diff mbox series

[net,11/16] net/mlx5e: Reject mirroring on source port change encap rules

Message ID 20210519060523.17875-12-saeed@kernel.org
State New
Headers show
Series mlx5 fixes 2021-05-18 | expand

Commit Message

Saeed Mahameed May 19, 2021, 6:05 a.m. UTC 
From: Vlad Buslov <vladbu@nvidia.com>

Rules with MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE dest flag are
translated to destination FT in eswitch. Currently it is not possible to
mirror such rules because firmware doesn't support mixing FT and Vport
destinations in single rule when one of them adds encapsulation. Since the
only use case for MLX5_ESW_DEST_CHAIN_WITH_SRC_PORT_CHANGE destination is
support for tunnel endpoints on VF and trying to offload such rule with
mirror action causes either crash in fs_core or firmware error with
syndrome 0xff6a1d, reject all such rules in mlx5 TC layer.

Fixes: 10742efc20a4 ("net/mlx5e: VF tunnel TX traffic offloading")
Signed-off-by: Vlad Buslov <vladbu@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
---
 drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
index 882bafba43f2..bccdb43a880b 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -1399,6 +1399,12 @@  mlx5e_tc_add_fdb_flow(struct mlx5e_priv *priv,
 		esw_attr->dests[out_index].mdev = out_priv->mdev;
 	}
 
+	if (vf_tun && esw_attr->out_count > 1) {
+		NL_SET_ERR_MSG_MOD(extack, "VF tunnel encap with mirroring is not supported");
+		err = -EOPNOTSUPP;
+		goto err_out;
+	}
+
 	err = mlx5_eswitch_add_vlan_action(esw, attr);
 	if (err)
 		goto err_out;