Re: [lwip-users] LwIP in Power save mode

[address@hidden]

Am 14.12.2018 um 10:59 schrieb Amena El Homsi:
> Hi,
>
> Most embedded systems have a power save mode in which memory is shut 
> down and the state is saved in a non-volatile memory.
>
> Does LwIP have a list of variables that should be saved and restored to 
> resume proper functionality?

No.

I guess for a network stack, it's not *that* easy to just save some 
variables and resume. You need to save state, not variables. And that 
requires thinking: what state do you need to preserve; how long have you 
been powered down, etc. For example, it doesn't make sense to try and 
let TCP connections survive such a RAM power-down.

lwIP should provide all APIs to resume (if not, add them!), but you'll 
have to add your own code to use them.

Simon