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33 #ifndef _RTE_CRYPTO_H_
34 #define _RTE_CRYPTO_H_
39 * RTE Cryptography Common Definitions
49 #include <rte_memory.h>
50 #include <rte_mempool.h>
51 #include <rte_common.h>
53 #include "rte_crypto_sym.h"
55 /** Crypto operation types */
56 enum rte_crypto_op_type {
57 RTE_CRYPTO_OP_TYPE_UNDEFINED,
58 /**< Undefined operation type */
59 RTE_CRYPTO_OP_TYPE_SYMMETRIC,
60 /**< Symmetric operation */
63 /** Status of crypto operation */
64 enum rte_crypto_op_status {
65 RTE_CRYPTO_OP_STATUS_SUCCESS,
66 /**< Operation completed successfully */
67 RTE_CRYPTO_OP_STATUS_NOT_PROCESSED,
68 /**< Operation has not yet been processed by a crypto device */
69 RTE_CRYPTO_OP_STATUS_ENQUEUED,
70 /**< Operation is enqueued on device */
71 RTE_CRYPTO_OP_STATUS_AUTH_FAILED,
72 /**< Authentication verification failed */
73 RTE_CRYPTO_OP_STATUS_INVALID_SESSION,
75 * Symmetric operation failed due to invalid session arguments, or if
76 * in session-less mode, failed to allocate private operation material.
78 RTE_CRYPTO_OP_STATUS_INVALID_ARGS,
79 /**< Operation failed due to invalid arguments in request */
80 RTE_CRYPTO_OP_STATUS_ERROR,
81 /**< Error handling operation */
85 * Crypto operation session type. This is used to specify whether a crypto
86 * operation has session structure attached for immutable parameters or if all
87 * operation information is included in the operation data structure.
89 enum rte_crypto_op_sess_type {
90 RTE_CRYPTO_OP_WITH_SESSION, /**< Session based crypto operation */
91 RTE_CRYPTO_OP_SESSIONLESS /**< Session-less crypto operation */
95 * Cryptographic Operation.
97 * This structure contains data relating to performing cryptographic
98 * operations. This operation structure is used to contain any operation which
99 * is supported by the cryptodev API, PMDs should check the type parameter to
100 * verify that the operation is a support function of the device. Crypto
101 * operations are enqueued and dequeued in crypto PMDs using the
102 * rte_cryptodev_enqueue_burst() / rte_cryptodev_dequeue_burst() .
104 struct rte_crypto_op {
106 /**< operation type */
109 * operation status - this is reset to
110 * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on allocation from mempool and
111 * will be set to RTE_CRYPTO_OP_STATUS_SUCCESS after crypto operation
112 * is successfully processed by a crypto PMD
115 /**< operation session type */
118 /**< Reserved bytes to fill 64 bits for future additions */
119 struct rte_mempool *mempool;
120 /**< crypto operation mempool which operation is allocated from */
122 phys_addr_t phys_addr;
123 /**< physical address of crypto operation */
127 struct rte_crypto_sym_op sym[0];
128 /**< Symmetric operation parameters */
129 }; /**< operation specific parameters */
133 * Reset the fields of a crypto operation to their default values.
135 * @param op The crypto operation to be reset.
136 * @param type The crypto operation type.
139 __rte_crypto_op_reset(struct rte_crypto_op *op, enum rte_crypto_op_type type)
142 op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
143 op->sess_type = RTE_CRYPTO_OP_SESSIONLESS;
146 case RTE_CRYPTO_OP_TYPE_SYMMETRIC:
147 __rte_crypto_sym_op_reset(op->sym);
155 * Private data structure belonging to a crypto symmetric operation pool.
157 struct rte_crypto_op_pool_private {
158 enum rte_crypto_op_type type;
159 /**< Crypto op pool type operation. */
161 /**< Size of private area in each crypto operation. */
166 * Returns the size of private data allocated with each rte_crypto_op object by
169 * @param mempool rte_crypto_op mempool
171 * @return private data size
173 static inline uint16_t
174 __rte_crypto_op_get_priv_data_size(struct rte_mempool *mempool)
176 struct rte_crypto_op_pool_private *priv =
177 (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
179 return priv->priv_size;
184 * Creates a crypto operation pool
186 * @param name pool name
187 * @param type crypto operation type, use
188 * RTE_CRYPTO_OP_TYPE_UNDEFINED for a pool which
189 * supports all operation types
190 * @param nb_elts number of elements in pool
191 * @param cache_size Number of elements to cache on lcore, see
192 * *rte_mempool_create* for further details about
194 * @param priv_size Size of private data to allocate with each
196 * @param socket_id Socket to allocate memory on
199 * - On success pointer to mempool
202 extern struct rte_mempool *
203 rte_crypto_op_pool_create(const char *name, enum rte_crypto_op_type type,
204 unsigned nb_elts, unsigned cache_size, uint16_t priv_size,
208 * Bulk allocate raw element from mempool and return as crypto operations
210 * @param mempool crypto operation mempool.
211 * @param type crypto operation type.
212 * @param ops Array to place allocated crypto operations
213 * @param nb_ops Number of crypto operations to allocate
216 * - On success returns number of ops allocated
219 __rte_crypto_op_raw_bulk_alloc(struct rte_mempool *mempool,
220 enum rte_crypto_op_type type,
221 struct rte_crypto_op **ops, uint16_t nb_ops)
223 struct rte_crypto_op_pool_private *priv;
225 priv = (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool);
226 if (unlikely(priv->type != type &&
227 priv->type != RTE_CRYPTO_OP_TYPE_UNDEFINED))
230 if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0)
237 * Allocate a crypto operation from a mempool with default parameters set
239 * @param mempool crypto operation mempool
240 * @param type operation type to allocate
243 * - On success returns a valid rte_crypto_op structure
244 * - On failure returns NULL
246 static inline struct rte_crypto_op *
247 rte_crypto_op_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type)
249 struct rte_crypto_op *op = NULL;
252 retval = __rte_crypto_op_raw_bulk_alloc(mempool, type, &op, 1);
253 if (unlikely(retval != 1))
256 __rte_crypto_op_reset(op, type);
263 * Bulk allocate crypto operations from a mempool with default parameters set
265 * @param mempool crypto operation mempool
266 * @param type operation type to allocate
267 * @param ops Array to place allocated crypto operations
268 * @param nb_ops Number of crypto operations to allocate
271 * - On success returns a valid rte_crypto_op structure
272 * - On failure returns NULL
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 return (void *)((uint8_t *)(op + 1) +
315 sizeof(struct rte_crypto_sym_op));
322 * free crypto operation structure
323 * If operation has been allocate from a rte_mempool, then the operation will
324 * be returned to the mempool.
326 * @param op symmetric crypto operation
329 rte_crypto_op_free(struct rte_crypto_op *op)
331 if (op != NULL && op->mempool != NULL)
332 rte_mempool_put(op->mempool, op);
336 * Allocate a symmetric crypto operation in the private data of an mbuf.
338 * @param m mbuf which is associated with the crypto operation, the
339 * operation will be allocated in the private data of that
343 * - On success returns a pointer to the crypto operation.
344 * - On failure returns NULL.
346 static inline struct rte_crypto_op *
347 rte_crypto_sym_op_alloc_from_mbuf_priv_data(struct rte_mbuf *m)
349 if (unlikely(m == NULL))
353 * check that the mbuf's private data size is sufficient to contain a
356 if (unlikely(m->priv_size < (sizeof(struct rte_crypto_op) +
357 sizeof(struct rte_crypto_sym_op))))
360 /* private data starts immediately after the mbuf header in the mbuf. */
361 struct rte_crypto_op *op = (struct rte_crypto_op *)(m + 1);
363 __rte_crypto_op_reset(op, RTE_CRYPTO_OP_TYPE_SYMMETRIC);
372 * Allocate space for symmetric crypto xforms in the private data space of the
373 * crypto operation. This also defaults the crypto xform type and configures
374 * the chaining of the xforms in the crypto operation
377 * - On success returns pointer to first crypto xform in crypto operations chain
378 * - On failure returns NULL
380 static inline struct rte_crypto_sym_xform *
381 rte_crypto_op_sym_xforms_alloc(struct rte_crypto_op *op, uint8_t nb_xforms)
386 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
389 size = sizeof(struct rte_crypto_sym_xform) * nb_xforms;
391 priv_data = __rte_crypto_op_get_priv_data(op, size);
392 if (priv_data == NULL)
395 return __rte_crypto_sym_op_sym_xforms_alloc(op->sym, priv_data,
401 * Attach a session to a crypto operation
403 * @param op crypto operation, must be of type symmetric
404 * @param sess cryptodev session
407 rte_crypto_op_attach_sym_session(struct rte_crypto_op *op,
408 struct rte_cryptodev_sym_session *sess)
410 if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC))
413 op->sess_type = RTE_CRYPTO_OP_WITH_SESSION;
415 return __rte_crypto_sym_op_attach_sym_session(op->sym, sess);
422 #endif /* _RTE_CRYPTO_H_ */