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
/* SPDX-License-Identifier: BSD-3-Clause
 * Copyright 2017,2019 NXP
 * Copyright(c) 2017-2020 Intel Corporation.
 */

#ifndef _RTE_SECURITY_H_
#define _RTE_SECURITY_H_

/**
 * @file rte_security.h
 *
 * RTE Security Common Definitions
 *
 */

#ifdef __cplusplus
extern "C" {
#endif

#include <sys/types.h>

#include <netinet/in.h>
#include <netinet/ip.h>
#include <netinet/ip6.h>

#include <rte_compat.h>
#include <rte_common.h>
#include <rte_crypto.h>
#include <rte_mbuf.h>
#include <rte_memory.h>
#include <rte_mempool.h>

/** IPSec protocol mode */
enum rte_security_ipsec_sa_mode {
	RTE_SECURITY_IPSEC_SA_MODE_TRANSPORT = 1,
	/**< IPSec Transport mode */
	RTE_SECURITY_IPSEC_SA_MODE_TUNNEL,
	/**< IPSec Tunnel mode */
};

/** IPSec Protocol */
enum rte_security_ipsec_sa_protocol {
	RTE_SECURITY_IPSEC_SA_PROTO_AH = 1,
	/**< AH protocol */
	RTE_SECURITY_IPSEC_SA_PROTO_ESP,
	/**< ESP protocol */
};

/** IPSEC tunnel type */
enum rte_security_ipsec_tunnel_type {
	RTE_SECURITY_IPSEC_TUNNEL_IPV4 = 1,
	/**< Outer header is IPv4 */
	RTE_SECURITY_IPSEC_TUNNEL_IPV6,
	/**< Outer header is IPv6 */
};

/**
 * Security context for crypto/eth devices
 *
 * Security instance for each driver to register security operations.
 * The application can get the security context from the crypto/eth device id
 * using the APIs rte_cryptodev_get_sec_ctx()/rte_eth_dev_get_sec_ctx()
 * This structure is used to identify the device(crypto/eth) for which the
 * security operations need to be performed.
 */
struct rte_security_ctx {
	void *device;
	/**< Crypto/ethernet device attached */
	const struct rte_security_ops *ops;
	/**< Pointer to security ops for the device */
	uint16_t sess_cnt;
	/**< Number of sessions attached to this context */
};

/**
 * IPSEC tunnel parameters
 *
 * These parameters are used to build outbound tunnel headers.
 */
struct rte_security_ipsec_tunnel_param {
	enum rte_security_ipsec_tunnel_type type;
	/**< Tunnel type: IPv4 or IPv6 */
	RTE_STD_C11
	union {
		struct {
			struct in_addr src_ip;
			/**< IPv4 source address */
			struct in_addr dst_ip;
			/**< IPv4 destination address */
			uint8_t dscp;
			/**< IPv4 Differentiated Services Code Point */
			uint8_t df;
			/**< IPv4 Don't Fragment bit */
			uint8_t ttl;
			/**< IPv4 Time To Live */
		} ipv4;
		/**< IPv4 header parameters */
		struct {
			struct in6_addr src_addr;
			/**< IPv6 source address */
			struct in6_addr dst_addr;
			/**< IPv6 destination address */
			uint8_t dscp;
			/**< IPv6 Differentiated Services Code Point */
			uint32_t flabel;
			/**< IPv6 flow label */
			uint8_t hlimit;
			/**< IPv6 hop limit */
		} ipv6;
		/**< IPv6 header parameters */
	};
};

/**
 * IPsec Security Association option flags
 */
struct rte_security_ipsec_sa_options {
	/** Extended Sequence Numbers (ESN)
	 *
	 * * 1: Use extended (64 bit) sequence numbers
	 * * 0: Use normal sequence numbers
	 */
	uint32_t esn : 1;

	/** UDP encapsulation
	 *
	 * * 1: Do UDP encapsulation/decapsulation so that IPSEC packets can
	 *      traverse through NAT boxes.
	 * * 0: No UDP encapsulation
	 */
	uint32_t udp_encap : 1;

	/** Copy DSCP bits
	 *
	 * * 1: Copy IPv4 or IPv6 DSCP bits from inner IP header to
	 *      the outer IP header in encapsulation, and vice versa in
	 *      decapsulation.
	 * * 0: Do not change DSCP field.
	 */
	uint32_t copy_dscp : 1;

	/** Copy IPv6 Flow Label
	 *
	 * * 1: Copy IPv6 flow label from inner IPv6 header to the
	 *      outer IPv6 header.
	 * * 0: Outer header is not modified.
	 */
	uint32_t copy_flabel : 1;

	/** Copy IPv4 Don't Fragment bit
	 *
	 * * 1: Copy the DF bit from the inner IPv4 header to the outer
	 *      IPv4 header.
	 * * 0: Outer header is not modified.
	 */
	uint32_t copy_df : 1;

	/** Decrement inner packet Time To Live (TTL) field
	 *
	 * * 1: In tunnel mode, decrement inner packet IPv4 TTL or
	 *      IPv6 Hop Limit after tunnel decapsulation, or before tunnel
	 *      encapsulation.
	 * * 0: Inner packet is not modified.
	 */
	uint32_t dec_ttl : 1;

	/** Explicit Congestion Notification (ECN)
	 *
	 * * 1: In tunnel mode, enable outer header ECN Field copied from
	 *      inner header in tunnel encapsulation, or inner header ECN
	 *      field construction in decapsulation.
	 * * 0: Inner/outer header are not modified.
	 */
	uint32_t ecn : 1;

	/** Security statistics
	 *
	 * * 1: Enable per session security statistics collection for
	 *      this SA, if supported by the driver.
	 * * 0: Disable per session security statistics collection for this SA.
	 */
	uint32_t stats : 1;
};

/** IPSec security association direction */
enum rte_security_ipsec_sa_direction {
	RTE_SECURITY_IPSEC_SA_DIR_EGRESS,
	/**< Encrypt and generate digest */
	RTE_SECURITY_IPSEC_SA_DIR_INGRESS,
	/**< Verify digest and decrypt */
};

/**
 * IPsec security association configuration data.
 *
 * This structure contains data required to create an IPsec SA security session.
 */
struct rte_security_ipsec_xform {
	uint32_t spi;
	/**< SA security parameter index */
	uint32_t salt;
	/**< SA salt */
	struct rte_security_ipsec_sa_options options;
	/**< various SA options */
	enum rte_security_ipsec_sa_direction direction;
	/**< IPSec SA Direction - Egress/Ingress */
	enum rte_security_ipsec_sa_protocol proto;
	/**< IPsec SA Protocol - AH/ESP */
	enum rte_security_ipsec_sa_mode mode;
	/**< IPsec SA Mode - transport/tunnel */
	struct rte_security_ipsec_tunnel_param tunnel;
	/**< Tunnel parameters, NULL for transport mode */
	uint64_t esn_soft_limit;
	/**< ESN for which the overflow event need to be raised */
	uint32_t replay_win_sz;
	/**< Anti replay window size to enable sequence replay attack handling.
	 * replay checking is disabled if the window size is 0.
	 */
};

/**
 * MACsec security session configuration
 */
struct rte_security_macsec_xform {
	/** To be Filled */
	int dummy;
};

/**
 * PDCP Mode of session
 */
enum rte_security_pdcp_domain {
	RTE_SECURITY_PDCP_MODE_CONTROL,	/**< PDCP control plane */
	RTE_SECURITY_PDCP_MODE_DATA,	/**< PDCP data plane */
};

/** PDCP Frame direction */
enum rte_security_pdcp_direction {
	RTE_SECURITY_PDCP_UPLINK,	/**< Uplink */
	RTE_SECURITY_PDCP_DOWNLINK,	/**< Downlink */
};

/** PDCP Sequence Number Size selectors */
enum rte_security_pdcp_sn_size {
	/** PDCP_SN_SIZE_5: 5bit sequence number */
	RTE_SECURITY_PDCP_SN_SIZE_5 = 5,
	/** PDCP_SN_SIZE_7: 7bit sequence number */
	RTE_SECURITY_PDCP_SN_SIZE_7 = 7,
	/** PDCP_SN_SIZE_12: 12bit sequence number */
	RTE_SECURITY_PDCP_SN_SIZE_12 = 12,
	/** PDCP_SN_SIZE_15: 15bit sequence number */
	RTE_SECURITY_PDCP_SN_SIZE_15 = 15,
	/** PDCP_SN_SIZE_18: 18bit sequence number */
	RTE_SECURITY_PDCP_SN_SIZE_18 = 18
};

/**
 * PDCP security association configuration data.
 *
 * This structure contains data required to create a PDCP security session.
 */
struct rte_security_pdcp_xform {
	int8_t bearer;	/**< PDCP bearer ID */
	/** Enable in order delivery, this field shall be set only if
	 * driver/HW is capable. See RTE_SECURITY_PDCP_ORDERING_CAP.
	 */
	uint8_t en_ordering;
	/** Notify driver/HW to detect and remove duplicate packets.
	 * This field should be set only when driver/hw is capable.
	 * See RTE_SECURITY_PDCP_DUP_DETECT_CAP.
	 */
	uint8_t remove_duplicates;
	/** PDCP mode of operation: Control or data */
	enum rte_security_pdcp_domain domain;
	/** PDCP Frame Direction 0:UL 1:DL */
	enum rte_security_pdcp_direction pkt_dir;
	/** Sequence number size, 5/7/12/15/18 */
	enum rte_security_pdcp_sn_size sn_size;
	/** Starting Hyper Frame Number to be used together with the SN
	 * from the PDCP frames
	 */
	uint32_t hfn;
	/** HFN Threshold for key renegotiation */
	uint32_t hfn_threshold;
	/** HFN can be given as a per packet value also.
	 * As we do not have IV in case of PDCP, and HFN is
	 * used to generate IV. IV field can be used to get the
	 * per packet HFN while enq/deq.
	 * If hfn_ovrd field is set, user is expected to set the
	 * per packet HFN in place of IV. PMDs will extract the HFN
	 * and perform operations accordingly.
	 */
	uint32_t hfn_ovrd;
};

/** DOCSIS direction */
enum rte_security_docsis_direction {
	RTE_SECURITY_DOCSIS_UPLINK,
	/**< Uplink
	 * - Decryption, followed by CRC Verification
	 */
	RTE_SECURITY_DOCSIS_DOWNLINK,
	/**< Downlink
	 * - CRC Generation, followed by Encryption
	 */
};

/**
 * DOCSIS security session configuration.
 *
 * This structure contains data required to create a DOCSIS security session.
 */
struct rte_security_docsis_xform {
	enum rte_security_docsis_direction direction;
	/**< DOCSIS direction */
};

/**
 * Security session action type.
 */
enum rte_security_session_action_type {
	RTE_SECURITY_ACTION_TYPE_NONE,
	/**< No security actions */
	RTE_SECURITY_ACTION_TYPE_INLINE_CRYPTO,
	/**< Crypto processing for security protocol is processed inline
	 * during transmission
	 */
	RTE_SECURITY_ACTION_TYPE_INLINE_PROTOCOL,
	/**< All security protocol processing is performed inline during
	 * transmission
	 */
	RTE_SECURITY_ACTION_TYPE_LOOKASIDE_PROTOCOL,
	/**< All security protocol processing including crypto is performed
	 * on a lookaside accelerator
	 */
	RTE_SECURITY_ACTION_TYPE_CPU_CRYPTO
	/**< Similar to ACTION_TYPE_NONE but crypto processing for security
	 * protocol is processed synchronously by a CPU.
	 */
};

/** Security session protocol definition */
enum rte_security_session_protocol {
	RTE_SECURITY_PROTOCOL_IPSEC = 1,
	/**< IPsec Protocol */
	RTE_SECURITY_PROTOCOL_MACSEC,
	/**< MACSec Protocol */
	RTE_SECURITY_PROTOCOL_PDCP,
	/**< PDCP Protocol */
	RTE_SECURITY_PROTOCOL_DOCSIS,
	/**< DOCSIS Protocol */
};

/**
 * Security session configuration
 */
struct rte_security_session_conf {
	enum rte_security_session_action_type action_type;
	/**< Type of action to be performed on the session */
	enum rte_security_session_protocol protocol;
	/**< Security protocol to be configured */
	RTE_STD_C11
	union {
		struct rte_security_ipsec_xform ipsec;
		struct rte_security_macsec_xform macsec;
		struct rte_security_pdcp_xform pdcp;
		struct rte_security_docsis_xform docsis;
	};
	/**< Configuration parameters for security session */
	struct rte_crypto_sym_xform *crypto_xform;
	/**< Security Session Crypto Transformations */
	void *userdata;
	/**< Application specific userdata to be saved with session */
};

struct rte_security_session {
	void *sess_private_data;
	/**< Private session material */
	uint64_t opaque_data;
	/**< Opaque user defined data */
};

/**
 * Create security session as specified by the session configuration
 *
 * @param   instance	security instance
 * @param   conf	session configuration parameters
 * @param   mp		mempool to allocate session objects from
 * @return
 *  - On success, pointer to session
 *  - On failure, NULL
 */
struct rte_security_session *
rte_security_session_create(struct rte_security_ctx *instance,
			    struct rte_security_session_conf *conf,
			    struct rte_mempool *mp);

/**
 * Update security session as specified by the session configuration
 *
 * @param   instance	security instance
 * @param   sess	session to update parameters
 * @param   conf	update configuration parameters
 * @return
 *  - On success returns 0
 *  - On failure returns a negative errno value.
 */
__rte_experimental
int
rte_security_session_update(struct rte_security_ctx *instance,
			    struct rte_security_session *sess,
			    struct rte_security_session_conf *conf);

/**
 * Get the size of the security session data for a device.
 *
 * @param   instance	security instance.
 *
 * @return
 *   - Size of the private data, if successful
 *   - 0 if device is invalid or does not support the operation.
 */
unsigned int
rte_security_session_get_size(struct rte_security_ctx *instance);

/**
 * Free security session header and the session private data and
 * return it to its original mempool.
 *
 * @param   instance	security instance
 * @param   sess	security session to be freed
 *
 * @return
 *  - 0 if successful.
 *  - -EINVAL if session or context instance is NULL.
 *  - -EBUSY if not all device private data has been freed.
 *  - -ENOTSUP if destroying private data is not supported.
 *  - other negative values in case of freeing private data errors.
 */
int
rte_security_session_destroy(struct rte_security_ctx *instance,
			     struct rte_security_session *sess);

/**
 *  Updates the buffer with device-specific defined metadata
 *
 * @param	instance	security instance
 * @param	sess		security session
 * @param	mb		packet mbuf to set metadata on.
 * @param	params		device-specific defined parameters
 *				required for metadata
 *
 * @return
 *  - On success, zero.
 *  - On failure, a negative value.
 */
int
rte_security_set_pkt_metadata(struct rte_security_ctx *instance,
			      struct rte_security_session *sess,
			      struct rte_mbuf *mb, void *params);

/**
 * Get userdata associated with the security session. Device specific metadata
 * provided would be used to uniquely identify the security session being
 * referred to. This userdata would be registered while creating the session,
 * and application can use this to identify the SA etc.
 *
 * Device specific metadata would be set in mbuf for inline processed inbound
 * packets. In addition, the same metadata would be set for IPsec events
 * reported by rte_eth_event framework.
 *
 * @param   instance	security instance
 * @param   md		device-specific metadata
 *
 * @return
 *  - On success, userdata
 *  - On failure, NULL
 */
__rte_experimental
void *
rte_security_get_userdata(struct rte_security_ctx *instance, uint64_t md);

/**
 * Attach a session to a symmetric crypto operation
 *
 * @param	sym_op	crypto operation
 * @param	sess	security session
 */
static inline int
__rte_security_attach_session(struct rte_crypto_sym_op *sym_op,
			      struct rte_security_session *sess)
{
	sym_op->sec_session = sess;

	return 0;
}

static inline void *
get_sec_session_private_data(const struct rte_security_session *sess)
{
	return sess->sess_private_data;
}

static inline void
set_sec_session_private_data(struct rte_security_session *sess,
			     void *private_data)
{
	sess->sess_private_data = private_data;
}

/**
 * Attach a session to a crypto operation.
 * This API is needed only in case of RTE_SECURITY_SESS_CRYPTO_PROTO_OFFLOAD
 * For other rte_security_session_action_type, ol_flags in rte_mbuf may be
 * defined to perform security operations.
 *
 * @param	op	crypto operation
 * @param	sess	security session
 */
static inline int
rte_security_attach_session(struct rte_crypto_op *op,
			    struct rte_security_session *sess)
{
	if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
		return -EINVAL;

	op->sess_type =  RTE_CRYPTO_OP_SECURITY_SESSION;

	return __rte_security_attach_session(op->sym, sess);
}

struct rte_security_macsec_stats {
	uint64_t reserved;
};

struct rte_security_ipsec_stats {
	uint64_t ipackets;  /**< Successfully received IPsec packets. */
	uint64_t opackets;  /**< Successfully transmitted IPsec packets.*/
	uint64_t ibytes;    /**< Successfully received IPsec bytes. */
	uint64_t obytes;    /**< Successfully transmitted IPsec bytes. */
	uint64_t ierrors;   /**< IPsec packets receive/decrypt errors. */
	uint64_t oerrors;   /**< IPsec packets transmit/encrypt errors. */
	uint64_t reserved1; /**< Reserved for future use. */
	uint64_t reserved2; /**< Reserved for future use. */
};

struct rte_security_pdcp_stats {
	uint64_t reserved;
};

struct rte_security_docsis_stats {
	uint64_t reserved;
};

struct rte_security_stats {
	enum rte_security_session_protocol protocol;
	/**< Security protocol to be configured */

	RTE_STD_C11
	union {
		struct rte_security_macsec_stats macsec;
		struct rte_security_ipsec_stats ipsec;
		struct rte_security_pdcp_stats pdcp;
		struct rte_security_docsis_stats docsis;
	};
};

/**
 * Get security session statistics
 *
 * @param	instance	security instance
 * @param	sess		security session
 * If security session is NULL then global (per security instance) statistics
 * will be retrieved, if supported. Global statistics collection is not
 * dependent on the per session statistics configuration.
 * @param	stats		statistics
 * @return
 *  - On success, return 0
 *  - On failure, a negative value
 */
__rte_experimental
int
rte_security_session_stats_get(struct rte_security_ctx *instance,
			       struct rte_security_session *sess,
			       struct rte_security_stats *stats);

/**
 * Security capability definition
 */
struct rte_security_capability {
	enum rte_security_session_action_type action;
	/**< Security action type*/
	enum rte_security_session_protocol protocol;
	/**< Security protocol */
	RTE_STD_C11
	union {
		struct {
			enum rte_security_ipsec_sa_protocol proto;
			/**< IPsec SA protocol */
			enum rte_security_ipsec_sa_mode mode;
			/**< IPsec SA mode */
			enum rte_security_ipsec_sa_direction direction;
			/**< IPsec SA direction */
			struct rte_security_ipsec_sa_options options;
			/**< IPsec SA supported options */
			uint32_t replay_win_sz_max;
			/**< IPsec Anti Replay Window Size. A '0' value
			 * indicates that Anti Replay is not supported.
			 */
		} ipsec;
		/**< IPsec capability */
		struct {
			/* To be Filled */
			int dummy;
		} macsec;
		/**< MACsec capability */
		struct {
			enum rte_security_pdcp_domain domain;
			/**< PDCP mode of operation: Control or data */
			uint32_t capa_flags;
			/**< Capability flags, see RTE_SECURITY_PDCP_* */
		} pdcp;
		/**< PDCP capability */
		struct {
			enum rte_security_docsis_direction direction;
			/**< DOCSIS direction */
		} docsis;
		/**< DOCSIS capability */
	};

	const struct rte_cryptodev_capabilities *crypto_capabilities;
	/**< Corresponding crypto capabilities for security capability  */

	uint32_t ol_flags;
	/**< Device offload flags */
};

/** Underlying Hardware/driver which support PDCP may or may not support
 * packet ordering. Set RTE_SECURITY_PDCP_ORDERING_CAP if it support.
 * If it is not set, driver/HW assumes packets received are in order
 * and it will be application's responsibility to maintain ordering.
 */
#define RTE_SECURITY_PDCP_ORDERING_CAP		0x00000001

/** Underlying Hardware/driver which support PDCP may or may not detect
 * duplicate packet. Set RTE_SECURITY_PDCP_DUP_DETECT_CAP if it support.
 * If it is not set, driver/HW assumes there is no duplicate packet received.
 */
#define RTE_SECURITY_PDCP_DUP_DETECT_CAP	0x00000002

#define RTE_SECURITY_TX_OLOAD_NEED_MDATA	0x00000001
/**< HW needs metadata update, see rte_security_set_pkt_metadata().
 */

#define RTE_SECURITY_TX_HW_TRAILER_OFFLOAD	0x00000002
/**< HW constructs trailer of packets
 * Transmitted packets will have the trailer added to them
 * by hardware. The next protocol field will be based on
 * the mbuf->inner_esp_next_proto field.
 */
#define RTE_SECURITY_RX_HW_TRAILER_OFFLOAD	0x00010000
/**< HW removes trailer of packets
 * Received packets have no trailer, the next protocol field
 * is supplied in the mbuf->inner_esp_next_proto field.
 * Inner packet is not modified.
 */

/**
 * Security capability index used to query a security instance for a specific
 * security capability
 */
struct rte_security_capability_idx {
	enum rte_security_session_action_type action;
	enum rte_security_session_protocol protocol;

	RTE_STD_C11
	union {
		struct {
			enum rte_security_ipsec_sa_protocol proto;
			enum rte_security_ipsec_sa_mode mode;
			enum rte_security_ipsec_sa_direction direction;
		} ipsec;
		struct {
			enum rte_security_pdcp_domain domain;
			uint32_t capa_flags;
		} pdcp;
		struct {
			enum rte_security_docsis_direction direction;
		} docsis;
	};
};

/**
 *  Returns array of security instance capabilities
 *
 * @param	instance	Security instance.
 *
 * @return
 *   - Returns array of security capabilities.
 *   - Return NULL if no capabilities available.
 */
const struct rte_security_capability *
rte_security_capabilities_get(struct rte_security_ctx *instance);

/**
 * Query if a specific capability is available on security instance
 *
 * @param	instance	security instance.
 * @param	idx		security capability index to match against
 *
 * @return
 *   - Returns pointer to security capability on match of capability
 *     index criteria.
 *   - Return NULL if the capability not matched on security instance.
 */
const struct rte_security_capability *
rte_security_capability_get(struct rte_security_ctx *instance,
			    struct rte_security_capability_idx *idx);

#ifdef __cplusplus
}
#endif

#endif /* _RTE_SECURITY_H_ */