summaryrefslogtreecommitdiff
path: root/examples/l3fwd/main.c
blob: e4b99efe09ffe4dbd82c2623133c5c40222eb8c8 (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
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
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright(c) 2010-2016 Intel Corporation
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdint.h>
#include <inttypes.h>
#include <sys/types.h>
#include <string.h>
#include <sys/queue.h>
#include <stdarg.h>
#include <errno.h>
#include <getopt.h>
#include <signal.h>
#include <stdbool.h>

#include <rte_common.h>
#include <rte_vect.h>
#include <rte_byteorder.h>
#include <rte_log.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_random.h>
#include <rte_debug.h>
#include <rte_ether.h>
#include <rte_ethdev.h>
#include <rte_mempool.h>
#include <rte_mbuf.h>
#include <rte_ip.h>
#include <rte_tcp.h>
#include <rte_udp.h>
#include <rte_string_fns.h>
#include <rte_cpuflags.h>

#include <cmdline_parse.h>
#include <cmdline_parse_etheraddr.h>

#include "l3fwd.h"

/*
 * Configurable number of RX/TX ring descriptors
 */
#define RTE_TEST_RX_DESC_DEFAULT 1024
#define RTE_TEST_TX_DESC_DEFAULT 1024

#define MAX_TX_QUEUE_PER_PORT RTE_MAX_ETHPORTS
#define MAX_RX_QUEUE_PER_PORT 128

#define MAX_LCORE_PARAMS 1024

/* Static global variables used within this file. */
static uint16_t nb_rxd = RTE_TEST_RX_DESC_DEFAULT;
static uint16_t nb_txd = RTE_TEST_TX_DESC_DEFAULT;

/**< Ports set in promiscuous mode off by default. */
static int promiscuous_on;

/* Select Longest-Prefix or Exact match. */
static int l3fwd_lpm_on;
static int l3fwd_em_on;

static int numa_on = 1; /**< NUMA is enabled by default. */
static int parse_ptype; /**< Parse packet type using rx callback, and */
			/**< disabled by default */

/* Global variables. */

volatile bool force_quit;

/* ethernet addresses of ports */
uint64_t dest_eth_addr[RTE_MAX_ETHPORTS];
struct ether_addr ports_eth_addr[RTE_MAX_ETHPORTS];

xmm_t val_eth[RTE_MAX_ETHPORTS];

/* mask of enabled ports */
uint32_t enabled_port_mask;

/* Used only in exact match mode. */
int ipv6; /**< ipv6 is false by default. */
uint32_t hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT;

struct lcore_conf lcore_conf[RTE_MAX_LCORE];

struct lcore_params {
	uint16_t port_id;
	uint8_t queue_id;
	uint8_t lcore_id;
} __rte_cache_aligned;

static struct lcore_params lcore_params_array[MAX_LCORE_PARAMS];
static struct lcore_params lcore_params_array_default[] = {
	{0, 0, 2},
	{0, 1, 2},
	{0, 2, 2},
	{1, 0, 2},
	{1, 1, 2},
	{1, 2, 2},
	{2, 0, 2},
	{3, 0, 3},
	{3, 1, 3},
};

static struct lcore_params * lcore_params = lcore_params_array_default;
static uint16_t nb_lcore_params = sizeof(lcore_params_array_default) /
				sizeof(lcore_params_array_default[0]);

static struct rte_eth_conf port_conf = {
	.rxmode = {
		.mq_mode = ETH_MQ_RX_RSS,
		.max_rx_pkt_len = ETHER_MAX_LEN,
		.split_hdr_size = 0,
		.offloads = DEV_RX_OFFLOAD_CHECKSUM,
	},
	.rx_adv_conf = {
		.rss_conf = {
			.rss_key = NULL,
			.rss_hf = ETH_RSS_IP,
		},
	},
	.txmode = {
		.mq_mode = ETH_MQ_TX_NONE,
	},
};

static struct rte_mempool * pktmbuf_pool[NB_SOCKETS];

struct l3fwd_lkp_mode {
	void  (*setup)(int);
	int   (*check_ptype)(int);
	rte_rx_callback_fn cb_parse_ptype;
	int   (*main_loop)(void *);
	void* (*get_ipv4_lookup_struct)(int);
	void* (*get_ipv6_lookup_struct)(int);
};

static struct l3fwd_lkp_mode l3fwd_lkp;

static struct l3fwd_lkp_mode l3fwd_em_lkp = {
	.setup                  = setup_hash,
	.check_ptype		= em_check_ptype,
	.cb_parse_ptype		= em_cb_parse_ptype,
	.main_loop              = em_main_loop,
	.get_ipv4_lookup_struct = em_get_ipv4_l3fwd_lookup_struct,
	.get_ipv6_lookup_struct = em_get_ipv6_l3fwd_lookup_struct,
};

static struct l3fwd_lkp_mode l3fwd_lpm_lkp = {
	.setup                  = setup_lpm,
	.check_ptype		= lpm_check_ptype,
	.cb_parse_ptype		= lpm_cb_parse_ptype,
	.main_loop              = lpm_main_loop,
	.get_ipv4_lookup_struct = lpm_get_ipv4_l3fwd_lookup_struct,
	.get_ipv6_lookup_struct = lpm_get_ipv6_l3fwd_lookup_struct,
};

/*
 * Setup lookup methods for forwarding.
 * Currently exact-match and longest-prefix-match
 * are supported ones.
 */
static void
setup_l3fwd_lookup_tables(void)
{
	/* Setup HASH lookup functions. */
	if (l3fwd_em_on)
		l3fwd_lkp = l3fwd_em_lkp;
	/* Setup LPM lookup functions. */
	else
		l3fwd_lkp = l3fwd_lpm_lkp;
}

static int
check_lcore_params(void)
{
	uint8_t queue, lcore;
	uint16_t i;
	int socketid;

	for (i = 0; i < nb_lcore_params; ++i) {
		queue = lcore_params[i].queue_id;
		if (queue >= MAX_RX_QUEUE_PER_PORT) {
			printf("invalid queue number: %hhu\n", queue);
			return -1;
		}
		lcore = lcore_params[i].lcore_id;
		if (!rte_lcore_is_enabled(lcore)) {
			printf("error: lcore %hhu is not enabled in lcore mask\n", lcore);
			return -1;
		}
		if ((socketid = rte_lcore_to_socket_id(lcore) != 0) &&
			(numa_on == 0)) {
			printf("warning: lcore %hhu is on socket %d with numa off \n",
				lcore, socketid);
		}
	}
	return 0;
}

static int
check_port_config(void)
{
	uint16_t portid;
	uint16_t i;

	for (i = 0; i < nb_lcore_params; ++i) {
		portid = lcore_params[i].port_id;
		if ((enabled_port_mask & (1 << portid)) == 0) {
			printf("port %u is not enabled in port mask\n", portid);
			return -1;
		}
		if (!rte_eth_dev_is_valid_port(portid)) {
			printf("port %u is not present on the board\n", portid);
			return -1;
		}
	}
	return 0;
}

static uint8_t
get_port_n_rx_queues(const uint16_t port)
{
	int queue = -1;
	uint16_t i;

	for (i = 0; i < nb_lcore_params; ++i) {
		if (lcore_params[i].port_id == port) {
			if (lcore_params[i].queue_id == queue+1)
				queue = lcore_params[i].queue_id;
			else
				rte_exit(EXIT_FAILURE, "queue ids of the port %d must be"
						" in sequence and must start with 0\n",
						lcore_params[i].port_id);
		}
	}
	return (uint8_t)(++queue);
}

static int
init_lcore_rx_queues(void)
{
	uint16_t i, nb_rx_queue;
	uint8_t lcore;

	for (i = 0; i < nb_lcore_params; ++i) {
		lcore = lcore_params[i].lcore_id;
		nb_rx_queue = lcore_conf[lcore].n_rx_queue;
		if (nb_rx_queue >= MAX_RX_QUEUE_PER_LCORE) {
			printf("error: too many queues (%u) for lcore: %u\n",
				(unsigned)nb_rx_queue + 1, (unsigned)lcore);
			return -1;
		} else {
			lcore_conf[lcore].rx_queue_list[nb_rx_queue].port_id =
				lcore_params[i].port_id;
			lcore_conf[lcore].rx_queue_list[nb_rx_queue].queue_id =
				lcore_params[i].queue_id;
			lcore_conf[lcore].n_rx_queue++;
		}
	}
	return 0;
}

/* display usage */
static void
print_usage(const char *prgname)
{
	fprintf(stderr, "%s [EAL options] --"
		" -p PORTMASK"
		" [-P]"
		" [-E]"
		" [-L]"
		" --config (port,queue,lcore)[,(port,queue,lcore)]"
		" [--eth-dest=X,MM:MM:MM:MM:MM:MM]"
		" [--enable-jumbo [--max-pkt-len PKTLEN]]"
		" [--no-numa]"
		" [--hash-entry-num]"
		" [--ipv6]"
		" [--parse-ptype]\n\n"

		"  -p PORTMASK: Hexadecimal bitmask of ports to configure\n"
		"  -P : Enable promiscuous mode\n"
		"  -E : Enable exact match\n"
		"  -L : Enable longest prefix match (default)\n"
		"  --config (port,queue,lcore): Rx queue configuration\n"
		"  --eth-dest=X,MM:MM:MM:MM:MM:MM: Ethernet destination for port X\n"
		"  --enable-jumbo: Enable jumbo frames\n"
		"  --max-pkt-len: Under the premise of enabling jumbo,\n"
		"                 maximum packet length in decimal (64-9600)\n"
		"  --no-numa: Disable numa awareness\n"
		"  --hash-entry-num: Specify the hash entry number in hexadecimal to be setup\n"
		"  --ipv6: Set if running ipv6 packets\n"
		"  --parse-ptype: Set to use software to analyze packet type\n\n",
		prgname);
}

static int
parse_max_pkt_len(const char *pktlen)
{
	char *end = NULL;
	unsigned long len;

	/* parse decimal string */
	len = strtoul(pktlen, &end, 10);
	if ((pktlen[0] == '\0') || (end == NULL) || (*end != '\0'))
		return -1;

	if (len == 0)
		return -1;

	return len;
}

static int
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 int
parse_hash_entry_number(const char *hash_entry_num)
{
	char *end = NULL;
	unsigned long hash_en;
	/* parse hexadecimal string */
	hash_en = strtoul(hash_entry_num, &end, 16);
	if ((hash_entry_num[0] == '\0') || (end == NULL) || (*end != '\0'))
		return -1;

	if (hash_en == 0)
		return -1;

	return hash_en;
}

static int
parse_config(const char *q_arg)
{
	char s[256];
	const char *p, *p0 = q_arg;
	char *end;
	enum fieldnames {
		FLD_PORT = 0,
		FLD_QUEUE,
		FLD_LCORE,
		_NUM_FLD
	};
	unsigned long int_fld[_NUM_FLD];
	char *str_fld[_NUM_FLD];
	int i;
	unsigned size;

	nb_lcore_params = 0;

	while ((p = strchr(p0,'(')) != NULL) {
		++p;
		if((p0 = strchr(p,')')) == NULL)
			return -1;

		size = p0 - p;
		if(size >= sizeof(s))
			return -1;

		snprintf(s, sizeof(s), "%.*s", size, p);
		if (rte_strsplit(s, sizeof(s), str_fld, _NUM_FLD, ',') != _NUM_FLD)
			return -1;
		for (i = 0; i < _NUM_FLD; i++){
			errno = 0;
			int_fld[i] = strtoul(str_fld[i], &end, 0);
			if (errno != 0 || end == str_fld[i] || int_fld[i] > 255)
				return -1;
		}
		if (nb_lcore_params >= MAX_LCORE_PARAMS) {
			printf("exceeded max number of lcore params: %hu\n",
				nb_lcore_params);
			return -1;
		}
		lcore_params_array[nb_lcore_params].port_id =
			(uint8_t)int_fld[FLD_PORT];
		lcore_params_array[nb_lcore_params].queue_id =
			(uint8_t)int_fld[FLD_QUEUE];
		lcore_params_array[nb_lcore_params].lcore_id =
			(uint8_t)int_fld[FLD_LCORE];
		++nb_lcore_params;
	}
	lcore_params = lcore_params_array;
	return 0;
}

static void
parse_eth_dest(const char *optarg)
{
	uint16_t portid;
	char *port_end;
	uint8_t c, *dest, peer_addr[6];

	errno = 0;
	portid = strtoul(optarg, &port_end, 10);
	if (errno != 0 || port_end == optarg || *port_end++ != ',')
		rte_exit(EXIT_FAILURE,
		"Invalid eth-dest: %s", optarg);
	if (portid >= RTE_MAX_ETHPORTS)
		rte_exit(EXIT_FAILURE,
		"eth-dest: port %d >= RTE_MAX_ETHPORTS(%d)\n",
		portid, RTE_MAX_ETHPORTS);

	if (cmdline_parse_etheraddr(NULL, port_end,
		&peer_addr, sizeof(peer_addr)) < 0)
		rte_exit(EXIT_FAILURE,
		"Invalid ethernet address: %s\n",
		port_end);
	dest = (uint8_t *)&dest_eth_addr[portid];
	for (c = 0; c < 6; c++)
		dest[c] = peer_addr[c];
	*(uint64_t *)(val_eth + portid) = dest_eth_addr[portid];
}

#define MAX_JUMBO_PKT_LEN  9600
#define MEMPOOL_CACHE_SIZE 256

static const char short_options[] =
	"p:"  /* portmask */
	"P"   /* promiscuous */
	"L"   /* enable long prefix match */
	"E"   /* enable exact match */
	;

#define CMD_LINE_OPT_CONFIG "config"
#define CMD_LINE_OPT_ETH_DEST "eth-dest"
#define CMD_LINE_OPT_NO_NUMA "no-numa"
#define CMD_LINE_OPT_IPV6 "ipv6"
#define CMD_LINE_OPT_ENABLE_JUMBO "enable-jumbo"
#define CMD_LINE_OPT_HASH_ENTRY_NUM "hash-entry-num"
#define CMD_LINE_OPT_PARSE_PTYPE "parse-ptype"
enum {
	/* long options mapped to a short option */

	/* first long only option value must be >= 256, so that we won't
	 * conflict with short options */
	CMD_LINE_OPT_MIN_NUM = 256,
	CMD_LINE_OPT_CONFIG_NUM,
	CMD_LINE_OPT_ETH_DEST_NUM,
	CMD_LINE_OPT_NO_NUMA_NUM,
	CMD_LINE_OPT_IPV6_NUM,
	CMD_LINE_OPT_ENABLE_JUMBO_NUM,
	CMD_LINE_OPT_HASH_ENTRY_NUM_NUM,
	CMD_LINE_OPT_PARSE_PTYPE_NUM,
};

static const struct option lgopts[] = {
	{CMD_LINE_OPT_CONFIG, 1, 0, CMD_LINE_OPT_CONFIG_NUM},
	{CMD_LINE_OPT_ETH_DEST, 1, 0, CMD_LINE_OPT_ETH_DEST_NUM},
	{CMD_LINE_OPT_NO_NUMA, 0, 0, CMD_LINE_OPT_NO_NUMA_NUM},
	{CMD_LINE_OPT_IPV6, 0, 0, CMD_LINE_OPT_IPV6_NUM},
	{CMD_LINE_OPT_ENABLE_JUMBO, 0, 0, CMD_LINE_OPT_ENABLE_JUMBO_NUM},
	{CMD_LINE_OPT_HASH_ENTRY_NUM, 1, 0, CMD_LINE_OPT_HASH_ENTRY_NUM_NUM},
	{CMD_LINE_OPT_PARSE_PTYPE, 0, 0, CMD_LINE_OPT_PARSE_PTYPE_NUM},
	{NULL, 0, 0, 0}
};

/*
 * This expression is used to calculate the number of mbufs needed
 * depending on user input, taking  into account memory for rx and
 * tx hardware rings, cache per lcore and mtable per port per lcore.
 * RTE_MAX is used to ensure that NB_MBUF never goes below a minimum
 * value of 8192
 */
#define NB_MBUF RTE_MAX(	\
	(nb_ports*nb_rx_queue*nb_rxd +		\
	nb_ports*nb_lcores*MAX_PKT_BURST +	\
	nb_ports*n_tx_queue*nb_txd +		\
	nb_lcores*MEMPOOL_CACHE_SIZE),		\
	(unsigned)8192)

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

	argvopt = argv;

	/* Error or normal output strings. */
	while ((opt = getopt_long(argc, argvopt, short_options,
				lgopts, &option_index)) != EOF) {

		switch (opt) {
		/* portmask */
		case 'p':
			enabled_port_mask = parse_portmask(optarg);
			if (enabled_port_mask == 0) {
				fprintf(stderr, "Invalid portmask\n");
				print_usage(prgname);
				return -1;
			}
			break;

		case 'P':
			promiscuous_on = 1;
			break;

		case 'E':
			l3fwd_em_on = 1;
			break;

		case 'L':
			l3fwd_lpm_on = 1;
			break;

		/* long options */
		case CMD_LINE_OPT_CONFIG_NUM:
			ret = parse_config(optarg);
			if (ret) {
				fprintf(stderr, "Invalid config\n");
				print_usage(prgname);
				return -1;
			}
			break;

		case CMD_LINE_OPT_ETH_DEST_NUM:
			parse_eth_dest(optarg);
			break;

		case CMD_LINE_OPT_NO_NUMA_NUM:
			numa_on = 0;
			break;

		case CMD_LINE_OPT_IPV6_NUM:
			ipv6 = 1;
			break;

		case CMD_LINE_OPT_ENABLE_JUMBO_NUM: {
			const struct option lenopts = {
				"max-pkt-len", required_argument, 0, 0
			};

			port_conf.rxmode.offloads |= DEV_RX_OFFLOAD_JUMBO_FRAME;
			port_conf.txmode.offloads |= DEV_TX_OFFLOAD_MULTI_SEGS;

			/*
			 * if no max-pkt-len set, use the default
			 * value ETHER_MAX_LEN.
			 */
			if (getopt_long(argc, argvopt, "",
					&lenopts, &option_index) == 0) {
				ret = parse_max_pkt_len(optarg);
				if (ret < 64 || ret > MAX_JUMBO_PKT_LEN) {
					fprintf(stderr,
						"invalid maximum packet length\n");
					print_usage(prgname);
					return -1;
				}
				port_conf.rxmode.max_rx_pkt_len = ret;
			}
			break;
		}

		case CMD_LINE_OPT_HASH_ENTRY_NUM_NUM:
			ret = parse_hash_entry_number(optarg);
			if ((ret > 0) && (ret <= L3FWD_HASH_ENTRIES)) {
				hash_entry_number = ret;
			} else {
				fprintf(stderr, "invalid hash entry number\n");
				print_usage(prgname);
				return -1;
			}
			break;

		case CMD_LINE_OPT_PARSE_PTYPE_NUM:
			printf("soft parse-ptype is enabled\n");
			parse_ptype = 1;
			break;

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

	/* If both LPM and EM are selected, return error. */
	if (l3fwd_lpm_on && l3fwd_em_on) {
		fprintf(stderr, "LPM and EM are mutually exclusive, select only one\n");
		return -1;
	}

	/*
	 * Nothing is selected, pick longest-prefix match
	 * as default match.
	 */
	if (!l3fwd_lpm_on && !l3fwd_em_on) {
		fprintf(stderr, "LPM or EM none selected, default LPM on\n");
		l3fwd_lpm_on = 1;
	}

	/*
	 * ipv6 and hash flags are valid only for
	 * exact macth, reset them to default for
	 * longest-prefix match.
	 */
	if (l3fwd_lpm_on) {
		ipv6 = 0;
		hash_entry_number = HASH_ENTRY_NUMBER_DEFAULT;
	}

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

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

static void
print_ethaddr(const char *name, const struct 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_mem(unsigned nb_mbuf)
{
	struct lcore_conf *qconf;
	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;

		if (numa_on)
			socketid = rte_lcore_to_socket_id(lcore_id);
		else
			socketid = 0;

		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 (pktmbuf_pool[socketid] == NULL) {
			snprintf(s, sizeof(s), "mbuf_pool_%d", socketid);
			pktmbuf_pool[socketid] =
				rte_pktmbuf_pool_create(s, nb_mbuf,
					MEMPOOL_CACHE_SIZE, 0,
					RTE_MBUF_DEFAULT_BUF_SIZE, socketid);
			if (pktmbuf_pool[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);

			/* Setup either LPM or EM(f.e Hash).  */
			l3fwd_lkp.setup(socketid);
		}
		qconf = &lcore_conf[lcore_id];
		qconf->ipv4_lookup_struct =
			l3fwd_lkp.get_ipv4_lookup_struct(socketid);
		qconf->ipv6_lookup_struct =
			l3fwd_lkp.get_ipv6_lookup_struct(socketid);
	}
	return 0;
}

/* Check the link status of all ports in up to 9s, and print them finally */
static void
check_all_ports_link_status(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++) {
		if (force_quit)
			return;
		all_ports_up = 1;
		RTE_ETH_FOREACH_DEV(portid) {
			if (force_quit)
				return;
			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");
		}
	}
}

static void
signal_handler(int signum)
{
	if (signum == SIGINT || signum == SIGTERM) {
		printf("\n\nSignal %d received, preparing to exit...\n",
				signum);
		force_quit = true;
	}
}

static int
prepare_ptype_parser(uint16_t portid, uint16_t queueid)
{
	if (parse_ptype) {
		printf("Port %d: softly parse packet type info\n", portid);
		if (rte_eth_add_rx_callback(portid, queueid,
					    l3fwd_lkp.cb_parse_ptype,
					    NULL))
			return 1;

		printf("Failed to add rx callback: port=%d\n", portid);
		return 0;
	}

	if (l3fwd_lkp.check_ptype(portid))
		return 1;

	printf("port %d cannot parse packet type, please add --%s\n",
	       portid, CMD_LINE_OPT_PARSE_PTYPE);
	return 0;
}

int
main(int argc, char **argv)
{
	struct lcore_conf *qconf;
	struct rte_eth_dev_info dev_info;
	struct rte_eth_txconf *txconf;
	int ret;
	unsigned nb_ports;
	uint16_t queueid, portid;
	unsigned lcore_id;
	uint32_t n_tx_queue, nb_lcores;
	uint8_t nb_rx_queue, queue, socketid;

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

	force_quit = false;
	signal(SIGINT, signal_handler);
	signal(SIGTERM, signal_handler);

	/* pre-init dst MACs for all ports to 02:00:00:00:00:xx */
	for (portid = 0; portid < RTE_MAX_ETHPORTS; portid++) {
		dest_eth_addr[portid] =
			ETHER_LOCAL_ADMIN_ADDR + ((uint64_t)portid << 40);
		*(uint64_t *)(val_eth + portid) = dest_eth_addr[portid];
	}

	/* parse application arguments (after the EAL ones) */
	ret = parse_args(argc, argv);
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "Invalid L3FWD parameters\n");

	if (check_lcore_params() < 0)
		rte_exit(EXIT_FAILURE, "check_lcore_params failed\n");

	ret = init_lcore_rx_queues();
	if (ret < 0)
		rte_exit(EXIT_FAILURE, "init_lcore_rx_queues failed\n");

	nb_ports = rte_eth_dev_count_avail();

	if (check_port_config() < 0)
		rte_exit(EXIT_FAILURE, "check_port_config failed\n");

	nb_lcores = rte_lcore_count();

	/* Setup function pointers for lookup method. */
	setup_l3fwd_lookup_tables();

	/* initialize all ports */
	RTE_ETH_FOREACH_DEV(portid) {
		struct rte_eth_conf local_port_conf = port_conf;

		/* skip ports that are not enabled */
		if ((enabled_port_mask & (1 << portid)) == 0) {
			printf("\nSkipping disabled port %d\n", portid);
			continue;
		}

		/* init port */
		printf("Initializing port %d ... ", portid );
		fflush(stdout);

		nb_rx_queue = get_port_n_rx_queues(portid);
		n_tx_queue = nb_lcores;
		if (n_tx_queue > MAX_TX_QUEUE_PER_PORT)
			n_tx_queue = MAX_TX_QUEUE_PER_PORT;
		printf("Creating queues: nb_rxq=%d nb_txq=%u... ",
			nb_rx_queue, (unsigned)n_tx_queue );

		rte_eth_dev_info_get(portid, &dev_info);
		if (dev_info.tx_offload_capa & DEV_TX_OFFLOAD_MBUF_FAST_FREE)
			local_port_conf.txmode.offloads |=
				DEV_TX_OFFLOAD_MBUF_FAST_FREE;

		local_port_conf.rx_adv_conf.rss_conf.rss_hf &=
			dev_info.flow_type_rss_offloads;
		if (local_port_conf.rx_adv_conf.rss_conf.rss_hf !=
				port_conf.rx_adv_conf.rss_conf.rss_hf) {
			printf("Port %u modified RSS hash function based on hardware support,"
				"requested:%#"PRIx64" configured:%#"PRIx64"\n",
				portid,
				port_conf.rx_adv_conf.rss_conf.rss_hf,
				local_port_conf.rx_adv_conf.rss_conf.rss_hf);
		}

		ret = rte_eth_dev_configure(portid, nb_rx_queue,
					(uint16_t)n_tx_queue, &local_port_conf);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
				"Cannot configure device: err=%d, port=%d\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=%d\n", ret, portid);

		rte_eth_macaddr_get(portid, &ports_eth_addr[portid]);
		print_ethaddr(" Address:", &ports_eth_addr[portid]);
		printf(", ");
		print_ethaddr("Destination:",
			(const struct ether_addr *)&dest_eth_addr[portid]);
		printf(", ");

		/*
		 * prepare src MACs for each port.
		 */
		ether_addr_copy(&ports_eth_addr[portid],
			(struct ether_addr *)(val_eth + portid) + 1);

		/* init memory */
		ret = init_mem(NB_MBUF);
		if (ret < 0)
			rte_exit(EXIT_FAILURE, "init_mem failed\n");

		/* init one TX queue per couple (lcore,port) */
		queueid = 0;
		for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
			if (rte_lcore_is_enabled(lcore_id) == 0)
				continue;

			if (numa_on)
				socketid =
				(uint8_t)rte_lcore_to_socket_id(lcore_id);
			else
				socketid = 0;

			printf("txq=%u,%d,%d ", lcore_id, queueid, socketid);
			fflush(stdout);

			txconf = &dev_info.default_txconf;
			txconf->offloads = local_port_conf.txmode.offloads;
			ret = rte_eth_tx_queue_setup(portid, queueid, nb_txd,
						     socketid, txconf);
			if (ret < 0)
				rte_exit(EXIT_FAILURE,
					"rte_eth_tx_queue_setup: err=%d, "
					"port=%d\n", ret, portid);

			qconf = &lcore_conf[lcore_id];
			qconf->tx_queue_id[portid] = queueid;
			queueid++;

			qconf->tx_port_id[qconf->n_tx_port] = portid;
			qconf->n_tx_port++;
		}
		printf("\n");
	}

	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
		if (rte_lcore_is_enabled(lcore_id) == 0)
			continue;
		qconf = &lcore_conf[lcore_id];
		printf("\nInitializing rx queues on lcore %u ... ", lcore_id );
		fflush(stdout);
		/* init RX queues */
		for(queue = 0; queue < qconf->n_rx_queue; ++queue) {
			struct rte_eth_dev *dev;
			struct rte_eth_conf *conf;
			struct rte_eth_rxconf rxq_conf;

			portid = qconf->rx_queue_list[queue].port_id;
			queueid = qconf->rx_queue_list[queue].queue_id;
			dev = &rte_eth_devices[portid];
			conf = &dev->data->dev_conf;

			if (numa_on)
				socketid =
				(uint8_t)rte_lcore_to_socket_id(lcore_id);
			else
				socketid = 0;

			printf("rxq=%d,%d,%d ", portid, queueid, socketid);
			fflush(stdout);

			rte_eth_dev_info_get(portid, &dev_info);
			rxq_conf = dev_info.default_rxconf;
			rxq_conf.offloads = conf->rxmode.offloads;
			ret = rte_eth_rx_queue_setup(portid, queueid, nb_rxd,
					socketid,
					&rxq_conf,
					pktmbuf_pool[socketid]);
			if (ret < 0)
				rte_exit(EXIT_FAILURE,
				"rte_eth_rx_queue_setup: err=%d, port=%d\n",
				ret, portid);
		}
	}

	printf("\n");

	/* start ports */
	RTE_ETH_FOREACH_DEV(portid) {
		if ((enabled_port_mask & (1 << portid)) == 0) {
			continue;
		}
		/* Start device */
		ret = rte_eth_dev_start(portid);
		if (ret < 0)
			rte_exit(EXIT_FAILURE,
				"rte_eth_dev_start: err=%d, port=%d\n",
				ret, portid);

		/*
		 * If enabled, put device in promiscuous mode.
		 * This allows IO forwarding mode to forward packets
		 * to itself through 2 cross-connected  ports of the
		 * target machine.
		 */
		if (promiscuous_on)
			rte_eth_promiscuous_enable(portid);
	}

	printf("\n");

	for (lcore_id = 0; lcore_id < RTE_MAX_LCORE; lcore_id++) {
		if (rte_lcore_is_enabled(lcore_id) == 0)
			continue;
		qconf = &lcore_conf[lcore_id];
		for (queue = 0; queue < qconf->n_rx_queue; ++queue) {
			portid = qconf->rx_queue_list[queue].port_id;
			queueid = qconf->rx_queue_list[queue].queue_id;
			if (prepare_ptype_parser(portid, queueid) == 0)
				rte_exit(EXIT_FAILURE, "ptype check fails\n");
		}
	}


	check_all_ports_link_status(enabled_port_mask);

	ret = 0;
	/* launch per-lcore init on every lcore */
	rte_eal_mp_remote_launch(l3fwd_lkp.main_loop, NULL, CALL_MASTER);
	RTE_LCORE_FOREACH_SLAVE(lcore_id) {
		if (rte_eal_wait_lcore(lcore_id) < 0) {
			ret = -1;
			break;
		}
	}

	/* stop ports */
	RTE_ETH_FOREACH_DEV(portid) {
		if ((enabled_port_mask & (1 << portid)) == 0)
			continue;
		printf("Closing port %d...", portid);
		rte_eth_dev_stop(portid);
		rte_eth_dev_close(portid);
		printf(" Done\n");
	}
	printf("Bye...\n");

	return ret;
}