1 /* SPDX-License-Identifier: BSD-3-Clause
2 * Copyright(c) 2016-2017 Intel Corporation
11 * RTE Cryptography Common Definitions
21 #include <rte_memory.h>
22 #include <rte_mempool.h>
23 #include <rte_common.h>
25 #include "rte_crypto_sym.h"
26 #include "rte_crypto_asym.h"
28 /** Crypto operation types */
29 enum rte_crypto_op_type {
30 RTE_CRYPTO_OP_TYPE_UNDEFINED,
31 /**< Undefined operation type */
32 RTE_CRYPTO_OP_TYPE_SYMMETRIC,
33 /**< Symmetric operation */
34 RTE_CRYPTO_OP_TYPE_ASYMMETRIC
35 /**< Asymmetric operation */
38 /** Status of crypto operation */
39 enum rte_crypto_op_status {
40 RTE_CRYPTO_OP_STATUS_SUCCESS,
41 /**< Operation completed successfully */
42 RTE_CRYPTO_OP_STATUS_NOT_PROCESSED,
43 /**< Operation has not yet been processed by a crypto device */
44 RTE_CRYPTO_OP_STATUS_AUTH_FAILED,
45 /**< Authentication verification failed */
46 RTE_CRYPTO_OP_STATUS_INVALID_SESSION,
48 * Symmetric operation failed due to invalid session arguments, or if
49 * in session-less mode, failed to allocate private operation material.
51 RTE_CRYPTO_OP_STATUS_INVALID_ARGS,
52 /**< Operation failed due to invalid arguments in request */
53 RTE_CRYPTO_OP_STATUS_ERROR,
54 /**< Error handling operation */
58 * Crypto operation session type. This is used to specify whether a crypto
59 * operation has session structure attached for immutable parameters or if all
60 * operation information is included in the operation data structure.
62 enum rte_crypto_op_sess_type {
63 RTE_CRYPTO_OP_WITH_SESSION, /**< Session based crypto operation */
64 RTE_CRYPTO_OP_SESSIONLESS, /**< Session-less crypto operation */
65 RTE_CRYPTO_OP_SECURITY_SESSION /**< Security session crypto operation */
69 * Cryptographic Operation.
71 * This structure contains data relating to performing cryptographic
72 * operations. This operation structure is used to contain any operation which
73 * is supported by the cryptodev API, PMDs should check the type parameter to
74 * verify that the operation is a support function of the device. Crypto
75 * operations are enqueued and dequeued in crypto PMDs using the
76 * rte_cryptodev_enqueue_burst() / rte_cryptodev_dequeue_burst() .
78 struct rte_crypto_op {
85 /**< operation type */
88 * operation status - this is reset to
89 * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on allocation
90 * from mempool and will be set to
91 * RTE_CRYPTO_OP_STATUS_SUCCESS after crypto operation
92 * is successfully processed by a crypto PMD
95 /**< operation session type */
97 /**< Reserved bytes to fill 64 bits for
100 uint16_t private_data_offset;
101 /**< Offset to indicate start of private data (if any).
102 * The offset is counted from the start of the
103 * rte_crypto_op including IV.
104 * The private data may be used by the application
105 * to store information which should remain untouched
106 * in the library/driver
110 struct rte_mempool *mempool;
111 /**< crypto operation mempool which operation is allocated from */
113 rte_iova_t phys_addr;
114 /**< physical address of crypto operation */
118 struct rte_crypto_sym_op sym[0];
119 /**< Symmetric operation parameters */
121 struct rte_crypto_asym_op asym[0];
122 /**< Asymmetric operation parameters */
124 }; /**< operation specific parameters */
128 * Reset the fields of a crypto operation to their default values.
130 * @param op The crypto operation to be reset.
131 * @param type The crypto operation type.
134 __rte_crypto_op_reset(struct rte_crypto_op *op, enum rte_crypto_op_type type)
137 op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
138 op->sess_type = RTE_CRYPTO_OP_SESSIONLESS;
141 case RTE_CRYPTO_OP_TYPE_SYMMETRIC:
142 __rte_crypto_sym_op_reset(op->sym);
144 case RTE_CRYPTO_OP_TYPE_ASYMMETRIC:
145 memset(op->asym, 0, sizeof(struct rte_crypto_asym_op));
147 case RTE_CRYPTO_OP_TYPE_UNDEFINED:
154 * Private data structure belonging to a crypto symmetric operation pool.
156 struct rte_crypto_op_pool_private {
157 enum rte_crypto_op_type type;
158 /**< Crypto op pool type operation. */
160 /**< Size of private area in each crypto operation. */
165 * Returns the size of private data allocated with each rte_crypto_op object by
168 * @param mempool rte_crypto_op mempool
170 * @return private data size
172 static inline uint16_t
173 __rte_crypto_op_get_priv_data_size(struct rte_mempool *mempool)
175 struct rte_crypto_op_pool_private *priv =
176 (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
178 return priv->priv_size;
183 * Creates a crypto operation pool
185 * @param name pool name
186 * @param type crypto operation type, use
187 * RTE_CRYPTO_OP_TYPE_UNDEFINED for a pool which
188 * supports all operation types
189 * @param nb_elts number of elements in pool
190 * @param cache_size Number of elements to cache on lcore, see
191 * *rte_mempool_create* for further details about
193 * @param priv_size Size of private data to allocate with each
195 * @param socket_id Socket to allocate memory on
198 * - On success pointer to mempool
201 extern struct rte_mempool *
202 rte_crypto_op_pool_create(const char *name, enum rte_crypto_op_type type,
203 unsigned nb_elts, unsigned cache_size, uint16_t priv_size,
207 * Bulk allocate raw element from mempool and return as crypto operations
209 * @param mempool crypto operation mempool.
210 * @param type crypto operation type.
211 * @param ops Array to place allocated crypto operations
212 * @param nb_ops Number of crypto operations to allocate
215 * - On success returns number of ops allocated
218 __rte_crypto_op_raw_bulk_alloc(struct rte_mempool *mempool,
219 enum rte_crypto_op_type type,
220 struct rte_crypto_op **ops, uint16_t nb_ops)
222 struct rte_crypto_op_pool_private *priv;
224 priv = (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
225 if (unlikely(priv->type != type &&
226 priv->type != RTE_CRYPTO_OP_TYPE_UNDEFINED))
229 if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0)
236 * Allocate a crypto operation from a mempool with default parameters set
238 * @param mempool crypto operation mempool
239 * @param type operation type to allocate
242 * - On success returns a valid rte_crypto_op structure
243 * - On failure returns NULL
245 static inline struct rte_crypto_op *
246 rte_crypto_op_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type)
248 struct rte_crypto_op *op = NULL;
251 retval = __rte_crypto_op_raw_bulk_alloc(mempool, type, &op, 1);
252 if (unlikely(retval != 1))
255 __rte_crypto_op_reset(op, type);
262 * Bulk allocate crypto operations from a mempool with default parameters set
264 * @param mempool crypto operation mempool
265 * @param type operation type to allocate
266 * @param ops Array to place allocated crypto operations
267 * @param nb_ops Number of crypto operations to allocate
270 * - nb_ops if the number of operations requested were allocated.
271 * - 0 if the requested number of ops are not available.
272 * None are allocated in this case.
275 static inline unsigned
276 rte_crypto_op_bulk_alloc(struct rte_mempool *mempool,
277 enum rte_crypto_op_type type,
278 struct rte_crypto_op **ops, uint16_t nb_ops)
282 if (unlikely(__rte_crypto_op_raw_bulk_alloc(mempool, type, ops, nb_ops)
286 for (i = 0; i < nb_ops; i++)
287 __rte_crypto_op_reset(ops[i], type);
295 * Returns a pointer to the private data of a crypto operation if
296 * that operation has enough capacity for requested size.
298 * @param op crypto operation.
299 * @param size size of space requested in private data.
302 * - if sufficient space available returns pointer to start of private data
303 * - if insufficient space returns NULL
306 __rte_crypto_op_get_priv_data(struct rte_crypto_op *op, uint32_t size)
310 if (likely(op->mempool != NULL)) {
311 priv_size = __rte_crypto_op_get_priv_data_size(op->mempool);
313 if (likely(priv_size >= size)) {
314 if (op->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC)
315 return (void *)((uint8_t *)(op + 1) +
316 sizeof(struct rte_crypto_sym_op));
317 if (op->type == RTE_CRYPTO_OP_TYPE_ASYMMETRIC)
318 return (void *)((uint8_t *)(op + 1) +
319 sizeof(struct rte_crypto_asym_op));
327 * free crypto operation structure
328 * If operation has been allocate from a rte_mempool, then the operation will
329 * be returned to the mempool.
331 * @param op symmetric crypto operation
334 rte_crypto_op_free(struct rte_crypto_op *op)
336 if (op != NULL && op->mempool != NULL)
337 rte_mempool_put(op->mempool, op);
341 * Allocate a symmetric crypto operation in the private data of an mbuf.
343 * @param m mbuf which is associated with the crypto operation, the
344 * operation will be allocated in the private data of that
348 * - On success returns a pointer to the crypto operation.
349 * - On failure returns NULL.
351 static inline struct rte_crypto_op *
352 rte_crypto_sym_op_alloc_from_mbuf_priv_data(struct rte_mbuf *m)
354 if (unlikely(m == NULL))
358 * check that the mbuf's private data size is sufficient to contain a
361 if (unlikely(m->priv_size < (sizeof(struct rte_crypto_op) +
362 sizeof(struct rte_crypto_sym_op))))
365 /* private data starts immediately after the mbuf header in the mbuf. */
366 struct rte_crypto_op *op = (struct rte_crypto_op *)(m + 1);
368 __rte_crypto_op_reset(op, RTE_CRYPTO_OP_TYPE_SYMMETRIC);
377 * Allocate space for symmetric crypto xforms in the private data space of the
378 * crypto operation. This also defaults the crypto xform type and configures
379 * the chaining of the xforms in the crypto operation
382 * - On success returns pointer to first crypto xform in crypto operations chain
383 * - On failure returns NULL
385 static inline struct rte_crypto_sym_xform *
386 rte_crypto_op_sym_xforms_alloc(struct rte_crypto_op *op, uint8_t nb_xforms)
391 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
394 size = sizeof(struct rte_crypto_sym_xform) * nb_xforms;
396 priv_data = __rte_crypto_op_get_priv_data(op, size);
397 if (priv_data == NULL)
400 return __rte_crypto_sym_op_sym_xforms_alloc(op->sym, priv_data,
406 * Attach a session to a crypto operation
408 * @param op crypto operation, must be of type symmetric
409 * @param sess cryptodev session
412 rte_crypto_op_attach_sym_session(struct rte_crypto_op *op,
413 struct rte_cryptodev_sym_session *sess)
415 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
418 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
420 return __rte_crypto_sym_op_attach_sym_session(op->sym, sess);
424 * Attach a asymmetric session to a crypto operation
426 * @param op crypto operation, must be of type asymmetric
427 * @param sess cryptodev session
430 rte_crypto_op_attach_asym_session(struct rte_crypto_op *op,
431 struct rte_cryptodev_asym_session *sess)
433 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_ASYMMETRIC))
436 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
437 op->asym->session = sess;
445 #endif /* _RTE_CRYPTO_H_ */