gtphub: make rate_ctr unique

* compute unique rate counter index when allocating new gtphub tunnel
* propagate rate counter allocation error to upper layers
* log and gracefully handle tunnel allocation error

Change-Id: I0e07f95c36de369bcd0691b8d0fd47c844abe5da
Related: OS#2757
This commit is contained in:
Max 2017-12-20 12:14:50 +01:00
parent d3e4e51317
commit 8bd4bbaeaa

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