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/* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */
/*
* linux/can/core.h
*
* Protoypes and definitions for CAN protocol modules using the PF_CAN core
*
* Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
* Urs Thuermann <urs.thuermann@volkswagen.de>
* Copyright (c) 2002-2017 Volkswagen Group Electronic Research
* All rights reserved.
*
*/
#ifndef _CAN_CORE_H
#define _CAN_CORE_H
#include <linux/can.h>
#include <linux/skbuff.h>
#include <linux/netdevice.h>
#define CAN_VERSION "20170425"
/* increment this number each time you change some user-space interface */
#define CAN_ABI_VERSION "9"
#define CAN_VERSION_STRING "rev " CAN_VERSION " abi " CAN_ABI_VERSION
#define DNAME(dev) ((dev) ? (dev)->name : "any")
/**
* struct can_proto - CAN protocol structure
* @type: type argument in socket() syscall, e.g. SOCK_DGRAM.
* @protocol: protocol number in socket() syscall.
* @ops: pointer to struct proto_ops for sock->ops.
* @prot: pointer to struct proto structure.
*/
struct can_proto {
int type;
int protocol;
const struct proto_ops *ops;
struct proto *prot;
};
/* required_size
* macro to find the minimum size of a struct
* that includes a requested member
*/
#define CAN_REQUIRED_SIZE(struct_type, member) \
(offsetof(typeof(struct_type), member) + \
sizeof(((typeof(struct_type) *)(NULL))->member))
/* function prototypes for the CAN networklayer core (af_can.c) */
extern int can_proto_register(const struct can_proto *cp);
extern void can_proto_unregister(const struct can_proto *cp);
int can_rx_register(struct net *net, struct net_device *dev,
canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data, char *ident, struct sock *sk);
extern void can_rx_unregister(struct net *net, struct net_device *dev,
canid_t can_id, canid_t mask,
void (*func)(struct sk_buff *, void *),
void *data);
extern int can_send(struct sk_buff *skb, int loop);
#endif /* !_CAN_CORE_H */
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