Thomas Gleixner | 2874c5f | 2019-05-27 08:55:01 +0200 | [diff] [blame] | 1 | // SPDX-License-Identifier: GPL-2.0-or-later |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 2 | /* |
| 3 | * Software async crypto daemon. |
| 4 | * |
| 5 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> |
| 6 | * |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 7 | * Added AEAD support to cryptd. |
| 8 | * Authors: Tadeusz Struk (tadeusz.struk@intel.com) |
| 9 | * Adrian Hoban <adrian.hoban@intel.com> |
| 10 | * Gabriele Paoloni <gabriele.paoloni@intel.com> |
| 11 | * Aidan O'Mahony (aidan.o.mahony@intel.com) |
| 12 | * Copyright (c) 2010, Intel Corporation. |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 13 | */ |
| 14 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 15 | #include <crypto/internal/hash.h> |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 16 | #include <crypto/internal/aead.h> |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 17 | #include <crypto/internal/skcipher.h> |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 18 | #include <crypto/cryptd.h> |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 19 | #include <crypto/crypto_wq.h> |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 20 | #include <linux/atomic.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 21 | #include <linux/err.h> |
| 22 | #include <linux/init.h> |
| 23 | #include <linux/kernel.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 24 | #include <linux/list.h> |
| 25 | #include <linux/module.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 26 | #include <linux/scatterlist.h> |
| 27 | #include <linux/sched.h> |
| 28 | #include <linux/slab.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 29 | |
Colin Ian King | eaf356e | 2017-11-30 11:26:14 +0000 | [diff] [blame] | 30 | static unsigned int cryptd_max_cpu_qlen = 1000; |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 31 | module_param(cryptd_max_cpu_qlen, uint, 0); |
| 32 | MODULE_PARM_DESC(cryptd_max_cpu_qlen, "Set cryptd Max queue depth"); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 33 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 34 | struct cryptd_cpu_queue { |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 35 | struct crypto_queue queue; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 36 | struct work_struct work; |
| 37 | }; |
| 38 | |
| 39 | struct cryptd_queue { |
Tejun Heo | a29d8b8 | 2010-02-02 14:39:15 +0900 | [diff] [blame] | 40 | struct cryptd_cpu_queue __percpu *cpu_queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 41 | }; |
| 42 | |
| 43 | struct cryptd_instance_ctx { |
| 44 | struct crypto_spawn spawn; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 45 | struct cryptd_queue *queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 46 | }; |
| 47 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 48 | struct skcipherd_instance_ctx { |
| 49 | struct crypto_skcipher_spawn spawn; |
| 50 | struct cryptd_queue *queue; |
| 51 | }; |
| 52 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 53 | struct hashd_instance_ctx { |
| 54 | struct crypto_shash_spawn spawn; |
| 55 | struct cryptd_queue *queue; |
| 56 | }; |
| 57 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 58 | struct aead_instance_ctx { |
| 59 | struct crypto_aead_spawn aead_spawn; |
| 60 | struct cryptd_queue *queue; |
| 61 | }; |
| 62 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 63 | struct cryptd_skcipher_ctx { |
| 64 | atomic_t refcnt; |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 65 | struct crypto_sync_skcipher *child; |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 66 | }; |
| 67 | |
| 68 | struct cryptd_skcipher_request_ctx { |
| 69 | crypto_completion_t complete; |
| 70 | }; |
| 71 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 72 | struct cryptd_hash_ctx { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 73 | atomic_t refcnt; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 74 | struct crypto_shash *child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 75 | }; |
| 76 | |
| 77 | struct cryptd_hash_request_ctx { |
| 78 | crypto_completion_t complete; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 79 | struct shash_desc desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 80 | }; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 81 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 82 | struct cryptd_aead_ctx { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 83 | atomic_t refcnt; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 84 | struct crypto_aead *child; |
| 85 | }; |
| 86 | |
| 87 | struct cryptd_aead_request_ctx { |
| 88 | crypto_completion_t complete; |
| 89 | }; |
| 90 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 91 | static void cryptd_queue_worker(struct work_struct *work); |
| 92 | |
| 93 | static int cryptd_init_queue(struct cryptd_queue *queue, |
| 94 | unsigned int max_cpu_qlen) |
| 95 | { |
| 96 | int cpu; |
| 97 | struct cryptd_cpu_queue *cpu_queue; |
| 98 | |
| 99 | queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); |
| 100 | if (!queue->cpu_queue) |
| 101 | return -ENOMEM; |
| 102 | for_each_possible_cpu(cpu) { |
| 103 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 104 | crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); |
| 105 | INIT_WORK(&cpu_queue->work, cryptd_queue_worker); |
| 106 | } |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 107 | pr_info("cryptd: max_cpu_qlen set to %d\n", max_cpu_qlen); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 108 | return 0; |
| 109 | } |
| 110 | |
| 111 | static void cryptd_fini_queue(struct cryptd_queue *queue) |
| 112 | { |
| 113 | int cpu; |
| 114 | struct cryptd_cpu_queue *cpu_queue; |
| 115 | |
| 116 | for_each_possible_cpu(cpu) { |
| 117 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 118 | BUG_ON(cpu_queue->queue.qlen); |
| 119 | } |
| 120 | free_percpu(queue->cpu_queue); |
| 121 | } |
| 122 | |
| 123 | static int cryptd_enqueue_request(struct cryptd_queue *queue, |
| 124 | struct crypto_async_request *request) |
| 125 | { |
| 126 | int cpu, err; |
| 127 | struct cryptd_cpu_queue *cpu_queue; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 128 | atomic_t *refcnt; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 129 | |
| 130 | cpu = get_cpu(); |
Christoph Lameter | 0b44f48 | 2009-10-03 19:48:23 +0900 | [diff] [blame] | 131 | cpu_queue = this_cpu_ptr(queue->cpu_queue); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 132 | err = crypto_enqueue_request(&cpu_queue->queue, request); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 133 | |
| 134 | refcnt = crypto_tfm_ctx(request->tfm); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 135 | |
Gilad Ben-Yossef | 6b80ea3 | 2017-10-18 08:00:33 +0100 | [diff] [blame] | 136 | if (err == -ENOSPC) |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 137 | goto out_put_cpu; |
| 138 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 139 | queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 140 | |
| 141 | if (!atomic_read(refcnt)) |
| 142 | goto out_put_cpu; |
| 143 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 144 | atomic_inc(refcnt); |
| 145 | |
| 146 | out_put_cpu: |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 147 | put_cpu(); |
| 148 | |
| 149 | return err; |
| 150 | } |
| 151 | |
| 152 | /* Called in workqueue context, do one real cryption work (via |
| 153 | * req->complete) and reschedule itself if there are more work to |
| 154 | * do. */ |
| 155 | static void cryptd_queue_worker(struct work_struct *work) |
| 156 | { |
| 157 | struct cryptd_cpu_queue *cpu_queue; |
| 158 | struct crypto_async_request *req, *backlog; |
| 159 | |
| 160 | cpu_queue = container_of(work, struct cryptd_cpu_queue, work); |
Jussi Kivilinna | 9efade1 | 2012-10-21 20:42:28 +0300 | [diff] [blame] | 161 | /* |
| 162 | * Only handle one request at a time to avoid hogging crypto workqueue. |
| 163 | * preempt_disable/enable is used to prevent being preempted by |
| 164 | * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent |
| 165 | * cryptd_enqueue_request() being accessed from software interrupts. |
| 166 | */ |
| 167 | local_bh_disable(); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 168 | preempt_disable(); |
| 169 | backlog = crypto_get_backlog(&cpu_queue->queue); |
| 170 | req = crypto_dequeue_request(&cpu_queue->queue); |
| 171 | preempt_enable(); |
Jussi Kivilinna | 9efade1 | 2012-10-21 20:42:28 +0300 | [diff] [blame] | 172 | local_bh_enable(); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 173 | |
| 174 | if (!req) |
| 175 | return; |
| 176 | |
| 177 | if (backlog) |
| 178 | backlog->complete(backlog, -EINPROGRESS); |
| 179 | req->complete(req, 0); |
| 180 | |
| 181 | if (cpu_queue->queue.qlen) |
| 182 | queue_work(kcrypto_wq, &cpu_queue->work); |
| 183 | } |
| 184 | |
| 185 | static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 186 | { |
| 187 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 188 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 189 | return ictx->queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 190 | } |
| 191 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 192 | static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, |
| 193 | u32 *mask) |
| 194 | { |
| 195 | struct crypto_attr_type *algt; |
| 196 | |
| 197 | algt = crypto_get_attr_type(tb); |
| 198 | if (IS_ERR(algt)) |
| 199 | return; |
Herbert Xu | f6da320 | 2015-07-09 07:17:19 +0800 | [diff] [blame] | 200 | |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 201 | *type |= algt->type & CRYPTO_ALG_INTERNAL; |
| 202 | *mask |= algt->mask & CRYPTO_ALG_INTERNAL; |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 203 | } |
| 204 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 205 | static int cryptd_init_instance(struct crypto_instance *inst, |
| 206 | struct crypto_alg *alg) |
| 207 | { |
| 208 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, |
| 209 | "cryptd(%s)", |
| 210 | alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) |
| 211 | return -ENAMETOOLONG; |
| 212 | |
| 213 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); |
| 214 | |
| 215 | inst->alg.cra_priority = alg->cra_priority + 50; |
| 216 | inst->alg.cra_blocksize = alg->cra_blocksize; |
| 217 | inst->alg.cra_alignmask = alg->cra_alignmask; |
| 218 | |
| 219 | return 0; |
| 220 | } |
| 221 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 222 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
| 223 | unsigned int tail) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 224 | { |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 225 | char *p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 226 | struct crypto_instance *inst; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 227 | int err; |
| 228 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 229 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
| 230 | if (!p) |
| 231 | return ERR_PTR(-ENOMEM); |
| 232 | |
| 233 | inst = (void *)(p + head); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 234 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 235 | err = cryptd_init_instance(inst, alg); |
| 236 | if (err) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 237 | goto out_free_inst; |
| 238 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 239 | out: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 240 | return p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 241 | |
| 242 | out_free_inst: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 243 | kfree(p); |
| 244 | p = ERR_PTR(err); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 245 | goto out; |
| 246 | } |
| 247 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 248 | static int cryptd_skcipher_setkey(struct crypto_skcipher *parent, |
| 249 | const u8 *key, unsigned int keylen) |
| 250 | { |
| 251 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(parent); |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 252 | struct crypto_sync_skcipher *child = ctx->child; |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 253 | int err; |
| 254 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 255 | crypto_sync_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 256 | crypto_sync_skcipher_set_flags(child, |
| 257 | crypto_skcipher_get_flags(parent) & |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 258 | CRYPTO_TFM_REQ_MASK); |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 259 | err = crypto_sync_skcipher_setkey(child, key, keylen); |
| 260 | crypto_skcipher_set_flags(parent, |
| 261 | crypto_sync_skcipher_get_flags(child) & |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 262 | CRYPTO_TFM_RES_MASK); |
| 263 | return err; |
| 264 | } |
| 265 | |
| 266 | static void cryptd_skcipher_complete(struct skcipher_request *req, int err) |
| 267 | { |
| 268 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 269 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 270 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 271 | int refcnt = atomic_read(&ctx->refcnt); |
| 272 | |
| 273 | local_bh_disable(); |
| 274 | rctx->complete(&req->base, err); |
| 275 | local_bh_enable(); |
| 276 | |
| 277 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 278 | crypto_free_skcipher(tfm); |
| 279 | } |
| 280 | |
| 281 | static void cryptd_skcipher_encrypt(struct crypto_async_request *base, |
| 282 | int err) |
| 283 | { |
| 284 | struct skcipher_request *req = skcipher_request_cast(base); |
| 285 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 286 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 287 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 288 | struct crypto_sync_skcipher *child = ctx->child; |
| 289 | SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, child); |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 290 | |
| 291 | if (unlikely(err == -EINPROGRESS)) |
| 292 | goto out; |
| 293 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 294 | skcipher_request_set_sync_tfm(subreq, child); |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 295 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
| 296 | NULL, NULL); |
| 297 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, |
| 298 | req->iv); |
| 299 | |
| 300 | err = crypto_skcipher_encrypt(subreq); |
| 301 | skcipher_request_zero(subreq); |
| 302 | |
| 303 | req->base.complete = rctx->complete; |
| 304 | |
| 305 | out: |
| 306 | cryptd_skcipher_complete(req, err); |
| 307 | } |
| 308 | |
| 309 | static void cryptd_skcipher_decrypt(struct crypto_async_request *base, |
| 310 | int err) |
| 311 | { |
| 312 | struct skcipher_request *req = skcipher_request_cast(base); |
| 313 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 314 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 315 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 316 | struct crypto_sync_skcipher *child = ctx->child; |
| 317 | SYNC_SKCIPHER_REQUEST_ON_STACK(subreq, child); |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 318 | |
| 319 | if (unlikely(err == -EINPROGRESS)) |
| 320 | goto out; |
| 321 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 322 | skcipher_request_set_sync_tfm(subreq, child); |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 323 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
| 324 | NULL, NULL); |
| 325 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, |
| 326 | req->iv); |
| 327 | |
| 328 | err = crypto_skcipher_decrypt(subreq); |
| 329 | skcipher_request_zero(subreq); |
| 330 | |
| 331 | req->base.complete = rctx->complete; |
| 332 | |
| 333 | out: |
| 334 | cryptd_skcipher_complete(req, err); |
| 335 | } |
| 336 | |
| 337 | static int cryptd_skcipher_enqueue(struct skcipher_request *req, |
| 338 | crypto_completion_t compl) |
| 339 | { |
| 340 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 341 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 342 | struct cryptd_queue *queue; |
| 343 | |
| 344 | queue = cryptd_get_queue(crypto_skcipher_tfm(tfm)); |
| 345 | rctx->complete = req->base.complete; |
| 346 | req->base.complete = compl; |
| 347 | |
| 348 | return cryptd_enqueue_request(queue, &req->base); |
| 349 | } |
| 350 | |
| 351 | static int cryptd_skcipher_encrypt_enqueue(struct skcipher_request *req) |
| 352 | { |
| 353 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_encrypt); |
| 354 | } |
| 355 | |
| 356 | static int cryptd_skcipher_decrypt_enqueue(struct skcipher_request *req) |
| 357 | { |
| 358 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_decrypt); |
| 359 | } |
| 360 | |
| 361 | static int cryptd_skcipher_init_tfm(struct crypto_skcipher *tfm) |
| 362 | { |
| 363 | struct skcipher_instance *inst = skcipher_alg_instance(tfm); |
| 364 | struct skcipherd_instance_ctx *ictx = skcipher_instance_ctx(inst); |
| 365 | struct crypto_skcipher_spawn *spawn = &ictx->spawn; |
| 366 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 367 | struct crypto_skcipher *cipher; |
| 368 | |
| 369 | cipher = crypto_spawn_skcipher(spawn); |
| 370 | if (IS_ERR(cipher)) |
| 371 | return PTR_ERR(cipher); |
| 372 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 373 | ctx->child = (struct crypto_sync_skcipher *)cipher; |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 374 | crypto_skcipher_set_reqsize( |
| 375 | tfm, sizeof(struct cryptd_skcipher_request_ctx)); |
| 376 | return 0; |
| 377 | } |
| 378 | |
| 379 | static void cryptd_skcipher_exit_tfm(struct crypto_skcipher *tfm) |
| 380 | { |
| 381 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 382 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 383 | crypto_free_sync_skcipher(ctx->child); |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 384 | } |
| 385 | |
| 386 | static void cryptd_skcipher_free(struct skcipher_instance *inst) |
| 387 | { |
| 388 | struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); |
| 389 | |
| 390 | crypto_drop_skcipher(&ctx->spawn); |
| 391 | } |
| 392 | |
| 393 | static int cryptd_create_skcipher(struct crypto_template *tmpl, |
| 394 | struct rtattr **tb, |
| 395 | struct cryptd_queue *queue) |
| 396 | { |
| 397 | struct skcipherd_instance_ctx *ctx; |
| 398 | struct skcipher_instance *inst; |
| 399 | struct skcipher_alg *alg; |
| 400 | const char *name; |
| 401 | u32 type; |
| 402 | u32 mask; |
| 403 | int err; |
| 404 | |
| 405 | type = 0; |
| 406 | mask = CRYPTO_ALG_ASYNC; |
| 407 | |
| 408 | cryptd_check_internal(tb, &type, &mask); |
| 409 | |
| 410 | name = crypto_attr_alg_name(tb[1]); |
| 411 | if (IS_ERR(name)) |
| 412 | return PTR_ERR(name); |
| 413 | |
| 414 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
| 415 | if (!inst) |
| 416 | return -ENOMEM; |
| 417 | |
| 418 | ctx = skcipher_instance_ctx(inst); |
| 419 | ctx->queue = queue; |
| 420 | |
| 421 | crypto_set_skcipher_spawn(&ctx->spawn, skcipher_crypto_instance(inst)); |
| 422 | err = crypto_grab_skcipher(&ctx->spawn, name, type, mask); |
| 423 | if (err) |
| 424 | goto out_free_inst; |
| 425 | |
| 426 | alg = crypto_spawn_skcipher_alg(&ctx->spawn); |
| 427 | err = cryptd_init_instance(skcipher_crypto_instance(inst), &alg->base); |
| 428 | if (err) |
| 429 | goto out_drop_skcipher; |
| 430 | |
| 431 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
| 432 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
| 433 | |
| 434 | inst->alg.ivsize = crypto_skcipher_alg_ivsize(alg); |
| 435 | inst->alg.chunksize = crypto_skcipher_alg_chunksize(alg); |
| 436 | inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(alg); |
| 437 | inst->alg.max_keysize = crypto_skcipher_alg_max_keysize(alg); |
| 438 | |
| 439 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_skcipher_ctx); |
| 440 | |
| 441 | inst->alg.init = cryptd_skcipher_init_tfm; |
| 442 | inst->alg.exit = cryptd_skcipher_exit_tfm; |
| 443 | |
| 444 | inst->alg.setkey = cryptd_skcipher_setkey; |
| 445 | inst->alg.encrypt = cryptd_skcipher_encrypt_enqueue; |
| 446 | inst->alg.decrypt = cryptd_skcipher_decrypt_enqueue; |
| 447 | |
| 448 | inst->free = cryptd_skcipher_free; |
| 449 | |
| 450 | err = skcipher_register_instance(tmpl, inst); |
| 451 | if (err) { |
| 452 | out_drop_skcipher: |
| 453 | crypto_drop_skcipher(&ctx->spawn); |
| 454 | out_free_inst: |
| 455 | kfree(inst); |
| 456 | } |
| 457 | return err; |
| 458 | } |
| 459 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 460 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
| 461 | { |
| 462 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 463 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 464 | struct crypto_shash_spawn *spawn = &ictx->spawn; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 465 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 466 | struct crypto_shash *hash; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 467 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 468 | hash = crypto_spawn_shash(spawn); |
| 469 | if (IS_ERR(hash)) |
| 470 | return PTR_ERR(hash); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 471 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 472 | ctx->child = hash; |
Herbert Xu | 0d6669e | 2009-07-12 23:06:33 +0800 | [diff] [blame] | 473 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
| 474 | sizeof(struct cryptd_hash_request_ctx) + |
| 475 | crypto_shash_descsize(hash)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 476 | return 0; |
| 477 | } |
| 478 | |
| 479 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) |
| 480 | { |
| 481 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 482 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 483 | crypto_free_shash(ctx->child); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 484 | } |
| 485 | |
| 486 | static int cryptd_hash_setkey(struct crypto_ahash *parent, |
| 487 | const u8 *key, unsigned int keylen) |
| 488 | { |
| 489 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 490 | struct crypto_shash *child = ctx->child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 491 | int err; |
| 492 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 493 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 494 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & |
| 495 | CRYPTO_TFM_REQ_MASK); |
| 496 | err = crypto_shash_setkey(child, key, keylen); |
| 497 | crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & |
| 498 | CRYPTO_TFM_RES_MASK); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 499 | return err; |
| 500 | } |
| 501 | |
| 502 | static int cryptd_hash_enqueue(struct ahash_request *req, |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 503 | crypto_completion_t compl) |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 504 | { |
| 505 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 506 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 507 | struct cryptd_queue *queue = |
| 508 | cryptd_get_queue(crypto_ahash_tfm(tfm)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 509 | |
| 510 | rctx->complete = req->base.complete; |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 511 | req->base.complete = compl; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 512 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 513 | return cryptd_enqueue_request(queue, &req->base); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 514 | } |
| 515 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 516 | static void cryptd_hash_complete(struct ahash_request *req, int err) |
| 517 | { |
| 518 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 519 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 520 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 521 | int refcnt = atomic_read(&ctx->refcnt); |
| 522 | |
| 523 | local_bh_disable(); |
| 524 | rctx->complete(&req->base, err); |
| 525 | local_bh_enable(); |
| 526 | |
| 527 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 528 | crypto_free_ahash(tfm); |
| 529 | } |
| 530 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 531 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) |
| 532 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 533 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 534 | struct crypto_shash *child = ctx->child; |
| 535 | struct ahash_request *req = ahash_request_cast(req_async); |
| 536 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 537 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 538 | |
| 539 | if (unlikely(err == -EINPROGRESS)) |
| 540 | goto out; |
| 541 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 542 | desc->tfm = child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 543 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 544 | err = crypto_shash_init(desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 545 | |
| 546 | req->base.complete = rctx->complete; |
| 547 | |
| 548 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 549 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 550 | } |
| 551 | |
| 552 | static int cryptd_hash_init_enqueue(struct ahash_request *req) |
| 553 | { |
| 554 | return cryptd_hash_enqueue(req, cryptd_hash_init); |
| 555 | } |
| 556 | |
| 557 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) |
| 558 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 559 | struct ahash_request *req = ahash_request_cast(req_async); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 560 | struct cryptd_hash_request_ctx *rctx; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 561 | |
| 562 | rctx = ahash_request_ctx(req); |
| 563 | |
| 564 | if (unlikely(err == -EINPROGRESS)) |
| 565 | goto out; |
| 566 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 567 | err = shash_ahash_update(req, &rctx->desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 568 | |
| 569 | req->base.complete = rctx->complete; |
| 570 | |
| 571 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 572 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 573 | } |
| 574 | |
| 575 | static int cryptd_hash_update_enqueue(struct ahash_request *req) |
| 576 | { |
| 577 | return cryptd_hash_enqueue(req, cryptd_hash_update); |
| 578 | } |
| 579 | |
| 580 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) |
| 581 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 582 | struct ahash_request *req = ahash_request_cast(req_async); |
| 583 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 584 | |
| 585 | if (unlikely(err == -EINPROGRESS)) |
| 586 | goto out; |
| 587 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 588 | err = crypto_shash_final(&rctx->desc, req->result); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 589 | |
| 590 | req->base.complete = rctx->complete; |
| 591 | |
| 592 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 593 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | static int cryptd_hash_final_enqueue(struct ahash_request *req) |
| 597 | { |
| 598 | return cryptd_hash_enqueue(req, cryptd_hash_final); |
| 599 | } |
| 600 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 601 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
| 602 | { |
| 603 | struct ahash_request *req = ahash_request_cast(req_async); |
| 604 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 605 | |
| 606 | if (unlikely(err == -EINPROGRESS)) |
| 607 | goto out; |
| 608 | |
| 609 | err = shash_ahash_finup(req, &rctx->desc); |
| 610 | |
| 611 | req->base.complete = rctx->complete; |
| 612 | |
| 613 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 614 | cryptd_hash_complete(req, err); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 615 | } |
| 616 | |
| 617 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) |
| 618 | { |
| 619 | return cryptd_hash_enqueue(req, cryptd_hash_finup); |
| 620 | } |
| 621 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 622 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
| 623 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 624 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 625 | struct crypto_shash *child = ctx->child; |
| 626 | struct ahash_request *req = ahash_request_cast(req_async); |
| 627 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 628 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 629 | |
| 630 | if (unlikely(err == -EINPROGRESS)) |
| 631 | goto out; |
| 632 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 633 | desc->tfm = child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 634 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 635 | err = shash_ahash_digest(req, desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 636 | |
| 637 | req->base.complete = rctx->complete; |
| 638 | |
| 639 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 640 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 641 | } |
| 642 | |
| 643 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) |
| 644 | { |
| 645 | return cryptd_hash_enqueue(req, cryptd_hash_digest); |
| 646 | } |
| 647 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 648 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
| 649 | { |
| 650 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 651 | |
| 652 | return crypto_shash_export(&rctx->desc, out); |
| 653 | } |
| 654 | |
| 655 | static int cryptd_hash_import(struct ahash_request *req, const void *in) |
| 656 | { |
Ard Biesheuvel | 0bd2223 | 2016-09-01 14:25:43 +0100 | [diff] [blame] | 657 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 658 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 659 | struct shash_desc *desc = cryptd_shash_desc(req); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 660 | |
Ard Biesheuvel | 0bd2223 | 2016-09-01 14:25:43 +0100 | [diff] [blame] | 661 | desc->tfm = ctx->child; |
Ard Biesheuvel | 0bd2223 | 2016-09-01 14:25:43 +0100 | [diff] [blame] | 662 | |
| 663 | return crypto_shash_import(desc, in); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 664 | } |
| 665 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 666 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
| 667 | struct cryptd_queue *queue) |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 668 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 669 | struct hashd_instance_ctx *ctx; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 670 | struct ahash_instance *inst; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 671 | struct shash_alg *salg; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 672 | struct crypto_alg *alg; |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 673 | u32 type = 0; |
| 674 | u32 mask = 0; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 675 | int err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 676 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 677 | cryptd_check_internal(tb, &type, &mask); |
| 678 | |
| 679 | salg = shash_attr_alg(tb[1], type, mask); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 680 | if (IS_ERR(salg)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 681 | return PTR_ERR(salg); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 682 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 683 | alg = &salg->base; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 684 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
| 685 | sizeof(*ctx)); |
Steffen Klassert | 05ed875 | 2009-07-15 16:51:04 +0800 | [diff] [blame] | 686 | err = PTR_ERR(inst); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 687 | if (IS_ERR(inst)) |
| 688 | goto out_put_alg; |
| 689 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 690 | ctx = ahash_instance_ctx(inst); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 691 | ctx->queue = queue; |
| 692 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 693 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
| 694 | ahash_crypto_instance(inst)); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 695 | if (err) |
| 696 | goto out_free_inst; |
| 697 | |
Eric Biggers | a208fa8 | 2018-01-03 11:16:26 -0800 | [diff] [blame] | 698 | inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC | |
| 699 | (alg->cra_flags & (CRYPTO_ALG_INTERNAL | |
| 700 | CRYPTO_ALG_OPTIONAL_KEY)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 701 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 702 | inst->alg.halg.digestsize = salg->digestsize; |
Wang, Rui Y | 1a07834 | 2015-11-29 22:45:34 +0800 | [diff] [blame] | 703 | inst->alg.halg.statesize = salg->statesize; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 704 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 705 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 706 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
| 707 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 708 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 709 | inst->alg.init = cryptd_hash_init_enqueue; |
| 710 | inst->alg.update = cryptd_hash_update_enqueue; |
| 711 | inst->alg.final = cryptd_hash_final_enqueue; |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 712 | inst->alg.finup = cryptd_hash_finup_enqueue; |
| 713 | inst->alg.export = cryptd_hash_export; |
| 714 | inst->alg.import = cryptd_hash_import; |
Eric Biggers | 841a3ff | 2018-01-03 11:16:23 -0800 | [diff] [blame] | 715 | if (crypto_shash_alg_has_setkey(salg)) |
| 716 | inst->alg.setkey = cryptd_hash_setkey; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 717 | inst->alg.digest = cryptd_hash_digest_enqueue; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 718 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 719 | err = ahash_register_instance(tmpl, inst); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 720 | if (err) { |
| 721 | crypto_drop_shash(&ctx->spawn); |
| 722 | out_free_inst: |
| 723 | kfree(inst); |
| 724 | } |
| 725 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 726 | out_put_alg: |
| 727 | crypto_mod_put(alg); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 728 | return err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 729 | } |
| 730 | |
Herbert Xu | 92b9876 | 2015-05-28 22:08:01 +0800 | [diff] [blame] | 731 | static int cryptd_aead_setkey(struct crypto_aead *parent, |
| 732 | const u8 *key, unsigned int keylen) |
| 733 | { |
| 734 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); |
| 735 | struct crypto_aead *child = ctx->child; |
| 736 | |
| 737 | return crypto_aead_setkey(child, key, keylen); |
| 738 | } |
| 739 | |
| 740 | static int cryptd_aead_setauthsize(struct crypto_aead *parent, |
| 741 | unsigned int authsize) |
| 742 | { |
| 743 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); |
| 744 | struct crypto_aead *child = ctx->child; |
| 745 | |
| 746 | return crypto_aead_setauthsize(child, authsize); |
| 747 | } |
| 748 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 749 | static void cryptd_aead_crypt(struct aead_request *req, |
| 750 | struct crypto_aead *child, |
| 751 | int err, |
| 752 | int (*crypt)(struct aead_request *req)) |
| 753 | { |
| 754 | struct cryptd_aead_request_ctx *rctx; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 755 | struct cryptd_aead_ctx *ctx; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 756 | crypto_completion_t compl; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 757 | struct crypto_aead *tfm; |
| 758 | int refcnt; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 759 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 760 | rctx = aead_request_ctx(req); |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 761 | compl = rctx->complete; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 762 | |
Herbert Xu | 31bd44e | 2016-08-25 16:49:51 +0800 | [diff] [blame] | 763 | tfm = crypto_aead_reqtfm(req); |
| 764 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 765 | if (unlikely(err == -EINPROGRESS)) |
| 766 | goto out; |
| 767 | aead_request_set_tfm(req, child); |
| 768 | err = crypt( req ); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 769 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 770 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 771 | ctx = crypto_aead_ctx(tfm); |
| 772 | refcnt = atomic_read(&ctx->refcnt); |
| 773 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 774 | local_bh_disable(); |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 775 | compl(&req->base, err); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 776 | local_bh_enable(); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 777 | |
| 778 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 779 | crypto_free_aead(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 780 | } |
| 781 | |
| 782 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) |
| 783 | { |
| 784 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 785 | struct crypto_aead *child = ctx->child; |
| 786 | struct aead_request *req; |
| 787 | |
| 788 | req = container_of(areq, struct aead_request, base); |
Herbert Xu | ba3749a | 2015-08-13 17:29:02 +0800 | [diff] [blame] | 789 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->encrypt); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 790 | } |
| 791 | |
| 792 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) |
| 793 | { |
| 794 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 795 | struct crypto_aead *child = ctx->child; |
| 796 | struct aead_request *req; |
| 797 | |
| 798 | req = container_of(areq, struct aead_request, base); |
Herbert Xu | ba3749a | 2015-08-13 17:29:02 +0800 | [diff] [blame] | 799 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->decrypt); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 800 | } |
| 801 | |
| 802 | static int cryptd_aead_enqueue(struct aead_request *req, |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 803 | crypto_completion_t compl) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 804 | { |
| 805 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); |
| 806 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
| 807 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); |
| 808 | |
| 809 | rctx->complete = req->base.complete; |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 810 | req->base.complete = compl; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 811 | return cryptd_enqueue_request(queue, &req->base); |
| 812 | } |
| 813 | |
| 814 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) |
| 815 | { |
| 816 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); |
| 817 | } |
| 818 | |
| 819 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) |
| 820 | { |
| 821 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); |
| 822 | } |
| 823 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 824 | static int cryptd_aead_init_tfm(struct crypto_aead *tfm) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 825 | { |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 826 | struct aead_instance *inst = aead_alg_instance(tfm); |
| 827 | struct aead_instance_ctx *ictx = aead_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 828 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 829 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 830 | struct crypto_aead *cipher; |
| 831 | |
| 832 | cipher = crypto_spawn_aead(spawn); |
| 833 | if (IS_ERR(cipher)) |
| 834 | return PTR_ERR(cipher); |
| 835 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 836 | ctx->child = cipher; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 837 | crypto_aead_set_reqsize( |
| 838 | tfm, max((unsigned)sizeof(struct cryptd_aead_request_ctx), |
| 839 | crypto_aead_reqsize(cipher))); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 840 | return 0; |
| 841 | } |
| 842 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 843 | static void cryptd_aead_exit_tfm(struct crypto_aead *tfm) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 844 | { |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 845 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 846 | crypto_free_aead(ctx->child); |
| 847 | } |
| 848 | |
| 849 | static int cryptd_create_aead(struct crypto_template *tmpl, |
| 850 | struct rtattr **tb, |
| 851 | struct cryptd_queue *queue) |
| 852 | { |
| 853 | struct aead_instance_ctx *ctx; |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 854 | struct aead_instance *inst; |
| 855 | struct aead_alg *alg; |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 856 | const char *name; |
| 857 | u32 type = 0; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 858 | u32 mask = CRYPTO_ALG_ASYNC; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 859 | int err; |
| 860 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 861 | cryptd_check_internal(tb, &type, &mask); |
| 862 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 863 | name = crypto_attr_alg_name(tb[1]); |
| 864 | if (IS_ERR(name)) |
| 865 | return PTR_ERR(name); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 866 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 867 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
| 868 | if (!inst) |
| 869 | return -ENOMEM; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 870 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 871 | ctx = aead_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 872 | ctx->queue = queue; |
| 873 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 874 | crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst)); |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 875 | err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 876 | if (err) |
| 877 | goto out_free_inst; |
| 878 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 879 | alg = crypto_spawn_aead_alg(&ctx->aead_spawn); |
| 880 | err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 881 | if (err) |
| 882 | goto out_drop_aead; |
| 883 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 884 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 885 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 886 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 887 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 888 | inst->alg.ivsize = crypto_aead_alg_ivsize(alg); |
| 889 | inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); |
| 890 | |
| 891 | inst->alg.init = cryptd_aead_init_tfm; |
| 892 | inst->alg.exit = cryptd_aead_exit_tfm; |
| 893 | inst->alg.setkey = cryptd_aead_setkey; |
| 894 | inst->alg.setauthsize = cryptd_aead_setauthsize; |
| 895 | inst->alg.encrypt = cryptd_aead_encrypt_enqueue; |
| 896 | inst->alg.decrypt = cryptd_aead_decrypt_enqueue; |
| 897 | |
| 898 | err = aead_register_instance(tmpl, inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 899 | if (err) { |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 900 | out_drop_aead: |
| 901 | crypto_drop_aead(&ctx->aead_spawn); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 902 | out_free_inst: |
| 903 | kfree(inst); |
| 904 | } |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 905 | return err; |
| 906 | } |
| 907 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 908 | static struct cryptd_queue queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 909 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 910 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 911 | { |
| 912 | struct crypto_attr_type *algt; |
| 913 | |
| 914 | algt = crypto_get_attr_type(tb); |
| 915 | if (IS_ERR(algt)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 916 | return PTR_ERR(algt); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 917 | |
| 918 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { |
| 919 | case CRYPTO_ALG_TYPE_BLKCIPHER: |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 920 | return cryptd_create_skcipher(tmpl, tb, &queue); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 921 | case CRYPTO_ALG_TYPE_DIGEST: |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 922 | return cryptd_create_hash(tmpl, tb, &queue); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 923 | case CRYPTO_ALG_TYPE_AEAD: |
| 924 | return cryptd_create_aead(tmpl, tb, &queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 925 | } |
| 926 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 927 | return -EINVAL; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 928 | } |
| 929 | |
| 930 | static void cryptd_free(struct crypto_instance *inst) |
| 931 | { |
| 932 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 933 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 934 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 935 | |
| 936 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { |
| 937 | case CRYPTO_ALG_TYPE_AHASH: |
| 938 | crypto_drop_shash(&hctx->spawn); |
| 939 | kfree(ahash_instance(inst)); |
| 940 | return; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 941 | case CRYPTO_ALG_TYPE_AEAD: |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 942 | crypto_drop_aead(&aead_ctx->aead_spawn); |
| 943 | kfree(aead_instance(inst)); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 944 | return; |
| 945 | default: |
| 946 | crypto_drop_spawn(&ctx->spawn); |
| 947 | kfree(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 948 | } |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 949 | } |
| 950 | |
| 951 | static struct crypto_template cryptd_tmpl = { |
| 952 | .name = "cryptd", |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 953 | .create = cryptd_create, |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 954 | .free = cryptd_free, |
| 955 | .module = THIS_MODULE, |
| 956 | }; |
| 957 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 958 | struct cryptd_skcipher *cryptd_alloc_skcipher(const char *alg_name, |
| 959 | u32 type, u32 mask) |
| 960 | { |
| 961 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
| 962 | struct cryptd_skcipher_ctx *ctx; |
| 963 | struct crypto_skcipher *tfm; |
| 964 | |
| 965 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 966 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 967 | return ERR_PTR(-EINVAL); |
| 968 | |
| 969 | tfm = crypto_alloc_skcipher(cryptd_alg_name, type, mask); |
| 970 | if (IS_ERR(tfm)) |
| 971 | return ERR_CAST(tfm); |
| 972 | |
| 973 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 974 | crypto_free_skcipher(tfm); |
| 975 | return ERR_PTR(-EINVAL); |
| 976 | } |
| 977 | |
| 978 | ctx = crypto_skcipher_ctx(tfm); |
| 979 | atomic_set(&ctx->refcnt, 1); |
| 980 | |
| 981 | return container_of(tfm, struct cryptd_skcipher, base); |
| 982 | } |
| 983 | EXPORT_SYMBOL_GPL(cryptd_alloc_skcipher); |
| 984 | |
| 985 | struct crypto_skcipher *cryptd_skcipher_child(struct cryptd_skcipher *tfm) |
| 986 | { |
| 987 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 988 | |
Kees Cook | 36b3875 | 2018-09-18 19:10:52 -0700 | [diff] [blame] | 989 | return &ctx->child->base; |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 990 | } |
| 991 | EXPORT_SYMBOL_GPL(cryptd_skcipher_child); |
| 992 | |
| 993 | bool cryptd_skcipher_queued(struct cryptd_skcipher *tfm) |
| 994 | { |
| 995 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 996 | |
| 997 | return atomic_read(&ctx->refcnt) - 1; |
| 998 | } |
| 999 | EXPORT_SYMBOL_GPL(cryptd_skcipher_queued); |
| 1000 | |
| 1001 | void cryptd_free_skcipher(struct cryptd_skcipher *tfm) |
| 1002 | { |
| 1003 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 1004 | |
| 1005 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1006 | crypto_free_skcipher(&tfm->base); |
| 1007 | } |
| 1008 | EXPORT_SYMBOL_GPL(cryptd_free_skcipher); |
| 1009 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1010 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
| 1011 | u32 type, u32 mask) |
| 1012 | { |
| 1013 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1014 | struct cryptd_hash_ctx *ctx; |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1015 | struct crypto_ahash *tfm; |
| 1016 | |
| 1017 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1018 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1019 | return ERR_PTR(-EINVAL); |
| 1020 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); |
| 1021 | if (IS_ERR(tfm)) |
| 1022 | return ERR_CAST(tfm); |
| 1023 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 1024 | crypto_free_ahash(tfm); |
| 1025 | return ERR_PTR(-EINVAL); |
| 1026 | } |
| 1027 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1028 | ctx = crypto_ahash_ctx(tfm); |
| 1029 | atomic_set(&ctx->refcnt, 1); |
| 1030 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1031 | return __cryptd_ahash_cast(tfm); |
| 1032 | } |
| 1033 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); |
| 1034 | |
| 1035 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) |
| 1036 | { |
| 1037 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1038 | |
| 1039 | return ctx->child; |
| 1040 | } |
| 1041 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); |
| 1042 | |
Huang Ying | 0e1227d | 2009-10-19 11:53:06 +0900 | [diff] [blame] | 1043 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
| 1044 | { |
| 1045 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 1046 | return &rctx->desc; |
| 1047 | } |
| 1048 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); |
| 1049 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1050 | bool cryptd_ahash_queued(struct cryptd_ahash *tfm) |
| 1051 | { |
| 1052 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1053 | |
| 1054 | return atomic_read(&ctx->refcnt) - 1; |
| 1055 | } |
| 1056 | EXPORT_SYMBOL_GPL(cryptd_ahash_queued); |
| 1057 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1058 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
| 1059 | { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1060 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1061 | |
| 1062 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1063 | crypto_free_ahash(&tfm->base); |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1064 | } |
| 1065 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
| 1066 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1067 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
| 1068 | u32 type, u32 mask) |
| 1069 | { |
| 1070 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1071 | struct cryptd_aead_ctx *ctx; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1072 | struct crypto_aead *tfm; |
| 1073 | |
| 1074 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1075 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1076 | return ERR_PTR(-EINVAL); |
| 1077 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); |
| 1078 | if (IS_ERR(tfm)) |
| 1079 | return ERR_CAST(tfm); |
| 1080 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 1081 | crypto_free_aead(tfm); |
| 1082 | return ERR_PTR(-EINVAL); |
| 1083 | } |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1084 | |
| 1085 | ctx = crypto_aead_ctx(tfm); |
| 1086 | atomic_set(&ctx->refcnt, 1); |
| 1087 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1088 | return __cryptd_aead_cast(tfm); |
| 1089 | } |
| 1090 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); |
| 1091 | |
| 1092 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) |
| 1093 | { |
| 1094 | struct cryptd_aead_ctx *ctx; |
| 1095 | ctx = crypto_aead_ctx(&tfm->base); |
| 1096 | return ctx->child; |
| 1097 | } |
| 1098 | EXPORT_SYMBOL_GPL(cryptd_aead_child); |
| 1099 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1100 | bool cryptd_aead_queued(struct cryptd_aead *tfm) |
| 1101 | { |
| 1102 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); |
| 1103 | |
| 1104 | return atomic_read(&ctx->refcnt) - 1; |
| 1105 | } |
| 1106 | EXPORT_SYMBOL_GPL(cryptd_aead_queued); |
| 1107 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1108 | void cryptd_free_aead(struct cryptd_aead *tfm) |
| 1109 | { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1110 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); |
| 1111 | |
| 1112 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1113 | crypto_free_aead(&tfm->base); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1114 | } |
| 1115 | EXPORT_SYMBOL_GPL(cryptd_free_aead); |
| 1116 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1117 | static int __init cryptd_init(void) |
| 1118 | { |
| 1119 | int err; |
| 1120 | |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 1121 | err = cryptd_init_queue(&queue, cryptd_max_cpu_qlen); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1122 | if (err) |
| 1123 | return err; |
| 1124 | |
| 1125 | err = crypto_register_template(&cryptd_tmpl); |
| 1126 | if (err) |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 1127 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1128 | |
| 1129 | return err; |
| 1130 | } |
| 1131 | |
| 1132 | static void __exit cryptd_exit(void) |
| 1133 | { |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 1134 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1135 | crypto_unregister_template(&cryptd_tmpl); |
| 1136 | } |
| 1137 | |
Herbert Xu | b2bac6ac | 2011-08-19 16:11:23 +0800 | [diff] [blame] | 1138 | subsys_initcall(cryptd_init); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1139 | module_exit(cryptd_exit); |
| 1140 | |
| 1141 | MODULE_LICENSE("GPL"); |
| 1142 | MODULE_DESCRIPTION("Software async crypto daemon"); |
Kees Cook | 4943ba1 | 2014-11-24 16:32:38 -0800 | [diff] [blame] | 1143 | MODULE_ALIAS_CRYPTO("cryptd"); |