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_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_IPV4_FIB,
72 SWITCHDEV_OBJ_ID_PORT_FDB,
73 SWITCHDEV_OBJ_ID_PORT_MDB,
74};
75
76struct switchdev_obj {
77 struct net_device *orig_dev;
78 enum switchdev_obj_id id;
79 u32 flags;
80 void *complete_priv;
81 void (*complete)(struct net_device *dev, int err, void *priv);
82};
83
84/* SWITCHDEV_OBJ_ID_PORT_VLAN */
85struct switchdev_obj_port_vlan {
86 struct switchdev_obj obj;
87 u16 flags;
88 u16 vid_begin;
89 u16 vid_end;
90};
91
92#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
93 container_of(obj, struct switchdev_obj_port_vlan, obj)
94
95/* SWITCHDEV_OBJ_ID_IPV4_FIB */
96struct switchdev_obj_ipv4_fib {
97 struct switchdev_obj obj;
98 u32 dst;
99 int dst_len;
100 struct fib_info *fi;
101 u8 tos;
102 u8 type;
103 u32 nlflags;
104 u32 tb_id;
105};
106
107#define SWITCHDEV_OBJ_IPV4_FIB(obj) \
108 container_of(obj, struct switchdev_obj_ipv4_fib, obj)
109
110/* SWITCHDEV_OBJ_ID_PORT_FDB */
111struct switchdev_obj_port_fdb {
112 struct switchdev_obj obj;
113 unsigned char addr[ETH_ALEN];
114 u16 vid;
115 u16 ndm_state;
116};
117
118#define SWITCHDEV_OBJ_PORT_FDB(obj) \
119 container_of(obj, struct switchdev_obj_port_fdb, obj)
120
121/* SWITCHDEV_OBJ_ID_PORT_MDB */
122struct switchdev_obj_port_mdb {
123 struct switchdev_obj obj;
124 unsigned char addr[ETH_ALEN];
125 u16 vid;
126};
127
128#define SWITCHDEV_OBJ_PORT_MDB(obj) \
129 container_of(obj, struct switchdev_obj_port_mdb, obj)
130
131void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
132 void *data, void (*destructor)(void const *),
133 struct switchdev_trans_item *tritem);
134void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
135
136typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
137
138/**
139 * struct switchdev_ops - switchdev operations
140 *
141 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
142 *
143 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
144 *
145 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
146 *
147 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
148 *
149 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
150 */
151struct switchdev_ops {
152 int (*switchdev_port_attr_get)(struct net_device *dev,
153 struct switchdev_attr *attr);
154 int (*switchdev_port_attr_set)(struct net_device *dev,
155 const struct switchdev_attr *attr,
156 struct switchdev_trans *trans);
157 int (*switchdev_port_obj_add)(struct net_device *dev,
158 const struct switchdev_obj *obj,
159 struct switchdev_trans *trans);
160 int (*switchdev_port_obj_del)(struct net_device *dev,
161 const struct switchdev_obj *obj);
162 int (*switchdev_port_obj_dump)(struct net_device *dev,
163 struct switchdev_obj *obj,
164 switchdev_obj_dump_cb_t *cb);
165};
166
167enum switchdev_notifier_type {
168 SWITCHDEV_FDB_ADD = 1,
169 SWITCHDEV_FDB_DEL,
170};
171
172struct switchdev_notifier_info {
173 struct net_device *dev;
174};
175
176struct switchdev_notifier_fdb_info {
177 struct switchdev_notifier_info info; /* must be first */
178 const unsigned char *addr;
179 u16 vid;
180};
181
182static inline struct net_device *
183switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
184{
185 return info->dev;
186}
187
188#ifdef CONFIG_NET_SWITCHDEV
189
190void switchdev_deferred_process(void);
191int switchdev_port_attr_get(struct net_device *dev,
192 struct switchdev_attr *attr);
193int switchdev_port_attr_set(struct net_device *dev,
194 const struct switchdev_attr *attr);
195int switchdev_port_obj_add(struct net_device *dev,
196 const struct switchdev_obj *obj);
197int switchdev_port_obj_del(struct net_device *dev,
198 const struct switchdev_obj *obj);
199int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
200 switchdev_obj_dump_cb_t *cb);
201int register_switchdev_notifier(struct notifier_block *nb);
202int unregister_switchdev_notifier(struct notifier_block *nb);
203int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
204 struct switchdev_notifier_info *info);
205int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
206 struct net_device *dev, u32 filter_mask,
207 int nlflags);
208int switchdev_port_bridge_setlink(struct net_device *dev,
209 struct nlmsghdr *nlh, u16 flags);
210int switchdev_port_bridge_dellink(struct net_device *dev,
211 struct nlmsghdr *nlh, u16 flags);
212int switchdev_fib_ipv4_add(u32 dst, int dst_len, struct fib_info *fi,
213 u8 tos, u8 type, u32 nlflags, u32 tb_id);
214int switchdev_fib_ipv4_del(u32 dst, int dst_len, struct fib_info *fi,
215 u8 tos, u8 type, u32 tb_id);
216void switchdev_fib_ipv4_abort(struct fib_info *fi);
217int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
218 struct net_device *dev, const unsigned char *addr,
219 u16 vid, u16 nlm_flags);
220int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
221 struct net_device *dev, const unsigned char *addr,
222 u16 vid);
223int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
224 struct net_device *dev,
225 struct net_device *filter_dev, int idx);
226void switchdev_port_fwd_mark_set(struct net_device *dev,
227 struct net_device *group_dev,
228 bool joining);
229
230bool switchdev_port_same_parent_id(struct net_device *a,
231 struct net_device *b);
232#else
233
234static inline void switchdev_deferred_process(void)
235{
236}
237
238static inline int switchdev_port_attr_get(struct net_device *dev,
239 struct switchdev_attr *attr)
240{
241 return -EOPNOTSUPP;
242}
243
244static inline int switchdev_port_attr_set(struct net_device *dev,
245 const struct switchdev_attr *attr)
246{
247 return -EOPNOTSUPP;
248}
249
250static inline int switchdev_port_obj_add(struct net_device *dev,
251 const struct switchdev_obj *obj)
252{
253 return -EOPNOTSUPP;
254}
255
256static inline int switchdev_port_obj_del(struct net_device *dev,
257 const struct switchdev_obj *obj)
258{
259 return -EOPNOTSUPP;
260}
261
262static inline int switchdev_port_obj_dump(struct net_device *dev,
263 const struct switchdev_obj *obj,
264 switchdev_obj_dump_cb_t *cb)
265{
266 return -EOPNOTSUPP;
267}
268
269static inline int register_switchdev_notifier(struct notifier_block *nb)
270{
271 return 0;
272}
273
274static inline int unregister_switchdev_notifier(struct notifier_block *nb)
275{
276 return 0;
277}
278
279static inline int call_switchdev_notifiers(unsigned long val,
280 struct net_device *dev,
281 struct switchdev_notifier_info *info)
282{
283 return NOTIFY_DONE;
284}
285
286static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
287 u32 seq, struct net_device *dev,
288 u32 filter_mask, int nlflags)
289{
290 return -EOPNOTSUPP;
291}
292
293static inline int switchdev_port_bridge_setlink(struct net_device *dev,
294 struct nlmsghdr *nlh,
295 u16 flags)
296{
297 return -EOPNOTSUPP;
298}
299
300static inline int switchdev_port_bridge_dellink(struct net_device *dev,
301 struct nlmsghdr *nlh,
302 u16 flags)
303{
304 return -EOPNOTSUPP;
305}
306
307static inline int switchdev_fib_ipv4_add(u32 dst, int dst_len,
308 struct fib_info *fi,
309 u8 tos, u8 type,
310 u32 nlflags, u32 tb_id)
311{
312 return 0;
313}
314
315static inline int switchdev_fib_ipv4_del(u32 dst, int dst_len,
316 struct fib_info *fi,
317 u8 tos, u8 type, u32 tb_id)
318{
319 return 0;
320}
321
322static inline void switchdev_fib_ipv4_abort(struct fib_info *fi)
323{
324}
325
326static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
327 struct net_device *dev,
328 const unsigned char *addr,
329 u16 vid, u16 nlm_flags)
330{
331 return -EOPNOTSUPP;
332}
333
334static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
335 struct net_device *dev,
336 const unsigned char *addr, u16 vid)
337{
338 return -EOPNOTSUPP;
339}
340
341static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
342 struct netlink_callback *cb,
343 struct net_device *dev,
344 struct net_device *filter_dev,
345 int idx)
346{
347 return idx;
348}
349
350static inline void switchdev_port_fwd_mark_set(struct net_device *dev,
351 struct net_device *group_dev,
352 bool joining)
353{
354}
355
356static inline bool switchdev_port_same_parent_id(struct net_device *a,
357 struct net_device *b)
358{
359 return false;
360}
361
362#endif
363
364#endif /* _LINUX_SWITCHDEV_H_ */