Commit 69cd3e16 authored by Gilad Ben-Yossef's avatar Gilad Ben-Yossef Committed by Herbert Xu
Browse files

crypto: ccree - only check condition if needed 



Move testing of condition to after the point we decide if
we need it or not.

Signed-off-by: default avatarGilad Ben-Yossef <gilad@benyossef.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 6429ccdd

drivers/crypto/ccree/cc_aead.c

+6 −6
Original line number Diff line number Diff line
@@ -1800,12 +1800,6 @@ static int cc_gcm(struct aead_request *req, struct cc_hw_desc desc[], 
	struct aead_req_ctx *req_ctx = aead_request_ctx(req);

	unsigned int cipher_flow_mode;



	if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {

		cipher_flow_mode = AES_and_HASH;

	} else { /* Encrypt */

		cipher_flow_mode = AES_to_HASH_and_DOUT;

	}



	//in RFC4543 no data to encrypt. just copy data from src to dest.

	if (req_ctx->plaintext_authenticate_only) {

		cc_proc_cipher_desc(req, BYPASS, desc, seq_size);
@@ -1817,6 +1811,12 @@ static int cc_gcm(struct aead_request *req, struct cc_hw_desc desc[], 
		return 0;

	}



	if (req_ctx->gen_ctx.op_type == DRV_CRYPTO_DIRECTION_DECRYPT) {

		cipher_flow_mode = AES_and_HASH;

	} else { /* Encrypt */

		cipher_flow_mode = AES_to_HASH_and_DOUT;

	}



	// for gcm and rfc4106.

	cc_set_ghash_desc(req, desc, seq_size);

	/* process(ghash) assoc data */

CRA Git | Maintained and supported by SUSTech CRA and CCSE