1/* SPDX-License-Identifier: GPL-2.0 */
 2#ifndef __NET_NCSI_H
 3#define __NET_NCSI_H
 4
 5/*
 6 * The NCSI device states seen from external. More NCSI device states are
 7 * only visible internally (in net/ncsi/internal.h). When the NCSI device
 8 * is registered, it's in ncsi_dev_state_registered state. The state
 9 * ncsi_dev_state_start is used to drive to choose active package and
10 * channel. After that, its state is changed to ncsi_dev_state_functional.
11 *
12 * The state ncsi_dev_state_stop helps to shut down the currently active
13 * package and channel while ncsi_dev_state_config helps to reconfigure
14 * them.
15 */
16enum {
17	ncsi_dev_state_registered	= 0x0000,
18	ncsi_dev_state_functional	= 0x0100,
19	ncsi_dev_state_probe		= 0x0200,
20	ncsi_dev_state_config		= 0x0300,
21	ncsi_dev_state_suspend		= 0x0400,
22};
23
24struct ncsi_dev {
25	int               state;
26	int		  link_up;
27	struct net_device *dev;
28	void		  (*handler)(struct ncsi_dev *ndev);
29};
30
31#ifdef CONFIG_NET_NCSI
32int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid);
33int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid);
34struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
35				   void (*notifier)(struct ncsi_dev *nd));
36int ncsi_start_dev(struct ncsi_dev *nd);
37void ncsi_stop_dev(struct ncsi_dev *nd);
38void ncsi_unregister_dev(struct ncsi_dev *nd);
39#else /* !CONFIG_NET_NCSI */
40static inline int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
41{
42	return -EINVAL;
43}
44
45static inline int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
46{
47	return -EINVAL;
48}
49
50static inline struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
51					void (*notifier)(struct ncsi_dev *nd))
52{
53	return NULL;
54}
55
56static inline int ncsi_start_dev(struct ncsi_dev *nd)
57{
58	return -ENOTTY;
59}
60
61static void ncsi_stop_dev(struct ncsi_dev *nd)
62{
63}
64
65static inline void ncsi_unregister_dev(struct ncsi_dev *nd)
66{
67}
68#endif /* CONFIG_NET_NCSI */
69
70#endif /* __NET_NCSI_H */