Path: utzoo!utgpu!attcan!uunet!convex!killer!tness7!ninja!sys1!reden
From: reden@sys1.TANDY.COM
Newsgroups: comp.os.vms
Subject: IOSB.SIZE on DELQA QIO's
Message-ID: <-2143956@sys1>
Date: 28 Jul 88 15:21:00 GMT
Lines: 24
Nf-ID: #N:sys1:-2143956:000:882
Nf-From: sys1.TANDY.COM!reden    Jul 28 10:21:00 1988



I'm currently writing a program to monitor ethernet packets by putting 
the DELQA in promiscuous mode.

   Everything works fine for the most part, but almost all packets except
DECNET (%x6003) (including LAT,XNS) return an invalid IOSB.SIZE after the
QIO completes.  This really has me baffeled becuase the system 
is putting data in my buffer, just isn't noting the count in the IOSB. 

   I am also getting some LAT packets with a length of 0.  This causes a
controller error to be returned in the IOSB.STATUS field.  The since the 
ethernet doesn't allow packets with 0 data size, something must be screwed
up here too. 

    DECNET and INTEL packets come through OK with proper SIZE and STATUS
 fields so I don't think it's a data formatting problem. 


  If anyone knows what I'm missing or can confirm the VMS bug, please let me
know....


robert Eden							reden@sys1.uucp