net/mlx5e: Offload TC eswitch rules for VFs belonging to different PFs

When the merged eswitch capability is supported, allow offloading rules
between VFs which belong to different PFs (and hence have different
eswitch affinity).
Signed-off-by: Rabie Loulou <rabiel@mellanox.com>
Reviewed-by: Or Gerlitz <ogerlitz@mellanox.com>
Reviewed-by: Roi Dayan <roid@mellanox.com>
Reviewed-by: Shahar Klein <shahark@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>

drivers/net/ethernet/mellanox/mlx5/core/en_tc.c

@@ -2077,6 +2077,20 @@ static int mlx5e_route_lookup_ipv4(struct mlx5e_priv *priv,
 	return 0;
 }
 
+static bool is_merged_eswitch_dev(struct mlx5e_priv *priv,
+				  struct net_device *peer_netdev)
+{
+	struct mlx5e_priv *peer_priv;
+
+	peer_priv = netdev_priv(peer_netdev);
+
+	return (MLX5_CAP_ESW(priv->mdev, merged_eswitch) &&
+		(priv->netdev->netdev_ops == peer_netdev->netdev_ops) &&
+		same_hw_devs(priv, peer_priv) &&
+		MLX5_VPORT_MANAGER(peer_priv->mdev) &&
+		(peer_priv->mdev->priv.eswitch->mode == SRIOV_OFFLOADS));
+}
+
 static int mlx5e_route_lookup_ipv6(struct mlx5e_priv *priv,
 				   struct net_device *mirred_dev,
 				   struct net_device **out_dev,
@@ -2535,7 +2549,8 @@ static int parse_tc_fdb_actions(struct mlx5e_priv *priv, struct tcf_exts *exts,
 			out_dev = tcf_mirred_dev(a);
 
 			if (switchdev_port_same_parent_id(priv->netdev,
-							  out_dev)) {
+							  out_dev) ||
+			    is_merged_eswitch_dev(priv, out_dev)) {
 				action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST |
 					  MLX5_FLOW_CONTEXT_ACTION_COUNT;
 				out_priv = netdev_priv(out_dev);