Changing MTU on a link currently causes 3 messages to be sent to userspace:
[LINK]11: dummy1: <BROADCAST,NOARP,UP,LOWER_UP> 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: <BROADCAST,NOARP,UP,LOWER_UP> 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: <BROADCAST,NOARP,UP,LOWER_UP> 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 <d...@cumulusnetworks.com>
---
net/core/rtnetlink.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 58419da7961b..79ab43796b08 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:
--
2.1.4
