netdev - [PATCH net 2/2] vxlan: Add missing VNI filter counter update in arp

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Message-ID: <fdba6a77fb820c04c0a67f7c0c56c957ce9fa4e5.1714144439.git.gnault@redhat.com>
Date: Fri, 26 Apr 2024 17:27:19 +0200
From: Guillaume Nault <gnault@...hat.com>
To: David Miller <davem@...emloft.net>, Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>, Eric Dumazet <edumazet@...gle.com>
Cc: netdev@...r.kernel.org, Ido Schimmel <idosch@...dia.com>,
	Amit Cohen <amcohen@...dia.com>, Petr Machata <petrm@...dia.com>,
	Nikolay Aleksandrov <razor@...ckwall.org>,
	Jiri Benc <jbenc@...hat.com>, Breno Leitao <leitao@...ian.org>,
	Roopa Prabhu <roopa@...dia.com>,
	stephen hemminger <shemminger@...tta.com>
Subject: [PATCH net 2/2] vxlan: Add missing VNI filter counter update in
 arp_reduce().

VXLAN stores per-VNI statistics using vxlan_vnifilter_count().
These statistics were not updated when arp_reduce() failed its
pskb_may_pull() call.

Use vxlan_vnifilter_count() to update the VNI counter when that
happens.

Fixes: 4095e0e1328a ("drivers: vxlan: vnifilter: per vni stats")
Signed-off-by: Guillaume Nault <gnault@...hat.com>
---
 drivers/net/vxlan/vxlan_core.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/vxlan/vxlan_core.c b/drivers/net/vxlan/vxlan_core.c
index 0cd9e44c7be8..c9e4e03ad214 100644
--- a/drivers/net/vxlan/vxlan_core.c
+++ b/drivers/net/vxlan/vxlan_core.c
@@ -1838,6 +1838,8 @@ static int arp_reduce(struct net_device *dev, struct sk_buff *skb, __be32 vni)
 
 	if (!pskb_may_pull(skb, arp_hdr_len(dev))) {
 		dev_core_stats_tx_dropped_inc(dev);
+		vxlan_vnifilter_count(vxlan, vni, NULL,
+				      VXLAN_VNI_STATS_TX_DROPS, 0);
 		goto out;
 	}
 	parp = arp_hdr(skb);
-- 
2.39.2