net/mlx5e: Infrastructure for duplicated offloading of TC flows

Under uplink LAG or multipath schemes, traffic that matches one flow
might arrive on both uplink ports and transmitted through both
as part of supporting aggregation and high-availability.

To cope with the fact that the SW model might use logical SW port
(e.g uplink team or bond) but we have two HW ports with e-switch on
each, there are cases where in order to offload a SW TC rule we
need to duplicate it to two HW flows.

Since each HW rule has its own counter we also aggregate the counter
of both rules when a flow stats query is executed from user-space.

Introduce the changes for the different elements (add/delete/stats),
currently nothing is duplicated.

Signed-off-by: Roi Dayan <roid@mellanox.com>
Signed-off-by: Aviv Heller <avivh@mellanox.com>
Signed-off-by: Shahar Klein <shahark@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
index a6927ca3d4ca..76cb57202474 100644
--- a/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/eswitch_offloads.c
@@ -563,7 +563,7 @@ static void peer_miss_rules_setup(struct mlx5_core_dev *peer_dev,
 	dest->type = MLX5_FLOW_DESTINATION_TYPE_VPORT;
 	dest->vport.num = 0;
 	dest->vport.vhca_id = MLX5_CAP_GEN(peer_dev, vhca_id);
-	dest->vport.vhca_id_valid = 1;
+	dest->vport.flags |= MLX5_FLOW_DEST_VPORT_VHCA_ID;
 }
 
 static int esw_add_fdb_peer_miss_rules(struct mlx5_eswitch *esw,
@@ -1313,8 +1313,11 @@ static int mlx5_esw_offloads_pair(struct mlx5_eswitch *esw,
 	return 0;
 }
 
+void mlx5e_tc_clean_fdb_peer_flows(struct mlx5_eswitch *esw);
+
 static void mlx5_esw_offloads_unpair(struct mlx5_eswitch *esw)
 {
+	mlx5e_tc_clean_fdb_peer_flows(esw);
 	esw_del_fdb_peer_miss_rules(esw);
 }
 
@@ -1365,6 +1368,9 @@ static void esw_offloads_devcom_init(struct mlx5_eswitch *esw)
 {
 	struct mlx5_devcom *devcom = esw->dev->priv.devcom;
 
+	INIT_LIST_HEAD(&esw->offloads.peer_flows);
+	mutex_init(&esw->offloads.peer_mutex);
+
 	if (!MLX5_CAP_ESW(esw->dev, merged_eswitch))
 		return;