vxlan: support for ndo_fdb_get
This patch implements ndo_fdb_get for a vxlan device.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Reviewed-by: David Ahern <dsa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index 49d4b58..71c3b7b 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1152,6 +1152,39 @@ static int vxlan_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
return err;
}
+static int vxlan_fdb_get(struct sk_buff *skb,
+ struct nlattr *tb[],
+ struct net_device *dev,
+ const unsigned char *addr,
+ u16 vid, u32 portid, u32 seq,
+ struct netlink_ext_ack *extack)
+{
+ struct vxlan_dev *vxlan = netdev_priv(dev);
+ struct vxlan_fdb *f;
+ __be32 vni;
+ int err;
+
+ if (tb[NDA_VNI])
+ vni = cpu_to_be32(nla_get_u32(tb[NDA_VNI]));
+ else
+ vni = vxlan->default_dst.remote_vni;
+
+ rcu_read_lock();
+
+ f = __vxlan_find_mac(vxlan, addr, vni);
+ if (!f) {
+ NL_SET_ERR_MSG(extack, "Fdb entry not found");
+ err = -ENOENT;
+ goto errout;
+ }
+
+ err = vxlan_fdb_info(skb, vxlan, f, portid, seq,
+ RTM_NEWNEIGH, 0, first_remote_rcu(f));
+errout:
+ rcu_read_unlock();
+ return err;
+}
+
/* Watch incoming packets to learn mapping between Ethernet address
* and Tunnel endpoint.
* Return true if packet is bogus and should be dropped.
@@ -2805,6 +2838,7 @@ static const struct net_device_ops vxlan_netdev_ether_ops = {
.ndo_fdb_add = vxlan_fdb_add,
.ndo_fdb_del = vxlan_fdb_delete,
.ndo_fdb_dump = vxlan_fdb_dump,
+ .ndo_fdb_get = vxlan_fdb_get,
.ndo_fill_metadata_dst = vxlan_fill_metadata_dst,
};