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 #define BR_PROXYARP_WIFI BIT(10) 48 #define BR_MCAST_FLOOD BIT(11) 49 #define BR_MULTICAST_TO_UNICAST BIT(12) 50 #define BR_VLAN_TUNNEL BIT(13) 51 #define BR_BCAST_FLOOD BIT(14) 52 #define BR_NEIGH_SUPPRESS BIT(15) 53 #define BR_ISOLATED BIT(16) 54 55 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 56 57 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 58 59 typedef int br_should_route_hook_t(struct sk_buff *skb); 60 extern br_should_route_hook_t __rcu *br_should_route_hook; 61 62 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 63 int br_multicast_list_adjacent(struct net_device *dev, 64 struct list_head *br_ip_list); 65 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 66 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 67 bool br_multicast_enabled(const struct net_device *dev); 68 bool br_multicast_router(const struct net_device *dev); 69 #else 70 static inline int br_multicast_list_adjacent(struct net_device *dev, 71 struct list_head *br_ip_list) 72 { 73 return 0; 74 } 75 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 76 int proto) 77 { 78 return false; 79 } 80 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 81 int proto) 82 { 83 return false; 84 } 85 static inline bool br_multicast_enabled(const struct net_device *dev) 86 { 87 return false; 88 } 89 static inline bool br_multicast_router(const struct net_device *dev) 90 { 91 return false; 92 } 93 #endif 94 95 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 96 bool br_vlan_enabled(const struct net_device *dev); 97 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 98 int br_vlan_get_info(const struct net_device *dev, u16 vid, 99 struct bridge_vlan_info *p_vinfo); 100 #else 101 static inline bool br_vlan_enabled(const struct net_device *dev) 102 { 103 return false; 104 } 105 106 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 107 { 108 return -EINVAL; 109 } 110 111 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 112 struct bridge_vlan_info *p_vinfo) 113 { 114 return -EINVAL; 115 } 116 #endif 117 118 #if IS_ENABLED(CONFIG_BRIDGE) 119 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 120 const unsigned char *addr, 121 __u16 vid); 122 #else 123 static inline struct net_device * 124 br_fdb_find_port(const struct net_device *br_dev, 125 const unsigned char *addr, 126 __u16 vid) 127 { 128 return NULL; 129 } 130 #endif 131 132 #endif 133