xref: /openbmc/linux/include/net/switchdev.h (revision d7a3d85e)
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 
17 struct 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  */
33 struct 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 
46 enum netdev_switch_notifier_type {
47 	NETDEV_SWITCH_FDB_ADD = 1,
48 	NETDEV_SWITCH_FDB_DEL,
49 };
50 
51 struct netdev_switch_notifier_info {
52 	struct net_device *dev;
53 };
54 
55 struct 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 
61 static inline struct net_device *
62 netdev_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 
69 int netdev_switch_parent_id_get(struct net_device *dev,
70 				struct netdev_phys_item_id *psid);
71 int netdev_switch_port_stp_update(struct net_device *dev, u8 state);
72 int register_netdev_switch_notifier(struct notifier_block *nb);
73 int unregister_netdev_switch_notifier(struct notifier_block *nb);
74 int call_netdev_switch_notifiers(unsigned long val, struct net_device *dev,
75 				 struct netdev_switch_notifier_info *info);
76 int netdev_switch_port_bridge_setlink(struct net_device *dev,
77 				struct nlmsghdr *nlh, u16 flags);
78 int netdev_switch_port_bridge_dellink(struct net_device *dev,
79 				struct nlmsghdr *nlh, u16 flags);
80 int ndo_dflt_netdev_switch_port_bridge_dellink(struct net_device *dev,
81 					       struct nlmsghdr *nlh, u16 flags);
82 int ndo_dflt_netdev_switch_port_bridge_setlink(struct net_device *dev,
83 					       struct nlmsghdr *nlh, u16 flags);
84 int netdev_switch_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
85 			       u8 tos, u8 type, u32 nlflags, u32 tb_id);
86 int netdev_switch_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
87 			       u8 tos, u8 type, u32 tb_id);
88 void netdev_switch_fib_ipv4_abort(struct fib_info *fi);
89 
90 #else
91 
92 static inline int netdev_switch_parent_id_get(struct net_device *dev,
93 					      struct netdev_phys_item_id *psid)
94 {
95 	return -EOPNOTSUPP;
96 }
97 
98 static inline int netdev_switch_port_stp_update(struct net_device *dev,
99 						u8 state)
100 {
101 	return -EOPNOTSUPP;
102 }
103 
104 static inline int register_netdev_switch_notifier(struct notifier_block *nb)
105 {
106 	return 0;
107 }
108 
109 static inline int unregister_netdev_switch_notifier(struct notifier_block *nb)
110 {
111 	return 0;
112 }
113 
114 static 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 
120 static inline int netdev_switch_port_bridge_setlink(struct net_device *dev,
121 						    struct nlmsghdr *nlh,
122 						    u16 flags)
123 {
124 	return -EOPNOTSUPP;
125 }
126 
127 static inline int netdev_switch_port_bridge_dellink(struct net_device *dev,
128 						    struct nlmsghdr *nlh,
129 						    u16 flags)
130 {
131 	return -EOPNOTSUPP;
132 }
133 
134 static 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 
141 static 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 
148 static 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 
156 static 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 
163 static inline void netdev_switch_fib_ipv4_abort(struct fib_info *fi)
164 {
165 }
166 
167 #endif
168 
169 #endif /* _LINUX_SWITCHDEV_H_ */
170