fjpanag opened a new pull request, #7525:
URL: https://github.com/apache/incubator-nuttx/pull/7525

   ## Summary
   
   This is an attempt to fix the issues reported in #6960:
   * Only a single connection is allocated, the one actually needed.
   * In `tcp_free()` the connection is actually deallocated, instead of leaving 
it existing forever in the list.
   
   This is only the first step, possibly with more to come (list of 
pre-allocated connections, maximum connections limit etc).
   
   For the moment, this PR handles only TCP, till we determine all the details. 
 
   Then the fix will be copied to all other connections that use similar logic.
   
   ## Impact
   
   Improved memory utilization in TCP.
   
   ## Testing
   
   Only minimal testing for the moment.  
   More testing is expected on actual hardware soon, I will report back.
   


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