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_has_router_adjacent(struct net_device *dev, int proto); 71 bool br_multicast_enabled(const struct net_device *dev); 72 bool br_multicast_router(const struct net_device *dev); 73 int br_mdb_replay(struct net_device *br_dev, struct net_device *dev, 74 const void *ctx, bool adding, struct notifier_block *nb, 75 struct netlink_ext_ack *extack); 76 #else 77 static inline int br_multicast_list_adjacent(struct net_device *dev, 78 struct list_head *br_ip_list) 79 { 80 return 0; 81 } 82 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 83 int proto) 84 { 85 return false; 86 } 87 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 88 int proto) 89 { 90 return false; 91 } 92 93 static inline bool br_multicast_has_router_adjacent(struct net_device *dev, 94 int proto) 95 { 96 return true; 97 } 98 99 static inline bool br_multicast_enabled(const struct net_device *dev) 100 { 101 return false; 102 } 103 static inline bool br_multicast_router(const struct net_device *dev) 104 { 105 return false; 106 } 107 static inline int br_mdb_replay(const struct net_device *br_dev, 108 const struct net_device *dev, const void *ctx, 109 bool adding, struct notifier_block *nb, 110 struct netlink_ext_ack *extack) 111 { 112 return -EOPNOTSUPP; 113 } 114 #endif 115 116 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 117 bool br_vlan_enabled(const struct net_device *dev); 118 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 119 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 120 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 121 int br_vlan_get_info(const struct net_device *dev, u16 vid, 122 struct bridge_vlan_info *p_vinfo); 123 int br_vlan_replay(struct net_device *br_dev, struct net_device *dev, 124 const void *ctx, bool adding, struct notifier_block *nb, 125 struct netlink_ext_ack *extack); 126 #else 127 static inline bool br_vlan_enabled(const struct net_device *dev) 128 { 129 return false; 130 } 131 132 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 133 { 134 return -EINVAL; 135 } 136 137 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 138 { 139 return -EINVAL; 140 } 141 142 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 143 { 144 return -EINVAL; 145 } 146 147 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 148 struct bridge_vlan_info *p_vinfo) 149 { 150 return -EINVAL; 151 } 152 153 static inline int br_vlan_replay(struct net_device *br_dev, 154 struct net_device *dev, const void *ctx, 155 bool adding, struct notifier_block *nb, 156 struct netlink_ext_ack *extack) 157 { 158 return -EOPNOTSUPP; 159 } 160 #endif 161 162 #if IS_ENABLED(CONFIG_BRIDGE) 163 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 164 const unsigned char *addr, 165 __u16 vid); 166 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 167 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 168 u8 br_port_get_stp_state(const struct net_device *dev); 169 clock_t br_get_ageing_time(const struct net_device *br_dev); 170 int br_fdb_replay(const struct net_device *br_dev, const struct net_device *dev, 171 const void *ctx, bool adding, struct notifier_block *nb); 172 #else 173 static inline struct net_device * 174 br_fdb_find_port(const struct net_device *br_dev, 175 const unsigned char *addr, 176 __u16 vid) 177 { 178 return NULL; 179 } 180 181 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 182 { 183 } 184 185 static inline bool 186 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 187 { 188 return false; 189 } 190 191 static inline u8 br_port_get_stp_state(const struct net_device *dev) 192 { 193 return BR_STATE_DISABLED; 194 } 195 196 static inline clock_t br_get_ageing_time(const struct net_device *br_dev) 197 { 198 return 0; 199 } 200 201 static inline int br_fdb_replay(const struct net_device *br_dev, 202 const struct net_device *dev, const void *ctx, 203 bool adding, struct notifier_block *nb) 204 { 205 return -EOPNOTSUPP; 206 } 207 #endif 208 209 #endif 210