Commit f939b88c authored by Harsh Jain's avatar Harsh Jain Committed by Herbert Xu
Browse files

crypto: xilinx - Avoid Encrypt request to fallback for authsize < 16 



Encrypt requests can be handled by driver when authsize is less than 16.

Signed-off-by: default avatarHarsh Jain <h.jain@amd.com>
Signed-off-by: default avatarHerbert Xu <herbert@gondor.apana.org.au>
parent 349f0d32

drivers/crypto/xilinx/zynqmp-aes-gcm.c

+3 −3
Original line number Diff line number Diff line
@@ -150,7 +150,7 @@ static int zynqmp_aes_aead_cipher(struct aead_request *req) 
		}

	} else {

		if (hwreq->op == ZYNQMP_AES_ENCRYPT)

			data_size = data_size + ZYNQMP_AES_AUTH_SIZE;

			data_size = data_size + crypto_aead_authsize(aead);

		else

			data_size = data_size - ZYNQMP_AES_AUTH_SIZE;
@@ -178,8 +178,8 @@ static int zynqmp_fallback_check(struct zynqmp_aead_tfm_ctx *tfm_ctx, 
	int need_fallback = 0;

	struct zynqmp_aead_req_ctx *rq_ctx = aead_request_ctx(req);



	if (tfm_ctx->authsize != ZYNQMP_AES_AUTH_SIZE)

		need_fallback = 1;

	if (tfm_ctx->authsize != ZYNQMP_AES_AUTH_SIZE && rq_ctx->op == ZYNQMP_AES_DECRYPT)

		return 1;



	if (tfm_ctx->keysrc == ZYNQMP_AES_KUP_KEY &&

	    tfm_ctx->keylen != ZYNQMP_AES_KEY_SIZE) {