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_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_fs_chains; 20 struct mlx5_tc_ct_priv; 21 struct mlx5_ct_flow; 22 23 struct nf_flowtable; 24 25 struct mlx5_ct_attr { 26 u16 zone; 27 u16 ct_action; 28 struct mlx5_ct_flow *ct_flow; 29 struct nf_flowtable *nf_ft; 30 u32 ct_labels_id; 31 }; 32 33 #define zone_to_reg_ct {\ 34 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\ 35 .moffset = 0,\ 36 .mlen = 2,\ 37 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 38 misc_parameters_2.metadata_reg_c_2) + 2,\ 39 } 40 41 #define ctstate_to_reg_ct {\ 42 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\ 43 .moffset = 2,\ 44 .mlen = 2,\ 45 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 46 misc_parameters_2.metadata_reg_c_2),\ 47 } 48 49 #define mark_to_reg_ct {\ 50 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_3,\ 51 .moffset = 0,\ 52 .mlen = 4,\ 53 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 54 misc_parameters_2.metadata_reg_c_3),\ 55 } 56 57 #define labels_to_reg_ct {\ 58 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_4,\ 59 .moffset = 0,\ 60 .mlen = 4,\ 61 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 62 misc_parameters_2.metadata_reg_c_4),\ 63 } 64 65 #define fteid_to_reg_ct {\ 66 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_5,\ 67 .moffset = 0,\ 68 .mlen = 4,\ 69 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 70 misc_parameters_2.metadata_reg_c_5),\ 71 } 72 73 #define zone_restore_to_reg_ct {\ 74 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,\ 75 .moffset = 0,\ 76 .mlen = (ESW_ZONE_ID_BITS / 8),\ 77 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 78 misc_parameters_2.metadata_reg_c_1) + 3,\ 79 } 80 81 #define nic_zone_restore_to_reg_ct {\ 82 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,\ 83 .moffset = 2,\ 84 .mlen = (ESW_ZONE_ID_BITS / 8),\ 85 } 86 87 #define REG_MAPPING_MLEN(reg) (mlx5e_tc_attr_to_reg_mappings[reg].mlen) 88 #define REG_MAPPING_MOFFSET(reg) (mlx5e_tc_attr_to_reg_mappings[reg].moffset) 89 #define REG_MAPPING_SHIFT(reg) (REG_MAPPING_MOFFSET(reg) * 8) 90 91 #if IS_ENABLED(CONFIG_MLX5_TC_CT) 92 93 struct mlx5_tc_ct_priv * 94 mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains, 95 struct mod_hdr_tbl *mod_hdr, 96 enum mlx5_flow_namespace_type ns_type); 97 void 98 mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv); 99 100 void 101 mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr); 102 103 int 104 mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv, 105 struct mlx5_flow_spec *spec, 106 struct flow_cls_offload *f, 107 struct mlx5_ct_attr *ct_attr, 108 struct netlink_ext_ack *extack); 109 int mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec); 110 int 111 mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv, 112 struct mlx5_flow_attr *attr, 113 const struct flow_action_entry *act, 114 struct netlink_ext_ack *extack); 115 116 struct mlx5_flow_handle * 117 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv, 118 struct mlx5e_tc_flow *flow, 119 struct mlx5_flow_spec *spec, 120 struct mlx5_flow_attr *attr, 121 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts); 122 void 123 mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv, 124 struct mlx5e_tc_flow *flow, 125 struct mlx5_flow_attr *attr); 126 127 bool 128 mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv, 129 struct sk_buff *skb, u8 zone_restore_id); 130 131 #else /* CONFIG_MLX5_TC_CT */ 132 133 static inline struct mlx5_tc_ct_priv * 134 mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains, 135 struct mod_hdr_tbl *mod_hdr, 136 enum mlx5_flow_namespace_type ns_type) 137 { 138 return NULL; 139 } 140 141 static inline void 142 mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv) 143 { 144 } 145 146 static inline void 147 mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr) {} 148 149 static inline int 150 mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv, 151 struct mlx5_flow_spec *spec, 152 struct flow_cls_offload *f, 153 struct mlx5_ct_attr *ct_attr, 154 struct netlink_ext_ack *extack) 155 { 156 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 157 158 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CT)) 159 return 0; 160 161 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled."); 162 return -EOPNOTSUPP; 163 } 164 165 static inline int 166 mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec) 167 { 168 return 0; 169 } 170 171 static inline int 172 mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv, 173 struct mlx5_flow_attr *attr, 174 const struct flow_action_entry *act, 175 struct netlink_ext_ack *extack) 176 { 177 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled."); 178 return -EOPNOTSUPP; 179 } 180 181 static inline struct mlx5_flow_handle * 182 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv, 183 struct mlx5e_tc_flow *flow, 184 struct mlx5_flow_spec *spec, 185 struct mlx5_flow_attr *attr, 186 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts) 187 { 188 return ERR_PTR(-EOPNOTSUPP); 189 } 190 191 static inline void 192 mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv, 193 struct mlx5e_tc_flow *flow, 194 struct mlx5_flow_attr *attr) 195 { 196 } 197 198 static inline bool 199 mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv, 200 struct sk_buff *skb, u8 zone_restore_id) 201 { 202 if (!zone_restore_id) 203 return true; 204 205 return false; 206 } 207 208 #endif /* !IS_ENABLED(CONFIG_MLX5_TC_CT) */ 209 #endif /* __MLX5_EN_TC_CT_H__ */ 210