[PATCH v2 09/14] cryptodev: add asym op flags

[Arek Kusztal]

- Added flags to rte_crypto_asym_op struct.
It may be shared between different algorithms.
- Added Diffie-Hellman padding flags.
Diffie-Hellman padding is used in certain protocols,
in others, leading zero bytes need to be stripped.
Even same protocol may use a different approach - most
glaring example is TLS1.2 - TLS1.3.
For ease of use, and to avoid additional copy
on certain occasions, driver should be able to return both.

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal at intel.com>
---
 lib/cryptodev/rte_crypto_asym.h | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/lib/cryptodev/rte_crypto_asym.h b/lib/cryptodev/rte_crypto_asym.h
index 3eafaecbbe..1a57c0c532 100644
--- a/lib/cryptodev/rte_crypto_asym.h
+++ b/lib/cryptodev/rte_crypto_asym.h
@@ -75,6 +75,19 @@ struct rte_crypto_ec_point {
 	/**< Y coordinate */
 };
 
+#define RTE_CRYPTO_ASYM_FLAG_PUB_KEY_NO_PADDING		RTE_BIT32(0)
+/**<
+ * If set to 1 - public key will be returned
+ * without leading zero bytes, otherwise it will be
+ * padded to the left with zero bytes (default)
+ */
+#define RTE_CRYPTO_ASYM_FLAG_SHARED_KEY_NO_PADDING	RTE_BIT32(1)
+/**<
+ * If set to 1 - shared key will be returned
+ * without leading zero bytes, otherwise it will be
+ * padded to the left with zero bytes (default)
+ */
+
 /**
  * List of elliptic curves. This enum aligns with
  * TLS "Supported Groups" registry (previously known  as
@@ -589,6 +602,8 @@ struct rte_crypto_asym_op {
 		struct rte_crypto_ecdsa_op_param ecdsa;
 		struct rte_crypto_ecpm_op_param ecpm;
 	};
+	uint16_t flags;
+	/**< Asymmetric crypto operation flags */
 };
 
 #ifdef __cplusplus
-- 
2.13.6