diff options
author | Ismail, Mustafa <mustafa.ismail@intel.com> | 2016-04-18 15:33:09 (GMT) |
---|---|---|
committer | Doug Ledford <dledford@redhat.com> | 2016-04-28 20:32:54 (GMT) |
commit | c2b75ef7dcb9cf5e237955b0d0fa48918978493d (patch) | |
tree | 3498f1c39a2deca98e8fd25936364a17a08f12dd /drivers | |
parent | fa4153796121e573be7f9b8f59ac7eb0694d1ac0 (diff) | |
download | linux-c2b75ef7dcb9cf5e237955b0d0fa48918978493d.tar.xz |
RDMA/i40iw: Adding queue drain functions
Adding sq and rq drain functions, which block until all
previously posted wr-s in the specified queue have completed.
A completion object is signaled to unblock the thread,
when the last cqe for the corresponding queue is processed.
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Faisal Latif <faisal.latif@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.c | 38 | ||||
-rw-r--r-- | drivers/infiniband/hw/i40iw/i40iw_verbs.h | 2 |
2 files changed, 40 insertions, 0 deletions
diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.c b/drivers/infiniband/hw/i40iw/i40iw_verbs.c index 196d6f0..bf4e1e3 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.c +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.c @@ -789,6 +789,8 @@ static struct ib_qp *i40iw_create_qp(struct ib_pd *ibpd, return ERR_PTR(err_code); } } + init_completion(&iwqp->sq_drained); + init_completion(&iwqp->rq_drained); return &iwqp->ibqp; error: @@ -1582,6 +1584,32 @@ static int i40iw_map_mr_sg(struct ib_mr *ibmr, struct scatterlist *sg, int sg_ne } /** + * i40iw_drain_sq - drain the send queue + * @ibqp: ib qp pointer + */ +static void i40iw_drain_sq(struct ib_qp *ibqp) +{ + struct i40iw_qp *iwqp = to_iwqp(ibqp); + struct i40iw_sc_qp *qp = &iwqp->sc_qp; + + if (I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) + wait_for_completion(&iwqp->sq_drained); +} + +/** + * i40iw_drain_rq - drain the receive queue + * @ibqp: ib qp pointer + */ +static void i40iw_drain_rq(struct ib_qp *ibqp) +{ + struct i40iw_qp *iwqp = to_iwqp(ibqp); + struct i40iw_sc_qp *qp = &iwqp->sc_qp; + + if (I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) + wait_for_completion(&iwqp->rq_drained); +} + +/** * i40iw_hwreg_mr - send cqp command for memory registration * @iwdev: iwarp device * @iwmr: iwarp mr pointer @@ -2218,6 +2246,7 @@ static int i40iw_poll_cq(struct ib_cq *ibcq, enum i40iw_status_code ret; struct i40iw_cq_uk *ukcq; struct i40iw_sc_qp *qp; + struct i40iw_qp *iwqp; unsigned long flags; iwcq = (struct i40iw_cq *)ibcq; @@ -2268,6 +2297,13 @@ static int i40iw_poll_cq(struct ib_cq *ibcq, qp = (struct i40iw_sc_qp *)cq_poll_info.qp_handle; entry->qp = (struct ib_qp *)qp->back_qp; entry->src_qp = cq_poll_info.qp_id; + iwqp = (struct i40iw_qp *)qp->back_qp; + if (iwqp->iwarp_state > I40IW_QP_STATE_RTS) { + if (!I40IW_RING_MORE_WORK(qp->qp_uk.sq_ring)) + complete(&iwqp->sq_drained); + if (!I40IW_RING_MORE_WORK(qp->qp_uk.rq_ring)) + complete(&iwqp->rq_drained); + } entry->byte_len = cq_poll_info.bytes_xfered; entry++; cqe_count++; @@ -2514,6 +2550,8 @@ static struct i40iw_ib_device *i40iw_init_rdma_device(struct i40iw_device *iwdev iwibdev->ibdev.query_device = i40iw_query_device; iwibdev->ibdev.create_ah = i40iw_create_ah; iwibdev->ibdev.destroy_ah = i40iw_destroy_ah; + iwibdev->ibdev.drain_sq = i40iw_drain_sq; + iwibdev->ibdev.drain_rq = i40iw_drain_rq; iwibdev->ibdev.alloc_mr = i40iw_alloc_mr; iwibdev->ibdev.map_mr_sg = i40iw_map_mr_sg; iwibdev->ibdev.iwcm = kzalloc(sizeof(*iwibdev->ibdev.iwcm), GFP_KERNEL); diff --git a/drivers/infiniband/hw/i40iw/i40iw_verbs.h b/drivers/infiniband/hw/i40iw/i40iw_verbs.h index 0acb6c8..0069be8 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_verbs.h +++ b/drivers/infiniband/hw/i40iw/i40iw_verbs.h @@ -170,5 +170,7 @@ struct i40iw_qp { struct i40iw_pbl *iwpbl; struct i40iw_dma_mem q2_ctx_mem; struct i40iw_dma_mem ietf_mem; + struct completion sq_drained; + struct completion rq_drained; }; #endif |