[dpdk-dev v1] crypto/qat: Enable OpenSSL legacy provider in session

[Kai Ji]

Some cryptographic algorithms such as MD and DES are now considered legacy
and not enabled by default in OpenSSL 3.0. Load up lagacy provider as MD5
DES are needed in QAT session pre-computes and secure session creation.

Fixes: 3227bc7138f5 ("crypto/qat: use intel-ipsec-mb for partial hash and AES")

Signed-off-by: Kai Ji <kai.ji at intel.com>
---
 drivers/crypto/qat/qat_sym_session.c | 53 ++++++++++++++++++++--------
 1 file changed, 39 insertions(+), 14 deletions(-)

diff --git a/drivers/crypto/qat/qat_sym_session.c b/drivers/crypto/qat/qat_sym_session.c
index b30396487e..42164cc6c6 100644
--- a/drivers/crypto/qat/qat_sym_session.c
+++ b/drivers/crypto/qat/qat_sym_session.c
@@ -30,6 +30,35 @@
 
 #if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
 #include <openssl/provider.h>
+
+static OSSL_PROVIDER * legacy_lib;
+static OSSL_PROVIDER *default_lib;
+
+/* Some cryptographic algorithms such as MD and DES are now considered legacy
+ * and not enabled by default in OpenSSL 3.0. Load up lagacy provider as MD5
+ * DES are needed in QAT pre-computes and secure session creation.
+ */
+static int ossl_legacy_provider_load(void)
+{
+	/* Load Multiple providers into the default (NULL) library context */
+	legacy_lib = OSSL_PROVIDER_load(NULL, "legacy");
+	if (legacy_lib == NULL)
+		return -EINVAL;
+
+	default_lib = OSSL_PROVIDER_load(NULL, "default");
+	if (default_lib == NULL) {
+		OSSL_PROVIDER_unload(legacy_lib);
+		return  -EINVAL;
+	}
+
+	return 0;
+}
+
+static void ossl_legacy_provider_unload(void)
+{
+	OSSL_PROVIDER_unload(legacy_lib);
+	OSSL_PROVIDER_unload(default_lib);
+}
 #endif
 
 extern int qat_ipsec_mb_lib;
@@ -485,19 +514,8 @@ qat_sym_session_configure(struct rte_cryptodev *dev,
 	}
 
 #if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
-	OSSL_PROVIDER *legacy;
-	OSSL_PROVIDER *deflt;
-
-	/* Load Multiple providers into the default (NULL) library context */
-	legacy = OSSL_PROVIDER_load(NULL, "legacy");
-	if (legacy == NULL)
+	if (ossl_legacy_provider_load())
 		return -EINVAL;
-
-	deflt = OSSL_PROVIDER_load(NULL, "default");
-	if (deflt == NULL) {
-		OSSL_PROVIDER_unload(legacy);
-		return  -EINVAL;
-	}
 #endif
 	ret = qat_sym_session_set_parameters(dev, xform, sess_private_data);
 	if (ret != 0) {
@@ -513,8 +531,7 @@ qat_sym_session_configure(struct rte_cryptodev *dev,
 		sess_private_data);
 
 # if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
-	OSSL_PROVIDER_unload(legacy);
-	OSSL_PROVIDER_unload(deflt);
+	ossl_legacy_provider_unload();
 # endif
 	return 0;
 }
@@ -2606,6 +2623,10 @@ qat_security_session_create(void *dev,
 		return -ENOMEM;
 	}
 
+#if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+	if (ossl_legacy_provider_load())
+		return -EINVAL;
+#endif
 	ret = qat_sec_session_set_docsis_parameters(cdev, conf,
 			sess_private_data);
 	if (ret != 0) {
@@ -2639,6 +2660,10 @@ qat_security_session_destroy(void *dev __rte_unused,
 		set_sec_session_private_data(sess, NULL);
 		rte_mempool_put(sess_mp, sess_priv);
 	}
+
+# if (OPENSSL_VERSION_NUMBER >= 0x30000000L)
+	ossl_legacy_provider_unload();
+# endif
 	return 0;
 }
 #endif
-- 
2.17.1