1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB 2 // Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved. 3 4 #include "act.h" 5 #include "en/tc_priv.h" 6 7 static bool 8 tc_act_can_offload_mirred_nic(struct mlx5e_tc_act_parse_state *parse_state, 9 const struct flow_action_entry *act, 10 int act_index, 11 struct mlx5_flow_attr *attr) 12 { 13 struct netlink_ext_ack *extack = parse_state->extack; 14 struct mlx5e_tc_flow *flow = parse_state->flow; 15 struct net_device *out_dev = act->dev; 16 struct mlx5e_priv *priv = flow->priv; 17 18 if (act->id != FLOW_ACTION_REDIRECT) 19 return false; 20 21 if (priv->netdev->netdev_ops != out_dev->netdev_ops || 22 !mlx5e_same_hw_devs(priv, netdev_priv(out_dev))) { 23 NL_SET_ERR_MSG_MOD(extack, 24 "devices are not on same switch HW, can't offload forwarding"); 25 netdev_warn(priv->netdev, 26 "devices %s %s not on same switch HW, can't offload forwarding\n", 27 netdev_name(priv->netdev), 28 out_dev->name); 29 return false; 30 } 31 32 return true; 33 } 34 35 static int 36 tc_act_parse_mirred_nic(struct mlx5e_tc_act_parse_state *parse_state, 37 const struct flow_action_entry *act, 38 struct mlx5e_priv *priv, 39 struct mlx5_flow_attr *attr) 40 { 41 attr->parse_attr->mirred_ifindex[0] = act->dev->ifindex; 42 flow_flag_set(parse_state->flow, HAIRPIN); 43 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; 44 45 return 0; 46 } 47 48 struct mlx5e_tc_act mlx5e_tc_act_mirred_nic = { 49 .can_offload = tc_act_can_offload_mirred_nic, 50 .parse_action = tc_act_parse_mirred_nic, 51 .is_terminating_action = true, 52 }; 53