Commits on Jul 31, 2024

1. net: tcp: Keep track of recv window size change since last ACK …

   Windows TCP stack has a peculiar behavior - when running iperf, it will
   fill out the RX window almost entirely, but will not set PSH flag on
   packets. In result, our stack would delay the ACK and thus window
   update, affecting throughputs heavily.
   
   In order to avoid that, keep track of the most recent window size
   reported to the peer, and reduce it when receiving new data. In case the
   RX window, as seen from the peer perspective, drops below certain
   threshold, and the real RX window is currently empty, send an ACK
   immediately when updating window, so that peer can continue
   with sending data.
   
   Signed-off-by: Robert Lubos <robert.lubos@nordicsemi.no>
   (cherry picked from commit 349bf81)

   

   rlubos authored and github-actions[bot] committed Jul 31, 2024
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