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
  62 #define BR_DEFAULT_AGEING_TIME  (300 * HZ)
  63
  64 struct net_bridge;
  65 void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br,
  66                              unsigned int cmd, struct ifreq *ifr,
  67                              void __user *uarg));
  68 int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd,
  69                   struct ifreq *ifr, void __user *uarg);
  70
  71 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
  72 int br_multicast_list_adjacent(struct net_device *dev,
  73                                struct list_head *br_ip_list);
  74 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
  75 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
  76 bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
  77 bool br_multicast_enabled(const struct net_device *dev);
  78 bool br_multicast_router(const struct net_device *dev);
  79 #else
  80 static inline int br_multicast_list_adjacent(struct net_device *dev,
  81                                              struct list_head *br_ip_list)
  82 {
  83         return 0;
  84 }
  85 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
  86                                                      int proto)
  87 {
  88         return false;
  89 }
  90 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
  91                                                      int proto)
  92 {
  93         return false;
  94 }
  95
  96 static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
  97                                                     int proto)
  98 {
  99         return true;
 100 }
 101
 102 static inline bool br_multicast_enabled(const struct net_device *dev)
 103 {
 104         return false;
 105 }
 106 static inline bool br_multicast_router(const struct net_device *dev)
 107 {
 108         return false;
 109 }
 110 #endif
 111
 112 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
 113 bool br_vlan_enabled(const struct net_device *dev);
 114 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
 115 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
 116 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
 117 int br_vlan_get_info(const struct net_device *dev, u16 vid,
 118                      struct bridge_vlan_info *p_vinfo);
 119 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 120                          struct bridge_vlan_info *p_vinfo);
 121 #else
 122 static inline bool br_vlan_enabled(const struct net_device *dev)
 123 {
 124         return false;
 125 }
 126
 127 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
 128 {
 129         return -EINVAL;
 130 }
 131
 132 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
 133 {
 134         return -EINVAL;
 135 }
 136
 137 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
 138 {
 139         return -EINVAL;
 140 }
 141
 142 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
 143                                    struct bridge_vlan_info *p_vinfo)
 144 {
 145         return -EINVAL;
 146 }
 147
 148 static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
 149                                        struct bridge_vlan_info *p_vinfo)
 150 {
 151         return -EINVAL;
 152 }
 153 #endif
 154
 155 #if IS_ENABLED(CONFIG_BRIDGE)
 156 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
 157                                     const unsigned char *addr,
 158                                     __u16 vid);
 159 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
 160 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
 161 u8 br_port_get_stp_state(const struct net_device *dev);
 162 clock_t br_get_ageing_time(const struct net_device *br_dev);
 163 #else
 164 static inline struct net_device *
 165 br_fdb_find_port(const struct net_device *br_dev,
 166                  const unsigned char *addr,
 167                  __u16 vid)
 168 {
 169         return NULL;
 170 }
 171
 172 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
 173 {
 174 }
 175
 176 static inline bool
 177 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
 178 {
 179         return false;
 180 }
 181
 182 static inline u8 br_port_get_stp_state(const struct net_device *dev)
 183 {
 184         return BR_STATE_DISABLED;
 185 }
 186
 187 static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
 188 {
 189         return 0;
 190 }
 191 #endif
 192
 193 #endif