1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Shared crypto simd helpers
 4 */
 5
 6#ifndef _CRYPTO_INTERNAL_SIMD_H
 7#define _CRYPTO_INTERNAL_SIMD_H
 8
 9#include <linux/percpu.h>
10#include <linux/types.h>
11
12/* skcipher support */
13
14struct simd_skcipher_alg;
15struct skcipher_alg;
16
17struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname,
 
18						      const char *drvname,
19						      const char *basename);
20struct simd_skcipher_alg *simd_skcipher_create(const char *algname,
21					       const char *basename);
22void simd_skcipher_free(struct simd_skcipher_alg *alg);
23
24int simd_register_skciphers_compat(struct skcipher_alg *algs, int count,
25				   struct simd_skcipher_alg **simd_algs);
26
27void simd_unregister_skciphers(struct skcipher_alg *algs, int count,
28			       struct simd_skcipher_alg **simd_algs);
29
30/* AEAD support */
31
32struct simd_aead_alg;
33struct aead_alg;
34
35struct simd_aead_alg *simd_aead_create_compat(const char *algname,
36					      const char *drvname,
37					      const char *basename);
38struct simd_aead_alg *simd_aead_create(const char *algname,
39				       const char *basename);
40void simd_aead_free(struct simd_aead_alg *alg);
41
42int simd_register_aeads_compat(struct aead_alg *algs, int count,
43			       struct simd_aead_alg **simd_algs);
44
45void simd_unregister_aeads(struct aead_alg *algs, int count,
46			   struct simd_aead_alg **simd_algs);
47
48/*
49 * crypto_simd_usable() - is it allowed at this time to use SIMD instructions or
50 *			  access the SIMD register file?
51 *
52 * This delegates to may_use_simd(), except that this also returns false if SIMD
53 * in crypto code has been temporarily disabled on this CPU by the crypto
54 * self-tests, in order to test the no-SIMD fallback code.  This override is
55 * currently limited to configurations where the extra self-tests are enabled,
56 * because it might be a bit too invasive to be part of the regular self-tests.
57 *
58 * This is a macro so that <asm/simd.h>, which some architectures don't have,
59 * doesn't have to be included directly here.
60 */
61#ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS
62DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test);
63#define crypto_simd_usable() \
64	(may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test))
65#else
66#define crypto_simd_usable() may_use_simd()
67#endif
68
69#endif /* _CRYPTO_INTERNAL_SIMD_H */

 1/* SPDX-License-Identifier: GPL-2.0 */
 2/*
 3 * Shared crypto simd helpers
 4 */
 5
 6#ifndef _CRYPTO_INTERNAL_SIMD_H
 7#define _CRYPTO_INTERNAL_SIMD_H
 8
 9#include <linux/percpu.h>
10#include <linux/types.h>
11
12/* skcipher support */
13
14struct simd_skcipher_alg;
15struct skcipher_alg;
16
17struct simd_skcipher_alg *simd_skcipher_create_compat(struct skcipher_alg *ialg,
18						      const char *algname,
19						      const char *drvname,
20						      const char *basename);
 
 
21void simd_skcipher_free(struct simd_skcipher_alg *alg);
22
23int simd_register_skciphers_compat(struct skcipher_alg *algs, int count,
24				   struct simd_skcipher_alg **simd_algs);
25
26void simd_unregister_skciphers(struct skcipher_alg *algs, int count,
27			       struct simd_skcipher_alg **simd_algs);
28
29/* AEAD support */
30
31struct simd_aead_alg;
32struct aead_alg;
 
 
 
 
 
 
 
33
34int simd_register_aeads_compat(struct aead_alg *algs, int count,
35			       struct simd_aead_alg **simd_algs);
36
37void simd_unregister_aeads(struct aead_alg *algs, int count,
38			   struct simd_aead_alg **simd_algs);
39
40/*
41 * crypto_simd_usable() - is it allowed at this time to use SIMD instructions or
42 *			  access the SIMD register file?
43 *
44 * This delegates to may_use_simd(), except that this also returns false if SIMD
45 * in crypto code has been temporarily disabled on this CPU by the crypto
46 * self-tests, in order to test the no-SIMD fallback code.  This override is
47 * currently limited to configurations where the extra self-tests are enabled,
48 * because it might be a bit too invasive to be part of the regular self-tests.
49 *
50 * This is a macro so that <asm/simd.h>, which some architectures don't have,
51 * doesn't have to be included directly here.
52 */
53#ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS
54DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test);
55#define crypto_simd_usable() \
56	(may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test))
57#else
58#define crypto_simd_usable() may_use_simd()
59#endif
60
61#endif /* _CRYPTO_INTERNAL_SIMD_H */