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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: 280cfc4b74 ("i40iw: user kernel shared files")
Signed-off-by: Mustafa Ismail <mustafa.ismail@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Reviewed-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Mustafa Ismail 2017-10-03 11:11:47 -05:00 committed by Doug Ledford
parent 1660a26adb
commit abae49e433
2 changed files with 14 additions and 0 deletions
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13
drivers/infiniband/hw/i40iw/i40iw_uk.c
View File

@ -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;

1
drivers/infiniband/hw/i40iw/i40iw_user.h
View File

@ -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;
};