From 5138e86f176055e8194bf30fa2e05bc839ce1a1f Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Tue, 4 Apr 2017 09:23:41 -0400 Subject: [PATCH] rtnetlink: Convert rtnetlink_event to white list The rtnetlink_event currently functions as a blacklist where we block cerntain netdev events from being sent to user space. As a result, events have been added to the system that userspace probably doesn't care about. This patch converts the implementation to the white list so that newly events would have to be specifically added to the list to be sent to userspace. This would force new event implementers to consider whether a given event is usefull to user space or if it's just a kernel event. Signed-off-by: Vladislav Yasevich Signed-off-by: David S. Miller --- net/core/rtnetlink.c | 31 +++++++++++++++++-------------- 1 file changed, 17 insertions(+), 14 deletions(-) diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c index 9c3947a43eff..58419da7961b 100644 --- a/net/core/rtnetlink.c +++ b/net/core/rtnetlink.c @@ -4116,22 +4116,25 @@ static int rtnetlink_event(struct notifier_block *this, unsigned long event, voi struct net_device *dev = netdev_notifier_info_to_dev(ptr); switch (event) { - case NETDEV_UP: - case NETDEV_DOWN: - case NETDEV_PRE_UP: - case NETDEV_POST_INIT: - case NETDEV_REGISTER: - case NETDEV_CHANGE: - case NETDEV_PRE_TYPE_CHANGE: - case NETDEV_GOING_DOWN: - case NETDEV_UNREGISTER: - case NETDEV_UNREGISTER_FINAL: - case NETDEV_RELEASE: - case NETDEV_JOIN: - case NETDEV_BONDING_INFO: + case NETDEV_REBOOT: + case NETDEV_CHANGEMTU: + case NETDEV_CHANGEADDR: + case NETDEV_CHANGENAME: + case NETDEV_FEAT_CHANGE: + case NETDEV_BONDING_FAILOVER: + case NETDEV_POST_TYPE_CHANGE: + case NETDEV_NOTIFY_PEERS: + case NETDEV_CHANGEUPPER: + case NETDEV_RESEND_IGMP: + case NETDEV_PRECHANGEMTU: + case NETDEV_CHANGEINFODATA: + case NETDEV_PRECHANGEUPPER: + case NETDEV_CHANGELOWERSTATE: + case NETDEV_UDP_TUNNEL_PUSH_INFO: + case NETDEV_CHANGE_TX_QUEUE_LEN: + rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); break; default: - rtmsg_ifinfo(RTM_NEWLINK, dev, 0, GFP_KERNEL); break; } return NOTIFY_DONE; -- 2.20.1