[CRYPTO] all: Pass tfm instead of ctx to algorithms

Up until now algorithms have been happy to get a context pointer since
they know everything that's in the tfm already (e.g., alignment, block
size).

However, once we have parameterised algorithms, such information will
be specific to each tfm.  So the algorithm API needs to be changed to
pass the tfm structure instead of the context pointer.

This patch is basically a text substitution.  The only tricky bit is
the assembly routines that need to get the context pointer offset
through asm-offsets.h.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 14 insertions, 15 deletions

diff --git a/drivers/crypto/padlock-aes.c b/drivers/crypto/padlock-aes.c
index 5158a9d..b98ad20 100644
--- a/drivers/crypto/padlock-aes.c
+++ b/drivers/crypto/padlock-aes.c
@@ -282,19 +282,20 @@ aes_hw_extkey_available(uint8_t key_len)
 	return 0;
 }
 
-static inline struct aes_ctx *aes_ctx(void *ctx)
+static inline struct aes_ctx *aes_ctx(struct crypto_tfm *tfm)
 {
+	unsigned long addr = (unsigned long)crypto_tfm_ctx(tfm);
 	unsigned long align = PADLOCK_ALIGNMENT;
 
 	if (align <= crypto_tfm_ctx_alignment())
 		align = 1;
-	return (struct aes_ctx *)ALIGN((unsigned long)ctx, align);
+	return (struct aes_ctx *)ALIGN(addr, align);
 }
 
-static int
-aes_set_key(void *ctx_arg, const uint8_t *in_key, unsigned int key_len, uint32_t *flags)
+static int aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
+		       unsigned int key_len, u32 *flags)
 {
-	struct aes_ctx *ctx = aes_ctx(ctx_arg);
+	struct aes_ctx *ctx = aes_ctx(tfm);
 	const __le32 *key = (const __le32 *)in_key;
 	uint32_t i, t, u, v, w;
 	uint32_t P[AES_EXTENDED_KEY_SIZE];
@@ -414,24 +415,22 @@ static inline u8 *padlock_xcrypt_cbc(const u8 *input, u8 *output, void *key,
 	return iv;
 }
 
-static void
-aes_encrypt(void *ctx_arg, uint8_t *out, const uint8_t *in)
+static void aes_encrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-	struct aes_ctx *ctx = aes_ctx(ctx_arg);
+	struct aes_ctx *ctx = aes_ctx(tfm);
 	padlock_xcrypt_ecb(in, out, ctx->E, &ctx->cword.encrypt, 1);
 }
 
-static void
-aes_decrypt(void *ctx_arg, uint8_t *out, const uint8_t *in)
+static void aes_decrypt(struct crypto_tfm *tfm, u8 *out, const u8 *in)
 {
-	struct aes_ctx *ctx = aes_ctx(ctx_arg);
+	struct aes_ctx *ctx = aes_ctx(tfm);
 	padlock_xcrypt_ecb(in, out, ctx->D, &ctx->cword.decrypt, 1);
 }
 
 static unsigned int aes_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
 				    const u8 *in, unsigned int nbytes)
 {
-	struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+	struct aes_ctx *ctx = aes_ctx(desc->tfm);
 	padlock_xcrypt_ecb(in, out, ctx->E, &ctx->cword.encrypt,
 			   nbytes / AES_BLOCK_SIZE);
 	return nbytes & ~(AES_BLOCK_SIZE - 1);
@@ -440,7 +439,7 @@ static unsigned int aes_encrypt_ecb(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
 				    const u8 *in, unsigned int nbytes)
 {
-	struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+	struct aes_ctx *ctx = aes_ctx(desc->tfm);
 	padlock_xcrypt_ecb(in, out, ctx->D, &ctx->cword.decrypt,
 			   nbytes / AES_BLOCK_SIZE);
 	return nbytes & ~(AES_BLOCK_SIZE - 1);
@@ -449,7 +448,7 @@ static unsigned int aes_decrypt_ecb(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
 				    const u8 *in, unsigned int nbytes)
 {
-	struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+	struct aes_ctx *ctx = aes_ctx(desc->tfm);
 	u8 *iv;
 
 	iv = padlock_xcrypt_cbc(in, out, ctx->E, desc->info,
@@ -462,7 +461,7 @@ static unsigned int aes_encrypt_cbc(const struct cipher_desc *desc, u8 *out,
 static unsigned int aes_decrypt_cbc(const struct cipher_desc *desc, u8 *out,
 				    const u8 *in, unsigned int nbytes)
 {
-	struct aes_ctx *ctx = aes_ctx(crypto_tfm_ctx(desc->tfm));
+	struct aes_ctx *ctx = aes_ctx(desc->tfm);
 	padlock_xcrypt_cbc(in, out, ctx->D, desc->info, &ctx->cword.decrypt,
 			   nbytes / AES_BLOCK_SIZE);
 	return nbytes & ~(AES_BLOCK_SIZE - 1);