[linux-2.6-block.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/miscdevice.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)

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 work_struct		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;

	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 unsigned char bridge_ula[6];

/* 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,
			   struct net_bridge_port *p);
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 */
extern int br_netfilter_init(void);
extern void br_netfilter_fini(void);

/* 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_handle_bpdu(struct sk_buff *skb);

/* 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);


#ifdef CONFIG_SYSFS
/* br_sysfs_if.c */
extern int br_sysfs_addif(struct net_bridge_port *p);
extern void br_sysfs_removeif(struct net_bridge_port *p);
extern void br_sysfs_freeif(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_removeif(p)	do { } while(0)
#define br_sysfs_freeif(p)	kfree(p)
#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>
	19	#include <linux/miscdevice.h>
	20	#include <linux/if_bridge.h>
	21
	22	#define BR_HASH_BITS 8
	23	#define BR_HASH_SIZE (1 << BR_HASH_BITS)
	24
	25	#define BR_HOLD_TIME (1*HZ)
	26
	27	#define BR_PORT_BITS 10
	28	#define BR_MAX_PORTS (1<<BR_PORT_BITS)
	29
4433f420 SH	30	#define BR_PORT_DEBOUNCE (HZ/10)
4433f420 SH	31
1da177e4 LT	32	typedef struct bridge_id bridge_id;
	33	typedef struct mac_addr mac_addr;
	34	typedef __u16 port_id;
	35
	36	struct bridge_id
	37	{
	38	unsigned char prio[2];
	39	unsigned char addr[6];
	40	};
	41
	42	struct mac_addr
	43	{
	44	unsigned char addr[6];
	45	};
	46
	47	struct net_bridge_fdb_entry
	48	{
	49	struct hlist_node hlist;
	50	struct net_bridge_port *dst;
	51
	52	struct rcu_head rcu;
	53	atomic_t use_count;
	54	unsigned long ageing_timer;
	55	mac_addr addr;
	56	unsigned char is_local;
	57	unsigned char is_static;
	58	};
	59
	60	struct net_bridge_port
	61	{
	62	struct net_bridge *br;
	63	struct net_device *dev;
	64	struct list_head list;
	65
	66	/* STP */
	67	u8 priority;
	68	u8 state;
	69	u16 port_no;
	70	unsigned char topology_change_ack;
	71	unsigned char config_pending;
	72	port_id port_id;
	73	port_id designated_port;
	74	bridge_id designated_root;
	75	bridge_id designated_bridge;
	76	u32 path_cost;
	77	u32 designated_cost;
	78
	79	struct timer_list forward_delay_timer;
	80	struct timer_list hold_timer;
	81	struct timer_list message_age_timer;
	82	struct kobject kobj;
4433f420	83	struct work_struct carrier_check;
1da177e4 LT	84	struct rcu_head rcu;
	85	};
	86
	87	struct net_bridge
	88	{
	89	spinlock_t lock;
	90	struct list_head port_list;
	91	struct net_device *dev;
	92	struct net_device_stats statistics;
	93	spinlock_t hash_lock;
	94	struct hlist_head hash[BR_HASH_SIZE];
	95	struct list_head age_list;
edb5e46f	96	unsigned long feature_mask;
1da177e4 LT	97
	98	/* STP */
	99	bridge_id designated_root;
	100	bridge_id bridge_id;
	101	u32 root_path_cost;
	102	unsigned long max_age;
	103	unsigned long hello_time;
	104	unsigned long forward_delay;
	105	unsigned long bridge_max_age;
	106	unsigned long ageing_time;
	107	unsigned long bridge_hello_time;
	108	unsigned long bridge_forward_delay;
	109
	110	u16 root_port;
	111	unsigned char stp_enabled;
	112	unsigned char topology_change;
	113	unsigned char topology_change_detected;
	114
	115	struct timer_list hello_timer;
	116	struct timer_list tcn_timer;
	117	struct timer_list topology_change_timer;
	118	struct timer_list gc_timer;
	119	struct kobject ifobj;
	120	};
	121
	122	extern struct notifier_block br_device_notifier;
	123	extern const unsigned char bridge_ula[6];
	124
	125	/* called under bridge lock */
	126	static inline int br_is_root_bridge(const struct net_bridge *br)
	127	{
	128	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	129	}
	130
	131
	132	/* br_device.c */
	133	extern void br_dev_setup(struct net_device *dev);
	134	extern int br_dev_xmit(struct sk_buff skb, struct net_device dev);
	135
	136	/* br_fdb.c */
	137	extern void br_fdb_init(void);
	138	extern void br_fdb_fini(void);
	139	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	140	const unsigned char *newaddr);
	141	extern void br_fdb_cleanup(unsigned long arg);
	142	extern void br_fdb_delete_by_port(struct net_bridge *br,
	143	struct net_bridge_port *p);
	144	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
	145	const unsigned char *addr);
	146	extern struct net_bridge_fdb_entry br_fdb_get(struct net_bridge br,
	147	unsigned char *addr);
	148	extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
	149	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
	150	unsigned long count, unsigned long off);
	151	extern int br_fdb_insert(struct net_bridge *br,
	152	struct net_bridge_port *source,
	153	const unsigned char *addr);
	154	extern void br_fdb_update(struct net_bridge *br,
	155	struct net_bridge_port *source,
	156	const unsigned char *addr);
	157
	158	/* br_forward.c */
	159	extern void br_deliver(const struct net_bridge_port *to,
	160	struct sk_buff *skb);
161	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
162	extern void br_forward(const struct net_bridge_port *to,
163	struct sk_buff *skb);
164	extern int br_forward_finish(struct sk_buff *skb);
165	extern void br_flood_deliver(struct net_bridge *br,
166	struct sk_buff *skb,
167	int clone);
168	extern void br_flood_forward(struct net_bridge *br,
169	struct sk_buff *skb,
170	int clone);
171
172	/* br_if.c */
173	extern int br_add_bridge(const char *name);
174	extern int br_del_bridge(const char *name);
175	extern void br_cleanup_bridges(void);
176	extern int br_add_if(struct net_bridge *br,
177	struct net_device *dev);
178	extern int br_del_if(struct net_bridge *br,
179	struct net_device *dev);
180	extern int br_min_mtu(const struct net_bridge *br);
81d35307	181	extern void br_features_recompute(struct net_bridge *br);
1da177e4 LT	182
	183	/* br_input.c */
	184	extern int br_handle_frame_finish(struct sk_buff *skb);
	185	extern int br_handle_frame(struct net_bridge_port p, struct sk_buff *pskb);
	186
	187	/* br_ioctl.c */
	188	extern int br_dev_ioctl(struct net_device dev, struct ifreq rq, int cmd);
	189	extern int br_ioctl_deviceless_stub(unsigned int cmd, void __user *arg);
	190
	191	/* br_netfilter.c */
	192	extern int br_netfilter_init(void);
	193	extern void br_netfilter_fini(void);
	194
	195	/* br_stp.c */
	196	extern void br_log_state(const struct net_bridge_port *p);
	197	extern struct net_bridge_port br_get_port(struct net_bridge br,
	198	u16 port_no);
	199	extern void br_init_port(struct net_bridge_port *p);
	200	extern void br_become_designated_port(struct net_bridge_port *p);
	201
	202	/* br_stp_if.c */
	203	extern void br_stp_enable_bridge(struct net_bridge *br);
	204	extern void br_stp_disable_bridge(struct net_bridge *br);
	205	extern void br_stp_enable_port(struct net_bridge_port *p);
	206	extern void br_stp_disable_port(struct net_bridge_port *p);
	207	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	208	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	209	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	210	u16 newprio);
	211	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	212	u8 newprio);
	213	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	214	u32 path_cost);
	215	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	216
	217	/* br_stp_bpdu.c */
	218	extern int br_stp_handle_bpdu(struct sk_buff *skb);
	219
	220	/* br_stp_timer.c */
	221	extern void br_stp_timer_init(struct net_bridge *br);
	222	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	223	extern unsigned long br_timer_value(const struct timer_list *timer);
	224
	225	/* br.c */
	226	extern struct net_bridge_fdb_entry (br_fdb_get_hook)(struct net_bridge *br,
	227	unsigned char *addr);
	228	extern void (br_fdb_put_hook)(struct net_bridge_fdb_entry ent);
	229
	230
	231	#ifdef CONFIG_SYSFS
	232	/* br_sysfs_if.c */
	233	extern int br_sysfs_addif(struct net_bridge_port *p);
	234	extern void br_sysfs_removeif(struct net_bridge_port *p);
	235	extern void br_sysfs_freeif(struct net_bridge_port *p);
	236
	237	/* br_sysfs_br.c */
	238	extern int br_sysfs_addbr(struct net_device *dev);
	239	extern void br_sysfs_delbr(struct net_device *dev);
	240
	241	#else
	242
	243	#define br_sysfs_addif(p) (0)
	244	#define br_sysfs_removeif(p) do { } while(0)
	245	#define br_sysfs_freeif(p) kfree(p)
	246	#define br_sysfs_addbr(dev) (0)
	247	#define br_sysfs_delbr(dev) do { } while(0)
	248	#endif /* CONFIG_SYSFS */
	249
	250	#endif