INFO: DLC Information on LLC_DIR_SET_MULTICAST_ADDRESS Command (129022)

MORE INFORMATION

Sample Code

   BOOL DlcSetMulticastAddress( BYTE bAdapter,
                                BYTE *pbResult, BYTE *pbAddress )

   {
       LLC_CCB Ccb;

       Ccb.uchAdapterNumber  = bAdapter;
       Ccb.uchDlcCommand     = LLC_DIR_SET_MULTICAST_ADDRESS;

       // note:  Dlc expects Ethernet addresses to be specified in the
       //        non-canonical form.  In other words, reverse the bits
       //        before passing an Ethernet address.
       // 
       //        Also, the first byte of the canonical form of an
       //        Ethernet multicast address must be 0x01.

       Ccb.u.pParameterTable = (PLLC_PARMS) pbAddress;

       if(!DlcSyncCall( &Ccb ))
           return FALSE;
       else
       {
           *pbResult = Ccb.uchDlcStatus;
           return TRUE;
       }
   }


   // AcsLan wrapper function used by DlcSetMulticastAddress

   BOOL DlcSyncCall( PLLC_CCB pCcb )
   {
      BOOL  fResult = FALSE;
      DWORD dwResult;

      pCcb->hCompletionEvent = CreateEvent(NULL, TRUE, FALSE, NULL);

      if (!pCcb->hCompletionEvent)
         return FALSE;

      int iStatus = (int) AcsLan( pCcb, NULL );
      if ( iStatus != ACSLAN_STATUS_COMMAND_ACCEPTED )
         goto done;

      dwResult = WaitForSingleObject( pCcb->hCompletionEvent, INFINITE );

      if ( dwResult == WAIT_OBJECT_0 )
         fResult = TRUE;

   done:
      CloseHandle( pCcb->hCompletionEvent );

      return fResult;
   }