Commit 26008247 authored Jun 25, 2006 by Allan Stephens Committed by David S. Miller Jun 25, 2006

[TIPC]: Links now validate destination node specified by incoming messages.



This fix prevents link flopping and name table inconsistency problems arising
when a node is assigned a different <Z.C.N> value than it used previously.
(Changing the <Z.C.N> value causes other nodes to have two link endpoints
sending to the same MAC address using two different destination <Z.C.N> values,
requiring the receiving node to filter out the unwanted messages.)

Signed-off-by: Allan Stephens <allan.stephens@windriver.com>
Signed-off-by: Per Liden <per.liden@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 9688243b

net/tipc/link.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -1720,6 +1720,11 @@ void tipc_recv_msg(struct sk_buff head, struct tipc_bearer tb_ptr)
		link_recv_non_seq(buf);
		continue;
		}

		if (unlikely(!msg_short(msg) &&
		(msg_destnode(msg) != tipc_own_addr)))
		goto cont;

		n_ptr = tipc_node_find(msg_prevnode(msg));
		if (unlikely(!n_ptr))
		goto cont;

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