summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
Diffstat
-rw-r--r--drivers/s390/scsi/zfcp_aux.c4
-rw-r--r--drivers/s390/scsi/zfcp_def.h4
-rw-r--r--drivers/s390/scsi/zfcp_erp.c56
-rw-r--r--drivers/s390/scsi/zfcp_ext.h6
-rw-r--r--drivers/s390/scsi/zfcp_fc.c21
-rw-r--r--drivers/s390/scsi/zfcp_fsf.c3
-rw-r--r--drivers/s390/scsi/zfcp_scsi.c119
7 files changed, 157 insertions, 56 deletions
diff --git a/drivers/s390/scsi/zfcp_aux.c b/drivers/s390/scsi/zfcp_aux.c
index 69a31187e54d..b2be6593b563 100644
--- a/drivers/s390/scsi/zfcp_aux.c
+++ b/drivers/s390/scsi/zfcp_aux.c
@@ -3,7 +3,7 @@
*
* Module interface and handling of zfcp data structures.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
/*
@@ -606,10 +606,12 @@ struct zfcp_port *zfcp_port_enqueue(struct zfcp_adapter *adapter, u64 wwpn,
INIT_LIST_HEAD(&port->unit_list_head);
INIT_WORK(&port->gid_pn_work, zfcp_erp_port_strategy_open_lookup);
INIT_WORK(&port->test_link_work, zfcp_fc_link_test_work);
+ INIT_WORK(&port->rport_work, zfcp_scsi_rport_work);
port->adapter = adapter;
port->d_id = d_id;
port->wwpn = wwpn;
+ port->rport_task = RPORT_NONE;
/* mark port unusable as long as sysfs registration is not complete */
atomic_set_mask(status | ZFCP_STATUS_COMMON_REMOVE, &port->status);
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 {
diff --git a/drivers/s390/scsi/zfcp_erp.c b/drivers/s390/scsi/zfcp_erp.c
index 65addf6a91ec..dee1cc3ce21b 100644
--- a/drivers/s390/scsi/zfcp_erp.c
+++ b/drivers/s390/scsi/zfcp_erp.c
@@ -3,7 +3,7 @@
*
* Error Recovery Procedures (ERP).
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#define KMSG_COMPONENT "zfcp"
@@ -240,6 +240,7 @@ static int _zfcp_erp_adapter_reopen(struct zfcp_adapter *adapter,
int clear_mask, char *id, void *ref)
{
zfcp_erp_adapter_block(adapter, clear_mask);
+ zfcp_scsi_schedule_rports_block(adapter);
/* ensure propagation of failed status to new devices */
if (atomic_read(&adapter->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
@@ -322,6 +323,7 @@ static void _zfcp_erp_port_forced_reopen(struct zfcp_port *port,
int clear, char *id, void *ref)
{
zfcp_erp_port_block(port, clear);
+ zfcp_scsi_schedule_rport_block(port);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
return;
@@ -353,6 +355,7 @@ static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id,
void *ref)
{
zfcp_erp_port_block(port, clear);
+ zfcp_scsi_schedule_rport_block(port);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
/* ensure propagation of failed status to new devices */
@@ -1211,37 +1214,6 @@ static void zfcp_erp_schedule_work(struct zfcp_unit *unit)
queue_work(zfcp_data.work_queue, &p->work);
}
-static void zfcp_erp_rport_register(struct zfcp_port *port)
-{
- struct fc_rport_identifiers ids;
- ids.node_name = port->wwnn;
- ids.port_name = port->wwpn;
- ids.port_id = port->d_id;
- ids.roles = FC_RPORT_ROLE_FCP_TARGET;
- port->rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
- if (!port->rport) {
- dev_err(&port->adapter->ccw_device->dev,
- "Registering port 0x%016Lx failed\n",
- (unsigned long long)port->wwpn);
- return;
- }
-
- scsi_target_unblock(&port->rport->dev);
- port->rport->maxframe_size = port->maxframe_size;
- port->rport->supported_classes = port->supported_classes;
-}
-
-static void zfcp_erp_rports_del(struct zfcp_adapter *adapter)
-{
- struct zfcp_port *port;
- list_for_each_entry(port, &adapter->port_list_head, list) {
- if (!port->rport)
- continue;
- fc_remote_port_delete(port->rport);
- port->rport = NULL;
- }
-}
-
static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
{
struct zfcp_adapter *adapter = act->adapter;
@@ -1250,8 +1222,8 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
switch (act->action) {
case ZFCP_ERP_ACTION_REOPEN_UNIT:
- if ((result == ZFCP_ERP_SUCCEEDED) &&
- !unit->device && port->rport) {
+ flush_work(&port->rport_work);
+ if ((result == ZFCP_ERP_SUCCEEDED) && !unit->device) {
if (!(atomic_read(&unit->status) &
ZFCP_STATUS_UNIT_SCSI_WORK_PENDING))
zfcp_erp_schedule_work(unit);
@@ -1261,23 +1233,17 @@ static void zfcp_erp_action_cleanup(struct zfcp_erp_action *act, int result)
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
- if ((result == ZFCP_ERP_SUCCEEDED) && !port->rport)
- zfcp_erp_rport_register(port);
- if ((result != ZFCP_ERP_SUCCEEDED) && port->rport) {
- fc_remote_port_delete(port->rport);
- port->rport = NULL;
- }
+ if (result == ZFCP_ERP_SUCCEEDED)
+ zfcp_scsi_schedule_rport_register(port);
zfcp_port_put(port);
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
- if (result != ZFCP_ERP_SUCCEEDED) {
- unregister_service_level(&adapter->service_level);
- zfcp_erp_rports_del(adapter);
- } else {
+ if (result == ZFCP_ERP_SUCCEEDED) {
register_service_level(&adapter->service_level);
schedule_work(&adapter->scan_work);
- }
+ } else
+ unregister_service_level(&adapter->service_level);
zfcp_adapter_put(adapter);
break;
}
diff --git a/drivers/s390/scsi/zfcp_ext.h b/drivers/s390/scsi/zfcp_ext.h
index 569d2437e99b..f6399ca97bcb 100644
--- a/drivers/s390/scsi/zfcp_ext.h
+++ b/drivers/s390/scsi/zfcp_ext.h
@@ -3,7 +3,7 @@
*
* External function declarations.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#ifndef ZFCP_EXT_H
@@ -154,6 +154,10 @@ extern int zfcp_adapter_scsi_register(struct zfcp_adapter *);
extern void zfcp_adapter_scsi_unregister(struct zfcp_adapter *);
extern char *zfcp_get_fcp_sns_info_ptr(struct fcp_rsp_iu *);
extern struct fc_function_template zfcp_transport_functions;
+extern void zfcp_scsi_rport_work(struct work_struct *);
+extern void zfcp_scsi_schedule_rport_register(struct zfcp_port *);
+extern void zfcp_scsi_schedule_rport_block(struct zfcp_port *);
+extern void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *);
/* zfcp_sysfs.c */
extern struct attribute_group zfcp_sysfs_unit_attrs;
diff --git a/drivers/s390/scsi/zfcp_fc.c b/drivers/s390/scsi/zfcp_fc.c
index 49a7a90501b6..c22c47868550 100644
--- a/drivers/s390/scsi/zfcp_fc.c
+++ b/drivers/s390/scsi/zfcp_fc.c
@@ -3,7 +3,7 @@
*
* Fibre Channel related functions for the zfcp device driver.
*
- * Copyright IBM Corporation 2008
+ * Copyright IBM Corporation 2008, 2009
*/
#define KMSG_COMPONENT "zfcp"
@@ -376,10 +376,14 @@ static void zfcp_fc_adisc_handler(unsigned long data)
port->wwnn = ls_adisc->wwnn;
if ((port->wwpn != ls_adisc->wwpn) ||
- !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN))
+ !(atomic_read(&port->status) & ZFCP_STATUS_COMMON_OPEN)) {
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED,
"fcadh_2", NULL);
+ goto out;
+ }
+ /* port is good, unblock rport without going through erp */
+ zfcp_scsi_schedule_rport_register(port);
out:
zfcp_port_put(port);
kfree(adisc);
@@ -423,14 +427,23 @@ void zfcp_fc_link_test_work(struct work_struct *work)
container_of(work, struct zfcp_port, test_link_work);
int retval;
+ if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_UNBLOCKED)) {
+ zfcp_port_put(port);
+ return; /* port erp is running and will update rport status */
+ }
+
+ zfcp_port_get(port);
+ port->rport_task = RPORT_DEL;
+ zfcp_scsi_rport_work(&port->rport_work);
+
retval = zfcp_fc_adisc(port);
if (retval == 0)
return;
/* send of ADISC was not possible */
+ zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
+
zfcp_port_put(port);
- if (retval != -EBUSY)
- zfcp_erp_port_forced_reopen(port, 0, "fcltwk1", NULL);
}
/**
diff --git a/drivers/s390/scsi/zfcp_fsf.c b/drivers/s390/scsi/zfcp_fsf.c
index 71c32f3ffcb7..9fa8c8990a11 100644
--- a/drivers/s390/scsi/zfcp_fsf.c
+++ b/drivers/s390/scsi/zfcp_fsf.c
@@ -3,7 +3,7 @@
*
* Implementation of FSF commands.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#define KMSG_COMPONENT "zfcp"
@@ -177,6 +177,7 @@ static void zfcp_fsf_link_down_info_eval(struct zfcp_fsf_req *req, char *id,
return;
atomic_set_mask(ZFCP_STATUS_ADAPTER_LINK_UNPLUGGED, &adapter->status);
+ zfcp_scsi_schedule_rports_block(adapter);
if (!link_down)
goto out;
diff --git a/drivers/s390/scsi/zfcp_scsi.c b/drivers/s390/scsi/zfcp_scsi.c
index 2af8cfbc3890..7141f9a675df 100644
--- a/drivers/s390/scsi/zfcp_scsi.c
+++ b/drivers/s390/scsi/zfcp_scsi.c
@@ -3,7 +3,7 @@
*
* Interface to Linux SCSI midlayer.
*
- * Copyright IBM Corporation 2002, 2008
+ * Copyright IBM Corporation 2002, 2009
*/
#define KMSG_COMPONENT "zfcp"
@@ -57,8 +57,8 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
{
struct zfcp_unit *unit;
struct zfcp_adapter *adapter;
- int status;
- int ret;
+ int status, scsi_result, ret;
+ struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
/* reset the status for this request */
scpnt->result = 0;
@@ -80,6 +80,14 @@ static int zfcp_scsi_queuecommand(struct scsi_cmnd *scpnt,
return 0;
}
+ scsi_result = fc_remote_port_chkready(rport);
+ if (unlikely(scsi_result)) {
+ scpnt->result = scsi_result;
+ zfcp_scsi_dbf_event_result("fail", 4, adapter, scpnt, NULL);
+ scpnt->scsi_done(scpnt);
+ return 0;
+ }
+
status = atomic_read(&unit->status);
if (unlikely((status & ZFCP_STATUS_COMMON_ERP_FAILED) ||
!(status & ZFCP_STATUS_COMMON_RUNNING))) {
@@ -473,6 +481,109 @@ static void zfcp_set_rport_dev_loss_tmo(struct fc_rport *rport, u32 timeout)
rport->dev_loss_tmo = timeout;
}
+/**
+ * zfcp_scsi_dev_loss_tmo_callbk - Free any reference to rport
+ * @rport: The rport that is about to be deleted.
+ */
+static void zfcp_scsi_dev_loss_tmo_callbk(struct fc_rport *rport)
+{
+ struct zfcp_port *port = rport->dd_data;
+
+ write_lock_irq(&zfcp_data.config_lock);
+ port->rport = NULL;
+ write_unlock_irq(&zfcp_data.config_lock);
+}
+
+/**
+ * zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
+ * @rport: The FC rport where to teminate I/O
+ *
+ * Abort all pending SCSI commands for a port by closing the
+ * port. Using a reopen for avoids a conflict with a shutdown
+ * overwriting a reopen.
+ */
+static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
+{
+ struct zfcp_port *port = rport->dd_data;
+
+ zfcp_erp_port_reopen(port, 0, "sctrpi1", NULL);
+}
+
+static void zfcp_scsi_rport_register(struct zfcp_port *port)
+{
+ struct fc_rport_identifiers ids;
+ struct fc_rport *rport;
+
+ ids.node_name = port->wwnn;
+ ids.port_name = port->wwpn;
+ ids.port_id = port->d_id;
+ ids.roles = FC_RPORT_ROLE_FCP_TARGET;
+
+ rport = fc_remote_port_add(port->adapter->scsi_host, 0, &ids);
+ if (!rport) {
+ dev_err(&port->adapter->ccw_device->dev,
+ "Registering port 0x%016Lx failed\n",
+ (unsigned long long)port->wwpn);
+ return;
+ }
+
+ rport->dd_data = port;
+ rport->maxframe_size = port->maxframe_size;
+ rport->supported_classes = port->supported_classes;
+ port->rport = rport;
+}
+
+static void zfcp_scsi_rport_block(struct zfcp_port *port)
+{
+ if (port->rport)
+ fc_remote_port_delete(port->rport);
+}
+
+void zfcp_scsi_schedule_rport_register(struct zfcp_port *port)
+{
+ zfcp_port_get(port);
+ port->rport_task = RPORT_ADD;
+
+ if (!queue_work(zfcp_data.work_queue, &port->rport_work))
+ zfcp_port_put(port);
+}
+
+void zfcp_scsi_schedule_rport_block(struct zfcp_port *port)
+{
+ zfcp_port_get(port);
+ port->rport_task = RPORT_DEL;
+
+ if (!queue_work(zfcp_data.work_queue, &port->rport_work))
+ zfcp_port_put(port);
+}
+
+void zfcp_scsi_schedule_rports_block(struct zfcp_adapter *adapter)
+{
+ struct zfcp_port *port;
+
+ list_for_each_entry(port, &adapter->port_list_head, list)
+ zfcp_scsi_schedule_rport_block(port);
+}
+
+void zfcp_scsi_rport_work(struct work_struct *work)
+{
+ struct zfcp_port *port = container_of(work, struct zfcp_port,
+ rport_work);
+
+ while (port->rport_task) {
+ if (port->rport_task == RPORT_ADD) {
+ port->rport_task = RPORT_NONE;
+ zfcp_scsi_rport_register(port);
+ } else {
+ port->rport_task = RPORT_NONE;
+ zfcp_scsi_rport_block(port);
+ }
+ }
+
+ zfcp_port_put(port);
+}
+
+
struct fc_function_template zfcp_transport_functions = {
.show_starget_port_id = 1,
.show_starget_port_name = 1,
@@ -491,6 +602,8 @@ struct fc_function_template zfcp_transport_functions = {
.reset_fc_host_stats = zfcp_reset_fc_host_stats,
.set_rport_dev_loss_tmo = zfcp_set_rport_dev_loss_tmo,
.get_host_port_state = zfcp_get_host_port_state,
+ .dev_loss_tmo_callbk = zfcp_scsi_dev_loss_tmo_callbk,
+ .terminate_rport_io = zfcp_scsi_terminate_rport_io,
.show_host_port_state = 1,
/* no functions registered for following dynamic attributes but
directly set by LLDD */
generated by cgit v1.2.3 (git 2.0.4) at 2024-11-05 13:27:49 +0000