Netmap Kernel - OPNsense 22.1.7

[spetrillo]

Hello all,

I have read all the information about the netmap kernel for 20.1 of OPNsense. Is this now built into 22.1 or do I need to add it as either a plugin or a CLI update? I have a LAGG that spans most of my VLAN enabled interfaces and want to run Zen Armor in native mode.

Thanks,
Steve

[mb]

Hi @spetrillo,

That work was meant to tackle the most pressing issues on the netmap side. The developments have already been incorporated into the OPNsense source. So it's all there.

Having said that, there are still some other areas that need to be addressed. lagg(4) is one of them.

To our experience, almost all major netmap related problems stem from driver incompatibilities. The underlying reason is that netmap mangles heavily with device drivers to be able to make maximum use of their capabilities and speed.

This totally makes sense from a performance perspective; however comes with the penalty that it is very hard to maintain.

We're tinkering around with an idea of a netmap emulated driver which will behave like a BPF interface and will support inline operations.

This is currently in the idea phase. We'll update the community once we have something more concrete.

[spetrillo]

So what is my best option for Zen Armor?? Emulated mode?