1 /* SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB */
2 /* Copyright (c) 2019, Mellanox Technologies */
3 
4 #ifndef _MLX5DR_H_
5 #define _MLX5DR_H_
6 
7 struct mlx5dr_domain;
8 struct mlx5dr_table;
9 struct mlx5dr_matcher;
10 struct mlx5dr_rule;
11 struct mlx5dr_action;
12 
13 enum mlx5dr_domain_type {
14 	MLX5DR_DOMAIN_TYPE_NIC_RX,
15 	MLX5DR_DOMAIN_TYPE_NIC_TX,
16 	MLX5DR_DOMAIN_TYPE_FDB,
17 };
18 
19 enum mlx5dr_domain_sync_flags {
20 	MLX5DR_DOMAIN_SYNC_FLAGS_SW = 1 << 0,
21 	MLX5DR_DOMAIN_SYNC_FLAGS_HW = 1 << 1,
22 };
23 
24 enum mlx5dr_action_reformat_type {
25 	DR_ACTION_REFORMAT_TYP_TNL_L2_TO_L2,
26 	DR_ACTION_REFORMAT_TYP_L2_TO_TNL_L2,
27 	DR_ACTION_REFORMAT_TYP_TNL_L3_TO_L2,
28 	DR_ACTION_REFORMAT_TYP_L2_TO_TNL_L3,
29 	DR_ACTION_REFORMAT_TYP_INSERT_HDR,
30 	DR_ACTION_REFORMAT_TYP_REMOVE_HDR,
31 };
32 
33 struct mlx5dr_match_parameters {
34 	size_t match_sz;
35 	u64 *match_buf; /* Device spec format */
36 };
37 
38 struct mlx5dr_action_dest {
39 	struct mlx5dr_action *dest;
40 	struct mlx5dr_action *reformat;
41 };
42 
43 struct mlx5dr_domain *
44 mlx5dr_domain_create(struct mlx5_core_dev *mdev, enum mlx5dr_domain_type type);
45 
46 int mlx5dr_domain_destroy(struct mlx5dr_domain *domain);
47 
48 int mlx5dr_domain_sync(struct mlx5dr_domain *domain, u32 flags);
49 
50 void mlx5dr_domain_set_peer(struct mlx5dr_domain *dmn,
51 			    struct mlx5dr_domain *peer_dmn);
52 
53 struct mlx5dr_table *
54 mlx5dr_table_create(struct mlx5dr_domain *domain, u32 level, u32 flags);
55 
56 struct mlx5dr_table *
57 mlx5dr_table_get_from_fs_ft(struct mlx5_flow_table *ft);
58 
59 int mlx5dr_table_destroy(struct mlx5dr_table *table);
60 
61 u32 mlx5dr_table_get_id(struct mlx5dr_table *table);
62 
63 struct mlx5dr_matcher *
64 mlx5dr_matcher_create(struct mlx5dr_table *table,
65 		      u32 priority,
66 		      u8 match_criteria_enable,
67 		      struct mlx5dr_match_parameters *mask);
68 
69 int mlx5dr_matcher_destroy(struct mlx5dr_matcher *matcher);
70 
71 struct mlx5dr_rule *
72 mlx5dr_rule_create(struct mlx5dr_matcher *matcher,
73 		   struct mlx5dr_match_parameters *value,
74 		   size_t num_actions,
75 		   struct mlx5dr_action *actions[],
76 		   u32 flow_source);
77 
78 int mlx5dr_rule_destroy(struct mlx5dr_rule *rule);
79 
80 int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
81 				 struct mlx5dr_action *action);
82 
83 struct mlx5dr_action *
84 mlx5dr_action_create_dest_table_num(struct mlx5dr_domain *dmn, u32 table_num);
85 
86 struct mlx5dr_action *
87 mlx5dr_action_create_dest_table(struct mlx5dr_table *table);
88 
89 struct mlx5dr_action *
90 mlx5dr_action_create_dest_flow_fw_table(struct mlx5dr_domain *domain,
91 					struct mlx5_flow_table *ft);
92 
93 struct mlx5dr_action *
94 mlx5dr_action_create_dest_vport(struct mlx5dr_domain *domain,
95 				u16 vport, u8 vhca_id_valid,
96 				u16 vhca_id);
97 
98 struct mlx5dr_action *
99 mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
100 				   struct mlx5dr_action_dest *dests,
101 				   u32 num_of_dests,
102 				   bool ignore_flow_level,
103 				   u32 flow_source);
104 
105 struct mlx5dr_action *mlx5dr_action_create_drop(void);
106 
107 struct mlx5dr_action *mlx5dr_action_create_tag(u32 tag_value);
108 
109 struct mlx5dr_action *
110 mlx5dr_action_create_flow_sampler(struct mlx5dr_domain *dmn, u32 sampler_id);
111 
112 struct mlx5dr_action *
113 mlx5dr_action_create_flow_counter(u32 counter_id);
114 
115 struct mlx5dr_action *
116 mlx5dr_action_create_packet_reformat(struct mlx5dr_domain *dmn,
117 				     enum mlx5dr_action_reformat_type reformat_type,
118 				     u8 reformat_param_0,
119 				     u8 reformat_param_1,
120 				     size_t data_sz,
121 				     void *data);
122 
123 struct mlx5dr_action *
124 mlx5dr_action_create_modify_header(struct mlx5dr_domain *domain,
125 				   u32 flags,
126 				   size_t actions_sz,
127 				   __be64 actions[]);
128 
129 struct mlx5dr_action *mlx5dr_action_create_pop_vlan(void);
130 
131 struct mlx5dr_action *
132 mlx5dr_action_create_push_vlan(struct mlx5dr_domain *domain, __be32 vlan_hdr);
133 
134 int mlx5dr_action_destroy(struct mlx5dr_action *action);
135 
136 static inline bool
mlx5dr_is_supported(struct mlx5_core_dev * dev)137 mlx5dr_is_supported(struct mlx5_core_dev *dev)
138 {
139 	return MLX5_CAP_GEN(dev, roce) &&
140 	       (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner) ||
141 		(MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner_v2) &&
142 		 (MLX5_CAP_GEN(dev, steering_format_version) <=
143 		  MLX5_STEERING_FORMAT_CONNECTX_7)));
144 }
145 
146 /* buddy functions & structure */
147 
148 struct mlx5dr_icm_mr;
149 
150 struct mlx5dr_icm_buddy_mem {
151 	unsigned long		**bitmap;
152 	unsigned int		*num_free;
153 	u32			max_order;
154 	struct list_head	list_node;
155 	struct mlx5dr_icm_mr	*icm_mr;
156 	struct mlx5dr_icm_pool	*pool;
157 
158 	/* This is the list of used chunks. HW may be accessing this memory */
159 	struct list_head	used_list;
160 	u64			used_memory;
161 
162 	/* Hardware may be accessing this memory but at some future,
163 	 * undetermined time, it might cease to do so.
164 	 * sync_ste command sets them free.
165 	 */
166 	struct list_head	hot_list;
167 
168 	/* Memory optimisation */
169 	struct mlx5dr_ste	*ste_arr;
170 	struct list_head	*miss_list;
171 	u8			*hw_ste_arr;
172 };
173 
174 int mlx5dr_buddy_init(struct mlx5dr_icm_buddy_mem *buddy,
175 		      unsigned int max_order);
176 void mlx5dr_buddy_cleanup(struct mlx5dr_icm_buddy_mem *buddy);
177 int mlx5dr_buddy_alloc_mem(struct mlx5dr_icm_buddy_mem *buddy,
178 			   unsigned int order,
179 			   unsigned int *segment);
180 void mlx5dr_buddy_free_mem(struct mlx5dr_icm_buddy_mem *buddy,
181 			   unsigned int seg, unsigned int order);
182 
183 #endif /* _MLX5DR_H_ */
184