xref: /linux/drivers/net/ethernet/mellanox/mlxsw/spectrum_acl_tcam.h (revision a1ff5a7d78a036d6c2178ee5acd6ba4946243800)
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_SPECTRUM_ACL_TCAM_H
5 #define _MLXSW_SPECTRUM_ACL_TCAM_H
6 
7 #include <linux/list.h>
8 #include <linux/parman.h>
9 #include <linux/idr.h>
10 
11 #include "reg.h"
12 #include "spectrum.h"
13 #include "core_acl_flex_keys.h"
14 
15 struct mlxsw_sp_acl_tcam {
16 	struct ida used_regions;
17 	unsigned int max_regions;
18 	struct ida used_groups;
19 	unsigned int max_groups;
20 	unsigned int max_group_size;
21 	struct mutex lock; /* guards vregion list */
22 	struct list_head vregion_list;
23 	u32 vregion_rehash_intrvl;   /* ms */
24 	unsigned long priv[];
25 	/* priv has to be always the last item */
26 };
27 
28 size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp);
29 int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
30 			   struct mlxsw_sp_acl_tcam *tcam);
31 void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
32 			    struct mlxsw_sp_acl_tcam *tcam);
33 int mlxsw_sp_acl_tcam_priority_get(struct mlxsw_sp *mlxsw_sp,
34 				   struct mlxsw_sp_acl_rule_info *rulei,
35 				   u32 *priority, bool fillup_priority);
36 
37 struct mlxsw_sp_acl_profile_ops {
38 	size_t ruleset_priv_size;
39 	int (*ruleset_add)(struct mlxsw_sp *mlxsw_sp,
40 			   struct mlxsw_sp_acl_tcam *tcam, void *ruleset_priv,
41 			   struct mlxsw_afk_element_usage *tmplt_elusage,
42 			   unsigned int *p_min_prio, unsigned int *p_max_prio);
43 	void (*ruleset_del)(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv);
44 	int (*ruleset_bind)(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv,
45 			    struct mlxsw_sp_port *mlxsw_sp_port,
46 			    bool ingress);
47 	void (*ruleset_unbind)(struct mlxsw_sp *mlxsw_sp, void *ruleset_priv,
48 			       struct mlxsw_sp_port *mlxsw_sp_port,
49 			       bool ingress);
50 	u16 (*ruleset_group_id)(void *ruleset_priv);
51 	size_t rule_priv_size;
52 	int (*rule_add)(struct mlxsw_sp *mlxsw_sp,
53 			void *ruleset_priv, void *rule_priv,
54 			struct mlxsw_sp_acl_rule_info *rulei);
55 	void (*rule_del)(struct mlxsw_sp *mlxsw_sp, void *rule_priv);
56 	int (*rule_action_replace)(struct mlxsw_sp *mlxsw_sp, void *rule_priv,
57 				   struct mlxsw_sp_acl_rule_info *rulei);
58 	int (*rule_activity_get)(struct mlxsw_sp *mlxsw_sp, void *rule_priv,
59 				 bool *activity);
60 };
61 
62 const struct mlxsw_sp_acl_profile_ops *
63 mlxsw_sp_acl_tcam_profile_ops(struct mlxsw_sp *mlxsw_sp,
64 			      enum mlxsw_sp_acl_profile profile);
65 
66 #define MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT 16
67 #define MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP 16
68 
69 #define MLXSW_SP_ACL_TCAM_CATCHALL_PRIO (~0U)
70 
71 #define MLXSW_SP_ACL_TCAM_MASK_LEN \
72 	(MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN * BITS_PER_BYTE)
73 
74 struct mlxsw_sp_acl_tcam_group;
75 struct mlxsw_sp_acl_tcam_vregion;
76 
77 struct mlxsw_sp_acl_tcam_region {
78 	struct mlxsw_sp_acl_tcam_vregion *vregion;
79 	struct mlxsw_sp_acl_tcam_group *group;
80 	struct list_head list; /* Member of a TCAM group */
81 	enum mlxsw_reg_ptar_key_type key_type;
82 	u16 id; /* ACL ID and region ID - they are same */
83 	char tcam_region_info[MLXSW_REG_PXXX_TCAM_REGION_INFO_LEN];
84 	struct mlxsw_afk_key_info *key_info;
85 	struct mlxsw_sp *mlxsw_sp;
86 	unsigned long priv[];
87 	/* priv has to be always the last item */
88 };
89 
90 struct mlxsw_sp_acl_ctcam_region {
91 	struct parman *parman;
92 	const struct mlxsw_sp_acl_ctcam_region_ops *ops;
93 	struct mlxsw_sp_acl_tcam_region *region;
94 };
95 
96 struct mlxsw_sp_acl_ctcam_chunk {
97 	struct parman_prio parman_prio;
98 };
99 
100 struct mlxsw_sp_acl_ctcam_entry {
101 	struct parman_item parman_item;
102 };
103 
104 struct mlxsw_sp_acl_ctcam_region_ops {
105 	int (*entry_insert)(struct mlxsw_sp_acl_ctcam_region *cregion,
106 			    struct mlxsw_sp_acl_ctcam_entry *centry,
107 			    const char *mask);
108 	void (*entry_remove)(struct mlxsw_sp_acl_ctcam_region *cregion,
109 			     struct mlxsw_sp_acl_ctcam_entry *centry);
110 };
111 
112 int
113 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp,
114 			       struct mlxsw_sp_acl_ctcam_region *cregion,
115 			       struct mlxsw_sp_acl_tcam_region *region,
116 			       const struct mlxsw_sp_acl_ctcam_region_ops *ops);
117 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion);
118 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion,
119 				   struct mlxsw_sp_acl_ctcam_chunk *cchunk,
120 				   unsigned int priority);
121 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk);
122 int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp,
123 				 struct mlxsw_sp_acl_ctcam_region *cregion,
124 				 struct mlxsw_sp_acl_ctcam_chunk *cchunk,
125 				 struct mlxsw_sp_acl_ctcam_entry *centry,
126 				 struct mlxsw_sp_acl_rule_info *rulei,
127 				 bool fillup_priority);
128 void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp,
129 				  struct mlxsw_sp_acl_ctcam_region *cregion,
130 				  struct mlxsw_sp_acl_ctcam_chunk *cchunk,
131 				  struct mlxsw_sp_acl_ctcam_entry *centry);
132 int mlxsw_sp_acl_ctcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
133 					    struct mlxsw_sp_acl_ctcam_region *cregion,
134 					    struct mlxsw_sp_acl_ctcam_entry *centry,
135 					    struct mlxsw_sp_acl_rule_info *rulei);
136 static inline unsigned int
mlxsw_sp_acl_ctcam_entry_offset(struct mlxsw_sp_acl_ctcam_entry * centry)137 mlxsw_sp_acl_ctcam_entry_offset(struct mlxsw_sp_acl_ctcam_entry *centry)
138 {
139 	return centry->parman_item.index;
140 }
141 
142 enum mlxsw_sp_acl_atcam_region_type {
143 	MLXSW_SP_ACL_ATCAM_REGION_TYPE_2KB,
144 	MLXSW_SP_ACL_ATCAM_REGION_TYPE_4KB,
145 	MLXSW_SP_ACL_ATCAM_REGION_TYPE_8KB,
146 	MLXSW_SP_ACL_ATCAM_REGION_TYPE_12KB,
147 	__MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX,
148 };
149 
150 #define MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX \
151 	(__MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX - 1)
152 
153 struct mlxsw_sp_acl_atcam {
154 	struct mlxsw_sp_acl_erp_core *erp_core;
155 };
156 
157 struct mlxsw_sp_acl_atcam_region {
158 	struct rhashtable entries_ht; /* A-TCAM only */
159 	struct list_head entries_list; /* A-TCAM only */
160 	struct mlxsw_sp_acl_ctcam_region cregion;
161 	const struct mlxsw_sp_acl_atcam_region_ops *ops;
162 	struct mlxsw_sp_acl_tcam_region *region;
163 	struct mlxsw_sp_acl_atcam *atcam;
164 	enum mlxsw_sp_acl_atcam_region_type type;
165 	struct mlxsw_sp_acl_erp_table *erp_table;
166 	void *priv;
167 };
168 
169 struct mlxsw_sp_acl_atcam_entry_ht_key {
170 	char enc_key[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN]; /* Encoded key, minus
171 							    * delta bits.
172 							    */
173 	u8 erp_id;
174 };
175 
176 struct mlxsw_sp_acl_atcam_chunk {
177 	struct mlxsw_sp_acl_ctcam_chunk cchunk;
178 };
179 
180 struct mlxsw_sp_acl_atcam_entry {
181 	struct rhash_head ht_node;
182 	struct list_head list; /* Member in entries_list */
183 	struct mlxsw_sp_acl_atcam_entry_ht_key ht_key;
184 	struct {
185 		u16 start;
186 		u8 mask;
187 		u8 value;
188 	} delta_info;
189 	struct mlxsw_sp_acl_ctcam_entry centry;
190 	struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
191 	struct mlxsw_sp_acl_erp_mask *erp_mask;
192 };
193 
194 static inline struct mlxsw_sp_acl_atcam_region *
mlxsw_sp_acl_tcam_cregion_aregion(struct mlxsw_sp_acl_ctcam_region * cregion)195 mlxsw_sp_acl_tcam_cregion_aregion(struct mlxsw_sp_acl_ctcam_region *cregion)
196 {
197 	return container_of(cregion, struct mlxsw_sp_acl_atcam_region, cregion);
198 }
199 
200 static inline struct mlxsw_sp_acl_atcam_entry *
mlxsw_sp_acl_tcam_centry_aentry(struct mlxsw_sp_acl_ctcam_entry * centry)201 mlxsw_sp_acl_tcam_centry_aentry(struct mlxsw_sp_acl_ctcam_entry *centry)
202 {
203 	return container_of(centry, struct mlxsw_sp_acl_atcam_entry, centry);
204 }
205 
206 int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
207 					u16 region_id);
208 int
209 mlxsw_sp_acl_atcam_region_init(struct mlxsw_sp *mlxsw_sp,
210 			       struct mlxsw_sp_acl_atcam *atcam,
211 			       struct mlxsw_sp_acl_atcam_region *aregion,
212 			       struct mlxsw_sp_acl_tcam_region *region,
213 			       void *hints_priv,
214 			       const struct mlxsw_sp_acl_ctcam_region_ops *ops);
215 void mlxsw_sp_acl_atcam_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
216 void mlxsw_sp_acl_atcam_chunk_init(struct mlxsw_sp_acl_atcam_region *aregion,
217 				   struct mlxsw_sp_acl_atcam_chunk *achunk,
218 				   unsigned int priority);
219 void mlxsw_sp_acl_atcam_chunk_fini(struct mlxsw_sp_acl_atcam_chunk *achunk);
220 int mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
221 				 struct mlxsw_sp_acl_atcam_region *aregion,
222 				 struct mlxsw_sp_acl_atcam_chunk *achunk,
223 				 struct mlxsw_sp_acl_atcam_entry *aentry,
224 				 struct mlxsw_sp_acl_rule_info *rulei);
225 void mlxsw_sp_acl_atcam_entry_del(struct mlxsw_sp *mlxsw_sp,
226 				  struct mlxsw_sp_acl_atcam_region *aregion,
227 				  struct mlxsw_sp_acl_atcam_chunk *achunk,
228 				  struct mlxsw_sp_acl_atcam_entry *aentry);
229 int mlxsw_sp_acl_atcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
230 					    struct mlxsw_sp_acl_atcam_region *aregion,
231 					    struct mlxsw_sp_acl_atcam_entry *aentry,
232 					    struct mlxsw_sp_acl_rule_info *rulei);
233 int mlxsw_sp_acl_atcam_init(struct mlxsw_sp *mlxsw_sp,
234 			    struct mlxsw_sp_acl_atcam *atcam);
235 void mlxsw_sp_acl_atcam_fini(struct mlxsw_sp *mlxsw_sp,
236 			     struct mlxsw_sp_acl_atcam *atcam);
237 void *
238 mlxsw_sp_acl_atcam_rehash_hints_get(struct mlxsw_sp_acl_atcam_region *aregion);
239 void mlxsw_sp_acl_atcam_rehash_hints_put(void *hints_priv);
240 
241 struct mlxsw_sp_acl_erp_delta;
242 
243 u16 mlxsw_sp_acl_erp_delta_start(const struct mlxsw_sp_acl_erp_delta *delta);
244 u8 mlxsw_sp_acl_erp_delta_mask(const struct mlxsw_sp_acl_erp_delta *delta);
245 u8 mlxsw_sp_acl_erp_delta_value(const struct mlxsw_sp_acl_erp_delta *delta,
246 				const char *enc_key);
247 void mlxsw_sp_acl_erp_delta_clear(const struct mlxsw_sp_acl_erp_delta *delta,
248 				  const char *enc_key);
249 
250 struct mlxsw_sp_acl_erp_mask;
251 
252 bool
253 mlxsw_sp_acl_erp_mask_is_ctcam(const struct mlxsw_sp_acl_erp_mask *erp_mask);
254 u8 mlxsw_sp_acl_erp_mask_erp_id(const struct mlxsw_sp_acl_erp_mask *erp_mask);
255 const struct mlxsw_sp_acl_erp_delta *
256 mlxsw_sp_acl_erp_delta(const struct mlxsw_sp_acl_erp_mask *erp_mask);
257 struct mlxsw_sp_acl_erp_mask *
258 mlxsw_sp_acl_erp_mask_get(struct mlxsw_sp_acl_atcam_region *aregion,
259 			  const char *mask, bool ctcam);
260 void mlxsw_sp_acl_erp_mask_put(struct mlxsw_sp_acl_atcam_region *aregion,
261 			       struct mlxsw_sp_acl_erp_mask *erp_mask);
262 int mlxsw_sp_acl_erp_bf_insert(struct mlxsw_sp *mlxsw_sp,
263 			       struct mlxsw_sp_acl_atcam_region *aregion,
264 			       struct mlxsw_sp_acl_erp_mask *erp_mask,
265 			       struct mlxsw_sp_acl_atcam_entry *aentry);
266 void mlxsw_sp_acl_erp_bf_remove(struct mlxsw_sp *mlxsw_sp,
267 				struct mlxsw_sp_acl_atcam_region *aregion,
268 				struct mlxsw_sp_acl_erp_mask *erp_mask,
269 				struct mlxsw_sp_acl_atcam_entry *aentry);
270 void *
271 mlxsw_sp_acl_erp_rehash_hints_get(struct mlxsw_sp_acl_atcam_region *aregion);
272 void mlxsw_sp_acl_erp_rehash_hints_put(void *hints_priv);
273 int mlxsw_sp_acl_erp_region_init(struct mlxsw_sp_acl_atcam_region *aregion,
274 				 void *hints_priv);
275 void mlxsw_sp_acl_erp_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
276 int mlxsw_sp_acl_erps_init(struct mlxsw_sp *mlxsw_sp,
277 			   struct mlxsw_sp_acl_atcam *atcam);
278 void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp,
279 			    struct mlxsw_sp_acl_atcam *atcam);
280 
281 struct mlxsw_sp_acl_bf;
282 
283 struct mlxsw_sp_acl_bf_ops {
284 	unsigned int (*index_get)(struct mlxsw_sp_acl_bf *bf,
285 				  struct mlxsw_sp_acl_atcam_region *aregion,
286 				  struct mlxsw_sp_acl_atcam_entry *aentry);
287 };
288 
289 int
290 mlxsw_sp_acl_bf_entry_add(struct mlxsw_sp *mlxsw_sp,
291 			  struct mlxsw_sp_acl_bf *bf,
292 			  struct mlxsw_sp_acl_atcam_region *aregion,
293 			  unsigned int erp_bank,
294 			  struct mlxsw_sp_acl_atcam_entry *aentry);
295 void
296 mlxsw_sp_acl_bf_entry_del(struct mlxsw_sp *mlxsw_sp,
297 			  struct mlxsw_sp_acl_bf *bf,
298 			  struct mlxsw_sp_acl_atcam_region *aregion,
299 			  unsigned int erp_bank,
300 			  struct mlxsw_sp_acl_atcam_entry *aentry);
301 struct mlxsw_sp_acl_bf *
302 mlxsw_sp_acl_bf_init(struct mlxsw_sp *mlxsw_sp, unsigned int num_erp_banks);
303 void mlxsw_sp_acl_bf_fini(struct mlxsw_sp_acl_bf *bf);
304 
305 #endif
306