OpenWrt support for Asus RT-AX53U

[vevere]

Hi,

@marceli : never run iperf3 on the router itself, you can do that if your router is a a powerful x86_64
but on all socs the result of doing this is something like:

[SUM]   0.00-10.00  sec   621 MBytes   521 Mbits/sec                  sender
[SUM]   0.00-10.00  sec   613 MBytes   514 Mbits/sec                  receiver

because:

For information:
There is a new patch on the snapshots about routing perf between lan and wan:

2 Gbps WAN/LAN NAT Routing on ramips MT7621 devices

18th of April 2023 Update Here is some information to prevent repeat questions directed at me. This won't be on 22.03, only newer versions will have it as the patch was made at that time frame, and there's no need to spend time and effort backporting to older versions. For the devices listed under the "RGMII2 pins are used with an external phy on these:" and "RGMII2 pins are used as GPIO on these:" lists, the feature will work with changes on the devicetree of the said device, except some rare…

To summerize:
before: slow routing lan <-> wan but fast switching (use case: dumb AP with wan included in br-lan)
now: near gb routing lan <-> wan but switching between lan and wan is now slower

So take care on how you plug your ethernet wires

As a exemple, with today's snapshot and switching only (br-lan including the 4 ifaces and no wan+wan6):
You need to reboot the router after each fw conf change, I don't know why but it seams that FW changes now need a reboot to work

1. uplink on WAN and no offloading (with or sw offloading, no hw offloading):

iperf3.exe -c 192.168.0.2 -bidir -P8
[SUM]   0.00-10.00  sec  1.09 GBytes   940 Mbits/sec                  sender
[SUM]   0.00-10.00  sec  1.09 GBytes   940 Mbits/sec                  receiver

2. uplink on WAN with hw offloading, lower perf:

iperf3.exe -c 192.168.0.2 -bidir -P8
[SUM]   0.00-10.00  sec  1.04 GBytes   896 Mbits/sec                  sender
[SUM]   0.00-10.00  sec  1.04 GBytes   895 Mbits/sec                  receiver

Now in router mode doing nat (I made a reset and let all the defaults):

1. uplink on WAN and no offloading (with or sw offloading, no hw offloading):

iperf3.exe -c 192.168.0.2 -bidir -P8
[SUM]   0.00-10.00  sec  1.08 GBytes   925 Mbits/sec                  sender
[SUM]   0.00-10.00  sec  1.08 GBytes   925 Mbits/sec                  receiver

To be honest, that is a little better (933 Mbits/sec) with SW offloading

2. uplink on WAN with hw offloading, better perf than before:

iperf3.exe -c 192.168.0.2 -bidir -P8
[SUM]   0.00-10.00  sec  1.09 GBytes   939 Mbits/sec                  sender
[SUM]   0.00-10.00  sec  1.09 GBytes   938 Mbits/sec                  receiver

Results are better than with my other MT7621 device (Cudy WR1300) as you can read here:

2 Gbps WAN/LAN NAT Routing on ramips MT7621 devices

Hi, I try to understand this very interesting patch. Before your patch: poor rooting perf in router mode (wan <-> br-lan) good switching perf in full bridged mode (br-lan containing all the interfaces WAN + LAN[1-x] as I do each time I use a router as an AP) After your patch: good rooting perf (twice as before) in router mode (wan <-> lan) poor switching perf (half as before) between "WAN" device and "LANx" device in full bridged mode (br-lan containing all the interfaces WAN + LAN[1-x]…

Perhaps they are working on this patch (I have a today's snapshot on the Asus), perhaps the ax53u is a little bit more powerfull (and as I have Wifi off for this test there is more CPU available for routing)