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Commit f8a4e76c authored by Tatyana Nikolova's avatar Tatyana Nikolova Committed by Doug Ledford
Browse files

RDMA/i40iw: Fix for checking if the QP is destroyed 



Fix for checking if the QP associated with a completion
has been destroyed while processing CQ elements.
If that is the case, move the CQ head to the next element
and continue completion processing.

Signed-off-by: default avatarTatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: default avatarFaisal Latif <faisal.latif@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 6c2f7619

drivers/infiniband/hw/i40iw/i40iw_status.h

+1 −0
Original line number Diff line number Diff line
@@ -95,6 +95,7 @@ enum i40iw_status_code { 
	I40IW_ERR_INVALID_MAC_ADDR = -65,

	I40IW_ERR_BAD_STAG      = -66,

	I40IW_ERR_CQ_COMPL_ERROR = -67,

	I40IW_ERR_QUEUE_DESTROYED = -68



};

#endif

drivers/infiniband/hw/i40iw/i40iw_uk.c

+5 −0
Original line number Diff line number Diff line
@@ -802,6 +802,10 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq, 
	info->is_srq = (bool)RS_64(qword3, I40IWCQ_SRQ);



	qp = (struct i40iw_qp_uk *)(unsigned long)comp_ctx;

	if (!qp) {

		ret_code = I40IW_ERR_QUEUE_DESTROYED;

		goto exit;

	}

	wqe_idx = (u32)RS_64(qword3, I40IW_CQ_WQEIDX);

	info->qp_handle = (i40iw_qp_handle)(unsigned long)qp;
@@ -859,6 +863,7 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq, 


	ret_code = 0;



exit:

	if (!ret_code &&

	    (info->comp_status == I40IW_COMPL_STATUS_FLUSHED))

		if (pring && (I40IW_RING_MORE_WORK(*pring)))

drivers/infiniband/hw/i40iw/i40iw_verbs.c

+2 −0
Original line number Diff line number Diff line
@@ -2259,6 +2259,8 @@ static int i40iw_poll_cq(struct ib_cq *ibcq, 
		ret = ukcq->ops.iw_cq_poll_completion(ukcq, &cq_poll_info, true);

		if (ret == I40IW_ERR_QUEUE_EMPTY) {

			break;

		} else if (ret == I40IW_ERR_QUEUE_DESTROYED) {

			continue;

		} else if (ret) {

			if (!cqe_count)

				cqe_count = -1;