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path: root/drivers/infiniband/ulp/ipoib/ipoib_main.c
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Diffstat (limited to 'drivers/infiniband/ulp/ipoib/ipoib_main.c')
-rw-r--r--drivers/infiniband/ulp/ipoib/ipoib_main.c33
1 files changed, 33 insertions, 0 deletions
diff --git a/drivers/infiniband/ulp/ipoib/ipoib_main.c b/drivers/infiniband/ulp/ipoib/ipoib_main.c
index 900335a..ff17fe3 100644
--- a/drivers/infiniband/ulp/ipoib/ipoib_main.c
+++ b/drivers/infiniband/ulp/ipoib/ipoib_main.c
@@ -1019,6 +1019,37 @@ static ssize_t show_pkey(struct device *dev,
}
static DEVICE_ATTR(pkey, S_IRUGO, show_pkey, NULL);
+static ssize_t show_umcast(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
+
+ return sprintf(buf, "%d\n", test_bit(IPOIB_FLAG_UMCAST, &priv->flags));
+}
+
+static ssize_t set_umcast(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t count)
+{
+ struct ipoib_dev_priv *priv = netdev_priv(to_net_dev(dev));
+ unsigned long umcast_val = simple_strtoul(buf, NULL, 0);
+
+ if (umcast_val > 0) {
+ set_bit(IPOIB_FLAG_UMCAST, &priv->flags);
+ ipoib_warn(priv, "ignoring multicast groups joined directly "
+ "by userspace\n");
+ } else
+ clear_bit(IPOIB_FLAG_UMCAST, &priv->flags);
+
+ return count;
+}
+static DEVICE_ATTR(umcast, S_IWUSR | S_IRUGO, show_umcast, set_umcast);
+
+int ipoib_add_umcast_attr(struct net_device *dev)
+{
+ return device_create_file(&dev->dev, &dev_attr_umcast);
+}
+
static ssize_t create_child(struct device *dev,
struct device_attribute *attr,
const char *buf, size_t count)
@@ -1136,6 +1167,8 @@ static struct net_device *ipoib_add_port(const char *format,
goto sysfs_failed;
if (ipoib_add_pkey_attr(priv->dev))
goto sysfs_failed;
+ if (ipoib_add_umcast_attr(priv->dev))
+ goto sysfs_failed;
if (device_create_file(&priv->dev->dev, &dev_attr_create_child))
goto sysfs_failed;
if (device_create_file(&priv->dev->dev, &dev_attr_delete_child))
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