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| author | Hannes Reinecke <hare@suse.de> | 2016-03-03 07:54:07 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2016-03-05 17:14:37 -0500 |
| commit | 77c9df9644d7c35516770a21cb56b413e8547d8f (patch) | |
| tree | bb7303df95797e5b6d2b3a6961b079a6725c24e6 /include/scsi | |
| parent | 7e47976bcff23cbe011635e8931855cd3fb3aa6f (diff) | |
| download | linux-77c9df9644d7c35516770a21cb56b413e8547d8f.tar.gz linux-77c9df9644d7c35516770a21cb56b413e8547d8f.tar.bz2 linux-77c9df9644d7c35516770a21cb56b413e8547d8f.zip | |
scsi: Add 'access_state' and 'preferred_path' attribute
Add an 'access_state' field to struct scsi_device and display them in
sysfs as 'access_state' and 'preferred_path' attribute.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Reviewed-by: Bart van Assche <bart.vanassche@sandisk.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'include/scsi')
| -rw-r--r-- | include/scsi/scsi_device.h | 1 | ||||
| -rw-r--r-- | include/scsi/scsi_proto.h | 12 |
2 files changed, 13 insertions, 0 deletions
diff --git a/include/scsi/scsi_device.h b/include/scsi/scsi_device.h index 4af2b240c4d1..c067019ed12a 100644 --- a/include/scsi/scsi_device.h +++ b/include/scsi/scsi_device.h @@ -201,6 +201,7 @@ struct scsi_device { struct scsi_device_handler *handler; void *handler_data; + unsigned char access_state; enum scsi_device_state sdev_state; unsigned long sdev_data[0]; } __attribute__((aligned(sizeof(unsigned long)))); diff --git a/include/scsi/scsi_proto.h b/include/scsi/scsi_proto.h index a9fbf1b38e71..c2ae21cbaa2c 100644 --- a/include/scsi/scsi_proto.h +++ b/include/scsi/scsi_proto.h @@ -277,5 +277,17 @@ struct scsi_lun { __u8 scsi_lun[8]; }; +/* SPC asymmetric access states */ +#define SCSI_ACCESS_STATE_OPTIMAL 0x00 +#define SCSI_ACCESS_STATE_ACTIVE 0x01 +#define SCSI_ACCESS_STATE_STANDBY 0x02 +#define SCSI_ACCESS_STATE_UNAVAILABLE 0x03 +#define SCSI_ACCESS_STATE_LBA 0x04 +#define SCSI_ACCESS_STATE_OFFLINE 0x0e +#define SCSI_ACCESS_STATE_TRANSITIONING 0x0f + +/* Values for REPORT TARGET GROUP STATES */ +#define SCSI_ACCESS_STATE_MASK 0x0f +#define SCSI_ACCESS_STATE_PREFERRED 0x80 #endif /* _SCSI_PROTO_H_ */ |