[PATCH v4 4/6] crypto/uadk: support cipher algorithms

[Zhangfei Gao <zhangfei.gao@linaro.org>]

Cipher algorithms:

* ``RTE_CRYPTO_CIPHER_AES_ECB``
* ``RTE_CRYPTO_CIPHER_AES_CBC``
* ``RTE_CRYPTO_CIPHER_AES_XTS``
* ``RTE_CRYPTO_CIPHER_DES_CBC``

Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
---
 doc/guides/cryptodevs/features/uadk.ini |  10 +
 doc/guides/cryptodevs/uadk.rst          |   6 +
 drivers/crypto/uadk/uadk_crypto_pmd.c   | 330 +++++++++++++++++++++++-
 3 files changed, 341 insertions(+), 5 deletions(-)

diff --git a/doc/guides/cryptodevs/features/uadk.ini b/doc/guides/cryptodevs/features/uadk.ini
index df5ad40e3d..005e08ac8d 100644
--- a/doc/guides/cryptodevs/features/uadk.ini
+++ b/doc/guides/cryptodevs/features/uadk.ini
@@ -4,12 +4,22 @@
 ; Refer to default.ini for the full list of available PMD features.
 ;
 [Features]
+Symmetric crypto       = Y
 HW Accelerated         = Y
 
 ;
 ; Supported crypto algorithms of the 'uadk' crypto driver.
 ;
 [Cipher]
+AES CBC (128)  = Y
+AES CBC (192)  = Y
+AES CBC (256)  = Y
+AES ECB (128)  = Y
+AES ECB (192)  = Y
+AES ECB (256)  = Y
+AES XTS (128)  = Y
+AES XTS (256)  = Y
+DES CBC        = Y
 
 ;
 ; Supported authentication algorithms of the 'uadk' crypto driver.
diff --git a/doc/guides/cryptodevs/uadk.rst b/doc/guides/cryptodevs/uadk.rst
index 1d4f57a226..4e26127e0e 100644
--- a/doc/guides/cryptodevs/uadk.rst
+++ b/doc/guides/cryptodevs/uadk.rst
@@ -15,6 +15,12 @@ Features
 
 UADK crypto PMD has support for:
 
+Cipher algorithms:
+
+* ``RTE_CRYPTO_CIPHER_AES_ECB``
+* ``RTE_CRYPTO_CIPHER_AES_CBC``
+* ``RTE_CRYPTO_CIPHER_AES_XTS``
+* ``RTE_CRYPTO_CIPHER_DES_CBC``
 
 Test steps
 -----------
diff --git a/drivers/crypto/uadk/uadk_crypto_pmd.c b/drivers/crypto/uadk/uadk_crypto_pmd.c
index 051d6726b0..8e2e3b7877 100644
--- a/drivers/crypto/uadk/uadk_crypto_pmd.c
+++ b/drivers/crypto/uadk/uadk_crypto_pmd.c
@@ -31,12 +31,35 @@ struct uadk_qp {
 	uint8_t temp_digest[DIGEST_LENGTH_MAX];
 } __rte_cache_aligned;
 
+enum uadk_chain_order {
+	UADK_CHAIN_ONLY_CIPHER,
+	UADK_CHAIN_NOT_SUPPORTED
+};
+
+struct uadk_crypto_session {
+	handle_t handle_cipher;
+	enum uadk_chain_order chain_order;
+
+	/* IV parameters */
+	struct {
+		uint16_t length;
+		uint16_t offset;
+	} iv;
+
+	/* Cipher Parameters */
+	struct {
+		enum rte_crypto_cipher_operation direction;
+		struct wd_cipher_req req;
+	} cipher;
+} __rte_cache_aligned;
+
 enum uadk_crypto_version {
 	UADK_CRYPTO_V2,
 	UADK_CRYPTO_V3,
 };
 
 struct uadk_crypto_priv {
+	bool env_cipher_init;
 	enum uadk_crypto_version version;
 } __rte_cache_aligned;
 
@@ -50,6 +73,86 @@ RTE_LOG_REGISTER_DEFAULT(uadk_crypto_logtype, INFO);
 		## __VA_ARGS__)
 
 static const struct rte_cryptodev_capabilities uadk_crypto_v2_capabilities[] = {
+	{	/* AES ECB */
+		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+		{.sym = {
+			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+			{.cipher = {
+				.algo = RTE_CRYPTO_CIPHER_AES_ECB,
+				.block_size = 16,
+				.key_size = {
+					.min = 16,
+					.max = 32,
+					.increment = 8
+				},
+				.iv_size = {
+					.min = 0,
+					.max = 0,
+					.increment = 0
+				}
+			}, }
+		}, }
+	},
+	{	/* AES CBC */
+		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+		{.sym = {
+			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+			{.cipher = {
+				.algo = RTE_CRYPTO_CIPHER_AES_CBC,
+				.block_size = 16,
+				.key_size = {
+					.min = 16,
+					.max = 32,
+					.increment = 8
+				},
+				.iv_size = {
+					.min = 16,
+					.max = 16,
+					.increment = 0
+				}
+			}, }
+		}, }
+	},
+	{	/* AES XTS */
+		.op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+		{.sym = {
+			.xform_type = RTE_CRYPTO_SYM_XFORM_CIPHER,
+			{.cipher = {
+				.algo = RTE_CRYPTO_CIPHER_AES_XTS,
+				.block_size = 1,
+				.key_size = {
+					.min = 32,
+					.max = 64,
+					.increment = 32
+				},
+				.iv_size = {
+					.min = 0,
+					.max = 0,
+					.increment = 0
+				}
+			}, }
+		}, }
+	},
+	{	/* 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
+				}
+			}, }
+		}, }
+	},
 	/* End of capabilities */
 	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
 };
@@ -77,8 +180,15 @@ uadk_crypto_pmd_stop(struct rte_cryptodev *dev __rte_unused)
 
 /* Close device */
 static int
-uadk_crypto_pmd_close(struct rte_cryptodev *dev __rte_unused)
+uadk_crypto_pmd_close(struct rte_cryptodev *dev)
 {
+	struct uadk_crypto_priv *priv = dev->data->dev_private;
+
+	if (priv->env_cipher_init) {
+		wd_cipher_env_uninit();
+		priv->env_cipher_init = false;
+	}
+
 	return 0;
 }
 
@@ -225,6 +335,159 @@ uadk_crypto_pmd_qp_setup(struct rte_cryptodev *dev, uint16_t qp_id,
 	return -EINVAL;
 }
 
+static unsigned int
+uadk_crypto_sym_session_get_size(struct rte_cryptodev *dev __rte_unused)
+{
+	return sizeof(struct uadk_crypto_session);
+}
+
+static enum uadk_chain_order
+uadk_get_chain_order(const struct rte_crypto_sym_xform *xform)
+{
+	enum uadk_chain_order res = UADK_CHAIN_NOT_SUPPORTED;
+
+	if (xform != NULL) {
+		if (xform->type == RTE_CRYPTO_SYM_XFORM_CIPHER) {
+			if (xform->next == NULL)
+				res = UADK_CHAIN_ONLY_CIPHER;
+		}
+	}
+
+	return res;
+}
+
+static int
+uadk_set_session_cipher_parameters(struct rte_cryptodev *dev,
+				   struct uadk_crypto_session *sess,
+				   struct rte_crypto_sym_xform *xform)
+{
+	struct uadk_crypto_priv *priv = dev->data->dev_private;
+	struct rte_crypto_cipher_xform *cipher = &xform->cipher;
+	struct wd_cipher_sess_setup setup = {0};
+	struct sched_params params = {0};
+	int ret;
+
+	if (!priv->env_cipher_init) {
+		ret = wd_cipher_env_init(NULL);
+		if (ret < 0)
+			return -EINVAL;
+		priv->env_cipher_init = true;
+	}
+
+	sess->cipher.direction = cipher->op;
+	sess->iv.offset = cipher->iv.offset;
+	sess->iv.length = cipher->iv.length;
+
+	switch (cipher->algo) {
+	/* Cover supported cipher algorithms */
+	case RTE_CRYPTO_CIPHER_AES_CTR:
+		setup.alg = WD_CIPHER_AES;
+		setup.mode = WD_CIPHER_CTR;
+		sess->cipher.req.out_bytes = 64;
+		break;
+	case RTE_CRYPTO_CIPHER_AES_ECB:
+		setup.alg = WD_CIPHER_AES;
+		setup.mode = WD_CIPHER_ECB;
+		sess->cipher.req.out_bytes = 16;
+		break;
+	case RTE_CRYPTO_CIPHER_AES_CBC:
+		setup.alg = WD_CIPHER_AES;
+		setup.mode = WD_CIPHER_CBC;
+		if (cipher->key.length == 16)
+			sess->cipher.req.out_bytes = 16;
+		else
+			sess->cipher.req.out_bytes = 64;
+		break;
+	case RTE_CRYPTO_CIPHER_AES_XTS:
+		setup.alg = WD_CIPHER_AES;
+		setup.mode = WD_CIPHER_XTS;
+		if (cipher->key.length == 16)
+			sess->cipher.req.out_bytes = 32;
+		else
+			sess->cipher.req.out_bytes = 512;
+		break;
+	default:
+		ret = -ENOTSUP;
+		goto env_uninit;
+	}
+
+	params.numa_id = -1;	/* choose nearby numa node */
+	setup.sched_param = &params;
+	sess->handle_cipher = wd_cipher_alloc_sess(&setup);
+	if (!sess->handle_cipher) {
+		UADK_LOG(ERR, "uadk failed to alloc session!\n");
+		ret = -EINVAL;
+		goto env_uninit;
+	}
+
+	ret = wd_cipher_set_key(sess->handle_cipher, cipher->key.data, cipher->key.length);
+	if (ret) {
+		wd_cipher_free_sess(sess->handle_cipher);
+		UADK_LOG(ERR, "uadk failed to set key!\n");
+		ret = -EINVAL;
+		goto env_uninit;
+	}
+
+	return 0;
+
+env_uninit:
+	wd_cipher_env_uninit();
+	priv->env_cipher_init = false;
+	return ret;
+}
+
+static int
+uadk_crypto_sym_session_configure(struct rte_cryptodev *dev,
+				  struct rte_crypto_sym_xform *xform,
+				  struct rte_cryptodev_sym_session *session)
+{
+	struct rte_crypto_sym_xform *cipher_xform = NULL;
+	struct uadk_crypto_session *sess = CRYPTODEV_GET_SYM_SESS_PRIV(session);
+	int ret;
+
+	if (unlikely(!sess)) {
+		UADK_LOG(ERR, "Session not available");
+		return -EINVAL;
+	}
+
+	sess->chain_order = uadk_get_chain_order(xform);
+	switch (sess->chain_order) {
+	case UADK_CHAIN_ONLY_CIPHER:
+		cipher_xform = xform;
+		break;
+	default:
+		return -ENOTSUP;
+	}
+
+	if (cipher_xform) {
+		ret = uadk_set_session_cipher_parameters(dev, sess, cipher_xform);
+		if (ret != 0) {
+			UADK_LOG(ERR,
+				"Invalid/unsupported cipher parameters");
+			return ret;
+		}
+	}
+
+	return 0;
+}
+
+static void
+uadk_crypto_sym_session_clear(struct rte_cryptodev *dev __rte_unused,
+			      struct rte_cryptodev_sym_session *session)
+{
+	struct uadk_crypto_session *sess = CRYPTODEV_GET_SYM_SESS_PRIV(session);
+
+	if (unlikely(sess == NULL)) {
+		UADK_LOG(ERR, "Session not available");
+		return;
+	}
+
+	if (sess->handle_cipher) {
+		wd_cipher_free_sess(sess->handle_cipher);
+		sess->handle_cipher = 0;
+	}
+}
+
 static struct rte_cryptodev_ops uadk_crypto_pmd_ops = {
 		.dev_configure		= uadk_crypto_pmd_config,
 		.dev_start		= uadk_crypto_pmd_start,
@@ -235,16 +498,54 @@ static struct rte_cryptodev_ops uadk_crypto_pmd_ops = {
 		.dev_infos_get		= uadk_crypto_pmd_info_get,
 		.queue_pair_setup	= uadk_crypto_pmd_qp_setup,
 		.queue_pair_release	= uadk_crypto_pmd_qp_release,
-		.sym_session_get_size	= NULL,
-		.sym_session_configure	= NULL,
-		.sym_session_clear	= NULL,
+		.sym_session_get_size	= uadk_crypto_sym_session_get_size,
+		.sym_session_configure	= uadk_crypto_sym_session_configure,
+		.sym_session_clear	= uadk_crypto_sym_session_clear,
 };
 
+static void
+uadk_process_cipher_op(struct rte_crypto_op *op,
+		       struct uadk_crypto_session *sess,
+		       struct rte_mbuf *msrc, struct rte_mbuf *mdst)
+{
+	uint32_t off = op->sym->cipher.data.offset;
+	int ret;
+
+	if (!sess) {
+		op->status = RTE_COMP_OP_STATUS_INVALID_ARGS;
+		return;
+	}
+
+	sess->cipher.req.src = rte_pktmbuf_mtod_offset(msrc, uint8_t *, off);
+	sess->cipher.req.in_bytes = op->sym->cipher.data.length;
+	sess->cipher.req.dst = rte_pktmbuf_mtod_offset(mdst, uint8_t *, off);
+	sess->cipher.req.out_buf_bytes = sess->cipher.req.in_bytes;
+	sess->cipher.req.iv_bytes = sess->iv.length;
+	sess->cipher.req.iv = rte_crypto_op_ctod_offset(op, uint8_t *,
+							sess->iv.offset);
+	if (sess->cipher.direction == RTE_CRYPTO_CIPHER_OP_ENCRYPT)
+		sess->cipher.req.op_type = WD_CIPHER_ENCRYPTION;
+	else
+		sess->cipher.req.op_type = WD_CIPHER_DECRYPTION;
+
+	do {
+		ret = wd_do_cipher_sync(sess->handle_cipher, &sess->cipher.req);
+	} while (ret == -WD_EBUSY);
+
+	if (sess->cipher.req.out_buf_bytes > sess->cipher.req.in_bytes)
+		op->status = RTE_COMP_OP_STATUS_OUT_OF_SPACE_TERMINATED;
+
+	if (ret)
+		op->status = RTE_COMP_OP_STATUS_ERROR;
+}
+
 static uint16_t
 uadk_crypto_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 			  uint16_t nb_ops)
 {
 	struct uadk_qp *qp = queue_pair;
+	struct uadk_crypto_session *sess = NULL;
+	struct rte_mbuf *msrc, *mdst;
 	struct rte_crypto_op *op;
 	uint16_t enqd = 0;
 	int i, ret;
@@ -252,6 +553,23 @@ uadk_crypto_enqueue_burst(void *queue_pair, struct rte_crypto_op **ops,
 	for (i = 0; i < nb_ops; i++) {
 		op = ops[i];
 		op->status = RTE_CRYPTO_OP_STATUS_NOT_PROCESSED;
+		msrc = op->sym->m_src;
+		mdst = op->sym->m_dst ? op->sym->m_dst : op->sym->m_src;
+
+		if (op->sess_type == RTE_CRYPTO_OP_WITH_SESSION) {
+			if (likely(op->sym->session != NULL))
+				sess = CRYPTODEV_GET_SYM_SESS_PRIV(
+					op->sym->session);
+		}
+
+		switch (sess->chain_order) {
+		case UADK_CHAIN_ONLY_CIPHER:
+			uadk_process_cipher_op(op, sess, msrc, mdst);
+			break;
+		default:
+			op->status = RTE_CRYPTO_OP_STATUS_ERROR;
+			break;
+		}
 
 		if (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED)
 			op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
@@ -327,7 +645,9 @@ uadk_cryptodev_probe(struct rte_vdev_device *vdev)
 	dev->driver_id = uadk_cryptodev_driver_id;
 	dev->dequeue_burst = uadk_crypto_dequeue_burst;
 	dev->enqueue_burst = uadk_crypto_enqueue_burst;
-	dev->feature_flags = RTE_CRYPTODEV_FF_HW_ACCELERATED;
+	dev->feature_flags = RTE_CRYPTODEV_FF_HW_ACCELERATED |
+			     RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
+			     RTE_CRYPTODEV_FF_SYM_SESSIONLESS;
 	priv = dev->data->dev_private;
 	priv->version = version;
 
-- 
2.36.1