[WIP] Implement basic managed ethernet switch with mac learning and vlan support

[Kilobyte22]

This implements an Ethernet Switch. It has been laying around for weeks without any work done, but is mostly working. I've just now rebased it ontop the current 1.16.5. It does compile, but i have not tested it since.

Features:

• Shows up as a component for configuration
• Learns MAC Addresses and therefore doen't need to flood every packet
• Somewhat tested in order to give routers two interfaces (using two VLANs)
• includes a small script in the plan9fs to configure the switch
• default configuration is a dumb switch which just passes all VLANs through but does support mac learning

Missing:

• Graphics
• The configuration script is very shitty and doesn't support all features of the "hardware"

[fnuecke]

Very cool, thanks! Will have a closer look as soon as possible. And I'll see about making a custom model.

[fnuecke]

I'd probably make this a Long2ObjectMap to avoid the boxing of the key; I can do that after the merge though. Long2ObjectArrayMap would probably be sufficient with the number of devices I'd expect on such a network?

[Kilobyte22]

I am not quite sure on the performance characteristics, but i think a realistic number would be < 50. Fairly sure thats good enough.

[Kilobyte22]

I do probably want to add some improvements going forward, but since it should be working right now, I can just add them at a later stage. After all the entire Mod is currently mostly a prototype.

[Kilobyte22]

I believe i ruined things with git magic during a rebase. I'll see about sorting that out at some point

[Kilobyte22]

This PR should now be at the same state as when it was originally created. I still want to make a few modifications before this gets merged. In particular i want to change the management channel to in-band, which would in theory make it possible to write a linux kernel driver with DSA support.

[Kilobyte22]

I'm having issues with the switch not showing up as a hardware component. It seems it didn't work since i rebased it to 1.18. Other blocks (redstone, projector etc) are detected just fine. Do you have any idea what i'm doing wrong?

[fnuecke]

Thanks for the reminder in Discord; will try to have a look soon!

[fnuecke]

Think I found it, the switch block currently returns a network hub tile-entity, and that one doesn't have callbacks.

[ajh123]

@Kilobyte22 I would like to use this switch, but I cant seem to configure it to forward packets. I enabled trunking on all ports, but that does nothing. The ping is not getting through.

[Kilobyte22]

do you mind posting a screenshot of your config and your host table?

[ajh123]

Can you tell me where to find them?

[ajh123]

Is this one of them?

[ajh123]

Is this the other?

[Kilobyte22]

https://github.com/Paranoidlabs/oc2/blob/d38e683abbc6815715cc67398a05d9a2e9ca4b3c/src/main/scripts/bin/swconfig.lua you can this script (it should be available on your computer somewhere in /mnt i believe) to dump both of them.

[ajh123]

I did use that script to enable trunking on all ports