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> 21243a2e63SVlad Yasevich #include <linux/if_vlan.h> 221da177e4SLinus Torvalds 231da177e4SLinus Torvalds #define BR_HASH_BITS 8 241da177e4SLinus Torvalds #define BR_HASH_SIZE (1 << BR_HASH_BITS) 251da177e4SLinus Torvalds 261da177e4SLinus Torvalds #define BR_HOLD_TIME (1*HZ) 271da177e4SLinus Torvalds 281da177e4SLinus Torvalds #define BR_PORT_BITS 10 291da177e4SLinus Torvalds #define BR_MAX_PORTS (1<<BR_PORT_BITS) 30243a2e63SVlad Yasevich #define BR_VLAN_BITMAP_LEN BITS_TO_LONGS(VLAN_N_VID) 311da177e4SLinus Torvalds 329cde0708SStephen Hemminger #define BR_VERSION "2.3" 339cde0708SStephen Hemminger 34515853ccSstephen hemminger /* Control of forwarding link local multicast */ 35515853ccSstephen hemminger #define BR_GROUPFWD_DEFAULT 0 36515853ccSstephen hemminger /* Don't allow forwarding control protocols like STP and LLDP */ 37515853ccSstephen hemminger #define BR_GROUPFWD_RESTRICTED 0x4007u 38515853ccSstephen hemminger 399cde0708SStephen Hemminger /* Path to usermode spanning tree program */ 409cde0708SStephen Hemminger #define BR_STP_PROG "/sbin/bridge-stp" 418cbb512eSStephen Hemminger 421da177e4SLinus Torvalds typedef struct bridge_id bridge_id; 431da177e4SLinus Torvalds typedef struct mac_addr mac_addr; 441da177e4SLinus Torvalds typedef __u16 port_id; 451da177e4SLinus Torvalds 461da177e4SLinus Torvalds struct bridge_id 471da177e4SLinus Torvalds { 481da177e4SLinus Torvalds unsigned char prio[2]; 491da177e4SLinus Torvalds unsigned char addr[6]; 501da177e4SLinus Torvalds }; 511da177e4SLinus Torvalds 521da177e4SLinus Torvalds struct mac_addr 531da177e4SLinus Torvalds { 541da177e4SLinus Torvalds unsigned char addr[6]; 551da177e4SLinus Torvalds }; 561da177e4SLinus Torvalds 578ef2a9a5SYOSHIFUJI Hideaki struct br_ip 588ef2a9a5SYOSHIFUJI Hideaki { 598ef2a9a5SYOSHIFUJI Hideaki union { 608ef2a9a5SYOSHIFUJI Hideaki __be32 ip4; 61dfd56b8bSEric Dumazet #if IS_ENABLED(CONFIG_IPV6) 6208b202b6SYOSHIFUJI Hideaki struct in6_addr ip6; 6308b202b6SYOSHIFUJI Hideaki #endif 648ef2a9a5SYOSHIFUJI Hideaki } u; 658ef2a9a5SYOSHIFUJI Hideaki __be16 proto; 668ef2a9a5SYOSHIFUJI Hideaki }; 678ef2a9a5SYOSHIFUJI Hideaki 68243a2e63SVlad Yasevich struct net_port_vlans { 69243a2e63SVlad Yasevich u16 port_idx; 70243a2e63SVlad Yasevich union { 71243a2e63SVlad Yasevich struct net_bridge_port *port; 72243a2e63SVlad Yasevich struct net_bridge *br; 73243a2e63SVlad Yasevich } parent; 74243a2e63SVlad Yasevich struct rcu_head rcu; 75243a2e63SVlad Yasevich unsigned long vlan_bitmap[BR_VLAN_BITMAP_LEN]; 76243a2e63SVlad Yasevich }; 77243a2e63SVlad Yasevich 781da177e4SLinus Torvalds struct net_bridge_fdb_entry 791da177e4SLinus Torvalds { 801da177e4SLinus Torvalds struct hlist_node hlist; 811da177e4SLinus Torvalds struct net_bridge_port *dst; 821da177e4SLinus Torvalds 831da177e4SLinus Torvalds struct rcu_head rcu; 847cd8861aSstephen hemminger unsigned long updated; 857cd8861aSstephen hemminger unsigned long used; 861da177e4SLinus Torvalds mac_addr addr; 871da177e4SLinus Torvalds unsigned char is_local; 881da177e4SLinus Torvalds unsigned char is_static; 891da177e4SLinus Torvalds }; 901da177e4SLinus Torvalds 91eb1d1641SHerbert Xu struct net_bridge_port_group { 92eb1d1641SHerbert Xu struct net_bridge_port *port; 93e8051688SEric Dumazet struct net_bridge_port_group __rcu *next; 94eb1d1641SHerbert Xu struct hlist_node mglist; 95eb1d1641SHerbert Xu struct rcu_head rcu; 96eb1d1641SHerbert Xu struct timer_list timer; 978ef2a9a5SYOSHIFUJI Hideaki struct br_ip addr; 98ccb1c31aSAmerigo Wang unsigned char state; 99eb1d1641SHerbert Xu }; 100eb1d1641SHerbert Xu 101eb1d1641SHerbert Xu struct net_bridge_mdb_entry 102eb1d1641SHerbert Xu { 103eb1d1641SHerbert Xu struct hlist_node hlist[2]; 104eb1d1641SHerbert Xu struct net_bridge *br; 105e8051688SEric Dumazet struct net_bridge_port_group __rcu *ports; 106eb1d1641SHerbert Xu struct rcu_head rcu; 107eb1d1641SHerbert Xu struct timer_list timer; 1088ef2a9a5SYOSHIFUJI Hideaki struct br_ip addr; 1098a870178SHerbert Xu bool mglist; 110eb1d1641SHerbert Xu }; 111eb1d1641SHerbert Xu 112eb1d1641SHerbert Xu struct net_bridge_mdb_htable 113eb1d1641SHerbert Xu { 114eb1d1641SHerbert Xu struct hlist_head *mhash; 115eb1d1641SHerbert Xu struct rcu_head rcu; 116eb1d1641SHerbert Xu struct net_bridge_mdb_htable *old; 117eb1d1641SHerbert Xu u32 size; 118eb1d1641SHerbert Xu u32 max; 119eb1d1641SHerbert Xu u32 secret; 120eb1d1641SHerbert Xu u32 ver; 121eb1d1641SHerbert Xu }; 122eb1d1641SHerbert Xu 1231da177e4SLinus Torvalds struct net_bridge_port 1241da177e4SLinus Torvalds { 1251da177e4SLinus Torvalds struct net_bridge *br; 1261da177e4SLinus Torvalds struct net_device *dev; 1271da177e4SLinus Torvalds struct list_head list; 1281da177e4SLinus Torvalds 1291da177e4SLinus Torvalds /* STP */ 1301da177e4SLinus Torvalds u8 priority; 1311da177e4SLinus Torvalds u8 state; 1321da177e4SLinus Torvalds u16 port_no; 1331da177e4SLinus Torvalds unsigned char topology_change_ack; 1341da177e4SLinus Torvalds unsigned char config_pending; 1351da177e4SLinus Torvalds port_id port_id; 1361da177e4SLinus Torvalds port_id designated_port; 1371da177e4SLinus Torvalds bridge_id designated_root; 1381da177e4SLinus Torvalds bridge_id designated_bridge; 1391da177e4SLinus Torvalds u32 path_cost; 1401da177e4SLinus Torvalds u32 designated_cost; 1410c03150eSstephen hemminger unsigned long designated_age; 1421da177e4SLinus Torvalds 1431da177e4SLinus Torvalds struct timer_list forward_delay_timer; 1441da177e4SLinus Torvalds struct timer_list hold_timer; 1451da177e4SLinus Torvalds struct timer_list message_age_timer; 1461da177e4SLinus Torvalds struct kobject kobj; 1471da177e4SLinus Torvalds struct rcu_head rcu; 1483982d3d2SFischer, Anna 1493982d3d2SFischer, Anna unsigned long flags; 1503982d3d2SFischer, Anna #define BR_HAIRPIN_MODE 0x00000001 151a2e01a65Sstephen hemminger #define BR_BPDU_GUARD 0x00000002 1521007dd1aSstephen hemminger #define BR_ROOT_BLOCK 0x00000004 153c2d3babfSDavid S. Miller #define BR_MULTICAST_FAST_LEAVE 0x00000008 154eb1d1641SHerbert Xu 155eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 156eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 157eb1d1641SHerbert Xu unsigned char multicast_router; 158eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 159eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 160eb1d1641SHerbert Xu struct hlist_head mglist; 161eb1d1641SHerbert Xu struct hlist_node rlist; 162eb1d1641SHerbert Xu #endif 163e0f43752SSimon Arlott 164e0f43752SSimon Arlott #ifdef CONFIG_SYSFS 165e0f43752SSimon Arlott char sysfs_name[IFNAMSIZ]; 166e0f43752SSimon Arlott #endif 16791d2c34aSHerbert Xu 16891d2c34aSHerbert Xu #ifdef CONFIG_NET_POLL_CONTROLLER 16991d2c34aSHerbert Xu struct netpoll *np; 17091d2c34aSHerbert Xu #endif 171243a2e63SVlad Yasevich #ifdef CONFIG_BRIDGE_VLAN_FILTERING 172243a2e63SVlad Yasevich struct net_port_vlans __rcu *vlan_info; 173243a2e63SVlad Yasevich #endif 1741da177e4SLinus Torvalds }; 1751da177e4SLinus Torvalds 176f350a0a8SJiri Pirko #define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT) 177f350a0a8SJiri Pirko 178b5ed54e9Sstephen hemminger static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev) 179b5ed54e9Sstephen hemminger { 1802469ffd7SJohn Fastabend struct net_bridge_port *port = 1812469ffd7SJohn Fastabend rcu_dereference_rtnl(dev->rx_handler_data); 1822469ffd7SJohn Fastabend 183b5ed54e9Sstephen hemminger return br_port_exists(dev) ? port : NULL; 184b5ed54e9Sstephen hemminger } 185b5ed54e9Sstephen hemminger 186ec1e5610SEric Dumazet static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev) 187b5ed54e9Sstephen hemminger { 188ec1e5610SEric Dumazet return br_port_exists(dev) ? 189ec1e5610SEric Dumazet rtnl_dereference(dev->rx_handler_data) : NULL; 190b5ed54e9Sstephen hemminger } 191b5ed54e9Sstephen hemminger 1920eae88f3SEric Dumazet struct br_cpu_netstats { 193406818ffSEric Dumazet u64 rx_packets; 194406818ffSEric Dumazet u64 rx_bytes; 195406818ffSEric Dumazet u64 tx_packets; 196406818ffSEric Dumazet u64 tx_bytes; 197406818ffSEric Dumazet struct u64_stats_sync syncp; 1980eae88f3SEric Dumazet }; 1990eae88f3SEric Dumazet 2001da177e4SLinus Torvalds struct net_bridge 2011da177e4SLinus Torvalds { 2021da177e4SLinus Torvalds spinlock_t lock; 2031da177e4SLinus Torvalds struct list_head port_list; 2041da177e4SLinus Torvalds struct net_device *dev; 20514bb4789Sstephen hemminger 2060eae88f3SEric Dumazet struct br_cpu_netstats __percpu *stats; 2071da177e4SLinus Torvalds spinlock_t hash_lock; 2081da177e4SLinus Torvalds struct hlist_head hash[BR_HASH_SIZE]; 2094adf0af6SSimon Wunderlich #ifdef CONFIG_BRIDGE_NETFILTER 2104adf0af6SSimon Wunderlich struct rtable fake_rtable; 2114df53d8bSPatrick McHardy bool nf_call_iptables; 2124df53d8bSPatrick McHardy bool nf_call_ip6tables; 2134df53d8bSPatrick McHardy bool nf_call_arptables; 2144adf0af6SSimon Wunderlich #endif 215515853ccSstephen hemminger u16 group_fwd_mask; 216515853ccSstephen hemminger 2171da177e4SLinus Torvalds /* STP */ 2181da177e4SLinus Torvalds bridge_id designated_root; 2191da177e4SLinus Torvalds bridge_id bridge_id; 2201da177e4SLinus Torvalds u32 root_path_cost; 2211da177e4SLinus Torvalds unsigned long max_age; 2221da177e4SLinus Torvalds unsigned long hello_time; 2231da177e4SLinus Torvalds unsigned long forward_delay; 2241da177e4SLinus Torvalds unsigned long bridge_max_age; 2251da177e4SLinus Torvalds unsigned long ageing_time; 2261da177e4SLinus Torvalds unsigned long bridge_hello_time; 2271da177e4SLinus Torvalds unsigned long bridge_forward_delay; 2281da177e4SLinus Torvalds 229fda93d92SStephen Hemminger u8 group_addr[ETH_ALEN]; 2301da177e4SLinus Torvalds u16 root_port; 2319cde0708SStephen Hemminger 2329cde0708SStephen Hemminger enum { 2339cde0708SStephen Hemminger BR_NO_STP, /* no spanning tree */ 2349cde0708SStephen Hemminger BR_KERNEL_STP, /* old STP in kernel */ 2359cde0708SStephen Hemminger BR_USER_STP, /* new RSTP in userspace */ 2369cde0708SStephen Hemminger } stp_enabled; 2379cde0708SStephen Hemminger 2381da177e4SLinus Torvalds unsigned char topology_change; 2391da177e4SLinus Torvalds unsigned char topology_change_detected; 2401da177e4SLinus Torvalds 241eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 242eb1d1641SHerbert Xu unsigned char multicast_router; 243eb1d1641SHerbert Xu 244eb1d1641SHerbert Xu u8 multicast_disabled:1; 245c5c23260SHerbert Xu u8 multicast_querier:1; 246eb1d1641SHerbert Xu 247eb1d1641SHerbert Xu u32 hash_elasticity; 248eb1d1641SHerbert Xu u32 hash_max; 249eb1d1641SHerbert Xu 250eb1d1641SHerbert Xu u32 multicast_last_member_count; 251eb1d1641SHerbert Xu u32 multicast_startup_queries_sent; 252eb1d1641SHerbert Xu u32 multicast_startup_query_count; 253eb1d1641SHerbert Xu 254eb1d1641SHerbert Xu unsigned long multicast_last_member_interval; 255eb1d1641SHerbert Xu unsigned long multicast_membership_interval; 256eb1d1641SHerbert Xu unsigned long multicast_querier_interval; 257eb1d1641SHerbert Xu unsigned long multicast_query_interval; 258eb1d1641SHerbert Xu unsigned long multicast_query_response_interval; 259eb1d1641SHerbert Xu unsigned long multicast_startup_query_interval; 260eb1d1641SHerbert Xu 261eb1d1641SHerbert Xu spinlock_t multicast_lock; 262e8051688SEric Dumazet struct net_bridge_mdb_htable __rcu *mdb; 263eb1d1641SHerbert Xu struct hlist_head router_list; 264eb1d1641SHerbert Xu 265eb1d1641SHerbert Xu struct timer_list multicast_router_timer; 266eb1d1641SHerbert Xu struct timer_list multicast_querier_timer; 267eb1d1641SHerbert Xu struct timer_list multicast_query_timer; 268eb1d1641SHerbert Xu #endif 269eb1d1641SHerbert Xu 2701da177e4SLinus Torvalds struct timer_list hello_timer; 2711da177e4SLinus Torvalds struct timer_list tcn_timer; 2721da177e4SLinus Torvalds struct timer_list topology_change_timer; 2731da177e4SLinus Torvalds struct timer_list gc_timer; 27443b98c4aSGreg Kroah-Hartman struct kobject *ifobj; 275243a2e63SVlad Yasevich #ifdef CONFIG_BRIDGE_VLAN_FILTERING 276243a2e63SVlad Yasevich u8 vlan_enabled; 277243a2e63SVlad Yasevich struct net_port_vlans __rcu *vlan_info; 278243a2e63SVlad Yasevich #endif 2791da177e4SLinus Torvalds }; 2801da177e4SLinus Torvalds 28168b7c895SHerbert Xu struct br_input_skb_cb { 28268b7c895SHerbert Xu struct net_device *brdev; 28332dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 284eb1d1641SHerbert Xu int igmp; 285eb1d1641SHerbert Xu int mrouters_only; 28632dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 28768b7c895SHerbert Xu }; 28868b7c895SHerbert Xu 28968b7c895SHerbert Xu #define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb) 29068b7c895SHerbert Xu 29132dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 29232dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only) 29332dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #else 29432dec5ddSYOSHIFUJI Hideaki / 吉藤英明 # define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0) 29532dec5ddSYOSHIFUJI Hideaki / 吉藤英明 #endif 29632dec5ddSYOSHIFUJI Hideaki / 吉藤英明 29728a16c97Sstephen hemminger #define br_printk(level, br, format, args...) \ 29828a16c97Sstephen hemminger printk(level "%s: " format, (br)->dev->name, ##args) 29928a16c97Sstephen hemminger 30028a16c97Sstephen hemminger #define br_err(__br, format, args...) \ 30128a16c97Sstephen hemminger br_printk(KERN_ERR, __br, format, ##args) 30228a16c97Sstephen hemminger #define br_warn(__br, format, args...) \ 30328a16c97Sstephen hemminger br_printk(KERN_WARNING, __br, format, ##args) 30428a16c97Sstephen hemminger #define br_notice(__br, format, args...) \ 30528a16c97Sstephen hemminger br_printk(KERN_NOTICE, __br, format, ##args) 30628a16c97Sstephen hemminger #define br_info(__br, format, args...) \ 30728a16c97Sstephen hemminger br_printk(KERN_INFO, __br, format, ##args) 30828a16c97Sstephen hemminger 30928a16c97Sstephen hemminger #define br_debug(br, format, args...) \ 31028a16c97Sstephen hemminger pr_debug("%s: " format, (br)->dev->name, ##args) 31128a16c97Sstephen hemminger 3121da177e4SLinus Torvalds extern struct notifier_block br_device_notifier; 3131da177e4SLinus Torvalds 3141da177e4SLinus Torvalds /* called under bridge lock */ 3151da177e4SLinus Torvalds static inline int br_is_root_bridge(const struct net_bridge *br) 3161da177e4SLinus Torvalds { 3171da177e4SLinus Torvalds return !memcmp(&br->bridge_id, &br->designated_root, 8); 3181da177e4SLinus Torvalds } 3191da177e4SLinus Torvalds 3201da177e4SLinus Torvalds /* br_device.c */ 3211da177e4SLinus Torvalds extern void br_dev_setup(struct net_device *dev); 3221ce5cce8Sstephen hemminger extern void br_dev_delete(struct net_device *dev, struct list_head *list); 3236fef4c0cSStephen Hemminger extern netdev_tx_t br_dev_xmit(struct sk_buff *skb, 3246fef4c0cSStephen Hemminger struct net_device *dev); 325cfb478daSstephen hemminger #ifdef CONFIG_NET_POLL_CONTROLLER 32691d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 32791d2c34aSHerbert Xu { 32891d2c34aSHerbert Xu return br->dev->npinfo; 32991d2c34aSHerbert Xu } 330cfb478daSstephen hemminger 33191d2c34aSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 33291d2c34aSHerbert Xu struct sk_buff *skb) 33391d2c34aSHerbert Xu { 33491d2c34aSHerbert Xu struct netpoll *np = p->np; 33591d2c34aSHerbert Xu 33691d2c34aSHerbert Xu if (np) 33791d2c34aSHerbert Xu netpoll_send_skb(np, skb); 33891d2c34aSHerbert Xu } 33991d2c34aSHerbert Xu 34047be03a2SAmerigo Wang extern int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp); 34191d2c34aSHerbert Xu extern void br_netpoll_disable(struct net_bridge_port *p); 34291d2c34aSHerbert Xu #else 34391d2c34aSHerbert Xu static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br) 34491d2c34aSHerbert Xu { 34591d2c34aSHerbert Xu return NULL; 34691d2c34aSHerbert Xu } 34791d2c34aSHerbert Xu 3489f70b0fcSHerbert Xu static inline void br_netpoll_send_skb(const struct net_bridge_port *p, 34991d2c34aSHerbert Xu struct sk_buff *skb) 35091d2c34aSHerbert Xu { 35191d2c34aSHerbert Xu } 35291d2c34aSHerbert Xu 35347be03a2SAmerigo Wang static inline int br_netpoll_enable(struct net_bridge_port *p, gfp_t gfp) 35491d2c34aSHerbert Xu { 35591d2c34aSHerbert Xu return 0; 35691d2c34aSHerbert Xu } 35791d2c34aSHerbert Xu 35891d2c34aSHerbert Xu static inline void br_netpoll_disable(struct net_bridge_port *p) 35991d2c34aSHerbert Xu { 36091d2c34aSHerbert Xu } 361cfb478daSstephen hemminger #endif 3621da177e4SLinus Torvalds 3631da177e4SLinus Torvalds /* br_fdb.c */ 36487a596e0SAkinobu Mita extern int br_fdb_init(void); 3651da177e4SLinus Torvalds extern void br_fdb_fini(void); 3669cf63747SStephen Hemminger extern void br_fdb_flush(struct net_bridge *br); 3671da177e4SLinus Torvalds extern void br_fdb_changeaddr(struct net_bridge_port *p, 3681da177e4SLinus Torvalds const unsigned char *newaddr); 36943598813Sstephen hemminger extern void br_fdb_change_mac_address(struct net_bridge *br, const u8 *newaddr); 3701da177e4SLinus Torvalds extern void br_fdb_cleanup(unsigned long arg); 3711da177e4SLinus Torvalds extern void br_fdb_delete_by_port(struct net_bridge *br, 3721a620698SStephen Hemminger const struct net_bridge_port *p, int do_all); 3731da177e4SLinus Torvalds extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br, 3741da177e4SLinus Torvalds const unsigned char *addr); 375da678292SMichał Mirosław extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr); 3761da177e4SLinus Torvalds extern int br_fdb_fillbuf(struct net_bridge *br, void *buf, 3771da177e4SLinus Torvalds unsigned long count, unsigned long off); 3781da177e4SLinus Torvalds extern int br_fdb_insert(struct net_bridge *br, 3791da177e4SLinus Torvalds struct net_bridge_port *source, 3801da177e4SLinus Torvalds const unsigned char *addr); 3811da177e4SLinus Torvalds extern void br_fdb_update(struct net_bridge *br, 3821da177e4SLinus Torvalds struct net_bridge_port *source, 3831da177e4SLinus Torvalds const unsigned char *addr); 38477162022SJohn Fastabend 38577162022SJohn Fastabend extern int br_fdb_delete(struct ndmsg *ndm, 38677162022SJohn Fastabend struct net_device *dev, 3876b6e2725Sstephen hemminger const unsigned char *addr); 388edc7d573Sstephen hemminger extern int br_fdb_add(struct ndmsg *nlh, struct nlattr *tb[], 38977162022SJohn Fastabend struct net_device *dev, 3906b6e2725Sstephen hemminger const unsigned char *addr, 39177162022SJohn Fastabend u16 nlh_flags); 39277162022SJohn Fastabend extern int br_fdb_dump(struct sk_buff *skb, 39377162022SJohn Fastabend struct netlink_callback *cb, 39477162022SJohn Fastabend struct net_device *dev, 39577162022SJohn Fastabend int idx); 3961da177e4SLinus Torvalds 3971da177e4SLinus Torvalds /* br_forward.c */ 3981da177e4SLinus Torvalds extern void br_deliver(const struct net_bridge_port *to, 3991da177e4SLinus Torvalds struct sk_buff *skb); 4001da177e4SLinus Torvalds extern int br_dev_queue_push_xmit(struct sk_buff *skb); 4011da177e4SLinus Torvalds extern void br_forward(const struct net_bridge_port *to, 4027f7708f0SMichael Braun struct sk_buff *skb, struct sk_buff *skb0); 4031da177e4SLinus Torvalds extern int br_forward_finish(struct sk_buff *skb); 404e081e1e3SHerbert Xu extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb); 405b33084beSHerbert Xu extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb, 406b33084beSHerbert Xu struct sk_buff *skb2); 4071da177e4SLinus Torvalds 4081da177e4SLinus Torvalds /* br_if.c */ 409269def7cSStephen Hemminger extern void br_port_carrier_check(struct net_bridge_port *p); 4104aa678baSAlexey Dobriyan extern int br_add_bridge(struct net *net, const char *name); 4114aa678baSAlexey Dobriyan extern int br_del_bridge(struct net *net, const char *name); 412712d6954SAlexey Dobriyan extern void br_net_exit(struct net *net); 4131da177e4SLinus Torvalds extern int br_add_if(struct net_bridge *br, 4141da177e4SLinus Torvalds struct net_device *dev); 4151da177e4SLinus Torvalds extern int br_del_if(struct net_bridge *br, 4161da177e4SLinus Torvalds struct net_device *dev); 4171da177e4SLinus Torvalds extern int br_min_mtu(const struct net_bridge *br); 418c8f44affSMichał Mirosław extern netdev_features_t br_features_recompute(struct net_bridge *br, 419c8f44affSMichał Mirosław netdev_features_t features); 4201da177e4SLinus Torvalds 4211da177e4SLinus Torvalds /* br_input.c */ 4221da177e4SLinus Torvalds extern int br_handle_frame_finish(struct sk_buff *skb); 4238a4eb573SJiri Pirko extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb); 4241da177e4SLinus Torvalds 4251da177e4SLinus Torvalds /* br_ioctl.c */ 4261da177e4SLinus Torvalds extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd); 427881d966bSEric W. Biederman extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg); 4281da177e4SLinus Torvalds 429eb1d1641SHerbert Xu /* br_multicast.c */ 430eb1d1641SHerbert Xu #ifdef CONFIG_BRIDGE_IGMP_SNOOPING 4312ce297fcSCong Wang extern unsigned int br_mdb_rehash_seq; 432eb1d1641SHerbert Xu extern int br_multicast_rcv(struct net_bridge *br, 433eb1d1641SHerbert Xu struct net_bridge_port *port, 434eb1d1641SHerbert Xu struct sk_buff *skb); 435eb1d1641SHerbert Xu extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 436eb1d1641SHerbert Xu struct sk_buff *skb); 437eb1d1641SHerbert Xu extern void br_multicast_add_port(struct net_bridge_port *port); 438eb1d1641SHerbert Xu extern void br_multicast_del_port(struct net_bridge_port *port); 439eb1d1641SHerbert Xu extern void br_multicast_enable_port(struct net_bridge_port *port); 440eb1d1641SHerbert Xu extern void br_multicast_disable_port(struct net_bridge_port *port); 441eb1d1641SHerbert Xu extern void br_multicast_init(struct net_bridge *br); 442eb1d1641SHerbert Xu extern void br_multicast_open(struct net_bridge *br); 443eb1d1641SHerbert Xu extern void br_multicast_stop(struct net_bridge *br); 4445cb5e947SHerbert Xu extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 4455cb5e947SHerbert Xu struct sk_buff *skb); 4465cb5e947SHerbert Xu extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 4475cb5e947SHerbert Xu struct sk_buff *skb, struct sk_buff *skb2); 4480909e117SHerbert Xu extern int br_multicast_set_router(struct net_bridge *br, unsigned long val); 4490909e117SHerbert Xu extern int br_multicast_set_port_router(struct net_bridge_port *p, 4500909e117SHerbert Xu unsigned long val); 451561f1103SHerbert Xu extern int br_multicast_toggle(struct net_bridge *br, unsigned long val); 452c5c23260SHerbert Xu extern int br_multicast_set_querier(struct net_bridge *br, unsigned long val); 453b195167fSHerbert Xu extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val); 454cfd56754SCong Wang extern struct net_bridge_mdb_entry *br_mdb_ip_get( 455cfd56754SCong Wang struct net_bridge_mdb_htable *mdb, 456cfd56754SCong Wang struct br_ip *dst); 457cfd56754SCong Wang extern struct net_bridge_mdb_entry *br_multicast_new_group(struct net_bridge *br, 458cfd56754SCong Wang struct net_bridge_port *port, struct br_ip *group); 459cfd56754SCong Wang extern void br_multicast_free_pg(struct rcu_head *head); 460cfd56754SCong Wang extern struct net_bridge_port_group *br_multicast_new_port_group( 461cfd56754SCong Wang struct net_bridge_port *port, 462cfd56754SCong Wang struct br_ip *group, 463ccb1c31aSAmerigo Wang struct net_bridge_port_group *next, 464ccb1c31aSAmerigo Wang unsigned char state); 465ee07c6e7SCong Wang extern void br_mdb_init(void); 46663233159SVlad Yasevich extern void br_mdb_uninit(void); 46737a393bcSCong Wang extern void br_mdb_notify(struct net_device *dev, struct net_bridge_port *port, 46837a393bcSCong Wang struct br_ip *group, int type); 46985b35269SSridhar Samudrala 470cfd56754SCong Wang #define mlock_dereference(X, br) \ 471cfd56754SCong Wang rcu_dereference_protected(X, lockdep_is_held(&br->multicast_lock)) 472cfd56754SCong Wang 473cfd56754SCong Wang #if IS_ENABLED(CONFIG_IPV6) 474cfd56754SCong Wang #include <net/addrconf.h> 475cfd56754SCong Wang static inline int ipv6_is_transient_multicast(const struct in6_addr *addr) 476cfd56754SCong Wang { 477cfd56754SCong Wang if (ipv6_addr_is_multicast(addr) && IPV6_ADDR_MC_FLAG_TRANSIENT(addr)) 478cfd56754SCong Wang return 1; 479cfd56754SCong Wang return 0; 480cfd56754SCong Wang } 481cfd56754SCong Wang #endif 482cfd56754SCong Wang 48385b35269SSridhar Samudrala static inline bool br_multicast_is_router(struct net_bridge *br) 48485b35269SSridhar Samudrala { 48585b35269SSridhar Samudrala return br->multicast_router == 2 || 48685b35269SSridhar Samudrala (br->multicast_router == 1 && 48785b35269SSridhar Samudrala timer_pending(&br->multicast_router_timer)); 48885b35269SSridhar Samudrala } 489eb1d1641SHerbert Xu #else 490eb1d1641SHerbert Xu static inline int br_multicast_rcv(struct net_bridge *br, 491eb1d1641SHerbert Xu struct net_bridge_port *port, 492eb1d1641SHerbert Xu struct sk_buff *skb) 493eb1d1641SHerbert Xu { 494eb1d1641SHerbert Xu return 0; 495eb1d1641SHerbert Xu } 496eb1d1641SHerbert Xu 497eb1d1641SHerbert Xu static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br, 498eb1d1641SHerbert Xu struct sk_buff *skb) 499eb1d1641SHerbert Xu { 500eb1d1641SHerbert Xu return NULL; 501eb1d1641SHerbert Xu } 502eb1d1641SHerbert Xu 503eb1d1641SHerbert Xu static inline void br_multicast_add_port(struct net_bridge_port *port) 504eb1d1641SHerbert Xu { 505eb1d1641SHerbert Xu } 506eb1d1641SHerbert Xu 507eb1d1641SHerbert Xu static inline void br_multicast_del_port(struct net_bridge_port *port) 508eb1d1641SHerbert Xu { 509eb1d1641SHerbert Xu } 510eb1d1641SHerbert Xu 511eb1d1641SHerbert Xu static inline void br_multicast_enable_port(struct net_bridge_port *port) 512eb1d1641SHerbert Xu { 513eb1d1641SHerbert Xu } 514eb1d1641SHerbert Xu 515eb1d1641SHerbert Xu static inline void br_multicast_disable_port(struct net_bridge_port *port) 516eb1d1641SHerbert Xu { 517eb1d1641SHerbert Xu } 518eb1d1641SHerbert Xu 519eb1d1641SHerbert Xu static inline void br_multicast_init(struct net_bridge *br) 520eb1d1641SHerbert Xu { 521eb1d1641SHerbert Xu } 522eb1d1641SHerbert Xu 523eb1d1641SHerbert Xu static inline void br_multicast_open(struct net_bridge *br) 524eb1d1641SHerbert Xu { 525eb1d1641SHerbert Xu } 526eb1d1641SHerbert Xu 527eb1d1641SHerbert Xu static inline void br_multicast_stop(struct net_bridge *br) 528eb1d1641SHerbert Xu { 529eb1d1641SHerbert Xu } 5305cb5e947SHerbert Xu 5315cb5e947SHerbert Xu static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst, 5325cb5e947SHerbert Xu struct sk_buff *skb) 5335cb5e947SHerbert Xu { 5345cb5e947SHerbert Xu } 5355cb5e947SHerbert Xu 5365cb5e947SHerbert Xu static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst, 5375cb5e947SHerbert Xu struct sk_buff *skb, 5385cb5e947SHerbert Xu struct sk_buff *skb2) 5395cb5e947SHerbert Xu { 5405cb5e947SHerbert Xu } 541eb1d1641SHerbert Xu static inline bool br_multicast_is_router(struct net_bridge *br) 542eb1d1641SHerbert Xu { 54385b35269SSridhar Samudrala return 0; 544eb1d1641SHerbert Xu } 545fdb184d1SRami Rosen static inline void br_mdb_init(void) 546fdb184d1SRami Rosen { 547fdb184d1SRami Rosen } 548fdb184d1SRami Rosen static inline void br_mdb_uninit(void) 549fdb184d1SRami Rosen { 550fdb184d1SRami Rosen } 55185b35269SSridhar Samudrala #endif 552eb1d1641SHerbert Xu 553243a2e63SVlad Yasevich /* br_vlan.c */ 554243a2e63SVlad Yasevich #ifdef CONFIG_BRIDGE_VLAN_FILTERING 555a37b85c9SVlad Yasevich extern bool br_allowed_ingress(struct net_bridge *br, struct net_port_vlans *v, 556a37b85c9SVlad Yasevich struct sk_buff *skb); 55785f46c6bSVlad Yasevich extern bool br_allowed_egress(struct net_bridge *br, 55885f46c6bSVlad Yasevich const struct net_port_vlans *v, 55985f46c6bSVlad Yasevich const struct sk_buff *skb); 560243a2e63SVlad Yasevich extern int br_vlan_add(struct net_bridge *br, u16 vid); 561243a2e63SVlad Yasevich extern int br_vlan_delete(struct net_bridge *br, u16 vid); 562243a2e63SVlad Yasevich extern void br_vlan_flush(struct net_bridge *br); 563243a2e63SVlad Yasevich extern int br_vlan_filter_toggle(struct net_bridge *br, unsigned long val); 564243a2e63SVlad Yasevich extern int nbp_vlan_add(struct net_bridge_port *port, u16 vid); 565243a2e63SVlad Yasevich extern int nbp_vlan_delete(struct net_bridge_port *port, u16 vid); 566243a2e63SVlad Yasevich extern void nbp_vlan_flush(struct net_bridge_port *port); 567a37b85c9SVlad Yasevich 568a37b85c9SVlad Yasevich static inline struct net_port_vlans *br_get_vlan_info( 569a37b85c9SVlad Yasevich const struct net_bridge *br) 570a37b85c9SVlad Yasevich { 571a37b85c9SVlad Yasevich return rcu_dereference(br->vlan_info); 572a37b85c9SVlad Yasevich } 573a37b85c9SVlad Yasevich 574a37b85c9SVlad Yasevich static inline struct net_port_vlans *nbp_get_vlan_info( 575a37b85c9SVlad Yasevich const struct net_bridge_port *p) 576a37b85c9SVlad Yasevich { 577a37b85c9SVlad Yasevich return rcu_dereference(p->vlan_info); 578a37b85c9SVlad Yasevich } 579a37b85c9SVlad Yasevich 580a37b85c9SVlad Yasevich /* Since bridge now depends on 8021Q module, but the time bridge sees the 581a37b85c9SVlad Yasevich * skb, the vlan tag will always be present if the frame was tagged. 582a37b85c9SVlad Yasevich */ 583a37b85c9SVlad Yasevich static inline int br_vlan_get_tag(const struct sk_buff *skb, u16 *vid) 584a37b85c9SVlad Yasevich { 585a37b85c9SVlad Yasevich int err = 0; 586a37b85c9SVlad Yasevich 587a37b85c9SVlad Yasevich if (vlan_tx_tag_present(skb)) 588a37b85c9SVlad Yasevich *vid = vlan_tx_tag_get(skb) & VLAN_VID_MASK; 589a37b85c9SVlad Yasevich else { 590a37b85c9SVlad Yasevich *vid = 0; 591a37b85c9SVlad Yasevich err = -EINVAL; 592a37b85c9SVlad Yasevich } 593a37b85c9SVlad Yasevich 594a37b85c9SVlad Yasevich return err; 595a37b85c9SVlad Yasevich } 596243a2e63SVlad Yasevich #else 597a37b85c9SVlad Yasevich static inline bool br_allowed_ingress(struct net_bridge *br, 598a37b85c9SVlad Yasevich struct net_port_vlans *v, 599a37b85c9SVlad Yasevich struct sk_buff *skb) 600a37b85c9SVlad Yasevich { 601a37b85c9SVlad Yasevich return true; 602a37b85c9SVlad Yasevich } 603a37b85c9SVlad Yasevich 60485f46c6bSVlad Yasevich static inline bool br_allowed_egress(struct net_bridge *br, 60585f46c6bSVlad Yasevich const struct net_port_vlans *v, 60685f46c6bSVlad Yasevich const struct sk_buff *skb) 60785f46c6bSVlad Yasevich { 60885f46c6bSVlad Yasevich return true; 60985f46c6bSVlad Yasevich } 61085f46c6bSVlad Yasevich 611243a2e63SVlad Yasevich static inline int br_vlan_add(struct net_bridge *br, u16 vid) 612243a2e63SVlad Yasevich { 613243a2e63SVlad Yasevich return -EOPNOTSUPP; 614243a2e63SVlad Yasevich } 615243a2e63SVlad Yasevich 616243a2e63SVlad Yasevich static inline int br_vlan_delete(struct net_bridge *br, u16 vid) 617243a2e63SVlad Yasevich { 618243a2e63SVlad Yasevich return -EOPNOTSUPP; 619243a2e63SVlad Yasevich } 620243a2e63SVlad Yasevich 621243a2e63SVlad Yasevich static inline void br_vlan_flush(struct net_bridge *br) 622243a2e63SVlad Yasevich { 623243a2e63SVlad Yasevich } 624243a2e63SVlad Yasevich 625243a2e63SVlad Yasevich static inline int nbp_vlan_add(struct net_bridge_port *port, u16 vid) 626243a2e63SVlad Yasevich { 627243a2e63SVlad Yasevich return -EOPNOTSUPP; 628243a2e63SVlad Yasevich } 629243a2e63SVlad Yasevich 630243a2e63SVlad Yasevich static inline int nbp_vlan_delete(struct net_bridge_port *port, u16 vid) 631243a2e63SVlad Yasevich { 632243a2e63SVlad Yasevich return -EOPNOTSUPP; 633243a2e63SVlad Yasevich } 634243a2e63SVlad Yasevich 635243a2e63SVlad Yasevich static inline void nbp_vlan_flush(struct net_bridge_port *port) 636243a2e63SVlad Yasevich { 637243a2e63SVlad Yasevich } 638243a2e63SVlad Yasevich 639a37b85c9SVlad Yasevich static inline struct net_port_vlans *br_get_vlan_info( 640a37b85c9SVlad Yasevich const struct net_bridge *br) 641a37b85c9SVlad Yasevich { 642a37b85c9SVlad Yasevich return NULL; 643a37b85c9SVlad Yasevich } 644a37b85c9SVlad Yasevich static inline struct net_port_vlans *nbp_get_vlan_info( 645a37b85c9SVlad Yasevich const struct net_bridge_port *p) 646a37b85c9SVlad Yasevich { 647a37b85c9SVlad Yasevich return NULL; 648a37b85c9SVlad Yasevich } 649a37b85c9SVlad Yasevich 650a37b85c9SVlad Yasevich static inline u16 br_vlan_get_tag(const struct sk_buff *skb) 651a37b85c9SVlad Yasevich { 652a37b85c9SVlad Yasevich return 0; 653a37b85c9SVlad Yasevich } 654243a2e63SVlad Yasevich #endif 655243a2e63SVlad Yasevich 6561da177e4SLinus Torvalds /* br_netfilter.c */ 657c0909713SStephen Hemminger #ifdef CONFIG_BRIDGE_NETFILTER 6581da177e4SLinus Torvalds extern int br_netfilter_init(void); 6591da177e4SLinus Torvalds extern void br_netfilter_fini(void); 6604adf0af6SSimon Wunderlich extern void br_netfilter_rtable_init(struct net_bridge *); 661c0909713SStephen Hemminger #else 662c0909713SStephen Hemminger #define br_netfilter_init() (0) 663c0909713SStephen Hemminger #define br_netfilter_fini() do { } while(0) 6644adf0af6SSimon Wunderlich #define br_netfilter_rtable_init(x) 665c0909713SStephen Hemminger #endif 6661da177e4SLinus Torvalds 6671da177e4SLinus Torvalds /* br_stp.c */ 6681da177e4SLinus Torvalds extern void br_log_state(const struct net_bridge_port *p); 6691da177e4SLinus Torvalds extern struct net_bridge_port *br_get_port(struct net_bridge *br, 6701da177e4SLinus Torvalds u16 port_no); 6711da177e4SLinus Torvalds extern void br_init_port(struct net_bridge_port *p); 6721da177e4SLinus Torvalds extern void br_become_designated_port(struct net_bridge_port *p); 6731da177e4SLinus Torvalds 67414f98f25Sstephen hemminger extern int br_set_forward_delay(struct net_bridge *br, unsigned long x); 67514f98f25Sstephen hemminger extern int br_set_hello_time(struct net_bridge *br, unsigned long x); 67614f98f25Sstephen hemminger extern int br_set_max_age(struct net_bridge *br, unsigned long x); 67714f98f25Sstephen hemminger 67814f98f25Sstephen hemminger 6791da177e4SLinus Torvalds /* br_stp_if.c */ 6801da177e4SLinus Torvalds extern void br_stp_enable_bridge(struct net_bridge *br); 6811da177e4SLinus Torvalds extern void br_stp_disable_bridge(struct net_bridge *br); 6829cde0708SStephen Hemminger extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val); 6831da177e4SLinus Torvalds extern void br_stp_enable_port(struct net_bridge_port *p); 6841da177e4SLinus Torvalds extern void br_stp_disable_port(struct net_bridge_port *p); 685edf947f1Sstephen hemminger extern bool br_stp_recalculate_bridge_id(struct net_bridge *br); 6864505a3efSStephen Hemminger extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a); 6871da177e4SLinus Torvalds extern void br_stp_set_bridge_priority(struct net_bridge *br, 6881da177e4SLinus Torvalds u16 newprio); 68914f98f25Sstephen hemminger extern int br_stp_set_port_priority(struct net_bridge_port *p, 69014f98f25Sstephen hemminger unsigned long newprio); 69114f98f25Sstephen hemminger extern int br_stp_set_path_cost(struct net_bridge_port *p, 69214f98f25Sstephen hemminger unsigned long path_cost); 6931da177e4SLinus Torvalds extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id); 6941da177e4SLinus Torvalds 6951da177e4SLinus Torvalds /* br_stp_bpdu.c */ 6967c85fbf0SPatrick McHardy struct stp_proto; 6977c85fbf0SPatrick McHardy extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb, 6987c85fbf0SPatrick McHardy struct net_device *dev); 6991da177e4SLinus Torvalds 7001da177e4SLinus Torvalds /* br_stp_timer.c */ 7011da177e4SLinus Torvalds extern void br_stp_timer_init(struct net_bridge *br); 7021da177e4SLinus Torvalds extern void br_stp_port_timer_init(struct net_bridge_port *p); 7031da177e4SLinus Torvalds extern unsigned long br_timer_value(const struct timer_list *timer); 7041da177e4SLinus Torvalds 7051da177e4SLinus Torvalds /* br.c */ 706e6373c4cSIgor Maravić #if IS_ENABLED(CONFIG_ATM_LANE) 707da678292SMichał Mirosław extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr); 708da678292SMichał Mirosław #endif 7091da177e4SLinus Torvalds 71011dc1f36SStephen Hemminger /* br_netlink.c */ 711149ddd83Sstephen hemminger extern struct rtnl_link_ops br_link_ops; 71232fe21c0SThomas Graf extern int br_netlink_init(void); 71311dc1f36SStephen Hemminger extern void br_netlink_fini(void); 71411dc1f36SStephen Hemminger extern void br_ifinfo_notify(int event, struct net_bridge_port *port); 715e5a55a89SJohn Fastabend extern int br_setlink(struct net_device *dev, struct nlmsghdr *nlmsg); 716e5a55a89SJohn Fastabend extern int br_getlink(struct sk_buff *skb, u32 pid, u32 seq, 717e5a55a89SJohn Fastabend struct net_device *dev); 71811dc1f36SStephen Hemminger 7191da177e4SLinus Torvalds #ifdef CONFIG_SYSFS 7201da177e4SLinus Torvalds /* br_sysfs_if.c */ 72152cf25d0SEmese Revfy extern const struct sysfs_ops brport_sysfs_ops; 7221da177e4SLinus Torvalds extern int br_sysfs_addif(struct net_bridge_port *p); 723e0f43752SSimon Arlott extern int br_sysfs_renameif(struct net_bridge_port *p); 7241da177e4SLinus Torvalds 7251da177e4SLinus Torvalds /* br_sysfs_br.c */ 7261da177e4SLinus Torvalds extern int br_sysfs_addbr(struct net_device *dev); 7271da177e4SLinus Torvalds extern void br_sysfs_delbr(struct net_device *dev); 7281da177e4SLinus Torvalds 7291da177e4SLinus Torvalds #else 7301da177e4SLinus Torvalds 7310cb2bbbeSLee Jones static inline int br_sysfs_addif(struct net_bridge_port *p) { return 0; } 7320cb2bbbeSLee Jones static inline int br_sysfs_renameif(struct net_bridge_port *p) { return 0; } 7330cb2bbbeSLee Jones static inline int br_sysfs_addbr(struct net_device *dev) { return 0; } 7340cb2bbbeSLee Jones static inline void br_sysfs_delbr(struct net_device *dev) { return; } 7351da177e4SLinus Torvalds #endif /* CONFIG_SYSFS */ 7361da177e4SLinus Torvalds 7371da177e4SLinus Torvalds #endif 738