libhns: Fix the owner bit error of sq in new io

[ Upstream commit c292b78 ]

Currently, the update of the head position of an SQ precedes the setting
of owner bit of WQEs in new io. It may cause HW to mistakenly assume that
the SQ has been flipped while it hasn't, further leading to failure to
obtain WQEs.

This patch sets the onwer bit before the update of the head position of
an SQ.

Fixes: 36446a5 ("libhns: Extended QP supports the new post send mechanism")
Signed-off-by: Luoyouming <[email protected]>
Signed-off-by: Junxian Huang <[email protected]>
Signed-off-by: Nicolas Morey <[email protected]>

providers/hns/hns_roce_u_hw_v2.c

@@ -1963,6 +1963,9 @@ init_rc_wqe(struct hns_roce_qp *qp, uint64_t wr_id, unsigned int opcode)
 
  qp->sq.wrid[wqe_idx] = wr_id;
  qp->cur_wqe = wqe;
+
+ enable_wqe(qp, wqe, qp->sq.head);
+
  qp->sq.head++;
 
  return wqe;
@@ -1984,9 +1987,6 @@ static void wr_set_sge_rc(struct ibv_qp_ex *ibv_qp, uint32_t lkey,
  wqe->msg_len = htole32(length);
  hr_reg_write(wqe, RCWQE_LEN0, length);
  hr_reg_write(wqe, RCWQE_SGE_NUM, !!length);
- /* ignore ex sge start index */
-
- enable_wqe(qp, wqe, qp->sq.head);
 }
 
 static void set_sgl_rc(struct hns_roce_v2_wqe_data_seg *dseg,
@@ -2289,6 +2289,9 @@ init_ud_wqe(struct hns_roce_qp *qp, uint64_t wr_id, unsigned int opcode)
 
  qp->sq.wrid[wqe_idx] = wr_id;
  qp->cur_wqe = wqe;
+
+ enable_wqe(qp, wqe, qp->sq.head);
+
  qp->sq.head++;
 
  return wqe;
@@ -2358,7 +2361,6 @@ static void wr_set_sge_ud(struct ibv_qp_ex *ibv_qp, uint32_t lkey,
  dseg->len = htole32(length);
 
  qp->sge_info.start_idx++;
- enable_wqe(qp, wqe, qp->sq.head);
 }
 
 static void wr_set_sge_list_ud(struct ibv_qp_ex *ibv_qp, size_t num_sge,