[deliverable/linux.git] / net / bridge / br_private.h

/*
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<buytenh@gnu.org>
 *
 *	This program is free software; you can redistribute it and/or
 *	modify it under the terms of the GNU General Public License
 *	as published by the Free Software Foundation; either version
 *	2 of the License, or (at your option) any later version.
 */

#ifndef _BR_PRIVATE_H
#define _BR_PRIVATE_H

#include <linux/netdevice.h>
#include <linux/if_bridge.h>
#include <linux/netpoll.h>
#include <linux/u64_stats_sync.h>
#include <net/route.h>

#define BR_HASH_BITS 8
#define BR_HASH_SIZE (1 << BR_HASH_BITS)

#define BR_HOLD_TIME (1*HZ)

#define BR_PORT_BITS	10
#define BR_MAX_PORTS	(1<<BR_PORT_BITS)

#define BR_VERSION	"2.3"

/* Path to usermode spanning tree program */
#define BR_STP_PROG	"/sbin/bridge-stp"

typedef struct bridge_id bridge_id;
typedef struct mac_addr mac_addr;
typedef __u16 port_id;

struct bridge_id
{
	unsigned char	prio[2];
	unsigned char	addr[6];
};

struct mac_addr
{
	unsigned char	addr[6];
};

struct br_ip
{
	union {
		__be32	ip4;
#if defined(CONFIG_IPV6) || defined(CONFIG_IPV6_MODULE)
		struct in6_addr ip6;
#endif
	} u;
	__be16		proto;
};

struct net_bridge_fdb_entry
{
	struct hlist_node		hlist;
	struct net_bridge_port		*dst;

	struct rcu_head			rcu;
	unsigned long			updated;
	unsigned long			used;
	mac_addr			addr;
	unsigned char			is_local;
	unsigned char			is_static;
};

struct net_bridge_port_group {
	struct net_bridge_port		*port;
	struct net_bridge_port_group __rcu *next;
	struct hlist_node		mglist;
	struct rcu_head			rcu;
	struct timer_list		timer;
	struct timer_list		query_timer;
	struct br_ip			addr;
	u32				queries_sent;
};

struct net_bridge_mdb_entry
{
	struct hlist_node		hlist[2];
	struct net_bridge		*br;
	struct net_bridge_port_group __rcu *ports;
	struct rcu_head			rcu;
	struct timer_list		timer;
	struct timer_list		query_timer;
	struct br_ip			addr;
	bool				mglist;
	u32				queries_sent;
};

struct net_bridge_mdb_htable
{
	struct hlist_head		*mhash;
	struct rcu_head			rcu;
	struct net_bridge_mdb_htable	*old;
	u32				size;
	u32				max;
	u32				secret;
	u32				ver;
};

struct net_bridge_port
{
	struct net_bridge		*br;
	struct net_device		*dev;
	struct list_head		list;

	/* STP */
	u8				priority;
	u8				state;
	u16				port_no;
	unsigned char			topology_change_ack;
	unsigned char			config_pending;
	port_id				port_id;
	port_id				designated_port;
	bridge_id			designated_root;
	bridge_id			designated_bridge;
	u32				path_cost;
	u32				designated_cost;

	struct timer_list		forward_delay_timer;
	struct timer_list		hold_timer;
	struct timer_list		message_age_timer;
	struct kobject			kobj;
	struct rcu_head			rcu;

	unsigned long 			flags;
#define BR_HAIRPIN_MODE		0x00000001

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	u32				multicast_startup_queries_sent;
	unsigned char			multicast_router;
	struct timer_list		multicast_router_timer;
	struct timer_list		multicast_query_timer;
	struct hlist_head		mglist;
	struct hlist_node		rlist;
#endif

#ifdef CONFIG_SYSFS
	char				sysfs_name[IFNAMSIZ];
#endif

#ifdef CONFIG_NET_POLL_CONTROLLER
	struct netpoll			*np;
#endif
};

#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)

static inline struct net_bridge_port *br_port_get_rcu(const struct net_device *dev)
{
	struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
	return br_port_exists(dev) ? port : NULL;
}

static inline struct net_bridge_port *br_port_get_rtnl(struct net_device *dev)
{
	return br_port_exists(dev) ?
		rtnl_dereference(dev->rx_handler_data) : NULL;
}

struct br_cpu_netstats {
	u64			rx_packets;
	u64			rx_bytes;
	u64			tx_packets;
	u64			tx_bytes;
	struct u64_stats_sync	syncp;
};

struct net_bridge
{
	spinlock_t			lock;
	struct list_head		port_list;
	struct net_device		*dev;

	struct br_cpu_netstats __percpu *stats;
	spinlock_t			hash_lock;
	struct hlist_head		hash[BR_HASH_SIZE];
#ifdef CONFIG_BRIDGE_NETFILTER
	struct rtable 			fake_rtable;
	bool				nf_call_iptables;
	bool				nf_call_ip6tables;
	bool				nf_call_arptables;
#endif
	unsigned long			flags;
#define BR_SET_MAC_ADDR		0x00000001

	/* STP */
	bridge_id			designated_root;
	bridge_id			bridge_id;
	u32				root_path_cost;
	unsigned long			max_age;
	unsigned long			hello_time;
	unsigned long			forward_delay;
	unsigned long			bridge_max_age;
	unsigned long			ageing_time;
	unsigned long			bridge_hello_time;
	unsigned long			bridge_forward_delay;

	u8				group_addr[ETH_ALEN];
	u16				root_port;

	enum {
		BR_NO_STP, 		/* no spanning tree */
		BR_KERNEL_STP,		/* old STP in kernel */
		BR_USER_STP,		/* new RSTP in userspace */
	} stp_enabled;

	unsigned char			topology_change;
	unsigned char			topology_change_detected;

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	unsigned char			multicast_router;

	u8				multicast_disabled:1;

	u32				hash_elasticity;
	u32				hash_max;

	u32				multicast_last_member_count;
	u32				multicast_startup_queries_sent;
	u32				multicast_startup_query_count;

	unsigned long			multicast_last_member_interval;
	unsigned long			multicast_membership_interval;
	unsigned long			multicast_querier_interval;
	unsigned long			multicast_query_interval;
	unsigned long			multicast_query_response_interval;
	unsigned long			multicast_startup_query_interval;

	spinlock_t			multicast_lock;
	struct net_bridge_mdb_htable __rcu *mdb;
	struct hlist_head		router_list;

	struct timer_list		multicast_router_timer;
	struct timer_list		multicast_querier_timer;
	struct timer_list		multicast_query_timer;
#endif

	struct timer_list		hello_timer;
	struct timer_list		tcn_timer;
	struct timer_list		topology_change_timer;
	struct timer_list		gc_timer;
	struct kobject			*ifobj;
};

struct br_input_skb_cb {
	struct net_device *brdev;
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	int igmp;
	int mrouters_only;
#endif
};

#define BR_INPUT_SKB_CB(__skb)	((struct br_input_skb_cb *)(__skb)->cb)

#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb)	(BR_INPUT_SKB_CB(__skb)->mrouters_only)
#else
# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb)	(0)
#endif

#define br_printk(level, br, format, args...)	\
	printk(level "%s: " format, (br)->dev->name, ##args)

#define br_err(__br, format, args...)			\
	br_printk(KERN_ERR, __br, format, ##args)
#define br_warn(__br, format, args...)			\
	br_printk(KERN_WARNING, __br, format, ##args)
#define br_notice(__br, format, args...)		\
	br_printk(KERN_NOTICE, __br, format, ##args)
#define br_info(__br, format, args...)			\
	br_printk(KERN_INFO, __br, format, ##args)

#define br_debug(br, format, args...)			\
	pr_debug("%s: " format,  (br)->dev->name, ##args)

extern struct notifier_block br_device_notifier;
extern const u8 br_group_address[ETH_ALEN];

/* called under bridge lock */
static inline int br_is_root_bridge(const struct net_bridge *br)
{
	return !memcmp(&br->bridge_id, &br->designated_root, 8);
}

/* br_device.c */
extern void br_dev_setup(struct net_device *dev);
extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
			       struct net_device *dev);
#ifdef CONFIG_NET_POLL_CONTROLLER
static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
{
	return br->dev->npinfo;
}

static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
				       struct sk_buff *skb)
{
	struct netpoll *np = p->np;

	if (np)
		netpoll_send_skb(np, skb);
}

extern int br_netpoll_enable(struct net_bridge_port *p);
extern void br_netpoll_disable(struct net_bridge_port *p);
#else
static inline struct netpoll_info *br_netpoll_info(struct net_bridge *br)
{
	return NULL;
}

static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
				       struct sk_buff *skb)
{
}

static inline int br_netpoll_enable(struct net_bridge_port *p)
{
	return 0;
}

static inline void br_netpoll_disable(struct net_bridge_port *p)
{
}
#endif

/* br_fdb.c */
extern int br_fdb_init(void);
extern void br_fdb_fini(void);
extern void br_fdb_flush(struct net_bridge *br);
extern void br_fdb_changeaddr(struct net_bridge_port *p,
			      const unsigned char *newaddr);
extern void br_fdb_cleanup(unsigned long arg);
extern void br_fdb_delete_by_port(struct net_bridge *br,
				  const struct net_bridge_port *p, int do_all);
extern struct net_bridge_fdb_entry *__br_fdb_get(struct net_bridge *br,
						 const unsigned char *addr);
extern int br_fdb_test_addr(struct net_device *dev, unsigned char *addr);
extern int br_fdb_fillbuf(struct net_bridge *br, void *buf,
			  unsigned long count, unsigned long off);
extern int br_fdb_insert(struct net_bridge *br,
			 struct net_bridge_port *source,
			 const unsigned char *addr);
extern void br_fdb_update(struct net_bridge *br,
			  struct net_bridge_port *source,
			  const unsigned char *addr);
extern int br_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb);
extern int br_fdb_add(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);
extern int br_fdb_delete(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg);

/* br_forward.c */
extern void br_deliver(const struct net_bridge_port *to,
		struct sk_buff *skb);
extern int br_dev_queue_push_xmit(struct sk_buff *skb);
extern void br_forward(const struct net_bridge_port *to,
		struct sk_buff *skb, struct sk_buff *skb0);
extern int br_forward_finish(struct sk_buff *skb);
extern void br_flood_deliver(struct net_bridge *br, struct sk_buff *skb);
extern void br_flood_forward(struct net_bridge *br, struct sk_buff *skb,
			     struct sk_buff *skb2);

/* br_if.c */
extern void br_port_carrier_check(struct net_bridge_port *p);
extern int br_add_bridge(struct net *net, const char *name);
extern int br_del_bridge(struct net *net, const char *name);
extern void br_net_exit(struct net *net);
extern int br_add_if(struct net_bridge *br,
	      struct net_device *dev);
extern int br_del_if(struct net_bridge *br,
	      struct net_device *dev);
extern int br_min_mtu(const struct net_bridge *br);
extern u32 br_features_recompute(struct net_bridge *br, u32 features);

/* br_input.c */
extern int br_handle_frame_finish(struct sk_buff *skb);
extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);

/* br_ioctl.c */
extern int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
extern int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *arg);

/* br_multicast.c */
#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
extern int br_multicast_rcv(struct net_bridge *br,
			    struct net_bridge_port *port,
			    struct sk_buff *skb);
extern struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
					       struct sk_buff *skb);
extern void br_multicast_add_port(struct net_bridge_port *port);
extern void br_multicast_del_port(struct net_bridge_port *port);
extern void br_multicast_enable_port(struct net_bridge_port *port);
extern void br_multicast_disable_port(struct net_bridge_port *port);
extern void br_multicast_init(struct net_bridge *br);
extern void br_multicast_open(struct net_bridge *br);
extern void br_multicast_stop(struct net_bridge *br);
extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
				 struct sk_buff *skb);
extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
				 struct sk_buff *skb, struct sk_buff *skb2);
extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
extern int br_multicast_set_port_router(struct net_bridge_port *p,
					unsigned long val);
extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);

static inline bool br_multicast_is_router(struct net_bridge *br)
{
	return br->multicast_router == 2 ||
	       (br->multicast_router == 1 &&
		timer_pending(&br->multicast_router_timer));
}
#else
static inline int br_multicast_rcv(struct net_bridge *br,
				   struct net_bridge_port *port,
				   struct sk_buff *skb)
{
	return 0;
}

static inline struct net_bridge_mdb_entry *br_mdb_get(struct net_bridge *br,
						      struct sk_buff *skb)
{
	return NULL;
}

static inline void br_multicast_add_port(struct net_bridge_port *port)
{
}

static inline void br_multicast_del_port(struct net_bridge_port *port)
{
}

static inline void br_multicast_enable_port(struct net_bridge_port *port)
{
}

static inline void br_multicast_disable_port(struct net_bridge_port *port)
{
}

static inline void br_multicast_init(struct net_bridge *br)
{
}

static inline void br_multicast_open(struct net_bridge *br)
{
}

static inline void br_multicast_stop(struct net_bridge *br)
{
}

static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
					struct sk_buff *skb)
{
}

static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
					struct sk_buff *skb,
					struct sk_buff *skb2)
{
}
static inline bool br_multicast_is_router(struct net_bridge *br)
{
	return 0;
}
#endif

/* br_netfilter.c */
#ifdef CONFIG_BRIDGE_NETFILTER
extern int br_netfilter_init(void);
extern void br_netfilter_fini(void);
extern void br_netfilter_rtable_init(struct net_bridge *);
#else
#define br_netfilter_init()	(0)
#define br_netfilter_fini()	do { } while(0)
#define br_netfilter_rtable_init(x)
#endif

/* br_stp.c */
extern void br_log_state(const struct net_bridge_port *p);
extern struct net_bridge_port *br_get_port(struct net_bridge *br,
					   u16 port_no);
extern void br_init_port(struct net_bridge_port *p);
extern void br_become_designated_port(struct net_bridge_port *p);

extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
extern int br_set_max_age(struct net_bridge *br, unsigned long x);


/* br_stp_if.c */
extern void br_stp_enable_bridge(struct net_bridge *br);
extern void br_stp_disable_bridge(struct net_bridge *br);
extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
extern void br_stp_enable_port(struct net_bridge_port *p);
extern void br_stp_disable_port(struct net_bridge_port *p);
extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
extern void br_stp_change_bridge_id(struct net_bridge *br, const unsigned char *a);
extern void br_stp_set_bridge_priority(struct net_bridge *br,
				       u16 newprio);
extern int br_stp_set_port_priority(struct net_bridge_port *p,
				    unsigned long newprio);
extern int br_stp_set_path_cost(struct net_bridge_port *p,
				unsigned long path_cost);
extern ssize_t br_show_bridge_id(char *buf, const struct bridge_id *id);

/* br_stp_bpdu.c */
struct stp_proto;
extern void br_stp_rcv(const struct stp_proto *proto, struct sk_buff *skb,
		       struct net_device *dev);

/* br_stp_timer.c */
extern void br_stp_timer_init(struct net_bridge *br);
extern void br_stp_port_timer_init(struct net_bridge_port *p);
extern unsigned long br_timer_value(const struct timer_list *timer);

/* br.c */
#if defined(CONFIG_ATM_LANE) || defined(CONFIG_ATM_LANE_MODULE)
extern int (*br_fdb_test_addr_hook)(struct net_device *dev, unsigned char *addr);
#endif

/* br_netlink.c */
extern int br_netlink_init(void);
extern void br_netlink_fini(void);
extern void br_ifinfo_notify(int event, struct net_bridge_port *port);

#ifdef CONFIG_SYSFS
/* br_sysfs_if.c */
extern const struct sysfs_ops brport_sysfs_ops;
extern int br_sysfs_addif(struct net_bridge_port *p);
extern int br_sysfs_renameif(struct net_bridge_port *p);

/* br_sysfs_br.c */
extern int br_sysfs_addbr(struct net_device *dev);
extern void br_sysfs_delbr(struct net_device *dev);

#else

#define br_sysfs_addif(p)	(0)
#define br_sysfs_renameif(p)	(0)
#define br_sysfs_addbr(dev)	(0)
#define br_sysfs_delbr(dev)	do { } while(0)
#endif /* CONFIG_SYSFS */

#endif
Commit	Line	Data
1da177e4 LT	1	/*
	2	* Linux ethernet bridge
	3	*
	4	* Authors:
	5	* Lennert Buytenhek <buytenh@gnu.org>
	6	*
1da177e4 LT	7	* This program is free software; you can redistribute it and/or
	8	* modify it under the terms of the GNU General Public License
	9	* as published by the Free Software Foundation; either version
	10	* 2 of the License, or (at your option) any later version.
	11	*/
	12
	13	#ifndef _BR_PRIVATE_H
	14	#define _BR_PRIVATE_H
	15
	16	#include <linux/netdevice.h>
1da177e4	17	#include <linux/if_bridge.h>
91d2c34a	18	#include <linux/netpoll.h>
406818ff	19	#include <linux/u64_stats_sync.h>
4adf0af6	20	#include <net/route.h>
1da177e4 LT	21
	22	#define BR_HASH_BITS 8
	23	#define BR_HASH_SIZE (1 << BR_HASH_BITS)
	24
	25	#define BR_HOLD_TIME (1*HZ)
	26
	27	#define BR_PORT_BITS 10
	28	#define BR_MAX_PORTS (1<<BR_PORT_BITS)
	29
9cde0708 SH	30	#define BR_VERSION "2.3"
	31
	32	/* Path to usermode spanning tree program */
	33	#define BR_STP_PROG "/sbin/bridge-stp"
8cbb512e	34
1da177e4 LT	35	typedef struct bridge_id bridge_id;
	36	typedef struct mac_addr mac_addr;
	37	typedef __u16 port_id;
	38
	39	struct bridge_id
	40	{
	41	unsigned char prio[2];
	42	unsigned char addr[6];
	43	};
	44
	45	struct mac_addr
	46	{
	47	unsigned char addr[6];
	48	};
	49
8ef2a9a5 YH	50	struct br_ip
	51	{
	52	union {
	53	__be32 ip4;
08b202b6 YH	54	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	55	struct in6_addr ip6;
	56	#endif
8ef2a9a5 YH	57	} u;
	58	__be16 proto;
	59	};
	60
1da177e4 LT	61	struct net_bridge_fdb_entry
	62	{
	63	struct hlist_node hlist;
	64	struct net_bridge_port *dst;
	65
	66	struct rcu_head rcu;
7cd8861a	67	unsigned long updated;
7cd8861a	68	unsigned long used;
1da177e4 LT	69	mac_addr addr;
	70	unsigned char is_local;
	71	unsigned char is_static;
	72	};
	73
eb1d1641 HX	74	struct net_bridge_port_group {
eb1d1641 HX	75	struct net_bridge_port *port;
e8051688	76	struct net_bridge_port_group __rcu *next;
eb1d1641 HX	77	struct hlist_node mglist;
	78	struct rcu_head rcu;
	79	struct timer_list timer;
	80	struct timer_list query_timer;
8ef2a9a5	81	struct br_ip addr;
eb1d1641 HX	82	u32 queries_sent;
	83	};
	84
	85	struct net_bridge_mdb_entry
	86	{
	87	struct hlist_node hlist[2];
eb1d1641	88	struct net_bridge *br;
e8051688	89	struct net_bridge_port_group __rcu *ports;
eb1d1641 HX	90	struct rcu_head rcu;
	91	struct timer_list timer;
	92	struct timer_list query_timer;
8ef2a9a5	93	struct br_ip addr;
8a870178	94	bool mglist;
eb1d1641 HX	95	u32 queries_sent;
	96	};
	97
	98	struct net_bridge_mdb_htable
	99	{
	100	struct hlist_head *mhash;
	101	struct rcu_head rcu;
	102	struct net_bridge_mdb_htable *old;
	103	u32 size;
	104	u32 max;
	105	u32 secret;
	106	u32 ver;
	107	};
	108
1da177e4 LT	109	struct net_bridge_port
	110	{
	111	struct net_bridge *br;
	112	struct net_device *dev;
	113	struct list_head list;
	114
	115	/* STP */
	116	u8 priority;
	117	u8 state;
	118	u16 port_no;
	119	unsigned char topology_change_ack;
	120	unsigned char config_pending;
	121	port_id port_id;
	122	port_id designated_port;
	123	bridge_id designated_root;
	124	bridge_id designated_bridge;
	125	u32 path_cost;
	126	u32 designated_cost;
	127
	128	struct timer_list forward_delay_timer;
	129	struct timer_list hold_timer;
	130	struct timer_list message_age_timer;
	131	struct kobject kobj;
	132	struct rcu_head rcu;
3982d3d2 FA	133
	134	unsigned long flags;
	135	#define BR_HAIRPIN_MODE 0x00000001
eb1d1641 HX	136
	137	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	138	u32 multicast_startup_queries_sent;
	139	unsigned char multicast_router;
	140	struct timer_list multicast_router_timer;
	141	struct timer_list multicast_query_timer;
	142	struct hlist_head mglist;
	143	struct hlist_node rlist;
	144	#endif
e0f43752 SA	145
	146	#ifdef CONFIG_SYSFS
	147	char sysfs_name[IFNAMSIZ];
	148	#endif
91d2c34a HX	149
	150	#ifdef CONFIG_NET_POLL_CONTROLLER
	151	struct netpoll *np;
	152	#endif
1da177e4 LT	153	};
1da177e4 LT	154
f350a0a8 JP	155	#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
f350a0a8 JP	156
b5ed54e9	157	static inline struct net_bridge_port br_port_get_rcu(const struct net_device dev)
	158	{
	159	struct net_bridge_port *port = rcu_dereference(dev->rx_handler_data);
	160	return br_port_exists(dev) ? port : NULL;
	161	}
	162
ec1e5610	163	static inline struct net_bridge_port br_port_get_rtnl(struct net_device dev)
b5ed54e9	164	{
ec1e5610 ED	165	return br_port_exists(dev) ?
ec1e5610 ED	166	rtnl_dereference(dev->rx_handler_data) : NULL;
b5ed54e9	167	}
b5ed54e9	168
0eae88f3	169	struct br_cpu_netstats {
406818ff ED	170	u64 rx_packets;
	171	u64 rx_bytes;
	172	u64 tx_packets;
	173	u64 tx_bytes;
	174	struct u64_stats_sync syncp;
0eae88f3 ED	175	};
0eae88f3 ED	176
1da177e4 LT	177	struct net_bridge
	178	{
	179	spinlock_t lock;
	180	struct list_head port_list;
	181	struct net_device *dev;
14bb4789	182
0eae88f3	183	struct br_cpu_netstats __percpu *stats;
1da177e4 LT	184	spinlock_t hash_lock;
1da177e4 LT	185	struct hlist_head hash[BR_HASH_SIZE];
4adf0af6 SW	186	#ifdef CONFIG_BRIDGE_NETFILTER
4adf0af6 SW	187	struct rtable fake_rtable;
4df53d8b PM	188	bool nf_call_iptables;
	189	bool nf_call_ip6tables;
	190	bool nf_call_arptables;
4adf0af6	191	#endif
92c0574f SH	192	unsigned long flags;
92c0574f SH	193	#define BR_SET_MAC_ADDR 0x00000001
1da177e4 LT	194
	195	/* STP */
	196	bridge_id designated_root;
	197	bridge_id bridge_id;
	198	u32 root_path_cost;
	199	unsigned long max_age;
	200	unsigned long hello_time;
	201	unsigned long forward_delay;
	202	unsigned long bridge_max_age;
	203	unsigned long ageing_time;
	204	unsigned long bridge_hello_time;
	205	unsigned long bridge_forward_delay;
	206
fda93d92	207	u8 group_addr[ETH_ALEN];
1da177e4	208	u16 root_port;
9cde0708 SH	209
	210	enum {
	211	BR_NO_STP, /* no spanning tree */
	212	BR_KERNEL_STP, /* old STP in kernel */
	213	BR_USER_STP, /* new RSTP in userspace */
	214	} stp_enabled;
	215
1da177e4 LT	216	unsigned char topology_change;
	217	unsigned char topology_change_detected;
	218
eb1d1641 HX	219	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	220	unsigned char multicast_router;
	221
	222	u8 multicast_disabled:1;
	223
	224	u32 hash_elasticity;
	225	u32 hash_max;
	226
	227	u32 multicast_last_member_count;
	228	u32 multicast_startup_queries_sent;
	229	u32 multicast_startup_query_count;
	230
	231	unsigned long multicast_last_member_interval;
	232	unsigned long multicast_membership_interval;
	233	unsigned long multicast_querier_interval;
	234	unsigned long multicast_query_interval;
	235	unsigned long multicast_query_response_interval;
	236	unsigned long multicast_startup_query_interval;
	237
	238	spinlock_t multicast_lock;
e8051688	239	struct net_bridge_mdb_htable __rcu *mdb;
eb1d1641	240	struct hlist_head router_list;
eb1d1641 HX	241
	242	struct timer_list multicast_router_timer;
	243	struct timer_list multicast_querier_timer;
	244	struct timer_list multicast_query_timer;
	245	#endif
	246
1da177e4 LT	247	struct timer_list hello_timer;
	248	struct timer_list tcn_timer;
	249	struct timer_list topology_change_timer;
	250	struct timer_list gc_timer;
43b98c4a	251	struct kobject *ifobj;
1da177e4 LT	252	};
1da177e4 LT	253
68b7c895 HX	254	struct br_input_skb_cb {
68b7c895 HX	255	struct net_device *brdev;
32dec5dd	256	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641 HX	257	int igmp;
eb1d1641 HX	258	int mrouters_only;
32dec5dd	259	#endif
68b7c895 HX	260	};
	261
	262	#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
	263
32dec5dd YH	264	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	265	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
	266	#else
	267	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
	268	#endif
	269
28a16c97	270	#define br_printk(level, br, format, args...) \
	271	printk(level "%s: " format, (br)->dev->name, ##args)
	272
	273	#define br_err(__br, format, args...) \
	274	br_printk(KERN_ERR, __br, format, ##args)
	275	#define br_warn(__br, format, args...) \
	276	br_printk(KERN_WARNING, __br, format, ##args)
	277	#define br_notice(__br, format, args...) \
	278	br_printk(KERN_NOTICE, __br, format, ##args)
	279	#define br_info(__br, format, args...) \
	280	br_printk(KERN_INFO, __br, format, ##args)
	281
	282	#define br_debug(br, format, args...) \
	283	pr_debug("%s: " format, (br)->dev->name, ##args)
	284
1da177e4	285	extern struct notifier_block br_device_notifier;
fda93d92	286	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	287
	288	/* called under bridge lock */
	289	static inline int br_is_root_bridge(const struct net_bridge *br)
	290	{
	291	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	292	}
	293
1da177e4 LT	294	/* br_device.c */
1da177e4 LT	295	extern void br_dev_setup(struct net_device *dev);
6fef4c0c SH	296	extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
6fef4c0c SH	297	struct net_device *dev);
cfb478da	298	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a HX	299	static inline struct netpoll_info br_netpoll_info(struct net_bridge br)
	300	{
	301	return br->dev->npinfo;
	302	}
	303
	304	static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
	305	struct sk_buff *skb)
	306	{
	307	struct netpoll *np = p->np;
	308
	309	if (np)
	310	netpoll_send_skb(np, skb);
	311	}
	312
	313	extern int br_netpoll_enable(struct net_bridge_port *p);
	314	extern void br_netpoll_disable(struct net_bridge_port *p);
cfb478da	315	#else
91d2c34a HX	316	static inline struct netpoll_info br_netpoll_info(struct net_bridge br)
	317	{
	318	return NULL;
	319	}
	320
9f70b0fc	321	static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
91d2c34a HX	322	struct sk_buff *skb)
	323	{
	324	}
cfb478da	325
91d2c34a HX	326	static inline int br_netpoll_enable(struct net_bridge_port *p)
	327	{
	328	return 0;
	329	}
	330
	331	static inline void br_netpoll_disable(struct net_bridge_port *p)
	332	{
	333	}
cfb478da	334	#endif
1da177e4 LT	335
1da177e4 LT	336	/* br_fdb.c */
87a596e0	337	extern int br_fdb_init(void);
1da177e4	338	extern void br_fdb_fini(void);
9cf63747	339	extern void br_fdb_flush(struct net_bridge *br);
1da177e4 LT	340	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	341	const unsigned char *newaddr);
	342	extern void br_fdb_cleanup(unsigned long arg);
	343	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	344	const struct net_bridge_port *p, int do_all);
1da177e4 LT	345	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
1da177e4 LT	346	const unsigned char *addr);
da678292	347	extern int br_fdb_test_addr(struct net_device dev, unsigned char addr);
9d6f229f	348	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	349	unsigned long count, unsigned long off);
	350	extern int br_fdb_insert(struct net_bridge *br,
	351	struct net_bridge_port *source,
	352	const unsigned char *addr);
	353	extern void br_fdb_update(struct net_bridge *br,
	354	struct net_bridge_port *source,
	355	const unsigned char *addr);
b078f0df	356	extern int br_fdb_dump(struct sk_buff skb, struct netlink_callback cb);
36fd2b63	357	extern int br_fdb_add(struct sk_buff skb, struct nlmsghdr nlh, void *arg);
36fd2b63	358	extern int br_fdb_delete(struct sk_buff skb, struct nlmsghdr nlh, void *arg);
1da177e4 LT	359
	360	/* br_forward.c */
	361	extern void br_deliver(const struct net_bridge_port *to,
	362	struct sk_buff *skb);
	363	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	364	extern void br_forward(const struct net_bridge_port *to,
7f7708f0	365	struct sk_buff skb, struct sk_buff skb0);
1da177e4	366	extern int br_forward_finish(struct sk_buff *skb);
e081e1e3	367	extern void br_flood_deliver(struct net_bridge br, struct sk_buff skb);
b33084be HX	368	extern void br_flood_forward(struct net_bridge br, struct sk_buff skb,
b33084be HX	369	struct sk_buff *skb2);
1da177e4 LT	370
1da177e4 LT	371	/* br_if.c */
269def7c	372	extern void br_port_carrier_check(struct net_bridge_port *p);
4aa678ba AD	373	extern int br_add_bridge(struct net net, const char name);
4aa678ba AD	374	extern int br_del_bridge(struct net net, const char name);
712d6954	375	extern void br_net_exit(struct net *net);
1da177e4 LT	376	extern int br_add_if(struct net_bridge *br,
	377	struct net_device *dev);
	378	extern int br_del_if(struct net_bridge *br,
	379	struct net_device *dev);
	380	extern int br_min_mtu(const struct net_bridge *br);
c4d27ef9	381	extern u32 br_features_recompute(struct net_bridge *br, u32 features);
1da177e4 LT	382
	383	/* br_input.c */
	384	extern int br_handle_frame_finish(struct sk_buff *skb);
8a4eb573	385	extern rx_handler_result_t br_handle_frame(struct sk_buff **pskb);
1da177e4 LT	386
	387	/* br_ioctl.c */
	388	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
881d966b	389	extern int br_ioctl_deviceless_stub(struct net net, unsigned int cmd, void __user arg);
1da177e4	390
eb1d1641 HX	391	/* br_multicast.c */
	392	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	393	extern int br_multicast_rcv(struct net_bridge *br,
	394	struct net_bridge_port *port,
	395	struct sk_buff *skb);
	396	extern struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	397	struct sk_buff *skb);
	398	extern void br_multicast_add_port(struct net_bridge_port *port);
	399	extern void br_multicast_del_port(struct net_bridge_port *port);
	400	extern void br_multicast_enable_port(struct net_bridge_port *port);
	401	extern void br_multicast_disable_port(struct net_bridge_port *port);
	402	extern void br_multicast_init(struct net_bridge *br);
	403	extern void br_multicast_open(struct net_bridge *br);
	404	extern void br_multicast_stop(struct net_bridge *br);
5cb5e947 HX	405	extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	406	struct sk_buff *skb);
	407	extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	408	struct sk_buff skb, struct sk_buff skb2);
0909e117 HX	409	extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
	410	extern int br_multicast_set_port_router(struct net_bridge_port *p,
	411	unsigned long val);
561f1103	412	extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
b195167f	413	extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
85b35269 SS	414
	415	static inline bool br_multicast_is_router(struct net_bridge *br)
	416	{
	417	return br->multicast_router == 2 \|\|
	418	(br->multicast_router == 1 &&
	419	timer_pending(&br->multicast_router_timer));
	420	}
eb1d1641 HX	421	#else
	422	static inline int br_multicast_rcv(struct net_bridge *br,
	423	struct net_bridge_port *port,
	424	struct sk_buff *skb)
	425	{
	426	return 0;
	427	}
	428
	429	static inline struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	430	struct sk_buff *skb)
	431	{
	432	return NULL;
	433	}
	434
	435	static inline void br_multicast_add_port(struct net_bridge_port *port)
	436	{
	437	}
	438
	439	static inline void br_multicast_del_port(struct net_bridge_port *port)
	440	{
	441	}
	442
	443	static inline void br_multicast_enable_port(struct net_bridge_port *port)
	444	{
	445	}
	446
	447	static inline void br_multicast_disable_port(struct net_bridge_port *port)
	448	{
	449	}
	450
	451	static inline void br_multicast_init(struct net_bridge *br)
	452	{
	453	}
	454
	455	static inline void br_multicast_open(struct net_bridge *br)
	456	{
	457	}
	458
	459	static inline void br_multicast_stop(struct net_bridge *br)
	460	{
	461	}
5cb5e947 HX	462
	463	static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	464	struct sk_buff *skb)
	465	{
	466	}
	467
	468	static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	469	struct sk_buff *skb,
	470	struct sk_buff *skb2)
	471	{
	472	}
eb1d1641 HX	473	static inline bool br_multicast_is_router(struct net_bridge *br)
eb1d1641 HX	474	{
85b35269	475	return 0;
eb1d1641	476	}
85b35269	477	#endif
eb1d1641	478
1da177e4	479	/* br_netfilter.c */
c0909713	480	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	481	extern int br_netfilter_init(void);
1da177e4 LT	482	extern void br_netfilter_fini(void);
4adf0af6	483	extern void br_netfilter_rtable_init(struct net_bridge *);
c0909713 SH	484	#else
	485	#define br_netfilter_init() (0)
	486	#define br_netfilter_fini() do { } while(0)
4adf0af6	487	#define br_netfilter_rtable_init(x)
c0909713	488	#endif
1da177e4 LT	489
	490	/* br_stp.c */
	491	extern void br_log_state(const struct net_bridge_port *p);
	492	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	493	u16 port_no);
1da177e4 LT	494	extern void br_init_port(struct net_bridge_port *p);
	495	extern void br_become_designated_port(struct net_bridge_port *p);
	496
14f98f25	497	extern int br_set_forward_delay(struct net_bridge *br, unsigned long x);
	498	extern int br_set_hello_time(struct net_bridge *br, unsigned long x);
	499	extern int br_set_max_age(struct net_bridge *br, unsigned long x);
	500
	501
1da177e4 LT	502	/* br_stp_if.c */
	503	extern void br_stp_enable_bridge(struct net_bridge *br);
	504	extern void br_stp_disable_bridge(struct net_bridge *br);
9cde0708	505	extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1da177e4 LT	506	extern void br_stp_enable_port(struct net_bridge_port *p);
1da177e4 LT	507	extern void br_stp_disable_port(struct net_bridge_port *p);
edf947f1	508	extern bool br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	509	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	510	extern void br_stp_set_bridge_priority(struct net_bridge *br,
1da177e4 LT	511	u16 newprio);
14f98f25	512	extern int br_stp_set_port_priority(struct net_bridge_port *p,
	513	unsigned long newprio);
	514	extern int br_stp_set_path_cost(struct net_bridge_port *p,
	515	unsigned long path_cost);
1da177e4 LT	516	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	517
	518	/* br_stp_bpdu.c */
7c85fbf0 PM	519	struct stp_proto;
	520	extern void br_stp_rcv(const struct stp_proto proto, struct sk_buff skb,
	521	struct net_device *dev);
1da177e4 LT	522
	523	/* br_stp_timer.c */
	524	extern void br_stp_timer_init(struct net_bridge *br);
	525	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	526	extern unsigned long br_timer_value(const struct timer_list *timer);
	527
	528	/* br.c */
da678292 MM	529	#if defined(CONFIG_ATM_LANE) \|\| defined(CONFIG_ATM_LANE_MODULE)
	530	extern int (br_fdb_test_addr_hook)(struct net_device dev, unsigned char *addr);
	531	#endif
1da177e4	532
11dc1f36	533	/* br_netlink.c */
32fe21c0	534	extern int br_netlink_init(void);
11dc1f36 SH	535	extern void br_netlink_fini(void);
	536	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	537
1da177e4 LT	538	#ifdef CONFIG_SYSFS
1da177e4 LT	539	/* br_sysfs_if.c */
52cf25d0	540	extern const struct sysfs_ops brport_sysfs_ops;
1da177e4	541	extern int br_sysfs_addif(struct net_bridge_port *p);
e0f43752	542	extern int br_sysfs_renameif(struct net_bridge_port *p);
1da177e4 LT	543
	544	/* br_sysfs_br.c */
	545	extern int br_sysfs_addbr(struct net_device *dev);
	546	extern void br_sysfs_delbr(struct net_device *dev);
	547
	548	#else
	549
	550	#define br_sysfs_addif(p) (0)
e0f43752	551	#define br_sysfs_renameif(p) (0)
1da177e4 LT	552	#define br_sysfs_addbr(dev) (0)
	553	#define br_sysfs_delbr(dev) do { } while(0)
	554	#endif /* CONFIG_SYSFS */
	555
	556	#endif