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// SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
// Copyright (c) 2021, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#include <net/psample.h>
#include "act.h"
#include "en/tc_priv.h"
#include "en/tc/act/sample.h"
static bool
tc_act_can_offload_sample(struct mlx5e_tc_act_parse_state *parse_state,
const struct flow_action_entry *act,
int act_index,
struct mlx5_flow_attr *attr)
{
struct netlink_ext_ack *extack = parse_state->extack;
bool ct_nat;
ct_nat = attr->ct_attr.ct_action & TCA_CT_ACT_NAT;
if (flow_flag_test(parse_state->flow, CT) && ct_nat) {
NL_SET_ERR_MSG_MOD(extack, "Sample action with CT NAT is not supported");
return false;
}
return true;
}
static int
tc_act_parse_sample(struct mlx5e_tc_act_parse_state *parse_state,
const struct flow_action_entry *act,
struct mlx5e_priv *priv,
struct mlx5_flow_attr *attr)
{
struct mlx5e_sample_attr *sample_attr = &attr->sample_attr;
sample_attr->rate = act->sample.rate;
sample_attr->group_num = act->sample.psample_group->group_num;
if (act->sample.truncate)
sample_attr->trunc_size = act->sample.trunc_size;
attr->flags |= MLX5_ATTR_FLAG_SAMPLE;
flow_flag_set(parse_state->flow, SAMPLE);
return 0;
}
bool
mlx5e_tc_act_sample_is_multi_table(struct mlx5_core_dev *mdev,
struct mlx5_flow_attr *attr)
{
if (MLX5_CAP_GEN(mdev, reg_c_preserve) ||
attr->action & MLX5_FLOW_CONTEXT_ACTION_DECAP)
return true;
return false;
}
static bool
tc_act_is_multi_table_act_sample(struct mlx5e_priv *priv,
const struct flow_action_entry *act,
struct mlx5_flow_attr *attr)
{
return mlx5e_tc_act_sample_is_multi_table(priv->mdev, attr);
}
struct mlx5e_tc_act mlx5e_tc_act_sample = {
.can_offload = tc_act_can_offload_sample,
.parse_action = tc_act_parse_sample,
.is_multi_table_act = tc_act_is_multi_table_act_sample,
};
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