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/if_bridge.h> 201da177e4SLinus Torvalds 211da177e4SLinus Torvalds #define BR_HASH_BITS 8 221da177e4SLinus Torvalds #define BR_HASH_SIZE (1 << BR_HASH_BITS) 231da177e4SLinus Torvalds 241da177e4SLinus Torvalds #define BR_HOLD_TIME (1*HZ) 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #define BR_PORT_BITS 10 271da177e4SLinus Torvalds #define BR_MAX_PORTS (1<<BR_PORT_BITS) 281da177e4SLinus Torvalds 2911dc1f36SStephen Hemminger #define BR_VERSION "2.2" 308cbb512eSStephen Hemminger 311da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 321da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 331da177e4SLinus Torvalds typedef __u16 port_id; 341da177e4SLinus Torvalds 351da177e4SLinus Torvalds struct bridge_id 361da177e4SLinus Torvalds { 371da177e4SLinus Torvalds unsigned char prio[2]; 381da177e4SLinus Torvalds unsigned char addr[6]; 391da177e4SLinus Torvalds }; 401da177e4SLinus Torvalds 411da177e4SLinus Torvalds struct mac_addr 421da177e4SLinus Torvalds { 431da177e4SLinus Torvalds unsigned char addr[6]; 441da177e4SLinus Torvalds }; 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds struct net_bridge_fdb_entry 471da177e4SLinus Torvalds { 481da177e4SLinus Torvalds struct hlist_node hlist; 491da177e4SLinus Torvalds struct net_bridge_port *dst; 501da177e4SLinus Torvalds 511da177e4SLinus Torvalds struct rcu_head rcu; 521da177e4SLinus Torvalds atomic_t use_count; 531da177e4SLinus Torvalds unsigned long ageing_timer; 541da177e4SLinus Torvalds mac_addr addr; 551da177e4SLinus Torvalds unsigned char is_local; 561da177e4SLinus Torvalds unsigned char is_static; 571da177e4SLinus Torvalds }; 581da177e4SLinus Torvalds 591da177e4SLinus Torvalds struct net_bridge_port 601da177e4SLinus Torvalds { 611da177e4SLinus Torvalds struct net_bridge *br; 621da177e4SLinus Torvalds struct net_device *dev; 631da177e4SLinus Torvalds struct list_head list; 641da177e4SLinus Torvalds 651da177e4SLinus Torvalds /* STP */ 661da177e4SLinus Torvalds u8 priority; 671da177e4SLinus Torvalds u8 state; 681da177e4SLinus Torvalds u16 port_no; 691da177e4SLinus Torvalds unsigned char topology_change_ack; 701da177e4SLinus Torvalds unsigned char config_pending; 711da177e4SLinus Torvalds port_id port_id; 721da177e4SLinus Torvalds port_id designated_port; 731da177e4SLinus Torvalds bridge_id designated_root; 741da177e4SLinus Torvalds bridge_id designated_bridge; 751da177e4SLinus Torvalds u32 path_cost; 761da177e4SLinus Torvalds u32 designated_cost; 771da177e4SLinus Torvalds 781da177e4SLinus Torvalds struct timer_list forward_delay_timer; 791da177e4SLinus Torvalds struct timer_list hold_timer; 801da177e4SLinus Torvalds struct timer_list message_age_timer; 811da177e4SLinus Torvalds struct kobject kobj; 821da177e4SLinus Torvalds struct rcu_head rcu; 831da177e4SLinus Torvalds }; 841da177e4SLinus Torvalds 851da177e4SLinus Torvalds struct net_bridge 861da177e4SLinus Torvalds { 871da177e4SLinus Torvalds spinlock_t lock; 881da177e4SLinus Torvalds struct list_head port_list; 891da177e4SLinus Torvalds struct net_device *dev; 901da177e4SLinus Torvalds struct net_device_stats statistics; 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; 951da177e4SLinus Torvalds 961da177e4SLinus Torvalds /* STP */ 971da177e4SLinus Torvalds bridge_id designated_root; 981da177e4SLinus Torvalds bridge_id bridge_id; 991da177e4SLinus Torvalds u32 root_path_cost; 1001da177e4SLinus Torvalds unsigned long max_age; 1011da177e4SLinus Torvalds unsigned long hello_time; 1021da177e4SLinus Torvalds unsigned long forward_delay; 1031da177e4SLinus Torvalds unsigned long bridge_max_age; 1041da177e4SLinus Torvalds unsigned long ageing_time; 1051da177e4SLinus Torvalds unsigned long bridge_hello_time; 1061da177e4SLinus Torvalds unsigned long bridge_forward_delay; 1071da177e4SLinus Torvalds 108fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 1091da177e4SLinus Torvalds u16 root_port; 1101da177e4SLinus Torvalds unsigned char stp_enabled; 1111da177e4SLinus Torvalds unsigned char topology_change; 1121da177e4SLinus Torvalds unsigned char topology_change_detected; 1131da177e4SLinus Torvalds 1141da177e4SLinus Torvalds struct timer_list hello_timer; 1151da177e4SLinus Torvalds struct timer_list tcn_timer; 1161da177e4SLinus Torvalds struct timer_list topology_change_timer; 1171da177e4SLinus Torvalds struct timer_list gc_timer; 1181da177e4SLinus Torvalds struct kobject ifobj; 1191da177e4SLinus Torvalds }; 1201da177e4SLinus Torvalds 1211da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 122fda93d92SStephen Hemminger extern const u8 br_group_address[ETH_ALEN]; 1231da177e4SLinus Torvalds 1241da177e4SLinus Torvalds /* called under bridge lock */ 1251da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 1261da177e4SLinus Torvalds { 1271da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 1281da177e4SLinus Torvalds } 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds /* br_device.c */ 1321da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 1331da177e4SLinus Torvalds extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev); 1341da177e4SLinus Torvalds 1351da177e4SLinus Torvalds /* br_fdb.c */ 1361da177e4SLinus Torvalds extern void br_fdb_init(void); 1371da177e4SLinus Torvalds extern void br_fdb_fini(void); 1381da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 1391da177e4SLinus Torvalds const unsigned char *newaddr); 1401da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 1411da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 1421a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 1431da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 1441da177e4SLinus Torvalds const unsigned char *addr); 1451da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br, 1461da177e4SLinus Torvalds unsigned char *addr); 1471da177e4SLinus Torvalds extern void br_fdb_put(struct net_bridge_fdb_entry *ent); 1481da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 1491da177e4SLinus Torvalds unsigned long count, unsigned long off); 1501da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 1511da177e4SLinus Torvalds struct net_bridge_port *source, 1521da177e4SLinus Torvalds const unsigned char *addr); 1531da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 1541da177e4SLinus Torvalds struct net_bridge_port *source, 1551da177e4SLinus Torvalds const unsigned char *addr); 1561da177e4SLinus Torvalds 1571da177e4SLinus Torvalds /* br_forward.c */ 1581da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 1591da177e4SLinus Torvalds struct sk_buff *skb); 1601da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 1611da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 1621da177e4SLinus Torvalds struct sk_buff *skb); 1631da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 1641da177e4SLinus Torvalds extern void br_flood_deliver(struct net_bridge *br, 1651da177e4SLinus Torvalds struct sk_buff *skb, 1661da177e4SLinus Torvalds int clone); 1671da177e4SLinus Torvalds extern void br_flood_forward(struct net_bridge *br, 1681da177e4SLinus Torvalds struct sk_buff *skb, 1691da177e4SLinus Torvalds int clone); 1701da177e4SLinus Torvalds 1711da177e4SLinus Torvalds /* br_if.c */ 172269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 1731da177e4SLinus Torvalds extern int br_add_bridge(const char *name); 1741da177e4SLinus Torvalds extern int br_del_bridge(const char *name); 1751da177e4SLinus Torvalds extern void br_cleanup_bridges(void); 1761da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 1771da177e4SLinus Torvalds struct net_device *dev); 1781da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 1791da177e4SLinus Torvalds struct net_device *dev); 1801da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 18181d35307SStephen Hemminger extern void br_features_recompute(struct net_bridge *br); 1821da177e4SLinus Torvalds 1831da177e4SLinus Torvalds /* br_input.c */ 1841da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 1851da177e4SLinus Torvalds extern int br_handle_frame(struct net_bridge_port *p, struct sk_buff **pskb); 1861da177e4SLinus Torvalds 1871da177e4SLinus Torvalds /* br_ioctl.c */ 1881da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 1891da177e4SLinus Torvalds extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg); 1901da177e4SLinus Torvalds 1911da177e4SLinus Torvalds /* br_netfilter.c */ 192c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 1931da177e4SLinus Torvalds extern int br_netfilter_init(void); 1941da177e4SLinus Torvalds extern void br_netfilter_fini(void); 195c0909713SStephen Hemminger #else 196c0909713SStephen Hemminger #define br_netfilter_init() (0) 197c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 198c0909713SStephen Hemminger #endif 1991da177e4SLinus Torvalds 2001da177e4SLinus Torvalds /* br_stp.c */ 2011da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 2021da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 2031da177e4SLinus Torvalds u16 port_no); 2041da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 2051da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 2061da177e4SLinus Torvalds 2071da177e4SLinus Torvalds /* br_stp_if.c */ 2081da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 2091da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 2101da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 2111da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 2121da177e4SLinus Torvalds extern void br_stp_recalculate_bridge_id(struct net_bridge *br); 2134505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 2141da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 2151da177e4SLinus Torvalds u16 newprio); 2161da177e4SLinus Torvalds extern void br_stp_set_port_priority(struct net_bridge_port *p, 2171da177e4SLinus Torvalds u8 newprio); 2181da177e4SLinus Torvalds extern void br_stp_set_path_cost(struct net_bridge_port *p, 2191da177e4SLinus Torvalds u32 path_cost); 2201da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 2211da177e4SLinus Torvalds 2221da177e4SLinus Torvalds /* br_stp_bpdu.c */ 223cf0f02d0SStephen Hemminger extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev, 224cf0f02d0SStephen Hemminger struct packet_type *pt, struct net_device *orig_dev); 2251da177e4SLinus Torvalds 2261da177e4SLinus Torvalds /* br_stp_timer.c */ 2271da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 2281da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 2291da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 2301da177e4SLinus Torvalds 2311da177e4SLinus Torvalds /* br.c */ 2321da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br, 2331da177e4SLinus Torvalds unsigned char *addr); 2341da177e4SLinus Torvalds extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent); 2351da177e4SLinus Torvalds 2361da177e4SLinus Torvalds 23711dc1f36SStephen Hemminger /* br_netlink.c */ 23832fe21c0SThomas Graf extern int br_netlink_init(void); 23911dc1f36SStephen Hemminger extern void br_netlink_fini(void); 24011dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 24111dc1f36SStephen Hemminger 2421da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 2431da177e4SLinus Torvalds /* br_sysfs_if.c */ 244bab1deeaSStephen Hemminger extern struct sysfs_ops brport_sysfs_ops; 2451da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 2461da177e4SLinus Torvalds 2471da177e4SLinus Torvalds /* br_sysfs_br.c */ 2481da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 2491da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 2501da177e4SLinus Torvalds 2511da177e4SLinus Torvalds #else 2521da177e4SLinus Torvalds 2531da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 2541da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 2551da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 2561da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 2571da177e4SLinus Torvalds 2581da177e4SLinus Torvalds #endif 259