Operating System Development

303 readers

1 users here now

A place to discuss the world of operating system development. Open for all architectures.

Rules

Keep all posts related to operating systems development.
Keep conversations in english.
Don't be a jerk. While we don't want to spoonfeed it's still important to stay nice.

Resources

osdev wiki
Operating System Development Discord
- Unrelated to this community.

Icon base by Lorc under CC BY 3.0 with modifications to add a gradient

founded 1 year ago

MODERATORS

[email protected]

Can eBPF be used to modify the list of WiFi networks? (lemmy.zip)

submitted 11 months ago* (last edited 11 months ago) by [email protected] to c/[email protected]

2 comments fedilink hide all child comments

Can eBPF be used to modify the list of WiFi networks visible to the user via NetworkManager? Hide some of them, add or modify info of the others....

Or even better, modify it on yet the lower level such that any application that polls the list via system API would receive a modified list.

The is about eBPF only

top 2 comments

sorted by: hot top controversial new old

[–] deadbeef 2 points 11 months ago (1 children)

It seems to be plausible, I'd guess you need to use XDP or something similar to it to drop/alter 80211 packets at the data layer.

https://github.com/SIOTLAB/FLIP/tree/master This may be a good place to start

Alternatively netlink could be another route to research https://www.kernel.org/doc/html/next/userspace-api/netlink/intro.html It seems this is a way the kernel talks to userspace networking applications like iw im not sure about NetworkManager in particular.

It's probably more effort than worth it doing this through ebpf is my two cents, what is this for?

[–] [email protected] 1 points 11 months ago

research