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[PATCH v2 0/4] Introduce bulk mode for crypto engine framework

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  [PATCH v2 0/4] Introduce bulk mode for crypto engine framework Baolin Wang <baolin.wang@linaro.org> - 2016-03-15 08:50 +0100
    [PATCH v2 4/4] md: dm-crypt: Initialize the sector number for one request Baolin Wang <baolin.wang@linaro.org> - 2016-03-15 09:00 +0100

#1357872 — [PATCH v2 0/4] Introduce bulk mode for crypto engine framework

Now some cipher hardware engines prefer to handle bulk block by merging requests
to increase the block size and thus increase the hardware engine processing speed.

This patchset introduces request bulk mode to help the crypto hardware drivers
improve in efficiency.

Changes since v1:
 - Modify the sg_is_contiguous() function.

Baolin Wang (4):
  scatterlist: Introduce some helper functions
  crypto: Introduce some helper functions to help to merge requests
  crypto: Introduce the bulk mode for crypto engine framework
  md: dm-crypt: Initialize the sector number for one request

 crypto/Kconfig               |    1 +
 crypto/ablk_helper.c         |  135 ++++++++++++++++++++++++++++++++++++++++++
 crypto/crypto_engine.c       |  122 +++++++++++++++++++++++++++++++++++++-
 drivers/crypto/omap-aes.c    |    2 +-
 drivers/md/dm-crypt.c        |    1 +
 include/crypto/ablk_helper.h |    3 +
 include/crypto/algapi.h      |   23 ++++++-
 include/linux/crypto.h       |    5 ++
 include/linux/scatterlist.h  |   33 +++++++++++
 lib/scatterlist.c            |   69 +++++++++++++++++++++
 10 files changed, 389 insertions(+), 5 deletions(-)

-- 
1.7.9.5

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#1357874 — [PATCH v2 4/4] md: dm-crypt: Initialize the sector number for one request

If the crypto engine can support the bulk mode, that means the contiguous
requests from one block can be merged into one request to be handled by
crypto engine. If so, the crypto engine need the sector number of one request
to do merging action.

Signed-off-by: Baolin Wang <baolin.wang@linaro.org>
---
 drivers/md/dm-crypt.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/md/dm-crypt.c b/drivers/md/dm-crypt.c
index 3147c8d..9e2dbfd 100644
--- a/drivers/md/dm-crypt.c
+++ b/drivers/md/dm-crypt.c
@@ -866,6 +866,7 @@ static int crypt_convert_block(struct crypt_config *cc,
 			return r;
 	}
 
+	req->sector = ctx->cc_sector;
 	ablkcipher_request_set_crypt(req, &dmreq->sg_in, &dmreq->sg_out,
 				     1 << SECTOR_SHIFT, iv);
 
-- 
1.7.9.5

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