static int zfcp_erp_strategy_check_port(struct zfcp_port *port, int result)
{
switch (result) {
case ZFCP_ERP_SUCCEEDED :
atomic_set(&port->erp_counter, 0);
zfcp_erp_port_unblock(port);
break;
case ZFCP_ERP_FAILED :
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_NOESC) {
zfcp_erp_port_block(port, 0);
result = ZFCP_ERP_EXIT;
}
atomic_inc(&port->erp_counter);
if (atomic_read(&port->erp_counter) > ZFCP_MAX_ERPS) {
dev_err(&port->adapter->ccw_device->dev,
"ERP failed for remote port 0x%016Lx\n",
(unsigned long long)port->wwpn);
zfcp_erp_set_port_status(port,
ZFCP_STATUS_COMMON_ERP_FAILED);
}
break;
}
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
zfcp_erp_port_block(port, 0);
result = ZFCP_ERP_EXIT;
}
return result;
}
static int zfcp_erp_open_ptp_port(struct zfcp_erp_action *act)
{
struct zfcp_adapter *adapter = act->adapter;
struct zfcp_port *port = act->port;
if (port->wwpn != adapter->peer_wwpn) {
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED);
return ZFCP_ERP_FAILED;
}
port->d_id = adapter->peer_d_id;
return zfcp_erp_port_strategy_open_port(act);
}
static int _zfcp_erp_port_reopen(struct zfcp_port *port, int clear, char *id)
{
zfcp_erp_port_block(port, clear);
zfcp_scsi_schedule_rport_block(port);
if (atomic_read(&port->status) & ZFCP_STATUS_COMMON_ERP_FAILED) {
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_ERP_FAILED);
return -EIO;
}
return zfcp_erp_action_enqueue(ZFCP_ERP_ACTION_REOPEN_PORT,
port->adapter, port, NULL, id, 0);
}
static ssize_t zfcp_sysfs_port_failed_store(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
{
struct zfcp_port *port = container_of(dev, struct zfcp_port, dev);
unsigned long val;
if (strict_strtoul(buf, 0, &val) || val != 0)
return -EINVAL;
zfcp_erp_set_port_status(port, ZFCP_STATUS_COMMON_RUNNING);
zfcp_erp_port_reopen(port, ZFCP_STATUS_COMMON_ERP_FAILED, "sypfai2");
zfcp_erp_wait(port->adapter);
return count;
}
