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