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RDMA/ocrdma: Fix CQE expansion of unsignaled WQE

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Fix CQE expansion of unsignaled WQE -- don't expand the CQE when the
WQE index of the completed CQE matches with last pending WQE (tail) in
the queue.

Signed-off-by: Parav Pandit <parav.pandit@emulex.com>
Signed-off-by: Roland Dreier <roland@purestorage.com>
This commit is contained in:
Parav Pandit 2012-08-17 14:45:33 +00:00 committed by Roland Dreier
parent fea7a08acb
commit ae3bca90e9
1 changed files with 4 additions and 4 deletions
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8
drivers/infiniband/hw/ocrdma/ocrdma_verbs.c
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@ -2219,7 +2219,6 @@ static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp,
u32 wqe_idx;
if (!qp->wqe_wr_id_tbl[tail].signaled) {
expand = true; /* CQE cannot be consumed yet */
*polled = false; /* WC cannot be consumed yet */
} else {
ibwc->status = IB_WC_SUCCESS;
@ -2227,10 +2226,11 @@ static bool ocrdma_poll_success_scqe(struct ocrdma_qp *qp,
ibwc->qp = &qp->ibqp;
ocrdma_update_wc(qp, ibwc, tail);
*polled = true;
wqe_idx = le32_to_cpu(cqe->wq.wqeidx) & OCRDMA_CQE_WQEIDX_MASK;
if (tail != wqe_idx)
expand = true; /* Coalesced CQE can't be consumed yet */
}
wqe_idx = le32_to_cpu(cqe->wq.wqeidx) & OCRDMA_CQE_WQEIDX_MASK;
if (tail != wqe_idx)
expand = true; /* Coalesced CQE can't be consumed yet */
ocrdma_hwq_inc_tail(&qp->sq);
return expand;
}