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13cecc526d
Consolidate the ChaCha code into a single module (excluding chacha-block-generic.c which remains always built-in for random.c), similar to various other algorithms: - Each arch now provides a header file lib/crypto/$(SRCARCH)/chacha.h, replacing lib/crypto/$(SRCARCH)/chacha*.c. The header defines chacha_crypt_arch() and hchacha_block_arch(). It is included by lib/crypto/chacha.c, and thus the code gets built into the single libchacha module, with improved inlining in some cases. - Whether arch-optimized ChaCha is buildable is now controlled centrally by lib/crypto/Kconfig instead of by lib/crypto/$(SRCARCH)/Kconfig. The conditions for enabling it remain the same as before, and it remains enabled by default. - Any additional arch-specific translation units for the optimized ChaCha code, such as assembly files, are now compiled by lib/crypto/Makefile instead of lib/crypto/$(SRCARCH)/Makefile. This removes the last use for the Makefile and Kconfig files in the arm64, mips, powerpc, riscv, and s390 subdirectories of lib/crypto/. So also remove those files and the references to them. Reviewed-by: Ard Biesheuvel <ardb@kernel.org> Link: https://lore.kernel.org/r/20250827151131.27733-7-ebiggers@kernel.org Signed-off-by: Eric Biggers <ebiggers@kernel.org>
14 lines
439 B
C
14 lines
439 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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/*
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* ChaCha and HChaCha functions (MIPS optimized)
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*
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* Copyright (C) 2019 Linaro, Ltd. <ard.biesheuvel@linaro.org>
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*/
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#include <linux/kernel.h>
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asmlinkage void chacha_crypt_arch(struct chacha_state *state,
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u8 *dst, const u8 *src,
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unsigned int bytes, int nrounds);
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asmlinkage void hchacha_block_arch(const struct chacha_state *state,
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u32 out[HCHACHA_OUT_WORDS], int nrounds);
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