br_private_stp.h

来自「Linux内核源代码 为压缩文件 是<<Linux内核>&gt」· C头文件 代码 · 共 54 行

/*
 *	Linux ethernet bridge
 *
 *	Authors:
 *	Lennert Buytenhek		<[e-mail]>
 *
 *	$Id: br_private_stp.h,v 1.2 2000/10/30 22:03:20 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_STP_H
#define _BR_PRIVATE_STP_H

#define BPDU_TYPE_CONFIG 0
#define BPDU_TYPE_TCN 0x80

struct br_config_bpdu
{
	unsigned	topology_change:1;
	unsigned	topology_change_ack:1;
	bridge_id	root;
	int		root_path_cost;
	bridge_id	bridge_id;
	port_id		port_id;
	int		message_age;
	int		max_age;
	int		hello_time;
	int		forward_delay;
};

/* br_stp.c */
void br_become_root_bridge(struct net_bridge *br);
void br_config_bpdu_generation(struct net_bridge *);
void br_configuration_update(struct net_bridge *);
int  br_is_designated_port(struct net_bridge_port *p);
int  br_is_root_bridge(struct net_bridge *br);
void br_port_state_selection(struct net_bridge *);
void br_received_config_bpdu(struct net_bridge_port *p, struct br_config_bpdu *bpdu);
void br_received_tcn_bpdu(struct net_bridge_port *p);
void br_tick(unsigned long __data);
void br_transmit_config(struct net_bridge_port *p);
void br_transmit_tcn(struct net_bridge *br);
void br_topology_change_detection(struct net_bridge *br);

/* br_stp_bpdu.c */
void br_send_config_bpdu(struct net_bridge_port *, struct br_config_bpdu *);
void br_send_tcn_bpdu(struct net_bridge_port *);

#endif