linux-kernel - [PATCH 2/6] md: dm-crypt: Set cc->iv

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Message-Id: <20240730115838.3507302-3-quic_mdalam@quicinc.com>
Date: Tue, 30 Jul 2024 17:28:34 +0530
From: Md Sadre Alam <quic_mdalam@...cinc.com>
To: axboe@...nel.dk, agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com,
        adrian.hunter@...el.com, quic_asutoshd@...cinc.com,
        ritesh.list@...il.com, ulf.hansson@...aro.org, andersson@...nel.org,
        konrad.dybcio@...aro.org, linux-block@...r.kernel.org,
        linux-kernel@...r.kernel.org, dm-devel@...ts.linux.dev,
        linux-mmc@...r.kernel.org, linux-arm-msm@...r.kernel.org,
        quic_viswanat@...cinc.com, quic_srichara@...cinc.com,
        quic_varada@...cinc.com
Cc: quic_mdalam@...cinc.com
Subject: [PATCH 2/6] md: dm-crypt: Set cc->iv_size to 4 bytes

Set cc->iv_size to 4 bytes instead of 8 bytes, since
this cc->iv_size is passing as data unit bytes to
blk_crypto_init_key(). Since CQHCI driver having
limitation for data unit bytes to 32-bit only.

Signed-off-by: Md Sadre Alam <quic_mdalam@...cinc.com>
---
 drivers/md/dm-crypt.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 37add222b169..c0257d961968 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -2490,7 +2490,7 @@ static int crypt_select_inline_crypt_mode(struct dm_target *ti, char *cipher,
 	}
 
 	if (ivmode == NULL || (strcmp(ivmode, "plain64") == 0)) {
-		cc->iv_size = 8;
+		cc->iv_size = 4;
 	} else {
 		ti->error = "Invalid IV mode for inline_crypt";
 		return -EINVAL;
-- 
2.34.1