/* SPDX-License-Identifier: GPL-2.0-or-later */ /* * Linux ethernet bridge * * Authors: * Lennert Buytenhek <buytenh@gnu.org> */ #ifndef _LINUX_IF_BRIDGE_H #define _LINUX_IF_BRIDGE_H #include <linux/netdevice.h> #include <uapi/linux/if_bridge.h> #include <linux/bitops.h> struct br_ip { union { __be32 ip4; #if IS_ENABLED(CONFIG_IPV6) struct in6_addr ip6; #endif } src; union { __be32 ip4; #if IS_ENABLED(CONFIG_IPV6) struct in6_addr ip6; #endif unsigned char mac_addr[ETH_ALEN]; } dst; __be16 proto; __u16 vid; }; struct br_ip_list { struct list_head list; struct br_ip addr; }; #define BR_HAIRPIN_MODE BIT(0) #define BR_BPDU_GUARD BIT(1) #define BR_ROOT_BLOCK BIT(2) #define BR_MULTICAST_FAST_LEAVE BIT(3) #define BR_ADMIN_COST BIT(4) #define BR_LEARNING BIT(5) #define BR_FLOOD BIT(6) #define BR_AUTO_MASK (BR_FLOOD | BR_LEARNING) #define BR_PROMISC BIT(7) #define BR_PROXYARP BIT(8) #define BR_LEARNING_SYNC BIT(9) #define BR_PROXYARP_WIFI BIT(10) #define BR_MCAST_FLOOD BIT(11) #define BR_MULTICAST_TO_UNICAST BIT(12) #define BR_VLAN_TUNNEL BIT(13) #define BR_BCAST_FLOOD BIT(14) #define BR_NEIGH_SUPPRESS BIT(15) #define BR_ISOLATED BIT(16) #define BR_MRP_AWARE BIT(17) #define BR_MRP_LOST_CONT BIT(18) #define BR_MRP_LOST_IN_CONT BIT(19) #define BR_TX_FWD_OFFLOAD BIT(20) #define BR_PORT_LOCKED BIT(21) #define BR_DEFAULT_AGEING_TIME (300 * HZ) struct net_bridge; void brioctl_set(int (*hook)(struct net *net, struct net_bridge *br, unsigned int cmd, struct ifreq *ifr, void __user *uarg)); int br_ioctl_call(struct net *net, struct net_bridge *br, unsigned int cmd, struct ifreq *ifr, void __user *uarg); #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_IGMP_SNOOPING) int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list); bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto); bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto); bool br_multicast_has_router_adjacent(struct net_device *dev, int proto); bool br_multicast_enabled(const struct net_device *dev); bool br_multicast_router(const struct net_device *dev); #else static inline int br_multicast_list_adjacent(struct net_device *dev, struct list_head *br_ip_list) { return 0; } static inline bool br_multicast_has_querier_anywhere(struct net_device *dev, int proto) { return false; } static inline bool br_multicast_has_querier_adjacent(struct net_device *dev, int proto) { return false; } static inline bool br_multicast_has_router_adjacent(struct net_device *dev, int proto) { return true; } static inline bool br_multicast_enabled(const struct net_device *dev) { return false; } static inline bool br_multicast_router(const struct net_device *dev) { return false; } #endif #if IS_ENABLED(CONFIG_BRIDGE) && IS_ENABLED(CONFIG_BRIDGE_VLAN_FILTERING) bool br_vlan_enabled(const struct net_device *dev); int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid); int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid); int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto); int br_vlan_get_info(const struct net_device *dev, u16 vid, struct bridge_vlan_info *p_vinfo); int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, struct bridge_vlan_info *p_vinfo); bool br_mst_enabled(const struct net_device *dev); int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids); int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state); #else static inline bool br_vlan_enabled(const struct net_device *dev) { return false; } static inline int br_vlan_get_pvid(const struct net_device *dev, u16 *p_pvid) { return -EINVAL; } static inline int br_vlan_get_proto(const struct net_device *dev, u16 *p_proto) { return -EINVAL; } static inline int br_vlan_get_pvid_rcu(const struct net_device *dev, u16 *p_pvid) { return -EINVAL; } static inline int br_vlan_get_info(const struct net_device *dev, u16 vid, struct bridge_vlan_info *p_vinfo) { return -EINVAL; } static inline int br_vlan_get_info_rcu(const struct net_device *dev, u16 vid, struct bridge_vlan_info *p_vinfo) { return -EINVAL; } static inline bool br_mst_enabled(const struct net_device *dev) { return false; } static inline int br_mst_get_info(const struct net_device *dev, u16 msti, unsigned long *vids) { return -EINVAL; } static inline int br_mst_get_state(const struct net_device *dev, u16 msti, u8 *state) { return -EINVAL; } #endif #if IS_ENABLED(CONFIG_BRIDGE) struct net_device *br_fdb_find_port(const struct net_device *br_dev, const unsigned char *addr, __u16 vid); void br_fdb_clear_offload(const struct net_device *dev, u16 vid); bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag); u8 br_port_get_stp_state(const struct net_device *dev); clock_t br_get_ageing_time(const struct net_device *br_dev); #else static inline struct net_device * br_fdb_find_port(const struct net_device *br_dev, const unsigned char *addr, __u16 vid) { return NULL; } static inline void br_fdb_clear_offload(const struct net_device *dev, u16 vid) { } static inline bool br_port_flag_is_set(const struct net_device *dev, unsigned long flag) { return false; } static inline u8 br_port_get_stp_state(const struct net_device *dev) { return BR_STATE_DISABLED; } static inline clock_t br_get_ageing_time(const struct net_device *br_dev) { return 0; } #endif #endif