Re: Problem with "persist" on PPP 2.4.3 under Linux Kernel 2.6.9

[Frank Krauss <fmfkrauss@mindspring.com>]

Hello Bhaskar,

Thank you very much for telling me where this Fix goes.
I will look into trying it out on my System.

Meanwhile, just for your information, the 2.4.1 version of PPP is working
perfect with the "persist" option.

Thanks again,

Frank

=====================================
On Sun, 23 Jan 2005, Bhaskar wrote:
> Hi,
> The patch I have added is in 2.4.0.  In 2.4.3 it is in tty_disestablish_ppp.
> 
> -Bhaskar
> Frank Krauss wrote:
> 
> >Hello Bhaskar,
> >
> >Thank you very much for the Patch.
> >
> >I had gone back to the 2.4.0 version of PPP where the "persist" option is
> >running perfect with Kernel 2.6.9.
> >
> >When I got your Code, I did some research on it.
> >Unfortunately, there is no function called "disestablish_ppp" in
> >sys-linux.c in the PPP 2.4.3 version that I have.
> >
> >The only two functions whose names are similar to this are
> >"tty_disestablish_ppp" and "generic_disestablish_ppp".
> >
> >Would you be able to tell me where you found this Patch?
> >Would you be able to give me the actual patch file, where the line numbers are
> >mentioned?
> >
> >Thank you again very much for taking an interest in my Problem.
> >
> >Yours truly,
> >
> >Frank
> >
> >=====================================
> >
> >On Sat, 22 Jan 2005, Bhaskar wrote:
> >  
> >
> >>Hi,
> >>Even I had faced this problem.  I found that its because of some bug in 
> >>the linux kernel itself.  I don't exactly know where is the problem.  
> >>But I found a small patch added to ppp code which solved the problem.
> >>If you enable "debug" option and also give the logfile, you would see 
> >>one error displayed saying it could not open the channel #  and the 
> >>channel number changes and never connects. 
> >>
> >>The patch added is
> >>
> >>        if (!looped && ifunit >= 0 && ioctl(ppp_dev_fd, PPPIOCDETACH) < 0) {
> >>            int flags;
> >>
> >>            error("Couldn't release PPP unit: %m");
> >>            close(ppp_dev_fd);
> >>            ppp_dev_fd = open("/dev/ppp", O_RDWR);
> >>            if (ppp_dev_fd < 0)
> >>                fatal("Couldn't open /dev/ppp: %m");
> >>            flags = fcntl(ppp_dev_fd, F_GETFL);
> >>            if (flags = -1
> >>                || fcntl(ppp_dev_fd, F_SETFL, flags | O_NONBLOCK) = -1)
> >>                warn("Couldn't set /dev/ppp to nonblock: %m");
> >>        }
> >>
> >>in sys-linux.c file and the function name is disestablish_ppp().
> >>
> >>This should work if you are still facing the problem.
> >>
> >>-Bhaskar
> >>Frank Krauss wrote:
> >>
> >>    
> >>
> >>>Hello Ankit,
> >>>
> >>>Thank you very much for your response.
> >>>
> >>>Unfortunately, in my case, I don't believe that the method you suggested is
> >>>feasable.
> >>>
> >>>My connection supports a Web/Ftp/Game Server and thus has to be connected to
> >>>the Internet and available 24/7 so that my potential clients can see my Web
> >>>page and play the Game that I offer.
> >>>
> >>>I have been running my system using the "persist" option to keep me connected to
> >>>the Internet for over a year and its worked perfectly.
> >>>
> >>>I believe that there must be some type of Bug in the "persist" area of the Code
> >>>that is going bad.
> >>>
> >>>Thank you again for your suggestion.
> >>>
> >>>Frank
> >>>
> >>>=====================================
> >>>
> >>>On Wed, 19 Jan 2005, Desai, Ankit (Export) wrote:
> >>> 
> >>>
> >>>      
> >>>
> >>>>You can try and use diald option, which will try to reconnect to the
> >>>>internet on demand/use. So, even if you are offline, and there is a demand
> >>>>for internet connection, it will try to reconnect on its own.
> >>>>
> >>>>Just make sure, you configure diald correctly, it is a little bit tricky.
> >>>>
> >>>>Regards,
> >>>>Ankit
> >>>>
> >>>>-----Original Message-----
> >>>>From: Frank Krauss [mailto:fmfkrauss@mindspring.com]
> >>>>Sent: Wednesday, January 19, 2005 1:30 PM
> >>>>To: linux-ppp@vger.kernel.org
> >>>>Subject: Problem with "persist" on PPP 2.4.3 under Linux Kernel 2.6.9
> >>>>
> >>>>
> >>>>Good day,
> >>>>
> >>>>I'm having a problem that I can't seem to find any indication of a fix on
> >>>>GOOGLE for and so I'm hoping that someone on this list can point me in
> >>>>the correct direction.
> >>>>
> >>>>I'm running Linux Kernel 2.6.9 on a Pentium 4 using the Caldera
> >>>>Distribution.
> >>>>I installed PPP 2.4.3 and have been using it successfully for a couple of
> >>>>days.  My problem with it is the following:
> >>>>
> >>>>I'm running a 24/7 Server and after every 12 Hour period, my I.S.P,
> >>>>which is Mindspring/Earthlink, drops my connection.
> >>>>I have the "persist" option specified to take care of this problem and so
> >>>>PPP should re-connect successfully.  This worked perfect with my previous
> >>>>system using Kernel 2.4.22 and PPP 2.4.1.
> >>>>
> >>>>Unfortunatly, the "persist" option dosn't seem to be working correctly for
> >>>>me.  At the moment the line gets dropped, PPP now gives me the following
> >>>>messages in my /var/log/messages file:
> >>>>  tcflush failed: Input/output error
> >>>>  Modem hangup
> >>>>  tcsetattr: Invalid argument (line 962)
> >>>>  tcsetattr: Invalid argument (line 1001)
> >>>>  Exit.
> >>>>
> >>>>This causes me to have to bring up PPP again myself rather than having
> >>>>the "persist" option work as it should.
> >>>>
> >>>>This has happened each time for the last (3) re-cycle attempts with the
> >>>>exact same messages.
> >>>>
> >>>>If anyone has knowledge of a fix to correct this problem or an option
> >>>>to use, I would be glad to try them out.
> >>>>
> >>>>My Environment is:
> >>>>Computer:     Pentium-4
> >>>>Distribution: Caldera 2.3
> >>>>Kernel:       2.6.9
> >>>>GCC:          3.4.3
> >>>>GLIBC:        2.3.3
> >>>>PPP:          2.4.3
> >>>>
> >>>>Any assistance that someone could give me to solve this problem
> >>>>would be greatly appreciated.
> >>>>
> >>>>Yours truly,
> >>>>
> >>>>Frank Krauss
> >>>> 
> >>>>-
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> >>>>   
> >>>>
> >>>>        
> >>>>
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> >>>
> >>> 
> >>>
> >>>      
> >>>
> >>-
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> >>    
> >>
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> >
> 
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