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authorSwen Schillig <swen@vnet.ibm.com>2009-04-17 15:08:05 +0200
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2009-04-27 10:07:27 -0500
commit828bc1212a685918bbdb5866504b63eea2c241f5 (patch)
tree414f4e64ef934c37d873afb9711074011a6eb03c
parent92d5193b467c68e8432d6878980621c787e735af (diff)
[SCSI] zfcp: Set WKA-port to offline on adapter deactivation
The nameserver port might be in state online when the adapter is offlined. On adapter reactivation the nameserver port is not re-opened due to the PORT_ONLINE status. This results in an unsuccessful recovery. In forcing the nameserver port status to offline on all adapter offline events this issue is prevented. Waiting for the reference count to drop to zero in zfcp_wka_port_offline is not required, so remove it. Signed-off-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>
-rw-r--r--drivers/s390/scsi/zfcp_aux.c3
-rw-r--r--drivers/s390/scsi/zfcp_ccw.c1
-rw-r--r--drivers/s390/scsi/zfcp_erp.c1
-rw-r--r--drivers/s390/scsi/zfcp_ext.h1
-rw-r--r--drivers/s390/scsi/zfcp_fc.c15
5 files changed, 12 insertions, 9 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 5a01ef9aeb6..a00d2bb9559 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -524,6 +524,8 @@ int zfcp_adapter_enqueue(struct ccw_device *ccw_device)
atomic_clear_mask(ZFCP_STATUS_COMMON_REMOVE, &adapter->status);
+ zfcp_fc_nameserver_init(adapter);
+
if (!zfcp_adapter_scsi_register(adapter))
return 0;
@@ -552,7 +554,6 @@ void zfcp_adapter_dequeue(struct zfcp_adapter *adapter)
cancel_work_sync(&adapter->scan_work);
cancel_work_sync(&adapter->stat_work);
- cancel_delayed_work_sync(&adapter->nsp.work);
zfcp_adapter_scsi_unregister(adapter);
sysfs_remove_group(&adapter->ccw_device->dev.kobj,
&zfcp_sysfs_adapter_attrs);
diff --git a/drivers/s390/scsi/zfcp_ccw.c b/drivers/s390/scsi/zfcp_ccw.c
index cfb0dcb6e3f..733fe3bf628 100644
--- a/drivers/s390/scsi/zfcp_ccw.c
+++ b/drivers/s390/scsi/zfcp_ccw.c
@@ -108,7 +108,6 @@ static int zfcp_ccw_set_online(struct ccw_device *ccw_device)
/* initialize request counter */
BUG_ON(!zfcp_reqlist_isempty(adapter));
adapter->req_no = 0;
- zfcp_fc_nameserver_init(adapter);
zfcp_erp_modify_adapter_status(adapter, "ccsonl1", NULL,
ZFCP_STATUS_COMMON_RUNNING, ZFCP_SET);
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 4e160523c31..b73e37027eb 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -719,6 +719,7 @@ static void zfcp_erp_adapter_strategy_close(struct zfcp_erp_action *act)
zfcp_qdio_close(adapter);
zfcp_fsf_req_dismiss_all(adapter);
adapter->fsf_req_seq_no = 0;
+ zfcp_fc_wka_port_force_offline(&adapter->nsp);
/* all ports and units are closed */
zfcp_erp_modify_adapter_status(adapter, "erascl1", NULL,
ZFCP_STATUS_COMMON_OPEN, ZFCP_CLEAR);
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index df740f10d26..2e31b536548 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -106,6 +106,7 @@ extern void zfcp_fc_plogi_evaluate(struct zfcp_port *, struct fsf_plogi *);
extern void zfcp_test_link(struct zfcp_port *);
extern void zfcp_fc_link_test_work(struct work_struct *);
extern void zfcp_fc_nameserver_init(struct zfcp_adapter *);
+extern void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *);
/* zfcp_fsf.c */
extern int zfcp_fsf_open_port(struct zfcp_erp_action *);
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index e56141d1040..5d42929fe2f 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -98,13 +98,6 @@ static void zfcp_wka_port_offline(struct work_struct *work)
struct zfcp_wka_port *wka_port =
container_of(dw, struct zfcp_wka_port, work);
- /* Don't wait forvever. If the wka_port is too busy take it offline
- through a new call later */
- if (!wait_event_timeout(wka_port->completion_wq,
- atomic_read(&wka_port->refcount) == 0,
- HZ >> 1))
- return;
-
mutex_lock(&wka_port->mutex);
if ((atomic_read(&wka_port->refcount) != 0) ||
(wka_port->status != ZFCP_WKA_PORT_ONLINE))
@@ -142,6 +135,14 @@ void zfcp_fc_nameserver_init(struct zfcp_adapter *adapter)
INIT_DELAYED_WORK(&wka_port->work, zfcp_wka_port_offline);
}
+void zfcp_fc_wka_port_force_offline(struct zfcp_wka_port *wka)
+{
+ cancel_delayed_work_sync(&wka->work);
+ mutex_lock(&wka->mutex);
+ wka->status = ZFCP_WKA_PORT_OFFLINE;
+ mutex_unlock(&wka->mutex);
+}
+
static void _zfcp_fc_incoming_rscn(struct zfcp_fsf_req *fsf_req, u32 range,
struct fcp_rscn_element *elem)
{