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 unsigned char mac_addr[ETH_ALEN]; 29 } dst; 30 __be16 proto; 31 __u16 vid; 32 }; 33 34 struct br_ip_list { 35 struct list_head list; 36 struct br_ip addr; 37 }; 38 39 #define BR_HAIRPIN_MODE BIT(0) 40 #define BR_BPDU_GUARD BIT(1) 41 #define BR_ROOT_BLOCK BIT(2) 42 #define BR_MULTICAST_FAST_LEAVE BIT(3) 43 #define BR_ADMIN_COST BIT(4) 44 #define BR_LEARNING BIT(5) 45 #define BR_FLOOD BIT(6) 46 #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) 47 #define BR_PROMISC BIT(7) 48 #define BR_PROXYARP BIT(8) 49 #define BR_LEARNING_SYNC BIT(9) 50 #define BR_PROXYARP_WIFI BIT(10) 51 #define BR_MCAST_FLOOD BIT(11) 52 #define BR_MULTICAST_TO_UNICAST BIT(12) 53 #define BR_VLAN_TUNNEL BIT(13) 54 #define BR_BCAST_FLOOD BIT(14) 55 #define BR_NEIGH_SUPPRESS BIT(15) 56 #define BR_ISOLATED BIT(16) 57 #define BR_MRP_AWARE BIT(17) 58 #define BR_MRP_LOST_CONT BIT(18) 59 #define BR_MRP_LOST_IN_CONT BIT(19) 60 61 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 62 63 extern void brioctl_set(int (*ioctl_hook)(struct net *, unsigned int, void __user *)); 64 65 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 66 int br_multicast_list_adjacent(struct net_device *dev, 67 struct list_head *br_ip_list); 68 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 69 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 70 bool br_multicast_enabled(const struct net_device *dev); 71 bool br_multicast_router(const struct net_device *dev); 72 #else 73 static inline int br_multicast_list_adjacent(struct net_device *dev, 74 struct list_head *br_ip_list) 75 { 76 return 0; 77 } 78 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 79 int proto) 80 { 81 return false; 82 } 83 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 84 int proto) 85 { 86 return false; 87 } 88 static inline bool br_multicast_enabled(const struct net_device *dev) 89 { 90 return false; 91 } 92 static inline bool br_multicast_router(const struct net_device *dev) 93 { 94 return false; 95 } 96 #endif 97 98 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 99 bool br_vlan_enabled(const struct net_device *dev); 100 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 101 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 102 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 103 int br_vlan_get_info(const struct net_device *dev, u16 vid, 104 struct bridge_vlan_info *p_vinfo); 105 #else 106 static inline bool br_vlan_enabled(const struct net_device *dev) 107 { 108 return false; 109 } 110 111 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 112 { 113 return -EINVAL; 114 } 115 116 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 117 { 118 return -EINVAL; 119 } 120 121 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 122 { 123 return -EINVAL; 124 } 125 126 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 127 struct bridge_vlan_info *p_vinfo) 128 { 129 return -EINVAL; 130 } 131 #endif 132 133 #if IS_ENABLED(CONFIG_BRIDGE) 134 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 135 const unsigned char *addr, 136 __u16 vid); 137 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 138 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 139 #else 140 static inline struct net_device * 141 br_fdb_find_port(const struct net_device *br_dev, 142 const unsigned char *addr, 143 __u16 vid) 144 { 145 return NULL; 146 } 147 148 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 149 { 150 } 151 152 static inline bool 153 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 154 { 155 return false; 156 } 157 #endif 158 159 #endif 160