[mirror_ubuntu-bionic-kernel.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 <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

#ifdef CONFIG_SYSFS
	char				sysfs_name[IFNAMSIZ];
#endif

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

#define br_port_get_rcu(dev) \
	((struct net_bridge_port *) rcu_dereference(dev->rx_handler_data))
#define br_port_get(dev) ((struct net_bridge_port *) dev->rx_handler_data)
#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)

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

#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);

/* 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 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);
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>
4adf0af6	19	#include <net/route.h>
1da177e4 LT	20
	21	#define BR_HASH_BITS 8
	22	#define BR_HASH_SIZE (1 << BR_HASH_BITS)
	23
	24	#define BR_HOLD_TIME (1*HZ)
	25
	26	#define BR_PORT_BITS 10
	27	#define BR_MAX_PORTS (1<<BR_PORT_BITS)
	28
9cde0708 SH	29	#define BR_VERSION "2.3"
	30
	31	/* Path to usermode spanning tree program */
	32	#define BR_STP_PROG "/sbin/bridge-stp"
8cbb512e	33
1da177e4 LT	34	typedef struct bridge_id bridge_id;
	35	typedef struct mac_addr mac_addr;
	36	typedef __u16 port_id;
	37
	38	struct bridge_id
	39	{
	40	unsigned char prio[2];
	41	unsigned char addr[6];
	42	};
	43
	44	struct mac_addr
	45	{
	46	unsigned char addr[6];
	47	};
	48
8ef2a9a5 YH	49	struct br_ip
	50	{
	51	union {
	52	__be32 ip4;
08b202b6 YH	53	#if defined(CONFIG_IPV6) \|\| defined(CONFIG_IPV6_MODULE)
	54	struct in6_addr ip6;
	55	#endif
8ef2a9a5 YH	56	} u;
	57	__be16 proto;
	58	};
	59
1da177e4 LT	60	struct net_bridge_fdb_entry
	61	{
	62	struct hlist_node hlist;
	63	struct net_bridge_port *dst;
	64
	65	struct rcu_head rcu;
1da177e4 LT	66	unsigned long ageing_timer;
	67	mac_addr addr;
	68	unsigned char is_local;
	69	unsigned char is_static;
	70	};
	71
eb1d1641 HX	72	struct net_bridge_port_group {
	73	struct net_bridge_port *port;
	74	struct net_bridge_port_group *next;
	75	struct hlist_node mglist;
	76	struct rcu_head rcu;
	77	struct timer_list timer;
	78	struct timer_list query_timer;
8ef2a9a5	79	struct br_ip addr;
eb1d1641 HX	80	u32 queries_sent;
	81	};
	82
	83	struct net_bridge_mdb_entry
	84	{
	85	struct hlist_node hlist[2];
	86	struct hlist_node mglist;
	87	struct net_bridge *br;
	88	struct net_bridge_port_group *ports;
	89	struct rcu_head rcu;
	90	struct timer_list timer;
	91	struct timer_list query_timer;
8ef2a9a5	92	struct br_ip addr;
eb1d1641 HX	93	u32 queries_sent;
	94	};
	95
	96	struct net_bridge_mdb_htable
	97	{
	98	struct hlist_head *mhash;
	99	struct rcu_head rcu;
	100	struct net_bridge_mdb_htable *old;
	101	u32 size;
	102	u32 max;
	103	u32 secret;
	104	u32 ver;
	105	};
	106
1da177e4 LT	107	struct net_bridge_port
	108	{
	109	struct net_bridge *br;
	110	struct net_device *dev;
	111	struct list_head list;
	112
	113	/* STP */
	114	u8 priority;
	115	u8 state;
	116	u16 port_no;
	117	unsigned char topology_change_ack;
	118	unsigned char config_pending;
	119	port_id port_id;
	120	port_id designated_port;
	121	bridge_id designated_root;
	122	bridge_id designated_bridge;
	123	u32 path_cost;
	124	u32 designated_cost;
	125
	126	struct timer_list forward_delay_timer;
	127	struct timer_list hold_timer;
	128	struct timer_list message_age_timer;
	129	struct kobject kobj;
	130	struct rcu_head rcu;
3982d3d2 FA	131
	132	unsigned long flags;
	133	#define BR_HAIRPIN_MODE 0x00000001
eb1d1641 HX	134
	135	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	136	u32 multicast_startup_queries_sent;
	137	unsigned char multicast_router;
	138	struct timer_list multicast_router_timer;
	139	struct timer_list multicast_query_timer;
	140	struct hlist_head mglist;
	141	struct hlist_node rlist;
	142	#endif
e0f43752 SA	143
	144	#ifdef CONFIG_SYSFS
	145	char sysfs_name[IFNAMSIZ];
	146	#endif
91d2c34a HX	147
	148	#ifdef CONFIG_NET_POLL_CONTROLLER
	149	struct netpoll *np;
	150	#endif
1da177e4 LT	151	};
1da177e4 LT	152
f350a0a8 JP	153	#define br_port_get_rcu(dev) \
	154	((struct net_bridge_port *) rcu_dereference(dev->rx_handler_data))
	155	#define br_port_get(dev) ((struct net_bridge_port *) dev->rx_handler_data)
	156	#define br_port_exists(dev) (dev->priv_flags & IFF_BRIDGE_PORT)
	157
0eae88f3 ED	158	struct br_cpu_netstats {
	159	unsigned long rx_packets;
	160	unsigned long rx_bytes;
	161	unsigned long tx_packets;
	162	unsigned long tx_bytes;
	163	};
	164
1da177e4 LT	165	struct net_bridge
	166	{
	167	spinlock_t lock;
	168	struct list_head port_list;
	169	struct net_device *dev;
14bb4789	170
0eae88f3	171	struct br_cpu_netstats __percpu *stats;
1da177e4 LT	172	spinlock_t hash_lock;
1da177e4 LT	173	struct hlist_head hash[BR_HASH_SIZE];
edb5e46f	174	unsigned long feature_mask;
4adf0af6 SW	175	#ifdef CONFIG_BRIDGE_NETFILTER
	176	struct rtable fake_rtable;
	177	#endif
92c0574f SH	178	unsigned long flags;
92c0574f SH	179	#define BR_SET_MAC_ADDR 0x00000001
1da177e4 LT	180
	181	/* STP */
	182	bridge_id designated_root;
	183	bridge_id bridge_id;
	184	u32 root_path_cost;
	185	unsigned long max_age;
	186	unsigned long hello_time;
	187	unsigned long forward_delay;
	188	unsigned long bridge_max_age;
	189	unsigned long ageing_time;
	190	unsigned long bridge_hello_time;
	191	unsigned long bridge_forward_delay;
	192
fda93d92	193	u8 group_addr[ETH_ALEN];
1da177e4	194	u16 root_port;
9cde0708 SH	195
	196	enum {
	197	BR_NO_STP, /* no spanning tree */
	198	BR_KERNEL_STP, /* old STP in kernel */
	199	BR_USER_STP, /* new RSTP in userspace */
	200	} stp_enabled;
	201
1da177e4 LT	202	unsigned char topology_change;
	203	unsigned char topology_change_detected;
	204
eb1d1641 HX	205	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	206	unsigned char multicast_router;
	207
	208	u8 multicast_disabled:1;
	209
	210	u32 hash_elasticity;
	211	u32 hash_max;
	212
	213	u32 multicast_last_member_count;
	214	u32 multicast_startup_queries_sent;
	215	u32 multicast_startup_query_count;
	216
	217	unsigned long multicast_last_member_interval;
	218	unsigned long multicast_membership_interval;
	219	unsigned long multicast_querier_interval;
	220	unsigned long multicast_query_interval;
	221	unsigned long multicast_query_response_interval;
	222	unsigned long multicast_startup_query_interval;
	223
	224	spinlock_t multicast_lock;
	225	struct net_bridge_mdb_htable *mdb;
	226	struct hlist_head router_list;
	227	struct hlist_head mglist;
	228
	229	struct timer_list multicast_router_timer;
	230	struct timer_list multicast_querier_timer;
	231	struct timer_list multicast_query_timer;
	232	#endif
	233
1da177e4 LT	234	struct timer_list hello_timer;
	235	struct timer_list tcn_timer;
	236	struct timer_list topology_change_timer;
	237	struct timer_list gc_timer;
43b98c4a	238	struct kobject *ifobj;
1da177e4 LT	239	};
1da177e4 LT	240
68b7c895 HX	241	struct br_input_skb_cb {
68b7c895 HX	242	struct net_device *brdev;
32dec5dd	243	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
eb1d1641 HX	244	int igmp;
eb1d1641 HX	245	int mrouters_only;
32dec5dd	246	#endif
68b7c895 HX	247	};
	248
	249	#define BR_INPUT_SKB_CB(__skb) ((struct br_input_skb_cb *)(__skb)->cb)
	250
32dec5dd YH	251	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	252	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (BR_INPUT_SKB_CB(__skb)->mrouters_only)
	253	#else
	254	# define BR_INPUT_SKB_CB_MROUTERS_ONLY(__skb) (0)
	255	#endif
	256
28a16c97	257	#define br_printk(level, br, format, args...) \
	258	printk(level "%s: " format, (br)->dev->name, ##args)
	259
	260	#define br_err(__br, format, args...) \
	261	br_printk(KERN_ERR, __br, format, ##args)
	262	#define br_warn(__br, format, args...) \
	263	br_printk(KERN_WARNING, __br, format, ##args)
	264	#define br_notice(__br, format, args...) \
	265	br_printk(KERN_NOTICE, __br, format, ##args)
	266	#define br_info(__br, format, args...) \
	267	br_printk(KERN_INFO, __br, format, ##args)
	268
	269	#define br_debug(br, format, args...) \
	270	pr_debug("%s: " format, (br)->dev->name, ##args)
	271
1da177e4	272	extern struct notifier_block br_device_notifier;
fda93d92	273	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	274
	275	/* called under bridge lock */
	276	static inline int br_is_root_bridge(const struct net_bridge *br)
	277	{
	278	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	279	}
	280
1da177e4 LT	281	/* br_device.c */
1da177e4 LT	282	extern void br_dev_setup(struct net_device *dev);
6fef4c0c SH	283	extern netdev_tx_t br_dev_xmit(struct sk_buff *skb,
6fef4c0c SH	284	struct net_device *dev);
cfb478da	285	#ifdef CONFIG_NET_POLL_CONTROLLER
91d2c34a HX	286	static inline struct netpoll_info br_netpoll_info(struct net_bridge br)
	287	{
	288	return br->dev->npinfo;
	289	}
	290
	291	static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
	292	struct sk_buff *skb)
	293	{
	294	struct netpoll *np = p->np;
	295
	296	if (np)
	297	netpoll_send_skb(np, skb);
	298	}
	299
	300	extern int br_netpoll_enable(struct net_bridge_port *p);
	301	extern void br_netpoll_disable(struct net_bridge_port *p);
cfb478da	302	#else
91d2c34a HX	303	static inline struct netpoll_info br_netpoll_info(struct net_bridge br)
	304	{
	305	return NULL;
	306	}
	307
9f70b0fc	308	static inline void br_netpoll_send_skb(const struct net_bridge_port *p,
91d2c34a HX	309	struct sk_buff *skb)
	310	{
	311	}
cfb478da	312
91d2c34a HX	313	static inline int br_netpoll_enable(struct net_bridge_port *p)
	314	{
	315	return 0;
	316	}
	317
	318	static inline void br_netpoll_disable(struct net_bridge_port *p)
	319	{
	320	}
cfb478da	321	#endif
1da177e4 LT	322
1da177e4 LT	323	/* br_fdb.c */
87a596e0	324	extern int br_fdb_init(void);
1da177e4	325	extern void br_fdb_fini(void);
9cf63747	326	extern void br_fdb_flush(struct net_bridge *br);
1da177e4 LT	327	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	328	const unsigned char *newaddr);
	329	extern void br_fdb_cleanup(unsigned long arg);
	330	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	331	const struct net_bridge_port *p, int do_all);
1da177e4 LT	332	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
1da177e4 LT	333	const unsigned char *addr);
da678292	334	extern int br_fdb_test_addr(struct net_device dev, unsigned char addr);
9d6f229f	335	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	336	unsigned long count, unsigned long off);
	337	extern int br_fdb_insert(struct net_bridge *br,
	338	struct net_bridge_port *source,
	339	const unsigned char *addr);
	340	extern void br_fdb_update(struct net_bridge *br,
	341	struct net_bridge_port *source,
	342	const unsigned char *addr);
	343
	344	/* br_forward.c */
	345	extern void br_deliver(const struct net_bridge_port *to,
	346	struct sk_buff *skb);
	347	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	348	extern void br_forward(const struct net_bridge_port *to,
7f7708f0	349	struct sk_buff skb, struct sk_buff skb0);
1da177e4	350	extern int br_forward_finish(struct sk_buff *skb);
e081e1e3	351	extern void br_flood_deliver(struct net_bridge br, struct sk_buff skb);
b33084be HX	352	extern void br_flood_forward(struct net_bridge br, struct sk_buff skb,
b33084be HX	353	struct sk_buff *skb2);
1da177e4 LT	354
1da177e4 LT	355	/* br_if.c */
269def7c	356	extern void br_port_carrier_check(struct net_bridge_port *p);
4aa678ba AD	357	extern int br_add_bridge(struct net net, const char name);
4aa678ba AD	358	extern int br_del_bridge(struct net net, const char name);
712d6954	359	extern void br_net_exit(struct net *net);
1da177e4 LT	360	extern int br_add_if(struct net_bridge *br,
	361	struct net_device *dev);
	362	extern int br_del_if(struct net_bridge *br,
	363	struct net_device *dev);
	364	extern int br_min_mtu(const struct net_bridge *br);
81d35307	365	extern void br_features_recompute(struct net_bridge *br);
1da177e4 LT	366
	367	/* br_input.c */
	368	extern int br_handle_frame_finish(struct sk_buff *skb);
ab95bfe0	369	extern struct sk_buff br_handle_frame(struct sk_buff skb);
1da177e4 LT	370
	371	/* br_ioctl.c */
	372	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
881d966b	373	extern int br_ioctl_deviceless_stub(struct net net, unsigned int cmd, void __user arg);
1da177e4	374
eb1d1641 HX	375	/* br_multicast.c */
	376	#ifdef CONFIG_BRIDGE_IGMP_SNOOPING
	377	extern int br_multicast_rcv(struct net_bridge *br,
	378	struct net_bridge_port *port,
	379	struct sk_buff *skb);
	380	extern struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	381	struct sk_buff *skb);
	382	extern void br_multicast_add_port(struct net_bridge_port *port);
	383	extern void br_multicast_del_port(struct net_bridge_port *port);
	384	extern void br_multicast_enable_port(struct net_bridge_port *port);
	385	extern void br_multicast_disable_port(struct net_bridge_port *port);
	386	extern void br_multicast_init(struct net_bridge *br);
	387	extern void br_multicast_open(struct net_bridge *br);
	388	extern void br_multicast_stop(struct net_bridge *br);
5cb5e947 HX	389	extern void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	390	struct sk_buff *skb);
	391	extern void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	392	struct sk_buff skb, struct sk_buff skb2);
0909e117 HX	393	extern int br_multicast_set_router(struct net_bridge *br, unsigned long val);
	394	extern int br_multicast_set_port_router(struct net_bridge_port *p,
	395	unsigned long val);
561f1103	396	extern int br_multicast_toggle(struct net_bridge *br, unsigned long val);
b195167f	397	extern int br_multicast_set_hash_max(struct net_bridge *br, unsigned long val);
85b35269 SS	398
	399	static inline bool br_multicast_is_router(struct net_bridge *br)
	400	{
	401	return br->multicast_router == 2 \|\|
	402	(br->multicast_router == 1 &&
	403	timer_pending(&br->multicast_router_timer));
	404	}
eb1d1641 HX	405	#else
	406	static inline int br_multicast_rcv(struct net_bridge *br,
	407	struct net_bridge_port *port,
	408	struct sk_buff *skb)
	409	{
	410	return 0;
	411	}
	412
	413	static inline struct net_bridge_mdb_entry br_mdb_get(struct net_bridge br,
	414	struct sk_buff *skb)
	415	{
	416	return NULL;
	417	}
	418
	419	static inline void br_multicast_add_port(struct net_bridge_port *port)
	420	{
	421	}
	422
	423	static inline void br_multicast_del_port(struct net_bridge_port *port)
	424	{
	425	}
	426
	427	static inline void br_multicast_enable_port(struct net_bridge_port *port)
	428	{
	429	}
	430
	431	static inline void br_multicast_disable_port(struct net_bridge_port *port)
	432	{
	433	}
	434
	435	static inline void br_multicast_init(struct net_bridge *br)
	436	{
	437	}
	438
	439	static inline void br_multicast_open(struct net_bridge *br)
	440	{
	441	}
	442
	443	static inline void br_multicast_stop(struct net_bridge *br)
	444	{
	445	}
5cb5e947 HX	446
	447	static inline void br_multicast_deliver(struct net_bridge_mdb_entry *mdst,
	448	struct sk_buff *skb)
	449	{
	450	}
	451
	452	static inline void br_multicast_forward(struct net_bridge_mdb_entry *mdst,
	453	struct sk_buff *skb,
	454	struct sk_buff *skb2)
	455	{
	456	}
eb1d1641 HX	457	static inline bool br_multicast_is_router(struct net_bridge *br)
eb1d1641 HX	458	{
85b35269	459	return 0;
eb1d1641	460	}
85b35269	461	#endif
eb1d1641	462
1da177e4	463	/* br_netfilter.c */
c0909713	464	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	465	extern int br_netfilter_init(void);
1da177e4 LT	466	extern void br_netfilter_fini(void);
4adf0af6	467	extern void br_netfilter_rtable_init(struct net_bridge *);
c0909713 SH	468	#else
	469	#define br_netfilter_init() (0)
	470	#define br_netfilter_fini() do { } while(0)
4adf0af6	471	#define br_netfilter_rtable_init(x)
c0909713	472	#endif
1da177e4 LT	473
	474	/* br_stp.c */
	475	extern void br_log_state(const struct net_bridge_port *p);
	476	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	477	u16 port_no);
1da177e4 LT	478	extern void br_init_port(struct net_bridge_port *p);
	479	extern void br_become_designated_port(struct net_bridge_port *p);
	480
	481	/* br_stp_if.c */
	482	extern void br_stp_enable_bridge(struct net_bridge *br);
	483	extern void br_stp_disable_bridge(struct net_bridge *br);
9cde0708	484	extern void br_stp_set_enabled(struct net_bridge *br, unsigned long val);
1da177e4 LT	485	extern void br_stp_enable_port(struct net_bridge_port *p);
	486	extern void br_stp_disable_port(struct net_bridge_port *p);
	487	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	488	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	489	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	490	u16 newprio);
	491	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	492	u8 newprio);
	493	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	494	u32 path_cost);
	495	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	496
	497	/* br_stp_bpdu.c */
7c85fbf0 PM	498	struct stp_proto;
	499	extern void br_stp_rcv(const struct stp_proto proto, struct sk_buff skb,
	500	struct net_device *dev);
1da177e4 LT	501
	502	/* br_stp_timer.c */
	503	extern void br_stp_timer_init(struct net_bridge *br);
	504	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	505	extern unsigned long br_timer_value(const struct timer_list *timer);
	506
	507	/* br.c */
da678292 MM	508	#if defined(CONFIG_ATM_LANE) \|\| defined(CONFIG_ATM_LANE_MODULE)
	509	extern int (br_fdb_test_addr_hook)(struct net_device dev, unsigned char *addr);
	510	#endif
1da177e4	511
11dc1f36	512	/* br_netlink.c */
32fe21c0	513	extern int br_netlink_init(void);
11dc1f36 SH	514	extern void br_netlink_fini(void);
	515	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	516
1da177e4 LT	517	#ifdef CONFIG_SYSFS
1da177e4 LT	518	/* br_sysfs_if.c */
52cf25d0	519	extern const struct sysfs_ops brport_sysfs_ops;
1da177e4	520	extern int br_sysfs_addif(struct net_bridge_port *p);
e0f43752	521	extern int br_sysfs_renameif(struct net_bridge_port *p);
1da177e4 LT	522
	523	/* br_sysfs_br.c */
	524	extern int br_sysfs_addbr(struct net_device *dev);
	525	extern void br_sysfs_delbr(struct net_device *dev);
	526
	527	#else
	528
	529	#define br_sysfs_addif(p) (0)
e0f43752	530	#define br_sysfs_renameif(p) (0)
1da177e4 LT	531	#define br_sysfs_addbr(dev) (0)
	532	#define br_sysfs_delbr(dev) do { } while(0)
	533	#endif /* CONFIG_SYSFS */
	534
	535	#endif