static void zfcp_erp_lun_unblock(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (status_change_set(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status))
zfcp_dbf_rec_run("erlubl1", &sdev_to_zfcp(sdev)->erp_action);
atomic_set_mask(ZFCP_STATUS_COMMON_UNBLOCKED, &zfcp_sdev->status);
}
static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
put_device(&zfcp_sdev->port->dev);
}
static void zfcp_erp_action_dequeue(struct zfcp_erp_action *erp_action)
{
struct zfcp_adapter *adapter = erp_action->adapter;
struct zfcp_scsi_dev *zfcp_sdev;
adapter->erp_total_count--;
if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
adapter->erp_low_mem_count--;
erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
}
list_del(&erp_action->list);
zfcp_dbf_rec_run("eractd1", erp_action);
switch (erp_action->action) {
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(erp_action->sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&zfcp_sdev->status);
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->port->status);
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
atomic_clear_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&erp_action->adapter->status);
break;
}
}
static int zfcp_erp_strategy_check_lun(struct scsi_device *sdev, int result)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&zfcp_sdev->erp_counter, 0);
zfcp_erp_lun_unblock(sdev);
break;
case ZFCP_ERP_FAILED :
atomic_inc(&zfcp_sdev->erp_counter);
if (atomic_read(&zfcp_sdev->erp_counter) > ZFCP_MAX_ERPS) {
dev_err(&zfcp_sdev->port->adapter->ccw_device->dev,
"ERP failed for LUN 0x%016Lx on "
"port 0x%016Lx\n",
(unsigned long long)zfcp_scsi_dev_lun(sdev),
(unsigned long long)zfcp_sdev->port->wwpn);
zfcp_erp_set_lun_status(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED);
}
break;
}
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
zfcp_erp_lun_block(sdev, 0);
result = ZFCP_ERP_EXIT;
}
return result;
}
static void zfcp_erp_lun_strategy_clearstati(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
atomic_andnot(ZFCP_STATUS_COMMON_ACCESS_DENIED,
&zfcp_sdev->status);
}
static void zfcp_erp_action_dismiss_lun(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
zfcp_erp_action_dismiss(&zfcp_sdev->erp_action);
}
/**
* zfcp_dbf_rec_run_lvl - trace event related to running recovery
* @level: trace level to be used for event
* @tag: identifier for event
* @erp: erp_action running
*/
void zfcp_dbf_rec_run_lvl(int level, char *tag, struct zfcp_erp_action *erp)
{
struct zfcp_dbf *dbf = erp->adapter->dbf;
struct zfcp_dbf_rec *rec = &dbf->rec_buf;
unsigned long flags;
if (!debug_level_enabled(dbf->rec, level))
return;
spin_lock_irqsave(&dbf->rec_lock, flags);
memset(rec, 0, sizeof(*rec));
rec->id = ZFCP_DBF_REC_RUN;
memcpy(rec->tag, tag, ZFCP_DBF_TAG_LEN);
zfcp_dbf_set_common(rec, erp->adapter, erp->port, erp->sdev);
rec->u.run.fsf_req_id = erp->fsf_req_id;
rec->u.run.rec_status = erp->status;
rec->u.run.rec_step = erp->step;
rec->u.run.rec_action = erp->action;
if (erp->sdev)
rec->u.run.rec_count =
atomic_read(&sdev_to_zfcp(erp->sdev)->erp_counter);
else if (erp->port)
rec->u.run.rec_count = atomic_read(&erp->port->erp_counter);
else
rec->u.run.rec_count = atomic_read(&erp->adapter->erp_counter);
debug_event(dbf->rec, level, rec, sizeof(*rec));
spin_unlock_irqrestore(&dbf->rec_lock, flags);
}
static struct zfcp_erp_action *zfcp_erp_setup_act(int need, u32 act_status,
struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct scsi_device *sdev)
{
struct zfcp_erp_action *erp_action;
struct zfcp_scsi_dev *zfcp_sdev;
switch (need) {
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
if (!(act_status & ZFCP_STATUS_ERP_NO_REF))
if (scsi_device_get(sdev))
return NULL;
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE,
&zfcp_sdev->status);
erp_action = &zfcp_sdev->erp_action;
memset(erp_action, 0, sizeof(struct zfcp_erp_action));
erp_action->port = port;
erp_action->sdev = sdev;
if (!(atomic_read(&zfcp_sdev->status) &
ZFCP_STATUS_COMMON_RUNNING))
act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
break;
case ZFCP_ERP_ACTION_REOPEN_PORT:
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
if (!get_device(&port->dev))
return NULL;
zfcp_erp_action_dismiss_port(port);
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &port->status);
erp_action = &port->erp_action;
memset(erp_action, 0, sizeof(struct zfcp_erp_action));
erp_action->port = port;
if (!(atomic_read(&port->status) & ZFCP_STATUS_COMMON_RUNNING))
act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
break;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
kref_get(&adapter->ref);
zfcp_erp_action_dismiss_adapter(adapter);
atomic_set_mask(ZFCP_STATUS_COMMON_ERP_INUSE, &adapter->status);
erp_action = &adapter->erp_action;
memset(erp_action, 0, sizeof(struct zfcp_erp_action));
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING))
act_status |= ZFCP_STATUS_ERP_CLOSE_ONLY;
break;
default:
return NULL;
}
erp_action->adapter = adapter;
erp_action->action = need;
erp_action->status = act_status;
return erp_action;
}
static void zfcp_erp_lun_strategy_clearstati(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
atomic_clear_mask(ZFCP_STATUS_COMMON_ACCESS_DENIED |
ZFCP_STATUS_LUN_SHARED | ZFCP_STATUS_LUN_READONLY,
&zfcp_sdev->status);
}
static void _zfcp_erp_lun_reopen_all(struct zfcp_port *port, int clear,
char *id)
{
struct scsi_device *sdev;
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
_zfcp_erp_lun_reopen(sdev, clear, id, 0);
}
static void zfcp_erp_action_dismiss_port(struct zfcp_port *port)
{
struct scsi_device *sdev;
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_INUSE)
zfcp_erp_action_dismiss(&port->erp_action);
else
shost_for_each_device(sdev, port->adapter->scsi_host)
if (sdev_to_zfcp(sdev)->port == port)
zfcp_erp_action_dismiss_lun(sdev);
}
void zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id)
{
unsigned long flags;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port = zfcp_sdev->port;
struct zfcp_adapter *adapter = port->adapter;
write_lock_irqsave(&adapter->erp_lock, flags);
_zfcp_erp_lun_reopen(sdev, clear, id, 0);
write_unlock_irqrestore(&adapter->erp_lock, flags);
}
static void zfcp_scsi_slave_destroy(struct scsi_device *sdev)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
/* if previous slave_alloc returned early, there is nothing to do */
if (!zfcp_sdev->port)
return;
zfcp_erp_lun_shutdown_wait(sdev, "scssd_1");
put_device(&zfcp_sdev->port->dev);
}
/**
* zfcp_erp_try_rport_unblock - unblock rport if no more/new recovery
* @port: zfcp_port whose fc_rport we should try to unblock
*/
static void zfcp_erp_try_rport_unblock(struct zfcp_port *port)
{
unsigned long flags;
struct zfcp_adapter *adapter = port->adapter;
int port_status;
struct Scsi_Host *shost = adapter->scsi_host;
struct scsi_device *sdev;
write_lock_irqsave(&adapter->erp_lock, flags);
port_status = atomic_read(&port->status);
if ((port_status & ZFCP_STATUS_COMMON_UNBLOCKED) == 0 ||
(port_status & (ZFCP_STATUS_COMMON_ERP_INUSE |
ZFCP_STATUS_COMMON_ERP_FAILED)) != 0) {
/* new ERP of severity >= port triggered elsewhere meanwhile or
* local link down (adapter erp_failed but not clear unblock)
*/
zfcp_dbf_rec_run_lvl(4, "ertru_p", &port->erp_action);
write_unlock_irqrestore(&adapter->erp_lock, flags);
return;
}
spin_lock(shost->host_lock);
__shost_for_each_device(sdev, shost) {
struct zfcp_scsi_dev *zsdev = sdev_to_zfcp(sdev);
int lun_status;
if (zsdev->port != port)
continue;
/* LUN under port of interest */
lun_status = atomic_read(&zsdev->status);
if ((lun_status & ZFCP_STATUS_COMMON_ERP_FAILED) != 0)
continue; /* unblock rport despite failed LUNs */
/* LUN recovery not given up yet [maybe follow-up pending] */
if ((lun_status & ZFCP_STATUS_COMMON_UNBLOCKED) == 0 ||
(lun_status & ZFCP_STATUS_COMMON_ERP_INUSE) != 0) {
/* LUN blocked:
* not yet unblocked [LUN recovery pending]
* or meanwhile blocked [new LUN recovery triggered]
*/
zfcp_dbf_rec_run_lvl(4, "ertru_l", &zsdev->erp_action);
spin_unlock(shost->host_lock);
write_unlock_irqrestore(&adapter->erp_lock, flags);
return;
}
}
/* now port has no child or all children have completed recovery,
* and no ERP of severity >= port was meanwhile triggered elsewhere
*/
zfcp_scsi_schedule_rport_register(port);
spin_unlock(shost->host_lock);
write_unlock_irqrestore(&adapter->erp_lock, flags);
}
void zfcp_erp_lun_shutdown_wait(struct scsi_device *sdev, char *id)
{
unsigned long flags;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port = zfcp_sdev->port;
struct zfcp_adapter *adapter = port->adapter;
int clear = ZFCP_STATUS_COMMON_RUNNING | ZFCP_STATUS_COMMON_ERP_FAILED;
write_lock_irqsave(&adapter->erp_lock, flags);
_zfcp_erp_lun_reopen(sdev, clear, id, ZFCP_STATUS_ERP_NO_REF);
write_unlock_irqrestore(&adapter->erp_lock, flags);
zfcp_erp_wait(adapter);
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
return SUCCESS;
}
static int zfcp_erp_required_act(int want, struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct scsi_device *sdev)
{
int need = want;
int l_status, p_status, a_status;
struct zfcp_scsi_dev *zfcp_sdev;
switch (want) {
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
l_status = atomic_read(&zfcp_sdev->status);
if (l_status & ZFCP_STATUS_COMMON_ERP_INUSE)
return 0;
p_status = atomic_read(&port->status);
if (!(p_status & ZFCP_STATUS_COMMON_RUNNING) ||
p_status & ZFCP_STATUS_COMMON_ERP_FAILED)
return 0;
if (!(p_status & ZFCP_STATUS_COMMON_UNBLOCKED))
need = ZFCP_ERP_ACTION_REOPEN_PORT;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
p_status = atomic_read(&port->status);
if (!(p_status & ZFCP_STATUS_COMMON_OPEN))
need = ZFCP_ERP_ACTION_REOPEN_PORT;
case ZFCP_ERP_ACTION_REOPEN_PORT:
p_status = atomic_read(&port->status);
if (p_status & ZFCP_STATUS_COMMON_ERP_INUSE)
return 0;
a_status = atomic_read(&adapter->status);
if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) ||
a_status & ZFCP_STATUS_COMMON_ERP_FAILED)
return 0;
if (p_status & ZFCP_STATUS_COMMON_NOESC)
return need;
if (!(a_status & ZFCP_STATUS_COMMON_UNBLOCKED))
need = ZFCP_ERP_ACTION_REOPEN_ADAPTER;
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
a_status = atomic_read(&adapter->status);
if (a_status & ZFCP_STATUS_COMMON_ERP_INUSE)
return 0;
if (!(a_status & ZFCP_STATUS_COMMON_RUNNING) &&
!(a_status & ZFCP_STATUS_COMMON_OPEN))
return 0;
}
return need;
}
static void _zfcp_erp_lun_reopen(struct scsi_device *sdev, int clear, char *id,
u32 act_status)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
zfcp_erp_lun_block(sdev, clear);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_ERP_FAILED)
return;
zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_LUN, adapter,
zfcp_sdev->port, sdev, id, act_status);
}
static
int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
int status, scsi_result, ret;
/* reset the status for this request */
scpnt->result = 0;
scpnt->host_scribble = NULL;
scsi_result = fc_remote_port_chkready(rport);
if (unlikely(scsi_result)) {
scpnt->result = scsi_result;
zfcp_dbf_scsi_fail_send(scpnt);
scpnt->scsi_done(scpnt);
return 0;
}
status = atomic_read(&zfcp_sdev->status);
if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
!(atomic_read(&zfcp_sdev->port->status) &
ZFCP_STATUS_COMMON_ERP_FAILED)) {
/* only LUN access denied, but port is good
* not covered by FC transport, have to fail here */
zfcp_scsi_command_fail(scpnt, DID_ERROR);
return 0;
}
if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
/* This could be either
* open LUN pending: this is temporary, will result in
* open LUN or ERP_FAILED, so retry command
* call to rport_delete pending: mimic retry from
* fc_remote_port_chkready until rport is BLOCKED
*/
zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
return 0;
}
ret = zfcp_fsf_fcp_cmnd(scpnt);
if (unlikely(ret == -EBUSY))
return SCSI_MLQUEUE_DEVICE_BUSY;
else if (unlikely(ret < 0))
return SCSI_MLQUEUE_HOST_BUSY;
return ret;
}
static void zfcp_dbf_set_common(struct zfcp_dbf_rec *rec,
struct zfcp_adapter *adapter,
struct zfcp_port *port,
struct scsi_device *sdev)
{
rec->adapter_status = atomic_read(&adapter->status);
if (port) {
rec->port_status = atomic_read(&port->status);
rec->wwpn = port->wwpn;
rec->d_id = port->d_id;
}
if (sdev) {
rec->lun_status = atomic_read(&sdev_to_zfcp(sdev)->status);
rec->lun = zfcp_scsi_dev_lun(sdev);
}
}
static ssize_t zfcp_sysfs_unit_failed_show(struct device *dev,
struct device_attribute *attr,
char *buf)
{
struct zfcp_unit *unit = container_of(dev, struct zfcp_unit, dev);
struct scsi_device *sdev;
unsigned int status, failed = 1;
sdev = zfcp_unit_sdev(unit);
if (sdev) {
status = atomic_read(&sdev_to_zfcp(sdev)->status);
failed = status & ZFCP_STATUS_COMMON_ERP_FAILED ? 1 : 0;
scsi_device_put(sdev);
}
return sprintf(buf, "%d\n", failed);
}
static int zfcp_scsi_slave_alloc(struct scsi_device *sdev)
{
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct zfcp_adapter *adapter =
(struct zfcp_adapter *) sdev->host->hostdata[0];
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_port *port;
struct zfcp_unit *unit;
int npiv = adapter->connection_features & FSF_FEATURE_NPIV_MODE;
zfcp_sdev->erp_action.adapter = adapter;
zfcp_sdev->erp_action.sdev = sdev;
port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
if (!port)
return -ENXIO;
zfcp_sdev->erp_action.port = port;
unit = zfcp_unit_find(port, zfcp_scsi_dev_lun(sdev));
if (unit)
put_device(&unit->dev);
if (!unit && !(allow_lun_scan && npiv)) {
put_device(&port->dev);
return -ENXIO;
}
zfcp_sdev->port = port;
zfcp_sdev->latencies.write.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.write.fabric.min = 0xFFFFFFFF;
zfcp_sdev->latencies.read.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.read.fabric.min = 0xFFFFFFFF;
zfcp_sdev->latencies.cmd.channel.min = 0xFFFFFFFF;
zfcp_sdev->latencies.cmd.fabric.min = 0xFFFFFFFF;
spin_lock_init(&zfcp_sdev->latencies.lock);
zfcp_erp_set_lun_status(sdev, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_lun_reopen(sdev, 0, "scsla_1");
zfcp_erp_wait(port->adapter);
return 0;
}
static int zfcp_erp_strategy_statechange(struct zfcp_erp_action *act, int ret)
{
int action = act->action;
struct zfcp_adapter *adapter = act->adapter;
struct zfcp_port *port = act->port;
struct scsi_device *sdev = act->sdev;
struct zfcp_scsi_dev *zfcp_sdev;
u32 erp_status = act->status;
switch (action) {
case ZFCP_ERP_ACTION_REOPEN_ADAPTER:
if (zfcp_erp_strat_change_det(&adapter->status, erp_status)) {
_zfcp_erp_adapter_reopen(adapter,
ZFCP_STATUS_COMMON_ERP_FAILED,
"ersscg1");
return ZFCP_ERP_EXIT;
}
break;
case ZFCP_ERP_ACTION_REOPEN_PORT_FORCED:
case ZFCP_ERP_ACTION_REOPEN_PORT:
if (zfcp_erp_strat_change_det(&port->status, erp_status)) {
_zfcp_erp_port_reopen(port,
ZFCP_STATUS_COMMON_ERP_FAILED,
"ersscg2");
return ZFCP_ERP_EXIT;
}
break;
case ZFCP_ERP_ACTION_REOPEN_LUN:
zfcp_sdev = sdev_to_zfcp(sdev);
if (zfcp_erp_strat_change_det(&zfcp_sdev->status, erp_status)) {
_zfcp_erp_lun_reopen(sdev,
ZFCP_STATUS_COMMON_ERP_FAILED,
"ersscg3", 0);
return ZFCP_ERP_EXIT;
}
break;
}
return ret;
}
static
int zfcp_scsi_queuecommand(struct Scsi_Host *shost, struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct fc_rport *rport = starget_to_rport(scsi_target(scpnt->device));
int status, scsi_result, ret;
scpnt->result = 0;
scpnt->host_scribble = NULL;
scsi_result = fc_remote_port_chkready(rport);
if (unlikely(scsi_result)) {
scpnt->result = scsi_result;
zfcp_dbf_scsi_fail_send(scpnt);
scpnt->scsi_done(scpnt);
return 0;
}
status = atomic_read(&zfcp_sdev->status);
if (unlikely(status & ZFCP_STATUS_COMMON_ERP_FAILED) &&
!(atomic_read(&zfcp_sdev->port->status) &
ZFCP_STATUS_COMMON_ERP_FAILED)) {
zfcp_scsi_command_fail(scpnt, DID_ERROR);
return 0;
}
if (unlikely(!(status & ZFCP_STATUS_COMMON_UNBLOCKED))) {
zfcp_scsi_command_fail(scpnt, DID_IMM_RETRY);
return 0;
}
ret = zfcp_fsf_fcp_cmnd(scpnt);
if (unlikely(ret == -EBUSY))
return SCSI_MLQUEUE_DEVICE_BUSY;
else if (unlikely(ret < 0))
return SCSI_MLQUEUE_HOST_BUSY;
return ret;
}
static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
if (fsf_req)
break;
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
return SUCCESS;
}
}
if (!fsf_req)
return FAILED;
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
retval = FAILED;
} else
zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
zfcp_fsf_req_free(fsf_req);
return retval;
}
static int zfcp_erp_lun_strategy(struct zfcp_erp_action *erp_action)
{
struct scsi_device *sdev = erp_action->sdev;
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
switch (erp_action->step) {
case ZFCP_ERP_STEP_UNINITIALIZED:
zfcp_erp_lun_strategy_clearstati(sdev);
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return zfcp_erp_lun_strategy_close(erp_action);
case ZFCP_ERP_STEP_LUN_CLOSING:
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return ZFCP_ERP_FAILED;
if (erp_action->status & ZFCP_STATUS_ERP_CLOSE_ONLY)
return ZFCP_ERP_EXIT;
return zfcp_erp_lun_strategy_open(erp_action);
case ZFCP_ERP_STEP_LUN_OPENING:
if (atomic_read(&zfcp_sdev->status) & ZFCP_STATUS_COMMON_OPEN)
return ZFCP_ERP_SUCCEEDED;
}
return ZFCP_ERP_FAILED;
}
static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
{
struct zfcp_adapter *adapter = zsdev->port->adapter;
struct zfcp_scsi_req_filter filter = {
.tmf_scope = FCP_TMF_TGT_RESET,
.port_handle = zsdev->port->handle,
};
unsigned long flags;
if (tm_flags == FCP_TMF_LUN_RESET) {
filter.tmf_scope = FCP_TMF_LUN_RESET;
filter.lun_handle = zsdev->lun_handle;
}
/*
* abort_lock secures against other processings - in the abort-function
* and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
*/
write_lock_irqsave(&adapter->abort_lock, flags);
zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
&filter);
write_unlock_irqrestore(&adapter->abort_lock, flags);
}
/**
* zfcp_scsi_task_mgmt_function() - Send a task management function (sync).
* @sdev: Pointer to SCSI device to send the task management command to.
* @tm_flags: Task management flags,
* here we only handle %FCP_TMF_TGT_RESET or %FCP_TMF_LUN_RESET.
*/
static int zfcp_scsi_task_mgmt_function(struct scsi_device *sdev, u8 tm_flags)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(sdev);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct fc_rport *rport = starget_to_rport(scsi_target(sdev));
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_fcp_task_mgmt(sdev, tm_flags);
if (fsf_req)
break;
zfcp_dbf_scsi_devreset("wait", sdev, tm_flags, NULL);
zfcp_erp_wait(adapter);
ret = fc_block_rport(rport);
if (ret) {
zfcp_dbf_scsi_devreset("fiof", sdev, tm_flags, NULL);
return ret;
}
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", sdev, tm_flags, NULL);
return SUCCESS;
}
}
if (!fsf_req) {
zfcp_dbf_scsi_devreset("reqf", sdev, tm_flags, NULL);
return FAILED;
}
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", sdev, tm_flags, fsf_req);
retval = FAILED;
} else {
zfcp_dbf_scsi_devreset("okay", sdev, tm_flags, fsf_req);
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
}
zfcp_fsf_req_free(fsf_req);
return retval;
}
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
struct scsi_device *sdev = scpnt->device;
return zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
struct scsi_target *starget = scsi_target(scpnt->device);
struct fc_rport *rport = starget_to_rport(starget);
struct Scsi_Host *shost = rport_to_shost(rport);
struct scsi_device *sdev = NULL, *tmp_sdev;
struct zfcp_adapter *adapter =
(struct zfcp_adapter *)shost->hostdata[0];
int ret;
shost_for_each_device(tmp_sdev, shost) {
if (tmp_sdev->id == starget->id) {
sdev = tmp_sdev;
break;
}
}
if (!sdev) {
ret = FAILED;
zfcp_dbf_scsi_eh("tr_nosd", adapter, starget->id, ret);
return ret;
}
ret = zfcp_scsi_task_mgmt_function(sdev, FCP_TMF_TGT_RESET);
/* release reference from above shost_for_each_device */
if (sdev)
scsi_device_put(tmp_sdev);
return ret;
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret = SUCCESS, fc_ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
fc_ret = fc_block_scsi_eh(scpnt);
if (fc_ret)
ret = fc_ret;
zfcp_dbf_scsi_eh("schrh_r", adapter, ~0, ret);
return ret;
}
/**
* zfcp_scsi_sysfs_host_reset() - Support scsi_host sysfs attribute host_reset.
* @shost: Pointer to Scsi_Host to perform action on.
* @reset_type: We support %SCSI_ADAPTER_RESET but not %SCSI_FIRMWARE_RESET.
*
* Return: 0 on %SCSI_ADAPTER_RESET, -%EOPNOTSUPP otherwise.
*
* This is similar to zfcp_sysfs_adapter_failed_store().
*/
static int zfcp_scsi_sysfs_host_reset(struct Scsi_Host *shost, int reset_type)
{
struct zfcp_adapter *adapter =
(struct zfcp_adapter *)shost->hostdata[0];
int ret = 0;
if (reset_type != SCSI_ADAPTER_RESET) {
ret = -EOPNOTSUPP;
zfcp_dbf_scsi_eh("scshr_n", adapter, ~0, ret);
return ret;
}
zfcp_erp_adapter_reset_sync(adapter, "scshr_y");
return ret;
}
struct scsi_transport_template *zfcp_scsi_transport_template;
static struct scsi_host_template zfcp_scsi_host_template = {
.module = THIS_MODULE,
.name = "zfcp",
.queuecommand = zfcp_scsi_queuecommand,
.eh_timed_out = fc_eh_timed_out,
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.change_queue_depth = scsi_change_queue_depth,
.host_reset = zfcp_scsi_sysfs_host_reset,
.proc_name = "zfcp",
.can_queue = 4096,
.this_id = -1,
.sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
/* GCD, adjusted later */
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
/* GCD, adjusted later */
/* report size limit per scatter-gather segment */
.max_segment_size = ZFCP_QDIO_SBALE_LEN,
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
.supported_mode = MODE_INITIATOR,
};
/**
* zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer
* @adapter: The zfcp adapter to register with the SCSI midlayer
*/
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
{
struct ccw_dev_id dev_id;
if (adapter->scsi_host)
return 0;
ccw_device_get_id(adapter->ccw_device, &dev_id);
/* register adapter as SCSI host with mid layer of SCSI stack */
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
sizeof (struct zfcp_adapter *));
if (!adapter->scsi_host) {
dev_err(&adapter->ccw_device->dev,
"Registering the FCP device with the "
"SCSI stack failed\n");
return -EIO;
}
/* tell the SCSI stack some characteristics of this adapter */
adapter->scsi_host->max_id = 511;
adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
scsi_host_put(adapter->scsi_host);
return -EIO;
}
return 0;
}
/**
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
* @adapter: The zfcp adapter to unregister.
*/
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
read_lock_irq(&adapter->port_list_lock);
list_for_each_entry(port, &adapter->port_list, list)
port->rport = NULL;
read_unlock_irq(&adapter->port_list_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
adapter->scsi_host = NULL;
}
static struct fc_host_statistics*
zfcp_scsi_init_fc_host_stats(struct zfcp_adapter *adapter)
{
struct fc_host_statistics *fc_stats;
if (!adapter->fc_stats) {
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
if (!fc_stats)
return NULL;
adapter->fc_stats = fc_stats; /* freed in adapter_release */
}
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
return adapter->fc_stats;
}
static void zfcp_scsi_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data,
struct fsf_qtcb_bottom_port *old)
{
fc_stats->seconds_since_last_reset =
data->seconds_since_last_reset - old->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
fc_stats->tx_words = data->tx_words - old->tx_words;
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
fc_stats->rx_words = data->rx_words - old->rx_words;
fc_stats->lip_count = data->lip - old->lip;
fc_stats->nos_count = data->nos - old->nos;
fc_stats->error_frames = data->error_frames - old->error_frames;
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
fc_stats->link_failure_count = data->link_failure - old->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
fc_stats->loss_of_signal_count =
data->loss_of_signal - old->loss_of_signal;
fc_stats->prim_seq_protocol_err_count =
data->psp_error_counts - old->psp_error_counts;
fc_stats->invalid_tx_word_count =
data->invalid_tx_words - old->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
fc_stats->fcp_input_requests =
data->input_requests - old->input_requests;
fc_stats->fcp_output_requests =
data->output_requests - old->output_requests;
fc_stats->fcp_control_requests =
data->control_requests - old->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
static void zfcp_scsi_set_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data)
{
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames;
fc_stats->tx_words = data->tx_words;
fc_stats->rx_frames = data->rx_frames;
fc_stats->rx_words = data->rx_words;
fc_stats->lip_count = data->lip;
fc_stats->nos_count = data->nos;
fc_stats->error_frames = data->error_frames;
fc_stats->dumped_frames = data->dumped_frames;
fc_stats->link_failure_count = data->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync;
fc_stats->loss_of_signal_count = data->loss_of_signal;
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs;
fc_stats->fcp_input_requests = data->input_requests;
fc_stats->fcp_output_requests = data->output_requests;
fc_stats->fcp_control_requests = data->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb;
}
static void zfcp_scsi_forget_cmnds(struct zfcp_scsi_dev *zsdev, u8 tm_flags)
{
struct zfcp_adapter *adapter = zsdev->port->adapter;
struct zfcp_scsi_req_filter filter = {
.tmf_scope = FCP_TMF_TGT_RESET,
.port_handle = zsdev->port->handle,
};
unsigned long flags;
if (tm_flags == FCP_TMF_LUN_RESET) {
filter.tmf_scope = FCP_TMF_LUN_RESET;
filter.lun_handle = zsdev->lun_handle;
}
/*
* abort_lock secures against other processings - in the abort-function
* and normal cmnd-handler - of (struct zfcp_fsf_req *)->data
*/
write_lock_irqsave(&adapter->abort_lock, flags);
zfcp_reqlist_apply_for_all(adapter->req_list, zfcp_scsi_forget_cmnd,
&filter);
write_unlock_irqrestore(&adapter->abort_lock, flags);
}
static int zfcp_task_mgmt_function(struct scsi_cmnd *scpnt, u8 tm_flags)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
struct zfcp_fsf_req *fsf_req = NULL;
int retval = SUCCESS, ret;
int retry = 3;
while (retry--) {
fsf_req = zfcp_fsf_fcp_task_mgmt(scpnt, tm_flags);
if (fsf_req)
break;
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_COMMON_RUNNING)) {
zfcp_dbf_scsi_devreset("nres", scpnt, tm_flags);
return SUCCESS;
}
}
if (!fsf_req)
return FAILED;
wait_for_completion(&fsf_req->completion);
if (fsf_req->status & ZFCP_STATUS_FSFREQ_TMFUNCFAILED) {
zfcp_dbf_scsi_devreset("fail", scpnt, tm_flags);
retval = FAILED;
} else {
zfcp_dbf_scsi_devreset("okay", scpnt, tm_flags);
zfcp_scsi_forget_cmnds(zfcp_sdev, tm_flags);
}
zfcp_fsf_req_free(fsf_req);
return retval;
}
static int zfcp_scsi_eh_device_reset_handler(struct scsi_cmnd *scpnt)
{
return zfcp_task_mgmt_function(scpnt, FCP_TMF_LUN_RESET);
}
static int zfcp_scsi_eh_target_reset_handler(struct scsi_cmnd *scpnt)
{
return zfcp_task_mgmt_function(scpnt, FCP_TMF_TGT_RESET);
}
static int zfcp_scsi_eh_host_reset_handler(struct scsi_cmnd *scpnt)
{
struct zfcp_scsi_dev *zfcp_sdev = sdev_to_zfcp(scpnt->device);
struct zfcp_adapter *adapter = zfcp_sdev->port->adapter;
int ret;
zfcp_erp_adapter_reopen(adapter, 0, "schrh_1");
zfcp_erp_wait(adapter);
ret = fc_block_scsi_eh(scpnt);
if (ret)
return ret;
return SUCCESS;
}
struct scsi_transport_template *zfcp_scsi_transport_template;
static struct scsi_host_template zfcp_scsi_host_template = {
.module = THIS_MODULE,
.name = "zfcp",
.queuecommand = zfcp_scsi_queuecommand,
.eh_abort_handler = zfcp_scsi_eh_abort_handler,
.eh_device_reset_handler = zfcp_scsi_eh_device_reset_handler,
.eh_target_reset_handler = zfcp_scsi_eh_target_reset_handler,
.eh_host_reset_handler = zfcp_scsi_eh_host_reset_handler,
.slave_alloc = zfcp_scsi_slave_alloc,
.slave_configure = zfcp_scsi_slave_configure,
.slave_destroy = zfcp_scsi_slave_destroy,
.change_queue_depth = scsi_change_queue_depth,
.proc_name = "zfcp",
.can_queue = 4096,
.this_id = -1,
.sg_tablesize = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2),
/* GCD, adjusted later */
.max_sectors = (((QDIO_MAX_ELEMENTS_PER_BUFFER - 1)
* ZFCP_QDIO_MAX_SBALS_PER_REQ) - 2) * 8,
/* GCD, adjusted later */
.dma_boundary = ZFCP_QDIO_SBALE_LEN - 1,
.use_clustering = 1,
.shost_attrs = zfcp_sysfs_shost_attrs,
.sdev_attrs = zfcp_sysfs_sdev_attrs,
.track_queue_depth = 1,
};
/**
* zfcp_scsi_adapter_register - Register SCSI and FC host with SCSI midlayer
* @adapter: The zfcp adapter to register with the SCSI midlayer
*/
int zfcp_scsi_adapter_register(struct zfcp_adapter *adapter)
{
struct ccw_dev_id dev_id;
if (adapter->scsi_host)
return 0;
ccw_device_get_id(adapter->ccw_device, &dev_id);
/* register adapter as SCSI host with mid layer of SCSI stack */
adapter->scsi_host = scsi_host_alloc(&zfcp_scsi_host_template,
sizeof (struct zfcp_adapter *));
if (!adapter->scsi_host) {
dev_err(&adapter->ccw_device->dev,
"Registering the FCP device with the "
"SCSI stack failed\n");
return -EIO;
}
/* tell the SCSI stack some characteristics of this adapter */
adapter->scsi_host->max_id = 511;
adapter->scsi_host->max_lun = 0xFFFFFFFF;
adapter->scsi_host->max_channel = 0;
adapter->scsi_host->unique_id = dev_id.devno;
adapter->scsi_host->max_cmd_len = 16; /* in struct fcp_cmnd */
adapter->scsi_host->transportt = zfcp_scsi_transport_template;
adapter->scsi_host->hostdata[0] = (unsigned long) adapter;
if (scsi_add_host(adapter->scsi_host, &adapter->ccw_device->dev)) {
scsi_host_put(adapter->scsi_host);
return -EIO;
}
return 0;
}
/**
* zfcp_scsi_adapter_unregister - Unregister SCSI and FC host from SCSI midlayer
* @adapter: The zfcp adapter to unregister.
*/
void zfcp_scsi_adapter_unregister(struct zfcp_adapter *adapter)
{
struct Scsi_Host *shost;
struct zfcp_port *port;
shost = adapter->scsi_host;
if (!shost)
return;
read_lock_irq(&adapter->port_list_lock);
list_for_each_entry(port, &adapter->port_list, list)
port->rport = NULL;
read_unlock_irq(&adapter->port_list_lock);
fc_remove_host(shost);
scsi_remove_host(shost);
scsi_host_put(shost);
adapter->scsi_host = NULL;
}
static struct fc_host_statistics*
zfcp_init_fc_host_stats(struct zfcp_adapter *adapter)
{
struct fc_host_statistics *fc_stats;
if (!adapter->fc_stats) {
fc_stats = kmalloc(sizeof(*fc_stats), GFP_KERNEL);
if (!fc_stats)
return NULL;
adapter->fc_stats = fc_stats; /* freed in adapter_release */
}
memset(adapter->fc_stats, 0, sizeof(*adapter->fc_stats));
return adapter->fc_stats;
}
static void zfcp_adjust_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data,
struct fsf_qtcb_bottom_port *old)
{
fc_stats->seconds_since_last_reset =
data->seconds_since_last_reset - old->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames - old->tx_frames;
fc_stats->tx_words = data->tx_words - old->tx_words;
fc_stats->rx_frames = data->rx_frames - old->rx_frames;
fc_stats->rx_words = data->rx_words - old->rx_words;
fc_stats->lip_count = data->lip - old->lip;
fc_stats->nos_count = data->nos - old->nos;
fc_stats->error_frames = data->error_frames - old->error_frames;
fc_stats->dumped_frames = data->dumped_frames - old->dumped_frames;
fc_stats->link_failure_count = data->link_failure - old->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync - old->loss_of_sync;
fc_stats->loss_of_signal_count =
data->loss_of_signal - old->loss_of_signal;
fc_stats->prim_seq_protocol_err_count =
data->psp_error_counts - old->psp_error_counts;
fc_stats->invalid_tx_word_count =
data->invalid_tx_words - old->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs - old->invalid_crcs;
fc_stats->fcp_input_requests =
data->input_requests - old->input_requests;
fc_stats->fcp_output_requests =
data->output_requests - old->output_requests;
fc_stats->fcp_control_requests =
data->control_requests - old->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb - old->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb - old->output_mb;
}
static void zfcp_set_fc_host_stats(struct fc_host_statistics *fc_stats,
struct fsf_qtcb_bottom_port *data)
{
fc_stats->seconds_since_last_reset = data->seconds_since_last_reset;
fc_stats->tx_frames = data->tx_frames;
fc_stats->tx_words = data->tx_words;
fc_stats->rx_frames = data->rx_frames;
fc_stats->rx_words = data->rx_words;
fc_stats->lip_count = data->lip;
fc_stats->nos_count = data->nos;
fc_stats->error_frames = data->error_frames;
fc_stats->dumped_frames = data->dumped_frames;
fc_stats->link_failure_count = data->link_failure;
fc_stats->loss_of_sync_count = data->loss_of_sync;
fc_stats->loss_of_signal_count = data->loss_of_signal;
fc_stats->prim_seq_protocol_err_count = data->psp_error_counts;
fc_stats->invalid_tx_word_count = data->invalid_tx_words;
fc_stats->invalid_crc_count = data->invalid_crcs;
fc_stats->fcp_input_requests = data->input_requests;
fc_stats->fcp_output_requests = data->output_requests;
fc_stats->fcp_control_requests = data->control_requests;
fc_stats->fcp_input_megabytes = data->input_mb;
fc_stats->fcp_output_megabytes = data->output_mb;
}