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};
55
56struct switchdev_attr {
57 struct net_device *orig_dev;
58 enum switchdev_attr_id id;
59 u32 flags;
60 void *complete_priv;
61 void (*complete)(struct net_device *dev, int err, void *priv);
62 union {
63 struct netdev_phys_item_id ppid; /* PORT_PARENT_ID */
64 u8 stp_state; /* PORT_STP_STATE */
65 unsigned long brport_flags; /* PORT_BRIDGE_FLAGS */
66 unsigned long brport_flags_support; /* PORT_BRIDGE_FLAGS_SUPPORT */
67 bool mrouter; /* PORT_MROUTER */
68 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
69 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
70 bool mc_disabled; /* MC_DISABLED */
71 } u;
72};
73
74enum switchdev_obj_id {
75 SWITCHDEV_OBJ_ID_UNDEFINED,
76 SWITCHDEV_OBJ_ID_PORT_VLAN,
77 SWITCHDEV_OBJ_ID_PORT_FDB,
78 SWITCHDEV_OBJ_ID_PORT_MDB,
79};
80
81struct switchdev_obj {
82 struct net_device *orig_dev;
83 enum switchdev_obj_id id;
84 u32 flags;
85 void *complete_priv;
86 void (*complete)(struct net_device *dev, int err, void *priv);
87};
88
89/* SWITCHDEV_OBJ_ID_PORT_VLAN */
90struct switchdev_obj_port_vlan {
91 struct switchdev_obj obj;
92 u16 flags;
93 u16 vid_begin;
94 u16 vid_end;
95};
96
97#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
98 container_of(obj, struct switchdev_obj_port_vlan, obj)
99
100/* SWITCHDEV_OBJ_ID_PORT_FDB */
101struct switchdev_obj_port_fdb {
102 struct switchdev_obj obj;
103 unsigned char addr[ETH_ALEN];
104 u16 vid;
105 u16 ndm_state;
106};
107
108#define SWITCHDEV_OBJ_PORT_FDB(obj) \
109 container_of(obj, struct switchdev_obj_port_fdb, obj)
110
111/* SWITCHDEV_OBJ_ID_PORT_MDB */
112struct switchdev_obj_port_mdb {
113 struct switchdev_obj obj;
114 unsigned char addr[ETH_ALEN];
115 u16 vid;
116};
117
118#define SWITCHDEV_OBJ_PORT_MDB(obj) \
119 container_of(obj, struct switchdev_obj_port_mdb, obj)
120
121void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
122 void *data, void (*destructor)(void const *),
123 struct switchdev_trans_item *tritem);
124void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
125
126typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
127
128/**
129 * struct switchdev_ops - switchdev operations
130 *
131 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
132 *
133 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
134 *
135 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
136 *
137 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
138 *
139 * @switchdev_port_obj_dump: Dump port objects (see switchdev_obj_*).
140 */
141struct switchdev_ops {
142 int (*switchdev_port_attr_get)(struct net_device *dev,
143 struct switchdev_attr *attr);
144 int (*switchdev_port_attr_set)(struct net_device *dev,
145 const struct switchdev_attr *attr,
146 struct switchdev_trans *trans);
147 int (*switchdev_port_obj_add)(struct net_device *dev,
148 const struct switchdev_obj *obj,
149 struct switchdev_trans *trans);
150 int (*switchdev_port_obj_del)(struct net_device *dev,
151 const struct switchdev_obj *obj);
152 int (*switchdev_port_obj_dump)(struct net_device *dev,
153 struct switchdev_obj *obj,
154 switchdev_obj_dump_cb_t *cb);
155};
156
157enum switchdev_notifier_type {
158 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
159 SWITCHDEV_FDB_DEL_TO_BRIDGE,
160 SWITCHDEV_FDB_ADD_TO_DEVICE,
161 SWITCHDEV_FDB_DEL_TO_DEVICE,
162 SWITCHDEV_FDB_OFFLOADED,
163};
164
165struct switchdev_notifier_info {
166 struct net_device *dev;
167};
168
169struct switchdev_notifier_fdb_info {
170 struct switchdev_notifier_info info; /* must be first */
171 const unsigned char *addr;
172 u16 vid;
173};
174
175static inline struct net_device *
176switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
177{
178 return info->dev;
179}
180
181#ifdef CONFIG_NET_SWITCHDEV
182
183void switchdev_deferred_process(void);
184int switchdev_port_attr_get(struct net_device *dev,
185 struct switchdev_attr *attr);
186int switchdev_port_attr_set(struct net_device *dev,
187 const struct switchdev_attr *attr);
188int switchdev_port_obj_add(struct net_device *dev,
189 const struct switchdev_obj *obj);
190int switchdev_port_obj_del(struct net_device *dev,
191 const struct switchdev_obj *obj);
192int switchdev_port_obj_dump(struct net_device *dev, struct switchdev_obj *obj,
193 switchdev_obj_dump_cb_t *cb);
194int register_switchdev_notifier(struct notifier_block *nb);
195int unregister_switchdev_notifier(struct notifier_block *nb);
196int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
197 struct switchdev_notifier_info *info);
198int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
199 struct net_device *dev, u32 filter_mask,
200 int nlflags);
201int switchdev_port_bridge_setlink(struct net_device *dev,
202 struct nlmsghdr *nlh, u16 flags);
203int switchdev_port_bridge_dellink(struct net_device *dev,
204 struct nlmsghdr *nlh, u16 flags);
205int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
206 struct net_device *dev, const unsigned char *addr,
207 u16 vid, u16 nlm_flags);
208int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
209 struct net_device *dev, const unsigned char *addr,
210 u16 vid);
211int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
212 struct net_device *dev,
213 struct net_device *filter_dev, int *idx);
214void switchdev_port_fwd_mark_set(struct net_device *dev,
215 struct net_device *group_dev,
216 bool joining);
217
218bool switchdev_port_same_parent_id(struct net_device *a,
219 struct net_device *b);
220
221#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
222#else
223
224static inline void switchdev_deferred_process(void)
225{
226}
227
228static inline int switchdev_port_attr_get(struct net_device *dev,
229 struct switchdev_attr *attr)
230{
231 return -EOPNOTSUPP;
232}
233
234static inline int switchdev_port_attr_set(struct net_device *dev,
235 const struct switchdev_attr *attr)
236{
237 return -EOPNOTSUPP;
238}
239
240static inline int switchdev_port_obj_add(struct net_device *dev,
241 const struct switchdev_obj *obj)
242{
243 return -EOPNOTSUPP;
244}
245
246static inline int switchdev_port_obj_del(struct net_device *dev,
247 const struct switchdev_obj *obj)
248{
249 return -EOPNOTSUPP;
250}
251
252static inline int switchdev_port_obj_dump(struct net_device *dev,
253 const struct switchdev_obj *obj,
254 switchdev_obj_dump_cb_t *cb)
255{
256 return -EOPNOTSUPP;
257}
258
259static inline int register_switchdev_notifier(struct notifier_block *nb)
260{
261 return 0;
262}
263
264static inline int unregister_switchdev_notifier(struct notifier_block *nb)
265{
266 return 0;
267}
268
269static inline int call_switchdev_notifiers(unsigned long val,
270 struct net_device *dev,
271 struct switchdev_notifier_info *info)
272{
273 return NOTIFY_DONE;
274}
275
276static inline int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid,
277 u32 seq, struct net_device *dev,
278 u32 filter_mask, int nlflags)
279{
280 return -EOPNOTSUPP;
281}
282
283static inline int switchdev_port_bridge_setlink(struct net_device *dev,
284 struct nlmsghdr *nlh,
285 u16 flags)
286{
287 return -EOPNOTSUPP;
288}
289
290static inline int switchdev_port_bridge_dellink(struct net_device *dev,
291 struct nlmsghdr *nlh,
292 u16 flags)
293{
294 return -EOPNOTSUPP;
295}
296
297static inline int switchdev_port_fdb_add(struct ndmsg *ndm, struct nlattr *tb[],
298 struct net_device *dev,
299 const unsigned char *addr,
300 u16 vid, u16 nlm_flags)
301{
302 return -EOPNOTSUPP;
303}
304
305static inline int switchdev_port_fdb_del(struct ndmsg *ndm, struct nlattr *tb[],
306 struct net_device *dev,
307 const unsigned char *addr, u16 vid)
308{
309 return -EOPNOTSUPP;
310}
311
312static inline int switchdev_port_fdb_dump(struct sk_buff *skb,
313 struct netlink_callback *cb,
314 struct net_device *dev,
315 struct net_device *filter_dev,
316 int *idx)
317{
318 return *idx;
319}
320
321static inline bool switchdev_port_same_parent_id(struct net_device *a,
322 struct net_device *b)
323{
324 return false;
325}
326
327#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
328
329#endif
330
331#endif /* _LINUX_SWITCHDEV_H_ */