From: Atul Gupta <atul.gupta@chelsio.com>
Date: Thu, 2 May 2019 03:47:57 -0700
Subject: crypto: chelsio - count incomplete block in IV
Patch-mainline: v5.2-rc1
Git-commit: 0a4491d3febe0b8c328870d1909fc91756970237
References: bsc#1136353 jsc#SLE-4688
The partial block should count as one and appropriately appended
to IV. eg 499B for AES CTR should count 32 block than 31 and
correct count value is updated in iv out.
Signed-off-by: Atul Gupta <atul.gupta@chelsio.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Acked-by: Thomas Bogendoerfer <tbogendoerfer@suse.de>
---
drivers/crypto/chelsio/chcr_algo.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/crypto/chelsio/chcr_algo.c
+++ b/drivers/crypto/chelsio/chcr_algo.c
@@ -1094,8 +1094,8 @@ static int chcr_final_cipher_iv(struct a
int ret = 0;
if (subtype == CRYPTO_ALG_SUB_TYPE_CTR)
- ctr_add_iv(iv, req->info, (reqctx->processed /
- AES_BLOCK_SIZE));
+ ctr_add_iv(iv, req->info, DIV_ROUND_UP(reqctx->processed,
+ AES_BLOCK_SIZE));
else if (subtype == CRYPTO_ALG_SUB_TYPE_XTS)
ret = chcr_update_tweak(req, iv, 1);
else if (subtype == CRYPTO_ALG_SUB_TYPE_CBC) {