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 #define fteid_to_reg_ct {\
66 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_C_5,\
67 .moffset = 0,\
68 .mlen = 32,\
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,\
77 .soffset = MLX5_BYTE_OFF(fte_match_param,\
78 misc_parameters_2.metadata_reg_c_1),\
79 }
80
81 #define nic_zone_restore_to_reg_ct {\
82 .mfield = MLX5_ACTION_IN_FIELD_METADATA_REG_B,\
83 .moffset = 16,\
84 .mlen = ESW_ZONE_ID_BITS,\
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
90 #if IS_ENABLED(CONFIG_MLX5_TC_CT)
91
92 struct mlx5_tc_ct_priv *
93 mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains,
94 struct mod_hdr_tbl *mod_hdr,
95 enum mlx5_flow_namespace_type ns_type,
96 struct mlx5e_post_act *post_act);
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 struct mlx5e_tc_mod_hdr_acts *mod_acts,
114 const struct flow_action_entry *act,
115 struct netlink_ext_ack *extack);
116
117 struct mlx5_flow_handle *
118 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv,
119 struct mlx5e_tc_flow *flow,
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 mlx5e_tc_flow *flow,
126 struct mlx5_flow_attr *attr);
127
128 bool
129 mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv,
130 struct sk_buff *skb, u8 zone_restore_id);
131
132 #else /* CONFIG_MLX5_TC_CT */
133
134 static inline struct mlx5_tc_ct_priv *
mlx5_tc_ct_init(struct mlx5e_priv * priv,struct mlx5_fs_chains * chains,struct mod_hdr_tbl * mod_hdr,enum mlx5_flow_namespace_type ns_type,struct mlx5e_post_act * post_act)135 mlx5_tc_ct_init(struct mlx5e_priv *priv, struct mlx5_fs_chains *chains,
136 struct mod_hdr_tbl *mod_hdr,
137 enum mlx5_flow_namespace_type ns_type,
138 struct mlx5e_post_act *post_act)
139 {
140 return NULL;
141 }
142
143 static inline void
mlx5_tc_ct_clean(struct mlx5_tc_ct_priv * ct_priv)144 mlx5_tc_ct_clean(struct mlx5_tc_ct_priv *ct_priv)
145 {
146 }
147
148 static inline void
mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv * priv,struct mlx5_ct_attr * ct_attr)149 mlx5_tc_ct_match_del(struct mlx5_tc_ct_priv *priv, struct mlx5_ct_attr *ct_attr) {}
150
151 static inline int
mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv * priv,struct mlx5_flow_spec * spec,struct flow_cls_offload * f,struct mlx5_ct_attr * ct_attr,struct netlink_ext_ack * extack)152 mlx5_tc_ct_match_add(struct mlx5_tc_ct_priv *priv,
153 struct mlx5_flow_spec *spec,
154 struct flow_cls_offload *f,
155 struct mlx5_ct_attr *ct_attr,
156 struct netlink_ext_ack *extack)
157 {
158 struct flow_rule *rule = flow_cls_offload_flow_rule(f);
159
160 if (!flow_rule_match_key(rule, FLOW_DISSECTOR_KEY_CT))
161 return 0;
162
163 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
164 return -EOPNOTSUPP;
165 }
166
167 static inline int
mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec * spec)168 mlx5_tc_ct_add_no_trk_match(struct mlx5_flow_spec *spec)
169 {
170 return 0;
171 }
172
173 static inline int
mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv * priv,struct mlx5_flow_attr * attr,struct mlx5e_tc_mod_hdr_acts * mod_acts,const struct flow_action_entry * act,struct netlink_ext_ack * extack)174 mlx5_tc_ct_parse_action(struct mlx5_tc_ct_priv *priv,
175 struct mlx5_flow_attr *attr,
176 struct mlx5e_tc_mod_hdr_acts *mod_acts,
177 const struct flow_action_entry *act,
178 struct netlink_ext_ack *extack)
179 {
180 NL_SET_ERR_MSG_MOD(extack, "mlx5 tc ct offload isn't enabled.");
181 return -EOPNOTSUPP;
182 }
183
184 static inline struct mlx5_flow_handle *
mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv * priv,struct mlx5e_tc_flow * flow,struct mlx5_flow_spec * spec,struct mlx5_flow_attr * attr,struct mlx5e_tc_mod_hdr_acts * mod_hdr_acts)185 mlx5_tc_ct_flow_offload(struct mlx5_tc_ct_priv *priv,
186 struct mlx5e_tc_flow *flow,
187 struct mlx5_flow_spec *spec,
188 struct mlx5_flow_attr *attr,
189 struct mlx5e_tc_mod_hdr_acts *mod_hdr_acts)
190 {
191 return ERR_PTR(-EOPNOTSUPP);
192 }
193
194 static inline void
mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv * priv,struct mlx5e_tc_flow * flow,struct mlx5_flow_attr * attr)195 mlx5_tc_ct_delete_flow(struct mlx5_tc_ct_priv *priv,
196 struct mlx5e_tc_flow *flow,
197 struct mlx5_flow_attr *attr)
198 {
199 }
200
201 static inline bool
mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv * ct_priv,struct sk_buff * skb,u8 zone_restore_id)202 mlx5e_tc_ct_restore_flow(struct mlx5_tc_ct_priv *ct_priv,
203 struct sk_buff *skb, u8 zone_restore_id)
204 {
205 if (!zone_restore_id)
206 return true;
207
208 return false;
209 }
210
211 #endif /* !IS_ENABLED(CONFIG_MLX5_TC_CT) */
212 #endif /* __MLX5_EN_TC_CT_H__ */
213