1 /* SPDX-License-Identifier: GPL-2.0
2  * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
3  */
4 
5 #ifndef _NET_DSA_8021Q_H
6 #define _NET_DSA_8021Q_H
7 
8 #include <net/dsa.h>
9 #include <linux/types.h>
10 
11 /* VBID is limited to three bits only and zero is reserved.
12  * Only 7 bridges can be enumerated.
13  */
14 #define DSA_TAG_8021Q_MAX_NUM_BRIDGES	7
15 
16 int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto);
17 
18 void dsa_tag_8021q_unregister(struct dsa_switch *ds);
19 
20 int dsa_tag_8021q_bridge_join(struct dsa_switch *ds, int port,
21 			      struct dsa_bridge bridge, bool *tx_fwd_offload,
22 			      struct netlink_ext_ack *extack);
23 
24 void dsa_tag_8021q_bridge_leave(struct dsa_switch *ds, int port,
25 				struct dsa_bridge bridge);
26 
27 u16 dsa_tag_8021q_bridge_vid(unsigned int bridge_num);
28 
29 u16 dsa_tag_8021q_standalone_vid(const struct dsa_port *dp);
30 
31 int dsa_8021q_rx_switch_id(u16 vid);
32 
33 int dsa_8021q_rx_source_port(u16 vid);
34 
35 bool vid_is_dsa_8021q(u16 vid);
36 
37 #endif /* _NET_DSA_8021Q_H */
38