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 = 16,\ 37 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 38 misc_parameters_2.metadata_reg_c_2),\ 39 } 40 41 #define ctstate_to_reg_ct {\ 42 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_2,\ 43 .moffset = 16,\ 44 .mlen = 16,\ 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 = 32,\ 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 = 32,\ 61 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 62 misc_parameters_2.metadata_reg_c_4),\ 63 } 64 65 /* 8 LSB of metadata C5 are reserved for packet color */ 66 #define fteid_to_reg_ct {\ 67 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_5,\ 68 .moffset = 8,\ 69 .mlen = 24,\ 70 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 71 misc_parameters_2.metadata_reg_c_5),\ 72 } 73 74 #define zone_restore_to_reg_ct {\ 75 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_1,\ 76 .moffset = 0,\ 77 .mlen = ESW_ZONE_ID_BITS,\ 78 .soffset = MLX5_BYTE_OFF(fte_match_param,\ 79 misc_parameters_2.metadata_reg_c_1),\ 80 } 81 82 #define nic_zone_restore_to_reg_ct {\ 83 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,\ 84 .moffset = 16,\ 85 .mlen = ESW_ZONE_ID_BITS,\ 86 } 87 88 #define MLX5_CT_ZONE_BITS MLX5_REG_MAPPING_MBITS(ZONE_TO_REG) 89 #define MLX5_CT_ZONE_MASK MLX5_REG_MAPPING_MASK(ZONE_TO_REG) 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 struct mlx5e_post_act *post_act); 98 void 99 mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv); 100 101 void 102 mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr); 103 104 int 105 mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv, 106 struct mlx5_flow_spec *spec, 107 struct flow_cls_offload *f, 108 struct mlx5_ct_attr *ct_attr, 109 struct netlink_ext_ack *extack); 110 int mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec); 111 int 112 mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv, 113 struct mlx5_flow_attr *attr, 114 struct mlx5e_tc_mod_hdr_acts *mod_acts, 115 const struct flow_action_entry *act, 116 struct netlink_ext_ack *extack); 117 118 struct mlx5_flow_handle * 119 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv, 120 struct mlx5_flow_spec *spec, 121 struct mlx5_flow_attr *attr, 122 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts); 123 void 124 mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv, 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 int 132 mlx5_tc_ct_set_ct_clear_regs(struct mlx5_tc_ct_priv *priv, 133 struct mlx5e_tc_mod_hdr_acts *mod_acts); 134 135 #else /* CONFIG_MLX5_TC_CT */ 136 137 static inline struct mlx5_tc_ct_priv * 138 mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains, 139 struct mod_hdr_tbl *mod_hdr, 140 enum mlx5_flow_namespace_type ns_type, 141 struct mlx5e_post_act *post_act) 142 { 143 return NULL; 144 } 145 146 static inline void 147 mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv) 148 { 149 } 150 151 static inline void 152 mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr) {} 153 154 static inline int 155 mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv, 156 struct mlx5_flow_spec *spec, 157 struct flow_cls_offload *f, 158 struct mlx5_ct_attr *ct_attr, 159 struct netlink_ext_ack *extack) 160 { 161 struct flow_rule *rule = flow_cls_offload_flow_rule(f); 162 163 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CT)) 164 return 0; 165 166 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled."); 167 return -EOPNOTSUPP; 168 } 169 170 static inline int 171 mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec) 172 { 173 return 0; 174 } 175 176 static inline int 177 mlx5_tc_ct_set_ct_clear_regs(struct mlx5_tc_ct_priv *priv, 178 struct mlx5e_tc_mod_hdr_acts *mod_acts) 179 { 180 return -EOPNOTSUPP; 181 } 182 183 static inline int 184 mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv, 185 struct mlx5_flow_attr *attr, 186 struct mlx5e_tc_mod_hdr_acts *mod_acts, 187 const struct flow_action_entry *act, 188 struct netlink_ext_ack *extack) 189 { 190 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled."); 191 return -EOPNOTSUPP; 192 } 193 194 static inline struct mlx5_flow_handle * 195 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv, 196 struct mlx5_flow_spec *spec, 197 struct mlx5_flow_attr *attr, 198 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts) 199 { 200 return ERR_PTR(-EOPNOTSUPP); 201 } 202 203 static inline void 204 mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv, 205 struct mlx5_flow_attr *attr) 206 { 207 } 208 209 static inline bool 210 mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv, 211 struct sk_buff *skb, u8 zone_restore_id) 212 { 213 if (!zone_restore_id) 214 return true; 215 216 return false; 217 } 218 219 #endif /* !IS_ENABLED(CONFIG_MLX5_TC_CT) */ 220 #endif /* __MLX5_EN_TC_CT_H__ */ 221