2019-02-19 16:02:56

by Kamil Konieczny

Subject: [PATCH v2] crypto: s5p: update iv after AES-CBC op end

Fix bug "s5p-sss crypto driver doesn't set next AES-CBC IV". While at this,
fix also AES-CTR mode. Tested on Odroid U3 with Eric Biggers branch
"iv-out-testing".

Signed-off-by: Kamil Konieczny <[email protected]>
Reported-by: Eric Biggers <[email protected]>
---
Changes since v1:
- reworded Subject and commit message
- changed code according to comments by Krzysztof Kozlowski
- added Reported-by line
---
drivers/crypto/s5p-sss.c | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/drivers/crypto/s5p-sss.c b/drivers/crypto/s5p-sss.c
index 0064be0e3941..30b4f1015d8f 100644
--- a/drivers/crypto/s5p-sss.c
+++ b/drivers/crypto/s5p-sss.c
@@ -463,6 +463,9 @@ static void s5p_sg_copy_buf(void *buf, struct scatterlist *sg,

static void s5p_sg_done(struct s5p_aes_dev *dev)
{
+ struct ablkcipher_request *req = dev->req;
+ struct s5p_aes_reqctx *reqctx = ablkcipher_request_ctx(req);
+
if (dev->sg_dst_cpy) {
dev_dbg(dev->dev,
"Copying %d bytes of output data back to original place\n",
@@ -472,6 +475,11 @@ static void s5p_sg_done(struct s5p_aes_dev *dev)
}
s5p_free_sg_cpy(dev, &dev->sg_src_cpy);
s5p_free_sg_cpy(dev, &dev->sg_dst_cpy);
+ if (reqctx->mode & FLAGS_AES_CBC)
+ memcpy_fromio(req->info, dev->aes_ioaddr + SSS_REG_AES_IV_DATA(0), AES_BLOCK_SIZE);
+
+ else if (reqctx->mode & FLAGS_AES_CTR)
+ memcpy_fromio(req->info, dev->aes_ioaddr + SSS_REG_AES_CNT_DATA(0), AES_BLOCK_SIZE);
}

/* Calls the completion. Cannot be called with dev->lock hold. */
--
2.20.1

2019-02-19 16:41:28

by Krzysztof Kozlowski

Subject: Re: [PATCH v2] crypto: s5p: update iv after AES-CBC op end

On Tue, 19 Feb 2019 at 17:02, Kamil Konieczny
<[email protected]> wrote:
>
> Fix bug "s5p-sss crypto driver doesn't set next AES-CBC IV". While at this,
> fix also AES-CTR mode. Tested on Odroid U3 with Eric Biggers branch
> "iv-out-testing".
>
> Signed-off-by: Kamil Konieczny <[email protected]>
> Reported-by: Eric Biggers <[email protected]>
> ---
> Changes since v1:
> - reworded Subject and commit message
> - changed code according to comments by Krzysztof Kozlowski
> - added Reported-by line
> ---
> drivers/crypto/s5p-sss.c | 8 ++++++++
> 1 file changed, 8 insertions(+)

Reviewed-by: Krzysztof Kozlowski <[email protected]>

Best regards,
Krzysztof

2019-02-28 06:30:30

by Herbert Xu

Subject: Re: [PATCH v2] crypto: s5p: update iv after AES-CBC op end

On Tue, Feb 19, 2019 at 05:02:32PM +0100, Kamil Konieczny wrote:
> Fix bug "s5p-sss crypto driver doesn't set next AES-CBC IV". While at this,
> fix also AES-CTR mode. Tested on Odroid U3 with Eric Biggers branch
> "iv-out-testing".
>
> Signed-off-by: Kamil Konieczny <[email protected]>
> Reported-by: Eric Biggers <[email protected]>
> ---
> Changes since v1:
> - reworded Subject and commit message
> - changed code according to comments by Krzysztof Kozlowski
> - added Reported-by line
> ---
> drivers/crypto/s5p-sss.c | 8 ++++++++
> 1 file changed, 8 insertions(+)

Patch applied. Thanks.
--
Email: Herbert Xu <[email protected]>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt