iw_cxgb4: reflect the original WR opcode in drain cqes

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The flush/drain logic was not retaining the original wr opcode in
its completion.  This can cause problems if the application uses
the completion opcode to make decisions.

Use bit 10 of the CQE header word to indicate the CQE is a special
drain completion, and save the original WR opcode in the cqe header
opcode field.

Fixes: 4fe7c2962e ("iw_cxgb4: refactor sq/rq drain logic")

Cc: stable@vger.kernel.org
Signed-off-by: Steve Wise <swise@opengridcomputing.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>

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This commit is contained in:

Steve Wise 2017-12-19 10:29:25 -08:00 • committed by Jason Gunthorpe

parent f55688c454

commit 96a236ed28

4 changed files with 50 additions and 11 deletions

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7

drivers/infiniband/hw/cxgb4/cq.c

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2

drivers/infiniband/hw/cxgb4/iw_cxgb4.h

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46

drivers/infiniband/hw/cxgb4/qp.c

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6

drivers/infiniband/hw/cxgb4/t4.h

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