xref: /openbmc/linux/include/linux/can/core.h (revision f30828a6)
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 */
65