static int zfcp_erp_adapter_strat_fsf_xconf(struct zfcp_erp_action *erp_action)
{
int retries;
int sleep = 1;
struct zfcp_adapter *adapter = erp_action->adapter;
atomic_clear_mask(ZFCP_STATUS_ADAPTER_XCONFIG_OK, &adapter->status);
for (retries = 7; retries; retries--) {
atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
write_lock_irq(&adapter->erp_lock);
zfcp_erp_action_to_running(erp_action);
write_unlock_irq(&adapter->erp_lock);
if (zfcp_fsf_exchange_config_data(erp_action)) {
atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
return ZFCP_ERP_FAILED;
}
zfcp_dbf_rec_thread_lock("erasfx1", adapter->dbf);
wait_event(adapter->erp_ready_wq,
!list_empty(&adapter->erp_ready_head));
zfcp_dbf_rec_thread_lock("erasfx2", adapter->dbf);
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT)
break;
if (!(atomic_read(&adapter->status) &
ZFCP_STATUS_ADAPTER_HOST_CON_INIT))
break;
ssleep(sleep);
sleep *= 2;
}
atomic_clear_mask(ZFCP_STATUS_ADAPTER_HOST_CON_INIT,
&adapter->status);
if (!(atomic_read(&adapter->status) & ZFCP_STATUS_ADAPTER_XCONFIG_OK))
return ZFCP_ERP_FAILED;
if (fc_host_port_type(adapter->scsi_host) == FC_PORTTYPE_PTP)
zfcp_erp_enqueue_ptp_port(adapter);
return ZFCP_ERP_SUCCEEDED;
}
static int zfcp_erp_adapter_strategy_open_fsf_xport(struct zfcp_erp_action *act)
{
int ret;
struct zfcp_adapter *adapter = act->adapter;
write_lock_irq(&adapter->erp_lock);
zfcp_erp_action_to_running(act);
write_unlock_irq(&adapter->erp_lock);
ret = zfcp_fsf_exchange_port_data(act);
if (ret == -EOPNOTSUPP)
return ZFCP_ERP_SUCCEEDED;
if (ret)
return ZFCP_ERP_FAILED;
zfcp_rec_dbf_event_thread_lock("erasox1", adapter);
down(&adapter->erp_ready_sem);
zfcp_rec_dbf_event_thread_lock("erasox2", adapter);
if (act->status & ZFCP_STATUS_ERP_TIMEDOUT)
return ZFCP_ERP_FAILED;
return ZFCP_ERP_SUCCEEDED;
}
static int zfcp_erp_strategy(struct zfcp_erp_action *erp_action)
{
int retval;
struct zfcp_adapter *adapter = erp_action->adapter;
unsigned long flags;
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
zfcp_erp_strategy_check_fsfreq(erp_action);
if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED) {
zfcp_erp_action_dequeue(erp_action);
retval = ZFCP_ERP_DISMISSED;
goto unlock;
}
if (erp_action->status & ZFCP_STATUS_ERP_TIMEDOUT) {
retval = ZFCP_ERP_FAILED;
goto check_target;
}
zfcp_erp_action_to_running(erp_action);
/* no lock to allow for blocking operations */
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
retval = zfcp_erp_strategy_do_action(erp_action);
read_lock_irqsave(&zfcp_data.config_lock, flags);
write_lock(&adapter->erp_lock);
if (erp_action->status & ZFCP_STATUS_ERP_DISMISSED)
retval = ZFCP_ERP_CONTINUES;
switch (retval) {
case ZFCP_ERP_NOMEM:
if (!(erp_action->status & ZFCP_STATUS_ERP_LOWMEM)) {
++adapter->erp_low_mem_count;
erp_action->status |= ZFCP_STATUS_ERP_LOWMEM;
}
if (adapter->erp_total_count == adapter->erp_low_mem_count)
_zfcp_erp_adapter_reopen(adapter, 0, "erstgy1", NULL);
else {
zfcp_erp_strategy_memwait(erp_action);
retval = ZFCP_ERP_CONTINUES;
}
goto unlock;
case ZFCP_ERP_CONTINUES:
if (erp_action->status & ZFCP_STATUS_ERP_LOWMEM) {
--adapter->erp_low_mem_count;
erp_action->status &= ~ZFCP_STATUS_ERP_LOWMEM;
}
goto unlock;
}
check_target:
retval = zfcp_erp_strategy_check_target(erp_action, retval);
zfcp_erp_action_dequeue(erp_action);
retval = zfcp_erp_strategy_statechange(erp_action, retval);
if (retval == ZFCP_ERP_EXIT)
goto unlock;
if (retval == ZFCP_ERP_SUCCEEDED)
zfcp_erp_strategy_followup_success(erp_action);
if (retval == ZFCP_ERP_FAILED)
zfcp_erp_strategy_followup_failed(erp_action);
unlock:
write_unlock(&adapter->erp_lock);
read_unlock_irqrestore(&zfcp_data.config_lock, flags);
if (retval != ZFCP_ERP_CONTINUES)
zfcp_erp_action_cleanup(erp_action, retval);
return retval;
}
