openvswitch: Don't insert empty OVS_VPORT_ATTR_OPTIONS attribute
The port specific options are currently unused resulting in an
empty OVS_VPORT_ATTR_OPTIONS nested attribute being inserted
into every OVS_VPORT_CMD_GET message.
Don't insert OVS_VPORT_ATTR_OPTIONS if no options are present.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jesse Gross <jesse@nicira.com>
diff --git a/net/openvswitch/vport.c b/net/openvswitch/vport.c
index f6b8132..71a2de8 100644
--- a/net/openvswitch/vport.c
+++ b/net/openvswitch/vport.c
@@ -301,17 +301,19 @@
int ovs_vport_get_options(const struct vport *vport, struct sk_buff *skb)
{
struct nlattr *nla;
+ int err;
+
+ if (!vport->ops->get_options)
+ return 0;
nla = nla_nest_start(skb, OVS_VPORT_ATTR_OPTIONS);
if (!nla)
return -EMSGSIZE;
- if (vport->ops->get_options) {
- int err = vport->ops->get_options(vport, skb);
- if (err) {
- nla_nest_cancel(skb, nla);
- return err;
- }
+ err = vport->ops->get_options(vport, skb);
+ if (err) {
+ nla_nest_cancel(skb, nla);
+ return err;
}
nla_nest_end(skb, nla);