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>

4 files changed, 9 insertions, 16 deletions

diff --git a/crypto/aead.c b/crypto/aead.c
index 070e4b9e94f8..7c3d725bd264 100644
--- a/crypto/aead.c
+++ b/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),
diff --git a/crypto/echainiv.c b/crypto/echainiv.c
index 149d8fb87962..bd85dcc4fa3d 100644
--- a/crypto/echainiv.c
+++ b/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)
diff --git a/crypto/seqiv.c b/crypto/seqiv.c
index 16738c5f62bd..127970a69ecf 100644
--- a/crypto/seqiv.c
+++ b/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)
diff --git a/include/crypto/aead.h b/include/crypto/aead.h
index ba28c61e765f..94141dc1225e 100644
--- a/include/crypto/aead.h
+++ b/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;
 }