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)(struct mlxsw_sp *mlxsw_sp);
  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
  71 struct mlxsw_sp_acl_tcam_region {
  72         struct list_head list; /* Member of a TCAM group */
  73         struct list_head chunk_list; /* List of chunks under this region */
  74         struct mlxsw_sp_acl_tcam_group *group;
  75         enum mlxsw_reg_ptar_key_type key_type;
  76         u16 id; /* ACL ID and region ID - they are same */
  77         char tcam_region_info[MLXSW_REG_PXXX_TCAM_REGION_INFO_LEN];
  78         struct mlxsw_afk_key_info *key_info;
  79         struct mlxsw_sp *mlxsw_sp;
  80         unsigned long priv[0];
  81         /* priv has to be always the last item */
  82 };
  83
  84 struct mlxsw_sp_acl_ctcam_region {
  85         struct parman *parman;
  86         const struct mlxsw_sp_acl_ctcam_region_ops *ops;
  87         struct mlxsw_sp_acl_tcam_region *region;
  88 };
  89
  90 struct mlxsw_sp_acl_ctcam_chunk {
  91         struct parman_prio parman_prio;
  92 };
  93
  94 struct mlxsw_sp_acl_ctcam_entry {
  95         struct parman_item parman_item;
  96 };
  97
  98 struct mlxsw_sp_acl_ctcam_region_ops {
  99         int (*entry_insert)(struct mlxsw_sp_acl_ctcam_region *cregion,
 100                             struct mlxsw_sp_acl_ctcam_entry *centry,
 101                             const char *mask);
 102         void (*entry_remove)(struct mlxsw_sp_acl_ctcam_region *cregion,
 103                              struct mlxsw_sp_acl_ctcam_entry *centry);
 104 };
 105
 106 int
 107 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp,
 108                                struct mlxsw_sp_acl_ctcam_region *cregion,
 109                                struct mlxsw_sp_acl_tcam_region *region,
 110                                const struct mlxsw_sp_acl_ctcam_region_ops *ops);
 111 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion);
 112 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion,
 113                                    struct mlxsw_sp_acl_ctcam_chunk *cchunk,
 114                                    unsigned int priority);
 115 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk);
 116 int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp,
 117                                  struct mlxsw_sp_acl_ctcam_region *cregion,
 118                                  struct mlxsw_sp_acl_ctcam_chunk *cchunk,
 119                                  struct mlxsw_sp_acl_ctcam_entry *centry,
 120                                  struct mlxsw_sp_acl_rule_info *rulei,
 121                                  bool fillup_priority);
 122 void mlxsw_sp_acl_ctcam_entry_del(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 int mlxsw_sp_acl_ctcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
 127                                             struct mlxsw_sp_acl_ctcam_region *cregion,
 128                                             struct mlxsw_sp_acl_ctcam_entry *centry,
 129                                             struct mlxsw_sp_acl_rule_info *rulei);
 130 static inline unsigned int
 131 mlxsw_sp_acl_ctcam_entry_offset(struct mlxsw_sp_acl_ctcam_entry *centry)
 132 {
 133         return centry->parman_item.index;
 134 }
 135
 136 enum mlxsw_sp_acl_atcam_region_type {
 137         MLXSW_SP_ACL_ATCAM_REGION_TYPE_2KB,
 138         MLXSW_SP_ACL_ATCAM_REGION_TYPE_4KB,
 139         MLXSW_SP_ACL_ATCAM_REGION_TYPE_8KB,
 140         MLXSW_SP_ACL_ATCAM_REGION_TYPE_12KB,
 141         __MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX,
 142 };
 143
 144 #define MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX \
 145         (__MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX - 1)
 146
 147 struct mlxsw_sp_acl_atcam {
 148         struct mlxsw_sp_acl_erp_core *erp_core;
 149 };
 150
 151 struct mlxsw_sp_acl_atcam_region {
 152         struct rhashtable entries_ht; /* A-TCAM only */
 153         struct list_head entries_list; /* A-TCAM only */
 154         struct mlxsw_sp_acl_ctcam_region cregion;
 155         const struct mlxsw_sp_acl_atcam_region_ops *ops;
 156         struct mlxsw_sp_acl_tcam_region *region;
 157         struct mlxsw_sp_acl_atcam *atcam;
 158         enum mlxsw_sp_acl_atcam_region_type type;
 159         struct mlxsw_sp_acl_erp_table *erp_table;
 160         void *priv;
 161 };
 162
 163 struct mlxsw_sp_acl_atcam_entry_ht_key {
 164         char full_enc_key[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN]; /* Encoded
 165                                                                  * key.
 166                                                                  */
 167         u8 erp_id;
 168 };
 169
 170 struct mlxsw_sp_acl_atcam_chunk {
 171         struct mlxsw_sp_acl_ctcam_chunk cchunk;
 172 };
 173
 174 struct mlxsw_sp_acl_atcam_entry {
 175         struct rhash_head ht_node;
 176         struct list_head list; /* Member in entries_list */
 177         struct mlxsw_sp_acl_atcam_entry_ht_key ht_key;
 178         char enc_key[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN]; /* Encoded key,
 179                                                             * minus delta bits.
 180                                                             */
 181         struct {
 182                 u16 start;
 183                 u8 mask;
 184                 u8 value;
 185         } delta_info;
 186         struct mlxsw_sp_acl_ctcam_entry centry;
 187         struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
 188         struct mlxsw_sp_acl_erp_mask *erp_mask;
 189 };
 190
 191 static inline struct mlxsw_sp_acl_atcam_region *
 192 mlxsw_sp_acl_tcam_cregion_aregion(struct mlxsw_sp_acl_ctcam_region *cregion)
 193 {
 194         return container_of(cregion, struct mlxsw_sp_acl_atcam_region, cregion);
 195 }
 196
 197 static inline struct mlxsw_sp_acl_atcam_entry *
 198 mlxsw_sp_acl_tcam_centry_aentry(struct mlxsw_sp_acl_ctcam_entry *centry)
 199 {
 200         return container_of(centry, struct mlxsw_sp_acl_atcam_entry, centry);
 201 }
 202
 203 int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
 204                                         u16 region_id);
 205 int
 206 mlxsw_sp_acl_atcam_region_init(struct mlxsw_sp *mlxsw_sp,
 207                                struct mlxsw_sp_acl_atcam *atcam,
 208                                struct mlxsw_sp_acl_atcam_region *aregion,
 209                                struct mlxsw_sp_acl_tcam_region *region,
 210                                const struct mlxsw_sp_acl_ctcam_region_ops *ops);
 211 void mlxsw_sp_acl_atcam_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
 212 void mlxsw_sp_acl_atcam_chunk_init(struct mlxsw_sp_acl_atcam_region *aregion,
 213                                    struct mlxsw_sp_acl_atcam_chunk *achunk,
 214                                    unsigned int priority);
 215 void mlxsw_sp_acl_atcam_chunk_fini(struct mlxsw_sp_acl_atcam_chunk *achunk);
 216 int mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
 217                                  struct mlxsw_sp_acl_atcam_region *aregion,
 218                                  struct mlxsw_sp_acl_atcam_chunk *achunk,
 219                                  struct mlxsw_sp_acl_atcam_entry *aentry,
 220                                  struct mlxsw_sp_acl_rule_info *rulei);
 221 void mlxsw_sp_acl_atcam_entry_del(struct mlxsw_sp *mlxsw_sp,
 222                                   struct mlxsw_sp_acl_atcam_region *aregion,
 223                                   struct mlxsw_sp_acl_atcam_chunk *achunk,
 224                                   struct mlxsw_sp_acl_atcam_entry *aentry);
 225 int mlxsw_sp_acl_atcam_entry_action_replace(struct mlxsw_sp *mlxsw_sp,
 226                                             struct mlxsw_sp_acl_atcam_region *aregion,
 227                                             struct mlxsw_sp_acl_atcam_entry *aentry,
 228                                             struct mlxsw_sp_acl_rule_info *rulei);
 229 int mlxsw_sp_acl_atcam_init(struct mlxsw_sp *mlxsw_sp,
 230                             struct mlxsw_sp_acl_atcam *atcam);
 231 void mlxsw_sp_acl_atcam_fini(struct mlxsw_sp *mlxsw_sp,
 232                              struct mlxsw_sp_acl_atcam *atcam);
 233
 234 struct mlxsw_sp_acl_erp_delta;
 235
 236 u16 mlxsw_sp_acl_erp_delta_start(const struct mlxsw_sp_acl_erp_delta *delta);
 237 u8 mlxsw_sp_acl_erp_delta_mask(const struct mlxsw_sp_acl_erp_delta *delta);
 238 u8 mlxsw_sp_acl_erp_delta_value(const struct mlxsw_sp_acl_erp_delta *delta,
 239                                 const char *enc_key);
 240 void mlxsw_sp_acl_erp_delta_clear(const struct mlxsw_sp_acl_erp_delta *delta,
 241                                   const char *enc_key);
 242
 243 struct mlxsw_sp_acl_erp_mask;
 244
 245 bool
 246 mlxsw_sp_acl_erp_mask_is_ctcam(const struct mlxsw_sp_acl_erp_mask *erp_mask);
 247 u8 mlxsw_sp_acl_erp_mask_erp_id(const struct mlxsw_sp_acl_erp_mask *erp_mask);
 248 const struct mlxsw_sp_acl_erp_delta *
 249 mlxsw_sp_acl_erp_delta(const struct mlxsw_sp_acl_erp_mask *erp_mask);
 250 struct mlxsw_sp_acl_erp_mask *
 251 mlxsw_sp_acl_erp_mask_get(struct mlxsw_sp_acl_atcam_region *aregion,
 252                           const char *mask, bool ctcam);
 253 void mlxsw_sp_acl_erp_mask_put(struct mlxsw_sp_acl_atcam_region *aregion,
 254                                struct mlxsw_sp_acl_erp_mask *erp_mask);
 255 int mlxsw_sp_acl_erp_bf_insert(struct mlxsw_sp *mlxsw_sp,
 256                                struct mlxsw_sp_acl_atcam_region *aregion,
 257                                struct mlxsw_sp_acl_erp_mask *erp_mask,
 258                                struct mlxsw_sp_acl_atcam_entry *aentry);
 259 void mlxsw_sp_acl_erp_bf_remove(struct mlxsw_sp *mlxsw_sp,
 260                                 struct mlxsw_sp_acl_atcam_region *aregion,
 261                                 struct mlxsw_sp_acl_erp_mask *erp_mask,
 262                                 struct mlxsw_sp_acl_atcam_entry *aentry);
 263 int mlxsw_sp_acl_erp_region_init(struct mlxsw_sp_acl_atcam_region *aregion);
 264 void mlxsw_sp_acl_erp_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
 265 int mlxsw_sp_acl_erps_init(struct mlxsw_sp *mlxsw_sp,
 266                            struct mlxsw_sp_acl_atcam *atcam);
 267 void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp,
 268                             struct mlxsw_sp_acl_atcam *atcam);
 269
 270 struct mlxsw_sp_acl_bf;
 271
 272 int
 273 mlxsw_sp_acl_bf_entry_add(struct mlxsw_sp *mlxsw_sp,
 274                           struct mlxsw_sp_acl_bf *bf,
 275                           struct mlxsw_sp_acl_atcam_region *aregion,
 276                           unsigned int erp_bank,
 277                           struct mlxsw_sp_acl_atcam_entry *aentry);
 278 void
 279 mlxsw_sp_acl_bf_entry_del(struct mlxsw_sp *mlxsw_sp,
 280                           struct mlxsw_sp_acl_bf *bf,
 281                           struct mlxsw_sp_acl_atcam_region *aregion,
 282                           unsigned int erp_bank,
 283                           struct mlxsw_sp_acl_atcam_entry *aentry);
 284 struct mlxsw_sp_acl_bf *
 285 mlxsw_sp_acl_bf_init(struct mlxsw_sp *mlxsw_sp, unsigned int num_erp_banks);
 286 void mlxsw_sp_acl_bf_fini(struct mlxsw_sp_acl_bf *bf);
 287
 288 #endif