Introduce the virtio crypto realization, I'll finish the core code in the following patches. The thoughts came from virtio net realization.
For more information see: http://qemu-project.org/Features/VirtioCrypto Signed-off-by: Gonglei <arei.gong...@huawei.com> --- hw/virtio/Makefile.objs | 1 + hw/virtio/virtio-crypto.c | 199 ++++++++++++++++++++++++++++ include/hw/virtio/virtio-crypto.h | 74 +++++++++++ include/standard-headers/linux/virtio_ids.h | 2 +- 4 files changed, 275 insertions(+), 1 deletion(-) create mode 100644 hw/virtio/virtio-crypto.c create mode 100644 include/hw/virtio/virtio-crypto.h diff --git a/hw/virtio/Makefile.objs b/hw/virtio/Makefile.objs index e716308..968f392 100644 --- a/hw/virtio/Makefile.objs +++ b/hw/virtio/Makefile.objs @@ -7,3 +7,4 @@ obj-y += virtio.o virtio-balloon.o obj-$(CONFIG_LINUX) += vhost.o vhost-backend.o vhost-user.o obj-$(CONFIG_VHOST_VSOCK) += vhost-vsock.o +obj-y += virtio-crypto.o diff --git a/hw/virtio/virtio-crypto.c b/hw/virtio/virtio-crypto.c new file mode 100644 index 0000000..e639fb3 --- /dev/null +++ b/hw/virtio/virtio-crypto.c @@ -0,0 +1,199 @@ +/* + * Virtio crypto Support + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Gonglei <arei.gong...@huawei.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ +#include "qemu/osdep.h" +#include "qemu/iov.h" +#include "hw/qdev.h" +#include "qapi/error.h" +#include "qemu/error-report.h" + +#include "hw/virtio/virtio.h" +#include "hw/virtio/virtio-crypto.h" +#include "hw/virtio/virtio-access.h" +#include "standard-headers/linux/virtio_ids.h" + + +static void virtio_crypto_process(VirtIOCrypto *vcrypto) +{ +} + +static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) +{ + +} + +static void virtio_crypto_handle_dataq(VirtIODevice *vdev, VirtQueue *vq) +{ + +} + +static uint64_t virtio_crypto_get_features(VirtIODevice *vdev, + uint64_t features, + Error **errp) +{ + return features; +} + +static void virtio_crypto_set_features(VirtIODevice *vdev, uint64_t features) +{ + +} + +static void virtio_crypto_save(QEMUFile *f, void *opaque) +{ + VirtIODevice *vdev = opaque; + + virtio_save(vdev, f); +} + +static int virtio_crypto_load(QEMUFile *f, void *opaque, int version_id) +{ + VirtIOCrypto *vcrypto = opaque; + int ret; + + if (version_id != 1) { + return -EINVAL; + } + ret = virtio_load(VIRTIO_DEVICE(vcrypto), f, version_id); + if (ret != 0) { + return ret; + } + + /* We may have an element ready but couldn't process it due to a quota + * limit. Make sure to try again after live migration when the quota may + * have been reset. + */ + virtio_crypto_process(vcrypto); + + return 0; +} + +static void virtio_crypto_reset(VirtIODevice *vdev) +{ + VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); + /* multiqueue is disabled by default */ + vcrypto->curr_queues = 1; + if (!vcrypto->cryptodev->ready) { + vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY; + } else { + vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY; + } +} + +static void virtio_crypto_device_realize(DeviceState *dev, Error **errp) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev); + int i; + + vcrypto->cryptodev = vcrypto->conf.cryptodev; + if (vcrypto->cryptodev == NULL) { + error_setg(errp, "'cryptodev' parameter expects a valid object"); + return; + } + + vcrypto->max_queues = MAX(vcrypto->cryptodev->conf.peers.queues, 1); + if (vcrypto->max_queues + 1 > VIRTIO_QUEUE_MAX) { + error_setg(errp, "Invalid number of queues (= %" PRIu16 "), " + "must be a postive integer less than %d.", + vcrypto->max_queues, VIRTIO_QUEUE_MAX - 1); + return; + } + + virtio_init(vdev, "virtio-crypto", VIRTIO_ID_CRYPTO, vcrypto->config_size); + vcrypto->curr_queues = 1; + + for (i = 0; i < vcrypto->max_queues; i++) { + virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq); + } + + vcrypto->ctrl_vq = virtio_add_queue(vdev, 64, virtio_crypto_handle_ctrl); + if (!vcrypto->cryptodev->ready) { + vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY; + } else { + vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY; + } + register_savevm(dev, "virtio-crypto", -1, 1, virtio_crypto_save, + virtio_crypto_load, vcrypto); +} + +static void virtio_crypto_device_unrealize(DeviceState *dev, Error **errp) +{ + VirtIODevice *vdev = VIRTIO_DEVICE(dev); + VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev); + + unregister_savevm(dev, "virtio-crypto", vcrypto); + + virtio_cleanup(vdev); +} + +static Property virtio_crypto_properties[] = { + DEFINE_PROP_END_OF_LIST(), +}; + +static void virtio_crypto_get_config(VirtIODevice *vdev, uint8_t *config) +{ + +} + +static void virtio_crypto_set_config(VirtIODevice *vdev, const uint8_t *config) +{ + +} + +static void virtio_crypto_class_init(ObjectClass *klass, void *data) +{ + DeviceClass *dc = DEVICE_CLASS(klass); + VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); + + dc->props = virtio_crypto_properties; + set_bit(DEVICE_CATEGORY_MISC, dc->categories); + vdc->realize = virtio_crypto_device_realize; + vdc->unrealize = virtio_crypto_device_unrealize; + vdc->get_config = virtio_crypto_get_config; + vdc->set_config = virtio_crypto_set_config; + vdc->get_features = virtio_crypto_get_features; + vdc->set_features = virtio_crypto_set_features; + vdc->reset = virtio_crypto_reset; +} + +static void virtio_crypto_instance_init(Object *obj) +{ + VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(obj); + + /* + * The default config_size is sizeof(struct virtio_crypto_config). + * Can be overriden with virtio_crypto_set_config_size. + */ + vcrypto->config_size = sizeof(struct virtio_crypto_config); + + object_property_add_link(obj, "cryptodev", + TYPE_QCRYPTO_CRYPTODEV_BACKEND, + (Object **)&vcrypto->conf.cryptodev, + qdev_prop_allow_set_link_before_realize, + OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL); +} + +static const TypeInfo virtio_crypto_info = { + .name = TYPE_VIRTIO_CRYPTO, + .parent = TYPE_VIRTIO_DEVICE, + .instance_size = sizeof(VirtIOCrypto), + .instance_init = virtio_crypto_instance_init, + .class_init = virtio_crypto_class_init, +}; + +static void virtio_register_types(void) +{ + type_register_static(&virtio_crypto_info); +} + +type_init(virtio_register_types) diff --git a/include/hw/virtio/virtio-crypto.h b/include/hw/virtio/virtio-crypto.h new file mode 100644 index 0000000..484062c --- /dev/null +++ b/include/hw/virtio/virtio-crypto.h @@ -0,0 +1,74 @@ +/* + * Virtio crypto Support + * + * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD. + * + * Authors: + * Gonglei <arei.gong...@huawei.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * (at your option) any later version. See the COPYING file in the + * top-level directory. + */ + +#ifndef _QEMU_VIRTIO_CRYPTO_H +#define _QEMU_VIRTIO_CRYPTO_H + +#include "standard-headers/linux/virtio_crypto.h" +#include "hw/virtio/virtio.h" +#include "sysemu/iothread.h" +#include "sysemu/cryptodev.h" + + +/* #define DEBUG_VIRTIO_CRYPTO */ + +#ifdef DEBUG_VIRTIO_CRYPTO +#define DPRINTF(fmt, ...) \ +do { printf("virtio_crypto: " fmt , ## __VA_ARGS__); } while (0) +#else +#define DPRINTF(fmt, ...) do { } while (0) +#endif + +#define TYPE_VIRTIO_CRYPTO "virtio-crypto-device" +#define VIRTIO_CRYPTO(obj) \ + OBJECT_CHECK(VirtIOCrypto, (obj), TYPE_VIRTIO_CRYPTO) +#define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \ + OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO) + + +typedef struct VirtIOCryptoConf { + QCryptoCryptoDevBackend *cryptodev; +} VirtIOCryptoConf; + +struct VirtIOCrypto; + +typedef struct VirtIOCryptoReq { + VirtQueueElement elem; + /* flags of operation, such as type of algorithm */ + uint32_t flags; + /* address of in data (Device to Driver) */ + void *idata_hva; + VirtQueue *vq; + struct VirtIOCrypto *vcrypto; + union { + QCryptoCryptoDevBackendSymOpInfo *sym_op_info; + } u; +} VirtIOCryptoReq; + +typedef struct VirtIOCrypto { + VirtIODevice parent_obj; + + VirtQueue *ctrl_vq; + + VirtIOCryptoConf conf; + QCryptoCryptoDevBackend *cryptodev; + + uint32_t max_queues; + uint32_t status; + + int multiqueue; + uint32_t curr_queues; + size_t config_size; +} VirtIOCrypto; + +#endif /* _QEMU_VIRTIO_CRYPTO_H */ diff --git a/include/standard-headers/linux/virtio_ids.h b/include/standard-headers/linux/virtio_ids.h index 3228d58..fe74e42 100644 --- a/include/standard-headers/linux/virtio_ids.h +++ b/include/standard-headers/linux/virtio_ids.h @@ -42,5 +42,5 @@ #define VIRTIO_ID_GPU 16 /* virtio GPU */ #define VIRTIO_ID_INPUT 18 /* virtio input */ #define VIRTIO_ID_VSOCK 19 /* virtio vsock transport */ - +#define VIRTIO_ID_CRYPTO 20 /* virtio crypto */ #endif /* _LINUX_VIRTIO_IDS_H */ -- 1.7.12.4
