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 */ 105