From 042cea274c5854023e1d18626480190c0d64268e Mon Sep 17 00:00:00 2001 From: Gonglei Date: Thu, 1 Mar 2018 21:46:28 +0800 Subject: cryptodev: add vhost-user as a new cryptodev backend Usage: -chardev socket,id=charcrypto0,path=/path/to/your/socket -object cryptodev-vhost-user,id=cryptodev0,chardev=charcrypto0 -device virtio-crypto-pci,id=crypto0,cryptodev=cryptodev0 Signed-off-by: Gonglei Signed-off-by: Longpeng(Mike) Signed-off-by: Jay Zhou Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- include/sysemu/cryptodev-vhost.h | 154 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 154 insertions(+) create mode 100644 include/sysemu/cryptodev-vhost.h (limited to 'include/sysemu') diff --git a/include/sysemu/cryptodev-vhost.h b/include/sysemu/cryptodev-vhost.h new file mode 100644 index 0000000000..fb26b86977 --- /dev/null +++ b/include/sysemu/cryptodev-vhost.h @@ -0,0 +1,154 @@ +/* + * QEMU Crypto Device Common Vhost Implement + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Gonglei + * Jay Zhou + * + * This library is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2 of the License, or (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with this library; if not, see . + * + */ +#ifndef CRYPTODEV_VHOST_H +#define CRYPTODEV_VHOST_H + +#include "qemu-common.h" +#include "hw/virtio/vhost.h" +#include "hw/virtio/vhost-backend.h" +#include "chardev/char.h" + +#include "sysemu/cryptodev.h" + + +typedef struct CryptoDevBackendVhostOptions { + VhostBackendType backend_type; + void *opaque; + int total_queues; + CryptoDevBackendClient *cc; +} CryptoDevBackendVhostOptions; + +typedef struct CryptoDevBackendVhost { + struct vhost_dev dev; + struct vhost_virtqueue vqs[1]; + int backend; + CryptoDevBackendClient *cc; +} CryptoDevBackendVhost; + +/** + * cryptodev_vhost_get_max_queues: + * @crypto: the cryptodev backend common vhost object + * + * Get the maximum queue number of @crypto. + * + * + * Returns: the maximum queue number + */ +uint64_t +cryptodev_vhost_get_max_queues( + CryptoDevBackendVhost *crypto); + + +/** + * cryptodev_vhost_init: + * @options: the common vhost object's option + * + * Creates a new cryptodev backend common vhost object + * + ** The returned object must be released with + * cryptodev_vhost_cleanup() when no + * longer required + * + * Returns: the cryptodev backend common vhost object + */ +struct CryptoDevBackendVhost * +cryptodev_vhost_init( + CryptoDevBackendVhostOptions *options); + +/** + * cryptodev_vhost_cleanup: + * @crypto: the cryptodev backend common vhost object + * + * Clean the resouce associated with @crypto that realizaed + * by cryptodev_vhost_init() + * + */ +void cryptodev_vhost_cleanup( + CryptoDevBackendVhost *crypto); + +/** + * cryptodev_get_vhost: + * @cc: the client object for each queue + * @b: the cryptodev backend common vhost object + * @queue: the cryptodev backend queue index + * + * Gets a new cryptodev backend common vhost object based on + * @b and @queue + * + * Returns: the cryptodev backend common vhost object + */ +CryptoDevBackendVhost * +cryptodev_get_vhost(CryptoDevBackendClient *cc, + CryptoDevBackend *b, + uint16_t queue); +/** + * cryptodev_vhost_start: + * @dev: the virtio crypto object + * @total_queues: the total count of queue + * + * Starts the vhost crypto logic + * + * Returns: 0 for success, negative for errors + */ +int cryptodev_vhost_start(VirtIODevice *dev, int total_queues); + +/** + * cryptodev_vhost_stop: + * @dev: the virtio crypto object + * @total_queues: the total count of queue + * + * Stops the vhost crypto logic + * + */ +void cryptodev_vhost_stop(VirtIODevice *dev, int total_queues); + +/** + * cryptodev_vhost_virtqueue_mask: + * @dev: the virtio crypto object + * @queue: the cryptodev backend queue index + * @idx: the virtqueue index + * @mask: mask or not (true or false) + * + * Mask/unmask events for @idx virtqueue on @dev device + * + */ +void cryptodev_vhost_virtqueue_mask(VirtIODevice *dev, + int queue, + int idx, bool mask); + +/** + * cryptodev_vhost_virtqueue_pending: + * @dev: the virtio crypto object + * @queue: the cryptodev backend queue index + * @idx: the virtqueue index + * + * Test and clear event pending status for @idx virtqueue on @dev device. + * Should be called after unmask to avoid losing events. + * + * Returns: true for success, false for errors + */ +bool cryptodev_vhost_virtqueue_pending(VirtIODevice *dev, + int queue, int idx); + +#endif /* CRYPTODEV_VHOST_H */ -- cgit v1.2.3