[dpdk-dev] [PATCH 2/3] crypto/qat: add DES capability to Intel QAT driver

[Arek Kusztal <arkadiuszx.kusztal@intel.com>]

This commit adds DES capability to Intel QuickAssist
Technology Driver

Signed-off-by: Arek Kusztal <arkadiuszx.kusztal@intel.com>
---
 doc/guides/cryptodevs/qat.rst                    |  1 +
 doc/guides/rel_notes/release_17_02.rst           |  6 +++++
 drivers/crypto/qat/qat_adf/qat_algs.h            |  1 +
 drivers/crypto/qat/qat_adf/qat_algs_build_desc.c | 16 +++++++++++++
 drivers/crypto/qat/qat_crypto.c                  | 29 +++++++++++++++++++++++-
 5 files changed, 52 insertions(+), 1 deletion(-)

diff --git a/doc/guides/cryptodevs/qat.rst b/doc/guides/cryptodevs/qat.rst
index 607d244..3e97403 100644
--- a/doc/guides/cryptodevs/qat.rst
+++ b/doc/guides/cryptodevs/qat.rst
@@ -54,6 +54,7 @@ Cipher algorithms:
 * ``RTE_CRYPTO_CIPHER_AES_GCM``
 * ``RTE_CRYPTO_CIPHER_NULL``
 * ``RTE_CRYPTO_CIPHER_KASUMI_F8``
+* ``RTE_CRYPTO_CIPHER_DES_CBC``
 
 Hash algorithms:
 
diff --git a/doc/guides/rel_notes/release_17_02.rst b/doc/guides/rel_notes/release_17_02.rst
index 3b65038..8fd67ab 100644
--- a/doc/guides/rel_notes/release_17_02.rst
+++ b/doc/guides/rel_notes/release_17_02.rst
@@ -38,6 +38,12 @@ New Features
      Also, make sure to start the actual text at the margin.
      =========================================================
 
+* **Updated the QAT PMD.**
+
+  The QAT PMD was updated with additional support for:
+
+  * DES algorithm.
+
 
 Resolved Issues
 ---------------
diff --git a/drivers/crypto/qat/qat_adf/qat_algs.h b/drivers/crypto/qat/qat_adf/qat_algs.h
index dcc0df5..5409e1e 100644
--- a/drivers/crypto/qat/qat_adf/qat_algs.h
+++ b/drivers/crypto/qat/qat_adf/qat_algs.h
@@ -144,4 +144,5 @@ 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);
 int qat_alg_validate_kasumi_key(int key_len, enum icp_qat_hw_cipher_algo *alg);
 int qat_alg_validate_3des_key(int key_len, enum icp_qat_hw_cipher_algo *alg);
+int qat_alg_validate_des_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 f4e24b3..fbeef0a 100644
--- a/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
+++ b/drivers/crypto/qat/qat_adf/qat_algs_build_desc.c
@@ -518,6 +518,10 @@ int qat_alg_aead_session_create_content_desc_cipher(struct qat_session *cdesc,
 		total_key_size = ICP_QAT_HW_3DES_KEY_SZ;
 		cipher_cd_ctrl->cipher_state_sz = ICP_QAT_HW_3DES_BLK_SZ >> 3;
 		proto = ICP_QAT_FW_LA_PROTO_GET(header->serv_specif_flags);
+	} else if (cdesc->qat_cipher_alg == ICP_QAT_HW_CIPHER_ALGO_DES) {
+		total_key_size = ICP_QAT_HW_DES_KEY_SZ;
+		cipher_cd_ctrl->cipher_state_sz = ICP_QAT_HW_DES_BLK_SZ >> 3;
+		proto = ICP_QAT_FW_LA_PROTO_GET(header->serv_specif_flags);
 	} else {
 		total_key_size = cipherkeylen;
 		cipher_cd_ctrl->cipher_state_sz = ICP_QAT_HW_AES_BLK_SZ >> 3;
@@ -858,6 +862,18 @@ int qat_alg_validate_kasumi_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
 	return 0;
 }
 
+int qat_alg_validate_des_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
+{
+	switch (key_len) {
+	case ICP_QAT_HW_DES_KEY_SZ:
+		*alg = ICP_QAT_HW_CIPHER_ALGO_DES;
+		break;
+	default:
+		return -EINVAL;
+	}
+	return 0;
+}
+
 int qat_alg_validate_3des_key(int key_len, enum icp_qat_hw_cipher_algo *alg)
 {
 	switch (key_len) {
diff --git a/drivers/crypto/qat/qat_crypto.c b/drivers/crypto/qat/qat_crypto.c
index 6a6bd2e..4ee1ef8 100644
--- a/drivers/crypto/qat/qat_crypto.c
+++ b/drivers/crypto/qat/qat_crypto.c
@@ -496,6 +496,26 @@ static const struct rte_cryptodev_capabilities qat_pmd_capabilities[] = {
 			}, }
 		}, }
 	},
+	{	/* DES CBC */
+		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+		{.sym = {
+			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+			{.cipher = {
+				.algo = RTE_CRYPTO_CIPHER_DES_CBC,
+				.block_size = 8,
+				.key_size = {
+					.min = 8,
+					.max = 8,
+					.increment = 0
+				},
+				.iv_size = {
+					.min = 8,
+					.max = 8,
+					.increment = 0
+				}
+			}, }
+		}, }
+	},
 	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 };
 
@@ -637,6 +657,14 @@ qat_crypto_sym_configure_session_cipher(struct rte_cryptodev *dev,
 		}
 		session->qat_mode = ICP_QAT_HW_CIPHER_CBC_MODE;
 		break;
+	case RTE_CRYPTO_CIPHER_DES_CBC:
+		if (qat_alg_validate_des_key(cipher_xform->key.length,
+				&session->qat_cipher_alg) != 0) {
+			PMD_DRV_LOG(ERR, "Invalid DES cipher key size");
+			goto error_out;
+		}
+		session->qat_mode = ICP_QAT_HW_CIPHER_CBC_MODE;
+		break;
 	case RTE_CRYPTO_CIPHER_3DES_CTR:
 		if (qat_alg_validate_3des_key(cipher_xform->key.length,
 				&session->qat_cipher_alg) != 0) {
@@ -839,7 +867,6 @@ unsigned qat_crypto_sym_get_session_private_size(
 	return RTE_ALIGN_CEIL(sizeof(struct qat_session), 8);
 }
 
-
 uint16_t
 qat_pmd_enqueue_op_burst(void *qp, struct rte_crypto_op **ops,
 		uint16_t nb_ops)
-- 
2.1.0