net/batman-adv/bat_sysfs.c - linux - Git at Google

 /*
  * Copyright (C) 2010-2011 B.A.T.M.A.N. contributors:
  *
  * Marek Lindner
  *
  * This program is free software; you can redistribute it and/or
  * modify it under the terms of version 2 of the GNU General Public
  * License as published by the Free Software Foundation.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  * General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  * 02110-1301, USA
  *
  */

 #include "main.h"
 #include "bat_sysfs.h"
 #include "translation-table.h"
 #include "originator.h"
 #include "hard-interface.h"
 #include "gateway_common.h"
 #include "gateway_client.h"
 #include "vis.h"

 #define to_dev(obj)		container_of(obj, struct device, kobj)
 #define kobj_to_netdev(obj)	to_net_dev(to_dev(obj->parent))
 #define kobj_to_batpriv(obj)	netdev_priv(kobj_to_netdev(obj))

 /* Use this, if you have customized show and store functions */
 #define BAT_ATTR(_name, _mode, _show, _store)	\
 struct bat_attribute bat_attr_##_name = {	\
 	.attr = {.name = __stringify(_name),	\
 		 .mode = _mode },		\
 	.show   = _show,			\
 	.store  = _store,			\
 };

 #define BAT_ATTR_STORE_BOOL(_name, _post_func)				\
 ssize_t store_##_name(struct kobject *kobj, struct attribute *attr,	\
 		      char *buff, size_t count)				\
 {									\
 	struct net_device *net_dev = kobj_to_netdev(kobj);		\
 	struct bat_priv *bat_priv = netdev_priv(net_dev);		\
 	return __store_bool_attr(buff, count, _post_func, attr,		\
 				 &bat_priv->_name, net_dev);		\
 }

 #define BAT_ATTR_SHOW_BOOL(_name)					\
 ssize_t show_##_name(struct kobject *kobj, struct attribute *attr,	\
 			    char *buff)					\
 {									\
 	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);		\
 	return sprintf(buff, "%s\n",					\
 		       atomic_read(&bat_priv->_name) == 0 ?		\
 		       "disabled" : "enabled");				\
 }									\

 /* Use this, if you are going to turn a [name] in bat_priv on or off */
 #define BAT_ATTR_BOOL(_name, _mode, _post_func)				\
 	static BAT_ATTR_STORE_BOOL(_name, _post_func)			\
 	static BAT_ATTR_SHOW_BOOL(_name)				\
 	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)


 #define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func)		\
 ssize_t store_##_name(struct kobject *kobj, struct attribute *attr,	\
 			     char *buff, size_t count)			\
 {									\
 	struct net_device *net_dev = kobj_to_netdev(kobj);		\
 	struct bat_priv *bat_priv = netdev_priv(net_dev);		\
 	return __store_uint_attr(buff, count, _min, _max, _post_func,	\
 				 attr, &bat_priv->_name, net_dev);	\
 }

 #define BAT_ATTR_SHOW_UINT(_name)					\
 ssize_t show_##_name(struct kobject *kobj, struct attribute *attr,	\
 			    char *buff)					\
 {									\
 	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);		\
 	return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name));	\
 }									\

 /* Use this, if you are going to set [name] in bat_priv to unsigned integer
  * values only */
 #define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func)		\
 	static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func)	\
 	static BAT_ATTR_SHOW_UINT(_name)				\
 	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)


 static int store_bool_attr(char *buff, size_t count,
 			   struct net_device *net_dev,
 			   char *attr_name, atomic_t *attr)
 {
 	int enabled = -1;

 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';

 	if ((strncmp(buff, "1", 2) == 0) ||
 	    (strncmp(buff, "enable", 7) == 0) ||
 	    (strncmp(buff, "enabled", 8) == 0))
 		enabled = 1;

 	if ((strncmp(buff, "0", 2) == 0) ||
 	    (strncmp(buff, "disable", 8) == 0) ||
 	    (strncmp(buff, "disabled", 9) == 0))
 		enabled = 0;

 	if (enabled < 0) {
 		bat_info(net_dev,
 			 "%s: Invalid parameter received: %s\n",
 			 attr_name, buff);
 		return -EINVAL;
 	}

 	if (atomic_read(attr) == enabled)
 		return count;

 	bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
 		 atomic_read(attr) == 1 ? "enabled" : "disabled",
 		 enabled == 1 ? "enabled" : "disabled");

 	atomic_set(attr, (unsigned)enabled);
 	return count;
 }

 static inline ssize_t __store_bool_attr(char *buff, size_t count,
 			void (*post_func)(struct net_device *),
 			struct attribute *attr,
 			atomic_t *attr_store, struct net_device *net_dev)
 {
 	int ret;

 	ret = store_bool_attr(buff, count, net_dev, (char *)attr->name,
 			      attr_store);
 	if (post_func && ret)
 		post_func(net_dev);

 	return ret;
 }

 static int store_uint_attr(char *buff, size_t count,
 			   struct net_device *net_dev, char *attr_name,
 			   unsigned int min, unsigned int max, atomic_t *attr)
 {
 	unsigned long uint_val;
 	int ret;

 	ret = strict_strtoul(buff, 10, &uint_val);
 	if (ret) {
 		bat_info(net_dev,
 			 "%s: Invalid parameter received: %s\n",
 			 attr_name, buff);
 		return -EINVAL;
 	}

 	if (uint_val < min) {
 		bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
 			 attr_name, uint_val, min);
 		return -EINVAL;
 	}

 	if (uint_val > max) {
 		bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
 			 attr_name, uint_val, max);
 		return -EINVAL;
 	}

 	if (atomic_read(attr) == uint_val)
 		return count;

 	bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
 		 attr_name, atomic_read(attr), uint_val);

 	atomic_set(attr, uint_val);
 	return count;
 }

 static inline ssize_t __store_uint_attr(char *buff, size_t count,
 			int min, int max,
 			void (*post_func)(struct net_device *),
 			struct attribute *attr,
 			atomic_t *attr_store, struct net_device *net_dev)
 {
 	int ret;

 	ret = store_uint_attr(buff, count, net_dev, (char *)attr->name,
 			      min, max, attr_store);
 	if (post_func && ret)
 		post_func(net_dev);

 	return ret;
 }

 static ssize_t show_vis_mode(struct kobject *kobj, struct attribute *attr,
 			     char *buff)
 {
 	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
 	int vis_mode = atomic_read(&bat_priv->vis_mode);

 	return sprintf(buff, "%s\n",
 		       vis_mode == VIS_TYPE_CLIENT_UPDATE ?
 							"client" : "server");
 }

 static ssize_t store_vis_mode(struct kobject *kobj, struct attribute *attr,
 			      char *buff, size_t count)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);
 	struct bat_priv *bat_priv = netdev_priv(net_dev);
 	unsigned long val;
 	int ret, vis_mode_tmp = -1;

 	ret = strict_strtoul(buff, 10, &val);

 	if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) ||
 	    (strncmp(buff, "client", 6) == 0) ||
 	    (strncmp(buff, "off", 3) == 0))
 		vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;

 	if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) ||
 	    (strncmp(buff, "server", 6) == 0))
 		vis_mode_tmp = VIS_TYPE_SERVER_SYNC;

 	if (vis_mode_tmp < 0) {
 		if (buff[count - 1] == '\n')
 			buff[count - 1] = '\0';

 		bat_info(net_dev,
 			 "Invalid parameter for 'vis mode' setting received: "
 			 "%s\n", buff);
 		return -EINVAL;
 	}

 	if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
 		return count;

 	bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
 		 atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
 		 "client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
 		 "client" : "server");

 	atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp);
 	return count;
 }

 static void post_gw_deselect(struct net_device *net_dev)
 {
 	struct bat_priv *bat_priv = netdev_priv(net_dev);
 	gw_deselect(bat_priv);
 }

 static ssize_t show_gw_mode(struct kobject *kobj, struct attribute *attr,
 			    char *buff)
 {
 	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
 	int bytes_written;

 	switch (atomic_read(&bat_priv->gw_mode)) {
 	case GW_MODE_CLIENT:
 		bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
 		break;
 	case GW_MODE_SERVER:
 		bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
 		break;
 	default:
 		bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
 		break;
 	}

 	return bytes_written;
 }

 static ssize_t store_gw_mode(struct kobject *kobj, struct attribute *attr,
 			     char *buff, size_t count)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);
 	struct bat_priv *bat_priv = netdev_priv(net_dev);
 	char *curr_gw_mode_str;
 	int gw_mode_tmp = -1;

 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';

 	if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
 		gw_mode_tmp = GW_MODE_OFF;

 	if (strncmp(buff, GW_MODE_CLIENT_NAME,
 		   strlen(GW_MODE_CLIENT_NAME)) == 0)
 		gw_mode_tmp = GW_MODE_CLIENT;

 	if (strncmp(buff, GW_MODE_SERVER_NAME,
 		   strlen(GW_MODE_SERVER_NAME)) == 0)
 		gw_mode_tmp = GW_MODE_SERVER;

 	if (gw_mode_tmp < 0) {
 		bat_info(net_dev,
 			 "Invalid parameter for 'gw mode' setting received: "
 			 "%s\n", buff);
 		return -EINVAL;
 	}

 	if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
 		return count;

 	switch (atomic_read(&bat_priv->gw_mode)) {
 	case GW_MODE_CLIENT:
 		curr_gw_mode_str = GW_MODE_CLIENT_NAME;
 		break;
 	case GW_MODE_SERVER:
 		curr_gw_mode_str = GW_MODE_SERVER_NAME;
 		break;
 	default:
 		curr_gw_mode_str = GW_MODE_OFF_NAME;
 		break;
 	}

 	bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
 		 curr_gw_mode_str, buff);

 	gw_deselect(bat_priv);
 	atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp);
 	return count;
 }

 static ssize_t show_gw_bwidth(struct kobject *kobj, struct attribute *attr,
 			      char *buff)
 {
 	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
 	int down, up;
 	int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);

 	gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
 	return sprintf(buff, "%i%s/%i%s\n",
 		       (down > 2048 ? down / 1024 : down),
 		       (down > 2048 ? "MBit" : "KBit"),
 		       (up > 2048 ? up / 1024 : up),
 		       (up > 2048 ? "MBit" : "KBit"));
 }

 static ssize_t store_gw_bwidth(struct kobject *kobj, struct attribute *attr,
 			       char *buff, size_t count)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);

 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';

 	return gw_bandwidth_set(net_dev, buff, count);
 }

 BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
 BAT_ATTR_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
 BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
 static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
 static BAT_ATTR(gw_mode, S_IRUGO | S_IWUSR, show_gw_mode, store_gw_mode);
 BAT_ATTR_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * JITTER, INT_MAX, NULL);
 BAT_ATTR_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, TQ_MAX_VALUE, NULL);
 BAT_ATTR_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, TQ_MAX_VALUE,
 	      post_gw_deselect);
 static BAT_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, show_gw_bwidth,
 		store_gw_bwidth);
 #ifdef CONFIG_BATMAN_ADV_DEBUG
 BAT_ATTR_UINT(log_level, S_IRUGO | S_IWUSR, 0, 3, NULL);
 #endif

 static struct bat_attribute *mesh_attrs[] = {
 	&bat_attr_aggregated_ogms,
 	&bat_attr_bonding,
 	&bat_attr_fragmentation,
 	&bat_attr_vis_mode,
 	&bat_attr_gw_mode,
 	&bat_attr_orig_interval,
 	&bat_attr_hop_penalty,
 	&bat_attr_gw_sel_class,
 	&bat_attr_gw_bandwidth,
 #ifdef CONFIG_BATMAN_ADV_DEBUG
 	&bat_attr_log_level,
 #endif
 	NULL,
 };

 int sysfs_add_meshif(struct net_device *dev)
 {
 	struct kobject *batif_kobject = &dev->dev.kobj;
 	struct bat_priv *bat_priv = netdev_priv(dev);
 	struct bat_attribute **bat_attr;
 	int err;

 	bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
 						    batif_kobject);
 	if (!bat_priv->mesh_obj) {
 		bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
 			SYSFS_IF_MESH_SUBDIR);
 		goto out;
 	}

 	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
 		err = sysfs_create_file(bat_priv->mesh_obj,
 					&((*bat_attr)->attr));
 		if (err) {
 			bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
 				dev->name, SYSFS_IF_MESH_SUBDIR,
 				((*bat_attr)->attr).name);
 			goto rem_attr;
 		}
 	}

 	return 0;

 rem_attr:
 	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
 		sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));

 	kobject_put(bat_priv->mesh_obj);
 	bat_priv->mesh_obj = NULL;
 out:
 	return -ENOMEM;
 }

 void sysfs_del_meshif(struct net_device *dev)
 {
 	struct bat_priv *bat_priv = netdev_priv(dev);
 	struct bat_attribute **bat_attr;

 	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
 		sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));

 	kobject_put(bat_priv->mesh_obj);
 	bat_priv->mesh_obj = NULL;
 }

 static ssize_t show_mesh_iface(struct kobject *kobj, struct attribute *attr,
 			       char *buff)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);
 	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
 	ssize_t length;

 	if (!hard_iface)
 		return 0;

 	length = sprintf(buff, "%s\n", hard_iface->if_status == IF_NOT_IN_USE ?
 			 "none" : hard_iface->soft_iface->name);

 	hardif_free_ref(hard_iface);

 	return length;
 }

 static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
 				char *buff, size_t count)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);
 	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
 	int status_tmp = -1;
 	int ret = count;

 	if (!hard_iface)
 		return count;

 	if (buff[count - 1] == '\n')
 		buff[count - 1] = '\0';

 	if (strlen(buff) >= IFNAMSIZ) {
 		pr_err("Invalid parameter for 'mesh_iface' setting received: "
 		       "interface name too long '%s'\n", buff);
 		hardif_free_ref(hard_iface);
 		return -EINVAL;
 	}

 	if (strncmp(buff, "none", 4) == 0)
 		status_tmp = IF_NOT_IN_USE;
 	else
 		status_tmp = IF_I_WANT_YOU;

 	if (hard_iface->if_status == status_tmp)
 		goto out;

 	if ((hard_iface->soft_iface) &&
 	    (strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
 		goto out;

 	if (status_tmp == IF_NOT_IN_USE) {
 		rtnl_lock();
 		hardif_disable_interface(hard_iface);
 		rtnl_unlock();
 		goto out;
 	}

 	/* if the interface already is in use */
 	if (hard_iface->if_status != IF_NOT_IN_USE) {
 		rtnl_lock();
 		hardif_disable_interface(hard_iface);
 		rtnl_unlock();
 	}

 	ret = hardif_enable_interface(hard_iface, buff);

 out:
 	hardif_free_ref(hard_iface);
 	return ret;
 }

 static ssize_t show_iface_status(struct kobject *kobj, struct attribute *attr,
 				 char *buff)
 {
 	struct net_device *net_dev = kobj_to_netdev(kobj);
 	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
 	ssize_t length;

 	if (!hard_iface)
 		return 0;

 	switch (hard_iface->if_status) {
 	case IF_TO_BE_REMOVED:
 		length = sprintf(buff, "disabling\n");
 		break;
 	case IF_INACTIVE:
 		length = sprintf(buff, "inactive\n");
 		break;
 	case IF_ACTIVE:
 		length = sprintf(buff, "active\n");
 		break;
 	case IF_TO_BE_ACTIVATED:
 		length = sprintf(buff, "enabling\n");
 		break;
 	case IF_NOT_IN_USE:
 	default:
 		length = sprintf(buff, "not in use\n");
 		break;
 	}

 	hardif_free_ref(hard_iface);

 	return length;
 }

 static BAT_ATTR(mesh_iface, S_IRUGO | S_IWUSR,
 		show_mesh_iface, store_mesh_iface);
 static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);

 static struct bat_attribute *batman_attrs[] = {
 	&bat_attr_mesh_iface,
 	&bat_attr_iface_status,
 	NULL,
 };

 int sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
 {
 	struct kobject *hardif_kobject = &dev->dev.kobj;
 	struct bat_attribute **bat_attr;
 	int err;

 	*hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
 						    hardif_kobject);

 	if (!*hardif_obj) {
 		bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
 			SYSFS_IF_BAT_SUBDIR);
 		goto out;
 	}

 	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
 		err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
 		if (err) {
 			bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
 				dev->name, SYSFS_IF_BAT_SUBDIR,
 				((*bat_attr)->attr).name);
 			goto rem_attr;
 		}
 	}

 	return 0;

 rem_attr:
 	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
 		sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
 out:
 	return -ENOMEM;
 }

 void sysfs_del_hardif(struct kobject **hardif_obj)
 {
 	kobject_put(*hardif_obj);
 	*hardif_obj = NULL;
 }
	/*
	* Copyright (C) 2010-2011 B.A.T.M.A.N. contributors:
	*
	* Marek Lindner
	*
	* This program is free software; you can redistribute it and/or
	* modify it under the terms of version 2 of the GNU General Public
	* License as published by the Free Software Foundation.
	*
	* This program is distributed in the hope that it will be useful, but
	* WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	* General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	* 02110-1301, USA
	*
	*/

	#include "main.h"
	#include "bat_sysfs.h"
	#include "translation-table.h"
	#include "originator.h"
	#include "hard-interface.h"
	#include "gateway_common.h"
	#include "gateway_client.h"
	#include "vis.h"

	#define to_dev(obj) container_of(obj, struct device, kobj)
	#define kobj_to_netdev(obj) to_net_dev(to_dev(obj->parent))
	#define kobj_to_batpriv(obj) netdev_priv(kobj_to_netdev(obj))

	/* Use this, if you have customized show and store functions */
	#define BAT_ATTR(_name, _mode, _show, _store) \
	struct bat_attribute bat_attr_##_name = { \
	.attr = {.name = __stringify(_name), \
	.mode = _mode }, \
	.show = _show, \
	.store = _store, \
	};

	#define BAT_ATTR_STORE_BOOL(_name, _post_func) \
	ssize_t store_##_name(struct kobject kobj, struct attribute attr, \
	char *buff, size_t count) \
	{ \
	struct net_device *net_dev = kobj_to_netdev(kobj); \
	struct bat_priv *bat_priv = netdev_priv(net_dev); \
	return __store_bool_attr(buff, count, _post_func, attr, \
	&bat_priv->_name, net_dev); \
	}

	#define BAT_ATTR_SHOW_BOOL(_name) \
	ssize_t show_##_name(struct kobject kobj, struct attribute attr, \
	char *buff) \
	{ \
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
	return sprintf(buff, "%s\n", \
	atomic_read(&bat_priv->_name) == 0 ? \
	"disabled" : "enabled"); \
	} \

	/* Use this, if you are going to turn a [name] in bat_priv on or off */
	#define BAT_ATTR_BOOL(_name, _mode, _post_func) \
	static BAT_ATTR_STORE_BOOL(_name, _post_func) \
	static BAT_ATTR_SHOW_BOOL(_name) \
	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)


	#define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
	ssize_t store_##_name(struct kobject kobj, struct attribute attr, \
	char *buff, size_t count) \
	{ \
	struct net_device *net_dev = kobj_to_netdev(kobj); \
	struct bat_priv *bat_priv = netdev_priv(net_dev); \
	return __store_uint_attr(buff, count, _min, _max, _post_func, \
	attr, &bat_priv->_name, net_dev); \
	}

	#define BAT_ATTR_SHOW_UINT(_name) \
	ssize_t show_##_name(struct kobject kobj, struct attribute attr, \
	char *buff) \
	{ \
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
	return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
	} \

	/* Use this, if you are going to set [name] in bat_priv to unsigned integer
	* values only */
	#define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func) \
	static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
	static BAT_ATTR_SHOW_UINT(_name) \
	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)


	static int store_bool_attr(char *buff, size_t count,
	struct net_device *net_dev,
	char attr_name, atomic_t attr)
	{
	int enabled = -1;

	if (buff[count - 1] == '\n')
	buff[count - 1] = '\0';

	if ((strncmp(buff, "1", 2) == 0) \|\|
	(strncmp(buff, "enable", 7) == 0) \|\|
	(strncmp(buff, "enabled", 8) == 0))
	enabled = 1;

	if ((strncmp(buff, "0", 2) == 0) \|\|
	(strncmp(buff, "disable", 8) == 0) \|\|
	(strncmp(buff, "disabled", 9) == 0))
	enabled = 0;

	if (enabled < 0) {
	bat_info(net_dev,
	"%s: Invalid parameter received: %s\n",
	attr_name, buff);
	return -EINVAL;
	}

	if (atomic_read(attr) == enabled)
	return count;

	bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
	atomic_read(attr) == 1 ? "enabled" : "disabled",
	enabled == 1 ? "enabled" : "disabled");

	atomic_set(attr, (unsigned)enabled);
	return count;
	}

	static inline ssize_t __store_bool_attr(char *buff, size_t count,
	void (post_func)(struct net_device ),
	struct attribute *attr,
	atomic_t attr_store, struct net_device net_dev)
	{
	int ret;

	ret = store_bool_attr(buff, count, net_dev, (char *)attr->name,
	attr_store);
	if (post_func && ret)
	post_func(net_dev);

	return ret;
	}

	static int store_uint_attr(char *buff, size_t count,
	struct net_device net_dev, char attr_name,
	unsigned int min, unsigned int max, atomic_t *attr)
	{
	unsigned long uint_val;
	int ret;

	ret = strict_strtoul(buff, 10, &uint_val);
	if (ret) {
	bat_info(net_dev,
	"%s: Invalid parameter received: %s\n",
	attr_name, buff);
	return -EINVAL;
	}

	if (uint_val < min) {
	bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
	attr_name, uint_val, min);
	return -EINVAL;
	}

	if (uint_val > max) {
	bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
	attr_name, uint_val, max);
	return -EINVAL;
	}

	if (atomic_read(attr) == uint_val)
	return count;

	bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
	attr_name, atomic_read(attr), uint_val);

	atomic_set(attr, uint_val);
	return count;
	}

	static inline ssize_t __store_uint_attr(char *buff, size_t count,
	int min, int max,
	void (post_func)(struct net_device ),
	struct attribute *attr,
	atomic_t attr_store, struct net_device net_dev)
	{
	int ret;

	ret = store_uint_attr(buff, count, net_dev, (char *)attr->name,
	min, max, attr_store);
	if (post_func && ret)
	post_func(net_dev);

	return ret;
	}

	static ssize_t show_vis_mode(struct kobject kobj, struct attribute attr,
	char *buff)
	{
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	int vis_mode = atomic_read(&bat_priv->vis_mode);

	return sprintf(buff, "%s\n",
	vis_mode == VIS_TYPE_CLIENT_UPDATE ?
	"client" : "server");
	}

	static ssize_t store_vis_mode(struct kobject kobj, struct attribute attr,
	char *buff, size_t count)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);
	struct bat_priv *bat_priv = netdev_priv(net_dev);
	unsigned long val;
	int ret, vis_mode_tmp = -1;

	ret = strict_strtoul(buff, 10, &val);

	if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) \|\|
	(strncmp(buff, "client", 6) == 0) \|\|
	(strncmp(buff, "off", 3) == 0))
	vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;

	if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) \|\|
	(strncmp(buff, "server", 6) == 0))
	vis_mode_tmp = VIS_TYPE_SERVER_SYNC;

	if (vis_mode_tmp < 0) {
	if (buff[count - 1] == '\n')
	buff[count - 1] = '\0';

	bat_info(net_dev,
	"Invalid parameter for 'vis mode' setting received: "
	"%s\n", buff);
	return -EINVAL;
	}

	if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
	return count;

	bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
	atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
	"client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
	"client" : "server");

	atomic_set(&bat_priv->vis_mode, (unsigned)vis_mode_tmp);
	return count;
	}

	static void post_gw_deselect(struct net_device *net_dev)
	{
	struct bat_priv *bat_priv = netdev_priv(net_dev);
	gw_deselect(bat_priv);
	}

	static ssize_t show_gw_mode(struct kobject kobj, struct attribute attr,
	char *buff)
	{
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	int bytes_written;

	switch (atomic_read(&bat_priv->gw_mode)) {
	case GW_MODE_CLIENT:
	bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
	break;
	case GW_MODE_SERVER:
	bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
	break;
	default:
	bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
	break;
	}

	return bytes_written;
	}

	static ssize_t store_gw_mode(struct kobject kobj, struct attribute attr,
	char *buff, size_t count)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);
	struct bat_priv *bat_priv = netdev_priv(net_dev);
	char *curr_gw_mode_str;
	int gw_mode_tmp = -1;

	if (buff[count - 1] == '\n')
	buff[count - 1] = '\0';

	if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
	gw_mode_tmp = GW_MODE_OFF;

	if (strncmp(buff, GW_MODE_CLIENT_NAME,
	strlen(GW_MODE_CLIENT_NAME)) == 0)
	gw_mode_tmp = GW_MODE_CLIENT;

	if (strncmp(buff, GW_MODE_SERVER_NAME,
	strlen(GW_MODE_SERVER_NAME)) == 0)
	gw_mode_tmp = GW_MODE_SERVER;

	if (gw_mode_tmp < 0) {
	bat_info(net_dev,
	"Invalid parameter for 'gw mode' setting received: "
	"%s\n", buff);
	return -EINVAL;
	}

	if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
	return count;

	switch (atomic_read(&bat_priv->gw_mode)) {
	case GW_MODE_CLIENT:
	curr_gw_mode_str = GW_MODE_CLIENT_NAME;
	break;
	case GW_MODE_SERVER:
	curr_gw_mode_str = GW_MODE_SERVER_NAME;
	break;
	default:
	curr_gw_mode_str = GW_MODE_OFF_NAME;
	break;
	}

	bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
	curr_gw_mode_str, buff);

	gw_deselect(bat_priv);
	atomic_set(&bat_priv->gw_mode, (unsigned)gw_mode_tmp);
	return count;
	}

	static ssize_t show_gw_bwidth(struct kobject kobj, struct attribute attr,
	char *buff)
	{
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	int down, up;
	int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);

	gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
	return sprintf(buff, "%i%s/%i%s\n",
	(down > 2048 ? down / 1024 : down),
	(down > 2048 ? "MBit" : "KBit"),
	(up > 2048 ? up / 1024 : up),
	(up > 2048 ? "MBit" : "KBit"));
	}

	static ssize_t store_gw_bwidth(struct kobject kobj, struct attribute attr,
	char *buff, size_t count)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);

	if (buff[count - 1] == '\n')
	buff[count - 1] = '\0';

	return gw_bandwidth_set(net_dev, buff, count);
	}

	BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO \| S_IWUSR, NULL);
	BAT_ATTR_BOOL(bonding, S_IRUGO \| S_IWUSR, NULL);
	BAT_ATTR_BOOL(fragmentation, S_IRUGO \| S_IWUSR, update_min_mtu);
	static BAT_ATTR(vis_mode, S_IRUGO \| S_IWUSR, show_vis_mode, store_vis_mode);
	static BAT_ATTR(gw_mode, S_IRUGO \| S_IWUSR, show_gw_mode, store_gw_mode);
	BAT_ATTR_UINT(orig_interval, S_IRUGO \| S_IWUSR, 2 * JITTER, INT_MAX, NULL);
	BAT_ATTR_UINT(hop_penalty, S_IRUGO \| S_IWUSR, 0, TQ_MAX_VALUE, NULL);
	BAT_ATTR_UINT(gw_sel_class, S_IRUGO \| S_IWUSR, 1, TQ_MAX_VALUE,
	post_gw_deselect);
	static BAT_ATTR(gw_bandwidth, S_IRUGO \| S_IWUSR, show_gw_bwidth,
	store_gw_bwidth);
	#ifdef CONFIG_BATMAN_ADV_DEBUG
	BAT_ATTR_UINT(log_level, S_IRUGO \| S_IWUSR, 0, 3, NULL);
	#endif

	static struct bat_attribute *mesh_attrs[] = {
	&bat_attr_aggregated_ogms,
	&bat_attr_bonding,
	&bat_attr_fragmentation,
	&bat_attr_vis_mode,
	&bat_attr_gw_mode,
	&bat_attr_orig_interval,
	&bat_attr_hop_penalty,
	&bat_attr_gw_sel_class,
	&bat_attr_gw_bandwidth,
	#ifdef CONFIG_BATMAN_ADV_DEBUG
	&bat_attr_log_level,
	#endif
	NULL,
	};

	int sysfs_add_meshif(struct net_device *dev)
	{
	struct kobject *batif_kobject = &dev->dev.kobj;
	struct bat_priv *bat_priv = netdev_priv(dev);
	struct bat_attribute **bat_attr;
	int err;

	bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
	batif_kobject);
	if (!bat_priv->mesh_obj) {
	bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
	SYSFS_IF_MESH_SUBDIR);
	goto out;
	}

	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
	err = sysfs_create_file(bat_priv->mesh_obj,
	&((*bat_attr)->attr));
	if (err) {
	bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
	dev->name, SYSFS_IF_MESH_SUBDIR,
	((*bat_attr)->attr).name);
	goto rem_attr;
	}
	}

	return 0;

	rem_attr:
	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
	sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));

	kobject_put(bat_priv->mesh_obj);
	bat_priv->mesh_obj = NULL;
	out:
	return -ENOMEM;
	}

	void sysfs_del_meshif(struct net_device *dev)
	{
	struct bat_priv *bat_priv = netdev_priv(dev);
	struct bat_attribute **bat_attr;

	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
	sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));

	kobject_put(bat_priv->mesh_obj);
	bat_priv->mesh_obj = NULL;
	}

	static ssize_t show_mesh_iface(struct kobject kobj, struct attribute attr,
	char *buff)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);
	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
	ssize_t length;

	if (!hard_iface)
	return 0;

	length = sprintf(buff, "%s\n", hard_iface->if_status == IF_NOT_IN_USE ?
	"none" : hard_iface->soft_iface->name);

	hardif_free_ref(hard_iface);

	return length;
	}

	static ssize_t store_mesh_iface(struct kobject kobj, struct attribute attr,
	char *buff, size_t count)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);
	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
	int status_tmp = -1;
	int ret = count;

	if (!hard_iface)
	return count;

	if (buff[count - 1] == '\n')
	buff[count - 1] = '\0';

	if (strlen(buff) >= IFNAMSIZ) {
	pr_err("Invalid parameter for 'mesh_iface' setting received: "
	"interface name too long '%s'\n", buff);
	hardif_free_ref(hard_iface);
	return -EINVAL;
	}

	if (strncmp(buff, "none", 4) == 0)
	status_tmp = IF_NOT_IN_USE;
	else
	status_tmp = IF_I_WANT_YOU;

	if (hard_iface->if_status == status_tmp)
	goto out;

	if ((hard_iface->soft_iface) &&
	(strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
	goto out;

	if (status_tmp == IF_NOT_IN_USE) {
	rtnl_lock();
	hardif_disable_interface(hard_iface);
	rtnl_unlock();
	goto out;
	}

	/* if the interface already is in use */
	if (hard_iface->if_status != IF_NOT_IN_USE) {
	rtnl_lock();
	hardif_disable_interface(hard_iface);
	rtnl_unlock();
	}

	ret = hardif_enable_interface(hard_iface, buff);

	out:
	hardif_free_ref(hard_iface);
	return ret;
	}

	static ssize_t show_iface_status(struct kobject kobj, struct attribute attr,
	char *buff)
	{
	struct net_device *net_dev = kobj_to_netdev(kobj);
	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
	ssize_t length;

	if (!hard_iface)
	return 0;

	switch (hard_iface->if_status) {
	case IF_TO_BE_REMOVED:
	length = sprintf(buff, "disabling\n");
	break;
	case IF_INACTIVE:
	length = sprintf(buff, "inactive\n");
	break;
	case IF_ACTIVE:
	length = sprintf(buff, "active\n");
	break;
	case IF_TO_BE_ACTIVATED:
	length = sprintf(buff, "enabling\n");
	break;
	case IF_NOT_IN_USE:
	default:
	length = sprintf(buff, "not in use\n");
	break;
	}

	hardif_free_ref(hard_iface);

	return length;
	}

	static BAT_ATTR(mesh_iface, S_IRUGO \| S_IWUSR,
	show_mesh_iface, store_mesh_iface);
	static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);

	static struct bat_attribute *batman_attrs[] = {
	&bat_attr_mesh_iface,
	&bat_attr_iface_status,
	NULL,
	};

	int sysfs_add_hardif(struct kobject *hardif_obj, struct net_device dev)
	{
	struct kobject *hardif_kobject = &dev->dev.kobj;
	struct bat_attribute **bat_attr;
	int err;

	*hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
	hardif_kobject);

	if (!*hardif_obj) {
	bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
	SYSFS_IF_BAT_SUBDIR);
	goto out;
	}

	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
	err = sysfs_create_file(hardif_obj, &((bat_attr)->attr));
	if (err) {
	bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
	dev->name, SYSFS_IF_BAT_SUBDIR,
	((*bat_attr)->attr).name);
	goto rem_attr;
	}
	}

	return 0;

	rem_attr:
	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
	sysfs_remove_file(hardif_obj, &((bat_attr)->attr));
	out:
	return -ENOMEM;
	}

	void sysfs_del_hardif(struct kobject **hardif_obj)
	{
	kobject_put(*hardif_obj);
	*hardif_obj = NULL;
	}