111 lines
4.5 KiB
C
111 lines
4.5 KiB
C
/* packet-socketcan.h
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef __PACKET_SOCKETCAN_H__
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#define __PACKET_SOCKETCAN_H__
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#include <epan/tvbuff.h>
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#include <epan/packet_info.h>
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#include <epan/proto.h>
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/* Flags for CAN FD frames. */
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#define CANFD_BRS 0x01 /* Bit Rate Switch (second bitrate for payload data) */
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#define CANFD_ESI 0x02 /* Error State Indicator of the transmitting node */
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#define CANFD_FDF 0x04 /* FD flag - if set, this is an FD frame */
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/* Structure that gets passed between dissectors. */
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struct can_info
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{
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guint32 id;
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guint32 len;
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gboolean fd;
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guint16 bus_id;
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};
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typedef struct can_info can_info_t;
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/* controller area network (CAN) kernel definitions
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* These masks are usually defined within <linux/can.h> but are not
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* available on non-Linux platforms; that's the reason for the
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* redefinitions below
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*
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* special address description flags for the CAN_ID */
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#define CAN_EFF_FLAG 0x80000000 /* EFF/SFF is set in the MSB */
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#define CAN_RTR_FLAG 0x40000000 /* remote transmission request */
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#define CAN_ERR_FLAG 0x20000000 /* error frame */
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#define CAN_FLAG_MASK (CAN_EFF_FLAG | CAN_RTR_FLAG | CAN_ERR_FLAG)
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#define CAN_EFF_MASK 0x1FFFFFFF /* extended frame format (EFF) has a 29 bit identifier */
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#define CAN_SFF_MASK 0x000007FF /* standard frame format (SFF) has a 11 bit identifier */
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#define CAN_ERR_DLC 8 /* dlc for error message frames */
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/* error class (mask) in can_id */
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#define CAN_ERR_TX_TIMEOUT 0x00000001U /* TX timeout (by netdevice driver) */
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#define CAN_ERR_LOSTARB 0x00000002U /* lost arbitration / data[0] */
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#define CAN_ERR_CTRL 0x00000004U /* controller problems / data[1] */
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#define CAN_ERR_PROT 0x00000008U /* protocol violations / data[2..3] */
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#define CAN_ERR_TRX 0x00000010U /* transceiver status / data[4] */
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#define CAN_ERR_ACK 0x00000020U /* received no ACK on transmission */
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#define CAN_ERR_BUSOFF 0x00000040U /* bus off */
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#define CAN_ERR_BUSERROR 0x00000080U /* bus error (may flood!) */
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#define CAN_ERR_RESTARTED 0x00000100U /* controller restarted */
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#define CAN_ERR_RESERVED 0x1FFFFE00U /* reserved bits */
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/* error in CAN protocol (type) / data[2] */
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#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */
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#define CAN_ERR_PROT_BIT 0x01 /* single bit error */
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#define CAN_ERR_PROT_FORM 0x02 /* frame format error */
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#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */
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#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */
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#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */
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#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */
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#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */
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#define CAN_ERR_PROT_TX 0x80 /* error occured on transmission */
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/* error in CAN protocol (location) / data[3] */
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#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */
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#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */
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#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
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#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
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#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */
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#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */
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#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
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#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
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#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
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#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */
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#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */
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#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */
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#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */
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#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */
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#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
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#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
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#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */
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#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
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#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */
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#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */
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gboolean socketcan_call_subdissectors(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, struct can_info *can_info, const gboolean use_heuristics_first);
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#endif /* __PACKET_SOCKETCAN_H__ */
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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