/* SPDX-License-Identifier: BSD-3-Clause * Copyright(c) 2016-2017 Intel Corporation */ #ifndef _RTE_CRYPTO_H_ #define _RTE_CRYPTO_H_ /** * @file rte_crypto.h * * RTE Cryptography Common Definitions * */ #ifdef __cplusplus extern "C" { #endif #include #include #include #include #include "rte_crypto_sym.h" #include "rte_crypto_asym.h" /** Crypto operation types */ enum rte_crypto_op_type { RTE_CRYPTO_OP_TYPE_UNDEFINED, /**< Undefined operation type */ RTE_CRYPTO_OP_TYPE_SYMMETRIC, /**< Symmetric operation */ RTE_CRYPTO_OP_TYPE_ASYMMETRIC /**< Asymmetric operation */ }; /** Status of crypto operation */ enum rte_crypto_op_status { RTE_CRYPTO_OP_STATUS_SUCCESS, /**< Operation completed successfully */ RTE_CRYPTO_OP_STATUS_NOT_PROCESSED, /**< Operation has not yet been processed by a crypto device */ RTE_CRYPTO_OP_STATUS_AUTH_FAILED, /**< Authentication verification failed */ RTE_CRYPTO_OP_STATUS_INVALID_SESSION, /**< * Symmetric operation failed due to invalid session arguments, or if * in session-less mode, failed to allocate private operation material. */ RTE_CRYPTO_OP_STATUS_INVALID_ARGS, /**< Operation failed due to invalid arguments in request */ RTE_CRYPTO_OP_STATUS_ERROR, /**< Error handling operation */ }; /** * Crypto operation session type. This is used to specify whether a crypto * operation has session structure attached for immutable parameters or if all * operation information is included in the operation data structure. */ enum rte_crypto_op_sess_type { RTE_CRYPTO_OP_WITH_SESSION, /**< Session based crypto operation */ RTE_CRYPTO_OP_SESSIONLESS, /**< Session-less crypto operation */ RTE_CRYPTO_OP_SECURITY_SESSION /**< Security session crypto operation */ }; /** * Cryptographic Operation. * * This structure contains data relating to performing cryptographic * operations. This operation structure is used to contain any operation which * is supported by the cryptodev API, PMDs should check the type parameter to * verify that the operation is a support function of the device. Crypto * operations are enqueued and dequeued in crypto PMDs using the * rte_cryptodev_enqueue_burst() / rte_cryptodev_dequeue_burst() . */ struct rte_crypto_op { __extension__ union { uint64_t raw; __extension__ struct { uint8_t type; /**< operation type */ uint8_t status; /**< * operation status - this is reset to * RTE_CRYPTO_OP_STATUS_NOT_PROCESSED on allocation * from mempool and will be set to * RTE_CRYPTO_OP_STATUS_SUCCESS after crypto operation * is successfully processed by a crypto PMD */ uint8_t sess_type; /**< operation session type */ uint8_t reserved[3]; /**< Reserved bytes to fill 64 bits for * future additions */ uint16_t private_data_offset; /**< Offset to indicate start of private data (if any). * The offset is counted from the start of the * rte_crypto_op including IV. * The private data may be used by the application * to store information which should remain untouched * in the library/driver */ }; }; struct rte_mempool *mempool; /**< crypto operation mempool which operation is allocated from */ rte_iova_t phys_addr; /**< physical address of crypto operation */ __extension__ union { struct rte_crypto_sym_op sym[0]; /**< Symmetric operation parameters */ struct rte_crypto_asym_op asym[0]; /**< Asymmetric operation parameters */ }; /**< operation specific parameters */ }; /** * Reset the fields of a crypto operation to their default values. * * @param op The crypto operation to be reset. * @param type The crypto operation type. */ static inline void __rte_crypto_op_reset(struct rte_crypto_op *op, enum rte_crypto_op_type type) { op->type = type; op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED; op->sess_type = RTE_CRYPTO_OP_SESSIONLESS; switch (type) { case RTE_CRYPTO_OP_TYPE_SYMMETRIC: __rte_crypto_sym_op_reset(op->sym); break; case RTE_CRYPTO_OP_TYPE_ASYMMETRIC: memset(op->asym, 0, sizeof(struct rte_crypto_asym_op)); break; case RTE_CRYPTO_OP_TYPE_UNDEFINED: default: break; } } /** * Private data structure belonging to a crypto symmetric operation pool. */ struct rte_crypto_op_pool_private { enum rte_crypto_op_type type; /**< Crypto op pool type operation. */ uint16_t priv_size; /**< Size of private area in each crypto operation. */ }; /** * Returns the size of private data allocated with each rte_crypto_op object by * the mempool * * @param mempool rte_crypto_op mempool * * @return private data size */ static inline uint16_t __rte_crypto_op_get_priv_data_size(struct rte_mempool *mempool) { struct rte_crypto_op_pool_private *priv = (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool); return priv->priv_size; } /** * Creates a crypto operation pool * * @param name pool name * @param type crypto operation type, use * RTE_CRYPTO_OP_TYPE_UNDEFINED for a pool which * supports all operation types * @param nb_elts number of elements in pool * @param cache_size Number of elements to cache on lcore, see * *rte_mempool_create* for further details about * cache size * @param priv_size Size of private data to allocate with each * operation * @param socket_id Socket to allocate memory on * * @return * - On success pointer to mempool * - On failure NULL */ extern struct rte_mempool * rte_crypto_op_pool_create(const char *name, enum rte_crypto_op_type type, unsigned nb_elts, unsigned cache_size, uint16_t priv_size, int socket_id); /** * Bulk allocate raw element from mempool and return as crypto operations * * @param mempool crypto operation mempool. * @param type crypto operation type. * @param ops Array to place allocated crypto operations * @param nb_ops Number of crypto operations to allocate * * @returns * - On success returns number of ops allocated */ static inline int __rte_crypto_op_raw_bulk_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type, struct rte_crypto_op **ops, uint16_t nb_ops) { struct rte_crypto_op_pool_private *priv; priv = (struct rte_crypto_op_pool_private *) rte_mempool_get_priv(mempool); if (unlikely(priv->type != type && priv->type != RTE_CRYPTO_OP_TYPE_UNDEFINED)) return -EINVAL; if (rte_mempool_get_bulk(mempool, (void **)ops, nb_ops) == 0) return nb_ops; return 0; } /** * Allocate a crypto operation from a mempool with default parameters set * * @param mempool crypto operation mempool * @param type operation type to allocate * * @returns * - On success returns a valid rte_crypto_op structure * - On failure returns NULL */ static inline struct rte_crypto_op * rte_crypto_op_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type) { struct rte_crypto_op *op = NULL; int retval; retval = __rte_crypto_op_raw_bulk_alloc(mempool, type, &op, 1); if (unlikely(retval != 1)) return NULL; __rte_crypto_op_reset(op, type); return op; } /** * Bulk allocate crypto operations from a mempool with default parameters set * * @param mempool crypto operation mempool * @param type operation type to allocate * @param ops Array to place allocated crypto operations * @param nb_ops Number of crypto operations to allocate * * @returns * - nb_ops if the number of operations requested were allocated. * - 0 if the requested number of ops are not available. * None are allocated in this case. */ static inline unsigned rte_crypto_op_bulk_alloc(struct rte_mempool *mempool, enum rte_crypto_op_type type, struct rte_crypto_op **ops, uint16_t nb_ops) { int i; if (unlikely(__rte_crypto_op_raw_bulk_alloc(mempool, type, ops, nb_ops) != nb_ops)) return 0; for (i = 0; i < nb_ops; i++) __rte_crypto_op_reset(ops[i], type); return nb_ops; } /** * Returns a pointer to the private data of a crypto operation if * that operation has enough capacity for requested size. * * @param op crypto operation. * @param size size of space requested in private data. * * @returns * - if sufficient space available returns pointer to start of private data * - if insufficient space returns NULL */ static inline void * __rte_crypto_op_get_priv_data(struct rte_crypto_op *op, uint32_t size) { uint32_t priv_size; if (likely(op->mempool != NULL)) { priv_size = __rte_crypto_op_get_priv_data_size(op->mempool); if (likely(priv_size >= size)) { if (op->type == RTE_CRYPTO_OP_TYPE_SYMMETRIC) return (void *)((uint8_t *)(op + 1) + sizeof(struct rte_crypto_sym_op)); if (op->type == RTE_CRYPTO_OP_TYPE_ASYMMETRIC) return (void *)((uint8_t *)(op + 1) + sizeof(struct rte_crypto_asym_op)); } } return NULL; } /** * free crypto operation structure * If operation has been allocate from a rte_mempool, then the operation will * be returned to the mempool. * * @param op symmetric crypto operation */ static inline void rte_crypto_op_free(struct rte_crypto_op *op) { if (op != NULL && op->mempool != NULL) rte_mempool_put(op->mempool, op); } /** * Allocate a symmetric crypto operation in the private data of an mbuf. * * @param m mbuf which is associated with the crypto operation, the * operation will be allocated in the private data of that * mbuf. * * @returns * - On success returns a pointer to the crypto operation. * - On failure returns NULL. */ static inline struct rte_crypto_op * rte_crypto_sym_op_alloc_from_mbuf_priv_data(struct rte_mbuf *m) { if (unlikely(m == NULL)) return NULL; /* * check that the mbuf's private data size is sufficient to contain a * crypto operation */ if (unlikely(m->priv_size < (sizeof(struct rte_crypto_op) + sizeof(struct rte_crypto_sym_op)))) return NULL; /* private data starts immediately after the mbuf header in the mbuf. */ struct rte_crypto_op *op = (struct rte_crypto_op *)(m + 1); __rte_crypto_op_reset(op, RTE_CRYPTO_OP_TYPE_SYMMETRIC); op->mempool = NULL; op->sym->m_src = m; return op; } /** * Allocate space for symmetric crypto xforms in the private data space of the * crypto operation. This also defaults the crypto xform type and configures * the chaining of the xforms in the crypto operation * * @return * - On success returns pointer to first crypto xform in crypto operations chain * - On failure returns NULL */ static inline struct rte_crypto_sym_xform * rte_crypto_op_sym_xforms_alloc(struct rte_crypto_op *op, uint8_t nb_xforms) { void *priv_data; uint32_t size; if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC)) return NULL; size = sizeof(struct rte_crypto_sym_xform) * nb_xforms; priv_data = __rte_crypto_op_get_priv_data(op, size); if (priv_data == NULL) return NULL; return __rte_crypto_sym_op_sym_xforms_alloc(op->sym, priv_data, nb_xforms); } /** * Attach a session to a crypto operation * * @param op crypto operation, must be of type symmetric * @param sess cryptodev session */ static inline int rte_crypto_op_attach_sym_session(struct rte_crypto_op *op, struct rte_cryptodev_sym_session *sess) { if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_SYMMETRIC)) return -1; op->sess_type = RTE_CRYPTO_OP_WITH_SESSION; return __rte_crypto_sym_op_attach_sym_session(op->sym, sess); } /** * Attach a asymmetric session to a crypto operation * * @param op crypto operation, must be of type asymmetric * @param sess cryptodev session */ static inline int rte_crypto_op_attach_asym_session(struct rte_crypto_op *op, struct rte_cryptodev_asym_session *sess) { if (unlikely(op->type != RTE_CRYPTO_OP_TYPE_ASYMMETRIC)) return -1; op->sess_type = RTE_CRYPTO_OP_WITH_SESSION; op->asym->session = sess; return 0; } #ifdef __cplusplus } #endif #endif /* _RTE_CRYPTO_H_ */