cryptodev: Introduce cryptodev alg type in QAPI

Introduce cryptodev alg type in cryptodev.json, then apply this to
related codes, and drop 'enum CryptoDevBackendAlgType'.

There are two options:
1, { 'enum': 'QCryptodevBackendAlgType',
  'prefix': 'CRYPTODEV_BACKEND_ALG',
  'data': ['sym', 'asym']}
Then we can keep 'CRYPTODEV_BACKEND_ALG_SYM' and avoid lots of
changes.
2, changes in this patch(with prefix 'QCRYPTODEV_BACKEND_ALG').

To avoid breaking the rule of QAPI, use 2 here.

Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: zhenwei pi <pizhenwei@bytedance.com>
Message-Id: <20230301105847.253084-4-pizhenwei@bytedance.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>

backends/cryptodev-builtin.c

@@ -537,7 +537,7 @@ static int cryptodev_builtin_operation(
     CryptoDevBackendBuiltinSession *sess;
     CryptoDevBackendSymOpInfo *sym_op_info;
     CryptoDevBackendAsymOpInfo *asym_op_info;
-    enum CryptoDevBackendAlgType algtype = op_info->algtype;
+    QCryptodevBackendAlgType algtype = op_info->algtype;
     int status = -VIRTIO_CRYPTO_ERR;
     Error *local_error = NULL;
 
@@ -549,11 +549,11 @@ static int cryptodev_builtin_operation(
     }
 
     sess = builtin->sessions[op_info->session_id];
-    if (algtype == CRYPTODEV_BACKEND_ALG_SYM) {
+    if (algtype == QCRYPTODEV_BACKEND_ALG_SYM) {
         sym_op_info = op_info->u.sym_op_info;
         status = cryptodev_builtin_sym_operation(sess, sym_op_info,
                                                  &local_error);
-    } else if (algtype == CRYPTODEV_BACKEND_ALG_ASYM) {
+    } else if (algtype == QCRYPTODEV_BACKEND_ALG_ASYM) {
         asym_op_info = op_info->u.asym_op_info;
         status = cryptodev_builtin_asym_operation(sess, op_info->op_code,
                                                   asym_op_info, &local_error);

backends/cryptodev-lkcf.c

@@ -477,7 +477,7 @@ static int cryptodev_lkcf_operation(
     CryptoDevBackendLKCF *lkcf =
         CRYPTODEV_BACKEND_LKCF(backend);
     CryptoDevBackendLKCFSession *sess;
-    enum CryptoDevBackendAlgType algtype = op_info->algtype;
+    QCryptodevBackendAlgType algtype = op_info->algtype;
     CryptoDevLKCFTask *task;
 
     if (op_info->session_id >= MAX_SESSIONS ||
@@ -488,7 +488,7 @@ static int cryptodev_lkcf_operation(
     }
 
     sess = lkcf->sess[op_info->session_id];
-    if (algtype != CRYPTODEV_BACKEND_ALG_ASYM) {
+    if (algtype != QCRYPTODEV_BACKEND_ALG_ASYM) {
         error_report("algtype not supported: %u", algtype);
         return -VIRTIO_CRYPTO_NOTSUPP;
     }

backends/cryptodev.c

@@ -120,10 +120,10 @@ int cryptodev_backend_crypto_operation(
 {
     VirtIOCryptoReq *req = opaque1;
     CryptoDevBackendOpInfo *op_info = &req->op_info;
-    enum CryptoDevBackendAlgType algtype = req->flags;
+    QCryptodevBackendAlgType algtype = req->flags;
 
-    if ((algtype != CRYPTODEV_BACKEND_ALG_SYM)
-        && (algtype != CRYPTODEV_BACKEND_ALG_ASYM)) {
+    if ((algtype != QCRYPTODEV_BACKEND_ALG_SYM)
+        && (algtype != QCRYPTODEV_BACKEND_ALG_ASYM)) {
         error_report("Unsupported cryptodev alg type: %" PRIu32 "", algtype);
         return -VIRTIO_CRYPTO_NOTSUPP;
     }

hw/virtio/virtio-crypto.c

@@ -462,7 +462,7 @@ static void virtio_crypto_init_request(VirtIOCrypto *vcrypto, VirtQueue *vq,
     req->in_iov = NULL;
     req->in_num = 0;
     req->in_len = 0;
-    req->flags = CRYPTODEV_BACKEND_ALG__MAX;
+    req->flags = QCRYPTODEV_BACKEND_ALG__MAX;
     memset(&req->op_info, 0x00, sizeof(req->op_info));
 }
 
@@ -472,7 +472,7 @@ static void virtio_crypto_free_request(VirtIOCryptoReq *req)
         return;
     }
 
-    if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) {
+    if (req->flags == QCRYPTODEV_BACKEND_ALG_SYM) {
         size_t max_len;
         CryptoDevBackendSymOpInfo *op_info = req->op_info.u.sym_op_info;
 
@@ -485,7 +485,7 @@ static void virtio_crypto_free_request(VirtIOCryptoReq *req)
         /* Zeroize and free request data structure */
         memset(op_info, 0, sizeof(*op_info) + max_len);
         g_free(op_info);
-    } else if (req->flags == CRYPTODEV_BACKEND_ALG_ASYM) {
+    } else if (req->flags == QCRYPTODEV_BACKEND_ALG_ASYM) {
         CryptoDevBackendAsymOpInfo *op_info = req->op_info.u.asym_op_info;
         if (op_info) {
             g_free(op_info->src);
@@ -570,10 +570,10 @@ static void virtio_crypto_req_complete(void *opaque, int ret)
     VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
     uint8_t status = -ret;
 
-    if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) {
+    if (req->flags == QCRYPTODEV_BACKEND_ALG_SYM) {
         virtio_crypto_sym_input_data_helper(vdev, req, status,
                                             req->op_info.u.sym_op_info);
-    } else if (req->flags == CRYPTODEV_BACKEND_ALG_ASYM) {
+    } else if (req->flags == QCRYPTODEV_BACKEND_ALG_ASYM) {
         virtio_crypto_akcipher_input_data_helper(vdev, req, status,
                                              req->op_info.u.asym_op_info);
     }
@@ -875,7 +875,7 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request)
     switch (opcode) {
     case VIRTIO_CRYPTO_CIPHER_ENCRYPT:
     case VIRTIO_CRYPTO_CIPHER_DECRYPT:
-        op_info->algtype = request->flags = CRYPTODEV_BACKEND_ALG_SYM;
+        op_info->algtype = request->flags = QCRYPTODEV_BACKEND_ALG_SYM;
         ret = virtio_crypto_handle_sym_req(vcrypto,
                          &req.u.sym_req, op_info,
                          out_iov, out_num);
@@ -885,7 +885,7 @@ virtio_crypto_handle_request(VirtIOCryptoReq *request)
     case VIRTIO_CRYPTO_AKCIPHER_DECRYPT:
     case VIRTIO_CRYPTO_AKCIPHER_SIGN:
     case VIRTIO_CRYPTO_AKCIPHER_VERIFY:
-        op_info->algtype = request->flags = CRYPTODEV_BACKEND_ALG_ASYM;
+        op_info->algtype = request->flags = QCRYPTODEV_BACKEND_ALG_ASYM;
         ret = virtio_crypto_handle_asym_req(vcrypto,
                          &req.u.akcipher_req, op_info,
                          out_iov, out_num);

include/sysemu/cryptodev.h

@@ -49,12 +49,6 @@ typedef struct CryptoDevBackendPeers CryptoDevBackendPeers;
 typedef struct CryptoDevBackendClient
                      CryptoDevBackendClient;
 
-enum CryptoDevBackendAlgType {
-    CRYPTODEV_BACKEND_ALG_SYM,
-    CRYPTODEV_BACKEND_ALG_ASYM,
-    CRYPTODEV_BACKEND_ALG__MAX,
-};
-
 /**
  * CryptoDevBackendSymSessionInfo:
  *
@@ -181,7 +175,7 @@ typedef struct CryptoDevBackendAsymOpInfo {
 } CryptoDevBackendAsymOpInfo;
 
 typedef struct CryptoDevBackendOpInfo {
-    enum CryptoDevBackendAlgType algtype;
+    QCryptodevBackendAlgType algtype;
     uint32_t op_code;
     uint64_t session_id;
     union {

qapi/cryptodev.json

@@ -4,6 +4,20 @@
 # This work is licensed under the terms of the GNU GPL, version 2 or later.
 # See the COPYING file in the top-level directory.
 
+##
+# @QCryptodevBackendAlgType:
+#
+# The supported algorithm types of a crypto device.
+#
+# @sym: symmetric encryption
+# @asym: asymmetric Encryption
+#
+# Since: 8.0
+##
+{ 'enum': 'QCryptodevBackendAlgType',
+  'prefix': 'QCRYPTODEV_BACKEND_ALG',
+  'data': ['sym', 'asym']}
+
 ##
 # @QCryptodevBackendType:
 #