From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: From: Andrei Botila Subject: [PATCH 20/22] crypto: octeontx - add check for xts input length equal to zero Date: Fri, 7 Aug 2020 19:20:08 +0300 Message-Id: <20200807162010.18979-21-andrei.botila@oss.nxp.com> In-Reply-To: <20200807162010.18979-1-andrei.botila@oss.nxp.com> References: <20200807162010.18979-1-andrei.botila@oss.nxp.com> Content-Type: text/plain MIME-Version: 1.0 Sender: linux-kernel-owner@vger.kernel.org List-ID: To: Herbert Xu , "David S. Miller" Cc: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, x86@kernel.org, linux-arm-kernel@axis.com, Andrei Botila , Boris Brezillon , Arnaud Ebalard , Srujana Challa From: Andrei Botila Standardize the way input lengths equal to 0 are handled in all skcipher algorithms. All the algorithms return 0 for input lengths equal to zero. Cc: Boris Brezillon Cc: Arnaud Ebalard Cc: Srujana Challa Signed-off-by: Andrei Botila --- drivers/crypto/marvell/octeontx/otx_cptvf_algs.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c b/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c index 90bb31329d4b..ec13bc3f1766 100644 --- a/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c +++ b/drivers/crypto/marvell/octeontx/otx_cptvf_algs.c @@ -340,11 +340,16 @@ static inline int cpt_enc_dec(struct skcipher_request *req, u32 enc) { struct crypto_skcipher *stfm = crypto_skcipher_reqtfm(req); struct otx_cpt_req_ctx *rctx = skcipher_request_ctx(req); + struct crypto_tfm *tfm = crypto_skcipher_tfm(stfm); + struct otx_cpt_enc_ctx *ctx = crypto_tfm_ctx(tfm); struct otx_cpt_req_info *req_info = &rctx->cpt_req; u32 enc_iv_len = crypto_skcipher_ivsize(stfm); struct pci_dev *pdev; int status, cpu_num; + if (!req->cryptlen && ctx->cipher_type == OTX_CPT_AES_XTS) + return 0; + /* Validate that request doesn't exceed maximum CPT supported size */ if (req->cryptlen > OTX_CPT_MAX_REQ_SIZE) return -E2BIG; -- 2.17.1