static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
char *buff, size_t count)
{
struct net_device *net_dev = kobj_to_netdev(kobj);
struct hard_iface *hard_iface = hardif_get_by_netdev(net_dev);
int status_tmp = -1;
int ret = count;
if (!hard_iface)
return count;
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);
hardif_free_ref(hard_iface);
return -EINVAL;
}
if (strncmp(buff, "none", 4) == 0)
status_tmp = IF_NOT_IN_USE;
else
status_tmp = IF_I_WANT_YOU;
if (hard_iface->if_status == status_tmp)
goto out;
if ((hard_iface->soft_iface) &&
(strncmp(hard_iface->soft_iface->name, buff, IFNAMSIZ) == 0))
goto out;
if (!rtnl_trylock()) {
ret = -ERESTARTSYS;
goto out;
}
if (status_tmp == IF_NOT_IN_USE) {
hardif_disable_interface(hard_iface);
goto unlock;
}
/* if the interface already is in use */
if (hard_iface->if_status != IF_NOT_IN_USE)
hardif_disable_interface(hard_iface);
ret = hardif_enable_interface(hard_iface, buff);
unlock:
rtnl_unlock();
out:
hardif_free_ref(hard_iface);
return ret;
}
static ssize_t store_mesh_iface(struct kobject *kobj, struct attribute *attr,
char *buff, size_t count)
{
struct device *dev = to_dev(kobj->parent);
struct net_device *net_dev = to_net_dev(dev);
struct batman_if *batman_if = get_batman_if_by_netdev(net_dev);
int status_tmp = -1;
if (!batman_if)
return count;
if (strncmp(buff, "none", 4) == 0)
status_tmp = IF_NOT_IN_USE;
if (strncmp(buff, "bat0", 4) == 0)
status_tmp = IF_I_WANT_YOU;
if (status_tmp < 0) {
if (buff[count - 1] == '\n')
buff[count - 1] = '\0';
pr_err("Invalid parameter for 'mesh_iface' setting received: "
"%s\n", buff);
return -EINVAL;
}
if ((batman_if->if_status == status_tmp) ||
((status_tmp == IF_I_WANT_YOU) &&
(batman_if->if_status != IF_NOT_IN_USE)))
return count;
if (status_tmp == IF_I_WANT_YOU)
status_tmp = hardif_enable_interface(batman_if);
else
hardif_disable_interface(batman_if);
return (status_tmp < 0 ? status_tmp : count);
}
