/* * Linux ethernet bridge * * Authors: * Lennert Buytenhek * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation; either version * 2 of the License, or (at your option) any later version. */ #ifndef _LINUX_IF_BRIDGE_H #define _LINUX_IF_BRIDGE_H #include #include #include struct br_ip { union { __be32 ip4; #if IS_ENABLED(CONFIG_IPV6) struct in6_addr ip6; #endif } u; __be16 proto; __u16 vid; }; struct br_ip_list { struct list_head list; struct br_ip addr; }; #define BR_HAIRPIN_MODE BIT(0) #define BR_BPDU_GUARD BIT(1) #define BR_ROOT_BLOCK BIT(2) #define BR_MULTICAST_FAST_LEAVE BIT(3) #define BR_ADMIN_COST BIT(4) #define BR_LEARNING BIT(5) #define BR_FLOOD BIT(6) #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) #define BR_PROMISC BIT(7) #define BR_PROXYARP BIT(8) #define BR_LEARNING_SYNC BIT(9) #define BR_PROXYARP_WIFI BIT(10) #define BR_MCAST_FLOOD BIT(11) #define BR_MULTICAST_TO_UNICAST BIT(12) #define BR_ISOLATE_MODE BIT(13) #define BR_BCAST_FLOOD BIT(14) #define BR_DEFAULT_AGEING_TIME (300 * HZ) struct net_bridge_port; extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); extern struct net_device *br_port_dev_get(struct net_device *dev, unsigned char *addr, struct sk_buff *skb, unsigned int cookie); extern void br_refresh_fdb_entry(struct net_device *dev, const char *addr); extern void br_dev_update_stats(struct net_device *dev, struct rtnl_link_stats64 *nlstats); extern struct net_bridge_fdb_entry *br_fdb_has_entry(struct net_device *dev, const char *addr, __u16 vid); extern void br_fdb_update_register_notify(struct notifier_block *nb); extern void br_fdb_update_unregister_notify(struct notifier_block *nb); typedef int br_should_route_hook_t(struct sk_buff *skb); extern br_should_route_hook_t __rcu *br_should_route_hook; extern bool br_is_hairpin_enabled(struct net_device *dev); #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list); bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); #else static inline int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list) { return 0; } static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto) { return false; } static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) { return false; } #endif typedef struct net_bridge_port *br_port_dev_get_hook_t(struct net_device *dev, struct sk_buff *skb, unsigned char *addr, unsigned int cookie); extern br_port_dev_get_hook_t __rcu *br_port_dev_get_hook; typedef void (br_notify_hook_t)(int group, int event, const void *ptr); extern br_notify_hook_t __rcu *br_notify_hook; typedef int (br_multicast_handle_hook_t)(const struct net_bridge_port *src, struct sk_buff *skb); extern br_multicast_handle_hook_t __rcu *br_multicast_handle_hook; #define BR_FDB_EVENT_ADD 0x01 #define BR_FDB_EVENT_DEL 0x02 struct br_fdb_event { unsigned char addr[6]; unsigned char is_local; struct net_device *dev; struct net_bridge *br; struct net_device *orig_dev; }; extern void br_fdb_register_notify(struct notifier_block *nb); extern void br_fdb_unregister_notify(struct notifier_block *nb); extern struct net_device *br_fdb_bridge_dev_get_and_hold(struct net_bridge *br); extern int br_fdb_delete_by_netdev(struct net_device *dev, const unsigned char *addr, u16 vid); extern int br_fdb_add_or_refresh_by_netdev(struct net_device *dev, const unsigned char *addr, u16 vid, u16 state); typedef struct net_bridge_port *br_get_dst_hook_t( const struct net_bridge_port *src, struct sk_buff **skb); extern br_get_dst_hook_t __rcu *br_get_dst_hook; typedef void (br_notify_hook_t)(int group, int event, const void *ptr); extern br_notify_hook_t __rcu *br_notify_hook; #endif