drbd: Use shash and ahash

This patch replaces uses of the long obsolete hash interface with
either shash (for non-SG users) or ahash.

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

1 files changed, 24 insertions, 19 deletions

diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index eff716c27b1f..4d87499f0d54 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -274,51 +274,56 @@ void drbd_request_endio(struct bio *bio)
 		complete_master_bio(device, &m);
 }
 
-void drbd_csum_ee(struct crypto_hash *tfm, struct drbd_peer_request *peer_req, void *digest)
+void drbd_csum_ee(struct crypto_ahash *tfm, struct drbd_peer_request *peer_req, void *digest)
 {
-	struct hash_desc desc;
+	AHASH_REQUEST_ON_STACK(req, tfm);
 	struct scatterlist sg;
 	struct page *page = peer_req->pages;
 	struct page *tmp;
 	unsigned len;
 
-	desc.tfm = tfm;
-	desc.flags = 0;
+	ahash_request_set_tfm(req, tfm);
+	ahash_request_set_callback(req, 0, NULL, NULL);
 
 	sg_init_table(&sg, 1);
-	crypto_hash_init(&desc);
+	crypto_ahash_init(req);
 
 	while ((tmp = page_chain_next(page))) {
 		/* all but the last page will be fully used */
 		sg_set_page(&sg, page, PAGE_SIZE, 0);
-		crypto_hash_update(&desc, &sg, sg.length);
+		ahash_request_set_crypt(req, &sg, NULL, sg.length);
+		crypto_ahash_update(req);
 		page = tmp;
 	}
 	/* and now the last, possibly only partially used page */
 	len = peer_req->i.size & (PAGE_SIZE - 1);
 	sg_set_page(&sg, page, len ?: PAGE_SIZE, 0);
-	crypto_hash_update(&desc, &sg, sg.length);
-	crypto_hash_final(&desc, digest);
+	ahash_request_set_crypt(req, &sg, digest, sg.length);
+	crypto_ahash_finup(req);
+	ahash_request_zero(req);
 }
 
-void drbd_csum_bio(struct crypto_hash *tfm, struct bio *bio, void *digest)
+void drbd_csum_bio(struct crypto_ahash *tfm, struct bio *bio, void *digest)
 {
-	struct hash_desc desc;
+	AHASH_REQUEST_ON_STACK(req, tfm);
 	struct scatterlist sg;
 	struct bio_vec bvec;
 	struct bvec_iter iter;
 
-	desc.tfm = tfm;
-	desc.flags = 0;
+	ahash_request_set_tfm(req, tfm);
+	ahash_request_set_callback(req, 0, NULL, NULL);
 
 	sg_init_table(&sg, 1);
-	crypto_hash_init(&desc);
+	crypto_ahash_init(req);
 
 	bio_for_each_segment(bvec, bio, iter) {
 		sg_set_page(&sg, bvec.bv_page, bvec.bv_len, bvec.bv_offset);
-		crypto_hash_update(&desc, &sg, sg.length);
+		ahash_request_set_crypt(req, &sg, NULL, sg.length);
+		crypto_ahash_update(req);
 	}
-	crypto_hash_final(&desc, digest);
+	ahash_request_set_crypt(req, NULL, digest, 0);
+	crypto_ahash_final(req);
+	ahash_request_zero(req);
 }
 
 /* MAYBE merge common code with w_e_end_ov_req */
@@ -337,7 +342,7 @@ static int w_e_send_csum(struct drbd_work *w, int cancel)
 	if (unlikely((peer_req->flags & EE_WAS_ERROR) != 0))
 		goto out;
 
-	digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
+	digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
 	digest = kmalloc(digest_size, GFP_NOIO);
 	if (digest) {
 		sector_t sector = peer_req->i.sector;
@@ -1113,7 +1118,7 @@ int w_e_end_csum_rs_req(struct drbd_work *w, int cancel)
 		 * a real fix would be much more involved,
 		 * introducing more locking mechanisms */
 		if (peer_device->connection->csums_tfm) {
-			digest_size = crypto_hash_digestsize(peer_device->connection->csums_tfm);
+			digest_size = crypto_ahash_digestsize(peer_device->connection->csums_tfm);
 			D_ASSERT(device, digest_size == di->digest_size);
 			digest = kmalloc(digest_size, GFP_NOIO);
 		}
@@ -1163,7 +1168,7 @@ int w_e_end_ov_req(struct drbd_work *w, int cancel)
 	if (unlikely(cancel))
 		goto out;
 
-	digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
+	digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
 	digest = kmalloc(digest_size, GFP_NOIO);
 	if (!digest) {
 		err = 1;	/* terminate the connection in case the allocation failed */
@@ -1235,7 +1240,7 @@ int w_e_end_ov_reply(struct drbd_work *w, int cancel)
 	di = peer_req->digest;
 
 	if (likely((peer_req->flags & EE_WAS_ERROR) == 0)) {
-		digest_size = crypto_hash_digestsize(peer_device->connection->verify_tfm);
+		digest_size = crypto_ahash_digestsize(peer_device->connection->verify_tfm);
 		digest = kmalloc(digest_size, GFP_NOIO);
 		if (digest) {
 			drbd_csum_ee(peer_device->connection->verify_tfm, peer_req, digest);