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> 181da177e4SLinus Torvalds 191da177e4SLinus Torvalds #define BR_HASH_BITS 8 201da177e4SLinus Torvalds #define BR_HASH_SIZE (1 << BR_HASH_BITS) 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds #define BR_HOLD_TIME (1*HZ) 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds #define BR_PORT_BITS 10 251da177e4SLinus Torvalds #define BR_MAX_PORTS (1<<BR_PORT_BITS) 261da177e4SLinus Torvalds 279cde0708SStephen Hemminger #define BR_VERSION "2.3" 289cde0708SStephen Hemminger 299cde0708SStephen Hemminger /* Path to usermode spanning tree program */ 309cde0708SStephen Hemminger #define BR_STP_PROG "/sbin/bridge-stp" 318cbb512eSStephen Hemminger 321da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 331da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 341da177e4SLinus Torvalds typedef __u16 port_id; 351da177e4SLinus Torvalds 361da177e4SLinus Torvalds struct bridge_id 371da177e4SLinus Torvalds { 381da177e4SLinus Torvalds unsigned char prio[2]; 391da177e4SLinus Torvalds unsigned char addr[6]; 401da177e4SLinus Torvalds }; 411da177e4SLinus Torvalds 421da177e4SLinus Torvalds struct mac_addr 431da177e4SLinus Torvalds { 441da177e4SLinus Torvalds unsigned char addr[6]; 451da177e4SLinus Torvalds }; 461da177e4SLinus Torvalds 471da177e4SLinus Torvalds struct net_bridge_fdb_entry 481da177e4SLinus Torvalds { 491da177e4SLinus Torvalds struct hlist_node hlist; 501da177e4SLinus Torvalds struct net_bridge_port *dst; 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds struct rcu_head rcu; 531da177e4SLinus Torvalds atomic_t use_count; 541da177e4SLinus Torvalds unsigned long ageing_timer; 551da177e4SLinus Torvalds mac_addr addr; 561da177e4SLinus Torvalds unsigned char is_local; 571da177e4SLinus Torvalds unsigned char is_static; 581da177e4SLinus Torvalds }; 591da177e4SLinus Torvalds 601da177e4SLinus Torvalds struct net_bridge_port 611da177e4SLinus Torvalds { 621da177e4SLinus Torvalds struct net_bridge *br; 631da177e4SLinus Torvalds struct net_device *dev; 641da177e4SLinus Torvalds struct list_head list; 651da177e4SLinus Torvalds 661da177e4SLinus Torvalds /* STP */ 671da177e4SLinus Torvalds u8 priority; 681da177e4SLinus Torvalds u8 state; 691da177e4SLinus Torvalds u16 port_no; 701da177e4SLinus Torvalds unsigned char topology_change_ack; 711da177e4SLinus Torvalds unsigned char config_pending; 721da177e4SLinus Torvalds port_id port_id; 731da177e4SLinus Torvalds port_id designated_port; 741da177e4SLinus Torvalds bridge_id designated_root; 751da177e4SLinus Torvalds bridge_id designated_bridge; 761da177e4SLinus Torvalds u32 path_cost; 771da177e4SLinus Torvalds u32 designated_cost; 781da177e4SLinus Torvalds 791da177e4SLinus Torvalds struct timer_list forward_delay_timer; 801da177e4SLinus Torvalds struct timer_list hold_timer; 811da177e4SLinus Torvalds struct timer_list message_age_timer; 821da177e4SLinus Torvalds struct kobject kobj; 831da177e4SLinus Torvalds struct rcu_head rcu; 841da177e4SLinus Torvalds }; 851da177e4SLinus Torvalds 861da177e4SLinus Torvalds struct net_bridge 871da177e4SLinus Torvalds { 881da177e4SLinus Torvalds spinlock_t lock; 891da177e4SLinus Torvalds struct list_head port_list; 901da177e4SLinus Torvalds struct net_device *dev; 911da177e4SLinus Torvalds spinlock_t hash_lock; 921da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 931da177e4SLinus Torvalds struct list_head age_list; 94edb5e46fSStephen Hemminger unsigned long feature_mask; 9592c0574fSStephen Hemminger unsigned long flags; 9692c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 971da177e4SLinus Torvalds 981da177e4SLinus Torvalds /* STP */ 991da177e4SLinus Torvalds bridge_id designated_root; 1001da177e4SLinus Torvalds bridge_id bridge_id; 1011da177e4SLinus Torvalds u32 root_path_cost; 1021da177e4SLinus Torvalds unsigned long max_age; 1031da177e4SLinus Torvalds unsigned long hello_time; 1041da177e4SLinus Torvalds unsigned long forward_delay; 1051da177e4SLinus Torvalds unsigned long bridge_max_age; 1061da177e4SLinus Torvalds unsigned long ageing_time; 1071da177e4SLinus Torvalds unsigned long bridge_hello_time; 1081da177e4SLinus Torvalds unsigned long bridge_forward_delay; 1091da177e4SLinus Torvalds 110fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 1111da177e4SLinus Torvalds u16 root_port; 1129cde0708SStephen Hemminger 1139cde0708SStephen Hemminger enum { 1149cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 1159cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 1169cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 1179cde0708SStephen Hemminger } stp_enabled; 1189cde0708SStephen Hemminger 1191da177e4SLinus Torvalds unsigned char topology_change; 1201da177e4SLinus Torvalds unsigned char topology_change_detected; 1211da177e4SLinus Torvalds 1221da177e4SLinus Torvalds struct timer_list hello_timer; 1231da177e4SLinus Torvalds struct timer_list tcn_timer; 1241da177e4SLinus Torvalds struct timer_list topology_change_timer; 1251da177e4SLinus Torvalds struct timer_list gc_timer; 12643b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 1271da177e4SLinus Torvalds }; 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 130fda93d92SStephen Hemminger extern const u8 br_group_address[ETH_ALEN]; 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds /* called under bridge lock */ 1331da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 1341da177e4SLinus Torvalds { 1351da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 1361da177e4SLinus Torvalds } 1371da177e4SLinus Torvalds 1381da177e4SLinus Torvalds /* br_device.c */ 1391da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 1401da177e4SLinus Torvalds extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 1411da177e4SLinus Torvalds 1421da177e4SLinus Torvalds /* br_fdb.c */ 14387a596e0SAkinobu Mita extern int br_fdb_init(void); 1441da177e4SLinus Torvalds extern void br_fdb_fini(void); 1459cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 1461da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 1471da177e4SLinus Torvalds const unsigned char *newaddr); 1481da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 1491da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 1501a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 1511da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 1521da177e4SLinus Torvalds const unsigned char *addr); 1531da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, 1541da177e4SLinus Torvalds unsigned char *addr); 1551da177e4SLinus Torvalds extern void br_fdb_put(struct net_bridge_fdb_entry *ent); 1561da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 1571da177e4SLinus Torvalds unsigned long count, unsigned long off); 1581da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 1591da177e4SLinus Torvalds struct net_bridge_port *source, 1601da177e4SLinus Torvalds const unsigned char *addr); 1611da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 1621da177e4SLinus Torvalds struct net_bridge_port *source, 1631da177e4SLinus Torvalds const unsigned char *addr); 1641da177e4SLinus Torvalds 1651da177e4SLinus Torvalds /* br_forward.c */ 1661da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 1671da177e4SLinus Torvalds struct sk_buff *skb); 1681da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 1691da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 1701da177e4SLinus Torvalds struct sk_buff *skb); 1711da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 172e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 173e081e1e3SHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb); 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds /* br_if.c */ 176269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 1771da177e4SLinus Torvalds extern int br_add_bridge(const char *name); 1781da177e4SLinus Torvalds extern int br_del_bridge(const char *name); 1791da177e4SLinus Torvalds extern void br_cleanup_bridges(void); 1801da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 1811da177e4SLinus Torvalds struct net_device *dev); 1821da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 1831da177e4SLinus Torvalds struct net_device *dev); 1841da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 18581d35307SStephen Hemminger extern void br_features_recompute(struct net_bridge *br); 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds /* br_input.c */ 1881da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 1896229e362SStephen Hemminger extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, 1906229e362SStephen Hemminger struct sk_buff *skb); 1911da177e4SLinus Torvalds 1921da177e4SLinus Torvalds /* br_ioctl.c */ 1931da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 194881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 1951da177e4SLinus Torvalds 1961da177e4SLinus Torvalds /* br_netfilter.c */ 197c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 1981da177e4SLinus Torvalds extern int br_netfilter_init(void); 1991da177e4SLinus Torvalds extern void br_netfilter_fini(void); 200c0909713SStephen Hemminger #else 201c0909713SStephen Hemminger #define br_netfilter_init() (0) 202c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 203c0909713SStephen Hemminger #endif 2041da177e4SLinus Torvalds 2051da177e4SLinus Torvalds /* br_stp.c */ 2061da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 2071da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 2081da177e4SLinus Torvalds u16 port_no); 2091da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 2101da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 2111da177e4SLinus Torvalds 2121da177e4SLinus Torvalds /* br_stp_if.c */ 2131da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 2141da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 2159cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 2161da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 2171da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 2181da177e4SLinus Torvalds extern void br_stp_recalculate_bridge_id(struct net_bridge *br); 2194505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 2201da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 2211da177e4SLinus Torvalds u16 newprio); 2221da177e4SLinus Torvalds extern void br_stp_set_port_priority(struct net_bridge_port *p, 2231da177e4SLinus Torvalds u8 newprio); 2241da177e4SLinus Torvalds extern void br_stp_set_path_cost(struct net_bridge_port *p, 2251da177e4SLinus Torvalds u32 path_cost); 2261da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 2271da177e4SLinus Torvalds 2281da177e4SLinus Torvalds /* br_stp_bpdu.c */ 229cf0f02d0SStephen Hemminger extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev, 230cf0f02d0SStephen Hemminger struct packet_type *pt, struct net_device *orig_dev); 2311da177e4SLinus Torvalds 2321da177e4SLinus Torvalds /* br_stp_timer.c */ 2331da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 2341da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 2351da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds /* br.c */ 2381da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, 2391da177e4SLinus Torvalds unsigned char *addr); 2401da177e4SLinus Torvalds extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); 2411da177e4SLinus Torvalds 2421da177e4SLinus Torvalds 24311dc1f36SStephen Hemminger /* br_netlink.c */ 24432fe21c0SThomas Graf extern int br_netlink_init(void); 24511dc1f36SStephen Hemminger extern void br_netlink_fini(void); 24611dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 24711dc1f36SStephen Hemminger 2481da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 2491da177e4SLinus Torvalds /* br_sysfs_if.c */ 250bab1deeaSStephen Hemminger extern struct sysfs_ops brport_sysfs_ops; 2511da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds /* br_sysfs_br.c */ 2541da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 2551da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 2561da177e4SLinus Torvalds 2571da177e4SLinus Torvalds #else 2581da177e4SLinus Torvalds 2591da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 2601da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 2611da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 2621da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 2631da177e4SLinus Torvalds 2641da177e4SLinus Torvalds #endif 265