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

#ifndef _UAPI_LINUX_CFM_BRIDGE_H_
#define _UAPI_LINUX_CFM_BRIDGE_H_

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

#define ETHER_HEADER_LENGTH             (6+6+4+2)
#define CFM_MAID_LENGTH                 48
#define CFM_CCM_PDU_LENGTH              75
#define CFM_PORT_STATUS_TLV_LENGTH      4
#define CFM_IF_STATUS_TLV_LENGTH        4
#define CFM_IF_STATUS_TLV_TYPE          4
#define CFM_PORT_STATUS_TLV_TYPE        2
#define CFM_ENDE_TLV_TYPE               0
#define CFM_CCM_MAX_FRAME_LENGTH        (ETHER_HEADER_LENGTH+\
                                         CFM_CCM_PDU_LENGTH+\
                                         CFM_PORT_STATUS_TLV_LENGTH+\
                                         CFM_IF_STATUS_TLV_LENGTH)
#define CFM_FRAME_PRIO                  7
#define CFM_CCM_TLV_OFFSET              70
#define CFM_CCM_PDU_MAID_OFFSET         10
#define CFM_CCM_PDU_MEPID_OFFSET        8
#define CFM_CCM_PDU_SEQNR_OFFSET        4
#define CFM_CCM_PDU_TLV_OFFSET          74
#define CFM_CCM_ITU_RESERVED_SIZE       16

struct br_cfm_common_hdr {
        __u8 mdlevel_version;
        __u8 opcode;
        __u8 flags;
        __u8 tlv_offset;
};

enum br_cfm_opcodes {
        BR_CFM_OPCODE_CCM = 0x1,
};

/* MEP domain */
enum br_cfm_domain {
        BR_CFM_PORT,
        BR_CFM_VLAN,
};

/* MEP direction */
enum br_cfm_mep_direction {
        BR_CFM_MEP_DIRECTION_DOWN,
        BR_CFM_MEP_DIRECTION_UP,
};

/* CCM interval supported. */
enum br_cfm_ccm_interval {
        BR_CFM_CCM_INTERVAL_NONE,
        BR_CFM_CCM_INTERVAL_3_3_MS,
        BR_CFM_CCM_INTERVAL_10_MS,
        BR_CFM_CCM_INTERVAL_100_MS,
        BR_CFM_CCM_INTERVAL_1_SEC,
        BR_CFM_CCM_INTERVAL_10_SEC,
        BR_CFM_CCM_INTERVAL_1_MIN,
        BR_CFM_CCM_INTERVAL_10_MIN,
};

#endif