2 * Virtio crypto Support
4 * Copyright (c) 2016 HUAWEI TECHNOLOGIES CO., LTD.
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.
13 #include "qemu/osdep.h"
16 #include "qapi/error.h"
17 #include "qemu/error-report.h"
19 #include "hw/virtio/virtio.h"
20 #include "hw/virtio/virtio-crypto.h"
21 #include "hw/virtio/virtio-access.h"
22 #include "standard-headers/linux/virtio_ids.h"
24 #define VIRTIO_CRYPTO_VM_VERSION 1
27 * Transfer virtqueue index to crypto queue index.
28 * The control virtqueue is after the data virtqueues
29 * so the input value doesn't need to be adjusted
31 static inline int virtio_crypto_vq2q(int queue_index)
37 virtio_crypto_cipher_session_helper(VirtIODevice *vdev,
38 CryptoDevBackendSymSessionInfo *info,
39 struct virtio_crypto_cipher_session_para *cipher_para,
40 struct iovec **iov, unsigned int *out_num)
42 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
43 unsigned int num = *out_num;
45 info->cipher_alg = ldl_le_p(&cipher_para->algo);
46 info->key_len = ldl_le_p(&cipher_para->keylen);
47 info->direction = ldl_le_p(&cipher_para->op);
48 DPRINTF("cipher_alg=%" PRIu32 ", info->direction=%" PRIu32 "\n",
49 info->cipher_alg, info->direction);
51 if (info->key_len > vcrypto->conf.max_cipher_key_len) {
52 error_report("virtio-crypto length of cipher key is too big: %u",
54 return -VIRTIO_CRYPTO_ERR;
57 if (info->key_len > 0) {
59 DPRINTF("keylen=%" PRIu32 "\n", info->key_len);
61 info->cipher_key = g_malloc(info->key_len);
62 s = iov_to_buf(*iov, num, 0, info->cipher_key, info->key_len);
63 if (unlikely(s != info->key_len)) {
64 virtio_error(vdev, "virtio-crypto cipher key incorrect");
67 iov_discard_front(iov, &num, info->key_len);
75 virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto,
76 struct virtio_crypto_sym_create_session_req *sess_req,
79 struct iovec *iov, unsigned int out_num)
81 VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
82 CryptoDevBackendSymSessionInfo info;
86 Error *local_err = NULL;
89 memset(&info, 0, sizeof(info));
90 op_type = ldl_le_p(&sess_req->op_type);
91 info.op_type = op_type;
92 info.op_code = opcode;
94 if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) {
95 ret = virtio_crypto_cipher_session_helper(vdev, &info,
96 &sess_req->u.cipher.para,
101 } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
104 ret = virtio_crypto_cipher_session_helper(vdev, &info,
105 &sess_req->u.chain.para.cipher_param,
111 info.alg_chain_order = ldl_le_p(
112 &sess_req->u.chain.para.alg_chain_order);
113 info.add_len = ldl_le_p(&sess_req->u.chain.para.aad_len);
114 info.hash_mode = ldl_le_p(&sess_req->u.chain.para.hash_mode);
115 if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) {
116 info.hash_alg = ldl_le_p(&sess_req->u.chain.para.u.mac_param.algo);
117 info.auth_key_len = ldl_le_p(
118 &sess_req->u.chain.para.u.mac_param.auth_key_len);
119 info.hash_result_len = ldl_le_p(
120 &sess_req->u.chain.para.u.mac_param.hash_result_len);
121 if (info.auth_key_len > vcrypto->conf.max_auth_key_len) {
122 error_report("virtio-crypto length of auth key is too big: %u",
124 ret = -VIRTIO_CRYPTO_ERR;
128 if (info.auth_key_len > 0) {
129 DPRINTF("auth_keylen=%" PRIu32 "\n", info.auth_key_len);
130 info.auth_key = g_malloc(info.auth_key_len);
131 s = iov_to_buf(iov, out_num, 0, info.auth_key,
133 if (unlikely(s != info.auth_key_len)) {
135 "virtio-crypto authenticated key incorrect");
139 iov_discard_front(&iov, &out_num, info.auth_key_len);
141 } else if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) {
142 info.hash_alg = ldl_le_p(
143 &sess_req->u.chain.para.u.hash_param.algo);
144 info.hash_result_len = ldl_le_p(
145 &sess_req->u.chain.para.u.hash_param.hash_result_len);
147 /* VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */
148 error_report("unsupported hash mode");
149 ret = -VIRTIO_CRYPTO_NOTSUPP;
153 /* VIRTIO_CRYPTO_SYM_OP_NONE */
154 error_report("unsupported cipher op_type: VIRTIO_CRYPTO_SYM_OP_NONE");
155 ret = -VIRTIO_CRYPTO_NOTSUPP;
159 queue_index = virtio_crypto_vq2q(queue_id);
160 session_id = cryptodev_backend_sym_create_session(
162 &info, queue_index, &local_err);
163 if (session_id >= 0) {
164 DPRINTF("create session_id=%" PRIu64 " successfully\n",
170 error_report_err(local_err);
172 ret = -VIRTIO_CRYPTO_ERR;
176 g_free(info.cipher_key);
177 g_free(info.auth_key);
182 virtio_crypto_handle_close_session(VirtIOCrypto *vcrypto,
183 struct virtio_crypto_destroy_session_req *close_sess_req,
189 Error *local_err = NULL;
191 session_id = ldq_le_p(&close_sess_req->session_id);
192 DPRINTF("close session, id=%" PRIu64 "\n", session_id);
194 ret = cryptodev_backend_sym_close_session(
195 vcrypto->cryptodev, session_id, queue_id, &local_err);
197 status = VIRTIO_CRYPTO_OK;
200 error_report_err(local_err);
202 error_report("destroy session failed");
204 status = VIRTIO_CRYPTO_ERR;
210 static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq)
212 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
213 struct virtio_crypto_op_ctrl_req ctrl;
214 VirtQueueElement *elem;
215 struct iovec *in_iov;
216 struct iovec *out_iov;
221 struct virtio_crypto_session_input input;
227 elem = virtqueue_pop(vq, sizeof(VirtQueueElement));
231 if (elem->out_num < 1 || elem->in_num < 1) {
232 virtio_error(vdev, "virtio-crypto ctrl missing headers");
233 virtqueue_detach_element(vq, elem, 0);
238 out_num = elem->out_num;
239 out_iov = elem->out_sg;
240 in_num = elem->in_num;
241 in_iov = elem->in_sg;
242 if (unlikely(iov_to_buf(out_iov, out_num, 0, &ctrl, sizeof(ctrl))
244 virtio_error(vdev, "virtio-crypto request ctrl_hdr too short");
245 virtqueue_detach_element(vq, elem, 0);
249 iov_discard_front(&out_iov, &out_num, sizeof(ctrl));
251 opcode = ldl_le_p(&ctrl.header.opcode);
252 queue_id = ldl_le_p(&ctrl.header.queue_id);
255 case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION:
256 memset(&input, 0, sizeof(input));
257 session_id = virtio_crypto_create_sym_session(vcrypto,
258 &ctrl.u.sym_create_session,
261 /* Serious errors, need to reset virtio crypto device */
262 if (session_id == -EFAULT) {
263 virtqueue_detach_element(vq, elem, 0);
265 } else if (session_id == -VIRTIO_CRYPTO_NOTSUPP) {
266 stl_le_p(&input.status, VIRTIO_CRYPTO_NOTSUPP);
267 } else if (session_id == -VIRTIO_CRYPTO_ERR) {
268 stl_le_p(&input.status, VIRTIO_CRYPTO_ERR);
270 /* Set the session id */
271 stq_le_p(&input.session_id, session_id);
272 stl_le_p(&input.status, VIRTIO_CRYPTO_OK);
275 s = iov_from_buf(in_iov, in_num, 0, &input, sizeof(input));
276 if (unlikely(s != sizeof(input))) {
277 virtio_error(vdev, "virtio-crypto input incorrect");
278 virtqueue_detach_element(vq, elem, 0);
281 virtqueue_push(vq, elem, sizeof(input));
282 virtio_notify(vdev, vq);
284 case VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION:
285 case VIRTIO_CRYPTO_HASH_DESTROY_SESSION:
286 case VIRTIO_CRYPTO_MAC_DESTROY_SESSION:
287 case VIRTIO_CRYPTO_AEAD_DESTROY_SESSION:
288 status = virtio_crypto_handle_close_session(vcrypto,
289 &ctrl.u.destroy_session, queue_id);
290 /* The status only occupy one byte, we can directly use it */
291 s = iov_from_buf(in_iov, in_num, 0, &status, sizeof(status));
292 if (unlikely(s != sizeof(status))) {
293 virtio_error(vdev, "virtio-crypto status incorrect");
294 virtqueue_detach_element(vq, elem, 0);
297 virtqueue_push(vq, elem, sizeof(status));
298 virtio_notify(vdev, vq);
300 case VIRTIO_CRYPTO_HASH_CREATE_SESSION:
301 case VIRTIO_CRYPTO_MAC_CREATE_SESSION:
302 case VIRTIO_CRYPTO_AEAD_CREATE_SESSION:
304 error_report("virtio-crypto unsupported ctrl opcode: %d", opcode);
305 memset(&input, 0, sizeof(input));
306 stl_le_p(&input.status, VIRTIO_CRYPTO_NOTSUPP);
307 s = iov_from_buf(in_iov, in_num, 0, &input, sizeof(input));
308 if (unlikely(s != sizeof(input))) {
309 virtio_error(vdev, "virtio-crypto input incorrect");
310 virtqueue_detach_element(vq, elem, 0);
313 virtqueue_push(vq, elem, sizeof(input));
314 virtio_notify(vdev, vq);
317 } /* end switch case */
323 static void virtio_crypto_init_request(VirtIOCrypto *vcrypto, VirtQueue *vq,
324 VirtIOCryptoReq *req)
326 req->vcrypto = vcrypto;
332 req->flags = CRYPTODEV_BACKEND_ALG__MAX;
333 req->u.sym_op_info = NULL;
336 static void virtio_crypto_free_request(VirtIOCryptoReq *req)
339 if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) {
340 g_free(req->u.sym_op_info);
347 virtio_crypto_sym_input_data_helper(VirtIODevice *vdev,
348 VirtIOCryptoReq *req,
350 CryptoDevBackendSymOpInfo *sym_op_info)
354 if (status != VIRTIO_CRYPTO_OK) {
358 len = sym_op_info->dst_len;
359 /* Save the cipher result */
360 s = iov_from_buf(req->in_iov, req->in_num, 0, sym_op_info->dst, len);
362 virtio_error(vdev, "virtio-crypto dest data incorrect");
366 iov_discard_front(&req->in_iov, &req->in_num, len);
368 if (sym_op_info->op_type ==
369 VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
370 /* Save the digest result */
371 s = iov_from_buf(req->in_iov, req->in_num, 0,
372 sym_op_info->digest_result,
373 sym_op_info->digest_result_len);
374 if (s != sym_op_info->digest_result_len) {
375 virtio_error(vdev, "virtio-crypto digest result incorrect");
380 static void virtio_crypto_req_complete(VirtIOCryptoReq *req, uint8_t status)
382 VirtIOCrypto *vcrypto = req->vcrypto;
383 VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
385 if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) {
386 virtio_crypto_sym_input_data_helper(vdev, req, status,
389 stb_p(&req->in->status, status);
390 virtqueue_push(req->vq, &req->elem, req->in_len);
391 virtio_notify(vdev, req->vq);
394 static VirtIOCryptoReq *
395 virtio_crypto_get_request(VirtIOCrypto *s, VirtQueue *vq)
397 VirtIOCryptoReq *req = virtqueue_pop(vq, sizeof(VirtIOCryptoReq));
400 virtio_crypto_init_request(s, vq, req);
405 static CryptoDevBackendSymOpInfo *
406 virtio_crypto_sym_op_helper(VirtIODevice *vdev,
407 struct virtio_crypto_cipher_para *cipher_para,
408 struct virtio_crypto_alg_chain_data_para *alg_chain_para,
409 struct iovec *iov, unsigned int out_num)
411 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
412 CryptoDevBackendSymOpInfo *op_info;
413 uint32_t src_len = 0, dst_len = 0;
415 uint32_t aad_len = 0, hash_result_len = 0;
416 uint32_t hash_start_src_offset = 0, len_to_hash = 0;
417 uint32_t cipher_start_src_offset = 0, len_to_cipher = 0;
419 uint64_t max_len, curr_size = 0;
424 iv_len = ldl_le_p(&cipher_para->iv_len);
425 src_len = ldl_le_p(&cipher_para->src_data_len);
426 dst_len = ldl_le_p(&cipher_para->dst_data_len);
427 } else if (alg_chain_para) { /* Algorithm chain */
428 iv_len = ldl_le_p(&alg_chain_para->iv_len);
429 src_len = ldl_le_p(&alg_chain_para->src_data_len);
430 dst_len = ldl_le_p(&alg_chain_para->dst_data_len);
432 aad_len = ldl_le_p(&alg_chain_para->aad_len);
433 hash_result_len = ldl_le_p(&alg_chain_para->hash_result_len);
434 hash_start_src_offset = ldl_le_p(
435 &alg_chain_para->hash_start_src_offset);
436 cipher_start_src_offset = ldl_le_p(
437 &alg_chain_para->cipher_start_src_offset);
438 len_to_cipher = ldl_le_p(&alg_chain_para->len_to_cipher);
439 len_to_hash = ldl_le_p(&alg_chain_para->len_to_hash);
444 max_len = (uint64_t)iv_len + aad_len + src_len + dst_len + hash_result_len;
445 if (unlikely(max_len > vcrypto->conf.max_size)) {
446 virtio_error(vdev, "virtio-crypto too big length");
450 op_info = g_malloc0(sizeof(CryptoDevBackendSymOpInfo) + max_len);
451 op_info->iv_len = iv_len;
452 op_info->src_len = src_len;
453 op_info->dst_len = dst_len;
454 op_info->aad_len = aad_len;
455 op_info->digest_result_len = hash_result_len;
456 op_info->hash_start_src_offset = hash_start_src_offset;
457 op_info->len_to_hash = len_to_hash;
458 op_info->cipher_start_src_offset = cipher_start_src_offset;
459 op_info->len_to_cipher = len_to_cipher;
460 /* Handle the initilization vector */
461 if (op_info->iv_len > 0) {
462 DPRINTF("iv_len=%" PRIu32 "\n", op_info->iv_len);
463 op_info->iv = op_info->data + curr_size;
465 s = iov_to_buf(iov, out_num, 0, op_info->iv, op_info->iv_len);
466 if (unlikely(s != op_info->iv_len)) {
467 virtio_error(vdev, "virtio-crypto iv incorrect");
470 iov_discard_front(&iov, &out_num, op_info->iv_len);
471 curr_size += op_info->iv_len;
474 /* Handle additional authentication data if exists */
475 if (op_info->aad_len > 0) {
476 DPRINTF("aad_len=%" PRIu32 "\n", op_info->aad_len);
477 op_info->aad_data = op_info->data + curr_size;
479 s = iov_to_buf(iov, out_num, 0, op_info->aad_data, op_info->aad_len);
480 if (unlikely(s != op_info->aad_len)) {
481 virtio_error(vdev, "virtio-crypto additional auth data incorrect");
484 iov_discard_front(&iov, &out_num, op_info->aad_len);
486 curr_size += op_info->aad_len;
489 /* Handle the source data */
490 if (op_info->src_len > 0) {
491 DPRINTF("src_len=%" PRIu32 "\n", op_info->src_len);
492 op_info->src = op_info->data + curr_size;
494 s = iov_to_buf(iov, out_num, 0, op_info->src, op_info->src_len);
495 if (unlikely(s != op_info->src_len)) {
496 virtio_error(vdev, "virtio-crypto source data incorrect");
499 iov_discard_front(&iov, &out_num, op_info->src_len);
501 curr_size += op_info->src_len;
504 /* Handle the destination data */
505 op_info->dst = op_info->data + curr_size;
506 curr_size += op_info->dst_len;
508 DPRINTF("dst_len=%" PRIu32 "\n", op_info->dst_len);
510 /* Handle the hash digest result */
511 if (hash_result_len > 0) {
512 DPRINTF("hash_result_len=%" PRIu32 "\n", hash_result_len);
513 op_info->digest_result = op_info->data + curr_size;
524 virtio_crypto_handle_sym_req(VirtIOCrypto *vcrypto,
525 struct virtio_crypto_sym_data_req *req,
526 CryptoDevBackendSymOpInfo **sym_op_info,
527 struct iovec *iov, unsigned int out_num)
529 VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
531 CryptoDevBackendSymOpInfo *op_info;
533 op_type = ldl_le_p(&req->op_type);
535 if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) {
536 op_info = virtio_crypto_sym_op_helper(vdev, &req->u.cipher.para,
541 op_info->op_type = op_type;
542 } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) {
543 op_info = virtio_crypto_sym_op_helper(vdev, NULL,
549 op_info->op_type = op_type;
551 /* VIRTIO_CRYPTO_SYM_OP_NONE */
552 error_report("virtio-crypto unsupported cipher type");
553 return -VIRTIO_CRYPTO_NOTSUPP;
556 *sym_op_info = op_info;
562 virtio_crypto_handle_request(VirtIOCryptoReq *request)
564 VirtIOCrypto *vcrypto = request->vcrypto;
565 VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
566 VirtQueueElement *elem = &request->elem;
567 int queue_index = virtio_crypto_vq2q(virtio_get_queue_index(request->vq));
568 struct virtio_crypto_op_data_req req;
570 struct iovec *in_iov;
571 struct iovec *out_iov;
575 uint8_t status = VIRTIO_CRYPTO_ERR;
577 CryptoDevBackendSymOpInfo *sym_op_info = NULL;
578 Error *local_err = NULL;
580 if (elem->out_num < 1 || elem->in_num < 1) {
581 virtio_error(vdev, "virtio-crypto dataq missing headers");
585 out_num = elem->out_num;
586 out_iov = elem->out_sg;
587 in_num = elem->in_num;
588 in_iov = elem->in_sg;
589 if (unlikely(iov_to_buf(out_iov, out_num, 0, &req, sizeof(req))
591 virtio_error(vdev, "virtio-crypto request outhdr too short");
594 iov_discard_front(&out_iov, &out_num, sizeof(req));
596 if (in_iov[in_num - 1].iov_len <
597 sizeof(struct virtio_crypto_inhdr)) {
598 virtio_error(vdev, "virtio-crypto request inhdr too short");
601 /* We always touch the last byte, so just see how big in_iov is. */
602 request->in_len = iov_size(in_iov, in_num);
603 request->in = (void *)in_iov[in_num - 1].iov_base
604 + in_iov[in_num - 1].iov_len
605 - sizeof(struct virtio_crypto_inhdr);
606 iov_discard_back(in_iov, &in_num, sizeof(struct virtio_crypto_inhdr));
609 * The length of operation result, including dest_data
610 * and digest_result if exists.
612 request->in_num = in_num;
613 request->in_iov = in_iov;
615 opcode = ldl_le_p(&req.header.opcode);
616 session_id = ldq_le_p(&req.header.session_id);
619 case VIRTIO_CRYPTO_CIPHER_ENCRYPT:
620 case VIRTIO_CRYPTO_CIPHER_DECRYPT:
621 ret = virtio_crypto_handle_sym_req(vcrypto,
625 /* Serious errors, need to reset virtio crypto device */
626 if (ret == -EFAULT) {
628 } else if (ret == -VIRTIO_CRYPTO_NOTSUPP) {
629 virtio_crypto_req_complete(request, VIRTIO_CRYPTO_NOTSUPP);
630 virtio_crypto_free_request(request);
632 sym_op_info->session_id = session_id;
634 /* Set request's parameter */
635 request->flags = CRYPTODEV_BACKEND_ALG_SYM;
636 request->u.sym_op_info = sym_op_info;
637 ret = cryptodev_backend_crypto_operation(vcrypto->cryptodev,
638 request, queue_index, &local_err);
642 error_report_err(local_err);
644 } else { /* ret == VIRTIO_CRYPTO_OK */
647 virtio_crypto_req_complete(request, status);
648 virtio_crypto_free_request(request);
651 case VIRTIO_CRYPTO_HASH:
652 case VIRTIO_CRYPTO_MAC:
653 case VIRTIO_CRYPTO_AEAD_ENCRYPT:
654 case VIRTIO_CRYPTO_AEAD_DECRYPT:
656 error_report("virtio-crypto unsupported dataq opcode: %u",
658 virtio_crypto_req_complete(request, VIRTIO_CRYPTO_NOTSUPP);
659 virtio_crypto_free_request(request);
665 static void virtio_crypto_handle_dataq(VirtIODevice *vdev, VirtQueue *vq)
667 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
668 VirtIOCryptoReq *req;
670 while ((req = virtio_crypto_get_request(vcrypto, vq))) {
671 if (virtio_crypto_handle_request(req) < 0) {
672 virtqueue_detach_element(req->vq, &req->elem, 0);
673 virtio_crypto_free_request(req);
679 static void virtio_crypto_dataq_bh(void *opaque)
681 VirtIOCryptoQueue *q = opaque;
682 VirtIOCrypto *vcrypto = q->vcrypto;
683 VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto);
685 /* This happens when device was stopped but BH wasn't. */
686 if (!vdev->vm_running) {
690 /* Just in case the driver is not ready on more */
691 if (unlikely(!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK))) {
696 virtio_crypto_handle_dataq(vdev, q->dataq);
697 virtio_queue_set_notification(q->dataq, 1);
699 /* Are we done or did the guest add more buffers? */
700 if (virtio_queue_empty(q->dataq)) {
704 virtio_queue_set_notification(q->dataq, 0);
709 virtio_crypto_handle_dataq_bh(VirtIODevice *vdev, VirtQueue *vq)
711 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
712 VirtIOCryptoQueue *q =
713 &vcrypto->vqs[virtio_crypto_vq2q(virtio_get_queue_index(vq))];
715 /* This happens when device was stopped but VCPU wasn't. */
716 if (!vdev->vm_running) {
719 virtio_queue_set_notification(vq, 0);
720 qemu_bh_schedule(q->dataq_bh);
723 static uint64_t virtio_crypto_get_features(VirtIODevice *vdev,
730 static void virtio_crypto_reset(VirtIODevice *vdev)
732 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
733 /* multiqueue is disabled by default */
734 vcrypto->curr_queues = 1;
735 if (!vcrypto->cryptodev->ready) {
736 vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY;
738 vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY;
742 static void virtio_crypto_init_config(VirtIODevice *vdev)
744 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev);
746 vcrypto->conf.crypto_services =
747 vcrypto->conf.cryptodev->conf.crypto_services;
748 vcrypto->conf.cipher_algo_l =
749 vcrypto->conf.cryptodev->conf.cipher_algo_l;
750 vcrypto->conf.cipher_algo_h =
751 vcrypto->conf.cryptodev->conf.cipher_algo_h;
752 vcrypto->conf.hash_algo = vcrypto->conf.cryptodev->conf.hash_algo;
753 vcrypto->conf.mac_algo_l = vcrypto->conf.cryptodev->conf.mac_algo_l;
754 vcrypto->conf.mac_algo_h = vcrypto->conf.cryptodev->conf.mac_algo_h;
755 vcrypto->conf.aead_algo = vcrypto->conf.cryptodev->conf.aead_algo;
756 vcrypto->conf.max_cipher_key_len =
757 vcrypto->conf.cryptodev->conf.max_cipher_key_len;
758 vcrypto->conf.max_auth_key_len =
759 vcrypto->conf.cryptodev->conf.max_auth_key_len;
760 vcrypto->conf.max_size = vcrypto->conf.cryptodev->conf.max_size;
763 static void virtio_crypto_device_realize(DeviceState *dev, Error **errp)
765 VirtIODevice *vdev = VIRTIO_DEVICE(dev);
766 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
769 vcrypto->cryptodev = vcrypto->conf.cryptodev;
770 if (vcrypto->cryptodev == NULL) {
771 error_setg(errp, "'cryptodev' parameter expects a valid object");
775 vcrypto->max_queues = MAX(vcrypto->cryptodev->conf.peers.queues, 1);
776 if (vcrypto->max_queues + 1 > VIRTIO_QUEUE_MAX) {
777 error_setg(errp, "Invalid number of queues (= %" PRIu32 "), "
778 "must be a postive integer less than %d.",
779 vcrypto->max_queues, VIRTIO_QUEUE_MAX);
783 virtio_init(vdev, "virtio-crypto", VIRTIO_ID_CRYPTO, vcrypto->config_size);
784 vcrypto->curr_queues = 1;
785 vcrypto->vqs = g_malloc0(sizeof(VirtIOCryptoQueue) * vcrypto->max_queues);
786 for (i = 0; i < vcrypto->max_queues; i++) {
787 vcrypto->vqs[i].dataq =
788 virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq_bh);
789 vcrypto->vqs[i].dataq_bh =
790 qemu_bh_new(virtio_crypto_dataq_bh, &vcrypto->vqs[i]);
791 vcrypto->vqs[i].vcrypto = vcrypto;
794 vcrypto->ctrl_vq = virtio_add_queue(vdev, 64, virtio_crypto_handle_ctrl);
795 if (!vcrypto->cryptodev->ready) {
796 vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY;
798 vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY;
801 virtio_crypto_init_config(vdev);
804 static void virtio_crypto_device_unrealize(DeviceState *dev, Error **errp)
806 VirtIODevice *vdev = VIRTIO_DEVICE(dev);
807 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev);
808 VirtIOCryptoQueue *q;
811 max_queues = vcrypto->multiqueue ? vcrypto->max_queues : 1;
812 for (i = 0; i < max_queues; i++) {
813 virtio_del_queue(vdev, i);
814 q = &vcrypto->vqs[i];
815 qemu_bh_delete(q->dataq_bh);
818 g_free(vcrypto->vqs);
820 virtio_cleanup(vdev);
823 static const VMStateDescription vmstate_virtio_crypto = {
824 .name = "virtio-crypto",
826 .minimum_version_id = VIRTIO_CRYPTO_VM_VERSION,
827 .version_id = VIRTIO_CRYPTO_VM_VERSION,
828 .fields = (VMStateField[]) {
829 VMSTATE_VIRTIO_DEVICE,
830 VMSTATE_END_OF_LIST()
834 static Property virtio_crypto_properties[] = {
835 DEFINE_PROP_END_OF_LIST(),
838 static void virtio_crypto_get_config(VirtIODevice *vdev, uint8_t *config)
840 VirtIOCrypto *c = VIRTIO_CRYPTO(vdev);
841 struct virtio_crypto_config crypto_cfg = {};
844 * Virtio-crypto device conforms to VIRTIO 1.0 which is always LE,
845 * so we can use LE accessors directly.
847 stl_le_p(&crypto_cfg.status, c->status);
848 stl_le_p(&crypto_cfg.max_dataqueues, c->max_queues);
849 stl_le_p(&crypto_cfg.crypto_services, c->conf.crypto_services);
850 stl_le_p(&crypto_cfg.cipher_algo_l, c->conf.cipher_algo_l);
851 stl_le_p(&crypto_cfg.cipher_algo_h, c->conf.cipher_algo_h);
852 stl_le_p(&crypto_cfg.hash_algo, c->conf.hash_algo);
853 stl_le_p(&crypto_cfg.mac_algo_l, c->conf.mac_algo_l);
854 stl_le_p(&crypto_cfg.mac_algo_h, c->conf.mac_algo_h);
855 stl_le_p(&crypto_cfg.aead_algo, c->conf.aead_algo);
856 stl_le_p(&crypto_cfg.max_cipher_key_len, c->conf.max_cipher_key_len);
857 stl_le_p(&crypto_cfg.max_auth_key_len, c->conf.max_auth_key_len);
858 stq_le_p(&crypto_cfg.max_size, c->conf.max_size);
860 memcpy(config, &crypto_cfg, c->config_size);
863 static void virtio_crypto_class_init(ObjectClass *klass, void *data)
865 DeviceClass *dc = DEVICE_CLASS(klass);
866 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
868 dc->props = virtio_crypto_properties;
869 dc->vmsd = &vmstate_virtio_crypto;
870 set_bit(DEVICE_CATEGORY_MISC, dc->categories);
871 vdc->realize = virtio_crypto_device_realize;
872 vdc->unrealize = virtio_crypto_device_unrealize;
873 vdc->get_config = virtio_crypto_get_config;
874 vdc->get_features = virtio_crypto_get_features;
875 vdc->reset = virtio_crypto_reset;
878 static void virtio_crypto_instance_init(Object *obj)
880 VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(obj);
883 * The default config_size is sizeof(struct virtio_crypto_config).
884 * Can be overriden with virtio_crypto_set_config_size.
886 vcrypto->config_size = sizeof(struct virtio_crypto_config);
888 object_property_add_link(obj, "cryptodev",
889 TYPE_CRYPTODEV_BACKEND,
890 (Object **)&vcrypto->conf.cryptodev,
891 qdev_prop_allow_set_link_before_realize,
892 OBJ_PROP_LINK_UNREF_ON_RELEASE, NULL);
895 static const TypeInfo virtio_crypto_info = {
896 .name = TYPE_VIRTIO_CRYPTO,
897 .parent = TYPE_VIRTIO_DEVICE,
898 .instance_size = sizeof(VirtIOCrypto),
899 .instance_init = virtio_crypto_instance_init,
900 .class_init = virtio_crypto_class_init,
903 static void virtio_register_types(void)
905 type_register_static(&virtio_crypto_info);
908 type_init(virtio_register_types)