drivers/block/drbd/drbd_state_change.h

   1 #ifndef DRBD_STATE_CHANGE_H
   2 #define DRBD_STATE_CHANGE_H
   3
   4 struct drbd_resource_state_change {
   5         struct drbd_resource *resource;
   6         enum drbd_role role[2];
   7         bool susp[2];
   8         bool susp_nod[2];
   9         bool susp_fen[2];
  10 };
  11
  12 struct drbd_device_state_change {
  13         struct drbd_device *device;
  14         enum drbd_disk_state disk_state[2];
  15 };
  16
  17 struct drbd_connection_state_change {
  18         struct drbd_connection *connection;
  19         enum drbd_conns cstate[2];  /* drbd9: enum drbd_conn_state */
  20         enum drbd_role peer_role[2];
  21 };
  22
  23 struct drbd_peer_device_state_change {
  24         struct drbd_peer_device *peer_device;
  25         enum drbd_disk_state disk_state[2];
  26         enum drbd_conns repl_state[2];  /* drbd9: enum drbd_repl_state */
  27         bool resync_susp_user[2];
  28         bool resync_susp_peer[2];
  29         bool resync_susp_dependency[2];
  30 };
  31
  32 struct drbd_state_change {
  33         struct list_head list;
  34         unsigned int n_devices;
  35         unsigned int n_connections;
  36         struct drbd_resource_state_change resource[1];
  37         struct drbd_device_state_change *devices;
  38         struct drbd_connection_state_change *connections;
  39         struct drbd_peer_device_state_change *peer_devices;
  40 };
  41
  42 extern struct drbd_state_change *remember_old_state(struct drbd_resource *, gfp_t);
  43 extern void copy_old_to_new_state_change(struct drbd_state_change *);
  44 extern void forget_state_change(struct drbd_state_change *);
  45
  46 extern void notify_resource_state_change(struct sk_buff *,
  47                                          unsigned int,
  48                                          struct drbd_resource_state_change *,
  49                                          enum drbd_notification_type type);
  50 extern void notify_connection_state_change(struct sk_buff *,
  51                                            unsigned int,
  52                                            struct drbd_connection_state_change *,
  53                                            enum drbd_notification_type type);
  54 extern void notify_device_state_change(struct sk_buff *,
  55                                        unsigned int,
  56                                        struct drbd_device_state_change *,
  57                                        enum drbd_notification_type type);
  58 extern void notify_peer_device_state_change(struct sk_buff *,
  59                                             unsigned int,
  60                                             struct drbd_peer_device_state_change *,
  61                                             enum drbd_notification_type type);
  62
  63 #endif  /* DRBD_STATE_CHANGE_H */