1 /* SPDX-License-Identifier: GPL-2.0-or-later * 1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /* 2 /*
3 * Scatterlist Cryptographic API. 3 * Scatterlist Cryptographic API.
4 * 4 *
5 * Copyright (c) 2002 James Morris <jmorris@in 5 * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
6 * Copyright (c) 2002 David S. Miller (davem@r 6 * Copyright (c) 2002 David S. Miller (davem@redhat.com)
7 * Copyright (c) 2005 Herbert Xu <herbert@gond 7 * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
8 * 8 *
9 * Portions derived from Cryptoapi, by Alexand 9 * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
10 * and Nettle, by Niels Möller. 10 * and Nettle, by Niels Möller.
11 */ 11 */
12 #ifndef _LINUX_CRYPTO_H 12 #ifndef _LINUX_CRYPTO_H
13 #define _LINUX_CRYPTO_H 13 #define _LINUX_CRYPTO_H
14 14
15 #include <linux/completion.h> !! 15 #include <linux/atomic.h>
>> 16 #include <linux/kernel.h>
>> 17 #include <linux/list.h>
>> 18 #include <linux/bug.h>
16 #include <linux/refcount.h> 19 #include <linux/refcount.h>
17 #include <linux/slab.h> 20 #include <linux/slab.h>
18 #include <linux/types.h> !! 21 #include <linux/completion.h>
>> 22
>> 23 /*
>> 24 * Autoloaded crypto modules should only use a prefixed name to avoid allowing
>> 25 * arbitrary modules to be loaded. Loading from userspace may still need the
>> 26 * unprefixed names, so retains those aliases as well.
>> 27 * This uses __MODULE_INFO directly instead of MODULE_ALIAS because pre-4.3
>> 28 * gcc (e.g. avr32 toolchain) uses __LINE__ for uniqueness, and this macro
>> 29 * expands twice on the same line. Instead, use a separate base name for the
>> 30 * alias.
>> 31 */
>> 32 #define MODULE_ALIAS_CRYPTO(name) \
>> 33 __MODULE_INFO(alias, alias_userspace, name); \
>> 34 __MODULE_INFO(alias, alias_crypto, "crypto-" name)
19 35
20 /* 36 /*
21 * Algorithm masks and types. 37 * Algorithm masks and types.
22 */ 38 */
23 #define CRYPTO_ALG_TYPE_MASK 0x0000 39 #define CRYPTO_ALG_TYPE_MASK 0x0000000f
24 #define CRYPTO_ALG_TYPE_CIPHER 0x0000 40 #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
25 #define CRYPTO_ALG_TYPE_COMPRESS 0x0000 41 #define CRYPTO_ALG_TYPE_COMPRESS 0x00000002
26 #define CRYPTO_ALG_TYPE_AEAD 0x0000 42 #define CRYPTO_ALG_TYPE_AEAD 0x00000003
27 #define CRYPTO_ALG_TYPE_LSKCIPHER 0x0000 <<
28 #define CRYPTO_ALG_TYPE_SKCIPHER 0x0000 43 #define CRYPTO_ALG_TYPE_SKCIPHER 0x00000005
29 #define CRYPTO_ALG_TYPE_AKCIPHER 0x0000 <<
30 #define CRYPTO_ALG_TYPE_SIG 0x0000 <<
31 #define CRYPTO_ALG_TYPE_KPP 0x0000 44 #define CRYPTO_ALG_TYPE_KPP 0x00000008
32 #define CRYPTO_ALG_TYPE_ACOMPRESS 0x0000 45 #define CRYPTO_ALG_TYPE_ACOMPRESS 0x0000000a
33 #define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000 46 #define CRYPTO_ALG_TYPE_SCOMPRESS 0x0000000b
34 #define CRYPTO_ALG_TYPE_RNG 0x0000 47 #define CRYPTO_ALG_TYPE_RNG 0x0000000c
>> 48 #define CRYPTO_ALG_TYPE_AKCIPHER 0x0000000d
35 #define CRYPTO_ALG_TYPE_HASH 0x0000 49 #define CRYPTO_ALG_TYPE_HASH 0x0000000e
36 #define CRYPTO_ALG_TYPE_SHASH 0x0000 50 #define CRYPTO_ALG_TYPE_SHASH 0x0000000e
37 #define CRYPTO_ALG_TYPE_AHASH 0x0000 51 #define CRYPTO_ALG_TYPE_AHASH 0x0000000f
38 52
>> 53 #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
>> 54 #define CRYPTO_ALG_TYPE_AHASH_MASK 0x0000000e
39 #define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000 55 #define CRYPTO_ALG_TYPE_ACOMPRESS_MASK 0x0000000e
40 56
41 #define CRYPTO_ALG_LARVAL 0x0000 57 #define CRYPTO_ALG_LARVAL 0x00000010
42 #define CRYPTO_ALG_DEAD 0x0000 58 #define CRYPTO_ALG_DEAD 0x00000020
43 #define CRYPTO_ALG_DYING 0x0000 59 #define CRYPTO_ALG_DYING 0x00000040
44 #define CRYPTO_ALG_ASYNC 0x0000 60 #define CRYPTO_ALG_ASYNC 0x00000080
45 61
46 /* 62 /*
47 * Set if the algorithm (or an algorithm which 63 * Set if the algorithm (or an algorithm which it uses) requires another
48 * algorithm of the same type to handle corner 64 * algorithm of the same type to handle corner cases.
49 */ 65 */
50 #define CRYPTO_ALG_NEED_FALLBACK 0x0000 66 #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
51 67
52 /* 68 /*
53 * Set if the algorithm has passed automated r 69 * Set if the algorithm has passed automated run-time testing. Note that
54 * if there is no run-time testing for a given 70 * if there is no run-time testing for a given algorithm it is considered
55 * to have passed. 71 * to have passed.
56 */ 72 */
57 73
58 #define CRYPTO_ALG_TESTED 0x0000 74 #define CRYPTO_ALG_TESTED 0x00000400
59 75
60 /* 76 /*
61 * Set if the algorithm is an instance that is 77 * Set if the algorithm is an instance that is built from templates.
62 */ 78 */
63 #define CRYPTO_ALG_INSTANCE 0x0000 79 #define CRYPTO_ALG_INSTANCE 0x00000800
64 80
65 /* Set this bit if the algorithm provided is h 81 /* Set this bit if the algorithm provided is hardware accelerated but
66 * not available to userspace via instruction 82 * not available to userspace via instruction set or so.
67 */ 83 */
68 #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x0000 84 #define CRYPTO_ALG_KERN_DRIVER_ONLY 0x00001000
69 85
70 /* 86 /*
71 * Mark a cipher as a service implementation o 87 * Mark a cipher as a service implementation only usable by another
72 * cipher and never by a normal user of the ke 88 * cipher and never by a normal user of the kernel crypto API
73 */ 89 */
74 #define CRYPTO_ALG_INTERNAL 0x0000 90 #define CRYPTO_ALG_INTERNAL 0x00002000
75 91
76 /* 92 /*
77 * Set if the algorithm has a ->setkey() metho 93 * Set if the algorithm has a ->setkey() method but can be used without
78 * calling it first, i.e. there is a default k 94 * calling it first, i.e. there is a default key.
79 */ 95 */
80 #define CRYPTO_ALG_OPTIONAL_KEY 0x0000 96 #define CRYPTO_ALG_OPTIONAL_KEY 0x00004000
81 97
82 /* 98 /*
83 * Don't trigger module loading 99 * Don't trigger module loading
84 */ 100 */
85 #define CRYPTO_NOLOAD 0x0000 101 #define CRYPTO_NOLOAD 0x00008000
86 102
87 /* 103 /*
88 * The algorithm may allocate memory during re 104 * The algorithm may allocate memory during request processing, i.e. during
89 * encryption, decryption, or hashing. Users 105 * encryption, decryption, or hashing. Users can request an algorithm with this
90 * flag unset if they can't handle memory allo 106 * flag unset if they can't handle memory allocation failures.
91 * 107 *
92 * This flag is currently only implemented for 108 * This flag is currently only implemented for algorithms of type "skcipher",
93 * "aead", "ahash", "shash", and "cipher". Al 109 * "aead", "ahash", "shash", and "cipher". Algorithms of other types might not
94 * have this flag set even if they allocate me 110 * have this flag set even if they allocate memory.
95 * 111 *
96 * In some edge cases, algorithms can allocate 112 * In some edge cases, algorithms can allocate memory regardless of this flag.
97 * To avoid these cases, users must obey the f 113 * To avoid these cases, users must obey the following usage constraints:
98 * skcipher: 114 * skcipher:
99 * - The IV buffer and all scatterlist el 115 * - The IV buffer and all scatterlist elements must be aligned to the
100 * algorithm's alignmask. 116 * algorithm's alignmask.
101 * - If the data were to be divided into 117 * - If the data were to be divided into chunks of size
102 * crypto_skcipher_walksize() (with any 118 * crypto_skcipher_walksize() (with any remainder going at the end), no
103 * chunk can cross a page boundary or a 119 * chunk can cross a page boundary or a scatterlist element boundary.
104 * aead: 120 * aead:
105 * - The IV buffer and all scatterlist el 121 * - The IV buffer and all scatterlist elements must be aligned to the
106 * algorithm's alignmask. 122 * algorithm's alignmask.
107 * - The first scatterlist element must c 123 * - The first scatterlist element must contain all the associated data,
108 * and its pages must be !PageHighMem. 124 * and its pages must be !PageHighMem.
109 * - If the plaintext/ciphertext were to 125 * - If the plaintext/ciphertext were to be divided into chunks of size
110 * crypto_aead_walksize() (with the rem 126 * crypto_aead_walksize() (with the remainder going at the end), no chunk
111 * can cross a page boundary or a scatt 127 * can cross a page boundary or a scatterlist element boundary.
112 * ahash: 128 * ahash:
>> 129 * - The result buffer must be aligned to the algorithm's alignmask.
113 * - crypto_ahash_finup() must not be use 130 * - crypto_ahash_finup() must not be used unless the algorithm implements
114 * ->finup() natively. 131 * ->finup() natively.
115 */ 132 */
116 #define CRYPTO_ALG_ALLOCATES_MEMORY 0x0001 133 #define CRYPTO_ALG_ALLOCATES_MEMORY 0x00010000
117 134
118 /* 135 /*
119 * Mark an algorithm as a service implementati 136 * Mark an algorithm as a service implementation only usable by a
120 * template and never by a normal user of the 137 * template and never by a normal user of the kernel crypto API.
121 * This is intended to be used by algorithms t 138 * This is intended to be used by algorithms that are themselves
122 * not FIPS-approved but may instead be used t 139 * not FIPS-approved but may instead be used to implement parts of
123 * a FIPS-approved algorithm (e.g., dh vs. ffd 140 * a FIPS-approved algorithm (e.g., dh vs. ffdhe2048(dh)).
124 */ 141 */
125 #define CRYPTO_ALG_FIPS_INTERNAL 0x0002 142 #define CRYPTO_ALG_FIPS_INTERNAL 0x00020000
126 143
127 /* 144 /*
128 * Transform masks and values (for crt_flags). 145 * Transform masks and values (for crt_flags).
129 */ 146 */
130 #define CRYPTO_TFM_NEED_KEY 0x0000 147 #define CRYPTO_TFM_NEED_KEY 0x00000001
131 148
132 #define CRYPTO_TFM_REQ_MASK 0x000f 149 #define CRYPTO_TFM_REQ_MASK 0x000fff00
133 #define CRYPTO_TFM_REQ_FORBID_WEAK_KEYS 0x0000 150 #define CRYPTO_TFM_REQ_FORBID_WEAK_KEYS 0x00000100
134 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x0000 151 #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
135 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x0000 152 #define CRYPTO_TFM_REQ_MAY_BACKLOG 0x00000400
136 153
137 /* 154 /*
138 * Miscellaneous stuff. 155 * Miscellaneous stuff.
139 */ 156 */
140 #define CRYPTO_MAX_ALG_NAME 128 157 #define CRYPTO_MAX_ALG_NAME 128
141 158
142 /* 159 /*
143 * The macro CRYPTO_MINALIGN_ATTR (along with 160 * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
144 * declaration) is used to ensure that the cry 161 * declaration) is used to ensure that the crypto_tfm context structure is
145 * aligned correctly for the given architectur 162 * aligned correctly for the given architecture so that there are no alignment
146 * faults for C data types. On architectures 163 * faults for C data types. On architectures that support non-cache coherent
147 * DMA, such as ARM or arm64, it also takes in 164 * DMA, such as ARM or arm64, it also takes into account the minimal alignment
148 * that is required to ensure that the context 165 * that is required to ensure that the context struct member does not share any
149 * cachelines with the rest of the struct. Thi 166 * cachelines with the rest of the struct. This is needed to ensure that cache
150 * maintenance for non-coherent DMA (cache inv 167 * maintenance for non-coherent DMA (cache invalidation in particular) does not
151 * affect data that may be accessed by the CPU 168 * affect data that may be accessed by the CPU concurrently.
152 */ 169 */
153 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN 170 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
154 171
155 #define CRYPTO_MINALIGN_ATTR __attribute__ ((_ 172 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
156 173
>> 174 struct scatterlist;
>> 175 struct crypto_async_request;
157 struct crypto_tfm; 176 struct crypto_tfm;
158 struct crypto_type; 177 struct crypto_type;
159 struct module; <<
160 178
161 typedef void (*crypto_completion_t)(void *req, !! 179 typedef struct crypto_async_request crypto_completion_data_t;
>> 180 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
162 181
163 /** 182 /**
164 * DOC: Block Cipher Context Data Structures 183 * DOC: Block Cipher Context Data Structures
165 * 184 *
166 * These data structures define the operating 185 * These data structures define the operating context for each block cipher
167 * type. 186 * type.
168 */ 187 */
169 188
170 struct crypto_async_request { 189 struct crypto_async_request {
171 struct list_head list; 190 struct list_head list;
172 crypto_completion_t complete; 191 crypto_completion_t complete;
173 void *data; 192 void *data;
174 struct crypto_tfm *tfm; 193 struct crypto_tfm *tfm;
175 194
176 u32 flags; 195 u32 flags;
177 }; 196 };
178 197
179 /** 198 /**
180 * DOC: Block Cipher Algorithm Definitions 199 * DOC: Block Cipher Algorithm Definitions
181 * 200 *
182 * These data structures define modular crypto 201 * These data structures define modular crypto algorithm implementations,
183 * managed via crypto_register_alg() and crypt 202 * managed via crypto_register_alg() and crypto_unregister_alg().
184 */ 203 */
185 204
186 /** 205 /**
187 * struct cipher_alg - single-block symmetric 206 * struct cipher_alg - single-block symmetric ciphers definition
188 * @cia_min_keysize: Minimum key size supporte 207 * @cia_min_keysize: Minimum key size supported by the transformation. This is
189 * the smallest key length s 208 * the smallest key length supported by this transformation
190 * algorithm. This must be s 209 * algorithm. This must be set to one of the pre-defined
191 * values as this is not har 210 * values as this is not hardware specific. Possible values
192 * for this field can be fou 211 * for this field can be found via git grep "_MIN_KEY_SIZE"
193 * include/crypto/ 212 * include/crypto/
194 * @cia_max_keysize: Maximum key size supporte 213 * @cia_max_keysize: Maximum key size supported by the transformation. This is
195 * the largest key length sup 214 * the largest key length supported by this transformation
196 * algorithm. This must be se 215 * algorithm. This must be set to one of the pre-defined values
197 * as this is not hardware sp 216 * as this is not hardware specific. Possible values for this
198 * field can be found via git 217 * field can be found via git grep "_MAX_KEY_SIZE"
199 * include/crypto/ 218 * include/crypto/
200 * @cia_setkey: Set key for the transformation 219 * @cia_setkey: Set key for the transformation. This function is used to either
201 * program a supplied key into th 220 * program a supplied key into the hardware or store the key in the
202 * transformation context for pro 221 * transformation context for programming it later. Note that this
203 * function does modify the trans 222 * function does modify the transformation context. This function
204 * can be called multiple times d 223 * can be called multiple times during the existence of the
205 * transformation object, so one 224 * transformation object, so one must make sure the key is properly
206 * reprogrammed into the hardware 225 * reprogrammed into the hardware. This function is also
207 * responsible for checking the k 226 * responsible for checking the key length for validity.
208 * @cia_encrypt: Encrypt a single block. This 227 * @cia_encrypt: Encrypt a single block. This function is used to encrypt a
209 * single block of data, which m 228 * single block of data, which must be @cra_blocksize big. This
210 * always operates on a full @cr 229 * always operates on a full @cra_blocksize and it is not possible
211 * to encrypt a block of smaller 230 * to encrypt a block of smaller size. The supplied buffers must
212 * therefore also be at least of 231 * therefore also be at least of @cra_blocksize size. Both the
213 * input and output buffers are 232 * input and output buffers are always aligned to @cra_alignmask.
214 * In case either of the input o 233 * In case either of the input or output buffer supplied by user
215 * of the crypto API is not alig 234 * of the crypto API is not aligned to @cra_alignmask, the crypto
216 * API will re-align the buffers 235 * API will re-align the buffers. The re-alignment means that a
217 * new buffer will be allocated, 236 * new buffer will be allocated, the data will be copied into the
218 * new buffer, then the processi 237 * new buffer, then the processing will happen on the new buffer,
219 * then the data will be copied 238 * then the data will be copied back into the original buffer and
220 * finally the new buffer will b 239 * finally the new buffer will be freed. In case a software
221 * fallback was put in place in 240 * fallback was put in place in the @cra_init call, this function
222 * might need to use the fallbac 241 * might need to use the fallback if the algorithm doesn't support
223 * all of the key sizes. In case 242 * all of the key sizes. In case the key was stored in
224 * transformation context, the k 243 * transformation context, the key might need to be re-programmed
225 * into the hardware in this fun 244 * into the hardware in this function. This function shall not
226 * modify the transformation con 245 * modify the transformation context, as this function may be
227 * called in parallel with the s 246 * called in parallel with the same transformation object.
228 * @cia_decrypt: Decrypt a single block. This 247 * @cia_decrypt: Decrypt a single block. This is a reverse counterpart to
229 * @cia_encrypt, and the conditi 248 * @cia_encrypt, and the conditions are exactly the same.
230 * 249 *
231 * All fields are mandatory and must be filled 250 * All fields are mandatory and must be filled.
232 */ 251 */
233 struct cipher_alg { 252 struct cipher_alg {
234 unsigned int cia_min_keysize; 253 unsigned int cia_min_keysize;
235 unsigned int cia_max_keysize; 254 unsigned int cia_max_keysize;
236 int (*cia_setkey)(struct crypto_tfm *t 255 int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
237 unsigned int keylen) 256 unsigned int keylen);
238 void (*cia_encrypt)(struct crypto_tfm 257 void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
239 void (*cia_decrypt)(struct crypto_tfm 258 void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
240 }; 259 };
241 260
242 /** 261 /**
243 * struct compress_alg - compression/decompres 262 * struct compress_alg - compression/decompression algorithm
244 * @coa_compress: Compress a buffer of specifi 263 * @coa_compress: Compress a buffer of specified length, storing the resulting
245 * data in the specified buffer 264 * data in the specified buffer. Return the length of the
246 * compressed data in dlen. 265 * compressed data in dlen.
247 * @coa_decompress: Decompress the source buff 266 * @coa_decompress: Decompress the source buffer, storing the uncompressed
248 * data in the specified buff 267 * data in the specified buffer. The length of the data is
249 * returned in dlen. 268 * returned in dlen.
250 * 269 *
251 * All fields are mandatory. 270 * All fields are mandatory.
252 */ 271 */
253 struct compress_alg { 272 struct compress_alg {
254 int (*coa_compress)(struct crypto_tfm 273 int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
255 unsigned int slen, 274 unsigned int slen, u8 *dst, unsigned int *dlen);
256 int (*coa_decompress)(struct crypto_tf 275 int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
257 unsigned int sle 276 unsigned int slen, u8 *dst, unsigned int *dlen);
258 }; 277 };
259 278
>> 279 #ifdef CONFIG_CRYPTO_STATS
>> 280 /*
>> 281 * struct crypto_istat_aead - statistics for AEAD algorithm
>> 282 * @encrypt_cnt: number of encrypt requests
>> 283 * @encrypt_tlen: total data size handled by encrypt requests
>> 284 * @decrypt_cnt: number of decrypt requests
>> 285 * @decrypt_tlen: total data size handled by decrypt requests
>> 286 * @err_cnt: number of error for AEAD requests
>> 287 */
>> 288 struct crypto_istat_aead {
>> 289 atomic64_t encrypt_cnt;
>> 290 atomic64_t encrypt_tlen;
>> 291 atomic64_t decrypt_cnt;
>> 292 atomic64_t decrypt_tlen;
>> 293 atomic64_t err_cnt;
>> 294 };
>> 295
>> 296 /*
>> 297 * struct crypto_istat_akcipher - statistics for akcipher algorithm
>> 298 * @encrypt_cnt: number of encrypt requests
>> 299 * @encrypt_tlen: total data size handled by encrypt requests
>> 300 * @decrypt_cnt: number of decrypt requests
>> 301 * @decrypt_tlen: total data size handled by decrypt requests
>> 302 * @verify_cnt: number of verify operation
>> 303 * @sign_cnt: number of sign requests
>> 304 * @err_cnt: number of error for akcipher requests
>> 305 */
>> 306 struct crypto_istat_akcipher {
>> 307 atomic64_t encrypt_cnt;
>> 308 atomic64_t encrypt_tlen;
>> 309 atomic64_t decrypt_cnt;
>> 310 atomic64_t decrypt_tlen;
>> 311 atomic64_t verify_cnt;
>> 312 atomic64_t sign_cnt;
>> 313 atomic64_t err_cnt;
>> 314 };
>> 315
>> 316 /*
>> 317 * struct crypto_istat_cipher - statistics for cipher algorithm
>> 318 * @encrypt_cnt: number of encrypt requests
>> 319 * @encrypt_tlen: total data size handled by encrypt requests
>> 320 * @decrypt_cnt: number of decrypt requests
>> 321 * @decrypt_tlen: total data size handled by decrypt requests
>> 322 * @err_cnt: number of error for cipher requests
>> 323 */
>> 324 struct crypto_istat_cipher {
>> 325 atomic64_t encrypt_cnt;
>> 326 atomic64_t encrypt_tlen;
>> 327 atomic64_t decrypt_cnt;
>> 328 atomic64_t decrypt_tlen;
>> 329 atomic64_t err_cnt;
>> 330 };
>> 331
>> 332 /*
>> 333 * struct crypto_istat_compress - statistics for compress algorithm
>> 334 * @compress_cnt: number of compress requests
>> 335 * @compress_tlen: total data size handled by compress requests
>> 336 * @decompress_cnt: number of decompress requests
>> 337 * @decompress_tlen: total data size handled by decompress requests
>> 338 * @err_cnt: number of error for compress requests
>> 339 */
>> 340 struct crypto_istat_compress {
>> 341 atomic64_t compress_cnt;
>> 342 atomic64_t compress_tlen;
>> 343 atomic64_t decompress_cnt;
>> 344 atomic64_t decompress_tlen;
>> 345 atomic64_t err_cnt;
>> 346 };
>> 347
>> 348 /*
>> 349 * struct crypto_istat_hash - statistics for has algorithm
>> 350 * @hash_cnt: number of hash requests
>> 351 * @hash_tlen: total data size hashed
>> 352 * @err_cnt: number of error for hash requests
>> 353 */
>> 354 struct crypto_istat_hash {
>> 355 atomic64_t hash_cnt;
>> 356 atomic64_t hash_tlen;
>> 357 atomic64_t err_cnt;
>> 358 };
>> 359
>> 360 /*
>> 361 * struct crypto_istat_kpp - statistics for KPP algorithm
>> 362 * @setsecret_cnt: number of setsecrey operation
>> 363 * @generate_public_key_cnt: number of generate_public_key operation
>> 364 * @compute_shared_secret_cnt: number of compute_shared_secret operation
>> 365 * @err_cnt: number of error for KPP requests
>> 366 */
>> 367 struct crypto_istat_kpp {
>> 368 atomic64_t setsecret_cnt;
>> 369 atomic64_t generate_public_key_cnt;
>> 370 atomic64_t compute_shared_secret_cnt;
>> 371 atomic64_t err_cnt;
>> 372 };
>> 373
>> 374 /*
>> 375 * struct crypto_istat_rng: statistics for RNG algorithm
>> 376 * @generate_cnt: number of RNG generate requests
>> 377 * @generate_tlen: total data size of generated data by the RNG
>> 378 * @seed_cnt: number of times the RNG was seeded
>> 379 * @err_cnt: number of error for RNG requests
>> 380 */
>> 381 struct crypto_istat_rng {
>> 382 atomic64_t generate_cnt;
>> 383 atomic64_t generate_tlen;
>> 384 atomic64_t seed_cnt;
>> 385 atomic64_t err_cnt;
>> 386 };
>> 387 #endif /* CONFIG_CRYPTO_STATS */
>> 388
260 #define cra_cipher cra_u.cipher 389 #define cra_cipher cra_u.cipher
261 #define cra_compress cra_u.compress 390 #define cra_compress cra_u.compress
262 391
263 /** 392 /**
264 * struct crypto_alg - definition of a cryptog 393 * struct crypto_alg - definition of a cryptograpic cipher algorithm
265 * @cra_flags: Flags describing this transform 394 * @cra_flags: Flags describing this transformation. See include/linux/crypto.h
266 * CRYPTO_ALG_* flags for the flag 395 * CRYPTO_ALG_* flags for the flags which go in here. Those are
267 * used for fine-tuning the descri 396 * used for fine-tuning the description of the transformation
268 * algorithm. 397 * algorithm.
269 * @cra_blocksize: Minimum block size of this 398 * @cra_blocksize: Minimum block size of this transformation. The size in bytes
270 * of the smallest possible un 399 * of the smallest possible unit which can be transformed with
271 * this algorithm. The users m 400 * this algorithm. The users must respect this value.
272 * In case of HASH transformat 401 * In case of HASH transformation, it is possible for a smaller
273 * block than @cra_blocksize t 402 * block than @cra_blocksize to be passed to the crypto API for
274 * transformation, in case of 403 * transformation, in case of any other transformation type, an
275 * error will be returned upon 404 * error will be returned upon any attempt to transform smaller
276 * than @cra_blocksize chunks. 405 * than @cra_blocksize chunks.
277 * @cra_ctxsize: Size of the operational conte 406 * @cra_ctxsize: Size of the operational context of the transformation. This
278 * value informs the kernel cryp 407 * value informs the kernel crypto API about the memory size
279 * needed to be allocated for th 408 * needed to be allocated for the transformation context.
280 * @cra_alignmask: For cipher, skcipher, lskci !! 409 * @cra_alignmask: Alignment mask for the input and output data buffer. The data
281 * 1 less than the alignment, !! 410 * buffer containing the input data for the algorithm must be
282 * implementation requires for !! 411 * aligned to this alignment mask. The data buffer for the
283 * the crypto API is invoked w !! 412 * output data must be aligned to this alignment mask. Note that
284 * to this alignment, the cryp !! 413 * the Crypto API will do the re-alignment in software, but
285 * appropriately aligned tempo !! 414 * only under special conditions and there is a performance hit.
286 * the algorithm needs. (For !! 415 * The re-alignment happens at these occasions for different
287 * the algorithm uses the skci !! 416 * @cra_u types: cipher -- For both input data and output data
288 * misalignment handling carri !! 417 * buffer; ahash -- For output hash destination buf; shash --
289 * preferred that algorithms d !! 418 * For output hash destination buf.
290 * Also, crypto API users may !! 419 * This is needed on hardware which is flawed by design and
291 * to the alignmask of the alg !! 420 * cannot pick data from arbitrary addresses.
292 * avoid the API having to rea <<
293 * not supported for hash algo <<
294 * @cra_priority: Priority of this transformat 421 * @cra_priority: Priority of this transformation implementation. In case
295 * multiple transformations wit 422 * multiple transformations with same @cra_name are available to
296 * the Crypto API, the kernel w 423 * the Crypto API, the kernel will use the one with highest
297 * @cra_priority. 424 * @cra_priority.
298 * @cra_name: Generic name (usable by multiple 425 * @cra_name: Generic name (usable by multiple implementations) of the
299 * transformation algorithm. This i 426 * transformation algorithm. This is the name of the transformation
300 * itself. This field is used by th 427 * itself. This field is used by the kernel when looking up the
301 * providers of particular transfor 428 * providers of particular transformation.
302 * @cra_driver_name: Unique name of the transf 429 * @cra_driver_name: Unique name of the transformation provider. This is the
303 * name of the provider of t 430 * name of the provider of the transformation. This can be any
304 * arbitrary value, but in t 431 * arbitrary value, but in the usual case, this contains the
305 * name of the chip or provi 432 * name of the chip or provider and the name of the
306 * transformation algorithm. 433 * transformation algorithm.
307 * @cra_type: Type of the cryptographic transf 434 * @cra_type: Type of the cryptographic transformation. This is a pointer to
308 * struct crypto_type, which implem 435 * struct crypto_type, which implements callbacks common for all
309 * transformation types. There are 436 * transformation types. There are multiple options, such as
310 * &crypto_skcipher_type, &crypto_a 437 * &crypto_skcipher_type, &crypto_ahash_type, &crypto_rng_type.
311 * This field might be empty. In th 438 * This field might be empty. In that case, there are no common
312 * callbacks. This is the case for: 439 * callbacks. This is the case for: cipher, compress, shash.
313 * @cra_u: Callbacks implementing the transfor 440 * @cra_u: Callbacks implementing the transformation. This is a union of
314 * multiple structures. Depending on t 441 * multiple structures. Depending on the type of transformation selected
315 * by @cra_type and @cra_flags above, 442 * by @cra_type and @cra_flags above, the associated structure must be
316 * filled with callbacks. This field m 443 * filled with callbacks. This field might be empty. This is the case
317 * for ahash, shash. 444 * for ahash, shash.
318 * @cra_init: Initialize the cryptographic tra 445 * @cra_init: Initialize the cryptographic transformation object. This function
319 * is used to initialize the crypto 446 * is used to initialize the cryptographic transformation object.
320 * This function is called only onc 447 * This function is called only once at the instantiation time, right
321 * after the transformation context 448 * after the transformation context was allocated. In case the
322 * cryptographic hardware has some 449 * cryptographic hardware has some special requirements which need to
323 * be handled by software, this fun 450 * be handled by software, this function shall check for the precise
324 * requirement of the transformatio 451 * requirement of the transformation and put any software fallbacks
325 * in place. 452 * in place.
326 * @cra_exit: Deinitialize the cryptographic t 453 * @cra_exit: Deinitialize the cryptographic transformation object. This is a
327 * counterpart to @cra_init, used t 454 * counterpart to @cra_init, used to remove various changes set in
328 * @cra_init. 455 * @cra_init.
329 * @cra_u.cipher: Union member which contains 456 * @cra_u.cipher: Union member which contains a single-block symmetric cipher
330 * definition. See @struct @cip 457 * definition. See @struct @cipher_alg.
331 * @cra_u.compress: Union member which contain 458 * @cra_u.compress: Union member which contains a (de)compression algorithm.
332 * See @struct @compress_alg. 459 * See @struct @compress_alg.
333 * @cra_module: Owner of this transformation i 460 * @cra_module: Owner of this transformation implementation. Set to THIS_MODULE
334 * @cra_list: internally used 461 * @cra_list: internally used
335 * @cra_users: internally used 462 * @cra_users: internally used
336 * @cra_refcnt: internally used 463 * @cra_refcnt: internally used
337 * @cra_destroy: internally used 464 * @cra_destroy: internally used
338 * 465 *
>> 466 * @stats: union of all possible crypto_istat_xxx structures
>> 467 * @stats.aead: statistics for AEAD algorithm
>> 468 * @stats.akcipher: statistics for akcipher algorithm
>> 469 * @stats.cipher: statistics for cipher algorithm
>> 470 * @stats.compress: statistics for compress algorithm
>> 471 * @stats.hash: statistics for hash algorithm
>> 472 * @stats.rng: statistics for rng algorithm
>> 473 * @stats.kpp: statistics for KPP algorithm
>> 474 *
339 * The struct crypto_alg describes a generic C 475 * The struct crypto_alg describes a generic Crypto API algorithm and is common
340 * for all of the transformations. Any variabl 476 * for all of the transformations. Any variable not documented here shall not
341 * be used by a cipher implementation as it is 477 * be used by a cipher implementation as it is internal to the Crypto API.
342 */ 478 */
343 struct crypto_alg { 479 struct crypto_alg {
344 struct list_head cra_list; 480 struct list_head cra_list;
345 struct list_head cra_users; 481 struct list_head cra_users;
346 482
347 u32 cra_flags; 483 u32 cra_flags;
348 unsigned int cra_blocksize; 484 unsigned int cra_blocksize;
349 unsigned int cra_ctxsize; 485 unsigned int cra_ctxsize;
350 unsigned int cra_alignmask; 486 unsigned int cra_alignmask;
351 487
352 int cra_priority; 488 int cra_priority;
353 refcount_t cra_refcnt; 489 refcount_t cra_refcnt;
354 490
355 char cra_name[CRYPTO_MAX_ALG_NAME]; 491 char cra_name[CRYPTO_MAX_ALG_NAME];
356 char cra_driver_name[CRYPTO_MAX_ALG_NA 492 char cra_driver_name[CRYPTO_MAX_ALG_NAME];
357 493
358 const struct crypto_type *cra_type; 494 const struct crypto_type *cra_type;
359 495
360 union { 496 union {
361 struct cipher_alg cipher; 497 struct cipher_alg cipher;
362 struct compress_alg compress; 498 struct compress_alg compress;
363 } cra_u; 499 } cra_u;
364 500
365 int (*cra_init)(struct crypto_tfm *tfm 501 int (*cra_init)(struct crypto_tfm *tfm);
366 void (*cra_exit)(struct crypto_tfm *tf 502 void (*cra_exit)(struct crypto_tfm *tfm);
367 void (*cra_destroy)(struct crypto_alg 503 void (*cra_destroy)(struct crypto_alg *alg);
368 504
369 struct module *cra_module; 505 struct module *cra_module;
>> 506
>> 507 #ifdef CONFIG_CRYPTO_STATS
>> 508 union {
>> 509 struct crypto_istat_aead aead;
>> 510 struct crypto_istat_akcipher akcipher;
>> 511 struct crypto_istat_cipher cipher;
>> 512 struct crypto_istat_compress compress;
>> 513 struct crypto_istat_hash hash;
>> 514 struct crypto_istat_rng rng;
>> 515 struct crypto_istat_kpp kpp;
>> 516 } stats;
>> 517 #endif /* CONFIG_CRYPTO_STATS */
>> 518
370 } CRYPTO_MINALIGN_ATTR; 519 } CRYPTO_MINALIGN_ATTR;
371 520
>> 521 #ifdef CONFIG_CRYPTO_STATS
>> 522 void crypto_stats_init(struct crypto_alg *alg);
>> 523 void crypto_stats_get(struct crypto_alg *alg);
>> 524 void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
>> 525 void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret);
>> 526 void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg);
>> 527 void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg);
>> 528 void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg);
>> 529 void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg);
>> 530 void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg);
>> 531 void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg);
>> 532 void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg);
>> 533 void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg);
>> 534 void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret);
>> 535 void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret);
>> 536 void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret);
>> 537 void crypto_stats_rng_seed(struct crypto_alg *alg, int ret);
>> 538 void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret);
>> 539 void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
>> 540 void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg);
>> 541 #else
>> 542 static inline void crypto_stats_init(struct crypto_alg *alg)
>> 543 {}
>> 544 static inline void crypto_stats_get(struct crypto_alg *alg)
>> 545 {}
>> 546 static inline void crypto_stats_aead_encrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
>> 547 {}
>> 548 static inline void crypto_stats_aead_decrypt(unsigned int cryptlen, struct crypto_alg *alg, int ret)
>> 549 {}
>> 550 static inline void crypto_stats_ahash_update(unsigned int nbytes, int ret, struct crypto_alg *alg)
>> 551 {}
>> 552 static inline void crypto_stats_ahash_final(unsigned int nbytes, int ret, struct crypto_alg *alg)
>> 553 {}
>> 554 static inline void crypto_stats_akcipher_encrypt(unsigned int src_len, int ret, struct crypto_alg *alg)
>> 555 {}
>> 556 static inline void crypto_stats_akcipher_decrypt(unsigned int src_len, int ret, struct crypto_alg *alg)
>> 557 {}
>> 558 static inline void crypto_stats_akcipher_sign(int ret, struct crypto_alg *alg)
>> 559 {}
>> 560 static inline void crypto_stats_akcipher_verify(int ret, struct crypto_alg *alg)
>> 561 {}
>> 562 static inline void crypto_stats_compress(unsigned int slen, int ret, struct crypto_alg *alg)
>> 563 {}
>> 564 static inline void crypto_stats_decompress(unsigned int slen, int ret, struct crypto_alg *alg)
>> 565 {}
>> 566 static inline void crypto_stats_kpp_set_secret(struct crypto_alg *alg, int ret)
>> 567 {}
>> 568 static inline void crypto_stats_kpp_generate_public_key(struct crypto_alg *alg, int ret)
>> 569 {}
>> 570 static inline void crypto_stats_kpp_compute_shared_secret(struct crypto_alg *alg, int ret)
>> 571 {}
>> 572 static inline void crypto_stats_rng_seed(struct crypto_alg *alg, int ret)
>> 573 {}
>> 574 static inline void crypto_stats_rng_generate(struct crypto_alg *alg, unsigned int dlen, int ret)
>> 575 {}
>> 576 static inline void crypto_stats_skcipher_encrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg)
>> 577 {}
>> 578 static inline void crypto_stats_skcipher_decrypt(unsigned int cryptlen, int ret, struct crypto_alg *alg)
>> 579 {}
>> 580 #endif
372 /* 581 /*
373 * A helper struct for waiting for completion 582 * A helper struct for waiting for completion of async crypto ops
374 */ 583 */
375 struct crypto_wait { 584 struct crypto_wait {
376 struct completion completion; 585 struct completion completion;
377 int err; 586 int err;
378 }; 587 };
379 588
380 /* 589 /*
381 * Macro for declaring a crypto op async wait 590 * Macro for declaring a crypto op async wait object on stack
382 */ 591 */
383 #define DECLARE_CRYPTO_WAIT(_wait) \ 592 #define DECLARE_CRYPTO_WAIT(_wait) \
384 struct crypto_wait _wait = { \ 593 struct crypto_wait _wait = { \
385 COMPLETION_INITIALIZER_ONSTACK 594 COMPLETION_INITIALIZER_ONSTACK((_wait).completion), 0 }
386 595
387 /* 596 /*
388 * Async ops completion helper functioons 597 * Async ops completion helper functioons
389 */ 598 */
390 void crypto_req_done(void *req, int err); !! 599 static inline void *crypto_get_completion_data(crypto_completion_data_t *req)
>> 600 {
>> 601 return req->data;
>> 602 }
>> 603
>> 604 void crypto_req_done(struct crypto_async_request *req, int err);
391 605
392 static inline int crypto_wait_req(int err, str 606 static inline int crypto_wait_req(int err, struct crypto_wait *wait)
393 { 607 {
394 switch (err) { 608 switch (err) {
395 case -EINPROGRESS: 609 case -EINPROGRESS:
396 case -EBUSY: 610 case -EBUSY:
397 wait_for_completion(&wait->com 611 wait_for_completion(&wait->completion);
398 reinit_completion(&wait->compl 612 reinit_completion(&wait->completion);
399 err = wait->err; 613 err = wait->err;
400 break; 614 break;
401 } 615 }
402 616
403 return err; 617 return err;
404 } 618 }
405 619
406 static inline void crypto_init_wait(struct cry 620 static inline void crypto_init_wait(struct crypto_wait *wait)
407 { 621 {
408 init_completion(&wait->completion); 622 init_completion(&wait->completion);
409 } 623 }
410 624
411 /* 625 /*
>> 626 * Algorithm registration interface.
>> 627 */
>> 628 int crypto_register_alg(struct crypto_alg *alg);
>> 629 void crypto_unregister_alg(struct crypto_alg *alg);
>> 630 int crypto_register_algs(struct crypto_alg *algs, int count);
>> 631 void crypto_unregister_algs(struct crypto_alg *algs, int count);
>> 632
>> 633 /*
412 * Algorithm query interface. 634 * Algorithm query interface.
413 */ 635 */
414 int crypto_has_alg(const char *name, u32 type, 636 int crypto_has_alg(const char *name, u32 type, u32 mask);
415 637
416 /* 638 /*
417 * Transforms: user-instantiated objects which 639 * Transforms: user-instantiated objects which encapsulate algorithms
418 * and core processing logic. Managed via cry 640 * and core processing logic. Managed via crypto_alloc_*() and
419 * crypto_free_*(), as well as the various hel 641 * crypto_free_*(), as well as the various helpers below.
420 */ 642 */
421 643
422 struct crypto_tfm { 644 struct crypto_tfm {
423 refcount_t refcnt; <<
424 645
425 u32 crt_flags; 646 u32 crt_flags;
426 647
427 int node; 648 int node;
428 649
429 void (*exit)(struct crypto_tfm *tfm); 650 void (*exit)(struct crypto_tfm *tfm);
430 651
431 struct crypto_alg *__crt_alg; 652 struct crypto_alg *__crt_alg;
432 653
433 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR 654 void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
434 }; 655 };
435 656
436 struct crypto_comp { 657 struct crypto_comp {
437 struct crypto_tfm base; 658 struct crypto_tfm base;
438 }; 659 };
439 660
440 /* 661 /*
441 * Transform user interface. 662 * Transform user interface.
442 */ 663 */
443 664
444 struct crypto_tfm *crypto_alloc_base(const cha 665 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
445 void crypto_destroy_tfm(void *mem, struct cryp 666 void crypto_destroy_tfm(void *mem, struct crypto_tfm *tfm);
446 667
447 static inline void crypto_free_tfm(struct cryp 668 static inline void crypto_free_tfm(struct crypto_tfm *tfm)
448 { 669 {
449 return crypto_destroy_tfm(tfm, tfm); 670 return crypto_destroy_tfm(tfm, tfm);
450 } 671 }
451 672
>> 673 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
>> 674
452 /* 675 /*
453 * Transform helpers which query the underlyin 676 * Transform helpers which query the underlying algorithm.
454 */ 677 */
455 static inline const char *crypto_tfm_alg_name( 678 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
456 { 679 {
457 return tfm->__crt_alg->cra_name; 680 return tfm->__crt_alg->cra_name;
458 } 681 }
459 682
460 static inline const char *crypto_tfm_alg_drive 683 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
461 { 684 {
462 return tfm->__crt_alg->cra_driver_name 685 return tfm->__crt_alg->cra_driver_name;
>> 686 }
>> 687
>> 688 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
>> 689 {
>> 690 return tfm->__crt_alg->cra_priority;
>> 691 }
>> 692
>> 693 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
>> 694 {
>> 695 return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
463 } 696 }
464 697
465 static inline unsigned int crypto_tfm_alg_bloc 698 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
466 { 699 {
467 return tfm->__crt_alg->cra_blocksize; 700 return tfm->__crt_alg->cra_blocksize;
468 } 701 }
469 702
470 static inline unsigned int crypto_tfm_alg_alig 703 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
471 { 704 {
472 return tfm->__crt_alg->cra_alignmask; 705 return tfm->__crt_alg->cra_alignmask;
473 } 706 }
474 707
475 static inline u32 crypto_tfm_get_flags(struct 708 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
476 { 709 {
477 return tfm->crt_flags; 710 return tfm->crt_flags;
478 } 711 }
479 712
480 static inline void crypto_tfm_set_flags(struct 713 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
481 { 714 {
482 tfm->crt_flags |= flags; 715 tfm->crt_flags |= flags;
483 } 716 }
484 717
485 static inline void crypto_tfm_clear_flags(stru 718 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
486 { 719 {
487 tfm->crt_flags &= ~flags; 720 tfm->crt_flags &= ~flags;
488 } 721 }
489 722
490 static inline unsigned int crypto_tfm_ctx_alig 723 static inline unsigned int crypto_tfm_ctx_alignment(void)
491 { 724 {
492 struct crypto_tfm *tfm; 725 struct crypto_tfm *tfm;
493 return __alignof__(tfm->__crt_ctx); 726 return __alignof__(tfm->__crt_ctx);
494 } 727 }
495 728
496 static inline struct crypto_comp *__crypto_com 729 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
497 { 730 {
498 return (struct crypto_comp *)tfm; 731 return (struct crypto_comp *)tfm;
499 } 732 }
500 733
501 static inline struct crypto_comp *crypto_alloc 734 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
502 735 u32 type, u32 mask)
503 { 736 {
504 type &= ~CRYPTO_ALG_TYPE_MASK; 737 type &= ~CRYPTO_ALG_TYPE_MASK;
505 type |= CRYPTO_ALG_TYPE_COMPRESS; 738 type |= CRYPTO_ALG_TYPE_COMPRESS;
506 mask |= CRYPTO_ALG_TYPE_MASK; 739 mask |= CRYPTO_ALG_TYPE_MASK;
507 740
508 return __crypto_comp_cast(crypto_alloc 741 return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
509 } 742 }
510 743
511 static inline struct crypto_tfm *crypto_comp_t 744 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
512 { 745 {
513 return &tfm->base; 746 return &tfm->base;
514 } 747 }
515 748
516 static inline void crypto_free_comp(struct cry 749 static inline void crypto_free_comp(struct crypto_comp *tfm)
517 { 750 {
518 crypto_free_tfm(crypto_comp_tfm(tfm)); 751 crypto_free_tfm(crypto_comp_tfm(tfm));
519 } 752 }
520 753
521 static inline int crypto_has_comp(const char * 754 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
522 { 755 {
523 type &= ~CRYPTO_ALG_TYPE_MASK; 756 type &= ~CRYPTO_ALG_TYPE_MASK;
524 type |= CRYPTO_ALG_TYPE_COMPRESS; 757 type |= CRYPTO_ALG_TYPE_COMPRESS;
525 mask |= CRYPTO_ALG_TYPE_MASK; 758 mask |= CRYPTO_ALG_TYPE_MASK;
526 759
527 return crypto_has_alg(alg_name, type, 760 return crypto_has_alg(alg_name, type, mask);
528 } 761 }
529 762
530 static inline const char *crypto_comp_name(str 763 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
531 { 764 {
532 return crypto_tfm_alg_name(crypto_comp 765 return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
533 } 766 }
534 767
535 int crypto_comp_compress(struct crypto_comp *t 768 int crypto_comp_compress(struct crypto_comp *tfm,
536 const u8 *src, unsign 769 const u8 *src, unsigned int slen,
537 u8 *dst, unsigned int 770 u8 *dst, unsigned int *dlen);
538 771
539 int crypto_comp_decompress(struct crypto_comp 772 int crypto_comp_decompress(struct crypto_comp *tfm,
540 const u8 *src, unsi 773 const u8 *src, unsigned int slen,
541 u8 *dst, unsigned i 774 u8 *dst, unsigned int *dlen);
542 775
543 #endif /* _LINUX_CRYPTO_H */ 776 #endif /* _LINUX_CRYPTO_H */
544 777
545 778
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