diff options
Diffstat (limited to 'net/batman-adv/sysfs.c')
| -rw-r--r-- | net/batman-adv/sysfs.c | 1272 |
1 files changed, 0 insertions, 1272 deletions
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c deleted file mode 100644 index 0f962dcd239e..000000000000 --- a/net/batman-adv/sysfs.c +++ /dev/null @@ -1,1272 +0,0 @@ -// 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; -} |