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    RE: How to handle CRC errors?



    I meant the PDU has CRC error........not the TCP packet as such.
    
    Preetam
    
    -----Original Message-----
    From: bill [mailto:bill@strahm.net]
    Sent: Thursday, January 23, 2003 7:06 PM
    To: Preetam Verma
    Subject: RE: How to handle CRC errors?
    
    
    Silly question... If the TCP CRC is incorrect, wouldn't the TOE discard
    it, NAK the package and get a retransmit ?
    
    Bill
    
    -----Original Message-----
    From: owner-ips@ece.cmu.edu [mailto:owner-ips@ece.cmu.edu] On Behalf Of
    Preetam Verma
    Sent: Thursday, January 23, 2003 3:32 PM
    To: ips@ece.cmu.edu
    Subject: How to handle CRC errors?
    
    
    I have a situation like this:
    
                                                CPU
                                                   |
                                                   |
    <---------------->port<---------->TCP offload engine
    <------------->Logic<----------------->Application processing
    
    The logic is going to assemble PDUs and pass them on to the application.
    If a PDU that came in has CRC errors, will the application need to
    signal the initiator to terminate the session? Say a PDU header from the
    TCP offload engine was corrupted, how would the "logic" need to handle
    the data that comes later. How do I ensure that the application receives
    packets in order? How can I ensure that in such an event the PDU
    processing logic does not go out of sync?
    
    Regards
    
    Preetam
    
    
    
    
    
    


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