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 { 1612469ffd7SJohn Fastabend struct net_bridge_port *port = 1622469ffd7SJohn Fastabend rcu_dereference_rtnl(dev->rx_handler_data); 1632469ffd7SJohn Fastabend 164b5ed54e9Sstephen hemminger return br_port_exists(dev) ? port : NULL; 165b5ed54e9Sstephen hemminger } 166b5ed54e9Sstephen hemminger 167ec1e5610SEric Dumazet static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) 168b5ed54e9Sstephen hemminger { 169ec1e5610SEric Dumazet return br_port_exists(dev) ? 170ec1e5610SEric Dumazet rtnl_dereference(dev->rx_handler_data) : NULL; 171b5ed54e9Sstephen hemminger } 172b5ed54e9Sstephen hemminger 1730eae88f3SEric Dumazet struct br_cpu_netstats { 174406818ffSEric Dumazet u64 rx_packets; 175406818ffSEric Dumazet u64 rx_bytes; 176406818ffSEric Dumazet u64 tx_packets; 177406818ffSEric Dumazet u64 tx_bytes; 178406818ffSEric Dumazet struct u64_stats_sync syncp; 1790eae88f3SEric Dumazet }; 1800eae88f3SEric Dumazet 1811da177e4SLinus Torvalds struct net_bridge 1821da177e4SLinus Torvalds { 1831da177e4SLinus Torvalds spinlock_t lock; 1841da177e4SLinus Torvalds struct list_head port_list; 1851da177e4SLinus Torvalds struct net_device *dev; 18614bb4789Sstephen hemminger 1870eae88f3SEric Dumazet struct br_cpu_netstats __percpu *stats; 1881da177e4SLinus Torvalds spinlock_t hash_lock; 1891da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 1904adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 1914adf0af6SSimon Wunderlich struct rtable fake_rtable; 1924df53d8bSPatrick McHardy bool nf_call_iptables; 1934df53d8bSPatrick McHardy bool nf_call_ip6tables; 1944df53d8bSPatrick McHardy bool nf_call_arptables; 1954adf0af6SSimon Wunderlich #endif 19692c0574fSStephen Hemminger unsigned long flags; 19792c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 1981da177e4SLinus Torvalds 199515853ccSstephen hemminger u16 group_fwd_mask; 200515853ccSstephen hemminger 2011da177e4SLinus Torvalds /* STP */ 2021da177e4SLinus Torvalds bridge_id designated_root; 2031da177e4SLinus Torvalds bridge_id bridge_id; 2041da177e4SLinus Torvalds u32 root_path_cost; 2051da177e4SLinus Torvalds unsigned long max_age; 2061da177e4SLinus Torvalds unsigned long hello_time; 2071da177e4SLinus Torvalds unsigned long forward_delay; 2081da177e4SLinus Torvalds unsigned long bridge_max_age; 2091da177e4SLinus Torvalds unsigned long ageing_time; 2101da177e4SLinus Torvalds unsigned long bridge_hello_time; 2111da177e4SLinus Torvalds unsigned long bridge_forward_delay; 2121da177e4SLinus Torvalds 213fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 2141da177e4SLinus Torvalds u16 root_port; 2159cde0708SStephen Hemminger 2169cde0708SStephen Hemminger enum { 2179cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 2189cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 2199cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 2209cde0708SStephen Hemminger } stp_enabled; 2219cde0708SStephen Hemminger 2221da177e4SLinus Torvalds unsigned char topology_change; 2231da177e4SLinus Torvalds unsigned char topology_change_detected; 2241da177e4SLinus Torvalds 225eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 226eb1d1641SHerbert Xu unsigned char multicast_router; 227eb1d1641SHerbert Xu 228eb1d1641SHerbert Xu u8 multicast_disabled:1; 229c5c23260SHerbert Xu u8 multicast_querier:1; 230eb1d1641SHerbert Xu 231eb1d1641SHerbert Xu u32 hash_elasticity; 232eb1d1641SHerbert Xu u32 hash_max; 233eb1d1641SHerbert Xu 234eb1d1641SHerbert Xu u32 multicast_last_member_count; 235eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 236eb1d1641SHerbert Xu u32 multicast_startup_query_count; 237eb1d1641SHerbert Xu 238eb1d1641SHerbert Xu unsigned long multicast_last_member_interval; 239eb1d1641SHerbert Xu unsigned long multicast_membership_interval; 240eb1d1641SHerbert Xu unsigned long multicast_querier_interval; 241eb1d1641SHerbert Xu unsigned long multicast_query_interval; 242eb1d1641SHerbert Xu unsigned long multicast_query_response_interval; 243eb1d1641SHerbert Xu unsigned long multicast_startup_query_interval; 244eb1d1641SHerbert Xu 245eb1d1641SHerbert Xu spinlock_t multicast_lock; 246e8051688SEric Dumazet struct net_bridge_mdb_htable __rcu *mdb; 247eb1d1641SHerbert Xu struct hlist_head router_list; 248eb1d1641SHerbert Xu 249eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 250eb1d1641SHerbert Xu struct timer_list multicast_querier_timer; 251eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 252eb1d1641SHerbert Xu #endif 253eb1d1641SHerbert Xu 2541da177e4SLinus Torvalds struct timer_list hello_timer; 2551da177e4SLinus Torvalds struct timer_list tcn_timer; 2561da177e4SLinus Torvalds struct timer_list topology_change_timer; 2571da177e4SLinus Torvalds struct timer_list gc_timer; 25843b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 2591da177e4SLinus Torvalds }; 2601da177e4SLinus Torvalds 26168b7c895SHerbert Xu struct br_input_skb_cb { 26268b7c895SHerbert Xu struct net_device *brdev; 26332dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 264eb1d1641SHerbert Xu int igmp; 265eb1d1641SHerbert Xu int mrouters_only; 26632dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 26768b7c895SHerbert Xu }; 26868b7c895SHerbert Xu 26968b7c895SHerbert Xu #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 27068b7c895SHerbert Xu 27132dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 27232dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 27332dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #else 27432dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 27532dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 27632dec5ddSYOSHIFUJI Hideaki / 吉藤英明 27728a16c97Sstephen hemminger #define br_printk(level, br, format, args...) \ 27828a16c97Sstephen hemminger printk(level "%s: " format, (br)->dev->name, ##args) 27928a16c97Sstephen hemminger 28028a16c97Sstephen hemminger #define br_err(__br, format, args...) \ 28128a16c97Sstephen hemminger br_printk(KERN_ERR, __br, format, ##args) 28228a16c97Sstephen hemminger #define br_warn(__br, format, args...) \ 28328a16c97Sstephen hemminger br_printk(KERN_WARNING, __br, format, ##args) 28428a16c97Sstephen hemminger #define br_notice(__br, format, args...) \ 28528a16c97Sstephen hemminger br_printk(KERN_NOTICE, __br, format, ##args) 28628a16c97Sstephen hemminger #define br_info(__br, format, args...) \ 28728a16c97Sstephen hemminger br_printk(KERN_INFO, __br, format, ##args) 28828a16c97Sstephen hemminger 28928a16c97Sstephen hemminger #define br_debug(br, format, args...) \ 29028a16c97Sstephen hemminger pr_debug("%s: " format, (br)->dev->name, ##args) 29128a16c97Sstephen hemminger 2921da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 2931da177e4SLinus Torvalds 2941da177e4SLinus Torvalds /* called under bridge lock */ 2951da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 2961da177e4SLinus Torvalds { 2971da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 2981da177e4SLinus Torvalds } 2991da177e4SLinus Torvalds 3001da177e4SLinus Torvalds /* br_device.c */ 3011da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 3021ce5cce8Sstephen hemminger extern void br_dev_delete(struct net_device *dev, struct list_head *list); 3036fef4c0cSStephen Hemminger extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, 3046fef4c0cSStephen Hemminger struct net_device *dev); 305cfb478daSstephen hemminger #ifdef CONFIG_NET_POLL_CONTROLLER 30691d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 30791d2c34aSHerbert Xu { 30891d2c34aSHerbert Xu return br->dev->npinfo; 30991d2c34aSHerbert Xu } 310cfb478daSstephen hemminger 31191d2c34aSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 31291d2c34aSHerbert Xu struct sk_buff *skb) 31391d2c34aSHerbert Xu { 31491d2c34aSHerbert Xu struct netpoll *np = p->np; 31591d2c34aSHerbert Xu 31691d2c34aSHerbert Xu if (np) 31791d2c34aSHerbert Xu netpoll_send_skb(np, skb); 31891d2c34aSHerbert Xu } 31991d2c34aSHerbert Xu 32047be03a2SAmerigo Wang extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); 32191d2c34aSHerbert Xu extern void br_netpoll_disable(struct net_bridge_port *p); 32291d2c34aSHerbert Xu #else 32391d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 32491d2c34aSHerbert Xu { 32591d2c34aSHerbert Xu return NULL; 32691d2c34aSHerbert Xu } 32791d2c34aSHerbert Xu 3289f70b0fcSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 32991d2c34aSHerbert Xu struct sk_buff *skb) 33091d2c34aSHerbert Xu { 33191d2c34aSHerbert Xu } 33291d2c34aSHerbert Xu 33347be03a2SAmerigo Wang static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) 33491d2c34aSHerbert Xu { 33591d2c34aSHerbert Xu return 0; 33691d2c34aSHerbert Xu } 33791d2c34aSHerbert Xu 33891d2c34aSHerbert Xu static inline void br_netpoll_disable(struct net_bridge_port *p) 33991d2c34aSHerbert Xu { 34091d2c34aSHerbert Xu } 341cfb478daSstephen hemminger #endif 3421da177e4SLinus Torvalds 3431da177e4SLinus Torvalds /* br_fdb.c */ 34487a596e0SAkinobu Mita extern int br_fdb_init(void); 3451da177e4SLinus Torvalds extern void br_fdb_fini(void); 3469cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 3471da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 3481da177e4SLinus Torvalds const unsigned char *newaddr); 34943598813Sstephen hemminger extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 3501da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 3511da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 3521a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 3531da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 3541da177e4SLinus Torvalds const unsigned char *addr); 355da678292SMichał Mirosław extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 3561da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 3571da177e4SLinus Torvalds unsigned long count, unsigned long off); 3581da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 3591da177e4SLinus Torvalds struct net_bridge_port *source, 3601da177e4SLinus Torvalds const unsigned char *addr); 3611da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 3621da177e4SLinus Torvalds struct net_bridge_port *source, 3631da177e4SLinus Torvalds const unsigned char *addr); 36477162022SJohn Fastabend 36577162022SJohn Fastabend extern int br_fdb_delete(struct ndmsg *ndm, 36677162022SJohn Fastabend struct net_device *dev, 3676b6e2725Sstephen hemminger const unsigned char *addr); 368edc7d573Sstephen hemminger extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], 36977162022SJohn Fastabend struct net_device *dev, 3706b6e2725Sstephen hemminger const unsigned char *addr, 37177162022SJohn Fastabend u16 nlh_flags); 37277162022SJohn Fastabend extern int br_fdb_dump(struct sk_buff *skb, 37377162022SJohn Fastabend struct netlink_callback *cb, 37477162022SJohn Fastabend struct net_device *dev, 37577162022SJohn Fastabend int idx); 3761da177e4SLinus Torvalds 3771da177e4SLinus Torvalds /* br_forward.c */ 3781da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 3791da177e4SLinus Torvalds struct sk_buff *skb); 3801da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 3811da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 3827f7708f0SMichael Braun struct sk_buff *skb, struct sk_buff *skb0); 3831da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 384e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 385b33084beSHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, 386b33084beSHerbert Xu struct sk_buff *skb2); 3871da177e4SLinus Torvalds 3881da177e4SLinus Torvalds /* br_if.c */ 389269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 3904aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 3914aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 392712d6954SAlexey Dobriyan extern void br_net_exit(struct net *net); 3931da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 3941da177e4SLinus Torvalds struct net_device *dev); 3951da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 3961da177e4SLinus Torvalds struct net_device *dev); 3971da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 398c8f44affSMichał Mirosław extern netdev_features_t br_features_recompute(struct net_bridge *br, 399c8f44affSMichał Mirosław netdev_features_t features); 4001da177e4SLinus Torvalds 4011da177e4SLinus Torvalds /* br_input.c */ 4021da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 4038a4eb573SJiri Pirko extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds /* br_ioctl.c */ 4061da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 407881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 4081da177e4SLinus Torvalds 409eb1d1641SHerbert Xu /* br_multicast.c */ 410eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 411eb1d1641SHerbert Xu extern int br_multicast_rcv(struct net_bridge *br, 412eb1d1641SHerbert Xu struct net_bridge_port *port, 413eb1d1641SHerbert Xu struct sk_buff *skb); 414eb1d1641SHerbert Xu extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 415eb1d1641SHerbert Xu struct sk_buff *skb); 416eb1d1641SHerbert Xu extern void br_multicast_add_port(struct net_bridge_port *port); 417eb1d1641SHerbert Xu extern void br_multicast_del_port(struct net_bridge_port *port); 418eb1d1641SHerbert Xu extern void br_multicast_enable_port(struct net_bridge_port *port); 419eb1d1641SHerbert Xu extern void br_multicast_disable_port(struct net_bridge_port *port); 420eb1d1641SHerbert Xu extern void br_multicast_init(struct net_bridge *br); 421eb1d1641SHerbert Xu extern void br_multicast_open(struct net_bridge *br); 422eb1d1641SHerbert Xu extern void br_multicast_stop(struct net_bridge *br); 4235cb5e947SHerbert Xu extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4245cb5e947SHerbert Xu struct sk_buff *skb); 4255cb5e947SHerbert Xu extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4265cb5e947SHerbert Xu struct sk_buff *skb, struct sk_buff *skb2); 4270909e117SHerbert Xu extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); 4280909e117SHerbert Xu extern int br_multicast_set_port_router(struct net_bridge_port *p, 4290909e117SHerbert Xu unsigned long val); 430561f1103SHerbert Xu extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); 431c5c23260SHerbert Xu extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 432b195167fSHerbert Xu extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 43385b35269SSridhar Samudrala 43485b35269SSridhar Samudrala static inline bool br_multicast_is_router(struct net_bridge *br) 43585b35269SSridhar Samudrala { 43685b35269SSridhar Samudrala return br->multicast_router == 2 || 43785b35269SSridhar Samudrala (br->multicast_router == 1 && 43885b35269SSridhar Samudrala timer_pending(&br->multicast_router_timer)); 43985b35269SSridhar Samudrala } 440eb1d1641SHerbert Xu #else 441eb1d1641SHerbert Xu static inline int br_multicast_rcv(struct net_bridge *br, 442eb1d1641SHerbert Xu struct net_bridge_port *port, 443eb1d1641SHerbert Xu struct sk_buff *skb) 444eb1d1641SHerbert Xu { 445eb1d1641SHerbert Xu return 0; 446eb1d1641SHerbert Xu } 447eb1d1641SHerbert Xu 448eb1d1641SHerbert Xu static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 449eb1d1641SHerbert Xu struct sk_buff *skb) 450eb1d1641SHerbert Xu { 451eb1d1641SHerbert Xu return NULL; 452eb1d1641SHerbert Xu } 453eb1d1641SHerbert Xu 454eb1d1641SHerbert Xu static inline void br_multicast_add_port(struct net_bridge_port *port) 455eb1d1641SHerbert Xu { 456eb1d1641SHerbert Xu } 457eb1d1641SHerbert Xu 458eb1d1641SHerbert Xu static inline void br_multicast_del_port(struct net_bridge_port *port) 459eb1d1641SHerbert Xu { 460eb1d1641SHerbert Xu } 461eb1d1641SHerbert Xu 462eb1d1641SHerbert Xu static inline void br_multicast_enable_port(struct net_bridge_port *port) 463eb1d1641SHerbert Xu { 464eb1d1641SHerbert Xu } 465eb1d1641SHerbert Xu 466eb1d1641SHerbert Xu static inline void br_multicast_disable_port(struct net_bridge_port *port) 467eb1d1641SHerbert Xu { 468eb1d1641SHerbert Xu } 469eb1d1641SHerbert Xu 470eb1d1641SHerbert Xu static inline void br_multicast_init(struct net_bridge *br) 471eb1d1641SHerbert Xu { 472eb1d1641SHerbert Xu } 473eb1d1641SHerbert Xu 474eb1d1641SHerbert Xu static inline void br_multicast_open(struct net_bridge *br) 475eb1d1641SHerbert Xu { 476eb1d1641SHerbert Xu } 477eb1d1641SHerbert Xu 478eb1d1641SHerbert Xu static inline void br_multicast_stop(struct net_bridge *br) 479eb1d1641SHerbert Xu { 480eb1d1641SHerbert Xu } 4815cb5e947SHerbert Xu 4825cb5e947SHerbert Xu static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4835cb5e947SHerbert Xu struct sk_buff *skb) 4845cb5e947SHerbert Xu { 4855cb5e947SHerbert Xu } 4865cb5e947SHerbert Xu 4875cb5e947SHerbert Xu static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4885cb5e947SHerbert Xu struct sk_buff *skb, 4895cb5e947SHerbert Xu struct sk_buff *skb2) 4905cb5e947SHerbert Xu { 4915cb5e947SHerbert Xu } 492eb1d1641SHerbert Xu static inline bool br_multicast_is_router(struct net_bridge *br) 493eb1d1641SHerbert Xu { 49485b35269SSridhar Samudrala return 0; 495eb1d1641SHerbert Xu } 49685b35269SSridhar Samudrala #endif 497eb1d1641SHerbert Xu 4981da177e4SLinus Torvalds /* br_netfilter.c */ 499c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 5001da177e4SLinus Torvalds extern int br_netfilter_init(void); 5011da177e4SLinus Torvalds extern void br_netfilter_fini(void); 5024adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 503c0909713SStephen Hemminger #else 504c0909713SStephen Hemminger #define br_netfilter_init() (0) 505c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 5064adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 507c0909713SStephen Hemminger #endif 5081da177e4SLinus Torvalds 5091da177e4SLinus Torvalds /* br_stp.c */ 5101da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 5111da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 5121da177e4SLinus Torvalds u16 port_no); 5131da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 5141da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 5151da177e4SLinus Torvalds 51614f98f25Sstephen hemminger extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); 51714f98f25Sstephen hemminger extern int br_set_hello_time(struct net_bridge *br, unsigned long x); 51814f98f25Sstephen hemminger extern int br_set_max_age(struct net_bridge *br, unsigned long x); 51914f98f25Sstephen hemminger 52014f98f25Sstephen hemminger 5211da177e4SLinus Torvalds /* br_stp_if.c */ 5221da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 5231da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 5249cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 5251da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 5261da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 527edf947f1Sstephen hemminger extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); 5284505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 5291da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 5301da177e4SLinus Torvalds u16 newprio); 53114f98f25Sstephen hemminger extern int br_stp_set_port_priority(struct net_bridge_port *p, 53214f98f25Sstephen hemminger unsigned long newprio); 53314f98f25Sstephen hemminger extern int br_stp_set_path_cost(struct net_bridge_port *p, 53414f98f25Sstephen hemminger unsigned long path_cost); 5351da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 5361da177e4SLinus Torvalds 5371da177e4SLinus Torvalds /* br_stp_bpdu.c */ 5387c85fbf0SPatrick McHardy struct stp_proto; 5397c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 5407c85fbf0SPatrick McHardy struct net_device *dev); 5411da177e4SLinus Torvalds 5421da177e4SLinus Torvalds /* br_stp_timer.c */ 5431da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 5441da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 5451da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 5461da177e4SLinus Torvalds 5471da177e4SLinus Torvalds /* br.c */ 548e6373c4cSIgor Maravić #if IS_ENABLED(CONFIG_ATM_LANE) 549da678292SMichał Mirosław extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 550da678292SMichał Mirosław #endif 5511da177e4SLinus Torvalds 55211dc1f36SStephen Hemminger /* br_netlink.c */ 553149ddd83Sstephen hemminger extern struct rtnl_link_ops br_link_ops; 55432fe21c0SThomas Graf extern int br_netlink_init(void); 55511dc1f36SStephen Hemminger extern void br_netlink_fini(void); 55611dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 557e5a55a89SJohn Fastabend extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); 558e5a55a89SJohn Fastabend extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 559e5a55a89SJohn Fastabend struct net_device *dev); 56011dc1f36SStephen Hemminger 5611da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 5621da177e4SLinus Torvalds /* br_sysfs_if.c */ 56352cf25d0SEmese Revfy extern const struct sysfs_ops brport_sysfs_ops; 5641da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 565e0f43752SSimon Arlott extern int br_sysfs_renameif(struct net_bridge_port *p); 5661da177e4SLinus Torvalds 5671da177e4SLinus Torvalds /* br_sysfs_br.c */ 5681da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 5691da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 5701da177e4SLinus Torvalds 5711da177e4SLinus Torvalds #else 5721da177e4SLinus Torvalds 5730cb2bbbeSLee Jones static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 5740cb2bbbeSLee Jones static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 5750cb2bbbeSLee Jones static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 5760cb2bbbeSLee Jones static inline void br_sysfs_delbr(struct net_device *dev) { return; } 5771da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 5781da177e4SLinus Torvalds 5791da177e4SLinus Torvalds #endif 580