Commit 5679ee78 authored Dec 18, 2018 by Zhenbo Gao Committed by David S. Miller Dec 18, 2018

tipc: handle broadcast NAME_DISTRIBUTOR packet when receiving it



NAME_DISTRIBUTOR messages are transmitted through unicast link on TIPC
2.0, by contrast, the messages are delivered through broadcast link on
TIPC 1.7. But at present, NAME_DISTRIBUTOR messages received by
broadcast link cannot be handled in tipc_rcv() until an unicast message
arrives, which may lead to a significant delay to update name table.

To avoid this delay, we will also deal with broadcast NAME_DISTRIBUTOR
message on broadcast receive path.

Signed-off-by: Zhenbo Gao <zhenbo.gao@windriver.com>
Reviewed-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent 935b8a59

net/tipc/node.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1549,6 +1549,10 @@ static void tipc_node_bc_rcv(struct net net, struct sk_buff skb, int bearer_id
		if (!skb_queue_empty(&be->inputq1))
		tipc_node_mcast_rcv(n);

		/* Handle NAME_DISTRIBUTOR messages sent from 1.7 nodes */
		if (!skb_queue_empty(&n->bc_entry.namedq))
		tipc_named_rcv(net, &n->bc_entry.namedq);

		/* If reassembly or retransmission failure => reset all links to peer */
		if (rc & TIPC_LINK_DOWN_EVT)
		tipc_node_reset_links(n);

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