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Steven Ihde | 10 Aug 2003 19:36
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Fwd: [PATCH 2.6.0-test3] ppp_generic.c: fix PPP compression


Hi,

I neglected to send this to linux-ppp and Paul Mackerras when I sent
it to the LKML.  Sorry about that.

Please apply if it looks OK.

Thanks,

Steve  (remove "nospam4me." to reply)

----- Forwarded message -----

Date: Sun, 10 Aug 2003 00:47:53 -0700
From: Steven Ihde <sihde <at> cs.nospam4me.stanford.edu>
To: linux-kernel <at> vger.kernel.org
Cc: shemminger <at> osdl.org
Subject: [PATCH 2.6.0-test3] ppp_generic.c: fix PPP compression

Hi all,

A typo in ppp_generic.c broke handling of CCP_CONFACK messages and
thus PPP compression.... this one-liner fixes it (worked for me,
anyway).  Patch is against 2.6.0-test3.

Thanks,

Steven Ihde (remove "nospam4me." to reply)
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Paul Mackerras | 11 Aug 2003 11:43
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Re: Fwd: [PATCH 2.6.0-test3] ppp_generic.c: fix PPP compression

Steven Ihde writes:

> I neglected to send this to linux-ppp and Paul Mackerras when I sent
> it to the LKML.  Sorry about that.
> 
> Please apply if it looks OK.

A similar patch has already gone to Dave Miller.

Thanks anyway,
Paul.
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Gabor Z. Papp | 12 Aug 2003 08:59
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PPPoE Oops with 2.4.22-rc

I'm getting Oopses at reboots while pppoe module loaded.

Linux 2.4.22-pre* and -rc*
pppd version 2.4.2b3

The ksymoops output attached, more details at
http://gzp.odpn.net/tmp/linux-pppoe-oops/

ksymoops 2.4.9 on i686 2.4.22-rc2-gzp1.  Options used
     -V (default)
     -k /proc/ksyms (default)
     -l /proc/modules (default)
     -o /lib/modules/2.4.22-rc2-gzp1/ (default)
     -m /usr/src/linux/System.map (default)

Warning: You did not tell me where to find symbol information.  I will
assume that the log matches the kernel and modules that are running
right now and I'll use the default options above for symbol resolution.
If the current kernel and/or modules do not match the log, you can get
more accurate output by telling me the kernel version and where to find
map, modules, ksyms etc.  ksymoops -h explains the options.

Oops: 0002
CPU:    0
EIP:    0010:[<e0ed9bce>]    Tainted: PF
Using defaults from ksymoops -t elf32-i386 -a i386
EFLAGS: 00010286
eax: ddf0ba20   ebx: ddf843c0   ecx: c02747a8   edx: 00000000
esi: ddf0ba20   edi: 00000000   ebp: dd697ef4   esp: dd697ebc
ds: 0018   es: 0018   ss: 0018
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Geraldo Lopes de souza | 15 Aug 2003 16:53
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How to know that a ppp connection is using software compression ?

Hi,

How can I know that a ppp connection has negotiated software compression
(bsd etc) with the ISP ?

Thanks in advance

Geraldo Lopes de Souza

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Bill Unruh | 15 Aug 2003 19:55
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Re: How to know that a ppp connection is using software compression ?

On Fri, 15 Aug 2003, Geraldo Lopes de souza wrote:

> Hi,
> 
> How can I know that a ppp connection has negotiated software compression
> (bsd etc) with the ISP ?

It probably has not. Most ISPs run software(eg Microsoft) which does not
support any of the comressions that Linux supports (bsd, etc) Also,
since your modem already compresses, software compression is useful if
you have a slow connection between your modem and your computer (or the
isp has) or you are connecting over a non-compressing link-- ethernet,
etc. Ie, it usually is not very useful.

Anyway, to finally answer your question, enable debugging, ( put 
debug
into /etc/ppp/options and put the line
daemon.*;local2.* 		/var/log/ppplog
into /etc/syslog.conf and then do 
killall -1 syslogd

Then after a ppp connection look into /var/log/ppplog for the lines
which talk about CCP and see if compression is enabled.

> 
> Thanks in advance
> 
> Geraldo Lopes de Souza
> 
>
(Continue reading)

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James Carlson | 16 Aug 2003 07:10

Re: How to know that a ppp connection is using software compression ?

Bill Unruh writes:
> Then after a ppp connection look into /var/log/ppplog for the lines
> which talk about CCP and see if compression is enabled.

Alternatively, use the 'pppstats -z' command to display compression
statistics.  If the numbers are all zero, then CCP isn't doing
anything.

--

-- 
James Carlson                                  <carlson <at> workingcode.com>
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mark wayne | 18 Aug 2003 18:33
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Connection problem: PPP and mobile phones

I'm trying to set up a test site to use the WAP gateway (which I have 
succesfully built -- www.kannel.com). However, in trying to make a PPP 
connection from my WAP phone to the Linux server I get an LCP terminated by 
peer error.

For outbound traffic I know the PPP works -- I can use it to connect to an 
ISP. However, when I try to use my 6310 to dial in, I get the LCP 
termination error. What I find strange is that I don't get any LCP 
termination request packets (LCP TermReq), just the error message that the 
peer closed the connection.

Here is the PPP stuff from the log file:

Aug 17 01:40:55 me kernel: PPP generic driver version 2.4.2
Aug 17 01:40:55 me pppd[1445]: pppd 2.4.1 started by root, uid 0
Aug 17 01:40:55 me pppd[1445]: pppd 2.4.1 started by root, uid 0
Aug 17 01:40:55 me pppd[1445]: using channel 1
Aug 17 01:40:56 me pppd[1445]: Using interface ppp0
Aug 17 01:40:56 me pppd[1445]: Using interface ppp0
Aug 17 01:40:56 me pppd[1445]: Connect: ppp0 <--> /dev/ttyS1
Aug 17 01:40:56 me pppd[1445]: Connect: ppp0 <--> /dev/ttyS1
Aug 17 01:40:56 me pppd[1445]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <auth 
pap> <magic 0x5e131c25> <pcomp> <accomp>]
Aug 17 01:40:56 me /etc/hotplug/net.agent: assuming ppp0 is already up
Aug 17 01:40:56 me pppd[1445]: rcvd [LCP ConfAck id=0x1 <asyncmap 0x0> <auth 
pap> <magic 0x5e131c25> <pcomp> <accomp>]
Aug 17 01:40:58 me pppd[1445]: rcvd [LCP ConfReq id=0x2 <pcomp> <accomp> 
<asyncmap 0x0>]
Aug 17 01:40:58 me pppd[1445]: sent [LCP ConfAck id=0x2 <pcomp> <accomp> 
<asyncmap 0x0>]
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James Carlson | 18 Aug 2003 21:05

Re: Connection problem: PPP and mobile phones

mark wayne writes:
> For outbound traffic I know the PPP works -- I can use it to connect to an 
> ISP. However, when I try to use my 6310 to dial in, I get the LCP 
> termination error. What I find strange is that I don't get any LCP 
> termination request packets (LCP TermReq), just the error message that the 
> peer closed the connection.
> 

> Aug 17 01:40:56 me pppd[1445]: Using interface ppp0
> Aug 17 01:40:56 me pppd[1445]: Using interface ppp0

By the way, the duplicated messages here mean that your
/etc/syslog.conf file is slightly misconfigured.  There are two rules
that match the messages of interest, and both rules put the messages
into the the same file.

> Aug 17 01:40:58 me pppd[1445]: rcvd [PAP AuthReq id=0x1 user="web" 
> password=<hidden>]
> Aug 17 01:41:00 me ppp(pam_unix)[1445]: session opened for user web by 
> (uid=0)
> Aug 17 01:41:00 me pppd[1445]: user web logged in
> Aug 17 01:41:00 me pppd[1445]: user web logged in
> Aug 17 01:41:01 me pppd[1445]: local  IP address 192.168.2.2
> Aug 17 01:41:01 me pppd[1445]: local  IP address 192.168.2.2

This is curious.  Why do you have _some_ of the debug level messages
and not others?  There should have been a lot of PPP negotiation
messages interspersed in there, but they're missing.

> Aug 17 01:41:02 me pppd[1445]: LCP terminated by peer
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Dalibor Kranjcic | 19 Aug 2003 11:25
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modem multiplexing mode?


Hi,

Is there any way to send additional traffic (AT commands) to serial port
(/dev/ttyS1 (COM2) in my example) when ppp is attached to it, thus
providing something as a modem multiplexing mode/protocol, since
/dev/ttyS1 is locked by pppd and used by ppp modules. 

I tried to use /dev/ttyS12 as virtual port for COM2, which would
allow sending of additional data flow to COM2 independently from the
data flow which is already sent trough /dev/ttyS1 (ppp traffic).

So, I expect write to /dev/ttyS12 to activate rs_interrupt_single method
which does the actual write in serial driver. 
Once I'm in rs_interrupt_single method I
would redirect the incoming user space data to TX lines for COM2.

The write to /dev/ttyS12 fails with EIO Input/Output error, I suppose
because there is no UART defined for this device and some initialization
stuff doesn't go trough.

I'm wondering if there is any way to activate rs_interrupt_single method
in serial.c or for /dev/ttyS12 or in other words is there any way to
have more (virtual) tty device files for the same COM? 

Thanks for any advice...

Dalibor Kranjcic.

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Gmane