Re: [lwip-users] Fast retransmit

[K.J. Mansley]

On Tue, 2004-07-13 at 11:19, K.J. Mansley wrote:
> On Tue, 2004-07-13 at 11:11, Sam Jansen wrote:
> > > And please, a mention of the lwIP version used in this test?
> > 
> > Oh, sorry. I'm using Stable 0.7.2.
> > 
> > You can find a tcpdump/pcap file at:
> > 
> > http://www.wand.net.nz/~stj2/900/random/lwip.pcap.gz
> 
> Thanks.
> 
> Does look a little odd.  Just to clarify, which node was this trace
> taken on?  

The answer would seem to be that when tcp_rexmit is called from the fast
retransmit code, it moves *all* unacked segments to the unsent queue,
which will mean *all* unacked segments are retransmitted.  This is not
what should happen.  Does anyone know why this change was made?  There
could be a good reason for it that I've not thought of.

Thanks

Kieran