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 | |
| 20 | #include <crypto/algapi.h> |
Herbert Xu | 18e33e6 | 2008-07-10 16:01:22 +0800 | [diff] [blame] | 21 | #include <crypto/internal/hash.h> |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 22 | #include <crypto/internal/aead.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 | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 25 | #include <linux/err.h> |
| 26 | #include <linux/init.h> |
| 27 | #include <linux/kernel.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 28 | #include <linux/list.h> |
| 29 | #include <linux/module.h> |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 30 | #include <linux/scatterlist.h> |
| 31 | #include <linux/sched.h> |
| 32 | #include <linux/slab.h> |
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 | #define CRYPTD_MAX_CPU_QLEN 100 |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 35 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 36 | struct cryptd_cpu_queue { |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 37 | struct crypto_queue queue; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 38 | struct work_struct work; |
| 39 | }; |
| 40 | |
| 41 | struct cryptd_queue { |
Tejun Heo | a29d8b8 | 2010-02-02 14:39:15 +0900 | [diff] [blame] | 42 | struct cryptd_cpu_queue __percpu *cpu_queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 43 | }; |
| 44 | |
| 45 | struct cryptd_instance_ctx { |
| 46 | struct crypto_spawn spawn; |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 47 | struct cryptd_queue *queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 48 | }; |
| 49 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 50 | struct hashd_instance_ctx { |
| 51 | struct crypto_shash_spawn spawn; |
| 52 | struct cryptd_queue *queue; |
| 53 | }; |
| 54 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 55 | struct aead_instance_ctx { |
| 56 | struct crypto_aead_spawn aead_spawn; |
| 57 | struct cryptd_queue *queue; |
| 58 | }; |
| 59 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 60 | struct cryptd_blkcipher_ctx { |
| 61 | struct crypto_blkcipher *child; |
| 62 | }; |
| 63 | |
| 64 | struct cryptd_blkcipher_request_ctx { |
| 65 | crypto_completion_t complete; |
| 66 | }; |
| 67 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 68 | struct cryptd_hash_ctx { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 69 | struct crypto_shash *child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 70 | }; |
| 71 | |
| 72 | struct cryptd_hash_request_ctx { |
| 73 | crypto_completion_t complete; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 74 | struct shash_desc desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 75 | }; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 76 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 77 | struct cryptd_aead_ctx { |
| 78 | struct crypto_aead *child; |
| 79 | }; |
| 80 | |
| 81 | struct cryptd_aead_request_ctx { |
| 82 | crypto_completion_t complete; |
| 83 | }; |
| 84 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 85 | static void cryptd_queue_worker(struct work_struct *work); |
| 86 | |
| 87 | static int cryptd_init_queue(struct cryptd_queue *queue, |
| 88 | unsigned int max_cpu_qlen) |
| 89 | { |
| 90 | int cpu; |
| 91 | struct cryptd_cpu_queue *cpu_queue; |
| 92 | |
| 93 | queue->cpu_queue = alloc_percpu(struct cryptd_cpu_queue); |
| 94 | if (!queue->cpu_queue) |
| 95 | return -ENOMEM; |
| 96 | for_each_possible_cpu(cpu) { |
| 97 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 98 | crypto_init_queue(&cpu_queue->queue, max_cpu_qlen); |
| 99 | INIT_WORK(&cpu_queue->work, cryptd_queue_worker); |
| 100 | } |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | static void cryptd_fini_queue(struct cryptd_queue *queue) |
| 105 | { |
| 106 | int cpu; |
| 107 | struct cryptd_cpu_queue *cpu_queue; |
| 108 | |
| 109 | for_each_possible_cpu(cpu) { |
| 110 | cpu_queue = per_cpu_ptr(queue->cpu_queue, cpu); |
| 111 | BUG_ON(cpu_queue->queue.qlen); |
| 112 | } |
| 113 | free_percpu(queue->cpu_queue); |
| 114 | } |
| 115 | |
| 116 | static int cryptd_enqueue_request(struct cryptd_queue *queue, |
| 117 | struct crypto_async_request *request) |
| 118 | { |
| 119 | int cpu, err; |
| 120 | struct cryptd_cpu_queue *cpu_queue; |
| 121 | |
| 122 | cpu = get_cpu(); |
Christoph Lameter | 0b44f48 | 2009-10-03 19:48:23 +0900 | [diff] [blame] | 123 | cpu_queue = this_cpu_ptr(queue->cpu_queue); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 124 | err = crypto_enqueue_request(&cpu_queue->queue, request); |
| 125 | queue_work_on(cpu, kcrypto_wq, &cpu_queue->work); |
| 126 | put_cpu(); |
| 127 | |
| 128 | return err; |
| 129 | } |
| 130 | |
| 131 | /* Called in workqueue context, do one real cryption work (via |
| 132 | * req->complete) and reschedule itself if there are more work to |
| 133 | * do. */ |
| 134 | static void cryptd_queue_worker(struct work_struct *work) |
| 135 | { |
| 136 | struct cryptd_cpu_queue *cpu_queue; |
| 137 | struct crypto_async_request *req, *backlog; |
| 138 | |
| 139 | cpu_queue = container_of(work, struct cryptd_cpu_queue, work); |
| 140 | /* Only handle one request at a time to avoid hogging crypto |
| 141 | * workqueue. preempt_disable/enable is used to prevent |
| 142 | * being preempted by cryptd_enqueue_request() */ |
| 143 | preempt_disable(); |
| 144 | backlog = crypto_get_backlog(&cpu_queue->queue); |
| 145 | req = crypto_dequeue_request(&cpu_queue->queue); |
| 146 | preempt_enable(); |
| 147 | |
| 148 | if (!req) |
| 149 | return; |
| 150 | |
| 151 | if (backlog) |
| 152 | backlog->complete(backlog, -EINPROGRESS); |
| 153 | req->complete(req, 0); |
| 154 | |
| 155 | if (cpu_queue->queue.qlen) |
| 156 | queue_work(kcrypto_wq, &cpu_queue->work); |
| 157 | } |
| 158 | |
| 159 | static inline struct cryptd_queue *cryptd_get_queue(struct crypto_tfm *tfm) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 160 | { |
| 161 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 162 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 163 | return ictx->queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 164 | } |
| 165 | |
| 166 | static int cryptd_blkcipher_setkey(struct crypto_ablkcipher *parent, |
| 167 | const u8 *key, unsigned int keylen) |
| 168 | { |
| 169 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(parent); |
| 170 | struct crypto_blkcipher *child = ctx->child; |
| 171 | int err; |
| 172 | |
| 173 | crypto_blkcipher_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 174 | crypto_blkcipher_set_flags(child, crypto_ablkcipher_get_flags(parent) & |
| 175 | CRYPTO_TFM_REQ_MASK); |
| 176 | err = crypto_blkcipher_setkey(child, key, keylen); |
| 177 | crypto_ablkcipher_set_flags(parent, crypto_blkcipher_get_flags(child) & |
| 178 | CRYPTO_TFM_RES_MASK); |
| 179 | return err; |
| 180 | } |
| 181 | |
| 182 | static void cryptd_blkcipher_crypt(struct ablkcipher_request *req, |
| 183 | struct crypto_blkcipher *child, |
| 184 | int err, |
| 185 | int (*crypt)(struct blkcipher_desc *desc, |
| 186 | struct scatterlist *dst, |
| 187 | struct scatterlist *src, |
| 188 | unsigned int len)) |
| 189 | { |
| 190 | struct cryptd_blkcipher_request_ctx *rctx; |
| 191 | struct blkcipher_desc desc; |
| 192 | |
| 193 | rctx = ablkcipher_request_ctx(req); |
| 194 | |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 195 | if (unlikely(err == -EINPROGRESS)) |
| 196 | goto out; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 197 | |
| 198 | desc.tfm = child; |
| 199 | desc.info = req->info; |
| 200 | desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
| 201 | |
| 202 | err = crypt(&desc, req->dst, req->src, req->nbytes); |
| 203 | |
| 204 | req->base.complete = rctx->complete; |
| 205 | |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 206 | out: |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 207 | local_bh_disable(); |
Herbert Xu | 93aa7f8 | 2008-05-07 21:10:13 +0800 | [diff] [blame] | 208 | rctx->complete(&req->base, err); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 209 | local_bh_enable(); |
| 210 | } |
| 211 | |
| 212 | static void cryptd_blkcipher_encrypt(struct crypto_async_request *req, int err) |
| 213 | { |
| 214 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); |
| 215 | struct crypto_blkcipher *child = ctx->child; |
| 216 | |
| 217 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, |
| 218 | crypto_blkcipher_crt(child)->encrypt); |
| 219 | } |
| 220 | |
| 221 | static void cryptd_blkcipher_decrypt(struct crypto_async_request *req, int err) |
| 222 | { |
| 223 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(req->tfm); |
| 224 | struct crypto_blkcipher *child = ctx->child; |
| 225 | |
| 226 | cryptd_blkcipher_crypt(ablkcipher_request_cast(req), child, err, |
| 227 | crypto_blkcipher_crt(child)->decrypt); |
| 228 | } |
| 229 | |
| 230 | static int cryptd_blkcipher_enqueue(struct ablkcipher_request *req, |
| 231 | crypto_completion_t complete) |
| 232 | { |
| 233 | struct cryptd_blkcipher_request_ctx *rctx = ablkcipher_request_ctx(req); |
| 234 | struct crypto_ablkcipher *tfm = crypto_ablkcipher_reqtfm(req); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 235 | struct cryptd_queue *queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 236 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 237 | queue = cryptd_get_queue(crypto_ablkcipher_tfm(tfm)); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 238 | rctx->complete = req->base.complete; |
| 239 | req->base.complete = complete; |
| 240 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 241 | return cryptd_enqueue_request(queue, &req->base); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 242 | } |
| 243 | |
| 244 | static int cryptd_blkcipher_encrypt_enqueue(struct ablkcipher_request *req) |
| 245 | { |
| 246 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_encrypt); |
| 247 | } |
| 248 | |
| 249 | static int cryptd_blkcipher_decrypt_enqueue(struct ablkcipher_request *req) |
| 250 | { |
| 251 | return cryptd_blkcipher_enqueue(req, cryptd_blkcipher_decrypt); |
| 252 | } |
| 253 | |
| 254 | static int cryptd_blkcipher_init_tfm(struct crypto_tfm *tfm) |
| 255 | { |
| 256 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 257 | struct cryptd_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 258 | struct crypto_spawn *spawn = &ictx->spawn; |
| 259 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
| 260 | struct crypto_blkcipher *cipher; |
| 261 | |
| 262 | cipher = crypto_spawn_blkcipher(spawn); |
| 263 | if (IS_ERR(cipher)) |
| 264 | return PTR_ERR(cipher); |
| 265 | |
| 266 | ctx->child = cipher; |
| 267 | tfm->crt_ablkcipher.reqsize = |
| 268 | sizeof(struct cryptd_blkcipher_request_ctx); |
| 269 | return 0; |
| 270 | } |
| 271 | |
| 272 | static void cryptd_blkcipher_exit_tfm(struct crypto_tfm *tfm) |
| 273 | { |
| 274 | struct cryptd_blkcipher_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 275 | |
| 276 | crypto_free_blkcipher(ctx->child); |
| 277 | } |
| 278 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 279 | static void *cryptd_alloc_instance(struct crypto_alg *alg, unsigned int head, |
| 280 | unsigned int tail) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 281 | { |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 282 | char *p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 283 | struct crypto_instance *inst; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 284 | int err; |
| 285 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 286 | p = kzalloc(head + sizeof(*inst) + tail, GFP_KERNEL); |
| 287 | if (!p) |
| 288 | return ERR_PTR(-ENOMEM); |
| 289 | |
| 290 | inst = (void *)(p + head); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 291 | |
| 292 | err = -ENAMETOOLONG; |
| 293 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, |
| 294 | "cryptd(%s)", alg->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) |
| 295 | goto out_free_inst; |
| 296 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 297 | memcpy(inst->alg.cra_name, alg->cra_name, CRYPTO_MAX_ALG_NAME); |
| 298 | |
| 299 | inst->alg.cra_priority = alg->cra_priority + 50; |
| 300 | inst->alg.cra_blocksize = alg->cra_blocksize; |
| 301 | inst->alg.cra_alignmask = alg->cra_alignmask; |
| 302 | |
| 303 | out: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 304 | return p; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 305 | |
| 306 | out_free_inst: |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 307 | kfree(p); |
| 308 | p = ERR_PTR(err); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 309 | goto out; |
| 310 | } |
| 311 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 312 | static int cryptd_create_blkcipher(struct crypto_template *tmpl, |
| 313 | struct rtattr **tb, |
| 314 | struct cryptd_queue *queue) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 315 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 316 | struct cryptd_instance_ctx *ctx; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 317 | struct crypto_instance *inst; |
| 318 | struct crypto_alg *alg; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 319 | int err; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 320 | |
| 321 | alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_BLKCIPHER, |
Herbert Xu | 332f884 | 2007-11-15 22:36:07 +0800 | [diff] [blame] | 322 | CRYPTO_ALG_TYPE_MASK); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 323 | if (IS_ERR(alg)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 324 | return PTR_ERR(alg); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 325 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 326 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
Steffen Klassert | 05ed875 | 2009-07-15 16:51:04 +0800 | [diff] [blame] | 327 | err = PTR_ERR(inst); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 328 | if (IS_ERR(inst)) |
| 329 | goto out_put_alg; |
| 330 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 331 | ctx = crypto_instance_ctx(inst); |
| 332 | ctx->queue = queue; |
| 333 | |
| 334 | err = crypto_init_spawn(&ctx->spawn, alg, inst, |
| 335 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); |
| 336 | if (err) |
| 337 | goto out_free_inst; |
| 338 | |
Herbert Xu | 332f884 | 2007-11-15 22:36:07 +0800 | [diff] [blame] | 339 | inst->alg.cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | CRYPTO_ALG_ASYNC; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 340 | inst->alg.cra_type = &crypto_ablkcipher_type; |
| 341 | |
| 342 | inst->alg.cra_ablkcipher.ivsize = alg->cra_blkcipher.ivsize; |
| 343 | inst->alg.cra_ablkcipher.min_keysize = alg->cra_blkcipher.min_keysize; |
| 344 | inst->alg.cra_ablkcipher.max_keysize = alg->cra_blkcipher.max_keysize; |
| 345 | |
Herbert Xu | 927eead | 2007-11-27 21:15:31 +0800 | [diff] [blame] | 346 | inst->alg.cra_ablkcipher.geniv = alg->cra_blkcipher.geniv; |
| 347 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 348 | inst->alg.cra_ctxsize = sizeof(struct cryptd_blkcipher_ctx); |
| 349 | |
| 350 | inst->alg.cra_init = cryptd_blkcipher_init_tfm; |
| 351 | inst->alg.cra_exit = cryptd_blkcipher_exit_tfm; |
| 352 | |
| 353 | inst->alg.cra_ablkcipher.setkey = cryptd_blkcipher_setkey; |
| 354 | inst->alg.cra_ablkcipher.encrypt = cryptd_blkcipher_encrypt_enqueue; |
| 355 | inst->alg.cra_ablkcipher.decrypt = cryptd_blkcipher_decrypt_enqueue; |
| 356 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 357 | err = crypto_register_instance(tmpl, inst); |
| 358 | if (err) { |
| 359 | crypto_drop_spawn(&ctx->spawn); |
| 360 | out_free_inst: |
| 361 | kfree(inst); |
| 362 | } |
| 363 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 364 | out_put_alg: |
| 365 | crypto_mod_put(alg); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 366 | return err; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 367 | } |
| 368 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 369 | static int cryptd_hash_init_tfm(struct crypto_tfm *tfm) |
| 370 | { |
| 371 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 372 | struct hashd_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 373 | struct crypto_shash_spawn *spawn = &ictx->spawn; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 374 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 375 | struct crypto_shash *hash; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 376 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 377 | hash = crypto_spawn_shash(spawn); |
| 378 | if (IS_ERR(hash)) |
| 379 | return PTR_ERR(hash); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 380 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 381 | ctx->child = hash; |
Herbert Xu | 0d6669e | 2009-07-12 23:06:33 +0800 | [diff] [blame] | 382 | crypto_ahash_set_reqsize(__crypto_ahash_cast(tfm), |
| 383 | sizeof(struct cryptd_hash_request_ctx) + |
| 384 | crypto_shash_descsize(hash)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 385 | return 0; |
| 386 | } |
| 387 | |
| 388 | static void cryptd_hash_exit_tfm(struct crypto_tfm *tfm) |
| 389 | { |
| 390 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(tfm); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 391 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 392 | crypto_free_shash(ctx->child); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 393 | } |
| 394 | |
| 395 | static int cryptd_hash_setkey(struct crypto_ahash *parent, |
| 396 | const u8 *key, unsigned int keylen) |
| 397 | { |
| 398 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(parent); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 399 | struct crypto_shash *child = ctx->child; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 400 | int err; |
| 401 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 402 | crypto_shash_clear_flags(child, CRYPTO_TFM_REQ_MASK); |
| 403 | crypto_shash_set_flags(child, crypto_ahash_get_flags(parent) & |
| 404 | CRYPTO_TFM_REQ_MASK); |
| 405 | err = crypto_shash_setkey(child, key, keylen); |
| 406 | crypto_ahash_set_flags(parent, crypto_shash_get_flags(child) & |
| 407 | CRYPTO_TFM_RES_MASK); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 408 | return err; |
| 409 | } |
| 410 | |
| 411 | static int cryptd_hash_enqueue(struct ahash_request *req, |
| 412 | crypto_completion_t complete) |
| 413 | { |
| 414 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 415 | struct crypto_ahash *tfm = crypto_ahash_reqtfm(req); |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 416 | struct cryptd_queue *queue = |
| 417 | cryptd_get_queue(crypto_ahash_tfm(tfm)); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 418 | |
| 419 | rctx->complete = req->base.complete; |
| 420 | req->base.complete = complete; |
| 421 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 422 | return cryptd_enqueue_request(queue, &req->base); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 423 | } |
| 424 | |
| 425 | static void cryptd_hash_init(struct crypto_async_request *req_async, int err) |
| 426 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 427 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 428 | struct crypto_shash *child = ctx->child; |
| 429 | struct ahash_request *req = ahash_request_cast(req_async); |
| 430 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 431 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 432 | |
| 433 | if (unlikely(err == -EINPROGRESS)) |
| 434 | goto out; |
| 435 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 436 | desc->tfm = child; |
| 437 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 438 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 439 | err = crypto_shash_init(desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 440 | |
| 441 | req->base.complete = rctx->complete; |
| 442 | |
| 443 | out: |
| 444 | local_bh_disable(); |
| 445 | rctx->complete(&req->base, err); |
| 446 | local_bh_enable(); |
| 447 | } |
| 448 | |
| 449 | static int cryptd_hash_init_enqueue(struct ahash_request *req) |
| 450 | { |
| 451 | return cryptd_hash_enqueue(req, cryptd_hash_init); |
| 452 | } |
| 453 | |
| 454 | static void cryptd_hash_update(struct crypto_async_request *req_async, int err) |
| 455 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 456 | struct ahash_request *req = ahash_request_cast(req_async); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 457 | struct cryptd_hash_request_ctx *rctx; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 458 | |
| 459 | rctx = ahash_request_ctx(req); |
| 460 | |
| 461 | if (unlikely(err == -EINPROGRESS)) |
| 462 | goto out; |
| 463 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 464 | err = shash_ahash_update(req, &rctx->desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 465 | |
| 466 | req->base.complete = rctx->complete; |
| 467 | |
| 468 | out: |
| 469 | local_bh_disable(); |
| 470 | rctx->complete(&req->base, err); |
| 471 | local_bh_enable(); |
| 472 | } |
| 473 | |
| 474 | static int cryptd_hash_update_enqueue(struct ahash_request *req) |
| 475 | { |
| 476 | return cryptd_hash_enqueue(req, cryptd_hash_update); |
| 477 | } |
| 478 | |
| 479 | static void cryptd_hash_final(struct crypto_async_request *req_async, int err) |
| 480 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 481 | struct ahash_request *req = ahash_request_cast(req_async); |
| 482 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 483 | |
| 484 | if (unlikely(err == -EINPROGRESS)) |
| 485 | goto out; |
| 486 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 487 | err = crypto_shash_final(&rctx->desc, req->result); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 488 | |
| 489 | req->base.complete = rctx->complete; |
| 490 | |
| 491 | out: |
| 492 | local_bh_disable(); |
| 493 | rctx->complete(&req->base, err); |
| 494 | local_bh_enable(); |
| 495 | } |
| 496 | |
| 497 | static int cryptd_hash_final_enqueue(struct ahash_request *req) |
| 498 | { |
| 499 | return cryptd_hash_enqueue(req, cryptd_hash_final); |
| 500 | } |
| 501 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 502 | static void cryptd_hash_finup(struct crypto_async_request *req_async, int err) |
| 503 | { |
| 504 | struct ahash_request *req = ahash_request_cast(req_async); |
| 505 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 506 | |
| 507 | if (unlikely(err == -EINPROGRESS)) |
| 508 | goto out; |
| 509 | |
| 510 | err = shash_ahash_finup(req, &rctx->desc); |
| 511 | |
| 512 | req->base.complete = rctx->complete; |
| 513 | |
| 514 | out: |
| 515 | local_bh_disable(); |
| 516 | rctx->complete(&req->base, err); |
| 517 | local_bh_enable(); |
| 518 | } |
| 519 | |
| 520 | static int cryptd_hash_finup_enqueue(struct ahash_request *req) |
| 521 | { |
| 522 | return cryptd_hash_enqueue(req, cryptd_hash_finup); |
| 523 | } |
| 524 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 525 | static void cryptd_hash_digest(struct crypto_async_request *req_async, int err) |
| 526 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 527 | struct cryptd_hash_ctx *ctx = crypto_tfm_ctx(req_async->tfm); |
| 528 | struct crypto_shash *child = ctx->child; |
| 529 | struct ahash_request *req = ahash_request_cast(req_async); |
| 530 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 531 | struct shash_desc *desc = &rctx->desc; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 532 | |
| 533 | if (unlikely(err == -EINPROGRESS)) |
| 534 | goto out; |
| 535 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 536 | desc->tfm = child; |
| 537 | desc->flags = CRYPTO_TFM_REQ_MAY_SLEEP; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 538 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 539 | err = shash_ahash_digest(req, desc); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 540 | |
| 541 | req->base.complete = rctx->complete; |
| 542 | |
| 543 | out: |
| 544 | local_bh_disable(); |
| 545 | rctx->complete(&req->base, err); |
| 546 | local_bh_enable(); |
| 547 | } |
| 548 | |
| 549 | static int cryptd_hash_digest_enqueue(struct ahash_request *req) |
| 550 | { |
| 551 | return cryptd_hash_enqueue(req, cryptd_hash_digest); |
| 552 | } |
| 553 | |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 554 | static int cryptd_hash_export(struct ahash_request *req, void *out) |
| 555 | { |
| 556 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 557 | |
| 558 | return crypto_shash_export(&rctx->desc, out); |
| 559 | } |
| 560 | |
| 561 | static int cryptd_hash_import(struct ahash_request *req, const void *in) |
| 562 | { |
| 563 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 564 | |
| 565 | return crypto_shash_import(&rctx->desc, in); |
| 566 | } |
| 567 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 568 | static int cryptd_create_hash(struct crypto_template *tmpl, struct rtattr **tb, |
| 569 | struct cryptd_queue *queue) |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 570 | { |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 571 | struct hashd_instance_ctx *ctx; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 572 | struct ahash_instance *inst; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 573 | struct shash_alg *salg; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 574 | struct crypto_alg *alg; |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 575 | int err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 576 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 577 | salg = shash_attr_alg(tb[1], 0, 0); |
| 578 | if (IS_ERR(salg)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 579 | return PTR_ERR(salg); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 580 | |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 581 | alg = &salg->base; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 582 | inst = cryptd_alloc_instance(alg, ahash_instance_headroom(), |
| 583 | sizeof(*ctx)); |
Steffen Klassert | 05ed875 | 2009-07-15 16:51:04 +0800 | [diff] [blame] | 584 | err = PTR_ERR(inst); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 585 | if (IS_ERR(inst)) |
| 586 | goto out_put_alg; |
| 587 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 588 | ctx = ahash_instance_ctx(inst); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 589 | ctx->queue = queue; |
| 590 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 591 | err = crypto_init_shash_spawn(&ctx->spawn, salg, |
| 592 | ahash_crypto_instance(inst)); |
Herbert Xu | 46309d8 | 2009-07-12 21:38:59 +0800 | [diff] [blame] | 593 | if (err) |
| 594 | goto out_free_inst; |
| 595 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 596 | inst->alg.halg.base.cra_flags = CRYPTO_ALG_ASYNC; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 597 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 598 | inst->alg.halg.digestsize = salg->digestsize; |
| 599 | inst->alg.halg.base.cra_ctxsize = sizeof(struct cryptd_hash_ctx); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 600 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 601 | inst->alg.halg.base.cra_init = cryptd_hash_init_tfm; |
| 602 | inst->alg.halg.base.cra_exit = cryptd_hash_exit_tfm; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 603 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 604 | inst->alg.init = cryptd_hash_init_enqueue; |
| 605 | inst->alg.update = cryptd_hash_update_enqueue; |
| 606 | inst->alg.final = cryptd_hash_final_enqueue; |
Herbert Xu | 6fba00d | 2009-07-22 11:10:22 +0800 | [diff] [blame] | 607 | inst->alg.finup = cryptd_hash_finup_enqueue; |
| 608 | inst->alg.export = cryptd_hash_export; |
| 609 | inst->alg.import = cryptd_hash_import; |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 610 | inst->alg.setkey = cryptd_hash_setkey; |
| 611 | inst->alg.digest = cryptd_hash_digest_enqueue; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 612 | |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 613 | err = ahash_register_instance(tmpl, inst); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 614 | if (err) { |
| 615 | crypto_drop_shash(&ctx->spawn); |
| 616 | out_free_inst: |
| 617 | kfree(inst); |
| 618 | } |
| 619 | |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 620 | out_put_alg: |
| 621 | crypto_mod_put(alg); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 622 | return err; |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 623 | } |
| 624 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 625 | static void cryptd_aead_crypt(struct aead_request *req, |
| 626 | struct crypto_aead *child, |
| 627 | int err, |
| 628 | int (*crypt)(struct aead_request *req)) |
| 629 | { |
| 630 | struct cryptd_aead_request_ctx *rctx; |
| 631 | rctx = aead_request_ctx(req); |
| 632 | |
| 633 | if (unlikely(err == -EINPROGRESS)) |
| 634 | goto out; |
| 635 | aead_request_set_tfm(req, child); |
| 636 | err = crypt( req ); |
| 637 | req->base.complete = rctx->complete; |
| 638 | out: |
| 639 | local_bh_disable(); |
| 640 | rctx->complete(&req->base, err); |
| 641 | local_bh_enable(); |
| 642 | } |
| 643 | |
| 644 | static void cryptd_aead_encrypt(struct crypto_async_request *areq, int err) |
| 645 | { |
| 646 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 647 | struct crypto_aead *child = ctx->child; |
| 648 | struct aead_request *req; |
| 649 | |
| 650 | req = container_of(areq, struct aead_request, base); |
| 651 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->encrypt); |
| 652 | } |
| 653 | |
| 654 | static void cryptd_aead_decrypt(struct crypto_async_request *areq, int err) |
| 655 | { |
| 656 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(areq->tfm); |
| 657 | struct crypto_aead *child = ctx->child; |
| 658 | struct aead_request *req; |
| 659 | |
| 660 | req = container_of(areq, struct aead_request, base); |
| 661 | cryptd_aead_crypt(req, child, err, crypto_aead_crt(child)->decrypt); |
| 662 | } |
| 663 | |
| 664 | static int cryptd_aead_enqueue(struct aead_request *req, |
| 665 | crypto_completion_t complete) |
| 666 | { |
| 667 | struct cryptd_aead_request_ctx *rctx = aead_request_ctx(req); |
| 668 | struct crypto_aead *tfm = crypto_aead_reqtfm(req); |
| 669 | struct cryptd_queue *queue = cryptd_get_queue(crypto_aead_tfm(tfm)); |
| 670 | |
| 671 | rctx->complete = req->base.complete; |
| 672 | req->base.complete = complete; |
| 673 | return cryptd_enqueue_request(queue, &req->base); |
| 674 | } |
| 675 | |
| 676 | static int cryptd_aead_encrypt_enqueue(struct aead_request *req) |
| 677 | { |
| 678 | return cryptd_aead_enqueue(req, cryptd_aead_encrypt ); |
| 679 | } |
| 680 | |
| 681 | static int cryptd_aead_decrypt_enqueue(struct aead_request *req) |
| 682 | { |
| 683 | return cryptd_aead_enqueue(req, cryptd_aead_decrypt ); |
| 684 | } |
| 685 | |
| 686 | static int cryptd_aead_init_tfm(struct crypto_tfm *tfm) |
| 687 | { |
| 688 | struct crypto_instance *inst = crypto_tfm_alg_instance(tfm); |
| 689 | struct aead_instance_ctx *ictx = crypto_instance_ctx(inst); |
| 690 | struct crypto_aead_spawn *spawn = &ictx->aead_spawn; |
| 691 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); |
| 692 | struct crypto_aead *cipher; |
| 693 | |
| 694 | cipher = crypto_spawn_aead(spawn); |
| 695 | if (IS_ERR(cipher)) |
| 696 | return PTR_ERR(cipher); |
| 697 | |
| 698 | crypto_aead_set_flags(cipher, CRYPTO_TFM_REQ_MAY_SLEEP); |
| 699 | ctx->child = cipher; |
| 700 | tfm->crt_aead.reqsize = sizeof(struct cryptd_aead_request_ctx); |
| 701 | return 0; |
| 702 | } |
| 703 | |
| 704 | static void cryptd_aead_exit_tfm(struct crypto_tfm *tfm) |
| 705 | { |
| 706 | struct cryptd_aead_ctx *ctx = crypto_tfm_ctx(tfm); |
| 707 | crypto_free_aead(ctx->child); |
| 708 | } |
| 709 | |
| 710 | static int cryptd_create_aead(struct crypto_template *tmpl, |
| 711 | struct rtattr **tb, |
| 712 | struct cryptd_queue *queue) |
| 713 | { |
| 714 | struct aead_instance_ctx *ctx; |
| 715 | struct crypto_instance *inst; |
| 716 | struct crypto_alg *alg; |
| 717 | int err; |
| 718 | |
| 719 | alg = crypto_get_attr_alg(tb, CRYPTO_ALG_TYPE_AEAD, |
| 720 | CRYPTO_ALG_TYPE_MASK); |
| 721 | if (IS_ERR(alg)) |
| 722 | return PTR_ERR(alg); |
| 723 | |
| 724 | inst = cryptd_alloc_instance(alg, 0, sizeof(*ctx)); |
| 725 | err = PTR_ERR(inst); |
| 726 | if (IS_ERR(inst)) |
| 727 | goto out_put_alg; |
| 728 | |
| 729 | ctx = crypto_instance_ctx(inst); |
| 730 | ctx->queue = queue; |
| 731 | |
| 732 | err = crypto_init_spawn(&ctx->aead_spawn.base, alg, inst, |
| 733 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_ASYNC); |
| 734 | if (err) |
| 735 | goto out_free_inst; |
| 736 | |
| 737 | inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC; |
| 738 | inst->alg.cra_type = alg->cra_type; |
| 739 | inst->alg.cra_ctxsize = sizeof(struct cryptd_aead_ctx); |
| 740 | inst->alg.cra_init = cryptd_aead_init_tfm; |
| 741 | inst->alg.cra_exit = cryptd_aead_exit_tfm; |
| 742 | inst->alg.cra_aead.setkey = alg->cra_aead.setkey; |
| 743 | inst->alg.cra_aead.setauthsize = alg->cra_aead.setauthsize; |
| 744 | inst->alg.cra_aead.geniv = alg->cra_aead.geniv; |
| 745 | inst->alg.cra_aead.ivsize = alg->cra_aead.ivsize; |
| 746 | inst->alg.cra_aead.maxauthsize = alg->cra_aead.maxauthsize; |
| 747 | inst->alg.cra_aead.encrypt = cryptd_aead_encrypt_enqueue; |
| 748 | inst->alg.cra_aead.decrypt = cryptd_aead_decrypt_enqueue; |
| 749 | inst->alg.cra_aead.givencrypt = alg->cra_aead.givencrypt; |
| 750 | inst->alg.cra_aead.givdecrypt = alg->cra_aead.givdecrypt; |
| 751 | |
| 752 | err = crypto_register_instance(tmpl, inst); |
| 753 | if (err) { |
| 754 | crypto_drop_spawn(&ctx->aead_spawn.base); |
| 755 | out_free_inst: |
| 756 | kfree(inst); |
| 757 | } |
| 758 | out_put_alg: |
| 759 | crypto_mod_put(alg); |
| 760 | return err; |
| 761 | } |
| 762 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 763 | static struct cryptd_queue queue; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 764 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 765 | static int cryptd_create(struct crypto_template *tmpl, struct rtattr **tb) |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 766 | { |
| 767 | struct crypto_attr_type *algt; |
| 768 | |
| 769 | algt = crypto_get_attr_type(tb); |
| 770 | if (IS_ERR(algt)) |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 771 | return PTR_ERR(algt); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 772 | |
| 773 | switch (algt->type & algt->mask & CRYPTO_ALG_TYPE_MASK) { |
| 774 | case CRYPTO_ALG_TYPE_BLKCIPHER: |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 775 | return cryptd_create_blkcipher(tmpl, tb, &queue); |
Loc Ho | b8a2825 | 2008-05-14 21:23:00 +0800 | [diff] [blame] | 776 | case CRYPTO_ALG_TYPE_DIGEST: |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 777 | return cryptd_create_hash(tmpl, tb, &queue); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 778 | case CRYPTO_ALG_TYPE_AEAD: |
| 779 | return cryptd_create_aead(tmpl, tb, &queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 780 | } |
| 781 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 782 | return -EINVAL; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | static void cryptd_free(struct crypto_instance *inst) |
| 786 | { |
| 787 | struct cryptd_instance_ctx *ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 788 | struct hashd_instance_ctx *hctx = crypto_instance_ctx(inst); |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 789 | struct aead_instance_ctx *aead_ctx = crypto_instance_ctx(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 790 | |
| 791 | switch (inst->alg.cra_flags & CRYPTO_ALG_TYPE_MASK) { |
| 792 | case CRYPTO_ALG_TYPE_AHASH: |
| 793 | crypto_drop_shash(&hctx->spawn); |
| 794 | kfree(ahash_instance(inst)); |
| 795 | return; |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 796 | case CRYPTO_ALG_TYPE_AEAD: |
| 797 | crypto_drop_spawn(&aead_ctx->aead_spawn.base); |
| 798 | kfree(inst); |
| 799 | return; |
| 800 | default: |
| 801 | crypto_drop_spawn(&ctx->spawn); |
| 802 | kfree(inst); |
Herbert Xu | 0b535ad | 2009-07-14 19:11:32 +0800 | [diff] [blame] | 803 | } |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 804 | } |
| 805 | |
| 806 | static struct crypto_template cryptd_tmpl = { |
| 807 | .name = "cryptd", |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 808 | .create = cryptd_create, |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 809 | .free = cryptd_free, |
| 810 | .module = THIS_MODULE, |
| 811 | }; |
| 812 | |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 813 | struct cryptd_ablkcipher *cryptd_alloc_ablkcipher(const char *alg_name, |
| 814 | u32 type, u32 mask) |
| 815 | { |
| 816 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 817 | struct crypto_tfm *tfm; |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 818 | |
| 819 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 820 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 821 | return ERR_PTR(-EINVAL); |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 822 | type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); |
| 823 | type |= CRYPTO_ALG_TYPE_BLKCIPHER; |
| 824 | mask &= ~CRYPTO_ALG_TYPE_MASK; |
| 825 | mask |= (CRYPTO_ALG_GENIV | CRYPTO_ALG_TYPE_BLKCIPHER_MASK); |
| 826 | tfm = crypto_alloc_base(cryptd_alg_name, type, mask); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 827 | if (IS_ERR(tfm)) |
| 828 | return ERR_CAST(tfm); |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 829 | if (tfm->__crt_alg->cra_module != THIS_MODULE) { |
| 830 | crypto_free_tfm(tfm); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 831 | return ERR_PTR(-EINVAL); |
| 832 | } |
| 833 | |
Huang Ying | 505fd21 | 2009-03-29 15:33:53 +0800 | [diff] [blame] | 834 | return __cryptd_ablkcipher_cast(__crypto_ablkcipher_cast(tfm)); |
Huang Ying | 1cac2cb | 2009-01-18 16:19:46 +1100 | [diff] [blame] | 835 | } |
| 836 | EXPORT_SYMBOL_GPL(cryptd_alloc_ablkcipher); |
| 837 | |
| 838 | struct crypto_blkcipher *cryptd_ablkcipher_child(struct cryptd_ablkcipher *tfm) |
| 839 | { |
| 840 | struct cryptd_blkcipher_ctx *ctx = crypto_ablkcipher_ctx(&tfm->base); |
| 841 | return ctx->child; |
| 842 | } |
| 843 | EXPORT_SYMBOL_GPL(cryptd_ablkcipher_child); |
| 844 | |
| 845 | void cryptd_free_ablkcipher(struct cryptd_ablkcipher *tfm) |
| 846 | { |
| 847 | crypto_free_ablkcipher(&tfm->base); |
| 848 | } |
| 849 | EXPORT_SYMBOL_GPL(cryptd_free_ablkcipher); |
| 850 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 851 | struct cryptd_ahash *cryptd_alloc_ahash(const char *alg_name, |
| 852 | u32 type, u32 mask) |
| 853 | { |
| 854 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
| 855 | struct crypto_ahash *tfm; |
| 856 | |
| 857 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 858 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 859 | return ERR_PTR(-EINVAL); |
| 860 | tfm = crypto_alloc_ahash(cryptd_alg_name, type, mask); |
| 861 | if (IS_ERR(tfm)) |
| 862 | return ERR_CAST(tfm); |
| 863 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 864 | crypto_free_ahash(tfm); |
| 865 | return ERR_PTR(-EINVAL); |
| 866 | } |
| 867 | |
| 868 | return __cryptd_ahash_cast(tfm); |
| 869 | } |
| 870 | EXPORT_SYMBOL_GPL(cryptd_alloc_ahash); |
| 871 | |
| 872 | struct crypto_shash *cryptd_ahash_child(struct cryptd_ahash *tfm) |
| 873 | { |
| 874 | struct cryptd_hash_ctx *ctx = crypto_ahash_ctx(&tfm->base); |
| 875 | |
| 876 | return ctx->child; |
| 877 | } |
| 878 | EXPORT_SYMBOL_GPL(cryptd_ahash_child); |
| 879 | |
Huang Ying | 0e1227d | 2009-10-19 11:53:06 +0900 | [diff] [blame] | 880 | struct shash_desc *cryptd_shash_desc(struct ahash_request *req) |
| 881 | { |
| 882 | struct cryptd_hash_request_ctx *rctx = ahash_request_ctx(req); |
| 883 | return &rctx->desc; |
| 884 | } |
| 885 | EXPORT_SYMBOL_GPL(cryptd_shash_desc); |
| 886 | |
Huang Ying | ace1366 | 2009-08-06 15:35:20 +1000 | [diff] [blame] | 887 | void cryptd_free_ahash(struct cryptd_ahash *tfm) |
| 888 | { |
| 889 | crypto_free_ahash(&tfm->base); |
| 890 | } |
| 891 | EXPORT_SYMBOL_GPL(cryptd_free_ahash); |
| 892 | |
Adrian Hoban | 298c926 | 2010-09-20 16:05:12 +0800 | [diff] [blame] | 893 | struct cryptd_aead *cryptd_alloc_aead(const char *alg_name, |
| 894 | u32 type, u32 mask) |
| 895 | { |
| 896 | char cryptd_alg_name[CRYPTO_MAX_ALG_NAME]; |
| 897 | struct crypto_aead *tfm; |
| 898 | |
| 899 | if (snprintf(cryptd_alg_name, CRYPTO_MAX_ALG_NAME, |
| 900 | "cryptd(%s)", alg_name) >= CRYPTO_MAX_ALG_NAME) |
| 901 | return ERR_PTR(-EINVAL); |
| 902 | tfm = crypto_alloc_aead(cryptd_alg_name, type, mask); |
| 903 | if (IS_ERR(tfm)) |
| 904 | return ERR_CAST(tfm); |
| 905 | if (tfm->base.__crt_alg->cra_module != THIS_MODULE) { |
| 906 | crypto_free_aead(tfm); |
| 907 | return ERR_PTR(-EINVAL); |
| 908 | } |
| 909 | return __cryptd_aead_cast(tfm); |
| 910 | } |
| 911 | EXPORT_SYMBOL_GPL(cryptd_alloc_aead); |
| 912 | |
| 913 | struct crypto_aead *cryptd_aead_child(struct cryptd_aead *tfm) |
| 914 | { |
| 915 | struct cryptd_aead_ctx *ctx; |
| 916 | ctx = crypto_aead_ctx(&tfm->base); |
| 917 | return ctx->child; |
| 918 | } |
| 919 | EXPORT_SYMBOL_GPL(cryptd_aead_child); |
| 920 | |
| 921 | void cryptd_free_aead(struct cryptd_aead *tfm) |
| 922 | { |
| 923 | crypto_free_aead(&tfm->base); |
| 924 | } |
| 925 | EXPORT_SYMBOL_GPL(cryptd_free_aead); |
| 926 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 927 | static int __init cryptd_init(void) |
| 928 | { |
| 929 | int err; |
| 930 | |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 931 | err = cryptd_init_queue(&queue, CRYPTD_MAX_CPU_QLEN); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 932 | if (err) |
| 933 | return err; |
| 934 | |
| 935 | err = crypto_register_template(&cryptd_tmpl); |
| 936 | if (err) |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 937 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 938 | |
| 939 | return err; |
| 940 | } |
| 941 | |
| 942 | static void __exit cryptd_exit(void) |
| 943 | { |
Huang Ying | 254eff7 | 2009-02-19 14:42:19 +0800 | [diff] [blame] | 944 | cryptd_fini_queue(&queue); |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 945 | crypto_unregister_template(&cryptd_tmpl); |
| 946 | } |
| 947 | |
| 948 | module_init(cryptd_init); |
| 949 | module_exit(cryptd_exit); |
| 950 | |
| 951 | MODULE_LICENSE("GPL"); |
| 952 | MODULE_DESCRIPTION("Software async crypto daemon"); |