projects/linux·blob v4.14 · refs

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1/*
2 * include/net/switchdev.h - Switch device API
3 * Copyright (c) 2014-2015 Jiri Pirko <[email protected]>
4 * Copyright (c) 2014-2015 Scott Feldman <[email protected]>
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_MDB,
78};
79
80struct switchdev_obj {
81 struct net_device *orig_dev;
82 enum switchdev_obj_id id;
83 u32 flags;
84 void *complete_priv;
85 void (*complete)(struct net_device *dev, int err, void *priv);
86};
87
88/* SWITCHDEV_OBJ_ID_PORT_VLAN */
89struct switchdev_obj_port_vlan {
90 struct switchdev_obj obj;
91 u16 flags;
92 u16 vid_begin;
93 u16 vid_end;
94};
95
96#define SWITCHDEV_OBJ_PORT_VLAN(obj) \
97 container_of(obj, struct switchdev_obj_port_vlan, obj)
98
99/* SWITCHDEV_OBJ_ID_PORT_MDB */
100struct switchdev_obj_port_mdb {
101 struct switchdev_obj obj;
102 unsigned char addr[ETH_ALEN];
103 u16 vid;
104};
105
106#define SWITCHDEV_OBJ_PORT_MDB(obj) \
107 container_of(obj, struct switchdev_obj_port_mdb, obj)
108
109void switchdev_trans_item_enqueue(struct switchdev_trans *trans,
110 void *data, void (*destructor)(void const *),
111 struct switchdev_trans_item *tritem);
112void *switchdev_trans_item_dequeue(struct switchdev_trans *trans);
113
114typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
115
116/**
117 * struct switchdev_ops - switchdev operations
118 *
119 * @switchdev_port_attr_get: Get a port attribute (see switchdev_attr).
120 *
121 * @switchdev_port_attr_set: Set a port attribute (see switchdev_attr).
122 *
123 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
124 *
125 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
126 */
127struct switchdev_ops {
128 int (*switchdev_port_attr_get)(struct net_device *dev,
129 struct switchdev_attr *attr);
130 int (*switchdev_port_attr_set)(struct net_device *dev,
131 const struct switchdev_attr *attr,
132 struct switchdev_trans *trans);
133 int (*switchdev_port_obj_add)(struct net_device *dev,
134 const struct switchdev_obj *obj,
135 struct switchdev_trans *trans);
136 int (*switchdev_port_obj_del)(struct net_device *dev,
137 const struct switchdev_obj *obj);
138};
139
140enum switchdev_notifier_type {
141 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
142 SWITCHDEV_FDB_DEL_TO_BRIDGE,
143 SWITCHDEV_FDB_ADD_TO_DEVICE,
144 SWITCHDEV_FDB_DEL_TO_DEVICE,
145 SWITCHDEV_FDB_OFFLOADED,
146};
147
148struct switchdev_notifier_info {
149 struct net_device *dev;
150};
151
152struct switchdev_notifier_fdb_info {
153 struct switchdev_notifier_info info; /* must be first */
154 const unsigned char *addr;
155 u16 vid;
156};
157
158static inline struct net_device *
159switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
160{
161 return info->dev;
162}
163
164#ifdef CONFIG_NET_SWITCHDEV
165
166void switchdev_deferred_process(void);
167int switchdev_port_attr_get(struct net_device *dev,
168 struct switchdev_attr *attr);
169int switchdev_port_attr_set(struct net_device *dev,
170 const struct switchdev_attr *attr);
171int switchdev_port_obj_add(struct net_device *dev,
172 const struct switchdev_obj *obj);
173int switchdev_port_obj_del(struct net_device *dev,
174 const struct switchdev_obj *obj);
175int register_switchdev_notifier(struct notifier_block *nb);
176int unregister_switchdev_notifier(struct notifier_block *nb);
177int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
178 struct switchdev_notifier_info *info);
179void switchdev_port_fwd_mark_set(struct net_device *dev,
180 struct net_device *group_dev,
181 bool joining);
182
183bool switchdev_port_same_parent_id(struct net_device *a,
184 struct net_device *b);
185
186#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
187#else
188
189static inline void switchdev_deferred_process(void)
190{
191}
192
193static inline int switchdev_port_attr_get(struct net_device *dev,
194 struct switchdev_attr *attr)
195{
196 return -EOPNOTSUPP;
197}
198
199static inline int switchdev_port_attr_set(struct net_device *dev,
200 const struct switchdev_attr *attr)
201{
202 return -EOPNOTSUPP;
203}
204
205static inline int switchdev_port_obj_add(struct net_device *dev,
206 const struct switchdev_obj *obj)
207{
208 return -EOPNOTSUPP;
209}
210
211static inline int switchdev_port_obj_del(struct net_device *dev,
212 const struct switchdev_obj *obj)
213{
214 return -EOPNOTSUPP;
215}
216
217static inline int register_switchdev_notifier(struct notifier_block *nb)
218{
219 return 0;
220}
221
222static inline int unregister_switchdev_notifier(struct notifier_block *nb)
223{
224 return 0;
225}
226
227static inline int call_switchdev_notifiers(unsigned long val,
228 struct net_device *dev,
229 struct switchdev_notifier_info *info)
230{
231 return NOTIFY_DONE;
232}
233
234static inline bool switchdev_port_same_parent_id(struct net_device *a,
235 struct net_device *b)
236{
237 return false;
238}
239
240#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
241
242#endif
243
244#endif /* _LINUX_SWITCHDEV_H_ */