Douglas Gilbert wrote:
Brian King wrote:
Adds support for target reset to SG_SCSI_RESET.
Signed-off-by: Brian King <brking@xxxxxxxxxxxxxxxxxx>
---
drivers/scsi/sg.c | 3 +++
include/scsi/sg.h | 1 +
2 files changed, 4 insertions(+)
diff -puN drivers/scsi/sg.c~sg_target_reset drivers/scsi/sg.c
--- linux-2.6/drivers/scsi/sg.c~sg_target_reset 2008-06-16
15:34:16.000000000 -0500
+++ linux-2.6-bjking1/drivers/scsi/sg.c 2008-06-16
15:36:48.000000000 -0500
@@ -1026,6 +1026,9 @@ sg_ioctl(struct inode *inode, struct fil
case SG_SCSI_RESET_DEVICE:
val = SCSI_TRY_RESET_DEVICE;
break;
+ case SG_SCSI_RESET_TARGET:
+ val = SCSI_TRY_RESET_TARGET;
+ break;
case SG_SCSI_RESET_BUS:
val = SCSI_TRY_RESET_BUS;
break;
diff -puN include/scsi/sg.h~sg_target_reset include/scsi/sg.h
--- linux-2.6/include/scsi/sg.h~sg_target_reset 2008-06-16
15:36:05.000000000 -0500
+++ linux-2.6-bjking1/include/scsi/sg.h 2008-06-16
15:36:17.000000000 -0500
@@ -206,6 +206,7 @@ typedef struct sg_req_info { /* used by
#define SG_SCSI_RESET_DEVICE 1
#define SG_SCSI_RESET_BUS 2
#define SG_SCSI_RESET_HOST 3
+#define SG_SCSI_RESET_TARGET 4
/* synchronous SCSI command ioctl, (only in version 3 interface) */
#define SG_IO 0x2285 /* similar effect as write() followed by
read() */
_
Brian,
Is SG_SCSI_RESET_DEVICE actually a Logical Unit Reset
(as defined by SAM-4) on a modern LLD? If so perhaps a
I am working on it so all drivers follow that convention. I converted
most drivers so they sent a target reset in the target reset handler and
a lun reset in the device reset handler. Some of the patches for older
or rare drivers/hardware I could not test did not get merged yet so they
still do a target reset in the device reset handler. And for some
drivers like ipr, which would send a lun reset, but could escalate to a
target reset internally I was not sure what to do.
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