11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Linux ethernet bridge 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Authors: 51da177e4SLinus Torvalds * Lennert Buytenhek <buytenh@gnu.org> 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 81da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 91da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 101da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 111da177e4SLinus Torvalds */ 121da177e4SLinus Torvalds 131da177e4SLinus Torvalds #ifndef _BR_PRIVATE_H 141da177e4SLinus Torvalds #define _BR_PRIVATE_H 151da177e4SLinus Torvalds 161da177e4SLinus Torvalds #include <linux/netdevice.h> 171da177e4SLinus Torvalds #include <linux/if_bridge.h> 184adf0af6SSimon Wunderlich #include <net/route.h> 191da177e4SLinus Torvalds 201da177e4SLinus Torvalds #define BR_HASH_BITS 8 211da177e4SLinus Torvalds #define BR_HASH_SIZE (1 << BR_HASH_BITS) 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #define BR_HOLD_TIME (1*HZ) 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #define BR_PORT_BITS 10 261da177e4SLinus Torvalds #define BR_MAX_PORTS (1<<BR_PORT_BITS) 271da177e4SLinus Torvalds 289cde0708SStephen Hemminger #define BR_VERSION "2.3" 299cde0708SStephen Hemminger 309cde0708SStephen Hemminger /* Path to usermode spanning tree program */ 319cde0708SStephen Hemminger #define BR_STP_PROG "/sbin/bridge-stp" 328cbb512eSStephen Hemminger 331da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 341da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 351da177e4SLinus Torvalds typedef __u16 port_id; 361da177e4SLinus Torvalds 371da177e4SLinus Torvalds struct bridge_id 381da177e4SLinus Torvalds { 391da177e4SLinus Torvalds unsigned char prio[2]; 401da177e4SLinus Torvalds unsigned char addr[6]; 411da177e4SLinus Torvalds }; 421da177e4SLinus Torvalds 431da177e4SLinus Torvalds struct mac_addr 441da177e4SLinus Torvalds { 451da177e4SLinus Torvalds unsigned char addr[6]; 461da177e4SLinus Torvalds }; 471da177e4SLinus Torvalds 481da177e4SLinus Torvalds struct net_bridge_fdb_entry 491da177e4SLinus Torvalds { 501da177e4SLinus Torvalds struct hlist_node hlist; 511da177e4SLinus Torvalds struct net_bridge_port *dst; 521da177e4SLinus Torvalds 531da177e4SLinus Torvalds struct rcu_head rcu; 541da177e4SLinus Torvalds atomic_t use_count; 551da177e4SLinus Torvalds unsigned long ageing_timer; 561da177e4SLinus Torvalds mac_addr addr; 571da177e4SLinus Torvalds unsigned char is_local; 581da177e4SLinus Torvalds unsigned char is_static; 591da177e4SLinus Torvalds }; 601da177e4SLinus Torvalds 611da177e4SLinus Torvalds struct net_bridge_port 621da177e4SLinus Torvalds { 631da177e4SLinus Torvalds struct net_bridge *br; 641da177e4SLinus Torvalds struct net_device *dev; 651da177e4SLinus Torvalds struct list_head list; 661da177e4SLinus Torvalds 671da177e4SLinus Torvalds /* STP */ 681da177e4SLinus Torvalds u8 priority; 691da177e4SLinus Torvalds u8 state; 701da177e4SLinus Torvalds u16 port_no; 711da177e4SLinus Torvalds unsigned char topology_change_ack; 721da177e4SLinus Torvalds unsigned char config_pending; 731da177e4SLinus Torvalds port_id port_id; 741da177e4SLinus Torvalds port_id designated_port; 751da177e4SLinus Torvalds bridge_id designated_root; 761da177e4SLinus Torvalds bridge_id designated_bridge; 771da177e4SLinus Torvalds u32 path_cost; 781da177e4SLinus Torvalds u32 designated_cost; 791da177e4SLinus Torvalds 801da177e4SLinus Torvalds struct timer_list forward_delay_timer; 811da177e4SLinus Torvalds struct timer_list hold_timer; 821da177e4SLinus Torvalds struct timer_list message_age_timer; 831da177e4SLinus Torvalds struct kobject kobj; 841da177e4SLinus Torvalds struct rcu_head rcu; 851da177e4SLinus Torvalds }; 861da177e4SLinus Torvalds 871da177e4SLinus Torvalds struct net_bridge 881da177e4SLinus Torvalds { 891da177e4SLinus Torvalds spinlock_t lock; 901da177e4SLinus Torvalds struct list_head port_list; 911da177e4SLinus Torvalds struct net_device *dev; 921da177e4SLinus Torvalds spinlock_t hash_lock; 931da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 941da177e4SLinus Torvalds struct list_head age_list; 95edb5e46fSStephen Hemminger unsigned long feature_mask; 964adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 974adf0af6SSimon Wunderlich struct rtable fake_rtable; 984adf0af6SSimon Wunderlich #endif 9992c0574fSStephen Hemminger unsigned long flags; 10092c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 1011da177e4SLinus Torvalds 1021da177e4SLinus Torvalds /* STP */ 1031da177e4SLinus Torvalds bridge_id designated_root; 1041da177e4SLinus Torvalds bridge_id bridge_id; 1051da177e4SLinus Torvalds u32 root_path_cost; 1061da177e4SLinus Torvalds unsigned long max_age; 1071da177e4SLinus Torvalds unsigned long hello_time; 1081da177e4SLinus Torvalds unsigned long forward_delay; 1091da177e4SLinus Torvalds unsigned long bridge_max_age; 1101da177e4SLinus Torvalds unsigned long ageing_time; 1111da177e4SLinus Torvalds unsigned long bridge_hello_time; 1121da177e4SLinus Torvalds unsigned long bridge_forward_delay; 1131da177e4SLinus Torvalds 114fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 1151da177e4SLinus Torvalds u16 root_port; 1169cde0708SStephen Hemminger 1179cde0708SStephen Hemminger enum { 1189cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 1199cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 1209cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 1219cde0708SStephen Hemminger } stp_enabled; 1229cde0708SStephen Hemminger 1231da177e4SLinus Torvalds unsigned char topology_change; 1241da177e4SLinus Torvalds unsigned char topology_change_detected; 1251da177e4SLinus Torvalds 1261da177e4SLinus Torvalds struct timer_list hello_timer; 1271da177e4SLinus Torvalds struct timer_list tcn_timer; 1281da177e4SLinus Torvalds struct timer_list topology_change_timer; 1291da177e4SLinus Torvalds struct timer_list gc_timer; 13043b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 1311da177e4SLinus Torvalds }; 1321da177e4SLinus Torvalds 1331da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 134fda93d92SStephen Hemminger extern const u8 br_group_address[ETH_ALEN]; 1351da177e4SLinus Torvalds 1361da177e4SLinus Torvalds /* called under bridge lock */ 1371da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 1381da177e4SLinus Torvalds { 1391da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 1401da177e4SLinus Torvalds } 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds /* br_device.c */ 1431da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 1441da177e4SLinus Torvalds extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 1451da177e4SLinus Torvalds 1461da177e4SLinus Torvalds /* br_fdb.c */ 14787a596e0SAkinobu Mita extern int br_fdb_init(void); 1481da177e4SLinus Torvalds extern void br_fdb_fini(void); 1499cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 1501da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 1511da177e4SLinus Torvalds const unsigned char *newaddr); 1521da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 1531da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 1541a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 1551da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 1561da177e4SLinus Torvalds const unsigned char *addr); 1571da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, 1581da177e4SLinus Torvalds unsigned char *addr); 1591da177e4SLinus Torvalds extern void br_fdb_put(struct net_bridge_fdb_entry *ent); 1601da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 1611da177e4SLinus Torvalds unsigned long count, unsigned long off); 1621da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 1631da177e4SLinus Torvalds struct net_bridge_port *source, 1641da177e4SLinus Torvalds const unsigned char *addr); 1651da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 1661da177e4SLinus Torvalds struct net_bridge_port *source, 1671da177e4SLinus Torvalds const unsigned char *addr); 1681da177e4SLinus Torvalds 1691da177e4SLinus Torvalds /* br_forward.c */ 1701da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 1711da177e4SLinus Torvalds struct sk_buff *skb); 1721da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 1731da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 1741da177e4SLinus Torvalds struct sk_buff *skb); 1751da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 176e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 177e081e1e3SHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb); 1781da177e4SLinus Torvalds 1791da177e4SLinus Torvalds /* br_if.c */ 180269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 1814aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 1824aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 1831da177e4SLinus Torvalds extern void br_cleanup_bridges(void); 1841da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 1851da177e4SLinus Torvalds struct net_device *dev); 1861da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 1871da177e4SLinus Torvalds struct net_device *dev); 1881da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 18981d35307SStephen Hemminger extern void br_features_recompute(struct net_bridge *br); 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* br_input.c */ 1921da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 1936229e362SStephen Hemminger extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, 1946229e362SStephen Hemminger struct sk_buff *skb); 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds /* br_ioctl.c */ 1971da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 198881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds /* br_netfilter.c */ 201c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 2021da177e4SLinus Torvalds extern int br_netfilter_init(void); 2031da177e4SLinus Torvalds extern void br_netfilter_fini(void); 2044adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 205c0909713SStephen Hemminger #else 206c0909713SStephen Hemminger #define br_netfilter_init() (0) 207c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 2084adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 209c0909713SStephen Hemminger #endif 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds /* br_stp.c */ 2121da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 2131da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 2141da177e4SLinus Torvalds u16 port_no); 2151da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 2161da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 2171da177e4SLinus Torvalds 2181da177e4SLinus Torvalds /* br_stp_if.c */ 2191da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 2201da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 2219cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 2221da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 2231da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 2241da177e4SLinus Torvalds extern void br_stp_recalculate_bridge_id(struct net_bridge *br); 2254505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 2261da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 2271da177e4SLinus Torvalds u16 newprio); 2281da177e4SLinus Torvalds extern void br_stp_set_port_priority(struct net_bridge_port *p, 2291da177e4SLinus Torvalds u8 newprio); 2301da177e4SLinus Torvalds extern void br_stp_set_path_cost(struct net_bridge_port *p, 2311da177e4SLinus Torvalds u32 path_cost); 2321da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 2331da177e4SLinus Torvalds 2341da177e4SLinus Torvalds /* br_stp_bpdu.c */ 2357c85fbf0SPatrick McHardy struct stp_proto; 2367c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 2377c85fbf0SPatrick McHardy struct net_device *dev); 2381da177e4SLinus Torvalds 2391da177e4SLinus Torvalds /* br_stp_timer.c */ 2401da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 2411da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 2421da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds /* br.c */ 2451da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, 2461da177e4SLinus Torvalds unsigned char *addr); 2471da177e4SLinus Torvalds extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); 2481da177e4SLinus Torvalds 2491da177e4SLinus Torvalds 25011dc1f36SStephen Hemminger /* br_netlink.c */ 25132fe21c0SThomas Graf extern int br_netlink_init(void); 25211dc1f36SStephen Hemminger extern void br_netlink_fini(void); 25311dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 25411dc1f36SStephen Hemminger 2551da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 2561da177e4SLinus Torvalds /* br_sysfs_if.c */ 257bab1deeaSStephen Hemminger extern struct sysfs_ops brport_sysfs_ops; 2581da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 2591da177e4SLinus Torvalds 2601da177e4SLinus Torvalds /* br_sysfs_br.c */ 2611da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 2621da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds #else 2651da177e4SLinus Torvalds 2661da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 2671da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 2681da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 2691da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds #endif 272