crypto: aead - Remove unused cryptoff parameter

This patch removes the cryptoff parameter now that all users
set it to zero.

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

crypto/aead.c

@@ -106,10 +106,8 @@ static int old_crypt(struct aead_request *req,
 	if (req->old)
 		return crypt(req);
 
-	src = scatterwalk_ffwd(nreq->srcbuf, req->src,
-			       req->assoclen + req->cryptoff);
-	dst = scatterwalk_ffwd(nreq->dstbuf, req->dst,
-			       req->assoclen + req->cryptoff);
+	src = scatterwalk_ffwd(nreq->srcbuf, req->src, req->assoclen);
+	dst = scatterwalk_ffwd(nreq->dstbuf, req->dst, req->assoclen);
 
 	aead_request_set_tfm(&nreq->subreq, aead);
 	aead_request_set_callback(&nreq->subreq, aead_request_flags(req),

crypto/echainiv.c

@@ -259,7 +259,7 @@ static int echainiv_encrypt(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, req->dst, req->dst,
 			       req->cryptlen - ivsize, info);
-	aead_request_set_ad(subreq, req->assoclen + ivsize, 0);
+	aead_request_set_ad(subreq, req->assoclen + ivsize);
 
 	crypto_xor(info, ctx->salt, ivsize);
 	scatterwalk_map_and_copy(info, req->dst, req->assoclen, ivsize, 1);
@@ -322,7 +322,7 @@ static int echainiv_decrypt(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, req->src, req->dst,
 			       req->cryptlen - ivsize, req->iv);
-	aead_request_set_ad(subreq, req->assoclen + ivsize, 0);
+	aead_request_set_ad(subreq, req->assoclen + ivsize);
 
 	scatterwalk_map_and_copy(req->iv, req->src, req->assoclen, ivsize, 0);
 	if (req->src != req->dst)

crypto/seqiv.c

@@ -337,7 +337,7 @@ static int seqiv_aead_encrypt_compat(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, dst, dst,
 			       req->cryptlen - ivsize, req->iv);
-	aead_request_set_ad(subreq, req->assoclen, 0);
+	aead_request_set_ad(subreq, req->assoclen);
 
 	memcpy(buf, req->iv, ivsize);
 	crypto_xor(buf, ctx->salt, ivsize);
@@ -406,7 +406,7 @@ static int seqiv_aead_encrypt(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, req->dst, req->dst,
 			       req->cryptlen - ivsize, info);
-	aead_request_set_ad(subreq, req->assoclen + ivsize, 0);
+	aead_request_set_ad(subreq, req->assoclen + ivsize);
 
 	crypto_xor(info, ctx->salt, ivsize);
 	scatterwalk_map_and_copy(info, req->dst, req->assoclen, ivsize, 1);
@@ -473,7 +473,7 @@ static int seqiv_aead_decrypt_compat(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, dst, dst,
 			       req->cryptlen - ivsize, req->iv);
-	aead_request_set_ad(subreq, req->assoclen, 0);
+	aead_request_set_ad(subreq, req->assoclen);
 
 	err = crypto_aead_decrypt(subreq);
 	if (req->assoclen > 8)
@@ -501,7 +501,7 @@ static int seqiv_aead_decrypt(struct aead_request *req)
 	aead_request_set_callback(subreq, req->base.flags, compl, data);
 	aead_request_set_crypt(subreq, req->src, req->dst,
 			       req->cryptlen - ivsize, req->iv);
-	aead_request_set_ad(subreq, req->assoclen + ivsize, 0);
+	aead_request_set_ad(subreq, req->assoclen + ivsize);
 
 	scatterwalk_map_and_copy(req->iv, req->src, req->assoclen, ivsize, 0);
 	if (req->src != req->dst)

include/crypto/aead.h

@@ -52,7 +52,6 @@
  *	@base: Common attributes for async crypto requests
  *	@assoclen: Length in bytes of associated data for authentication
  *	@cryptlen: Length of data to be encrypted or decrypted
- *	@cryptoff: Bytes to skip after AD before plain/cipher text
  *	@iv: Initialisation vector
  *	@assoc: Associated data
  *	@src: Source data
@@ -66,7 +65,6 @@ struct aead_request {
 
 	unsigned int assoclen;
 	unsigned int cryptlen;
-	unsigned int cryptoff;
 
 	u8 *iv;
 
@@ -525,18 +523,15 @@ static inline void aead_request_set_assoc(struct aead_request *req,
  * aead_request_set_ad - set associated data information
  * @req: request handle
  * @assoclen: number of bytes in associated data
- * @cryptoff: Number of bytes to skip after AD before plain/cipher text
  *
  * Setting the AD information.  This function sets the length of
  * the associated data and the number of bytes to skip after it to
  * access the plain/cipher text.
  */
 static inline void aead_request_set_ad(struct aead_request *req,
-				       unsigned int assoclen,
-				       unsigned int cryptoff)
+				       unsigned int assoclen)
 {
 	req->assoclen = assoclen;
-	req->cryptoff = cryptoff;
 	req->old = false;
 }