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 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; 843982d3d2SFischer, Anna 853982d3d2SFischer, Anna unsigned long flags; 863982d3d2SFischer, Anna #define BR_HAIRPIN_MODE 0x00000001 871da177e4SLinus Torvalds }; 881da177e4SLinus Torvalds 891da177e4SLinus Torvalds struct net_bridge 901da177e4SLinus Torvalds { 911da177e4SLinus Torvalds spinlock_t lock; 921da177e4SLinus Torvalds struct list_head port_list; 931da177e4SLinus Torvalds struct net_device *dev; 941da177e4SLinus Torvalds spinlock_t hash_lock; 951da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 96edb5e46fSStephen Hemminger unsigned long feature_mask; 974adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 984adf0af6SSimon Wunderlich struct rtable fake_rtable; 994adf0af6SSimon Wunderlich #endif 10092c0574fSStephen Hemminger unsigned long flags; 10192c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 1021da177e4SLinus Torvalds 1031da177e4SLinus Torvalds /* STP */ 1041da177e4SLinus Torvalds bridge_id designated_root; 1051da177e4SLinus Torvalds bridge_id bridge_id; 1061da177e4SLinus Torvalds u32 root_path_cost; 1071da177e4SLinus Torvalds unsigned long max_age; 1081da177e4SLinus Torvalds unsigned long hello_time; 1091da177e4SLinus Torvalds unsigned long forward_delay; 1101da177e4SLinus Torvalds unsigned long bridge_max_age; 1111da177e4SLinus Torvalds unsigned long ageing_time; 1121da177e4SLinus Torvalds unsigned long bridge_hello_time; 1131da177e4SLinus Torvalds unsigned long bridge_forward_delay; 1141da177e4SLinus Torvalds 115fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 1161da177e4SLinus Torvalds u16 root_port; 1179cde0708SStephen Hemminger 1189cde0708SStephen Hemminger enum { 1199cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 1209cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 1219cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 1229cde0708SStephen Hemminger } stp_enabled; 1239cde0708SStephen Hemminger 1241da177e4SLinus Torvalds unsigned char topology_change; 1251da177e4SLinus Torvalds unsigned char topology_change_detected; 1261da177e4SLinus Torvalds 1271da177e4SLinus Torvalds struct timer_list hello_timer; 1281da177e4SLinus Torvalds struct timer_list tcn_timer; 1291da177e4SLinus Torvalds struct timer_list topology_change_timer; 1301da177e4SLinus Torvalds struct timer_list gc_timer; 13143b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 1321da177e4SLinus Torvalds }; 1331da177e4SLinus Torvalds 13468b7c895SHerbert Xu struct br_input_skb_cb { 13568b7c895SHerbert Xu struct net_device *brdev; 13668b7c895SHerbert Xu }; 13768b7c895SHerbert Xu 13868b7c895SHerbert Xu #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 13968b7c895SHerbert Xu 1401da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 141fda93d92SStephen Hemminger extern const u8 br_group_address[ETH_ALEN]; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds /* called under bridge lock */ 1441da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 1451da177e4SLinus Torvalds { 1461da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 1471da177e4SLinus Torvalds } 1481da177e4SLinus Torvalds 1491da177e4SLinus Torvalds /* br_device.c */ 1501da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 1516fef4c0cSStephen Hemminger extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, 1526fef4c0cSStephen Hemminger struct net_device *dev); 1531da177e4SLinus Torvalds 1541da177e4SLinus Torvalds /* br_fdb.c */ 15587a596e0SAkinobu Mita extern int br_fdb_init(void); 1561da177e4SLinus Torvalds extern void br_fdb_fini(void); 1579cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 1581da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 1591da177e4SLinus Torvalds const unsigned char *newaddr); 1601da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 1611da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 1621a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 1631da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 1641da177e4SLinus Torvalds const unsigned char *addr); 165da678292SMichał Mirosław extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 1661da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 1671da177e4SLinus Torvalds unsigned long count, unsigned long off); 1681da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 1691da177e4SLinus Torvalds struct net_bridge_port *source, 1701da177e4SLinus Torvalds const unsigned char *addr); 1711da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 1721da177e4SLinus Torvalds struct net_bridge_port *source, 1731da177e4SLinus Torvalds const unsigned char *addr); 1741da177e4SLinus Torvalds 1751da177e4SLinus Torvalds /* br_forward.c */ 1761da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 1771da177e4SLinus Torvalds struct sk_buff *skb); 1781da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 1791da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 1801da177e4SLinus Torvalds struct sk_buff *skb); 1811da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 182e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 183e081e1e3SHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb); 1841da177e4SLinus Torvalds 1851da177e4SLinus Torvalds /* br_if.c */ 186269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 1874aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 1884aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 189712d6954SAlexey Dobriyan extern void br_net_exit(struct net *net); 1901da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 1911da177e4SLinus Torvalds struct net_device *dev); 1921da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 1931da177e4SLinus Torvalds struct net_device *dev); 1941da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 19581d35307SStephen Hemminger extern void br_features_recompute(struct net_bridge *br); 1961da177e4SLinus Torvalds 1971da177e4SLinus Torvalds /* br_input.c */ 1981da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 1996229e362SStephen Hemminger extern struct sk_buff *br_handle_frame(struct net_bridge_port *p, 2006229e362SStephen Hemminger struct sk_buff *skb); 2011da177e4SLinus Torvalds 2021da177e4SLinus Torvalds /* br_ioctl.c */ 2031da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 204881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 2051da177e4SLinus Torvalds 2061da177e4SLinus Torvalds /* br_netfilter.c */ 207c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 2081da177e4SLinus Torvalds extern int br_netfilter_init(void); 2091da177e4SLinus Torvalds extern void br_netfilter_fini(void); 2104adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 211c0909713SStephen Hemminger #else 212c0909713SStephen Hemminger #define br_netfilter_init() (0) 213c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 2144adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 215c0909713SStephen Hemminger #endif 2161da177e4SLinus Torvalds 2171da177e4SLinus Torvalds /* br_stp.c */ 2181da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 2191da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 2201da177e4SLinus Torvalds u16 port_no); 2211da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 2221da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 2231da177e4SLinus Torvalds 2241da177e4SLinus Torvalds /* br_stp_if.c */ 2251da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 2261da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 2279cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 2281da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 2291da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 2301da177e4SLinus Torvalds extern void br_stp_recalculate_bridge_id(struct net_bridge *br); 2314505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 2321da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 2331da177e4SLinus Torvalds u16 newprio); 2341da177e4SLinus Torvalds extern void br_stp_set_port_priority(struct net_bridge_port *p, 2351da177e4SLinus Torvalds u8 newprio); 2361da177e4SLinus Torvalds extern void br_stp_set_path_cost(struct net_bridge_port *p, 2371da177e4SLinus Torvalds u32 path_cost); 2381da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 2391da177e4SLinus Torvalds 2401da177e4SLinus Torvalds /* br_stp_bpdu.c */ 2417c85fbf0SPatrick McHardy struct stp_proto; 2427c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 2437c85fbf0SPatrick McHardy struct net_device *dev); 2441da177e4SLinus Torvalds 2451da177e4SLinus Torvalds /* br_stp_timer.c */ 2461da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 2471da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 2481da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 2491da177e4SLinus Torvalds 2501da177e4SLinus Torvalds /* br.c */ 251da678292SMichał Mirosław #if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE) 252da678292SMichał Mirosław extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 253da678292SMichał Mirosław #endif 2541da177e4SLinus Torvalds 25511dc1f36SStephen Hemminger /* br_netlink.c */ 25632fe21c0SThomas Graf extern int br_netlink_init(void); 25711dc1f36SStephen Hemminger extern void br_netlink_fini(void); 25811dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 25911dc1f36SStephen Hemminger 2601da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 2611da177e4SLinus Torvalds /* br_sysfs_if.c */ 262bab1deeaSStephen Hemminger extern struct sysfs_ops brport_sysfs_ops; 2631da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 2641da177e4SLinus Torvalds 2651da177e4SLinus Torvalds /* br_sysfs_br.c */ 2661da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 2671da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 2681da177e4SLinus Torvalds 2691da177e4SLinus Torvalds #else 2701da177e4SLinus Torvalds 2711da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 2721da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 2731da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 2741da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 2751da177e4SLinus Torvalds 2761da177e4SLinus Torvalds #endif 277