linux-kernel - [PATCH net-next 2/2] openvswitch: Fix overreporting of drops in dropwatch

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Date:   Thu, 28 Jul 2022 12:12:59 -0400
From:   Mike Pattrick <mkp@...hat.com>
To:     netdev@...r.kernel.org
Cc:     pvalerio@...hat.com, Mike Pattrick <mkp@...hat.com>,
        Pravin B Shelar <pshelar@....org>,
        "David S. Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>, dev@...nvswitch.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH net-next 2/2] openvswitch: Fix overreporting of drops in dropwatch

Currently queue_userspace_packet will call kfree_skb for all frames,
whether or not an error occurred. This can result in a single dropped
frame being reported as multiple drops in dropwatch. This patch will
consume the skbs instead.

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2109957
Signed-off-by: Mike Pattrick <mkp@...hat.com>
---
 net/openvswitch/datapath.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/net/openvswitch/datapath.c b/net/openvswitch/datapath.c
index 029f9c3e1c28..3eee4b0a2005 100644
--- a/net/openvswitch/datapath.c
+++ b/net/openvswitch/datapath.c
@@ -561,8 +561,9 @@ static int queue_userspace_packet(struct datapath *dp, struct sk_buff *skb,
 out:
 	if (err)
 		skb_tx_error(skb);
-	kfree_skb(user_skb);
-	kfree_skb(nskb);
+	consume_skb(user_skb);
+	consume_skb(nskb);
+
 	return err;
 }
 
-- 
2.31.1