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 enum {
8 	MLX5E_TC_FT_LEVEL = 0,
9 	MLX5E_TC_TTC_FT_LEVEL,
10 };
11 
12 struct mlx5e_tc_table {
13 	struct mlx5_flow_table		*t;
14 
15 	struct rhashtable               ht;
16 
17 	DECLARE_HASHTABLE(mod_hdr_tbl, 8);
18 	DECLARE_HASHTABLE(hairpin_tbl, 8);
19 
20 	struct notifier_block     netdevice_nb;
21 };
22 
23 struct mlx5e_flow_table {
24 	int num_groups;
25 	struct mlx5_flow_table *t;
26 	struct mlx5_flow_group **g;
27 };
28 
29 struct mlx5e_l2_rule {
30 	u8  addr[ETH_ALEN + 2];
31 	struct mlx5_flow_handle *rule;
32 };
33 
34 #define MLX5E_L2_ADDR_HASH_SIZE BIT(BITS_PER_BYTE)
35 
36 struct mlx5e_vlan_table {
37 	struct mlx5e_flow_table		ft;
38 	DECLARE_BITMAP(active_cvlans, VLAN_N_VID);
39 	DECLARE_BITMAP(active_svlans, VLAN_N_VID);
40 	struct mlx5_flow_handle	*active_cvlans_rule[VLAN_N_VID];
41 	struct mlx5_flow_handle	*active_svlans_rule[VLAN_N_VID];
42 	struct mlx5_flow_handle	*untagged_rule;
43 	struct mlx5_flow_handle	*any_cvlan_rule;
44 	struct mlx5_flow_handle	*any_svlan_rule;
45 	bool			cvlan_filter_disabled;
46 };
47 
48 struct mlx5e_l2_table {
49 	struct mlx5e_flow_table    ft;
50 	struct hlist_head          netdev_uc[MLX5E_L2_ADDR_HASH_SIZE];
51 	struct hlist_head          netdev_mc[MLX5E_L2_ADDR_HASH_SIZE];
52 	struct mlx5e_l2_rule	   broadcast;
53 	struct mlx5e_l2_rule	   allmulti;
54 	struct mlx5e_l2_rule	   promisc;
55 	bool                       broadcast_enabled;
56 	bool                       allmulti_enabled;
57 	bool                       promisc_enabled;
58 };
59 
60 enum mlx5e_traffic_types {
61 	MLX5E_TT_IPV4_TCP,
62 	MLX5E_TT_IPV6_TCP,
63 	MLX5E_TT_IPV4_UDP,
64 	MLX5E_TT_IPV6_UDP,
65 	MLX5E_TT_IPV4_IPSEC_AH,
66 	MLX5E_TT_IPV6_IPSEC_AH,
67 	MLX5E_TT_IPV4_IPSEC_ESP,
68 	MLX5E_TT_IPV6_IPSEC_ESP,
69 	MLX5E_TT_IPV4,
70 	MLX5E_TT_IPV6,
71 	MLX5E_TT_ANY,
72 	MLX5E_NUM_TT,
73 	MLX5E_NUM_INDIR_TIRS = MLX5E_TT_ANY,
74 };
75 
76 enum mlx5e_tunnel_types {
77 	MLX5E_TT_IPV4_GRE,
78 	MLX5E_TT_IPV6_GRE,
79 	MLX5E_NUM_TUNNEL_TT,
80 };
81 
82 /* L3/L4 traffic type classifier */
83 struct mlx5e_ttc_table {
84 	struct mlx5e_flow_table  ft;
85 	struct mlx5_flow_handle	 *rules[MLX5E_NUM_TT];
86 	struct mlx5_flow_handle  *tunnel_rules[MLX5E_NUM_TUNNEL_TT];
87 };
88 
89 /* NIC prio FTS */
90 enum {
91 	MLX5E_VLAN_FT_LEVEL = 0,
92 	MLX5E_L2_FT_LEVEL,
93 	MLX5E_TTC_FT_LEVEL,
94 	MLX5E_INNER_TTC_FT_LEVEL,
95 #ifdef CONFIG_MLX5_EN_ARFS
96 	MLX5E_ARFS_FT_LEVEL
97 #endif
98 };
99 
100 #ifdef CONFIG_MLX5_EN_RXNFC
101 
102 struct mlx5e_ethtool_table {
103 	struct mlx5_flow_table *ft;
104 	int                    num_rules;
105 };
106 
107 #define ETHTOOL_NUM_L3_L4_FTS 7
108 #define ETHTOOL_NUM_L2_FTS 4
109 
110 struct mlx5e_ethtool_steering {
111 	struct mlx5e_ethtool_table      l3_l4_ft[ETHTOOL_NUM_L3_L4_FTS];
112 	struct mlx5e_ethtool_table      l2_ft[ETHTOOL_NUM_L2_FTS];
113 	struct list_head                rules;
114 	int                             tot_num_rules;
115 };
116 
117 void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv);
118 void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv);
119 int mlx5e_set_rxnfc(struct net_device *dev, struct ethtool_rxnfc *cmd);
120 int mlx5e_get_rxnfc(struct net_device *dev,
121 		    struct ethtool_rxnfc *info, u32 *rule_locs);
122 #else
mlx5e_ethtool_init_steering(struct mlx5e_priv * priv)123 static inline void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv)    { }
mlx5e_ethtool_cleanup_steering(struct mlx5e_priv * priv)124 static inline void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv) { }
125 #endif /* CONFIG_MLX5_EN_RXNFC */
126 
127 #ifdef CONFIG_MLX5_EN_ARFS
128 #define ARFS_HASH_SHIFT BITS_PER_BYTE
129 #define ARFS_HASH_SIZE BIT(BITS_PER_BYTE)
130 
131 struct arfs_table {
132 	struct mlx5e_flow_table  ft;
133 	struct mlx5_flow_handle	 *default_rule;
134 	struct hlist_head	 rules_hash[ARFS_HASH_SIZE];
135 };
136 
137 enum  arfs_type {
138 	ARFS_IPV4_TCP,
139 	ARFS_IPV6_TCP,
140 	ARFS_IPV4_UDP,
141 	ARFS_IPV6_UDP,
142 	ARFS_NUM_TYPES,
143 };
144 
145 struct mlx5e_arfs_tables {
146 	struct arfs_table arfs_tables[ARFS_NUM_TYPES];
147 	/* Protect aRFS rules list */
148 	spinlock_t                     arfs_lock;
149 	struct list_head               rules;
150 	int                            last_filter_id;
151 	struct workqueue_struct        *wq;
152 };
153 
154 int mlx5e_arfs_create_tables(struct mlx5e_priv *priv);
155 void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv);
156 int mlx5e_arfs_enable(struct mlx5e_priv *priv);
157 int mlx5e_arfs_disable(struct mlx5e_priv *priv);
158 int mlx5e_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
159 			u16 rxq_index, u32 flow_id);
160 #else
mlx5e_arfs_create_tables(struct mlx5e_priv * priv)161 static inline int mlx5e_arfs_create_tables(struct mlx5e_priv *priv) { return 0; }
mlx5e_arfs_destroy_tables(struct mlx5e_priv * priv)162 static inline void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv) {}
mlx5e_arfs_enable(struct mlx5e_priv * priv)163 static inline int mlx5e_arfs_enable(struct mlx5e_priv *priv) { return -EOPNOTSUPP; }
mlx5e_arfs_disable(struct mlx5e_priv * priv)164 static inline int mlx5e_arfs_disable(struct mlx5e_priv *priv) {	return -EOPNOTSUPP; }
165 #endif
166 
167 struct mlx5e_flow_steering {
168 	struct mlx5_flow_namespace      *ns;
169 #ifdef CONFIG_MLX5_EN_RXNFC
170 	struct mlx5e_ethtool_steering   ethtool;
171 #endif
172 	struct mlx5e_tc_table           tc;
173 	struct mlx5e_vlan_table         vlan;
174 	struct mlx5e_l2_table           l2;
175 	struct mlx5e_ttc_table          ttc;
176 	struct mlx5e_ttc_table          inner_ttc;
177 #ifdef CONFIG_MLX5_EN_ARFS
178 	struct mlx5e_arfs_tables        arfs;
179 #endif
180 };
181 
182 struct ttc_params {
183 	struct mlx5_flow_table_attr ft_attr;
184 	u32 any_tt_tirn;
185 	u32 indir_tirn[MLX5E_NUM_INDIR_TIRS];
186 	struct mlx5e_ttc_table *inner_ttc;
187 };
188 
189 void mlx5e_set_ttc_basic_params(struct mlx5e_priv *priv, struct ttc_params *ttc_params);
190 void mlx5e_set_ttc_ft_params(struct ttc_params *ttc_params);
191 void mlx5e_set_inner_ttc_ft_params(struct ttc_params *ttc_params);
192 
193 int mlx5e_create_ttc_table(struct mlx5e_priv *priv, struct ttc_params *params,
194 			   struct mlx5e_ttc_table *ttc);
195 void mlx5e_destroy_ttc_table(struct mlx5e_priv *priv,
196 			     struct mlx5e_ttc_table *ttc);
197 
198 int mlx5e_create_inner_ttc_table(struct mlx5e_priv *priv, struct ttc_params *params,
199 				 struct mlx5e_ttc_table *ttc);
200 void mlx5e_destroy_inner_ttc_table(struct mlx5e_priv *priv,
201 				   struct mlx5e_ttc_table *ttc);
202 
203 void mlx5e_destroy_flow_table(struct mlx5e_flow_table *ft);
204 
205 void mlx5e_enable_cvlan_filter(struct mlx5e_priv *priv);
206 void mlx5e_disable_cvlan_filter(struct mlx5e_priv *priv);
207 
208 int mlx5e_create_flow_steering(struct mlx5e_priv *priv);
209 void mlx5e_destroy_flow_steering(struct mlx5e_priv *priv);
210 
211 #endif /* __MLX5E_FLOW_STEER_H__ */
212 
213