diff options
Diffstat (limited to 'net/batman-adv/sysfs.c')
| -rw-r--r-- | net/batman-adv/sysfs.c | 74 |
1 files changed, 74 insertions, 0 deletions
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index e86014332e1c..e7cf51333a36 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -917,12 +917,85 @@ static ssize_t batadv_show_iface_status(struct kobject *kobj, 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[] = { @@ -930,6 +1003,7 @@ static struct batadv_attribute *batadv_batman_attrs[] = { &batadv_attr_iface_status, #ifdef CONFIG_BATMAN_ADV_BATMAN_V &batadv_attr_elp_interval, + &batadv_attr_throughput_override, #endif NULL, }; |