[PATCH net 2/6] net: openvswitch: conntrack: remove 'add_helper' dead code

[Ilya Maximets <i.maximets@ovn.org>]

This variable can only become 'true' when the connection is not
confirmed, but it is only checked when it is confirmed.  So, it can be
treated as being always false and just removed.

Fixes: 3c1860543fcc ("openvswitch: add nf_ct_is_confirmed check before assigning the helper")
Cc: stable@vger.kernel.org
Signed-off-by: Ilya Maximets <i.maximets@ovn.org>
---
 net/openvswitch/conntrack.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index a733029c28dd0..c20f096eef40e 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -778,8 +778,6 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
 
 	ct = nf_ct_get(skb, &ctinfo);
 	if (ct) {
-		bool add_helper = false;
-
 		/* Packets starting a new connection must be NATted before the
 		 * helper, so that the helper knows about the NAT.  We enforce
 		 * this by delaying both NAT and helper calls for unconfirmed
@@ -811,7 +809,6 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
 							    GFP_ATOMIC);
 			if (err)
 				return err;
-			add_helper = true;
 
 			/* helper installed, add seqadj if NAT is required */
 			if (info->nat && !nfct_seqadj(ct)) {
@@ -821,13 +818,10 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
 		}
 
 		/* Call the helper only if:
-		 * - nf_conntrack_in() was executed above ("!cached") or a
-		 *   helper was just attached ("add_helper") for a confirmed
-		 *   connection, or
+		 * - nf_conntrack_in() was executed above ("!cached"), or
 		 * - When committing an unconfirmed connection.
 		 */
-		if ((nf_ct_is_confirmed(ct) ? !cached || add_helper :
-					      info->commit)) {
+		if ((nf_ct_is_confirmed(ct) ? !cached : info->commit)) {
 			int err = nf_ct_helper(skb, ct, ctinfo, info->family);
 
 			err = verdict_to_errno(err);
-- 
2.55.0