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phoenix |
/*
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* Linux ethernet bridge
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*
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* Authors:
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* Lennert Buytenhek <buytenh@gnu.org>
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*
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* $Id: br_private.h,v 1.1.1.1 2004-04-15 01:16:27 phoenix Exp $
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#ifndef _BR_PRIVATE_H
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#define _BR_PRIVATE_H
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#include <linux/netdevice.h>
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#include <linux/miscdevice.h>
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#include <linux/if_bridge.h>
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#include "br_private_timer.h"
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#define BR_HASH_BITS 8
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#define BR_HASH_SIZE (1 << BR_HASH_BITS)
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#define BR_HOLD_TIME (1*HZ)
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typedef struct bridge_id bridge_id;
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typedef struct mac_addr mac_addr;
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typedef __u16 port_id;
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struct bridge_id
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{
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unsigned char prio[2];
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unsigned char addr[6];
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};
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struct mac_addr
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{
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unsigned char addr[6];
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unsigned char pad[2];
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};
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struct net_bridge_fdb_entry
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{
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struct net_bridge_fdb_entry *next_hash;
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struct net_bridge_fdb_entry **pprev_hash;
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atomic_t use_count;
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mac_addr addr;
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struct net_bridge_port *dst;
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unsigned long ageing_timer;
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unsigned is_local:1;
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unsigned is_static:1;
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};
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struct net_bridge_port
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{
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struct net_bridge_port *next;
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struct net_bridge *br;
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struct net_device *dev;
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int port_no;
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/* STP */
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port_id port_id;
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int state;
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int path_cost;
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bridge_id designated_root;
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int designated_cost;
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bridge_id designated_bridge;
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port_id designated_port;
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unsigned topology_change_ack:1;
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unsigned config_pending:1;
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int priority;
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struct br_timer forward_delay_timer;
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struct br_timer hold_timer;
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struct br_timer message_age_timer;
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};
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struct net_bridge
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{
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struct net_bridge *next;
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rwlock_t lock;
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struct net_bridge_port *port_list;
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struct net_device dev;
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struct net_device_stats statistics;
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rwlock_t hash_lock;
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struct net_bridge_fdb_entry *hash[BR_HASH_SIZE];
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struct timer_list tick;
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/* STP */
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bridge_id designated_root;
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int root_path_cost;
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int root_port;
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int max_age;
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int hello_time;
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int forward_delay;
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bridge_id bridge_id;
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int bridge_max_age;
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int bridge_hello_time;
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int bridge_forward_delay;
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unsigned stp_enabled:1;
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unsigned topology_change:1;
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unsigned topology_change_detected:1;
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struct br_timer hello_timer;
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struct br_timer tcn_timer;
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struct br_timer topology_change_timer;
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struct br_timer gc_timer;
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int ageing_time;
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int gc_interval;
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};
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extern struct notifier_block br_device_notifier;
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extern unsigned char bridge_ula[6];
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/* br.c */
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extern void br_dec_use_count(void);
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extern void br_inc_use_count(void);
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/* br_device.c */
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extern void br_dev_setup(struct net_device *dev);
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extern int br_dev_xmit(struct sk_buff *skb, struct net_device *dev);
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/* br_fdb.c */
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extern void br_fdb_changeaddr(struct net_bridge_port *p,
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unsigned char *newaddr);
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extern void br_fdb_cleanup(struct net_bridge *br);
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extern void br_fdb_delete_by_port(struct net_bridge *br,
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struct net_bridge_port *p);
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extern struct net_bridge_fdb_entry *br_fdb_get(struct net_bridge *br,
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unsigned char *addr);
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extern void br_fdb_put(struct net_bridge_fdb_entry *ent);
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extern int br_fdb_get_entries(struct net_bridge *br,
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unsigned char *_buf,
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int maxnum,
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int offset);
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extern void br_fdb_insert(struct net_bridge *br,
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struct net_bridge_port *source,
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unsigned char *addr,
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int is_local);
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/* br_forward.c */
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extern void br_deliver(struct net_bridge_port *to,
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struct sk_buff *skb);
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extern void br_forward(struct net_bridge_port *to,
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struct sk_buff *skb);
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extern void br_flood_deliver(struct net_bridge *br,
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struct sk_buff *skb,
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int clone);
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extern void br_flood_forward(struct net_bridge *br,
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struct sk_buff *skb,
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int clone);
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/* br_if.c */
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extern int br_add_bridge(char *name);
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extern int br_del_bridge(char *name);
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extern int br_add_if(struct net_bridge *br,
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struct net_device *dev);
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extern int br_del_if(struct net_bridge *br,
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struct net_device *dev);
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extern int br_get_bridge_ifindices(int *indices,
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int num);
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extern void br_get_port_ifindices(struct net_bridge *br,
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int *ifindices);
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/* br_input.c */
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extern void br_handle_frame(struct sk_buff *skb);
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/* br_ioctl.c */
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extern void br_call_ioctl_atomic(void (*fn)(void));
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extern int br_ioctl(struct net_bridge *br,
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unsigned int cmd,
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unsigned long arg0,
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unsigned long arg1,
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unsigned long arg2);
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extern int br_ioctl_deviceless_stub(unsigned long arg);
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/* br_stp.c */
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extern int br_is_root_bridge(struct net_bridge *br);
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extern struct net_bridge_port *br_get_port(struct net_bridge *br,
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int port_no);
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extern void br_init_port(struct net_bridge_port *p);
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extern port_id br_make_port_id(struct net_bridge_port *p);
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extern void br_become_designated_port(struct net_bridge_port *p);
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/* br_stp_if.c */
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extern void br_stp_enable_bridge(struct net_bridge *br);
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extern void br_stp_disable_bridge(struct net_bridge *br);
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extern void br_stp_enable_port(struct net_bridge_port *p);
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extern void br_stp_disable_port(struct net_bridge_port *p);
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extern void br_stp_recalculate_bridge_id(struct net_bridge *br);
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extern void br_stp_set_bridge_priority(struct net_bridge *br,
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int newprio);
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extern void br_stp_set_port_priority(struct net_bridge_port *p,
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int newprio);
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extern void br_stp_set_path_cost(struct net_bridge_port *p,
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int path_cost);
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/* br_stp_bpdu.c */
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extern int br_stp_handle_bpdu(struct sk_buff *skb);
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#endif
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