Re: [lwip-devel] [task #14807] tcp input: try to not write to the rx pbuf

[Bernhart Pelger]

While the byte-flips could be made on-the-fly, the ooseq code also 
writes to
the flags field in the tcp header using TCPH_SET_FLAG macro.

For this, there's no simple solution. Maybe storing the tcp flags in the 
tcp_seg structures,
and then redirect every read access to there...


Am 10.01.2018 um 15:25 schrieb Simon Goldschmidt:
> URL:
>    <http://savannah.nongnu.org/task/?14807>
>
>                   Summary: tcp input: try to not write to the rx pbuf
>                   Project: lwIP - A Lightweight TCP/IP stack
>              Submitted by: goldsimon
>              Submitted on: Wed 10 Jan 2018 02:25:20 PM UTC
>                  Category: None
>           Should Start On: Wed 10 Jan 2018 12:00:00 AM UTC
>     Should be Finished on: Wed 10 Jan 2018 12:00:00 AM UTC
>                  Priority: 3 - Low
>                    Status: None
>                   Privacy: Public
>          Percent Complete: 0%
>               Assigned to: None
>               Open/Closed: Open
>           Discussion Lock: Any
>           Planned Release: None
>                    Effort: 0.00
>
>      _______________________________________________________
>
> Details:
>
> tcp writes into rx pbufs (at least network byte order flips). Let's try to
> change this. I don't know if it works at all (regarding ooseq, especially) ->
> low prio
>
>
>
>
>      _______________________________________________________
>
> Reply to this item at:
>
>    <http://savannah.nongnu.org/task/?14807>
>
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