liqinhuixm opened a new pull request, #12493:
URL: https://github.com/apache/nuttx/pull/12493

   ## Summary
   Implement GSO/GRO functions on the sim,  which mainly support the TCP and 
UDP.
   
   ## Impact
   The sent packets will not be fragmented by IP Layer, but will be segmented 
through GSO function.
   
   ## Testing
   - Enable the following configuration options:
   ```
   CONFIG_NET_OFFLOAD=y
   CONFIG_NET_GSO=y
   CONFIG_NET_TCP_OFFLOAD=y
   CONFIG_NET_UDP_OFFLOAD=y
   CONFIG_NET_UDPPROTO_OPTIONS=y
   
   CONFIG_NET_GRO=y
   ```
   - Take the TCP as an example, perform streaming and use the wireshark to 
capture packets on tap0 interface. We will be able to see the complete TCP 
packets instead of the fragmented packet.
   


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