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openvswitch: add net device refcount tracker to struct vport

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Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2021-12-06 17:30:38 -08:00 committed by Jakub Kicinski
parent e4b8954074
commit e7c8ab8419
2 changed files with 6 additions and 4 deletions
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8
net/openvswitch/vport-netdev.c
View File

@ -82,7 +82,7 @@ struct vport *ovs_netdev_link(struct vport *vport, const char *name)
err = -ENODEV;
goto error_free_vport;
}
netdev_tracker_alloc(vport->dev, &vport->dev_tracker, GFP_KERNEL);
if (vport->dev->flags & IFF_LOOPBACK ||
(vport->dev->type != ARPHRD_ETHER &&
vport->dev->type != ARPHRD_NONE) ||
@ -115,7 +115,7 @@ error_master_upper_dev_unlink:
error_unlock:
rtnl_unlock();
error_put:
dev_put(vport->dev);
dev_put_track(vport->dev, &vport->dev_tracker);
error_free_vport:
ovs_vport_free(vport);
return ERR_PTR(err);
@ -137,7 +137,7 @@ static void vport_netdev_free(struct rcu_head *rcu)
{
struct vport *vport = container_of(rcu, struct vport, rcu);
dev_put(vport->dev);
dev_put_track(vport->dev, &vport->dev_tracker);
ovs_vport_free(vport);
}
@ -173,7 +173,7 @@ void ovs_netdev_tunnel_destroy(struct vport *vport)
*/
if (vport->dev->reg_state == NETREG_REGISTERED)
rtnl_delete_link(vport->dev);
dev_put(vport->dev);
dev_put_track(vport->dev, &vport->dev_tracker);
vport->dev = NULL;
rtnl_unlock();

2
net/openvswitch/vport.h
View File

@ -58,6 +58,7 @@ struct vport_portids {
/**
* struct vport - one port within a datapath
* @dev: Pointer to net_device.
* @dev_tracker: refcount tracker for @dev reference
* @dp: Datapath to which this port belongs.
* @upcall_portids: RCU protected 'struct vport_portids'.
* @port_no: Index into @dp's @ports array.
@ -69,6 +70,7 @@ struct vport_portids {
*/
struct vport {
struct net_device *dev;
netdevice_tracker dev_tracker;
struct datapath *dp;
struct vport_portids __rcu *upcall_portids;
u16 port_no;