/* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */

#ifndef _UAPI_LINUX_IF_FDDI_H
#define _UAPI_LINUX_IF_FDDI_H

#include <linux/types.h>


#define FDDI_K_ALEN		6	
#define FDDI_K_8022_HLEN	16	
#define FDDI_K_SNAP_HLEN	21	
#define FDDI_K_8022_ZLEN	16	
#define FDDI_K_SNAP_ZLEN	21	
#define FDDI_K_8022_DLEN	4475	
#define FDDI_K_SNAP_DLEN	4470	
#define FDDI_K_LLC_ZLEN		13	
#define FDDI_K_LLC_LEN		4491	
#define FDDI_K_OUI_LEN		3	


#define FDDI_FC_K_CLASS_MASK		0x80	
#define FDDI_FC_K_CLASS_SYNC		0x80
#define FDDI_FC_K_CLASS_ASYNC		0x00
#define FDDI_FC_K_ALEN_MASK		0x40	
#define FDDI_FC_K_ALEN_48		0x40
#define FDDI_FC_K_ALEN_16		0x00
#define FDDI_FC_K_FORMAT_MASK		0x30	
#define FDDI_FC_K_FORMAT_FUTURE		0x30
#define FDDI_FC_K_FORMAT_IMPLEMENTOR	0x20
#define FDDI_FC_K_FORMAT_LLC		0x10
#define FDDI_FC_K_FORMAT_MANAGEMENT	0x00
#define FDDI_FC_K_CONTROL_MASK		0x0f	


#define FDDI_FC_K_VOID			0x00
#define FDDI_FC_K_NON_RESTRICTED_TOKEN	0x80
#define FDDI_FC_K_RESTRICTED_TOKEN	0xC0
#define FDDI_FC_K_SMT_MIN		0x41
#define FDDI_FC_K_SMT_MAX		0x4F
#define FDDI_FC_K_MAC_MIN		0xC1
#define FDDI_FC_K_MAC_MAX		0xCF
#define FDDI_FC_K_ASYNC_LLC_MIN		0x50
#define FDDI_FC_K_ASYNC_LLC_DEF		0x54
#define FDDI_FC_K_ASYNC_LLC_MAX		0x5F
#define FDDI_FC_K_SYNC_LLC_MIN		0xD0
#define FDDI_FC_K_SYNC_LLC_MAX		0xD7
#define FDDI_FC_K_IMPLEMENTOR_MIN	0x60
#define FDDI_FC_K_IMPLEMENTOR_MAX	0x6F
#define FDDI_FC_K_RESERVED_MIN		0x70
#define FDDI_FC_K_RESERVED_MAX		0x7F


#define FDDI_EXTENDED_SAP		0xAA
#define FDDI_UI_CMD			0x03


struct fddi_8022_1_hdr {
	__u8	dsap;			
	__u8	ssap;			
	__u8	ctrl;			
} __attribute__((packed));


struct fddi_8022_2_hdr {
	__u8	dsap;			
	__u8	ssap;			
	__u8	ctrl_1;			
	__u8	ctrl_2;			
} __attribute__((packed));


struct fddi_snap_hdr {
	__u8	dsap;			
	__u8	ssap;			
	__u8	ctrl;			
	__u8	oui[FDDI_K_OUI_LEN];	
	__be16	ethertype;		
} __attribute__((packed));


struct fddihdr {
	__u8	fc;			
	__u8	daddr[FDDI_K_ALEN];	
	__u8	saddr[FDDI_K_ALEN];	
	union {
		struct fddi_8022_1_hdr	llc_8022_1;
		struct fddi_8022_2_hdr	llc_8022_2;
		struct fddi_snap_hdr	llc_snap;
	} hdr;
} __attribute__((packed));


#endif 
