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authorChristof Schmitt <christof.schmitt@de.ibm.com>2009-03-02 13:09:08 +0100
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-03-12 18:58:21 +0100
commita2fa0aede07c9488239dcac1eae58233181c355a (patch)
tree406836319208a5f8597010b0f25f599eae922e66 /drivers/s390/scsi/zfcp_def.h
parent[SCSI] zfcp: incorrect reaction on incoming RSCN (diff)
downloadlinux-a2fa0aede07c9488239dcac1eae58233181c355a.tar.xz
linux-a2fa0aede07c9488239dcac1eae58233181c355a.zip
[SCSI] zfcp: Block FC transport rports early on errors
Use the I/O blocking mechanism in the FC transport class to allow faster failovers for multipathing: - Call fc_remote_port_delete early to set the rport to BLOCKED. - Check the rport status in queuecommand with fc_remote_portchkready to no longer accept new I/O for this port and fail the I/O with the appropriate scsi_cmnd result. - Implement the terminate_rport_io handler to abort all pending I/O requests - Return SCSI commands with DID_TRANSPORT_DISRUPTED while erp is running. - When updating the remote port status, check for late changes and update the remote ports status accordingly. Acked-by: Swen Schillig <swen@vnet.ibm.com> Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'drivers/s390/scsi/zfcp_def.h')
-rw-r--r--drivers/s390/scsi/zfcp_def.h4
1 files changed, 3 insertions, 1 deletions
diff --git a/drivers/s390/scsi/zfcp_def.h b/drivers/s390/scsi/zfcp_def.h
index 22e418db4518..a0318630f047 100644
--- a/drivers/s390/scsi/zfcp_def.h
+++ b/drivers/s390/scsi/zfcp_def.h
@@ -3,7 +3,7 @@
*
* Global definitions for the zfcp device driver.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#ifndef ZFCP_DEF_H
@@ -512,6 +512,8 @@ struct zfcp_port {
u32 supported_classes;
struct work_struct gid_pn_work;
struct work_struct test_link_work;
+ struct work_struct rport_work;
+ enum { RPORT_NONE, RPORT_ADD, RPORT_DEL } rport_task;
};
struct zfcp_unit {