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/*
* Linux ethernet bridge
*
* Authors:
* Lennert Buytenhek <buytenh@gnu.org>
*
* $Id: br_private.h,v 1.6.2.1 2001/12/24 00:59:27 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>
#include "br_private_timer.h"
#define BR_HASH_BITS 8
#define BR_HASH_SIZE (1 << BR_HASH_BITS)
#define BR_HOLD_TIME (1*HZ)
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];
unsigned char pad[2];
};
struct net_bridge_fdb_entry
{
struct net_bridge_fdb_entry *next_hash;
struct net_bridge_fdb_entry **pprev_hash;
atomic_t use_count;
mac_addr addr;
struct net_bridge_port *dst;
unsigned long ageing_timer;
unsigned is_local:1;
unsigned is_static:1;
};
struct net_bridge_port
{
struct net_bridge_port *next;
struct net_bridge *br;
struct net_device *dev;
int port_no;
/* STP */
port_id port_id;
int state;
int path_cost;
bridge_id designated_root;
int designated_cost;
bridge_id designated_bridge;
port_id designated_port;
unsigned topology_change_ack:1;
unsigned config_pending:1;
int priority;
struct br_timer forward_delay_timer;
struct br_timer hold_timer;
struct br_timer message_age_timer;
};
struct net_bridge
{
struct net_bridge *next;
rwlock_t lock;
struct net_bridge_port *port_list;
struct net_device dev;
struct net_device_stats statistics;
rwlock_t hash_lock;
struct net_bridge_fdb_entry *hash[BR_HASH_SIZE];
struct timer_list tick;
/* STP */
bridge_id designated_root;
int root_path_cost;
int root_port;
int max_age;
int hello_time;
int forward_delay;
bridge_id bridge_id;
int bridge_max_age;
int bridge_hello_time;
int bridge_forward_delay;
unsigned stp_enabled:1;
unsigned topology_change:1;
unsigned topology_change_detected:1;
struct br_timer hello_timer;
struct br_timer tcn_timer;
struct br_timer topology_change_timer;
struct br_timer gc_timer;
int ageing_time;
int gc_interval;
};
extern struct notifier_block br_device_notifier;
extern unsigned char bridge_ula[6];
/* br.c */
extern void br_dec_use_count(void);
extern void br_inc_use_count(void);
/* 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_changeaddr(struct net_bridge_port *p,
unsigned char *newaddr);
extern void br_fdb_cleanup(struct net_bridge *br);
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,
unsigned char *addr);
extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
extern int br_fdb_get_entries(struct net_bridge *br,
unsigned char *_buf,
int maxnum,
int offset);
extern void br_fdb_insert(struct net_bridge *br,
struct net_bridge_port *source,
unsigned char *addr,
int is_local);
/* br_forward.c */
extern void br_deliver(struct net_bridge_port *to,
struct sk_buff *skb);
extern void br_forward(struct net_bridge_port *to,
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(char *name);
extern int br_del_bridge(char *name);
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_get_bridge_ifindices(int *indices,
int num);
extern void br_get_port_ifindices(struct net_bridge *br,
int *ifindices);
/* br_input.c */
extern void br_handle_frame(struct sk_buff *skb);
/* br_ioctl.c */
extern void br_call_ioctl_atomic(void (*fn)(void));
extern int br_ioctl(struct net_bridge *br,
unsigned int cmd,
unsigned long arg0,
unsigned long arg1,
unsigned long arg2);
extern int br_ioctl_deviceless_stub(unsigned long arg);
/* br_stp.c */
extern int br_is_root_bridge(struct net_bridge *br);
extern struct net_bridge_port *br_get_port(struct net_bridge *br,
int port_no);
extern void br_init_port(struct net_bridge_port *p);
extern port_id br_make_port_id(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_set_bridge_priority(struct net_bridge *br,
int newprio);
extern void br_stp_set_port_priority(struct net_bridge_port *p,
int newprio);
extern void br_stp_set_path_cost(struct net_bridge_port *p,
int path_cost);
/* br_stp_bpdu.c */
extern void br_stp_handle_bpdu(struct sk_buff *skb);
#endif
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