1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <[email protected]> 7 */ 8 #ifndef _LINUX_IF_BRIDGE_H 9 #define _LINUX_IF_BRIDGE_H 10 11 12 #include <linux/netdevice.h> 13 #include <uapi/linux/if_bridge.h> 14 #include <linux/bitops.h> 15 16 struct br_ip { 17 union { 18 __be32 ip4; 19 #if IS_ENABLED(CONFIG_IPV6) 20 struct in6_addr ip6; 21 #endif 22 } src; 23 union { 24 __be32 ip4; 25 #if IS_ENABLED(CONFIG_IPV6) 26 struct in6_addr ip6; 27 #endif 28 } dst; 29 __be16 proto; 30 __u16 vid; 31 }; 32 33 struct br_ip_list { 34 struct list_head list; 35 struct br_ip addr; 36 }; 37 38 #define BR_HAIRPIN_MODE BIT(0) 39 #define BR_BPDU_GUARD BIT(1) 40 #define BR_ROOT_BLOCK BIT(2) 41 #define BR_MULTICAST_FAST_LEAVE BIT(3) 42 #define BR_ADMIN_COST BIT(4) 43 #define BR_LEARNING BIT(5) 44 #define BR_FLOOD BIT(6) 45 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) 46 #define BR_PROMISC BIT(7) 47 #define BR_PROXYARP BIT(8) 48 #define BR_LEARNING_SYNC BIT(9) 49 #define BR_PROXYARP_WIFI BIT(10) 50 #define BR_MCAST_FLOOD BIT(11) 51 #define BR_MULTICAST_TO_UNICAST BIT(12) 52 #define BR_VLAN_TUNNEL BIT(13) 53 #define BR_BCAST_FLOOD BIT(14) 54 #define BR_NEIGH_SUPPRESS BIT(15) 55 #define BR_ISOLATED BIT(16) 56 #define BR_MRP_AWARE BIT(17) 57 #define BR_MRP_LOST_CONT BIT(18) 58 #define BR_MRP_LOST_IN_CONT BIT(19) 59 60 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 61 62 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 63 64 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 65 int br_multicast_list_adjacent(struct net_device *dev, 66 struct list_head *br_ip_list); 67 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 68 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 69 bool br_multicast_enabled(const struct net_device *dev); 70 bool br_multicast_router(const struct net_device *dev); 71 #else 72 static inline int br_multicast_list_adjacent(struct net_device *dev, 73 struct list_head *br_ip_list) 74 { 75 return 0; 76 } 77 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 78 int proto) 79 { 80 return false; 81 } 82 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 83 int proto) 84 { 85 return false; 86 } 87 static inline bool br_multicast_enabled(const struct net_device *dev) 88 { 89 return false; 90 } 91 static inline bool br_multicast_router(const struct net_device *dev) 92 { 93 return false; 94 } 95 #endif 96 97 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 98 bool br_vlan_enabled(const struct net_device *dev); 99 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 100 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 101 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 102 int br_vlan_get_info(const struct net_device *dev, u16 vid, 103 struct bridge_vlan_info *p_vinfo); 104 #else 105 static inline bool br_vlan_enabled(const struct net_device *dev) 106 { 107 return false; 108 } 109 110 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 111 { 112 return -EINVAL; 113 } 114 115 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 116 { 117 return -EINVAL; 118 } 119 120 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 121 { 122 return -EINVAL; 123 } 124 125 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 126 struct bridge_vlan_info *p_vinfo) 127 { 128 return -EINVAL; 129 } 130 #endif 131 132 #if IS_ENABLED(CONFIG_BRIDGE) 133 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 134 const unsigned char *addr, 135 __u16 vid); 136 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 137 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 138 #else 139 static inline struct net_device * 140 br_fdb_find_port(const struct net_device *br_dev, 141 const unsigned char *addr, 142 __u16 vid) 143 { 144 return NULL; 145 } 146 147 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 148 { 149 } 150 151 static inline bool 152 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 153 { 154 return false; 155 } 156 #endif 157 158 #endif 159