include/uapi/linux/can/j1939.h

   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_ */