[lwip-devel] [bug #43840] Checksum error for TCP_CHECKSUM_ON_COPY==1 for no-copy data

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/bugs/?43840>

                 Summary: Checksum error for TCP_CHECKSUM_ON_COPY==1 for
no-copy data
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Mi 17 Dez 2014 08:20:57 GMT
                Category: IPv4
                Severity: 3 - Normal
              Item Group: Faulty Behaviour
                  Status: In Progress
                 Privacy: Public
             Assigned to: goldsimon
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: 
            lwIP version: git head

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Details:

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.




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