1 files changed, 415 insertions, 338 deletions

diff --git a/arch/x86/crypto/aesni-intel_glue.c b/arch/x86/crypto/aesni-intel_glue.c
index ad8a7188a2bf..2144e54a6c89 100644
--- a/arch/x86/crypto/aesni-intel_glue.c
+++ b/arch/x86/crypto/aesni-intel_glue.c
@@ -31,11 +31,10 @@
 #include <crypto/internal/aead.h>
 #include <crypto/internal/simd.h>
 #include <crypto/internal/skcipher.h>
+#include <linux/jump_label.h>
 #include <linux/workqueue.h>
 #include <linux/spinlock.h>
-#ifdef CONFIG_X86_64
-#include <asm/crypto/glue_helper.h>
-#endif
+#include <linux/static_call.h>
 
 
 #define AESNI_ALIGN	16
@@ -93,62 +92,25 @@ asmlinkage void aesni_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out,
 			      const u8 *in, unsigned int len, u8 *iv);
 asmlinkage void aesni_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out,
 			      const u8 *in, unsigned int len, u8 *iv);
+asmlinkage void aesni_cts_cbc_enc(struct crypto_aes_ctx *ctx, u8 *out,
+				  const u8 *in, unsigned int len, u8 *iv);
+asmlinkage void aesni_cts_cbc_dec(struct crypto_aes_ctx *ctx, u8 *out,
+				  const u8 *in, unsigned int len, u8 *iv);
 
 #define AVX_GEN2_OPTSIZE 640
 #define AVX_GEN4_OPTSIZE 4096
 
+asmlinkage void aesni_xts_encrypt(const struct crypto_aes_ctx *ctx, u8 *out,
+				  const u8 *in, unsigned int len, u8 *iv);
+
+asmlinkage void aesni_xts_decrypt(const struct crypto_aes_ctx *ctx, u8 *out,
+				  const u8 *in, unsigned int len, u8 *iv);
+
 #ifdef CONFIG_X86_64
 
-static void (*aesni_ctr_enc_tfm)(struct crypto_aes_ctx *ctx, u8 *out,
-			      const u8 *in, unsigned int len, u8 *iv);
 asmlinkage void aesni_ctr_enc(struct crypto_aes_ctx *ctx, u8 *out,
 			      const u8 *in, unsigned int len, u8 *iv);
-
-asmlinkage void aesni_xts_crypt8(const struct crypto_aes_ctx *ctx, u8 *out,
-				 const u8 *in, bool enc, le128 *iv);
-
-/* asmlinkage void aesni_gcm_enc()
- * void *ctx,  AES Key schedule. Starts on a 16 byte boundary.
- * struct gcm_context_data.  May be uninitialized.
- * u8 *out, Ciphertext output. Encrypt in-place is allowed.
- * const u8 *in, Plaintext input
- * unsigned long plaintext_len, Length of data in bytes for encryption.
- * u8 *iv, Pre-counter block j0: 12 byte IV concatenated with 0x00000001.
- *         16-byte aligned pointer.
- * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary.
- * const u8 *aad, Additional Authentication Data (AAD)
- * unsigned long aad_len, Length of AAD in bytes.
- * u8 *auth_tag, Authenticated Tag output.
- * unsigned long auth_tag_len), Authenticated Tag Length in bytes.
- *          Valid values are 16 (most likely), 12 or 8.
- */
-asmlinkage void aesni_gcm_enc(void *ctx,
-			struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long plaintext_len, u8 *iv,
-			u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
-
-/* asmlinkage void aesni_gcm_dec()
- * void *ctx, AES Key schedule. Starts on a 16 byte boundary.
- * struct gcm_context_data.  May be uninitialized.
- * u8 *out, Plaintext output. Decrypt in-place is allowed.
- * const u8 *in, Ciphertext input
- * unsigned long ciphertext_len, Length of data in bytes for decryption.
- * u8 *iv, Pre-counter block j0: 12 byte IV concatenated with 0x00000001.
- *         16-byte aligned pointer.
- * u8 *hash_subkey, the Hash sub key input. Data starts on a 16-byte boundary.
- * const u8 *aad, Additional Authentication Data (AAD)
- * unsigned long aad_len, Length of AAD in bytes. With RFC4106 this is going
- * to be 8 or 12 bytes
- * u8 *auth_tag, Authenticated Tag output.
- * unsigned long auth_tag_len) Authenticated Tag Length in bytes.
- * Valid values are 16 (most likely), 12 or 8.
- */
-asmlinkage void aesni_gcm_dec(void *ctx,
-			struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long ciphertext_len, u8 *iv,
-			u8 *hash_subkey, const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
+DEFINE_STATIC_CALL(aesni_ctr_enc_tfm, aesni_ctr_enc);
 
 /* Scatter / Gather routines, with args similar to above */
 asmlinkage void aesni_gcm_init(void *ctx,
@@ -167,24 +129,6 @@ asmlinkage void aesni_gcm_finalize(void *ctx,
 				   struct gcm_context_data *gdata,
 				   u8 *auth_tag, unsigned long auth_tag_len);
 
-static const struct aesni_gcm_tfm_s {
-	void (*init)(void *ctx, struct gcm_context_data *gdata, u8 *iv,
-		     u8 *hash_subkey, const u8 *aad, unsigned long aad_len);
-	void (*enc_update)(void *ctx, struct gcm_context_data *gdata, u8 *out,
-			   const u8 *in, unsigned long plaintext_len);
-	void (*dec_update)(void *ctx, struct gcm_context_data *gdata, u8 *out,
-			   const u8 *in, unsigned long ciphertext_len);
-	void (*finalize)(void *ctx, struct gcm_context_data *gdata,
-			 u8 *auth_tag, unsigned long auth_tag_len);
-} *aesni_gcm_tfm;
-
-static const struct aesni_gcm_tfm_s aesni_gcm_tfm_sse = {
-	.init = &aesni_gcm_init,
-	.enc_update = &aesni_gcm_enc_update,
-	.dec_update = &aesni_gcm_dec_update,
-	.finalize = &aesni_gcm_finalize,
-};
-
 asmlinkage void aes_ctr_enc_128_avx_by8(const u8 *in, u8 *iv,
 		void *keys, u8 *out, unsigned int num_bytes);
 asmlinkage void aes_ctr_enc_192_avx_by8(const u8 *in, u8 *iv,
@@ -214,25 +158,6 @@ asmlinkage void aesni_gcm_finalize_avx_gen2(void *ctx,
 				   struct gcm_context_data *gdata,
 				   u8 *auth_tag, unsigned long auth_tag_len);
 
-asmlinkage void aesni_gcm_enc_avx_gen2(void *ctx,
-				struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long plaintext_len, u8 *iv,
-			const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
-
-asmlinkage void aesni_gcm_dec_avx_gen2(void *ctx,
-				struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long ciphertext_len, u8 *iv,
-			const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
-
-static const struct aesni_gcm_tfm_s aesni_gcm_tfm_avx_gen2 = {
-	.init = &aesni_gcm_init_avx_gen2,
-	.enc_update = &aesni_gcm_enc_update_avx_gen2,
-	.dec_update = &aesni_gcm_dec_update_avx_gen2,
-	.finalize = &aesni_gcm_finalize_avx_gen2,
-};
-
 /*
  * asmlinkage void aesni_gcm_init_avx_gen4()
  * gcm_data *my_ctx_data, context data
@@ -256,24 +181,8 @@ asmlinkage void aesni_gcm_finalize_avx_gen4(void *ctx,
 				   struct gcm_context_data *gdata,
 				   u8 *auth_tag, unsigned long auth_tag_len);
 
-asmlinkage void aesni_gcm_enc_avx_gen4(void *ctx,
-				struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long plaintext_len, u8 *iv,
-			const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
-
-asmlinkage void aesni_gcm_dec_avx_gen4(void *ctx,
-				struct gcm_context_data *gdata, u8 *out,
-			const u8 *in, unsigned long ciphertext_len, u8 *iv,
-			const u8 *aad, unsigned long aad_len,
-			u8 *auth_tag, unsigned long auth_tag_len);
-
-static const struct aesni_gcm_tfm_s aesni_gcm_tfm_avx_gen4 = {
-	.init = &aesni_gcm_init_avx_gen4,
-	.enc_update = &aesni_gcm_enc_update_avx_gen4,
-	.dec_update = &aesni_gcm_dec_update_avx_gen4,
-	.finalize = &aesni_gcm_finalize_avx_gen4,
-};
+static __ro_after_init DEFINE_STATIC_KEY_FALSE(gcm_use_avx);
+static __ro_after_init DEFINE_STATIC_KEY_FALSE(gcm_use_avx2);
 
 static inline struct
 aesni_rfc4106_gcm_ctx *aesni_rfc4106_gcm_ctx_get(struct crypto_aead *tfm)
@@ -374,16 +283,16 @@ static int ecb_encrypt(struct skcipher_request *req)
 	unsigned int nbytes;
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
-	kernel_fpu_begin();
 	while ((nbytes = walk.nbytes)) {
+		kernel_fpu_begin();
 		aesni_ecb_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
 			      nbytes & AES_BLOCK_MASK);
+		kernel_fpu_end();
 		nbytes &= AES_BLOCK_SIZE - 1;
 		err = skcipher_walk_done(&walk, nbytes);
 	}
-	kernel_fpu_end();
 
 	return err;
 }
@@ -396,16 +305,16 @@ static int ecb_decrypt(struct skcipher_request *req)
 	unsigned int nbytes;
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
-	kernel_fpu_begin();
 	while ((nbytes = walk.nbytes)) {
+		kernel_fpu_begin();
 		aesni_ecb_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr,
 			      nbytes & AES_BLOCK_MASK);
+		kernel_fpu_end();
 		nbytes &= AES_BLOCK_SIZE - 1;
 		err = skcipher_walk_done(&walk, nbytes);
 	}
-	kernel_fpu_end();
 
 	return err;
 }
@@ -418,16 +327,16 @@ static int cbc_encrypt(struct skcipher_request *req)
 	unsigned int nbytes;
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
-	kernel_fpu_begin();
 	while ((nbytes = walk.nbytes)) {
+		kernel_fpu_begin();
 		aesni_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
 			      nbytes & AES_BLOCK_MASK, walk.iv);
+		kernel_fpu_end();
 		nbytes &= AES_BLOCK_SIZE - 1;
 		err = skcipher_walk_done(&walk, nbytes);
 	}
-	kernel_fpu_end();
 
 	return err;
 }
@@ -440,36 +349,133 @@ static int cbc_decrypt(struct skcipher_request *req)
 	unsigned int nbytes;
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
-	kernel_fpu_begin();
 	while ((nbytes = walk.nbytes)) {
+		kernel_fpu_begin();
 		aesni_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr,
 			      nbytes & AES_BLOCK_MASK, walk.iv);
+		kernel_fpu_end();
 		nbytes &= AES_BLOCK_SIZE - 1;
 		err = skcipher_walk_done(&walk, nbytes);
 	}
-	kernel_fpu_end();
 
 	return err;
 }
 
-#ifdef CONFIG_X86_64
-static void ctr_crypt_final(struct crypto_aes_ctx *ctx,
-			    struct skcipher_walk *walk)
+static int cts_cbc_encrypt(struct skcipher_request *req)
 {
-	u8 *ctrblk = walk->iv;
-	u8 keystream[AES_BLOCK_SIZE];
-	u8 *src = walk->src.virt.addr;
-	u8 *dst = walk->dst.virt.addr;
-	unsigned int nbytes = walk->nbytes;
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct crypto_aes_ctx *ctx = aes_ctx(crypto_skcipher_ctx(tfm));
+	int cbc_blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2;
+	struct scatterlist *src = req->src, *dst = req->dst;
+	struct scatterlist sg_src[2], sg_dst[2];
+	struct skcipher_request subreq;
+	struct skcipher_walk walk;
+	int err;
+
+	skcipher_request_set_tfm(&subreq, tfm);
+	skcipher_request_set_callback(&subreq, skcipher_request_flags(req),
+				      NULL, NULL);
+
+	if (req->cryptlen <= AES_BLOCK_SIZE) {
+		if (req->cryptlen < AES_BLOCK_SIZE)
+			return -EINVAL;
+		cbc_blocks = 1;
+	}
+
+	if (cbc_blocks > 0) {
+		skcipher_request_set_crypt(&subreq, req->src, req->dst,
+					   cbc_blocks * AES_BLOCK_SIZE,
+					   req->iv);
+
+		err = cbc_encrypt(&subreq);
+		if (err)
+			return err;
+
+		if (req->cryptlen == AES_BLOCK_SIZE)
+			return 0;
+
+		dst = src = scatterwalk_ffwd(sg_src, req->src, subreq.cryptlen);
+		if (req->dst != req->src)
+			dst = scatterwalk_ffwd(sg_dst, req->dst,
+					       subreq.cryptlen);
+	}
+
+	/* handle ciphertext stealing */
+	skcipher_request_set_crypt(&subreq, src, dst,
+				   req->cryptlen - cbc_blocks * AES_BLOCK_SIZE,
+				   req->iv);
+
+	err = skcipher_walk_virt(&walk, &subreq, false);
+	if (err)
+		return err;
+
+	kernel_fpu_begin();
+	aesni_cts_cbc_enc(ctx, walk.dst.virt.addr, walk.src.virt.addr,
+			  walk.nbytes, walk.iv);
+	kernel_fpu_end();
+
+	return skcipher_walk_done(&walk, 0);
+}
+
+static int cts_cbc_decrypt(struct skcipher_request *req)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct crypto_aes_ctx *ctx = aes_ctx(crypto_skcipher_ctx(tfm));
+	int cbc_blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2;
+	struct scatterlist *src = req->src, *dst = req->dst;
+	struct scatterlist sg_src[2], sg_dst[2];
+	struct skcipher_request subreq;
+	struct skcipher_walk walk;
+	int err;
+
+	skcipher_request_set_tfm(&subreq, tfm);
+	skcipher_request_set_callback(&subreq, skcipher_request_flags(req),
+				      NULL, NULL);
+
+	if (req->cryptlen <= AES_BLOCK_SIZE) {
+		if (req->cryptlen < AES_BLOCK_SIZE)
+			return -EINVAL;
+		cbc_blocks = 1;
+	}
+
+	if (cbc_blocks > 0) {
+		skcipher_request_set_crypt(&subreq, req->src, req->dst,
+					   cbc_blocks * AES_BLOCK_SIZE,
+					   req->iv);
+
+		err = cbc_decrypt(&subreq);
+		if (err)
+			return err;
+
+		if (req->cryptlen == AES_BLOCK_SIZE)
+			return 0;
+
+		dst = src = scatterwalk_ffwd(sg_src, req->src, subreq.cryptlen);
+		if (req->dst != req->src)
+			dst = scatterwalk_ffwd(sg_dst, req->dst,
+					       subreq.cryptlen);
+	}
+
+	/* handle ciphertext stealing */
+	skcipher_request_set_crypt(&subreq, src, dst,
+				   req->cryptlen - cbc_blocks * AES_BLOCK_SIZE,
+				   req->iv);
 
-	aesni_enc(ctx, keystream, ctrblk);
-	crypto_xor_cpy(dst, keystream, src, nbytes);
+	err = skcipher_walk_virt(&walk, &subreq, false);
+	if (err)
+		return err;
+
+	kernel_fpu_begin();
+	aesni_cts_cbc_dec(ctx, walk.dst.virt.addr, walk.src.virt.addr,
+			  walk.nbytes, walk.iv);
+	kernel_fpu_end();
 
-	crypto_inc(ctrblk, AES_BLOCK_SIZE);
+	return skcipher_walk_done(&walk, 0);
 }
 
+#ifdef CONFIG_X86_64
 static void aesni_ctr_enc_avx_tfm(struct crypto_aes_ctx *ctx, u8 *out,
 			      const u8 *in, unsigned int len, u8 *iv)
 {
@@ -491,120 +497,36 @@ static int ctr_crypt(struct skcipher_request *req)
 {
 	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
 	struct crypto_aes_ctx *ctx = aes_ctx(crypto_skcipher_ctx(tfm));
+	u8 keystream[AES_BLOCK_SIZE];
 	struct skcipher_walk walk;
 	unsigned int nbytes;
 	int err;
 
-	err = skcipher_walk_virt(&walk, req, true);
+	err = skcipher_walk_virt(&walk, req, false);
 
-	kernel_fpu_begin();
-	while ((nbytes = walk.nbytes) >= AES_BLOCK_SIZE) {
-		aesni_ctr_enc_tfm(ctx, walk.dst.virt.addr, walk.src.virt.addr,
-			              nbytes & AES_BLOCK_MASK, walk.iv);
-		nbytes &= AES_BLOCK_SIZE - 1;
+	while ((nbytes = walk.nbytes) > 0) {
+		kernel_fpu_begin();
+		if (nbytes & AES_BLOCK_MASK)
+			static_call(aesni_ctr_enc_tfm)(ctx, walk.dst.virt.addr,
+						       walk.src.virt.addr,
+						       nbytes & AES_BLOCK_MASK,
+						       walk.iv);
+		nbytes &= ~AES_BLOCK_MASK;
+
+		if (walk.nbytes == walk.total && nbytes > 0) {
+			aesni_enc(ctx, keystream, walk.iv);
+			crypto_xor_cpy(walk.dst.virt.addr + walk.nbytes - nbytes,
+				       walk.src.virt.addr + walk.nbytes - nbytes,
+				       keystream, nbytes);
+			crypto_inc(walk.iv, AES_BLOCK_SIZE);
+			nbytes = 0;
+		}
+		kernel_fpu_end();
 		err = skcipher_walk_done(&walk, nbytes);
 	}
-	if (walk.nbytes) {
-		ctr_crypt_final(ctx, &walk);
-		err = skcipher_walk_done(&walk, 0);
-	}
-	kernel_fpu_end();
-
 	return err;
 }
 
-static int xts_aesni_setkey(struct crypto_skcipher *tfm, const u8 *key,
-			    unsigned int keylen)
-{
-	struct aesni_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-	int err;
-
-	err = xts_verify_key(tfm, key, keylen);
-	if (err)
-		return err;
-
-	keylen /= 2;
-
-	/* first half of xts-key is for crypt */
-	err = aes_set_key_common(crypto_skcipher_tfm(tfm), ctx->raw_crypt_ctx,
-				 key, keylen);
-	if (err)
-		return err;
-
-	/* second half of xts-key is for tweak */
-	return aes_set_key_common(crypto_skcipher_tfm(tfm), ctx->raw_tweak_ctx,
-				  key + keylen, keylen);
-}
-
-
-static void aesni_xts_enc(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
-	glue_xts_crypt_128bit_one(ctx, dst, src, iv, aesni_enc);
-}
-
-static void aesni_xts_dec(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
-	glue_xts_crypt_128bit_one(ctx, dst, src, iv, aesni_dec);
-}
-
-static void aesni_xts_enc8(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
-	aesni_xts_crypt8(ctx, dst, src, true, iv);
-}
-
-static void aesni_xts_dec8(const void *ctx, u8 *dst, const u8 *src, le128 *iv)
-{
-	aesni_xts_crypt8(ctx, dst, src, false, iv);
-}
-
-static const struct common_glue_ctx aesni_enc_xts = {
-	.num_funcs = 2,
-	.fpu_blocks_limit = 1,
-
-	.funcs = { {
-		.num_blocks = 8,
-		.fn_u = { .xts = aesni_xts_enc8 }
-	}, {
-		.num_blocks = 1,
-		.fn_u = { .xts = aesni_xts_enc }
-	} }
-};
-
-static const struct common_glue_ctx aesni_dec_xts = {
-	.num_funcs = 2,
-	.fpu_blocks_limit = 1,
-
-	.funcs = { {
-		.num_blocks = 8,
-		.fn_u = { .xts = aesni_xts_dec8 }
-	}, {
-		.num_blocks = 1,
-		.fn_u = { .xts = aesni_xts_dec }
-	} }
-};
-
-static int xts_encrypt(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-	struct aesni_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
-	return glue_xts_req_128bit(&aesni_enc_xts, req, aesni_enc,
-				   aes_ctx(ctx->raw_tweak_ctx),
-				   aes_ctx(ctx->raw_crypt_ctx),
-				   false);
-}
-
-static int xts_decrypt(struct skcipher_request *req)
-{
-	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
-	struct aesni_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
-
-	return glue_xts_req_128bit(&aesni_dec_xts, req, aesni_enc,
-				   aes_ctx(ctx->raw_tweak_ctx),
-				   aes_ctx(ctx->raw_crypt_ctx),
-				   true);
-}
-
 static int
 rfc4106_set_hash_subkey(u8 *hash_subkey, const u8 *key, unsigned int key_len)
 {
@@ -681,42 +603,35 @@ static int generic_gcmaes_set_authsize(struct crypto_aead *tfm,
 
 static int gcmaes_crypt_by_sg(bool enc, struct aead_request *req,
 			      unsigned int assoclen, u8 *hash_subkey,
-			      u8 *iv, void *aes_ctx)
+			      u8 *iv, void *aes_ctx, u8 *auth_tag,
+			      unsigned long auth_tag_len)
 {
-	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
-	unsigned long auth_tag_len = crypto_aead_authsize(tfm);
-	const struct aesni_gcm_tfm_s *gcm_tfm = aesni_gcm_tfm;
-	struct gcm_context_data data AESNI_ALIGN_ATTR;
-	struct scatter_walk dst_sg_walk = {};
+	u8 databuf[sizeof(struct gcm_context_data) + (AESNI_ALIGN - 8)] __aligned(8);
+	struct gcm_context_data *data = PTR_ALIGN((void *)databuf, AESNI_ALIGN);
 	unsigned long left = req->cryptlen;
-	unsigned long len, srclen, dstlen;
 	struct scatter_walk assoc_sg_walk;
-	struct scatter_walk src_sg_walk;
-	struct scatterlist src_start[2];
-	struct scatterlist dst_start[2];
-	struct scatterlist *src_sg;
-	struct scatterlist *dst_sg;
-	u8 *src, *dst, *assoc;
+	struct skcipher_walk walk;
+	bool do_avx, do_avx2;
 	u8 *assocmem = NULL;
-	u8 authTag[16];
+	u8 *assoc;
+	int err;
 
 	if (!enc)
 		left -= auth_tag_len;
 
-	if (left < AVX_GEN4_OPTSIZE && gcm_tfm == &aesni_gcm_tfm_avx_gen4)
-		gcm_tfm = &aesni_gcm_tfm_avx_gen2;
-	if (left < AVX_GEN2_OPTSIZE && gcm_tfm == &aesni_gcm_tfm_avx_gen2)
-		gcm_tfm = &aesni_gcm_tfm_sse;
+	do_avx = (left >= AVX_GEN2_OPTSIZE);
+	do_avx2 = (left >= AVX_GEN4_OPTSIZE);
 
 	/* Linearize assoc, if not already linear */
-	if (req->src->length >= assoclen && req->src->length &&
-		(!PageHighMem(sg_page(req->src)) ||
-			req->src->offset + req->src->length <= PAGE_SIZE)) {
+	if (req->src->length >= assoclen && req->src->length) {
 		scatterwalk_start(&assoc_sg_walk, req->src);
 		assoc = scatterwalk_map(&assoc_sg_walk);
 	} else {
+		gfp_t flags = (req->base.flags & CRYPTO_TFM_REQ_MAY_SLEEP) ?
+			      GFP_KERNEL : GFP_ATOMIC;
+
 		/* assoc can be any length, so must be on heap */
-		assocmem = kmalloc(assoclen, GFP_ATOMIC);
+		assocmem = kmalloc(assoclen, flags);
 		if (unlikely(!assocmem))
 			return -ENOMEM;
 		assoc = assocmem;
@@ -724,62 +639,15 @@ static int gcmaes_crypt_by_sg(bool enc, struct aead_request *req,
 		scatterwalk_map_and_copy(assoc, req->src, 0, assoclen, 0);
 	}
 
-	if (left) {
-		src_sg = scatterwalk_ffwd(src_start, req->src, req->assoclen);
-		scatterwalk_start(&src_sg_walk, src_sg);
-		if (req->src != req->dst) {
-			dst_sg = scatterwalk_ffwd(dst_start, req->dst,
-						  req->assoclen);
-			scatterwalk_start(&dst_sg_walk, dst_sg);
-		}
-	}
-
 	kernel_fpu_begin();
-	gcm_tfm->init(aes_ctx, &data, iv,
-		hash_subkey, assoc, assoclen);
-	if (req->src != req->dst) {
-		while (left) {
-			src = scatterwalk_map(&src_sg_walk);
-			dst = scatterwalk_map(&dst_sg_walk);
-			srclen = scatterwalk_clamp(&src_sg_walk, left);
-			dstlen = scatterwalk_clamp(&dst_sg_walk, left);
-			len = min(srclen, dstlen);
-			if (len) {
-				if (enc)
-					gcm_tfm->enc_update(aes_ctx, &data,
-							     dst, src, len);
-				else
-					gcm_tfm->dec_update(aes_ctx, &data,
-							     dst, src, len);
-			}
-			left -= len;
-
-			scatterwalk_unmap(src);
-			scatterwalk_unmap(dst);
-			scatterwalk_advance(&src_sg_walk, len);
-			scatterwalk_advance(&dst_sg_walk, len);
-			scatterwalk_done(&src_sg_walk, 0, left);
-			scatterwalk_done(&dst_sg_walk, 1, left);
-		}
-	} else {
-		while (left) {
-			dst = src = scatterwalk_map(&src_sg_walk);
-			len = scatterwalk_clamp(&src_sg_walk, left);
-			if (len) {
-				if (enc)
-					gcm_tfm->enc_update(aes_ctx, &data,
-							     src, src, len);
-				else
-					gcm_tfm->dec_update(aes_ctx, &data,
-							     src, src, len);
-			}
-			left -= len;
-			scatterwalk_unmap(src);
-			scatterwalk_advance(&src_sg_walk, len);
-			scatterwalk_done(&src_sg_walk, 1, left);
-		}
-	}
-	gcm_tfm->finalize(aes_ctx, &data, authTag, auth_tag_len);
+	if (static_branch_likely(&gcm_use_avx2) && do_avx2)
+		aesni_gcm_init_avx_gen4(aes_ctx, data, iv, hash_subkey, assoc,
+					assoclen);
+	else if (static_branch_likely(&gcm_use_avx) && do_avx)
+		aesni_gcm_init_avx_gen2(aes_ctx, data, iv, hash_subkey, assoc,
+					assoclen);
+	else
+		aesni_gcm_init(aes_ctx, data, iv, hash_subkey, assoc, assoclen);
 	kernel_fpu_end();
 
 	if (!assocmem)
@@ -787,24 +655,58 @@ static int gcmaes_crypt_by_sg(bool enc, struct aead_request *req,
 	else
 		kfree(assocmem);
 
-	if (!enc) {
-		u8 authTagMsg[16];
+	err = enc ? skcipher_walk_aead_encrypt(&walk, req, false)
+		  : skcipher_walk_aead_decrypt(&walk, req, false);
 
-		/* Copy out original authTag */
-		scatterwalk_map_and_copy(authTagMsg, req->src,
-					 req->assoclen + req->cryptlen -
-					 auth_tag_len,
-					 auth_tag_len, 0);
+	while (walk.nbytes > 0) {
+		kernel_fpu_begin();
+		if (static_branch_likely(&gcm_use_avx2) && do_avx2) {
+			if (enc)
+				aesni_gcm_enc_update_avx_gen4(aes_ctx, data,
+							      walk.dst.virt.addr,
+							      walk.src.virt.addr,
+							      walk.nbytes);
+			else
+				aesni_gcm_dec_update_avx_gen4(aes_ctx, data,
+							      walk.dst.virt.addr,
+							      walk.src.virt.addr,
+							      walk.nbytes);
+		} else if (static_branch_likely(&gcm_use_avx) && do_avx) {
+			if (enc)
+				aesni_gcm_enc_update_avx_gen2(aes_ctx, data,
+							      walk.dst.virt.addr,
+							      walk.src.virt.addr,
+							      walk.nbytes);
+			else
+				aesni_gcm_dec_update_avx_gen2(aes_ctx, data,
+							      walk.dst.virt.addr,
+							      walk.src.virt.addr,
+							      walk.nbytes);
+		} else if (enc) {
+			aesni_gcm_enc_update(aes_ctx, data, walk.dst.virt.addr,
+					     walk.src.virt.addr, walk.nbytes);
+		} else {
+			aesni_gcm_dec_update(aes_ctx, data, walk.dst.virt.addr,
+					     walk.src.virt.addr, walk.nbytes);
+		}
+		kernel_fpu_end();
 
-		/* Compare generated tag with passed in tag. */
-		return crypto_memneq(authTagMsg, authTag, auth_tag_len) ?
-			-EBADMSG : 0;
+		err = skcipher_walk_done(&walk, 0);
 	}
 
-	/* Copy in the authTag */
-	scatterwalk_map_and_copy(authTag, req->dst,
-				 req->assoclen + req->cryptlen,
-				 auth_tag_len, 1);
+	if (err)
+		return err;
+
+	kernel_fpu_begin();
+	if (static_branch_likely(&gcm_use_avx2) && do_avx2)
+		aesni_gcm_finalize_avx_gen4(aes_ctx, data, auth_tag,
+					    auth_tag_len);
+	else if (static_branch_likely(&gcm_use_avx) && do_avx)
+		aesni_gcm_finalize_avx_gen2(aes_ctx, data, auth_tag,
+					    auth_tag_len);
+	else
+		aesni_gcm_finalize(aes_ctx, data, auth_tag, auth_tag_len);
+	kernel_fpu_end();
 
 	return 0;
 }
@@ -812,15 +714,47 @@ static int gcmaes_crypt_by_sg(bool enc, struct aead_request *req,
 static int gcmaes_encrypt(struct aead_request *req, unsigned int assoclen,
 			  u8 *hash_subkey, u8 *iv, void *aes_ctx)
 {
-	return gcmaes_crypt_by_sg(true, req, assoclen, hash_subkey, iv,
-				aes_ctx);
+	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+	unsigned long auth_tag_len = crypto_aead_authsize(tfm);
+	u8 auth_tag[16];
+	int err;
+
+	err = gcmaes_crypt_by_sg(true, req, assoclen, hash_subkey, iv, aes_ctx,
+				 auth_tag, auth_tag_len);
+	if (err)
+		return err;
+
+	scatterwalk_map_and_copy(auth_tag, req->dst,
+				 req->assoclen + req->cryptlen,
+				 auth_tag_len, 1);
+	return 0;
 }
 
 static int gcmaes_decrypt(struct aead_request *req, unsigned int assoclen,
 			  u8 *hash_subkey, u8 *iv, void *aes_ctx)
 {
-	return gcmaes_crypt_by_sg(false, req, assoclen, hash_subkey, iv,
-				aes_ctx);
+	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
+	unsigned long auth_tag_len = crypto_aead_authsize(tfm);
+	u8 auth_tag_msg[16];
+	u8 auth_tag[16];
+	int err;
+
+	err = gcmaes_crypt_by_sg(false, req, assoclen, hash_subkey, iv, aes_ctx,
+				 auth_tag, auth_tag_len);
+	if (err)
+		return err;
+
+	/* Copy out original auth_tag */
+	scatterwalk_map_and_copy(auth_tag_msg, req->src,
+				 req->assoclen + req->cryptlen - auth_tag_len,
+				 auth_tag_len, 0);
+
+	/* Compare generated tag with passed in tag. */
+	if (crypto_memneq(auth_tag_msg, auth_tag, auth_tag_len)) {
+		memzero_explicit(auth_tag, sizeof(auth_tag));
+		return -EBADMSG;
+	}
+	return 0;
 }
 
 static int helper_rfc4106_encrypt(struct aead_request *req)
@@ -828,7 +762,8 @@ static int helper_rfc4106_encrypt(struct aead_request *req)
 	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
 	struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
 	void *aes_ctx = &(ctx->aes_key_expanded);
-	u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN)));
+	u8 ivbuf[16 + (AESNI_ALIGN - 8)] __aligned(8);
+	u8 *iv = PTR_ALIGN(&ivbuf[0], AESNI_ALIGN);
 	unsigned int i;
 	__be32 counter = cpu_to_be32(1);
 
@@ -855,7 +790,8 @@ static int helper_rfc4106_decrypt(struct aead_request *req)
 	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
 	struct aesni_rfc4106_gcm_ctx *ctx = aesni_rfc4106_gcm_ctx_get(tfm);
 	void *aes_ctx = &(ctx->aes_key_expanded);
-	u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN)));
+	u8 ivbuf[16 + (AESNI_ALIGN - 8)] __aligned(8);
+	u8 *iv = PTR_ALIGN(&ivbuf[0], AESNI_ALIGN);
 	unsigned int i;
 
 	if (unlikely(req->assoclen != 16 && req->assoclen != 20))
@@ -877,6 +813,128 @@ static int helper_rfc4106_decrypt(struct aead_request *req)
 }
 #endif
 
+static int xts_aesni_setkey(struct crypto_skcipher *tfm, const u8 *key,
+			    unsigned int keylen)
+{
+	struct aesni_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+	int err;
+
+	err = xts_verify_key(tfm, key, keylen);
+	if (err)
+		return err;
+
+	keylen /= 2;
+
+	/* first half of xts-key is for crypt */
+	err = aes_set_key_common(crypto_skcipher_tfm(tfm), ctx->raw_crypt_ctx,
+				 key, keylen);
+	if (err)
+		return err;
+
+	/* second half of xts-key is for tweak */
+	return aes_set_key_common(crypto_skcipher_tfm(tfm), ctx->raw_tweak_ctx,
+				  key + keylen, keylen);
+}
+
+static int xts_crypt(struct skcipher_request *req, bool encrypt)
+{
+	struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(req);
+	struct aesni_xts_ctx *ctx = crypto_skcipher_ctx(tfm);
+	int tail = req->cryptlen % AES_BLOCK_SIZE;
+	struct skcipher_request subreq;
+	struct skcipher_walk walk;
+	int err;
+
+	if (req->cryptlen < AES_BLOCK_SIZE)
+		return -EINVAL;
+
+	err = skcipher_walk_virt(&walk, req, false);
+
+	if (unlikely(tail > 0 && walk.nbytes < walk.total)) {
+		int blocks = DIV_ROUND_UP(req->cryptlen, AES_BLOCK_SIZE) - 2;
+
+		skcipher_walk_abort(&walk);
+
+		skcipher_request_set_tfm(&subreq, tfm);
+		skcipher_request_set_callback(&subreq,
+					      skcipher_request_flags(req),
+					      NULL, NULL);
+		skcipher_request_set_crypt(&subreq, req->src, req->dst,
+					   blocks * AES_BLOCK_SIZE, req->iv);
+		req = &subreq;
+		err = skcipher_walk_virt(&walk, req, false);
+	} else {
+		tail = 0;
+	}
+
+	kernel_fpu_begin();
+
+	/* calculate first value of T */
+	aesni_enc(aes_ctx(ctx->raw_tweak_ctx), walk.iv, walk.iv);
+
+	while (walk.nbytes > 0) {
+		int nbytes = walk.nbytes;
+
+		if (nbytes < walk.total)
+			nbytes &= ~(AES_BLOCK_SIZE - 1);
+
+		if (encrypt)
+			aesni_xts_encrypt(aes_ctx(ctx->raw_crypt_ctx),
+					  walk.dst.virt.addr, walk.src.virt.addr,
+					  nbytes, walk.iv);
+		else
+			aesni_xts_decrypt(aes_ctx(ctx->raw_crypt_ctx),
+					  walk.dst.virt.addr, walk.src.virt.addr,
+					  nbytes, walk.iv);
+		kernel_fpu_end();
+
+		err = skcipher_walk_done(&walk, walk.nbytes - nbytes);
+
+		if (walk.nbytes > 0)
+			kernel_fpu_begin();
+	}
+
+	if (unlikely(tail > 0 && !err)) {
+		struct scatterlist sg_src[2], sg_dst[2];
+		struct scatterlist *src, *dst;
+
+		dst = src = scatterwalk_ffwd(sg_src, req->src, req->cryptlen);
+		if (req->dst != req->src)
+			dst = scatterwalk_ffwd(sg_dst, req->dst, req->cryptlen);
+
+		skcipher_request_set_crypt(req, src, dst, AES_BLOCK_SIZE + tail,
+					   req->iv);
+
+		err = skcipher_walk_virt(&walk, &subreq, false);
+		if (err)
+			return err;
+
+		kernel_fpu_begin();
+		if (encrypt)
+			aesni_xts_encrypt(aes_ctx(ctx->raw_crypt_ctx),
+					  walk.dst.virt.addr, walk.src.virt.addr,
+					  walk.nbytes, walk.iv);
+		else
+			aesni_xts_decrypt(aes_ctx(ctx->raw_crypt_ctx),
+					  walk.dst.virt.addr, walk.src.virt.addr,
+					  walk.nbytes, walk.iv);
+		kernel_fpu_end();
+
+		err = skcipher_walk_done(&walk, 0);
+	}
+	return err;
+}
+
+static int xts_encrypt(struct skcipher_request *req)
+{
+	return xts_crypt(req, true);
+}
+
+static int xts_decrypt(struct skcipher_request *req)
+{
+	return xts_crypt(req, false);
+}
+
 static struct crypto_alg aesni_cipher_alg = {
 	.cra_name		= "aes",
 	.cra_driver_name	= "aes-aesni",
@@ -928,6 +986,23 @@ static struct skcipher_alg aesni_skciphers[] = {
 		.setkey		= aesni_skcipher_setkey,
 		.encrypt	= cbc_encrypt,
 		.decrypt	= cbc_decrypt,
+	}, {
+		.base = {
+			.cra_name		= "__cts(cbc(aes))",
+			.cra_driver_name	= "__cts-cbc-aes-aesni",
+			.cra_priority		= 400,
+			.cra_flags		= CRYPTO_ALG_INTERNAL,
+			.cra_blocksize		= AES_BLOCK_SIZE,
+			.cra_ctxsize		= CRYPTO_AES_CTX_SIZE,
+			.cra_module		= THIS_MODULE,
+		},
+		.min_keysize	= AES_MIN_KEY_SIZE,
+		.max_keysize	= AES_MAX_KEY_SIZE,
+		.ivsize		= AES_BLOCK_SIZE,
+		.walksize	= 2 * AES_BLOCK_SIZE,
+		.setkey		= aesni_skcipher_setkey,
+		.encrypt	= cts_cbc_encrypt,
+		.decrypt	= cts_cbc_decrypt,
 #ifdef CONFIG_X86_64
 	}, {
 		.base = {
@@ -946,6 +1021,7 @@ static struct skcipher_alg aesni_skciphers[] = {
 		.setkey		= aesni_skcipher_setkey,
 		.encrypt	= ctr_crypt,
 		.decrypt	= ctr_crypt,
+#endif
 	}, {
 		.base = {
 			.cra_name		= "__xts(aes)",
@@ -959,10 +1035,10 @@ static struct skcipher_alg aesni_skciphers[] = {
 		.min_keysize	= 2 * AES_MIN_KEY_SIZE,
 		.max_keysize	= 2 * AES_MAX_KEY_SIZE,
 		.ivsize		= AES_BLOCK_SIZE,
+		.walksize	= 2 * AES_BLOCK_SIZE,
 		.setkey		= xts_aesni_setkey,
 		.encrypt	= xts_encrypt,
 		.decrypt	= xts_decrypt,
-#endif
 	}
 };
 
@@ -985,7 +1061,8 @@ static int generic_gcmaes_encrypt(struct aead_request *req)
 	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
 	struct generic_gcmaes_ctx *ctx = generic_gcmaes_ctx_get(tfm);
 	void *aes_ctx = &(ctx->aes_key_expanded);
-	u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN)));
+	u8 ivbuf[16 + (AESNI_ALIGN - 8)] __aligned(8);
+	u8 *iv = PTR_ALIGN(&ivbuf[0], AESNI_ALIGN);
 	__be32 counter = cpu_to_be32(1);
 
 	memcpy(iv, req->iv, 12);
@@ -1001,7 +1078,8 @@ static int generic_gcmaes_decrypt(struct aead_request *req)
 	struct crypto_aead *tfm = crypto_aead_reqtfm(req);
 	struct generic_gcmaes_ctx *ctx = generic_gcmaes_ctx_get(tfm);
 	void *aes_ctx = &(ctx->aes_key_expanded);
-	u8 iv[16] __attribute__ ((__aligned__(AESNI_ALIGN)));
+	u8 ivbuf[16 + (AESNI_ALIGN - 8)] __aligned(8);
+	u8 *iv = PTR_ALIGN(&ivbuf[0], AESNI_ALIGN);
 
 	memcpy(iv, req->iv, 12);
 	*((__be32 *)(iv+12)) = counter;
@@ -1066,19 +1144,18 @@ static int __init aesni_init(void)
 #ifdef CONFIG_X86_64
 	if (boot_cpu_has(X86_FEATURE_AVX2)) {
 		pr_info("AVX2 version of gcm_enc/dec engaged.\n");
-		aesni_gcm_tfm = &aesni_gcm_tfm_avx_gen4;
+		static_branch_enable(&gcm_use_avx);
+		static_branch_enable(&gcm_use_avx2);
 	} else
 	if (boot_cpu_has(X86_FEATURE_AVX)) {
 		pr_info("AVX version of gcm_enc/dec engaged.\n");
-		aesni_gcm_tfm = &aesni_gcm_tfm_avx_gen2;
+		static_branch_enable(&gcm_use_avx);
 	} else {
 		pr_info("SSE version of gcm_enc/dec engaged.\n");
-		aesni_gcm_tfm = &aesni_gcm_tfm_sse;
 	}
-	aesni_ctr_enc_tfm = aesni_ctr_enc;
 	if (boot_cpu_has(X86_FEATURE_AVX)) {
 		/* optimize performance of ctr mode encryption transform */
-		aesni_ctr_enc_tfm = aesni_ctr_enc_avx_tfm;
+		static_call_update(aesni_ctr_enc_tfm, aesni_ctr_enc_avx_tfm);
 		pr_info("AES CTR mode by8 optimization enabled\n");
 	}
 #endif