From 6830b468259b45e3b73070474b8cec9388aa8c11 Mon Sep 17 00:00:00 2001 From: Tonghao Zhang Date: Thu, 1 Aug 2019 16:40:59 +0800 Subject: [PATCH] net/mlx5e: Allow dropping specific tunnel packets In some case, we don't want to allow specific tunnel packets to host that can avoid to take up high CPU (e.g network attacks). But other tunnel packets which not matched in hardware will be sent to host too. $ tc filter add dev vxlan_sys_4789 \ protocol ip chain 0 parent ffff: prio 1 handle 1 \ flower dst_ip 1.1.1.100 ip_proto tcp dst_port 80 \ enc_dst_ip 2.2.2.100 enc_key_id 100 enc_dst_port 4789 \ action tunnel_key unset pipe action drop Signed-off-by: Tonghao Zhang Reviewed-by: Roi Dayan Signed-off-by: Saeed Mahameed --- drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c index dc5fc3350b65..c5d75e2ecf54 100644 --- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c +++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c @@ -2485,7 +2485,8 @@ static bool actions_match_supported(struct mlx5e_priv *priv, if (flow_flag_test(flow, EGRESS) && !((actions & MLX5_FLOW_CONTEXT_ACTION_DECAP) || - (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP))) + (actions & MLX5_FLOW_CONTEXT_ACTION_VLAN_POP) || + (actions & MLX5_FLOW_CONTEXT_ACTION_DROP))) return false; if (actions & MLX5_FLOW_CONTEXT_ACTION_MOD_HDR) -- 2.39.5