net: remove ax25 and amateur radio (hamradio) subsystem

Remove the amateur radio (AX.25, NET/ROM, ROSE) protocol implementation
and all associated hamradio device drivers from the kernel tree.
This set of protocols has long been a huge bug/syzbot magnet,
and since nobody stepped up to help us deal with the influx
of the AI-generated bug reports we need to move it out of tree
to protect our sanity.

The code is moved to an out-of-tree repo:
https://github.com/linux-netdev/mod-orphan
if it's cleaned up and reworked there we can accept it back.

Minimal stub headers are kept for include/net/ax25.h (AX25_P_IP,
AX25_ADDR_LEN, ax25_address) and include/net/rose.h (ROSE_ADDR_LEN)
so that the conditional integration code in arp.c and tun.c continues
to compile and work when the out-of-tree modules are loaded.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Acked-by: Stephen Hemminger <stephen@networkplumber.org>
Acked-by: Carlos Bilbao <carlos.bilbao@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Reviewed-by: Kuniyuki Iwashima <kuniyu@google.com>
Acked-by: Toke Høiland-Jørgensen <toke@toke.dk>
Link: https://patch.msgid.link/20260421021824.1293976-1-kuba@kernel.org
Signed-off-by: Paolo Abeni <pabeni@redhat.com>

3 files changed, 5 insertions, 1007 deletions

diff --git a/include/net/ax25.h b/include/net/ax25.h
index 9fc6a6657266..6b2f518facdb 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -1,480 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/*
- *	Declarations of AX.25 type objects.
- *
- *	Alan Cox (GW4PTS) 	10/11/93
- */
 #ifndef _AX25_H
-#define _AX25_H 
+#define _AX25_H
 
 #include <linux/ax25.h>
-#include <linux/spinlock.h>
-#include <linux/timer.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <linux/refcount.h>
-#include <net/neighbour.h>
-#include <net/sock.h>
-#include <linux/seq_file.h>
 
-#define	AX25_T1CLAMPLO  		1
-#define	AX25_T1CLAMPHI 			(30 * HZ)
-
-#define	AX25_BPQ_HEADER_LEN		16
-#define	AX25_KISS_HEADER_LEN		1
-
-#define	AX25_HEADER_LEN			17
-#define	AX25_ADDR_LEN			7
-#define	AX25_DIGI_HEADER_LEN		(AX25_MAX_DIGIS * AX25_ADDR_LEN)
-#define	AX25_MAX_HEADER_LEN		(AX25_HEADER_LEN + AX25_DIGI_HEADER_LEN)
-
-/* AX.25 Protocol IDs */
-#define AX25_P_ROSE			0x01
-#define AX25_P_VJCOMP			0x06	/* Compressed TCP/IP packet   */
-						/* Van Jacobsen (RFC 1144)    */
-#define AX25_P_VJUNCOMP			0x07	/* Uncompressed TCP/IP packet */
-						/* Van Jacobsen (RFC 1144)    */
-#define	AX25_P_SEGMENT			0x08	/* Segmentation fragment      */
-#define AX25_P_TEXNET			0xc3	/* TEXTNET datagram protocol  */
-#define AX25_P_LQ			0xc4	/* Link Quality Protocol      */
-#define AX25_P_ATALK			0xca	/* Appletalk                  */
-#define AX25_P_ATALK_ARP		0xcb	/* Appletalk ARP              */
-#define AX25_P_IP			0xcc	/* ARPA Internet Protocol     */
-#define AX25_P_ARP			0xcd	/* ARPA Address Resolution    */
-#define AX25_P_FLEXNET			0xce	/* FlexNet                    */
-#define AX25_P_NETROM 			0xcf	/* NET/ROM                    */
-#define AX25_P_TEXT 			0xF0	/* No layer 3 protocol impl.  */
-
-/* AX.25 Segment control values */
-#define	AX25_SEG_REM			0x7F
-#define	AX25_SEG_FIRST			0x80
-
-#define AX25_CBIT			0x80	/* Command/Response bit */
-#define AX25_EBIT			0x01	/* HDLC Address Extension bit */
-#define AX25_HBIT			0x80	/* Has been repeated bit */
-
-#define AX25_SSSID_SPARE		0x60	/* Unused bits in SSID for standard AX.25 */
-#define AX25_ESSID_SPARE		0x20	/* Unused bits in SSID for extended AX.25 */
-#define AX25_DAMA_FLAG			0x20	/* Well, it is *NOT* unused! (dl1bke 951121 */
-
-#define	AX25_COND_ACK_PENDING		0x01
-#define	AX25_COND_REJECT		0x02
-#define	AX25_COND_PEER_RX_BUSY		0x04
-#define	AX25_COND_OWN_RX_BUSY		0x08
-#define	AX25_COND_DAMA_MODE		0x10
-
-#ifndef _LINUX_NETDEVICE_H
-#include <linux/netdevice.h>
-#endif
-
-/* Upper sub-layer (LAPB) definitions */
-
-/* Control field templates */
-#define	AX25_I			0x00	/* Information frames */
-#define	AX25_S			0x01	/* Supervisory frames */
-#define	AX25_RR			0x01	/* Receiver ready */
-#define	AX25_RNR		0x05	/* Receiver not ready */
-#define	AX25_REJ		0x09	/* Reject */
-#define	AX25_U			0x03	/* Unnumbered frames */
-#define	AX25_SABM		0x2f	/* Set Asynchronous Balanced Mode */
-#define	AX25_SABME		0x6f	/* Set Asynchronous Balanced Mode Extended */
-#define	AX25_DISC		0x43	/* Disconnect */
-#define	AX25_DM			0x0f	/* Disconnected mode */
-#define	AX25_UA			0x63	/* Unnumbered acknowledge */
-#define	AX25_FRMR		0x87	/* Frame reject */
-#define	AX25_UI			0x03	/* Unnumbered information */
-#define	AX25_XID		0xaf	/* Exchange information */
-#define	AX25_TEST		0xe3	/* Test */
-
-#define	AX25_PF			0x10	/* Poll/final bit for standard AX.25 */
-#define	AX25_EPF		0x01	/* Poll/final bit for extended AX.25 */
-
-#define AX25_ILLEGAL		0x100	/* Impossible to be a real frame type */
-
-#define	AX25_POLLOFF		0
-#define	AX25_POLLON		1
-
-/* AX25 L2 C-bit */
-#define AX25_COMMAND		1
-#define AX25_RESPONSE		2
-
-/* Define Link State constants. */
-
-enum { 
-	AX25_STATE_0,			/* Listening */
-	AX25_STATE_1,			/* SABM sent */
-	AX25_STATE_2,			/* DISC sent */
-	AX25_STATE_3,			/* Established */
-	AX25_STATE_4			/* Recovery */
-};
-
-#define AX25_MODULUS 		8	/*  Standard AX.25 modulus */
-#define	AX25_EMODULUS		128	/*  Extended AX.25 modulus */
-
-enum {
-	AX25_PROTO_STD_SIMPLEX,
-	AX25_PROTO_STD_DUPLEX,
-#ifdef CONFIG_AX25_DAMA_SLAVE
-	AX25_PROTO_DAMA_SLAVE,
-#endif
-	__AX25_PROTO_MAX,
-	AX25_PROTO_MAX = __AX25_PROTO_MAX -1
-};
-
-enum {
-	AX25_VALUES_IPDEFMODE,	/* 0=DG 1=VC */
-	AX25_VALUES_AXDEFMODE,	/* 0=Normal 1=Extended Seq Nos */
-	AX25_VALUES_BACKOFF,	/* 0=None 1=Linear 2=Exponential */
-	AX25_VALUES_CONMODE,	/* Allow connected modes - 0=No 1=no "PID text" 2=all PIDs */
-	AX25_VALUES_WINDOW,	/* Default window size for standard AX.25 */
-	AX25_VALUES_EWINDOW,	/* Default window size for extended AX.25 */
-	AX25_VALUES_T1,		/* Default T1 timeout value */
-	AX25_VALUES_T2,		/* Default T2 timeout value */
-	AX25_VALUES_T3,		/* Default T3 timeout value */
-	AX25_VALUES_IDLE,	/* Connected mode idle timer */
-	AX25_VALUES_N2,		/* Default N2 value */
-	AX25_VALUES_PACLEN,	/* AX.25 MTU */
-	AX25_VALUES_PROTOCOL,	/* Std AX.25, DAMA Slave */
-#ifdef CONFIG_AX25_DAMA_SLAVE
-	AX25_VALUES_DS_TIMEOUT,	/* DAMA Slave timeout */
-#endif
-	AX25_MAX_VALUES		/* THIS MUST REMAIN THE LAST ENTRY OF THIS LIST */
-};
-
-#define	AX25_DEF_IPDEFMODE	0			/* Datagram */
-#define	AX25_DEF_AXDEFMODE	0			/* Normal */
-#define	AX25_DEF_BACKOFF	1			/* Linear backoff */
-#define	AX25_DEF_CONMODE	2			/* Connected mode allowed */
-#define	AX25_DEF_WINDOW		2			/* Window=2 */
-#define	AX25_DEF_EWINDOW	32			/* Module-128 Window=32 */
-#define	AX25_DEF_T1		10000			/* T1=10s */
-#define	AX25_DEF_T2		3000			/* T2=3s  */
-#define	AX25_DEF_T3		300000			/* T3=300s */
-#define	AX25_DEF_N2		10			/* N2=10 */
-#define AX25_DEF_IDLE		0			/* Idle=None */
-#define AX25_DEF_PACLEN		256			/* Paclen=256 */
-#define	AX25_DEF_PROTOCOL	AX25_PROTO_STD_SIMPLEX	/* Standard AX.25 */
-#define AX25_DEF_DS_TIMEOUT	180000			/* DAMA timeout 3 minutes */
-
-typedef struct ax25_uid_assoc {
-	struct hlist_node	uid_node;
-	refcount_t		refcount;
-	kuid_t			uid;
-	ax25_address		call;
-} ax25_uid_assoc;
-
-#define ax25_uid_for_each(__ax25, list) \
-	hlist_for_each_entry(__ax25, list, uid_node)
-
-#define ax25_uid_hold(ax25) \
-	refcount_inc(&((ax25)->refcount))
-
-static inline void ax25_uid_put(ax25_uid_assoc *assoc)
-{
-	if (refcount_dec_and_test(&assoc->refcount)) {
-		kfree(assoc);
-	}
-}
-
-typedef struct {
-	ax25_address		calls[AX25_MAX_DIGIS];
-	unsigned char		repeated[AX25_MAX_DIGIS];
-	unsigned char		ndigi;
-	signed char		lastrepeat;
-} ax25_digi;
-
-typedef struct ax25_route {
-	struct ax25_route	*next;
-	ax25_address		callsign;
-	struct net_device	*dev;
-	ax25_digi		*digipeat;
-	char			ip_mode;
-} ax25_route;
-
-void __ax25_put_route(ax25_route *ax25_rt);
-
-extern rwlock_t ax25_route_lock;
-
-static inline void ax25_route_lock_use(void)
-{
-	read_lock(&ax25_route_lock);
-}
-
-static inline void ax25_route_lock_unuse(void)
-{
-	read_unlock(&ax25_route_lock);
-}
-
-typedef struct {
-	char			slave;			/* slave_mode?   */
-	struct timer_list	slave_timer;		/* timeout timer */
-	unsigned short		slave_timeout;		/* when? */
-} ax25_dama_info;
-
-typedef struct ax25_dev {
-	struct list_head	list;
-
-	struct net_device	*dev;
-	netdevice_tracker	dev_tracker;
-
-	struct net_device	*forward;
-	struct ctl_table_header *sysheader;
-	int			values[AX25_MAX_VALUES];
-#ifdef CONFIG_AX25_DAMA_SLAVE
-	ax25_dama_info		dama;
-#endif
-	refcount_t		refcount;
-	bool device_up;
-	struct rcu_head		rcu;
-} ax25_dev;
-
-typedef struct ax25_cb {
-	struct hlist_node	ax25_node;
-	ax25_address		source_addr, dest_addr;
-	ax25_digi		*digipeat;
-	ax25_dev		*ax25_dev;
-	netdevice_tracker	dev_tracker;
-	unsigned char		iamdigi;
-	unsigned char		state, modulus, pidincl;
-	unsigned short		vs, vr, va;
-	unsigned char		condition, backoff;
-	unsigned char		n2, n2count;
-	struct timer_list	t1timer, t2timer, t3timer, idletimer;
-	unsigned long		t1, t2, t3, idle, rtt;
-	unsigned short		paclen, fragno, fraglen;
-	struct sk_buff_head	write_queue;
-	struct sk_buff_head	reseq_queue;
-	struct sk_buff_head	ack_queue;
-	struct sk_buff_head	frag_queue;
-	unsigned char		window;
-	struct timer_list	timer, dtimer;
-	struct sock		*sk;		/* Backlink to socket */
-	refcount_t		refcount;
-} ax25_cb;
-
-struct ax25_sock {
-	struct sock		sk;
-	struct ax25_cb		*cb;
-};
-
-#define ax25_sk(ptr) container_of_const(ptr, struct ax25_sock, sk)
-
-static inline struct ax25_cb *sk_to_ax25(const struct sock *sk)
-{
-	return ax25_sk(sk)->cb;
-}
-
-#define ax25_for_each(__ax25, list) \
-	hlist_for_each_entry(__ax25, list, ax25_node)
-
-#define ax25_cb_hold(__ax25) \
-	refcount_inc(&((__ax25)->refcount))
-
-static __inline__ void ax25_cb_put(ax25_cb *ax25)
-{
-	if (refcount_dec_and_test(&ax25->refcount)) {
-		kfree(ax25->digipeat);
-		kfree(ax25);
-	}
-}
-
-static inline void ax25_dev_hold(ax25_dev *ax25_dev)
-{
-	refcount_inc(&ax25_dev->refcount);
-}
-
-static inline void ax25_dev_put(ax25_dev *ax25_dev)
-{
-	if (refcount_dec_and_test(&ax25_dev->refcount))
-		kfree_rcu(ax25_dev, rcu);
-}
-static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev)
-{
-	skb->dev      = dev;
-	skb_reset_mac_header(skb);
-	skb->pkt_type = PACKET_HOST;
-	return htons(ETH_P_AX25);
-}
-
-/* af_ax25.c */
-extern struct hlist_head ax25_list;
-extern spinlock_t ax25_list_lock;
-void ax25_cb_add(ax25_cb *);
-struct sock *ax25_find_listener(ax25_address *, int, struct net_device *, int);
-struct sock *ax25_get_socket(ax25_address *, ax25_address *, int);
-ax25_cb *ax25_find_cb(const ax25_address *, ax25_address *, ax25_digi *,
-		      struct net_device *);
-void ax25_send_to_raw(ax25_address *, struct sk_buff *, int);
-void ax25_destroy_socket(ax25_cb *);
-ax25_cb * __must_check ax25_create_cb(void);
-void ax25_fillin_cb(ax25_cb *, ax25_dev *);
-struct sock *ax25_make_new(struct sock *, struct ax25_dev *);
-
-/* ax25_addr.c */
-extern const ax25_address ax25_bcast;
-extern const ax25_address ax25_defaddr;
-extern const ax25_address null_ax25_address;
-char *ax2asc(char *buf, const ax25_address *);
-void asc2ax(ax25_address *addr, const char *callsign);
-int ax25cmp(const ax25_address *, const ax25_address *);
-int ax25digicmp(const ax25_digi *, const ax25_digi *);
-const unsigned char *ax25_addr_parse(const unsigned char *, int,
-	ax25_address *, ax25_address *, ax25_digi *, int *, int *);
-int ax25_addr_build(unsigned char *, const ax25_address *,
-		    const ax25_address *, const ax25_digi *, int, int);
-int ax25_addr_size(const ax25_digi *);
-void ax25_digi_invert(const ax25_digi *, ax25_digi *);
-
-/* ax25_dev.c */
-extern spinlock_t ax25_dev_lock;
-
-#if IS_ENABLED(CONFIG_AX25)
-static inline ax25_dev *ax25_dev_ax25dev(const struct net_device *dev)
-{
-	return rcu_dereference_rtnl(dev->ax25_ptr);
-}
-#endif
-
-ax25_dev *ax25_addr_ax25dev(ax25_address *);
-void ax25_dev_device_up(struct net_device *);
-void ax25_dev_device_down(struct net_device *);
-int ax25_fwd_ioctl(unsigned int, struct ax25_fwd_struct *);
-struct net_device *ax25_fwd_dev(struct net_device *);
-void ax25_dev_free(void);
-
-/* ax25_ds_in.c */
-int ax25_ds_frame_in(ax25_cb *, struct sk_buff *, int);
-
-/* ax25_ds_subr.c */
-void ax25_ds_nr_error_recovery(ax25_cb *);
-void ax25_ds_enquiry_response(ax25_cb *);
-void ax25_ds_establish_data_link(ax25_cb *);
-void ax25_dev_dama_off(ax25_dev *);
-void ax25_dama_on(ax25_cb *);
-void ax25_dama_off(ax25_cb *);
-
-/* ax25_ds_timer.c */
-void ax25_ds_setup_timer(ax25_dev *);
-void ax25_ds_set_timer(ax25_dev *);
-void ax25_ds_del_timer(ax25_dev *);
-void ax25_ds_timer(ax25_cb *);
-void ax25_ds_t1_timeout(ax25_cb *);
-void ax25_ds_heartbeat_expiry(ax25_cb *);
-void ax25_ds_t3timer_expiry(ax25_cb *);
-void ax25_ds_idletimer_expiry(ax25_cb *);
-
-/* ax25_iface.c */
-
-struct ax25_protocol {
-	struct ax25_protocol *next;
-	unsigned int pid;
-	int (*func)(struct sk_buff *, ax25_cb *);
-};
-
-void ax25_register_pid(struct ax25_protocol *ap);
-void ax25_protocol_release(unsigned int);
-
-struct ax25_linkfail {
-	struct hlist_node lf_node;
-	void (*func)(ax25_cb *, int);
-};
-
-void ax25_linkfail_register(struct ax25_linkfail *lf);
-void ax25_linkfail_release(struct ax25_linkfail *lf);
-int __must_check ax25_listen_register(const ax25_address *,
-				      struct net_device *);
-void ax25_listen_release(const ax25_address *, struct net_device *);
-int(*ax25_protocol_function(unsigned int))(struct sk_buff *, ax25_cb *);
-int ax25_listen_mine(const ax25_address *, struct net_device *);
-void ax25_link_failed(ax25_cb *, int);
-int ax25_protocol_is_registered(unsigned int);
-
-/* ax25_in.c */
-int ax25_rx_iframe(ax25_cb *, struct sk_buff *);
-int ax25_kiss_rcv(struct sk_buff *, struct net_device *, struct packet_type *,
-		  struct net_device *);
-
-/* ax25_ip.c */
-netdev_tx_t ax25_ip_xmit(struct sk_buff *skb);
-extern const struct header_ops ax25_header_ops;
-
-/* ax25_out.c */
-ax25_cb *ax25_send_frame(struct sk_buff *, int, const ax25_address *,
-			 ax25_address *, ax25_digi *, struct net_device *);
-void ax25_output(ax25_cb *, int, struct sk_buff *);
-void ax25_kick(ax25_cb *);
-void ax25_transmit_buffer(ax25_cb *, struct sk_buff *, int);
-void ax25_queue_xmit(struct sk_buff *skb, struct net_device *dev);
-int ax25_check_iframes_acked(ax25_cb *, unsigned short);
-
-/* ax25_route.c */
-void ax25_rt_device_down(struct net_device *);
-int ax25_rt_ioctl(unsigned int, void __user *);
-extern const struct seq_operations ax25_rt_seqops;
-ax25_route *ax25_get_route(ax25_address *addr, struct net_device *dev);
-struct sk_buff *ax25_rt_build_path(struct sk_buff *, ax25_address *,
-				   ax25_address *, ax25_digi *);
-void ax25_rt_free(void);
-
-/* ax25_std_in.c */
-int ax25_std_frame_in(ax25_cb *, struct sk_buff *, int);
-
-/* ax25_std_subr.c */
-void ax25_std_nr_error_recovery(ax25_cb *);
-void ax25_std_establish_data_link(ax25_cb *);
-void ax25_std_transmit_enquiry(ax25_cb *);
-void ax25_std_enquiry_response(ax25_cb *);
-void ax25_std_timeout_response(ax25_cb *);
-
-/* ax25_std_timer.c */
-void ax25_std_heartbeat_expiry(ax25_cb *);
-void ax25_std_t1timer_expiry(ax25_cb *);
-void ax25_std_t2timer_expiry(ax25_cb *);
-void ax25_std_t3timer_expiry(ax25_cb *);
-void ax25_std_idletimer_expiry(ax25_cb *);
-
-/* ax25_subr.c */
-void ax25_clear_queues(ax25_cb *);
-void ax25_frames_acked(ax25_cb *, unsigned short);
-void ax25_requeue_frames(ax25_cb *);
-int ax25_validate_nr(ax25_cb *, unsigned short);
-int ax25_decode(ax25_cb *, struct sk_buff *, int *, int *, int *);
-void ax25_send_control(ax25_cb *, int, int, int);
-void ax25_return_dm(struct net_device *, ax25_address *, ax25_address *,
-		    ax25_digi *);
-void ax25_calculate_t1(ax25_cb *);
-void ax25_calculate_rtt(ax25_cb *);
-void ax25_disconnect(ax25_cb *, int);
-
-/* ax25_timer.c */
-void ax25_setup_timers(ax25_cb *);
-void ax25_start_heartbeat(ax25_cb *);
-void ax25_start_t1timer(ax25_cb *);
-void ax25_start_t2timer(ax25_cb *);
-void ax25_start_t3timer(ax25_cb *);
-void ax25_start_idletimer(ax25_cb *);
-void ax25_stop_heartbeat(ax25_cb *);
-void ax25_stop_t1timer(ax25_cb *);
-void ax25_stop_t2timer(ax25_cb *);
-void ax25_stop_t3timer(ax25_cb *);
-void ax25_stop_idletimer(ax25_cb *);
-int ax25_t1timer_running(ax25_cb *);
-unsigned long ax25_display_timer(struct timer_list *);
-
-/* ax25_uid.c */
-extern int  ax25_uid_policy;
-ax25_uid_assoc *ax25_findbyuid(kuid_t);
-int __must_check ax25_uid_ioctl(int, struct sockaddr_ax25 *);
-extern const struct seq_operations ax25_uid_seqops;
-void ax25_uid_free(void);
-
-/* sysctl_net_ax25.c */
-#ifdef CONFIG_SYSCTL
-int ax25_register_dev_sysctl(ax25_dev *ax25_dev);
-void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev);
-#else
-static inline int ax25_register_dev_sysctl(ax25_dev *ax25_dev) { return 0; }
-static inline void ax25_unregister_dev_sysctl(ax25_dev *ax25_dev) {}
-#endif /* CONFIG_SYSCTL */
+#define	AX25_ADDR_LEN	7
+#define	AX25_P_IP	0xCC
 
 #endif
diff --git a/include/net/netrom.h b/include/net/netrom.h
deleted file mode 100644
index f0565a5987d1..000000000000
--- a/include/net/netrom.h
+++ /dev/null
@@ -1,273 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0 */
-/*
- *	Declarations of NET/ROM type objects.
- *
- *	Jonathan Naylor G4KLX	9/4/95
- */
-
-#ifndef _NETROM_H
-#define _NETROM_H 
-
-#include <linux/netrom.h>
-#include <linux/list.h>
-#include <linux/slab.h>
-#include <net/sock.h>
-#include <linux/refcount.h>
-#include <linux/seq_file.h>
-#include <net/ax25.h>
-
-#define	NR_NETWORK_LEN			15
-#define	NR_TRANSPORT_LEN		5
-
-#define	NR_PROTO_IP			0x0C
-
-#define	NR_PROTOEXT			0x00
-#define	NR_CONNREQ			0x01
-#define	NR_CONNACK			0x02
-#define	NR_DISCREQ			0x03
-#define	NR_DISCACK			0x04
-#define	NR_INFO				0x05
-#define	NR_INFOACK			0x06
-#define	NR_RESET			0x07
-
-#define	NR_CHOKE_FLAG			0x80
-#define	NR_NAK_FLAG			0x40
-#define	NR_MORE_FLAG			0x20
-
-/* Define Link State constants. */
-enum {
-	NR_STATE_0,
-	NR_STATE_1,
-	NR_STATE_2,
-	NR_STATE_3
-};
-
-#define	NR_COND_ACK_PENDING		0x01
-#define	NR_COND_REJECT			0x02
-#define	NR_COND_PEER_RX_BUSY		0x04
-#define	NR_COND_OWN_RX_BUSY		0x08
-
-#define NR_DEFAULT_T1			120000		/* Outstanding frames - 120 seconds */
-#define NR_DEFAULT_T2			5000		/* Response delay     - 5 seconds */
-#define NR_DEFAULT_N2			3		/* Number of Retries - 3 */
-#define	NR_DEFAULT_T4			180000		/* Busy Delay - 180 seconds */
-#define	NR_DEFAULT_IDLE			0		/* No Activity Timeout - none */
-#define	NR_DEFAULT_WINDOW		4		/* Default Window Size - 4 */
-#define	NR_DEFAULT_OBS			6		/* Default Obsolescence Count - 6 */
-#define	NR_DEFAULT_QUAL			10		/* Default Neighbour Quality - 10 */
-#define	NR_DEFAULT_TTL			16		/* Default Time To Live - 16 */
-#define	NR_DEFAULT_ROUTING		1		/* Is routing enabled ? */
-#define	NR_DEFAULT_FAILS		2		/* Link fails until route fails */
-#define	NR_DEFAULT_RESET		0		/* Sent / accept reset cmds? */
-
-#define NR_MODULUS 			256
-#define NR_MAX_WINDOW_SIZE		127			/* Maximum Window Allowable - 127 */
-#define	NR_MAX_PACKET_SIZE		236			/* Maximum Packet Length - 236 */
-
-struct nr_sock {
-	struct sock		sock;
-	ax25_address		user_addr, source_addr, dest_addr;
-	struct net_device		*device;
-	unsigned char		my_index,   my_id;
-	unsigned char		your_index, your_id;
-	unsigned char		state, condition, bpqext, window;
-	unsigned short		vs, vr, va, vl;
-	unsigned char		n2, n2count;
-	unsigned long		t1, t2, t4, idle;
-	unsigned short		fraglen;
-	struct timer_list	t1timer;
-	struct timer_list	t2timer;
-	struct timer_list	t4timer;
-	struct timer_list	idletimer;
-	struct sk_buff_head	ack_queue;
-	struct sk_buff_head	reseq_queue;
-	struct sk_buff_head	frag_queue;
-};
-
-#define nr_sk(sk) ((struct nr_sock *)(sk))
-
-struct nr_neigh {
-	struct hlist_node	neigh_node;
-	ax25_address		callsign;
-	ax25_digi		*digipeat;
-	ax25_cb			*ax25;
-	struct net_device	*dev;
-	unsigned char		quality;
-	unsigned char		locked;
-	unsigned short		count;
-	unsigned int		number;
-	unsigned char		failed;
-	refcount_t		refcount;
-};
-
-struct nr_route {
-	unsigned char   quality;
-	unsigned char   obs_count;
-	struct nr_neigh *neighbour;
-};
-
-struct nr_node {
-	struct hlist_node	node_node;
-	ax25_address		callsign;
-	char			mnemonic[7];
-	unsigned char		which;
-	unsigned char		count;
-	struct nr_route		routes[3];
-	refcount_t		refcount;
-	spinlock_t		node_lock;
-};
-
-/*********************************************************************
- *	nr_node & nr_neigh lists, refcounting and locking
- *********************************************************************/
-
-#define nr_node_hold(__nr_node) \
-	refcount_inc(&((__nr_node)->refcount))
-
-static __inline__ void nr_node_put(struct nr_node *nr_node)
-{
-	if (refcount_dec_and_test(&nr_node->refcount)) {
-		kfree(nr_node);
-	}
-}
-
-#define nr_neigh_hold(__nr_neigh) \
-	refcount_inc(&((__nr_neigh)->refcount))
-
-static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
-{
-	if (refcount_dec_and_test(&nr_neigh->refcount)) {
-		if (nr_neigh->ax25)
-			ax25_cb_put(nr_neigh->ax25);
-		kfree(nr_neigh->digipeat);
-		kfree(nr_neigh);
-	}
-}
-
-/* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
- */
-static __inline__ void nr_node_lock(struct nr_node *nr_node)
-{
-	nr_node_hold(nr_node);
-	spin_lock_bh(&nr_node->node_lock);
-}
-
-static __inline__ void nr_node_unlock(struct nr_node *nr_node)
-{
-	spin_unlock_bh(&nr_node->node_lock);
-	nr_node_put(nr_node);
-}
-
-#define nr_neigh_for_each(__nr_neigh, list) \
-	hlist_for_each_entry(__nr_neigh, list, neigh_node)
-
-#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
-	hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
-
-#define nr_node_for_each(__nr_node, list) \
-	hlist_for_each_entry(__nr_node, list, node_node)
-
-#define nr_node_for_each_safe(__nr_node, node2, list) \
-	hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
-
-
-/*********************************************************************/
-
-/* af_netrom.c */
-extern int  sysctl_netrom_default_path_quality;
-extern int  sysctl_netrom_obsolescence_count_initialiser;
-extern int  sysctl_netrom_network_ttl_initialiser;
-extern int  sysctl_netrom_transport_timeout;
-extern int  sysctl_netrom_transport_maximum_tries;
-extern int  sysctl_netrom_transport_acknowledge_delay;
-extern int  sysctl_netrom_transport_busy_delay;
-extern int  sysctl_netrom_transport_requested_window_size;
-extern int  sysctl_netrom_transport_no_activity_timeout;
-extern int  sysctl_netrom_routing_control;
-extern int  sysctl_netrom_link_fails_count;
-extern int  sysctl_netrom_reset_circuit;
-
-int nr_rx_frame(struct sk_buff *, struct net_device *);
-void nr_destroy_socket(struct sock *);
-
-/* nr_dev.c */
-int nr_rx_ip(struct sk_buff *, struct net_device *);
-void nr_setup(struct net_device *);
-
-/* nr_in.c */
-int nr_process_rx_frame(struct sock *, struct sk_buff *);
-
-/* nr_loopback.c */
-void nr_loopback_init(void);
-void nr_loopback_clear(void);
-int nr_loopback_queue(struct sk_buff *);
-
-/* nr_out.c */
-void nr_output(struct sock *, struct sk_buff *);
-void nr_send_nak_frame(struct sock *);
-void nr_kick(struct sock *);
-void nr_transmit_buffer(struct sock *, struct sk_buff *);
-void nr_establish_data_link(struct sock *);
-void nr_enquiry_response(struct sock *);
-void nr_check_iframes_acked(struct sock *, unsigned short);
-
-/* nr_route.c */
-void nr_rt_device_down(struct net_device *);
-struct net_device *nr_dev_first(void);
-struct net_device *nr_dev_get(ax25_address *);
-int nr_rt_ioctl(unsigned int, void __user *);
-void nr_link_failed(ax25_cb *, int);
-int nr_route_frame(struct sk_buff *, ax25_cb *);
-extern const struct seq_operations nr_node_seqops;
-extern const struct seq_operations nr_neigh_seqops;
-void nr_rt_free(void);
-
-/* nr_subr.c */
-void nr_clear_queues(struct sock *);
-void nr_frames_acked(struct sock *, unsigned short);
-void nr_requeue_frames(struct sock *);
-int nr_validate_nr(struct sock *, unsigned short);
-int nr_in_rx_window(struct sock *, unsigned short);
-void nr_write_internal(struct sock *, int);
-
-void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
-
-/*
- * This routine is called when a Connect Acknowledge with the Choke Flag
- * set is needed to refuse a connection.
- */
-#define nr_transmit_refusal(skb, mine)					\
-do {									\
-	__nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG);	\
-} while (0)
-
-/*
- * This routine is called when we don't have a circuit matching an incoming
- * NET/ROM packet.  This is an G8PZT Xrouter extension.
- */
-#define nr_transmit_reset(skb, mine)					\
-do {									\
-	__nr_transmit_reply((skb), (mine), NR_RESET);			\
-} while (0)
-
-void nr_disconnect(struct sock *, int);
-
-/* nr_timer.c */
-void nr_init_timers(struct sock *sk);
-void nr_start_heartbeat(struct sock *);
-void nr_start_t1timer(struct sock *);
-void nr_start_t2timer(struct sock *);
-void nr_start_t4timer(struct sock *);
-void nr_start_idletimer(struct sock *);
-void nr_stop_heartbeat(struct sock *);
-void nr_stop_t1timer(struct sock *);
-void nr_stop_t2timer(struct sock *);
-void nr_stop_t4timer(struct sock *);
-void nr_stop_idletimer(struct sock *);
-int nr_t1timer_running(struct sock *);
-
-/* sysctl_net_netrom.c */
-int nr_register_sysctl(void);
-void nr_unregister_sysctl(void);
-
-#endif
diff --git a/include/net/rose.h b/include/net/rose.h
index 2b5491bbf39a..41bfcb224f0b 100644
--- a/include/net/rose.h
+++ b/include/net/rose.h
@@ -1,266 +1,7 @@
 /* SPDX-License-Identifier: GPL-2.0 */
-/*
- *	Declarations of Rose type objects.
- *
- *	Jonathan Naylor G4KLX	25/8/96
- */
-
 #ifndef _ROSE_H
-#define _ROSE_H 
-
-#include <linux/refcount.h>
-#include <linux/rose.h>
-#include <net/ax25.h>
-#include <net/sock.h>
-
-#define	ROSE_ADDR_LEN			5
-
-#define	ROSE_MIN_LEN			3
-
-#define	ROSE_CALL_REQ_ADDR_LEN_OFF	3
-#define	ROSE_CALL_REQ_ADDR_LEN_VAL	0xAA	/* each address is 10 digits */
-#define	ROSE_CALL_REQ_DEST_ADDR_OFF	4
-#define	ROSE_CALL_REQ_SRC_ADDR_OFF	9
-#define	ROSE_CALL_REQ_FACILITIES_OFF	14
-
-#define	ROSE_GFI			0x10
-#define	ROSE_Q_BIT			0x80
-#define	ROSE_D_BIT			0x40
-#define	ROSE_M_BIT			0x10
-
-#define	ROSE_CALL_REQUEST		0x0B
-#define	ROSE_CALL_ACCEPTED		0x0F
-#define	ROSE_CLEAR_REQUEST		0x13
-#define	ROSE_CLEAR_CONFIRMATION		0x17
-#define	ROSE_DATA			0x00
-#define	ROSE_INTERRUPT			0x23
-#define	ROSE_INTERRUPT_CONFIRMATION	0x27
-#define	ROSE_RR				0x01
-#define	ROSE_RNR			0x05
-#define	ROSE_REJ			0x09
-#define	ROSE_RESET_REQUEST		0x1B
-#define	ROSE_RESET_CONFIRMATION		0x1F
-#define	ROSE_REGISTRATION_REQUEST	0xF3
-#define	ROSE_REGISTRATION_CONFIRMATION	0xF7
-#define	ROSE_RESTART_REQUEST		0xFB
-#define	ROSE_RESTART_CONFIRMATION	0xFF
-#define	ROSE_DIAGNOSTIC			0xF1
-#define	ROSE_ILLEGAL			0xFD
-
-/* Define Link State constants. */
-
-enum {
-	ROSE_STATE_0,			/* Ready */
-	ROSE_STATE_1,			/* Awaiting Call Accepted */
-	ROSE_STATE_2,			/* Awaiting Clear Confirmation */
-	ROSE_STATE_3,			/* Data Transfer */
-	ROSE_STATE_4,			/* Awaiting Reset Confirmation */
-	ROSE_STATE_5			/* Deferred Call Acceptance */
-};
-
-#define ROSE_DEFAULT_T0			180000		/* Default T10 T20 value */
-#define ROSE_DEFAULT_T1			200000		/* Default T11 T21 value */
-#define ROSE_DEFAULT_T2			180000		/* Default T12 T22 value */
-#define	ROSE_DEFAULT_T3			180000		/* Default T13 T23 value */
-#define	ROSE_DEFAULT_HB			5000		/* Default Holdback value */
-#define	ROSE_DEFAULT_IDLE		0		/* No Activity Timeout - none */
-#define	ROSE_DEFAULT_ROUTING		1		/* Default routing flag */
-#define	ROSE_DEFAULT_FAIL_TIMEOUT	120000		/* Time until link considered usable */
-#define	ROSE_DEFAULT_MAXVC		50		/* Maximum number of VCs per neighbour */
-#define	ROSE_DEFAULT_WINDOW_SIZE	7		/* Default window size */
-
-#define ROSE_MODULUS 			8
-#define	ROSE_MAX_PACKET_SIZE		251		/* Maximum packet size */
-
-#define	ROSE_COND_ACK_PENDING		0x01
-#define	ROSE_COND_PEER_RX_BUSY		0x02
-#define	ROSE_COND_OWN_RX_BUSY		0x04
-
-#define	FAC_NATIONAL			0x00
-#define	FAC_CCITT			0x0F
-
-#define	FAC_NATIONAL_RAND		0x7F
-#define	FAC_NATIONAL_FLAGS		0x3F
-#define	FAC_NATIONAL_DEST_DIGI		0xE9
-#define	FAC_NATIONAL_SRC_DIGI		0xEB
-#define	FAC_NATIONAL_FAIL_CALL		0xED
-#define	FAC_NATIONAL_FAIL_ADD		0xEE
-#define	FAC_NATIONAL_DIGIS			0xEF
-
-#define	FAC_CCITT_DEST_NSAP		0xC9
-#define	FAC_CCITT_SRC_NSAP		0xCB
-
-struct rose_neigh {
-	struct rose_neigh	*next;
-	ax25_address		callsign;
-	ax25_digi		*digipeat;
-	ax25_cb			*ax25;
-	struct net_device		*dev;
-	unsigned short		count;
-	refcount_t		use;
-	unsigned int		number;
-	char			restarted;
-	char			dce_mode;
-	char			loopback;
-	struct sk_buff_head	queue;
-	struct timer_list	t0timer;
-	struct timer_list	ftimer;
-};
-
-struct rose_node {
-	struct rose_node	*next;
-	rose_address		address;
-	unsigned short		mask;
-	unsigned char		count;
-	char			loopback;
-	struct rose_neigh	*neighbour[3];
-};
-
-struct rose_route {
-	struct rose_route	*next;
-	unsigned int		lci1, lci2;
-	rose_address		src_addr, dest_addr;
-	ax25_address		src_call, dest_call;
-	struct rose_neigh 	*neigh1, *neigh2;
-	unsigned int		rand;
-};
-
-struct rose_sock {
-	struct sock		sock;
-	rose_address		source_addr,   dest_addr;
-	ax25_address		source_call,   dest_call;
-	unsigned char		source_ndigis, dest_ndigis;
-	ax25_address		source_digis[ROSE_MAX_DIGIS];
-	ax25_address		dest_digis[ROSE_MAX_DIGIS];
-	struct rose_neigh	*neighbour;
-	struct net_device	*device;
-	netdevice_tracker	dev_tracker;
-	unsigned int		lci, rand;
-	unsigned char		state, condition, qbitincl, defer;
-	unsigned char		cause, diagnostic;
-	unsigned short		vs, vr, va, vl;
-	unsigned long		t1, t2, t3, hb, idle;
-#ifdef M_BIT
-	unsigned short		fraglen;
-	struct sk_buff_head	frag_queue;
-#endif
-	struct sk_buff_head	ack_queue;
-	struct rose_facilities_struct facilities;
-	struct timer_list	timer;
-	struct timer_list	idletimer;
-};
-
-#define rose_sk(sk) ((struct rose_sock *)(sk))
-
-static inline void rose_neigh_hold(struct rose_neigh *rose_neigh)
-{
-	refcount_inc(&rose_neigh->use);
-}
-
-static inline void rose_neigh_put(struct rose_neigh *rose_neigh)
-{
-	if (refcount_dec_and_test(&rose_neigh->use)) {
-		if (rose_neigh->ax25)
-			ax25_cb_put(rose_neigh->ax25);
-		kfree(rose_neigh->digipeat);
-		kfree(rose_neigh);
-	}
-}
-
-/* af_rose.c */
-extern ax25_address rose_callsign;
-extern int  sysctl_rose_restart_request_timeout;
-extern int  sysctl_rose_call_request_timeout;
-extern int  sysctl_rose_reset_request_timeout;
-extern int  sysctl_rose_clear_request_timeout;
-extern int  sysctl_rose_no_activity_timeout;
-extern int  sysctl_rose_ack_hold_back_timeout;
-extern int  sysctl_rose_routing_control;
-extern int  sysctl_rose_link_fail_timeout;
-extern int  sysctl_rose_maximum_vcs;
-extern int  sysctl_rose_window_size;
-
-int rosecmp(const rose_address *, const rose_address *);
-int rosecmpm(const rose_address *, const rose_address *, unsigned short);
-char *rose2asc(char *buf, const rose_address *);
-struct sock *rose_find_socket(unsigned int, struct rose_neigh *);
-void rose_kill_by_neigh(struct rose_neigh *);
-unsigned int rose_new_lci(struct rose_neigh *);
-int rose_rx_call_request(struct sk_buff *, struct net_device *,
-			 struct rose_neigh *, unsigned int);
-void rose_destroy_socket(struct sock *);
-
-/* rose_dev.c */
-void rose_setup(struct net_device *);
-
-/* rose_in.c */
-int rose_process_rx_frame(struct sock *, struct sk_buff *);
-
-/* rose_link.c */
-void rose_start_ftimer(struct rose_neigh *);
-void rose_stop_ftimer(struct rose_neigh *);
-void rose_stop_t0timer(struct rose_neigh *);
-int rose_ftimer_running(struct rose_neigh *);
-void rose_link_rx_restart(struct sk_buff *, struct rose_neigh *,
-			  unsigned short);
-void rose_transmit_clear_request(struct rose_neigh *, unsigned int,
-				 unsigned char, unsigned char);
-void rose_transmit_link(struct sk_buff *, struct rose_neigh *);
-
-/* rose_loopback.c */
-void rose_loopback_init(void);
-void rose_loopback_clear(void);
-int rose_loopback_queue(struct sk_buff *, struct rose_neigh *);
-
-/* rose_out.c */
-void rose_kick(struct sock *);
-void rose_enquiry_response(struct sock *);
-
-/* rose_route.c */
-extern struct rose_neigh *rose_loopback_neigh;
-extern const struct seq_operations rose_neigh_seqops;
-extern const struct seq_operations rose_node_seqops;
-extern struct seq_operations rose_route_seqops;
-
-void rose_add_loopback_neigh(void);
-int __must_check rose_add_loopback_node(const rose_address *);
-void rose_del_loopback_node(const rose_address *);
-void rose_rt_device_down(struct net_device *);
-void rose_link_device_down(struct net_device *);
-struct net_device *rose_dev_first(void);
-struct net_device *rose_dev_get(rose_address *);
-struct rose_route *rose_route_free_lci(unsigned int, struct rose_neigh *);
-struct rose_neigh *rose_get_neigh(rose_address *, unsigned char *,
-				  unsigned char *, int);
-int rose_rt_ioctl(unsigned int, void __user *);
-void rose_link_failed(ax25_cb *, int);
-int rose_route_frame(struct sk_buff *, ax25_cb *);
-void rose_rt_free(void);
-
-/* rose_subr.c */
-void rose_clear_queues(struct sock *);
-void rose_frames_acked(struct sock *, unsigned short);
-void rose_requeue_frames(struct sock *);
-int rose_validate_nr(struct sock *, unsigned short);
-void rose_write_internal(struct sock *, int);
-int rose_decode(struct sk_buff *, int *, int *, int *, int *, int *);
-int rose_parse_facilities(unsigned char *, unsigned int,
-			  struct rose_facilities_struct *);
-void rose_disconnect(struct sock *, int, int, int);
-
-/* rose_timer.c */
-void rose_start_heartbeat(struct sock *);
-void rose_start_t1timer(struct sock *);
-void rose_start_t2timer(struct sock *);
-void rose_start_t3timer(struct sock *);
-void rose_start_hbtimer(struct sock *);
-void rose_start_idletimer(struct sock *);
-void rose_stop_heartbeat(struct sock *);
-void rose_stop_timer(struct sock *);
-void rose_stop_idletimer(struct sock *);
+#define _ROSE_H
 
-/* sysctl_net_rose.c */
-void rose_register_sysctl(void);
-void rose_unregister_sysctl(void);
+#define	ROSE_ADDR_LEN	5
 
 #endif