linux-toradex.git/lib/crc-t10dif.c, branch v4.9.90

lib: introduce crc_t10dif_update()

2015-05-31T05:42:24+00:00

This introduces crc_t10dif_update() which enables to calculate CRC
for a block which straddles multiple SG elements by calling multiple
times.  This also converts crc_t10dif() to use crc_t10dif_update() as
they are almost same.

(remove extra function call in crc_t10dif() and crc_t10dif_update -
 Tim + Herbert)

Signed-off-by: Akinobu Mita 
Acked-by: Martin K. Petersen 
Cc: Tim Chen 
Cc: Herbert Xu 
Cc: "David S. Miller" 
Cc: linux-crypto@vger.kernel.org
Cc: Nicholas Bellinger 
Cc: Sagi Grimberg 
Cc: "Martin K. Petersen" 
Cc: Christoph Hellwig 
Cc: "James E.J. Bottomley" 
Cc: target-devel@vger.kernel.org
Signed-off-by: Nicholas Bellinger

crypto: crct10dif - Add fallback for broken initrds

2013-09-12T05:31:34+00:00

Unfortunately, even with a softdep some distros fail to include
the necessary modules in the initrd.  Therefore this patch adds
a fallback path to restore existing behaviour where we cannot
load the new crypto crct10dif algorithm.

In order to do this, the underlying crct10dif has been split out
from the crypto implementation so that it can be used on the
fallback path.

Signed-off-by: Herbert Xu

Reinstate "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"

2013-09-07T02:56:26+00:00

This patch reinstates commits
	67822649d7305caf3dd50ed46c27b99c94eff996
	39761214eefc6b070f29402aa1165f24d789b3f7
	0b95a7f85718adcbba36407ef88bba0a7379ed03
	31d939625a9a20b1badd2d4e6bf6fd39fa523405
	2d31e518a42828df7877bca23a958627d60408bc

Now that module softdeps are in the kernel we can use that to resolve
the boot issue which cause the revert.

Signed-off-by: Herbert Xu

Revert "crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework"

2013-07-24T07:04:16+00:00

This reverts commits
    67822649d7305caf3dd50ed46c27b99c94eff996
    39761214eefc6b070f29402aa1165f24d789b3f7
    0b95a7f85718adcbba36407ef88bba0a7379ed03
    31d939625a9a20b1badd2d4e6bf6fd39fa523405
    2d31e518a42828df7877bca23a958627d60408bc

Unfortunately this change broke boot on some systems that used an
initrd which does not include the newly created crct10dif modules.
As these modules are required by sd_mod under certain configurations
this is a serious problem.

Signed-off-by: Herbert Xu

crypto: crct10dif - Use PTR_RET

2013-06-05T08:27:51+00:00

lib/crc-t10dif.c:42:1-3: WARNING: PTR_RET can be used

 Use PTR_RET rather than if(IS_ERR(...)) + PTR_ERR

Generated by: coccinelle/api/ptr_ret.cocci

Reported-by: Fengguang Wu 
Signed-off-by: Herbert Xu

crypto: crct10dif - Wrap crc_t10dif function all to use crypto transform framework

2013-05-20T12:11:01+00:00

When CRC T10 DIF is calculated using the crypto transform framework, we
wrap the crc_t10dif function call to utilize it.  This allows us to
take advantage of any accelerated CRC T10 DIF transform that is
plugged into the crypto framework.

Signed-off-by: Tim Chen 
Signed-off-by: Herbert Xu

[SCSI] lib: Add support for the T10 (SCSI) Data Integrity Field CRC

2008-07-12T13:22:32+00:00

The SCSI Block Protocol uses this 16-bit CRC to verify the integrity
of each data sector.  crc_t10dif() is used by sd_dif.c when performing
I/O to or from disks formatted with protection information.

Signed-off-by: Martin K. Petersen 
Signed-off-by: James Bottomley