1/* SPDX-License-Identifier: GPL-2.0-or-later */ 2/* 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 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 16struct 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 34struct 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#define BR_PORT_LOCKED BIT(21) 62#define BR_PORT_MAB BIT(22) 63#define BR_NEIGH_VLAN_SUPPRESS BIT(23) 64 65#define BR_DEFAULT_AGEING_TIME (300 * HZ) 66 67struct net_bridge; 68void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br, 69 unsigned int cmd, struct ifreq *ifr, 70 void __user *uarg)); 71int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd, 72 struct ifreq *ifr, void __user *uarg); 73 74#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 75int br_multicast_list_adjacent(struct net_device *dev, 76 struct list_head *br_ip_list); 77bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 78bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 79bool br_multicast_has_router_adjacent(struct net_device *dev, int proto); 80bool br_multicast_enabled(const struct net_device *dev); 81bool br_multicast_router(const struct net_device *dev); 82#else 83static inline int br_multicast_list_adjacent(struct net_device *dev, 84 struct list_head *br_ip_list) 85{ 86 return 0; 87} 88static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 89 int proto) 90{ 91 return false; 92} 93static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 94 int proto) 95{ 96 return false; 97} 98 99static inline bool br_multicast_has_router_adjacent(struct net_device *dev, 100 int proto) 101{ 102 return true; 103} 104 105static inline bool br_multicast_enabled(const struct net_device *dev) 106{ 107 return false; 108} 109static inline bool br_multicast_router(const struct net_device *dev) 110{ 111 return false; 112} 113#endif 114 115#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 116bool br_vlan_enabled(const struct net_device *dev); 117int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 118int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 119int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 120int br_vlan_get_info(const struct net_device *dev, u16 vid, 121 struct bridge_vlan_info *p_vinfo); 122int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 123 struct bridge_vlan_info *p_vinfo); 124bool br_mst_enabled(const struct net_device *dev); 125int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids); 126int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state); 127#else 128static inline bool br_vlan_enabled(const struct net_device *dev) 129{ 130 return false; 131} 132 133static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 134{ 135 return -EINVAL; 136} 137 138static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 139{ 140 return -EINVAL; 141} 142 143static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 144{ 145 return -EINVAL; 146} 147 148static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 149 struct bridge_vlan_info *p_vinfo) 150{ 151 return -EINVAL; 152} 153 154static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 155 struct bridge_vlan_info *p_vinfo) 156{ 157 return -EINVAL; 158} 159 160static inline bool br_mst_enabled(const struct net_device *dev) 161{ 162 return false; 163} 164 165static inline int br_mst_get_info(const struct net_device *dev, u16 msti, 166 unsigned long *vids) 167{ 168 return -EINVAL; 169} 170static inline int br_mst_get_state(const struct net_device *dev, u16 msti, 171 u8 *state) 172{ 173 return -EINVAL; 174} 175#endif 176 177#if IS_ENABLED(CONFIG_BRIDGE) 178struct net_device *br_fdb_find_port(const struct net_device *br_dev, 179 const unsigned char *addr, 180 __u16 vid); 181void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 182bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 183u8 br_port_get_stp_state(const struct net_device *dev); 184clock_t br_get_ageing_time(const struct net_device *br_dev); 185#else 186static inline struct net_device * 187br_fdb_find_port(const struct net_device *br_dev, 188 const unsigned char *addr, 189 __u16 vid) 190{ 191 return NULL; 192} 193 194static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 195{ 196} 197 198static inline bool 199br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 200{ 201 return false; 202} 203 204static inline u8 br_port_get_stp_state(const struct net_device *dev) 205{ 206 return BR_STATE_DISABLED; 207} 208 209static inline clock_t br_get_ageing_time(const struct net_device *br_dev) 210{ 211 return 0; 212} 213#endif 214 215#endif 216