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Commit 168d40ee authored by stephen hemminger's avatar stephen hemminger Committed by David S. Miller
Browse files

bridge: multicast flood 



Fix unsafe usage of RCU. Would never work on Alpha SMP because
of lack of rcu_dereference()

Signed-off-by: default avatarStephen Hemminger <shemminger@vyatta.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 7e80c124

net/bridge/br_forward.c

+2 −2
Original line number Diff line number Diff line
@@ -216,7 +216,7 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 


	prev = NULL;



	rp = br->router_list.first;

	rp = rcu_dereference(br->router_list.first);

	p = mdst ? mdst->ports : NULL;

	while (p || rp) {

		lport = p ? p->port : NULL;
@@ -233,7 +233,7 @@ static void br_multicast_flood(struct net_bridge_mdb_entry *mdst, 
		if ((unsigned long)lport >= (unsigned long)port)

			p = p->next;

		if ((unsigned long)rport >= (unsigned long)port)

			rp = rp->next;

			rp = rcu_dereference(rp->next);

	}



	if (!prev)