drivers/net/ethernet/mellanox/mlx5/core/steering/dr_rule.c

   1 // SPDX-License-Identifier: GPL-2.0 OR Linux-OpenIB
   2 /* Copyright (c) 2019 Mellanox Technologies. */
   3
   4 #include "dr_types.h"
   5
   6 #define DR_RULE_MAX_STE_CHAIN (DR_RULE_MAX_STES + DR_ACTION_MAX_STES)
   7
   8 struct mlx5dr_rule_action_member {
   9         struct mlx5dr_action *action;
  10         struct list_head list;
  11 };
  12
  13 static int dr_rule_append_to_miss_list(struct mlx5dr_ste *new_last_ste,
  14                                        struct list_head *miss_list,
  15                                        struct list_head *send_list)
  16 {
  17         struct mlx5dr_ste_send_info *ste_info_last;
  18         struct mlx5dr_ste *last_ste;
  19
  20         /* The new entry will be inserted after the last */
  21         last_ste = list_entry(miss_list->prev, struct mlx5dr_ste, miss_list_node);
  22         WARN_ON(!last_ste);
  23
  24         ste_info_last = kzalloc(sizeof(*ste_info_last), GFP_KERNEL);
  25         if (!ste_info_last)
  26                 return -ENOMEM;
  27
  28         mlx5dr_ste_set_miss_addr(last_ste->hw_ste,
  29                                  mlx5dr_ste_get_icm_addr(new_last_ste));
  30         list_add_tail(&new_last_ste->miss_list_node, miss_list);
  31
  32         mlx5dr_send_fill_and_append_ste_send_info(last_ste, DR_STE_SIZE_REDUCED,
  33                                                   0, last_ste->hw_ste,
  34                                                   ste_info_last, send_list, true);
  35
  36         return 0;
  37 }
  38
  39 static struct mlx5dr_ste *
  40 dr_rule_create_collision_htbl(struct mlx5dr_matcher *matcher,
  41                               struct mlx5dr_matcher_rx_tx *nic_matcher,
  42                               u8 *hw_ste)
  43 {
  44         struct mlx5dr_domain *dmn = matcher->tbl->dmn;
  45         struct mlx5dr_ste_htbl *new_htbl;
  46         struct mlx5dr_ste *ste;
  47
  48         /* Create new table for miss entry */
  49         new_htbl = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
  50                                          DR_CHUNK_SIZE_1,
  51                                          MLX5DR_STE_LU_TYPE_DONT_CARE,
  52                                          0);
  53         if (!new_htbl) {
  54                 mlx5dr_dbg(dmn, "Failed allocating collision table\n");
  55                 return NULL;
  56         }
  57
  58         /* One and only entry, never grows */
  59         ste = new_htbl->ste_arr;
  60         mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
  61         mlx5dr_htbl_get(new_htbl);
  62
  63         return ste;
  64 }
  65
  66 static struct mlx5dr_ste *
  67 dr_rule_create_collision_entry(struct mlx5dr_matcher *matcher,
  68                                struct mlx5dr_matcher_rx_tx *nic_matcher,
  69                                u8 *hw_ste,
  70                                struct mlx5dr_ste *orig_ste)
  71 {
  72         struct mlx5dr_ste *ste;
  73
  74         ste = dr_rule_create_collision_htbl(matcher, nic_matcher, hw_ste);
  75         if (!ste) {
  76                 mlx5dr_dbg(matcher->tbl->dmn, "Failed creating collision entry\n");
  77                 return NULL;
  78         }
  79
  80         ste->ste_chain_location = orig_ste->ste_chain_location;
  81
  82         /* In collision entry, all members share the same miss_list_head */
  83         ste->htbl->miss_list = mlx5dr_ste_get_miss_list(orig_ste);
  84
  85         /* Next table */
  86         if (mlx5dr_ste_create_next_htbl(matcher, nic_matcher, ste, hw_ste,
  87                                         DR_CHUNK_SIZE_1)) {
  88                 mlx5dr_dbg(matcher->tbl->dmn, "Failed allocating table\n");
  89                 goto free_tbl;
  90         }
  91
  92         return ste;
  93
  94 free_tbl:
  95         mlx5dr_ste_free(ste, matcher, nic_matcher);
  96         return NULL;
  97 }
  98
  99 static int
 100 dr_rule_handle_one_ste_in_update_list(struct mlx5dr_ste_send_info *ste_info,
 101                                       struct mlx5dr_domain *dmn)
 102 {
 103         int ret;
 104
 105         list_del(&ste_info->send_list);
 106         ret = mlx5dr_send_postsend_ste(dmn, ste_info->ste, ste_info->data,
 107                                        ste_info->size, ste_info->offset);
 108         if (ret)
 109                 goto out;
 110         /* Copy data to ste, only reduced size, the last 16B (mask)
 111          * is already written to the hw.
 112          */
 113         memcpy(ste_info->ste->hw_ste, ste_info->data, DR_STE_SIZE_REDUCED);
 114
 115 out:
 116         kfree(ste_info);
 117         return ret;
 118 }
 119
 120 static int dr_rule_send_update_list(struct list_head *send_ste_list,
 121                                     struct mlx5dr_domain *dmn,
 122                                     bool is_reverse)
 123 {
 124         struct mlx5dr_ste_send_info *ste_info, *tmp_ste_info;
 125         int ret;
 126
 127         if (is_reverse) {
 128                 list_for_each_entry_safe_reverse(ste_info, tmp_ste_info,
 129                                                  send_ste_list, send_list) {
 130                         ret = dr_rule_handle_one_ste_in_update_list(ste_info,
 131                                                                     dmn);
 132                         if (ret)
 133                                 return ret;
 134                 }
 135         } else {
 136                 list_for_each_entry_safe(ste_info, tmp_ste_info,
 137                                          send_ste_list, send_list) {
 138                         ret = dr_rule_handle_one_ste_in_update_list(ste_info,
 139                                                                     dmn);
 140                         if (ret)
 141                                 return ret;
 142                 }
 143         }
 144
 145         return 0;
 146 }
 147
 148 static struct mlx5dr_ste *
 149 dr_rule_find_ste_in_miss_list(struct list_head *miss_list, u8 *hw_ste)
 150 {
 151         struct mlx5dr_ste *ste;
 152
 153         if (list_empty(miss_list))
 154                 return NULL;
 155
 156         /* Check if hw_ste is present in the list */
 157         list_for_each_entry(ste, miss_list, miss_list_node) {
 158                 if (mlx5dr_ste_equal_tag(ste->hw_ste, hw_ste))
 159                         return ste;
 160         }
 161
 162         return NULL;
 163 }
 164
 165 static struct mlx5dr_ste *
 166 dr_rule_rehash_handle_collision(struct mlx5dr_matcher *matcher,
 167                                 struct mlx5dr_matcher_rx_tx *nic_matcher,
 168                                 struct list_head *update_list,
 169                                 struct mlx5dr_ste *col_ste,
 170                                 u8 *hw_ste)
 171 {
 172         struct mlx5dr_ste *new_ste;
 173         int ret;
 174
 175         new_ste = dr_rule_create_collision_htbl(matcher, nic_matcher, hw_ste);
 176         if (!new_ste)
 177                 return NULL;
 178
 179         /* In collision entry, all members share the same miss_list_head */
 180         new_ste->htbl->miss_list = mlx5dr_ste_get_miss_list(col_ste);
 181
 182         /* Update the previous from the list */
 183         ret = dr_rule_append_to_miss_list(new_ste,
 184                                           mlx5dr_ste_get_miss_list(col_ste),
 185                                           update_list);
 186         if (ret) {
 187                 mlx5dr_dbg(matcher->tbl->dmn, "Failed update dup entry\n");
 188                 goto err_exit;
 189         }
 190
 191         return new_ste;
 192
 193 err_exit:
 194         mlx5dr_ste_free(new_ste, matcher, nic_matcher);
 195         return NULL;
 196 }
 197
 198 static void dr_rule_rehash_copy_ste_ctrl(struct mlx5dr_matcher *matcher,
 199                                          struct mlx5dr_matcher_rx_tx *nic_matcher,
 200                                          struct mlx5dr_ste *cur_ste,
 201                                          struct mlx5dr_ste *new_ste)
 202 {
 203         new_ste->next_htbl = cur_ste->next_htbl;
 204         new_ste->ste_chain_location = cur_ste->ste_chain_location;
 205
 206         if (!mlx5dr_ste_is_last_in_rule(nic_matcher, new_ste->ste_chain_location))
 207                 new_ste->next_htbl->pointing_ste = new_ste;
 208
 209         /* We need to copy the refcount since this ste
 210          * may have been traversed several times
 211          */
 212         refcount_set(&new_ste->refcount, refcount_read(&cur_ste->refcount));
 213
 214         /* Link old STEs rule_mem list to the new ste */
 215         mlx5dr_rule_update_rule_member(cur_ste, new_ste);
 216         INIT_LIST_HEAD(&new_ste->rule_list);
 217         list_splice_tail_init(&cur_ste->rule_list, &new_ste->rule_list);
 218 }
 219
 220 static struct mlx5dr_ste *
 221 dr_rule_rehash_copy_ste(struct mlx5dr_matcher *matcher,
 222                         struct mlx5dr_matcher_rx_tx *nic_matcher,
 223                         struct mlx5dr_ste *cur_ste,
 224                         struct mlx5dr_ste_htbl *new_htbl,
 225                         struct list_head *update_list)
 226 {
 227         struct mlx5dr_ste_send_info *ste_info;
 228         bool use_update_list = false;
 229         u8 hw_ste[DR_STE_SIZE] = {};
 230         struct mlx5dr_ste *new_ste;
 231         int new_idx;
 232         u8 sb_idx;
 233
 234         /* Copy STE mask from the matcher */
 235         sb_idx = cur_ste->ste_chain_location - 1;
 236         mlx5dr_ste_set_bit_mask(hw_ste, nic_matcher->ste_builder[sb_idx].bit_mask);
 237
 238         /* Copy STE control and tag */
 239         memcpy(hw_ste, cur_ste->hw_ste, DR_STE_SIZE_REDUCED);
 240         mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
 241
 242         new_idx = mlx5dr_ste_calc_hash_index(hw_ste, new_htbl);
 243         new_ste = &new_htbl->ste_arr[new_idx];
 244
 245         if (mlx5dr_ste_not_used_ste(new_ste)) {
 246                 mlx5dr_htbl_get(new_htbl);
 247                 list_add_tail(&new_ste->miss_list_node,
 248                               mlx5dr_ste_get_miss_list(new_ste));
 249         } else {
 250                 new_ste = dr_rule_rehash_handle_collision(matcher,
 251                                                           nic_matcher,
 252                                                           update_list,
 253                                                           new_ste,
 254                                                           hw_ste);
 255                 if (!new_ste) {
 256                         mlx5dr_dbg(matcher->tbl->dmn, "Failed adding collision entry, index: %d\n",
 257                                    new_idx);
 258                         return NULL;
 259                 }
 260                 new_htbl->ctrl.num_of_collisions++;
 261                 use_update_list = true;
 262         }
 263
 264         memcpy(new_ste->hw_ste, hw_ste, DR_STE_SIZE_REDUCED);
 265
 266         new_htbl->ctrl.num_of_valid_entries++;
 267
 268         if (use_update_list) {
 269                 ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
 270                 if (!ste_info)
 271                         goto err_exit;
 272
 273                 mlx5dr_send_fill_and_append_ste_send_info(new_ste, DR_STE_SIZE, 0,
 274                                                           hw_ste, ste_info,
 275                                                           update_list, true);
 276         }
 277
 278         dr_rule_rehash_copy_ste_ctrl(matcher, nic_matcher, cur_ste, new_ste);
 279
 280         return new_ste;
 281
 282 err_exit:
 283         mlx5dr_ste_free(new_ste, matcher, nic_matcher);
 284         return NULL;
 285 }
 286
 287 static int dr_rule_rehash_copy_miss_list(struct mlx5dr_matcher *matcher,
 288                                          struct mlx5dr_matcher_rx_tx *nic_matcher,
 289                                          struct list_head *cur_miss_list,
 290                                          struct mlx5dr_ste_htbl *new_htbl,
 291                                          struct list_head *update_list)
 292 {
 293         struct mlx5dr_ste *tmp_ste, *cur_ste, *new_ste;
 294
 295         if (list_empty(cur_miss_list))
 296                 return 0;
 297
 298         list_for_each_entry_safe(cur_ste, tmp_ste, cur_miss_list, miss_list_node) {
 299                 new_ste = dr_rule_rehash_copy_ste(matcher,
 300                                                   nic_matcher,
 301                                                   cur_ste,
 302                                                   new_htbl,
 303                                                   update_list);
 304                 if (!new_ste)
 305                         goto err_insert;
 306
 307                 list_del(&cur_ste->miss_list_node);
 308                 mlx5dr_htbl_put(cur_ste->htbl);
 309         }
 310         return 0;
 311
 312 err_insert:
 313         mlx5dr_err(matcher->tbl->dmn, "Fatal error during resize\n");
 314         WARN_ON(true);
 315         return -EINVAL;
 316 }
 317
 318 static int dr_rule_rehash_copy_htbl(struct mlx5dr_matcher *matcher,
 319                                     struct mlx5dr_matcher_rx_tx *nic_matcher,
 320                                     struct mlx5dr_ste_htbl *cur_htbl,
 321                                     struct mlx5dr_ste_htbl *new_htbl,
 322                                     struct list_head *update_list)
 323 {
 324         struct mlx5dr_ste *cur_ste;
 325         int cur_entries;
 326         int err = 0;
 327         int i;
 328
 329         cur_entries = mlx5dr_icm_pool_chunk_size_to_entries(cur_htbl->chunk_size);
 330
 331         if (cur_entries < 1) {
 332                 mlx5dr_dbg(matcher->tbl->dmn, "Invalid number of entries\n");
 333                 return -EINVAL;
 334         }
 335
 336         for (i = 0; i < cur_entries; i++) {
 337                 cur_ste = &cur_htbl->ste_arr[i];
 338                 if (mlx5dr_ste_not_used_ste(cur_ste)) /* Empty, nothing to copy */
 339                         continue;
 340
 341                 err = dr_rule_rehash_copy_miss_list(matcher,
 342                                                     nic_matcher,
 343                                                     mlx5dr_ste_get_miss_list(cur_ste),
 344                                                     new_htbl,
 345                                                     update_list);
 346                 if (err)
 347                         goto clean_copy;
 348         }
 349
 350 clean_copy:
 351         return err;
 352 }
 353
 354 static struct mlx5dr_ste_htbl *
 355 dr_rule_rehash_htbl(struct mlx5dr_rule *rule,
 356                     struct mlx5dr_rule_rx_tx *nic_rule,
 357                     struct mlx5dr_ste_htbl *cur_htbl,
 358                     u8 ste_location,
 359                     struct list_head *update_list,
 360                     enum mlx5dr_icm_chunk_size new_size)
 361 {
 362         struct mlx5dr_ste_send_info *del_ste_info, *tmp_ste_info;
 363         struct mlx5dr_matcher *matcher = rule->matcher;
 364         struct mlx5dr_domain *dmn = matcher->tbl->dmn;
 365         struct mlx5dr_matcher_rx_tx *nic_matcher;
 366         struct mlx5dr_ste_send_info *ste_info;
 367         struct mlx5dr_htbl_connect_info info;
 368         struct mlx5dr_domain_rx_tx *nic_dmn;
 369         u8 formatted_ste[DR_STE_SIZE] = {};
 370         LIST_HEAD(rehash_table_send_list);
 371         struct mlx5dr_ste *ste_to_update;
 372         struct mlx5dr_ste_htbl *new_htbl;
 373         int err;
 374
 375         nic_matcher = nic_rule->nic_matcher;
 376         nic_dmn = nic_matcher->nic_tbl->nic_dmn;
 377
 378         ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
 379         if (!ste_info)
 380                 return NULL;
 381
 382         new_htbl = mlx5dr_ste_htbl_alloc(dmn->ste_icm_pool,
 383                                          new_size,
 384                                          cur_htbl->lu_type,
 385                                          cur_htbl->byte_mask);
 386         if (!new_htbl) {
 387                 mlx5dr_err(dmn, "Failed to allocate new hash table\n");
 388                 goto free_ste_info;
 389         }
 390
 391         /* Write new table to HW */
 392         info.type = CONNECT_MISS;
 393         info.miss_icm_addr = nic_matcher->e_anchor->chunk->icm_addr;
 394         mlx5dr_ste_set_formatted_ste(dmn->info.caps.gvmi,
 395                                      nic_dmn,
 396                                      new_htbl,
 397                                      formatted_ste,
 398                                      &info);
 399
 400         new_htbl->pointing_ste = cur_htbl->pointing_ste;
 401         new_htbl->pointing_ste->next_htbl = new_htbl;
 402         err = dr_rule_rehash_copy_htbl(matcher,
 403                                        nic_matcher,
 404                                        cur_htbl,
 405                                        new_htbl,
 406                                        &rehash_table_send_list);
 407         if (err)
 408                 goto free_new_htbl;
 409
 410         if (mlx5dr_send_postsend_htbl(dmn, new_htbl, formatted_ste,
 411                                       nic_matcher->ste_builder[ste_location - 1].bit_mask)) {
 412                 mlx5dr_err(dmn, "Failed writing table to HW\n");
 413                 goto free_new_htbl;
 414         }
 415
 416         /* Writing to the hw is done in regular order of rehash_table_send_list,
 417          * in order to have the origin data written before the miss address of
 418          * collision entries, if exists.
 419          */
 420         if (dr_rule_send_update_list(&rehash_table_send_list, dmn, false)) {
 421                 mlx5dr_err(dmn, "Failed updating table to HW\n");
 422                 goto free_ste_list;
 423         }
 424
 425         /* Connect previous hash table to current */
 426         if (ste_location == 1) {
 427                 /* The previous table is an anchor, anchors size is always one STE */
 428                 struct mlx5dr_ste_htbl *prev_htbl = cur_htbl->pointing_ste->htbl;
 429
 430                 /* On matcher s_anchor we keep an extra refcount */
 431                 mlx5dr_htbl_get(new_htbl);
 432                 mlx5dr_htbl_put(cur_htbl);
 433
 434                 nic_matcher->s_htbl = new_htbl;
 435
 436                 /* It is safe to operate dr_ste_set_hit_addr on the hw_ste here
 437                  * (48B len) which works only on first 32B
 438                  */
 439                 mlx5dr_ste_set_hit_addr(prev_htbl->ste_arr[0].hw_ste,
 440                                         new_htbl->chunk->icm_addr,
 441                                         new_htbl->chunk->num_of_entries);
 442
 443                 ste_to_update = &prev_htbl->ste_arr[0];
 444         } else {
 445                 mlx5dr_ste_set_hit_addr_by_next_htbl(cur_htbl->pointing_ste->hw_ste,
 446                                                      new_htbl);
 447                 ste_to_update = cur_htbl->pointing_ste;
 448         }
 449
 450         mlx5dr_send_fill_and_append_ste_send_info(ste_to_update, DR_STE_SIZE_REDUCED,
 451                                                   0, ste_to_update->hw_ste, ste_info,
 452                                                   update_list, false);
 453
 454         return new_htbl;
 455
 456 free_ste_list:
 457         /* Clean all ste_info's from the new table */
 458         list_for_each_entry_safe(del_ste_info, tmp_ste_info,
 459                                  &rehash_table_send_list, send_list) {
 460                 list_del(&del_ste_info->send_list);
 461                 kfree(del_ste_info);
 462         }
 463
 464 free_new_htbl:
 465         mlx5dr_ste_htbl_free(new_htbl);
 466 free_ste_info:
 467         kfree(ste_info);
 468         mlx5dr_info(dmn, "Failed creating rehash table\n");
 469         return NULL;
 470 }
 471
 472 static struct mlx5dr_ste_htbl *dr_rule_rehash(struct mlx5dr_rule *rule,
 473                                               struct mlx5dr_rule_rx_tx *nic_rule,
 474                                               struct mlx5dr_ste_htbl *cur_htbl,
 475                                               u8 ste_location,
 476                                               struct list_head *update_list)
 477 {
 478         struct mlx5dr_domain *dmn = rule->matcher->tbl->dmn;
 479         enum mlx5dr_icm_chunk_size new_size;
 480
 481         new_size = mlx5dr_icm_next_higher_chunk(cur_htbl->chunk_size);
 482         new_size = min_t(u32, new_size, dmn->info.max_log_sw_icm_sz);
 483
 484         if (new_size == cur_htbl->chunk_size)
 485                 return NULL; /* Skip rehash, we already at the max size */
 486
 487         return dr_rule_rehash_htbl(rule, nic_rule, cur_htbl, ste_location,
 488                                    update_list, new_size);
 489 }
 490
 491 static struct mlx5dr_ste *
 492 dr_rule_handle_collision(struct mlx5dr_matcher *matcher,
 493                          struct mlx5dr_matcher_rx_tx *nic_matcher,
 494                          struct mlx5dr_ste *ste,
 495                          u8 *hw_ste,
 496                          struct list_head *miss_list,
 497                          struct list_head *send_list)
 498 {
 499         struct mlx5dr_ste_send_info *ste_info;
 500         struct mlx5dr_ste *new_ste;
 501
 502         ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
 503         if (!ste_info)
 504                 return NULL;
 505
 506         new_ste = dr_rule_create_collision_entry(matcher, nic_matcher, hw_ste, ste);
 507         if (!new_ste)
 508                 goto free_send_info;
 509
 510         if (dr_rule_append_to_miss_list(new_ste, miss_list, send_list)) {
 511                 mlx5dr_dbg(matcher->tbl->dmn, "Failed to update prev miss_list\n");
 512                 goto err_exit;
 513         }
 514
 515         mlx5dr_send_fill_and_append_ste_send_info(new_ste, DR_STE_SIZE, 0, hw_ste,
 516                                                   ste_info, send_list, false);
 517
 518         ste->htbl->ctrl.num_of_collisions++;
 519         ste->htbl->ctrl.num_of_valid_entries++;
 520
 521         return new_ste;
 522
 523 err_exit:
 524         mlx5dr_ste_free(new_ste, matcher, nic_matcher);
 525 free_send_info:
 526         kfree(ste_info);
 527         return NULL;
 528 }
 529
 530 static void dr_rule_remove_action_members(struct mlx5dr_rule *rule)
 531 {
 532         struct mlx5dr_rule_action_member *action_mem;
 533         struct mlx5dr_rule_action_member *tmp;
 534
 535         list_for_each_entry_safe(action_mem, tmp, &rule->rule_actions_list, list) {
 536                 list_del(&action_mem->list);
 537                 refcount_dec(&action_mem->action->refcount);
 538                 kvfree(action_mem);
 539         }
 540 }
 541
 542 static int dr_rule_add_action_members(struct mlx5dr_rule *rule,
 543                                       size_t num_actions,
 544                                       struct mlx5dr_action *actions[])
 545 {
 546         struct mlx5dr_rule_action_member *action_mem;
 547         int i;
 548
 549         for (i = 0; i < num_actions; i++) {
 550                 action_mem = kvzalloc(sizeof(*action_mem), GFP_KERNEL);
 551                 if (!action_mem)
 552                         goto free_action_members;
 553
 554                 action_mem->action = actions[i];
 555                 INIT_LIST_HEAD(&action_mem->list);
 556                 list_add_tail(&action_mem->list, &rule->rule_actions_list);
 557                 refcount_inc(&action_mem->action->refcount);
 558         }
 559
 560         return 0;
 561
 562 free_action_members:
 563         dr_rule_remove_action_members(rule);
 564         return -ENOMEM;
 565 }
 566
 567 /* While the pointer of ste is no longer valid, like while moving ste to be
 568  * the first in the miss_list, and to be in the origin table,
 569  * all rule-members that are attached to this ste should update their ste member
 570  * to the new pointer
 571  */
 572 void mlx5dr_rule_update_rule_member(struct mlx5dr_ste *ste,
 573                                     struct mlx5dr_ste *new_ste)
 574 {
 575         struct mlx5dr_rule_member *rule_mem;
 576
 577         if (!list_empty(&ste->rule_list))
 578                 list_for_each_entry(rule_mem, &ste->rule_list, use_ste_list)
 579                         rule_mem->ste = new_ste;
 580 }
 581
 582 static void dr_rule_clean_rule_members(struct mlx5dr_rule *rule,
 583                                        struct mlx5dr_rule_rx_tx *nic_rule)
 584 {
 585         struct mlx5dr_rule_member *rule_mem;
 586         struct mlx5dr_rule_member *tmp_mem;
 587
 588         if (list_empty(&nic_rule->rule_members_list))
 589                 return;
 590         list_for_each_entry_safe(rule_mem, tmp_mem, &nic_rule->rule_members_list, list) {
 591                 list_del(&rule_mem->list);
 592                 list_del(&rule_mem->use_ste_list);
 593                 mlx5dr_ste_put(rule_mem->ste, rule->matcher, nic_rule->nic_matcher);
 594                 kvfree(rule_mem);
 595         }
 596 }
 597
 598 static bool dr_rule_need_enlarge_hash(struct mlx5dr_ste_htbl *htbl,
 599                                       struct mlx5dr_domain *dmn,
 600                                       struct mlx5dr_domain_rx_tx *nic_dmn)
 601 {
 602         struct mlx5dr_ste_htbl_ctrl *ctrl = &htbl->ctrl;
 603
 604         if (dmn->info.max_log_sw_icm_sz <= htbl->chunk_size)
 605                 return false;
 606
 607         if (!ctrl->may_grow)
 608                 return false;
 609
 610         if (ctrl->num_of_collisions >= ctrl->increase_threshold &&
 611             (ctrl->num_of_valid_entries - ctrl->num_of_collisions) >= ctrl->increase_threshold)
 612                 return true;
 613
 614         return false;
 615 }
 616
 617 static int dr_rule_add_member(struct mlx5dr_rule_rx_tx *nic_rule,
 618                               struct mlx5dr_ste *ste)
 619 {
 620         struct mlx5dr_rule_member *rule_mem;
 621
 622         rule_mem = kvzalloc(sizeof(*rule_mem), GFP_KERNEL);
 623         if (!rule_mem)
 624                 return -ENOMEM;
 625
 626         rule_mem->ste = ste;
 627         list_add_tail(&rule_mem->list, &nic_rule->rule_members_list);
 628
 629         list_add_tail(&rule_mem->use_ste_list, &ste->rule_list);
 630
 631         return 0;
 632 }
 633
 634 static int dr_rule_handle_action_stes(struct mlx5dr_rule *rule,
 635                                       struct mlx5dr_rule_rx_tx *nic_rule,
 636                                       struct list_head *send_ste_list,
 637                                       struct mlx5dr_ste *last_ste,
 638                                       u8 *hw_ste_arr,
 639                                       u32 new_hw_ste_arr_sz)
 640 {
 641         struct mlx5dr_matcher_rx_tx *nic_matcher = nic_rule->nic_matcher;
 642         struct mlx5dr_ste_send_info *ste_info_arr[DR_ACTION_MAX_STES];
 643         u8 num_of_builders = nic_matcher->num_of_builders;
 644         struct mlx5dr_matcher *matcher = rule->matcher;
 645         u8 *curr_hw_ste, *prev_hw_ste;
 646         struct mlx5dr_ste *action_ste;
 647         int i, k, ret;
 648
 649         /* Two cases:
 650          * 1. num_of_builders is equal to new_hw_ste_arr_sz, the action in the ste
 651          * 2. num_of_builders is less then new_hw_ste_arr_sz, new ste was added
 652          *    to support the action.
 653          */
 654         if (num_of_builders == new_hw_ste_arr_sz)
 655                 return 0;
 656
 657         for (i = num_of_builders, k = 0; i < new_hw_ste_arr_sz; i++, k++) {
 658                 curr_hw_ste = hw_ste_arr + i * DR_STE_SIZE;
 659                 prev_hw_ste = (i == 0) ? curr_hw_ste : hw_ste_arr + ((i - 1) * DR_STE_SIZE);
 660                 action_ste = dr_rule_create_collision_htbl(matcher,
 661                                                            nic_matcher,
 662                                                            curr_hw_ste);
 663                 if (!action_ste)
 664                         return -ENOMEM;
 665
 666                 mlx5dr_ste_get(action_ste);
 667
 668                 /* While free ste we go over the miss list, so add this ste to the list */
 669                 list_add_tail(&action_ste->miss_list_node,
 670                               mlx5dr_ste_get_miss_list(action_ste));
 671
 672                 ste_info_arr[k] = kzalloc(sizeof(*ste_info_arr[k]),
 673                                           GFP_KERNEL);
 674                 if (!ste_info_arr[k])
 675                         goto err_exit;
 676
 677                 /* Point current ste to the new action */
 678                 mlx5dr_ste_set_hit_addr_by_next_htbl(prev_hw_ste, action_ste->htbl);
 679                 ret = dr_rule_add_member(nic_rule, action_ste);
 680                 if (ret) {
 681                         mlx5dr_dbg(matcher->tbl->dmn, "Failed adding rule member\n");
 682                         goto free_ste_info;
 683                 }
 684                 mlx5dr_send_fill_and_append_ste_send_info(action_ste, DR_STE_SIZE, 0,
 685                                                           curr_hw_ste,
 686                                                           ste_info_arr[k],
 687                                                           send_ste_list, false);
 688         }
 689
 690         return 0;
 691
 692 free_ste_info:
 693         kfree(ste_info_arr[k]);
 694 err_exit:
 695         mlx5dr_ste_put(action_ste, matcher, nic_matcher);
 696         return -ENOMEM;
 697 }
 698
 699 static int dr_rule_handle_empty_entry(struct mlx5dr_matcher *matcher,
 700                                       struct mlx5dr_matcher_rx_tx *nic_matcher,
 701                                       struct mlx5dr_ste_htbl *cur_htbl,
 702                                       struct mlx5dr_ste *ste,
 703                                       u8 ste_location,
 704                                       u8 *hw_ste,
 705                                       struct list_head *miss_list,
 706                                       struct list_head *send_list)
 707 {
 708         struct mlx5dr_ste_send_info *ste_info;
 709
 710         /* Take ref on table, only on first time this ste is used */
 711         mlx5dr_htbl_get(cur_htbl);
 712
 713         /* new entry -> new branch */
 714         list_add_tail(&ste->miss_list_node, miss_list);
 715
 716         mlx5dr_ste_set_miss_addr(hw_ste, nic_matcher->e_anchor->chunk->icm_addr);
 717
 718         ste->ste_chain_location = ste_location;
 719
 720         ste_info = kzalloc(sizeof(*ste_info), GFP_KERNEL);
 721         if (!ste_info)
 722                 goto clean_ste_setting;
 723
 724         if (mlx5dr_ste_create_next_htbl(matcher,
 725                                         nic_matcher,
 726                                         ste,
 727                                         hw_ste,
 728                                         DR_CHUNK_SIZE_1)) {
 729                 mlx5dr_dbg(matcher->tbl->dmn, "Failed allocating table\n");
 730                 goto clean_ste_info;
 731         }
 732
 733         cur_htbl->ctrl.num_of_valid_entries++;
 734
 735         mlx5dr_send_fill_and_append_ste_send_info(ste, DR_STE_SIZE, 0, hw_ste,
 736                                                   ste_info, send_list, false);
 737
 738         return 0;
 739
 740 clean_ste_info:
 741         kfree(ste_info);
 742 clean_ste_setting:
 743         list_del_init(&ste->miss_list_node);
 744         mlx5dr_htbl_put(cur_htbl);
 745
 746         return -ENOMEM;
 747 }
 748
 749 static struct mlx5dr_ste *
 750 dr_rule_handle_ste_branch(struct mlx5dr_rule *rule,
 751                           struct mlx5dr_rule_rx_tx *nic_rule,
 752                           struct list_head *send_ste_list,
 753                           struct mlx5dr_ste_htbl *cur_htbl,
 754                           u8 *hw_ste,
 755                           u8 ste_location,
 756                           struct mlx5dr_ste_htbl **put_htbl)
 757 {
 758         struct mlx5dr_matcher *matcher = rule->matcher;
 759         struct mlx5dr_domain *dmn = matcher->tbl->dmn;
 760         struct mlx5dr_matcher_rx_tx *nic_matcher;
 761         struct mlx5dr_domain_rx_tx *nic_dmn;
 762         struct mlx5dr_ste_htbl *new_htbl;
 763         struct mlx5dr_ste *matched_ste;
 764         struct list_head *miss_list;
 765         bool skip_rehash = false;
 766         struct mlx5dr_ste *ste;
 767         int index;
 768
 769         nic_matcher = nic_rule->nic_matcher;
 770         nic_dmn = nic_matcher->nic_tbl->nic_dmn;
 771
 772 again:
 773         index = mlx5dr_ste_calc_hash_index(hw_ste, cur_htbl);
 774         miss_list = &cur_htbl->chunk->miss_list[index];
 775         ste = &cur_htbl->ste_arr[index];
 776
 777         if (mlx5dr_ste_not_used_ste(ste)) {
 778                 if (dr_rule_handle_empty_entry(matcher, nic_matcher, cur_htbl,
 779                                                ste, ste_location,
 780                                                hw_ste, miss_list,
 781                                                send_ste_list))
 782                         return NULL;
 783         } else {
 784                 /* Hash table index in use, check if this ste is in the miss list */
 785                 matched_ste = dr_rule_find_ste_in_miss_list(miss_list, hw_ste);
 786                 if (matched_ste) {
 787                         /* If it is last STE in the chain, and has the same tag
 788                          * it means that all the previous stes are the same,
 789                          * if so, this rule is duplicated.
 790                          */
 791                         if (mlx5dr_ste_is_last_in_rule(nic_matcher,
 792                                                        matched_ste->ste_chain_location)) {
 793                                 mlx5dr_info(dmn, "Duplicate rule inserted, aborting!!\n");
 794                                 return NULL;
 795                         }
 796                         return matched_ste;
 797                 }
 798
 799                 if (!skip_rehash && dr_rule_need_enlarge_hash(cur_htbl, dmn, nic_dmn)) {
 800                         /* Hash table index in use, try to resize of the hash */
 801                         skip_rehash = true;
 802
 803                         /* Hold the table till we update.
 804                          * Release in dr_rule_create_rule()
 805                          */
 806                         *put_htbl = cur_htbl;
 807                         mlx5dr_htbl_get(cur_htbl);
 808
 809                         new_htbl = dr_rule_rehash(rule, nic_rule, cur_htbl,
 810                                                   ste_location, send_ste_list);
 811                         if (!new_htbl) {
 812                                 mlx5dr_htbl_put(cur_htbl);
 813                                 mlx5dr_info(dmn, "failed creating rehash table, htbl-log_size: %d\n",
 814                                             cur_htbl->chunk_size);
 815                         } else {
 816                                 cur_htbl = new_htbl;
 817                         }
 818                         goto again;
 819                 } else {
 820                         /* Hash table index in use, add another collision (miss) */
 821                         ste = dr_rule_handle_collision(matcher,
 822                                                        nic_matcher,
 823                                                        ste,
 824                                                        hw_ste,
 825                                                        miss_list,
 826                                                        send_ste_list);
 827                         if (!ste) {
 828                                 mlx5dr_dbg(dmn, "failed adding collision entry, index: %d\n",
 829                                            index);
 830                                 return NULL;
 831                         }
 832                 }
 833         }
 834         return ste;
 835 }
 836
 837 static bool dr_rule_cmp_value_to_mask(u8 *mask, u8 *value,
 838                                       u32 s_idx, u32 e_idx)
 839 {
 840         u32 i;
 841
 842         for (i = s_idx; i < e_idx; i++) {
 843                 if (value[i] & ~mask[i]) {
 844                         pr_info("Rule parameters contains a value not specified by mask\n");
 845                         return false;
 846                 }
 847         }
 848         return true;
 849 }
 850
 851 static bool dr_rule_verify(struct mlx5dr_matcher *matcher,
 852                            struct mlx5dr_match_parameters *value,
 853                            struct mlx5dr_match_param *param)
 854 {
 855         u8 match_criteria = matcher->match_criteria;
 856         size_t value_size = value->match_sz;
 857         u8 *mask_p = (u8 *)&matcher->mask;
 858         u8 *param_p = (u8 *)param;
 859         u32 s_idx, e_idx;
 860
 861         if (!value_size ||
 862             (value_size > sizeof(struct mlx5dr_match_param) ||
 863              (value_size % sizeof(u32)))) {
 864                 mlx5dr_dbg(matcher->tbl->dmn, "Rule parameters length is incorrect\n");
 865                 return false;
 866         }
 867
 868         mlx5dr_ste_copy_param(matcher->match_criteria, param, value);
 869
 870         if (match_criteria & DR_MATCHER_CRITERIA_OUTER) {
 871                 s_idx = offsetof(struct mlx5dr_match_param, outer);
 872                 e_idx = min(s_idx + sizeof(param->outer), value_size);
 873
 874                 if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
 875                         mlx5dr_dbg(matcher->tbl->dmn, "Rule outer parameters contains a value not specified by mask\n");
 876                         return false;
 877                 }
 878         }
 879
 880         if (match_criteria & DR_MATCHER_CRITERIA_MISC) {
 881                 s_idx = offsetof(struct mlx5dr_match_param, misc);
 882                 e_idx = min(s_idx + sizeof(param->misc), value_size);
 883
 884                 if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
 885                         mlx5dr_dbg(matcher->tbl->dmn, "Rule misc parameters contains a value not specified by mask\n");
 886                         return false;
 887                 }
 888         }
 889
 890         if (match_criteria & DR_MATCHER_CRITERIA_INNER) {
 891                 s_idx = offsetof(struct mlx5dr_match_param, inner);
 892                 e_idx = min(s_idx + sizeof(param->inner), value_size);
 893
 894                 if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
 895                         mlx5dr_dbg(matcher->tbl->dmn, "Rule inner parameters contains a value not specified by mask\n");
 896                         return false;
 897                 }
 898         }
 899
 900         if (match_criteria & DR_MATCHER_CRITERIA_MISC2) {
 901                 s_idx = offsetof(struct mlx5dr_match_param, misc2);
 902                 e_idx = min(s_idx + sizeof(param->misc2), value_size);
 903
 904                 if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
 905                         mlx5dr_dbg(matcher->tbl->dmn, "Rule misc2 parameters contains a value not specified by mask\n");
 906                         return false;
 907                 }
 908         }
 909
 910         if (match_criteria & DR_MATCHER_CRITERIA_MISC3) {
 911                 s_idx = offsetof(struct mlx5dr_match_param, misc3);
 912                 e_idx = min(s_idx + sizeof(param->misc3), value_size);
 913
 914                 if (!dr_rule_cmp_value_to_mask(mask_p, param_p, s_idx, e_idx)) {
 915                         mlx5dr_dbg(matcher->tbl->dmn, "Rule misc3 parameters contains a value not specified by mask\n");
 916                         return false;
 917                 }
 918         }
 919         return true;
 920 }
 921
 922 static int dr_rule_destroy_rule_nic(struct mlx5dr_rule *rule,
 923                                     struct mlx5dr_rule_rx_tx *nic_rule)
 924 {
 925         dr_rule_clean_rule_members(rule, nic_rule);
 926         return 0;
 927 }
 928
 929 static int dr_rule_destroy_rule_fdb(struct mlx5dr_rule *rule)
 930 {
 931         dr_rule_destroy_rule_nic(rule, &rule->rx);
 932         dr_rule_destroy_rule_nic(rule, &rule->tx);
 933         return 0;
 934 }
 935
 936 static int dr_rule_destroy_rule(struct mlx5dr_rule *rule)
 937 {
 938         struct mlx5dr_domain *dmn = rule->matcher->tbl->dmn;
 939
 940         switch (dmn->type) {
 941         case MLX5DR_DOMAIN_TYPE_NIC_RX:
 942                 dr_rule_destroy_rule_nic(rule, &rule->rx);
 943                 break;
 944         case MLX5DR_DOMAIN_TYPE_NIC_TX:
 945                 dr_rule_destroy_rule_nic(rule, &rule->tx);
 946                 break;
 947         case MLX5DR_DOMAIN_TYPE_FDB:
 948                 dr_rule_destroy_rule_fdb(rule);
 949                 break;
 950         default:
 951                 return -EINVAL;
 952         }
 953
 954         dr_rule_remove_action_members(rule);
 955         kfree(rule);
 956         return 0;
 957 }
 958
 959 static bool dr_rule_is_ipv6(struct mlx5dr_match_param *param)
 960 {
 961         return (param->outer.ip_version == 6 ||
 962                 param->inner.ip_version == 6 ||
 963                 param->outer.ethertype == ETH_P_IPV6 ||
 964                 param->inner.ethertype == ETH_P_IPV6);
 965 }
 966
 967 static bool dr_rule_skip(enum mlx5dr_domain_type domain,
 968                          enum mlx5dr_ste_entry_type ste_type,
 969                          struct mlx5dr_match_param *mask,
 970                          struct mlx5dr_match_param *value)
 971 {
 972         if (domain != MLX5DR_DOMAIN_TYPE_FDB)
 973                 return false;
 974
 975         if (mask->misc.source_port) {
 976                 if (ste_type == MLX5DR_STE_TYPE_RX)
 977                         if (value->misc.source_port != WIRE_PORT)
 978                                 return true;
 979
 980                 if (ste_type == MLX5DR_STE_TYPE_TX)
 981                         if (value->misc.source_port == WIRE_PORT)
 982                                 return true;
 983         }
 984
 985         /* Metadata C can be used to describe the source vport */
 986         if (mask->misc2.metadata_reg_c_0) {
 987                 if (ste_type == MLX5DR_STE_TYPE_RX)
 988                         if ((value->misc2.metadata_reg_c_0 & WIRE_PORT) != WIRE_PORT)
 989                                 return true;
 990
 991                 if (ste_type == MLX5DR_STE_TYPE_TX)
 992                         if ((value->misc2.metadata_reg_c_0 & WIRE_PORT) == WIRE_PORT)
 993                                 return true;
 994         }
 995         return false;
 996 }
 997
 998 static int
 999 dr_rule_create_rule_nic(struct mlx5dr_rule *rule,
1000                         struct mlx5dr_rule_rx_tx *nic_rule,
1001                         struct mlx5dr_match_param *param,
1002                         size_t num_actions,
1003                         struct mlx5dr_action *actions[])
1004 {
1005         struct mlx5dr_ste_send_info *ste_info, *tmp_ste_info;
1006         struct mlx5dr_matcher *matcher = rule->matcher;
1007         struct mlx5dr_domain *dmn = matcher->tbl->dmn;
1008         struct mlx5dr_matcher_rx_tx *nic_matcher;
1009         struct mlx5dr_domain_rx_tx *nic_dmn;
1010         struct mlx5dr_ste_htbl *htbl = NULL;
1011         struct mlx5dr_ste_htbl *cur_htbl;
1012         struct mlx5dr_ste *ste = NULL;
1013         LIST_HEAD(send_ste_list);
1014         u8 *hw_ste_arr = NULL;
1015         u32 new_hw_ste_arr_sz;
1016         int ret, i;
1017
1018         nic_matcher = nic_rule->nic_matcher;
1019         nic_dmn = nic_matcher->nic_tbl->nic_dmn;
1020
1021         INIT_LIST_HEAD(&nic_rule->rule_members_list);
1022
1023         if (dr_rule_skip(dmn->type, nic_dmn->ste_type, &matcher->mask, param))
1024                 return 0;
1025
1026         ret = mlx5dr_matcher_select_builders(matcher,
1027                                              nic_matcher,
1028                                              dr_rule_is_ipv6(param));
1029         if (ret)
1030                 goto out_err;
1031
1032         hw_ste_arr = kzalloc(DR_RULE_MAX_STE_CHAIN * DR_STE_SIZE, GFP_KERNEL);
1033         if (!hw_ste_arr) {
1034                 ret = -ENOMEM;
1035                 goto out_err;
1036         }
1037
1038         /* Set the tag values inside the ste array */
1039         ret = mlx5dr_ste_build_ste_arr(matcher, nic_matcher, param, hw_ste_arr);
1040         if (ret)
1041                 goto free_hw_ste;
1042
1043         /* Set the actions values/addresses inside the ste array */
1044         ret = mlx5dr_actions_build_ste_arr(matcher, nic_matcher, actions,
1045                                            num_actions, hw_ste_arr,
1046                                            &new_hw_ste_arr_sz);
1047         if (ret)
1048                 goto free_hw_ste;
1049
1050         cur_htbl = nic_matcher->s_htbl;
1051
1052         /* Go over the array of STEs, and build dr_ste accordingly.
1053          * The loop is over only the builders which are equal or less to the
1054          * number of stes, in case we have actions that lives in other stes.
1055          */
1056         for (i = 0; i < nic_matcher->num_of_builders; i++) {
1057                 /* Calculate CRC and keep new ste entry */
1058                 u8 *cur_hw_ste_ent = hw_ste_arr + (i * DR_STE_SIZE);
1059
1060                 ste = dr_rule_handle_ste_branch(rule,
1061                                                 nic_rule,
1062                                                 &send_ste_list,
1063                                                 cur_htbl,
1064                                                 cur_hw_ste_ent,
1065                                                 i + 1,
1066                                                 &htbl);
1067                 if (!ste) {
1068                         mlx5dr_err(dmn, "Failed creating next branch\n");
1069                         ret = -ENOENT;
1070                         goto free_rule;
1071                 }
1072
1073                 cur_htbl = ste->next_htbl;
1074
1075                 /* Keep all STEs in the rule struct */
1076                 ret = dr_rule_add_member(nic_rule, ste);
1077                 if (ret) {
1078                         mlx5dr_dbg(dmn, "Failed adding rule member index %d\n", i);
1079                         goto free_ste;
1080                 }
1081
1082                 mlx5dr_ste_get(ste);
1083         }
1084
1085         /* Connect actions */
1086         ret = dr_rule_handle_action_stes(rule, nic_rule, &send_ste_list,
1087                                          ste, hw_ste_arr, new_hw_ste_arr_sz);
1088         if (ret) {
1089                 mlx5dr_dbg(dmn, "Failed apply actions\n");
1090                 goto free_rule;
1091         }
1092         ret = dr_rule_send_update_list(&send_ste_list, dmn, true);
1093         if (ret) {
1094                 mlx5dr_err(dmn, "Failed sending ste!\n");
1095                 goto free_rule;
1096         }
1097
1098         if (htbl)
1099                 mlx5dr_htbl_put(htbl);
1100
1101         return 0;
1102
1103 free_ste:
1104         mlx5dr_ste_put(ste, matcher, nic_matcher);
1105 free_rule:
1106         dr_rule_clean_rule_members(rule, nic_rule);
1107         /* Clean all ste_info's */
1108         list_for_each_entry_safe(ste_info, tmp_ste_info, &send_ste_list, send_list) {
1109                 list_del(&ste_info->send_list);
1110                 kfree(ste_info);
1111         }
1112 free_hw_ste:
1113         kfree(hw_ste_arr);
1114 out_err:
1115         return ret;
1116 }
1117
1118 static int
1119 dr_rule_create_rule_fdb(struct mlx5dr_rule *rule,
1120                         struct mlx5dr_match_param *param,
1121                         size_t num_actions,
1122                         struct mlx5dr_action *actions[])
1123 {
1124         struct mlx5dr_match_param copy_param = {};
1125         int ret;
1126
1127         /* Copy match_param since they will be consumed during the first
1128          * nic_rule insertion.
1129          */
1130         memcpy(&copy_param, param, sizeof(struct mlx5dr_match_param));
1131
1132         ret = dr_rule_create_rule_nic(rule, &rule->rx, param,
1133                                       num_actions, actions);
1134         if (ret)
1135                 return ret;
1136
1137         ret = dr_rule_create_rule_nic(rule, &rule->tx, &copy_param,
1138                                       num_actions, actions);
1139         if (ret)
1140                 goto destroy_rule_nic_rx;
1141
1142         return 0;
1143
1144 destroy_rule_nic_rx:
1145         dr_rule_destroy_rule_nic(rule, &rule->rx);
1146         return ret;
1147 }
1148
1149 static struct mlx5dr_rule *
1150 dr_rule_create_rule(struct mlx5dr_matcher *matcher,
1151                     struct mlx5dr_match_parameters *value,
1152                     size_t num_actions,
1153                     struct mlx5dr_action *actions[])
1154 {
1155         struct mlx5dr_domain *dmn = matcher->tbl->dmn;
1156         struct mlx5dr_match_param param = {};
1157         struct mlx5dr_rule *rule;
1158         int ret;
1159
1160         if (!dr_rule_verify(matcher, value, &param))
1161                 return NULL;
1162
1163         rule = kzalloc(sizeof(*rule), GFP_KERNEL);
1164         if (!rule)
1165                 return NULL;
1166
1167         rule->matcher = matcher;
1168         INIT_LIST_HEAD(&rule->rule_actions_list);
1169
1170         ret = dr_rule_add_action_members(rule, num_actions, actions);
1171         if (ret)
1172                 goto free_rule;
1173
1174         switch (dmn->type) {
1175         case MLX5DR_DOMAIN_TYPE_NIC_RX:
1176                 rule->rx.nic_matcher = &matcher->rx;
1177                 ret = dr_rule_create_rule_nic(rule, &rule->rx, &param,
1178                                               num_actions, actions);
1179                 break;
1180         case MLX5DR_DOMAIN_TYPE_NIC_TX:
1181                 rule->tx.nic_matcher = &matcher->tx;
1182                 ret = dr_rule_create_rule_nic(rule, &rule->tx, &param,
1183                                               num_actions, actions);
1184                 break;
1185         case MLX5DR_DOMAIN_TYPE_FDB:
1186                 rule->rx.nic_matcher = &matcher->rx;
1187                 rule->tx.nic_matcher = &matcher->tx;
1188                 ret = dr_rule_create_rule_fdb(rule, &param,
1189                                               num_actions, actions);
1190                 break;
1191         default:
1192                 ret = -EINVAL;
1193                 break;
1194         }
1195
1196         if (ret)
1197                 goto remove_action_members;
1198
1199         return rule;
1200
1201 remove_action_members:
1202         dr_rule_remove_action_members(rule);
1203 free_rule:
1204         kfree(rule);
1205         mlx5dr_info(dmn, "Failed creating rule\n");
1206         return NULL;
1207 }
1208
1209 struct mlx5dr_rule *mlx5dr_rule_create(struct mlx5dr_matcher *matcher,
1210                                        struct mlx5dr_match_parameters *value,
1211                                        size_t num_actions,
1212                                        struct mlx5dr_action *actions[])
1213 {
1214         struct mlx5dr_rule *rule;
1215
1216         mutex_lock(&matcher->tbl->dmn->mutex);
1217         refcount_inc(&matcher->refcount);
1218
1219         rule = dr_rule_create_rule(matcher, value, num_actions, actions);
1220         if (!rule)
1221                 refcount_dec(&matcher->refcount);
1222
1223         mutex_unlock(&matcher->tbl->dmn->mutex);
1224
1225         return rule;
1226 }
1227
1228 int mlx5dr_rule_destroy(struct mlx5dr_rule *rule)
1229 {
1230         struct mlx5dr_matcher *matcher = rule->matcher;
1231         struct mlx5dr_table *tbl = rule->matcher->tbl;
1232         int ret;
1233
1234         mutex_lock(&tbl->dmn->mutex);
1235
1236         ret = dr_rule_destroy_rule(rule);
1237
1238         mutex_unlock(&tbl->dmn->mutex);
1239
1240         if (!ret)
1241                 refcount_dec(&matcher->refcount);
1242         return ret;
1243 }