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154 lines
4.1 KiB
C
154 lines
4.1 KiB
C
/*
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* QEMU Crypto Device Common Vhost Implement
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*
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* Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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*
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* Authors:
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* Gonglei <arei.gonglei@huawei.com>
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* Jay Zhou <jianjay.zhou@huawei.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef CRYPTODEV_VHOST_H
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#define CRYPTODEV_VHOST_H
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#include "hw/virtio/vhost.h"
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#include "hw/virtio/vhost-backend.h"
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#include "chardev/char.h"
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#include "sysemu/cryptodev.h"
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typedef struct CryptoDevBackendVhostOptions {
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VhostBackendType backend_type;
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void *opaque;
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int total_queues;
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CryptoDevBackendClient *cc;
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} CryptoDevBackendVhostOptions;
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typedef struct CryptoDevBackendVhost {
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struct vhost_dev dev;
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struct vhost_virtqueue vqs[1];
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int backend;
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CryptoDevBackendClient *cc;
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} CryptoDevBackendVhost;
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/**
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* cryptodev_vhost_get_max_queues:
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* @crypto: the cryptodev backend common vhost object
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*
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* Get the maximum queue number of @crypto.
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*
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*
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* Returns: the maximum queue number
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*/
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uint64_t
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cryptodev_vhost_get_max_queues(
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CryptoDevBackendVhost *crypto);
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/**
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* cryptodev_vhost_init:
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* @options: the common vhost object's option
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*
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* Creates a new cryptodev backend common vhost object
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*
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** The returned object must be released with
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* cryptodev_vhost_cleanup() when no
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* longer required
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*
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* Returns: the cryptodev backend common vhost object
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*/
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struct CryptoDevBackendVhost *
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cryptodev_vhost_init(
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CryptoDevBackendVhostOptions *options);
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/**
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* cryptodev_vhost_cleanup:
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* @crypto: the cryptodev backend common vhost object
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*
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* Clean the resource associated with @crypto that realizaed
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* by cryptodev_vhost_init()
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*
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*/
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void cryptodev_vhost_cleanup(
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CryptoDevBackendVhost *crypto);
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/**
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* cryptodev_get_vhost:
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* @cc: the client object for each queue
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* @b: the cryptodev backend common vhost object
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* @queue: the cryptodev backend queue index
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*
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* Gets a new cryptodev backend common vhost object based on
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* @b and @queue
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*
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* Returns: the cryptodev backend common vhost object
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*/
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CryptoDevBackendVhost *
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cryptodev_get_vhost(CryptoDevBackendClient *cc,
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CryptoDevBackend *b,
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uint16_t queue);
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/**
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* cryptodev_vhost_start:
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* @dev: the virtio crypto object
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* @total_queues: the total count of queue
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*
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* Starts the vhost crypto logic
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*
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* Returns: 0 for success, negative for errors
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*/
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int cryptodev_vhost_start(VirtIODevice *dev, int total_queues);
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/**
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* cryptodev_vhost_stop:
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* @dev: the virtio crypto object
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* @total_queues: the total count of queue
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*
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* Stops the vhost crypto logic
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*
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*/
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void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues);
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/**
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* cryptodev_vhost_virtqueue_mask:
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* @dev: the virtio crypto object
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* @queue: the cryptodev backend queue index
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* @idx: the virtqueue index
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* @mask: mask or not (true or false)
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*
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* Mask/unmask events for @idx virtqueue on @dev device
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*
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*/
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void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev,
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int queue,
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int idx, bool mask);
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/**
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* cryptodev_vhost_virtqueue_pending:
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* @dev: the virtio crypto object
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* @queue: the cryptodev backend queue index
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* @idx: the virtqueue index
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*
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* Test and clear event pending status for @idx virtqueue on @dev device.
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* Should be called after unmask to avoid losing events.
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*
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* Returns: true for success, false for errors
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*/
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bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev,
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int queue, int idx);
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#endif /* CRYPTODEV_VHOST_H */
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