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/* packet-socketcan.h
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* SPDX-License-Identifier: GPL-2.0-or-later
*/
#ifndef __PACKET_SOCKETCAN_H__
#define __PACKET_SOCKETCAN_H__
#include <epan/tvbuff.h>
#include <epan/packet_info.h>
#include <epan/proto.h>
/* Flags for CAN FD frames. */
#define CANFD_BRS 0x01 /* Bit Rate Switch (second bitrate for payload data) */
#define CANFD_ESI 0x02 /* Error State Indicator of the transmitting node */
#define CANFD_FDF 0x04 /* FD flag - if set, this is an FD frame */
/* Structure that gets passed between dissectors. */
struct can_info
{
guint32 id;
guint32 len;
gboolean fd;
guint16 bus_id;
};
typedef struct can_info can_info_t;
/* controller area network (CAN) kernel definitions
* These masks are usually defined within <linux/can.h> but are not
* available on non-Linux platforms; that's the reason for the
* redefinitions below
*
* special address description flags for the CAN_ID */
#define CAN_EFF_FLAG 0x80000000 /* EFF/SFF is set in the MSB */
#define CAN_RTR_FLAG 0x40000000 /* remote transmission request */
#define CAN_ERR_FLAG 0x20000000 /* error frame */
#define CAN_FLAG_MASK (CAN_EFF_FLAG | CAN_RTR_FLAG | CAN_ERR_FLAG)
#define CAN_EFF_MASK 0x1FFFFFFF /* extended frame format (EFF) has a 29 bit identifier */
#define CAN_SFF_MASK 0x000007FF /* standard frame format (SFF) has a 11 bit identifier */
#define CAN_ERR_DLC 8 /* dlc for error message frames */
/* error class (mask) in can_id */
#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */
#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */
#define CAN_ERR_CTRL 0x00000004U /* controller problems / data[1] */
#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */
#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */
#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */
#define CAN_ERR_BUSOFF 0x00000040U /* bus off */
#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
#define CAN_ERR_RESERVED 0x1FFFFE00U /* reserved bits */
gboolean socketcan_call_subdissectors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, struct can_info *can_info, const gboolean use_heuristics_first);
#endif /* __PACKET_SOCKETCAN_H__ */
/*
* Editor modelines - https://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 8
* tab-width: 8
* indent-tabs-mode: t
* End:
*
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
* :indentSize=8:tabSize=8:noTabs=false:
*/
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