IB/srpt: Detect session shutdown reliably

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The Last WQE Reached event is only generated after one or more work
requests have been queued on the QP associated with a session. Since
session shutdown can start before any work requests have been queued,
use a zero-length RDMA write to wait until a QP has been drained.

Additionally, rework the code for closing and disconnecting a session.

Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Cc: Sagi Grimberg <sagig@mellanox.com>
Cc: Alex Estrin <alex.estrin@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>

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Bart Van Assche 2016-02-11 11:08:53 -08:00 • committed by Doug Ledford

parent 8628991fbe

commit aaf45bd83e

2 changed files with 150 additions and 150 deletions

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282

drivers/infiniband/ulp/srpt/ib_srpt.c

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18

drivers/infiniband/ulp/srpt/ib_srpt.h

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