1 /* SPDX-License-Identifier: GPL-2.0 2 * Copyright (c) 2019, Vladimir Oltean <[email protected]> 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 dsa_8021q_context; 15 16 struct dsa_8021q_crosschip_link { 17 struct list_head list; 18 int port; 19 struct dsa_8021q_context *other_ctx; 20 int other_port; 21 refcount_t refcount; 22 }; 23 24 struct dsa_8021q_ops { 25 int (*vlan_add)(struct dsa_switch *ds, int port, u16 vid, u16 flags); 26 int (*vlan_del)(struct dsa_switch *ds, int port, u16 vid); 27 }; 28 29 struct dsa_8021q_context { 30 const struct dsa_8021q_ops *ops; 31 struct dsa_switch *ds; 32 struct list_head crosschip_links; 33 /* EtherType of RX VID, used for filtering on master interface */ 34 __be16 proto; 35 }; 36 37 struct dsa_8021q_context *dsa_tag_8021q_register(struct dsa_switch *ds, 38 const struct dsa_8021q_ops *ops, 39 __be16 proto); 40 41 void dsa_tag_8021q_unregister(struct dsa_8021q_context *ctx); 42 43 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled); 44 45 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port, 46 struct dsa_8021q_context *other_ctx, 47 int other_port); 48 49 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port, 50 struct dsa_8021q_context *other_ctx, 51 int other_port); 52 53 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev, 54 u16 tpid, u16 tci); 55 56 void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id); 57 58 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port); 59 60 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port); 61 62 int dsa_8021q_rx_switch_id(u16 vid); 63 64 int dsa_8021q_rx_source_port(u16 vid); 65 66 bool vid_is_dsa_8021q_rxvlan(u16 vid); 67 68 bool vid_is_dsa_8021q_txvlan(u16 vid); 69 70 bool vid_is_dsa_8021q(u16 vid); 71 72 #endif /* _NET_DSA_8021Q_H */ 73