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> 1891d2c34aSHerbert Xu #include <linux/netpoll.h> 19406818ffSEric Dumazet #include <linux/u64_stats_sync.h> 204adf0af6SSimon Wunderlich #include <net/route.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 309cde0708SStephen Hemminger #define BR_VERSION "2.3" 319cde0708SStephen Hemminger 32515853ccSstephen hemminger /* Control of forwarding link local multicast */ 33515853ccSstephen hemminger #define BR_GROUPFWD_DEFAULT 0 34515853ccSstephen hemminger /* Don't allow forwarding control protocols like STP and LLDP */ 35515853ccSstephen hemminger #define BR_GROUPFWD_RESTRICTED 0x4007u 36515853ccSstephen hemminger 379cde0708SStephen Hemminger /* Path to usermode spanning tree program */ 389cde0708SStephen Hemminger #define BR_STP_PROG "/sbin/bridge-stp" 398cbb512eSStephen Hemminger 401da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 411da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 421da177e4SLinus Torvalds typedef __u16 port_id; 431da177e4SLinus Torvalds 441da177e4SLinus Torvalds struct bridge_id 451da177e4SLinus Torvalds { 461da177e4SLinus Torvalds unsigned char prio[2]; 471da177e4SLinus Torvalds unsigned char addr[6]; 481da177e4SLinus Torvalds }; 491da177e4SLinus Torvalds 501da177e4SLinus Torvalds struct mac_addr 511da177e4SLinus Torvalds { 521da177e4SLinus Torvalds unsigned char addr[6]; 531da177e4SLinus Torvalds }; 541da177e4SLinus Torvalds 558ef2a9a5SYOSHIFUJI Hideaki struct br_ip 568ef2a9a5SYOSHIFUJI Hideaki { 578ef2a9a5SYOSHIFUJI Hideaki union { 588ef2a9a5SYOSHIFUJI Hideaki __be32 ip4; 59dfd56b8bSEric Dumazet #if IS_ENABLED(CONFIG_IPV6) 6008b202b6SYOSHIFUJI Hideaki struct in6_addr ip6; 6108b202b6SYOSHIFUJI Hideaki #endif 628ef2a9a5SYOSHIFUJI Hideaki } u; 638ef2a9a5SYOSHIFUJI Hideaki __be16 proto; 648ef2a9a5SYOSHIFUJI Hideaki }; 658ef2a9a5SYOSHIFUJI Hideaki 661da177e4SLinus Torvalds struct net_bridge_fdb_entry 671da177e4SLinus Torvalds { 681da177e4SLinus Torvalds struct hlist_node hlist; 691da177e4SLinus Torvalds struct net_bridge_port *dst; 701da177e4SLinus Torvalds 711da177e4SLinus Torvalds struct rcu_head rcu; 727cd8861aSstephen hemminger unsigned long updated; 737cd8861aSstephen hemminger unsigned long used; 741da177e4SLinus Torvalds mac_addr addr; 751da177e4SLinus Torvalds unsigned char is_local; 761da177e4SLinus Torvalds unsigned char is_static; 771da177e4SLinus Torvalds }; 781da177e4SLinus Torvalds 79eb1d1641SHerbert Xu struct net_bridge_port_group { 80eb1d1641SHerbert Xu struct net_bridge_port *port; 81e8051688SEric Dumazet struct net_bridge_port_group __rcu *next; 82eb1d1641SHerbert Xu struct hlist_node mglist; 83eb1d1641SHerbert Xu struct rcu_head rcu; 84eb1d1641SHerbert Xu struct timer_list timer; 858ef2a9a5SYOSHIFUJI Hideaki struct br_ip addr; 86eb1d1641SHerbert Xu }; 87eb1d1641SHerbert Xu 88eb1d1641SHerbert Xu struct net_bridge_mdb_entry 89eb1d1641SHerbert Xu { 90eb1d1641SHerbert Xu struct hlist_node hlist[2]; 91eb1d1641SHerbert Xu struct net_bridge *br; 92e8051688SEric Dumazet struct net_bridge_port_group __rcu *ports; 93eb1d1641SHerbert Xu struct rcu_head rcu; 94eb1d1641SHerbert Xu struct timer_list timer; 958ef2a9a5SYOSHIFUJI Hideaki struct br_ip addr; 968a870178SHerbert Xu bool mglist; 97eb1d1641SHerbert Xu }; 98eb1d1641SHerbert Xu 99eb1d1641SHerbert Xu struct net_bridge_mdb_htable 100eb1d1641SHerbert Xu { 101eb1d1641SHerbert Xu struct hlist_head *mhash; 102eb1d1641SHerbert Xu struct rcu_head rcu; 103eb1d1641SHerbert Xu struct net_bridge_mdb_htable *old; 104eb1d1641SHerbert Xu u32 size; 105eb1d1641SHerbert Xu u32 max; 106eb1d1641SHerbert Xu u32 secret; 107eb1d1641SHerbert Xu u32 ver; 108eb1d1641SHerbert Xu }; 109eb1d1641SHerbert Xu 1101da177e4SLinus Torvalds struct net_bridge_port 1111da177e4SLinus Torvalds { 1121da177e4SLinus Torvalds struct net_bridge *br; 1131da177e4SLinus Torvalds struct net_device *dev; 1141da177e4SLinus Torvalds struct list_head list; 1151da177e4SLinus Torvalds 1161da177e4SLinus Torvalds /* STP */ 1171da177e4SLinus Torvalds u8 priority; 1181da177e4SLinus Torvalds u8 state; 1191da177e4SLinus Torvalds u16 port_no; 1201da177e4SLinus Torvalds unsigned char topology_change_ack; 1211da177e4SLinus Torvalds unsigned char config_pending; 1221da177e4SLinus Torvalds port_id port_id; 1231da177e4SLinus Torvalds port_id designated_port; 1241da177e4SLinus Torvalds bridge_id designated_root; 1251da177e4SLinus Torvalds bridge_id designated_bridge; 1261da177e4SLinus Torvalds u32 path_cost; 1271da177e4SLinus Torvalds u32 designated_cost; 1280c03150eSstephen hemminger unsigned long designated_age; 1291da177e4SLinus Torvalds 1301da177e4SLinus Torvalds struct timer_list forward_delay_timer; 1311da177e4SLinus Torvalds struct timer_list hold_timer; 1321da177e4SLinus Torvalds struct timer_list message_age_timer; 1331da177e4SLinus Torvalds struct kobject kobj; 1341da177e4SLinus Torvalds struct rcu_head rcu; 1353982d3d2SFischer, Anna 1363982d3d2SFischer, Anna unsigned long flags; 1373982d3d2SFischer, Anna #define BR_HAIRPIN_MODE 0x00000001 138eb1d1641SHerbert Xu 139eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 140eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 141eb1d1641SHerbert Xu unsigned char multicast_router; 142eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 143eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 144eb1d1641SHerbert Xu struct hlist_head mglist; 145eb1d1641SHerbert Xu struct hlist_node rlist; 146eb1d1641SHerbert Xu #endif 147e0f43752SSimon Arlott 148e0f43752SSimon Arlott #ifdef CONFIG_SYSFS 149e0f43752SSimon Arlott char sysfs_name[IFNAMSIZ]; 150e0f43752SSimon Arlott #endif 15191d2c34aSHerbert Xu 15291d2c34aSHerbert Xu #ifdef CONFIG_NET_POLL_CONTROLLER 15391d2c34aSHerbert Xu struct netpoll *np; 15491d2c34aSHerbert Xu #endif 1551da177e4SLinus Torvalds }; 1561da177e4SLinus Torvalds 157f350a0a8SJiri Pirko #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) 158f350a0a8SJiri Pirko 159b5ed54e9Sstephen hemminger static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 160b5ed54e9Sstephen hemminger { 161b5ed54e9Sstephen hemminger struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data); 162b5ed54e9Sstephen hemminger return br_port_exists(dev) ? port : NULL; 163b5ed54e9Sstephen hemminger } 164b5ed54e9Sstephen hemminger 165ec1e5610SEric Dumazet static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) 166b5ed54e9Sstephen hemminger { 167ec1e5610SEric Dumazet return br_port_exists(dev) ? 168ec1e5610SEric Dumazet rtnl_dereference(dev->rx_handler_data) : NULL; 169b5ed54e9Sstephen hemminger } 170b5ed54e9Sstephen hemminger 1710eae88f3SEric Dumazet struct br_cpu_netstats { 172406818ffSEric Dumazet u64 rx_packets; 173406818ffSEric Dumazet u64 rx_bytes; 174406818ffSEric Dumazet u64 tx_packets; 175406818ffSEric Dumazet u64 tx_bytes; 176406818ffSEric Dumazet struct u64_stats_sync syncp; 1770eae88f3SEric Dumazet }; 1780eae88f3SEric Dumazet 1791da177e4SLinus Torvalds struct net_bridge 1801da177e4SLinus Torvalds { 1811da177e4SLinus Torvalds spinlock_t lock; 1821da177e4SLinus Torvalds struct list_head port_list; 1831da177e4SLinus Torvalds struct net_device *dev; 18414bb4789Sstephen hemminger 1850eae88f3SEric Dumazet struct br_cpu_netstats __percpu *stats; 1861da177e4SLinus Torvalds spinlock_t hash_lock; 1871da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 1884adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 1894adf0af6SSimon Wunderlich struct rtable fake_rtable; 1904df53d8bSPatrick McHardy bool nf_call_iptables; 1914df53d8bSPatrick McHardy bool nf_call_ip6tables; 1924df53d8bSPatrick McHardy bool nf_call_arptables; 1934adf0af6SSimon Wunderlich #endif 19492c0574fSStephen Hemminger unsigned long flags; 19592c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 1961da177e4SLinus Torvalds 197515853ccSstephen hemminger u16 group_fwd_mask; 198515853ccSstephen hemminger 1991da177e4SLinus Torvalds /* STP */ 2001da177e4SLinus Torvalds bridge_id designated_root; 2011da177e4SLinus Torvalds bridge_id bridge_id; 2021da177e4SLinus Torvalds u32 root_path_cost; 2031da177e4SLinus Torvalds unsigned long max_age; 2041da177e4SLinus Torvalds unsigned long hello_time; 2051da177e4SLinus Torvalds unsigned long forward_delay; 2061da177e4SLinus Torvalds unsigned long bridge_max_age; 2071da177e4SLinus Torvalds unsigned long ageing_time; 2081da177e4SLinus Torvalds unsigned long bridge_hello_time; 2091da177e4SLinus Torvalds unsigned long bridge_forward_delay; 2101da177e4SLinus Torvalds 211fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 2121da177e4SLinus Torvalds u16 root_port; 2139cde0708SStephen Hemminger 2149cde0708SStephen Hemminger enum { 2159cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 2169cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 2179cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 2189cde0708SStephen Hemminger } stp_enabled; 2199cde0708SStephen Hemminger 2201da177e4SLinus Torvalds unsigned char topology_change; 2211da177e4SLinus Torvalds unsigned char topology_change_detected; 2221da177e4SLinus Torvalds 223eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 224eb1d1641SHerbert Xu unsigned char multicast_router; 225eb1d1641SHerbert Xu 226eb1d1641SHerbert Xu u8 multicast_disabled:1; 227c5c23260SHerbert Xu u8 multicast_querier:1; 228eb1d1641SHerbert Xu 229eb1d1641SHerbert Xu u32 hash_elasticity; 230eb1d1641SHerbert Xu u32 hash_max; 231eb1d1641SHerbert Xu 232eb1d1641SHerbert Xu u32 multicast_last_member_count; 233eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 234eb1d1641SHerbert Xu u32 multicast_startup_query_count; 235eb1d1641SHerbert Xu 236eb1d1641SHerbert Xu unsigned long multicast_last_member_interval; 237eb1d1641SHerbert Xu unsigned long multicast_membership_interval; 238eb1d1641SHerbert Xu unsigned long multicast_querier_interval; 239eb1d1641SHerbert Xu unsigned long multicast_query_interval; 240eb1d1641SHerbert Xu unsigned long multicast_query_response_interval; 241eb1d1641SHerbert Xu unsigned long multicast_startup_query_interval; 242eb1d1641SHerbert Xu 243eb1d1641SHerbert Xu spinlock_t multicast_lock; 244e8051688SEric Dumazet struct net_bridge_mdb_htable __rcu *mdb; 245eb1d1641SHerbert Xu struct hlist_head router_list; 246eb1d1641SHerbert Xu 247eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 248eb1d1641SHerbert Xu struct timer_list multicast_querier_timer; 249eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 250eb1d1641SHerbert Xu #endif 251eb1d1641SHerbert Xu 2521da177e4SLinus Torvalds struct timer_list hello_timer; 2531da177e4SLinus Torvalds struct timer_list tcn_timer; 2541da177e4SLinus Torvalds struct timer_list topology_change_timer; 2551da177e4SLinus Torvalds struct timer_list gc_timer; 25643b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 2571da177e4SLinus Torvalds }; 2581da177e4SLinus Torvalds 25968b7c895SHerbert Xu struct br_input_skb_cb { 26068b7c895SHerbert Xu struct net_device *brdev; 26132dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 262eb1d1641SHerbert Xu int igmp; 263eb1d1641SHerbert Xu int mrouters_only; 26432dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 26568b7c895SHerbert Xu }; 26668b7c895SHerbert Xu 26768b7c895SHerbert Xu #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 26868b7c895SHerbert Xu 26932dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 27032dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 27132dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #else 27232dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 27332dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 27432dec5ddSYOSHIFUJI Hideaki / 吉藤英明 27528a16c97Sstephen hemminger #define br_printk(level, br, format, args...) \ 27628a16c97Sstephen hemminger printk(level "%s: " format, (br)->dev->name, ##args) 27728a16c97Sstephen hemminger 27828a16c97Sstephen hemminger #define br_err(__br, format, args...) \ 27928a16c97Sstephen hemminger br_printk(KERN_ERR, __br, format, ##args) 28028a16c97Sstephen hemminger #define br_warn(__br, format, args...) \ 28128a16c97Sstephen hemminger br_printk(KERN_WARNING, __br, format, ##args) 28228a16c97Sstephen hemminger #define br_notice(__br, format, args...) \ 28328a16c97Sstephen hemminger br_printk(KERN_NOTICE, __br, format, ##args) 28428a16c97Sstephen hemminger #define br_info(__br, format, args...) \ 28528a16c97Sstephen hemminger br_printk(KERN_INFO, __br, format, ##args) 28628a16c97Sstephen hemminger 28728a16c97Sstephen hemminger #define br_debug(br, format, args...) \ 28828a16c97Sstephen hemminger pr_debug("%s: " format, (br)->dev->name, ##args) 28928a16c97Sstephen hemminger 2901da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 291fda93d92SStephen Hemminger extern const u8 br_group_address[ETH_ALEN]; 2921da177e4SLinus Torvalds 2931da177e4SLinus Torvalds /* called under bridge lock */ 2941da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 2951da177e4SLinus Torvalds { 2961da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 2971da177e4SLinus Torvalds } 2981da177e4SLinus Torvalds 2991da177e4SLinus Torvalds /* br_device.c */ 3001da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 3011ce5cce8Sstephen hemminger extern void br_dev_delete(struct net_device *dev, struct list_head *list); 3026fef4c0cSStephen Hemminger extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, 3036fef4c0cSStephen Hemminger struct net_device *dev); 304cfb478daSstephen hemminger #ifdef CONFIG_NET_POLL_CONTROLLER 30591d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 30691d2c34aSHerbert Xu { 30791d2c34aSHerbert Xu return br->dev->npinfo; 30891d2c34aSHerbert Xu } 309cfb478daSstephen hemminger 31091d2c34aSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 31191d2c34aSHerbert Xu struct sk_buff *skb) 31291d2c34aSHerbert Xu { 31391d2c34aSHerbert Xu struct netpoll *np = p->np; 31491d2c34aSHerbert Xu 31591d2c34aSHerbert Xu if (np) 31691d2c34aSHerbert Xu netpoll_send_skb(np, skb); 31791d2c34aSHerbert Xu } 31891d2c34aSHerbert Xu 31991d2c34aSHerbert Xu extern int br_netpoll_enable(struct net_bridge_port *p); 32091d2c34aSHerbert Xu extern void br_netpoll_disable(struct net_bridge_port *p); 32191d2c34aSHerbert Xu #else 32291d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 32391d2c34aSHerbert Xu { 32491d2c34aSHerbert Xu return NULL; 32591d2c34aSHerbert Xu } 32691d2c34aSHerbert Xu 3279f70b0fcSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 32891d2c34aSHerbert Xu struct sk_buff *skb) 32991d2c34aSHerbert Xu { 33091d2c34aSHerbert Xu } 33191d2c34aSHerbert Xu 33291d2c34aSHerbert Xu static inline int br_netpoll_enable(struct net_bridge_port *p) 33391d2c34aSHerbert Xu { 33491d2c34aSHerbert Xu return 0; 33591d2c34aSHerbert Xu } 33691d2c34aSHerbert Xu 33791d2c34aSHerbert Xu static inline void br_netpoll_disable(struct net_bridge_port *p) 33891d2c34aSHerbert Xu { 33991d2c34aSHerbert Xu } 340cfb478daSstephen hemminger #endif 3411da177e4SLinus Torvalds 3421da177e4SLinus Torvalds /* br_fdb.c */ 34387a596e0SAkinobu Mita extern int br_fdb_init(void); 3441da177e4SLinus Torvalds extern void br_fdb_fini(void); 3459cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 3461da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 3471da177e4SLinus Torvalds const unsigned char *newaddr); 34843598813Sstephen hemminger extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 3491da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 3501da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 3511a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 3521da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 3531da177e4SLinus Torvalds const unsigned char *addr); 354da678292SMichał Mirosław extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 3551da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 3561da177e4SLinus Torvalds unsigned long count, unsigned long off); 3571da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 3581da177e4SLinus Torvalds struct net_bridge_port *source, 3591da177e4SLinus Torvalds const unsigned char *addr); 3601da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 3611da177e4SLinus Torvalds struct net_bridge_port *source, 3621da177e4SLinus Torvalds const unsigned char *addr); 363b078f0dfSstephen hemminger extern int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb); 36436fd2b63Sstephen hemminger extern int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 36536fd2b63Sstephen hemminger extern int br_fdb_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg); 3661da177e4SLinus Torvalds 3671da177e4SLinus Torvalds /* br_forward.c */ 3681da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 3691da177e4SLinus Torvalds struct sk_buff *skb); 3701da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 3711da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 3727f7708f0SMichael Braun struct sk_buff *skb, struct sk_buff *skb0); 3731da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 374e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 375b33084beSHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, 376b33084beSHerbert Xu struct sk_buff *skb2); 3771da177e4SLinus Torvalds 3781da177e4SLinus Torvalds /* br_if.c */ 379269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 3804aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 3814aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 382712d6954SAlexey Dobriyan extern void br_net_exit(struct net *net); 3831da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 3841da177e4SLinus Torvalds struct net_device *dev); 3851da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 3861da177e4SLinus Torvalds struct net_device *dev); 3871da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 388c8f44affSMichał Mirosław extern netdev_features_t br_features_recompute(struct net_bridge *br, 389c8f44affSMichał Mirosław netdev_features_t features); 3901da177e4SLinus Torvalds 3911da177e4SLinus Torvalds /* br_input.c */ 3921da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 3938a4eb573SJiri Pirko extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); 3941da177e4SLinus Torvalds 3951da177e4SLinus Torvalds /* br_ioctl.c */ 3961da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 397881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 3981da177e4SLinus Torvalds 399eb1d1641SHerbert Xu /* br_multicast.c */ 400eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 401eb1d1641SHerbert Xu extern int br_multicast_rcv(struct net_bridge *br, 402eb1d1641SHerbert Xu struct net_bridge_port *port, 403eb1d1641SHerbert Xu struct sk_buff *skb); 404eb1d1641SHerbert Xu extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 405eb1d1641SHerbert Xu struct sk_buff *skb); 406eb1d1641SHerbert Xu extern void br_multicast_add_port(struct net_bridge_port *port); 407eb1d1641SHerbert Xu extern void br_multicast_del_port(struct net_bridge_port *port); 408eb1d1641SHerbert Xu extern void br_multicast_enable_port(struct net_bridge_port *port); 409eb1d1641SHerbert Xu extern void br_multicast_disable_port(struct net_bridge_port *port); 410eb1d1641SHerbert Xu extern void br_multicast_init(struct net_bridge *br); 411eb1d1641SHerbert Xu extern void br_multicast_open(struct net_bridge *br); 412eb1d1641SHerbert Xu extern void br_multicast_stop(struct net_bridge *br); 4135cb5e947SHerbert Xu extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4145cb5e947SHerbert Xu struct sk_buff *skb); 4155cb5e947SHerbert Xu extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4165cb5e947SHerbert Xu struct sk_buff *skb, struct sk_buff *skb2); 4170909e117SHerbert Xu extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); 4180909e117SHerbert Xu extern int br_multicast_set_port_router(struct net_bridge_port *p, 4190909e117SHerbert Xu unsigned long val); 420561f1103SHerbert Xu extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); 421c5c23260SHerbert Xu extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 422b195167fSHerbert Xu extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 42385b35269SSridhar Samudrala 42485b35269SSridhar Samudrala static inline bool br_multicast_is_router(struct net_bridge *br) 42585b35269SSridhar Samudrala { 42685b35269SSridhar Samudrala return br->multicast_router == 2 || 42785b35269SSridhar Samudrala (br->multicast_router == 1 && 42885b35269SSridhar Samudrala timer_pending(&br->multicast_router_timer)); 42985b35269SSridhar Samudrala } 430eb1d1641SHerbert Xu #else 431eb1d1641SHerbert Xu static inline int br_multicast_rcv(struct net_bridge *br, 432eb1d1641SHerbert Xu struct net_bridge_port *port, 433eb1d1641SHerbert Xu struct sk_buff *skb) 434eb1d1641SHerbert Xu { 435eb1d1641SHerbert Xu return 0; 436eb1d1641SHerbert Xu } 437eb1d1641SHerbert Xu 438eb1d1641SHerbert Xu static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 439eb1d1641SHerbert Xu struct sk_buff *skb) 440eb1d1641SHerbert Xu { 441eb1d1641SHerbert Xu return NULL; 442eb1d1641SHerbert Xu } 443eb1d1641SHerbert Xu 444eb1d1641SHerbert Xu static inline void br_multicast_add_port(struct net_bridge_port *port) 445eb1d1641SHerbert Xu { 446eb1d1641SHerbert Xu } 447eb1d1641SHerbert Xu 448eb1d1641SHerbert Xu static inline void br_multicast_del_port(struct net_bridge_port *port) 449eb1d1641SHerbert Xu { 450eb1d1641SHerbert Xu } 451eb1d1641SHerbert Xu 452eb1d1641SHerbert Xu static inline void br_multicast_enable_port(struct net_bridge_port *port) 453eb1d1641SHerbert Xu { 454eb1d1641SHerbert Xu } 455eb1d1641SHerbert Xu 456eb1d1641SHerbert Xu static inline void br_multicast_disable_port(struct net_bridge_port *port) 457eb1d1641SHerbert Xu { 458eb1d1641SHerbert Xu } 459eb1d1641SHerbert Xu 460eb1d1641SHerbert Xu static inline void br_multicast_init(struct net_bridge *br) 461eb1d1641SHerbert Xu { 462eb1d1641SHerbert Xu } 463eb1d1641SHerbert Xu 464eb1d1641SHerbert Xu static inline void br_multicast_open(struct net_bridge *br) 465eb1d1641SHerbert Xu { 466eb1d1641SHerbert Xu } 467eb1d1641SHerbert Xu 468eb1d1641SHerbert Xu static inline void br_multicast_stop(struct net_bridge *br) 469eb1d1641SHerbert Xu { 470eb1d1641SHerbert Xu } 4715cb5e947SHerbert Xu 4725cb5e947SHerbert Xu static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4735cb5e947SHerbert Xu struct sk_buff *skb) 4745cb5e947SHerbert Xu { 4755cb5e947SHerbert Xu } 4765cb5e947SHerbert Xu 4775cb5e947SHerbert Xu static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4785cb5e947SHerbert Xu struct sk_buff *skb, 4795cb5e947SHerbert Xu struct sk_buff *skb2) 4805cb5e947SHerbert Xu { 4815cb5e947SHerbert Xu } 482eb1d1641SHerbert Xu static inline bool br_multicast_is_router(struct net_bridge *br) 483eb1d1641SHerbert Xu { 48485b35269SSridhar Samudrala return 0; 485eb1d1641SHerbert Xu } 48685b35269SSridhar Samudrala #endif 487eb1d1641SHerbert Xu 4881da177e4SLinus Torvalds /* br_netfilter.c */ 489c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 4901da177e4SLinus Torvalds extern int br_netfilter_init(void); 4911da177e4SLinus Torvalds extern void br_netfilter_fini(void); 4924adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 493c0909713SStephen Hemminger #else 494c0909713SStephen Hemminger #define br_netfilter_init() (0) 495c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 4964adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 497c0909713SStephen Hemminger #endif 4981da177e4SLinus Torvalds 4991da177e4SLinus Torvalds /* br_stp.c */ 5001da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 5011da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 5021da177e4SLinus Torvalds u16 port_no); 5031da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 5041da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 5051da177e4SLinus Torvalds 50614f98f25Sstephen hemminger extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); 50714f98f25Sstephen hemminger extern int br_set_hello_time(struct net_bridge *br, unsigned long x); 50814f98f25Sstephen hemminger extern int br_set_max_age(struct net_bridge *br, unsigned long x); 50914f98f25Sstephen hemminger 51014f98f25Sstephen hemminger 5111da177e4SLinus Torvalds /* br_stp_if.c */ 5121da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 5131da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 5149cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 5151da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 5161da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 517edf947f1Sstephen hemminger extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); 5184505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 5191da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 5201da177e4SLinus Torvalds u16 newprio); 52114f98f25Sstephen hemminger extern int br_stp_set_port_priority(struct net_bridge_port *p, 52214f98f25Sstephen hemminger unsigned long newprio); 52314f98f25Sstephen hemminger extern int br_stp_set_path_cost(struct net_bridge_port *p, 52414f98f25Sstephen hemminger unsigned long path_cost); 5251da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 5261da177e4SLinus Torvalds 5271da177e4SLinus Torvalds /* br_stp_bpdu.c */ 5287c85fbf0SPatrick McHardy struct stp_proto; 5297c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 5307c85fbf0SPatrick McHardy struct net_device *dev); 5311da177e4SLinus Torvalds 5321da177e4SLinus Torvalds /* br_stp_timer.c */ 5331da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 5341da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 5351da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds /* br.c */ 538e6373c4cSIgor Maravić #if IS_ENABLED(CONFIG_ATM_LANE) 539da678292SMichał Mirosław extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 540da678292SMichał Mirosław #endif 5411da177e4SLinus Torvalds 54211dc1f36SStephen Hemminger /* br_netlink.c */ 54332fe21c0SThomas Graf extern int br_netlink_init(void); 54411dc1f36SStephen Hemminger extern void br_netlink_fini(void); 54511dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 54611dc1f36SStephen Hemminger 5471da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 5481da177e4SLinus Torvalds /* br_sysfs_if.c */ 54952cf25d0SEmese Revfy extern const struct sysfs_ops brport_sysfs_ops; 5501da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 551e0f43752SSimon Arlott extern int br_sysfs_renameif(struct net_bridge_port *p); 5521da177e4SLinus Torvalds 5531da177e4SLinus Torvalds /* br_sysfs_br.c */ 5541da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 5551da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 5561da177e4SLinus Torvalds 5571da177e4SLinus Torvalds #else 5581da177e4SLinus Torvalds 5591da177e4SLinus Torvalds #define br_sysfs_addif(p) (0) 560e0f43752SSimon Arlott #define br_sysfs_renameif(p) (0) 5611da177e4SLinus Torvalds #define br_sysfs_addbr(dev) (0) 5621da177e4SLinus Torvalds #define br_sysfs_delbr(dev) do { } while(0) 5631da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 5641da177e4SLinus Torvalds 5651da177e4SLinus Torvalds #endif 566