linux-kernel - [PATCH 4.9 22/90] ipvlan: egress mcast packets are not exceptional

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Date:   Thu, 19 Mar 2020 13:59:44 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Paolo Abeni <pabeni@...hat.com>,
        "David S. Miller" <davem@...emloft.net>
Subject: [PATCH 4.9 22/90] ipvlan: egress mcast packets are not exceptional

From: Paolo Abeni <pabeni@...hat.com>

commit cccc200fcaf04cff4342036a72e51d6adf6c98c1 upstream.

Currently, if IPv6 is enabled on top of an ipvlan device in l3
mode, the following warning message:

 Dropped {multi|broad}cast of type= [86dd]

is emitted every time that a RS is generated and dmseg is soon
filled with irrelevant messages. Replace pr_warn with pr_debug,
to preserve debuggability, without scaring the sysadmin.

Signed-off-by: Paolo Abeni <pabeni@...hat.com>
Signed-off-by: David S. Miller <davem@...emloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/net/ipvlan/ipvlan_core.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/drivers/net/ipvlan/ipvlan_core.c
+++ b/drivers/net/ipvlan/ipvlan_core.c
@@ -446,8 +446,8 @@ static int ipvlan_process_outbound(struc
 
 	/* In this mode we dont care about multicast and broadcast traffic */
 	if (is_multicast_ether_addr(ethh->h_dest)) {
-		pr_warn_ratelimited("Dropped {multi|broad}cast of type= [%x]\n",
-				    ntohs(skb->protocol));
+		pr_debug_ratelimited("Dropped {multi|broad}cast of type=[%x]\n",
+				     ntohs(skb->protocol));
 		kfree_skb(skb);
 		goto out;
 	}