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File Content: `netlink.h`

/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
/*
 * linux/can/netlink.h
 *
 * Definitions for the CAN netlink interface
 *
 * Copyright (c) 2009 Wolfgang Grandegger <wg@grandegger.com>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the version 2 of the GNU General Public License
 * as published by the Free Software Foundation
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 */

#ifndef _CAN_NETLINK_H
#define _CAN_NETLINK_H

#include <linux/types.h>

/*
 * CAN bit-timing parameters
 *
 * For further information, please read chapter "8 BIT TIMING
 * REQUIREMENTS" of the "Bosch CAN Specification version 2.0"
 * at http://www.semiconductors.bosch.de/pdf/can2spec.pdf.
 */
struct can_bittiming {
	__u32 bitrate;		/* Bit-rate in bits/second */
	__u32 sample_point;	/* Sample point in one-tenth of a percent */
	__u32 tq;		/* Time quanta (TQ) in nanoseconds */
	__u32 prop_seg;		/* Propagation segment in TQs */
	__u32 phase_seg1;	/* Phase buffer segment 1 in TQs */
	__u32 phase_seg2;	/* Phase buffer segment 2 in TQs */
	__u32 sjw;		/* Synchronisation jump width in TQs */
	__u32 brp;		/* Bit-rate prescaler */
};

/*
 * CAN hardware-dependent bit-timing constant
 *
 * Used for calculating and checking bit-timing parameters
 */
struct can_bittiming_const {
	char name[16];		/* Name of the CAN controller hardware */
	__u32 tseg1_min;	/* Time segment 1 = prop_seg + phase_seg1 */
	__u32 tseg1_max;
	__u32 tseg2_min;	/* Time segment 2 = phase_seg2 */
	__u32 tseg2_max;
	__u32 sjw_max;		/* Synchronisation jump width */
	__u32 brp_min;		/* Bit-rate prescaler */
	__u32 brp_max;
	__u32 brp_inc;
};

/*
 * CAN clock parameters
 */
struct can_clock {
	__u32 freq;		/* CAN system clock frequency in Hz */
};

/*
 * CAN operational and error states
 */
enum can_state {
	CAN_STATE_ERROR_ACTIVE = 0,	/* RX/TX error count < 96 */
	CAN_STATE_ERROR_WARNING,	/* RX/TX error count < 128 */
	CAN_STATE_ERROR_PASSIVE,	/* RX/TX error count < 256 */
	CAN_STATE_BUS_OFF,		/* RX/TX error count >= 256 */
	CAN_STATE_STOPPED,		/* Device is stopped */
	CAN_STATE_SLEEPING,		/* Device is sleeping */
	CAN_STATE_MAX
};

/*
 * CAN bus error counters
 */
struct can_berr_counter {
	__u16 txerr;
	__u16 rxerr;
};

/*
 * CAN controller mode
 */
struct can_ctrlmode {
	__u32 mask;
	__u32 flags;
};

#define CAN_CTRLMODE_LOOPBACK		0x01	/* Loopback mode */
#define CAN_CTRLMODE_LISTENONLY		0x02	/* Listen-only mode */
#define CAN_CTRLMODE_3_SAMPLES		0x04	/* Triple sampling mode */
#define CAN_CTRLMODE_ONE_SHOT		0x08	/* One-Shot mode */
#define CAN_CTRLMODE_BERR_REPORTING	0x10	/* Bus-error reporting */
#define CAN_CTRLMODE_FD			0x20	/* CAN FD mode */
#define CAN_CTRLMODE_PRESUME_ACK	0x40	/* Ignore missing CAN ACKs */
#define CAN_CTRLMODE_FD_NON_ISO		0x80	/* CAN FD in non-ISO mode */
#define CAN_CTRLMODE_CC_LEN8_DLC	0x100	/* Classic CAN DLC option */

/*
 * CAN device statistics
 */
struct can_device_stats {
	__u32 bus_error;	/* Bus errors */
	__u32 error_warning;	/* Changes to error warning state */
	__u32 error_passive;	/* Changes to error passive state */
	__u32 bus_off;		/* Changes to bus off state */
	__u32 arbitration_lost; /* Arbitration lost errors */
	__u32 restarts;		/* CAN controller re-starts */
};

/*
 * CAN netlink interface
 */
enum {
	IFLA_CAN_UNSPEC,
	IFLA_CAN_BITTIMING,
	IFLA_CAN_BITTIMING_CONST,
	IFLA_CAN_CLOCK,
	IFLA_CAN_STATE,
	IFLA_CAN_CTRLMODE,
	IFLA_CAN_RESTART_MS,
	IFLA_CAN_RESTART,
	IFLA_CAN_BERR_COUNTER,
	IFLA_CAN_DATA_BITTIMING,
	IFLA_CAN_DATA_BITTIMING_CONST,
	IFLA_CAN_TERMINATION,
	IFLA_CAN_TERMINATION_CONST,
	IFLA_CAN_BITRATE_CONST,
	IFLA_CAN_DATA_BITRATE_CONST,
	IFLA_CAN_BITRATE_MAX,
	__IFLA_CAN_MAX
};

#define IFLA_CAN_MAX	(__IFLA_CAN_MAX - 1)

/* u16 termination range: 1..65535 Ohms */
#define CAN_TERMINATION_DISABLED 0

#endif /* !_UAPI_CAN_NETLINK_H */
Name	Size	Permission
bcm.h	4116 bytes	0644
error.h	6654 bytes	0644
gw.h	8026 bytes	0644
isotp.h	7427 bytes	0644
j1939.h	2403 bytes	0644
netlink.h	4061 bytes	0644
raw.h	2895 bytes	0644
vxcan.h	232 bytes	0644
File Content: netlink.h

File Content: `netlink.h`
