[PATCH v7 5/5] crypto/tls-cipher-suites: Produce fw_cfg consumable blob

["Philippe Mathieu-Daudé" <philmd@redhat.com>]

Since our format is consumable by the fw_cfg device,
we can implement the FW_CFG_DATA_GENERATOR interface.

Acked-by: Laszlo Ersek <lersek@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
 crypto/tls-cipher-suites.c | 19 +++++++++++++++++++
 1 file changed, 19 insertions(+)

diff --git a/crypto/tls-cipher-suites.c b/crypto/tls-cipher-suites.c
index f02a041f9a..d6ea0ed190 100644
--- a/crypto/tls-cipher-suites.c
+++ b/crypto/tls-cipher-suites.c
@@ -14,6 +14,7 @@
 #include "qemu/error-report.h"
 #include "crypto/tlscreds.h"
 #include "crypto/tls-cipher-suites.h"
+#include "hw/nvram/fw_cfg.h"
 #include "trace.h"
 
 static void parse_cipher_suites(QCryptoTLSCipherSuites *s,
@@ -99,11 +100,28 @@ static void qcrypto_tls_cipher_suites_finalize(Object *obj)
     g_free(s->cipher_list);
 }
 
+static const void *qcrypto_tls_cipher_suites_get_data(Object *obj)
+{
+    QCryptoTLSCipherSuites *s = QCRYPTO_TLS_CIPHER_SUITES(obj);
+
+    return s->cipher_list;
+}
+
+static size_t qcrypto_tls_cipher_suites_get_length(Object *obj)
+{
+    QCryptoTLSCipherSuites *s = QCRYPTO_TLS_CIPHER_SUITES(obj);
+
+    return s->cipher_count * sizeof(IANA_TLS_CIPHER);
+}
+
 static void qcrypto_tls_cipher_suites_class_init(ObjectClass *oc, void *data)
 {
     UserCreatableClass *ucc = USER_CREATABLE_CLASS(oc);
+    FWCfgDataGeneratorClass *fwgc = FW_CFG_DATA_GENERATOR_CLASS(oc);
 
     ucc->complete = qcrypto_tls_cipher_suites_complete;
+    fwgc->get_data = qcrypto_tls_cipher_suites_get_data;
+    fwgc->get_length = qcrypto_tls_cipher_suites_get_length;
 }
 
 static const TypeInfo qcrypto_tls_cipher_suites_info = {
@@ -115,6 +133,7 @@ static const TypeInfo qcrypto_tls_cipher_suites_info = {
     .class_init = qcrypto_tls_cipher_suites_class_init,
     .interfaces = (InterfaceInfo[]) {
         { TYPE_USER_CREATABLE },
+        { TYPE_FW_CFG_DATA_GENERATOR_INTERFACE },
         { }
     }
 };
-- 
2.21.3