TCP fragmentation issue

Chris Johns cjohns at
Mon Jun 14 23:47:39 UTC 2004

Ian Caddy wrote:
> I thought I would look into 4.6.1 to see if it was still handled the 
> same way and it appears to be, although I can't find the param.h file, 
> in fact I can't find a definition anywhere in the tree for MSIZE! (I 
> even greped the whole tree *.*)

It is in newlib:


> I have two choices.  The first is to modify sosend to link in the second 
> mbuf to send the whole frame, or the other option is manually modify the 
> minimum cluster size to it matches up with the mbuf size with no gap.  I 
>  will let you all know how I go.

What happens if a router fragments the packets due to varying MTU sizes 
in the path ?

  Chris Johns

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