1 | /* SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 */ |
2 | /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */ |
3 | |
4 | #ifndef _MLXSW_CORE_ACL_FLEX_KEYS_H |
5 | #define _MLXSW_CORE_ACL_FLEX_KEYS_H |
6 | |
7 | #include <linux/types.h> |
8 | #include <linux/bitmap.h> |
9 | |
10 | #include "item.h" |
11 | |
12 | enum mlxsw_afk_element { |
13 | MLXSW_AFK_ELEMENT_SRC_SYS_PORT, |
14 | MLXSW_AFK_ELEMENT_DMAC_32_47, |
15 | MLXSW_AFK_ELEMENT_DMAC_0_31, |
16 | MLXSW_AFK_ELEMENT_SMAC_32_47, |
17 | MLXSW_AFK_ELEMENT_SMAC_0_31, |
18 | MLXSW_AFK_ELEMENT_ETHERTYPE, |
19 | MLXSW_AFK_ELEMENT_IP_PROTO, |
20 | MLXSW_AFK_ELEMENT_SRC_IP_96_127, |
21 | MLXSW_AFK_ELEMENT_SRC_IP_64_95, |
22 | MLXSW_AFK_ELEMENT_SRC_IP_32_63, |
23 | MLXSW_AFK_ELEMENT_SRC_IP_0_31, |
24 | MLXSW_AFK_ELEMENT_DST_IP_96_127, |
25 | MLXSW_AFK_ELEMENT_DST_IP_64_95, |
26 | MLXSW_AFK_ELEMENT_DST_IP_32_63, |
27 | MLXSW_AFK_ELEMENT_DST_IP_0_31, |
28 | MLXSW_AFK_ELEMENT_DST_L4_PORT, |
29 | MLXSW_AFK_ELEMENT_SRC_L4_PORT, |
30 | MLXSW_AFK_ELEMENT_VID, |
31 | MLXSW_AFK_ELEMENT_PCP, |
32 | MLXSW_AFK_ELEMENT_TCP_FLAGS, |
33 | MLXSW_AFK_ELEMENT_IP_TTL_, |
34 | MLXSW_AFK_ELEMENT_IP_ECN, |
35 | MLXSW_AFK_ELEMENT_IP_DSCP, |
36 | MLXSW_AFK_ELEMENT_VIRT_ROUTER, |
37 | MLXSW_AFK_ELEMENT_FDB_MISS, |
38 | MLXSW_AFK_ELEMENT_L4_PORT_RANGE, |
39 | MLXSW_AFK_ELEMENT_VIRT_ROUTER_0_3, |
40 | MLXSW_AFK_ELEMENT_VIRT_ROUTER_4_7, |
41 | MLXSW_AFK_ELEMENT_VIRT_ROUTER_MSB, |
42 | MLXSW_AFK_ELEMENT_MAX, |
43 | }; |
44 | |
45 | enum mlxsw_afk_element_type { |
46 | MLXSW_AFK_ELEMENT_TYPE_U32, |
47 | MLXSW_AFK_ELEMENT_TYPE_BUF, |
48 | }; |
49 | |
50 | struct mlxsw_afk_element_info { |
51 | enum mlxsw_afk_element element; /* element ID */ |
52 | enum mlxsw_afk_element_type type; |
53 | struct mlxsw_item item; /* element geometry in internal storage */ |
54 | }; |
55 | |
56 | #define MLXSW_AFK_ELEMENT_INFO(_type, _element, _offset, _shift, _size) \ |
57 | [MLXSW_AFK_ELEMENT_##_element] = { \ |
58 | .element = MLXSW_AFK_ELEMENT_##_element, \ |
59 | .type = _type, \ |
60 | .item = { \ |
61 | .offset = _offset, \ |
62 | .shift = _shift, \ |
63 | .size = {.bits = _size}, \ |
64 | .name = #_element, \ |
65 | }, \ |
66 | } |
67 | |
68 | #define MLXSW_AFK_ELEMENT_INFO_U32(_element, _offset, _shift, _size) \ |
69 | MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_U32, \ |
70 | _element, _offset, _shift, _size) |
71 | |
72 | #define MLXSW_AFK_ELEMENT_INFO_BUF(_element, _offset, _size) \ |
73 | MLXSW_AFK_ELEMENT_INFO(MLXSW_AFK_ELEMENT_TYPE_BUF, \ |
74 | _element, _offset, 0, _size) |
75 | |
76 | #define MLXSW_AFK_ELEMENT_STORAGE_SIZE 0x44 |
77 | |
78 | struct mlxsw_afk_element_inst { /* element instance in actual block */ |
79 | enum mlxsw_afk_element element; |
80 | enum mlxsw_afk_element_type type; |
81 | struct mlxsw_item item; /* element geometry in block */ |
82 | int u32_key_diff; /* in case value needs to be adjusted before write |
83 | * this diff is here to handle that |
84 | */ |
85 | bool avoid_size_check; |
86 | }; |
87 | |
88 | #define MLXSW_AFK_ELEMENT_INST(_type, _element, _offset, \ |
89 | _shift, _size, _u32_key_diff, _avoid_size_check) \ |
90 | { \ |
91 | .element = MLXSW_AFK_ELEMENT_##_element, \ |
92 | .type = _type, \ |
93 | .item = { \ |
94 | .offset = _offset, \ |
95 | .shift = _shift, \ |
96 | .size = {.bits = _size}, \ |
97 | .name = #_element, \ |
98 | }, \ |
99 | .u32_key_diff = _u32_key_diff, \ |
100 | .avoid_size_check = _avoid_size_check, \ |
101 | } |
102 | |
103 | #define MLXSW_AFK_ELEMENT_INST_U32(_element, _offset, _shift, _size) \ |
104 | MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \ |
105 | _element, _offset, _shift, _size, 0, false) |
106 | |
107 | #define MLXSW_AFK_ELEMENT_INST_EXT_U32(_element, _offset, \ |
108 | _shift, _size, _key_diff, \ |
109 | _avoid_size_check) \ |
110 | MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_U32, \ |
111 | _element, _offset, _shift, _size, \ |
112 | _key_diff, _avoid_size_check) |
113 | |
114 | #define MLXSW_AFK_ELEMENT_INST_BUF(_element, _offset, _size) \ |
115 | MLXSW_AFK_ELEMENT_INST(MLXSW_AFK_ELEMENT_TYPE_BUF, \ |
116 | _element, _offset, 0, _size, 0, false) |
117 | |
118 | struct mlxsw_afk_block { |
119 | u16 encoding; /* block ID */ |
120 | struct mlxsw_afk_element_inst *instances; |
121 | unsigned int instances_count; |
122 | bool high_entropy; |
123 | }; |
124 | |
125 | #define MLXSW_AFK_BLOCK(_encoding, _instances) \ |
126 | { \ |
127 | .encoding = _encoding, \ |
128 | .instances = _instances, \ |
129 | .instances_count = ARRAY_SIZE(_instances), \ |
130 | } |
131 | |
132 | #define MLXSW_AFK_BLOCK_HIGH_ENTROPY(_encoding, _instances) \ |
133 | { \ |
134 | .encoding = _encoding, \ |
135 | .instances = _instances, \ |
136 | .instances_count = ARRAY_SIZE(_instances), \ |
137 | .high_entropy = true, \ |
138 | } |
139 | |
140 | struct mlxsw_afk_element_usage { |
141 | DECLARE_BITMAP(usage, MLXSW_AFK_ELEMENT_MAX); |
142 | }; |
143 | |
144 | #define mlxsw_afk_element_usage_for_each(element, elusage) \ |
145 | for_each_set_bit(element, (elusage)->usage, MLXSW_AFK_ELEMENT_MAX) |
146 | |
147 | static inline void |
148 | mlxsw_afk_element_usage_add(struct mlxsw_afk_element_usage *elusage, |
149 | enum mlxsw_afk_element element) |
150 | { |
151 | __set_bit(element, elusage->usage); |
152 | } |
153 | |
154 | static inline void |
155 | mlxsw_afk_element_usage_zero(struct mlxsw_afk_element_usage *elusage) |
156 | { |
157 | bitmap_zero(dst: elusage->usage, nbits: MLXSW_AFK_ELEMENT_MAX); |
158 | } |
159 | |
160 | static inline void |
161 | mlxsw_afk_element_usage_fill(struct mlxsw_afk_element_usage *elusage, |
162 | const enum mlxsw_afk_element *elements, |
163 | unsigned int elements_count) |
164 | { |
165 | int i; |
166 | |
167 | mlxsw_afk_element_usage_zero(elusage); |
168 | for (i = 0; i < elements_count; i++) |
169 | mlxsw_afk_element_usage_add(elusage, element: elements[i]); |
170 | } |
171 | |
172 | static inline bool |
173 | mlxsw_afk_element_usage_subset(struct mlxsw_afk_element_usage *elusage_small, |
174 | struct mlxsw_afk_element_usage *elusage_big) |
175 | { |
176 | int i; |
177 | |
178 | for (i = 0; i < MLXSW_AFK_ELEMENT_MAX; i++) |
179 | if (test_bit(i, elusage_small->usage) && |
180 | !test_bit(i, elusage_big->usage)) |
181 | return false; |
182 | return true; |
183 | } |
184 | |
185 | struct mlxsw_afk; |
186 | |
187 | struct mlxsw_afk_ops { |
188 | const struct mlxsw_afk_block *blocks; |
189 | unsigned int blocks_count; |
190 | void (*encode_block)(char *output, int block_index, char *block); |
191 | void (*clear_block)(char *output, int block_index); |
192 | }; |
193 | |
194 | struct mlxsw_afk *mlxsw_afk_create(unsigned int max_blocks, |
195 | const struct mlxsw_afk_ops *ops); |
196 | void mlxsw_afk_destroy(struct mlxsw_afk *mlxsw_afk); |
197 | |
198 | struct mlxsw_afk_key_info; |
199 | |
200 | struct mlxsw_afk_key_info * |
201 | mlxsw_afk_key_info_get(struct mlxsw_afk *mlxsw_afk, |
202 | struct mlxsw_afk_element_usage *elusage); |
203 | void mlxsw_afk_key_info_put(struct mlxsw_afk_key_info *key_info); |
204 | bool mlxsw_afk_key_info_subset(struct mlxsw_afk_key_info *key_info, |
205 | struct mlxsw_afk_element_usage *elusage); |
206 | |
207 | u16 |
208 | mlxsw_afk_key_info_block_encoding_get(const struct mlxsw_afk_key_info *key_info, |
209 | int block_index); |
210 | unsigned int |
211 | mlxsw_afk_key_info_blocks_count_get(const struct mlxsw_afk_key_info *key_info); |
212 | |
213 | struct mlxsw_afk_element_values { |
214 | struct mlxsw_afk_element_usage elusage; |
215 | struct { |
216 | char key[MLXSW_AFK_ELEMENT_STORAGE_SIZE]; |
217 | char mask[MLXSW_AFK_ELEMENT_STORAGE_SIZE]; |
218 | } storage; |
219 | }; |
220 | |
221 | void mlxsw_afk_values_add_u32(struct mlxsw_afk_element_values *values, |
222 | enum mlxsw_afk_element element, |
223 | u32 key_value, u32 mask_value); |
224 | void mlxsw_afk_values_add_buf(struct mlxsw_afk_element_values *values, |
225 | enum mlxsw_afk_element element, |
226 | const char *key_value, const char *mask_value, |
227 | unsigned int len); |
228 | void mlxsw_afk_encode(struct mlxsw_afk *mlxsw_afk, |
229 | struct mlxsw_afk_key_info *key_info, |
230 | struct mlxsw_afk_element_values *values, |
231 | char *key, char *mask); |
232 | void mlxsw_afk_clear(struct mlxsw_afk *mlxsw_afk, char *key, |
233 | int block_start, int block_end); |
234 | |
235 | #endif |
236 | |