I think we can help.We have a free standalone driver package offered under a BSD-2 license (way more permissive than GNU GPL). And it contains a web server demo based on lwIP (TCP/IP). You can request our driver package at: www.code-time.com Regards
No, and there never will be. Intel has apparently abandoned the Cyclone V and lower end markets (eg you will notice there is no Quartus Prime Standard or Lite 19.1 release to go with the 19.1 Pro release).
Xilinx makes this very easy. If you have a choice, you would be smart to switch. Although Vivado FPGA tools are garbage compared to Quartus (they at least maintain them), the Xilinx SoC tools are well done and easy to use. There is a vast amount of support on the Xilinx forums and elsewhere and a Zedboard is a cheap and easy way to learn the Xilinx SoC using the free version of Vivado. The FreeRTOS with lwip example projects show how to use the EMAC driver if you really want to do baremetal (which I'd advise against).
And now Quartus Pro is up to Rev 19.2 while Standard and Lite are at 18.1 (going on two years behind). Apparently the people saying Intel has abandoned everything except high end data center chips were correct.