iplib.c

VXWORKS源代码

/* ipLib.c - ip protocol interface library */

/* Copyright 1984 - 2001 Wind River Systems, Inc. */
#include "copyright_wrs.h"

/*
modification history
--------------------
01n,15oct01,rae  merge from truestack ver 01n, base 01m (VIRTUAL_STACK)
01m,13nov97,vin  consolidated all flags into _ipCfgFlags.
01b,15jul97,spm  made IP checksum calculation configurable (SPR #7836)
01a,20jan97,vin  written
*/

/*
DESCRIPTION
This library contains the interface to the ip protocol. The IP protocol
is configured in this library. 

The routine ipLibInit() is responsible for configuring the ip protocol
with various parameters.

INCLUDE FILES: netLib.h

.pG "Network"

NOMANUAL
*/

/* includes */
#include "vxWorks.h"
#include "netLib.h"
#include "net/protosw.h"
#include "net/domain.h"
#include "net/mbuf.h"
#include "netinet/in.h"
#include "netinet/in_systm.h"
#include "netinet/ip.h"
#include "netinet/ip_var.h"

#ifdef VIRTUAL_STACK
#include "netinet/vsLib.h"
#endif /* VIRTUAL_STACK */

/* externs */

#ifndef VIRTUAL_STACK
IMPORT int		_ipCfgFlags;
IMPORT int		_protoSwIndex;
IMPORT struct protosw 	inetsw [IP_PROTO_NUM_MAX]; 
IMPORT int		ip_defttl;
IMPORT int 		ipqmaxlen;
IMPORT int		ipfragttl;
#endif /* VIRTUAL_STACK */

/* globals */

/* defines */

/* typedefs */


/* locals */


/* forward declarations */
STATUS ipLibInit (IP_CFG_PARAMS * ipCfg); 
STATUS rawIpLibInit (void);
STATUS rawLibInit (void);

STATUS ipLibInit 
    (
    IP_CFG_PARAMS * 	ipCfg			/* ip config parameters */
    )
    {
    FAST struct protosw	* pProtoSwitch; 

    if (_protoSwIndex >= sizeof(inetsw)/sizeof(inetsw[0]))
	return (ERROR) ;

    pProtoSwitch = &inetsw [_protoSwIndex]; 

    if (pProtoSwitch->pr_domain != NULL)
	return (OK); 				/* already initialized */

    pProtoSwitch->pr_type   	=  0;
    pProtoSwitch->pr_domain   	=  &inetdomain;
    pProtoSwitch->pr_protocol   =  0;
    pProtoSwitch->pr_flags	=  0;
    pProtoSwitch->pr_input	=  0;
    pProtoSwitch->pr_output	=  ip_output;
    pProtoSwitch->pr_ctlinput	=  0;
    pProtoSwitch->pr_ctloutput	=  0;
    pProtoSwitch->pr_usrreq	=  0;
    pProtoSwitch->pr_init	=  ip_init;
    pProtoSwitch->pr_fasttimo	=  0;
    pProtoSwitch->pr_slowtimo	=  ip_slowtimo;
    pProtoSwitch->pr_drain	=  ip_drain;
    pProtoSwitch->pr_sysctl	=  0;

    _protoSwIndex++; 

    /* initialize ip configuration parameters */

    _ipCfgFlags = ipCfg->ipCfgFlags;		/* ip configuration flags */
    ip_defttl 	= ipCfg->ipDefTtl; 		/* ip default time to live */
    ipqmaxlen 	= ipCfg->ipIntrQueueLen;	/* ip queue maximum length */
    ipfragttl	= ipCfg->ipFragTtl; 		/* ip fragment time to live */

    return (OK); 
    }

STATUS rawIpLibInit (void)
    {
    FAST struct protosw	* pProtoSwitch; 

    if (_protoSwIndex >= sizeof(inetsw)/sizeof(inetsw[0]))
	return (ERROR) ;

    pProtoSwitch = &inetsw [_protoSwIndex]; 

    if (pProtoSwitch->pr_domain != NULL)
	return (OK); 				/* already initialized */

    pProtoSwitch->pr_type   	=  SOCK_RAW;
    pProtoSwitch->pr_domain   	=  &inetdomain;
    pProtoSwitch->pr_protocol   =  IPPROTO_RAW;
    pProtoSwitch->pr_flags	=  PR_ATOMIC | PR_ADDR;
    pProtoSwitch->pr_input	=  rip_input;
    pProtoSwitch->pr_output	=  rip_output;
    pProtoSwitch->pr_ctlinput	=  0;
    pProtoSwitch->pr_ctloutput	=  rip_ctloutput;
    pProtoSwitch->pr_usrreq	=  rip_usrreq;
    pProtoSwitch->pr_init	=  0;
    pProtoSwitch->pr_fasttimo	=  0;
    pProtoSwitch->pr_slowtimo	=  0;
    pProtoSwitch->pr_drain	=  0;
    pProtoSwitch->pr_sysctl	=  0;

    _protoSwIndex++; 
    return (OK); 
    }

STATUS rawLibInit (void)
    {
    FAST struct protosw	* pProtoSwitch; 

    if (_protoSwIndex >= sizeof(inetsw)/sizeof(inetsw[0]))
	return (ERROR) ;

    pProtoSwitch = &inetsw [_protoSwIndex]; 

    if (pProtoSwitch->pr_domain != NULL)
	return (OK); 				/* already initialized */

    pProtoSwitch->pr_type   	=  SOCK_RAW;
    pProtoSwitch->pr_domain   	=  &inetdomain;
    pProtoSwitch->pr_protocol   =  0;
    pProtoSwitch->pr_flags	=  PR_ATOMIC | PR_ADDR;
    pProtoSwitch->pr_input	=  rip_input;
    pProtoSwitch->pr_output	=  rip_output;
    pProtoSwitch->pr_ctlinput	=  0; 
    pProtoSwitch->pr_ctloutput	=  rip_ctloutput;
    pProtoSwitch->pr_usrreq	=  rip_usrreq;
    pProtoSwitch->pr_init	=  rip_init;
    pProtoSwitch->pr_fasttimo	=  0;
    pProtoSwitch->pr_slowtimo	=  0;
    pProtoSwitch->pr_drain	=  0;
    pProtoSwitch->pr_sysctl	=  0;

    _protoSwIndex++; 
    return (OK); 
    }