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         if (encp->enc_mae_admin) {
 201                 sfc_log_init(sa, "init MAE");
 202                 rc = efx_mae_init(sa->nic);
 203                 if (rc != 0)
 204                         goto fail_mae_init;
 205
 206                 sfc_log_init(sa, "get MAE limits");
 207                 rc = efx_mae_get_limits(sa->nic, &limits);
 208                 if (rc != 0)
 209                         goto fail_mae_get_limits;
 210
 211                 sfc_log_init(sa, "init MAE counter registry");
 212                 rc = sfc_mae_counter_registry_init(&mae->counter_registry,
 213                                                    limits.eml_max_n_counters);
 214                 if (rc != 0) {
 215                         sfc_err(sa, "failed to init MAE counters registry for %u entries: %s",
 216                                 limits.eml_max_n_counters, rte_strerror(rc));
 217                         goto fail_counter_registry_init;
 218                 }
 219         }
 220
 221         sfc_log_init(sa, "assign entity MPORT");
 222         rc = sfc_mae_assign_entity_mport(sa, &entity_mport);
 223         if (rc != 0)
 224                 goto fail_mae_assign_entity_mport;
 225
 226         sfc_log_init(sa, "assign RTE switch domain");
 227         rc = sfc_mae_assign_switch_domain(sa, &mae->switch_domain_id);
 228         if (rc != 0)
 229                 goto fail_mae_assign_switch_domain;
 230
 231         sfc_log_init(sa, "assign RTE switch port");
 232         switch_port_request.type = SFC_MAE_SWITCH_PORT_INDEPENDENT;
 233         switch_port_request.entity_mportp = &entity_mport;
 234         /* RTE ethdev MPORT matches that of the entity for independent ports. */
 235         switch_port_request.ethdev_mportp = &entity_mport;
 236         switch_port_request.ethdev_port_id = sas->port_id;
 237         switch_port_request.port_data.indep.mae_admin =
 238                 encp->enc_mae_admin == B_TRUE;
 239         rc = sfc_mae_assign_switch_port(mae->switch_domain_id,
 240                                         &switch_port_request,
 241                                         &mae->switch_port_id);
 242         if (rc != 0)
 243                 goto fail_mae_assign_switch_port;
 244
 245         if (encp->enc_mae_admin) {
 246                 sfc_log_init(sa, "allocate encap. header bounce buffer");
 247                 bounce_eh->buf_size = limits.eml_encap_header_size_limit;
 248                 bounce_eh->buf = rte_malloc("sfc_mae_bounce_eh",
 249                                             bounce_eh->buf_size, 0);
 250                 if (bounce_eh->buf == NULL)
 251                         goto fail_mae_alloc_bounce_eh;
 252
 253                 mae->nb_outer_rule_prios_max = limits.eml_max_n_outer_prios;
 254                 mae->nb_action_rule_prios_max = limits.eml_max_n_action_prios;
 255                 mae->encap_types_supported = limits.eml_encap_types_supported;
 256         }
 257
 258         TAILQ_INIT(&mae->outer_rules);
 259         TAILQ_INIT(&mae->encap_headers);
 260         TAILQ_INIT(&mae->action_sets);
 261
 262         if (encp->enc_mae_admin)
 263                 mae->status = SFC_MAE_STATUS_ADMIN;
 264         else
 265                 mae->status = SFC_MAE_STATUS_SUPPORTED;
 266
 267         sfc_log_init(sa, "done");
 268
 269         return 0;
 270
 271 fail_mae_alloc_bounce_eh:
 272 fail_mae_assign_switch_port:
 273 fail_mae_assign_switch_domain:
 274 fail_mae_assign_entity_mport:
 275         if (encp->enc_mae_admin)
 276                 sfc_mae_counter_registry_fini(&mae->counter_registry);
 277
 278 fail_counter_registry_init:
 279 fail_mae_get_limits:
 280         if (encp->enc_mae_admin)
 281                 efx_mae_fini(sa->nic);
 282
 283 fail_mae_init:
 284         sfc_log_init(sa, "failed %d", rc);
 285
 286         return rc;
 287 }
 288
 289 void
 290 sfc_mae_detach(struct sfc_adapter *sa)
 291 {
 292         struct sfc_mae *mae = &sa->mae;
 293         enum sfc_mae_status status_prev = mae->status;
 294
 295         sfc_log_init(sa, "entry");
 296
 297         mae->nb_action_rule_prios_max = 0;
 298         mae->status = SFC_MAE_STATUS_UNKNOWN;
 299
 300         if (status_prev != SFC_MAE_STATUS_ADMIN)
 301                 return;
 302
 303         rte_free(mae->bounce_eh.buf);
 304         sfc_mae_counter_registry_fini(&mae->counter_registry);
 305
 306         efx_mae_fini(sa->nic);
 307
 308         sfc_log_init(sa, "done");
 309 }
 310
 311 static struct sfc_mae_outer_rule *
 312 sfc_mae_outer_rule_attach(struct sfc_adapter *sa,
 313                           const efx_mae_match_spec_t *match_spec,
 314                           efx_tunnel_protocol_t encap_type)
 315 {
 316         struct sfc_mae_outer_rule *rule;
 317         struct sfc_mae *mae = &sa->mae;
 318
 319         SFC_ASSERT(sfc_adapter_is_locked(sa));
 320
 321         TAILQ_FOREACH(rule, &mae->outer_rules, entries) {
 322                 if (efx_mae_match_specs_equal(rule->match_spec, match_spec) &&
 323                     rule->encap_type == encap_type) {
 324                         sfc_dbg(sa, "attaching to outer_rule=%p", rule);
 325                         ++(rule->refcnt);
 326                         return rule;
 327                 }
 328         }
 329
 330         return NULL;
 331 }
 332
 333 static int
 334 sfc_mae_outer_rule_add(struct sfc_adapter *sa,
 335                        efx_mae_match_spec_t *match_spec,
 336                        efx_tunnel_protocol_t encap_type,
 337                        struct sfc_mae_outer_rule **rulep)
 338 {
 339         struct sfc_mae_outer_rule *rule;
 340         struct sfc_mae *mae = &sa->mae;
 341
 342         SFC_ASSERT(sfc_adapter_is_locked(sa));
 343
 344         rule = rte_zmalloc("sfc_mae_outer_rule", sizeof(*rule), 0);
 345         if (rule == NULL)
 346                 return ENOMEM;
 347
 348         rule->refcnt = 1;
 349         rule->match_spec = match_spec;
 350         rule->encap_type = encap_type;
 351
 352         rule->fw_rsrc.rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 353
 354         TAILQ_INSERT_TAIL(&mae->outer_rules, rule, entries);
 355
 356         *rulep = rule;
 357
 358         sfc_dbg(sa, "added outer_rule=%p", rule);
 359
 360         return 0;
 361 }
 362
 363 static void
 364 sfc_mae_outer_rule_del(struct sfc_adapter *sa,
 365                        struct sfc_mae_outer_rule *rule)
 366 {
 367         struct sfc_mae *mae = &sa->mae;
 368
 369         SFC_ASSERT(sfc_adapter_is_locked(sa));
 370         SFC_ASSERT(rule->refcnt != 0);
 371
 372         --(rule->refcnt);
 373
 374         if (rule->refcnt != 0)
 375                 return;
 376
 377         if (rule->fw_rsrc.rule_id.id != EFX_MAE_RSRC_ID_INVALID ||
 378             rule->fw_rsrc.refcnt != 0) {
 379                 sfc_err(sa, "deleting outer_rule=%p abandons its FW resource: OR_ID=0x%08x, refcnt=%u",
 380                         rule, rule->fw_rsrc.rule_id.id, rule->fw_rsrc.refcnt);
 381         }
 382
 383         efx_mae_match_spec_fini(sa->nic, rule->match_spec);
 384
 385         TAILQ_REMOVE(&mae->outer_rules, rule, entries);
 386         rte_free(rule);
 387
 388         sfc_dbg(sa, "deleted outer_rule=%p", rule);
 389 }
 390
 391 static int
 392 sfc_mae_outer_rule_enable(struct sfc_adapter *sa,
 393                           struct sfc_mae_outer_rule *rule,
 394                           efx_mae_match_spec_t *match_spec_action)
 395 {
 396         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 397         int rc;
 398
 399         SFC_ASSERT(sfc_adapter_is_locked(sa));
 400
 401         if (fw_rsrc->refcnt == 0) {
 402                 SFC_ASSERT(fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 403                 SFC_ASSERT(rule->match_spec != NULL);
 404
 405                 rc = efx_mae_outer_rule_insert(sa->nic, rule->match_spec,
 406                                                rule->encap_type,
 407                                                &fw_rsrc->rule_id);
 408                 if (rc != 0) {
 409                         sfc_err(sa, "failed to enable outer_rule=%p: %s",
 410                                 rule, strerror(rc));
 411                         return rc;
 412                 }
 413         }
 414
 415         if (match_spec_action == NULL)
 416                 goto skip_action_rule;
 417
 418         rc = efx_mae_match_spec_outer_rule_id_set(match_spec_action,
 419                                                   &fw_rsrc->rule_id);
 420         if (rc != 0) {
 421                 if (fw_rsrc->refcnt == 0) {
 422                         (void)efx_mae_outer_rule_remove(sa->nic,
 423                                                         &fw_rsrc->rule_id);
 424                         fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 425                 }
 426
 427                 sfc_err(sa, "can't match on outer rule ID: %s", strerror(rc));
 428
 429                 return rc;
 430         }
 431
 432 skip_action_rule:
 433         if (fw_rsrc->refcnt == 0) {
 434                 sfc_dbg(sa, "enabled outer_rule=%p: OR_ID=0x%08x",
 435                         rule, fw_rsrc->rule_id.id);
 436         }
 437
 438         ++(fw_rsrc->refcnt);
 439
 440         return 0;
 441 }
 442
 443 static void
 444 sfc_mae_outer_rule_disable(struct sfc_adapter *sa,
 445                            struct sfc_mae_outer_rule *rule)
 446 {
 447         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
 448         int rc;
 449
 450         SFC_ASSERT(sfc_adapter_is_locked(sa));
 451
 452         if (fw_rsrc->rule_id.id == EFX_MAE_RSRC_ID_INVALID ||
 453             fw_rsrc->refcnt == 0) {
 454                 sfc_err(sa, "failed to disable outer_rule=%p: already disabled; OR_ID=0x%08x, refcnt=%u",
 455                         rule, fw_rsrc->rule_id.id, fw_rsrc->refcnt);
 456                 return;
 457         }
 458
 459         if (fw_rsrc->refcnt == 1) {
 460                 rc = efx_mae_outer_rule_remove(sa->nic, &fw_rsrc->rule_id);
 461                 if (rc == 0) {
 462                         sfc_dbg(sa, "disabled outer_rule=%p with OR_ID=0x%08x",
 463                                 rule, fw_rsrc->rule_id.id);
 464                 } else {
 465                         sfc_err(sa, "failed to disable outer_rule=%p with OR_ID=0x%08x: %s",
 466                                 rule, fw_rsrc->rule_id.id, strerror(rc));
 467                 }
 468                 fw_rsrc->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
 469         }
 470
 471         --(fw_rsrc->refcnt);
 472 }
 473
 474 static struct sfc_mae_encap_header *
 475 sfc_mae_encap_header_attach(struct sfc_adapter *sa,
 476                             const struct sfc_mae_bounce_eh *bounce_eh)
 477 {
 478         struct sfc_mae_encap_header *encap_header;
 479         struct sfc_mae *mae = &sa->mae;
 480
 481         SFC_ASSERT(sfc_adapter_is_locked(sa));
 482
 483         TAILQ_FOREACH(encap_header, &mae->encap_headers, entries) {
 484                 if (encap_header->size == bounce_eh->size &&
 485                     memcmp(encap_header->buf, bounce_eh->buf,
 486                            bounce_eh->size) == 0) {
 487                         sfc_dbg(sa, "attaching to encap_header=%p",
 488                                 encap_header);
 489                         ++(encap_header->refcnt);
 490                         return encap_header;
 491                 }
 492         }
 493
 494         return NULL;
 495 }
 496
 497 static int
 498 sfc_mae_encap_header_add(struct sfc_adapter *sa,
 499                          const struct sfc_mae_bounce_eh *bounce_eh,
 500                          struct sfc_mae_encap_header **encap_headerp)
 501 {
 502         struct sfc_mae_encap_header *encap_header;
 503         struct sfc_mae *mae = &sa->mae;
 504
 505         SFC_ASSERT(sfc_adapter_is_locked(sa));
 506
 507         encap_header = rte_zmalloc("sfc_mae_encap_header",
 508                                    sizeof(*encap_header), 0);
 509         if (encap_header == NULL)
 510                 return ENOMEM;
 511
 512         encap_header->size = bounce_eh->size;
 513
 514         encap_header->buf = rte_malloc("sfc_mae_encap_header_buf",
 515                                        encap_header->size, 0);
 516         if (encap_header->buf == NULL) {
 517                 rte_free(encap_header);
 518                 return ENOMEM;
 519         }
 520
 521         rte_memcpy(encap_header->buf, bounce_eh->buf, bounce_eh->size);
 522
 523         encap_header->refcnt = 1;
 524         encap_header->type = bounce_eh->type;
 525         encap_header->fw_rsrc.eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 526
 527         TAILQ_INSERT_TAIL(&mae->encap_headers, encap_header, entries);
 528
 529         *encap_headerp = encap_header;
 530
 531         sfc_dbg(sa, "added encap_header=%p", encap_header);
 532
 533         return 0;
 534 }
 535
 536 static void
 537 sfc_mae_encap_header_del(struct sfc_adapter *sa,
 538                        struct sfc_mae_encap_header *encap_header)
 539 {
 540         struct sfc_mae *mae = &sa->mae;
 541
 542         if (encap_header == NULL)
 543                 return;
 544
 545         SFC_ASSERT(sfc_adapter_is_locked(sa));
 546         SFC_ASSERT(encap_header->refcnt != 0);
 547
 548         --(encap_header->refcnt);
 549
 550         if (encap_header->refcnt != 0)
 551                 return;
 552
 553         if (encap_header->fw_rsrc.eh_id.id != EFX_MAE_RSRC_ID_INVALID ||
 554             encap_header->fw_rsrc.refcnt != 0) {
 555                 sfc_err(sa, "deleting encap_header=%p abandons its FW resource: EH_ID=0x%08x, refcnt=%u",
 556                         encap_header, encap_header->fw_rsrc.eh_id.id,
 557                         encap_header->fw_rsrc.refcnt);
 558         }
 559
 560         TAILQ_REMOVE(&mae->encap_headers, encap_header, entries);
 561         rte_free(encap_header->buf);
 562         rte_free(encap_header);
 563
 564         sfc_dbg(sa, "deleted encap_header=%p", encap_header);
 565 }
 566
 567 static int
 568 sfc_mae_encap_header_enable(struct sfc_adapter *sa,
 569                             struct sfc_mae_encap_header *encap_header,
 570                             efx_mae_actions_t *action_set_spec)
 571 {
 572         struct sfc_mae_fw_rsrc *fw_rsrc;
 573         int rc;
 574
 575         if (encap_header == NULL)
 576                 return 0;
 577
 578         SFC_ASSERT(sfc_adapter_is_locked(sa));
 579
 580         fw_rsrc = &encap_header->fw_rsrc;
 581
 582         if (fw_rsrc->refcnt == 0) {
 583                 SFC_ASSERT(fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID);
 584                 SFC_ASSERT(encap_header->buf != NULL);
 585                 SFC_ASSERT(encap_header->size != 0);
 586
 587                 rc = efx_mae_encap_header_alloc(sa->nic, encap_header->type,
 588                                                 encap_header->buf,
 589                                                 encap_header->size,
 590                                                 &fw_rsrc->eh_id);
 591                 if (rc != 0) {
 592                         sfc_err(sa, "failed to enable encap_header=%p: %s",
 593                                 encap_header, strerror(rc));
 594                         return rc;
 595                 }
 596         }
 597
 598         rc = efx_mae_action_set_fill_in_eh_id(action_set_spec,
 599                                               &fw_rsrc->eh_id);
 600         if (rc != 0) {
 601                 if (fw_rsrc->refcnt == 0) {
 602                         (void)efx_mae_encap_header_free(sa->nic,
 603                                                         &fw_rsrc->eh_id);
 604                         fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 605                 }
 606
 607                 sfc_err(sa, "can't fill in encap. header ID: %s", strerror(rc));
 608
 609                 return rc;
 610         }
 611
 612         if (fw_rsrc->refcnt == 0) {
 613                 sfc_dbg(sa, "enabled encap_header=%p: EH_ID=0x%08x",
 614                         encap_header, fw_rsrc->eh_id.id);
 615         }
 616
 617         ++(fw_rsrc->refcnt);
 618
 619         return 0;
 620 }
 621
 622 static void
 623 sfc_mae_encap_header_disable(struct sfc_adapter *sa,
 624                              struct sfc_mae_encap_header *encap_header)
 625 {
 626         struct sfc_mae_fw_rsrc *fw_rsrc;
 627         int rc;
 628
 629         if (encap_header == NULL)
 630                 return;
 631
 632         SFC_ASSERT(sfc_adapter_is_locked(sa));
 633
 634         fw_rsrc = &encap_header->fw_rsrc;
 635
 636         if (fw_rsrc->eh_id.id == EFX_MAE_RSRC_ID_INVALID ||
 637             fw_rsrc->refcnt == 0) {
 638                 sfc_err(sa, "failed to disable encap_header=%p: already disabled; EH_ID=0x%08x, refcnt=%u",
 639                         encap_header, fw_rsrc->eh_id.id, fw_rsrc->refcnt);
 640                 return;
 641         }
 642
 643         if (fw_rsrc->refcnt == 1) {
 644                 rc = efx_mae_encap_header_free(sa->nic, &fw_rsrc->eh_id);
 645                 if (rc == 0) {
 646                         sfc_dbg(sa, "disabled encap_header=%p with EH_ID=0x%08x",
 647                                 encap_header, fw_rsrc->eh_id.id);
 648                 } else {
 649                         sfc_err(sa, "failed to disable encap_header=%p with EH_ID=0x%08x: %s",
 650                                 encap_header, fw_rsrc->eh_id.id, strerror(rc));
 651                 }
 652                 fw_rsrc->eh_id.id = EFX_MAE_RSRC_ID_INVALID;
 653         }
 654
 655         --(fw_rsrc->refcnt);
 656 }
 657
 658 static int
 659 sfc_mae_counters_enable(struct sfc_adapter *sa,
 660                         struct sfc_mae_counter_id *counters,
 661                         unsigned int n_counters,
 662                         efx_mae_actions_t *action_set_spec)
 663 {
 664         int rc;
 665
 666         sfc_log_init(sa, "entry");
 667
 668         if (n_counters == 0) {
 669                 sfc_log_init(sa, "no counters - skip");
 670                 return 0;
 671         }
 672
 673         SFC_ASSERT(sfc_adapter_is_locked(sa));
 674         SFC_ASSERT(n_counters == 1);
 675
 676         rc = sfc_mae_counter_enable(sa, &counters[0]);
 677         if (rc != 0) {
 678                 sfc_err(sa, "failed to enable MAE counter %u: %s",
 679                         counters[0].mae_id.id, rte_strerror(rc));
 680                 goto fail_counter_add;
 681         }
 682
 683         rc = efx_mae_action_set_fill_in_counter_id(action_set_spec,
 684                                                    &counters[0].mae_id);
 685         if (rc != 0) {
 686                 sfc_err(sa, "failed to fill in MAE counter %u in action set: %s",
 687                         counters[0].mae_id.id, rte_strerror(rc));
 688                 goto fail_fill_in_id;
 689         }
 690
 691         return 0;
 692
 693 fail_fill_in_id:
 694         (void)sfc_mae_counter_disable(sa, &counters[0]);
 695
 696 fail_counter_add:
 697         sfc_log_init(sa, "failed: %s", rte_strerror(rc));
 698         return rc;
 699 }
 700
 701 static int
 702 sfc_mae_counters_disable(struct sfc_adapter *sa,
 703                          struct sfc_mae_counter_id *counters,
 704                          unsigned int n_counters)
 705 {
 706         if (n_counters == 0)
 707                 return 0;
 708
 709         SFC_ASSERT(sfc_adapter_is_locked(sa));
 710         SFC_ASSERT(n_counters == 1);
 711
 712         if (counters[0].mae_id.id == EFX_MAE_RSRC_ID_INVALID) {
 713                 sfc_err(sa, "failed to disable: already disabled");
 714                 return EALREADY;
 715         }
 716
 717         return sfc_mae_counter_disable(sa, &counters[0]);
 718 }
 719
 720 static struct sfc_mae_action_set *
 721 sfc_mae_action_set_attach(struct sfc_adapter *sa,
 722                           const struct sfc_mae_encap_header *encap_header,
 723                           unsigned int n_count,
 724                           const efx_mae_actions_t *spec)
 725 {
 726         struct sfc_mae_action_set *action_set;
 727         struct sfc_mae *mae = &sa->mae;
 728
 729         SFC_ASSERT(sfc_adapter_is_locked(sa));
 730
 731         TAILQ_FOREACH(action_set, &mae->action_sets, entries) {
 732                 /*
 733                  * Shared counters are not supported, hence action sets with
 734                  * COUNT are not attachable.
 735                  */
 736                 if (action_set->encap_header == encap_header &&
 737                     n_count == 0 &&
 738                     efx_mae_action_set_specs_equal(action_set->spec, spec)) {
 739                         sfc_dbg(sa, "attaching to action_set=%p", action_set);
 740                         ++(action_set->refcnt);
 741                         return action_set;
 742                 }
 743         }
 744
 745         return NULL;
 746 }
 747
 748 static int
 749 sfc_mae_action_set_add(struct sfc_adapter *sa,
 750                        const struct rte_flow_action actions[],
 751                        efx_mae_actions_t *spec,
 752                        struct sfc_mae_encap_header *encap_header,
 753                        uint64_t *ft_group_hit_counter,
 754                        struct sfc_flow_tunnel *ft,
 755                        unsigned int n_counters,
 756                        struct sfc_mae_action_set **action_setp)
 757 {
 758         struct sfc_mae_action_set *action_set;
 759         struct sfc_mae *mae = &sa->mae;
 760         unsigned int i;
 761
 762         SFC_ASSERT(sfc_adapter_is_locked(sa));
 763
 764         action_set = rte_zmalloc("sfc_mae_action_set", sizeof(*action_set), 0);
 765         if (action_set == NULL) {
 766                 sfc_err(sa, "failed to alloc action set");
 767                 return ENOMEM;
 768         }
 769
 770         if (n_counters > 0) {
 771                 const struct rte_flow_action *action;
 772
 773                 action_set->counters = rte_malloc("sfc_mae_counter_ids",
 774                         sizeof(action_set->counters[0]) * n_counters, 0);
 775                 if (action_set->counters == NULL) {
 776                         rte_free(action_set);
 777                         sfc_err(sa, "failed to alloc counters");
 778                         return ENOMEM;
 779                 }
 780
 781                 for (i = 0; i < n_counters; ++i) {
 782                         action_set->counters[i].rte_id_valid = B_FALSE;
 783                         action_set->counters[i].mae_id.id =
 784                                 EFX_MAE_RSRC_ID_INVALID;
 785
 786                         action_set->counters[i].ft_group_hit_counter =
 787                                 ft_group_hit_counter;
 788                         action_set->counters[i].ft = ft;
 789                 }
 790
 791                 for (action = actions, i = 0;
 792                      action->type != RTE_FLOW_ACTION_TYPE_END && i < n_counters;
 793                      ++action) {
 794                         const struct rte_flow_action_count *conf;
 795
 796                         if (action->type != RTE_FLOW_ACTION_TYPE_COUNT)
 797                                 continue;
 798
 799                         conf = action->conf;
 800
 801                         action_set->counters[i].rte_id_valid = B_TRUE;
 802                         action_set->counters[i].rte_id = conf->id;
 803                         i++;
 804                 }
 805                 action_set->n_counters = n_counters;
 806         }
 807
 808         action_set->refcnt = 1;
 809         action_set->spec = spec;
 810         action_set->encap_header = encap_header;
 811
 812         action_set->fw_rsrc.aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 813
 814         TAILQ_INSERT_TAIL(&mae->action_sets, action_set, entries);
 815
 816         *action_setp = action_set;
 817
 818         sfc_dbg(sa, "added action_set=%p", action_set);
 819
 820         return 0;
 821 }
 822
 823 static void
 824 sfc_mae_action_set_del(struct sfc_adapter *sa,
 825                        struct sfc_mae_action_set *action_set)
 826 {
 827         struct sfc_mae *mae = &sa->mae;
 828
 829         SFC_ASSERT(sfc_adapter_is_locked(sa));
 830         SFC_ASSERT(action_set->refcnt != 0);
 831
 832         --(action_set->refcnt);
 833
 834         if (action_set->refcnt != 0)
 835                 return;
 836
 837         if (action_set->fw_rsrc.aset_id.id != EFX_MAE_RSRC_ID_INVALID ||
 838             action_set->fw_rsrc.refcnt != 0) {
 839                 sfc_err(sa, "deleting action_set=%p abandons its FW resource: AS_ID=0x%08x, refcnt=%u",
 840                         action_set, action_set->fw_rsrc.aset_id.id,
 841                         action_set->fw_rsrc.refcnt);
 842         }
 843
 844         efx_mae_action_set_spec_fini(sa->nic, action_set->spec);
 845         sfc_mae_encap_header_del(sa, action_set->encap_header);
 846         if (action_set->n_counters > 0) {
 847                 SFC_ASSERT(action_set->n_counters == 1);
 848                 SFC_ASSERT(action_set->counters[0].mae_id.id ==
 849                            EFX_MAE_RSRC_ID_INVALID);
 850                 rte_free(action_set->counters);
 851         }
 852         TAILQ_REMOVE(&mae->action_sets, action_set, entries);
 853         rte_free(action_set);
 854
 855         sfc_dbg(sa, "deleted action_set=%p", action_set);
 856 }
 857
 858 static int
 859 sfc_mae_action_set_enable(struct sfc_adapter *sa,
 860                           struct sfc_mae_action_set *action_set)
 861 {
 862         struct sfc_mae_encap_header *encap_header = action_set->encap_header;
 863         struct sfc_mae_counter_id *counters = action_set->counters;
 864         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 865         int rc;
 866
 867         SFC_ASSERT(sfc_adapter_is_locked(sa));
 868
 869         if (fw_rsrc->refcnt == 0) {
 870                 SFC_ASSERT(fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID);
 871                 SFC_ASSERT(action_set->spec != NULL);
 872
 873                 rc = sfc_mae_encap_header_enable(sa, encap_header,
 874                                                  action_set->spec);
 875                 if (rc != 0)
 876                         return rc;
 877
 878                 rc = sfc_mae_counters_enable(sa, counters,
 879                                              action_set->n_counters,
 880                                              action_set->spec);
 881                 if (rc != 0) {
 882                         sfc_err(sa, "failed to enable %u MAE counters: %s",
 883                                 action_set->n_counters, rte_strerror(rc));
 884
 885                         sfc_mae_encap_header_disable(sa, encap_header);
 886                         return rc;
 887                 }
 888
 889                 rc = efx_mae_action_set_alloc(sa->nic, action_set->spec,
 890                                               &fw_rsrc->aset_id);
 891                 if (rc != 0) {
 892                         sfc_err(sa, "failed to enable action_set=%p: %s",
 893                                 action_set, strerror(rc));
 894
 895                         (void)sfc_mae_counters_disable(sa, counters,
 896                                                        action_set->n_counters);
 897                         sfc_mae_encap_header_disable(sa, encap_header);
 898                         return rc;
 899                 }
 900
 901                 sfc_dbg(sa, "enabled action_set=%p: AS_ID=0x%08x",
 902                         action_set, fw_rsrc->aset_id.id);
 903         }
 904
 905         ++(fw_rsrc->refcnt);
 906
 907         return 0;
 908 }
 909
 910 static void
 911 sfc_mae_action_set_disable(struct sfc_adapter *sa,
 912                            struct sfc_mae_action_set *action_set)
 913 {
 914         struct sfc_mae_fw_rsrc *fw_rsrc = &action_set->fw_rsrc;
 915         int rc;
 916
 917         SFC_ASSERT(sfc_adapter_is_locked(sa));
 918
 919         if (fw_rsrc->aset_id.id == EFX_MAE_RSRC_ID_INVALID ||
 920             fw_rsrc->refcnt == 0) {
 921                 sfc_err(sa, "failed to disable action_set=%p: already disabled; AS_ID=0x%08x, refcnt=%u",
 922                         action_set, fw_rsrc->aset_id.id, fw_rsrc->refcnt);
 923                 return;
 924         }
 925
 926         if (fw_rsrc->refcnt == 1) {
 927                 rc = efx_mae_action_set_free(sa->nic, &fw_rsrc->aset_id);
 928                 if (rc == 0) {
 929                         sfc_dbg(sa, "disabled action_set=%p with AS_ID=0x%08x",
 930                                 action_set, fw_rsrc->aset_id.id);
 931                 } else {
 932                         sfc_err(sa, "failed to disable action_set=%p with AS_ID=0x%08x: %s",
 933                                 action_set, fw_rsrc->aset_id.id, strerror(rc));
 934                 }
 935                 fw_rsrc->aset_id.id = EFX_MAE_RSRC_ID_INVALID;
 936
 937                 rc = sfc_mae_counters_disable(sa, action_set->counters,
 938                                               action_set->n_counters);
 939                 if (rc != 0) {
 940                         sfc_err(sa, "failed to disable %u MAE counters: %s",
 941                                 action_set->n_counters, rte_strerror(rc));
 942                 }
 943
 944                 sfc_mae_encap_header_disable(sa, action_set->encap_header);
 945         }
 946
 947         --(fw_rsrc->refcnt);
 948 }
 949
 950 void
 951 sfc_mae_flow_cleanup(struct sfc_adapter *sa,
 952                      struct rte_flow *flow)
 953 {
 954         struct sfc_flow_spec *spec;
 955         struct sfc_flow_spec_mae *spec_mae;
 956
 957         if (flow == NULL)
 958                 return;
 959
 960         spec = &flow->spec;
 961
 962         if (spec == NULL)
 963                 return;
 964
 965         spec_mae = &spec->mae;
 966
 967         if (spec_mae->ft != NULL) {
 968                 if (spec_mae->ft_rule_type == SFC_FT_RULE_JUMP)
 969                         spec_mae->ft->jump_rule_is_set = B_FALSE;
 970
 971                 SFC_ASSERT(spec_mae->ft->refcnt != 0);
 972                 --(spec_mae->ft->refcnt);
 973         }
 974
 975         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
 976
 977         if (spec_mae->outer_rule != NULL)
 978                 sfc_mae_outer_rule_del(sa, spec_mae->outer_rule);
 979
 980         if (spec_mae->action_set != NULL)
 981                 sfc_mae_action_set_del(sa, spec_mae->action_set);
 982
 983         if (spec_mae->match_spec != NULL)
 984                 efx_mae_match_spec_fini(sa->nic, spec_mae->match_spec);
 985 }
 986
 987 static int
 988 sfc_mae_set_ethertypes(struct sfc_mae_parse_ctx *ctx)
 989 {
 990         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
 991         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
 992         const efx_mae_field_id_t field_ids[] = {
 993                 EFX_MAE_FIELD_VLAN0_PROTO_BE,
 994                 EFX_MAE_FIELD_VLAN1_PROTO_BE,
 995         };
 996         const struct sfc_mae_ethertype *et;
 997         unsigned int i;
 998         int rc;
 999
1000         /*
1001          * In accordance with RTE flow API convention, the innermost L2
1002          * item's "type" ("inner_type") is a L3 EtherType. If there is
1003          * no L3 item, it's 0x0000/0x0000.
1004          */
1005         et = &pdata->ethertypes[pdata->nb_vlan_tags];
1006         rc = efx_mae_match_spec_field_set(ctx->match_spec,
1007                                           fremap[EFX_MAE_FIELD_ETHER_TYPE_BE],
1008                                           sizeof(et->value),
1009                                           (const uint8_t *)&et->value,
1010                                           sizeof(et->mask),
1011                                           (const uint8_t *)&et->mask);
1012         if (rc != 0)
1013                 return rc;
1014
1015         /*
1016          * sfc_mae_rule_parse_item_vlan() has already made sure
1017          * that pdata->nb_vlan_tags does not exceed this figure.
1018          */
1019         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1020
1021         for (i = 0; i < pdata->nb_vlan_tags; ++i) {
1022                 et = &pdata->ethertypes[i];
1023
1024                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
1025                                                   fremap[field_ids[i]],
1026                                                   sizeof(et->value),
1027                                                   (const uint8_t *)&et->value,
1028                                                   sizeof(et->mask),
1029                                                   (const uint8_t *)&et->mask);
1030                 if (rc != 0)
1031                         return rc;
1032         }
1033
1034         return 0;
1035 }
1036
1037 static int
1038 sfc_mae_rule_process_pattern_data(struct sfc_mae_parse_ctx *ctx,
1039                                   struct rte_flow_error *error)
1040 {
1041         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
1042         struct sfc_mae_pattern_data *pdata = &ctx->pattern_data;
1043         struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
1044         const rte_be16_t supported_tpids[] = {
1045                 /* VLAN standard TPID (always the first element) */
1046                 RTE_BE16(RTE_ETHER_TYPE_VLAN),
1047
1048                 /* Double-tagging TPIDs */
1049                 RTE_BE16(RTE_ETHER_TYPE_QINQ),
1050                 RTE_BE16(RTE_ETHER_TYPE_QINQ1),
1051                 RTE_BE16(RTE_ETHER_TYPE_QINQ2),
1052                 RTE_BE16(RTE_ETHER_TYPE_QINQ3),
1053         };
1054         bool enforce_tag_presence[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {0};
1055         unsigned int nb_supported_tpids = RTE_DIM(supported_tpids);
1056         unsigned int ethertype_idx;
1057         const uint8_t *valuep;
1058         const uint8_t *maskp;
1059         int rc;
1060
1061         if (pdata->innermost_ethertype_restriction.mask != 0 &&
1062             pdata->nb_vlan_tags < SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1063                 /*
1064                  * If a single item VLAN is followed by a L3 item, value
1065                  * of "type" in item ETH can't be a double-tagging TPID.
1066                  */
1067                 nb_supported_tpids = 1;
1068         }
1069
1070         /*
1071          * sfc_mae_rule_parse_item_vlan() has already made sure
1072          * that pdata->nb_vlan_tags does not exceed this figure.
1073          */
1074         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1075
1076         for (ethertype_idx = 0;
1077              ethertype_idx < pdata->nb_vlan_tags; ++ethertype_idx) {
1078                 rte_be16_t tpid_v = ethertypes[ethertype_idx].value;
1079                 rte_be16_t tpid_m = ethertypes[ethertype_idx].mask;
1080                 unsigned int tpid_idx;
1081
1082                 /*
1083                  * This loop can have only two iterations. On the second one,
1084                  * drop outer tag presence enforcement bit because the inner
1085                  * tag presence automatically assumes that for the outer tag.
1086                  */
1087                 enforce_tag_presence[0] = B_FALSE;
1088
1089                 if (tpid_m == RTE_BE16(0)) {
1090                         if (pdata->tci_masks[ethertype_idx] == RTE_BE16(0))
1091                                 enforce_tag_presence[ethertype_idx] = B_TRUE;
1092
1093                         /* No match on this field, and no value check. */
1094                         nb_supported_tpids = 1;
1095                         continue;
1096                 }
1097
1098                 /* Exact match is supported only. */
1099                 if (tpid_m != RTE_BE16(0xffff)) {
1100                         sfc_err(ctx->sa, "TPID mask must be 0x0 or 0xffff; got 0x%04x",
1101                                 rte_be_to_cpu_16(tpid_m));
1102                         rc = EINVAL;
1103                         goto fail;
1104                 }
1105
1106                 for (tpid_idx = pdata->nb_vlan_tags - ethertype_idx - 1;
1107                      tpid_idx < nb_supported_tpids; ++tpid_idx) {
1108                         if (tpid_v == supported_tpids[tpid_idx])
1109                                 break;
1110                 }
1111
1112                 if (tpid_idx == nb_supported_tpids) {
1113                         sfc_err(ctx->sa, "TPID 0x%04x is unsupported",
1114                                 rte_be_to_cpu_16(tpid_v));
1115                         rc = EINVAL;
1116                         goto fail;
1117                 }
1118
1119                 nb_supported_tpids = 1;
1120         }
1121
1122         if (pdata->innermost_ethertype_restriction.mask == RTE_BE16(0xffff)) {
1123                 struct sfc_mae_ethertype *et = &ethertypes[ethertype_idx];
1124                 rte_be16_t enforced_et;
1125
1126                 enforced_et = pdata->innermost_ethertype_restriction.value;
1127
1128                 if (et->mask == 0) {
1129                         et->mask = RTE_BE16(0xffff);
1130                         et->value = enforced_et;
1131                 } else if (et->mask != RTE_BE16(0xffff) ||
1132                            et->value != enforced_et) {
1133                         sfc_err(ctx->sa, "L3 EtherType must be 0x0/0x0 or 0x%04x/0xffff; got 0x%04x/0x%04x",
1134                                 rte_be_to_cpu_16(enforced_et),
1135                                 rte_be_to_cpu_16(et->value),
1136                                 rte_be_to_cpu_16(et->mask));
1137                         rc = EINVAL;
1138                         goto fail;
1139                 }
1140         }
1141
1142         /*
1143          * Now, when the number of VLAN tags is known, set fields
1144          * ETHER_TYPE, VLAN0_PROTO and VLAN1_PROTO so that the first
1145          * one is either a valid L3 EtherType (or 0x0000/0x0000),
1146          * and the last two are valid TPIDs (or 0x0000/0x0000).
1147          */
1148         rc = sfc_mae_set_ethertypes(ctx);
1149         if (rc != 0)
1150                 goto fail;
1151
1152         if (pdata->l3_next_proto_restriction_mask == 0xff) {
1153                 if (pdata->l3_next_proto_mask == 0) {
1154                         pdata->l3_next_proto_mask = 0xff;
1155                         pdata->l3_next_proto_value =
1156                                 pdata->l3_next_proto_restriction_value;
1157                 } else if (pdata->l3_next_proto_mask != 0xff ||
1158                            pdata->l3_next_proto_value !=
1159                            pdata->l3_next_proto_restriction_value) {
1160                         sfc_err(ctx->sa, "L3 next protocol must be 0x0/0x0 or 0x%02x/0xff; got 0x%02x/0x%02x",
1161                                 pdata->l3_next_proto_restriction_value,
1162                                 pdata->l3_next_proto_value,
1163                                 pdata->l3_next_proto_mask);
1164                         rc = EINVAL;
1165                         goto fail;
1166                 }
1167         }
1168
1169         if (enforce_tag_presence[0] || pdata->has_ovlan_mask) {
1170                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
1171                                                 fremap[EFX_MAE_FIELD_HAS_OVLAN],
1172                                                 enforce_tag_presence[0] ||
1173                                                 pdata->has_ovlan_value);
1174                 if (rc != 0)
1175                         goto fail;
1176         }
1177
1178         if (enforce_tag_presence[1] || pdata->has_ivlan_mask) {
1179                 rc = efx_mae_match_spec_bit_set(ctx->match_spec,
1180                                                 fremap[EFX_MAE_FIELD_HAS_IVLAN],
1181                                                 enforce_tag_presence[1] ||
1182                                                 pdata->has_ivlan_value);
1183                 if (rc != 0)
1184                         goto fail;
1185         }
1186
1187         valuep = (const uint8_t *)&pdata->l3_next_proto_value;
1188         maskp = (const uint8_t *)&pdata->l3_next_proto_mask;
1189         rc = efx_mae_match_spec_field_set(ctx->match_spec,
1190                                           fremap[EFX_MAE_FIELD_IP_PROTO],
1191                                           sizeof(pdata->l3_next_proto_value),
1192                                           valuep,
1193                                           sizeof(pdata->l3_next_proto_mask),
1194                                           maskp);
1195         if (rc != 0)
1196                 goto fail;
1197
1198         return 0;
1199
1200 fail:
1201         return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM, NULL,
1202                                   "Failed to process pattern data");
1203 }
1204
1205 static int
1206 sfc_mae_rule_parse_item_mark(const struct rte_flow_item *item,
1207                              struct sfc_flow_parse_ctx *ctx,
1208                              struct rte_flow_error *error)
1209 {
1210         const struct rte_flow_item_mark *spec = item->spec;
1211         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1212
1213         if (spec == NULL) {
1214                 return rte_flow_error_set(error, EINVAL,
1215                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1216                                 "NULL spec in item MARK");
1217         }
1218
1219         /*
1220          * This item is used in tunnel offload support only.
1221          * It must go before any network header items. This
1222          * way, sfc_mae_rule_preparse_item_mark() must have
1223          * already parsed it. Only one item MARK is allowed.
1224          */
1225         if (ctx_mae->ft_rule_type != SFC_FT_RULE_GROUP ||
1226             spec->id != (uint32_t)SFC_FT_ID_TO_MARK(ctx_mae->ft->id)) {
1227                 return rte_flow_error_set(error, EINVAL,
1228                                           RTE_FLOW_ERROR_TYPE_ITEM,
1229                                           item, "invalid item MARK");
1230         }
1231
1232         return 0;
1233 }
1234
1235 static int
1236 sfc_mae_rule_parse_item_port_id(const struct rte_flow_item *item,
1237                                 struct sfc_flow_parse_ctx *ctx,
1238                                 struct rte_flow_error *error)
1239 {
1240         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1241         const struct rte_flow_item_port_id supp_mask = {
1242                 .id = 0xffffffff,
1243         };
1244         const void *def_mask = &rte_flow_item_port_id_mask;
1245         const struct rte_flow_item_port_id *spec = NULL;
1246         const struct rte_flow_item_port_id *mask = NULL;
1247         efx_mport_sel_t mport_sel;
1248         int rc;
1249
1250         if (ctx_mae->match_mport_set) {
1251                 return rte_flow_error_set(error, ENOTSUP,
1252                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1253                                 "Can't handle multiple traffic source items");
1254         }
1255
1256         rc = sfc_flow_parse_init(item,
1257                                  (const void **)&spec, (const void **)&mask,
1258                                  (const void *)&supp_mask, def_mask,
1259                                  sizeof(struct rte_flow_item_port_id), error);
1260         if (rc != 0)
1261                 return rc;
1262
1263         if (mask->id != supp_mask.id) {
1264                 return rte_flow_error_set(error, EINVAL,
1265                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1266                                 "Bad mask in the PORT_ID pattern item");
1267         }
1268
1269         /* If "spec" is not set, could be any port ID */
1270         if (spec == NULL)
1271                 return 0;
1272
1273         if (spec->id > UINT16_MAX) {
1274                 return rte_flow_error_set(error, EOVERFLOW,
1275                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
1276                                           "The port ID is too large");
1277         }
1278
1279         rc = sfc_mae_switch_port_by_ethdev(ctx_mae->sa->mae.switch_domain_id,
1280                                            spec->id, &mport_sel);
1281         if (rc != 0) {
1282                 return rte_flow_error_set(error, rc,
1283                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1284                                 "Can't find RTE ethdev by the port ID");
1285         }
1286
1287         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec,
1288                                           &mport_sel, NULL);
1289         if (rc != 0) {
1290                 return rte_flow_error_set(error, rc,
1291                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1292                                 "Failed to set MPORT for the port ID");
1293         }
1294
1295         ctx_mae->match_mport_set = B_TRUE;
1296
1297         return 0;
1298 }
1299
1300 static int
1301 sfc_mae_rule_parse_item_port_representor(const struct rte_flow_item *item,
1302                                          struct sfc_flow_parse_ctx *ctx,
1303                                          struct rte_flow_error *error)
1304 {
1305         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1306         const struct rte_flow_item_ethdev supp_mask = {
1307                 .port_id = 0xffff,
1308         };
1309         const void *def_mask = &rte_flow_item_ethdev_mask;
1310         const struct rte_flow_item_ethdev *spec = NULL;
1311         const struct rte_flow_item_ethdev *mask = NULL;
1312         efx_mport_sel_t mport_sel;
1313         int rc;
1314
1315         if (ctx_mae->match_mport_set) {
1316                 return rte_flow_error_set(error, ENOTSUP,
1317                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1318                                 "Can't handle multiple traffic source items");
1319         }
1320
1321         rc = sfc_flow_parse_init(item,
1322                                  (const void **)&spec, (const void **)&mask,
1323                                  (const void *)&supp_mask, def_mask,
1324                                  sizeof(struct rte_flow_item_ethdev), error);
1325         if (rc != 0)
1326                 return rc;
1327
1328         if (mask->port_id != supp_mask.port_id) {
1329                 return rte_flow_error_set(error, EINVAL,
1330                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1331                                 "Bad mask in the PORT_REPRESENTOR pattern item");
1332         }
1333
1334         /* If "spec" is not set, could be any port ID */
1335         if (spec == NULL)
1336                 return 0;
1337
1338         rc = sfc_mae_switch_port_by_ethdev(
1339                         ctx_mae->sa->mae.switch_domain_id,
1340                         spec->port_id, &mport_sel);
1341         if (rc != 0) {
1342                 return rte_flow_error_set(error, rc,
1343                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1344                                 "Can't find RTE ethdev by the port ID");
1345         }
1346
1347         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec,
1348                                           &mport_sel, NULL);
1349         if (rc != 0) {
1350                 return rte_flow_error_set(error, rc,
1351                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1352                                 "Failed to set MPORT for the port ID");
1353         }
1354
1355         ctx_mae->match_mport_set = B_TRUE;
1356
1357         return 0;
1358 }
1359
1360 static int
1361 sfc_mae_rule_parse_item_phy_port(const struct rte_flow_item *item,
1362                                  struct sfc_flow_parse_ctx *ctx,
1363                                  struct rte_flow_error *error)
1364 {
1365         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1366         const struct rte_flow_item_phy_port supp_mask = {
1367                 .index = 0xffffffff,
1368         };
1369         const void *def_mask = &rte_flow_item_phy_port_mask;
1370         const struct rte_flow_item_phy_port *spec = NULL;
1371         const struct rte_flow_item_phy_port *mask = NULL;
1372         efx_mport_sel_t mport_v;
1373         int rc;
1374
1375         if (ctx_mae->match_mport_set) {
1376                 return rte_flow_error_set(error, ENOTSUP,
1377                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1378                                 "Can't handle multiple traffic source items");
1379         }
1380
1381         rc = sfc_flow_parse_init(item,
1382                                  (const void **)&spec, (const void **)&mask,
1383                                  (const void *)&supp_mask, def_mask,
1384                                  sizeof(struct rte_flow_item_phy_port), error);
1385         if (rc != 0)
1386                 return rc;
1387
1388         if (mask->index != supp_mask.index) {
1389                 return rte_flow_error_set(error, EINVAL,
1390                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1391                                 "Bad mask in the PHY_PORT pattern item");
1392         }
1393
1394         /* If "spec" is not set, could be any physical port */
1395         if (spec == NULL)
1396                 return 0;
1397
1398         rc = efx_mae_mport_by_phy_port(spec->index, &mport_v);
1399         if (rc != 0) {
1400                 return rte_flow_error_set(error, rc,
1401                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1402                                 "Failed to convert the PHY_PORT index");
1403         }
1404
1405         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1406         if (rc != 0) {
1407                 return rte_flow_error_set(error, rc,
1408                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1409                                 "Failed to set MPORT for the PHY_PORT");
1410         }
1411
1412         ctx_mae->match_mport_set = B_TRUE;
1413
1414         return 0;
1415 }
1416
1417 static int
1418 sfc_mae_rule_parse_item_pf(const struct rte_flow_item *item,
1419                            struct sfc_flow_parse_ctx *ctx,
1420                            struct rte_flow_error *error)
1421 {
1422         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1423         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
1424         efx_mport_sel_t mport_v;
1425         int rc;
1426
1427         if (ctx_mae->match_mport_set) {
1428                 return rte_flow_error_set(error, ENOTSUP,
1429                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1430                                 "Can't handle multiple traffic source items");
1431         }
1432
1433         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID,
1434                                             &mport_v);
1435         if (rc != 0) {
1436                 return rte_flow_error_set(error, rc,
1437                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1438                                 "Failed to convert the PF ID");
1439         }
1440
1441         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1442         if (rc != 0) {
1443                 return rte_flow_error_set(error, rc,
1444                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1445                                 "Failed to set MPORT for the PF");
1446         }
1447
1448         ctx_mae->match_mport_set = B_TRUE;
1449
1450         return 0;
1451 }
1452
1453 static int
1454 sfc_mae_rule_parse_item_vf(const struct rte_flow_item *item,
1455                            struct sfc_flow_parse_ctx *ctx,
1456                            struct rte_flow_error *error)
1457 {
1458         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1459         const efx_nic_cfg_t *encp = efx_nic_cfg_get(ctx_mae->sa->nic);
1460         const struct rte_flow_item_vf supp_mask = {
1461                 .id = 0xffffffff,
1462         };
1463         const void *def_mask = &rte_flow_item_vf_mask;
1464         const struct rte_flow_item_vf *spec = NULL;
1465         const struct rte_flow_item_vf *mask = NULL;
1466         efx_mport_sel_t mport_v;
1467         int rc;
1468
1469         if (ctx_mae->match_mport_set) {
1470                 return rte_flow_error_set(error, ENOTSUP,
1471                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1472                                 "Can't handle multiple traffic source items");
1473         }
1474
1475         rc = sfc_flow_parse_init(item,
1476                                  (const void **)&spec, (const void **)&mask,
1477                                  (const void *)&supp_mask, def_mask,
1478                                  sizeof(struct rte_flow_item_vf), error);
1479         if (rc != 0)
1480                 return rc;
1481
1482         if (mask->id != supp_mask.id) {
1483                 return rte_flow_error_set(error, EINVAL,
1484                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1485                                 "Bad mask in the VF pattern item");
1486         }
1487
1488         /*
1489          * If "spec" is not set, the item requests any VF related to the
1490          * PF of the current DPDK port (but not the PF itself).
1491          * Reject this match criterion as unsupported.
1492          */
1493         if (spec == NULL) {
1494                 return rte_flow_error_set(error, EINVAL,
1495                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1496                                 "Bad spec in the VF pattern item");
1497         }
1498
1499         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, spec->id, &mport_v);
1500         if (rc != 0) {
1501                 return rte_flow_error_set(error, rc,
1502                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1503                                 "Failed to convert the PF + VF IDs");
1504         }
1505
1506         rc = efx_mae_match_spec_mport_set(ctx_mae->match_spec, &mport_v, NULL);
1507         if (rc != 0) {
1508                 return rte_flow_error_set(error, rc,
1509                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1510                                 "Failed to set MPORT for the PF + VF");
1511         }
1512
1513         ctx_mae->match_mport_set = B_TRUE;
1514
1515         return 0;
1516 }
1517
1518 /*
1519  * Having this field ID in a field locator means that this
1520  * locator cannot be used to actually set the field at the
1521  * time when the corresponding item gets encountered. Such
1522  * fields get stashed in the parsing context instead. This
1523  * is required to resolve dependencies between the stashed
1524  * fields. See sfc_mae_rule_process_pattern_data().
1525  */
1526 #define SFC_MAE_FIELD_HANDLING_DEFERRED EFX_MAE_FIELD_NIDS
1527
1528 struct sfc_mae_field_locator {
1529         efx_mae_field_id_t              field_id;
1530         size_t                          size;
1531         /* Field offset in the corresponding rte_flow_item_ struct */
1532         size_t                          ofst;
1533 };
1534
1535 static void
1536 sfc_mae_item_build_supp_mask(const struct sfc_mae_field_locator *field_locators,
1537                              unsigned int nb_field_locators, void *mask_ptr,
1538                              size_t mask_size)
1539 {
1540         unsigned int i;
1541
1542         memset(mask_ptr, 0, mask_size);
1543
1544         for (i = 0; i < nb_field_locators; ++i) {
1545                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1546
1547                 SFC_ASSERT(fl->ofst + fl->size <= mask_size);
1548                 memset(RTE_PTR_ADD(mask_ptr, fl->ofst), 0xff, fl->size);
1549         }
1550 }
1551
1552 static int
1553 sfc_mae_parse_item(const struct sfc_mae_field_locator *field_locators,
1554                    unsigned int nb_field_locators, const uint8_t *spec,
1555                    const uint8_t *mask, struct sfc_mae_parse_ctx *ctx,
1556                    struct rte_flow_error *error)
1557 {
1558         const efx_mae_field_id_t *fremap = ctx->field_ids_remap;
1559         unsigned int i;
1560         int rc = 0;
1561
1562         for (i = 0; i < nb_field_locators; ++i) {
1563                 const struct sfc_mae_field_locator *fl = &field_locators[i];
1564
1565                 if (fl->field_id == SFC_MAE_FIELD_HANDLING_DEFERRED)
1566                         continue;
1567
1568                 rc = efx_mae_match_spec_field_set(ctx->match_spec,
1569                                                   fremap[fl->field_id],
1570                                                   fl->size, spec + fl->ofst,
1571                                                   fl->size, mask + fl->ofst);
1572                 if (rc != 0)
1573                         break;
1574         }
1575
1576         if (rc != 0) {
1577                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1578                                 NULL, "Failed to process item fields");
1579         }
1580
1581         return rc;
1582 }
1583
1584 static const struct sfc_mae_field_locator flocs_eth[] = {
1585         {
1586                 /*
1587                  * This locator is used only for building supported fields mask.
1588                  * The field is handled by sfc_mae_rule_process_pattern_data().
1589                  */
1590                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1591                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, type),
1592                 offsetof(struct rte_flow_item_eth, type),
1593         },
1594         {
1595                 EFX_MAE_FIELD_ETH_DADDR_BE,
1596                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, dst),
1597                 offsetof(struct rte_flow_item_eth, dst),
1598         },
1599         {
1600                 EFX_MAE_FIELD_ETH_SADDR_BE,
1601                 RTE_SIZEOF_FIELD(struct rte_flow_item_eth, src),
1602                 offsetof(struct rte_flow_item_eth, src),
1603         },
1604 };
1605
1606 static int
1607 sfc_mae_rule_parse_item_eth(const struct rte_flow_item *item,
1608                             struct sfc_flow_parse_ctx *ctx,
1609                             struct rte_flow_error *error)
1610 {
1611         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1612         struct rte_flow_item_eth override_mask;
1613         struct rte_flow_item_eth supp_mask;
1614         const uint8_t *spec = NULL;
1615         const uint8_t *mask = NULL;
1616         int rc;
1617
1618         sfc_mae_item_build_supp_mask(flocs_eth, RTE_DIM(flocs_eth),
1619                                      &supp_mask, sizeof(supp_mask));
1620         supp_mask.has_vlan = 1;
1621
1622         rc = sfc_flow_parse_init(item,
1623                                  (const void **)&spec, (const void **)&mask,
1624                                  (const void *)&supp_mask,
1625                                  &rte_flow_item_eth_mask,
1626                                  sizeof(struct rte_flow_item_eth), error);
1627         if (rc != 0)
1628                 return rc;
1629
1630         if (ctx_mae->ft_rule_type == SFC_FT_RULE_JUMP && mask != NULL) {
1631                 /*
1632                  * The HW/FW hasn't got support for match on MAC addresses in
1633                  * outer rules yet (this will change). Match on VLAN presence
1634                  * isn't supported either. Ignore these match criteria.
1635                  */
1636                 memcpy(&override_mask, mask, sizeof(override_mask));
1637                 memset(&override_mask.hdr.dst_addr, 0,
1638                        sizeof(override_mask.hdr.dst_addr));
1639                 memset(&override_mask.hdr.src_addr, 0,
1640                        sizeof(override_mask.hdr.src_addr));
1641                 override_mask.has_vlan = 0;
1642
1643                 mask = (const uint8_t *)&override_mask;
1644         }
1645
1646         if (spec != NULL) {
1647                 struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1648                 struct sfc_mae_ethertype *ethertypes = pdata->ethertypes;
1649                 const struct rte_flow_item_eth *item_spec;
1650                 const struct rte_flow_item_eth *item_mask;
1651
1652                 item_spec = (const struct rte_flow_item_eth *)spec;
1653                 item_mask = (const struct rte_flow_item_eth *)mask;
1654
1655                 /*
1656                  * Remember various match criteria in the parsing context.
1657                  * sfc_mae_rule_process_pattern_data() will consider them
1658                  * altogether when the rest of the items have been parsed.
1659                  */
1660                 ethertypes[0].value = item_spec->type;
1661                 ethertypes[0].mask = item_mask->type;
1662                 if (item_mask->has_vlan) {
1663                         pdata->has_ovlan_mask = B_TRUE;
1664                         if (item_spec->has_vlan)
1665                                 pdata->has_ovlan_value = B_TRUE;
1666                 }
1667         } else {
1668                 /*
1669                  * The specification is empty. The overall pattern
1670                  * validity will be enforced at the end of parsing.
1671                  * See sfc_mae_rule_process_pattern_data().
1672                  */
1673                 return 0;
1674         }
1675
1676         return sfc_mae_parse_item(flocs_eth, RTE_DIM(flocs_eth), spec, mask,
1677                                   ctx_mae, error);
1678 }
1679
1680 static const struct sfc_mae_field_locator flocs_vlan[] = {
1681         /* Outermost tag */
1682         {
1683                 EFX_MAE_FIELD_VLAN0_TCI_BE,
1684                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1685                 offsetof(struct rte_flow_item_vlan, tci),
1686         },
1687         {
1688                 /*
1689                  * This locator is used only for building supported fields mask.
1690                  * The field is handled by sfc_mae_rule_process_pattern_data().
1691                  */
1692                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1693                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1694                 offsetof(struct rte_flow_item_vlan, inner_type),
1695         },
1696
1697         /* Innermost tag */
1698         {
1699                 EFX_MAE_FIELD_VLAN1_TCI_BE,
1700                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, tci),
1701                 offsetof(struct rte_flow_item_vlan, tci),
1702         },
1703         {
1704                 /*
1705                  * This locator is used only for building supported fields mask.
1706                  * The field is handled by sfc_mae_rule_process_pattern_data().
1707                  */
1708                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1709                 RTE_SIZEOF_FIELD(struct rte_flow_item_vlan, inner_type),
1710                 offsetof(struct rte_flow_item_vlan, inner_type),
1711         },
1712 };
1713
1714 static int
1715 sfc_mae_rule_parse_item_vlan(const struct rte_flow_item *item,
1716                              struct sfc_flow_parse_ctx *ctx,
1717                              struct rte_flow_error *error)
1718 {
1719         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1720         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1721         boolean_t *has_vlan_mp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1722                 &pdata->has_ovlan_mask,
1723                 &pdata->has_ivlan_mask,
1724         };
1725         boolean_t *has_vlan_vp_by_nb_tags[SFC_MAE_MATCH_VLAN_MAX_NTAGS] = {
1726                 &pdata->has_ovlan_value,
1727                 &pdata->has_ivlan_value,
1728         };
1729         boolean_t *cur_tag_presence_bit_mp;
1730         boolean_t *cur_tag_presence_bit_vp;
1731         const struct sfc_mae_field_locator *flocs;
1732         struct rte_flow_item_vlan supp_mask;
1733         const uint8_t *spec = NULL;
1734         const uint8_t *mask = NULL;
1735         unsigned int nb_flocs;
1736         int rc;
1737
1738         RTE_BUILD_BUG_ON(SFC_MAE_MATCH_VLAN_MAX_NTAGS != 2);
1739
1740         if (pdata->nb_vlan_tags == SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1741                 return rte_flow_error_set(error, ENOTSUP,
1742                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1743                                 "Can't match that many VLAN tags");
1744         }
1745
1746         cur_tag_presence_bit_mp = has_vlan_mp_by_nb_tags[pdata->nb_vlan_tags];
1747         cur_tag_presence_bit_vp = has_vlan_vp_by_nb_tags[pdata->nb_vlan_tags];
1748
1749         if (*cur_tag_presence_bit_mp == B_TRUE &&
1750             *cur_tag_presence_bit_vp == B_FALSE) {
1751                 return rte_flow_error_set(error, EINVAL,
1752                                 RTE_FLOW_ERROR_TYPE_ITEM, item,
1753                                 "The previous item enforces no (more) VLAN, "
1754                                 "so the current item (VLAN) must not exist");
1755         }
1756
1757         nb_flocs = RTE_DIM(flocs_vlan) / SFC_MAE_MATCH_VLAN_MAX_NTAGS;
1758         flocs = flocs_vlan + pdata->nb_vlan_tags * nb_flocs;
1759
1760         sfc_mae_item_build_supp_mask(flocs, nb_flocs,
1761                                      &supp_mask, sizeof(supp_mask));
1762         /*
1763          * This only means that the field is supported by the driver and libefx.
1764          * Support on NIC level will be checked when all items have been parsed.
1765          */
1766         supp_mask.has_more_vlan = 1;
1767
1768         rc = sfc_flow_parse_init(item,
1769                                  (const void **)&spec, (const void **)&mask,
1770                                  (const void *)&supp_mask,
1771                                  &rte_flow_item_vlan_mask,
1772                                  sizeof(struct rte_flow_item_vlan), error);
1773         if (rc != 0)
1774                 return rc;
1775
1776         if (spec != NULL) {
1777                 struct sfc_mae_ethertype *et = pdata->ethertypes;
1778                 const struct rte_flow_item_vlan *item_spec;
1779                 const struct rte_flow_item_vlan *item_mask;
1780
1781                 item_spec = (const struct rte_flow_item_vlan *)spec;
1782                 item_mask = (const struct rte_flow_item_vlan *)mask;
1783
1784                 /*
1785                  * Remember various match criteria in the parsing context.
1786                  * sfc_mae_rule_process_pattern_data() will consider them
1787                  * altogether when the rest of the items have been parsed.
1788                  */
1789                 et[pdata->nb_vlan_tags + 1].value = item_spec->inner_type;
1790                 et[pdata->nb_vlan_tags + 1].mask = item_mask->inner_type;
1791                 pdata->tci_masks[pdata->nb_vlan_tags] = item_mask->tci;
1792                 if (item_mask->has_more_vlan) {
1793                         if (pdata->nb_vlan_tags ==
1794                             SFC_MAE_MATCH_VLAN_MAX_NTAGS) {
1795                                 return rte_flow_error_set(error, ENOTSUP,
1796                                         RTE_FLOW_ERROR_TYPE_ITEM, item,
1797                                         "Can't use 'has_more_vlan' in "
1798                                         "the second item VLAN");
1799                         }
1800                         pdata->has_ivlan_mask = B_TRUE;
1801                         if (item_spec->has_more_vlan)
1802                                 pdata->has_ivlan_value = B_TRUE;
1803                 }
1804
1805                 /* Convert TCI to MAE representation right now. */
1806                 rc = sfc_mae_parse_item(flocs, nb_flocs, spec, mask,
1807                                         ctx_mae, error);
1808                 if (rc != 0)
1809                         return rc;
1810         }
1811
1812         ++(pdata->nb_vlan_tags);
1813
1814         return 0;
1815 }
1816
1817 static const struct sfc_mae_field_locator flocs_ipv4[] = {
1818         {
1819                 EFX_MAE_FIELD_SRC_IP4_BE,
1820                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.src_addr),
1821                 offsetof(struct rte_flow_item_ipv4, hdr.src_addr),
1822         },
1823         {
1824                 EFX_MAE_FIELD_DST_IP4_BE,
1825                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.dst_addr),
1826                 offsetof(struct rte_flow_item_ipv4, hdr.dst_addr),
1827         },
1828         {
1829                 /*
1830                  * This locator is used only for building supported fields mask.
1831                  * The field is handled by sfc_mae_rule_process_pattern_data().
1832                  */
1833                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1834                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.next_proto_id),
1835                 offsetof(struct rte_flow_item_ipv4, hdr.next_proto_id),
1836         },
1837         {
1838                 EFX_MAE_FIELD_IP_TOS,
1839                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4,
1840                                  hdr.type_of_service),
1841                 offsetof(struct rte_flow_item_ipv4, hdr.type_of_service),
1842         },
1843         {
1844                 EFX_MAE_FIELD_IP_TTL,
1845                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv4, hdr.time_to_live),
1846                 offsetof(struct rte_flow_item_ipv4, hdr.time_to_live),
1847         },
1848 };
1849
1850 static int
1851 sfc_mae_rule_parse_item_ipv4(const struct rte_flow_item *item,
1852                              struct sfc_flow_parse_ctx *ctx,
1853                              struct rte_flow_error *error)
1854 {
1855         rte_be16_t ethertype_ipv4_be = RTE_BE16(RTE_ETHER_TYPE_IPV4);
1856         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1857         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1858         struct rte_flow_item_ipv4 supp_mask;
1859         const uint8_t *spec = NULL;
1860         const uint8_t *mask = NULL;
1861         int rc;
1862
1863         sfc_mae_item_build_supp_mask(flocs_ipv4, RTE_DIM(flocs_ipv4),
1864                                      &supp_mask, sizeof(supp_mask));
1865
1866         rc = sfc_flow_parse_init(item,
1867                                  (const void **)&spec, (const void **)&mask,
1868                                  (const void *)&supp_mask,
1869                                  &rte_flow_item_ipv4_mask,
1870                                  sizeof(struct rte_flow_item_ipv4), error);
1871         if (rc != 0)
1872                 return rc;
1873
1874         pdata->innermost_ethertype_restriction.value = ethertype_ipv4_be;
1875         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1876
1877         if (spec != NULL) {
1878                 const struct rte_flow_item_ipv4 *item_spec;
1879                 const struct rte_flow_item_ipv4 *item_mask;
1880
1881                 item_spec = (const struct rte_flow_item_ipv4 *)spec;
1882                 item_mask = (const struct rte_flow_item_ipv4 *)mask;
1883
1884                 pdata->l3_next_proto_value = item_spec->hdr.next_proto_id;
1885                 pdata->l3_next_proto_mask = item_mask->hdr.next_proto_id;
1886         } else {
1887                 return 0;
1888         }
1889
1890         return sfc_mae_parse_item(flocs_ipv4, RTE_DIM(flocs_ipv4), spec, mask,
1891                                   ctx_mae, error);
1892 }
1893
1894 static const struct sfc_mae_field_locator flocs_ipv6[] = {
1895         {
1896                 EFX_MAE_FIELD_SRC_IP6_BE,
1897                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.src_addr),
1898                 offsetof(struct rte_flow_item_ipv6, hdr.src_addr),
1899         },
1900         {
1901                 EFX_MAE_FIELD_DST_IP6_BE,
1902                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.dst_addr),
1903                 offsetof(struct rte_flow_item_ipv6, hdr.dst_addr),
1904         },
1905         {
1906                 /*
1907                  * This locator is used only for building supported fields mask.
1908                  * The field is handled by sfc_mae_rule_process_pattern_data().
1909                  */
1910                 SFC_MAE_FIELD_HANDLING_DEFERRED,
1911                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.proto),
1912                 offsetof(struct rte_flow_item_ipv6, hdr.proto),
1913         },
1914         {
1915                 EFX_MAE_FIELD_IP_TTL,
1916                 RTE_SIZEOF_FIELD(struct rte_flow_item_ipv6, hdr.hop_limits),
1917                 offsetof(struct rte_flow_item_ipv6, hdr.hop_limits),
1918         },
1919 };
1920
1921 static int
1922 sfc_mae_rule_parse_item_ipv6(const struct rte_flow_item *item,
1923                              struct sfc_flow_parse_ctx *ctx,
1924                              struct rte_flow_error *error)
1925 {
1926         rte_be16_t ethertype_ipv6_be = RTE_BE16(RTE_ETHER_TYPE_IPV6);
1927         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
1928         const efx_mae_field_id_t *fremap = ctx_mae->field_ids_remap;
1929         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
1930         struct rte_flow_item_ipv6 supp_mask;
1931         const uint8_t *spec = NULL;
1932         const uint8_t *mask = NULL;
1933         rte_be32_t vtc_flow_be;
1934         uint32_t vtc_flow;
1935         uint8_t tc_value;
1936         uint8_t tc_mask;
1937         int rc;
1938
1939         sfc_mae_item_build_supp_mask(flocs_ipv6, RTE_DIM(flocs_ipv6),
1940                                      &supp_mask, sizeof(supp_mask));
1941
1942         vtc_flow_be = RTE_BE32(RTE_IPV6_HDR_TC_MASK);
1943         memcpy(&supp_mask, &vtc_flow_be, sizeof(vtc_flow_be));
1944
1945         rc = sfc_flow_parse_init(item,
1946                                  (const void **)&spec, (const void **)&mask,
1947                                  (const void *)&supp_mask,
1948                                  &rte_flow_item_ipv6_mask,
1949                                  sizeof(struct rte_flow_item_ipv6), error);
1950         if (rc != 0)
1951                 return rc;
1952
1953         pdata->innermost_ethertype_restriction.value = ethertype_ipv6_be;
1954         pdata->innermost_ethertype_restriction.mask = RTE_BE16(0xffff);
1955
1956         if (spec != NULL) {
1957                 const struct rte_flow_item_ipv6 *item_spec;
1958                 const struct rte_flow_item_ipv6 *item_mask;
1959
1960                 item_spec = (const struct rte_flow_item_ipv6 *)spec;
1961                 item_mask = (const struct rte_flow_item_ipv6 *)mask;
1962
1963                 pdata->l3_next_proto_value = item_spec->hdr.proto;
1964                 pdata->l3_next_proto_mask = item_mask->hdr.proto;
1965         } else {
1966                 return 0;
1967         }
1968
1969         rc = sfc_mae_parse_item(flocs_ipv6, RTE_DIM(flocs_ipv6), spec, mask,
1970                                 ctx_mae, error);
1971         if (rc != 0)
1972                 return rc;
1973
1974         memcpy(&vtc_flow_be, spec, sizeof(vtc_flow_be));
1975         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1976         tc_value = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1977
1978         memcpy(&vtc_flow_be, mask, sizeof(vtc_flow_be));
1979         vtc_flow = rte_be_to_cpu_32(vtc_flow_be);
1980         tc_mask = (vtc_flow & RTE_IPV6_HDR_TC_MASK) >> RTE_IPV6_HDR_TC_SHIFT;
1981
1982         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
1983                                           fremap[EFX_MAE_FIELD_IP_TOS],
1984                                           sizeof(tc_value), &tc_value,
1985                                           sizeof(tc_mask), &tc_mask);
1986         if (rc != 0) {
1987                 return rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
1988                                 NULL, "Failed to process item fields");
1989         }
1990
1991         return 0;
1992 }
1993
1994 static const struct sfc_mae_field_locator flocs_tcp[] = {
1995         {
1996                 EFX_MAE_FIELD_L4_SPORT_BE,
1997                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.src_port),
1998                 offsetof(struct rte_flow_item_tcp, hdr.src_port),
1999         },
2000         {
2001                 EFX_MAE_FIELD_L4_DPORT_BE,
2002                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.dst_port),
2003                 offsetof(struct rte_flow_item_tcp, hdr.dst_port),
2004         },
2005         {
2006                 EFX_MAE_FIELD_TCP_FLAGS_BE,
2007                 /*
2008                  * The values have been picked intentionally since the
2009                  * target MAE field is oversize (16 bit). This mapping
2010                  * relies on the fact that the MAE field is big-endian.
2011                  */
2012                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.data_off) +
2013                 RTE_SIZEOF_FIELD(struct rte_flow_item_tcp, hdr.tcp_flags),
2014                 offsetof(struct rte_flow_item_tcp, hdr.data_off),
2015         },
2016 };
2017
2018 static int
2019 sfc_mae_rule_parse_item_tcp(const struct rte_flow_item *item,
2020                             struct sfc_flow_parse_ctx *ctx,
2021                             struct rte_flow_error *error)
2022 {
2023         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
2024         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
2025         struct rte_flow_item_tcp supp_mask;
2026         const uint8_t *spec = NULL;
2027         const uint8_t *mask = NULL;
2028         int rc;
2029
2030         /*
2031          * When encountered among outermost items, item TCP is invalid.
2032          * Check which match specification is being constructed now.
2033          */
2034         if (ctx_mae->match_spec != ctx_mae->match_spec_action) {
2035                 return rte_flow_error_set(error, EINVAL,
2036                                           RTE_FLOW_ERROR_TYPE_ITEM, item,
2037                                           "TCP in outer frame is invalid");
2038         }
2039
2040         sfc_mae_item_build_supp_mask(flocs_tcp, RTE_DIM(flocs_tcp),
2041                                      &supp_mask, sizeof(supp_mask));
2042
2043         rc = sfc_flow_parse_init(item,
2044                                  (const void **)&spec, (const void **)&mask,
2045                                  (const void *)&supp_mask,
2046                                  &rte_flow_item_tcp_mask,
2047                                  sizeof(struct rte_flow_item_tcp), error);
2048         if (rc != 0)
2049                 return rc;
2050
2051         pdata->l3_next_proto_restriction_value = IPPROTO_TCP;
2052         pdata->l3_next_proto_restriction_mask = 0xff;
2053
2054         if (spec == NULL)
2055                 return 0;
2056
2057         return sfc_mae_parse_item(flocs_tcp, RTE_DIM(flocs_tcp), spec, mask,
2058                                   ctx_mae, error);
2059 }
2060
2061 static const struct sfc_mae_field_locator flocs_udp[] = {
2062         {
2063                 EFX_MAE_FIELD_L4_SPORT_BE,
2064                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.src_port),
2065                 offsetof(struct rte_flow_item_udp, hdr.src_port),
2066         },
2067         {
2068                 EFX_MAE_FIELD_L4_DPORT_BE,
2069                 RTE_SIZEOF_FIELD(struct rte_flow_item_udp, hdr.dst_port),
2070                 offsetof(struct rte_flow_item_udp, hdr.dst_port),
2071         },
2072 };
2073
2074 static int
2075 sfc_mae_rule_parse_item_udp(const struct rte_flow_item *item,
2076                             struct sfc_flow_parse_ctx *ctx,
2077                             struct rte_flow_error *error)
2078 {
2079         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
2080         struct sfc_mae_pattern_data *pdata = &ctx_mae->pattern_data;
2081         struct rte_flow_item_udp supp_mask;
2082         const uint8_t *spec = NULL;
2083         const uint8_t *mask = NULL;
2084         int rc;
2085
2086         sfc_mae_item_build_supp_mask(flocs_udp, RTE_DIM(flocs_udp),
2087                                      &supp_mask, sizeof(supp_mask));
2088
2089         rc = sfc_flow_parse_init(item,
2090                                  (const void **)&spec, (const void **)&mask,
2091                                  (const void *)&supp_mask,
2092                                  &rte_flow_item_udp_mask,
2093                                  sizeof(struct rte_flow_item_udp), error);
2094         if (rc != 0)
2095                 return rc;
2096
2097         pdata->l3_next_proto_restriction_value = IPPROTO_UDP;
2098         pdata->l3_next_proto_restriction_mask = 0xff;
2099
2100         if (spec == NULL)
2101                 return 0;
2102
2103         return sfc_mae_parse_item(flocs_udp, RTE_DIM(flocs_udp), spec, mask,
2104                                   ctx_mae, error);
2105 }
2106
2107 static const struct sfc_mae_field_locator flocs_tunnel[] = {
2108         {
2109                 /*
2110                  * The size and offset values are relevant
2111                  * for Geneve and NVGRE, too.
2112                  */
2113                 .size = RTE_SIZEOF_FIELD(struct rte_flow_item_vxlan, vni),
2114                 .ofst = offsetof(struct rte_flow_item_vxlan, vni),
2115         },
2116 };
2117
2118 /*
2119  * An auxiliary registry which allows using non-encap. field IDs
2120  * directly when building a match specification of type ACTION.
2121  *
2122  * See sfc_mae_rule_parse_pattern() and sfc_mae_rule_parse_item_tunnel().
2123  */
2124 static const efx_mae_field_id_t field_ids_no_remap[] = {
2125 #define FIELD_ID_NO_REMAP(_field) \
2126         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_##_field
2127
2128         FIELD_ID_NO_REMAP(ETHER_TYPE_BE),
2129         FIELD_ID_NO_REMAP(ETH_SADDR_BE),
2130         FIELD_ID_NO_REMAP(ETH_DADDR_BE),
2131         FIELD_ID_NO_REMAP(VLAN0_TCI_BE),
2132         FIELD_ID_NO_REMAP(VLAN0_PROTO_BE),
2133         FIELD_ID_NO_REMAP(VLAN1_TCI_BE),
2134         FIELD_ID_NO_REMAP(VLAN1_PROTO_BE),
2135         FIELD_ID_NO_REMAP(SRC_IP4_BE),
2136         FIELD_ID_NO_REMAP(DST_IP4_BE),
2137         FIELD_ID_NO_REMAP(IP_PROTO),
2138         FIELD_ID_NO_REMAP(IP_TOS),
2139         FIELD_ID_NO_REMAP(IP_TTL),
2140         FIELD_ID_NO_REMAP(SRC_IP6_BE),
2141         FIELD_ID_NO_REMAP(DST_IP6_BE),
2142         FIELD_ID_NO_REMAP(L4_SPORT_BE),
2143         FIELD_ID_NO_REMAP(L4_DPORT_BE),
2144         FIELD_ID_NO_REMAP(TCP_FLAGS_BE),
2145         FIELD_ID_NO_REMAP(HAS_OVLAN),
2146         FIELD_ID_NO_REMAP(HAS_IVLAN),
2147
2148 #undef FIELD_ID_NO_REMAP
2149 };
2150
2151 /*
2152  * An auxiliary registry which allows using "ENC" field IDs
2153  * when building a match specification of type OUTER.
2154  *
2155  * See sfc_mae_rule_encap_parse_init().
2156  */
2157 static const efx_mae_field_id_t field_ids_remap_to_encap[] = {
2158 #define FIELD_ID_REMAP_TO_ENCAP(_field) \
2159         [EFX_MAE_FIELD_##_field] = EFX_MAE_FIELD_ENC_##_field
2160
2161         FIELD_ID_REMAP_TO_ENCAP(ETHER_TYPE_BE),
2162         FIELD_ID_REMAP_TO_ENCAP(ETH_SADDR_BE),
2163         FIELD_ID_REMAP_TO_ENCAP(ETH_DADDR_BE),
2164         FIELD_ID_REMAP_TO_ENCAP(VLAN0_TCI_BE),
2165         FIELD_ID_REMAP_TO_ENCAP(VLAN0_PROTO_BE),
2166         FIELD_ID_REMAP_TO_ENCAP(VLAN1_TCI_BE),
2167         FIELD_ID_REMAP_TO_ENCAP(VLAN1_PROTO_BE),
2168         FIELD_ID_REMAP_TO_ENCAP(SRC_IP4_BE),
2169         FIELD_ID_REMAP_TO_ENCAP(DST_IP4_BE),
2170         FIELD_ID_REMAP_TO_ENCAP(IP_PROTO),
2171         FIELD_ID_REMAP_TO_ENCAP(IP_TOS),
2172         FIELD_ID_REMAP_TO_ENCAP(IP_TTL),
2173         FIELD_ID_REMAP_TO_ENCAP(SRC_IP6_BE),
2174         FIELD_ID_REMAP_TO_ENCAP(DST_IP6_BE),
2175         FIELD_ID_REMAP_TO_ENCAP(L4_SPORT_BE),
2176         FIELD_ID_REMAP_TO_ENCAP(L4_DPORT_BE),
2177         FIELD_ID_REMAP_TO_ENCAP(HAS_OVLAN),
2178         FIELD_ID_REMAP_TO_ENCAP(HAS_IVLAN),
2179
2180 #undef FIELD_ID_REMAP_TO_ENCAP
2181 };
2182
2183 static int
2184 sfc_mae_rule_parse_item_tunnel(const struct rte_flow_item *item,
2185                                struct sfc_flow_parse_ctx *ctx,
2186                                struct rte_flow_error *error)
2187 {
2188         struct sfc_mae_parse_ctx *ctx_mae = ctx->mae;
2189         uint8_t vnet_id_v[sizeof(uint32_t)] = {0};
2190         uint8_t vnet_id_m[sizeof(uint32_t)] = {0};
2191         const struct rte_flow_item_vxlan *vxp;
2192         uint8_t supp_mask[sizeof(uint64_t)];
2193         const uint8_t *spec = NULL;
2194         const uint8_t *mask = NULL;
2195         int rc;
2196
2197         if (ctx_mae->ft_rule_type == SFC_FT_RULE_GROUP) {
2198                 /*
2199                  * As a workaround, pattern processing has started from
2200                  * this (tunnel) item. No pattern data to process yet.
2201                  */
2202         } else {
2203                 /*
2204                  * We're about to start processing inner frame items.
2205                  * Process pattern data that has been deferred so far
2206                  * and reset pattern data storage.
2207                  */
2208                 rc = sfc_mae_rule_process_pattern_data(ctx_mae, error);
2209                 if (rc != 0)
2210                         return rc;
2211         }
2212
2213         memset(&ctx_mae->pattern_data, 0, sizeof(ctx_mae->pattern_data));
2214
2215         sfc_mae_item_build_supp_mask(flocs_tunnel, RTE_DIM(flocs_tunnel),
2216                                      &supp_mask, sizeof(supp_mask));
2217
2218         /*
2219          * This tunnel item was preliminarily detected by
2220          * sfc_mae_rule_encap_parse_init(). Default mask
2221          * was also picked by that helper. Use it here.
2222          */
2223         rc = sfc_flow_parse_init(item,
2224                                  (const void **)&spec, (const void **)&mask,
2225                                  (const void *)&supp_mask,
2226                                  ctx_mae->tunnel_def_mask,
2227                                  ctx_mae->tunnel_def_mask_size,  error);
2228         if (rc != 0)
2229                 return rc;
2230
2231         /*
2232          * This item and later ones comprise a
2233          * match specification of type ACTION.
2234          */
2235         ctx_mae->match_spec = ctx_mae->match_spec_action;
2236
2237         /* This item and later ones use non-encap. EFX MAE field IDs. */
2238         ctx_mae->field_ids_remap = field_ids_no_remap;
2239
2240         if (spec == NULL)
2241                 return 0;
2242
2243         /*
2244          * Field EFX_MAE_FIELD_ENC_VNET_ID_BE is a 32-bit one.
2245          * Copy 24-bit VNI, which is BE, at offset 1 in it.
2246          * The extra byte is 0 both in the mask and in the value.
2247          */
2248         vxp = (const struct rte_flow_item_vxlan *)spec;
2249         memcpy(vnet_id_v + 1, &vxp->vni, sizeof(vxp->vni));
2250
2251         vxp = (const struct rte_flow_item_vxlan *)mask;
2252         memcpy(vnet_id_m + 1, &vxp->vni, sizeof(vxp->vni));
2253
2254         rc = efx_mae_match_spec_field_set(ctx_mae->match_spec,
2255                                           EFX_MAE_FIELD_ENC_VNET_ID_BE,
2256                                           sizeof(vnet_id_v), vnet_id_v,
2257                                           sizeof(vnet_id_m), vnet_id_m);
2258         if (rc != 0) {
2259                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ITEM,
2260                                         item, "Failed to set VXLAN VNI");
2261         }
2262
2263         return rc;
2264 }
2265
2266 static const struct sfc_flow_item sfc_flow_items[] = {
2267         {
2268                 .type = RTE_FLOW_ITEM_TYPE_MARK,
2269                 .name = "MARK",
2270                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2271                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2272                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2273                 .parse = sfc_mae_rule_parse_item_mark,
2274         },
2275         {
2276                 .type = RTE_FLOW_ITEM_TYPE_PORT_ID,
2277                 .name = "PORT_ID",
2278                 /*
2279                  * In terms of RTE flow, this item is a META one,
2280                  * and its position in the pattern is don't care.
2281                  */
2282                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2283                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2284                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2285                 .parse = sfc_mae_rule_parse_item_port_id,
2286         },
2287         {
2288                 .type = RTE_FLOW_ITEM_TYPE_PORT_REPRESENTOR,
2289                 .name = "PORT_REPRESENTOR",
2290                 /*
2291                  * In terms of RTE flow, this item is a META one,
2292                  * and its position in the pattern is don't care.
2293                  */
2294                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2295                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2296                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2297                 .parse = sfc_mae_rule_parse_item_port_representor,
2298         },
2299         {
2300                 .type = RTE_FLOW_ITEM_TYPE_PHY_PORT,
2301                 .name = "PHY_PORT",
2302                 /*
2303                  * In terms of RTE flow, this item is a META one,
2304                  * and its position in the pattern is don't care.
2305                  */
2306                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2307                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2308                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2309                 .parse = sfc_mae_rule_parse_item_phy_port,
2310         },
2311         {
2312                 .type = RTE_FLOW_ITEM_TYPE_PF,
2313                 .name = "PF",
2314                 /*
2315                  * In terms of RTE flow, this item is a META one,
2316                  * and its position in the pattern is don't care.
2317                  */
2318                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2319                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2320                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2321                 .parse = sfc_mae_rule_parse_item_pf,
2322         },
2323         {
2324                 .type = RTE_FLOW_ITEM_TYPE_VF,
2325                 .name = "VF",
2326                 /*
2327                  * In terms of RTE flow, this item is a META one,
2328                  * and its position in the pattern is don't care.
2329                  */
2330                 .prev_layer = SFC_FLOW_ITEM_ANY_LAYER,
2331                 .layer = SFC_FLOW_ITEM_ANY_LAYER,
2332                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2333                 .parse = sfc_mae_rule_parse_item_vf,
2334         },
2335         {
2336                 .type = RTE_FLOW_ITEM_TYPE_ETH,
2337                 .name = "ETH",
2338                 .prev_layer = SFC_FLOW_ITEM_START_LAYER,
2339                 .layer = SFC_FLOW_ITEM_L2,
2340                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2341                 .parse = sfc_mae_rule_parse_item_eth,
2342         },
2343         {
2344                 .type = RTE_FLOW_ITEM_TYPE_VLAN,
2345                 .name = "VLAN",
2346                 .prev_layer = SFC_FLOW_ITEM_L2,
2347                 .layer = SFC_FLOW_ITEM_L2,
2348                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2349                 .parse = sfc_mae_rule_parse_item_vlan,
2350         },
2351         {
2352                 .type = RTE_FLOW_ITEM_TYPE_IPV4,
2353                 .name = "IPV4",
2354                 .prev_layer = SFC_FLOW_ITEM_L2,
2355                 .layer = SFC_FLOW_ITEM_L3,
2356                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2357                 .parse = sfc_mae_rule_parse_item_ipv4,
2358         },
2359         {
2360                 .type = RTE_FLOW_ITEM_TYPE_IPV6,
2361                 .name = "IPV6",
2362                 .prev_layer = SFC_FLOW_ITEM_L2,
2363                 .layer = SFC_FLOW_ITEM_L3,
2364                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2365                 .parse = sfc_mae_rule_parse_item_ipv6,
2366         },
2367         {
2368                 .type = RTE_FLOW_ITEM_TYPE_TCP,
2369                 .name = "TCP",
2370                 .prev_layer = SFC_FLOW_ITEM_L3,
2371                 .layer = SFC_FLOW_ITEM_L4,
2372                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2373                 .parse = sfc_mae_rule_parse_item_tcp,
2374         },
2375         {
2376                 .type = RTE_FLOW_ITEM_TYPE_UDP,
2377                 .name = "UDP",
2378                 .prev_layer = SFC_FLOW_ITEM_L3,
2379                 .layer = SFC_FLOW_ITEM_L4,
2380                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2381                 .parse = sfc_mae_rule_parse_item_udp,
2382         },
2383         {
2384                 .type = RTE_FLOW_ITEM_TYPE_VXLAN,
2385                 .name = "VXLAN",
2386                 .prev_layer = SFC_FLOW_ITEM_L4,
2387                 .layer = SFC_FLOW_ITEM_START_LAYER,
2388                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2389                 .parse = sfc_mae_rule_parse_item_tunnel,
2390         },
2391         {
2392                 .type = RTE_FLOW_ITEM_TYPE_GENEVE,
2393                 .name = "GENEVE",
2394                 .prev_layer = SFC_FLOW_ITEM_L4,
2395                 .layer = SFC_FLOW_ITEM_START_LAYER,
2396                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2397                 .parse = sfc_mae_rule_parse_item_tunnel,
2398         },
2399         {
2400                 .type = RTE_FLOW_ITEM_TYPE_NVGRE,
2401                 .name = "NVGRE",
2402                 .prev_layer = SFC_FLOW_ITEM_L3,
2403                 .layer = SFC_FLOW_ITEM_START_LAYER,
2404                 .ctx_type = SFC_FLOW_PARSE_CTX_MAE,
2405                 .parse = sfc_mae_rule_parse_item_tunnel,
2406         },
2407 };
2408
2409 static int
2410 sfc_mae_rule_process_outer(struct sfc_adapter *sa,
2411                            struct sfc_mae_parse_ctx *ctx,
2412                            struct sfc_mae_outer_rule **rulep,
2413                            struct rte_flow_error *error)
2414 {
2415         efx_mae_rule_id_t invalid_rule_id = { .id = EFX_MAE_RSRC_ID_INVALID };
2416         int rc;
2417
2418         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE) {
2419                 *rulep = NULL;
2420                 goto no_or_id;
2421         }
2422
2423         SFC_ASSERT(ctx->match_spec_outer != NULL);
2424
2425         if (!efx_mae_match_spec_is_valid(sa->nic, ctx->match_spec_outer)) {
2426                 return rte_flow_error_set(error, ENOTSUP,
2427                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2428                                           "Inconsistent pattern (outer)");
2429         }
2430
2431         *rulep = sfc_mae_outer_rule_attach(sa, ctx->match_spec_outer,
2432                                            ctx->encap_type);
2433         if (*rulep != NULL) {
2434                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
2435         } else {
2436                 rc = sfc_mae_outer_rule_add(sa, ctx->match_spec_outer,
2437                                             ctx->encap_type, rulep);
2438                 if (rc != 0) {
2439                         return rte_flow_error_set(error, rc,
2440                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2441                                         "Failed to process the pattern");
2442                 }
2443         }
2444
2445         /* The spec has now been tracked by the outer rule entry. */
2446         ctx->match_spec_outer = NULL;
2447
2448 no_or_id:
2449         switch (ctx->ft_rule_type) {
2450         case SFC_FT_RULE_NONE:
2451                 break;
2452         case SFC_FT_RULE_JUMP:
2453                 /* No action rule */
2454                 return 0;
2455         case SFC_FT_RULE_GROUP:
2456                 /*
2457                  * Match on recirculation ID rather than
2458                  * on the outer rule allocation handle.
2459                  */
2460                 rc = efx_mae_match_spec_recirc_id_set(ctx->match_spec_action,
2461                                         SFC_FT_ID_TO_TUNNEL_MARK(ctx->ft->id));
2462                 if (rc != 0) {
2463                         return rte_flow_error_set(error, rc,
2464                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2465                                         "tunnel offload: GROUP: AR: failed to request match on RECIRC_ID");
2466                 }
2467                 return 0;
2468         default:
2469                 SFC_ASSERT(B_FALSE);
2470         }
2471
2472         /*
2473          * In MAE, lookup sequence comprises outer parse, outer rule lookup,
2474          * inner parse (when some outer rule is hit) and action rule lookup.
2475          * If the currently processed flow does not come with an outer rule,
2476          * its action rule must be available only for packets which miss in
2477          * outer rule table. Set OR_ID match field to 0xffffffff/0xffffffff
2478          * in the action rule specification; this ensures correct behaviour.
2479          *
2480          * If, on the other hand, this flow does have an outer rule, its ID
2481          * may be unknown at the moment (not yet allocated), but OR_ID mask
2482          * has to be set to 0xffffffff anyway for correct class comparisons.
2483          * When the outer rule has been allocated, this match field will be
2484          * overridden by sfc_mae_outer_rule_enable() to use the right value.
2485          */
2486         rc = efx_mae_match_spec_outer_rule_id_set(ctx->match_spec_action,
2487                                                   &invalid_rule_id);
2488         if (rc != 0) {
2489                 if (*rulep != NULL)
2490                         sfc_mae_outer_rule_del(sa, *rulep);
2491
2492                 *rulep = NULL;
2493
2494                 return rte_flow_error_set(error, rc,
2495                                           RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2496                                           "Failed to process the pattern");
2497         }
2498
2499         return 0;
2500 }
2501
2502 static int
2503 sfc_mae_rule_preparse_item_mark(const struct rte_flow_item_mark *spec,
2504                                 struct sfc_mae_parse_ctx *ctx)
2505 {
2506         struct sfc_flow_tunnel *ft;
2507         uint32_t user_mark;
2508
2509         if (spec == NULL) {
2510                 sfc_err(ctx->sa, "tunnel offload: GROUP: NULL spec in item MARK");
2511                 return EINVAL;
2512         }
2513
2514         ft = sfc_flow_tunnel_pick(ctx->sa, spec->id);
2515         if (ft == NULL) {
2516                 sfc_err(ctx->sa, "tunnel offload: GROUP: invalid tunnel");
2517                 return EINVAL;
2518         }
2519
2520         if (ft->refcnt == 0) {
2521                 sfc_err(ctx->sa, "tunnel offload: GROUP: tunnel=%u does not exist",
2522                         ft->id);
2523                 return ENOENT;
2524         }
2525
2526         user_mark = SFC_FT_GET_USER_MARK(spec->id);
2527         if (user_mark != 0) {
2528                 sfc_err(ctx->sa, "tunnel offload: GROUP: invalid item MARK");
2529                 return EINVAL;
2530         }
2531
2532         sfc_dbg(ctx->sa, "tunnel offload: GROUP: detected");
2533
2534         ctx->ft_rule_type = SFC_FT_RULE_GROUP;
2535         ctx->ft = ft;
2536
2537         return 0;
2538 }
2539
2540 static int
2541 sfc_mae_rule_encap_parse_init(struct sfc_adapter *sa,
2542                               struct sfc_mae_parse_ctx *ctx,
2543                               struct rte_flow_error *error)
2544 {
2545         const struct rte_flow_item *pattern = ctx->pattern;
2546         struct sfc_mae *mae = &sa->mae;
2547         uint8_t recirc_id = 0;
2548         int rc;
2549
2550         if (pattern == NULL) {
2551                 rte_flow_error_set(error, EINVAL,
2552                                    RTE_FLOW_ERROR_TYPE_ITEM_NUM, NULL,
2553                                    "NULL pattern");
2554                 return -rte_errno;
2555         }
2556
2557         for (;;) {
2558                 switch (pattern->type) {
2559                 case RTE_FLOW_ITEM_TYPE_MARK:
2560                         rc = sfc_mae_rule_preparse_item_mark(pattern->spec,
2561                                                              ctx);
2562                         if (rc != 0) {
2563                                 return rte_flow_error_set(error, rc,
2564                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2565                                                   pattern, "tunnel offload: GROUP: invalid item MARK");
2566                         }
2567                         ++pattern;
2568                         continue;
2569                 case RTE_FLOW_ITEM_TYPE_VXLAN:
2570                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_VXLAN;
2571                         ctx->tunnel_def_mask = &rte_flow_item_vxlan_mask;
2572                         ctx->tunnel_def_mask_size =
2573                                 sizeof(rte_flow_item_vxlan_mask);
2574                         break;
2575                 case RTE_FLOW_ITEM_TYPE_GENEVE:
2576                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_GENEVE;
2577                         ctx->tunnel_def_mask = &rte_flow_item_geneve_mask;
2578                         ctx->tunnel_def_mask_size =
2579                                 sizeof(rte_flow_item_geneve_mask);
2580                         break;
2581                 case RTE_FLOW_ITEM_TYPE_NVGRE:
2582                         ctx->encap_type = EFX_TUNNEL_PROTOCOL_NVGRE;
2583                         ctx->tunnel_def_mask = &rte_flow_item_nvgre_mask;
2584                         ctx->tunnel_def_mask_size =
2585                                 sizeof(rte_flow_item_nvgre_mask);
2586                         break;
2587                 case RTE_FLOW_ITEM_TYPE_END:
2588                         break;
2589                 default:
2590                         ++pattern;
2591                         continue;
2592                 };
2593
2594                 break;
2595         }
2596
2597         switch (ctx->ft_rule_type) {
2598         case SFC_FT_RULE_NONE:
2599                 if (pattern->type == RTE_FLOW_ITEM_TYPE_END)
2600                         return 0;
2601                 break;
2602         case SFC_FT_RULE_JUMP:
2603                 if (pattern->type != RTE_FLOW_ITEM_TYPE_END) {
2604                         return rte_flow_error_set(error, ENOTSUP,
2605                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2606                                                   pattern, "tunnel offload: JUMP: invalid item");
2607                 }
2608                 ctx->encap_type = ctx->ft->encap_type;
2609                 break;
2610         case SFC_FT_RULE_GROUP:
2611                 if (pattern->type == RTE_FLOW_ITEM_TYPE_END) {
2612                         return rte_flow_error_set(error, EINVAL,
2613                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2614                                                   NULL, "tunnel offload: GROUP: missing tunnel item");
2615                 } else if (ctx->encap_type != ctx->ft->encap_type) {
2616                         return rte_flow_error_set(error, EINVAL,
2617                                                   RTE_FLOW_ERROR_TYPE_ITEM,
2618                                                   pattern, "tunnel offload: GROUP: tunnel type mismatch");
2619                 }
2620
2621                 /*
2622                  * The HW/FW hasn't got support for the use of "ENC" fields in
2623                  * action rules (except the VNET_ID one) yet. As a workaround,
2624                  * start parsing the pattern from the tunnel item.
2625                  */
2626                 ctx->pattern = pattern;
2627                 break;
2628         default:
2629                 SFC_ASSERT(B_FALSE);
2630                 break;
2631         }
2632
2633         if ((mae->encap_types_supported & (1U << ctx->encap_type)) == 0) {
2634                 return rte_flow_error_set(error, ENOTSUP,
2635                                           RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2636                                           "OR: unsupported tunnel type");
2637         }
2638
2639         switch (ctx->ft_rule_type) {
2640         case SFC_FT_RULE_JUMP:
2641                 recirc_id = SFC_FT_ID_TO_TUNNEL_MARK(ctx->ft->id);
2642                 /* FALLTHROUGH */
2643         case SFC_FT_RULE_NONE:
2644                 if (ctx->priority >= mae->nb_outer_rule_prios_max) {
2645                         return rte_flow_error_set(error, ENOTSUP,
2646                                         RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY,
2647                                         NULL, "OR: unsupported priority level");
2648                 }
2649
2650                 rc = efx_mae_match_spec_init(sa->nic,
2651                                              EFX_MAE_RULE_OUTER, ctx->priority,
2652                                              &ctx->match_spec_outer);
2653                 if (rc != 0) {
2654                         return rte_flow_error_set(error, rc,
2655                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2656                                 "OR: failed to initialise the match specification");
2657                 }
2658
2659                 /*
2660                  * Outermost items comprise a match
2661                  * specification of type OUTER.
2662                  */
2663                 ctx->match_spec = ctx->match_spec_outer;
2664
2665                 /* Outermost items use "ENC" EFX MAE field IDs. */
2666                 ctx->field_ids_remap = field_ids_remap_to_encap;
2667
2668                 rc = efx_mae_outer_rule_recirc_id_set(ctx->match_spec,
2669                                                       recirc_id);
2670                 if (rc != 0) {
2671                         return rte_flow_error_set(error, rc,
2672                                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2673                                         "OR: failed to initialise RECIRC_ID");
2674                 }
2675                 break;
2676         case SFC_FT_RULE_GROUP:
2677                 /* Outermost items -> "ENC" match fields in the action rule. */
2678                 ctx->field_ids_remap = field_ids_remap_to_encap;
2679                 ctx->match_spec = ctx->match_spec_action;
2680
2681                 /* No own outer rule; match on JUMP OR's RECIRC_ID is used. */
2682                 ctx->encap_type = EFX_TUNNEL_PROTOCOL_NONE;
2683                 break;
2684         default:
2685                 SFC_ASSERT(B_FALSE);
2686                 break;
2687         }
2688
2689         return 0;
2690 }
2691
2692 static void
2693 sfc_mae_rule_encap_parse_fini(struct sfc_adapter *sa,
2694                               struct sfc_mae_parse_ctx *ctx)
2695 {
2696         if (ctx->encap_type == EFX_TUNNEL_PROTOCOL_NONE)
2697                 return;
2698
2699         if (ctx->match_spec_outer != NULL)
2700                 efx_mae_match_spec_fini(sa->nic, ctx->match_spec_outer);
2701 }
2702
2703 int
2704 sfc_mae_rule_parse_pattern(struct sfc_adapter *sa,
2705                            const struct rte_flow_item pattern[],
2706                            struct sfc_flow_spec_mae *spec,
2707                            struct rte_flow_error *error)
2708 {
2709         struct sfc_mae_parse_ctx ctx_mae;
2710         unsigned int priority_shift = 0;
2711         struct sfc_flow_parse_ctx ctx;
2712         int rc;
2713
2714         memset(&ctx_mae, 0, sizeof(ctx_mae));
2715         ctx_mae.ft_rule_type = spec->ft_rule_type;
2716         ctx_mae.priority = spec->priority;
2717         ctx_mae.ft = spec->ft;
2718         ctx_mae.sa = sa;
2719
2720         switch (ctx_mae.ft_rule_type) {
2721         case SFC_FT_RULE_JUMP:
2722                 /*
2723                  * By design, this flow should be represented solely by the
2724                  * outer rule. But the HW/FW hasn't got support for setting
2725                  * Rx mark from RECIRC_ID on outer rule lookup yet. Neither
2726                  * does it support outer rule counters. As a workaround, an
2727                  * action rule of lower priority is used to do the job.
2728                  */
2729                 priority_shift = 1;
2730
2731                 /* FALLTHROUGH */
2732         case SFC_FT_RULE_GROUP:
2733                 if (ctx_mae.priority != 0) {
2734                         /*
2735                          * Because of the above workaround, deny the
2736                          * use of priorities to JUMP and GROUP rules.
2737                          */
2738                         rc = rte_flow_error_set(error, ENOTSUP,
2739                                 RTE_FLOW_ERROR_TYPE_ATTR_PRIORITY, NULL,
2740                                 "tunnel offload: priorities are not supported");
2741                         goto fail_priority_check;
2742                 }
2743
2744                 /* FALLTHROUGH */
2745         case SFC_FT_RULE_NONE:
2746                 rc = efx_mae_match_spec_init(sa->nic, EFX_MAE_RULE_ACTION,
2747                                              spec->priority + priority_shift,
2748                                              &ctx_mae.match_spec_action);
2749                 if (rc != 0) {
2750                         rc = rte_flow_error_set(error, rc,
2751                                 RTE_FLOW_ERROR_TYPE_UNSPECIFIED, NULL,
2752                                 "AR: failed to initialise the match specification");
2753                         goto fail_init_match_spec_action;
2754                 }
2755                 break;
2756         default:
2757                 SFC_ASSERT(B_FALSE);
2758                 break;
2759         }
2760
2761         /*
2762          * As a preliminary setting, assume that there is no encapsulation
2763          * in the pattern. That is, pattern items are about to comprise a
2764          * match specification of type ACTION and use non-encap. field IDs.
2765          *
2766          * sfc_mae_rule_encap_parse_init() below may override this.
2767          */
2768         ctx_mae.encap_type = EFX_TUNNEL_PROTOCOL_NONE;
2769         ctx_mae.match_spec = ctx_mae.match_spec_action;
2770         ctx_mae.field_ids_remap = field_ids_no_remap;
2771         ctx_mae.pattern = pattern;
2772
2773         ctx.type = SFC_FLOW_PARSE_CTX_MAE;
2774         ctx.mae = &ctx_mae;
2775
2776         rc = sfc_mae_rule_encap_parse_init(sa, &ctx_mae, error);
2777         if (rc != 0)
2778                 goto fail_encap_parse_init;
2779
2780         /*
2781          * sfc_mae_rule_encap_parse_init() may have detected tunnel offload
2782          * GROUP rule. Remember its properties for later use.
2783          */
2784         spec->ft_rule_type = ctx_mae.ft_rule_type;
2785         spec->ft = ctx_mae.ft;
2786
2787         rc = sfc_flow_parse_pattern(sa, sfc_flow_items, RTE_DIM(sfc_flow_items),
2788                                     ctx_mae.pattern, &ctx, error);
2789         if (rc != 0)
2790                 goto fail_parse_pattern;
2791
2792         rc = sfc_mae_rule_process_pattern_data(&ctx_mae, error);
2793         if (rc != 0)
2794                 goto fail_process_pattern_data;
2795
2796         rc = sfc_mae_rule_process_outer(sa, &ctx_mae, &spec->outer_rule, error);
2797         if (rc != 0)
2798                 goto fail_process_outer;
2799
2800         if (ctx_mae.match_spec_action != NULL &&
2801             !efx_mae_match_spec_is_valid(sa->nic, ctx_mae.match_spec_action)) {
2802                 rc = rte_flow_error_set(error, ENOTSUP,
2803                                         RTE_FLOW_ERROR_TYPE_ITEM, NULL,
2804                                         "Inconsistent pattern");
2805                 goto fail_validate_match_spec_action;
2806         }
2807
2808         spec->match_spec = ctx_mae.match_spec_action;
2809
2810         return 0;
2811
2812 fail_validate_match_spec_action:
2813 fail_process_outer:
2814 fail_process_pattern_data:
2815 fail_parse_pattern:
2816         sfc_mae_rule_encap_parse_fini(sa, &ctx_mae);
2817
2818 fail_encap_parse_init:
2819         if (ctx_mae.match_spec_action != NULL)
2820                 efx_mae_match_spec_fini(sa->nic, ctx_mae.match_spec_action);
2821
2822 fail_init_match_spec_action:
2823 fail_priority_check:
2824         return rc;
2825 }
2826
2827 /*
2828  * An action supported by MAE may correspond to a bundle of RTE flow actions,
2829  * in example, VLAN_PUSH = OF_PUSH_VLAN + OF_VLAN_SET_VID + OF_VLAN_SET_PCP.
2830  * That is, related RTE flow actions need to be tracked as parts of a whole
2831  * so that they can be combined into a single action and submitted to MAE
2832  * representation of a given rule's action set.
2833  *
2834  * Each RTE flow action provided by an application gets classified as
2835  * one belonging to some bundle type. If an action is not supposed to
2836  * belong to any bundle, or if this action is END, it is described as
2837  * one belonging to a dummy bundle of type EMPTY.
2838  *
2839  * A currently tracked bundle will be submitted if a repeating
2840  * action or an action of different bundle type follows.
2841  */
2842
2843 enum sfc_mae_actions_bundle_type {
2844         SFC_MAE_ACTIONS_BUNDLE_EMPTY = 0,
2845         SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH,
2846 };
2847
2848 struct sfc_mae_actions_bundle {
2849         enum sfc_mae_actions_bundle_type        type;
2850
2851         /* Indicates actions already tracked by the current bundle */
2852         uint64_t                                actions_mask;
2853
2854         /* Parameters used by SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH */
2855         rte_be16_t                              vlan_push_tpid;
2856         rte_be16_t                              vlan_push_tci;
2857 };
2858
2859 /*
2860  * Combine configuration of RTE flow actions tracked by the bundle into a
2861  * single action and submit the result to MAE action set specification.
2862  * Do nothing in the case of dummy action bundle.
2863  */
2864 static int
2865 sfc_mae_actions_bundle_submit(const struct sfc_mae_actions_bundle *bundle,
2866                               efx_mae_actions_t *spec)
2867 {
2868         int rc = 0;
2869
2870         switch (bundle->type) {
2871         case SFC_MAE_ACTIONS_BUNDLE_EMPTY:
2872                 break;
2873         case SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH:
2874                 rc = efx_mae_action_set_populate_vlan_push(
2875                         spec, bundle->vlan_push_tpid, bundle->vlan_push_tci);
2876                 break;
2877         default:
2878                 SFC_ASSERT(B_FALSE);
2879                 break;
2880         }
2881
2882         return rc;
2883 }
2884
2885 /*
2886  * Given the type of the next RTE flow action in the line, decide
2887  * whether a new bundle is about to start, and, if this is the case,
2888  * submit and reset the current bundle.
2889  */
2890 static int
2891 sfc_mae_actions_bundle_sync(const struct rte_flow_action *action,
2892                             struct sfc_mae_actions_bundle *bundle,
2893                             efx_mae_actions_t *spec,
2894                             struct rte_flow_error *error)
2895 {
2896         enum sfc_mae_actions_bundle_type bundle_type_new;
2897         int rc;
2898
2899         switch (action->type) {
2900         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
2901         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
2902         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
2903                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_VLAN_PUSH;
2904                 break;
2905         default:
2906                 /*
2907                  * Self-sufficient actions, including END, are handled in this
2908                  * case. No checks for unsupported actions are needed here
2909                  * because parsing doesn't occur at this point.
2910                  */
2911                 bundle_type_new = SFC_MAE_ACTIONS_BUNDLE_EMPTY;
2912                 break;
2913         }
2914
2915         if (bundle_type_new != bundle->type ||
2916             (bundle->actions_mask & (1ULL << action->type)) != 0) {
2917                 rc = sfc_mae_actions_bundle_submit(bundle, spec);
2918                 if (rc != 0)
2919                         goto fail_submit;
2920
2921                 memset(bundle, 0, sizeof(*bundle));
2922         }
2923
2924         bundle->type = bundle_type_new;
2925
2926         return 0;
2927
2928 fail_submit:
2929         return rte_flow_error_set(error, rc,
2930                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
2931                         "Failed to request the (group of) action(s)");
2932 }
2933
2934 static void
2935 sfc_mae_rule_parse_action_of_push_vlan(
2936                             const struct rte_flow_action_of_push_vlan *conf,
2937                             struct sfc_mae_actions_bundle *bundle)
2938 {
2939         bundle->vlan_push_tpid = conf->ethertype;
2940 }
2941
2942 static void
2943 sfc_mae_rule_parse_action_of_set_vlan_vid(
2944                             const struct rte_flow_action_of_set_vlan_vid *conf,
2945                             struct sfc_mae_actions_bundle *bundle)
2946 {
2947         bundle->vlan_push_tci |= (conf->vlan_vid &
2948                                   rte_cpu_to_be_16(RTE_LEN2MASK(12, uint16_t)));
2949 }
2950
2951 static void
2952 sfc_mae_rule_parse_action_of_set_vlan_pcp(
2953                             const struct rte_flow_action_of_set_vlan_pcp *conf,
2954                             struct sfc_mae_actions_bundle *bundle)
2955 {
2956         uint16_t vlan_tci_pcp = (uint16_t)(conf->vlan_pcp &
2957                                            RTE_LEN2MASK(3, uint8_t)) << 13;
2958
2959         bundle->vlan_push_tci |= rte_cpu_to_be_16(vlan_tci_pcp);
2960 }
2961
2962 struct sfc_mae_parsed_item {
2963         const struct rte_flow_item      *item;
2964         size_t                          proto_header_ofst;
2965         size_t                          proto_header_size;
2966 };
2967
2968 /*
2969  * For each 16-bit word of the given header, override
2970  * bits enforced by the corresponding 16-bit mask.
2971  */
2972 static void
2973 sfc_mae_header_force_item_masks(uint8_t *header_buf,
2974                                 const struct sfc_mae_parsed_item *parsed_items,
2975                                 unsigned int nb_parsed_items)
2976 {
2977         unsigned int item_idx;
2978
2979         for (item_idx = 0; item_idx < nb_parsed_items; ++item_idx) {
2980                 const struct sfc_mae_parsed_item *parsed_item;
2981                 const struct rte_flow_item *item;
2982                 size_t proto_header_size;
2983                 size_t ofst;
2984
2985                 parsed_item = &parsed_items[item_idx];
2986                 proto_header_size = parsed_item->proto_header_size;
2987                 item = parsed_item->item;
2988
2989                 for (ofst = 0; ofst < proto_header_size;
2990                      ofst += sizeof(rte_be16_t)) {
2991                         rte_be16_t *wp = RTE_PTR_ADD(header_buf, ofst);
2992                         const rte_be16_t *w_maskp;
2993                         const rte_be16_t *w_specp;
2994
2995                         w_maskp = RTE_PTR_ADD(item->mask, ofst);
2996                         w_specp = RTE_PTR_ADD(item->spec, ofst);
2997
2998                         *wp &= ~(*w_maskp);
2999                         *wp |= (*w_specp & *w_maskp);
3000                 }
3001
3002                 header_buf += proto_header_size;
3003         }
3004 }
3005
3006 #define SFC_IPV4_TTL_DEF        0x40
3007 #define SFC_IPV6_VTC_FLOW_DEF   0x60000000
3008 #define SFC_IPV6_HOP_LIMITS_DEF 0xff
3009 #define SFC_VXLAN_FLAGS_DEF     0x08000000
3010
3011 static int
3012 sfc_mae_rule_parse_action_vxlan_encap(
3013                             struct sfc_mae *mae,
3014                             const struct rte_flow_action_vxlan_encap *conf,
3015                             efx_mae_actions_t *spec,
3016                             struct rte_flow_error *error)
3017 {
3018         struct sfc_mae_bounce_eh *bounce_eh = &mae->bounce_eh;
3019         struct rte_flow_item *pattern = conf->definition;
3020         uint8_t *buf = bounce_eh->buf;
3021
3022         /* This array will keep track of non-VOID pattern items. */
3023         struct sfc_mae_parsed_item parsed_items[1 /* Ethernet */ +
3024                                                 2 /* VLAN tags */ +
3025                                                 1 /* IPv4 or IPv6 */ +
3026                                                 1 /* UDP */ +
3027                                                 1 /* VXLAN */];
3028         unsigned int nb_parsed_items = 0;
3029
3030         size_t eth_ethertype_ofst = offsetof(struct rte_ether_hdr, ether_type);
3031         uint8_t dummy_buf[RTE_MAX(sizeof(struct rte_ipv4_hdr),
3032                                   sizeof(struct rte_ipv6_hdr))];
3033         struct rte_ipv4_hdr *ipv4 = (void *)dummy_buf;
3034         struct rte_ipv6_hdr *ipv6 = (void *)dummy_buf;
3035         struct rte_vxlan_hdr *vxlan = NULL;
3036         struct rte_udp_hdr *udp = NULL;
3037         unsigned int nb_vlan_tags = 0;
3038         size_t next_proto_ofst = 0;
3039         size_t ethertype_ofst = 0;
3040         uint64_t exp_items;
3041         int rc;
3042
3043         if (pattern == NULL) {
3044                 return rte_flow_error_set(error, EINVAL,
3045                                 RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3046                                 "The encap. header definition is NULL");
3047         }
3048
3049         bounce_eh->type = EFX_TUNNEL_PROTOCOL_VXLAN;
3050         bounce_eh->size = 0;
3051
3052         /*
3053          * Process pattern items and remember non-VOID ones.
3054          * Defer applying masks until after the complete header
3055          * has been built from the pattern items.
3056          */
3057         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_ETH);
3058
3059         for (; pattern->type != RTE_FLOW_ITEM_TYPE_END; ++pattern) {
3060                 struct sfc_mae_parsed_item *parsed_item;
3061                 const uint64_t exp_items_extra_vlan[] = {
3062                         RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN), 0
3063                 };
3064                 size_t proto_header_size;
3065                 rte_be16_t *ethertypep;
3066                 uint8_t *next_protop;
3067                 uint8_t *buf_cur;
3068
3069                 if (pattern->spec == NULL) {
3070                         return rte_flow_error_set(error, EINVAL,
3071                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3072                                         "NULL item spec in the encap. header");
3073                 }
3074
3075                 if (pattern->mask == NULL) {
3076                         return rte_flow_error_set(error, EINVAL,
3077                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3078                                         "NULL item mask in the encap. header");
3079                 }
3080
3081                 if (pattern->last != NULL) {
3082                         /* This is not a match pattern, so disallow range. */
3083                         return rte_flow_error_set(error, EINVAL,
3084                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3085                                         "Range item in the encap. header");
3086                 }
3087
3088                 if (pattern->type == RTE_FLOW_ITEM_TYPE_VOID) {
3089                         /* Handle VOID separately, for clarity. */
3090                         continue;
3091                 }
3092
3093                 if ((exp_items & RTE_BIT64(pattern->type)) == 0) {
3094                         return rte_flow_error_set(error, ENOTSUP,
3095                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3096                                         "Unexpected item in the encap. header");
3097                 }
3098
3099                 parsed_item = &parsed_items[nb_parsed_items];
3100                 buf_cur = buf + bounce_eh->size;
3101
3102                 switch (pattern->type) {
3103                 case RTE_FLOW_ITEM_TYPE_ETH:
3104                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_ETH,
3105                                                exp_items);
3106                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_eth,
3107                                                   hdr) != 0);
3108
3109                         proto_header_size = sizeof(struct rte_ether_hdr);
3110
3111                         ethertype_ofst = eth_ethertype_ofst;
3112
3113                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VLAN) |
3114                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
3115                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
3116                         break;
3117                 case RTE_FLOW_ITEM_TYPE_VLAN:
3118                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VLAN,
3119                                                exp_items);
3120                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vlan,
3121                                                   hdr) != 0);
3122
3123                         proto_header_size = sizeof(struct rte_vlan_hdr);
3124
3125                         ethertypep = RTE_PTR_ADD(buf, eth_ethertype_ofst);
3126                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_QINQ);
3127
3128                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
3129                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_VLAN);
3130
3131                         ethertype_ofst =
3132                             bounce_eh->size +
3133                             offsetof(struct rte_vlan_hdr, eth_proto);
3134
3135                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV4) |
3136                                     RTE_BIT64(RTE_FLOW_ITEM_TYPE_IPV6);
3137                         exp_items |= exp_items_extra_vlan[nb_vlan_tags];
3138
3139                         ++nb_vlan_tags;
3140                         break;
3141                 case RTE_FLOW_ITEM_TYPE_IPV4:
3142                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV4,
3143                                                exp_items);
3144                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv4,
3145                                                   hdr) != 0);
3146
3147                         proto_header_size = sizeof(struct rte_ipv4_hdr);
3148
3149                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
3150                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV4);
3151
3152                         next_proto_ofst =
3153                             bounce_eh->size +
3154                             offsetof(struct rte_ipv4_hdr, next_proto_id);
3155
3156                         ipv4 = (struct rte_ipv4_hdr *)buf_cur;
3157
3158                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
3159                         break;
3160                 case RTE_FLOW_ITEM_TYPE_IPV6:
3161                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_IPV6,
3162                                                exp_items);
3163                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_ipv6,
3164                                                   hdr) != 0);
3165
3166                         proto_header_size = sizeof(struct rte_ipv6_hdr);
3167
3168                         ethertypep = RTE_PTR_ADD(buf, ethertype_ofst);
3169                         *ethertypep = RTE_BE16(RTE_ETHER_TYPE_IPV6);
3170
3171                         next_proto_ofst = bounce_eh->size +
3172                                           offsetof(struct rte_ipv6_hdr, proto);
3173
3174                         ipv6 = (struct rte_ipv6_hdr *)buf_cur;
3175
3176                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_UDP);
3177                         break;
3178                 case RTE_FLOW_ITEM_TYPE_UDP:
3179                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_UDP,
3180                                                exp_items);
3181                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_udp,
3182                                                   hdr) != 0);
3183
3184                         proto_header_size = sizeof(struct rte_udp_hdr);
3185
3186                         next_protop = RTE_PTR_ADD(buf, next_proto_ofst);
3187                         *next_protop = IPPROTO_UDP;
3188
3189                         udp = (struct rte_udp_hdr *)buf_cur;
3190
3191                         exp_items = RTE_BIT64(RTE_FLOW_ITEM_TYPE_VXLAN);
3192                         break;
3193                 case RTE_FLOW_ITEM_TYPE_VXLAN:
3194                         SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ITEM_TYPE_VXLAN,
3195                                                exp_items);
3196                         RTE_BUILD_BUG_ON(offsetof(struct rte_flow_item_vxlan,
3197                                                   hdr) != 0);
3198
3199                         proto_header_size = sizeof(struct rte_vxlan_hdr);
3200
3201                         vxlan = (struct rte_vxlan_hdr *)buf_cur;
3202
3203                         udp->dst_port = RTE_BE16(RTE_VXLAN_DEFAULT_PORT);
3204                         udp->dgram_len = RTE_BE16(sizeof(*udp) +
3205                                                   sizeof(*vxlan));
3206                         udp->dgram_cksum = 0;
3207
3208                         exp_items = 0;
3209                         break;
3210                 default:
3211                         return rte_flow_error_set(error, ENOTSUP,
3212                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3213                                         "Unknown item in the encap. header");
3214                 }
3215
3216                 if (bounce_eh->size + proto_header_size > bounce_eh->buf_size) {
3217                         return rte_flow_error_set(error, E2BIG,
3218                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3219                                         "The encap. header is too big");
3220                 }
3221
3222                 if ((proto_header_size & 1) != 0) {
3223                         return rte_flow_error_set(error, EINVAL,
3224                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3225                                         "Odd layer size in the encap. header");
3226                 }
3227
3228                 rte_memcpy(buf_cur, pattern->spec, proto_header_size);
3229                 bounce_eh->size += proto_header_size;
3230
3231                 parsed_item->item = pattern;
3232                 parsed_item->proto_header_size = proto_header_size;
3233                 ++nb_parsed_items;
3234         }
3235
3236         if (exp_items != 0) {
3237                 /* Parsing item VXLAN would have reset exp_items to 0. */
3238                 return rte_flow_error_set(error, ENOTSUP,
3239                                         RTE_FLOW_ERROR_TYPE_ACTION_CONF, NULL,
3240                                         "No item VXLAN in the encap. header");
3241         }
3242
3243         /* One of the pointers (ipv4, ipv6) refers to a dummy area. */
3244         ipv4->version_ihl = RTE_IPV4_VHL_DEF;
3245         ipv4->time_to_live = SFC_IPV4_TTL_DEF;
3246         ipv4->total_length = RTE_BE16(sizeof(*ipv4) + sizeof(*udp) +
3247                                       sizeof(*vxlan));
3248         /* The HW cannot compute this checksum. */
3249         ipv4->hdr_checksum = 0;
3250         ipv4->hdr_checksum = rte_ipv4_cksum(ipv4);
3251
3252         ipv6->vtc_flow = RTE_BE32(SFC_IPV6_VTC_FLOW_DEF);
3253         ipv6->hop_limits = SFC_IPV6_HOP_LIMITS_DEF;
3254         ipv6->payload_len = udp->dgram_len;
3255
3256         vxlan->vx_flags = RTE_BE32(SFC_VXLAN_FLAGS_DEF);
3257
3258         /* Take care of the masks. */
3259         sfc_mae_header_force_item_masks(buf, parsed_items, nb_parsed_items);
3260
3261         rc = efx_mae_action_set_populate_encap(spec);
3262         if (rc != 0) {
3263                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION,
3264                                 NULL, "failed to request action ENCAP");
3265         }
3266
3267         return rc;
3268 }
3269
3270 static int
3271 sfc_mae_rule_parse_action_mark(struct sfc_adapter *sa,
3272                                const struct rte_flow_action_mark *conf,
3273                                const struct sfc_flow_spec_mae *spec_mae,
3274                                efx_mae_actions_t *spec)
3275 {
3276         int rc;
3277
3278         if (spec_mae->ft_rule_type == SFC_FT_RULE_JUMP) {
3279                 /* Workaround. See sfc_flow_parse_rte_to_mae() */
3280         } else if (conf->id > SFC_FT_USER_MARK_MASK) {
3281                 sfc_err(sa, "the mark value is too large");
3282                 return EINVAL;
3283         }
3284
3285         rc = efx_mae_action_set_populate_mark(spec, conf->id);
3286         if (rc != 0)
3287                 sfc_err(sa, "failed to request action MARK: %s", strerror(rc));
3288
3289         return rc;
3290 }
3291
3292 static int
3293 sfc_mae_rule_parse_action_count(struct sfc_adapter *sa,
3294                                 const struct rte_flow_action_count *conf
3295                                         __rte_unused,
3296                                 efx_mae_actions_t *spec)
3297 {
3298         int rc;
3299
3300         if ((sa->counter_rxq.state & SFC_COUNTER_RXQ_INITIALIZED) == 0) {
3301                 sfc_err(sa,
3302                         "counter queue is not configured for COUNT action");
3303                 rc = EINVAL;
3304                 goto fail_counter_queue_uninit;
3305         }
3306
3307         if (sfc_get_service_lcore(SOCKET_ID_ANY) == RTE_MAX_LCORE) {
3308                 rc = EINVAL;
3309                 goto fail_no_service_core;
3310         }
3311
3312         rc = efx_mae_action_set_populate_count(spec);
3313         if (rc != 0) {
3314                 sfc_err(sa,
3315                         "failed to populate counters in MAE action set: %s",
3316                         rte_strerror(rc));
3317                 goto fail_populate_count;
3318         }
3319
3320         return 0;
3321
3322 fail_populate_count:
3323 fail_no_service_core:
3324 fail_counter_queue_uninit:
3325
3326         return rc;
3327 }
3328
3329 static int
3330 sfc_mae_rule_parse_action_phy_port(struct sfc_adapter *sa,
3331                                    const struct rte_flow_action_phy_port *conf,
3332                                    efx_mae_actions_t *spec)
3333 {
3334         efx_mport_sel_t mport;
3335         uint32_t phy_port;
3336         int rc;
3337
3338         if (conf->original != 0)
3339                 phy_port = efx_nic_cfg_get(sa->nic)->enc_assigned_port;
3340         else
3341                 phy_port = conf->index;
3342
3343         rc = efx_mae_mport_by_phy_port(phy_port, &mport);
3344         if (rc != 0) {
3345                 sfc_err(sa, "failed to convert phys. port ID %u to m-port selector: %s",
3346                         phy_port, strerror(rc));
3347                 return rc;
3348         }
3349
3350         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3351         if (rc != 0) {
3352                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3353                         mport.sel, strerror(rc));
3354         }
3355
3356         return rc;
3357 }
3358
3359 static int
3360 sfc_mae_rule_parse_action_pf_vf(struct sfc_adapter *sa,
3361                                 const struct rte_flow_action_vf *vf_conf,
3362                                 efx_mae_actions_t *spec)
3363 {
3364         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
3365         efx_mport_sel_t mport;
3366         uint32_t vf;
3367         int rc;
3368
3369         if (vf_conf == NULL)
3370                 vf = EFX_PCI_VF_INVALID;
3371         else if (vf_conf->original != 0)
3372                 vf = encp->enc_vf;
3373         else
3374                 vf = vf_conf->id;
3375
3376         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, vf, &mport);
3377         if (rc != 0) {
3378                 sfc_err(sa, "failed to convert PF %u VF %d to m-port: %s",
3379                         encp->enc_pf, (vf != EFX_PCI_VF_INVALID) ? (int)vf : -1,
3380                         strerror(rc));
3381                 return rc;
3382         }
3383
3384         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3385         if (rc != 0) {
3386                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3387                         mport.sel, strerror(rc));
3388         }
3389
3390         return rc;
3391 }
3392
3393 static int
3394 sfc_mae_rule_parse_action_port_id(struct sfc_adapter *sa,
3395                                   const struct rte_flow_action_port_id *conf,
3396                                   efx_mae_actions_t *spec)
3397 {
3398         struct sfc_adapter_shared * const sas = sfc_sa2shared(sa);
3399         struct sfc_mae *mae = &sa->mae;
3400         efx_mport_sel_t mport;
3401         uint16_t port_id;
3402         int rc;
3403
3404         if (conf->id > UINT16_MAX)
3405                 return EOVERFLOW;
3406
3407         port_id = (conf->original != 0) ? sas->port_id : conf->id;
3408
3409         rc = sfc_mae_switch_port_by_ethdev(mae->switch_domain_id,
3410                                            port_id, &mport);
3411         if (rc != 0) {
3412                 sfc_err(sa, "failed to find MAE switch port SW entry for RTE ethdev port %u: %s",
3413                         port_id, strerror(rc));
3414                 return rc;
3415         }
3416
3417         rc = efx_mae_action_set_populate_deliver(spec, &mport);
3418         if (rc != 0) {
3419                 sfc_err(sa, "failed to request action DELIVER with m-port selector 0x%08x: %s",
3420                         mport.sel, strerror(rc));
3421         }
3422
3423         return rc;
3424 }
3425
3426 static const char * const action_names[] = {
3427         [RTE_FLOW_ACTION_TYPE_VXLAN_DECAP] = "VXLAN_DECAP",
3428         [RTE_FLOW_ACTION_TYPE_OF_POP_VLAN] = "OF_POP_VLAN",
3429         [RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN] = "OF_PUSH_VLAN",
3430         [RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID] = "OF_SET_VLAN_VID",
3431         [RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP] = "OF_SET_VLAN_PCP",
3432         [RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP] = "VXLAN_ENCAP",
3433         [RTE_FLOW_ACTION_TYPE_FLAG] = "FLAG",
3434         [RTE_FLOW_ACTION_TYPE_MARK] = "MARK",
3435         [RTE_FLOW_ACTION_TYPE_PHY_PORT] = "PHY_PORT",
3436         [RTE_FLOW_ACTION_TYPE_PF] = "PF",
3437         [RTE_FLOW_ACTION_TYPE_VF] = "VF",
3438         [RTE_FLOW_ACTION_TYPE_PORT_ID] = "PORT_ID",
3439         [RTE_FLOW_ACTION_TYPE_DROP] = "DROP",
3440         [RTE_FLOW_ACTION_TYPE_JUMP] = "JUMP",
3441 };
3442
3443 static int
3444 sfc_mae_rule_parse_action(struct sfc_adapter *sa,
3445                           const struct rte_flow_action *action,
3446                           const struct sfc_flow_spec_mae *spec_mae,
3447                           struct sfc_mae_actions_bundle *bundle,
3448                           efx_mae_actions_t *spec,
3449                           struct rte_flow_error *error)
3450 {
3451         const struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3452         const uint64_t rx_metadata = sa->negotiated_rx_metadata;
3453         bool custom_error = B_FALSE;
3454         int rc = 0;
3455
3456         switch (action->type) {
3457         case RTE_FLOW_ACTION_TYPE_VXLAN_DECAP:
3458                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_DECAP,
3459                                        bundle->actions_mask);
3460                 if (outer_rule == NULL ||
3461                     outer_rule->encap_type != EFX_TUNNEL_PROTOCOL_VXLAN)
3462                         rc = EINVAL;
3463                 else
3464                         rc = efx_mae_action_set_populate_decap(spec);
3465                 break;
3466         case RTE_FLOW_ACTION_TYPE_OF_POP_VLAN:
3467                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_POP_VLAN,
3468                                        bundle->actions_mask);
3469                 rc = efx_mae_action_set_populate_vlan_pop(spec);
3470                 break;
3471         case RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN:
3472                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_PUSH_VLAN,
3473                                        bundle->actions_mask);
3474                 sfc_mae_rule_parse_action_of_push_vlan(action->conf, bundle);
3475                 break;
3476         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID:
3477                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_VID,
3478                                        bundle->actions_mask);
3479                 sfc_mae_rule_parse_action_of_set_vlan_vid(action->conf, bundle);
3480                 break;
3481         case RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP:
3482                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_OF_SET_VLAN_PCP,
3483                                        bundle->actions_mask);
3484                 sfc_mae_rule_parse_action_of_set_vlan_pcp(action->conf, bundle);
3485                 break;
3486         case RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP:
3487                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VXLAN_ENCAP,
3488                                        bundle->actions_mask);
3489                 rc = sfc_mae_rule_parse_action_vxlan_encap(&sa->mae,
3490                                                            action->conf,
3491                                                            spec, error);
3492                 custom_error = B_TRUE;
3493                 break;
3494         case RTE_FLOW_ACTION_TYPE_COUNT:
3495                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_COUNT,
3496                                        bundle->actions_mask);
3497                 rc = sfc_mae_rule_parse_action_count(sa, action->conf, spec);
3498                 break;
3499         case RTE_FLOW_ACTION_TYPE_FLAG:
3500                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_FLAG,
3501                                        bundle->actions_mask);
3502                 if ((rx_metadata & RTE_ETH_RX_METADATA_USER_FLAG) != 0) {
3503                         rc = efx_mae_action_set_populate_flag(spec);
3504                 } else {
3505                         rc = rte_flow_error_set(error, ENOTSUP,
3506                                                 RTE_FLOW_ERROR_TYPE_ACTION,
3507                                                 action,
3508                                                 "flag delivery has not been negotiated");
3509                         custom_error = B_TRUE;
3510                 }
3511                 break;
3512         case RTE_FLOW_ACTION_TYPE_MARK:
3513                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_MARK,
3514                                        bundle->actions_mask);
3515                 if ((rx_metadata & RTE_ETH_RX_METADATA_USER_MARK) != 0 ||
3516                     spec_mae->ft_rule_type == SFC_FT_RULE_JUMP) {
3517                         rc = sfc_mae_rule_parse_action_mark(sa, action->conf,
3518                                                             spec_mae, spec);
3519                 } else {
3520                         rc = rte_flow_error_set(error, ENOTSUP,
3521                                                 RTE_FLOW_ERROR_TYPE_ACTION,
3522                                                 action,
3523                                                 "mark delivery has not been negotiated");
3524                         custom_error = B_TRUE;
3525                 }
3526                 break;
3527         case RTE_FLOW_ACTION_TYPE_PHY_PORT:
3528                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PHY_PORT,
3529                                        bundle->actions_mask);
3530                 rc = sfc_mae_rule_parse_action_phy_port(sa, action->conf, spec);
3531                 break;
3532         case RTE_FLOW_ACTION_TYPE_PF:
3533                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PF,
3534                                        bundle->actions_mask);
3535                 rc = sfc_mae_rule_parse_action_pf_vf(sa, NULL, spec);
3536                 break;
3537         case RTE_FLOW_ACTION_TYPE_VF:
3538                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_VF,
3539                                        bundle->actions_mask);
3540                 rc = sfc_mae_rule_parse_action_pf_vf(sa, action->conf, spec);
3541                 break;
3542         case RTE_FLOW_ACTION_TYPE_PORT_ID:
3543                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_PORT_ID,
3544                                        bundle->actions_mask);
3545                 rc = sfc_mae_rule_parse_action_port_id(sa, action->conf, spec);
3546                 break;
3547         case RTE_FLOW_ACTION_TYPE_DROP:
3548                 SFC_BUILD_SET_OVERFLOW(RTE_FLOW_ACTION_TYPE_DROP,
3549                                        bundle->actions_mask);
3550                 rc = efx_mae_action_set_populate_drop(spec);
3551                 break;
3552         case RTE_FLOW_ACTION_TYPE_JUMP:
3553                 if (spec_mae->ft_rule_type == SFC_FT_RULE_JUMP) {
3554                         /* Workaround. See sfc_flow_parse_rte_to_mae() */
3555                         break;
3556                 }
3557                 /* FALLTHROUGH */
3558         default:
3559                 return rte_flow_error_set(error, ENOTSUP,
3560                                 RTE_FLOW_ERROR_TYPE_ACTION, NULL,
3561                                 "Unsupported action");
3562         }
3563
3564         if (rc == 0) {
3565                 bundle->actions_mask |= (1ULL << action->type);
3566         } else if (!custom_error) {
3567                 if (action->type < RTE_DIM(action_names)) {
3568                         const char *action_name = action_names[action->type];
3569
3570                         if (action_name != NULL) {
3571                                 sfc_err(sa, "action %s was rejected: %s",
3572                                         action_name, strerror(rc));
3573                         }
3574                 }
3575                 rc = rte_flow_error_set(error, rc, RTE_FLOW_ERROR_TYPE_ACTION,
3576                                 NULL, "Failed to request the action");
3577         }
3578
3579         return rc;
3580 }
3581
3582 static void
3583 sfc_mae_bounce_eh_invalidate(struct sfc_mae_bounce_eh *bounce_eh)
3584 {
3585         bounce_eh->type = EFX_TUNNEL_PROTOCOL_NONE;
3586 }
3587
3588 static int
3589 sfc_mae_process_encap_header(struct sfc_adapter *sa,
3590                              const struct sfc_mae_bounce_eh *bounce_eh,
3591                              struct sfc_mae_encap_header **encap_headerp)
3592 {
3593         if (bounce_eh->type == EFX_TUNNEL_PROTOCOL_NONE) {
3594                 encap_headerp = NULL;
3595                 return 0;
3596         }
3597
3598         *encap_headerp = sfc_mae_encap_header_attach(sa, bounce_eh);
3599         if (*encap_headerp != NULL)
3600                 return 0;
3601
3602         return sfc_mae_encap_header_add(sa, bounce_eh, encap_headerp);
3603 }
3604
3605 int
3606 sfc_mae_rule_parse_actions(struct sfc_adapter *sa,
3607                            const struct rte_flow_action actions[],
3608                            struct sfc_flow_spec_mae *spec_mae,
3609                            struct rte_flow_error *error)
3610 {
3611         struct sfc_mae_encap_header *encap_header = NULL;
3612         struct sfc_mae_actions_bundle bundle = {0};
3613         struct sfc_flow_tunnel *counter_ft = NULL;
3614         uint64_t *ft_group_hit_counter = NULL;
3615         const struct rte_flow_action *action;
3616         struct sfc_mae *mae = &sa->mae;
3617         unsigned int n_count = 0;
3618         efx_mae_actions_t *spec;
3619         int rc;
3620
3621         rte_errno = 0;
3622
3623         if (actions == NULL) {
3624                 return rte_flow_error_set(error, EINVAL,
3625                                 RTE_FLOW_ERROR_TYPE_ACTION_NUM, NULL,
3626                                 "NULL actions");
3627         }
3628
3629         rc = efx_mae_action_set_spec_init(sa->nic, &spec);
3630         if (rc != 0)
3631                 goto fail_action_set_spec_init;
3632
3633         for (action = actions;
3634              action->type != RTE_FLOW_ACTION_TYPE_END; ++action) {
3635                 if (action->type == RTE_FLOW_ACTION_TYPE_COUNT)
3636                         ++n_count;
3637         }
3638
3639         if (spec_mae->ft_rule_type == SFC_FT_RULE_GROUP) {
3640                 /* JUMP rules don't decapsulate packets. GROUP rules do. */
3641                 rc = efx_mae_action_set_populate_decap(spec);
3642                 if (rc != 0)
3643                         goto fail_enforce_ft_decap;
3644
3645                 if (n_count == 0 && sfc_mae_counter_stream_enabled(sa)) {
3646                         /*
3647                          * The user opted not to use action COUNT in this rule,
3648                          * but the counter should be enabled implicitly because
3649                          * packets hitting this rule contribute to the tunnel's
3650                          * total number of hits. See sfc_mae_counter_get().
3651                          */
3652                         rc = efx_mae_action_set_populate_count(spec);
3653                         if (rc != 0)
3654                                 goto fail_enforce_ft_count;
3655
3656                         n_count = 1;
3657                 }
3658         }
3659
3660         /* Cleanup after previous encap. header bounce buffer usage. */
3661         sfc_mae_bounce_eh_invalidate(&mae->bounce_eh);
3662
3663         for (action = actions;
3664              action->type != RTE_FLOW_ACTION_TYPE_END; ++action) {
3665                 rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
3666                 if (rc != 0)
3667                         goto fail_rule_parse_action;
3668
3669                 rc = sfc_mae_rule_parse_action(sa, action, spec_mae,
3670                                                &bundle, spec, error);
3671                 if (rc != 0)
3672                         goto fail_rule_parse_action;
3673         }
3674
3675         rc = sfc_mae_actions_bundle_sync(action, &bundle, spec, error);
3676         if (rc != 0)
3677                 goto fail_rule_parse_action;
3678
3679         rc = sfc_mae_process_encap_header(sa, &mae->bounce_eh, &encap_header);
3680         if (rc != 0)
3681                 goto fail_process_encap_header;
3682
3683         if (n_count > 1) {
3684                 rc = ENOTSUP;
3685                 sfc_err(sa, "too many count actions requested: %u", n_count);
3686                 goto fail_nb_count;
3687         }
3688
3689         switch (spec_mae->ft_rule_type) {
3690         case SFC_FT_RULE_NONE:
3691                 break;
3692         case SFC_FT_RULE_JUMP:
3693                 /* Workaround. See sfc_flow_parse_rte_to_mae() */
3694                 rc = sfc_mae_rule_parse_action_pf_vf(sa, NULL, spec);
3695                 if (rc != 0)
3696                         goto fail_workaround_jump_delivery;
3697
3698                 counter_ft = spec_mae->ft;
3699                 break;
3700         case SFC_FT_RULE_GROUP:
3701                 /*
3702                  * Packets that go to the rule's AR have FT mark set (from the
3703                  * JUMP rule OR's RECIRC_ID). Remove this mark in matching
3704                  * packets. The user may have provided their own action
3705                  * MARK above, so don't check the return value here.
3706                  */
3707                 (void)efx_mae_action_set_populate_mark(spec, 0);
3708
3709                 ft_group_hit_counter = &spec_mae->ft->group_hit_counter;
3710                 break;
3711         default:
3712                 SFC_ASSERT(B_FALSE);
3713         }
3714
3715         spec_mae->action_set = sfc_mae_action_set_attach(sa, encap_header,
3716                                                          n_count, spec);
3717         if (spec_mae->action_set != NULL) {
3718                 sfc_mae_encap_header_del(sa, encap_header);
3719                 efx_mae_action_set_spec_fini(sa->nic, spec);
3720                 return 0;
3721         }
3722
3723         rc = sfc_mae_action_set_add(sa, actions, spec, encap_header,
3724                                     ft_group_hit_counter, counter_ft, n_count,
3725                                     &spec_mae->action_set);
3726         if (rc != 0)
3727                 goto fail_action_set_add;
3728
3729         return 0;
3730
3731 fail_action_set_add:
3732 fail_workaround_jump_delivery:
3733 fail_nb_count:
3734         sfc_mae_encap_header_del(sa, encap_header);
3735
3736 fail_process_encap_header:
3737 fail_rule_parse_action:
3738         efx_mae_action_set_spec_fini(sa->nic, spec);
3739
3740 fail_enforce_ft_count:
3741 fail_enforce_ft_decap:
3742 fail_action_set_spec_init:
3743         if (rc > 0 && rte_errno == 0) {
3744                 rc = rte_flow_error_set(error, rc,
3745                         RTE_FLOW_ERROR_TYPE_UNSPECIFIED,
3746                         NULL, "Failed to process the action");
3747         }
3748         return rc;
3749 }
3750
3751 static bool
3752 sfc_mae_rules_class_cmp(struct sfc_adapter *sa,
3753                         const efx_mae_match_spec_t *left,
3754                         const efx_mae_match_spec_t *right)
3755 {
3756         bool have_same_class;
3757         int rc;
3758
3759         rc = efx_mae_match_specs_class_cmp(sa->nic, left, right,
3760                                            &have_same_class);
3761
3762         return (rc == 0) ? have_same_class : false;
3763 }
3764
3765 static int
3766 sfc_mae_outer_rule_class_verify(struct sfc_adapter *sa,
3767                                 struct sfc_mae_outer_rule *rule)
3768 {
3769         struct sfc_mae_fw_rsrc *fw_rsrc = &rule->fw_rsrc;
3770         struct sfc_mae_outer_rule *entry;
3771         struct sfc_mae *mae = &sa->mae;
3772
3773         if (fw_rsrc->rule_id.id != EFX_MAE_RSRC_ID_INVALID) {
3774                 /* An active rule is reused. It's class is wittingly valid. */
3775                 return 0;
3776         }
3777
3778         TAILQ_FOREACH_REVERSE(entry, &mae->outer_rules,
3779                               sfc_mae_outer_rules, entries) {
3780                 const efx_mae_match_spec_t *left = entry->match_spec;
3781                 const efx_mae_match_spec_t *right = rule->match_spec;
3782
3783                 if (entry == rule)
3784                         continue;
3785
3786                 if (sfc_mae_rules_class_cmp(sa, left, right))
3787                         return 0;
3788         }
3789
3790         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
3791                  "support for outer frame pattern items is not guaranteed; "
3792                  "other than that, the items are valid from SW standpoint");
3793         return 0;
3794 }
3795
3796 static int
3797 sfc_mae_action_rule_class_verify(struct sfc_adapter *sa,
3798                                  struct sfc_flow_spec_mae *spec)
3799 {
3800         const struct rte_flow *entry;
3801
3802         if (spec->match_spec == NULL)
3803                 return 0;
3804
3805         TAILQ_FOREACH_REVERSE(entry, &sa->flow_list, sfc_flow_list, entries) {
3806                 const struct sfc_flow_spec *entry_spec = &entry->spec;
3807                 const struct sfc_flow_spec_mae *es_mae = &entry_spec->mae;
3808                 const efx_mae_match_spec_t *left = es_mae->match_spec;
3809                 const efx_mae_match_spec_t *right = spec->match_spec;
3810
3811                 switch (entry_spec->type) {
3812                 case SFC_FLOW_SPEC_FILTER:
3813                         /* Ignore VNIC-level flows */
3814                         break;
3815                 case SFC_FLOW_SPEC_MAE:
3816                         if (sfc_mae_rules_class_cmp(sa, left, right))
3817                                 return 0;
3818                         break;
3819                 default:
3820                         SFC_ASSERT(false);
3821                 }
3822         }
3823
3824         sfc_info(sa, "for now, the HW doesn't support rule validation, and HW "
3825                  "support for inner frame pattern items is not guaranteed; "
3826                  "other than that, the items are valid from SW standpoint");
3827         return 0;
3828 }
3829
3830 /**
3831  * Confirm that a given flow can be accepted by the FW.
3832  *
3833  * @param sa
3834  *   Software adapter context
3835  * @param flow
3836  *   Flow to be verified
3837  * @return
3838  *   Zero on success and non-zero in the case of error.
3839  *   A special value of EAGAIN indicates that the adapter is
3840  *   not in started state. This state is compulsory because
3841  *   it only makes sense to compare the rule class of the flow
3842  *   being validated with classes of the active rules.
3843  *   Such classes are wittingly supported by the FW.
3844  */
3845 int
3846 sfc_mae_flow_verify(struct sfc_adapter *sa,
3847                     struct rte_flow *flow)
3848 {
3849         struct sfc_flow_spec *spec = &flow->spec;
3850         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3851         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3852         int rc;
3853
3854         SFC_ASSERT(sfc_adapter_is_locked(sa));
3855
3856         if (sa->state != SFC_ETHDEV_STARTED)
3857                 return EAGAIN;
3858
3859         if (outer_rule != NULL) {
3860                 rc = sfc_mae_outer_rule_class_verify(sa, outer_rule);
3861                 if (rc != 0)
3862                         return rc;
3863         }
3864
3865         return sfc_mae_action_rule_class_verify(sa, spec_mae);
3866 }
3867
3868 int
3869 sfc_mae_flow_insert(struct sfc_adapter *sa,
3870                     struct rte_flow *flow)
3871 {
3872         struct sfc_flow_spec *spec = &flow->spec;
3873         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3874         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3875         struct sfc_mae_action_set *action_set = spec_mae->action_set;
3876         struct sfc_mae_fw_rsrc *fw_rsrc;
3877         int rc;
3878
3879         SFC_ASSERT(spec_mae->rule_id.id == EFX_MAE_RSRC_ID_INVALID);
3880
3881         if (outer_rule != NULL) {
3882                 rc = sfc_mae_outer_rule_enable(sa, outer_rule,
3883                                                spec_mae->match_spec);
3884                 if (rc != 0)
3885                         goto fail_outer_rule_enable;
3886         }
3887
3888         if (spec_mae->ft_rule_type == SFC_FT_RULE_JUMP) {
3889                 spec_mae->ft->reset_jump_hit_counter =
3890                         spec_mae->ft->group_hit_counter;
3891         }
3892
3893         if (action_set == NULL) {
3894                 sfc_dbg(sa, "enabled flow=%p (no AR)", flow);
3895                 return 0;
3896         }
3897
3898         rc = sfc_mae_action_set_enable(sa, action_set);
3899         if (rc != 0)
3900                 goto fail_action_set_enable;
3901
3902         if (action_set->n_counters > 0) {
3903                 rc = sfc_mae_counter_start(sa);
3904                 if (rc != 0) {
3905                         sfc_err(sa, "failed to start MAE counters support: %s",
3906                                 rte_strerror(rc));
3907                         goto fail_mae_counter_start;
3908                 }
3909         }
3910
3911         fw_rsrc = &action_set->fw_rsrc;
3912
3913         rc = efx_mae_action_rule_insert(sa->nic, spec_mae->match_spec,
3914                                         NULL, &fw_rsrc->aset_id,
3915                                         &spec_mae->rule_id);
3916         if (rc != 0)
3917                 goto fail_action_rule_insert;
3918
3919         sfc_dbg(sa, "enabled flow=%p: AR_ID=0x%08x",
3920                 flow, spec_mae->rule_id.id);
3921
3922         return 0;
3923
3924 fail_action_rule_insert:
3925 fail_mae_counter_start:
3926         sfc_mae_action_set_disable(sa, action_set);
3927
3928 fail_action_set_enable:
3929         if (outer_rule != NULL)
3930                 sfc_mae_outer_rule_disable(sa, outer_rule);
3931
3932 fail_outer_rule_enable:
3933         return rc;
3934 }
3935
3936 int
3937 sfc_mae_flow_remove(struct sfc_adapter *sa,
3938                     struct rte_flow *flow)
3939 {
3940         struct sfc_flow_spec *spec = &flow->spec;
3941         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
3942         struct sfc_mae_action_set *action_set = spec_mae->action_set;
3943         struct sfc_mae_outer_rule *outer_rule = spec_mae->outer_rule;
3944         int rc;
3945
3946         if (action_set == NULL) {
3947                 sfc_dbg(sa, "disabled flow=%p (no AR)", flow);
3948                 goto skip_action_rule;
3949         }
3950
3951         SFC_ASSERT(spec_mae->rule_id.id != EFX_MAE_RSRC_ID_INVALID);
3952
3953         rc = efx_mae_action_rule_remove(sa->nic, &spec_mae->rule_id);
3954         if (rc != 0) {
3955                 sfc_err(sa, "failed to disable flow=%p with AR_ID=0x%08x: %s",
3956                         flow, spec_mae->rule_id.id, strerror(rc));
3957         }
3958         sfc_dbg(sa, "disabled flow=%p with AR_ID=0x%08x",
3959                 flow, spec_mae->rule_id.id);
3960         spec_mae->rule_id.id = EFX_MAE_RSRC_ID_INVALID;
3961
3962         sfc_mae_action_set_disable(sa, action_set);
3963
3964 skip_action_rule:
3965         if (outer_rule != NULL)
3966                 sfc_mae_outer_rule_disable(sa, outer_rule);
3967
3968         return 0;
3969 }
3970
3971 static int
3972 sfc_mae_query_counter(struct sfc_adapter *sa,
3973                       struct sfc_flow_spec_mae *spec,
3974                       const struct rte_flow_action *action,
3975                       struct rte_flow_query_count *data,
3976                       struct rte_flow_error *error)
3977 {
3978         struct sfc_mae_action_set *action_set = spec->action_set;
3979         const struct rte_flow_action_count *conf = action->conf;
3980         unsigned int i;
3981         int rc;
3982
3983         if (action_set == NULL || action_set->n_counters == 0) {
3984                 return rte_flow_error_set(error, EINVAL,
3985                         RTE_FLOW_ERROR_TYPE_ACTION, action,
3986                         "Queried flow rule does not have count actions");
3987         }
3988
3989         for (i = 0; i < action_set->n_counters; i++) {
3990                 /*
3991                  * Get the first available counter of the flow rule if
3992                  * counter ID is not specified, provided that this
3993                  * counter is not an automatic (implicit) one.
3994                  */
3995                 if (conf != NULL && action_set->counters[i].rte_id != conf->id)
3996                         continue;
3997
3998                 rc = sfc_mae_counter_get(&sa->mae.counter_registry.counters,
3999                                          &action_set->counters[i], data);
4000                 if (rc != 0) {
4001                         return rte_flow_error_set(error, EINVAL,
4002                                 RTE_FLOW_ERROR_TYPE_ACTION, action,
4003                                 "Queried flow rule counter action is invalid");
4004                 }
4005
4006                 return 0;
4007         }
4008
4009         return rte_flow_error_set(error, ENOENT,
4010                                   RTE_FLOW_ERROR_TYPE_ACTION, action,
4011                                   "no such flow rule action or such count ID");
4012 }
4013
4014 int
4015 sfc_mae_flow_query(struct rte_eth_dev *dev,
4016                    struct rte_flow *flow,
4017                    const struct rte_flow_action *action,
4018                    void *data,
4019                    struct rte_flow_error *error)
4020 {
4021         struct sfc_adapter *sa = sfc_adapter_by_eth_dev(dev);
4022         struct sfc_flow_spec *spec = &flow->spec;
4023         struct sfc_flow_spec_mae *spec_mae = &spec->mae;
4024
4025         switch (action->type) {
4026         case RTE_FLOW_ACTION_TYPE_COUNT:
4027                 return sfc_mae_query_counter(sa, spec_mae, action,
4028                                              data, error);
4029         default:
4030                 return rte_flow_error_set(error, ENOTSUP,
4031                         RTE_FLOW_ERROR_TYPE_ACTION, NULL,
4032                         "Query for action of this type is not supported");
4033         }
4034 }
4035
4036 int
4037 sfc_mae_switchdev_init(struct sfc_adapter *sa)
4038 {
4039         const efx_nic_cfg_t *encp = efx_nic_cfg_get(sa->nic);
4040         struct sfc_mae *mae = &sa->mae;
4041         efx_mport_sel_t pf;
4042         efx_mport_sel_t phy;
4043         int rc;
4044
4045         sfc_log_init(sa, "entry");
4046
4047         if (!sa->switchdev) {
4048                 sfc_log_init(sa, "switchdev is not enabled - skip");
4049                 return 0;
4050         }
4051
4052         if (mae->status != SFC_MAE_STATUS_ADMIN) {
4053                 rc = ENOTSUP;
4054                 sfc_err(sa, "failed to init switchdev - no admin MAE privilege");
4055                 goto fail_no_mae;
4056         }
4057
4058         rc = efx_mae_mport_by_pcie_function(encp->enc_pf, EFX_PCI_VF_INVALID,
4059                                             &pf);
4060         if (rc != 0) {
4061                 sfc_err(sa, "failed get PF mport");
4062                 goto fail_pf_get;
4063         }
4064
4065         rc = efx_mae_mport_by_phy_port(encp->enc_assigned_port, &phy);
4066         if (rc != 0) {
4067                 sfc_err(sa, "failed get PHY mport");
4068                 goto fail_phy_get;
4069         }
4070
4071         rc = sfc_mae_rule_add_mport_match_deliver(sa, &pf, &phy,
4072                         SFC_MAE_RULE_PRIO_LOWEST,
4073                         &mae->switchdev_rule_pf_to_ext);
4074         if (rc != 0) {
4075                 sfc_err(sa, "failed add MAE rule to forward from PF to PHY");
4076                 goto fail_pf_add;
4077         }
4078
4079         rc = sfc_mae_rule_add_mport_match_deliver(sa, &phy, &pf,
4080                         SFC_MAE_RULE_PRIO_LOWEST,
4081                         &mae->switchdev_rule_ext_to_pf);
4082         if (rc != 0) {
4083                 sfc_err(sa, "failed add MAE rule to forward from PHY to PF");
4084                 goto fail_phy_add;
4085         }
4086
4087         sfc_log_init(sa, "done");
4088
4089         return 0;
4090
4091 fail_phy_add:
4092         sfc_mae_rule_del(sa, mae->switchdev_rule_pf_to_ext);
4093
4094 fail_pf_add:
4095 fail_phy_get:
4096 fail_pf_get:
4097 fail_no_mae:
4098         sfc_log_init(sa, "failed: %s", rte_strerror(rc));
4099         return rc;
4100 }
4101
4102 void
4103 sfc_mae_switchdev_fini(struct sfc_adapter *sa)
4104 {
4105         struct sfc_mae *mae = &sa->mae;
4106
4107         if (!sa->switchdev)
4108                 return;
4109
4110         sfc_mae_rule_del(sa, mae->switchdev_rule_pf_to_ext);
4111         sfc_mae_rule_del(sa, mae->switchdev_rule_ext_to_pf);
4112 }