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Commit f55688c4 authored by Steve Wise's avatar Steve Wise Committed by Jason Gunthorpe
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iw_cxgb4: Only validate the MSN for successful completions 



If the RECV CQE is in error, ignore the MSN check.  This was causing
recvs that were flushed into the sw cq to be completed with the wrong
status (BAD_MSN instead of FLUSHED).

Cc: stable@vger.kernel.org
Signed-off-by: default avatarSteve Wise <swise@opengridcomputing.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent 9d98e19b

drivers/infiniband/hw/cxgb4/cq.c

+3 −3
Original line number Diff line number Diff line
@@ -571,10 +571,10 @@ static int poll_cq(struct t4_wq *wq, struct t4_cq *cq, struct t4_cqe *cqe, 
			ret = -EAGAIN;

			goto skip_cqe;

		}

		if (unlikely((CQE_WRID_MSN(hw_cqe) != (wq->rq.msn)))) {

		if (unlikely(!CQE_STATUS(hw_cqe) &&

			     CQE_WRID_MSN(hw_cqe) != wq->rq.msn)) {

			t4_set_wq_in_error(wq);

			hw_cqe->header |= htonl(CQE_STATUS_V(T4_ERR_MSN));

			goto proc_cqe;

			hw_cqe->header |= cpu_to_be32(CQE_STATUS_V(T4_ERR_MSN));

		}

		goto proc_cqe;

	}