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ea4d8ac2 GA |
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 | */ | |
0b8fa32f | 13 | |
ea4d8ac2 GA |
14 | #include "qemu/osdep.h" |
15 | #include "qemu/iov.h" | |
db725815 | 16 | #include "qemu/main-loop.h" |
0b8fa32f | 17 | #include "qemu/module.h" |
ea4d8ac2 GA |
18 | #include "qapi/error.h" |
19 | #include "qemu/error-report.h" | |
20 | ||
21 | #include "hw/virtio/virtio.h" | |
22 | #include "hw/virtio/virtio-crypto.h" | |
a27bd6c7 | 23 | #include "hw/qdev-properties.h" |
ea4d8ac2 GA |
24 | #include "hw/virtio/virtio-access.h" |
25 | #include "standard-headers/linux/virtio_ids.h" | |
5da73dab | 26 | #include "sysemu/cryptodev-vhost.h" |
ea4d8ac2 GA |
27 | |
28 | #define VIRTIO_CRYPTO_VM_VERSION 1 | |
29 | ||
59c360ca GA |
30 | /* |
31 | * Transfer virtqueue index to crypto queue index. | |
32 | * The control virtqueue is after the data virtqueues | |
33 | * so the input value doesn't need to be adjusted | |
34 | */ | |
35 | static inline int virtio_crypto_vq2q(int queue_index) | |
36 | { | |
37 | return queue_index; | |
38 | } | |
39 | ||
40 | static int | |
41 | virtio_crypto_cipher_session_helper(VirtIODevice *vdev, | |
42 | CryptoDevBackendSymSessionInfo *info, | |
43 | struct virtio_crypto_cipher_session_para *cipher_para, | |
44 | struct iovec **iov, unsigned int *out_num) | |
45 | { | |
46 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
47 | unsigned int num = *out_num; | |
48 | ||
49 | info->cipher_alg = ldl_le_p(&cipher_para->algo); | |
50 | info->key_len = ldl_le_p(&cipher_para->keylen); | |
51 | info->direction = ldl_le_p(&cipher_para->op); | |
52 | DPRINTF("cipher_alg=%" PRIu32 ", info->direction=%" PRIu32 "\n", | |
53 | info->cipher_alg, info->direction); | |
54 | ||
55 | if (info->key_len > vcrypto->conf.max_cipher_key_len) { | |
56 | error_report("virtio-crypto length of cipher key is too big: %u", | |
57 | info->key_len); | |
58 | return -VIRTIO_CRYPTO_ERR; | |
59 | } | |
60 | /* Get cipher key */ | |
61 | if (info->key_len > 0) { | |
62 | size_t s; | |
63 | DPRINTF("keylen=%" PRIu32 "\n", info->key_len); | |
64 | ||
65 | info->cipher_key = g_malloc(info->key_len); | |
66 | s = iov_to_buf(*iov, num, 0, info->cipher_key, info->key_len); | |
67 | if (unlikely(s != info->key_len)) { | |
68 | virtio_error(vdev, "virtio-crypto cipher key incorrect"); | |
69 | return -EFAULT; | |
70 | } | |
71 | iov_discard_front(iov, &num, info->key_len); | |
72 | *out_num = num; | |
73 | } | |
74 | ||
75 | return 0; | |
76 | } | |
77 | ||
78 | static int64_t | |
79 | virtio_crypto_create_sym_session(VirtIOCrypto *vcrypto, | |
80 | struct virtio_crypto_sym_create_session_req *sess_req, | |
81 | uint32_t queue_id, | |
82 | uint32_t opcode, | |
83 | struct iovec *iov, unsigned int out_num) | |
84 | { | |
85 | VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); | |
86 | CryptoDevBackendSymSessionInfo info; | |
87 | int64_t session_id; | |
88 | int queue_index; | |
89 | uint32_t op_type; | |
90 | Error *local_err = NULL; | |
91 | int ret; | |
92 | ||
93 | memset(&info, 0, sizeof(info)); | |
94 | op_type = ldl_le_p(&sess_req->op_type); | |
95 | info.op_type = op_type; | |
96 | info.op_code = opcode; | |
97 | ||
98 | if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) { | |
99 | ret = virtio_crypto_cipher_session_helper(vdev, &info, | |
100 | &sess_req->u.cipher.para, | |
101 | &iov, &out_num); | |
102 | if (ret < 0) { | |
103 | goto err; | |
104 | } | |
105 | } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { | |
106 | size_t s; | |
107 | /* cipher part */ | |
108 | ret = virtio_crypto_cipher_session_helper(vdev, &info, | |
109 | &sess_req->u.chain.para.cipher_param, | |
110 | &iov, &out_num); | |
111 | if (ret < 0) { | |
112 | goto err; | |
113 | } | |
114 | /* hash part */ | |
115 | info.alg_chain_order = ldl_le_p( | |
116 | &sess_req->u.chain.para.alg_chain_order); | |
117 | info.add_len = ldl_le_p(&sess_req->u.chain.para.aad_len); | |
118 | info.hash_mode = ldl_le_p(&sess_req->u.chain.para.hash_mode); | |
119 | if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_AUTH) { | |
120 | info.hash_alg = ldl_le_p(&sess_req->u.chain.para.u.mac_param.algo); | |
121 | info.auth_key_len = ldl_le_p( | |
122 | &sess_req->u.chain.para.u.mac_param.auth_key_len); | |
123 | info.hash_result_len = ldl_le_p( | |
124 | &sess_req->u.chain.para.u.mac_param.hash_result_len); | |
125 | if (info.auth_key_len > vcrypto->conf.max_auth_key_len) { | |
126 | error_report("virtio-crypto length of auth key is too big: %u", | |
127 | info.auth_key_len); | |
128 | ret = -VIRTIO_CRYPTO_ERR; | |
129 | goto err; | |
130 | } | |
131 | /* get auth key */ | |
132 | if (info.auth_key_len > 0) { | |
133 | DPRINTF("auth_keylen=%" PRIu32 "\n", info.auth_key_len); | |
134 | info.auth_key = g_malloc(info.auth_key_len); | |
135 | s = iov_to_buf(iov, out_num, 0, info.auth_key, | |
136 | info.auth_key_len); | |
137 | if (unlikely(s != info.auth_key_len)) { | |
138 | virtio_error(vdev, | |
139 | "virtio-crypto authenticated key incorrect"); | |
140 | ret = -EFAULT; | |
141 | goto err; | |
142 | } | |
143 | iov_discard_front(&iov, &out_num, info.auth_key_len); | |
144 | } | |
145 | } else if (info.hash_mode == VIRTIO_CRYPTO_SYM_HASH_MODE_PLAIN) { | |
146 | info.hash_alg = ldl_le_p( | |
147 | &sess_req->u.chain.para.u.hash_param.algo); | |
148 | info.hash_result_len = ldl_le_p( | |
149 | &sess_req->u.chain.para.u.hash_param.hash_result_len); | |
150 | } else { | |
151 | /* VIRTIO_CRYPTO_SYM_HASH_MODE_NESTED */ | |
152 | error_report("unsupported hash mode"); | |
153 | ret = -VIRTIO_CRYPTO_NOTSUPP; | |
154 | goto err; | |
155 | } | |
156 | } else { | |
157 | /* VIRTIO_CRYPTO_SYM_OP_NONE */ | |
158 | error_report("unsupported cipher op_type: VIRTIO_CRYPTO_SYM_OP_NONE"); | |
159 | ret = -VIRTIO_CRYPTO_NOTSUPP; | |
160 | goto err; | |
161 | } | |
162 | ||
163 | queue_index = virtio_crypto_vq2q(queue_id); | |
164 | session_id = cryptodev_backend_sym_create_session( | |
165 | vcrypto->cryptodev, | |
166 | &info, queue_index, &local_err); | |
167 | if (session_id >= 0) { | |
168 | DPRINTF("create session_id=%" PRIu64 " successfully\n", | |
169 | session_id); | |
170 | ||
171 | ret = session_id; | |
172 | } else { | |
173 | if (local_err) { | |
174 | error_report_err(local_err); | |
175 | } | |
176 | ret = -VIRTIO_CRYPTO_ERR; | |
177 | } | |
178 | ||
179 | err: | |
180 | g_free(info.cipher_key); | |
181 | g_free(info.auth_key); | |
182 | return ret; | |
183 | } | |
184 | ||
185 | static uint8_t | |
186 | virtio_crypto_handle_close_session(VirtIOCrypto *vcrypto, | |
187 | struct virtio_crypto_destroy_session_req *close_sess_req, | |
188 | uint32_t queue_id) | |
189 | { | |
190 | int ret; | |
191 | uint64_t session_id; | |
192 | uint32_t status; | |
193 | Error *local_err = NULL; | |
194 | ||
195 | session_id = ldq_le_p(&close_sess_req->session_id); | |
196 | DPRINTF("close session, id=%" PRIu64 "\n", session_id); | |
197 | ||
198 | ret = cryptodev_backend_sym_close_session( | |
199 | vcrypto->cryptodev, session_id, queue_id, &local_err); | |
200 | if (ret == 0) { | |
201 | status = VIRTIO_CRYPTO_OK; | |
202 | } else { | |
203 | if (local_err) { | |
204 | error_report_err(local_err); | |
205 | } else { | |
206 | error_report("destroy session failed"); | |
207 | } | |
208 | status = VIRTIO_CRYPTO_ERR; | |
209 | } | |
210 | ||
211 | return status; | |
212 | } | |
213 | ||
214 | static void virtio_crypto_handle_ctrl(VirtIODevice *vdev, VirtQueue *vq) | |
215 | { | |
216 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
217 | struct virtio_crypto_op_ctrl_req ctrl; | |
218 | VirtQueueElement *elem; | |
219 | struct iovec *in_iov; | |
220 | struct iovec *out_iov; | |
221 | unsigned in_num; | |
222 | unsigned out_num; | |
223 | uint32_t queue_id; | |
224 | uint32_t opcode; | |
225 | struct virtio_crypto_session_input input; | |
226 | int64_t session_id; | |
227 | uint8_t status; | |
228 | size_t s; | |
229 | ||
230 | for (;;) { | |
80807477 SH |
231 | g_autofree struct iovec *out_iov_copy = NULL; |
232 | ||
59c360ca GA |
233 | elem = virtqueue_pop(vq, sizeof(VirtQueueElement)); |
234 | if (!elem) { | |
235 | break; | |
236 | } | |
237 | if (elem->out_num < 1 || elem->in_num < 1) { | |
238 | virtio_error(vdev, "virtio-crypto ctrl missing headers"); | |
239 | virtqueue_detach_element(vq, elem, 0); | |
240 | g_free(elem); | |
241 | break; | |
242 | } | |
243 | ||
244 | out_num = elem->out_num; | |
80807477 SH |
245 | out_iov_copy = g_memdup(elem->out_sg, sizeof(out_iov[0]) * out_num); |
246 | out_iov = out_iov_copy; | |
247 | ||
59c360ca GA |
248 | in_num = elem->in_num; |
249 | in_iov = elem->in_sg; | |
80807477 | 250 | |
59c360ca GA |
251 | if (unlikely(iov_to_buf(out_iov, out_num, 0, &ctrl, sizeof(ctrl)) |
252 | != sizeof(ctrl))) { | |
253 | virtio_error(vdev, "virtio-crypto request ctrl_hdr too short"); | |
254 | virtqueue_detach_element(vq, elem, 0); | |
255 | g_free(elem); | |
256 | break; | |
257 | } | |
258 | iov_discard_front(&out_iov, &out_num, sizeof(ctrl)); | |
259 | ||
260 | opcode = ldl_le_p(&ctrl.header.opcode); | |
261 | queue_id = ldl_le_p(&ctrl.header.queue_id); | |
262 | ||
263 | switch (opcode) { | |
264 | case VIRTIO_CRYPTO_CIPHER_CREATE_SESSION: | |
265 | memset(&input, 0, sizeof(input)); | |
266 | session_id = virtio_crypto_create_sym_session(vcrypto, | |
267 | &ctrl.u.sym_create_session, | |
268 | queue_id, opcode, | |
269 | out_iov, out_num); | |
270 | /* Serious errors, need to reset virtio crypto device */ | |
271 | if (session_id == -EFAULT) { | |
272 | virtqueue_detach_element(vq, elem, 0); | |
273 | break; | |
274 | } else if (session_id == -VIRTIO_CRYPTO_NOTSUPP) { | |
275 | stl_le_p(&input.status, VIRTIO_CRYPTO_NOTSUPP); | |
276 | } else if (session_id == -VIRTIO_CRYPTO_ERR) { | |
277 | stl_le_p(&input.status, VIRTIO_CRYPTO_ERR); | |
278 | } else { | |
279 | /* Set the session id */ | |
280 | stq_le_p(&input.session_id, session_id); | |
281 | stl_le_p(&input.status, VIRTIO_CRYPTO_OK); | |
282 | } | |
283 | ||
284 | s = iov_from_buf(in_iov, in_num, 0, &input, sizeof(input)); | |
285 | if (unlikely(s != sizeof(input))) { | |
286 | virtio_error(vdev, "virtio-crypto input incorrect"); | |
287 | virtqueue_detach_element(vq, elem, 0); | |
288 | break; | |
289 | } | |
290 | virtqueue_push(vq, elem, sizeof(input)); | |
291 | virtio_notify(vdev, vq); | |
292 | break; | |
293 | case VIRTIO_CRYPTO_CIPHER_DESTROY_SESSION: | |
294 | case VIRTIO_CRYPTO_HASH_DESTROY_SESSION: | |
295 | case VIRTIO_CRYPTO_MAC_DESTROY_SESSION: | |
296 | case VIRTIO_CRYPTO_AEAD_DESTROY_SESSION: | |
297 | status = virtio_crypto_handle_close_session(vcrypto, | |
298 | &ctrl.u.destroy_session, queue_id); | |
299 | /* The status only occupy one byte, we can directly use it */ | |
300 | s = iov_from_buf(in_iov, in_num, 0, &status, sizeof(status)); | |
301 | if (unlikely(s != sizeof(status))) { | |
302 | virtio_error(vdev, "virtio-crypto status incorrect"); | |
303 | virtqueue_detach_element(vq, elem, 0); | |
304 | break; | |
305 | } | |
306 | virtqueue_push(vq, elem, sizeof(status)); | |
307 | virtio_notify(vdev, vq); | |
308 | break; | |
309 | case VIRTIO_CRYPTO_HASH_CREATE_SESSION: | |
310 | case VIRTIO_CRYPTO_MAC_CREATE_SESSION: | |
311 | case VIRTIO_CRYPTO_AEAD_CREATE_SESSION: | |
312 | default: | |
313 | error_report("virtio-crypto unsupported ctrl opcode: %d", opcode); | |
314 | memset(&input, 0, sizeof(input)); | |
315 | stl_le_p(&input.status, VIRTIO_CRYPTO_NOTSUPP); | |
316 | s = iov_from_buf(in_iov, in_num, 0, &input, sizeof(input)); | |
317 | if (unlikely(s != sizeof(input))) { | |
318 | virtio_error(vdev, "virtio-crypto input incorrect"); | |
319 | virtqueue_detach_element(vq, elem, 0); | |
320 | break; | |
321 | } | |
322 | virtqueue_push(vq, elem, sizeof(input)); | |
323 | virtio_notify(vdev, vq); | |
324 | ||
325 | break; | |
326 | } /* end switch case */ | |
327 | ||
328 | g_free(elem); | |
329 | } /* end for loop */ | |
330 | } | |
331 | ||
04b9b37e GA |
332 | static void virtio_crypto_init_request(VirtIOCrypto *vcrypto, VirtQueue *vq, |
333 | VirtIOCryptoReq *req) | |
334 | { | |
335 | req->vcrypto = vcrypto; | |
336 | req->vq = vq; | |
337 | req->in = NULL; | |
338 | req->in_iov = NULL; | |
339 | req->in_num = 0; | |
340 | req->in_len = 0; | |
341 | req->flags = CRYPTODEV_BACKEND_ALG__MAX; | |
342 | req->u.sym_op_info = NULL; | |
343 | } | |
344 | ||
345 | static void virtio_crypto_free_request(VirtIOCryptoReq *req) | |
346 | { | |
347 | if (req) { | |
348 | if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { | |
02ed3e7c GA |
349 | size_t max_len; |
350 | CryptoDevBackendSymOpInfo *op_info = req->u.sym_op_info; | |
351 | ||
352 | max_len = op_info->iv_len + | |
353 | op_info->aad_len + | |
354 | op_info->src_len + | |
355 | op_info->dst_len + | |
356 | op_info->digest_result_len; | |
357 | ||
358 | /* Zeroize and free request data structure */ | |
359 | memset(op_info, 0, sizeof(*op_info) + max_len); | |
360 | g_free(op_info); | |
04b9b37e GA |
361 | } |
362 | g_free(req); | |
363 | } | |
364 | } | |
365 | ||
366 | static void | |
367 | virtio_crypto_sym_input_data_helper(VirtIODevice *vdev, | |
368 | VirtIOCryptoReq *req, | |
369 | uint32_t status, | |
370 | CryptoDevBackendSymOpInfo *sym_op_info) | |
371 | { | |
372 | size_t s, len; | |
373 | ||
374 | if (status != VIRTIO_CRYPTO_OK) { | |
375 | return; | |
376 | } | |
377 | ||
c159a4d1 | 378 | len = sym_op_info->src_len; |
04b9b37e GA |
379 | /* Save the cipher result */ |
380 | s = iov_from_buf(req->in_iov, req->in_num, 0, sym_op_info->dst, len); | |
381 | if (s != len) { | |
382 | virtio_error(vdev, "virtio-crypto dest data incorrect"); | |
383 | return; | |
384 | } | |
385 | ||
386 | iov_discard_front(&req->in_iov, &req->in_num, len); | |
387 | ||
388 | if (sym_op_info->op_type == | |
389 | VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { | |
390 | /* Save the digest result */ | |
391 | s = iov_from_buf(req->in_iov, req->in_num, 0, | |
392 | sym_op_info->digest_result, | |
393 | sym_op_info->digest_result_len); | |
394 | if (s != sym_op_info->digest_result_len) { | |
395 | virtio_error(vdev, "virtio-crypto digest result incorrect"); | |
396 | } | |
397 | } | |
398 | } | |
399 | ||
400 | static void virtio_crypto_req_complete(VirtIOCryptoReq *req, uint8_t status) | |
401 | { | |
402 | VirtIOCrypto *vcrypto = req->vcrypto; | |
403 | VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); | |
404 | ||
405 | if (req->flags == CRYPTODEV_BACKEND_ALG_SYM) { | |
406 | virtio_crypto_sym_input_data_helper(vdev, req, status, | |
407 | req->u.sym_op_info); | |
408 | } | |
409 | stb_p(&req->in->status, status); | |
410 | virtqueue_push(req->vq, &req->elem, req->in_len); | |
411 | virtio_notify(vdev, req->vq); | |
412 | } | |
413 | ||
414 | static VirtIOCryptoReq * | |
415 | virtio_crypto_get_request(VirtIOCrypto *s, VirtQueue *vq) | |
416 | { | |
417 | VirtIOCryptoReq *req = virtqueue_pop(vq, sizeof(VirtIOCryptoReq)); | |
418 | ||
419 | if (req) { | |
420 | virtio_crypto_init_request(s, vq, req); | |
421 | } | |
422 | return req; | |
423 | } | |
424 | ||
425 | static CryptoDevBackendSymOpInfo * | |
426 | virtio_crypto_sym_op_helper(VirtIODevice *vdev, | |
427 | struct virtio_crypto_cipher_para *cipher_para, | |
428 | struct virtio_crypto_alg_chain_data_para *alg_chain_para, | |
429 | struct iovec *iov, unsigned int out_num) | |
430 | { | |
431 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
432 | CryptoDevBackendSymOpInfo *op_info; | |
433 | uint32_t src_len = 0, dst_len = 0; | |
434 | uint32_t iv_len = 0; | |
435 | uint32_t aad_len = 0, hash_result_len = 0; | |
436 | uint32_t hash_start_src_offset = 0, len_to_hash = 0; | |
437 | uint32_t cipher_start_src_offset = 0, len_to_cipher = 0; | |
438 | ||
a08aaff8 | 439 | uint64_t max_len, curr_size = 0; |
04b9b37e GA |
440 | size_t s; |
441 | ||
442 | /* Plain cipher */ | |
443 | if (cipher_para) { | |
444 | iv_len = ldl_le_p(&cipher_para->iv_len); | |
445 | src_len = ldl_le_p(&cipher_para->src_data_len); | |
446 | dst_len = ldl_le_p(&cipher_para->dst_data_len); | |
447 | } else if (alg_chain_para) { /* Algorithm chain */ | |
448 | iv_len = ldl_le_p(&alg_chain_para->iv_len); | |
449 | src_len = ldl_le_p(&alg_chain_para->src_data_len); | |
450 | dst_len = ldl_le_p(&alg_chain_para->dst_data_len); | |
451 | ||
452 | aad_len = ldl_le_p(&alg_chain_para->aad_len); | |
453 | hash_result_len = ldl_le_p(&alg_chain_para->hash_result_len); | |
454 | hash_start_src_offset = ldl_le_p( | |
455 | &alg_chain_para->hash_start_src_offset); | |
456 | cipher_start_src_offset = ldl_le_p( | |
457 | &alg_chain_para->cipher_start_src_offset); | |
458 | len_to_cipher = ldl_le_p(&alg_chain_para->len_to_cipher); | |
459 | len_to_hash = ldl_le_p(&alg_chain_para->len_to_hash); | |
460 | } else { | |
461 | return NULL; | |
462 | } | |
463 | ||
a08aaff8 | 464 | max_len = (uint64_t)iv_len + aad_len + src_len + dst_len + hash_result_len; |
04b9b37e GA |
465 | if (unlikely(max_len > vcrypto->conf.max_size)) { |
466 | virtio_error(vdev, "virtio-crypto too big length"); | |
467 | return NULL; | |
468 | } | |
469 | ||
470 | op_info = g_malloc0(sizeof(CryptoDevBackendSymOpInfo) + max_len); | |
471 | op_info->iv_len = iv_len; | |
472 | op_info->src_len = src_len; | |
473 | op_info->dst_len = dst_len; | |
474 | op_info->aad_len = aad_len; | |
475 | op_info->digest_result_len = hash_result_len; | |
476 | op_info->hash_start_src_offset = hash_start_src_offset; | |
477 | op_info->len_to_hash = len_to_hash; | |
478 | op_info->cipher_start_src_offset = cipher_start_src_offset; | |
479 | op_info->len_to_cipher = len_to_cipher; | |
480 | /* Handle the initilization vector */ | |
481 | if (op_info->iv_len > 0) { | |
482 | DPRINTF("iv_len=%" PRIu32 "\n", op_info->iv_len); | |
483 | op_info->iv = op_info->data + curr_size; | |
484 | ||
485 | s = iov_to_buf(iov, out_num, 0, op_info->iv, op_info->iv_len); | |
486 | if (unlikely(s != op_info->iv_len)) { | |
487 | virtio_error(vdev, "virtio-crypto iv incorrect"); | |
488 | goto err; | |
489 | } | |
490 | iov_discard_front(&iov, &out_num, op_info->iv_len); | |
491 | curr_size += op_info->iv_len; | |
492 | } | |
493 | ||
494 | /* Handle additional authentication data if exists */ | |
495 | if (op_info->aad_len > 0) { | |
496 | DPRINTF("aad_len=%" PRIu32 "\n", op_info->aad_len); | |
497 | op_info->aad_data = op_info->data + curr_size; | |
498 | ||
499 | s = iov_to_buf(iov, out_num, 0, op_info->aad_data, op_info->aad_len); | |
500 | if (unlikely(s != op_info->aad_len)) { | |
501 | virtio_error(vdev, "virtio-crypto additional auth data incorrect"); | |
502 | goto err; | |
503 | } | |
504 | iov_discard_front(&iov, &out_num, op_info->aad_len); | |
505 | ||
506 | curr_size += op_info->aad_len; | |
507 | } | |
508 | ||
509 | /* Handle the source data */ | |
510 | if (op_info->src_len > 0) { | |
511 | DPRINTF("src_len=%" PRIu32 "\n", op_info->src_len); | |
512 | op_info->src = op_info->data + curr_size; | |
513 | ||
514 | s = iov_to_buf(iov, out_num, 0, op_info->src, op_info->src_len); | |
515 | if (unlikely(s != op_info->src_len)) { | |
516 | virtio_error(vdev, "virtio-crypto source data incorrect"); | |
517 | goto err; | |
518 | } | |
519 | iov_discard_front(&iov, &out_num, op_info->src_len); | |
520 | ||
521 | curr_size += op_info->src_len; | |
522 | } | |
523 | ||
524 | /* Handle the destination data */ | |
525 | op_info->dst = op_info->data + curr_size; | |
526 | curr_size += op_info->dst_len; | |
527 | ||
528 | DPRINTF("dst_len=%" PRIu32 "\n", op_info->dst_len); | |
529 | ||
530 | /* Handle the hash digest result */ | |
531 | if (hash_result_len > 0) { | |
532 | DPRINTF("hash_result_len=%" PRIu32 "\n", hash_result_len); | |
533 | op_info->digest_result = op_info->data + curr_size; | |
534 | } | |
535 | ||
536 | return op_info; | |
537 | ||
538 | err: | |
539 | g_free(op_info); | |
540 | return NULL; | |
541 | } | |
542 | ||
543 | static int | |
544 | virtio_crypto_handle_sym_req(VirtIOCrypto *vcrypto, | |
545 | struct virtio_crypto_sym_data_req *req, | |
546 | CryptoDevBackendSymOpInfo **sym_op_info, | |
547 | struct iovec *iov, unsigned int out_num) | |
548 | { | |
549 | VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); | |
550 | uint32_t op_type; | |
551 | CryptoDevBackendSymOpInfo *op_info; | |
552 | ||
553 | op_type = ldl_le_p(&req->op_type); | |
554 | ||
555 | if (op_type == VIRTIO_CRYPTO_SYM_OP_CIPHER) { | |
556 | op_info = virtio_crypto_sym_op_helper(vdev, &req->u.cipher.para, | |
557 | NULL, iov, out_num); | |
558 | if (!op_info) { | |
559 | return -EFAULT; | |
560 | } | |
561 | op_info->op_type = op_type; | |
562 | } else if (op_type == VIRTIO_CRYPTO_SYM_OP_ALGORITHM_CHAINING) { | |
563 | op_info = virtio_crypto_sym_op_helper(vdev, NULL, | |
564 | &req->u.chain.para, | |
565 | iov, out_num); | |
566 | if (!op_info) { | |
567 | return -EFAULT; | |
568 | } | |
569 | op_info->op_type = op_type; | |
570 | } else { | |
571 | /* VIRTIO_CRYPTO_SYM_OP_NONE */ | |
572 | error_report("virtio-crypto unsupported cipher type"); | |
573 | return -VIRTIO_CRYPTO_NOTSUPP; | |
574 | } | |
575 | ||
576 | *sym_op_info = op_info; | |
577 | ||
578 | return 0; | |
579 | } | |
580 | ||
581 | static int | |
582 | virtio_crypto_handle_request(VirtIOCryptoReq *request) | |
583 | { | |
584 | VirtIOCrypto *vcrypto = request->vcrypto; | |
585 | VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); | |
586 | VirtQueueElement *elem = &request->elem; | |
587 | int queue_index = virtio_crypto_vq2q(virtio_get_queue_index(request->vq)); | |
588 | struct virtio_crypto_op_data_req req; | |
589 | int ret; | |
80807477 SH |
590 | g_autofree struct iovec *in_iov_copy = NULL; |
591 | g_autofree struct iovec *out_iov_copy = NULL; | |
04b9b37e GA |
592 | struct iovec *in_iov; |
593 | struct iovec *out_iov; | |
594 | unsigned in_num; | |
595 | unsigned out_num; | |
596 | uint32_t opcode; | |
597 | uint8_t status = VIRTIO_CRYPTO_ERR; | |
598 | uint64_t session_id; | |
599 | CryptoDevBackendSymOpInfo *sym_op_info = NULL; | |
600 | Error *local_err = NULL; | |
601 | ||
602 | if (elem->out_num < 1 || elem->in_num < 1) { | |
603 | virtio_error(vdev, "virtio-crypto dataq missing headers"); | |
604 | return -1; | |
605 | } | |
606 | ||
607 | out_num = elem->out_num; | |
80807477 SH |
608 | out_iov_copy = g_memdup(elem->out_sg, sizeof(out_iov[0]) * out_num); |
609 | out_iov = out_iov_copy; | |
610 | ||
04b9b37e | 611 | in_num = elem->in_num; |
80807477 SH |
612 | in_iov_copy = g_memdup(elem->in_sg, sizeof(in_iov[0]) * in_num); |
613 | in_iov = in_iov_copy; | |
614 | ||
04b9b37e GA |
615 | if (unlikely(iov_to_buf(out_iov, out_num, 0, &req, sizeof(req)) |
616 | != sizeof(req))) { | |
617 | virtio_error(vdev, "virtio-crypto request outhdr too short"); | |
618 | return -1; | |
619 | } | |
620 | iov_discard_front(&out_iov, &out_num, sizeof(req)); | |
621 | ||
622 | if (in_iov[in_num - 1].iov_len < | |
623 | sizeof(struct virtio_crypto_inhdr)) { | |
624 | virtio_error(vdev, "virtio-crypto request inhdr too short"); | |
625 | return -1; | |
626 | } | |
627 | /* We always touch the last byte, so just see how big in_iov is. */ | |
628 | request->in_len = iov_size(in_iov, in_num); | |
629 | request->in = (void *)in_iov[in_num - 1].iov_base | |
630 | + in_iov[in_num - 1].iov_len | |
631 | - sizeof(struct virtio_crypto_inhdr); | |
632 | iov_discard_back(in_iov, &in_num, sizeof(struct virtio_crypto_inhdr)); | |
633 | ||
634 | /* | |
635 | * The length of operation result, including dest_data | |
636 | * and digest_result if exists. | |
637 | */ | |
638 | request->in_num = in_num; | |
639 | request->in_iov = in_iov; | |
640 | ||
641 | opcode = ldl_le_p(&req.header.opcode); | |
642 | session_id = ldq_le_p(&req.header.session_id); | |
643 | ||
644 | switch (opcode) { | |
645 | case VIRTIO_CRYPTO_CIPHER_ENCRYPT: | |
646 | case VIRTIO_CRYPTO_CIPHER_DECRYPT: | |
647 | ret = virtio_crypto_handle_sym_req(vcrypto, | |
648 | &req.u.sym_req, | |
649 | &sym_op_info, | |
650 | out_iov, out_num); | |
651 | /* Serious errors, need to reset virtio crypto device */ | |
652 | if (ret == -EFAULT) { | |
653 | return -1; | |
654 | } else if (ret == -VIRTIO_CRYPTO_NOTSUPP) { | |
655 | virtio_crypto_req_complete(request, VIRTIO_CRYPTO_NOTSUPP); | |
656 | virtio_crypto_free_request(request); | |
657 | } else { | |
658 | sym_op_info->session_id = session_id; | |
659 | ||
660 | /* Set request's parameter */ | |
661 | request->flags = CRYPTODEV_BACKEND_ALG_SYM; | |
662 | request->u.sym_op_info = sym_op_info; | |
d6634ac0 GA |
663 | ret = cryptodev_backend_crypto_operation(vcrypto->cryptodev, |
664 | request, queue_index, &local_err); | |
04b9b37e | 665 | if (ret < 0) { |
d6634ac0 | 666 | status = -ret; |
04b9b37e GA |
667 | if (local_err) { |
668 | error_report_err(local_err); | |
669 | } | |
d6634ac0 GA |
670 | } else { /* ret == VIRTIO_CRYPTO_OK */ |
671 | status = ret; | |
04b9b37e GA |
672 | } |
673 | virtio_crypto_req_complete(request, status); | |
674 | virtio_crypto_free_request(request); | |
675 | } | |
676 | break; | |
677 | case VIRTIO_CRYPTO_HASH: | |
678 | case VIRTIO_CRYPTO_MAC: | |
679 | case VIRTIO_CRYPTO_AEAD_ENCRYPT: | |
680 | case VIRTIO_CRYPTO_AEAD_DECRYPT: | |
681 | default: | |
682 | error_report("virtio-crypto unsupported dataq opcode: %u", | |
683 | opcode); | |
684 | virtio_crypto_req_complete(request, VIRTIO_CRYPTO_NOTSUPP); | |
685 | virtio_crypto_free_request(request); | |
686 | } | |
687 | ||
688 | return 0; | |
689 | } | |
690 | ||
691 | static void virtio_crypto_handle_dataq(VirtIODevice *vdev, VirtQueue *vq) | |
692 | { | |
693 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
694 | VirtIOCryptoReq *req; | |
695 | ||
696 | while ((req = virtio_crypto_get_request(vcrypto, vq))) { | |
697 | if (virtio_crypto_handle_request(req) < 0) { | |
698 | virtqueue_detach_element(req->vq, &req->elem, 0); | |
699 | virtio_crypto_free_request(req); | |
700 | break; | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
20cb2ffd GA |
705 | static void virtio_crypto_dataq_bh(void *opaque) |
706 | { | |
707 | VirtIOCryptoQueue *q = opaque; | |
708 | VirtIOCrypto *vcrypto = q->vcrypto; | |
709 | VirtIODevice *vdev = VIRTIO_DEVICE(vcrypto); | |
710 | ||
711 | /* This happens when device was stopped but BH wasn't. */ | |
712 | if (!vdev->vm_running) { | |
713 | return; | |
714 | } | |
715 | ||
716 | /* Just in case the driver is not ready on more */ | |
717 | if (unlikely(!(vdev->status & VIRTIO_CONFIG_S_DRIVER_OK))) { | |
718 | return; | |
719 | } | |
720 | ||
600f5ce3 SH |
721 | for (;;) { |
722 | virtio_crypto_handle_dataq(vdev, q->dataq); | |
723 | virtio_queue_set_notification(q->dataq, 1); | |
724 | ||
725 | /* Are we done or did the guest add more buffers? */ | |
726 | if (virtio_queue_empty(q->dataq)) { | |
727 | break; | |
728 | } | |
729 | ||
730 | virtio_queue_set_notification(q->dataq, 0); | |
731 | } | |
20cb2ffd GA |
732 | } |
733 | ||
734 | static void | |
735 | virtio_crypto_handle_dataq_bh(VirtIODevice *vdev, VirtQueue *vq) | |
736 | { | |
737 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
738 | VirtIOCryptoQueue *q = | |
739 | &vcrypto->vqs[virtio_crypto_vq2q(virtio_get_queue_index(vq))]; | |
740 | ||
741 | /* This happens when device was stopped but VCPU wasn't. */ | |
742 | if (!vdev->vm_running) { | |
743 | return; | |
744 | } | |
745 | virtio_queue_set_notification(vq, 0); | |
746 | qemu_bh_schedule(q->dataq_bh); | |
747 | } | |
748 | ||
ea4d8ac2 GA |
749 | static uint64_t virtio_crypto_get_features(VirtIODevice *vdev, |
750 | uint64_t features, | |
751 | Error **errp) | |
752 | { | |
753 | return features; | |
754 | } | |
755 | ||
756 | static void virtio_crypto_reset(VirtIODevice *vdev) | |
757 | { | |
758 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
759 | /* multiqueue is disabled by default */ | |
760 | vcrypto->curr_queues = 1; | |
6138dbda | 761 | if (!cryptodev_backend_is_ready(vcrypto->cryptodev)) { |
ea4d8ac2 GA |
762 | vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY; |
763 | } else { | |
764 | vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY; | |
765 | } | |
766 | } | |
767 | ||
050652d9 GA |
768 | static void virtio_crypto_init_config(VirtIODevice *vdev) |
769 | { | |
770 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
771 | ||
772 | vcrypto->conf.crypto_services = | |
773 | vcrypto->conf.cryptodev->conf.crypto_services; | |
774 | vcrypto->conf.cipher_algo_l = | |
775 | vcrypto->conf.cryptodev->conf.cipher_algo_l; | |
776 | vcrypto->conf.cipher_algo_h = | |
777 | vcrypto->conf.cryptodev->conf.cipher_algo_h; | |
778 | vcrypto->conf.hash_algo = vcrypto->conf.cryptodev->conf.hash_algo; | |
779 | vcrypto->conf.mac_algo_l = vcrypto->conf.cryptodev->conf.mac_algo_l; | |
780 | vcrypto->conf.mac_algo_h = vcrypto->conf.cryptodev->conf.mac_algo_h; | |
781 | vcrypto->conf.aead_algo = vcrypto->conf.cryptodev->conf.aead_algo; | |
782 | vcrypto->conf.max_cipher_key_len = | |
783 | vcrypto->conf.cryptodev->conf.max_cipher_key_len; | |
784 | vcrypto->conf.max_auth_key_len = | |
785 | vcrypto->conf.cryptodev->conf.max_auth_key_len; | |
786 | vcrypto->conf.max_size = vcrypto->conf.cryptodev->conf.max_size; | |
787 | } | |
788 | ||
ea4d8ac2 GA |
789 | static void virtio_crypto_device_realize(DeviceState *dev, Error **errp) |
790 | { | |
791 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); | |
792 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev); | |
793 | int i; | |
794 | ||
795 | vcrypto->cryptodev = vcrypto->conf.cryptodev; | |
796 | if (vcrypto->cryptodev == NULL) { | |
797 | error_setg(errp, "'cryptodev' parameter expects a valid object"); | |
798 | return; | |
aa8f057e | 799 | } else if (cryptodev_backend_is_used(vcrypto->cryptodev)) { |
7a309cc9 MA |
800 | error_setg(errp, "can't use already used cryptodev backend: %s", |
801 | object_get_canonical_path_component(OBJECT(vcrypto->conf.cryptodev))); | |
aa8f057e | 802 | return; |
ea4d8ac2 GA |
803 | } |
804 | ||
805 | vcrypto->max_queues = MAX(vcrypto->cryptodev->conf.peers.queues, 1); | |
806 | if (vcrypto->max_queues + 1 > VIRTIO_QUEUE_MAX) { | |
807 | error_setg(errp, "Invalid number of queues (= %" PRIu32 "), " | |
b12227af | 808 | "must be a positive integer less than %d.", |
ea4d8ac2 GA |
809 | vcrypto->max_queues, VIRTIO_QUEUE_MAX); |
810 | return; | |
811 | } | |
812 | ||
813 | virtio_init(vdev, "virtio-crypto", VIRTIO_ID_CRYPTO, vcrypto->config_size); | |
814 | vcrypto->curr_queues = 1; | |
20cb2ffd | 815 | vcrypto->vqs = g_malloc0(sizeof(VirtIOCryptoQueue) * vcrypto->max_queues); |
ea4d8ac2 | 816 | for (i = 0; i < vcrypto->max_queues; i++) { |
20cb2ffd GA |
817 | vcrypto->vqs[i].dataq = |
818 | virtio_add_queue(vdev, 1024, virtio_crypto_handle_dataq_bh); | |
819 | vcrypto->vqs[i].dataq_bh = | |
820 | qemu_bh_new(virtio_crypto_dataq_bh, &vcrypto->vqs[i]); | |
821 | vcrypto->vqs[i].vcrypto = vcrypto; | |
ea4d8ac2 GA |
822 | } |
823 | ||
59c360ca | 824 | vcrypto->ctrl_vq = virtio_add_queue(vdev, 64, virtio_crypto_handle_ctrl); |
6138dbda | 825 | if (!cryptodev_backend_is_ready(vcrypto->cryptodev)) { |
ea4d8ac2 GA |
826 | vcrypto->status &= ~VIRTIO_CRYPTO_S_HW_READY; |
827 | } else { | |
828 | vcrypto->status |= VIRTIO_CRYPTO_S_HW_READY; | |
829 | } | |
050652d9 GA |
830 | |
831 | virtio_crypto_init_config(vdev); | |
46fd1705 | 832 | cryptodev_backend_set_used(vcrypto->cryptodev, true); |
ea4d8ac2 GA |
833 | } |
834 | ||
b69c3c21 | 835 | static void virtio_crypto_device_unrealize(DeviceState *dev) |
ea4d8ac2 GA |
836 | { |
837 | VirtIODevice *vdev = VIRTIO_DEVICE(dev); | |
20cb2ffd GA |
838 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(dev); |
839 | VirtIOCryptoQueue *q; | |
840 | int i, max_queues; | |
841 | ||
842 | max_queues = vcrypto->multiqueue ? vcrypto->max_queues : 1; | |
843 | for (i = 0; i < max_queues; i++) { | |
d56e1c82 | 844 | virtio_delete_queue(vcrypto->vqs[i].dataq); |
20cb2ffd GA |
845 | q = &vcrypto->vqs[i]; |
846 | qemu_bh_delete(q->dataq_bh); | |
847 | } | |
848 | ||
849 | g_free(vcrypto->vqs); | |
d56e1c82 | 850 | virtio_delete_queue(vcrypto->ctrl_vq); |
ea4d8ac2 GA |
851 | |
852 | virtio_cleanup(vdev); | |
46fd1705 | 853 | cryptodev_backend_set_used(vcrypto->cryptodev, false); |
ea4d8ac2 GA |
854 | } |
855 | ||
856 | static const VMStateDescription vmstate_virtio_crypto = { | |
857 | .name = "virtio-crypto", | |
6e724d9d | 858 | .unmigratable = 1, |
ea4d8ac2 GA |
859 | .minimum_version_id = VIRTIO_CRYPTO_VM_VERSION, |
860 | .version_id = VIRTIO_CRYPTO_VM_VERSION, | |
861 | .fields = (VMStateField[]) { | |
862 | VMSTATE_VIRTIO_DEVICE, | |
863 | VMSTATE_END_OF_LIST() | |
864 | }, | |
865 | }; | |
866 | ||
867 | static Property virtio_crypto_properties[] = { | |
aa8f057e FZ |
868 | DEFINE_PROP_LINK("cryptodev", VirtIOCrypto, conf.cryptodev, |
869 | TYPE_CRYPTODEV_BACKEND, CryptoDevBackend *), | |
ea4d8ac2 GA |
870 | DEFINE_PROP_END_OF_LIST(), |
871 | }; | |
872 | ||
873 | static void virtio_crypto_get_config(VirtIODevice *vdev, uint8_t *config) | |
874 | { | |
050652d9 | 875 | VirtIOCrypto *c = VIRTIO_CRYPTO(vdev); |
9730280d | 876 | struct virtio_crypto_config crypto_cfg = {}; |
050652d9 GA |
877 | |
878 | /* | |
879 | * Virtio-crypto device conforms to VIRTIO 1.0 which is always LE, | |
880 | * so we can use LE accessors directly. | |
881 | */ | |
882 | stl_le_p(&crypto_cfg.status, c->status); | |
883 | stl_le_p(&crypto_cfg.max_dataqueues, c->max_queues); | |
884 | stl_le_p(&crypto_cfg.crypto_services, c->conf.crypto_services); | |
885 | stl_le_p(&crypto_cfg.cipher_algo_l, c->conf.cipher_algo_l); | |
886 | stl_le_p(&crypto_cfg.cipher_algo_h, c->conf.cipher_algo_h); | |
887 | stl_le_p(&crypto_cfg.hash_algo, c->conf.hash_algo); | |
888 | stl_le_p(&crypto_cfg.mac_algo_l, c->conf.mac_algo_l); | |
889 | stl_le_p(&crypto_cfg.mac_algo_h, c->conf.mac_algo_h); | |
890 | stl_le_p(&crypto_cfg.aead_algo, c->conf.aead_algo); | |
891 | stl_le_p(&crypto_cfg.max_cipher_key_len, c->conf.max_cipher_key_len); | |
892 | stl_le_p(&crypto_cfg.max_auth_key_len, c->conf.max_auth_key_len); | |
893 | stq_le_p(&crypto_cfg.max_size, c->conf.max_size); | |
894 | ||
895 | memcpy(config, &crypto_cfg, c->config_size); | |
ea4d8ac2 GA |
896 | } |
897 | ||
5da73dab GA |
898 | static bool virtio_crypto_started(VirtIOCrypto *c, uint8_t status) |
899 | { | |
900 | VirtIODevice *vdev = VIRTIO_DEVICE(c); | |
901 | return (status & VIRTIO_CONFIG_S_DRIVER_OK) && | |
902 | (c->status & VIRTIO_CRYPTO_S_HW_READY) && vdev->vm_running; | |
903 | } | |
904 | ||
905 | static void virtio_crypto_vhost_status(VirtIOCrypto *c, uint8_t status) | |
906 | { | |
907 | VirtIODevice *vdev = VIRTIO_DEVICE(c); | |
908 | int queues = c->multiqueue ? c->max_queues : 1; | |
909 | CryptoDevBackend *b = c->cryptodev; | |
910 | CryptoDevBackendClient *cc = b->conf.peers.ccs[0]; | |
911 | ||
912 | if (!cryptodev_get_vhost(cc, b, 0)) { | |
913 | return; | |
914 | } | |
915 | ||
916 | if ((virtio_crypto_started(c, status)) == !!c->vhost_started) { | |
917 | return; | |
918 | } | |
919 | ||
920 | if (!c->vhost_started) { | |
921 | int r; | |
922 | ||
923 | c->vhost_started = 1; | |
924 | r = cryptodev_vhost_start(vdev, queues); | |
925 | if (r < 0) { | |
926 | error_report("unable to start vhost crypto: %d: " | |
927 | "falling back on userspace virtio", -r); | |
928 | c->vhost_started = 0; | |
929 | } | |
930 | } else { | |
931 | cryptodev_vhost_stop(vdev, queues); | |
932 | c->vhost_started = 0; | |
933 | } | |
934 | } | |
935 | ||
936 | static void virtio_crypto_set_status(VirtIODevice *vdev, uint8_t status) | |
937 | { | |
938 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
939 | ||
940 | virtio_crypto_vhost_status(vcrypto, status); | |
941 | } | |
942 | ||
943 | static void virtio_crypto_guest_notifier_mask(VirtIODevice *vdev, int idx, | |
944 | bool mask) | |
945 | { | |
946 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
947 | int queue = virtio_crypto_vq2q(idx); | |
948 | ||
949 | assert(vcrypto->vhost_started); | |
950 | ||
951 | cryptodev_vhost_virtqueue_mask(vdev, queue, idx, mask); | |
952 | } | |
953 | ||
954 | static bool virtio_crypto_guest_notifier_pending(VirtIODevice *vdev, int idx) | |
955 | { | |
956 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(vdev); | |
957 | int queue = virtio_crypto_vq2q(idx); | |
958 | ||
959 | assert(vcrypto->vhost_started); | |
960 | ||
961 | return cryptodev_vhost_virtqueue_pending(vdev, queue, idx); | |
962 | } | |
963 | ||
ea4d8ac2 GA |
964 | static void virtio_crypto_class_init(ObjectClass *klass, void *data) |
965 | { | |
966 | DeviceClass *dc = DEVICE_CLASS(klass); | |
967 | VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass); | |
968 | ||
4f67d30b | 969 | device_class_set_props(dc, virtio_crypto_properties); |
ea4d8ac2 GA |
970 | dc->vmsd = &vmstate_virtio_crypto; |
971 | set_bit(DEVICE_CATEGORY_MISC, dc->categories); | |
972 | vdc->realize = virtio_crypto_device_realize; | |
973 | vdc->unrealize = virtio_crypto_device_unrealize; | |
974 | vdc->get_config = virtio_crypto_get_config; | |
975 | vdc->get_features = virtio_crypto_get_features; | |
976 | vdc->reset = virtio_crypto_reset; | |
5da73dab GA |
977 | vdc->set_status = virtio_crypto_set_status; |
978 | vdc->guest_notifier_mask = virtio_crypto_guest_notifier_mask; | |
979 | vdc->guest_notifier_pending = virtio_crypto_guest_notifier_pending; | |
ea4d8ac2 GA |
980 | } |
981 | ||
982 | static void virtio_crypto_instance_init(Object *obj) | |
983 | { | |
984 | VirtIOCrypto *vcrypto = VIRTIO_CRYPTO(obj); | |
985 | ||
986 | /* | |
987 | * The default config_size is sizeof(struct virtio_crypto_config). | |
988 | * Can be overriden with virtio_crypto_set_config_size. | |
989 | */ | |
990 | vcrypto->config_size = sizeof(struct virtio_crypto_config); | |
ea4d8ac2 GA |
991 | } |
992 | ||
993 | static const TypeInfo virtio_crypto_info = { | |
994 | .name = TYPE_VIRTIO_CRYPTO, | |
995 | .parent = TYPE_VIRTIO_DEVICE, | |
996 | .instance_size = sizeof(VirtIOCrypto), | |
997 | .instance_init = virtio_crypto_instance_init, | |
998 | .class_init = virtio_crypto_class_init, | |
999 | }; | |
1000 | ||
1001 | static void virtio_register_types(void) | |
1002 | { | |
1003 | type_register_static(&virtio_crypto_info); | |
1004 | } | |
1005 | ||
1006 | type_init(virtio_register_types) |