From 8475c8118551f806176b5af4d0e8657a5f015b95 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Sun, 11 Sep 2016 19:35:41 +0200 Subject: scsi: sd: Move DIF protection types to t10-pi.h These should go together with the rest of the T10 protection information defintions. [mkp: s/T10_DIF/T10_PI/] Signed-off-by: Christoph Hellwig Reviewed-by: Bart Van Assche Signed-off-by: Martin K. Petersen --- include/linux/t10-pi.h | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'include/linux') diff --git a/include/linux/t10-pi.h b/include/linux/t10-pi.h index dd8de82cf5b5..9fba9dd33544 100644 --- a/include/linux/t10-pi.h +++ b/include/linux/t10-pi.h @@ -4,6 +4,26 @@ #include #include +/* + * A T10 PI-capable target device can be formatted with different + * protection schemes. Currently 0 through 3 are defined: + * + * Type 0 is regular (unprotected) I/O + * + * Type 1 defines the contents of the guard and reference tags + * + * Type 2 defines the contents of the guard and reference tags and + * uses 32-byte commands to seed the latter + * + * Type 3 defines the contents of the guard tag only + */ +enum t10_dif_type { + T10_PI_TYPE0_PROTECTION = 0x0, + T10_PI_TYPE1_PROTECTION = 0x1, + T10_PI_TYPE2_PROTECTION = 0x2, + T10_PI_TYPE3_PROTECTION = 0x3, +}; + /* * T10 Protection Information tuple. */ -- cgit v1.2.3