Merge branch 'smc-fixes'

Ursula Braun says:

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net/smc: fixes 2019-02-04

here are more fixes in the smc code for the net tree:
Patch 1 fixes an IB-related problem with SMCR.
Patch 2 fixes a cursor problem for one-way traffic.
Patch 3 fixes a problem with RMB-reusage.
Patch 4 fixes a closing issue.
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Signed-off-by: David S. Miller <davem@davemloft.net>