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