1 files changed, 109 insertions, 0 deletions
diff --git a/lib/librte_vhost/rte_vhost_crypto.h b/lib/librte_vhost/rte_vhost_crypto.h
new file mode 100644
index 00000000..f9fbc054
--- /dev/null
+++ b/lib/librte_vhost/rte_vhost_crypto.h
@@ -0,0 +1,109 @@
+/* SPDX-License-Identifier: BSD-3-Clause
+ * Copyright(c) 2017-2018 Intel Corporation
+ */
+
+#ifndef _VHOST_CRYPTO_H_
+#define _VHOST_CRYPTO_H_
+
+#define VHOST_CRYPTO_MBUF_POOL_SIZE		(8192)
+#define VHOST_CRYPTO_MAX_BURST_SIZE		(64)
+#define VHOST_CRYPTO_SESSION_MAP_ENTRIES	(1024) /**< Max nb sessions */
+/** max nb virtual queues in a burst for finalizing*/
+#define VIRTIO_CRYPTO_MAX_NUM_BURST_VQS		(64)
+
+enum rte_vhost_crypto_zero_copy {
+	RTE_VHOST_CRYPTO_ZERO_COPY_DISABLE = 0,
+	RTE_VHOST_CRYPTO_ZERO_COPY_ENABLE = 1,
+	RTE_VHOST_CRYPTO_MAX_ZERO_COPY_OPTIONS
+};
+
+/**
+ *  Create Vhost-crypto instance
+ *
+ * @param vid
+ *  The identifier of the vhost device.
+ * @param cryptodev_id
+ *  The identifier of DPDK Cryptodev, the same cryptodev_id can be assigned to
+ *  multiple Vhost-crypto devices.
+ * @param sess_pool
+ *  The pointer to the created cryptodev session pool with the private data size
+ *  matches the target DPDK Cryptodev.
+ * @param socket_id
+ *  NUMA Socket ID to allocate resources on. *
+ * @return
+ *  0 if the Vhost Crypto Instance is created successfully.
+ *  Negative integer if otherwise
+ */
+int __rte_experimental
+rte_vhost_crypto_create(int vid, uint8_t cryptodev_id,
+		struct rte_mempool *sess_pool, int socket_id);
+
+/**
+ *  Free the Vhost-crypto instance
+ *
+ * @param vid
+ *  The identifier of the vhost device.
+ * @return
+ *  0 if the Vhost Crypto Instance is created successfully.
+ *  Negative integer if otherwise.
+ */
+int __rte_experimental
+rte_vhost_crypto_free(int vid);
+
+/**
+ *  Enable or disable zero copy feature
+ *
+ * @param vid
+ *  The identifier of the vhost device.
+ * @param option
+ *  Flag of zero copy feature.
+ * @return
+ *  0 if completed successfully.
+ *  Negative integer if otherwise.
+ */
+int __rte_experimental
+rte_vhost_crypto_set_zero_copy(int vid, enum rte_vhost_crypto_zero_copy option);
+
+/**
+ * Fetch a number of vring descriptors from virt-queue and translate to DPDK
+ * crypto operations. After this function is executed, the user can enqueue
+ * the processed ops to the target cryptodev.
+ *
+ * @param vid
+ *  The identifier of the vhost device.
+ * @param qid
+ *  Virtio queue index.
+ * @param ops
+ *  The address of an array of pointers to *rte_crypto_op* structures that must
+ *  be large enough to store *nb_ops* pointers in it.
+ * @param nb_ops
+ *  The maximum number of operations to be fetched and translated.
+ * @return
+ *  The number of fetched and processed vhost crypto request operations.
+ */
+uint16_t __rte_experimental
+rte_vhost_crypto_fetch_requests(int vid, uint32_t qid,
+		struct rte_crypto_op **ops, uint16_t nb_ops);
+/**
+ * Finalize the dequeued crypto ops. After the translated crypto ops are
+ * dequeued from the cryptodev, this function shall be called to write the
+ * processed data back to the vring descriptor (if no-copy is turned off).
+ *
+ * @param ops
+ *  The address of an array of *rte_crypto_op* structure that was dequeued
+ *  from cryptodev.
+ * @param nb_ops
+ *  The number of operations contained in the array.
+ * @callfds
+ *  The callfd number(s) contained in this burst, this shall be an array with
+ *  no less than VIRTIO_CRYPTO_MAX_NUM_BURST_VQS elements.
+ * @nb_callfds
+ *  The number of call_fd numbers exist in the callfds.
+ * @return
+ *  The number of ops processed.
+ */
+uint16_t __rte_experimental
+rte_vhost_crypto_finalize_requests(struct rte_crypto_op **ops,
+		uint16_t nb_ops, int *callfds, uint16_t *nb_callfds);
+
+#endif /**< _VHOST_CRYPTO_H_ */