1 /* SPDX-License-Identifier: GPL-2.0 */ 2 /* 3 * linux/can/core.h 4 * 5 * Protoypes and definitions for CAN protocol modules using the PF_CAN core 6 * 7 * Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de> 8 * Urs Thuermann <urs.thuermann@volkswagen.de> 9 * Copyright (c) 2002-2017 Volkswagen Group Electronic Research 10 * All rights reserved. 11 * 12 */ 13 14 #ifndef _CAN_CORE_H 15 #define _CAN_CORE_H 16 17 #include <linux/can.h> 18 #include <linux/skbuff.h> 19 #include <linux/netdevice.h> 20 21 #define CAN_VERSION "20170425" 22 23 /* increment this number each time you change some user-space interface */ 24 #define CAN_ABI_VERSION "9" 25 26 #define CAN_VERSION_STRING "rev " CAN_VERSION " abi " CAN_ABI_VERSION 27 28 #define DNAME(dev) ((dev) ? (dev)->name : "any") 29 30 /** 31 * struct can_proto - CAN protocol structure 32 * @type: type argument in socket() syscall, e.g. SOCK_DGRAM. 33 * @protocol: protocol number in socket() syscall. 34 * @ops: pointer to struct proto_ops for sock->ops. 35 * @prot: pointer to struct proto structure. 36 */ 37 struct can_proto { 38 int type; 39 int protocol; 40 const struct proto_ops *ops; 41 struct proto *prot; 42 }; 43 44 /* function prototypes for the CAN networklayer core (af_can.c) */ 45 46 extern int can_proto_register(const struct can_proto *cp); 47 extern void can_proto_unregister(const struct can_proto *cp); 48 49 int can_rx_register(struct net *net, struct net_device *dev, 50 canid_t can_id, canid_t mask, 51 void (*func)(struct sk_buff *, void *), 52 void *data, char *ident, struct sock *sk); 53 54 extern void can_rx_unregister(struct net *net, struct net_device *dev, 55 canid_t can_id, canid_t mask, 56 void (*func)(struct sk_buff *, void *), 57 void *data); 58 59 extern int can_send(struct sk_buff *skb, int loop); 60 extern int can_ioctl(struct socket *sock, unsigned int cmd, unsigned long arg); 61 62 #endif /* !_CAN_CORE_H */ 63