+++ /dev/null
-// 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)
- goto out;
-
- 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);
-
- batadv_hardif_put(hard_iface);
- 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;
-}
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