--- /dev/null
+/* Copyright (C) 2010-2014 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "main.h"
+#include "sysfs.h"
+#include "translation-table.h"
+#include "distributed-arp-table.h"
+#include "network-coding.h"
+#include "originator.h"
+#include "hard-interface.h"
+#include "soft-interface.h"
+#include "gateway_common.h"
+#include "gateway_client.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);
+}
+
+/**
+ * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv
+ * @obj: kobject to covert
+ *
+ * Returns the associated batadv_priv struct.
+ */
+static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj)
+{
+ /* VLAN specific attributes are located in the root sysfs folder if they
+ * refer to the untagged VLAN..
+ */
+ if (!strcmp(BATADV_SYSFS_IF_MESH_SUBDIR, obj->name))
+ return batadv_kobj_to_batpriv(obj);
+
+ /* ..while the attributes for the tagged vlans are located in
+ * the in the corresponding "vlan%VID" subfolder
+ */
+ return batadv_kobj_to_batpriv(obj->parent);
+}
+
+/**
+ * batadv_kobj_to_vlan - convert a kobj in the associated softif_vlan struct
+ * @obj: kobject to covert
+ *
+ * Returns the associated softif_vlan struct if found, NULL otherwise.
+ */
+static struct batadv_softif_vlan *
+batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj)
+{
+ struct batadv_softif_vlan *vlan_tmp, *vlan = NULL;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(vlan_tmp, &bat_priv->softif_vlan_list, list) {
+ if (vlan_tmp->kobj != obj)
+ continue;
+
+ if (!atomic_inc_not_zero(&vlan_tmp->refcount))
+ continue;
+
+ vlan = vlan_tmp;
+ break;
+ }
+ rcu_read_unlock();
+
+ return vlan;
+}
+
+#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 for vlan attrs */
+#define BATADV_ATTR_VLAN(_name, _mode, _show, _store) \
+struct batadv_attribute batadv_attr_vlan_##_name = { \
+ .attr = {.name = __stringify(_name), \
+ .mode = _mode }, \
+ .show = _show, \
+ .store = _store, \
+}
+
+/* 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_VLAN_STORE_BOOL(_name, _post_func) \
+ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff, \
+ size_t count) \
+{ \
+ struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
+ struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
+ kobj); \
+ size_t res = __batadv_store_bool_attr(buff, count, _post_func, \
+ attr, &vlan->_name, \
+ bat_priv->soft_iface); \
+ \
+ batadv_softif_vlan_free_ref(vlan); \
+ return res; \
+}
+
+#define BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
+ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \
+ struct attribute *attr, char *buff) \
+{ \
+ struct batadv_priv *bat_priv = batadv_vlan_kobj_to_batpriv(kobj);\
+ struct batadv_softif_vlan *vlan = batadv_kobj_to_vlan(bat_priv, \
+ kobj); \
+ size_t res = sprintf(buff, "%s\n", \
+ atomic_read(&vlan->_name) == 0 ? \
+ "disabled" : "enabled"); \
+ \
+ batadv_softif_vlan_free_ref(vlan); \
+ return res; \
+}
+
+/* Use this, if you are going to turn a [name] in the vlan struct on or off */
+#define BATADV_ATTR_VLAN_BOOL(_name, _mode, _post_func) \
+ static BATADV_ATTR_VLAN_STORE_BOOL(_name, _post_func) \
+ static BATADV_ATTR_VLAN_SHOW_BOOL(_name) \
+ static BATADV_ATTR_VLAN(_name, _mode, batadv_show_vlan_##_name, \
+ batadv_store_vlan_##_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_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_reselect(struct net_device *net_dev)
+{
+ struct batadv_priv *bat_priv = netdev_priv(net_dev);
+
+ batadv_gw_reselect(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);
+
+ /* Invoking batadv_gw_reselect() is not enough to really de-select the
+ * current GW. It will only instruct the gateway client code to perform
+ * a re-election the next time that this is needed.
+ *
+ * When gw client mode is being switched off the current GW must be
+ * de-selected explicitly otherwise no GW_ADD uevent is thrown on
+ * client mode re-activation. This is operation is performed in
+ * batadv_gw_check_client_stop().
+ */
+ batadv_gw_reselect(bat_priv);
+ /* always call batadv_gw_check_client_stop() before changing the gateway
+ * state
+ */
+ batadv_gw_check_client_stop(bat_priv);
+ atomic_set(&bat_priv->gw_mode, (unsigned int)gw_mode_tmp);
+ batadv_gw_tvlv_container_update(bat_priv);
+ 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);
+ uint32_t down, up;
+
+ down = atomic_read(&bat_priv->gw.bandwidth_down);
+ up = atomic_read(&bat_priv->gw.bandwidth_up);
+
+ return sprintf(buff, "%u.%u/%u.%u MBit\n", down / 10,
+ down % 10, up / 10, up % 10);
+}
+
+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_show_isolation_mark - print the current isolation mark/mask
+ * @kobj: kobject representing the private mesh sysfs directory
+ * @attr: the batman-adv attribute the user is interacting with
+ * @buff: the buffer that will contain the data to send back to the user
+ *
+ * Returns the number of bytes written into 'buff' on success or a negative
+ * error code in case of failure
+ */
+static ssize_t batadv_show_isolation_mark(struct kobject *kobj,
+ struct attribute *attr, char *buff)
+{
+ struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj);
+
+ return sprintf(buff, "%#.8x/%#.8x\n", bat_priv->isolation_mark,
+ bat_priv->isolation_mark_mask);
+}
+
+/**
+ * batadv_store_isolation_mark - parse and store the isolation mark/mask entered
+ * by the user
+ * @kobj: kobject representing the private mesh sysfs directory
+ * @attr: the batman-adv attribute the user is interacting with
+ * @buff: the buffer containing the user data
+ * @count: number of bytes in the buffer
+ *
+ * Returns 'count' on success or a negative error code in case of failure
+ */
+static ssize_t batadv_store_isolation_mark(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);
+ uint32_t mark, mask;
+ char *mask_ptr;
+
+ /* parse the mask if it has been specified, otherwise assume the mask is
+ * the biggest possible
+ */
+ mask = 0xFFFFFFFF;
+ mask_ptr = strchr(buff, '/');
+ if (mask_ptr) {
+ *mask_ptr = '\0';
+ mask_ptr++;
+
+ /* the mask must be entered in hex base as it is going to be a
+ * bitmask and not a prefix length
+ */
+ if (kstrtou32(mask_ptr, 16, &mask) < 0)
+ return -EINVAL;
+ }
+
+ /* the mark can be entered in any base */
+ if (kstrtou32(buff, 0, &mark) < 0)
+ return -EINVAL;
+
+ bat_priv->isolation_mark_mask = mask;
+ /* erase bits not covered by the mask */
+ bat_priv->isolation_mark = mark & bat_priv->isolation_mark_mask;
+
+ batadv_info(net_dev,
+ "New skb mark for extended isolation: %#.8x/%#.8x\n",
+ bat_priv->isolation_mark, bat_priv->isolation_mark_mask);
+
+ return 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
+#ifdef CONFIG_BATMAN_ADV_DAT
+BATADV_ATTR_SIF_BOOL(distributed_arp_table, S_IRUGO | S_IWUSR,
+ batadv_dat_status_update);
+#endif
+BATADV_ATTR_SIF_BOOL(fragmentation, S_IRUGO | S_IWUSR, batadv_update_min_mtu);
+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_reselect);
+static BATADV_ATTR(gw_bandwidth, S_IRUGO | S_IWUSR, batadv_show_gw_bwidth,
+ batadv_store_gw_bwidth);
+#ifdef CONFIG_BATMAN_ADV_MCAST
+BATADV_ATTR_SIF_BOOL(multicast_mode, S_IRUGO | S_IWUSR, NULL);
+#endif
+#ifdef CONFIG_BATMAN_ADV_DEBUG
+BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL);
+#endif
+#ifdef CONFIG_BATMAN_ADV_NC
+BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR,
+ batadv_nc_status_update);
+#endif
+static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR,
+ batadv_show_isolation_mark, batadv_store_isolation_mark);
+
+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
+#ifdef CONFIG_BATMAN_ADV_DAT
+ &batadv_attr_distributed_arp_table,
+#endif
+#ifdef CONFIG_BATMAN_ADV_MCAST
+ &batadv_attr_multicast_mode,
+#endif
+ &batadv_attr_fragmentation,
+ &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
+#ifdef CONFIG_BATMAN_ADV_NC
+ &batadv_attr_network_coding,
+#endif
+ &batadv_attr_isolation_mark,
+ NULL,
+};
+
+BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL);
+
+/**
+ * batadv_vlan_attrs - array of vlan specific sysfs attributes
+ */
+static struct batadv_attribute *batadv_vlan_attrs[] = {
+ &batadv_attr_vlan_ap_isolation,
+ 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;
+}
+
+/**
+ * batadv_sysfs_add_vlan - add all the needed sysfs objects for the new vlan
+ * @dev: netdev of the mesh interface
+ * @vlan: private data of the newly added VLAN interface
+ *
+ * Returns 0 on success and -ENOMEM if any of the structure allocations fails.
+ */
+int batadv_sysfs_add_vlan(struct net_device *dev,
+ struct batadv_softif_vlan *vlan)
+{
+ char vlan_subdir[sizeof(BATADV_SYSFS_VLAN_SUBDIR_PREFIX) + 5];
+ struct batadv_priv *bat_priv = netdev_priv(dev);
+ struct batadv_attribute **bat_attr;
+ int err;
+
+ if (vlan->vid & BATADV_VLAN_HAS_TAG) {
+ sprintf(vlan_subdir, BATADV_SYSFS_VLAN_SUBDIR_PREFIX "%hu",
+ vlan->vid & VLAN_VID_MASK);
+
+ vlan->kobj = kobject_create_and_add(vlan_subdir,
+ bat_priv->mesh_obj);
+ if (!vlan->kobj) {
+ batadv_err(dev, "Can't add sysfs directory: %s/%s\n",
+ dev->name, vlan_subdir);
+ goto out;
+ }
+ } else {
+ /* the untagged LAN uses the root folder to store its "VLAN
+ * specific attributes"
+ */
+ vlan->kobj = bat_priv->mesh_obj;
+ kobject_get(bat_priv->mesh_obj);
+ }
+
+ for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr) {
+ err = sysfs_create_file(vlan->kobj,
+ &((*bat_attr)->attr));
+ if (err) {
+ batadv_err(dev, "Can't add sysfs file: %s/%s/%s\n",
+ dev->name, vlan_subdir,
+ ((*bat_attr)->attr).name);
+ goto rem_attr;
+ }
+ }
+
+ return 0;
+
+rem_attr:
+ for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
+ sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
+
+ kobject_put(vlan->kobj);
+ vlan->kobj = NULL;
+out:
+ return -ENOMEM;
+}
+
+/**
+ * batadv_sysfs_del_vlan - remove all the sysfs objects for a given VLAN
+ * @bat_priv: the bat priv with all the soft interface information
+ * @vlan: the private data of the VLAN to destroy
+ */
+void batadv_sysfs_del_vlan(struct batadv_priv *bat_priv,
+ struct batadv_softif_vlan *vlan)
+{
+ struct batadv_attribute **bat_attr;
+
+ for (bat_attr = batadv_vlan_attrs; *bat_attr; ++bat_attr)
+ sysfs_remove_file(vlan->kobj, &((*bat_attr)->attr));
+
+ kobject_put(vlan->kobj);
+ vlan->kobj = 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;
+
+ rtnl_lock();
+
+ if (status_tmp == BATADV_IF_NOT_IN_USE) {
+ batadv_hardif_disable_interface(hard_iface,
+ BATADV_IF_CLEANUP_AUTO);
+ 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,
+ BATADV_IF_CLEANUP_AUTO);
+
+ 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 kobject *bat_kobj;
+ char *uevent_env[4] = { NULL, NULL, NULL, NULL };
+
+ bat_kobj = &bat_priv->soft_iface->dev.kobj;
+
+ uevent_env[0] = kasprintf(GFP_ATOMIC,
+ "%s%s", BATADV_UEV_TYPE_VAR,
+ batadv_uev_type_str[type]);
+ if (!uevent_env[0])
+ goto out;
+
+ uevent_env[1] = kasprintf(GFP_ATOMIC,
+ "%s%s", BATADV_UEV_ACTION_VAR,
+ batadv_uev_action_str[action]);
+ if (!uevent_env[1])
+ goto out;
+
+ /* If the event is DEL, ignore the data field */
+ if (action != BATADV_UEV_DEL) {
+ uevent_env[2] = kasprintf(GFP_ATOMIC,
+ "%s%s", BATADV_UEV_DATA_VAR, data);
+ if (!uevent_env[2])
+ goto out;
+ }
+
+ ret = kobject_uevent_env(bat_kobj, KOBJ_CHANGE, uevent_env);
+out:
+ kfree(uevent_env[0]);
+ kfree(uevent_env[1]);
+ kfree(uevent_env[2]);
+
+ 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;
+}
Code Review / kvmfornfv.git / blobdiff