spectrum_acl_tcam.h

  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
 15struct 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
 28size_t mlxsw_sp_acl_tcam_priv_size(struct mlxsw_sp *mlxsw_sp);
 29int mlxsw_sp_acl_tcam_init(struct mlxsw_sp *mlxsw_sp,
 30			   struct mlxsw_sp_acl_tcam *tcam);
 31void mlxsw_sp_acl_tcam_fini(struct mlxsw_sp *mlxsw_sp,
 32			    struct mlxsw_sp_acl_tcam *tcam);
 33int 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
 37struct 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
 62const struct mlxsw_sp_acl_profile_ops *
 63mlxsw_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
 74struct mlxsw_sp_acl_tcam_group;
 75struct mlxsw_sp_acl_tcam_vregion;
 76
 77struct 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
 90struct 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
 96struct mlxsw_sp_acl_ctcam_chunk {
 97	struct parman_prio parman_prio;
 98};
 99
100struct mlxsw_sp_acl_ctcam_entry {
101	struct parman_item parman_item;
102};
103
104struct 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
112int
113mlxsw_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);
117void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion);
118void 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);
121void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk);
122int 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);
128void 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);
132int 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);
136static inline unsigned int
137mlxsw_sp_acl_ctcam_entry_offset(struct mlxsw_sp_acl_ctcam_entry *centry)
138{
139	return centry->parman_item.index;
140}
141
142enum 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
153struct mlxsw_sp_acl_atcam {
154	struct mlxsw_sp_acl_erp_core *erp_core;
155};
156
157struct 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
169struct 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
176struct mlxsw_sp_acl_atcam_chunk {
177	struct mlxsw_sp_acl_ctcam_chunk cchunk;
178};
179
180struct 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
194static inline struct mlxsw_sp_acl_atcam_region *
195mlxsw_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
200static inline struct mlxsw_sp_acl_atcam_entry *
201mlxsw_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
206int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
207					u16 region_id);
208int
209mlxsw_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);
215void mlxsw_sp_acl_atcam_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
216void 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);
219void mlxsw_sp_acl_atcam_chunk_fini(struct mlxsw_sp_acl_atcam_chunk *achunk);
220int 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);
225void 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);
229int 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);
233int mlxsw_sp_acl_atcam_init(struct mlxsw_sp *mlxsw_sp,
234			    struct mlxsw_sp_acl_atcam *atcam);
235void mlxsw_sp_acl_atcam_fini(struct mlxsw_sp *mlxsw_sp,
236			     struct mlxsw_sp_acl_atcam *atcam);
237void *
238mlxsw_sp_acl_atcam_rehash_hints_get(struct mlxsw_sp_acl_atcam_region *aregion);
239void mlxsw_sp_acl_atcam_rehash_hints_put(void *hints_priv);
240
241struct mlxsw_sp_acl_erp_delta;
242
243u16 mlxsw_sp_acl_erp_delta_start(const struct mlxsw_sp_acl_erp_delta *delta);
244u8 mlxsw_sp_acl_erp_delta_mask(const struct mlxsw_sp_acl_erp_delta *delta);
245u8 mlxsw_sp_acl_erp_delta_value(const struct mlxsw_sp_acl_erp_delta *delta,
246				const char *enc_key);
247void mlxsw_sp_acl_erp_delta_clear(const struct mlxsw_sp_acl_erp_delta *delta,
248				  const char *enc_key);
249
250struct mlxsw_sp_acl_erp_mask;
251
252bool
253mlxsw_sp_acl_erp_mask_is_ctcam(const struct mlxsw_sp_acl_erp_mask *erp_mask);
254u8 mlxsw_sp_acl_erp_mask_erp_id(const struct mlxsw_sp_acl_erp_mask *erp_mask);
255const struct mlxsw_sp_acl_erp_delta *
256mlxsw_sp_acl_erp_delta(const struct mlxsw_sp_acl_erp_mask *erp_mask);
257struct mlxsw_sp_acl_erp_mask *
258mlxsw_sp_acl_erp_mask_get(struct mlxsw_sp_acl_atcam_region *aregion,
259			  const char *mask, bool ctcam);
260void mlxsw_sp_acl_erp_mask_put(struct mlxsw_sp_acl_atcam_region *aregion,
261			       struct mlxsw_sp_acl_erp_mask *erp_mask);
262int 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);
266void 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);
270void *
271mlxsw_sp_acl_erp_rehash_hints_get(struct mlxsw_sp_acl_atcam_region *aregion);
272void mlxsw_sp_acl_erp_rehash_hints_put(void *hints_priv);
273int mlxsw_sp_acl_erp_region_init(struct mlxsw_sp_acl_atcam_region *aregion,
274				 void *hints_priv);
275void mlxsw_sp_acl_erp_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
276int mlxsw_sp_acl_erps_init(struct mlxsw_sp *mlxsw_sp,
277			   struct mlxsw_sp_acl_atcam *atcam);
278void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp,
279			    struct mlxsw_sp_acl_atcam *atcam);
280
281struct mlxsw_sp_acl_bf;
282
283struct 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
289int
290mlxsw_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);
295void
296mlxsw_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);
301struct mlxsw_sp_acl_bf *
302mlxsw_sp_acl_bf_init(struct mlxsw_sp *mlxsw_sp, unsigned int num_erp_banks);
303void mlxsw_sp_acl_bf_fini(struct mlxsw_sp_acl_bf *bf);
304
305#endif