[v2, 1/3] cryptodev: set private data for session-less mode

[Abhinandan Gujjar <abhinandan.gujjar@intel.com>]

The application may want to store private data along with the
rte_crypto_op that is transparent to the rte_cryptodev layer.
For e.g., If an eventdev based application is submitting a
crypto session-less operation and wants to indicate event
information required to construct a new event that will be
enqueued to eventdev after completion of the crypto
operation. This patch provides a mechanism for the application
to associate this information with the rte_crypto_op in
session-less mode.

Signed-off-by: Abhinandan Gujjar <abhinandan.gujjar@intel.com>
Signed-off-by: Nikhil Rao <nikhil.rao@intel.com>
Acked-by: Pablo de Lara <pablo.de.lara.guarch@intel.com>
---
 lib/librte_cryptodev/rte_crypto.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/lib/librte_cryptodev/rte_crypto.h b/lib/librte_cryptodev/rte_crypto.h
index 95cf861..2540426 100644
--- a/lib/librte_cryptodev/rte_crypto.h
+++ b/lib/librte_cryptodev/rte_crypto.h
@@ -84,8 +84,14 @@ struct rte_crypto_op {
 	 */
 	uint8_t sess_type;
 	/**< operation session type */
+	uint16_t private_data_offset;
+	/**< Offset to indicate start of private data (if any). The offset
+	 * is counted from the start of the rte_crypto_op including IV.
+	 * The private data may be used by the application to store
+	 * information which should remain untouched in the library/driver
+	 */
 
-	uint8_t reserved[5];
+	uint8_t reserved[3];
 	/**< Reserved bytes to fill 64 bits for future additions */
 	struct rte_mempool *mempool;
 	/**< crypto operation mempool which operation is allocated from */
-- 
1.9.1