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 sk_buff;
13 struct net_device;
14 struct packet_type;
15 struct dsa_8021q_context;
16
17 struct dsa_8021q_crosschip_link {
18 struct list_head list;
19 int port;
20 struct dsa_8021q_context *other_ctx;
21 int other_port;
22 refcount_t refcount;
23 };
24
25 struct dsa_8021q_ops {
26 int (*vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags);
27 int (*vlan_del)(struct dsa_switch *ds, int port, u16 vid);
28 };
29
30 struct dsa_8021q_context {
31 const struct dsa_8021q_ops *ops;
32 struct dsa_switch *ds;
33 struct list_head crosschip_links;
34 /* EtherType of RX VID, used for filtering on master interface */
35 __be16 proto;
36 };
37
38 #define DSA_8021Q_N_SUBVLAN 8
39
40 #if IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q)
41
42 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled);
43
44 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port,
45 struct dsa_8021q_context *other_ctx,
46 int other_port);
47
48 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port,
49 struct dsa_8021q_context *other_ctx,
50 int other_port);
51
52 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
53 u16 tpid, u16 tci);
54
55 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port);
56
57 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port);
58
59 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan);
60
61 int dsa_8021q_rx_switch_id(u16 vid);
62
63 int dsa_8021q_rx_source_port(u16 vid);
64
65 u16 dsa_8021q_rx_subvlan(u16 vid);
66
67 bool vid_is_dsa_8021q(u16 vid);
68
69 #else
70
dsa_8021q_setup(struct dsa_8021q_context * ctx,bool enabled)71 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled)
72 {
73 return 0;
74 }
75
dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context * ctx,int port,struct dsa_8021q_context * other_ctx,int other_port)76 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port,
77 struct dsa_8021q_context *other_ctx,
78 int other_port)
79 {
80 return 0;
81 }
82
dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context * ctx,int port,struct dsa_8021q_context * other_ctx,int other_port)83 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port,
84 struct dsa_8021q_context *other_ctx,
85 int other_port)
86 {
87 return 0;
88 }
89
dsa_8021q_xmit(struct sk_buff * skb,struct net_device * netdev,u16 tpid,u16 tci)90 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
91 u16 tpid, u16 tci)
92 {
93 return NULL;
94 }
95
dsa_8021q_tx_vid(struct dsa_switch * ds,int port)96 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port)
97 {
98 return 0;
99 }
100
dsa_8021q_rx_vid(struct dsa_switch * ds,int port)101 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port)
102 {
103 return 0;
104 }
105
dsa_8021q_rx_vid_subvlan(struct dsa_switch * ds,int port,u16 subvlan)106 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan)
107 {
108 return 0;
109 }
110
dsa_8021q_rx_switch_id(u16 vid)111 int dsa_8021q_rx_switch_id(u16 vid)
112 {
113 return 0;
114 }
115
dsa_8021q_rx_source_port(u16 vid)116 int dsa_8021q_rx_source_port(u16 vid)
117 {
118 return 0;
119 }
120
dsa_8021q_rx_subvlan(u16 vid)121 u16 dsa_8021q_rx_subvlan(u16 vid)
122 {
123 return 0;
124 }
125
vid_is_dsa_8021q(u16 vid)126 bool vid_is_dsa_8021q(u16 vid)
127 {
128 return false;
129 }
130
131 #endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */
132
133 #endif /* _NET_DSA_8021Q_H */
134