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Commit 52e3b42a authored by oulijun's avatar oulijun Committed by Jason Gunthorpe
Browse files

RDMA/hns: Filter for zero length of sge in hip08 kernel mode 



When the length of sge is zero, the driver need to filter it

Signed-off-by: default avatarLijun Ou <oulijun@huawei.com>
Signed-off-by: default avatarJason Gunthorpe <jgg@mellanox.com>
parent ace1c541

drivers/infiniband/hw/hns/hns_roce_hw_v2.c

+20 −9
Original line number Diff line number Diff line
@@ -230,28 +230,39 @@ static int hns_roce_v2_post_send(struct ib_qp *ibqp, struct ib_send_wr *wr, 
				     V2_RC_SEND_WQE_BYTE_4_INLINE_S, 1);

		} else {

			if (wr->num_sge <= 2) {

				for (i = 0; i < wr->num_sge; i++)

					set_data_seg_v2(dseg + i,

				for (i = 0; i < wr->num_sge; i++) {

					if (likely(wr->sg_list[i].length)) {

						set_data_seg_v2(dseg,

							       wr->sg_list + i);

						dseg++;

					}

				}

			} else {

				roce_set_field(rc_sq_wqe->byte_20,

				V2_RC_SEND_WQE_BYTE_20_MSG_START_SGE_IDX_M,

				V2_RC_SEND_WQE_BYTE_20_MSG_START_SGE_IDX_S,

				sge_ind & (qp->sge.sge_cnt - 1));



				for (i = 0; i < 2; i++)

					set_data_seg_v2(dseg + i,

				for (i = 0; i < 2; i++) {

					if (likely(wr->sg_list[i].length)) {

						set_data_seg_v2(dseg,

							       wr->sg_list + i);

						dseg++;

					}

				}



				dseg = get_send_extend_sge(qp,

					sge_ind & (qp->sge.sge_cnt - 1));



				for (i = 0; i < wr->num_sge - 2; i++) {

					set_data_seg_v2(dseg + i,

					if (likely(wr->sg_list[i + 2].length)) {

						set_data_seg_v2(dseg,

							   wr->sg_list + 2 + i);

						dseg++;

						sge_ind++;

					}

				}

			}



			roce_set_field(rc_sq_wqe->byte_16,

				       V2_RC_SEND_WQE_BYTE_16_SGE_NUM_M,