Re: [lwip-users] Which PPP implementation should be used? PPP-new or PPP from the master branch

[Sylvain Rochet]

Hello Charles,

On Tue, Apr 01, 2014 at 11:57:03AM +0000, address@hidden wrote:
> Hi Sylvain,
> 
> Thanks for your support. 
> 
> I didn't know it doesn't support PPP server. Any plans to add PPP 
> server ? What needs be done in order to support PPP server?

Answering both in one bundle, since answers to them ended up to be 
mixed.

First, it builds if you set PPP_SERVER for a unix build because I 
already done all the required port to lwIP on this part, there are some 
remaining FIXME inside PPP_SERVER parts which must be fixed before 
expecting doing a build for an embedded device, but none of them are 
looking hard to fix for any experienced C developer.

However, some work is required to add a way to get logins and passwords 
in order to authenticate clients. pppd code using /etc/ppp/pap-secrets 
and /etc/ppp/chap-secrets is obviously disabled.

But, a huge work is required to add passive interface (= waiting for 
something, = server) support to lwIP PPP stack (in ppp.c), and PPP lower 
layers require attention as well, which should be only waiting for 
PPPoS, PADO and PADS for PPPoE and full LNS support for PPPoL2TP.

Sylvain

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