Documentation for nvram settings?

[henrikk]

So, is there any documentation for 2000+ nvram settings? For example, I see 'misc_ping_x=0' which I suspect, when enabled, tells the router to respond to ping on the WAN. I do not know this for certain. I could experiment, but documentation might be nice.

Perhaps GPL source code? If so, where can I find it?

I stumbled on the above because I was interested in temporarily enabling ping on the WAN for some testing I was doing. It appears ping on WAN is not a GUI option (or did I just miss it)?

- Henrik

 

[henrikk]

To answer my own questions, I found the sources, but outside of that, is there any documentation anywhere?

- Henrik

 

[ryzhov_al]

Some basic NVRAM vars is described in CFE code, other — used only in firmware as a simple variables. I don't think someone will describe purpose for all used variables in his project. You have to dig into code for details about.

 

[Dusan]

It appears ping on WAN is not a GUI option (or did I just miss it)?

Try here:
Firewall - General - Respond Ping Request from WAN

 

[RMerlin]

There is no documentation, because nvram vars are used all over the firmware for all kind of purposes. You have to study and understand the code to figure out what a specific nvram value is meant for, and the format of the data it contains.

The only kind of reference you could find is the list of all default nvram vars and their default values, as defined in router/shared/defaults.c.

 

[henrikk]

Try here:
Firewall - General - Respond Ping Request from WAN

Thanks! I missed it.

- Henrik

 

[henrikk]

There is no documentation, because nvram vars are used all over the firmware for all kind of purposes. You have to study and understand the code to figure out what a specific nvram value is meant for, and the format of the data it contains.

The only kind of reference you could find is the list of all default nvram vars and their default values, as defined in router/shared/defaults.c.

Thanks Merlin. I will look at the source code.

- Henrik

 

[henrikk]

Some basic NVRAM vars is described in CFE code, other — used only in firmware as a simple variables. I don't think someone will describe purpose for all used variables in his project. You have to dig into code for details about.

Awesome! This helps me get started.

- Henrik

 

[vdemarco]

Awesome! This helps me get started.

- Henrik

If you do end up making a document from the source please post it here.

THanks.