[dpdk-dev] [PATCH v4 13/14] crypto/ipsec_mb: add chacha20-poly1305 PMD to framework

[Ciara Power <ciara.power@intel.com>]

From: Kai Ji <kai.ji@intel.com>

Add in new chacha20_poly1305 PMD to the ipsec_mb framework.

Signed-off-by: Kai Ji <kai.ji@intel.com>
Signed-off-by: Ciara Power <ciara.power@intel.com>
Acked-by: Ray Kinsella <mdr@ashroe.eu>

---
v4:
  - Fixed some function names.
  - Removed unnecessary enqueued counts from process_ops function.
  - Fixed table label in doc.
  - Split into private header file.
  - Removed security includes.
  - Added sub release note under ipsec_mb note.
  - Split out test app changes to new patch.
  - Fixed copyright years.
  - Added docs to maintainers file.
v3:
  - Fixed some formatting.
  - Removed unnecessary get session function.
v2:
  - Added unused tag to session configure parameter.
  - Added release note.
  - Added documentation for PMD.
---
 MAINTAINERS                                   |   2 +
 doc/guides/cryptodevs/chacha20_poly1305.rst   |  99 +++++
 .../cryptodevs/features/chacha20_poly1305.ini |  35 ++
 doc/guides/cryptodevs/index.rst               |   1 +
 doc/guides/rel_notes/release_21_11.rst        |   1 +
 drivers/crypto/ipsec_mb/ipsec_mb_private.h    |   7 +
 drivers/crypto/ipsec_mb/meson.build           |   1 +
 drivers/crypto/ipsec_mb/pmd_chacha_poly.c     | 408 ++++++++++++++++++
 .../crypto/ipsec_mb/pmd_chacha_poly_priv.h    |  74 ++++
 9 files changed, 628 insertions(+)
 create mode 100644 doc/guides/cryptodevs/chacha20_poly1305.rst
 create mode 100644 doc/guides/cryptodevs/features/chacha20_poly1305.ini
 create mode 100644 drivers/crypto/ipsec_mb/pmd_chacha_poly.c
 create mode 100644 drivers/crypto/ipsec_mb/pmd_chacha_poly_priv.h

diff --git a/MAINTAINERS b/MAINTAINERS
index 1c269bd991..9d11c76482 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1059,11 +1059,13 @@ M: Pablo de Lara <pablo.de.lara.guarch@intel.com>
 F: drivers/crypto/ipsec_mb/
 F: doc/guides/cryptodevs/aesni_gcm.rst
 F: doc/guides/cryptodevs/aesni_mb.rst
+F: doc/guides/cryptodevs/chacha20_poly1305.rst
 F: doc/guides/cryptodevs/kasumi.rst
 F: doc/guides/cryptodevs/snow3g.rst
 F: doc/guides/cryptodevs/zuc.rst
 F: doc/guides/cryptodevs/features/aesni_gcm.ini
 F: doc/guides/cryptodevs/features/aesni_mb.ini
+F: doc/guides/cryptodevs/features/chacha20_poly1305.ini
 F: doc/guides/cryptodevs/features/kasumi.ini
 F: doc/guides/cryptodevs/features/snow3g.ini
 F: doc/guides/cryptodevs/features/zuc.ini
diff --git a/doc/guides/cryptodevs/chacha20_poly1305.rst b/doc/guides/cryptodevs/chacha20_poly1305.rst
new file mode 100644
index 0000000000..4db260818e
--- /dev/null
+++ b/doc/guides/cryptodevs/chacha20_poly1305.rst
@@ -0,0 +1,99 @@
+..  SPDX-License-Identifier: BSD-3-Clause
+    Copyright(c) 2021 Intel Corporation.
+
+Chacha20-poly1305 Crypto Poll Mode Driver
+=========================================
+
+The Chacha20-poly1305 PMD provides poll mode crypto driver support for
+utilizing `Intel IPSec Multi-buffer library <https://github.com/01org/intel-ipsec-mb>`_.
+
+Features
+--------
+
+Chacha20-poly1305 PMD has support for:
+
+AEAD algorithms:
+
+* RTE_CRYPTO_AEAD_CHACHA20_POLY1305
+
+
+Installation
+------------
+
+To build DPDK with the Chacha20-poly1305 PMD the user is required to download
+the multi-buffer library from `here <https://github.com/01org/intel-ipsec-mb>`_
+and compile it on their user system before building DPDK.
+The latest version of the library supported by this PMD is v1.0, which
+can be downloaded from `<https://github.com/01org/intel-ipsec-mb/archive/v1.0.zip>`_.
+
+After downloading the library, the user needs to unpack and compile it
+on their system before building DPDK:
+
+.. code-block:: console
+
+    make
+    make install
+
+The library requires NASM to be built. Depending on the library version, it might
+require a minimum NASM version (e.g. v0.54 requires at least NASM 2.14).
+
+NASM is packaged for different OS. However, on some OS the version is too old,
+so a manual installation is required. In that case, NASM can be downloaded from
+`NASM website <https://www.nasm.us/pub/nasm/releasebuilds/?C=M;O=D>`_.
+Once it is downloaded, extract it and follow these steps:
+
+.. code-block:: console
+
+    ./configure
+    make
+    make install
+
+.. note::
+
+   Compilation of the Multi-Buffer library is broken when GCC < 5.0, if library <= v0.53.
+   If a lower GCC version than 5.0, the workaround proposed by the following link
+   should be used: `<https://github.com/intel/intel-ipsec-mb/issues/40>`_.
+
+As a reference, the following table shows a mapping between the past DPDK versions
+and the external crypto libraries supported by them:
+
+.. _table_chacha20_poly1305_versions:
+
+.. table:: DPDK and external crypto library version compatibility
+
+   =============  ================================
+   DPDK version   Crypto library version
+   =============  ================================
+   21.11+         Multi-buffer library 1.0*
+   =============  ================================
+
+\* Multi-buffer library 1.0 or newer only works for Meson but not Make build system.
+
+Initialization
+--------------
+
+In order to enable this virtual crypto PMD, user must:
+
+* Build the multi buffer library (explained in Installation section).
+
+To use the PMD in an application, user must:
+
+* Call rte_vdev_init("crypto_chacha20_poly1305") within the application.
+
+* Use --vdev="crypto_chacha20_poly1305" in the EAL options, which will call
+  rte_vdev_init() internally.
+
+The following parameters (all optional) can be provided in the previous two calls:
+
+* socket_id: Specify the socket where the memory for the device is going to be allocated
+  (by default, socket_id will be the socket where the core that is creating the PMD is running on).
+
+* max_nb_queue_pairs: Specify the maximum number of queue pairs in the device (8 by default).
+
+* max_nb_sessions: Specify the maximum number of sessions that can be created (2048 by default).
+
+Example:
+
+.. code-block:: console
+
+    --vdev="crypto_chacha20_poly1305,socket_id=0,max_nb_sessions=128"
diff --git a/doc/guides/cryptodevs/features/chacha20_poly1305.ini b/doc/guides/cryptodevs/features/chacha20_poly1305.ini
new file mode 100644
index 0000000000..3353e031c9
--- /dev/null
+++ b/doc/guides/cryptodevs/features/chacha20_poly1305.ini
@@ -0,0 +1,35 @@
+;
+; Supported features of the 'chacha20_poly1305' crypto driver.
+;
+; Refer to default.ini for the full list of available PMD features.
+;
+[Features]
+Symmetric crypto       = Y
+Sym operation chaining = Y
+Symmetric sessionless  = Y
+Non-Byte aligned data  = Y
+In Place SGL           = Y
+OOP SGL In LB  Out     = Y
+OOP LB  In LB  Out     = Y
+CPU crypto             = Y
+
+;
+; Supported crypto algorithms of the 'chacha20_poly1305' crypto driver.
+;
+[Cipher]
+
+;
+; Supported authentication algorithms of the 'chacha20_poly1305' crypto driver.
+;
+[Auth]
+
+;
+; Supported AEAD algorithms of the 'chacha20_poly1305' crypto driver.
+;
+[AEAD]
+CHACHA20-POLY1305 = Y
+
+;
+; Supported Asymmetric algorithms of the 'chacha20_poly1305' crypto driver.
+;
+[Asymmetric]
diff --git a/doc/guides/cryptodevs/index.rst b/doc/guides/cryptodevs/index.rst
index 0f981c77b5..3dcc2ecd2e 100644
--- a/doc/guides/cryptodevs/index.rst
+++ b/doc/guides/cryptodevs/index.rst
@@ -16,6 +16,7 @@ Crypto Device Drivers
     bcmfs
     caam_jr
     ccp
+    chacha20_poly1305
     cnxk
     dpaa2_sec
     dpaa_sec
diff --git a/doc/guides/rel_notes/release_21_11.rst b/doc/guides/rel_notes/release_21_11.rst
index 52ac148884..0f216c7b4f 100644
--- a/doc/guides/rel_notes/release_21_11.rst
+++ b/doc/guides/rel_notes/release_21_11.rst
@@ -109,6 +109,7 @@ New Features
     * KASUMI PMD.
     * SNOW3G PMD.
     * ZUC PMD.
+    * CHACHA20_POLY1305 PMD.
 
 * **Updated the aesni_mb crypto PMD.**
 
diff --git a/drivers/crypto/ipsec_mb/ipsec_mb_private.h b/drivers/crypto/ipsec_mb/ipsec_mb_private.h
index fef3fcab68..866722d6f4 100644
--- a/drivers/crypto/ipsec_mb/ipsec_mb_private.h
+++ b/drivers/crypto/ipsec_mb/ipsec_mb_private.h
@@ -49,6 +49,9 @@ extern RTE_DEFINE_PER_LCORE(IMB_MGR *, mb_mgr);
 #define CRYPTODEV_NAME_ZUC_PMD crypto_zuc
 /**< IPSEC Multi buffer PMD zuc device name */
 
+#define CRYPTODEV_NAME_CHACHA20_POLY1305_PMD crypto_chacha20_poly1305
+/**< IPSEC Multi buffer PMD chacha20_poly1305 device name */
+
 /** PMD LOGTYPE DRIVER, common to all PMDs */
 extern int ipsec_mb_logtype_driver;
 #define IPSEC_MB_LOG(level, fmt, ...)                                         \
@@ -62,6 +65,7 @@ enum ipsec_mb_pmd_types {
 	IPSEC_MB_PMD_TYPE_KASUMI,
 	IPSEC_MB_PMD_TYPE_SNOW3G,
 	IPSEC_MB_PMD_TYPE_ZUC,
+	IPSEC_MB_PMD_TYPE_CHACHA20_POLY1305,
 	IPSEC_MB_N_PMD_TYPES
 };
 
@@ -85,6 +89,7 @@ extern uint8_t pmd_driver_id_aesni_gcm;
 extern uint8_t pmd_driver_id_kasumi;
 extern uint8_t pmd_driver_id_snow3g;
 extern uint8_t pmd_driver_id_zuc;
+extern uint8_t pmd_driver_id_chacha20_poly1305;
 
 /** Helper function. Gets driver ID based on PMD type */
 static __rte_always_inline uint8_t
@@ -101,6 +106,8 @@ ipsec_mb_get_driver_id(enum ipsec_mb_pmd_types pmd_type)
 		return pmd_driver_id_snow3g;
 	case IPSEC_MB_PMD_TYPE_ZUC:
 		return pmd_driver_id_zuc;
+	case IPSEC_MB_PMD_TYPE_CHACHA20_POLY1305:
+		return pmd_driver_id_chacha20_poly1305;
 	default:
 		break;
 	}
diff --git a/drivers/crypto/ipsec_mb/meson.build b/drivers/crypto/ipsec_mb/meson.build
index c712c2adb1..d7037daea1 100644
--- a/drivers/crypto/ipsec_mb/meson.build
+++ b/drivers/crypto/ipsec_mb/meson.build
@@ -25,6 +25,7 @@ sources = files('ipsec_mb_private.c',
 		'ipsec_mb_ops.c',
 		'pmd_aesni_mb.c',
 		'pmd_aesni_gcm.c',
+		'pmd_chacha_poly.c',
 		'pmd_kasumi.c',
 		'pmd_snow3g.c',
 		'pmd_zuc.c'
diff --git a/drivers/crypto/ipsec_mb/pmd_chacha_poly.c b/drivers/crypto/ipsec_mb/pmd_chacha_poly.c
new file mode 100644
index 0000000000..d953d6e5f5
--- /dev/null
+++ b/drivers/crypto/ipsec_mb/pmd_chacha_poly.c
@@ -0,0 +1,408 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Intel Corporation
+ */
+
+#include "pmd_chacha_poly_priv.h"
+
+/** Parse crypto xform chain and set private session parameters. */
+static int
+chacha20_poly1305_session_configure(IMB_MGR * mb_mgr __rte_unused,
+		void *priv_sess, const struct rte_crypto_sym_xform *xform)
+{
+	struct chacha20_poly1305_session *sess = priv_sess;
+	const struct rte_crypto_sym_xform *auth_xform;
+	const struct rte_crypto_sym_xform *cipher_xform;
+	const struct rte_crypto_sym_xform *aead_xform;
+
+	uint8_t key_length;
+	const uint8_t *key;
+	enum ipsec_mb_operation mode;
+	int ret = 0;
+
+	ret = ipsec_mb_parse_xform(xform, &mode, &auth_xform,
+				&cipher_xform, &aead_xform);
+	if (ret)
+		return ret;
+
+	sess->op = mode;
+
+	switch (sess->op) {
+	case IPSEC_MB_OP_AEAD_AUTHENTICATED_ENCRYPT:
+	case IPSEC_MB_OP_AEAD_AUTHENTICATED_DECRYPT:
+		if (aead_xform->aead.algo !=
+				RTE_CRYPTO_AEAD_CHACHA20_POLY1305) {
+			IPSEC_MB_LOG(ERR,
+			"The only combined operation supported is CHACHA20 POLY1305");
+			ret = -ENOTSUP;
+			goto error_exit;
+		}
+		/* Set IV parameters */
+		sess->iv.offset = aead_xform->aead.iv.offset;
+		sess->iv.length = aead_xform->aead.iv.length;
+		key_length = aead_xform->aead.key.length;
+		key = aead_xform->aead.key.data;
+		sess->aad_length = aead_xform->aead.aad_length;
+		sess->req_digest_length = aead_xform->aead.digest_length;
+		break;
+	default:
+		IPSEC_MB_LOG(
+		    ERR, "Wrong xform type, has to be AEAD or authentication");
+		ret = -ENOTSUP;
+		goto error_exit;
+	}
+
+	/* IV check */
+	if (sess->iv.length != CHACHA20_POLY1305_IV_LENGTH &&
+		sess->iv.length != 0) {
+		IPSEC_MB_LOG(ERR, "Wrong IV length");
+		ret = -EINVAL;
+		goto error_exit;
+	}
+
+	/* Check key length */
+	if (key_length != CHACHA20_POLY1305_KEY_SIZE) {
+		IPSEC_MB_LOG(ERR, "Invalid key length");
+		ret = -EINVAL;
+		goto error_exit;
+	} else {
+		memcpy(sess->key, key, CHACHA20_POLY1305_KEY_SIZE);
+	}
+
+	/* Digest check */
+	if (sess->req_digest_length !=  CHACHA20_POLY1305_DIGEST_LENGTH) {
+		IPSEC_MB_LOG(ERR, "Invalid digest length");
+		ret = -EINVAL;
+		goto error_exit;
+	} else {
+		sess->gen_digest_length = CHACHA20_POLY1305_DIGEST_LENGTH;
+	}
+
+error_exit:
+	return ret;
+}
+
+/**
+ * Process a crypto operation, calling
+ * the direct chacha poly API from the multi buffer library.
+ *
+ * @param	qp		queue pair
+ * @param	op		symmetric crypto operation
+ * @param	session		chacha poly session
+ *
+ * @return
+ * - Return 0 if success
+ */
+static int
+chacha20_poly1305_crypto_op(struct ipsec_mb_qp *qp, struct rte_crypto_op *op,
+		struct chacha20_poly1305_session *session)
+{
+	struct chacha20_poly1305_qp_data *qp_data =
+					ipsec_mb_get_qp_private_data(qp);
+	uint8_t *src, *dst;
+	uint8_t *iv_ptr;
+	struct rte_crypto_sym_op *sym_op = op->sym;
+	struct rte_mbuf *m_src = sym_op->m_src;
+	uint32_t offset, data_offset, data_length;
+	uint32_t part_len, data_len;
+	int total_len;
+	uint8_t *tag;
+	unsigned int oop = 0;
+
+	offset = sym_op->aead.data.offset;
+	data_offset = offset;
+	data_length = sym_op->aead.data.length;
+	RTE_ASSERT(m_src != NULL);
+
+	while (offset >= m_src->data_len && data_length != 0) {
+		offset -= m_src->data_len;
+		m_src = m_src->next;
+
+		RTE_ASSERT(m_src != NULL);
+	}
+
+	src = rte_pktmbuf_mtod_offset(m_src, uint8_t *, offset);
+
+	data_len = m_src->data_len - offset;
+	part_len = (data_len < data_length) ? data_len :
+			data_length;
+
+	/* In-place */
+	if (sym_op->m_dst == NULL || (sym_op->m_dst == sym_op->m_src))
+		dst = src;
+	/* Out-of-place */
+	else {
+		oop = 1;
+		/* Segmented destination buffer is not supported
+		 * if operation is Out-of-place
+		 */
+		RTE_ASSERT(rte_pktmbuf_is_contiguous(sym_op->m_dst));
+		dst = rte_pktmbuf_mtod_offset(sym_op->m_dst, uint8_t *,
+					data_offset);
+	}
+
+	iv_ptr = rte_crypto_op_ctod_offset(op, uint8_t *,
+				session->iv.offset);
+
+	IMB_CHACHA20_POLY1305_INIT(qp->mb_mgr, session->key,
+				&qp_data->chacha20_poly1305_ctx_data,
+				iv_ptr,	sym_op->aead.aad.data,
+				(uint64_t)session->aad_length);
+
+	if (session->op == IPSEC_MB_OP_AEAD_AUTHENTICATED_ENCRYPT) {
+		IMB_CHACHA20_POLY1305_ENC_UPDATE(qp->mb_mgr,
+				session->key,
+				&qp_data->chacha20_poly1305_ctx_data,
+				dst, src, (uint64_t)part_len);
+		total_len = data_length - part_len;
+
+		while (total_len) {
+			m_src = m_src->next;
+			RTE_ASSERT(m_src != NULL);
+
+			src = rte_pktmbuf_mtod(m_src, uint8_t *);
+			if (oop)
+				dst += part_len;
+			else
+				dst = src;
+			part_len = (m_src->data_len < total_len) ?
+					m_src->data_len : total_len;
+
+			if (dst == NULL || src == NULL) {
+				IPSEC_MB_LOG(ERR, "Invalid src or dst input");
+				return -EINVAL;
+			}
+			IMB_CHACHA20_POLY1305_ENC_UPDATE(qp->mb_mgr,
+					session->key,
+					&qp_data->chacha20_poly1305_ctx_data,
+					dst, src, (uint64_t)part_len);
+			total_len -= part_len;
+			if (total_len < 0) {
+				IPSEC_MB_LOG(ERR, "Invalid part len");
+				return -EINVAL;
+			}
+		}
+
+		tag = sym_op->aead.digest.data;
+		IMB_CHACHA20_POLY1305_ENC_FINALIZE(qp->mb_mgr,
+					&qp_data->chacha20_poly1305_ctx_data,
+					tag, session->gen_digest_length);
+
+	} else {
+		IMB_CHACHA20_POLY1305_DEC_UPDATE(qp->mb_mgr,
+					session->key,
+					&qp_data->chacha20_poly1305_ctx_data,
+					dst, src, (uint64_t)part_len);
+
+		total_len = data_length - part_len;
+
+		while (total_len) {
+			m_src = m_src->next;
+
+			RTE_ASSERT(m_src != NULL);
+
+			src = rte_pktmbuf_mtod(m_src, uint8_t *);
+			if (oop)
+				dst += part_len;
+			else
+				dst = src;
+			part_len = (m_src->data_len < total_len) ?
+					m_src->data_len : total_len;
+
+			if (dst == NULL || src == NULL) {
+				IPSEC_MB_LOG(ERR, "Invalid src or dst input");
+				return -EINVAL;
+			}
+			IMB_CHACHA20_POLY1305_DEC_UPDATE(qp->mb_mgr,
+					session->key,
+					&qp_data->chacha20_poly1305_ctx_data,
+					dst, src, (uint64_t)part_len);
+			total_len -= part_len;
+			if (total_len < 0) {
+				IPSEC_MB_LOG(ERR, "Invalid part len");
+				return -EINVAL;
+			}
+		}
+
+		tag = qp_data->temp_digest;
+		IMB_CHACHA20_POLY1305_DEC_FINALIZE(qp->mb_mgr,
+					&qp_data->chacha20_poly1305_ctx_data,
+					tag, session->gen_digest_length);
+	}
+
+	return 0;
+}
+
+/**
+ * Process a completed chacha poly op
+ *
+ * @param qp		Queue Pair to process
+ * @param op		Crypto operation
+ * @param sess		Crypto session
+ *
+ * @return
+ * - void
+ */
+static void
+post_process_chacha20_poly1305_crypto_op(struct ipsec_mb_qp *qp,
+		struct rte_crypto_op *op,
+		struct chacha20_poly1305_session *session)
+{
+	struct chacha20_poly1305_qp_data *qp_data =
+					ipsec_mb_get_qp_private_data(qp);
+
+	op->status = RTE_CRYPTO_OP_STATUS_SUCCESS;
+	/* Verify digest if required */
+	if (session->op == IPSEC_MB_OP_AEAD_AUTHENTICATED_DECRYPT ||
+			session->op == IPSEC_MB_OP_HASH_VERIFY_ONLY) {
+		uint8_t *digest = op->sym->aead.digest.data;
+		uint8_t *tag = qp_data->temp_digest;
+
+#ifdef RTE_LIBRTE_PMD_CHACHA20_POLY1305_DEBUG
+		rte_hexdump(stdout, "auth tag (orig):",
+				digest, session->req_digest_length);
+		rte_hexdump(stdout, "auth tag (calc):",
+				tag, session->req_digest_length);
+#endif
+		if (memcmp(tag, digest,	session->req_digest_length) != 0)
+			op->status = RTE_CRYPTO_OP_STATUS_AUTH_FAILED;
+
+	}
+
+}
+
+/**
+ * Process a completed Chacha20_poly1305 request
+ *
+ * @param qp		Queue Pair to process
+ * @param op		Crypto operation
+ * @param sess		Crypto session
+ *
+ * @return
+ * - void
+ */
+static void
+handle_completed_chacha20_poly1305_crypto_op(struct ipsec_mb_qp *qp,
+		struct rte_crypto_op *op,
+		struct chacha20_poly1305_session *sess)
+{
+	post_process_chacha20_poly1305_crypto_op(qp, op, sess);
+
+	/* Free session if a session-less crypto op */
+	if (op->sess_type == RTE_CRYPTO_OP_SESSIONLESS) {
+		memset(sess, 0, sizeof(struct chacha20_poly1305_session));
+		memset(op->sym->session, 0,
+			rte_cryptodev_sym_get_existing_header_session_size(
+				op->sym->session));
+		rte_mempool_put(qp->sess_mp_priv, sess);
+		rte_mempool_put(qp->sess_mp, op->sym->session);
+		op->sym->session = NULL;
+	}
+}
+
+static uint16_t
+chacha20_poly1305_pmd_dequeue_burst(void *queue_pair,
+		struct rte_crypto_op **ops, uint16_t nb_ops)
+{
+	struct chacha20_poly1305_session *sess;
+	struct ipsec_mb_qp *qp = queue_pair;
+
+	int retval = 0;
+	unsigned int i = 0, nb_dequeued;
+
+	nb_dequeued = rte_ring_dequeue_burst(qp->ingress_queue,
+			(void **)ops, nb_ops, NULL);
+
+	for (i = 0; i < nb_dequeued; i++) {
+
+		sess = ipsec_mb_get_session_private(qp, ops[i]);
+		if (unlikely(sess == NULL)) {
+			ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+			qp->stats.dequeue_err_count++;
+			break;
+		}
+
+		retval = chacha20_poly1305_crypto_op(qp, ops[i], sess);
+		if (retval < 0) {
+			ops[i]->status = RTE_CRYPTO_OP_STATUS_INVALID_ARGS;
+			qp->stats.dequeue_err_count++;
+			break;
+		}
+
+		handle_completed_chacha20_poly1305_crypto_op(qp, ops[i], sess);
+	}
+
+	qp->stats.dequeued_count += i;
+
+	return i;
+}
+
+struct rte_cryptodev_ops chacha20_poly1305_pmd_ops = {
+	.dev_configure = ipsec_mb_config,
+	.dev_start = ipsec_mb_start,
+	.dev_stop = ipsec_mb_stop,
+	.dev_close = ipsec_mb_close,
+
+	.stats_get = ipsec_mb_stats_get,
+	.stats_reset = ipsec_mb_stats_reset,
+
+	.dev_infos_get = ipsec_mb_info_get,
+
+	.queue_pair_setup = ipsec_mb_qp_setup,
+	.queue_pair_release = ipsec_mb_qp_release,
+
+	.sym_session_get_size = ipsec_mb_sym_session_get_size,
+	.sym_session_configure = ipsec_mb_sym_session_configure,
+	.sym_session_clear = ipsec_mb_sym_session_clear
+};
+
+struct rte_cryptodev_ops *rte_chacha20_poly1305_pmd_ops =
+						&chacha20_poly1305_pmd_ops;
+
+static int
+chacha20_poly1305_probe(struct rte_vdev_device *vdev)
+{
+	return ipsec_mb_create(vdev, IPSEC_MB_PMD_TYPE_CHACHA20_POLY1305);
+}
+
+static struct rte_vdev_driver cryptodev_chacha20_poly1305_pmd_drv = {
+	.probe = chacha20_poly1305_probe,
+	.remove = ipsec_mb_remove
+};
+
+static struct cryptodev_driver chacha20_poly1305_crypto_drv;
+
+RTE_PMD_REGISTER_VDEV(CRYPTODEV_NAME_CHACHA20_POLY1305_PMD,
+					cryptodev_chacha20_poly1305_pmd_drv);
+RTE_PMD_REGISTER_ALIAS(CRYPTODEV_NAME_CHACHA20_POLY1305_PMD,
+					cryptodev_chacha20_poly1305_pmd);
+RTE_PMD_REGISTER_PARAM_STRING(CRYPTODEV_NAME_CHACHA20_POLY1305_PMD,
+			       "max_nb_queue_pairs=<int> socket_id=<int>");
+RTE_PMD_REGISTER_CRYPTO_DRIVER(chacha20_poly1305_crypto_drv,
+				cryptodev_chacha20_poly1305_pmd_drv.driver,
+				pmd_driver_id_chacha20_poly1305);
+
+/* Constructor function to register chacha20_poly1305 PMD */
+RTE_INIT(ipsec_mb_register_chacha20_poly1305)
+{
+	struct ipsec_mb_internals *chacha_poly_data
+		= &ipsec_mb_pmds[IPSEC_MB_PMD_TYPE_CHACHA20_POLY1305];
+
+	chacha_poly_data->caps = chacha20_poly1305_capabilities;
+	chacha_poly_data->dequeue_burst = chacha20_poly1305_pmd_dequeue_burst;
+	chacha_poly_data->feature_flags =
+		RTE_CRYPTODEV_FF_SYMMETRIC_CRYPTO |
+		RTE_CRYPTODEV_FF_SYM_OPERATION_CHAINING |
+		RTE_CRYPTODEV_FF_IN_PLACE_SGL |
+		RTE_CRYPTODEV_FF_OOP_SGL_IN_LB_OUT |
+		RTE_CRYPTODEV_FF_OOP_LB_IN_LB_OUT |
+		RTE_CRYPTODEV_FF_SYM_CPU_CRYPTO |
+		RTE_CRYPTODEV_FF_SYM_SESSIONLESS;
+	chacha_poly_data->internals_priv_size = 0;
+	chacha_poly_data->ops = &chacha20_poly1305_pmd_ops;
+	chacha_poly_data->qp_priv_size =
+			sizeof(struct chacha20_poly1305_qp_data);
+	chacha_poly_data->session_configure =
+			chacha20_poly1305_session_configure;
+	chacha_poly_data->session_priv_size =
+			sizeof(struct chacha20_poly1305_session);
+}
diff --git a/drivers/crypto/ipsec_mb/pmd_chacha_poly_priv.h b/drivers/crypto/ipsec_mb/pmd_chacha_poly_priv.h
new file mode 100644
index 0000000000..842f62f5d1
--- /dev/null
+++ b/drivers/crypto/ipsec_mb/pmd_chacha_poly_priv.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2021 Intel Corporation
+ */
+
+#ifndef _PMD_CHACHA_POLY_PRIV_H_
+#define _PMD_CHACHA_POLY_PRIV_H_
+
+#include "ipsec_mb_private.h"
+
+#define CHACHA20_POLY1305_IV_LENGTH 12
+#define CHACHA20_POLY1305_DIGEST_LENGTH 16
+#define CHACHA20_POLY1305_KEY_SIZE  32
+
+static const
+struct rte_cryptodev_capabilities chacha20_poly1305_capabilities[] = {
+	{/* CHACHA20-POLY1305 */
+	    .op = RTE_CRYPTO_OP_TYPE_SYMMETRIC,
+	    {.sym = {
+			.xform_type = RTE_CRYPTO_SYM_XFORM_AEAD,
+		    {.aead = {
+				.algo = RTE_CRYPTO_AEAD_CHACHA20_POLY1305,
+				.block_size = 64,
+				.key_size = {
+					.min = 32,
+					.max = 32,
+					.increment = 0},
+				.digest_size = {
+					.min = 16,
+					.max = 16,
+					.increment = 0},
+				.aad_size = {
+					.min = 0,
+					.max = 240,
+					.increment = 1},
+				.iv_size = {
+					.min = 12,
+					.max = 12,
+					.increment = 0},
+			    },
+			}
+		},}
+	},
+	RTE_CRYPTODEV_END_OF_CAPABILITIES_LIST()
+};
+
+uint8_t pmd_driver_id_chacha20_poly1305;
+
+/** CHACHA20 POLY1305 private session structure */
+struct chacha20_poly1305_session {
+	struct {
+		uint16_t length;
+		uint16_t offset;
+	} iv;
+	/**< IV parameters */
+	uint16_t aad_length;
+	/**< AAD length */
+	uint16_t req_digest_length;
+	/**< Requested digest length */
+	uint16_t gen_digest_length;
+	/**< Generated digest length */
+	uint8_t key[CHACHA20_POLY1305_KEY_SIZE];
+	enum ipsec_mb_operation op;
+} __rte_cache_aligned;
+
+struct chacha20_poly1305_qp_data {
+	struct chacha20_poly1305_context_data chacha20_poly1305_ctx_data;
+	uint8_t temp_digest[CHACHA20_POLY1305_DIGEST_LENGTH];
+	/**< Buffer used to store the digest generated
+	 * by the driver when verifying a digest provided
+	 * by the user (using authentication verify operation)
+	 */
+};
+
+#endif /* _PMD_CHACHA_POLY_PRIV_H_ */
-- 
2.25.1