net: wan: Delete the DLCI / SDLA drivers

The DLCI driver (dlci.c) implements the Frame Relay protocol. However,
we already have another newer and better implementation of Frame Relay
provided by the HDLC_FR driver (hdlc_fr.c).

The DLCI driver's implementation of Frame Relay is used by only one
hardware driver in the kernel - the SDLA driver (sdla.c).

The SDLA driver provides Frame Relay support for the Sangoma S50x devices.
However, the vendor provides their own driver (along with their own
multi-WAN-protocol implementations including Frame Relay), called WANPIPE.
I believe most users of the hardware would use the vendor-provided WANPIPE
driver instead.

(The WANPIPE driver was even once in the kernel, but was deleted in
commit 8db60bcf3021 ("[WAN]: Remove broken and unmaintained Sangoma
drivers.") because the vendor no longer updated the in-kernel WANPIPE
driver.)

Cc: Mike McLagan <mike.mclagan@linux.org>
Signed-off-by: Xie He <xie.he.0141@gmail.com>
Link: https://lore.kernel.org/r/20201114150921.685594-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

15 files changed, 0 insertions, 2902 deletions

diff --git a/CREDITS b/CREDITS
index 8592e45e3932..67421adb747c 100644
--- a/CREDITS
+++ b/CREDITS
@@ -2499,15 +2499,6 @@ W: http://www.rdrop.com/users/paulmck/
 D: RCU and variants
 D: rcutorture module
 
-N: Mike McLagan
-E: mike.mclagan@linux.org
-W: http://www.invlogic.com/~mmclagan
-D: DLCI/FRAD drivers for Sangoma SDLAs
-S: Innovative Logic Corp
-S: Post Office Box 1068
-S: Laurel, Maryland 20732
-S: USA
-
 N: Bradley McLean
 E: brad@bradpc.gaylord.com
 D: Device driver hacker
diff --git a/Documentation/networking/framerelay.rst b/Documentation/networking/framerelay.rst
deleted file mode 100644
index 6d904399ec6d..000000000000
--- a/Documentation/networking/framerelay.rst
+++ /dev/null
@@ -1,44 +0,0 @@
-.. SPDX-License-Identifier: GPL-2.0
-
-================
-Frame Relay (FR)
-================
-
-Frame Relay (FR) support for linux is built into a two tiered system of device
-drivers.  The upper layer implements RFC1490 FR specification, and uses the
-Data Link Connection Identifier (DLCI) as its hardware address.  Usually these
-are assigned by your network supplier, they give you the number/numbers of
-the Virtual Connections (VC) assigned to you.
-
-Each DLCI is a point-to-point link between your machine and a remote one.
-As such, a separate device is needed to accommodate the routing.  Within the
-net-tools archives is 'dlcicfg'.  This program will communicate with the
-base "DLCI" device, and create new net devices named 'dlci00', 'dlci01'...
-The configuration script will ask you how many DLCIs you need, as well as
-how many DLCIs you want to assign to each Frame Relay Access Device (FRAD).
-
-The DLCI uses a number of function calls to communicate with the FRAD, all
-of which are stored in the FRAD's private data area.  assoc/deassoc,
-activate/deactivate and dlci_config.  The DLCI supplies a receive function
-to the FRAD to accept incoming packets.
-
-With this initial offering, only 1 FRAD driver is available.  With many thanks
-to Sangoma Technologies, David Mandelstam & Gene Kozin, the S502A, S502E &
-S508 are supported.  This driver is currently set up for only FR, but as
-Sangoma makes more firmware modules available, it can be updated to provide
-them as well.
-
-Configuration of the FRAD makes use of another net-tools program, 'fradcfg'.
-This program makes use of a configuration file (which dlcicfg can also read)
-to specify the types of boards to be configured as FRADs, as well as perform
-any board specific configuration.  The Sangoma module of fradcfg loads the
-FR firmware into the card, sets the irq/port/memory information, and provides
-an initial configuration.
-
-Additional FRAD device drivers can be added as hardware is available.
-
-At this time, the dlcicfg and fradcfg programs have not been incorporated into
-the net-tools distribution.  They can be found at ftp.invlogic.com, in
-/pub/linux.  Note that with OS/2 FTPD, you end up in /pub by default, so just
-use 'cd linux'.  v0.10 is for use on pre-2.0.3 and earlier, v0.15 is for
-pre-2.0.4 and later.
diff --git a/MAINTAINERS b/MAINTAINERS
index af9f6a3ab100..3341959af0c7 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -6905,12 +6905,6 @@ S:	Maintained
 W:	http://floatingpoint.sourceforge.net/emulator/index.html
 F:	arch/x86/math-emu/
 
-FRAME RELAY DLCI/FRAD (Sangoma drivers too)
-L:	netdev@vger.kernel.org
-S:	Orphan
-F:	drivers/net/wan/dlci.c
-F:	drivers/net/wan/sdla.c
-
 FRAMEBUFFER LAYER
 M:	Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
 L:	dri-devel@lists.freedesktop.org
diff --git a/arch/arm/configs/ixp4xx_defconfig b/arch/arm/configs/ixp4xx_defconfig
index 27e7c0714b96..0d6edeb27659 100644
--- a/arch/arm/configs/ixp4xx_defconfig
+++ b/arch/arm/configs/ixp4xx_defconfig
@@ -141,7 +141,6 @@ CONFIG_HDLC_CISCO=m
 CONFIG_HDLC_FR=m
 CONFIG_HDLC_PPP=m
 CONFIG_HDLC_X25=m
-CONFIG_DLCI=m
 CONFIG_WAN_ROUTER_DRIVERS=m
 CONFIG_ATM_TCP=m
 # CONFIG_INPUT_KEYBOARD is not set
diff --git a/arch/mips/configs/gpr_defconfig b/arch/mips/configs/gpr_defconfig
index 599d5604aabe..8a921c8ac233 100644
--- a/arch/mips/configs/gpr_defconfig
+++ b/arch/mips/configs/gpr_defconfig
@@ -228,7 +228,6 @@ CONFIG_FARSYNC=m
 CONFIG_DSCC4=m
 CONFIG_DSCC4_PCISYNC=y
 CONFIG_DSCC4_PCI_RST=y
-CONFIG_DLCI=m
 CONFIG_LAPBETHER=m
 # CONFIG_INPUT_KEYBOARD is not set
 # CONFIG_INPUT_MOUSE is not set
diff --git a/arch/mips/configs/mtx1_defconfig b/arch/mips/configs/mtx1_defconfig
index dc69b054181c..30dacce94198 100644
--- a/arch/mips/configs/mtx1_defconfig
+++ b/arch/mips/configs/mtx1_defconfig
@@ -378,7 +378,6 @@ CONFIG_FARSYNC=m
 CONFIG_DSCC4=m
 CONFIG_DSCC4_PCISYNC=y
 CONFIG_DSCC4_PCI_RST=y
-CONFIG_DLCI=m
 CONFIG_LAPBETHER=m
 # CONFIG_KEYBOARD_ATKBD is not set
 CONFIG_KEYBOARD_GPIO=y
diff --git a/drivers/net/wan/Kconfig b/drivers/net/wan/Kconfig
index 2cf98a732a26..4029fde71a9e 100644
--- a/drivers/net/wan/Kconfig
+++ b/drivers/net/wan/Kconfig
@@ -321,51 +321,6 @@ config IXP4XX_HSS
 	  Say Y here if you want to use built-in HSS ports
 	  on IXP4xx processor.
 
-config DLCI
-	tristate "Frame Relay DLCI support"
-	help
-	  Support for the Frame Relay protocol.
-
-	  Frame Relay is a fast low-cost way to connect to a remote Internet
-	  access provider or to form a private wide area network. The one
-	  physical line from your box to the local "switch" (i.e. the entry
-	  point to the Frame Relay network, usually at the phone company) can
-	  carry several logical point-to-point connections to other computers
-	  connected to the Frame Relay network. For a general explanation of
-	  the protocol, check out <http://www.mplsforum.org/>.
-
-	  To use frame relay, you need supporting hardware (called FRAD) and
-	  certain programs from the net-tools package as explained in
-	  <file:Documentation/networking/framerelay.rst>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called dlci.
-
-config DLCI_MAX
-	int "Max DLCI per device"
-	depends on DLCI
-	default "8"
-	help
-	  How many logical point-to-point frame relay connections (the
-	  identifiers of which are called DCLIs) should be handled by each
-	  of your hardware frame relay access devices.
-
-	  Go with the default.
-
-config SDLA
-	tristate "SDLA (Sangoma S502/S508) support"
-	depends on DLCI && ISA
-	help
-	  Driver for the Sangoma S502A, S502E, and S508 Frame Relay Access
-	  Devices.
-
-	  These are multi-protocol cards, but only Frame Relay is supported
-	  by the driver at this time. Please read
-	  <file:Documentation/networking/framerelay.rst>.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called sdla.
-
 # X.25 network drivers
 config LAPBETHER
 	tristate "LAPB over Ethernet driver"
diff --git a/drivers/net/wan/Makefile b/drivers/net/wan/Makefile
index 5b9dc85eae34..081666c36ca2 100644
--- a/drivers/net/wan/Makefile
+++ b/drivers/net/wan/Makefile
@@ -21,8 +21,6 @@ obj-$(CONFIG_FARSYNC)		+= farsync.o
 
 obj-$(CONFIG_LANMEDIA)		+= lmc/
 
-obj-$(CONFIG_DLCI)		+= dlci.o 
-obj-$(CONFIG_SDLA)		+= sdla.o
 obj-$(CONFIG_LAPBETHER)		+= lapbether.o
 obj-$(CONFIG_SBNI)		+= sbni.o
 obj-$(CONFIG_N2)		+= n2.o
diff --git a/drivers/net/wan/dlci.c b/drivers/net/wan/dlci.c
deleted file mode 100644
index 3ca4daf63389..000000000000
--- a/drivers/net/wan/dlci.c
+++ /dev/null
@@ -1,541 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * DLCI		Implementation of Frame Relay protocol for Linux, according to
- *		RFC 1490.  This generic device provides en/decapsulation for an
- *		underlying hardware driver.  Routes & IPs are assigned to these
- *		interfaces.  Requires 'dlcicfg' program to create usable 
- *		interfaces, the initial one, 'dlci' is for IOCTL use only.
- *
- * Version:	@(#)dlci.c	0.35	4 Jan 1997
- *
- * Author:	Mike McLagan <mike.mclagan@linux.org>
- *
- * Changes:
- *
- *		0.15	Mike Mclagan	Packet freeing, bug in kmalloc call
- *					DLCI_RET handling
- *		0.20	Mike McLagan	More conservative on which packets
- *					are returned for retry and which are
- *					are dropped.  If DLCI_RET_DROP is
- *					returned from the FRAD, the packet is
- *				 	sent back to Linux for re-transmission
- *		0.25	Mike McLagan	Converted to use SIOC IOCTL calls
- *		0.30	Jim Freeman	Fixed to allow IPX traffic
- *		0.35	Michael Elizabeth	Fixed incorrect memcpy_fromfs
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/init.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/errno.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/if_frad.h>
-#include <linux/bitops.h>
-
-#include <net/sock.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <linux/uaccess.h>
-
-static const char version[] = "DLCI driver v0.35, 4 Jan 1997, mike.mclagan@linux.org";
-
-static LIST_HEAD(dlci_devs);
-
-static void dlci_setup(struct net_device *);
-
-/* 
- * these encapsulate the RFC 1490 requirements as well as 
- * deal with packet transmission and reception, working with
- * the upper network layers 
- */
-
-static int dlci_header(struct sk_buff *skb, struct net_device *dev, 
-		       unsigned short type, const void *daddr,
-		       const void *saddr, unsigned len)
-{
-	struct frhdr		hdr;
-	unsigned int		hlen;
-	char			*dest;
-
-	hdr.control = FRAD_I_UI;
-	switch (type)
-	{
-		case ETH_P_IP:
-			hdr.IP_NLPID = FRAD_P_IP;
-			hlen = sizeof(hdr.control) + sizeof(hdr.IP_NLPID);
-			break;
-
-		/* feel free to add other types, if necessary */
-
-		default:
-			hdr.pad = FRAD_P_PADDING;
-			hdr.NLPID = FRAD_P_SNAP;
-			memset(hdr.OUI, 0, sizeof(hdr.OUI));
-			hdr.PID = htons(type);
-			hlen = sizeof(hdr);
-			break;
-	}
-
-	dest = skb_push(skb, hlen);
-	if (!dest)
-		return 0;
-
-	memcpy(dest, &hdr, hlen);
-
-	return hlen;
-}
-
-static void dlci_receive(struct sk_buff *skb, struct net_device *dev)
-{
-	struct frhdr		*hdr;
-	int					process, header;
-
-	if (!pskb_may_pull(skb, sizeof(*hdr))) {
-		netdev_notice(dev, "invalid data no header\n");
-		dev->stats.rx_errors++;
-		kfree_skb(skb);
-		return;
-	}
-
-	hdr = (struct frhdr *) skb->data;
-	process = 0;
-	header = 0;
-	skb->dev = dev;
-
-	if (hdr->control != FRAD_I_UI)
-	{
-		netdev_notice(dev, "Invalid header flag 0x%02X\n",
-			      hdr->control);
-		dev->stats.rx_errors++;
-	}
-	else
-		switch (hdr->IP_NLPID)
-		{
-			case FRAD_P_PADDING:
-				if (hdr->NLPID != FRAD_P_SNAP)
-				{
-					netdev_notice(dev, "Unsupported NLPID 0x%02X\n",
-						      hdr->NLPID);
-					dev->stats.rx_errors++;
-					break;
-				}
-	 
-				if (hdr->OUI[0] + hdr->OUI[1] + hdr->OUI[2] != 0)
-				{
-					netdev_notice(dev, "Unsupported organizationally unique identifier 0x%02X-%02X-%02X\n",
-						      hdr->OUI[0],
-						      hdr->OUI[1],
-						      hdr->OUI[2]);
-					dev->stats.rx_errors++;
-					break;
-				}
-
-				/* at this point, it's an EtherType frame */
-				header = sizeof(struct frhdr);
-				/* Already in network order ! */
-				skb->protocol = hdr->PID;
-				process = 1;
-				break;
-
-			case FRAD_P_IP:
-				header = sizeof(hdr->control) + sizeof(hdr->IP_NLPID);
-				skb->protocol = htons(ETH_P_IP);
-				process = 1;
-				break;
-
-			case FRAD_P_SNAP:
-			case FRAD_P_Q933:
-			case FRAD_P_CLNP:
-				netdev_notice(dev, "Unsupported NLPID 0x%02X\n",
-					      hdr->pad);
-				dev->stats.rx_errors++;
-				break;
-
-			default:
-				netdev_notice(dev, "Invalid pad byte 0x%02X\n",
-					      hdr->pad);
-				dev->stats.rx_errors++;
-				break;				
-		}
-
-	if (process)
-	{
-		/* we've set up the protocol, so discard the header */
-		skb_reset_mac_header(skb);
-		skb_pull(skb, header);
-		dev->stats.rx_bytes += skb->len;
-		netif_rx(skb);
-		dev->stats.rx_packets++;
-	}
-	else
-		dev_kfree_skb(skb);
-}
-
-static netdev_tx_t dlci_transmit(struct sk_buff *skb, struct net_device *dev)
-{
-	struct dlci_local *dlp = netdev_priv(dev);
-
-	if (skb) {
-		struct netdev_queue *txq = skb_get_tx_queue(dev, skb);
-		netdev_start_xmit(skb, dlp->slave, txq, false);
-	}
-	return NETDEV_TX_OK;
-}
-
-static int dlci_config(struct net_device *dev, struct dlci_conf __user *conf, int get)
-{
-	struct dlci_conf	config;
-	struct dlci_local	*dlp;
-	struct frad_local	*flp;
-	int			err;
-
-	dlp = netdev_priv(dev);
-
-	flp = netdev_priv(dlp->slave);
-
-	if (!get)
-	{
-		if (copy_from_user(&config, conf, sizeof(struct dlci_conf)))
-			return -EFAULT;
-		if (config.flags & ~DLCI_VALID_FLAGS)
-			return -EINVAL;
-		memcpy(&dlp->config, &config, sizeof(struct dlci_conf));
-		dlp->configured = 1;
-	}
-
-	err = (*flp->dlci_conf)(dlp->slave, dev, get);
-	if (err)
-		return err;
-
-	if (get)
-	{
-		if (copy_to_user(conf, &dlp->config, sizeof(struct dlci_conf)))
-			return -EFAULT;
-	}
-
-	return 0;
-}
-
-static int dlci_dev_ioctl(struct net_device *dev, struct ifreq *ifr, int cmd)
-{
-	struct dlci_local *dlp;
-
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	dlp = netdev_priv(dev);
-
-	switch (cmd)
-	{
-		case DLCI_GET_SLAVE:
-			if (!*(short *)(dev->dev_addr))
-				return -EINVAL;
-
-			strncpy(ifr->ifr_slave, dlp->slave->name, sizeof(ifr->ifr_slave));
-			break;
-
-		case DLCI_GET_CONF:
-		case DLCI_SET_CONF:
-			if (!*(short *)(dev->dev_addr))
-				return -EINVAL;
-
-			return dlci_config(dev, ifr->ifr_data, cmd == DLCI_GET_CONF);
-
-		default: 
-			return -EOPNOTSUPP;
-	}
-	return 0;
-}
-
-static int dlci_change_mtu(struct net_device *dev, int new_mtu)
-{
-	struct dlci_local *dlp = netdev_priv(dev);
-
-	return dev_set_mtu(dlp->slave, new_mtu);
-}
-
-static int dlci_open(struct net_device *dev)
-{
-	struct dlci_local	*dlp;
-	struct frad_local	*flp;
-	int			err;
-
-	dlp = netdev_priv(dev);
-
-	if (!*(short *)(dev->dev_addr))
-		return -EINVAL;
-
-	if (!netif_running(dlp->slave))
-		return -ENOTCONN;
-
-	flp = netdev_priv(dlp->slave);
-	err = (*flp->activate)(dlp->slave, dev);
-	if (err)
-		return err;
-
-	netif_start_queue(dev);
-
-	return 0;
-}
-
-static int dlci_close(struct net_device *dev)
-{
-	struct dlci_local	*dlp;
-	struct frad_local	*flp;
-
-	netif_stop_queue(dev);
-
-	dlp = netdev_priv(dev);
-
-	flp = netdev_priv(dlp->slave);
-	(*flp->deactivate)(dlp->slave, dev);
-
-	return 0;
-}
-
-static int dlci_add(struct dlci_add *dlci)
-{
-	struct net_device	*master, *slave;
-	struct dlci_local	*dlp;
-	struct frad_local	*flp;
-	int			err = -EINVAL;
-
-
-	/* validate slave device */
-	slave = dev_get_by_name(&init_net, dlci->devname);
-	if (!slave)
-		return -ENODEV;
-
-	if (slave->type != ARPHRD_FRAD || netdev_priv(slave) == NULL)
-		goto err1;
-
-	/* create device name */
-	master = alloc_netdev(sizeof(struct dlci_local), "dlci%d",
-			      NET_NAME_UNKNOWN, dlci_setup);
-	if (!master) {
-		err = -ENOMEM;
-		goto err1;
-	}
-
-	/* make sure same slave not already registered */
-	rtnl_lock();
-	list_for_each_entry(dlp, &dlci_devs, list) {
-		if (dlp->slave == slave) {
-			err = -EBUSY;
-			goto err2;
-		}
-	}
-
-	*(short *)(master->dev_addr) = dlci->dlci;
-
-	dlp = netdev_priv(master);
-	dlp->slave = slave;
-	dlp->master = master;
-
-	flp = netdev_priv(slave);
-	err = (*flp->assoc)(slave, master);
-	if (err < 0)
-		goto err2;
-
-	err = register_netdevice(master);
-	if (err < 0) 
-		goto err2;
-
-	strcpy(dlci->devname, master->name);
-
-	list_add(&dlp->list, &dlci_devs);
-	rtnl_unlock();
-
-	return 0;
-
- err2:
-	rtnl_unlock();
-	free_netdev(master);
- err1:
-	dev_put(slave);
-	return err;
-}
-
-static int dlci_del(struct dlci_add *dlci)
-{
-	struct dlci_local	*dlp;
-	struct frad_local	*flp;
-	struct net_device	*master, *slave;
-	int			err;
-	bool			found = false;
-
-	rtnl_lock();
-
-	/* validate slave device */
-	master = __dev_get_by_name(&init_net, dlci->devname);
-	if (!master) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	list_for_each_entry(dlp, &dlci_devs, list) {
-		if (dlp->master == master) {
-			found = true;
-			break;
-		}
-	}
-	if (!found) {
-		err = -ENODEV;
-		goto out;
-	}
-
-	if (netif_running(master)) {
-		err = -EBUSY;
-		goto out;
-	}
-
-	dlp = netdev_priv(master);
-	slave = dlp->slave;
-	flp = netdev_priv(slave);
-
-	err = (*flp->deassoc)(slave, master);
-	if (!err) {
-		list_del(&dlp->list);
-
-		unregister_netdevice(master);
-
-		dev_put(slave);
-	}
-out:
-	rtnl_unlock();
-	return err;
-}
-
-static int dlci_ioctl(unsigned int cmd, void __user *arg)
-{
-	struct dlci_add add;
-	int err;
-	
-	if (!capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	if (copy_from_user(&add, arg, sizeof(struct dlci_add)))
-		return -EFAULT;
-
-	switch (cmd)
-	{
-		case SIOCADDDLCI:
-			err = dlci_add(&add);
-
-			if (!err)
-				if (copy_to_user(arg, &add, sizeof(struct dlci_add)))
-					return -EFAULT;
-			break;
-
-		case SIOCDELDLCI:
-			err = dlci_del(&add);
-			break;
-
-		default:
-			err = -EINVAL;
-	}
-
-	return err;
-}
-
-static const struct header_ops dlci_header_ops = {
-	.create	= dlci_header,
-};
-
-static const struct net_device_ops dlci_netdev_ops = {
-	.ndo_open	= dlci_open,
-	.ndo_stop	= dlci_close,
-	.ndo_do_ioctl	= dlci_dev_ioctl,
-	.ndo_start_xmit	= dlci_transmit,
-	.ndo_change_mtu	= dlci_change_mtu,
-};
-
-static void dlci_setup(struct net_device *dev)
-{
-	struct dlci_local *dlp = netdev_priv(dev);
-
-	dev->flags		= 0;
-	dev->header_ops		= &dlci_header_ops;
-	dev->netdev_ops		= &dlci_netdev_ops;
-	dev->needs_free_netdev	= true;
-
-	dlp->receive		= dlci_receive;
-
-	dev->type		= ARPHRD_DLCI;
-	dev->hard_header_len	= sizeof(struct frhdr);
-	dev->addr_len		= sizeof(short);
-
-}
-
-/* if slave is unregistering, then cleanup master */
-static int dlci_dev_event(struct notifier_block *unused,
-			  unsigned long event, void *ptr)
-{
-	struct net_device *dev = netdev_notifier_info_to_dev(ptr);
-
-	if (dev_net(dev) != &init_net)
-		return NOTIFY_DONE;
-
-	if (event == NETDEV_UNREGISTER) {
-		struct dlci_local *dlp;
-
-		list_for_each_entry(dlp, &dlci_devs, list) {
-			if (dlp->slave == dev) {
-				list_del(&dlp->list);
-				unregister_netdevice(dlp->master);
-				dev_put(dlp->slave);
-				break;
-			}
-		}
-	}
-	return NOTIFY_DONE;
-}
-
-static struct notifier_block dlci_notifier = {
-	.notifier_call = dlci_dev_event,
-};
-
-static int __init init_dlci(void)
-{
-	dlci_ioctl_set(dlci_ioctl);
-	register_netdevice_notifier(&dlci_notifier);
-
-	printk("%s.\n", version);
-
-	return 0;
-}
-
-static void __exit dlci_exit(void)
-{
-	struct dlci_local	*dlp, *nxt;
-	
-	dlci_ioctl_set(NULL);
-	unregister_netdevice_notifier(&dlci_notifier);
-
-	rtnl_lock();
-	list_for_each_entry_safe(dlp, nxt, &dlci_devs, list) {
-		unregister_netdevice(dlp->master);
-		dev_put(dlp->slave);
-	}
-	rtnl_unlock();
-}
-
-module_init(init_dlci);
-module_exit(dlci_exit);
-
-MODULE_AUTHOR("Mike McLagan");
-MODULE_DESCRIPTION("Frame Relay DLCI layer");
-MODULE_LICENSE("GPL");
diff --git a/drivers/net/wan/sdla.c b/drivers/net/wan/sdla.c
deleted file mode 100644
index bc2c1c7fb1a4..000000000000
--- a/drivers/net/wan/sdla.c
+++ /dev/null
@@ -1,1655 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * SDLA		An implementation of a driver for the Sangoma S502/S508 series
- *		multi-protocol PC interface card.  Initial offering is with 
- *		the DLCI driver, providing Frame Relay support for linux.
- *
- *		Global definitions for the Frame relay interface.
- *
- * Version:	@(#)sdla.c   0.30	12 Sep 1996
- *
- * Credits:	Sangoma Technologies, for the use of 2 cards for an extended
- *			period of time.
- *		David Mandelstam <dm@sangoma.com> for getting me started on 
- *			this project, and incentive to complete it.
- *		Gene Kozen <74604.152@compuserve.com> for providing me with
- *			important information about the cards.
- *
- * Author:	Mike McLagan <mike.mclagan@linux.org>
- *
- * Changes:
- *		0.15	Mike McLagan	Improved error handling, packet dropping
- *		0.20	Mike McLagan	New transmit/receive flags for config
- *					If in FR mode, don't accept packets from
- *					non DLCI devices.
- *		0.25	Mike McLagan	Fixed problem with rejecting packets
- *					from non DLCI devices.
- *		0.30	Mike McLagan	Fixed kernel panic when used with modified
- *					ifconfig
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/types.h>
-#include <linux/fcntl.h>
-#include <linux/interrupt.h>
-#include <linux/ptrace.h>
-#include <linux/ioport.h>
-#include <linux/in.h>
-#include <linux/slab.h>
-#include <linux/string.h>
-#include <linux/timer.h>
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/netdevice.h>
-#include <linux/skbuff.h>
-#include <linux/if_arp.h>
-#include <linux/if_frad.h>
-#include <linux/sdla.h>
-#include <linux/bitops.h>
-
-#include <asm/io.h>
-#include <asm/dma.h>
-#include <linux/uaccess.h>
-
-static const char* version = "SDLA driver v0.30, 12 Sep 1996, mike.mclagan@linux.org";
-
-static unsigned int valid_port[] = { 0x250, 0x270, 0x280, 0x300, 0x350, 0x360, 0x380, 0x390};
-
-static unsigned int valid_mem[] = {
-				    0xA0000, 0xA2000, 0xA4000, 0xA6000, 0xA8000, 0xAA000, 0xAC000, 0xAE000, 
-                                    0xB0000, 0xB2000, 0xB4000, 0xB6000, 0xB8000, 0xBA000, 0xBC000, 0xBE000,
-                                    0xC0000, 0xC2000, 0xC4000, 0xC6000, 0xC8000, 0xCA000, 0xCC000, 0xCE000,
-                                    0xD0000, 0xD2000, 0xD4000, 0xD6000, 0xD8000, 0xDA000, 0xDC000, 0xDE000,
-                                    0xE0000, 0xE2000, 0xE4000, 0xE6000, 0xE8000, 0xEA000, 0xEC000, 0xEE000}; 
-
-static DEFINE_SPINLOCK(sdla_lock);
-
-/*********************************************************
- *
- * these are the core routines that access the card itself 
- *
- *********************************************************/
-
-#define SDLA_WINDOW(dev,addr) outb((((addr) >> 13) & 0x1F), (dev)->base_addr + SDLA_REG_Z80_WINDOW)
-
-static void __sdla_read(struct net_device *dev, int addr, void *buf, short len)
-{
-	char          *temp;
-	const void    *base;
-	int           offset, bytes;
-
-	temp = buf;
-	while(len)
-	{	
-		offset = addr & SDLA_ADDR_MASK;
-		bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
-		base = (const void *) (dev->mem_start + offset);
-
-		SDLA_WINDOW(dev, addr);
-		memcpy(temp, base, bytes);
-
-		addr += bytes;
-		temp += bytes;
-		len  -= bytes;
-	}  
-}
-
-static void sdla_read(struct net_device *dev, int addr, void *buf, short len)
-{
-	unsigned long flags;
-	spin_lock_irqsave(&sdla_lock, flags);
-	__sdla_read(dev, addr, buf, len);
-	spin_unlock_irqrestore(&sdla_lock, flags);
-}
-
-static void __sdla_write(struct net_device *dev, int addr, 
-			 const void *buf, short len)
-{
-	const char    *temp;
-	void 	      *base;
-	int           offset, bytes;
-
-	temp = buf;
-	while(len)
-	{
-		offset = addr & SDLA_ADDR_MASK;
-		bytes = offset + len > SDLA_WINDOW_SIZE ? SDLA_WINDOW_SIZE - offset : len;
-		base = (void *) (dev->mem_start + offset);
-
-		SDLA_WINDOW(dev, addr);
-		memcpy(base, temp, bytes);
-
-		addr += bytes;
-		temp += bytes;
-		len  -= bytes;
-	}
-}
-
-static void sdla_write(struct net_device *dev, int addr, 
-		       const void *buf, short len)
-{
-	unsigned long flags;
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	__sdla_write(dev, addr, buf, len);
-	spin_unlock_irqrestore(&sdla_lock, flags);
-}
-
-
-static void sdla_clear(struct net_device *dev)
-{
-	unsigned long flags;
-	char          *base;
-	int           len, addr, bytes;
-
-	len = 65536;	
-	addr = 0;
-	bytes = SDLA_WINDOW_SIZE;
-	base = (void *) dev->mem_start;
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	while(len)
-	{
-		SDLA_WINDOW(dev, addr);
-		memset(base, 0, bytes);
-
-		addr += bytes;
-		len  -= bytes;
-	}
-	spin_unlock_irqrestore(&sdla_lock, flags);
-
-}
-
-static char sdla_byte(struct net_device *dev, int addr)
-{
-	unsigned long flags;
-	char          byte, *temp;
-
-	temp = (void *) (dev->mem_start + (addr & SDLA_ADDR_MASK));
-
-	spin_lock_irqsave(&sdla_lock, flags);
-	SDLA_WINDOW(dev, addr);
-	byte = *temp;
-	spin_unlock_irqrestore(&sdla_lock, flags);
-
-	return byte;
-}
-
-static void sdla_stop(struct net_device *dev)
-{
-	struct frad_local *flp;
-
-	flp = netdev_priv(dev);
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			outb(SDLA_S502A_HALT, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_HALT;
-			break;
-		case SDLA_S502E:
-			outb(SDLA_HALT, dev->base_addr + SDLA_REG_Z80_CONTROL);
-			outb(SDLA_S502E_ENABLE, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_S502E_ENABLE;
-			break;
-		case SDLA_S507:
-			flp->state &= ~SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-		case SDLA_S508:
-			flp->state &= ~SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-	}
-}
-
-static void sdla_start(struct net_device *dev)
-{
-	struct frad_local *flp;
-
-	flp = netdev_priv(dev);
-	switch(flp->type)
-	{
-		case SDLA_S502A:
-			outb(SDLA_S502A_NMI, dev->base_addr + SDLA_REG_CONTROL);
-			outb(SDLA_S502A_START, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = SDLA_S502A_START;
-			break;
-		case SDLA_S502E:
-			outb(SDLA_S502E_CPUEN, dev->base_addr + SDLA_REG_Z80_CONTROL);
-			outb(0x00, dev->base_addr + SDLA_REG_CONTROL);
-			flp->state = 0;
-			break;
-		case SDLA_S507:
-			flp->state |= SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-		case SDLA_S508:
-			flp->state |= SDLA_CPUEN;
-			outb(flp->state, dev->base_addr + SDLA_REG_CONTROL);
-			break;
-	}
-}
-
-/****************************************************
- *
- * this is used for the S502A/E cards to determine
- * the speed of the onboard CPU.  Calibration is
- * necessary for the Frame Relay code uploaded 
- * later.  Incorrect results cause timing problems
- * with link checks & status messages
- *
- ***************************************************/
-
-static int sdla_z80_poll(struct net_device *dev, int z80_addr, int jiffs, char resp1, char resp2)
-{
-	unsigned long start, done, now;
-	char          resp, *temp;
-
-	start = now = jiffies;
-	done = jiffies + jiffs;
-
-	temp = (void *)dev->mem_start;
-	temp += z80_addr & SDLA_ADDR_MASK;
-	
-	resp = ~resp1;
-	while (time_before(jiffies, done) && (resp != resp1) && (!resp2 || (resp != resp2)))
-	{
-		if (jiffies != now)
-		{
-			SDLA_WINDOW(dev, z80_addr);
-			now = jiffies;
-			resp = *temp;
-		}
-	}
-	return time_before(jiffies, done) ? jiffies - start : -1;
-}
-
-/* constants for Z80 CPU speed */
-#define Z80_READY 		'1'	/* Z80 is ready to begin */
-#define LOADER_READY 		'2'	/* driver is ready to begin */
-#define Z80_SCC_OK 		'3'	/* SCC is on board */
-#define Z80_SCC_BAD	 	'4'	/* SCC was not found */
-
-static int sdla_cpuspeed(struct net_device *dev, struct ifreq *ifr)
-{
-	int  jiffs;
-	char data;
-
-	sdla_start(dev);
-	if (sdla_z80_poll(dev, 0, 3*HZ, Z80_READY, 0) < 0)
-		return -EIO;
-
-	data = LOADER_READY;
-	sdla_write(dev, 0, &data, 1);
-
-	if ((jiffs = sdla_z80_poll(dev, 0, 8*HZ, Z80_SCC_OK, Z80_SCC_BAD)) < 0)
-		return -EIO;
-
-	sdla_stop(dev);
-	sdla_read(dev, 0, &data, 1);
-
-	if (data == Z80_SCC_BAD)
-	{
-		printk("%s: SCC bad\n", dev->name);
-		return -EIO;
-	}
-
-	if (data != Z80_SCC_OK)
-		return -EINVAL;
-
-	if (jiffs < 165)
-		ifr->ifr_mtu = SDLA_CPU_16M;
-	else if (jiffs < 220)
-		ifr->ifr_mtu = SDLA_CPU_10M;
-	else if (jiffs < 258)
-		ifr->ifr_mtu = SDLA_CPU_8M;
-	else if (jiffs < 357)
-		ifr->ifr_mtu = SDLA_CPU_7M;
-	else if (jiffs < 467)
-		ifr->ifr_mtu = SDLA_CPU_5M;
-	else
-		ifr->ifr_mtu = SDLA_CPU_3M;
- 
-	return 0;
-}
-
-/************************************************
-