include/linux/can/dev.h

   1 /*
   2  * linux/can/dev.h
   3  *
   4  * Definitions for the CAN network device driver interface
   5  *
   6  * Copyright (C) 2006 Andrey Volkov <avolkov@varma-el.com>
   7  *               Varma Electronics Oy
   8  *
   9  * Copyright (C) 2008 Wolfgang Grandegger <wg@grandegger.com>
  10  *
  11  * Send feedback to <socketcan-users@lists.berlios.de>
  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 */