projects/linux·blob v4.17 · 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 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 *
125 * @switchdev_port_obj_add: Add an object to port (see switchdev_obj_*).
126 *
127 * @switchdev_port_obj_del: Delete an object from port (see switchdev_obj_*).
128 */
129struct switchdev_ops {
130 int (*switchdev_port_attr_get)(struct net_device *dev,
131 struct switchdev_attr *attr);
132 int (*switchdev_port_attr_set)(struct net_device *dev,
133 const struct switchdev_attr *attr,
134 struct switchdev_trans *trans);
135 int (*switchdev_port_obj_add)(struct net_device *dev,
136 const struct switchdev_obj *obj,
137 struct switchdev_trans *trans);
138 int (*switchdev_port_obj_del)(struct net_device *dev,
139 const struct switchdev_obj *obj);
140};
141
142enum switchdev_notifier_type {
143 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
144 SWITCHDEV_FDB_DEL_TO_BRIDGE,
145 SWITCHDEV_FDB_ADD_TO_DEVICE,
146 SWITCHDEV_FDB_DEL_TO_DEVICE,
147 SWITCHDEV_FDB_OFFLOADED,
148};
149
150struct switchdev_notifier_info {
151 struct net_device *dev;
152};
153
154struct switchdev_notifier_fdb_info {
155 struct switchdev_notifier_info info; /* must be first */
156 const unsigned char *addr;
157 u16 vid;
158};
159
160static inline struct net_device *
161switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
162{
163 return info->dev;
164}
165
166#ifdef CONFIG_NET_SWITCHDEV
167
168void switchdev_deferred_process(void);
169int switchdev_port_attr_get(struct net_device *dev,
170 struct switchdev_attr *attr);
171int switchdev_port_attr_set(struct net_device *dev,
172 const struct switchdev_attr *attr);
173int switchdev_port_obj_add(struct net_device *dev,
174 const struct switchdev_obj *obj);
175int switchdev_port_obj_del(struct net_device *dev,
176 const struct switchdev_obj *obj);
177int register_switchdev_notifier(struct notifier_block *nb);
178int unregister_switchdev_notifier(struct notifier_block *nb);
179int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
180 struct switchdev_notifier_info *info);
181void switchdev_port_fwd_mark_set(struct net_device *dev,
182 struct net_device *group_dev,
183 bool joining);
184
185bool switchdev_port_same_parent_id(struct net_device *a,
186 struct net_device *b);
187
188#define SWITCHDEV_SET_OPS(netdev, ops) ((netdev)->switchdev_ops = (ops))
189#else
190
191static inline void switchdev_deferred_process(void)
192{
193}
194
195static inline int switchdev_port_attr_get(struct net_device *dev,
196 struct switchdev_attr *attr)
197{
198 return -EOPNOTSUPP;
199}
200
201static inline int switchdev_port_attr_set(struct net_device *dev,
202 const struct switchdev_attr *attr)
203{
204 return -EOPNOTSUPP;
205}
206
207static inline int switchdev_port_obj_add(struct net_device *dev,
208 const struct switchdev_obj *obj)
209{
210 return -EOPNOTSUPP;
211}
212
213static inline int switchdev_port_obj_del(struct net_device *dev,
214 const struct switchdev_obj *obj)
215{
216 return -EOPNOTSUPP;
217}
218
219static inline int register_switchdev_notifier(struct notifier_block *nb)
220{
221 return 0;
222}
223
224static inline int unregister_switchdev_notifier(struct notifier_block *nb)
225{
226 return 0;
227}
228
229static inline int call_switchdev_notifiers(unsigned long val,
230 struct net_device *dev,
231 struct switchdev_notifier_info *info)
232{
233 return NOTIFY_DONE;
234}
235
236static inline bool switchdev_port_same_parent_id(struct net_device *a,
237 struct net_device *b)
238{
239 return false;
240}
241
242#define SWITCHDEV_SET_OPS(netdev, ops) do {} while (0)
243
244#endif
245
246#endif /* _LINUX_SWITCHDEV_H_ */