Commit 6f56f618 authored by Yi-Hung Wei's avatar Yi-Hung Wei Committed by David S. Miller

openvswitch: Fix ovs_flow_key_update()

ovs_flow_key_update() is called when the flow key is invalid, and it is
used to update and revalidate the flow key. Commit 329f45bc
("openvswitch: add mac_proto field to the flow key") introduces mac_proto
field to flow key and use it to determine whether the flow key is valid.
However, the commit does not update the code path in ovs_flow_key_update()
to revalidate the flow key which may cause BUG_ON() on execute_recirc().
This patch addresses the aforementioned issue.

Fixes: 329f45bc ("openvswitch: add mac_proto field to the flow key")
Signed-off-by: default avatarYi-Hung Wei <yihung.wei@gmail.com>
Acked-by: default avatarJiri Benc <jbenc@redhat.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 3af887c3
......@@ -527,7 +527,7 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
/* Link layer. */
clear_vlan(key);
if (key->mac_proto == MAC_PROTO_NONE) {
if (ovs_key_mac_proto(key) == MAC_PROTO_NONE) {
if (unlikely(eth_type_vlan(skb->protocol)))
return -EINVAL;
......@@ -745,7 +745,13 @@ static int key_extract(struct sk_buff *skb, struct sw_flow_key *key)
int ovs_flow_key_update(struct sk_buff *skb, struct sw_flow_key *key)
{
return key_extract(skb, key);
int res;
res = key_extract(skb, key);
if (!res)
key->mac_proto &= ~SW_FLOW_KEY_INVALID;
return res;
}
static int key_extract_mac_proto(struct sk_buff *skb)
......
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