[net-next-2.6.git] / net / bridge / br_private.h

/*
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<buytenh@gnu.org>
 *
 *	$Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $
 *
 *	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>

#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_PORT_DEBOUNCE (HZ/10)

#define BR_VERSION	"2.2"

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;
	atomic_t			use_count;
	unsigned long			ageing_timer;
	mac_addr			addr;
	unsigned char			is_local;
	unsigned char			is_static;
};

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 delayed_work		carrier_check;
	struct rcu_head			rcu;
};

struct net_bridge
{
	spinlock_t			lock;
	struct list_head		port_list;
	struct net_device		*dev;
	struct net_device_stats		statistics;
	spinlock_t			hash_lock;
	struct hlist_head		hash[BR_HASH_SIZE];
	struct list_head		age_list;
	unsigned long			feature_mask;

	/* 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;
	unsigned char			stp_enabled;
	unsigned char			topology_change;
	unsigned char			topology_change_detected;

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

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 int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);

/* br_fdb.c */
extern void br_fdb_init(void);
extern void br_fdb_fini(void);
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 struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
					       unsigned char *addr);
extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
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);
extern int br_forward_finish(struct sk_buff *skb);
extern void br_flood_deliver(struct net_bridge *br,
		      struct sk_buff *skb,
		      int clone);
extern void br_flood_forward(struct net_bridge *br,
		      struct sk_buff *skb,
		      int clone);

/* br_if.c */
extern int br_add_bridge(const char *name);
extern int br_del_bridge(const char *name);
extern void br_cleanup_bridges(void);
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 int br_handle_frame(struct net_bridge_port *p, 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(unsigned int cmd, void __user *arg);

/* br_netfilter.c */
#ifdef CONFIG_BRIDGE_NETFILTER
extern int br_netfilter_init(void);
extern void br_netfilter_fini(void);
#else
#define br_netfilter_init()	(0)
#define br_netfilter_fini()	do { } while(0)
#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_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 */
extern int br_stp_rcv(struct sk_buff *skb, struct net_device *dev,
		      struct packet_type *pt, struct net_device *orig_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 */
extern struct net_bridge_fdb_entry *(*br_fdb_get_hook)(struct net_bridge *br,
						       unsigned char *addr);
extern void (*br_fdb_put_hook)(struct net_bridge_fdb_entry *ent);


/* br_netlink.c */
extern void 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 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	*
	7	* $Id: br_private.h,v 1.7 2001/12/24 00:59:55 davem Exp $
	8	*
	9	* This program is free software; you can redistribute it and/or
	10	* modify it under the terms of the GNU General Public License
	11	* as published by the Free Software Foundation; either version
	12	* 2 of the License, or (at your option) any later version.
	13	*/
	14
	15	#ifndef _BR_PRIVATE_H
	16	#define _BR_PRIVATE_H
	17
	18	#include <linux/netdevice.h>
1da177e4 LT	19	#include <linux/if_bridge.h>
	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
4433f420 SH	29	#define BR_PORT_DEBOUNCE (HZ/10)
4433f420 SH	30
11dc1f36	31	#define BR_VERSION "2.2"
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;
	54	atomic_t use_count;
	55	unsigned long ageing_timer;
	56	mac_addr addr;
	57	unsigned char is_local;
	58	unsigned char is_static;
	59	};
	60
	61	struct net_bridge_port
	62	{
	63	struct net_bridge *br;
	64	struct net_device *dev;
	65	struct list_head list;
	66
	67	/* STP */
	68	u8 priority;
	69	u8 state;
	70	u16 port_no;
	71	unsigned char topology_change_ack;
	72	unsigned char config_pending;
	73	port_id port_id;
	74	port_id designated_port;
	75	bridge_id designated_root;
	76	bridge_id designated_bridge;
	77	u32 path_cost;
	78	u32 designated_cost;
	79
	80	struct timer_list forward_delay_timer;
	81	struct timer_list hold_timer;
	82	struct timer_list message_age_timer;
	83	struct kobject kobj;
c4028958	84	struct delayed_work carrier_check;
1da177e4 LT	85	struct rcu_head rcu;
	86	};
	87
	88	struct net_bridge
	89	{
	90	spinlock_t lock;
	91	struct list_head port_list;
	92	struct net_device *dev;
	93	struct net_device_stats statistics;
	94	spinlock_t hash_lock;
	95	struct hlist_head hash[BR_HASH_SIZE];
	96	struct list_head age_list;
edb5e46f	97	unsigned long feature_mask;
1da177e4 LT	98
	99	/* STP */
	100	bridge_id designated_root;
	101	bridge_id bridge_id;
	102	u32 root_path_cost;
	103	unsigned long max_age;
	104	unsigned long hello_time;
	105	unsigned long forward_delay;
	106	unsigned long bridge_max_age;
	107	unsigned long ageing_time;
	108	unsigned long bridge_hello_time;
	109	unsigned long bridge_forward_delay;
	110
fda93d92	111	u8 group_addr[ETH_ALEN];
1da177e4 LT	112	u16 root_port;
	113	unsigned char stp_enabled;
	114	unsigned char topology_change;
	115	unsigned char topology_change_detected;
	116
	117	struct timer_list hello_timer;
	118	struct timer_list tcn_timer;
	119	struct timer_list topology_change_timer;
	120	struct timer_list gc_timer;
	121	struct kobject ifobj;
	122	};
	123
	124	extern struct notifier_block br_device_notifier;
fda93d92	125	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	126
	127	/* called under bridge lock */
	128	static inline int br_is_root_bridge(const struct net_bridge *br)
	129	{
	130	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	131	}
	132
	133
	134	/* br_device.c */
	135	extern void br_dev_setup(struct net_device *dev);
	136	extern int br_dev_xmit(struct sk_buff skb, struct net_device dev);
	137
	138	/* br_fdb.c */
	139	extern void br_fdb_init(void);
	140	extern void br_fdb_fini(void);
	141	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	142	const unsigned char *newaddr);
	143	extern void br_fdb_cleanup(unsigned long arg);
	144	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	145	const struct net_bridge_port *p, int do_all);
1da177e4 LT	146	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
	147	const unsigned char *addr);
	148	extern struct net_bridge_fdb_entry br_fdb_get(struct net_bridge br,
	149	unsigned char *addr);
	150	extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
9d6f229f	151	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	152	unsigned long count, unsigned long off);
	153	extern int br_fdb_insert(struct net_bridge *br,
	154	struct net_bridge_port *source,
	155	const unsigned char *addr);
	156	extern void br_fdb_update(struct net_bridge *br,
	157	struct net_bridge_port *source,
	158	const unsigned char *addr);
	159
	160	/* br_forward.c */
	161	extern void br_deliver(const struct net_bridge_port *to,
	162	struct sk_buff *skb);
	163	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	164	extern void br_forward(const struct net_bridge_port *to,
	165	struct sk_buff *skb);
	166	extern int br_forward_finish(struct sk_buff *skb);
	167	extern void br_flood_deliver(struct net_bridge *br,
	168	struct sk_buff *skb,
	169	int clone);
	170	extern void br_flood_forward(struct net_bridge *br,
	171	struct sk_buff *skb,
	172	int clone);
	173
	174	/* br_if.c */
	175	extern int br_add_bridge(const char *name);
	176	extern int br_del_bridge(const char *name);
	177	extern void br_cleanup_bridges(void);
	178	extern int br_add_if(struct net_bridge *br,
	179	struct net_device *dev);
	180	extern int br_del_if(struct net_bridge *br,
	181	struct net_device *dev);
	182	extern int br_min_mtu(const struct net_bridge *br);
81d35307	183	extern void br_features_recompute(struct net_bridge *br);
1da177e4 LT	184
	185	/* br_input.c */
	186	extern int br_handle_frame_finish(struct sk_buff *skb);
	187	extern int br_handle_frame(struct net_bridge_port p, struct sk_buff *pskb);
	188
	189	/* br_ioctl.c */
	190	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
	191	extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
	192
	193	/* br_netfilter.c */
c0909713	194	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	195	extern int br_netfilter_init(void);
1da177e4 LT	196	extern void br_netfilter_fini(void);
c0909713 SH	197	#else
	198	#define br_netfilter_init() (0)
	199	#define br_netfilter_fini() do { } while(0)
	200	#endif
1da177e4 LT	201
	202	/* br_stp.c */
	203	extern void br_log_state(const struct net_bridge_port *p);
	204	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	205	u16 port_no);
1da177e4 LT	206	extern void br_init_port(struct net_bridge_port *p);
	207	extern void br_become_designated_port(struct net_bridge_port *p);
	208
	209	/* br_stp_if.c */
	210	extern void br_stp_enable_bridge(struct net_bridge *br);
	211	extern void br_stp_disable_bridge(struct net_bridge *br);
	212	extern void br_stp_enable_port(struct net_bridge_port *p);
	213	extern void br_stp_disable_port(struct net_bridge_port *p);
	214	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	215	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	216	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	217	u16 newprio);
	218	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	219	u8 newprio);
	220	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	221	u32 path_cost);
	222	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	223
	224	/* br_stp_bpdu.c */
cf0f02d0 SH	225	extern int br_stp_rcv(struct sk_buff skb, struct net_device dev,
cf0f02d0 SH	226	struct packet_type pt, struct net_device orig_dev);
1da177e4 LT	227
	228	/* br_stp_timer.c */
	229	extern void br_stp_timer_init(struct net_bridge *br);
	230	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	231	extern unsigned long br_timer_value(const struct timer_list *timer);
	232
	233	/* br.c */
	234	extern struct net_bridge_fdb_entry (br_fdb_get_hook)(struct net_bridge *br,
	235	unsigned char *addr);
	236	extern void (br_fdb_put_hook)(struct net_bridge_fdb_entry ent);
	237
	238
11dc1f36 SH	239	/* br_netlink.c */
	240	extern void br_netlink_init(void);
	241	extern void br_netlink_fini(void);
	242	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	243
1da177e4 LT	244	#ifdef CONFIG_SYSFS
1da177e4 LT	245	/* br_sysfs_if.c */
bab1deea	246	extern struct sysfs_ops brport_sysfs_ops;
1da177e4	247	extern int br_sysfs_addif(struct net_bridge_port *p);
1da177e4 LT	248
	249	/* br_sysfs_br.c */
	250	extern int br_sysfs_addbr(struct net_device *dev);
	251	extern void br_sysfs_delbr(struct net_device *dev);
	252
	253	#else
	254
	255	#define br_sysfs_addif(p) (0)
1da177e4 LT	256	#define br_sysfs_addbr(dev) (0)
	257	#define br_sysfs_delbr(dev) do { } while(0)
	258	#endif /* CONFIG_SYSFS */
	259
	260	#endif