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