IB/ehca: Set SEND_GRH flag for all non-LL UD QPs on eHCA2

Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/drivers/infiniband/hw/ehca/ehca_qp.c b/drivers/infiniband/hw/ehca/ehca_qp.c
index fa3e03050347..3a4b2bfdb06b 100644
--- a/drivers/infiniband/hw/ehca/ehca_qp.c
+++ b/drivers/infiniband/hw/ehca/ehca_qp.c
@@ -1054,6 +1054,17 @@ static int internal_modify_qp(struct ib_qp *ibqp,
                  "ehca_qp=%p qp_num=%x <VALID STATE CHANGE> qp_state_xsit=%x",
                  my_qp, ibqp->qp_num, statetrans);
 
+        /* eHCA2 rev2 and higher require the SEND_GRH_FLAG to be set
+         * in non-LL UD QPs.
+         */
+        if ((my_qp->qp_type == IB_QPT_UD) &&
+            (my_qp->ext_type != EQPT_LLQP) &&
+            (statetrans == IB_QPST_INIT2RTR) &&
+            (shca->hw_level >= 0x22)) {
+                update_mask |= EHCA_BMASK_SET(MQPCB_MASK_SEND_GRH_FLAG, 1);
+                mqpcb->send_grh_flag = 1;
+        }
+
         /* sqe -> rts: set purge bit of bad wqe before actual trans */
         if ((my_qp->qp_type == IB_QPT_UD ||
              my_qp->qp_type == IB_QPT_GSI ||