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 #define BR_TX_FWD_OFFLOAD BIT(20) 61 62 #define BR_DEFAULT_AGEING_TIME (300 * HZ) 63 64 struct net_bridge; 65 void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br, 66 unsigned int cmd, struct ifreq *ifr, 67 void __user *uarg)); 68 int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd, 69 struct ifreq *ifr, void __user *uarg); 70 71 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 72 int br_multicast_list_adjacent(struct net_device *dev, 73 struct list_head *br_ip_list); 74 bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 75 bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 76 bool br_multicast_has_router_adjacent(struct net_device *dev, int proto); 77 bool br_multicast_enabled(const struct net_device *dev); 78 bool br_multicast_router(const struct net_device *dev); 79 #else 80 static inline int br_multicast_list_adjacent(struct net_device *dev, 81 struct list_head *br_ip_list) 82 { 83 return 0; 84 } 85 static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 86 int proto) 87 { 88 return false; 89 } 90 static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 91 int proto) 92 { 93 return false; 94 } 95 96 static inline bool br_multicast_has_router_adjacent(struct net_device *dev, 97 int proto) 98 { 99 return true; 100 } 101 102 static inline bool br_multicast_enabled(const struct net_device *dev) 103 { 104 return false; 105 } 106 static inline bool br_multicast_router(const struct net_device *dev) 107 { 108 return false; 109 } 110 #endif 111 112 #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 113 bool br_vlan_enabled(const struct net_device *dev); 114 int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 115 int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 116 int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 117 int br_vlan_get_info(const struct net_device *dev, u16 vid, 118 struct bridge_vlan_info *p_vinfo); 119 int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 120 struct bridge_vlan_info *p_vinfo); 121 #else 122 static inline bool br_vlan_enabled(const struct net_device *dev) 123 { 124 return false; 125 } 126 127 static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 128 { 129 return -EINVAL; 130 } 131 132 static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 133 { 134 return -EINVAL; 135 } 136 137 static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 138 { 139 return -EINVAL; 140 } 141 142 static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 143 struct bridge_vlan_info *p_vinfo) 144 { 145 return -EINVAL; 146 } 147 148 static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 149 struct bridge_vlan_info *p_vinfo) 150 { 151 return -EINVAL; 152 } 153 #endif 154 155 #if IS_ENABLED(CONFIG_BRIDGE) 156 struct net_device *br_fdb_find_port(const struct net_device *br_dev, 157 const unsigned char *addr, 158 __u16 vid); 159 void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 160 bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 161 u8 br_port_get_stp_state(const struct net_device *dev); 162 clock_t br_get_ageing_time(const struct net_device *br_dev); 163 #else 164 static inline struct net_device * 165 br_fdb_find_port(const struct net_device *br_dev, 166 const unsigned char *addr, 167 __u16 vid) 168 { 169 return NULL; 170 } 171 172 static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 173 { 174 } 175 176 static inline bool 177 br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 178 { 179 return false; 180 } 181 182 static inline u8 br_port_get_stp_state(const struct net_device *dev) 183 { 184 return BR_STATE_DISABLED; 185 } 186 187 static inline clock_t br_get_ageing_time(const struct net_device *br_dev) 188 { 189 return 0; 190 } 191 #endif 192 193 #endif 194