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[SCSI] zfcp: Move ACL/CFDC code to zfcp_cfdc.c 

Move the code evaluating the ACL/CFDC specific errors to the file
zfcp_cfdc.c. With this change, all code related to the old access
control feature is kept in one file, not split across zfcp_erp.c and
zfcp_fsf.c.

Reviewed-by: Swen Schillig <swen@vnet.ibm.com>
Signed-off-by: Christof Schmitt <christof.schmitt@de.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
This commit is contained in:
Christof Schmitt 2010-09-08 14:39:59 +02:00 committed by James Bottomley
parent c61b536c97
commit a1ca48319a
4 changed files with 207 additions and 202 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

186
drivers/s390/scsi/zfcp_cfdc.c
View File

@ -2,9 +2,10 @@
* zfcp device driver
*
* Userspace interface for accessing the
* Access Control Lists / Control File Data Channel
* Access Control Lists / Control File Data Channel;
* handling of response code and states for ports and LUNs.
*
* Copyright IBM Corporation 2008, 2009
* Copyright IBM Corporation 2008, 2010
*/
#define KMSG_COMPONENT "zfcp"
@ -260,3 +261,184 @@ struct miscdevice zfcp_cfdc_misc = {
.name = "zfcp_cfdc",
.fops = &zfcp_cfdc_fops,
};
/**
* zfcp_cfdc_adapter_access_changed - Process change in adapter ACT
* @adapter: Adapter where the Access Control Table (ACT) changed
*
* After a change in the adapter ACT, check if access to any
* previously denied resources is now possible.
*/
void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *adapter)
{
unsigned long flags;
struct zfcp_port *port;
struct scsi_device *sdev;
struct zfcp_scsi_dev *zfcp_sdev;
int status;
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
return;
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list) {
status = atomic_read(&port->status);
if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
(status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
zfcp_erp_port_reopen(port,
ZFCP_STATUS_COMMON_ERP_FAILED,
"cfaac_1", NULL);
}
read_unlock_irqrestore(&adapter->port_list_lock, flags);
shost_for_each_device(sdev, port->adapter->scsi_host) {
zfcp_sdev = sdev_to_zfcp(sdev);
status = atomic_read(&zfcp_sdev->status);
if ((status & ZFCP_STATUS_COMMON_ACCESS_DENIED) ||
(status & ZFCP_STATUS_COMMON_ACCESS_BOXED))
zfcp_erp_lun_reopen(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED,
"cfaac_2", NULL);
}
}
static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{
u16 subtable = table >> 16;
u16 rule = table & 0xffff;
const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
if (subtable && subtable < ARRAY_SIZE(act_type))
dev_warn(&adapter->ccw_device->dev,
"Access denied according to ACT rule type %s, "
"rule %d\n", act_type[subtable], rule);
}
/**
* zfcp_cfdc_port_denied - Process "access denied" for port
* @port: The port where the acces has been denied
* @qual: The FSF status qualifier for the access denied FSF status
*/
void zfcp_cfdc_port_denied(struct zfcp_port *port,
union fsf_status_qual *qual)
{
dev_warn(&port->adapter->ccw_device->dev,
"Access denied to port 0x%016Lx\n",
(unsigned long long)port->wwpn);
zfcp_act_eval_err(port->adapter, qual->halfword[0]);
zfcp_act_eval_err(port->adapter, qual->halfword[1]);
zfcp_erp_modify_port_status(port, "cfadp_1", NULL,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
/**
* zfcp_cfdc_lun_denied - Process "access denied" for LUN
* @sdev: The SCSI device / LUN where the access has been denied
* @qual: The FSF status qualifier for the access denied FSF status
*/
void zfcp_cfdc_lun_denied(struct scsi_device *sdev,
union fsf_status_qual *qual)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
"Access denied to LUN 0x%016Lx on port 0x%016Lx\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[0]);
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->halfword[1]);
zfcp_erp_modify_lun_status(sdev, "cfadl_1", NULL,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
}
/**
* zfcp_cfdc_lun_shrng_vltn - Evaluate LUN sharing violation status
* @sdev: The LUN / SCSI device where sharing violation occurred
* @qual: The FSF status qualifier from the LUN sharing violation
*/
void zfcp_cfdc_lun_shrng_vltn(struct scsi_device *sdev,
union fsf_status_qual *qual)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (qual->word[0])
dev_warn(&zfcp_sdev->port->adapter->ccw_device->dev,
"LUN 0x%Lx on port 0x%Lx is already in "
"use by CSS%d, MIF Image ID %x\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn,
qual->fsf_queue_designator.cssid,
qual->fsf_queue_designator.hla);
else
zfcp_act_eval_err(zfcp_sdev->port->adapter, qual->word[2]);
zfcp_erp_modify_lun_status(sdev, "fsosh_3", NULL,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
}
/**
* zfcp_cfdc_open_lun_eval - Eval access ctrl. status for successful "open lun"
* @sdev: The SCSI device / LUN where to evaluate the status
* @bottom: The qtcb bottom with the status from the "open lun"
*
* Returns: 0 if LUN is usable, -EACCES if the access control table
* reports an unsupported configuration.
*/
int zfcp_cfdc_open_lun_eval(struct scsi_device *sdev,
struct fsf_qtcb_bottom_support *bottom)
{
int shared, rw;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
if ((adapter->connection_features & FSF_FEATURE_NPIV_MODE) ||
!(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) ||
zfcp_ccw_priv_sch(adapter))
return 0;
shared = !(bottom->lun_access_info & FSF_UNIT_ACCESS_EXCLUSIVE);
rw = (bottom->lun_access_info & FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
if (shared)
atomic_set_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
if (!rw) {
atomic_set_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
dev_info(&adapter->ccw_device->dev, "SCSI device at LUN "
"0x%016Lx on port 0x%016Lx opened read-only\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
}
if (!shared && !rw) {
dev_err(&adapter->ccw_device->dev, "Exclusive read-only access "
"not supported (LUN 0x%016Lx, port 0x%016Lx)\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsosh_5", NULL);
zfcp_erp_lun_shutdown(sdev, 0, "fsouh_6", NULL);
return -EACCES;
}
if (shared && rw) {
dev_err(&adapter->ccw_device->dev,
"Shared read-write access not supported "
"(LUN 0x%016Lx, port 0x%016Lx)\n",
zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsosh_7", NULL);
zfcp_erp_lun_shutdown(sdev, 0, "fsosh_8", NULL);
return -EACCES;
}
return 0;
}

82
drivers/s390/scsi/zfcp_erp.c
View File

@ -1593,85 +1593,3 @@ void zfcp_erp_lun_boxed(struct scsi_device *sdev, char *id, void *ref)
ZFCP_STATUS_COMMON_ACCESS_BOXED, ZFCP_SET);
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
/**
* zfcp_erp_port_access_denied - Adapter denied access to port.
* @port: port where access has been denied
* @id: id for debug trace
* @ref: reference for debug trace
*
* Since the adapter has denied access, stop using the port and the
* attached LUNs.
*/
void zfcp_erp_port_access_denied(struct zfcp_port *port, char *id, void *ref)
{
zfcp_erp_modify_port_status(port, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
/**
* zfcp_erp_lun_access_denied - Adapter denied access to LUN.
* @sdev: SCSI device / LUN where access has been denied
* @id: id for debug trace
* @ref: reference for debug trace
*
* Since the adapter has denied access, stop using the LUN.
*/
void zfcp_erp_lun_access_denied(struct scsi_device *sdev, char *id, void *ref)
{
zfcp_erp_modify_lun_status(sdev, id, ref,
ZFCP_STATUS_COMMON_ERP_FAILED |
ZFCP_STATUS_COMMON_ACCESS_DENIED, ZFCP_SET);
}
static void zfcp_erp_lun_access_changed(struct scsi_device *sdev, char *id,
void *ref)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
int status = atomic_read(&zfcp_sdev->status);
if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED)))
return;
zfcp_erp_lun_reopen(sdev, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
static void zfcp_erp_port_access_changed(struct zfcp_port *port, char *id,
void *ref)
{
struct scsi_device *sdev;
int status = atomic_read(&port->status);
if (!(status & (ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_COMMON_ACCESS_BOXED))) {
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
zfcp_erp_lun_access_changed(sdev, id, ref);
return;
}
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, id, ref);
}
/**
* zfcp_erp_adapter_access_changed - Process change in adapter ACT
* @adapter: Adapter where the Access Control Table (ACT) changed
* @id: Id for debug trace
* @ref: Reference for debug trace
*/
void zfcp_erp_adapter_access_changed(struct zfcp_adapter *adapter, char *id,
void *ref)
{
unsigned long flags;
struct zfcp_port *port;
if (adapter->connection_features & FSF_FEATURE_NPIV_MODE)
return;
read_lock_irqsave(&adapter->port_list_lock, flags);
list_for_each_entry(port, &adapter->port_list, list)
zfcp_erp_port_access_changed(port, id, ref);
read_unlock_irqrestore(&adapter->port_list_lock, flags);
}

12
drivers/s390/scsi/zfcp_ext.h
View File

@ -34,6 +34,14 @@ extern void zfcp_ccw_adapter_put(struct zfcp_adapter *);
/* zfcp_cfdc.c */
extern struct miscdevice zfcp_cfdc_misc;
extern void zfcp_cfdc_port_denied(struct zfcp_port *, union fsf_status_qual *);
extern void zfcp_cfdc_lun_denied(struct scsi_device *, union fsf_status_qual *);
extern void zfcp_cfdc_lun_shrng_vltn(struct scsi_device *,
union fsf_status_qual *);
extern int zfcp_cfdc_open_lun_eval(struct scsi_device *,
struct fsf_qtcb_bottom_support *);
extern void zfcp_cfdc_adapter_access_changed(struct zfcp_adapter *);
/* zfcp_dbf.c */
extern int zfcp_dbf_adapter_register(struct zfcp_adapter *);
@ -88,10 +96,6 @@ extern void zfcp_erp_wait(struct zfcp_adapter *);
extern void zfcp_erp_notify(struct zfcp_erp_action *, unsigned long);
extern void zfcp_erp_port_boxed(struct zfcp_port *, char *, void *);
extern void zfcp_erp_lun_boxed(struct scsi_device *, char *, void *);
extern void zfcp_erp_port_access_denied(struct zfcp_port *, char *, void *);
extern void zfcp_erp_lun_access_denied(struct scsi_device *, char *, void *);
extern void zfcp_erp_adapter_access_changed(struct zfcp_adapter *, char *,
void *);
extern void zfcp_erp_timeout_handler(unsigned long);
/* zfcp_fc.c */

129
drivers/s390/scsi/zfcp_fsf.c
View File

@ -61,47 +61,6 @@ static u32 fsf_qtcb_type[] = {
[FSF_QTCB_UPLOAD_CONTROL_FILE] = FSF_SUPPORT_COMMAND
};
static void zfcp_act_eval_err(struct zfcp_adapter *adapter, u32 table)
{
u16 subtable = table >> 16;
u16 rule = table & 0xffff;
const char *act_type[] = { "unknown", "OS", "WWPN", "DID", "LUN" };
if (subtable && subtable < ARRAY_SIZE(act_type))
dev_warn(&adapter->ccw_device->dev,
"Access denied according to ACT rule type %s, "
"rule %d\n", act_type[subtable], rule);
}
static void zfcp_fsf_access_denied_port(struct zfcp_fsf_req *req,
struct zfcp_port *port)
{
struct fsf_qtcb_header *header = &req->qtcb->header;
dev_warn(&req->adapter->ccw_device->dev,
"Access denied to port 0x%016Lx\n",
(unsigned long long)port->wwpn);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
zfcp_erp_port_access_denied(port, "fspad_1", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
static void zfcp_fsf_access_denied_lun(struct zfcp_fsf_req *req,
struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct fsf_qtcb_header *header = &req->qtcb->header;
dev_warn(&req->adapter->ccw_device->dev,
"Access denied to LUN 0x%016Lx on port 0x%016Lx\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[0]);
zfcp_act_eval_err(req->adapter, header->fsf_status_qual.halfword[1]);
zfcp_erp_lun_access_denied(sdev, "fsadl_1", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
static void zfcp_fsf_class_not_supp(struct zfcp_fsf_req *req)
{
dev_err(&req->adapter->ccw_device->dev, "FCP device not "
@ -295,13 +254,12 @@ static void zfcp_fsf_status_read_handler(struct zfcp_fsf_req *req)
break;
case FSF_STATUS_READ_NOTIFICATION_LOST:
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_ACT_UPDATED)
zfcp_erp_adapter_access_changed(adapter, "fssrh_3",
req);
zfcp_cfdc_adapter_access_changed(adapter);
if (sr_buf->status_subtype & FSF_STATUS_READ_SUB_INCOMING_ELS)
queue_work(adapter->work_queue, &adapter->scan_work);
break;
case FSF_STATUS_READ_CFDC_UPDATED:
zfcp_erp_adapter_access_changed(adapter, "fssrh_4", req);
zfcp_cfdc_adapter_access_changed(adapter);
break;
case FSF_STATUS_READ_FEATURE_UPDATE_ALERT:
adapter->adapter_features = sr_buf->payload.word[0];
@ -1116,8 +1074,10 @@ static void zfcp_fsf_send_els_handler(struct zfcp_fsf_req *req)
case FSF_RESPONSE_SIZE_TOO_LARGE:
break;
case FSF_ACCESS_DENIED:
if (port)
zfcp_fsf_access_denied_port(req, port);
if (port) {
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
}
break;
case FSF_SBAL_MISMATCH:
/* should never occure, avoided in zfcp_fsf_send_els */
@ -1375,7 +1335,8 @@ static void zfcp_fsf_open_port_handler(struct zfcp_fsf_req *req)
case FSF_PORT_ALREADY_OPEN:
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(req, port);
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_MAXIMUM_NUMBER_OF_PORTS_EXCEEDED:
dev_warn(&req->adapter->ccw_device->dev,
@ -1682,7 +1643,7 @@ static void zfcp_fsf_close_physical_port_handler(struct zfcp_fsf_req *req)
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_port(req, port);
zfcp_cfdc_port_denied(port, &header->fsf_status_qual);
break;
case FSF_PORT_BOXED:
/* can't use generic zfcp_erp_modify_port_status because
@ -1768,9 +1729,6 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct fsf_qtcb_header *header = &req->qtcb->header;
struct fsf_qtcb_bottom_support *bottom = &req->qtcb->bottom.support;
struct fsf_queue_designator *queue_designator =
&header->fsf_status_qual.fsf_queue_designator;
int exclusive, readwrite;
if (req->status & ZFCP_STATUS_FSFREQ_ERROR)
return;
@ -1789,29 +1747,15 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
case FSF_LUN_ALREADY_OPEN:
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_lun(req, sdev);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_PORT_BOXED:
zfcp_erp_port_boxed(zfcp_sdev->port, "fsouh_2", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_LUN_SHARING_VIOLATION:
if (header->fsf_status_qual.word[0])
dev_warn(&adapter->ccw_device->dev,
"LUN 0x%Lx on port 0x%Lx is already in "
"use by CSS%d, MIF Image ID %x\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn,
queue_designator->cssid,
queue_designator->hla);
else
zfcp_act_eval_err(adapter,
header->fsf_status_qual.word[2]);
zfcp_erp_lun_access_denied(sdev, "fsolh_3", req);
atomic_clear_mask(ZFCP_STATUS_LUN_SHARED, &zfcp_sdev->status);
atomic_clear_mask(ZFCP_STATUS_LUN_READONLY, &zfcp_sdev->status);
zfcp_cfdc_lun_shrng_vltn(sdev, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_MAXIMUM_NUMBER_OF_LUNS_EXCEEDED:
@ -1839,51 +1783,7 @@ static void zfcp_fsf_open_lun_handler(struct zfcp_fsf_req *req)
case FSF_GOOD:
zfcp_sdev->lun_handle = header->lun_handle;
atomic_set_mask(ZFCP_STATUS_COMMON_OPEN, &zfcp_sdev->status);
if (!(adapter->connection_features & FSF_FEATURE_NPIV_MODE) &&
(adapter->adapter_features & FSF_FEATURE_LUN_SHARING) &&
!zfcp_ccw_priv_sch(adapter)) {
exclusive = (bottom->lun_access_info &
FSF_UNIT_ACCESS_EXCLUSIVE);
readwrite = (bottom->lun_access_info &
FSF_UNIT_ACCESS_OUTBOUND_TRANSFER);
if (!exclusive)
atomic_set_mask(ZFCP_STATUS_LUN_SHARED,
&zfcp_sdev->status);
if (!readwrite) {
atomic_set_mask(ZFCP_STATUS_LUN_READONLY,
&zfcp_sdev->status);
dev_info(&adapter->ccw_device->dev,
"SCSI device at LUN 0x%016Lx on port "
"0x%016Lx opened read-only\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
}
if (exclusive && !readwrite) {
dev_err(&adapter->ccw_device->dev,
"Exclusive read-only access not "
"supported (LUN 0x%016Lx, "
"port 0x%016Lx)\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsolh_5", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_lun_shutdown(sdev, 0, "fsolh_6", req);
} else if (!exclusive && readwrite) {
dev_err(&adapter->ccw_device->dev,
"Shared read-write access not "
"supported (LUN 0x%016Lx, port "
"0x%016Lx)\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_lun_failed(sdev, "fsolh_7", req);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
zfcp_erp_lun_shutdown(sdev, 0, "fsolh_8", req);
}
}
zfcp_cfdc_open_lun_eval(sdev, bottom);
break;
}
}
@ -2106,7 +2006,8 @@ static void zfcp_fsf_fcp_handler_common(struct zfcp_fsf_req *req)
zfcp_fsf_class_not_supp(req);
break;
case FSF_ACCESS_DENIED:
zfcp_fsf_access_denied_lun(req, sdev);
zfcp_cfdc_lun_denied(sdev, &header->fsf_status_qual);
req->status |= ZFCP_STATUS_FSFREQ_ERROR;
break;
case FSF_DIRECTION_INDICATOR_NOT_VALID:
dev_err(&req->adapter->ccw_device->dev,