1 /* 2 * Linux ethernet bridge 3 * 4 * Authors: 5 * Lennert Buytenhek <[email protected]> 6 * 7 * This program is free software; you can redistribute it and/or 8 * modify it under the terms of the GNU General Public License 9 * as published by the Free Software Foundation; either version 10 * 2 of the License, or (at your option) any later version. 11 */ 12 #ifndef _LINUX_IF_BRIDGE_H 13 #define _LINUX_IF_BRIDGE_H 14 15 16 #include <linux/netdevice.h> 17 #include <uapi/linux/if_bridge.h> 18 #include <linux/bitops.h> 19 20 struct br_ip { 21 union { 22 __be32 ip4; 23 #if IS_ENABLED(CONFIG_IPV6) 24 struct in6_addr ip6; 25 #endif 26 } u; 27 __be16 proto; 28 __u16 vid; 29 }; 30 31 struct br_ip_list { 32 struct list_head list; 33 struct br_ip addr; 34 }; 35 36 #define BR_HAIRPIN_MODE BIT(0) 37 #define BR_BPDU_GUARD BIT(1) 38 #define BR_ROOT_BLOCK BIT(2) 39 #define BR_MULTICAST_FAST_LEAVE BIT(3) 40 #define BR_ADMIN_COST BIT(4) 41 #define BR_LEARNING BIT(5) 42 #define BR_FLOOD BIT(6) 43 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) 44 #define BR_PROMISC BIT(7) 45 #define BR_PROXYARP BIT(8) 46 #define BR_LEARNING_SYNC BIT(9) 47 48 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 49 50 typedef int br_should_route_hook_t(struct sk_buff *skb); 51 extern br_should_route_hook_t __rcu *br_should_route_hook; 52 53 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 54 int br_multicast_list_adjacent(struct net_device *dev, 55 struct list_head *br_ip_list); 56 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 57 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 58 #else 59 static inline int br_multicast_list_adjacent(struct net_device *dev, 60 struct list_head *br_ip_list) 61 { 62 return 0; 63 } 64 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 65 int proto) 66 { 67 return false; 68 } 69 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 70 int proto) 71 { 72 return false; 73 } 74 #endif 75 76 #endif 77