static ssize_t store_rate_ctrl_alg(struct class_device *dev,
const char *buf, size_t len)
{
struct ieee80211_local *local = to_ieee80211_local(dev);
int res;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
res = rtnl_lock_local(local);
if (res)
return res;
res = ieee80211_init_rate_ctrl_alg(local, buf);
rtnl_unlock();
return res < 0 ? res : len;
}
static ssize_t store_remove_iface(struct class_device *dev,
const char *buf, size_t len)
{
struct ieee80211_local *local = to_ieee80211_local(dev);
int res;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (len > IFNAMSIZ)
return -EINVAL;
res = rtnl_lock_local(local);
if (res)
return res;
res = ieee80211_if_remove(local->mdev, buf, -1);
rtnl_unlock();
return res < 0 ? res : len;
}
static ssize_t ieee80211_stats_show(struct class_device *dev, char *buf,
ssize_t (*format)(struct ieee80211_low_level_stats *, char *))
{
struct ieee80211_local *local = to_ieee80211_local(dev);
struct ieee80211_low_level_stats stats;
ssize_t ret = -EINVAL;
if (!local->ops->get_stats)
return -EOPNOTSUPP;
ret = rtnl_lock_local(local);
if (ret)
return ret;
ret = local->ops->get_stats(local_to_hw(local), &stats);
rtnl_unlock();
if (!ret)
ret = (*format)(&stats, buf);
return ret;
}
static ssize_t store_add_iface(struct class_device *dev,
const char *buf, size_t len)
{
struct ieee80211_local *local = to_ieee80211_local(dev);
struct net_device *new_dev;
int res;
if (!capable(CAP_NET_ADMIN))
return -EPERM;
if (len > IFNAMSIZ)
return -EINVAL;
res = rtnl_lock_local(local);
if (res)
return res;
res = ieee80211_if_add(local->mdev, buf, 0, &new_dev);
if (res == 0)
ieee80211_if_set_type(new_dev, IEEE80211_IF_TYPE_STA);
rtnl_unlock();
return res < 0 ? res : len;
}
static ssize_t format_devstat_counter(struct ieee80211_local *local,
char __user *userbuf,
size_t count, loff_t *ppos,
int (*printvalue)(struct ieee80211_low_level_stats *stats, char *buf,
int buflen))
{
struct ieee80211_low_level_stats stats;
char buf[20];
int res;
if (!local->ops->get_stats)
return -EOPNOTSUPP;
res = rtnl_lock_local(local);
if (res)
return res;
res = local->ops->get_stats(local_to_hw(local), &stats);
rtnl_unlock();
if (!res)
res = printvalue(&stats, buf, sizeof(buf));
return simple_read_from_buffer(userbuf, count, ppos, buf, res);
}
