On Jun 25, 2019, at 11:36 AM, Robert Armstrong <bob at jfcl.com> wrote: Anybody else out there running DECnet on Linux? I recently upgraded from the 4.4.0-148 kernel to 4.4.0-151 and find that DECnet does not work with the latter. Connections always seem to hang at minimum, and frequently cause kernel panics. Has anybody found a fix for this, or is this the end of the road? BTW, 4.4.0-151 was released recently to fix the TCP SACK kernel panic problem? Bob

On Jun 25, 2019, at 4:14 PM, William Pechter <pechter at gmail.com> wrote: If you have it available I would love it on my Raspberry Pi. Is it posted to any download locations. Having the Pi talking to the Vaxstation 3100 Model 38 would be slick. Sent from pechter at gmail.com -----Original Message----- From: John Forecast <john at forecast.name> To: "hecnet at update.uu.se" <hecnet at Update.UU.SE> Sent: Tue, 25 Jun 2019 13:29 Subject: Re: [HECnet] DECnet broken with 4.4.0-151 kernel Hi Bob, I have DECnet running on a Raspberry Pi which appears to be using kernel 4.14.52+. I can send you a zip file with the latest code I have. John.

John Forecast <john at forecast.name> wrote:

I have DECnet running on a Raspberry Pi which appears to be using kernel 4.14.52+.

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.

Old versions of Raspbian can be downloaded from: <http://downloads.raspberrypi.org/raspbian/images/> Given the dates on my file system, I would say ?raspbian-2018-06-29?. You can upgrade the userland code but don?t update the kernel after you build the modified version. John.

I rebuilt the NetBSD kernel on a VAXstation-2000 once. Took almost a week :) Bob

FWIW, I do this regularly at the museum with several DECserver-300s and a Linux VM, running Ubuntu 12.10 running the standard-for-then DECnet stack. Works great. I use LAT on it more than anything else, though. Just a data point. -Dave On June 27, 2019 11:33:39 PM Gregg Levine <gregg.drwho8 at gmail.com> wrote: -- Dave McGuire, AK4HZ New Kensington, PA

Hello! I can well imagine that. Hence my comment. I've got an ongoing idea/issue/problem with trying to get a DEC Terminal Server Model 90L family member to communicate with a running example of Linux and the DEC Networking stuff. Shortly after buying an Ethernet hub, who had an AUI port in front and a COAX one in back, and regular RJ45 style ones also on the back, at VCF East, I did make an effort. I'll probably try again both on that Dell I mentioned and eventually via the Pi and an appropriate kernel.. I certainly don't think we are chasing frustrated zebras here, but for me it sometimes seems like it. ----- Gregg C Levine gregg.drwho8 at gmail.com "This signature fought the Time Wars, time and again." On Thu, Jun 27, 2019 at 10:58 PM Robert Armstrong <bob at jfcl.com> wrote: > >> Gregg Levine <gregg.drwho8 at gmail.com> wrote: >> something on the order of all day. > > I rebuilt the NetBSD kernel on a VAXstation-2000 once. Took almost a week :) > > Bob > > >

On Jun 27, 2019, at 8:17 PM, Gregg Levine <gregg.drwho8 at gmail.com> wrote: Hello! Thank you for the files. We are aware that even on a decently sized Pi, such as the Pi3, building a new kernel which for example on my 20 year old P3 Intel machine takes just about an hour, on the Pi last I had heard its something on the order of all day. And that's on it mind. I've no idea how long it takes to cross compile a kernel via either a VM of whatever release name matches the date you selected for your match. I'm not sure what I am going to do, I had originally some idea to setup an AWS instance of Debian (which presupposes that it exists) and do the whole thing in there. Suggests please folks? ----- Gregg C Levine gregg.drwho8 at gmail.com "This signature fought the Time Wars, time and again." On Thu, Jun 27, 2019 at 6:13 PM John Forecast <john at forecast.name> wrote: > > Old versions of Raspbian can be downloaded from: > > <http://downloads.raspberrypi.org/raspbian/images/> > > Given the dates on my file system, I would say ?raspbian-2018-06-29?. You can upgrade the userland code but don?t update the kernel after you build the modified version. > > John. > >> On Jun 27, 2019, at 5:23 PM, Tony Blews <tonyblews at gmail.com> wrote: >> >> I've got a spare Pi I was about to get going and try this on... which >> is the best version of Raspbian to go for? >> >> On 26/06/2019, John Forecast <john at forecast.name> wrote: >> >>> >>> 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. >>> >>> >> >> >> -- >> >> Tony Blews >> tonyblews at gmail.com http://www.tonyblews.co.uk/ >> Mob: +44(0)7832 237251 Twit: @tonyblews >

On Jun 27, 2019, at 8:17 PM, Gregg Levine <gregg.drwho8 at gmail.com> wrote: Hello! Thank you for the files. We are aware that even on a decently sized Pi, such as the Pi3, building a new kernel which for example on my 20 year old P3 Intel machine takes just about an hour, on the Pi last I had heard its something on the order of all day. And that's on it mind. I've no idea how long it takes to cross compile a kernel via either a VM of whatever release name matches the date you selected for your match. I'm not sure what I am going to do, I had originally some idea to setup an AWS instance of Debian (which presupposes that it exists) and do the whole thing in there. Suggests please folks? ----- Gregg C Levine gregg.drwho8 at gmail.com "This signature fought the Time Wars, time and again." On Thu, Jun 27, 2019 at 6:13 PM John Forecast <john at forecast.name> wrote: > > Old versions of Raspbian can be downloaded from: > > <http://downloads.raspberrypi.org/raspbian/images/> > > Given the dates on my file system, I would say ?raspbian-2018-06-29?. You can upgrade the userland code but don?t update the kernel after you build the modified version. > > John. > >> On Jun 27, 2019, at 5:23 PM, Tony Blews <tonyblews at gmail.com> wrote: >> >> I've got a spare Pi I was about to get going and try this on... which >> is the best version of Raspbian to go for? >> >> On 26/06/2019, John Forecast <john at forecast.name> wrote: >> >>> >>> 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. >>> >>> >> >> >> -- >> >> Tony Blews >> tonyblews at gmail.com http://www.tonyblews.co.uk/ >> Mob: +44(0)7832 237251 Twit: @tonyblews >