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69 lines
2.2 KiB
69 lines
2.2 KiB
/* SPDX-License-Identifier: GPL-2.0 */ |
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/* |
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* Shared crypto simd helpers |
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*/ |
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#ifndef _CRYPTO_INTERNAL_SIMD_H |
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#define _CRYPTO_INTERNAL_SIMD_H |
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#include <linux/percpu.h> |
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#include <linux/types.h> |
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/* skcipher support */ |
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struct simd_skcipher_alg; |
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struct skcipher_alg; |
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struct simd_skcipher_alg *simd_skcipher_create_compat(const char *algname, |
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const char *drvname, |
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const char *basename); |
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struct simd_skcipher_alg *simd_skcipher_create(const char *algname, |
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const char *basename); |
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void simd_skcipher_free(struct simd_skcipher_alg *alg); |
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int simd_register_skciphers_compat(struct skcipher_alg *algs, int count, |
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struct simd_skcipher_alg **simd_algs); |
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void simd_unregister_skciphers(struct skcipher_alg *algs, int count, |
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struct simd_skcipher_alg **simd_algs); |
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/* AEAD support */ |
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struct simd_aead_alg; |
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struct aead_alg; |
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struct simd_aead_alg *simd_aead_create_compat(const char *algname, |
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const char *drvname, |
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const char *basename); |
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struct simd_aead_alg *simd_aead_create(const char *algname, |
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const char *basename); |
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void simd_aead_free(struct simd_aead_alg *alg); |
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int simd_register_aeads_compat(struct aead_alg *algs, int count, |
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struct simd_aead_alg **simd_algs); |
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void simd_unregister_aeads(struct aead_alg *algs, int count, |
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struct simd_aead_alg **simd_algs); |
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/* |
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* crypto_simd_usable() - is it allowed at this time to use SIMD instructions or |
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* access the SIMD register file? |
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* |
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* This delegates to may_use_simd(), except that this also returns false if SIMD |
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* in crypto code has been temporarily disabled on this CPU by the crypto |
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* self-tests, in order to test the no-SIMD fallback code. This override is |
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* currently limited to configurations where the extra self-tests are enabled, |
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* because it might be a bit too invasive to be part of the regular self-tests. |
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* |
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* This is a macro so that <asm/simd.h>, which some architectures don't have, |
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* doesn't have to be included directly here. |
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*/ |
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#ifdef CONFIG_CRYPTO_MANAGER_EXTRA_TESTS |
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DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test); |
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#define crypto_simd_usable() \ |
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(may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test)) |
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#else |
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#define crypto_simd_usable() may_use_simd() |
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#endif |
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#endif /* _CRYPTO_INTERNAL_SIMD_H */
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