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openvswitch: Warn over-mtu packets only if iface is UP.

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It is not unusual to have the bridge port down. Sometimes
it has the old MTU, which is fine since it's not being used.

However, the kernel spams the log with a warning message
when a packet is going to be sent over such port. Fix that
by warning only if the interface is UP.

Signed-off-by: Flavio Leitner <fbl@sysclose.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Flavio Leitner 2021-03-16 17:14:27 -03:00 committed by David S. Miller
parent 01035bcc0f
commit ebfbc46b35
1 changed files with 5 additions and 3 deletions
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8
net/openvswitch/vport.c
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@ -497,10 +497,12 @@ void ovs_vport_send(struct vport *vport, struct sk_buff *skb, u8 mac_proto)
if (unlikely(packet_length(skb, vport->dev) > mtu &&
!skb_is_gso(skb))) {
net_warn_ratelimited("%s: dropped over-mtu packet: %d > %d\n",
vport->dev->name,
packet_length(skb, vport->dev), mtu);
vport->dev->stats.tx_errors++;
if (vport->dev->flags & IFF_UP)
net_warn_ratelimited("%s: dropped over-mtu packet: "
"%d > %d\n", vport->dev->name,
packet_length(skb, vport->dev),
mtu);
goto drop;
}