mirror of https://gitlab.com/qemu-project/qemu
cryptodev: add symmetric algorithm operation stuff
This patch adds session operation and crypto operation stuff in the cryptodev backend, including function pointers and corresponding structures. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -75,6 +75,51 @@ void cryptodev_backend_cleanup(
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backend->ready = false;
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}
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int64_t cryptodev_backend_sym_create_session(
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CryptoDevBackend *backend,
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CryptoDevBackendSymSessionInfo *sess_info,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->create_session) {
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return bc->create_session(backend, sess_info, queue_index, errp);
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}
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return -1;
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}
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int cryptodev_backend_sym_close_session(
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CryptoDevBackend *backend,
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uint64_t session_id,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->close_session) {
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return bc->close_session(backend, session_id, queue_index, errp);
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}
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return -1;
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}
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int cryptodev_backend_sym_operation(
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CryptoDevBackend *backend,
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CryptoDevBackendSymOpInfo *op_info,
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uint32_t queue_index, Error **errp)
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{
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CryptoDevBackendClass *bc =
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CRYPTODEV_BACKEND_GET_CLASS(backend);
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if (bc->do_sym_op) {
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return bc->do_sym_op(backend, op_info, queue_index, errp);
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}
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return -1;
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}
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static void
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cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name,
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void *opaque, Error **errp)
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@ -56,12 +56,111 @@ typedef struct CryptoDevBackendClient
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CryptoDevBackendClient;
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typedef struct CryptoDevBackend CryptoDevBackend;
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enum CryptoDevBackendAlgType {
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CRYPTODEV_BACKEND_ALG_SYM,
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CRYPTODEV_BACKEND_ALG__MAX,
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};
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/**
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* CryptoDevBackendSymSessionInfo:
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*
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* @op_code: operation code (refer to virtio_crypto.h)
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* @cipher_alg: algorithm type of CIPHER
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* @key_len: byte length of cipher key
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* @hash_alg: algorithm type of HASH/MAC
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* @hash_result_len: byte length of HASH operation result
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* @auth_key_len: byte length of authenticated key
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* @add_len: byte length of additional authenticated data
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* @op_type: operation type (refer to virtio_crypto.h)
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* @direction: encryption or direction for CIPHER
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* @hash_mode: HASH mode for HASH operation (refer to virtio_crypto.h)
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* @alg_chain_order: order of algorithm chaining (CIPHER then HASH,
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* or HASH then CIPHER)
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* @cipher_key: point to a key of CIPHER
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* @auth_key: point to an authenticated key of MAC
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*
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*/
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typedef struct CryptoDevBackendSymSessionInfo {
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/* corresponding with virtio crypto spec */
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uint32_t op_code;
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uint32_t cipher_alg;
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uint32_t key_len;
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uint32_t hash_alg;
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uint32_t hash_result_len;
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uint32_t auth_key_len;
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uint32_t add_len;
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uint8_t op_type;
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uint8_t direction;
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uint8_t hash_mode;
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uint8_t alg_chain_order;
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uint8_t *cipher_key;
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uint8_t *auth_key;
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} CryptoDevBackendSymSessionInfo;
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/**
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* CryptoDevBackendSymOpInfo:
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*
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* @session_id: session index which was previously
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* created by cryptodev_backend_sym_create_session()
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* @aad_len: byte length of additional authenticated data
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* @iv_len: byte length of initialization vector or counter
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* @src_len: byte length of source data
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* @dst_len: byte length of destination data
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* @digest_result_len: byte length of hash digest result
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* @hash_start_src_offset: Starting point for hash processing, specified
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* as number of bytes from start of packet in source data, only used for
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* algorithm chain
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* @cipher_start_src_offset: Starting point for cipher processing, specified
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* as number of bytes from start of packet in source data, only used for
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* algorithm chain
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* @len_to_hash: byte length of source data on which the hash
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* operation will be computed, only used for algorithm chain
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* @len_to_cipher: byte length of source data on which the cipher
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* operation will be computed, only used for algorithm chain
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* @op_type: operation type (refer to virtio_crypto.h)
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* @iv: point to the initialization vector or counter
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* @src: point to the source data
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* @dst: point to the destination data
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* @aad_data: point to the additional authenticated data
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* @digest_result: point to the digest result data
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* @data[0]: point to the extensional memory by one memory allocation
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*
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*/
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typedef struct CryptoDevBackendSymOpInfo {
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uint64_t session_id;
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uint32_t aad_len;
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uint32_t iv_len;
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uint32_t src_len;
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uint32_t dst_len;
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uint32_t digest_result_len;
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uint32_t hash_start_src_offset;
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uint32_t cipher_start_src_offset;
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uint32_t len_to_hash;
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uint32_t len_to_cipher;
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uint8_t op_type;
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uint8_t *iv;
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uint8_t *src;
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uint8_t *dst;
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uint8_t *aad_data;
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uint8_t *digest_result;
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uint8_t data[0];
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} CryptoDevBackendSymOpInfo;
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typedef struct CryptoDevBackendClass {
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ObjectClass parent_class;
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void (*init)(CryptoDevBackend *backend, Error **errp);
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void (*cleanup)(CryptoDevBackend *backend, Error **errp);
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int64_t (*create_session)(CryptoDevBackend *backend,
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CryptoDevBackendSymSessionInfo *sess_info,
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uint32_t queue_index, Error **errp);
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int (*close_session)(CryptoDevBackend *backend,
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uint64_t session_id,
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uint32_t queue_index, Error **errp);
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int (*do_sym_op)(CryptoDevBackend *backend,
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CryptoDevBackendSymOpInfo *op_info,
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uint32_t queue_index, Error **errp);
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} CryptoDevBackendClass;
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@ -145,4 +244,54 @@ void cryptodev_backend_cleanup(
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CryptoDevBackend *backend,
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Error **errp);
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/**
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* cryptodev_backend_sym_create_session:
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* @backend: the cryptodev backend object
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* @sess_info: parameters needed by session creating
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* @queue_index: queue index of cryptodev backend client
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* @errp: pointer to a NULL-initialized error object
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*
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* Create a session for symmetric algorithms
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*
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* Returns: session id on success, or -1 on error
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*/
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int64_t cryptodev_backend_sym_create_session(
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CryptoDevBackend *backend,
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CryptoDevBackendSymSessionInfo *sess_info,
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uint32_t queue_index, Error **errp);
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/**
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* cryptodev_backend_sym_close_session:
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* @backend: the cryptodev backend object
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* @session_id: the session id
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* @queue_index: queue index of cryptodev backend client
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* @errp: pointer to a NULL-initialized error object
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*
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* Close a session for symmetric algorithms which was previously
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* created by cryptodev_backend_sym_create_session()
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*
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* Returns: 0 on success, or Negative on error
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*/
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int cryptodev_backend_sym_close_session(
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CryptoDevBackend *backend,
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uint64_t session_id,
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uint32_t queue_index, Error **errp);
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/**
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* cryptodev_backend_sym_operation:
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* @backend: the cryptodev backend object
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* @op_info: parameters needed by symmetric crypto operation
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* @queue_index: queue index of cryptodev backend client
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* @errp: pointer to a NULL-initialized error object
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*
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* Do symmetric crypto operation, such as encryption and
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* decryption
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*
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* Returns: 0 on success, or Negative on error
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*/
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int cryptodev_backend_sym_operation(
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CryptoDevBackend *backend,
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CryptoDevBackendSymOpInfo *op_info,
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uint32_t queue_index, Error **errp);
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#endif /* CRYPTODEV_H */
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