04b9b37edd
Introduces VirtIOCryptoReq structure to store crypto request so that we can easily support asynchronous crypto operation in the future. At present, we only support cipher and algorithm chaining. Signed-off-by: Gonglei <arei.gonglei@huawei.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
96 lines
2.2 KiB
C
96 lines
2.2 KiB
C
/*
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* Virtio crypto Support
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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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*
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* This work is licensed under the terms of the GNU GPL, version 2 or
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* (at your option) any later version. See the COPYING file in the
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* top-level directory.
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*/
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#ifndef _QEMU_VIRTIO_CRYPTO_H
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#define _QEMU_VIRTIO_CRYPTO_H
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#include "standard-headers/linux/virtio_crypto.h"
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#include "hw/virtio/virtio.h"
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#include "sysemu/iothread.h"
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#include "sysemu/cryptodev.h"
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#define DEBUG_VIRTIO_CRYPTO 0
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#define DPRINTF(fmt, ...) \
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do { \
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if (DEBUG_VIRTIO_CRYPTO) { \
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fprintf(stderr, "virtio_crypto: " fmt, ##__VA_ARGS__); \
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} \
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} while (0)
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#define TYPE_VIRTIO_CRYPTO "virtio-crypto-device"
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#define VIRTIO_CRYPTO(obj) \
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OBJECT_CHECK(VirtIOCrypto, (obj), TYPE_VIRTIO_CRYPTO)
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#define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
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OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
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typedef struct VirtIOCryptoConf {
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CryptoDevBackend *cryptodev;
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/* Supported service mask */
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uint32_t crypto_services;
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/* Detailed algorithms mask */
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uint32_t cipher_algo_l;
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uint32_t cipher_algo_h;
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uint32_t hash_algo;
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uint32_t mac_algo_l;
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uint32_t mac_algo_h;
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uint32_t aead_algo;
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/* Maximum length of cipher key */
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uint32_t max_cipher_key_len;
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/* Maximum length of authenticated key */
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uint32_t max_auth_key_len;
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/* Maximum size of each crypto request's content */
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uint64_t max_size;
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} VirtIOCryptoConf;
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struct VirtIOCrypto;
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typedef struct VirtIOCryptoReq {
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VirtQueueElement elem;
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/* flags of operation, such as type of algorithm */
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uint32_t flags;
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struct virtio_crypto_inhdr *in;
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struct iovec *in_iov; /* Head address of dest iovec */
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unsigned int in_num; /* Number of dest iovec */
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size_t in_len;
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VirtQueue *vq;
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struct VirtIOCrypto *vcrypto;
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union {
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CryptoDevBackendSymOpInfo *sym_op_info;
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} u;
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} VirtIOCryptoReq;
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typedef struct VirtIOCrypto {
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VirtIODevice parent_obj;
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VirtQueue *ctrl_vq;
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VirtIOCryptoConf conf;
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CryptoDevBackend *cryptodev;
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uint32_t max_queues;
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uint32_t status;
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int multiqueue;
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uint32_t curr_queues;
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size_t config_size;
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} VirtIOCrypto;
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#endif /* _QEMU_VIRTIO_CRYPTO_H */
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