[lwip-devel] [task #14979] imrpove code size with unused socket options

[Simon Goldschmidt]

URL:
  <http://savannah.nongnu.org/task/?14979>

                 Summary: imrpove code size with unused socket options
                 Project: lwIP - A Lightweight TCP/IP stack
            Submitted by: goldsimon
            Submitted on: Mon 02 Jul 2018 11:05:59 AM UTC
                Category: None
         Should Start On: Mon 02 Jul 2018 12:00:00 AM UTC
   Should be Finished on: Mon 02 Jul 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

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Details:

This is just an idea: setsockopt/getsockopt makes the binary grow quite big
because these functions contain all code as switch/case, so the linker can not
drop out unused code.

Maybe we can convert setsockopt/getsockopt from a function to a define like
this:
#define setsockopt(s,level,optname,optval,optlen)
setsockopt_##level##_##optname(s, optval, optlen)

That way, an undefined optval/level combination would generate a linker error
and all unused options could be removed by the linker.




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