Linux kernel mirror (for testing)
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linux
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#define SWITCHDEV_F_NO_RECURSE BIT(0)
18
19enum switchdev_trans {
20 SWITCHDEV_TRANS_NONE,
21 SWITCHDEV_TRANS_PREPARE,
22 SWITCHDEV_TRANS_ABORT,
23 SWITCHDEV_TRANS_COMMIT,
24};
25
26enum switchdev_attr_id {
27 SWITCHDEV_ATTR_UNDEFINED,
28 SWITCHDEV_ATTR_PORT_PARENT_ID,
29 SWITCHDEV_ATTR_PORT_STP_STATE,
30 SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
31};
32
33struct switchdev_attr {
34 enum switchdev_attr_id id;
35 enum switchdev_trans trans;
36 u32 flags;
37 union {
38 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
39 u8 stp_state; /* PORT_STP_STATE */
40 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
41 } u;
42};
43
44struct fib_info;
45
46enum switchdev_obj_id {
47 SWITCHDEV_OBJ_UNDEFINED,
48 SWITCHDEV_OBJ_PORT_VLAN,
49 SWITCHDEV_OBJ_IPV4_FIB,
50 SWITCHDEV_OBJ_PORT_FDB,
51};
52
53struct switchdev_obj {
54 enum switchdev_obj_id id;
55 enum switchdev_trans trans;
56 int (*cb)(struct net_device *dev, struct switchdev_obj *obj);
57 union {
58 struct switchdev_obj_vlan { /* PORT_VLAN */
59 u16 flags;
60 u16 vid_begin;
61 u16 vid_end;
62 } vlan;
63 struct switchdev_obj_ipv4_fib { /* IPV4_FIB */
64 u32 dst;
65 int dst_len;
66 struct fib_info *fi;
67 u8 tos;
68 u8 type;
69 u32 nlflags;
70 u32 tb_id;
71 } ipv4_fib;
72 struct switchdev_obj_fdb { /* PORT_FDB */
73 const unsigned char *addr;
74 u16 vid;
75 u16 ndm_state;
76 } fdb;
77 } u;
78};
79
80/**
81 * struct switchdev_ops - switchdev operations
82 *
83 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
84 *
85 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
86 *
87 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
88 *
89 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
90 *
91 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
92 */
93struct switchdev_ops {
94 int (*switchdev_port_attr_get)(struct net_device *dev,
95 struct switchdev_attr *attr);
96 int (*switchdev_port_attr_set)(struct net_device *dev,
97 struct switchdev_attr *attr);
98 int (*switchdev_port_obj_add)(struct net_device *dev,
99 struct switchdev_obj *obj);
100 int (*switchdev_port_obj_del)(struct net_device *dev,
101 struct switchdev_obj *obj);
102 int (*switchdev_port_obj_dump)(struct net_device *dev,
103 struct switchdev_obj *obj);
104};
105
106enum switchdev_notifier_type {
107 SWITCHDEV_FDB_ADD = 1,
108 SWITCHDEV_FDB_DEL,
109};
110
111struct switchdev_notifier_info {
112 struct net_device *dev;
113};
114
115struct switchdev_notifier_fdb_info {
116 struct switchdev_notifier_info info; /* must be first */
117 const unsigned char *addr;
118 u16 vid;
119};
120
121static inline struct net_device *
122switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
123{
124 return info->dev;
125}
126
127#ifdef CONFIG_NET_SWITCHDEV
128
129int switchdev_port_attr_get(struct net_device *dev,
130 struct switchdev_attr *attr);
131int switchdev_port_attr_set(struct net_device *dev,
132 struct switchdev_attr *attr);
133int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
134int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
135int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj);
136int register_switchdev_notifier(struct notifier_block *nb);
137int unregister_switchdev_notifier(struct notifier_block *nb);
138int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
139 struct switchdev_notifier_info *info);
140int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
141 struct net_device *dev, u32 filter_mask,
142 int nlflags);
143int switchdev_port_bridge_setlink(struct net_device *dev,
144 struct nlmsghdr *nlh, u16 flags);
145int switchdev_port_bridge_dellink(struct net_device *dev,
146 struct nlmsghdr *nlh, u16 flags);
147int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
148 u8 tos, u8 type, u32 nlflags, u32 tb_id);
149int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
150 u8 tos, u8 type, u32 tb_id);
151void switchdev_fib_ipv4_abort(struct fib_info *fi);
152int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
153 struct net_device *dev, const unsigned char *addr,
154 u16 vid, u16 nlm_flags);
155int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
156 struct net_device *dev, const unsigned char *addr,
157 u16 vid);
158int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
159 struct net_device *dev,
160 struct net_device *filter_dev, int idx);
161void switchdev_port_fwd_mark_set(struct net_device *dev,
162 struct net_device *group_dev,
163 bool joining);
164
165#else
166
167static inline int switchdev_port_attr_get(struct net_device *dev,
168 struct switchdev_attr *attr)
169{
170 return -EOPNOTSUPP;
171}
172
173static inline int switchdev_port_attr_set(struct net_device *dev,
174 struct switchdev_attr *attr)
175{
176 return -EOPNOTSUPP;
177}
178
179static inline int switchdev_port_obj_add(struct net_device *dev,
180 struct switchdev_obj *obj)
181{
182 return -EOPNOTSUPP;
183}
184
185static inline int switchdev_port_obj_del(struct net_device *dev,
186 struct switchdev_obj *obj)
187{
188 return -EOPNOTSUPP;
189}
190
191static inline int switchdev_port_obj_dump(struct net_device *dev,
192 struct switchdev_obj *obj)
193{
194 return -EOPNOTSUPP;
195}
196
197static inline int register_switchdev_notifier(struct notifier_block *nb)
198{
199 return 0;
200}
201
202static inline int unregister_switchdev_notifier(struct notifier_block *nb)
203{
204 return 0;
205}
206
207static inline int call_switchdev_notifiers(unsigned long val,
208 struct net_device *dev,
209 struct switchdev_notifier_info *info)
210{
211 return NOTIFY_DONE;
212}
213
214static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
215 u32 seq, struct net_device *dev,
216 u32 filter_mask, int nlflags)
217{
218 return -EOPNOTSUPP;
219}
220
221static inline int switchdev_port_bridge_setlink(struct net_device *dev,
222 struct nlmsghdr *nlh,
223 u16 flags)
224{
225 return -EOPNOTSUPP;
226}
227
228static inline int switchdev_port_bridge_dellink(struct net_device *dev,
229 struct nlmsghdr *nlh,
230 u16 flags)
231{
232 return -EOPNOTSUPP;
233}
234
235static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
236 struct fib_info *fi,
237 u8 tos, u8 type,
238 u32 nlflags, u32 tb_id)
239{
240 return 0;
241}
242
243static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
244 struct fib_info *fi,
245 u8 tos, u8 type, u32 tb_id)
246{
247 return 0;
248}
249
250static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
251{
252}
253
254static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
255 struct net_device *dev,
256 const unsigned char *addr,
257 u16 vid, u16 nlm_flags)
258{
259 return -EOPNOTSUPP;
260}
261
262static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
263 struct net_device *dev,
264 const unsigned char *addr, u16 vid)
265{
266 return -EOPNOTSUPP;
267}
268
269static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
270 struct netlink_callback *cb,
271 struct net_device *dev,
272 struct net_device *filter_dev,
273 int idx)
274{
275 return -EOPNOTSUPP;
276}
277
278static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
279 struct net_device *group_dev,
280 bool joining)
281{
282}
283
284#endif
285
286#endif /* _LINUX_SWITCHDEV_H_ */