GitHub-Mirror/linux-bl808
2
0
Fork 0
mirror of https://github.com/Fishwaldo/linux-bl808.git synced 2025-06-17 20:25:19 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

crc-t10dif: Pick better transform if one becomes available

Browse source 
T10 CRC library is linked into the kernel thanks to block and SCSI. The
crypto accelerators are typically loaded later as modules and are
therefore not available when the T10 CRC library is initialized.

Use the crypto notifier facility to trigger a switch to a better algorithm
if one becomes available after the initial hash has been registered. Use
RCU to protect the original transform while the new one is being set up.

Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org
Suggested-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Martin K. Petersen 2018-08-30 11:00:15 -04:00 • committed by Herbert Xu
parent dd8b083f9a
commit b76377543b
2 changed files with 45 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/linux/crc-t10dif.h
View file

@ -6,6 +6,7 @@
#define CRC_T10DIF_DIGEST_SIZE 2
#define CRC_T10DIF_BLOCK_SIZE 1
#define CRC_T10DIF_STRING "crct10dif"
extern __u16 crc_t10dif_generic(__u16 crc, const unsigned char *buffer,
size_t len);