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appletalk: remove ipddp driver
After the cops driver is removed, ipddp is now the only CONFIG_DEV_APPLETALK but as far as I can tell, this also has no users and can be removed, making appletalk support purely based on ethertalk, using ethernet hardware. Link: https://lore.kernel.org/netdev/e490dd0c-a65d-4acf-89c6-c06cb48ec880@app.fastmail.com/ Link: https://lore.kernel.org/netdev/9cac4fbd-9557-b0b8-54fa-93f0290a6fb8@schmorgal.com/ Cc: Doug Brown <doug@schmorgal.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20231009141139.1766345-1-arnd@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Arnd Bergmann
Jakub Kicinski
parent
f0107b864f
commit
1dab47139e
10 changed files with 31 additions and 533 deletions
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@ -59,7 +59,6 @@ Contents:
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gtp
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ila
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ioam6-sysctl
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ipddp
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ip_dynaddr
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ipsec
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ip-sysctl
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@ -1,78 +0,0 @@
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.. SPDX-License-Identifier: GPL-2.0
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=========================================================
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AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation
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=========================================================
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Documentation ipddp.c
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This file is written by Jay Schulist <jschlst@samba.org>
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Introduction
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------------
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AppleTalk-IP (IPDDP) is the method computers connected to AppleTalk
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networks can use to communicate via IP. AppleTalk-IP is simply IP datagrams
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inside AppleTalk packets.
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Through this driver you can either allow your Linux box to communicate
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IP over an AppleTalk network or you can provide IP gatewaying functions
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for your AppleTalk users.
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You can currently encapsulate or decapsulate AppleTalk-IP on LocalTalk,
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EtherTalk and PPPTalk. The only limit on the protocol is that of what
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kernel AppleTalk layer and drivers are available.
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Each mode requires its own user space software.
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Compiling AppleTalk-IP Decapsulation/Encapsulation
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==================================================
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AppleTalk-IP decapsulation needs to be compiled into your kernel. You
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will need to turn on AppleTalk-IP driver support. Then you will need to
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select ONE of the two options; IP to AppleTalk-IP encapsulation support or
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AppleTalk-IP to IP decapsulation support. If you compile the driver
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statically you will only be able to use the driver for the function you have
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enabled in the kernel. If you compile the driver as a module you can
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select what mode you want it to run in via a module loading param.
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ipddp_mode=1 for AppleTalk-IP encapsulation and ipddp_mode=2 for
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AppleTalk-IP to IP decapsulation.
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Basic instructions for user space tools
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=======================================
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I will briefly describe the operation of the tools, but you will
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need to consult the supporting documentation for each set of tools.
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Decapsulation - You will need to download a software package called
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MacGate. In this distribution there will be a tool called MacRoute
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which enables you to add routes to the kernel for your Macs by hand.
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Also the tool MacRegGateWay is included to register the
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proper IP Gateway and IP addresses for your machine. Included in this
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distribution is a patch to netatalk-1.4b2+asun2.0a17.2 (available from
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ftp.u.washington.edu/pub/user-supported/asun/) this patch is optional
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but it allows automatic adding and deleting of routes for Macs. (Handy
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for locations with large Mac installations)
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Encapsulation - You will need to download a software daemon called ipddpd.
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This software expects there to be an AppleTalk-IP gateway on the network.
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You will also need to add the proper routes to route your Linux box's IP
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traffic out the ipddp interface.
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Common Uses of ipddp.c
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----------------------
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Of course AppleTalk-IP decapsulation and encapsulation, but specifically
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decapsulation is being used most for connecting LocalTalk networks to
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IP networks. Although it has been used on EtherTalk networks to allow
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Macs that are only able to tunnel IP over EtherTalk.
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Encapsulation has been used to allow a Linux box stuck on a LocalTalk
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network to use IP. It should work equally well if you are stuck on an
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EtherTalk only network.
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Further Assistance
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-------------------
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You can contact me (Jay Schulist <jschlst@samba.org>) with any
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questions regarding decapsulation or encapsulation. Bradford W. Johnson
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<johns393@maroon.tc.umn.edu> originally wrote the ipddp.c driver for IP
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encapsulation in AppleTalk.
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@ -1459,7 +1459,6 @@ F: drivers/hwmon/applesmc.c
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APPLETALK NETWORK LAYER
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L: netdev@vger.kernel.org
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S: Odd fixes
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F: drivers/net/appletalk/
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F: include/linux/atalk.h
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F: include/uapi/linux/atalk.h
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F: net/appletalk/
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@ -45,7 +45,6 @@ obj-$(CONFIG_MHI_NET) += mhi_net.o
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# Networking Drivers
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#
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obj-$(CONFIG_ARCNET) += arcnet/
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obj-$(CONFIG_DEV_APPLETALK) += appletalk/
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obj-$(CONFIG_CAIF) += caif/
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obj-$(CONFIG_CAN) += can/
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obj-$(CONFIG_NET_DSA) += dsa/
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@ -1,72 +0,0 @@
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# Appletalk driver configuration
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#
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config ATALK
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tristate "Appletalk protocol support"
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select LLC
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help
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AppleTalk is the protocol that Apple computers can use to communicate
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on a network. If your Linux box is connected to such a network and you
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wish to connect to it, say Y. You will need to use the netatalk package
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so that your Linux box can act as a print and file server for Macs as
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well as access AppleTalk printers. Check out
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<http://www.zettabyte.net/netatalk/> on the WWW for details.
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EtherTalk is the name used for AppleTalk over Ethernet and the
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cheaper and slower LocalTalk is AppleTalk over a proprietary Apple
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network using serial links. EtherTalk and LocalTalk are fully
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supported by Linux.
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General information about how to connect Linux, Windows machines and
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Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. The
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NET3-4-HOWTO, available from
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<http://www.tldp.org/docs.html#howto>, contains valuable
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information as well.
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To compile this driver as a module, choose M here: the module will be
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called appletalk. You almost certainly want to compile it as a
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module so you can restart your AppleTalk stack without rebooting
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your machine. I hear that the GNU boycott of Apple is over, so
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even politically correct people are allowed to say Y here.
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config DEV_APPLETALK
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tristate "Appletalk interfaces support"
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depends on ATALK
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help
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AppleTalk is the protocol that Apple computers can use to communicate
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on a network. If your Linux box is connected to such a network, and wish
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to do IP over it, or you have a LocalTalk card and wish to use it to
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connect to the AppleTalk network, say Y.
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config IPDDP
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tristate "Appletalk-IP driver support"
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depends on DEV_APPLETALK && ATALK
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help
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This allows IP networking for users who only have AppleTalk
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networking available. This feature is experimental. With this
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driver, you can encapsulate IP inside AppleTalk (e.g. if your Linux
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box is stuck on an AppleTalk only network) or decapsulate (e.g. if
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you want your Linux box to act as an Internet gateway for a zoo of
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AppleTalk connected Macs). Please see the file
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<file:Documentation/networking/ipddp.rst> for more information.
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If you say Y here, the AppleTalk-IP support will be compiled into
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the kernel. In this case, you can either use encapsulation or
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decapsulation, but not both. With the following two questions, you
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decide which one you want.
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To compile the AppleTalk-IP support as a module, choose M here: the
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module will be called ipddp.
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In this case, you will be able to use both encapsulation and
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decapsulation simultaneously, by loading two copies of the module
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and specifying different values for the module option ipddp_mode.
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config IPDDP_ENCAP
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bool "IP to Appletalk-IP Encapsulation support"
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depends on IPDDP
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help
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If you say Y here, the AppleTalk-IP code will be able to encapsulate
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IP packets inside AppleTalk frames; this is useful if your Linux box
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is stuck on an AppleTalk network (which hopefully contains a
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decapsulator somewhere). Please see
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<file:Documentation/networking/ipddp.rst> for more information.
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@ -1,6 +0,0 @@
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# SPDX-License-Identifier: GPL-2.0-only
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#
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# Makefile for drivers/net/appletalk
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#
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obj-$(CONFIG_IPDDP) += ipddp.o
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@ -1,345 +0,0 @@
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/*
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* ipddp.c: IP to Appletalk-IP Encapsulation driver for Linux
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* Appletalk-IP to IP Decapsulation driver for Linux
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*
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* Authors:
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* - DDP-IP Encap by: Bradford W. Johnson <johns393@maroon.tc.umn.edu>
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* - DDP-IP Decap by: Jay Schulist <jschlst@samba.org>
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*
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* Derived from:
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* - Almost all code already existed in net/appletalk/ddp.c I just
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* moved/reorginized it into a driver file. Original IP-over-DDP code
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* was done by Bradford W. Johnson <johns393@maroon.tc.umn.edu>
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* - skeleton.c: A network driver outline for linux.
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* Written 1993-94 by Donald Becker.
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* - dummy.c: A dummy net driver. By Nick Holloway.
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* - MacGate: A user space Daemon for Appletalk-IP Decap for
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* Linux by Jay Schulist <jschlst@samba.org>
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*
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* Copyright 1993 United States Government as represented by the
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* Director, National Security Agency.
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*
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* This software may be used and distributed according to the terms
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* of the GNU General Public License, incorporated herein by reference.
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*/
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#include <linux/compat.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/netdevice.h>
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#include <linux/etherdevice.h>
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#include <linux/ip.h>
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#include <linux/atalk.h>
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#include <linux/if_arp.h>
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#include <linux/slab.h>
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#include <net/route.h>
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#include <linux/uaccess.h>
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#include "ipddp.h" /* Our stuff */
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static const char version[] = KERN_INFO "ipddp.c:v0.01 8/28/97 Bradford W. Johnson <johns393@maroon.tc.umn.edu>\n";
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static struct ipddp_route *ipddp_route_list;
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static DEFINE_SPINLOCK(ipddp_route_lock);
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#ifdef CONFIG_IPDDP_ENCAP
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static int ipddp_mode = IPDDP_ENCAP;
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#else
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static int ipddp_mode = IPDDP_DECAP;
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#endif
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/* Index to functions, as function prototypes. */
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static netdev_tx_t ipddp_xmit(struct sk_buff *skb,
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struct net_device *dev);
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static int ipddp_create(struct ipddp_route *new_rt);
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static int ipddp_delete(struct ipddp_route *rt);
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static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt);
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static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
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void __user *data, int cmd);
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static const struct net_device_ops ipddp_netdev_ops = {
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.ndo_start_xmit = ipddp_xmit,
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.ndo_siocdevprivate = ipddp_siocdevprivate,
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.ndo_set_mac_address = eth_mac_addr,
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.ndo_validate_addr = eth_validate_addr,
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};
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static struct net_device * __init ipddp_init(void)
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{
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static unsigned version_printed;
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struct net_device *dev;
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int err;
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dev = alloc_etherdev(0);
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if (!dev)
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return ERR_PTR(-ENOMEM);
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netif_keep_dst(dev);
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strcpy(dev->name, "ipddp%d");
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if (version_printed++ == 0)
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printk(version);
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/* Initialize the device structure. */
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dev->netdev_ops = &ipddp_netdev_ops;
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dev->type = ARPHRD_IPDDP; /* IP over DDP tunnel */
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dev->mtu = 585;
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dev->flags |= IFF_NOARP;
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/*
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* The worst case header we will need is currently a
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* ethernet header (14 bytes) and a ddp header (sizeof ddpehdr+1)
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* We send over SNAP so that takes another 8 bytes.
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*/
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dev->hard_header_len = 14+8+sizeof(struct ddpehdr)+1;
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err = register_netdev(dev);
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if (err) {
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free_netdev(dev);
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return ERR_PTR(err);
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}
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/* Let the user now what mode we are in */
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if(ipddp_mode == IPDDP_ENCAP)
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printk("%s: Appletalk-IP Encap. mode by Bradford W. Johnson <johns393@maroon.tc.umn.edu>\n",
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dev->name);
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if(ipddp_mode == IPDDP_DECAP)
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printk("%s: Appletalk-IP Decap. mode by Jay Schulist <jschlst@samba.org>\n",
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dev->name);
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return dev;
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}
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/*
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* Transmit LLAP/ELAP frame using aarp_send_ddp.
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*/
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static netdev_tx_t ipddp_xmit(struct sk_buff *skb, struct net_device *dev)
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{
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struct rtable *rtable = skb_rtable(skb);
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__be32 paddr = 0;
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struct ddpehdr *ddp;
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struct ipddp_route *rt;
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struct atalk_addr *our_addr;
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if (rtable->rt_gw_family == AF_INET)
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paddr = rtable->rt_gw4;
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spin_lock(&ipddp_route_lock);
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/*
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* Find appropriate route to use, based only on IP number.
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*/
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for(rt = ipddp_route_list; rt != NULL; rt = rt->next)
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{
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if(rt->ip == paddr)
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break;
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}
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if(rt == NULL) {
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spin_unlock(&ipddp_route_lock);
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return NETDEV_TX_OK;
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}
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our_addr = atalk_find_dev_addr(rt->dev);
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if(ipddp_mode == IPDDP_DECAP)
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/*
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* Pull off the excess room that should not be there.
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* This is due to a hard-header problem. This is the
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* quick fix for now though, till it breaks.
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*/
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skb_pull(skb, 35-(sizeof(struct ddpehdr)+1));
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/* Create the Extended DDP header */
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ddp = (struct ddpehdr *)skb->data;
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ddp->deh_len_hops = htons(skb->len + (1<<10));
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ddp->deh_sum = 0;
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/*
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* For Localtalk we need aarp_send_ddp to strip the
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* long DDP header and place a shot DDP header on it.
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*/
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if(rt->dev->type == ARPHRD_LOCALTLK)
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{
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ddp->deh_dnet = 0; /* FIXME more hops?? */
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ddp->deh_snet = 0;
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}
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else
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{
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ddp->deh_dnet = rt->at.s_net; /* FIXME more hops?? */
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ddp->deh_snet = our_addr->s_net;
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}
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ddp->deh_dnode = rt->at.s_node;
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ddp->deh_snode = our_addr->s_node;
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ddp->deh_dport = 72;
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ddp->deh_sport = 72;
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*((__u8 *)(ddp+1)) = 22; /* ddp type = IP */
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skb->protocol = htons(ETH_P_ATALK); /* Protocol has changed */
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dev->stats.tx_packets++;
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dev->stats.tx_bytes += skb->len;
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aarp_send_ddp(rt->dev, skb, &rt->at, NULL);
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spin_unlock(&ipddp_route_lock);
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return NETDEV_TX_OK;
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}
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/*
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* Create a routing entry. We first verify that the
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* record does not already exist. If it does we return -EEXIST
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*/
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static int ipddp_create(struct ipddp_route *new_rt)
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{
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struct ipddp_route *rt = kzalloc(sizeof(*rt), GFP_KERNEL);
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if (rt == NULL)
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return -ENOMEM;
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rt->ip = new_rt->ip;
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rt->at = new_rt->at;
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rt->next = NULL;
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if ((rt->dev = atrtr_get_dev(&rt->at)) == NULL) {
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kfree(rt);
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return -ENETUNREACH;
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}
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spin_lock_bh(&ipddp_route_lock);
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if (__ipddp_find_route(rt)) {
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spin_unlock_bh(&ipddp_route_lock);
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kfree(rt);
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return -EEXIST;
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}
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rt->next = ipddp_route_list;
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ipddp_route_list = rt;
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spin_unlock_bh(&ipddp_route_lock);
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return 0;
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}
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/*
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* Delete a route, we only delete a FULL match.
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* If route does not exist we return -ENOENT.
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*/
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static int ipddp_delete(struct ipddp_route *rt)
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{
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struct ipddp_route **r = &ipddp_route_list;
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struct ipddp_route *tmp;
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spin_lock_bh(&ipddp_route_lock);
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while((tmp = *r) != NULL)
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{
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if(tmp->ip == rt->ip &&
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tmp->at.s_net == rt->at.s_net &&
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tmp->at.s_node == rt->at.s_node)
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{
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*r = tmp->next;
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spin_unlock_bh(&ipddp_route_lock);
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kfree(tmp);
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return 0;
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}
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r = &tmp->next;
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}
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|
||||
spin_unlock_bh(&ipddp_route_lock);
|
||||
return -ENOENT;
|
||||
}
|
||||
|
||||
/*
|
||||
* Find a routing entry, we only return a FULL match
|
||||
*/
|
||||
static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt)
|
||||
{
|
||||
struct ipddp_route *f;
|
||||
|
||||
for(f = ipddp_route_list; f != NULL; f = f->next)
|
||||
{
|
||||
if(f->ip == rt->ip &&
|
||||
f->at.s_net == rt->at.s_net &&
|
||||
f->at.s_node == rt->at.s_node)
|
||||
return f;
|
||||
}
|
||||
|
||||
return NULL;
|
||||
}
|
||||
|
||||
static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
|
||||
void __user *data, int cmd)
|
||||
{
|
||||
struct ipddp_route rcp, rcp2, *rp;
|
||||
|
||||
if (in_compat_syscall())
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
if(!capable(CAP_NET_ADMIN))
|
||||
return -EPERM;
|
||||
|
||||
if (copy_from_user(&rcp, data, sizeof(rcp)))
|
||||
return -EFAULT;
|
||||
|
||||
switch(cmd)
|
||||
{
|
||||
case SIOCADDIPDDPRT:
|
||||
return ipddp_create(&rcp);
|
||||
|
||||
case SIOCFINDIPDDPRT:
|
||||
spin_lock_bh(&ipddp_route_lock);
|
||||
rp = __ipddp_find_route(&rcp);
|
||||
if (rp) {
|
||||
memset(&rcp2, 0, sizeof(rcp2));
|
||||
rcp2.ip = rp->ip;
|
||||
rcp2.at = rp->at;
|
||||
rcp2.flags = rp->flags;
|
||||
}
|
||||
spin_unlock_bh(&ipddp_route_lock);
|
||||
|
||||
if (rp) {
|
||||
if (copy_to_user(data, &rcp2,
|
||||
sizeof(struct ipddp_route)))
|
||||
return -EFAULT;
|
||||
return 0;
|
||||
} else
|
||||
return -ENOENT;
|
||||
|
||||
case SIOCDELIPDDPRT:
|
||||
return ipddp_delete(&rcp);
|
||||
|
||||
default:
|
||||
return -EINVAL;
|
||||
}
|
||||
}
|
||||
|
||||
static struct net_device *dev_ipddp;
|
||||
|
||||
MODULE_LICENSE("GPL");
|
||||
module_param(ipddp_mode, int, 0);
|
||||
|
||||
static int __init ipddp_init_module(void)
|
||||
{
|
||||
dev_ipddp = ipddp_init();
|
||||
return PTR_ERR_OR_ZERO(dev_ipddp);
|
||||
}
|
||||
|
||||
static void __exit ipddp_cleanup_module(void)
|
||||
{
|
||||
struct ipddp_route *p;
|
||||
|
||||
unregister_netdev(dev_ipddp);
|
||||
free_netdev(dev_ipddp);
|
||||
|
||||
while (ipddp_route_list) {
|
||||
p = ipddp_route_list->next;
|
||||
kfree(ipddp_route_list);
|
||||
ipddp_route_list = p;
|
||||
}
|
||||
}
|
||||
|
||||
module_init(ipddp_init_module);
|
||||
module_exit(ipddp_cleanup_module);
|
||||
|
|
@ -1,28 +0,0 @@
|
|||
/* SPDX-License-Identifier: GPL-2.0 */
|
||||
/*
|
||||
* ipddp.h: Header for IP-over-DDP driver for Linux.
|
||||
*/
|
||||
|
||||
#ifndef __LINUX_IPDDP_H
|
||||
#define __LINUX_IPDDP_H
|
||||
|
||||
#ifdef __KERNEL__
|
||||
|
||||
#define SIOCADDIPDDPRT (SIOCDEVPRIVATE)
|
||||
#define SIOCDELIPDDPRT (SIOCDEVPRIVATE+1)
|
||||
#define SIOCFINDIPDDPRT (SIOCDEVPRIVATE+2)
|
||||
|
||||
struct ipddp_route
|
||||
{
|
||||
struct net_device *dev; /* Carrier device */
|
||||
__be32 ip; /* IP address */
|
||||
struct atalk_addr at; /* Gateway appletalk address */
|
||||
int flags;
|
||||
struct ipddp_route *next;
|
||||
};
|
||||
|
||||
#define IPDDP_ENCAP 1
|
||||
#define IPDDP_DECAP 2
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
#endif /* __LINUX_IPDDP_H */
|
||||
|
|
@ -246,7 +246,7 @@ source "net/bridge/Kconfig"
|
|||
source "net/dsa/Kconfig"
|
||||
source "net/8021q/Kconfig"
|
||||
source "net/llc/Kconfig"
|
||||
source "drivers/net/appletalk/Kconfig"
|
||||
source "net/appletalk/Kconfig"
|
||||
source "net/x25/Kconfig"
|
||||
source "net/lapb/Kconfig"
|
||||
source "net/phonet/Kconfig"
|
||||
|
|
|
|||
30
net/appletalk/Kconfig
Normal file
30
net/appletalk/Kconfig
Normal file
|
|
@ -0,0 +1,30 @@
|
|||
# SPDX-License-Identifier: GPL-2.0-only
|
||||
#
|
||||
# Appletalk configuration
|
||||
#
|
||||
config ATALK
|
||||
tristate "Appletalk protocol support"
|
||||
select LLC
|
||||
help
|
||||
AppleTalk is the protocol that Apple computers can use to communicate
|
||||
on a network. If your Linux box is connected to such a network and you
|
||||
wish to connect to it, say Y. You will need to use the netatalk package
|
||||
so that your Linux box can act as a print and file server for Macs as
|
||||
well as access AppleTalk printers. Check out
|
||||
<http://www.zettabyte.net/netatalk/> on the WWW for details.
|
||||
EtherTalk is the name used for AppleTalk over Ethernet and the
|
||||
cheaper and slower LocalTalk is AppleTalk over a proprietary Apple
|
||||
network using serial links. EtherTalk and LocalTalk are fully
|
||||
supported by Linux.
|
||||
|
||||
General information about how to connect Linux, Windows machines and
|
||||
Macs is on the WWW at <http://www.eats.com/linux_mac_win.html>. The
|
||||
NET3-4-HOWTO, available from
|
||||
<http://www.tldp.org/docs.html#howto>, contains valuable
|
||||
information as well.
|
||||
|
||||
To compile this driver as a module, choose M here: the module will be
|
||||
called appletalk. You almost certainly want to compile it as a
|
||||
module so you can restart your AppleTalk stack without rebooting
|
||||
your machine. I hear that the GNU boycott of Apple is over, so
|
||||
even politically correct people are allowed to say Y here.
|
||||
Loading…
Reference in a new issue