drivers/net/sfc/sfc_mae.c

   1 /* SPDX-License-Identifier: BSD-3-Clause
   2  *
   3  * Copyright(c) 2019-2021 Xilinx, Inc.
   4  * Copyright(c) 2019 Solarflare Communications Inc.
   5  *
   6  * This software was jointly developed between OKTET Labs (under contract
   7  * for Solarflare) and Solarflare Communications, Inc.
   8  */
   9
  10 #include <stdbool.h>
  11
  12 #include <rte_bitops.h>
  13 #include <rte_common.h>
  14 #include <rte_vxlan.h>
  15
  16 #include "efx.h"
  17
  18 #include "sfc.h"
  19 #include "sfc_flow_tunnel.h"
  20 #include "sfc_mae_counter.h"
  21 #include "sfc_log.h"
  22 #include "sfc_switch.h"
  23 #include "sfc_service.h"
  24
  25 static int
  26 sfc_mae_assign_entity_mport(struct sfc_adapter *sa,
  27                             efx_mport_sel_t *mportp)
  28 {
  29         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
  30
  31         return efx_mae_mport_by_pcie_function(encp->enc_pf, encp->enc_vf,
  32                                               mportp);
  33 }
  34
  35 static int
  36 sfc_mae_counter_registry_init(struct sfc_mae_counter_registry *registry,
  37                               uint32_t nb_counters_max)
  38 {
  39         return sfc_mae_counters_init(&registry->counters, nb_counters_max);
  40 }
  41
  42 static void
  43 sfc_mae_counter_registry_fini(struct sfc_mae_counter_registry *registry)
  44 {
  45         sfc_mae_counters_fini(&registry->counters);
  46 }
  47
  48 static int
  49 sfc_mae_internal_rule_find_empty_slot(struct sfc_adapter *sa,
  50                                       struct sfc_mae_rule **rule)
  51 {
  52         struct sfc_mae *mae = &sa->mae;
  53         struct sfc_mae_internal_rules *internal_rules = &mae->internal_rules;
  54         unsigned int entry;
  55         int rc;
  56
  57         for (entry = 0; entry < SFC_MAE_NB_RULES_MAX; entry++) {
  58                 if (internal_rules->rules[entry].spec == NULL)
  59                         break;
  60         }
  61
  62         if (entry == SFC_MAE_NB_RULES_MAX) {
  63                 rc = ENOSPC;
  64                 sfc_err(sa, "failed too many rules (%u rules used)", entry);
  65                 goto fail_too_many_rules;
  66         }
  67
  68         *rule = &internal_rules->rules[entry];
  69
  70         return 0;
  71
  72 fail_too_many_rules:
  73         return rc;
  74 }
  75
  76 int
  77 sfc_mae_rule_add_mport_match_deliver(struct sfc_adapter *sa,
  78                                      const efx_mport_sel_t *mport_match,
  79                                      const efx_mport_sel_t *mport_deliver,
  80                                      int prio, struct sfc_mae_rule **rulep)
  81 {
  82         struct sfc_mae *mae = &sa->mae;
  83         struct sfc_mae_rule *rule;
  84         int rc;
  85
  86         sfc_log_init(sa, "entry");
  87
  88         if (prio > 0 && (unsigned int)prio >= mae->nb_action_rule_prios_max) {
  89                 rc = EINVAL;
  90                 sfc_err(sa, "failed: invalid priority %d (max %u)", prio,
  91                         mae->nb_action_rule_prios_max);
  92                 goto fail_invalid_prio;
  93         }
  94         if (prio < 0)
  95                 prio = mae->nb_action_rule_prios_max - 1;
  96
  97         rc = sfc_mae_internal_rule_find_empty_slot(sa, &rule);
  98         if (rc != 0)
  99                 goto fail_find_empty_slot;
 100
 101         sfc_log_init(sa, "init MAE match spec");
 102         rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_ACTION,
 103                                      (uint32_t)prio, &rule->spec);
 104         if (rc != 0) {
 105                 sfc_err(sa, "failed to init MAE match spec");
 106                 goto fail_match_init;
 107         }
 108
 109         rc = efx_mae_match_spec_mport_set(rule->spec, mport_match, NULL);
 110         if (rc != 0) {
 111                 sfc_err(sa, "failed to get MAE match mport selector");
 112                 goto fail_mport_set;
 113         }
 114
 115         rc = efx_mae_action_set_spec_init(sa->nic, &rule->actions);
 116         if (rc != 0) {
 117                 sfc_err(sa, "failed to init MAE action set");
 118                 goto fail_action_init;
 119         }
 120
 121         rc = efx_mae_action_set_populate_deliver(rule->actions,
 122                                                  mport_deliver);
 123         if (rc != 0) {
 124                 sfc_err(sa, "failed to populate deliver action");
 125                 goto fail_populate_deliver;
 126         }
 127
 128         rc = efx_mae_action_set_alloc(sa->nic, rule->actions,
 129                                       &rule->action_set);
 130         if (rc != 0) {
 131                 sfc_err(sa, "failed to allocate action set");
 132                 goto fail_action_set_alloc;
 133         }
 134
 135         rc = efx_mae_action_rule_insert(sa->nic, rule->spec, NULL,
 136                                         &rule->action_set,
 137                                         &rule->rule_id);
 138         if (rc != 0) {
 139                 sfc_err(sa, "failed to insert action rule");
 140                 goto fail_rule_insert;
 141         }
 142
 143         *rulep = rule;
 144
 145         sfc_log_init(sa, "done");
 146
 147         return 0;
 148
 149 fail_rule_insert:
 150         efx_mae_action_set_free(sa->nic, &rule->action_set);
 151
 152 fail_action_set_alloc:
 153 fail_populate_deliver:
 154         efx_mae_action_set_spec_fini(sa->nic, rule->actions);
 155
 156 fail_action_init:
 157 fail_mport_set:
 158         efx_mae_match_spec_fini(sa->nic, rule->spec);
 159
 160 fail_match_init:
 161 fail_find_empty_slot:
 162 fail_invalid_prio:
 163         sfc_log_init(sa, "failed: %s", rte_strerror(rc));
 164         return rc;
 165 }
 166
 167 void
 168 sfc_mae_rule_del(struct sfc_adapter *sa, struct sfc_mae_rule *rule)
 169 {
 170         if (rule == NULL || rule->spec == NULL)
 171                 return;
 172
 173         efx_mae_action_rule_remove(sa->nic, &rule->rule_id);
 174         efx_mae_action_set_free(sa->nic, &rule->action_set);
 175         efx_mae_action_set_spec_fini(sa->nic, rule->actions);
 176         efx_mae_match_spec_fini(sa->nic, rule->spec);
 177
 178         rule->spec = NULL;
 179 }
 180
 181 int
 182 sfc_mae_attach(struct sfc_adapter *sa)
 183 {
 184         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
 185         struct sfc_mae_switch_port_request switch_port_request = {0};
 186         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
 187         efx_mport_sel_t entity_mport;
 188         struct sfc_mae *mae = &sa->mae;
 189         struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh;
 190         efx_mae_limits_t limits;
 191         int rc;
 192
 193         sfc_log_init(sa, "entry");
 194
 195         if (!encp->enc_mae_supported) {
 196                 mae->status = SFC_MAE_STATUS_UNSUPPORTED;
 197                 return 0;
 198         }
 199
 200         sfc_log_init(sa, "init MAE");
 201         rc = efx_mae_init(sa->nic);
 202         if (rc != 0)
 203                 goto fail_mae_init;
 204
 205         sfc_log_init(sa, "get MAE limits");
 206         rc = efx_mae_get_limits(sa->nic, &limits);
 207         if (rc != 0)
 208                 goto fail_mae_get_limits;
 209
 210         sfc_log_init(sa, "init MAE counter registry");
 211         rc = sfc_mae_counter_registry_init(&mae->counter_registry,
 212                                            limits.eml_max_n_counters);
 213         if (rc != 0) {
 214                 sfc_err(sa, "failed to init MAE counters registry for %u entries: %s",
 215                         limits.eml_max_n_counters, rte_strerror(rc));
 216                 goto fail_counter_registry_init;
 217         }
 218
 219         sfc_log_init(sa, "assign entity MPORT");
 220         rc = sfc_mae_assign_entity_mport(sa, &entity_mport);
 221         if (rc != 0)
 222                 goto fail_mae_assign_entity_mport;
 223
 224         sfc_log_init(sa, "assign RTE switch domain");
 225         rc = sfc_mae_assign_switch_domain(sa, &mae->switch_domain_id);
 226         if (rc != 0)
 227                 goto fail_mae_assign_switch_domain;
 228
 229         sfc_log_init(sa, "assign RTE switch port");
 230         switch_port_request.type = SFC_MAE_SWITCH_PORT_INDEPENDENT;
 231         switch_port_request.entity_mportp = &entity_mport;
 232         /* RTE ethdev MPORT matches that of the entity for independent ports. */
 233         switch_port_request.ethdev_mportp = &entity_mport;
 234         switch_port_request.ethdev_port_id = sas->port_id;
 235         rc = sfc_mae_assign_switch_port(mae->switch_domain_id,
 236                                         &switch_port_request,
 237                                         &mae->switch_port_id);
 238         if (rc != 0)
 239                 goto fail_mae_assign_switch_port;
 240
 241         sfc_log_init(sa, "allocate encap. header bounce buffer");
 242         bounce_eh->buf_size = limits.eml_encap_header_size_limit;
 243         bounce_eh->buf = rte_malloc("sfc_mae_bounce_eh",
 244                                     bounce_eh->buf_size, 0);
 245         if (bounce_eh->buf == NULL)
 246                 goto fail_mae_alloc_bounce_eh;
 247
 248         mae->status = SFC_MAE_STATUS_SUPPORTED;
 249         mae->nb_outer_rule_prios_max = limits.eml_max_n_outer_prios;
 250         mae->nb_action_rule_prios_max = limits.eml_max_n_action_prios;
 251         mae->encap_types_supported = limits.eml_encap_types_supported;
 252         TAILQ_INIT(&mae->outer_rules);
 253         TAILQ_INIT(&mae->encap_headers);
 254         TAILQ_INIT(&mae->action_sets);
 255
 256         sfc_log_init(sa, "done");
 257
 258         return 0;
 259
 260 fail_mae_alloc_bounce_eh:
 261 fail_mae_assign_switch_port:
 262 fail_mae_assign_switch_domain:
 263 fail_mae_assign_entity_mport:
 264         sfc_mae_counter_registry_fini(&mae->counter_registry);
 265
 266 fail_counter_registry_init:
 267 fail_mae_get_limits:
 268         efx_mae_fini(sa->nic);
 269
 270 fail_mae_init:
 271         sfc_log_init(sa, "failed %d", rc);
 272
 273         return rc;
 274 }
 275
 276 void
 277 sfc_mae_detach(struct sfc_adapter *sa)
 278 {
 279         struct sfc_mae *mae = &sa->mae;
 280         enum sfc_mae_status status_prev = mae->status;
 281
 282         sfc_log_init(sa, "entry");
 283
 284         mae->nb_action_rule_prios_max = 0;
 285         mae->status = SFC_MAE_STATUS_UNKNOWN;
 286
 287         if (status_prev != SFC_MAE_STATUS_SUPPORTED)
 288                 return;
 289
 290         rte_free(mae->bounce_eh.buf);
 291         sfc_mae_counter_registry_fini(&mae->counter_registry);
 292
 293         efx_mae_fini(sa->nic);
 294
 295         sfc_log_init(sa, "done");
 296 }
 297
 298 static struct sfc_mae_outer_rule *
 299 sfc_mae_outer_rule_attach(struct sfc_adapter *sa,
 300                           const efx_mae_match_spec_t *match_spec,
 301                           efx_tunnel_protocol_t encap_type)
 302 {
 303         struct sfc_mae_outer_rule *rule;
 304         struct sfc_mae *mae = &sa->mae;
 305
 306         SFC_ASSERT(sfc_adapter_is_locked(sa));
 307
 308         TAILQ_FOREACH(rule, &mae->outer_rules, entries) {
 309                 if (efx_mae_match_specs_equal(rule->match_spec, match_spec) &&
 310                     rule->encap_type == encap_type) {
 311                         sfc_dbg(sa, "attaching to outer_rule=%p", rule);
 312                         ++(rule->refcnt);
 313                         return rule;
 314                 }
 315         }
 316
 317         return NULL;
 318 }
 319
 320 static int
 321 sfc_mae_outer_rule_add(struct sfc_adapter *sa,
 322                        efx_mae_match_spec_t *match_spec,
 323                        efx_tunnel_protocol_t encap_type,
 324                        struct sfc_mae_outer_rule **rulep)
 325 {
 326         struct sfc_mae_outer_rule *rule;
 327         struct sfc_mae *mae = &sa->mae;
 328
 329         SFC_ASSERT(sfc_adapter_is_locked(sa));
 330
 331         rule = rte_zmalloc("sfc_mae_outer_rule", sizeof(*rule), 0);
 332         if (rule == NULL)
 333                 return ENOMEM;
 334
 335         rule->refcnt = 1;
 336         rule->match_spec = match_spec;
 337         rule->encap_type = encap_type;
 338
 339         rule->fw_rsrc.rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 340
 341         TAILQ_INSERT_TAIL(&mae->outer_rules, rule, entries);
 342
 343         *rulep = rule;
 344
 345         sfc_dbg(sa, "added outer_rule=%p", rule);
 346
 347         return 0;
 348 }
 349
 350 static void
 351 sfc_mae_outer_rule_del(struct sfc_adapter *sa,
 352                        struct sfc_mae_outer_rule *rule)
 353 {
 354         struct sfc_mae *mae = &sa->mae;
 355
 356         SFC_ASSERT(sfc_adapter_is_locked(sa));
 357         SFC_ASSERT(rule->refcnt != 0);
 358
 359         --(rule->refcnt);
 360
 361         if (rule->refcnt != 0)
 362                 return;
 363
 364         if (rule->fw_rsrc.rule_id.id != EFX_MAE_RSRC_ID_INVALID ||
 365             rule->fw_rsrc.refcnt != 0) {
 366                 sfc_err(sa, "deleting outer_rule=%p abandons its FW resource: OR_ID=0x%08x, refcnt=%u",
 367                         rule, rule->fw_rsrc.rule_id.id, rule->fw_rsrc.refcnt);
 368         }
 369
 370         efx_mae_match_spec_fini(sa->nic, rule->match_spec);
 371
 372         TAILQ_REMOVE(&mae->outer_rules, rule, entries);
 373         rte_free(rule);
 374
 375         sfc_dbg(sa, "deleted outer_rule=%p", rule);
 376 }
 377
 378 static int
 379 sfc_mae_outer_rule_enable(struct sfc_adapter *sa,
 380                           struct sfc_mae_outer_rule *rule,
 381                           efx_mae_match_spec_t *match_spec_action)
 382 {
 383         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 384         int rc;
 385
 386         SFC_ASSERT(sfc_adapter_is_locked(sa));
 387
 388         if (fw_rsrc->refcnt == 0) {
 389                 SFC_ASSERT(fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 390                 SFC_ASSERT(rule->match_spec != NULL);
 391
 392                 rc = efx_mae_outer_rule_insert(sa->nic, rule->match_spec,
 393                                                rule->encap_type,
 394                                                &fw_rsrc->rule_id);
 395                 if (rc != 0) {
 396                         sfc_err(sa, "failed to enable outer_rule=%p: %s",
 397                                 rule, strerror(rc));
 398                         return rc;
 399                 }
 400         }
 401
 402         if (match_spec_action == NULL)
 403                 goto skip_action_rule;
 404
 405         rc = efx_mae_match_spec_outer_rule_id_set(match_spec_action,
 406                                                   &fw_rsrc->rule_id);
 407         if (rc != 0) {
 408                 if (fw_rsrc->refcnt == 0) {
 409                         (void)efx_mae_outer_rule_remove(sa->nic,
 410                                                         &fw_rsrc->rule_id);
 411                         fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 412                 }
 413
 414                 sfc_err(sa, "can't match on outer rule ID: %s", strerror(rc));
 415
 416                 return rc;
 417         }
 418
 419 skip_action_rule:
 420         if (fw_rsrc->refcnt == 0) {
 421                 sfc_dbg(sa, "enabled outer_rule=%p: OR_ID=0x%08x",
 422                         rule, fw_rsrc->rule_id.id);
 423         }
 424
 425         ++(fw_rsrc->refcnt);
 426
 427         return 0;
 428 }
 429
 430 static void
 431 sfc_mae_outer_rule_disable(struct sfc_adapter *sa,
 432                            struct sfc_mae_outer_rule *rule)
 433 {
 434         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 435         int rc;
 436
 437         SFC_ASSERT(sfc_adapter_is_locked(sa));
 438
 439         if (fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID ||
 440             fw_rsrc->refcnt == 0) {
 441                 sfc_err(sa, "failed to disable outer_rule=%p: already disabled; OR_ID=0x%08x, refcnt=%u",
 442                         rule, fw_rsrc->rule_id.id, fw_rsrc->refcnt);
 443                 return;
 444         }
 445
 446         if (fw_rsrc->refcnt == 1) {
 447                 rc = efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id);
 448                 if (rc == 0) {
 449                         sfc_dbg(sa, "disabled outer_rule=%p with OR_ID=0x%08x",
 450                                 rule, fw_rsrc->rule_id.id);
 451                 } else {
 452                         sfc_err(sa, "failed to disable outer_rule=%p with OR_ID=0x%08x: %s",
 453                                 rule, fw_rsrc->rule_id.id, strerror(rc));
 454                 }
 455                 fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 456         }
 457
 458         --(fw_rsrc->refcnt);
 459 }
 460
 461 static struct sfc_mae_encap_header *
 462 sfc_mae_encap_header_attach(struct sfc_adapter *sa,
 463                             const struct sfc_mae_bounce_eh *bounce_eh)
 464 {
 465         struct sfc_mae_encap_header *encap_header;
 466         struct sfc_mae *mae = &sa->mae;
 467
 468         SFC_ASSERT(sfc_adapter_is_locked(sa));
 469
 470         TAILQ_FOREACH(encap_header, &mae->encap_headers, entries) {
 471                 if (encap_header->size == bounce_eh->size &&
 472                     memcmp(encap_header->buf, bounce_eh->buf,
 473                            bounce_eh->size) == 0) {
 474                         sfc_dbg(sa, "attaching to encap_header=%p",
 475                                 encap_header);
 476                         ++(encap_header->refcnt);
 477                         return encap_header;
 478                 }
 479         }
 480
 481         return NULL;
 482 }
 483
 484 static int
 485 sfc_mae_encap_header_add(struct sfc_adapter *sa,
 486                          const struct sfc_mae_bounce_eh *bounce_eh,
 487                          struct sfc_mae_encap_header **encap_headerp)
 488 {
 489         struct sfc_mae_encap_header *encap_header;
 490         struct sfc_mae *mae = &sa->mae;
 491
 492         SFC_ASSERT(sfc_adapter_is_locked(sa));
 493
 494         encap_header = rte_zmalloc("sfc_mae_encap_header",
 495                                    sizeof(*encap_header), 0);
 496         if (encap_header == NULL)
 497                 return ENOMEM;
 498
 499         encap_header->size = bounce_eh->size;
 500
 501         encap_header->buf = rte_malloc("sfc_mae_encap_header_buf",
 502                                        encap_header->size, 0);
 503         if (encap_header->buf == NULL) {
 504                 rte_free(encap_header);
 505                 return ENOMEM;
 506         }
 507
 508         rte_memcpy(encap_header->buf, bounce_eh->buf, bounce_eh->size);
 509
 510         encap_header->refcnt = 1;
 511         encap_header->type = bounce_eh->type;
 512         encap_header->fw_rsrc.eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 513
 514         TAILQ_INSERT_TAIL(&mae->encap_headers, encap_header, entries);
 515
 516         *encap_headerp = encap_header;
 517
 518         sfc_dbg(sa, "added encap_header=%p", encap_header);
 519
 520         return 0;
 521 }
 522
 523 static void
 524 sfc_mae_encap_header_del(struct sfc_adapter *sa,
 525                        struct sfc_mae_encap_header *encap_header)
 526 {
 527         struct sfc_mae *mae = &sa->mae;
 528
 529         if (encap_header == NULL)
 530                 return;
 531
 532         SFC_ASSERT(sfc_adapter_is_locked(sa));
 533         SFC_ASSERT(encap_header->refcnt != 0);
 534
 535         --(encap_header->refcnt);
 536
 537         if (encap_header->refcnt != 0)
 538                 return;
 539
 540         if (encap_header->fw_rsrc.eh_id.id != EFX_MAE_RSRC_ID_INVALID ||
 541             encap_header->fw_rsrc.refcnt != 0) {
 542                 sfc_err(sa, "deleting encap_header=%p abandons its FW resource: EH_ID=0x%08x, refcnt=%u",
 543                         encap_header, encap_header->fw_rsrc.eh_id.id,
 544                         encap_header->fw_rsrc.refcnt);
 545         }
 546
 547         TAILQ_REMOVE(&mae->encap_headers, encap_header, entries);
 548         rte_free(encap_header->buf);
 549         rte_free(encap_header);
 550
 551         sfc_dbg(sa, "deleted encap_header=%p", encap_header);
 552 }
 553
 554 static int
 555 sfc_mae_encap_header_enable(struct sfc_adapter *sa,
 556                             struct sfc_mae_encap_header *encap_header,
 557                             efx_mae_actions_t *action_set_spec)
 558 {
 559         struct sfc_mae_fw_rsrc *fw_rsrc;
 560         int rc;
 561
 562         if (encap_header == NULL)
 563                 return 0;
 564
 565         SFC_ASSERT(sfc_adapter_is_locked(sa));
 566
 567         fw_rsrc = &encap_header->fw_rsrc;
 568
 569         if (fw_rsrc->refcnt == 0) {
 570                 SFC_ASSERT(fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID);
 571                 SFC_ASSERT(encap_header->buf != NULL);
 572                 SFC_ASSERT(encap_header->size != 0);
 573
 574                 rc = efx_mae_encap_header_alloc(sa->nic, encap_header->type,
 575                                                 encap_header->buf,
 576                                                 encap_header->size,
 577                                                 &fw_rsrc->eh_id);
 578                 if (rc != 0) {
 579                         sfc_err(sa, "failed to enable encap_header=%p: %s",
 580                                 encap_header, strerror(rc));
 581                         return rc;
 582                 }
 583         }
 584
 585         rc = efx_mae_action_set_fill_in_eh_id(action_set_spec,
 586                                               &fw_rsrc->eh_id);
 587         if (rc != 0) {
 588                 if (fw_rsrc->refcnt == 0) {
 589                         (void)efx_mae_encap_header_free(sa->nic,
 590                                                         &fw_rsrc->eh_id);
 591                         fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 592                 }
 593
 594                 sfc_err(sa, "can't fill in encap. header ID: %s", strerror(rc));
 595
 596                 return rc;
 597         }
 598
 599         if (fw_rsrc->refcnt == 0) {
 600                 sfc_dbg(sa, "enabled encap_header=%p: EH_ID=0x%08x",
 601                         encap_header, fw_rsrc->eh_id.id);
 602         }
 603
 604         ++(fw_rsrc->refcnt);
 605
 606         return 0;
 607 }
 608
 609 static void
 610 sfc_mae_encap_header_disable(struct sfc_adapter *sa,
 611                              struct sfc_mae_encap_header *encap_header)
 612 {
 613         struct sfc_mae_fw_rsrc *fw_rsrc;
 614         int rc;
 615
 616         if (encap_header == NULL)
 617                 return;
 618
 619         SFC_ASSERT(sfc_adapter_is_locked(sa));
 620
 621         fw_rsrc = &encap_header->fw_rsrc;
 622
 623         if (fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID ||
 624             fw_rsrc->refcnt == 0) {
 625                 sfc_err(sa, "failed to disable encap_header=%p: already disabled; EH_ID=0x%08x, refcnt=%u",
 626                         encap_header, fw_rsrc->eh_id.id, fw_rsrc->refcnt);
 627                 return;
 628         }
 629
 630         if (fw_rsrc->refcnt == 1) {
 631                 rc = efx_mae_encap_header_free(sa->nic, &fw_rsrc->eh_id);
 632                 if (rc == 0) {
 633                         sfc_dbg(sa, "disabled encap_header=%p with EH_ID=0x%08x",
 634                                 encap_header, fw_rsrc->eh_id.id);
 635                 } else {
 636                         sfc_err(sa, "failed to disable encap_header=%p with EH_ID=0x%08x: %s",
 637                                 encap_header, fw_rsrc->eh_id.id, strerror(rc));
 638                 }
 639                 fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 640         }
 641
 642         --(fw_rsrc->refcnt);
 643 }
 644
 645 static int
 646 sfc_mae_counters_enable(struct sfc_adapter *sa,
 647                         struct sfc_mae_counter_id *counters,
 648                         unsigned int n_counters,
 649                         efx_mae_actions_t *action_set_spec)
 650 {
 651         int rc;
 652
 653         sfc_log_init(sa, "entry");
 654
 655         if (n_counters == 0) {
 656                 sfc_log_init(sa, "no counters - skip");
 657                 return 0;
 658         }
 659
 660         SFC_ASSERT(sfc_adapter_is_locked(sa));
 661         SFC_ASSERT(n_counters == 1);
 662
 663         rc = sfc_mae_counter_enable(sa, &counters[0]);
 664         if (rc != 0) {
 665                 sfc_err(sa, "failed to enable MAE counter %u: %s",
 666                         counters[0].mae_id.id, rte_strerror(rc));
 667                 goto fail_counter_add;
 668         }
 669
 670         rc = efx_mae_action_set_fill_in_counter_id(action_set_spec,
 671                                                    &counters[0].mae_id);
 672         if (rc != 0) {
 673                 sfc_err(sa, "failed to fill in MAE counter %u in action set: %s",
 674                         counters[0].mae_id.id, rte_strerror(rc));
 675                 goto fail_fill_in_id;
 676         }
 677
 678         return 0;
 679
 680 fail_fill_in_id:
 681         (void)sfc_mae_counter_disable(sa, &counters[0]);
 682
 683 fail_counter_add:
 684         sfc_log_init(sa, "failed: %s", rte_strerror(rc));
 685         return rc;
 686 }
 687
 688 static int
 689 sfc_mae_counters_disable(struct sfc_adapter *sa,
 690                          struct sfc_mae_counter_id *counters,
 691                          unsigned int n_counters)
 692 {
 693         if (n_counters == 0)
 694                 return 0;
 695
 696         SFC_ASSERT(sfc_adapter_is_locked(sa));
 697         SFC_ASSERT(n_counters == 1);
 698
 699         if (counters[0].mae_id.id == EFX_MAE_RSRC_ID_INVALID) {
 700                 sfc_err(sa, "failed to disable: already disabled");
 701                 return EALREADY;
 702         }
 703
 704         return sfc_mae_counter_disable(sa, &counters[0]);
 705 }
 706
 707 static struct sfc_mae_action_set *
 708 sfc_mae_action_set_attach(struct sfc_adapter *sa,
 709                           const struct sfc_mae_encap_header *encap_header,
 710                           unsigned int n_count,
 711                           const efx_mae_actions_t *spec)
 712 {
 713         struct sfc_mae_action_set *action_set;
 714         struct sfc_mae *mae = &sa->mae;
 715
 716         SFC_ASSERT(sfc_adapter_is_locked(sa));
 717
 718         TAILQ_FOREACH(action_set, &mae->action_sets, entries) {
 719                 /*
 720                  * Shared counters are not supported, hence action sets with
 721                  * COUNT are not attachable.
 722                  */
 723                 if (action_set->encap_header == encap_header &&
 724                     n_count == 0 &&
 725                     efx_mae_action_set_specs_equal(action_set->spec, spec)) {
 726                         sfc_dbg(sa, "attaching to action_set=%p", action_set);
 727                         ++(action_set->refcnt);
 728                         return action_set;
 729                 }
 730         }
 731
 732         return NULL;
 733 }
 734
 735 static int
 736 sfc_mae_action_set_add(struct sfc_adapter *sa,
 737                        const struct rte_flow_action actions[],
 738                        efx_mae_actions_t *spec,
 739                        struct sfc_mae_encap_header *encap_header,
 740                        unsigned int n_counters,
 741                        struct sfc_mae_action_set **action_setp)
 742 {
 743         struct sfc_mae_action_set *action_set;
 744         struct sfc_mae *mae = &sa->mae;
 745         unsigned int i;
 746
 747         SFC_ASSERT(sfc_adapter_is_locked(sa));
 748
 749         action_set = rte_zmalloc("sfc_mae_action_set", sizeof(*action_set), 0);
 750         if (action_set == NULL) {
 751                 sfc_err(sa, "failed to alloc action set");
 752                 return ENOMEM;
 753         }
 754
 755         if (n_counters > 0) {
 756                 const struct rte_flow_action *action;
 757
 758                 action_set->counters = rte_malloc("sfc_mae_counter_ids",
 759                         sizeof(action_set->counters[0]) * n_counters, 0);
 760                 if (action_set->counters == NULL) {
 761                         rte_free(action_set);
 762                         sfc_err(sa, "failed to alloc counters");
 763                         return ENOMEM;
 764                 }
 765
 766                 for (action = actions, i = 0;
 767                      action->type != RTE_FLOW_ACTION_TYPE_END && i < n_counters;
 768                      ++action) {
 769                         const struct rte_flow_action_count *conf;
 770
 771                         if (action->type != RTE_FLOW_ACTION_TYPE_COUNT)
 772                                 continue;
 773
 774                         conf = action->conf;
 775
 776                         action_set->counters[i].mae_id.id =
 777                                 EFX_MAE_RSRC_ID_INVALID;
 778                         action_set->counters[i].rte_id = conf->id;
 779                         i++;
 780                 }
 781                 action_set->n_counters = n_counters;
 782         }
 783
 784         action_set->refcnt = 1;
 785         action_set->spec = spec;
 786         action_set->encap_header = encap_header;
 787
 788         action_set->fw_rsrc.aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 789
 790         TAILQ_INSERT_TAIL(&mae->action_sets, action_set, entries);
 791
 792         *action_setp = action_set;
 793
 794         sfc_dbg(sa, "added action_set=%p", action_set);
 795
 796         return 0;
 797 }
 798
 799 static void
 800 sfc_mae_action_set_del(struct sfc_adapter *sa,
 801                        struct sfc_mae_action_set *action_set)
 802 {
 803         struct sfc_mae *mae = &sa->mae;
 804
 805         SFC_ASSERT(sfc_adapter_is_locked(sa));
 806         SFC_ASSERT(action_set->refcnt != 0);
 807
 808         --(action_set->refcnt);
 809
 810         if (action_set->refcnt != 0)
 811                 return;
 812
 813         if (action_set->fw_rsrc.aset_id.id != EFX_MAE_RSRC_ID_INVALID ||
 814             action_set->fw_rsrc.refcnt != 0) {
 815                 sfc_err(sa, "deleting action_set=%p abandons its FW resource: AS_ID=0x%08x, refcnt=%u",
 816                         action_set, action_set->fw_rsrc.aset_id.id,
 817                         action_set->fw_rsrc.refcnt);
 818         }
 819
 820         efx_mae_action_set_spec_fini(sa->nic, action_set->spec);
 821         sfc_mae_encap_header_del(sa, action_set->encap_header);
 822         if (action_set->n_counters > 0) {
 823                 SFC_ASSERT(action_set->n_counters == 1);
 824                 SFC_ASSERT(action_set->counters[0].mae_id.id ==
 825                            EFX_MAE_RSRC_ID_INVALID);
 826                 rte_free(action_set->counters);
 827         }
 828         TAILQ_REMOVE(&mae->action_sets, action_set, entries);
 829         rte_free(action_set);
 830
 831         sfc_dbg(sa, "deleted action_set=%p", action_set);
 832 }
 833
 834 static int
 835 sfc_mae_action_set_enable(struct sfc_adapter *sa,
 836                           struct sfc_mae_action_set *action_set)
 837 {
 838         struct sfc_mae_encap_header *encap_header = action_set->encap_header;
 839         struct sfc_mae_counter_id *counters = action_set->counters;
 840         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 841         int rc;
 842
 843         SFC_ASSERT(sfc_adapter_is_locked(sa));
 844
 845         if (fw_rsrc->refcnt == 0) {
 846                 SFC_ASSERT(fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID);
 847                 SFC_ASSERT(action_set->spec != NULL);
 848
 849                 rc = sfc_mae_encap_header_enable(sa, encap_header,
 850                                                  action_set->spec);
 851                 if (rc != 0)
 852                         return rc;
 853
 854                 rc = sfc_mae_counters_enable(sa, counters,
 855                                              action_set->n_counters,
 856                                              action_set->spec);
 857                 if (rc != 0) {
 858                         sfc_err(sa, "failed to enable %u MAE counters: %s",
 859                                 action_set->n_counters, rte_strerror(rc));
 860
 861                         sfc_mae_encap_header_disable(sa, encap_header);
 862                         return rc;
 863                 }
 864
 865                 rc = efx_mae_action_set_alloc(sa->nic, action_set->spec,
 866                                               &fw_rsrc->aset_id);
 867                 if (rc != 0) {
 868                         sfc_err(sa, "failed to enable action_set=%p: %s",
 869                                 action_set, strerror(rc));
 870
 871                         (void)sfc_mae_counters_disable(sa, counters,
 872                                                        action_set->n_counters);
 873                         sfc_mae_encap_header_disable(sa, encap_header);
 874                         return rc;
 875                 }
 876
 877                 sfc_dbg(sa, "enabled action_set=%p: AS_ID=0x%08x",
 878                         action_set, fw_rsrc->aset_id.id);
 879         }
 880
 881         ++(fw_rsrc->refcnt);
 882
 883         return 0;
 884 }
 885
 886 static void
 887 sfc_mae_action_set_disable(struct sfc_adapter *sa,
 888                            struct sfc_mae_action_set *action_set)
 889 {
 890         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 891         int rc;
 892
 893         SFC_ASSERT(sfc_adapter_is_locked(sa));
 894
 895         if (fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID ||
 896             fw_rsrc->refcnt == 0) {
 897                 sfc_err(sa, "failed to disable action_set=%p: already disabled; AS_ID=0x%08x, refcnt=%u",
 898                         action_set, fw_rsrc->aset_id.id, fw_rsrc->refcnt);
 899                 return;
 900         }
 901
 902         if (fw_rsrc->refcnt == 1) {
 903                 rc = efx_mae_action_set_free(sa->nic, &fw_rsrc->aset_id);
 904                 if (rc == 0) {
 905                         sfc_dbg(sa, "disabled action_set=%p with AS_ID=0x%08x",
 906                                 action_set, fw_rsrc->aset_id.id);
 907                 } else {
 908                         sfc_err(sa, "failed to disable action_set=%p with AS_ID=0x%08x: %s",
 909                                 action_set, fw_rsrc->aset_id.id, strerror(rc));
 910                 }
 911                 fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 912
 913                 rc = sfc_mae_counters_disable(sa, action_set->counters,
 914                                               action_set->n_counters);
 915                 if (rc != 0) {
 916                         sfc_err(sa, "failed to disable %u MAE counters: %s",
 917                                 action_set->n_counters, rte_strerror(rc));
 918                 }
 919
 920                 sfc_mae_encap_header_disable(sa, action_set->encap_header);
 921         }
 922
 923         --(fw_rsrc->refcnt);
 924 }
 925
 926 void
 927 sfc_mae_flow_cleanup(struct sfc_adapter *sa,
 928                      struct rte_flow *flow)
 929 {
 930         struct sfc_flow_spec *spec;
 931         struct sfc_flow_spec_mae *spec_mae;
 932
 933         if (flow == NULL)
 934                 return;
 935
 936         spec = &flow->spec;
 937
 938         if (spec == NULL)
 939                 return;
 940
 941         spec_mae = &spec->mae;
 942
 943         if (spec_mae->ft != NULL) {
 944                 if (spec_mae->ft_rule_type == SFC_FT_RULE_JUMP)
 945                         spec_mae->ft->jump_rule_is_set = B_FALSE;
 946
 947                 SFC_ASSERT(spec_mae->ft->refcnt != 0);
 948                 --(spec_mae->ft->refcnt);
 949         }
 950
 951         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 952
 953         if (spec_mae->outer_rule != NULL)
 954                 sfc_mae_outer_rule_del(sa, spec_mae->outer_rule);
 955
 956         if (spec_mae->action_set != NULL)
 957                 sfc_mae_action_set_del(sa, spec_mae->action_set);
 958
 959         if (spec_mae->match_spec != NULL)
 960                 efx_mae_match_spec_fini(sa->nic, spec_mae->match_spec);
 961 }
 962
 963 static int
 964 sfc_mae_set_ethertypes(struct sfc_mae_parse_ctx *ctx)
 965 {
 966         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
 967         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
 968         const efx_mae_field_id_t field_ids[] = {
 969                 EFX_MAE_FIELD_VLAN0_PROTO_BE,
 970                 EFX_MAE_FIELD_VLAN1_PROTO_BE,
 971         };
 972         const struct sfc_mae_ethertype *et;
 973         unsigned int i;
 974         int rc;
 975
 976         /*
 977          * In accordance with RTE flow API convention, the innermost L2
 978          * item's "type" ("inner_type") is a L3 EtherType. If there is
 979          * no L3 item, it's 0x0000/0x0000.
 980          */
 981         et = &pdata->ethertypes[pdata->nb_vlan_tags];
 982         rc = efx_mae_match_spec_field_set(ctx->match_spec,
 983                                           fremap[EFX_MAE_FIELD_ETHER_TYPE_BE],
 984                                           sizeof(et->value),
 985                                           (const uint8_t *)&et->value,
 986                                           sizeof(et->mask),
 987                                           (const uint8_t *)&et->mask);
 988         if (rc != 0)
 989                 return rc;
 990
 991         /*
 992          * sfc_mae_rule_parse_item_vlan() has already made sure
 993          * that pdata->nb_vlan_tags does not exceed this figure.
 994          */
 995         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
 996
 997         for (i = 0; i < pdata->nb_vlan_tags; ++i) {
 998                 et = &pdata->ethertypes[i];
 999
1000                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
1001                                                   fremap[field_ids[i]],
1002                                                   sizeof(et->value),
1003                                                   (const uint8_t *)&et->value,
1004                                                   sizeof(et->mask),
1005                                                   (const uint8_t *)&et->mask);
1006                 if (rc != 0)
1007                         return rc;
1008         }
1009
1010         return 0;
1011 }
1012
1013 static int
1014 sfc_mae_rule_process_pattern_data(struct sfc_mae_parse_ctx *ctx,
1015                                   struct rte_flow_error *error)
1016 {
1017         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
1018         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
1019         struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
1020         const rte_be16_t supported_tpids[] = {
1021                 /* VLAN standard TPID (always the first element) */
1022                 RTE_BE16(RTE_ETHER_TYPE_VLAN),
1023
1024                 /* Double-tagging TPIDs */
1025                 RTE_BE16(RTE_ETHER_TYPE_QINQ),
1026                 RTE_BE16(RTE_ETHER_TYPE_QINQ1),
1027                 RTE_BE16(RTE_ETHER_TYPE_QINQ2),
1028                 RTE_BE16(RTE_ETHER_TYPE_QINQ3),
1029         };
1030         bool enforce_tag_presence[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {0};
1031         unsigned int nb_supported_tpids = RTE_DIM(supported_tpids);
1032         unsigned int ethertype_idx;
1033         const uint8_t *valuep;
1034         const uint8_t *maskp;
1035         int rc;
1036
1037         if (pdata->innermost_ethertype_restriction.mask != 0 &&
1038             pdata->nb_vlan_tags < SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1039                 /*
1040                  * If a single item VLAN is followed by a L3 item, value
1041                  * of "type" in item ETH can't be a double-tagging TPID.
1042                  */
1043                 nb_supported_tpids = 1;
1044         }
1045
1046         /*
1047          * sfc_mae_rule_parse_item_vlan() has already made sure
1048          * that pdata->nb_vlan_tags does not exceed this figure.
1049          */
1050         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1051
1052         for (ethertype_idx = 0;
1053              ethertype_idx < pdata->nb_vlan_tags; ++ethertype_idx) {
1054                 rte_be16_t tpid_v = ethertypes[ethertype_idx].value;
1055                 rte_be16_t tpid_m = ethertypes[ethertype_idx].mask;
1056                 unsigned int tpid_idx;
1057
1058                 /*
1059                  * This loop can have only two iterations. On the second one,
1060                  * drop outer tag presence enforcement bit because the inner
1061                  * tag presence automatically assumes that for the outer tag.
1062                  */
1063                 enforce_tag_presence[0] = B_FALSE;
1064
1065                 if (tpid_m == RTE_BE16(0)) {
1066                         if (pdata->tci_masks[ethertype_idx] == RTE_BE16(0))
1067                                 enforce_tag_presence[ethertype_idx] = B_TRUE;
1068
1069                         /* No match on this field, and no value check. */
1070                         nb_supported_tpids = 1;
1071                         continue;
1072                 }
1073
1074                 /* Exact match is supported only. */
1075                 if (tpid_m != RTE_BE16(0xffff)) {
1076                         sfc_err(ctx->sa, "TPID mask must be 0x0 or 0xffff; got 0x%04x",
1077                                 rte_be_to_cpu_16(tpid_m));
1078                         rc = EINVAL;
1079                         goto fail;
1080                 }
1081
1082                 for (tpid_idx = pdata->nb_vlan_tags - ethertype_idx - 1;
1083                      tpid_idx < nb_supported_tpids; ++tpid_idx) {
1084                         if (tpid_v == supported_tpids[tpid_idx])
1085                                 break;
1086                 }
1087
1088                 if (tpid_idx == nb_supported_tpids) {
1089                         sfc_err(ctx->sa, "TPID 0x%04x is unsupported",
1090                                 rte_be_to_cpu_16(tpid_v));
1091                         rc = EINVAL;
1092                         goto fail;
1093                 }
1094
1095                 nb_supported_tpids = 1;
1096         }
1097
1098         if (pdata->innermost_ethertype_restriction.mask == RTE_BE16(0xffff)) {
1099                 struct sfc_mae_ethertype *et = &ethertypes[ethertype_idx];
1100                 rte_be16_t enforced_et;
1101
1102                 enforced_et = pdata->innermost_ethertype_restriction.value;
1103
1104                 if (et->mask == 0) {
1105                         et->mask = RTE_BE16(0xffff);
1106                         et->value = enforced_et;
1107                 } else if (et->mask != RTE_BE16(0xffff) ||
1108                            et->value != enforced_et) {
1109                         sfc_err(ctx->sa, "L3 EtherType must be 0x0/0x0 or 0x%04x/0xffff; got 0x%04x/0x%04x",
1110                                 rte_be_to_cpu_16(enforced_et),
1111                                 rte_be_to_cpu_16(et->value),
1112                                 rte_be_to_cpu_16(et->mask));
1113                         rc = EINVAL;
1114                         goto fail;
1115                 }
1116         }
1117
1118         /*
1119          * Now, when the number of VLAN tags is known, set fields
1120          * ETHER_TYPE, VLAN0_PROTO and VLAN1_PROTO so that the first
1121          * one is either a valid L3 EtherType (or 0x0000/0x0000),
1122          * and the last two are valid TPIDs (or 0x0000/0x0000).
1123          */
1124         rc = sfc_mae_set_ethertypes(ctx);
1125         if (rc != 0)
1126                 goto fail;
1127
1128         if (pdata->l3_next_proto_restriction_mask == 0xff) {
1129                 if (pdata->l3_next_proto_mask == 0) {
1130                         pdata->l3_next_proto_mask = 0xff;
1131                         pdata->l3_next_proto_value =
1132                                 pdata->l3_next_proto_restriction_value;
1133                 } else if (pdata->l3_next_proto_mask != 0xff ||
1134                            pdata->l3_next_proto_value !=
1135                            pdata->l3_next_proto_restriction_value) {
1136                         sfc_err(ctx->sa, "L3 next protocol must be 0x0/0x0 or 0x%02x/0xff; got 0x%02x/0x%02x",
1137                                 pdata->l3_next_proto_restriction_value,
1138                                 pdata->l3_next_proto_value,
1139                                 pdata->l3_next_proto_mask);
1140                         rc = EINVAL;
1141                         goto fail;
1142                 }
1143         }
1144
1145         if (enforce_tag_presence[0] || pdata->has_ovlan_mask) {
1146                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
1147                                                 fremap[EFX_MAE_FIELD_HAS_OVLAN],
1148                                                 enforce_tag_presence[0] ||
1149                                                 pdata->has_ovlan_value);
1150                 if (rc != 0)
1151                         goto fail;
1152         }
1153
1154         if (enforce_tag_presence[1] || pdata->has_ivlan_mask) {
1155                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
1156                                                 fremap[EFX_MAE_FIELD_HAS_IVLAN],
1157                                                 enforce_tag_presence[1] ||
1158                                                 pdata->has_ivlan_value);
1159                 if (rc != 0)
1160                         goto fail;
1161         }
1162
1163         valuep = (const uint8_t *)&pdata->l3_next_proto_value;
1164         maskp = (const uint8_t *)&pdata->l3_next_proto_mask;
1165         rc = efx_mae_match_spec_field_set(ctx->match_spec,
1166                                           fremap[EFX_MAE_FIELD_IP_PROTO],
1167                                           sizeof(pdata->l3_next_proto_value),
1168                                           valuep,
1169                                           sizeof(pdata->l3_next_proto_mask),
1170                                           maskp);
1171         if (rc != 0)
1172                 goto fail;
1173
1174         return 0;
1175
1176 fail:
1177         return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL,
1178                                   "Failed to process pattern data");
1179 }
1180
1181 static int
1182 sfc_mae_rule_parse_item_mark(const struct rte_flow_item *item,
1183                              struct sfc_flow_parse_ctx *ctx,
1184                              struct rte_flow_error *error)
1185 {
1186         const struct rte_flow_item_mark *spec = item->spec;
1187         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1188
1189         if (spec == NULL) {
1190                 return rte_flow_error_set(error, EINVAL,
1191                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1192                                 "NULL spec in item MARK");
1193         }
1194
1195         /*
1196          * This item is used in tunnel offload support only.
1197          * It must go before any network header items. This
1198          * way, sfc_mae_rule_preparse_item_mark() must have
1199          * already parsed it. Only one item MARK is allowed.
1200          */
1201         if (ctx_mae->ft_rule_type != SFC_FT_RULE_GROUP ||
1202             spec->id != (uint32_t)SFC_FT_ID_TO_MARK(ctx_mae->ft->id)) {
1203                 return rte_flow_error_set(error, EINVAL,
1204                                           RTE_FLOW_ERROR_TYPE_ITEM,
1205                                           item, "invalid item MARK");
1206         }
1207
1208         return 0;
1209 }
1210
1211 static int
1212 sfc_mae_rule_parse_item_port_id(const struct rte_flow_item *item,
1213                                 struct sfc_flow_parse_ctx *ctx,
1214                                 struct rte_flow_error *error)
1215 {
1216         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1217         const struct rte_flow_item_port_id supp_mask = {
1218                 .id = 0xffffffff,
1219         };
1220         const void *def_mask = &rte_flow_item_port_id_mask;
1221         const struct rte_flow_item_port_id *spec = NULL;
1222         const struct rte_flow_item_port_id *mask = NULL;
1223         efx_mport_sel_t mport_sel;
1224         int rc;
1225
1226         if (ctx_mae->match_mport_set) {
1227                 return rte_flow_error_set(error, ENOTSUP,
1228                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1229                                 "Can't handle multiple traffic source items");
1230         }
1231
1232         rc = sfc_flow_parse_init(item,
1233                                  (const void **)&spec, (const void **)&mask,
1234                                  (const void *)&supp_mask, def_mask,
1235                                  sizeof(struct rte_flow_item_port_id), error);
1236         if (rc != 0)
1237                 return rc;
1238
1239         if (mask->id != supp_mask.id) {
1240                 return rte_flow_error_set(error, EINVAL,
1241                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1242                                 "Bad mask in the PORT_ID pattern item");
1243         }
1244
1245         /* If "spec" is not set, could be any port ID */
1246         if (spec == NULL)
1247                 return 0;
1248
1249         if (spec->id > UINT16_MAX) {
1250                 return rte_flow_error_set(error, EOVERFLOW,
1251                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1252                                           "The port ID is too large");
1253         }
1254
1255         rc = sfc_mae_switch_port_by_ethdev(ctx_mae->sa->mae.switch_domain_id,
1256                                            spec->id, &mport_sel);
1257         if (rc != 0) {
1258                 return rte_flow_error_set(error, rc,
1259                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1260                                 "Can't find RTE ethdev by the port ID");
1261         }
1262
1263         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec,
1264                                           &mport_sel, NULL);
1265         if (rc != 0) {
1266                 return rte_flow_error_set(error, rc,
1267                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1268                                 "Failed to set MPORT for the port ID");
1269         }
1270
1271         ctx_mae->match_mport_set = B_TRUE;
1272
1273         return 0;
1274 }
1275
1276 static int
1277 sfc_mae_rule_parse_item_phy_port(const struct rte_flow_item *item,
1278                                  struct sfc_flow_parse_ctx *ctx,
1279                                  struct rte_flow_error *error)
1280 {
1281         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1282         const struct rte_flow_item_phy_port supp_mask = {
1283                 .index = 0xffffffff,
1284         };
1285         const void *def_mask = &rte_flow_item_phy_port_mask;
1286         const struct rte_flow_item_phy_port *spec = NULL;
1287         const struct rte_flow_item_phy_port *mask = NULL;
1288         efx_mport_sel_t mport_v;
1289         int rc;
1290
1291         if (ctx_mae->match_mport_set) {
1292                 return rte_flow_error_set(error, ENOTSUP,
1293                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1294                                 "Can't handle multiple traffic source items");
1295         }
1296
1297         rc = sfc_flow_parse_init(item,
1298                                  (const void **)&spec, (const void **)&mask,
1299                                  (const void *)&supp_mask, def_mask,
1300                                  sizeof(struct rte_flow_item_phy_port), error);
1301         if (rc != 0)
1302                 return rc;
1303
1304         if (mask->index != supp_mask.index) {
1305                 return rte_flow_error_set(error, EINVAL,
1306                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1307                                 "Bad mask in the PHY_PORT pattern item");
1308         }
1309
1310         /* If "spec" is not set, could be any physical port */
1311         if (spec == NULL)
1312                 return 0;
1313
1314         rc = efx_mae_mport_by_phy_port(spec->index, &mport_v);
1315         if (rc != 0) {
1316                 return rte_flow_error_set(error, rc,
1317                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1318                                 "Failed to convert the PHY_PORT index");
1319         }
1320
1321         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1322         if (rc != 0) {
1323                 return rte_flow_error_set(error, rc,
1324                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1325                                 "Failed to set MPORT for the PHY_PORT");
1326         }
1327
1328         ctx_mae->match_mport_set = B_TRUE;
1329
1330         return 0;
1331 }
1332
1333 static int
1334 sfc_mae_rule_parse_item_pf(const struct rte_flow_item *item,
1335                            struct sfc_flow_parse_ctx *ctx,
1336                            struct rte_flow_error *error)
1337 {
1338         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1339         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
1340         efx_mport_sel_t mport_v;
1341         int rc;
1342
1343         if (ctx_mae->match_mport_set) {
1344                 return rte_flow_error_set(error, ENOTSUP,
1345                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1346                                 "Can't handle multiple traffic source items");
1347         }
1348
1349         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID,
1350                                             &mport_v);
1351         if (rc != 0) {
1352                 return rte_flow_error_set(error, rc,
1353                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1354                                 "Failed to convert the PF ID");
1355         }
1356
1357         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1358         if (rc != 0) {
1359                 return rte_flow_error_set(error, rc,
1360                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1361                                 "Failed to set MPORT for the PF");
1362         }
1363
1364         ctx_mae->match_mport_set = B_TRUE;
1365
1366         return 0;
1367 }
1368
1369 static int
1370 sfc_mae_rule_parse_item_vf(const struct rte_flow_item *item,
1371                            struct sfc_flow_parse_ctx *ctx,
1372                            struct rte_flow_error *error)
1373 {
1374         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1375         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
1376         const struct rte_flow_item_vf supp_mask = {
1377                 .id = 0xffffffff,
1378         };
1379         const void *def_mask = &rte_flow_item_vf_mask;
1380         const struct rte_flow_item_vf *spec = NULL;
1381         const struct rte_flow_item_vf *mask = NULL;
1382         efx_mport_sel_t mport_v;
1383         int rc;
1384
1385         if (ctx_mae->match_mport_set) {
1386                 return rte_flow_error_set(error, ENOTSUP,
1387                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1388                                 "Can't handle multiple traffic source items");
1389         }
1390
1391         rc = sfc_flow_parse_init(item,
1392                                  (const void **)&spec, (const void **)&mask,
1393                                  (const void *)&supp_mask, def_mask,
1394                                  sizeof(struct rte_flow_item_vf), error);
1395         if (rc != 0)
1396                 return rc;
1397
1398         if (mask->id != supp_mask.id) {
1399                 return rte_flow_error_set(error, EINVAL,
1400                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1401                                 "Bad mask in the VF pattern item");
1402         }
1403
1404         /*
1405          * If "spec" is not set, the item requests any VF related to the
1406          * PF of the current DPDK port (but not the PF itself).
1407          * Reject this match criterion as unsupported.
1408          */
1409         if (spec == NULL) {
1410                 return rte_flow_error_set(error, EINVAL,
1411                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1412                                 "Bad spec in the VF pattern item");
1413         }
1414
1415         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, spec->id, &mport_v);
1416         if (rc != 0) {
1417                 return rte_flow_error_set(error, rc,
1418                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1419                                 "Failed to convert the PF + VF IDs");
1420         }
1421
1422         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1423         if (rc != 0) {
1424                 return rte_flow_error_set(error, rc,
1425                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1426                                 "Failed to set MPORT for the PF + VF");
1427         }
1428
1429         ctx_mae->match_mport_set = B_TRUE;
1430
1431         return 0;
1432 }
1433
1434 /*
1435  * Having this field ID in a field locator means that this
1436  * locator cannot be used to actually set the field at the
1437  * time when the corresponding item gets encountered. Such
1438  * fields get stashed in the parsing context instead. This
1439  * is required to resolve dependencies between the stashed
1440  * fields. See sfc_mae_rule_process_pattern_data().
1441  */
1442 #define SFC_MAE_FIELD_HANDLING_DEFERRED EFX_MAE_FIELD_NIDS
1443
1444 struct sfc_mae_field_locator {
1445         efx_mae_field_id_t              field_id;
1446         size_t                          size;
1447         /* Field offset in the corresponding rte_flow_item_ struct */
1448         size_t                          ofst;
1449 };
1450
1451 static void
1452 sfc_mae_item_build_supp_mask(const struct sfc_mae_field_locator *field_locators,
1453                              unsigned int nb_field_locators, void *mask_ptr,
1454                              size_t mask_size)
1455 {
1456         unsigned int i;
1457
1458         memset(mask_ptr, 0, mask_size);
1459
1460         for (i = 0; i < nb_field_locators; ++i) {
1461                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1462
1463                 SFC_ASSERT(fl->ofst + fl->size <= mask_size);
1464                 memset(RTE_PTR_ADD(mask_ptr, fl->ofst), 0xff, fl->size);
1465         }
1466 }
1467
1468 static int
1469 sfc_mae_parse_item(const struct sfc_mae_field_locator *field_locators,
1470                    unsigned int nb_field_locators, const uint8_t *spec,
1471                    const uint8_t *mask, struct sfc_mae_parse_ctx *ctx,
1472                    struct rte_flow_error *error)
1473 {
1474         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
1475         unsigned int i;
1476         int rc = 0;
1477
1478         for (i = 0; i < nb_field_locators; ++i) {
1479                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1480
1481                 if (fl->field_id == SFC_MAE_FIELD_HANDLING_DEFERRED)
1482                         continue;
1483
1484                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
1485                                                   fremap[fl->field_id],
1486                                                   fl->size, spec + fl->ofst,
1487                                                   fl->size, mask + fl->ofst);
1488                 if (rc != 0)
1489                         break;
1490         }
1491
1492         if (rc != 0) {
1493                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1494                                 NULL, "Failed to process item fields");
1495         }
1496
1497         return rc;
1498 }
1499
1500 static const struct sfc_mae_field_locator flocs_eth[] = {
1501         {
1502                 /*
1503                  * This locator is used only for building supported fields mask.
1504                  * The field is handled by sfc_mae_rule_process_pattern_data().
1505                  */
1506                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1507                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, type),
1508                 offsetof(struct rte_flow_item_eth, type),
1509         },
1510         {
1511                 EFX_MAE_FIELD_ETH_DADDR_BE,
1512                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, dst),
1513                 offsetof(struct rte_flow_item_eth, dst),
1514         },
1515         {
1516                 EFX_MAE_FIELD_ETH_SADDR_BE,
1517                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, src),
1518                 offsetof(struct rte_flow_item_eth, src),
1519         },
1520 };
1521
1522 static int
1523 sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item,
1524                             struct sfc_flow_parse_ctx *ctx,
1525                             struct rte_flow_error *error)
1526 {
1527         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1528         struct rte_flow_item_eth override_mask;
1529         struct rte_flow_item_eth supp_mask;
1530         const uint8_t *spec = NULL;
1531         const uint8_t *mask = NULL;
1532         int rc;
1533
1534         sfc_mae_item_build_supp_mask(flocs_eth, RTE_DIM(flocs_eth),
1535                                      &supp_mask, sizeof(supp_mask));
1536         supp_mask.has_vlan = 1;
1537
1538         rc = sfc_flow_parse_init(item,
1539                                  (const void **)&spec, (const void **)&mask,
1540                                  (const void *)&supp_mask,
1541                                  &rte_flow_item_eth_mask,
1542                                  sizeof(struct rte_flow_item_eth), error);
1543         if (rc != 0)
1544                 return rc;
1545
1546         if (ctx_mae->ft_rule_type == SFC_FT_RULE_JUMP && mask != NULL) {
1547                 /*
1548                  * The HW/FW hasn't got support for match on MAC addresses in
1549                  * outer rules yet (this will change). Match on VLAN presence
1550                  * isn't supported either. Ignore these match criteria.
1551                  */
1552                 memcpy(&override_mask, mask, sizeof(override_mask));
1553                 memset(&override_mask.hdr.dst_addr, 0,
1554                        sizeof(override_mask.hdr.dst_addr));
1555                 memset(&override_mask.hdr.src_addr, 0,
1556                        sizeof(override_mask.hdr.src_addr));
1557                 override_mask.has_vlan = 0;
1558
1559                 mask = (const uint8_t *)&override_mask;
1560         }
1561
1562         if (spec != NULL) {
1563                 struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1564                 struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
1565                 const struct rte_flow_item_eth *item_spec;
1566                 const struct rte_flow_item_eth *item_mask;
1567
1568                 item_spec = (const struct rte_flow_item_eth *)spec;
1569                 item_mask = (const struct rte_flow_item_eth *)mask;
1570
1571                 /*
1572                  * Remember various match criteria in the parsing context.
1573                  * sfc_mae_rule_process_pattern_data() will consider them
1574                  * altogether when the rest of the items have been parsed.
1575                  */
1576                 ethertypes[0].value = item_spec->type;
1577                 ethertypes[0].mask = item_mask->type;
1578                 if (item_mask->has_vlan) {
1579                         pdata->has_ovlan_mask = B_TRUE;
1580                         if (item_spec->has_vlan)
1581                                 pdata->has_ovlan_value = B_TRUE;
1582                 }
1583         } else {
1584                 /*
1585                  * The specification is empty. The overall pattern
1586                  * validity will be enforced at the end of parsing.
1587                  * See sfc_mae_rule_process_pattern_data().
1588                  */
1589                 return 0;
1590         }
1591
1592         return sfc_mae_parse_item(flocs_eth, RTE_DIM(flocs_eth), spec, mask,
1593                                   ctx_mae, error);
1594 }
1595
1596 static const struct sfc_mae_field_locator flocs_vlan[] = {
1597         /* Outermost tag */
1598         {
1599                 EFX_MAE_FIELD_VLAN0_TCI_BE,
1600                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1601                 offsetof(struct rte_flow_item_vlan, tci),
1602         },
1603         {
1604                 /*
1605                  * This locator is used only for building supported fields mask.
1606                  * The field is handled by sfc_mae_rule_process_pattern_data().
1607                  */
1608                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1609                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1610                 offsetof(struct rte_flow_item_vlan, inner_type),
1611         },
1612
1613         /* Innermost tag */
1614         {
1615                 EFX_MAE_FIELD_VLAN1_TCI_BE,
1616                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1617                 offsetof(struct rte_flow_item_vlan, tci),
1618         },
1619         {
1620                 /*
1621                  * This locator is used only for building supported fields mask.
1622                  * The field is handled by sfc_mae_rule_process_pattern_data().
1623                  */
1624                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1625                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1626                 offsetof(struct rte_flow_item_vlan, inner_type),
1627         },
1628 };
1629
1630 static int
1631 sfc_mae_rule_parse_item_vlan(const struct rte_flow_item *item,
1632                              struct sfc_flow_parse_ctx *ctx,
1633                              struct rte_flow_error *error)
1634 {
1635         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1636         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1637         boolean_t *has_vlan_mp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1638                 &pdata->has_ovlan_mask,
1639                 &pdata->has_ivlan_mask,
1640         };
1641         boolean_t *has_vlan_vp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1642                 &pdata->has_ovlan_value,
1643                 &pdata->has_ivlan_value,
1644         };
1645         boolean_t *cur_tag_presence_bit_mp;
1646         boolean_t *cur_tag_presence_bit_vp;
1647         const struct sfc_mae_field_locator *flocs;
1648         struct rte_flow_item_vlan supp_mask;
1649         const uint8_t *spec = NULL;
1650         const uint8_t *mask = NULL;
1651         unsigned int nb_flocs;
1652         int rc;
1653
1654         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1655
1656         if (pdata->nb_vlan_tags == SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1657                 return rte_flow_error_set(error, ENOTSUP,
1658                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1659                                 "Can't match that many VLAN tags");
1660         }
1661
1662         cur_tag_presence_bit_mp = has_vlan_mp_by_nb_tags[pdata->nb_vlan_tags];
1663         cur_tag_presence_bit_vp = has_vlan_vp_by_nb_tags[pdata->nb_vlan_tags];
1664
1665         if (*cur_tag_presence_bit_mp == B_TRUE &&
1666             *cur_tag_presence_bit_vp == B_FALSE) {
1667                 return rte_flow_error_set(error, EINVAL,
1668                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1669                                 "The previous item enforces no (more) VLAN, "
1670                                 "so the current item (VLAN) must not exist");
1671         }
1672
1673         nb_flocs = RTE_DIM(flocs_vlan) / SFC_MAE_MATCH_VLAN_MAX_NTAGS;
1674         flocs = flocs_vlan + pdata->nb_vlan_tags * nb_flocs;
1675
1676         sfc_mae_item_build_supp_mask(flocs, nb_flocs,
1677                                      &supp_mask, sizeof(supp_mask));
1678         /*
1679          * This only means that the field is supported by the driver and libefx.
1680          * Support on NIC level will be checked when all items have been parsed.
1681          */
1682         supp_mask.has_more_vlan = 1;
1683
1684         rc = sfc_flow_parse_init(item,
1685                                  (const void **)&spec, (const void **)&mask,
1686                                  (const void *)&supp_mask,
1687                                  &rte_flow_item_vlan_mask,
1688                                  sizeof(struct rte_flow_item_vlan), error);
1689         if (rc != 0)
1690                 return rc;
1691
1692         if (spec != NULL) {
1693                 struct sfc_mae_ethertype *et = pdata->ethertypes;
1694                 const struct rte_flow_item_vlan *item_spec;
1695                 const struct rte_flow_item_vlan *item_mask;
1696
1697                 item_spec = (const struct rte_flow_item_vlan *)spec;
1698                 item_mask = (const struct rte_flow_item_vlan *)mask;
1699
1700                 /*
1701                  * Remember various match criteria in the parsing context.
1702                  * sfc_mae_rule_process_pattern_data() will consider them
1703                  * altogether when the rest of the items have been parsed.
1704                  */
1705                 et[pdata->nb_vlan_tags + 1].value = item_spec->inner_type;
1706                 et[pdata->nb_vlan_tags + 1].mask = item_mask->inner_type;
1707                 pdata->tci_masks[pdata->nb_vlan_tags] = item_mask->tci;
1708                 if (item_mask->has_more_vlan) {
1709                         if (pdata->nb_vlan_tags ==
1710                             SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1711                                 return rte_flow_error_set(error, ENOTSUP,
1712                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
1713                                         "Can't use 'has_more_vlan' in "
1714                                         "the second item VLAN");
1715                         }
1716                         pdata->has_ivlan_mask = B_TRUE;
1717                         if (item_spec->has_more_vlan)
1718                                 pdata->has_ivlan_value = B_TRUE;
1719                 }
1720
1721                 /* Convert TCI to MAE representation right now. */
1722                 rc = sfc_mae_parse_item(flocs, nb_flocs, spec, mask,
1723                                         ctx_mae, error);
1724                 if (rc != 0)
1725                         return rc;
1726         }
1727
1728         ++(pdata->nb_vlan_tags);
1729
1730         return 0;
1731 }
1732
1733 static const struct sfc_mae_field_locator flocs_ipv4[] = {
1734         {
1735                 EFX_MAE_FIELD_SRC_IP4_BE,
1736                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.src_addr),
1737                 offsetof(struct rte_flow_item_ipv4, hdr.src_addr),
1738         },
1739         {
1740                 EFX_MAE_FIELD_DST_IP4_BE,
1741                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.dst_addr),
1742                 offsetof(struct rte_flow_item_ipv4, hdr.dst_addr),
1743         },
1744         {
1745                 /*
1746                  * This locator is used only for building supported fields mask.
1747                  * The field is handled by sfc_mae_rule_process_pattern_data().
1748                  */
1749                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1750                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.next_proto_id),
1751                 offsetof(struct rte_flow_item_ipv4, hdr.next_proto_id),
1752         },
1753         {
1754                 EFX_MAE_FIELD_IP_TOS,
1755                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4,
1756                                  hdr.type_of_service),
1757                 offsetof(struct rte_flow_item_ipv4, hdr.type_of_service),
1758         },
1759         {
1760                 EFX_MAE_FIELD_IP_TTL,
1761                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.time_to_live),
1762                 offsetof(struct rte_flow_item_ipv4, hdr.time_to_live),
1763         },
1764 };
1765
1766 static int
1767 sfc_mae_rule_parse_item_ipv4(const struct rte_flow_item *item,
1768                              struct sfc_flow_parse_ctx *ctx,
1769                              struct rte_flow_error *error)
1770 {
1771         rte_be16_t ethertype_ipv4_be = RTE_BE16(RTE_ETHER_TYPE_IPV4);
1772         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1773         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1774         struct rte_flow_item_ipv4 supp_mask;
1775         const uint8_t *spec = NULL;
1776         const uint8_t *mask = NULL;
1777         int rc;
1778
1779         sfc_mae_item_build_supp_mask(flocs_ipv4, RTE_DIM(flocs_ipv4),
1780                                      &supp_mask, sizeof(supp_mask));
1781
1782         rc = sfc_flow_parse_init(item,
1783                                  (const void **)&spec, (const void **)&mask,
1784                                  (const void *)&supp_mask,
1785                                  &rte_flow_item_ipv4_mask,
1786                                  sizeof(struct rte_flow_item_ipv4), error);
1787         if (rc != 0)
1788                 return rc;
1789
1790         pdata->innermost_ethertype_restriction.value = ethertype_ipv4_be;
1791         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1792
1793         if (spec != NULL) {
1794                 const struct rte_flow_item_ipv4 *item_spec;
1795                 const struct rte_flow_item_ipv4 *item_mask;
1796
1797                 item_spec = (const struct rte_flow_item_ipv4 *)spec;
1798                 item_mask = (const struct rte_flow_item_ipv4 *)mask;
1799
1800                 pdata->l3_next_proto_value = item_spec->hdr.next_proto_id;
1801                 pdata->l3_next_proto_mask = item_mask->hdr.next_proto_id;
1802         } else {
1803                 return 0;
1804         }
1805
1806         return sfc_mae_parse_item(flocs_ipv4, RTE_DIM(flocs_ipv4), spec, mask,
1807                                   ctx_mae, error);
1808 }
1809
1810 static const struct sfc_mae_field_locator flocs_ipv6[] = {
1811         {
1812                 EFX_MAE_FIELD_SRC_IP6_BE,
1813                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.src_addr),
1814                 offsetof(struct rte_flow_item_ipv6, hdr.src_addr),
1815         },
1816         {
1817                 EFX_MAE_FIELD_DST_IP6_BE,
1818                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.dst_addr),
1819                 offsetof(struct rte_flow_item_ipv6, hdr.dst_addr),
1820         },
1821         {
1822                 /*
1823                  * This locator is used only for building supported fields mask.
1824                  * The field is handled by sfc_mae_rule_process_pattern_data().
1825                  */
1826                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1827                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.proto),
1828                 offsetof(struct rte_flow_item_ipv6, hdr.proto),
1829         },
1830         {
1831                 EFX_MAE_FIELD_IP_TTL,
1832                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.hop_limits),
1833                 offsetof(struct rte_flow_item_ipv6, hdr.hop_limits),
1834         },
1835 };
1836
1837 static int
1838 sfc_mae_rule_parse_item_ipv6(const struct rte_flow_item *item,
1839                              struct sfc_flow_parse_ctx *ctx,
1840                              struct rte_flow_error *error)
1841 {
1842         rte_be16_t ethertype_ipv6_be = RTE_BE16(RTE_ETHER_TYPE_IPV6);
1843         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1844         const efx_mae_field_id_t *fremap = ctx_mae->field_ids_remap;
1845         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1846         struct rte_flow_item_ipv6 supp_mask;
1847         const uint8_t *spec = NULL;
1848         const uint8_t *mask = NULL;
1849         rte_be32_t vtc_flow_be;
1850         uint32_t vtc_flow;
1851         uint8_t tc_value;
1852         uint8_t tc_mask;
1853         int rc;
1854
1855         sfc_mae_item_build_supp_mask(flocs_ipv6, RTE_DIM(flocs_ipv6),
1856                                      &supp_mask, sizeof(supp_mask));
1857
1858         vtc_flow_be = RTE_BE32(RTE_IPV6_HDR_TC_MASK);
1859         memcpy(&supp_mask, &vtc_flow_be, sizeof(vtc_flow_be));
1860
1861         rc = sfc_flow_parse_init(item,
1862                                  (const void **)&spec, (const void **)&mask,
1863                                  (const void *)&supp_mask,
1864                                  &rte_flow_item_ipv6_mask,
1865                                  sizeof(struct rte_flow_item_ipv6), error);
1866         if (rc != 0)
1867                 return rc;
1868
1869         pdata->innermost_ethertype_restriction.value = ethertype_ipv6_be;
1870         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1871
1872         if (spec != NULL) {
1873                 const struct rte_flow_item_ipv6 *item_spec;
1874                 const struct rte_flow_item_ipv6 *item_mask;
1875
1876                 item_spec = (const struct rte_flow_item_ipv6 *)spec;
1877                 item_mask = (const struct rte_flow_item_ipv6 *)mask;
1878
1879                 pdata->l3_next_proto_value = item_spec->hdr.proto;
1880                 pdata->l3_next_proto_mask = item_mask->hdr.proto;
1881         } else {
1882                 return 0;
1883         }
1884
1885         rc = sfc_mae_parse_item(flocs_ipv6, RTE_DIM(flocs_ipv6), spec, mask,
1886                                 ctx_mae, error);
1887         if (rc != 0)
1888                 return rc;
1889
1890         memcpy(&vtc_flow_be, spec, sizeof(vtc_flow_be));
1891         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1892         tc_value = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1893
1894         memcpy(&vtc_flow_be, mask, sizeof(vtc_flow_be));
1895         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1896         tc_mask = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1897
1898         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
1899                                           fremap[EFX_MAE_FIELD_IP_TOS],
1900                                           sizeof(tc_value), &tc_value,
1901                                           sizeof(tc_mask), &tc_mask);
1902         if (rc != 0) {
1903                 return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1904                                 NULL, "Failed to process item fields");
1905         }
1906
1907         return 0;
1908 }
1909
1910 static const struct sfc_mae_field_locator flocs_tcp[] = {
1911         {
1912                 EFX_MAE_FIELD_L4_SPORT_BE,
1913                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.src_port),
1914                 offsetof(struct rte_flow_item_tcp, hdr.src_port),
1915         },
1916         {
1917                 EFX_MAE_FIELD_L4_DPORT_BE,
1918                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.dst_port),
1919                 offsetof(struct rte_flow_item_tcp, hdr.dst_port),
1920         },
1921         {
1922                 EFX_MAE_FIELD_TCP_FLAGS_BE,
1923                 /*
1924                  * The values have been picked intentionally since the
1925                  * target MAE field is oversize (16 bit). This mapping
1926                  * relies on the fact that the MAE field is big-endian.
1927                  */
1928                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.data_off) +
1929                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.tcp_flags),
1930                 offsetof(struct rte_flow_item_tcp, hdr.data_off),
1931         },
1932 };
1933
1934 static int
1935 sfc_mae_rule_parse_item_tcp(const struct rte_flow_item *item,
1936                             struct sfc_flow_parse_ctx *ctx,
1937                             struct rte_flow_error *error)
1938 {
1939         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1940         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1941         struct rte_flow_item_tcp supp_mask;
1942         const uint8_t *spec = NULL;
1943         const uint8_t *mask = NULL;
1944         int rc;
1945
1946         /*
1947          * When encountered among outermost items, item TCP is invalid.
1948          * Check which match specification is being constructed now.
1949          */
1950         if (ctx_mae->match_spec != ctx_mae->match_spec_action) {
1951                 return rte_flow_error_set(error, EINVAL,
1952                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1953                                           "TCP in outer frame is invalid");
1954         }
1955
1956         sfc_mae_item_build_supp_mask(flocs_tcp, RTE_DIM(flocs_tcp),
1957                                      &supp_mask, sizeof(supp_mask));
1958
1959         rc = sfc_flow_parse_init(item,
1960                                  (const void **)&spec, (const void **)&mask,
1961                                  (const void *)&supp_mask,
1962                                  &rte_flow_item_tcp_mask,
1963                                  sizeof(struct rte_flow_item_tcp), error);
1964         if (rc != 0)
1965                 return rc;
1966
1967         pdata->l3_next_proto_restriction_value = IPPROTO_TCP;
1968         pdata->l3_next_proto_restriction_mask = 0xff;
1969
1970         if (spec == NULL)
1971                 return 0;
1972
1973         return sfc_mae_parse_item(flocs_tcp, RTE_DIM(flocs_tcp), spec, mask,
1974                                   ctx_mae, error);
1975 }
1976
1977 static const struct sfc_mae_field_locator flocs_udp[] = {
1978         {
1979                 EFX_MAE_FIELD_L4_SPORT_BE,
1980                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.src_port),
1981                 offsetof(struct rte_flow_item_udp, hdr.src_port),
1982         },
1983         {
1984                 EFX_MAE_FIELD_L4_DPORT_BE,
1985                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.dst_port),
1986                 offsetof(struct rte_flow_item_udp, hdr.dst_port),
1987         },
1988 };
1989
1990 static int
1991 sfc_mae_rule_parse_item_udp(const struct rte_flow_item *item,
1992                             struct sfc_flow_parse_ctx *ctx,
1993                             struct rte_flow_error *error)
1994 {
1995         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1996         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1997         struct rte_flow_item_udp supp_mask;
1998         const uint8_t *spec = NULL;
1999         const uint8_t *mask = NULL;
2000         int rc;
2001
2002         sfc_mae_item_build_supp_mask(flocs_udp, RTE_DIM(flocs_udp),
2003                                      &supp_mask, sizeof(supp_mask));
2004
2005         rc = sfc_flow_parse_init(item,
2006                                  (const void **)&spec, (const void **)&mask,
2007                                  (const void *)&supp_mask,
2008                                  &rte_flow_item_udp_mask,
2009                                  sizeof(struct rte_flow_item_udp), error);
2010         if (rc != 0)
2011                 return rc;
2012
2013         pdata->l3_next_proto_restriction_value = IPPROTO_UDP;
2014         pdata->l3_next_proto_restriction_mask = 0xff;
2015
2016         if (spec == NULL)
2017                 return 0;
2018
2019         return sfc_mae_parse_item(flocs_udp, RTE_DIM(flocs_udp), spec, mask,
2020                                   ctx_mae, error);
2021 }
2022
2023 static const struct sfc_mae_field_locator flocs_tunnel[] = {
2024         {
2025                 /*
2026                  * The size and offset values are relevant
2027                  * for Geneve and NVGRE, too.
2028                  */
2029                 .size = RTE_SIZEOF_FIELD(struct rte_flow_item_vxlan, vni),
2030                 .ofst = offsetof(struct rte_flow_item_vxlan, vni),
2031         },
2032 };
2033
2034 /*
2035  * An auxiliary registry which allows using non-encap. field IDs
2036  * directly when building a match specification of type ACTION.
2037  *
2038  * See sfc_mae_rule_parse_pattern() and sfc_mae_rule_parse_item_tunnel().
2039  */
2040 static const efx_mae_field_id_t field_ids_no_remap[] = {
2041 #define FIELD_ID_NO_REMAP(_field) \
2042         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_##_field
2043
2044         FIELD_ID_NO_REMAP(ETHER_TYPE_BE),
2045         FIELD_ID_NO_REMAP(ETH_SADDR_BE),
2046         FIELD_ID_NO_REMAP(ETH_DADDR_BE),
2047         FIELD_ID_NO_REMAP(VLAN0_TCI_BE),
2048         FIELD_ID_NO_REMAP(VLAN0_PROTO_BE),
2049         FIELD_ID_NO_REMAP(VLAN1_TCI_BE),
2050         FIELD_ID_NO_REMAP(VLAN1_PROTO_BE),
2051         FIELD_ID_NO_REMAP(SRC_IP4_BE),
2052         FIELD_ID_NO_REMAP(DST_IP4_BE),
2053         FIELD_ID_NO_REMAP(IP_PROTO),
2054         FIELD_ID_NO_REMAP(IP_TOS),
2055         FIELD_ID_NO_REMAP(IP_TTL),
2056         FIELD_ID_NO_REMAP(SRC_IP6_BE),
2057         FIELD_ID_NO_REMAP(DST_IP6_BE),
2058         FIELD_ID_NO_REMAP(L4_SPORT_BE),
2059         FIELD_ID_NO_REMAP(L4_DPORT_BE),
2060         FIELD_ID_NO_REMAP(TCP_FLAGS_BE),
2061         FIELD_ID_NO_REMAP(HAS_OVLAN),
2062         FIELD_ID_NO_REMAP(HAS_IVLAN),
2063
2064 #undef FIELD_ID_NO_REMAP
2065 };
2066
2067 /*
2068  * An auxiliary registry which allows using "ENC" field IDs
2069  * when building a match specification of type OUTER.
2070  *
2071  * See sfc_mae_rule_encap_parse_init().
2072  */
2073 static const efx_mae_field_id_t field_ids_remap_to_encap[] = {
2074 #define FIELD_ID_REMAP_TO_ENCAP(_field) \
2075         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_ENC_##_field
2076
2077         FIELD_ID_REMAP_TO_ENCAP(ETHER_TYPE_BE),
2078         FIELD_ID_REMAP_TO_ENCAP(ETH_SADDR_BE),
2079         FIELD_ID_REMAP_TO_ENCAP(ETH_DADDR_BE),
2080         FIELD_ID_REMAP_TO_ENCAP(VLAN0_TCI_BE),
2081         FIELD_ID_REMAP_TO_ENCAP(VLAN0_PROTO_BE),
2082         FIELD_ID_REMAP_TO_ENCAP(VLAN1_TCI_BE),
2083         FIELD_ID_REMAP_TO_ENCAP(VLAN1_PROTO_BE),
2084         FIELD_ID_REMAP_TO_ENCAP(SRC_IP4_BE),
2085         FIELD_ID_REMAP_TO_ENCAP(DST_IP4_BE),
2086         FIELD_ID_REMAP_TO_ENCAP(IP_PROTO),
2087         FIELD_ID_REMAP_TO_ENCAP(IP_TOS),
2088         FIELD_ID_REMAP_TO_ENCAP(IP_TTL),
2089         FIELD_ID_REMAP_TO_ENCAP(SRC_IP6_BE),
2090         FIELD_ID_REMAP_TO_ENCAP(DST_IP6_BE),
2091         FIELD_ID_REMAP_TO_ENCAP(L4_SPORT_BE),
2092         FIELD_ID_REMAP_TO_ENCAP(L4_DPORT_BE),
2093         FIELD_ID_REMAP_TO_ENCAP(HAS_OVLAN),
2094         FIELD_ID_REMAP_TO_ENCAP(HAS_IVLAN),
2095
2096 #undef FIELD_ID_REMAP_TO_ENCAP
2097 };
2098
2099 static int
2100 sfc_mae_rule_parse_item_tunnel(const struct rte_flow_item *item,
2101                                struct sfc_flow_parse_ctx *ctx,
2102                                struct rte_flow_error *error)
2103 {
2104         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
2105         uint8_t vnet_id_v[sizeof(uint32_t)] = {0};
2106         uint8_t vnet_id_m[sizeof(uint32_t)] = {0};
2107         const struct rte_flow_item_vxlan *vxp;
2108         uint8_t supp_mask[sizeof(uint64_t)];
2109         const uint8_t *spec = NULL;
2110         const uint8_t *mask = NULL;
2111         int rc;
2112
2113         /*
2114          * We're about to start processing inner frame items.
2115          * Process pattern data that has been deferred so far
2116          * and reset pattern data storage.
2117          */
2118         rc = sfc_mae_rule_process_pattern_data(ctx_mae, error);
2119         if (rc != 0)
2120                 return rc;
2121
2122         memset(&ctx_mae->pattern_data, 0, sizeof(ctx_mae->pattern_data));
2123
2124         sfc_mae_item_build_supp_mask(flocs_tunnel, RTE_DIM(flocs_tunnel),
2125                                      &supp_mask, sizeof(supp_mask));
2126
2127         /*
2128          * This tunnel item was preliminarily detected by
2129          * sfc_mae_rule_encap_parse_init(). Default mask
2130          * was also picked by that helper. Use it here.
2131          */
2132         rc = sfc_flow_parse_init(item,
2133                                  (const void **)&spec, (const void **)&mask,
2134                                  (const void *)&supp_mask,
2135                                  ctx_mae->tunnel_def_mask,
2136                                  ctx_mae->tunnel_def_mask_size,  error);
2137         if (rc != 0)
2138                 return rc;
2139
2140         /*
2141          * This item and later ones comprise a
2142          * match specification of type ACTION.
2143          */
2144         ctx_mae->match_spec = ctx_mae->match_spec_action;
2145
2146         /* This item and later ones use non-encap. EFX MAE field IDs. */
2147         ctx_mae->field_ids_remap = field_ids_no_remap;
2148
2149         if (spec == NULL)
2150                 return 0;
2151
2152         /*
2153          * Field EFX_MAE_FIELD_ENC_VNET_ID_BE is a 32-bit one.
2154          * Copy 24-bit VNI, which is BE, at offset 1 in it.
2155          * The extra byte is 0 both in the mask and in the value.
2156          */
2157         vxp = (const struct rte_flow_item_vxlan *)spec;
2158         memcpy(vnet_id_v + 1, &vxp->vni, sizeof(vxp->vni));
2159
2160         vxp = (const struct rte_flow_item_vxlan *)mask;
2161         memcpy(vnet_id_m + 1, &vxp->vni, sizeof(vxp->vni));
2162
2163         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
2164                                           EFX_MAE_FIELD_ENC_VNET_ID_BE,
2165                                           sizeof(vnet_id_v), vnet_id_v,
2166                                           sizeof(vnet_id_m), vnet_id_m);
2167         if (rc != 0) {
2168                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
2169                                         item, "Failed to set VXLAN VNI");
2170         }
2171
2172         return rc;
2173 }
2174
2175 static const struct sfc_flow_item sfc_flow_items[] = {
2176         {
2177                 .type = RTE_FLOW_ITEM_TYPE_MARK,
2178                 .name = "MARK",
2179                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2180                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2181                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2182                 .parse = sfc_mae_rule_parse_item_mark,
2183         },
2184         {
2185                 .type = RTE_FLOW_ITEM_TYPE_PORT_ID,
2186                 .name = "PORT_ID",
2187                 /*
2188                  * In terms of RTE flow, this item is a META one,
2189                  * and its position in the pattern is don't care.
2190                  */
2191                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2192                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2193                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2194                 .parse = sfc_mae_rule_parse_item_port_id,
2195         },
2196         {
2197                 .type = RTE_FLOW_ITEM_TYPE_PHY_PORT,
2198                 .name = "PHY_PORT",
2199                 /*
2200                  * In terms of RTE flow, this item is a META one,
2201                  * and its position in the pattern is don't care.
2202                  */
2203                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2204                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2205                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2206                 .parse = sfc_mae_rule_parse_item_phy_port,
2207         },
2208         {
2209                 .type = RTE_FLOW_ITEM_TYPE_PF,
2210                 .name = "PF",
2211                 /*
2212                  * In terms of RTE flow, this item is a META one,
2213                  * and its position in the pattern is don't care.
2214                  */
2215                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2216                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2217                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2218                 .parse = sfc_mae_rule_parse_item_pf,
2219         },
2220         {
2221                 .type = RTE_FLOW_ITEM_TYPE_VF,
2222                 .name = "VF",
2223                 /*
2224                  * In terms of RTE flow, this item is a META one,
2225                  * and its position in the pattern is don't care.
2226                  */
2227                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2228                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2229                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2230                 .parse = sfc_mae_rule_parse_item_vf,
2231         },
2232         {
2233                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2234                 .name = "ETH",
2235                 .prev_layer = SFC_FLOW_ITEM_START_LAYER,
2236                 .layer = SFC_FLOW_ITEM_L2,
2237                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2238                 .parse = sfc_mae_rule_parse_item_eth,
2239         },
2240         {
2241                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
2242                 .name = "VLAN",
2243                 .prev_layer = SFC_FLOW_ITEM_L2,
2244                 .layer = SFC_FLOW_ITEM_L2,
2245                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2246                 .parse = sfc_mae_rule_parse_item_vlan,
2247         },
2248         {
2249                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
2250                 .name = "IPV4",
2251                 .prev_layer = SFC_FLOW_ITEM_L2,
2252                 .layer = SFC_FLOW_ITEM_L3,
2253                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2254                 .parse = sfc_mae_rule_parse_item_ipv4,
2255         },
2256         {
2257                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
2258                 .name = "IPV6",
2259                 .prev_layer = SFC_FLOW_ITEM_L2,
2260                 .layer = SFC_FLOW_ITEM_L3,
2261                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2262                 .parse = sfc_mae_rule_parse_item_ipv6,
2263         },
2264         {
2265                 .type = RTE_FLOW_ITEM_TYPE_TCP,
2266                 .name = "TCP",
2267                 .prev_layer = SFC_FLOW_ITEM_L3,
2268                 .layer = SFC_FLOW_ITEM_L4,
2269                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2270                 .parse = sfc_mae_rule_parse_item_tcp,
2271         },
2272         {
2273                 .type = RTE_FLOW_ITEM_TYPE_UDP,
2274                 .name = "UDP",
2275                 .prev_layer = SFC_FLOW_ITEM_L3,
2276                 .layer = SFC_FLOW_ITEM_L4,
2277                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2278                 .parse = sfc_mae_rule_parse_item_udp,
2279         },
2280         {
2281                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
2282                 .name = "VXLAN",
2283                 .prev_layer = SFC_FLOW_ITEM_L4,
2284                 .layer = SFC_FLOW_ITEM_START_LAYER,
2285                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2286                 .parse = sfc_mae_rule_parse_item_tunnel,
2287         },
2288         {
2289                 .type = RTE_FLOW_ITEM_TYPE_GENEVE,
2290                 .name = "GENEVE",
2291                 .prev_layer = SFC_FLOW_ITEM_L4,
2292                 .layer = SFC_FLOW_ITEM_START_LAYER,
2293                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2294                 .parse = sfc_mae_rule_parse_item_tunnel,
2295         },
2296         {
2297                 .type = RTE_FLOW_ITEM_TYPE_NVGRE,
2298                 .name = "NVGRE",
2299                 .prev_layer = SFC_FLOW_ITEM_L3,
2300                 .layer = SFC_FLOW_ITEM_START_LAYER,
2301                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2302                 .parse = sfc_mae_rule_parse_item_tunnel,
2303         },
2304 };
2305
2306 static int
2307 sfc_mae_rule_process_outer(struct sfc_adapter *sa,
2308                            struct sfc_mae_parse_ctx *ctx,
2309                            struct sfc_mae_outer_rule **rulep,
2310                            struct rte_flow_error *error)
2311 {
2312         efx_mae_rule_id_t invalid_rule_id = { .id = EFX_MAE_RSRC_ID_INVALID };
2313         int rc;
2314
2315         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE) {
2316                 *rulep = NULL;
2317                 goto no_or_id;
2318         }
2319
2320         SFC_ASSERT(ctx->match_spec_outer != NULL);
2321
2322         if (!efx_mae_match_spec_is_valid(sa->nic, ctx->match_spec_outer)) {
2323                 return rte_flow_error_set(error, ENOTSUP,
2324                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2325                                           "Inconsistent pattern (outer)");
2326         }
2327
2328         *rulep = sfc_mae_outer_rule_attach(sa, ctx->match_spec_outer,
2329                                            ctx->encap_type);
2330         if (*rulep != NULL) {
2331                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
2332         } else {
2333                 rc = sfc_mae_outer_rule_add(sa, ctx->match_spec_outer,
2334                                             ctx->encap_type, rulep);
2335                 if (rc != 0) {
2336                         return rte_flow_error_set(error, rc,
2337                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2338                                         "Failed to process the pattern");
2339                 }
2340         }
2341
2342         /* The spec has now been tracked by the outer rule entry. */
2343         ctx->match_spec_outer = NULL;
2344
2345 no_or_id:
2346         switch (ctx->ft_rule_type) {
2347         case SFC_FT_RULE_NONE:
2348                 break;
2349         case SFC_FT_RULE_JUMP:
2350                 /* No action rule */
2351                 return 0;
2352         case SFC_FT_RULE_GROUP:
2353                 /*
2354                  * Match on recirculation ID rather than
2355                  * on the outer rule allocation handle.
2356                  */
2357                 rc = efx_mae_match_spec_recirc_id_set(ctx->match_spec_action,
2358                                         SFC_FT_ID_TO_TUNNEL_MARK(ctx->ft->id));
2359                 if (rc != 0) {
2360                         return rte_flow_error_set(error, rc,
2361                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2362                                         "tunnel offload: GROUP: AR: failed to request match on RECIRC_ID");
2363                 }
2364                 return 0;
2365         default:
2366                 SFC_ASSERT(B_FALSE);
2367         }
2368
2369         /*
2370          * In MAE, lookup sequence comprises outer parse, outer rule lookup,
2371          * inner parse (when some outer rule is hit) and action rule lookup.
2372          * If the currently processed flow does not come with an outer rule,
2373          * its action rule must be available only for packets which miss in
2374          * outer rule table. Set OR_ID match field to 0xffffffff/0xffffffff
2375          * in the action rule specification; this ensures correct behaviour.
2376          *
2377          * If, on the other hand, this flow does have an outer rule, its ID
2378          * may be unknown at the moment (not yet allocated), but OR_ID mask
2379          * has to be set to 0xffffffff anyway for correct class comparisons.
2380          * When the outer rule has been allocated, this match field will be
2381          * overridden by sfc_mae_outer_rule_enable() to use the right value.
2382          */
2383         rc = efx_mae_match_spec_outer_rule_id_set(ctx->match_spec_action,
2384                                                   &invalid_rule_id);
2385         if (rc != 0) {
2386                 if (*rulep != NULL)
2387                         sfc_mae_outer_rule_del(sa, *rulep);
2388
2389                 *rulep = NULL;
2390
2391                 return rte_flow_error_set(error, rc,
2392                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2393                                           "Failed to process the pattern");
2394         }
2395
2396         return 0;
2397 }
2398
2399 static int
2400 sfc_mae_rule_preparse_item_mark(const struct rte_flow_item_mark *spec,
2401                                 struct sfc_mae_parse_ctx *ctx)
2402 {
2403         struct sfc_flow_tunnel *ft;
2404         uint32_t user_mark;
2405
2406         if (spec == NULL) {
2407                 sfc_err(ctx->sa, "tunnel offload: GROUP: NULL spec in item MARK");
2408                 return EINVAL;
2409         }
2410
2411         ft = sfc_flow_tunnel_pick(ctx->sa, spec->id);
2412         if (ft == NULL) {
2413                 sfc_err(ctx->sa, "tunnel offload: GROUP: invalid tunnel");
2414                 return EINVAL;
2415         }
2416
2417         if (ft->refcnt == 0) {
2418                 sfc_err(ctx->sa, "tunnel offload: GROUP: tunnel=%u does not exist",
2419                         ft->id);
2420                 return ENOENT;
2421         }
2422
2423         user_mark = SFC_FT_GET_USER_MARK(spec->id);
2424         if (user_mark != 0) {
2425                 sfc_err(ctx->sa, "tunnel offload: GROUP: invalid item MARK");
2426                 return EINVAL;
2427         }
2428
2429         sfc_dbg(ctx->sa, "tunnel offload: GROUP: detected");
2430
2431         ctx->ft_rule_type = SFC_FT_RULE_GROUP;
2432         ctx->ft = ft;
2433
2434         return 0;
2435 }
2436
2437 static int
2438 sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa,
2439                               const struct rte_flow_item pattern[],
2440                               struct sfc_mae_parse_ctx *ctx,
2441                               struct rte_flow_error *error)
2442 {
2443         struct sfc_mae *mae = &sa->mae;
2444         uint8_t recirc_id = 0;
2445         int rc;
2446
2447         if (pattern == NULL) {
2448                 rte_flow_error_set(error, EINVAL,
2449                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL,
2450                                    "NULL pattern");
2451                 return -rte_errno;
2452         }
2453
2454         for (;;) {
2455                 switch (pattern->type) {
2456                 case RTE_FLOW_ITEM_TYPE_MARK:
2457                         rc = sfc_mae_rule_preparse_item_mark(pattern->spec,
2458                                                              ctx);
2459                         if (rc != 0) {
2460                                 return rte_flow_error_set(error, rc,
2461                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2462                                                   pattern, "tunnel offload: GROUP: invalid item MARK");
2463                         }
2464                         ++pattern;
2465                         continue;
2466                 case RTE_FLOW_ITEM_TYPE_VXLAN:
2467                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_VXLAN;
2468                         ctx->tunnel_def_mask = &rte_flow_item_vxlan_mask;
2469                         ctx->tunnel_def_mask_size =
2470                                 sizeof(rte_flow_item_vxlan_mask);
2471                         break;
2472                 case RTE_FLOW_ITEM_TYPE_GENEVE:
2473                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_GENEVE;
2474                         ctx->tunnel_def_mask = &rte_flow_item_geneve_mask;
2475                         ctx->tunnel_def_mask_size =
2476                                 sizeof(rte_flow_item_geneve_mask);
2477                         break;
2478                 case RTE_FLOW_ITEM_TYPE_NVGRE:
2479                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_NVGRE;
2480                         ctx->tunnel_def_mask = &rte_flow_item_nvgre_mask;
2481                         ctx->tunnel_def_mask_size =
2482                                 sizeof(rte_flow_item_nvgre_mask);
2483                         break;
2484                 case RTE_FLOW_ITEM_TYPE_END:
2485                         break;
2486                 default:
2487                         ++pattern;
2488                         continue;
2489                 };
2490
2491                 break;
2492         }
2493
2494         switch (ctx->ft_rule_type) {
2495         case SFC_FT_RULE_NONE:
2496                 if (pattern->type == RTE_FLOW_ITEM_TYPE_END)
2497                         return 0;
2498                 break;
2499         case SFC_FT_RULE_JUMP:
2500                 if (pattern->type != RTE_FLOW_ITEM_TYPE_END) {
2501                         return rte_flow_error_set(error, ENOTSUP,
2502                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2503                                                   pattern, "tunnel offload: JUMP: invalid item");
2504                 }
2505                 ctx->encap_type = ctx->ft->encap_type;
2506                 break;
2507         case SFC_FT_RULE_GROUP:
2508                 if (pattern->type == RTE_FLOW_ITEM_TYPE_END) {
2509                         return rte_flow_error_set(error, EINVAL,
2510                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2511                                                   NULL, "tunnel offload: GROUP: missing tunnel item");
2512                 } else if (ctx->encap_type != ctx->ft->encap_type) {
2513                         return rte_flow_error_set(error, EINVAL,
2514                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2515                                                   pattern, "tunnel offload: GROUP: tunnel type mismatch");
2516                 }
2517                 break;
2518         default:
2519                 SFC_ASSERT(B_FALSE);
2520                 break;
2521         }
2522
2523         if ((mae->encap_types_supported & (1U << ctx->encap_type)) == 0) {
2524                 return rte_flow_error_set(error, ENOTSUP,
2525                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2526                                           "OR: unsupported tunnel type");
2527         }
2528
2529         switch (ctx->ft_rule_type) {
2530         case SFC_FT_RULE_JUMP:
2531                 recirc_id = SFC_FT_ID_TO_TUNNEL_MARK(ctx->ft->id);
2532                 /* FALLTHROUGH */
2533         case SFC_FT_RULE_NONE:
2534                 if (ctx->priority >= mae->nb_outer_rule_prios_max) {
2535                         return rte_flow_error_set(error, ENOTSUP,
2536                                         RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
2537                                         NULL, "OR: unsupported priority level");
2538                 }
2539
2540                 rc = efx_mae_match_spec_init(sa->nic,
2541                                              EFX_MAE_RULE_OUTER, ctx->priority,
2542                                              &ctx->match_spec_outer);
2543                 if (rc != 0) {
2544                         return rte_flow_error_set(error, rc,
2545                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2546                                 "OR: failed to initialise the match specification");
2547                 }
2548
2549                 /*
2550                  * Outermost items comprise a match
2551                  * specification of type OUTER.
2552                  */
2553                 ctx->match_spec = ctx->match_spec_outer;
2554
2555                 /* Outermost items use "ENC" EFX MAE field IDs. */
2556                 ctx->field_ids_remap = field_ids_remap_to_encap;
2557
2558                 rc = efx_mae_outer_rule_recirc_id_set(ctx->match_spec,
2559                                                       recirc_id);
2560                 if (rc != 0) {
2561                         return rte_flow_error_set(error, rc,
2562                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2563                                         "OR: failed to initialise RECIRC_ID");
2564                 }
2565                 break;
2566         case SFC_FT_RULE_GROUP:
2567                 /* Outermost items -> "ENC" match fields in the action rule. */
2568                 ctx->field_ids_remap = field_ids_remap_to_encap;
2569                 ctx->match_spec = ctx->match_spec_action;
2570
2571                 /* No own outer rule; match on JUMP OR's RECIRC_ID is used. */
2572                 ctx->encap_type = EFX_TUNNEL_PROTOCOL_NONE;
2573                 break;
2574         default:
2575                 SFC_ASSERT(B_FALSE);
2576                 break;
2577         }
2578
2579         return 0;
2580 }
2581
2582 static void
2583 sfc_mae_rule_encap_parse_fini(struct sfc_adapter *sa,
2584                               struct sfc_mae_parse_ctx *ctx)
2585 {
2586         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE)
2587                 return;
2588
2589         if (ctx->match_spec_outer != NULL)
2590                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
2591 }
2592
2593 int
2594 sfc_mae_rule_parse_pattern(struct sfc_adapter *sa,
2595                            const struct rte_flow_item pattern[],
2596                            struct sfc_flow_spec_mae *spec,
2597                            struct rte_flow_error *error)
2598 {
2599         struct sfc_mae_parse_ctx ctx_mae;
2600         struct sfc_flow_parse_ctx ctx;
2601         int rc;
2602
2603         memset(&ctx_mae, 0, sizeof(ctx_mae));
2604         ctx_mae.ft_rule_type = spec->ft_rule_type;
2605         ctx_mae.priority = spec->priority;
2606         ctx_mae.ft = spec->ft;
2607         ctx_mae.sa = sa;
2608
2609         switch (ctx_mae.ft_rule_type) {
2610         case SFC_FT_RULE_JUMP:
2611                 /* No action rule */
2612                 break;
2613         case SFC_FT_RULE_GROUP:
2614                 /* FALLTHROUGH */
2615         case SFC_FT_RULE_NONE:
2616                 rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_ACTION,
2617                                              spec->priority,
2618                                              &ctx_mae.match_spec_action);
2619                 if (rc != 0) {
2620                         rc = rte_flow_error_set(error, rc,
2621                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2622                                 "AR: failed to initialise the match specification");
2623                         goto fail_init_match_spec_action;
2624                 }
2625                 break;
2626         default:
2627                 SFC_ASSERT(B_FALSE);
2628                 break;
2629         }
2630
2631         /*
2632          * As a preliminary setting, assume that there is no encapsulation
2633          * in the pattern. That is, pattern items are about to comprise a
2634          * match specification of type ACTION and use non-encap. field IDs.
2635          *
2636          * sfc_mae_rule_encap_parse_init() below may override this.
2637          */
2638         ctx_mae.encap_type = EFX_TUNNEL_PROTOCOL_NONE;
2639         ctx_mae.match_spec = ctx_mae.match_spec_action;
2640         ctx_mae.field_ids_remap = field_ids_no_remap;
2641
2642         ctx.type = SFC_FLOW_PARSE_CTX_MAE;
2643         ctx.mae = &ctx_mae;
2644
2645         rc = sfc_mae_rule_encap_parse_init(sa, pattern, &ctx_mae, error);
2646         if (rc != 0)
2647                 goto fail_encap_parse_init;
2648
2649         /*
2650          * sfc_mae_rule_encap_parse_init() may have detected tunnel offload
2651          * GROUP rule. Remember its properties for later use.
2652          */
2653         spec->ft_rule_type = ctx_mae.ft_rule_type;
2654         spec->ft = ctx_mae.ft;
2655
2656         rc = sfc_flow_parse_pattern(sa, sfc_flow_items, RTE_DIM(sfc_flow_items),
2657                                     pattern, &ctx, error);
2658         if (rc != 0)
2659                 goto fail_parse_pattern;
2660
2661         rc = sfc_mae_rule_process_pattern_data(&ctx_mae, error);
2662         if (rc != 0)
2663                 goto fail_process_pattern_data;
2664
2665         rc = sfc_mae_rule_process_outer(sa, &ctx_mae, &spec->outer_rule, error);
2666         if (rc != 0)
2667                 goto fail_process_outer;
2668
2669         if (ctx_mae.match_spec_action != NULL &&
2670             !efx_mae_match_spec_is_valid(sa->nic, ctx_mae.match_spec_action)) {
2671                 rc = rte_flow_error_set(error, ENOTSUP,
2672                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2673                                         "Inconsistent pattern");
2674                 goto fail_validate_match_spec_action;
2675         }
2676
2677         spec->match_spec = ctx_mae.match_spec_action;
2678
2679         return 0;
2680
2681 fail_validate_match_spec_action:
2682 fail_process_outer:
2683 fail_process_pattern_data:
2684 fail_parse_pattern:
2685         sfc_mae_rule_encap_parse_fini(sa, &ctx_mae);
2686
2687 fail_encap_parse_init:
2688         if (ctx_mae.match_spec_action != NULL)
2689                 efx_mae_match_spec_fini(sa->nic, ctx_mae.match_spec_action);
2690
2691 fail_init_match_spec_action:
2692         return rc;
2693 }
2694
2695 /*
2696  * An action supported by MAE may correspond to a bundle of RTE flow actions,
2697  * in example, VLAN_PUSH = OF_PUSH_VLAN + OF_VLAN_SET_VID + OF_VLAN_SET_PCP.
2698  * That is, related RTE flow actions need to be tracked as parts of a whole
2699  * so that they can be combined into a single action and submitted to MAE
2700  * representation of a given rule's action set.
2701  *
2702  * Each RTE flow action provided by an application gets classified as
2703  * one belonging to some bundle type. If an action is not supposed to
2704  * belong to any bundle, or if this action is END, it is described as
2705  * one belonging to a dummy bundle of type EMPTY.
2706  *
2707  * A currently tracked bundle will be submitted if a repeating
2708  * action or an action of different bundle type follows.
2709  */
2710
2711 enum sfc_mae_actions_bundle_type {
2712         SFC_MAE_ACTIONS_BUNDLE_EMPTY = 0,
2713         SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH,
2714 };
2715
2716 struct sfc_mae_actions_bundle {
2717         enum sfc_mae_actions_bundle_type        type;
2718
2719         /* Indicates actions already tracked by the current bundle */
2720         uint64_t                                actions_mask;
2721
2722         /* Parameters used by SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH */
2723         rte_be16_t                              vlan_push_tpid;
2724         rte_be16_t                              vlan_push_tci;
2725 };
2726
2727 /*
2728  * Combine configuration of RTE flow actions tracked by the bundle into a
2729  * single action and submit the result to MAE action set specification.
2730  * Do nothing in the case of dummy action bundle.
2731  */
2732 static int
2733 sfc_mae_actions_bundle_submit(const struct sfc_mae_actions_bundle *bundle,
2734                               efx_mae_actions_t *spec)
2735 {
2736         int rc = 0;
2737
2738         switch (bundle->type) {
2739         case SFC_MAE_ACTIONS_BUNDLE_EMPTY:
2740                 break;
2741         case SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH:
2742                 rc = efx_mae_action_set_populate_vlan_push(
2743                         spec, bundle->vlan_push_tpid, bundle->vlan_push_tci);
2744                 break;
2745         default:
2746                 SFC_ASSERT(B_FALSE);
2747                 break;
2748         }
2749
2750         return rc;
2751 }
2752
2753 /*
2754  * Given the type of the next RTE flow action in the line, decide
2755  * whether a new bundle is about to start, and, if this is the case,
2756  * submit and reset the current bundle.
2757  */
2758 static int
2759 sfc_mae_actions_bundle_sync(const struct rte_flow_action *action,
2760                             struct sfc_mae_actions_bundle *bundle,
2761                             efx_mae_actions_t *spec,
2762                             struct rte_flow_error *error)
2763 {
2764         enum sfc_mae_actions_bundle_type bundle_type_new;
2765         int rc;
2766
2767         switch (action->type) {
2768         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
2769         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
2770         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
2771                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH;
2772                 break;
2773         default:
2774                 /*
2775                  * Self-sufficient actions, including END, are handled in this
2776                  * case. No checks for unsupported actions are needed here
2777                  * because parsing doesn't occur at this point.
2778                  */
2779                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_EMPTY;
2780                 break;
2781         }
2782
2783         if (bundle_type_new != bundle->type ||
2784             (bundle->actions_mask & (1ULL << action->type)) != 0) {
2785                 rc = sfc_mae_actions_bundle_submit(bundle, spec);
2786                 if (rc != 0)
2787                         goto fail_submit;
2788
2789                 memset(bundle, 0, sizeof(*bundle));
2790         }
2791
2792         bundle->type = bundle_type_new;
2793
2794         return 0;
2795
2796 fail_submit:
2797         return rte_flow_error_set(error, rc,
2798                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
2799                         "Failed to request the (group of) action(s)");
2800 }
2801
2802 static void
2803 sfc_mae_rule_parse_action_of_push_vlan(
2804                             const struct rte_flow_action_of_push_vlan *conf,
2805                             struct sfc_mae_actions_bundle *bundle)
2806 {
2807         bundle->vlan_push_tpid = conf->ethertype;
2808 }
2809
2810 static void
2811 sfc_mae_rule_parse_action_of_set_vlan_vid(
2812                             const struct rte_flow_action_of_set_vlan_vid *conf,
2813                             struct sfc_mae_actions_bundle *bundle)
2814 {
2815         bundle->vlan_push_tci |= (conf->vlan_vid &
2816                                   rte_cpu_to_be_16(RTE_LEN2MASK(12, uint16_t)));
2817 }
2818
2819 static void
2820 sfc_mae_rule_parse_action_of_set_vlan_pcp(
2821                             const struct rte_flow_action_of_set_vlan_pcp *conf,
2822                             struct sfc_mae_actions_bundle *bundle)
2823 {
2824         uint16_t vlan_tci_pcp = (uint16_t)(conf->vlan_pcp &
2825                                            RTE_LEN2MASK(3, uint8_t)) << 13;
2826
2827         bundle->vlan_push_tci |= rte_cpu_to_be_16(vlan_tci_pcp);
2828 }
2829
2830 struct sfc_mae_parsed_item {
2831         const struct rte_flow_item      *item;
2832         size_t                          proto_header_ofst;
2833         size_t                          proto_header_size;
2834 };
2835
2836 /*
2837  * For each 16-bit word of the given header, override
2838  * bits enforced by the corresponding 16-bit mask.
2839  */
2840 static void
2841 sfc_mae_header_force_item_masks(uint8_t *header_buf,
2842                                 const struct sfc_mae_parsed_item *parsed_items,
2843                                 unsigned int nb_parsed_items)
2844 {
2845         unsigned int item_idx;
2846
2847         for (item_idx = 0; item_idx < nb_parsed_items; ++item_idx) {
2848                 const struct sfc_mae_parsed_item *parsed_item;
2849                 const struct rte_flow_item *item;
2850                 size_t proto_header_size;
2851                 size_t ofst;
2852
2853                 parsed_item = &parsed_items[item_idx];
2854                 proto_header_size = parsed_item->proto_header_size;
2855                 item = parsed_item->item;
2856
2857                 for (ofst = 0; ofst < proto_header_size;
2858                      ofst += sizeof(rte_be16_t)) {
2859                         rte_be16_t *wp = RTE_PTR_ADD(header_buf, ofst);
2860                         const rte_be16_t *w_maskp;
2861                         const rte_be16_t *w_specp;
2862
2863                         w_maskp = RTE_PTR_ADD(item->mask, ofst);
2864                         w_specp = RTE_PTR_ADD(item->spec, ofst);
2865
2866                         *wp &= ~(*w_maskp);
2867                         *wp |= (*w_specp & *w_maskp);
2868                 }
2869
2870                 header_buf += proto_header_size;
2871         }
2872 }
2873
2874 #define SFC_IPV4_TTL_DEF        0x40
2875 #define SFC_IPV6_VTC_FLOW_DEF   0x60000000
2876 #define SFC_IPV6_HOP_LIMITS_DEF 0xff
2877 #define SFC_VXLAN_FLAGS_DEF     0x08000000
2878
2879 static int
2880 sfc_mae_rule_parse_action_vxlan_encap(
2881                             struct sfc_mae *mae,
2882                             const struct rte_flow_action_vxlan_encap *conf,
2883                             efx_mae_actions_t *spec,
2884                             struct rte_flow_error *error)
2885 {
2886         struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh;
2887         struct rte_flow_item *pattern = conf->definition;
2888         uint8_t *buf = bounce_eh->buf;
2889
2890         /* This array will keep track of non-VOID pattern items. */
2891         struct sfc_mae_parsed_item parsed_items[1 /* Ethernet */ +
2892                                                 2 /* VLAN tags */ +
2893                                                 1 /* IPv4 or IPv6 */ +
2894                                                 1 /* UDP */ +
2895                                                 1 /* VXLAN */];
2896         unsigned int nb_parsed_items = 0;
2897
2898         size_t eth_ethertype_ofst = offsetof(struct rte_ether_hdr, ether_type);
2899         uint8_t dummy_buf[RTE_MAX(sizeof(struct rte_ipv4_hdr),
2900                                   sizeof(struct rte_ipv6_hdr))];
2901         struct rte_ipv4_hdr *ipv4 = (void *)dummy_buf;
2902         struct rte_ipv6_hdr *ipv6 = (void *)dummy_buf;
2903         struct rte_vxlan_hdr *vxlan = NULL;
2904         struct rte_udp_hdr *udp = NULL;
2905         unsigned int nb_vlan_tags = 0;
2906         size_t next_proto_ofst = 0;
2907         size_t ethertype_ofst = 0;
2908         uint64_t exp_items;
2909         int rc;
2910
2911         if (pattern == NULL) {
2912                 return rte_flow_error_set(error, EINVAL,
2913                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2914                                 "The encap. header definition is NULL");
2915         }
2916
2917         bounce_eh->type = EFX_TUNNEL_PROTOCOL_VXLAN;
2918         bounce_eh->size = 0;
2919
2920         /*
2921          * Process pattern items and remember non-VOID ones.
2922          * Defer applying masks until after the complete header
2923          * has been built from the pattern items.
2924          */
2925         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_ETH);
2926
2927         for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; ++pattern) {
2928                 struct sfc_mae_parsed_item *parsed_item;
2929                 const uint64_t exp_items_extra_vlan[] = {
2930                         RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN), 0
2931                 };
2932                 size_t proto_header_size;
2933                 rte_be16_t *ethertypep;
2934                 uint8_t *next_protop;
2935                 uint8_t *buf_cur;
2936
2937                 if (pattern->spec == NULL) {
2938                         return rte_flow_error_set(error, EINVAL,
2939                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2940                                         "NULL item spec in the encap. header");
2941                 }
2942
2943                 if (pattern->mask == NULL) {
2944                         return rte_flow_error_set(error, EINVAL,
2945                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2946                                         "NULL item mask in the encap. header");
2947                 }
2948
2949                 if (pattern->last != NULL) {
2950                         /* This is not a match pattern, so disallow range. */
2951                         return rte_flow_error_set(error, EINVAL,
2952                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2953                                         "Range item in the encap. header");
2954                 }
2955
2956                 if (pattern->type == RTE_FLOW_ITEM_TYPE_VOID) {
2957                         /* Handle VOID separately, for clarity. */
2958                         continue;
2959                 }
2960
2961                 if ((exp_items & RTE_BIT64(pattern->type)) == 0) {
2962                         return rte_flow_error_set(error, ENOTSUP,
2963                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
2964                                         "Unexpected item in the encap. header");
2965                 }
2966
2967                 parsed_item = &parsed_items[nb_parsed_items];
2968                 buf_cur = buf + bounce_eh->size;
2969
2970                 switch (pattern->type) {
2971                 case RTE_FLOW_ITEM_TYPE_ETH:
2972                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_ETH,
2973                                                exp_items);
2974                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_eth,
2975                                                   hdr) != 0);
2976
2977                         proto_header_size = sizeof(struct rte_ether_hdr);
2978
2979                         ethertype_ofst = eth_ethertype_ofst;
2980
2981                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN) |
2982                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
2983                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
2984                         break;
2985                 case RTE_FLOW_ITEM_TYPE_VLAN:
2986                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VLAN,
2987                                                exp_items);
2988                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vlan,
2989                                                   hdr) != 0);
2990
2991                         proto_header_size = sizeof(struct rte_vlan_hdr);
2992
2993                         ethertypep = RTE_PTR_ADD(buf, eth_ethertype_ofst);
2994                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_QINQ);
2995
2996                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
2997                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_VLAN);
2998
2999                         ethertype_ofst =
3000                             bounce_eh->size +
3001                             offsetof(struct rte_vlan_hdr, eth_proto);
3002
3003                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
3004                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
3005                         exp_items |= exp_items_extra_vlan[nb_vlan_tags];
3006
3007                         ++nb_vlan_tags;
3008                         break;
3009                 case RTE_FLOW_ITEM_TYPE_IPV4:
3010                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV4,
3011                                                exp_items);
3012                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv4,
3013                                                   hdr) != 0);
3014
3015                         proto_header_size = sizeof(struct rte_ipv4_hdr);
3016
3017                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
3018                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV4);
3019
3020                         next_proto_ofst =
3021                             bounce_eh->size +
3022                             offsetof(struct rte_ipv4_hdr, next_proto_id);
3023
3024                         ipv4 = (struct rte_ipv4_hdr *)buf_cur;
3025
3026                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
3027                         break;
3028                 case RTE_FLOW_ITEM_TYPE_IPV6:
3029                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV6,
3030                                                exp_items);
3031                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv6,
3032                                                   hdr) != 0);
3033
3034                         proto_header_size = sizeof(struct rte_ipv6_hdr);
3035
3036                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
3037                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV6);
3038
3039                         next_proto_ofst = bounce_eh->size +
3040                                           offsetof(struct rte_ipv6_hdr, proto);
3041
3042                         ipv6 = (struct rte_ipv6_hdr *)buf_cur;
3043
3044                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
3045                         break;
3046                 case RTE_FLOW_ITEM_TYPE_UDP:
3047                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_UDP,
3048                                                exp_items);
3049                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_udp,
3050                                                   hdr) != 0);
3051
3052                         proto_header_size = sizeof(struct rte_udp_hdr);
3053
3054                         next_protop = RTE_PTR_ADD(buf, next_proto_ofst);
3055                         *next_protop = IPPROTO_UDP;
3056
3057                         udp = (struct rte_udp_hdr *)buf_cur;
3058
3059                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VXLAN);
3060                         break;
3061                 case RTE_FLOW_ITEM_TYPE_VXLAN:
3062                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VXLAN,
3063                                                exp_items);
3064                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vxlan,
3065                                                   hdr) != 0);
3066
3067                         proto_header_size = sizeof(struct rte_vxlan_hdr);
3068
3069                         vxlan = (struct rte_vxlan_hdr *)buf_cur;
3070
3071                         udp->dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT);
3072                         udp->dgram_len = RTE_BE16(sizeof(*udp) +
3073                                                   sizeof(*vxlan));
3074                         udp->dgram_cksum = 0;
3075
3076                         exp_items = 0;
3077                         break;
3078                 default:
3079                         return rte_flow_error_set(error, ENOTSUP,
3080                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3081                                         "Unknown item in the encap. header");
3082                 }
3083
3084                 if (bounce_eh->size + proto_header_size > bounce_eh->buf_size) {
3085                         return rte_flow_error_set(error, E2BIG,
3086                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3087                                         "The encap. header is too big");
3088                 }
3089
3090                 if ((proto_header_size & 1) != 0) {
3091                         return rte_flow_error_set(error, EINVAL,
3092                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3093                                         "Odd layer size in the encap. header");
3094                 }
3095
3096                 rte_memcpy(buf_cur, pattern->spec, proto_header_size);
3097                 bounce_eh->size += proto_header_size;
3098
3099                 parsed_item->item = pattern;
3100                 parsed_item->proto_header_size = proto_header_size;
3101                 ++nb_parsed_items;
3102         }
3103
3104         if (exp_items != 0) {
3105                 /* Parsing item VXLAN would have reset exp_items to 0. */
3106                 return rte_flow_error_set(error, ENOTSUP,
3107                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3108                                         "No item VXLAN in the encap. header");
3109         }
3110
3111         /* One of the pointers (ipv4, ipv6) refers to a dummy area. */
3112         ipv4->version_ihl = RTE_IPV4_VHL_DEF;
3113         ipv4->time_to_live = SFC_IPV4_TTL_DEF;
3114         ipv4->total_length = RTE_BE16(sizeof(*ipv4) + sizeof(*udp) +
3115                                       sizeof(*vxlan));
3116         /* The HW cannot compute this checksum. */
3117         ipv4->hdr_checksum = 0;
3118         ipv4->hdr_checksum = rte_ipv4_cksum(ipv4);
3119
3120         ipv6->vtc_flow = RTE_BE32(SFC_IPV6_VTC_FLOW_DEF);
3121         ipv6->hop_limits = SFC_IPV6_HOP_LIMITS_DEF;
3122         ipv6->payload_len = udp->dgram_len;
3123
3124         vxlan->vx_flags = RTE_BE32(SFC_VXLAN_FLAGS_DEF);
3125
3126         /* Take care of the masks. */
3127         sfc_mae_header_force_item_masks(buf, parsed_items, nb_parsed_items);
3128
3129         rc = efx_mae_action_set_populate_encap(spec);
3130         if (rc != 0) {
3131                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION,
3132                                 NULL, "failed to request action ENCAP");
3133         }
3134
3135         return rc;
3136 }
3137
3138 static int
3139 sfc_mae_rule_parse_action_mark(struct sfc_adapter *sa,
3140                                const struct rte_flow_action_mark *conf,
3141                                efx_mae_actions_t *spec)
3142 {
3143         int rc;
3144
3145         if (conf->id > SFC_FT_USER_MARK_MASK) {
3146                 sfc_err(sa, "the mark value is too large");
3147                 return EINVAL;
3148         }
3149
3150         rc = efx_mae_action_set_populate_mark(spec, conf->id);
3151         if (rc != 0)
3152                 sfc_err(sa, "failed to request action MARK: %s", strerror(rc));
3153
3154         return rc;
3155 }
3156
3157 static int
3158 sfc_mae_rule_parse_action_count(struct sfc_adapter *sa,
3159                                 const struct rte_flow_action_count *conf
3160                                         __rte_unused,
3161                                 efx_mae_actions_t *spec)
3162 {
3163         int rc;
3164
3165         if ((sa->counter_rxq.state & SFC_COUNTER_RXQ_INITIALIZED) == 0) {
3166                 sfc_err(sa,
3167                         "counter queue is not configured for COUNT action");
3168                 rc = EINVAL;
3169                 goto fail_counter_queue_uninit;
3170         }
3171
3172         if (sfc_get_service_lcore(SOCKET_ID_ANY) == RTE_MAX_LCORE) {
3173                 rc = EINVAL;
3174                 goto fail_no_service_core;
3175         }
3176
3177         rc = efx_mae_action_set_populate_count(spec);
3178         if (rc != 0) {
3179                 sfc_err(sa,
3180                         "failed to populate counters in MAE action set: %s",
3181                         rte_strerror(rc));
3182                 goto fail_populate_count;
3183         }
3184
3185         return 0;
3186
3187 fail_populate_count:
3188 fail_no_service_core:
3189 fail_counter_queue_uninit:
3190
3191         return rc;
3192 }
3193
3194 static int
3195 sfc_mae_rule_parse_action_phy_port(struct sfc_adapter *sa,
3196                                    const struct rte_flow_action_phy_port *conf,
3197                                    efx_mae_actions_t *spec)
3198 {
3199         efx_mport_sel_t mport;
3200         uint32_t phy_port;
3201         int rc;
3202
3203         if (conf->original != 0)
3204                 phy_port = efx_nic_cfg_get(sa->nic)->enc_assigned_port;
3205         else
3206                 phy_port = conf->index;
3207
3208         rc = efx_mae_mport_by_phy_port(phy_port, &mport);
3209         if (rc != 0) {
3210                 sfc_err(sa, "failed to convert phys. port ID %u to m-port selector: %s",
3211                         phy_port, strerror(rc));
3212                 return rc;
3213         }
3214
3215         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3216         if (rc != 0) {
3217                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3218                         mport.sel, strerror(rc));
3219         }
3220
3221         return rc;
3222 }
3223
3224 static int
3225 sfc_mae_rule_parse_action_pf_vf(struct sfc_adapter *sa,
3226                                 const struct rte_flow_action_vf *vf_conf,
3227                                 efx_mae_actions_t *spec)
3228 {
3229         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
3230         efx_mport_sel_t mport;
3231         uint32_t vf;
3232         int rc;
3233
3234         if (vf_conf == NULL)
3235                 vf = EFX_PCI_VF_INVALID;
3236         else if (vf_conf->original != 0)
3237                 vf = encp->enc_vf;
3238         else
3239                 vf = vf_conf->id;
3240
3241         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, vf, &mport);
3242         if (rc != 0) {
3243                 sfc_err(sa, "failed to convert PF %u VF %d to m-port: %s",
3244                         encp->enc_pf, (vf != EFX_PCI_VF_INVALID) ? (int)vf : -1,
3245                         strerror(rc));
3246                 return rc;
3247         }
3248
3249         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3250         if (rc != 0) {
3251                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3252                         mport.sel, strerror(rc));
3253         }
3254
3255         return rc;
3256 }
3257
3258 static int
3259 sfc_mae_rule_parse_action_port_id(struct sfc_adapter *sa,
3260                                   const struct rte_flow_action_port_id *conf,
3261                                   efx_mae_actions_t *spec)
3262 {
3263         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
3264         struct sfc_mae *mae = &sa->mae;
3265         efx_mport_sel_t mport;
3266         uint16_t port_id;
3267         int rc;
3268
3269         if (conf->id > UINT16_MAX)
3270                 return EOVERFLOW;
3271
3272         port_id = (conf->original != 0) ? sas->port_id : conf->id;
3273
3274         rc = sfc_mae_switch_port_by_ethdev(mae->switch_domain_id,
3275                                            port_id, &mport);
3276         if (rc != 0) {
3277                 sfc_err(sa, "failed to find MAE switch port SW entry for RTE ethdev port %u: %s",
3278                         port_id, strerror(rc));
3279                 return rc;
3280         }
3281
3282         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3283         if (rc != 0) {
3284                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3285                         mport.sel, strerror(rc));
3286         }
3287
3288         return rc;
3289 }
3290
3291 static const char * const action_names[] = {
3292         [RTE_FLOW_ACTION_TYPE_VXLAN_DECAP] = "VXLAN_DECAP",
3293         [RTE_FLOW_ACTION_TYPE_OF_POP_VLAN] = "OF_POP_VLAN",
3294         [RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN] = "OF_PUSH_VLAN",
3295         [RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID] = "OF_SET_VLAN_VID",
3296         [RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP] = "OF_SET_VLAN_PCP",
3297         [RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP] = "VXLAN_ENCAP",
3298         [RTE_FLOW_ACTION_TYPE_FLAG] = "FLAG",
3299         [RTE_FLOW_ACTION_TYPE_MARK] = "MARK",
3300         [RTE_FLOW_ACTION_TYPE_PHY_PORT] = "PHY_PORT",
3301         [RTE_FLOW_ACTION_TYPE_PF] = "PF",
3302         [RTE_FLOW_ACTION_TYPE_VF] = "VF",
3303         [RTE_FLOW_ACTION_TYPE_PORT_ID] = "PORT_ID",
3304         [RTE_FLOW_ACTION_TYPE_DROP] = "DROP",
3305 };
3306
3307 static int
3308 sfc_mae_rule_parse_action(struct sfc_adapter *sa,
3309                           const struct rte_flow_action *action,
3310                           const struct sfc_mae_outer_rule *outer_rule,
3311                           struct sfc_mae_actions_bundle *bundle,
3312                           efx_mae_actions_t *spec,
3313                           struct rte_flow_error *error)
3314 {
3315         const uint64_t rx_metadata = sa->negotiated_rx_metadata;
3316         bool custom_error = B_FALSE;
3317         int rc = 0;
3318
3319         switch (action->type) {
3320         case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3321                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_DECAP,
3322                                        bundle->actions_mask);
3323                 if (outer_rule == NULL ||
3324                     outer_rule->encap_type != EFX_TUNNEL_PROTOCOL_VXLAN)
3325                         rc = EINVAL;
3326                 else
3327                         rc = efx_mae_action_set_populate_decap(spec);
3328                 break;
3329         case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
3330                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_POP_VLAN,
3331                                        bundle->actions_mask);
3332                 rc = efx_mae_action_set_populate_vlan_pop(spec);
3333                 break;
3334         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3335                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN,
3336                                        bundle->actions_mask);
3337                 sfc_mae_rule_parse_action_of_push_vlan(action->conf, bundle);
3338                 break;
3339         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3340                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID,
3341                                        bundle->actions_mask);
3342                 sfc_mae_rule_parse_action_of_set_vlan_vid(action->conf, bundle);
3343                 break;
3344         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
3345                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP,
3346                                        bundle->actions_mask);
3347                 sfc_mae_rule_parse_action_of_set_vlan_pcp(action->conf, bundle);
3348                 break;
3349         case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3350                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP,
3351                                        bundle->actions_mask);
3352                 rc = sfc_mae_rule_parse_action_vxlan_encap(&sa->mae,
3353                                                            action->conf,
3354                                                            spec, error);
3355                 custom_error = B_TRUE;
3356                 break;
3357         case RTE_FLOW_ACTION_TYPE_COUNT:
3358                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_COUNT,
3359                                        bundle->actions_mask);
3360                 rc = sfc_mae_rule_parse_action_count(sa, action->conf, spec);
3361                 break;
3362         case RTE_FLOW_ACTION_TYPE_FLAG:
3363                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG,
3364                                        bundle->actions_mask);
3365                 if ((rx_metadata & RTE_ETH_RX_METADATA_USER_FLAG) != 0) {
3366                         rc = efx_mae_action_set_populate_flag(spec);
3367                 } else {
3368                         rc = rte_flow_error_set(error, ENOTSUP,
3369                                                 RTE_FLOW_ERROR_TYPE_ACTION,
3370                                                 action,
3371                                                 "flag delivery has not been negotiated");
3372                         custom_error = B_TRUE;
3373                 }
3374                 break;
3375         case RTE_FLOW_ACTION_TYPE_MARK:
3376                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK,
3377                                        bundle->actions_mask);
3378                 if ((rx_metadata & RTE_ETH_RX_METADATA_USER_MARK) != 0) {
3379                         rc = sfc_mae_rule_parse_action_mark(sa, action->conf,
3380                                                             spec);
3381                 } else {
3382                         rc = rte_flow_error_set(error, ENOTSUP,
3383                                                 RTE_FLOW_ERROR_TYPE_ACTION,
3384                                                 action,
3385                                                 "mark delivery has not been negotiated");
3386                         custom_error = B_TRUE;
3387                 }
3388                 break;
3389         case RTE_FLOW_ACTION_TYPE_PHY_PORT:
3390                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PHY_PORT,
3391                                        bundle->actions_mask);
3392                 rc = sfc_mae_rule_parse_action_phy_port(sa, action->conf, spec);
3393                 break;
3394         case RTE_FLOW_ACTION_TYPE_PF:
3395                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PF,
3396                                        bundle->actions_mask);
3397                 rc = sfc_mae_rule_parse_action_pf_vf(sa, NULL, spec);
3398                 break;
3399         case RTE_FLOW_ACTION_TYPE_VF:
3400                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VF,
3401                                        bundle->actions_mask);
3402                 rc = sfc_mae_rule_parse_action_pf_vf(sa, action->conf, spec);
3403                 break;
3404         case RTE_FLOW_ACTION_TYPE_PORT_ID:
3405                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PORT_ID,
3406                                        bundle->actions_mask);
3407                 rc = sfc_mae_rule_parse_action_port_id(sa, action->conf, spec);
3408                 break;
3409         case RTE_FLOW_ACTION_TYPE_DROP:
3410                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP,
3411                                        bundle->actions_mask);
3412                 rc = efx_mae_action_set_populate_drop(spec);
3413                 break;
3414         default:
3415                 return rte_flow_error_set(error, ENOTSUP,
3416                                 RTE_FLOW_ERROR_TYPE_ACTION, NULL,
3417                                 "Unsupported action");
3418         }
3419
3420         if (rc == 0) {
3421                 bundle->actions_mask |= (1ULL << action->type);
3422         } else if (!custom_error) {
3423                 if (action->type < RTE_DIM(action_names)) {
3424                         const char *action_name = action_names[action->type];
3425
3426                         if (action_name != NULL) {
3427                                 sfc_err(sa, "action %s was rejected: %s",
3428                                         action_name, strerror(rc));
3429                         }
3430                 }
3431                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION,
3432                                 NULL, "Failed to request the action");
3433         }
3434
3435         return rc;
3436 }
3437
3438 static void
3439 sfc_mae_bounce_eh_invalidate(struct sfc_mae_bounce_eh *bounce_eh)
3440 {
3441         bounce_eh->type = EFX_TUNNEL_PROTOCOL_NONE;
3442 }
3443
3444 static int
3445 sfc_mae_process_encap_header(struct sfc_adapter *sa,
3446                              const struct sfc_mae_bounce_eh *bounce_eh,
3447                              struct sfc_mae_encap_header **encap_headerp)
3448 {
3449         if (bounce_eh->type == EFX_TUNNEL_PROTOCOL_NONE) {
3450                 encap_headerp = NULL;
3451                 return 0;
3452         }
3453
3454         *encap_headerp = sfc_mae_encap_header_attach(sa, bounce_eh);
3455         if (*encap_headerp != NULL)
3456                 return 0;
3457
3458         return sfc_mae_encap_header_add(sa, bounce_eh, encap_headerp);
3459 }
3460
3461 int
3462 sfc_mae_rule_parse_actions(struct sfc_adapter *sa,
3463                            const struct rte_flow_action actions[],
3464                            struct sfc_flow_spec_mae *spec_mae,
3465                            struct rte_flow_error *error)
3466 {
3467         struct sfc_mae_encap_header *encap_header = NULL;
3468         struct sfc_mae_actions_bundle bundle = {0};
3469         const struct rte_flow_action *action;
3470         struct sfc_mae *mae = &sa->mae;
3471         efx_mae_actions_t *spec;
3472         unsigned int n_count;
3473         int rc;
3474
3475         rte_errno = 0;
3476
3477         if (actions == NULL) {
3478                 return rte_flow_error_set(error, EINVAL,
3479                                 RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL,
3480                                 "NULL actions");
3481         }
3482
3483         rc = efx_mae_action_set_spec_init(sa->nic, &spec);
3484         if (rc != 0)
3485                 goto fail_action_set_spec_init;
3486
3487         if (spec_mae->ft_rule_type == SFC_FT_RULE_GROUP) {
3488                 /* JUMP rules don't decapsulate packets. GROUP rules do. */
3489                 rc = efx_mae_action_set_populate_decap(spec);
3490                 if (rc != 0)
3491                         goto fail_enforce_ft_decap;
3492         }
3493
3494         /* Cleanup after previous encap. header bounce buffer usage. */
3495         sfc_mae_bounce_eh_invalidate(&mae->bounce_eh);
3496
3497         for (action = actions;
3498              action->type != RTE_FLOW_ACTION_TYPE_END; ++action) {
3499                 rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
3500                 if (rc != 0)
3501                         goto fail_rule_parse_action;
3502
3503                 rc = sfc_mae_rule_parse_action(sa, action, spec_mae->outer_rule,
3504                                                &bundle, spec, error);
3505                 if (rc != 0)
3506                         goto fail_rule_parse_action;
3507         }
3508
3509         rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
3510         if (rc != 0)
3511                 goto fail_rule_parse_action;
3512
3513         rc = sfc_mae_process_encap_header(sa, &mae->bounce_eh, &encap_header);
3514         if (rc != 0)
3515                 goto fail_process_encap_header;
3516
3517         n_count = efx_mae_action_set_get_nb_count(spec);
3518         if (n_count > 1) {
3519                 rc = ENOTSUP;
3520                 sfc_err(sa, "too many count actions requested: %u", n_count);
3521                 goto fail_nb_count;
3522         }
3523
3524         switch (spec_mae->ft_rule_type) {
3525         case SFC_FT_RULE_NONE:
3526                 break;
3527         case SFC_FT_RULE_GROUP:
3528                 /*
3529                  * Packets that go to the rule's AR have FT mark set (from the
3530                  * JUMP rule OR's RECIRC_ID). Remove this mark in matching
3531                  * packets. The user may have provided their own action
3532                  * MARK above, so don't check the return value here.
3533                  */
3534                 (void)efx_mae_action_set_populate_mark(spec, 0);
3535                 break;
3536         default:
3537                 SFC_ASSERT(B_FALSE);
3538         }
3539
3540         spec_mae->action_set = sfc_mae_action_set_attach(sa, encap_header,
3541                                                          n_count, spec);
3542         if (spec_mae->action_set != NULL) {
3543                 sfc_mae_encap_header_del(sa, encap_header);
3544                 efx_mae_action_set_spec_fini(sa->nic, spec);
3545                 return 0;
3546         }
3547
3548         rc = sfc_mae_action_set_add(sa, actions, spec, encap_header, n_count,
3549                                     &spec_mae->action_set);
3550         if (rc != 0)
3551                 goto fail_action_set_add;
3552
3553         return 0;
3554
3555 fail_action_set_add:
3556 fail_nb_count:
3557         sfc_mae_encap_header_del(sa, encap_header);
3558
3559 fail_process_encap_header:
3560 fail_rule_parse_action:
3561         efx_mae_action_set_spec_fini(sa->nic, spec);
3562
3563 fail_enforce_ft_decap:
3564 fail_action_set_spec_init:
3565         if (rc > 0 && rte_errno == 0) {
3566                 rc = rte_flow_error_set(error, rc,
3567                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3568                         NULL, "Failed to process the action");
3569         }
3570         return rc;
3571 }
3572
3573 static bool
3574 sfc_mae_rules_class_cmp(struct sfc_adapter *sa,
3575                         const efx_mae_match_spec_t *left,
3576                         const efx_mae_match_spec_t *right)
3577 {
3578         bool have_same_class;
3579         int rc;
3580
3581         rc = efx_mae_match_specs_class_cmp(sa->nic, left, right,
3582                                            &have_same_class);
3583
3584         return (rc == 0) ? have_same_class : false;
3585 }
3586
3587 static int
3588 sfc_mae_outer_rule_class_verify(struct sfc_adapter *sa,
3589                                 struct sfc_mae_outer_rule *rule)
3590 {
3591         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
3592         struct sfc_mae_outer_rule *entry;
3593         struct sfc_mae *mae = &sa->mae;
3594
3595         if (fw_rsrc->rule_id.id != EFX_MAE_RSRC_ID_INVALID) {
3596                 /* An active rule is reused. It's class is wittingly valid. */
3597                 return 0;
3598         }
3599
3600         TAILQ_FOREACH_REVERSE(entry, &mae->outer_rules,
3601                               sfc_mae_outer_rules, entries) {
3602                 const efx_mae_match_spec_t *left = entry->match_spec;
3603                 const efx_mae_match_spec_t *right = rule->match_spec;
3604
3605                 if (entry == rule)
3606                         continue;
3607
3608                 if (sfc_mae_rules_class_cmp(sa, left, right))
3609                         return 0;
3610         }
3611
3612         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
3613                  "support for outer frame pattern items is not guaranteed; "
3614                  "other than that, the items are valid from SW standpoint");
3615         return 0;
3616 }
3617
3618 static int
3619 sfc_mae_action_rule_class_verify(struct sfc_adapter *sa,
3620                                  struct sfc_flow_spec_mae *spec)
3621 {
3622         const struct rte_flow *entry;
3623
3624         if (spec->match_spec == NULL)
3625                 return 0;
3626
3627         TAILQ_FOREACH_REVERSE(entry, &sa->flow_list, sfc_flow_list, entries) {
3628                 const struct sfc_flow_spec *entry_spec = &entry->spec;
3629                 const struct sfc_flow_spec_mae *es_mae = &entry_spec->mae;
3630                 const efx_mae_match_spec_t *left = es_mae->match_spec;
3631                 const efx_mae_match_spec_t *right = spec->match_spec;
3632
3633                 switch (entry_spec->type) {
3634                 case SFC_FLOW_SPEC_FILTER:
3635                         /* Ignore VNIC-level flows */
3636                         break;
3637                 case SFC_FLOW_SPEC_MAE:
3638                         if (sfc_mae_rules_class_cmp(sa, left, right))
3639                                 return 0;
3640                         break;
3641                 default:
3642                         SFC_ASSERT(false);
3643                 }
3644         }
3645
3646         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
3647                  "support for inner frame pattern items is not guaranteed; "
3648                  "other than that, the items are valid from SW standpoint");
3649         return 0;
3650 }
3651
3652 /**
3653  * Confirm that a given flow can be accepted by the FW.
3654  *
3655  * @param sa
3656  *   Software adapter context
3657  * @param flow
3658  *   Flow to be verified
3659  * @return
3660  *   Zero on success and non-zero in the case of error.
3661  *   A special value of EAGAIN indicates that the adapter is
3662  *   not in started state. This state is compulsory because
3663  *   it only makes sense to compare the rule class of the flow
3664  *   being validated with classes of the active rules.
3665  *   Such classes are wittingly supported by the FW.
3666  */
3667 int
3668 sfc_mae_flow_verify(struct sfc_adapter *sa,
3669                     struct rte_flow *flow)
3670 {
3671         struct sfc_flow_spec *spec = &flow->spec;
3672         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3673         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3674         int rc;
3675
3676         SFC_ASSERT(sfc_adapter_is_locked(sa));
3677
3678         if (sa->state != SFC_ETHDEV_STARTED)
3679                 return EAGAIN;
3680
3681         if (outer_rule != NULL) {
3682                 rc = sfc_mae_outer_rule_class_verify(sa, outer_rule);
3683                 if (rc != 0)
3684                         return rc;
3685         }
3686
3687         return sfc_mae_action_rule_class_verify(sa, spec_mae);
3688 }
3689
3690 int
3691 sfc_mae_flow_insert(struct sfc_adapter *sa,
3692                     struct rte_flow *flow)
3693 {
3694         struct sfc_flow_spec *spec = &flow->spec;
3695         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3696         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3697         struct sfc_mae_action_set *action_set = spec_mae->action_set;
3698         struct sfc_mae_fw_rsrc *fw_rsrc;
3699         int rc;
3700
3701         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
3702
3703         if (outer_rule != NULL) {
3704                 rc = sfc_mae_outer_rule_enable(sa, outer_rule,
3705                                                spec_mae->match_spec);
3706                 if (rc != 0)
3707                         goto fail_outer_rule_enable;
3708         }
3709
3710         if (action_set == NULL) {
3711                 sfc_dbg(sa, "enabled flow=%p (no AR)", flow);
3712                 return 0;
3713         }
3714
3715         rc = sfc_mae_action_set_enable(sa, action_set);
3716         if (rc != 0)
3717                 goto fail_action_set_enable;
3718
3719         if (action_set->n_counters > 0) {
3720                 rc = sfc_mae_counter_start(sa);
3721                 if (rc != 0) {
3722                         sfc_err(sa, "failed to start MAE counters support: %s",
3723                                 rte_strerror(rc));
3724                         goto fail_mae_counter_start;
3725                 }
3726         }
3727
3728         fw_rsrc = &action_set->fw_rsrc;
3729
3730         rc = efx_mae_action_rule_insert(sa->nic, spec_mae->match_spec,
3731                                         NULL, &fw_rsrc->aset_id,
3732                                         &spec_mae->rule_id);
3733         if (rc != 0)
3734                 goto fail_action_rule_insert;
3735
3736         sfc_dbg(sa, "enabled flow=%p: AR_ID=0x%08x",
3737                 flow, spec_mae->rule_id.id);
3738
3739         return 0;
3740
3741 fail_action_rule_insert:
3742 fail_mae_counter_start:
3743         sfc_mae_action_set_disable(sa, action_set);
3744
3745 fail_action_set_enable:
3746         if (outer_rule != NULL)
3747                 sfc_mae_outer_rule_disable(sa, outer_rule);
3748
3749 fail_outer_rule_enable:
3750         return rc;
3751 }
3752
3753 int
3754 sfc_mae_flow_remove(struct sfc_adapter *sa,
3755                     struct rte_flow *flow)
3756 {
3757         struct sfc_flow_spec *spec = &flow->spec;
3758         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3759         struct sfc_mae_action_set *action_set = spec_mae->action_set;
3760         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3761         int rc;
3762
3763         if (action_set == NULL) {
3764                 sfc_dbg(sa, "disabled flow=%p (no AR)", flow);
3765                 goto skip_action_rule;
3766         }
3767
3768         SFC_ASSERT(spec_mae->rule_id.id != EFX_MAE_RSRC_ID_INVALID);
3769
3770         rc = efx_mae_action_rule_remove(sa->nic, &spec_mae->rule_id);
3771         if (rc != 0) {
3772                 sfc_err(sa, "failed to disable flow=%p with AR_ID=0x%08x: %s",
3773                         flow, spec_mae->rule_id.id, strerror(rc));
3774         }
3775         sfc_dbg(sa, "disabled flow=%p with AR_ID=0x%08x",
3776                 flow, spec_mae->rule_id.id);
3777         spec_mae->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
3778
3779         sfc_mae_action_set_disable(sa, action_set);
3780
3781 skip_action_rule:
3782         if (outer_rule != NULL)
3783                 sfc_mae_outer_rule_disable(sa, outer_rule);
3784
3785         return 0;
3786 }
3787
3788 static int
3789 sfc_mae_query_counter(struct sfc_adapter *sa,
3790                       struct sfc_flow_spec_mae *spec,
3791                       const struct rte_flow_action *action,
3792                       struct rte_flow_query_count *data,
3793                       struct rte_flow_error *error)
3794 {
3795         struct sfc_mae_action_set *action_set = spec->action_set;
3796         const struct rte_flow_action_count *conf = action->conf;
3797         unsigned int i;
3798         int rc;
3799
3800         if (action_set == NULL || action_set->n_counters == 0) {
3801                 return rte_flow_error_set(error, EINVAL,
3802                         RTE_FLOW_ERROR_TYPE_ACTION, action,
3803                         "Queried flow rule does not have count actions");
3804         }
3805
3806         for (i = 0; i < action_set->n_counters; i++) {
3807                 /*
3808                  * Get the first available counter of the flow rule if
3809                  * counter ID is not specified.
3810                  */
3811                 if (conf != NULL && action_set->counters[i].rte_id != conf->id)
3812                         continue;
3813
3814                 rc = sfc_mae_counter_get(&sa->mae.counter_registry.counters,
3815                                          &action_set->counters[i], data);
3816                 if (rc != 0) {
3817                         return rte_flow_error_set(error, EINVAL,
3818                                 RTE_FLOW_ERROR_TYPE_ACTION, action,
3819                                 "Queried flow rule counter action is invalid");
3820                 }
3821
3822                 return 0;
3823         }
3824
3825         return rte_flow_error_set(error, ENOENT,
3826                                   RTE_FLOW_ERROR_TYPE_ACTION, action,
3827                                   "No such flow rule action count ID");
3828 }
3829
3830 int
3831 sfc_mae_flow_query(struct rte_eth_dev *dev,
3832                    struct rte_flow *flow,
3833                    const struct rte_flow_action *action,
3834                    void *data,
3835                    struct rte_flow_error *error)
3836 {
3837         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
3838         struct sfc_flow_spec *spec = &flow->spec;
3839         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3840
3841         switch (action->type) {
3842         case RTE_FLOW_ACTION_TYPE_COUNT:
3843                 return sfc_mae_query_counter(sa, spec_mae, action,
3844                                              data, error);
3845         default:
3846                 return rte_flow_error_set(error, ENOTSUP,
3847                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
3848                         "Query for action of this type is not supported");
3849         }
3850 }
3851
3852 int
3853 sfc_mae_switchdev_init(struct sfc_adapter *sa)
3854 {
3855         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
3856         struct sfc_mae *mae = &sa->mae;
3857         efx_mport_sel_t pf;
3858         efx_mport_sel_t phy;
3859         int rc;
3860
3861         sfc_log_init(sa, "entry");
3862
3863         if (!sa->switchdev) {
3864                 sfc_log_init(sa, "switchdev is not enabled - skip");
3865                 return 0;
3866         }
3867
3868         if (mae->status != SFC_MAE_STATUS_SUPPORTED) {
3869                 rc = ENOTSUP;
3870                 sfc_err(sa, "failed to init switchdev - no MAE support");
3871                 goto fail_no_mae;
3872         }
3873
3874         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID,
3875                                             &pf);
3876         if (rc != 0) {
3877                 sfc_err(sa, "failed get PF mport");
3878                 goto fail_pf_get;
3879         }
3880
3881         rc = efx_mae_mport_by_phy_port(encp->enc_assigned_port, &phy);
3882         if (rc != 0) {
3883                 sfc_err(sa, "failed get PHY mport");
3884                 goto fail_phy_get;
3885         }
3886
3887         rc = sfc_mae_rule_add_mport_match_deliver(sa, &pf, &phy,
3888                         SFC_MAE_RULE_PRIO_LOWEST,
3889                         &mae->switchdev_rule_pf_to_ext);
3890         if (rc != 0) {
3891                 sfc_err(sa, "failed add MAE rule to forward from PF to PHY");
3892                 goto fail_pf_add;
3893         }
3894
3895         rc = sfc_mae_rule_add_mport_match_deliver(sa, &phy, &pf,
3896                         SFC_MAE_RULE_PRIO_LOWEST,
3897                         &mae->switchdev_rule_ext_to_pf);
3898         if (rc != 0) {
3899                 sfc_err(sa, "failed add MAE rule to forward from PHY to PF");
3900                 goto fail_phy_add;
3901         }
3902
3903         sfc_log_init(sa, "done");
3904
3905         return 0;
3906
3907 fail_phy_add:
3908         sfc_mae_rule_del(sa, mae->switchdev_rule_pf_to_ext);
3909
3910 fail_pf_add:
3911 fail_phy_get:
3912 fail_pf_get:
3913 fail_no_mae:
3914         sfc_log_init(sa, "failed: %s", rte_strerror(rc));
3915         return rc;
3916 }
3917
3918 void
3919 sfc_mae_switchdev_fini(struct sfc_adapter *sa)
3920 {
3921         struct sfc_mae *mae = &sa->mae;
3922
3923         if (!sa->switchdev)
3924                 return;
3925
3926         sfc_mae_rule_del(sa, mae->switchdev_rule_pf_to_ext);
3927         sfc_mae_rule_del(sa, mae->switchdev_rule_ext_to_pf);
3928 }