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