The fc_rport structure reserves a reference where a LLD can put
information required in a situation where the fc transport class is
triggering LLD callbacks. The zfcp driver was using this variable
directly which is discouraged. This patch solves this issue by making
this reference unnecessary. In addition the dev_loss_tmo callback is
removed, it is not required: zfcp does not access the fc_rport after
calling fc_remote_port_delete.
Signed-off-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>
write_lock_irq(&zfcp_data.config_lock);
list_del(&port->list);
write_unlock_irq(&zfcp_data.config_lock);
write_lock_irq(&zfcp_data.config_lock);
list_del(&port->list);
write_unlock_irq(&zfcp_data.config_lock);
- if (port->rport) {
- port->rport->dd_data = NULL;
- port->rport = NULL;
- }
wait_event(port->remove_wq, atomic_read(&port->refcount) == 0);
cancel_work_sync(&port->rport_work); /* usually not necessary */
zfcp_adapter_put(port->adapter);
wait_event(port->remove_wq, atomic_read(&port->refcount) == 0);
cancel_work_sync(&port->rport_work); /* usually not necessary */
zfcp_adapter_put(port->adapter);
els_fc_job->els.adapter = adapter;
if (rport) {
read_lock_irq(&zfcp_data.config_lock);
els_fc_job->els.adapter = adapter;
if (rport) {
read_lock_irq(&zfcp_data.config_lock);
+ port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
if (port)
els_fc_job->els.d_id = port->d_id;
read_unlock_irq(&zfcp_data.config_lock);
if (port)
els_fc_job->els.d_id = port->d_id;
read_unlock_irq(&zfcp_data.config_lock);
rport->dev_loss_tmo = 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;
-
- write_lock_irq(&zfcp_data.config_lock);
- port = rport->dd_data;
- if (port)
- 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
/**
* zfcp_scsi_terminate_rport_io - Terminate all I/O on a rport
* @rport: The FC rport where to teminate I/O
static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
{
struct zfcp_port *port;
static void zfcp_scsi_terminate_rport_io(struct fc_rport *rport)
{
struct zfcp_port *port;
+ struct Scsi_Host *shost = rport_to_shost(rport);
+ struct zfcp_adapter *adapter =
+ (struct zfcp_adapter *)shost->hostdata[0];
write_lock_irq(&zfcp_data.config_lock);
write_lock_irq(&zfcp_data.config_lock);
+ port = zfcp_get_port_by_wwpn(adapter, rport->port_name);
if (port)
zfcp_port_get(port);
write_unlock_irq(&zfcp_data.config_lock);
if (port)
zfcp_port_get(port);
write_unlock_irq(&zfcp_data.config_lock);
rport->maxframe_size = port->maxframe_size;
rport->supported_classes = port->supported_classes;
port->rport = rport;
rport->maxframe_size = port->maxframe_size;
rport->supported_classes = port->supported_classes;
port->rport = rport;
.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,
.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,
.bsg_request = zfcp_execute_fc_job,
.terminate_rport_io = zfcp_scsi_terminate_rport_io,
.show_host_port_state = 1,
.bsg_request = zfcp_execute_fc_job,