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 #define BR_MRP_LOST_IN_CONT BIT(19) 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 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 59 int br_multicast_list_adjacent(struct net_device *dev, 60 struct list_head *br_ip_list); 61 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 62 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 63 bool br_multicast_enabled(const struct net_device *dev); 64 bool br_multicast_router(const struct net_device *dev); 65 #else 66 static inline int br_multicast_list_adjacent(struct net_device *dev, 67 struct list_head *br_ip_list) 68 { 69 return 0; 70 } 71 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 72 int proto) 73 { 74 return false; 75 } 76 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 77 int proto) 78 { 79 return false; 80 } 81 static inline bool br_multicast_enabled(const struct net_device *dev) 82 { 83 return false; 84 } 85 static inline bool br_multicast_router(const struct net_device *dev) 86 { 87 return false; 88 } 89 #endif 90 91 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 92 bool br_vlan_enabled(const struct net_device *dev); 93 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 94 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 95 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 96 int br_vlan_get_info(const struct net_device *dev, u16 vid, 97 struct bridge_vlan_info *p_vinfo); 98 #else 99 static inline bool br_vlan_enabled(const struct net_device *dev) 100 { 101 return false; 102 } 103 104 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 105 { 106 return -EINVAL; 107 } 108 109 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 110 { 111 return -EINVAL; 112 } 113 114 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 115 { 116 return -EINVAL; 117 } 118 119 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 120 struct bridge_vlan_info *p_vinfo) 121 { 122 return -EINVAL; 123 } 124 #endif 125 126 #if IS_ENABLED(CONFIG_BRIDGE) 127 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 128 const unsigned char *addr, 129 __u16 vid); 130 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 131 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 132 #else 133 static inline struct net_device * 134 br_fdb_find_port(const struct net_device *br_dev, 135 const unsigned char *addr, 136 __u16 vid) 137 { 138 return NULL; 139 } 140 141 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 142 { 143 } 144 145 static inline bool 146 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 147 { 148 return false; 149 } 150 #endif 151 152 #endif 153