[HECnet] DECnet broken with 4.4.0-151 kernel

[John Forecast]

> On Jun 25, 2019, at 4:58 PM, Robert Armstrong <bob at jfcl.com> wrote:
> 
> > John Forecast <john at forecast.name <mailto:john at forecast.name>> wrote:
>  
> >   I have DECnet running on a Raspberry Pi which appears to be using kernel 4.14.52+. 
>  
>   Are you using Raspbian?    I probably should have added that I’m using Ubuntu xenial 16.04 and 4.4.0 is the latest official kernel for that.  I’ve heard that you can upgrade to later kernels, but I haven’t tried it yet.  Other people have reported problems getting DECnet working un Ubuntu 18.04 so I figured it wasn’t worth it.
>  
>   What changes did you have to make to get DECnet working?  On 16.04 it does require a few hacks…
>  
> Thanks,
> Bob

My reply with an attached .zip file did not seems to make it so I’ve made it available through dropbox:

	<https://www.dropbox.com/s/apmy08ydd9jjo6e/decnet-6_25_2019.zip?dl=0 <https://www.dropbox.com/s/apmy08ydd9jjo6e/decnet-6_25_2019.zip?dl=0>>

This is a snapshot of my decnet directory and dnprogs from about a year ago when I got this working. The base kernel was cloned by:

	git clone —depth=1 -branch rpi-4.14.y https://github.com/raspberrypi/linux <https://github.com/raspberrypi/linux>

Extract all the files from the above zip file and:

1. Copy files from the zip file include directory to <kernel>/include/net

2. Replace the <kernel>/net/decnet directory with the zip file decnet directory

3. Config to add decnet support and rebuild kernel+modules

I have no idea if this will work with newer kernels.

I made a few changes to the original source code I received:

Kernel code:

	Added special handling for the 0 area:

		Connect to 0.0 connects to the local node
		Connect to 0.n connects to node “n” in the local node’s area

Utility programs:

	Fixed a number of bugs in cterm and DAP especially related to talking to Tops-10.

	Allow the DAP utilities (dncopy, dntype etc) to use DECnet-Ultrix syntax for specifying access control infomation:

		node/username/password/account::

	which avoids the double quoting required to use the VMS syntax on Linux. To enable this feature, create an environment variable called
	USE_ULTRIX_SYNTAX

Given that Raspberry Pi just released their version of Debian Buster which uses kernel 4.19.x I’ll probably take a look at getting running there and create a github repository for the changes. I need to finish my current project so it will probably be a couple of weeks or so.

  John.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sonic.net/pipermail/hecnet-list/attachments/20190626/462db6bb/attachment.html>