[net-next-2.6.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 <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 net_bridge_fdb_entry
{
	struct hlist_node		hlist;
	struct net_bridge_port		*dst;

	struct rcu_head			rcu;
	unsigned long			ageing_timer;
	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	*next;
	struct hlist_node		mglist;
	struct rcu_head			rcu;
	struct timer_list		timer;
	struct timer_list		query_timer;
	__be32				addr;
	u32				queries_sent;
};

struct net_bridge_mdb_entry
{
	struct hlist_node		hlist[2];
	struct hlist_node		mglist;
	struct net_bridge		*br;
	struct net_bridge_port_group	*ports;
	struct rcu_head			rcu;
	struct timer_list		timer;
	struct timer_list		query_timer;
	__be32				addr;
	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
};

struct net_bridge
{
	spinlock_t			lock;
	struct list_head		port_list;
	struct net_device		*dev;
	spinlock_t			hash_lock;
	struct hlist_head		hash[BR_HASH_SIZE];
	unsigned long			feature_mask;
#ifdef CONFIG_BRIDGE_NETFILTER
	struct rtable 			fake_rtable;
#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	*mdb;
	struct hlist_head		router_list;
	struct hlist_head		mglist;

	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

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);

/* 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);

/* 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 void br_features_recompute(struct net_bridge *br);

/* br_input.c */
extern int br_handle_frame_finish(struct sk_buff *skb);
extern struct sk_buff *br_handle_frame(struct net_bridge_port *p,
				       struct sk_buff *skb);

/* 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);

/* 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 void 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 void br_stp_set_port_priority(struct net_bridge_port *p,
				     u8 newprio);
extern void br_stp_set_path_cost(struct net_bridge_port *p,
				 u32 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);

/* 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_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>
4adf0af6	18	#include <net/route.h>
1da177e4 LT	19
	20	#define BR_HASH_BITS 8
	21	#define BR_HASH_SIZE (1 << BR_HASH_BITS)
	22
	23	#define BR_HOLD_TIME (1*HZ)
	24
	25	#define BR_PORT_BITS 10
	26	#define BR_MAX_PORTS (1<<BR_PORT_BITS)
	27
9cde0708 SH	28	#define BR_VERSION "2.3"
	29
	30	/* Path to usermode spanning tree program */
	31	#define BR_STP_PROG "/sbin/bridge-stp"
8cbb512e	32
1da177e4 LT	33	typedef struct bridge_id bridge_id;
	34	typedef struct mac_addr mac_addr;
	35	typedef __u16 port_id;
	36
	37	struct bridge_id
	38	{
	39	unsigned char prio[2];
	40	unsigned char addr[6];
	41	};
	42
	43	struct mac_addr
	44	{
	45	unsigned char addr[6];
	46	};
	47
	48	struct net_bridge_fdb_entry
	49	{
	50	struct hlist_node hlist;
	51	struct net_bridge_port *dst;
	52
	53	struct rcu_head rcu;
1da177e4 LT	54	unsigned long ageing_timer;
	55	mac_addr addr;
	56	unsigned char is_local;
	57	unsigned char is_static;
	58	};
	59
eb1d1641 HX	60	struct net_bridge_port_group {
	61	struct net_bridge_port *port;
	62	struct net_bridge_port_group *next;
	63	struct hlist_node mglist;
	64	struct rcu_head rcu;
	65	struct timer_list timer;
	66	struct timer_list query_timer;
	67	__be32 addr;
	68	u32 queries_sent;
	69	};
	70
	71	struct net_bridge_mdb_entry
	72	{
	73	struct hlist_node hlist[2];
	74	struct hlist_node mglist;
	75	struct net_bridge *br;
	76	struct net_bridge_port_group *ports;
	77	struct rcu_head rcu;
	78	struct timer_list timer;
	79	struct timer_list query_timer;
	80	__be32 addr;
	81	u32 queries_sent;
	82	};
	83
	84	struct net_bridge_mdb_htable
	85	{
	86	struct hlist_head *mhash;
	87	struct rcu_head rcu;
	88	struct net_bridge_mdb_htable *old;
	89	u32 size;
	90	u32 max;
	91	u32 secret;
	92	u32 ver;
	93	};
	94
1da177e4 LT	95	struct net_bridge_port
	96	{
	97	struct net_bridge *br;
	98	struct net_device *dev;
	99	struct list_head list;
	100
	101	/* STP */
	102	u8 priority;
	103	u8 state;
	104	u16 port_no;
	105	unsigned char topology_change_ack;
	106	unsigned char config_pending;
	107	port_id port_id;
	108	port_id designated_port;
	109	bridge_id designated_root;
	110	bridge_id designated_bridge;
	111	u32 path_cost;
	112	u32 designated_cost;
	113
	114	struct timer_list forward_delay_timer;
	115	struct timer_list hold_timer;
	116	struct timer_list message_age_timer;
	117	struct kobject kobj;
	118	struct rcu_head rcu;
3982d3d2 FA	119
	120	unsigned long flags;
	121	#define BR_HAIRPIN_MODE 0x00000001
eb1d1641 HX	122
	123	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	124	u32 multicast_startup_queries_sent;
	125	unsigned char multicast_router;
	126	struct timer_list multicast_router_timer;
	127	struct timer_list multicast_query_timer;
	128	struct hlist_head mglist;
	129	struct hlist_node rlist;
	130	#endif
1da177e4 LT	131	};
	132
	133	struct net_bridge
	134	{
	135	spinlock_t lock;
	136	struct list_head port_list;
	137	struct net_device *dev;
1da177e4 LT	138	spinlock_t hash_lock;
1da177e4 LT	139	struct hlist_head hash[BR_HASH_SIZE];
edb5e46f	140	unsigned long feature_mask;
4adf0af6 SW	141	#ifdef CONFIG_BRIDGE_NETFILTER
	142	struct rtable fake_rtable;
	143	#endif
92c0574f SH	144	unsigned long flags;
92c0574f SH	145	#define BR_SET_MAC_ADDR 0x00000001
1da177e4 LT	146
	147	/* STP */
	148	bridge_id designated_root;
	149	bridge_id bridge_id;
	150	u32 root_path_cost;
	151	unsigned long max_age;
	152	unsigned long hello_time;
	153	unsigned long forward_delay;
	154	unsigned long bridge_max_age;
	155	unsigned long ageing_time;
	156	unsigned long bridge_hello_time;
	157	unsigned long bridge_forward_delay;
	158
fda93d92	159	u8 group_addr[ETH_ALEN];
1da177e4	160	u16 root_port;
9cde0708 SH	161
	162	enum {
	163	BR_NO_STP, /* no spanning tree */
	164	BR_KERNEL_STP, /* old STP in kernel */
	165	BR_USER_STP, /* new RSTP in userspace */
	166	} stp_enabled;
	167
1da177e4 LT	168	unsigned char topology_change;
	169	unsigned char topology_change_detected;
	170
eb1d1641 HX	171	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	172	unsigned char multicast_router;
	173
	174	u8 multicast_disabled:1;
	175
	176	u32 hash_elasticity;
	177	u32 hash_max;
	178
	179	u32 multicast_last_member_count;
	180	u32 multicast_startup_queries_sent;
	181	u32 multicast_startup_query_count;
	182
	183	unsigned long multicast_last_member_interval;
	184	unsigned long multicast_membership_interval;
	185	unsigned long multicast_querier_interval;
	186	unsigned long multicast_query_interval;
	187	unsigned long multicast_query_response_interval;
	188	unsigned long multicast_startup_query_interval;
	189
	190	spinlock_t multicast_lock;
	191	struct net_bridge_mdb_htable *mdb;
	192	struct hlist_head router_list;
	193	struct hlist_head mglist;
	194
	195	struct timer_list multicast_router_timer;
	196	struct timer_list multicast_querier_timer;
	197	struct timer_list multicast_query_timer;
	198	#endif
	199
1da177e4 LT	200	struct timer_list hello_timer;
	201	struct timer_list tcn_timer;
	202	struct timer_list topology_change_timer;
	203	struct timer_list gc_timer;
43b98c4a	204	struct kobject *ifobj;
1da177e4 LT	205	};
1da177e4 LT	206
68b7c895 HX	207	struct br_input_skb_cb {
68b7c895 HX	208	struct net_device *brdev;
32dec5dd	209	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641 HX	210	int igmp;
eb1d1641 HX	211	int mrouters_only;
32dec5dd	212	#endif
68b7c895 HX	213	};
	214
	215	#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
	216
32dec5dd YH	217	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	218	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
	219	#else
	220	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
	221	#endif
	222
1da177e4	223	extern struct notifier_block br_device_notifier;
fda93d92	224	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	225
	226	/* called under bridge lock */
	227	static inline int br_is_root_bridge(const struct net_bridge *br)
	228	{
	229	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	230	}
	231
1da177e4 LT	232	/* br_device.c */
1da177e4 LT	233	extern void br_dev_setup(struct net_device *dev);
6fef4c0c SH	234	extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
6fef4c0c SH	235	struct net_device *dev);
1da177e4 LT	236
1da177e4 LT	237	/* br_fdb.c */
87a596e0	238	extern int br_fdb_init(void);
1da177e4	239	extern void br_fdb_fini(void);
9cf63747	240	extern void br_fdb_flush(struct net_bridge *br);
1da177e4 LT	241	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	242	const unsigned char *newaddr);
	243	extern void br_fdb_cleanup(unsigned long arg);
	244	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	245	const struct net_bridge_port *p, int do_all);
1da177e4 LT	246	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
1da177e4 LT	247	const unsigned char *addr);
da678292	248	extern int br_fdb_test_addr(struct net_device dev, unsigned char addr);
9d6f229f	249	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	250	unsigned long count, unsigned long off);
	251	extern int br_fdb_insert(struct net_bridge *br,
	252	struct net_bridge_port *source,
	253	const unsigned char *addr);
	254	extern void br_fdb_update(struct net_bridge *br,
	255	struct net_bridge_port *source,
	256	const unsigned char *addr);
	257
	258	/* br_forward.c */
	259	extern void br_deliver(const struct net_bridge_port *to,
	260	struct sk_buff *skb);
	261	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	262	extern void br_forward(const struct net_bridge_port *to,
7f7708f0	263	struct sk_buff skb, struct sk_buff skb0);
1da177e4	264	extern int br_forward_finish(struct sk_buff *skb);
e081e1e3	265	extern void br_flood_deliver(struct net_bridge br, struct sk_buff skb);
b33084be HX	266	extern void br_flood_forward(struct net_bridge br, struct sk_buff skb,
b33084be HX	267	struct sk_buff *skb2);
1da177e4 LT	268
1da177e4 LT	269	/* br_if.c */
269def7c	270	extern void br_port_carrier_check(struct net_bridge_port *p);
4aa678ba AD	271	extern int br_add_bridge(struct net net, const char name);
4aa678ba AD	272	extern int br_del_bridge(struct net net, const char name);
712d6954	273	extern void br_net_exit(struct net *net);
1da177e4 LT	274	extern int br_add_if(struct net_bridge *br,
	275	struct net_device *dev);
	276	extern int br_del_if(struct net_bridge *br,
	277	struct net_device *dev);
	278	extern int br_min_mtu(const struct net_bridge *br);
81d35307	279	extern void br_features_recompute(struct net_bridge *br);
1da177e4 LT	280
	281	/* br_input.c */
	282	extern int br_handle_frame_finish(struct sk_buff *skb);
6229e362 SH	283	extern struct sk_buff br_handle_frame(struct net_bridge_port p,
6229e362 SH	284	struct sk_buff *skb);
1da177e4 LT	285
	286	/* br_ioctl.c */
	287	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
881d966b	288	extern int br_ioctl_deviceless_stub(struct net net, unsigned int cmd, void __user arg);
1da177e4	289
eb1d1641 HX	290	/* br_multicast.c */
	291	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	292	extern int br_multicast_rcv(struct net_bridge *br,
	293	struct net_bridge_port *port,
	294	struct sk_buff *skb);
	295	extern struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	296	struct sk_buff *skb);
	297	extern void br_multicast_add_port(struct net_bridge_port *port);
	298	extern void br_multicast_del_port(struct net_bridge_port *port);
	299	extern void br_multicast_enable_port(struct net_bridge_port *port);
	300	extern void br_multicast_disable_port(struct net_bridge_port *port);
	301	extern void br_multicast_init(struct net_bridge *br);
	302	extern void br_multicast_open(struct net_bridge *br);
	303	extern void br_multicast_stop(struct net_bridge *br);
5cb5e947 HX	304	extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	305	struct sk_buff *skb);
	306	extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	307	struct sk_buff skb, struct sk_buff skb2);
0909e117 HX	308	extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
	309	extern int br_multicast_set_port_router(struct net_bridge_port *p,
	310	unsigned long val);
561f1103	311	extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
b195167f	312	extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
85b35269 SS	313
	314	static inline bool br_multicast_is_router(struct net_bridge *br)
	315	{
	316	return br->multicast_router == 2 \|\|
	317	(br->multicast_router == 1 &&
	318	timer_pending(&br->multicast_router_timer));
	319	}
eb1d1641 HX	320	#else
	321	static inline int br_multicast_rcv(struct net_bridge *br,
	322	struct net_bridge_port *port,
	323	struct sk_buff *skb)
	324	{
	325	return 0;
	326	}
	327
	328	static inline struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	329	struct sk_buff *skb)
	330	{
	331	return NULL;
	332	}
	333
	334	static inline void br_multicast_add_port(struct net_bridge_port *port)
	335	{
	336	}
	337
	338	static inline void br_multicast_del_port(struct net_bridge_port *port)
	339	{
	340	}
	341
	342	static inline void br_multicast_enable_port(struct net_bridge_port *port)
	343	{
	344	}
	345
	346	static inline void br_multicast_disable_port(struct net_bridge_port *port)
	347	{
	348	}
	349
	350	static inline void br_multicast_init(struct net_bridge *br)
	351	{
	352	}
	353
	354	static inline void br_multicast_open(struct net_bridge *br)
	355	{
	356	}
	357
	358	static inline void br_multicast_stop(struct net_bridge *br)
	359	{
	360	}
5cb5e947 HX	361
	362	static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	363	struct sk_buff *skb)
	364	{
	365	}
	366
	367	static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	368	struct sk_buff *skb,
	369	struct sk_buff *skb2)
	370	{
	371	}
eb1d1641 HX	372	static inline bool br_multicast_is_router(struct net_bridge *br)
eb1d1641 HX	373	{
85b35269	374	return 0;
eb1d1641	375	}
85b35269	376	#endif
eb1d1641	377
1da177e4	378	/* br_netfilter.c */
c0909713	379	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	380	extern int br_netfilter_init(void);
1da177e4 LT	381	extern void br_netfilter_fini(void);
4adf0af6	382	extern void br_netfilter_rtable_init(struct net_bridge *);
c0909713 SH	383	#else
	384	#define br_netfilter_init() (0)
	385	#define br_netfilter_fini() do { } while(0)
4adf0af6	386	#define br_netfilter_rtable_init(x)
c0909713	387	#endif
1da177e4 LT	388
	389	/* br_stp.c */
	390	extern void br_log_state(const struct net_bridge_port *p);
	391	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	392	u16 port_no);
1da177e4 LT	393	extern void br_init_port(struct net_bridge_port *p);
	394	extern void br_become_designated_port(struct net_bridge_port *p);
	395
	396	/* br_stp_if.c */
	397	extern void br_stp_enable_bridge(struct net_bridge *br);
	398	extern void br_stp_disable_bridge(struct net_bridge *br);
9cde0708	399	extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1da177e4 LT	400	extern void br_stp_enable_port(struct net_bridge_port *p);
	401	extern void br_stp_disable_port(struct net_bridge_port *p);
	402	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	403	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	404	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	405	u16 newprio);
	406	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	407	u8 newprio);
	408	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	409	u32 path_cost);
	410	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	411
	412	/* br_stp_bpdu.c */
7c85fbf0 PM	413	struct stp_proto;
	414	extern void br_stp_rcv(const struct stp_proto proto, struct sk_buff skb,
	415	struct net_device *dev);
1da177e4 LT	416
	417	/* br_stp_timer.c */
	418	extern void br_stp_timer_init(struct net_bridge *br);
	419	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	420	extern unsigned long br_timer_value(const struct timer_list *timer);
	421
	422	/* br.c */
da678292 MM	423	#if defined(CONFIG_ATM_LANE) \|\| defined(CONFIG_ATM_LANE_MODULE)
	424	extern int (br_fdb_test_addr_hook)(struct net_device dev, unsigned char *addr);
	425	#endif
1da177e4	426
11dc1f36	427	/* br_netlink.c */
32fe21c0	428	extern int br_netlink_init(void);
11dc1f36 SH	429	extern void br_netlink_fini(void);
	430	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	431
1da177e4 LT	432	#ifdef CONFIG_SYSFS
1da177e4 LT	433	/* br_sysfs_if.c */
52cf25d0	434	extern const struct sysfs_ops brport_sysfs_ops;
1da177e4	435	extern int br_sysfs_addif(struct net_bridge_port *p);
1da177e4 LT	436
	437	/* br_sysfs_br.c */
	438	extern int br_sysfs_addbr(struct net_device *dev);
	439	extern void br_sysfs_delbr(struct net_device *dev);
	440
	441	#else
	442
	443	#define br_sysfs_addif(p) (0)
1da177e4 LT	444	#define br_sysfs_addbr(dev) (0)
	445	#define br_sysfs_delbr(dev) do { } while(0)
	446	#endif /* CONFIG_SYSFS */
	447
	448	#endif