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| author |   Akinobu Mita <akinobu.mita@gmail.com> | 2015-05-01 15:23:50 +0900 |
|---|---|---|
| committer |   Nicholas Bellinger <nab@linux-iscsi.org> | 2015-05-30 22:42:24 -0700 |
| commit | 10081fb532a2a2216b7d8e4ad585c985075b6f60 (patch) | |
| tree | dd411d2d81331e2ac002c5d5389d2cd3bb201389 /include/linux/crc-t10dif.h | |
| parent | target: ensure se_cmd->t_prot_sg is allocated when required (diff) | |
| download | linux-dev-10081fb532a2a2216b7d8e4ad585c985075b6f60.tar.xz linux-dev-10081fb532a2a2216b7d8e4ad585c985075b6f60.zip | |
lib: introduce crc_t10dif_update()
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 <akinobu.mita@gmail.com>
Acked-by: Martin K. Petersen <martin.petersen@oracle.com>
Cc: Tim Chen <tim.c.chen@linux.intel.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Cc: Nicholas Bellinger <nab@linux-iscsi.org>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: target-devel@vger.kernel.org
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'include/linux/crc-t10dif.h')
| -rw-r--r-- | include/linux/crc-t10dif.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/crc-t10dif.h b/include/linux/crc-t10dif.h index cf53d0773ce3..d81961e9e37d 100644 --- a/include/linux/crc-t10dif.h +++ b/include/linux/crc-t10dif.h @@ -9,5 +9,6 @@ extern __u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer, size_t len); extern __u16 crc_t10dif(unsigned char const *, size_t); +extern __u16 crc_t10dif_update(__u16 crc, unsigned char const *, size_t); #endif |