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From: Thara Gopinath <thara.gopinath@linaro.org>
To: herbert@gondor.apana.org.au, davem@davemloft.net,
	bjorn.andersson@linaro.org
Cc: ebiggers@google.com, ardb@kernel.org, sivaprak@codeaurora.org,
	linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
	linux-arm-msm@vger.kernel.org
Subject: [Patch v2 1/7] crypto: qce: common: Add MAC failed error checking
Date: Sat, 17 Apr 2021 09:24:57 -0400	[thread overview]
Message-ID: <20210417132503.1401128-2-thara.gopinath@linaro.org> (raw)
In-Reply-To: <20210417132503.1401128-1-thara.gopinath@linaro.org>

MAC_FAILED gets set in the status register if authenthication fails
for ccm algorithms(during decryption). Add support to catch and flag
this error.

Signed-off-by: Thara Gopinath <thara.gopinath@linaro.org>
---

v1->v2:
	- Split the error checking for -ENXIO and -EBADMSG into if-else clause
	  so that the code is more readable as per Bjorn's review comment.

 drivers/crypto/qce/common.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/crypto/qce/common.c b/drivers/crypto/qce/common.c
index dceb9579d87a..dd76175d5c62 100644
--- a/drivers/crypto/qce/common.c
+++ b/drivers/crypto/qce/common.c
@@ -419,6 +419,8 @@ int qce_check_status(struct qce_device *qce, u32 *status)
 	 */
 	if (*status & STATUS_ERRORS || !(*status & BIT(OPERATION_DONE_SHIFT)))
 		ret = -ENXIO;
+	else if (*status & BIT(MAC_FAILED_SHIFT))
+		ret = -EBADMSG;
 
 	return ret;
 }
-- 
2.25.1


  reply	other threads:[~2021-04-17 13:25 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-17 13:24 [Patch v2 0/7] Add support for AEAD algorithms in Qualcomm Crypto Engine driver Thara Gopinath
2021-04-17 13:24 ` Thara Gopinath [this message]
2021-04-19  3:02   ` [Patch v2 1/7] crypto: qce: common: Add MAC failed error checking Bjorn Andersson
2021-04-17 13:24 ` [Patch v2 2/7] crypto: qce: common: Make result dump optional Thara Gopinath
2021-04-17 13:24 ` [Patch v2 3/7] crypto: qce: Add mode for rfc4309 Thara Gopinath
2021-04-19  3:03   ` Bjorn Andersson
2021-04-17 13:25 ` [Patch v2 4/7] crypto: qce: Add support for AEAD algorithms Thara Gopinath
2021-04-17 13:25 ` [Patch v2 5/7] crypto: qce: common: Clean up qce_auth_cfg Thara Gopinath
2021-04-17 13:25 ` [Patch v2 6/7] crypto: qce: common: Add support for AEAD algorithms Thara Gopinath
2021-04-17 15:38   ` kernel test robot
2021-04-17 15:38     ` kernel test robot
2021-04-19  3:16   ` Bjorn Andersson
2021-04-17 13:25 ` [Patch v2 7/7] crypto: qce: aead: Schedule fallback algorithm Thara Gopinath

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