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