include/hw/virtio/virtio-crypto.h

   1 /*
   2  * Virtio crypto Support
   3  *
   4  * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
   5  *
   6  * Authors:
   7  *    Gonglei <arei.gonglei@huawei.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2 or
  10  * (at your option) any later version.  See the COPYING file in the
  11  * top-level directory.
  12  */
  13
  14 #ifndef QEMU_VIRTIO_CRYPTO_H
  15 #define QEMU_VIRTIO_CRYPTO_H
  16
  17 #include "standard-headers/linux/virtio_crypto.h"
  18 #include "hw/virtio/virtio.h"
  19 #include "sysemu/iothread.h"
  20 #include "sysemu/cryptodev.h"
  21 #include "qom/object.h"
  22
  23
  24 #define DEBUG_VIRTIO_CRYPTO 0
  25
  26 #define DPRINTF(fmt, ...) \
  27 do { \
  28     if (DEBUG_VIRTIO_CRYPTO) { \
  29         fprintf(stderr, "virtio_crypto: " fmt, ##__VA_ARGS__); \
  30     } \
  31 } while (0)
  32
  33
  34 #define TYPE_VIRTIO_CRYPTO "virtio-crypto-device"
  35 typedef struct VirtIOCrypto VirtIOCrypto;
  36 DECLARE_INSTANCE_CHECKER(VirtIOCrypto, VIRTIO_CRYPTO,
  37                          TYPE_VIRTIO_CRYPTO)
  38 #define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
  39         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
  40
  41
  42 typedef struct VirtIOCryptoConf {
  43     CryptoDevBackend *cryptodev;
  44
  45     /* Supported service mask */
  46     uint32_t crypto_services;
  47
  48     /* Detailed algorithms mask */
  49     uint32_t cipher_algo_l;
  50     uint32_t cipher_algo_h;
  51     uint32_t hash_algo;
  52     uint32_t mac_algo_l;
  53     uint32_t mac_algo_h;
  54     uint32_t aead_algo;
  55
  56     /* Maximum length of cipher key */
  57     uint32_t max_cipher_key_len;
  58     /* Maximum length of authenticated key */
  59     uint32_t max_auth_key_len;
  60     /* Maximum size of each crypto request's content */
  61     uint64_t max_size;
  62 } VirtIOCryptoConf;
  63
  64 struct VirtIOCrypto;
  65
  66 typedef struct VirtIOCryptoReq {
  67     VirtQueueElement elem;
  68     /* flags of operation, such as type of algorithm */
  69     uint32_t flags;
  70     struct virtio_crypto_inhdr *in;
  71     struct iovec *in_iov; /* Head address of dest iovec */
  72     unsigned int in_num; /* Number of dest iovec */
  73     size_t in_len;
  74     VirtQueue *vq;
  75     struct VirtIOCrypto *vcrypto;
  76     union {
  77         CryptoDevBackendSymOpInfo *sym_op_info;
  78     } u;
  79 } VirtIOCryptoReq;
  80
  81 typedef struct VirtIOCryptoQueue {
  82     VirtQueue *dataq;
  83     QEMUBH *dataq_bh;
  84     struct VirtIOCrypto *vcrypto;
  85 } VirtIOCryptoQueue;
  86
  87 struct VirtIOCrypto {
  88     VirtIODevice parent_obj;
  89
  90     VirtQueue *ctrl_vq;
  91     VirtIOCryptoQueue *vqs;
  92     VirtIOCryptoConf conf;
  93     CryptoDevBackend *cryptodev;
  94
  95     uint32_t max_queues;
  96     uint32_t status;
  97
  98     int multiqueue;
  99     uint32_t curr_queues;
 100     size_t config_size;
 101     uint8_t vhost_started;
 102 };
 103
 104 #endif /* QEMU_VIRTIO_CRYPTO_H */