ip_var.h

VRTX 商用嵌入式实时操作系统

/***************************************************************************
*
*               Copyright (c) 1993 READY SYSTEMS CORPORATION.
*
*       All rights reserved. READY SYSTEMS' source code is an unpublished
*       work and the use of a copyright notice does not imply otherwise.
*       This source code contains confidential, trade secret material of
*       READY SYSTEMS. Any attempt or participation in deciphering, decoding,
*       reverse engineering or in any way altering the source code is
*       strictly prohibited, unless the prior written consent of
*       READY SYSTEMS is obtained.
*
*
*       Module Name:            ip_var.h
*
*       Identification:         @(#) 1.3 ip_var.h
*
*       Date:                   1/6/94  16:36:51
*
****************************************************************************
*/

/*
 RCS header identifier - ip_var.h,v 1.2 1995/01/05 16:32:27 sriram Exp
*/
/*
 * Copyrighted as an unpublished work.
 * (c) Copyright 1987-1993 Lachman Technology, Incorporated
 * All rights reserved.
 * 
 * RESTRICTED RIGHTS
 * 
 * These programs are supplied under a license.  They may be used,
 * disclosed, and/or copied only as permitted under such license
 * agreement.  Any copy must contain the above copyright notice and
 * this restricted rights notice.  Use, copying, and/or disclosure
 * of the programs is strictly prohibited unless otherwise provided
 * in the license agreement.
 */
/*
 * Copyright (c) 1985 Regents of the University of California.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms are permitted
 * provided that the above copyright notice and this paragraph are
 * duplicated in all such forms and that any documentation,
 * advertising materials, and other materials related to such
 * distribution and use acknowledge that the software was developed
 * by the University of California, Berkeley.  The name of the
 * University may not be used to endorse or promote products derived
 * from this software without specific prior written permission.
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
 * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 */

/* **********************************************************************
 * 
 * CHANGE HISTORY:
 *
 * ----------------------------------------------------------------------
 * DATE           CHANGES
 * ----------------------------------------------------------------------
 *
 * 12/14/94       Included the Version 5 TCP compatible code for SNMP_V2.
 *                Check for #ifdef VER5_COMPAT.
 * 
 * ********************************************************************* */

#ifdef SNX
#ifndef VER5_COMPAT
#define VER5_COMPAT  /* This needs to be compiled, SNX */
#endif
#endif

#ifndef ip_var_h
#define ip_var_h

#ifndef route_h
#include "net/route.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/* ip_var.h	6.1	83/07/29	 */

/*
 * Overlay for ip header used by other protocols (tcp, udp). 
 */
struct ipovly {
	caddr_t         ih_next;/* for protocol sequence q's */
	mblk_t	       *ih_mblk;
	u_char          ih_x1;	/* (unused) */
	u_char          ih_pr;	/* protocol */
	short           ih_len;	/* protocol length */
	struct in_addr  ih_src;	/* source internet address */
	struct in_addr  ih_dst;	/* destination internet address */
};

/*
 * Ip reassembly queue structure.  Each fragment being reassembled is
 * attached to one of these structures. They are timed out after ipq_ttl
 * drops to 0, and may also be reclaimed if memory becomes tight.
 */
struct ipq {
	struct ipq     *next, *prev;	/* to other reass headers */
	u_char          ipq_ttl;	/* time for reass q to live */
	u_char          ipq_p;		/* protocol of this fragment */
	u_short         ipq_id;		/* sequence id for reassembly */
	struct ipasfrag *ipq_next;
	/* to ip headers of fragments */
	struct in_addr  ipq_src, ipq_dst;
};

/*
 * Ip header, when holding a fragment. 
 *
 * Note: ipf_next must be at same offset as ipq_next above.
 */
struct ipasfrag {
#if defined(vax) || defined(i386) || defined(I960)
	u_char          ip_hl:4, ip_v:4;
#else
	u_char          ip_v:4, ip_hl:4;
#endif
	u_char          ipf_mff;	/* copied from (ip_off&IP_MF) */
	short           ip_len;
	u_short         ip_id;
	short           ip_off;
	u_char          ip_ttl;
	u_char          ip_p;
	u_short         ip_sum;
	struct ipasfrag *ipf_next;	/* next fragment */
	mblk_t         *ipf_mblk;	/* The mblk header for this data */
};

/* get a pointer to an IP header from a pointer to a fragment */

#define IPHDR(ip) ((struct ip *) (ip))
#define IPASFRAG(ip) ((struct ipasfrag *) (ip))

/*
 * Structure stored in mbuf in inpcb.ip_options and passed to ip_output when
 * ip options are in use. The actual length of the options (including
 * ipopt_dst) is in m_len. 
 */
#define MAX_IPOPTLEN	40

struct ipoption {
	struct in_addr  ipopt_dst;	/* first-hop dst if source routed */
	char            ipopt_list[MAX_IPOPTLEN];	/* options proper */
};

struct	ipstat {
	long	ips_total;		/* total packets received */
	long	ips_badsum;		/* checksum bad */
	long	ips_tooshort;		/* packet too short */
	long	ips_toosmall;		/* not enough data */
	long	ips_badhlen;		/* ip header length < data size */
	long	ips_badlen;		/* ip length < ip header length */
	long	ips_fragments;		/* fragments received */
	long	ips_fragdropped;	/* frags dropped (dups, out of space) */
	long	ips_fragtimeout;	/* fragments timed out */
	long	ips_forward;		/* packets forwarded */
	long	ips_cantforward;	/* packets rcvd for unreachable dest */
	long	ips_redirectsent;	/* packets forwarded on same net */
	long	ips_unknownproto;	/* unknown protocol */
	long	ips_inerrors;		/* input errors */
	long	ips_indelivers;		/* packets delivered */
	long	ips_outrequests;	/* ip packets sent */
	long	ips_outerrors;		/* output errors */
	long	ips_noroutes;		/* no route found */
	long	ips_reasms;		/* packets reassembled */
	long	ips_pfrags;		/* packets fragmented */
	long	ips_fragfails;		/* packets which could not be fragmented */
	long	ips_frags;		/* fragments created */

#ifdef VER5_COMPAT
    u_long  ips_badver;     /* ip version # != Current Ver # */
    u_long  ips_badbcast;       /* LL bcast but IP unicast addr */
    u_long  ips_badsrcaddr;     /* bad originating address */
#endif
};

#ifdef KERNEL
/* flags passed to ip_output as last parameter */
#define	IP_FORWARDING		0x1	/* most of ip header exists */
#define	IP_ROUTETOIF		SO_DONTROUTE	/* bypass routing tables */
#define	IP_ALLOWBROADCAST	SO_BROADCAST	/* can send broadcast packets */

extern struct ipstat ip_stat;
extern u_short  ip_id;		/* ip packet ctr, for ids */

mblk_t         *ip_srcroute();
#endif


#ifdef VER5_COMPAT

/* mgmt. ioctls and related structures */

/* 
	All these should have been in socket.h. But as i was changing these 
   	files, i thought it might be good to add them here.
*/

#ifndef __MGMT
#define __MGMT  'M'
#endif

#ifndef SIOCSMGMT
#define SIOCSMGMT   ((__MGMT << 8) | 10)
#endif

#define SIOCGIFALL  ((__MGMT << 8) | 2)
#define SIOCGICMPSTATS  ((__MGMT << 8) | 3)
#define SIOCGIPSTUFF    ((__MGMT << 8) | 4)
#define SIOCSIPMISC ((__MGMT << 8) | 5)

#define SIOCSIPTRAP ((__MGMT << 8) | 13)
#define SIOCGINMEMSTATS ((__MGMT << 8) | 14)
#define SIOCGINLOCKSTATS ((__MGMT << 8) | 15)

#define SIOCGIFNUM       ((__MGMT << 8) | 20)

#define MACIOC_GETADDR   ((__MGMT << 8) | 31)
#define MACIOC_GETSTAT   ((__MGMT << 8) | 32)

struct ip_stuff {
    struct  ipstat ip_stat;     /* IP statistics */
    struct  rtstat rt_stat;     /* routing statistics */
    int ip_forwarding;      	/* are we forwarding? */
    int ip_default_ttl;     	/* ip TTL */
    int ipq_ttl;   		    	/* fragment TTL */
    int ipq_reasm_reqds;    	/* datagrams waiting for reassembly */
    int icmp_answermask;    	/* authoritative for mask replies */
    int ip_sendredirects;   	/* sending redirects */
};

struct ip_misc {
    int arg;    /* set either to 1 or 2 */
    int ip_forwarding;
    int ip_default_ttl;

};

struct link_msg 
{
    int idx;
    int up;
} ;

#endif  /* __netinet_ip_var_h */

#ifdef __cplusplus
}
#endif

#endif				/* ip_var_h */