Blame view
crypto/cryptd.c
24.9 KB
124b53d02 [CRYPTO] cryptd: ... |
1 2 3 4 5 |
/* * Software async crypto daemon. * * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> * |
298c926c6 crypto: cryptd - ... |
6 7 8 9 10 11 12 |
* Added AEAD support to cryptd. * Authors: Tadeusz Struk (tadeusz.struk@intel.com) * Adrian Hoban <adrian.hoban@intel.com> * Gabriele Paoloni <gabriele.paoloni@intel.com> * Aidan O'Mahony (aidan.o.mahony@intel.com) * Copyright (c) 2010, Intel Corporation. * |
124b53d02 [CRYPTO] cryptd: ... |
13 14 15 16 17 18 19 20 |
* This program is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License as published by the Free * Software Foundation; either version 2 of the License, or (at your option) * any later version. * */ #include <crypto/algapi.h> |
18e33e6d5 crypto: hash - Mo... |
21 |
#include <crypto/internal/hash.h> |
298c926c6 crypto: cryptd - ... |
22 |
#include <crypto/internal/aead.h> |
1cac2cbc7 crypto: cryptd - ... |
23 |
#include <crypto/cryptd.h> |
254eff771 crypto: cryptd - ... |
24 |
#include <crypto/crypto_wq.h> |
124b53d02 [CRYPTO] cryptd: ... |
25 26 27 |
#include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> |
124b53d02 [CRYPTO] cryptd: ... |
28 29 |
#include <linux/list.h> #include <linux/module.h> |
124b53d02 [CRYPTO] cryptd: ... |
30 31 32 |
#include <linux/scatterlist.h> #include <linux/sched.h> #include <linux/slab.h> |
124b53d02 [CRYPTO] cryptd: ... |
33 |
|
254eff771 crypto: cryptd - ... |
34 |
#define CRYPTD_MAX_CPU_QLEN 100 |
124b53d02 [CRYPTO] cryptd: ... |
35 |
|
254eff771 crypto: cryptd - ... |
36 |
struct cryptd_cpu_queue { |
124b53d02 [CRYPTO] cryptd: ... |
37 |
struct crypto_queue queue; |
254eff771 crypto: cryptd - ... |
38 39 40 41 |
struct work_struct work; }; struct cryptd_queue { |
a29d8b8e2 percpu: add __per... |
42 |
struct cryptd_cpu_queue __percpu *cpu_queue; |
124b53d02 [CRYPTO] cryptd: ... |
43 44 45 46 |
}; struct cryptd_instance_ctx { struct crypto_spawn spawn; |
254eff771 crypto: cryptd - ... |
47 |
struct cryptd_queue *queue; |
124b53d02 [CRYPTO] cryptd: ... |
48 |
}; |
46309d893 crypto: cryptd - ... |
49 50 51 52 |
struct hashd_instance_ctx { struct crypto_shash_spawn spawn; struct cryptd_queue *queue; }; |
298c926c6 crypto: cryptd - ... |
53 54 55 56 |
struct aead_instance_ctx { struct crypto_aead_spawn aead_spawn; struct cryptd_queue *queue; }; |
124b53d02 [CRYPTO] cryptd: ... |
57 58 59 60 61 62 63 |
struct cryptd_blkcipher_ctx { struct crypto_blkcipher *child; }; struct cryptd_blkcipher_request_ctx { crypto_completion_t complete; }; |
b8a28251c [CRYPTO] cryptd: ... |
64 |
struct cryptd_hash_ctx { |
46309d893 crypto: cryptd - ... |
65 |
struct crypto_shash *child; |
b8a28251c [CRYPTO] cryptd: ... |
66 67 68 69 |
}; struct cryptd_hash_request_ctx { crypto_completion_t complete; |
46309d893 crypto: cryptd - ... |
70 |
struct shash_desc desc; |
b8a28251c [CRYPTO] cryptd: ... |
71 |
}; |
124b53d02 [CRYPTO] cryptd: ... |
72 |
|
298c926c6 crypto: cryptd - ... |
73 74 75 76 77 78 79 |
struct cryptd_aead_ctx { struct crypto_aead *child; }; struct cryptd_aead_request_ctx { crypto_completion_t complete; }; |
254eff771 crypto: cryptd - ... |
80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 |
static void cryptd_queue_worker(struct work_struct *work); static int cryptd_init_queue(struct cryptd_queue *queue, unsigned int max_cpu_qlen) { int cpu; struct cryptd_cpu_queue *cpu_queue; queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); if (!queue->cpu_queue) return -ENOMEM; for_each_possible_cpu(cpu) { cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); INIT_WORK(&cpu_queue->work, cryptd_queue_worker); } return 0; } static void cryptd_fini_queue(struct cryptd_queue *queue) { int cpu; struct cryptd_cpu_queue *cpu_queue; for_each_possible_cpu(cpu) { cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); BUG_ON(cpu_queue->queue.qlen); } free_percpu(queue->cpu_queue); } static int cryptd_enqueue_request(struct cryptd_queue *queue, struct crypto_async_request *request) { int cpu, err; struct cryptd_cpu_queue *cpu_queue; cpu = get_cpu(); |
0b44f4861 this_cpu: Use thi... |
118 |
cpu_queue = this_cpu_ptr(queue->cpu_queue); |
254eff771 crypto: cryptd - ... |
119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 |
err = crypto_enqueue_request(&cpu_queue->queue, request); queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); put_cpu(); return err; } /* Called in workqueue context, do one real cryption work (via * req->complete) and reschedule itself if there are more work to * do. */ static void cryptd_queue_worker(struct work_struct *work) { struct cryptd_cpu_queue *cpu_queue; struct crypto_async_request *req, *backlog; cpu_queue = container_of(work, struct cryptd_cpu_queue, work); |
9efade1b3 crypto: cryptd - ... |
135 136 137 138 139 140 141 |
/* * Only handle one request at a time to avoid hogging crypto workqueue. * preempt_disable/enable is used to prevent being preempted by * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent * cryptd_enqueue_request() being accessed from software interrupts. */ local_bh_disable(); |
254eff771 crypto: cryptd - ... |
142 143 144 145 |
preempt_disable(); backlog = crypto_get_backlog(&cpu_queue->queue); req = crypto_dequeue_request(&cpu_queue->queue); preempt_enable(); |
9efade1b3 crypto: cryptd - ... |
146 |
local_bh_enable(); |
254eff771 crypto: cryptd - ... |
147 148 149 150 151 152 153 154 155 156 157 158 159 |
if (!req) return; if (backlog) backlog->complete(backlog, -EINPROGRESS); req->complete(req, 0); if (cpu_queue->queue.qlen) queue_work(kcrypto_wq, &cpu_queue->work); } static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) |
124b53d02 [CRYPTO] cryptd: ... |
160 161 162 |
{ struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
254eff771 crypto: cryptd - ... |
163 |
return ictx->queue; |
124b53d02 [CRYPTO] cryptd: ... |
164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 |
} static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, const u8 *key, unsigned int keylen) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); struct crypto_blkcipher *child = ctx->child; int err; crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_blkcipher_setkey(child, key, keylen); crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & CRYPTO_TFM_RES_MASK); return err; } static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, struct crypto_blkcipher *child, int err, int (*crypt)(struct blkcipher_desc *desc, struct scatterlist *dst, struct scatterlist *src, unsigned int len)) { struct cryptd_blkcipher_request_ctx *rctx; struct blkcipher_desc desc; rctx = ablkcipher_request_ctx(req); |
93aa7f8a1 [CRYPTO] cryptd: ... |
194 195 |
if (unlikely(err == -EINPROGRESS)) goto out; |
124b53d02 [CRYPTO] cryptd: ... |
196 197 198 199 200 201 202 203 |
desc.tfm = child; desc.info = req->info; desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; err = crypt(&desc, req->dst, req->src, req->nbytes); req->base.complete = rctx->complete; |
93aa7f8a1 [CRYPTO] cryptd: ... |
204 |
out: |
124b53d02 [CRYPTO] cryptd: ... |
205 |
local_bh_disable(); |
93aa7f8a1 [CRYPTO] cryptd: ... |
206 |
rctx->complete(&req->base, err); |
124b53d02 [CRYPTO] cryptd: ... |
207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 |
local_bh_enable(); } static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->encrypt); } static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); struct crypto_blkcipher *child = ctx->child; cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, crypto_blkcipher_crt(child)->decrypt); } static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, crypto_completion_t complete) { struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); |
254eff771 crypto: cryptd - ... |
233 |
struct cryptd_queue *queue; |
124b53d02 [CRYPTO] cryptd: ... |
234 |
|
254eff771 crypto: cryptd - ... |
235 |
queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); |
124b53d02 [CRYPTO] cryptd: ... |
236 237 |
rctx->complete = req->base.complete; req->base.complete = complete; |
254eff771 crypto: cryptd - ... |
238 |
return cryptd_enqueue_request(queue, &req->base); |
124b53d02 [CRYPTO] cryptd: ... |
239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 |
} static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); } static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) { return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); } static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_spawn *spawn = &ictx->spawn; struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_blkcipher *cipher; cipher = crypto_spawn_blkcipher(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); ctx->child = cipher; tfm->crt_ablkcipher.reqsize = sizeof(struct cryptd_blkcipher_request_ctx); return 0; } static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
124b53d02 [CRYPTO] cryptd: ... |
272 273 274 |
crypto_free_blkcipher(ctx->child); } |
0b535adfb crypto: cryptd - ... |
275 276 |
static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, unsigned int tail) |
124b53d02 [CRYPTO] cryptd: ... |
277 |
{ |
0b535adfb crypto: cryptd - ... |
278 |
char *p; |
124b53d02 [CRYPTO] cryptd: ... |
279 |
struct crypto_instance *inst; |
124b53d02 [CRYPTO] cryptd: ... |
280 |
int err; |
0b535adfb crypto: cryptd - ... |
281 282 283 284 285 |
p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); if (!p) return ERR_PTR(-ENOMEM); inst = (void *)(p + head); |
124b53d02 [CRYPTO] cryptd: ... |
286 287 288 289 290 |
err = -ENAMETOOLONG; if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) goto out_free_inst; |
124b53d02 [CRYPTO] cryptd: ... |
291 292 293 294 295 296 297 |
memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); inst->alg.cra_priority = alg->cra_priority + 50; inst->alg.cra_blocksize = alg->cra_blocksize; inst->alg.cra_alignmask = alg->cra_alignmask; out: |
0b535adfb crypto: cryptd - ... |
298 |
return p; |
124b53d02 [CRYPTO] cryptd: ... |
299 300 |
out_free_inst: |
0b535adfb crypto: cryptd - ... |
301 302 |
kfree(p); p = ERR_PTR(err); |
124b53d02 [CRYPTO] cryptd: ... |
303 304 |
goto out; } |
9cd899a32 crypto: cryptd - ... |
305 306 307 |
static int cryptd_create_blkcipher(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
124b53d02 [CRYPTO] cryptd: ... |
308 |
{ |
46309d893 crypto: cryptd - ... |
309 |
struct cryptd_instance_ctx *ctx; |
124b53d02 [CRYPTO] cryptd: ... |
310 311 |
struct crypto_instance *inst; struct crypto_alg *alg; |
46309d893 crypto: cryptd - ... |
312 |
int err; |
124b53d02 [CRYPTO] cryptd: ... |
313 314 |
alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, |
332f8840f [CRYPTO] ablkciph... |
315 |
CRYPTO_ALG_TYPE_MASK); |
124b53d02 [CRYPTO] cryptd: ... |
316 |
if (IS_ERR(alg)) |
9cd899a32 crypto: cryptd - ... |
317 |
return PTR_ERR(alg); |
124b53d02 [CRYPTO] cryptd: ... |
318 |
|
0b535adfb crypto: cryptd - ... |
319 |
inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
05ed8758f crypto: cryptd - ... |
320 |
err = PTR_ERR(inst); |
124b53d02 [CRYPTO] cryptd: ... |
321 322 |
if (IS_ERR(inst)) goto out_put_alg; |
46309d893 crypto: cryptd - ... |
323 324 325 326 327 328 329 |
ctx = crypto_instance_ctx(inst); ctx->queue = queue; err = crypto_init_spawn(&ctx->spawn, alg, inst, CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); if (err) goto out_free_inst; |
332f8840f [CRYPTO] ablkciph... |
330 |
inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
124b53d02 [CRYPTO] cryptd: ... |
331 332 333 334 335 |
inst->alg.cra_type = &crypto_ablkcipher_type; inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; |
927eead52 [CRYPTO] cryptd: ... |
336 |
inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
124b53d02 [CRYPTO] cryptd: ... |
337 338 339 340 341 342 343 344 |
inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); inst->alg.cra_init = cryptd_blkcipher_init_tfm; inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; |
9cd899a32 crypto: cryptd - ... |
345 346 347 348 349 350 |
err = crypto_register_instance(tmpl, inst); if (err) { crypto_drop_spawn(&ctx->spawn); out_free_inst: kfree(inst); } |
124b53d02 [CRYPTO] cryptd: ... |
351 352 |
out_put_alg: crypto_mod_put(alg); |
9cd899a32 crypto: cryptd - ... |
353 |
return err; |
124b53d02 [CRYPTO] cryptd: ... |
354 |
} |
b8a28251c [CRYPTO] cryptd: ... |
355 356 357 |
static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
46309d893 crypto: cryptd - ... |
358 359 |
struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_shash_spawn *spawn = &ictx->spawn; |
b8a28251c [CRYPTO] cryptd: ... |
360 |
struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
46309d893 crypto: cryptd - ... |
361 |
struct crypto_shash *hash; |
b8a28251c [CRYPTO] cryptd: ... |
362 |
|
46309d893 crypto: cryptd - ... |
363 364 365 |
hash = crypto_spawn_shash(spawn); if (IS_ERR(hash)) return PTR_ERR(hash); |
b8a28251c [CRYPTO] cryptd: ... |
366 |
|
46309d893 crypto: cryptd - ... |
367 |
ctx->child = hash; |
0d6669e2b crypto: cryptd - ... |
368 369 370 |
crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), sizeof(struct cryptd_hash_request_ctx) + crypto_shash_descsize(hash)); |
b8a28251c [CRYPTO] cryptd: ... |
371 372 373 374 375 376 |
return 0; } static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
b8a28251c [CRYPTO] cryptd: ... |
377 |
|
46309d893 crypto: cryptd - ... |
378 |
crypto_free_shash(ctx->child); |
b8a28251c [CRYPTO] cryptd: ... |
379 380 381 382 383 384 |
} static int cryptd_hash_setkey(struct crypto_ahash *parent, const u8 *key, unsigned int keylen) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
46309d893 crypto: cryptd - ... |
385 |
struct crypto_shash *child = ctx->child; |
b8a28251c [CRYPTO] cryptd: ... |
386 |
int err; |
46309d893 crypto: cryptd - ... |
387 388 389 390 391 392 |
crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & CRYPTO_TFM_REQ_MASK); err = crypto_shash_setkey(child, key, keylen); crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & CRYPTO_TFM_RES_MASK); |
b8a28251c [CRYPTO] cryptd: ... |
393 394 395 396 397 398 399 400 |
return err; } static int cryptd_hash_enqueue(struct ahash_request *req, crypto_completion_t complete) { struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
254eff771 crypto: cryptd - ... |
401 402 |
struct cryptd_queue *queue = cryptd_get_queue(crypto_ahash_tfm(tfm)); |
b8a28251c [CRYPTO] cryptd: ... |
403 404 405 |
rctx->complete = req->base.complete; req->base.complete = complete; |
254eff771 crypto: cryptd - ... |
406 |
return cryptd_enqueue_request(queue, &req->base); |
b8a28251c [CRYPTO] cryptd: ... |
407 408 409 410 |
} static void cryptd_hash_init(struct crypto_async_request *req_async, int err) { |
46309d893 crypto: cryptd - ... |
411 412 413 414 415 |
struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); struct crypto_shash *child = ctx->child; struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); struct shash_desc *desc = &rctx->desc; |
b8a28251c [CRYPTO] cryptd: ... |
416 417 418 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893 crypto: cryptd - ... |
419 420 |
desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
b8a28251c [CRYPTO] cryptd: ... |
421 |
|
46309d893 crypto: cryptd - ... |
422 |
err = crypto_shash_init(desc); |
b8a28251c [CRYPTO] cryptd: ... |
423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 |
req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static int cryptd_hash_init_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_init); } static void cryptd_hash_update(struct crypto_async_request *req_async, int err) { |
46309d893 crypto: cryptd - ... |
439 |
struct ahash_request *req = ahash_request_cast(req_async); |
b8a28251c [CRYPTO] cryptd: ... |
440 |
struct cryptd_hash_request_ctx *rctx; |
b8a28251c [CRYPTO] cryptd: ... |
441 442 443 444 445 |
rctx = ahash_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893 crypto: cryptd - ... |
446 |
err = shash_ahash_update(req, &rctx->desc); |
b8a28251c [CRYPTO] cryptd: ... |
447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 |
req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static int cryptd_hash_update_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_update); } static void cryptd_hash_final(struct crypto_async_request *req_async, int err) { |
46309d893 crypto: cryptd - ... |
463 464 |
struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
b8a28251c [CRYPTO] cryptd: ... |
465 466 467 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893 crypto: cryptd - ... |
468 |
err = crypto_shash_final(&rctx->desc, req->result); |
b8a28251c [CRYPTO] cryptd: ... |
469 470 471 472 473 474 475 476 477 478 479 480 481 |
req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static int cryptd_hash_final_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_final); } |
6fba00d17 crypto: cryptd - ... |
482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 |
static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) { struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; err = shash_ahash_finup(req, &rctx->desc); req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static int cryptd_hash_finup_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_finup); } |
b8a28251c [CRYPTO] cryptd: ... |
504 505 |
static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) { |
46309d893 crypto: cryptd - ... |
506 507 508 509 510 |
struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); struct crypto_shash *child = ctx->child; struct ahash_request *req = ahash_request_cast(req_async); struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); struct shash_desc *desc = &rctx->desc; |
b8a28251c [CRYPTO] cryptd: ... |
511 512 513 |
if (unlikely(err == -EINPROGRESS)) goto out; |
46309d893 crypto: cryptd - ... |
514 515 |
desc->tfm = child; desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
b8a28251c [CRYPTO] cryptd: ... |
516 |
|
46309d893 crypto: cryptd - ... |
517 |
err = shash_ahash_digest(req, desc); |
b8a28251c [CRYPTO] cryptd: ... |
518 519 520 521 522 523 524 525 526 527 528 529 530 |
req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static int cryptd_hash_digest_enqueue(struct ahash_request *req) { return cryptd_hash_enqueue(req, cryptd_hash_digest); } |
6fba00d17 crypto: cryptd - ... |
531 532 533 534 535 536 537 538 539 540 541 542 543 |
static int cryptd_hash_export(struct ahash_request *req, void *out) { struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); return crypto_shash_export(&rctx->desc, out); } static int cryptd_hash_import(struct ahash_request *req, const void *in) { struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); return crypto_shash_import(&rctx->desc, in); } |
9cd899a32 crypto: cryptd - ... |
544 545 |
static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) |
b8a28251c [CRYPTO] cryptd: ... |
546 |
{ |
46309d893 crypto: cryptd - ... |
547 |
struct hashd_instance_ctx *ctx; |
0b535adfb crypto: cryptd - ... |
548 |
struct ahash_instance *inst; |
46309d893 crypto: cryptd - ... |
549 |
struct shash_alg *salg; |
b8a28251c [CRYPTO] cryptd: ... |
550 |
struct crypto_alg *alg; |
46309d893 crypto: cryptd - ... |
551 |
int err; |
b8a28251c [CRYPTO] cryptd: ... |
552 |
|
46309d893 crypto: cryptd - ... |
553 554 |
salg = shash_attr_alg(tb[1], 0, 0); if (IS_ERR(salg)) |
9cd899a32 crypto: cryptd - ... |
555 |
return PTR_ERR(salg); |
b8a28251c [CRYPTO] cryptd: ... |
556 |
|
46309d893 crypto: cryptd - ... |
557 |
alg = &salg->base; |
0b535adfb crypto: cryptd - ... |
558 559 |
inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), sizeof(*ctx)); |
05ed8758f crypto: cryptd - ... |
560 |
err = PTR_ERR(inst); |
b8a28251c [CRYPTO] cryptd: ... |
561 562 |
if (IS_ERR(inst)) goto out_put_alg; |
0b535adfb crypto: cryptd - ... |
563 |
ctx = ahash_instance_ctx(inst); |
46309d893 crypto: cryptd - ... |
564 |
ctx->queue = queue; |
0b535adfb crypto: cryptd - ... |
565 566 |
err = crypto_init_shash_spawn(&ctx->spawn, salg, ahash_crypto_instance(inst)); |
46309d893 crypto: cryptd - ... |
567 568 |
if (err) goto out_free_inst; |
0b535adfb crypto: cryptd - ... |
569 |
inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
b8a28251c [CRYPTO] cryptd: ... |
570 |
|
0b535adfb crypto: cryptd - ... |
571 572 |
inst->alg.halg.digestsize = salg->digestsize; inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
b8a28251c [CRYPTO] cryptd: ... |
573 |
|
0b535adfb crypto: cryptd - ... |
574 575 |
inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
b8a28251c [CRYPTO] cryptd: ... |
576 |
|
0b535adfb crypto: cryptd - ... |
577 578 579 |
inst->alg.init = cryptd_hash_init_enqueue; inst->alg.update = cryptd_hash_update_enqueue; inst->alg.final = cryptd_hash_final_enqueue; |
6fba00d17 crypto: cryptd - ... |
580 581 582 |
inst->alg.finup = cryptd_hash_finup_enqueue; inst->alg.export = cryptd_hash_export; inst->alg.import = cryptd_hash_import; |
0b535adfb crypto: cryptd - ... |
583 584 |
inst->alg.setkey = cryptd_hash_setkey; inst->alg.digest = cryptd_hash_digest_enqueue; |
b8a28251c [CRYPTO] cryptd: ... |
585 |
|
0b535adfb crypto: cryptd - ... |
586 |
err = ahash_register_instance(tmpl, inst); |
9cd899a32 crypto: cryptd - ... |
587 588 589 590 591 |
if (err) { crypto_drop_shash(&ctx->spawn); out_free_inst: kfree(inst); } |
b8a28251c [CRYPTO] cryptd: ... |
592 593 |
out_put_alg: crypto_mod_put(alg); |
9cd899a32 crypto: cryptd - ... |
594 |
return err; |
b8a28251c [CRYPTO] cryptd: ... |
595 |
} |
298c926c6 crypto: cryptd - ... |
596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 |
static void cryptd_aead_crypt(struct aead_request *req, struct crypto_aead *child, int err, int (*crypt)(struct aead_request *req)) { struct cryptd_aead_request_ctx *rctx; rctx = aead_request_ctx(req); if (unlikely(err == -EINPROGRESS)) goto out; aead_request_set_tfm(req, child); err = crypt( req ); req->base.complete = rctx->complete; out: local_bh_disable(); rctx->complete(&req->base, err); local_bh_enable(); } static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); struct crypto_aead *child = ctx->child; struct aead_request *req; req = container_of(areq, struct aead_request, base); cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->encrypt); } static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); struct crypto_aead *child = ctx->child; struct aead_request *req; req = container_of(areq, struct aead_request, base); cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->decrypt); } static int cryptd_aead_enqueue(struct aead_request *req, crypto_completion_t complete) { struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); struct crypto_aead *tfm = crypto_aead_reqtfm(req); struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); rctx->complete = req->base.complete; req->base.complete = complete; return cryptd_enqueue_request(queue, &req->base); } static int cryptd_aead_encrypt_enqueue(struct aead_request *req) { return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); } static int cryptd_aead_decrypt_enqueue(struct aead_request *req) { return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); } static int cryptd_aead_init_tfm(struct crypto_tfm *tfm) { struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); struct aead_instance_ctx *ictx = crypto_instance_ctx(inst); struct crypto_aead_spawn *spawn = &ictx->aead_spawn; struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); struct crypto_aead *cipher; cipher = crypto_spawn_aead(spawn); if (IS_ERR(cipher)) return PTR_ERR(cipher); crypto_aead_set_flags(cipher, CRYPTO_TFM_REQ_MAY_SLEEP); ctx->child = cipher; tfm->crt_aead.reqsize = sizeof(struct cryptd_aead_request_ctx); return 0; } static void cryptd_aead_exit_tfm(struct crypto_tfm *tfm) { struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); crypto_free_aead(ctx->child); } static int cryptd_create_aead(struct crypto_template *tmpl, struct rtattr **tb, struct cryptd_queue *queue) { struct aead_instance_ctx *ctx; struct crypto_instance *inst; struct crypto_alg *alg; int err; alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_AEAD, CRYPTO_ALG_TYPE_MASK); if (IS_ERR(alg)) return PTR_ERR(alg); inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); err = PTR_ERR(inst); if (IS_ERR(inst)) goto out_put_alg; ctx = crypto_instance_ctx(inst); ctx->queue = queue; err = crypto_init_spawn(&ctx->aead_spawn.base, alg, inst, CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); if (err) goto out_free_inst; inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC; inst->alg.cra_type = alg->cra_type; inst->alg.cra_ctxsize = sizeof(struct cryptd_aead_ctx); inst->alg.cra_init = cryptd_aead_init_tfm; inst->alg.cra_exit = cryptd_aead_exit_tfm; inst->alg.cra_aead.setkey = alg->cra_aead.setkey; inst->alg.cra_aead.setauthsize = alg->cra_aead.setauthsize; inst->alg.cra_aead.geniv = alg->cra_aead.geniv; inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; inst->alg.cra_aead.encrypt = cryptd_aead_encrypt_enqueue; inst->alg.cra_aead.decrypt = cryptd_aead_decrypt_enqueue; inst->alg.cra_aead.givencrypt = alg->cra_aead.givencrypt; inst->alg.cra_aead.givdecrypt = alg->cra_aead.givdecrypt; err = crypto_register_instance(tmpl, inst); if (err) { crypto_drop_spawn(&ctx->aead_spawn.base); out_free_inst: kfree(inst); } out_put_alg: crypto_mod_put(alg); return err; } |
254eff771 crypto: cryptd - ... |
733 |
static struct cryptd_queue queue; |
124b53d02 [CRYPTO] cryptd: ... |
734 |
|
9cd899a32 crypto: cryptd - ... |
735 |
static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
124b53d02 [CRYPTO] cryptd: ... |
736 737 738 739 740 |
{ struct crypto_attr_type *algt; algt = crypto_get_attr_type(tb); if (IS_ERR(algt)) |
9cd899a32 crypto: cryptd - ... |
741 |
return PTR_ERR(algt); |
124b53d02 [CRYPTO] cryptd: ... |
742 743 744 |
switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_BLKCIPHER: |
9cd899a32 crypto: cryptd - ... |
745 |
return cryptd_create_blkcipher(tmpl, tb, &queue); |
b8a28251c [CRYPTO] cryptd: ... |
746 |
case CRYPTO_ALG_TYPE_DIGEST: |
9cd899a32 crypto: cryptd - ... |
747 |
return cryptd_create_hash(tmpl, tb, &queue); |
298c926c6 crypto: cryptd - ... |
748 749 |
case CRYPTO_ALG_TYPE_AEAD: return cryptd_create_aead(tmpl, tb, &queue); |
124b53d02 [CRYPTO] cryptd: ... |
750 |
} |
9cd899a32 crypto: cryptd - ... |
751 |
return -EINVAL; |
124b53d02 [CRYPTO] cryptd: ... |
752 753 754 755 756 |
} static void cryptd_free(struct crypto_instance *inst) { struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
0b535adfb crypto: cryptd - ... |
757 |
struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
298c926c6 crypto: cryptd - ... |
758 |
struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
0b535adfb crypto: cryptd - ... |
759 760 761 762 763 764 |
switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { case CRYPTO_ALG_TYPE_AHASH: crypto_drop_shash(&hctx->spawn); kfree(ahash_instance(inst)); return; |
298c926c6 crypto: cryptd - ... |
765 766 767 768 769 770 771 |
case CRYPTO_ALG_TYPE_AEAD: crypto_drop_spawn(&aead_ctx->aead_spawn.base); kfree(inst); return; default: crypto_drop_spawn(&ctx->spawn); kfree(inst); |
0b535adfb crypto: cryptd - ... |
772 |
} |
124b53d02 [CRYPTO] cryptd: ... |
773 774 775 776 |
} static struct crypto_template cryptd_tmpl = { .name = "cryptd", |
9cd899a32 crypto: cryptd - ... |
777 |
.create = cryptd_create, |
124b53d02 [CRYPTO] cryptd: ... |
778 779 780 |
.free = cryptd_free, .module = THIS_MODULE, }; |
1cac2cbc7 crypto: cryptd - ... |
781 782 783 784 |
struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
505fd21d6 crypto: cryptd - ... |
785 |
struct crypto_tfm *tfm; |
1cac2cbc7 crypto: cryptd - ... |
786 787 788 789 |
if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); |
505fd21d6 crypto: cryptd - ... |
790 791 792 793 794 |
type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); type |= CRYPTO_ALG_TYPE_BLKCIPHER; mask &= ~CRYPTO_ALG_TYPE_MASK; mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); tfm = crypto_alloc_base(cryptd_alg_name, type, mask); |
1cac2cbc7 crypto: cryptd - ... |
795 796 |
if (IS_ERR(tfm)) return ERR_CAST(tfm); |
505fd21d6 crypto: cryptd - ... |
797 798 |
if (tfm->__crt_alg->cra_module != THIS_MODULE) { crypto_free_tfm(tfm); |
1cac2cbc7 crypto: cryptd - ... |
799 800 |
return ERR_PTR(-EINVAL); } |
505fd21d6 crypto: cryptd - ... |
801 |
return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
1cac2cbc7 crypto: cryptd - ... |
802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 |
} EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) { struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) { crypto_free_ablkcipher(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); |
ace136636 crypto: cryptd - ... |
817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 |
struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; struct crypto_ahash *tfm; if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); if (IS_ERR(tfm)) return ERR_CAST(tfm); if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { crypto_free_ahash(tfm); return ERR_PTR(-EINVAL); } return __cryptd_ahash_cast(tfm); } EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) { struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_ahash_child); |
0e1227d35 crypto: ghash - A... |
845 846 847 848 849 850 |
struct shash_desc *cryptd_shash_desc(struct ahash_request *req) { struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); return &rctx->desc; } EXPORT_SYMBOL_GPL(cryptd_shash_desc); |
ace136636 crypto: cryptd - ... |
851 852 853 854 855 |
void cryptd_free_ahash(struct cryptd_ahash *tfm) { crypto_free_ahash(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
298c926c6 crypto: cryptd - ... |
856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 |
struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, u32 type, u32 mask) { char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; struct crypto_aead *tfm; if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) return ERR_PTR(-EINVAL); tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); if (IS_ERR(tfm)) return ERR_CAST(tfm); if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { crypto_free_aead(tfm); return ERR_PTR(-EINVAL); } return __cryptd_aead_cast(tfm); } EXPORT_SYMBOL_GPL(cryptd_alloc_aead); struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) { struct cryptd_aead_ctx *ctx; ctx = crypto_aead_ctx(&tfm->base); return ctx->child; } EXPORT_SYMBOL_GPL(cryptd_aead_child); void cryptd_free_aead(struct cryptd_aead *tfm) { crypto_free_aead(&tfm->base); } EXPORT_SYMBOL_GPL(cryptd_free_aead); |
124b53d02 [CRYPTO] cryptd: ... |
889 890 891 |
static int __init cryptd_init(void) { int err; |
254eff771 crypto: cryptd - ... |
892 |
err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
124b53d02 [CRYPTO] cryptd: ... |
893 894 895 896 897 |
if (err) return err; err = crypto_register_template(&cryptd_tmpl); if (err) |
254eff771 crypto: cryptd - ... |
898 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
899 900 901 902 903 904 |
return err; } static void __exit cryptd_exit(void) { |
254eff771 crypto: cryptd - ... |
905 |
cryptd_fini_queue(&queue); |
124b53d02 [CRYPTO] cryptd: ... |
906 907 |
crypto_unregister_template(&cryptd_tmpl); } |
b2bac6acf crypto: cryptd - ... |
908 |
subsys_initcall(cryptd_init); |
124b53d02 [CRYPTO] cryptd: ... |
909 910 911 912 |
module_exit(cryptd_exit); MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("Software async crypto daemon"); |