xref: /openbmc/linux/net/switchdev/switchdev.c (revision c819e2cf)
1 /*
2  * net/switchdev/switchdev.c - Switch device API
3  * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
4  *
5  * This program is free software; you can redistribute it and/or modify
6  * it under the terms of the GNU General Public License as published by
7  * the Free Software Foundation; either version 2 of the License, or
8  * (at your option) any later version.
9  */
10 
11 #include <linux/kernel.h>
12 #include <linux/types.h>
13 #include <linux/init.h>
14 #include <linux/netdevice.h>
15 #include <net/switchdev.h>
16 
17 /**
18  *	netdev_switch_parent_id_get - Get ID of a switch
19  *	@dev: port device
20  *	@psid: switch ID
21  *
22  *	Get ID of a switch this port is part of.
23  */
24 int netdev_switch_parent_id_get(struct net_device *dev,
25 				struct netdev_phys_item_id *psid)
26 {
27 	const struct net_device_ops *ops = dev->netdev_ops;
28 
29 	if (!ops->ndo_switch_parent_id_get)
30 		return -EOPNOTSUPP;
31 	return ops->ndo_switch_parent_id_get(dev, psid);
32 }
33 EXPORT_SYMBOL(netdev_switch_parent_id_get);
34 
35 /**
36  *	netdev_switch_port_stp_update - Notify switch device port of STP
37  *					state change
38  *	@dev: port device
39  *	@state: port STP state
40  *
41  *	Notify switch device port of bridge port STP state change.
42  */
43 int netdev_switch_port_stp_update(struct net_device *dev, u8 state)
44 {
45 	const struct net_device_ops *ops = dev->netdev_ops;
46 
47 	if (!ops->ndo_switch_port_stp_update)
48 		return -EOPNOTSUPP;
49 	WARN_ON(!ops->ndo_switch_parent_id_get);
50 	return ops->ndo_switch_port_stp_update(dev, state);
51 }
52 EXPORT_SYMBOL(netdev_switch_port_stp_update);
53