include/linux/dsa/8021q.h

   1 /* SPDX-License-Identifier: GPL-2.0
   2  * Copyright (c) 2019, Vladimir Oltean <olteanv@gmail.com>
   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
  16 struct dsa_8021q_crosschip_link {
  17         struct list_head list;
  18         int port;
  19         struct dsa_switch *other_ds;
  20         int other_port;
  21         refcount_t refcount;
  22 };
  23
  24 #define DSA_8021Q_N_SUBVLAN                     8
  25
  26 #if IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q)
  27
  28 int dsa_8021q_setup(struct dsa_switch *ds, bool enabled);
  29
  30 int dsa_8021q_crosschip_bridge_join(struct dsa_switch *ds, int port,
  31                                     struct dsa_switch *other_ds,
  32                                     int other_port,
  33                                     struct list_head *crosschip_links);
  34
  35 int dsa_8021q_crosschip_bridge_leave(struct dsa_switch *ds, int port,
  36                                      struct dsa_switch *other_ds,
  37                                      int other_port,
  38                                      struct list_head *crosschip_links);
  39
  40 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
  41                                u16 tpid, u16 tci);
  42
  43 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port);
  44
  45 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port);
  46
  47 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan);
  48
  49 int dsa_8021q_rx_switch_id(u16 vid);
  50
  51 int dsa_8021q_rx_source_port(u16 vid);
  52
  53 u16 dsa_8021q_rx_subvlan(u16 vid);
  54
  55 bool vid_is_dsa_8021q(u16 vid);
  56
  57 #else
  58
  59 int dsa_8021q_setup(struct dsa_switch *ds, bool enabled)
  60 {
  61         return 0;
  62 }
  63
  64 int dsa_8021q_crosschip_bridge_join(struct dsa_switch *ds, int port,
  65                                     struct dsa_switch *other_ds,
  66                                     int other_port,
  67                                     struct list_head *crosschip_links)
  68 {
  69         return 0;
  70 }
  71
  72 int dsa_8021q_crosschip_bridge_leave(struct dsa_switch *ds, int port,
  73                                      struct dsa_switch *other_ds,
  74                                      int other_port,
  75                                      struct list_head *crosschip_links)
  76 {
  77         return 0;
  78 }
  79
  80 struct sk_buff *dsa_8021q_xmit(struct sk_buff *skb, struct net_device *netdev,
  81                                u16 tpid, u16 tci)
  82 {
  83         return NULL;
  84 }
  85
  86 u16 dsa_8021q_tx_vid(struct dsa_switch *ds, int port)
  87 {
  88         return 0;
  89 }
  90
  91 u16 dsa_8021q_rx_vid(struct dsa_switch *ds, int port)
  92 {
  93         return 0;
  94 }
  95
  96 u16 dsa_8021q_rx_vid_subvlan(struct dsa_switch *ds, int port, u16 subvlan)
  97 {
  98         return 0;
  99 }
 100
 101 int dsa_8021q_rx_switch_id(u16 vid)
 102 {
 103         return 0;
 104 }
 105
 106 int dsa_8021q_rx_source_port(u16 vid)
 107 {
 108         return 0;
 109 }
 110
 111 u16 dsa_8021q_rx_subvlan(u16 vid)
 112 {
 113         return 0;
 114 }
 115
 116 bool vid_is_dsa_8021q(u16 vid)
 117 {
 118         return false;
 119 }
 120
 121 #endif /* IS_ENABLED(CONFIG_NET_DSA_TAG_8021Q) */
 122
 123 #endif /* _NET_DSA_8021Q_H */