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_activity_get)(struct mlxsw_sp *mlxsw_sp, void *rule_priv,
  52                                  bool *activity);
  53 };
  54
  55 const struct mlxsw_sp_acl_profile_ops *
  56 mlxsw_sp_acl_tcam_profile_ops(struct mlxsw_sp *mlxsw_sp,
  57                               enum mlxsw_sp_acl_profile profile);
  58
  59 #define MLXSW_SP_ACL_TCAM_REGION_BASE_COUNT 16
  60 #define MLXSW_SP_ACL_TCAM_REGION_RESIZE_STEP 16
  61
  62 #define MLXSW_SP_ACL_TCAM_CATCHALL_PRIO (~0U)
  63
  64 #define MLXSW_SP_ACL_TCAM_MASK_LEN \
  65         (MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN * BITS_PER_BYTE)
  66
  67 struct mlxsw_sp_acl_tcam_group;
  68
  69 struct mlxsw_sp_acl_tcam_region {
  70         struct list_head list; /* Member of a TCAM group */
  71         struct list_head chunk_list; /* List of chunks under this region */
  72         struct mlxsw_sp_acl_tcam_group *group;
  73         enum mlxsw_reg_ptar_key_type key_type;
  74         u16 id; /* ACL ID and region ID - they are same */
  75         char tcam_region_info[MLXSW_REG_PXXX_TCAM_REGION_INFO_LEN];
  76         struct mlxsw_afk_key_info *key_info;
  77         struct mlxsw_sp *mlxsw_sp;
  78         unsigned long priv[0];
  79         /* priv has to be always the last item */
  80 };
  81
  82 struct mlxsw_sp_acl_ctcam_region {
  83         struct parman *parman;
  84         const struct mlxsw_sp_acl_ctcam_region_ops *ops;
  85         struct mlxsw_sp_acl_tcam_region *region;
  86 };
  87
  88 struct mlxsw_sp_acl_ctcam_chunk {
  89         struct parman_prio parman_prio;
  90 };
  91
  92 struct mlxsw_sp_acl_ctcam_entry {
  93         struct parman_item parman_item;
  94 };
  95
  96 struct mlxsw_sp_acl_ctcam_region_ops {
  97         int (*entry_insert)(struct mlxsw_sp_acl_ctcam_region *cregion,
  98                             struct mlxsw_sp_acl_ctcam_entry *centry,
  99                             const char *mask);
 100         void (*entry_remove)(struct mlxsw_sp_acl_ctcam_region *cregion,
 101                              struct mlxsw_sp_acl_ctcam_entry *centry);
 102 };
 103
 104 int
 105 mlxsw_sp_acl_ctcam_region_init(struct mlxsw_sp *mlxsw_sp,
 106                                struct mlxsw_sp_acl_ctcam_region *cregion,
 107                                struct mlxsw_sp_acl_tcam_region *region,
 108                                const struct mlxsw_sp_acl_ctcam_region_ops *ops);
 109 void mlxsw_sp_acl_ctcam_region_fini(struct mlxsw_sp_acl_ctcam_region *cregion);
 110 void mlxsw_sp_acl_ctcam_chunk_init(struct mlxsw_sp_acl_ctcam_region *cregion,
 111                                    struct mlxsw_sp_acl_ctcam_chunk *cchunk,
 112                                    unsigned int priority);
 113 void mlxsw_sp_acl_ctcam_chunk_fini(struct mlxsw_sp_acl_ctcam_chunk *cchunk);
 114 int mlxsw_sp_acl_ctcam_entry_add(struct mlxsw_sp *mlxsw_sp,
 115                                  struct mlxsw_sp_acl_ctcam_region *cregion,
 116                                  struct mlxsw_sp_acl_ctcam_chunk *cchunk,
 117                                  struct mlxsw_sp_acl_ctcam_entry *centry,
 118                                  struct mlxsw_sp_acl_rule_info *rulei,
 119                                  bool fillup_priority);
 120 void mlxsw_sp_acl_ctcam_entry_del(struct mlxsw_sp *mlxsw_sp,
 121                                   struct mlxsw_sp_acl_ctcam_region *cregion,
 122                                   struct mlxsw_sp_acl_ctcam_chunk *cchunk,
 123                                   struct mlxsw_sp_acl_ctcam_entry *centry);
 124 static inline unsigned int
 125 mlxsw_sp_acl_ctcam_entry_offset(struct mlxsw_sp_acl_ctcam_entry *centry)
 126 {
 127         return centry->parman_item.index;
 128 }
 129
 130 enum mlxsw_sp_acl_atcam_region_type {
 131         MLXSW_SP_ACL_ATCAM_REGION_TYPE_2KB,
 132         MLXSW_SP_ACL_ATCAM_REGION_TYPE_4KB,
 133         MLXSW_SP_ACL_ATCAM_REGION_TYPE_8KB,
 134         MLXSW_SP_ACL_ATCAM_REGION_TYPE_12KB,
 135         __MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX,
 136 };
 137
 138 #define MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX \
 139         (__MLXSW_SP_ACL_ATCAM_REGION_TYPE_MAX - 1)
 140
 141 struct mlxsw_sp_acl_atcam {
 142         struct mlxsw_sp_acl_erp_core *erp_core;
 143 };
 144
 145 struct mlxsw_sp_acl_atcam_region {
 146         struct rhashtable entries_ht; /* A-TCAM only */
 147         struct mlxsw_sp_acl_ctcam_region cregion;
 148         const struct mlxsw_sp_acl_atcam_region_ops *ops;
 149         struct mlxsw_sp_acl_tcam_region *region;
 150         struct mlxsw_sp_acl_atcam *atcam;
 151         enum mlxsw_sp_acl_atcam_region_type type;
 152         struct mlxsw_sp_acl_erp_table *erp_table;
 153         void *priv;
 154 };
 155
 156 struct mlxsw_sp_acl_atcam_entry_ht_key {
 157         char enc_key[MLXSW_REG_PTCEX_FLEX_KEY_BLOCKS_LEN]; /* Encoded key */
 158         u8 erp_id;
 159 };
 160
 161 struct mlxsw_sp_acl_atcam_chunk {
 162         struct mlxsw_sp_acl_ctcam_chunk cchunk;
 163 };
 164
 165 struct mlxsw_sp_acl_atcam_entry {
 166         struct rhash_head ht_node;
 167         struct mlxsw_sp_acl_atcam_entry_ht_key ht_key;
 168         struct mlxsw_sp_acl_ctcam_entry centry;
 169         struct mlxsw_sp_acl_atcam_lkey_id *lkey_id;
 170         struct mlxsw_sp_acl_erp *erp;
 171 };
 172
 173 static inline struct mlxsw_sp_acl_atcam_region *
 174 mlxsw_sp_acl_tcam_cregion_aregion(struct mlxsw_sp_acl_ctcam_region *cregion)
 175 {
 176         return container_of(cregion, struct mlxsw_sp_acl_atcam_region, cregion);
 177 }
 178
 179 static inline struct mlxsw_sp_acl_atcam_entry *
 180 mlxsw_sp_acl_tcam_centry_aentry(struct mlxsw_sp_acl_ctcam_entry *centry)
 181 {
 182         return container_of(centry, struct mlxsw_sp_acl_atcam_entry, centry);
 183 }
 184
 185 int mlxsw_sp_acl_atcam_region_associate(struct mlxsw_sp *mlxsw_sp,
 186                                         u16 region_id);
 187 int
 188 mlxsw_sp_acl_atcam_region_init(struct mlxsw_sp *mlxsw_sp,
 189                                struct mlxsw_sp_acl_atcam *atcam,
 190                                struct mlxsw_sp_acl_atcam_region *aregion,
 191                                struct mlxsw_sp_acl_tcam_region *region,
 192                                const struct mlxsw_sp_acl_ctcam_region_ops *ops);
 193 void mlxsw_sp_acl_atcam_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
 194 void mlxsw_sp_acl_atcam_chunk_init(struct mlxsw_sp_acl_atcam_region *aregion,
 195                                    struct mlxsw_sp_acl_atcam_chunk *achunk,
 196                                    unsigned int priority);
 197 void mlxsw_sp_acl_atcam_chunk_fini(struct mlxsw_sp_acl_atcam_chunk *achunk);
 198 int mlxsw_sp_acl_atcam_entry_add(struct mlxsw_sp *mlxsw_sp,
 199                                  struct mlxsw_sp_acl_atcam_region *aregion,
 200                                  struct mlxsw_sp_acl_atcam_chunk *achunk,
 201                                  struct mlxsw_sp_acl_atcam_entry *aentry,
 202                                  struct mlxsw_sp_acl_rule_info *rulei);
 203 void mlxsw_sp_acl_atcam_entry_del(struct mlxsw_sp *mlxsw_sp,
 204                                   struct mlxsw_sp_acl_atcam_region *aregion,
 205                                   struct mlxsw_sp_acl_atcam_chunk *achunk,
 206                                   struct mlxsw_sp_acl_atcam_entry *aentry);
 207 int mlxsw_sp_acl_atcam_init(struct mlxsw_sp *mlxsw_sp,
 208                             struct mlxsw_sp_acl_atcam *atcam);
 209 void mlxsw_sp_acl_atcam_fini(struct mlxsw_sp *mlxsw_sp,
 210                              struct mlxsw_sp_acl_atcam *atcam);
 211
 212 struct mlxsw_sp_acl_erp;
 213
 214 bool mlxsw_sp_acl_erp_is_ctcam_erp(const struct mlxsw_sp_acl_erp *erp);
 215 u8 mlxsw_sp_acl_erp_id(const struct mlxsw_sp_acl_erp *erp);
 216 struct mlxsw_sp_acl_erp *
 217 mlxsw_sp_acl_erp_get(struct mlxsw_sp_acl_atcam_region *aregion,
 218                      const char *mask, bool ctcam);
 219 void mlxsw_sp_acl_erp_put(struct mlxsw_sp_acl_atcam_region *aregion,
 220                           struct mlxsw_sp_acl_erp *erp);
 221 int mlxsw_sp_acl_erp_region_init(struct mlxsw_sp_acl_atcam_region *aregion);
 222 void mlxsw_sp_acl_erp_region_fini(struct mlxsw_sp_acl_atcam_region *aregion);
 223 int mlxsw_sp_acl_erps_init(struct mlxsw_sp *mlxsw_sp,
 224                            struct mlxsw_sp_acl_atcam *atcam);
 225 void mlxsw_sp_acl_erps_fini(struct mlxsw_sp *mlxsw_sp,
 226                             struct mlxsw_sp_acl_atcam *atcam);
 227
 228 #endif