1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2018 Mellanox Technologies. */
3
4 #ifndef __MLX5E_FLOW_STEER_H__
5 #define __MLX5E_FLOW_STEER_H__
6
7 #include "mod_hdr.h"
8
9 enum {
10 MLX5E_TC_FT_LEVEL = 0,
11 MLX5E_TC_TTC_FT_LEVEL,
12 };
13
14 struct mlx5e_tc_table {
15 /* Protects the dynamic assignment of the t parameter
16 * which is the nic tc root table.
17 */
18 struct mutex t_lock;
19 struct mlx5_flow_table *t;
20 struct mlx5_fs_chains *chains;
21
22 struct rhashtable ht;
23
24 struct mod_hdr_tbl mod_hdr;
25 struct mutex hairpin_tbl_lock; /* protects hairpin_tbl */
26 DECLARE_HASHTABLE(hairpin_tbl, 8);
27
28 struct notifier_block netdevice_nb;
29 struct netdev_net_notifier netdevice_nn;
30
31 struct mlx5_tc_ct_priv *ct;
32 };
33
34 struct mlx5e_flow_table {
35 int num_groups;
36 struct mlx5_flow_table *t;
37 struct mlx5_flow_group **g;
38 };
39
40 struct mlx5e_l2_rule {
41 u8 addr[ETH_ALEN + 2];
42 struct mlx5_flow_handle *rule;
43 };
44
45 #define MLX5E_L2_ADDR_HASH_SIZE BIT(BITS_PER_BYTE)
46
47 struct mlx5e_vlan_table {
48 struct mlx5e_flow_table ft;
49 DECLARE_BITMAP(active_cvlans, VLAN_N_VID);
50 DECLARE_BITMAP(active_svlans, VLAN_N_VID);
51 struct mlx5_flow_handle *active_cvlans_rule[VLAN_N_VID];
52 struct mlx5_flow_handle *active_svlans_rule[VLAN_N_VID];
53 struct mlx5_flow_handle *untagged_rule;
54 struct mlx5_flow_handle *any_cvlan_rule;
55 struct mlx5_flow_handle *any_svlan_rule;
56 bool cvlan_filter_disabled;
57 };
58
59 struct mlx5e_l2_table {
60 struct mlx5e_flow_table ft;
61 struct hlist_head netdev_uc[MLX5E_L2_ADDR_HASH_SIZE];
62 struct hlist_head netdev_mc[MLX5E_L2_ADDR_HASH_SIZE];
63 struct mlx5e_l2_rule broadcast;
64 struct mlx5e_l2_rule allmulti;
65 struct mlx5e_l2_rule promisc;
66 bool broadcast_enabled;
67 bool allmulti_enabled;
68 bool promisc_enabled;
69 };
70
71 enum mlx5e_traffic_types {
72 MLX5E_TT_IPV4_TCP,
73 MLX5E_TT_IPV6_TCP,
74 MLX5E_TT_IPV4_UDP,
75 MLX5E_TT_IPV6_UDP,
76 MLX5E_TT_IPV4_IPSEC_AH,
77 MLX5E_TT_IPV6_IPSEC_AH,
78 MLX5E_TT_IPV4_IPSEC_ESP,
79 MLX5E_TT_IPV6_IPSEC_ESP,
80 MLX5E_TT_IPV4,
81 MLX5E_TT_IPV6,
82 MLX5E_TT_ANY,
83 MLX5E_NUM_TT,
84 MLX5E_NUM_INDIR_TIRS = MLX5E_TT_ANY,
85 };
86
87 struct mlx5e_tirc_config {
88 u8 l3_prot_type;
89 u8 l4_prot_type;
90 u32 rx_hash_fields;
91 };
92
93 #define MLX5_HASH_IP (MLX5_HASH_FIELD_SEL_SRC_IP |\
94 MLX5_HASH_FIELD_SEL_DST_IP)
95 #define MLX5_HASH_IP_L4PORTS (MLX5_HASH_FIELD_SEL_SRC_IP |\
96 MLX5_HASH_FIELD_SEL_DST_IP |\
97 MLX5_HASH_FIELD_SEL_L4_SPORT |\
98 MLX5_HASH_FIELD_SEL_L4_DPORT)
99 #define MLX5_HASH_IP_IPSEC_SPI (MLX5_HASH_FIELD_SEL_SRC_IP |\
100 MLX5_HASH_FIELD_SEL_DST_IP |\
101 MLX5_HASH_FIELD_SEL_IPSEC_SPI)
102
103 enum mlx5e_tunnel_types {
104 MLX5E_TT_IPV4_GRE,
105 MLX5E_TT_IPV6_GRE,
106 MLX5E_TT_IPV4_IPIP,
107 MLX5E_TT_IPV6_IPIP,
108 MLX5E_TT_IPV4_IPV6,
109 MLX5E_TT_IPV6_IPV6,
110 MLX5E_NUM_TUNNEL_TT,
111 };
112
113 bool mlx5e_tunnel_inner_ft_supported(struct mlx5_core_dev *mdev);
114
115 struct mlx5e_ttc_rule {
116 struct mlx5_flow_handle *rule;
117 struct mlx5_flow_destination default_dest;
118 };
119
120 /* L3/L4 traffic type classifier */
121 struct mlx5e_ttc_table {
122 struct mlx5e_flow_table ft;
123 struct mlx5e_ttc_rule rules[MLX5E_NUM_TT];
124 struct mlx5_flow_handle *tunnel_rules[MLX5E_NUM_TUNNEL_TT];
125 };
126
127 /* NIC prio FTS */
128 enum {
129 MLX5E_VLAN_FT_LEVEL = 0,
130 MLX5E_L2_FT_LEVEL,
131 MLX5E_TTC_FT_LEVEL,
132 MLX5E_INNER_TTC_FT_LEVEL,
133 #ifdef CONFIG_MLX5_EN_TLS
134 MLX5E_ACCEL_FS_TCP_FT_LEVEL,
135 #endif
136 #ifdef CONFIG_MLX5_EN_ARFS
137 MLX5E_ARFS_FT_LEVEL,
138 #endif
139 #ifdef CONFIG_MLX5_EN_IPSEC
140 MLX5E_ACCEL_FS_ESP_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
141 MLX5E_ACCEL_FS_ESP_FT_ERR_LEVEL,
142 #endif
143 };
144
145 #define MLX5E_TTC_NUM_GROUPS 3
146 #define MLX5E_TTC_GROUP1_SIZE (BIT(3) + MLX5E_NUM_TUNNEL_TT)
147 #define MLX5E_TTC_GROUP2_SIZE BIT(1)
148 #define MLX5E_TTC_GROUP3_SIZE BIT(0)
149 #define MLX5E_TTC_TABLE_SIZE (MLX5E_TTC_GROUP1_SIZE +\
150 MLX5E_TTC_GROUP2_SIZE +\
151 MLX5E_TTC_GROUP3_SIZE)
152
153 #define MLX5E_INNER_TTC_NUM_GROUPS 3
154 #define MLX5E_INNER_TTC_GROUP1_SIZE BIT(3)
155 #define MLX5E_INNER_TTC_GROUP2_SIZE BIT(1)
156 #define MLX5E_INNER_TTC_GROUP3_SIZE BIT(0)
157 #define MLX5E_INNER_TTC_TABLE_SIZE (MLX5E_INNER_TTC_GROUP1_SIZE +\
158 MLX5E_INNER_TTC_GROUP2_SIZE +\
159 MLX5E_INNER_TTC_GROUP3_SIZE)
160
161 #ifdef CONFIG_MLX5_EN_RXNFC
162
163 struct mlx5e_ethtool_table {
164 struct mlx5_flow_table *ft;
165 int num_rules;
166 };
167
168 #define ETHTOOL_NUM_L3_L4_FTS 7
169 #define ETHTOOL_NUM_L2_FTS 4
170
171 struct mlx5e_ethtool_steering {
172 struct mlx5e_ethtool_table l3_l4_ft[ETHTOOL_NUM_L3_L4_FTS];
173 struct mlx5e_ethtool_table l2_ft[ETHTOOL_NUM_L2_FTS];
174 struct list_head rules;
175 int tot_num_rules;
176 };
177
178 void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv);
179 void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv);
180 int mlx5e_ethtool_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd);
181 int mlx5e_ethtool_get_rxnfc(struct net_device *dev,
182 struct ethtool_rxnfc *info, u32 *rule_locs);
183 #else
mlx5e_ethtool_init_steering(struct mlx5e_priv * priv)184 static inline void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv) { }
mlx5e_ethtool_cleanup_steering(struct mlx5e_priv * priv)185 static inline void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv) { }
mlx5e_ethtool_set_rxnfc(struct net_device * dev,struct ethtool_rxnfc * cmd)186 static inline int mlx5e_ethtool_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd)
187 { return -EOPNOTSUPP; }
mlx5e_ethtool_get_rxnfc(struct net_device * dev,struct ethtool_rxnfc * info,u32 * rule_locs)188 static inline int mlx5e_ethtool_get_rxnfc(struct net_device *dev,
189 struct ethtool_rxnfc *info, u32 *rule_locs)
190 { return -EOPNOTSUPP; }
191 #endif /* CONFIG_MLX5_EN_RXNFC */
192
193 #ifdef CONFIG_MLX5_EN_ARFS
194 #define ARFS_HASH_SHIFT BITS_PER_BYTE
195 #define ARFS_HASH_SIZE BIT(BITS_PER_BYTE)
196
197 struct arfs_table {
198 struct mlx5e_flow_table ft;
199 struct mlx5_flow_handle *default_rule;
200 struct hlist_head rules_hash[ARFS_HASH_SIZE];
201 };
202
203 enum arfs_type {
204 ARFS_IPV4_TCP,
205 ARFS_IPV6_TCP,
206 ARFS_IPV4_UDP,
207 ARFS_IPV6_UDP,
208 ARFS_NUM_TYPES,
209 };
210
211 struct mlx5e_arfs_tables {
212 struct arfs_table arfs_tables[ARFS_NUM_TYPES];
213 /* Protect aRFS rules list */
214 spinlock_t arfs_lock;
215 struct list_head rules;
216 int last_filter_id;
217 struct workqueue_struct *wq;
218 };
219
220 int mlx5e_arfs_create_tables(struct mlx5e_priv *priv);
221 void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv);
222 int mlx5e_arfs_enable(struct mlx5e_priv *priv);
223 int mlx5e_arfs_disable(struct mlx5e_priv *priv);
224 int mlx5e_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
225 u16 rxq_index, u32 flow_id);
226 #else
mlx5e_arfs_create_tables(struct mlx5e_priv * priv)227 static inline int mlx5e_arfs_create_tables(struct mlx5e_priv *priv) { return 0; }
mlx5e_arfs_destroy_tables(struct mlx5e_priv * priv)228 static inline void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv) {}
mlx5e_arfs_enable(struct mlx5e_priv * priv)229 static inline int mlx5e_arfs_enable(struct mlx5e_priv *priv) { return -EOPNOTSUPP; }
mlx5e_arfs_disable(struct mlx5e_priv * priv)230 static inline int mlx5e_arfs_disable(struct mlx5e_priv *priv) { return -EOPNOTSUPP; }
231 #endif
232
233 #ifdef CONFIG_MLX5_EN_TLS
234 struct mlx5e_accel_fs_tcp;
235 #endif
236
237 struct mlx5e_flow_steering {
238 struct mlx5_flow_namespace *ns;
239 struct mlx5_flow_namespace *egress_ns;
240 #ifdef CONFIG_MLX5_EN_RXNFC
241 struct mlx5e_ethtool_steering ethtool;
242 #endif
243 struct mlx5e_tc_table tc;
244 struct mlx5e_vlan_table vlan;
245 struct mlx5e_l2_table l2;
246 struct mlx5e_ttc_table ttc;
247 struct mlx5e_ttc_table inner_ttc;
248 #ifdef CONFIG_MLX5_EN_ARFS
249 struct mlx5e_arfs_tables arfs;
250 #endif
251 #ifdef CONFIG_MLX5_EN_TLS
252 struct mlx5e_accel_fs_tcp *accel_tcp;
253 #endif
254 };
255
256 struct ttc_params {
257 struct mlx5_flow_table_attr ft_attr;
258 u32 any_tt_tirn;
259 u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
260 struct mlx5e_ttc_table *inner_ttc;
261 };
262
263 void mlx5e_set_ttc_basic_params(struct mlx5e_priv *priv, struct ttc_params *ttc_params);
264 void mlx5e_set_ttc_ft_params(struct ttc_params *ttc_params);
265
266 int mlx5e_create_ttc_table(struct mlx5e_priv *priv, struct ttc_params *params,
267 struct mlx5e_ttc_table *ttc);
268 void mlx5e_destroy_ttc_table(struct mlx5e_priv *priv,
269 struct mlx5e_ttc_table *ttc);
270
271 void mlx5e_destroy_flow_table(struct mlx5e_flow_table *ft);
272 int mlx5e_ttc_fwd_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type,
273 struct mlx5_flow_destination *new_dest);
274 struct mlx5_flow_destination
275 mlx5e_ttc_get_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type);
276 int mlx5e_ttc_fwd_default_dest(struct mlx5e_priv *priv, enum mlx5e_traffic_types type);
277
278 void mlx5e_enable_cvlan_filter(struct mlx5e_priv *priv);
279 void mlx5e_disable_cvlan_filter(struct mlx5e_priv *priv);
280
281 int mlx5e_create_flow_steering(struct mlx5e_priv *priv);
282 void mlx5e_destroy_flow_steering(struct mlx5e_priv *priv);
283
284 bool mlx5e_tunnel_proto_supported(struct mlx5_core_dev *mdev, u8 proto_type);
285 bool mlx5e_any_tunnel_proto_supported(struct mlx5_core_dev *mdev);
286
287 #endif /* __MLX5E_FLOW_STEER_H__ */
288
289