From bdaf0d5d98e1c42d3a48c5ce6db9d013cb882781 Mon Sep 17 00:00:00 2001 From: Xin Long Date: Sat, 9 Apr 2016 00:03:32 +0800 Subject: [PATCH] bridge: a netlink notification should be sent when those attributes are changed by br_sysfs_if Now when we change the attributes of bridge or br_port by netlink, a relevant netlink notification will be sent, but if we change them by ioctl or sysfs, no notification will be sent. We should ensure that whenever those attributes change internally or from sysfs/ioctl, that a netlink notification is sent out to listeners. Also, NetworkManager will use this in the future to listen for out-of-band bridge master attribute updates and incorporate them into the runtime configuration. This patch is used for br_sysfs_if, and we also move br_ifinfo_notify out of store_flag. Signed-off-by: Xin Long Reviewed-by: Nikolay Aleksandrov Signed-off-by: David S. Miller --- net/bridge/br_sysfs_if.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/bridge/br_sysfs_if.c b/net/bridge/br_sysfs_if.c index efe415ad842a..1e04d4d44273 100644 --- a/net/bridge/br_sysfs_if.c +++ b/net/bridge/br_sysfs_if.c @@ -61,7 +61,6 @@ static int store_flag(struct net_bridge_port *p, unsigned long v, if (flags != p->flags) { p->flags = flags; br_port_flags_change(p, mask); - br_ifinfo_notify(RTM_NEWLINK, p); } return 0; } @@ -253,8 +252,10 @@ static ssize_t brport_store(struct kobject *kobj, spin_lock_bh(&p->br->lock); ret = brport_attr->store(p, val); spin_unlock_bh(&p->br->lock); - if (ret == 0) + if (!ret) { + br_ifinfo_notify(RTM_NEWLINK, p); ret = count; + } } rtnl_unlock(); } -- 2.20.1