kmacbr.h

以太网交换机协议平台stp协议的设计与实现源代码。

/*
 * $Log:: /OEM Source Code/Spantree/kmacbr $
 * 
 * 1     12/04/98 2:36p Release Engineer
 * code cleanup, bug fixes, code style
 * changes, linted, system level test
 * STP v4.3.0
 * 
 * 2     3/27/96 7:07p Ross
 * Initial check in with source safe
 * 
 * 1     2/06/96 11:06p Ross
 * Adding new version control
*/
/*	$Modname: kmacbr.h$  $version: 1.20$      $date: 03/31/95$   */
/*
* 	$lgb$
1.0 01/05/92 ross
1.1 01/25/92 ross change RX_PACKET_STATE to handle packet recognized but not forwarded (filtering case).
1.2 07/30/92 ross
1.3 07/30/92 ross
1.4 07/30/92 ross
1.5 08/05/92 ross
1.6 08/21/92 ross
1.7 08/22/92 ross Added support for multiple instances of stp_class
1.8 11/23/92 ross changed ETHERNET_ADDRESS to MAC_ADDRESS to appear more generic (cosmetic)
1.9 01/15/93 ross changed timer constants, since they were off by 256.  Path cost should have been 100 - a typo.
1.10 01/15/93 ross
1.11 01/20/93 ross
1.12 01/29/93 ross changed constants in macbrrx.c and macbrdb.c to better match snmp, fixed frame relay bug.
1.13 02/12/93 ross added NUMBER_OF_USER_DEFINED_STP_PORTS.
1.14 03/29/93 ross added more snmp stuff
1.15 07/16/93 ross added some mib statistics
1.16 10/28/93 ross deleted an unnecessary comment.
1.17 12/29/93 ross big endian fix.  Courtesy of Rick.
1.18 12/30/93 ross moved SORT_RETURN enum to kstart.h
1.19 06/15/94 ross cosmetic changes and snmp access routines.
1.20 03/31/95 ross Changes for new rwutils library.
* 	$lge$
*/
/************************************************************************/
/*	Copyright (C) 1989-1998 RouterWare, Inc. 										*/
/*	Unpublished - rights reserved under the Copyright Laws of the			*/
/*	United States.  Use, duplication, or disclosure by the 					*/
/*	Government is subject to restrictions as set forth in 					*/
/*	subparagraph (c)(1)(ii) of the Rights in Technical Data and 			*/
/*	Computer Software clause at 252.227-7013.										*/
/*	RouterWare, Inc., 3961 MacArthur Blvd. Suite 212, Newport Beach Ca   */
/************************************************************************/
#if !defined (USER_DEFINED_STP_PORTS)
		#define 	NUMBER_OF_SPANNING_TREE_PORTS	16
#endif

#define	BROADCAST_FRAME_RELAY_DLCI 0xffff

#if defined (BIG_ENDIAN)
		#if defined (SIMPLE_BRIDGE)
		#define	BIG_ENDIAN_CONSTANT(ushort) ushort
		#define	swap(a) a
		#define	swap_long(a) a
      #endif
#else
	#define	BIG_ENDIAN_CONSTANT(ushort) (((0x00ff & ushort) << 8) | (ushort >> 8))
#endif

#if defined (SMALL_ENTRY)

	#define NULL_USHORT_ENTRY 0xffff

#endif

#define	ROOT_PORT_NUMBER 0
#define	NO_PORT	0
#define	HIGHEST_PORT_PRIORITY 0x00
#define	HIGHEST_BRIDGE_PRIORITY 0x0000

#define	PORT_PRIORITY	0x80	 
#define	BRIDGE_PRIORITY	0x8000 

#define	MAXIMUM_BRIDGE_DIAMETER 7
#define	MAXIMUM_BRIDGE_TRANSIT_DELAY	4
#define	MAXIMUM_BPDU_TRANSMISSION_DELAY	4
#define	MAXIMUM_MESSAGE_AGE_INCREMENT_OVERESTIMATE	4

#define	ETHERNET_PATH_COST	(1000/10) /* 1000/x MB/s */

#define	TIMER_GRANULARITY 0x100 /* used for timer values */

/* maximum age of rxed protocol information before it is discarded */

#define	MAXIMUM_AGE				(20	* TIMER_GRANULARITY)

/* time between hello configuration BPDU's */

#define	HELLO_TIME				(2 * TIMER_GRANULARITY)

/* time period elapsing between the transmission of config BPDU'S through a given bridge port */
#define HOLD_TIME             (1 * TIMER_GRANULARITY)


/* time spent between states, also used for aging dynamic entries in the filtering database when the topology change flag is TRUE in protocol messages received from the root*/

#define	FORWARD_DELAY_TIME	(15	* TIMER_GRANULARITY)

#define	MESSAGE_AGE_INCREMENT	(1 * TIMER_GRANULARITY)

#define	AGEING_TIME_FOR_FILTERING_DATABASE	 300

#define NUMBER_OF_ENTRIES_PER_TIMER_CHECK	(NUMBER_OF_FILTERING_DATABASE_ENTRIES/CLOCK_TICKS_PER_SECOND) /* clocks per second */

#define	VERSION_ID			0x00

#define DEFAULT_NUMBER_OF_FILTERING_DATABASE_ENTRIES 	8000	

#define DEFAULT_NUMBER_OF_HASH_TABLE_ENTRIES 			 256		

#define DEFAULT_PORT_MAXIMUM_FRAME_SIZE		 			 1518		


enum	BPDU_TYPE
{
	CONFIGURATION
	/* TOPOLOGY_CHANGE = 0x80 */
};

#define TOPOLOGY_CHANGE 0x80 /* stuck here because of compiler error, needs to be 1 byte wide */

#define	FORWARDING_STATION_TIME_LIMIT	(60 * 2) 


enum FD_TABLE_ENTRY_TYPE
{
/* SNMP types */

	OTHER_TABLE_ENTRY, 
	INVALID_TABLE_ENTRY,
	PERMANENT_TABLE_ENTRY,
	DELETE_ENTRY_ON_RESET,
	DELETE_ENTRY_ON_TIMEOUT,
	FILTER_ADDRESS,

/* LEARNED is the same as DELETE_ENTRY_ON_TIMEOUT */
/* SELF is the same as PERMANENT_ENTRY */
/* MANAGEMENT is the same as DELETE_ENTRY_ON_RESET */

/* return types */

	OUT_OF_DATABASE_ENTRIES,
	NOT_IN_DATABASE,
	IN_DATABASE_SAME_PORT,
	IN_DATABASE_DIFFERENT_PORT,
	FILTER_ON_DESTINATION_ADDRESS,
	FILTER_ON_SOURCE_ADDRESS
};

enum	TIMER_COMMAND	
{ 
	STOP_TIMER = 0,
	START_TIMER = 1 
};

enum	PORT_STATE
{
	DISABLED,
	LISTENING,
	LEARNING,
	FORWARDING,
	BLOCKING
};

enum	ESTIMATE_TIMER_BOUNDS
{
	LOWER_TIMER_BOUND  = 18/2, TIMER_BOUND_DEFAULT = 18, UPPER_TIMER_BOUND = 36
};

enum	PORT_TYPE
{
	_8023,_8025
};

#define	MULTICAST_BROADCAST_MASK_BIT	0x00000001
#define	NO_MULTICAST_OR_BROADCAST	0x00000000

#define  SIZE_OF_HASH_KEY USHORT
#define	NUMBER_OF_FILTERING_DATABASE_ENTRIES 0x00004000 /* 16k */
#define	NUMBER_OF_ENTRIES_IN_HASH_TABLE 0x00010000 /* 64k */

enum STP_PRINTF_GROUPS
{
	STP_ALGORITHM_PRINTF,
	STP_MEMORY_PRINTF,
	STP_ALARM_PRINTF,
	STP_SNMP_PRINTF,
	STP_DATA_PRINTF	 
};

enum STP_BASE_TYPE
{
	UNKNOWN,
	TRANSPARENT,
	SOURCE_ROUTING_,
	SRT
};

enum STP_TYPE
{
	DEC_LAN_BRIDGE_100 = 2,
	IEEE_8021D = 3
};