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Message-Id: <20231009141139.1766345-1-arnd@kernel.org>
Date: Mon, 9 Oct 2023 16:10:28 +0200
From: Arnd Bergmann <arnd@...nel.org>
To: netdev@...r.kernel.org,
"David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Arnd Bergmann <arnd@...db.de>,
Doug Brown <doug@...morgal.com>,
linux-doc@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH] appletalk: remove ipddp driver
From: Arnd Bergmann <arnd@...db.de>
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@...morgal.com>
Signed-off-by: Arnd Bergmann <arnd@...db.de>
---
Documentation/networking/ipddp.rst | 78 -------
MAINTAINERS | 1 -
drivers/net/Makefile | 1 -
drivers/net/appletalk/Kconfig | 72 ------
drivers/net/appletalk/Makefile | 6 -
drivers/net/appletalk/ipddp.c | 345 -----------------------------
drivers/net/appletalk/ipddp.h | 28 ---
net/Kconfig | 2 +-
net/appletalk/Kconfig | 30 +++
9 files changed, 31 insertions(+), 532 deletions(-)
delete mode 100644 Documentation/networking/ipddp.rst
delete mode 100644 drivers/net/appletalk/Kconfig
delete mode 100644 drivers/net/appletalk/Makefile
delete mode 100644 drivers/net/appletalk/ipddp.c
delete mode 100644 drivers/net/appletalk/ipddp.h
create mode 100644 net/appletalk/Kconfig
diff --git a/Documentation/networking/ipddp.rst b/Documentation/networking/ipddp.rst
deleted file mode 100644
index be7091b779274..0000000000000
--- a/Documentation/networking/ipddp.rst
+++ /dev/null
@@ -1,78 +0,0 @@
-.. SPDX-License-Identifier: GPL-2.0
-
-=========================================================
-AppleTalk-IP Decapsulation and AppleTalk-IP Encapsulation
-=========================================================
-
-Documentation ipddp.c
-
-This file is written by Jay Schulist <jschlst@...ba.org>
-
-Introduction
-------------
-
-AppleTalk-IP (IPDDP) is the method computers connected to AppleTalk
-networks can use to communicate via IP. AppleTalk-IP is simply IP datagrams
-inside AppleTalk packets.
-
-Through this driver you can either allow your Linux box to communicate
-IP over an AppleTalk network or you can provide IP gatewaying functions
-for your AppleTalk users.
-
-You can currently encapsulate or decapsulate AppleTalk-IP on LocalTalk,
-EtherTalk and PPPTalk. The only limit on the protocol is that of what
-kernel AppleTalk layer and drivers are available.
-
-Each mode requires its own user space software.
-
-Compiling AppleTalk-IP Decapsulation/Encapsulation
-==================================================
-
-AppleTalk-IP decapsulation needs to be compiled into your kernel. You
-will need to turn on AppleTalk-IP driver support. Then you will need to
-select ONE of the two options; IP to AppleTalk-IP encapsulation support or
-AppleTalk-IP to IP decapsulation support. If you compile the driver
-statically you will only be able to use the driver for the function you have
-enabled in the kernel. If you compile the driver as a module you can
-select what mode you want it to run in via a module loading param.
-ipddp_mode=1 for AppleTalk-IP encapsulation and ipddp_mode=2 for
-AppleTalk-IP to IP decapsulation.
-
-Basic instructions for user space tools
-=======================================
-
-I will briefly describe the operation of the tools, but you will
-need to consult the supporting documentation for each set of tools.
-
-Decapsulation - You will need to download a software package called
-MacGate. In this distribution there will be a tool called MacRoute
-which enables you to add routes to the kernel for your Macs by hand.
-Also the tool MacRegGateWay is included to register the
-proper IP Gateway and IP addresses for your machine. Included in this
-distribution is a patch to netatalk-1.4b2+asun2.0a17.2 (available from
-ftp.u.washington.edu/pub/user-supported/asun/) this patch is optional
-but it allows automatic adding and deleting of routes for Macs. (Handy
-for locations with large Mac installations)
-
-Encapsulation - You will need to download a software daemon called ipddpd.
-This software expects there to be an AppleTalk-IP gateway on the network.
-You will also need to add the proper routes to route your Linux box's IP
-traffic out the ipddp interface.
-
-Common Uses of ipddp.c
-----------------------
-Of course AppleTalk-IP decapsulation and encapsulation, but specifically
-decapsulation is being used most for connecting LocalTalk networks to
-IP networks. Although it has been used on EtherTalk networks to allow
-Macs that are only able to tunnel IP over EtherTalk.
-
-Encapsulation has been used to allow a Linux box stuck on a LocalTalk
-network to use IP. It should work equally well if you are stuck on an
-EtherTalk only network.
-
-Further Assistance
--------------------
-You can contact me (Jay Schulist <jschlst@...ba.org>) with any
-questions regarding decapsulation or encapsulation. Bradford W. Johnson
-<johns393@...oon.tc.umn.edu> originally wrote the ipddp.c driver for IP
-encapsulation in AppleTalk.
diff --git a/MAINTAINERS b/MAINTAINERS
index 92539465eef12..688183517f403 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -1459,7 +1459,6 @@ F: drivers/hwmon/applesmc.c
APPLETALK NETWORK LAYER
L: netdev@...r.kernel.org
S: Odd fixes
-F: drivers/net/appletalk/
F: include/linux/atalk.h
F: include/uapi/linux/atalk.h
F: net/appletalk/
diff --git a/drivers/net/Makefile b/drivers/net/Makefile
index e26f98f897c55..8a83db32509dc 100644
--- a/drivers/net/Makefile
+++ b/drivers/net/Makefile
@@ -45,7 +45,6 @@ obj-$(CONFIG_MHI_NET) += mhi_net.o
# Networking Drivers
#
obj-$(CONFIG_ARCNET) += arcnet/
-obj-$(CONFIG_DEV_APPLETALK) += appletalk/
obj-$(CONFIG_CAIF) += caif/
obj-$(CONFIG_CAN) += can/
obj-$(CONFIG_NET_DSA) += dsa/
diff --git a/drivers/net/appletalk/Kconfig b/drivers/net/appletalk/Kconfig
deleted file mode 100644
index b94f731e45767..0000000000000
--- a/drivers/net/appletalk/Kconfig
+++ /dev/null
@@ -1,72 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Appletalk driver 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.
-
-config DEV_APPLETALK
- tristate "Appletalk interfaces support"
- depends on ATALK
- 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 wish
- to do IP over it, or you have a LocalTalk card and wish to use it to
- connect to the AppleTalk network, say Y.
-
-config IPDDP
- tristate "Appletalk-IP driver support"
- depends on DEV_APPLETALK && ATALK
- help
- This allows IP networking for users who only have AppleTalk
- networking available. This feature is experimental. With this
- driver, you can encapsulate IP inside AppleTalk (e.g. if your Linux
- box is stuck on an AppleTalk only network) or decapsulate (e.g. if
- you want your Linux box to act as an Internet gateway for a zoo of
- AppleTalk connected Macs). Please see the file
- <file:Documentation/networking/ipddp.rst> for more information.
-
- If you say Y here, the AppleTalk-IP support will be compiled into
- the kernel. In this case, you can either use encapsulation or
- decapsulation, but not both. With the following two questions, you
- decide which one you want.
-
- To compile the AppleTalk-IP support as a module, choose M here: the
- module will be called ipddp.
- In this case, you will be able to use both encapsulation and
- decapsulation simultaneously, by loading two copies of the module
- and specifying different values for the module option ipddp_mode.
-
-config IPDDP_ENCAP
- bool "IP to Appletalk-IP Encapsulation support"
- depends on IPDDP
- help
- If you say Y here, the AppleTalk-IP code will be able to encapsulate
- IP packets inside AppleTalk frames; this is useful if your Linux box
- is stuck on an AppleTalk network (which hopefully contains a
- decapsulator somewhere). Please see
- <file:Documentation/networking/ipddp.rst> for more information.
diff --git a/drivers/net/appletalk/Makefile b/drivers/net/appletalk/Makefile
deleted file mode 100644
index d8c7b23ec7ffc..0000000000000
--- a/drivers/net/appletalk/Makefile
+++ /dev/null
@@ -1,6 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0-only
-#
-# Makefile for drivers/net/appletalk
-#
-
-obj-$(CONFIG_IPDDP) += ipddp.o
diff --git a/drivers/net/appletalk/ipddp.c b/drivers/net/appletalk/ipddp.c
deleted file mode 100644
index d558535390f98..0000000000000
--- a/drivers/net/appletalk/ipddp.c
+++ /dev/null
@@ -1,345 +0,0 @@
-/*
- * ipddp.c: IP to Appletalk-IP Encapsulation driver for Linux
- * Appletalk-IP to IP Decapsulation driver for Linux
- *
- * Authors:
- * - DDP-IP Encap by: Bradford W. Johnson <johns393@...oon.tc.umn.edu>
- * - DDP-IP Decap by: Jay Schulist <jschlst@...ba.org>
- *
- * Derived from:
- * - Almost all code already existed in net/appletalk/ddp.c I just
- * moved/reorginized it into a driver file. Original IP-over-DDP code
- * was done by Bradford W. Johnson <johns393@...oon.tc.umn.edu>
- * - skeleton.c: A network driver outline for linux.
- * Written 1993-94 by Donald Becker.
- * - dummy.c: A dummy net driver. By Nick Holloway.
- * - MacGate: A user space Daemon for Appletalk-IP Decap for
- * Linux by Jay Schulist <jschlst@...ba.org>
- *
- * Copyright 1993 United States Government as represented by the
- * Director, National Security Agency.
- *
- * This software may be used and distributed according to the terms
- * of the GNU General Public License, incorporated herein by reference.
- */
-
-#include <linux/compat.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/etherdevice.h>
-#include <linux/ip.h>
-#include <linux/atalk.h>
-#include <linux/if_arp.h>
-#include <linux/slab.h>
-#include <net/route.h>
-#include <linux/uaccess.h>
-
-#include "ipddp.h" /* Our stuff */
-
-static const char version[] = KERN_INFO "ipddp.c:v0.01 8/28/97 Bradford W. Johnson <johns393@...oon.tc.umn.edu>\n";
-
-static struct ipddp_route *ipddp_route_list;
-static DEFINE_SPINLOCK(ipddp_route_lock);
-
-#ifdef CONFIG_IPDDP_ENCAP
-static int ipddp_mode = IPDDP_ENCAP;
-#else
-static int ipddp_mode = IPDDP_DECAP;
-#endif
-
-/* Index to functions, as function prototypes. */
-static netdev_tx_t ipddp_xmit(struct sk_buff *skb,
- struct net_device *dev);
-static int ipddp_create(struct ipddp_route *new_rt);
-static int ipddp_delete(struct ipddp_route *rt);
-static struct ipddp_route* __ipddp_find_route(struct ipddp_route *rt);
-static int ipddp_siocdevprivate(struct net_device *dev, struct ifreq *ifr,
- void __user *data, int cmd);
-
-static const struct net_device_ops ipddp_netdev_ops = {
- .ndo_start_xmit = ipddp_xmit,
- .ndo_siocdevprivate = ipddp_siocdevprivate,
- .ndo_set_mac_address = eth_mac_addr,
- .ndo_validate_addr = eth_validate_addr,
-};
-
-static struct net_device * __init ipddp_init(void)
-{
- static unsigned version_printed;
- struct net_device *dev;
- int err;
-
- dev = alloc_etherdev(0);
- if (!dev)
- return ERR_PTR(-ENOMEM);
-
- netif_keep_dst(dev);
- strcpy(dev->name, "ipddp%d");
-
- if (version_printed++ == 0)
- printk(version);
-
- /* Initialize the device structure. */
- dev->netdev_ops = &ipddp_netdev_ops;
-
- dev->type = ARPHRD_IPDDP; /* IP over DDP tunnel */
- dev->mtu = 585;
- dev->flags |= IFF_NOARP;
-
- /*
- * The worst case header we will need is currently a
- * ethernet header (14 bytes) and a ddp header (sizeof ddpehdr+1)
- * We send over SNAP so that takes another 8 bytes.
- */
- dev->hard_header_len = 14+8+sizeof(struct ddpehdr)+1;
-
- err = register_netdev(dev);
- if (err) {
- free_netdev(dev);
- return ERR_PTR(err);
- }
-
- /* Let the user now what mode we are in */
- if(ipddp_mode == IPDDP_ENCAP)
- printk("%s: Appletalk-IP Encap. mode by Bradford W. Johnson <johns393@...oon.tc.umn.edu>\n",
- dev->name);
- if(ipddp_mode == IPDDP_DECAP)
- printk("%s: Appletalk-IP Decap. mode by Jay Schulist <jschlst@...ba.org>\n",
- dev->name);
-
- return dev;
-}
-
-
-/*
- * Transmit LLAP/ELAP frame using aarp_send_ddp.
- */
-static netdev_tx_t ipddp_xmit(struct sk_buff *skb, struct net_device *dev)
-{
- struct rtable *rtable = skb_rtable(skb);
- __be32 paddr = 0;
- struct ddpehdr *ddp;
- struct ipddp_route *rt;
- struct atalk_addr *our_addr;
-
- if (rtable->rt_gw_family == AF_INET)
- paddr = rtable->rt_gw4;
-
- spin_lock(&ipddp_route_lock);
-
- /*
- * Find appropriate route to use, based only on IP number.
- */
- for(rt = ipddp_route_list; rt != NULL; rt = rt->next)
- {
- if(rt->ip == paddr)
- break;
- }
- if(rt == NULL) {
- spin_unlock(&ipddp_route_lock);
- return NETDEV_TX_OK;
- }
-
- our_addr = atalk_find_dev_addr(rt->dev);
-
- if(ipddp_mode == IPDDP_DECAP)
- /*
- * Pull off the excess room that should not be there.
- * This is due to a hard-header problem. This is the
- * quick fix for now though, till it breaks.
- */
- skb_pull(skb, 35-(sizeof(struct ddpehdr)+1));
-
- /* Create the Extended DDP header */
- ddp = (struct ddpehdr *)skb->data;
- ddp->deh_len_hops = htons(skb->len + (1<<10));
- ddp->deh_sum = 0;
-
- /*
- * For Localtalk we need aarp_send_ddp to strip the
- * long DDP header and place a shot DDP header on it.
- */
- if(rt->dev->type == ARPHRD_LOCALTLK)
- {
- ddp->deh_dnet = 0; /* FIXME more hops?? */
- ddp->deh_snet = 0;
- }
- else
- {
- ddp->deh_dnet = rt->at.s_net; /* FIXME more hops?? */
- ddp->deh_snet = our_addr->s_net;
- }
- ddp->deh_dnode = rt->at.s_node;
- ddp->deh_snode = our_addr->s_node;
- ddp->deh_dport = 72;
- ddp->deh_sport = 72;
-
- *((__u8 *)(ddp+1)) = 22; /* ddp type = IP */
-
- skb->protocol = htons(ETH_P_ATALK); /* Protocol has changed */
-
- dev->stats.tx_packets++;
- dev->stats.tx_bytes += skb->len;
-
- aarp_send_ddp(rt->dev, skb, &rt->at, NULL);
-
- spin_unlock(&ipddp_route_lock);
-
- return NETDEV_TX_OK;
-}
-
-/*
- * Create a routing entry. We first verify that the
- * record does not already exist. If it does we return -EEXIST
- */
-static int ipddp_create(struct ipddp_route *new_rt)
-{
- struct ipddp_route *rt = kzalloc(sizeof(*rt), GFP_KERNEL);
-
- if (rt == NULL)
- return -ENOMEM;
-
- rt->ip = new_rt->ip;
- rt->at = new_rt->at;
- rt->next = NULL;
- if ((rt->dev = atrtr_get_dev(&rt->at)) == NULL) {
- kfree(rt);
- return -ENETUNREACH;
- }
-
- spin_lock_bh(&ipddp_route_lock);
- if (__ipddp_find_route(rt)) {
- spin_unlock_bh(&ipddp_route_lock);
- kfree(rt);
- return -EEXIST;
- }
-
- rt->next = ipddp_route_list;
- ipddp_route_list = rt;
-
- spin_unlock_bh(&ipddp_route_lock);
-
- return 0;
-}
-
-/*
- * Delete a route, we only delete a FULL match.
- * If route does not exist we return -ENOENT.
- */
-static int ipddp_delete(struct ipddp_route *rt)
-{
- struct ipddp_route **r = &ipddp_route_list;
- struct ipddp_route *tmp;
-
- spin_lock_bh(&ipddp_route_lock);
- while((tmp = *r) != NULL)
- {
- if(tmp->ip == rt->ip &&
- tmp->at.s_net == rt->at.s_net &&
- tmp->at.s_node == rt->at.s_node)
- {
- *r = tmp->next;
- spin_unlock_bh(&ipddp_route_lock);
- kfree(tmp);
- return 0;
- }
- r = &tmp->next;
- }
-
- 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);
diff --git a/drivers/net/appletalk/ipddp.h b/drivers/net/appletalk/ipddp.h
deleted file mode 100644
index 9a8e45a469259..0000000000000
--- a/drivers/net/appletalk/ipddp.h
+++ /dev/null
@@ -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 */
diff --git a/net/Kconfig b/net/Kconfig
index d532ec33f1fed..e248236c29a73 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -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"
diff --git a/net/appletalk/Kconfig b/net/appletalk/Kconfig
new file mode 100644
index 0000000000000..041141abf925b
--- /dev/null
+++ b/net/appletalk/Kconfig
@@ -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.
--
2.39.2
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