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 #include "lib/fs_ttc.h"
9 
10 struct mlx5e_post_act;
11 
12 enum {
13 	MLX5E_TC_FT_LEVEL = 0,
14 	MLX5E_TC_TTC_FT_LEVEL,
15 	MLX5E_TC_MISS_LEVEL,
16 };
17 
18 struct mlx5e_tc_table {
19 	/* Protects the dynamic assignment of the t parameter
20 	 * which is the nic tc root table.
21 	 */
22 	struct mutex			t_lock;
23 	struct mlx5_flow_table		*t;
24 	struct mlx5_flow_table		*miss_t;
25 	struct mlx5_fs_chains           *chains;
26 	struct mlx5e_post_act		*post_act;
27 
28 	struct rhashtable               ht;
29 
30 	struct mod_hdr_tbl mod_hdr;
31 	struct mutex hairpin_tbl_lock; /* protects hairpin_tbl */
32 	DECLARE_HASHTABLE(hairpin_tbl, 8);
33 
34 	struct notifier_block     netdevice_nb;
35 	struct netdev_net_notifier	netdevice_nn;
36 
37 	struct mlx5_tc_ct_priv         *ct;
38 	struct mapping_ctx             *mapping;
39 };
40 
41 struct mlx5e_flow_table {
42 	int num_groups;
43 	struct mlx5_flow_table *t;
44 	struct mlx5_flow_group **g;
45 };
46 
47 struct mlx5e_l2_rule {
48 	u8  addr[ETH_ALEN + 2];
49 	struct mlx5_flow_handle *rule;
50 };
51 
52 #define MLX5E_L2_ADDR_HASH_SIZE BIT(BITS_PER_BYTE)
53 
54 struct mlx5e_promisc_table {
55 	struct mlx5e_flow_table	ft;
56 	struct mlx5_flow_handle	*rule;
57 };
58 
59 /* Forward declaration and APIs to get private fields of vlan_table */
60 struct mlx5e_vlan_table;
61 unsigned long *mlx5e_vlan_get_active_svlans(struct mlx5e_vlan_table *vlan);
62 struct mlx5_flow_table *mlx5e_vlan_get_flowtable(struct mlx5e_vlan_table *vlan);
63 
64 struct mlx5e_l2_table {
65 	struct mlx5e_flow_table    ft;
66 	struct hlist_head          netdev_uc[MLX5E_L2_ADDR_HASH_SIZE];
67 	struct hlist_head          netdev_mc[MLX5E_L2_ADDR_HASH_SIZE];
68 	struct mlx5e_l2_rule	   broadcast;
69 	struct mlx5e_l2_rule	   allmulti;
70 	struct mlx5_flow_handle    *trap_rule;
71 	bool                       broadcast_enabled;
72 	bool                       allmulti_enabled;
73 	bool                       promisc_enabled;
74 };
75 
76 #define MLX5E_NUM_INDIR_TIRS (MLX5_NUM_TT - 1)
77 
78 #define MLX5_HASH_IP		(MLX5_HASH_FIELD_SEL_SRC_IP   |\
79 				 MLX5_HASH_FIELD_SEL_DST_IP)
80 #define MLX5_HASH_IP_L4PORTS	(MLX5_HASH_FIELD_SEL_SRC_IP   |\
81 				 MLX5_HASH_FIELD_SEL_DST_IP   |\
82 				 MLX5_HASH_FIELD_SEL_L4_SPORT |\
83 				 MLX5_HASH_FIELD_SEL_L4_DPORT)
84 #define MLX5_HASH_IP_IPSEC_SPI	(MLX5_HASH_FIELD_SEL_SRC_IP   |\
85 				 MLX5_HASH_FIELD_SEL_DST_IP   |\
86 				 MLX5_HASH_FIELD_SEL_IPSEC_SPI)
87 
88 /* NIC prio FTS */
89 enum {
90 	MLX5E_PROMISC_FT_LEVEL,
91 	MLX5E_VLAN_FT_LEVEL,
92 	MLX5E_L2_FT_LEVEL,
93 	MLX5E_TTC_FT_LEVEL,
94 	MLX5E_INNER_TTC_FT_LEVEL,
95 	MLX5E_FS_TT_UDP_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
96 	MLX5E_FS_TT_ANY_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
97 #ifdef CONFIG_MLX5_EN_TLS
98 	MLX5E_ACCEL_FS_TCP_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
99 #endif
100 #ifdef CONFIG_MLX5_EN_ARFS
101 	MLX5E_ARFS_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
102 #endif
103 #ifdef CONFIG_MLX5_EN_IPSEC
104 	MLX5E_ACCEL_FS_ESP_FT_LEVEL = MLX5E_INNER_TTC_FT_LEVEL + 1,
105 	MLX5E_ACCEL_FS_ESP_FT_ERR_LEVEL,
106 #endif
107 };
108 
109 struct mlx5e_priv;
110 
111 #ifdef CONFIG_MLX5_EN_RXNFC
112 
113 struct mlx5e_ethtool_table {
114 	struct mlx5_flow_table *ft;
115 	int                    num_rules;
116 };
117 
118 #define ETHTOOL_NUM_L3_L4_FTS 7
119 #define ETHTOOL_NUM_L2_FTS 4
120 
121 struct mlx5e_ethtool_steering {
122 	struct mlx5e_ethtool_table      l3_l4_ft[ETHTOOL_NUM_L3_L4_FTS];
123 	struct mlx5e_ethtool_table      l2_ft[ETHTOOL_NUM_L2_FTS];
124 	struct list_head                rules;
125 	int                             tot_num_rules;
126 };
127 
128 void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv);
129 void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv);
130 int mlx5e_ethtool_set_rxnfc(struct mlx5e_priv *priv, struct ethtool_rxnfc *cmd);
131 int mlx5e_ethtool_get_rxnfc(struct mlx5e_priv *priv,
132 			    struct ethtool_rxnfc *info, u32 *rule_locs);
133 #else
mlx5e_ethtool_init_steering(struct mlx5e_priv * priv)134 static inline void mlx5e_ethtool_init_steering(struct mlx5e_priv *priv)    { }
mlx5e_ethtool_cleanup_steering(struct mlx5e_priv * priv)135 static inline void mlx5e_ethtool_cleanup_steering(struct mlx5e_priv *priv) { }
mlx5e_ethtool_set_rxnfc(struct mlx5e_priv * priv,struct ethtool_rxnfc * cmd)136 static inline int mlx5e_ethtool_set_rxnfc(struct mlx5e_priv *priv, struct ethtool_rxnfc *cmd)
137 { return -EOPNOTSUPP; }
mlx5e_ethtool_get_rxnfc(struct mlx5e_priv * priv,struct ethtool_rxnfc * info,u32 * rule_locs)138 static inline int mlx5e_ethtool_get_rxnfc(struct mlx5e_priv *priv,
139 					  struct ethtool_rxnfc *info, u32 *rule_locs)
140 { return -EOPNOTSUPP; }
141 #endif /* CONFIG_MLX5_EN_RXNFC */
142 
143 #ifdef CONFIG_MLX5_EN_ARFS
144 struct mlx5e_arfs_tables;
145 
146 int mlx5e_arfs_create_tables(struct mlx5e_priv *priv);
147 void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv);
148 int mlx5e_arfs_enable(struct mlx5e_priv *priv);
149 int mlx5e_arfs_disable(struct mlx5e_priv *priv);
150 int mlx5e_rx_flow_steer(struct net_device *dev, const struct sk_buff *skb,
151 			u16 rxq_index, u32 flow_id);
152 #else
mlx5e_arfs_create_tables(struct mlx5e_priv * priv)153 static inline int mlx5e_arfs_create_tables(struct mlx5e_priv *priv) { return 0; }
mlx5e_arfs_destroy_tables(struct mlx5e_priv * priv)154 static inline void mlx5e_arfs_destroy_tables(struct mlx5e_priv *priv) {}
mlx5e_arfs_enable(struct mlx5e_priv * priv)155 static inline int mlx5e_arfs_enable(struct mlx5e_priv *priv) { return -EOPNOTSUPP; }
mlx5e_arfs_disable(struct mlx5e_priv * priv)156 static inline int mlx5e_arfs_disable(struct mlx5e_priv *priv) {	return -EOPNOTSUPP; }
157 #endif
158 
159 #ifdef CONFIG_MLX5_EN_TLS
160 struct mlx5e_accel_fs_tcp;
161 #endif
162 
163 struct mlx5e_fs_udp;
164 struct mlx5e_fs_any;
165 struct mlx5e_ptp_fs;
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_promisc_table      promisc;
174 	struct mlx5e_vlan_table         *vlan;
175 	struct mlx5e_l2_table           l2;
176 	struct mlx5_ttc_table           *ttc;
177 	struct mlx5_ttc_table           *inner_ttc;
178 #ifdef CONFIG_MLX5_EN_ARFS
179 	struct mlx5e_arfs_tables       *arfs;
180 #endif
181 #ifdef CONFIG_MLX5_EN_TLS
182 	struct mlx5e_accel_fs_tcp      *accel_tcp;
183 #endif
184 	struct mlx5e_fs_udp            *udp;
185 	struct mlx5e_fs_any            *any;
186 	struct mlx5e_ptp_fs            *ptp_fs;
187 };
188 
189 void mlx5e_set_ttc_params(struct mlx5e_priv *priv,
190 			  struct ttc_params *ttc_params, bool tunnel);
191 
192 void mlx5e_destroy_ttc_table(struct mlx5e_priv *priv);
193 int mlx5e_create_ttc_table(struct mlx5e_priv *priv);
194 
195 void mlx5e_destroy_flow_table(struct mlx5e_flow_table *ft);
196 
197 void mlx5e_enable_cvlan_filter(struct mlx5e_priv *priv);
198 void mlx5e_disable_cvlan_filter(struct mlx5e_priv *priv);
199 
200 int mlx5e_create_flow_steering(struct mlx5e_priv *priv);
201 void mlx5e_destroy_flow_steering(struct mlx5e_priv *priv);
202 
203 int mlx5e_fs_init(struct mlx5e_priv *priv);
204 void mlx5e_fs_cleanup(struct mlx5e_priv *priv);
205 
206 int mlx5e_add_vlan_trap(struct mlx5e_priv *priv, int  trap_id, int tir_num);
207 void mlx5e_remove_vlan_trap(struct mlx5e_priv *priv);
208 int mlx5e_add_mac_trap(struct mlx5e_priv *priv, int  trap_id, int tir_num);
209 void mlx5e_remove_mac_trap(struct mlx5e_priv *priv);
210 
211 #endif /* __MLX5E_FLOW_STEER_H__ */
212 
213