From: Jon Paul Maloy Date: Tue, 21 Jul 2015 10:42:28 +0000 (-0400) Subject: tipc: fix compatibility bug X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=16040894b26af9f85d9395f072c53d76a44eba21;p=deliverable%2Flinux.git tipc: fix compatibility bug In commit d999297c3dbbe7fdd832f7fa4ec84301e170b3e6 ("tipc: reduce locking scope during packet reception") we introduced a new function tipc_link_proto_rcv(). This function contains a bug, so that it sometimes by error sends out a non-zero link priority value in created protocol messages. The bug may lead to an extra link reset at initial link establising with older nodes. This will never happen more than once, whereafter the link will work as intended. We fix this bug in this commit. Signed-off-by: Jon Maloy Signed-off-by: David S. Miller --- diff --git a/net/tipc/link.c b/net/tipc/link.c index 55b675d20de8..b63d57390bb7 100644 --- a/net/tipc/link.c +++ b/net/tipc/link.c @@ -1639,7 +1639,7 @@ static int tipc_link_proto_rcv(struct tipc_link *l, struct sk_buff *skb, rcvgap = peers_snd_nxt - l->rcv_nxt; if (rcvgap || (msg_probe(hdr))) tipc_link_build_proto_msg(l, STATE_MSG, 0, rcvgap, - 0, l->mtu, xmitq); + 0, 0, xmitq); tipc_link_release_pkts(l, msg_ack(hdr)); /* If NACK, retransmit will now start at right position */