diff options
Diffstat (limited to 'net/batman-adv/sysfs.c')
| -rw-r--r-- | net/batman-adv/sysfs.c | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/net/batman-adv/sysfs.c b/net/batman-adv/sysfs.c index 511e01175654..b6a4403b7007 100644 --- a/net/batman-adv/sysfs.c +++ b/net/batman-adv/sysfs.c @@ -450,6 +450,74 @@ static ssize_t batadv_store_gw_bwidth(struct kobject *kobj, return batadv_gw_bandwidth_set(net_dev, buff, count); } +/** + * 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 + * + * Returns 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); + + 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 + * + * Returns '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); + uint32_t mark, mask; + char *mask_ptr; + + /* 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); + + return count; +} + BATADV_ATTR_SIF_BOOL(aggregated_ogms, S_IRUGO | S_IWUSR, NULL); BATADV_ATTR_SIF_BOOL(bonding, S_IRUGO | S_IWUSR, NULL); #ifdef CONFIG_BATMAN_ADV_BLA @@ -478,6 +546,8 @@ BATADV_ATTR_SIF_UINT(log_level, S_IRUGO | S_IWUSR, 0, BATADV_DBG_ALL, NULL); BATADV_ATTR_SIF_BOOL(network_coding, S_IRUGO | S_IWUSR, batadv_nc_status_update); #endif +static BATADV_ATTR(isolation_mark, S_IRUGO | S_IWUSR, + batadv_show_isolation_mark, batadv_store_isolation_mark); static struct batadv_attribute *batadv_mesh_attrs[] = { &batadv_attr_aggregated_ogms, @@ -501,6 +571,7 @@ static struct batadv_attribute *batadv_mesh_attrs[] = { #ifdef CONFIG_BATMAN_ADV_NC &batadv_attr_network_coding, #endif + &batadv_attr_isolation_mark, NULL, }; |