include/net/ncsi.h

   1 #ifndef __NET_NCSI_H
   2 #define __NET_NCSI_H
   3
   4 /*
   5  * The NCSI device states seen from external. More NCSI device states are
   6  * only visible internally (in net/ncsi/internal.h). When the NCSI device
   7  * is registered, it's in ncsi_dev_state_registered state. The state
   8  * ncsi_dev_state_start is used to drive to choose active package and
   9  * channel. After that, its state is changed to ncsi_dev_state_functional.
  10  *
  11  * The state ncsi_dev_state_stop helps to shut down the currently active
  12  * package and channel while ncsi_dev_state_config helps to reconfigure
  13  * them.
  14  */
  15 enum {
  16         ncsi_dev_state_registered       = 0x0000,
  17         ncsi_dev_state_functional       = 0x0100,
  18         ncsi_dev_state_probe            = 0x0200,
  19         ncsi_dev_state_config           = 0x0300,
  20         ncsi_dev_state_suspend          = 0x0400,
  21 };
  22
  23 struct ncsi_dev {
  24         int               state;
  25         int               link_up;
  26         struct net_device *dev;
  27         void              (*handler)(struct ncsi_dev *ndev);
  28 };
  29
  30 #ifdef CONFIG_NET_NCSI
  31 struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
  32                                    void (*notifier)(struct ncsi_dev *nd));
  33 int ncsi_start_dev(struct ncsi_dev *nd);
  34 void ncsi_stop_dev(struct ncsi_dev *nd);
  35 void ncsi_unregister_dev(struct ncsi_dev *nd);
  36 #else /* !CONFIG_NET_NCSI */
  37 static inline struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
  38                                         void (*notifier)(struct ncsi_dev *nd))
  39 {
  40         return NULL;
  41 }
  42
  43 static inline int ncsi_start_dev(struct ncsi_dev *nd)
  44 {
  45         return -ENOTTY;
  46 }
  47
  48 static void ncsi_stop_dev(struct ncsi_dev *nd)
  49 {
  50 }
  51
  52 static inline void ncsi_unregister_dev(struct ncsi_dev *nd)
  53 {
  54 }
  55 #endif /* CONFIG_NET_NCSI */
  56
  57 #endif /* __NET_NCSI_H */