[deliverable/linux.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_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 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 void br_port_carrier_check(struct net_bridge_port *p);
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 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 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
11dc1f36	29	#define BR_VERSION "2.2"
8cbb512e	30
1da177e4 LT	31	typedef struct bridge_id bridge_id;
	32	typedef struct mac_addr mac_addr;
	33	typedef __u16 port_id;
	34
	35	struct bridge_id
	36	{
	37	unsigned char prio[2];
	38	unsigned char addr[6];
	39	};
	40
	41	struct mac_addr
	42	{
	43	unsigned char addr[6];
	44	};
	45
	46	struct net_bridge_fdb_entry
	47	{
	48	struct hlist_node hlist;
	49	struct net_bridge_port *dst;
	50
	51	struct rcu_head rcu;
	52	atomic_t use_count;
	53	unsigned long ageing_timer;
	54	mac_addr addr;
	55	unsigned char is_local;
	56	unsigned char is_static;
	57	};
	58
	59	struct net_bridge_port
	60	{
	61	struct net_bridge *br;
	62	struct net_device *dev;
	63	struct list_head list;
	64
	65	/* STP */
	66	u8 priority;
	67	u8 state;
	68	u16 port_no;
	69	unsigned char topology_change_ack;
	70	unsigned char config_pending;
	71	port_id port_id;
	72	port_id designated_port;
	73	bridge_id designated_root;
	74	bridge_id designated_bridge;
	75	u32 path_cost;
	76	u32 designated_cost;
	77
	78	struct timer_list forward_delay_timer;
	79	struct timer_list hold_timer;
	80	struct timer_list message_age_timer;
	81	struct kobject kobj;
	82	struct rcu_head rcu;
	83	};
	84
	85	struct net_bridge
	86	{
	87	spinlock_t lock;
	88	struct list_head port_list;
	89	struct net_device *dev;
	90	struct net_device_stats statistics;
	91	spinlock_t hash_lock;
	92	struct hlist_head hash[BR_HASH_SIZE];
	93	struct list_head age_list;
edb5e46f	94	unsigned long feature_mask;
1da177e4 LT	95
	96	/* STP */
	97	bridge_id designated_root;
	98	bridge_id bridge_id;
	99	u32 root_path_cost;
	100	unsigned long max_age;
	101	unsigned long hello_time;
	102	unsigned long forward_delay;
	103	unsigned long bridge_max_age;
	104	unsigned long ageing_time;
	105	unsigned long bridge_hello_time;
	106	unsigned long bridge_forward_delay;
	107
fda93d92	108	u8 group_addr[ETH_ALEN];
1da177e4 LT	109	u16 root_port;
	110	unsigned char stp_enabled;
	111	unsigned char topology_change;
	112	unsigned char topology_change_detected;
	113
	114	struct timer_list hello_timer;
	115	struct timer_list tcn_timer;
	116	struct timer_list topology_change_timer;
	117	struct timer_list gc_timer;
	118	struct kobject ifobj;
	119	};
	120
	121	extern struct notifier_block br_device_notifier;
fda93d92	122	extern const u8 br_group_address[ETH_ALEN];
1da177e4 LT	123
	124	/* called under bridge lock */
	125	static inline int br_is_root_bridge(const struct net_bridge *br)
	126	{
	127	return !memcmp(&br->bridge_id, &br->designated_root, 8);
	128	}
	129
	130
	131	/* br_device.c */
	132	extern void br_dev_setup(struct net_device *dev);
	133	extern int br_dev_xmit(struct sk_buff skb, struct net_device dev);
	134
	135	/* br_fdb.c */
	136	extern void br_fdb_init(void);
	137	extern void br_fdb_fini(void);
	138	extern void br_fdb_changeaddr(struct net_bridge_port *p,
	139	const unsigned char *newaddr);
	140	extern void br_fdb_cleanup(unsigned long arg);
	141	extern void br_fdb_delete_by_port(struct net_bridge *br,
1a620698	142	const struct net_bridge_port *p, int do_all);
1da177e4 LT	143	extern struct net_bridge_fdb_entry __br_fdb_get(struct net_bridge br,
	144	const unsigned char *addr);
	145	extern struct net_bridge_fdb_entry br_fdb_get(struct net_bridge br,
	146	unsigned char *addr);
	147	extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
9d6f229f	148	extern int br_fdb_fillbuf(struct net_bridge br, void buf,
1da177e4 LT	149	unsigned long count, unsigned long off);
	150	extern int br_fdb_insert(struct net_bridge *br,
	151	struct net_bridge_port *source,
	152	const unsigned char *addr);
	153	extern void br_fdb_update(struct net_bridge *br,
	154	struct net_bridge_port *source,
	155	const unsigned char *addr);
	156
	157	/* br_forward.c */
	158	extern void br_deliver(const struct net_bridge_port *to,
	159	struct sk_buff *skb);
	160	extern int br_dev_queue_push_xmit(struct sk_buff *skb);
	161	extern void br_forward(const struct net_bridge_port *to,
	162	struct sk_buff *skb);
	163	extern int br_forward_finish(struct sk_buff *skb);
	164	extern void br_flood_deliver(struct net_bridge *br,
	165	struct sk_buff *skb,
	166	int clone);
	167	extern void br_flood_forward(struct net_bridge *br,
	168	struct sk_buff *skb,
	169	int clone);
	170
	171	/* br_if.c */
269def7c	172	extern void br_port_carrier_check(struct net_bridge_port *p);
1da177e4 LT	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 */
c0909713	192	#ifdef CONFIG_BRIDGE_NETFILTER
1da177e4 LT	193	extern int br_netfilter_init(void);
1da177e4 LT	194	extern void br_netfilter_fini(void);
c0909713 SH	195	#else
	196	#define br_netfilter_init() (0)
	197	#define br_netfilter_fini() do { } while(0)
	198	#endif
1da177e4 LT	199
	200	/* br_stp.c */
	201	extern void br_log_state(const struct net_bridge_port *p);
	202	extern struct net_bridge_port br_get_port(struct net_bridge br,
9d6f229f	203	u16 port_no);
1da177e4 LT	204	extern void br_init_port(struct net_bridge_port *p);
	205	extern void br_become_designated_port(struct net_bridge_port *p);
	206
	207	/* br_stp_if.c */
	208	extern void br_stp_enable_bridge(struct net_bridge *br);
	209	extern void br_stp_disable_bridge(struct net_bridge *br);
	210	extern void br_stp_enable_port(struct net_bridge_port *p);
	211	extern void br_stp_disable_port(struct net_bridge_port *p);
	212	extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
4505a3ef	213	extern void br_stp_change_bridge_id(struct net_bridge br, const unsigned char a);
1da177e4 LT	214	extern void br_stp_set_bridge_priority(struct net_bridge *br,
	215	u16 newprio);
	216	extern void br_stp_set_port_priority(struct net_bridge_port *p,
	217	u8 newprio);
	218	extern void br_stp_set_path_cost(struct net_bridge_port *p,
	219	u32 path_cost);
	220	extern ssize_t br_show_bridge_id(char buf, const struct bridge_id id);
	221
	222	/* br_stp_bpdu.c */
cf0f02d0 SH	223	extern int br_stp_rcv(struct sk_buff skb, struct net_device dev,
cf0f02d0 SH	224	struct packet_type pt, struct net_device orig_dev);
1da177e4 LT	225
	226	/* br_stp_timer.c */
	227	extern void br_stp_timer_init(struct net_bridge *br);
	228	extern void br_stp_port_timer_init(struct net_bridge_port *p);
	229	extern unsigned long br_timer_value(const struct timer_list *timer);
	230
	231	/* br.c */
	232	extern struct net_bridge_fdb_entry (br_fdb_get_hook)(struct net_bridge *br,
	233	unsigned char *addr);
	234	extern void (br_fdb_put_hook)(struct net_bridge_fdb_entry ent);
	235
	236
11dc1f36	237	/* br_netlink.c */
32fe21c0	238	extern int br_netlink_init(void);
11dc1f36 SH	239	extern void br_netlink_fini(void);
	240	extern void br_ifinfo_notify(int event, struct net_bridge_port *port);
	241
1da177e4 LT	242	#ifdef CONFIG_SYSFS
1da177e4 LT	243	/* br_sysfs_if.c */
bab1deea	244	extern struct sysfs_ops brport_sysfs_ops;
1da177e4	245	extern int br_sysfs_addif(struct net_bridge_port *p);
1da177e4 LT	246
	247	/* br_sysfs_br.c */
	248	extern int br_sysfs_addbr(struct net_device *dev);
	249	extern void br_sysfs_delbr(struct net_device *dev);
	250
	251	#else
	252
	253	#define br_sysfs_addif(p) (0)
1da177e4 LT	254	#define br_sysfs_addbr(dev) (0)
	255	#define br_sysfs_delbr(dev) do { } while(0)
	256	#endif /* CONFIG_SYSFS */
	257
	258	#endif