drivers/net/ethernet/mellanox/mlx5/core/en/tc_ct.h

   1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
   2 /* Copyright (c) 2018 Mellanox Technologies. */
   3
   4 #ifndef __MLX5_EN_TC_CT_H__
   5 #define __MLX5_EN_TC_CT_H__
   6
   7 #include <net/pkt_cls.h>
   8 #include <linux/mlx5/fs.h>
   9 #include <net/tc_act/tc_ct.h>
  10
  11 #include "en.h"
  12
  13 struct mlx5_esw_flow_attr;
  14 struct mlx5e_tc_mod_hdr_acts;
  15 struct mlx5_rep_uplink_priv;
  16 struct mlx5e_tc_flow;
  17 struct mlx5e_priv;
  18
  19 struct mlx5_ct_flow;
  20
  21 struct nf_flowtable;
  22
  23 struct mlx5_ct_attr {
  24         u16 zone;
  25         u16 ct_action;
  26         struct mlx5_ct_flow *ct_flow;
  27         struct nf_flowtable *nf_ft;
  28 };
  29
  30 #define zone_to_reg_ct {\
  31         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\
  32         .moffset = 0,\
  33         .mlen = 2,\
  34         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  35                                  misc_parameters_2.metadata_reg_c_2) + 2,\
  36 }
  37
  38 #define ctstate_to_reg_ct {\
  39         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\
  40         .moffset = 2,\
  41         .mlen = 2,\
  42         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  43                                  misc_parameters_2.metadata_reg_c_2),\
  44 }
  45
  46 #define mark_to_reg_ct {\
  47         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_3,\
  48         .moffset = 0,\
  49         .mlen = 4,\
  50         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  51                                  misc_parameters_2.metadata_reg_c_3),\
  52 }
  53
  54 #define labels_to_reg_ct {\
  55         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_4,\
  56         .moffset = 0,\
  57         .mlen = 4,\
  58         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  59                                  misc_parameters_2.metadata_reg_c_4),\
  60 }
  61
  62 #define fteid_to_reg_ct {\
  63         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_5,\
  64         .moffset = 0,\
  65         .mlen = 4,\
  66         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  67                                  misc_parameters_2.metadata_reg_c_5),\
  68 }
  69
  70 #define tupleid_to_reg_ct {\
  71         .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,\
  72         .moffset = 0,\
  73         .mlen = 3,\
  74         .soffset = MLX5_BYTE_OFF(fte_match_param,\
  75                                  misc_parameters_2.metadata_reg_c_1),\
  76 }
  77
  78 #define TUPLE_ID_BITS (mlx5e_tc_attr_to_reg_mappings[TUPLEID_TO_REG].mlen * 8)
  79 #define TUPLE_ID_MAX GENMASK(TUPLE_ID_BITS - 1, 0)
  80
  81 #if IS_ENABLED(CONFIG_MLX5_TC_CT)
  82
  83 int
  84 mlx5_tc_ct_init(struct mlx5_rep_uplink_priv *uplink_priv);
  85 void
  86 mlx5_tc_ct_clean(struct mlx5_rep_uplink_priv *uplink_priv);
  87
  88 int
  89 mlx5_tc_ct_parse_match(struct mlx5e_priv *priv,
  90                        struct mlx5_flow_spec *spec,
  91                        struct flow_cls_offload *f,
  92                        struct netlink_ext_ack *extack);
  93 int
  94 mlx5_tc_ct_parse_action(struct mlx5e_priv *priv,
  95                         struct mlx5_esw_flow_attr *attr,
  96                         const struct flow_action_entry *act,
  97                         struct netlink_ext_ack *extack);
  98
  99 struct mlx5_flow_handle *
 100 mlx5_tc_ct_flow_offload(struct mlx5e_priv *priv,
 101                         struct mlx5e_tc_flow *flow,
 102                         struct mlx5_flow_spec *spec,
 103                         struct mlx5_esw_flow_attr *attr,
 104                         struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts);
 105 void
 106 mlx5_tc_ct_delete_flow(struct mlx5e_priv *priv,
 107                        struct mlx5e_tc_flow *flow,
 108                        struct mlx5_esw_flow_attr *attr);
 109
 110 bool
 111 mlx5e_tc_ct_restore_flow(struct mlx5_rep_uplink_priv *uplink_priv,
 112                          struct sk_buff *skb, u32 tupleid);
 113
 114 #else /* CONFIG_MLX5_TC_CT */
 115
 116 static inline int
 117 mlx5_tc_ct_init(struct mlx5_rep_uplink_priv *uplink_priv)
 118 {
 119         return 0;
 120 }
 121
 122 static inline void
 123 mlx5_tc_ct_clean(struct mlx5_rep_uplink_priv *uplink_priv)
 124 {
 125 }
 126
 127 static inline int
 128 mlx5_tc_ct_parse_match(struct mlx5e_priv *priv,
 129                        struct mlx5_flow_spec *spec,
 130                        struct flow_cls_offload *f,
 131                        struct netlink_ext_ack *extack)
 132 {
 133         if (!flow_rule_match_key(f->rule, FLOW_DISSECTOR_KEY_CT))
 134                 return 0;
 135
 136         NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
 137         netdev_warn(priv->netdev, "mlx5 tc ct offload isn't enabled.\n");
 138         return -EOPNOTSUPP;
 139 }
 140
 141 static inline int
 142 mlx5_tc_ct_parse_action(struct mlx5e_priv *priv,
 143                         struct mlx5_esw_flow_attr *attr,
 144                         const struct flow_action_entry *act,
 145                         struct netlink_ext_ack *extack)
 146 {
 147         NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
 148         netdev_warn(priv->netdev, "mlx5 tc ct offload isn't enabled.\n");
 149         return -EOPNOTSUPP;
 150 }
 151
 152 static inline struct mlx5_flow_handle *
 153 mlx5_tc_ct_flow_offload(struct mlx5e_priv *priv,
 154                         struct mlx5e_tc_flow *flow,
 155                         struct mlx5_flow_spec *spec,
 156                         struct mlx5_esw_flow_attr *attr,
 157                         struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts)
 158 {
 159         return ERR_PTR(-EOPNOTSUPP);
 160 }
 161
 162 static inline void
 163 mlx5_tc_ct_delete_flow(struct mlx5e_priv *priv,
 164                        struct mlx5e_tc_flow *flow,
 165                        struct mlx5_esw_flow_attr *attr)
 166 {
 167 }
 168
 169 static inline bool
 170 mlx5e_tc_ct_restore_flow(struct mlx5_rep_uplink_priv *uplink_priv,
 171                          struct sk_buff *skb, u32 tupleid)
 172 {
 173         if  (!tupleid)
 174                 return  true;
 175
 176         return false;
 177 }
 178
 179 #endif /* !IS_ENABLED(CONFIG_MLX5_TC_CT) */
 180 #endif /* __MLX5_EN_TC_CT_H__ */