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 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 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled); 41 42 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port, 43 struct dsa_8021q_context *other_ctx, 44 int other_port); 45 46 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port, 47 struct dsa_8021q_context *other_ctx, 48 int other_port); 49 50 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev, 51 u16 tpid, u16 tci); 52 53 void dsa_8021q_rcv(struct sk_buff *skb, int *source_port, int *switch_id, 54 int *subvlan); 55 56 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port); 57 58 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port); 59 60 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan); 61 62 int dsa_8021q_rx_switch_id(u16 vid); 63 64 int dsa_8021q_rx_source_port(u16 vid); 65 66 u16 dsa_8021q_rx_subvlan(u16 vid); 67 68 bool vid_is_dsa_8021q_rxvlan(u16 vid); 69 70 bool vid_is_dsa_8021q_txvlan(u16 vid); 71 72 bool vid_is_dsa_8021q(u16 vid); 73 74 #endif /* _NET_DSA_8021Q_H */ 75