[linux-2.6-block.git] / net / batman-adv / bat_sysfs.c

/*
 * Copyright (C) 2010-2012 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"

static struct net_device *kobj_to_netdev(struct kobject *obj)
{
	struct device *dev = container_of(obj->parent, struct device, kobj);
	return to_net_dev(dev);
}

static struct bat_priv *kobj_to_batpriv(struct kobject *obj)
{
	struct net_device *net_dev = kobj_to_netdev(obj);
	return netdev_priv(net_dev);
}

#define UEV_TYPE_VAR	"BATTYPE="
#define UEV_ACTION_VAR	"BATACTION="
#define UEV_DATA_VAR	"BATDATA="

static char *uev_action_str[] = {
	"add",
	"del",
	"change"
};

static char *uev_type_str[] = {
	"gw"
};

/* 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,
			   const 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 int)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, attr->name, attr_store);
	if (post_func && ret)
		post_func(net_dev);

	return ret;
}

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

	ret = kstrtoul(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(const char *buff, size_t count,
			int min, int max,
			void (*post_func)(struct net_device *),
			const struct attribute *attr,
			atomic_t *attr_store, struct net_device *net_dev)
{
	int ret;

	ret = store_uint_attr(buff, count, net_dev, 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 = kstrtoul(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 int)vis_mode_tmp);
	return count;
}

static ssize_t show_bat_algo(struct kobject *kobj, struct attribute *attr,
			    char *buff)
{
	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
}

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 int)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);
#ifdef CONFIG_BATMAN_ADV_BLA
BAT_ATTR_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL);
#endif
BAT_ATTR_BOOL(fragmentation, S_IRUGO | S_IWUSR, update_min_mtu);
BAT_ATTR_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
static BAT_ATTR(vis_mode, S_IRUGO | S_IWUSR, show_vis_mode, store_vis_mode);
static BAT_ATTR(routing_algo, S_IRUGO, show_bat_algo, NULL);
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, 15, NULL);
#endif

static struct bat_attribute *mesh_attrs[] = {
	&bat_attr_aggregated_ogms,
	&bat_attr_bonding,
#ifdef CONFIG_BATMAN_ADV_BLA
	&bat_attr_bridge_loop_avoidance,
#endif
	&bat_attr_fragmentation,
	&bat_attr_ap_isolation,
	&bat_attr_vis_mode,
	&bat_attr_routing_algo,
	&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 (!rtnl_trylock()) {
		ret = -ERESTARTSYS;
		goto out;
	}

	if (status_tmp == IF_NOT_IN_USE) {
		hardif_disable_interface(hard_iface);
		goto unlock;
	}

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

	ret = hardif_enable_interface(hard_iface, buff);

unlock:
	rtnl_unlock();
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;
}

int throw_uevent(struct bat_priv *bat_priv, enum uev_type type,
		 enum uev_action action, const char *data)
{
	int ret = -1;
	struct hard_iface *primary_if = NULL;
	struct kobject *bat_kobj;
	char *uevent_env[4] = { NULL, NULL, NULL, NULL };

	primary_if = primary_if_get_selected(bat_priv);
	if (!primary_if)
		goto out;

	bat_kobj = &primary_if->soft_iface->dev.kobj;

	uevent_env[0] = kmalloc(strlen(UEV_TYPE_VAR) +
				strlen(uev_type_str[type]) + 1,
				GFP_ATOMIC);
	if (!uevent_env[0])
		goto out;

	sprintf(uevent_env[0], "%s%s", UEV_TYPE_VAR, uev_type_str[type]);

	uevent_env[1] = kmalloc(strlen(UEV_ACTION_VAR) +
				strlen(uev_action_str[action]) + 1,
				GFP_ATOMIC);
	if (!uevent_env[1])
		goto out;

	sprintf(uevent_env[1], "%s%s", UEV_ACTION_VAR, uev_action_str[action]);

	/* If the event is DEL, ignore the data field */
	if (action != UEV_DEL) {
		uevent_env[2] = kmalloc(strlen(UEV_DATA_VAR) +
					strlen(data) + 1, GFP_ATOMIC);
		if (!uevent_env[2])
			goto out;

		sprintf(uevent_env[2], "%s%s", UEV_DATA_VAR, data);
	}

	ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
out:
	kfree(uevent_env[0]);
	kfree(uevent_env[1]);
	kfree(uevent_env[2]);

	if (primary_if)
		hardif_free_ref(primary_if);

	if (ret)
		bat_dbg(DBG_BATMAN, bat_priv,
			"Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
			uev_type_str[type], uev_action_str[action],
			(action == UEV_DEL ? "NULL" : data), ret);
	return ret;
}
Commit	Line	Data
c6c8fea2	1	/*
567db7b0	2	* Copyright (C) 2010-2012 B.A.T.M.A.N. contributors:
c6c8fea2 SE	3	*
	4	* Marek Lindner
	5	*
	6	* This program is free software; you can redistribute it and/or
	7	* modify it under the terms of version 2 of the GNU General Public
	8	* License as published by the Free Software Foundation.
	9	*
	10	* This program is distributed in the hope that it will be useful, but
	11	* WITHOUT ANY WARRANTY; without even the implied warranty of
	12	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
	13	* General Public License for more details.
	14	*
	15	* You should have received a copy of the GNU General Public License
	16	* along with this program; if not, write to the Free Software
	17	* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
	18	* 02110-1301, USA
	19	*
	20	*/
	21
	22	#include "main.h"
	23	#include "bat_sysfs.h"
	24	#include "translation-table.h"
	25	#include "originator.h"
	26	#include "hard-interface.h"
	27	#include "gateway_common.h"
	28	#include "gateway_client.h"
	29	#include "vis.h"
	30
3d222bba SE	31	static struct net_device kobj_to_netdev(struct kobject obj)
	32	{
	33	struct device *dev = container_of(obj->parent, struct device, kobj);
	34	return to_net_dev(dev);
	35	}
	36
	37	static struct bat_priv kobj_to_batpriv(struct kobject obj)
	38	{
	39	struct net_device *net_dev = kobj_to_netdev(obj);
	40	return netdev_priv(net_dev);
	41	}
c6c8fea2	42
c6bda689 AQ	43	#define UEV_TYPE_VAR "BATTYPE="
	44	#define UEV_ACTION_VAR "BATACTION="
	45	#define UEV_DATA_VAR "BATDATA="
	46
	47	static char *uev_action_str[] = {
	48	"add",
	49	"del",
	50	"change"
	51	};
	52
	53	static char *uev_type_str[] = {
	54	"gw"
	55	};
	56
c6c8fea2 SE	57	/* Use this, if you have customized show and store functions */
	58	#define BAT_ATTR(_name, _mode, _show, _store) \
	59	struct bat_attribute bat_attr_##_name = { \
	60	.attr = {.name = __stringify(_name), \
	61	.mode = _mode }, \
	62	.show = _show, \
	63	.store = _store, \
	64	};
	65
	66	#define BAT_ATTR_STORE_BOOL(_name, _post_func) \
	67	ssize_t store_##_name(struct kobject kobj, struct attribute attr, \
	68	char *buff, size_t count) \
	69	{ \
	70	struct net_device *net_dev = kobj_to_netdev(kobj); \
	71	struct bat_priv *bat_priv = netdev_priv(net_dev); \
	72	return __store_bool_attr(buff, count, _post_func, attr, \
	73	&bat_priv->_name, net_dev); \
	74	}
	75
	76	#define BAT_ATTR_SHOW_BOOL(_name) \
	77	ssize_t show_##_name(struct kobject kobj, struct attribute attr, \
	78	char *buff) \
	79	{ \
	80	struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
	81	return sprintf(buff, "%s\n", \
	82	atomic_read(&bat_priv->_name) == 0 ? \
	83	"disabled" : "enabled"); \
	84	} \
	85
	86	/* Use this, if you are going to turn a [name] in bat_priv on or off */
	87	#define BAT_ATTR_BOOL(_name, _mode, _post_func) \
	88	static BAT_ATTR_STORE_BOOL(_name, _post_func) \
	89	static BAT_ATTR_SHOW_BOOL(_name) \
	90	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
	91
	92
	93	#define BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
	94	ssize_t store_##_name(struct kobject kobj, struct attribute attr, \
	95	char *buff, size_t count) \
	96	{ \
	97	struct net_device *net_dev = kobj_to_netdev(kobj); \
	98	struct bat_priv *bat_priv = netdev_priv(net_dev); \
	99	return __store_uint_attr(buff, count, _min, _max, _post_func, \
	100	attr, &bat_priv->_name, net_dev); \
	101	}
	102
	103	#define BAT_ATTR_SHOW_UINT(_name) \
	104	ssize_t show_##_name(struct kobject kobj, struct attribute attr, \
	105	char *buff) \
	106	{ \
	107	struct bat_priv *bat_priv = kobj_to_batpriv(kobj); \
	108	return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
	109	} \
	110
	111	/* Use this, if you are going to set [name] in bat_priv to unsigned integer
	112	* values only */
	113	#define BAT_ATTR_UINT(_name, _mode, _min, _max, _post_func) \
	114	static BAT_ATTR_STORE_UINT(_name, _min, _max, _post_func) \
	115	static BAT_ATTR_SHOW_UINT(_name) \
	116	static BAT_ATTR(_name, _mode, show_##_name, store_##_name)
	117
	118
	119	static int store_bool_attr(char *buff, size_t count,
	120	struct net_device *net_dev,
747e4221	121	const char attr_name, atomic_t attr)
c6c8fea2 SE	122	{
	123	int enabled = -1;
	124
	125	if (buff[count - 1] == '\n')
	126	buff[count - 1] = '\0';
	127
	128	if ((strncmp(buff, "1", 2) == 0) \|\|
	129	(strncmp(buff, "enable", 7) == 0) \|\|
	130	(strncmp(buff, "enabled", 8) == 0))
	131	enabled = 1;
	132
	133	if ((strncmp(buff, "0", 2) == 0) \|\|
	134	(strncmp(buff, "disable", 8) == 0) \|\|
	135	(strncmp(buff, "disabled", 9) == 0))
	136	enabled = 0;
	137
	138	if (enabled < 0) {
	139	bat_info(net_dev,
	140	"%s: Invalid parameter received: %s\n",
	141	attr_name, buff);
	142	return -EINVAL;
	143	}
	144
	145	if (atomic_read(attr) == enabled)
	146	return count;
	147
	148	bat_info(net_dev, "%s: Changing from: %s to: %s\n", attr_name,
	149	atomic_read(attr) == 1 ? "enabled" : "disabled",
	150	enabled == 1 ? "enabled" : "disabled");
	151
95c96174	152	atomic_set(attr, (unsigned int)enabled);
c6c8fea2 SE	153	return count;
	154	}
	155
	156	static inline ssize_t __store_bool_attr(char *buff, size_t count,
	157	void (post_func)(struct net_device ),
	158	struct attribute *attr,
	159	atomic_t attr_store, struct net_device net_dev)
	160	{
	161	int ret;
	162
747e4221	163	ret = store_bool_attr(buff, count, net_dev, attr->name, attr_store);
c6c8fea2 SE	164	if (post_func && ret)
	165	post_func(net_dev);
	166
	167	return ret;
	168	}
	169
747e4221 SE	170	static int store_uint_attr(const char *buff, size_t count,
747e4221 SE	171	struct net_device net_dev, const char attr_name,
c6c8fea2 SE	172	unsigned int min, unsigned int max, atomic_t *attr)
	173	{
	174	unsigned long uint_val;
	175	int ret;
	176
25a92b13	177	ret = kstrtoul(buff, 10, &uint_val);
c6c8fea2 SE	178	if (ret) {
	179	bat_info(net_dev,
	180	"%s: Invalid parameter received: %s\n",
	181	attr_name, buff);
	182	return -EINVAL;
	183	}
	184
	185	if (uint_val < min) {
	186	bat_info(net_dev, "%s: Value is too small: %lu min: %u\n",
	187	attr_name, uint_val, min);
	188	return -EINVAL;
	189	}
	190
	191	if (uint_val > max) {
	192	bat_info(net_dev, "%s: Value is too big: %lu max: %u\n",
	193	attr_name, uint_val, max);
	194	return -EINVAL;
	195	}
	196
	197	if (atomic_read(attr) == uint_val)
	198	return count;
	199
	200	bat_info(net_dev, "%s: Changing from: %i to: %lu\n",
	201	attr_name, atomic_read(attr), uint_val);
	202
	203	atomic_set(attr, uint_val);
	204	return count;
	205	}
	206
747e4221	207	static inline ssize_t __store_uint_attr(const char *buff, size_t count,
c6c8fea2 SE	208	int min, int max,
c6c8fea2 SE	209	void (post_func)(struct net_device ),
747e4221	210	const struct attribute *attr,
c6c8fea2 SE	211	atomic_t attr_store, struct net_device net_dev)
	212	{
	213	int ret;
	214
747e4221	215	ret = store_uint_attr(buff, count, net_dev, attr->name,
c6c8fea2 SE	216	min, max, attr_store);
	217	if (post_func && ret)
	218	post_func(net_dev);
	219
	220	return ret;
	221	}
	222
	223	static ssize_t show_vis_mode(struct kobject kobj, struct attribute attr,
	224	char *buff)
	225	{
	226	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	227	int vis_mode = atomic_read(&bat_priv->vis_mode);
	228
	229	return sprintf(buff, "%s\n",
	230	vis_mode == VIS_TYPE_CLIENT_UPDATE ?
	231	"client" : "server");
	232	}
	233
	234	static ssize_t store_vis_mode(struct kobject kobj, struct attribute attr,
	235	char *buff, size_t count)
	236	{
	237	struct net_device *net_dev = kobj_to_netdev(kobj);
	238	struct bat_priv *bat_priv = netdev_priv(net_dev);
	239	unsigned long val;
	240	int ret, vis_mode_tmp = -1;
	241
25a92b13	242	ret = kstrtoul(buff, 10, &val);
c6c8fea2 SE	243
	244	if (((count == 2) && (!ret) && (val == VIS_TYPE_CLIENT_UPDATE)) \|\|
	245	(strncmp(buff, "client", 6) == 0) \|\|
	246	(strncmp(buff, "off", 3) == 0))
	247	vis_mode_tmp = VIS_TYPE_CLIENT_UPDATE;
	248
	249	if (((count == 2) && (!ret) && (val == VIS_TYPE_SERVER_SYNC)) \|\|
	250	(strncmp(buff, "server", 6) == 0))
	251	vis_mode_tmp = VIS_TYPE_SERVER_SYNC;
	252
	253	if (vis_mode_tmp < 0) {
	254	if (buff[count - 1] == '\n')
	255	buff[count - 1] = '\0';
	256
	257	bat_info(net_dev,
86ceb360 SE	258	"Invalid parameter for 'vis mode' setting received: %s\n",
86ceb360 SE	259	buff);
c6c8fea2 SE	260	return -EINVAL;
	261	}
	262
	263	if (atomic_read(&bat_priv->vis_mode) == vis_mode_tmp)
	264	return count;
	265
	266	bat_info(net_dev, "Changing vis mode from: %s to: %s\n",
	267	atomic_read(&bat_priv->vis_mode) == VIS_TYPE_CLIENT_UPDATE ?
	268	"client" : "server", vis_mode_tmp == VIS_TYPE_CLIENT_UPDATE ?
	269	"client" : "server");
	270
95c96174	271	atomic_set(&bat_priv->vis_mode, (unsigned int)vis_mode_tmp);
c6c8fea2 SE	272	return count;
	273	}
	274
ea3d2fd1 ML	275	static ssize_t show_bat_algo(struct kobject kobj, struct attribute attr,
	276	char *buff)
	277	{
	278	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	279	return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
	280	}
	281
c6c8fea2 SE	282	static void post_gw_deselect(struct net_device *net_dev)
	283	{
	284	struct bat_priv *bat_priv = netdev_priv(net_dev);
	285	gw_deselect(bat_priv);
	286	}
	287
	288	static ssize_t show_gw_mode(struct kobject kobj, struct attribute attr,
	289	char *buff)
	290	{
	291	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	292	int bytes_written;
	293
	294	switch (atomic_read(&bat_priv->gw_mode)) {
	295	case GW_MODE_CLIENT:
	296	bytes_written = sprintf(buff, "%s\n", GW_MODE_CLIENT_NAME);
	297	break;
	298	case GW_MODE_SERVER:
	299	bytes_written = sprintf(buff, "%s\n", GW_MODE_SERVER_NAME);
	300	break;
	301	default:
	302	bytes_written = sprintf(buff, "%s\n", GW_MODE_OFF_NAME);
	303	break;
	304	}
	305
	306	return bytes_written;
	307	}
	308
	309	static ssize_t store_gw_mode(struct kobject kobj, struct attribute attr,
	310	char *buff, size_t count)
	311	{
	312	struct net_device *net_dev = kobj_to_netdev(kobj);
	313	struct bat_priv *bat_priv = netdev_priv(net_dev);
	314	char *curr_gw_mode_str;
	315	int gw_mode_tmp = -1;
	316
	317	if (buff[count - 1] == '\n')
	318	buff[count - 1] = '\0';
	319
	320	if (strncmp(buff, GW_MODE_OFF_NAME, strlen(GW_MODE_OFF_NAME)) == 0)
	321	gw_mode_tmp = GW_MODE_OFF;
	322
	323	if (strncmp(buff, GW_MODE_CLIENT_NAME,
7c64fd98	324	strlen(GW_MODE_CLIENT_NAME)) == 0)
c6c8fea2 SE	325	gw_mode_tmp = GW_MODE_CLIENT;
	326
	327	if (strncmp(buff, GW_MODE_SERVER_NAME,
7c64fd98	328	strlen(GW_MODE_SERVER_NAME)) == 0)
c6c8fea2 SE	329	gw_mode_tmp = GW_MODE_SERVER;
	330
	331	if (gw_mode_tmp < 0) {
	332	bat_info(net_dev,
86ceb360 SE	333	"Invalid parameter for 'gw mode' setting received: %s\n",
86ceb360 SE	334	buff);
c6c8fea2 SE	335	return -EINVAL;
	336	}
	337
	338	if (atomic_read(&bat_priv->gw_mode) == gw_mode_tmp)
	339	return count;
	340
	341	switch (atomic_read(&bat_priv->gw_mode)) {
	342	case GW_MODE_CLIENT:
	343	curr_gw_mode_str = GW_MODE_CLIENT_NAME;
	344	break;
	345	case GW_MODE_SERVER:
	346	curr_gw_mode_str = GW_MODE_SERVER_NAME;
	347	break;
	348	default:
	349	curr_gw_mode_str = GW_MODE_OFF_NAME;
	350	break;
	351	}
	352
	353	bat_info(net_dev, "Changing gw mode from: %s to: %s\n",
	354	curr_gw_mode_str, buff);
	355
	356	gw_deselect(bat_priv);
95c96174	357	atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
c6c8fea2 SE	358	return count;
	359	}
	360
	361	static ssize_t show_gw_bwidth(struct kobject kobj, struct attribute attr,
	362	char *buff)
	363	{
	364	struct bat_priv *bat_priv = kobj_to_batpriv(kobj);
	365	int down, up;
	366	int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
	367
	368	gw_bandwidth_to_kbit(gw_bandwidth, &down, &up);
	369	return sprintf(buff, "%i%s/%i%s\n",
	370	(down > 2048 ? down / 1024 : down),
	371	(down > 2048 ? "MBit" : "KBit"),
	372	(up > 2048 ? up / 1024 : up),
	373	(up > 2048 ? "MBit" : "KBit"));
	374	}
	375
	376	static ssize_t store_gw_bwidth(struct kobject kobj, struct attribute attr,
	377	char *buff, size_t count)
	378	{
	379	struct net_device *net_dev = kobj_to_netdev(kobj);
	380
	381	if (buff[count - 1] == '\n')
	382	buff[count - 1] = '\0';
	383
	384	return gw_bandwidth_set(net_dev, buff, count);
	385	}
	386
	387	BAT_ATTR_BOOL(aggregated_ogms, S_IRUGO \| S_IWUSR, NULL);
	388	BAT_ATTR_BOOL(bonding, S_IRUGO \| S_IWUSR, NULL);
7a5cc242	389	#ifdef CONFIG_BATMAN_ADV_BLA
c8673055	390	BAT_ATTR_BOOL(bridge_loop_avoidance, S_IRUGO \| S_IWUSR, NULL);
7a5cc242	391	#endif
c6c8fea2	392	BAT_ATTR_BOOL(fragmentation, S_IRUGO \| S_IWUSR, update_min_mtu);
59b699cd	393	BAT_ATTR_BOOL(ap_isolation, S_IRUGO \| S_IWUSR, NULL);
c6c8fea2	394	static BAT_ATTR(vis_mode, S_IRUGO \| S_IWUSR, show_vis_mode, store_vis_mode);
ea3d2fd1	395	static BAT_ATTR(routing_algo, S_IRUGO, show_bat_algo, NULL);
c6c8fea2 SE	396	static BAT_ATTR(gw_mode, S_IRUGO \| S_IWUSR, show_gw_mode, store_gw_mode);
	397	BAT_ATTR_UINT(orig_interval, S_IRUGO \| S_IWUSR, 2 * JITTER, INT_MAX, NULL);
	398	BAT_ATTR_UINT(hop_penalty, S_IRUGO \| S_IWUSR, 0, TQ_MAX_VALUE, NULL);
	399	BAT_ATTR_UINT(gw_sel_class, S_IRUGO \| S_IWUSR, 1, TQ_MAX_VALUE,
	400	post_gw_deselect);
	401	static BAT_ATTR(gw_bandwidth, S_IRUGO \| S_IWUSR, show_gw_bwidth,
	402	store_gw_bwidth);
	403	#ifdef CONFIG_BATMAN_ADV_DEBUG
23721387	404	BAT_ATTR_UINT(log_level, S_IRUGO \| S_IWUSR, 0, 15, NULL);
c6c8fea2 SE	405	#endif
	406
	407	static struct bat_attribute *mesh_attrs[] = {
	408	&bat_attr_aggregated_ogms,
	409	&bat_attr_bonding,
7a5cc242	410	#ifdef CONFIG_BATMAN_ADV_BLA
c8673055	411	&bat_attr_bridge_loop_avoidance,
7a5cc242	412	#endif
c6c8fea2	413	&bat_attr_fragmentation,
59b699cd	414	&bat_attr_ap_isolation,
c6c8fea2	415	&bat_attr_vis_mode,
ea3d2fd1	416	&bat_attr_routing_algo,
c6c8fea2 SE	417	&bat_attr_gw_mode,
	418	&bat_attr_orig_interval,
	419	&bat_attr_hop_penalty,
	420	&bat_attr_gw_sel_class,
	421	&bat_attr_gw_bandwidth,
	422	#ifdef CONFIG_BATMAN_ADV_DEBUG
	423	&bat_attr_log_level,
	424	#endif
	425	NULL,
	426	};
	427
	428	int sysfs_add_meshif(struct net_device *dev)
	429	{
	430	struct kobject *batif_kobject = &dev->dev.kobj;
	431	struct bat_priv *bat_priv = netdev_priv(dev);
	432	struct bat_attribute **bat_attr;
	433	int err;
	434
	435	bat_priv->mesh_obj = kobject_create_and_add(SYSFS_IF_MESH_SUBDIR,
	436	batif_kobject);
	437	if (!bat_priv->mesh_obj) {
	438	bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
	439	SYSFS_IF_MESH_SUBDIR);
	440	goto out;
	441	}
	442
	443	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr) {
	444	err = sysfs_create_file(bat_priv->mesh_obj,
	445	&((*bat_attr)->attr));
	446	if (err) {
	447	bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
	448	dev->name, SYSFS_IF_MESH_SUBDIR,
	449	((*bat_attr)->attr).name);
	450	goto rem_attr;
	451	}
	452	}
	453
	454	return 0;
	455
	456	rem_attr:
	457	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
	458	sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
	459
	460	kobject_put(bat_priv->mesh_obj);
	461	bat_priv->mesh_obj = NULL;
	462	out:
	463	return -ENOMEM;
	464	}
	465
	466	void sysfs_del_meshif(struct net_device *dev)
	467	{
	468	struct bat_priv *bat_priv = netdev_priv(dev);
	469	struct bat_attribute **bat_attr;
	470
	471	for (bat_attr = mesh_attrs; *bat_attr; ++bat_attr)
	472	sysfs_remove_file(bat_priv->mesh_obj, &((*bat_attr)->attr));
	473
	474	kobject_put(bat_priv->mesh_obj);
	475	bat_priv->mesh_obj = NULL;
	476	}
	477
	478	static ssize_t show_mesh_iface(struct kobject kobj, struct attribute attr,
	479	char *buff)
	480	{
481	struct net_device *net_dev = kobj_to_netdev(kobj);
e6c10f43	482	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
c6c8fea2 SE	483	ssize_t length;
c6c8fea2 SE	484
e6c10f43	485	if (!hard_iface)
c6c8fea2 SE	486	return 0;
c6c8fea2 SE	487
e6c10f43 ML	488	length = sprintf(buff, "%s\n", hard_iface->if_status == IF_NOT_IN_USE ?
e6c10f43 ML	489	"none" : hard_iface->soft_iface->name);
c6c8fea2	490
e6c10f43	491	hardif_free_ref(hard_iface);
c6c8fea2 SE	492
	493	return length;
	494	}
	495
	496	static ssize_t store_mesh_iface(struct kobject kobj, struct attribute attr,
	497	char *buff, size_t count)
	498	{
	499	struct net_device *net_dev = kobj_to_netdev(kobj);
e6c10f43	500	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
c6c8fea2	501	int status_tmp = -1;
ed75ccbe	502	int ret = count;
c6c8fea2	503
e6c10f43	504	if (!hard_iface)
c6c8fea2 SE	505	return count;
	506
	507	if (buff[count - 1] == '\n')
	508	buff[count - 1] = '\0';
	509
	510	if (strlen(buff) >= IFNAMSIZ) {
86ceb360 SE	511	pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n",
86ceb360 SE	512	buff);
e6c10f43	513	hardif_free_ref(hard_iface);
c6c8fea2 SE	514	return -EINVAL;
	515	}
	516
	517	if (strncmp(buff, "none", 4) == 0)
	518	status_tmp = IF_NOT_IN_USE;
	519	else
	520	status_tmp = IF_I_WANT_YOU;
	521
e6c10f43 ML	522	if (hard_iface->if_status == status_tmp)
	523	goto out;
	524
	525	if ((hard_iface->soft_iface) &&
	526	(strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
ed75ccbe	527	goto out;
c6c8fea2	528
3a4375a9 SE	529	if (!rtnl_trylock()) {
	530	ret = -ERESTARTSYS;
	531	goto out;
	532	}
	533
c6c8fea2	534	if (status_tmp == IF_NOT_IN_USE) {
e6c10f43	535	hardif_disable_interface(hard_iface);
3a4375a9	536	goto unlock;
c6c8fea2 SE	537	}
	538
	539	/* if the interface already is in use */
3a4375a9	540	if (hard_iface->if_status != IF_NOT_IN_USE)
e6c10f43	541	hardif_disable_interface(hard_iface);
c6c8fea2	542
e6c10f43	543	ret = hardif_enable_interface(hard_iface, buff);
c6c8fea2	544
3a4375a9 SE	545	unlock:
3a4375a9 SE	546	rtnl_unlock();
ed75ccbe	547	out:
e6c10f43	548	hardif_free_ref(hard_iface);
c6c8fea2 SE	549	return ret;
	550	}
	551
	552	static ssize_t show_iface_status(struct kobject kobj, struct attribute attr,
	553	char *buff)
	554	{
	555	struct net_device *net_dev = kobj_to_netdev(kobj);
e6c10f43	556	struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
c6c8fea2 SE	557	ssize_t length;
c6c8fea2 SE	558
e6c10f43	559	if (!hard_iface)
c6c8fea2 SE	560	return 0;
c6c8fea2 SE	561
e6c10f43	562	switch (hard_iface->if_status) {
c6c8fea2 SE	563	case IF_TO_BE_REMOVED:
	564	length = sprintf(buff, "disabling\n");
	565	break;
	566	case IF_INACTIVE:
	567	length = sprintf(buff, "inactive\n");
	568	break;
	569	case IF_ACTIVE:
	570	length = sprintf(buff, "active\n");
	571	break;
	572	case IF_TO_BE_ACTIVATED:
	573	length = sprintf(buff, "enabling\n");
	574	break;
	575	case IF_NOT_IN_USE:
	576	default:
	577	length = sprintf(buff, "not in use\n");
	578	break;
	579	}
	580
e6c10f43	581	hardif_free_ref(hard_iface);
c6c8fea2 SE	582
	583	return length;
	584	}
	585
	586	static BAT_ATTR(mesh_iface, S_IRUGO \| S_IWUSR,
	587	show_mesh_iface, store_mesh_iface);
	588	static BAT_ATTR(iface_status, S_IRUGO, show_iface_status, NULL);
	589
	590	static struct bat_attribute *batman_attrs[] = {
	591	&bat_attr_mesh_iface,
	592	&bat_attr_iface_status,
	593	NULL,
	594	};
	595
	596	int sysfs_add_hardif(struct kobject *hardif_obj, struct net_device dev)
	597	{
	598	struct kobject *hardif_kobject = &dev->dev.kobj;
	599	struct bat_attribute **bat_attr;
	600	int err;
	601
	602	*hardif_obj = kobject_create_and_add(SYSFS_IF_BAT_SUBDIR,
	603	hardif_kobject);
	604
	605	if (!*hardif_obj) {
	606	bat_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
	607	SYSFS_IF_BAT_SUBDIR);
	608	goto out;
	609	}
	610
	611	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr) {
	612	err = sysfs_create_file(hardif_obj, &((bat_attr)->attr));
	613	if (err) {
	614	bat_err(dev, "Can't add sysfs file: %s/%s/%s\n",
	615	dev->name, SYSFS_IF_BAT_SUBDIR,
	616	((*bat_attr)->attr).name);
	617	goto rem_attr;
	618	}
	619	}
	620
	621	return 0;
	622
	623	rem_attr:
	624	for (bat_attr = batman_attrs; *bat_attr; ++bat_attr)
	625	sysfs_remove_file(hardif_obj, &((bat_attr)->attr));
	626	out:
	627	return -ENOMEM;
	628	}
	629
	630	void sysfs_del_hardif(struct kobject **hardif_obj)
	631	{
	632	kobject_put(*hardif_obj);
	633	*hardif_obj = NULL;
	634	}
c6bda689 AQ	635
	636	int throw_uevent(struct bat_priv *bat_priv, enum uev_type type,
	637	enum uev_action action, const char *data)
	638	{
	639	int ret = -1;
	640	struct hard_iface *primary_if = NULL;
	641	struct kobject *bat_kobj;
	642	char *uevent_env[4] = { NULL, NULL, NULL, NULL };
	643
	644	primary_if = primary_if_get_selected(bat_priv);
	645	if (!primary_if)
	646	goto out;
	647
	648	bat_kobj = &primary_if->soft_iface->dev.kobj;
	649
	650	uevent_env[0] = kmalloc(strlen(UEV_TYPE_VAR) +
	651	strlen(uev_type_str[type]) + 1,
	652	GFP_ATOMIC);
	653	if (!uevent_env[0])
	654	goto out;
	655
	656	sprintf(uevent_env[0], "%s%s", UEV_TYPE_VAR, uev_type_str[type]);
	657
	658	uevent_env[1] = kmalloc(strlen(UEV_ACTION_VAR) +
	659	strlen(uev_action_str[action]) + 1,
	660	GFP_ATOMIC);
	661	if (!uevent_env[1])
	662	goto out;
	663
	664	sprintf(uevent_env[1], "%s%s", UEV_ACTION_VAR, uev_action_str[action]);
	665
	666	/* If the event is DEL, ignore the data field */
	667	if (action != UEV_DEL) {
	668	uevent_env[2] = kmalloc(strlen(UEV_DATA_VAR) +
	669	strlen(data) + 1, GFP_ATOMIC);
	670	if (!uevent_env[2])
	671	goto out;
	672
	673	sprintf(uevent_env[2], "%s%s", UEV_DATA_VAR, data);
	674	}
	675
	676	ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
	677	out:
	678	kfree(uevent_env[0]);
	679	kfree(uevent_env[1]);
	680	kfree(uevent_env[2]);
	681
	682	if (primary_if)
	683	hardif_free_ref(primary_if);
	684
	685	if (ret)
86ceb360 SE	686	bat_dbg(DBG_BATMAN, bat_priv,
86ceb360 SE	687	"Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
c6bda689 AQ	688	uev_type_str[type], uev_action_str[action],
	689	(action == UEV_DEL ? "NULL" : data), ret);
	690	return ret;
	691	}