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1/*
2 * include/net/switchdev.h - Switch device API
7ea6eb3f 3 * Copyright (c) 2014-2015 Jiri Pirko <jiri@resnulli.us>
f8f21471 4 * Copyright (c) 2014-2015 Scott Feldman <sfeldma@gmail.com>
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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>
03bf0c28 15#include <linux/notifier.h>
7ea6eb3f 16#include <linux/list.h>
850d0cbc 17#include <net/ip_fib.h>
03bf0c28 18
3094333d 19#define SWITCHDEV_F_NO_RECURSE BIT(0)
464314ea 20#define SWITCHDEV_F_SKIP_EOPNOTSUPP BIT(1)
0bc05d58 21#define SWITCHDEV_F_DEFER BIT(2)
3094333d 22
7ea6eb3f 23struct switchdev_trans {
f623ab7f 24 bool ph_prepare;
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25};
26
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27static inline bool switchdev_trans_ph_prepare(struct switchdev_trans *trans)
28{
f623ab7f 29 return trans && trans->ph_prepare;
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30}
31
32static inline bool switchdev_trans_ph_commit(struct switchdev_trans *trans)
33{
f623ab7f 34 return trans && !trans->ph_prepare;
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35}
36
3094333d 37enum switchdev_attr_id {
1f868398 38 SWITCHDEV_ATTR_ID_UNDEFINED,
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39 SWITCHDEV_ATTR_ID_PORT_STP_STATE,
40 SWITCHDEV_ATTR_ID_PORT_BRIDGE_FLAGS,
746dc184 41 SWITCHDEV_ATTR_ID_PORT_PRE_BRIDGE_FLAGS,
6d549648 42 SWITCHDEV_ATTR_ID_PORT_MROUTER,
f55ac58a 43 SWITCHDEV_ATTR_ID_BRIDGE_AGEING_TIME,
81435c33 44 SWITCHDEV_ATTR_ID_BRIDGE_VLAN_FILTERING,
147c1e9b 45 SWITCHDEV_ATTR_ID_BRIDGE_MC_DISABLED,
77041420 46 SWITCHDEV_ATTR_ID_BRIDGE_MROUTER,
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47};
48
49struct switchdev_attr {
6ff64f6f 50 struct net_device *orig_dev;
3094333d 51 enum switchdev_attr_id id;
3094333d 52 u32 flags;
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53 void *complete_priv;
54 void (*complete)(struct net_device *dev, int err, void *priv);
f8e20a9f 55 union {
35636062 56 u8 stp_state; /* PORT_STP_STATE */
746dc184 57 unsigned long brport_flags; /* PORT_{PRE}_BRIDGE_FLAGS */
6d549648 58 bool mrouter; /* PORT_MROUTER */
eabfdda9 59 clock_t ageing_time; /* BRIDGE_AGEING_TIME */
81435c33 60 bool vlan_filtering; /* BRIDGE_VLAN_FILTERING */
147c1e9b 61 bool mc_disabled; /* MC_DISABLED */
42275bd8 62 } u;
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63};
64
491d0f15 65enum switchdev_obj_id {
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66 SWITCHDEV_OBJ_ID_UNDEFINED,
67 SWITCHDEV_OBJ_ID_PORT_VLAN,
4d41e125 68 SWITCHDEV_OBJ_ID_PORT_MDB,
47d5b6db 69 SWITCHDEV_OBJ_ID_HOST_MDB,
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70};
71
648b4a99 72struct switchdev_obj {
6ff64f6f 73 struct net_device *orig_dev;
9e8f4a54 74 enum switchdev_obj_id id;
4d429c5d 75 u32 flags;
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76 void *complete_priv;
77 void (*complete)(struct net_device *dev, int err, void *priv);
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78};
79
57d80838 80/* SWITCHDEV_OBJ_ID_PORT_VLAN */
8f24f309 81struct switchdev_obj_port_vlan {
648b4a99 82 struct switchdev_obj obj;
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83 u16 flags;
84 u16 vid_begin;
85 u16 vid_end;
86};
87
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88#define SWITCHDEV_OBJ_PORT_VLAN(OBJ) \
89 container_of((OBJ), struct switchdev_obj_port_vlan, obj)
648b4a99 90
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91/* SWITCHDEV_OBJ_ID_PORT_MDB */
92struct switchdev_obj_port_mdb {
93 struct switchdev_obj obj;
94 unsigned char addr[ETH_ALEN];
95 u16 vid;
96};
97
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98#define SWITCHDEV_OBJ_PORT_MDB(OBJ) \
99 container_of((OBJ), struct switchdev_obj_port_mdb, obj)
4d41e125 100
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101typedef int switchdev_obj_dump_cb_t(struct switchdev_obj *obj);
102
ebb9a03a 103enum switchdev_notifier_type {
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104 SWITCHDEV_FDB_ADD_TO_BRIDGE = 1,
105 SWITCHDEV_FDB_DEL_TO_BRIDGE,
106 SWITCHDEV_FDB_ADD_TO_DEVICE,
107 SWITCHDEV_FDB_DEL_TO_DEVICE,
9fe8bcec 108 SWITCHDEV_FDB_OFFLOADED,
9a997353 109
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110 SWITCHDEV_PORT_OBJ_ADD, /* Blocking. */
111 SWITCHDEV_PORT_OBJ_DEL, /* Blocking. */
1cb33af1 112 SWITCHDEV_PORT_ATTR_SET, /* May be blocking . */
aa4efe21 113
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114 SWITCHDEV_VXLAN_FDB_ADD_TO_BRIDGE,
115 SWITCHDEV_VXLAN_FDB_DEL_TO_BRIDGE,
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116 SWITCHDEV_VXLAN_FDB_ADD_TO_DEVICE,
117 SWITCHDEV_VXLAN_FDB_DEL_TO_DEVICE,
0efe1173 118 SWITCHDEV_VXLAN_FDB_OFFLOADED,
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119};
120
ebb9a03a 121struct switchdev_notifier_info {
03bf0c28 122 struct net_device *dev;
479c86dc 123 struct netlink_ext_ack *extack;
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124};
125
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126struct switchdev_notifier_fdb_info {
127 struct switchdev_notifier_info info; /* must be first */
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128 const unsigned char *addr;
129 u16 vid;
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130 u8 added_by_user:1,
131 offloaded:1;
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132};
133
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134struct switchdev_notifier_port_obj_info {
135 struct switchdev_notifier_info info; /* must be first */
136 const struct switchdev_obj *obj;
137 struct switchdev_trans *trans;
138 bool handled;
139};
140
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141struct switchdev_notifier_port_attr_info {
142 struct switchdev_notifier_info info; /* must be first */
143 const struct switchdev_attr *attr;
144 struct switchdev_trans *trans;
145 bool handled;
146};
147
03bf0c28 148static inline struct net_device *
ebb9a03a 149switchdev_notifier_info_to_dev(const struct switchdev_notifier_info *info)
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150{
151 return info->dev;
152}
007f790c 153
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154static inline struct netlink_ext_ack *
155switchdev_notifier_info_to_extack(const struct switchdev_notifier_info *info)
156{
157 return info->extack;
158}
159
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160#ifdef CONFIG_NET_SWITCHDEV
161
793f4014 162void switchdev_deferred_process(void);
3094333d 163int switchdev_port_attr_set(struct net_device *dev,
f7fadf30 164 const struct switchdev_attr *attr);
9e8f4a54 165int switchdev_port_obj_add(struct net_device *dev,
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166 const struct switchdev_obj *obj,
167 struct netlink_ext_ack *extack);
9e8f4a54 168int switchdev_port_obj_del(struct net_device *dev,
648b4a99 169 const struct switchdev_obj *obj);
a93e3b17 170
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171int register_switchdev_notifier(struct notifier_block *nb);
172int unregister_switchdev_notifier(struct notifier_block *nb);
173int call_switchdev_notifiers(unsigned long val, struct net_device *dev,
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174 struct switchdev_notifier_info *info,
175 struct netlink_ext_ack *extack);
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176
177int register_switchdev_blocking_notifier(struct notifier_block *nb);
178int unregister_switchdev_blocking_notifier(struct notifier_block *nb);
179int call_switchdev_blocking_notifiers(unsigned long val, struct net_device *dev,
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180 struct switchdev_notifier_info *info,
181 struct netlink_ext_ack *extack);
a93e3b17 182
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183void switchdev_port_fwd_mark_set(struct net_device *dev,
184 struct net_device *group_dev,
185 bool joining);
5e8d9049 186
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187int switchdev_handle_port_obj_add(struct net_device *dev,
188 struct switchdev_notifier_port_obj_info *port_obj_info,
189 bool (*check_cb)(const struct net_device *dev),
190 int (*add_cb)(struct net_device *dev,
191 const struct switchdev_obj *obj,
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192 struct switchdev_trans *trans,
193 struct netlink_ext_ack *extack));
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194int switchdev_handle_port_obj_del(struct net_device *dev,
195 struct switchdev_notifier_port_obj_info *port_obj_info,
196 bool (*check_cb)(const struct net_device *dev),
197 int (*del_cb)(struct net_device *dev,
198 const struct switchdev_obj *obj));
199
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200int switchdev_handle_port_attr_set(struct net_device *dev,
201 struct switchdev_notifier_port_attr_info *port_attr_info,
202 bool (*check_cb)(const struct net_device *dev),
203 int (*set_cb)(struct net_device *dev,
204 const struct switchdev_attr *attr,
205 struct switchdev_trans *trans));
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206#else
207
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208static inline void switchdev_deferred_process(void)
209{
210}
211
3094333d 212static inline int switchdev_port_attr_set(struct net_device *dev,
f7fadf30 213 const struct switchdev_attr *attr)
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214{
215 return -EOPNOTSUPP;
216}
217
491d0f15 218static inline int switchdev_port_obj_add(struct net_device *dev,
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219 const struct switchdev_obj *obj,
220 struct netlink_ext_ack *extack)
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221{
222 return -EOPNOTSUPP;
223}
224
225static inline int switchdev_port_obj_del(struct net_device *dev,
648b4a99 226 const struct switchdev_obj *obj)
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227{
228 return -EOPNOTSUPP;
229}
230
ebb9a03a 231static inline int register_switchdev_notifier(struct notifier_block *nb)
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232{
233 return 0;
234}
235
ebb9a03a 236static inline int unregister_switchdev_notifier(struct notifier_block *nb)
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237{
238 return 0;
239}
240
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241static inline int call_switchdev_notifiers(unsigned long val,
242 struct net_device *dev,
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243 struct switchdev_notifier_info *info,
244 struct netlink_ext_ack *extack)
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245{
246 return NOTIFY_DONE;
247}
248
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249static inline int
250register_switchdev_blocking_notifier(struct notifier_block *nb)
251{
252 return 0;
253}
254
255static inline int
256unregister_switchdev_blocking_notifier(struct notifier_block *nb)
257{
258 return 0;
259}
260
261static inline int
262call_switchdev_blocking_notifiers(unsigned long val,
263 struct net_device *dev,
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264 struct switchdev_notifier_info *info,
265 struct netlink_ext_ack *extack)
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266{
267 return NOTIFY_DONE;
268}
269
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270static inline int
271switchdev_handle_port_obj_add(struct net_device *dev,
272 struct switchdev_notifier_port_obj_info *port_obj_info,
273 bool (*check_cb)(const struct net_device *dev),
274 int (*add_cb)(struct net_device *dev,
275 const struct switchdev_obj *obj,
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276 struct switchdev_trans *trans,
277 struct netlink_ext_ack *extack))
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278{
279 return 0;
280}
281
282static inline int
283switchdev_handle_port_obj_del(struct net_device *dev,
284 struct switchdev_notifier_port_obj_info *port_obj_info,
285 bool (*check_cb)(const struct net_device *dev),
286 int (*del_cb)(struct net_device *dev,
287 const struct switchdev_obj *obj))
288{
289 return 0;
290}
291
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292static inline int
293switchdev_handle_port_attr_set(struct net_device *dev,
294 struct switchdev_notifier_port_attr_info *port_attr_info,
295 bool (*check_cb)(const struct net_device *dev),
296 int (*set_cb)(struct net_device *dev,
297 const struct switchdev_attr *attr,
298 struct switchdev_trans *trans))
299{
300 return 0;
301}
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302#endif
303
304#endif /* _LINUX_SWITCHDEV_H_ */