aboutsummaryrefslogtreecommitdiffstats
path: root/include/scsi/iscsi_if.h
diff options
context:
space:
mode:
authorMike Christie <michaelc@cs.wisc.edu>2006-04-06 21:13:39 -0500
committerJames Bottomley <jejb@mulgrave.il.steeleye.com>2006-04-14 14:05:09 -0500
commit30a6c65236f9d26e3325cae468f330b833a3878c (patch)
tree355519ccc74d4b3984c06d7dcb5852282e47c845 /include/scsi/iscsi_if.h
parentfd7255f51a13ea915099c7e488001dfbbeb05104 (diff)
[SCSI] iscsi: fix up iscsi eh
The current iscsi_tcp eh is not nicely setup for dm-multipath and performs some extra task management functions when they are not needed. The attached patch: - Fixes the TMF issues. If a session is rebuilt then we do not send aborts. - Fixes the problem where if the host reset fired, we would return SUCCESS even though we had not really done anything yet. This ends up causing problem with scsi_error.c's TUR. - If someone has turned on the userspace nop daemon code to try and detect network problems before the scsi command timeout we can now drop and clean up the session before the scsi command timesout and fires the eh speeding up the time it takes for a command to go from one patch to another. For network problems we fail the command with DID_BUS_BUSY so if failfast is set scsi_decide_disposition fails the command up to dm for it to try on another path. - And we had to add some basic iscsi session block code. Previously if we were trying to repair a session we would retrun a MLQUEUE code in the queuecommand. This worked but it was not the most efficient or pretty thing to do since it would take a while to relogin to the target. For iscsi_tcp/open-iscsi a lot of the iscsi error handler is in userspace the block code is pretty bare. We will be adding to that for qla4xxx. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
Diffstat (limited to 'include/scsi/iscsi_if.h')
-rw-r--r--include/scsi/iscsi_if.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/scsi/iscsi_if.h b/include/scsi/iscsi_if.h
index 2c3a89b64e7..eebe2b15161 100644
--- a/include/scsi/iscsi_if.h
+++ b/include/scsi/iscsi_if.h
@@ -174,6 +174,7 @@ enum iscsi_param {
ISCSI_PARAM_TPGT,
ISCSI_PARAM_PERSISTENT_ADDRESS,
ISCSI_PARAM_PERSISTENT_PORT,
+ ISCSI_PARAM_SESS_RECOVERY_TMO,
/* pased in through bind conn using transport_fd */
ISCSI_PARAM_CONN_PORT,
@@ -201,6 +202,7 @@ enum iscsi_param {
#define ISCSI_TPGT (1 << ISCSI_PARAM_TPGT)
#define ISCSI_PERSISTENT_ADDRESS (1 << ISCSI_PARAM_PERSISTENT_ADDRESS)
#define ISCSI_PERSISTENT_PORT (1 << ISCSI_PARAM_PERSISTENT_PORT)
+#define ISCSI_SESS_RECOVERY_TMO (1 << ISCSI_PARAM_SESS_RECOVERY_TMO)
#define ISCSI_CONN_PORT (1 << ISCSI_PARAM_CONN_PORT)
#define ISCSI_CONN_ADDRESS (1 << ISCSI_PARAM_CONN_ADDRESS)