[PATCH 20/22] crypto: octeontx - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:22:49
Also in:
linux-crypto, linux-s390, linuxppc-dev, lkml
Subsystem:
crypto api, marvell crypto driver, the rest · Maintainers:
Herbert Xu, "David S. Miller", Srujana Challa, Bharat Bhushan, Linus Torvalds
From: Andrei Botila <redacted> 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 <bbrezillon@kernel.org> Cc: Arnaud Ebalard <redacted> Cc: Srujana Challa <schalla@marvell.com> Signed-off-by: Andrei Botila <redacted> --- 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
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