[linux-2.6-block.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 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			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;
	struct br_ip			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;
	struct br_ip			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 br_cpu_netstats {
	unsigned long	rx_packets;
	unsigned long	rx_bytes;
	unsigned long	tx_packets;
	unsigned long	tx_bytes;
};

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];
	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);
#ifdef CONFIG_NET_POLL_CONTROLLER
extern void br_netpoll_cleanup(struct net_device *dev);
extern void br_netpoll_enable(struct net_bridge *br,
			      struct net_device *dev);
extern void br_netpoll_disable(struct net_bridge *br,
			       struct net_device *dev);
#else
#define br_netpoll_cleanup(br)
#define br_netpoll_enable(br, dev)
#define br_netpoll_disable(br, dev)

#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);

/* 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
8ef2a9a5 YH	48	struct br_ip
	49	{
	50	union {
	51	__be32 ip4;
08b202b6 YH	52	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	53	struct in6_addr ip6;
	54	#endif
8ef2a9a5 YH	55	} u;
	56	__be16 proto;
	57	};
	58
1da177e4 LT	59	struct net_bridge_fdb_entry
	60	{
	61	struct hlist_node hlist;
	62	struct net_bridge_port *dst;
	63
	64	struct rcu_head rcu;
1da177e4 LT	65	unsigned long ageing_timer;
	66	mac_addr addr;
	67	unsigned char is_local;
	68	unsigned char is_static;
	69	};
	70
eb1d1641 HX	71	struct net_bridge_port_group {
	72	struct net_bridge_port *port;
	73	struct net_bridge_port_group *next;
	74	struct hlist_node mglist;
	75	struct rcu_head rcu;
	76	struct timer_list timer;
	77	struct timer_list query_timer;
8ef2a9a5	78	struct br_ip addr;
eb1d1641 HX	79	u32 queries_sent;
	80	};
	81
	82	struct net_bridge_mdb_entry
	83	{
	84	struct hlist_node hlist[2];
	85	struct hlist_node mglist;
	86	struct net_bridge *br;
	87	struct net_bridge_port_group *ports;
	88	struct rcu_head rcu;
	89	struct timer_list timer;
	90	struct timer_list query_timer;
8ef2a9a5	91	struct br_ip addr;
eb1d1641 HX	92	u32 queries_sent;
	93	};
	94
	95	struct net_bridge_mdb_htable
	96	{
	97	struct hlist_head *mhash;
	98	struct rcu_head rcu;
	99	struct net_bridge_mdb_htable *old;
	100	u32 size;
	101	u32 max;
	102	u32 secret;
	103	u32 ver;
	104	};
	105
1da177e4 LT	106	struct net_bridge_port
	107	{
	108	struct net_bridge *br;
	109	struct net_device *dev;
	110	struct list_head list;
	111
	112	/* STP */
	113	u8 priority;
	114	u8 state;
	115	u16 port_no;
	116	unsigned char topology_change_ack;
	117	unsigned char config_pending;
	118	port_id port_id;
	119	port_id designated_port;
	120	bridge_id designated_root;
	121	bridge_id designated_bridge;
	122	u32 path_cost;
	123	u32 designated_cost;
	124
	125	struct timer_list forward_delay_timer;
	126	struct timer_list hold_timer;
	127	struct timer_list message_age_timer;
	128	struct kobject kobj;
	129	struct rcu_head rcu;
3982d3d2 FA	130
	131	unsigned long flags;
	132	#define BR_HAIRPIN_MODE 0x00000001
eb1d1641 HX	133
	134	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	135	u32 multicast_startup_queries_sent;
	136	unsigned char multicast_router;
	137	struct timer_list multicast_router_timer;
	138	struct timer_list multicast_query_timer;
	139	struct hlist_head mglist;
	140	struct hlist_node rlist;
	141	#endif
1da177e4 LT	142	};
1da177e4 LT	143
0eae88f3 ED	144	struct br_cpu_netstats {
	145	unsigned long rx_packets;
	146	unsigned long rx_bytes;
	147	unsigned long tx_packets;
	148	unsigned long tx_bytes;
	149	};
	150
1da177e4 LT	151	struct net_bridge
	152	{
	153	spinlock_t lock;
	154	struct list_head port_list;
	155	struct net_device *dev;
14bb4789	156
0eae88f3	157	struct br_cpu_netstats __percpu *stats;
1da177e4 LT	158	spinlock_t hash_lock;
1da177e4 LT	159	struct hlist_head hash[BR_HASH_SIZE];
edb5e46f	160	unsigned long feature_mask;
4adf0af6 SW	161	#ifdef CONFIG_BRIDGE_NETFILTER
	162	struct rtable fake_rtable;
	163	#endif
92c0574f SH	164	unsigned long flags;
92c0574f SH	165	#define BR_SET_MAC_ADDR 0x00000001
1da177e4 LT	166
	167	/* STP */
	168	bridge_id designated_root;
	169	bridge_id bridge_id;
	170	u32 root_path_cost;
	171	unsigned long max_age;
	172	unsigned long hello_time;
	173	unsigned long forward_delay;
	174	unsigned long bridge_max_age;
	175	unsigned long ageing_time;
	176	unsigned long bridge_hello_time;
	177	unsigned long bridge_forward_delay;
	178
fda93d92	179	u8 group_addr[ETH_ALEN];
1da177e4	180	u16 root_port;
9cde0708 SH	181
	182	enum {
	183	BR_NO_STP, /* no spanning tree */
	184	BR_KERNEL_STP, /* old STP in kernel */
	185	BR_USER_STP, /* new RSTP in userspace */
	186	} stp_enabled;
	187
1da177e4 LT	188	unsigned char topology_change;
	189	unsigned char topology_change_detected;
	190
eb1d1641 HX	191	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	192	unsigned char multicast_router;
	193
	194	u8 multicast_disabled:1;
	195
	196	u32 hash_elasticity;
	197	u32 hash_max;
	198
	199	u32 multicast_last_member_count;
	200	u32 multicast_startup_queries_sent;
	201	u32 multicast_startup_query_count;
	202
	203	unsigned long multicast_last_member_interval;
	204	unsigned long multicast_membership_interval;
	205	unsigned long multicast_querier_interval;
	206	unsigned long multicast_query_interval;
	207	unsigned long multicast_query_response_interval;
	208	unsigned long multicast_startup_query_interval;
	209
	210	spinlock_t multicast_lock;
	211	struct net_bridge_mdb_htable *mdb;
	212	struct hlist_head router_list;
	213	struct hlist_head mglist;
	214
	215	struct timer_list multicast_router_timer;
	216	struct timer_list multicast_querier_timer;
	217	struct timer_list multicast_query_timer;
	218	#endif
	219
1da177e4 LT	220	struct timer_list hello_timer;
	221	struct timer_list tcn_timer;
	222	struct timer_list topology_change_timer;
	223	struct timer_list gc_timer;
43b98c4a	224	struct kobject *ifobj;
1da177e4 LT	225	};
1da177e4 LT	226
68b7c895 HX	227	struct br_input_skb_cb {
68b7c895 HX	228	struct net_device *brdev;
32dec5dd	229	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641 HX	230	int igmp;
eb1d1641 HX	231	int mrouters_only;
32dec5dd	232	#endif
68b7c895 HX	233	};
	234
	235	#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
	236
32dec5dd YH	237	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	238	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
	239	#else
	240	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
	241	#endif
	242
1da177e4	243	extern struct notifier_block br_device_notifier;
fda93d92	244	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	245
	246	/* called under bridge lock */
	247	static inline int br_is_root_bridge(const struct net_bridge *br)
	248	{
	249	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	250	}
	251
1da177e4 LT	252	/* br_device.c */
1da177e4 LT	253	extern void br_dev_setup(struct net_device *dev);
6fef4c0c SH	254	extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
6fef4c0c SH	255	struct net_device *dev);
cfb478da	256	#ifdef CONFIG_NET_POLL_CONTROLLER
	257	extern void br_netpoll_cleanup(struct net_device *dev);
	258	extern void br_netpoll_enable(struct net_bridge *br,
	259	struct net_device *dev);
	260	extern void br_netpoll_disable(struct net_bridge *br,
	261	struct net_device *dev);
	262	#else
	263	#define br_netpoll_cleanup(br)
	264	#define br_netpoll_enable(br, dev)
	265	#define br_netpoll_disable(br, dev)
	266
	267	#endif
1da177e4 LT	268
1da177e4 LT	269	/* br_fdb.c */
87a596e0	270	extern int br_fdb_init(void);
1da177e4	271	extern void br_fdb_fini(void);
9cf63747	272	extern void br_fdb_flush(struct net_bridge *br);
1da177e4 LT	273	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	274	const unsigned char *newaddr);
	275	extern void br_fdb_cleanup(unsigned long arg);
	276	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	277	const struct net_bridge_port *p, int do_all);
1da177e4 LT	278	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
1da177e4 LT	279	const unsigned char *addr);
da678292	280	extern int br_fdb_test_addr(struct net_device dev, unsigned char addr);
9d6f229f	281	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	282	unsigned long count, unsigned long off);
	283	extern int br_fdb_insert(struct net_bridge *br,
	284	struct net_bridge_port *source,
	285	const unsigned char *addr);
	286	extern void br_fdb_update(struct net_bridge *br,
	287	struct net_bridge_port *source,
	288	const unsigned char *addr);
	289
	290	/* br_forward.c */
	291	extern void br_deliver(const struct net_bridge_port *to,
	292	struct sk_buff *skb);
	293	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	294	extern void br_forward(const struct net_bridge_port *to,
7f7708f0	295	struct sk_buff skb, struct sk_buff skb0);
1da177e4	296	extern int br_forward_finish(struct sk_buff *skb);
e081e1e3	297	extern void br_flood_deliver(struct net_bridge br, struct sk_buff skb);
b33084be HX	298	extern void br_flood_forward(struct net_bridge br, struct sk_buff skb,
b33084be HX	299	struct sk_buff *skb2);
1da177e4 LT	300
1da177e4 LT	301	/* br_if.c */
269def7c	302	extern void br_port_carrier_check(struct net_bridge_port *p);
4aa678ba AD	303	extern int br_add_bridge(struct net net, const char name);
4aa678ba AD	304	extern int br_del_bridge(struct net net, const char name);
712d6954	305	extern void br_net_exit(struct net *net);
1da177e4 LT	306	extern int br_add_if(struct net_bridge *br,
	307	struct net_device *dev);
	308	extern int br_del_if(struct net_bridge *br,
	309	struct net_device *dev);
	310	extern int br_min_mtu(const struct net_bridge *br);
81d35307	311	extern void br_features_recompute(struct net_bridge *br);
1da177e4 LT	312
	313	/* br_input.c */
	314	extern int br_handle_frame_finish(struct sk_buff *skb);
6229e362 SH	315	extern struct sk_buff br_handle_frame(struct net_bridge_port p,
6229e362 SH	316	struct sk_buff *skb);
1da177e4 LT	317
	318	/* br_ioctl.c */
	319	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
881d966b	320	extern int br_ioctl_deviceless_stub(struct net net, unsigned int cmd, void __user arg);
1da177e4	321
eb1d1641 HX	322	/* br_multicast.c */
	323	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	324	extern int br_multicast_rcv(struct net_bridge *br,
	325	struct net_bridge_port *port,
	326	struct sk_buff *skb);
	327	extern struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	328	struct sk_buff *skb);
	329	extern void br_multicast_add_port(struct net_bridge_port *port);
	330	extern void br_multicast_del_port(struct net_bridge_port *port);
	331	extern void br_multicast_enable_port(struct net_bridge_port *port);
	332	extern void br_multicast_disable_port(struct net_bridge_port *port);
	333	extern void br_multicast_init(struct net_bridge *br);
	334	extern void br_multicast_open(struct net_bridge *br);
	335	extern void br_multicast_stop(struct net_bridge *br);
5cb5e947 HX	336	extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	337	struct sk_buff *skb);
	338	extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	339	struct sk_buff skb, struct sk_buff skb2);
0909e117 HX	340	extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
	341	extern int br_multicast_set_port_router(struct net_bridge_port *p,
	342	unsigned long val);
561f1103	343	extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
b195167f	344	extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
85b35269 SS	345
	346	static inline bool br_multicast_is_router(struct net_bridge *br)
	347	{
	348	return br->multicast_router == 2 \|\|
	349	(br->multicast_router == 1 &&
	350	timer_pending(&br->multicast_router_timer));
	351	}
eb1d1641 HX	352	#else
	353	static inline int br_multicast_rcv(struct net_bridge *br,
	354	struct net_bridge_port *port,
	355	struct sk_buff *skb)
	356	{
	357	return 0;
	358	}
	359
	360	static inline struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	361	struct sk_buff *skb)
	362	{
	363	return NULL;
	364	}
	365
	366	static inline void br_multicast_add_port(struct net_bridge_port *port)
	367	{
	368	}
	369
	370	static inline void br_multicast_del_port(struct net_bridge_port *port)
	371	{
	372	}
	373
	374	static inline void br_multicast_enable_port(struct net_bridge_port *port)
	375	{
	376	}
	377
	378	static inline void br_multicast_disable_port(struct net_bridge_port *port)
	379	{
	380	}
	381
	382	static inline void br_multicast_init(struct net_bridge *br)
	383	{
	384	}
	385
	386	static inline void br_multicast_open(struct net_bridge *br)
	387	{
	388	}
	389
	390	static inline void br_multicast_stop(struct net_bridge *br)
	391	{
	392	}
5cb5e947 HX	393
	394	static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	395	struct sk_buff *skb)
	396	{
	397	}
	398
	399	static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	400	struct sk_buff *skb,
	401	struct sk_buff *skb2)
	402	{
	403	}
eb1d1641 HX	404	static inline bool br_multicast_is_router(struct net_bridge *br)
eb1d1641 HX	405	{
85b35269	406	return 0;
eb1d1641	407	}
85b35269	408	#endif
eb1d1641	409
1da177e4	410	/* br_netfilter.c */
c0909713	411	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	412	extern int br_netfilter_init(void);
1da177e4 LT	413	extern void br_netfilter_fini(void);
4adf0af6	414	extern void br_netfilter_rtable_init(struct net_bridge *);
c0909713 SH	415	#else
	416	#define br_netfilter_init() (0)
	417	#define br_netfilter_fini() do { } while(0)
4adf0af6	418	#define br_netfilter_rtable_init(x)
c0909713	419	#endif
1da177e4 LT	420
	421	/* br_stp.c */
	422	extern void br_log_state(const struct net_bridge_port *p);
	423	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	424	u16 port_no);
1da177e4 LT	425	extern void br_init_port(struct net_bridge_port *p);
	426	extern void br_become_designated_port(struct net_bridge_port *p);
	427
	428	/* br_stp_if.c */
	429	extern void br_stp_enable_bridge(struct net_bridge *br);
	430	extern void br_stp_disable_bridge(struct net_bridge *br);
9cde0708	431	extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1da177e4 LT	432	extern void br_stp_enable_port(struct net_bridge_port *p);
	433	extern void br_stp_disable_port(struct net_bridge_port *p);
	434	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	435	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	436	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	437	u16 newprio);
	438	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	439	u8 newprio);
	440	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	441	u32 path_cost);
	442	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	443
	444	/* br_stp_bpdu.c */
7c85fbf0 PM	445	struct stp_proto;
	446	extern void br_stp_rcv(const struct stp_proto proto, struct sk_buff skb,
	447	struct net_device *dev);
1da177e4 LT	448
	449	/* br_stp_timer.c */
	450	extern void br_stp_timer_init(struct net_bridge *br);
	451	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	452	extern unsigned long br_timer_value(const struct timer_list *timer);
	453
	454	/* br.c */
da678292 MM	455	#if defined(CONFIG_ATM_LANE) \|\| defined(CONFIG_ATM_LANE_MODULE)
	456	extern int (br_fdb_test_addr_hook)(struct net_device dev, unsigned char *addr);
	457	#endif
1da177e4	458
11dc1f36	459	/* br_netlink.c */
32fe21c0	460	extern int br_netlink_init(void);
11dc1f36 SH	461	extern void br_netlink_fini(void);
	462	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	463
1da177e4 LT	464	#ifdef CONFIG_SYSFS
1da177e4 LT	465	/* br_sysfs_if.c */
52cf25d0	466	extern const struct sysfs_ops brport_sysfs_ops;
1da177e4	467	extern int br_sysfs_addif(struct net_bridge_port *p);
1da177e4 LT	468
	469	/* br_sysfs_br.c */
	470	extern int br_sysfs_addbr(struct net_device *dev);
	471	extern void br_sysfs_delbr(struct net_device *dev);
	472
	473	#else
	474
	475	#define br_sysfs_addif(p) (0)
1da177e4 LT	476	#define br_sysfs_addbr(dev) (0)
	477	#define br_sysfs_delbr(dev) do { } while(0)
	478	#endif /* CONFIG_SYSFS */
	479
	480	#endif