[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, 7 insertions, 8 deletions

diff --git a/arch/s390/crypto/sha1_s390.c b/arch/s390/crypto/sha1_s390.c
index 36bb5346a8c4..9d34a35b1aa5 100644
--- a/arch/s390/crypto/sha1_s390.c
+++ b/arch/s390/crypto/sha1_s390.c
@@ -40,9 +40,9 @@ struct crypt_s390_sha1_ctx {
         u8 buffer[2 * SHA1_BLOCK_SIZE];
 };
 
-static void sha1_init(void *ctx_arg) 
+static void sha1_init(struct crypto_tfm *tfm)
 {
-        struct crypt_s390_sha1_ctx *ctx = ctx_arg;
+        struct crypt_s390_sha1_ctx *ctx = crypto_tfm_ctx(tfm);
         static const u32 initstate[5] = {
                 0x67452301,
                 0xEFCDAB89,
@@ -56,13 +56,13 @@ static void sha1_init(void *ctx_arg)
         ctx->buf_len = 0;
 }
 
-static void
-sha1_update(void *ctx, const u8 *data, unsigned int len)
+static void sha1_update(struct crypto_tfm *tfm, const u8 *data,
+                        unsigned int len)
 {
         struct crypt_s390_sha1_ctx *sctx;
         long imd_len;
 
-        sctx = ctx;
+        sctx = crypto_tfm_ctx(tfm);
         sctx->count += len * 8; //message bit length
 
         //anything in buffer yet? -> must be completed
@@ -111,10 +111,9 @@ pad_message(struct crypt_s390_sha1_ctx* sctx)
 }
 
 /* Add padding and return the message digest. */
-static void
-sha1_final(void* ctx, u8 *out)
+static void sha1_final(struct crypto_tfm *tfm, u8 *out)
 {
-        struct crypt_s390_sha1_ctx *sctx = ctx;
+        struct crypt_s390_sha1_ctx *sctx = crypto_tfm_ctx(tfm);
 
         //must perform manual padding
         pad_message(sctx);