drivers/net/ethernet/mellanox/mlxsw/spectrum_acl.c

   1 // SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0
   2 /* Copyright (c) 2017-2018 Mellanox Technologies. All rights reserved */
   3
   4 #include <linux/kernel.h>
   5 #include <linux/slab.h>
   6 #include <linux/errno.h>
   7 #include <linux/list.h>
   8 #include <linux/string.h>
   9 #include <linux/rhashtable.h>
  10 #include <linux/netdevice.h>
  11 #include <net/net_namespace.h>
  12 #include <net/tc_act/tc_vlan.h>
  13
  14 #include "reg.h"
  15 #include "core.h"
  16 #include "resources.h"
  17 #include "spectrum.h"
  18 #include "core_acl_flex_keys.h"
  19 #include "core_acl_flex_actions.h"
  20 #include "spectrum_acl_tcam.h"
  21
  22 struct mlxsw_sp_acl {
  23         struct mlxsw_sp *mlxsw_sp;
  24         struct mlxsw_afk *afk;
  25         struct mlxsw_sp_fid *dummy_fid;
  26         struct rhashtable ruleset_ht;
  27         struct list_head rules;
  28         struct {
  29                 struct delayed_work dw;
  30                 unsigned long interval; /* ms */
  31 #define MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS 1000
  32         } rule_activity_update;
  33         struct mlxsw_sp_acl_tcam tcam;
  34 };
  35
  36 struct mlxsw_afk *mlxsw_sp_acl_afk(struct mlxsw_sp_acl *acl)
  37 {
  38         return acl->afk;
  39 }
  40
  41 struct mlxsw_sp_acl_block_binding {
  42         struct list_head list;
  43         struct net_device *dev;
  44         struct mlxsw_sp_port *mlxsw_sp_port;
  45         bool ingress;
  46 };
  47
  48 struct mlxsw_sp_acl_ruleset_ht_key {
  49         struct mlxsw_sp_acl_block *block;
  50         u32 chain_index;
  51         const struct mlxsw_sp_acl_profile_ops *ops;
  52 };
  53
  54 struct mlxsw_sp_acl_ruleset {
  55         struct rhash_head ht_node; /* Member of acl HT */
  56         struct mlxsw_sp_acl_ruleset_ht_key ht_key;
  57         struct rhashtable rule_ht;
  58         unsigned int ref_count;
  59         unsigned long priv[0];
  60         /* priv has to be always the last item */
  61 };
  62
  63 struct mlxsw_sp_acl_rule {
  64         struct rhash_head ht_node; /* Member of rule HT */
  65         struct list_head list;
  66         unsigned long cookie; /* HT key */
  67         struct mlxsw_sp_acl_ruleset *ruleset;
  68         struct mlxsw_sp_acl_rule_info *rulei;
  69         u64 last_used;
  70         u64 last_packets;
  71         u64 last_bytes;
  72         unsigned long priv[0];
  73         /* priv has to be always the last item */
  74 };
  75
  76 static const struct rhashtable_params mlxsw_sp_acl_ruleset_ht_params = {
  77         .key_len = sizeof(struct mlxsw_sp_acl_ruleset_ht_key),
  78         .key_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_key),
  79         .head_offset = offsetof(struct mlxsw_sp_acl_ruleset, ht_node),
  80         .automatic_shrinking = true,
  81 };
  82
  83 static const struct rhashtable_params mlxsw_sp_acl_rule_ht_params = {
  84         .key_len = sizeof(unsigned long),
  85         .key_offset = offsetof(struct mlxsw_sp_acl_rule, cookie),
  86         .head_offset = offsetof(struct mlxsw_sp_acl_rule, ht_node),
  87         .automatic_shrinking = true,
  88 };
  89
  90 struct mlxsw_sp_fid *mlxsw_sp_acl_dummy_fid(struct mlxsw_sp *mlxsw_sp)
  91 {
  92         return mlxsw_sp->acl->dummy_fid;
  93 }
  94
  95 struct mlxsw_sp *mlxsw_sp_acl_block_mlxsw_sp(struct mlxsw_sp_acl_block *block)
  96 {
  97         return block->mlxsw_sp;
  98 }
  99
 100 unsigned int mlxsw_sp_acl_block_rule_count(struct mlxsw_sp_acl_block *block)
 101 {
 102         return block ? block->rule_count : 0;
 103 }
 104
 105 void mlxsw_sp_acl_block_disable_inc(struct mlxsw_sp_acl_block *block)
 106 {
 107         if (block)
 108                 block->disable_count++;
 109 }
 110
 111 void mlxsw_sp_acl_block_disable_dec(struct mlxsw_sp_acl_block *block)
 112 {
 113         if (block)
 114                 block->disable_count--;
 115 }
 116
 117 bool mlxsw_sp_acl_block_disabled(struct mlxsw_sp_acl_block *block)
 118 {
 119         return block->disable_count;
 120 }
 121
 122 bool mlxsw_sp_acl_block_is_egress_bound(struct mlxsw_sp_acl_block *block)
 123 {
 124         struct mlxsw_sp_acl_block_binding *binding;
 125
 126         list_for_each_entry(binding, &block->binding_list, list) {
 127                 if (!binding->ingress)
 128                         return true;
 129         }
 130         return false;
 131 }
 132
 133 static bool
 134 mlxsw_sp_acl_ruleset_is_singular(const struct mlxsw_sp_acl_ruleset *ruleset)
 135 {
 136         /* We hold a reference on ruleset ourselves */
 137         return ruleset->ref_count == 2;
 138 }
 139
 140 static int
 141 mlxsw_sp_acl_ruleset_bind(struct mlxsw_sp *mlxsw_sp,
 142                           struct mlxsw_sp_acl_block *block,
 143                           struct mlxsw_sp_acl_block_binding *binding)
 144 {
 145         struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero;
 146         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 147
 148         return ops->ruleset_bind(mlxsw_sp, ruleset->priv,
 149                                  binding->mlxsw_sp_port, binding->ingress);
 150 }
 151
 152 static void
 153 mlxsw_sp_acl_ruleset_unbind(struct mlxsw_sp *mlxsw_sp,
 154                             struct mlxsw_sp_acl_block *block,
 155                             struct mlxsw_sp_acl_block_binding *binding)
 156 {
 157         struct mlxsw_sp_acl_ruleset *ruleset = block->ruleset_zero;
 158         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 159
 160         ops->ruleset_unbind(mlxsw_sp, ruleset->priv,
 161                             binding->mlxsw_sp_port, binding->ingress);
 162 }
 163
 164 static bool mlxsw_sp_acl_ruleset_block_bound(struct mlxsw_sp_acl_block *block)
 165 {
 166         return block->ruleset_zero;
 167 }
 168
 169 static int
 170 mlxsw_sp_acl_ruleset_block_bind(struct mlxsw_sp *mlxsw_sp,
 171                                 struct mlxsw_sp_acl_ruleset *ruleset,
 172                                 struct mlxsw_sp_acl_block *block)
 173 {
 174         struct mlxsw_sp_acl_block_binding *binding;
 175         int err;
 176
 177         block->ruleset_zero = ruleset;
 178         list_for_each_entry(binding, &block->binding_list, list) {
 179                 err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding);
 180                 if (err)
 181                         goto rollback;
 182         }
 183         return 0;
 184
 185 rollback:
 186         list_for_each_entry_continue_reverse(binding, &block->binding_list,
 187                                              list)
 188                 mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
 189         block->ruleset_zero = NULL;
 190
 191         return err;
 192 }
 193
 194 static void
 195 mlxsw_sp_acl_ruleset_block_unbind(struct mlxsw_sp *mlxsw_sp,
 196                                   struct mlxsw_sp_acl_ruleset *ruleset,
 197                                   struct mlxsw_sp_acl_block *block)
 198 {
 199         struct mlxsw_sp_acl_block_binding *binding;
 200
 201         list_for_each_entry(binding, &block->binding_list, list)
 202                 mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
 203         block->ruleset_zero = NULL;
 204 }
 205
 206 struct mlxsw_sp_acl_block *mlxsw_sp_acl_block_create(struct mlxsw_sp *mlxsw_sp,
 207                                                      struct net *net)
 208 {
 209         struct mlxsw_sp_acl_block *block;
 210
 211         block = kzalloc(sizeof(*block), GFP_KERNEL);
 212         if (!block)
 213                 return NULL;
 214         INIT_LIST_HEAD(&block->binding_list);
 215         block->mlxsw_sp = mlxsw_sp;
 216         block->net = net;
 217         return block;
 218 }
 219
 220 void mlxsw_sp_acl_block_destroy(struct mlxsw_sp_acl_block *block)
 221 {
 222         WARN_ON(!list_empty(&block->binding_list));
 223         kfree(block);
 224 }
 225
 226 static struct mlxsw_sp_acl_block_binding *
 227 mlxsw_sp_acl_block_lookup(struct mlxsw_sp_acl_block *block,
 228                           struct mlxsw_sp_port *mlxsw_sp_port, bool ingress)
 229 {
 230         struct mlxsw_sp_acl_block_binding *binding;
 231
 232         list_for_each_entry(binding, &block->binding_list, list)
 233                 if (binding->mlxsw_sp_port == mlxsw_sp_port &&
 234                     binding->ingress == ingress)
 235                         return binding;
 236         return NULL;
 237 }
 238
 239 int mlxsw_sp_acl_block_bind(struct mlxsw_sp *mlxsw_sp,
 240                             struct mlxsw_sp_acl_block *block,
 241                             struct mlxsw_sp_port *mlxsw_sp_port,
 242                             bool ingress)
 243 {
 244         struct mlxsw_sp_acl_block_binding *binding;
 245         int err;
 246
 247         if (WARN_ON(mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress)))
 248                 return -EEXIST;
 249
 250         binding = kzalloc(sizeof(*binding), GFP_KERNEL);
 251         if (!binding)
 252                 return -ENOMEM;
 253         binding->mlxsw_sp_port = mlxsw_sp_port;
 254         binding->ingress = ingress;
 255
 256         if (mlxsw_sp_acl_ruleset_block_bound(block)) {
 257                 err = mlxsw_sp_acl_ruleset_bind(mlxsw_sp, block, binding);
 258                 if (err)
 259                         goto err_ruleset_bind;
 260         }
 261
 262         list_add(&binding->list, &block->binding_list);
 263         return 0;
 264
 265 err_ruleset_bind:
 266         kfree(binding);
 267         return err;
 268 }
 269
 270 int mlxsw_sp_acl_block_unbind(struct mlxsw_sp *mlxsw_sp,
 271                               struct mlxsw_sp_acl_block *block,
 272                               struct mlxsw_sp_port *mlxsw_sp_port,
 273                               bool ingress)
 274 {
 275         struct mlxsw_sp_acl_block_binding *binding;
 276
 277         binding = mlxsw_sp_acl_block_lookup(block, mlxsw_sp_port, ingress);
 278         if (!binding)
 279                 return -ENOENT;
 280
 281         list_del(&binding->list);
 282
 283         if (mlxsw_sp_acl_ruleset_block_bound(block))
 284                 mlxsw_sp_acl_ruleset_unbind(mlxsw_sp, block, binding);
 285
 286         kfree(binding);
 287         return 0;
 288 }
 289
 290 static struct mlxsw_sp_acl_ruleset *
 291 mlxsw_sp_acl_ruleset_create(struct mlxsw_sp *mlxsw_sp,
 292                             struct mlxsw_sp_acl_block *block, u32 chain_index,
 293                             const struct mlxsw_sp_acl_profile_ops *ops,
 294                             struct mlxsw_afk_element_usage *tmplt_elusage)
 295 {
 296         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 297         struct mlxsw_sp_acl_ruleset *ruleset;
 298         size_t alloc_size;
 299         int err;
 300
 301         alloc_size = sizeof(*ruleset) + ops->ruleset_priv_size;
 302         ruleset = kzalloc(alloc_size, GFP_KERNEL);
 303         if (!ruleset)
 304                 return ERR_PTR(-ENOMEM);
 305         ruleset->ref_count = 1;
 306         ruleset->ht_key.block = block;
 307         ruleset->ht_key.chain_index = chain_index;
 308         ruleset->ht_key.ops = ops;
 309
 310         err = rhashtable_init(&ruleset->rule_ht, &mlxsw_sp_acl_rule_ht_params);
 311         if (err)
 312                 goto err_rhashtable_init;
 313
 314         err = ops->ruleset_add(mlxsw_sp, &acl->tcam, ruleset->priv,
 315                                tmplt_elusage);
 316         if (err)
 317                 goto err_ops_ruleset_add;
 318
 319         err = rhashtable_insert_fast(&acl->ruleset_ht, &ruleset->ht_node,
 320                                      mlxsw_sp_acl_ruleset_ht_params);
 321         if (err)
 322                 goto err_ht_insert;
 323
 324         return ruleset;
 325
 326 err_ht_insert:
 327         ops->ruleset_del(mlxsw_sp, ruleset->priv);
 328 err_ops_ruleset_add:
 329         rhashtable_destroy(&ruleset->rule_ht);
 330 err_rhashtable_init:
 331         kfree(ruleset);
 332         return ERR_PTR(err);
 333 }
 334
 335 static void mlxsw_sp_acl_ruleset_destroy(struct mlxsw_sp *mlxsw_sp,
 336                                          struct mlxsw_sp_acl_ruleset *ruleset)
 337 {
 338         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 339         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 340
 341         rhashtable_remove_fast(&acl->ruleset_ht, &ruleset->ht_node,
 342                                mlxsw_sp_acl_ruleset_ht_params);
 343         ops->ruleset_del(mlxsw_sp, ruleset->priv);
 344         rhashtable_destroy(&ruleset->rule_ht);
 345         kfree(ruleset);
 346 }
 347
 348 static void mlxsw_sp_acl_ruleset_ref_inc(struct mlxsw_sp_acl_ruleset *ruleset)
 349 {
 350         ruleset->ref_count++;
 351 }
 352
 353 static void mlxsw_sp_acl_ruleset_ref_dec(struct mlxsw_sp *mlxsw_sp,
 354                                          struct mlxsw_sp_acl_ruleset *ruleset)
 355 {
 356         if (--ruleset->ref_count)
 357                 return;
 358         mlxsw_sp_acl_ruleset_destroy(mlxsw_sp, ruleset);
 359 }
 360
 361 static struct mlxsw_sp_acl_ruleset *
 362 __mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp_acl *acl,
 363                               struct mlxsw_sp_acl_block *block, u32 chain_index,
 364                               const struct mlxsw_sp_acl_profile_ops *ops)
 365 {
 366         struct mlxsw_sp_acl_ruleset_ht_key ht_key;
 367
 368         memset(&ht_key, 0, sizeof(ht_key));
 369         ht_key.block = block;
 370         ht_key.chain_index = chain_index;
 371         ht_key.ops = ops;
 372         return rhashtable_lookup_fast(&acl->ruleset_ht, &ht_key,
 373                                       mlxsw_sp_acl_ruleset_ht_params);
 374 }
 375
 376 struct mlxsw_sp_acl_ruleset *
 377 mlxsw_sp_acl_ruleset_lookup(struct mlxsw_sp *mlxsw_sp,
 378                             struct mlxsw_sp_acl_block *block, u32 chain_index,
 379                             enum mlxsw_sp_acl_profile profile)
 380 {
 381         const struct mlxsw_sp_acl_profile_ops *ops;
 382         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 383         struct mlxsw_sp_acl_ruleset *ruleset;
 384
 385         ops = mlxsw_sp_acl_tcam_profile_ops(mlxsw_sp, profile);
 386         if (!ops)
 387                 return ERR_PTR(-EINVAL);
 388         ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops);
 389         if (!ruleset)
 390                 return ERR_PTR(-ENOENT);
 391         return ruleset;
 392 }
 393
 394 struct mlxsw_sp_acl_ruleset *
 395 mlxsw_sp_acl_ruleset_get(struct mlxsw_sp *mlxsw_sp,
 396                          struct mlxsw_sp_acl_block *block, u32 chain_index,
 397                          enum mlxsw_sp_acl_profile profile,
 398                          struct mlxsw_afk_element_usage *tmplt_elusage)
 399 {
 400         const struct mlxsw_sp_acl_profile_ops *ops;
 401         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 402         struct mlxsw_sp_acl_ruleset *ruleset;
 403
 404         ops = mlxsw_sp_acl_tcam_profile_ops(mlxsw_sp, profile);
 405         if (!ops)
 406                 return ERR_PTR(-EINVAL);
 407
 408         ruleset = __mlxsw_sp_acl_ruleset_lookup(acl, block, chain_index, ops);
 409         if (ruleset) {
 410                 mlxsw_sp_acl_ruleset_ref_inc(ruleset);
 411                 return ruleset;
 412         }
 413         return mlxsw_sp_acl_ruleset_create(mlxsw_sp, block, chain_index, ops,
 414                                            tmplt_elusage);
 415 }
 416
 417 void mlxsw_sp_acl_ruleset_put(struct mlxsw_sp *mlxsw_sp,
 418                               struct mlxsw_sp_acl_ruleset *ruleset)
 419 {
 420         mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
 421 }
 422
 423 u16 mlxsw_sp_acl_ruleset_group_id(struct mlxsw_sp_acl_ruleset *ruleset)
 424 {
 425         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 426
 427         return ops->ruleset_group_id(ruleset->priv);
 428 }
 429
 430 struct mlxsw_sp_acl_rule_info *
 431 mlxsw_sp_acl_rulei_create(struct mlxsw_sp_acl *acl,
 432                           struct mlxsw_afa_block *afa_block)
 433 {
 434         struct mlxsw_sp_acl_rule_info *rulei;
 435         int err;
 436
 437         rulei = kzalloc(sizeof(*rulei), GFP_KERNEL);
 438         if (!rulei)
 439                 return NULL;
 440
 441         if (afa_block) {
 442                 rulei->act_block = afa_block;
 443                 return rulei;
 444         }
 445
 446         rulei->act_block = mlxsw_afa_block_create(acl->mlxsw_sp->afa);
 447         if (IS_ERR(rulei->act_block)) {
 448                 err = PTR_ERR(rulei->act_block);
 449                 goto err_afa_block_create;
 450         }
 451         rulei->action_created = 1;
 452         return rulei;
 453
 454 err_afa_block_create:
 455         kfree(rulei);
 456         return ERR_PTR(err);
 457 }
 458
 459 void mlxsw_sp_acl_rulei_destroy(struct mlxsw_sp_acl_rule_info *rulei)
 460 {
 461         if (rulei->action_created)
 462                 mlxsw_afa_block_destroy(rulei->act_block);
 463         kfree(rulei);
 464 }
 465
 466 int mlxsw_sp_acl_rulei_commit(struct mlxsw_sp_acl_rule_info *rulei)
 467 {
 468         return mlxsw_afa_block_commit(rulei->act_block);
 469 }
 470
 471 void mlxsw_sp_acl_rulei_priority(struct mlxsw_sp_acl_rule_info *rulei,
 472                                  unsigned int priority)
 473 {
 474         rulei->priority = priority;
 475 }
 476
 477 void mlxsw_sp_acl_rulei_keymask_u32(struct mlxsw_sp_acl_rule_info *rulei,
 478                                     enum mlxsw_afk_element element,
 479                                     u32 key_value, u32 mask_value)
 480 {
 481         mlxsw_afk_values_add_u32(&rulei->values, element,
 482                                  key_value, mask_value);
 483 }
 484
 485 void mlxsw_sp_acl_rulei_keymask_buf(struct mlxsw_sp_acl_rule_info *rulei,
 486                                     enum mlxsw_afk_element element,
 487                                     const char *key_value,
 488                                     const char *mask_value, unsigned int len)
 489 {
 490         mlxsw_afk_values_add_buf(&rulei->values, element,
 491                                  key_value, mask_value, len);
 492 }
 493
 494 int mlxsw_sp_acl_rulei_act_continue(struct mlxsw_sp_acl_rule_info *rulei)
 495 {
 496         return mlxsw_afa_block_continue(rulei->act_block);
 497 }
 498
 499 int mlxsw_sp_acl_rulei_act_jump(struct mlxsw_sp_acl_rule_info *rulei,
 500                                 u16 group_id)
 501 {
 502         return mlxsw_afa_block_jump(rulei->act_block, group_id);
 503 }
 504
 505 int mlxsw_sp_acl_rulei_act_terminate(struct mlxsw_sp_acl_rule_info *rulei)
 506 {
 507         return mlxsw_afa_block_terminate(rulei->act_block);
 508 }
 509
 510 int mlxsw_sp_acl_rulei_act_drop(struct mlxsw_sp_acl_rule_info *rulei)
 511 {
 512         return mlxsw_afa_block_append_drop(rulei->act_block);
 513 }
 514
 515 int mlxsw_sp_acl_rulei_act_trap(struct mlxsw_sp_acl_rule_info *rulei)
 516 {
 517         return mlxsw_afa_block_append_trap(rulei->act_block,
 518                                            MLXSW_TRAP_ID_ACL0);
 519 }
 520
 521 int mlxsw_sp_acl_rulei_act_fwd(struct mlxsw_sp *mlxsw_sp,
 522                                struct mlxsw_sp_acl_rule_info *rulei,
 523                                struct net_device *out_dev,
 524                                struct netlink_ext_ack *extack)
 525 {
 526         struct mlxsw_sp_port *mlxsw_sp_port;
 527         u8 local_port;
 528         bool in_port;
 529
 530         if (out_dev) {
 531                 if (!mlxsw_sp_port_dev_check(out_dev)) {
 532                         NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
 533                         return -EINVAL;
 534                 }
 535                 mlxsw_sp_port = netdev_priv(out_dev);
 536                 if (mlxsw_sp_port->mlxsw_sp != mlxsw_sp) {
 537                         NL_SET_ERR_MSG_MOD(extack, "Invalid output device");
 538                         return -EINVAL;
 539                 }
 540                 local_port = mlxsw_sp_port->local_port;
 541                 in_port = false;
 542         } else {
 543                 /* If out_dev is NULL, the caller wants to
 544                  * set forward to ingress port.
 545                  */
 546                 local_port = 0;
 547                 in_port = true;
 548         }
 549         return mlxsw_afa_block_append_fwd(rulei->act_block,
 550                                           local_port, in_port, extack);
 551 }
 552
 553 int mlxsw_sp_acl_rulei_act_mirror(struct mlxsw_sp *mlxsw_sp,
 554                                   struct mlxsw_sp_acl_rule_info *rulei,
 555                                   struct mlxsw_sp_acl_block *block,
 556                                   struct net_device *out_dev,
 557                                   struct netlink_ext_ack *extack)
 558 {
 559         struct mlxsw_sp_acl_block_binding *binding;
 560         struct mlxsw_sp_port *in_port;
 561
 562         if (!list_is_singular(&block->binding_list)) {
 563                 NL_SET_ERR_MSG_MOD(extack, "Only a single mirror source is allowed");
 564                 return -EOPNOTSUPP;
 565         }
 566         binding = list_first_entry(&block->binding_list,
 567                                    struct mlxsw_sp_acl_block_binding, list);
 568         in_port = binding->mlxsw_sp_port;
 569
 570         return mlxsw_afa_block_append_mirror(rulei->act_block,
 571                                              in_port->local_port,
 572                                              out_dev,
 573                                              binding->ingress,
 574                                              extack);
 575 }
 576
 577 int mlxsw_sp_acl_rulei_act_vlan(struct mlxsw_sp *mlxsw_sp,
 578                                 struct mlxsw_sp_acl_rule_info *rulei,
 579                                 u32 action, u16 vid, u16 proto, u8 prio,
 580                                 struct netlink_ext_ack *extack)
 581 {
 582         u8 ethertype;
 583
 584         if (action == FLOW_ACTION_VLAN_MANGLE) {
 585                 switch (proto) {
 586                 case ETH_P_8021Q:
 587                         ethertype = 0;
 588                         break;
 589                 case ETH_P_8021AD:
 590                         ethertype = 1;
 591                         break;
 592                 default:
 593                         NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN protocol");
 594                         dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN protocol %#04x\n",
 595                                 proto);
 596                         return -EINVAL;
 597                 }
 598
 599                 return mlxsw_afa_block_append_vlan_modify(rulei->act_block,
 600                                                           vid, prio, ethertype,
 601                                                           extack);
 602         } else {
 603                 NL_SET_ERR_MSG_MOD(extack, "Unsupported VLAN action");
 604                 dev_err(mlxsw_sp->bus_info->dev, "Unsupported VLAN action\n");
 605                 return -EINVAL;
 606         }
 607 }
 608
 609 int mlxsw_sp_acl_rulei_act_count(struct mlxsw_sp *mlxsw_sp,
 610                                  struct mlxsw_sp_acl_rule_info *rulei,
 611                                  struct netlink_ext_ack *extack)
 612 {
 613         return mlxsw_afa_block_append_counter(rulei->act_block,
 614                                               &rulei->counter_index, extack);
 615 }
 616
 617 int mlxsw_sp_acl_rulei_act_fid_set(struct mlxsw_sp *mlxsw_sp,
 618                                    struct mlxsw_sp_acl_rule_info *rulei,
 619                                    u16 fid, struct netlink_ext_ack *extack)
 620 {
 621         return mlxsw_afa_block_append_fid_set(rulei->act_block, fid, extack);
 622 }
 623
 624 struct mlxsw_sp_acl_rule *
 625 mlxsw_sp_acl_rule_create(struct mlxsw_sp *mlxsw_sp,
 626                          struct mlxsw_sp_acl_ruleset *ruleset,
 627                          unsigned long cookie,
 628                          struct mlxsw_afa_block *afa_block,
 629                          struct netlink_ext_ack *extack)
 630 {
 631         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 632         struct mlxsw_sp_acl_rule *rule;
 633         int err;
 634
 635         mlxsw_sp_acl_ruleset_ref_inc(ruleset);
 636         rule = kzalloc(sizeof(*rule) + ops->rule_priv_size,
 637                        GFP_KERNEL);
 638         if (!rule) {
 639                 err = -ENOMEM;
 640                 goto err_alloc;
 641         }
 642         rule->cookie = cookie;
 643         rule->ruleset = ruleset;
 644
 645         rule->rulei = mlxsw_sp_acl_rulei_create(mlxsw_sp->acl, afa_block);
 646         if (IS_ERR(rule->rulei)) {
 647                 err = PTR_ERR(rule->rulei);
 648                 goto err_rulei_create;
 649         }
 650
 651         return rule;
 652
 653 err_rulei_create:
 654         kfree(rule);
 655 err_alloc:
 656         mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
 657         return ERR_PTR(err);
 658 }
 659
 660 void mlxsw_sp_acl_rule_destroy(struct mlxsw_sp *mlxsw_sp,
 661                                struct mlxsw_sp_acl_rule *rule)
 662 {
 663         struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 664
 665         mlxsw_sp_acl_rulei_destroy(rule->rulei);
 666         kfree(rule);
 667         mlxsw_sp_acl_ruleset_ref_dec(mlxsw_sp, ruleset);
 668 }
 669
 670 int mlxsw_sp_acl_rule_add(struct mlxsw_sp *mlxsw_sp,
 671                           struct mlxsw_sp_acl_rule *rule)
 672 {
 673         struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 674         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 675         int err;
 676
 677         err = ops->rule_add(mlxsw_sp, ruleset->priv, rule->priv, rule->rulei);
 678         if (err)
 679                 return err;
 680
 681         err = rhashtable_insert_fast(&ruleset->rule_ht, &rule->ht_node,
 682                                      mlxsw_sp_acl_rule_ht_params);
 683         if (err)
 684                 goto err_rhashtable_insert;
 685
 686         if (!ruleset->ht_key.chain_index &&
 687             mlxsw_sp_acl_ruleset_is_singular(ruleset)) {
 688                 /* We only need ruleset with chain index 0, the implicit
 689                  * one, to be directly bound to device. The rest of the
 690                  * rulesets are bound by "Goto action set".
 691                  */
 692                 err = mlxsw_sp_acl_ruleset_block_bind(mlxsw_sp, ruleset,
 693                                                       ruleset->ht_key.block);
 694                 if (err)
 695                         goto err_ruleset_block_bind;
 696         }
 697
 698         list_add_tail(&rule->list, &mlxsw_sp->acl->rules);
 699         ruleset->ht_key.block->rule_count++;
 700         return 0;
 701
 702 err_ruleset_block_bind:
 703         rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
 704                                mlxsw_sp_acl_rule_ht_params);
 705 err_rhashtable_insert:
 706         ops->rule_del(mlxsw_sp, rule->priv);
 707         return err;
 708 }
 709
 710 void mlxsw_sp_acl_rule_del(struct mlxsw_sp *mlxsw_sp,
 711                            struct mlxsw_sp_acl_rule *rule)
 712 {
 713         struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 714         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 715
 716         ruleset->ht_key.block->rule_count--;
 717         list_del(&rule->list);
 718         if (!ruleset->ht_key.chain_index &&
 719             mlxsw_sp_acl_ruleset_is_singular(ruleset))
 720                 mlxsw_sp_acl_ruleset_block_unbind(mlxsw_sp, ruleset,
 721                                                   ruleset->ht_key.block);
 722         rhashtable_remove_fast(&ruleset->rule_ht, &rule->ht_node,
 723                                mlxsw_sp_acl_rule_ht_params);
 724         ops->rule_del(mlxsw_sp, rule->priv);
 725 }
 726
 727 int mlxsw_sp_acl_rule_action_replace(struct mlxsw_sp *mlxsw_sp,
 728                                      struct mlxsw_sp_acl_rule *rule,
 729                                      struct mlxsw_afa_block *afa_block)
 730 {
 731         struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 732         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 733         struct mlxsw_sp_acl_rule_info *rulei;
 734
 735         rulei = mlxsw_sp_acl_rule_rulei(rule);
 736         rulei->act_block = afa_block;
 737
 738         return ops->rule_action_replace(mlxsw_sp, rule->priv, rule->rulei);
 739 }
 740
 741 struct mlxsw_sp_acl_rule *
 742 mlxsw_sp_acl_rule_lookup(struct mlxsw_sp *mlxsw_sp,
 743                          struct mlxsw_sp_acl_ruleset *ruleset,
 744                          unsigned long cookie)
 745 {
 746         return rhashtable_lookup_fast(&ruleset->rule_ht, &cookie,
 747                                        mlxsw_sp_acl_rule_ht_params);
 748 }
 749
 750 struct mlxsw_sp_acl_rule_info *
 751 mlxsw_sp_acl_rule_rulei(struct mlxsw_sp_acl_rule *rule)
 752 {
 753         return rule->rulei;
 754 }
 755
 756 static int mlxsw_sp_acl_rule_activity_update(struct mlxsw_sp *mlxsw_sp,
 757                                              struct mlxsw_sp_acl_rule *rule)
 758 {
 759         struct mlxsw_sp_acl_ruleset *ruleset = rule->ruleset;
 760         const struct mlxsw_sp_acl_profile_ops *ops = ruleset->ht_key.ops;
 761         bool active;
 762         int err;
 763
 764         err = ops->rule_activity_get(mlxsw_sp, rule->priv, &active);
 765         if (err)
 766                 return err;
 767         if (active)
 768                 rule->last_used = jiffies;
 769         return 0;
 770 }
 771
 772 static int mlxsw_sp_acl_rules_activity_update(struct mlxsw_sp_acl *acl)
 773 {
 774         struct mlxsw_sp_acl_rule *rule;
 775         int err;
 776
 777         /* Protect internal structures from changes */
 778         rtnl_lock();
 779         list_for_each_entry(rule, &acl->rules, list) {
 780                 err = mlxsw_sp_acl_rule_activity_update(acl->mlxsw_sp,
 781                                                         rule);
 782                 if (err)
 783                         goto err_rule_update;
 784         }
 785         rtnl_unlock();
 786         return 0;
 787
 788 err_rule_update:
 789         rtnl_unlock();
 790         return err;
 791 }
 792
 793 static void mlxsw_sp_acl_rule_activity_work_schedule(struct mlxsw_sp_acl *acl)
 794 {
 795         unsigned long interval = acl->rule_activity_update.interval;
 796
 797         mlxsw_core_schedule_dw(&acl->rule_activity_update.dw,
 798                                msecs_to_jiffies(interval));
 799 }
 800
 801 static void mlxsw_sp_acl_rule_activity_update_work(struct work_struct *work)
 802 {
 803         struct mlxsw_sp_acl *acl = container_of(work, struct mlxsw_sp_acl,
 804                                                 rule_activity_update.dw.work);
 805         int err;
 806
 807         err = mlxsw_sp_acl_rules_activity_update(acl);
 808         if (err)
 809                 dev_err(acl->mlxsw_sp->bus_info->dev, "Could not update acl activity");
 810
 811         mlxsw_sp_acl_rule_activity_work_schedule(acl);
 812 }
 813
 814 int mlxsw_sp_acl_rule_get_stats(struct mlxsw_sp *mlxsw_sp,
 815                                 struct mlxsw_sp_acl_rule *rule,
 816                                 u64 *packets, u64 *bytes, u64 *last_use)
 817
 818 {
 819         struct mlxsw_sp_acl_rule_info *rulei;
 820         u64 current_packets;
 821         u64 current_bytes;
 822         int err;
 823
 824         rulei = mlxsw_sp_acl_rule_rulei(rule);
 825         err = mlxsw_sp_flow_counter_get(mlxsw_sp, rulei->counter_index,
 826                                         &current_packets, &current_bytes);
 827         if (err)
 828                 return err;
 829
 830         *packets = current_packets - rule->last_packets;
 831         *bytes = current_bytes - rule->last_bytes;
 832         *last_use = rule->last_used;
 833
 834         rule->last_bytes = current_bytes;
 835         rule->last_packets = current_packets;
 836
 837         return 0;
 838 }
 839
 840 int mlxsw_sp_acl_init(struct mlxsw_sp *mlxsw_sp)
 841 {
 842         struct mlxsw_sp_fid *fid;
 843         struct mlxsw_sp_acl *acl;
 844         size_t alloc_size;
 845         int err;
 846
 847         alloc_size = sizeof(*acl) + mlxsw_sp_acl_tcam_priv_size(mlxsw_sp);
 848         acl = kzalloc(alloc_size, GFP_KERNEL);
 849         if (!acl)
 850                 return -ENOMEM;
 851         mlxsw_sp->acl = acl;
 852         acl->mlxsw_sp = mlxsw_sp;
 853         acl->afk = mlxsw_afk_create(MLXSW_CORE_RES_GET(mlxsw_sp->core,
 854                                                        ACL_FLEX_KEYS),
 855                                     mlxsw_sp->afk_ops);
 856         if (!acl->afk) {
 857                 err = -ENOMEM;
 858                 goto err_afk_create;
 859         }
 860
 861         err = rhashtable_init(&acl->ruleset_ht,
 862                               &mlxsw_sp_acl_ruleset_ht_params);
 863         if (err)
 864                 goto err_rhashtable_init;
 865
 866         fid = mlxsw_sp_fid_dummy_get(mlxsw_sp);
 867         if (IS_ERR(fid)) {
 868                 err = PTR_ERR(fid);
 869                 goto err_fid_get;
 870         }
 871         acl->dummy_fid = fid;
 872
 873         INIT_LIST_HEAD(&acl->rules);
 874         err = mlxsw_sp_acl_tcam_init(mlxsw_sp, &acl->tcam);
 875         if (err)
 876                 goto err_acl_ops_init;
 877
 878         /* Create the delayed work for the rule activity_update */
 879         INIT_DELAYED_WORK(&acl->rule_activity_update.dw,
 880                           mlxsw_sp_acl_rule_activity_update_work);
 881         acl->rule_activity_update.interval = MLXSW_SP_ACL_RULE_ACTIVITY_UPDATE_PERIOD_MS;
 882         mlxsw_core_schedule_dw(&acl->rule_activity_update.dw, 0);
 883         return 0;
 884
 885 err_acl_ops_init:
 886         mlxsw_sp_fid_put(fid);
 887 err_fid_get:
 888         rhashtable_destroy(&acl->ruleset_ht);
 889 err_rhashtable_init:
 890         mlxsw_afk_destroy(acl->afk);
 891 err_afk_create:
 892         kfree(acl);
 893         return err;
 894 }
 895
 896 void mlxsw_sp_acl_fini(struct mlxsw_sp *mlxsw_sp)
 897 {
 898         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 899
 900         cancel_delayed_work_sync(&mlxsw_sp->acl->rule_activity_update.dw);
 901         mlxsw_sp_acl_tcam_fini(mlxsw_sp, &acl->tcam);
 902         WARN_ON(!list_empty(&acl->rules));
 903         mlxsw_sp_fid_put(acl->dummy_fid);
 904         rhashtable_destroy(&acl->ruleset_ht);
 905         mlxsw_afk_destroy(acl->afk);
 906         kfree(acl);
 907 }
 908
 909 u32 mlxsw_sp_acl_region_rehash_intrvl_get(struct mlxsw_sp *mlxsw_sp)
 910 {
 911         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 912
 913         return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_get(mlxsw_sp,
 914                                                            &acl->tcam);
 915 }
 916
 917 int mlxsw_sp_acl_region_rehash_intrvl_set(struct mlxsw_sp *mlxsw_sp, u32 val)
 918 {
 919         struct mlxsw_sp_acl *acl = mlxsw_sp->acl;
 920
 921         return mlxsw_sp_acl_tcam_vregion_rehash_intrvl_set(mlxsw_sp,
 922                                                            &acl->tcam, val);
 923 }