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  +   €l–Ь4э( ©і( 	ЕЂfаB¦-яД„bd?_†I|ҐЏ+ИЗ ;    /* SPDX-License-Identifier: GPL-2.0 */
/*
 *	Declarations of AX.25 type objects.
 *
 *	Alan Cox (GW4PTS) 	10/11/93
 */
#ifndef _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,
#ifdef CONFIG_AX25_DAMA_MASTER
	AX25_PROTO_DAMA_MASTER,
#define AX25_PROTO_MAX AX25_PROTO_DAMA_MASTER
#endif
#endif
	__AX25_PROTO_MAX,
	AX25_PROTO_MAX = __AX25_PROTO_MAX -1
};

enum {
	AX25