Re: [lwip-users] lwip with & without OS (need help & advice)

[Kieran Mansley]

On 20 Apr 2011, at 17:04, sanjib das wrote:

> lwip with OS (say Linux): 
> -- does it mean lwip stack will be initialized as part of Linux kernel?

No.

> -- in that case does the Linux kernel bypasses its own TCP/IP stack?

No.

> -- If lwip is not initialized as part of linux kernel, then can we run it as 
> user space process?

Yes!  This is the normal way it is used with Linux.  When running with an OS on 
a microcontroller though it may well be the only stack, and not really be the 
same as a user-level stack within a process as is done in the Linux (actually 
unix) port 

> lwip without OS:
> -- does it mean lwip can be ported solely as an OS in a micro-controller chip?

Not quite sure what you mean here, but lwIP can operate on a micro-controller 
without an operating system providing things like threads, etc.  lwIP isn't the 
OS in this case, there just isn't one.

> Can we port it with Linux (either as kernel or user space module)?

Yes, although you don't need to because this port has already been done.  See 
the contrib/ports/unix directory.

> Is there any document 
> on how to port with linux?

No, but see the above example.

Kieran