RDMA/mlx5: Set GRH fields in query QP on RoCE

GRH fields such as sgid_index, hop limit, et. are set in the QP context
when QP is created/modified.

Currently, when query QP is performed, we fill the GRH fields only if the
GRH bit is set in the QP context, but this bit is not set for RoCE. Adjust
the check so we will set all relevant data for the RoCE too.

Since this data is returned to userspace, the below is an ABI regression.

Fixes: d8966fc ("IB/core: Use rdma_ah_attr accessor functions")
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Aharon Landau <[email protected]>
Reviewed-by: Maor Gottlieb <[email protected]>
Signed-off-by: Leon Romanovsky <[email protected]>
Signed-off-by: Jason Gunthorpe <[email protected]>

Author: Aharon Landau

drivers/infiniband/hw/mlx5/qp.c

@@ -5558,7 +5558,9 @@ static void to_rdma_ah_attr(struct mlx5_ib_dev *ibdev,
 	rdma_ah_set_path_bits(ah_attr, path->grh_mlid & 0x7f);
 	rdma_ah_set_static_rate(ah_attr,
 				path->static_rate ? path->static_rate - 5 : 0);
-	if (path->grh_mlid & (1 << 7)) {
+
+	if (path->grh_mlid & (1 << 7) ||
+	    ah_attr->type == RDMA_AH_ATTR_TYPE_ROCE) {
 		u32 tc_fl = be32_to_cpu(path->tclass_flowlabel);
 
 		rdma_ah_set_grh(ah_attr, NULL,