PPPD questions.

[Joel Sherrill]

Mike Siers wrote:
> 
> Hi Ilya,
> Have you looked at the pppd 2.3.11 man page?  I believe
> their is a option for setting the remote and local
> IP values <local-ip-address:remote-ip-address>.  There
> should also be option settings for specifying the netmask,
> DNS, and gateway.
> 
> My goal in this port was to try and use the standard pppd
> option strings instead of having to determine which global
> variables are used for setting a particular option.

If the changes are clean enough, can they be handled in
a mannger that the pppd maintainers will merge them?

You CAN depend on __rtems__ being defined for conditionals.

> I am glad to here the server side works.  I will look into
> removing all the exit function calls.  But how do you think
> these cases should be handled?  If the pppd code is hitting
> an exit function call, then removing the function call will
> not fix the problem.

I would recommend defining exit as ppp_exit and writing a
ppp_exit function that printed an indication of the failure.
You are right, there is no point in shutting down the entire
application but ppp has failed in this case.  

-Dexit=ppp_exit

This trick has worked for me on SOME benchmark/test programs.

> Also, I will make the other changes you requested.  They are
> listed below.
> 
>   1) rename error function in pppd/utils.c
>   2) add RTEMS_PPPD_TASK_PRIORITY value
>   3) remove the unessecary files from the pppd directory
>   4) change example code to use correct ticks per second value
> 
> Thanks for trying it,
> Mike Siers
> 
> -----Original Message-----
> From: Ilya Alexeev [mailto:ilya at continuum.ru]
> Sent: Friday, August 03, 2001 1:29 PM
> To: Mike Siers
> Subject: PPPD questions.
> 
> Hello Mike,
> 
> Today I tried your pppd.
> It is works, but I have some questions and suggestions.
> 
> 1. How to correct assign "local IP address"?
> I am using Win98 ppp client for rtems pppd.
> That, which I specify in the
> rtems_bsdnet_ifconfig (netconfig.h) does not work.
> I was compelled to specify it in ipcp.c
> (before "Could not determine local IP address" message).
> 
> 2. Playing with the authorization I has met function 'exit'
> (in the file auth.c).
> This function completely switches down my RTEMS :-)
> By the way, file options.c also have 'exit'.
> 
> 3. Your example have this code:
>    /* sleep 10 seconds and call connect function */
>    rtems_task_wake_after(1000);
> I have a 1000 ticks in second, so I think that using
> something like GET_TICKS_PER_SECOND is more right :)
> 
> That is all yet..
> 
> Bye, Ilya.
> 
> --------------------------------------------------
> Centre for Engineering and Technology "Continuum+"
> Ilya Alexeev                       Yaroslavl
> ilya at continuum.ru                  Russia
> 
> Hello Mike,
> 
> Sorry, I was out of town some weeks
> and could not answer your letters.
> 
> MS> I am putting together a patch for the latest snapshot
> MS> for my pppd changes.  Could you please forward the
> MS> changes you made to the modem/ppp_tty.c and termios.c
> MS> files?  I would like to get all these changes merged
> MS> into one patch file that we can submit for the next
> MS> snapshot release.
> 
> This changes are very bad and they are not by me.
> 
> They eliminated not the reason but the consequence of a problem,
> and some hardware-dependent (strange...)
> 
> Some moments of this changes: (by the author's explanation)
> 
> 1. 'modem_sendpacket' function (ppp_tty.c) necessary
> to be the separate task (I don't know why)
> 
> 2. Process stops while waiting the clearing of termios output buffer,
> so then we waits too long, just flush this buffer by
> clearing header and footer pointers (with loosing some data, of course).
> 
> 3. Periodically (I do not know when) manually call the part of code
> from the port's interrupt handler which is responsible
> for 'rtems_termios_dequeue_characters'.
> 
> I don't understand this strange changes, so I don't want to give them
> to other people...
> 
> MS> Have you tried pppd 2.3.11 yet?  I am interested if
> MS> it is working for others.
> 
> Today I tried your latest ppp sources.
> After some attempts they are compiled :-)
> I have no time to test them, only to run yet.
> 
> I have a number of remarks and offers:
> 
> 1. Function 'error' in pppd/utils.c is conflicting with the
> 'error' function in rtems_webserver.
> 
> 2. I think that using macros CONFIGURE_INIT_TASK_PRIORITY and so on
> for ppp tasks is not good. I got many errors after including system.h
> to the several files. May be macro such RTEMS_PPPD_PRIORITY somewhere
> in rtemspppd.h(?) is more good?
> 
> 3. I think this files needs to be removed from pppd directory:
>    init.c
>    pppdapp.c
>    netconfig.h
>    system.h
> 
> 4. Do you tried to use your rtems-pppd as a server?
> I saw that your ppp application tries to connect to the server
> a number of times, and than writes something like "Connection terminated".
> I am more interesting in using my rtems box at the ppp server.
> Which changes I should make for this purpose?
> Can this pppd give out to the client all addresses (IP address, Netmask,
> DNS, Gateway)?
> 
> MS> Thanks
> MS> Mike Siers
> 
> Big thanks for your diligence and attention.
> 
> Bye, Ilya.
> 
> --------------------------------------------------
> Centre for Engineering and Technology "Continuum+"
> Ilya Alexeev                       Yaroslavl
> ilya at continuum.ru                  Russia

-- 
Joel Sherrill, Ph.D.             Director of Research & Development
joel at OARcorp.com                 On-Line Applications Research
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