2 * Virtio crypto Support
4 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
7 * Gonglei <arei.gonglei@huawei.com>
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.
14 #include "qemu/osdep.h"
16 #include "qemu/main-loop.h"
17 #include "qemu/module.h"
18 #include "qapi/error.h"
19 #include "qemu/error-report.h"
21 #include "hw/virtio/virtio.h"
22 #include "hw/virtio/virtio-crypto.h"
23 #include "hw/qdev-properties.h"
24 #include "standard-headers/linux/virtio_ids.h"
25 #include "sysemu/cryptodev-vhost.h"
27 #define VIRTIO_CRYPTO_VM_VERSION 1
29 typedef struct VirtIOCryptoSessionReq
{
32 VirtQueueElement
*elem
;
33 CryptoDevBackendSessionInfo info
;
34 CryptoDevCompletionFunc cb
;
35 } VirtIOCryptoSessionReq
;
37 static void virtio_crypto_free_create_session_req(VirtIOCryptoSessionReq
*sreq
)
39 switch (sreq
->info
.op_code
) {
40 case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION
:
41 g_free(sreq
->info
.u
.sym_sess_info
.cipher_key
);
42 g_free(sreq
->info
.u
.sym_sess_info
.auth_key
);
45 case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION
:
46 g_free(sreq
->info
.u
.asym_sess_info
.key
);
49 case VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION
:
50 case VIRTIO_CRYPTO_HASH_DESTROY_SESSION
:
51 case VIRTIO_CRYPTO_MAC_DESTROY_SESSION
:
52 case VIRTIO_CRYPTO_AEAD_DESTROY_SESSION
:
53 case VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION
:
57 error_report("Unknown opcode: %u", sreq
->info
.op_code
);
63 * Transfer virtqueue index to crypto queue index.
64 * The control virtqueue is after the data virtqueues
65 * so the input value doesn't need to be adjusted
67 static inline int virtio_crypto_vq2q(int queue_index
)
73 virtio_crypto_cipher_session_helper(VirtIODevice
*vdev
,
74 CryptoDevBackendSymSessionInfo
*info
,
75 struct virtio_crypto_cipher_session_para
*cipher_para
,
76 struct iovec
**iov
, unsigned int *out_num
)
78 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
79 unsigned int num
= *out_num
;
81 info
->cipher_alg
= ldl_le_p(&cipher_para
->algo
);
82 info
->key_len
= ldl_le_p(&cipher_para
->keylen
);
83 info
->direction
= ldl_le_p(&cipher_para
->op
);
84 DPRINTF("cipher_alg=%" PRIu32
", info->direction=%" PRIu32
"\n",
85 info
->cipher_alg
, info
->direction
);
87 if (info
->key_len
> vcrypto
->conf
.max_cipher_key_len
) {
88 error_report("virtio-crypto length of cipher key is too big: %u",
90 return -VIRTIO_CRYPTO_ERR
;
93 if (info
->key_len
> 0) {
95 DPRINTF("keylen=%" PRIu32
"\n", info
->key_len
);
97 info
->cipher_key
= g_malloc(info
->key_len
);
98 s
= iov_to_buf(*iov
, num
, 0, info
->cipher_key
, info
->key_len
);
99 if (unlikely(s
!= info
->key_len
)) {
100 virtio_error(vdev
, "virtio-crypto cipher key incorrect");
103 iov_discard_front(iov
, &num
, info
->key_len
);
111 virtio_crypto_create_sym_session(VirtIOCrypto
*vcrypto
,
112 struct virtio_crypto_sym_create_session_req
*sess_req
,
115 struct iovec
*iov
, unsigned int out_num
,
116 VirtIOCryptoSessionReq
*sreq
)
118 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
119 CryptoDevBackendSymSessionInfo
*sym_info
= &sreq
->info
.u
.sym_sess_info
;
124 op_type
= ldl_le_p(&sess_req
->op_type
);
125 sreq
->info
.op_code
= opcode
;
127 sym_info
= &sreq
->info
.u
.sym_sess_info
;
128 sym_info
->op_type
= op_type
;
130 if (op_type
== VIRTIO_CRYPTO_SYM_OP_CIPHER
) {
131 ret
= virtio_crypto_cipher_session_helper(vdev
, sym_info
,
132 &sess_req
->u
.cipher
.para
,
137 } else if (op_type
== VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING
) {
140 ret
= virtio_crypto_cipher_session_helper(vdev
, sym_info
,
141 &sess_req
->u
.chain
.para
.cipher_param
,
147 sym_info
->alg_chain_order
= ldl_le_p(
148 &sess_req
->u
.chain
.para
.alg_chain_order
);
149 sym_info
->add_len
= ldl_le_p(&sess_req
->u
.chain
.para
.aad_len
);
150 sym_info
->hash_mode
= ldl_le_p(&sess_req
->u
.chain
.para
.hash_mode
);
151 if (sym_info
->hash_mode
== VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH
) {
153 ldl_le_p(&sess_req
->u
.chain
.para
.u
.mac_param
.algo
);
154 sym_info
->auth_key_len
= ldl_le_p(
155 &sess_req
->u
.chain
.para
.u
.mac_param
.auth_key_len
);
156 sym_info
->hash_result_len
= ldl_le_p(
157 &sess_req
->u
.chain
.para
.u
.mac_param
.hash_result_len
);
158 if (sym_info
->auth_key_len
> vcrypto
->conf
.max_auth_key_len
) {
159 error_report("virtio-crypto length of auth key is too big: %u",
160 sym_info
->auth_key_len
);
161 return -VIRTIO_CRYPTO_ERR
;
164 if (sym_info
->auth_key_len
> 0) {
165 sym_info
->auth_key
= g_malloc(sym_info
->auth_key_len
);
166 s
= iov_to_buf(iov
, out_num
, 0, sym_info
->auth_key
,
167 sym_info
->auth_key_len
);
168 if (unlikely(s
!= sym_info
->auth_key_len
)) {
170 "virtio-crypto authenticated key incorrect");
173 iov_discard_front(&iov
, &out_num
, sym_info
->auth_key_len
);
175 } else if (sym_info
->hash_mode
== VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN
) {
176 sym_info
->hash_alg
= ldl_le_p(
177 &sess_req
->u
.chain
.para
.u
.hash_param
.algo
);
178 sym_info
->hash_result_len
= ldl_le_p(
179 &sess_req
->u
.chain
.para
.u
.hash_param
.hash_result_len
);
181 /* VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */
182 error_report("unsupported hash mode");
183 return -VIRTIO_CRYPTO_NOTSUPP
;
186 /* VIRTIO_CRYPTO_SYM_OP_NONE */
187 error_report("unsupported cipher op_type: VIRTIO_CRYPTO_SYM_OP_NONE");
188 return -VIRTIO_CRYPTO_NOTSUPP
;
191 queue_index
= virtio_crypto_vq2q(queue_id
);
192 return cryptodev_backend_create_session(vcrypto
->cryptodev
, &sreq
->info
,
193 queue_index
, sreq
->cb
, sreq
);
197 virtio_crypto_create_asym_session(VirtIOCrypto
*vcrypto
,
198 struct virtio_crypto_akcipher_create_session_req
*sess_req
,
199 uint32_t queue_id
, uint32_t opcode
,
200 struct iovec
*iov
, unsigned int out_num
,
201 VirtIOCryptoSessionReq
*sreq
)
203 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
204 CryptoDevBackendAsymSessionInfo
*asym_info
= &sreq
->info
.u
.asym_sess_info
;
206 uint32_t algo
, keytype
, keylen
;
208 sreq
->info
.op_code
= opcode
;
209 algo
= ldl_le_p(&sess_req
->para
.algo
);
210 keytype
= ldl_le_p(&sess_req
->para
.keytype
);
211 keylen
= ldl_le_p(&sess_req
->para
.keylen
);
213 if ((keytype
!= VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PUBLIC
)
214 && (keytype
!= VIRTIO_CRYPTO_AKCIPHER_KEY_TYPE_PRIVATE
)) {
215 error_report("unsupported asym keytype: %d", keytype
);
216 return -VIRTIO_CRYPTO_NOTSUPP
;
220 asym_info
->key
= g_malloc(keylen
);
221 if (iov_to_buf(iov
, out_num
, 0, asym_info
->key
, keylen
) != keylen
) {
222 virtio_error(vdev
, "virtio-crypto asym key incorrect");
225 iov_discard_front(&iov
, &out_num
, keylen
);
228 asym_info
= &sreq
->info
.u
.asym_sess_info
;
229 asym_info
->algo
= algo
;
230 asym_info
->keytype
= keytype
;
231 asym_info
->keylen
= keylen
;
232 switch (asym_info
->algo
) {
233 case VIRTIO_CRYPTO_AKCIPHER_RSA
:
234 asym_info
->u
.rsa
.padding_algo
=
235 ldl_le_p(&sess_req
->para
.u
.rsa
.padding_algo
);
236 asym_info
->u
.rsa
.hash_algo
=
237 ldl_le_p(&sess_req
->para
.u
.rsa
.hash_algo
);
240 /* TODO DSA&ECDSA handling */
243 return -VIRTIO_CRYPTO_ERR
;
246 queue_index
= virtio_crypto_vq2q(queue_id
);
247 return cryptodev_backend_create_session(vcrypto
->cryptodev
, &sreq
->info
,
248 queue_index
, sreq
->cb
, sreq
);
252 virtio_crypto_handle_close_session(VirtIOCrypto
*vcrypto
,
253 struct virtio_crypto_destroy_session_req
*close_sess_req
,
255 VirtIOCryptoSessionReq
*sreq
)
259 session_id
= ldq_le_p(&close_sess_req
->session_id
);
260 DPRINTF("close session, id=%" PRIu64
"\n", session_id
);
262 return cryptodev_backend_close_session(
263 vcrypto
->cryptodev
, session_id
, queue_id
, sreq
->cb
, sreq
);
266 static void virtio_crypto_create_session_completion(void *opaque
, int ret
)
268 VirtIOCryptoSessionReq
*sreq
= (VirtIOCryptoSessionReq
*)opaque
;
269 VirtQueue
*vq
= sreq
->vq
;
270 VirtQueueElement
*elem
= sreq
->elem
;
271 VirtIODevice
*vdev
= sreq
->vdev
;
272 struct virtio_crypto_session_input input
;
273 struct iovec
*in_iov
= elem
->in_sg
;
274 unsigned in_num
= elem
->in_num
;
277 memset(&input
, 0, sizeof(input
));
278 /* Serious errors, need to reset virtio crypto device */
279 if (ret
== -EFAULT
) {
280 virtqueue_detach_element(vq
, elem
, 0);
282 } else if (ret
== -VIRTIO_CRYPTO_NOTSUPP
) {
283 stl_le_p(&input
.status
, VIRTIO_CRYPTO_NOTSUPP
);
284 } else if (ret
== -VIRTIO_CRYPTO_KEY_REJECTED
) {
285 stl_le_p(&input
.status
, VIRTIO_CRYPTO_KEY_REJECTED
);
286 } else if (ret
!= VIRTIO_CRYPTO_OK
) {
287 stl_le_p(&input
.status
, VIRTIO_CRYPTO_ERR
);
289 /* Set the session id */
290 stq_le_p(&input
.session_id
, sreq
->info
.session_id
);
291 stl_le_p(&input
.status
, VIRTIO_CRYPTO_OK
);
294 s
= iov_from_buf(in_iov
, in_num
, 0, &input
, sizeof(input
));
295 if (unlikely(s
!= sizeof(input
))) {
296 virtio_error(vdev
, "virtio-crypto input incorrect");
297 virtqueue_detach_element(vq
, elem
, 0);
300 virtqueue_push(vq
, elem
, sizeof(input
));
301 virtio_notify(vdev
, vq
);
305 virtio_crypto_free_create_session_req(sreq
);
308 static void virtio_crypto_destroy_session_completion(void *opaque
, int ret
)
310 VirtIOCryptoSessionReq
*sreq
= (VirtIOCryptoSessionReq
*)opaque
;
311 VirtQueue
*vq
= sreq
->vq
;
312 VirtQueueElement
*elem
= sreq
->elem
;
313 VirtIODevice
*vdev
= sreq
->vdev
;
314 struct iovec
*in_iov
= elem
->in_sg
;
315 unsigned in_num
= elem
->in_num
;
320 status
= VIRTIO_CRYPTO_ERR
;
322 status
= VIRTIO_CRYPTO_OK
;
324 s
= iov_from_buf(in_iov
, in_num
, 0, &status
, sizeof(status
));
325 if (unlikely(s
!= sizeof(status
))) {
326 virtio_error(vdev
, "virtio-crypto status incorrect");
327 virtqueue_detach_element(vq
, elem
, 0);
330 virtqueue_push(vq
, elem
, sizeof(status
));
331 virtio_notify(vdev
, vq
);
338 static void virtio_crypto_handle_ctrl(VirtIODevice
*vdev
, VirtQueue
*vq
)
340 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
341 struct virtio_crypto_op_ctrl_req ctrl
;
342 VirtQueueElement
*elem
;
343 VirtIOCryptoSessionReq
*sreq
;
348 struct virtio_crypto_session_input input
;
351 struct iovec
*out_iov
;
352 struct iovec
*in_iov
;
355 g_autofree
struct iovec
*out_iov_copy
= NULL
;
357 elem
= virtqueue_pop(vq
, sizeof(VirtQueueElement
));
361 if (elem
->out_num
< 1 || elem
->in_num
< 1) {
362 virtio_error(vdev
, "virtio-crypto ctrl missing headers");
363 virtqueue_detach_element(vq
, elem
, 0);
368 out_num
= elem
->out_num
;
369 out_iov_copy
= g_memdup2(elem
->out_sg
, sizeof(out_iov
[0]) * out_num
);
370 out_iov
= out_iov_copy
;
372 in_num
= elem
->in_num
;
373 in_iov
= elem
->in_sg
;
375 if (unlikely(iov_to_buf(out_iov
, out_num
, 0, &ctrl
, sizeof(ctrl
))
377 virtio_error(vdev
, "virtio-crypto request ctrl_hdr too short");
378 virtqueue_detach_element(vq
, elem
, 0);
382 iov_discard_front(&out_iov
, &out_num
, sizeof(ctrl
));
384 opcode
= ldl_le_p(&ctrl
.header
.opcode
);
385 queue_id
= ldl_le_p(&ctrl
.header
.queue_id
);
387 sreq
= g_new0(VirtIOCryptoSessionReq
, 1);
393 case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION
:
394 sreq
->cb
= virtio_crypto_create_session_completion
;
395 ret
= virtio_crypto_create_sym_session(vcrypto
,
396 &ctrl
.u
.sym_create_session
,
401 virtio_crypto_create_session_completion(sreq
, ret
);
405 case VIRTIO_CRYPTO_AKCIPHER_CREATE_SESSION
:
406 sreq
->cb
= virtio_crypto_create_session_completion
;
407 ret
= virtio_crypto_create_asym_session(vcrypto
,
408 &ctrl
.u
.akcipher_create_session
,
413 virtio_crypto_create_session_completion(sreq
, ret
);
417 case VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION
:
418 case VIRTIO_CRYPTO_HASH_DESTROY_SESSION
:
419 case VIRTIO_CRYPTO_MAC_DESTROY_SESSION
:
420 case VIRTIO_CRYPTO_AEAD_DESTROY_SESSION
:
421 case VIRTIO_CRYPTO_AKCIPHER_DESTROY_SESSION
:
422 sreq
->cb
= virtio_crypto_destroy_session_completion
;
423 ret
= virtio_crypto_handle_close_session(vcrypto
,
424 &ctrl
.u
.destroy_session
, queue_id
,
427 virtio_crypto_destroy_session_completion(sreq
, ret
);
431 case VIRTIO_CRYPTO_HASH_CREATE_SESSION
:
432 case VIRTIO_CRYPTO_MAC_CREATE_SESSION
:
433 case VIRTIO_CRYPTO_AEAD_CREATE_SESSION
:
435 memset(&input
, 0, sizeof(input
));
436 error_report("virtio-crypto unsupported ctrl opcode: %d", opcode
);
437 stl_le_p(&input
.status
, VIRTIO_CRYPTO_NOTSUPP
);
438 s
= iov_from_buf(in_iov
, in_num
, 0, &input
, sizeof(input
));
439 if (unlikely(s
!= sizeof(input
))) {
440 virtio_error(vdev
, "virtio-crypto input incorrect");
441 virtqueue_detach_element(vq
, elem
, 0);
443 virtqueue_push(vq
, elem
, sizeof(input
));
444 virtio_notify(vdev
, vq
);
450 } /* end switch case */
455 static void virtio_crypto_init_request(VirtIOCrypto
*vcrypto
, VirtQueue
*vq
,
456 VirtIOCryptoReq
*req
)
458 req
->vcrypto
= vcrypto
;
464 req
->flags
= QCRYPTODEV_BACKEND_ALGO_TYPE__MAX
;
465 memset(&req
->op_info
, 0x00, sizeof(req
->op_info
));
468 static void virtio_crypto_free_request(VirtIOCryptoReq
*req
)
474 if (req
->flags
== QCRYPTODEV_BACKEND_ALGO_TYPE_SYM
) {
476 CryptoDevBackendSymOpInfo
*op_info
= req
->op_info
.u
.sym_op_info
;
479 max_len
= op_info
->iv_len
+
483 op_info
->digest_result_len
;
485 /* Zeroize and free request data structure */
486 memset(op_info
, 0, sizeof(*op_info
) + max_len
);
489 } else if (req
->flags
== QCRYPTODEV_BACKEND_ALGO_TYPE_ASYM
) {
490 CryptoDevBackendAsymOpInfo
*op_info
= req
->op_info
.u
.asym_op_info
;
492 g_free(op_info
->src
);
493 g_free(op_info
->dst
);
494 memset(op_info
, 0, sizeof(*op_info
));
504 virtio_crypto_sym_input_data_helper(VirtIODevice
*vdev
,
505 VirtIOCryptoReq
*req
,
507 CryptoDevBackendSymOpInfo
*sym_op_info
)
510 struct iovec
*in_iov
= req
->in_iov
;
512 if (status
!= VIRTIO_CRYPTO_OK
) {
516 len
= sym_op_info
->src_len
;
517 /* Save the cipher result */
518 s
= iov_from_buf(in_iov
, req
->in_num
, 0, sym_op_info
->dst
, len
);
520 virtio_error(vdev
, "virtio-crypto dest data incorrect");
524 iov_discard_front(&in_iov
, &req
->in_num
, len
);
526 if (sym_op_info
->op_type
==
527 VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING
) {
528 /* Save the digest result */
529 s
= iov_from_buf(in_iov
, req
->in_num
, 0,
530 sym_op_info
->digest_result
,
531 sym_op_info
->digest_result_len
);
532 if (s
!= sym_op_info
->digest_result_len
) {
533 virtio_error(vdev
, "virtio-crypto digest result incorrect");
539 virtio_crypto_akcipher_input_data_helper(VirtIODevice
*vdev
,
540 VirtIOCryptoReq
*req
, int32_t status
,
541 CryptoDevBackendAsymOpInfo
*asym_op_info
)
544 struct iovec
*in_iov
= req
->in_iov
;
546 if (status
!= VIRTIO_CRYPTO_OK
) {
550 len
= asym_op_info
->dst_len
;
555 s
= iov_from_buf(in_iov
, req
->in_num
, 0, asym_op_info
->dst
, len
);
557 virtio_error(vdev
, "virtio-crypto asym dest data incorrect");
561 iov_discard_front(&in_iov
, &req
->in_num
, len
);
563 /* For akcipher, dst_len may be changed after operation */
564 req
->in_len
= sizeof(struct virtio_crypto_inhdr
) + asym_op_info
->dst_len
;
567 static void virtio_crypto_req_complete(void *opaque
, int ret
)
569 VirtIOCryptoReq
*req
= (VirtIOCryptoReq
*)opaque
;
570 VirtIOCrypto
*vcrypto
= req
->vcrypto
;
571 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
572 uint8_t status
= -ret
;
574 if (req
->flags
== QCRYPTODEV_BACKEND_ALGO_TYPE_SYM
) {
575 virtio_crypto_sym_input_data_helper(vdev
, req
, status
,
576 req
->op_info
.u
.sym_op_info
);
577 } else if (req
->flags
== QCRYPTODEV_BACKEND_ALGO_TYPE_ASYM
) {
578 virtio_crypto_akcipher_input_data_helper(vdev
, req
, status
,
579 req
->op_info
.u
.asym_op_info
);
581 stb_p(&req
->in
->status
, status
);
582 virtqueue_push(req
->vq
, &req
->elem
, req
->in_len
);
583 virtio_notify(vdev
, req
->vq
);
584 virtio_crypto_free_request(req
);
587 static VirtIOCryptoReq
*
588 virtio_crypto_get_request(VirtIOCrypto
*s
, VirtQueue
*vq
)
590 VirtIOCryptoReq
*req
= virtqueue_pop(vq
, sizeof(VirtIOCryptoReq
));
593 virtio_crypto_init_request(s
, vq
, req
);
598 static CryptoDevBackendSymOpInfo
*
599 virtio_crypto_sym_op_helper(VirtIODevice
*vdev
,
600 struct virtio_crypto_cipher_para
*cipher_para
,
601 struct virtio_crypto_alg_chain_data_para
*alg_chain_para
,
602 struct iovec
*iov
, unsigned int out_num
)
604 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
605 CryptoDevBackendSymOpInfo
*op_info
;
606 uint32_t src_len
= 0, dst_len
= 0;
608 uint32_t aad_len
= 0, hash_result_len
= 0;
609 uint32_t hash_start_src_offset
= 0, len_to_hash
= 0;
610 uint32_t cipher_start_src_offset
= 0, len_to_cipher
= 0;
612 uint64_t max_len
, curr_size
= 0;
617 iv_len
= ldl_le_p(&cipher_para
->iv_len
);
618 src_len
= ldl_le_p(&cipher_para
->src_data_len
);
619 dst_len
= ldl_le_p(&cipher_para
->dst_data_len
);
620 } else if (alg_chain_para
) { /* Algorithm chain */
621 iv_len
= ldl_le_p(&alg_chain_para
->iv_len
);
622 src_len
= ldl_le_p(&alg_chain_para
->src_data_len
);
623 dst_len
= ldl_le_p(&alg_chain_para
->dst_data_len
);
625 aad_len
= ldl_le_p(&alg_chain_para
->aad_len
);
626 hash_result_len
= ldl_le_p(&alg_chain_para
->hash_result_len
);
627 hash_start_src_offset
= ldl_le_p(
628 &alg_chain_para
->hash_start_src_offset
);
629 cipher_start_src_offset
= ldl_le_p(
630 &alg_chain_para
->cipher_start_src_offset
);
631 len_to_cipher
= ldl_le_p(&alg_chain_para
->len_to_cipher
);
632 len_to_hash
= ldl_le_p(&alg_chain_para
->len_to_hash
);
637 if (unlikely(src_len
!= dst_len
)) {
638 virtio_error(vdev
, "sym request src len is different from dst len");
642 max_len
= (uint64_t)iv_len
+ aad_len
+ src_len
+ dst_len
+ hash_result_len
;
643 if (unlikely(max_len
> vcrypto
->conf
.max_size
)) {
644 virtio_error(vdev
, "virtio-crypto too big length");
648 op_info
= g_malloc0(sizeof(CryptoDevBackendSymOpInfo
) + max_len
);
649 op_info
->iv_len
= iv_len
;
650 op_info
->src_len
= src_len
;
651 op_info
->dst_len
= dst_len
;
652 op_info
->aad_len
= aad_len
;
653 op_info
->digest_result_len
= hash_result_len
;
654 op_info
->hash_start_src_offset
= hash_start_src_offset
;
655 op_info
->len_to_hash
= len_to_hash
;
656 op_info
->cipher_start_src_offset
= cipher_start_src_offset
;
657 op_info
->len_to_cipher
= len_to_cipher
;
658 /* Handle the initialization vector */
659 if (op_info
->iv_len
> 0) {
660 DPRINTF("iv_len=%" PRIu32
"\n", op_info
->iv_len
);
661 op_info
->iv
= op_info
->data
+ curr_size
;
663 s
= iov_to_buf(iov
, out_num
, 0, op_info
->iv
, op_info
->iv_len
);
664 if (unlikely(s
!= op_info
->iv_len
)) {
665 virtio_error(vdev
, "virtio-crypto iv incorrect");
668 iov_discard_front(&iov
, &out_num
, op_info
->iv_len
);
669 curr_size
+= op_info
->iv_len
;
672 /* Handle additional authentication data if exists */
673 if (op_info
->aad_len
> 0) {
674 DPRINTF("aad_len=%" PRIu32
"\n", op_info
->aad_len
);
675 op_info
->aad_data
= op_info
->data
+ curr_size
;
677 s
= iov_to_buf(iov
, out_num
, 0, op_info
->aad_data
, op_info
->aad_len
);
678 if (unlikely(s
!= op_info
->aad_len
)) {
679 virtio_error(vdev
, "virtio-crypto additional auth data incorrect");
682 iov_discard_front(&iov
, &out_num
, op_info
->aad_len
);
684 curr_size
+= op_info
->aad_len
;
687 /* Handle the source data */
688 if (op_info
->src_len
> 0) {
689 DPRINTF("src_len=%" PRIu32
"\n", op_info
->src_len
);
690 op_info
->src
= op_info
->data
+ curr_size
;
692 s
= iov_to_buf(iov
, out_num
, 0, op_info
->src
, op_info
->src_len
);
693 if (unlikely(s
!= op_info
->src_len
)) {
694 virtio_error(vdev
, "virtio-crypto source data incorrect");
697 iov_discard_front(&iov
, &out_num
, op_info
->src_len
);
699 curr_size
+= op_info
->src_len
;
702 /* Handle the destination data */
703 op_info
->dst
= op_info
->data
+ curr_size
;
704 curr_size
+= op_info
->dst_len
;
706 DPRINTF("dst_len=%" PRIu32
"\n", op_info
->dst_len
);
708 /* Handle the hash digest result */
709 if (hash_result_len
> 0) {
710 DPRINTF("hash_result_len=%" PRIu32
"\n", hash_result_len
);
711 op_info
->digest_result
= op_info
->data
+ curr_size
;
722 virtio_crypto_handle_sym_req(VirtIOCrypto
*vcrypto
,
723 struct virtio_crypto_sym_data_req
*req
,
724 CryptoDevBackendOpInfo
*op_info
,
725 struct iovec
*iov
, unsigned int out_num
)
727 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
728 CryptoDevBackendSymOpInfo
*sym_op_info
;
731 op_type
= ldl_le_p(&req
->op_type
);
732 if (op_type
== VIRTIO_CRYPTO_SYM_OP_CIPHER
) {
733 sym_op_info
= virtio_crypto_sym_op_helper(vdev
, &req
->u
.cipher
.para
,
738 } else if (op_type
== VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING
) {
739 sym_op_info
= virtio_crypto_sym_op_helper(vdev
, NULL
,
746 /* VIRTIO_CRYPTO_SYM_OP_NONE */
747 error_report("virtio-crypto unsupported cipher type");
748 return -VIRTIO_CRYPTO_NOTSUPP
;
751 sym_op_info
->op_type
= op_type
;
752 op_info
->u
.sym_op_info
= sym_op_info
;
758 virtio_crypto_handle_asym_req(VirtIOCrypto
*vcrypto
,
759 struct virtio_crypto_akcipher_data_req
*req
,
760 CryptoDevBackendOpInfo
*op_info
,
761 struct iovec
*iov
, unsigned int out_num
)
763 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
764 CryptoDevBackendAsymOpInfo
*asym_op_info
;
771 asym_op_info
= g_new0(CryptoDevBackendAsymOpInfo
, 1);
772 src_len
= ldl_le_p(&req
->para
.src_data_len
);
773 dst_len
= ldl_le_p(&req
->para
.dst_data_len
);
776 src
= g_malloc0(src_len
);
777 len
= iov_to_buf(iov
, out_num
, 0, src
, src_len
);
778 if (unlikely(len
!= src_len
)) {
779 virtio_error(vdev
, "virtio-crypto asym src data incorrect"
780 "expected %u, actual %u", src_len
, len
);
784 iov_discard_front(&iov
, &out_num
, src_len
);
788 dst
= g_malloc0(dst_len
);
790 if (op_info
->op_code
== VIRTIO_CRYPTO_AKCIPHER_VERIFY
) {
791 len
= iov_to_buf(iov
, out_num
, 0, dst
, dst_len
);
792 if (unlikely(len
!= dst_len
)) {
793 virtio_error(vdev
, "virtio-crypto asym dst data incorrect"
794 "expected %u, actual %u", dst_len
, len
);
798 iov_discard_front(&iov
, &out_num
, dst_len
);
802 asym_op_info
->src_len
= src_len
;
803 asym_op_info
->dst_len
= dst_len
;
804 asym_op_info
->src
= src
;
805 asym_op_info
->dst
= dst
;
806 op_info
->u
.asym_op_info
= asym_op_info
;
811 g_free(asym_op_info
);
819 virtio_crypto_handle_request(VirtIOCryptoReq
*request
)
821 VirtIOCrypto
*vcrypto
= request
->vcrypto
;
822 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
823 VirtQueueElement
*elem
= &request
->elem
;
824 int queue_index
= virtio_crypto_vq2q(virtio_get_queue_index(request
->vq
));
825 struct virtio_crypto_op_data_req req
;
827 g_autofree
struct iovec
*in_iov_copy
= NULL
;
828 g_autofree
struct iovec
*out_iov_copy
= NULL
;
829 struct iovec
*in_iov
;
830 struct iovec
*out_iov
;
834 CryptoDevBackendOpInfo
*op_info
= &request
->op_info
;
836 if (elem
->out_num
< 1 || elem
->in_num
< 1) {
837 virtio_error(vdev
, "virtio-crypto dataq missing headers");
841 out_num
= elem
->out_num
;
842 out_iov_copy
= g_memdup2(elem
->out_sg
, sizeof(out_iov
[0]) * out_num
);
843 out_iov
= out_iov_copy
;
845 in_num
= elem
->in_num
;
846 in_iov_copy
= g_memdup2(elem
->in_sg
, sizeof(in_iov
[0]) * in_num
);
847 in_iov
= in_iov_copy
;
849 if (unlikely(iov_to_buf(out_iov
, out_num
, 0, &req
, sizeof(req
))
851 virtio_error(vdev
, "virtio-crypto request outhdr too short");
854 iov_discard_front(&out_iov
, &out_num
, sizeof(req
));
856 if (in_iov
[in_num
- 1].iov_len
<
857 sizeof(struct virtio_crypto_inhdr
)) {
858 virtio_error(vdev
, "virtio-crypto request inhdr too short");
861 /* We always touch the last byte, so just see how big in_iov is. */
862 request
->in_len
= iov_size(in_iov
, in_num
);
863 request
->in
= (void *)in_iov
[in_num
- 1].iov_base
864 + in_iov
[in_num
- 1].iov_len
865 - sizeof(struct virtio_crypto_inhdr
);
866 iov_discard_back(in_iov
, &in_num
, sizeof(struct virtio_crypto_inhdr
));
869 * The length of operation result, including dest_data
870 * and digest_result if exists.
872 request
->in_num
= in_num
;
873 request
->in_iov
= in_iov
;
874 /* now, we free the in_iov_copy inside virtio_crypto_free_request */
877 opcode
= ldl_le_p(&req
.header
.opcode
);
878 op_info
->session_id
= ldq_le_p(&req
.header
.session_id
);
879 op_info
->op_code
= opcode
;
880 op_info
->queue_index
= queue_index
;
881 op_info
->cb
= virtio_crypto_req_complete
;
882 op_info
->opaque
= request
;
885 case VIRTIO_CRYPTO_CIPHER_ENCRYPT
:
886 case VIRTIO_CRYPTO_CIPHER_DECRYPT
:
887 op_info
->algtype
= request
->flags
= QCRYPTODEV_BACKEND_ALGO_TYPE_SYM
;
888 ret
= virtio_crypto_handle_sym_req(vcrypto
,
889 &req
.u
.sym_req
, op_info
,
893 case VIRTIO_CRYPTO_AKCIPHER_ENCRYPT
:
894 case VIRTIO_CRYPTO_AKCIPHER_DECRYPT
:
895 case VIRTIO_CRYPTO_AKCIPHER_SIGN
:
896 case VIRTIO_CRYPTO_AKCIPHER_VERIFY
:
897 op_info
->algtype
= request
->flags
= QCRYPTODEV_BACKEND_ALGO_TYPE_ASYM
;
898 ret
= virtio_crypto_handle_asym_req(vcrypto
,
899 &req
.u
.akcipher_req
, op_info
,
903 /* Serious errors, need to reset virtio crypto device */
904 if (ret
== -EFAULT
) {
906 } else if (ret
== -VIRTIO_CRYPTO_NOTSUPP
) {
907 virtio_crypto_req_complete(request
, -VIRTIO_CRYPTO_NOTSUPP
);
909 ret
= cryptodev_backend_crypto_operation(vcrypto
->cryptodev
,
912 virtio_crypto_req_complete(request
, ret
);
917 case VIRTIO_CRYPTO_HASH
:
918 case VIRTIO_CRYPTO_MAC
:
919 case VIRTIO_CRYPTO_AEAD_ENCRYPT
:
920 case VIRTIO_CRYPTO_AEAD_DECRYPT
:
922 error_report("virtio-crypto unsupported dataq opcode: %u",
924 virtio_crypto_req_complete(request
, -VIRTIO_CRYPTO_NOTSUPP
);
930 static void virtio_crypto_handle_dataq(VirtIODevice
*vdev
, VirtQueue
*vq
)
932 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
933 VirtIOCryptoReq
*req
;
935 while ((req
= virtio_crypto_get_request(vcrypto
, vq
))) {
936 if (virtio_crypto_handle_request(req
) < 0) {
937 virtqueue_detach_element(req
->vq
, &req
->elem
, 0);
938 virtio_crypto_free_request(req
);
944 static void virtio_crypto_dataq_bh(void *opaque
)
946 VirtIOCryptoQueue
*q
= opaque
;
947 VirtIOCrypto
*vcrypto
= q
->vcrypto
;
948 VirtIODevice
*vdev
= VIRTIO_DEVICE(vcrypto
);
950 /* This happens when device was stopped but BH wasn't. */
951 if (!vdev
->vm_running
) {
955 /* Just in case the driver is not ready on more */
956 if (unlikely(!(vdev
->status
& VIRTIO_CONFIG_S_DRIVER_OK
))) {
961 virtio_crypto_handle_dataq(vdev
, q
->dataq
);
962 virtio_queue_set_notification(q
->dataq
, 1);
964 /* Are we done or did the guest add more buffers? */
965 if (virtio_queue_empty(q
->dataq
)) {
969 virtio_queue_set_notification(q
->dataq
, 0);
974 virtio_crypto_handle_dataq_bh(VirtIODevice
*vdev
, VirtQueue
*vq
)
976 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
977 VirtIOCryptoQueue
*q
=
978 &vcrypto
->vqs
[virtio_crypto_vq2q(virtio_get_queue_index(vq
))];
980 /* This happens when device was stopped but VCPU wasn't. */
981 if (!vdev
->vm_running
) {
984 virtio_queue_set_notification(vq
, 0);
985 qemu_bh_schedule(q
->dataq_bh
);
988 static uint64_t virtio_crypto_get_features(VirtIODevice
*vdev
,
995 static void virtio_crypto_reset(VirtIODevice
*vdev
)
997 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
998 /* multiqueue is disabled by default */
999 vcrypto
->curr_queues
= 1;
1000 if (!cryptodev_backend_is_ready(vcrypto
->cryptodev
)) {
1001 vcrypto
->status
&= ~VIRTIO_CRYPTO_S_HW_READY
;
1003 vcrypto
->status
|= VIRTIO_CRYPTO_S_HW_READY
;
1007 static uint32_t virtio_crypto_init_services(uint32_t qservices
)
1009 uint32_t vservices
= 0;
1011 if (qservices
& (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_CIPHER
)) {
1012 vservices
|= (1 << VIRTIO_CRYPTO_SERVICE_CIPHER
);
1014 if (qservices
& (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_HASH
)) {
1015 vservices
|= (1 << VIRTIO_CRYPTO_SERVICE_HASH
);
1017 if (qservices
& (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_MAC
)) {
1018 vservices
|= (1 << VIRTIO_CRYPTO_SERVICE_MAC
);
1020 if (qservices
& (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_AEAD
)) {
1021 vservices
|= (1 << VIRTIO_CRYPTO_SERVICE_AEAD
);
1023 if (qservices
& (1 << QCRYPTODEV_BACKEND_SERVICE_TYPE_AKCIPHER
)) {
1024 vservices
|= (1 << VIRTIO_CRYPTO_SERVICE_AKCIPHER
);
1030 static void virtio_crypto_init_config(VirtIODevice
*vdev
)
1032 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
1034 vcrypto
->conf
.crypto_services
= virtio_crypto_init_services(
1035 vcrypto
->conf
.cryptodev
->conf
.crypto_services
);
1036 vcrypto
->conf
.cipher_algo_l
=
1037 vcrypto
->conf
.cryptodev
->conf
.cipher_algo_l
;
1038 vcrypto
->conf
.cipher_algo_h
=
1039 vcrypto
->conf
.cryptodev
->conf
.cipher_algo_h
;
1040 vcrypto
->conf
.hash_algo
= vcrypto
->conf
.cryptodev
->conf
.hash_algo
;
1041 vcrypto
->conf
.mac_algo_l
= vcrypto
->conf
.cryptodev
->conf
.mac_algo_l
;
1042 vcrypto
->conf
.mac_algo_h
= vcrypto
->conf
.cryptodev
->conf
.mac_algo_h
;
1043 vcrypto
->conf
.aead_algo
= vcrypto
->conf
.cryptodev
->conf
.aead_algo
;
1044 vcrypto
->conf
.akcipher_algo
= vcrypto
->conf
.cryptodev
->conf
.akcipher_algo
;
1045 vcrypto
->conf
.max_cipher_key_len
=
1046 vcrypto
->conf
.cryptodev
->conf
.max_cipher_key_len
;
1047 vcrypto
->conf
.max_auth_key_len
=
1048 vcrypto
->conf
.cryptodev
->conf
.max_auth_key_len
;
1049 vcrypto
->conf
.max_size
= vcrypto
->conf
.cryptodev
->conf
.max_size
;
1052 static void virtio_crypto_device_realize(DeviceState
*dev
, Error
**errp
)
1054 VirtIODevice
*vdev
= VIRTIO_DEVICE(dev
);
1055 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(dev
);
1058 vcrypto
->cryptodev
= vcrypto
->conf
.cryptodev
;
1059 if (vcrypto
->cryptodev
== NULL
) {
1060 error_setg(errp
, "'cryptodev' parameter expects a valid object");
1062 } else if (cryptodev_backend_is_used(vcrypto
->cryptodev
)) {
1063 error_setg(errp
, "can't use already used cryptodev backend: %s",
1064 object_get_canonical_path_component(OBJECT(vcrypto
->conf
.cryptodev
)));
1068 vcrypto
->max_queues
= MAX(vcrypto
->cryptodev
->conf
.peers
.queues
, 1);
1069 if (vcrypto
->max_queues
+ 1 > VIRTIO_QUEUE_MAX
) {
1070 error_setg(errp
, "Invalid number of queues (= %" PRIu32
"), "
1071 "must be a positive integer less than %d.",
1072 vcrypto
->max_queues
, VIRTIO_QUEUE_MAX
);
1076 virtio_init(vdev
, VIRTIO_ID_CRYPTO
, vcrypto
->config_size
);
1077 vcrypto
->curr_queues
= 1;
1078 vcrypto
->vqs
= g_new0(VirtIOCryptoQueue
, vcrypto
->max_queues
);
1079 for (i
= 0; i
< vcrypto
->max_queues
; i
++) {
1080 vcrypto
->vqs
[i
].dataq
=
1081 virtio_add_queue(vdev
, 1024, virtio_crypto_handle_dataq_bh
);
1082 vcrypto
->vqs
[i
].dataq_bh
=
1083 virtio_bh_new_guarded(dev
, virtio_crypto_dataq_bh
,
1085 vcrypto
->vqs
[i
].vcrypto
= vcrypto
;
1088 vcrypto
->ctrl_vq
= virtio_add_queue(vdev
, 1024, virtio_crypto_handle_ctrl
);
1089 if (!cryptodev_backend_is_ready(vcrypto
->cryptodev
)) {
1090 vcrypto
->status
&= ~VIRTIO_CRYPTO_S_HW_READY
;
1092 vcrypto
->status
|= VIRTIO_CRYPTO_S_HW_READY
;
1095 virtio_crypto_init_config(vdev
);
1096 cryptodev_backend_set_used(vcrypto
->cryptodev
, true);
1099 static void virtio_crypto_device_unrealize(DeviceState
*dev
)
1101 VirtIODevice
*vdev
= VIRTIO_DEVICE(dev
);
1102 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(dev
);
1103 VirtIOCryptoQueue
*q
;
1106 max_queues
= vcrypto
->multiqueue
? vcrypto
->max_queues
: 1;
1107 for (i
= 0; i
< max_queues
; i
++) {
1108 virtio_delete_queue(vcrypto
->vqs
[i
].dataq
);
1109 q
= &vcrypto
->vqs
[i
];
1110 qemu_bh_delete(q
->dataq_bh
);
1113 g_free(vcrypto
->vqs
);
1114 virtio_delete_queue(vcrypto
->ctrl_vq
);
1116 virtio_cleanup(vdev
);
1117 cryptodev_backend_set_used(vcrypto
->cryptodev
, false);
1120 static const VMStateDescription vmstate_virtio_crypto
= {
1121 .name
= "virtio-crypto",
1123 .minimum_version_id
= VIRTIO_CRYPTO_VM_VERSION
,
1124 .version_id
= VIRTIO_CRYPTO_VM_VERSION
,
1125 .fields
= (const VMStateField
[]) {
1126 VMSTATE_VIRTIO_DEVICE
,
1127 VMSTATE_END_OF_LIST()
1131 static Property virtio_crypto_properties
[] = {
1132 DEFINE_PROP_LINK("cryptodev", VirtIOCrypto
, conf
.cryptodev
,
1133 TYPE_CRYPTODEV_BACKEND
, CryptoDevBackend
*),
1134 DEFINE_PROP_END_OF_LIST(),
1137 static void virtio_crypto_get_config(VirtIODevice
*vdev
, uint8_t *config
)
1139 VirtIOCrypto
*c
= VIRTIO_CRYPTO(vdev
);
1140 struct virtio_crypto_config crypto_cfg
= {};
1143 * Virtio-crypto device conforms to VIRTIO 1.0 which is always LE,
1144 * so we can use LE accessors directly.
1146 stl_le_p(&crypto_cfg
.status
, c
->status
);
1147 stl_le_p(&crypto_cfg
.max_dataqueues
, c
->max_queues
);
1148 stl_le_p(&crypto_cfg
.crypto_services
, c
->conf
.crypto_services
);
1149 stl_le_p(&crypto_cfg
.cipher_algo_l
, c
->conf
.cipher_algo_l
);
1150 stl_le_p(&crypto_cfg
.cipher_algo_h
, c
->conf
.cipher_algo_h
);
1151 stl_le_p(&crypto_cfg
.hash_algo
, c
->conf
.hash_algo
);
1152 stl_le_p(&crypto_cfg
.mac_algo_l
, c
->conf
.mac_algo_l
);
1153 stl_le_p(&crypto_cfg
.mac_algo_h
, c
->conf
.mac_algo_h
);
1154 stl_le_p(&crypto_cfg
.aead_algo
, c
->conf
.aead_algo
);
1155 stl_le_p(&crypto_cfg
.max_cipher_key_len
, c
->conf
.max_cipher_key_len
);
1156 stl_le_p(&crypto_cfg
.max_auth_key_len
, c
->conf
.max_auth_key_len
);
1157 stq_le_p(&crypto_cfg
.max_size
, c
->conf
.max_size
);
1158 stl_le_p(&crypto_cfg
.akcipher_algo
, c
->conf
.akcipher_algo
);
1160 memcpy(config
, &crypto_cfg
, c
->config_size
);
1163 static bool virtio_crypto_started(VirtIOCrypto
*c
, uint8_t status
)
1165 VirtIODevice
*vdev
= VIRTIO_DEVICE(c
);
1166 return (status
& VIRTIO_CONFIG_S_DRIVER_OK
) &&
1167 (c
->status
& VIRTIO_CRYPTO_S_HW_READY
) && vdev
->vm_running
;
1170 static void virtio_crypto_vhost_status(VirtIOCrypto
*c
, uint8_t status
)
1172 VirtIODevice
*vdev
= VIRTIO_DEVICE(c
);
1173 int queues
= c
->multiqueue
? c
->max_queues
: 1;
1174 CryptoDevBackend
*b
= c
->cryptodev
;
1175 CryptoDevBackendClient
*cc
= b
->conf
.peers
.ccs
[0];
1177 if (!cryptodev_get_vhost(cc
, b
, 0)) {
1181 if ((virtio_crypto_started(c
, status
)) == !!c
->vhost_started
) {
1185 if (!c
->vhost_started
) {
1188 c
->vhost_started
= 1;
1189 r
= cryptodev_vhost_start(vdev
, queues
);
1191 error_report("unable to start vhost crypto: %d: "
1192 "falling back on userspace virtio", -r
);
1193 c
->vhost_started
= 0;
1196 cryptodev_vhost_stop(vdev
, queues
);
1197 c
->vhost_started
= 0;
1201 static void virtio_crypto_set_status(VirtIODevice
*vdev
, uint8_t status
)
1203 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
1205 virtio_crypto_vhost_status(vcrypto
, status
);
1208 static void virtio_crypto_guest_notifier_mask(VirtIODevice
*vdev
, int idx
,
1211 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
1212 int queue
= virtio_crypto_vq2q(idx
);
1214 assert(vcrypto
->vhost_started
);
1217 * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
1218 * as the macro of configure interrupt's IDX, If this driver does not
1219 * support, the function will return
1222 if (idx
== VIRTIO_CONFIG_IRQ_IDX
) {
1225 cryptodev_vhost_virtqueue_mask(vdev
, queue
, idx
, mask
);
1228 static bool virtio_crypto_guest_notifier_pending(VirtIODevice
*vdev
, int idx
)
1230 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
1231 int queue
= virtio_crypto_vq2q(idx
);
1233 assert(vcrypto
->vhost_started
);
1236 * Add the check for configure interrupt, Use VIRTIO_CONFIG_IRQ_IDX -1
1237 * as the macro of configure interrupt's IDX, If this driver does not
1238 * support, the function will return
1241 if (idx
== VIRTIO_CONFIG_IRQ_IDX
) {
1244 return cryptodev_vhost_virtqueue_pending(vdev
, queue
, idx
);
1247 static struct vhost_dev
*virtio_crypto_get_vhost(VirtIODevice
*vdev
)
1249 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(vdev
);
1250 CryptoDevBackend
*b
;
1251 CryptoDevBackendClient
*cc
;
1252 CryptoDevBackendVhost
*vhost_crypto
;
1254 b
= vcrypto
->cryptodev
;
1259 cc
= b
->conf
.peers
.ccs
[0];
1260 vhost_crypto
= cryptodev_get_vhost(cc
, b
, 0);
1261 if (!vhost_crypto
) {
1265 return &vhost_crypto
->dev
;
1268 static void virtio_crypto_class_init(ObjectClass
*klass
, void *data
)
1270 DeviceClass
*dc
= DEVICE_CLASS(klass
);
1271 VirtioDeviceClass
*vdc
= VIRTIO_DEVICE_CLASS(klass
);
1273 device_class_set_props(dc
, virtio_crypto_properties
);
1274 dc
->vmsd
= &vmstate_virtio_crypto
;
1275 set_bit(DEVICE_CATEGORY_MISC
, dc
->categories
);
1276 vdc
->realize
= virtio_crypto_device_realize
;
1277 vdc
->unrealize
= virtio_crypto_device_unrealize
;
1278 vdc
->get_config
= virtio_crypto_get_config
;
1279 vdc
->get_features
= virtio_crypto_get_features
;
1280 vdc
->reset
= virtio_crypto_reset
;
1281 vdc
->set_status
= virtio_crypto_set_status
;
1282 vdc
->guest_notifier_mask
= virtio_crypto_guest_notifier_mask
;
1283 vdc
->guest_notifier_pending
= virtio_crypto_guest_notifier_pending
;
1284 vdc
->get_vhost
= virtio_crypto_get_vhost
;
1287 static void virtio_crypto_instance_init(Object
*obj
)
1289 VirtIOCrypto
*vcrypto
= VIRTIO_CRYPTO(obj
);
1292 * The default config_size is sizeof(struct virtio_crypto_config).
1293 * Can be overridden with virtio_crypto_set_config_size.
1295 vcrypto
->config_size
= sizeof(struct virtio_crypto_config
);
1298 static const TypeInfo virtio_crypto_info
= {
1299 .name
= TYPE_VIRTIO_CRYPTO
,
1300 .parent
= TYPE_VIRTIO_DEVICE
,
1301 .instance_size
= sizeof(VirtIOCrypto
),
1302 .instance_init
= virtio_crypto_instance_init
,
1303 .class_init
= virtio_crypto_class_init
,
1306 static void virtio_register_types(void)
1308 type_register_static(&virtio_crypto_info
);
1311 type_init(virtio_register_types
)