Discussion:
Proposal to remove FDDI support
(too old to reply)
Jason Thorpe
2020-01-14 04:52:15 UTC
Permalink
Hey folks --

I am proposing that we remove support for FDDI. For those not familiar, FDDI (Fiber Distributed Data Interface) is/was a 100Mb/s (or 200Mb/s, in some dual-attached-station configurations) token passing network that was able to run fairly long distances. Back in its heyday (mid-90s), it was a popular for use as a campus backbone. As its name implies, it was originally a fiber interconnect, but was available over twisted-pair copper, as well (CDDI).

Matt Thomas wrote our FDDI code, along with a driver for the DEC "PDQ" FDDI controllers, which were found on PCI (DEFPA), EISA (DEFEA), and TURBOchannel (DEFTA) boards.

Alas, FDDI's time has passed. It is no longer particularly useful (Ethernet being superior in speed these days), and the interfaces not particularly common. As far as I know, we never supported any FDDI interfaces other than the DEC "PDQ" types (e.g. no Sun SBus FDDI interfaces). This code is not MP-safe, and the lack of commonly-available hardware will make it practically impossible to test updates to the code.

I believe it's time to let it go.

Code in question:

net/if_fddi.h
net/if_fddisubr.c

dev/ic/pdq.c
dev/ic/pdqreg.h
dev/ic/pdqvar.h
dev/ic/pdq_ifsubr.c

dev/eisa/if_fea.c

dev/pci/if_fpa.c

dev/tc/if_fta.c

Are there any objections?

-- thorpej


--
Posted automagically by a mail2news gateway at muc.de e.V.
Please direct questions, flames, donations, etc. to news-***@muc.de
Jason Thorpe
2020-01-20 18:43:43 UTC
Permalink
Post by Jason Thorpe
I am proposing that we remove support for FDDI.
Since there were no objections, FDDI has been removed. If someone wants to resurrect it and make it MP-safe, it can be found in the Attic.

-- thorpej


--
Posted automagically by a mail2news gateway at muc.de e.V.
Please direct questions, flames, donations, etc. to news-***@muc.de
Patrick Welche
2020-01-20 21:37:20 UTC
Permalink
Post by Jason Thorpe
Post by Jason Thorpe
I am proposing that we remove support for FDDI.
Since there were no objections, FDDI has been removed. If someone wants to resurrect it and make it MP-safe, it can be found in the Attic.
ISTR maxv@ had made an attic list, but can't remember where it is...

Cheers,

Patrick

--
Posted automagically by a mail2news gateway at muc.de e.V.
Please direct questions, flames, donations, etc. to news-***@muc.de
Paul Goyette
2020-01-20 22:59:14 UTC
Permalink
Post by Jason Thorpe
Post by Jason Thorpe
I am proposing that we remove support for FDDI.
Since there were no objections, FDDI has been removed. If someone wants to resurrect it and make it MP-safe, it can be found in the Attic.
up
This is the attic. The only exit is stairs that lead down.
A large coil of rope is lying in the corner.
On a table is a nasty-looking knife.
There is a square brick here which feels like clay.


:)


+--------------------+--------------------------+-----------------------+
| Paul Goyette | PGP Key fingerprint: | E-mail addresses: |
| (Retired) | FA29 0E3B 35AF E8AE 6651 | ***@whooppee.com |
| Software Developer | 0786 F758 55DE 53BA 7731 | ***@netbsd.org |
+--------------------+--------------------------+-----------------------+

--
Posted automagically by a mail2news gateway at muc.de e.V.
Please direct questions, flames, donations, etc. to news-***@muc.de
Loading...