1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 
3 #ifndef _UAPI_LINUX_CFM_BRIDGE_H_
4 #define _UAPI_LINUX_CFM_BRIDGE_H_
5 
6 #include <linux/types.h>
7 #include <linux/if_ether.h>
8 
9 #define ETHER_HEADER_LENGTH		(6+6+4+2)
10 #define CFM_MAID_LENGTH			48
11 #define CFM_CCM_PDU_LENGTH		75
12 #define CFM_PORT_STATUS_TLV_LENGTH	4
13 #define CFM_IF_STATUS_TLV_LENGTH	4
14 #define CFM_IF_STATUS_TLV_TYPE		4
15 #define CFM_PORT_STATUS_TLV_TYPE	2
16 #define CFM_ENDE_TLV_TYPE		0
17 #define CFM_CCM_MAX_FRAME_LENGTH	(ETHER_HEADER_LENGTH+\
18 					 CFM_CCM_PDU_LENGTH+\
19 					 CFM_PORT_STATUS_TLV_LENGTH+\
20 					 CFM_IF_STATUS_TLV_LENGTH)
21 #define CFM_FRAME_PRIO			7
22 #define CFM_CCM_TLV_OFFSET		70
23 #define CFM_CCM_PDU_MAID_OFFSET		10
24 #define CFM_CCM_PDU_MEPID_OFFSET	8
25 #define CFM_CCM_PDU_SEQNR_OFFSET	4
26 #define CFM_CCM_PDU_TLV_OFFSET		74
27 #define CFM_CCM_ITU_RESERVED_SIZE	16
28 
29 struct br_cfm_common_hdr {
30 	__u8 mdlevel_version;
31 	__u8 opcode;
32 	__u8 flags;
33 	__u8 tlv_offset;
34 };
35 
36 enum br_cfm_opcodes {
37 	BR_CFM_OPCODE_CCM = 0x1,
38 };
39 
40 /* MEP domain */
41 enum br_cfm_domain {
42 	BR_CFM_PORT,
43 	BR_CFM_VLAN,
44 };
45 
46 /* MEP direction */
47 enum br_cfm_mep_direction {
48 	BR_CFM_MEP_DIRECTION_DOWN,
49 	BR_CFM_MEP_DIRECTION_UP,
50 };
51 
52 /* CCM interval supported. */
53 enum br_cfm_ccm_interval {
54 	BR_CFM_CCM_INTERVAL_NONE,
55 	BR_CFM_CCM_INTERVAL_3_3_MS,
56 	BR_CFM_CCM_INTERVAL_10_MS,
57 	BR_CFM_CCM_INTERVAL_100_MS,
58 	BR_CFM_CCM_INTERVAL_1_SEC,
59 	BR_CFM_CCM_INTERVAL_10_SEC,
60 	BR_CFM_CCM_INTERVAL_1_MIN,
61 	BR_CFM_CCM_INTERVAL_10_MIN,
62 };
63 
64 #endif
65