Hi,
Here is few patches with couple of important fixes...
Regards,
Dmitry
Dmitry Kasatkin (3):
crypto: omap-sham - remove debug print
crypto: omap-sham - enable driver for EMU chips
crypto: omap-sham - hmac calculation bug fix for sha1 base hash
Markku Kylanpaa (1):
crypto: omap-sham - fix concurrent sha1 calculations
drivers/crypto/omap-sham.c | 78 +++++++++++++++++++-------------------------
1 files changed, 34 insertions(+), 44 deletions(-)
EMU chips also have crypto HW as HS chips.
Signed-off-by: Dmitry Kasatkin <[email protected]>
---
drivers/crypto/omap-sham.c | 3 ++-
1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 50aca41..f5c01dc 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -1295,7 +1295,8 @@ static int __init omap_sham_mod_init(void)
pr_info("loading %s driver\n", "omap-sham");
if (!cpu_class_is_omap2() ||
- omap_type() != OMAP2_DEVICE_TYPE_SEC) {
+ (omap_type() != OMAP2_DEVICE_TYPE_SEC &&
+ omap_type() != OMAP2_DEVICE_TYPE_EMU)) {
pr_err("Unsupported cpu\n");
return -ENODEV;
}
--
1.7.1
Signed-off-by: Dmitry Kasatkin <[email protected]>
---
drivers/crypto/omap-sham.c | 2 --
1 files changed, 0 insertions(+), 2 deletions(-)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index e36032b..50aca41 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -890,8 +890,6 @@ static int omap_sham_cra_init_alg(struct crypto_tfm *tfm, const char *alg_base)
struct omap_sham_ctx *tctx = crypto_tfm_ctx(tfm);
const char *alg_name = crypto_tfm_alg_name(tfm);
- pr_info("enter\n");
-
/* Allocate a fallback and abort if it failed. */
tctx->fallback = crypto_alloc_shash(alg_name, 0,
CRYPTO_ALG_NEED_FALLBACK);
--
1.7.1
This patch fixes 2 hmac inter-dependent bugs.
1. "omap-sham: hash-in-progress is stored in hw format" commit introduced
optimization where temporary hash had been stored in OMAP specific format
(big endian).
For SHA1 it is different to real hash format, which is little endian.
Final HMAC value was calculated using incorrect hash.
Because CONFIG_CRYPTO_MANAGER_TESTS was disabled this error remained
unnoticed. After enabling this option, bug has been found.
2. HMAC was calculated using temporrary hash value.
For a single-request updates, temporary hash was the final one and
HMAC result was correct. But in fact only the final hash had to be used.
All crypto tests for HMAC produces only single request and
could not catch the problem. This problem is fixed here.
Signed-off-by: Dmitry Kasatkin <[email protected]>
---
drivers/crypto/omap-sham.c | 71 +++++++++++++++++++------------------------
1 files changed, 31 insertions(+), 40 deletions(-)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index f5c01dc..ba8f1ea 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -78,7 +78,6 @@
#define FLAGS_SHA1 0x0010
#define FLAGS_DMA_ACTIVE 0x0020
#define FLAGS_OUTPUT_READY 0x0040
-#define FLAGS_CLEAN 0x0080
#define FLAGS_INIT 0x0100
#define FLAGS_CPU 0x0200
#define FLAGS_HMAC 0x0400
@@ -511,26 +510,6 @@ static int omap_sham_update_dma_stop(struct omap_sham_dev *dd)
return 0;
}
-static void omap_sham_cleanup(struct ahash_request *req)
-{
- struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
- struct omap_sham_dev *dd = ctx->dd;
- unsigned long flags;
-
- spin_lock_irqsave(&dd->lock, flags);
- if (ctx->flags & FLAGS_CLEAN) {
- spin_unlock_irqrestore(&dd->lock, flags);
- return;
- }
- ctx->flags |= FLAGS_CLEAN;
- spin_unlock_irqrestore(&dd->lock, flags);
-
- if (ctx->digcnt)
- omap_sham_copy_ready_hash(req);
-
- dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt);
-}
-
static int omap_sham_init(struct ahash_request *req)
{
struct crypto_ahash *tfm = crypto_ahash_reqtfm(req);
@@ -618,9 +597,8 @@ static int omap_sham_final_req(struct omap_sham_dev *dd)
return err;
}
-static int omap_sham_finish_req_hmac(struct ahash_request *req)
+static int omap_sham_finish_hmac(struct ahash_request *req)
{
- struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
struct omap_sham_ctx *tctx = crypto_tfm_ctx(req->base.tfm);
struct omap_sham_hmac_ctx *bctx = tctx->base;
int bs = crypto_shash_blocksize(bctx->shash);
@@ -635,7 +613,24 @@ static int omap_sham_finish_req_hmac(struct ahash_request *req)
return crypto_shash_init(&desc.shash) ?:
crypto_shash_update(&desc.shash, bctx->opad, bs) ?:
- crypto_shash_finup(&desc.shash, ctx->digest, ds, ctx->digest);
+ crypto_shash_finup(&desc.shash, req->result, ds, req->result);
+}
+
+static int omap_sham_finish(struct ahash_request *req)
+{
+ struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
+ struct omap_sham_dev *dd = ctx->dd;
+ int err = 0;
+
+ if (ctx->digcnt) {
+ omap_sham_copy_ready_hash(req);
+ if (ctx->flags & FLAGS_HMAC)
+ err = omap_sham_finish_hmac(req);
+ }
+
+ dev_dbg(dd->dev, "digcnt: %d, bufcnt: %d\n", ctx->digcnt, ctx->bufcnt);
+
+ return err;
}
static void omap_sham_finish_req(struct ahash_request *req, int err)
@@ -645,15 +640,12 @@ static void omap_sham_finish_req(struct ahash_request *req, int err)
if (!err) {
omap_sham_copy_hash(ctx->dd->req, 1);
- if (ctx->flags & FLAGS_HMAC)
- err = omap_sham_finish_req_hmac(req);
+ if (ctx->flags & FLAGS_FINAL)
+ err = omap_sham_finish(req);
} else {
ctx->flags |= FLAGS_ERROR;
}
- if ((ctx->flags & FLAGS_FINAL) || err)
- omap_sham_cleanup(req);
-
clk_disable(dd->iclk);
dd->flags &= ~FLAGS_BUSY;
@@ -809,22 +801,21 @@ static int omap_sham_final_shash(struct ahash_request *req)
static int omap_sham_final(struct ahash_request *req)
{
struct omap_sham_reqctx *ctx = ahash_request_ctx(req);
- int err = 0;
ctx->flags |= FLAGS_FINUP;
- if (!(ctx->flags & FLAGS_ERROR)) {
- /* OMAP HW accel works only with buffers >= 9 */
- /* HMAC is always >= 9 because of ipad */
- if ((ctx->digcnt + ctx->bufcnt) < 9)
- err = omap_sham_final_shash(req);
- else if (ctx->bufcnt)
- return omap_sham_enqueue(req, OP_FINAL);
- }
+ if (ctx->flags & FLAGS_ERROR)
+ return 0; /* uncompleted hash is not needed */
- omap_sham_cleanup(req);
+ /* OMAP HW accel works only with buffers >= 9 */
+ /* HMAC is always >= 9 because ipad == block size */
+ if ((ctx->digcnt + ctx->bufcnt) < 9)
+ return omap_sham_final_shash(req);
+ else if (ctx->bufcnt)
+ return omap_sham_enqueue(req, OP_FINAL);
- return err;
+ /* copy ready hash (+ finalize hmac) */
+ return omap_sham_finish(req);
}
static int omap_sham_finup(struct ahash_request *req)
--
1.7.1
From: Markku Kylanpaa <[email protected]>
SHA1 accelerator can also be busy. Add -EBUSY status return option and
return busy status from omap_sham_finup().
Signed-off-by: Markku Kylanpaa <[email protected]>
---
drivers/crypto/omap-sham.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 465cde3..e36032b 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c
@@ -835,7 +835,7 @@ static int omap_sham_finup(struct ahash_request *req)
ctx->flags |= FLAGS_FINUP;
err1 = omap_sham_update(req);
- if (err1 == -EINPROGRESS)
+ if (err1 == -EINPROGRESS || err1 == -EBUSY)
return err1;
/*
* final() has to be always called to cleanup resources
--
1.7.1
On Wed, Apr 20, 2011 at 01:34:54PM +0300, Dmitry Kasatkin wrote:
> Hi,
>
> Here is few patches with couple of important fixes...
All 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
Thanks.
On 26/04/11 09:36, ext Herbert Xu wrote:
> On Wed, Apr 20, 2011 at 01:34:54PM +0300, Dmitry Kasatkin wrote:
>> Hi,
>>
>> Here is few patches with couple of important fixes...
> All applied. Thanks!