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 54 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 55 56 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 57 58 typedef int br_should_route_hook_t(struct sk_buff *skb); 59 extern br_should_route_hook_t __rcu *br_should_route_hook; 60 61 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 62 int br_multicast_list_adjacent(struct net_device *dev, 63 struct list_head *br_ip_list); 64 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 65 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 66 bool br_multicast_enabled(const struct net_device *dev); 67 bool br_multicast_router(const struct net_device *dev); 68 #else 69 static inline int br_multicast_list_adjacent(struct net_device *dev, 70 struct list_head *br_ip_list) 71 { 72 return 0; 73 } 74 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 75 int proto) 76 { 77 return false; 78 } 79 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 80 int proto) 81 { 82 return false; 83 } 84 static inline bool br_multicast_enabled(const struct net_device *dev) 85 { 86 return false; 87 } 88 static inline bool br_multicast_router(const struct net_device *dev) 89 { 90 return false; 91 } 92 #endif 93 94 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 95 bool br_vlan_enabled(const struct net_device *dev); 96 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 97 int br_vlan_get_info(const struct net_device *dev, u16 vid, 98 struct bridge_vlan_info *p_vinfo); 99 #else 100 static inline bool br_vlan_enabled(const struct net_device *dev) 101 { 102 return false; 103 } 104 105 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 106 { 107 return -1; 108 } 109 110 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 111 struct bridge_vlan_info *p_vinfo) 112 { 113 return -1; 114 } 115 #endif 116 117 #if IS_ENABLED(CONFIG_BRIDGE) 118 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 119 const unsigned char *addr, 120 __u16 vid); 121 #else 122 static inline struct net_device * 123 br_fdb_find_port(const struct net_device *br_dev, 124 const unsigned char *addr, 125 __u16 vid) 126 { 127 return NULL; 128 } 129 #endif 130 131 #endif 132