summaryrefslogtreecommitdiff
path: root/app/test/test_pmd_perf.c
blob: b85da914c20c184c15a03fc58b4aeb5cc47ac44d (plain)
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
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2014 Intel Corporation
 */


#include <stdio.h>
#include <inttypes.h>
#include <signal.h>
#include <unistd.h>
#include <rte_cycles.h>
#include <rte_ethdev.h>
#include <rte_byteorder.h>
#include <rte_atomic.h>
#include <rte_malloc.h>
#include "packet_burst_generator.h"
#include "test.h"

#define NB_ETHPORTS_USED                (1)
#define NB_SOCKETS                      (2)
#define MEMPOOL_CACHE_SIZE 250
#define MAX_PKT_BURST                   (32)
#define RTE_TEST_RX_DESC_DEFAULT        (1024)
#define RTE_TEST_TX_DESC_DEFAULT        (1024)
#define RTE_PORT_ALL            (~(uint16_t)0x0)

/* how long test would take at full line rate */
#define RTE_TEST_DURATION                (2)

/*
 * RX and TX Prefetch, Host, and Write-back threshold values should be
 * carefully set for optimal performance. Consult the network
 * controller's datasheet and supporting DPDK documentation for guidance
 * on how these parameters should be set.
 */
#define RX_PTHRESH 8 /**< Default values of RX prefetch threshold reg. */
#define RX_HTHRESH 8 /**< Default values of RX host threshold reg. */
#define RX_WTHRESH 0 /**< Default values of RX write-back threshold reg. */

/*
 * These default values are optimized for use with the Intel(R) 82599 10 GbE
 * Controller and the DPDK ixgbe PMD. Consider using other values for other
 * network controllers and/or network drivers.
 */
#define TX_PTHRESH 32 /**< Default values of TX prefetch threshold reg. */
#define TX_HTHRESH 0  /**< Default values of TX host threshold reg. */
#define TX_WTHRESH 0  /**< Default values of TX write-back threshold reg. */

#define MAX_TRAFFIC_BURST              2048

#define NB_MBUF RTE_MAX(						\
		(unsigned)(nb_ports*nb_rx_queue*nb_rxd +		\
			   nb_ports*nb_lcores*MAX_PKT_BURST +		\
			   nb_ports*nb_tx_queue*nb_txd +		\
			   nb_lcores*MEMPOOL_CACHE_SIZE +		\
			   nb_ports*MAX_TRAFFIC_BURST),			\
			(unsigned)8192)


static struct rte_mempool *mbufpool[NB_SOCKETS];
/* ethernet addresses of ports */
static struct rte_ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];

static struct rte_eth_conf port_conf = {
	.rxmode = {
		.mq_mode = ETH_MQ_RX_NONE,
		.max_rx_pkt_len = ETHER_MAX_LEN,
		.split_hdr_size = 0,
	},
	.txmode = {
		.mq_mode = ETH_MQ_TX_NONE,
	},
	.lpbk_mode = 1,  /* enable loopback */
};

static struct rte_eth_rxconf rx_conf = {
	.rx_thresh = {
		.pthresh = RX_PTHRESH,
		.hthresh = RX_HTHRESH,
		.wthresh = RX_WTHRESH,
	},
	.rx_free_thresh = 32,
};

static struct rte_eth_txconf tx_conf = {
	.tx_thresh = {
		.pthresh = TX_PTHRESH,
		.hthresh = TX_HTHRESH,
		.wthresh = TX_WTHRESH,
	},
	.tx_free_thresh = 32, /* Use PMD default values */
	.tx_rs_thresh = 32, /* Use PMD default values */
};

enum {
	LCORE_INVALID = 0,
	LCORE_AVAIL,
	LCORE_USED,
};

struct lcore_conf {
	uint8_t status;
	uint8_t socketid;
	uint16_t nb_ports;
	uint16_t portlist[RTE_MAX_ETHPORTS];
} __rte_cache_aligned;

struct lcore_conf lcore_conf[RTE_MAX_LCORE];

static uint64_t link_mbps;

enum {
	SC_CONTINUOUS = 0,
	SC_BURST_POLL_FIRST,
	SC_BURST_XMIT_FIRST,
};

static uint32_t sc_flag;

/* Check the link status of all ports in up to 3s, 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 30 /* 3s (30 * 100ms) in total */
	uint16_t portid;
	uint8_t count, all_ports_up, print_flag = 0;
	struct rte_eth_link link;

	printf("Checking link statuses...\n");
	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"));
					if (link_mbps == 0)
						link_mbps = link.link_speed;
				} 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) {
			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;
	}
}

static void
print_ethaddr(const char *name, const struct rte_ether_addr *eth_addr)
{
	char buf[ETHER_ADDR_FMT_SIZE];
	ether_format_addr(buf, ETHER_ADDR_FMT_SIZE, eth_addr);
	printf("%s%s", name, buf);
}

static int
init_traffic(struct rte_mempool *mp,
	     struct rte_mbuf **pkts_burst, uint32_t burst_size)
{
	struct rte_ether_hdr pkt_eth_hdr;
	struct ipv4_hdr pkt_ipv4_hdr;
	struct udp_hdr pkt_udp_hdr;
	uint32_t pktlen;
	static uint8_t src_mac[] = { 0x00, 0xFF, 0xAA, 0xFF, 0xAA, 0xFF };
	static uint8_t dst_mac[] = { 0x00, 0xAA, 0xFF, 0xAA, 0xFF, 0xAA };


	initialize_eth_header(&pkt_eth_hdr,
		(struct rte_ether_addr *)src_mac,
		(struct rte_ether_addr *)dst_mac, ETHER_TYPE_IPv4, 0, 0);

	pktlen = initialize_ipv4_header(&pkt_ipv4_hdr,
					IPV4_ADDR(10, 0, 0, 1),
					IPV4_ADDR(10, 0, 0, 2), 26);
	printf("IPv4 pktlen %u\n", pktlen);

	pktlen = initialize_udp_header(&pkt_udp_hdr, 0, 0, 18);

	printf("UDP pktlen %u\n", pktlen);

	return generate_packet_burst(mp, pkts_burst, &pkt_eth_hdr,
				     0, &pkt_ipv4_hdr, 1,
				     &pkt_udp_hdr, burst_size,
				     PACKET_BURST_GEN_PKT_LEN, 1);
}

static int
init_lcores(void)
{
	unsigned lcore_id;

	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
		lcore_conf[lcore_id].socketid =
			rte_lcore_to_socket_id(lcore_id);
		if (rte_lcore_is_enabled(lcore_id) == 0) {
			lcore_conf[lcore_id].status = LCORE_INVALID;
			continue;
		} else
			lcore_conf[lcore_id].status = LCORE_AVAIL;
	}
	return 0;
}

static int
init_mbufpool(unsigned nb_mbuf)
{
	int socketid;
	unsigned lcore_id;
	char s[64];

	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
		if (rte_lcore_is_enabled(lcore_id) == 0)
			continue;

		socketid = rte_lcore_to_socket_id(lcore_id);
		if (socketid >= NB_SOCKETS) {
			rte_exit(EXIT_FAILURE,
				"Socket %d of lcore %u is out of range %d\n",
				socketid, lcore_id, NB_SOCKETS);
		}
		if (mbufpool[socketid] == NULL) {
			snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
			mbufpool[socketid] =
				rte_pktmbuf_pool_create(s, nb_mbuf,
					MEMPOOL_CACHE_SIZE, 0,
					RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
			if (mbufpool[socketid] == NULL)
				rte_exit(EXIT_FAILURE,
					"Cannot init mbuf pool on socket %d\n",
					socketid);
			else
				printf("Allocated mbuf pool on socket %d\n",
					socketid);
		}
	}
	return 0;
}

static uint16_t
alloc_lcore(uint16_t socketid)
{
	unsigned lcore_id;

	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
		if (LCORE_AVAIL != lcore_conf[lcore_id].status ||
		    lcore_conf[lcore_id].socketid != socketid ||
		    lcore_id == rte_get_master_lcore())
			continue;
		lcore_conf[lcore_id].status = LCORE_USED;
		lcore_conf[lcore_id].nb_ports = 0;
		return lcore_id;
	}

	return (uint16_t)-1;
}

static volatile uint64_t stop;
static uint64_t count;
static uint64_t drop;
static uint64_t idle;

static void
reset_count(void)
{
	count = 0;
	drop = 0;
	idle = 0;
}

static void
stats_display(uint16_t port_id)
{
	struct rte_eth_stats stats;
	rte_eth_stats_get(port_id, &stats);

	printf("  RX-packets: %-10"PRIu64" RX-missed: %-10"PRIu64" RX-bytes:  "
	       "%-"PRIu64"\n",
	       stats.ipackets, stats.imissed, stats.ibytes);
	printf("  RX-errors: %-10"PRIu64" RX-nombuf:  %-10"PRIu64"\n",
	       stats.ierrors, stats.rx_nombuf);
	printf("  TX-packets: %-10"PRIu64" TX-errors: %-10"PRIu64" TX-bytes:  "
	       "%-"PRIu64"\n",
	       stats.opackets, stats.oerrors, stats.obytes);
}

static void
signal_handler(int signum)
{
	/*  USR1 signal, stop testing */
	if (signum == SIGUSR1) {
		printf("Force Stop!\n");
		stop = 1;
	}

	/*  USR2 signal, print stats */
	if (signum == SIGUSR2)
		stats_display(0);
}

struct rte_mbuf **tx_burst;

uint64_t (*do_measure)(struct lcore_conf *conf,
		       struct rte_mbuf *pkts_burst[],
		       uint64_t total_pkts);

static uint64_t
measure_rxtx(struct lcore_conf *conf,
	     struct rte_mbuf *pkts_burst[],
	     uint64_t total_pkts)
{
	unsigned i, portid, nb_rx, nb_tx;
	uint64_t prev_tsc, cur_tsc;

	prev_tsc = rte_rdtsc();

	while (likely(!stop)) {
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];
			nb_rx = rte_eth_rx_burst(portid, 0,
						 pkts_burst, MAX_PKT_BURST);
			if (unlikely(nb_rx == 0)) {
				idle++;
				continue;
			}

			count += nb_rx;
			nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
			if (unlikely(nb_tx < nb_rx)) {
				drop += (nb_rx - nb_tx);
				do {
					rte_pktmbuf_free(pkts_burst[nb_tx]);
				} while (++nb_tx < nb_rx);
			}
		}
		if (unlikely(count >= total_pkts))
			break;
	}

	cur_tsc = rte_rdtsc();

	return cur_tsc - prev_tsc;
}

static uint64_t
measure_rxonly(struct lcore_conf *conf,
	       struct rte_mbuf *pkts_burst[],
	       uint64_t total_pkts)
{
	unsigned i, portid, nb_rx, nb_tx;
	uint64_t diff_tsc, cur_tsc;

	diff_tsc = 0;
	while (likely(!stop)) {
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];

			cur_tsc = rte_rdtsc();
			nb_rx = rte_eth_rx_burst(portid, 0,
						 pkts_burst, MAX_PKT_BURST);
			if (unlikely(nb_rx == 0)) {
				idle++;
				continue;
			}
			diff_tsc += rte_rdtsc() - cur_tsc;

			count += nb_rx;
			nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
			if (unlikely(nb_tx < nb_rx)) {
				drop += (nb_rx - nb_tx);
				do {
					rte_pktmbuf_free(pkts_burst[nb_tx]);
				} while (++nb_tx < nb_rx);
			}
		}
		if (unlikely(count >= total_pkts))
			break;
	}

	return diff_tsc;
}

static uint64_t
measure_txonly(struct lcore_conf *conf,
	       struct rte_mbuf *pkts_burst[],
	       uint64_t total_pkts)
{
	unsigned i, portid, nb_rx, nb_tx;
	uint64_t diff_tsc, cur_tsc;

	printf("do tx measure\n");
	diff_tsc = 0;
	while (likely(!stop)) {
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];
			nb_rx = rte_eth_rx_burst(portid, 0,
						 pkts_burst, MAX_PKT_BURST);
			if (unlikely(nb_rx == 0)) {
				idle++;
				continue;
			}

			count += nb_rx;

			cur_tsc = rte_rdtsc();
			nb_tx = rte_eth_tx_burst(portid, 0, pkts_burst, nb_rx);
			if (unlikely(nb_tx < nb_rx)) {
				drop += (nb_rx - nb_tx);
				do {
					rte_pktmbuf_free(pkts_burst[nb_tx]);
				} while (++nb_tx < nb_rx);
			}
			diff_tsc += rte_rdtsc() - cur_tsc;
		}
		if (unlikely(count >= total_pkts))
			break;
	}

	return diff_tsc;
}

/* main processing loop */
static int
main_loop(__rte_unused void *args)
{
#define PACKET_SIZE 64
#define FRAME_GAP 12
#define MAC_PREAMBLE 8
	struct rte_mbuf *pkts_burst[MAX_PKT_BURST];
	unsigned lcore_id;
	unsigned i, portid, nb_rx = 0, nb_tx = 0;
	struct lcore_conf *conf;
	int pkt_per_port;
	uint64_t diff_tsc;
	uint64_t packets_per_second, total_packets;

	lcore_id = rte_lcore_id();
	conf = &lcore_conf[lcore_id];
	if (conf->status != LCORE_USED)
		return 0;

	pkt_per_port = MAX_TRAFFIC_BURST;

	int idx = 0;
	for (i = 0; i < conf->nb_ports; i++) {
		int num = pkt_per_port;
		portid = conf->portlist[i];
		printf("inject %d packet to port %d\n", num, portid);
		while (num) {
			nb_tx = RTE_MIN(MAX_PKT_BURST, num);
			nb_tx = rte_eth_tx_burst(portid, 0,
						&tx_burst[idx], nb_tx);
			num -= nb_tx;
			idx += nb_tx;
		}
	}
	printf("Total packets inject to prime ports = %u\n", idx);

	packets_per_second = (link_mbps * 1000 * 1000) /
		((PACKET_SIZE + FRAME_GAP + MAC_PREAMBLE) * CHAR_BIT);
	printf("Each port will do %"PRIu64" packets per second\n",
	       packets_per_second);

	total_packets = RTE_TEST_DURATION * conf->nb_ports * packets_per_second;
	printf("Test will stop after at least %"PRIu64" packets received\n",
		+ total_packets);

	diff_tsc = do_measure(conf, pkts_burst, total_packets);

	for (i = 0; i < conf->nb_ports; i++) {
		portid = conf->portlist[i];
		int nb_free = 0;
		uint64_t timeout = 10000;
		do { /* dry out */
			nb_rx = rte_eth_rx_burst(portid, 0,
						 pkts_burst, MAX_PKT_BURST);
			nb_tx = 0;
			while (nb_tx < nb_rx)
				rte_pktmbuf_free(pkts_burst[nb_tx++]);
			nb_free += nb_rx;

			if (unlikely(nb_rx == 0))
				timeout--;
		} while (nb_free != pkt_per_port && timeout != 0);
		printf("free %d (expected %d) mbuf left in port %u\n", nb_free,
		       pkt_per_port, portid);
	}

	if (count == 0)
		return -1;

	printf("%"PRIu64" packet, %"PRIu64" drop, %"PRIu64" idle\n",
	       count, drop, idle);
	printf("Result: %"PRIu64" cycles per packet\n", diff_tsc / count);

	return 0;
}

static rte_atomic64_t start;

static inline int
poll_burst(void *args)
{
#define MAX_IDLE           (10000)
	unsigned lcore_id;
	struct rte_mbuf **pkts_burst;
	uint64_t diff_tsc, cur_tsc;
	uint16_t next[RTE_MAX_ETHPORTS];
	struct lcore_conf *conf;
	uint32_t pkt_per_port = *((uint32_t *)args);
	unsigned i, portid, nb_rx = 0;
	uint64_t total;
	uint64_t timeout = MAX_IDLE;
	int num[RTE_MAX_ETHPORTS];

	lcore_id = rte_lcore_id();
	conf = &lcore_conf[lcore_id];
	if (conf->status != LCORE_USED)
		return 0;

	total = pkt_per_port * conf->nb_ports;
	printf("start to receive total expect %"PRIu64"\n", total);

	pkts_burst = (struct rte_mbuf **)
		rte_calloc_socket("poll_burst",
				  total, sizeof(void *),
				  RTE_CACHE_LINE_SIZE, conf->socketid);
	if (!pkts_burst)
		return -1;

	for (i = 0; i < conf->nb_ports; i++) {
		portid = conf->portlist[i];
		next[portid] = i * pkt_per_port;
		num[portid] = pkt_per_port;
	}

	while (!rte_atomic64_read(&start))
		;

	cur_tsc = rte_rdtsc();
	while (total) {
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];
			nb_rx = rte_eth_rx_burst(portid, 0,
					&pkts_burst[next[portid]],
					RTE_MIN(MAX_PKT_BURST, num[portid]));
			if (unlikely(nb_rx == 0)) {
				timeout--;
				if (unlikely(timeout == 0))
					goto timeout;
				continue;
			}
			next[portid] += nb_rx;
			num[portid] -= nb_rx;
			total -= nb_rx;
		}
	}
timeout:
	diff_tsc = rte_rdtsc() - cur_tsc;

	printf("%"PRIu64" packets lost, IDLE %"PRIu64" times\n",
	       total, MAX_IDLE - timeout);
	/* clean up */
	total = pkt_per_port * conf->nb_ports - total;
	for (i = 0; i < total; i++)
		rte_pktmbuf_free(pkts_burst[i]);

	rte_free(pkts_burst);

	if (total > 0)
		return diff_tsc / total;
	else
		return -1;
}

static int
exec_burst(uint32_t flags, int lcore)
{
	unsigned i, portid, nb_tx = 0;
	struct lcore_conf *conf;
	uint32_t pkt_per_port;
	int num, idx = 0;
	int diff_tsc;

	conf = &lcore_conf[lcore];

	pkt_per_port = MAX_TRAFFIC_BURST;
	num = pkt_per_port * conf->nb_ports;

	rte_atomic64_init(&start);

	/* start polling thread, but not actually poll yet */
	rte_eal_remote_launch(poll_burst,
			      (void *)&pkt_per_port, lcore);

	/* Only when polling first */
	if (flags == SC_BURST_POLL_FIRST)
		rte_atomic64_set(&start, 1);

	/* start xmit */
	while (num) {
		nb_tx = RTE_MIN(MAX_PKT_BURST, num);
		for (i = 0; i < conf->nb_ports; i++) {
			portid = conf->portlist[i];
			nb_tx = rte_eth_tx_burst(portid, 0,
					 &tx_burst[idx], nb_tx);
			idx += nb_tx;
			num -= nb_tx;
		}

	}

	sleep(5);

	/* only when polling second  */
	if (flags == SC_BURST_XMIT_FIRST)
		rte_atomic64_set(&start, 1);

	/* wait for polling finished */
	diff_tsc = rte_eal_wait_lcore(lcore);
	if (diff_tsc < 0) {
		printf("exec_burst: Failed to measure cycles per packet\n");
		return -1;
	}

	printf("Result: %d cycles per packet\n", diff_tsc);

	return 0;
}

static int
test_pmd_perf(void)
{
	uint16_t nb_ports, num, nb_lcores, slave_id = (uint16_t)-1;
	uint16_t nb_rxd = MAX_TRAFFIC_BURST;
	uint16_t nb_txd = MAX_TRAFFIC_BURST;
	uint16_t portid;
	uint16_t nb_rx_queue = 1, nb_tx_queue = 1;
	int socketid = -1;
	int ret;

	printf("Start PMD RXTX cycles cost test.\n");

	signal(SIGUSR1, signal_handler);
	signal(SIGUSR2, signal_handler);

	nb_ports = rte_eth_dev_count_avail();
	if (nb_ports < NB_ETHPORTS_USED) {
		printf("At least %u port(s) used for perf. test\n",
		       NB_ETHPORTS_USED);
		return -1;
	}

	nb_lcores = rte_lcore_count();

	memset(lcore_conf, 0, sizeof(lcore_conf));
	init_lcores();

	init_mbufpool(NB_MBUF);

	if (sc_flag == SC_CONTINUOUS) {
		nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
		nb_txd = RTE_TEST_TX_DESC_DEFAULT;
	}
	printf("CONFIG RXD=%d TXD=%d\n", nb_rxd, nb_txd);

	reset_count();
	num = 0;
	RTE_ETH_FOREACH_DEV(portid) {
		if (socketid == -1) {
			socketid = rte_eth_dev_socket_id(portid);
			slave_id = alloc_lcore(socketid);
			if (slave_id == (uint16_t)-1) {
				printf("No avail lcore to run test\n");
				return -1;
			}
			printf("Performance test runs on lcore %u socket %u\n",
			       slave_id, socketid);
		}

		if (socketid != rte_eth_dev_socket_id(portid)) {
			printf("Skip port %d\n", portid);
			continue;
		}

		/* port configure */
		ret = rte_eth_dev_configure(portid, nb_rx_queue,
					    nb_tx_queue, &port_conf);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
				"Cannot configure device: err=%d, port=%d\n",
				 ret, portid);

		rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
		printf("Port %u ", portid);
		print_ethaddr("Address:", &ports_eth_addr[portid]);
		printf("\n");

		/* tx queue setup */
		ret = rte_eth_tx_queue_setup(portid, 0, nb_txd,
					     socketid, &tx_conf);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
				"rte_eth_tx_queue_setup: err=%d, "
				"port=%d\n", ret, portid);

		/* rx queue steup */
		ret = rte_eth_rx_queue_setup(portid, 0, nb_rxd,
						socketid, &rx_conf,
						mbufpool[socketid]);
		if (ret < 0)
			rte_exit(EXIT_FAILURE, "rte_eth_rx_queue_setup: err=%d,"
				 "port=%d\n", ret, portid);

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

		/* always eanble promiscuous */
		rte_eth_promiscuous_enable(portid);

		lcore_conf[slave_id].portlist[num++] = portid;
		lcore_conf[slave_id].nb_ports++;
	}
	check_all_ports_link_status(nb_ports, RTE_PORT_ALL);

	if (tx_burst == NULL) {
		tx_burst = (struct rte_mbuf **)
			rte_calloc_socket("tx_buff",
					  MAX_TRAFFIC_BURST * nb_ports,
					  sizeof(void *),
					  RTE_CACHE_LINE_SIZE, socketid);
		if (!tx_burst)
			return -1;
	}

	init_traffic(mbufpool[socketid],
		     tx_burst, MAX_TRAFFIC_BURST * nb_ports);

	printf("Generate %d packets @socket %d\n",
	       MAX_TRAFFIC_BURST * nb_ports, socketid);

	if (sc_flag == SC_CONTINUOUS) {
		/* do both rxtx by default */
		if (NULL == do_measure)
			do_measure = measure_rxtx;

		rte_eal_remote_launch(main_loop, NULL, slave_id);

		if (rte_eal_wait_lcore(slave_id) < 0)
			return -1;
	} else if (sc_flag == SC_BURST_POLL_FIRST ||
		   sc_flag == SC_BURST_XMIT_FIRST)
		if (exec_burst(sc_flag, slave_id) < 0)
			return -1;

	/* port tear down */
	RTE_ETH_FOREACH_DEV(portid) {
		if (socketid != rte_eth_dev_socket_id(portid))
			continue;

		rte_eth_dev_stop(portid);
	}

	return 0;
}

int
test_set_rxtx_conf(cmdline_fixed_string_t mode)
{
	printf("mode switch to %s\n", mode);

	if (!strcmp(mode, "vector")) {
		/* vector rx, tx */
		tx_conf.tx_rs_thresh = 32;
		tx_conf.tx_free_thresh = 32;
		return 0;
	} else if (!strcmp(mode, "scalar")) {
		/* bulk alloc rx, full-featured tx */
		tx_conf.tx_rs_thresh = 32;
		tx_conf.tx_free_thresh = 32;
		port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_CHECKSUM;
		return 0;
	} else if (!strcmp(mode, "hybrid")) {
		/* bulk alloc rx, vector tx
		 * when vec macro not define,
		 * using the same rx/tx as scalar
		 */
		tx_conf.tx_rs_thresh = 32;
		tx_conf.tx_free_thresh = 32;
		port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_CHECKSUM;
		return 0;
	} else if (!strcmp(mode, "full")) {
		/* full feature rx,tx pair */
		tx_conf.tx_rs_thresh = 32;
		tx_conf.tx_free_thresh = 32;
		port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_SCATTER;
		return 0;
	}

	return -1;
}

int
test_set_rxtx_anchor(cmdline_fixed_string_t type)
{
	printf("type switch to %s\n", type);

	if (!strcmp(type, "rxtx")) {
		do_measure = measure_rxtx;
		return 0;
	} else if (!strcmp(type, "rxonly")) {
		do_measure = measure_rxonly;
		return 0;
	} else if (!strcmp(type, "txonly")) {
		do_measure = measure_txonly;
		return 0;
	}

	return -1;
}

int
test_set_rxtx_sc(cmdline_fixed_string_t type)
{
	printf("stream control switch to %s\n", type);

	if (!strcmp(type, "continuous")) {
		sc_flag = SC_CONTINUOUS;
		return 0;
	} else if (!strcmp(type, "poll_before_xmit")) {
		sc_flag = SC_BURST_POLL_FIRST;
		return 0;
	} else if (!strcmp(type, "poll_after_xmit")) {
		sc_flag = SC_BURST_XMIT_FIRST;
		return 0;
	}

	return -1;
}

REGISTER_TEST_COMMAND(pmd_perf_autotest, test_pmd_perf);