Hi,
If I understand you correctly, basically your issue is you have send it data traffic to RGMII Rx interface of TSE MAC IP but nothing come out from TSE IP Avalon ST Rx interface to user logic design, right ?
I looked into your sim waveform and I can see that a lot of red colour signal which looks like your TSE IP is not initialized properly, including both reset signal. (enet_resetn and phy_resetn).
Just wonder did you initialized all your input signal (set some default value to all input signals) of your test bench before you start sim data traffic flow ?
Also, I have commented in your other forum post that perhaps it's good idea to checkout some TSE example design as reference.
Thanks.
Regards,
dlim