include/linux/can/core.h

   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 */