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
7static bool
8tc_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
51static int
52tc_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
75struct 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