include/linux/can/core.h

   1 /*
   2  * linux/can/core.h
   3  *
   4  * Protoypes and definitions for CAN protocol modules using the PF_CAN core
   5  *
   6  * Authors: Oliver Hartkopp <oliver.hartkopp@volkswagen.de>
   7  *          Urs Thuermann   <urs.thuermann@volkswagen.de>
   8  * Copyright (c) 2002-2007 Volkswagen Group Electronic Research
   9  * All rights reserved.
  10  *
  11  * Send feedback to <socketcan-users@lists.berlios.de>
  12  *
  13  */
  14
  15 #ifndef CAN_CORE_H
  16 #define CAN_CORE_H
  17
  18 #include <linux/can.h>
  19 #include <linux/skbuff.h>
  20 #include <linux/netdevice.h>
  21
  22 #define CAN_VERSION "20071116"
  23
  24 /* increment this number each time you change some user-space interface */
  25 #define CAN_ABI_VERSION "8"
  26
  27 #define CAN_VERSION_STRING "rev " CAN_VERSION " abi " CAN_ABI_VERSION
  28
  29 #define DNAME(dev) ((dev) ? (dev)->name : "any")
  30
  31 /**
  32  * struct can_proto - CAN protocol structure
  33  * @type:       type argument in socket() syscall, e.g. SOCK_DGRAM.
  34  * @protocol:   protocol number in socket() syscall.
  35  * @capability: capability needed to open the socket, or -1 for no restriction.
  36  * @ops:        pointer to struct proto_ops for sock->ops.
  37  * @prot:       pointer to struct proto structure.
  38  */
  39 struct can_proto {
  40         int              type;
  41         int              protocol;
  42         int              capability;
  43         struct proto_ops *ops;
  44         struct proto     *prot;
  45 };
  46
  47 /* function prototypes for the CAN networklayer core (af_can.c) */
  48
  49 extern int  can_proto_register(struct can_proto *cp);
  50 extern void can_proto_unregister(struct can_proto *cp);
  51
  52 extern int  can_rx_register(struct net_device *dev, canid_t can_id,
  53                             canid_t mask,
  54                             void (*func)(struct sk_buff *, void *),
  55                             void *data, char *ident);
  56
  57 extern void can_rx_unregister(struct net_device *dev, canid_t can_id,
  58                               canid_t mask,
  59                               void (*func)(struct sk_buff *, void *),
  60                               void *data);
  61
  62 extern int can_send(struct sk_buff *skb, int loop);
  63
  64 #endif /* CAN_CORE_H */