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 51 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 52 53 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 54 55 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 56 int br_multicast_list_adjacent(struct net_device *dev, 57 struct list_head *br_ip_list); 58 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 59 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 60 bool br_multicast_enabled(const struct net_device *dev); 61 bool br_multicast_router(const struct net_device *dev); 62 #else 63 static inline int br_multicast_list_adjacent(struct net_device *dev, 64 struct list_head *br_ip_list) 65 { 66 return 0; 67 } 68 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 69 int proto) 70 { 71 return false; 72 } 73 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 74 int proto) 75 { 76 return false; 77 } 78 static inline bool br_multicast_enabled(const struct net_device *dev) 79 { 80 return false; 81 } 82 static inline bool br_multicast_router(const struct net_device *dev) 83 { 84 return false; 85 } 86 #endif 87 88 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 89 bool br_vlan_enabled(const struct net_device *dev); 90 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 91 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 92 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 93 int br_vlan_get_info(const struct net_device *dev, u16 vid, 94 struct bridge_vlan_info *p_vinfo); 95 #else 96 static inline bool br_vlan_enabled(const struct net_device *dev) 97 { 98 return false; 99 } 100 101 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 102 { 103 return -EINVAL; 104 } 105 106 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 107 { 108 return -EINVAL; 109 } 110 111 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 112 { 113 return -EINVAL; 114 } 115 116 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 117 struct bridge_vlan_info *p_vinfo) 118 { 119 return -EINVAL; 120 } 121 #endif 122 123 #if IS_ENABLED(CONFIG_BRIDGE) 124 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 125 const unsigned char *addr, 126 __u16 vid); 127 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 128 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 129 #else 130 static inline struct net_device * 131 br_fdb_find_port(const struct net_device *br_dev, 132 const unsigned char *addr, 133 __u16 vid) 134 { 135 return NULL; 136 } 137 138 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 139 { 140 } 141 142 static inline bool 143 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 144 { 145 return false; 146 } 147 #endif 148 149 #endif 150