Re: [lwip-users] how lwip know internet cable is unplug

[Simon Goldschmidt]

address@hidden wrote:
> Thanks for the tip. set_link_up/down looks pretty safe to use from my 
> rx-thread (rx handled by a separate thread triggered by eth-interrupt). Is
> it the callback that need to be protected from threding issues?

Even if it is now, it is only so by chance and you shouldn't rely on it. Such 
mixed threading code is a no-go, you only risk producing bugs that are *very* 
hard to track down later. Just do it right now and be safe: it's just the lwIP 
principle that things like this are not protected from concurrent access by the 
lwIP core code.

Simon
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