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 OBJECT_DECLARE_SIMPLE_TYPE(VirtIOCrypto, VIRTIO_CRYPTO)
36 #define VIRTIO_CRYPTO_GET_PARENT_CLASS(obj) \
37         OBJECT_GET_PARENT_CLASS(obj, TYPE_VIRTIO_CRYPTO)
38 
39 
40 typedef struct VirtIOCryptoConf {
41     CryptoDevBackend *cryptodev;
42 
43     /* Supported service mask */
44     uint32_t crypto_services;
45 
46     /* Detailed algorithms mask */
47     uint32_t cipher_algo_l;
48     uint32_t cipher_algo_h;
49     uint32_t hash_algo;
50     uint32_t mac_algo_l;
51     uint32_t mac_algo_h;
52     uint32_t aead_algo;
53 
54     /* Maximum length of cipher key */
55     uint32_t max_cipher_key_len;
56     /* Maximum length of authenticated key */
57     uint32_t max_auth_key_len;
58     /* Maximum size of each crypto request's content */
59     uint64_t max_size;
60 } VirtIOCryptoConf;
61 
62 struct VirtIOCrypto;
63 
64 typedef struct VirtIOCryptoReq {
65     VirtQueueElement elem;
66     /* flags of operation, such as type of algorithm */
67     uint32_t flags;
68     struct virtio_crypto_inhdr *in;
69     struct iovec *in_iov; /* Head address of dest iovec */
70     unsigned int in_num; /* Number of dest iovec */
71     size_t in_len;
72     VirtQueue *vq;
73     struct VirtIOCrypto *vcrypto;
74     union {
75         CryptoDevBackendSymOpInfo *sym_op_info;
76     } u;
77 } VirtIOCryptoReq;
78 
79 typedef struct VirtIOCryptoQueue {
80     VirtQueue *dataq;
81     QEMUBH *dataq_bh;
82     struct VirtIOCrypto *vcrypto;
83 } VirtIOCryptoQueue;
84 
85 struct VirtIOCrypto {
86     VirtIODevice parent_obj;
87 
88     VirtQueue *ctrl_vq;
89     VirtIOCryptoQueue *vqs;
90     VirtIOCryptoConf conf;
91     CryptoDevBackend *cryptodev;
92 
93     uint32_t max_queues;
94     uint32_t status;
95 
96     int multiqueue;
97     uint32_t curr_queues;
98     size_t config_size;
99     uint8_t vhost_started;
100 };
101 
102 #endif /* QEMU_VIRTIO_CRYPTO_H */
103