[dpdk-dev] [PATCH 2/3] qat: add Snow3G UEA2 support

[Deepak Kumar JAIN <deepak.k.jain@intel.com>]

Added support for wireless Snow3G cipher only,
for the Intel Quick Assist device.

Signed-off-by: Deepak Kumar JAIN <deepak.k.jain@intel.com>
---
 doc/guides/cryptodevs/qat.rst                    |  5 +++--
 doc/guides/rel_notes/release_2_3.rst             |  1 +
 drivers/crypto/qat/qat_adf/qat_algs.h            |  1 +
 drivers/crypto/qat/qat_adf/qat_algs_build_desc.c | 12 ++++++++++++
 drivers/crypto/qat/qat_crypto.c                  |  8 ++++++++
 5 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst
index 1901842..eda5de2 100644
--- a/doc/guides/cryptodevs/qat.rst
+++ b/doc/guides/cryptodevs/qat.rst
@@ -1,5 +1,5 @@
 ..  BSD LICENSE
-    Copyright(c) 2015 Intel Corporation. All rights reserved.
+    Copyright(c) 2015-2016 Intel Corporation. All rights reserved.
 
     Redistribution and use in source and binary forms, with or without
     modification, are permitted provided that the following conditions
@@ -47,6 +47,7 @@ Cipher algorithms:
 * ``RTE_CRYPTO_SYM_CIPHER_AES128_CBC``
 * ``RTE_CRYPTO_SYM_CIPHER_AES192_CBC``
 * ``RTE_CRYPTO_SYM_CIPHER_AES256_CBC``
+* ``RTE_CRYPTO_SYM_CIPHER_SNOW3G_UEA2``
 
 Hash algorithms:
 
@@ -61,7 +62,7 @@ Limitations
 
 * Chained mbufs are not supported.
 * Hash only is not supported.
-* Cipher only is not supported.
+* Cipher only is not supported except Snow3G UEA2.
 * Only in-place is currently supported (destination address is the same as source address).
 * Only supports the session-oriented API implementation (session-less APIs are not supported).
 * Not performance tuned.
diff --git a/doc/guides/rel_notes/release_2_3.rst b/doc/guides/rel_notes/release_2_3.rst
index 99de186..0e1f1ff 100644
--- a/doc/guides/rel_notes/release_2_3.rst
+++ b/doc/guides/rel_notes/release_2_3.rst
@@ -3,6 +3,7 @@ DPDK Release 2.3
 
 New Features
 ------------
+* **Added the support of Snow3g UEA2 Cipher operation for Intel Quick Assist Devices.*
 
 
 Resolved Issues
diff --git a/drivers/crypto/qat/qat_adf/qat_algs.h b/drivers/crypto/qat/qat_adf/qat_algs.h
index d4aa087..54eeb23 100644
--- a/drivers/crypto/qat/qat_adf/qat_algs.h
+++ b/drivers/crypto/qat/qat_adf/qat_algs.h
@@ -127,5 +127,6 @@ void qat_alg_ablkcipher_init_dec(struct qat_alg_ablkcipher_cd *cd,
 					unsigned int keylen);
 
 int qat_alg_validate_aes_key(int key_len, enum icp_qat_hw_cipher_algo *alg);
+int qat_alg_validate_snow3g_key(int key_len, enum icp_qat_hw_cipher_algo *alg);
 
 #endif
diff --git a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
index 88fd803..200371d 100644
--- a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
+++ b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
@@ -755,3 +755,15 @@ int qat_alg_validate_aes_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
 	}
 	return 0;
 }
+
+int qat_alg_validate_snow3g_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
+{
+	switch (key_len) {
+	case ICP_QAT_HW_SNOW_3G_UEA2_KEY_SZ:
+		*alg = ICP_QAT_HW_CIPHER_ALGO_SNOW_3G_UEA2;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
diff --git a/drivers/crypto/qat/qat_crypto.c b/drivers/crypto/qat/qat_crypto.c
index e524638..9ae6715 100644
--- a/drivers/crypto/qat/qat_crypto.c
+++ b/drivers/crypto/qat/qat_crypto.c
@@ -168,6 +168,14 @@ qat_crypto_sym_configure_session_cipher(struct rte_cryptodev *dev,
 		}
 		session->qat_mode = ICP_QAT_HW_CIPHER_CTR_MODE;
 		break;
+	case RTE_CRYPTO_CIPHER_SNOW3G_UEA2:
+		if (qat_alg_validate_snow3g_key(cipher_xform->key.length,
+					&session->qat_cipher_alg) != 0) {
+			PMD_DRV_LOG(ERR, "Invalid SNOW3G cipher key size");
+			goto error_out;
+		}
+		session->qat_mode = ICP_QAT_HW_CIPHER_ECB_MODE;
+		break;
 	case RTE_CRYPTO_CIPHER_NULL:
 	case RTE_CRYPTO_CIPHER_3DES_ECB:
 	case RTE_CRYPTO_CIPHER_3DES_CBC:
-- 
2.1.0