debug lk

hc

2024-02-20 e636c8d336489bf3eed5878299e6cc045bbad077

 kernel/include/crypto/internal/simd.h
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@@ -6,6 +6,11 @@
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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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+
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+/* skcipher support */
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+
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 struct simd_skcipher_alg;
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 struct skcipher_alg;
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@@ -22,4 +27,43 @@
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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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+
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+struct simd_aead_alg;
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+struct aead_alg;
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+
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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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+
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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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+
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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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+/*
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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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+
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 #endif /* _CRYPTO_INTERNAL_SIMD_H */