switchdev: add new switchdev_port_bridge_getlink
Like bridge_setlink, add switchdev wrapper to handle bridge_getlink and
call into port driver to get port attrs. For now, only BR_LEARNING and
BR_LEARNING_SYNC are returned. To add more, we'll probably want to break
away from ndo_dflt_bridge_getlink() and build the netlink skb directly in
the switchdev code.
Signed-off-by: Scott Feldman <sfeldma@gmail.com>
Acked-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 0e15b6f..9210355 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -358,6 +358,34 @@
}
EXPORT_SYMBOL_GPL(call_switchdev_notifiers);
+/**
+ * switchdev_port_bridge_getlink - Get bridge port attributes
+ *
+ * @dev: port device
+ *
+ * Called for SELF on rtnl_bridge_getlink to get bridge port
+ * attributes.
+ */
+int switchdev_port_bridge_getlink(struct sk_buff *skb, u32 pid, u32 seq,
+ struct net_device *dev, u32 filter_mask,
+ int nlflags)
+{
+ struct switchdev_attr attr = {
+ .id = SWITCHDEV_ATTR_PORT_BRIDGE_FLAGS,
+ };
+ u16 mode = BRIDGE_MODE_UNDEF;
+ u32 mask = BR_LEARNING | BR_LEARNING_SYNC;
+ int err;
+
+ err = switchdev_port_attr_get(dev, &attr);
+ if (err)
+ return err;
+
+ return ndo_dflt_bridge_getlink(skb, pid, seq, dev, mode,
+ attr.brport_flags, mask, nlflags);
+}
+EXPORT_SYMBOL_GPL(switchdev_port_bridge_getlink);
+
static int switchdev_port_br_setflag(struct net_device *dev,
struct nlattr *nlattr,
unsigned long brport_flag)