drivers/net/ethernet/mellanox/mlx5/core/en/tc/act/ct.c

   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 #include "en/tc_ct.h"
   7
   8 static int
   9 tc_act_parse_ct(struct mlx5e_tc_act_parse_state *parse_state,
  10                 const struct flow_action_entry *act,
  11                 struct mlx5e_priv *priv,
  12                 struct mlx5_flow_attr *attr)
  13 {
  14         int err;
  15
  16         err = mlx5_tc_ct_parse_action(parse_state->ct_priv, attr, act, parse_state->extack);
  17         if (err)
  18                 return err;
  19
  20         if (mlx5e_is_eswitch_flow(parse_state->flow))
  21                 attr->esw_attr->split_count = attr->esw_attr->out_count;
  22
  23         attr->flags |= MLX5_ATTR_FLAG_CT;
  24
  25         return 0;
  26 }
  27
  28 static int
  29 tc_act_post_parse_ct(struct mlx5e_tc_act_parse_state *parse_state,
  30                      struct mlx5e_priv *priv,
  31                      struct mlx5_flow_attr *attr)
  32 {
  33         if (!(attr->flags & MLX5_ATTR_FLAG_CT))
  34                 return 0;
  35
  36         return mlx5_tc_ct_flow_offload(parse_state->ct_priv, attr);
  37 }
  38
  39 static bool
  40 tc_act_is_multi_table_act_ct(struct mlx5e_priv *priv,
  41                              const struct flow_action_entry *act,
  42                              struct mlx5_flow_attr *attr)
  43 {
  44         if (act->ct.action & TCA_CT_ACT_CLEAR)
  45                 return false;
  46
  47         return true;
  48 }
  49
  50 static bool
  51 tc_act_is_missable_ct(const struct flow_action_entry *act)
  52 {
  53         return !(act->ct.action & TCA_CT_ACT_CLEAR);
  54 }
  55
  56 struct mlx5e_tc_act mlx5e_tc_act_ct = {
  57         .parse_action = tc_act_parse_ct,
  58         .post_parse = tc_act_post_parse_ct,
  59         .is_multi_table_act = tc_act_is_multi_table_act_ct,
  60         .is_missable = tc_act_is_missable_ct,
  61 };
  62