net/batman-adv/sysfs.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (C) 2010-2020  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/kobject.h>
  13 #include <linux/netdevice.h>
  14 #include <linux/sysfs.h>
  15 #include <linux/types.h>
  16
  17 #define BATADV_SYSFS_IF_MESH_SUBDIR "mesh"
  18 #define BATADV_SYSFS_IF_BAT_SUBDIR "batman_adv"
  19 /**
  20  * BATADV_SYSFS_VLAN_SUBDIR_PREFIX - prefix of the subfolder that will be
  21  *  created in the sysfs hierarchy for each VLAN interface. The subfolder will
  22  *  be named "BATADV_SYSFS_VLAN_SUBDIR_PREFIX%vid".
  23  */
  24 #define BATADV_SYSFS_VLAN_SUBDIR_PREFIX "vlan"
  25
  26 /**
  27  * struct batadv_attribute - sysfs export helper for batman-adv attributes
  28  */
  29 struct batadv_attribute {
  30         /** @attr: sysfs attribute file */
  31         struct attribute attr;
  32
  33         /**
  34          * @show: function to export the current attribute's content to sysfs
  35          */
  36         ssize_t (*show)(struct kobject *kobj, struct attribute *attr,
  37                         char *buf);
  38
  39         /**
  40          * @store: function to load new value from character buffer and save it
  41          * in batman-adv attribute
  42          */
  43         ssize_t (*store)(struct kobject *kobj, struct attribute *attr,
  44                          char *buf, size_t count);
  45 };
  46
  47 #ifdef CONFIG_BATMAN_ADV_SYSFS
  48
  49 int batadv_sysfs_add_meshif(struct net_device *dev);
  50 void batadv_sysfs_del_meshif(struct net_device *dev);
  51 int batadv_sysfs_add_hardif(struct kobject **hardif_obj,
  52                             struct net_device *dev);
  53 void batadv_sysfs_del_hardif(struct kobject **hardif_obj);
  54 int batadv_sysfs_add_vlan(struct net_device *dev,
  55                           struct batadv_softif_vlan *vlan);
  56 void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
  57                            struct batadv_softif_vlan *vlan);
  58
  59 #else
  60
  61 static inline int batadv_sysfs_add_meshif(struct net_device *dev)
  62 {
  63         return 0;
  64 }
  65
  66 static inline void batadv_sysfs_del_meshif(struct net_device *dev)
  67 {
  68 }
  69
  70 static inline int batadv_sysfs_add_hardif(struct kobject **hardif_obj,
  71                                           struct net_device *dev)
  72 {
  73         return 0;
  74 }
  75
  76 static inline void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
  77 {
  78 }
  79
  80 static inline int batadv_sysfs_add_vlan(struct net_device *dev,
  81                                         struct batadv_softif_vlan *vlan)
  82 {
  83         return 0;
  84 }
  85
  86 static inline void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
  87                                          struct batadv_softif_vlan *vlan)
  88 {
  89 }
  90
  91 #endif
  92
  93 #endif /* _NET_BATMAN_ADV_SYSFS_H_ */