| /* SPDX-License-Identifier: (GPL-2.0 OR BSD-3-Clause) */ |
| /* |
| * linux/can/core.h |
| * |
| * Prototypes 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 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); |
| void can_sock_destruct(struct sock *sk); |
| |
| #endif /* !_CAN_CORE_H */ |