LXR linux/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 */
  38typedef __u32 pgn_t;
  39
  40/* J1939 Priority
  41 *
  42 * bit 0-2      : Priority (P)
  43 * bit 3-7      : set to zero
  44 */
  45typedef __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 */
  60typedef __u64 name_t;
  61
  62/* J1939 socket options */
  63#define SOL_CAN_J1939 (SOL_CAN_BASE + CAN_J1939)
  64enum {
  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
  71enum {
  72        SCM_J1939_DEST_ADDR = 1,
  73        SCM_J1939_DEST_NAME = 2,
  74        SCM_J1939_PRIO = 3,
  75        SCM_J1939_ERRQUEUE = 4,
  76};
  77
  78enum {
  79        J1939_NLA_PAD,
  80        J1939_NLA_BYTES_ACKED,
  81};
  82
  83enum {
  84        J1939_EE_INFO_NONE,
  85        J1939_EE_INFO_TX_ABORT,
  86};
  87
  88struct 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_ */
 100