From: Corentin Labbe <clabbe@baylibre.com>
To: herbert@gondor.apana.org.au, jernej.skrabec@gmail.com,
samuel@sholland.org, wens@csie.org
Cc: linux-arm-kernel@lists.infradead.org,
linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-sunxi@lists.linux.dev, Corentin Labbe <clabbe@baylibre.com>
Subject: [PATCH v2 10/19] crypto: sun8i-ss: do not zeroize all pad
Date: Mon, 2 May 2022 20:19:20 +0000 [thread overview]
Message-ID: <20220502201929.843194-11-clabbe@baylibre.com> (raw)
In-Reply-To: <20220502201929.843194-1-clabbe@baylibre.com>
Instead of memset all pad buffer, it is faster to only put 0 where
needed.
Signed-off-by: Corentin Labbe <clabbe@baylibre.com>
---
drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
index 9582ac450d08..53e5bfb99c93 100644
--- a/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
+++ b/drivers/crypto/allwinner/sun8i-ss/sun8i-ss-hash.c
@@ -319,7 +319,7 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
unsigned int len;
u64 fill, min_fill, byte_count;
void *pad, *result;
- int j, i, todo;
+ int j, i, k, todo;
__be64 *bebits;
__le64 *lebits;
dma_addr_t addr_res, addr_pad;
@@ -334,7 +334,6 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
result = ss->flows[rctx->flow].result;
pad = ss->flows[rctx->flow].pad;
- memset(pad, 0, algt->alg.hash.halg.base.cra_blocksize * 2);
bf = (__le32 *)pad;
for (i = 0; i < MAX_SG; i++) {
@@ -395,7 +394,10 @@ int sun8i_ss_hash_run(struct crypto_engine *engine, void *breq)
if (fill < min_fill)
fill += 64;
+ k = j;
j += (fill - min_fill) / sizeof(u32);
+ for (; k < j; k++)
+ bf[k] = 0;
switch (algt->ss_algo_id) {
case SS_ID_HASH_MD5:
--
2.35.1
next prev parent reply other threads:[~2022-05-02 20:22 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-02 20:19 [PATCH v2 00/19] crypto: allwinner: lots of fixes Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 01/19] crypto: sun8i-ce: Fix minor style issue Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 02/19] crypto: sun8i-ce: do not allocate memory when handling requests Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 03/19] crypto: sun4i-ss: do not allocate backup IV on requests Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 04/19] crypto: sun8i-ss: rework handling of IV Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 05/19] crypto: sun8i-ss: handle zero sized sg Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 06/19] crypto: sun8i-ss: remove redundant test Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 07/19] crypto: sun8i-ss: test error before assigning Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 08/19] crypto: sun8i-ss: use sg_nents_for_len Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 09/19] crypto: sun8i-ss: do not allocate memory when handling hash requests Corentin Labbe
2022-05-02 20:19 ` Corentin Labbe [this message]
2022-05-02 20:19 ` [PATCH v2 11/19] crypto: sun8i-ss: handle requests if last block is not modulo 64 Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 12/19] crypto: sun8i-ss: rework debugging Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 13/19] crypto: sun8i-ss: Add function for handling hash padding Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 14/19] crypto: sun8i-ss: add hmac(sha1) Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 15/19] crypto: sun8i-ss: do not fallback if cryptlen is less than sg length Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 16/19] crypto: sun8i-ce: Add function for handling hash padding Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 17/19] crypto: sun8i-ce: use sg_nents_for_len Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 18/19] crypto: sun8i-ce: rework debugging Corentin Labbe
2022-05-02 20:19 ` [PATCH v2 19/19] crypto: sun8i-ce: do not fallback if cryptlen is less than sg length Corentin Labbe
2022-05-13 9:34 ` [PATCH v2 00/19] crypto: allwinner: lots of fixes Herbert Xu
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