From 085e1a65f04fb05941de0a071c8d70246cd03178 Mon Sep 17 00:00:00 2001 From: David Ahern Date: Tue, 11 Apr 2017 17:02:40 -0700 Subject: [PATCH] rtnetlink: Do not generate notifications for MTU events Changing MTU on a link currently causes 3 messages to be sent to userspace: [LINK]11: dummy1: mtu 1490 qdisc noqueue state UNKNOWN group default link/ether f2:52:5c:6d:21:f3 brd ff:ff:ff:ff:ff:ff [LINK]11: dummy1: mtu 1500 qdisc noqueue state UNKNOWN group default link/ether f2:52:5c:6d:21:f3 brd ff:ff:ff:ff:ff:ff [LINK]11: dummy1: mtu 1500 qdisc noqueue state UNKNOWN group default link/ether f2:52:5c:6d:21:f3 brd ff:ff:ff:ff:ff:ff Remove the messages sent for PRE_CHANGE_MTU and CHANGE_MTU netdev events. Signed-off-by: David Ahern Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 58419da..79ab437 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -4117,7 +4117,6 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi switch (event) { case NETDEV_REBOOT: - case NETDEV_CHANGEMTU: case NETDEV_CHANGEADDR: case NETDEV_CHANGENAME: case NETDEV_FEAT_CHANGE: @@ -4126,7 +4125,6 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi case NETDEV_NOTIFY_PEERS: case NETDEV_CHANGEUPPER: case NETDEV_RESEND_IGMP: - case NETDEV_PRECHANGEMTU: case NETDEV_CHANGEINFODATA: case NETDEV_PRECHANGEUPPER: case NETDEV_CHANGELOWERSTATE: -- 2.7.4