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Date: Mon, 6 May 2019 16:19:47 -0300
From: Joao Moreira <jmoreira@...e.de>
To: kernel-hardening@...ts.openwall.com
Cc: linux-kernel@...r.kernel.org, x86@...nel.org,
herbert@...dor.apana.org.au, davem@...emloft.net,
tglx@...utronix.de, mingo@...hat.com, hpa@...or.com,
gregkh@...uxfoundation.org, keescook@...omium.org
Subject: [RFC PATCH v2 1/4] Fix serpent crypto functions prototype casts
Add macros that generate glue functions for serpent crypto functions.
Remove GLUE_FUNC_CAST macros from function pointer assignement and use
the helper instead, making the prototypes compliant.
Signed-off-by: Joao Moreira <jmoreira@...e.de>
---
arch/x86/crypto/serpent_avx2_glue.c | 68 ++++++++++++++----------------
arch/x86/crypto/serpent_avx_glue.c | 63 ++++++++++-----------------
arch/x86/crypto/serpent_sse2_glue.c | 24 +++++++----
arch/x86/include/asm/crypto/serpent-avx.h | 39 +++++++++++------
arch/x86/include/asm/crypto/serpent-sse2.h | 10 +++++
5 files changed, 105 insertions(+), 99 deletions(-)
diff --git a/arch/x86/crypto/serpent_avx2_glue.c b/arch/x86/crypto/serpent_avx2_glue.c
index 03347b16ac9d..d2e7cf23c74b 100644
--- a/arch/x86/crypto/serpent_avx2_glue.c
+++ b/arch/x86/crypto/serpent_avx2_glue.c
@@ -24,18 +24,15 @@
#define SERPENT_AVX2_PARALLEL_BLOCKS 16
/* 16-way AVX2 parallel cipher functions */
-asmlinkage void serpent_ecb_enc_16way(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void serpent_ecb_dec_16way(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void serpent_cbc_dec_16way(void *ctx, u128 *dst, const u128 *src);
-
-asmlinkage void serpent_ctr_16way(void *ctx, u128 *dst, const u128 *src,
- le128 *iv);
-asmlinkage void serpent_xts_enc_16way(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-asmlinkage void serpent_xts_dec_16way(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
+SERPENT_GLUE(serpent_ecb_enc_16way);
+SERPENT_GLUE(serpent_ecb_dec_16way);
+SERPENT_GLUE_CBC(serpent_cbc_dec_16way, serpent_cbc_dec_16way_glue);
+SERPENT_GLUE_CTR(serpent_ctr_16way);
+SERPENT_GLUE_XTS(serpent_xts_enc_16way);
+SERPENT_GLUE_XTS(serpent_xts_dec_16way);
+SERPENT_GLUE(__serpent_encrypt);
+SERPENT_GLUE(__serpent_decrypt);
+SERPENT_GLUE_CBC(__serpent_decrypt, __serpent_decrypt_cbc_glue);
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
@@ -49,13 +46,13 @@ static const struct common_glue_ctx serpent_enc = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_16way) }
+ .fn_u = { .ecb = serpent_ecb_enc_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) }
+ .fn_u = { .ecb = serpent_ecb_enc_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) }
+ .fn_u = { .ecb = __serpent_encrypt_glue }
} }
};
@@ -65,13 +62,13 @@ static const struct common_glue_ctx serpent_ctr = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_16way) }
+ .fn_u = { .ctr = serpent_ctr_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) }
+ .fn_u = { .ctr = serpent_ctr_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) }
+ .fn_u = { .ctr = __serpent_crypt_ctr }
} }
};
@@ -81,13 +78,13 @@ static const struct common_glue_ctx serpent_enc_xts = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_16way) }
+ .fn_u = { .xts = serpent_xts_enc_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) }
+ .fn_u = { .xts = serpent_xts_enc_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) }
+ .fn_u = { .xts = serpent_xts_enc }
} }
};
@@ -97,13 +94,13 @@ static const struct common_glue_ctx serpent_dec = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_16way) }
+ .fn_u = { .ecb = serpent_ecb_dec_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) }
+ .fn_u = { .ecb = serpent_ecb_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .ecb = __serpent_decrypt_glue }
} }
};
@@ -113,13 +110,13 @@ static const struct common_glue_ctx serpent_dec_cbc = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_16way) }
+ .fn_u = { .cbc = serpent_cbc_dec_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) }
+ .fn_u = { .cbc = serpent_cbc_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .cbc = __serpent_decrypt_cbc_glue }
} }
};
@@ -129,13 +126,13 @@ static const struct common_glue_ctx serpent_dec_xts = {
.funcs = { {
.num_blocks = 16,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_16way) }
+ .fn_u = { .xts = serpent_xts_dec_16way_glue }
}, {
.num_blocks = 8,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) }
+ .fn_u = { .xts = serpent_xts_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) }
+ .fn_u = { .xts = serpent_xts_dec }
} }
};
@@ -151,8 +148,7 @@ static int ecb_decrypt(struct skcipher_request *req)
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt),
- req);
+ return glue_cbc_encrypt_req_128bit(__serpent_encrypt_glue, req);
}
static int cbc_decrypt(struct skcipher_request *req)
@@ -171,8 +167,8 @@ static int xts_encrypt(struct skcipher_request *req)
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_enc_xts, req,
- XTS_TWEAK_CAST(__serpent_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ __serpent_encrypt_glue, &ctx->tweak_ctx,
+ &ctx->crypt_ctx);
}
static int xts_decrypt(struct skcipher_request *req)
@@ -181,8 +177,8 @@ static int xts_decrypt(struct skcipher_request *req)
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_dec_xts, req,
- XTS_TWEAK_CAST(__serpent_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ __serpent_encrypt_glue, &ctx->tweak_ctx,
+ &ctx->crypt_ctx);
}
static struct skcipher_alg serpent_algs[] = {
diff --git a/arch/x86/crypto/serpent_avx_glue.c b/arch/x86/crypto/serpent_avx_glue.c
index 458567ecf76c..45584cf7bb81 100644
--- a/arch/x86/crypto/serpent_avx_glue.c
+++ b/arch/x86/crypto/serpent_avx_glue.c
@@ -34,29 +34,15 @@
#include <asm/crypto/glue_helper.h>
#include <asm/crypto/serpent-avx.h>
-/* 8-way parallel cipher functions */
-asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx);
+SERPENT_GLUE(__serpent_encrypt);
+SERPENT_GLUE(__serpent_decrypt);
+SERPENT_GLUE_CBC(__serpent_decrypt, __serpent_decrypt_cbc_glue);
-asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
+EXPORT_SYMBOL_GPL(serpent_ecb_enc_8way_avx);
EXPORT_SYMBOL_GPL(serpent_ecb_dec_8way_avx);
-
-asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
EXPORT_SYMBOL_GPL(serpent_cbc_dec_8way_avx);
-
-asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
EXPORT_SYMBOL_GPL(serpent_ctr_8way_avx);
-
-asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
EXPORT_SYMBOL_GPL(serpent_xts_enc_8way_avx);
-
-asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
EXPORT_SYMBOL_GPL(serpent_xts_dec_8way_avx);
void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src, le128 *iv)
@@ -73,15 +59,13 @@ EXPORT_SYMBOL_GPL(__serpent_crypt_ctr);
void serpent_xts_enc(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv,
- GLUE_FUNC_CAST(__serpent_encrypt));
+ glue_xts_crypt_128bit_one(ctx, dst, src, iv, __serpent_encrypt_glue);
}
EXPORT_SYMBOL_GPL(serpent_xts_enc);
void serpent_xts_dec(void *ctx, u128 *dst, const u128 *src, le128 *iv)
{
- glue_xts_crypt_128bit_one(ctx, dst, src, iv,
- GLUE_FUNC_CAST(__serpent_decrypt));
+ glue_xts_crypt_128bit_one(ctx, dst, src, iv, __serpent_decrypt_glue);
}
EXPORT_SYMBOL_GPL(serpent_xts_dec);
@@ -117,10 +101,10 @@ static const struct common_glue_ctx serpent_enc = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_enc_8way_avx) }
+ .fn_u = { .ecb = serpent_ecb_enc_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) }
+ .fn_u = { .ecb = __serpent_encrypt_glue }
} }
};
@@ -130,10 +114,10 @@ static const struct common_glue_ctx serpent_ctr = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_ctr_8way_avx) }
+ .fn_u = { .ctr = serpent_ctr_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(__serpent_crypt_ctr) }
+ .fn_u = { .ctr = __serpent_crypt_ctr }
} }
};
@@ -143,10 +127,10 @@ static const struct common_glue_ctx serpent_enc_xts = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc_8way_avx) }
+ .fn_u = { .xts = serpent_xts_enc_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_enc) }
+ .fn_u = { .xts = serpent_xts_enc }
} }
};
@@ -156,10 +140,10 @@ static const struct common_glue_ctx serpent_dec = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_ecb_dec_8way_avx) }
+ .fn_u = { .ecb = serpent_ecb_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .ecb = __serpent_decrypt_glue }
} }
};
@@ -169,10 +153,10 @@ static const struct common_glue_ctx serpent_dec_cbc = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_cbc_dec_8way_avx) }
+ .fn_u = { .cbc = serpent_cbc_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .cbc = __serpent_decrypt_cbc_glue }
} }
};
@@ -182,10 +166,10 @@ static const struct common_glue_ctx serpent_dec_xts = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec_8way_avx) }
+ .fn_u = { .xts = serpent_xts_dec_8way_avx_glue }
}, {
.num_blocks = 1,
- .fn_u = { .xts = GLUE_XTS_FUNC_CAST(serpent_xts_dec) }
+ .fn_u = { .xts = serpent_xts_dec }
} }
};
@@ -201,8 +185,7 @@ static int ecb_decrypt(struct skcipher_request *req)
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt),
- req);
+ return glue_cbc_encrypt_req_128bit(__serpent_encrypt_glue, req);
}
static int cbc_decrypt(struct skcipher_request *req)
@@ -221,8 +204,8 @@ static int xts_encrypt(struct skcipher_request *req)
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_enc_xts, req,
- XTS_TWEAK_CAST(__serpent_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ __serpent_encrypt_glue, &ctx->tweak_ctx,
+ &ctx->crypt_ctx);
}
static int xts_decrypt(struct skcipher_request *req)
@@ -231,8 +214,8 @@ static int xts_decrypt(struct skcipher_request *req)
struct serpent_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
return glue_xts_req_128bit(&serpent_dec_xts, req,
- XTS_TWEAK_CAST(__serpent_encrypt),
- &ctx->tweak_ctx, &ctx->crypt_ctx);
+ __serpent_encrypt_glue, &ctx->tweak_ctx,
+ &ctx->crypt_ctx);
}
static struct skcipher_alg serpent_algs[] = {
diff --git a/arch/x86/crypto/serpent_sse2_glue.c b/arch/x86/crypto/serpent_sse2_glue.c
index 3dafe137596a..0ddaa0671a7e 100644
--- a/arch/x86/crypto/serpent_sse2_glue.c
+++ b/arch/x86/crypto/serpent_sse2_glue.c
@@ -40,6 +40,12 @@
#include <asm/crypto/serpent-sse2.h>
#include <asm/crypto/glue_helper.h>
+SERPENT_GLUE(__serpent_encrypt);
+SERPENT_GLUE(__serpent_decrypt);
+SERPENT_GLUE_CBC(__serpent_decrypt, __serpent_decrypt_cbc_glue);
+SERPENT_GLUE(serpent_enc_blk_xway);
+SERPENT_GLUE(serpent_dec_blk_xway);
+
static int serpent_setkey_skcipher(struct crypto_skcipher *tfm,
const u8 *key, unsigned int keylen)
{
@@ -94,10 +100,10 @@ static const struct common_glue_ctx serpent_enc = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_enc_blk_xway) }
+ .fn_u = { .ecb = serpent_enc_blk_xway_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_encrypt) }
+ .fn_u = { .ecb = __serpent_encrypt_glue }
} }
};
@@ -107,10 +113,10 @@ static const struct common_glue_ctx serpent_ctr = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_crypt_ctr_xway) }
+ .fn_u = { .ctr = serpent_crypt_ctr_xway }
}, {
.num_blocks = 1,
- .fn_u = { .ctr = GLUE_CTR_FUNC_CAST(serpent_crypt_ctr) }
+ .fn_u = { .ctr = serpent_crypt_ctr }
} }
};
@@ -120,10 +126,10 @@ static const struct common_glue_ctx serpent_dec = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .ecb = GLUE_FUNC_CAST(serpent_dec_blk_xway) }
+ .fn_u = { .ecb = serpent_dec_blk_xway_glue }
}, {
.num_blocks = 1,
- .fn_u = { .ecb = GLUE_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .ecb = __serpent_decrypt_glue }
} }
};
@@ -133,10 +139,10 @@ static const struct common_glue_ctx serpent_dec_cbc = {
.funcs = { {
.num_blocks = SERPENT_PARALLEL_BLOCKS,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(serpent_decrypt_cbc_xway) }
+ .fn_u = { .cbc = serpent_decrypt_cbc_xway }
}, {
.num_blocks = 1,
- .fn_u = { .cbc = GLUE_CBC_FUNC_CAST(__serpent_decrypt) }
+ .fn_u = { .cbc = __serpent_decrypt_cbc_glue }
} }
};
@@ -152,7 +158,7 @@ static int ecb_decrypt(struct skcipher_request *req)
static int cbc_encrypt(struct skcipher_request *req)
{
- return glue_cbc_encrypt_req_128bit(GLUE_FUNC_CAST(__serpent_encrypt),
+ return glue_cbc_encrypt_req_128bit(__serpent_encrypt_glue,
req);
}
diff --git a/arch/x86/include/asm/crypto/serpent-avx.h b/arch/x86/include/asm/crypto/serpent-avx.h
index db7c9cc32234..314080cf63e0 100644
--- a/arch/x86/include/asm/crypto/serpent-avx.h
+++ b/arch/x86/include/asm/crypto/serpent-avx.h
@@ -15,20 +15,31 @@ struct serpent_xts_ctx {
struct serpent_ctx crypt_ctx;
};
-asmlinkage void serpent_ecb_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void serpent_ecb_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-
-asmlinkage void serpent_cbc_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src);
-asmlinkage void serpent_ctr_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-
-asmlinkage void serpent_xts_enc_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
-asmlinkage void serpent_xts_dec_8way_avx(struct serpent_ctx *ctx, u8 *dst,
- const u8 *src, le128 *iv);
+#define SERPENT_GLUE(func) \
+asmlinkage void func(struct serpent_ctx *ctx, u8 *dst, const u8 *src); \
+asmlinkage static inline void func ## _glue(void *ctx, u8 *dst, const u8 *src) \
+{ func((struct serpent_ctx *) ctx, dst, src); }
+
+#define SERPENT_GLUE_CBC(func, helper) \
+asmlinkage void func(struct serpent_ctx *ctx, u8 *dst, const u8 *src); \
+asmlinkage static inline void helper(void *ctx, u128 *dst, const u128 *src) \
+{ func((struct serpent_ctx *) ctx, (u8 *) dst, (u8 *) src); }
+
+#define SERPENT_GLUE_CTR(func) \
+asmlinkage void func(struct serpent_ctx *ctx, u8 *dst, const u8 *src, \
+ le128 *iv); \
+asmlinkage static inline void func ## _glue(void *ctx, u128 *dst, \
+ const u128 *src, le128 *iv) \
+{ func((struct serpent_ctx *) ctx, (u8 *) dst, (u8 *) src, iv); }
+
+#define SERPENT_GLUE_XTS(func) SERPENT_GLUE_CTR(func)
+
+SERPENT_GLUE(serpent_ecb_enc_8way_avx);
+SERPENT_GLUE(serpent_ecb_dec_8way_avx);
+SERPENT_GLUE_CBC(serpent_cbc_dec_8way_avx, serpent_cbc_dec_8way_avx_glue);
+SERPENT_GLUE_CTR(serpent_ctr_8way_avx);
+SERPENT_GLUE_XTS(serpent_xts_enc_8way_avx);
+SERPENT_GLUE_XTS(serpent_xts_dec_8way_avx);
extern void __serpent_crypt_ctr(void *ctx, u128 *dst, const u128 *src,
le128 *iv);
diff --git a/arch/x86/include/asm/crypto/serpent-sse2.h b/arch/x86/include/asm/crypto/serpent-sse2.h
index 1a345e8a7496..fd82518869ba 100644
--- a/arch/x86/include/asm/crypto/serpent-sse2.h
+++ b/arch/x86/include/asm/crypto/serpent-sse2.h
@@ -5,6 +5,16 @@
#include <linux/crypto.h>
#include <crypto/serpent.h>
+#define SERPENT_GLUE(func) \
+asmlinkage void func(struct serpent_ctx *ctx, u8 *dst, const u8 *src); \
+asmlinkage static inline void func ## _glue(void *ctx, u8 *dst, const u8 *src) \
+{ func((struct serpent_ctx *) ctx, dst, src); }
+
+#define SERPENT_GLUE_CBC(func, helper) \
+asmlinkage void func(struct serpent_ctx *ctx, u8 *dst, const u8 *src); \
+asmlinkage static inline void helper(void *ctx, u128 *dst, const u128 *src) \
+{ func((struct serpent_ctx *) ctx, (u8 *) dst, (u8 *) src); }
+
#ifdef CONFIG_X86_32
#define SERPENT_PARALLEL_BLOCKS 4
--
2.16.4
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