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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can.h
*
* Definitions for CAN network layer (socket addr / CAN frame / CAN filter)
*
* Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Urs Thuermann <urs.thuermann@volkswagen.de>
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_H
#define _UAPI_CAN_H
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/stddef.h> /* for offsetof */
/* controller area network (CAN) kernel definitions */
/* special address description flags for the CAN_ID */
#define CAN_EFF_FLAG 0x80000000U /* EFF/SFF is set in the MSB */
#define CAN_RTR_FLAG 0x40000000U /* remote transmission request */
#define CAN_ERR_FLAG 0x20000000U /* error message frame */
/* valid bits in CAN ID for frame formats */
#define CAN_SFF_MASK 0x000007FFU /* standard frame format (SFF) */
#define CAN_EFF_MASK 0x1FFFFFFFU /* extended frame format (EFF) */
#define CAN_ERR_MASK 0x1FFFFFFFU /* omit EFF, RTR, ERR flags */
#define CANXL_PRIO_MASK CAN_SFF_MASK /* 11 bit priority mask */
/*
* Controller Area Network Identifier structure
*
* bit 0-28 : CAN identifier (11/29 bit)
* bit 29 : error message frame flag (0 = data frame, 1 = error message)
* bit 30 : remote transmission request flag (1 = rtr frame)
* bit 31 : frame format flag (0 = standard 11 bit, 1 = extended 29 bit)
*/
typedef __u32 canid_t;
#define CAN_SFF_ID_BITS 11
#define CAN_EFF_ID_BITS 29
#define CANXL_PRIO_BITS CAN_SFF_ID_BITS
/*
* Controller Area Network Error Message Frame Mask structure
*
* bit 0-28 : error class mask (see include/uapi/linux/can/error.h)
* bit 29-31 : set to zero
*/
typedef __u32 can_err_mask_t;
/* CAN payload length and DLC definitions according to ISO 11898-1 */
#define CAN_MAX_DLC 8
#define CAN_MAX_RAW_DLC 15
#define CAN_MAX_DLEN 8
/* CAN FD payload length and DLC definitions according to ISO 11898-7 */
#define CANFD_MAX_DLC 15
#define CANFD_MAX_DLEN 64
/*
* CAN XL payload length and DLC definitions according to ISO 11898-1
* CAN XL DLC ranges from 0 .. 2047 => data length from 1 .. 2048 byte
*/
#define CANXL_MIN_DLC 0
#define CANXL_MAX_DLC 2047
#define CANXL_MAX_DLC_MASK 0x07FF
#define CANXL_MIN_DLEN 1
#define CANXL_MAX_DLEN 2048
/**
* struct can_frame - Classical CAN frame structure (aka CAN 2.0B)
* @can_id: CAN ID of the frame and CAN_*_FLAG flags, see canid_t definition
* @len: CAN frame payload length in byte (0 .. 8)
* @can_dlc: deprecated name for CAN frame payload length in byte (0 .. 8)
* @__pad: padding
* @__res0: reserved / padding
* @len8_dlc: optional DLC value (9 .. 15) at 8 byte payload length
* len8_dlc contains values from 9 .. 15 when the payload length is
* 8 bytes but the DLC value (see ISO 11898-1) is greater then 8.
* CAN_CTRLMODE_CC_LEN8_DLC flag has to be enabled in CAN driver.
* @data: CAN frame payload (up to 8 byte)
*/
struct can_frame {
canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
union {
/* CAN frame payload length in byte (0 .. CAN_MAX_DLEN)
* was previously named can_dlc so we need to carry that
* name for legacy support
*/
__u8 len;
__u8 can_dlc; /* deprecated */
} __attribute__((packed)); /* disable padding added in some ABIs */
__u8 __pad; /* padding */
__u8 __res0; /* reserved / padding */
__u8 len8_dlc; /* optional DLC for 8 byte payload length (9 .. 15) */
__u8 data[CAN_MAX_DLEN] __attribute__((aligned(8)));
};
/*
* defined bits for canfd_frame.flags
*
* The use of struct canfd_frame implies the FD Frame (FDF) bit to
* be set in the CAN frame bitstream on the wire. The FDF bit switch turns
* the CAN controllers bitstream processor into the CAN FD mode which creates
* two new options within the CAN FD frame specification:
*
* Bit Rate Switch - to indicate a second bitrate is/was used for the payload
* Error State Indicator - represents the error state of the transmitting node
*
* As the CANFD_ESI bit is internally generated by the transmitting CAN
* controller only the CANFD_BRS bit is relevant for real CAN controllers when
* building a CAN FD frame for transmission. Setting the CANFD_ESI bit can make
* sense for virtual CAN interfaces to test applications with echoed frames.
*
* The struct can_frame and struct canfd_frame intentionally share the same
* layout to be able to write CAN frame content into a CAN FD frame structure.
* When this is done the former differentiation via CAN_MTU / CANFD_MTU gets
* lost. CANFD_FDF allows programmers to mark CAN FD frames in the case of
* using struct canfd_frame for mixed CAN / CAN FD content (dual use).
* Since the introduction of CAN XL the CANFD_FDF flag is set in all CAN FD
* frame structures provided by the CAN subsystem of the Linux kernel.
*/
#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 /* mark CAN FD for dual use of struct canfd_frame */
/**
* struct canfd_frame - CAN flexible data rate frame structure
* @can_id: CAN ID of the frame and CAN_*_FLAG flags, see canid_t definition
* @len: frame payload length in byte (0 .. CANFD_MAX_DLEN)
* @flags: additional flags for CAN FD
* @__res0: reserved / padding
* @__res1: reserved / padding
* @data: CAN FD frame payload (up to CANFD_MAX_DLEN byte)
*/
struct canfd_frame {
canid_t can_id; /* 32 bit CAN_ID + EFF/RTR/ERR flags */
__u8 len; /* frame payload length in byte */
__u8 flags; /* additional flags for CAN FD */
__u8 __res0; /* reserved / padding */
__u8 __res1; /* reserved / padding */
__u8 data[CANFD_MAX_DLEN] __attribute__((aligned(8)));
};
/*
* defined bits for canxl_frame.flags
*
* The canxl_frame.flags element contains two bits CANXL_XLF and CANXL_SEC
* and shares the relative position of the struct can[fd]_frame.len element.
* The CANXL_XLF bit ALWAYS needs to be set to indicate a valid CAN XL frame.
* As a side effect setting this bit intentionally breaks the length checks
* for Classical CAN and CAN FD frames.
*
* Undefined bits in canxl_frame.flags are reserved and shall be set to zero.
*/
#define CANXL_XLF 0x80 /* mandatory CAN XL frame flag (must always be set!) */
#define CANXL_SEC 0x01 /* Simple Extended Content (security/segmentation) */
/* the 8-bit VCID is optionally placed in the canxl_frame.prio element */
#define CANXL_VCID_OFFSET 16 /* bit offset of VCID in prio element */
#define CANXL_VCID_VAL_MASK 0xFFUL /* VCID is an 8-bit value */
#define CANXL_VCID_MASK (CANXL_VCID_VAL_MASK << CANXL_VCID_OFFSET)
/**
* struct canxl_frame - CAN with e'X'tended frame 'L'ength frame structure
* @prio: 11 bit arbitration priority with zero'ed CAN_*_FLAG flags / VCID
* @flags: additional flags for CAN XL
* @sdt: SDU (service data unit) type
* @len: frame payload length in byte (CANXL_MIN_DLEN .. CANXL_MAX_DLEN)
* @af: acceptance field
* @data: CAN XL frame payload (CANXL_MIN_DLEN .. CANXL_MAX_DLEN byte)
*
* @prio shares the same position as @can_id from struct can[fd]_frame.
*/
struct canxl_frame {
canid_t prio; /* 11 bit priority for arbitration / 8 bit VCID */
__u8 flags; /* additional flags for CAN XL */
__u8 sdt; /* SDU (service data unit) type */
__u16 len; /* frame payload length in byte */
__u32 af; /* acceptance field */
__u8 data[CANXL_MAX_DLEN];
};
#define CAN_MTU (sizeof(struct can_frame))
#define CANFD_MTU (sizeof(struct canfd_frame))
#define CANXL_MTU (sizeof(struct canxl_frame))
#define CANXL_HDR_SIZE (offsetof(struct canxl_frame, data))
#define CANXL_MIN_MTU (CANXL_HDR_SIZE + 64)
#define CANXL_MAX_MTU CANXL_MTU
/* particular protocols of the protocol family PF_CAN */
#define CAN_RAW 1 /* RAW sockets */
#define CAN_BCM 2 /* Broadcast Manager */
#define CAN_TP16 3 /* VAG Transport Protocol v1.6 */
#define CAN_TP20 4 /* VAG Transport Protocol v2.0 */
#define CAN_MCNET 5 /* Bosch MCNet */
#define CAN_ISOTP 6 /* ISO 15765-2 Transport Protocol */
#define CAN_J1939 7 /* SAE J1939 */
#define CAN_NPROTO 8
#define SOL_CAN_BASE 100
/*
* This typedef was introduced in Linux v3.1-rc2
* (commit 6602a4b net: Make userland include of netlink.h more sane)
* in <linux/socket.h>. It must be duplicated here to make the CAN
* headers self-contained.
*/
typedef unsigned short __kernel_sa_family_t;
/**
* struct sockaddr_can - the sockaddr structure for CAN sockets
* @can_family: address family number AF_CAN.
* @can_ifindex: CAN network interface index.
* @can_addr: protocol specific address information
*/
struct sockaddr_can {
__kernel_sa_family_t can_family;
int can_ifindex;
union {
/* transport protocol class address information (e.g. ISOTP) */
struct { canid_t rx_id, tx_id; } tp;
/* J1939 address information */
struct {
/* 8 byte name when using dynamic addressing */
__u64 name;
/* pgn:
* 8 bit: PS in PDU2 case, else 0
* 8 bit: PF
* 1 bit: DP
* 1 bit: reserved
*/
__u32 pgn;
/* 1 byte address */
__u8 addr;
} j1939;
/* reserved for future CAN protocols address information */
} can_addr;
};
/**
* struct can_filter - CAN ID based filter in can_register().
* @can_id: relevant bits of CAN ID which are not masked out.
* @can_mask: CAN mask (see description)
*
* Description:
* A filter matches, when
*
* <received_can_id> & mask == can_id & mask
*
* The filter can be inverted (CAN_INV_FILTER bit set in can_id) or it can
* filter for error message frames (CAN_ERR_FLAG bit set in mask).
*/
struct can_filter {
canid_t can_id;
canid_t can_mask;
};
#define CAN_INV_FILTER 0x20000000U /* to be set in can_filter.can_id */
#endif /* !_UAPI_CAN_H */

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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can/bcm.h
*
* Definitions for CAN Broadcast Manager (BCM)
*
* Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_BCM_H
#define _UAPI_CAN_BCM_H
#include <linux/types.h>
#include <linux/can.h>
struct bcm_timeval {
long tv_sec;
long tv_usec;
};
/**
* struct bcm_msg_head - head of messages to/from the broadcast manager
* @opcode: opcode, see enum below.
* @flags: special flags, see below.
* @count: number of frames to send before changing interval.
* @ival1: interval for the first @count frames.
* @ival2: interval for the following frames.
* @can_id: CAN ID of frames to be sent or received.
* @nframes: number of frames appended to the message head.
* @frames: array of CAN frames.
*/
struct bcm_msg_head {
__u32 opcode;
__u32 flags;
__u32 count;
struct bcm_timeval ival1, ival2;
canid_t can_id;
__u32 nframes;
struct can_frame frames[];
};
enum {
TX_SETUP = 1, /* create (cyclic) transmission task */
TX_DELETE, /* remove (cyclic) transmission task */
TX_READ, /* read properties of (cyclic) transmission task */
TX_SEND, /* send one CAN frame */
RX_SETUP, /* create RX content filter subscription */
RX_DELETE, /* remove RX content filter subscription */
RX_READ, /* read properties of RX content filter subscription */
TX_STATUS, /* reply to TX_READ request */
TX_EXPIRED, /* notification on performed transmissions (count=0) */
RX_STATUS, /* reply to RX_READ request */
RX_TIMEOUT, /* cyclic message is absent */
RX_CHANGED /* updated CAN frame (detected content change) */
};
#define SETTIMER 0x0001
#define STARTTIMER 0x0002
#define TX_COUNTEVT 0x0004
#define TX_ANNOUNCE 0x0008
#define TX_CP_CAN_ID 0x0010
#define RX_FILTER_ID 0x0020
#define RX_CHECK_DLC 0x0040
#define RX_NO_AUTOTIMER 0x0080
#define RX_ANNOUNCE_RESUME 0x0100
#define TX_RESET_MULTI_IDX 0x0200
#define RX_RTR_FRAME 0x0400
#define CAN_FD_FRAME 0x0800
#endif /* !_UAPI_CAN_BCM_H */

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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can/error.h
*
* Definitions of the CAN error messages to be filtered and passed to the user.
*
* Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_ERROR_H
#define _UAPI_CAN_ERROR_H
#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_CRTL 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_CNT 0x00000200U /* TX error counter / data[6] */
/* RX error counter / data[7] */
/* arbitration lost in bit ... / data[0] */
#define CAN_ERR_LOSTARB_UNSPEC 0x00 /* unspecified */
/* else bit number in bitstream */
/* error status of CAN-controller / data[1] */
#define CAN_ERR_CRTL_UNSPEC 0x00 /* unspecified */
#define CAN_ERR_CRTL_RX_OVERFLOW 0x01 /* RX buffer overflow */
#define CAN_ERR_CRTL_TX_OVERFLOW 0x02 /* TX buffer overflow */
#define CAN_ERR_CRTL_RX_WARNING 0x04 /* reached warning level for RX errors */
#define CAN_ERR_CRTL_TX_WARNING 0x08 /* reached warning level for TX errors */
#define CAN_ERR_CRTL_RX_PASSIVE 0x10 /* reached error passive status RX */
#define CAN_ERR_CRTL_TX_PASSIVE 0x20 /* reached error passive status TX */
/* (at least one error counter exceeds */
/* the protocol-defined level of 127) */
#define CAN_ERR_CRTL_ACTIVE 0x40 /* recovered to error active state */
/* error in CAN protocol (type) / data[2] */
#define CAN_ERR_PROT_UNSPEC 0x00 /* unspecified */
#define CAN_ERR_PROT_BIT 0x01 /* single bit error */
#define CAN_ERR_PROT_FORM 0x02 /* frame format error */
#define CAN_ERR_PROT_STUFF 0x04 /* bit stuffing error */
#define CAN_ERR_PROT_BIT0 0x08 /* unable to send dominant bit */
#define CAN_ERR_PROT_BIT1 0x10 /* unable to send recessive bit */
#define CAN_ERR_PROT_OVERLOAD 0x20 /* bus overload */
#define CAN_ERR_PROT_ACTIVE 0x40 /* active error announcement */
#define CAN_ERR_PROT_TX 0x80 /* error occurred on transmission */
/* error in CAN protocol (location) / data[3] */
#define CAN_ERR_PROT_LOC_UNSPEC 0x00 /* unspecified */
#define CAN_ERR_PROT_LOC_SOF 0x03 /* start of frame */
#define CAN_ERR_PROT_LOC_ID28_21 0x02 /* ID bits 28 - 21 (SFF: 10 - 3) */
#define CAN_ERR_PROT_LOC_ID20_18 0x06 /* ID bits 20 - 18 (SFF: 2 - 0 )*/
#define CAN_ERR_PROT_LOC_SRTR 0x04 /* substitute RTR (SFF: RTR) */
#define CAN_ERR_PROT_LOC_IDE 0x05 /* identifier extension */
#define CAN_ERR_PROT_LOC_ID17_13 0x07 /* ID bits 17-13 */
#define CAN_ERR_PROT_LOC_ID12_05 0x0F /* ID bits 12-5 */
#define CAN_ERR_PROT_LOC_ID04_00 0x0E /* ID bits 4-0 */
#define CAN_ERR_PROT_LOC_RTR 0x0C /* RTR */
#define CAN_ERR_PROT_LOC_RES1 0x0D /* reserved bit 1 */
#define CAN_ERR_PROT_LOC_RES0 0x09 /* reserved bit 0 */
#define CAN_ERR_PROT_LOC_DLC 0x0B /* data length code */
#define CAN_ERR_PROT_LOC_DATA 0x0A /* data section */
#define CAN_ERR_PROT_LOC_CRC_SEQ 0x08 /* CRC sequence */
#define CAN_ERR_PROT_LOC_CRC_DEL 0x18 /* CRC delimiter */
#define CAN_ERR_PROT_LOC_ACK 0x19 /* ACK slot */
#define CAN_ERR_PROT_LOC_ACK_DEL 0x1B /* ACK delimiter */
#define CAN_ERR_PROT_LOC_EOF 0x1A /* end of frame */
#define CAN_ERR_PROT_LOC_INTERM 0x12 /* intermission */
/* error status of CAN-transceiver / data[4] */
/* CANH CANL */
#define CAN_ERR_TRX_UNSPEC 0x00 /* 0000 0000 */
#define CAN_ERR_TRX_CANH_NO_WIRE 0x04 /* 0000 0100 */
#define CAN_ERR_TRX_CANH_SHORT_TO_BAT 0x05 /* 0000 0101 */
#define CAN_ERR_TRX_CANH_SHORT_TO_VCC 0x06 /* 0000 0110 */
#define CAN_ERR_TRX_CANH_SHORT_TO_GND 0x07 /* 0000 0111 */
#define CAN_ERR_TRX_CANL_NO_WIRE 0x40 /* 0100 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_BAT 0x50 /* 0101 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_VCC 0x60 /* 0110 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_GND 0x70 /* 0111 0000 */
#define CAN_ERR_TRX_CANL_SHORT_TO_CANH 0x80 /* 1000 0000 */
/* data[5] is reserved (do not use) */
/* TX error counter / data[6] */
/* RX error counter / data[7] */
/* CAN state thresholds
*
* Error counter Error state
* -----------------------------------
* 0 - 95 Error-active
* 96 - 127 Error-warning
* 128 - 255 Error-passive
* 256 and greater Bus-off
*/
#define CAN_ERROR_WARNING_THRESHOLD 96
#define CAN_ERROR_PASSIVE_THRESHOLD 128
#define CAN_BUS_OFF_THRESHOLD 256
#endif /* _UAPI_CAN_ERROR_H */

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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can/gw.h
*
* Definitions for CAN frame Gateway/Router/Bridge
*
* Author: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Copyright (c) 2011 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_GW_H
#define _UAPI_CAN_GW_H
#include <linux/types.h>
#include <linux/can.h>
struct rtcanmsg {
__u8 can_family;
__u8 gwtype;
__u16 flags;
};
/* CAN gateway types */
enum {
CGW_TYPE_UNSPEC,
CGW_TYPE_CAN_CAN, /* CAN->CAN routing */
__CGW_TYPE_MAX
};
#define CGW_TYPE_MAX (__CGW_TYPE_MAX - 1)
/* CAN rtnetlink attribute definitions */
enum {
CGW_UNSPEC,
CGW_MOD_AND, /* CAN frame modification binary AND */
CGW_MOD_OR, /* CAN frame modification binary OR */
CGW_MOD_XOR, /* CAN frame modification binary XOR */
CGW_MOD_SET, /* CAN frame modification set alternate values */
CGW_CS_XOR, /* set data[] XOR checksum into data[index] */
CGW_CS_CRC8, /* set data[] CRC8 checksum into data[index] */
CGW_HANDLED, /* number of handled CAN frames */
CGW_DROPPED, /* number of dropped CAN frames */
CGW_SRC_IF, /* ifindex of source network interface */
CGW_DST_IF, /* ifindex of destination network interface */
CGW_FILTER, /* specify struct can_filter on source CAN device */
CGW_DELETED, /* number of deleted CAN frames (see max_hops param) */
CGW_LIM_HOPS, /* limit the number of hops of this specific rule */
CGW_MOD_UID, /* user defined identifier for modification updates */
CGW_FDMOD_AND, /* CAN FD frame modification binary AND */
CGW_FDMOD_OR, /* CAN FD frame modification binary OR */
CGW_FDMOD_XOR, /* CAN FD frame modification binary XOR */
CGW_FDMOD_SET, /* CAN FD frame modification set alternate values */
__CGW_MAX
};
#define CGW_MAX (__CGW_MAX - 1)
#define CGW_FLAGS_CAN_ECHO 0x01
#define CGW_FLAGS_CAN_SRC_TSTAMP 0x02
#define CGW_FLAGS_CAN_IIF_TX_OK 0x04
#define CGW_FLAGS_CAN_FD 0x08
#define CGW_MOD_FUNCS 4 /* AND OR XOR SET */
/* CAN frame elements that are affected by curr. 3 CAN frame modifications */
#define CGW_MOD_ID 0x01
#define CGW_MOD_DLC 0x02 /* Classical CAN data length code */
#define CGW_MOD_LEN CGW_MOD_DLC /* CAN FD (plain) data length */
#define CGW_MOD_DATA 0x04
#define CGW_MOD_FLAGS 0x08 /* CAN FD flags */
#define CGW_FRAME_MODS 4 /* ID DLC/LEN DATA FLAGS */
#define MAX_MODFUNCTIONS (CGW_MOD_FUNCS * CGW_FRAME_MODS)
struct cgw_frame_mod {
struct can_frame cf;
__u8 modtype;
} __attribute__((packed));
struct cgw_fdframe_mod {
struct canfd_frame cf;
__u8 modtype;
} __attribute__((packed));
#define CGW_MODATTR_LEN sizeof(struct cgw_frame_mod)
#define CGW_FDMODATTR_LEN sizeof(struct cgw_fdframe_mod)
struct cgw_csum_xor {
__s8 from_idx;
__s8 to_idx;
__s8 result_idx;
__u8 init_xor_val;
} __attribute__((packed));
struct cgw_csum_crc8 {
__s8 from_idx;
__s8 to_idx;
__s8 result_idx;
__u8 init_crc_val;
__u8 final_xor_val;
__u8 crctab[256];
__u8 profile;
__u8 profile_data[20];
} __attribute__((packed));
/* length of checksum operation parameters. idx = index in CAN frame data[] */
#define CGW_CS_XOR_LEN sizeof(struct cgw_csum_xor)
#define CGW_CS_CRC8_LEN sizeof(struct cgw_csum_crc8)
/* CRC8 profiles (compute CRC for additional data elements - see below) */
enum {
CGW_CRC8PRF_UNSPEC,
CGW_CRC8PRF_1U8, /* compute one additional u8 value */
CGW_CRC8PRF_16U8, /* u8 value table indexed by data[1] & 0xF */
CGW_CRC8PRF_SFFID_XOR, /* (can_id & 0xFF) ^ (can_id >> 8 & 0xFF) */
__CGW_CRC8PRF_MAX
};
#define CGW_CRC8PRF_MAX (__CGW_CRC8PRF_MAX - 1)
/*
* CAN rtnetlink attribute contents in detail
*
* CGW_XXX_IF (length 4 bytes):
* Sets an interface index for source/destination network interfaces.
* For the CAN->CAN gwtype the indices of _two_ CAN interfaces are mandatory.
*
* CGW_FILTER (length 8 bytes):
* Sets a CAN receive filter for the gateway job specified by the
* struct can_filter described in include/linux/can.h
*
* CGW_MOD_(AND|OR|XOR|SET) (length 17 bytes):
* Specifies a modification that's done to a received CAN frame before it is
* send out to the destination interface.
*
* <struct can_frame> data used as operator
* <u8> affected CAN frame elements
*
* CGW_LIM_HOPS (length 1 byte):
* Limit the number of hops of this specific rule. Usually the received CAN
* frame can be processed as much as 'max_hops' times (which is given at module
* load time of the can-gw module). This value is used to reduce the number of
* possible hops for this gateway rule to a value smaller then max_hops.
*
* CGW_MOD_UID (length 4 bytes):
* Optional non-zero user defined routing job identifier to alter existing
* modification settings at runtime.
*
* CGW_CS_XOR (length 4 bytes):
* Set a simple XOR checksum starting with an initial value into
* data[result-idx] using data[start-idx] .. data[end-idx]
*
* The XOR checksum is calculated like this:
*
* xor = init_xor_val
*
* for (i = from_idx .. to_idx)
* xor ^= can_frame.data[i]
*
* can_frame.data[ result_idx ] = xor
*
* CGW_CS_CRC8 (length 282 bytes):
* Set a CRC8 value into data[result-idx] using a given 256 byte CRC8 table,
* a given initial value and a defined input data[start-idx] .. data[end-idx].
* Finally the result value is XOR'ed with the final_xor_val.
*
* The CRC8 checksum is calculated like this:
*
* crc = init_crc_val
*
* for (i = from_idx .. to_idx)
* crc = crctab[ crc ^ can_frame.data[i] ]
*
* can_frame.data[ result_idx ] = crc ^ final_xor_val
*
* The calculated CRC may contain additional source data elements that can be
* defined in the handling of 'checksum profiles' e.g. shown in AUTOSAR specs
* like http://www.autosar.org/download/R4.0/AUTOSAR_SWS_E2ELibrary.pdf
* E.g. the profile_data[] may contain additional u8 values (called DATA_IDs)
* that are used depending on counter values inside the CAN frame data[].
* So far only three profiles have been implemented for illustration.
*
* Remark: In general the attribute data is a linear buffer.
* Beware of sending unpacked or aligned structs!
*/
#endif /* !_UAPI_CAN_GW_H */

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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can/isotp.h
*
* Definitions for isotp CAN sockets (ISO 15765-2:2016)
*
* Copyright (c) 2020 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_ISOTP_H
#define _UAPI_CAN_ISOTP_H
#include <linux/types.h>
#include <linux/can.h>
#define SOL_CAN_ISOTP (SOL_CAN_BASE + CAN_ISOTP)
/* for socket options affecting the socket (not the global system) */
#define CAN_ISOTP_OPTS 1 /* pass struct can_isotp_options */
#define CAN_ISOTP_RECV_FC 2 /* pass struct can_isotp_fc_options */
/* sockopts to force stmin timer values for protocol regression tests */
#define CAN_ISOTP_TX_STMIN 3 /* pass __u32 value in nano secs */
/* use this time instead of value */
/* provided in FC from the receiver */
#define CAN_ISOTP_RX_STMIN 4 /* pass __u32 value in nano secs */
/* ignore received CF frames which */
/* timestamps differ less than val */
#define CAN_ISOTP_LL_OPTS 5 /* pass struct can_isotp_ll_options */
struct can_isotp_options {
__u32 flags; /* set flags for isotp behaviour. */
/* __u32 value : flags see below */
__u32 frame_txtime; /* frame transmission time (N_As/N_Ar) */
/* __u32 value : time in nano secs */
__u8 ext_address; /* set address for extended addressing */
/* __u8 value : extended address */
__u8 txpad_content; /* set content of padding byte (tx) */
/* __u8 value : content on tx path */
__u8 rxpad_content; /* set content of padding byte (rx) */
/* __u8 value : content on rx path */
__u8 rx_ext_address; /* set address for extended addressing */
/* __u8 value : extended address (rx) */
};
struct can_isotp_fc_options {
__u8 bs; /* blocksize provided in FC frame */
/* __u8 value : blocksize. 0 = off */
__u8 stmin; /* separation time provided in FC frame */
/* __u8 value : */
/* 0x00 - 0x7F : 0 - 127 ms */
/* 0x80 - 0xF0 : reserved */
/* 0xF1 - 0xF9 : 100 us - 900 us */
/* 0xFA - 0xFF : reserved */
__u8 wftmax; /* max. number of wait frame transmiss. */
/* __u8 value : 0 = omit FC N_PDU WT */
};
struct can_isotp_ll_options {
__u8 mtu; /* generated & accepted CAN frame type */
/* __u8 value : */
/* CAN_MTU (16) -> standard CAN 2.0 */
/* CANFD_MTU (72) -> CAN FD frame */
__u8 tx_dl; /* tx link layer data length in bytes */
/* (configured maximum payload length) */
/* __u8 value : 8,12,16,20,24,32,48,64 */
/* => rx path supports all LL_DL values */
__u8 tx_flags; /* set into struct canfd_frame.flags */
/* at frame creation: e.g. CANFD_BRS */
/* Obsolete when the BRS flag is fixed */
/* by the CAN netdriver configuration */
};
/* flags for isotp behaviour */
#define CAN_ISOTP_LISTEN_MODE 0x0001 /* listen only (do not send FC) */
#define CAN_ISOTP_EXTEND_ADDR 0x0002 /* enable extended addressing */
#define CAN_ISOTP_TX_PADDING 0x0004 /* enable CAN frame padding tx path */
#define CAN_ISOTP_RX_PADDING 0x0008 /* enable CAN frame padding rx path */
#define CAN_ISOTP_CHK_PAD_LEN 0x0010 /* check received CAN frame padding */
#define CAN_ISOTP_CHK_PAD_DATA 0x0020 /* check received CAN frame padding */
#define CAN_ISOTP_HALF_DUPLEX 0x0040 /* half duplex error state handling */
#define CAN_ISOTP_FORCE_TXSTMIN 0x0080 /* ignore stmin from received FC */
#define CAN_ISOTP_FORCE_RXSTMIN 0x0100 /* ignore CFs depending on rx stmin */
#define CAN_ISOTP_RX_EXT_ADDR 0x0200 /* different rx extended addressing */
#define CAN_ISOTP_WAIT_TX_DONE 0x0400 /* wait for tx completion */
#define CAN_ISOTP_SF_BROADCAST 0x0800 /* 1-to-N functional addressing */
#define CAN_ISOTP_CF_BROADCAST 0x1000 /* 1-to-N transmission w/o FC */
#define CAN_ISOTP_DYN_FC_PARMS 0x2000 /* dynamic FC parameters BS/STmin */
/* protocol machine default values */
#define CAN_ISOTP_DEFAULT_FLAGS 0
#define CAN_ISOTP_DEFAULT_EXT_ADDRESS 0x00
#define CAN_ISOTP_DEFAULT_PAD_CONTENT 0xCC /* prevent bit-stuffing */
#define CAN_ISOTP_DEFAULT_FRAME_TXTIME 50000 /* 50 micro seconds */
#define CAN_ISOTP_DEFAULT_RECV_BS 0
#define CAN_ISOTP_DEFAULT_RECV_STMIN 0x00
#define CAN_ISOTP_DEFAULT_RECV_WFTMAX 0
/*
* Remark on CAN_ISOTP_DEFAULT_RECV_* values:
*
* We can strongly assume, that the Linux Kernel implementation of
* CAN_ISOTP is capable to run with BS=0, STmin=0 and WFTmax=0.
* But as we like to be able to behave as a commonly available ECU,
* these default settings can be changed via sockopts.
* For that reason the STmin value is intentionally _not_ checked for
* consistency and copied directly into the flow control (FC) frame.
*/
/* link layer default values => make use of Classical CAN frames */
#define CAN_ISOTP_DEFAULT_LL_MTU CAN_MTU
#define CAN_ISOTP_DEFAULT_LL_TX_DL CAN_MAX_DLEN
#define CAN_ISOTP_DEFAULT_LL_TX_FLAGS 0
/*
* The CAN_ISOTP_DEFAULT_FRAME_TXTIME has become a non-zero value as
* it only makes sense for isotp implementation tests to run without
* a N_As value. As user space applications usually do not set the
* frame_txtime element of struct can_isotp_options the new in-kernel
* default is very likely overwritten with zero when the sockopt()
* CAN_ISOTP_OPTS is invoked.
* To make sure that a N_As value of zero is only set intentional the
* value '0' is now interpreted as 'do not change the current value'.
* When a frame_txtime of zero is required for testing purposes this
* CAN_ISOTP_FRAME_TXTIME_ZERO u32 value has to be set in frame_txtime.
*/
#define CAN_ISOTP_FRAME_TXTIME_ZERO 0xFFFFFFFF
#endif /* !_UAPI_CAN_ISOTP_H */

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/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
/*
* j1939.h
*
* Copyright (c) 2010-2011 EIA Electronics
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#ifndef _UAPI_CAN_J1939_H_
#define _UAPI_CAN_J1939_H_
#include <linux/types.h>
#include <linux/socket.h>
#include <linux/can.h>
#define J1939_MAX_UNICAST_ADDR 0xfd
#define J1939_IDLE_ADDR 0xfe
#define J1939_NO_ADDR 0xff /* == broadcast or no addr */
#define J1939_NO_NAME 0
#define J1939_PGN_REQUEST 0x0ea00 /* Request PG */
#define J1939_PGN_ADDRESS_CLAIMED 0x0ee00 /* Address Claimed */
#define J1939_PGN_ADDRESS_COMMANDED 0x0fed8 /* Commanded Address */
#define J1939_PGN_PDU1_MAX 0x3ff00
#define J1939_PGN_MAX 0x3ffff
#define J1939_NO_PGN 0x40000
/* J1939 Parameter Group Number
*
* bit 0-7 : PDU Specific (PS)
* bit 8-15 : PDU Format (PF)
* bit 16 : Data Page (DP)
* bit 17 : Reserved (R)
* bit 19-31 : set to zero
*/
typedef __u32 pgn_t;
/* J1939 Priority
*
* bit 0-2 : Priority (P)
* bit 3-7 : set to zero
*/
typedef __u8 priority_t;
/* J1939 NAME
*
* bit 0-20 : Identity Number
* bit 21-31 : Manufacturer Code
* bit 32-34 : ECU Instance
* bit 35-39 : Function Instance
* bit 40-47 : Function
* bit 48 : Reserved
* bit 49-55 : Vehicle System
* bit 56-59 : Vehicle System Instance
* bit 60-62 : Industry Group
* bit 63 : Arbitrary Address Capable
*/
typedef __u64 name_t;
/* J1939 socket options */
#define SOL_CAN_J1939 (SOL_CAN_BASE + CAN_J1939)
enum {
SO_J1939_FILTER = 1, /* set filters */
SO_J1939_PROMISC = 2, /* set/clr promiscuous mode */
SO_J1939_SEND_PRIO = 3,
SO_J1939_ERRQUEUE = 4,
};
enum {
SCM_J1939_DEST_ADDR = 1,
SCM_J1939_DEST_NAME = 2,
SCM_J1939_PRIO = 3,
SCM_J1939_ERRQUEUE = 4,
};
enum {
J1939_NLA_PAD,
J1939_NLA_BYTES_ACKED,
J1939_NLA_TOTAL_SIZE,
J1939_NLA_PGN,
J1939_NLA_SRC_NAME,
J1939_NLA_DEST_NAME,
J1939_NLA_SRC_ADDR,
J1939_NLA_DEST_ADDR,
};
enum {
J1939_EE_INFO_NONE,
J1939_EE_INFO_TX_ABORT,
J1939_EE_INFO_RX_RTS,
J1939_EE_INFO_RX_DPO,
J1939_EE_INFO_RX_ABORT,
};
struct j1939_filter {
name_t name;
name_t name_mask;
pgn_t pgn;
pgn_t pgn_mask;
__u8 addr;
__u8 addr_mask;
};
#define J1939_FILTER_MAX 512 /* maximum number of j1939_filter set via setsockopt() */
#endif /* !_UAPI_CAN_J1939_H_ */

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/* 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 _UAPI_CAN_NETLINK_H
#define _UAPI_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 */
#define CAN_CTRLMODE_TDC_AUTO 0x200 /* CAN transiver automatically calculates TDCV */
#define CAN_CTRLMODE_TDC_MANUAL 0x400 /* TDCV is manually set up by user */
/*
* 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_TDC,
IFLA_CAN_CTRLMODE_EXT,
/* add new constants above here */
__IFLA_CAN_MAX,
IFLA_CAN_MAX = __IFLA_CAN_MAX - 1
};
/*
* CAN FD Transmitter Delay Compensation (TDC)
*
* Please refer to struct can_tdc_const and can_tdc in
* include/linux/can/bittiming.h for further details.
*/
enum {
IFLA_CAN_TDC_UNSPEC,
IFLA_CAN_TDC_TDCV_MIN, /* u32 */
IFLA_CAN_TDC_TDCV_MAX, /* u32 */
IFLA_CAN_TDC_TDCO_MIN, /* u32 */
IFLA_CAN_TDC_TDCO_MAX, /* u32 */
IFLA_CAN_TDC_TDCF_MIN, /* u32 */
IFLA_CAN_TDC_TDCF_MAX, /* u32 */
IFLA_CAN_TDC_TDCV, /* u32 */
IFLA_CAN_TDC_TDCO, /* u32 */
IFLA_CAN_TDC_TDCF, /* u32 */
/* add new constants above here */
__IFLA_CAN_TDC,
IFLA_CAN_TDC_MAX = __IFLA_CAN_TDC - 1
};
/*
* IFLA_CAN_CTRLMODE_EXT nest: controller mode extended parameters
*/
enum {
IFLA_CAN_CTRLMODE_UNSPEC,
IFLA_CAN_CTRLMODE_SUPPORTED, /* u32 */
/* add new constants above here */
__IFLA_CAN_CTRLMODE,
IFLA_CAN_CTRLMODE_MAX = __IFLA_CAN_CTRLMODE - 1
};
/* u16 termination range: 1..65535 Ohms */
#define CAN_TERMINATION_DISABLED 0
#endif /* !_UAPI_CAN_NETLINK_H */

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/* SPDX-License-Identifier: ((GPL-2.0-only WITH Linux-syscall-note) OR BSD-3-Clause) */
/*
* linux/can/raw.h
*
* Definitions for raw CAN sockets
*
* Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Urs Thuermann <urs.thuermann@volkswagen.de>
* Copyright (c) 2002-2007 Volkswagen Group Electronic Research
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of Volkswagen nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* Alternatively, provided that this notice is retained in full, this
* software may be distributed under the terms of the GNU General
* Public License ("GPL") version 2, in which case the provisions of the
* GPL apply INSTEAD OF those given above.
*
* The provided data structures and external interfaces from this code
* are not restricted to be used by modules with a GPL compatible license.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
* DAMAGE.
*/
#ifndef _UAPI_CAN_RAW_H
#define _UAPI_CAN_RAW_H
#include <linux/can.h>
#define SOL_CAN_RAW (SOL_CAN_BASE + CAN_RAW)
#define CAN_RAW_FILTER_MAX 512 /* maximum number of can_filter set via setsockopt() */
enum {
SCM_CAN_RAW_ERRQUEUE = 1,
};
/* for socket options affecting the socket (not the global system) */
enum {
CAN_RAW_FILTER = 1, /* set 0 .. n can_filter(s) */
CAN_RAW_ERR_FILTER, /* set filter for error frames */
CAN_RAW_LOOPBACK, /* local loopback (default:on) */
CAN_RAW_RECV_OWN_MSGS, /* receive my own msgs (default:off) */
CAN_RAW_FD_FRAMES, /* allow CAN FD frames (default:off) */
CAN_RAW_JOIN_FILTERS, /* all filters must match to trigger */
CAN_RAW_XL_FRAMES, /* allow CAN XL frames (default:off) */
CAN_RAW_XL_VCID_OPTS, /* CAN XL VCID configuration options */
};
/* configuration for CAN XL virtual CAN identifier (VCID) handling */
struct can_raw_vcid_options {
__u8 flags; /* flags for vcid (filter) behaviour */
__u8 tx_vcid; /* VCID value set into canxl_frame.prio */
__u8 rx_vcid; /* VCID value for VCID filter */
__u8 rx_vcid_mask; /* VCID mask for VCID filter */
};
/* can_raw_vcid_options.flags for CAN XL virtual CAN identifier handling */
#define CAN_RAW_XL_VCID_TX_SET 0x01
#define CAN_RAW_XL_VCID_TX_PASS 0x02
#define CAN_RAW_XL_VCID_RX_FILTER 0x04
#endif /* !_UAPI_CAN_RAW_H */

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/* SPDX-License-Identifier: GPL-2.0-only WITH Linux-syscall-note */
#ifndef _UAPI_CAN_VXCAN_H
#define _UAPI_CAN_VXCAN_H
enum {
VXCAN_INFO_UNSPEC,
VXCAN_INFO_PEER,
__VXCAN_INFO_MAX
#define VXCAN_INFO_MAX (__VXCAN_INFO_MAX - 1)
};
#endif

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI_LINUX_ERRQUEUE_H
#define _UAPI_LINUX_ERRQUEUE_H
#include <linux/types.h>
struct sock_extended_err {
__u32 ee_errno;
__u8 ee_origin;
__u8 ee_type;
__u8 ee_code;
__u8 ee_pad;
__u32 ee_info;
__u32 ee_data;
};
#define SO_EE_ORIGIN_NONE 0
#define SO_EE_ORIGIN_LOCAL 1
#define SO_EE_ORIGIN_ICMP 2
#define SO_EE_ORIGIN_ICMP6 3
#define SO_EE_ORIGIN_TXSTATUS 4
#define SO_EE_ORIGIN_ZEROCOPY 5
#define SO_EE_ORIGIN_TXTIME 6
#define SO_EE_ORIGIN_TIMESTAMPING SO_EE_ORIGIN_TXSTATUS
#define SO_EE_OFFENDER(ee) ((struct sockaddr*)((ee)+1))
#define SO_EE_CODE_ZEROCOPY_COPIED 1
#define SO_EE_CODE_TXTIME_INVALID_PARAM 1
#define SO_EE_CODE_TXTIME_MISSED 2
/**
* struct scm_timestamping - timestamps exposed through cmsg
*
* The timestamping interfaces SO_TIMESTAMPING, MSG_TSTAMP_*
* communicate network timestamps by passing this struct in a cmsg with
* recvmsg(). See Documentation/networking/timestamping.txt for details.
*/
struct scm_timestamping {
struct timespec ts[3];
};
/* The type of scm_timestamping, passed in sock_extended_err ee_info.
* This defines the type of ts[0]. For SCM_TSTAMP_SND only, if ts[0]
* is zero, then this is a hardware timestamp and recorded in ts[2].
*/
enum {
SCM_TSTAMP_SND, /* driver passed skb to NIC, or HW */
SCM_TSTAMP_SCHED, /* data entered the packet scheduler */
SCM_TSTAMP_ACK, /* data acknowledged by peer */
};
#endif /* _UAPI_LINUX_ERRQUEUE_H */

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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _LINUX_KERNEL_H
#define _LINUX_KERNEL_H
#include <stddef.h>
#include <stdint.h>
#include <stdio.h>
#include <stdbool.h>
#include <linux/can.h>
typedef uint8_t u8;
typedef uint16_t u16;
typedef uint32_t u32;
typedef uint32_t __le32;
struct mcp251xfd_mem;
struct regmap {
struct mcp251xfd_mem *mem;
};
#define pr_info(...) fprintf(stdout, ## __VA_ARGS__)
#define pr_err(...) fprintf(stderr, ## __VA_ARGS__)
#define pr_warn(...) fprintf(stderr, ## __VA_ARGS__)
#define pr_cont(...) fprintf(stdout, ## __VA_ARGS__)
#define netdev_info(ndev, ...) fprintf(stdout, ## __VA_ARGS__)
#define BUILD_BUG_ON(...)
#define BITS_PER_LONG (sizeof(long) * 8)
#define ____cacheline_aligned
#define ARRAY_SIZE(arr) (sizeof(arr) / sizeof((arr)[0]))
int regmap_bulk_read(struct regmap *map, unsigned int reg,
void *val, size_t val_count);
#define SZ_2K 0x00000800
#define __packed __attribute__((__packed__))
#define sizeof_field(TYPE, MEMBER) sizeof((((TYPE *)0)->MEMBER))
#define BIT(nr) (UL(1) << (nr))
#define __stringify_1(x...) #x
#define __stringify(x...) __stringify_1(x)
#ifdef __ASSEMBLY__
#define _AC(X,Y) X
#define _AT(T,X) X
#else
#define __AC(X,Y) (X##Y)
#define _AC(X,Y) __AC(X,Y)
#define _AT(T,X) ((T)(X))
#endif
#define _UL(x) (_AC(x, UL))
#define _ULL(x) (_AC(x, ULL))
#define UL(x) (_UL(x))
#define ULL(x) (_ULL(x))
#define GENMASK(h, l) \
(((~UL(0)) - (UL(1) << (l)) + 1) & \
(~UL(0) >> (BITS_PER_LONG - 1 - (h))))
#define __bf_shf(x) (__builtin_ffsll(x) - 1)
#define FIELD_PREP(_mask, _val) \
({ \
((typeof(_mask))(_val) << __bf_shf(_mask)) & (_mask); \
})
#define FIELD_GET(_mask, _reg) \
({ \
(typeof(_mask))(((_reg) & (_mask)) >> __bf_shf(_mask)); \
})
#define min_t(type, x, y) ({ \
type __min1 = (x); \
type __min2 = (y); \
__min1 < __min2 ? __min1 : __min2; })
#define get_canfd_dlc(i) (min_t(__u8, (i), CANFD_MAX_DLC))
static const u8 dlc2len[] = {0, 1, 2, 3, 4, 5, 6, 7,
8, 12, 16, 20, 24, 32, 48, 64};
/* get data length from can_dlc with sanitized can_dlc */
static inline u8 can_dlc2len(u8 can_dlc)
{
return dlc2len[can_dlc & 0x0F];
}
#endif /* _LINUX_KERNEL_H */

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
/*
* Userspace API for hardware time stamping of network packets
*
* Copyright (C) 2008,2009 Intel Corporation
* Author: Patrick Ohly <patrick.ohly@intel.com>
*
*/
#ifndef _NET_TIMESTAMPING_H
#define _NET_TIMESTAMPING_H
#include <linux/types.h>
#include <linux/socket.h> /* for SO_TIMESTAMPING */
/* SO_TIMESTAMPING gets an integer bit field comprised of these values */
enum {
SOF_TIMESTAMPING_TX_HARDWARE = (1<<0),
SOF_TIMESTAMPING_TX_SOFTWARE = (1<<1),
SOF_TIMESTAMPING_RX_HARDWARE = (1<<2),
SOF_TIMESTAMPING_RX_SOFTWARE = (1<<3),
SOF_TIMESTAMPING_SOFTWARE = (1<<4),
SOF_TIMESTAMPING_SYS_HARDWARE = (1<<5),
SOF_TIMESTAMPING_RAW_HARDWARE = (1<<6),
SOF_TIMESTAMPING_OPT_ID = (1<<7),
SOF_TIMESTAMPING_TX_SCHED = (1<<8),
SOF_TIMESTAMPING_TX_ACK = (1<<9),
SOF_TIMESTAMPING_OPT_CMSG = (1<<10),
SOF_TIMESTAMPING_OPT_TSONLY = (1<<11),
SOF_TIMESTAMPING_OPT_STATS = (1<<12),
SOF_TIMESTAMPING_OPT_PKTINFO = (1<<13),
SOF_TIMESTAMPING_OPT_TX_SWHW = (1<<14),
SOF_TIMESTAMPING_LAST = SOF_TIMESTAMPING_OPT_TX_SWHW,
SOF_TIMESTAMPING_MASK = (SOF_TIMESTAMPING_LAST - 1) |
SOF_TIMESTAMPING_LAST
};
/*
* SO_TIMESTAMPING flags are either for recording a packet timestamp or for
* reporting the timestamp to user space.
* Recording flags can be set both via socket options and control messages.
*/
#define SOF_TIMESTAMPING_TX_RECORD_MASK (SOF_TIMESTAMPING_TX_HARDWARE | \
SOF_TIMESTAMPING_TX_SOFTWARE | \
SOF_TIMESTAMPING_TX_SCHED | \
SOF_TIMESTAMPING_TX_ACK)
/**
* struct hwtstamp_config - %SIOCGHWTSTAMP and %SIOCSHWTSTAMP parameter
*
* @flags: no flags defined right now, must be zero for %SIOCSHWTSTAMP
* @tx_type: one of HWTSTAMP_TX_*
* @rx_filter: one of HWTSTAMP_FILTER_*
*
* %SIOCGHWTSTAMP and %SIOCSHWTSTAMP expect a &struct ifreq with a
* ifr_data pointer to this structure. For %SIOCSHWTSTAMP, if the
* driver or hardware does not support the requested @rx_filter value,
* the driver may use a more general filter mode. In this case
* @rx_filter will indicate the actual mode on return.
*/
struct hwtstamp_config {
int flags;
int tx_type;
int rx_filter;
};
/* possible values for hwtstamp_config->tx_type */
enum hwtstamp_tx_types {
/*
* No outgoing packet will need hardware time stamping;
* should a packet arrive which asks for it, no hardware
* time stamping will be done.
*/
HWTSTAMP_TX_OFF,
/*
* Enables hardware time stamping for outgoing packets;
* the sender of the packet decides which are to be
* time stamped by setting %SOF_TIMESTAMPING_TX_SOFTWARE
* before sending the packet.
*/
HWTSTAMP_TX_ON,
/*
* Enables time stamping for outgoing packets just as
* HWTSTAMP_TX_ON does, but also enables time stamp insertion
* directly into Sync packets. In this case, transmitted Sync
* packets will not received a time stamp via the socket error
* queue.
*/
HWTSTAMP_TX_ONESTEP_SYNC,
};
/* possible values for hwtstamp_config->rx_filter */
enum hwtstamp_rx_filters {
/* time stamp no incoming packet at all */
HWTSTAMP_FILTER_NONE,
/* time stamp any incoming packet */
HWTSTAMP_FILTER_ALL,
/* return value: time stamp all packets requested plus some others */
HWTSTAMP_FILTER_SOME,
/* PTP v1, UDP, any kind of event packet */
HWTSTAMP_FILTER_PTP_V1_L4_EVENT,
/* PTP v1, UDP, Sync packet */
HWTSTAMP_FILTER_PTP_V1_L4_SYNC,
/* PTP v1, UDP, Delay_req packet */
HWTSTAMP_FILTER_PTP_V1_L4_DELAY_REQ,
/* PTP v2, UDP, any kind of event packet */
HWTSTAMP_FILTER_PTP_V2_L4_EVENT,
/* PTP v2, UDP, Sync packet */
HWTSTAMP_FILTER_PTP_V2_L4_SYNC,
/* PTP v2, UDP, Delay_req packet */
HWTSTAMP_FILTER_PTP_V2_L4_DELAY_REQ,
/* 802.AS1, Ethernet, any kind of event packet */
HWTSTAMP_FILTER_PTP_V2_L2_EVENT,
/* 802.AS1, Ethernet, Sync packet */
HWTSTAMP_FILTER_PTP_V2_L2_SYNC,
/* 802.AS1, Ethernet, Delay_req packet */
HWTSTAMP_FILTER_PTP_V2_L2_DELAY_REQ,
/* PTP v2/802.AS1, any layer, any kind of event packet */
HWTSTAMP_FILTER_PTP_V2_EVENT,
/* PTP v2/802.AS1, any layer, Sync packet */
HWTSTAMP_FILTER_PTP_V2_SYNC,
/* PTP v2/802.AS1, any layer, Delay_req packet */
HWTSTAMP_FILTER_PTP_V2_DELAY_REQ,
/* NTP, UDP, all versions and packet modes */
HWTSTAMP_FILTER_NTP_ALL,
};
/* SCM_TIMESTAMPING_PKTINFO control message */
struct scm_ts_pktinfo {
__u32 if_index;
__u32 pkt_length;
__u32 reserved[2];
};
/*
* SO_TXTIME gets a struct sock_txtime with flags being an integer bit
* field comprised of these values.
*/
enum txtime_flags {
SOF_TXTIME_DEADLINE_MODE = (1 << 0),
SOF_TXTIME_REPORT_ERRORS = (1 << 1),
SOF_TXTIME_FLAGS_LAST = SOF_TXTIME_REPORT_ERRORS,
SOF_TXTIME_FLAGS_MASK = (SOF_TXTIME_FLAGS_LAST - 1) |
SOF_TXTIME_FLAGS_LAST
};
struct sock_txtime {
__kernel_clockid_t clockid;/* reference clockid */
__u32 flags; /* as defined by enum txtime_flags */
};
#endif /* _NET_TIMESTAMPING_H */

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/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
#ifndef _UAPI__LINUX_NETLINK_H
#define _UAPI__LINUX_NETLINK_H
#include <linux/kernel.h>
#include <linux/socket.h> /* for __kernel_sa_family_t */
#include <linux/types.h>
#define NETLINK_ROUTE 0 /* Routing/device hook */
#define NETLINK_UNUSED 1 /* Unused number */
#define NETLINK_USERSOCK 2 /* Reserved for user mode socket protocols */
#define NETLINK_FIREWALL 3 /* Unused number, formerly ip_queue */
#define NETLINK_SOCK_DIAG 4 /* socket monitoring */
#define NETLINK_NFLOG 5 /* netfilter/iptables ULOG */
#define NETLINK_XFRM 6 /* ipsec */
#define NETLINK_SELINUX 7 /* SELinux event notifications */
#define NETLINK_ISCSI 8 /* Open-iSCSI */
#define NETLINK_AUDIT 9 /* auditing */
#define NETLINK_FIB_LOOKUP 10
#define NETLINK_CONNECTOR 11
#define NETLINK_NETFILTER 12 /* netfilter subsystem */
#define NETLINK_IP6_FW 13
#define NETLINK_DNRTMSG 14 /* DECnet routing messages */
#define NETLINK_KOBJECT_UEVENT 15 /* Kernel messages to userspace */
#define NETLINK_GENERIC 16
/* leave room for NETLINK_DM (DM Events) */
#define NETLINK_SCSITRANSPORT 18 /* SCSI Transports */
#define NETLINK_ECRYPTFS 19
#define NETLINK_RDMA 20
#define NETLINK_CRYPTO 21 /* Crypto layer */
#define NETLINK_SMC 22 /* SMC monitoring */
#define NETLINK_INET_DIAG NETLINK_SOCK_DIAG
#define MAX_LINKS 32
struct sockaddr_nl {
__kernel_sa_family_t nl_family; /* AF_NETLINK */
unsigned short nl_pad; /* zero */
__u32 nl_pid; /* port ID */
__u32 nl_groups; /* multicast groups mask */
};
struct nlmsghdr {
__u32 nlmsg_len; /* Length of message including header */
__u16 nlmsg_type; /* Message content */
__u16 nlmsg_flags; /* Additional flags */
__u32 nlmsg_seq; /* Sequence number */
__u32 nlmsg_pid; /* Sending process port ID */
};
/* Flags values */
#define NLM_F_REQUEST 0x01 /* It is request message. */
#define NLM_F_MULTI 0x02 /* Multipart message, terminated by NLMSG_DONE */
#define NLM_F_ACK 0x04 /* Reply with ack, with zero or error code */
#define NLM_F_ECHO 0x08 /* Echo this request */
#define NLM_F_DUMP_INTR 0x10 /* Dump was inconsistent due to sequence change */
#define NLM_F_DUMP_FILTERED 0x20 /* Dump was filtered as requested */
/* Modifiers to GET request */
#define NLM_F_ROOT 0x100 /* specify tree root */
#define NLM_F_MATCH 0x200 /* return all matching */
#define NLM_F_ATOMIC 0x400 /* atomic GET */
#define NLM_F_DUMP (NLM_F_ROOT|NLM_F_MATCH)
/* Modifiers to NEW request */
#define NLM_F_REPLACE 0x100 /* Override existing */
#define NLM_F_EXCL 0x200 /* Do not touch, if it exists */
#define NLM_F_CREATE 0x400 /* Create, if it does not exist */
#define NLM_F_APPEND 0x800 /* Add to end of list */
/* Modifiers to DELETE request */
#define NLM_F_NONREC 0x100 /* Do not delete recursively */
/* Flags for ACK message */
#define NLM_F_CAPPED 0x100 /* request was capped */
#define NLM_F_ACK_TLVS 0x200 /* extended ACK TVLs were included */
/*
4.4BSD ADD NLM_F_CREATE|NLM_F_EXCL
4.4BSD CHANGE NLM_F_REPLACE
True CHANGE NLM_F_CREATE|NLM_F_REPLACE
Append NLM_F_CREATE
Check NLM_F_EXCL
*/
#define NLMSG_ALIGNTO 4U
#define NLMSG_ALIGN(len) ( ((len)+NLMSG_ALIGNTO-1) & ~(NLMSG_ALIGNTO-1) )
#define NLMSG_HDRLEN ((int) NLMSG_ALIGN(sizeof(struct nlmsghdr)))
#define NLMSG_LENGTH(len) ((len) + NLMSG_HDRLEN)
#define NLMSG_SPACE(len) NLMSG_ALIGN(NLMSG_LENGTH(len))
#define NLMSG_DATA(nlh) ((void*)(((char*)nlh) + NLMSG_LENGTH(0)))
#define NLMSG_NEXT(nlh,len) ((len) -= NLMSG_ALIGN((nlh)->nlmsg_len), \
(struct nlmsghdr*)(((char*)(nlh)) + NLMSG_ALIGN((nlh)->nlmsg_len)))
#define NLMSG_OK(nlh,len) ((len) >= (int)sizeof(struct nlmsghdr) && \
(nlh)->nlmsg_len >= sizeof(struct nlmsghdr) && \
(int)((nlh)->nlmsg_len) <= (len))
#define NLMSG_PAYLOAD(nlh,len) ((nlh)->nlmsg_len - NLMSG_SPACE((len)))
#define NLMSG_NOOP 0x1 /* Nothing. */
#define NLMSG_ERROR 0x2 /* Error */
#define NLMSG_DONE 0x3 /* End of a dump */
#define NLMSG_OVERRUN 0x4 /* Data lost */
#define NLMSG_MIN_TYPE 0x10 /* < 0x10: reserved control messages */
struct nlmsgerr {
int error;
struct nlmsghdr msg;
/*
* followed by the message contents unless NETLINK_CAP_ACK was set
* or the ACK indicates success (error == 0)
* message length is aligned with NLMSG_ALIGN()
*/
/*
* followed by TLVs defined in enum nlmsgerr_attrs
* if NETLINK_EXT_ACK was set
*/
};
/**
* enum nlmsgerr_attrs - nlmsgerr attributes
* @NLMSGERR_ATTR_UNUSED: unused
* @NLMSGERR_ATTR_MSG: error message string (string)
* @NLMSGERR_ATTR_OFFS: offset of the invalid attribute in the original
* message, counting from the beginning of the header (u32)
* @NLMSGERR_ATTR_COOKIE: arbitrary subsystem specific cookie to
* be used - in the success case - to identify a created
* object or operation or similar (binary)
* @__NLMSGERR_ATTR_MAX: number of attributes
* @NLMSGERR_ATTR_MAX: highest attribute number
*/
enum nlmsgerr_attrs {
NLMSGERR_ATTR_UNUSED,
NLMSGERR_ATTR_MSG,
NLMSGERR_ATTR_OFFS,
NLMSGERR_ATTR_COOKIE,
__NLMSGERR_ATTR_MAX,
NLMSGERR_ATTR_MAX = __NLMSGERR_ATTR_MAX - 1
};
#define NETLINK_ADD_MEMBERSHIP 1
#define NETLINK_DROP_MEMBERSHIP 2
#define NETLINK_PKTINFO 3
#define NETLINK_BROADCAST_ERROR 4
#define NETLINK_NO_ENOBUFS 5
#ifndef __KERNEL__
#define NETLINK_RX_RING 6
#define NETLINK_TX_RING 7
#endif
#define NETLINK_LISTEN_ALL_NSID 8
#define NETLINK_LIST_MEMBERSHIPS 9
#define NETLINK_CAP_ACK 10
#define NETLINK_EXT_ACK 11
#define NETLINK_GET_STRICT_CHK 12
struct nl_pktinfo {
__u32 group;
};
struct nl_mmap_req {
unsigned int nm_block_size;
unsigned int nm_block_nr;
unsigned int nm_frame_size;
unsigned int nm_frame_nr;
};
struct nl_mmap_hdr {
unsigned int nm_status;
unsigned int nm_len;
__u32 nm_group;
/* credentials */
__u32 nm_pid;
__u32 nm_uid;
__u32 nm_gid;
};
#ifndef __KERNEL__
enum nl_mmap_status {
NL_MMAP_STATUS_UNUSED,
NL_MMAP_STATUS_RESERVED,
NL_MMAP_STATUS_VALID,
NL_MMAP_STATUS_COPY,
NL_MMAP_STATUS_SKIP,
};
#define NL_MMAP_MSG_ALIGNMENT NLMSG_ALIGNTO
#define NL_MMAP_MSG_ALIGN(sz) __ALIGN_KERNEL(sz, NL_MMAP_MSG_ALIGNMENT)
#define NL_MMAP_HDRLEN NL_MMAP_MSG_ALIGN(sizeof(struct nl_mmap_hdr))
#endif
#define NET_MAJOR 36 /* Major 36 is reserved for networking */
enum {
NETLINK_UNCONNECTED = 0,
NETLINK_CONNECTED,
};
/*
* <------- NLA_HDRLEN ------> <-- NLA_ALIGN(payload)-->
* +---------------------+- - -+- - - - - - - - - -+- - -+
* | Header | Pad | Payload | Pad |
* | (struct nlattr) | ing | | ing |
* +---------------------+- - -+- - - - - - - - - -+- - -+
* <-------------- nlattr->nla_len -------------->
*/
struct nlattr {
__u16 nla_len;
__u16 nla_type;
};
/*
* nla_type (16 bits)
* +---+---+-------------------------------+
* | N | O | Attribute Type |
* +---+---+-------------------------------+
* N := Carries nested attributes
* O := Payload stored in network byte order
*
* Note: The N and O flag are mutually exclusive.
*/
#define NLA_F_NESTED (1 << 15)
#define NLA_F_NET_BYTEORDER (1 << 14)
#define NLA_TYPE_MASK ~(NLA_F_NESTED | NLA_F_NET_BYTEORDER)
#define NLA_ALIGNTO 4
#define NLA_ALIGN(len) (((len) + NLA_ALIGNTO - 1) & ~(NLA_ALIGNTO - 1))
#define NLA_HDRLEN ((int) NLA_ALIGN(sizeof(struct nlattr)))
/* Generic 32 bitflags attribute content sent to the kernel.
*
* The value is a bitmap that defines the values being set
* The selector is a bitmask that defines which value is legit
*
* Examples:
* value = 0x0, and selector = 0x1
* implies we are selecting bit 1 and we want to set its value to 0.
*
* value = 0x2, and selector = 0x2
* implies we are selecting bit 2 and we want to set its value to 1.
*
*/
struct nla_bitfield32 {
__u32 value;
__u32 selector;
};
#endif /* _UAPI__LINUX_NETLINK_H */