[ECOS] FreeBSD TCP/IP stack and sysctl

["Doyle, Patrick" <WPD at dtccom dot com>]

Can anybody point me at an example of using the 'sysctl()' API of the
FreeBSD stack to adjust TCP parameters?  Specifically, I would like to
shorten the retransmit timeout and lengthen the ACK timeout.  (This is on a
dedicated PPP link between two devices).  I poked around a little bit and
see that I can change the retransmit timeout -- I haven't looked for how to
change the ACK timeout (if it is even possible).  I just don't know where to
start with the 'sysctl()' function, having never used it before.  If worse
comes to worse, I'll just change the variable manually outside of the
sysctl() mechanism, but I figured I would start by at least pretending to
follow the rules :-)

All pointers will be gratefully accepted...

--wpd


Patrick Doyle
DSP Design Engineer
(603) 546-2179

 

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