projects/linux·blob v4.12 · refs

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1/*
2 * include/net/switchdev.h - Switch device API
3 * Copyright (c) 2014-2015 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#include <linux/list.h>
17#include <net/ip_fib.h>
18
19#define SWITCHDEV_F_NO_RECURSE BIT(0)
20#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
21#define SWITCHDEV_F_DEFER BIT(2)
22
23struct switchdev_trans_item {
24 struct list_head list;
25 void *data;
26 void (*destructor)(const void *data);
27};
28
29struct switchdev_trans {
30 struct list_head item_list;
31 bool ph_prepare;
32};
33
34static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
35{
36 return trans && trans->ph_prepare;
37}
38
39static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
40{
41 return trans && !trans->ph_prepare;
42}
43
44enum switchdev_attr_id {
45 SWITCHDEV_ATTR_ID_UNDEFINED,
46 SWITCHDEV_ATTR_ID_PORT_PARENT_ID,
47 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
48 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
49 SWITCHDEV_ATTR_ID_PORT_MROUTER,
50 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
51 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
52 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
53};
54
55struct switchdev_attr {
56 struct net_device *orig_dev;
57 enum switchdev_attr_id id;
58 u32 flags;
59 void *complete_priv;
60 void (*complete)(struct net_device *dev, int err, void *priv);
61 union {
62 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
63 u8 stp_state; /* PORT_STP_STATE */
64 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
65 bool mrouter; /* PORT_MROUTER */
66 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
67 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
68 bool mc_disabled; /* MC_DISABLED */
69 } u;
70};
71
72enum switchdev_obj_id {
73 SWITCHDEV_OBJ_ID_UNDEFINED,
74 SWITCHDEV_OBJ_ID_PORT_VLAN,
75 SWITCHDEV_OBJ_ID_PORT_FDB,
76 SWITCHDEV_OBJ_ID_PORT_MDB,
77};
78
79struct switchdev_obj {
80 struct net_device *orig_dev;
81 enum switchdev_obj_id id;
82 u32 flags;
83 void *complete_priv;
84 void (*complete)(struct net_device *dev, int err, void *priv);
85};
86
87/* SWITCHDEV_OBJ_ID_PORT_VLAN */
88struct switchdev_obj_port_vlan {
89 struct switchdev_obj obj;
90 u16 flags;
91 u16 vid_begin;
92 u16 vid_end;
93};
94
95#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
96 container_of(obj, struct switchdev_obj_port_vlan, obj)
97
98/* SWITCHDEV_OBJ_ID_PORT_FDB */
99struct switchdev_obj_port_fdb {
100 struct switchdev_obj obj;
101 unsigned char addr[ETH_ALEN];
102 u16 vid;
103 u16 ndm_state;
104};
105
106#define SWITCHDEV_OBJ_PORT_FDB(obj) \
107 container_of(obj, struct switchdev_obj_port_fdb, obj)
108
109/* SWITCHDEV_OBJ_ID_PORT_MDB */
110struct switchdev_obj_port_mdb {
111 struct switchdev_obj obj;
112 unsigned char addr[ETH_ALEN];
113 u16 vid;
114};
115
116#define SWITCHDEV_OBJ_PORT_MDB(obj) \
117 container_of(obj, struct switchdev_obj_port_mdb, obj)
118
119void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
120 void *data, void (*destructor)(void const *),
121 struct switchdev_trans_item *tritem);
122void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
123
124typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
125
126/**
127 * struct switchdev_ops - switchdev operations
128 *
129 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
130 *
131 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
132 *
133 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
134 *
135 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
136 *
137 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
138 */
139struct switchdev_ops {
140 int (*switchdev_port_attr_get)(struct net_device *dev,
141 struct switchdev_attr *attr);
142 int (*switchdev_port_attr_set)(struct net_device *dev,
143 const struct switchdev_attr *attr,
144 struct switchdev_trans *trans);
145 int (*switchdev_port_obj_add)(struct net_device *dev,
146 const struct switchdev_obj *obj,
147 struct switchdev_trans *trans);
148 int (*switchdev_port_obj_del)(struct net_device *dev,
149 const struct switchdev_obj *obj);
150 int (*switchdev_port_obj_dump)(struct net_device *dev,
151 struct switchdev_obj *obj,
152 switchdev_obj_dump_cb_t *cb);
153};
154
155enum switchdev_notifier_type {
156 SWITCHDEV_FDB_ADD = 1,
157 SWITCHDEV_FDB_DEL,
158};
159
160struct switchdev_notifier_info {
161 struct net_device *dev;
162};
163
164struct switchdev_notifier_fdb_info {
165 struct switchdev_notifier_info info; /* must be first */
166 const unsigned char *addr;
167 u16 vid;
168};
169
170static inline struct net_device *
171switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
172{
173 return info->dev;
174}
175
176#ifdef CONFIG_NET_SWITCHDEV
177
178void switchdev_deferred_process(void);
179int switchdev_port_attr_get(struct net_device *dev,
180 struct switchdev_attr *attr);
181int switchdev_port_attr_set(struct net_device *dev,
182 const struct switchdev_attr *attr);
183int switchdev_port_obj_add(struct net_device *dev,
184 const struct switchdev_obj *obj);
185int switchdev_port_obj_del(struct net_device *dev,
186 const struct switchdev_obj *obj);
187int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
188 switchdev_obj_dump_cb_t *cb);
189int register_switchdev_notifier(struct notifier_block *nb);
190int unregister_switchdev_notifier(struct notifier_block *nb);
191int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
192 struct switchdev_notifier_info *info);
193int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
194 struct net_device *dev, u32 filter_mask,
195 int nlflags);
196int switchdev_port_bridge_setlink(struct net_device *dev,
197 struct nlmsghdr *nlh, u16 flags);
198int switchdev_port_bridge_dellink(struct net_device *dev,
199 struct nlmsghdr *nlh, u16 flags);
200int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
201 struct net_device *dev, const unsigned char *addr,
202 u16 vid, u16 nlm_flags);
203int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
204 struct net_device *dev, const unsigned char *addr,
205 u16 vid);
206int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
207 struct net_device *dev,
208 struct net_device *filter_dev, int *idx);
209void switchdev_port_fwd_mark_set(struct net_device *dev,
210 struct net_device *group_dev,
211 bool joining);
212
213bool switchdev_port_same_parent_id(struct net_device *a,
214 struct net_device *b);
215#else
216
217static inline void switchdev_deferred_process(void)
218{
219}
220
221static inline int switchdev_port_attr_get(struct net_device *dev,
222 struct switchdev_attr *attr)
223{
224 return -EOPNOTSUPP;
225}
226
227static inline int switchdev_port_attr_set(struct net_device *dev,
228 const struct switchdev_attr *attr)
229{
230 return -EOPNOTSUPP;
231}
232
233static inline int switchdev_port_obj_add(struct net_device *dev,
234 const struct switchdev_obj *obj)
235{
236 return -EOPNOTSUPP;
237}
238
239static inline int switchdev_port_obj_del(struct net_device *dev,
240 const struct switchdev_obj *obj)
241{
242 return -EOPNOTSUPP;
243}
244
245static inline int switchdev_port_obj_dump(struct net_device *dev,
246 const struct switchdev_obj *obj,
247 switchdev_obj_dump_cb_t *cb)
248{
249 return -EOPNOTSUPP;
250}
251
252static inline int register_switchdev_notifier(struct notifier_block *nb)
253{
254 return 0;
255}
256
257static inline int unregister_switchdev_notifier(struct notifier_block *nb)
258{
259 return 0;
260}
261
262static inline int call_switchdev_notifiers(unsigned long val,
263 struct net_device *dev,
264 struct switchdev_notifier_info *info)
265{
266 return NOTIFY_DONE;
267}
268
269static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
270 u32 seq, struct net_device *dev,
271 u32 filter_mask, int nlflags)
272{
273 return -EOPNOTSUPP;
274}
275
276static inline int switchdev_port_bridge_setlink(struct net_device *dev,
277 struct nlmsghdr *nlh,
278 u16 flags)
279{
280 return -EOPNOTSUPP;
281}
282
283static inline int switchdev_port_bridge_dellink(struct net_device *dev,
284 struct nlmsghdr *nlh,
285 u16 flags)
286{
287 return -EOPNOTSUPP;
288}
289
290static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
291 struct net_device *dev,
292 const unsigned char *addr,
293 u16 vid, u16 nlm_flags)
294{
295 return -EOPNOTSUPP;
296}
297
298static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
299 struct net_device *dev,
300 const unsigned char *addr, u16 vid)
301{
302 return -EOPNOTSUPP;
303}
304
305static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
306 struct netlink_callback *cb,
307 struct net_device *dev,
308 struct net_device *filter_dev,
309 int *idx)
310{
311 return *idx;
312}
313
314static inline bool switchdev_port_same_parent_id(struct net_device *a,
315 struct net_device *b)
316{
317 return false;
318}
319
320#endif
321
322#endif /* _LINUX_SWITCHDEV_H_ */