Re: [lwip-users] lwip+gprs+ppp over serial

[Sylvain Rochet]

Hi,

On Tue, Jun 21, 2016 at 05:53:05PM +0200, Gennaro Zazo wrote:
> 
> Attached the log, I apologize if it is rude. If you need to change the
> debug mask let me know.

The garbaged log probably means you are violating lwIP threading 
constraints. You can notice that PPP negotiated up to a running session 
in your log, which is quite a good news.

The pppos_input() function in lwIP 1.4.x is not thread safe, maybe 
that's the issue. You could try setting PPP_INPROC_MULTITHREADED but the 
name is misleading, that's only IRQ safe (i.e. safe with one way 
preemption and different priority) but not thread safe.

Or better, you could try lwIP 2.0.0 Beta1, where the PPP stack was fully 
reworked if not totally rewritten.

Sylvain

signature.asc
Description: Digital signature