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 int mlx5dr_table_destroy(struct mlx5dr_table *table);
57 
58 u32 mlx5dr_table_get_id(struct mlx5dr_table *table);
59 
60 struct mlx5dr_matcher *
61 mlx5dr_matcher_create(struct mlx5dr_table *table,
62 		      u32 priority,
63 		      u8 match_criteria_enable,
64 		      struct mlx5dr_match_parameters *mask);
65 
66 int mlx5dr_matcher_destroy(struct mlx5dr_matcher *matcher);
67 
68 struct mlx5dr_rule *
69 mlx5dr_rule_create(struct mlx5dr_matcher *matcher,
70 		   struct mlx5dr_match_parameters *value,
71 		   size_t num_actions,
72 		   struct mlx5dr_action *actions[],
73 		   u32 flow_source);
74 
75 int mlx5dr_rule_destroy(struct mlx5dr_rule *rule);
76 
77 int mlx5dr_table_set_miss_action(struct mlx5dr_table *tbl,
78 				 struct mlx5dr_action *action);
79 
80 struct mlx5dr_action *
81 mlx5dr_action_create_dest_table_num(struct mlx5dr_domain *dmn, u32 table_num);
82 
83 struct mlx5dr_action *
84 mlx5dr_action_create_dest_table(struct mlx5dr_table *table);
85 
86 struct mlx5dr_action *
87 mlx5dr_action_create_dest_flow_fw_table(struct mlx5dr_domain *domain,
88 					struct mlx5_flow_table *ft);
89 
90 struct mlx5dr_action *
91 mlx5dr_action_create_dest_vport(struct mlx5dr_domain *domain,
92 				u16 vport, u8 vhca_id_valid,
93 				u16 vhca_id);
94 
95 struct mlx5dr_action *
96 mlx5dr_action_create_mult_dest_tbl(struct mlx5dr_domain *dmn,
97 				   struct mlx5dr_action_dest *dests,
98 				   u32 num_of_dests,
99 				   bool ignore_flow_level);
100 
101 struct mlx5dr_action *mlx5dr_action_create_drop(void);
102 
103 struct mlx5dr_action *mlx5dr_action_create_tag(u32 tag_value);
104 
105 struct mlx5dr_action *
106 mlx5dr_action_create_flow_sampler(struct mlx5dr_domain *dmn, u32 sampler_id);
107 
108 struct mlx5dr_action *
109 mlx5dr_action_create_flow_counter(u32 counter_id);
110 
111 struct mlx5dr_action *
112 mlx5dr_action_create_packet_reformat(struct mlx5dr_domain *dmn,
113 				     enum mlx5dr_action_reformat_type reformat_type,
114 				     u8 reformat_param_0,
115 				     u8 reformat_param_1,
116 				     size_t data_sz,
117 				     void *data);
118 
119 struct mlx5dr_action *
120 mlx5dr_action_create_modify_header(struct mlx5dr_domain *domain,
121 				   u32 flags,
122 				   size_t actions_sz,
123 				   __be64 actions[]);
124 
125 struct mlx5dr_action *mlx5dr_action_create_pop_vlan(void);
126 
127 struct mlx5dr_action *
128 mlx5dr_action_create_push_vlan(struct mlx5dr_domain *domain, __be32 vlan_hdr);
129 
130 int mlx5dr_action_destroy(struct mlx5dr_action *action);
131 
132 static inline bool
133 mlx5dr_is_supported(struct mlx5_core_dev *dev)
134 {
135 	return MLX5_CAP_GEN(dev, roce) &&
136 	       (MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner) ||
137 		(MLX5_CAP_ESW_FLOWTABLE_FDB(dev, sw_owner_v2) &&
138 		 (MLX5_CAP_GEN(dev, steering_format_version) <=
139 		  MLX5_STEERING_FORMAT_CONNECTX_6DX)));
140 }
141 
142 /* buddy functions & structure */
143 
144 struct mlx5dr_icm_mr;
145 
146 struct mlx5dr_icm_buddy_mem {
147 	unsigned long		**bitmap;
148 	unsigned int		*num_free;
149 	u32			max_order;
150 	struct list_head	list_node;
151 	struct mlx5dr_icm_mr	*icm_mr;
152 	struct mlx5dr_icm_pool	*pool;
153 
154 	/* This is the list of used chunks. HW may be accessing this memory */
155 	struct list_head	used_list;
156 	u64			used_memory;
157 
158 	/* Hardware may be accessing this memory but at some future,
159 	 * undetermined time, it might cease to do so.
160 	 * sync_ste command sets them free.
161 	 */
162 	struct list_head	hot_list;
163 };
164 
165 int mlx5dr_buddy_init(struct mlx5dr_icm_buddy_mem *buddy,
166 		      unsigned int max_order);
167 void mlx5dr_buddy_cleanup(struct mlx5dr_icm_buddy_mem *buddy);
168 int mlx5dr_buddy_alloc_mem(struct mlx5dr_icm_buddy_mem *buddy,
169 			   unsigned int order,
170 			   unsigned int *segment);
171 void mlx5dr_buddy_free_mem(struct mlx5dr_icm_buddy_mem *buddy,
172 			   unsigned int seg, unsigned int order);
173 
174 #endif /* _MLX5DR_H_ */
175