1 #ifndef _LINUX_T10_PI_H
2 #define _LINUX_T10_PI_H
4 #include <linux/types.h>
5 #include <linux/blkdev.h>
8 * A T10 PI-capable target device can be formatted with different
9 * protection schemes. Currently 0 through 3 are defined:
11 * Type 0 is regular (unprotected) I/O
13 * Type 1 defines the contents of the guard and reference tags
15 * Type 2 defines the contents of the guard and reference tags and
16 * uses 32-byte commands to seed the latter
18 * Type 3 defines the contents of the guard tag only
21 T10_PI_TYPE0_PROTECTION
= 0x0,
22 T10_PI_TYPE1_PROTECTION
= 0x1,
23 T10_PI_TYPE2_PROTECTION
= 0x2,
24 T10_PI_TYPE3_PROTECTION
= 0x3,
28 * T10 Protection Information tuple.
31 __be16 guard_tag
; /* Checksum */
32 __be16 app_tag
; /* Opaque storage */
33 __be32 ref_tag
; /* Target LBA or indirect LBA */
37 extern struct blk_integrity_profile t10_pi_type1_crc
;
38 extern struct blk_integrity_profile t10_pi_type1_ip
;
39 extern struct blk_integrity_profile t10_pi_type3_crc
;
40 extern struct blk_integrity_profile t10_pi_type3_ip
;