[PATCH 03/21] x86: crypto: convert exported crypto symbol into pluggable interface for CONFIG_CRYPTO_TWOFISH_X86_64_3WAY crypto

[Jay Wang <wanjay@amazon.com>]

Apply Crypto API wrappers to the exported crypto symbol in
CONFIG_CRYPTO_TWOFISH_X86_64_3WAY-related crypto to convert them into pluggable
interface.

Signed-off-by: Jay Wang <wanjay@amazon.com>
---
 arch/x86/crypto/Makefile              |  2 +-
 arch/x86/crypto/fips140/fips140-api.c | 13 +++++++++++++
 arch/x86/crypto/twofish.h             | 13 +++++++++----
 arch/x86/crypto/twofish_glue_3way.c   |  4 ++--
 4 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/arch/x86/crypto/Makefile b/arch/x86/crypto/Makefile
index ed8958bffbc9..f224f5206bbb 100644
--- a/arch/x86/crypto/Makefile
+++ b/arch/x86/crypto/Makefile
@@ -6,7 +6,7 @@ obj-$(CONFIG_CRYPTO_TWOFISH_586) += twofish-i586.o
 twofish-i586-y := twofish-i586-asm_32.o twofish_glue.o
 crypto-objs-$(CONFIG_CRYPTO_TWOFISH_X86_64) += twofish-x86_64.o
 twofish-x86_64-y := twofish-x86_64-asm_64.o twofish_glue.o
-obj-$(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY) += twofish-x86_64-3way.o
+crypto-objs-$(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY) += twofish-x86_64-3way.o
 twofish-x86_64-3way-y := twofish-x86_64-asm_64-3way.o twofish_glue_3way.o
 obj-$(CONFIG_CRYPTO_TWOFISH_AVX_X86_64) += twofish-avx-x86_64.o
 twofish-avx-x86_64-y := twofish-avx-x86_64-asm_64.o twofish_avx_glue.o
diff --git a/arch/x86/crypto/fips140/fips140-api.c b/arch/x86/crypto/fips140/fips140-api.c
index bb8ca949caef..a1a207fa34cd 100644
--- a/arch/x86/crypto/fips140/fips140-api.c
+++ b/arch/x86/crypto/fips140/fips140-api.c
@@ -8,4 +8,17 @@
 DEFINE_CRYPTO_API_STUB(twofish_enc_blk);
 DEFINE_CRYPTO_API_STUB(twofish_dec_blk);
 
+#endif
+
+/*
+ * arch/x86/crypto/twofish_glue_3way.c
+ */
+#if IS_BUILTIN(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY)
+
+#include <arch/x86/crypto/twofish.h>
+
+DEFINE_CRYPTO_API_STUB(__twofish_enc_blk_3way);
+DEFINE_CRYPTO_API_STUB(twofish_dec_blk_3way);
+DEFINE_CRYPTO_API_STUB(twofish_dec_blk_cbc_3way);
+
 #endif
\ No newline at end of file
diff --git a/arch/x86/crypto/twofish.h b/arch/x86/crypto/twofish.h
index c44d2f53ee11..3ee4caa05428 100644
--- a/arch/x86/crypto/twofish.h
+++ b/arch/x86/crypto/twofish.h
@@ -16,11 +16,16 @@ DECLARE_CRYPTO_API(CONFIG_CRYPTO_TWOFISH_X86_64, twofish_dec_blk, asmlinkage voi
 	(ctx, dst, src));
 
 /* 3-way parallel cipher functions */
-asmlinkage void __twofish_enc_blk_3way(const void *ctx, u8 *dst, const u8 *src,
-				       bool xor);
-asmlinkage void twofish_dec_blk_3way(const void *ctx, u8 *dst, const u8 *src);
+DECLARE_CRYPTO_API(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY, __twofish_enc_blk_3way, asmlinkage void,
+	(const void *ctx, u8 *dst, const u8 *src, bool xor),
+	(ctx, dst, src, xor));
+DECLARE_CRYPTO_API(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY, twofish_dec_blk_3way, asmlinkage void,
+	(const void *ctx, u8 *dst, const u8 *src),
+	(ctx, dst, src));
 
 /* helpers from twofish_x86_64-3way module */
-extern void twofish_dec_blk_cbc_3way(const void *ctx, u8 *dst, const u8 *src);
+DECLARE_CRYPTO_API(CONFIG_CRYPTO_TWOFISH_X86_64_3WAY, twofish_dec_blk_cbc_3way, void,
+	(const void *ctx, u8 *dst, const u8 *src),
+	(ctx, dst, src));
 
 #endif /* ASM_X86_TWOFISH_H */
diff --git a/arch/x86/crypto/twofish_glue_3way.c b/arch/x86/crypto/twofish_glue_3way.c
index 8ad77725bf60..996753732402 100644
--- a/arch/x86/crypto/twofish_glue_3way.c
+++ b/arch/x86/crypto/twofish_glue_3way.c
@@ -161,8 +161,8 @@ static void __exit twofish_3way_fini(void)
 	crypto_unregister_skciphers(tf_skciphers, ARRAY_SIZE(tf_skciphers));
 }
 
-module_init(twofish_3way_init);
-module_exit(twofish_3way_fini);
+crypto_module_init(twofish_3way_init);
+crypto_module_exit(twofish_3way_fini);
 
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Twofish Cipher Algorithm, 3-way parallel asm optimized");
-- 
2.47.3