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