diff options
Diffstat (limited to 'net/batman-adv/sysfs.c')
| -rw-r--r-- | net/batman-adv/sysfs.c | 162 |
1 files changed, 146 insertions, 16 deletions
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index fe87777fda8a..e7cf51333a36 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -1,4 +1,4 @@ -/* Copyright (C) 2010-2015 B.A.T.M.A.N. contributors: +/* Copyright (C) 2010-2016 B.A.T.M.A.N. contributors: * * Marek Lindner * @@ -25,6 +25,7 @@ #include <linux/fs.h> #include <linux/if.h> #include <linux/if_vlan.h> +#include <linux/kref.h> #include <linux/kernel.h> #include <linux/netdevice.h> #include <linux/printk.h> @@ -64,7 +65,7 @@ static struct batadv_priv *batadv_kobj_to_batpriv(struct kobject *obj) * batadv_vlan_kobj_to_batpriv - convert a vlan kobj in the associated batpriv * @obj: kobject to covert * - * Returns the associated batadv_priv struct. + * Return: the associated batadv_priv struct. */ static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) { @@ -82,9 +83,10 @@ static struct batadv_priv *batadv_vlan_kobj_to_batpriv(struct kobject *obj) /** * 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 * - * Returns the associated softif_vlan struct if found, NULL otherwise. + * 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) @@ -96,7 +98,7 @@ batadv_kobj_to_vlan(struct batadv_priv *bat_priv, struct kobject *obj) if (vlan_tmp->kobj != obj) continue; - if (!atomic_inc_not_zero(&vlan_tmp->refcount)) + if (!kref_get_unless_zero(&vlan_tmp->refcount)) continue; vlan = vlan_tmp; @@ -214,7 +216,7 @@ ssize_t batadv_store_vlan_##_name(struct kobject *kobj, \ attr, &vlan->_name, \ bat_priv->soft_iface); \ \ - batadv_softif_vlan_free_ref(vlan); \ + batadv_softif_vlan_put(vlan); \ return res; \ } @@ -229,7 +231,7 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ atomic_read(&vlan->_name) == 0 ? \ "disabled" : "enabled"); \ \ - batadv_softif_vlan_free_ref(vlan); \ + batadv_softif_vlan_put(vlan); \ return res; \ } @@ -240,6 +242,55 @@ ssize_t batadv_show_vlan_##_name(struct kobject *kobj, \ 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; \ + ssize_t length; \ + \ + hard_iface = batadv_hardif_get_by_netdev(net_dev); \ + if (!hard_iface) \ + return 0; \ + \ + length = __batadv_store_uint_attr(buff, count, _min, _max, \ + _post_func, attr, \ + &hard_iface->_var, net_dev); \ + \ + 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; \ + \ + 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, @@ -491,7 +542,7 @@ static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, * @attr: the batman-adv attribute the user is interacting with * @buff: the buffer that will contain the data to send back to the user * - * Returns the number of bytes written into 'buff' on success or a negative + * 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, @@ -511,7 +562,7 @@ static ssize_t batadv_show_isolation_mark(struct kobject *kobj, * @buff: the buffer containing the user data * @count: number of bytes in the buffer * - * Returns 'count' on success or a negative error code in case of failure + * 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, @@ -620,9 +671,7 @@ static struct batadv_attribute *batadv_mesh_attrs[] = { BATADV_ATTR_VLAN_BOOL(ap_isolation, S_IRUGO | S_IWUSR, NULL); -/** - * batadv_vlan_attrs - array of vlan specific sysfs attributes - */ +/* array of vlan specific sysfs attributes */ static struct batadv_attribute *batadv_vlan_attrs[] = { &batadv_attr_vlan_ap_isolation, NULL, @@ -683,7 +732,7 @@ void batadv_sysfs_del_meshif(struct net_device *dev) * @dev: netdev of the mesh interface * @vlan: private data of the newly added VLAN interface * - * Returns 0 on success and -ENOMEM if any of the structure allocations fails. + * 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) @@ -771,7 +820,7 @@ static ssize_t batadv_show_mesh_iface(struct kobject *kobj, length = sprintf(buff, "%s\n", ifname); - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return length; } @@ -795,7 +844,7 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj, if (strlen(buff) >= IFNAMSIZ) { pr_err("Invalid parameter for 'mesh_iface' setting received: interface name too long '%s'\n", buff); - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return -EINVAL; } @@ -829,7 +878,7 @@ static ssize_t batadv_store_mesh_iface(struct kobject *kobj, unlock: rtnl_unlock(); out: - batadv_hardif_free_ref(hard_iface); + batadv_hardif_put(hard_iface); return ret; } @@ -863,18 +912,99 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj, break; } - batadv_hardif_free_ref(hard_iface); + 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; + u32 tp_override; + u32 old_tp_override; + bool ret; + + 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(net_dev, "%s: Changing from: %u.%u MBit to: %u.%u MBit\n", + "throughput_override", + old_tp_override / 10, old_tp_override % 10, + tp_override / 10, tp_override % 10); + + atomic_set(&hard_iface->bat_v.throughput_override, tp_override); + +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; + + 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, S_IRUGO | S_IWUSR, batadv_show_mesh_iface, batadv_store_mesh_iface); static BATADV_ATTR(iface_status, S_IRUGO, batadv_show_iface_status, NULL); +#ifdef CONFIG_BATMAN_ADV_BATMAN_V +BATADV_ATTR_HIF_UINT(elp_interval, bat_v.elp_interval, S_IRUGO | S_IWUSR, + 2 * BATADV_JITTER, INT_MAX, NULL); +static BATADV_ATTR(throughput_override, S_IRUGO | S_IWUSR, + 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, }; |