1 files changed, 539 insertions, 854 deletions

diff --git a/crypto/gcm.c b/crypto/gcm.c
index 43e1fb05ea54..97716482bed0 100644
--- a/crypto/gcm.c
+++ b/crypto/gcm.c
@@ -1,11 +1,8 @@
+// SPDX-License-Identifier: GPL-2.0-only
 /*
  * GCM: Galois/Counter Mode.
  *
  * Copyright (c) 2007 Nokia Siemens Networks - Mikko Herranen <mh1@iki.fi>
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License version 2 as published
- * by the Free Software Foundation.
  */
 
 #include <crypto/gf128mul.h>
@@ -13,9 +10,8 @@
 #include <crypto/internal/skcipher.h>
 #include <crypto/internal/hash.h>
 #include <crypto/scatterwalk.h>
+#include <crypto/gcm.h>
 #include <crypto/hash.h>
-#include "internal.h"
-#include <linux/completion.h>
 #include <linux/err.h>
 #include <linux/init.h>
 #include <linux/kernel.h>
@@ -28,7 +24,7 @@ struct gcm_instance_ctx {
 };
 
 struct crypto_gcm_ctx {
-	struct crypto_ablkcipher *ctr;
+	struct crypto_skcipher *ctr;
 	struct crypto_ahash *ghash;
 };
 
@@ -37,50 +33,49 @@ struct crypto_rfc4106_ctx {
 	u8 nonce[4];
 };
 
+struct crypto_rfc4106_req_ctx {
+	struct scatterlist src[3];
+	struct scatterlist dst[3];
+	struct aead_request subreq;
+};
+
 struct crypto_rfc4543_instance_ctx {
 	struct crypto_aead_spawn aead;
-	struct crypto_skcipher_spawn null;
 };
 
 struct crypto_rfc4543_ctx {
 	struct crypto_aead *child;
-	struct crypto_blkcipher *null;
 	u8 nonce[4];
 };
 
 struct crypto_rfc4543_req_ctx {
-	u8 auth_tag[16];
-	u8 assocbuf[32];
-	struct scatterlist cipher[1];
-	struct scatterlist payload[2];
-	struct scatterlist assoc[2];
 	struct aead_request subreq;
 };
 
 struct crypto_gcm_ghash_ctx {
 	unsigned int cryptlen;
 	struct scatterlist *src;
-	void (*complete)(struct aead_request *req, int err);
+	int (*complete)(struct aead_request *req, u32 flags);
 };
 
 struct crypto_gcm_req_priv_ctx {
+	u8 iv[16];
 	u8 auth_tag[16];
 	u8 iauth_tag[16];
-	struct scatterlist src[2];
-	struct scatterlist dst[2];
+	struct scatterlist src[3];
+	struct scatterlist dst[3];
+	struct scatterlist sg;
 	struct crypto_gcm_ghash_ctx ghash_ctx;
 	union {
 		struct ahash_request ahreq;
-		struct ablkcipher_request abreq;
+		struct skcipher_request skreq;
 	} u;
 };
 
-struct crypto_gcm_setkey_result {
-	int err;
-	struct completion completion;
-};
-
-static void *gcm_zeroes;
+static struct {
+	u8 buf[16];
+	struct scatterlist sg;
+} *gcm_zeroes;
 
 static inline struct crypto_gcm_req_priv_ctx *crypto_gcm_reqctx(
 	struct aead_request *req)
@@ -90,67 +85,47 @@ static inline struct crypto_gcm_req_priv_ctx *crypto_gcm_reqctx(
 	return (void *)PTR_ALIGN((u8 *)aead_request_ctx(req), align + 1);
 }
 
-static void crypto_gcm_setkey_done(struct crypto_async_request *req, int err)
-{
-	struct crypto_gcm_setkey_result *result = req->data;
-
-	if (err == -EINPROGRESS)
-		return;
-
-	result->err = err;
-	complete(&result->completion);
-}
-
 static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
 			     unsigned int keylen)
 {
 	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
 	struct crypto_ahash *ghash = ctx->ghash;
-	struct crypto_ablkcipher *ctr = ctx->ctr;
+	struct crypto_skcipher *ctr = ctx->ctr;
 	struct {
 		be128 hash;
-		u8 iv[8];
+		u8 iv[16];
 
-		struct crypto_gcm_setkey_result result;
+		struct crypto_wait wait;
 
 		struct scatterlist sg[1];
-		struct ablkcipher_request req;
+		struct skcipher_request req;
 	} *data;
 	int err;
 
-	crypto_ablkcipher_clear_flags(ctr, CRYPTO_TFM_REQ_MASK);
-	crypto_ablkcipher_set_flags(ctr, crypto_aead_get_flags(aead) &
-				   CRYPTO_TFM_REQ_MASK);
-
-	err = crypto_ablkcipher_setkey(ctr, key, keylen);
+	crypto_skcipher_clear_flags(ctr, CRYPTO_TFM_REQ_MASK);
+	crypto_skcipher_set_flags(ctr, crypto_aead_get_flags(aead) &
+				       CRYPTO_TFM_REQ_MASK);
+	err = crypto_skcipher_setkey(ctr, key, keylen);
 	if (err)
 		return err;
 
-	crypto_aead_set_flags(aead, crypto_ablkcipher_get_flags(ctr) &
-				       CRYPTO_TFM_RES_MASK);
-
-	data = kzalloc(sizeof(*data) + crypto_ablkcipher_reqsize(ctr),
+	data = kzalloc(sizeof(*data) + crypto_skcipher_reqsize(ctr),
 		       GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
 
-	init_completion(&data->result.completion);
+	crypto_init_wait(&data->wait);
 	sg_init_one(data->sg, &data->hash, sizeof(data->hash));
-	ablkcipher_request_set_tfm(&data->req, ctr);
-	ablkcipher_request_set_callback(&data->req, CRYPTO_TFM_REQ_MAY_SLEEP |
-						    CRYPTO_TFM_REQ_MAY_BACKLOG,
-					crypto_gcm_setkey_done,
-					&data->result);
-	ablkcipher_request_set_crypt(&data->req, data->sg, data->sg,
-				     sizeof(data->hash), data->iv);
-
-	err = crypto_ablkcipher_encrypt(&data->req);
-	if (err == -EINPROGRESS || err == -EBUSY) {
-		err = wait_for_completion_interruptible(
-			&data->result.completion);
-		if (!err)
-			err = data->result.err;
-	}
+	skcipher_request_set_tfm(&data->req, ctr);
+	skcipher_request_set_callback(&data->req, CRYPTO_TFM_REQ_MAY_SLEEP |
+						  CRYPTO_TFM_REQ_MAY_BACKLOG,
+				      crypto_req_done,
+				      &data->wait);
+	skcipher_request_set_crypt(&data->req, data->sg, data->sg,
+				   sizeof(data->hash), data->iv);
+
+	err = crypto_wait_req(crypto_skcipher_encrypt(&data->req),
+							&data->wait);
 
 	if (err)
 		goto out;
@@ -159,62 +134,57 @@ static int crypto_gcm_setkey(struct crypto_aead *aead, const u8 *key,
 	crypto_ahash_set_flags(ghash, crypto_aead_get_flags(aead) &
 			       CRYPTO_TFM_REQ_MASK);
 	err = crypto_ahash_setkey(ghash, (u8 *)&data->hash, sizeof(be128));
-	crypto_aead_set_flags(aead, crypto_ahash_get_flags(ghash) &
-			      CRYPTO_TFM_RES_MASK);
-
 out:
-	kfree(data);
+	kfree_sensitive(data);
 	return err;
 }
 
 static int crypto_gcm_setauthsize(struct crypto_aead *tfm,
 				  unsigned int authsize)
 {
-	switch (authsize) {
-	case 4:
-	case 8:
-	case 12:
-	case 13:
-	case 14:
-	case 15:
-	case 16:
-		break;
-	default:
-		return -EINVAL;
-	}
-
-	return 0;
+	return crypto_gcm_check_authsize(authsize);
 }
 
-static void crypto_gcm_init_crypt(struct ablkcipher_request *ablk_req,
-				  struct aead_request *req,
-				  unsigned int cryptlen)
+static void crypto_gcm_init_common(struct aead_request *req)
 {
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
-	struct scatterlist *dst;
 	__be32 counter = cpu_to_be32(1);
+	struct scatterlist *sg;
 
 	memset(pctx->auth_tag, 0, sizeof(pctx->auth_tag));
-	memcpy(req->iv + 12, &counter, 4);
+	memcpy(pctx->iv, req->iv, GCM_AES_IV_SIZE);
+	memcpy(pctx->iv + GCM_AES_IV_SIZE, &counter, 4);
 
-	sg_init_table(pctx->src, 2);
+	sg_init_table(pctx->src, 3);
 	sg_set_buf(pctx->src, pctx->auth_tag, sizeof(pctx->auth_tag));
-	scatterwalk_sg_chain(pctx->src, 2, req->src);
+	sg = scatterwalk_ffwd(pctx->src + 1, req->src, req->assoclen);
+	if (sg != pctx->src + 1)
+		sg_chain(pctx->src, 2, sg);
 
-	dst = pctx->src;
 	if (req->src != req->dst) {
-		sg_init_table(pctx->dst, 2);
+		sg_init_table(pctx->dst, 3);
 		sg_set_buf(pctx->dst, pctx->auth_tag, sizeof(pctx->auth_tag));
-		scatterwalk_sg_chain(pctx->dst, 2, req->dst);
-		dst = pctx->dst;
+		sg = scatterwalk_ffwd(pctx->dst + 1, req->dst, req->assoclen);
+		if (sg != pctx->dst + 1)
+			sg_chain(pctx->dst, 2, sg);
 	}
+}
+
+static void crypto_gcm_init_crypt(struct aead_request *req,
+				  unsigned int cryptlen)
+{
+	struct crypto_aead *aead = crypto_aead_reqtfm(req);
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(aead);
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	struct skcipher_request *skreq = &pctx->u.skreq;
+	struct scatterlist *dst;
 
-	ablkcipher_request_set_tfm(ablk_req, ctx->ctr);
-	ablkcipher_request_set_crypt(ablk_req, pctx->src, dst,
+	dst = req->src == req->dst ? pctx->src : pctx->dst;
+
+	skcipher_request_set_tfm(skreq, ctx->ctr);
+	skcipher_request_set_crypt(skreq, pctx->src, dst,
 				     cryptlen + sizeof(pctx->auth_tag),
-				     req->iv);
+				     pctx->iv);
 }
 
 static inline unsigned int gcm_remain(unsigned int len)
@@ -223,357 +193,272 @@ static inline unsigned int gcm_remain(unsigned int len)
 	return len ? 16 - len : 0;
 }
 
-static void gcm_hash_len_done(struct crypto_async_request *areq, int err);
-static void gcm_hash_final_done(struct crypto_async_request *areq, int err);
+static void gcm_hash_len_done(void *data, int err);
 
 static int gcm_hash_update(struct aead_request *req,
-			   struct crypto_gcm_req_priv_ctx *pctx,
-			   crypto_completion_t complete,
+			   crypto_completion_t compl,
 			   struct scatterlist *src,
-			   unsigned int len)
+			   unsigned int len, u32 flags)
 {
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct ahash_request *ahreq = &pctx->u.ahreq;
 
-	ahash_request_set_callback(ahreq, aead_request_flags(req),
-				   complete, req);
+	ahash_request_set_callback(ahreq, flags, compl, req);
 	ahash_request_set_crypt(ahreq, src, NULL, len);
 
 	return crypto_ahash_update(ahreq);
 }
 
 static int gcm_hash_remain(struct aead_request *req,
-			   struct crypto_gcm_req_priv_ctx *pctx,
 			   unsigned int remain,
-			   crypto_completion_t complete)
+			   crypto_completion_t compl, u32 flags)
 {
-	struct ahash_request *ahreq = &pctx->u.ahreq;
-
-	ahash_request_set_callback(ahreq, aead_request_flags(req),
-				   complete, req);
-	sg_init_one(pctx->src, gcm_zeroes, remain);
-	ahash_request_set_crypt(ahreq, pctx->src, NULL, remain);
-
-	return crypto_ahash_update(ahreq);
+	return gcm_hash_update(req, compl, &gcm_zeroes->sg, remain, flags);
 }
 
-static int gcm_hash_len(struct aead_request *req,
-			struct crypto_gcm_req_priv_ctx *pctx)
+static int gcm_hash_len(struct aead_request *req, u32 flags)
 {
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct ahash_request *ahreq = &pctx->u.ahreq;
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
-	u128 lengths;
+	be128 lengths;
 
 	lengths.a = cpu_to_be64(req->assoclen * 8);
 	lengths.b = cpu_to_be64(gctx->cryptlen * 8);
 	memcpy(pctx->iauth_tag, &lengths, 16);
-	sg_init_one(pctx->src, pctx->iauth_tag, 16);
-	ahash_request_set_callback(ahreq, aead_request_flags(req),
-				   gcm_hash_len_done, req);
-	ahash_request_set_crypt(ahreq, pctx->src,
-				NULL, sizeof(lengths));
+	sg_init_one(&pctx->sg, pctx->iauth_tag, 16);
+	ahash_request_set_callback(ahreq, flags, gcm_hash_len_done, req);
+	ahash_request_set_crypt(ahreq, &pctx->sg,
+				pctx->iauth_tag, sizeof(lengths));
 
-	return crypto_ahash_update(ahreq);
+	return crypto_ahash_finup(ahreq);
 }
 
-static int gcm_hash_final(struct aead_request *req,
-			  struct crypto_gcm_req_priv_ctx *pctx)
-{
-	struct ahash_request *ahreq = &pctx->u.ahreq;
-
-	ahash_request_set_callback(ahreq, aead_request_flags(req),
-				   gcm_hash_final_done, req);
-	ahash_request_set_crypt(ahreq, NULL, pctx->iauth_tag, 0);
-
-	return crypto_ahash_final(ahreq);
-}
-
-static void __gcm_hash_final_done(struct aead_request *req, int err)
+static int gcm_hash_len_continue(struct aead_request *req, u32 flags)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
 
-	if (!err)
-		crypto_xor(pctx->auth_tag, pctx->iauth_tag, 16);
-
-	gctx->complete(req, err);
+	return gctx->complete(req, flags);
 }
 
-static void gcm_hash_final_done(struct crypto_async_request *areq, int err)
+static void gcm_hash_len_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
-
-	__gcm_hash_final_done(req, err);
-}
+	struct aead_request *req = data;
 
-static void __gcm_hash_len_done(struct aead_request *req, int err)
-{
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	if (err)
+		goto out;
 
-	if (!err) {
-		err = gcm_hash_final(req, pctx);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
+	err = gcm_hash_len_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
 
-	__gcm_hash_final_done(req, err);
+out:
+	aead_request_complete(req, err);
 }
 
-static void gcm_hash_len_done(struct crypto_async_request *areq, int err)
+static int gcm_hash_crypt_remain_continue(struct aead_request *req, u32 flags)
 {
-	struct aead_request *req = areq->data;
-
-	__gcm_hash_len_done(req, err);
+	return gcm_hash_len(req, flags) ?:
+	       gcm_hash_len_continue(req, flags);
 }
 
-static void __gcm_hash_crypt_remain_done(struct aead_request *req, int err)
+static void gcm_hash_crypt_remain_done(void *data, int err)
 {
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	struct aead_request *req = data;
 
-	if (!err) {
-		err = gcm_hash_len(req, pctx);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
-
-	__gcm_hash_len_done(req, err);
-}
+	if (err)
+		goto out;
 
-static void gcm_hash_crypt_remain_done(struct crypto_async_request *areq,
-				       int err)
-{
-	struct aead_request *req = areq->data;
+	err = gcm_hash_crypt_remain_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
 
-	__gcm_hash_crypt_remain_done(req, err);
+out:
+	aead_request_complete(req, err);
 }
 
-static void __gcm_hash_crypt_done(struct aead_request *req, int err)
+static int gcm_hash_crypt_continue(struct aead_request *req, u32 flags)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
 	unsigned int remain;
 
-	if (!err) {
-		remain = gcm_remain(gctx->cryptlen);
-		BUG_ON(!remain);
-		err = gcm_hash_remain(req, pctx, remain,
-				      gcm_hash_crypt_remain_done);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
+	remain = gcm_remain(gctx->cryptlen);
+	if (remain)
+		return gcm_hash_remain(req, remain,
+				       gcm_hash_crypt_remain_done, flags) ?:
+		       gcm_hash_crypt_remain_continue(req, flags);
 
-	__gcm_hash_crypt_remain_done(req, err);
+	return gcm_hash_crypt_remain_continue(req, flags);
 }
 
-static void gcm_hash_crypt_done(struct crypto_async_request *areq, int err)
+static void gcm_hash_crypt_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
+	struct aead_request *req = data;
+
+	if (err)
+		goto out;
 
-	__gcm_hash_crypt_done(req, err);
+	err = gcm_hash_crypt_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
+
+out:
+	aead_request_complete(req, err);
 }
 
-static void __gcm_hash_assoc_remain_done(struct aead_request *req, int err)
+static int gcm_hash_assoc_remain_continue(struct aead_request *req, u32 flags)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
-	crypto_completion_t complete;
-	unsigned int remain = 0;
-
-	if (!err && gctx->cryptlen) {
-		remain = gcm_remain(gctx->cryptlen);
-		complete = remain ? gcm_hash_crypt_done :
-			gcm_hash_crypt_remain_done;
-		err = gcm_hash_update(req, pctx, complete,
-				      gctx->src, gctx->cryptlen);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
 
-	if (remain)
-		__gcm_hash_crypt_done(req, err);
-	else
-		__gcm_hash_crypt_remain_done(req, err);
+	if (gctx->cryptlen)
+		return gcm_hash_update(req, gcm_hash_crypt_done,
+				       gctx->src, gctx->cryptlen, flags) ?:
+		       gcm_hash_crypt_continue(req, flags);
+
+	return gcm_hash_crypt_remain_continue(req, flags);
 }
 
-static void gcm_hash_assoc_remain_done(struct crypto_async_request *areq,
-				       int err)
+static void gcm_hash_assoc_remain_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
+	struct aead_request *req = data;
+
+	if (err)
+		goto out;
+
+	err = gcm_hash_assoc_remain_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
 
-	__gcm_hash_assoc_remain_done(req, err);
+out:
+	aead_request_complete(req, err);
 }
 
-static void __gcm_hash_assoc_done(struct aead_request *req, int err)
+static int gcm_hash_assoc_continue(struct aead_request *req, u32 flags)
 {
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	unsigned int remain;
 
-	if (!err) {
-		remain = gcm_remain(req->assoclen);
-		BUG_ON(!remain);
-		err = gcm_hash_remain(req, pctx, remain,
-				      gcm_hash_assoc_remain_done);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
+	remain = gcm_remain(req->assoclen);
+	if (remain)
+		return gcm_hash_remain(req, remain,
+				       gcm_hash_assoc_remain_done, flags) ?:
+		       gcm_hash_assoc_remain_continue(req, flags);
 
-	__gcm_hash_assoc_remain_done(req, err);
+	return gcm_hash_assoc_remain_continue(req, flags);
 }
 
-static void gcm_hash_assoc_done(struct crypto_async_request *areq, int err)
+static void gcm_hash_assoc_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
+	struct aead_request *req = data;
+
+	if (err)
+		goto out;
+
+	err = gcm_hash_assoc_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
 
-	__gcm_hash_assoc_done(req, err);
+out:
+	aead_request_complete(req, err);
 }
 
-static void __gcm_hash_init_done(struct aead_request *req, int err)
+static int gcm_hash_init_continue(struct aead_request *req, u32 flags)
 {
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
-	crypto_completion_t complete;
-	unsigned int remain = 0;
-
-	if (!err && req->assoclen) {
-		remain = gcm_remain(req->assoclen);
-		complete = remain ? gcm_hash_assoc_done :
-			gcm_hash_assoc_remain_done;
-		err = gcm_hash_update(req, pctx, complete,
-				      req->assoc, req->assoclen);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-	}
+	if (req->assoclen)
+		return gcm_hash_update(req, gcm_hash_assoc_done,
+				       req->src, req->assoclen, flags) ?:
+		       gcm_hash_assoc_continue(req, flags);
 
-	if (remain)
-		__gcm_hash_assoc_done(req, err);
-	else
-		__gcm_hash_assoc_remain_done(req, err);
+	return gcm_hash_assoc_remain_continue(req, flags);
 }
 
-static void gcm_hash_init_done(struct crypto_async_request *areq, int err)
+static void gcm_hash_init_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
+	struct aead_request *req = data;
+
+	if (err)
+		goto out;
 
-	__gcm_hash_init_done(req, err);
+	err = gcm_hash_init_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
+
+out:
+	aead_request_complete(req, err);
 }
 
-static int gcm_hash(struct aead_request *req,
-		    struct crypto_gcm_req_priv_ctx *pctx)
+static int gcm_hash(struct aead_request *req, u32 flags)
 {
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct ahash_request *ahreq = &pctx->u.ahreq;
-	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
-	struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
-	unsigned int remain;
-	crypto_completion_t complete;
-	int err;
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(crypto_aead_reqtfm(req));
 
 	ahash_request_set_tfm(ahreq, ctx->ghash);
 
-	ahash_request_set_callback(ahreq, aead_request_flags(req),
-				   gcm_hash_init_done, req);
-	err = crypto_ahash_init(ahreq);
-	if (err)
-		return err;
-	remain = gcm_remain(req->assoclen);
-	complete = remain ? gcm_hash_assoc_done : gcm_hash_assoc_remain_done;
-	err = gcm_hash_update(req, pctx, complete, req->assoc, req->assoclen);
-	if (err)
-		return err;
-	if (remain) {
-		err = gcm_hash_remain(req, pctx, remain,
-				      gcm_hash_assoc_remain_done);
-		if (err)
-			return err;
-	}
-	remain = gcm_remain(gctx->cryptlen);
-	complete = remain ? gcm_hash_crypt_done : gcm_hash_crypt_remain_done;
-	err = gcm_hash_update(req, pctx, complete, gctx->src, gctx->cryptlen);
-	if (err)
-		return err;
-	if (remain) {
-		err = gcm_hash_remain(req, pctx, remain,
-				      gcm_hash_crypt_remain_done);
-		if (err)
-			return err;
-	}
-	err = gcm_hash_len(req, pctx);
-	if (err)
-		return err;
-	err = gcm_hash_final(req, pctx);
-	if (err)
-		return err;
-
-	return 0;
+	ahash_request_set_callback(ahreq, flags, gcm_hash_init_done, req);
+	return crypto_ahash_init(ahreq) ?:
+	       gcm_hash_init_continue(req, flags);
 }
 
-static void gcm_enc_copy_hash(struct aead_request *req,
-			      struct crypto_gcm_req_priv_ctx *pctx)
+static int gcm_enc_copy_hash(struct aead_request *req, u32 flags)
 {
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
 	u8 *auth_tag = pctx->auth_tag;
 
-	scatterwalk_map_and_copy(auth_tag, req->dst, req->cryptlen,
+	crypto_xor(auth_tag, pctx->iauth_tag, 16);
+	scatterwalk_map_and_copy(auth_tag, req->dst,
+				 req->assoclen + req->cryptlen,
 				 crypto_aead_authsize(aead), 1);
+	return 0;
 }
 
-static void gcm_enc_hash_done(struct aead_request *req, int err)
+static int gcm_encrypt_continue(struct aead_request *req, u32 flags)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
 
-	if (!err)
-		gcm_enc_copy_hash(req, pctx);
+	gctx->src = sg_next(req->src == req->dst ? pctx->src : pctx->dst);
+	gctx->cryptlen = req->cryptlen;
+	gctx->complete = gcm_enc_copy_hash;
 
-	aead_request_complete(req, err);
+	return gcm_hash(req, flags);
 }
 
-static void gcm_encrypt_done(struct crypto_async_request *areq, int err)
+static void gcm_encrypt_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	struct aead_request *req = data;
 
-	if (!err) {
-		err = gcm_hash(req, pctx);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-		else if (!err) {
-			crypto_xor(pctx->auth_tag, pctx->iauth_tag, 16);
-			gcm_enc_copy_hash(req, pctx);
-		}
-	}
+	if (err)
+		goto out;
 
+	err = gcm_encrypt_continue(req, 0);
+	if (err == -EINPROGRESS)
+		return;
+
+out:
 	aead_request_complete(req, err);
 }
 
 static int crypto_gcm_encrypt(struct aead_request *req)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
-	struct ablkcipher_request *abreq = &pctx->u.abreq;
-	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
-	int err;
-
-	crypto_gcm_init_crypt(abreq, req, req->cryptlen);
-	ablkcipher_request_set_callback(abreq, aead_request_flags(req),
-					gcm_encrypt_done, req);
-
-	gctx->src = req->dst;
-	gctx->cryptlen = req->cryptlen;
-	gctx->complete = gcm_enc_hash_done;
-
-	err = crypto_ablkcipher_encrypt(abreq);
-	if (err)
-		return err;
-
-	err = gcm_hash(req, pctx);
-	if (err)
-		return err;
+	struct skcipher_request *skreq = &pctx->u.skreq;
+	u32 flags = aead_request_flags(req);
 
-	crypto_xor(pctx->auth_tag, pctx->iauth_tag, 16);
-	gcm_enc_copy_hash(req, pctx);
+	crypto_gcm_init_common(req);
+	crypto_gcm_init_crypt(req, req->cryptlen);
+	skcipher_request_set_callback(skreq, flags, gcm_encrypt_done, req);
 
-	return 0;
+	return crypto_skcipher_encrypt(skreq) ?:
+	       gcm_encrypt_continue(req, flags);
 }
 
-static int crypto_gcm_verify(struct aead_request *req,
-			     struct crypto_gcm_req_priv_ctx *pctx)
+static int crypto_gcm_verify(struct aead_request *req)
 {
+	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
 	u8 *auth_tag = pctx->auth_tag;
 	u8 *iauth_tag = pctx->iauth_tag;
@@ -581,79 +466,58 @@ static int crypto_gcm_verify(struct aead_request *req,
 	unsigned int cryptlen = req->cryptlen - authsize;
 
 	crypto_xor(auth_tag, iauth_tag, 16);
-	scatterwalk_map_and_copy(iauth_tag, req->src, cryptlen, authsize, 0);
-	return memcmp(iauth_tag, auth_tag, authsize) ? -EBADMSG : 0;
+	scatterwalk_map_and_copy(iauth_tag, req->src,
+				 req->assoclen + cryptlen, authsize, 0);
+	return crypto_memneq(iauth_tag, auth_tag, authsize) ? -EBADMSG : 0;
 }
 
-static void gcm_decrypt_done(struct crypto_async_request *areq, int err)
+static void gcm_decrypt_done(void *data, int err)
 {
-	struct aead_request *req = areq->data;
-	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
+	struct aead_request *req = data;
 
 	if (!err)
-		err = crypto_gcm_verify(req, pctx);
+		err = crypto_gcm_verify(req);
 
 	aead_request_complete(req, err);
 }
 
-static void gcm_dec_hash_done(struct aead_request *req, int err)
+static int gcm_dec_hash_continue(struct aead_request *req, u32 flags)
 {
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
-	struct ablkcipher_request *abreq = &pctx->u.abreq;
+	struct skcipher_request *skreq = &pctx->u.skreq;
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
 
-	if (!err) {
-		ablkcipher_request_set_callback(abreq, aead_request_flags(req),
-						gcm_decrypt_done, req);
-		crypto_gcm_init_crypt(abreq, req, gctx->cryptlen);
-		err = crypto_ablkcipher_decrypt(abreq);
-		if (err == -EINPROGRESS || err == -EBUSY)
-			return;
-		else if (!err)
-			err = crypto_gcm_verify(req, pctx);
-	}
-
-	aead_request_complete(req, err);
+	crypto_gcm_init_crypt(req, gctx->cryptlen);
+	skcipher_request_set_callback(skreq, flags, gcm_decrypt_done, req);
+	return crypto_skcipher_decrypt(skreq) ?: crypto_gcm_verify(req);
 }
 
 static int crypto_gcm_decrypt(struct aead_request *req)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
 	struct crypto_gcm_req_priv_ctx *pctx = crypto_gcm_reqctx(req);
-	struct ablkcipher_request *abreq = &pctx->u.abreq;
 	struct crypto_gcm_ghash_ctx *gctx = &pctx->ghash_ctx;
 	unsigned int authsize = crypto_aead_authsize(aead);
 	unsigned int cryptlen = req->cryptlen;
-	int err;
+	u32 flags = aead_request_flags(req);
 
-	if (cryptlen < authsize)
-		return -EINVAL;
 	cryptlen -= authsize;
 
-	gctx->src = req->src;
-	gctx->cryptlen = cryptlen;
-	gctx->complete = gcm_dec_hash_done;
+	crypto_gcm_init_common(req);
 
-	err = gcm_hash(req, pctx);
-	if (err)
-		return err;
-
-	ablkcipher_request_set_callback(abreq, aead_request_flags(req),
-					gcm_decrypt_done, req);
-	crypto_gcm_init_crypt(abreq, req, cryptlen);
-	err = crypto_ablkcipher_decrypt(abreq);
-	if (err)
-		return err;
+	gctx->src = sg_next(pctx->src);
+	gctx->cryptlen = cryptlen;
+	gctx->complete = gcm_dec_hash_continue;
 
-	return crypto_gcm_verify(req, pctx);
+	return gcm_hash(req, flags);
 }
 
-static int crypto_gcm_init_tfm(struct crypto_tfm *tfm)
+static int crypto_gcm_init_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_instance *inst = (void *)tfm->__crt_alg;
-	struct gcm_instance_ctx *ictx = crypto_instance_ctx(inst);
-	struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
-	struct crypto_ablkcipher *ctr;
+	struct aead_instance *inst = aead_alg_instance(tfm);
+	struct gcm_instance_ctx *ictx = aead_instance_ctx(inst);
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(tfm);
+	struct crypto_skcipher *ctr;
 	struct crypto_ahash *ghash;
 	unsigned long align;
 	int err;
@@ -670,14 +534,14 @@ static int crypto_gcm_init_tfm(struct crypto_tfm *tfm)
 	ctx->ctr = ctr;
 	ctx->ghash = ghash;
 
-	align = crypto_tfm_alg_alignmask(tfm);
+	align = crypto_aead_alignmask(tfm);
 	align &= ~(crypto_tfm_ctx_alignment() - 1);
-	tfm->crt_aead.reqsize = align +
-		offsetof(struct crypto_gcm_req_priv_ctx, u) +
-		max(sizeof(struct ablkcipher_request) +
-		    crypto_ablkcipher_reqsize(ctr),
+	crypto_aead_set_reqsize(tfm,
+		align + offsetof(struct crypto_gcm_req_priv_ctx, u) +
+		max(sizeof(struct skcipher_request) +
+		    crypto_skcipher_reqsize(ctr),
 		    sizeof(struct ahash_request) +
-		    crypto_ahash_reqsize(ghash));
+		    crypto_ahash_reqsize(ghash)));
 
 	return 0;
 
@@ -686,181 +550,141 @@ err_free_hash:
 	return err;
 }
 
-static void crypto_gcm_exit_tfm(struct crypto_tfm *tfm)
+static void crypto_gcm_exit_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_gcm_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_gcm_ctx *ctx = crypto_aead_ctx(tfm);
 
 	crypto_free_ahash(ctx->ghash);
-	crypto_free_ablkcipher(ctx->ctr);
+	crypto_free_skcipher(ctx->ctr);
 }
 
-static struct crypto_instance *crypto_gcm_alloc_common(struct rtattr **tb,
-						       const char *full_name,
-						       const char *ctr_name,
-						       const char *ghash_name)
+static void crypto_gcm_free(struct aead_instance *inst)
 {
-	struct crypto_attr_type *algt;
-	struct crypto_instance *inst;
-	struct crypto_alg *ctr;
-	struct crypto_alg *ghash_alg;
-	struct ahash_alg *ghash_ahash_alg;
-	struct gcm_instance_ctx *ctx;
-	int err;
+	struct gcm_instance_ctx *ctx = aead_instance_ctx(inst);
 
-	algt = crypto_get_attr_type(tb);
-	if (IS_ERR(algt))
-		return ERR_CAST(algt);
+	crypto_drop_skcipher(&ctx->ctr);
+	crypto_drop_ahash(&ctx->ghash);
+	kfree(inst);
+}
 
-	if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-		return ERR_PTR(-EINVAL);
+static int crypto_gcm_create_common(struct crypto_template *tmpl,
+				    struct rtattr **tb,
+				    const char *ctr_name,
+				    const char *ghash_name)
+{
+	struct skcipher_alg_common *ctr;
+	u32 mask;
+	struct aead_instance *inst;
+	struct gcm_instance_ctx *ctx;
+	struct hash_alg_common *ghash;
+	int err;
 
-	ghash_alg = crypto_find_alg(ghash_name, &crypto_ahash_type,
-				    CRYPTO_ALG_TYPE_HASH,
-				    CRYPTO_ALG_TYPE_AHASH_MASK);
-	if (IS_ERR(ghash_alg))
-		return ERR_CAST(ghash_alg);
+	err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+	if (err)
+		return err;
 
-	err = -ENOMEM;
 	inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
 	if (!inst)
-		goto out_put_ghash;
+		return -ENOMEM;
+	ctx = aead_instance_ctx(inst);
 
-	ctx = crypto_instance_ctx(inst);
-	ghash_ahash_alg = container_of(ghash_alg, struct ahash_alg, halg.base);
-	err = crypto_init_ahash_spawn(&ctx->ghash, &ghash_ahash_alg->halg,
-				      inst);
+	err = crypto_grab_ahash(&ctx->ghash, aead_crypto_instance(inst),
+				ghash_name, 0, mask);
 	if (err)
 		goto err_free_inst;
+	ghash = crypto_spawn_ahash_alg(&ctx->ghash);
 
-	crypto_set_skcipher_spawn(&ctx->ctr, inst);
-	err = crypto_grab_skcipher(&ctx->ctr, ctr_name, 0,
-				   crypto_requires_sync(algt->type,
-							algt->mask));
-	if (err)
-		goto err_drop_ghash;
-
-	ctr = crypto_skcipher_spawn_alg(&ctx->ctr);
+	err = -EINVAL;
+	if (strcmp(ghash->base.cra_name, "ghash") != 0 ||
+	    ghash->digestsize != 16)
+		goto err_free_inst;
 
-	/* We only support 16-byte blocks. */
-	if (ctr->cra_ablkcipher.ivsize != 16)
-		goto out_put_ctr;
+	err = crypto_grab_skcipher(&ctx->ctr, aead_crypto_instance(inst),
+				   ctr_name, 0, mask);
+	if (err)
+		goto err_free_inst;
+	ctr = crypto_spawn_skcipher_alg_common(&ctx->ctr);
 
-	/* Not a stream cipher? */
+	/* The skcipher algorithm must be CTR mode, using 16-byte blocks. */
 	err = -EINVAL;
-	if (ctr->cra_blocksize != 1)
-		goto out_put_ctr;
+	if (strncmp(ctr->base.cra_name, "ctr(", 4) != 0 ||
+	    ctr->ivsize != 16 || ctr->base.cra_blocksize != 1)
+		goto err_free_inst;
 
 	err = -ENAMETOOLONG;
-	if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
-		     "gcm_base(%s,%s)", ctr->cra_driver_name,
-		     ghash_alg->cra_driver_name) >=
-	    CRYPTO_MAX_ALG_NAME)
-		goto out_put_ctr;
-
-	memcpy(inst->alg.cra_name, full_name, CRYPTO_MAX_ALG_NAME);
-
-	inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD;
-	inst->alg.cra_flags |= ctr->cra_flags & CRYPTO_ALG_ASYNC;
-	inst->alg.cra_priority = ctr->cra_priority;
-	inst->alg.cra_blocksize = 1;
-	inst->alg.cra_alignmask = ctr->cra_alignmask | (__alignof__(u64) - 1);
-	inst->alg.cra_type = &crypto_aead_type;
-	inst->alg.cra_aead.ivsize = 16;
-	inst->alg.cra_aead.maxauthsize = 16;
-	inst->alg.cra_ctxsize = sizeof(struct crypto_gcm_ctx);
-	inst->alg.cra_init = crypto_gcm_init_tfm;
-	inst->alg.cra_exit = crypto_gcm_exit_tfm;
-	inst->alg.cra_aead.setkey = crypto_gcm_setkey;
-	inst->alg.cra_aead.setauthsize = crypto_gcm_setauthsize;
-	inst->alg.cra_aead.encrypt = crypto_gcm_encrypt;
-	inst->alg.cra_aead.decrypt = crypto_gcm_decrypt;
+	if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
+		     "gcm(%s", ctr->base.cra_name + 4) >= CRYPTO_MAX_ALG_NAME)
+		goto err_free_inst;
 
-out:
-	crypto_mod_put(ghash_alg);
-	return inst;
+	if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
+		     "gcm_base(%s,%s)", ctr->base.cra_driver_name,
+		     ghash->base.cra_driver_name) >=
+	    CRYPTO_MAX_ALG_NAME)
+		goto err_free_inst;
 
-out_put_ctr:
-	crypto_drop_skcipher(&ctx->ctr);
-err_drop_ghash:
-	crypto_drop_ahash(&ctx->ghash);
+	inst->alg.base.cra_priority = (ghash->base.cra_priority +
+				       ctr->base.cra_priority) / 2;
+	inst->alg.base.cra_blocksize = 1;
+	inst->alg.base.cra_alignmask = ctr->base.cra_alignmask;
+	inst->alg.base.cra_ctxsize = sizeof(struct crypto_gcm_ctx);
+	inst->alg.ivsize = GCM_AES_IV_SIZE;
+	inst->alg.chunksize = ctr->chunksize;
+	inst->alg.maxauthsize = 16;
+	inst->alg.init = crypto_gcm_init_tfm;
+	inst->alg.exit = crypto_gcm_exit_tfm;
+	inst->alg.setkey = crypto_gcm_setkey;
+	inst->alg.setauthsize = crypto_gcm_setauthsize;
+	inst->alg.encrypt = crypto_gcm_encrypt;
+	inst->alg.decrypt = crypto_gcm_decrypt;
+
+	inst->free = crypto_gcm_free;
+
+	err = aead_register_instance(tmpl, inst);
+	if (err) {
 err_free_inst:
-	kfree(inst);
-out_put_ghash:
-	inst = ERR_PTR(err);
-	goto out;
+		crypto_gcm_free(inst);
+	}
+	return err;
 }
 
-static struct crypto_instance *crypto_gcm_alloc(struct rtattr **tb)
+static int crypto_gcm_create(struct crypto_template *tmpl, struct rtattr **tb)
 {
 	const char *cipher_name;
 	char ctr_name[CRYPTO_MAX_ALG_NAME];
-	char full_name[CRYPTO_MAX_ALG_NAME];
 
 	cipher_name = crypto_attr_alg_name(tb[1]);
 	if (IS_ERR(cipher_name))
-		return ERR_CAST(cipher_name);
+		return PTR_ERR(cipher_name);
 
 	if (snprintf(ctr_name, CRYPTO_MAX_ALG_NAME, "ctr(%s)", cipher_name) >=
 	    CRYPTO_MAX_ALG_NAME)
-		return ERR_PTR(-ENAMETOOLONG);
+		return -ENAMETOOLONG;
 
-	if (snprintf(full_name, CRYPTO_MAX_ALG_NAME, "gcm(%s)", cipher_name) >=
-	    CRYPTO_MAX_ALG_NAME)
-		return ERR_PTR(-ENAMETOOLONG);
-
-	return crypto_gcm_alloc_common(tb, full_name, ctr_name, "ghash");
-}
-
-static void crypto_gcm_free(struct crypto_instance *inst)
-{
-	struct gcm_instance_ctx *ctx = crypto_instance_ctx(inst);
-
-	crypto_drop_skcipher(&ctx->ctr);
-	crypto_drop_ahash(&ctx->ghash);
-	kfree(inst);
+	return crypto_gcm_create_common(tmpl, tb, ctr_name, "ghash");
 }
 
-static struct crypto_template crypto_gcm_tmpl = {
-	.name = "gcm",
-	.alloc = crypto_gcm_alloc,
-	.free = crypto_gcm_free,
-	.module = THIS_MODULE,
-};
-
-static struct crypto_instance *crypto_gcm_base_alloc(struct rtattr **tb)
+static int crypto_gcm_base_create(struct crypto_template *tmpl,
+				  struct rtattr **tb)
 {
 	const char *ctr_name;
 	const char *ghash_name;
-	char full_name[CRYPTO_MAX_ALG_NAME];
 
 	ctr_name = crypto_attr_alg_name(tb[1]);
 	if (IS_ERR(ctr_name))
-		return ERR_CAST(ctr_name);
+		return PTR_ERR(ctr_name);
 
 	ghash_name = crypto_attr_alg_name(tb[2]);
 	if (IS_ERR(ghash_name))
-		return ERR_CAST(ghash_name);
-
-	if (snprintf(full_name, CRYPTO_MAX_ALG_NAME, "gcm_base(%s,%s)",
-		     ctr_name, ghash_name) >= CRYPTO_MAX_ALG_NAME)
-		return ERR_PTR(-ENAMETOOLONG);
+		return PTR_ERR(ghash_name);
 
-	return crypto_gcm_alloc_common(tb, full_name, ctr_name, ghash_name);
+	return crypto_gcm_create_common(tmpl, tb, ctr_name, ghash_name);
 }
 
-static struct crypto_template crypto_gcm_base_tmpl = {
-	.name = "gcm_base",
-	.alloc = crypto_gcm_base_alloc,
-	.free = crypto_gcm_free,
-	.module = THIS_MODULE,
-};
-
 static int crypto_rfc4106_setkey(struct crypto_aead *parent, const u8 *key,
 				 unsigned int keylen)
 {
 	struct crypto_rfc4106_ctx *ctx = crypto_aead_ctx(parent);
 	struct crypto_aead *child = ctx->child;
-	int err;
 
 	if (keylen < 4)
 		return -EINVAL;
@@ -871,53 +695,71 @@ static int crypto_rfc4106_setkey(struct crypto_aead *parent, const u8 *key,
 	crypto_aead_clear_flags(child, CRYPTO_TFM_REQ_MASK);
 	crypto_aead_set_flags(child, crypto_aead_get_flags(parent) &
 				     CRYPTO_TFM_REQ_MASK);
-	err = crypto_aead_setkey(child, key, keylen);
-	crypto_aead_set_flags(parent, crypto_aead_get_flags(child) &
-				      CRYPTO_TFM_RES_MASK);
-
-	return err;
+	return crypto_aead_setkey(child, key, keylen);
 }
 
 static int crypto_rfc4106_setauthsize(struct crypto_aead *parent,
 				      unsigned int authsize)
 {
 	struct crypto_rfc4106_ctx *ctx = crypto_aead_ctx(parent);
+	int err;
 
-	switch (authsize) {
-	case 8:
-	case 12:
-	case 16:
-		break;
-	default:
-		return -EINVAL;
-	}
+	err = crypto_rfc4106_check_authsize(authsize);
+	if (err)
+		return err;
 
 	return crypto_aead_setauthsize(ctx->child, authsize);
 }
 
 static struct aead_request *crypto_rfc4106_crypt(struct aead_request *req)
 {
-	struct aead_request *subreq = aead_request_ctx(req);
+	struct crypto_rfc4106_req_ctx *rctx = aead_request_ctx(req);
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
 	struct crypto_rfc4106_ctx *ctx = crypto_aead_ctx(aead);
+	struct aead_request *subreq = &rctx->subreq;
 	struct crypto_aead *child = ctx->child;
+	struct scatterlist *sg;
 	u8 *iv = PTR_ALIGN((u8 *)(subreq + 1) + crypto_aead_reqsize(child),
 			   crypto_aead_alignmask(child) + 1);
 
+	scatterwalk_map_and_copy(iv + GCM_AES_IV_SIZE, req->src, 0, req->assoclen - 8, 0);
+
 	memcpy(iv, ctx->nonce, 4);
 	memcpy(iv + 4, req->iv, 8);
 
+	sg_init_table(rctx->src, 3);
+	sg_set_buf(rctx->src, iv + GCM_AES_IV_SIZE, req->assoclen - 8);
+	sg = scatterwalk_ffwd(rctx->src + 1, req->src, req->assoclen);
+	if (sg != rctx->src + 1)
+		sg_chain(rctx->src, 2, sg);
+
+	if (req->src != req->dst) {
+		sg_init_table(rctx->dst, 3);
+		sg_set_buf(rctx->dst, iv + GCM_AES_IV_SIZE, req->assoclen - 8);
+		sg = scatterwalk_ffwd(rctx->dst + 1, req->dst, req->assoclen);
+		if (sg != rctx->dst + 1)
+			sg_chain(rctx->dst, 2, sg);
+	}
+
 	aead_request_set_tfm(subreq, child);
 	aead_request_set_callback(subreq, req->base.flags, req->base.complete,
 				  req->base.data);
-	aead_request_set_crypt(subreq, req->src, req->dst, req->cryptlen, iv);
-	aead_request_set_assoc(subreq, req->assoc, req->assoclen);
+	aead_request_set_crypt(subreq, rctx->src,
+			       req->src == req->dst ? rctx->src : rctx->dst,
+			       req->cryptlen, iv);
+	aead_request_set_ad(subreq, req->assoclen - 8);
 
 	return subreq;
 }
 
 static int crypto_rfc4106_encrypt(struct aead_request *req)
 {
+	int err;
+
+	err = crypto_ipsec_check_assoclen(req->assoclen);
+	if (err)
+		return err;
+
 	req = crypto_rfc4106_crypt(req);
 
 	return crypto_aead_encrypt(req);
@@ -925,16 +767,22 @@ static int crypto_rfc4106_encrypt(struct aead_request *req)
 
 static int crypto_rfc4106_decrypt(struct aead_request *req)
 {
+	int err;
+
+	err = crypto_ipsec_check_assoclen(req->assoclen);
+	if (err)
+		return err;
+
 	req = crypto_rfc4106_crypt(req);
 
 	return crypto_aead_decrypt(req);
 }
 
-static int crypto_rfc4106_init_tfm(struct crypto_tfm *tfm)
+static int crypto_rfc4106_init_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_instance *inst = (void *)tfm->__crt_alg;
-	struct crypto_aead_spawn *spawn = crypto_instance_ctx(inst);
-	struct crypto_rfc4106_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct aead_instance *inst = aead_alg_instance(tfm);
+	struct crypto_aead_spawn *spawn = aead_instance_ctx(inst);
+	struct crypto_rfc4106_ctx *ctx = crypto_aead_ctx(tfm);
 	struct crypto_aead *aead;
 	unsigned long align;
 
@@ -946,124 +794,98 @@ static int crypto_rfc4106_init_tfm(struct crypto_tfm *tfm)
 
 	align = crypto_aead_alignmask(aead);
 	align &= ~(crypto_tfm_ctx_alignment() - 1);
-	tfm->crt_aead.reqsize = sizeof(struct aead_request) +
-				ALIGN(crypto_aead_reqsize(aead),
-				      crypto_tfm_ctx_alignment()) +
-				align + 16;
+	crypto_aead_set_reqsize(
+		tfm,
+		sizeof(struct crypto_rfc4106_req_ctx) +
+		ALIGN(crypto_aead_reqsize(aead), crypto_tfm_ctx_alignment()) +
+		align + 24);
 
 	return 0;
 }
 
-static void crypto_rfc4106_exit_tfm(struct crypto_tfm *tfm)
+static void crypto_rfc4106_exit_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_rfc4106_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_rfc4106_ctx *ctx = crypto_aead_ctx(tfm);
 
 	crypto_free_aead(ctx->child);
 }
 
-static struct crypto_instance *crypto_rfc4106_alloc(struct rtattr **tb)
+static void crypto_rfc4106_free(struct aead_instance *inst)
 {
-	struct crypto_attr_type *algt;
-	struct crypto_instance *inst;
+	crypto_drop_aead(aead_instance_ctx(inst));
+	kfree(inst);
+}
+
+static int crypto_rfc4106_create(struct crypto_template *tmpl,
+				 struct rtattr **tb)
+{
+	u32 mask;
+	struct aead_instance *inst;
 	struct crypto_aead_spawn *spawn;
-	struct crypto_alg *alg;
-	const char *ccm_name;
+	struct aead_alg *alg;
 	int err;
 
-	algt = crypto_get_attr_type(tb);
-	if (IS_ERR(algt))
-		return ERR_CAST(algt);
-
-	if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-		return ERR_PTR(-EINVAL);
-
-	ccm_name = crypto_attr_alg_name(tb[1]);
-	if (IS_ERR(ccm_name))
-		return ERR_CAST(ccm_name);
+	err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
+	if (err)
+		return err;
 
 	inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL);
 	if (!inst)
-		return ERR_PTR(-ENOMEM);
+		return -ENOMEM;
 
-	spawn = crypto_instance_ctx(inst);
-	crypto_set_aead_spawn(spawn, inst);
-	err = crypto_grab_aead(spawn, ccm_name, 0,
-			       crypto_requires_sync(algt->type, algt->mask));
+	spawn = aead_instance_ctx(inst);
+	err = crypto_grab_aead(spawn, aead_crypto_instance(inst),
+			       crypto_attr_alg_name(tb[1]), 0, mask);
 	if (err)
-		goto out_free_inst;
+		goto err_free_inst;
 
-	alg = crypto_aead_spawn_alg(spawn);
+	alg = crypto_spawn_aead_alg(spawn);
 
 	err = -EINVAL;
 
-	/* We only support 16-byte blocks. */
-	if (alg->cra_aead.ivsize != 16)
-		goto out_drop_alg;
+	/* Underlying IV size must be 12. */
+	if (crypto_aead_alg_ivsize(alg) != GCM_AES_IV_SIZE)
+		goto err_free_inst;
 
 	/* Not a stream cipher? */
-	if (alg->cra_blocksize != 1)
-		goto out_drop_alg;
+	if (alg->base.cra_blocksize != 1)
+		goto err_free_inst;
 
 	err = -ENAMETOOLONG;
-	if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME,
-		     "rfc4106(%s)", alg->cra_name) >= CRYPTO_MAX_ALG_NAME ||
-	    snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
-		     "rfc4106(%s)", alg->cra_driver_name) >=
+	if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
+		     "rfc4106(%s)", alg->base.cra_name) >=
+	    CRYPTO_MAX_ALG_NAME ||
+	    snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
+		     "rfc4106(%s)", alg->base.cra_driver_name) >=
 	    CRYPTO_MAX_ALG_NAME)
-		goto out_drop_alg;
-
-	inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD;
-	inst->alg.cra_flags |= alg->cra_flags & CRYPTO_ALG_ASYNC;
-	inst->alg.cra_priority = alg->cra_priority;
-	inst->alg.cra_blocksize = 1;
-	inst->alg.cra_alignmask = alg->cra_alignmask;
-	inst->alg.cra_type = &crypto_nivaead_type;
-
-	inst->alg.cra_aead.ivsize = 8;
-	inst->alg.cra_aead.maxauthsize = 16;
+		goto err_free_inst;
 
-	inst->alg.cra_ctxsize = sizeof(struct crypto_rfc4106_ctx);
+	inst->alg.base.cra_priority = alg->base.cra_priority;
+	inst->alg.base.cra_blocksize = 1;
+	inst->alg.base.cra_alignmask = alg->base.cra_alignmask;
 
-	inst->alg.cra_init = crypto_rfc4106_init_tfm;
-	inst->alg.cra_exit = crypto_rfc4106_exit_tfm;
+	inst->alg.base.cra_ctxsize = sizeof(struct crypto_rfc4106_ctx);
 
-	inst->alg.cra_aead.setkey = crypto_rfc4106_setkey;
-	inst->alg.cra_aead.setauthsize = crypto_rfc4106_setauthsize;
-	inst->alg.cra_aead.encrypt = crypto_rfc4106_encrypt;
-	inst->alg.cra_aead.decrypt = crypto_rfc4106_decrypt;
+	inst->alg.ivsize = GCM_RFC4106_IV_SIZE;
+	inst->alg.chunksize = crypto_aead_alg_chunksize(alg);
+	inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg);
 
-	inst->alg.cra_aead.geniv = "seqiv";
+	inst->alg.init = crypto_rfc4106_init_tfm;
+	inst->alg.exit = crypto_rfc4106_exit_tfm;
 
-out:
-	return inst;
+	inst->alg.setkey = crypto_rfc4106_setkey;
+	inst->alg.setauthsize = crypto_rfc4106_setauthsize;
+	inst->alg.encrypt = crypto_rfc4106_encrypt;
+	inst->alg.decrypt = crypto_rfc4106_decrypt;
 
-out_drop_alg:
-	crypto_drop_aead(spawn);
-out_free_inst:
-	kfree(inst);
-	inst = ERR_PTR(err);
-	goto out;
-}
+	inst->free = crypto_rfc4106_free;
 
-static void crypto_rfc4106_free(struct crypto_instance *inst)
-{
-	crypto_drop_spawn(crypto_instance_ctx(inst));
-	kfree(inst);
-}
-
-static struct crypto_template crypto_rfc4106_tmpl = {
-	.name = "rfc4106",
-	.alloc = crypto_rfc4106_alloc,
-	.free = crypto_rfc4106_free,
-	.module = THIS_MODULE,
-};
-
-static inline struct crypto_rfc4543_req_ctx *crypto_rfc4543_reqctx(
-	struct aead_request *req)
-{
-	unsigned long align = crypto_aead_alignmask(crypto_aead_reqtfm(req));
-
-	return (void *)PTR_ALIGN((u8 *)aead_request_ctx(req), align + 1);
+	err = aead_register_instance(tmpl, inst);
+	if (err) {
+err_free_inst:
+		crypto_rfc4106_free(inst);
+	}
+	return err;
 }
 
 static int crypto_rfc4543_setkey(struct crypto_aead *parent, const u8 *key,
@@ -1071,7 +893,6 @@ static int crypto_rfc4543_setkey(struct crypto_aead *parent, const u8 *key,
 {
 	struct crypto_rfc4543_ctx *ctx = crypto_aead_ctx(parent);
 	struct crypto_aead *child = ctx->child;
-	int err;
 
 	if (keylen < 4)
 		return -EINVAL;
@@ -1082,11 +903,7 @@ static int crypto_rfc4543_setkey(struct crypto_aead *parent, const u8 *key,
 	crypto_aead_clear_flags(child, CRYPTO_TFM_REQ_MASK);
 	crypto_aead_set_flags(child, crypto_aead_get_flags(parent) &
 				     CRYPTO_TFM_REQ_MASK);
-	err = crypto_aead_setkey(child, key, keylen);
-	crypto_aead_set_flags(parent, crypto_aead_get_flags(child) &
-				      CRYPTO_TFM_RES_MASK);
-
-	return err;
+	return crypto_aead_setkey(child, key, keylen);
 }
 
 static int crypto_rfc4543_setauthsize(struct crypto_aead *parent,
@@ -1100,339 +917,206 @@ static int crypto_rfc4543_setauthsize(struct crypto_aead *parent,
 	return crypto_aead_setauthsize(ctx->child, authsize);
 }
 
-static void crypto_rfc4543_done(struct crypto_async_request *areq, int err)
-{
-	struct aead_request *req = areq->data;
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct crypto_rfc4543_req_ctx *rctx = crypto_rfc4543_reqctx(req);
-
-	if (!err) {
-		scatterwalk_map_and_copy(rctx->auth_tag, req->dst,
-					 req->cryptlen,
-					 crypto_aead_authsize(aead), 1);
-	}
-
-	aead_request_complete(req, err);
-}
-
-static struct aead_request *crypto_rfc4543_crypt(struct aead_request *req,
-						 bool enc)
+static int crypto_rfc4543_crypt(struct aead_request *req, bool enc)
 {
 	struct crypto_aead *aead = crypto_aead_reqtfm(req);
 	struct crypto_rfc4543_ctx *ctx = crypto_aead_ctx(aead);
-	struct crypto_rfc4543_req_ctx *rctx = crypto_rfc4543_reqctx(req);
+	struct crypto_rfc4543_req_ctx *rctx = aead_request_ctx(req);
 	struct aead_request *subreq = &rctx->subreq;
-	struct scatterlist *src = req->src;
-	struct scatterlist *cipher = rctx->cipher;
-	struct scatterlist *payload = rctx->payload;
-	struct scatterlist *assoc = rctx->assoc;
 	unsigned int authsize = crypto_aead_authsize(aead);
-	unsigned int assoclen = req->assoclen;
-	struct page *srcp;
-	u8 *vsrc;
 	u8 *iv = PTR_ALIGN((u8 *)(rctx + 1) + crypto_aead_reqsize(ctx->child),
 			   crypto_aead_alignmask(ctx->child) + 1);
 
-	memcpy(iv, ctx->nonce, 4);
-	memcpy(iv + 4, req->iv, 8);
+	if (req->src != req->dst) {
+		unsigned int nbytes = req->assoclen + req->cryptlen -
+				      (enc ? 0 : authsize);
 
-	/* construct cipher/plaintext */
-	if (enc)
-		memset(rctx->auth_tag, 0, authsize);
-	else
-		scatterwalk_map_and_copy(rctx->auth_tag, src,
-					 req->cryptlen - authsize,
-					 authsize, 0);
-
-	sg_init_one(cipher, rctx->auth_tag, authsize);
-
-	/* construct the aad */
-	srcp = sg_page(src);
-	vsrc = PageHighMem(srcp) ? NULL : page_address(srcp) + src->offset;
-
-	sg_init_table(payload, 2);
-	sg_set_buf(payload, req->iv, 8);
-	scatterwalk_crypto_chain(payload, src, vsrc == req->iv + 8, 2);
-	assoclen += 8 + req->cryptlen - (enc ? 0 : authsize);
-
-	if (req->assoc->length == req->assoclen) {
-		sg_init_table(assoc, 2);
-		sg_set_page(assoc, sg_page(req->assoc), req->assoc->length,
-			    req->assoc->offset);
-	} else {
-		BUG_ON(req->assoclen > sizeof(rctx->assocbuf));
-
-		scatterwalk_map_and_copy(rctx->assocbuf, req->assoc, 0,
-					 req->assoclen, 0);
-
-		sg_init_table(assoc, 2);
-		sg_set_buf(assoc, rctx->assocbuf, req->assoclen);
+		memcpy_sglist(req->dst, req->src, nbytes);
 	}
-	scatterwalk_crypto_chain(assoc, payload, 0, 2);
 
-	aead_request_set_tfm(subreq, ctx->child);
-	aead_request_set_callback(subreq, req->base.flags, crypto_rfc4543_done,
-				  req);
-	aead_request_set_crypt(subreq, cipher, cipher, enc ? 0 : authsize, iv);
-	aead_request_set_assoc(subreq, assoc, assoclen);
-
-	return subreq;
-}
-
-static int crypto_rfc4543_copy_src_to_dst(struct aead_request *req, bool enc)
-{
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct crypto_rfc4543_ctx *ctx = crypto_aead_ctx(aead);
-	unsigned int authsize = crypto_aead_authsize(aead);
-	unsigned int nbytes = req->cryptlen - (enc ? 0 : authsize);
-	struct blkcipher_desc desc = {
-		.tfm = ctx->null,
-	};
+	memcpy(iv, ctx->nonce, 4);
+	memcpy(iv + 4, req->iv, 8);
 
-	return crypto_blkcipher_encrypt(&desc, req->dst, req->src, nbytes);
+	aead_request_set_tfm(subreq, ctx->child);
+	aead_request_set_callback(subreq, req->base.flags,
+				  req->base.complete, req->base.data);
+	aead_request_set_crypt(subreq, req->src, req->dst,
+			       enc ? 0 : authsize, iv);
+	aead_request_set_ad(subreq, req->assoclen + req->cryptlen -
+				    subreq->cryptlen);
+
+	return enc ? crypto_aead_encrypt(subreq) : crypto_aead_decrypt(subreq);
 }
 
 static int crypto_rfc4543_encrypt(struct aead_request *req)
 {
-	struct crypto_aead *aead = crypto_aead_reqtfm(req);
-	struct crypto_rfc4543_req_ctx *rctx = crypto_rfc4543_reqctx(req);
-	struct aead_request *subreq;
-	int err;
-
-	if (req->src != req->dst) {
-		err = crypto_rfc4543_copy_src_to_dst(req, true);
-		if (err)
-			return err;
-	}
-
-	subreq = crypto_rfc4543_crypt(req, true);
-	err = crypto_aead_encrypt(subreq);
-	if (err)
-		return err;
-
-	scatterwalk_map_and_copy(rctx->auth_tag, req->dst, req->cryptlen,
-				 crypto_aead_authsize(aead), 1);
-
-	return 0;
+	return crypto_ipsec_check_assoclen(req->assoclen) ?:
+	       crypto_rfc4543_crypt(req, true);
 }
 
 static int crypto_rfc4543_decrypt(struct aead_request *req)
 {
-	int err;
-
-	if (req->src != req->dst) {
-		err = crypto_rfc4543_copy_src_to_dst(req, false);
-		if (err)
-			return err;
-	}
-
-	req = crypto_rfc4543_crypt(req, false);
-
-	return crypto_aead_decrypt(req);
+	return crypto_ipsec_check_assoclen(req->assoclen) ?:
+	       crypto_rfc4543_crypt(req, false);
 }
 
-static int crypto_rfc4543_init_tfm(struct crypto_tfm *tfm)
+static int crypto_rfc4543_init_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_instance *inst = (void *)tfm->__crt_alg;
-	struct crypto_rfc4543_instance_ctx *ictx = crypto_instance_ctx(inst);
+	struct aead_instance *inst = aead_alg_instance(tfm);
+	struct crypto_rfc4543_instance_ctx *ictx = aead_instance_ctx(inst);
 	struct crypto_aead_spawn *spawn = &ictx->aead;
-	struct crypto_rfc4543_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_rfc4543_ctx *ctx = crypto_aead_ctx(tfm);
 	struct crypto_aead *aead;
-	struct crypto_blkcipher *null;
 	unsigned long align;
-	int err = 0;
 
 	aead = crypto_spawn_aead(spawn);
 	if (IS_ERR(aead))
 		return PTR_ERR(aead);
 
-	null = crypto_spawn_blkcipher(&ictx->null.base);
-	err = PTR_ERR(null);
-	if (IS_ERR(null))
-		goto err_free_aead;
-
 	ctx->child = aead;
-	ctx->null = null;
 
 	align = crypto_aead_alignmask(aead);
 	align &= ~(crypto_tfm_ctx_alignment() - 1);
-	tfm->crt_aead.reqsize = sizeof(struct crypto_rfc4543_req_ctx) +
-				ALIGN(crypto_aead_reqsize(aead),
-				      crypto_tfm_ctx_alignment()) +
-				align + 16;
+	crypto_aead_set_reqsize(
+		tfm,
+		sizeof(struct crypto_rfc4543_req_ctx) +
+		ALIGN(crypto_aead_reqsize(aead), crypto_tfm_ctx_alignment()) +
+		align + GCM_AES_IV_SIZE);
 
 	return 0;
-
-err_free_aead:
-	crypto_free_aead(aead);
-	return err;
 }
 
-static void crypto_rfc4543_exit_tfm(struct crypto_tfm *tfm)
+static void crypto_rfc4543_exit_tfm(struct crypto_aead *tfm)
 {
-	struct crypto_rfc4543_ctx *ctx = crypto_tfm_ctx(tfm);
+	struct crypto_rfc4543_ctx *ctx = crypto_aead_ctx(tfm);
 
 	crypto_free_aead(ctx->child);
-	crypto_free_blkcipher(ctx->null);
 }
 
-static struct crypto_instance *crypto_rfc4543_alloc(struct rtattr **tb)
+static void crypto_rfc4543_free(struct aead_instance *inst)
 {
-	struct crypto_attr_type *algt;
-	struct crypto_instance *inst;
-	struct crypto_aead_spawn *spawn;
-	struct crypto_alg *alg;
-	struct crypto_rfc4543_instance_ctx *ctx;
-	const char *ccm_name;
-	int err;
+	struct crypto_rfc4543_instance_ctx *ctx = aead_instance_ctx(inst);
 
-	algt = crypto_get_attr_type(tb);
-	if (IS_ERR(algt))
-		return ERR_CAST(algt);
-
-	if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask)
-		return ERR_PTR(-EINVAL);
+	crypto_drop_aead(&ctx->aead);
 
-	ccm_name = crypto_attr_alg_name(tb[1]);
-	if (IS_ERR(ccm_name))
-		return ERR_CAST(ccm_name);
+	kfree(inst);
+}
 
-	inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
-	if (!inst)
-		return ERR_PTR(-ENOMEM);
+static int crypto_rfc4543_create(struct crypto_template *tmpl,
+				struct rtattr **tb)
+{
+	u32 mask;
+	struct aead_instance *inst;
+	struct aead_alg *alg;
+	struct crypto_rfc4543_instance_ctx *ctx;
+	int err;
 
-	ctx = crypto_instance_ctx(inst);
-	spawn = &ctx->aead;
-	crypto_set_aead_spawn(spawn, inst);
-	err = crypto_grab_aead(spawn, ccm_name, 0,
-			       crypto_requires_sync(algt->type, algt->mask));
+	err = crypto_check_attr_type(tb, CRYPTO_ALG_TYPE_AEAD, &mask);
 	if (err)
-		goto out_free_inst;
+		return err;
 
-	alg = crypto_aead_spawn_alg(spawn);
+	inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL);
+	if (!inst)
+		return -ENOMEM;
 
-	crypto_set_skcipher_spawn(&ctx->null, inst);
-	err = crypto_grab_skcipher(&ctx->null, "ecb(cipher_null)", 0,
-				   CRYPTO_ALG_ASYNC);
+	ctx = aead_instance_ctx(inst);
+	err = crypto_grab_aead(&ctx->aead, aead_crypto_instance(inst),
+			       crypto_attr_alg_name(tb[1]), 0, mask);
 	if (err)
-		goto out_drop_alg;
+		goto err_free_inst;
 
-	crypto_skcipher_spawn_alg(&ctx->null);
+	alg = crypto_spawn_aead_alg(&ctx->aead);
 
 	err = -EINVAL;
 
-	/* We only support 16-byte blocks. */
-	if (alg->cra_aead.ivsize != 16)
-		goto out_drop_ecbnull;
+	/* Underlying IV size must be 12. */
+	if (crypto_aead_alg_ivsize(alg) != GCM_AES_IV_SIZE)
+		goto err_free_inst;
 
 	/* Not a stream cipher? */
-	if (alg->cra_blocksize != 1)
-		goto out_drop_ecbnull;
+	if (alg->base.cra_blocksize != 1)
+		goto err_free_inst;
 
 	err = -ENAMETOOLONG;
-	if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME,
-		     "rfc4543(%s)", alg->cra_name) >= CRYPTO_MAX_ALG_NAME ||
-	    snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME,
-		     "rfc4543(%s)", alg->cra_driver_name) >=
+	if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME,
+		     "rfc4543(%s)", alg->base.cra_name) >=
+	    CRYPTO_MAX_ALG_NAME ||
+	    snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME,
+		     "rfc4543(%s)", alg->base.cra_driver_name) >=
 	    CRYPTO_MAX_ALG_NAME)
-		goto out_drop_ecbnull;
-
-	inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD;
-	inst->alg.cra_flags |= alg->cra_flags & CRYPTO_ALG_ASYNC;
-	inst->alg.cra_priority = alg->cra_priority;
-	inst->alg.cra_blocksize = 1;
-	inst->alg.cra_alignmask = alg->cra_alignmask;
-	inst->alg.cra_type = &crypto_nivaead_type;
-
-	inst->alg.cra_aead.ivsize = 8;
-	inst->alg.cra_aead.maxauthsize = 16;
-
-	inst->alg.cra_ctxsize = sizeof(struct crypto_rfc4543_ctx);
-
-	inst->alg.cra_init = crypto_rfc4543_init_tfm;
-	inst->alg.cra_exit = crypto_rfc4543_exit_tfm;
+		goto err_free_inst;
 
-	inst->alg.cra_aead.setkey = crypto_rfc4543_setkey;
-	inst->alg.cra_aead.setauthsize = crypto_rfc4543_setauthsize;
-	inst->alg.cra_aead.encrypt = crypto_rfc4543_encrypt;
-	inst->alg.cra_aead.decrypt = crypto_rfc4543_decrypt;
+	inst->alg.base.cra_priority = alg->base.cra_priority;
+	inst->alg.base.cra_blocksize = 1;
+	inst->alg.base.cra_alignmask = alg->base.cra_alignmask;
 
-	inst->alg.cra_aead.geniv = "seqiv";
+	inst->alg.base.cra_ctxsize = sizeof(struct crypto_rfc4543_ctx);
 
-out:
-	return inst;
+	inst->alg.ivsize = GCM_RFC4543_IV_SIZE;
+	inst->alg.chunksize = crypto_aead_alg_chunksize(alg);
+	inst->alg.maxauthsize = crypto_aead_alg_maxauthsize(alg);
 
-out_drop_ecbnull:
-	crypto_drop_skcipher(&ctx->null);
-out_drop_alg:
-	crypto_drop_aead(spawn);
-out_free_inst:
-	kfree(inst);
-	inst = ERR_PTR(err);
-	goto out;
-}
+	inst->alg.init = crypto_rfc4543_init_tfm;
+	inst->alg.exit = crypto_rfc4543_exit_tfm;
 
-static void crypto_rfc4543_free(struct crypto_instance *inst)
-{
-	struct crypto_rfc4543_instance_ctx *ctx = crypto_instance_ctx(inst);
+	inst->alg.setkey = crypto_rfc4543_setkey;
+	inst->alg.setauthsize = crypto_rfc4543_setauthsize;
+	inst->alg.encrypt = crypto_rfc4543_encrypt;
+	inst->alg.decrypt = crypto_rfc4543_decrypt;
 
-	crypto_drop_aead(&ctx->aead);
-	crypto_drop_skcipher(&ctx->null);
+	inst->free = crypto_rfc4543_free;
 
-	kfree(inst);
+	err = aead_register_instance(tmpl, inst);
+	if (err) {
+err_free_inst:
+		crypto_rfc4543_free(inst);
+	}
+	return err;
 }
 
-static struct crypto_template crypto_rfc4543_tmpl = {
-	.name = "rfc4543",
-	.alloc = crypto_rfc4543_alloc,
-	.free = crypto_rfc4543_free,
-	.module = THIS_MODULE,
+static struct crypto_template crypto_gcm_tmpls[] = {
+	{
+		.name = "gcm_base",
+		.create = crypto_gcm_base_create,
+		.module = THIS_MODULE,
+	}, {
+		.name = "gcm",
+		.create = crypto_gcm_create,
+		.module = THIS_MODULE,
+	}, {
+		.name = "rfc4106",
+		.create = crypto_rfc4106_create,
+		.module = THIS_MODULE,
+	}, {
+		.name = "rfc4543",
+		.create = crypto_rfc4543_create,
+		.module = THIS_MODULE,
+	},
 };
 
 static int __init crypto_gcm_module_init(void)
 {
 	int err;
 
-	gcm_zeroes = kzalloc(16, GFP_KERNEL);
+	gcm_zeroes = kzalloc(sizeof(*gcm_zeroes), GFP_KERNEL);
 	if (!gcm_zeroes)
 		return -ENOMEM;
 
-	err = crypto_register_template(&crypto_gcm_base_tmpl);
-	if (err)
-		goto out;
-
-	err = crypto_register_template(&crypto_gcm_tmpl);
-	if (err)
-		goto out_undo_base;
+	sg_init_one(&gcm_zeroes->sg, gcm_zeroes->buf, sizeof(gcm_zeroes->buf));
 
-	err = crypto_register_template(&crypto_rfc4106_tmpl);
+	err = crypto_register_templates(crypto_gcm_tmpls,
+					ARRAY_SIZE(crypto_gcm_tmpls));
 	if (err)
-		goto out_undo_gcm;
+		kfree(gcm_zeroes);
 
-	err = crypto_register_template(&crypto_rfc4543_tmpl);
-	if (err)
-		goto out_undo_rfc4106;
-
-	return 0;
-
-out_undo_rfc4106:
-	crypto_unregister_template(&crypto_rfc4106_tmpl);
-out_undo_gcm:
-	crypto_unregister_template(&crypto_gcm_tmpl);
-out_undo_base:
-	crypto_unregister_template(&crypto_gcm_base_tmpl);
-out:
-	kfree(gcm_zeroes);
 	return err;
 }
 
 static void __exit crypto_gcm_module_exit(void)
 {
 	kfree(gcm_zeroes);
-	crypto_unregister_template(&crypto_rfc4543_tmpl);
-	crypto_unregister_template(&crypto_rfc4106_tmpl);
-	crypto_unregister_template(&crypto_gcm_tmpl);
-	crypto_unregister_template(&crypto_gcm_base_tmpl);
+	crypto_unregister_templates(crypto_gcm_tmpls,
+				    ARRAY_SIZE(crypto_gcm_tmpls));
 }
 
 module_init(crypto_gcm_module_init);
@@ -1441,6 +1125,7 @@ module_exit(crypto_gcm_module_exit);
 MODULE_LICENSE("GPL");
 MODULE_DESCRIPTION("Galois/Counter Mode");
 MODULE_AUTHOR("Mikko Herranen <mh1@iki.fi>");
-MODULE_ALIAS("gcm_base");
-MODULE_ALIAS("rfc4106");
-MODULE_ALIAS("rfc4543");
+MODULE_ALIAS_CRYPTO("gcm_base");
+MODULE_ALIAS_CRYPTO("rfc4106");
+MODULE_ALIAS_CRYPTO("rfc4543");
+MODULE_ALIAS_CRYPTO("gcm");