drivers/crypto: fix session-less mode

[ upstream commit a0c2b3d ]

When OpenSSL or AESNI-MB cryptodev is being used in sessionless mode
for symmetric crypto operation (e.g. SHA256 hash), the driver prints
error message:

    CRYPTODEV: set_sym_session_private_data() line 489:
               Set private data for driver 0 not allowed

Then, AESNI-MB driver segfaults in post_process_mb_job().

Bugzilla ID: 377
Fixes: b3bbd9e ("cryptodev: support device independent sessions")
Fixes: c68d7aa ("crypto/aesni_mb: use architecture independent macros")

Signed-off-by: Junxiao Shi <git@mail1.yoursunny.com>

drivers/crypto/aesni_mb/rte_aesni_mb_pmd.c

@@ -662,10 +662,10 @@ get_session(struct aesni_mb_qp *qp, struct rte_crypto_op *op)
 					op->sym->session,
 					cryptodev_driver_id);
 	} else {
-		void *_sess = NULL;
+		void *_sess = rte_cryptodev_sym_session_create(qp->sess_mp);
 		void *_sess_private_data = NULL;
 
-		if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
+		if (_sess == NULL)
 			return NULL;
 
 		if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))

drivers/crypto/openssl/rte_openssl_pmd.c

@@ -762,10 +762,10 @@ get_session(struct openssl_qp *qp, struct rte_crypto_op *op)
 			return NULL;
 
 		/* provide internal session */
-		void *_sess = NULL;
+		void *_sess = rte_cryptodev_sym_session_create(qp->sess_mp);
 		void *_sess_private_data = NULL;
 
-		if (rte_mempool_get(qp->sess_mp, (void **)&_sess))
+		if (_sess == NULL)
 			return NULL;
 
 		if (rte_mempool_get(qp->sess_mp, (void **)&_sess_private_data))