5 ms·

Yes it's good idea and nicely executed. For the same reason I created a couple of projects with the same goal of lowering the barrier to entry to the linux ker

by xxdd2ea 10mo ago

Yes it's good idea and nicely executed. For the same reason I created a couple of projects with the same goal of lowering the barrier to entry to the linux kernel: - an app to follow the UDP packet flow in the linux kernel source code: https://dmkskd.github.io/linux-kernel-network-stack-visualization/ https://dmkskd.github.io/linux-kernel-network-stack-visualiz... - a (hopefully) simple way to play with the linux kernel source code on a mac: https://github.com/dmkskd/linux-kernel-debugging-on-mac https://github.com/dmkskd/linux-kernel-debugging-on-mac Kudos to https://github.com/FlorentRevest https://github.com/FlorentRevest for all his work in the space

glenneroo 10mo ago
I love your UDP packet flow tool, kudos for making that! I've always wondered how packets move through an OS. Also interesting how many gotos I see all over the place, even though everyone says "goto is the devil". Then again maybe this code was written long before that "proverb" came into existence.
- Fnoord 10mo ago
  Since you mentioned you love that, I will mention this netfilter packet flowchart by Jan Engelhardt [1] [1] https://en.wikipedia.org/wiki/File%3ANetfilter-packet-flow.svg https://en.wikipedia.org/wiki/File%3ANetfilter-packet-flow.s...
- xxdd2ea 10mo ago
  Thanks! I suggest to have a look at a 'live' debugger session video here: https://github.com/dmkskd/linux-kernel-debugging-on-mac?tab=readme-ov-file#debugging-using-visual-studio-code https://github.com/dmkskd/linux-kernel-debugging-on-mac?tab=... given your interest if you have an ARM64 mac (sorry for only supporting this OS at the moment) it should be easy to set this up on your end
itopaloglu83 10mo ago
One of the best introductions to how kernel works was implementing a timer based context switching RTOS on a microcontroller, so little lines of code but something to build up over and jump into the linux kernel.

by xxdd2ea 10mo ago

glenneroo 10mo ago

I love your UDP packet flow tool, kudos for making that! I've always wondered how packets move through an OS. Also interesting how many gotos I see all over the place, even though everyone says "goto is the devil". Then again maybe this code was written long before that "proverb" came into existence.

Fnoord 10mo ago
Since you mentioned you love that, I will mention this netfilter packet flowchart by Jan Engelhardt [1] [1] https://en.wikipedia.org/wiki/File%3ANetfilter-packet-flow.svg https://en.wikipedia.org/wiki/File%3ANetfilter-packet-flow.s...
xxdd2ea 10mo ago
Thanks! I suggest to have a look at a 'live' debugger session video here: https://github.com/dmkskd/linux-kernel-debugging-on-mac?tab=readme-ov-file#debugging-using-visual-studio-code https://github.com/dmkskd/linux-kernel-debugging-on-mac?tab=... given your interest if you have an ARM64 mac (sorry for only supporting this OS at the moment) it should be easy to set this up on your end

itopaloglu83 10mo ago

One of the best introductions to how kernel works was implementing a timer based context switching RTOS on a microcontroller, so little lines of code but something to build up over and jump into the linux kernel.