/* comKernelSupport.c - COM library (VxDCOM) kernel level support functions *//* Copyright (c) 2000 Wind River Systems, Inc. *//*modification history--------------------01h,03jul01,nel  set correct name of comSysSetComLocal.01g,27jun01,dbs  fix for T2 build01f,22jun01,nel  Add extra headers for WIND_TCB def.01e,22jun01,dbs  move some includes into here01d,21jun01,nel  Rename interface to conform to new naming standard in COM.01c,10apr00,nel  Fix for Solaris and Linux Build.01b,05arp00,nel  MAC address detection.01a,22mar00,nel  created*//*DESCRIPTIONThis library provides low level kernel support for VxDCOM which must run inan application domain and therefore can't access kernel functions directly..NOMANUAL*/#include <sys/ioctl.h>#include <netinet/if_ether.h>#include <stdlib.h>#include <taskLib.h>/**************************************************************************** comSysAddressGet - returns the MAC address for the board.** This function returns the MAC address for the board.** RETURNS: 0 if MAC address retrieved, -1 otherwise.* .NOMANUAL*/int comSysAddressGet    (    unsigned char * 	addr		/* will hold MAC address on exit */    )    {    FAST struct ifnet       *ifp;    for (ifp = ifnet;  ifp!= NULL;  ifp = ifp->if_next)	{    /* if the interface is not LOOPBACK or SLIP, return the link     * level address.     */    if (!(ifp->if_flags & IFF_POINTOPOINT) &&	!(ifp->if_flags & IFF_LOOPBACK))	    {	    memcpy(addr, ((struct arpcom *)ifp)->ac_enaddr, 6);	    return 0;	    }	}	    return -1;    }unsigned long comSysLocalGet ()    {    WIND_TCB*	pTcb = taskTcb (taskIdSelf ());#if VXDCOM_PLATFORM_VXWORKS == 5    /* VxWorks 5.x */    return (unsigned long) pTcb->pComLocal;#else    /* VxWorks AE 1.x */    return (unsigned long) pTcb->pLcb->pComLocal;#endif    }void comSysLocalSet    (    unsigned long	nextTaskId	/* */    )    {    WIND_TCB*	pTcb = taskTcb (taskIdSelf ());#if VXDCOM_PLATFORM_VXWORKS == 5    /* VxWorks 5.x */    pTcb->pComLocal = (void*) nextTaskId;#else    /* VxWorks AE 1.x */    pTcb->pLcb->pComLocal = (void*) nextTaskId;#endif    }