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_redirect_ingress(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_parse_attr *parse_attr; 15 struct net_device *out_dev = act->dev; 16 struct mlx5_esw_flow_attr *esw_attr; 17 18 parse_attr = attr->parse_attr; 19 esw_attr = attr->esw_attr; 20 21 if (!out_dev) 22 return false; 23 24 if (!netif_is_ovs_master(out_dev)) { 25 NL_SET_ERR_MSG_MOD(extack, 26 "redirect to ingress is supported only for OVS internal ports"); 27 return false; 28 } 29 30 if (netif_is_ovs_master(parse_attr->filter_dev)) { 31 NL_SET_ERR_MSG_MOD(extack, 32 "redirect to ingress is not supported from internal port"); 33 return false; 34 } 35 36 if (!parse_state->ptype_host) { 37 NL_SET_ERR_MSG_MOD(extack, 38 "redirect to int port ingress requires ptype=host action"); 39 return false; 40 } 41 42 if (esw_attr->out_count) { 43 NL_SET_ERR_MSG_MOD(extack, 44 "redirect to int port ingress is supported only as single destination"); 45 return false; 46 } 47 48 return true; 49 } 50 51 static int 52 tc_act_parse_redirect_ingress(struct mlx5e_tc_act_parse_state *parse_state, 53 const struct flow_action_entry *act, 54 struct mlx5e_priv *priv, 55 struct mlx5_flow_attr *attr) 56 { 57 struct mlx5_esw_flow_attr *esw_attr = attr->esw_attr; 58 struct net_device *out_dev = act->dev; 59 int err; 60 61 attr->action |= MLX5_FLOW_CONTEXT_ACTION_FWD_DEST; 62 63 err = mlx5e_set_fwd_to_int_port_actions(priv, attr, out_dev->ifindex, 64 MLX5E_TC_INT_PORT_INGRESS, 65 &attr->action, esw_attr->out_count); 66 if (err) 67 return err; 68 69 parse_state->if_count = 0; 70 esw_attr->out_count++; 71 72 return 0; 73 } 74 75 struct mlx5e_tc_act mlx5e_tc_act_redirect_ingress = { 76 .can_offload = tc_act_can_offload_redirect_ingress, 77 .parse_action = tc_act_parse_redirect_ingress, 78 }; 79 80