From: Tuong Lien <[email protected]>
Date: Wed, 6 Nov 2019 18:12:17 +0700
> When preparing tunnel packets for the link failover or synchronization,
> as for the safe algorithm, we added a dummy packet on the pair link but
> never sent it out. In the case of failover, the pair link will be reset
> anyway. But for link synching, it will always result in retransmission
> of the dummy packet after that.
> We have also observed that such the retransmission at the early stage
> when a new node comes in a large cluster will take some time and hard
> to be done, leading to the repeated retransmit failures and the link is
> reset.
>
> Since in commit 4929a932be33 ("tipc: optimize link synching mechanism")
> we have already built a dummy 'TUNNEL_PROTOCOL' message on the new link
> for the synchronization, there's no need for the dummy on the pair one,
> this commit will skip it when the new mechanism takes in place. In case
> nothing exists in the pair link's transmq, the link synching will just
> start and stop shortly on the peer side.
>
> The patch is backward compatible.
>
> Acked-by: Jon Maloy <[email protected]>
> Tested-by: Hoang Le <[email protected]>
> Signed-off-by: Tuong Lien <[email protected]>
Applied, thanks Tuong.
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