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

commit 2d7e3ff7b6f2c614eb21d0dc348957a47eaffb57 upstream.

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: d8966fcd4c25 ("IB/core: Use rdma_ah_attr accessor functions")
Link: https://lore.kernel.org/r/20200413132028.930109-1-leon@kernel.org
Signed-off-by: Aharon Landau <aharonl@mellanox.com>
Reviewed-by: Maor Gottlieb <maorg@mellanox.com>
Signed-off-by: Leon Romanovsky <leonro@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/infiniband/hw/mlx5/qp.c b/drivers/infiniband/hw/mlx5/qp.c
index 0cb60072c82f3fbcf1cbe74f1fa64f92d93c5dc2..d835ef2ce23c09718c59d8d719c42559b5e12fb5 100644 (file)
--- a/drivers/infiniband/hw/mlx5/qp.c
+++ b/drivers/infiniband/hw/mlx5/qp.c
@@ -4362,7 +4362,9 @@ 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,