netdev - [PATCHv3 net-next 1/4] bridge: remove rtmsg_ifinfo called in add_del

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Date:   Tue, 24 Oct 2017 13:54:17 +0800
From:   Xin Long <lucien.xin@...il.com>
To:     network dev <netdev@...r.kernel.org>
Cc:     davem@...emloft.net, David Ahern <dsahern@...il.com>,
        Jiri Pirko <jiri@...nulli.us>
Subject: [PATCHv3 net-next 1/4] bridge: remove rtmsg_ifinfo called in add_del_if

Since commit dc709f375743 ("rtnetlink: bring NETDEV_CHANGEUPPER event
process back in rtnetlink_event"), rtnetlink_event would process the
NETDEV_CHANGEUPPER event and send a notification to userspace.

In add_del_if, it would generate NETDEV_CHANGEUPPER event by whether
netdev_master_upper_dev_link or netdev_upper_dev_unlink. There's
no need to call rtmsg_ifinfo to send the notification any more.

So this patch is to remove it from add_del_if also to avoid redundant
notifications.

Signed-off-by: Xin Long <lucien.xin@...il.com>
---
 net/bridge/br_ioctl.c | 3 ---
 1 file changed, 3 deletions(-)

diff --git a/net/bridge/br_ioctl.c b/net/bridge/br_ioctl.c
index 8f29103..16d01a3 100644
--- a/net/bridge/br_ioctl.c
+++ b/net/bridge/br_ioctl.c
@@ -102,9 +102,6 @@ static int add_del_if(struct net_bridge *br, int ifindex, int isadd)
 	else
 		ret = br_del_if(br, dev);

-	if (!ret)
-		rtmsg_ifinfo(RTM_NEWLINK, dev, IFF_MASTER, GFP_KERNEL);
-
 	return ret;
 }

-- 
2.1.0