From: Jon Maloy <jon.ma...@ericsson.com> Date: Wed, 11 May 2016 19:15:45 -0400
> When an ACTIVATE or data packet is received in a link in state > ESTABLISHING, the link does not immediately change state to > ESTABLISHED, but does instead return a LINK_UP event to the caller, > which will execute the state change in a different lock context. > > This non-atomic approach incurs a low risk that we may have two > LINK_UP events pending simultaneously for the same link, resulting > in the final part of the setup procedure being executed twice. The > only potential harm caused by this it that we may see two LINK_UP > events issued to subsribers of the topology server, something that > may cause confusion. > > This commit eliminates this risk by checking if the link is already > up before proceeding with the second half of the setup. > > Signed-off-by: Jon Maloy <jon.ma...@ericsson.com> Applied.
