include/net/ncsi.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __NET_NCSI_H
   3 #define __NET_NCSI_H
   4
   5 #include <linux/types.h>
   6
   7 /*
   8  * The NCSI device states seen from external. More NCSI device states are
   9  * only visible internally (in net/ncsi/internal.h). When the NCSI device
  10  * is registered, it's in ncsi_dev_state_registered state. The state
  11  * ncsi_dev_state_start is used to drive to choose active package and
  12  * channel. After that, its state is changed to ncsi_dev_state_functional.
  13  *
  14  * The state ncsi_dev_state_stop helps to shut down the currently active
  15  * package and channel while ncsi_dev_state_config helps to reconfigure
  16  * them.
  17  */
  18 enum {
  19         ncsi_dev_state_registered       = 0x0000,
  20         ncsi_dev_state_functional       = 0x0100,
  21         ncsi_dev_state_probe            = 0x0200,
  22         ncsi_dev_state_config           = 0x0300,
  23         ncsi_dev_state_suspend          = 0x0400,
  24 };
  25
  26 struct ncsi_dev {
  27         int               state;
  28         int               link_up;
  29         struct net_device *dev;
  30         void              (*handler)(struct ncsi_dev *ndev);
  31 };
  32
  33 #ifdef CONFIG_NET_NCSI
  34 int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid);
  35 int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid);
  36 struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
  37                                    void (*notifier)(struct ncsi_dev *nd));
  38 int ncsi_start_dev(struct ncsi_dev *nd);
  39 void ncsi_stop_dev(struct ncsi_dev *nd);
  40 void ncsi_unregister_dev(struct ncsi_dev *nd);
  41 #else /* !CONFIG_NET_NCSI */
  42 static inline int ncsi_vlan_rx_add_vid(struct net_device *dev, __be16 proto, u16 vid)
  43 {
  44         return -EINVAL;
  45 }
  46
  47 static inline int ncsi_vlan_rx_kill_vid(struct net_device *dev, __be16 proto, u16 vid)
  48 {
  49         return -EINVAL;
  50 }
  51
  52 static inline struct ncsi_dev *ncsi_register_dev(struct net_device *dev,
  53                                         void (*notifier)(struct ncsi_dev *nd))
  54 {
  55         return NULL;
  56 }
  57
  58 static inline int ncsi_start_dev(struct ncsi_dev *nd)
  59 {
  60         return -ENOTTY;
  61 }
  62
  63 static void ncsi_stop_dev(struct ncsi_dev *nd)
  64 {
  65 }
  66
  67 static inline void ncsi_unregister_dev(struct ncsi_dev *nd)
  68 {
  69 }
  70 #endif /* CONFIG_NET_NCSI */
  71
  72 #endif /* __NET_NCSI_H */