Herbert Xu | cce9e06 | 2006-08-21 21:08:13 +1000 | [diff] [blame] | 1 | /* |
| 2 | * Cryptographic API for algorithms (i.e., low-level API). |
| 3 | * |
| 4 | * Copyright (c) 2006 Herbert Xu <herbert@gondor.apana.org.au> |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or modify it |
| 7 | * under the terms of the GNU General Public License as published by the Free |
| 8 | * Software Foundation; either version 2 of the License, or (at your option) |
| 9 | * any later version. |
| 10 | * |
| 11 | */ |
| 12 | #ifndef _CRYPTO_ALGAPI_H |
| 13 | #define _CRYPTO_ALGAPI_H |
| 14 | |
| 15 | #include <linux/crypto.h> |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 16 | #include <linux/list.h> |
| 17 | #include <linux/kernel.h> |
Baolin Wang | 735d37b | 2016-01-26 20:25:39 +0800 | [diff] [blame^] | 18 | #include <linux/kthread.h> |
Steffen Klassert | b6aa63c | 2011-09-27 07:24:29 +0200 | [diff] [blame] | 19 | #include <linux/skbuff.h> |
Herbert Xu | cce9e06 | 2006-08-21 21:08:13 +1000 | [diff] [blame] | 20 | |
Herbert Xu | 5d1d65f | 2015-05-11 17:48:12 +0800 | [diff] [blame] | 21 | struct crypto_aead; |
Herbert Xu | 319382a | 2015-07-09 07:17:15 +0800 | [diff] [blame] | 22 | struct crypto_instance; |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 23 | struct module; |
Herbert Xu | ebc610e | 2007-01-01 18:37:02 +1100 | [diff] [blame] | 24 | struct rtattr; |
Herbert Xu | e853c3c | 2006-08-22 00:06:54 +1000 | [diff] [blame] | 25 | struct seq_file; |
| 26 | |
| 27 | struct crypto_type { |
Herbert Xu | 27d2a33 | 2007-01-24 20:50:26 +1100 | [diff] [blame] | 28 | unsigned int (*ctxsize)(struct crypto_alg *alg, u32 type, u32 mask); |
Herbert Xu | 2ca33da | 2009-07-13 20:46:25 +0800 | [diff] [blame] | 29 | unsigned int (*extsize)(struct crypto_alg *alg); |
Herbert Xu | 27d2a33 | 2007-01-24 20:50:26 +1100 | [diff] [blame] | 30 | int (*init)(struct crypto_tfm *tfm, u32 type, u32 mask); |
Herbert Xu | 2ca33da | 2009-07-13 20:46:25 +0800 | [diff] [blame] | 31 | int (*init_tfm)(struct crypto_tfm *tfm); |
Herbert Xu | e853c3c | 2006-08-22 00:06:54 +1000 | [diff] [blame] | 32 | void (*show)(struct seq_file *m, struct crypto_alg *alg); |
Steffen Klassert | b6aa63c | 2011-09-27 07:24:29 +0200 | [diff] [blame] | 33 | int (*report)(struct sk_buff *skb, struct crypto_alg *alg); |
Herbert Xu | 7b0bac6 | 2008-09-21 06:52:53 +0900 | [diff] [blame] | 34 | struct crypto_alg *(*lookup)(const char *name, u32 type, u32 mask); |
Herbert Xu | 319382a | 2015-07-09 07:17:15 +0800 | [diff] [blame] | 35 | void (*free)(struct crypto_instance *inst); |
Herbert Xu | 7b0bac6 | 2008-09-21 06:52:53 +0900 | [diff] [blame] | 36 | |
| 37 | unsigned int type; |
| 38 | unsigned int maskclear; |
| 39 | unsigned int maskset; |
| 40 | unsigned int tfmsize; |
Herbert Xu | e853c3c | 2006-08-22 00:06:54 +1000 | [diff] [blame] | 41 | }; |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 42 | |
| 43 | struct crypto_instance { |
| 44 | struct crypto_alg alg; |
| 45 | |
| 46 | struct crypto_template *tmpl; |
| 47 | struct hlist_node list; |
| 48 | |
| 49 | void *__ctx[] CRYPTO_MINALIGN_ATTR; |
| 50 | }; |
| 51 | |
| 52 | struct crypto_template { |
| 53 | struct list_head list; |
| 54 | struct hlist_head instances; |
| 55 | struct module *module; |
| 56 | |
Herbert Xu | ebc610e | 2007-01-01 18:37:02 +1100 | [diff] [blame] | 57 | struct crypto_instance *(*alloc)(struct rtattr **tb); |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 58 | void (*free)(struct crypto_instance *inst); |
Herbert Xu | f2ac72e | 2009-07-07 12:30:33 +0800 | [diff] [blame] | 59 | int (*create)(struct crypto_template *tmpl, struct rtattr **tb); |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 60 | |
| 61 | char name[CRYPTO_MAX_ALG_NAME]; |
| 62 | }; |
| 63 | |
Herbert Xu | 6bfd480 | 2006-09-21 11:39:29 +1000 | [diff] [blame] | 64 | struct crypto_spawn { |
| 65 | struct list_head list; |
| 66 | struct crypto_alg *alg; |
| 67 | struct crypto_instance *inst; |
Herbert Xu | 97eedce | 2009-07-08 15:55:52 +0800 | [diff] [blame] | 68 | const struct crypto_type *frontend; |
Herbert Xu | a73e699 | 2007-04-08 21:31:36 +1000 | [diff] [blame] | 69 | u32 mask; |
Herbert Xu | 6bfd480 | 2006-09-21 11:39:29 +1000 | [diff] [blame] | 70 | }; |
| 71 | |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 72 | struct crypto_queue { |
| 73 | struct list_head list; |
| 74 | struct list_head *backlog; |
| 75 | |
| 76 | unsigned int qlen; |
| 77 | unsigned int max_qlen; |
| 78 | }; |
| 79 | |
Herbert Xu | 5c64097 | 2006-08-12 21:56:17 +1000 | [diff] [blame] | 80 | struct scatter_walk { |
| 81 | struct scatterlist *sg; |
| 82 | unsigned int offset; |
| 83 | }; |
| 84 | |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 85 | struct blkcipher_walk { |
| 86 | union { |
| 87 | struct { |
| 88 | struct page *page; |
| 89 | unsigned long offset; |
| 90 | } phys; |
| 91 | |
| 92 | struct { |
| 93 | u8 *page; |
| 94 | u8 *addr; |
| 95 | } virt; |
| 96 | } src, dst; |
| 97 | |
| 98 | struct scatter_walk in; |
| 99 | unsigned int nbytes; |
| 100 | |
| 101 | struct scatter_walk out; |
| 102 | unsigned int total; |
| 103 | |
| 104 | void *page; |
| 105 | u8 *buffer; |
| 106 | u8 *iv; |
Ard Biesheuvel | 822be00 | 2014-03-04 13:28:38 +0800 | [diff] [blame] | 107 | unsigned int ivsize; |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 108 | |
| 109 | int flags; |
Ard Biesheuvel | 822be00 | 2014-03-04 13:28:38 +0800 | [diff] [blame] | 110 | unsigned int walk_blocksize; |
| 111 | unsigned int cipher_blocksize; |
| 112 | unsigned int alignmask; |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 113 | }; |
| 114 | |
David S. Miller | bf06099 | 2010-05-19 14:13:07 +1000 | [diff] [blame] | 115 | struct ablkcipher_walk { |
| 116 | struct { |
| 117 | struct page *page; |
| 118 | unsigned int offset; |
| 119 | } src, dst; |
| 120 | |
| 121 | struct scatter_walk in; |
| 122 | unsigned int nbytes; |
| 123 | struct scatter_walk out; |
| 124 | unsigned int total; |
| 125 | struct list_head buffers; |
| 126 | u8 *iv_buffer; |
| 127 | u8 *iv; |
| 128 | int flags; |
| 129 | unsigned int blocksize; |
| 130 | }; |
| 131 | |
Baolin Wang | 735d37b | 2016-01-26 20:25:39 +0800 | [diff] [blame^] | 132 | #define ENGINE_NAME_LEN 30 |
| 133 | /* |
| 134 | * struct crypto_engine - crypto hardware engine |
| 135 | * @name: the engine name |
| 136 | * @idling: the engine is entering idle state |
| 137 | * @busy: request pump is busy |
| 138 | * @running: the engine is on working |
| 139 | * @cur_req_prepared: current request is prepared |
| 140 | * @list: link with the global crypto engine list |
| 141 | * @queue_lock: spinlock to syncronise access to request queue |
| 142 | * @queue: the crypto queue of the engine |
| 143 | * @rt: whether this queue is set to run as a realtime task |
| 144 | * @prepare_crypt_hardware: a request will soon arrive from the queue |
| 145 | * so the subsystem requests the driver to prepare the hardware |
| 146 | * by issuing this call |
| 147 | * @unprepare_crypt_hardware: there are currently no more requests on the |
| 148 | * queue so the subsystem notifies the driver that it may relax the |
| 149 | * hardware by issuing this call |
| 150 | * @prepare_request: do some prepare if need before handle the current request |
| 151 | * @unprepare_request: undo any work done by prepare_message() |
| 152 | * @crypt_one_request: do encryption for current request |
| 153 | * @kworker: thread struct for request pump |
| 154 | * @kworker_task: pointer to task for request pump kworker thread |
| 155 | * @pump_requests: work struct for scheduling work to the request pump |
| 156 | * @priv_data: the engine private data |
| 157 | * @cur_req: the current request which is on processing |
| 158 | */ |
| 159 | struct crypto_engine { |
| 160 | char name[ENGINE_NAME_LEN]; |
| 161 | bool idling; |
| 162 | bool busy; |
| 163 | bool running; |
| 164 | bool cur_req_prepared; |
| 165 | |
| 166 | struct list_head list; |
| 167 | spinlock_t queue_lock; |
| 168 | struct crypto_queue queue; |
| 169 | |
| 170 | bool rt; |
| 171 | |
| 172 | int (*prepare_crypt_hardware)(struct crypto_engine *engine); |
| 173 | int (*unprepare_crypt_hardware)(struct crypto_engine *engine); |
| 174 | |
| 175 | int (*prepare_request)(struct crypto_engine *engine, |
| 176 | struct ablkcipher_request *req); |
| 177 | int (*unprepare_request)(struct crypto_engine *engine, |
| 178 | struct ablkcipher_request *req); |
| 179 | int (*crypt_one_request)(struct crypto_engine *engine, |
| 180 | struct ablkcipher_request *req); |
| 181 | |
| 182 | struct kthread_worker kworker; |
| 183 | struct task_struct *kworker_task; |
| 184 | struct kthread_work pump_requests; |
| 185 | |
| 186 | void *priv_data; |
| 187 | struct ablkcipher_request *cur_req; |
| 188 | }; |
| 189 | |
| 190 | int crypto_transfer_request(struct crypto_engine *engine, |
| 191 | struct ablkcipher_request *req, bool need_pump); |
| 192 | int crypto_transfer_request_to_engine(struct crypto_engine *engine, |
| 193 | struct ablkcipher_request *req); |
| 194 | void crypto_finalize_request(struct crypto_engine *engine, |
| 195 | struct ablkcipher_request *req, int err); |
| 196 | int crypto_engine_start(struct crypto_engine *engine); |
| 197 | int crypto_engine_stop(struct crypto_engine *engine); |
| 198 | struct crypto_engine *crypto_engine_alloc_init(struct device *dev, bool rt); |
| 199 | int crypto_engine_exit(struct crypto_engine *engine); |
| 200 | |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 201 | extern const struct crypto_type crypto_ablkcipher_type; |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 202 | extern const struct crypto_type crypto_blkcipher_type; |
| 203 | |
Herbert Xu | db131ef | 2006-09-21 11:44:08 +1000 | [diff] [blame] | 204 | void crypto_mod_put(struct crypto_alg *alg); |
| 205 | |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 206 | int crypto_register_template(struct crypto_template *tmpl); |
| 207 | void crypto_unregister_template(struct crypto_template *tmpl); |
| 208 | struct crypto_template *crypto_lookup_template(const char *name); |
| 209 | |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 210 | int crypto_register_instance(struct crypto_template *tmpl, |
| 211 | struct crypto_instance *inst); |
Herbert Xu | 87b1675 | 2015-04-02 22:39:40 +0800 | [diff] [blame] | 212 | int crypto_unregister_instance(struct crypto_instance *inst); |
Herbert Xu | 9cd899a | 2009-07-14 18:45:45 +0800 | [diff] [blame] | 213 | |
Herbert Xu | 6bfd480 | 2006-09-21 11:39:29 +1000 | [diff] [blame] | 214 | int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
Herbert Xu | a73e699 | 2007-04-08 21:31:36 +1000 | [diff] [blame] | 215 | struct crypto_instance *inst, u32 mask); |
Herbert Xu | 97eedce | 2009-07-08 15:55:52 +0800 | [diff] [blame] | 216 | int crypto_init_spawn2(struct crypto_spawn *spawn, struct crypto_alg *alg, |
| 217 | struct crypto_instance *inst, |
| 218 | const struct crypto_type *frontend); |
Herbert Xu | d6ef2f1 | 2015-05-11 17:47:39 +0800 | [diff] [blame] | 219 | int crypto_grab_spawn(struct crypto_spawn *spawn, const char *name, |
| 220 | u32 type, u32 mask); |
Herbert Xu | 97eedce | 2009-07-08 15:55:52 +0800 | [diff] [blame] | 221 | |
Herbert Xu | 6bfd480 | 2006-09-21 11:39:29 +1000 | [diff] [blame] | 222 | void crypto_drop_spawn(struct crypto_spawn *spawn); |
Herbert Xu | 2e306ee | 2006-12-17 10:05:58 +1100 | [diff] [blame] | 223 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn, u32 type, |
| 224 | u32 mask); |
Herbert Xu | 97eedce | 2009-07-08 15:55:52 +0800 | [diff] [blame] | 225 | void *crypto_spawn_tfm2(struct crypto_spawn *spawn); |
Herbert Xu | 6bfd480 | 2006-09-21 11:39:29 +1000 | [diff] [blame] | 226 | |
Herbert Xu | 378f4f5 | 2007-12-17 20:07:31 +0800 | [diff] [blame] | 227 | static inline void crypto_set_spawn(struct crypto_spawn *spawn, |
| 228 | struct crypto_instance *inst) |
| 229 | { |
| 230 | spawn->inst = inst; |
| 231 | } |
| 232 | |
Herbert Xu | ebc610e | 2007-01-01 18:37:02 +1100 | [diff] [blame] | 233 | struct crypto_attr_type *crypto_get_attr_type(struct rtattr **tb); |
| 234 | int crypto_check_attr_type(struct rtattr **tb, u32 type); |
Herbert Xu | 68b6c7d | 2007-12-07 20:18:17 +0800 | [diff] [blame] | 235 | const char *crypto_attr_alg_name(struct rtattr *rta); |
Herbert Xu | d06854f | 2009-07-08 17:53:16 +0800 | [diff] [blame] | 236 | struct crypto_alg *crypto_attr_alg2(struct rtattr *rta, |
| 237 | const struct crypto_type *frontend, |
| 238 | u32 type, u32 mask); |
| 239 | |
| 240 | static inline struct crypto_alg *crypto_attr_alg(struct rtattr *rta, |
| 241 | u32 type, u32 mask) |
| 242 | { |
| 243 | return crypto_attr_alg2(rta, NULL, type, mask); |
| 244 | } |
| 245 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 246 | int crypto_attr_u32(struct rtattr *rta, u32 *num); |
Herbert Xu | 70ec7bb | 2009-07-07 14:07:37 +0800 | [diff] [blame] | 247 | void *crypto_alloc_instance2(const char *name, struct crypto_alg *alg, |
| 248 | unsigned int head); |
Herbert Xu | 7fed0bf | 2006-08-06 23:10:45 +1000 | [diff] [blame] | 249 | struct crypto_instance *crypto_alloc_instance(const char *name, |
| 250 | struct crypto_alg *alg); |
| 251 | |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 252 | void crypto_init_queue(struct crypto_queue *queue, unsigned int max_qlen); |
| 253 | int crypto_enqueue_request(struct crypto_queue *queue, |
| 254 | struct crypto_async_request *request); |
| 255 | struct crypto_async_request *crypto_dequeue_request(struct crypto_queue *queue); |
| 256 | int crypto_tfm_in_queue(struct crypto_queue *queue, struct crypto_tfm *tfm); |
Baolin Wang | 9f93a8a | 2016-01-26 20:25:38 +0800 | [diff] [blame] | 257 | static inline unsigned int crypto_queue_len(struct crypto_queue *queue) |
| 258 | { |
| 259 | return queue->qlen; |
| 260 | } |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 261 | |
Herbert Xu | 7613636 | 2007-11-20 17:26:06 +0800 | [diff] [blame] | 262 | /* These functions require the input/output to be aligned as u32. */ |
| 263 | void crypto_inc(u8 *a, unsigned int size); |
| 264 | void crypto_xor(u8 *dst, const u8 *src, unsigned int size); |
| 265 | |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 266 | int blkcipher_walk_done(struct blkcipher_desc *desc, |
| 267 | struct blkcipher_walk *walk, int err); |
| 268 | int blkcipher_walk_virt(struct blkcipher_desc *desc, |
| 269 | struct blkcipher_walk *walk); |
| 270 | int blkcipher_walk_phys(struct blkcipher_desc *desc, |
| 271 | struct blkcipher_walk *walk); |
Herbert Xu | 7607bd8 | 2007-10-04 15:24:05 +0800 | [diff] [blame] | 272 | int blkcipher_walk_virt_block(struct blkcipher_desc *desc, |
| 273 | struct blkcipher_walk *walk, |
| 274 | unsigned int blocksize); |
Ard Biesheuvel | 4f7f1d7 | 2014-03-04 13:28:39 +0800 | [diff] [blame] | 275 | int blkcipher_aead_walk_virt_block(struct blkcipher_desc *desc, |
| 276 | struct blkcipher_walk *walk, |
| 277 | struct crypto_aead *tfm, |
| 278 | unsigned int blocksize); |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 279 | |
David S. Miller | bf06099 | 2010-05-19 14:13:07 +1000 | [diff] [blame] | 280 | int ablkcipher_walk_done(struct ablkcipher_request *req, |
| 281 | struct ablkcipher_walk *walk, int err); |
| 282 | int ablkcipher_walk_phys(struct ablkcipher_request *req, |
| 283 | struct ablkcipher_walk *walk); |
| 284 | void __ablkcipher_walk_complete(struct ablkcipher_walk *walk); |
| 285 | |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 286 | static inline void *crypto_tfm_ctx_aligned(struct crypto_tfm *tfm) |
| 287 | { |
Herbert Xu | ab30046 | 2009-07-24 15:26:15 +0800 | [diff] [blame] | 288 | return PTR_ALIGN(crypto_tfm_ctx(tfm), |
| 289 | crypto_tfm_alg_alignmask(tfm) + 1); |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 290 | } |
| 291 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 292 | static inline struct crypto_instance *crypto_tfm_alg_instance( |
| 293 | struct crypto_tfm *tfm) |
| 294 | { |
| 295 | return container_of(tfm->__crt_alg, struct crypto_instance, alg); |
| 296 | } |
| 297 | |
Herbert Xu | 4cc7720 | 2006-08-06 21:16:34 +1000 | [diff] [blame] | 298 | static inline void *crypto_instance_ctx(struct crypto_instance *inst) |
| 299 | { |
| 300 | return inst->__ctx; |
| 301 | } |
| 302 | |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 303 | static inline struct ablkcipher_alg *crypto_ablkcipher_alg( |
| 304 | struct crypto_ablkcipher *tfm) |
| 305 | { |
| 306 | return &crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_ablkcipher; |
| 307 | } |
| 308 | |
| 309 | static inline void *crypto_ablkcipher_ctx(struct crypto_ablkcipher *tfm) |
| 310 | { |
| 311 | return crypto_tfm_ctx(&tfm->base); |
| 312 | } |
| 313 | |
Sebastian Siewior | aa379a6 | 2007-08-02 20:41:53 +0800 | [diff] [blame] | 314 | static inline void *crypto_ablkcipher_ctx_aligned(struct crypto_ablkcipher *tfm) |
| 315 | { |
| 316 | return crypto_tfm_ctx_aligned(&tfm->base); |
| 317 | } |
| 318 | |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 319 | static inline struct crypto_blkcipher *crypto_spawn_blkcipher( |
| 320 | struct crypto_spawn *spawn) |
| 321 | { |
| 322 | u32 type = CRYPTO_ALG_TYPE_BLKCIPHER; |
Herbert Xu | 332f8840 | 2007-11-15 22:36:07 +0800 | [diff] [blame] | 323 | u32 mask = CRYPTO_ALG_TYPE_MASK; |
Herbert Xu | 124b53d | 2007-04-16 20:49:20 +1000 | [diff] [blame] | 324 | |
| 325 | return __crypto_blkcipher_cast(crypto_spawn_tfm(spawn, type, mask)); |
| 326 | } |
| 327 | |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 328 | static inline void *crypto_blkcipher_ctx(struct crypto_blkcipher *tfm) |
| 329 | { |
| 330 | return crypto_tfm_ctx(&tfm->base); |
| 331 | } |
| 332 | |
| 333 | static inline void *crypto_blkcipher_ctx_aligned(struct crypto_blkcipher *tfm) |
| 334 | { |
| 335 | return crypto_tfm_ctx_aligned(&tfm->base); |
| 336 | } |
| 337 | |
Herbert Xu | 2e306ee | 2006-12-17 10:05:58 +1100 | [diff] [blame] | 338 | static inline struct crypto_cipher *crypto_spawn_cipher( |
| 339 | struct crypto_spawn *spawn) |
| 340 | { |
| 341 | u32 type = CRYPTO_ALG_TYPE_CIPHER; |
| 342 | u32 mask = CRYPTO_ALG_TYPE_MASK; |
| 343 | |
| 344 | return __crypto_cipher_cast(crypto_spawn_tfm(spawn, type, mask)); |
| 345 | } |
| 346 | |
Herbert Xu | f28776a | 2006-08-13 20:58:18 +1000 | [diff] [blame] | 347 | static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm) |
| 348 | { |
| 349 | return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher; |
| 350 | } |
| 351 | |
Herbert Xu | 2e306ee | 2006-12-17 10:05:58 +1100 | [diff] [blame] | 352 | static inline struct crypto_hash *crypto_spawn_hash(struct crypto_spawn *spawn) |
| 353 | { |
| 354 | u32 type = CRYPTO_ALG_TYPE_HASH; |
| 355 | u32 mask = CRYPTO_ALG_TYPE_HASH_MASK; |
| 356 | |
| 357 | return __crypto_hash_cast(crypto_spawn_tfm(spawn, type, mask)); |
| 358 | } |
| 359 | |
Herbert Xu | 5f7082e | 2008-08-31 22:21:09 +1000 | [diff] [blame] | 360 | static inline void *crypto_hash_ctx(struct crypto_hash *tfm) |
| 361 | { |
| 362 | return crypto_tfm_ctx(&tfm->base); |
| 363 | } |
| 364 | |
Herbert Xu | 055bcee | 2006-08-19 22:24:23 +1000 | [diff] [blame] | 365 | static inline void *crypto_hash_ctx_aligned(struct crypto_hash *tfm) |
| 366 | { |
| 367 | return crypto_tfm_ctx_aligned(&tfm->base); |
| 368 | } |
| 369 | |
Herbert Xu | 5cde0af | 2006-08-22 00:07:53 +1000 | [diff] [blame] | 370 | static inline void blkcipher_walk_init(struct blkcipher_walk *walk, |
| 371 | struct scatterlist *dst, |
| 372 | struct scatterlist *src, |
| 373 | unsigned int nbytes) |
| 374 | { |
| 375 | walk->in.sg = src; |
| 376 | walk->out.sg = dst; |
| 377 | walk->total = nbytes; |
| 378 | } |
| 379 | |
David S. Miller | bf06099 | 2010-05-19 14:13:07 +1000 | [diff] [blame] | 380 | static inline void ablkcipher_walk_init(struct ablkcipher_walk *walk, |
| 381 | struct scatterlist *dst, |
| 382 | struct scatterlist *src, |
| 383 | unsigned int nbytes) |
| 384 | { |
| 385 | walk->in.sg = src; |
| 386 | walk->out.sg = dst; |
| 387 | walk->total = nbytes; |
| 388 | INIT_LIST_HEAD(&walk->buffers); |
| 389 | } |
| 390 | |
| 391 | static inline void ablkcipher_walk_complete(struct ablkcipher_walk *walk) |
| 392 | { |
| 393 | if (unlikely(!list_empty(&walk->buffers))) |
| 394 | __ablkcipher_walk_complete(walk); |
| 395 | } |
| 396 | |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 397 | static inline struct crypto_async_request *crypto_get_backlog( |
| 398 | struct crypto_queue *queue) |
| 399 | { |
| 400 | return queue->backlog == &queue->list ? NULL : |
| 401 | container_of(queue->backlog, struct crypto_async_request, list); |
| 402 | } |
| 403 | |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 404 | static inline int ablkcipher_enqueue_request(struct crypto_queue *queue, |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 405 | struct ablkcipher_request *request) |
| 406 | { |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 407 | return crypto_enqueue_request(queue, &request->base); |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 408 | } |
| 409 | |
| 410 | static inline struct ablkcipher_request *ablkcipher_dequeue_request( |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 411 | struct crypto_queue *queue) |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 412 | { |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 413 | return ablkcipher_request_cast(crypto_dequeue_request(queue)); |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 414 | } |
| 415 | |
| 416 | static inline void *ablkcipher_request_ctx(struct ablkcipher_request *req) |
| 417 | { |
| 418 | return req->__ctx; |
| 419 | } |
| 420 | |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 421 | static inline int ablkcipher_tfm_in_queue(struct crypto_queue *queue, |
| 422 | struct crypto_ablkcipher *tfm) |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 423 | { |
Herbert Xu | 2de98e7 | 2007-08-26 19:12:47 +0800 | [diff] [blame] | 424 | return crypto_tfm_in_queue(queue, crypto_ablkcipher_tfm(tfm)); |
Herbert Xu | b5b7f08 | 2007-04-16 20:48:54 +1000 | [diff] [blame] | 425 | } |
| 426 | |
Herbert Xu | 3c09f17 | 2007-08-30 16:24:15 +0800 | [diff] [blame] | 427 | static inline struct crypto_alg *crypto_get_attr_alg(struct rtattr **tb, |
| 428 | u32 type, u32 mask) |
| 429 | { |
| 430 | return crypto_attr_alg(tb[1], type, mask); |
| 431 | } |
| 432 | |
Herbert Xu | 378f4f5 | 2007-12-17 20:07:31 +0800 | [diff] [blame] | 433 | /* |
| 434 | * Returns CRYPTO_ALG_ASYNC if type/mask requires the use of sync algorithms. |
| 435 | * Otherwise returns zero. |
| 436 | */ |
| 437 | static inline int crypto_requires_sync(u32 type, u32 mask) |
| 438 | { |
| 439 | return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC; |
| 440 | } |
| 441 | |
James Yonan | 6bf37e5 | 2013-09-26 02:20:39 -0600 | [diff] [blame] | 442 | noinline unsigned long __crypto_memneq(const void *a, const void *b, size_t size); |
Herbert Xu | cce9e06 | 2006-08-21 21:08:13 +1000 | [diff] [blame] | 443 | |
James Yonan | 6bf37e5 | 2013-09-26 02:20:39 -0600 | [diff] [blame] | 444 | /** |
| 445 | * crypto_memneq - Compare two areas of memory without leaking |
| 446 | * timing information. |
| 447 | * |
| 448 | * @a: One area of memory |
| 449 | * @b: Another area of memory |
| 450 | * @size: The size of the area. |
| 451 | * |
| 452 | * Returns 0 when data is equal, 1 otherwise. |
| 453 | */ |
| 454 | static inline int crypto_memneq(const void *a, const void *b, size_t size) |
| 455 | { |
| 456 | return __crypto_memneq(a, b, size) != 0UL ? 1 : 0; |
| 457 | } |
| 458 | |
Marek Vasut | bb55a4c | 2014-05-26 15:32:05 +0200 | [diff] [blame] | 459 | static inline void crypto_yield(u32 flags) |
| 460 | { |
| 461 | if (flags & CRYPTO_TFM_REQ_MAY_SLEEP) |
| 462 | cond_resched(); |
| 463 | } |
| 464 | |
James Yonan | 6bf37e5 | 2013-09-26 02:20:39 -0600 | [diff] [blame] | 465 | #endif /* _CRYPTO_ALGAPI_H */ |