| 1 |
|
| 2 | |
| 3 | * Shared crypto simd helpers
|
| 4 |
|
| 5 |
|
| 6 | #ifndef _CRYPTO_INTERNAL_SIMD_H
|
| 7 | #define _CRYPTO_INTERNAL_SIMD_H
|
| 8 |
|
| 9 | #include <asm/simd.h>
|
| 10 | #include <linux/percpu.h>
|
| 11 | #include <linux/types.h>
|
| 12 |
|
| 13 | struct simd_aead_alg;
|
| 14 | struct aead_alg;
|
| 15 |
|
| 16 | int simd_register_aeads_compat(struct aead_alg *algs, int count,
|
| 17 | struct simd_aead_alg **simd_algs);
|
| 18 |
|
| 19 | void simd_unregister_aeads(struct aead_alg *algs, int count,
|
| 20 | struct simd_aead_alg **simd_algs);
|
| 21 |
|
| 22 | |
| 23 | * crypto_simd_usable() - is it allowed at this time to use SIMD instructions or
|
| 24 | * access the SIMD register file?
|
| 25 | *
|
| 26 | * This delegates to may_use_simd(), except that this also returns false if SIMD
|
| 27 | * in crypto code has been temporarily disabled on this CPU by the crypto
|
| 28 | * self-tests, in order to test the no-SIMD fallback code. This override is
|
| 29 | * currently limited to configurations where the "full" self-tests are enabled,
|
| 30 | * because it might be a bit too invasive to be part of the "fast" self-tests.
|
| 31 |
|
| 32 | #ifdef CONFIG_CRYPTO_SELFTESTS_FULL
|
| 33 | DECLARE_PER_CPU(bool, crypto_simd_disabled_for_test);
|
| 34 | #define crypto_simd_usable() \
|
| 35 | (may_use_simd() && !this_cpu_read(crypto_simd_disabled_for_test))
|
| 36 | #else
|
| 37 | #define crypto_simd_usable() may_use_simd()
|
| 38 | #endif
|
| 39 |
|
| 40 | #endif
|