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 <linux/refcount.h>
9 #include <linux/types.h>
10 
11 struct dsa_switch;
12 struct dsa_port;
13 struct sk_buff;
14 struct net_device;
15 
16 struct dsa_tag_8021q_vlan {
17 	struct list_head list;
18 	int port;
19 	u16 vid;
20 	refcount_t refcount;
21 };
22 
23 struct dsa_8021q_context {
24 	struct dsa_switch *ds;
25 	struct list_head vlans;
26 	/* EtherType of RX VID, used for filtering on master interface */
27 	__be16 proto;
28 };
29 
30 int dsa_tag_8021q_register(struct dsa_switch *ds, __be16 proto);
31 
32 void dsa_tag_8021q_unregister(struct dsa_switch *ds);
33 
34 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
35 			       u16 tpid, u16 tci);
36 
37 void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id);
38 
39 int dsa_tag_8021q_bridge_tx_fwd_offload(struct dsa_switch *ds, int port,
40 					struct net_device *br,
41 					int bridge_num);
42 
43 void dsa_tag_8021q_bridge_tx_fwd_unoffload(struct dsa_switch *ds, int port,
44 					   struct net_device *br,
45 					   int bridge_num);
46 
47 u16 dsa_8021q_bridge_tx_fwd_offload_vid(int bridge_num);
48 
49 u16 dsa_tag_8021q_tx_vid(const struct dsa_port *dp);
50 
51 u16 dsa_tag_8021q_rx_vid(const struct dsa_port *dp);
52 
53 int dsa_8021q_rx_switch_id(u16 vid);
54 
55 int dsa_8021q_rx_source_port(u16 vid);
56 
57 bool vid_is_dsa_8021q_rxvlan(u16 vid);
58 
59 bool vid_is_dsa_8021q_txvlan(u16 vid);
60 
61 bool vid_is_dsa_8021q(u16 vid);
62 
63 #endif /* _NET_DSA_8021Q_H */
64