ipport.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: 2002/01/22 14:11:02 $
*  $Source: M:/psisrc/routing/incl/rcs/ipport.h $
*  $Revision: 1.11 $
*************************************************************************
*  File Description: platform specific definitions for IP/UDP/RIP
*************************************************************************/

/* NOTE: COMMENT OUT THE FOLLOWING LINES IF YOU ARE NOT
   USING THE ROUTING CODE WITH THE FUSION TCP/IP STACK.
*/
#include "std.h"
#include "fns_heap.h"
#define RR_MALLOC(a) OS_MALLOC(a,1)
extern u32 t_time;

#define RIP_GET_SYSTIME t_time
/**** END COMMENT OUT IF NOT USING FUSION ****/

/* In order for SNMP to do route aging there must be
   a way to get the system time since bootup and store it
   in the route entry.  RIP_GET_SYSTIME provides this
   mechanism.  
*/
#ifndef RIP_GET_SYSTIME
#define RIP_GET_SYSTIME 0
#endif

#include "rribd.h"

/* Not yet supported */
/* #define IP_LOAD_SHARE	*/
#define RR_RIP 1
#ifdef IP_LOAD_SHARE
#define MAX_IP_MSPLIT	3
#else
#define MAX_IP_MSPLIT	1
#endif

#define IP_HLEN 20
#define UDP_HLEN 8

#define CIRC_HASH_BITS      3
#define CIRC_HASHES         (1 << CIRC_HASH_BITS)

/* define if all IP TOS supported */
/* #define IP_ALL_METRICS */



/* ip routing tables */

#ifndef IP_DEF_ROUTE_BSZ
#define IP_DEF_ROUTE_BSZ 	64 
#endif

#ifndef IP_NONDEF_ROUTE_BSZ
#define IP_NONDEF_ROUTE_BSZ	64
#endif

#ifndef MAX_IP_DEF_RT_BLK
#define MAX_IP_DEF_RT_BLK 	2
#endif

#ifndef MAX_IP_NONDEF_BLK
#define MAX_IP_NONDEF_BLK 	2
#endif

#ifndef IP_ROUTE_HASHES
#define IP_ROUTE_HASHES 	32
#endif

#ifndef IP_MAX_LOCAL_MCAST
#define IP_MAX_LOCAL_MCAST	10
#endif


/* dont make too big since need to look in each bin per tic */
#define ARP_HASH_BITS      3
#define ARP_HASHES         (1 << ARP_HASH_BITS)

/* when true, ping and traceroute use raw sockets,
   else ping uses IcmpEchoRsp and traceroute
   uses udpRxErr
*/
#define IP_PING_RAW 0

/* Define if routing table change needs external
   outcall
*/
/* #define IP_RT_SIGNAL				*/
	
/* define if patricia tree is used for route storage */
/* Note: NOT CURRENTLY SUPPORTED */
/* #define IP_USE_PTREE               */

/* if IP_USE_PTREE is undefined
   and USE_BTREE is defined for routes in a given hash bin, all routes with
   matching mask are stored in a balanced binary tree. 
*/
#define USE_BTREE		

/* max number of logical circuits */
#define MAX_CIRCUIT     		8

/* maximum logical interfaces: 1 lan port = 1 logical
   interface. 1 WAN port can = > 1 logical interface if
   connect to more than one destination.
*/
#define RR_MAX_INTF		8
         

/* highest IP IFID that will be used. Used to create
   an array for quick IFID to logical circuit
   mapping.
*/
#define MAX_IFID	    		RR_MAX_INTF

/* DEFINE if networks spans more than one 
   phyisical interface
*/
/* #define IP_VLAN			*/

/* DO NOT CHANGE: multi-homing must now use
   different logical circuits even without OSPF */
/* max number of ip addresses per interface (1-63)
   must be 1 for ospf (multi-homing done using
   multiple circuits) */
#define MAX_IF_IPADD			1

#define ARP_DEF_TTL				60*6		/* minutes (6 hours) */
#define ARP_TABLE_SIZE 			256
#define ARP_REQ_LIST_SIZE		16
#define ARP_REQ_TTL				10			/* seconds */


/* macro mapping rip ciruit ID to interface ID for snmp */
#define RIP_IFID(x)				x
 
/* MEMORY ALLOCATION MACROS */

extern	ibd_pt	oframe_alloc(int len);
extern	void oframe_free (ibd_pt pdu_bd);
/* alloc output frame */
#define ipOfAlloc(len)			oframe_alloc(len)
#define ipOfFree(ptr)			oframe_free(ptr)

	
/* blocks of routes */
#define ipRouteAlloc(len)		RR_MALLOC(len)

#define ipRipNodeAlloc()		RR_MALLOC(sizeof(RNODE))
#define ipNodeAlloc()			RR_MALLOC(sizeof(INODE))

/* circuits */
#define ipCircuitAlloc(len)		RR_MALLOC(len)
#define ipCircuitFree(ptr)		OS_FREE(ptr)

#define ripCircuitAlloc(len)	RR_MALLOC(len)
#define ripCircuitFree(ptr)		OS_FREE(ptr)

/* neighbors */
#define RipNeighAlloc()			RR_MALLOC(sizeof(RNEIGH))
#define RipNeighFree(ptr)		OS_FREE(ptr)

#define ipArpAlloc(len)			RR_MALLOC(len)
#define ipArpFree(ptr)			OS_FREE(ptr)

#define ipReasmAlloc(len)		RR_MALLOC(len)
#define ipReasmFree(ptr)		OS_FREE(ptr)

/* igmp group entries */
#define igmpAlloc(len)			RR_MALLOC(len)
#define igmpFree(ptr)			OS_FREE(ptr)

#define ipStaticRtAlloc(len)	RR_MALLOC(len)
#define ipStaticRtFree(ptr)		OS_FREE(ptr)

/* ip security association entries */
#define ipSAAlloc(len)			RR_MALLOC(len)
#define ipSAFree(ptr)			OS_FREE(ptr)

/* path mtu discovery blocks */
#define ipPMTUAlloc(len)		RR_MALLOC(len)
#define ipPMTUFree(ptr)			OS_FREE(ptr)

#define ipSrouteAlloc(len)		RR_MALLOC(len)
#define ipSrouteFree(ptr)		OS_FREE(ptr)

/* NOTE: this mem copy assumes a 0 len copy is valid !!! */
#define ipCopyMem(dst,src,len)  	rrCopyMem((char *)(dst),(char *)(src),len)

#define ipFillMem(dst,data,len)   	rrFillMem((char *)dst,data,len) /*fill */

#define ipDiffMem(dst,src,len)    	rrDiffMem((char *)dst,(char *)src,len) 
#define ipLink rrLink
#define ipGenLink rrGenLink
#define ipULink rrULink

/* byte swapping moved to common file rrport.h */
#define WTOPDU(add,val)  	u16_2n(add,val)
#define DWTOPDU(add,val)  	u32_2n(add,val)

#define WFROMPDU(add)		n2u16(add)
#define DWFROMPDU(add)		n2u32(add)

#define XIPA(xpdua) 		(rripa)uns_p2l(xpdua)
#define WIPA(xpdua,xval)  	uns_l2p(xpdua,xval)


#ifndef MAX
#define MAX(a,b)  ((a >= b)? a : b)
#define MIN(a,b)  ((a < b)? a : b)
#endif


/* counters and config objects used at the 
   forwarding level that may or may not
   be accessible directly.
*/
#define RN_IPFORWARDING     	i_node->rn_ipForwarding
#define RN_IPINRECEIVES     	i_node->rn_ipInReceives
#define RN_IPFORWDATAGRAMS  	i_node->rn_ipForwDatagrams
#define ARP_PROXY(xcid)	   	(ipCircFromId(xcid))->rc_arpproxy
#define ARP_DORSP(xcid)	   	(ipCircFromId(xcid))->rc_arprsp
#define CIRC_IPA(xcid)	   	(ipCircFromId(xcid))->rc_ipa->ip_add
#define GETLOCADDR(xcid,xipa) 	ipGetLocAddr(ipCircFromId(xcid),xipa)