Linux kernel mirror (for testing)
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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_PORT_BRIDGE_FLAGS_SUPPORT,
50 SWITCHDEV_ATTR_ID_PORT_MROUTER,
51 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
52 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
53 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
54 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
55};
56
57struct switchdev_attr {
58 struct net_device *orig_dev;
59 enum switchdev_attr_id id;
60 u32 flags;
61 void *complete_priv;
62 void (*complete)(struct net_device *dev, int err, void *priv);
63 union {
64 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
65 u8 stp_state; /* PORT_STP_STATE */
66 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
67 unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */
68 bool mrouter; /* PORT_MROUTER */
69 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
70 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
71 bool mc_disabled; /* MC_DISABLED */
72 } u;
73};
74
75enum switchdev_obj_id {
76 SWITCHDEV_OBJ_ID_UNDEFINED,
77 SWITCHDEV_OBJ_ID_PORT_VLAN,
78 SWITCHDEV_OBJ_ID_PORT_MDB,
79 SWITCHDEV_OBJ_ID_HOST_MDB,
80};
81
82struct switchdev_obj {
83 struct net_device *orig_dev;
84 enum switchdev_obj_id id;
85 u32 flags;
86 void *complete_priv;
87 void (*complete)(struct net_device *dev, int err, void *priv);
88};
89
90/* SWITCHDEV_OBJ_ID_PORT_VLAN */
91struct switchdev_obj_port_vlan {
92 struct switchdev_obj obj;
93 u16 flags;
94 u16 vid_begin;
95 u16 vid_end;
96};
97
98#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
99 container_of((OBJ), struct switchdev_obj_port_vlan, obj)
100
101/* SWITCHDEV_OBJ_ID_PORT_MDB */
102struct switchdev_obj_port_mdb {
103 struct switchdev_obj obj;
104 unsigned char addr[ETH_ALEN];
105 u16 vid;
106};
107
108#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
109 container_of((OBJ), struct switchdev_obj_port_mdb, obj)
110
111void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
112 void *data, void (*destructor)(void const *),
113 struct switchdev_trans_item *tritem);
114void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
115
116typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
117
118/**
119 * struct switchdev_ops - switchdev operations
120 *
121 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
122 *
123 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
124 */
125struct switchdev_ops {
126 int (*switchdev_port_attr_get)(struct net_device *dev,
127 struct switchdev_attr *attr);
128 int (*switchdev_port_attr_set)(struct net_device *dev,
129 const struct switchdev_attr *attr,
130 struct switchdev_trans *trans);
131};
132
133enum switchdev_notifier_type {
134 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
135 SWITCHDEV_FDB_DEL_TO_BRIDGE,
136 SWITCHDEV_FDB_ADD_TO_DEVICE,
137 SWITCHDEV_FDB_DEL_TO_DEVICE,
138 SWITCHDEV_FDB_OFFLOADED,
139
140 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
141 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
142
143 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
144 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
145 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
146 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
147 SWITCHDEV_VXLAN_FDB_OFFLOADED,
148};
149
150struct switchdev_notifier_info {
151 struct net_device *dev;
152 struct netlink_ext_ack *extack;
153};
154
155struct switchdev_notifier_fdb_info {
156 struct switchdev_notifier_info info; /* must be first */
157 const unsigned char *addr;
158 u16 vid;
159 u8 added_by_user:1,
160 offloaded:1;
161};
162
163struct switchdev_notifier_port_obj_info {
164 struct switchdev_notifier_info info; /* must be first */
165 const struct switchdev_obj *obj;
166 struct switchdev_trans *trans;
167 bool handled;
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
176static inline struct netlink_ext_ack *
177switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
178{
179 return info->extack;
180}
181
182#ifdef CONFIG_NET_SWITCHDEV
183
184void switchdev_deferred_process(void);
185int switchdev_port_attr_get(struct net_device *dev,
186 struct switchdev_attr *attr);
187int switchdev_port_attr_set(struct net_device *dev,
188 const struct switchdev_attr *attr);
189int switchdev_port_obj_add(struct net_device *dev,
190 const struct switchdev_obj *obj,
191 struct netlink_ext_ack *extack);
192int switchdev_port_obj_del(struct net_device *dev,
193 const struct switchdev_obj *obj);
194
195int register_switchdev_notifier(struct notifier_block *nb);
196int unregister_switchdev_notifier(struct notifier_block *nb);
197int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
198 struct switchdev_notifier_info *info);
199
200int register_switchdev_blocking_notifier(struct notifier_block *nb);
201int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
202int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
203 struct switchdev_notifier_info *info,
204 struct netlink_ext_ack *extack);
205
206void switchdev_port_fwd_mark_set(struct net_device *dev,
207 struct net_device *group_dev,
208 bool joining);
209
210bool switchdev_port_same_parent_id(struct net_device *a,
211 struct net_device *b);
212
213int switchdev_handle_port_obj_add(struct net_device *dev,
214 struct switchdev_notifier_port_obj_info *port_obj_info,
215 bool (*check_cb)(const struct net_device *dev),
216 int (*add_cb)(struct net_device *dev,
217 const struct switchdev_obj *obj,
218 struct switchdev_trans *trans,
219 struct netlink_ext_ack *extack));
220int switchdev_handle_port_obj_del(struct net_device *dev,
221 struct switchdev_notifier_port_obj_info *port_obj_info,
222 bool (*check_cb)(const struct net_device *dev),
223 int (*del_cb)(struct net_device *dev,
224 const struct switchdev_obj *obj));
225
226#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
227#else
228
229static inline void switchdev_deferred_process(void)
230{
231}
232
233static inline int switchdev_port_attr_get(struct net_device *dev,
234 struct switchdev_attr *attr)
235{
236 return -EOPNOTSUPP;
237}
238
239static inline int switchdev_port_attr_set(struct net_device *dev,
240 const struct switchdev_attr *attr)
241{
242 return -EOPNOTSUPP;
243}
244
245static inline int switchdev_port_obj_add(struct net_device *dev,
246 const struct switchdev_obj *obj,
247 struct netlink_ext_ack *extack)
248{
249 return -EOPNOTSUPP;
250}
251
252static inline int switchdev_port_obj_del(struct net_device *dev,
253 const struct switchdev_obj *obj)
254{
255 return -EOPNOTSUPP;
256}
257
258static inline int register_switchdev_notifier(struct notifier_block *nb)
259{
260 return 0;
261}
262
263static inline int unregister_switchdev_notifier(struct notifier_block *nb)
264{
265 return 0;
266}
267
268static inline int call_switchdev_notifiers(unsigned long val,
269 struct net_device *dev,
270 struct switchdev_notifier_info *info)
271{
272 return NOTIFY_DONE;
273}
274
275static inline int
276register_switchdev_blocking_notifier(struct notifier_block *nb)
277{
278 return 0;
279}
280
281static inline int
282unregister_switchdev_blocking_notifier(struct notifier_block *nb)
283{
284 return 0;
285}
286
287static inline int
288call_switchdev_blocking_notifiers(unsigned long val,
289 struct net_device *dev,
290 struct switchdev_notifier_info *info,
291 struct netlink_ext_ack *extack)
292{
293 return NOTIFY_DONE;
294}
295
296static inline bool switchdev_port_same_parent_id(struct net_device *a,
297 struct net_device *b)
298{
299 return false;
300}
301
302static inline int
303switchdev_handle_port_obj_add(struct net_device *dev,
304 struct switchdev_notifier_port_obj_info *port_obj_info,
305 bool (*check_cb)(const struct net_device *dev),
306 int (*add_cb)(struct net_device *dev,
307 const struct switchdev_obj *obj,
308 struct switchdev_trans *trans,
309 struct netlink_ext_ack *extack))
310{
311 return 0;
312}
313
314static inline int
315switchdev_handle_port_obj_del(struct net_device *dev,
316 struct switchdev_notifier_port_obj_info *port_obj_info,
317 bool (*check_cb)(const struct net_device *dev),
318 int (*del_cb)(struct net_device *dev,
319 const struct switchdev_obj *obj))
320{
321 return 0;
322}
323
324#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
325
326#endif
327
328#endif /* _LINUX_SWITCHDEV_H_ */