1/*
2 * include/net/switchdev.h - Switch device API
3 * Copyright (c) 2014 Jiri Pirko <jiri@resnulli.us>
4 * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
5 *
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
10 */
11#ifndef _LINUX_SWITCHDEV_H_
12#define _LINUX_SWITCHDEV_H_
13
14#include <linux/netdevice.h>
15#include <linux/notifier.h>
16
17struct fib_info;
18
19/**
20 * struct switchdev_ops - switchdev operations
21 *
22 * @swdev_parent_id_get: Called to get an ID of the switch chip this port
23 *   is part of.  If driver implements this, it indicates that it
24 *   represents a port of a switch chip.
25 *
26 * @swdev_port_stp_update: Called to notify switch device port of bridge
27 *   port STP state change.
28 *
29 * @swdev_fib_ipv4_add: Called to add/modify IPv4 route to switch device.
30 *
31 * @swdev_fib_ipv4_del: Called to delete IPv4 route from switch device.
32 */
33struct swdev_ops {
34	int	(*swdev_parent_id_get)(struct net_device *dev,
35				       struct netdev_phys_item_id *psid);
36	int	(*swdev_port_stp_update)(struct net_device *dev, u8 state);
37	int	(*swdev_fib_ipv4_add)(struct net_device *dev, __be32 dst,
38				      int dst_len, struct fib_info *fi,
39				      u8 tos, u8 type, u32 nlflags,
40				      u32 tb_id);
41	int	(*swdev_fib_ipv4_del)(struct net_device *dev, __be32 dst,
42				      int dst_len, struct fib_info *fi,
43				      u8 tos, u8 type, u32 tb_id);
44};
45
46enum netdev_switch_notifier_type {
47	NETDEV_SWITCH_FDB_ADD = 1,
48	NETDEV_SWITCH_FDB_DEL,
49};
50
51struct netdev_switch_notifier_info {
52	struct net_device *dev;
53};
54
55struct netdev_switch_notifier_fdb_info {
56	struct netdev_switch_notifier_info info; /* must be first */
57	const unsigned char *addr;
58	u16 vid;
59};
60
61static inline struct net_device *
62netdev_switch_notifier_info_to_dev(const struct netdev_switch_notifier_info *info)
63{
64	return info->dev;
65}
66
67#ifdef CONFIG_NET_SWITCHDEV
68
69int netdev_switch_parent_id_get(struct net_device *dev,
70				struct netdev_phys_item_id *psid);
71int netdev_switch_port_stp_update(struct net_device *dev, u8 state);
72int register_netdev_switch_notifier(struct notifier_block *nb);
73int unregister_netdev_switch_notifier(struct notifier_block *nb);
74int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
75				 struct netdev_switch_notifier_info *info);
76int netdev_switch_port_bridge_setlink(struct net_device *dev,
77				struct nlmsghdr *nlh, u16 flags);
78int netdev_switch_port_bridge_dellink(struct net_device *dev,
79				struct nlmsghdr *nlh, u16 flags);
80int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
81					       struct nlmsghdr *nlh, u16 flags);
82int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
83					       struct nlmsghdr *nlh, u16 flags);
84int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
85			       u8 tos, u8 type, u32 nlflags, u32 tb_id);
86int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
87			       u8 tos, u8 type, u32 tb_id);
88void netdev_switch_fib_ipv4_abort(struct fib_info *fi);
89
90#else
91
92static inline int netdev_switch_parent_id_get(struct net_device *dev,
93					      struct netdev_phys_item_id *psid)
94{
95	return -EOPNOTSUPP;
96}
97
98static inline int netdev_switch_port_stp_update(struct net_device *dev,
99						u8 state)
100{
101	return -EOPNOTSUPP;
102}
103
104static inline int register_netdev_switch_notifier(struct notifier_block *nb)
105{
106	return 0;
107}
108
109static inline int unregister_netdev_switch_notifier(struct notifier_block *nb)
110{
111	return 0;
112}
113
114static inline int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
115					       struct netdev_switch_notifier_info *info)
116{
117	return NOTIFY_DONE;
118}
119
120static inline int netdev_switch_port_bridge_setlink(struct net_device *dev,
121						    struct nlmsghdr *nlh,
122						    u16 flags)
123{
124	return -EOPNOTSUPP;
125}
126
127static inline int netdev_switch_port_bridge_dellink(struct net_device *dev,
128						    struct nlmsghdr *nlh,
129						    u16 flags)
130{
131	return -EOPNOTSUPP;
132}
133
134static inline int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
135							struct nlmsghdr *nlh,
136							u16 flags)
137{
138	return 0;
139}
140
141static inline int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
142							struct nlmsghdr *nlh,
143							u16 flags)
144{
145	return 0;
146}
147
148static inline int netdev_switch_fib_ipv4_add(u32 dst, int dst_len,
149					     struct fib_info *fi,
150					     u8 tos, u8 type,
151					     u32 nlflags, u32 tb_id)
152{
153	return 0;
154}
155
156static inline int netdev_switch_fib_ipv4_del(u32 dst, int dst_len,
157					     struct fib_info *fi,
158					     u8 tos, u8 type, u32 tb_id)
159{
160	return 0;
161}
162
163static inline void netdev_switch_fib_ipv4_abort(struct fib_info *fi)
164{
165}
166
167#endif
168
169#endif /* _LINUX_SWITCHDEV_H_ */
170