summaryrefslogtreecommitdiffstats
path: root/lib/librte_pdump/rte_pdump.c
blob: 729e79a3606250eecb327ea4dc33f83647e0ecc2 (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
/*-
 *   BSD LICENSE
 *
 *   Copyright(c) 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 <sys/socket.h>
#include <sys/un.h>
#include <sys/stat.h>
#include <unistd.h>
#include <sys/types.h>
#include <pthread.h>
#include <stdbool.h>
#include <stdio.h>

#include <rte_memcpy.h>
#include <rte_mbuf.h>
#include <rte_ethdev.h>
#include <rte_lcore.h>
#include <rte_log.h>
#include <rte_errno.h>

#include "rte_pdump.h"

#define SOCKET_PATH_VAR_RUN "/var/run"
#define SOCKET_PATH_HOME "HOME"
#define DPDK_DIR         "/.dpdk"
#define SOCKET_DIR       "/pdump_sockets"
#define SERVER_SOCKET "%s/pdump_server_socket"
#define CLIENT_SOCKET "%s/pdump_client_socket_%d_%u"
#define DEVICE_ID_SIZE 64
/* Macros for printing using RTE_LOG */
#define RTE_LOGTYPE_PDUMP RTE_LOGTYPE_USER1

enum pdump_operation {
	DISABLE = 1,
	ENABLE = 2
};

enum pdump_version {
	V1 = 1
};

static pthread_t pdump_thread;
static int pdump_socket_fd;
static char server_socket_dir[PATH_MAX];
static char client_socket_dir[PATH_MAX];

struct pdump_request {
	uint16_t ver;
	uint16_t op;
	uint32_t flags;
	union pdump_data {
		struct enable_v1 {
			char device[DEVICE_ID_SIZE];
			uint16_t queue;
			struct rte_ring *ring;
			struct rte_mempool *mp;
			void *filter;
		} en_v1;
		struct disable_v1 {
			char device[DEVICE_ID_SIZE];
			uint16_t queue;
			struct rte_ring *ring;
			struct rte_mempool *mp;
			void *filter;
		} dis_v1;
	} data;
};

struct pdump_response {
	uint16_t ver;
	uint16_t res_op;
	int32_t err_value;
};

static struct pdump_rxtx_cbs {
	struct rte_ring *ring;
	struct rte_mempool *mp;
	struct rte_eth_rxtx_callback *cb;
	void *filter;
} rx_cbs[RTE_MAX_ETHPORTS][RTE_MAX_QUEUES_PER_PORT],
tx_cbs[RTE_MAX_ETHPORTS][RTE_MAX_QUEUES_PER_PORT];

static inline int
pdump_pktmbuf_copy_data(struct rte_mbuf *seg, const struct rte_mbuf *m)
{
	if (rte_pktmbuf_tailroom(seg) < m->data_len) {
		RTE_LOG(ERR, PDUMP,
			"User mempool: insufficient data_len of mbuf\n");
		return -EINVAL;
	}

	seg->port = m->port;
	seg->vlan_tci = m->vlan_tci;
	seg->hash = m->hash;
	seg->tx_offload = m->tx_offload;
	seg->ol_flags = m->ol_flags;
	seg->packet_type = m->packet_type;
	seg->vlan_tci_outer = m->vlan_tci_outer;
	seg->data_len = m->data_len;
	seg->pkt_len = seg->data_len;
	rte_memcpy(rte_pktmbuf_mtod(seg, void *),
			rte_pktmbuf_mtod(m, void *),
			rte_pktmbuf_data_len(seg));

	return 0;
}

static inline struct rte_mbuf *
pdump_pktmbuf_copy(struct rte_mbuf *m, struct rte_mempool *mp)
{
	struct rte_mbuf *m_dup, *seg, **prev;
	uint32_t pktlen;
	uint8_t nseg;

	m_dup = rte_pktmbuf_alloc(mp);
	if (unlikely(m_dup == NULL))
		return NULL;

	seg = m_dup;
	prev = &seg->next;
	pktlen = m->pkt_len;
	nseg = 0;

	do {
		nseg++;
		if (pdump_pktmbuf_copy_data(seg, m) < 0) {
			rte_pktmbuf_free(m_dup);
			return NULL;
		}
		*prev = seg;
		prev = &seg->next;
	} while ((m = m->next) != NULL &&
			(seg = rte_pktmbuf_alloc(mp)) != NULL);

	*prev = NULL;
	m_dup->nb_segs = nseg;
	m_dup->pkt_len = pktlen;

	/* Allocation of new indirect segment failed */
	if (unlikely(seg == NULL)) {
		rte_pktmbuf_free(m_dup);
		return NULL;
	}

	__rte_mbuf_sanity_check(m_dup, 1);
	return m_dup;
}

static inline void
pdump_copy(struct rte_mbuf **pkts, uint16_t nb_pkts, void *user_params)
{
	unsigned i;
	int ring_enq;
	uint16_t d_pkts = 0;
	struct rte_mbuf *dup_bufs[nb_pkts];
	struct pdump_rxtx_cbs *cbs;
	struct rte_ring *ring;
	struct rte_mempool *mp;
	struct rte_mbuf *p;

	cbs  = user_params;
	ring = cbs->ring;
	mp = cbs->mp;
	for (i = 0; i < nb_pkts; i++) {
		p = pdump_pktmbuf_copy(pkts[i], mp);
		if (p)
			dup_bufs[d_pkts++] = p;
	}

	ring_enq = rte_ring_enqueue_burst(ring, (void *)dup_bufs, d_pkts, NULL);
	if (unlikely(ring_enq < d_pkts)) {
		RTE_LOG(DEBUG, PDUMP,
			"only %d of packets enqueued to ring\n", ring_enq);
		do {
			rte_pktmbuf_free(dup_bufs[ring_enq]);
		} while (++ring_enq < d_pkts);
	}
}

static uint16_t
pdump_rx(uint8_t port __rte_unused, uint16_t qidx __rte_unused,
	struct rte_mbuf **pkts, uint16_t nb_pkts,
	uint16_t max_pkts __rte_unused,
	void *user_params)
{
	pdump_copy(pkts, nb_pkts, user_params);
	return nb_pkts;
}

static uint16_t
pdump_tx(uint8_t port __rte_unused, uint16_t qidx __rte_unused,
		struct rte_mbuf **pkts, uint16_t nb_pkts, void *user_params)
{
	pdump_copy(pkts, nb_pkts, user_params);
	return nb_pkts;
}

static int
pdump_regitser_rx_callbacks(uint16_t end_q, uint8_t port, uint16_t queue,
				struct rte_ring *ring, struct rte_mempool *mp,
				uint16_t operation)
{
	uint16_t qid;
	struct pdump_rxtx_cbs *cbs = NULL;

	qid = (queue == RTE_PDUMP_ALL_QUEUES) ? 0 : queue;
	for (; qid < end_q; qid++) {
		cbs = &rx_cbs[port][qid];
		if (cbs && operation == ENABLE) {
			if (cbs->cb) {
				RTE_LOG(ERR, PDUMP,
					"failed to add rx callback for port=%d "
					"and queue=%d, callback already exists\n",
					port, qid);
				return -EEXIST;
			}
			cbs->ring = ring;
			cbs->mp = mp;
			cbs->cb = rte_eth_add_first_rx_callback(port, qid,
								pdump_rx, cbs);
			if (cbs->cb == NULL) {
				RTE_LOG(ERR, PDUMP,
					"failed to add rx callback, errno=%d\n",
					rte_errno);
				return rte_errno;
			}
		}
		if (cbs && operation == DISABLE) {
			int ret;

			if (cbs->cb == NULL) {
				RTE_LOG(ERR, PDUMP,
					"failed to delete non existing rx "
					"callback for port=%d and queue=%d\n",
					port, qid);
				return -EINVAL;
			}
			ret = rte_eth_remove_rx_callback(port, qid, cbs->cb);
			if (ret < 0) {
				RTE_LOG(ERR, PDUMP,
					"failed to remove rx callback, errno=%d\n",
					-ret);
				return ret;
			}
			cbs->cb = NULL;
		}
	}

	return 0;
}

static int
pdump_regitser_tx_callbacks(uint16_t end_q, uint8_t port, uint16_t queue,
				struct rte_ring *ring, struct rte_mempool *mp,
				uint16_t operation)
{

	uint16_t qid;
	struct pdump_rxtx_cbs *cbs = NULL;

	qid = (queue == RTE_PDUMP_ALL_QUEUES) ? 0 : queue;
	for (; qid < end_q; qid++) {
		cbs = &tx_cbs[port][qid];
		if (cbs && operation == ENABLE) {
			if (cbs->cb) {
				RTE_LOG(ERR, PDUMP,
					"failed to add tx callback for port=%d "
					"and queue=%d, callback already exists\n",
					port, qid);
				return -EEXIST;
			}
			cbs->ring = ring;
			cbs->mp = mp;
			cbs->cb = rte_eth_add_tx_callback(port, qid, pdump_tx,
								cbs);
			if (cbs->cb == NULL) {
				RTE_LOG(ERR, PDUMP,
					"failed to add tx callback, errno=%d\n",
					rte_errno);
				return rte_errno;
			}
		}
		if (cbs && operation == DISABLE) {
			int ret;

			if (cbs->cb == NULL) {
				RTE_LOG(ERR, PDUMP,
					"failed to delete non existing tx "
					"callback for port=%d and queue=%d\n",
					port, qid);
				return -EINVAL;
			}
			ret = rte_eth_remove_tx_callback(port, qid, cbs->cb);
			if (ret < 0) {
				RTE_LOG(ERR, PDUMP,
					"failed to remove tx callback, errno=%d\n",
					-ret);
				return ret;
			}
			cbs->cb = NULL;
		}
	}

	return 0;
}

static int
set_pdump_rxtx_cbs(struct pdump_request *p)
{
	uint16_t nb_rx_q = 0, nb_tx_q = 0, end_q, queue;
	uint8_t port;
	int ret = 0;
	uint32_t flags;
	uint16_t operation;
	struct rte_ring *ring;
	struct rte_mempool *mp;

	flags = p->flags;
	operation = p->op;
	if (operation == ENABLE) {
		ret = rte_eth_dev_get_port_by_name(p->data.en_v1.device,
				&port);
		if (ret < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to get potid for device id=%s\n",
				p->data.en_v1.device);
			return -EINVAL;
		}
		queue = p->data.en_v1.queue;
		ring = p->data.en_v1.ring;
		mp = p->data.en_v1.mp;
	} else {
		ret = rte_eth_dev_get_port_by_name(p->data.dis_v1.device,
				&port);
		if (ret < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to get potid for device id=%s\n",
				p->data.dis_v1.device);
			return -EINVAL;
		}
		queue = p->data.dis_v1.queue;
		ring = p->data.dis_v1.ring;
		mp = p->data.dis_v1.mp;
	}

	/* validation if packet capture is for all queues */
	if (queue == RTE_PDUMP_ALL_QUEUES) {
		struct rte_eth_dev_info dev_info;

		rte_eth_dev_info_get(port, &dev_info);
		nb_rx_q = dev_info.nb_rx_queues;
		nb_tx_q = dev_info.nb_tx_queues;
		if (nb_rx_q == 0 && flags & RTE_PDUMP_FLAG_RX) {
			RTE_LOG(ERR, PDUMP,
				"number of rx queues cannot be 0\n");
			return -EINVAL;
		}
		if (nb_tx_q == 0 && flags & RTE_PDUMP_FLAG_TX) {
			RTE_LOG(ERR, PDUMP,
				"number of tx queues cannot be 0\n");
			return -EINVAL;
		}
		if ((nb_tx_q == 0 || nb_rx_q == 0) &&
			flags == RTE_PDUMP_FLAG_RXTX) {
			RTE_LOG(ERR, PDUMP,
				"both tx&rx queues must be non zero\n");
			return -EINVAL;
		}
	}

	/* register RX callback */
	if (flags & RTE_PDUMP_FLAG_RX) {
		end_q = (queue == RTE_PDUMP_ALL_QUEUES) ? nb_rx_q : queue + 1;
		ret = pdump_regitser_rx_callbacks(end_q, port, queue, ring, mp,
							operation);
		if (ret < 0)
			return ret;
	}

	/* register TX callback */
	if (flags & RTE_PDUMP_FLAG_TX) {
		end_q = (queue == RTE_PDUMP_ALL_QUEUES) ? nb_tx_q : queue + 1;
		ret = pdump_regitser_tx_callbacks(end_q, port, queue, ring, mp,
							operation);
		if (ret < 0)
			return ret;
	}

	return ret;
}

/* get socket path (/var/run if root, $HOME otherwise) */
static int
pdump_get_socket_path(char *buffer, int bufsz, enum rte_pdump_socktype type)
{
	char dpdk_dir[PATH_MAX] = {0};
	char dir[PATH_MAX] = {0};
	char *dir_home = NULL;
	int ret = 0;

	if (type == RTE_PDUMP_SOCKET_SERVER && server_socket_dir[0] != 0)
		snprintf(dir, sizeof(dir), "%s", server_socket_dir);
	else if (type == RTE_PDUMP_SOCKET_CLIENT && client_socket_dir[0] != 0)
		snprintf(dir, sizeof(dir), "%s", client_socket_dir);
	else {
		if (getuid() != 0) {
			dir_home = getenv(SOCKET_PATH_HOME);
			if (!dir_home) {
				RTE_LOG(ERR, PDUMP,
					"Failed to get environment variable"
					" value for %s, %s:%d\n",
					SOCKET_PATH_HOME, __func__, __LINE__);
				return -1;
			}
			snprintf(dpdk_dir, sizeof(dpdk_dir), "%s%s",
					dir_home, DPDK_DIR);
		} else
			snprintf(dpdk_dir, sizeof(dpdk_dir), "%s%s",
					SOCKET_PATH_VAR_RUN, DPDK_DIR);

		mkdir(dpdk_dir, 0700);
		snprintf(dir, sizeof(dir), "%s%s",
					dpdk_dir, SOCKET_DIR);
	}

	ret =  mkdir(dir, 0700);
	/* if user passed socket path is invalid, return immediately */
	if (ret < 0 && errno != EEXIST) {
		RTE_LOG(ERR, PDUMP,
			"Failed to create dir:%s:%s\n", dir,
			strerror(errno));
		rte_errno = errno;
		return -1;
	}

	if (type == RTE_PDUMP_SOCKET_SERVER)
		snprintf(buffer, bufsz, SERVER_SOCKET, dir);
	else
		snprintf(buffer, bufsz, CLIENT_SOCKET, dir, getpid(),
				rte_sys_gettid());

	return 0;
}

static int
pdump_create_server_socket(void)
{
	int ret, socket_fd;
	struct sockaddr_un addr;
	socklen_t addr_len;

	ret = pdump_get_socket_path(addr.sun_path, sizeof(addr.sun_path),
				RTE_PDUMP_SOCKET_SERVER);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to get server socket path: %s:%d\n",
			__func__, __LINE__);
		return -1;
	}
	addr.sun_family = AF_UNIX;

	/* remove if file already exists */
	unlink(addr.sun_path);

	/* set up a server socket */
	socket_fd = socket(AF_UNIX, SOCK_DGRAM, 0);
	if (socket_fd < 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to create server socket: %s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		return -1;
	}

	addr_len = sizeof(struct sockaddr_un);
	ret = bind(socket_fd, (struct sockaddr *) &addr, addr_len);
	if (ret) {
		RTE_LOG(ERR, PDUMP,
			"Failed to bind to server socket: %s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		close(socket_fd);
		return -1;
	}

	/* save the socket in local configuration */
	pdump_socket_fd = socket_fd;

	return 0;
}

static __attribute__((noreturn)) void *
pdump_thread_main(__rte_unused void *arg)
{
	struct sockaddr_un cli_addr;
	socklen_t cli_len;
	struct pdump_request cli_req;
	struct pdump_response resp;
	int n;
	int ret = 0;

	/* host thread, never break out */
	for (;;) {
		/* recv client requests */
		cli_len = sizeof(cli_addr);
		n = recvfrom(pdump_socket_fd, &cli_req,
				sizeof(struct pdump_request), 0,
				(struct sockaddr *)&cli_addr, &cli_len);
		if (n < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to recv from client:%s, %s:%d\n",
				strerror(errno), __func__, __LINE__);
			continue;
		}

		ret = set_pdump_rxtx_cbs(&cli_req);

		resp.ver = cli_req.ver;
		resp.res_op = cli_req.op;
		resp.err_value = ret;
		n = sendto(pdump_socket_fd, &resp,
				sizeof(struct pdump_response),
				0, (struct sockaddr *)&cli_addr, cli_len);
		if (n < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to send to client:%s, %s:%d\n",
				strerror(errno), __func__, __LINE__);
		}
	}
}

int
rte_pdump_init(const char *path)
{
	int ret = 0;
	char thread_name[RTE_MAX_THREAD_NAME_LEN];

	ret = rte_pdump_set_socket_dir(path, RTE_PDUMP_SOCKET_SERVER);
	if (ret != 0)
		return -1;

	ret = pdump_create_server_socket();
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to create server socket:%s:%d\n",
			__func__, __LINE__);
		return -1;
	}

	/* create the host thread to wait/handle pdump requests */
	ret = pthread_create(&pdump_thread, NULL, pdump_thread_main, NULL);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to create the pdump thread:%s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		return -1;
	}
	/* Set thread_name for aid in debugging. */
	snprintf(thread_name, RTE_MAX_THREAD_NAME_LEN, "pdump-thread");
	ret = rte_thread_setname(pdump_thread, thread_name);
	if (ret != 0) {
		RTE_LOG(DEBUG, PDUMP,
			"Failed to set thread name for pdump handling\n");
	}

	return 0;
}

int
rte_pdump_uninit(void)
{
	int ret;

	ret = pthread_cancel(pdump_thread);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to cancel the pdump thread:%s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		return -1;
	}

	ret = close(pdump_socket_fd);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to close server socket: %s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		return -1;
	}

	struct sockaddr_un addr;

	ret = pdump_get_socket_path(addr.sun_path, sizeof(addr.sun_path),
				RTE_PDUMP_SOCKET_SERVER);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to get server socket path: %s:%d\n",
			__func__, __LINE__);
		return -1;
	}
	ret = unlink(addr.sun_path);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to remove server socket addr: %s, %s:%d\n",
			strerror(errno), __func__, __LINE__);
		return -1;
	}

	return 0;
}

static int
pdump_create_client_socket(struct pdump_request *p)
{
	int ret, socket_fd;
	int pid;
	int n;
	struct pdump_response server_resp;
	struct sockaddr_un addr, serv_addr, from;
	socklen_t addr_len, serv_len;

	pid = getpid();

	socket_fd = socket(AF_UNIX, SOCK_DGRAM, 0);
	if (socket_fd < 0) {
		RTE_LOG(ERR, PDUMP,
			"client socket(): %s:pid(%d):tid(%u), %s:%d\n",
			strerror(errno), pid, rte_sys_gettid(),
			__func__, __LINE__);
		rte_errno = errno;
		return -1;
	}

	ret = pdump_get_socket_path(addr.sun_path, sizeof(addr.sun_path),
				RTE_PDUMP_SOCKET_CLIENT);
	if (ret != 0) {
		RTE_LOG(ERR, PDUMP,
			"Failed to get client socket path: %s:%d\n",
			__func__, __LINE__);
		rte_errno = errno;
		goto exit;
	}
	addr.sun_family = AF_UNIX;
	addr_len = sizeof(struct sockaddr_un);

	do {
		ret = bind(socket_fd, (struct sockaddr *) &addr, addr_len);
		if (ret) {
			RTE_LOG(ERR, PDUMP,
				"client bind(): %s, %s:%d\n",
				strerror(errno), __func__, __LINE__);
			rte_errno = errno;
			break;
		}

		serv_len = sizeof(struct sockaddr_un);
		memset(&serv_addr, 0, sizeof(serv_addr));
		ret = pdump_get_socket_path(serv_addr.sun_path,
					sizeof(serv_addr.sun_path),
					RTE_PDUMP_SOCKET_SERVER);
		if (ret != 0) {
			RTE_LOG(ERR, PDUMP,
				"Failed to get server socket path: %s:%d\n",
				__func__, __LINE__);
			rte_errno = errno;
			break;
		}
		serv_addr.sun_family = AF_UNIX;

		n =  sendto(socket_fd, p, sizeof(struct pdump_request), 0,
				(struct sockaddr *)&serv_addr, serv_len);
		if (n < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to send to server:%s, %s:%d\n",
				strerror(errno), __func__, __LINE__);
			rte_errno = errno;
			ret = -1;
			break;
		}

		n = recvfrom(socket_fd, &server_resp,
				sizeof(struct pdump_response), 0,
				(struct sockaddr *)&from, &serv_len);
		if (n < 0) {
			RTE_LOG(ERR, PDUMP,
				"failed to recv from server:%s, %s:%d\n",
				strerror(errno), __func__, __LINE__);
			rte_errno = errno;
			ret = -1;
			break;
		}
		ret = server_resp.err_value;
	} while (0);

exit:
	close(socket_fd);
	unlink(addr.sun_path);
	return ret;
}

static int
pdump_validate_ring_mp(struct rte_ring *ring, struct rte_mempool *mp)
{
	if (ring == NULL || mp == NULL) {
		RTE_LOG(ERR, PDUMP, "NULL ring or mempool are passed %s:%d\n",
			__func__, __LINE__);
		rte_errno = EINVAL;
		return -1;
	}
	if (mp->flags & MEMPOOL_F_SP_PUT || mp->flags & MEMPOOL_F_SC_GET) {
		RTE_LOG(ERR, PDUMP, "mempool with either SP or SC settings"
		" is not valid for pdump, should have MP and MC settings\n");
		rte_errno = EINVAL;
		return -1;
	}
	if (ring->prod.single || ring->cons.single) {
		RTE_LOG(ERR, PDUMP, "ring with either SP or SC settings"
		" is not valid for pdump, should have MP and MC settings\n");
		rte_errno = EINVAL;
		return -1;
	}

	return 0;
}

static int
pdump_validate_flags(uint32_t flags)
{
	if (flags != RTE_PDUMP_FLAG_RX && flags != RTE_PDUMP_FLAG_TX &&
		flags != RTE_PDUMP_FLAG_RXTX) {
		RTE_LOG(ERR, PDUMP,
			"invalid flags, should be either rx/tx/rxtx\n");
		rte_errno = EINVAL;
		return -1;
	}

	return 0;
}

static int
pdump_validate_port(uint8_t port, char *name)
{
	int ret = 0;

	if (port >= RTE_MAX_ETHPORTS) {
		RTE_LOG(ERR, PDUMP, "Invalid port id %u, %s:%d\n", port,
			__func__, __LINE__);
		rte_errno = EINVAL;
		return -1;
	}

	ret = rte_eth_dev_get_name_by_port(port, name);
	if (ret < 0) {
		RTE_LOG(ERR, PDUMP,
			"port id to name mapping failed for port id=%u, %s:%d\n",
			port, __func__, __LINE__);
		rte_errno = EINVAL;
		return -1;
	}

	return 0;
}

static int
pdump_prepare_client_request(char *device, uint16_t queue,
				uint32_t flags,
				uint16_t operation,
				struct rte_ring *ring,
				struct rte_mempool *mp,
				void *filter)
{
	int ret;
	struct pdump_request req = {.ver = 1,};

	req.flags = flags;
	req.op =  operation;
	if ((operation & ENABLE) != 0) {
		snprintf(req.data.en_v1.device, sizeof(req.data.en_v1.device),
				"%s", device);
		req.data.en_v1.queue = queue;
		req.data.en_v1.ring = ring;
		req.data.en_v1.mp = mp;
		req.data.en_v1.filter = filter;
	} else {
		snprintf(req.data.dis_v1.device, sizeof(req.data.dis_v1.device),
				"%s", device);
		req.data.dis_v1.queue = queue;
		req.data.dis_v1.ring = NULL;
		req.data.dis_v1.mp = NULL;
		req.data.dis_v1.filter = NULL;
	}

	ret = pdump_create_client_socket(&req);
	if (ret < 0) {
		RTE_LOG(ERR, PDUMP,
			"client request for pdump enable/disable failed\n");
		rte_errno = ret;
		return -1;
	}

	return 0;
}

int
rte_pdump_enable(uint8_t port, uint16_t queue, uint32_t flags,
			struct rte_ring *ring,
			struct rte_mempool *mp,
			void *filter)
{

	int ret = 0;
	char name[DEVICE_ID_SIZE];

	ret = pdump_validate_port(port, name);
	if (ret < 0)
		return ret;
	ret = pdump_validate_ring_mp(ring, mp);
	if (ret < 0)
		return ret;
	ret = pdump_validate_flags(flags);
	if (ret < 0)
		return ret;

	ret = pdump_prepare_client_request(name, queue, flags,
						ENABLE, ring, mp, filter);

	return ret;
}

int
rte_pdump_enable_by_deviceid(char *device_id, uint16_t queue,
				uint32_t flags,
				struct rte_ring *ring,
				struct rte_mempool *mp,
				void *filter)
{
	int ret = 0;

	ret = pdump_validate_ring_mp(ring, mp);
	if (ret < 0)
		return ret;
	ret = pdump_validate_flags(flags);
	if (ret < 0)
		return ret;

	ret = pdump_prepare_client_request(device_id, queue, flags,
						ENABLE, ring, mp, filter);

	return ret;
}

int
rte_pdump_disable(uint8_t port, uint16_t queue, uint32_t flags)
{
	int ret = 0;
	char name[DEVICE_ID_SIZE];

	ret = pdump_validate_port(port, name);
	if (ret < 0)
		return ret;
	ret = pdump_validate_flags(flags);
	if (ret < 0)
		return ret;

	ret = pdump_prepare_client_request(name, queue, flags,
						DISABLE, NULL, NULL, NULL);

	return ret;
}

int
rte_pdump_disable_by_deviceid(char *device_id, uint16_t queue,
				uint32_t flags)
{
	int ret = 0;

	ret = pdump_validate_flags(flags);
	if (ret < 0)
		return ret;

	ret = pdump_prepare_client_request(device_id, queue, flags,
						DISABLE, NULL, NULL, NULL);

	return ret;
}

int
rte_pdump_set_socket_dir(const char *path, enum rte_pdump_socktype type)
{
	int ret, count;

	if (path != NULL) {
		if (type == RTE_PDUMP_SOCKET_SERVER) {
			count = sizeof(server_socket_dir);
			ret = snprintf(server_socket_dir, count, "%s", path);
		} else {
			count = sizeof(client_socket_dir);
			ret = snprintf(client_socket_dir, count, "%s", path);
		}

		if (ret < 0  || ret >= count) {
			RTE_LOG(ERR, PDUMP,
					"Invalid socket path:%s:%d\n",
					__func__, __LINE__);
			if (type == RTE_PDUMP_SOCKET_SERVER)
				server_socket_dir[0] = 0;
			else
				client_socket_dir[0] = 0;
			return -EINVAL;
		}
	}

	return 0;
}