bsg: add SCSI transport-level request support

This enables bsg to handle SCSI transport-level request like SAS
management protocol (SMP).

- add BSG_SUB_PROTOCOL_{SCSI_CMD, SCSI_TMF, SCSI_TRANSPORT} definitions.
- SCSI transport-level requests skip blk_verify_command().

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

1 files changed, 6 insertions, 0 deletions

diff --git a/include/linux/bsg.h b/include/linux/bsg.h
index 0dd01f90ba5..bd998ca6cb2 100644
--- a/include/linux/bsg.h
+++ b/include/linux/bsg.h
@@ -1,6 +1,12 @@
 #ifndef BSG_H
 #define BSG_H
 
+#define BSG_PROTOCOL_SCSI               0
+
+#define BSG_SUB_PROTOCOL_SCSI_CMD       0
+#define BSG_SUB_PROTOCOL_SCSI_TMF       1
+#define BSG_SUB_PROTOCOL_SCSI_TRANSPORT 2
+
 struct sg_io_v4 {
         __s32 guard;            /* [i] 'Q' to differentiate from v3 */
         __u32 protocol;         /* [i] 0 -> SCSI , .... */