[dpdk-dev] [PATCH v3 2/8] cryptodev: add digest encrypted feature flag

[Damian Nowak <damianx.nowak@intel.com>]

Some PMDs can only support digest being
encrypted separately in auth-cipher operations.
Thus it is required to add feature flag in PMD
to reflect if it does support digest-appended
both: digest generation with encryption and
decryption with digest verification.
This patch also adds information about new
feature flag to the release notes.

Signed-off-by: Damian Nowak <damianx.nowak@intel.com>
---
 doc/guides/cryptodevs/features/default.ini | 1 +
 doc/guides/cryptodevs/overview.rst         | 3 +++
 doc/guides/rel_notes/release_19_08.rst     | 3 +++
 lib/librte_cryptodev/rte_cryptodev.c       | 2 ++
 lib/librte_cryptodev/rte_cryptodev.h       | 2 ++
 5 files changed, 11 insertions(+)

diff --git a/doc/guides/cryptodevs/features/default.ini b/doc/guides/cryptodevs/features/default.ini
index 0e06261..d3ee1af 100644
--- a/doc/guides/cryptodevs/features/default.ini
+++ b/doc/guides/cryptodevs/features/default.ini
@@ -25,6 +25,7 @@ OOP LB  In SGL Out     =
 OOP LB  In LB  Out     =
 RSA PRIV OP KEY EXP    =
 RSA PRIV OP KEY QT     =
+Digest encrypted       =
 
 ;
 ; Supported crypto algorithms of a default crypto driver.
diff --git a/doc/guides/cryptodevs/overview.rst b/doc/guides/cryptodevs/overview.rst
index a972c79..e2a1e08 100644
--- a/doc/guides/cryptodevs/overview.rst
+++ b/doc/guides/cryptodevs/overview.rst
@@ -43,6 +43,9 @@ Supported Feature Flags
    - "RSA PRIV OP KEY QT" feature flag means PMD support RSA private key
      operation (Sign and Decrypt) using quintuple (crt) type key only.
 
+   - "Digest encrypted" feature flag means PMD support hash-cipher cases,
+     where generated digest is appended to and encrypted with the data.
+
 
 Supported Cipher Algorithms
 ---------------------------
diff --git a/doc/guides/rel_notes/release_19_08.rst b/doc/guides/rel_notes/release_19_08.rst
index 644a74b..c82b7f5 100644
--- a/doc/guides/rel_notes/release_19_08.rst
+++ b/doc/guides/rel_notes/release_19_08.rst
@@ -169,6 +169,9 @@ API Changes
   structure (``rte_crypto_cipher_xform``, ``rte_crypto_auth_xform``, and
   ``rte_crypto_aead_xform``) have been changed to ``const uint8_t *data``.
 
+* cryptodev: ``RTE_CRYPTODEV_FF_DIGEST_ENCRYPTED`` feature flag
+  has been introduced.
+
 
 ABI Changes
 -----------
diff --git a/lib/librte_cryptodev/rte_cryptodev.c b/lib/librte_cryptodev/rte_cryptodev.c
index 240b849..43bc335 100644
--- a/lib/librte_cryptodev/rte_cryptodev.c
+++ b/lib/librte_cryptodev/rte_cryptodev.c
@@ -490,6 +490,8 @@ rte_cryptodev_get_feature_name(uint64_t flag)
 		return "RSA_PRIV_OP_KEY_EXP";
 	case RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_QT:
 		return "RSA_PRIV_OP_KEY_QT";
+	case RTE_CRYPTODEV_FF_DIGEST_ENCRYPTED:
+		return "DIGEST_ENCRYPTED";
 	default:
 		return NULL;
 	}
diff --git a/lib/librte_cryptodev/rte_cryptodev.h b/lib/librte_cryptodev/rte_cryptodev.h
index d701eea..e175b83 100644
--- a/lib/librte_cryptodev/rte_cryptodev.h
+++ b/lib/librte_cryptodev/rte_cryptodev.h
@@ -446,6 +446,8 @@ rte_cryptodev_asym_get_xform_enum(enum rte_crypto_asym_xform_type *xform_enum,
 /**< Support RSA Private Key OP with exponent */
 #define RTE_CRYPTODEV_FF_RSA_PRIV_OP_KEY_QT		(1ULL << 18)
 /**< Support RSA Private Key OP with CRT (quintuple) Keys */
+#define RTE_CRYPTODEV_FF_DIGEST_ENCRYPTED		(1ULL << 19)
+/**< Support encrypted-digest operations where digest is appended to data */
 
 
 /**
-- 
2.7.4