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-rw-r--r--net/batman-adv/sysfs.c787
1 files changed, 787 insertions, 0 deletions
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c
new file mode 100644
index 000000000000..66518c75c217
--- /dev/null
+++ b/net/batman-adv/sysfs.c
@@ -0,0 +1,787 @@
+/* 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 "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 *batadv_kobj_to_netdev(struct kobject *obj)
+{
+ struct device *dev = container_of(obj->parent, struct device, kobj);
+ return to_net_dev(dev);
+}
+
+static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(obj);
+ return netdev_priv(net_dev);
+}
+
+#define BATADV_UEV_TYPE_VAR "BATTYPE="
+#define BATADV_UEV_ACTION_VAR "BATACTION="
+#define BATADV_UEV_DATA_VAR "BATDATA="
+
+static char *batadv_uev_action_str[] = {
+ "add",
+ "del",
+ "change"
+};
+
+static char *batadv_uev_type_str[] = {
+ "gw"
+};
+
+/* Use this, if you have customized show and store functions */
+#define BATADV_ATTR(_name, _mode, _show, _store) \
+struct batadv_attribute batadv_attr_##_name = { \
+ .attr = {.name = __stringify(_name), \
+ .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
+};
+
+#define BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
+ssize_t batadv_store_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff, \
+ size_t count) \
+{ \
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
+ struct batadv_priv *bat_priv = netdev_priv(net_dev); \
+ return __batadv_store_bool_attr(buff, count, _post_func, attr, \
+ &bat_priv->_name, net_dev); \
+}
+
+#define BATADV_ATTR_SIF_SHOW_BOOL(_name) \
+ssize_t batadv_show_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff) \
+{ \
+ struct batadv_priv *bat_priv = batadv_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 the soft-interface
+ * (bat_priv) on or off
+ */
+#define BATADV_ATTR_SIF_BOOL(_name, _mode, _post_func) \
+ static BATADV_ATTR_SIF_STORE_BOOL(_name, _post_func) \
+ static BATADV_ATTR_SIF_SHOW_BOOL(_name) \
+ static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
+ batadv_store_##_name)
+
+
+#define BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func) \
+ssize_t batadv_store_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff, \
+ size_t count) \
+{ \
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
+ struct batadv_priv *bat_priv = netdev_priv(net_dev); \
+ return __batadv_store_uint_attr(buff, count, _min, _max, \
+ _post_func, attr, \
+ &bat_priv->_name, net_dev); \
+}
+
+#define BATADV_ATTR_SIF_SHOW_UINT(_name) \
+ssize_t batadv_show_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff) \
+{ \
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \
+ return sprintf(buff, "%i\n", atomic_read(&bat_priv->_name)); \
+} \
+
+/* Use this, if you are going to set [name] in the soft-interface
+ * (bat_priv) to an unsigned integer value
+ */
+#define BATADV_ATTR_SIF_UINT(_name, _mode, _min, _max, _post_func) \
+ static BATADV_ATTR_SIF_STORE_UINT(_name, _min, _max, _post_func)\
+ static BATADV_ATTR_SIF_SHOW_UINT(_name) \
+ static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
+ batadv_store_##_name)
+
+
+#define BATADV_ATTR_HIF_STORE_UINT(_name, _min, _max, _post_func) \
+ssize_t batadv_store_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff, \
+ size_t count) \
+{ \
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
+ struct batadv_hard_iface *hard_iface; \
+ ssize_t length; \
+ \
+ hard_iface = batadv_hardif_get_by_netdev(net_dev); \
+ if (!hard_iface) \
+ return 0; \
+ \
+ length = __batadv_store_uint_attr(buff, count, _min, _max, \
+ _post_func, attr, \
+ &hard_iface->_name, net_dev); \
+ \
+ batadv_hardif_free_ref(hard_iface); \
+ return length; \
+}
+
+#define BATADV_ATTR_HIF_SHOW_UINT(_name) \
+ssize_t batadv_show_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff) \
+{ \
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj); \
+ struct batadv_hard_iface *hard_iface; \
+ ssize_t length; \
+ \
+ hard_iface = batadv_hardif_get_by_netdev(net_dev); \
+ if (!hard_iface) \
+ return 0; \
+ \
+ length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_name));\
+ \
+ batadv_hardif_free_ref(hard_iface); \
+ return length; \
+}
+
+/* Use this, if you are going to set [name] in hard_iface to an
+ * unsigned integer value
+ */
+#define BATADV_ATTR_HIF_UINT(_name, _mode, _min, _max, _post_func) \
+ static BATADV_ATTR_HIF_STORE_UINT(_name, _min, _max, _post_func)\
+ static BATADV_ATTR_HIF_SHOW_UINT(_name) \
+ static BATADV_ATTR(_name, _mode, batadv_show_##_name, \
+ batadv_store_##_name)
+
+
+static int batadv_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) {
+ batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
+ attr_name, buff);
+ return -EINVAL;
+ }
+
+ if (atomic_read(attr) == enabled)
+ return count;
+
+ batadv_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
+__batadv_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 = batadv_store_bool_attr(buff, count, net_dev, attr->name,
+ attr_store);
+ if (post_func && ret)
+ post_func(net_dev);
+
+ return ret;
+}
+
+static int batadv_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) {
+ batadv_info(net_dev, "%s: Invalid parameter received: %s\n",
+ attr_name, buff);
+ return -EINVAL;
+ }
+
+ if (uint_val < min) {
+ batadv_info(net_dev, "%s: Value is too small: %lu min: %u\n",
+ attr_name, uint_val, min);
+ return -EINVAL;
+ }
+
+ if (uint_val > max) {
+ batadv_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;
+
+ batadv_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
+__batadv_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 = batadv_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 batadv_show_vis_mode(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
+ int vis_mode = atomic_read(&bat_priv->vis_mode);
+ const char *mode;
+
+ if (vis_mode == BATADV_VIS_TYPE_CLIENT_UPDATE)
+ mode = "client";
+ else
+ mode = "server";
+
+ return sprintf(buff, "%s\n", mode);
+}
+
+static ssize_t batadv_store_vis_mode(struct kobject *kobj,
+ struct attribute *attr, char *buff,
+ size_t count)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+ unsigned long val;
+ int ret, vis_mode_tmp = -1;
+ const char *old_mode, *new_mode;
+
+ ret = kstrtoul(buff, 10, &val);
+
+ if (((count == 2) && (!ret) &&
+ (val == BATADV_VIS_TYPE_CLIENT_UPDATE)) ||
+ (strncmp(buff, "client", 6) == 0) ||
+ (strncmp(buff, "off", 3) == 0))
+ vis_mode_tmp = BATADV_VIS_TYPE_CLIENT_UPDATE;
+
+ if (((count == 2) && (!ret) &&
+ (val == BATADV_VIS_TYPE_SERVER_SYNC)) ||
+ (strncmp(buff, "server", 6) == 0))
+ vis_mode_tmp = BATADV_VIS_TYPE_SERVER_SYNC;
+
+ if (vis_mode_tmp < 0) {
+ if (buff[count - 1] == '\n')
+ buff[count - 1] = '\0';
+
+ batadv_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;
+
+ if (atomic_read(&bat_priv->vis_mode) == BATADV_VIS_TYPE_CLIENT_UPDATE)
+ old_mode = "client";
+ else
+ old_mode = "server";
+
+ if (vis_mode_tmp == BATADV_VIS_TYPE_CLIENT_UPDATE)
+ new_mode = "client";
+ else
+ new_mode = "server";
+
+ batadv_info(net_dev, "Changing vis mode from: %s to: %s\n", old_mode,
+ new_mode);
+
+ atomic_set(&bat_priv->vis_mode, (unsigned int)vis_mode_tmp);
+ return count;
+}
+
+static ssize_t batadv_show_bat_algo(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
+ return sprintf(buff, "%s\n", bat_priv->bat_algo_ops->name);
+}
+
+static void batadv_post_gw_deselect(struct net_device *net_dev)
+{
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+ batadv_gw_deselect(bat_priv);
+}
+
+static ssize_t batadv_show_gw_mode(struct kobject *kobj, struct attribute *attr,
+ char *buff)
+{
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
+ int bytes_written;
+
+ switch (atomic_read(&bat_priv->gw_mode)) {
+ case BATADV_GW_MODE_CLIENT:
+ bytes_written = sprintf(buff, "%s\n",
+ BATADV_GW_MODE_CLIENT_NAME);
+ break;
+ case BATADV_GW_MODE_SERVER:
+ bytes_written = sprintf(buff, "%s\n",
+ BATADV_GW_MODE_SERVER_NAME);
+ break;
+ default:
+ bytes_written = sprintf(buff, "%s\n",
+ BATADV_GW_MODE_OFF_NAME);
+ break;
+ }
+
+ return bytes_written;
+}
+
+static ssize_t batadv_store_gw_mode(struct kobject *kobj,
+ struct attribute *attr, char *buff,
+ size_t count)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+ struct batadv_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, BATADV_GW_MODE_OFF_NAME,
+ strlen(BATADV_GW_MODE_OFF_NAME)) == 0)
+ gw_mode_tmp = BATADV_GW_MODE_OFF;
+
+ if (strncmp(buff, BATADV_GW_MODE_CLIENT_NAME,
+ strlen(BATADV_GW_MODE_CLIENT_NAME)) == 0)
+ gw_mode_tmp = BATADV_GW_MODE_CLIENT;
+
+ if (strncmp(buff, BATADV_GW_MODE_SERVER_NAME,
+ strlen(BATADV_GW_MODE_SERVER_NAME)) == 0)
+ gw_mode_tmp = BATADV_GW_MODE_SERVER;
+
+ if (gw_mode_tmp < 0) {
+ batadv_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 BATADV_GW_MODE_CLIENT:
+ curr_gw_mode_str = BATADV_GW_MODE_CLIENT_NAME;
+ break;
+ case BATADV_GW_MODE_SERVER:
+ curr_gw_mode_str = BATADV_GW_MODE_SERVER_NAME;
+ break;
+ default:
+ curr_gw_mode_str = BATADV_GW_MODE_OFF_NAME;
+ break;
+ }
+
+ batadv_info(net_dev, "Changing gw mode from: %s to: %s\n",
+ curr_gw_mode_str, buff);
+
+ batadv_gw_deselect(bat_priv);
+ atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
+ return count;
+}
+
+static ssize_t batadv_show_gw_bwidth(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
+ int down, up;
+ int gw_bandwidth = atomic_read(&bat_priv->gw_bandwidth);
+
+ batadv_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 batadv_store_gw_bwidth(struct kobject *kobj,
+ struct attribute *attr, char *buff,
+ size_t count)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+
+ if (buff[count - 1] == '\n')
+ buff[count - 1] = '\0';
+
+ return batadv_gw_bandwidth_set(net_dev, buff, count);
+}
+
+BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL);
+BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL);
+#ifdef CONFIG_BATMAN_ADV_BLA
+BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, S_IRUGO | S_IWUSR, NULL);
+#endif
+BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu);
+BATADV_ATTR_SIF_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
+static BATADV_ATTR(vis_mode, S_IRUGO | S_IWUSR, batadv_show_vis_mode,
+ batadv_store_vis_mode);
+static BATADV_ATTR(routing_algo, S_IRUGO, batadv_show_bat_algo, NULL);
+static BATADV_ATTR(gw_mode, S_IRUGO | S_IWUSR, batadv_show_gw_mode,
+ batadv_store_gw_mode);
+BATADV_ATTR_SIF_UINT(orig_interval, S_IRUGO | S_IWUSR, 2 * BATADV_JITTER,
+ INT_MAX, NULL);
+BATADV_ATTR_SIF_UINT(hop_penalty, S_IRUGO | S_IWUSR, 0, BATADV_TQ_MAX_VALUE,
+ NULL);
+BATADV_ATTR_SIF_UINT(gw_sel_class, S_IRUGO | S_IWUSR, 1, BATADV_TQ_MAX_VALUE,
+ batadv_post_gw_deselect);
+static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
+ batadv_store_gw_bwidth);
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
+#endif
+
+static struct batadv_attribute *batadv_mesh_attrs[] = {
+ &batadv_attr_aggregated_ogms,
+ &batadv_attr_bonding,
+#ifdef CONFIG_BATMAN_ADV_BLA
+ &batadv_attr_bridge_loop_avoidance,
+#endif
+ &batadv_attr_fragmentation,
+ &batadv_attr_ap_isolation,
+ &batadv_attr_vis_mode,
+ &batadv_attr_routing_algo,
+ &batadv_attr_gw_mode,
+ &batadv_attr_orig_interval,
+ &batadv_attr_hop_penalty,
+ &batadv_attr_gw_sel_class,
+ &batadv_attr_gw_bandwidth,
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+ &batadv_attr_log_level,
+#endif
+ NULL,
+};
+
+int batadv_sysfs_add_meshif(struct net_device *dev)
+{
+ struct kobject *batif_kobject = &dev->dev.kobj;
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+ struct batadv_attribute **bat_attr;
+ int err;
+
+ bat_priv->mesh_obj = kobject_create_and_add(BATADV_SYSFS_IF_MESH_SUBDIR,
+ batif_kobject);
+ if (!bat_priv->mesh_obj) {
+ batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
+ BATADV_SYSFS_IF_MESH_SUBDIR);
+ goto out;
+ }
+
+ for (bat_attr = batadv_mesh_attrs; *bat_attr; ++bat_attr) {
+ err = sysfs_create_file(bat_priv->mesh_obj,
+ &((*bat_attr)->attr));
+ if (err) {
+ batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
+ dev->name, BATADV_SYSFS_IF_MESH_SUBDIR,
+ ((*bat_attr)->attr).name);
+ goto rem_attr;
+ }
+ }
+
+ return 0;
+
+rem_attr:
+ for (bat_attr = batadv_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 batadv_sysfs_del_meshif(struct net_device *dev)
+{
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+ struct batadv_attribute **bat_attr;
+
+ for (bat_attr = batadv_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 batadv_show_mesh_iface(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+ struct batadv_hard_iface *hard_iface;
+ ssize_t length;
+ const char *ifname;
+
+ hard_iface = batadv_hardif_get_by_netdev(net_dev);
+ if (!hard_iface)
+ return 0;
+
+ if (hard_iface->if_status == BATADV_IF_NOT_IN_USE)
+ ifname = "none";
+ else
+ ifname = hard_iface->soft_iface->name;
+
+ length = sprintf(buff, "%s\n", ifname);
+
+ batadv_hardif_free_ref(hard_iface);
+
+ return length;
+}
+
+static ssize_t batadv_store_mesh_iface(struct kobject *kobj,
+ struct attribute *attr, char *buff,
+ size_t count)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+ struct batadv_hard_iface *hard_iface;
+ int status_tmp = -1;
+ int ret = count;
+
+ hard_iface = batadv_hardif_get_by_netdev(net_dev);
+ 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);
+ batadv_hardif_free_ref(hard_iface);
+ return -EINVAL;
+ }
+
+ if (strncmp(buff, "none", 4) == 0)
+ status_tmp = BATADV_IF_NOT_IN_USE;
+ else
+ status_tmp = BATADV_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 == BATADV_IF_NOT_IN_USE) {
+ batadv_hardif_disable_interface(hard_iface);
+ goto unlock;
+ }
+
+ /* if the interface already is in use */
+ if (hard_iface->if_status != BATADV_IF_NOT_IN_USE)
+ batadv_hardif_disable_interface(hard_iface);
+
+ ret = batadv_hardif_enable_interface(hard_iface, buff);
+
+unlock:
+ rtnl_unlock();
+out:
+ batadv_hardif_free_ref(hard_iface);
+ return ret;
+}
+
+static ssize_t batadv_show_iface_status(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct net_device *net_dev = batadv_kobj_to_netdev(kobj);
+ struct batadv_hard_iface *hard_iface;
+ ssize_t length;
+
+ hard_iface = batadv_hardif_get_by_netdev(net_dev);
+ if (!hard_iface)
+ return 0;
+
+ switch (hard_iface->if_status) {
+ case BATADV_IF_TO_BE_REMOVED:
+ length = sprintf(buff, "disabling\n");
+ break;
+ case BATADV_IF_INACTIVE:
+ length = sprintf(buff, "inactive\n");
+ break;
+ case BATADV_IF_ACTIVE:
+ length = sprintf(buff, "active\n");
+ break;
+ case BATADV_IF_TO_BE_ACTIVATED:
+ length = sprintf(buff, "enabling\n");
+ break;
+ case BATADV_IF_NOT_IN_USE:
+ default:
+ length = sprintf(buff, "not in use\n");
+ break;
+ }
+
+ batadv_hardif_free_ref(hard_iface);
+
+ return length;
+}
+
+static BATADV_ATTR(mesh_iface, S_IRUGO | S_IWUSR, batadv_show_mesh_iface,
+ batadv_store_mesh_iface);
+static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL);
+
+static struct batadv_attribute *batadv_batman_attrs[] = {
+ &batadv_attr_mesh_iface,
+ &batadv_attr_iface_status,
+ NULL,
+};
+
+int batadv_sysfs_add_hardif(struct kobject **hardif_obj, struct net_device *dev)
+{
+ struct kobject *hardif_kobject = &dev->dev.kobj;
+ struct batadv_attribute **bat_attr;
+ int err;
+
+ *hardif_obj = kobject_create_and_add(BATADV_SYSFS_IF_BAT_SUBDIR,
+ hardif_kobject);
+
+ if (!*hardif_obj) {
+ batadv_err(dev, "Can't add sysfs directory: %s/%s\n", dev->name,
+ BATADV_SYSFS_IF_BAT_SUBDIR);
+ goto out;
+ }
+
+ for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr) {
+ err = sysfs_create_file(*hardif_obj, &((*bat_attr)->attr));
+ if (err) {
+ batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
+ dev->name, BATADV_SYSFS_IF_BAT_SUBDIR,
+ ((*bat_attr)->attr).name);
+ goto rem_attr;
+ }
+ }
+
+ return 0;
+
+rem_attr:
+ for (bat_attr = batadv_batman_attrs; *bat_attr; ++bat_attr)
+ sysfs_remove_file(*hardif_obj, &((*bat_attr)->attr));
+out:
+ return -ENOMEM;
+}
+
+void batadv_sysfs_del_hardif(struct kobject **hardif_obj)
+{
+ kobject_put(*hardif_obj);
+ *hardif_obj = NULL;
+}
+
+int batadv_throw_uevent(struct batadv_priv *bat_priv, enum batadv_uev_type type,
+ enum batadv_uev_action action, const char *data)
+{
+ int ret = -ENOMEM;
+ struct batadv_hard_iface *primary_if = NULL;
+ struct kobject *bat_kobj;
+ char *uevent_env[4] = { NULL, NULL, NULL, NULL };
+
+ primary_if = batadv_primary_if_get_selected(bat_priv);
+ if (!primary_if)
+ goto out;
+
+ bat_kobj = &primary_if->soft_iface->dev.kobj;
+
+ uevent_env[0] = kmalloc(strlen(BATADV_UEV_TYPE_VAR) +
+ strlen(batadv_uev_type_str[type]) + 1,
+ GFP_ATOMIC);
+ if (!uevent_env[0])
+ goto out;
+
+ sprintf(uevent_env[0], "%s%s", BATADV_UEV_TYPE_VAR,
+ batadv_uev_type_str[type]);
+
+ uevent_env[1] = kmalloc(strlen(BATADV_UEV_ACTION_VAR) +
+ strlen(batadv_uev_action_str[action]) + 1,
+ GFP_ATOMIC);
+ if (!uevent_env[1])
+ goto out;
+
+ sprintf(uevent_env[1], "%s%s", BATADV_UEV_ACTION_VAR,
+ batadv_uev_action_str[action]);
+
+ /* If the event is DEL, ignore the data field */
+ if (action != BATADV_UEV_DEL) {
+ uevent_env[2] = kmalloc(strlen(BATADV_UEV_DATA_VAR) +
+ strlen(data) + 1, GFP_ATOMIC);
+ if (!uevent_env[2])
+ goto out;
+
+ sprintf(uevent_env[2], "%s%s", BATADV_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)
+ batadv_hardif_free_ref(primary_if);
+
+ if (ret)
+ batadv_dbg(BATADV_DBG_BATMAN, bat_priv,
+ "Impossible to send uevent for (%s,%s,%s) event (err: %d)\n",
+ batadv_uev_type_str[type],
+ batadv_uev_action_str[action],
+ (action == BATADV_UEV_DEL ? "NULL" : data), ret);
+ return ret;
+}