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_rxvlan(u16 vid); 68 69 bool vid_is_dsa_8021q_txvlan(u16 vid); 70 71 bool vid_is_dsa_8021q(u16 vid); 72 73 #else 74 75 int dsa_8021q_setup(struct dsa_8021q_context *ctx, bool enabled) 76 { 77 return 0; 78 } 79 80 int dsa_8021q_crosschip_bridge_join(struct dsa_8021q_context *ctx, int port, 81 struct dsa_8021q_context *other_ctx, 82 int other_port) 83 { 84 return 0; 85 } 86 87 int dsa_8021q_crosschip_bridge_leave(struct dsa_8021q_context *ctx, int port, 88 struct dsa_8021q_context *other_ctx, 89 int other_port) 90 { 91 return 0; 92 } 93 94 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev, 95 u16 tpid, u16 tci) 96 { 97 return NULL; 98 } 99 100 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port) 101 { 102 return 0; 103 } 104 105 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port) 106 { 107 return 0; 108 } 109 110 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan) 111 { 112 return 0; 113 } 114 115 int dsa_8021q_rx_switch_id(u16 vid) 116 { 117 return 0; 118 } 119 120 int dsa_8021q_rx_source_port(u16 vid) 121 { 122 return 0; 123 } 124 125 u16 dsa_8021q_rx_subvlan(u16 vid) 126 { 127 return 0; 128 } 129 130 bool vid_is_dsa_8021q_rxvlan(u16 vid) 131 { 132 return false; 133 } 134 135 bool vid_is_dsa_8021q_txvlan(u16 vid) 136 { 137 return false; 138 } 139 140 bool vid_is_dsa_8021q(u16 vid) 141 { 142 return false; 143 } 144 145 #endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */ 146 147 #endif /* _NET_DSA_8021Q_H */ 148