cryptodev: check if symmetric sessions are supported

Since asymmetric functionality will be implemented soon,
not all PMDs must support symmetric sessions.
Therefore, a check is added if a device does not implement
the symmetric functions, meaning that the device does not
support symmetric operations.

Signed-off-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
Acked-by: Akhil Goyal <akhil.goyal@nxp.com>

diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index 9292f93..0b20f3f 100644 (file)
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -1063,6 +1063,8 @@ rte_cryptodev_sym_session_init(uint8_t dev_id,
 
        index = dev->driver_id;
 
+       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->sym_session_configure, -ENOTSUP);
+
        if (sess->sess_private_data[index] == NULL) {
                ret = dev->dev_ops->sym_session_configure(dev, xforms,
                                                        sess, mp);
@@ -1107,6 +1109,8 @@ rte_cryptodev_sym_session_clear(uint8_t dev_id,
        if (dev == NULL || sess == NULL)
                return -EINVAL;
 
+       RTE_FUNC_PTR_OR_ERR_RET(*dev->dev_ops->sym_session_clear, -ENOTSUP);
+
        dev->dev_ops->sym_session_clear(dev, sess);
 
        return 0;

diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h
index 8fd3045..94d4b26 100644 (file)
--- a/lib/librte_cryptodev/rte_cryptodev.h
+++ b/lib/librte_cryptodev/rte_cryptodev.h
@@ -891,7 +891,8 @@ rte_cryptodev_sym_session_free(struct rte_cryptodev_sym_session *sess);
  * @return
  *  - On success, zero.
  *  - -EINVAL if input parameters are invalid.
- *  - -ENOTSUP if crypto device does not support the crypto transform.
+ *  - -ENOTSUP if crypto device does not support the crypto transform or
+ *    does not support symmetric operations.
  *  - -ENOMEM if the private session could not be allocated.
  */
 int
@@ -912,6 +913,7 @@ rte_cryptodev_sym_session_init(uint8_t dev_id,
  * @return
  *  - 0 if successful.
  *  - -EINVAL if device is invalid or session is NULL.
+ *  - -ENOTSUP if crypto device does not support symmetric operations.
  */
 int
 rte_cryptodev_sym_session_clear(uint8_t dev_id,