4 * Definitions for the CAN network device driver interface
6 * Copyright (C) 2006 Andrey Volkov <avolkov@varma-el.com>
9 * Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
11 * Send feedback to <socketcan-users@lists.berlios.de>
17 #include <linux/can/netlink.h>
18 #include <linux/can/error.h>
30 * CAN common private data
33 struct can_device_stats can_stats
;
35 struct can_bittiming bittiming
;
36 struct can_bittiming_const
*bittiming_const
;
37 struct can_clock clock
;
43 struct timer_list restart_timer
;
45 int (*do_set_bittiming
)(struct net_device
*dev
);
46 int (*do_set_mode
)(struct net_device
*dev
, enum can_mode mode
);
47 int (*do_get_state
)(const struct net_device
*dev
,
48 enum can_state
*state
);
50 unsigned int echo_skb_max
;
51 struct sk_buff
**echo_skb
;
55 * get_can_dlc(value) - helper macro to cast a given data length code (dlc)
56 * to __u8 and ensure the dlc value to be max. 8 bytes.
58 * To be used in the CAN netdriver receive path to ensure conformance with
59 * ISO 11898-1 Chapter 8.4.2.3 (DLC field)
61 #define get_can_dlc(i) (min_t(__u8, (i), 8))
63 struct net_device
*alloc_candev(int sizeof_priv
, unsigned int echo_skb_max
);
64 void free_candev(struct net_device
*dev
);
66 int open_candev(struct net_device
*dev
);
67 void close_candev(struct net_device
*dev
);
69 int register_candev(struct net_device
*dev
);
70 void unregister_candev(struct net_device
*dev
);
72 int can_restart_now(struct net_device
*dev
);
73 void can_bus_off(struct net_device
*dev
);
75 void can_put_echo_skb(struct sk_buff
*skb
, struct net_device
*dev
,
77 void can_get_echo_skb(struct net_device
*dev
, unsigned int idx
);
78 void can_free_echo_skb(struct net_device
*dev
, unsigned int idx
);
80 struct sk_buff
*alloc_can_skb(struct net_device
*dev
, struct can_frame
**cf
);
81 struct sk_buff
*alloc_can_err_skb(struct net_device
*dev
,
82 struct can_frame
**cf
);
84 #endif /* CAN_DEV_H */