net/batman-adv/sysfs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2010-2019  B.A.T.M.A.N. contributors:
   3  *
   4  * Marek Lindner
   5  */
   6
   7 #ifndef _NET_BATMAN_ADV_SYSFS_H_
   8 #define _NET_BATMAN_ADV_SYSFS_H_
   9
  10 #include "main.h"
  11
  12 #include <linux/sysfs.h>
  13 #include <linux/types.h>
  14
  15 struct kobject;
  16 struct net_device;
  17
  18 #define BATADV_SYSFS_IF_MESH_SUBDIR "mesh"
  19 #define BATADV_SYSFS_IF_BAT_SUBDIR "batman_adv"
  20 /**
  21  * BATADV_SYSFS_VLAN_SUBDIR_PREFIX - prefix of the subfolder that will be
  22  *  created in the sysfs hierarchy for each VLAN interface. The subfolder will
  23  *  be named "BATADV_SYSFS_VLAN_SUBDIR_PREFIX%vid".
  24  */
  25 #define BATADV_SYSFS_VLAN_SUBDIR_PREFIX "vlan"
  26
  27 /**
  28  * struct batadv_attribute - sysfs export helper for batman-adv attributes
  29  */
  30 struct batadv_attribute {
  31         /** @attr: sysfs attribute file */
  32         struct attribute attr;
  33
  34         /**
  35          * @show: function to export the current attribute's content to sysfs
  36          */
  37         ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
  38                         char *buf);
  39
  40         /**
  41          * @store: function to load new value from character buffer and save it
  42          * in batman-adv attribute
  43          */
  44         ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
  45                          char *buf, size_t count);
  46 };
  47
  48 #ifdef CONFIG_BATMAN_ADV_SYSFS
  49
  50 int batadv_sysfs_add_meshif(struct net_device *dev);
  51 void batadv_sysfs_del_meshif(struct net_device *dev);
  52 int batadv_sysfs_add_hardif(struct kobject **hardif_obj,
  53                             struct net_device *dev);
  54 void batadv_sysfs_del_hardif(struct kobject **hardif_obj);
  55 int batadv_sysfs_add_vlan(struct net_device *dev,
  56                           struct batadv_softif_vlan *vlan);
  57 void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
  58                            struct batadv_softif_vlan *vlan);
  59
  60 #else
  61
  62 static inline int batadv_sysfs_add_meshif(struct net_device *dev)
  63 {
  64         return 0;
  65 }
  66
  67 static inline void batadv_sysfs_del_meshif(struct net_device *dev)
  68 {
  69 }
  70
  71 static inline int batadv_sysfs_add_hardif(struct kobject **hardif_obj,
  72                                           struct net_device *dev)
  73 {
  74         return 0;
  75 }
  76
  77 static inline void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
  78 {
  79 }
  80
  81 static inline int batadv_sysfs_add_vlan(struct net_device *dev,
  82                                         struct batadv_softif_vlan *vlan)
  83 {
  84         return 0;
  85 }
  86
  87 static inline void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
  88                                          struct batadv_softif_vlan *vlan)
  89 {
  90 }
  91
  92 #endif
  93
  94 #endif /* _NET_BATMAN_ADV_SYSFS_H_ */