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authorHannes Reinecke <hare@suse.de>2016-03-03 07:54:08 +0100
committerMartin K. Petersen <martin.petersen@oracle.com>2016-03-05 17:16:48 -0500
commit5115fc7e2e6be8e082a9ff996cb9f343b0e850fe (patch)
tree69f3ce478a3386a476ffb77c682d7fba4157e65e /drivers
parent77c9df9644d7c35516770a21cb56b413e8547d8f (diff)
scsi_dh_alua: use common definitions for ALUA state
scsi_proto.h now contains definitions for the ALUA state, so we don't have to carry them in the device handler. Signed-off-by: Hannes Reinecke <hare@suse.de> Reviewed-by: Bart van Assche <bart.vanassche@sandisk.com> Reviewed-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/scsi/device_handler/scsi_dh_alua.c58
1 files changed, 25 insertions, 33 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c
index 9a7657efcf52..19f653930f7c 100644
--- a/drivers/scsi/device_handler/scsi_dh_alua.c
+++ b/drivers/scsi/device_handler/scsi_dh_alua.c
@@ -31,14 +31,6 @@
#define ALUA_DH_NAME "alua"
#define ALUA_DH_VER "2.0"
-#define TPGS_STATE_OPTIMIZED 0x0
-#define TPGS_STATE_NONOPTIMIZED 0x1
-#define TPGS_STATE_STANDBY 0x2
-#define TPGS_STATE_UNAVAILABLE 0x3
-#define TPGS_STATE_LBA_DEPENDENT 0x4
-#define TPGS_STATE_OFFLINE 0xe
-#define TPGS_STATE_TRANSITIONING 0xf
-
#define TPGS_SUPPORT_NONE 0x00
#define TPGS_SUPPORT_OPTIMIZED 0x01
#define TPGS_SUPPORT_NONOPTIMIZED 0x02
@@ -180,7 +172,7 @@ static int submit_stpg(struct scsi_device *sdev, int group_id,
/* Prepare the data buffer */
memset(stpg_data, 0, stpg_len);
- stpg_data[4] = TPGS_STATE_OPTIMIZED & 0x0f;
+ stpg_data[4] = SCSI_ACCESS_STATE_OPTIMAL;
put_unaligned_be16(group_id, &stpg_data[6]);
/* Prepare the command. */
@@ -248,7 +240,7 @@ struct alua_port_group *alua_alloc_pg(struct scsi_device *sdev,
}
pg->group_id = group_id;
pg->tpgs = tpgs;
- pg->state = TPGS_STATE_OPTIMIZED;
+ pg->state = SCSI_ACCESS_STATE_OPTIMAL;
if (optimize_stpg)
pg->flags |= ALUA_OPTIMIZE_STPG;
kref_init(&pg->kref);
@@ -378,22 +370,22 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h,
return SCSI_DH_OK;
}
-static char print_alua_state(int state)
+static char print_alua_state(unsigned char state)
{
switch (state) {
- case TPGS_STATE_OPTIMIZED:
+ case SCSI_ACCESS_STATE_OPTIMAL:
return 'A';
- case TPGS_STATE_NONOPTIMIZED:
+ case SCSI_ACCESS_STATE_ACTIVE:
return 'N';
- case TPGS_STATE_STANDBY:
+ case SCSI_ACCESS_STATE_STANDBY:
return 'S';
- case TPGS_STATE_UNAVAILABLE:
+ case SCSI_ACCESS_STATE_UNAVAILABLE:
return 'U';
- case TPGS_STATE_LBA_DEPENDENT:
+ case SCSI_ACCESS_STATE_LBA:
return 'L';
- case TPGS_STATE_OFFLINE:
+ case SCSI_ACCESS_STATE_OFFLINE:
return 'O';
- case TPGS_STATE_TRANSITIONING:
+ case SCSI_ACCESS_STATE_TRANSITIONING:
return 'T';
default:
return 'X';
@@ -647,7 +639,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
valid_states&TPGS_SUPPORT_OPTIMIZED?'A':'a');
switch (pg->state) {
- case TPGS_STATE_TRANSITIONING:
+ case SCSI_ACCESS_STATE_TRANSITIONING:
if (time_before(jiffies, pg->expiry)) {
/* State transition, retry */
pg->interval = 2;
@@ -655,11 +647,11 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_port_group *pg)
} else {
/* Transitioning time exceeded, set port to standby */
err = SCSI_DH_IO;
- pg->state = TPGS_STATE_STANDBY;
+ pg->state = SCSI_ACCESS_STATE_STANDBY;
pg->expiry = 0;
}
break;
- case TPGS_STATE_OFFLINE:
+ case SCSI_ACCESS_STATE_OFFLINE:
/* Path unusable */
err = SCSI_DH_DEV_OFFLINED;
pg->expiry = 0;
@@ -693,20 +685,20 @@ static unsigned alua_stpg(struct scsi_device *sdev, struct alua_port_group *pg)
return SCSI_DH_RETRY;
}
switch (pg->state) {
- case TPGS_STATE_OPTIMIZED:
+ case SCSI_ACCESS_STATE_OPTIMAL:
return SCSI_DH_OK;
- case TPGS_STATE_NONOPTIMIZED:
+ case SCSI_ACCESS_STATE_ACTIVE:
if ((pg->flags & ALUA_OPTIMIZE_STPG) &&
!pg->pref &&
(pg->tpgs & TPGS_MODE_IMPLICIT))
return SCSI_DH_OK;
break;
- case TPGS_STATE_STANDBY:
- case TPGS_STATE_UNAVAILABLE:
+ case SCSI_ACCESS_STATE_STANDBY:
+ case SCSI_ACCESS_STATE_UNAVAILABLE:
break;
- case TPGS_STATE_OFFLINE:
+ case SCSI_ACCESS_STATE_OFFLINE:
return SCSI_DH_IO;
- case TPGS_STATE_TRANSITIONING:
+ case SCSI_ACCESS_STATE_TRANSITIONING:
break;
default:
sdev_printk(KERN_INFO, sdev,
@@ -760,7 +752,7 @@ static void alua_rtpg_work(struct work_struct *work)
pg->flags &= ~ALUA_PG_RUN_RTPG;
spin_unlock_irqrestore(&pg->lock, flags);
- if (state == TPGS_STATE_TRANSITIONING) {
+ if (state == SCSI_ACCESS_STATE_TRANSITIONING) {
if (alua_tur(sdev) == SCSI_DH_RETRY) {
spin_lock_irqsave(&pg->lock, flags);
pg->flags &= ~ALUA_PG_RUNNING;
@@ -1006,7 +998,7 @@ static int alua_prep_fn(struct scsi_device *sdev, struct request *req)
{
struct alua_dh_data *h = sdev->handler_data;
struct alua_port_group __rcu *pg;
- int state = TPGS_STATE_OPTIMIZED;
+ unsigned char state = SCSI_ACCESS_STATE_OPTIMAL;
int ret = BLKPREP_OK;
rcu_read_lock();
@@ -1014,11 +1006,11 @@ static int alua_prep_fn(struct scsi_device *sdev, struct request *req)
if (pg)
state = pg->state;
rcu_read_unlock();
- if (state == TPGS_STATE_TRANSITIONING)
+ if (state == SCSI_ACCESS_STATE_TRANSITIONING)
ret = BLKPREP_DEFER;
- else if (state != TPGS_STATE_OPTIMIZED &&
- state != TPGS_STATE_NONOPTIMIZED &&
- state != TPGS_STATE_LBA_DEPENDENT) {
+ else if (state != SCSI_ACCESS_STATE_OPTIMAL &&
+ state != SCSI_ACCESS_STATE_ACTIVE &&
+ state != SCSI_ACCESS_STATE_LBA) {
ret = BLKPREP_KILL;
req->cmd_flags |= REQ_QUIET;
}