From: Jon Paul Maloy Date: Fri, 15 Apr 2016 17:33:06 +0000 (-0400) Subject: tipc: ensure that first packets on link are sent in order X-Git-Tag: v4.7-rc1~154^2~276^2~1 X-Git-Url: http://git.cascardo.eti.br/?a=commitdiff_plain;h=de7e07f9ee14f47d05aa43046404c2904f0247dc;p=cascardo%2Flinux.git tipc: ensure that first packets on link are sent in order In some link establishment scenarios we see that packet #2 may be sent out before packet #1, forcing the receiver to demand retransmission of the missing packet. This is harmless, but may cause confusion among people tracing the packet flow. Since this is extremely easy to fix, we do so by adding en extra send call to the bearer immediately after the link has come up. Acked-by: Ying Xue Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- diff --git a/net/tipc/node.c b/net/tipc/node.c index ace178fd3850..b00e12cda66c 100644 --- a/net/tipc/node.c +++ b/net/tipc/node.c @@ -581,8 +581,12 @@ static void __tipc_node_link_up(struct tipc_node *n, int bearer_id, static void tipc_node_link_up(struct tipc_node *n, int bearer_id, struct sk_buff_head *xmitq) { + struct tipc_media_addr *maddr; + tipc_node_write_lock(n); __tipc_node_link_up(n, bearer_id, xmitq); + maddr = &n->links[bearer_id].maddr; + tipc_bearer_xmit(n->net, bearer_id, xmitq, maddr); tipc_node_write_unlock(n); }