1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2019 Intel Corporation
5 #ifndef _RTE_CRYPTO_SYM_H_
6 #define _RTE_CRYPTO_SYM_H_
9 * @file rte_crypto_sym.h
11 * RTE Definitions for Symmetric Cryptography
13 * Defines symmetric cipher and authentication algorithms and modes, as well
14 * as supported symmetric crypto operation combinations.
24 #include <rte_memory.h>
25 #include <rte_mempool.h>
26 #include <rte_common.h>
29 /** Symmetric Cipher Algorithms */
30 enum rte_crypto_cipher_algorithm {
31 RTE_CRYPTO_CIPHER_NULL = 1,
32 /**< NULL cipher algorithm. No mode applies to the NULL algorithm. */
34 RTE_CRYPTO_CIPHER_3DES_CBC,
35 /**< Triple DES algorithm in CBC mode */
36 RTE_CRYPTO_CIPHER_3DES_CTR,
37 /**< Triple DES algorithm in CTR mode */
38 RTE_CRYPTO_CIPHER_3DES_ECB,
39 /**< Triple DES algorithm in ECB mode */
41 RTE_CRYPTO_CIPHER_AES_CBC,
42 /**< AES algorithm in CBC mode */
43 RTE_CRYPTO_CIPHER_AES_CTR,
44 /**< AES algorithm in Counter mode */
45 RTE_CRYPTO_CIPHER_AES_ECB,
46 /**< AES algorithm in ECB mode */
47 RTE_CRYPTO_CIPHER_AES_F8,
48 /**< AES algorithm in F8 mode */
49 RTE_CRYPTO_CIPHER_AES_XTS,
50 /**< AES algorithm in XTS mode */
52 RTE_CRYPTO_CIPHER_ARC4,
53 /**< (A)RC4 cipher algorithm */
55 RTE_CRYPTO_CIPHER_KASUMI_F8,
56 /**< KASUMI algorithm in F8 mode */
58 RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
59 /**< SNOW 3G algorithm in UEA2 mode */
61 RTE_CRYPTO_CIPHER_ZUC_EEA3,
62 /**< ZUC algorithm in EEA3 mode */
64 RTE_CRYPTO_CIPHER_DES_CBC,
65 /**< DES algorithm in CBC mode */
67 RTE_CRYPTO_CIPHER_AES_DOCSISBPI,
68 /**< AES algorithm using modes required by
69 * DOCSIS Baseline Privacy Plus Spec.
70 * Chained mbufs are not supported in this mode, i.e. rte_mbuf.next
71 * for m_src and m_dst in the rte_crypto_sym_op must be NULL.
74 RTE_CRYPTO_CIPHER_DES_DOCSISBPI,
75 /**< DES algorithm using modes required by
76 * DOCSIS Baseline Privacy Plus Spec.
77 * Chained mbufs are not supported in this mode, i.e. rte_mbuf.next
78 * for m_src and m_dst in the rte_crypto_sym_op must be NULL.
81 RTE_CRYPTO_CIPHER_LIST_END
85 /** Cipher algorithm name strings */
87 rte_crypto_cipher_algorithm_strings[];
89 /** Symmetric Cipher Direction */
90 enum rte_crypto_cipher_operation {
91 RTE_CRYPTO_CIPHER_OP_ENCRYPT,
92 /**< Encrypt cipher operation */
93 RTE_CRYPTO_CIPHER_OP_DECRYPT
94 /**< Decrypt cipher operation */
97 /** Cipher operation name strings */
99 rte_crypto_cipher_operation_strings[];
102 * Symmetric Cipher Setup Data.
104 * This structure contains data relating to Cipher (Encryption and Decryption)
105 * use to create a session.
107 struct rte_crypto_cipher_xform {
108 enum rte_crypto_cipher_operation op;
109 /**< This parameter determines if the cipher operation is an encrypt or
110 * a decrypt operation. For the RC4 algorithm and the F8/CTR modes,
111 * only encrypt operations are valid.
113 enum rte_crypto_cipher_algorithm algo;
114 /**< Cipher algorithm */
117 const uint8_t *data; /**< pointer to key data */
118 uint16_t length; /**< key length in bytes */
122 * For the RTE_CRYPTO_CIPHER_AES_F8 mode of operation, key.data will
123 * point to a concatenation of the AES encryption key followed by a
124 * keymask. As per RFC3711, the keymask should be padded with trailing
125 * bytes to match the length of the encryption key used.
127 * Cipher key length is in bytes. For AES it can be 128 bits (16 bytes),
128 * 192 bits (24 bytes) or 256 bits (32 bytes).
130 * For the RTE_CRYPTO_CIPHER_AES_F8 mode of operation, key.length
131 * should be set to the combined length of the encryption key and the
132 * keymask. Since the keymask and the encryption key are the same size,
133 * key.length should be set to 2 x the AES encryption key length.
135 * For the AES-XTS mode of operation:
136 * - Two keys must be provided and key.length refers to total length of
138 * - key.data must point to the two keys concatenated together
140 * - Each key can be either 128 bits (16 bytes) or 256 bits (32 bytes).
141 * - Both keys must have the same size.
145 /**< Starting point for Initialisation Vector or Counter,
146 * specified as number of bytes from start of crypto
147 * operation (rte_crypto_op).
149 * - For block ciphers in CBC or F8 mode, or for KASUMI
150 * in F8 mode, or for SNOW 3G in UEA2 mode, this is the
151 * Initialisation Vector (IV) value.
153 * - For block ciphers in CTR mode, this is the counter.
155 * - For CCM mode, the first byte is reserved, and the
156 * nonce should be written starting at &iv[1] (to allow
157 * space for the implementation to write in the flags
158 * in the first byte). Note that a full 16 bytes should
159 * be allocated, even though the length field will
160 * have a value less than this. Note that the PMDs may
161 * modify the memory reserved (the first byte and the
164 * - For AES-XTS, this is the 128bit tweak, i, from
165 * IEEE Std 1619-2007.
167 * For optimum performance, the data pointed to SHOULD
171 /**< Length of valid IV data.
173 * - For block ciphers in CBC or F8 mode, or for KASUMI
174 * in F8 mode, or for SNOW 3G in UEA2 mode, this is the
175 * length of the IV (which must be the same as the
176 * block length of the cipher).
178 * - For block ciphers in CTR mode, this is the length
179 * of the counter (which must be the same as the block
180 * length of the cipher).
182 * - For CCM mode, this is the length of the nonce,
183 * which can be in the range 7 to 13 inclusive.
185 } iv; /**< Initialisation vector parameters */
188 /** Symmetric Authentication / Hash Algorithms */
189 enum rte_crypto_auth_algorithm {
190 RTE_CRYPTO_AUTH_NULL = 1,
191 /**< NULL hash algorithm. */
193 RTE_CRYPTO_AUTH_AES_CBC_MAC,
194 /**< AES-CBC-MAC algorithm. Only 128-bit keys are supported. */
195 RTE_CRYPTO_AUTH_AES_CMAC,
196 /**< AES CMAC algorithm. */
197 RTE_CRYPTO_AUTH_AES_GMAC,
198 /**< AES GMAC algorithm. */
199 RTE_CRYPTO_AUTH_AES_XCBC_MAC,
200 /**< AES XCBC algorithm. */
202 RTE_CRYPTO_AUTH_KASUMI_F9,
203 /**< KASUMI algorithm in F9 mode. */
206 /**< MD5 algorithm */
207 RTE_CRYPTO_AUTH_MD5_HMAC,
208 /**< HMAC using MD5 algorithm */
210 RTE_CRYPTO_AUTH_SHA1,
211 /**< 128 bit SHA algorithm. */
212 RTE_CRYPTO_AUTH_SHA1_HMAC,
213 /**< HMAC using 128 bit SHA algorithm. */
214 RTE_CRYPTO_AUTH_SHA224,
215 /**< 224 bit SHA algorithm. */
216 RTE_CRYPTO_AUTH_SHA224_HMAC,
217 /**< HMAC using 224 bit SHA algorithm. */
218 RTE_CRYPTO_AUTH_SHA256,
219 /**< 256 bit SHA algorithm. */
220 RTE_CRYPTO_AUTH_SHA256_HMAC,
221 /**< HMAC using 256 bit SHA algorithm. */
222 RTE_CRYPTO_AUTH_SHA384,
223 /**< 384 bit SHA algorithm. */
224 RTE_CRYPTO_AUTH_SHA384_HMAC,
225 /**< HMAC using 384 bit SHA algorithm. */
226 RTE_CRYPTO_AUTH_SHA512,
227 /**< 512 bit SHA algorithm. */
228 RTE_CRYPTO_AUTH_SHA512_HMAC,
229 /**< HMAC using 512 bit SHA algorithm. */
231 RTE_CRYPTO_AUTH_SNOW3G_UIA2,
232 /**< SNOW 3G algorithm in UIA2 mode. */
234 RTE_CRYPTO_AUTH_ZUC_EIA3,
235 /**< ZUC algorithm in EIA3 mode */
237 RTE_CRYPTO_AUTH_SHA3_224,
238 /**< 224 bit SHA3 algorithm. */
239 RTE_CRYPTO_AUTH_SHA3_224_HMAC,
240 /**< HMAC using 224 bit SHA3 algorithm. */
241 RTE_CRYPTO_AUTH_SHA3_256,
242 /**< 256 bit SHA3 algorithm. */
243 RTE_CRYPTO_AUTH_SHA3_256_HMAC,
244 /**< HMAC using 256 bit SHA3 algorithm. */
245 RTE_CRYPTO_AUTH_SHA3_384,
246 /**< 384 bit SHA3 algorithm. */
247 RTE_CRYPTO_AUTH_SHA3_384_HMAC,
248 /**< HMAC using 384 bit SHA3 algorithm. */
249 RTE_CRYPTO_AUTH_SHA3_512,
250 /**< 512 bit SHA3 algorithm. */
251 RTE_CRYPTO_AUTH_SHA3_512_HMAC,
252 /**< HMAC using 512 bit SHA3 algorithm. */
254 RTE_CRYPTO_AUTH_LIST_END
257 /** Authentication algorithm name strings */
259 rte_crypto_auth_algorithm_strings[];
261 /** Symmetric Authentication / Hash Operations */
262 enum rte_crypto_auth_operation {
263 RTE_CRYPTO_AUTH_OP_VERIFY, /**< Verify authentication digest */
264 RTE_CRYPTO_AUTH_OP_GENERATE /**< Generate authentication digest */
267 /** Authentication operation name strings */
269 rte_crypto_auth_operation_strings[];
272 * Authentication / Hash transform data.
274 * This structure contains data relating to an authentication/hash crypto
275 * transforms. The fields op, algo and digest_length are common to all
276 * authentication transforms and MUST be set.
278 struct rte_crypto_auth_xform {
279 enum rte_crypto_auth_operation op;
280 /**< Authentication operation type */
281 enum rte_crypto_auth_algorithm algo;
282 /**< Authentication algorithm selection */
285 const uint8_t *data; /**< pointer to key data */
286 uint16_t length; /**< key length in bytes */
288 /**< Authentication key data.
289 * The authentication key length MUST be less than or equal to the
290 * block size of the algorithm. It is the callers responsibility to
291 * ensure that the key length is compliant with the standard being used
292 * (for example RFC 2104, FIPS 198a).
297 /**< Starting point for Initialisation Vector or Counter,
298 * specified as number of bytes from start of crypto
299 * operation (rte_crypto_op).
301 * - For SNOW 3G in UIA2 mode, for ZUC in EIA3 mode
302 * this is the authentication Initialisation Vector
303 * (IV) value. For AES-GMAC IV description please refer
304 * to the field `length` in iv struct.
306 * - For KASUMI in F9 mode and other authentication
307 * algorithms, this field is not used.
309 * For optimum performance, the data pointed to SHOULD
313 /**< Length of valid IV data.
315 * - For SNOW3G in UIA2 mode, for ZUC in EIA3 mode and
316 * for AES-GMAC, this is the length of the IV.
318 * - For KASUMI in F9 mode and other authentication
319 * algorithms, this field is not used.
321 * - For GMAC mode, this is either:
322 * 1) Number greater or equal to one, which means that IV
323 * is used and J0 will be computed internally, a minimum
324 * of 16 bytes must be allocated.
325 * 2) Zero, in which case data points to J0. In this case
326 * 16 bytes of J0 should be passed where J0 is defined
330 } iv; /**< Initialisation vector parameters */
332 uint16_t digest_length;
333 /**< Length of the digest to be returned. If the verify option is set,
334 * this specifies the length of the digest to be compared for the
337 * It is the caller's responsibility to ensure that the
338 * digest length is compliant with the hash algorithm being used.
339 * If the value is less than the maximum length allowed by the hash,
340 * the result shall be truncated.
345 /** Symmetric AEAD Algorithms */
346 enum rte_crypto_aead_algorithm {
347 RTE_CRYPTO_AEAD_AES_CCM = 1,
348 /**< AES algorithm in CCM mode. */
349 RTE_CRYPTO_AEAD_AES_GCM,
350 /**< AES algorithm in GCM mode. */
351 RTE_CRYPTO_AEAD_LIST_END
354 /** AEAD algorithm name strings */
356 rte_crypto_aead_algorithm_strings[];
358 /** Symmetric AEAD Operations */
359 enum rte_crypto_aead_operation {
360 RTE_CRYPTO_AEAD_OP_ENCRYPT,
361 /**< Encrypt and generate digest */
362 RTE_CRYPTO_AEAD_OP_DECRYPT
363 /**< Verify digest and decrypt */
366 /** Authentication operation name strings */
368 rte_crypto_aead_operation_strings[];
370 struct rte_crypto_aead_xform {
371 enum rte_crypto_aead_operation op;
372 /**< AEAD operation type */
373 enum rte_crypto_aead_algorithm algo;
374 /**< AEAD algorithm selection */
377 const uint8_t *data; /**< pointer to key data */
378 uint16_t length; /**< key length in bytes */
383 /**< Starting point for Initialisation Vector or Counter,
384 * specified as number of bytes from start of crypto
385 * operation (rte_crypto_op).
387 * - For CCM mode, the first byte is reserved, and the
388 * nonce should be written starting at &iv[1] (to allow
389 * space for the implementation to write in the flags
390 * in the first byte). Note that a full 16 bytes should
391 * be allocated, even though the length field will
392 * have a value less than this.
394 * For optimum performance, the data pointed to SHOULD
398 /**< Length of valid IV data.
400 * - For GCM mode, this is either:
401 * 1) Number greater or equal to one, which means that IV
402 * is used and J0 will be computed internally, a minimum
403 * of 16 bytes must be allocated.
404 * 2) Zero, in which case data points to J0. In this case
405 * 16 bytes of J0 should be passed where J0 is defined
408 * - For CCM mode, this is the length of the nonce,
409 * which can be in the range 7 to 13 inclusive.
411 } iv; /**< Initialisation vector parameters */
413 uint16_t digest_length;
416 /**< The length of the additional authenticated data (AAD) in bytes.
417 * For CCM mode, this is the length of the actual AAD, even though
418 * it is required to reserve 18 bytes before the AAD and padding
419 * at the end of it, so a multiple of 16 bytes is allocated.
423 /** Crypto transformation types */
424 enum rte_crypto_sym_xform_type {
425 RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED = 0, /**< No xform specified */
426 RTE_CRYPTO_SYM_XFORM_AUTH, /**< Authentication xform */
427 RTE_CRYPTO_SYM_XFORM_CIPHER, /**< Cipher xform */
428 RTE_CRYPTO_SYM_XFORM_AEAD /**< AEAD xform */
432 * Symmetric crypto transform structure.
434 * This is used to specify the crypto transforms required, multiple transforms
435 * can be chained together to specify a chain transforms such as authentication
436 * then cipher, or cipher then authentication. Each transform structure can
437 * hold a single transform, the type field is used to specify which transform
438 * is contained within the union
440 struct rte_crypto_sym_xform {
441 struct rte_crypto_sym_xform *next;
442 /**< next xform in chain */
443 enum rte_crypto_sym_xform_type type
447 struct rte_crypto_auth_xform auth;
448 /**< Authentication / hash xform */
449 struct rte_crypto_cipher_xform cipher;
451 struct rte_crypto_aead_xform aead;
456 struct rte_cryptodev_sym_session;
459 * Symmetric Cryptographic Operation.
461 * This structure contains data relating to performing symmetric cryptographic
462 * processing on a referenced mbuf data buffer.
464 * When a symmetric crypto operation is enqueued with the device for processing
465 * it must have a valid *rte_mbuf* structure attached, via m_src parameter,
466 * which contains the source data which the crypto operation is to be performed
468 * While the mbuf is in use by a crypto operation no part of the mbuf should be
469 * changed by the application as the device may read or write to any part of the
470 * mbuf. In the case of hardware crypto devices some or all of the mbuf
471 * may be DMAed in and out of the device, so writing over the original data,
472 * though only the part specified by the rte_crypto_sym_op for transformation
474 * Out-of-place (OOP) operation, where the source mbuf is different to the
475 * destination mbuf, is a special case. Data will be copied from m_src to m_dst.
476 * The part copied includes all the parts of the source mbuf that will be
477 * operated on, based on the cipher.data.offset+cipher.data.length and
478 * auth.data.offset+auth.data.length values in the rte_crypto_sym_op. The part
479 * indicated by the cipher parameters will be transformed, any extra data around
480 * this indicated by the auth parameters will be copied unchanged from source to
482 * Also in OOP operation the cipher.data.offset and auth.data.offset apply to
483 * both source and destination mbufs. As these offsets are relative to the
484 * data_off parameter in each mbuf this can result in the data written to the
485 * destination buffer being at a different alignment, relative to buffer start,
486 * to the data in the source buffer.
488 struct rte_crypto_sym_op {
489 struct rte_mbuf *m_src; /**< source mbuf */
490 struct rte_mbuf *m_dst; /**< destination mbuf */
494 struct rte_cryptodev_sym_session *session;
495 /**< Handle for the initialised session context */
496 struct rte_crypto_sym_xform *xform;
497 /**< Session-less API crypto operation parameters */
498 struct rte_security_session *sec_session;
499 /**< Handle for the initialised security session context */
507 /**< Starting point for AEAD processing, specified as
508 * number of bytes from start of packet in source
512 /**< The message length, in bytes, of the source buffer
513 * on which the cryptographic operation will be
514 * computed. This must be a multiple of the block size
516 } data; /**< Data offsets and length for AEAD */
519 /**< This points to the location where the digest result
520 * should be inserted (in the case of digest generation)
521 * or where the purported digest exists (in the case of
522 * digest verification).
524 * At session creation time, the client specified the
525 * digest result length with the digest_length member
526 * of the @ref rte_crypto_auth_xform structure. For
527 * physical crypto devices the caller must allocate at
528 * least digest_length of physically contiguous memory
531 * For digest generation, the digest result will
532 * overwrite any data at this location.
535 * For GCM (@ref RTE_CRYPTO_AEAD_AES_GCM), for
536 * "digest result" read "authentication tag T".
538 rte_iova_t phys_addr;
539 /**< Physical address of digest */
540 } digest; /**< Digest parameters */
543 /**< Pointer to Additional Authenticated Data (AAD)
544 * needed for authenticated cipher mechanisms (CCM and
547 * Specifically for CCM (@ref RTE_CRYPTO_AEAD_AES_CCM),
548 * the caller should setup this field as follows:
550 * - the additional authentication data itself should
551 * be written starting at an offset of 18 bytes into
552 * the array, leaving room for the first block (16 bytes)
553 * and the length encoding in the first two bytes of the
556 * - the array should be big enough to hold the above
557 * fields, plus any padding to round this up to the
558 * nearest multiple of the block size (16 bytes).
559 * Padding will be added by the implementation.
561 * - Note that PMDs may modify the memory reserved
562 * (first 18 bytes and the final padding).
564 * Finally, for GCM (@ref RTE_CRYPTO_AEAD_AES_GCM), the
565 * caller should setup this field as follows:
567 * - the AAD is written in starting at byte 0
568 * - the array must be big enough to hold the AAD, plus
569 * any space to round this up to the nearest multiple
570 * of the block size (16 bytes).
573 rte_iova_t phys_addr; /**< physical address */
575 /**< Additional authentication parameters */
582 /**< Starting point for cipher processing,
583 * specified as number of bytes from start
584 * of data in the source buffer.
585 * The result of the cipher operation will be
586 * written back into the output buffer
587 * starting at this location.
590 * For SNOW 3G @ RTE_CRYPTO_CIPHER_SNOW3G_UEA2,
591 * KASUMI @ RTE_CRYPTO_CIPHER_KASUMI_F8
592 * and ZUC @ RTE_CRYPTO_CIPHER_ZUC_EEA3,
593 * this field should be in bits.
596 /**< The message length, in bytes, of the
597 * source buffer on which the cryptographic
598 * operation will be computed.
599 * This must be a multiple of the block size
600 * if a block cipher is being used. This is
601 * also the same as the result length.
604 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UEA2,
605 * KASUMI @ RTE_CRYPTO_CIPHER_KASUMI_F8
606 * and ZUC @ RTE_CRYPTO_CIPHER_ZUC_EEA3,
607 * this field should be in bits.
609 } data; /**< Data offsets and length for ciphering */
615 /**< Starting point for hash processing,
616 * specified as number of bytes from start of
617 * packet in source buffer.
620 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2,
621 * KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9
622 * and ZUC @ RTE_CRYPTO_AUTH_ZUC_EIA3,
623 * this field should be in bits.
626 * For KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9,
627 * this offset should be such that
628 * data to authenticate starts at COUNT.
631 /**< The message length, in bytes, of the source
632 * buffer that the hash will be computed on.
635 * For SNOW 3G @ RTE_CRYPTO_AUTH_SNOW3G_UIA2,
636 * KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9
637 * and ZUC @ RTE_CRYPTO_AUTH_ZUC_EIA3,
638 * this field should be in bits.
641 * For KASUMI @ RTE_CRYPTO_AUTH_KASUMI_F9,
642 * the length should include the COUNT,
643 * FRESH, message, direction bit and padding
644 * (to be multiple of 8 bits).
647 /**< Data offsets and length for authentication */
651 /**< This points to the location where
652 * the digest result should be inserted
653 * (in the case of digest generation)
654 * or where the purported digest exists
655 * (in the case of digest verification).
657 * At session creation time, the client
658 * specified the digest result length with
659 * the digest_length member of the
660 * @ref rte_crypto_auth_xform structure.
661 * For physical crypto devices the caller
662 * must allocate at least digest_length of
663 * physically contiguous memory at this
666 * For digest generation, the digest result
667 * will overwrite any data at this location.
670 * Digest-encrypted case.
671 * Digest can be generated, appended to
672 * the end of raw data and encrypted
673 * together using chained digest
675 * (@ref RTE_CRYPTO_AUTH_OP_GENERATE)
677 * (@ref RTE_CRYPTO_CIPHER_OP_ENCRYPT)
678 * xforms. Similarly, authentication
679 * of the raw data against appended,
680 * decrypted digest, can be performed
682 * (@ref RTE_CRYPTO_CIPHER_OP_DECRYPT)
683 * and digest verification
684 * (@ref RTE_CRYPTO_AUTH_OP_VERIFY)
686 * To perform those operations, a few
687 * additional conditions must be met:
688 * - caller must allocate at least
689 * digest_length of memory at the end of
690 * source and (in case of out-of-place
691 * operations) destination buffer; those
692 * buffers can be linear or split using
693 * scatter-gather lists,
694 * - digest data pointer must point to
695 * the end of source or (in case of
696 * out-of-place operations) destination
697 * data, which is pointer to the
698 * data buffer + auth.data.offset +
700 * - cipher.data.offset +
701 * cipher.data.length must be greater
702 * than auth.data.offset +
703 * auth.data.length and is typically
704 * equal to auth.data.offset +
705 * auth.data.length + digest_length.
707 * Note, that for security reasons, it
708 * is PMDs' responsibility to not
709 * leave an unencrypted digest in any
710 * buffer after performing auth-cipher
714 rte_iova_t phys_addr;
715 /**< Physical address of digest */
716 } digest; /**< Digest parameters */
724 * Reset the fields of a symmetric operation to their default values.
726 * @param op The crypto operation to be reset.
729 __rte_crypto_sym_op_reset(struct rte_crypto_sym_op *op)
731 memset(op, 0, sizeof(*op));
736 * Allocate space for symmetric crypto xforms in the private data space of the
737 * crypto operation. This also defaults the crypto xform type to
738 * RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED and configures the chaining of the xforms
739 * in the crypto operation
742 * - On success returns pointer to first crypto xform in crypto operations chain
743 * - On failure returns NULL
745 static inline struct rte_crypto_sym_xform *
746 __rte_crypto_sym_op_sym_xforms_alloc(struct rte_crypto_sym_op *sym_op,
747 void *priv_data, uint8_t nb_xforms)
749 struct rte_crypto_sym_xform *xform;
751 sym_op->xform = xform = (struct rte_crypto_sym_xform *)priv_data;
754 xform->type = RTE_CRYPTO_SYM_XFORM_NOT_SPECIFIED;
755 xform = xform->next = --nb_xforms > 0 ? xform + 1 : NULL;
758 return sym_op->xform;
763 * Attach a session to a symmetric crypto operation
765 * @param sym_op crypto operation
766 * @param sess cryptodev session
769 __rte_crypto_sym_op_attach_sym_session(struct rte_crypto_sym_op *sym_op,
770 struct rte_cryptodev_sym_session *sess)
772 sym_op->session = sess;
782 #endif /* _RTE_CRYPTO_SYM_H_ */