[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, 8 insertions, 7 deletions

diff --git a/crypto/cast6.c b/crypto/cast6.c
index 9e28740..08e33bf 100644
--- a/crypto/cast6.c
+++ b/crypto/cast6.c
@@ -381,13 +381,13 @@ static inline void W(u32 *key, unsigned int i) {
 	key[7] ^= F2(key[0], Tr[i % 4][7], Tm[i][7]);
 }
 
-static int
-cast6_setkey(void *ctx, const u8 * in_key, unsigned key_len, u32 * flags)
+static int cast6_setkey(struct crypto_tfm *tfm, const u8 *in_key,
+			unsigned key_len, u32 *flags)
 {
 	int i;
 	u32 key[8];
 	__be32 p_key[8]; /* padded key */
-	struct cast6_ctx *c = (struct cast6_ctx *) ctx;
+	struct cast6_ctx *c = crypto_tfm_ctx(tfm);
 
 	if (key_len < 16 || key_len > 32 || key_len % 4 != 0) {
 		*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
@@ -444,8 +444,9 @@ static inline void QBAR (u32 * block, u8 * Kr, u32 * Km) {
         block[2] ^= F1(block[3], Kr[0], Km[0]);
 }
 
-static void cast6_encrypt (void * ctx, u8 * outbuf, const u8 * inbuf) {
-	struct cast6_ctx * c = (struct cast6_ctx *)ctx;
+static void cast6_encrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf)
+{
+	struct cast6_ctx *c = crypto_tfm_ctx(tfm);
 	const __be32 *src = (const __be32 *)inbuf;
 	__be32 *dst = (__be32 *)outbuf;
 	u32 block[4];
@@ -476,8 +477,8 @@ static void cast6_encrypt (void * ctx, u8 * outbuf, const u8 * inbuf) {
 	dst[3] = cpu_to_be32(block[3]);
 }	
 
-static void cast6_decrypt (void * ctx, u8 * outbuf, const u8 * inbuf) {
-	struct cast6_ctx * c = (struct cast6_ctx *)ctx;
+static void cast6_decrypt(struct crypto_tfm *tfm, u8 *outbuf, const u8 *inbuf) {
+	struct cast6_ctx * c = crypto_tfm_ctx(tfm);
 	const __be32 *src = (const __be32 *)inbuf;
 	__be32 *dst = (__be32 *)outbuf;
 	u32 block[4];