Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Software async crypto daemon. |
| 3 | * |
| 4 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> |
| 5 | * |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 6 | * Added AEAD support to cryptd. |
| 7 | * Authors: Tadeusz Struk (tadeusz.struk@intel.com) |
| 8 | * Adrian Hoban <adrian.hoban@intel.com> |
| 9 | * Gabriele Paoloni <gabriele.paoloni@intel.com> |
| 10 | * Aidan O'Mahony (aidan.o.mahony@intel.com) |
| 11 | * Copyright (c) 2010, Intel Corporation. |
| 12 | * |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 13 | * This program is free software; you can redistribute it and/or modify it |
| 14 | * under the terms of the GNU General Public License as published by the Free |
| 15 | * Software Foundation; either version 2 of the License, or (at your option) |
| 16 | * any later version. |
| 17 | * |
| 18 | */ |
| 19 | |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 20 | #include <crypto/internal/hash.h> |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 21 | #include <crypto/internal/aead.h> |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 22 | #include <crypto/internal/skcipher.h> |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 23 | #include <crypto/cryptd.h> |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 24 | #include <crypto/crypto_wq.h> |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 25 | #include <linux/atomic.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 26 | #include <linux/err.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/kernel.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 29 | #include <linux/list.h> |
| 30 | #include <linux/module.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 31 | #include <linux/scatterlist.h> |
| 32 | #include <linux/sched.h> |
| 33 | #include <linux/slab.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 34 | |
Colin Ian King | eaf356e | 2017-11-30 11:26:14 +0000 | [diff] [blame] | 35 | static unsigned int cryptd_max_cpu_qlen = 1000; |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 36 | module_param(cryptd_max_cpu_qlen, uint, 0); |
| 37 | MODULE_PARM_DESC(cryptd_max_cpu_qlen, "Set cryptd Max queue depth"); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 38 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 39 | struct cryptd_cpu_queue { |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 40 | struct crypto_queue queue; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 41 | struct work_struct work; |
| 42 | }; |
| 43 | |
| 44 | struct cryptd_queue { |
Tejun Heo | a29d8b8 | 2010-02-02 14:39:15 +0900 | [diff] [blame] | 45 | struct cryptd_cpu_queue __percpu *cpu_queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 46 | }; |
| 47 | |
| 48 | struct cryptd_instance_ctx { |
| 49 | struct crypto_spawn spawn; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 50 | struct cryptd_queue *queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 51 | }; |
| 52 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 53 | struct skcipherd_instance_ctx { |
| 54 | struct crypto_skcipher_spawn spawn; |
| 55 | struct cryptd_queue *queue; |
| 56 | }; |
| 57 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 58 | struct hashd_instance_ctx { |
| 59 | struct crypto_shash_spawn spawn; |
| 60 | struct cryptd_queue *queue; |
| 61 | }; |
| 62 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 63 | struct aead_instance_ctx { |
| 64 | struct crypto_aead_spawn aead_spawn; |
| 65 | struct cryptd_queue *queue; |
| 66 | }; |
| 67 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 68 | struct cryptd_blkcipher_ctx { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 69 | atomic_t refcnt; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 70 | struct crypto_blkcipher *child; |
| 71 | }; |
| 72 | |
| 73 | struct cryptd_blkcipher_request_ctx { |
| 74 | crypto_completion_t complete; |
| 75 | }; |
| 76 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 77 | struct cryptd_skcipher_ctx { |
| 78 | atomic_t refcnt; |
| 79 | struct crypto_skcipher *child; |
| 80 | }; |
| 81 | |
| 82 | struct cryptd_skcipher_request_ctx { |
| 83 | crypto_completion_t complete; |
| 84 | }; |
| 85 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 86 | struct cryptd_hash_ctx { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 87 | atomic_t refcnt; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 88 | struct crypto_shash *child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 89 | }; |
| 90 | |
| 91 | struct cryptd_hash_request_ctx { |
| 92 | crypto_completion_t complete; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 93 | struct shash_desc desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 94 | }; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 95 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 96 | struct cryptd_aead_ctx { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 97 | atomic_t refcnt; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 98 | struct crypto_aead *child; |
| 99 | }; |
| 100 | |
| 101 | struct cryptd_aead_request_ctx { |
| 102 | crypto_completion_t complete; |
| 103 | }; |
| 104 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 105 | static void cryptd_queue_worker(struct work_struct *work); |
| 106 | |
| 107 | static int cryptd_init_queue(struct cryptd_queue *queue, |
| 108 | unsigned int max_cpu_qlen) |
| 109 | { |
| 110 | int cpu; |
| 111 | struct cryptd_cpu_queue *cpu_queue; |
| 112 | |
| 113 | queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); |
| 114 | if (!queue->cpu_queue) |
| 115 | return -ENOMEM; |
| 116 | for_each_possible_cpu(cpu) { |
| 117 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 118 | crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); |
| 119 | INIT_WORK(&cpu_queue->work, cryptd_queue_worker); |
| 120 | } |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 121 | 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] | 122 | return 0; |
| 123 | } |
| 124 | |
| 125 | static void cryptd_fini_queue(struct cryptd_queue *queue) |
| 126 | { |
| 127 | int cpu; |
| 128 | struct cryptd_cpu_queue *cpu_queue; |
| 129 | |
| 130 | for_each_possible_cpu(cpu) { |
| 131 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 132 | BUG_ON(cpu_queue->queue.qlen); |
| 133 | } |
| 134 | free_percpu(queue->cpu_queue); |
| 135 | } |
| 136 | |
| 137 | static int cryptd_enqueue_request(struct cryptd_queue *queue, |
| 138 | struct crypto_async_request *request) |
| 139 | { |
| 140 | int cpu, err; |
| 141 | struct cryptd_cpu_queue *cpu_queue; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 142 | atomic_t *refcnt; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 143 | |
| 144 | cpu = get_cpu(); |
Christoph Lameter | 0b44f48 | 2009-10-03 19:48:23 +0900 | [diff] [blame] | 145 | cpu_queue = this_cpu_ptr(queue->cpu_queue); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 146 | err = crypto_enqueue_request(&cpu_queue->queue, request); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 147 | |
| 148 | refcnt = crypto_tfm_ctx(request->tfm); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 149 | |
Gilad Ben-Yossef | 6b80ea3 | 2017-10-18 08:00:33 +0100 | [diff] [blame] | 150 | if (err == -ENOSPC) |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 151 | goto out_put_cpu; |
| 152 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 153 | queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 154 | |
| 155 | if (!atomic_read(refcnt)) |
| 156 | goto out_put_cpu; |
| 157 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 158 | atomic_inc(refcnt); |
| 159 | |
| 160 | out_put_cpu: |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 161 | put_cpu(); |
| 162 | |
| 163 | return err; |
| 164 | } |
| 165 | |
| 166 | /* Called in workqueue context, do one real cryption work (via |
| 167 | * req->complete) and reschedule itself if there are more work to |
| 168 | * do. */ |
| 169 | static void cryptd_queue_worker(struct work_struct *work) |
| 170 | { |
| 171 | struct cryptd_cpu_queue *cpu_queue; |
| 172 | struct crypto_async_request *req, *backlog; |
| 173 | |
| 174 | cpu_queue = container_of(work, struct cryptd_cpu_queue, work); |
Jussi Kivilinna | 9efade1 | 2012-10-21 20:42:28 +0300 | [diff] [blame] | 175 | /* |
| 176 | * Only handle one request at a time to avoid hogging crypto workqueue. |
| 177 | * preempt_disable/enable is used to prevent being preempted by |
| 178 | * cryptd_enqueue_request(). local_bh_disable/enable is used to prevent |
| 179 | * cryptd_enqueue_request() being accessed from software interrupts. |
| 180 | */ |
| 181 | local_bh_disable(); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 182 | preempt_disable(); |
| 183 | backlog = crypto_get_backlog(&cpu_queue->queue); |
| 184 | req = crypto_dequeue_request(&cpu_queue->queue); |
| 185 | preempt_enable(); |
Jussi Kivilinna | 9efade1 | 2012-10-21 20:42:28 +0300 | [diff] [blame] | 186 | local_bh_enable(); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 187 | |
| 188 | if (!req) |
| 189 | return; |
| 190 | |
| 191 | if (backlog) |
| 192 | backlog->complete(backlog, -EINPROGRESS); |
| 193 | req->complete(req, 0); |
| 194 | |
| 195 | if (cpu_queue->queue.qlen) |
| 196 | queue_work(kcrypto_wq, &cpu_queue->work); |
| 197 | } |
| 198 | |
| 199 | static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 200 | { |
| 201 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 202 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 203 | return ictx->queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 204 | } |
| 205 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 206 | static inline void cryptd_check_internal(struct rtattr **tb, u32 *type, |
| 207 | u32 *mask) |
| 208 | { |
| 209 | struct crypto_attr_type *algt; |
| 210 | |
| 211 | algt = crypto_get_attr_type(tb); |
| 212 | if (IS_ERR(algt)) |
| 213 | return; |
Herbert Xu | f6da320 | 2015-07-09 07:17:19 +0800 | [diff] [blame] | 214 | |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 215 | *type |= algt->type & CRYPTO_ALG_INTERNAL; |
| 216 | *mask |= algt->mask & CRYPTO_ALG_INTERNAL; |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 217 | } |
| 218 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 219 | static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, |
| 220 | const u8 *key, unsigned int keylen) |
| 221 | { |
| 222 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); |
| 223 | struct crypto_blkcipher *child = ctx->child; |
| 224 | int err; |
| 225 | |
| 226 | crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 227 | crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & |
| 228 | CRYPTO_TFM_REQ_MASK); |
| 229 | err = crypto_blkcipher_setkey(child, key, keylen); |
| 230 | crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & |
| 231 | CRYPTO_TFM_RES_MASK); |
| 232 | return err; |
| 233 | } |
| 234 | |
| 235 | static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, |
| 236 | struct crypto_blkcipher *child, |
| 237 | int err, |
| 238 | int (*crypt)(struct blkcipher_desc *desc, |
| 239 | struct scatterlist *dst, |
| 240 | struct scatterlist *src, |
| 241 | unsigned int len)) |
| 242 | { |
| 243 | struct cryptd_blkcipher_request_ctx *rctx; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 244 | struct cryptd_blkcipher_ctx *ctx; |
| 245 | struct crypto_ablkcipher *tfm; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 246 | struct blkcipher_desc desc; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 247 | int refcnt; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 248 | |
| 249 | rctx = ablkcipher_request_ctx(req); |
| 250 | |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 251 | if (unlikely(err == -EINPROGRESS)) |
| 252 | goto out; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 253 | |
| 254 | desc.tfm = child; |
| 255 | desc.info = req->info; |
| 256 | desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
| 257 | |
| 258 | err = crypt(&desc, req->dst, req->src, req->nbytes); |
| 259 | |
| 260 | req->base.complete = rctx->complete; |
| 261 | |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 262 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 263 | tfm = crypto_ablkcipher_reqtfm(req); |
| 264 | ctx = crypto_ablkcipher_ctx(tfm); |
| 265 | refcnt = atomic_read(&ctx->refcnt); |
| 266 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 267 | local_bh_disable(); |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 268 | rctx->complete(&req->base, err); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 269 | local_bh_enable(); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 270 | |
| 271 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 272 | crypto_free_ablkcipher(tfm); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 273 | } |
| 274 | |
| 275 | static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) |
| 276 | { |
| 277 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); |
| 278 | struct crypto_blkcipher *child = ctx->child; |
| 279 | |
| 280 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, |
| 281 | crypto_blkcipher_crt(child)->encrypt); |
| 282 | } |
| 283 | |
| 284 | static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) |
| 285 | { |
| 286 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); |
| 287 | struct crypto_blkcipher *child = ctx->child; |
| 288 | |
| 289 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, |
| 290 | crypto_blkcipher_crt(child)->decrypt); |
| 291 | } |
| 292 | |
| 293 | static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 294 | crypto_completion_t compl) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 295 | { |
| 296 | struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); |
| 297 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 298 | struct cryptd_queue *queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 299 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 300 | queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 301 | rctx->complete = req->base.complete; |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 302 | req->base.complete = compl; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 303 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 304 | return cryptd_enqueue_request(queue, &req->base); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 305 | } |
| 306 | |
| 307 | static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) |
| 308 | { |
| 309 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); |
| 310 | } |
| 311 | |
| 312 | static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) |
| 313 | { |
| 314 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); |
| 315 | } |
| 316 | |
| 317 | static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) |
| 318 | { |
| 319 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 320 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 321 | struct crypto_spawn *spawn = &ictx->spawn; |
| 322 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
| 323 | struct crypto_blkcipher *cipher; |
| 324 | |
| 325 | cipher = crypto_spawn_blkcipher(spawn); |
| 326 | if (IS_ERR(cipher)) |
| 327 | return PTR_ERR(cipher); |
| 328 | |
| 329 | ctx->child = cipher; |
| 330 | tfm->crt_ablkcipher.reqsize = |
| 331 | sizeof(struct cryptd_blkcipher_request_ctx); |
| 332 | return 0; |
| 333 | } |
| 334 | |
| 335 | static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) |
| 336 | { |
| 337 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 338 | |
| 339 | crypto_free_blkcipher(ctx->child); |
| 340 | } |
| 341 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 342 | static int cryptd_init_instance(struct crypto_instance *inst, |
| 343 | struct crypto_alg *alg) |
| 344 | { |
| 345 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, |
| 346 | "cryptd(%s)", |
| 347 | alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) |
| 348 | return -ENAMETOOLONG; |
| 349 | |
| 350 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); |
| 351 | |
| 352 | inst->alg.cra_priority = alg->cra_priority + 50; |
| 353 | inst->alg.cra_blocksize = alg->cra_blocksize; |
| 354 | inst->alg.cra_alignmask = alg->cra_alignmask; |
| 355 | |
| 356 | return 0; |
| 357 | } |
| 358 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 359 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
| 360 | unsigned int tail) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 361 | { |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 362 | char *p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 363 | struct crypto_instance *inst; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 364 | int err; |
| 365 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 366 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
| 367 | if (!p) |
| 368 | return ERR_PTR(-ENOMEM); |
| 369 | |
| 370 | inst = (void *)(p + head); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 371 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 372 | err = cryptd_init_instance(inst, alg); |
| 373 | if (err) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 374 | goto out_free_inst; |
| 375 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 376 | out: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 377 | return p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 378 | |
| 379 | out_free_inst: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 380 | kfree(p); |
| 381 | p = ERR_PTR(err); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 382 | goto out; |
| 383 | } |
| 384 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 385 | static int cryptd_create_blkcipher(struct crypto_template *tmpl, |
| 386 | struct rtattr **tb, |
| 387 | struct cryptd_queue *queue) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 388 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 389 | struct cryptd_instance_ctx *ctx; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 390 | struct crypto_instance *inst; |
| 391 | struct crypto_alg *alg; |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 392 | u32 type = CRYPTO_ALG_TYPE_BLKCIPHER; |
| 393 | u32 mask = CRYPTO_ALG_TYPE_MASK; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 394 | int err; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 395 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 396 | cryptd_check_internal(tb, &type, &mask); |
| 397 | |
| 398 | alg = crypto_get_attr_alg(tb, type, mask); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 399 | if (IS_ERR(alg)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 400 | return PTR_ERR(alg); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 401 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 402 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
Steffen Klassert | 05ed875 | 2009-07-15 16:51:04 +0800 | [diff] [blame] | 403 | err = PTR_ERR(inst); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 404 | if (IS_ERR(inst)) |
| 405 | goto out_put_alg; |
| 406 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 407 | ctx = crypto_instance_ctx(inst); |
| 408 | ctx->queue = queue; |
| 409 | |
| 410 | err = crypto_init_spawn(&ctx->spawn, alg, inst, |
| 411 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); |
| 412 | if (err) |
| 413 | goto out_free_inst; |
| 414 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 415 | type = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
| 416 | if (alg->cra_flags & CRYPTO_ALG_INTERNAL) |
| 417 | type |= CRYPTO_ALG_INTERNAL; |
| 418 | inst->alg.cra_flags = type; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 419 | inst->alg.cra_type = &crypto_ablkcipher_type; |
| 420 | |
| 421 | inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; |
| 422 | inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; |
| 423 | inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; |
| 424 | |
Herbert Xu | 927eead | 2007-11-27 21:15:31 +0800 | [diff] [blame] | 425 | inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
| 426 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 427 | inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); |
| 428 | |
| 429 | inst->alg.cra_init = cryptd_blkcipher_init_tfm; |
| 430 | inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; |
| 431 | |
| 432 | inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; |
| 433 | inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; |
| 434 | inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; |
| 435 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 436 | err = crypto_register_instance(tmpl, inst); |
| 437 | if (err) { |
| 438 | crypto_drop_spawn(&ctx->spawn); |
| 439 | out_free_inst: |
| 440 | kfree(inst); |
| 441 | } |
| 442 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 443 | out_put_alg: |
| 444 | crypto_mod_put(alg); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 445 | return err; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 446 | } |
| 447 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 448 | static int cryptd_skcipher_setkey(struct crypto_skcipher *parent, |
| 449 | const u8 *key, unsigned int keylen) |
| 450 | { |
| 451 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(parent); |
| 452 | struct crypto_skcipher *child = ctx->child; |
| 453 | int err; |
| 454 | |
| 455 | crypto_skcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 456 | crypto_skcipher_set_flags(child, crypto_skcipher_get_flags(parent) & |
| 457 | CRYPTO_TFM_REQ_MASK); |
| 458 | err = crypto_skcipher_setkey(child, key, keylen); |
| 459 | crypto_skcipher_set_flags(parent, crypto_skcipher_get_flags(child) & |
| 460 | CRYPTO_TFM_RES_MASK); |
| 461 | return err; |
| 462 | } |
| 463 | |
| 464 | static void cryptd_skcipher_complete(struct skcipher_request *req, int err) |
| 465 | { |
| 466 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 467 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 468 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 469 | int refcnt = atomic_read(&ctx->refcnt); |
| 470 | |
| 471 | local_bh_disable(); |
| 472 | rctx->complete(&req->base, err); |
| 473 | local_bh_enable(); |
| 474 | |
| 475 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 476 | crypto_free_skcipher(tfm); |
| 477 | } |
| 478 | |
| 479 | static void cryptd_skcipher_encrypt(struct crypto_async_request *base, |
| 480 | int err) |
| 481 | { |
| 482 | struct skcipher_request *req = skcipher_request_cast(base); |
| 483 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 484 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 485 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 486 | struct crypto_skcipher *child = ctx->child; |
| 487 | SKCIPHER_REQUEST_ON_STACK(subreq, child); |
| 488 | |
| 489 | if (unlikely(err == -EINPROGRESS)) |
| 490 | goto out; |
| 491 | |
| 492 | skcipher_request_set_tfm(subreq, child); |
| 493 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
| 494 | NULL, NULL); |
| 495 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, |
| 496 | req->iv); |
| 497 | |
| 498 | err = crypto_skcipher_encrypt(subreq); |
| 499 | skcipher_request_zero(subreq); |
| 500 | |
| 501 | req->base.complete = rctx->complete; |
| 502 | |
| 503 | out: |
| 504 | cryptd_skcipher_complete(req, err); |
| 505 | } |
| 506 | |
| 507 | static void cryptd_skcipher_decrypt(struct crypto_async_request *base, |
| 508 | int err) |
| 509 | { |
| 510 | struct skcipher_request *req = skcipher_request_cast(base); |
| 511 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 512 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 513 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 514 | struct crypto_skcipher *child = ctx->child; |
| 515 | SKCIPHER_REQUEST_ON_STACK(subreq, child); |
| 516 | |
| 517 | if (unlikely(err == -EINPROGRESS)) |
| 518 | goto out; |
| 519 | |
| 520 | skcipher_request_set_tfm(subreq, child); |
| 521 | skcipher_request_set_callback(subreq, CRYPTO_TFM_REQ_MAY_SLEEP, |
| 522 | NULL, NULL); |
| 523 | skcipher_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, |
| 524 | req->iv); |
| 525 | |
| 526 | err = crypto_skcipher_decrypt(subreq); |
| 527 | skcipher_request_zero(subreq); |
| 528 | |
| 529 | req->base.complete = rctx->complete; |
| 530 | |
| 531 | out: |
| 532 | cryptd_skcipher_complete(req, err); |
| 533 | } |
| 534 | |
| 535 | static int cryptd_skcipher_enqueue(struct skcipher_request *req, |
| 536 | crypto_completion_t compl) |
| 537 | { |
| 538 | struct cryptd_skcipher_request_ctx *rctx = skcipher_request_ctx(req); |
| 539 | struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req); |
| 540 | struct cryptd_queue *queue; |
| 541 | |
| 542 | queue = cryptd_get_queue(crypto_skcipher_tfm(tfm)); |
| 543 | rctx->complete = req->base.complete; |
| 544 | req->base.complete = compl; |
| 545 | |
| 546 | return cryptd_enqueue_request(queue, &req->base); |
| 547 | } |
| 548 | |
| 549 | static int cryptd_skcipher_encrypt_enqueue(struct skcipher_request *req) |
| 550 | { |
| 551 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_encrypt); |
| 552 | } |
| 553 | |
| 554 | static int cryptd_skcipher_decrypt_enqueue(struct skcipher_request *req) |
| 555 | { |
| 556 | return cryptd_skcipher_enqueue(req, cryptd_skcipher_decrypt); |
| 557 | } |
| 558 | |
| 559 | static int cryptd_skcipher_init_tfm(struct crypto_skcipher *tfm) |
| 560 | { |
| 561 | struct skcipher_instance *inst = skcipher_alg_instance(tfm); |
| 562 | struct skcipherd_instance_ctx *ictx = skcipher_instance_ctx(inst); |
| 563 | struct crypto_skcipher_spawn *spawn = &ictx->spawn; |
| 564 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 565 | struct crypto_skcipher *cipher; |
| 566 | |
| 567 | cipher = crypto_spawn_skcipher(spawn); |
| 568 | if (IS_ERR(cipher)) |
| 569 | return PTR_ERR(cipher); |
| 570 | |
| 571 | ctx->child = cipher; |
| 572 | crypto_skcipher_set_reqsize( |
| 573 | tfm, sizeof(struct cryptd_skcipher_request_ctx)); |
| 574 | return 0; |
| 575 | } |
| 576 | |
| 577 | static void cryptd_skcipher_exit_tfm(struct crypto_skcipher *tfm) |
| 578 | { |
| 579 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(tfm); |
| 580 | |
| 581 | crypto_free_skcipher(ctx->child); |
| 582 | } |
| 583 | |
| 584 | static void cryptd_skcipher_free(struct skcipher_instance *inst) |
| 585 | { |
| 586 | struct skcipherd_instance_ctx *ctx = skcipher_instance_ctx(inst); |
| 587 | |
| 588 | crypto_drop_skcipher(&ctx->spawn); |
| 589 | } |
| 590 | |
| 591 | static int cryptd_create_skcipher(struct crypto_template *tmpl, |
| 592 | struct rtattr **tb, |
| 593 | struct cryptd_queue *queue) |
| 594 | { |
| 595 | struct skcipherd_instance_ctx *ctx; |
| 596 | struct skcipher_instance *inst; |
| 597 | struct skcipher_alg *alg; |
| 598 | const char *name; |
| 599 | u32 type; |
| 600 | u32 mask; |
| 601 | int err; |
| 602 | |
| 603 | type = 0; |
| 604 | mask = CRYPTO_ALG_ASYNC; |
| 605 | |
| 606 | cryptd_check_internal(tb, &type, &mask); |
| 607 | |
| 608 | name = crypto_attr_alg_name(tb[1]); |
| 609 | if (IS_ERR(name)) |
| 610 | return PTR_ERR(name); |
| 611 | |
| 612 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
| 613 | if (!inst) |
| 614 | return -ENOMEM; |
| 615 | |
| 616 | ctx = skcipher_instance_ctx(inst); |
| 617 | ctx->queue = queue; |
| 618 | |
| 619 | crypto_set_skcipher_spawn(&ctx->spawn, skcipher_crypto_instance(inst)); |
| 620 | err = crypto_grab_skcipher(&ctx->spawn, name, type, mask); |
| 621 | if (err) |
| 622 | goto out_free_inst; |
| 623 | |
| 624 | alg = crypto_spawn_skcipher_alg(&ctx->spawn); |
| 625 | err = cryptd_init_instance(skcipher_crypto_instance(inst), &alg->base); |
| 626 | if (err) |
| 627 | goto out_drop_skcipher; |
| 628 | |
| 629 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
| 630 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
| 631 | |
| 632 | inst->alg.ivsize = crypto_skcipher_alg_ivsize(alg); |
| 633 | inst->alg.chunksize = crypto_skcipher_alg_chunksize(alg); |
| 634 | inst->alg.min_keysize = crypto_skcipher_alg_min_keysize(alg); |
| 635 | inst->alg.max_keysize = crypto_skcipher_alg_max_keysize(alg); |
| 636 | |
| 637 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_skcipher_ctx); |
| 638 | |
| 639 | inst->alg.init = cryptd_skcipher_init_tfm; |
| 640 | inst->alg.exit = cryptd_skcipher_exit_tfm; |
| 641 | |
| 642 | inst->alg.setkey = cryptd_skcipher_setkey; |
| 643 | inst->alg.encrypt = cryptd_skcipher_encrypt_enqueue; |
| 644 | inst->alg.decrypt = cryptd_skcipher_decrypt_enqueue; |
| 645 | |
| 646 | inst->free = cryptd_skcipher_free; |
| 647 | |
| 648 | err = skcipher_register_instance(tmpl, inst); |
| 649 | if (err) { |
| 650 | out_drop_skcipher: |
| 651 | crypto_drop_skcipher(&ctx->spawn); |
| 652 | out_free_inst: |
| 653 | kfree(inst); |
| 654 | } |
| 655 | return err; |
| 656 | } |
| 657 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 658 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
| 659 | { |
| 660 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 661 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 662 | struct crypto_shash_spawn *spawn = &ictx->spawn; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 663 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 664 | struct crypto_shash *hash; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 665 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 666 | hash = crypto_spawn_shash(spawn); |
| 667 | if (IS_ERR(hash)) |
| 668 | return PTR_ERR(hash); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 669 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 670 | ctx->child = hash; |
Herbert Xu | 0d6669e | 2009-07-12 23:06:33 +0800 | [diff] [blame] | 671 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
| 672 | sizeof(struct cryptd_hash_request_ctx) + |
| 673 | crypto_shash_descsize(hash)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 674 | return 0; |
| 675 | } |
| 676 | |
| 677 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) |
| 678 | { |
| 679 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 680 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 681 | crypto_free_shash(ctx->child); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 682 | } |
| 683 | |
| 684 | static int cryptd_hash_setkey(struct crypto_ahash *parent, |
| 685 | const u8 *key, unsigned int keylen) |
| 686 | { |
| 687 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 688 | struct crypto_shash *child = ctx->child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 689 | int err; |
| 690 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 691 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 692 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & |
| 693 | CRYPTO_TFM_REQ_MASK); |
| 694 | err = crypto_shash_setkey(child, key, keylen); |
| 695 | crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & |
| 696 | CRYPTO_TFM_RES_MASK); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 697 | return err; |
| 698 | } |
| 699 | |
| 700 | static int cryptd_hash_enqueue(struct ahash_request *req, |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 701 | crypto_completion_t compl) |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 702 | { |
| 703 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 704 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 705 | struct cryptd_queue *queue = |
| 706 | cryptd_get_queue(crypto_ahash_tfm(tfm)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 707 | |
| 708 | rctx->complete = req->base.complete; |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 709 | req->base.complete = compl; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 710 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 711 | return cryptd_enqueue_request(queue, &req->base); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 712 | } |
| 713 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 714 | static void cryptd_hash_complete(struct ahash_request *req, int err) |
| 715 | { |
| 716 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 717 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 718 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 719 | int refcnt = atomic_read(&ctx->refcnt); |
| 720 | |
| 721 | local_bh_disable(); |
| 722 | rctx->complete(&req->base, err); |
| 723 | local_bh_enable(); |
| 724 | |
| 725 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 726 | crypto_free_ahash(tfm); |
| 727 | } |
| 728 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 729 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) |
| 730 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 731 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 732 | struct crypto_shash *child = ctx->child; |
| 733 | struct ahash_request *req = ahash_request_cast(req_async); |
| 734 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 735 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 736 | |
| 737 | if (unlikely(err == -EINPROGRESS)) |
| 738 | goto out; |
| 739 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 740 | desc->tfm = child; |
| 741 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 742 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 743 | err = crypto_shash_init(desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 744 | |
| 745 | req->base.complete = rctx->complete; |
| 746 | |
| 747 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 748 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 749 | } |
| 750 | |
| 751 | static int cryptd_hash_init_enqueue(struct ahash_request *req) |
| 752 | { |
| 753 | return cryptd_hash_enqueue(req, cryptd_hash_init); |
| 754 | } |
| 755 | |
| 756 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) |
| 757 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 758 | struct ahash_request *req = ahash_request_cast(req_async); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 759 | struct cryptd_hash_request_ctx *rctx; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 760 | |
| 761 | rctx = ahash_request_ctx(req); |
| 762 | |
| 763 | if (unlikely(err == -EINPROGRESS)) |
| 764 | goto out; |
| 765 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 766 | err = shash_ahash_update(req, &rctx->desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 767 | |
| 768 | req->base.complete = rctx->complete; |
| 769 | |
| 770 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 771 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 772 | } |
| 773 | |
| 774 | static int cryptd_hash_update_enqueue(struct ahash_request *req) |
| 775 | { |
| 776 | return cryptd_hash_enqueue(req, cryptd_hash_update); |
| 777 | } |
| 778 | |
| 779 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) |
| 780 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 781 | struct ahash_request *req = ahash_request_cast(req_async); |
| 782 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 783 | |
| 784 | if (unlikely(err == -EINPROGRESS)) |
| 785 | goto out; |
| 786 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 787 | err = crypto_shash_final(&rctx->desc, req->result); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 788 | |
| 789 | req->base.complete = rctx->complete; |
| 790 | |
| 791 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 792 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 793 | } |
| 794 | |
| 795 | static int cryptd_hash_final_enqueue(struct ahash_request *req) |
| 796 | { |
| 797 | return cryptd_hash_enqueue(req, cryptd_hash_final); |
| 798 | } |
| 799 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 800 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
| 801 | { |
| 802 | struct ahash_request *req = ahash_request_cast(req_async); |
| 803 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 804 | |
| 805 | if (unlikely(err == -EINPROGRESS)) |
| 806 | goto out; |
| 807 | |
| 808 | err = shash_ahash_finup(req, &rctx->desc); |
| 809 | |
| 810 | req->base.complete = rctx->complete; |
| 811 | |
| 812 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 813 | cryptd_hash_complete(req, err); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 814 | } |
| 815 | |
| 816 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) |
| 817 | { |
| 818 | return cryptd_hash_enqueue(req, cryptd_hash_finup); |
| 819 | } |
| 820 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 821 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
| 822 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 823 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 824 | struct crypto_shash *child = ctx->child; |
| 825 | struct ahash_request *req = ahash_request_cast(req_async); |
| 826 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 827 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 828 | |
| 829 | if (unlikely(err == -EINPROGRESS)) |
| 830 | goto out; |
| 831 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 832 | desc->tfm = child; |
| 833 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 834 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 835 | err = shash_ahash_digest(req, desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 836 | |
| 837 | req->base.complete = rctx->complete; |
| 838 | |
| 839 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 840 | cryptd_hash_complete(req, err); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 841 | } |
| 842 | |
| 843 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) |
| 844 | { |
| 845 | return cryptd_hash_enqueue(req, cryptd_hash_digest); |
| 846 | } |
| 847 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 848 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
| 849 | { |
| 850 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 851 | |
| 852 | return crypto_shash_export(&rctx->desc, out); |
| 853 | } |
| 854 | |
| 855 | static int cryptd_hash_import(struct ahash_request *req, const void *in) |
| 856 | { |
Ard Biesheuvel | 0bd2223 | 2016-09-01 14:25:43 +0100 | [diff] [blame] | 857 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
| 858 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(tfm); |
| 859 | struct shash_desc *desc = cryptd_shash_desc(req); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 860 | |
Ard Biesheuvel | 0bd2223 | 2016-09-01 14:25:43 +0100 | [diff] [blame] | 861 | desc->tfm = ctx->child; |
| 862 | desc->flags = req->base.flags; |
| 863 | |
| 864 | return crypto_shash_import(desc, in); |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 865 | } |
| 866 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 867 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
| 868 | struct cryptd_queue *queue) |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 869 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 870 | struct hashd_instance_ctx *ctx; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 871 | struct ahash_instance *inst; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 872 | struct shash_alg *salg; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 873 | struct crypto_alg *alg; |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 874 | u32 type = 0; |
| 875 | u32 mask = 0; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 876 | int err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 877 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 878 | cryptd_check_internal(tb, &type, &mask); |
| 879 | |
| 880 | salg = shash_attr_alg(tb[1], type, mask); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 881 | if (IS_ERR(salg)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 882 | return PTR_ERR(salg); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 883 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 884 | alg = &salg->base; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 885 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
| 886 | sizeof(*ctx)); |
Steffen Klassert | 05ed875 | 2009-07-15 16:51:04 +0800 | [diff] [blame] | 887 | err = PTR_ERR(inst); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 888 | if (IS_ERR(inst)) |
| 889 | goto out_put_alg; |
| 890 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 891 | ctx = ahash_instance_ctx(inst); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 892 | ctx->queue = queue; |
| 893 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 894 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
| 895 | ahash_crypto_instance(inst)); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 896 | if (err) |
| 897 | goto out_free_inst; |
| 898 | |
Eric Biggers | a208fa8 | 2018-01-03 11:16:26 -0800 | [diff] [blame] | 899 | inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC | |
| 900 | (alg->cra_flags & (CRYPTO_ALG_INTERNAL | |
| 901 | CRYPTO_ALG_OPTIONAL_KEY)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 902 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 903 | inst->alg.halg.digestsize = salg->digestsize; |
Wang, Rui Y | 1a07834 | 2015-11-29 22:45:34 +0800 | [diff] [blame] | 904 | inst->alg.halg.statesize = salg->statesize; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 905 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 906 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 907 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
| 908 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 909 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 910 | inst->alg.init = cryptd_hash_init_enqueue; |
| 911 | inst->alg.update = cryptd_hash_update_enqueue; |
| 912 | inst->alg.final = cryptd_hash_final_enqueue; |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 913 | inst->alg.finup = cryptd_hash_finup_enqueue; |
| 914 | inst->alg.export = cryptd_hash_export; |
| 915 | inst->alg.import = cryptd_hash_import; |
Eric Biggers | 841a3ff | 2018-01-03 11:16:23 -0800 | [diff] [blame] | 916 | if (crypto_shash_alg_has_setkey(salg)) |
| 917 | inst->alg.setkey = cryptd_hash_setkey; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 918 | inst->alg.digest = cryptd_hash_digest_enqueue; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 919 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 920 | err = ahash_register_instance(tmpl, inst); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 921 | if (err) { |
| 922 | crypto_drop_shash(&ctx->spawn); |
| 923 | out_free_inst: |
| 924 | kfree(inst); |
| 925 | } |
| 926 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 927 | out_put_alg: |
| 928 | crypto_mod_put(alg); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 929 | return err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 930 | } |
| 931 | |
Herbert Xu | 92b9876 | 2015-05-28 22:08:01 +0800 | [diff] [blame] | 932 | static int cryptd_aead_setkey(struct crypto_aead *parent, |
| 933 | const u8 *key, unsigned int keylen) |
| 934 | { |
| 935 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); |
| 936 | struct crypto_aead *child = ctx->child; |
| 937 | |
| 938 | return crypto_aead_setkey(child, key, keylen); |
| 939 | } |
| 940 | |
| 941 | static int cryptd_aead_setauthsize(struct crypto_aead *parent, |
| 942 | unsigned int authsize) |
| 943 | { |
| 944 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(parent); |
| 945 | struct crypto_aead *child = ctx->child; |
| 946 | |
| 947 | return crypto_aead_setauthsize(child, authsize); |
| 948 | } |
| 949 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 950 | static void cryptd_aead_crypt(struct aead_request *req, |
| 951 | struct crypto_aead *child, |
| 952 | int err, |
| 953 | int (*crypt)(struct aead_request *req)) |
| 954 | { |
| 955 | struct cryptd_aead_request_ctx *rctx; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 956 | struct cryptd_aead_ctx *ctx; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 957 | crypto_completion_t compl; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 958 | struct crypto_aead *tfm; |
| 959 | int refcnt; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 960 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 961 | rctx = aead_request_ctx(req); |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 962 | compl = rctx->complete; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 963 | |
Herbert Xu | 31bd44e | 2016-08-25 16:49:51 +0800 | [diff] [blame] | 964 | tfm = crypto_aead_reqtfm(req); |
| 965 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 966 | if (unlikely(err == -EINPROGRESS)) |
| 967 | goto out; |
| 968 | aead_request_set_tfm(req, child); |
| 969 | err = crypt( req ); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 970 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 971 | out: |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 972 | ctx = crypto_aead_ctx(tfm); |
| 973 | refcnt = atomic_read(&ctx->refcnt); |
| 974 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 975 | local_bh_disable(); |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 976 | compl(&req->base, err); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 977 | local_bh_enable(); |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 978 | |
| 979 | if (err != -EINPROGRESS && refcnt && atomic_dec_and_test(&ctx->refcnt)) |
| 980 | crypto_free_aead(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 981 | } |
| 982 | |
| 983 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) |
| 984 | { |
| 985 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 986 | struct crypto_aead *child = ctx->child; |
| 987 | struct aead_request *req; |
| 988 | |
| 989 | req = container_of(areq, struct aead_request, base); |
Herbert Xu | ba3749a | 2015-08-13 17:29:02 +0800 | [diff] [blame] | 990 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->encrypt); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 991 | } |
| 992 | |
| 993 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) |
| 994 | { |
| 995 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 996 | struct crypto_aead *child = ctx->child; |
| 997 | struct aead_request *req; |
| 998 | |
| 999 | req = container_of(areq, struct aead_request, base); |
Herbert Xu | ba3749a | 2015-08-13 17:29:02 +0800 | [diff] [blame] | 1000 | cryptd_aead_crypt(req, child, err, crypto_aead_alg(child)->decrypt); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1001 | } |
| 1002 | |
| 1003 | static int cryptd_aead_enqueue(struct aead_request *req, |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 1004 | crypto_completion_t compl) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1005 | { |
| 1006 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); |
| 1007 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
| 1008 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); |
| 1009 | |
| 1010 | rctx->complete = req->base.complete; |
Mark Rustad | 3e3dc25 | 2014-07-25 02:53:38 -0700 | [diff] [blame] | 1011 | req->base.complete = compl; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1012 | return cryptd_enqueue_request(queue, &req->base); |
| 1013 | } |
| 1014 | |
| 1015 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) |
| 1016 | { |
| 1017 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); |
| 1018 | } |
| 1019 | |
| 1020 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) |
| 1021 | { |
| 1022 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); |
| 1023 | } |
| 1024 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1025 | static int cryptd_aead_init_tfm(struct crypto_aead *tfm) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1026 | { |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1027 | struct aead_instance *inst = aead_alg_instance(tfm); |
| 1028 | struct aead_instance_ctx *ictx = aead_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1029 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1030 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1031 | struct crypto_aead *cipher; |
| 1032 | |
| 1033 | cipher = crypto_spawn_aead(spawn); |
| 1034 | if (IS_ERR(cipher)) |
| 1035 | return PTR_ERR(cipher); |
| 1036 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1037 | ctx->child = cipher; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 1038 | crypto_aead_set_reqsize( |
| 1039 | tfm, max((unsigned)sizeof(struct cryptd_aead_request_ctx), |
| 1040 | crypto_aead_reqsize(cipher))); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1041 | return 0; |
| 1042 | } |
| 1043 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1044 | static void cryptd_aead_exit_tfm(struct crypto_aead *tfm) |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1045 | { |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1046 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(tfm); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1047 | crypto_free_aead(ctx->child); |
| 1048 | } |
| 1049 | |
| 1050 | static int cryptd_create_aead(struct crypto_template *tmpl, |
| 1051 | struct rtattr **tb, |
| 1052 | struct cryptd_queue *queue) |
| 1053 | { |
| 1054 | struct aead_instance_ctx *ctx; |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1055 | struct aead_instance *inst; |
| 1056 | struct aead_alg *alg; |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1057 | const char *name; |
| 1058 | u32 type = 0; |
Herbert Xu | ec9f200 | 2015-07-06 19:11:03 +0800 | [diff] [blame] | 1059 | u32 mask = CRYPTO_ALG_ASYNC; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1060 | int err; |
| 1061 | |
Stephan Mueller | 466a7b9 | 2015-03-30 21:57:06 +0200 | [diff] [blame] | 1062 | cryptd_check_internal(tb, &type, &mask); |
| 1063 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1064 | name = crypto_attr_alg_name(tb[1]); |
| 1065 | if (IS_ERR(name)) |
| 1066 | return PTR_ERR(name); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1067 | |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1068 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
| 1069 | if (!inst) |
| 1070 | return -ENOMEM; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1071 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1072 | ctx = aead_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1073 | ctx->queue = queue; |
| 1074 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1075 | crypto_set_aead_spawn(&ctx->aead_spawn, aead_crypto_instance(inst)); |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1076 | err = crypto_grab_aead(&ctx->aead_spawn, name, type, mask); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1077 | if (err) |
| 1078 | goto out_free_inst; |
| 1079 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1080 | alg = crypto_spawn_aead_alg(&ctx->aead_spawn); |
| 1081 | err = cryptd_init_instance(aead_crypto_instance(inst), &alg->base); |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1082 | if (err) |
| 1083 | goto out_drop_aead; |
| 1084 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1085 | inst->alg.base.cra_flags = CRYPTO_ALG_ASYNC | |
Herbert Xu | 5e4b8c1 | 2015-08-13 17:29:06 +0800 | [diff] [blame] | 1086 | (alg->base.cra_flags & CRYPTO_ALG_INTERNAL); |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1087 | inst->alg.base.cra_ctxsize = sizeof(struct cryptd_aead_ctx); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1088 | |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1089 | inst->alg.ivsize = crypto_aead_alg_ivsize(alg); |
| 1090 | inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg); |
| 1091 | |
| 1092 | inst->alg.init = cryptd_aead_init_tfm; |
| 1093 | inst->alg.exit = cryptd_aead_exit_tfm; |
| 1094 | inst->alg.setkey = cryptd_aead_setkey; |
| 1095 | inst->alg.setauthsize = cryptd_aead_setauthsize; |
| 1096 | inst->alg.encrypt = cryptd_aead_encrypt_enqueue; |
| 1097 | inst->alg.decrypt = cryptd_aead_decrypt_enqueue; |
| 1098 | |
| 1099 | err = aead_register_instance(tmpl, inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1100 | if (err) { |
Herbert Xu | 9b8c456 | 2015-05-21 15:10:57 +0800 | [diff] [blame] | 1101 | out_drop_aead: |
| 1102 | crypto_drop_aead(&ctx->aead_spawn); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1103 | out_free_inst: |
| 1104 | kfree(inst); |
| 1105 | } |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1106 | return err; |
| 1107 | } |
| 1108 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 1109 | static struct cryptd_queue queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1110 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 1111 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1112 | { |
| 1113 | struct crypto_attr_type *algt; |
| 1114 | |
| 1115 | algt = crypto_get_attr_type(tb); |
| 1116 | if (IS_ERR(algt)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 1117 | return PTR_ERR(algt); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1118 | |
| 1119 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { |
| 1120 | case CRYPTO_ALG_TYPE_BLKCIPHER: |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 1121 | if ((algt->type & CRYPTO_ALG_TYPE_MASK) == |
| 1122 | CRYPTO_ALG_TYPE_BLKCIPHER) |
| 1123 | return cryptd_create_blkcipher(tmpl, tb, &queue); |
| 1124 | |
| 1125 | return cryptd_create_skcipher(tmpl, tb, &queue); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 1126 | case CRYPTO_ALG_TYPE_DIGEST: |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 1127 | return cryptd_create_hash(tmpl, tb, &queue); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1128 | case CRYPTO_ALG_TYPE_AEAD: |
| 1129 | return cryptd_create_aead(tmpl, tb, &queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1130 | } |
| 1131 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 1132 | return -EINVAL; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1133 | } |
| 1134 | |
| 1135 | static void cryptd_free(struct crypto_instance *inst) |
| 1136 | { |
| 1137 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 1138 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1139 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 1140 | |
| 1141 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { |
| 1142 | case CRYPTO_ALG_TYPE_AHASH: |
| 1143 | crypto_drop_shash(&hctx->spawn); |
| 1144 | kfree(ahash_instance(inst)); |
| 1145 | return; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1146 | case CRYPTO_ALG_TYPE_AEAD: |
Herbert Xu | f614e54 | 2015-05-28 22:08:04 +0800 | [diff] [blame] | 1147 | crypto_drop_aead(&aead_ctx->aead_spawn); |
| 1148 | kfree(aead_instance(inst)); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1149 | return; |
| 1150 | default: |
| 1151 | crypto_drop_spawn(&ctx->spawn); |
| 1152 | kfree(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 1153 | } |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1154 | } |
| 1155 | |
| 1156 | static struct crypto_template cryptd_tmpl = { |
| 1157 | .name = "cryptd", |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 1158 | .create = cryptd_create, |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1159 | .free = cryptd_free, |
| 1160 | .module = THIS_MODULE, |
| 1161 | }; |
| 1162 | |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1163 | struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, |
| 1164 | u32 type, u32 mask) |
| 1165 | { |
| 1166 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1167 | struct cryptd_blkcipher_ctx *ctx; |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 1168 | struct crypto_tfm *tfm; |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1169 | |
| 1170 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1171 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1172 | return ERR_PTR(-EINVAL); |
Alexander Kuleshov | c012a79 | 2015-11-25 23:48:28 +0600 | [diff] [blame] | 1173 | type = crypto_skcipher_type(type); |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 1174 | mask &= ~CRYPTO_ALG_TYPE_MASK; |
| 1175 | mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); |
| 1176 | tfm = crypto_alloc_base(cryptd_alg_name, type, mask); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1177 | if (IS_ERR(tfm)) |
| 1178 | return ERR_CAST(tfm); |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 1179 | if (tfm->__crt_alg->cra_module != THIS_MODULE) { |
| 1180 | crypto_free_tfm(tfm); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1181 | return ERR_PTR(-EINVAL); |
| 1182 | } |
| 1183 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1184 | ctx = crypto_tfm_ctx(tfm); |
| 1185 | atomic_set(&ctx->refcnt, 1); |
| 1186 | |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 1187 | return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1188 | } |
| 1189 | EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); |
| 1190 | |
| 1191 | struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) |
| 1192 | { |
| 1193 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); |
| 1194 | return ctx->child; |
| 1195 | } |
| 1196 | EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); |
| 1197 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1198 | bool cryptd_ablkcipher_queued(struct cryptd_ablkcipher *tfm) |
| 1199 | { |
| 1200 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); |
| 1201 | |
| 1202 | return atomic_read(&ctx->refcnt) - 1; |
| 1203 | } |
| 1204 | EXPORT_SYMBOL_GPL(cryptd_ablkcipher_queued); |
| 1205 | |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1206 | void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) |
| 1207 | { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1208 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); |
| 1209 | |
| 1210 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1211 | crypto_free_ablkcipher(&tfm->base); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 1212 | } |
| 1213 | EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); |
| 1214 | |
Herbert Xu | 4e0958d | 2016-11-22 20:08:23 +0800 | [diff] [blame] | 1215 | struct cryptd_skcipher *cryptd_alloc_skcipher(const char *alg_name, |
| 1216 | u32 type, u32 mask) |
| 1217 | { |
| 1218 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
| 1219 | struct cryptd_skcipher_ctx *ctx; |
| 1220 | struct crypto_skcipher *tfm; |
| 1221 | |
| 1222 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1223 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1224 | return ERR_PTR(-EINVAL); |
| 1225 | |
| 1226 | tfm = crypto_alloc_skcipher(cryptd_alg_name, type, mask); |
| 1227 | if (IS_ERR(tfm)) |
| 1228 | return ERR_CAST(tfm); |
| 1229 | |
| 1230 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 1231 | crypto_free_skcipher(tfm); |
| 1232 | return ERR_PTR(-EINVAL); |
| 1233 | } |
| 1234 | |
| 1235 | ctx = crypto_skcipher_ctx(tfm); |
| 1236 | atomic_set(&ctx->refcnt, 1); |
| 1237 | |
| 1238 | return container_of(tfm, struct cryptd_skcipher, base); |
| 1239 | } |
| 1240 | EXPORT_SYMBOL_GPL(cryptd_alloc_skcipher); |
| 1241 | |
| 1242 | struct crypto_skcipher *cryptd_skcipher_child(struct cryptd_skcipher *tfm) |
| 1243 | { |
| 1244 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 1245 | |
| 1246 | return ctx->child; |
| 1247 | } |
| 1248 | EXPORT_SYMBOL_GPL(cryptd_skcipher_child); |
| 1249 | |
| 1250 | bool cryptd_skcipher_queued(struct cryptd_skcipher *tfm) |
| 1251 | { |
| 1252 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 1253 | |
| 1254 | return atomic_read(&ctx->refcnt) - 1; |
| 1255 | } |
| 1256 | EXPORT_SYMBOL_GPL(cryptd_skcipher_queued); |
| 1257 | |
| 1258 | void cryptd_free_skcipher(struct cryptd_skcipher *tfm) |
| 1259 | { |
| 1260 | struct cryptd_skcipher_ctx *ctx = crypto_skcipher_ctx(&tfm->base); |
| 1261 | |
| 1262 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1263 | crypto_free_skcipher(&tfm->base); |
| 1264 | } |
| 1265 | EXPORT_SYMBOL_GPL(cryptd_free_skcipher); |
| 1266 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1267 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
| 1268 | u32 type, u32 mask) |
| 1269 | { |
| 1270 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1271 | struct cryptd_hash_ctx *ctx; |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1272 | struct crypto_ahash *tfm; |
| 1273 | |
| 1274 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1275 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1276 | return ERR_PTR(-EINVAL); |
| 1277 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); |
| 1278 | if (IS_ERR(tfm)) |
| 1279 | return ERR_CAST(tfm); |
| 1280 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 1281 | crypto_free_ahash(tfm); |
| 1282 | return ERR_PTR(-EINVAL); |
| 1283 | } |
| 1284 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1285 | ctx = crypto_ahash_ctx(tfm); |
| 1286 | atomic_set(&ctx->refcnt, 1); |
| 1287 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1288 | return __cryptd_ahash_cast(tfm); |
| 1289 | } |
| 1290 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); |
| 1291 | |
| 1292 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) |
| 1293 | { |
| 1294 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1295 | |
| 1296 | return ctx->child; |
| 1297 | } |
| 1298 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); |
| 1299 | |
Huang Ying | 0e1227d | 2009-10-19 11:53:06 +0900 | [diff] [blame] | 1300 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
| 1301 | { |
| 1302 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 1303 | return &rctx->desc; |
| 1304 | } |
| 1305 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); |
| 1306 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1307 | bool cryptd_ahash_queued(struct cryptd_ahash *tfm) |
| 1308 | { |
| 1309 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1310 | |
| 1311 | return atomic_read(&ctx->refcnt) - 1; |
| 1312 | } |
| 1313 | EXPORT_SYMBOL_GPL(cryptd_ahash_queued); |
| 1314 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1315 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
| 1316 | { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1317 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 1318 | |
| 1319 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1320 | crypto_free_ahash(&tfm->base); |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 1321 | } |
| 1322 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
| 1323 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1324 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
| 1325 | u32 type, u32 mask) |
| 1326 | { |
| 1327 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1328 | struct cryptd_aead_ctx *ctx; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1329 | struct crypto_aead *tfm; |
| 1330 | |
| 1331 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 1332 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 1333 | return ERR_PTR(-EINVAL); |
| 1334 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); |
| 1335 | if (IS_ERR(tfm)) |
| 1336 | return ERR_CAST(tfm); |
| 1337 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 1338 | crypto_free_aead(tfm); |
| 1339 | return ERR_PTR(-EINVAL); |
| 1340 | } |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1341 | |
| 1342 | ctx = crypto_aead_ctx(tfm); |
| 1343 | atomic_set(&ctx->refcnt, 1); |
| 1344 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1345 | return __cryptd_aead_cast(tfm); |
| 1346 | } |
| 1347 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); |
| 1348 | |
| 1349 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) |
| 1350 | { |
| 1351 | struct cryptd_aead_ctx *ctx; |
| 1352 | ctx = crypto_aead_ctx(&tfm->base); |
| 1353 | return ctx->child; |
| 1354 | } |
| 1355 | EXPORT_SYMBOL_GPL(cryptd_aead_child); |
| 1356 | |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1357 | bool cryptd_aead_queued(struct cryptd_aead *tfm) |
| 1358 | { |
| 1359 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); |
| 1360 | |
| 1361 | return atomic_read(&ctx->refcnt) - 1; |
| 1362 | } |
| 1363 | EXPORT_SYMBOL_GPL(cryptd_aead_queued); |
| 1364 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1365 | void cryptd_free_aead(struct cryptd_aead *tfm) |
| 1366 | { |
Herbert Xu | 81760ea | 2016-06-21 16:55:13 +0800 | [diff] [blame] | 1367 | struct cryptd_aead_ctx *ctx = crypto_aead_ctx(&tfm->base); |
| 1368 | |
| 1369 | if (atomic_dec_and_test(&ctx->refcnt)) |
| 1370 | crypto_free_aead(&tfm->base); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 1371 | } |
| 1372 | EXPORT_SYMBOL_GPL(cryptd_free_aead); |
| 1373 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1374 | static int __init cryptd_init(void) |
| 1375 | { |
| 1376 | int err; |
| 1377 | |
Jon Maxwell | c3a5360 | 2017-11-22 16:08:17 +1100 | [diff] [blame] | 1378 | err = cryptd_init_queue(&queue, cryptd_max_cpu_qlen); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1379 | if (err) |
| 1380 | return err; |
| 1381 | |
| 1382 | err = crypto_register_template(&cryptd_tmpl); |
| 1383 | if (err) |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 1384 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1385 | |
| 1386 | return err; |
| 1387 | } |
| 1388 | |
| 1389 | static void __exit cryptd_exit(void) |
| 1390 | { |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 1391 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1392 | crypto_unregister_template(&cryptd_tmpl); |
| 1393 | } |
| 1394 | |
Herbert Xu | b2bac6ac | 2011-08-19 16:11:23 +0800 | [diff] [blame] | 1395 | subsys_initcall(cryptd_init); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 1396 | module_exit(cryptd_exit); |
| 1397 | |
| 1398 | MODULE_LICENSE("GPL"); |
| 1399 | MODULE_DESCRIPTION("Software async crypto daemon"); |
Kees Cook | 4943ba1 | 2014-11-24 16:32:38 -0800 | [diff] [blame] | 1400 | MODULE_ALIAS_CRYPTO("cryptd"); |