From e028e4b8dc93be7bc3ff9e0b94cb68d7f104883b Mon Sep 17 00:00:00 2001 From: Vlad Yasevich Date: Fri, 16 May 2014 09:59:16 -0400 Subject: bridge: Keep track of ports capable of automatic discovery. By default, ports on the bridge are capable of automatic discovery of nodes located behind the port. This is accomplished via flooding of unknown traffic (BR_FLOOD) and learning the mac addresses from these packets (BR_LEARNING). If the above functionality is disabled by turning off these flags, the port requires static configuration in the form of static FDB entries to function properly. This patch adds functionality to keep track of all ports capable of automatic discovery. This will later be used to control promiscuity settings. Acked-by: Michael S. Tsirkin Signed-off-by: Vlad Yasevich Signed-off-by: David S. Miller --- net/bridge/br_netlink.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'net/bridge/br_netlink.c') diff --git a/net/bridge/br_netlink.c b/net/bridge/br_netlink.c index e8844d975b32..26edb518b839 100644 --- a/net/bridge/br_netlink.c +++ b/net/bridge/br_netlink.c @@ -328,6 +328,7 @@ static void br_set_port_flag(struct net_bridge_port *p, struct nlattr *tb[], static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) { int err; + unsigned long old_flags = p->flags; br_set_port_flag(p, tb, IFLA_BRPORT_MODE, BR_HAIRPIN_MODE); br_set_port_flag(p, tb, IFLA_BRPORT_GUARD, BR_BPDU_GUARD); @@ -353,6 +354,8 @@ static int br_setport(struct net_bridge_port *p, struct nlattr *tb[]) if (err) return err; } + + br_port_flags_change(p, old_flags ^ p->flags); return 0; } -- cgit v1.2.3