linux-kernel - [PATCH] net: openvswitch: Remove unnecessary skb

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Date:   Sat,  8 May 2021 10:27:07 +0800
From:   Yejune Deng <yejune.deng@...il.com>
To:     pshelar@....org, davem@...emloft.net
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        Yejune Deng <yejunedeng@...il.com>
Subject: [PATCH] net: openvswitch: Remove unnecessary skb_nfct()

There is no need add 'if (skb_nfct(skb))' assignment, the
nf_conntrack_put() would check it.

Signed-off-by: Yejune Deng <yejunedeng@...il.com>
---
 net/openvswitch/conntrack.c | 11 ++++-------
 1 file changed, 4 insertions(+), 7 deletions(-)

diff --git a/net/openvswitch/conntrack.c b/net/openvswitch/conntrack.c
index cadb6a2..1b5eae5 100644
--- a/net/openvswitch/conntrack.c
+++ b/net/openvswitch/conntrack.c
@@ -967,8 +967,7 @@ static int __ovs_ct_lookup(struct net *net, struct sw_flow_key *key,
 
 		/* Associate skb with specified zone. */
 		if (tmpl) {
-			if (skb_nfct(skb))
-				nf_conntrack_put(skb_nfct(skb));
+			nf_conntrack_put(skb_nfct(skb));
 			nf_conntrack_get(&tmpl->ct_general);
 			nf_ct_set(skb, tmpl, IP_CT_NEW);
 		}
@@ -1329,11 +1328,9 @@ int ovs_ct_execute(struct net *net, struct sk_buff *skb,
 
 int ovs_ct_clear(struct sk_buff *skb, struct sw_flow_key *key)
 {
-	if (skb_nfct(skb)) {
-		nf_conntrack_put(skb_nfct(skb));
-		nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
-		ovs_ct_fill_key(skb, key, false);
-	}
+	nf_conntrack_put(skb_nfct(skb));
+	nf_ct_set(skb, NULL, IP_CT_UNTRACKED);
+	ovs_ct_fill_key(skb, key, false);
 
 	return 0;
 }
-- 
2.7.4