11da177e4SLinus Torvalds /* 21da177e4SLinus Torvalds * Linux ethernet bridge 31da177e4SLinus Torvalds * 41da177e4SLinus Torvalds * Authors: 51da177e4SLinus Torvalds * Lennert Buytenhek <buytenh@gnu.org> 61da177e4SLinus Torvalds * 71da177e4SLinus Torvalds * $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $ 81da177e4SLinus Torvalds * 91da177e4SLinus Torvalds * This program is free software; you can redistribute it and/or 101da177e4SLinus Torvalds * modify it under the terms of the GNU General Public License 111da177e4SLinus Torvalds * as published by the Free Software Foundation; either version 121da177e4SLinus Torvalds * 2 of the License, or (at your option) any later version. 131da177e4SLinus Torvalds */ 141da177e4SLinus Torvalds 151da177e4SLinus Torvalds #ifndef _BR_PRIVATE_H 161da177e4SLinus Torvalds #define _BR_PRIVATE_H 171da177e4SLinus Torvalds 181da177e4SLinus Torvalds #include <linux/netdevice.h> 191da177e4SLinus Torvalds #include <linux/miscdevice.h> 201da177e4SLinus Torvalds #include <linux/if_bridge.h> 211da177e4SLinus Torvalds 221da177e4SLinus Torvalds #define BR_HASH_BITS 8 231da177e4SLinus Torvalds #define BR_HASH_SIZE (1 << BR_HASH_BITS) 241da177e4SLinus Torvalds 251da177e4SLinus Torvalds #define BR_HOLD_TIME (1*HZ) 261da177e4SLinus Torvalds 271da177e4SLinus Torvalds #define BR_PORT_BITS 10 281da177e4SLinus Torvalds #define BR_MAX_PORTS (1<<BR_PORT_BITS) 291da177e4SLinus Torvalds 301da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 311da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 321da177e4SLinus Torvalds typedef __u16 port_id; 331da177e4SLinus Torvalds 341da177e4SLinus Torvalds struct bridge_id 351da177e4SLinus Torvalds { 361da177e4SLinus Torvalds unsigned char prio[2]; 371da177e4SLinus Torvalds unsigned char addr[6]; 381da177e4SLinus Torvalds }; 391da177e4SLinus Torvalds 401da177e4SLinus Torvalds struct mac_addr 411da177e4SLinus Torvalds { 421da177e4SLinus Torvalds unsigned char addr[6]; 431da177e4SLinus Torvalds }; 441da177e4SLinus Torvalds 451da177e4SLinus Torvalds struct net_bridge_fdb_entry 461da177e4SLinus Torvalds { 471da177e4SLinus Torvalds struct hlist_node hlist; 481da177e4SLinus Torvalds struct net_bridge_port *dst; 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds struct rcu_head rcu; 511da177e4SLinus Torvalds atomic_t use_count; 521da177e4SLinus Torvalds unsigned long ageing_timer; 531da177e4SLinus Torvalds mac_addr addr; 541da177e4SLinus Torvalds unsigned char is_local; 551da177e4SLinus Torvalds unsigned char is_static; 561da177e4SLinus Torvalds }; 571da177e4SLinus Torvalds 581da177e4SLinus Torvalds struct net_bridge_port 591da177e4SLinus Torvalds { 601da177e4SLinus Torvalds struct net_bridge *br; 611da177e4SLinus Torvalds struct net_device *dev; 621da177e4SLinus Torvalds struct list_head list; 631da177e4SLinus Torvalds 641da177e4SLinus Torvalds /* STP */ 651da177e4SLinus Torvalds u8 priority; 661da177e4SLinus Torvalds u8 state; 671da177e4SLinus Torvalds u16 port_no; 681da177e4SLinus Torvalds unsigned char topology_change_ack; 691da177e4SLinus Torvalds unsigned char config_pending; 701da177e4SLinus Torvalds port_id port_id; 711da177e4SLinus Torvalds port_id designated_port; 721da177e4SLinus Torvalds bridge_id designated_root; 731da177e4SLinus Torvalds bridge_id designated_bridge; 741da177e4SLinus Torvalds u32 path_cost; 751da177e4SLinus Torvalds u32 designated_cost; 761da177e4SLinus Torvalds 771da177e4SLinus Torvalds struct timer_list forward_delay_timer; 781da177e4SLinus Torvalds struct timer_list hold_timer; 791da177e4SLinus Torvalds struct timer_list message_age_timer; 801da177e4SLinus Torvalds struct kobject kobj; 811da177e4SLinus Torvalds struct rcu_head rcu; 821da177e4SLinus Torvalds }; 831da177e4SLinus Torvalds 841da177e4SLinus Torvalds struct net_bridge 851da177e4SLinus Torvalds { 861da177e4SLinus Torvalds spinlock_t lock; 871da177e4SLinus Torvalds struct list_head port_list; 881da177e4SLinus Torvalds struct net_device *dev; 891da177e4SLinus Torvalds struct net_device_stats statistics; 901da177e4SLinus Torvalds spinlock_t hash_lock; 911da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 921da177e4SLinus Torvalds struct list_head age_list; 931da177e4SLinus Torvalds 941da177e4SLinus Torvalds /* STP */ 951da177e4SLinus Torvalds bridge_id designated_root; 961da177e4SLinus Torvalds bridge_id bridge_id; 971da177e4SLinus Torvalds u32 root_path_cost; 981da177e4SLinus Torvalds unsigned long max_age; 991da177e4SLinus Torvalds unsigned long hello_time; 1001da177e4SLinus Torvalds unsigned long forward_delay; 1011da177e4SLinus Torvalds unsigned long bridge_max_age; 1021da177e4SLinus Torvalds unsigned long ageing_time; 1031da177e4SLinus Torvalds unsigned long bridge_hello_time; 1041da177e4SLinus Torvalds unsigned long bridge_forward_delay; 1051da177e4SLinus Torvalds 1061da177e4SLinus Torvalds u16 root_port; 1071da177e4SLinus Torvalds unsigned char stp_enabled; 1081da177e4SLinus Torvalds unsigned char topology_change; 1091da177e4SLinus Torvalds unsigned char topology_change_detected; 1101da177e4SLinus Torvalds 1111da177e4SLinus Torvalds struct timer_list hello_timer; 1121da177e4SLinus Torvalds struct timer_list tcn_timer; 1131da177e4SLinus Torvalds struct timer_list topology_change_timer; 1141da177e4SLinus Torvalds struct timer_list gc_timer; 1151da177e4SLinus Torvalds struct kobject ifobj; 1161da177e4SLinus Torvalds }; 1171da177e4SLinus Torvalds 1181da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 1191da177e4SLinus Torvalds extern const unsigned char bridge_ula[6]; 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds /* called under bridge lock */ 1221da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 1231da177e4SLinus Torvalds { 1241da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 1251da177e4SLinus Torvalds } 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds 1281da177e4SLinus Torvalds /* br_device.c */ 1291da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 1301da177e4SLinus Torvalds extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 1311da177e4SLinus Torvalds 1321da177e4SLinus Torvalds /* br_fdb.c */ 1331da177e4SLinus Torvalds extern void br_fdb_init(void); 1341da177e4SLinus Torvalds extern void br_fdb_fini(void); 1351da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 1361da177e4SLinus Torvalds const unsigned char *newaddr); 1371da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 1381da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 1391da177e4SLinus Torvalds struct net_bridge_port *p); 1401da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 1411da177e4SLinus Torvalds const unsigned char *addr); 1421da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, 1431da177e4SLinus Torvalds unsigned char *addr); 1441da177e4SLinus Torvalds extern void br_fdb_put(struct net_bridge_fdb_entry *ent); 1451da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 1461da177e4SLinus Torvalds unsigned long count, unsigned long off); 1471da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 1481da177e4SLinus Torvalds struct net_bridge_port *source, 1491da177e4SLinus Torvalds const unsigned char *addr); 1501da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 1511da177e4SLinus Torvalds struct net_bridge_port *source, 1521da177e4SLinus Torvalds const unsigned char *addr); 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds /* br_forward.c */ 1551da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 1561da177e4SLinus Torvalds struct sk_buff *skb); 1571da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 1581da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 1591da177e4SLinus Torvalds struct sk_buff *skb); 1601da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 1611da177e4SLinus Torvalds extern void br_flood_deliver(struct net_bridge *br, 1621da177e4SLinus Torvalds struct sk_buff *skb, 1631da177e4SLinus Torvalds int clone); 1641da177e4SLinus Torvalds extern void br_flood_forward(struct net_bridge *br, 1651da177e4SLinus Torvalds struct sk_buff *skb, 1661da177e4SLinus Torvalds int clone); 1671da177e4SLinus Torvalds 1681da177e4SLinus Torvalds /* br_if.c */ 1691da177e4SLinus Torvalds extern int br_add_bridge(const char *name); 1701da177e4SLinus Torvalds extern int br_del_bridge(const char *name); 1711da177e4SLinus Torvalds extern void br_cleanup_bridges(void); 1721da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 1731da177e4SLinus Torvalds struct net_device *dev); 1741da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 1751da177e4SLinus Torvalds struct net_device *dev); 1761da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 1771da177e4SLinus Torvalds 1781da177e4SLinus Torvalds /* br_input.c */ 1791da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 1801da177e4SLinus Torvalds extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb); 1811da177e4SLinus Torvalds 1821da177e4SLinus Torvalds /* br_ioctl.c */ 1831da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1841da177e4SLinus Torvalds extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg); 1851da177e4SLinus Torvalds 1861da177e4SLinus Torvalds /* br_netfilter.c */ 1871da177e4SLinus Torvalds extern int br_netfilter_init(void); 1881da177e4SLinus Torvalds extern void br_netfilter_fini(void); 1891da177e4SLinus Torvalds 1901da177e4SLinus Torvalds /* br_stp.c */ 1911da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 1921da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 1931da177e4SLinus Torvalds u16 port_no); 1941da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 1951da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds /* br_stp_if.c */ 1981da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 1991da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 2001da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 2011da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 2021da177e4SLinus Torvalds extern void br_stp_recalculate_bridge_id(struct net_bridge *br); 2031da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 2041da177e4SLinus Torvalds u16 newprio); 2051da177e4SLinus Torvalds extern void br_stp_set_port_priority(struct net_bridge_port *p, 2061da177e4SLinus Torvalds u8 newprio); 2071da177e4SLinus Torvalds extern void br_stp_set_path_cost(struct net_bridge_port *p, 2081da177e4SLinus Torvalds u32 path_cost); 2091da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 2101da177e4SLinus Torvalds 2111da177e4SLinus Torvalds /* br_stp_bpdu.c */ 2121da177e4SLinus Torvalds extern int br_stp_handle_bpdu(struct sk_buff *skb); 2131da177e4SLinus Torvalds 2141da177e4SLinus Torvalds /* br_stp_timer.c */ 2151da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 2161da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 2171da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 2181da177e4SLinus Torvalds 2191da177e4SLinus Torvalds /* br.c */ 2201da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, 2211da177e4SLinus Torvalds unsigned char *addr); 2221da177e4SLinus Torvalds extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds 2251da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 2261da177e4SLinus Torvalds /* br_sysfs_if.c */ 2271da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 2281da177e4SLinus Torvalds extern void br_sysfs_removeif(struct net_bridge_port *p); 2291da177e4SLinus Torvalds extern void br_sysfs_freeif(struct net_bridge_port *p); 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds /* br_sysfs_br.c */ 2321da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 2331da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 2341da177e4SLinus Torvalds 2351da177e4SLinus Torvalds #else 2361da177e4SLinus Torvalds 2371da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 2381da177e4SLinus Torvalds #define br_sysfs_removeif(p) do { } while(0) 2391da177e4SLinus Torvalds #define br_sysfs_freeif(p) kfree(p) 2401da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 2411da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 2421da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 2431da177e4SLinus Torvalds 2441da177e4SLinus Torvalds #endif 245