buglwIP - A Lightweight TCP/IP stack - Bugs: bug #43840, Checksum error for...

 
 

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bug #43840: Checksum error for TCP_CHECKSUM_ON_COPY==1 for no-copy data with odd length

Submitter:  Simon Goldschmidt <goldsimon>
Submitted:  Wed 17 Dec 2014 08:20:57 AM UTC
   
 
Category:  IPv4 Severity:  3 - Normal
Item Group:  Faulty Behaviour Status:  Fixed
Privacy:  Public Assigned to:  goldsimon
Open/Closed:  Closed Planned Release:  None
lwIP version:  git head

Wed 17 Dec 2014 08:20:57 AM UTC, original submission:  

With TCP_CHECKSUM_ON_COPY==1, tcp_write() creates an invalid (swapped) checksum for the first data chunk in a segment if this data chunk is not copied (PBUF_REF is created) and has an odd length.

Simon Goldschmidt <goldsimon>
Group administrator

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

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Depends on the following items: None found

Items that depend on this one: None found

 

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    Follow 3 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2014-12-17 goldsimon StatusIn Progress Fixed
        Open/ClosedOpen Closed
        SummaryChecksum error for TCP_CHECKSUM_ON_COPY==1 for no-copy data Checksum error for TCP_CHECKSUM_ON_COPY==1 for no-copy data with odd length

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