| // SPDX-License-Identifier: GPL-2.0 |
| /* Copyright (C) 2010-2020 B.A.T.M.A.N. contributors: |
| * |
| * Marek Lindner |
| */ |
| |
| #include "sysfs.h" |
| #include "main.h" |
| |
| #include <asm/current.h> |
| #include <linux/atomic.h> |
| #include <linux/compiler.h> |
| #include <linux/device.h> |
| #include <linux/errno.h> |
| #include <linux/gfp.h> |
| #include <linux/if.h> |
| #include <linux/if_vlan.h> |
| #include <linux/kernel.h> |
| #include <linux/kobject.h> |
| #include <linux/kref.h> |
| #include <linux/limits.h> |
| #include <linux/netdevice.h> |
| #include <linux/printk.h> |
| #include <linux/rculist.h> |
| #include <linux/rcupdate.h> |
| #include <linux/rtnetlink.h> |
| #include <linux/sched.h> |
| #include <linux/slab.h> |
| #include <linux/stddef.h> |
| #include <linux/string.h> |
| #include <linux/stringify.h> |
| #include <linux/workqueue.h> |
| #include <uapi/linux/batadv_packet.h> |
| #include <uapi/linux/batman_adv.h> |
| |
| #include "bridge_loop_avoidance.h" |
| #include "distributed-arp-table.h" |
| #include "gateway_client.h" |
| #include "gateway_common.h" |
| #include "hard-interface.h" |
| #include "log.h" |
| #include "netlink.h" |
| #include "network-coding.h" |
| #include "soft-interface.h" |
| |
| /** |
| * batadv_sysfs_deprecated() - Log use of deprecated batadv sysfs access |
| * @attr: attribute which was accessed |
| */ |
| static void batadv_sysfs_deprecated(struct attribute *attr) |
| { |
| pr_warn_ratelimited(DEPRECATED "%s (pid %d) Use of sysfs file \"%s\".\nUse batadv genl family instead", |
| current->comm, task_pid_nr(current), attr->name); |
| } |
| |
| 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 |
| * |
| * Return: 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 |
| * @bat_priv: the bat priv with all the soft interface information |
| * @obj: kobject to covert |
| * |
| * Return: 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 (!kref_get_unless_zero(&vlan_tmp->refcount)) |
| continue; |
| |
| vlan = vlan_tmp; |
| break; |
| } |
| rcu_read_unlock(); |
| |
| return vlan; |
| } |
| |
| /* 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); \ |
| ssize_t length; \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| length = __batadv_store_bool_attr(buff, count, _post_func, attr,\ |
| &bat_priv->_name, net_dev); \ |
| \ |
| batadv_netlink_notify_mesh(bat_priv); \ |
| \ |
| return length; \ |
| } |
| |
| #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); \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| 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, _var, _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); \ |
| ssize_t length; \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| length = __batadv_store_uint_attr(buff, count, _min, _max, \ |
| _post_func, attr, \ |
| &bat_priv->_var, net_dev, \ |
| NULL); \ |
| \ |
| batadv_netlink_notify_mesh(bat_priv); \ |
| \ |
| return length; \ |
| } |
| |
| #define BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
| ssize_t batadv_show_##_name(struct kobject *kobj, \ |
| struct attribute *attr, char *buff) \ |
| { \ |
| struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| return sprintf(buff, "%i\n", atomic_read(&bat_priv->_var)); \ |
| } \ |
| |
| /* 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, _var, _mode, _min, _max, _post_func)\ |
| static BATADV_ATTR_SIF_STORE_UINT(_name, _var, _min, _max, _post_func)\ |
| static BATADV_ATTR_SIF_SHOW_UINT(_name, _var) \ |
| 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_sysfs_deprecated(attr); \ |
| if (vlan->vid) \ |
| batadv_netlink_notify_vlan(bat_priv, vlan); \ |
| else \ |
| batadv_netlink_notify_mesh(bat_priv); \ |
| \ |
| batadv_softif_vlan_put(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_sysfs_deprecated(attr); \ |
| batadv_softif_vlan_put(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) |
| |
| #define BATADV_ATTR_HIF_STORE_UINT(_name, _var, _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; \ |
| struct batadv_priv *bat_priv; \ |
| ssize_t length; \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| 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->_var, \ |
| hard_iface->soft_iface, \ |
| net_dev); \ |
| \ |
| if (hard_iface->soft_iface) { \ |
| bat_priv = netdev_priv(hard_iface->soft_iface); \ |
| batadv_netlink_notify_hardif(bat_priv, hard_iface); \ |
| } \ |
| \ |
| batadv_hardif_put(hard_iface); \ |
| return length; \ |
| } |
| |
| #define BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ |
| 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; \ |
| \ |
| batadv_sysfs_deprecated(attr); \ |
| hard_iface = batadv_hardif_get_by_netdev(net_dev); \ |
| if (!hard_iface) \ |
| return 0; \ |
| \ |
| length = sprintf(buff, "%i\n", atomic_read(&hard_iface->_var)); \ |
| \ |
| batadv_hardif_put(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, _var, _mode, _min, _max, _post_func)\ |
| static BATADV_ATTR_HIF_STORE_UINT(_name, _var, _min, \ |
| _max, _post_func) \ |
| static BATADV_ATTR_HIF_SHOW_UINT(_name, _var) \ |
| 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, |
| bool *changed) |
| { |
| int enabled = -1; |
| |
| *changed = false; |
| |
| 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"); |
| |
| *changed = true; |
| |
| 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) |
| { |
| bool changed; |
| int ret; |
| |
| ret = batadv_store_bool_attr(buff, count, net_dev, attr->name, |
| attr_store, &changed); |
| if (post_func && changed) |
| post_func(net_dev); |
| |
| return ret; |
| } |
| |
| static int batadv_store_uint_attr(const char *buff, size_t count, |
| struct net_device *net_dev, |
| struct net_device *slave_dev, |
| const char *attr_name, |
| unsigned int min, unsigned int max, |
| atomic_t *attr) |
| { |
| char ifname[IFNAMSIZ + 3] = ""; |
| 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; |
| |
| if (slave_dev) |
| snprintf(ifname, sizeof(ifname), "%s: ", slave_dev->name); |
| |
| batadv_info(net_dev, "%s: %sChanging from: %i to: %lu\n", |
| attr_name, ifname, atomic_read(attr), uint_val); |
| |
| atomic_set(attr, uint_val); |
| return count; |
| } |
| |
| static 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, |
| struct net_device *slave_dev) |
| { |
| int ret; |
| |
| ret = batadv_store_uint_attr(buff, count, net_dev, slave_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); |
| |
| batadv_sysfs_deprecated(attr); |
| return sprintf(buff, "%s\n", bat_priv->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; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| /* GW mode is not available if the routing algorithm in use does not |
| * implement the GW API |
| */ |
| if (!bat_priv->algo_ops->gw.get_best_gw_node || |
| !bat_priv->algo_ops->gw.is_eligible) |
| return -ENOENT; |
| |
| 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; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| /* toggling GW mode is allowed only if the routing algorithm in use |
| * provides the GW API |
| */ |
| if (!bat_priv->algo_ops->gw.get_best_gw_node || |
| !bat_priv->algo_ops->gw.is_eligible) |
| return -EINVAL; |
| |
| 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); |
| |
| batadv_netlink_notify_mesh(bat_priv); |
| |
| return count; |
| } |
| |
| static ssize_t batadv_show_gw_sel_class(struct kobject *kobj, |
| struct attribute *attr, char *buff) |
| { |
| struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
| |
| batadv_sysfs_deprecated(attr); |
| |
| /* GW selection class is not available if the routing algorithm in use |
| * does not implement the GW API |
| */ |
| if (!bat_priv->algo_ops->gw.get_best_gw_node || |
| !bat_priv->algo_ops->gw.is_eligible) |
| return -ENOENT; |
| |
| if (bat_priv->algo_ops->gw.show_sel_class) |
| return bat_priv->algo_ops->gw.show_sel_class(bat_priv, buff); |
| |
| return sprintf(buff, "%i\n", atomic_read(&bat_priv->gw.sel_class)); |
| } |
| |
| static ssize_t batadv_store_gw_sel_class(struct kobject *kobj, |
| struct attribute *attr, char *buff, |
| size_t count) |
| { |
| struct batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
| ssize_t length; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| /* setting the GW selection class is allowed only if the routing |
| * algorithm in use implements the GW API |
| */ |
| if (!bat_priv->algo_ops->gw.get_best_gw_node || |
| !bat_priv->algo_ops->gw.is_eligible) |
| return -EINVAL; |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| if (bat_priv->algo_ops->gw.store_sel_class) |
| return bat_priv->algo_ops->gw.store_sel_class(bat_priv, buff, |
| count); |
| |
| length = __batadv_store_uint_attr(buff, count, 1, BATADV_TQ_MAX_VALUE, |
| batadv_post_gw_reselect, attr, |
| &bat_priv->gw.sel_class, |
| bat_priv->soft_iface, NULL); |
| |
| batadv_netlink_notify_mesh(bat_priv); |
| |
| return length; |
| } |
| |
| 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); |
| u32 down, up; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| 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 batadv_priv *bat_priv = batadv_kobj_to_batpriv(kobj); |
| struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
| ssize_t length; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| length = batadv_gw_bandwidth_set(net_dev, buff, count); |
| |
| batadv_netlink_notify_mesh(bat_priv); |
| |
| return length; |
| } |
| |
| /** |
| * 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 |
| * |
| * Return: 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); |
| |
| batadv_sysfs_deprecated(attr); |
| 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 |
| * |
| * Return: '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); |
| u32 mark, mask; |
| char *mask_ptr; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| /* 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); |
| |
| batadv_netlink_notify_mesh(bat_priv); |
| |
| return count; |
| } |
| |
| BATADV_ATTR_SIF_BOOL(aggregated_ogms, 0644, NULL); |
| BATADV_ATTR_SIF_BOOL(bonding, 0644, NULL); |
| #ifdef CONFIG_BATMAN_ADV_BLA |
| BATADV_ATTR_SIF_BOOL(bridge_loop_avoidance, 0644, batadv_bla_status_update); |
| #endif |
| #ifdef CONFIG_BATMAN_ADV_DAT |
| BATADV_ATTR_SIF_BOOL(distributed_arp_table, 0644, batadv_dat_status_update); |
| #endif |
| BATADV_ATTR_SIF_BOOL(fragmentation, 0644, batadv_update_min_mtu); |
| static BATADV_ATTR(routing_algo, 0444, batadv_show_bat_algo, NULL); |
| static BATADV_ATTR(gw_mode, 0644, batadv_show_gw_mode, batadv_store_gw_mode); |
| BATADV_ATTR_SIF_UINT(orig_interval, orig_interval, 0644, 2 * BATADV_JITTER, |
| INT_MAX, NULL); |
| BATADV_ATTR_SIF_UINT(hop_penalty, hop_penalty, 0644, 0, BATADV_TQ_MAX_VALUE, |
| NULL); |
| static BATADV_ATTR(gw_sel_class, 0644, batadv_show_gw_sel_class, |
| batadv_store_gw_sel_class); |
| static BATADV_ATTR(gw_bandwidth, 0644, batadv_show_gw_bwidth, |
| batadv_store_gw_bwidth); |
| #ifdef CONFIG_BATMAN_ADV_MCAST |
| BATADV_ATTR_SIF_BOOL(multicast_mode, 0644, NULL); |
| #endif |
| #ifdef CONFIG_BATMAN_ADV_DEBUG |
| BATADV_ATTR_SIF_UINT(log_level, log_level, 0644, 0, BATADV_DBG_ALL, NULL); |
| #endif |
| #ifdef CONFIG_BATMAN_ADV_NC |
| BATADV_ATTR_SIF_BOOL(network_coding, 0644, batadv_nc_status_update); |
| #endif |
| static BATADV_ATTR(isolation_mark, 0644, 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, 0644, NULL); |
| |
| /* array of vlan specific sysfs attributes */ |
| static struct batadv_attribute *batadv_vlan_attrs[] = { |
| &batadv_attr_vlan_ap_isolation, |
| NULL, |
| }; |
| |
| /** |
| * batadv_sysfs_add_meshif() - Add soft interface specific sysfs entries |
| * @dev: netdev struct of the soft interface |
| * |
| * Return: 0 on success or negative error number in case of failure |
| */ |
| 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_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
| kobject_del(bat_priv->mesh_obj); |
| kobject_put(bat_priv->mesh_obj); |
| bat_priv->mesh_obj = NULL; |
| out: |
| return -ENOMEM; |
| } |
| |
| /** |
| * batadv_sysfs_del_meshif() - Remove soft interface specific sysfs entries |
| * @dev: netdev struct of the soft interface |
| */ |
| 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_uevent(bat_priv->mesh_obj, KOBJ_REMOVE); |
| kobject_del(bat_priv->mesh_obj); |
| 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 |
| * |
| * Return: 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)); |
| |
| if (vlan->kobj != bat_priv->mesh_obj) { |
| kobject_uevent(vlan->kobj, KOBJ_REMOVE); |
| kobject_del(vlan->kobj); |
| } |
| 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)); |
| |
| if (vlan->kobj != bat_priv->mesh_obj) { |
| kobject_uevent(vlan->kobj, KOBJ_REMOVE); |
| kobject_del(vlan->kobj); |
| } |
| 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; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| 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_put(hard_iface); |
| |
| return length; |
| } |
| |
| /** |
| * batadv_store_mesh_iface_finish() - store new hardif mesh_iface state |
| * @net_dev: netdevice to add/remove to/from batman-adv soft-interface |
| * @ifname: name of soft-interface to modify |
| * |
| * Changes the parts of the hard+soft interface which can not be modified under |
| * sysfs lock (to prevent deadlock situations). |
| * |
| * Return: 0 on success, 0 < on failure |
| */ |
| static int batadv_store_mesh_iface_finish(struct net_device *net_dev, |
| char ifname[IFNAMSIZ]) |
| { |
| struct net *net = dev_net(net_dev); |
| struct batadv_hard_iface *hard_iface; |
| int status_tmp; |
| int ret = 0; |
| |
| ASSERT_RTNL(); |
| |
| hard_iface = batadv_hardif_get_by_netdev(net_dev); |
| if (!hard_iface) |
| return 0; |
| |
| if (strncmp(ifname, "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, ifname, IFNAMSIZ) == 0) |
| goto out; |
| |
| if (status_tmp == BATADV_IF_NOT_IN_USE) { |
| batadv_hardif_disable_interface(hard_iface, |
| BATADV_IF_CLEANUP_AUTO); |
| goto out; |
| } |
| |
| /* 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, net, ifname); |
| out: |
| batadv_hardif_put(hard_iface); |
| return ret; |
| } |
| |
| /** |
| * batadv_store_mesh_iface_work() - store new hardif mesh_iface state |
| * @work: work queue item |
| * |
| * Changes the parts of the hard+soft interface which can not be modified under |
| * sysfs lock (to prevent deadlock situations). |
| */ |
| static void batadv_store_mesh_iface_work(struct work_struct *work) |
| { |
| struct batadv_store_mesh_work *store_work; |
| int ret; |
| |
| store_work = container_of(work, struct batadv_store_mesh_work, work); |
| |
| rtnl_lock(); |
| ret = batadv_store_mesh_iface_finish(store_work->net_dev, |
| store_work->soft_iface_name); |
| rtnl_unlock(); |
| |
| if (ret < 0) |
| pr_err("Failed to store new mesh_iface state %s for %s: %d\n", |
| store_work->soft_iface_name, store_work->net_dev->name, |
| ret); |
| |
| dev_put(store_work->net_dev); |
| kfree(store_work); |
| } |
| |
| 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_store_mesh_work *store_work; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| 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); |
| return -EINVAL; |
| } |
| |
| store_work = kmalloc(sizeof(*store_work), GFP_KERNEL); |
| if (!store_work) |
| return -ENOMEM; |
| |
| dev_hold(net_dev); |
| INIT_WORK(&store_work->work, batadv_store_mesh_iface_work); |
| store_work->net_dev = net_dev; |
| strscpy(store_work->soft_iface_name, buff, |
| sizeof(store_work->soft_iface_name)); |
| |
| queue_work(batadv_event_workqueue, &store_work->work); |
| |
| return count; |
| } |
| |
| 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; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| 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_put(hard_iface); |
| |
| return length; |
| } |
| |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| |
| /** |
| * batadv_store_throughput_override() - parse and store throughput override |
| * 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 |
| * |
| * Return: 'count' on success or a negative error code in case of failure |
| */ |
| static ssize_t batadv_store_throughput_override(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; |
| struct batadv_priv *bat_priv; |
| u32 tp_override; |
| u32 old_tp_override; |
| bool ret; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| hard_iface = batadv_hardif_get_by_netdev(net_dev); |
| if (!hard_iface) |
| return -EINVAL; |
| |
| if (buff[count - 1] == '\n') |
| buff[count - 1] = '\0'; |
| |
| ret = batadv_parse_throughput(net_dev, buff, "throughput_override", |
| &tp_override); |
| if (!ret) |
| return count; |
| |
| old_tp_override = atomic_read(&hard_iface->bat_v.throughput_override); |
| if (old_tp_override == tp_override) |
| goto out; |
| |
| batadv_info(hard_iface->soft_iface, |
| "%s: %s: Changing from: %u.%u MBit to: %u.%u MBit\n", |
| "throughput_override", net_dev->name, |
| old_tp_override / 10, old_tp_override % 10, |
| tp_override / 10, tp_override % 10); |
| |
| atomic_set(&hard_iface->bat_v.throughput_override, tp_override); |
| |
| if (hard_iface->soft_iface) { |
| bat_priv = netdev_priv(hard_iface->soft_iface); |
| batadv_netlink_notify_hardif(bat_priv, hard_iface); |
| } |
| |
| out: |
| batadv_hardif_put(hard_iface); |
| return count; |
| } |
| |
| static ssize_t batadv_show_throughput_override(struct kobject *kobj, |
| struct attribute *attr, |
| char *buff) |
| { |
| struct net_device *net_dev = batadv_kobj_to_netdev(kobj); |
| struct batadv_hard_iface *hard_iface; |
| u32 tp_override; |
| |
| batadv_sysfs_deprecated(attr); |
| |
| hard_iface = batadv_hardif_get_by_netdev(net_dev); |
| if (!hard_iface) |
| return -EINVAL; |
| |
| tp_override = atomic_read(&hard_iface->bat_v.throughput_override); |
| |
| return sprintf(buff, "%u.%u MBit\n", tp_override / 10, |
| tp_override % 10); |
| } |
| |
| #endif |
| |
| static BATADV_ATTR(mesh_iface, 0644, batadv_show_mesh_iface, |
| batadv_store_mesh_iface); |
| static BATADV_ATTR(iface_status, 0444, batadv_show_iface_status, NULL); |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, 0644, |
| 2 * BATADV_JITTER, INT_MAX, NULL); |
| static BATADV_ATTR(throughput_override, 0644, batadv_show_throughput_override, |
| batadv_store_throughput_override); |
| #endif |
| |
| static struct batadv_attribute *batadv_batman_attrs[] = { |
| &batadv_attr_mesh_iface, |
| &batadv_attr_iface_status, |
| #ifdef CONFIG_BATMAN_ADV_BATMAN_V |
| &batadv_attr_elp_interval, |
| &batadv_attr_throughput_override, |
| #endif |
| NULL, |
| }; |
| |
| /** |
| * batadv_sysfs_add_hardif() - Add hard interface specific sysfs entries |
| * @hardif_obj: address where to store the pointer to new sysfs folder |
| * @dev: netdev struct of the hard interface |
| * |
| * Return: 0 on success or negative error number in case of failure |
| */ |
| 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; |
| } |
| |
| /** |
| * batadv_sysfs_del_hardif() - Remove hard interface specific sysfs entries |
| * @hardif_obj: address to the pointer to which stores batman-adv sysfs folder |
| * of the hard interface |
| */ |
| void batadv_sysfs_del_hardif(struct kobject **hardif_obj) |
| { |
| kobject_uevent(*hardif_obj, KOBJ_REMOVE); |
| kobject_del(*hardif_obj); |
| kobject_put(*hardif_obj); |
| *hardif_obj = NULL; |
| } |