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 };
82
83 enum {
84 J1939_EE_INFO_NONE,
85 J1939_EE_INFO_TX_ABORT,
86 };
87
88 struct j1939_filter {
89 name_t name;
90 name_t name_mask;
91 pgn_t pgn;
92 pgn_t pgn_mask;
93 __u8 addr;
94 __u8 addr_mask;
95 };
96
97 #define J1939_FILTER_MAX 512 /* maximum number of j1939_filter set via setsockopt() */
98
99 #endif /* !_UAPI_CAN_J1939_H_ */