1 /* 2 * linux/can/dev.h 3 * 4 * Definitions for the CAN network device driver interface 5 * 6 * Copyright (C) 2006 Andrey Volkov <[email protected]> 7 * Varma Electronics Oy 8 * 9 * Copyright (C) 2008 Wolfgang Grandegger <[email protected]> 10 * 11 * Send feedback to <[email protected]> 12 */ 13 14 #ifndef CAN_DEV_H 15 #define CAN_DEV_H 16 17 #include <linux/can/netlink.h> 18 #include <linux/can/error.h> 19 20 /* 21 * CAN mode 22 */ 23 enum can_mode { 24 CAN_MODE_STOP = 0, 25 CAN_MODE_START, 26 CAN_MODE_SLEEP 27 }; 28 29 /* 30 * CAN common private data 31 */ 32 struct can_priv { 33 struct can_device_stats can_stats; 34 35 struct can_bittiming bittiming; 36 struct can_bittiming_const *bittiming_const; 37 struct can_clock clock; 38 39 enum can_state state; 40 u32 ctrlmode; 41 42 int restart_ms; 43 struct timer_list restart_timer; 44 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); 49 50 unsigned int echo_skb_max; 51 struct sk_buff **echo_skb; 52 }; 53 54 struct net_device *alloc_candev(int sizeof_priv, unsigned int echo_skb_max); 55 void free_candev(struct net_device *dev); 56 57 int open_candev(struct net_device *dev); 58 void close_candev(struct net_device *dev); 59 60 int register_candev(struct net_device *dev); 61 void unregister_candev(struct net_device *dev); 62 63 int can_restart_now(struct net_device *dev); 64 void can_bus_off(struct net_device *dev); 65 66 void can_put_echo_skb(struct sk_buff *skb, struct net_device *dev, 67 unsigned int idx); 68 void can_get_echo_skb(struct net_device *dev, unsigned int idx); 69 void can_free_echo_skb(struct net_device *dev, unsigned int idx); 70 71 struct sk_buff *alloc_can_skb(struct net_device *dev, struct can_frame **cf); 72 struct sk_buff *alloc_can_err_skb(struct net_device *dev, 73 struct can_frame **cf); 74 75 #endif /* CAN_DEV_H */ 76