[PATCH 17/22] crypto: chelsio - add check for xts input length equal to zero
From: Andrei Botila <andrei.botila@oss.nxp.com>
Date: 2020-08-07 16:23:11
Also in:
linux-arm-kernel, linux-s390, linuxppc-dev, lkml
Subsystem:
crypto api, the rest · Maintainers:
Herbert Xu, "David S. Miller", 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: Ayush Sawal <ayush.sawal@chelsio.com> Cc: Vinay Kumar Yadav <redacted> Cc: Rohit Maheshwari <redacted> Signed-off-by: Andrei Botila <redacted> --- drivers/crypto/chelsio/chcr_algo.c | 4 ++++ 1 file changed, 4 insertions(+)
diff --git a/drivers/crypto/chelsio/chcr_algo.c b/drivers/crypto/chelsio/chcr_algo.c
index 13b908ea4873..e9746580870a 100644
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c@@ -1372,8 +1372,12 @@ static int chcr_aes_encrypt(struct skcipher_request *req) int err; struct uld_ctx *u_ctx = ULD_CTX(c_ctx(tfm)); struct chcr_context *ctx = c_ctx(tfm); + int subtype = get_cryptoalg_subtype(tfm); unsigned int cpu; + if (!req->cryptlen && subtype == CRYPTO_ALG_SUB_TYPE_XTS) + return 0; + cpu = get_cpu(); reqctx->txqidx = cpu % ctx->ntxq; reqctx->rxqidx = cpu % ctx->nrxq;
--
2.17.1