[lwip-devel] [patch #10429] ip4: don't zero checksum on forwarding

[Andrew Tridgell]

URL:
  <https://savannah.nongnu.org/patch/?10429>

                 Summary: ip4: don't zero checksum on forwarding
                   Group: lwIP - A Lightweight TCP/IP stack
               Submitter: tridge
               Submitted: Wed 10 Jan 2024 04:50:41 AM UTC
                Category: None
                Priority: 5 - Normal
                  Status: None
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any
         Planned Release: None


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Follow-up Comments:


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Date: Wed 10 Jan 2024 04:50:41 AM UTC By: Andrew Tridgell <tridge>
this fixes IP forwarding for systems that don't have hardware checksumming on
the output interface. The CHECKSUM_GEN_xxx checks meant that lwip was
unconditionally zeroing the checksums when forwarding was enabled, the the
checksums were not being re-calculated before sending, resulting in zero
checksum on the forwarded output packets







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File Attachments:


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Name: 0002-ip4-don-t-zero-checksum-on-forwarding.patch  Size: 2KiB
<http://savannah.nongnu.org/patch/download.php?file_id=55548>

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