managed to port the driver to linux-5.4.
So far it works with its own incorporated ap-solution. Maybe we could give it another try to get it working with cfg8021. I guess that after kernel 3.x a lot has changed in the cfg8021 related stuff and that's why its not working out of the box. If you are interested I am happy to share the patches ...
After a couple of days of trying the driver I have to say that it works just so much better than the mt76. Higher speeds, better reach and smooth roaming between the 5 and 2.4 ghz bands when using the same SSID for both cards.
wait...the proprietary drivers have proper roaming support ?
I know you've only tested with the 7615 driver, but in theory could we have mt7603, mt7612, mt7615 proprietary drivers with working 802.11r ?
I guess I can stop thinking about selling my mtk routers then...
For me the Roaming works quite reliable between 5ghz and 2.4 on the same machine. No idea if roaming between multiple routers works and how to set it up ...
Regarding the peak throughput: on current master I get max 35 MB/s from my synology with mt76, but >40 MB/s with the proprietary driver. On linux-4.14 the speeds were better with mt76 compared to the proprietary driver, but only slightly.
I think it’s fantastic what the mt76 people achieved, but I had constant trouble with disconnected devices, unreachable WiFi printers and sound devices (which still persists in the most recent mt76 version). The proprietary driver simply just works in my set up. As soon as the mt76 works reliable for my needs I will happily switch back.
I have an tplink archer c2 and netgear r6220 with this family of chipset. Both of them are showing odd behavior (the tplink has unreliable wifi, the netgear keeps dropping connection and becomes unstable). I am willing/available to do some testing with the official driver if its still necessary.