1 /* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
2 /*
3  * j1939.h
4  *
5  * Copyright (c) 2010-2011 EIA Electronics
6  *
7  * This program is free software; you can redistribute it and/or modify
8  * it under the terms of the GNU General Public License version 2 as
9  * published by the Free Software Foundation.
10  */
11 
12 #ifndef _UAPI_CAN_J1939_H_
13 #define _UAPI_CAN_J1939_H_
14 
15 #include <linux/types.h>
16 #include <linux/socket.h>
17 #include <linux/can.h>
18 
19 #define J1939_MAX_UNICAST_ADDR 0xfd
20 #define J1939_IDLE_ADDR 0xfe
21 #define J1939_NO_ADDR 0xff		/* == broadcast or no addr */
22 #define J1939_NO_NAME 0
23 #define J1939_PGN_REQUEST 0x0ea00		/* Request PG */
24 #define J1939_PGN_ADDRESS_CLAIMED 0x0ee00	/* Address Claimed */
25 #define J1939_PGN_ADDRESS_COMMANDED 0x0fed8	/* Commanded Address */
26 #define J1939_PGN_PDU1_MAX 0x3ff00
27 #define J1939_PGN_MAX 0x3ffff
28 #define J1939_NO_PGN 0x40000
29 
30 /* J1939 Parameter Group Number
31  *
32  * bit 0-7	: PDU Specific (PS)
33  * bit 8-15	: PDU Format (PF)
34  * bit 16	: Data Page (DP)
35  * bit 17	: Reserved (R)
36  * bit 19-31	: set to zero
37  */
38 typedef __u32 pgn_t;
39 
40 /* J1939 Priority
41  *
42  * bit 0-2	: Priority (P)
43  * bit 3-7	: set to zero
44  */
45 typedef __u8 priority_t;
46 
47 /* J1939 NAME
48  *
49  * bit 0-20	: Identity Number
50  * bit 21-31	: Manufacturer Code
51  * bit 32-34	: ECU Instance
52  * bit 35-39	: Function Instance
53  * bit 40-47	: Function
54  * bit 48	: Reserved
55  * bit 49-55	: Vehicle System
56  * bit 56-59	: Vehicle System Instance
57  * bit 60-62	: Industry Group
58  * bit 63	: Arbitrary Address Capable
59  */
60 typedef __u64 name_t;
61 
62 /* J1939 socket options */
63 #define SOL_CAN_J1939 (SOL_CAN_BASE + CAN_J1939)
64 enum {
65 	SO_J1939_FILTER = 1,	/* set filters */
66 	SO_J1939_PROMISC = 2,	/* set/clr promiscuous mode */
67 	SO_J1939_SEND_PRIO = 3,
68 	SO_J1939_ERRQUEUE = 4,
69 };
70 
71 enum {
72 	SCM_J1939_DEST_ADDR = 1,
73 	SCM_J1939_DEST_NAME = 2,
74 	SCM_J1939_PRIO = 3,
75 	SCM_J1939_ERRQUEUE = 4,
76 };
77 
78 enum {
79 	J1939_NLA_PAD,
80 	J1939_NLA_BYTES_ACKED,
81 	J1939_NLA_TOTAL_SIZE,
82 	J1939_NLA_PGN,
83 	J1939_NLA_SRC_NAME,
84 	J1939_NLA_DEST_NAME,
85 	J1939_NLA_SRC_ADDR,
86 	J1939_NLA_DEST_ADDR,
87 };
88 
89 enum {
90 	J1939_EE_INFO_NONE,
91 	J1939_EE_INFO_TX_ABORT,
92 	J1939_EE_INFO_RX_RTS,
93 	J1939_EE_INFO_RX_DPO,
94 	J1939_EE_INFO_RX_ABORT,
95 };
96 
97 struct j1939_filter {
98 	name_t name;
99 	name_t name_mask;
100 	pgn_t pgn;
101 	pgn_t pgn_mask;
102 	__u8 addr;
103 	__u8 addr_mask;
104 };
105 
106 #define J1939_FILTER_MAX 512 /* maximum number of j1939_filter set via setsockopt() */
107 
108 #endif /* !_UAPI_CAN_J1939_H_ */
109