os_port.h

用于嵌入式系统的TCP/IP协议栈及若干服务

/*
*            Copyright (c) 1998-2001 by NETsilicon Inc.
*
*  This software is copyrighted by and is the sole property of
*  NETsilicon.  All rights, title, ownership, or other interests
*  in the software remain the property of NETsilicon.  This
*  software may only be used in accordance with the corresponding
*  license agreement.  Any unauthorized use, duplication, transmission,
*  distribution, or disclosure of this software is expressly forbidden.
*
*  This Copyright notice may not be removed or modified without prior
*  written consent of NETsilicon.
*
*  NETsilicon, reserves the right to modify this software
*  without notice.
*
*  NETsilicon
*  411 Waverley Oaks Road                  USA 781.647.1234
*  Suite 227                               http://www.netsilicon.com
*  Waltham, MA 02452                       [e-mail]
*
*************************************************************************
*  $Name: Fusion 6.52 Fusion 6.51 $
*  $Date: 2002/01/31 17:21:28 $
*  $Source: M:/psisrc/routing/incl/rcs/os_port.h $
*  $Revision: 1.9 $
*************************************************************************
*  File Description:  OSPF - target platform specific definitions  
*************************************************************************/


#define PROTO 1
#define PENT_BSIZE		   512
#define PENT_MAXBLK         16

/* used for allocations, value used in pdus is settable */

/* size of hashing tables */
/* we avoid division, so table size is binary number */
#define NBR_HASH_BITS       4
#define NBR_HASHES          (1 << NBR_HASH_BITS)
#define LSD_HASH_BITS       4
#define LSD_HASHES          (1 << LSD_HASH_BITS)
#define OS_CIRC_HASH_BITS   1
#define OS_CIRC_HASHES      (1 << CIRC_HASH_BITS)

/* true if virtual links to all area borders should
be automatically created when an area border router
is found.
*/ 
#define DEF_AUTO_VLINK	    0

#define ALL_METRICS         0       /* support all routing metrics */



/* true if multiple paths are supported */
#define LOAD_SHARE          0
#if LOAD_SHARE
#define MAX_MSPLIT          3
#else
#define MAX_MSPLIT          1
#endif /* LOAD_SHARE */

/* set true if a disabled circuit is considered in the ospf
   domain, otherwise set false. if false, disabled circ
   results in ospf extern for that circ.
*/
#define OSPF_DISABLED_IN_DOMAIN  0

/* MEMORY ALLOCATION MACROS */

#ifndef OSPF_MALLOC
#define OSPF_MALLOC(a) OS_MALLOC(a,1)
#endif
#ifndef OSPF_FREE
#define OSPF_FREE	OS_FREE
#endif

/* alloc output frame */
#define ospfOfAlloc(len)        ospf_oframe_alloc(len)  /* returns ibd_pt*/
#define ospfOfFree(ptr)         ospf_oframe_free(ptr)

/* free an input packet */
#define ospfIfFree(ptr)        

#define ospfNbrAlloc(len)			(Neighbor *)OSPF_MALLOC(len) /* adj structure */
#define ospfNbrFree(ptr)			OSPF_FREE(ptr)

#define ospfNodeAlloc()				OSPF_MALLOC(sizeof(OSPF_NODE))

#define ospfCircAlloc()   			OSPF_MALLOC(sizeof(OS_CIRC))
#define ospfCircFree(ptr)    		OSPF_FREE(ptr)


/* link state pdus */
#define ospfLsaAlloc(len)       OSPF_MALLOC(len)
#define ospfLsaFree(ptr)        OSPF_FREE(ptr)

#define ospfRouteAlloc(len)     OSPF_MALLOC(len) /* route hash*/
#define ospfRouteFree(ptr)      OSPF_FREE(ptr)


/* various lsp structures */
#define ospfLsdAlloc(len)       OSPF_MALLOC(len)
#define ospfLsdFree(ptr)   	  OSPF_FREE(ptr)

#define ospfTimerAlloc()		  OSPF_MALLOC(sizeof(OTIMER))
#define ospfTimerFree(ptr)	  OSPF_FREE(ptr)

#define ospfCRAlloc()		  OSPF_MALLOC(sizeof(CFG_RANGE))
#define ospfCRFree(ptr)		  OSPF_FREE(ptr)

#define ospfAreaAlloc()		  OSPF_MALLOC(sizeof(AREA))
#define ospfAreaFree(ptr)	  OSPF_FREE(ptr)

#define ospfNbmaAlloc()		  OSPF_MALLOC(sizeof(NBMA_DST))
#define ospfNbmaFree(ptr)	  OSPF_FREE(ptr)

#define ospfHostRtAlloc()	  OSPF_MALLOC(sizeof(HOST_RT))
#define ospfHostRtFree(ptr)	  OSPF_FREE(ptr)

#define ospfDBReqBlkAlloc(s)   OSPF_MALLOC(s)
#define ospfDBReqBlkFree(ptr)  OSPF_FREE(ptr)

#define ospfRetransBlkAlloc(s)  OSPF_MALLOC(s)
#define ospfRetransBlkFree(ptr) OSPF_FREE(ptr)

#define ospfAcknodeAlloc(s) (lsa_ack*)OSPF_MALLOC(s);
#define ospfAcknodeFree(ptr) OSPF_FREE(ptr)

#define ospf_db_packet_alloc(s) OSPF_MALLOC(s)
#define ospf_db_packet_free(p)  OSPF_FREE(p)

#define osDelBlkAlloc(s)		(OSDELBLK *)OSPF_MALLOC(s)
#define osDelBlkFree(p)		OSPF_FREE(p)

/* NOTE: this mem copy assumes a 0 len copy is valid !!! */
#define ospfCopyMem(xdst,xsrc,xlen)  rrCopyMem((byte *)(xdst),(byte *)(xsrc),xlen)

#define ospfFillMem(xdst,xdata,xlen)   rrFillMem((byte *)xdst,xdata,xlen) /*fill */

#define ospfCmpMem(xdst,xsrc,xlen)  rrCmpMem((byte *)(xdst),(byte *)(xsrc),xlen)

/* proto defs moved to rrport.h */
#define ospfLink rrLink
#define ospfGenLink rrGenLink
#define ospfULink rrULink


/* byte access macros moved to rrport.h */
#define n2rripa(xpdua) (rripa)uns_p2l(xpdua)
#define rripa2n(xpdua,xval)  uns_l2p((xpdua),(xval))


#define TRACE_NBR(x)	if(ospfNode->n_trnbr) os_printf x
#define TRACE_LSA(x)	if(ospfNode->n_trlsa) os_printf x
#define TRACE_DR(x)		if(ospfNode->n_trdr) os_printf x
#ifndef TRACE_DEF_NBR
#define TRACE_DEF_NBR	0
#endif
#ifndef TRACE_DEF_DR
#define TRACE_DEF_DR	0
#endif
#ifndef TRACE_DEF_LSA
#define TRACE_DEF_LSA	0
#endif


/* min time between spf runs */
#define OSPF_SPF_HOLD	3

/* number of vertices in spf to traverse before returning.
   spf will be broken into "chunks" of this size, one
   chunk being executed per tic.
*/
#define OSPF_SUSPEND_CNT 5000