IB/mlx4: Set GRH:HopLimit when sending globally routed MADs

This is the same issue discovered in mthca by Rolf Manderscheid
<rvm@obsidianresearch.com>.

Signed-off-by: Roland Dreier <rolandd@cisco.com>

diff --git a/drivers/infiniband/hw/mlx4/qp.c b/drivers/infiniband/hw/mlx4/qp.c
index 9c362fa7146597bd3df50a78ea733b7c36692710..0cf8b95128fd6ece1d66ef9d400bb40f754ee51c 100644 (file)
--- a/drivers/infiniband/hw/mlx4/qp.c
+++ b/drivers/infiniband/hw/mlx4/qp.c
@@ -952,6 +952,7 @@ static int build_mlx_header(struct mlx4_ib_sqp *sqp, struct ib_send_wr *wr,
                        (be32_to_cpu(ah->av.sl_tclass_flowlabel) >> 20) & 0xff;
                sqp->ud_header.grh.flow_label    =
                        ah->av.sl_tclass_flowlabel & cpu_to_be32(0xfffff);
+               sqp->ud_header.grh.hop_limit     = ah->av.hop_limit;
                ib_get_cached_gid(ib_dev, be32_to_cpu(ah->av.port_pd) >> 24,
                                  ah->av.gid_index, &sqp->ud_header.grh.source_gid);
                memcpy(sqp->ud_header.grh.destination_gid.raw,