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Subject: [PATCH v10 02/12] 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>
---
backends/cryptodev.c | 45 ++++++++++++++
include/sysemu/cryptodev.h | 149 +++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 194 insertions(+)
diff --git a/backends/cryptodev.c b/backends/cryptodev.c
index e8582cd..47521cf 100644
--- a/backends/cryptodev.c
+++ b/backends/cryptodev.c
@@ -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)
diff --git a/include/sysemu/cryptodev.h b/include/sysemu/cryptodev.h
index bfaf771..e66bd4b 100644
--- a/include/sysemu/cryptodev.h
+++ b/include/sysemu/cryptodev.h
@@ -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 */
--
1.8.3.1
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