1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Linux ethernet bridge
6 * Lennert Buytenhek <buytenh@gnu.org>
8 #ifndef _LINUX_IF_BRIDGE_H
9 #define _LINUX_IF_BRIDGE_H
12 #include <linux/netdevice.h>
13 #include <uapi/linux/if_bridge.h>
14 #include <linux/bitops.h>
19 #if IS_ENABLED(CONFIG_IPV6)
25 #if IS_ENABLED(CONFIG_IPV6)
28 unsigned char mac_addr[ETH_ALEN];
35 struct list_head list;
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)
62 #define BR_DEFAULT_AGEING_TIME (300 * HZ)
64 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *));
66 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING)
67 int br_multicast_list_adjacent(struct net_device *dev,
68 struct list_head *br_ip_list);
69 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto);
70 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto);
71 bool br_multicast_has_router_adjacent(struct net_device *dev, int proto);
72 bool br_multicast_enabled(const struct net_device *dev);
73 bool br_multicast_router(const struct net_device *dev);
75 static inline int br_multicast_list_adjacent(struct net_device *dev,
76 struct list_head *br_ip_list)
80 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev,
85 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev,
91 static inline bool br_multicast_has_router_adjacent(struct net_device *dev,
97 static inline bool br_multicast_enabled(const struct net_device *dev)
101 static inline bool br_multicast_router(const struct net_device *dev)
107 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING)
108 bool br_vlan_enabled(const struct net_device *dev);
109 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid);
110 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid);
111 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto);
112 int br_vlan_get_info(const struct net_device *dev, u16 vid,
113 struct bridge_vlan_info *p_vinfo);
114 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
115 struct bridge_vlan_info *p_vinfo);
117 static inline bool br_vlan_enabled(const struct net_device *dev)
122 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid)
127 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto)
132 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid)
137 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid,
138 struct bridge_vlan_info *p_vinfo)
143 static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid,
144 struct bridge_vlan_info *p_vinfo)
150 #if IS_ENABLED(CONFIG_BRIDGE)
151 struct net_device *br_fdb_find_port(const struct net_device *br_dev,
152 const unsigned char *addr,
154 void br_fdb_clear_offload(const struct net_device *dev, u16 vid);
155 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag);
156 u8 br_port_get_stp_state(const struct net_device *dev);
157 clock_t br_get_ageing_time(const struct net_device *br_dev);
159 static inline struct net_device *
160 br_fdb_find_port(const struct net_device *br_dev,
161 const unsigned char *addr,
167 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid)
172 br_port_flag_is_set(const struct net_device *dev, unsigned long flag)
177 static inline u8 br_port_get_stp_state(const struct net_device *dev)
179 return BR_STATE_DISABLED;
182 static inline clock_t br_get_ageing_time(const struct net_device *br_dev)
188 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_NET_SWITCHDEV)
190 int switchdev_bridge_port_offload(struct net_device *brport_dev,
191 struct net_device *dev, const void *ctx,
192 struct notifier_block *atomic_nb,
193 struct notifier_block *blocking_nb,
195 struct netlink_ext_ack *extack);
196 void switchdev_bridge_port_unoffload(struct net_device *brport_dev,
198 struct notifier_block *atomic_nb,
199 struct notifier_block *blocking_nb);
204 switchdev_bridge_port_offload(struct net_device *brport_dev,
205 struct net_device *dev, const void *ctx,
206 struct notifier_block *atomic_nb,
207 struct notifier_block *blocking_nb,
209 struct netlink_ext_ack *extack)
215 switchdev_bridge_port_unoffload(struct net_device *brport_dev,
217 struct notifier_block *atomic_nb,
218 struct notifier_block *blocking_nb)