Commit 9e4f86a8 authored by Gonglei's avatar Gonglei Committed by Michael S. Tsirkin

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: 's avatarGonglei <arei.gonglei@huawei.com>
Reviewed-by: 's avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: 's avatarMichael S. Tsirkin <mst@redhat.com>
parent d0ee7a13
......@@ -75,6 +75,51 @@ void cryptodev_backend_cleanup(
backend->ready = false;
}
int64_t cryptodev_backend_sym_create_session(
CryptoDevBackend *backend,
CryptoDevBackendSymSessionInfo *sess_info,
uint32_t queue_index, Error **errp)
{
CryptoDevBackendClass *bc =
CRYPTODEV_BACKEND_GET_CLASS(backend);
if (bc->create_session) {
return bc->create_session(backend, sess_info, queue_index, errp);
}
return -1;
}
int cryptodev_backend_sym_close_session(
CryptoDevBackend *backend,
uint64_t session_id,
uint32_t queue_index, Error **errp)
{
CryptoDevBackendClass *bc =
CRYPTODEV_BACKEND_GET_CLASS(backend);
if (bc->close_session) {
return bc->close_session(backend, session_id, queue_index, errp);
}
return -1;
}
int cryptodev_backend_sym_operation(
CryptoDevBackend *backend,
CryptoDevBackendSymOpInfo *op_info,
uint32_t queue_index, Error **errp)
{
CryptoDevBackendClass *bc =
CRYPTODEV_BACKEND_GET_CLASS(backend);
if (bc->do_sym_op) {
return bc->do_sym_op(backend, op_info, queue_index, errp);
}
return -1;
}
static void
cryptodev_backend_get_queues(Object *obj, Visitor *v, const char *name,
void *opaque, Error **errp)
......
......@@ -56,12 +56,111 @@ typedef struct CryptoDevBackendClient
CryptoDevBackendClient;
typedef struct CryptoDevBackend CryptoDevBackend;
enum CryptoDevBackendAlgType {
CRYPTODEV_BACKEND_ALG_SYM,
CRYPTODEV_BACKEND_ALG__MAX,
};
/**
* CryptoDevBackendSymSessionInfo:
*
* @op_code: operation code (refer to virtio_crypto.h)
* @cipher_alg: algorithm type of CIPHER
* @key_len: byte length of cipher key
* @hash_alg: algorithm type of HASH/MAC
* @hash_result_len: byte length of HASH operation result
* @auth_key_len: byte length of authenticated key
* @add_len: byte length of additional authenticated data
* @op_type: operation type (refer to virtio_crypto.h)
* @direction: encryption or direction for CIPHER
* @hash_mode: HASH mode for HASH operation (refer to virtio_crypto.h)
* @alg_chain_order: order of algorithm chaining (CIPHER then HASH,
* or HASH then CIPHER)
* @cipher_key: point to a key of CIPHER
* @auth_key: point to an authenticated key of MAC
*
*/
typedef struct CryptoDevBackendSymSessionInfo {
/* corresponding with virtio crypto spec */
uint32_t op_code;
uint32_t cipher_alg;
uint32_t key_len;
uint32_t hash_alg;
uint32_t hash_result_len;
uint32_t auth_key_len;
uint32_t add_len;
uint8_t op_type;
uint8_t direction;
uint8_t hash_mode;
uint8_t alg_chain_order;
uint8_t *cipher_key;
uint8_t *auth_key;
} CryptoDevBackendSymSessionInfo;
/**
* CryptoDevBackendSymOpInfo:
*
* @session_id: session index which was previously
* created by cryptodev_backend_sym_create_session()
* @aad_len: byte length of additional authenticated data
* @iv_len: byte length of initialization vector or counter
* @src_len: byte length of source data
* @dst_len: byte length of destination data
* @digest_result_len: byte length of hash digest result
* @hash_start_src_offset: Starting point for hash processing, specified
* as number of bytes from start of packet in source data, only used for
* algorithm chain
* @cipher_start_src_offset: Starting point for cipher processing, specified
* as number of bytes from start of packet in source data, only used for
* algorithm chain
* @len_to_hash: byte length of source data on which the hash
* operation will be computed, only used for algorithm chain
* @len_to_cipher: byte length of source data on which the cipher
* operation will be computed, only used for algorithm chain
* @op_type: operation type (refer to virtio_crypto.h)
* @iv: point to the initialization vector or counter
* @src: point to the source data
* @dst: point to the destination data
* @aad_data: point to the additional authenticated data
* @digest_result: point to the digest result data
* @data[0]: point to the extensional memory by one memory allocation
*
*/
typedef struct CryptoDevBackendSymOpInfo {
uint64_t session_id;
uint32_t aad_len;
uint32_t iv_len;
uint32_t src_len;
uint32_t dst_len;
uint32_t digest_result_len;
uint32_t hash_start_src_offset;
uint32_t cipher_start_src_offset;
uint32_t len_to_hash;
uint32_t len_to_cipher;
uint8_t op_type;
uint8_t *iv;
uint8_t *src;
uint8_t *dst;
uint8_t *aad_data;
uint8_t *digest_result;
uint8_t data[0];
} CryptoDevBackendSymOpInfo;
typedef struct CryptoDevBackendClass {
ObjectClass parent_class;
void (*init)(CryptoDevBackend *backend, Error **errp);
void (*cleanup)(CryptoDevBackend *backend, Error **errp);
int64_t (*create_session)(CryptoDevBackend *backend,
CryptoDevBackendSymSessionInfo *sess_info,
uint32_t queue_index, Error **errp);
int (*close_session)(CryptoDevBackend *backend,
uint64_t session_id,
uint32_t queue_index, Error **errp);
int (*do_sym_op)(CryptoDevBackend *backend,
CryptoDevBackendSymOpInfo *op_info,
uint32_t queue_index, Error **errp);
} CryptoDevBackendClass;
......@@ -145,4 +244,54 @@ void cryptodev_backend_cleanup(
CryptoDevBackend *backend,
Error **errp);
/**
* cryptodev_backend_sym_create_session:
* @backend: the cryptodev backend object
* @sess_info: parameters needed by session creating
* @queue_index: queue index of cryptodev backend client
* @errp: pointer to a NULL-initialized error object
*
* Create a session for symmetric algorithms
*
* Returns: session id on success, or -1 on error
*/
int64_t cryptodev_backend_sym_create_session(
CryptoDevBackend *backend,
CryptoDevBackendSymSessionInfo *sess_info,
uint32_t queue_index, Error **errp);
/**
* cryptodev_backend_sym_close_session:
* @backend: the cryptodev backend object
* @session_id: the session id
* @queue_index: queue index of cryptodev backend client
* @errp: pointer to a NULL-initialized error object
*
* Close a session for symmetric algorithms which was previously
* created by cryptodev_backend_sym_create_session()
*
* Returns: 0 on success, or Negative on error
*/
int cryptodev_backend_sym_close_session(
CryptoDevBackend *backend,
uint64_t session_id,
uint32_t queue_index, Error **errp);
/**
* cryptodev_backend_sym_operation:
* @backend: the cryptodev backend object
* @op_info: parameters needed by symmetric crypto operation
* @queue_index: queue index of cryptodev backend client
* @errp: pointer to a NULL-initialized error object
*
* Do symmetric crypto operation, such as encryption and
* decryption
*
* Returns: 0 on success, or Negative on error
*/
int cryptodev_backend_sym_operation(
CryptoDevBackend *backend,
CryptoDevBackendSymOpInfo *op_info,
uint32_t queue_index, Error **errp);
#endif /* CRYPTODEV_H */
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