include/linux/if_bridge.h

   1 /* SPDX-License-Identifier: GPL-2.0-or-later */
   2 /*
   3  *      Linux ethernet bridge
   4  *
   5  *      Authors:
   6  *      Lennert Buytenhek               <buytenh@gnu.org>
   7  */
   8 #ifndef _LINUX_IF_BRIDGE_H
   9 #define _LINUX_IF_BRIDGE_H
  10
  11
  12 #include <linux/netdevice.h>
  13 #include <uapi/linux/if_bridge.h>
  14 #include <linux/bitops.h>
  15
  16 struct br_ip {
  17         union {
  18                 __be32  ip4;
  19 #if IS_ENABLED(CONFIG_IPV6)
  20                 struct in6_addr ip6;
  21 #endif
  22         } src;
  23         union {
  24                 __be32  ip4;
  25 #if IS_ENABLED(CONFIG_IPV6)
  26                 struct in6_addr ip6;
  27 #endif
  28                 unsigned char   mac_addr[ETH_ALEN];
  29         } dst;
  30         __be16          proto;
  31         __u16           vid;
  32 };
  33
  34 struct br_ip_list {
  35         struct list_head list;
  36         struct br_ip addr;
  37 };
  38
  39 #define BR_HAIRPIN_MODE         BIT(0)
  40 #define BR_BPDU_GUARD           BIT(1)
  41 #define BR_ROOT_BLOCK           BIT(2)
  42 #define BR_MULTICAST_FAST_LEAVE BIT(3)
  43 #define BR_ADMIN_COST           BIT(4)
  44 #define BR_LEARNING             BIT(5)
  45 #define BR_FLOOD                BIT(6)
  46 #define BR_AUTO_MASK            (BR_FLOOD | BR_LEARNING)
  47 #define BR_PROMISC              BIT(7)
  48 #define BR_PROXYARP             BIT(8)
  49 #define BR_LEARNING_SYNC        BIT(9)
  50 #define BR_PROXYARP_WIFI        BIT(10)
  51 #define BR_MCAST_FLOOD          BIT(11)
  52 #define BR_MULTICAST_TO_UNICAST BIT(12)
  53 #define BR_VLAN_TUNNEL          BIT(13)
  54 #define BR_BCAST_FLOOD          BIT(14)
  55 #define BR_NEIGH_SUPPRESS       BIT(15)
  56 #define BR_ISOLATED             BIT(16)
  57 #define BR_MRP_AWARE            BIT(17)
  58 #define BR_MRP_LOST_CONT        BIT(18)
  59 #define BR_MRP_LOST_IN_CONT     BIT(19)
  60 #define BR_TX_FWD_OFFLOAD       BIT(20)
  61 #define BR_PORT_LOCKED          BIT(21)
  62 #define BR_PORT_MAB             BIT(22)
  63 #define BR_NEIGH_VLAN_SUPPRESS  BIT(23)
  64
  65 #define BR_DEFAULT_AGEING_TIME  (300 * HZ)
  66
  67 struct net_bridge;
  68 void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br,
  69                              unsigned int cmd, struct ifreq *ifr,
  70                              void __user *uarg));
  71 int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd,
  72                   struct ifreq *ifr, void __user *uarg);
  73
  74 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
  75 int br_multicast_list_adjacent(struct net_device *dev,
  76                                struct list_head *br_ip_list);
  77 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
  78 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
  79 bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
  80 bool br_multicast_enabled(const struct net_device *dev);
  81 bool br_multicast_router(const struct net_device *dev);
  82 #else
  83 static inline int br_multicast_list_adjacent(struct net_device *dev,
  84                                              struct list_head *br_ip_list)
  85 {
  86         return 0;
  87 }
  88 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  89                                                      int proto)
  90 {
  91         return false;
  92 }
  93 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  94                                                      int proto)
  95 {
  96         return false;
  97 }
  98
  99 static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
 100                                                     int proto)
 101 {
 102         return true;
 103 }
 104
 105 static inline bool br_multicast_enabled(const struct net_device *dev)
 106 {
 107         return false;
 108 }
 109 static inline bool br_multicast_router(const struct net_device *dev)
 110 {
 111         return false;
 112 }
 113 #endif
 114
 115 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
 116 bool br_vlan_enabled(const struct net_device *dev);
 117 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
 118 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
 119 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
 120 int br_vlan_get_info(const struct net_device *dev, u16 vid,
 121                      struct bridge_vlan_info *p_vinfo);
 122 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 123                          struct bridge_vlan_info *p_vinfo);
 124 bool br_mst_enabled(const struct net_device *dev);
 125 int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids);
 126 int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state);
 127 #else
 128 static inline bool br_vlan_enabled(const struct net_device *dev)
 129 {
 130         return false;
 131 }
 132
 133 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
 134 {
 135         return -EINVAL;
 136 }
 137
 138 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
 139 {
 140         return -EINVAL;
 141 }
 142
 143 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
 144 {
 145         return -EINVAL;
 146 }
 147
 148 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
 149                                    struct bridge_vlan_info *p_vinfo)
 150 {
 151         return -EINVAL;
 152 }
 153
 154 static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 155                                        struct bridge_vlan_info *p_vinfo)
 156 {
 157         return -EINVAL;
 158 }
 159
 160 static inline bool br_mst_enabled(const struct net_device *dev)
 161 {
 162         return false;
 163 }
 164
 165 static inline int br_mst_get_info(const struct net_device *dev, u16 msti,
 166                                   unsigned long *vids)
 167 {
 168         return -EINVAL;
 169 }
 170 static inline int br_mst_get_state(const struct net_device *dev, u16 msti,
 171                                    u8 *state)
 172 {
 173         return -EINVAL;
 174 }
 175 #endif
 176
 177 #if IS_ENABLED(CONFIG_BRIDGE)
 178 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
 179                                     const unsigned char *addr,
 180                                     __u16 vid);
 181 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
 182 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
 183 u8 br_port_get_stp_state(const struct net_device *dev);
 184 clock_t br_get_ageing_time(const struct net_device *br_dev);
 185 #else
 186 static inline struct net_device *
 187 br_fdb_find_port(const struct net_device *br_dev,
 188                  const unsigned char *addr,
 189                  __u16 vid)
 190 {
 191         return NULL;
 192 }
 193
 194 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
 195 {
 196 }
 197
 198 static inline bool
 199 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
 200 {
 201         return false;
 202 }
 203
 204 static inline u8 br_port_get_stp_state(const struct net_device *dev)
 205 {
 206         return BR_STATE_DISABLED;
 207 }
 208
 209 static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
 210 {
 211         return 0;
 212 }
 213 #endif
 214
 215 #endif