/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */


#ifndef _UAPI_CAN_GW_H
#define _UAPI_CAN_GW_H

#include <linux/types.h>
#include <linux/can.h>

struct rtcanmsg {
	__u8  can_family;
	__u8  gwtype;
	__u16 flags;
};


enum {
	CGW_TYPE_UNSPEC,
	CGW_TYPE_CAN_CAN,	
	__CGW_TYPE_MAX
};

#define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1)


enum {
	CGW_UNSPEC,
	CGW_MOD_AND,	
	CGW_MOD_OR,	
	CGW_MOD_XOR,	
	CGW_MOD_SET,	
	CGW_CS_XOR,	
	CGW_CS_CRC8,	
	CGW_HANDLED,	
	CGW_DROPPED,	
	CGW_SRC_IF,	
	CGW_DST_IF,	
	CGW_FILTER,	
	CGW_DELETED,	
	CGW_LIM_HOPS,	
	CGW_MOD_UID,	
	CGW_FDMOD_AND,	
	CGW_FDMOD_OR,	
	CGW_FDMOD_XOR,	
	CGW_FDMOD_SET,	
	__CGW_MAX
};

#define CGW_MAX (__CGW_MAX - 1)

#define CGW_FLAGS_CAN_ECHO 0x01
#define CGW_FLAGS_CAN_SRC_TSTAMP 0x02
#define CGW_FLAGS_CAN_IIF_TX_OK 0x04
#define CGW_FLAGS_CAN_FD 0x08

#define CGW_MOD_FUNCS 4 


#define CGW_MOD_ID	0x01
#define CGW_MOD_DLC	0x02		
#define CGW_MOD_LEN	CGW_MOD_DLC	
#define CGW_MOD_DATA	0x04
#define CGW_MOD_FLAGS	0x08		

#define CGW_FRAME_MODS 4 

#define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS)

struct cgw_frame_mod {
	struct can_frame cf;
	__u8 modtype;
} __attribute__((packed));

struct cgw_fdframe_mod {
	struct canfd_frame cf;
	__u8 modtype;
} __attribute__((packed));

#define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod)
#define CGW_FDMODATTR_LEN sizeof(struct cgw_fdframe_mod)

struct cgw_csum_xor {
	__s8 from_idx;
	__s8 to_idx;
	__s8 result_idx;
	__u8 init_xor_val;
} __attribute__((packed));

struct cgw_csum_crc8 {
	__s8 from_idx;
	__s8 to_idx;
	__s8 result_idx;
	__u8 init_crc_val;
	__u8 final_xor_val;
	__u8 crctab[256];
	__u8 profile;
	__u8 profile_data[20];
} __attribute__((packed));


#define CGW_CS_XOR_LEN  sizeof(struct cgw_csum_xor)
#define CGW_CS_CRC8_LEN  sizeof(struct cgw_csum_crc8)


enum {
	CGW_CRC8PRF_UNSPEC,
	CGW_CRC8PRF_1U8,	
	CGW_CRC8PRF_16U8,	
	CGW_CRC8PRF_SFFID_XOR,	
	__CGW_CRC8PRF_MAX
};

#define CGW_CRC8PRF_MAX (__CGW_CRC8PRF_MAX - 1)



#endif 
