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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * include/net/switchdev.h - Switch device API
4 * Copyright (c) 2014-2015 Jiri Pirko <[email protected]>
5 * Copyright (c) 2014-2015 Scott Feldman <[email protected]>
6 */
7#ifndef _LINUX_SWITCHDEV_H_
8#define _LINUX_SWITCHDEV_H_
9
10#include <linux/netdevice.h>
11#include <linux/notifier.h>
12#include <linux/list.h>
13#include <net/ip_fib.h>
14
15#define SWITCHDEV_F_NO_RECURSE BIT(0)
16#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
17#define SWITCHDEV_F_DEFER BIT(2)
18
19struct switchdev_trans {
20 bool ph_prepare;
21};
22
23static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
24{
25 return trans && trans->ph_prepare;
26}
27
28static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
29{
30 return trans && !trans->ph_prepare;
31}
32
33enum switchdev_attr_id {
34 SWITCHDEV_ATTR_ID_UNDEFINED,
35 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
36 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
37 SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
38 SWITCHDEV_ATTR_ID_PORT_MROUTER,
39 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
40 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
41 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_PROTOCOL,
42 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
43 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
44#if IS_ENABLED(CONFIG_BRIDGE_MRP)
45 SWITCHDEV_ATTR_ID_MRP_PORT_STATE,
46 SWITCHDEV_ATTR_ID_MRP_PORT_ROLE,
47#endif
48};
49
50struct switchdev_attr {
51 struct net_device *orig_dev;
52 enum switchdev_attr_id id;
53 u32 flags;
54 void *complete_priv;
55 void (*complete)(struct net_device *dev, int err, void *priv);
56 union {
57 u8 stp_state; /* PORT_STP_STATE */
58 unsigned long brport_flags; /* PORT_{PRE}_BRIDGE_FLAGS */
59 bool mrouter; /* PORT_MROUTER */
60 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
61 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
62 u16 vlan_protocol; /* BRIDGE_VLAN_PROTOCOL */
63 bool mc_disabled; /* MC_DISABLED */
64#if IS_ENABLED(CONFIG_BRIDGE_MRP)
65 u8 mrp_port_state; /* MRP_PORT_STATE */
66 u8 mrp_port_role; /* MRP_PORT_ROLE */
67#endif
68 } u;
69};
70
71enum switchdev_obj_id {
72 SWITCHDEV_OBJ_ID_UNDEFINED,
73 SWITCHDEV_OBJ_ID_PORT_VLAN,
74 SWITCHDEV_OBJ_ID_PORT_MDB,
75 SWITCHDEV_OBJ_ID_HOST_MDB,
76#if IS_ENABLED(CONFIG_BRIDGE_MRP)
77 SWITCHDEV_OBJ_ID_MRP,
78 SWITCHDEV_OBJ_ID_RING_TEST_MRP,
79 SWITCHDEV_OBJ_ID_RING_ROLE_MRP,
80 SWITCHDEV_OBJ_ID_RING_STATE_MRP,
81 SWITCHDEV_OBJ_ID_IN_TEST_MRP,
82 SWITCHDEV_OBJ_ID_IN_ROLE_MRP,
83 SWITCHDEV_OBJ_ID_IN_STATE_MRP,
84
85#endif
86};
87
88struct switchdev_obj {
89 struct net_device *orig_dev;
90 enum switchdev_obj_id id;
91 u32 flags;
92 void *complete_priv;
93 void (*complete)(struct net_device *dev, int err, void *priv);
94};
95
96/* SWITCHDEV_OBJ_ID_PORT_VLAN */
97struct switchdev_obj_port_vlan {
98 struct switchdev_obj obj;
99 u16 flags;
100 u16 vid_begin;
101 u16 vid_end;
102};
103
104#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
105 container_of((OBJ), struct switchdev_obj_port_vlan, obj)
106
107/* SWITCHDEV_OBJ_ID_PORT_MDB */
108struct switchdev_obj_port_mdb {
109 struct switchdev_obj obj;
110 unsigned char addr[ETH_ALEN];
111 u16 vid;
112};
113
114#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
115 container_of((OBJ), struct switchdev_obj_port_mdb, obj)
116
117
118#if IS_ENABLED(CONFIG_BRIDGE_MRP)
119/* SWITCHDEV_OBJ_ID_MRP */
120struct switchdev_obj_mrp {
121 struct switchdev_obj obj;
122 struct net_device *p_port;
123 struct net_device *s_port;
124 u32 ring_id;
125 u16 prio;
126};
127
128#define SWITCHDEV_OBJ_MRP(OBJ) \
129 container_of((OBJ), struct switchdev_obj_mrp, obj)
130
131/* SWITCHDEV_OBJ_ID_RING_TEST_MRP */
132struct switchdev_obj_ring_test_mrp {
133 struct switchdev_obj obj;
134 /* The value is in us and a value of 0 represents to stop */
135 u32 interval;
136 u8 max_miss;
137 u32 ring_id;
138 u32 period;
139 bool monitor;
140};
141
142#define SWITCHDEV_OBJ_RING_TEST_MRP(OBJ) \
143 container_of((OBJ), struct switchdev_obj_ring_test_mrp, obj)
144
145/* SWICHDEV_OBJ_ID_RING_ROLE_MRP */
146struct switchdev_obj_ring_role_mrp {
147 struct switchdev_obj obj;
148 u8 ring_role;
149 u32 ring_id;
150};
151
152#define SWITCHDEV_OBJ_RING_ROLE_MRP(OBJ) \
153 container_of((OBJ), struct switchdev_obj_ring_role_mrp, obj)
154
155struct switchdev_obj_ring_state_mrp {
156 struct switchdev_obj obj;
157 u8 ring_state;
158 u32 ring_id;
159};
160
161#define SWITCHDEV_OBJ_RING_STATE_MRP(OBJ) \
162 container_of((OBJ), struct switchdev_obj_ring_state_mrp, obj)
163
164/* SWITCHDEV_OBJ_ID_IN_TEST_MRP */
165struct switchdev_obj_in_test_mrp {
166 struct switchdev_obj obj;
167 /* The value is in us and a value of 0 represents to stop */
168 u32 interval;
169 u32 in_id;
170 u32 period;
171 u8 max_miss;
172};
173
174#define SWITCHDEV_OBJ_IN_TEST_MRP(OBJ) \
175 container_of((OBJ), struct switchdev_obj_in_test_mrp, obj)
176
177/* SWICHDEV_OBJ_ID_IN_ROLE_MRP */
178struct switchdev_obj_in_role_mrp {
179 struct switchdev_obj obj;
180 struct net_device *i_port;
181 u32 ring_id;
182 u16 in_id;
183 u8 in_role;
184};
185
186#define SWITCHDEV_OBJ_IN_ROLE_MRP(OBJ) \
187 container_of((OBJ), struct switchdev_obj_in_role_mrp, obj)
188
189struct switchdev_obj_in_state_mrp {
190 struct switchdev_obj obj;
191 u32 in_id;
192 u8 in_state;
193};
194
195#define SWITCHDEV_OBJ_IN_STATE_MRP(OBJ) \
196 container_of((OBJ), struct switchdev_obj_in_state_mrp, obj)
197
198#endif
199
200typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
201
202enum switchdev_notifier_type {
203 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
204 SWITCHDEV_FDB_DEL_TO_BRIDGE,
205 SWITCHDEV_FDB_ADD_TO_DEVICE,
206 SWITCHDEV_FDB_DEL_TO_DEVICE,
207 SWITCHDEV_FDB_OFFLOADED,
208 SWITCHDEV_FDB_FLUSH_TO_BRIDGE,
209
210 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
211 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
212 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
213
214 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
215 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
216 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
217 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
218 SWITCHDEV_VXLAN_FDB_OFFLOADED,
219};
220
221struct switchdev_notifier_info {
222 struct net_device *dev;
223 struct netlink_ext_ack *extack;
224};
225
226struct switchdev_notifier_fdb_info {
227 struct switchdev_notifier_info info; /* must be first */
228 const unsigned char *addr;
229 u16 vid;
230 u8 added_by_user:1,
231 offloaded:1;
232};
233
234struct switchdev_notifier_port_obj_info {
235 struct switchdev_notifier_info info; /* must be first */
236 const struct switchdev_obj *obj;
237 struct switchdev_trans *trans;
238 bool handled;
239};
240
241struct switchdev_notifier_port_attr_info {
242 struct switchdev_notifier_info info; /* must be first */
243 const struct switchdev_attr *attr;
244 struct switchdev_trans *trans;
245 bool handled;
246};
247
248static inline struct net_device *
249switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
250{
251 return info->dev;
252}
253
254static inline struct netlink_ext_ack *
255switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
256{
257 return info->extack;
258}
259
260#ifdef CONFIG_NET_SWITCHDEV
261
262void switchdev_deferred_process(void);
263int switchdev_port_attr_set(struct net_device *dev,
264 const struct switchdev_attr *attr);
265int switchdev_port_obj_add(struct net_device *dev,
266 const struct switchdev_obj *obj,
267 struct netlink_ext_ack *extack);
268int switchdev_port_obj_del(struct net_device *dev,
269 const struct switchdev_obj *obj);
270
271int register_switchdev_notifier(struct notifier_block *nb);
272int unregister_switchdev_notifier(struct notifier_block *nb);
273int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
274 struct switchdev_notifier_info *info,
275 struct netlink_ext_ack *extack);
276
277int register_switchdev_blocking_notifier(struct notifier_block *nb);
278int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
279int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
280 struct switchdev_notifier_info *info,
281 struct netlink_ext_ack *extack);
282
283void switchdev_port_fwd_mark_set(struct net_device *dev,
284 struct net_device *group_dev,
285 bool joining);
286
287int switchdev_handle_port_obj_add(struct net_device *dev,
288 struct switchdev_notifier_port_obj_info *port_obj_info,
289 bool (*check_cb)(const struct net_device *dev),
290 int (*add_cb)(struct net_device *dev,
291 const struct switchdev_obj *obj,
292 struct switchdev_trans *trans,
293 struct netlink_ext_ack *extack));
294int switchdev_handle_port_obj_del(struct net_device *dev,
295 struct switchdev_notifier_port_obj_info *port_obj_info,
296 bool (*check_cb)(const struct net_device *dev),
297 int (*del_cb)(struct net_device *dev,
298 const struct switchdev_obj *obj));
299
300int switchdev_handle_port_attr_set(struct net_device *dev,
301 struct switchdev_notifier_port_attr_info *port_attr_info,
302 bool (*check_cb)(const struct net_device *dev),
303 int (*set_cb)(struct net_device *dev,
304 const struct switchdev_attr *attr,
305 struct switchdev_trans *trans));
306#else
307
308static inline void switchdev_deferred_process(void)
309{
310}
311
312static inline int switchdev_port_attr_set(struct net_device *dev,
313 const struct switchdev_attr *attr)
314{
315 return -EOPNOTSUPP;
316}
317
318static inline int switchdev_port_obj_add(struct net_device *dev,
319 const struct switchdev_obj *obj,
320 struct netlink_ext_ack *extack)
321{
322 return -EOPNOTSUPP;
323}
324
325static inline int switchdev_port_obj_del(struct net_device *dev,
326 const struct switchdev_obj *obj)
327{
328 return -EOPNOTSUPP;
329}
330
331static inline int register_switchdev_notifier(struct notifier_block *nb)
332{
333 return 0;
334}
335
336static inline int unregister_switchdev_notifier(struct notifier_block *nb)
337{
338 return 0;
339}
340
341static inline int call_switchdev_notifiers(unsigned long val,
342 struct net_device *dev,
343 struct switchdev_notifier_info *info,
344 struct netlink_ext_ack *extack)
345{
346 return NOTIFY_DONE;
347}
348
349static inline int
350register_switchdev_blocking_notifier(struct notifier_block *nb)
351{
352 return 0;
353}
354
355static inline int
356unregister_switchdev_blocking_notifier(struct notifier_block *nb)
357{
358 return 0;
359}
360
361static inline int
362call_switchdev_blocking_notifiers(unsigned long val,
363 struct net_device *dev,
364 struct switchdev_notifier_info *info,
365 struct netlink_ext_ack *extack)
366{
367 return NOTIFY_DONE;
368}
369
370static inline int
371switchdev_handle_port_obj_add(struct net_device *dev,
372 struct switchdev_notifier_port_obj_info *port_obj_info,
373 bool (*check_cb)(const struct net_device *dev),
374 int (*add_cb)(struct net_device *dev,
375 const struct switchdev_obj *obj,
376 struct switchdev_trans *trans,
377 struct netlink_ext_ack *extack))
378{
379 return 0;
380}
381
382static inline int
383switchdev_handle_port_obj_del(struct net_device *dev,
384 struct switchdev_notifier_port_obj_info *port_obj_info,
385 bool (*check_cb)(const struct net_device *dev),
386 int (*del_cb)(struct net_device *dev,
387 const struct switchdev_obj *obj))
388{
389 return 0;
390}
391
392static inline int
393switchdev_handle_port_attr_set(struct net_device *dev,
394 struct switchdev_notifier_port_attr_info *port_attr_info,
395 bool (*check_cb)(const struct net_device *dev),
396 int (*set_cb)(struct net_device *dev,
397 const struct switchdev_attr *attr,
398 struct switchdev_trans *trans))
399{
400 return 0;
401}
402#endif
403
404#endif /* _LINUX_SWITCHDEV_H_ */