exec * 100.0 / stats_period,
			cycles_to_ns(idle_exec_cnt ? idle_exec / idle_exec_cnt : 0),
			cycles_to_ns(idle_exec_min),
			cycles_to_ns(idle_exec_max));

	for (i = 0; i < qconf->n_rx_port; i++) {
		job = &qconf->port_fwd_jobs[i];
		printf("\n\nJob %" PRIu32 ": %-20s "
				"\n%-18s %'14" PRIu64
				"\n%-18s %'14.0f"
				STAT_FMT,
				i, job->name,
				"Exec count:", jobs_exec_cnt[i],
				"Exec period: ", cycles_to_ns(jobs_period[i]),
				"Exec time",
				cycles_to_ns(jobs_exec[i]), jobs_exec[i] * 100.0 / stats_period,
				cycles_to_ns(jobs_exec_cnt[i] ? jobs_exec[i] / jobs_exec_cnt[i]
						: 0),
				cycles_to_ns(jobs_exec_min[i]),
				cycles_to_ns(jobs_exec_max[i]));
	}

	if (qconf->n_rx_port > 0) {
		job = &qconf->flush_job;
		printf("\n\nJob %" PRIu32 ": %-20s "
				"\n%-18s %'14" PRIu64
				"\n%-18s %'14.0f"
				STAT_FMT,
				i, job->name,
				"Exec count:", flush_exec_cnt,
				"Exec period: ", cycles_to_ns(flush_period),
				"Exec time",
				cycles_to_ns(flush_exec), flush_exec * 100.0 / stats_period,
				cycles_to_ns(flush_exec_cnt ? flush_exec / flush_exec_cnt : 0),
				cycles_to_ns(flush_exec_min),
				cycles_to_ns(flush_exec_max));
	}
}

/* Print out statistics on packets dropped */
static void
show_stats_cb(__rte_unused void *param)
{
	uint64_t total_packets_dropped, total_packets_tx, total_packets_rx;
	unsigned portid, lcore_id;

	total_packets_dropped = 0;
	total_packets_tx = 0;
	total_packets_rx = 0;

	const char clr[] = { 27, '[', '2', 'J', '\0' };
	const char topLeft[] = { 27, '[', '1', ';', '1', 'H', '\0' };

	/* Clear screen and move to top left */
	printf("%s%s"
			"\nPort statistics ===================================",
			clr, topLeft);

	for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
		/* skip disabled ports */
		if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
			continue;
		printf("\nStatistics for port %u ------------------------------"
				"\nPackets sent: %24"PRIu64
				"\nPackets received: %20"PRIu64
				"\nPackets dropped: %21"PRIu64,
				portid,
				port_statistics[portid].tx,
				port_statistics[portid].rx,
				port_statistics[portid].dropped);

		total_packets_dropped += port_statistics[portid].dropped;
		total_packets_tx += port_statistics[portid].tx;
		total_packets_rx += port_statistics[portid].rx;
	}

	printf("\nAggregate statistics ==============================="
			"\nTotal packets sent: %18"PRIu64
			"\nTotal packets received: %14"PRIu64
			"\nTotal packets dropped: %15"PRIu64
			"\n====================================================",
			total_packets_tx,
			total_packets_rx,
			total_packets_dropped);

	RTE_LCORE_FOREACH(lcore_id) {
		if (lcore_queue_conf[lcore_id].n_rx_port > 0)
			show_lcore_stats(lcore_id);
	}

	printf("\n====================================================\n");
	rte_eal_alarm_set(timer_period * US_PER_S, show_stats_cb, NULL);
}

static void
l2fwd_simple_forward(struct rte_mbuf *m, unsigned portid)
{
	struct ether_hdr *eth;
	void *tmp;
	int sent;
	unsigned dst_port;
	struct rte_eth_dev_tx_buffer *buffer;

	dst_port = l2fwd_dst_ports[portid];
	eth = rte_pktmbuf_mtod(m, struct ether_hdr *);

	/* 02:00:00:00:00:xx */
	tmp = &eth->d_addr.addr_bytes[0];
	*((uint64_t *)tmp) = 0x000000000002 + ((uint64_t)dst_port << 40);

	/* src addr */
	ether_addr_copy(&l2fwd_ports_eth_addr[dst_port], &eth->s_addr);

	buffer = tx_buffer[dst_port];
	sent = rte_eth_tx_buffer(dst_port, 0, buffer, m);
	if (sent)
		port_statistics[dst_port].tx += sent;
}

static void
l2fwd_job_update_cb(struct rte_jobstats *job, int64_t result)
{
	int64_t err = job->target - result;
	int64_t histeresis = job->target / 8;

	if (err < -histeresis) {
		if (job->min_period + UPDATE_STEP_DOWN < job->period)
			job->period -= UPDATE_STEP_DOWN;
	} else if (err > histeresis) {
		if (job->period + UPDATE_STEP_UP < job->max_period)
			job->period += UPDATE_STEP_UP;
	}
}

static void
l2fwd_fwd_job(__rte_unused struct rte_timer *timer, void *arg)
{
	struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
	struct rte_mbuf *m;

	const uint16_t port_idx = (uintptr_t) arg;
	const unsigned lcore_id = rte_lcore_id();
	struct lcore_queue_conf *qconf = &lcore_queue_conf[lcore_id];
	struct rte_jobstats *job = &qconf->port_fwd_jobs[port_idx];
	const uint16_t portid = qconf->rx_port_list[port_idx];

	uint8_t j;
	uint16_t total_nb_rx;

	rte_jobstats_start(&qconf->jobs_context, job);

	/* Call rx burst 2 times. This allow rte_jobstats logic to see if this
	 * function must be called more frequently. */

	total_nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
			MAX_PKT_BURST);

	for (j = 0; j < total_nb_rx; j++) {
		m = pkts_burst[j];
		rte_prefetch0(rte_pktmbuf_mtod(m, void *));
		l2fwd_simple_forward(m, portid);
	}

	if (total_nb_rx == MAX_PKT_BURST) {
		const uint16_t nb_rx = rte_eth_rx_burst(portid, 0, pkts_burst,
				MAX_PKT_BURST);

		total_nb_rx += nb_rx;
		for (j = 0; j < nb_rx; j++) {
			m = pkts_burst[j];
			rte_prefetch0(rte_pktmbuf_mtod(m, void *));
			l2fwd_simple_forward(m, portid);
		}
	}

	port_statistics[portid].rx += total_nb_rx;

	/* Adjust period time in which we are running here. */
	if (rte_jobstats_finish(job, total_nb_rx) != 0) {
		rte_timer_reset(&qconf->rx_timers[port_idx], job->period, PERIODICAL,
				lcore_id, l2fwd_fwd_job, arg);
	}
}

static void
l2fwd_flush_job(__rte_unused struct rte_timer *timer, __rte_unused void *arg)
{
	uint64_t now;
	unsigned lcore_id;
	struct lcore_queue_conf *qconf;
	uint16_t portid;
	unsigned i;
	uint32_t sent;
	struct rte_eth_dev_tx_buffer *buffer;

	lcore_id = rte_lcore_id();
	qconf = &lcore_queue_conf[lcore_id];

	rte_jobstats_start(&qconf->jobs_context, &qconf->flush_job);

	now = rte_get_timer_cycles();
	lcore_id = rte_lcore_id();
	qconf = &lcore_queue_conf[lcore_id];

	for (i = 0; i < qconf->n_rx_port; i++) {
		portid = l2fwd_dst_ports[qconf->rx_port_list[i]];

		if (qconf->next_flush_time[portid] <= now)
			continue;

		buffer = tx_buffer[portid];
		sent = rte_eth_tx_buffer_flush(portid, 0, buffer);
		if (sent)
			port_statistics[portid].tx += sent;

		qconf->next_flush_time[portid] = rte_get_timer_cycles() + drain_tsc;
	}

	/* Pass target to indicate that this job is happy of time interwal
	 * in which it was called. */
	rte_jobstats_finish(&qconf->flush_job, qconf->flush_job.target);
}

/* main processing loop */
static void
l2fwd_main_loop(void)
{
	unsigned lcore_id;
	unsigned i, portid;
	struct lcore_queue_conf *qconf;
	uint8_t stats_read_pending = 0;
	uint8_t need_manage;

	lcore_id = rte_lcore_id();
	qconf = &lcore_queue_conf[lcore_id];

	if (qconf->n_rx_port == 0) {
		RTE_LOG(INFO, L2FWD, "lcore %u has nothing to do\n", lcore_id);
		return;
	}

	RTE_LOG(INFO, L2FWD, "entering main loop on lcore %u\n", lcore_id);

	for (i = 0; i < qconf->n_rx_port; i++) {

		portid = qconf->rx_port_list[i];
		RTE_LOG(INFO, L2FWD, " -- lcoreid=%u portid=%u\n", lcore_id,
			portid);
	}

	rte_jobstats_init(&qconf->idle_job, "idle", 0, 0, 0, 0);

	for (;;) {
		rte_spinlock_lock(&qconf->lock);

		do {
			rte_jobstats_context_start(&qconf->jobs_context);

			/* Do the Idle job:
			 * - Read stats_read_pending flag
			 * - check if some real job need to be executed
			 */
			rte_jobstats_start(&qconf->jobs_context, &qconf->idle_job);

			uint64_t repeats = 0;

			do {
				uint8_t i;
				uint64_t now = rte_get_timer_cycles();

				repeats++;
				need_manage = qconf->flush_timer.expire < now;
				/* Check if we was esked to give a stats. */
				stats_read_pending =
						rte_atomic16_read(&qconf->stats_read_pending);
				need_manage |= stats_read_pending;

				for (i = 0; i < qconf->n_rx_port && !need_manage; i++)
					need_manage = qconf->rx_timers[i].expire < now;

			} while (!need_manage);

			if (likely(repeats != 1))
				rte_jobstats_finish(&qconf->idle_job, qconf->idle_job.target);
			else
				rte_jobstats_abort(&qconf->idle_job);

			rte_timer_manage();
			rte_jobstats_context_finish(&qconf->jobs_context);
		} while (likely(stats_read_pending == 0));

		rte_spinlock_unlock(&qconf->lock);
		rte_pause();
	}
}

static int
l2fwd_launch_one_lcore(__attribute__((unused)) void *dummy)
{
	l2fwd_main_loop();
	return 0;
}

/* display usage */
static void
l2fwd_usage(const char *prgname)
{
	printf("%s [EAL options] -- -p PORTMASK [-q NQ]\n"
	       "  -p PORTMASK: hexadecimal bitmask of ports to configure\n"
	       "  -q NQ: number of queue (=ports) per lcore (default is 1)\n"
		   "  -T PERIOD: statistics will be refreshed each PERIOD seconds (0 to disable, 10 default, 86400 maximum)\n"
		   "  -l set system default locale instead of default (\"C\" locale) for thousands separator in stats.",
	       prgname);
}

static int
l2fwd_parse_portmask(const char *portmask)
{
	char *end = NULL;
	unsigned long pm;

	/* parse hexadecimal string */
	pm = strtoul(portmask, &end, 16);
	if ((portmask[0] == '\0') || (end == NULL) || (*end != '\0'))
		return -1;

	if (pm == 0)
		return -1;

	return pm;
}

static unsigned int
l2fwd_parse_nqueue(const char *q_arg)
{
	char *end = NULL;
	unsigned long n;

	/* parse hexadecimal string */
	n = strtoul(q_arg, &end, 10);
	if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
		return 0;
	if (n == 0)
		return 0;
	if (n >= MAX_RX_QUEUE_PER_LCORE)
		return 0;

	return n;
}

static int
l2fwd_parse_timer_period(const char *q_arg)
{
	char *end = NULL;
	int n;

	/* parse number string */
	n = strtol(q_arg, &end, 10);
	if ((q_arg[0] == '\0') || (end == NULL) || (*end != '\0'))
		return -1;
	if (n >= MAX_TIMER_PERIOD)
		return -1;

	return n;
}

/* Parse the argument given in the command line of the application */
static int
l2fwd_parse_args(int argc, char **argv)
{
	int opt, ret;
	char **argvopt;
	int option_index;
	char *prgname = argv[0];
	static struct option lgopts[] = {
		{NULL, 0, 0, 0}
	};

	argvopt = argv;

	while ((opt = getopt_long(argc, argvopt, "p:q:T:l",
				  lgopts, &option_index)) != EOF) {

		switch (opt) {
		/* portmask */
		case 'p':
			l2fwd_enabled_port_mask = l2fwd_parse_portmask(optarg);
			if (l2fwd_enabled_port_mask == 0) {
				printf("invalid portmask\n");
				l2fwd_usage(prgname);
				return -1;
			}
			break;

		/* nqueue */
		case 'q':
			l2fwd_rx_queue_per_lcore = l2fwd_parse_nqueue(optarg);
			if (l2fwd_rx_queue_per_lcore == 0) {
				printf("invalid queue number\n");
				l2fwd_usage(prgname);
				return -1;
			}
			break;

		/* timer period */
		case 'T':
			timer_period = l2fwd_parse_timer_period(optarg);
			if (timer_period < 0) {
				printf("invalid timer period\n");
				l2fwd_usage(prgname);
				return -1;
			}
			break;

		/* For thousands separator in printf. */
		case 'l':
			setlocale(LC_ALL, "");
			break;

		/* long options */
		case 0:
			l2fwd_usage(prgname);
			return -1;

		default:
			l2fwd_usage(prgname);
			return -1;
		}
	}

	if (optind >= 0)
		argv[optind-1] = prgname;

	ret = optind-1;
	optind = 1; /* reset getopt lib */
	return ret;
}

/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(uint16_t port_num, uint32_t port_mask)
{
#define CHECK_INTERVAL 100 /* 100ms */
#define MAX_CHECK_TIME 90 /* 9s (90 * 100ms) in total */
	uint16_t portid;
	uint8_t count, all_ports_up, print_flag = 0;
	struct rte_eth_link link;

	printf("\nChecking link status");
	fflush(stdout);
	for (count = 0; count <= MAX_CHECK_TIME; count++) {
		all_ports_up = 1;
		for (portid = 0; portid < port_num; portid++) {
			if ((port_mask & (1 << portid)) == 0)
				continue;
			memset(&link, 0, sizeof(link));
			rte_eth_link_get_nowait(portid, &link);
			/* print link status if flag set */
			if (print_flag == 1) {
				if (link.link_status)
					printf(
					"Port%d Link Up. Speed %u Mbps - %s\n",
						portid, link.link_speed,
				(link.link_duplex == ETH_LINK_FULL_DUPLEX) ?
					("full-duplex") : ("half-duplex\n"));
				else
					printf("Port %d Link Down\n", portid);
				continue;
			}
			/* clear all_ports_up flag if any link down */
			if (link.link_status == ETH_LINK_DOWN) {
				all_ports_up = 0;
				break;
			}
		}
		/* after finally printing all link status, get out */
		if (print_flag == 1)
			break;

		if (all_ports_up == 0) {
			printf(".");
			fflush(stdout);
			rte_delay_ms(CHECK_INTERVAL);
		}

		/* set the print_flag if all ports up or timeout */
		if (all_ports_up == 1 || count == (MAX_CHECK_TIME - 1)) {
			print_flag = 1;
			printf("done\n");
		}
	}
}

int
main(int argc, char **argv)
{
	struct lcore_queue_conf *qconf;
	struct rte_eth_dev_info dev_info;
	unsigned lcore_id, rx_lcore_id;
	unsigned nb_ports_in_mask = 0;
	int ret;
	char name[RTE_JOBSTATS_NAMESIZE];
	uint16_t nb_ports;
	uint16_t nb_ports_available;
	uint16_t portid, last_port;
	uint8_t i;

	/* init EAL */
	ret = rte_eal_init(argc, argv);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid EAL arguments\n");
	argc -= ret;
	argv += ret;

	/* parse application arguments (after the EAL ones) */
	ret = l2fwd_parse_args(argc, argv);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid L2FWD arguments\n");

	rte_timer_subsystem_init();

	/* fetch default timer frequency. */
	hz = rte_get_timer_hz();

	/* create the mbuf pool */
	l2fwd_pktmbuf_pool =
		rte_pktmbuf_pool_create("mbuf_pool", NB_MBUF, 32,
			0, RTE_MBUF_DEFAULT_BUF_SIZE, rte_socket_id());
	if (l2fwd_pktmbuf_pool == NULL)
		rte_exit(EXIT_FAILURE, "Cannot init mbuf pool\n");

	nb_ports = rte_eth_dev_count();
	if (nb_ports == 0)
		rte_exit(EXIT_FAILURE, "No Ethernet ports - bye\n");

	/* reset l2fwd_dst_ports */
	for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++)
		l2fwd_dst_ports[portid] = 0;
	last_port = 0;

	/*
	 * Each logical core is assigned a dedicated TX queue on each port.
	 */
	for (portid = 0; portid < nb_ports; portid++) {
		/* skip ports that are not enabled */
		if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
			continue;

		if (nb_ports_in_mask % 2) {
			l2fwd_dst_ports[portid] = last_port;
			l2fwd_dst_ports[last_port] = portid;
		} else
			last_port = portid;

		nb_ports_in_mask++;

		rte_eth_dev_info_get(portid, &dev_info);
	}
	if (nb_ports_in_mask % 2) {
		printf("Notice: odd number of ports in portmask.\n");
		l2fwd_dst_ports[last_port] = last_port;
	}

	rx_lcore_id = 0;
	qconf = NULL;

	/* Initialize the port/queue configuration of each logical core */
	for (portid = 0; portid < nb_ports; portid++) {
		/* skip ports that are not enabled */
		if ((l2fwd_enabled_port_mask & (1 << portid)) == 0)
			continue;

		/* get the lcore_id for this port */
		while (rte_lcore_is_enabled(rx_lcore_id) == 0 ||
		       lcore_queue_conf[rx_lcore_id].n_rx_port ==
		       l2fwd_rx_queue_per_lcore) {
			rx_lcore_id++;
			if (rx_lcore_id >= RTE_MAX_LCORE)
				rte_exit(EXIT_FAILURE, "Not enough cores\n");
		}

		if (qconf != &lcore_queue_conf[rx_lcore_id])
			/* Assigned a new logical core in the loop above. */
			qconf = &lcore_queue_conf[rx_lcore_id];

		qconf->rx_port_list[qconf->n_rx_port] = portid;
		qconf->n_rx_port++;
		printf("Lcore %u: RX port %u\n", rx_lcore_id, portid);
	}

	nb_ports_available = nb_ports;

	/* Initialise each port */
	for (portid = 0; portid < nb_ports; portid++) {
		/* skip ports that are not enabled */
		if ((l2fwd_enabled_port_mask & (1 << portid)) == 0) {
			printf("Skipping disabled port %u\n", portid);
			nb_ports_available--;
			continue;
		}
		/* init port */
		printf("Initializing port %u... ", portid);
		fflush(stdout);
		ret = rte_eth_dev_configure(portid, 1, 1, &port_conf);
		if (ret < 0)
			rte_exit(EXIT_FAILURE, "Cannot configure device: err=%d, port=%u\n",
				  ret, portid);

		ret = rte_eth_dev_adjust_nb_rx_tx_desc(portid, &nb_rxd,
						       &nb_txd);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
				 "Cannot adjust number of descriptors: err=%d, port=%u\n",
				 ret, portid);

		rte_eth_macaddr_get(portid, &l2fwd_ports_eth_addr[portid]);

		/* init one RX queue */
		fflush(stdout);
		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
					     rte_eth_dev_socket_id(portid),
					     NULL,
					     l2fwd_pktmbuf_pool);
		if (ret < 0)
			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup:err=%d, port=%u\n",
				  ret, portid);

		/* init one TX queue on each port */
		fflush(stdout);
		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
				rte_eth_dev_socket_id(portid),
				NULL);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
			"rte_eth_tx_queue_setup:err=%d, port=%u\n",
				ret, portid);

		/* Initialize TX buffers */
		tx_buffer[portid] = rte_zmalloc_socket("tx_buffer",
				RTE_ETH_TX_BUFFER_SIZE(MAX_PKT_BURST), 0,
				rte_eth_dev_socket_id(portid));
		if (tx_buffer[portid] == NULL)
			rte_exit(EXIT_FAILURE, "Cannot allocate buffer for tx on port %u\n",
					portid);

		rte_eth_tx_buffer_init(tx_buffer[portid], MAX_PKT_BURST);

		ret = rte_eth_tx_buffer_set_err_callback(tx_buffer[portid],
				rte_eth_tx_buffer_count_callback,
				&port_statistics[portid].dropped);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
			"Cannot set error callback for tx buffer on port %u\n",
				 portid);

		/* Start device */
		ret = rte_eth_dev_start(portid);
		if (ret < 0)
			rte_exit(EXIT_FAILURE, "rte_eth_dev_start:err=%d, port=%u\n",
				  ret, portid);

		printf("done:\n");

		rte_eth_promiscuous_enable(portid);

		printf("Port %u, MAC address: %02X:%02X:%02X:%02X:%02X:%02X\n\n",
				portid,
				l2fwd_ports_eth_addr[portid].addr_bytes[0],
				l2fwd_ports_eth_addr[portid].addr_bytes[1],
				l2fwd_ports_eth_addr[portid].addr_bytes[2],
				l2fwd_ports_eth_addr[portid].addr_bytes[3],
				l2fwd_ports_eth_addr[portid].addr_bytes[4],
				l2fwd_ports_eth_addr[portid].addr_bytes[5]);

		/* initialize port stats */
		memset(&port_statistics, 0, sizeof(port_statistics));
	}

	if (!nb_ports_available) {
		rte_exit(EXIT_FAILURE,
			"All available ports are disabled. Please set portmask.\n");
	}

	check_all_ports_link_status(nb_ports, l2fwd_enabled_port_mask);

	drain_tsc = (hz + US_PER_S - 1) / US_PER_S * BURST_TX_DRAIN_US;

	RTE_LCORE_FOREACH(lcore_id) {
		qconf = &lcore_queue_conf[lcore_id];

		rte_spinlock_init(&qconf->lock);

		if (rte_jobstats_context_init(&qconf->jobs_context) != 0)
			rte_panic("Jobs stats context for core %u init failed\n", lcore_id);

		if (qconf->n_rx_port == 0) {
			RTE_LOG(INFO, L2FWD,
				"lcore %u: no ports so no jobs stats context initialization\n",
				lcore_id);
			continue;
		}
		/* Add flush job.
		 * Set fixed period by setting min = max = initial period. Set target to
		 * zero as it is irrelevant for this job. */
		rte_jobstats_init(&qconf->flush_job, "flush", drain_tsc, drain_tsc,
				drain_tsc, 0);

		rte_timer_init(&qconf->flush_timer);
		ret = rte_timer_reset(&qconf->flush_timer, drain_tsc, PERIODICAL,
				lcore_id, &l2fwd_flush_job, NULL);

		if (ret < 0) {
			rte_exit(1, "Failed to reset flush job timer for lcore %u: %s",
					lcore_id, rte_strerror(-ret));
		}

		for (i = 0; i < qconf->n_rx_port; i++) {
			struct rte_jobstats *job = &qconf->port_fwd_jobs[i];

			portid = qconf->rx_port_list[i];
			printf("Setting forward job for port %u\n", portid);

			snprintf(name, RTE_DIM(name), "port %u fwd", portid);
			/* Setup forward job.
			 * Set min, max and initial period. Set target to MAX_PKT_BURST as
			 * this is desired optimal RX/TX burst size. */
			rte_jobstats_init(job, name, 0, drain_tsc, 0, MAX_PKT_BURST);
			rte_jobstats_set_update_period_function(job, l2fwd_job_update_cb);

			rte_timer_init(&qconf->rx_timers[i]);
			ret = rte_timer_reset(&qconf->rx_timers[i], 0, PERIODICAL, lcore_id,
					&l2fwd_fwd_job, (void *)(uintptr_t)i);

			if (ret < 0) {
				rte_exit(1, "Failed to reset lcore %u port %u job timer: %s",
						lcore_id, qconf->rx_port_list[i], rte_strerror(-ret));
			}
		}
	}

	if (timer_period)
		rte_eal_alarm_set(timer_period * MS_PER_S, show_stats_cb, NULL);
	else
		RTE_LOG(INFO, L2FWD, "Stats display disabled\n");

	/* launch per-lcore init on every lcore */
	rte_eal_mp_remote_launch(l2fwd_launch_one_lcore, NULL, CALL_MASTER);
	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
		if (rte_eal_wait_lcore(lcore_id) < 0)
			return -1;
	}

	return 0;
}