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DM3TT > LINUX 04.04.23 01:10l 111 Lines 3514 Bytes #999 (999) @ WW
BID : 34XDB0LHR01H
Read: GUEST
Subj: Re: Crashes in kernel ax25
Path: IW8PGT<I3XTY<IZ3LSV<DB0ERF<DB0RBS<DB0LHR
Sent: 230403/2306z @:DB0LHR.#BW.DEU.EU [OpenBCM Lahr Baden] obcm1.08-5-g2f4a LT
From: DM3TT @ DB0LHR.#BW.DEU.EU (Thomas)
To: LINUX @ WW
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>>From i0ojj@i0ojj.ampr.org Mon Apr 3 12:02:39 2023
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>>From: Gustavo Ponza <i0ojj@i0ojj.ampr.org>
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>Hi Thomas and all,
Hi Gustavo
Thank you for the reply
...
>Probable the kernel or the ax25 package or both,
>are causing the crashes, then they are not
>suitable for our scope.
Today I have found some info in this document:
https://www.darc.de/fileadmin/filemounts/referate/vus/tagungen/2022/VUS-Bericht_zur_HAM_RADIO_2022.pdf
On page 32 it says:
--- Start of quote --
Linux-AX.25
https://www.ampr.org/grants/2021-grants/grant-fixing-the-linux-kernel-ax-25
Grant: Fixing the Linux kernel AX.25
Date: December 2021
Amount: €179,690
Changes to the Linux kernel over the years have improved and modernized the
kernel, but
have also made existing AX.25 implementations incompatible and turned
preexisting
issues into bugs. This can make systems unpredictable or even unusable. Linux
kernel
development is complex, requiring deep specialized knowledge, and bugs are hard
to trace.
This may be one of the reasons, why the Linux kernel AX.25 stack is currently
in such a
bad state.
This ARDC grant funds will allow the Deutscher Amateur Radio Club to hire
software
developers who can create a stable Linux AX.25 implementation and prevent
Linux
distributions from dropping pre-compiled AX.25 support. The fixed and
functional Kernel-
AX.25 stack will improve global amateur radio infrastructure. Professional
kernel
development can bring Linux AX.25 back to life.
Learn more at https://www.linux-ax25.org/wiki/Main_Page.
--- End of quote ---
Browsing the web I could not find more details on this initiative's progress.
>I'm using running kelnel 5.15.94 and ax25 set
>from the unoffial site of VE7FET and all is steady
>rock.
>So, at first, you can try to compile and install
>the ax25 kit from:
>
>--------
>#!/bin/bash
>wget https://github.com/ve7fet/linuxax25/archive/master.zip
>--------
>
>and see if the failure is cured.
Thanks for the clue.
The compilation here stops with an error.
It seems VE7FET's code needs to be updated to work with libncurses
6.4.20230311-8.2 what Tumbleweed here is using. It is nearly impossible to
downgrade a roling release distro.
>If not, the failures are on the kernel side .. and
>so kernel or SUSE distribution must be downgraded.
IMHO, it should be done the other way round. The kernel stuff should be
updated, resp. repaired, in order to work with up to date distributions such as
Tumbleweed.
>For a big improvement try to install the QtTermTCP
>from G8BPQ,running on X11 over the QT5 libraries
I need something which can do TCP/IP over AX.25 over radio. It also should be
able to talk IP with the kernel. Can LINBPQ do this?
The BPQ docs are a bit spread in pieces.
>--
>73 and ciao, gustavo i0ojj/ir0aab/ir0eq
>non multa, sed multum
>
73
Thomas, DM3TT, JN49GM
QRV in packet padio via DB0HRF 9k6 + 144.900 MHz 1k2
BBS DM3TT@DB0LHR.#BW.DEU.EU
/ACK
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