diff options
Diffstat (limited to 'include/linux/can/core.h')
| -rw-r--r-- | include/linux/can/core.h | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/include/linux/can/core.h b/include/linux/can/core.h new file mode 100644 index 000000000..5fb8d0e3f --- /dev/null +++ b/include/linux/can/core.h @@ -0,0 +1,63 @@ +/* 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 */ |