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"
27 /** Crypto operation types */
28 enum rte_crypto_op_type {
29 RTE_CRYPTO_OP_TYPE_UNDEFINED,
30 /**< Undefined operation type */
31 RTE_CRYPTO_OP_TYPE_SYMMETRIC,
32 /**< Symmetric operation */
35 /** Status of crypto operation */
36 enum rte_crypto_op_status {
37 RTE_CRYPTO_OP_STATUS_SUCCESS,
38 /**< Operation completed successfully */
39 RTE_CRYPTO_OP_STATUS_NOT_PROCESSED,
40 /**< Operation has not yet been processed by a crypto device */
41 RTE_CRYPTO_OP_STATUS_AUTH_FAILED,
42 /**< Authentication verification failed */
43 RTE_CRYPTO_OP_STATUS_INVALID_SESSION,
45 * Symmetric operation failed due to invalid session arguments, or if
46 * in session-less mode, failed to allocate private operation material.
48 RTE_CRYPTO_OP_STATUS_INVALID_ARGS,
49 /**< Operation failed due to invalid arguments in request */
50 RTE_CRYPTO_OP_STATUS_ERROR,
51 /**< Error handling operation */
55 * Crypto operation session type. This is used to specify whether a crypto
56 * operation has session structure attached for immutable parameters or if all
57 * operation information is included in the operation data structure.
59 enum rte_crypto_op_sess_type {
60 RTE_CRYPTO_OP_WITH_SESSION, /**< Session based crypto operation */
61 RTE_CRYPTO_OP_SESSIONLESS, /**< Session-less crypto operation */
62 RTE_CRYPTO_OP_SECURITY_SESSION /**< Security session crypto operation */
66 * Cryptographic Operation.
68 * This structure contains data relating to performing cryptographic
69 * operations. This operation structure is used to contain any operation which
70 * is supported by the cryptodev API, PMDs should check the type parameter to
71 * verify that the operation is a support function of the device. Crypto
72 * operations are enqueued and dequeued in crypto PMDs using the
73 * rte_cryptodev_enqueue_burst() / rte_cryptodev_dequeue_burst() .
75 struct rte_crypto_op {
82 /**< operation type */
85 * operation status - this is reset to
86 * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on allocation
87 * from mempool and will be set to
88 * RTE_CRYPTO_OP_STATUS_SUCCESS after crypto operation
89 * is successfully processed by a crypto PMD
92 /**< operation session type */
94 /**< Reserved bytes to fill 64 bits for
97 uint16_t private_data_offset;
98 /**< Offset to indicate start of private data (if any).
99 * The offset is counted from the start of the
100 * rte_crypto_op including IV.
101 * The private data may be used by the application
102 * to store information which should remain untouched
103 * in the library/driver
107 struct rte_mempool *mempool;
108 /**< crypto operation mempool which operation is allocated from */
110 rte_iova_t phys_addr;
111 /**< physical address of crypto operation */
115 struct rte_crypto_sym_op sym[0];
116 /**< Symmetric operation parameters */
117 }; /**< operation specific parameters */
121 * Reset the fields of a crypto operation to their default values.
123 * @param op The crypto operation to be reset.
124 * @param type The crypto operation type.
127 __rte_crypto_op_reset(struct rte_crypto_op *op, enum rte_crypto_op_type type)
130 op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
131 op->sess_type = RTE_CRYPTO_OP_SESSIONLESS;
134 case RTE_CRYPTO_OP_TYPE_SYMMETRIC:
135 __rte_crypto_sym_op_reset(op->sym);
137 case RTE_CRYPTO_OP_TYPE_UNDEFINED:
144 * Private data structure belonging to a crypto symmetric operation pool.
146 struct rte_crypto_op_pool_private {
147 enum rte_crypto_op_type type;
148 /**< Crypto op pool type operation. */
150 /**< Size of private area in each crypto operation. */
155 * Returns the size of private data allocated with each rte_crypto_op object by
158 * @param mempool rte_crypto_op mempool
160 * @return private data size
162 static inline uint16_t
163 __rte_crypto_op_get_priv_data_size(struct rte_mempool *mempool)
165 struct rte_crypto_op_pool_private *priv =
166 (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
168 return priv->priv_size;
173 * Creates a crypto operation pool
175 * @param name pool name
176 * @param type crypto operation type, use
177 * RTE_CRYPTO_OP_TYPE_UNDEFINED for a pool which
178 * supports all operation types
179 * @param nb_elts number of elements in pool
180 * @param cache_size Number of elements to cache on lcore, see
181 * *rte_mempool_create* for further details about
183 * @param priv_size Size of private data to allocate with each
185 * @param socket_id Socket to allocate memory on
188 * - On success pointer to mempool
191 extern struct rte_mempool *
192 rte_crypto_op_pool_create(const char *name, enum rte_crypto_op_type type,
193 unsigned nb_elts, unsigned cache_size, uint16_t priv_size,
197 * Bulk allocate raw element from mempool and return as crypto operations
199 * @param mempool crypto operation mempool.
200 * @param type crypto operation type.
201 * @param ops Array to place allocated crypto operations
202 * @param nb_ops Number of crypto operations to allocate
205 * - On success returns number of ops allocated
208 __rte_crypto_op_raw_bulk_alloc(struct rte_mempool *mempool,
209 enum rte_crypto_op_type type,
210 struct rte_crypto_op **ops, uint16_t nb_ops)
212 struct rte_crypto_op_pool_private *priv;
214 priv = (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
215 if (unlikely(priv->type != type &&
216 priv->type != RTE_CRYPTO_OP_TYPE_UNDEFINED))
219 if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0)
226 * Allocate a crypto operation from a mempool with default parameters set
228 * @param mempool crypto operation mempool
229 * @param type operation type to allocate
232 * - On success returns a valid rte_crypto_op structure
233 * - On failure returns NULL
235 static inline struct rte_crypto_op *
236 rte_crypto_op_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type)
238 struct rte_crypto_op *op = NULL;
241 retval = __rte_crypto_op_raw_bulk_alloc(mempool, type, &op, 1);
242 if (unlikely(retval != 1))
245 __rte_crypto_op_reset(op, type);
252 * Bulk allocate crypto operations from a mempool with default parameters set
254 * @param mempool crypto operation mempool
255 * @param type operation type to allocate
256 * @param ops Array to place allocated crypto operations
257 * @param nb_ops Number of crypto operations to allocate
260 * - nb_ops if the number of operations requested were allocated.
261 * - 0 if the requested number of ops are not available.
262 * None are allocated in this case.
265 static inline unsigned
266 rte_crypto_op_bulk_alloc(struct rte_mempool *mempool,
267 enum rte_crypto_op_type type,
268 struct rte_crypto_op **ops, uint16_t nb_ops)
272 if (unlikely(__rte_crypto_op_raw_bulk_alloc(mempool, type, ops, nb_ops)
276 for (i = 0; i < nb_ops; i++)
277 __rte_crypto_op_reset(ops[i], type);
285 * Returns a pointer to the private data of a crypto operation if
286 * that operation has enough capacity for requested size.
288 * @param op crypto operation.
289 * @param size size of space requested in private data.
292 * - if sufficient space available returns pointer to start of private data
293 * - if insufficient space returns NULL
296 __rte_crypto_op_get_priv_data(struct rte_crypto_op *op, uint32_t size)
300 if (likely(op->mempool != NULL)) {
301 priv_size = __rte_crypto_op_get_priv_data_size(op->mempool);
303 if (likely(priv_size >= size))
304 return (void *)((uint8_t *)(op + 1) +
305 sizeof(struct rte_crypto_sym_op));
312 * free crypto operation structure
313 * If operation has been allocate from a rte_mempool, then the operation will
314 * be returned to the mempool.
316 * @param op symmetric crypto operation
319 rte_crypto_op_free(struct rte_crypto_op *op)
321 if (op != NULL && op->mempool != NULL)
322 rte_mempool_put(op->mempool, op);
326 * Allocate a symmetric crypto operation in the private data of an mbuf.
328 * @param m mbuf which is associated with the crypto operation, the
329 * operation will be allocated in the private data of that
333 * - On success returns a pointer to the crypto operation.
334 * - On failure returns NULL.
336 static inline struct rte_crypto_op *
337 rte_crypto_sym_op_alloc_from_mbuf_priv_data(struct rte_mbuf *m)
339 if (unlikely(m == NULL))
343 * check that the mbuf's private data size is sufficient to contain a
346 if (unlikely(m->priv_size < (sizeof(struct rte_crypto_op) +
347 sizeof(struct rte_crypto_sym_op))))
350 /* private data starts immediately after the mbuf header in the mbuf. */
351 struct rte_crypto_op *op = (struct rte_crypto_op *)(m + 1);
353 __rte_crypto_op_reset(op, RTE_CRYPTO_OP_TYPE_SYMMETRIC);
362 * Allocate space for symmetric crypto xforms in the private data space of the
363 * crypto operation. This also defaults the crypto xform type and configures
364 * the chaining of the xforms in the crypto operation
367 * - On success returns pointer to first crypto xform in crypto operations chain
368 * - On failure returns NULL
370 static inline struct rte_crypto_sym_xform *
371 rte_crypto_op_sym_xforms_alloc(struct rte_crypto_op *op, uint8_t nb_xforms)
376 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
379 size = sizeof(struct rte_crypto_sym_xform) * nb_xforms;
381 priv_data = __rte_crypto_op_get_priv_data(op, size);
382 if (priv_data == NULL)
385 return __rte_crypto_sym_op_sym_xforms_alloc(op->sym, priv_data,
391 * Attach a session to a crypto operation
393 * @param op crypto operation, must be of type symmetric
394 * @param sess cryptodev session
397 rte_crypto_op_attach_sym_session(struct rte_crypto_op *op,
398 struct rte_cryptodev_sym_session *sess)
400 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
403 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
405 return __rte_crypto_sym_op_attach_sym_session(op->sym, sess);
412 #endif /* _RTE_CRYPTO_H_ */