crypto: move QCryptoHashAlgorithm enum definition into QAPI

The QCryptoHashAlgorithm enum is defined in the crypto/hash.h
header. In the future some QAPI types will want to reference
the hash enums, so move the enum definition into QAPI too.
Reviewed-by: NEric Blake <eblake@redhat.com>
Signed-off-by: NDaniel P. Berrange <berrange@redhat.com>

crypto/hash.c

@@ -24,13 +24,13 @@
 #include <gnutls/gnutls.h>
 #include <gnutls/crypto.h>
 
-static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALG_LAST] = {
+static int qcrypto_hash_alg_map[QCRYPTO_HASH_ALG__MAX] = {
     [QCRYPTO_HASH_ALG_MD5] = GNUTLS_DIG_MD5,
     [QCRYPTO_HASH_ALG_SHA1] = GNUTLS_DIG_SHA1,
     [QCRYPTO_HASH_ALG_SHA256] = GNUTLS_DIG_SHA256,
 };
 
-static size_t qcrypto_hash_alg_size[QCRYPTO_HASH_ALG_LAST] = {
+static size_t qcrypto_hash_alg_size[QCRYPTO_HASH_ALG__MAX] = {
     [QCRYPTO_HASH_ALG_MD5] = 16,
     [QCRYPTO_HASH_ALG_SHA1] = 20,
     [QCRYPTO_HASH_ALG_SHA256] = 32,

include/crypto/hash.h

@@ -24,14 +24,7 @@
 #include "qemu-common.h"
 #include "qapi/error.h"
 
-typedef enum {
-    QCRYPTO_HASH_ALG_MD5,
-    QCRYPTO_HASH_ALG_SHA1,
-    QCRYPTO_HASH_ALG_SHA256,
-
-    QCRYPTO_HASH_ALG_LAST
-} QCryptoHashAlgorithm;
-
+/* See also "QCryptoHashAlgorithm" defined in qapi/crypto.json */
 
 /**
  * qcrypto_hash_supports:

qapi/crypto.json

@@ -33,3 +33,18 @@
 { 'enum': 'QCryptoSecretFormat',
   'prefix': 'QCRYPTO_SECRET_FORMAT',
   'data': ['raw', 'base64']}
+
+
+##
+# QCryptoHashAlgorithm:
+#
+# The supported algorithms for computing content digests
+#
+# @md5: MD5. Should not be used in any new code, legacy compat only
+# @sha1: SHA-1. Should not be used in any new code, legacy compat only
+# @sha256: SHA-256. Current recommended strong hash.
+# Since: 2.6
+##
+{ 'enum': 'QCryptoHashAlgorithm',
+  'prefix': 'QCRYPTO_HASH_ALG',
+  'data': ['md5', 'sha1', 'sha256']}