[CRYPTO] scatterwalk: Use generic scatterlist chaining
Herbert Xu [Thu, 15 Nov 2007 04:08:45 +0000 (12:08 +0800)]
This patch converts the crypto scatterwalk code to use the generic
scatterlist chaining rather the version specific to crypto.

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

crypto/digest.c
crypto/hmac.c
crypto/scatterwalk.c
crypto/scatterwalk.h

index 8871dec..d3e827a 100644 (file)
@@ -21,7 +21,6 @@
 #include <linux/scatterlist.h>
 
 #include "internal.h"
-#include "scatterwalk.h"
 
 static int init(struct hash_desc *desc)
 {
@@ -77,7 +76,7 @@ static int update2(struct hash_desc *desc,
 
                if (!nbytes)
                        break;
-               sg = scatterwalk_sg_next(sg);
+               sg = sg_next(sg);
        }
 
        return 0;
index 0f05be7..34c3706 100644 (file)
@@ -160,7 +160,7 @@ static int hmac_digest(struct hash_desc *pdesc, struct scatterlist *sg,
 
        sg_init_table(sg1, 2);
        sg_set_buf(sg1, ipad, bs);
-       sg_set_page(&sg1[1], (void *) sg, 0, 0);
+       sg_chain(sg1, 2, sg);
 
        sg_init_table(sg2, 1);
        sg_set_buf(sg2, opad, bs + ds);
index b9bbda0..206c39a 100644 (file)
@@ -62,7 +62,7 @@ static void scatterwalk_pagedone(struct scatter_walk *walk, int out,
                walk->offset += PAGE_SIZE - 1;
                walk->offset &= PAGE_MASK;
                if (walk->offset >= walk->sg->offset + walk->sg->length)
-                       scatterwalk_start(walk, scatterwalk_sg_next(walk->sg));
+                       scatterwalk_start(walk, sg_next(walk->sg));
        }
 }
 
index 87ed681..fd5517d 100644 (file)
 
 #include "internal.h"
 
-static inline struct scatterlist *scatterwalk_sg_next(struct scatterlist *sg)
-{
-       return (++sg)->length ? sg : (void *) sg_page(sg);
-}
-
 static inline unsigned long scatterwalk_samebuf(struct scatter_walk *walk_in,
                                                struct scatter_walk *walk_out)
 {