From abae49e433c5b02b6ff583eee00321eee2bad18a Mon Sep 17 00:00:00 2001 From: Mustafa Ismail Date: Tue, 3 Oct 2017 11:11:47 -0500 Subject: i40iw: Do not generate CQE for RTR on QP flush If RTR WQE is posted and QP is flushed, a CQE is incorrectly generated for the RTR WQE. Add code to look for the RTR and not generate a CQE when QP is flushed. Fixes: 280cfc4b74e6 ("i40iw: user kernel shared files") Signed-off-by: Mustafa Ismail Signed-off-by: Shiraz Saleem Reviewed-by: Leon Romanovsky Signed-off-by: Doug Ledford --- drivers/infiniband/hw/i40iw/i40iw_uk.c | 13 +++++++++++++ drivers/infiniband/hw/i40iw/i40iw_user.h | 1 + 2 files changed, 14 insertions(+) diff --git a/drivers/infiniband/hw/i40iw/i40iw_uk.c b/drivers/infiniband/hw/i40iw/i40iw_uk.c index 0aadb7a0d1aa..42dde5924bb5 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_uk.c +++ b/drivers/infiniband/hw/i40iw/i40iw_uk.c @@ -821,6 +821,18 @@ static enum i40iw_status_code i40iw_cq_poll_completion(struct i40iw_cq_uk *cq, I40IW_RING_SET_TAIL(qp->rq_ring, array_idx + 1); pring = &qp->rq_ring; } else { + if (qp->first_sq_wq) { + qp->first_sq_wq = false; + if (!wqe_idx && (qp->sq_ring.head == qp->sq_ring.tail)) { + I40IW_RING_MOVE_HEAD_NOCHECK(cq->cq_ring); + I40IW_RING_MOVE_TAIL(cq->cq_ring); + set_64bit_val(cq->shadow_area, 0, + I40IW_RING_GETCURRENT_HEAD(cq->cq_ring)); + memset(info, 0, sizeof(struct i40iw_cq_poll_info)); + return i40iw_cq_poll_completion(cq, info); + } + } + if (info->comp_status != I40IW_COMPL_STATUS_FLUSHED) { info->wr_id = qp->sq_wrtrk_array[wqe_idx].wrid; info->bytes_xfered = qp->sq_wrtrk_array[wqe_idx].wr_len; @@ -988,6 +1000,7 @@ enum i40iw_status_code i40iw_qp_uk_init(struct i40iw_qp_uk *qp, I40IW_RING_MOVE_TAIL(qp->sq_ring); I40IW_RING_MOVE_HEAD(qp->initial_ring, ret_code); qp->swqe_polarity = 1; + qp->first_sq_wq = true; qp->swqe_polarity_deferred = 1; qp->rwqe_polarity = 0; diff --git a/drivers/infiniband/hw/i40iw/i40iw_user.h b/drivers/infiniband/hw/i40iw/i40iw_user.h index 84be6f13b9c5..15e8f55983fd 100644 --- a/drivers/infiniband/hw/i40iw/i40iw_user.h +++ b/drivers/infiniband/hw/i40iw/i40iw_user.h @@ -376,6 +376,7 @@ struct i40iw_qp_uk { u8 rwqe_polarity; u8 rq_wqe_size; u8 rq_wqe_size_multiplier; + bool first_sq_wq; bool deferred_flag; }; -- cgit v1.2.3-59-g8ed1b