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 }; 35 36 #define DSA_8021Q_N_SUBVLAN 8 37 38 #if IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) 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 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port); 54 55 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port); 56 57 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan); 58 59 int dsa_8021q_rx_switch_id(u16 vid); 60 61 int dsa_8021q_rx_source_port(u16 vid); 62 63 u16 dsa_8021q_rx_subvlan(u16 vid); 64 65 bool vid_is_dsa_8021q(u16 vid); 66 67 #else 68 69 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled) 70 { 71 return 0; 72 } 73 74 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port, 75 struct dsa_8021q_context *other_ctx, 76 int other_port) 77 { 78 return 0; 79 } 80 81 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port, 82 struct dsa_8021q_context *other_ctx, 83 int other_port) 84 { 85 return 0; 86 } 87 88 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev, 89 u16 tpid, u16 tci) 90 { 91 return NULL; 92 } 93 94 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port) 95 { 96 return 0; 97 } 98 99 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port) 100 { 101 return 0; 102 } 103 104 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan) 105 { 106 return 0; 107 } 108 109 int dsa_8021q_rx_switch_id(u16 vid) 110 { 111 return 0; 112 } 113 114 int dsa_8021q_rx_source_port(u16 vid) 115 { 116 return 0; 117 } 118 119 u16 dsa_8021q_rx_subvlan(u16 vid) 120 { 121 return 0; 122 } 123 124 bool vid_is_dsa_8021q(u16 vid) 125 { 126 return false; 127 } 128 129 #endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */ 130 131 #endif /* _NET_DSA_8021Q_H */ 132