From 87a0625cf1c76caeaa15c576a0b2fcad4b9387d0 Mon Sep 17 00:00:00 2001 From: Dmytro Linkin Date: Thu, 24 Jun 2021 13:37:36 +0300 Subject: [PATCH] net/mlx5e: Use correct eswitch for stack devices with lag [ Upstream commit f9d196bd632b8b79261ec3366c30ec3923ea9a02 ] If link aggregation is used within stack devices driver rejects encap rules if PF of the VF tunnel device is down. This happens because route resolved for other PF and its eswitch instance is used to determine correct vport. To fix that use devcom feature to retrieve other eswitch instance if failed to find vport for the 1st eswitch and LAG is active. Fixes: 10742efc20a4 ("net/mlx5e: VF tunnel TX traffic offloading") Signed-off-by: Dmytro Linkin Reviewed-by: Roi Dayan Signed-off-by: Saeed Mahameed Signed-off-by: Sasha Levin --- .../net/ethernet/mellanox/mlx5/core/en_tc.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index 47bd20ad81080..ced6ff0bc9160 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -1310,6 +1310,7 @@ bool mlx5e_tc_is_vf_tunnel(struct net_device *out_dev, struct net_device *route_ int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *route_dev, u16 *vport) { struct mlx5e_priv *out_priv, *route_priv; + struct mlx5_devcom *devcom = NULL; struct mlx5_core_dev *route_mdev; struct mlx5_eswitch *esw; u16 vhca_id; @@ -1321,7 +1322,24 @@ int mlx5e_tc_query_route_vport(struct net_device *out_dev, struct net_device *ro route_mdev = route_priv->mdev; vhca_id = MLX5_CAP_GEN(route_mdev, vhca_id); + if (mlx5_lag_is_active(out_priv->mdev)) { + /* In lag case we may get devices from different eswitch instances. + * If we failed to get vport num, it means, mostly, that we on the wrong + * eswitch. + */ + err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); + if (err != -ENOENT) + return err; + + devcom = out_priv->mdev->priv.devcom; + esw = mlx5_devcom_get_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); + if (!esw) + return -ENODEV; + } + err = mlx5_eswitch_vhca_id_to_vport(esw, vhca_id, vport); + if (devcom) + mlx5_devcom_release_peer_data(devcom, MLX5_DEVCOM_ESW_OFFLOADS); return err; }