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 #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 71 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled) 72 { 73 return 0; 74 } 75 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 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 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 96 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port) 97 { 98 return 0; 99 } 100 101 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port) 102 { 103 return 0; 104 } 105 106 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan) 107 { 108 return 0; 109 } 110 111 int dsa_8021q_rx_switch_id(u16 vid) 112 { 113 return 0; 114 } 115 116 int dsa_8021q_rx_source_port(u16 vid) 117 { 118 return 0; 119 } 120 121 u16 dsa_8021q_rx_subvlan(u16 vid) 122 { 123 return 0; 124 } 125 126 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