net: remove unused ATM protocols and legacy ATM device drivers

Remove the ATM protocol modules and PCI/SBUS ATM device drivers
that are no longer in active use.

The ATM core protocol stack, PPPoATM, BR2684, and USB DSL modem
drivers (drivers/usb/atm/) are retained in-tree to maintain PPP
over ATM (PPPoA) and PPPoE-over-BR2684 support for DSL connections.
The Solos ADSL2+ PCI driver is also retained.

Removed ATM protocol modules:
 - net/atm/clip.c - Classical IP over ATM (RFC 2225)
 - net/atm/lec.c - LAN Emulation Client (LANE)
 - net/atm/mpc.c, mpoa_caches.c, mpoa_proc.c - Multi-Protocol Over ATM

Removed PCI/SBUS ATM device drivers (drivers/atm/):
 - adummy, atmtcp - software/testing ATM devices
 - eni - Efficient Networks ENI155P (OC-3, ~1995)
 - fore200e - FORE Systems 200E PCI/SBUS (OC-3, ~1999)
 - he - ForeRunner HE (OC-3/OC-12, ~2000)
 - idt77105 - IDT 77105 25 Mbps ATM PHY
 - idt77252 - IDT 77252 NICStAR II (OC-3, ~2000)
 - iphase - Interphase ATM PCI (OC-3/DS3/E3)
 - lanai - Efficient Networks Speedstream 3010
 - nicstar - IDT 77201 NICStAR (155/25 Mbps, ~1999)
 - suni - PMC S/UNI SONET PHY library

Also clean up references in:
 - net/bridge/ - remove ATM LANE hook (br_fdb_test_addr_hook,
   br_fdb_test_addr)
 - net/core/dev.c - remove br_fdb_test_addr_hook export
 - defconfig files - remove ATM driver config options

The removed code is moved to an out-of-tree module package (mod-orphan).

Acked-by: Andy Shevchenko <andriy.shevchenko@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Link: https://patch.msgid.link/20260422041846.2035118-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

1 files changed, 0 insertions, 53 deletions

diff --git a/include/net/atmclip.h b/include/net/atmclip.h
deleted file mode 100644
index 70e350e0db3d..000000000000
--- a/include/net/atmclip.h
+++ /dev/null
@@ -1,53 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/* net/atm/atmarp.h - RFC1577 ATM ARP */
- 
-/* Written 1995-2000 by Werner Almesberger, EPFL LRC/ICA */
- 
- 
-#ifndef _ATMCLIP_H
-#define _ATMCLIP_H
-
-#include <linux/netdevice.h>
-#include <linux/atm.h>
-#include <linux/atmdev.h>
-#include <linux/atmarp.h>
-#include <linux/spinlock.h>
-#include <net/neighbour.h>
-
-
-#define CLIP_VCC(vcc) ((struct clip_vcc *) ((vcc)->user_back))
-
-struct sk_buff;
-
-struct clip_vcc {
-	struct atm_vcc	*vcc;		/* VCC descriptor */
-	struct atmarp_entry *entry;	/* ATMARP table entry, NULL if IP addr.
-					   isn't known yet */
-	int		xoff;		/* 1 if send buffer is full */
-	unsigned char	encap;		/* 0: NULL, 1: LLC/SNAP */
-	unsigned long	last_use;	/* last send or receive operation */
-	unsigned long	idle_timeout;	/* keep open idle for so many jiffies*/
-	void (*old_push)(struct atm_vcc *vcc,struct sk_buff *skb);
-					/* keep old push fn for chaining */
-	void (*old_pop)(struct atm_vcc *vcc,struct sk_buff *skb);
-					/* keep old pop fn for chaining */
-	struct clip_vcc	*next;		/* next VCC */
-};
-
-
-struct atmarp_entry {
-	struct clip_vcc	*vccs;		/* active VCCs; NULL if resolution is
-					   pending */
-	unsigned long	expires;	/* entry expiration time */
-	struct neighbour *neigh;	/* neighbour back-pointer */
-};
-
-#define PRIV(dev) ((struct clip_priv *) netdev_priv(dev))
-
-struct clip_priv {
-	int number;			/* for convenience ... */
-	spinlock_t xoff_lock;		/* ensures that pop is atomic (SMP) */
-	struct net_device *next;	/* next CLIP interface */
-};
-
-#endif