if_bridge.h (5574B)
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 63#define BR_DEFAULT_AGEING_TIME (300 * HZ) 64 65struct net_bridge; 66void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br, 67 unsigned int cmd, struct ifreq *ifr, 68 void __user *uarg)); 69int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd, 70 struct ifreq *ifr, void __user *uarg); 71 72#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) 73int br_multicast_list_adjacent(struct net_device *dev, 74 struct list_head *br_ip_list); 75bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); 76bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); 77bool br_multicast_has_router_adjacent(struct net_device *dev, int proto); 78bool br_multicast_enabled(const struct net_device *dev); 79bool br_multicast_router(const struct net_device *dev); 80#else 81static inline int br_multicast_list_adjacent(struct net_device *dev, 82 struct list_head *br_ip_list) 83{ 84 return 0; 85} 86static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, 87 int proto) 88{ 89 return false; 90} 91static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, 92 int proto) 93{ 94 return false; 95} 96 97static inline bool br_multicast_has_router_adjacent(struct net_device *dev, 98 int proto) 99{ 100 return true; 101} 102 103static inline bool br_multicast_enabled(const struct net_device *dev) 104{ 105 return false; 106} 107static inline bool br_multicast_router(const struct net_device *dev) 108{ 109 return false; 110} 111#endif 112 113#if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) 114bool br_vlan_enabled(const struct net_device *dev); 115int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); 116int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); 117int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); 118int br_vlan_get_info(const struct net_device *dev, u16 vid, 119 struct bridge_vlan_info *p_vinfo); 120int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 121 struct bridge_vlan_info *p_vinfo); 122bool br_mst_enabled(const struct net_device *dev); 123int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids); 124int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state); 125#else 126static inline bool br_vlan_enabled(const struct net_device *dev) 127{ 128 return false; 129} 130 131static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) 132{ 133 return -EINVAL; 134} 135 136static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) 137{ 138 return -EINVAL; 139} 140 141static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) 142{ 143 return -EINVAL; 144} 145 146static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, 147 struct bridge_vlan_info *p_vinfo) 148{ 149 return -EINVAL; 150} 151 152static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, 153 struct bridge_vlan_info *p_vinfo) 154{ 155 return -EINVAL; 156} 157 158static inline bool br_mst_enabled(const struct net_device *dev) 159{ 160 return false; 161} 162 163static inline int br_mst_get_info(const struct net_device *dev, u16 msti, 164 unsigned long *vids) 165{ 166 return -EINVAL; 167} 168static inline int br_mst_get_state(const struct net_device *dev, u16 msti, 169 u8 *state) 170{ 171 return -EINVAL; 172} 173#endif 174 175#if IS_ENABLED(CONFIG_BRIDGE) 176struct net_device *br_fdb_find_port(const struct net_device *br_dev, 177 const unsigned char *addr, 178 __u16 vid); 179void br_fdb_clear_offload(const struct net_device *dev, u16 vid); 180bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); 181u8 br_port_get_stp_state(const struct net_device *dev); 182clock_t br_get_ageing_time(const struct net_device *br_dev); 183#else 184static inline struct net_device * 185br_fdb_find_port(const struct net_device *br_dev, 186 const unsigned char *addr, 187 __u16 vid) 188{ 189 return NULL; 190} 191 192static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) 193{ 194} 195 196static inline bool 197br_port_flag_is_set(const struct net_device *dev, unsigned long flag) 198{ 199 return false; 200} 201 202static inline u8 br_port_get_stp_state(const struct net_device *dev) 203{ 204 return BR_STATE_DISABLED; 205} 206 207static inline clock_t br_get_ageing_time(const struct net_device *br_dev) 208{ 209 return 0; 210} 211#endif 212 213#endif