projects/linux·blob v4.2-rc1 · refs

276 lines · 7.2 KiB

1/*
2 * include/net/switchdev.h - Switch device API
3 * Copyright (c) 2014 Jiri Pirko <[email protected]>
4 * Copyright (c) 2014-2015 Scott Feldman <[email protected]>
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 } fdb;
76 } u;
77};
78
79/**
80 * struct switchdev_ops - switchdev operations
81 *
82 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
83 *
84 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
85 *
86 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj).
87 *
88 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj).
89 *
90 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj).
91 */
92struct switchdev_ops {
93 int (*switchdev_port_attr_get)(struct net_device *dev,
94 struct switchdev_attr *attr);
95 int (*switchdev_port_attr_set)(struct net_device *dev,
96 struct switchdev_attr *attr);
97 int (*switchdev_port_obj_add)(struct net_device *dev,
98 struct switchdev_obj *obj);
99 int (*switchdev_port_obj_del)(struct net_device *dev,
100 struct switchdev_obj *obj);
101 int (*switchdev_port_obj_dump)(struct net_device *dev,
102 struct switchdev_obj *obj);
103};
104
105enum switchdev_notifier_type {
106 SWITCHDEV_FDB_ADD = 1,
107 SWITCHDEV_FDB_DEL,
108};
109
110struct switchdev_notifier_info {
111 struct net_device *dev;
112};
113
114struct switchdev_notifier_fdb_info {
115 struct switchdev_notifier_info info; /* must be first */
116 const unsigned char *addr;
117 u16 vid;
118};
119
120static inline struct net_device *
121switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
122{
123 return info->dev;
124}
125
126#ifdef CONFIG_NET_SWITCHDEV
127
128int switchdev_port_attr_get(struct net_device *dev,
129 struct switchdev_attr *attr);
130int switchdev_port_attr_set(struct net_device *dev,
131 struct switchdev_attr *attr);
132int switchdev_port_obj_add(struct net_device *dev, struct switchdev_obj *obj);
133int switchdev_port_obj_del(struct net_device *dev, struct switchdev_obj *obj);
134int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj);
135int register_switchdev_notifier(struct notifier_block *nb);
136int unregister_switchdev_notifier(struct notifier_block *nb);
137int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
138 struct switchdev_notifier_info *info);
139int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
140 struct net_device *dev, u32 filter_mask,
141 int nlflags);
142int switchdev_port_bridge_setlink(struct net_device *dev,
143 struct nlmsghdr *nlh, u16 flags);
144int switchdev_port_bridge_dellink(struct net_device *dev,
145 struct nlmsghdr *nlh, u16 flags);
146int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
147 u8 tos, u8 type, u32 nlflags, u32 tb_id);
148int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
149 u8 tos, u8 type, u32 tb_id);
150void switchdev_fib_ipv4_abort(struct fib_info *fi);
151int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
152 struct net_device *dev, const unsigned char *addr,
153 u16 vid, u16 nlm_flags);
154int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
155 struct net_device *dev, const unsigned char *addr,
156 u16 vid);
157int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
158 struct net_device *dev,
159 struct net_device *filter_dev, int idx);
160
161#else
162
163static inline int switchdev_port_attr_get(struct net_device *dev,
164 struct switchdev_attr *attr)
165{
166 return -EOPNOTSUPP;
167}
168
169static inline int switchdev_port_attr_set(struct net_device *dev,
170 struct switchdev_attr *attr)
171{
172 return -EOPNOTSUPP;
173}
174
175static inline int switchdev_port_obj_add(struct net_device *dev,
176 struct switchdev_obj *obj)
177{
178 return -EOPNOTSUPP;
179}
180
181static inline int switchdev_port_obj_del(struct net_device *dev,
182 struct switchdev_obj *obj)
183{
184 return -EOPNOTSUPP;
185}
186
187static inline int switchdev_port_obj_dump(struct net_device *dev,
188 struct switchdev_obj *obj)
189{
190 return -EOPNOTSUPP;
191}
192
193static inline int register_switchdev_notifier(struct notifier_block *nb)
194{
195 return 0;
196}
197
198static inline int unregister_switchdev_notifier(struct notifier_block *nb)
199{
200 return 0;
201}
202
203static inline int call_switchdev_notifiers(unsigned long val,
204 struct net_device *dev,
205 struct switchdev_notifier_info *info)
206{
207 return NOTIFY_DONE;
208}
209
210static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
211 u32 seq, struct net_device *dev,
212 u32 filter_mask, int nlflags)
213{
214 return -EOPNOTSUPP;
215}
216
217static inline int switchdev_port_bridge_setlink(struct net_device *dev,
218 struct nlmsghdr *nlh,
219 u16 flags)
220{
221 return -EOPNOTSUPP;
222}
223
224static inline int switchdev_port_bridge_dellink(struct net_device *dev,
225 struct nlmsghdr *nlh,
226 u16 flags)
227{
228 return -EOPNOTSUPP;
229}
230
231static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
232 struct fib_info *fi,
233 u8 tos, u8 type,
234 u32 nlflags, u32 tb_id)
235{
236 return 0;
237}
238
239static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
240 struct fib_info *fi,
241 u8 tos, u8 type, u32 tb_id)
242{
243 return 0;
244}
245
246static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
247{
248}
249
250static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
251 struct net_device *dev,
252 const unsigned char *addr,
253 u16 vid, u16 nlm_flags)
254{
255 return -EOPNOTSUPP;
256}
257
258static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
259 struct net_device *dev,
260 const unsigned char *addr, u16 vid)
261{
262 return -EOPNOTSUPP;
263}
264
265static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
266 struct netlink_callback *cb,
267 struct net_device *dev,
268 struct net_device *filter_dev,
269 int idx)
270{
271 return -EOPNOTSUPP;
272}
273
274#endif
275
276#endif /* _LINUX_SWITCHDEV_H_ */