Bug In Receive Handling For Legacy Adapters

 

Knowledge Base ID

 KB01210001
Category CLOSED BUG

Effected Product

 PCASIM - NDIS Intermediate (IM) Driver Samples For Windows NT 4.0

Effected Versions

 V1.00.01.06 and prior
Effected Platforms Windows NT 4.0

 

Symptoms

Received packets are corrupted by the PCASIM driver as they are passed to higher level protocols when PCASIM is operating on some legacy NDIS adapter drivers such as the 3Com 3C509.

 

Cause

Certain legacy NDIS adapters or their drivers only indicate partial packets when calling a protocol's ReceiveHandler. In this case the protocol driver must call NdisTransferData to fetch the additional data.

The current PCASIM implementation does not call NdisTransferData correctly in this situation, with the result that packets passed upwards to the higher-level protocols are incomplete or corrupted.

 

Resolution

The fix to this bug is under development.

Please let us know if you have observed this problem, We would like to collect a comprehensive list of legacy drivers that have this behavior.

 

Status

March 10, 2000 Fixed in V1.00.01.07.
November 3, 1999 The fix to this bug is currently under development.
January 21, 2000 An interim fix is available. The fix includes instructions and revised modules for the PCASIM IPDelay version only. You will have to extrapolate the IPDelay fixes to incorporate them into other PCASIM driver variations. Please read the FIX.TXT file. You will need your PCASIM password to extract the files.

icodownl.gif (151 bytes) Download PCASIM Interim Fix

 

Comments

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Keywords PCASIM, BUG
Created January 21, 2000
Last Reviewed March 10, 2000

 
 

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