sctp: Use shash

This patch replaces uses of the long obsolete hash interface with
shash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: David S. Miller <davem@davemloft.net>

4 files changed, 52 insertions, 44 deletions

diff --git a/net/sctp/auth.c b/net/sctp/auth.c
index 1543e39f47c3..912eb1685a5d 100644
--- a/net/sctp/auth.c
+++ b/net/sctp/auth.c
@@ -27,9 +27,9 @@
  *   Vlad Yasevich     <vladislav.yasevich@hp.com>
  */
 
+#include <crypto/hash.h>
 #include <linux/slab.h>
 #include <linux/types.h>
-#include <linux/crypto.h>
 #include <linux/scatterlist.h>
 #include <net/sctp/sctp.h>
 #include <net/sctp/auth.h>
@@ -448,7 +448,7 @@ struct sctp_shared_key *sctp_auth_get_shkey(
  */
 int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp)
 {
-	struct crypto_hash *tfm = NULL;
+	struct crypto_shash *tfm = NULL;
 	__u16   id;
 
 	/* If AUTH extension is disabled, we are done */
@@ -462,9 +462,8 @@ int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp)
 		return 0;
 
 	/* Allocated the array of pointers to transorms */
-	ep->auth_hmacs = kzalloc(
-			    sizeof(struct crypto_hash *) * SCTP_AUTH_NUM_HMACS,
-			    gfp);
+	ep->auth_hmacs = kzalloc(sizeof(struct crypto_shash *) *
+				 SCTP_AUTH_NUM_HMACS, gfp);
 	if (!ep->auth_hmacs)
 		return -ENOMEM;
 
@@ -483,8 +482,7 @@ int sctp_auth_init_hmacs(struct sctp_endpoint *ep, gfp_t gfp)
 			continue;
 
 		/* Allocate the ID */
-		tfm = crypto_alloc_hash(sctp_hmac_list[id].hmac_name, 0,
-					CRYPTO_ALG_ASYNC);
+		tfm = crypto_alloc_shash(sctp_hmac_list[id].hmac_name, 0, 0);
 		if (IS_ERR(tfm))
 			goto out_err;
 
@@ -500,7 +498,7 @@ out_err:
 }
 
 /* Destroy the hmac tfm array */
-void sctp_auth_destroy_hmacs(struct crypto_hash *auth_hmacs[])
+void sctp_auth_destroy_hmacs(struct crypto_shash *auth_hmacs[])
 {
 	int i;
 
@@ -508,8 +506,7 @@ void sctp_auth_destroy_hmacs(struct crypto_hash *auth_hmacs[])
 		return;
 
 	for (i = 0; i < SCTP_AUTH_NUM_HMACS; i++) {
-		if (auth_hmacs[i])
-			crypto_free_hash(auth_hmacs[i]);
+		crypto_free_shash(auth_hmacs[i]);
 	}
 	kfree(auth_hmacs);
 }
@@ -709,8 +706,7 @@ void sctp_auth_calculate_hmac(const struct sctp_association *asoc,
 			      struct sctp_auth_chunk *auth,
 			      gfp_t gfp)
 {
-	struct scatterlist sg;
-	struct hash_desc desc;
+	struct crypto_shash *tfm;
 	struct sctp_auth_bytes *asoc_key;
 	__u16 key_id, hmac_id;
 	__u8 *digest;
@@ -742,16 +738,22 @@ void sctp_auth_calculate_hmac(const struct sctp_association *asoc,
 
 	/* set up scatter list */
 	end = skb_tail_pointer(skb);
-	sg_init_one(&sg, auth, end - (unsigned char *)auth);
 
-	desc.tfm = asoc->ep->auth_hmacs[hmac_id];
-	desc.flags = 0;
+	tfm = asoc->ep->auth_hmacs[hmac_id];
 
 	digest = auth->auth_hdr.hmac;
-	if (crypto_hash_setkey(desc.tfm, &asoc_key->data[0], asoc_key->len))
+	if (crypto_shash_setkey(tfm, &asoc_key->data[0], asoc_key->len))
 		goto free;
 
-	crypto_hash_digest(&desc, &sg, sg.length, digest);
+	{
+		SHASH_DESC_ON_STACK(desc, tfm);
+
+		desc->tfm = tfm;
+		desc->flags = 0;
+		crypto_shash_digest(desc, (u8 *)auth,
+				    end - (unsigned char *)auth, digest);
+		shash_desc_zero(desc);
+	}
 
 free:
 	if (free_key)
diff --git a/net/sctp/endpointola.c b/net/sctp/endpointola.c
index 2522a6175291..9d494e35e7f9 100644
--- a/net/sctp/endpointola.c
+++ b/net/sctp/endpointola.c
@@ -42,7 +42,6 @@
 #include <linux/slab.h>
 #include <linux/in.h>
 #include <linux/random.h>	/* get_random_bytes() */
-#include <linux/crypto.h>
 #include <net/sock.h>
 #include <net/ipv6.h>
 #include <net/sctp/sctp.h>
diff --git a/net/sctp/sm_make_chunk.c b/net/sctp/sm_make_chunk.c
index 5d6a03fad378..1296e555fe29 100644
--- a/net/sctp/sm_make_chunk.c
+++ b/net/sctp/sm_make_chunk.c
@@ -45,6 +45,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <crypto/hash.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/ip.h>
@@ -52,7 +53,6 @@
 #include <linux/net.h>
 #include <linux/inet.h>
 #include <linux/scatterlist.h>
-#include <linux/crypto.h>
 #include <linux/slab.h>
 #include <net/sock.h>
 
@@ -1606,7 +1606,6 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
 {
 	sctp_cookie_param_t *retval;
 	struct sctp_signed_cookie *cookie;
-	struct scatterlist sg;
 	int headersize, bodysize;
 
 	/* Header size is static data prior to the actual cookie, including
@@ -1663,16 +1662,19 @@ static sctp_cookie_param_t *sctp_pack_cookie(const struct sctp_endpoint *ep,
 	       ntohs(init_chunk->chunk_hdr->length), raw_addrs, addrs_len);
 
 	if (sctp_sk(ep->base.sk)->hmac) {
-		struct hash_desc desc;
+		SHASH_DESC_ON_STACK(desc, sctp_sk(ep->base.sk)->hmac);
+		int err;
 
 		/* Sign the message.  */
-		sg_init_one(&sg, &cookie->c, bodysize);
-		desc.tfm = sctp_sk(ep->base.sk)->hmac;
-		desc.flags = 0;
-
-		if (crypto_hash_setkey(desc.tfm, ep->secret_key,
-				       sizeof(ep->secret_key)) ||
-		    crypto_hash_digest(&desc, &sg, bodysize, cookie->signature))
+		desc->tfm = sctp_sk(ep->base.sk)->hmac;
+		desc->flags = 0;
+
+		err = crypto_shash_setkey(desc->tfm, ep->secret_key,
+					  sizeof(ep->secret_key)) ?:
+		      crypto_shash_digest(desc, (u8 *)&cookie->c, bodysize,
+					  cookie->signature);
+		shash_desc_zero(desc);
+		if (err)
 			goto free_cookie;
 	}
 
@@ -1697,12 +1699,10 @@ struct sctp_association *sctp_unpack_cookie(
 	struct sctp_cookie *bear_cookie;
 	int headersize, bodysize, fixed_size;
 	__u8 *digest = ep->digest;
-	struct scatterlist sg;
 	unsigned int len;
 	sctp_scope_t scope;
 	struct sk_buff *skb = chunk->skb;
 	ktime_t kt;
-	struct hash_desc desc;
 
 	/* Header size is static data prior to the actual cookie, including
 	 * any padding.
@@ -1733,16 +1733,23 @@ struct sctp_association *sctp_unpack_cookie(
 		goto no_hmac;
 
 	/* Check the signature.  */
-	sg_init_one(&sg, bear_cookie, bodysize);
-	desc.tfm = sctp_sk(ep->base.sk)->hmac;
-	desc.flags = 0;
-
-	memset(digest, 0x00, SCTP_SIGNATURE_SIZE);
-	if (crypto_hash_setkey(desc.tfm, ep->secret_key,
-			       sizeof(ep->secret_key)) ||
-	    crypto_hash_digest(&desc, &sg, bodysize, digest)) {
-		*error = -SCTP_IERROR_NOMEM;
-		goto fail;
+	{
+		SHASH_DESC_ON_STACK(desc, sctp_sk(ep->base.sk)->hmac);
+		int err;
+
+		desc->tfm = sctp_sk(ep->base.sk)->hmac;
+		desc->flags = 0;
+
+		err = crypto_shash_setkey(desc->tfm, ep->secret_key,
+					  sizeof(ep->secret_key)) ?:
+		      crypto_shash_digest(desc, (u8 *)bear_cookie, bodysize,
+					  digest);
+		shash_desc_zero(desc);
+
+		if (err) {
+			*error = -SCTP_IERROR_NOMEM;
+			goto fail;
+		}
 	}
 
 	if (memcmp(digest, cookie->signature, SCTP_SIGNATURE_SIZE)) {
diff --git a/net/sctp/socket.c b/net/sctp/socket.c
index 9bb80ec4c08f..4101c5b653d0 100644
--- a/net/sctp/socket.c
+++ b/net/sctp/socket.c
@@ -52,6 +52,7 @@
 
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
+#include <crypto/hash.h>
 #include <linux/types.h>
 #include <linux/kernel.h>
 #include <linux/wait.h>
@@ -61,7 +62,6 @@
 #include <linux/fcntl.h>
 #include <linux/poll.h>
 #include <linux/init.h>
-#include <linux/crypto.h>
 #include <linux/slab.h>
 #include <linux/file.h>
 #include <linux/compat.h>
@@ -4160,7 +4160,7 @@ static void sctp_destruct_sock(struct sock *sk)
 	struct sctp_sock *sp = sctp_sk(sk);
 
 	/* Free up the HMAC transform. */
-	crypto_free_hash(sp->hmac);
+	crypto_free_shash(sp->hmac);
 
 	inet_sock_destruct(sk);
 }
@@ -6299,13 +6299,13 @@ static int sctp_listen_start(struct sock *sk, int backlog)
 {
 	struct sctp_sock *sp = sctp_sk(sk);
 	struct sctp_endpoint *ep = sp->ep;
-	struct crypto_hash *tfm = NULL;
+	struct crypto_shash *tfm = NULL;
 	char alg[32];
 
 	/* Allocate HMAC for generating cookie. */
 	if (!sp->hmac && sp->sctp_hmac_alg) {
 		sprintf(alg, "hmac(%s)", sp->sctp_hmac_alg);
-		tfm = crypto_alloc_hash(alg, 0, CRYPTO_ALG_ASYNC);
+		tfm = crypto_alloc_shash(alg, 0, 0);
 		if (IS_ERR(tfm)) {
 			net_info_ratelimited("failed to load transform for %s: %ld\n",
 					     sp->sctp_hmac_alg, PTR_ERR(tfm));