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; 86ccb1c31aSAmerigo Wang unsigned char state; 87eb1d1641SHerbert Xu }; 88eb1d1641SHerbert Xu 89eb1d1641SHerbert Xu struct net_bridge_mdb_entry 90eb1d1641SHerbert Xu { 91eb1d1641SHerbert Xu struct hlist_node hlist[2]; 92eb1d1641SHerbert Xu struct net_bridge *br; 93e8051688SEric Dumazet struct net_bridge_port_group __rcu *ports; 94eb1d1641SHerbert Xu struct rcu_head rcu; 95eb1d1641SHerbert Xu struct timer_list timer; 968ef2a9a5SYOSHIFUJI Hideaki struct br_ip addr; 978a870178SHerbert Xu bool mglist; 98eb1d1641SHerbert Xu }; 99eb1d1641SHerbert Xu 100eb1d1641SHerbert Xu struct net_bridge_mdb_htable 101eb1d1641SHerbert Xu { 102eb1d1641SHerbert Xu struct hlist_head *mhash; 103eb1d1641SHerbert Xu struct rcu_head rcu; 104eb1d1641SHerbert Xu struct net_bridge_mdb_htable *old; 105eb1d1641SHerbert Xu u32 size; 106eb1d1641SHerbert Xu u32 max; 107eb1d1641SHerbert Xu u32 secret; 108eb1d1641SHerbert Xu u32 ver; 109eb1d1641SHerbert Xu }; 110eb1d1641SHerbert Xu 1111da177e4SLinus Torvalds struct net_bridge_port 1121da177e4SLinus Torvalds { 1131da177e4SLinus Torvalds struct net_bridge *br; 1141da177e4SLinus Torvalds struct net_device *dev; 1151da177e4SLinus Torvalds struct list_head list; 1161da177e4SLinus Torvalds 1171da177e4SLinus Torvalds /* STP */ 1181da177e4SLinus Torvalds u8 priority; 1191da177e4SLinus Torvalds u8 state; 1201da177e4SLinus Torvalds u16 port_no; 1211da177e4SLinus Torvalds unsigned char topology_change_ack; 1221da177e4SLinus Torvalds unsigned char config_pending; 1231da177e4SLinus Torvalds port_id port_id; 1241da177e4SLinus Torvalds port_id designated_port; 1251da177e4SLinus Torvalds bridge_id designated_root; 1261da177e4SLinus Torvalds bridge_id designated_bridge; 1271da177e4SLinus Torvalds u32 path_cost; 1281da177e4SLinus Torvalds u32 designated_cost; 1290c03150eSstephen hemminger unsigned long designated_age; 1301da177e4SLinus Torvalds 1311da177e4SLinus Torvalds struct timer_list forward_delay_timer; 1321da177e4SLinus Torvalds struct timer_list hold_timer; 1331da177e4SLinus Torvalds struct timer_list message_age_timer; 1341da177e4SLinus Torvalds struct kobject kobj; 1351da177e4SLinus Torvalds struct rcu_head rcu; 1363982d3d2SFischer, Anna 1373982d3d2SFischer, Anna unsigned long flags; 1383982d3d2SFischer, Anna #define BR_HAIRPIN_MODE 0x00000001 139a2e01a65Sstephen hemminger #define BR_BPDU_GUARD 0x00000002 1401007dd1aSstephen hemminger #define BR_ROOT_BLOCK 0x00000004 141c2d3babfSDavid S. Miller #define BR_MULTICAST_FAST_LEAVE 0x00000008 142eb1d1641SHerbert Xu 143eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 144eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 145eb1d1641SHerbert Xu unsigned char multicast_router; 146eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 147eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 148eb1d1641SHerbert Xu struct hlist_head mglist; 149eb1d1641SHerbert Xu struct hlist_node rlist; 150eb1d1641SHerbert Xu #endif 151e0f43752SSimon Arlott 152e0f43752SSimon Arlott #ifdef CONFIG_SYSFS 153e0f43752SSimon Arlott char sysfs_name[IFNAMSIZ]; 154e0f43752SSimon Arlott #endif 15591d2c34aSHerbert Xu 15691d2c34aSHerbert Xu #ifdef CONFIG_NET_POLL_CONTROLLER 15791d2c34aSHerbert Xu struct netpoll *np; 15891d2c34aSHerbert Xu #endif 1591da177e4SLinus Torvalds }; 1601da177e4SLinus Torvalds 161f350a0a8SJiri Pirko #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) 162f350a0a8SJiri Pirko 163b5ed54e9Sstephen hemminger static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 164b5ed54e9Sstephen hemminger { 1652469ffd7SJohn Fastabend struct net_bridge_port *port = 1662469ffd7SJohn Fastabend rcu_dereference_rtnl(dev->rx_handler_data); 1672469ffd7SJohn Fastabend 168b5ed54e9Sstephen hemminger return br_port_exists(dev) ? port : NULL; 169b5ed54e9Sstephen hemminger } 170b5ed54e9Sstephen hemminger 171ec1e5610SEric Dumazet static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) 172b5ed54e9Sstephen hemminger { 173ec1e5610SEric Dumazet return br_port_exists(dev) ? 174ec1e5610SEric Dumazet rtnl_dereference(dev->rx_handler_data) : NULL; 175b5ed54e9Sstephen hemminger } 176b5ed54e9Sstephen hemminger 1770eae88f3SEric Dumazet struct br_cpu_netstats { 178406818ffSEric Dumazet u64 rx_packets; 179406818ffSEric Dumazet u64 rx_bytes; 180406818ffSEric Dumazet u64 tx_packets; 181406818ffSEric Dumazet u64 tx_bytes; 182406818ffSEric Dumazet struct u64_stats_sync syncp; 1830eae88f3SEric Dumazet }; 1840eae88f3SEric Dumazet 1851da177e4SLinus Torvalds struct net_bridge 1861da177e4SLinus Torvalds { 1871da177e4SLinus Torvalds spinlock_t lock; 1881da177e4SLinus Torvalds struct list_head port_list; 1891da177e4SLinus Torvalds struct net_device *dev; 19014bb4789Sstephen hemminger 1910eae88f3SEric Dumazet struct br_cpu_netstats __percpu *stats; 1921da177e4SLinus Torvalds spinlock_t hash_lock; 1931da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 1944adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 1954adf0af6SSimon Wunderlich struct rtable fake_rtable; 1964df53d8bSPatrick McHardy bool nf_call_iptables; 1974df53d8bSPatrick McHardy bool nf_call_ip6tables; 1984df53d8bSPatrick McHardy bool nf_call_arptables; 1994adf0af6SSimon Wunderlich #endif 20092c0574fSStephen Hemminger unsigned long flags; 20192c0574fSStephen Hemminger #define BR_SET_MAC_ADDR 0x00000001 2021da177e4SLinus Torvalds 203515853ccSstephen hemminger u16 group_fwd_mask; 204515853ccSstephen hemminger 2051da177e4SLinus Torvalds /* STP */ 2061da177e4SLinus Torvalds bridge_id designated_root; 2071da177e4SLinus Torvalds bridge_id bridge_id; 2081da177e4SLinus Torvalds u32 root_path_cost; 2091da177e4SLinus Torvalds unsigned long max_age; 2101da177e4SLinus Torvalds unsigned long hello_time; 2111da177e4SLinus Torvalds unsigned long forward_delay; 2121da177e4SLinus Torvalds unsigned long bridge_max_age; 2131da177e4SLinus Torvalds unsigned long ageing_time; 2141da177e4SLinus Torvalds unsigned long bridge_hello_time; 2151da177e4SLinus Torvalds unsigned long bridge_forward_delay; 2161da177e4SLinus Torvalds 217fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 2181da177e4SLinus Torvalds u16 root_port; 2199cde0708SStephen Hemminger 2209cde0708SStephen Hemminger enum { 2219cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 2229cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 2239cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 2249cde0708SStephen Hemminger } stp_enabled; 2259cde0708SStephen Hemminger 2261da177e4SLinus Torvalds unsigned char topology_change; 2271da177e4SLinus Torvalds unsigned char topology_change_detected; 2281da177e4SLinus Torvalds 229eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 230eb1d1641SHerbert Xu unsigned char multicast_router; 231eb1d1641SHerbert Xu 232eb1d1641SHerbert Xu u8 multicast_disabled:1; 233c5c23260SHerbert Xu u8 multicast_querier:1; 234eb1d1641SHerbert Xu 235eb1d1641SHerbert Xu u32 hash_elasticity; 236eb1d1641SHerbert Xu u32 hash_max; 237eb1d1641SHerbert Xu 238eb1d1641SHerbert Xu u32 multicast_last_member_count; 239eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 240eb1d1641SHerbert Xu u32 multicast_startup_query_count; 241eb1d1641SHerbert Xu 242eb1d1641SHerbert Xu unsigned long multicast_last_member_interval; 243eb1d1641SHerbert Xu unsigned long multicast_membership_interval; 244eb1d1641SHerbert Xu unsigned long multicast_querier_interval; 245eb1d1641SHerbert Xu unsigned long multicast_query_interval; 246eb1d1641SHerbert Xu unsigned long multicast_query_response_interval; 247eb1d1641SHerbert Xu unsigned long multicast_startup_query_interval; 248eb1d1641SHerbert Xu 249eb1d1641SHerbert Xu spinlock_t multicast_lock; 250e8051688SEric Dumazet struct net_bridge_mdb_htable __rcu *mdb; 251eb1d1641SHerbert Xu struct hlist_head router_list; 252eb1d1641SHerbert Xu 253eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 254eb1d1641SHerbert Xu struct timer_list multicast_querier_timer; 255eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 256eb1d1641SHerbert Xu #endif 257eb1d1641SHerbert Xu 2581da177e4SLinus Torvalds struct timer_list hello_timer; 2591da177e4SLinus Torvalds struct timer_list tcn_timer; 2601da177e4SLinus Torvalds struct timer_list topology_change_timer; 2611da177e4SLinus Torvalds struct timer_list gc_timer; 26243b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 2631da177e4SLinus Torvalds }; 2641da177e4SLinus Torvalds 26568b7c895SHerbert Xu struct br_input_skb_cb { 26668b7c895SHerbert Xu struct net_device *brdev; 26732dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 268eb1d1641SHerbert Xu int igmp; 269eb1d1641SHerbert Xu int mrouters_only; 27032dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 27168b7c895SHerbert Xu }; 27268b7c895SHerbert Xu 27368b7c895SHerbert Xu #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 27468b7c895SHerbert Xu 27532dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 27632dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 27732dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #else 27832dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 27932dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 28032dec5ddSYOSHIFUJI Hideaki / 吉藤英明 28128a16c97Sstephen hemminger #define br_printk(level, br, format, args...) \ 28228a16c97Sstephen hemminger printk(level "%s: " format, (br)->dev->name, ##args) 28328a16c97Sstephen hemminger 28428a16c97Sstephen hemminger #define br_err(__br, format, args...) \ 28528a16c97Sstephen hemminger br_printk(KERN_ERR, __br, format, ##args) 28628a16c97Sstephen hemminger #define br_warn(__br, format, args...) \ 28728a16c97Sstephen hemminger br_printk(KERN_WARNING, __br, format, ##args) 28828a16c97Sstephen hemminger #define br_notice(__br, format, args...) \ 28928a16c97Sstephen hemminger br_printk(KERN_NOTICE, __br, format, ##args) 29028a16c97Sstephen hemminger #define br_info(__br, format, args...) \ 29128a16c97Sstephen hemminger br_printk(KERN_INFO, __br, format, ##args) 29228a16c97Sstephen hemminger 29328a16c97Sstephen hemminger #define br_debug(br, format, args...) \ 29428a16c97Sstephen hemminger pr_debug("%s: " format, (br)->dev->name, ##args) 29528a16c97Sstephen hemminger 2961da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 2971da177e4SLinus Torvalds 2981da177e4SLinus Torvalds /* called under bridge lock */ 2991da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 3001da177e4SLinus Torvalds { 3011da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 3021da177e4SLinus Torvalds } 3031da177e4SLinus Torvalds 3041da177e4SLinus Torvalds /* br_device.c */ 3051da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 3061ce5cce8Sstephen hemminger extern void br_dev_delete(struct net_device *dev, struct list_head *list); 3076fef4c0cSStephen Hemminger extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, 3086fef4c0cSStephen Hemminger struct net_device *dev); 309cfb478daSstephen hemminger #ifdef CONFIG_NET_POLL_CONTROLLER 31091d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 31191d2c34aSHerbert Xu { 31291d2c34aSHerbert Xu return br->dev->npinfo; 31391d2c34aSHerbert Xu } 314cfb478daSstephen hemminger 31591d2c34aSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 31691d2c34aSHerbert Xu struct sk_buff *skb) 31791d2c34aSHerbert Xu { 31891d2c34aSHerbert Xu struct netpoll *np = p->np; 31991d2c34aSHerbert Xu 32091d2c34aSHerbert Xu if (np) 32191d2c34aSHerbert Xu netpoll_send_skb(np, skb); 32291d2c34aSHerbert Xu } 32391d2c34aSHerbert Xu 32447be03a2SAmerigo Wang extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); 32591d2c34aSHerbert Xu extern void br_netpoll_disable(struct net_bridge_port *p); 32691d2c34aSHerbert Xu #else 32791d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 32891d2c34aSHerbert Xu { 32991d2c34aSHerbert Xu return NULL; 33091d2c34aSHerbert Xu } 33191d2c34aSHerbert Xu 3329f70b0fcSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 33391d2c34aSHerbert Xu struct sk_buff *skb) 33491d2c34aSHerbert Xu { 33591d2c34aSHerbert Xu } 33691d2c34aSHerbert Xu 33747be03a2SAmerigo Wang static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) 33891d2c34aSHerbert Xu { 33991d2c34aSHerbert Xu return 0; 34091d2c34aSHerbert Xu } 34191d2c34aSHerbert Xu 34291d2c34aSHerbert Xu static inline void br_netpoll_disable(struct net_bridge_port *p) 34391d2c34aSHerbert Xu { 34491d2c34aSHerbert Xu } 345cfb478daSstephen hemminger #endif 3461da177e4SLinus Torvalds 3471da177e4SLinus Torvalds /* br_fdb.c */ 34887a596e0SAkinobu Mita extern int br_fdb_init(void); 3491da177e4SLinus Torvalds extern void br_fdb_fini(void); 3509cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 3511da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 3521da177e4SLinus Torvalds const unsigned char *newaddr); 35343598813Sstephen hemminger extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 3541da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 3551da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 3561a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 3571da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 3581da177e4SLinus Torvalds const unsigned char *addr); 359da678292SMichał Mirosław extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 3601da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 3611da177e4SLinus Torvalds unsigned long count, unsigned long off); 3621da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 3631da177e4SLinus Torvalds struct net_bridge_port *source, 3641da177e4SLinus Torvalds const unsigned char *addr); 3651da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 3661da177e4SLinus Torvalds struct net_bridge_port *source, 3671da177e4SLinus Torvalds const unsigned char *addr); 36877162022SJohn Fastabend 36977162022SJohn Fastabend extern int br_fdb_delete(struct ndmsg *ndm, 37077162022SJohn Fastabend struct net_device *dev, 3716b6e2725Sstephen hemminger const unsigned char *addr); 372edc7d573Sstephen hemminger extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], 37377162022SJohn Fastabend struct net_device *dev, 3746b6e2725Sstephen hemminger const unsigned char *addr, 37577162022SJohn Fastabend u16 nlh_flags); 37677162022SJohn Fastabend extern int br_fdb_dump(struct sk_buff *skb, 37777162022SJohn Fastabend struct netlink_callback *cb, 37877162022SJohn Fastabend struct net_device *dev, 37977162022SJohn Fastabend int idx); 3801da177e4SLinus Torvalds 3811da177e4SLinus Torvalds /* br_forward.c */ 3821da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 3831da177e4SLinus Torvalds struct sk_buff *skb); 3841da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 3851da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 3867f7708f0SMichael Braun struct sk_buff *skb, struct sk_buff *skb0); 3871da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 388e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 389b33084beSHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, 390b33084beSHerbert Xu struct sk_buff *skb2); 3911da177e4SLinus Torvalds 3921da177e4SLinus Torvalds /* br_if.c */ 393269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 3944aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 3954aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 396712d6954SAlexey Dobriyan extern void br_net_exit(struct net *net); 3971da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 3981da177e4SLinus Torvalds struct net_device *dev); 3991da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 4001da177e4SLinus Torvalds struct net_device *dev); 4011da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 402c8f44affSMichał Mirosław extern netdev_features_t br_features_recompute(struct net_bridge *br, 403c8f44affSMichał Mirosław netdev_features_t features); 4041da177e4SLinus Torvalds 4051da177e4SLinus Torvalds /* br_input.c */ 4061da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 4078a4eb573SJiri Pirko extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); 4081da177e4SLinus Torvalds 4091da177e4SLinus Torvalds /* br_ioctl.c */ 4101da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 411881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 4121da177e4SLinus Torvalds 413eb1d1641SHerbert Xu /* br_multicast.c */ 414eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 4152ce297fcSCong Wang extern unsigned int br_mdb_rehash_seq; 416eb1d1641SHerbert Xu extern int br_multicast_rcv(struct net_bridge *br, 417eb1d1641SHerbert Xu struct net_bridge_port *port, 418eb1d1641SHerbert Xu struct sk_buff *skb); 419eb1d1641SHerbert Xu extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 420eb1d1641SHerbert Xu struct sk_buff *skb); 421eb1d1641SHerbert Xu extern void br_multicast_add_port(struct net_bridge_port *port); 422eb1d1641SHerbert Xu extern void br_multicast_del_port(struct net_bridge_port *port); 423eb1d1641SHerbert Xu extern void br_multicast_enable_port(struct net_bridge_port *port); 424eb1d1641SHerbert Xu extern void br_multicast_disable_port(struct net_bridge_port *port); 425eb1d1641SHerbert Xu extern void br_multicast_init(struct net_bridge *br); 426eb1d1641SHerbert Xu extern void br_multicast_open(struct net_bridge *br); 427eb1d1641SHerbert Xu extern void br_multicast_stop(struct net_bridge *br); 4285cb5e947SHerbert Xu extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4295cb5e947SHerbert Xu struct sk_buff *skb); 4305cb5e947SHerbert Xu extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4315cb5e947SHerbert Xu struct sk_buff *skb, struct sk_buff *skb2); 4320909e117SHerbert Xu extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); 4330909e117SHerbert Xu extern int br_multicast_set_port_router(struct net_bridge_port *p, 4340909e117SHerbert Xu unsigned long val); 435561f1103SHerbert Xu extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); 436c5c23260SHerbert Xu extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 437b195167fSHerbert Xu extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 438cfd56754SCong Wang extern struct net_bridge_mdb_entry *br_mdb_ip_get( 439cfd56754SCong Wang struct net_bridge_mdb_htable *mdb, 440cfd56754SCong Wang struct br_ip *dst); 441cfd56754SCong Wang extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, 442cfd56754SCong Wang struct net_bridge_port *port, struct br_ip *group); 443cfd56754SCong Wang extern void br_multicast_free_pg(struct rcu_head *head); 444cfd56754SCong Wang extern struct net_bridge_port_group *br_multicast_new_port_group( 445cfd56754SCong Wang struct net_bridge_port *port, 446cfd56754SCong Wang struct br_ip *group, 447ccb1c31aSAmerigo Wang struct net_bridge_port_group *next, 448ccb1c31aSAmerigo Wang unsigned char state); 449ee07c6e7SCong Wang extern void br_mdb_init(void); 45063233159SVlad Yasevich extern void br_mdb_uninit(void); 45137a393bcSCong Wang extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, 45237a393bcSCong Wang struct br_ip *group, int type); 45385b35269SSridhar Samudrala 454cfd56754SCong Wang #define mlock_dereference(X, br) \ 455cfd56754SCong Wang rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 456cfd56754SCong Wang 457cfd56754SCong Wang #if IS_ENABLED(CONFIG_IPV6) 458cfd56754SCong Wang #include <net/addrconf.h> 459cfd56754SCong Wang static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) 460cfd56754SCong Wang { 461cfd56754SCong Wang if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) 462cfd56754SCong Wang return 1; 463cfd56754SCong Wang return 0; 464cfd56754SCong Wang } 465cfd56754SCong Wang #endif 466cfd56754SCong Wang 46785b35269SSridhar Samudrala static inline bool br_multicast_is_router(struct net_bridge *br) 46885b35269SSridhar Samudrala { 46985b35269SSridhar Samudrala return br->multicast_router == 2 || 47085b35269SSridhar Samudrala (br->multicast_router == 1 && 47185b35269SSridhar Samudrala timer_pending(&br->multicast_router_timer)); 47285b35269SSridhar Samudrala } 473eb1d1641SHerbert Xu #else 474eb1d1641SHerbert Xu static inline int br_multicast_rcv(struct net_bridge *br, 475eb1d1641SHerbert Xu struct net_bridge_port *port, 476eb1d1641SHerbert Xu struct sk_buff *skb) 477eb1d1641SHerbert Xu { 478eb1d1641SHerbert Xu return 0; 479eb1d1641SHerbert Xu } 480eb1d1641SHerbert Xu 481eb1d1641SHerbert Xu static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 482eb1d1641SHerbert Xu struct sk_buff *skb) 483eb1d1641SHerbert Xu { 484eb1d1641SHerbert Xu return NULL; 485eb1d1641SHerbert Xu } 486eb1d1641SHerbert Xu 487eb1d1641SHerbert Xu static inline void br_multicast_add_port(struct net_bridge_port *port) 488eb1d1641SHerbert Xu { 489eb1d1641SHerbert Xu } 490eb1d1641SHerbert Xu 491eb1d1641SHerbert Xu static inline void br_multicast_del_port(struct net_bridge_port *port) 492eb1d1641SHerbert Xu { 493eb1d1641SHerbert Xu } 494eb1d1641SHerbert Xu 495eb1d1641SHerbert Xu static inline void br_multicast_enable_port(struct net_bridge_port *port) 496eb1d1641SHerbert Xu { 497eb1d1641SHerbert Xu } 498eb1d1641SHerbert Xu 499eb1d1641SHerbert Xu static inline void br_multicast_disable_port(struct net_bridge_port *port) 500eb1d1641SHerbert Xu { 501eb1d1641SHerbert Xu } 502eb1d1641SHerbert Xu 503eb1d1641SHerbert Xu static inline void br_multicast_init(struct net_bridge *br) 504eb1d1641SHerbert Xu { 505eb1d1641SHerbert Xu } 506eb1d1641SHerbert Xu 507eb1d1641SHerbert Xu static inline void br_multicast_open(struct net_bridge *br) 508eb1d1641SHerbert Xu { 509eb1d1641SHerbert Xu } 510eb1d1641SHerbert Xu 511eb1d1641SHerbert Xu static inline void br_multicast_stop(struct net_bridge *br) 512eb1d1641SHerbert Xu { 513eb1d1641SHerbert Xu } 5145cb5e947SHerbert Xu 5155cb5e947SHerbert Xu static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 5165cb5e947SHerbert Xu struct sk_buff *skb) 5175cb5e947SHerbert Xu { 5185cb5e947SHerbert Xu } 5195cb5e947SHerbert Xu 5205cb5e947SHerbert Xu static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 5215cb5e947SHerbert Xu struct sk_buff *skb, 5225cb5e947SHerbert Xu struct sk_buff *skb2) 5235cb5e947SHerbert Xu { 5245cb5e947SHerbert Xu } 525eb1d1641SHerbert Xu static inline bool br_multicast_is_router(struct net_bridge *br) 526eb1d1641SHerbert Xu { 52785b35269SSridhar Samudrala return 0; 528eb1d1641SHerbert Xu } 529fdb184d1SRami Rosen static inline void br_mdb_init(void) 530fdb184d1SRami Rosen { 531fdb184d1SRami Rosen } 532fdb184d1SRami Rosen static inline void br_mdb_uninit(void) 533fdb184d1SRami Rosen { 534fdb184d1SRami Rosen } 53585b35269SSridhar Samudrala #endif 536eb1d1641SHerbert Xu 5371da177e4SLinus Torvalds /* br_netfilter.c */ 538c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 5391da177e4SLinus Torvalds extern int br_netfilter_init(void); 5401da177e4SLinus Torvalds extern void br_netfilter_fini(void); 5414adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 542c0909713SStephen Hemminger #else 543c0909713SStephen Hemminger #define br_netfilter_init() (0) 544c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 5454adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 546c0909713SStephen Hemminger #endif 5471da177e4SLinus Torvalds 5481da177e4SLinus Torvalds /* br_stp.c */ 5491da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 5501da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 5511da177e4SLinus Torvalds u16 port_no); 5521da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 5531da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 5541da177e4SLinus Torvalds 55514f98f25Sstephen hemminger extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); 55614f98f25Sstephen hemminger extern int br_set_hello_time(struct net_bridge *br, unsigned long x); 55714f98f25Sstephen hemminger extern int br_set_max_age(struct net_bridge *br, unsigned long x); 55814f98f25Sstephen hemminger 55914f98f25Sstephen hemminger 5601da177e4SLinus Torvalds /* br_stp_if.c */ 5611da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 5621da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 5639cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 5641da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 5651da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 566edf947f1Sstephen hemminger extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); 5674505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 5681da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 5691da177e4SLinus Torvalds u16 newprio); 57014f98f25Sstephen hemminger extern int br_stp_set_port_priority(struct net_bridge_port *p, 57114f98f25Sstephen hemminger unsigned long newprio); 57214f98f25Sstephen hemminger extern int br_stp_set_path_cost(struct net_bridge_port *p, 57314f98f25Sstephen hemminger unsigned long path_cost); 5741da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 5751da177e4SLinus Torvalds 5761da177e4SLinus Torvalds /* br_stp_bpdu.c */ 5777c85fbf0SPatrick McHardy struct stp_proto; 5787c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 5797c85fbf0SPatrick McHardy struct net_device *dev); 5801da177e4SLinus Torvalds 5811da177e4SLinus Torvalds /* br_stp_timer.c */ 5821da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 5831da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 5841da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 5851da177e4SLinus Torvalds 5861da177e4SLinus Torvalds /* br.c */ 587e6373c4cSIgor Maravić #if IS_ENABLED(CONFIG_ATM_LANE) 588da678292SMichał Mirosław extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 589da678292SMichał Mirosław #endif 5901da177e4SLinus Torvalds 59111dc1f36SStephen Hemminger /* br_netlink.c */ 592149ddd83Sstephen hemminger extern struct rtnl_link_ops br_link_ops; 59332fe21c0SThomas Graf extern int br_netlink_init(void); 59411dc1f36SStephen Hemminger extern void br_netlink_fini(void); 59511dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 596e5a55a89SJohn Fastabend extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); 597e5a55a89SJohn Fastabend extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 598e5a55a89SJohn Fastabend struct net_device *dev); 59911dc1f36SStephen Hemminger 6001da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 6011da177e4SLinus Torvalds /* br_sysfs_if.c */ 60252cf25d0SEmese Revfy extern const struct sysfs_ops brport_sysfs_ops; 6031da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 604e0f43752SSimon Arlott extern int br_sysfs_renameif(struct net_bridge_port *p); 6051da177e4SLinus Torvalds 6061da177e4SLinus Torvalds /* br_sysfs_br.c */ 6071da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 6081da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 6091da177e4SLinus Torvalds 6101da177e4SLinus Torvalds #else 6111da177e4SLinus Torvalds 6120cb2bbbeSLee Jones static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 6130cb2bbbeSLee Jones static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 6140cb2bbbeSLee Jones static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 6150cb2bbbeSLee Jones static inline void br_sysfs_delbr(struct net_device *dev) { return; } 6161da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 6171da177e4SLinus Torvalds 6181da177e4SLinus Torvalds #endif 619