drivers/block/drbd/drbd_state_change.h

   1 /* SPDX-License-Identifier: GPL-2.0-only */
   2 #ifndef DRBD_STATE_CHANGE_H
   3 #define DRBD_STATE_CHANGE_H
   4
   5 struct drbd_resource_state_change {
   6         struct drbd_resource *resource;
   7         enum drbd_role role[2];
   8         bool susp[2];
   9         bool susp_nod[2];
  10         bool susp_fen[2];
  11 };
  12
  13 struct drbd_device_state_change {
  14         struct drbd_device *device;
  15         enum drbd_disk_state disk_state[2];
  16 };
  17
  18 struct drbd_connection_state_change {
  19         struct drbd_connection *connection;
  20         enum drbd_conns cstate[2];  /* drbd9: enum drbd_conn_state */
  21         enum drbd_role peer_role[2];
  22 };
  23
  24 struct drbd_peer_device_state_change {
  25         struct drbd_peer_device *peer_device;
  26         enum drbd_disk_state disk_state[2];
  27         enum drbd_conns repl_state[2];  /* drbd9: enum drbd_repl_state */
  28         bool resync_susp_user[2];
  29         bool resync_susp_peer[2];
  30         bool resync_susp_dependency[2];
  31 };
  32
  33 struct drbd_state_change {
  34         struct list_head list;
  35         unsigned int n_devices;
  36         unsigned int n_connections;
  37         struct drbd_resource_state_change resource[1];
  38         struct drbd_device_state_change *devices;
  39         struct drbd_connection_state_change *connections;
  40         struct drbd_peer_device_state_change *peer_devices;
  41 };
  42
  43 extern struct drbd_state_change *remember_old_state(struct drbd_resource *, gfp_t);
  44 extern void copy_old_to_new_state_change(struct drbd_state_change *);
  45 extern void forget_state_change(struct drbd_state_change *);
  46
  47 extern int notify_resource_state_change(struct sk_buff *,
  48                                          unsigned int,
  49                                          struct drbd_resource_state_change *,
  50                                          enum drbd_notification_type type);
  51 extern int notify_connection_state_change(struct sk_buff *,
  52                                            unsigned int,
  53                                            struct drbd_connection_state_change *,
  54                                            enum drbd_notification_type type);
  55 extern int notify_device_state_change(struct sk_buff *,
  56                                        unsigned int,
  57                                        struct drbd_device_state_change *,
  58                                        enum drbd_notification_type type);
  59 extern int notify_peer_device_state_change(struct sk_buff *,
  60                                             unsigned int,
  61                                             struct drbd_peer_device_state_change *,
  62                                             enum drbd_notification_type type);
  63
  64 #endif  /* DRBD_STATE_CHANGE_H */