ethernet services Altera HAL

I've ported the AN374 "Video over IP" to a Cyclone V device and it works fine.

This solution didn't use a TSE and SGDMA cores to interface the MCU to the hardware.

The software is based on Altera HAL and configures the hardware just only to run the demo application.

I need to add a TCP/IP stack to implement ethernet services like ARP,DHCP client, ICMP, IGMPv3 etc.

The Nios II wizard has a "ready" solution based on uCOS + iniche stack but it's requires a TSE and SGDMA into the hardware. Another solution can be to implement the Lwip stack but I suppose that needs the same requirements.

Can you suggest how is the better way to begin?

Adding uCOS or a different OS? Can I use Altera HAL?

What kind of TCP/IP stack I can use? What is the better maintained/complete (many features)?

Thanks in advance for your answers!